diff --git a/Documentation/edac.txt b/Documentation/edac.txt
index 0b875e8da969..9ee774de57cd 100644
--- a/Documentation/edac.txt
+++ b/Documentation/edac.txt
@@ -196,7 +196,7 @@ csrow3.
 The representation of the above is reflected in the directory tree
 in EDAC's sysfs interface. Starting in directory
 /sys/devices/system/edac/mc each memory controller will be represented
-by its own 'mcX' directory, where 'X" is the index of the MC.
+by its own 'mcX' directory, where 'X' is the index of the MC.
 
 
 	..../edac/mc/
@@ -207,7 +207,7 @@ by its own 'mcX' directory, where 'X" is the index of the MC.
 		   ....
 
 Under each 'mcX' directory each 'csrowX' is again represented by a
-'csrowX', where 'X" is the csrow index:
+'csrowX', where 'X' is the csrow index:
 
 
 	.../mc/mc0/
@@ -232,7 +232,7 @@ EDAC control and attribute files.
 
 
 In 'mcX' directories are EDAC control and attribute files for
-this 'X" instance of the memory controllers:
+this 'X' instance of the memory controllers:
 
 
 Counter reset control file:
@@ -343,7 +343,7 @@ Sdram memory scrubbing rate:
 'csrowX' DIRECTORIES
 
 In the 'csrowX' directories are EDAC control and attribute files for
-this 'X" instance of csrow:
+this 'X' instance of csrow:
 
 
 Total Uncorrectable Errors count attribute file:
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index fe95105992c5..3c5e465296e1 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -144,6 +144,7 @@ tcp_adv_win_scale - INTEGER
 	Count buffering overhead as bytes/2^tcp_adv_win_scale
 	(if tcp_adv_win_scale > 0) or bytes-bytes/2^(-tcp_adv_win_scale),
 	if it is <= 0.
+	Possible values are [-31, 31], inclusive.
 	Default: 2
 
 tcp_allowed_congestion_control - STRING
diff --git a/MAINTAINERS b/MAINTAINERS
index 98fc0450d7e1..b3be8b3d0437 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5839,6 +5839,8 @@ M:	Chris Metcalf <cmetcalf@tilera.com>
 W:	http://www.tilera.com/scm/
 S:	Supported
 F:	arch/tile/
+F:	drivers/char/hvc_tile.c
+F:	drivers/net/tile/
 
 TLAN NETWORK DRIVER
 M:	Samuel Chessman <chessman@tux.org>
diff --git a/Makefile b/Makefile
index b31d21377e4c..9e3c89030f5c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 37
-EXTRAVERSION = -rc3
+EXTRAVERSION = -rc4
 NAME = Flesh-Eating Bats with Fangs
 
 # *DOCUMENTATION*
diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig
index 5f6496375404..8d2f2daba0c0 100644
--- a/arch/arm/mach-omap1/Kconfig
+++ b/arch/arm/mach-omap1/Kconfig
@@ -152,20 +152,11 @@ config MACH_NOKIA770
 config MACH_AMS_DELTA
 	bool "Amstrad E3 (Delta)"
 	depends on ARCH_OMAP1 && ARCH_OMAP15XX
+	select FIQ
 	help
 	  Support for the Amstrad E3 (codename Delta) videophone. Say Y here
 	  if you have such a device.
 
-config AMS_DELTA_FIQ
-	bool "Fast Interrupt Request (FIQ) support for the E3"
-	depends on MACH_AMS_DELTA
-	select FIQ
-	help
-	  Provide a FIQ handler for the E3.
-	  This allows for fast handling of interrupts generated
-	  by the clock line of the E3 mailboard (or a PS/2 keyboard)
-	  connected to the GPIO based external keyboard port.
-
 config MACH_OMAP_GENERIC
 	bool "Generic OMAP board"
 	depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX)
diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile
index 9a304d854e33..de3cc130ab8e 100644
--- a/arch/arm/mach-omap1/Makefile
+++ b/arch/arm/mach-omap1/Makefile
@@ -39,8 +39,8 @@ obj-$(CONFIG_MACH_OMAP_PALMTE)		+= board-palmte.o
 obj-$(CONFIG_MACH_OMAP_PALMZ71)		+= board-palmz71.o
 obj-$(CONFIG_MACH_OMAP_PALMTT)		+= board-palmtt.o
 obj-$(CONFIG_MACH_NOKIA770)		+= board-nokia770.o
-obj-$(CONFIG_MACH_AMS_DELTA)		+= board-ams-delta.o
-obj-$(CONFIG_AMS_DELTA_FIQ)		+= ams-delta-fiq.o ams-delta-fiq-handler.o
+obj-$(CONFIG_MACH_AMS_DELTA)		+= board-ams-delta.o ams-delta-fiq.o \
+					   ams-delta-fiq-handler.o
 obj-$(CONFIG_MACH_SX1)			+= board-sx1.o board-sx1-mmc.o
 obj-$(CONFIG_MACH_HERALD)		+= board-htcherald.o
 
diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
index 1948cd3ee500..9d97a72c5393 100644
--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -308,9 +308,7 @@ static void __init ams_delta_init(void)
 #endif
 	platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
 
-#ifdef CONFIG_AMS_DELTA_FIQ
 	ams_delta_init_fiq();
-#endif
 
 	omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
 }
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index 0845fbbf155e..9e1c4d442d3e 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -54,9 +54,11 @@ static inline void omap_serial_outp(struct plat_serial8250_port *p, int offset,
  */
 static void __init omap_serial_reset(struct plat_serial8250_port *p)
 {
-	omap_serial_outp(p, UART_OMAP_MDR1, 0x07);	/* disable UART */
+	omap_serial_outp(p, UART_OMAP_MDR1,
+			UART_OMAP_MDR1_DISABLE);	/* disable UART */
 	omap_serial_outp(p, UART_OMAP_SCR, 0x08);	/* TX watermark */
-	omap_serial_outp(p, UART_OMAP_MDR1, 0x00);	/* enable UART */
+	omap_serial_outp(p, UART_OMAP_MDR1,
+			UART_OMAP_MDR1_16X_MODE);	/* enable UART */
 
 	if (!cpu_is_omap15xx()) {
 		omap_serial_outp(p, UART_OMAP_SYSC, 0x01);
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index ab784bfde908..368851522629 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -174,6 +174,11 @@ config MACH_OMAP3517EVM
 	default y
 	select OMAP_PACKAGE_CBB
 
+config MACH_CRANEBOARD
+	bool "AM3517/05 CRANE board"
+	depends on ARCH_OMAP3
+	select OMAP_PACKAGE_CBB
+
 config MACH_OMAP3_PANDORA
 	bool "OMAP3 Pandora"
 	depends on ARCH_OMAP3
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 60e51bcf53bd..d43bd33a19be 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -144,12 +144,12 @@ obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51.o \
 					   board-rx51-peripherals.o \
 					   board-rx51-video.o \
 					   hsmmc.o
-obj-$(CONFIG_MACH_OMAP_ZOOM2)		+= board-zoom2.o \
+obj-$(CONFIG_MACH_OMAP_ZOOM2)		+= board-zoom.o \
 					   board-zoom-peripherals.o \
 					   board-flash.o \
 					   hsmmc.o \
 					   board-zoom-debugboard.o
-obj-$(CONFIG_MACH_OMAP_ZOOM3)		+= board-zoom3.o \
+obj-$(CONFIG_MACH_OMAP_ZOOM3)		+= board-zoom.o \
 					   board-zoom-peripherals.o \
 					   board-flash.o \
 					   hsmmc.o \
@@ -174,6 +174,8 @@ obj-$(CONFIG_MACH_OMAP4_PANDA)		+= board-omap4panda.o \
 
 obj-$(CONFIG_MACH_OMAP3517EVM)		+= board-am3517evm.o
 
+obj-$(CONFIG_MACH_CRANEBOARD)		+= board-am3517crane.o
+
 obj-$(CONFIG_MACH_SBC3530)		+= board-omap3stalker.o \
 					   hsmmc.o
 # Platform specific device init code
diff --git a/arch/arm/mach-omap2/board-am3517crane.c b/arch/arm/mach-omap2/board-am3517crane.c
new file mode 100644
index 000000000000..13ead330e389
--- /dev/null
+++ b/arch/arm/mach-omap2/board-am3517crane.c
@@ -0,0 +1,69 @@
+/*
+ * Support for AM3517/05 Craneboard
+ * http://www.mistralsolutions.com/products/craneboard.php
+ *
+ * Copyright (C) 2010 Mistral Solutions Pvt Ltd. <www.mistralsolutions.com>
+ * Author: R.Srinath <srinath@mistralsolutions.com>
+ *
+ * Based on mach-omap2/board-am3517evm.c
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as  published by the
+ * Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <plat/board.h>
+#include <plat/common.h>
+
+#include "mux.h"
+
+/* Board initialization */
+static struct omap_board_config_kernel am3517_crane_config[] __initdata = {
+};
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#else
+#define board_mux	NULL
+#endif
+
+static void __init am3517_crane_init_irq(void)
+{
+	omap_board_config = am3517_crane_config;
+	omap_board_config_size = ARRAY_SIZE(am3517_crane_config);
+
+	omap2_init_common_hw(NULL, NULL);
+	omap_init_irq();
+	omap_gpio_init();
+}
+
+static void __init am3517_crane_init(void)
+{
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+	omap_serial_init();
+}
+
+MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")
+	.boot_params	= 0x80000100,
+	.map_io		= omap3_map_io,
+	.reserve	= omap_reserve,
+	.init_irq	= am3517_crane_init_irq,
+	.init_machine	= am3517_crane_init,
+	.timer		= &omap_timer,
+MACHINE_END
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 5e035a58b809..fe76b59b13ed 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -136,16 +136,9 @@ static struct mtd_partition igep2_onenand_partitions[] = {
 	},
 };
 
-static int igep2_onenand_setup(void __iomem *onenand_base, int freq)
-{
-       /* nothing is required to be setup for onenand as of now */
-       return 0;
-}
-
 static struct omap_onenand_platform_data igep2_onenand_data = {
 	.parts = igep2_onenand_partitions,
 	.nr_parts = ARRAY_SIZE(igep2_onenand_partitions),
-	.onenand_setup = igep2_onenand_setup,
 	.dma_channel	= -1,	/* disable DMA in OMAP OneNAND driver */
 };
 
@@ -159,35 +152,34 @@ static struct platform_device igep2_onenand_device = {
 
 static void __init igep2_flash_init(void)
 {
-	u8		cs = 0;
-	u8		onenandcs = GPMC_CS_NUM + 1;
+	u8 cs = 0;
+	u8 onenandcs = GPMC_CS_NUM + 1;
 
-	while (cs < GPMC_CS_NUM) {
-		u32 ret = 0;
+	for (cs = 0; cs < GPMC_CS_NUM; cs++) {
+		u32 ret;
 		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 
 		/* Check if NAND/oneNAND is configured */
 		if ((ret & 0xC00) == 0x800)
 			/* NAND found */
-			pr_err("IGEP v2: Unsupported NAND found\n");
+			pr_err("IGEP2: Unsupported NAND found\n");
 		else {
 			ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
 			if ((ret & 0x3F) == (ONENAND_MAP >> 24))
 				/* ONENAND found */
 				onenandcs = cs;
 		}
-		cs++;
 	}
+
 	if (onenandcs > GPMC_CS_NUM) {
-		pr_err("IGEP v2: Unable to find configuration in GPMC\n");
+		pr_err("IGEP2: Unable to find configuration in GPMC\n");
 		return;
 	}
 
-	if (onenandcs < GPMC_CS_NUM) {
-		igep2_onenand_data.cs = onenandcs;
-		if (platform_device_register(&igep2_onenand_device) < 0)
-			pr_err("IGEP v2: Unable to register OneNAND device\n");
-	}
+	igep2_onenand_data.cs = onenandcs;
+
+	if (platform_device_register(&igep2_onenand_device) < 0)
+		pr_err("IGEP2: Unable to register OneNAND device\n");
 }
 
 #else
@@ -254,9 +246,6 @@ static inline void __init igep2_init_smsc911x(void)
 static inline void __init igep2_init_smsc911x(void) { }
 #endif
 
-static struct omap_board_config_kernel igep2_config[] __initdata = {
-};
-
 static struct regulator_consumer_supply igep2_vmmc1_supply = {
 	.supply		= "vmmc",
 };
@@ -493,8 +482,6 @@ static struct platform_device *igep2_devices[] __initdata = {
 
 static void __init igep2_init_irq(void)
 {
-	omap_board_config = igep2_config;
-	omap_board_config_size = ARRAY_SIZE(igep2_config);
 	omap2_init_common_hw(m65kxxxxam_sdrc_params, m65kxxxxam_sdrc_params);
 	omap_init_irq();
 	omap_gpio_init();
diff --git a/arch/arm/mach-omap2/board-zoom3.c b/arch/arm/mach-omap2/board-zoom.c
similarity index 75%
rename from arch/arm/mach-omap2/board-zoom3.c
rename to arch/arm/mach-omap2/board-zoom.c
index 5adde12c0395..3da69e4102a4 100644
--- a/arch/arm/mach-omap2/board-zoom3.c
+++ b/arch/arm/mach-omap2/board-zoom.c
@@ -1,6 +1,9 @@
 /*
- * Copyright (C) 2009 Texas Instruments Inc.
+ * Copyright (C) 2009-2010 Texas Instruments Inc.
+ * Mikkel Christensen <mlc@ti.com>
+ * Felipe Balbi <balbi@ti.com>
  *
+ * Modified from mach-omap2/board-ldp.c
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -12,22 +15,57 @@
 #include <linux/platform_device.h>
 #include <linux/input.h>
 #include <linux/gpio.h>
+#include <linux/i2c/twl.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 
-#include <mach/board-zoom.h>
-
 #include <plat/common.h>
 #include <plat/board.h>
 #include <plat/usb.h>
 
+#include <mach/board-zoom.h>
+
 #include "board-flash.h"
 #include "mux.h"
+#include "sdram-micron-mt46h32m32lf-6.h"
 #include "sdram-hynix-h8mbx00u0mer-0em.h"
 
-static struct omap_board_config_kernel zoom_config[] __initdata = {
+#define ZOOM3_EHCI_RESET_GPIO		64
+
+static void __init omap_zoom_init_irq(void)
+{
+	if (machine_is_omap_zoom2())
+		omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
+				mt46h32m32lf6_sdrc_params);
+	else if (machine_is_omap_zoom3())
+		omap2_init_common_hw(h8mbx00u0mer0em_sdrc_params,
+				h8mbx00u0mer0em_sdrc_params);
+
+	omap_init_irq();
+	omap_gpio_init();
+}
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	/* WLAN IRQ - GPIO 162 */
+	OMAP3_MUX(MCBSP1_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP),
+	/* WLAN POWER ENABLE - GPIO 101 */
+	OMAP3_MUX(CAM_D2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+	/* WLAN SDIO: MMC3 CMD */
+	OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE3 | OMAP_PIN_INPUT_PULLUP),
+	/* WLAN SDIO: MMC3 CLK */
+	OMAP3_MUX(ETK_CLK, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
+	/* WLAN SDIO: MMC3 DAT[0-3] */
+	OMAP3_MUX(ETK_D3, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
+	OMAP3_MUX(ETK_D4, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
+	OMAP3_MUX(ETK_D5, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
+	OMAP3_MUX(ETK_D6, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
 };
+#else
+#define board_mux	NULL
+#endif
 
 static struct mtd_partition zoom_nand_partitions[] = {
 	/* All the partition sizes are listed in terms of NAND block size */
@@ -70,59 +108,41 @@ static struct mtd_partition zoom_nand_partitions[] = {
 	},
 };
 
-static void __init omap_zoom_init_irq(void)
-{
-	omap_board_config = zoom_config;
-	omap_board_config_size = ARRAY_SIZE(zoom_config);
-	omap2_init_common_hw(h8mbx00u0mer0em_sdrc_params,
-			h8mbx00u0mer0em_sdrc_params);
-	omap_init_irq();
-	omap_gpio_init();
-}
-
-#ifdef CONFIG_OMAP_MUX
-static struct omap_board_mux board_mux[] __initdata = {
-	/* WLAN IRQ - GPIO 162 */
-	OMAP3_MUX(MCBSP1_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP),
-	/* WLAN POWER ENABLE - GPIO 101 */
-	OMAP3_MUX(CAM_D2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
-	/* WLAN SDIO: MMC3 CMD */
-	OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE3 | OMAP_PIN_INPUT_PULLUP),
-	/* WLAN SDIO: MMC3 CLK */
-	OMAP3_MUX(ETK_CLK, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	/* WLAN SDIO: MMC3 DAT[0-3] */
-	OMAP3_MUX(ETK_D3, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	OMAP3_MUX(ETK_D4, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	OMAP3_MUX(ETK_D5, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	OMAP3_MUX(ETK_D6, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	{ .reg_offset = OMAP_MUX_TERMINATOR },
-};
-#else
-#define board_mux	NULL
-#endif
-
 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 	.port_mode[0]		= EHCI_HCD_OMAP_MODE_UNKNOWN,
 	.port_mode[1]		= EHCI_HCD_OMAP_MODE_PHY,
 	.port_mode[2]		= EHCI_HCD_OMAP_MODE_UNKNOWN,
 	.phy_reset		= true,
 	.reset_gpio_port[0]	= -EINVAL,
-	.reset_gpio_port[1]	= 64,
+	.reset_gpio_port[1]	= ZOOM3_EHCI_RESET_GPIO,
 	.reset_gpio_port[2]	= -EINVAL,
 };
 
 static void __init omap_zoom_init(void)
 {
-	omap3_mux_init(board_mux, OMAP_PACKAGE_CBP);
-	zoom_peripherals_init();
-	board_nand_init(zoom_nand_partitions,
-			 ARRAY_SIZE(zoom_nand_partitions), ZOOM_NAND_CS);
-	zoom_debugboard_init();
+	if (machine_is_omap_zoom2()) {
+		omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+	} else if (machine_is_omap_zoom3()) {
+		omap3_mux_init(board_mux, OMAP_PACKAGE_CBP);
+		omap_mux_init_gpio(ZOOM3_EHCI_RESET_GPIO, OMAP_PIN_OUTPUT);
+		usb_ehci_init(&ehci_pdata);
+	}
 
-	omap_mux_init_gpio(64, OMAP_PIN_OUTPUT);
-	usb_ehci_init(&ehci_pdata);
+	board_nand_init(zoom_nand_partitions,
+			ARRAY_SIZE(zoom_nand_partitions), ZOOM_NAND_CS);
+	zoom_debugboard_init();
+	zoom_peripherals_init();
 }
 
+MACHINE_START(OMAP_ZOOM2, "OMAP Zoom2 board")
+	.boot_params	= 0x80000100,
+	.map_io		= omap3_map_io,
+	.reserve	= omap_reserve,
+	.init_irq	= omap_zoom_init_irq,
+	.init_machine	= omap_zoom_init,
+	.timer		= &omap_timer,
+MACHINE_END
+
 MACHINE_START(OMAP_ZOOM3, "OMAP Zoom3 board")
 	.boot_params	= 0x80000100,
 	.map_io		= omap3_map_io,
diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
deleted file mode 100644
index 2992a9f3a585..000000000000
--- a/arch/arm/mach-omap2/board-zoom2.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Copyright (C) 2009 Texas Instruments Inc.
- * Mikkel Christensen <mlc@ti.com>
- *
- * Modified from mach-omap2/board-ldp.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/input.h>
-#include <linux/gpio.h>
-#include <linux/i2c/twl.h>
-
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-
-#include <plat/common.h>
-#include <plat/board.h>
-
-#include <mach/board-zoom.h>
-
-#include "board-flash.h"
-#include "mux.h"
-#include "sdram-micron-mt46h32m32lf-6.h"
-
-static void __init omap_zoom2_init_irq(void)
-{
-	omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
-				 mt46h32m32lf6_sdrc_params);
-	omap_init_irq();
-	omap_gpio_init();
-}
-
-#ifdef CONFIG_OMAP_MUX
-static struct omap_board_mux board_mux[] __initdata = {
-	/* WLAN IRQ - GPIO 162 */
-	OMAP3_MUX(MCBSP1_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP),
-	/* WLAN POWER ENABLE - GPIO 101 */
-	OMAP3_MUX(CAM_D2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
-	/* WLAN SDIO: MMC3 CMD */
-	OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE3 | OMAP_PIN_INPUT_PULLUP),
-	/* WLAN SDIO: MMC3 CLK */
-	OMAP3_MUX(ETK_CLK, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	/* WLAN SDIO: MMC3 DAT[0-3] */
-	OMAP3_MUX(ETK_D3, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	OMAP3_MUX(ETK_D4, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	OMAP3_MUX(ETK_D5, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	OMAP3_MUX(ETK_D6, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
-	{ .reg_offset = OMAP_MUX_TERMINATOR },
-};
-#else
-#define board_mux	NULL
-#endif
-
-static struct mtd_partition zoom_nand_partitions[] = {
-	/* All the partition sizes are listed in terms of NAND block size */
-	{
-		.name		= "X-Loader-NAND",
-		.offset		= 0,
-		.size		= 4 * (64 * 2048),	/* 512KB, 0x80000 */
-		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
-	},
-	{
-		.name		= "U-Boot-NAND",
-		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
-		.size		= 10 * (64 * 2048),	/* 1.25MB, 0x140000 */
-		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
-	},
-	{
-		.name		= "Boot Env-NAND",
-		.offset		= MTDPART_OFS_APPEND,   /* Offset = 0x1c0000 */
-		.size		= 2 * (64 * 2048),	/* 256KB, 0x40000 */
-	},
-	{
-		.name		= "Kernel-NAND",
-		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x0200000*/
-		.size		= 240 * (64 * 2048),	/* 30M, 0x1E00000 */
-	},
-	{
-		.name		= "system",
-		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x2000000 */
-		.size		= 3328 * (64 * 2048),	/* 416M, 0x1A000000 */
-	},
-	{
-		.name		= "userdata",
-		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x1C000000*/
-		.size		= 256 * (64 * 2048),	/* 32M, 0x2000000 */
-	},
-	{
-		.name		= "cache",
-		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x1E000000*/
-		.size		= 256 * (64 * 2048),	/* 32M, 0x2000000 */
-	},
-};
-
-static void __init omap_zoom2_init(void)
-{
-	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
-	zoom_peripherals_init();
-	board_nand_init(zoom_nand_partitions,
-			ARRAY_SIZE(zoom_nand_partitions), ZOOM_NAND_CS);
-	zoom_debugboard_init();
-}
-
-MACHINE_START(OMAP_ZOOM2, "OMAP Zoom2 board")
-	.boot_params	= 0x80000100,
-	.map_io		= omap3_map_io,
-	.reserve	= omap_reserve,
-	.init_irq	= omap_zoom2_init_irq,
-	.init_machine	= omap_zoom2_init,
-	.timer		= &omap_timer,
-MACHINE_END
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c
index a40457d81927..c85923e56b85 100644
--- a/arch/arm/mach-omap2/pm24xx.c
+++ b/arch/arm/mach-omap2/pm24xx.c
@@ -30,6 +30,7 @@
 #include <linux/irq.h>
 #include <linux/time.h>
 #include <linux/gpio.h>
+#include <linux/console.h>
 
 #include <asm/mach/time.h>
 #include <asm/mach/irq.h>
@@ -118,6 +119,10 @@ static void omap2_enter_full_retention(void)
 	if (omap_irq_pending())
 		goto no_sleep;
 
+	/* Block console output in case it is on one of the OMAP UARTs */
+	if (try_acquire_console_sem())
+		goto no_sleep;
+
 	omap_uart_prepare_idle(0);
 	omap_uart_prepare_idle(1);
 	omap_uart_prepare_idle(2);
@@ -131,6 +136,8 @@ static void omap2_enter_full_retention(void)
 	omap_uart_resume_idle(1);
 	omap_uart_resume_idle(0);
 
+	release_console_sem();
+
 no_sleep:
 	if (omap2_pm_debug) {
 		unsigned long long tmp;
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 75c0cd13ad8e..0ec8a04b7473 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -28,6 +28,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/console.h>
 
 #include <plat/sram.h>
 #include <plat/clockdomain.h>
@@ -385,6 +386,12 @@ void omap_sram_idle(void)
 		omap3_enable_io_chain();
 	}
 
+	/* Block console output in case it is on one of the OMAP UARTs */
+	if (per_next_state < PWRDM_POWER_ON ||
+	    core_next_state < PWRDM_POWER_ON)
+		if (try_acquire_console_sem())
+			goto console_still_active;
+
 	/* PER */
 	if (per_next_state < PWRDM_POWER_ON) {
 		omap_uart_prepare_idle(2);
@@ -463,6 +470,9 @@ void omap_sram_idle(void)
 		omap_uart_resume_idle(3);
 	}
 
+	release_console_sem();
+
+console_still_active:
 	/* Disable IO-PAD and IO-CHAIN wakeup */
 	if (omap3_has_io_wakeup() &&
 	    (per_next_state < PWRDM_POWER_ON ||
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index becf0e38ef7e..9dc077e2d8af 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/serial_8250.h>
 #include <linux/pm_runtime.h>
+#include <linux/console.h>
 
 #ifdef CONFIG_SERIAL_OMAP
 #include <plat/omap-serial.h>
@@ -168,9 +169,9 @@ static inline void serial_write_reg(struct omap_uart_state *uart, int offset,
 
 static inline void __init omap_uart_reset(struct omap_uart_state *uart)
 {
-	serial_write_reg(uart, UART_OMAP_MDR1, 0x07);
+	serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
 	serial_write_reg(uart, UART_OMAP_SCR, 0x08);
-	serial_write_reg(uart, UART_OMAP_MDR1, 0x00);
+	serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE);
 }
 
 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
@@ -218,7 +219,7 @@ static void omap_uart_save_context(struct omap_uart_state *uart)
 		return;
 
 	lcr = serial_read_reg(uart, UART_LCR);
-	serial_write_reg(uart, UART_LCR, 0xBF);
+	serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B);
 	uart->dll = serial_read_reg(uart, UART_DLL);
 	uart->dlh = serial_read_reg(uart, UART_DLM);
 	serial_write_reg(uart, UART_LCR, lcr);
@@ -226,7 +227,7 @@ static void omap_uart_save_context(struct omap_uart_state *uart)
 	uart->sysc = serial_read_reg(uart, UART_OMAP_SYSC);
 	uart->scr = serial_read_reg(uart, UART_OMAP_SCR);
 	uart->wer = serial_read_reg(uart, UART_OMAP_WER);
-	serial_write_reg(uart, UART_LCR, 0x80);
+	serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_A);
 	uart->mcr = serial_read_reg(uart, UART_MCR);
 	serial_write_reg(uart, UART_LCR, lcr);
 
@@ -246,32 +247,35 @@ static void omap_uart_restore_context(struct omap_uart_state *uart)
 	uart->context_valid = 0;
 
 	if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS)
-		omap_uart_mdr1_errataset(uart, 0x07, 0xA0);
+		omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_DISABLE, 0xA0);
 	else
-		serial_write_reg(uart, UART_OMAP_MDR1, 0x7);
-	serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */
+		serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
+
+	serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B);
 	efr = serial_read_reg(uart, UART_EFR);
 	serial_write_reg(uart, UART_EFR, UART_EFR_ECB);
 	serial_write_reg(uart, UART_LCR, 0x0); /* Operational mode */
 	serial_write_reg(uart, UART_IER, 0x0);
-	serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */
+	serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_write_reg(uart, UART_DLL, uart->dll);
 	serial_write_reg(uart, UART_DLM, uart->dlh);
 	serial_write_reg(uart, UART_LCR, 0x0); /* Operational mode */
 	serial_write_reg(uart, UART_IER, uart->ier);
-	serial_write_reg(uart, UART_LCR, 0x80);
+	serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_write_reg(uart, UART_MCR, uart->mcr);
-	serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */
+	serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_write_reg(uart, UART_EFR, efr);
 	serial_write_reg(uart, UART_LCR, UART_LCR_WLEN8);
 	serial_write_reg(uart, UART_OMAP_SCR, uart->scr);
 	serial_write_reg(uart, UART_OMAP_WER, uart->wer);
 	serial_write_reg(uart, UART_OMAP_SYSC, uart->sysc);
+
 	if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS)
-		omap_uart_mdr1_errataset(uart, 0x00, 0xA1);
+		omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_16X_MODE, 0xA1);
 	else
 		/* UART 16x mode */
-		serial_write_reg(uart, UART_OMAP_MDR1, 0x00);
+		serial_write_reg(uart, UART_OMAP_MDR1,
+				UART_OMAP_MDR1_16X_MODE);
 }
 #else
 static inline void omap_uart_save_context(struct omap_uart_state *uart) {}
@@ -406,7 +410,7 @@ void omap_uart_resume_idle(int num)
 	struct omap_uart_state *uart;
 
 	list_for_each_entry(uart, &uart_list, node) {
-		if (num == uart->num) {
+		if (num == uart->num && uart->can_sleep) {
 			omap_uart_enable_clocks(uart);
 
 			/* Check for IO pad wakeup */
@@ -807,6 +811,8 @@ void __init omap_serial_init_port(int port)
 
 	oh->dev_attr = uart;
 
+	acquire_console_sem(); /* in case the earlycon is on the UART */
+
 	/*
 	 * Because of early UART probing, UART did not get idled
 	 * on init.  Now that omap_device is ready, ensure full idle
@@ -831,6 +837,8 @@ void __init omap_serial_init_port(int port)
 	omap_uart_block_sleep(uart);
 	uart->timeout = DEFAULT_TIMEOUT;
 
+	release_console_sem();
+
 	if ((cpu_is_omap34xx() && uart->padconf) ||
 	    (uart->wk_en && uart->wk_mask)) {
 		device_init_wakeup(&od->pdev.dev, true);
diff --git a/arch/arm/mach-s3c2410/h1940-bluetooth.c b/arch/arm/mach-s3c2410/h1940-bluetooth.c
index 8aa2f1902a94..6b86a722a7db 100644
--- a/arch/arm/mach-s3c2410/h1940-bluetooth.c
+++ b/arch/arm/mach-s3c2410/h1940-bluetooth.c
@@ -77,13 +77,13 @@ static int __devinit h1940bt_probe(struct platform_device *pdev)
 
 	/* Configures BT serial port GPIOs */
 	s3c_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
-	s3c_gpio_cfgpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
+	s3c_gpio_setpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
 	s3c_gpio_cfgpin(S3C2410_GPH(1), S3C2410_GPIO_OUTPUT);
-	s3c_gpio_cfgpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
+	s3c_gpio_setpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
 	s3c_gpio_cfgpin(S3C2410_GPH(2), S3C2410_GPH2_TXD0);
-	s3c_gpio_cfgpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
+	s3c_gpio_setpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
 	s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
-	s3c_gpio_cfgpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
+	s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
 
 
 	rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
diff --git a/arch/arm/mach-s3c2416/irq.c b/arch/arm/mach-s3c2416/irq.c
index 084d121f368c..00174daf1526 100644
--- a/arch/arm/mach-s3c2416/irq.c
+++ b/arch/arm/mach-s3c2416/irq.c
@@ -168,12 +168,11 @@ static struct irq_chip s3c2416_irq_dma = {
 
 static void s3c2416_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
 {
-	s3c2416_irq_demux(IRQ_S3C2443_UART3, 3);
+	s3c2416_irq_demux(IRQ_S3C2443_RX3, 3);
 }
 
 #define INTMSK_UART3	(1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
-#define SUBMSK_UART3	(0xf << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
-
+#define SUBMSK_UART3	(0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
 
 static void s3c2416_irq_uart3_mask(unsigned int irqno)
 {
diff --git a/arch/arm/mach-s3c2443/irq.c b/arch/arm/mach-s3c2443/irq.c
index 0e0d693f3974..893424767ce1 100644
--- a/arch/arm/mach-s3c2443/irq.c
+++ b/arch/arm/mach-s3c2443/irq.c
@@ -166,12 +166,11 @@ static struct irq_chip s3c2443_irq_dma = {
 
 static void s3c2443_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
 {
-	s3c2443_irq_demux(IRQ_S3C2443_UART3, 3);
+	s3c2443_irq_demux(IRQ_S3C2443_RX3, 3);
 }
 
 #define INTMSK_UART3	(1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
-#define SUBMSK_UART3	(0xf << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
-
+#define SUBMSK_UART3	(0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
 
 static void s3c2443_irq_uart3_mask(unsigned int irqno)
 {
diff --git a/arch/arm/mach-s3c64xx/mach-mini6410.c b/arch/arm/mach-s3c64xx/mach-mini6410.c
index 249c62956471..89f35e02e883 100644
--- a/arch/arm/mach-s3c64xx/mach-mini6410.c
+++ b/arch/arm/mach-s3c64xx/mach-mini6410.c
@@ -45,7 +45,7 @@
 
 #include <video/platform_lcd.h>
 
-#define UCON (S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK)
+#define UCON S3C2410_UCON_DEFAULT
 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
 
diff --git a/arch/arm/mach-s3c64xx/mach-real6410.c b/arch/arm/mach-s3c64xx/mach-real6410.c
index f9ef9b5c5f5a..4957ab0a0d4a 100644
--- a/arch/arm/mach-s3c64xx/mach-real6410.c
+++ b/arch/arm/mach-s3c64xx/mach-real6410.c
@@ -46,7 +46,7 @@
 
 #include <video/platform_lcd.h>
 
-#define UCON (S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK)
+#define UCON S3C2410_UCON_DEFAULT
 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
 
diff --git a/arch/arm/mach-s5pv210/mach-smdkc110.c b/arch/arm/mach-s5pv210/mach-smdkc110.c
index 0ad7924fe62e..5dd1681c069e 100644
--- a/arch/arm/mach-s5pv210/mach-smdkc110.c
+++ b/arch/arm/mach-s5pv210/mach-smdkc110.c
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/serial_core.h>
 #include <linux/i2c.h>
+#include <linux/sysdev.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210.c b/arch/arm/mach-s5pv210/mach-smdkv210.c
index bcd7a5d53401..1fbc45b2a432 100644
--- a/arch/arm/mach-s5pv210/mach-smdkv210.c
+++ b/arch/arm/mach-s5pv210/mach-smdkv210.c
@@ -13,6 +13,7 @@
 #include <linux/i2c.h>
 #include <linux/init.h>
 #include <linux/serial_core.h>
+#include <linux/sysdev.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index d3260542b943..d440e5f456ad 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -567,38 +567,127 @@ static struct platform_device *qhd_devices[] __initdata = {
 
 /* FSI */
 #define IRQ_FSI		evt2irq(0x1840)
+static int __fsi_set_rate(struct clk *clk, long rate, int enable)
+{
+	int ret = 0;
 
-static int fsi_set_rate(int is_porta, int rate)
+	if (rate <= 0)
+		return ret;
+
+	if (enable) {
+		ret = clk_set_rate(clk, rate);
+		if (0 == ret)
+			ret = clk_enable(clk);
+	} else {
+		clk_disable(clk);
+	}
+
+	return ret;
+}
+
+static int __fsi_set_round_rate(struct clk *clk, long rate, int enable)
+{
+	return __fsi_set_rate(clk, clk_round_rate(clk, rate), enable);
+}
+
+static int fsi_ak4642_set_rate(struct device *dev, int rate, int enable)
+{
+	struct clk *fsia_ick;
+	struct clk *fsiack;
+	int ret = -EIO;
+
+	fsia_ick = clk_get(dev, "icka");
+	if (IS_ERR(fsia_ick))
+		return PTR_ERR(fsia_ick);
+
+	/*
+	 * FSIACK is connected to AK4642,
+	 * and use external clock pin from it.
+	 * it is parent of fsia_ick now.
+	 */
+	fsiack = clk_get_parent(fsia_ick);
+	if (!fsiack)
+		goto fsia_ick_out;
+
+	/*
+	 * we get 1/1 divided clock by setting same rate to fsiack and fsia_ick
+	 *
+	 ** FIXME **
+	 * Because the freq_table of external clk (fsiack) are all 0,
+	 * the return value of clk_round_rate became 0.
+	 * So, it use __fsi_set_rate here.
+	 */
+	ret = __fsi_set_rate(fsiack, rate, enable);
+	if (ret < 0)
+		goto fsiack_out;
+
+	ret = __fsi_set_round_rate(fsia_ick, rate, enable);
+	if ((ret < 0) && enable)
+		__fsi_set_round_rate(fsiack, rate, 0); /* disable FSI ACK */
+
+fsiack_out:
+	clk_put(fsiack);
+
+fsia_ick_out:
+	clk_put(fsia_ick);
+
+	return 0;
+}
+
+static int fsi_hdmi_set_rate(struct device *dev, int rate, int enable)
 {
 	struct clk *fsib_clk;
 	struct clk *fdiv_clk = &sh7372_fsidivb_clk;
+	long fsib_rate = 0;
+	long fdiv_rate = 0;
+	int ackmd_bpfmd;
 	int ret;
 
-	/* set_rate is not needed if port A */
-	if (is_porta)
-		return 0;
-
-	fsib_clk = clk_get(NULL, "fsib_clk");
-	if (IS_ERR(fsib_clk))
-		return -EINVAL;
-
 	switch (rate) {
 	case 44100:
-		clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 11283000));
-		ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
+		fsib_rate	= rate * 256;
+		ackmd_bpfmd	= SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
 		break;
 	case 48000:
-		clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 85428000));
-		clk_set_rate(fdiv_clk, clk_round_rate(fdiv_clk, 12204000));
-		ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
+		fsib_rate	= 85428000; /* around 48kHz x 256 x 7 */
+		fdiv_rate	= rate * 256;
+		ackmd_bpfmd	= SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
 		break;
 	default:
 		pr_err("unsupported rate in FSI2 port B\n");
-		ret = -EINVAL;
-		break;
+		return -EINVAL;
 	}
 
+	/* FSI B setting */
+	fsib_clk = clk_get(dev, "ickb");
+	if (IS_ERR(fsib_clk))
+		return -EIO;
+
+	ret = __fsi_set_round_rate(fsib_clk, fsib_rate, enable);
 	clk_put(fsib_clk);
+	if (ret < 0)
+		return ret;
+
+	/* FSI DIV setting */
+	ret = __fsi_set_round_rate(fdiv_clk, fdiv_rate, enable);
+	if (ret < 0) {
+		/* disable FSI B */
+		if (enable)
+			__fsi_set_round_rate(fsib_clk, fsib_rate, 0);
+		return ret;
+	}
+
+	return ackmd_bpfmd;
+}
+
+static int fsi_set_rate(struct device *dev, int is_porta, int rate, int enable)
+{
+	int ret;
+
+	if (is_porta)
+		ret = fsi_ak4642_set_rate(dev, rate, enable);
+	else
+		ret = fsi_hdmi_set_rate(dev, rate, enable);
 
 	return ret;
 }
@@ -880,6 +969,11 @@ static int __init hdmi_init_pm_clock(void)
 		goto out;
 	}
 
+	ret = clk_enable(&sh7372_pllc2_clk);
+	if (ret < 0) {
+		pr_err("Cannot enable pllc2 clock\n");
+		goto out;
+	}
 	pr_debug("PLLC2 set frequency %lu\n", rate);
 
 	ret = clk_set_parent(hdmi_ick, &sh7372_pllc2_clk);
@@ -896,23 +990,11 @@ out:
 
 device_initcall(hdmi_init_pm_clock);
 
-#define FSIACK_DUMMY_RATE 48000
 static int __init fsi_init_pm_clock(void)
 {
 	struct clk *fsia_ick;
 	int ret;
 
-	/*
-	 * FSIACK is connected to AK4642,
-	 * and the rate is depend on playing sound rate.
-	 * So, set dummy rate (= 48k) here
-	 */
-	ret = clk_set_rate(&sh7372_fsiack_clk, FSIACK_DUMMY_RATE);
-	if (ret < 0) {
-		pr_err("Cannot set FSIACK dummy rate: %d\n", ret);
-		return ret;
-	}
-
 	fsia_ick = clk_get(&fsi_device.dev, "icka");
 	if (IS_ERR(fsia_ick)) {
 		ret = PTR_ERR(fsia_ick);
@@ -921,16 +1003,9 @@ static int __init fsi_init_pm_clock(void)
 	}
 
 	ret = clk_set_parent(fsia_ick, &sh7372_fsiack_clk);
-	if (ret < 0) {
-		pr_err("Cannot set FSI-A parent: %d\n", ret);
-		goto out;
-	}
-
-	ret = clk_set_rate(fsia_ick, FSIACK_DUMMY_RATE);
 	if (ret < 0)
-		pr_err("Cannot set FSI-A rate: %d\n", ret);
+		pr_err("Cannot set FSI-A parent: %d\n", ret);
 
-out:
 	clk_put(fsia_ick);
 
 	return ret;
diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c
index b25ce90a346e..3aa026069435 100644
--- a/arch/arm/mach-shmobile/clock-sh7372.c
+++ b/arch/arm/mach-shmobile/clock-sh7372.c
@@ -229,21 +229,13 @@ static int pllc2_set_rate(struct clk *clk, unsigned long rate)
 	if (idx < 0)
 		return idx;
 
-	if (rate == clk->parent->rate) {
-		pllc2_disable(clk);
-		return 0;
-	}
+	if (rate == clk->parent->rate)
+		return -EINVAL;
 
 	value = __raw_readl(PLLC2CR) & ~(0x3f << 24);
 
-	if (value & 0x80000000)
-		pllc2_disable(clk);
-
 	__raw_writel((value & ~0x80000000) | ((idx + 19) << 24), PLLC2CR);
 
-	if (value & 0x80000000)
-		return pllc2_enable(clk);
-
 	return 0;
 }
 
@@ -452,10 +444,8 @@ static int fsidiv_enable(struct clk *clk)
 	unsigned long value;
 
 	value  = __raw_readl(clk->mapping->base) >> 16;
-	if (value < 2) {
-		fsidiv_disable(clk);
-		return -ENOENT;
-	}
+	if (value < 2)
+		return -EIO;
 
 	__raw_writel((value << 16) | 0x3, clk->mapping->base);
 
@@ -466,17 +456,12 @@ static int fsidiv_set_rate(struct clk *clk, unsigned long rate)
 {
 	int idx;
 
-	if (clk->parent->rate == rate) {
-		fsidiv_disable(clk);
-		return 0;
-	}
-
 	idx = (clk->parent->rate / rate) & 0xffff;
 	if (idx < 2)
-		return -ENOENT;
+		return -EINVAL;
 
 	__raw_writel(idx << 16, clk->mapping->base);
-	return fsidiv_enable(clk);
+	return 0;
 }
 
 static struct clk_ops fsidiv_clk_ops = {
@@ -607,8 +592,6 @@ static struct clk_lookup lookups[] = {
 	CLKDEV_CON_ID("vck3_clk", &div6_clks[DIV6_VCK3]),
 	CLKDEV_CON_ID("fmsi_clk", &div6_clks[DIV6_FMSI]),
 	CLKDEV_CON_ID("fmso_clk", &div6_clks[DIV6_FMSO]),
-	CLKDEV_CON_ID("fsia_clk", &div6_reparent_clks[DIV6_FSIA]),
-	CLKDEV_CON_ID("fsib_clk", &div6_reparent_clks[DIV6_FSIB]),
 	CLKDEV_CON_ID("sub_clk", &div6_clks[DIV6_SUB]),
 	CLKDEV_CON_ID("spu_clk", &div6_clks[DIV6_SPU]),
 	CLKDEV_CON_ID("vou_clk", &div6_clks[DIV6_VOU]),
@@ -645,8 +628,8 @@ static struct clk_lookup lookups[] = {
 	CLKDEV_DEV_ID("sh_cmt.10", &mstp_clks[MSTP329]), /* CMT10 */
 	CLKDEV_DEV_ID("sh_fsi2", &mstp_clks[MSTP328]), /* FSI2 */
 	CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), /* IIC1 */
-	CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[MSTP323]), /* USB0 */
-	CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[MSTP323]), /* USB0 */
+	CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[MSTP322]), /* USB0 */
+	CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[MSTP322]), /* USB0 */
 	CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
 	CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
 	CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMC */
diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
index c8dae02f0704..b3e0bad9b77e 100644
--- a/arch/arm/plat-omap/include/plat/omap-serial.h
+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -31,20 +31,8 @@
  */
 #define OMAP_SERIAL_NAME	"ttyO"
 
-#define OMAP_MDR1_DISABLE	0x07
-#define OMAP_MDR1_MODE13X	0x03
-#define OMAP_MDR1_MODE16X	0x00
 #define OMAP_MODE13X_SPEED	230400
 
-/*
- * LCR = 0XBF: Switch to Configuration Mode B.
- * In configuration mode b allow access
- * to EFR,DLL,DLH.
- * Reference OMAP TRM Chapter 17
- * Section: 1.4.3 Mode Selection
- */
-#define OMAP_UART_LCR_CONF_MDB	0XBF
-
 /* WER = 0x7F
  * Enable module level wakeup in WER reg
  */
diff --git a/arch/arm/plat-omap/include/plat/uncompress.h b/arch/arm/plat-omap/include/plat/uncompress.h
index 9036e374e0ac..229fbf2cbd26 100644
--- a/arch/arm/plat-omap/include/plat/uncompress.h
+++ b/arch/arm/plat-omap/include/plat/uncompress.h
@@ -145,6 +145,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id)
 		/* omap3 based boards using UART3 */
 		DEBUG_LL_OMAP3(3, cm_t35);
 		DEBUG_LL_OMAP3(3, cm_t3517);
+		DEBUG_LL_OMAP3(3, craneboard);
 		DEBUG_LL_OMAP3(3, igep0020);
 		DEBUG_LL_OMAP3(3, igep0030);
 		DEBUG_LL_OMAP3(3, nokia_rx51);
diff --git a/arch/arm/plat-pxa/include/plat/sdhci.h b/arch/arm/plat-pxa/include/plat/sdhci.h
index e49c5b6fc4e2..1ab332e37d7d 100644
--- a/arch/arm/plat-pxa/include/plat/sdhci.h
+++ b/arch/arm/plat-pxa/include/plat/sdhci.h
@@ -17,6 +17,9 @@
 /* Require clock free running */
 #define PXA_FLAG_DISABLE_CLOCK_GATING (1<<0)
 
+/* Board design supports 8-bit data on SD/SDIO BUS */
+#define PXA_FLAG_SD_8_BIT_CAPABLE_SLOT (1<<2)
+
 /*
  * struct pxa_sdhci_platdata() - Platform device data for PXA SDHCI
  * @max_speed: the maximum speed supported
diff --git a/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
index 9793544a6ace..704175b0573f 100644
--- a/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
+++ b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
@@ -29,8 +29,8 @@ void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi,
 	} else {
 		s3c_gpio_cfgpin(S3C2410_GPE(13), S3C2410_GPIO_INPUT);
 		s3c_gpio_cfgpin(S3C2410_GPE(11), S3C2410_GPIO_INPUT);
-		s3c_gpio_cfgpull(S3C2410_GPE(11), S3C_GPIO_PULL_NONE);
-		s3c_gpio_cfgpull(S3C2410_GPE(12), S3C_GPIO_PULL_NONE);
-		s3c_gpio_cfgpull(S3C2410_GPE(13), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPE(11), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPE(12), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPE(13), S3C_GPIO_PULL_NONE);
 	}
 }
diff --git a/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c b/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
index db9e9e477ec1..72457afd6255 100644
--- a/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
+++ b/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
@@ -31,8 +31,8 @@ void s3c24xx_spi_gpiocfg_bus1_gpd8_9_10(struct s3c2410_spi_info *spi,
 	} else {
 		s3c_gpio_cfgpin(S3C2410_GPD(8), S3C2410_GPIO_INPUT);
 		s3c_gpio_cfgpin(S3C2410_GPD(9), S3C2410_GPIO_INPUT);
-		s3c_gpio_cfgpull(S3C2410_GPD(10), S3C_GPIO_PULL_NONE);
-		s3c_gpio_cfgpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE);
-		s3c_gpio_cfgpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPD(10), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE);
 	}
 }
diff --git a/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c b/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c
index 8ea663a438bb..c3972b645d13 100644
--- a/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c
+++ b/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c
@@ -29,8 +29,8 @@ void s3c24xx_spi_gpiocfg_bus1_gpg5_6_7(struct s3c2410_spi_info *spi,
 	} else {
 		s3c_gpio_cfgpin(S3C2410_GPG(7), S3C2410_GPIO_INPUT);
 		s3c_gpio_cfgpin(S3C2410_GPG(5), S3C2410_GPIO_INPUT);
-		s3c_gpio_cfgpull(S3C2410_GPG(5), S3C_GPIO_PULL_NONE);
-		s3c_gpio_cfgpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE);
-		s3c_gpio_cfgpull(S3C2410_GPG(7), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPG(5), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE);
+		s3c_gpio_setpull(S3C2410_GPG(7), S3C_GPIO_PULL_NONE);
 	}
 }
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index 2c7e801ab20b..6a3997f98dfb 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -92,7 +92,7 @@ static void pte_free_rcu_callback(struct rcu_head *head)
 
 static void pte_free_submit(struct pte_freelist_batch *batch)
 {
-	call_rcu(&batch->rcu, pte_free_rcu_callback);
+	call_rcu_sched(&batch->rcu, pte_free_rcu_callback);
 }
 
 void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index ac151399ef34..1995c1712fc8 100644
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -95,7 +95,6 @@ EXPORT_SYMBOL_GPL(s390_handle_mcck);
 static int notrace s390_revalidate_registers(struct mci *mci)
 {
 	int kill_task;
-	u64 tmpclock;
 	u64 zero;
 	void *fpt_save_area, *fpt_creg_save_area;
 
@@ -214,11 +213,10 @@ static int notrace s390_revalidate_registers(struct mci *mci)
 			: "0", "cc");
 #endif
 	/* Revalidate clock comparator register */
-	asm volatile(
-		"	stck	0(%1)\n"
-		"	sckc	0(%1)"
-		: "=m" (tmpclock) : "a" (&(tmpclock)) : "cc", "memory");
-
+	if (S390_lowcore.clock_comparator == -1)
+		set_clock_comparator(S390_lowcore.mcck_clock);
+	else
+		set_clock_comparator(S390_lowcore.clock_comparator);
 	/* Check if old PSW is valid */
 	if (!mci->wp)
 		/*
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index 752b362bf651..7c37ec359ec2 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -29,17 +29,21 @@ static void __udelay_disabled(unsigned long long usecs)
 {
 	unsigned long mask, cr0, cr0_saved;
 	u64 clock_saved;
+	u64 end;
 
+	mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT;
+	end = get_clock() + (usecs << 12);
 	clock_saved = local_tick_disable();
-	set_clock_comparator(get_clock() + (usecs << 12));
 	__ctl_store(cr0_saved, 0, 0);
 	cr0 = (cr0_saved & 0xffff00e0) | 0x00000800;
 	__ctl_load(cr0 , 0, 0);
-	mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT;
 	lockdep_off();
-	trace_hardirqs_on();
-	__load_psw_mask(mask);
-	local_irq_disable();
+	do {
+		set_clock_comparator(end);
+		trace_hardirqs_on();
+		__load_psw_mask(mask);
+		local_irq_disable();
+	} while (get_clock() < end);
 	lockdep_on();
 	__ctl_load(cr0_saved, 0, 0);
 	local_tick_enable(clock_saved);
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 07ec8a865c1d..e11b5fcb70eb 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -329,6 +329,18 @@ endmenu  # Tilera-specific configuration
 
 menu "Bus options"
 
+config PCI
+	bool "PCI support"
+	default y
+	select PCI_DOMAINS
+	---help---
+	  Enable PCI root complex support, so PCIe endpoint devices can
+	  be attached to the Tile chip.  Many, but not all, PCI devices
+	  are supported under Tilera's root complex driver.
+
+config PCI_DOMAINS
+	bool
+
 config NO_IOMEM
 	def_bool !PCI
 
diff --git a/arch/tile/include/asm/cacheflush.h b/arch/tile/include/asm/cacheflush.h
index c5741da4eeac..14a3f8556ace 100644
--- a/arch/tile/include/asm/cacheflush.h
+++ b/arch/tile/include/asm/cacheflush.h
@@ -137,4 +137,56 @@ static inline void finv_buffer(void *buffer, size_t size)
 	mb_incoherent();
 }
 
+/*
+ * Flush & invalidate a VA range that is homed remotely on a single core,
+ * waiting until the memory controller holds the flushed values.
+ */
+static inline void finv_buffer_remote(void *buffer, size_t size)
+{
+	char *p;
+	int i;
+
+	/*
+	 * Flush and invalidate the buffer out of the local L1/L2
+	 * and request the home cache to flush and invalidate as well.
+	 */
+	__finv_buffer(buffer, size);
+
+	/*
+	 * Wait for the home cache to acknowledge that it has processed
+	 * all the flush-and-invalidate requests.  This does not mean
+	 * that the flushed data has reached the memory controller yet,
+	 * but it does mean the home cache is processing the flushes.
+	 */
+	__insn_mf();
+
+	/*
+	 * Issue a load to the last cache line, which can't complete
+	 * until all the previously-issued flushes to the same memory
+	 * controller have also completed.  If we weren't striping
+	 * memory, that one load would be sufficient, but since we may
+	 * be, we also need to back up to the last load issued to
+	 * another memory controller, which would be the point where
+	 * we crossed an 8KB boundary (the granularity of striping
+	 * across memory controllers).  Keep backing up and doing this
+	 * until we are before the beginning of the buffer, or have
+	 * hit all the controllers.
+	 */
+	for (i = 0, p = (char *)buffer + size - 1;
+	     i < (1 << CHIP_LOG_NUM_MSHIMS()) && p >= (char *)buffer;
+	     ++i) {
+		const unsigned long STRIPE_WIDTH = 8192;
+
+		/* Force a load instruction to issue. */
+		*(volatile char *)p;
+
+		/* Jump to end of previous stripe. */
+		p -= STRIPE_WIDTH;
+		p = (char *)((unsigned long)p | (STRIPE_WIDTH - 1));
+	}
+
+	/* Wait for the loads (and thus flushes) to have completed. */
+	__insn_mf();
+}
+
 #endif /* _ASM_TILE_CACHEFLUSH_H */
diff --git a/arch/tile/include/asm/io.h b/arch/tile/include/asm/io.h
index ee43328713ab..d3cbb9b14cbe 100644
--- a/arch/tile/include/asm/io.h
+++ b/arch/tile/include/asm/io.h
@@ -55,9 +55,6 @@ extern void iounmap(volatile void __iomem *addr);
 #define ioremap_writethrough(physaddr, size)	ioremap(physaddr, size)
 #define ioremap_fullcache(physaddr, size)	ioremap(physaddr, size)
 
-void __iomem *ioport_map(unsigned long port, unsigned int len);
-extern inline void ioport_unmap(void __iomem *addr) {}
-
 #define mmiowb()
 
 /* Conversion between virtual and physical mappings.  */
@@ -189,12 +186,22 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
  * we never run, uses them unconditionally.
  */
 
-static inline int ioport_panic(void)
+static inline long ioport_panic(void)
 {
 	panic("inb/outb and friends do not exist on tile");
 	return 0;
 }
 
+static inline void __iomem *ioport_map(unsigned long port, unsigned int len)
+{
+	return (void __iomem *) ioport_panic();
+}
+
+static inline void ioport_unmap(void __iomem *addr)
+{
+	ioport_panic();
+}
+
 static inline u8 inb(unsigned long addr)
 {
 	return ioport_panic();
diff --git a/arch/tile/include/asm/pci-bridge.h b/arch/tile/include/asm/pci-bridge.h
deleted file mode 100644
index e853b0e2793b..000000000000
--- a/arch/tile/include/asm/pci-bridge.h
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- */
-
-#ifndef _ASM_TILE_PCI_BRIDGE_H
-#define _ASM_TILE_PCI_BRIDGE_H
-
-#include <linux/ioport.h>
-#include <linux/pci.h>
-
-struct device_node;
-struct pci_controller;
-
-/*
- * pci_io_base returns the memory address at which you can access
- * the I/O space for PCI bus number `bus' (or NULL on error).
- */
-extern void __iomem *pci_bus_io_base(unsigned int bus);
-extern unsigned long pci_bus_io_base_phys(unsigned int bus);
-extern unsigned long pci_bus_mem_base_phys(unsigned int bus);
-
-/* Allocate a new PCI host bridge structure */
-extern struct pci_controller *pcibios_alloc_controller(void);
-
-/* Helper function for setting up resources */
-extern void pci_init_resource(struct resource *res, unsigned long start,
-			      unsigned long end, int flags, char *name);
-
-/* Get the PCI host controller for a bus */
-extern struct pci_controller *pci_bus_to_hose(int bus);
-
-/*
- * Structure of a PCI controller (host bridge)
- */
-struct pci_controller {
-	int index;		/* PCI domain number */
-	struct pci_bus *root_bus;
-
-	int first_busno;
-	int last_busno;
-
-	int hv_cfg_fd[2];	/* config{0,1} fds for this PCIe controller */
-	int hv_mem_fd;		/* fd to Hypervisor for MMIO operations */
-
-	struct pci_ops *ops;
-
-	int irq_base;		/* Base IRQ from the Hypervisor	*/
-	int plx_gen1;		/* flag for PLX Gen 1 configuration */
-
-	/* Address ranges that are routed to this controller/bridge. */
-	struct resource mem_resources[3];
-};
-
-static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
-{
-	return bus->sysdata;
-}
-
-extern void setup_indirect_pci_nomap(struct pci_controller *hose,
-			       void __iomem *cfg_addr, void __iomem *cfg_data);
-extern void setup_indirect_pci(struct pci_controller *hose,
-			       u32 cfg_addr, u32 cfg_data);
-extern void setup_grackle(struct pci_controller *hose);
-
-extern unsigned char common_swizzle(struct pci_dev *, unsigned char *);
-
-/*
- *   The following code swizzles for exactly one bridge.  The routine
- *   common_swizzle below handles multiple bridges.  But there are a
- *   some boards that don't follow the PCI spec's suggestion so we
- *   break this piece out separately.
- */
-static inline unsigned char bridge_swizzle(unsigned char pin,
-		unsigned char idsel)
-{
-	return (((pin-1) + idsel) % 4) + 1;
-}
-
-/*
- * The following macro is used to lookup irqs in a standard table
- * format for those PPC systems that do not already have PCI
- * interrupts properly routed.
- */
-/* FIXME - double check this */
-#define PCI_IRQ_TABLE_LOOKUP ({ \
-	long _ctl_ = -1; \
-	if (idsel >= min_idsel && idsel <= max_idsel && pin <= irqs_per_slot) \
-		_ctl_ = pci_irq_table[idsel - min_idsel][pin-1]; \
-	_ctl_; \
-})
-
-/*
- * Scan the buses below a given PCI host bridge and assign suitable
- * resources to all devices found.
- */
-extern int pciauto_bus_scan(struct pci_controller *, int);
-
-#ifdef CONFIG_PCI
-extern unsigned long pci_address_to_pio(phys_addr_t address);
-#else
-static inline unsigned long pci_address_to_pio(phys_addr_t address)
-{
-	return (unsigned long)-1;
-}
-#endif
-
-#endif /* _ASM_TILE_PCI_BRIDGE_H */
diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h
index b0c15da2d5d5..c3fc458a0d32 100644
--- a/arch/tile/include/asm/pci.h
+++ b/arch/tile/include/asm/pci.h
@@ -15,7 +15,29 @@
 #ifndef _ASM_TILE_PCI_H
 #define _ASM_TILE_PCI_H
 
-#include <asm/pci-bridge.h>
+#include <linux/pci.h>
+
+/*
+ * Structure of a PCI controller (host bridge)
+ */
+struct pci_controller {
+	int index;		/* PCI domain number */
+	struct pci_bus *root_bus;
+
+	int first_busno;
+	int last_busno;
+
+	int hv_cfg_fd[2];	/* config{0,1} fds for this PCIe controller */
+	int hv_mem_fd;		/* fd to Hypervisor for MMIO operations */
+
+	struct pci_ops *ops;
+
+	int irq_base;		/* Base IRQ from the Hypervisor	*/
+	int plx_gen1;		/* flag for PLX Gen 1 configuration */
+
+	/* Address ranges that are routed to this controller/bridge. */
+	struct resource mem_resources[3];
+};
 
 /*
  * The hypervisor maps the entirety of CPA-space as bus addresses, so
@@ -24,57 +46,13 @@
  */
 #define PCI_DMA_BUS_IS_PHYS     1
 
-struct pci_controller *pci_bus_to_hose(int bus);
-unsigned char __init common_swizzle(struct pci_dev *dev, unsigned char *pinp);
 int __init tile_pci_init(void);
-void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
+
 void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr) {}
+
 void __devinit pcibios_fixup_bus(struct pci_bus *bus);
 
-int __devinit _tile_cfg_read(struct pci_controller *hose,
-				    int bus,
-				    int slot,
-				    int function,
-				    int offset,
-				    int size,
-				    u32 *val);
-int __devinit _tile_cfg_write(struct pci_controller *hose,
-				     int bus,
-				     int slot,
-				     int function,
-				     int offset,
-				     int size,
-				     u32 val);
-
-/*
- * These are used to to config reads and writes in the early stages of
- * setup before the driver infrastructure has been set up enough to be
- * able to do config reads and writes.
- */
-#define early_cfg_read(where, size, value) \
-	_tile_cfg_read(controller, \
-		       current_bus, \
-		       pci_slot, \
-		       pci_fn, \
-		       where, \
-		       size, \
-		       value)
-
-#define early_cfg_write(where, size, value) \
-	_tile_cfg_write(controller, \
-		       current_bus, \
-		       pci_slot, \
-		       pci_fn, \
-		       where, \
-		       size, \
-		       value)
-
-
-
-#define PCICFG_BYTE	1
-#define PCICFG_WORD	2
-#define PCICFG_DWORD	4
-
 #define	TILE_NUM_PCIE	2
 
 #define pci_domain_nr(bus) (((struct pci_controller *)(bus)->sysdata)->index)
@@ -88,33 +66,33 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 }
 
 /*
- * I/O space is currently not supported.
+ * pcibios_assign_all_busses() tells whether or not the bus numbers
+ * should be reassigned, in case the BIOS didn't do it correctly, or
+ * in case we don't have a BIOS and we want to let Linux do it.
  */
+static inline int pcibios_assign_all_busses(void)
+{
+	return 1;
+}
 
-#define TILE_PCIE_LOWER_IO		0x0
-#define TILE_PCIE_UPPER_IO		0x10000
-#define TILE_PCIE_PCIE_IO_SIZE		0x0000FFFF
-
-#define _PAGE_NO_CACHE		0
-#define _PAGE_GUARDED		0
-
-
-#define pcibios_assign_all_busses()    pci_assign_all_buses
-extern int pci_assign_all_buses;
-
+/*
+ * No special bus mastering setup handling.
+ */
 static inline void pcibios_set_master(struct pci_dev *dev)
 {
-	/* No special bus mastering setup handling */
 }
 
 #define PCIBIOS_MIN_MEM		0
-#define PCIBIOS_MIN_IO		TILE_PCIE_LOWER_IO
+#define PCIBIOS_MIN_IO		0
 
 /*
  * This flag tells if the platform is TILEmpower that needs
  * special configuration for the PLX switch chip.
  */
-extern int blade_pci;
+extern int tile_plx_gen1;
+
+/* Use any cpu for PCI. */
+#define cpumask_of_pcibus(bus) cpu_online_mask
 
 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 #include <asm-generic/pci-dma-compat.h>
@@ -122,7 +100,4 @@ extern int blade_pci;
 /* generic pci stuff */
 #include <asm-generic/pci.h>
 
-/* Use any cpu for PCI. */
-#define cpumask_of_pcibus(bus) cpu_online_mask
-
 #endif /* _ASM_TILE_PCI_H */
diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h
index 1747ff3946b2..a9e7c8760334 100644
--- a/arch/tile/include/asm/processor.h
+++ b/arch/tile/include/asm/processor.h
@@ -292,8 +292,18 @@ extern int kstack_hash;
 /* Are we using huge pages in the TLB for kernel data? */
 extern int kdata_huge;
 
+/* Support standard Linux prefetching. */
+#define ARCH_HAS_PREFETCH
+#define prefetch(x) __builtin_prefetch(x)
 #define PREFETCH_STRIDE CHIP_L2_LINE_SIZE()
 
+/* Bring a value into the L1D, faulting the TLB if necessary. */
+#ifdef __tilegx__
+#define prefetch_L1(x) __insn_prefetch_l1_fault((void *)(x))
+#else
+#define prefetch_L1(x) __insn_prefetch_L1((void *)(x))
+#endif
+
 #else /* __ASSEMBLY__ */
 
 /* Do some slow action (e.g. read a slow SPR). */
diff --git a/arch/tile/include/hv/drv_xgbe_impl.h b/arch/tile/include/hv/drv_xgbe_impl.h
new file mode 100644
index 000000000000..3a73b2b44913
--- /dev/null
+++ b/arch/tile/include/hv/drv_xgbe_impl.h
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/**
+ * @file drivers/xgbe/impl.h
+ * Implementation details for the NetIO library.
+ */
+
+#ifndef __DRV_XGBE_IMPL_H__
+#define __DRV_XGBE_IMPL_H__
+
+#include <hv/netio_errors.h>
+#include <hv/netio_intf.h>
+#include <hv/drv_xgbe_intf.h>
+
+
+/** How many groups we have (log2). */
+#define LOG2_NUM_GROUPS (12)
+/** How many groups we have. */
+#define NUM_GROUPS (1 << LOG2_NUM_GROUPS)
+
+/** Number of output requests we'll buffer per tile. */
+#define EPP_REQS_PER_TILE (32)
+
+/** Words used in an eDMA command without checksum acceleration. */
+#define EDMA_WDS_NO_CSUM      8
+/** Words used in an eDMA command with checksum acceleration. */
+#define EDMA_WDS_CSUM        10
+/** Total available words in the eDMA command FIFO. */
+#define EDMA_WDS_TOTAL      128
+
+
+/*
+ * FIXME: These definitions are internal and should have underscores!
+ * NOTE: The actual numeric values here are intentional and allow us to
+ * optimize the concept "if small ... else if large ... else ...", by
+ * checking for the low bit being set, and then for non-zero.
+ * These are used as array indices, so they must have the values (0, 1, 2)
+ * in some order.
+ */
+#define SIZE_SMALL (1)       /**< Small packet queue. */
+#define SIZE_LARGE (2)       /**< Large packet queue. */
+#define SIZE_JUMBO (0)       /**< Jumbo packet queue. */
+
+/** The number of "SIZE_xxx" values. */
+#define NETIO_NUM_SIZES 3
+
+
+/*
+ * Default numbers of packets for IPP drivers.  These values are chosen
+ * such that CIPP1 will not overflow its L2 cache.
+ */
+
+/** The default number of small packets. */
+#define NETIO_DEFAULT_SMALL_PACKETS 2750
+/** The default number of large packets. */
+#define NETIO_DEFAULT_LARGE_PACKETS 2500
+/** The default number of jumbo packets. */
+#define NETIO_DEFAULT_JUMBO_PACKETS 250
+
+
+/** Log2 of the size of a memory arena. */
+#define NETIO_ARENA_SHIFT      24      /* 16 MB */
+/** Size of a memory arena. */
+#define NETIO_ARENA_SIZE       (1 << NETIO_ARENA_SHIFT)
+
+
+/** A queue of packets.
+ *
+ * This structure partially defines a queue of packets waiting to be
+ * processed.  The queue as a whole is written to by an interrupt handler and
+ * read by non-interrupt code; this data structure is what's touched by the
+ * interrupt handler.  The other part of the queue state, the read offset, is
+ * kept in user space, not in hypervisor space, so it is in a separate data
+ * structure.
+ *
+ * The read offset (__packet_receive_read in the user part of the queue
+ * structure) points to the next packet to be read. When the read offset is
+ * equal to the write offset, the queue is empty; therefore the queue must
+ * contain one more slot than the required maximum queue size.
+ *
+ * Here's an example of all 3 state variables and what they mean.  All
+ * pointers move left to right.
+ *
+ * @code
+ *   I   I   V   V   V   V   I   I   I   I
+ *   0   1   2   3   4   5   6   7   8   9  10
+ *           ^       ^       ^               ^
+ *           |               |               |
+ *           |               |               __last_packet_plus_one
+ *           |               __buffer_write
+ *           __packet_receive_read
+ * @endcode
+ *
+ * This queue has 10 slots, and thus can hold 9 packets (_last_packet_plus_one
+ * = 10).  The read pointer is at 2, and the write pointer is at 6; thus,
+ * there are valid, unread packets in slots 2, 3, 4, and 5.  The remaining
+ * slots are invalid (do not contain a packet).
+ */
+typedef struct {
+  /** Byte offset of the next notify packet to be written: zero for the first
+   *  packet on the queue, sizeof (netio_pkt_t) for the second packet on the
+   *  queue, etc. */
+  volatile uint32_t __packet_write;
+
+  /** Offset of the packet after the last valid packet (i.e., when any
+   *  pointer is incremented to this value, it wraps back to zero). */
+  uint32_t __last_packet_plus_one;
+}
+__netio_packet_queue_t;
+
+
+/** A queue of buffers.
+ *
+ * This structure partially defines a queue of empty buffers which have been
+ * obtained via requests to the IPP.  (The elements of the queue are packet
+ * handles, which are transformed into a full netio_pkt_t when the buffer is
+ * retrieved.)  The queue as a whole is written to by an interrupt handler and
+ * read by non-interrupt code; this data structure is what's touched by the
+ * interrupt handler.  The other parts of the queue state, the read offset and
+ * requested write offset, are kept in user space, not in hypervisor space, so
+ * they are in a separate data structure.
+ *
+ * The read offset (__buffer_read in the user part of the queue structure)
+ * points to the next buffer to be read. When the read offset is equal to the
+ * write offset, the queue is empty; therefore the queue must contain one more
+ * slot than the required maximum queue size.
+ *
+ * The requested write offset (__buffer_requested_write in the user part of
+ * the queue structure) points to the slot which will hold the next buffer we
+ * request from the IPP, once we get around to sending such a request.  When
+ * the requested write offset is equal to the write offset, no requests for
+ * new buffers are outstanding; when the requested write offset is one greater
+ * than the read offset, no more requests may be sent.
+ *
+ * Note that, unlike the packet_queue, the buffer_queue places incoming
+ * buffers at decreasing addresses.  This makes the check for "is it time to
+ * wrap the buffer pointer" cheaper in the assembly code which receives new
+ * buffers, and means that the value which defines the queue size,
+ * __last_buffer, is different than in the packet queue.  Also, the offset
+ * used in the packet_queue is already scaled by the size of a packet; here we
+ * use unscaled slot indices for the offsets.  (These differences are
+ * historical, and in the future it's possible that the packet_queue will look
+ * more like this queue.)
+ *
+ * @code
+ * Here's an example of all 4 state variables and what they mean.  Remember:
+ * all pointers move right to left.
+ *
+ *   V   V   V   I   I   R   R   V   V   V
+ *   0   1   2   3   4   5   6   7   8   9
+ *           ^       ^       ^           ^
+ *           |       |       |           |
+ *           |       |       |           __last_buffer
+ *           |       |       __buffer_write
+ *           |       __buffer_requested_write
+ *           __buffer_read
+ * @endcode
+ *
+ * This queue has 10 slots, and thus can hold 9 buffers (_last_buffer = 9).
+ * The read pointer is at 2, and the write pointer is at 6; thus, there are
+ * valid, unread buffers in slots 2, 1, 0, 9, 8, and 7.  The requested write
+ * pointer is at 4; thus, requests have been made to the IPP for buffers which
+ * will be placed in slots 6 and 5 when they arrive.  Finally, the remaining
+ * slots are invalid (do not contain a buffer).
+ */
+typedef struct
+{
+  /** Ordinal number of the next buffer to be written: 0 for the first slot in
+   *  the queue, 1 for the second slot in the queue, etc. */
+  volatile uint32_t __buffer_write;
+
+  /** Ordinal number of the last buffer (i.e., when any pointer is decremented
+   *  below zero, it is reloaded with this value). */
+  uint32_t __last_buffer;
+}
+__netio_buffer_queue_t;
+
+
+/**
+ * An object for providing Ethernet packets to a process.
+ */
+typedef struct __netio_queue_impl_t
+{
+  /** The queue of packets waiting to be received. */
+  __netio_packet_queue_t __packet_receive_queue;
+  /** The intr bit mask that IDs this device. */
+  unsigned int __intr_id;
+  /** Offset to queues of empty buffers, one per size. */
+  uint32_t __buffer_queue[NETIO_NUM_SIZES];
+  /** The address of the first EPP tile, or -1 if no EPP. */
+  /* ISSUE: Actually this is always "0" or "~0". */
+  uint32_t __epp_location;
+  /** The queue ID that this queue represents. */
+  unsigned int __queue_id;
+  /** Number of acknowledgements received. */
+  volatile uint32_t __acks_received;
+  /** Last completion number received for packet_sendv. */
+  volatile uint32_t __last_completion_rcv;
+  /** Number of packets allowed to be outstanding. */
+  uint32_t __max_outstanding;
+  /** First VA available for packets. */
+  void* __va_0;
+  /** First VA in second range available for packets. */
+  void* __va_1;
+  /** Padding to align the "__packets" field to the size of a netio_pkt_t. */
+  uint32_t __padding[3];
+  /** The packets themselves. */
+  netio_pkt_t __packets[0];
+}
+netio_queue_impl_t;
+
+
+/**
+ * An object for managing the user end of a NetIO queue.
+ */
+typedef struct __netio_queue_user_impl_t
+{
+  /** The next incoming packet to be read. */
+  uint32_t __packet_receive_read;
+  /** The next empty buffers to be read, one index per size. */
+  uint8_t __buffer_read[NETIO_NUM_SIZES];
+  /** Where the empty buffer we next request from the IPP will go, one index
+   * per size. */
+  uint8_t __buffer_requested_write[NETIO_NUM_SIZES];
+  /** PCIe interface flag. */
+  uint8_t __pcie;
+  /** Number of packets left to be received before we send a credit update. */
+  uint32_t __receive_credit_remaining;
+  /** Value placed in __receive_credit_remaining when it reaches zero. */
+  uint32_t __receive_credit_interval;
+  /** First fast I/O routine index. */
+  uint32_t __fastio_index;
+  /** Number of acknowledgements expected. */
+  uint32_t __acks_outstanding;
+  /** Last completion number requested. */
+  uint32_t __last_completion_req;
+  /** File descriptor for driver. */
+  int __fd;
+}
+netio_queue_user_impl_t;
+
+
+#define NETIO_GROUP_CHUNK_SIZE   64   /**< Max # groups in one IPP request */
+#define NETIO_BUCKET_CHUNK_SIZE  64   /**< Max # buckets in one IPP request */
+
+
+/** Internal structure used to convey packet send information to the
+ * hypervisor.  FIXME: Actually, it's not used for that anymore, but
+ * netio_packet_send() still uses it internally.
+ */
+typedef struct
+{
+  uint16_t flags;              /**< Packet flags (__NETIO_SEND_FLG_xxx) */
+  uint16_t transfer_size;      /**< Size of packet */
+  uint32_t va;                 /**< VA of start of packet */
+  __netio_pkt_handle_t handle; /**< Packet handle */
+  uint32_t csum0;              /**< First checksum word */
+  uint32_t csum1;              /**< Second checksum word */
+}
+__netio_send_cmd_t;
+
+
+/** Flags used in two contexts:
+ *  - As the "flags" member in the __netio_send_cmd_t, above; used only
+ *    for netio_pkt_send_{prepare,commit}.
+ *  - As part of the flags passed to the various send packet fast I/O calls.
+ */
+
+/** Need acknowledgement on this packet.  Note that some code in the
+ *  normal send_pkt fast I/O handler assumes that this is equal to 1. */
+#define __NETIO_SEND_FLG_ACK    0x1
+
+/** Do checksum on this packet.  (Only used with the __netio_send_cmd_t;
+ *  normal packet sends use a special fast I/O index to denote checksumming,
+ *  and multi-segment sends test the checksum descriptor.) */
+#define __NETIO_SEND_FLG_CSUM   0x2
+
+/** Get a completion on this packet.  Only used with multi-segment sends.  */
+#define __NETIO_SEND_FLG_COMPLETION 0x4
+
+/** Position of the number-of-extra-segments value in the flags word.
+    Only used with multi-segment sends. */
+#define __NETIO_SEND_FLG_XSEG_SHIFT 3
+
+/** Width of the number-of-extra-segments value in the flags word. */
+#define __NETIO_SEND_FLG_XSEG_WIDTH 2
+
+#endif /* __DRV_XGBE_IMPL_H__ */
diff --git a/arch/tile/include/hv/drv_xgbe_intf.h b/arch/tile/include/hv/drv_xgbe_intf.h
new file mode 100644
index 000000000000..146e47d5334b
--- /dev/null
+++ b/arch/tile/include/hv/drv_xgbe_intf.h
@@ -0,0 +1,615 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/**
+ * @file drv_xgbe_intf.h
+ * Interface to the hypervisor XGBE driver.
+ */
+
+#ifndef __DRV_XGBE_INTF_H__
+#define __DRV_XGBE_INTF_H__
+
+/**
+ * An object for forwarding VAs and PAs to the hypervisor.
+ * @ingroup types
+ *
+ * This allows the supervisor to specify a number of areas of memory to
+ * store packet buffers.
+ */
+typedef struct
+{
+  /** The physical address of the memory. */
+  HV_PhysAddr pa;
+  /** Page table entry for the memory.  This is only used to derive the
+   *  memory's caching mode; the PA bits are ignored. */
+  HV_PTE pte;
+  /** The virtual address of the memory. */
+  HV_VirtAddr va;
+  /** Size (in bytes) of the memory area. */
+  int size;
+
+}
+netio_ipp_address_t;
+
+/** The various pread/pwrite offsets into the hypervisor-level driver.
+ * @ingroup types
+ */
+typedef enum
+{
+  /** Inform the Linux driver of the address of the NetIO arena memory.
+   *  This offset is actually only used to convey information from netio
+   *  to the Linux driver; it never makes it from there to the hypervisor.
+   *  Write-only; takes a uint32_t specifying the VA address. */
+  NETIO_FIXED_ADDR               = 0x5000000000000000ULL,
+
+  /** Inform the Linux driver of the size of the NetIO arena memory.
+   *  This offset is actually only used to convey information from netio
+   *  to the Linux driver; it never makes it from there to the hypervisor.
+   *  Write-only; takes a uint32_t specifying the VA size. */
+  NETIO_FIXED_SIZE               = 0x5100000000000000ULL,
+
+  /** Register current tile with IPP.  Write then read: write, takes a
+   *  netio_input_config_t, read returns a pointer to a netio_queue_impl_t. */
+  NETIO_IPP_INPUT_REGISTER_OFF   = 0x6000000000000000ULL,
+
+  /** Unregister current tile from IPP.  Write-only, takes a dummy argument. */
+  NETIO_IPP_INPUT_UNREGISTER_OFF = 0x6100000000000000ULL,
+
+  /** Start packets flowing.  Write-only, takes a dummy argument. */
+  NETIO_IPP_INPUT_INIT_OFF       = 0x6200000000000000ULL,
+
+  /** Stop packets flowing.  Write-only, takes a dummy argument. */
+  NETIO_IPP_INPUT_UNINIT_OFF     = 0x6300000000000000ULL,
+
+  /** Configure group (typically we group on VLAN).  Write-only: takes an
+   *  array of netio_group_t's, low 24 bits of the offset is the base group
+   *  number times the size of a netio_group_t. */
+  NETIO_IPP_INPUT_GROUP_CFG_OFF  = 0x6400000000000000ULL,
+
+  /** Configure bucket.  Write-only: takes an array of netio_bucket_t's, low
+   *  24 bits of the offset is the base bucket number times the size of a
+   *  netio_bucket_t. */
+  NETIO_IPP_INPUT_BUCKET_CFG_OFF = 0x6500000000000000ULL,
+
+  /** Get/set a parameter.  Read or write: read or write data is the parameter
+   *  value, low 32 bits of the offset is a __netio_getset_offset_t. */
+  NETIO_IPP_PARAM_OFF            = 0x6600000000000000ULL,
+
+  /** Get fast I/O index.  Read-only; returns a 4-byte base index value. */
+  NETIO_IPP_GET_FASTIO_OFF       = 0x6700000000000000ULL,
+
+  /** Configure hijack IP address.  Packets with this IPv4 dest address
+   *  go to bucket NETIO_NUM_BUCKETS - 1.  Write-only: takes an IP address
+   *  in some standard form.  FIXME: Define the form! */
+  NETIO_IPP_INPUT_HIJACK_CFG_OFF  = 0x6800000000000000ULL,
+
+  /**
+   * Offsets beyond this point are reserved for the supervisor (although that
+   * enforcement must be done by the supervisor driver itself).
+   */
+  NETIO_IPP_USER_MAX_OFF         = 0x6FFFFFFFFFFFFFFFULL,
+
+  /** Register I/O memory.  Write-only, takes a netio_ipp_address_t. */
+  NETIO_IPP_IOMEM_REGISTER_OFF   = 0x7000000000000000ULL,
+
+  /** Unregister I/O memory.  Write-only, takes a netio_ipp_address_t. */
+  NETIO_IPP_IOMEM_UNREGISTER_OFF = 0x7100000000000000ULL,
+
+  /* Offsets greater than 0x7FFFFFFF can't be used directly from Linux
+   * userspace code due to limitations in the pread/pwrite syscalls. */
+
+  /** Drain LIPP buffers. */
+  NETIO_IPP_DRAIN_OFF              = 0xFA00000000000000ULL,
+
+  /** Supply a netio_ipp_address_t to be used as shared memory for the
+   *  LEPP command queue. */
+  NETIO_EPP_SHM_OFF              = 0xFB00000000000000ULL,
+
+  /* 0xFC... is currently unused. */
+
+  /** Stop IPP/EPP tiles.  Write-only, takes a dummy argument.  */
+  NETIO_IPP_STOP_SHIM_OFF        = 0xFD00000000000000ULL,
+
+  /** Start IPP/EPP tiles.  Write-only, takes a dummy argument.  */
+  NETIO_IPP_START_SHIM_OFF       = 0xFE00000000000000ULL,
+
+  /** Supply packet arena.  Write-only, takes an array of
+    * netio_ipp_address_t values. */
+  NETIO_IPP_ADDRESS_OFF          = 0xFF00000000000000ULL,
+} netio_hv_offset_t;
+
+/** Extract the base offset from an offset */
+#define NETIO_BASE_OFFSET(off)    ((off) & 0xFF00000000000000ULL)
+/** Extract the local offset from an offset */
+#define NETIO_LOCAL_OFFSET(off)   ((off) & 0x00FFFFFFFFFFFFFFULL)
+
+
+/**
+ * Get/set offset.
+ */
+typedef union
+{
+  struct
+  {
+    uint64_t addr:48;        /**< Class-specific address */
+    unsigned int class:8;    /**< Class (e.g., NETIO_PARAM) */
+    unsigned int opcode:8;   /**< High 8 bits of NETIO_IPP_PARAM_OFF */
+  }
+  bits;                      /**< Bitfields */
+  uint64_t word;             /**< Aggregated value to use as the offset */
+}
+__netio_getset_offset_t;
+
+/**
+ * Fast I/O index offsets (must be contiguous).
+ */
+typedef enum
+{
+  NETIO_FASTIO_ALLOCATE         = 0, /**< Get empty packet buffer */
+  NETIO_FASTIO_FREE_BUFFER      = 1, /**< Give buffer back to IPP */
+  NETIO_FASTIO_RETURN_CREDITS   = 2, /**< Give credits to IPP */
+  NETIO_FASTIO_SEND_PKT_NOCK    = 3, /**< Send a packet, no checksum */
+  NETIO_FASTIO_SEND_PKT_CK      = 4, /**< Send a packet, with checksum */
+  NETIO_FASTIO_SEND_PKT_VEC     = 5, /**< Send a vector of packets */
+  NETIO_FASTIO_SENDV_PKT        = 6, /**< Sendv one packet */
+  NETIO_FASTIO_NUM_INDEX        = 7, /**< Total number of fast I/O indices */
+} netio_fastio_index_t;
+
+/** 3-word return type for Fast I/O call. */
+typedef struct
+{
+  int err;            /**< Error code. */
+  uint32_t val0;      /**< Value.  Meaning depends upon the specific call. */
+  uint32_t val1;      /**< Value.  Meaning depends upon the specific call. */
+} netio_fastio_rv3_t;
+
+/** 0-argument fast I/O call */
+int __netio_fastio0(uint32_t fastio_index);
+/** 1-argument fast I/O call */
+int __netio_fastio1(uint32_t fastio_index, uint32_t arg0);
+/** 3-argument fast I/O call, 2-word return value */
+netio_fastio_rv3_t __netio_fastio3_rv3(uint32_t fastio_index, uint32_t arg0,
+                                       uint32_t arg1, uint32_t arg2);
+/** 4-argument fast I/O call */
+int __netio_fastio4(uint32_t fastio_index, uint32_t arg0, uint32_t arg1,
+                    uint32_t arg2, uint32_t arg3);
+/** 6-argument fast I/O call */
+int __netio_fastio6(uint32_t fastio_index, uint32_t arg0, uint32_t arg1,
+                    uint32_t arg2, uint32_t arg3, uint32_t arg4, uint32_t arg5);
+/** 9-argument fast I/O call */
+int __netio_fastio9(uint32_t fastio_index, uint32_t arg0, uint32_t arg1,
+                    uint32_t arg2, uint32_t arg3, uint32_t arg4, uint32_t arg5,
+                    uint32_t arg6, uint32_t arg7, uint32_t arg8);
+
+/** Allocate an empty packet.
+ * @param fastio_index Fast I/O index.
+ * @param size Size of the packet to allocate.
+ */
+#define __netio_fastio_allocate(fastio_index, size) \
+  __netio_fastio1((fastio_index) + NETIO_FASTIO_ALLOCATE, size)
+
+/** Free a buffer.
+ * @param fastio_index Fast I/O index.
+ * @param handle Handle for the packet to free.
+ */
+#define __netio_fastio_free_buffer(fastio_index, handle) \
+  __netio_fastio1((fastio_index) + NETIO_FASTIO_FREE_BUFFER, handle)
+
+/** Increment our receive credits.
+ * @param fastio_index Fast I/O index.
+ * @param credits Number of credits to add.
+ */
+#define __netio_fastio_return_credits(fastio_index, credits) \
+  __netio_fastio1((fastio_index) + NETIO_FASTIO_RETURN_CREDITS, credits)
+
+/** Send packet, no checksum.
+ * @param fastio_index Fast I/O index.
+ * @param ackflag Nonzero if we want an ack.
+ * @param size Size of the packet.
+ * @param va Virtual address of start of packet.
+ * @param handle Packet handle.
+ */
+#define __netio_fastio_send_pkt_nock(fastio_index, ackflag, size, va, handle) \
+  __netio_fastio4((fastio_index) + NETIO_FASTIO_SEND_PKT_NOCK, ackflag, \
+                  size, va, handle)
+
+/** Send packet, calculate checksum.
+ * @param fastio_index Fast I/O index.
+ * @param ackflag Nonzero if we want an ack.
+ * @param size Size of the packet.
+ * @param va Virtual address of start of packet.
+ * @param handle Packet handle.
+ * @param csum0 Shim checksum header.
+ * @param csum1 Checksum seed.
+ */
+#define __netio_fastio_send_pkt_ck(fastio_index, ackflag, size, va, handle, \
+                                   csum0, csum1) \
+  __netio_fastio6((fastio_index) + NETIO_FASTIO_SEND_PKT_CK, ackflag, \
+                  size, va, handle, csum0, csum1)
+
+
+/** Format for the "csum0" argument to the __netio_fastio_send routines
+ * and LEPP.  Note that this is currently exactly identical to the
+ * ShimProtocolOffloadHeader.
+ */
+typedef union
+{
+  struct
+  {
+    unsigned int start_byte:7;       /**< The first byte to be checksummed */
+    unsigned int count:14;           /**< Number of bytes to be checksummed. */
+    unsigned int destination_byte:7; /**< The byte to write the checksum to. */
+    unsigned int reserved:4;         /**< Reserved. */
+  } bits;                            /**< Decomposed method of access. */
+  unsigned int word;                 /**< To send out the IDN. */
+} __netio_checksum_header_t;
+
+
+/** Sendv packet with 1 or 2 segments.
+ * @param fastio_index Fast I/O index.
+ * @param flags Ack/csum/notify flags in low 3 bits; number of segments minus
+ *        1 in next 2 bits; expected checksum in high 16 bits.
+ * @param confno Confirmation number to request, if notify flag set.
+ * @param csum0 Checksum descriptor; if zero, no checksum.
+ * @param va_F Virtual address of first segment.
+ * @param va_L Virtual address of last segment, if 2 segments.
+ * @param len_F_L Length of first segment in low 16 bits; length of last
+ *        segment, if 2 segments, in high 16 bits.
+ */
+#define __netio_fastio_sendv_pkt_1_2(fastio_index, flags, confno, csum0, \
+                                     va_F, va_L, len_F_L) \
+  __netio_fastio6((fastio_index) + NETIO_FASTIO_SENDV_PKT, flags, confno, \
+                  csum0, va_F, va_L, len_F_L)
+
+/** Send packet on PCIe interface.
+ * @param fastio_index Fast I/O index.
+ * @param flags Ack/csum/notify flags in low 3 bits.
+ * @param confno Confirmation number to request, if notify flag set.
+ * @param csum0 Checksum descriptor; Hard wired 0, not needed for PCIe.
+ * @param va_F Virtual address of the packet buffer.
+ * @param va_L Virtual address of last segment, if 2 segments. Hard wired 0.
+ * @param len_F_L Length of the packet buffer in low 16 bits.
+ */
+#define __netio_fastio_send_pcie_pkt(fastio_index, flags, confno, csum0, \
+                                     va_F, va_L, len_F_L) \
+  __netio_fastio6((fastio_index) + PCIE_FASTIO_SENDV_PKT, flags, confno, \
+                  csum0, va_F, va_L, len_F_L)
+
+/** Sendv packet with 3 or 4 segments.
+ * @param fastio_index Fast I/O index.
+ * @param flags Ack/csum/notify flags in low 3 bits; number of segments minus
+ *        1 in next 2 bits; expected checksum in high 16 bits.
+ * @param confno Confirmation number to request, if notify flag set.
+ * @param csum0 Checksum descriptor; if zero, no checksum.
+ * @param va_F Virtual address of first segment.
+ * @param va_L Virtual address of last segment (third segment if 3 segments,
+ *        fourth segment if 4 segments).
+ * @param len_F_L Length of first segment in low 16 bits; length of last
+ *        segment in high 16 bits.
+ * @param va_M0 Virtual address of "middle 0" segment; this segment is sent
+ *        second when there are three segments, and third if there are four.
+ * @param va_M1 Virtual address of "middle 1" segment; this segment is sent
+ *        second when there are four segments.
+ * @param len_M0_M1 Length of middle 0 segment in low 16 bits; length of middle
+ *        1 segment, if 4 segments, in high 16 bits.
+ */
+#define __netio_fastio_sendv_pkt_3_4(fastio_index, flags, confno, csum0, va_F, \
+                                     va_L, len_F_L, va_M0, va_M1, len_M0_M1) \
+  __netio_fastio9((fastio_index) + NETIO_FASTIO_SENDV_PKT, flags, confno, \
+                  csum0, va_F, va_L, len_F_L, va_M0, va_M1, len_M0_M1)
+
+/** Send vector of packets.
+ * @param fastio_index Fast I/O index.
+ * @param seqno Number of packets transmitted so far on this interface;
+ *        used to decide which packets should be acknowledged.
+ * @param nentries Number of entries in vector.
+ * @param va Virtual address of start of vector entry array.
+ * @return 3-word netio_fastio_rv3_t structure.  The structure's err member
+ *         is an error code, or zero if no error.  The val0 member is the
+ *         updated value of seqno; it has been incremented by 1 for each
+ *         packet sent.  That increment may be less than nentries if an
+ *         error occured, or if some of the entries in the vector contain
+ *         handles equal to NETIO_PKT_HANDLE_NONE.  The val1 member is the
+ *         updated value of nentries; it has been decremented by 1 for each
+ *         vector entry processed.  Again, that decrement may be less than
+ *         nentries (leaving the returned value positive) if an error
+ *         occurred.
+ */
+#define __netio_fastio_send_pkt_vec(fastio_index, seqno, nentries, va) \
+  __netio_fastio3_rv3((fastio_index) + NETIO_FASTIO_SEND_PKT_VEC, seqno, \
+                      nentries, va)
+
+
+/** An egress DMA command for LEPP. */
+typedef struct
+{
+  /** Is this a TSO transfer?
+   *
+   * NOTE: This field is always 0, to distinguish it from
+   * lepp_tso_cmd_t.  It must come first!
+   */
+  uint8_t tso               : 1;
+
+  /** Unused padding bits. */
+  uint8_t _unused           : 3;
+
+  /** Should this packet be sent directly from caches instead of DRAM,
+   * using hash-for-home to locate the packet data?
+   */
+  uint8_t hash_for_home     : 1;
+
+  /** Should we compute a checksum? */
+  uint8_t compute_checksum  : 1;
+
+  /** Is this the final buffer for this packet?
+   *
+   * A single packet can be split over several input buffers (a "gather"
+   * operation).  This flag indicates that this is the last buffer
+   * in a packet.
+   */
+  uint8_t end_of_packet     : 1;
+
+  /** Should LEPP advance 'comp_busy' when this DMA is fully finished? */
+  uint8_t send_completion   : 1;
+
+  /** High bits of Client Physical Address of the start of the buffer
+   *  to be egressed.
+   *
+   *  NOTE: Only 6 bits are actually needed here, as CPAs are
+   *  currently 38 bits.  So two bits could be scavenged from this.
+   */
+  uint8_t cpa_hi;
+
+  /** The number of bytes to be egressed. */
+  uint16_t length;
+
+  /** Low 32 bits of Client Physical Address of the start of the buffer
+   *  to be egressed.
+   */
+  uint32_t cpa_lo;
+
+  /** Checksum information (only used if 'compute_checksum'). */
+  __netio_checksum_header_t checksum_data;
+
+} lepp_cmd_t;
+
+
+/** A chunk of physical memory for a TSO egress. */
+typedef struct
+{
+  /** The low bits of the CPA. */
+  uint32_t cpa_lo;
+  /** The high bits of the CPA. */
+  uint16_t cpa_hi		: 15;
+  /** Should this packet be sent directly from caches instead of DRAM,
+   *  using hash-for-home to locate the packet data?
+   */
+  uint16_t hash_for_home	: 1;
+  /** The length in bytes. */
+  uint16_t length;
+} lepp_frag_t;
+
+
+/** An LEPP command that handles TSO. */
+typedef struct
+{
+  /** Is this a TSO transfer?
+   *
+   *  NOTE: This field is always 1, to distinguish it from
+   *  lepp_cmd_t.  It must come first!
+   */
+  uint8_t tso             : 1;
+
+  /** Unused padding bits. */
+  uint8_t _unused         : 7;
+
+  /** Size of the header[] array in bytes.  It must be in the range
+   *  [40, 127], which are the smallest header for a TCP packet over
+   *  Ethernet and the maximum possible prepend size supported by
+   *  hardware, respectively.  Note that the array storage must be
+   *  padded out to a multiple of four bytes so that the following
+   *  LEPP command is aligned properly.
+   */
+  uint8_t header_size;
+
+  /** Byte offset of the IP header in header[]. */
+  uint8_t ip_offset;
+
+  /** Byte offset of the TCP header in header[]. */
+  uint8_t tcp_offset;
+
+  /** The number of bytes to use for the payload of each packet,
+   *  except of course the last one, which may not have enough bytes.
+   *  This means that each Ethernet packet except the last will have a
+   *  size of header_size + payload_size.
+   */
+  uint16_t payload_size;
+
+  /** The length of the 'frags' array that follows this struct. */
+  uint16_t num_frags;
+
+  /** The actual frags. */
+  lepp_frag_t frags[0 /* Variable-sized; num_frags entries. */];
+
+  /*
+   * The packet header template logically follows frags[],
+   * but you can't declare that in C.
+   *
+   * uint32_t header[header_size_in_words_rounded_up];
+   */
+
+} lepp_tso_cmd_t;
+
+
+/** An LEPP completion ring entry. */
+typedef void* lepp_comp_t;
+
+
+/** Maximum number of frags for one TSO command.  This is adapted from
+ *  linux's "MAX_SKB_FRAGS", and presumably over-estimates by one, for
+ *  our page size of exactly 65536.  We add one for a "body" fragment.
+ */
+#define LEPP_MAX_FRAGS (65536 / HV_PAGE_SIZE_SMALL + 2 + 1)
+
+/** Total number of bytes needed for an lepp_tso_cmd_t. */
+#define LEPP_TSO_CMD_SIZE(num_frags, header_size) \
+  (sizeof(lepp_tso_cmd_t) + \
+   (num_frags) * sizeof(lepp_frag_t) + \
+   (((header_size) + 3) & -4))
+
+/** The size of the lepp "cmd" queue. */
+#define LEPP_CMD_QUEUE_BYTES \
+ (((CHIP_L2_CACHE_SIZE() - 2 * CHIP_L2_LINE_SIZE()) / \
+  (sizeof(lepp_cmd_t) + sizeof(lepp_comp_t))) * sizeof(lepp_cmd_t))
+
+/** The largest possible command that can go in lepp_queue_t::cmds[]. */
+#define LEPP_MAX_CMD_SIZE LEPP_TSO_CMD_SIZE(LEPP_MAX_FRAGS, 128)
+
+/** The largest possible value of lepp_queue_t::cmd_{head, tail} (inclusive).
+ */
+#define LEPP_CMD_LIMIT \
+  (LEPP_CMD_QUEUE_BYTES - LEPP_MAX_CMD_SIZE)
+
+/** The maximum number of completions in an LEPP queue. */
+#define LEPP_COMP_QUEUE_SIZE \
+  ((LEPP_CMD_LIMIT + sizeof(lepp_cmd_t) - 1) / sizeof(lepp_cmd_t))
+
+/** Increment an index modulo the queue size. */
+#define LEPP_QINC(var) \
+  (var = __insn_mnz(var - (LEPP_COMP_QUEUE_SIZE - 1), var + 1))
+
+/** A queue used to convey egress commands from the client to LEPP. */
+typedef struct
+{
+  /** Index of first completion not yet processed by user code.
+   *  If this is equal to comp_busy, there are no such completions.
+   *
+   *  NOTE: This is only read/written by the user.
+   */
+  unsigned int comp_head;
+
+  /** Index of first completion record not yet completed.
+   *  If this is equal to comp_tail, there are no such completions.
+   *  This index gets advanced (modulo LEPP_QUEUE_SIZE) whenever
+   *  a command with the 'completion' bit set is finished.
+   *
+   *  NOTE: This is only written by LEPP, only read by the user.
+   */
+  volatile unsigned int comp_busy;
+
+  /** Index of the first empty slot in the completion ring.
+   *  Entries from this up to but not including comp_head (in ring order)
+   *  can be filled in with completion data.
+   *
+   *  NOTE: This is only read/written by the user.
+   */
+  unsigned int comp_tail;
+
+  /** Byte index of first command enqueued for LEPP but not yet processed.
+   *
+   *  This is always divisible by sizeof(void*) and always <= LEPP_CMD_LIMIT.
+   *
+   *  NOTE: LEPP advances this counter as soon as it no longer needs
+   *  the cmds[] storage for this entry, but the transfer is not actually
+   *  complete (i.e. the buffer pointed to by the command is no longer
+   *  needed) until comp_busy advances.
+   *
+   *  If this is equal to cmd_tail, the ring is empty.
+   *
+   *  NOTE: This is only written by LEPP, only read by the user.
+   */
+  volatile unsigned int cmd_head;
+
+  /** Byte index of first empty slot in the command ring.  This field can
+   *  be incremented up to but not equal to cmd_head (because that would
+   *  mean the ring is empty).
+   *
+   *  This is always divisible by sizeof(void*) and always <= LEPP_CMD_LIMIT.
+   *
+   *  NOTE: This is read/written by the user, only read by LEPP.
+   */
+  volatile unsigned int cmd_tail;
+
+  /** A ring of variable-sized egress DMA commands.
+   *
+   *  NOTE: Only written by the user, only read by LEPP.
+   */
+  char cmds[LEPP_CMD_QUEUE_BYTES]
+    __attribute__((aligned(CHIP_L2_LINE_SIZE())));
+
+  /** A ring of user completion data.
+   *  NOTE: Only read/written by the user.
+   */
+  lepp_comp_t comps[LEPP_COMP_QUEUE_SIZE]
+    __attribute__((aligned(CHIP_L2_LINE_SIZE())));
+} lepp_queue_t;
+
+
+/** An internal helper function for determining the number of entries
+ *  available in a ring buffer, given that there is one sentinel.
+ */
+static inline unsigned int
+_lepp_num_free_slots(unsigned int head, unsigned int tail)
+{
+  /*
+   * One entry is reserved for use as a sentinel, to distinguish
+   * "empty" from "full".  So we compute
+   * (head - tail - 1) % LEPP_QUEUE_SIZE, but without using a slow % operation.
+   */
+  return (head - tail - 1) + ((head <= tail) ? LEPP_COMP_QUEUE_SIZE : 0);
+}
+
+
+/** Returns how many new comp entries can be enqueued. */
+static inline unsigned int
+lepp_num_free_comp_slots(const lepp_queue_t* q)
+{
+  return _lepp_num_free_slots(q->comp_head, q->comp_tail);
+}
+
+static inline int
+lepp_qsub(int v1, int v2)
+{
+  int delta = v1 - v2;
+  return delta + ((delta >> 31) & LEPP_COMP_QUEUE_SIZE);
+}
+
+
+/** FIXME: Check this from linux, via a new "pwrite()" call. */
+#define LIPP_VERSION 1
+
+
+/** We use exactly two bytes of alignment padding. */
+#define LIPP_PACKET_PADDING 2
+
+/** The minimum size of a "small" buffer (including the padding). */
+#define LIPP_SMALL_PACKET_SIZE 128
+
+/*
+ * NOTE: The following two values should total to less than around
+ * 13582, to keep the total size used for "lipp_state_t" below 64K.
+ */
+
+/** The maximum number of "small" buffers.
+ *  This is enough for 53 network cpus with 128 credits.  Note that
+ *  if these are exhausted, we will fall back to using large buffers.
+ */
+#define LIPP_SMALL_BUFFERS 6785
+
+/** The maximum number of "large" buffers.
+ *  This is enough for 53 network cpus with 128 credits.
+ */
+#define LIPP_LARGE_BUFFERS 6785
+
+#endif /* __DRV_XGBE_INTF_H__ */
diff --git a/arch/tile/include/hv/netio_errors.h b/arch/tile/include/hv/netio_errors.h
new file mode 100644
index 000000000000..e1591bff61b5
--- /dev/null
+++ b/arch/tile/include/hv/netio_errors.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/**
+ * Error codes returned from NetIO routines.
+ */
+
+#ifndef __NETIO_ERRORS_H__
+#define __NETIO_ERRORS_H__
+
+/**
+ * @addtogroup error
+ *
+ * @brief The error codes returned by NetIO functions.
+ *
+ * NetIO functions return 0 (defined as ::NETIO_NO_ERROR) on success, and
+ * a negative value if an error occurs.
+ *
+ * In cases where a NetIO function failed due to a error reported by
+ * system libraries, the error code will be the negation of the
+ * system errno at the time of failure.  The @ref netio_strerror()
+ * function will deliver error strings for both NetIO and system error
+ * codes.
+ *
+ * @{
+ */
+
+/** The set of all NetIO errors. */
+typedef enum
+{
+  /** Operation successfully completed. */
+  NETIO_NO_ERROR        = 0,
+
+  /** A packet was successfully retrieved from an input queue. */
+  NETIO_PKT             = 0,
+
+  /** Largest NetIO error number. */
+  NETIO_ERR_MAX         = -701,
+
+  /** The tile is not registered with the IPP. */
+  NETIO_NOT_REGISTERED  = -701,
+
+  /** No packet was available to retrieve from the input queue. */
+  NETIO_NOPKT           = -702,
+
+  /** The requested function is not implemented. */
+  NETIO_NOT_IMPLEMENTED = -703,
+
+  /** On a registration operation, the target queue already has the maximum
+   *  number of tiles registered for it, and no more may be added.  On a
+   *  packet send operation, the output queue is full and nothing more can
+   *  be queued until some of the queued packets are actually transmitted. */
+  NETIO_QUEUE_FULL      = -704,
+
+  /** The calling process or thread is not bound to exactly one CPU. */
+  NETIO_BAD_AFFINITY    = -705,
+
+  /** Cannot allocate memory on requested controllers. */
+  NETIO_CANNOT_HOME     = -706,
+
+  /** On a registration operation, the IPP specified is not configured
+   *  to support the options requested; for instance, the application
+   *  wants a specific type of tagged headers which the configured IPP
+   *  doesn't support.  Or, the supplied configuration information is
+   *  not self-consistent, or is out of range; for instance, specifying
+   *  both NETIO_RECV and NETIO_NO_RECV, or asking for more than
+   *  NETIO_MAX_SEND_BUFFERS to be preallocated.  On a VLAN or bucket
+   *  configure operation, the number of items, or the base item, was
+   *  out of range.
+   */
+  NETIO_BAD_CONFIG      = -707,
+
+  /** Too many tiles have registered to transmit packets. */
+  NETIO_TOOMANY_XMIT    = -708,
+
+  /** Packet transmission was attempted on a queue which was registered
+      with transmit disabled. */
+  NETIO_UNREG_XMIT      = -709,
+
+  /** This tile is already registered with the IPP. */
+  NETIO_ALREADY_REGISTERED = -710,
+
+  /** The Ethernet link is down. The application should try again later. */
+  NETIO_LINK_DOWN       = -711,
+
+  /** An invalid memory buffer has been specified.  This may be an unmapped
+   * virtual address, or one which does not meet alignment requirements.
+   * For netio_input_register(), this error may be returned when multiple
+   * processes specify different memory regions to be used for NetIO
+   * buffers.  That can happen if these processes specify explicit memory
+   * regions with the ::NETIO_FIXED_BUFFER_VA flag, or if tmc_cmem_init()
+   * has not been called by a common ancestor of the processes.
+   */
+  NETIO_FAULT           = -712,
+
+  /** Cannot combine user-managed shared memory and cache coherence. */
+  NETIO_BAD_CACHE_CONFIG = -713,
+
+  /** Smallest NetIO error number. */
+  NETIO_ERR_MIN         = -713,
+
+#ifndef __DOXYGEN__
+  /** Used internally to mean that no response is needed; never returned to
+   *  an application. */
+  NETIO_NO_RESPONSE     = 1
+#endif
+} netio_error_t;
+
+/** @} */
+
+#endif /* __NETIO_ERRORS_H__ */
diff --git a/arch/tile/include/hv/netio_intf.h b/arch/tile/include/hv/netio_intf.h
new file mode 100644
index 000000000000..8d20972aba2c
--- /dev/null
+++ b/arch/tile/include/hv/netio_intf.h
@@ -0,0 +1,2975 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/**
+ * NetIO interface structures and macros.
+ */
+
+#ifndef __NETIO_INTF_H__
+#define __NETIO_INTF_H__
+
+#include <hv/netio_errors.h>
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <stdint.h>
+#endif
+
+#if !defined(__HV__) && !defined(__BOGUX__) && !defined(__KERNEL__)
+#include <assert.h>
+#define netio_assert assert  /**< Enable assertions from macros */
+#else
+#define netio_assert(...) ((void)(0))  /**< Disable assertions from macros */
+#endif
+
+/*
+ * If none of these symbols are defined, we're building libnetio in an
+ * environment where we have pthreads, so we'll enable locking.
+ */
+#if !defined(__HV__) && !defined(__BOGUX__) && !defined(__KERNEL__) && \
+    !defined(__NEWLIB__)
+#define _NETIO_PTHREAD       /**< Include a mutex in netio_queue_t below */
+
+/*
+ * If NETIO_UNLOCKED is defined, we don't do use per-cpu locks on
+ * per-packet NetIO operations.  We still do pthread locking on things
+ * like netio_input_register, though.  This is used for building
+ * libnetio_unlocked.
+ */
+#ifndef NETIO_UNLOCKED
+
+/* Avoid PLT overhead by using our own inlined per-cpu lock. */
+#include <sched.h>
+typedef int _netio_percpu_mutex_t;
+
+static __inline int
+_netio_percpu_mutex_init(_netio_percpu_mutex_t* lock)
+{
+  *lock = 0;
+  return 0;
+}
+
+static __inline int
+_netio_percpu_mutex_lock(_netio_percpu_mutex_t* lock)
+{
+  while (__builtin_expect(__insn_tns(lock), 0))
+    sched_yield();
+  return 0;
+}
+
+static __inline int
+_netio_percpu_mutex_unlock(_netio_percpu_mutex_t* lock)
+{
+  *lock = 0;
+  return 0;
+}
+
+#else /* NETIO_UNLOCKED */
+
+/* Don't do any locking for per-packet NetIO operations. */
+typedef int _netio_percpu_mutex_t;
+#define _netio_percpu_mutex_init(L)
+#define _netio_percpu_mutex_lock(L)
+#define _netio_percpu_mutex_unlock(L)
+
+#endif /* NETIO_UNLOCKED */
+#endif /* !__HV__, !__BOGUX, !__KERNEL__, !__NEWLIB__ */
+
+/** How many tiles can register for a given queue.
+ *  @ingroup setup */
+#define NETIO_MAX_TILES_PER_QUEUE  64
+
+
+/** Largest permissible queue identifier.
+ *  @ingroup setup  */
+#define NETIO_MAX_QUEUE_ID        255
+
+
+#ifndef __DOXYGEN__
+
+/* Metadata packet checksum/ethertype flags. */
+
+/** The L4 checksum has not been calculated. */
+#define _NETIO_PKT_NO_L4_CSUM_SHIFT           0
+#define _NETIO_PKT_NO_L4_CSUM_RMASK           1
+#define _NETIO_PKT_NO_L4_CSUM_MASK \
+         (_NETIO_PKT_NO_L4_CSUM_RMASK << _NETIO_PKT_NO_L4_CSUM_SHIFT)
+
+/** The L3 checksum has not been calculated. */
+#define _NETIO_PKT_NO_L3_CSUM_SHIFT           1
+#define _NETIO_PKT_NO_L3_CSUM_RMASK           1
+#define _NETIO_PKT_NO_L3_CSUM_MASK \
+         (_NETIO_PKT_NO_L3_CSUM_RMASK << _NETIO_PKT_NO_L3_CSUM_SHIFT)
+
+/** The L3 checksum is incorrect (or perhaps has not been calculated). */
+#define _NETIO_PKT_BAD_L3_CSUM_SHIFT          2
+#define _NETIO_PKT_BAD_L3_CSUM_RMASK          1
+#define _NETIO_PKT_BAD_L3_CSUM_MASK \
+         (_NETIO_PKT_BAD_L3_CSUM_RMASK << _NETIO_PKT_BAD_L3_CSUM_SHIFT)
+
+/** The Ethernet packet type is unrecognized. */
+#define _NETIO_PKT_TYPE_UNRECOGNIZED_SHIFT    3
+#define _NETIO_PKT_TYPE_UNRECOGNIZED_RMASK    1
+#define _NETIO_PKT_TYPE_UNRECOGNIZED_MASK \
+         (_NETIO_PKT_TYPE_UNRECOGNIZED_RMASK << \
+          _NETIO_PKT_TYPE_UNRECOGNIZED_SHIFT)
+
+/* Metadata packet type flags. */
+
+/** Where the packet type bits are; this field is the index into
+ *  _netio_pkt_info. */
+#define _NETIO_PKT_TYPE_SHIFT        4
+#define _NETIO_PKT_TYPE_RMASK        0x3F
+
+/** How many VLAN tags the packet has, and, if we have two, which one we
+ *  actually grouped on.  A VLAN within a proprietary (Marvell or Broadcom)
+ *  tag is counted here. */
+#define _NETIO_PKT_VLAN_SHIFT        4
+#define _NETIO_PKT_VLAN_RMASK        0x3
+#define _NETIO_PKT_VLAN_MASK \
+         (_NETIO_PKT_VLAN_RMASK << _NETIO_PKT_VLAN_SHIFT)
+#define _NETIO_PKT_VLAN_NONE         0   /* No VLAN tag. */
+#define _NETIO_PKT_VLAN_ONE          1   /* One VLAN tag. */
+#define _NETIO_PKT_VLAN_TWO_OUTER    2   /* Two VLAN tags, outer one used. */
+#define _NETIO_PKT_VLAN_TWO_INNER    3   /* Two VLAN tags, inner one used. */
+
+/** Which proprietary tags the packet has. */
+#define _NETIO_PKT_TAG_SHIFT         6
+#define _NETIO_PKT_TAG_RMASK         0x3
+#define _NETIO_PKT_TAG_MASK \
+          (_NETIO_PKT_TAG_RMASK << _NETIO_PKT_TAG_SHIFT)
+#define _NETIO_PKT_TAG_NONE          0   /* No proprietary tags. */
+#define _NETIO_PKT_TAG_MRVL          1   /* Marvell HyperG.Stack tags. */
+#define _NETIO_PKT_TAG_MRVL_EXT      2   /* HyperG.Stack extended tags. */
+#define _NETIO_PKT_TAG_BRCM          3   /* Broadcom HiGig tags. */
+
+/** Whether a packet has an LLC + SNAP header. */
+#define _NETIO_PKT_SNAP_SHIFT        8
+#define _NETIO_PKT_SNAP_RMASK        0x1
+#define _NETIO_PKT_SNAP_MASK \
+          (_NETIO_PKT_SNAP_RMASK << _NETIO_PKT_SNAP_SHIFT)
+
+/* NOTE: Bits 9 and 10 are unused. */
+
+/** Length of any custom data before the L2 header, in words. */
+#define _NETIO_PKT_CUSTOM_LEN_SHIFT  11
+#define _NETIO_PKT_CUSTOM_LEN_RMASK  0x1F
+#define _NETIO_PKT_CUSTOM_LEN_MASK \
+          (_NETIO_PKT_CUSTOM_LEN_RMASK << _NETIO_PKT_CUSTOM_LEN_SHIFT)
+
+/** The L4 checksum is incorrect (or perhaps has not been calculated). */
+#define _NETIO_PKT_BAD_L4_CSUM_SHIFT 16
+#define _NETIO_PKT_BAD_L4_CSUM_RMASK 0x1
+#define _NETIO_PKT_BAD_L4_CSUM_MASK \
+          (_NETIO_PKT_BAD_L4_CSUM_RMASK << _NETIO_PKT_BAD_L4_CSUM_SHIFT)
+
+/** Length of the L2 header, in words. */
+#define _NETIO_PKT_L2_LEN_SHIFT  17
+#define _NETIO_PKT_L2_LEN_RMASK  0x1F
+#define _NETIO_PKT_L2_LEN_MASK \
+          (_NETIO_PKT_L2_LEN_RMASK << _NETIO_PKT_L2_LEN_SHIFT)
+
+
+/* Flags in minimal packet metadata. */
+
+/** We need an eDMA checksum on this packet. */
+#define _NETIO_PKT_NEED_EDMA_CSUM_SHIFT            0
+#define _NETIO_PKT_NEED_EDMA_CSUM_RMASK            1
+#define _NETIO_PKT_NEED_EDMA_CSUM_MASK \
+         (_NETIO_PKT_NEED_EDMA_CSUM_RMASK << _NETIO_PKT_NEED_EDMA_CSUM_SHIFT)
+
+/* Data within the packet information table. */
+
+/* Note that, for efficiency, code which uses these fields assumes that none
+ * of the shift values below are zero.  See uses below for an explanation. */
+
+/** Offset within the L2 header of the innermost ethertype (in halfwords). */
+#define _NETIO_PKT_INFO_ETYPE_SHIFT       6
+#define _NETIO_PKT_INFO_ETYPE_RMASK    0x1F
+
+/** Offset within the L2 header of the VLAN tag (in halfwords). */
+#define _NETIO_PKT_INFO_VLAN_SHIFT       11
+#define _NETIO_PKT_INFO_VLAN_RMASK     0x1F
+
+#endif
+
+
+/** The size of a memory buffer representing a small packet.
+ *  @ingroup egress */
+#define SMALL_PACKET_SIZE 256
+
+/** The size of a memory buffer representing a large packet.
+ *  @ingroup egress */
+#define LARGE_PACKET_SIZE 2048
+
+/** The size of a memory buffer representing a jumbo packet.
+ *  @ingroup egress */
+#define JUMBO_PACKET_SIZE (12 * 1024)
+
+
+/* Common ethertypes.
+ * @ingroup ingress */
+/** @{ */
+/** The ethertype of IPv4. */
+#define ETHERTYPE_IPv4 (0x0800)
+/** The ethertype of ARP. */
+#define ETHERTYPE_ARP (0x0806)
+/** The ethertype of VLANs. */
+#define ETHERTYPE_VLAN (0x8100)
+/** The ethertype of a Q-in-Q header. */
+#define ETHERTYPE_Q_IN_Q (0x9100)
+/** The ethertype of IPv6. */
+#define ETHERTYPE_IPv6 (0x86DD)
+/** The ethertype of MPLS. */
+#define ETHERTYPE_MPLS (0x8847)
+/** @} */
+
+
+/** The possible return values of NETIO_PKT_STATUS.
+ * @ingroup ingress
+ */
+typedef enum
+{
+  /** No problems were detected with this packet. */
+  NETIO_PKT_STATUS_OK,
+  /** The packet is undersized; this is expected behavior if the packet's
+    * ethertype is unrecognized, but otherwise the packet is likely corrupt. */
+  NETIO_PKT_STATUS_UNDERSIZE,
+  /** The packet is oversized and some trailing bytes have been discarded.
+      This is expected behavior for short packets, since it's impossible to
+      precisely determine the amount of padding which may have been added to
+      them to make them meet the minimum Ethernet packet size. */
+  NETIO_PKT_STATUS_OVERSIZE,
+  /** The packet was judged to be corrupt by hardware (for instance, it had
+      a bad CRC, or part of it was discarded due to lack of buffer space in
+      the I/O shim) and should be discarded. */
+  NETIO_PKT_STATUS_BAD
+} netio_pkt_status_t;
+
+
+/** Log2 of how many buckets we have. */
+#define NETIO_LOG2_NUM_BUCKETS (10)
+
+/** How many buckets we have.
+ * @ingroup ingress */
+#define NETIO_NUM_BUCKETS (1 << NETIO_LOG2_NUM_BUCKETS)
+
+
+/**
+ * @brief A group-to-bucket identifier.
+ *
+ * @ingroup setup
+ *
+ * This tells us what to do with a given group.
+ */
+typedef union {
+  /** The header broken down into bits. */
+  struct {
+    /** Whether we should balance on L4, if available */
+    unsigned int __balance_on_l4:1;
+    /** Whether we should balance on L3, if available */
+    unsigned int __balance_on_l3:1;
+    /** Whether we should balance on L2, if available */
+    unsigned int __balance_on_l2:1;
+    /** Reserved for future use */
+    unsigned int __reserved:1;
+    /** The base bucket to use to send traffic */
+    unsigned int __bucket_base:NETIO_LOG2_NUM_BUCKETS;
+    /** The mask to apply to the balancing value. This must be one less
+     * than a power of two, e.g. 0x3 or 0xFF.
+     */
+    unsigned int __bucket_mask:NETIO_LOG2_NUM_BUCKETS;
+    /** Pad to 32 bits */
+    unsigned int __padding:(32 - 4 - 2 * NETIO_LOG2_NUM_BUCKETS);
+  } bits;
+  /** To send out the IDN. */
+  unsigned int word;
+}
+netio_group_t;
+
+
+/**
+ * @brief A VLAN-to-bucket identifier.
+ *
+ * @ingroup setup
+ *
+ * This tells us what to do with a given VLAN.
+ */
+typedef netio_group_t netio_vlan_t;
+
+
+/**
+ * A bucket-to-queue mapping.
+ * @ingroup setup
+ */
+typedef unsigned char netio_bucket_t;
+
+
+/**
+ * A packet size can always fit in a netio_size_t.
+ * @ingroup setup
+ */
+typedef unsigned int netio_size_t;
+
+
+/**
+ * @brief Ethernet standard (ingress) packet metadata.
+ *
+ * @ingroup ingress
+ *
+ * This is additional data associated with each packet.
+ * This structure is opaque and accessed through the @ref ingress.
+ *
+ * Also, the buffer population operation currently assumes that standard
+ * metadata is at least as large as minimal metadata, and will need to be
+ * modified if that is no longer the case.
+ */
+typedef struct
+{
+#ifdef __DOXYGEN__
+  /** This structure is opaque. */
+  unsigned char opaque[24];
+#else
+  /** The overall ordinal of the packet */
+  unsigned int __packet_ordinal;
+  /** The ordinal of the packet within the group */
+  unsigned int __group_ordinal;
+  /** The best flow hash IPP could compute. */
+  unsigned int __flow_hash;
+  /** Flags pertaining to checksum calculation, packet type, etc. */
+  unsigned int __flags;
+  /** The first word of "user data". */
+  unsigned int __user_data_0;
+  /** The second word of "user data". */
+  unsigned int __user_data_1;
+#endif
+}
+netio_pkt_metadata_t;
+
+
+/** To ensure that the L3 header is aligned mod 4, the L2 header should be
+ * aligned mod 4 plus 2, since every supported L2 header is 4n + 2 bytes
+ * long.  The standard way to do this is to simply add 2 bytes of padding
+ * before the L2 header.
+ */
+#define NETIO_PACKET_PADDING 2
+
+
+
+/**
+ * @brief Ethernet minimal (egress) packet metadata.
+ *
+ * @ingroup egress
+ *
+ * This structure represents information about packets which have
+ * been processed by @ref netio_populate_buffer() or
+ * @ref netio_populate_prepend_buffer().  This structure is opaque
+ * and accessed through the @ref egress.
+ *
+ * @internal This structure is actually copied into the memory used by
+ * standard metadata, which is assumed to be large enough.
+ */
+typedef struct
+{
+#ifdef __DOXYGEN__
+  /** This structure is opaque. */
+  unsigned char opaque[14];
+#else
+  /** The offset of the L2 header from the start of the packet data. */
+  unsigned short l2_offset;
+  /** The offset of the L3 header from the start of the packet data. */
+  unsigned short l3_offset;
+  /** Where to write the checksum. */
+  unsigned char csum_location;
+  /** Where to start checksumming from. */
+  unsigned char csum_start;
+  /** Flags pertaining to checksum calculation etc. */
+  unsigned short flags;
+  /** The L2 length of the packet. */
+  unsigned short l2_length;
+  /** The checksum with which to seed the checksum generator. */
+  unsigned short csum_seed;
+  /** How much to checksum. */
+  unsigned short csum_length;
+#endif
+}
+netio_pkt_minimal_metadata_t;
+
+
+#ifndef __DOXYGEN__
+
+/**
+ * @brief An I/O notification header.
+ *
+ * This is the first word of data received from an I/O shim in a notification
+ * packet. It contains framing and status information.
+ */
+typedef union
+{
+  unsigned int word; /**< The whole word. */
+  /** The various fields. */
+  struct
+  {
+    unsigned int __channel:7;    /**< Resource channel. */
+    unsigned int __type:4;       /**< Type. */
+    unsigned int __ack:1;        /**< Whether an acknowledgement is needed. */
+    unsigned int __reserved:1;   /**< Reserved. */
+    unsigned int __protocol:1;   /**< A protocol-specific word is added. */
+    unsigned int __status:2;     /**< Status of the transfer. */
+    unsigned int __framing:2;    /**< Framing of the transfer. */
+    unsigned int __transfer_size:14; /**< Transfer size in bytes (total). */
+  } bits;
+}
+__netio_pkt_notif_t;
+
+
+/**
+ * Returns the base address of the packet.
+ */
+#define _NETIO_PKT_HANDLE_BASE(p) \
+  ((unsigned char*)((p).word & 0xFFFFFFC0))
+
+/**
+ * Returns the base address of the packet.
+ */
+#define _NETIO_PKT_BASE(p) \
+  _NETIO_PKT_HANDLE_BASE(p->__packet)
+
+/**
+ * @brief An I/O notification packet (second word)
+ *
+ * This is the second word of data received from an I/O shim in a notification
+ * packet.  This is the virtual address of the packet buffer, plus some flag
+ * bits.  (The virtual address of the packet is always 256-byte aligned so we
+ * have room for 8 bits' worth of flags in the low 8 bits.)
+ *
+ * @internal
+ * NOTE: The low two bits must contain "__queue", so the "packet size"
+ * (SIZE_SMALL, SIZE_LARGE, or SIZE_JUMBO) can be determined quickly.
+ *
+ * If __addr or __offset are moved, _NETIO_PKT_BASE
+ * (defined right below this) must be changed.
+ */
+typedef union
+{
+  unsigned int word; /**< The whole word. */
+  /** The various fields. */
+  struct
+  {
+    /** Which queue the packet will be returned to once it is sent back to
+        the IPP.  This is one of the SIZE_xxx values. */
+    unsigned int __queue:2;
+
+    /** The IPP handle of the sending IPP. */
+    unsigned int __ipp_handle:2;
+
+    /** Reserved for future use. */
+    unsigned int __reserved:1;
+
+    /** If 1, this packet has minimal (egress) metadata; otherwise, it
+        has standard (ingress) metadata. */
+    unsigned int __minimal:1;
+
+    /** Offset of the metadata within the packet.  This value is multiplied
+     *  by 64 and added to the base packet address to get the metadata
+     *  address.  Note that this field is aligned within the word such that
+     *  you can easily extract the metadata address with a 26-bit mask. */
+    unsigned int __offset:2;
+
+    /** The top 24 bits of the packet's virtual address. */
+    unsigned int __addr:24;
+  } bits;
+}
+__netio_pkt_handle_t;
+
+#endif /* !__DOXYGEN__ */
+
+
+/**
+ * @brief A handle for an I/O packet's storage.
+ * @ingroup ingress
+ *
+ * netio_pkt_handle_t encodes the concept of a ::netio_pkt_t with its
+ * packet metadata removed.  It is a much smaller type that exists to
+ * facilitate applications where the full ::netio_pkt_t type is too
+ * large, such as those that cache enormous numbers of packets or wish
+ * to transmit packet descriptors over the UDN.
+ *
+ * Because there is no metadata, most ::netio_pkt_t operations cannot be
+ * performed on a netio_pkt_handle_t.  It supports only
+ * netio_free_handle() (to free the buffer) and
+ * NETIO_PKT_CUSTOM_DATA_H() (to access a pointer to its contents).
+ * The application must acquire any additional metadata it wants from the
+ * original ::netio_pkt_t and record it separately.
+ *
+ * A netio_pkt_handle_t can be extracted from a ::netio_pkt_t by calling
+ * NETIO_PKT_HANDLE().  An invalid handle (analogous to NULL) can be
+ * created by assigning the value ::NETIO_PKT_HANDLE_NONE. A handle can
+ * be tested for validity with NETIO_PKT_HANDLE_IS_VALID().
+ */
+typedef struct
+{
+  unsigned int word; /**< Opaque bits. */
+} netio_pkt_handle_t;
+
+/**
+ * @brief A packet descriptor.
+ *
+ * @ingroup ingress
+ * @ingroup egress
+ *
+ * This data structure represents a packet.  The structure is manipulated
+ * through the @ref ingress and the @ref egress.
+ *
+ * While the contents of a netio_pkt_t are opaque, the structure itself is
+ * portable.  This means that it may be shared between all tiles which have
+ * done a netio_input_register() call for the interface on which the pkt_t
+ * was initially received (via netio_get_packet()) or retrieved (via
+ * netio_get_buffer()).  The contents of a netio_pkt_t can be transmitted to
+ * another tile via shared memory, or via a UDN message, or by other means.
+ * The destination tile may then use the pkt_t as if it had originally been
+ * received locally; it may read or write the packet's data, read its
+ * metadata, free the packet, send the packet, transfer the netio_pkt_t to
+ * yet another tile, and so forth.
+ *
+ * Once a netio_pkt_t has been transferred to a second tile, the first tile
+ * should not reference the original copy; in particular, if more than one
+ * tile frees or sends the same netio_pkt_t, the IPP's packet free lists will
+ * become corrupted.  Note also that each tile which reads or modifies
+ * packet data must obey the memory coherency rules outlined in @ref input.
+ */
+typedef struct
+{
+#ifdef __DOXYGEN__
+  /** This structure is opaque. */
+  unsigned char opaque[32];
+#else
+  /** For an ingress packet (one with standard metadata), this is the
+   *  notification header we got from the I/O shim.  For an egress packet
+   *  (one with minimal metadata), this word is zero if the packet has not
+   *  been populated, and nonzero if it has. */
+  __netio_pkt_notif_t __notif_header;
+
+  /** Virtual address of the packet buffer, plus state flags. */
+  __netio_pkt_handle_t __packet;
+
+  /** Metadata associated with the packet. */
+  netio_pkt_metadata_t __metadata;
+#endif
+}
+netio_pkt_t;
+
+
+#ifndef __DOXYGEN__
+
+#define __NETIO_PKT_NOTIF_HEADER(pkt) ((pkt)->__notif_header)
+#define __NETIO_PKT_IPP_HANDLE(pkt) ((pkt)->__packet.bits.__ipp_handle)
+#define __NETIO_PKT_QUEUE(pkt) ((pkt)->__packet.bits.__queue)
+#define __NETIO_PKT_NOTIF_HEADER_M(mda, pkt) ((pkt)->__notif_header)
+#define __NETIO_PKT_IPP_HANDLE_M(mda, pkt) ((pkt)->__packet.bits.__ipp_handle)
+#define __NETIO_PKT_MINIMAL(pkt) ((pkt)->__packet.bits.__minimal)
+#define __NETIO_PKT_QUEUE_M(mda, pkt) ((pkt)->__packet.bits.__queue)
+#define __NETIO_PKT_FLAGS_M(mda, pkt) ((mda)->__flags)
+
+/* Packet information table, used by the attribute access functions below. */
+extern const uint16_t _netio_pkt_info[];
+
+#endif /* __DOXYGEN__ */
+
+
+#ifndef __DOXYGEN__
+/* These macros are deprecated and will disappear in a future MDE release. */
+#define NETIO_PKT_GOOD_CHECKSUM(pkt) \
+  NETIO_PKT_L4_CSUM_CORRECT(pkt)
+#define NETIO_PKT_GOOD_CHECKSUM_M(mda, pkt) \
+  NETIO_PKT_L4_CSUM_CORRECT_M(mda, pkt)
+#endif /* __DOXYGEN__ */
+
+
+/* Packet attribute access functions. */
+
+/** Return a pointer to the metadata for a packet.
+ * @ingroup ingress
+ *
+ * Calling this function once and passing the result to other retrieval
+ * functions with a "_M" suffix usually improves performance.  This
+ * function must be called on an 'ingress' packet (i.e. one retrieved
+ * by @ref netio_get_packet(), on which @ref netio_populate_buffer() or
+ * @ref netio_populate_prepend_buffer have not been called). Use of this
+ * function on an 'egress' packet will cause an assertion failure.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to the packet's standard metadata.
+ */
+static __inline netio_pkt_metadata_t*
+NETIO_PKT_METADATA(netio_pkt_t* pkt)
+{
+  netio_assert(!pkt->__packet.bits.__minimal);
+  return &pkt->__metadata;
+}
+
+
+/** Return a pointer to the minimal metadata for a packet.
+ * @ingroup egress
+ *
+ * Calling this function once and passing the result to other retrieval
+ * functions with a "_MM" suffix usually improves performance.  This
+ * function must be called on an 'egress' packet (i.e. one on which
+ * @ref netio_populate_buffer() or @ref netio_populate_prepend_buffer()
+ * have been called, or one retrieved by @ref netio_get_buffer()). Use of
+ * this function on an 'ingress' packet will cause an assertion failure.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to the packet's standard metadata.
+ */
+static __inline netio_pkt_minimal_metadata_t*
+NETIO_PKT_MINIMAL_METADATA(netio_pkt_t* pkt)
+{
+  netio_assert(pkt->__packet.bits.__minimal);
+  return (netio_pkt_minimal_metadata_t*) &pkt->__metadata;
+}
+
+
+/** Determine whether a packet has 'minimal' metadata.
+ * @ingroup pktfuncs
+ *
+ * This function will return nonzero if the packet is an 'egress'
+ * packet (i.e. one on which @ref netio_populate_buffer() or
+ * @ref netio_populate_prepend_buffer() have been called, or one
+ * retrieved by @ref netio_get_buffer()), and zero if the packet
+ * is an 'ingress' packet (i.e. one retrieved by @ref netio_get_packet(),
+ * which has not been converted into an 'egress' packet).
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the packet has minimal metadata.
+ */
+static __inline unsigned int
+NETIO_PKT_IS_MINIMAL(netio_pkt_t* pkt)
+{
+  return pkt->__packet.bits.__minimal;
+}
+
+
+/** Return a handle for a packet's storage.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return A handle for the packet's storage.
+ */
+static __inline netio_pkt_handle_t
+NETIO_PKT_HANDLE(netio_pkt_t* pkt)
+{
+  netio_pkt_handle_t h;
+  h.word = pkt->__packet.word;
+  return h;
+}
+
+
+/** A special reserved value indicating the absence of a packet handle.
+ *
+ * @ingroup pktfuncs
+ */
+#define NETIO_PKT_HANDLE_NONE ((netio_pkt_handle_t) { 0 })
+
+
+/** Test whether a packet handle is valid.
+ *
+ * Applications may wish to use the reserved value NETIO_PKT_HANDLE_NONE
+ * to indicate no packet at all.  This function tests to see if a packet
+ * handle is a real handle, not this special reserved value.
+ *
+ * @ingroup pktfuncs
+ *
+ * @param[in] handle Handle on which to operate.
+ * @return One if the packet handle is valid, else zero.
+ */
+static __inline unsigned int
+NETIO_PKT_HANDLE_IS_VALID(netio_pkt_handle_t handle)
+{
+  return handle.word != 0;
+}
+
+
+
+/** Return a pointer to the start of the packet's custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ * @ingroup ingress
+ *
+ * @param[in] handle Handle on which to operate.
+ * @return A pointer to start of the packet.
+ */
+static __inline unsigned char*
+NETIO_PKT_CUSTOM_DATA_H(netio_pkt_handle_t handle)
+{
+  return _NETIO_PKT_HANDLE_BASE(handle) + NETIO_PACKET_PADDING;
+}
+
+
+/** Return the length of the packet's custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ *
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet's custom header, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_CUSTOM_HEADER_LENGTH_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  /*
+   * Note that we effectively need to extract a quantity from the flags word
+   * which is measured in words, and then turn it into bytes by shifting
+   * it left by 2.  We do this all at once by just shifting right two less
+   * bits, and shifting the mask up two bits.
+   */
+  return ((mda->__flags >> (_NETIO_PKT_CUSTOM_LEN_SHIFT - 2)) &
+          (_NETIO_PKT_CUSTOM_LEN_RMASK << 2));
+}
+
+
+/** Return the length of the packet, starting with the custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_CUSTOM_LENGTH_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (__NETIO_PKT_NOTIF_HEADER(pkt).bits.__transfer_size -
+          NETIO_PACKET_PADDING);
+}
+
+
+/** Return a pointer to the start of the packet's custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to start of the packet.
+ */
+static __inline unsigned char*
+NETIO_PKT_CUSTOM_DATA_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return NETIO_PKT_CUSTOM_DATA_H(NETIO_PKT_HANDLE(pkt));
+}
+
+
+/** Return the length of the packet's L2 (Ethernet plus VLAN or SNAP) header.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet's L2 header, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L2_HEADER_LENGTH_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  /*
+   * Note that we effectively need to extract a quantity from the flags word
+   * which is measured in words, and then turn it into bytes by shifting
+   * it left by 2.  We do this all at once by just shifting right two less
+   * bits, and shifting the mask up two bits.  We then add two bytes.
+   */
+  return ((mda->__flags >> (_NETIO_PKT_L2_LEN_SHIFT - 2)) &
+          (_NETIO_PKT_L2_LEN_RMASK << 2)) + 2;
+}
+
+
+/** Return the length of the packet, starting with the L2 (Ethernet) header.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L2_LENGTH_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (NETIO_PKT_CUSTOM_LENGTH_M(mda, pkt) -
+          NETIO_PKT_CUSTOM_HEADER_LENGTH_M(mda,pkt));
+}
+
+
+/** Return a pointer to the start of the packet's L2 (Ethernet) header.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to start of the packet.
+ */
+static __inline unsigned char*
+NETIO_PKT_L2_DATA_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (NETIO_PKT_CUSTOM_DATA_M(mda, pkt) +
+          NETIO_PKT_CUSTOM_HEADER_LENGTH_M(mda, pkt));
+}
+
+
+/** Retrieve the length of the packet, starting with the L3 (generally,
+ *  the IP) header.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Length of the packet's L3 header and data, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L3_LENGTH_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (NETIO_PKT_L2_LENGTH_M(mda, pkt) -
+          NETIO_PKT_L2_HEADER_LENGTH_M(mda,pkt));
+}
+
+
+/** Return a pointer to the packet's L3 (generally, the IP) header.
+ * @ingroup ingress
+ *
+ * Note that we guarantee word alignment of the L3 header.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to the packet's L3 header.
+ */
+static __inline unsigned char*
+NETIO_PKT_L3_DATA_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (NETIO_PKT_L2_DATA_M(mda, pkt) +
+          NETIO_PKT_L2_HEADER_LENGTH_M(mda, pkt));
+}
+
+
+/** Return the ordinal of the packet.
+ * @ingroup ingress
+ *
+ * Each packet is given an ordinal number when it is delivered by the IPP.
+ * In the medium term, the ordinal is unique and monotonically increasing,
+ * being incremented by 1 for each packet; the ordinal of the first packet
+ * delivered after the IPP starts is zero.  (Since the ordinal is of finite
+ * size, given enough input packets, it will eventually wrap around to zero;
+ * in the long term, therefore, ordinals are not unique.)  The ordinals
+ * handed out by different IPPs are not disjoint, so two packets from
+ * different IPPs may have identical ordinals.  Packets dropped by the
+ * IPP or by the I/O shim are not assigned ordinals.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's per-IPP packet ordinal.
+ */
+static __inline unsigned int
+NETIO_PKT_ORDINAL_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return mda->__packet_ordinal;
+}
+
+
+/** Return the per-group ordinal of the packet.
+ * @ingroup ingress
+ *
+ * Each packet is given a per-group ordinal number when it is
+ * delivered by the IPP. By default, the group is the packet's VLAN,
+ * although IPP can be recompiled to use different values.  In
+ * the medium term, the ordinal is unique and monotonically
+ * increasing, being incremented by 1 for each packet; the ordinal of
+ * the first packet distributed to a particular group is zero.
+ * (Since the ordinal is of finite size, given enough input packets,
+ * it will eventually wrap around to zero; in the long term,
+ * therefore, ordinals are not unique.)  The ordinals handed out by
+ * different IPPs are not disjoint, so two packets from different IPPs
+ * may have identical ordinals; similarly, packets distributed to
+ * different groups may have identical ordinals.  Packets dropped by
+ * the IPP or by the I/O shim are not assigned ordinals.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's per-IPP, per-group ordinal.
+ */
+static __inline unsigned int
+NETIO_PKT_GROUP_ORDINAL_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return mda->__group_ordinal;
+}
+
+
+/** Return the VLAN ID assigned to the packet.
+ * @ingroup ingress
+ *
+ * This value is usually contained within the packet header.
+ *
+ * This value will be zero if the packet does not have a VLAN tag, or if
+ * this value was not extracted from the packet.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's VLAN ID.
+ */
+static __inline unsigned short
+NETIO_PKT_VLAN_ID_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  int vl = (mda->__flags >> _NETIO_PKT_VLAN_SHIFT) & _NETIO_PKT_VLAN_RMASK;
+  unsigned short* pkt_p;
+  int index;
+  unsigned short val;
+
+  if (vl == _NETIO_PKT_VLAN_NONE)
+    return 0;
+
+  pkt_p = (unsigned short*) NETIO_PKT_L2_DATA_M(mda, pkt);
+  index = (mda->__flags >> _NETIO_PKT_TYPE_SHIFT) & _NETIO_PKT_TYPE_RMASK;
+
+  val = pkt_p[(_netio_pkt_info[index] >> _NETIO_PKT_INFO_VLAN_SHIFT) &
+              _NETIO_PKT_INFO_VLAN_RMASK];
+
+#ifdef __TILECC__
+  return (__insn_bytex(val) >> 16) & 0xFFF;
+#else
+  return (__builtin_bswap32(val) >> 16) & 0xFFF;
+#endif
+}
+
+
+/** Return the ethertype of the packet.
+ * @ingroup ingress
+ *
+ * This value is usually contained within the packet header.
+ *
+ * This value is reliable if @ref NETIO_PKT_ETHERTYPE_RECOGNIZED_M()
+ * returns true, and otherwise, may not be well defined.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's ethertype.
+ */
+static __inline unsigned short
+NETIO_PKT_ETHERTYPE_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  unsigned short* pkt_p = (unsigned short*) NETIO_PKT_L2_DATA_M(mda, pkt);
+  int index = (mda->__flags >> _NETIO_PKT_TYPE_SHIFT) & _NETIO_PKT_TYPE_RMASK;
+
+  unsigned short val =
+    pkt_p[(_netio_pkt_info[index] >> _NETIO_PKT_INFO_ETYPE_SHIFT) &
+          _NETIO_PKT_INFO_ETYPE_RMASK];
+
+  return __builtin_bswap32(val) >> 16;
+}
+
+
+/** Return the flow hash computed on the packet.
+ * @ingroup ingress
+ *
+ * For TCP and UDP packets, this hash is calculated by hashing together
+ * the "5-tuple" values, specifically the source IP address, destination
+ * IP address, protocol type, source port and destination port.
+ * The hash value is intended to be helpful for millions of distinct
+ * flows.
+ *
+ * For IPv4 or IPv6 packets which are neither TCP nor UDP, the flow hash is
+ * derived by hashing together the source and destination IP addresses.
+ *
+ * For MPLS-encapsulated packets, the flow hash is derived by hashing
+ * the first MPLS label.
+ *
+ * For all other packets the flow hash is computed from the source
+ * and destination Ethernet addresses.
+ *
+ * The hash is symmetric, meaning it produces the same value if the
+ * source and destination are swapped. The only exceptions are
+ * tunneling protocols 0x04 (IP in IP Encapsulation), 0x29 (Simple
+ * Internet Protocol), 0x2F (General Routing Encapsulation) and 0x32
+ * (Encap Security Payload), which use only the destination address
+ * since the source address is not meaningful.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's 32-bit flow hash.
+ */
+static __inline unsigned int
+NETIO_PKT_FLOW_HASH_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return mda->__flow_hash;
+}
+
+
+/** Return the first word of "user data" for the packet.
+ *
+ * The contents of the user data words depend on the IPP.
+ *
+ * When using the standard ipp1, ipp2, or ipp4 sub-drivers, the first
+ * word of user data contains the least significant bits of the 64-bit
+ * arrival cycle count (see @c get_cycle_count_low()).
+ *
+ * See the <em>System Programmer's Guide</em> for details.
+ *
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's first word of "user data".
+ */
+static __inline unsigned int
+NETIO_PKT_USER_DATA_0_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return mda->__user_data_0;
+}
+
+
+/** Return the second word of "user data" for the packet.
+ *
+ * The contents of the user data words depend on the IPP.
+ *
+ * When using the standard ipp1, ipp2, or ipp4 sub-drivers, the second
+ * word of user data contains the most significant bits of the 64-bit
+ * arrival cycle count (see @c get_cycle_count_high()).
+ *
+ * See the <em>System Programmer's Guide</em> for details.
+ *
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's second word of "user data".
+ */
+static __inline unsigned int
+NETIO_PKT_USER_DATA_1_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return mda->__user_data_1;
+}
+
+
+/** Determine whether the L4 (TCP/UDP) checksum was calculated.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the L4 checksum was calculated.
+ */
+static __inline unsigned int
+NETIO_PKT_L4_CSUM_CALCULATED_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return !(mda->__flags & _NETIO_PKT_NO_L4_CSUM_MASK);
+}
+
+
+/** Determine whether the L4 (TCP/UDP) checksum was calculated and found to
+ *  be correct.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the checksum was calculated and is correct.
+ */
+static __inline unsigned int
+NETIO_PKT_L4_CSUM_CORRECT_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return !(mda->__flags &
+           (_NETIO_PKT_BAD_L4_CSUM_MASK | _NETIO_PKT_NO_L4_CSUM_MASK));
+}
+
+
+/** Determine whether the L3 (IP) checksum was calculated.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the L3 (IP) checksum was calculated.
+*/
+static __inline unsigned int
+NETIO_PKT_L3_CSUM_CALCULATED_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return !(mda->__flags & _NETIO_PKT_NO_L3_CSUM_MASK);
+}
+
+
+/** Determine whether the L3 (IP) checksum was calculated and found to be
+ *  correct.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the checksum was calculated and is correct.
+ */
+static __inline unsigned int
+NETIO_PKT_L3_CSUM_CORRECT_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return !(mda->__flags &
+           (_NETIO_PKT_BAD_L3_CSUM_MASK | _NETIO_PKT_NO_L3_CSUM_MASK));
+}
+
+
+/** Determine whether the ethertype was recognized and L3 packet data was
+ *  processed.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the ethertype was recognized and L3 packet data was
+ *   processed.
+ */
+static __inline unsigned int
+NETIO_PKT_ETHERTYPE_RECOGNIZED_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return !(mda->__flags & _NETIO_PKT_TYPE_UNRECOGNIZED_MASK);
+}
+
+
+/** Retrieve the status of a packet and any errors that may have occurred
+ * during ingress processing (length mismatches, CRC errors, etc.).
+ * @ingroup ingress
+ *
+ * Note that packets for which @ref NETIO_PKT_ETHERTYPE_RECOGNIZED()
+ * returns zero are always reported as underlength, as there is no a priori
+ * means to determine their length.  Normally, applications should use
+ * @ref NETIO_PKT_BAD_M() instead of explicitly checking status with this
+ * function.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's status.
+ */
+static __inline netio_pkt_status_t
+NETIO_PKT_STATUS_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (netio_pkt_status_t) __NETIO_PKT_NOTIF_HEADER(pkt).bits.__status;
+}
+
+
+/** Report whether a packet is bad (i.e., was shorter than expected based on
+ *  its headers, or had a bad CRC).
+ * @ingroup ingress
+ *
+ * Note that this function does not verify L3 or L4 checksums.
+ *
+ * @param[in] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the packet is bad and should be discarded.
+ */
+static __inline unsigned int
+NETIO_PKT_BAD_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return ((NETIO_PKT_STATUS_M(mda, pkt) & 1) &&
+          (NETIO_PKT_ETHERTYPE_RECOGNIZED_M(mda, pkt) ||
+           NETIO_PKT_STATUS_M(mda, pkt) == NETIO_PKT_STATUS_BAD));
+}
+
+
+/** Return the length of the packet, starting with the L2 (Ethernet) header.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L2_LENGTH_MM(netio_pkt_minimal_metadata_t* mmd, netio_pkt_t* pkt)
+{
+  return mmd->l2_length;
+}
+
+
+/** Return the length of the L2 (Ethernet) header.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet's L2 header, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L2_HEADER_LENGTH_MM(netio_pkt_minimal_metadata_t* mmd,
+                              netio_pkt_t* pkt)
+{
+  return mmd->l3_offset - mmd->l2_offset;
+}
+
+
+/** Return the length of the packet, starting with the L3 (IP) header.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return Length of the packet's L3 header and data, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L3_LENGTH_MM(netio_pkt_minimal_metadata_t* mmd, netio_pkt_t* pkt)
+{
+  return (NETIO_PKT_L2_LENGTH_MM(mmd, pkt) -
+          NETIO_PKT_L2_HEADER_LENGTH_MM(mmd, pkt));
+}
+
+
+/** Return a pointer to the packet's L3 (generally, the IP) header.
+ * @ingroup egress
+ *
+ * Note that we guarantee word alignment of the L3 header.
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to the packet's L3 header.
+ */
+static __inline unsigned char*
+NETIO_PKT_L3_DATA_MM(netio_pkt_minimal_metadata_t* mmd, netio_pkt_t* pkt)
+{
+  return _NETIO_PKT_BASE(pkt) + mmd->l3_offset;
+}
+
+
+/** Return a pointer to the packet's L2 (Ethernet) header.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to start of the packet.
+ */
+static __inline unsigned char*
+NETIO_PKT_L2_DATA_MM(netio_pkt_minimal_metadata_t* mmd, netio_pkt_t* pkt)
+{
+  return _NETIO_PKT_BASE(pkt) + mmd->l2_offset;
+}
+
+
+/** Retrieve the status of a packet and any errors that may have occurred
+ * during ingress processing (length mismatches, CRC errors, etc.).
+ * @ingroup ingress
+ *
+ * Note that packets for which @ref NETIO_PKT_ETHERTYPE_RECOGNIZED()
+ * returns zero are always reported as underlength, as there is no a priori
+ * means to determine their length.  Normally, applications should use
+ * @ref NETIO_PKT_BAD() instead of explicitly checking status with this
+ * function.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's status.
+ */
+static __inline netio_pkt_status_t
+NETIO_PKT_STATUS(netio_pkt_t* pkt)
+{
+  netio_assert(!pkt->__packet.bits.__minimal);
+
+  return (netio_pkt_status_t) __NETIO_PKT_NOTIF_HEADER(pkt).bits.__status;
+}
+
+
+/** Report whether a packet is bad (i.e., was shorter than expected based on
+ *  its headers, or had a bad CRC).
+ * @ingroup ingress
+ *
+ * Note that this function does not verify L3 or L4 checksums.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the packet is bad and should be discarded.
+ */
+static __inline unsigned int
+NETIO_PKT_BAD(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_BAD_M(mda, pkt);
+}
+
+
+/** Return the length of the packet's custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet's custom header, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_CUSTOM_HEADER_LENGTH(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_CUSTOM_HEADER_LENGTH_M(mda, pkt);
+}
+
+
+/** Return the length of the packet, starting with the custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return  The length of the packet, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_CUSTOM_LENGTH(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_CUSTOM_LENGTH_M(mda, pkt);
+}
+
+
+/** Return a pointer to the packet's custom header.
+ *  A custom header may or may not be present, depending upon the IPP; its
+ *  contents and alignment are also IPP-dependent.  Currently, none of the
+ *  standard IPPs supplied by Tilera produce a custom header.  If present,
+ *  the custom header precedes the L2 header in the packet buffer.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to start of the packet.
+ */
+static __inline unsigned char*
+NETIO_PKT_CUSTOM_DATA(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_CUSTOM_DATA_M(mda, pkt);
+}
+
+
+/** Return the length of the packet's L2 (Ethernet plus VLAN or SNAP) header.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The length of the packet's L2 header, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L2_HEADER_LENGTH(netio_pkt_t* pkt)
+{
+  if (NETIO_PKT_IS_MINIMAL(pkt))
+  {
+    netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+    return NETIO_PKT_L2_HEADER_LENGTH_MM(mmd, pkt);
+  }
+  else
+  {
+    netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+    return NETIO_PKT_L2_HEADER_LENGTH_M(mda, pkt);
+  }
+}
+
+
+/** Return the length of the packet, starting with the L2 (Ethernet) header.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return  The length of the packet, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L2_LENGTH(netio_pkt_t* pkt)
+{
+  if (NETIO_PKT_IS_MINIMAL(pkt))
+  {
+    netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+    return NETIO_PKT_L2_LENGTH_MM(mmd, pkt);
+  }
+  else
+  {
+    netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+    return NETIO_PKT_L2_LENGTH_M(mda, pkt);
+  }
+}
+
+
+/** Return a pointer to the packet's L2 (Ethernet) header.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to start of the packet.
+ */
+static __inline unsigned char*
+NETIO_PKT_L2_DATA(netio_pkt_t* pkt)
+{
+  if (NETIO_PKT_IS_MINIMAL(pkt))
+  {
+    netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+    return NETIO_PKT_L2_DATA_MM(mmd, pkt);
+  }
+  else
+  {
+    netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+    return NETIO_PKT_L2_DATA_M(mda, pkt);
+  }
+}
+
+
+/** Retrieve the length of the packet, starting with the L3 (generally, the IP)
+ * header.
+ * @ingroup pktfuncs
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Length of the packet's L3 header and data, in bytes.
+ */
+static __inline netio_size_t
+NETIO_PKT_L3_LENGTH(netio_pkt_t* pkt)
+{
+  if (NETIO_PKT_IS_MINIMAL(pkt))
+  {
+    netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+    return NETIO_PKT_L3_LENGTH_MM(mmd, pkt);
+  }
+  else
+  {
+    netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+    return NETIO_PKT_L3_LENGTH_M(mda, pkt);
+  }
+}
+
+
+/** Return a pointer to the packet's L3 (generally, the IP) header.
+ * @ingroup pktfuncs
+ *
+ * Note that we guarantee word alignment of the L3 header.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return A pointer to the packet's L3 header.
+ */
+static __inline unsigned char*
+NETIO_PKT_L3_DATA(netio_pkt_t* pkt)
+{
+  if (NETIO_PKT_IS_MINIMAL(pkt))
+  {
+    netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+    return NETIO_PKT_L3_DATA_MM(mmd, pkt);
+  }
+  else
+  {
+    netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+    return NETIO_PKT_L3_DATA_M(mda, pkt);
+  }
+}
+
+
+/** Return the ordinal of the packet.
+ * @ingroup ingress
+ *
+ * Each packet is given an ordinal number when it is delivered by the IPP.
+ * In the medium term, the ordinal is unique and monotonically increasing,
+ * being incremented by 1 for each packet; the ordinal of the first packet
+ * delivered after the IPP starts is zero.  (Since the ordinal is of finite
+ * size, given enough input packets, it will eventually wrap around to zero;
+ * in the long term, therefore, ordinals are not unique.)  The ordinals
+ * handed out by different IPPs are not disjoint, so two packets from
+ * different IPPs may have identical ordinals.  Packets dropped by the
+ * IPP or by the I/O shim are not assigned ordinals.
+ *
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's per-IPP packet ordinal.
+ */
+static __inline unsigned int
+NETIO_PKT_ORDINAL(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_ORDINAL_M(mda, pkt);
+}
+
+
+/** Return the per-group ordinal of the packet.
+ * @ingroup ingress
+ *
+ * Each packet is given a per-group ordinal number when it is
+ * delivered by the IPP. By default, the group is the packet's VLAN,
+ * although IPP can be recompiled to use different values.  In
+ * the medium term, the ordinal is unique and monotonically
+ * increasing, being incremented by 1 for each packet; the ordinal of
+ * the first packet distributed to a particular group is zero.
+ * (Since the ordinal is of finite size, given enough input packets,
+ * it will eventually wrap around to zero; in the long term,
+ * therefore, ordinals are not unique.)  The ordinals handed out by
+ * different IPPs are not disjoint, so two packets from different IPPs
+ * may have identical ordinals; similarly, packets distributed to
+ * different groups may have identical ordinals.  Packets dropped by
+ * the IPP or by the I/O shim are not assigned ordinals.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's per-IPP, per-group ordinal.
+ */
+static __inline unsigned int
+NETIO_PKT_GROUP_ORDINAL(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_GROUP_ORDINAL_M(mda, pkt);
+}
+
+
+/** Return the VLAN ID assigned to the packet.
+ * @ingroup ingress
+ *
+ * This is usually also contained within the packet header.  If the packet
+ * does not have a VLAN tag, the VLAN ID returned by this function is zero.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's VLAN ID.
+ */
+static __inline unsigned short
+NETIO_PKT_VLAN_ID(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_VLAN_ID_M(mda, pkt);
+}
+
+
+/** Return the ethertype of the packet.
+ * @ingroup ingress
+ *
+ * This value is reliable if @ref NETIO_PKT_ETHERTYPE_RECOGNIZED()
+ * returns true, and otherwise, may not be well defined.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's ethertype.
+ */
+static __inline unsigned short
+NETIO_PKT_ETHERTYPE(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_ETHERTYPE_M(mda, pkt);
+}
+
+
+/** Return the flow hash computed on the packet.
+ * @ingroup ingress
+ *
+ * For TCP and UDP packets, this hash is calculated by hashing together
+ * the "5-tuple" values, specifically the source IP address, destination
+ * IP address, protocol type, source port and destination port.
+ * The hash value is intended to be helpful for millions of distinct
+ * flows.
+ *
+ * For IPv4 or IPv6 packets which are neither TCP nor UDP, the flow hash is
+ * derived by hashing together the source and destination IP addresses.
+ *
+ * For MPLS-encapsulated packets, the flow hash is derived by hashing
+ * the first MPLS label.
+ *
+ * For all other packets the flow hash is computed from the source
+ * and destination Ethernet addresses.
+ *
+ * The hash is symmetric, meaning it produces the same value if the
+ * source and destination are swapped. The only exceptions are
+ * tunneling protocols 0x04 (IP in IP Encapsulation), 0x29 (Simple
+ * Internet Protocol), 0x2F (General Routing Encapsulation) and 0x32
+ * (Encap Security Payload), which use only the destination address
+ * since the source address is not meaningful.
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's 32-bit flow hash.
+ */
+static __inline unsigned int
+NETIO_PKT_FLOW_HASH(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_FLOW_HASH_M(mda, pkt);
+}
+
+
+/** Return the first word of "user data" for the packet.
+ *
+ * The contents of the user data words depend on the IPP.
+ *
+ * When using the standard ipp1, ipp2, or ipp4 sub-drivers, the first
+ * word of user data contains the least significant bits of the 64-bit
+ * arrival cycle count (see @c get_cycle_count_low()).
+ *
+ * See the <em>System Programmer's Guide</em> for details.
+ *
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's first word of "user data".
+ */
+static __inline unsigned int
+NETIO_PKT_USER_DATA_0(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_USER_DATA_0_M(mda, pkt);
+}
+
+
+/** Return the second word of "user data" for the packet.
+ *
+ * The contents of the user data words depend on the IPP.
+ *
+ * When using the standard ipp1, ipp2, or ipp4 sub-drivers, the second
+ * word of user data contains the most significant bits of the 64-bit
+ * arrival cycle count (see @c get_cycle_count_high()).
+ *
+ * See the <em>System Programmer's Guide</em> for details.
+ *
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return The packet's second word of "user data".
+ */
+static __inline unsigned int
+NETIO_PKT_USER_DATA_1(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_USER_DATA_1_M(mda, pkt);
+}
+
+
+/** Determine whether the L4 (TCP/UDP) checksum was calculated.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the L4 checksum was calculated.
+ */
+static __inline unsigned int
+NETIO_PKT_L4_CSUM_CALCULATED(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_L4_CSUM_CALCULATED_M(mda, pkt);
+}
+
+
+/** Determine whether the L4 (TCP/UDP) checksum was calculated and found to
+ *  be correct.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the checksum was calculated and is correct.
+ */
+static __inline unsigned int
+NETIO_PKT_L4_CSUM_CORRECT(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_L4_CSUM_CORRECT_M(mda, pkt);
+}
+
+
+/** Determine whether the L3 (IP) checksum was calculated.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the L3 (IP) checksum was calculated.
+*/
+static __inline unsigned int
+NETIO_PKT_L3_CSUM_CALCULATED(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_L3_CSUM_CALCULATED_M(mda, pkt);
+}
+
+
+/** Determine whether the L3 (IP) checksum was calculated and found to be
+ *  correct.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the checksum was calculated and is correct.
+ */
+static __inline unsigned int
+NETIO_PKT_L3_CSUM_CORRECT(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_L3_CSUM_CORRECT_M(mda, pkt);
+}
+
+
+/** Determine whether the Ethertype was recognized and L3 packet data was
+ *  processed.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ * @return Nonzero if the Ethertype was recognized and L3 packet data was
+ *   processed.
+ */
+static __inline unsigned int
+NETIO_PKT_ETHERTYPE_RECOGNIZED(netio_pkt_t* pkt)
+{
+  netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+  return NETIO_PKT_ETHERTYPE_RECOGNIZED_M(mda, pkt);
+}
+
+
+/** Set an egress packet's L2 length, using a metadata pointer to speed the
+ * computation.
+ * @ingroup egress
+ *
+ * @param[in,out] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @param[in] len Packet L2 length, in bytes.
+ */
+static __inline void
+NETIO_PKT_SET_L2_LENGTH_MM(netio_pkt_minimal_metadata_t* mmd, netio_pkt_t* pkt,
+                           int len)
+{
+  mmd->l2_length = len;
+}
+
+
+/** Set an egress packet's L2 length.
+ * @ingroup egress
+ *
+ * @param[in,out] pkt Packet on which to operate.
+ * @param[in] len Packet L2 length, in bytes.
+ */
+static __inline void
+NETIO_PKT_SET_L2_LENGTH(netio_pkt_t* pkt, int len)
+{
+  netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+  NETIO_PKT_SET_L2_LENGTH_MM(mmd, pkt, len);
+}
+
+
+/** Set an egress packet's L2 header length, using a metadata pointer to
+ *  speed the computation.
+ * @ingroup egress
+ *
+ * It is not normally necessary to call this routine; only the L2 length,
+ * not the header length, is needed to transmit a packet.  It may be useful if
+ * the egress packet will later be processed by code which expects to use
+ * functions like @ref NETIO_PKT_L3_DATA() to get a pointer to the L3 payload.
+ *
+ * @param[in,out] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @param[in] len Packet L2 header length, in bytes.
+ */
+static __inline void
+NETIO_PKT_SET_L2_HEADER_LENGTH_MM(netio_pkt_minimal_metadata_t* mmd,
+                                  netio_pkt_t* pkt, int len)
+{
+  mmd->l3_offset = mmd->l2_offset + len;
+}
+
+
+/** Set an egress packet's L2 header length.
+ * @ingroup egress
+ *
+ * It is not normally necessary to call this routine; only the L2 length,
+ * not the header length, is needed to transmit a packet.  It may be useful if
+ * the egress packet will later be processed by code which expects to use
+ * functions like @ref NETIO_PKT_L3_DATA() to get a pointer to the L3 payload.
+ *
+ * @param[in,out] pkt Packet on which to operate.
+ * @param[in] len Packet L2 header length, in bytes.
+ */
+static __inline void
+NETIO_PKT_SET_L2_HEADER_LENGTH(netio_pkt_t* pkt, int len)
+{
+  netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+  NETIO_PKT_SET_L2_HEADER_LENGTH_MM(mmd, pkt, len);
+}
+
+
+/** Set up an egress packet for hardware checksum computation, using a
+ *  metadata pointer to speed the operation.
+ * @ingroup egress
+ *
+ *  NetIO provides the ability to automatically calculate a standard
+ *  16-bit Internet checksum on transmitted packets.  The application
+ *  may specify the point in the packet where the checksum starts, the
+ *  number of bytes to be checksummed, and the two bytes in the packet
+ *  which will be replaced with the completed checksum.  (If the range
+ *  of bytes to be checksummed includes the bytes to be replaced, the
+ *  initial values of those bytes will be included in the checksum.)
+ *
+ *  For some protocols, the packet checksum covers data which is not present
+ *  in the packet, or is at least not contiguous to the main data payload.
+ *  For instance, the TCP checksum includes a "pseudo-header" which includes
+ *  the source and destination IP addresses of the packet.  To accommodate
+ *  this, the checksum engine may be "seeded" with an initial value, which
+ *  the application would need to compute based on the specific protocol's
+ *  requirements.  Note that the seed is given in host byte order (little-
+ *  endian), not network byte order (big-endian); code written to compute a
+ *  pseudo-header checksum in network byte order will need to byte-swap it
+ *  before use as the seed.
+ *
+ *  Note that the checksum is computed as part of the transmission process,
+ *  so it will not be present in the packet upon completion of this routine.
+ *
+ * @param[in,out] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ * @param[in] start Offset within L2 packet of the first byte to include in
+ *   the checksum.
+ * @param[in] length Number of bytes to include in the checksum.
+ *   the checksum.
+ * @param[in] location Offset within L2 packet of the first of the two bytes
+ *   to be replaced with the calculated checksum.
+ * @param[in] seed Initial value of the running checksum before any of the
+ *   packet data is added.
+ */
+static __inline void
+NETIO_PKT_DO_EGRESS_CSUM_MM(netio_pkt_minimal_metadata_t* mmd,
+                            netio_pkt_t* pkt, int start, int length,
+                            int location, uint16_t seed)
+{
+  mmd->csum_start = start;
+  mmd->csum_length = length;
+  mmd->csum_location = location;
+  mmd->csum_seed = seed;
+  mmd->flags |= _NETIO_PKT_NEED_EDMA_CSUM_MASK;
+}
+
+
+/** Set up an egress packet for hardware checksum computation.
+ * @ingroup egress
+ *
+ *  NetIO provides the ability to automatically calculate a standard
+ *  16-bit Internet checksum on transmitted packets.  The application
+ *  may specify the point in the packet where the checksum starts, the
+ *  number of bytes to be checksummed, and the two bytes in the packet
+ *  which will be replaced with the completed checksum.  (If the range
+ *  of bytes to be checksummed includes the bytes to be replaced, the
+ *  initial values of those bytes will be included in the checksum.)
+ *
+ *  For some protocols, the packet checksum covers data which is not present
+ *  in the packet, or is at least not contiguous to the main data payload.
+ *  For instance, the TCP checksum includes a "pseudo-header" which includes
+ *  the source and destination IP addresses of the packet.  To accommodate
+ *  this, the checksum engine may be "seeded" with an initial value, which
+ *  the application would need to compute based on the specific protocol's
+ *  requirements.  Note that the seed is given in host byte order (little-
+ *  endian), not network byte order (big-endian); code written to compute a
+ *  pseudo-header checksum in network byte order will need to byte-swap it
+ *  before use as the seed.
+ *
+ *  Note that the checksum is computed as part of the transmission process,
+ *  so it will not be present in the packet upon completion of this routine.
+ *
+ * @param[in,out] pkt Packet on which to operate.
+ * @param[in] start Offset within L2 packet of the first byte to include in
+ *   the checksum.
+ * @param[in] length Number of bytes to include in the checksum.
+ *   the checksum.
+ * @param[in] location Offset within L2 packet of the first of the two bytes
+ *   to be replaced with the calculated checksum.
+ * @param[in] seed Initial value of the running checksum before any of the
+ *   packet data is added.
+ */
+static __inline void
+NETIO_PKT_DO_EGRESS_CSUM(netio_pkt_t* pkt, int start, int length,
+                         int location, uint16_t seed)
+{
+  netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+  NETIO_PKT_DO_EGRESS_CSUM_MM(mmd, pkt, start, length, location, seed);
+}
+
+
+/** Return the number of bytes which could be prepended to a packet, using a
+ *  metadata pointer to speed the operation.
+ *  See @ref netio_populate_prepend_buffer() to get a full description of
+ *  prepending.
+ *
+ * @param[in,out] mda Pointer to packet's standard metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline int
+NETIO_PKT_PREPEND_AVAIL_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+  return (pkt->__packet.bits.__offset << 6) +
+         NETIO_PKT_CUSTOM_HEADER_LENGTH_M(mda, pkt);
+}
+
+
+/** Return the number of bytes which could be prepended to a packet, using a
+ *  metadata pointer to speed the operation.
+ *  See @ref netio_populate_prepend_buffer() to get a full description of
+ *  prepending.
+ * @ingroup egress
+ *
+ * @param[in,out] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline int
+NETIO_PKT_PREPEND_AVAIL_MM(netio_pkt_minimal_metadata_t* mmd, netio_pkt_t* pkt)
+{
+  return (pkt->__packet.bits.__offset << 6) + mmd->l2_offset;
+}
+
+
+/** Return the number of bytes which could be prepended to a packet.
+ *  See @ref netio_populate_prepend_buffer() to get a full description of
+ *  prepending.
+ * @ingroup egress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline int
+NETIO_PKT_PREPEND_AVAIL(netio_pkt_t* pkt)
+{
+  if (NETIO_PKT_IS_MINIMAL(pkt))
+  {
+    netio_pkt_minimal_metadata_t* mmd = NETIO_PKT_MINIMAL_METADATA(pkt);
+
+    return NETIO_PKT_PREPEND_AVAIL_MM(mmd, pkt);
+  }
+  else
+  {
+    netio_pkt_metadata_t* mda = NETIO_PKT_METADATA(pkt);
+
+    return NETIO_PKT_PREPEND_AVAIL_M(mda, pkt);
+  }
+}
+
+
+/** Flush a packet's minimal metadata from the cache, using a metadata pointer
+ *  to speed the operation.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_MINIMAL_METADATA_MM(netio_pkt_minimal_metadata_t* mmd,
+                                    netio_pkt_t* pkt)
+{
+}
+
+
+/** Invalidate a packet's minimal metadata from the cache, using a metadata
+ *  pointer to speed the operation.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_INV_MINIMAL_METADATA_MM(netio_pkt_minimal_metadata_t* mmd,
+                                  netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush and then invalidate a packet's minimal metadata from the cache,
+ *  using a metadata pointer to speed the operation.
+ * @ingroup egress
+ *
+ * @param[in] mmd Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_INV_MINIMAL_METADATA_MM(netio_pkt_minimal_metadata_t* mmd,
+                                        netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush a packet's metadata from the cache, using a metadata pointer
+ *  to speed the operation.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's minimal metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_METADATA_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+}
+
+
+/** Invalidate a packet's metadata from the cache, using a metadata
+ *  pointer to speed the operation.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_INV_METADATA_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush and then invalidate a packet's metadata from the cache,
+ *  using a metadata pointer to speed the operation.
+ * @ingroup ingress
+ *
+ * @param[in] mda Pointer to packet's metadata.
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_INV_METADATA_M(netio_pkt_metadata_t* mda, netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush a packet's minimal metadata from the cache.
+ * @ingroup egress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_MINIMAL_METADATA(netio_pkt_t* pkt)
+{
+}
+
+
+/** Invalidate a packet's minimal metadata from the cache.
+ * @ingroup egress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_INV_MINIMAL_METADATA(netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush and then invalidate a packet's minimal metadata from the cache.
+ * @ingroup egress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_INV_MINIMAL_METADATA(netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush a packet's metadata from the cache.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_METADATA(netio_pkt_t* pkt)
+{
+}
+
+
+/** Invalidate a packet's metadata from the cache.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_INV_METADATA(netio_pkt_t* pkt)
+{
+}
+
+
+/** Flush and then invalidate a packet's metadata from the cache.
+ * @ingroup ingress
+ *
+ * @param[in] pkt Packet on which to operate.
+ */
+static __inline void
+NETIO_PKT_FLUSH_INV_METADATA(netio_pkt_t* pkt)
+{
+}
+
+/** Number of NUMA nodes we can distribute buffers to.
+ * @ingroup setup */
+#define NETIO_NUM_NODE_WEIGHTS  16
+
+/**
+ * @brief An object for specifying the characteristics of NetIO communication
+ * endpoint.
+ *
+ * @ingroup setup
+ *
+ * The @ref netio_input_register() function uses this structure to define
+ * how an application tile will communicate with an IPP.
+ *
+ *
+ * Future updates to NetIO may add new members to this structure,
+ * which can affect the success of the registration operation.  Thus,
+ * if dynamically initializing the structure, applications are urged to
+ * zero it out first, for example:
+ *
+ * @code
+ * netio_input_config_t config;
+ * memset(&config, 0, sizeof (config));
+ * config.flags = NETIO_RECV | NETIO_XMIT_CSUM | NETIO_TAG_NONE;
+ * config.num_receive_packets = NETIO_MAX_RECEIVE_PKTS;
+ * config.queue_id = 0;
+ *     .
+ *     .
+ *     .
+ * @endcode
+ *
+ * since that guarantees that any unused structure members, including
+ * members which did not exist when the application was first developed,
+ * will not have unexpected values.
+ *
+ * If statically initializing the structure, we strongly recommend use of
+ * C99-style named initializers, for example:
+ *
+ * @code
+ * netio_input_config_t config = {
+ *    .flags = NETIO_RECV | NETIO_XMIT_CSUM | NETIO_TAG_NONE,
+ *    .num_receive_packets = NETIO_MAX_RECEIVE_PKTS,
+ *    .queue_id = 0,
+ * },
+ * @endcode
+ *
+ * instead of the old-style structure initialization:
+ *
+ * @code
+ * // Bad example! Currently equivalent to the above, but don't do this.
+ * netio_input_config_t config = {
+ *    NETIO_RECV | NETIO_XMIT_CSUM | NETIO_TAG_NONE, NETIO_MAX_RECEIVE_PKTS, 0
+ * },
+ * @endcode
+ *
+ * since the C99 style requires no changes to the code if elements of the
+ * config structure are rearranged.  (It also makes the initialization much
+ * easier to understand.)
+ *
+ * Except for items which address a particular tile's transmit or receive
+ * characteristics, such as the ::NETIO_RECV flag, applications are advised
+ * to specify the same set of configuration data on all registrations.
+ * This prevents differing results if multiple tiles happen to do their
+ * registration operations in a different order on different invocations of
+ * the application.  This is particularly important for things like link
+ * management flags, and buffer size and homing specifications.
+ *
+ * Unless the ::NETIO_FIXED_BUFFER_VA flag is specified in flags, the NetIO
+ * buffer pool is automatically created and mapped into the application's
+ * virtual address space at an address chosen by the operating system,
+ * using the common memory (cmem) facility in the Tilera Multicore
+ * Components library.  The cmem facility allows multiple processes to gain
+ * access to shared memory which is mapped into each process at an
+ * identical virtual address.  In order for this to work, the processes
+ * must have a common ancestor, which must create the common memory using
+ * tmc_cmem_init().
+ *
+ * In programs using the iLib process creation API, or in programs which use
+ * only one process (which include programs using the pthreads library),
+ * tmc_cmem_init() is called automatically.  All other applications
+ * must call it explicitly, before any child processes which might call
+ * netio_input_register() are created.
+ */
+typedef struct
+{
+  /** Registration characteristics.
+
+      This value determines several characteristics of the registration;
+      flags for different types of behavior are ORed together to make the
+      final flag value.  Generally applications should specify exactly
+      one flag from each of the following categories:
+
+      - Whether the application will be receiving packets on this queue
+        (::NETIO_RECV or ::NETIO_NO_RECV).
+
+      - Whether the application will be transmitting packets on this queue,
+        and if so, whether it will request egress checksum calculation
+        (::NETIO_XMIT, ::NETIO_XMIT_CSUM, or ::NETIO_NO_XMIT).  It is
+        legal to call netio_get_buffer() without one of the XMIT flags,
+        as long as ::NETIO_RECV is specified; in this case, the retrieved
+        buffers must be passed to another tile for transmission.
+
+      - Whether the application expects any vendor-specific tags in
+        its packets' L2 headers (::NETIO_TAG_NONE, ::NETIO_TAG_BRCM,
+        or ::NETIO_TAG_MRVL).  This must match the configuration of the
+        target IPP.
+
+      To accommodate applications written to previous versions of the NetIO
+      interface, none of the flags above are currently required; if omitted,
+      NetIO behaves more or less as if ::NETIO_RECV | ::NETIO_XMIT_CSUM |
+      ::NETIO_TAG_NONE were used.  However, explicit specification of
+      the relevant flags allows NetIO to do a better job of resource
+      allocation, allows earlier detection of certain configuration errors,
+      and may enable advanced features or higher performance in the future,
+      so their use is strongly recommended.
+
+      Note that specifying ::NETIO_NO_RECV along with ::NETIO_NO_XMIT
+      is a special case, intended primarily for use by programs which
+      retrieve network statistics or do link management operations.
+      When these flags are both specified, the resulting queue may not
+      be used with NetIO routines other than netio_get(), netio_set(),
+      and netio_input_unregister().  See @ref link for more information
+      on link management.
+
+      Other flags are optional; their use is described below.
+  */
+  int flags;
+
+  /** Interface name.  This is a string which identifies the specific
+      Ethernet controller hardware to be used.  The format of the string
+      is a device type and a device index, separated by a slash; so,
+      the first 10 Gigabit Ethernet controller is named "xgbe/0", while
+      the second 10/100/1000 Megabit Ethernet controller is named "gbe/1".
+   */
+  const char* interface;
+
+  /** Receive packet queue size.  This specifies the maximum number
+      of ingress packets that can be received on this queue without
+      being retrieved by @ref netio_get_packet().  If the IPP's distribution
+      algorithm calls for a packet to be sent to this queue, and this
+      number of packets are already pending there, the new packet
+      will either be discarded, or sent to another tile registered
+      for the same queue_id (see @ref drops).  This value must
+      be at least ::NETIO_MIN_RECEIVE_PKTS, can always be at least
+      ::NETIO_MAX_RECEIVE_PKTS, and may be larger than that on certain
+      interfaces.
+   */
+  int num_receive_packets;
+
+  /** The queue ID being requested.  Legal values for this range from 0
+      to ::NETIO_MAX_QUEUE_ID, inclusive.  ::NETIO_MAX_QUEUE_ID is always
+      greater than or equal to the number of tiles; this allows one queue
+      for each tile, plus at least one additional queue.  Some applications
+      may wish to use the additional queue as a destination for unwanted
+      packets, since packets delivered to queues for which no tiles have
+      registered are discarded.
+   */
+  unsigned int queue_id;
+
+  /** Maximum number of small send buffers to be held in the local empty
+      buffer cache.  This specifies the size of the area which holds
+      empty small egress buffers requested from the IPP but not yet
+      retrieved via @ref netio_get_buffer().  This value must be greater
+      than zero if the application will ever use @ref netio_get_buffer()
+      to allocate empty small egress buffers; it may be no larger than
+      ::NETIO_MAX_SEND_BUFFERS.  See @ref epp for more details on empty
+      buffer caching.
+   */
+  int num_send_buffers_small_total;
+
+  /** Number of small send buffers to be preallocated at registration.
+      If this value is nonzero, the specified number of empty small egress
+      buffers will be requested from the IPP during the netio_input_register
+      operation; this may speed the execution of @ref netio_get_buffer().
+      This may be no larger than @ref num_send_buffers_small_total.  See @ref
+      epp for more details on empty buffer caching.
+   */
+  int num_send_buffers_small_prealloc;
+
+  /** Maximum number of large send buffers to be held in the local empty
+      buffer cache.  This specifies the size of the area which holds empty
+      large egress buffers requested from the IPP but not yet retrieved via
+      @ref netio_get_buffer().  This value must be greater than zero if the
+      application will ever use @ref netio_get_buffer() to allocate empty
+      large egress buffers; it may be no larger than ::NETIO_MAX_SEND_BUFFERS.
+      See @ref epp for more details on empty buffer caching.
+   */
+  int num_send_buffers_large_total;
+
+  /** Number of large send buffers to be preallocated at registration.
+      If this value is nonzero, the specified number of empty large egress
+      buffers will be requested from the IPP during the netio_input_register
+      operation; this may speed the execution of @ref netio_get_buffer().
+      This may be no larger than @ref num_send_buffers_large_total.  See @ref
+      epp for more details on empty buffer caching.
+   */
+  int num_send_buffers_large_prealloc;
+
+  /** Maximum number of jumbo send buffers to be held in the local empty
+      buffer cache.  This specifies the size of the area which holds empty
+      jumbo egress buffers requested from the IPP but not yet retrieved via
+      @ref netio_get_buffer().  This value must be greater than zero if the
+      application will ever use @ref netio_get_buffer() to allocate empty
+      jumbo egress buffers; it may be no larger than ::NETIO_MAX_SEND_BUFFERS.
+      See @ref epp for more details on empty buffer caching.
+   */
+  int num_send_buffers_jumbo_total;
+
+  /** Number of jumbo send buffers to be preallocated at registration.
+      If this value is nonzero, the specified number of empty jumbo egress
+      buffers will be requested from the IPP during the netio_input_register
+      operation; this may speed the execution of @ref netio_get_buffer().
+      This may be no larger than @ref num_send_buffers_jumbo_total.  See @ref
+      epp for more details on empty buffer caching.
+   */
+  int num_send_buffers_jumbo_prealloc;
+
+  /** Total packet buffer size.  This determines the total size, in bytes,
+      of the NetIO buffer pool.  Note that the maximum number of available
+      buffers of each size is determined during hypervisor configuration
+      (see the <em>System Programmer's Guide</em> for details); this just
+      influences how much host memory is allocated for those buffers.
+
+      The buffer pool is allocated from common memory, which will be
+      automatically initialized if needed.  If your buffer pool is larger
+      than 240 MB, you might need to explicitly call @c tmc_cmem_init(),
+      as described in the Application Libraries Reference Manual (UG227).
+
+      Packet buffers are currently allocated in chunks of 16 MB; this
+      value will be rounded up to the next larger multiple of 16 MB.
+      If this value is zero, a default of 32 MB will be used; this was
+      the value used by previous versions of NetIO.  Note that taking this
+      default also affects the placement of buffers on Linux NUMA nodes.
+      See @ref buffer_node_weights for an explanation of buffer placement.
+
+      In order to successfully allocate packet buffers, Linux must have
+      available huge pages on the relevant Linux NUMA nodes.  See the
+      <em>System Programmer's Guide</em> for information on configuring
+      huge page support in Linux.
+   */
+  uint64_t total_buffer_size;
+
+  /** Buffer placement weighting factors.
+
+      This array specifies the relative amount of buffering to place
+      on each of the available Linux NUMA nodes.  This array is
+      indexed by the NUMA node, and the values in the array are
+      proportional to the amount of buffer space to allocate on that
+      node.
+
+      If memory striping is enabled in the Hypervisor, then there is
+      only one logical NUMA node (node 0). In that case, NetIO will by
+      default ignore the suggested buffer node weights, and buffers
+      will be striped across the physical memory controllers. See
+      UG209 System Programmer's Guide for a description of the
+      hypervisor option that controls memory striping.
+
+      If memory striping is disabled, then there are up to four NUMA
+      nodes, corresponding to the four DDRAM controllers in the TILE
+      processor architecture.  See UG100 Tile Processor Architecture
+      Overview for a diagram showing the location of each of the DDRAM
+      controllers relative to the tile array.
+
+      For instance, if memory striping is disabled, the following
+      configuration strucure:
+
+      @code
+      netio_input_config_t config = {
+            .
+            .
+            .
+        .total_buffer_size = 4 * 16 * 1024 * 1024;
+        .buffer_node_weights = { 1, 0, 1, 0 },
+      },
+      @endcode
+
+      would result in 32 MB of buffers being placed on controller 0, and
+      32 MB on controller 2.  (Since buffers are allocated in units of
+      16 MB, some sets of weights will not be able to be matched exactly.)
+
+      For the weights to be effective, @ref total_buffer_size must be
+      nonzero.  If @ref total_buffer_size is zero, causing the default
+      32 MB of buffer space to be used, then any specified weights will
+      be ignored, and buffers will positioned as they were in previous
+      versions of NetIO:
+
+      - For xgbe/0 and gbe/0, 16 MB of buffers will be placed on controller 1,
+        and the other 16 MB will be placed on controller 2.
+
+      - For xgbe/1 and gbe/1, 16 MB of buffers will be placed on controller 2,
+        and the other 16 MB will be placed on controller 3.
+
+      If @ref total_buffer_size is nonzero, but all weights are zero,
+      then all buffer space will be allocated on Linux NUMA node zero.
+
+      By default, the specified buffer placement is treated as a hint;
+      if sufficient free memory is not available on the specified
+      controllers, the buffers will be allocated elsewhere.  However,
+      if the ::NETIO_STRICT_HOMING flag is specified in @ref flags, then a
+      failure to allocate buffer space exactly as requested will cause the
+      registration operation to fail with an error of ::NETIO_CANNOT_HOME.
+
+      Note that maximal network performance cannot be achieved with
+      only one memory controller.
+   */
+  uint8_t buffer_node_weights[NETIO_NUM_NODE_WEIGHTS];
+
+  /** Fixed virtual address for packet buffers.  Only valid when
+      ::NETIO_FIXED_BUFFER_VA is specified in @ref flags; see the
+      description of that flag for details.
+   */
+  void* fixed_buffer_va;
+
+  /**
+      Maximum number of outstanding send packet requests.  This value is
+      only relevant when an EPP is in use; it determines the number of
+      slots in the EPP's outgoing packet queue which this tile is allowed
+      to consume, and thus the number of packets which may be sent before
+      the sending tile must wait for an acknowledgment from the EPP.
+      Modifying this value is generally only helpful when using @ref
+      netio_send_packet_vector(), where it can help improve performance by
+      allowing a single vector send operation to process more packets.
+      Typically it is not specified, and the default, which divides the
+      outgoing packet slots evenly between all tiles on the chip, is used.
+
+      If a registration asks for more outgoing packet queue slots than are
+      available, ::NETIO_TOOMANY_XMIT will be returned.  The total number
+      of packet queue slots which are available for all tiles for each EPP
+      is subject to change, but is currently ::NETIO_TOTAL_SENDS_OUTSTANDING.
+
+
+      This value is ignored if ::NETIO_XMIT is not specified in flags.
+      If you want to specify a large value here for a specific tile, you are
+      advised to specify NETIO_NO_XMIT on other, non-transmitting tiles so
+      that they do not consume a default number of packet slots.  Any tile
+      transmitting is required to have at least ::NETIO_MIN_SENDS_OUTSTANDING
+      slots allocated to it; values less than that will be silently
+      increased by the NetIO library.
+   */
+  int num_sends_outstanding;
+}
+netio_input_config_t;
+
+
+/** Registration flags; used in the @ref netio_input_config_t structure.
+ * @addtogroup setup
+ */
+/** @{ */
+
+/** Fail a registration request if we can't put packet buffers
+    on the specified memory controllers. */
+#define NETIO_STRICT_HOMING   0x00000002
+
+/** This application expects no tags on its L2 headers. */
+#define NETIO_TAG_NONE        0x00000004
+
+/** This application expects Marvell extended tags on its L2 headers. */
+#define NETIO_TAG_MRVL        0x00000008
+
+/** This application expects Broadcom tags on its L2 headers. */
+#define NETIO_TAG_BRCM        0x00000010
+
+/** This registration may call routines which receive packets. */
+#define NETIO_RECV            0x00000020
+
+/** This registration may not call routines which receive packets. */
+#define NETIO_NO_RECV         0x00000040
+
+/** This registration may call routines which transmit packets. */
+#define NETIO_XMIT            0x00000080
+
+/** This registration may call routines which transmit packets with
+    checksum acceleration. */
+#define NETIO_XMIT_CSUM       0x00000100
+
+/** This registration may not call routines which transmit packets. */
+#define NETIO_NO_XMIT         0x00000200
+
+/** This registration wants NetIO buffers mapped at an application-specified
+    virtual address.
+
+    NetIO buffers are by default created by the TMC common memory facility,
+    which must be configured by a common ancestor of all processes sharing
+    a network interface.  When this flag is specified, NetIO buffers are
+    instead mapped at an address chosen by the application (and specified
+    in @ref netio_input_config_t::fixed_buffer_va).  This allows multiple
+    unrelated but cooperating processes to share a NetIO interface.
+    All processes sharing the same interface must specify this flag,
+    and all must specify the same fixed virtual address.
+
+    @ref netio_input_config_t::fixed_buffer_va must be a
+    multiple of 16 MB, and the packet buffers will occupy @ref
+    netio_input_config_t::total_buffer_size bytes of virtual address
+    space, beginning at that address.  If any of those virtual addresses
+    are currently occupied by other memory objects, like application or
+    shared library code or data, @ref netio_input_register() will return
+    ::NETIO_FAULT.  While it is impossible to provide a fixed_buffer_va
+    which will work for all applications, a good first guess might be to
+    use 0xb0000000 minus @ref netio_input_config_t::total_buffer_size.
+    If that fails, it might be helpful to consult the running application's
+    virtual address description file (/proc/<em>pid</em>/maps) to see
+    which regions of virtual address space are available.
+ */
+#define NETIO_FIXED_BUFFER_VA 0x00000400
+
+/** This registration call will not complete unless the network link
+    is up.  The process will wait several seconds for this to happen (the
+    precise interval is link-dependent), but if the link does not come up,
+    ::NETIO_LINK_DOWN will be returned.  This flag is the default if
+    ::NETIO_NOREQUIRE_LINK_UP is not specified.  Note that this flag by
+    itself does not request that the link be brought up; that can be done
+    with the ::NETIO_AUTO_LINK_UPDN or ::NETIO_AUTO_LINK_UP flags (the
+    latter is the default if no NETIO_AUTO_LINK_xxx flags are specified),
+    or by explicitly setting the link's desired state via netio_set().
+    If the link is not brought up by one of those methods, and this flag
+    is specified, the registration operation will return ::NETIO_LINK_DOWN.
+    This flag is ignored if it is specified along with ::NETIO_NO_XMIT and
+    ::NETIO_NO_RECV.  See @ref link for more information on link
+    management.
+ */
+#define NETIO_REQUIRE_LINK_UP    0x00000800
+
+/** This registration call will complete even if the network link is not up.
+    Whenever the link is not up, packets will not be sent or received:
+    netio_get_packet() will return ::NETIO_NOPKT once all queued packets
+    have been drained, and netio_send_packet() and similar routines will
+    return NETIO_QUEUE_FULL once the outgoing packet queue in the EPP
+    or the I/O shim is full.  See @ref link for more information on link
+    management.
+ */
+#define NETIO_NOREQUIRE_LINK_UP  0x00001000
+
+#ifndef __DOXYGEN__
+/*
+ * These are part of the implementation of the NETIO_AUTO_LINK_xxx flags,
+ * but should not be used directly by applications, and are thus not
+ * documented.
+ */
+#define _NETIO_AUTO_UP        0x00002000
+#define _NETIO_AUTO_DN        0x00004000
+#define _NETIO_AUTO_PRESENT   0x00008000
+#endif
+
+/** Set the desired state of the link to up, allowing any speeds which are
+    supported by the link hardware, as part of this registration operation.
+    Do not take down the link automatically.  This is the default if
+    no other NETIO_AUTO_LINK_xxx flags are specified.  This flag is ignored
+    if it is specified along with ::NETIO_NO_XMIT and ::NETIO_NO_RECV.
+    See @ref link for more information on link management.
+ */
+#define NETIO_AUTO_LINK_UP     (_NETIO_AUTO_PRESENT | _NETIO_AUTO_UP)
+
+/** Set the desired state of the link to up, allowing any speeds which are
+    supported by the link hardware, as part of this registration operation.
+    Set the desired state of the link to down the next time no tiles are
+    registered for packet reception or transmission.  This flag is ignored
+    if it is specified along with ::NETIO_NO_XMIT and ::NETIO_NO_RECV.
+    See @ref link for more information on link management.
+ */
+#define NETIO_AUTO_LINK_UPDN   (_NETIO_AUTO_PRESENT | _NETIO_AUTO_UP | \
+                                _NETIO_AUTO_DN)
+
+/** Set the desired state of the link to down the next time no tiles are
+    registered for packet reception or transmission.  This flag is ignored
+    if it is specified along with ::NETIO_NO_XMIT and ::NETIO_NO_RECV.
+    See @ref link for more information on link management.
+ */
+#define NETIO_AUTO_LINK_DN     (_NETIO_AUTO_PRESENT | _NETIO_AUTO_DN)
+
+/** Do not bring up the link automatically as part of this registration
+    operation.  Do not take down the link automatically.  This flag
+    is ignored if it is specified along with ::NETIO_NO_XMIT and
+    ::NETIO_NO_RECV.  See @ref link for more information on link management.
+  */
+#define NETIO_AUTO_LINK_NONE   _NETIO_AUTO_PRESENT
+
+
+/** Minimum number of receive packets. */
+#define NETIO_MIN_RECEIVE_PKTS            16
+
+/** Lower bound on the maximum number of receive packets; may be higher
+    than this on some interfaces. */
+#define NETIO_MAX_RECEIVE_PKTS           128
+
+/** Maximum number of send buffers, per packet size. */
+#define NETIO_MAX_SEND_BUFFERS            16
+
+/** Number of EPP queue slots, and thus outstanding sends, per EPP. */
+#define NETIO_TOTAL_SENDS_OUTSTANDING   2015
+
+/** Minimum number of EPP queue slots, and thus outstanding sends, per
+ *  transmitting tile. */
+#define NETIO_MIN_SENDS_OUTSTANDING       16
+
+
+/**@}*/
+
+#ifndef __DOXYGEN__
+
+/**
+ * An object for providing Ethernet packets to a process.
+ */
+struct __netio_queue_impl_t;
+
+/**
+ * An object for managing the user end of a NetIO queue.
+ */
+struct __netio_queue_user_impl_t;
+
+#endif /* !__DOXYGEN__ */
+
+
+/** A netio_queue_t describes a NetIO communications endpoint.
+ * @ingroup setup
+ */
+typedef struct
+{
+#ifdef __DOXYGEN__
+  uint8_t opaque[8];                 /**< This is an opaque structure. */
+#else
+  struct __netio_queue_impl_t* __system_part;    /**< The system part. */
+  struct __netio_queue_user_impl_t* __user_part; /**< The user part. */
+#ifdef _NETIO_PTHREAD
+  _netio_percpu_mutex_t lock;                    /**< Queue lock. */
+#endif
+#endif
+}
+netio_queue_t;
+
+
+/**
+ * @brief Packet send context.
+ *
+ * @ingroup egress
+ *
+ * Packet send context for use with netio_send_packet_prepare and _commit.
+ */
+typedef struct
+{
+#ifdef __DOXYGEN__
+  uint8_t opaque[44];   /**< This is an opaque structure. */
+#else
+  uint8_t flags;        /**< Defined below */
+  uint8_t datalen;      /**< Number of valid words pointed to by data. */
+  uint32_t request[9];  /**< Request to be sent to the EPP or shim.  Note
+                             that this is smaller than the 11-word maximum
+                             request size, since some constant values are
+                             not saved in the context. */
+  uint32_t *data;       /**< Data to be sent to the EPP or shim via IDN. */
+#endif
+}
+netio_send_pkt_context_t;
+
+
+#ifndef __DOXYGEN__
+#define SEND_PKT_CTX_USE_EPP   1  /**< We're sending to an EPP. */
+#define SEND_PKT_CTX_SEND_CSUM 2  /**< Request includes a checksum. */
+#endif
+
+/**
+ * @brief Packet vector entry.
+ *
+ * @ingroup egress
+ *
+ * This data structure is used with netio_send_packet_vector() to send multiple
+ * packets with one NetIO call.  The structure should be initialized by
+ * calling netio_pkt_vector_set(), rather than by setting the fields
+ * directly.
+ *
+ * This structure is guaranteed to be a power of two in size, no
+ * bigger than one L2 cache line, and to be aligned modulo its size.
+ */
+typedef struct
+#ifndef __DOXYGEN__
+__attribute__((aligned(8)))
+#endif
+{
+  /** Reserved for use by the user application.  When initialized with
+   *  the netio_set_pkt_vector_entry() function, this field is guaranteed
+   *  to be visible to readers only after all other fields are already
+   *  visible.  This way it can be used as a valid flag or generation
+   *  counter. */
+  uint8_t user_data;
+
+  /* Structure members below this point should not be accessed directly by
+   * applications, as they may change in the future. */
+
+  /** Low 8 bits of the packet address to send.  The high bits are
+   *  acquired from the 'handle' field. */
+  uint8_t buffer_address_low;
+
+  /** Number of bytes to transmit. */
+  uint16_t size;
+
+  /** The raw handle from a netio_pkt_t.  If this is NETIO_PKT_HANDLE_NONE,
+   *  this vector entry will be skipped and no packet will be transmitted. */
+  netio_pkt_handle_t handle;
+}
+netio_pkt_vector_entry_t;
+
+
+/**
+ * @brief Initialize fields in a packet vector entry.
+ *
+ * @ingroup egress
+ *
+ * @param[out] v Pointer to the vector entry to be initialized.
+ * @param[in] pkt Packet to be transmitted when the vector entry is passed to
+ *        netio_send_packet_vector().  Note that the packet's attributes
+ *        (e.g., its L2 offset and length) are captured at the time this
+ *        routine is called; subsequent changes in those attributes will not
+ *        be reflected in the packet which is actually transmitted.
+ *        Changes in the packet's contents, however, will be so reflected.
+ *        If this is NULL, no packet will be transmitted.
+ * @param[in] user_data User data to be set in the vector entry.
+ *        This function guarantees that the "user_data" field will become
+ *        visible to a reader only after all other fields have become visible.
+ *        This allows a structure in a ring buffer to be written and read
+ *        by a polling reader without any locks or other synchronization.
+ */
+static __inline void
+netio_pkt_vector_set(volatile netio_pkt_vector_entry_t* v, netio_pkt_t* pkt,
+                     uint8_t user_data)
+{
+  if (pkt)
+  {
+    if (NETIO_PKT_IS_MINIMAL(pkt))
+    {
+      netio_pkt_minimal_metadata_t* mmd =
+        (netio_pkt_minimal_metadata_t*) &pkt->__metadata;
+      v->buffer_address_low = (uintptr_t) NETIO_PKT_L2_DATA_MM(mmd, pkt) & 0xFF;
+      v->size = NETIO_PKT_L2_LENGTH_MM(mmd, pkt);
+    }
+    else
+    {
+      netio_pkt_metadata_t* mda = &pkt->__metadata;
+      v->buffer_address_low = (uintptr_t) NETIO_PKT_L2_DATA_M(mda, pkt) & 0xFF;
+      v->size = NETIO_PKT_L2_LENGTH_M(mda, pkt);
+    }
+    v->handle.word = pkt->__packet.word;
+  }
+  else
+  {
+    v->handle.word = 0;   /* Set handle to NETIO_PKT_HANDLE_NONE. */
+  }
+
+  __asm__("" : : : "memory");
+
+  v->user_data = user_data;
+}
+
+
+/**
+ * Flags and structures for @ref netio_get() and @ref netio_set().
+ * @ingroup config
+ */
+
+/** @{ */
+/** Parameter class; addr is a NETIO_PARAM_xxx value. */
+#define NETIO_PARAM       0
+/** Interface MAC address. This address is only valid with @ref netio_get().
+ *  The value is a 6-byte MAC address.  Depending upon the overall system
+ *  design, a MAC address may or may not be available for each interface. */
+#define NETIO_PARAM_MAC        0
+
+/** Determine whether to suspend output on the receipt of pause frames.
+ *  If the value is nonzero, the I/O shim will suspend output when a pause
+ *  frame is received.  If the value is zero, pause frames will be ignored. */
+#define NETIO_PARAM_PAUSE_IN   1
+
+/** Determine whether to send pause frames if the I/O shim packet FIFOs are
+ *  nearly full.  If the value is zero, pause frames are not sent.  If
+ *  the value is nonzero, it is the delay value which will be sent in any
+ *  pause frames which are output, in units of 512 bit times. */
+#define NETIO_PARAM_PAUSE_OUT  2
+
+/** Jumbo frame support.  The value is a 4-byte integer.  If the value is
+ *  nonzero, the MAC will accept frames of up to 10240 bytes.  If the value
+ *  is zero, the MAC will only accept frames of up to 1544 bytes. */
+#define NETIO_PARAM_JUMBO      3
+
+/** I/O shim's overflow statistics register.  The value is two 16-bit integers.
+ *  The first 16-bit value (or the low 16 bits, if the value is treated as a
+ *  32-bit number) is the count of packets which were completely dropped and
+ *  not delivered by the shim.  The second 16-bit value (or the high 16 bits,
+ *  if the value is treated as a 32-bit number) is the count of packets
+ *  which were truncated and thus only partially delivered by the shim.  This
+ *  register is automatically reset to zero after it has been read.
+ */
+#define NETIO_PARAM_OVERFLOW   4
+
+/** IPP statistics.  This address is only valid with @ref netio_get().  The
+ *  value is a netio_stat_t structure.  Unlike the I/O shim statistics, the
+ *  IPP statistics are not all reset to zero on read; see the description
+ *  of the netio_stat_t for details. */
+#define NETIO_PARAM_STAT 5
+
+/** Possible link state.  The value is a combination of "NETIO_LINK_xxx"
+ *  flags.  With @ref netio_get(), this will indicate which flags are
+ *  actually supported by the hardware.
+ *
+ *  For historical reasons, specifying this value to netio_set() will have
+ *  the same behavior as using ::NETIO_PARAM_LINK_CONFIG, but this usage is
+ *  discouraged.
+ */
+#define NETIO_PARAM_LINK_POSSIBLE_STATE 6
+
+/** Link configuration. The value is a combination of "NETIO_LINK_xxx" flags.
+ *  With @ref netio_set(), this will attempt to immediately bring up the
+ *  link using whichever of the requested flags are supported by the
+ *  hardware, or take down the link if the flags are zero; if this is
+ *  not possible, an error will be returned.  Many programs will want
+ *  to use ::NETIO_PARAM_LINK_DESIRED_STATE instead.
+ *
+ *  For historical reasons, specifying this value to netio_get() will
+ *  have the same behavior as using ::NETIO_PARAM_LINK_POSSIBLE_STATE,
+ *  but this usage is discouraged.
+ */
+#define NETIO_PARAM_LINK_CONFIG NETIO_PARAM_LINK_POSSIBLE_STATE
+
+/** Current link state. This address is only valid with @ref netio_get().
+ *  The value is zero or more of the "NETIO_LINK_xxx" flags, ORed together.
+ *  If the link is down, the value ANDed with NETIO_LINK_SPEED will be
+ *  zero; if the link is up, the value ANDed with NETIO_LINK_SPEED will
+ *  result in exactly one of the NETIO_LINK_xxx values, indicating the
+ *  current speed. */
+#define NETIO_PARAM_LINK_CURRENT_STATE 7
+
+/** Variant symbol for current state, retained for compatibility with
+ *  pre-MDE-2.1 programs. */
+#define NETIO_PARAM_LINK_STATUS NETIO_PARAM_LINK_CURRENT_STATE
+
+/** Packet Coherence protocol. This address is only valid with @ref netio_get().
+ *  The value is nonzero if the interface is configured for cache-coherent DMA.
+ */
+#define NETIO_PARAM_COHERENT 8
+
+/** Desired link state. The value is a conbination of "NETIO_LINK_xxx"
+ *  flags, which specify the desired state for the link.  With @ref
+ *  netio_set(), this will, in the background, attempt to bring up the link
+ *  using whichever of the requested flags are reasonable, or take down the
+ *  link if the flags are zero.  The actual link up or down operation may
+ *  happen after this call completes.  If the link state changes in the
+ *  future, the system will continue to try to get back to the desired link
+ *  state; for instance, if the link is brought up successfully, and then
+ *  the network cable is disconnected, the link will go down.  However, the
+ *  desired state of the link is still up, so if the cable is reconnected,
+ *  the link will be brought up again.
+ *
+ *  With @ref netio_get(), this will indicate the desired state for the
+ *  link, as set with a previous netio_set() call, or implicitly by a
+ *  netio_input_register() or netio_input_unregister() operation.  This may
+ *  not reflect the current state of the link; to get that, use
+ *  ::NETIO_PARAM_LINK_CURRENT_STATE. */
+#define NETIO_PARAM_LINK_DESIRED_STATE 9
+
+/** NetIO statistics structure.  Retrieved using the ::NETIO_PARAM_STAT
+ *  address passed to @ref netio_get(). */
+typedef struct
+{
+  /** Number of packets which have been received by the IPP and forwarded
+   *  to a tile's receive queue for processing.  This value wraps at its
+   *  maximum, and is not cleared upon read. */
+  uint32_t packets_received;
+
+  /** Number of packets which have been dropped by the IPP, because they could
+   *  not be received, or could not be forwarded to a tile.  The former happens
+   *  when the IPP does not have a free packet buffer of suitable size for an
+   *  incoming frame.  The latter happens when all potential destination tiles
+   *  for a packet, as defined by the group, bucket, and queue configuration,
+   *  have full receive queues.   This value wraps at its maximum, and is not
+   *  cleared upon read. */
+  uint32_t packets_dropped;
+
+  /*
+   * Note: the #defines after each of the following four one-byte values
+   * denote their location within the third word of the netio_stat_t.  They
+   * are intended for use only by the IPP implementation and are thus omitted
+   * from the Doxygen output.
+   */
+
+  /** Number of packets dropped because no worker was able to accept a new
+   *  packet.  This value saturates at its maximum, and is cleared upon
+   *  read. */
+  uint8_t drops_no_worker;
+#ifndef __DOXYGEN__
+#define NETIO_STAT_DROPS_NO_WORKER   0
+#endif
+
+  /** Number of packets dropped because no small buffers were available.
+   *  This value saturates at its maximum, and is cleared upon read. */
+  uint8_t drops_no_smallbuf;
+#ifndef __DOXYGEN__
+#define NETIO_STAT_DROPS_NO_SMALLBUF 1
+#endif
+
+  /** Number of packets dropped because no large buffers were available.
+   *  This value saturates at its maximum, and is cleared upon read. */
+  uint8_t drops_no_largebuf;
+#ifndef __DOXYGEN__
+#define NETIO_STAT_DROPS_NO_LARGEBUF 2
+#endif
+
+  /** Number of packets dropped because no jumbo buffers were available.
+   *  This value saturates at its maximum, and is cleared upon read. */
+  uint8_t drops_no_jumbobuf;
+#ifndef __DOXYGEN__
+#define NETIO_STAT_DROPS_NO_JUMBOBUF 3
+#endif
+}
+netio_stat_t;
+
+
+/** Link can run, should run, or is running at 10 Mbps. */
+#define NETIO_LINK_10M         0x01
+
+/** Link can run, should run, or is running at 100 Mbps. */
+#define NETIO_LINK_100M        0x02
+
+/** Link can run, should run, or is running at 1 Gbps. */
+#define NETIO_LINK_1G          0x04
+
+/** Link can run, should run, or is running at 10 Gbps. */
+#define NETIO_LINK_10G         0x08
+
+/** Link should run at the highest speed supported by the link and by
+ *  the device connected to the link.  Only usable as a value for
+ *  the link's desired state; never returned as a value for the current
+ *  or possible states. */
+#define NETIO_LINK_ANYSPEED    0x10
+
+/** All legal link speeds. */
+#define NETIO_LINK_SPEED  (NETIO_LINK_10M  | \
+                           NETIO_LINK_100M | \
+                           NETIO_LINK_1G   | \
+                           NETIO_LINK_10G  | \
+                           NETIO_LINK_ANYSPEED)
+
+
+/** MAC register class.  Addr is a register offset within the MAC.
+ *  Registers within the XGbE and GbE MACs are documented in the Tile
+ *  Processor I/O Device Guide (UG104). MAC registers start at address
+ *  0x4000, and do not include the MAC_INTERFACE registers. */
+#define NETIO_MAC             1
+
+/** MDIO register class (IEEE 802.3 clause 22 format).  Addr is the "addr"
+ *  member of a netio_mdio_addr_t structure. */
+#define NETIO_MDIO            2
+
+/** MDIO register class (IEEE 802.3 clause 45 format).  Addr is the "addr"
+ *  member of a netio_mdio_addr_t structure. */
+#define NETIO_MDIO_CLAUSE45   3
+
+/** NetIO MDIO address type.  Retrieved or provided using the ::NETIO_MDIO
+ *  address passed to @ref netio_get() or @ref netio_set(). */
+typedef union
+{
+  struct
+  {
+    unsigned int reg:16;  /**< MDIO register offset.  For clause 22 access,
+                               must be less than 32. */
+    unsigned int phy:5;   /**< Which MDIO PHY to access. */
+    unsigned int dev:5;   /**< Which MDIO device to access within that PHY.
+                               Applicable for clause 45 access only; ignored
+                               for clause 22 access. */
+  }
+  bits;                   /**< Container for bitfields. */
+  uint64_t addr;          /**< Value to pass to @ref netio_get() or
+                           *   @ref netio_set(). */
+}
+netio_mdio_addr_t;
+
+/** @} */
+
+#endif /* __NETIO_INTF_H__ */
diff --git a/arch/tile/kernel/Makefile b/arch/tile/kernel/Makefile
index 112b1e248f05..b4c8e8ec45dc 100644
--- a/arch/tile/kernel/Makefile
+++ b/arch/tile/kernel/Makefile
@@ -15,3 +15,4 @@ obj-$(CONFIG_SMP)		+= smpboot.o smp.o tlb.o
 obj-$(CONFIG_MODULES)		+= module.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
+obj-$(CONFIG_PCI)		+= pci.o
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
new file mode 100644
index 000000000000..a1ee25be9ad9
--- /dev/null
+++ b/arch/tile/kernel/pci.c
@@ -0,0 +1,621 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/capability.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+
+#include <asm/processor.h>
+#include <asm/sections.h>
+#include <asm/byteorder.h>
+#include <asm/hv_driver.h>
+#include <hv/drv_pcie_rc_intf.h>
+
+
+/*
+ * Initialization flow and process
+ * -------------------------------
+ *
+ * This files containes the routines to search for PCI buses,
+ * enumerate the buses, and configure any attached devices.
+ *
+ * There are two entry points here:
+ * 1) tile_pci_init
+ *    This sets up the pci_controller structs, and opens the
+ *    FDs to the hypervisor.  This is called from setup_arch() early
+ *    in the boot process.
+ * 2) pcibios_init
+ *    This probes the PCI bus(es) for any attached hardware.  It's
+ *    called by subsys_initcall.  All of the real work is done by the
+ *    generic Linux PCI layer.
+ *
+ */
+
+/*
+ * This flag tells if the platform is TILEmpower that needs
+ * special configuration for the PLX switch chip.
+ */
+int __write_once tile_plx_gen1;
+
+static struct pci_controller controllers[TILE_NUM_PCIE];
+static int num_controllers;
+
+static struct pci_ops tile_cfg_ops;
+
+
+/*
+ * We don't need to worry about the alignment of resources.
+ */
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
+			    resource_size_t size, resource_size_t align)
+{
+	return res->start;
+}
+EXPORT_SYMBOL(pcibios_align_resource);
+
+/*
+ * Open a FD to the hypervisor PCI device.
+ *
+ * controller_id is the controller number, config type is 0 or 1 for
+ * config0 or config1 operations.
+ */
+static int __init tile_pcie_open(int controller_id, int config_type)
+{
+	char filename[32];
+	int fd;
+
+	sprintf(filename, "pcie/%d/config%d", controller_id, config_type);
+
+	fd = hv_dev_open((HV_VirtAddr)filename, 0);
+
+	return fd;
+}
+
+
+/*
+ * Get the IRQ numbers from the HV and set up the handlers for them.
+ */
+static int __init tile_init_irqs(int controller_id,
+				 struct pci_controller *controller)
+{
+	char filename[32];
+	int fd;
+	int ret;
+	int x;
+	struct pcie_rc_config rc_config;
+
+	sprintf(filename, "pcie/%d/ctl", controller_id);
+	fd = hv_dev_open((HV_VirtAddr)filename, 0);
+	if (fd < 0) {
+		pr_err("PCI: hv_dev_open(%s) failed\n", filename);
+		return -1;
+	}
+	ret = hv_dev_pread(fd, 0, (HV_VirtAddr)(&rc_config),
+			   sizeof(rc_config), PCIE_RC_CONFIG_MASK_OFF);
+	hv_dev_close(fd);
+	if (ret != sizeof(rc_config)) {
+		pr_err("PCI: wanted %zd bytes, got %d\n",
+		       sizeof(rc_config), ret);
+		return -1;
+	}
+	/* Record irq_base so that we can map INTx to IRQ # later. */
+	controller->irq_base = rc_config.intr;
+
+	for (x = 0; x < 4; x++)
+		tile_irq_activate(rc_config.intr + x,
+				  TILE_IRQ_HW_CLEAR);
+
+	if (rc_config.plx_gen1)
+		controller->plx_gen1 = 1;
+
+	return 0;
+}
+
+/*
+ * First initialization entry point, called from setup_arch().
+ *
+ * Find valid controllers and fill in pci_controller structs for each
+ * of them.
+ *
+ * Returns the number of controllers discovered.
+ */
+int __init tile_pci_init(void)
+{
+	int i;
+
+	pr_info("PCI: Searching for controllers...\n");
+
+	/* Do any configuration we need before using the PCIe */
+
+	for (i = 0; i < TILE_NUM_PCIE; i++) {
+		int hv_cfg_fd0 = -1;
+		int hv_cfg_fd1 = -1;
+		int hv_mem_fd = -1;
+		char name[32];
+		struct pci_controller *controller;
+
+		/*
+		 * Open the fd to the HV.  If it fails then this
+		 * device doesn't exist.
+		 */
+		hv_cfg_fd0 = tile_pcie_open(i, 0);
+		if (hv_cfg_fd0 < 0)
+			continue;
+		hv_cfg_fd1 = tile_pcie_open(i, 1);
+		if (hv_cfg_fd1 < 0) {
+			pr_err("PCI: Couldn't open config fd to HV "
+			    "for controller %d\n", i);
+			goto err_cont;
+		}
+
+		sprintf(name, "pcie/%d/mem", i);
+		hv_mem_fd = hv_dev_open((HV_VirtAddr)name, 0);
+		if (hv_mem_fd < 0) {
+			pr_err("PCI: Could not open mem fd to HV!\n");
+			goto err_cont;
+		}
+
+		pr_info("PCI: Found PCI controller #%d\n", i);
+
+		controller = &controllers[num_controllers];
+
+		if (tile_init_irqs(i, controller)) {
+			pr_err("PCI: Could not initialize "
+			       "IRQs, aborting.\n");
+			goto err_cont;
+		}
+
+		controller->index = num_controllers;
+		controller->hv_cfg_fd[0] = hv_cfg_fd0;
+		controller->hv_cfg_fd[1] = hv_cfg_fd1;
+		controller->hv_mem_fd = hv_mem_fd;
+		controller->first_busno = 0;
+		controller->last_busno = 0xff;
+		controller->ops = &tile_cfg_ops;
+
+		num_controllers++;
+		continue;
+
+err_cont:
+		if (hv_cfg_fd0 >= 0)
+			hv_dev_close(hv_cfg_fd0);
+		if (hv_cfg_fd1 >= 0)
+			hv_dev_close(hv_cfg_fd1);
+		if (hv_mem_fd >= 0)
+			hv_dev_close(hv_mem_fd);
+		continue;
+	}
+
+	/*
+	 * Before using the PCIe, see if we need to do any platform-specific
+	 * configuration, such as the PLX switch Gen 1 issue on TILEmpower.
+	 */
+	for (i = 0; i < num_controllers; i++) {
+		struct pci_controller *controller = &controllers[i];
+
+		if (controller->plx_gen1)
+			tile_plx_gen1 = 1;
+	}
+
+	return num_controllers;
+}
+
+/*
+ * (pin - 1) converts from the PCI standard's [1:4] convention to
+ * a normal [0:3] range.
+ */
+static int tile_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	struct pci_controller *controller =
+		(struct pci_controller *)dev->sysdata;
+	return (pin - 1) + controller->irq_base;
+}
+
+
+static void __init fixup_read_and_payload_sizes(void)
+{
+	struct pci_dev *dev = NULL;
+	int smallest_max_payload = 0x1; /* Tile maxes out at 256 bytes. */
+	int max_read_size = 0x2; /* Limit to 512 byte reads. */
+	u16 new_values;
+
+	/* Scan for the smallest maximum payload size. */
+	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+		int pcie_caps_offset;
+		u32 devcap;
+		int max_payload;
+
+		pcie_caps_offset = pci_find_capability(dev, PCI_CAP_ID_EXP);
+		if (pcie_caps_offset == 0)
+			continue;
+
+		pci_read_config_dword(dev, pcie_caps_offset + PCI_EXP_DEVCAP,
+				      &devcap);
+		max_payload = devcap & PCI_EXP_DEVCAP_PAYLOAD;
+		if (max_payload < smallest_max_payload)
+			smallest_max_payload = max_payload;
+	}
+
+	/* Now, set the max_payload_size for all devices to that value. */
+	new_values = (max_read_size << 12) | (smallest_max_payload << 5);
+	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+		int pcie_caps_offset;
+		u16 devctl;
+
+		pcie_caps_offset = pci_find_capability(dev, PCI_CAP_ID_EXP);
+		if (pcie_caps_offset == 0)
+			continue;
+
+		pci_read_config_word(dev, pcie_caps_offset + PCI_EXP_DEVCTL,
+				     &devctl);
+		devctl &= ~(PCI_EXP_DEVCTL_PAYLOAD | PCI_EXP_DEVCTL_READRQ);
+		devctl |= new_values;
+		pci_write_config_word(dev, pcie_caps_offset + PCI_EXP_DEVCTL,
+				      devctl);
+	}
+}
+
+
+/*
+ * Second PCI initialization entry point, called by subsys_initcall.
+ *
+ * The controllers have been set up by the time we get here, by a call to
+ * tile_pci_init.
+ */
+static int __init pcibios_init(void)
+{
+	int i;
+
+	pr_info("PCI: Probing PCI hardware\n");
+
+	/*
+	 * Delay a bit in case devices aren't ready.  Some devices are
+	 * known to require at least 20ms here, but we use a more
+	 * conservative value.
+	 */
+	mdelay(250);
+
+	/* Scan all of the recorded PCI controllers.  */
+	for (i = 0; i < num_controllers; i++) {
+		struct pci_controller *controller = &controllers[i];
+		struct pci_bus *bus;
+
+		pr_info("PCI: initializing controller #%d\n", i);
+
+		/*
+		 * This comes from the generic Linux PCI driver.
+		 *
+		 * It reads the PCI tree for this bus into the Linux
+		 * data structures.
+		 *
+		 * This is inlined in linux/pci.h and calls into
+		 * pci_scan_bus_parented() in probe.c.
+		 */
+		bus = pci_scan_bus(0, controller->ops, controller);
+		controller->root_bus = bus;
+		controller->last_busno = bus->subordinate;
+
+	}
+
+	/* Do machine dependent PCI interrupt routing */
+	pci_fixup_irqs(pci_common_swizzle, tile_map_irq);
+
+	/*
+	 * This comes from the generic Linux PCI driver.
+	 *
+	 * It allocates all of the resources (I/O memory, etc)
+	 * associated with the devices read in above.
+	 */
+
+	pci_assign_unassigned_resources();
+
+	/* Configure the max_read_size and max_payload_size values. */
+	fixup_read_and_payload_sizes();
+
+	/* Record the I/O resources in the PCI controller structure. */
+	for (i = 0; i < num_controllers; i++) {
+		struct pci_bus *root_bus = controllers[i].root_bus;
+		struct pci_bus *next_bus;
+		struct pci_dev *dev;
+
+		list_for_each_entry(dev, &root_bus->devices, bus_list) {
+			/* Find the PCI host controller, ie. the 1st bridge. */
+			if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI &&
+				(PCI_SLOT(dev->devfn) == 0)) {
+				next_bus = dev->subordinate;
+				controllers[i].mem_resources[0] =
+					*next_bus->resource[0];
+				controllers[i].mem_resources[1] =
+					 *next_bus->resource[1];
+				controllers[i].mem_resources[2] =
+					 *next_bus->resource[2];
+
+				break;
+			}
+		}
+
+	}
+
+	return 0;
+}
+subsys_initcall(pcibios_init);
+
+/*
+ * No bus fixups needed.
+ */
+void __devinit pcibios_fixup_bus(struct pci_bus *bus)
+{
+	/* Nothing needs to be done. */
+}
+
+/*
+ * This can be called from the generic PCI layer, but doesn't need to
+ * do anything.
+ */
+char __devinit *pcibios_setup(char *str)
+{
+	/* Nothing needs to be done. */
+	return str;
+}
+
+/*
+ * This is called from the generic Linux layer.
+ */
+void __init pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
+
+/*
+ * Enable memory and/or address decoding, as appropriate, for the
+ * device described by the 'dev' struct.
+ *
+ * This is called from the generic PCI layer, and can be called
+ * for bridges or endpoints.
+ */
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+	u16 cmd, old_cmd;
+	u8 header_type;
+	int i;
+	struct resource *r;
+
+	pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type);
+
+	pci_read_config_word(dev, PCI_COMMAND, &cmd);
+	old_cmd = cmd;
+	if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+		/*
+		 * For bridges, we enable both memory and I/O decoding
+		 * in call cases.
+		 */
+		cmd |= PCI_COMMAND_IO;
+		cmd |= PCI_COMMAND_MEMORY;
+	} else {
+		/*
+		 * For endpoints, we enable memory and/or I/O decoding
+		 * only if they have a memory resource of that type.
+		 */
+		for (i = 0; i < 6; i++) {
+			r = &dev->resource[i];
+			if (r->flags & IORESOURCE_UNSET) {
+				pr_err("PCI: Device %s not available "
+				       "because of resource collisions\n",
+				       pci_name(dev));
+				return -EINVAL;
+			}
+			if (r->flags & IORESOURCE_IO)
+				cmd |= PCI_COMMAND_IO;
+			if (r->flags & IORESOURCE_MEM)
+				cmd |= PCI_COMMAND_MEMORY;
+		}
+	}
+
+	/*
+	 * We only write the command if it changed.
+	 */
+	if (cmd != old_cmd)
+		pci_write_config_word(dev, PCI_COMMAND, cmd);
+	return 0;
+}
+
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
+{
+	unsigned long start = pci_resource_start(dev, bar);
+	unsigned long len = pci_resource_len(dev, bar);
+	unsigned long flags = pci_resource_flags(dev, bar);
+
+	if (!len)
+		return NULL;
+	if (max && len > max)
+		len = max;
+
+	if (!(flags & IORESOURCE_MEM)) {
+		pr_info("PCI: Trying to map invalid resource %#lx\n", flags);
+		start = 0;
+	}
+
+	return (void __iomem *)start;
+}
+EXPORT_SYMBOL(pci_iomap);
+
+
+/****************************************************************
+ *
+ * Tile PCI config space read/write routines
+ *
+ ****************************************************************/
+
+/*
+ * These are the normal read and write ops
+ * These are expanded with macros from  pci_bus_read_config_byte() etc.
+ *
+ * devfn is the combined PCI slot & function.
+ *
+ * offset is in bytes, from the start of config space for the
+ * specified bus & slot.
+ */
+
+static int __devinit tile_cfg_read(struct pci_bus *bus,
+				   unsigned int devfn,
+				   int offset,
+				   int size,
+				   u32 *val)
+{
+	struct pci_controller *controller = bus->sysdata;
+	int busnum = bus->number & 0xff;
+	int slot = (devfn >> 3) & 0x1f;
+	int function = devfn & 0x7;
+	u32 addr;
+	int config_mode = 1;
+
+	/*
+	 * There is no bridge between the Tile and bus 0, so we
+	 * use config0 to talk to bus 0.
+	 *
+	 * If we're talking to a bus other than zero then we
+	 * must have found a bridge.
+	 */
+	if (busnum == 0) {
+		/*
+		 * We fake an empty slot for (busnum == 0) && (slot > 0),
+		 * since there is only one slot on bus 0.
+		 */
+		if (slot) {
+			*val = 0xFFFFFFFF;
+			return 0;
+		}
+		config_mode = 0;
+	}
+
+	addr = busnum << 20;		/* Bus in 27:20 */
+	addr |= slot << 15;		/* Slot (device) in 19:15 */
+	addr |= function << 12;		/* Function is in 14:12 */
+	addr |= (offset & 0xFFF);	/* byte address in 0:11 */
+
+	return hv_dev_pread(controller->hv_cfg_fd[config_mode], 0,
+			    (HV_VirtAddr)(val), size, addr);
+}
+
+
+/*
+ * See tile_cfg_read() for relevent comments.
+ * Note that "val" is the value to write, not a pointer to that value.
+ */
+static int __devinit tile_cfg_write(struct pci_bus *bus,
+				    unsigned int devfn,
+				    int offset,
+				    int size,
+				    u32 val)
+{
+	struct pci_controller *controller = bus->sysdata;
+	int busnum = bus->number & 0xff;
+	int slot = (devfn >> 3) & 0x1f;
+	int function = devfn & 0x7;
+	u32 addr;
+	int config_mode = 1;
+	HV_VirtAddr valp = (HV_VirtAddr)&val;
+
+	/*
+	 * For bus 0 slot 0 we use config 0 accesses.
+	 */
+	if (busnum == 0) {
+		/*
+		 * We fake an empty slot for (busnum == 0) && (slot > 0),
+		 * since there is only one slot on bus 0.
+		 */
+		if (slot)
+			return 0;
+		config_mode = 0;
+	}
+
+	addr = busnum << 20;		/* Bus in 27:20 */
+	addr |= slot << 15;		/* Slot (device) in 19:15 */
+	addr |= function << 12;		/* Function is in 14:12 */
+	addr |= (offset & 0xFFF);	/* byte address in 0:11 */
+
+#ifdef __BIG_ENDIAN
+	/* Point to the correct part of the 32-bit "val". */
+	valp += 4 - size;
+#endif
+
+	return hv_dev_pwrite(controller->hv_cfg_fd[config_mode], 0,
+			     valp, size, addr);
+}
+
+
+static struct pci_ops tile_cfg_ops = {
+	.read =         tile_cfg_read,
+	.write =        tile_cfg_write,
+};
+
+
+/*
+ * In the following, each PCI controller's mem_resources[1]
+ * represents its (non-prefetchable) PCI memory resource.
+ * mem_resources[0] and mem_resources[2] refer to its PCI I/O and
+ * prefetchable PCI memory resources, respectively.
+ * For more details, see pci_setup_bridge() in setup-bus.c.
+ * By comparing the target PCI memory address against the
+ * end address of controller 0, we can determine the controller
+ * that should accept the PCI memory access.
+ */
+#define TILE_READ(size, type)						\
+type _tile_read##size(unsigned long addr)				\
+{									\
+	type val;							\
+	int idx = 0;							\
+	if (addr > controllers[0].mem_resources[1].end &&		\
+	    addr > controllers[0].mem_resources[2].end)			\
+		idx = 1;                                                \
+	if (hv_dev_pread(controllers[idx].hv_mem_fd, 0,			\
+			 (HV_VirtAddr)(&val), sizeof(type), addr))	\
+		pr_err("PCI: read %zd bytes at 0x%lX failed\n",		\
+		       sizeof(type), addr);				\
+	return val;							\
+}									\
+EXPORT_SYMBOL(_tile_read##size)
+
+TILE_READ(b, u8);
+TILE_READ(w, u16);
+TILE_READ(l, u32);
+TILE_READ(q, u64);
+
+#define TILE_WRITE(size, type)						\
+void _tile_write##size(type val, unsigned long addr)			\
+{									\
+	int idx = 0;							\
+	if (addr > controllers[0].mem_resources[1].end &&		\
+	    addr > controllers[0].mem_resources[2].end)			\
+		idx = 1;                                                \
+	if (hv_dev_pwrite(controllers[idx].hv_mem_fd, 0,		\
+			  (HV_VirtAddr)(&val), sizeof(type), addr))	\
+		pr_err("PCI: write %zd bytes at 0x%lX failed\n",	\
+		       sizeof(type), addr);				\
+}									\
+EXPORT_SYMBOL(_tile_write##size)
+
+TILE_WRITE(b, u8);
+TILE_WRITE(w, u16);
+TILE_WRITE(l, u32);
+TILE_WRITE(q, u64);
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index fb0b3cbeae14..f18573643ed1 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -840,7 +840,7 @@ static int __init topology_init(void)
 	for_each_online_node(i)
 		register_one_node(i);
 
-	for_each_present_cpu(i)
+	for (i = 0; i < smp_height * smp_width; ++i)
 		register_cpu(&cpu_devices[i], i);
 
 	return 0;
diff --git a/arch/tile/lib/memchr_32.c b/arch/tile/lib/memchr_32.c
index 6235283b4859..cc3d9badf030 100644
--- a/arch/tile/lib/memchr_32.c
+++ b/arch/tile/lib/memchr_32.c
@@ -18,12 +18,24 @@
 
 void *memchr(const void *s, int c, size_t n)
 {
+	const uint32_t *last_word_ptr;
+	const uint32_t *p;
+	const char *last_byte_ptr;
+	uintptr_t s_int;
+	uint32_t goal, before_mask, v, bits;
+	char *ret;
+
+	if (__builtin_expect(n == 0, 0)) {
+		/* Don't dereference any memory if the array is empty. */
+		return NULL;
+	}
+
 	/* Get an aligned pointer. */
-	const uintptr_t s_int = (uintptr_t) s;
-	const uint32_t *p = (const uint32_t *)(s_int & -4);
+	s_int = (uintptr_t) s;
+	p = (const uint32_t *)(s_int & -4);
 
 	/* Create four copies of the byte for which we are looking. */
-	const uint32_t goal = 0x01010101 * (uint8_t) c;
+	goal = 0x01010101 * (uint8_t) c;
 
 	/* Read the first word, but munge it so that bytes before the array
 	 * will not match goal.
@@ -31,23 +43,14 @@ void *memchr(const void *s, int c, size_t n)
 	 * Note that this shift count expression works because we know
 	 * shift counts are taken mod 32.
 	 */
-	const uint32_t before_mask = (1 << (s_int << 3)) - 1;
-	uint32_t v = (*p | before_mask) ^ (goal & before_mask);
+	before_mask = (1 << (s_int << 3)) - 1;
+	v = (*p | before_mask) ^ (goal & before_mask);
 
 	/* Compute the address of the last byte. */
-	const char *const last_byte_ptr = (const char *)s + n - 1;
+	last_byte_ptr = (const char *)s + n - 1;
 
 	/* Compute the address of the word containing the last byte. */
-	const uint32_t *const last_word_ptr =
-	    (const uint32_t *)((uintptr_t) last_byte_ptr & -4);
-
-	uint32_t bits;
-	char *ret;
-
-	if (__builtin_expect(n == 0, 0)) {
-		/* Don't dereference any memory if the array is empty. */
-		return NULL;
-	}
+	last_word_ptr = (const uint32_t *)((uintptr_t) last_byte_ptr & -4);
 
 	while ((bits = __insn_seqb(v, goal)) == 0) {
 		if (__builtin_expect(p == last_word_ptr, 0)) {
diff --git a/arch/tile/lib/spinlock_32.c b/arch/tile/lib/spinlock_32.c
index 485e24d62c6b..5cd1c4004eca 100644
--- a/arch/tile/lib/spinlock_32.c
+++ b/arch/tile/lib/spinlock_32.c
@@ -167,23 +167,30 @@ void arch_write_lock_slow(arch_rwlock_t *rwlock, u32 val)
 	 * when we compare them.
 	 */
 	u32 my_ticket_;
-
-	/* Take out the next ticket; this will also stop would-be readers. */
-	if (val & 1)
-		val = get_rwlock(rwlock);
-	rwlock->lock = __insn_addb(val, 1 << WR_NEXT_SHIFT);
-
-	/* Extract my ticket value from the original word. */
-	my_ticket_ = val >> WR_NEXT_SHIFT;
+	u32 iterations = 0;
 
 	/*
-	 * Wait until the "current" field matches our ticket, and
-	 * there are no remaining readers.
+	 * Wait until there are no readers, then bump up the next
+	 * field and capture the ticket value.
 	 */
+	for (;;) {
+		if (!(val & 1)) {
+			if ((val >> RD_COUNT_SHIFT) == 0)
+				break;
+			rwlock->lock = val;
+		}
+		delay_backoff(iterations++);
+		val = __insn_tns((int *)&rwlock->lock);
+	}
+
+	/* Take out the next ticket and extract my ticket value. */
+	rwlock->lock = __insn_addb(val, 1 << WR_NEXT_SHIFT);
+	my_ticket_ = val >> WR_NEXT_SHIFT;
+
+	/* Wait until the "current" field matches our ticket. */
 	for (;;) {
 		u32 curr_ = val >> WR_CURR_SHIFT;
-		u32 readers = val >> RD_COUNT_SHIFT;
-		u32 delta = ((my_ticket_ - curr_) & WR_MASK) + !!readers;
+		u32 delta = ((my_ticket_ - curr_) & WR_MASK);
 		if (likely(delta == 0))
 			break;
 
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e8327686d3c5..e330da21b84f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -21,7 +21,7 @@ config X86
 	select HAVE_UNSTABLE_SCHED_CLOCK
 	select HAVE_IDE
 	select HAVE_OPROFILE
-	select HAVE_PERF_EVENTS if (!M386 && !M486)
+	select HAVE_PERF_EVENTS
 	select HAVE_IRQ_WORK
 	select HAVE_IOREMAP_PROT
 	select HAVE_KPROBES
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 3ea3dc487047..6b89f5e86021 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -128,7 +128,7 @@
 #define FAM10H_MMIO_CONF_ENABLE		(1<<0)
 #define FAM10H_MMIO_CONF_BUSRANGE_MASK	0xf
 #define FAM10H_MMIO_CONF_BUSRANGE_SHIFT 2
-#define FAM10H_MMIO_CONF_BASE_MASK	0xfffffff
+#define FAM10H_MMIO_CONF_BASE_MASK	0xfffffffULL
 #define FAM10H_MMIO_CONF_BASE_SHIFT	20
 #define MSR_FAM10H_NODE_ID		0xc001100c
 
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index 18e3b8a8709f..ef9975812c77 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -824,27 +824,27 @@ static __always_inline void arch_spin_unlock(struct arch_spinlock *lock)
 #define __PV_IS_CALLEE_SAVE(func)			\
 	((struct paravirt_callee_save) { func })
 
-static inline unsigned long arch_local_save_flags(void)
+static inline notrace unsigned long arch_local_save_flags(void)
 {
 	return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl);
 }
 
-static inline void arch_local_irq_restore(unsigned long f)
+static inline notrace void arch_local_irq_restore(unsigned long f)
 {
 	PVOP_VCALLEE1(pv_irq_ops.restore_fl, f);
 }
 
-static inline void arch_local_irq_disable(void)
+static inline notrace void arch_local_irq_disable(void)
 {
 	PVOP_VCALLEE0(pv_irq_ops.irq_disable);
 }
 
-static inline void arch_local_irq_enable(void)
+static inline notrace void arch_local_irq_enable(void)
 {
 	PVOP_VCALLEE0(pv_irq_ops.irq_enable);
 }
 
-static inline unsigned long arch_local_irq_save(void)
+static inline notrace unsigned long arch_local_irq_save(void)
 {
 	unsigned long f;
 
diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index e969f691cbfd..a501741c2335 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -199,6 +199,8 @@ union uvh_apicid {
 #define UVH_APICID		0x002D0E00L
 #define UV_APIC_PNODE_SHIFT	6
 
+#define UV_APICID_HIBIT_MASK	0xffff0000
+
 /* Local Bus from cpu's perspective */
 #define LOCAL_BUS_BASE		0x1c00000
 #define LOCAL_BUS_SIZE		(4 * 1024 * 1024)
@@ -491,8 +493,10 @@ static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
 	}
 }
 
+extern unsigned int uv_apicid_hibits;
 static unsigned long uv_hub_ipi_value(int apicid, int vector, int mode)
 {
+	apicid |= uv_apicid_hibits;
 	return (1UL << UVH_IPI_INT_SEND_SHFT) |
 			((apicid) << UVH_IPI_INT_APIC_ID_SHFT) |
 			(mode << UVH_IPI_INT_DELIVERY_MODE_SHFT) |
diff --git a/arch/x86/include/asm/uv/uv_mmrs.h b/arch/x86/include/asm/uv/uv_mmrs.h
index 6d90adf4428a..20cafeac7455 100644
--- a/arch/x86/include/asm/uv/uv_mmrs.h
+++ b/arch/x86/include/asm/uv/uv_mmrs.h
@@ -5,7 +5,7 @@
  *
  * SGI UV MMR definitions
  *
- * Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2007-2010 Silicon Graphics, Inc. All rights reserved.
  */
 
 #ifndef _ASM_X86_UV_UV_MMRS_H
@@ -753,6 +753,23 @@ union uvh_lb_bau_sb_descriptor_base_u {
     } s;
 };
 
+/* ========================================================================= */
+/*                   UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK                     */
+/* ========================================================================= */
+#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK 0x320130UL
+#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK_32 0x009f0
+
+#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK_BIT_ENABLES_SHFT 0
+#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK_BIT_ENABLES_MASK 0x00000000ffffffffUL
+
+union uvh_lb_target_physical_apic_id_mask_u {
+	unsigned long v;
+	struct uvh_lb_target_physical_apic_id_mask_s {
+		unsigned long bit_enables : 32;  /* RW */
+		unsigned long rsvd_32_63  : 32;  /*    */
+	} s;
+};
+
 /* ========================================================================= */
 /*                               UVH_NODE_ID                                 */
 /* ========================================================================= */
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
index cefd6942f0e9..62f6e1e55b90 100644
--- a/arch/x86/kernel/apic/hw_nmi.c
+++ b/arch/x86/kernel/apic/hw_nmi.c
@@ -17,15 +17,16 @@
 #include <linux/nmi.h>
 #include <linux/module.h>
 
-/* For reliability, we're prepared to waste bits here. */
-static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
-
 u64 hw_nmi_get_sample_period(void)
 {
 	return (u64)(cpu_khz) * 1000 * 60;
 }
 
 #ifdef ARCH_HAS_NMI_WATCHDOG
+
+/* For reliability, we're prepared to waste bits here. */
+static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
+
 void arch_trigger_all_cpu_backtrace(void)
 {
 	int i;
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 194539aea175..c1c52c341f40 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -44,6 +44,8 @@ static u64 gru_start_paddr, gru_end_paddr;
 static union uvh_apicid uvh_apicid;
 int uv_min_hub_revision_id;
 EXPORT_SYMBOL_GPL(uv_min_hub_revision_id);
+unsigned int uv_apicid_hibits;
+EXPORT_SYMBOL_GPL(uv_apicid_hibits);
 static DEFINE_SPINLOCK(uv_nmi_lock);
 
 static inline bool is_GRU_range(u64 start, u64 end)
@@ -85,6 +87,23 @@ static void __init early_get_apic_pnode_shift(void)
 		uvh_apicid.s.pnode_shift = UV_APIC_PNODE_SHIFT;
 }
 
+/*
+ * Add an extra bit as dictated by bios to the destination apicid of
+ * interrupts potentially passing through the UV HUB.  This prevents
+ * a deadlock between interrupts and IO port operations.
+ */
+static void __init uv_set_apicid_hibit(void)
+{
+	union uvh_lb_target_physical_apic_id_mask_u apicid_mask;
+	unsigned long *mmr;
+
+	mmr = early_ioremap(UV_LOCAL_MMR_BASE |
+		UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK, sizeof(*mmr));
+	apicid_mask.v = *mmr;
+	early_iounmap(mmr, sizeof(*mmr));
+	uv_apicid_hibits = apicid_mask.s.bit_enables & UV_APICID_HIBIT_MASK;
+}
+
 static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
 	int nodeid;
@@ -102,6 +121,7 @@ static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 			__get_cpu_var(x2apic_extra_bits) =
 				nodeid << (uvh_apicid.s.pnode_shift - 1);
 			uv_system_type = UV_NON_UNIQUE_APIC;
+			uv_set_apicid_hibit();
 			return 1;
 		}
 	}
@@ -155,6 +175,7 @@ static int __cpuinit uv_wakeup_secondary(int phys_apicid, unsigned long start_ri
 	int pnode;
 
 	pnode = uv_apicid_to_pnode(phys_apicid);
+	phys_apicid |= uv_apicid_hibits;
 	val = (1UL << UVH_IPI_INT_SEND_SHFT) |
 	    (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
 	    ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
@@ -236,7 +257,7 @@ static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
 	int cpu = cpumask_first(cpumask);
 
 	if ((unsigned)cpu < nr_cpu_ids)
-		return per_cpu(x86_cpu_to_apicid, cpu);
+		return per_cpu(x86_cpu_to_apicid, cpu) | uv_apicid_hibits;
 	else
 		return BAD_APICID;
 }
@@ -255,7 +276,7 @@ uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
 		if (cpumask_test_cpu(cpu, cpu_online_mask))
 			break;
 	}
-	return per_cpu(x86_cpu_to_apicid, cpu);
+	return per_cpu(x86_cpu_to_apicid, cpu) | uv_apicid_hibits;
 }
 
 static unsigned int x2apic_get_apic_id(unsigned long x)
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index ed6310183efb..6d75b9145b13 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -381,6 +381,20 @@ static void release_pmc_hardware(void) {}
 
 #endif
 
+static bool check_hw_exists(void)
+{
+	u64 val, val_new = 0;
+	int ret = 0;
+
+	val = 0xabcdUL;
+	ret |= checking_wrmsrl(x86_pmu.perfctr, val);
+	ret |= rdmsrl_safe(x86_pmu.perfctr, &val_new);
+	if (ret || val != val_new)
+		return false;
+
+	return true;
+}
+
 static void reserve_ds_buffers(void);
 static void release_ds_buffers(void);
 
@@ -1372,6 +1386,12 @@ void __init init_hw_perf_events(void)
 
 	pmu_check_apic();
 
+	/* sanity check that the hardware exists or is emulated */
+	if (!check_hw_exists()) {
+		pr_cont("Broken PMU hardware detected, software events only.\n");
+		return;
+	}
+
 	pr_cont("%s PMU driver.\n", x86_pmu.name);
 
 	if (x86_pmu.quirks)
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 59e175e89599..591e60104278 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -395,7 +395,7 @@ sysenter_past_esp:
 	 * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
 	 * pushed above; +8 corresponds to copy_thread's esp0 setting.
 	 */
-	pushl_cfi (TI_sysenter_return-THREAD_SIZE_asm+8+4*4)(%esp)
+	pushl_cfi ((TI_sysenter_return)-THREAD_SIZE_asm+8+4*4)(%esp)
 	CFI_REL_OFFSET eip, 0
 
 	pushl_cfi %eax
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index fe2690d71c0c..e3ba417e8697 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -295,6 +295,7 @@ ENDPROC(native_usergs_sysret64)
 	.endm
 
 /* save partial stack frame */
+	.pushsection .kprobes.text, "ax"
 ENTRY(save_args)
 	XCPT_FRAME
 	cld
@@ -334,6 +335,7 @@ ENTRY(save_args)
 	ret
 	CFI_ENDPROC
 END(save_args)
+	.popsection
 
 ENTRY(save_rest)
 	PARTIAL_FRAME 1 REST_SKIP+8
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index ff15c9dcc25d..42c594254507 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -433,6 +433,10 @@ static int __kprobes hw_breakpoint_handler(struct die_args *args)
 	dr6_p = (unsigned long *)ERR_PTR(args->err);
 	dr6 = *dr6_p;
 
+	/* If it's a single step, TRAP bits are random */
+	if (dr6 & DR_STEP)
+		return NOTIFY_DONE;
+
 	/* Do an early return if no trap bits are set in DR6 */
 	if ((dr6 & DR_TRAP_BITS) == 0)
 		return NOTIFY_DONE;
diff --git a/arch/x86/kernel/mmconf-fam10h_64.c b/arch/x86/kernel/mmconf-fam10h_64.c
index 6da143c2a6b8..ac861b8348e2 100644
--- a/arch/x86/kernel/mmconf-fam10h_64.c
+++ b/arch/x86/kernel/mmconf-fam10h_64.c
@@ -25,7 +25,6 @@ struct pci_hostbridge_probe {
 };
 
 static u64 __cpuinitdata fam10h_pci_mmconf_base;
-static int __cpuinitdata fam10h_pci_mmconf_base_status;
 
 static struct pci_hostbridge_probe pci_probes[] __cpuinitdata = {
 	{ 0, 0x18, PCI_VENDOR_ID_AMD, 0x1200 },
@@ -44,10 +43,12 @@ static int __cpuinit cmp_range(const void *x1, const void *x2)
 	return start1 - start2;
 }
 
-/*[47:0] */
-/* need to avoid (0xfd<<32) and (0xfe<<32), ht used space */
+#define MMCONF_UNIT (1ULL << FAM10H_MMIO_CONF_BASE_SHIFT)
+#define MMCONF_MASK (~(MMCONF_UNIT - 1))
+#define MMCONF_SIZE (MMCONF_UNIT << 8)
+/* need to avoid (0xfd<<32), (0xfe<<32), and (0xff<<32), ht used space */
 #define FAM10H_PCI_MMCONF_BASE (0xfcULL<<32)
-#define BASE_VALID(b) ((b != (0xfdULL << 32)) && (b != (0xfeULL << 32)))
+#define BASE_VALID(b) ((b) + MMCONF_SIZE <= (0xfdULL<<32) || (b) >= (1ULL<<40))
 static void __cpuinit get_fam10h_pci_mmconf_base(void)
 {
 	int i;
@@ -64,12 +65,11 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
 	struct range range[8];
 
 	/* only try to get setting from BSP */
-	/* -1 or 1 */
-	if (fam10h_pci_mmconf_base_status)
+	if (fam10h_pci_mmconf_base)
 		return;
 
 	if (!early_pci_allowed())
-		goto fail;
+		return;
 
 	found = 0;
 	for (i = 0; i < ARRAY_SIZE(pci_probes); i++) {
@@ -91,7 +91,7 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
 	}
 
 	if (!found)
-		goto fail;
+		return;
 
 	/* SYS_CFG */
 	address = MSR_K8_SYSCFG;
@@ -99,16 +99,16 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
 
 	/* TOP_MEM2 is not enabled? */
 	if (!(val & (1<<21))) {
-		tom2 = 0;
+		tom2 = 1ULL << 32;
 	} else {
 		/* TOP_MEM2 */
 		address = MSR_K8_TOP_MEM2;
 		rdmsrl(address, val);
-		tom2 = val & (0xffffULL<<32);
+		tom2 = max(val & 0xffffff800000ULL, 1ULL << 32);
 	}
 
 	if (base <= tom2)
-		base = tom2 + (1ULL<<32);
+		base = (tom2 + 2 * MMCONF_UNIT - 1) & MMCONF_MASK;
 
 	/*
 	 * need to check if the range is in the high mmio range that is
@@ -123,11 +123,11 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
 		if (!(reg & 3))
 			continue;
 
-		start = (((u64)reg) << 8) & (0xffULL << 32); /* 39:16 on 31:8*/
+		start = (u64)(reg & 0xffffff00) << 8; /* 39:16 on 31:8*/
 		reg = read_pci_config(bus, slot, 1, 0x84 + (i << 3));
-		end = (((u64)reg) << 8) & (0xffULL << 32); /* 39:16 on 31:8*/
+		end = ((u64)(reg & 0xffffff00) << 8) | 0xffff; /* 39:16 on 31:8*/
 
-		if (!end)
+		if (end < tom2)
 			continue;
 
 		range[hi_mmio_num].start = start;
@@ -143,32 +143,27 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
 
 	if (range[hi_mmio_num - 1].end < base)
 		goto out;
-	if (range[0].start > base)
+	if (range[0].start > base + MMCONF_SIZE)
 		goto out;
 
 	/* need to find one window */
-	base = range[0].start - (1ULL << 32);
+	base = (range[0].start & MMCONF_MASK) - MMCONF_UNIT;
 	if ((base > tom2) && BASE_VALID(base))
 		goto out;
-	base = range[hi_mmio_num - 1].end + (1ULL << 32);
-	if ((base > tom2) && BASE_VALID(base))
+	base = (range[hi_mmio_num - 1].end + MMCONF_UNIT) & MMCONF_MASK;
+	if (BASE_VALID(base))
 		goto out;
 	/* need to find window between ranges */
-	if (hi_mmio_num > 1)
-	for (i = 0; i < hi_mmio_num - 1; i++) {
-		if (range[i + 1].start > (range[i].end + (1ULL << 32))) {
-			base = range[i].end + (1ULL << 32);
-			if ((base > tom2) && BASE_VALID(base))
-				goto out;
-		}
+	for (i = 1; i < hi_mmio_num; i++) {
+		base = (range[i - 1].end + MMCONF_UNIT) & MMCONF_MASK;
+		val = range[i].start & MMCONF_MASK;
+		if (val >= base + MMCONF_SIZE && BASE_VALID(base))
+			goto out;
 	}
-
-fail:
-	fam10h_pci_mmconf_base_status = -1;
 	return;
+
 out:
 	fam10h_pci_mmconf_base = base;
-	fam10h_pci_mmconf_base_status = 1;
 }
 
 void __cpuinit fam10h_check_enable_mmcfg(void)
@@ -190,11 +185,10 @@ void __cpuinit fam10h_check_enable_mmcfg(void)
 
 		/* only trust the one handle 256 buses, if acpi=off */
 		if (!acpi_pci_disabled || busnbits >= 8) {
-			u64 base;
-			base = val & (0xffffULL << 32);
-			if (fam10h_pci_mmconf_base_status <= 0) {
+			u64 base = val & MMCONF_MASK;
+
+			if (!fam10h_pci_mmconf_base) {
 				fam10h_pci_mmconf_base = base;
-				fam10h_pci_mmconf_base_status = 1;
 				return;
 			} else if (fam10h_pci_mmconf_base ==  base)
 				return;
@@ -206,8 +200,10 @@ void __cpuinit fam10h_check_enable_mmcfg(void)
 	 * with 256 buses
 	 */
 	get_fam10h_pci_mmconf_base();
-	if (fam10h_pci_mmconf_base_status <= 0)
+	if (!fam10h_pci_mmconf_base) {
+		pci_probe &= ~PCI_CHECK_ENABLE_AMD_MMCONF;
 		return;
+	}
 
 	printk(KERN_INFO "Enable MMCONFIG on AMD Family 10h\n");
 	val &= ~((FAM10H_MMIO_CONF_BASE_MASK<<FAM10H_MMIO_CONF_BASE_SHIFT) |
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 12cdbb17ad18..6acc724d5d8f 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -223,7 +223,7 @@ void native_flush_tlb_others(const struct cpumask *cpumask,
 
 static void __cpuinit calculate_tlb_offset(void)
 {
-	int cpu, node, nr_node_vecs;
+	int cpu, node, nr_node_vecs, idx = 0;
 	/*
 	 * we are changing tlb_vector_offset for each CPU in runtime, but this
 	 * will not cause inconsistency, as the write is atomic under X86. we
@@ -239,7 +239,7 @@ static void __cpuinit calculate_tlb_offset(void)
 		nr_node_vecs = NUM_INVALIDATE_TLB_VECTORS/nr_online_nodes;
 
 	for_each_online_node(node) {
-		int node_offset = (node % NUM_INVALIDATE_TLB_VECTORS) *
+		int node_offset = (idx % NUM_INVALIDATE_TLB_VECTORS) *
 			nr_node_vecs;
 		int cpu_offset = 0;
 		for_each_cpu(cpu, cpumask_of_node(node)) {
@@ -248,6 +248,7 @@ static void __cpuinit calculate_tlb_offset(void)
 			cpu_offset++;
 			cpu_offset = cpu_offset % nr_node_vecs;
 		}
+		idx++;
 	}
 }
 
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index a318194002b5..ba9caa808a9c 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1455,7 +1455,7 @@ static void __init uv_init_uvhub(int uvhub, int vector)
 	 * the below initialization can't be in firmware because the
 	 * messaging IRQ will be determined by the OS
 	 */
-	apicid = uvhub_to_first_apicid(uvhub);
+	apicid = uvhub_to_first_apicid(uvhub) | uv_apicid_hibits;
 	uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG,
 				      ((apicid << 32) | vector));
 }
diff --git a/arch/x86/platform/uv/uv_time.c b/arch/x86/platform/uv/uv_time.c
index 56e421bc379b..9daf5d1af9f1 100644
--- a/arch/x86/platform/uv/uv_time.c
+++ b/arch/x86/platform/uv/uv_time.c
@@ -89,6 +89,7 @@ static void uv_rtc_send_IPI(int cpu)
 
 	apicid = cpu_physical_id(cpu);
 	pnode = uv_apicid_to_pnode(apicid);
+	apicid |= uv_apicid_hibits;
 	val = (1UL << UVH_IPI_INT_SEND_SHFT) |
 	      (apicid << UVH_IPI_INT_APIC_ID_SHFT) |
 	      (X86_PLATFORM_IPI_VECTOR << UVH_IPI_INT_VECTOR_SHFT);
@@ -107,6 +108,7 @@ static int uv_intr_pending(int pnode)
 static int uv_setup_intr(int cpu, u64 expires)
 {
 	u64 val;
+	unsigned long apicid = cpu_physical_id(cpu) | uv_apicid_hibits;
 	int pnode = uv_cpu_to_pnode(cpu);
 
 	uv_write_global_mmr64(pnode, UVH_RTC1_INT_CONFIG,
@@ -117,7 +119,7 @@ static int uv_setup_intr(int cpu, u64 expires)
 		UVH_EVENT_OCCURRED0_RTC1_MASK);
 
 	val = (X86_PLATFORM_IPI_VECTOR << UVH_RTC1_INT_CONFIG_VECTOR_SHFT) |
-		((u64)cpu_physical_id(cpu) << UVH_RTC1_INT_CONFIG_APIC_ID_SHFT);
+		((u64)apicid << UVH_RTC1_INT_CONFIG_APIC_ID_SHFT);
 
 	/* Set configuration */
 	uv_write_global_mmr64(pnode, UVH_RTC1_INT_CONFIG, val);
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 7250bef7f49e..02c710bebf7a 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1200,8 +1200,6 @@ asmlinkage void __init xen_start_kernel(void)
 	/* Allocate and initialize top and mid mfn levels for p2m structure */
 	xen_build_mfn_list_list();
 
-	init_mm.pgd = pgd;
-
 	/* keep using Xen gdt for now; no urgent need to change it */
 
 #ifdef CONFIG_X86_32
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 790af908284e..a1feff9e59b6 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2133,44 +2133,83 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
 	return pgd;
 }
 #else	/* !CONFIG_X86_64 */
-static RESERVE_BRK_ARRAY(pmd_t, level2_kernel_pgt, PTRS_PER_PMD);
+static RESERVE_BRK_ARRAY(pmd_t, initial_kernel_pmd, PTRS_PER_PMD);
+static RESERVE_BRK_ARRAY(pmd_t, swapper_kernel_pmd, PTRS_PER_PMD);
+
+static __init void xen_write_cr3_init(unsigned long cr3)
+{
+	unsigned long pfn = PFN_DOWN(__pa(swapper_pg_dir));
+
+	BUG_ON(read_cr3() != __pa(initial_page_table));
+	BUG_ON(cr3 != __pa(swapper_pg_dir));
+
+	/*
+	 * We are switching to swapper_pg_dir for the first time (from
+	 * initial_page_table) and therefore need to mark that page
+	 * read-only and then pin it.
+	 *
+	 * Xen disallows sharing of kernel PMDs for PAE
+	 * guests. Therefore we must copy the kernel PMD from
+	 * initial_page_table into a new kernel PMD to be used in
+	 * swapper_pg_dir.
+	 */
+	swapper_kernel_pmd =
+		extend_brk(sizeof(pmd_t) * PTRS_PER_PMD, PAGE_SIZE);
+	memcpy(swapper_kernel_pmd, initial_kernel_pmd,
+	       sizeof(pmd_t) * PTRS_PER_PMD);
+	swapper_pg_dir[KERNEL_PGD_BOUNDARY] =
+		__pgd(__pa(swapper_kernel_pmd) | _PAGE_PRESENT);
+	set_page_prot(swapper_kernel_pmd, PAGE_KERNEL_RO);
+
+	set_page_prot(swapper_pg_dir, PAGE_KERNEL_RO);
+	xen_write_cr3(cr3);
+	pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, pfn);
+
+	pin_pagetable_pfn(MMUEXT_UNPIN_TABLE,
+			  PFN_DOWN(__pa(initial_page_table)));
+	set_page_prot(initial_page_table, PAGE_KERNEL);
+	set_page_prot(initial_kernel_pmd, PAGE_KERNEL);
+
+	pv_mmu_ops.write_cr3 = &xen_write_cr3;
+}
 
 __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
 					 unsigned long max_pfn)
 {
 	pmd_t *kernel_pmd;
 
-	level2_kernel_pgt = extend_brk(sizeof(pmd_t) * PTRS_PER_PMD, PAGE_SIZE);
+	initial_kernel_pmd =
+		extend_brk(sizeof(pmd_t) * PTRS_PER_PMD, PAGE_SIZE);
 
 	max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) +
 				  xen_start_info->nr_pt_frames * PAGE_SIZE +
 				  512*1024);
 
 	kernel_pmd = m2v(pgd[KERNEL_PGD_BOUNDARY].pgd);
-	memcpy(level2_kernel_pgt, kernel_pmd, sizeof(pmd_t) * PTRS_PER_PMD);
+	memcpy(initial_kernel_pmd, kernel_pmd, sizeof(pmd_t) * PTRS_PER_PMD);
 
-	xen_map_identity_early(level2_kernel_pgt, max_pfn);
+	xen_map_identity_early(initial_kernel_pmd, max_pfn);
 
-	memcpy(swapper_pg_dir, pgd, sizeof(pgd_t) * PTRS_PER_PGD);
-	set_pgd(&swapper_pg_dir[KERNEL_PGD_BOUNDARY],
-			__pgd(__pa(level2_kernel_pgt) | _PAGE_PRESENT));
+	memcpy(initial_page_table, pgd, sizeof(pgd_t) * PTRS_PER_PGD);
+	initial_page_table[KERNEL_PGD_BOUNDARY] =
+		__pgd(__pa(initial_kernel_pmd) | _PAGE_PRESENT);
 
-	set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO);
-	set_page_prot(swapper_pg_dir, PAGE_KERNEL_RO);
+	set_page_prot(initial_kernel_pmd, PAGE_KERNEL_RO);
+	set_page_prot(initial_page_table, PAGE_KERNEL_RO);
 	set_page_prot(empty_zero_page, PAGE_KERNEL_RO);
 
 	pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, PFN_DOWN(__pa(pgd)));
 
-	xen_write_cr3(__pa(swapper_pg_dir));
-
-	pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, PFN_DOWN(__pa(swapper_pg_dir)));
+	pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE,
+			  PFN_DOWN(__pa(initial_page_table)));
+	xen_write_cr3(__pa(initial_page_table));
 
 	memblock_x86_reserve_range(__pa(xen_start_info->pt_base),
 		      __pa(xen_start_info->pt_base +
 			   xen_start_info->nr_pt_frames * PAGE_SIZE),
 		      "XEN PAGETABLES");
 
-	return swapper_pg_dir;
+	return initial_page_table;
 }
 #endif	/* CONFIG_X86_64 */
 
@@ -2304,7 +2343,11 @@ static const struct pv_mmu_ops xen_mmu_ops __initdata = {
 	.write_cr2 = xen_write_cr2,
 
 	.read_cr3 = xen_read_cr3,
+#ifdef CONFIG_X86_32
+	.write_cr3 = xen_write_cr3_init,
+#else
 	.write_cr3 = xen_write_cr3,
+#endif
 
 	.flush_tlb_user = xen_flush_tlb,
 	.flush_tlb_kernel = xen_flush_tlb,
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 38fdffaa71d3..01afd8a94607 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -23,7 +23,6 @@
 #include <xen/interface/callback.h>
 #include <xen/interface/memory.h>
 #include <xen/interface/physdev.h>
-#include <xen/interface/memory.h>
 #include <xen/features.h>
 
 #include "xen-ops.h"
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 56ad4531b412..004be80fd894 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -645,7 +645,7 @@ static int throtl_dispatch_tg(struct throtl_data *td, struct throtl_grp *tg,
 {
 	unsigned int nr_reads = 0, nr_writes = 0;
 	unsigned int max_nr_reads = throtl_grp_quantum*3/4;
-	unsigned int max_nr_writes = throtl_grp_quantum - nr_reads;
+	unsigned int max_nr_writes = throtl_grp_quantum - max_nr_reads;
 	struct bio *bio;
 
 	/* Try to dispatch 75% READS and 25% WRITES */
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index a1725e6488d3..7888501ad9ee 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1341,7 +1341,7 @@ static struct request *set_next_request(void)
 {
 	struct request_queue *q;
 	int cnt = FD_MAX_UNITS;
-	struct request *rq;
+	struct request *rq = NULL;
 
 	/* Find next queue we can dispatch from */
 	fdc_queue = fdc_queue + 1;
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 4e4cc6c828cb..605a67e40bbf 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1399,7 +1399,7 @@ static struct request *set_next_request(void)
 {
 	struct request_queue *q;
 	int old_pos = fdc_queue;
-	struct request *rq;
+	struct request *rq = NULL;
 
 	do {
 		q = unit[fdc_queue].disk->queue;
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index a67d0a611a8a..f291587d753e 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -66,6 +66,7 @@ MODULE_VERSION("3.6.26");
 MODULE_LICENSE("GPL");
 
 static DEFINE_MUTEX(cciss_mutex);
+static struct proc_dir_entry *proc_cciss;
 
 #include "cciss_cmd.h"
 #include "cciss.h"
@@ -363,8 +364,6 @@ static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
 #define ENG_GIG_FACTOR (ENG_GIG/512)
 #define ENGAGE_SCSI	"engage scsi"
 
-static struct proc_dir_entry *proc_cciss;
-
 static void cciss_seq_show_header(struct seq_file *seq)
 {
 	ctlr_info_t *h = seq->private;
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 255035cfc88a..4f9e22f29138 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -65,7 +65,7 @@ enum blkif_state {
 
 struct blk_shadow {
 	struct blkif_request req;
-	unsigned long request;
+	struct request *request;
 	unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST];
 };
 
@@ -136,7 +136,7 @@ static void add_id_to_freelist(struct blkfront_info *info,
 			       unsigned long id)
 {
 	info->shadow[id].req.id  = info->shadow_free;
-	info->shadow[id].request = 0;
+	info->shadow[id].request = NULL;
 	info->shadow_free = id;
 }
 
@@ -245,14 +245,11 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode,
 }
 
 /*
- * blkif_queue_request
+ * Generate a Xen blkfront IO request from a blk layer request.  Reads
+ * and writes are handled as expected.  Since we lack a loose flush
+ * request, we map flushes into a full ordered barrier.
  *
- * request block io
- *
- * id: for guest use only.
- * operation: BLKIF_OP_{READ,WRITE,PROBE}
- * buffer: buffer to read/write into. this should be a
- *   virtual address in the guest os.
+ * @req: a request struct
  */
 static int blkif_queue_request(struct request *req)
 {
@@ -281,7 +278,7 @@ static int blkif_queue_request(struct request *req)
 	/* Fill out a communications ring structure. */
 	ring_req = RING_GET_REQUEST(&info->ring, info->ring.req_prod_pvt);
 	id = get_id_from_freelist(info);
-	info->shadow[id].request = (unsigned long)req;
+	info->shadow[id].request = req;
 
 	ring_req->id = id;
 	ring_req->sector_number = (blkif_sector_t)blk_rq_pos(req);
@@ -290,6 +287,18 @@ static int blkif_queue_request(struct request *req)
 	ring_req->operation = rq_data_dir(req) ?
 		BLKIF_OP_WRITE : BLKIF_OP_READ;
 
+	if (req->cmd_flags & (REQ_FLUSH | REQ_FUA)) {
+		/*
+		 * Ideally we could just do an unordered
+		 * flush-to-disk, but all we have is a full write
+		 * barrier at the moment.  However, a barrier write is
+		 * a superset of FUA, so we can implement it the same
+		 * way.  (It's also a FLUSH+FUA, since it is
+		 * guaranteed ordered WRT previous writes.)
+		 */
+		ring_req->operation = BLKIF_OP_WRITE_BARRIER;
+	}
+
 	ring_req->nr_segments = blk_rq_map_sg(req->q, req, info->sg);
 	BUG_ON(ring_req->nr_segments > BLKIF_MAX_SEGMENTS_PER_REQUEST);
 
@@ -634,7 +643,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
 
 		bret = RING_GET_RESPONSE(&info->ring, i);
 		id   = bret->id;
-		req  = (struct request *)info->shadow[id].request;
+		req  = info->shadow[id].request;
 
 		blkif_completion(&info->shadow[id]);
 
@@ -647,6 +656,16 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
 				printk(KERN_WARNING "blkfront: %s: write barrier op failed\n",
 				       info->gd->disk_name);
 				error = -EOPNOTSUPP;
+			}
+			if (unlikely(bret->status == BLKIF_RSP_ERROR &&
+				     info->shadow[id].req.nr_segments == 0)) {
+				printk(KERN_WARNING "blkfront: %s: empty write barrier op failed\n",
+				       info->gd->disk_name);
+				error = -EOPNOTSUPP;
+			}
+			if (unlikely(error)) {
+				if (error == -EOPNOTSUPP)
+					error = 0;
 				info->feature_flush = 0;
 				xlvbd_flush(info);
 			}
@@ -899,7 +918,7 @@ static int blkif_recover(struct blkfront_info *info)
 	/* Stage 3: Find pending requests and requeue them. */
 	for (i = 0; i < BLK_RING_SIZE; i++) {
 		/* Not in use? */
-		if (copy[i].request == 0)
+		if (!copy[i].request)
 			continue;
 
 		/* Grab a request slot and copy shadow state into it. */
@@ -916,9 +935,7 @@ static int blkif_recover(struct blkfront_info *info)
 				req->seg[j].gref,
 				info->xbdev->otherend_id,
 				pfn_to_mfn(info->shadow[req->id].frame[j]),
-				rq_data_dir(
-					(struct request *)
-					info->shadow[req->id].request));
+				rq_data_dir(info->shadow[req->id].request));
 		info->shadow[req->id].req = *req;
 
 		info->ring.req_prod_pvt++;
@@ -1067,14 +1084,8 @@ static void blkfront_connect(struct blkfront_info *info)
 	 */
 	info->feature_flush = 0;
 
-	/*
-	 * The driver doesn't properly handled empty flushes, so
-	 * lets disable barrier support for now.
-	 */
-#if 0
 	if (!err && barrier)
-		info->feature_flush = REQ_FLUSH;
-#endif
+		info->feature_flush = REQ_FLUSH | REQ_FUA;
 
 	err = xlvbd_alloc_gendisk(sectors, info, binfo, sector_size);
 	if (err) {
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 1030f8420137..c17a305ecb28 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/wait.h>
+#include <linux/acpi.h>
 #include "tpm.h"
 
 #define TPM_HEADER_SIZE 10
@@ -78,6 +79,26 @@ enum tis_defaults {
 static LIST_HEAD(tis_chips);
 static DEFINE_SPINLOCK(tis_lock);
 
+#ifdef CONFIG_ACPI
+static int is_itpm(struct pnp_dev *dev)
+{
+	struct acpi_device *acpi = pnp_acpi_device(dev);
+	struct acpi_hardware_id *id;
+
+	list_for_each_entry(id, &acpi->pnp.ids, list) {
+		if (!strcmp("INTC0102", id->id))
+			return 1;
+	}
+
+	return 0;
+}
+#else
+static int is_itpm(struct pnp_dev *dev)
+{
+	return 0;
+}
+#endif
+
 static int check_locality(struct tpm_chip *chip, int l)
 {
 	if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &
@@ -472,6 +493,9 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
 		 "1.2 TPM (device-id 0x%X, rev-id %d)\n",
 		 vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
 
+	if (is_itpm(to_pnp_dev(dev)))
+		itpm = 1;
+
 	if (itpm)
 		dev_info(dev, "Intel iTPM workaround enabled\n");
 
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index b3781399b38a..ba2898b3639b 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -10,16 +10,16 @@ obj-$(CONFIG_EDAC)			:= edac_stub.o
 obj-$(CONFIG_EDAC_MM_EDAC)		+= edac_core.o
 obj-$(CONFIG_EDAC_MCE)			+= edac_mce.o
 
-edac_core-objs	:= edac_mc.o edac_device.o edac_mc_sysfs.o edac_pci_sysfs.o
-edac_core-objs	+= edac_module.o edac_device_sysfs.o
+edac_core-y	:= edac_mc.o edac_device.o edac_mc_sysfs.o edac_pci_sysfs.o
+edac_core-y	+= edac_module.o edac_device_sysfs.o
 
 ifdef CONFIG_PCI
-edac_core-objs	+= edac_pci.o edac_pci_sysfs.o
+edac_core-y	+= edac_pci.o edac_pci_sysfs.o
 endif
 
 obj-$(CONFIG_EDAC_MCE_INJ)		+= mce_amd_inj.o
 
-edac_mce_amd-objs			:= mce_amd.o
+edac_mce_amd-y				:= mce_amd.o
 obj-$(CONFIG_EDAC_DECODE_MCE)		+= edac_mce_amd.o
 
 obj-$(CONFIG_EDAC_AMD76X)		+= amd76x_edac.o
diff --git a/drivers/edac/mce_amd_inj.c b/drivers/edac/mce_amd_inj.c
index 8d0688f36d4c..39faded3cadd 100644
--- a/drivers/edac/mce_amd_inj.c
+++ b/drivers/edac/mce_amd_inj.c
@@ -139,7 +139,7 @@ static int __init edac_init_mce_inject(void)
 	return 0;
 
 err_sysfs_create:
-	while (i-- >= 0)
+	while (--i >= 0)
 		sysfs_remove_file(mce_kobj, &sysfs_attrs[i]->attr);
 
 	kobject_del(mce_kobj);
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 18fdd9703b48..1a467a91fb0b 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/bug.h>
+#include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/firewire.h>
 #include <linux/firewire-constants.h>
@@ -26,8 +27,14 @@
 #include <asm/unaligned.h>
 #include <net/arp.h>
 
-#define FWNET_MAX_FRAGMENTS	25	/* arbitrary limit */
-#define FWNET_ISO_PAGE_COUNT	(PAGE_SIZE < 16 * 1024 ? 4 : 2)
+/* rx limits */
+#define FWNET_MAX_FRAGMENTS		30 /* arbitrary, > TX queue depth */
+#define FWNET_ISO_PAGE_COUNT		(PAGE_SIZE < 16*1024 ? 4 : 2)
+
+/* tx limits */
+#define FWNET_MAX_QUEUED_DATAGRAMS	20 /* < 64 = number of tlabels */
+#define FWNET_MIN_QUEUED_DATAGRAMS	10 /* should keep AT DMA busy enough */
+#define FWNET_TX_QUEUE_LEN		FWNET_MAX_QUEUED_DATAGRAMS /* ? */
 
 #define IEEE1394_BROADCAST_CHANNEL	31
 #define IEEE1394_ALL_NODES		(0xffc0 | 0x003f)
@@ -169,15 +176,8 @@ struct fwnet_device {
 	struct fw_address_handler handler;
 	u64 local_fifo;
 
-	/* List of packets to be sent */
-	struct list_head packet_list;
-	/*
-	 * List of packets that were broadcasted.  When we get an ISO interrupt
-	 * one of them has been sent
-	 */
-	struct list_head broadcasted_list;
-	/* List of packets that have been sent but not yet acked */
-	struct list_head sent_list;
+	/* Number of tx datagrams that have been queued but not yet acked */
+	int queued_datagrams;
 
 	struct list_head peer_list;
 	struct fw_card *card;
@@ -195,7 +195,7 @@ struct fwnet_peer {
 	unsigned pdg_size;        /* pd_list size */
 
 	u16 datagram_label;       /* outgoing datagram label */
-	unsigned max_payload;     /* includes RFC2374_FRAG_HDR_SIZE overhead */
+	u16 max_payload;          /* includes RFC2374_FRAG_HDR_SIZE overhead */
 	int node_id;
 	int generation;
 	unsigned speed;
@@ -203,22 +203,18 @@ struct fwnet_peer {
 
 /* This is our task struct. It's used for the packet complete callback.  */
 struct fwnet_packet_task {
-	/*
-	 * ptask can actually be on dev->packet_list, dev->broadcasted_list,
-	 * or dev->sent_list depending on its current state.
-	 */
-	struct list_head pt_link;
 	struct fw_transaction transaction;
 	struct rfc2734_header hdr;
 	struct sk_buff *skb;
 	struct fwnet_device *dev;
 
 	int outstanding_pkts;
-	unsigned max_payload;
 	u64 fifo_addr;
 	u16 dest_node;
+	u16 max_payload;
 	u8 generation;
 	u8 speed;
+	u8 enqueued;
 };
 
 /*
@@ -650,8 +646,6 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
 		net->stats.rx_packets++;
 		net->stats.rx_bytes += skb->len;
 	}
-	if (netif_queue_stopped(net))
-		netif_wake_queue(net);
 
 	return 0;
 
@@ -660,8 +654,6 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
 	net->stats.rx_dropped++;
 
 	dev_kfree_skb_any(skb);
-	if (netif_queue_stopped(net))
-		netif_wake_queue(net);
 
 	return -ENOENT;
 }
@@ -793,15 +785,10 @@ static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
 	 * Datagram is not complete, we're done for the
 	 * moment.
 	 */
-	spin_unlock_irqrestore(&dev->lock, flags);
-
-	return 0;
+	retval = 0;
  fail:
 	spin_unlock_irqrestore(&dev->lock, flags);
 
-	if (netif_queue_stopped(net))
-		netif_wake_queue(net);
-
 	return retval;
 }
 
@@ -901,11 +888,19 @@ static void fwnet_free_ptask(struct fwnet_packet_task *ptask)
 	kmem_cache_free(fwnet_packet_task_cache, ptask);
 }
 
+/* Caller must hold dev->lock. */
+static void dec_queued_datagrams(struct fwnet_device *dev)
+{
+	if (--dev->queued_datagrams == FWNET_MIN_QUEUED_DATAGRAMS)
+		netif_wake_queue(dev->netdev);
+}
+
 static int fwnet_send_packet(struct fwnet_packet_task *ptask);
 
 static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
 {
 	struct fwnet_device *dev = ptask->dev;
+	struct sk_buff *skb = ptask->skb;
 	unsigned long flags;
 	bool free;
 
@@ -914,10 +909,14 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
 	ptask->outstanding_pkts--;
 
 	/* Check whether we or the networking TX soft-IRQ is last user. */
-	free = (ptask->outstanding_pkts == 0 && !list_empty(&ptask->pt_link));
+	free = (ptask->outstanding_pkts == 0 && ptask->enqueued);
+	if (free)
+		dec_queued_datagrams(dev);
 
-	if (ptask->outstanding_pkts == 0)
-		list_del(&ptask->pt_link);
+	if (ptask->outstanding_pkts == 0) {
+		dev->netdev->stats.tx_packets++;
+		dev->netdev->stats.tx_bytes += skb->len;
+	}
 
 	spin_unlock_irqrestore(&dev->lock, flags);
 
@@ -926,7 +925,6 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
 		u16 fg_off;
 		u16 datagram_label;
 		u16 lf;
-		struct sk_buff *skb;
 
 		/* Update the ptask to point to the next fragment and send it */
 		lf = fwnet_get_hdr_lf(&ptask->hdr);
@@ -953,7 +951,7 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
 			datagram_label = fwnet_get_hdr_dgl(&ptask->hdr);
 			break;
 		}
-		skb = ptask->skb;
+
 		skb_pull(skb, ptask->max_payload);
 		if (ptask->outstanding_pkts > 1) {
 			fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_INTFRAG,
@@ -970,6 +968,31 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
 		fwnet_free_ptask(ptask);
 }
 
+static void fwnet_transmit_packet_failed(struct fwnet_packet_task *ptask)
+{
+	struct fwnet_device *dev = ptask->dev;
+	unsigned long flags;
+	bool free;
+
+	spin_lock_irqsave(&dev->lock, flags);
+
+	/* One fragment failed; don't try to send remaining fragments. */
+	ptask->outstanding_pkts = 0;
+
+	/* Check whether we or the networking TX soft-IRQ is last user. */
+	free = ptask->enqueued;
+	if (free)
+		dec_queued_datagrams(dev);
+
+	dev->netdev->stats.tx_dropped++;
+	dev->netdev->stats.tx_errors++;
+
+	spin_unlock_irqrestore(&dev->lock, flags);
+
+	if (free)
+		fwnet_free_ptask(ptask);
+}
+
 static void fwnet_write_complete(struct fw_card *card, int rcode,
 				 void *payload, size_t length, void *data)
 {
@@ -977,11 +1000,12 @@ static void fwnet_write_complete(struct fw_card *card, int rcode,
 
 	ptask = data;
 
-	if (rcode == RCODE_COMPLETE)
+	if (rcode == RCODE_COMPLETE) {
 		fwnet_transmit_packet_done(ptask);
-	else
+	} else {
 		fw_error("fwnet_write_complete: failed: %x\n", rcode);
-		/* ??? error recovery */
+		fwnet_transmit_packet_failed(ptask);
+	}
 }
 
 static int fwnet_send_packet(struct fwnet_packet_task *ptask)
@@ -1039,9 +1063,11 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
 		spin_lock_irqsave(&dev->lock, flags);
 
 		/* If the AT tasklet already ran, we may be last user. */
-		free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link));
+		free = (ptask->outstanding_pkts == 0 && !ptask->enqueued);
 		if (!free)
-			list_add_tail(&ptask->pt_link, &dev->broadcasted_list);
+			ptask->enqueued = true;
+		else
+			dec_queued_datagrams(dev);
 
 		spin_unlock_irqrestore(&dev->lock, flags);
 
@@ -1056,9 +1082,11 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
 	spin_lock_irqsave(&dev->lock, flags);
 
 	/* If the AT tasklet already ran, we may be last user. */
-	free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link));
+	free = (ptask->outstanding_pkts == 0 && !ptask->enqueued);
 	if (!free)
-		list_add_tail(&ptask->pt_link, &dev->sent_list);
+		ptask->enqueued = true;
+	else
+		dec_queued_datagrams(dev);
 
 	spin_unlock_irqrestore(&dev->lock, flags);
 
@@ -1224,6 +1252,15 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
 	struct fwnet_peer *peer;
 	unsigned long flags;
 
+	spin_lock_irqsave(&dev->lock, flags);
+
+	/* Can this happen? */
+	if (netif_queue_stopped(dev->netdev)) {
+		spin_unlock_irqrestore(&dev->lock, flags);
+
+		return NETDEV_TX_BUSY;
+	}
+
 	ptask = kmem_cache_alloc(fwnet_packet_task_cache, GFP_ATOMIC);
 	if (ptask == NULL)
 		goto fail;
@@ -1242,9 +1279,6 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
 	proto = hdr_buf.h_proto;
 	dg_size = skb->len;
 
-	/* serialize access to peer, including peer->datagram_label */
-	spin_lock_irqsave(&dev->lock, flags);
-
 	/*
 	 * Set the transmission type for the packet.  ARP packets and IP
 	 * broadcast packets are sent via GASP.
@@ -1266,7 +1300,7 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
 
 		peer = fwnet_peer_find_by_guid(dev, be64_to_cpu(guid));
 		if (!peer || peer->fifo == FWNET_NO_FIFO_ADDR)
-			goto fail_unlock;
+			goto fail;
 
 		generation         = peer->generation;
 		dest_node          = peer->node_id;
@@ -1320,18 +1354,21 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
 		max_payload += RFC2374_FRAG_HDR_SIZE;
 	}
 
+	if (++dev->queued_datagrams == FWNET_MAX_QUEUED_DATAGRAMS)
+		netif_stop_queue(dev->netdev);
+
 	spin_unlock_irqrestore(&dev->lock, flags);
 
 	ptask->max_payload = max_payload;
-	INIT_LIST_HEAD(&ptask->pt_link);
+	ptask->enqueued    = 0;
 
 	fwnet_send_packet(ptask);
 
 	return NETDEV_TX_OK;
 
- fail_unlock:
-	spin_unlock_irqrestore(&dev->lock, flags);
  fail:
+	spin_unlock_irqrestore(&dev->lock, flags);
+
 	if (ptask)
 		kmem_cache_free(fwnet_packet_task_cache, ptask);
 
@@ -1377,7 +1414,7 @@ static void fwnet_init_dev(struct net_device *net)
 	net->addr_len		= FWNET_ALEN;
 	net->hard_header_len	= FWNET_HLEN;
 	net->type		= ARPHRD_IEEE1394;
-	net->tx_queue_len	= 10;
+	net->tx_queue_len	= FWNET_TX_QUEUE_LEN;
 }
 
 /* caller must hold fwnet_device_mutex */
@@ -1457,14 +1494,9 @@ static int fwnet_probe(struct device *_dev)
 	dev->broadcast_rcv_context = NULL;
 	dev->broadcast_xmt_max_payload = 0;
 	dev->broadcast_xmt_datagramlabel = 0;
-
 	dev->local_fifo = FWNET_NO_FIFO_ADDR;
-
-	INIT_LIST_HEAD(&dev->packet_list);
-	INIT_LIST_HEAD(&dev->broadcasted_list);
-	INIT_LIST_HEAD(&dev->sent_list);
+	dev->queued_datagrams = 0;
 	INIT_LIST_HEAD(&dev->peer_list);
-
 	dev->card = card;
 	dev->netdev = net;
 
@@ -1522,7 +1554,7 @@ static int fwnet_remove(struct device *_dev)
 	struct fwnet_peer *peer = dev_get_drvdata(_dev);
 	struct fwnet_device *dev = peer->dev;
 	struct net_device *net;
-	struct fwnet_packet_task *ptask, *pt_next;
+	int i;
 
 	mutex_lock(&fwnet_device_mutex);
 
@@ -1540,21 +1572,9 @@ static int fwnet_remove(struct device *_dev)
 					      dev->card);
 			fw_iso_context_destroy(dev->broadcast_rcv_context);
 		}
-		list_for_each_entry_safe(ptask, pt_next,
-					 &dev->packet_list, pt_link) {
-			dev_kfree_skb_any(ptask->skb);
-			kmem_cache_free(fwnet_packet_task_cache, ptask);
-		}
-		list_for_each_entry_safe(ptask, pt_next,
-					 &dev->broadcasted_list, pt_link) {
-			dev_kfree_skb_any(ptask->skb);
-			kmem_cache_free(fwnet_packet_task_cache, ptask);
-		}
-		list_for_each_entry_safe(ptask, pt_next,
-					 &dev->sent_list, pt_link) {
-			dev_kfree_skb_any(ptask->skb);
-			kmem_cache_free(fwnet_packet_task_cache, ptask);
-		}
+		for (i = 0; dev->queued_datagrams && i < 5; i++)
+			ssleep(1);
+		WARN_ON(dev->queued_datagrams);
 		list_del(&dev->dev_link);
 
 		free_netdev(net);
diff --git a/drivers/hwmon/i5k_amb.c b/drivers/hwmon/i5k_amb.c
index 937983407e2a..c4c40be0edbf 100644
--- a/drivers/hwmon/i5k_amb.c
+++ b/drivers/hwmon/i5k_amb.c
@@ -497,12 +497,14 @@ static unsigned long chipset_ids[] = {
 	0
 };
 
+#ifdef MODULE
 static struct pci_device_id i5k_amb_ids[] __devinitdata = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR) },
 	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, i5k_amb_ids);
+#endif
 
 static int __devinit i5k_amb_probe(struct platform_device *pdev)
 {
diff --git a/drivers/hwmon/lis3lv02d_i2c.c b/drivers/hwmon/lis3lv02d_i2c.c
index 9f4bae07f719..8853afce85ce 100644
--- a/drivers/hwmon/lis3lv02d_i2c.c
+++ b/drivers/hwmon/lis3lv02d_i2c.c
@@ -186,7 +186,7 @@ static int __devexit lis3lv02d_i2c_remove(struct i2c_client *client)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int lis3lv02d_i2c_suspend(struct device *dev)
 {
 	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
@@ -213,12 +213,9 @@ static int lis3lv02d_i2c_resume(struct device *dev)
 
 	return 0;
 }
-#else
-#define lis3lv02d_i2c_suspend	NULL
-#define lis3lv02d_i2c_resume	NULL
-#define lis3lv02d_i2c_shutdown	NULL
-#endif
+#endif /* CONFIG_PM_SLEEP */
 
+#ifdef CONFIG_PM_RUNTIME
 static int lis3_i2c_runtime_suspend(struct device *dev)
 {
 	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
@@ -236,6 +233,7 @@ static int lis3_i2c_runtime_resume(struct device *dev)
 	lis3lv02d_poweron(lis3);
 	return 0;
 }
+#endif /* CONFIG_PM_RUNTIME */
 
 static const struct i2c_device_id lis3lv02d_id[] = {
 	{"lis3lv02d", 0 },
diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig
index 6256233d2bfb..bcb1fdedb595 100644
--- a/drivers/input/serio/Kconfig
+++ b/drivers/input/serio/Kconfig
@@ -214,7 +214,6 @@ config SERIO_AMS_DELTA
 	tristate "Amstrad Delta (E3) mailboard support"
 	depends on MACH_AMS_DELTA
 	default y
-	select AMS_DELTA_FIQ
 	---help---
 	  Say Y here if you have an E3 and want to use its mailboard,
 	  or any standard AT keyboard connected to the mailboard port.
diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c
index 2e847a90bad0..f2b5bab5e6a1 100644
--- a/drivers/isdn/icn/icn.c
+++ b/drivers/isdn/icn/icn.c
@@ -1627,7 +1627,7 @@ __setup("icn=", icn_setup);
 static int __init icn_init(void)
 {
 	char *p;
-	char rev[10];
+	char rev[20];
 
 	memset(&dev, 0, sizeof(icn_dev));
 	dev.memaddr = (membase & 0x0ffc000);
@@ -1637,9 +1637,10 @@ static int __init icn_init(void)
 	spin_lock_init(&dev.devlock);
 
 	if ((p = strchr(revision, ':'))) {
-		strcpy(rev, p + 1);
+		strncpy(rev, p + 1, 20);
 		p = strchr(rev, '$');
-		*p = 0;
+		if (p)
+			*p = 0;
 	} else
 		strcpy(rev, " ??? ");
 	printk(KERN_NOTICE "ICN-ISDN-driver Rev%smem=0x%08lx\n", rev,
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8f86d702e46e..31ae07a36576 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1559,7 +1559,7 @@ void mmc_stop_host(struct mmc_host *host)
 
 	if (host->caps & MMC_CAP_DISABLE)
 		cancel_delayed_work(&host->disable);
-	cancel_delayed_work(&host->detect);
+	cancel_delayed_work_sync(&host->detect);
 	mmc_flush_scheduled_work();
 
 	/* clear pm flags now and let card drivers set them as needed */
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 995261f7fd70..77f93c3b8808 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -375,7 +375,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	struct mmc_card *oldcard)
 {
 	struct mmc_card *card;
-	int err, ddr = MMC_SDR_MODE;
+	int err, ddr = 0;
 	u32 cid[4];
 	unsigned int max_dtr;
 
@@ -562,7 +562,11 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 			       1 << bus_width, ddr);
 			err = 0;
 		} else {
-			mmc_card_set_ddr_mode(card);
+			if (ddr)
+				mmc_card_set_ddr_mode(card);
+			else
+				ddr = MMC_SDR_MODE;
+
 			mmc_set_bus_width_ddr(card->host, bus_width, ddr);
 		}
 	}
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index c3ad1058cd31..efef5f94ac42 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -547,9 +547,11 @@ static void mmc_sdio_detect(struct mmc_host *host)
 	BUG_ON(!host->card);
 
 	/* Make sure card is powered before detecting it */
-	err = pm_runtime_get_sync(&host->card->dev);
-	if (err < 0)
-		goto out;
+	if (host->caps & MMC_CAP_POWER_OFF_CARD) {
+		err = pm_runtime_get_sync(&host->card->dev);
+		if (err < 0)
+			goto out;
+	}
 
 	mmc_claim_host(host);
 
@@ -560,6 +562,20 @@ static void mmc_sdio_detect(struct mmc_host *host)
 
 	mmc_release_host(host);
 
+	/*
+	 * Tell PM core it's OK to power off the card now.
+	 *
+	 * The _sync variant is used in order to ensure that the card
+	 * is left powered off in case an error occurred, and the card
+	 * is going to be removed.
+	 *
+	 * Since there is no specific reason to believe a new user
+	 * is about to show up at this point, the _sync variant is
+	 * desirable anyway.
+	 */
+	if (host->caps & MMC_CAP_POWER_OFF_CARD)
+		pm_runtime_put_sync(&host->card->dev);
+
 out:
 	if (err) {
 		mmc_sdio_remove(host);
@@ -568,9 +584,6 @@ out:
 		mmc_detach_bus(host);
 		mmc_release_host(host);
 	}
-
-	/* Tell PM core that we're done */
-	pm_runtime_put(&host->card->dev);
 }
 
 /*
@@ -718,16 +731,21 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	card = host->card;
 
 	/*
-	 * Let runtime PM core know our card is active
+	 * Enable runtime PM only if supported by host+card+board
 	 */
-	err = pm_runtime_set_active(&card->dev);
-	if (err)
-		goto remove;
+	if (host->caps & MMC_CAP_POWER_OFF_CARD) {
+		/*
+		 * Let runtime PM core know our card is active
+		 */
+		err = pm_runtime_set_active(&card->dev);
+		if (err)
+			goto remove;
 
-	/*
-	 * Enable runtime PM for this card
-	 */
-	pm_runtime_enable(&card->dev);
+		/*
+		 * Enable runtime PM for this card
+		 */
+		pm_runtime_enable(&card->dev);
+	}
 
 	/*
 	 * The number of functions on the card is encoded inside
@@ -745,9 +763,10 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 			goto remove;
 
 		/*
-		 * Enable Runtime PM for this func
+		 * Enable Runtime PM for this func (if supported)
 		 */
-		pm_runtime_enable(&card->sdio_func[i]->dev);
+		if (host->caps & MMC_CAP_POWER_OFF_CARD)
+			pm_runtime_enable(&card->sdio_func[i]->dev);
 	}
 
 	mmc_release_host(host);
diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index 2716c7ab6bbf..203da443e339 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -17,6 +17,7 @@
 #include <linux/pm_runtime.h>
 
 #include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
 #include <linux/mmc/sdio_func.h>
 
 #include "sdio_cis.h"
@@ -132,9 +133,11 @@ static int sdio_bus_probe(struct device *dev)
 	 * it should call pm_runtime_put_noidle() in its probe routine and
 	 * pm_runtime_get_noresume() in its remove routine.
 	 */
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0)
-		goto out;
+	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) {
+		ret = pm_runtime_get_sync(dev);
+		if (ret < 0)
+			goto out;
+	}
 
 	/* Set the default block size so the driver is sure it's something
 	 * sensible. */
@@ -151,7 +154,8 @@ static int sdio_bus_probe(struct device *dev)
 	return 0;
 
 disable_runtimepm:
-	pm_runtime_put_noidle(dev);
+	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
+		pm_runtime_put_noidle(dev);
 out:
 	return ret;
 }
@@ -160,12 +164,14 @@ static int sdio_bus_remove(struct device *dev)
 {
 	struct sdio_driver *drv = to_sdio_driver(dev->driver);
 	struct sdio_func *func = dev_to_sdio_func(dev);
-	int ret;
+	int ret = 0;
 
 	/* Make sure card is powered before invoking ->remove() */
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0)
-		goto out;
+	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) {
+		ret = pm_runtime_get_sync(dev);
+		if (ret < 0)
+			goto out;
+	}
 
 	drv->remove(func);
 
@@ -178,10 +184,12 @@ static int sdio_bus_remove(struct device *dev)
 	}
 
 	/* First, undo the increment made directly above */
-	pm_runtime_put_noidle(dev);
+	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
+		pm_runtime_put_noidle(dev);
 
 	/* Then undo the runtime PM settings in sdio_bus_probe() */
-	pm_runtime_put_noidle(dev);
+	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
+		pm_runtime_put_noidle(dev);
 
 out:
 	return ret;
@@ -191,6 +199,8 @@ out:
 
 static int sdio_bus_pm_prepare(struct device *dev)
 {
+	struct sdio_func *func = dev_to_sdio_func(dev);
+
 	/*
 	 * Resume an SDIO device which was suspended at run time at this
 	 * point, in order to allow standard SDIO suspend/resume paths
@@ -212,7 +222,8 @@ static int sdio_bus_pm_prepare(struct device *dev)
 	 * since there is little point in failing system suspend if a
 	 * device can't be resumed.
 	 */
-	pm_runtime_resume(dev);
+	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
+		pm_runtime_resume(dev);
 
 	return 0;
 }
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 82a1079bbdc7..5d46021cbb57 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1002,7 +1002,7 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host,
 	 * Monitor a 0->1 transition first
 	 */
 	if (mmc_slot(host).features & HSMMC_HAS_UPDATED_RESET) {
-		while ((!(OMAP_HSMMC_READ(host, SYSCTL) & bit))
+		while ((!(OMAP_HSMMC_READ(host->base, SYSCTL) & bit))
 					&& (i++ < limit))
 			cpu_relax();
 	}
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 2e9cca19c90b..9b82910b9dbb 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -17,6 +17,7 @@
 #include <linux/clk.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/sdhci-pltfm.h>
+#include <mach/hardware.h>
 #include "sdhci.h"
 #include "sdhci-pltfm.h"
 #include "sdhci-esdhc.h"
@@ -112,6 +113,13 @@ static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pd
 	clk_enable(clk);
 	pltfm_host->clk = clk;
 
+	if (cpu_is_mx35() || cpu_is_mx51())
+		host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+
+	/* Fix errata ENGcm07207 which is present on i.MX25 and i.MX35 */
+	if (cpu_is_mx25() || cpu_is_mx35())
+		host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
+
 	return 0;
 }
 
@@ -133,10 +141,8 @@ static struct sdhci_ops sdhci_esdhc_ops = {
 };
 
 struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
-	.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_NO_MULTIBLOCK
-			| SDHCI_QUIRK_BROKEN_ADMA,
+	.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA,
 	/* ADMA has issues. Might be fixable */
-	/* NO_MULTIBLOCK might be MX35 only (Errata: ENGcm07207) */
 	.ops = &sdhci_esdhc_ops,
 	.init = esdhc_pltfm_init,
 	.exit = esdhc_pltfm_exit,
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 55746bac2f44..3d9c2460d437 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -149,11 +149,11 @@ static const struct sdhci_pci_fixes sdhci_cafe = {
  * ADMA operation is disabled for Moorestown platform due to
  * hardware bugs.
  */
-static int mrst_hc1_probe(struct sdhci_pci_chip *chip)
+static int mrst_hc_probe(struct sdhci_pci_chip *chip)
 {
 	/*
-	 * slots number is fixed here for MRST as SDIO3 is never used and has
-	 * hardware bugs.
+	 * slots number is fixed here for MRST as SDIO3/5 are never used and
+	 * have hardware bugs.
 	 */
 	chip->num_slots = 1;
 	return 0;
@@ -163,9 +163,9 @@ static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
 	.quirks		= SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
 };
 
-static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1 = {
+static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
 	.quirks		= SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
-	.probe		= mrst_hc1_probe,
+	.probe		= mrst_hc_probe,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
@@ -538,7 +538,15 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
 		.device		= PCI_DEVICE_ID_INTEL_MRST_SD1,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (kernel_ulong_t)&sdhci_intel_mrst_hc1,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
+	},
+
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_MRST_SD2,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
 	},
 
 	{
@@ -637,6 +645,7 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
 {
 	struct sdhci_pci_chip *chip;
 	struct sdhci_pci_slot *slot;
+	mmc_pm_flag_t slot_pm_flags;
 	mmc_pm_flag_t pm_flags = 0;
 	int i, ret;
 
@@ -657,7 +666,11 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
 			return ret;
 		}
 
-		pm_flags |= slot->host->mmc->pm_flags;
+		slot_pm_flags = slot->host->mmc->pm_flags;
+		if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
+			sdhci_enable_irq_wakeups(slot->host);
+
+		pm_flags |= slot_pm_flags;
 	}
 
 	if (chip->fixes && chip->fixes->suspend) {
@@ -671,8 +684,10 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
 
 	pci_save_state(pdev);
 	if (pm_flags & MMC_PM_KEEP_POWER) {
-		if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
+		if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) {
+			pci_pme_active(pdev, true);
 			pci_enable_wake(pdev, PCI_D3hot, 1);
+		}
 		pci_set_power_state(pdev, PCI_D3hot);
 	} else {
 		pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
diff --git a/drivers/mmc/host/sdhci-pxa.c b/drivers/mmc/host/sdhci-pxa.c
index fc406ac5d193..5a61208cbc66 100644
--- a/drivers/mmc/host/sdhci-pxa.c
+++ b/drivers/mmc/host/sdhci-pxa.c
@@ -141,6 +141,10 @@ static int __devinit sdhci_pxa_probe(struct platform_device *pdev)
 	if (pdata->quirks)
 		host->quirks |= pdata->quirks;
 
+	/* If slot design supports 8 bit data, indicate this to MMC. */
+	if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
+		host->mmc->caps |= MMC_CAP_8_BIT_DATA;
+
 	ret = sdhci_add_host(host);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add host\n");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 782c0ee3c925..a25db426c910 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1185,18 +1185,32 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	if (host->ops->platform_send_init_74_clocks)
 		host->ops->platform_send_init_74_clocks(host, ios->power_mode);
 
+	/*
+	 * If your platform has 8-bit width support but is not a v3 controller,
+	 * or if it requires special setup code, you should implement that in
+	 * platform_8bit_width().
+	 */
+	if (host->ops->platform_8bit_width)
+		host->ops->platform_8bit_width(host, ios->bus_width);
+	else {
+		ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
+		if (ios->bus_width == MMC_BUS_WIDTH_8) {
+			ctrl &= ~SDHCI_CTRL_4BITBUS;
+			if (host->version >= SDHCI_SPEC_300)
+				ctrl |= SDHCI_CTRL_8BITBUS;
+		} else {
+			if (host->version >= SDHCI_SPEC_300)
+				ctrl &= ~SDHCI_CTRL_8BITBUS;
+			if (ios->bus_width == MMC_BUS_WIDTH_4)
+				ctrl |= SDHCI_CTRL_4BITBUS;
+			else
+				ctrl &= ~SDHCI_CTRL_4BITBUS;
+		}
+		sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
+	}
+
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 
-	if (ios->bus_width == MMC_BUS_WIDTH_8)
-		ctrl |= SDHCI_CTRL_8BITBUS;
-	else
-		ctrl &= ~SDHCI_CTRL_8BITBUS;
-
-	if (ios->bus_width == MMC_BUS_WIDTH_4)
-		ctrl |= SDHCI_CTRL_4BITBUS;
-	else
-		ctrl &= ~SDHCI_CTRL_4BITBUS;
-
 	if ((ios->timing == MMC_TIMING_SD_HS ||
 	     ios->timing == MMC_TIMING_MMC_HS)
 	    && !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT))
@@ -1681,6 +1695,16 @@ int sdhci_resume_host(struct sdhci_host *host)
 
 EXPORT_SYMBOL_GPL(sdhci_resume_host);
 
+void sdhci_enable_irq_wakeups(struct sdhci_host *host)
+{
+	u8 val;
+	val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
+	val |= SDHCI_WAKE_ON_INT;
+	sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
+}
+
+EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
+
 #endif /* CONFIG_PM */
 
 /*****************************************************************************\
@@ -1845,11 +1869,19 @@ int sdhci_add_host(struct sdhci_host *host)
 		mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;
 	else
 		mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;
+
 	mmc->f_max = host->max_clk;
 	mmc->caps |= MMC_CAP_SDIO_IRQ;
 
+	/*
+	 * A controller may support 8-bit width, but the board itself
+	 * might not have the pins brought out.  Boards that support
+	 * 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in
+	 * their platform code before calling sdhci_add_host(), and we
+	 * won't assume 8-bit width for hosts without that CAP.
+	 */
 	if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
-		mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+		mmc->caps |= MMC_CAP_4_BIT_DATA;
 
 	if (caps & SDHCI_CAN_DO_HISPD)
 		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index b7b8a3b28b01..e42d7f00c060 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -76,7 +76,7 @@
 #define   SDHCI_CTRL_ADMA1	0x08
 #define   SDHCI_CTRL_ADMA32	0x10
 #define   SDHCI_CTRL_ADMA64	0x18
-#define  SDHCI_CTRL_8BITBUS	0x20
+#define   SDHCI_CTRL_8BITBUS	0x20
 
 #define SDHCI_POWER_CONTROL	0x29
 #define  SDHCI_POWER_ON		0x01
@@ -87,6 +87,9 @@
 #define SDHCI_BLOCK_GAP_CONTROL	0x2A
 
 #define SDHCI_WAKE_UP_CONTROL	0x2B
+#define  SDHCI_WAKE_ON_INT	0x01
+#define  SDHCI_WAKE_ON_INSERT	0x02
+#define  SDHCI_WAKE_ON_REMOVE	0x04
 
 #define SDHCI_CLOCK_CONTROL	0x2C
 #define  SDHCI_DIVIDER_SHIFT	8
@@ -152,6 +155,7 @@
 #define  SDHCI_CLOCK_BASE_SHIFT	8
 #define  SDHCI_MAX_BLOCK_MASK	0x00030000
 #define  SDHCI_MAX_BLOCK_SHIFT  16
+#define  SDHCI_CAN_DO_8BIT	0x00040000
 #define  SDHCI_CAN_DO_ADMA2	0x00080000
 #define  SDHCI_CAN_DO_ADMA1	0x00100000
 #define  SDHCI_CAN_DO_HISPD	0x00200000
@@ -212,6 +216,8 @@ struct sdhci_ops {
 	unsigned int	(*get_max_clock)(struct sdhci_host *host);
 	unsigned int	(*get_min_clock)(struct sdhci_host *host);
 	unsigned int	(*get_timeout_clock)(struct sdhci_host *host);
+	int		(*platform_8bit_width)(struct sdhci_host *host,
+					       int width);
 	void (*platform_send_init_74_clocks)(struct sdhci_host *host,
 					     u8 power_mode);
 	unsigned int    (*get_ro)(struct sdhci_host *host);
@@ -317,6 +323,7 @@ extern void sdhci_remove_host(struct sdhci_host *host, int dead);
 #ifdef CONFIG_PM
 extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
 extern int sdhci_resume_host(struct sdhci_host *host);
+extern void sdhci_enable_irq_wakeups(struct sdhci_host *host);
 #endif
 
 #endif /* __SDHCI_HW_H */
diff --git a/drivers/mmc/host/ushc.c b/drivers/mmc/host/ushc.c
index b4ead4a13c98..f8f65df9b017 100644
--- a/drivers/mmc/host/ushc.c
+++ b/drivers/mmc/host/ushc.c
@@ -425,7 +425,7 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
 	struct usb_device *usb_dev = interface_to_usbdev(intf);
 	struct mmc_host *mmc;
 	struct ushc_data *ushc;
-	int ret = -ENOMEM;
+	int ret;
 
 	mmc = mmc_alloc_host(sizeof(struct ushc_data), &intf->dev);
 	if (mmc == NULL)
@@ -462,11 +462,15 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
 	mmc->max_blk_count = 511;
 
 	ushc->int_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (ushc->int_urb == NULL)
+	if (ushc->int_urb == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 	ushc->int_data = kzalloc(sizeof(struct ushc_int_data), GFP_KERNEL);
-	if (ushc->int_data == NULL)
+	if (ushc->int_data == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 	usb_fill_int_urb(ushc->int_urb, ushc->usb_dev,
 			 usb_rcvintpipe(usb_dev,
 					intf->cur_altsetting->endpoint[0].desc.bEndpointAddress),
@@ -475,11 +479,15 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
 			 intf->cur_altsetting->endpoint[0].desc.bInterval);
 
 	ushc->cbw_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (ushc->cbw_urb == NULL)
+	if (ushc->cbw_urb == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 	ushc->cbw = kzalloc(sizeof(struct ushc_cbw), GFP_KERNEL);
-	if (ushc->cbw == NULL)
+	if (ushc->cbw == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 	ushc->cbw->signature = USHC_CBW_SIGNATURE;
 
 	usb_fill_bulk_urb(ushc->cbw_urb, ushc->usb_dev, usb_sndbulkpipe(usb_dev, 2),
@@ -487,15 +495,21 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
 			  cbw_callback, ushc);
 
 	ushc->data_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (ushc->data_urb == NULL)
+	if (ushc->data_urb == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 
 	ushc->csw_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (ushc->csw_urb == NULL)
+	if (ushc->csw_urb == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 	ushc->csw = kzalloc(sizeof(struct ushc_cbw), GFP_KERNEL);
-	if (ushc->csw == NULL)
+	if (ushc->csw == NULL) {
+		ret = -ENOMEM;
 		goto err;
+	}
 	usb_fill_bulk_urb(ushc->csw_urb, ushc->usb_dev, usb_rcvbulkpipe(usb_dev, 6),
 			  ushc->csw, sizeof(struct ushc_csw),
 			  csw_callback, ushc);
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index 3c631863bf40..204345be8e62 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/scan.c
@@ -787,16 +787,15 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
 		 * erased, so it became unstable and corrupted, and should be
 		 * erased.
 		 */
-		return 0;
+		err = 0;
+		goto out_unlock;
 	}
 
 	if (err)
-		return err;
+		goto out_unlock;
 
-	if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size)) {
-		mutex_unlock(&ubi->buf_mutex);
-		return 0;
-	}
+	if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size))
+		goto out_unlock;
 
 	ubi_err("PEB %d contains corrupted VID header, and the data does not "
 		"contain all 0xFF, this may be a non-UBI PEB or a severe VID "
@@ -806,8 +805,11 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
 		pnum, ubi->leb_start, ubi->leb_size);
 	ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
 			       ubi->peb_buf1, ubi->leb_size, 1);
+	err = 1;
+
+out_unlock:
 	mutex_unlock(&ubi->buf_mutex);
-	return 1;
+	return err;
 }
 
 /**
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f6668cdaac85..4f1755bddf6b 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2543,10 +2543,10 @@ config PCH_GBE
 	depends on PCI
 	select MII
 	---help---
-	  This is a gigabit ethernet driver for Topcliff PCH.
-	  Topcliff PCH is the platform controller hub that is used in Intel's
+	  This is a gigabit ethernet driver for EG20T PCH.
+	  EG20T PCH is the platform controller hub that is used in Intel's
 	  general embedded platform.
-	  Topcliff PCH has Gigabit Ethernet interface.
+	  EG20T PCH has Gigabit Ethernet interface.
 	  Using this interface, it is able to access system devices connected
 	  to Gigabit Ethernet.
 	  This driver enables Gigabit Ethernet function.
@@ -2945,6 +2945,18 @@ source "drivers/s390/net/Kconfig"
 
 source "drivers/net/caif/Kconfig"
 
+config TILE_NET
+	tristate "Tilera GBE/XGBE network driver support"
+	depends on TILE
+	default y
+	select CRC32
+	help
+	  This is a standard Linux network device driver for the
+	  on-chip Tilera Gigabit Ethernet and XAUI interfaces.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called tile_net.
+
 config XEN_NETDEV_FRONTEND
 	tristate "Xen network device frontend driver"
 	depends on XEN
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 652fc6b98039..b90738d13994 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -301,3 +301,4 @@ obj-$(CONFIG_CAIF) += caif/
 
 obj-$(CONFIG_OCTEON_MGMT_ETHERNET) += octeon/
 obj-$(CONFIG_PCH_GBE) += pch_gbe/
+obj-$(CONFIG_TILE_NET) += tile/
diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
index 43489f89c142..53eff9ba6e95 100644
--- a/drivers/net/au1000_eth.c
+++ b/drivers/net/au1000_eth.c
@@ -155,10 +155,10 @@ static void au1000_enable_mac(struct net_device *dev, int force_reset)
 	spin_lock_irqsave(&aup->lock, flags);
 
 	if (force_reset || (!aup->mac_enabled)) {
-		writel(MAC_EN_CLOCK_ENABLE, &aup->enable);
+		writel(MAC_EN_CLOCK_ENABLE, aup->enable);
 		au_sync_delay(2);
 		writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
-				| MAC_EN_CLOCK_ENABLE), &aup->enable);
+				| MAC_EN_CLOCK_ENABLE), aup->enable);
 		au_sync_delay(2);
 
 		aup->mac_enabled = 1;
@@ -503,9 +503,9 @@ static void au1000_reset_mac_unlocked(struct net_device *dev)
 
 	au1000_hard_stop(dev);
 
-	writel(MAC_EN_CLOCK_ENABLE, &aup->enable);
+	writel(MAC_EN_CLOCK_ENABLE, aup->enable);
 	au_sync_delay(2);
-	writel(0, &aup->enable);
+	writel(0, aup->enable);
 	au_sync_delay(2);
 
 	aup->tx_full = 0;
@@ -1119,7 +1119,7 @@ static int __devinit au1000_probe(struct platform_device *pdev)
 	/* set a random MAC now in case platform_data doesn't provide one */
 	random_ether_addr(dev->dev_addr);
 
-	writel(0, &aup->enable);
+	writel(0, aup->enable);
 	aup->mac_enabled = 0;
 
 	pd = pdev->dev.platform_data;
diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c
index c3449bbc585a..d887a76cd39d 100644
--- a/drivers/net/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/cxgb4vf/cxgb4vf_main.c
@@ -816,40 +816,48 @@ static struct net_device_stats *cxgb4vf_get_stats(struct net_device *dev)
 }
 
 /*
- * Collect up to maxaddrs worth of a netdevice's unicast addresses into an
- * array of addrss pointers and return the number collected.
+ * Collect up to maxaddrs worth of a netdevice's unicast addresses, starting
+ * at a specified offset within the list, into an array of addrss pointers and
+ * return the number collected.
  */
-static inline int collect_netdev_uc_list_addrs(const struct net_device *dev,
-					       const u8 **addr,
-					       unsigned int maxaddrs)
+static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device *dev,
+							const u8 **addr,
+							unsigned int offset,
+							unsigned int maxaddrs)
 {
+	unsigned int index = 0;
 	unsigned int naddr = 0;
 	const struct netdev_hw_addr *ha;
 
-	for_each_dev_addr(dev, ha) {
-		addr[naddr++] = ha->addr;
-		if (naddr >= maxaddrs)
-			break;
-	}
+	for_each_dev_addr(dev, ha)
+		if (index++ >= offset) {
+			addr[naddr++] = ha->addr;
+			if (naddr >= maxaddrs)
+				break;
+		}
 	return naddr;
 }
 
 /*
- * Collect up to maxaddrs worth of a netdevice's multicast addresses into an
- * array of addrss pointers and return the number collected.
+ * Collect up to maxaddrs worth of a netdevice's multicast addresses, starting
+ * at a specified offset within the list, into an array of addrss pointers and
+ * return the number collected.
  */
-static inline int collect_netdev_mc_list_addrs(const struct net_device *dev,
-					       const u8 **addr,
-					       unsigned int maxaddrs)
+static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device *dev,
+							const u8 **addr,
+							unsigned int offset,
+							unsigned int maxaddrs)
 {
+	unsigned int index = 0;
 	unsigned int naddr = 0;
 	const struct netdev_hw_addr *ha;
 
-	netdev_for_each_mc_addr(ha, dev) {
-		addr[naddr++] = ha->addr;
-		if (naddr >= maxaddrs)
-			break;
-	}
+	netdev_for_each_mc_addr(ha, dev)
+		if (index++ >= offset) {
+			addr[naddr++] = ha->addr;
+			if (naddr >= maxaddrs)
+				break;
+		}
 	return naddr;
 }
 
@@ -862,16 +870,20 @@ static int set_addr_filters(const struct net_device *dev, bool sleep)
 	u64 mhash = 0;
 	u64 uhash = 0;
 	bool free = true;
-	u16 filt_idx[7];
+	unsigned int offset, naddr;
 	const u8 *addr[7];
-	int ret, naddr = 0;
+	int ret;
 	const struct port_info *pi = netdev_priv(dev);
 
 	/* first do the secondary unicast addresses */
-	naddr = collect_netdev_uc_list_addrs(dev, addr, ARRAY_SIZE(addr));
-	if (naddr > 0) {
+	for (offset = 0; ; offset += naddr) {
+		naddr = collect_netdev_uc_list_addrs(dev, addr, offset,
+						     ARRAY_SIZE(addr));
+		if (naddr == 0)
+			break;
+
 		ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
-					  naddr, addr, filt_idx, &uhash, sleep);
+					  naddr, addr, NULL, &uhash, sleep);
 		if (ret < 0)
 			return ret;
 
@@ -879,12 +891,17 @@ static int set_addr_filters(const struct net_device *dev, bool sleep)
 	}
 
 	/* next set up the multicast addresses */
-	naddr = collect_netdev_mc_list_addrs(dev, addr, ARRAY_SIZE(addr));
-	if (naddr > 0) {
+	for (offset = 0; ; offset += naddr) {
+		naddr = collect_netdev_mc_list_addrs(dev, addr, offset,
+						     ARRAY_SIZE(addr));
+		if (naddr == 0)
+			break;
+
 		ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
-					  naddr, addr, filt_idx, &mhash, sleep);
+					  naddr, addr, NULL, &mhash, sleep);
 		if (ret < 0)
 			return ret;
+		free = false;
 	}
 
 	return t4vf_set_addr_hash(pi->adapter, pi->viid, uhash != 0,
diff --git a/drivers/net/cxgb4vf/t4vf_hw.c b/drivers/net/cxgb4vf/t4vf_hw.c
index e306c20dfaee..19520afe1a12 100644
--- a/drivers/net/cxgb4vf/t4vf_hw.c
+++ b/drivers/net/cxgb4vf/t4vf_hw.c
@@ -1014,48 +1014,72 @@ int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free,
 			unsigned int naddr, const u8 **addr, u16 *idx,
 			u64 *hash, bool sleep_ok)
 {
-	int i, ret;
+	int offset, ret = 0;
+	unsigned nfilters = 0;
+	unsigned int rem = naddr;
 	struct fw_vi_mac_cmd cmd, rpl;
-	struct fw_vi_mac_exact *p;
-	size_t len16;
 
-	if (naddr > ARRAY_SIZE(cmd.u.exact))
+	if (naddr > FW_CLS_TCAM_NUM_ENTRIES)
 		return -EINVAL;
-	len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
-				      u.exact[naddr]), 16);
 
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) |
-				     FW_CMD_REQUEST |
-				     FW_CMD_WRITE |
-				     (free ? FW_CMD_EXEC : 0) |
-				     FW_VI_MAC_CMD_VIID(viid));
-	cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) |
-					    FW_CMD_LEN16(len16));
+	for (offset = 0; offset < naddr; /**/) {
+		unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact)
+					 ? rem
+					 : ARRAY_SIZE(cmd.u.exact));
+		size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
+						     u.exact[fw_naddr]), 16);
+		struct fw_vi_mac_exact *p;
+		int i;
 
-	for (i = 0, p = cmd.u.exact; i < naddr; i++, p++) {
-		p->valid_to_idx =
-			cpu_to_be16(FW_VI_MAC_CMD_VALID |
-				    FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC));
-		memcpy(p->macaddr, addr[i], sizeof(p->macaddr));
+		memset(&cmd, 0, sizeof(cmd));
+		cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) |
+					     FW_CMD_REQUEST |
+					     FW_CMD_WRITE |
+					     (free ? FW_CMD_EXEC : 0) |
+					     FW_VI_MAC_CMD_VIID(viid));
+		cmd.freemacs_to_len16 =
+			cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) |
+				    FW_CMD_LEN16(len16));
+
+		for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
+			p->valid_to_idx = cpu_to_be16(
+				FW_VI_MAC_CMD_VALID |
+				FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC));
+			memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
+		}
+
+
+		ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl,
+					sleep_ok);
+		if (ret && ret != -ENOMEM)
+			break;
+
+		for (i = 0, p = rpl.u.exact; i < fw_naddr; i++, p++) {
+			u16 index = FW_VI_MAC_CMD_IDX_GET(
+				be16_to_cpu(p->valid_to_idx));
+
+			if (idx)
+				idx[offset+i] =
+					(index >= FW_CLS_TCAM_NUM_ENTRIES
+					 ? 0xffff
+					 : index);
+			if (index < FW_CLS_TCAM_NUM_ENTRIES)
+				nfilters++;
+			else if (hash)
+				*hash |= (1ULL << hash_mac_addr(addr[offset+i]));
+		}
+
+		free = false;
+		offset += fw_naddr;
+		rem -= fw_naddr;
 	}
 
-	ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, sleep_ok);
-	if (ret)
-		return ret;
-
-	for (i = 0, p = rpl.u.exact; i < naddr; i++, p++) {
-		u16 index = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx));
-
-		if (idx)
-			idx[i] = (index >= FW_CLS_TCAM_NUM_ENTRIES
-				  ? 0xffff
-				  : index);
-		if (index < FW_CLS_TCAM_NUM_ENTRIES)
-			ret++;
-		else if (hash)
-			*hash |= (1 << hash_mac_addr(addr[i]));
-	}
+	/*
+	 * If there were no errors or we merely ran out of room in our MAC
+	 * address arena, return the number of filters actually written.
+	 */
+	if (ret == 0 || ret == -ENOMEM)
+		ret = nfilters;
 	return ret;
 }
 
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 182b2a7be8dc..3d0af08483a1 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -400,6 +400,7 @@ static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 			skb_arr_rq1[index] = netdev_alloc_skb(dev,
 							      EHEA_L_PKT_SIZE);
 			if (!skb_arr_rq1[index]) {
+				ehea_info("Unable to allocate enough skb in the array\n");
 				pr->rq1_skba.os_skbs = fill_wqes - i;
 				break;
 			}
@@ -422,13 +423,20 @@ static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 	struct net_device *dev = pr->port->netdev;
 	int i;
 
-	for (i = 0; i < pr->rq1_skba.len; i++) {
+	if (nr_rq1a > pr->rq1_skba.len) {
+		ehea_error("NR_RQ1A bigger than skb array len\n");
+		return;
+	}
+
+	for (i = 0; i < nr_rq1a; i++) {
 		skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
-		if (!skb_arr_rq1[i])
+		if (!skb_arr_rq1[i]) {
+			ehea_info("No enough memory to allocate skb array\n");
 			break;
+		}
 	}
 	/* Ring doorbell */
-	ehea_update_rq1a(pr->qp, nr_rq1a);
+	ehea_update_rq1a(pr->qp, i);
 }
 
 static int ehea_refill_rq_def(struct ehea_port_res *pr,
@@ -735,8 +743,10 @@ static int ehea_proc_rwqes(struct net_device *dev,
 
 					skb = netdev_alloc_skb(dev,
 							       EHEA_L_PKT_SIZE);
-					if (!skb)
+					if (!skb) {
+						ehea_info("Not enough memory to allocate skb\n");
 						break;
+					}
 				}
 				skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
 						 cqe->num_bytes_transfered - 4);
diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c
index 472056b47440..03a1d280105f 100644
--- a/drivers/net/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/pch_gbe/pch_gbe_main.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 1999 - 2010 Intel Corporation.
- * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
+ * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
  *
  * This code was derived from the Intel e1000e Linux driver.
  *
@@ -2464,8 +2464,8 @@ static void __exit pch_gbe_exit_module(void)
 module_init(pch_gbe_init_module);
 module_exit(pch_gbe_exit_module);
 
-MODULE_DESCRIPTION("OKI semiconductor PCH Gigabit ethernet Driver");
-MODULE_AUTHOR("OKI semiconductor, <masa-korg@dsn.okisemi.com>");
+MODULE_DESCRIPTION("EG20T PCH Gigabit ethernet Driver");
+MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
 MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id);
diff --git a/drivers/net/pch_gbe/pch_gbe_param.c b/drivers/net/pch_gbe/pch_gbe_param.c
index 2510146fc560..ef0996a0eaaa 100644
--- a/drivers/net/pch_gbe/pch_gbe_param.c
+++ b/drivers/net/pch_gbe/pch_gbe_param.c
@@ -434,8 +434,8 @@ void pch_gbe_check_options(struct pch_gbe_adapter *adapter)
 			.err  = "using default of "
 				__MODULE_STRING(PCH_GBE_DEFAULT_TXD),
 			.def  = PCH_GBE_DEFAULT_TXD,
-			.arg  = { .r = { .min = PCH_GBE_MIN_TXD } },
-			.arg  = { .r = { .max = PCH_GBE_MAX_TXD } }
+			.arg  = { .r = { .min = PCH_GBE_MIN_TXD,
+					 .max = PCH_GBE_MAX_TXD } }
 		};
 		struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring;
 		tx_ring->count = TxDescriptors;
@@ -450,8 +450,8 @@ void pch_gbe_check_options(struct pch_gbe_adapter *adapter)
 			.err  = "using default of "
 				__MODULE_STRING(PCH_GBE_DEFAULT_RXD),
 			.def  = PCH_GBE_DEFAULT_RXD,
-			.arg  = { .r = { .min = PCH_GBE_MIN_RXD } },
-			.arg  = { .r = { .max = PCH_GBE_MAX_RXD } }
+			.arg  = { .r = { .min = PCH_GBE_MIN_RXD,
+					 .max = PCH_GBE_MAX_RXD } }
 		};
 		struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring;
 		rx_ring->count = RxDescriptors;
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 09cf56d0416a..39659976a1ac 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -2584,16 +2584,16 @@ ppp_create_interface(struct net *net, int unit, int *retp)
 	 */
 	dev_net_set(dev, net);
 
-	ret = -EEXIST;
 	mutex_lock(&pn->all_ppp_mutex);
 
 	if (unit < 0) {
 		unit = unit_get(&pn->units_idr, ppp);
 		if (unit < 0) {
-			*retp = unit;
+			ret = unit;
 			goto out2;
 		}
 	} else {
+		ret = -EEXIST;
 		if (unit_find(&pn->units_idr, unit))
 			goto out2; /* unit already exists */
 		/*
@@ -2668,10 +2668,10 @@ static void ppp_shutdown_interface(struct ppp *ppp)
 		ppp->closing = 1;
 		ppp_unlock(ppp);
 		unregister_netdev(ppp->dev);
+		unit_put(&pn->units_idr, ppp->file.index);
 	} else
 		ppp_unlock(ppp);
 
-	unit_put(&pn->units_idr, ppp->file.index);
 	ppp->file.dead = 1;
 	ppp->owner = NULL;
 	wake_up_interruptible(&ppp->file.rwait);
@@ -2859,8 +2859,7 @@ static void __exit ppp_cleanup(void)
  * by holding all_ppp_mutex
  */
 
-/* associate pointer with specified number */
-static int unit_set(struct idr *p, void *ptr, int n)
+static int __unit_alloc(struct idr *p, void *ptr, int n)
 {
 	int unit, err;
 
@@ -2871,10 +2870,24 @@ again:
 	}
 
 	err = idr_get_new_above(p, ptr, n, &unit);
-	if (err == -EAGAIN)
-		goto again;
+	if (err < 0) {
+		if (err == -EAGAIN)
+			goto again;
+		return err;
+	}
 
-	if (unit != n) {
+	return unit;
+}
+
+/* associate pointer with specified number */
+static int unit_set(struct idr *p, void *ptr, int n)
+{
+	int unit;
+
+	unit = __unit_alloc(p, ptr, n);
+	if (unit < 0)
+		return unit;
+	else if (unit != n) {
 		idr_remove(p, unit);
 		return -EINVAL;
 	}
@@ -2885,19 +2898,7 @@ again:
 /* get new free unit number and associate pointer with it */
 static int unit_get(struct idr *p, void *ptr)
 {
-	int unit, err;
-
-again:
-	if (!idr_pre_get(p, GFP_KERNEL)) {
-		printk(KERN_ERR "PPP: No free memory for idr\n");
-		return -ENOMEM;
-	}
-
-	err = idr_get_new_above(p, ptr, 0, &unit);
-	if (err == -EAGAIN)
-		goto again;
-
-	return unit;
+	return __unit_alloc(p, ptr, 0);
 }
 
 /* put unit number back to a pool */
diff --git a/drivers/net/tile/Makefile b/drivers/net/tile/Makefile
new file mode 100644
index 000000000000..f634f142cab4
--- /dev/null
+++ b/drivers/net/tile/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the TILE on-chip networking support.
+#
+
+obj-$(CONFIG_TILE_NET) += tile_net.o
+ifdef CONFIG_TILEGX
+tile_net-objs := tilegx.o mpipe.o iorpc_mpipe.o dma_queue.o
+else
+tile_net-objs := tilepro.o
+endif
diff --git a/drivers/net/tile/tilepro.c b/drivers/net/tile/tilepro.c
new file mode 100644
index 000000000000..0e6bac5ec65b
--- /dev/null
+++ b/drivers/net/tile/tilepro.c
@@ -0,0 +1,2406 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>      /* printk() */
+#include <linux/slab.h>        /* kmalloc() */
+#include <linux/errno.h>       /* error codes */
+#include <linux/types.h>       /* size_t */
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/skbuff.h>
+#include <linux/ioctl.h>
+#include <linux/cdev.h>
+#include <linux/hugetlb.h>
+#include <linux/in6.h>
+#include <linux/timer.h>
+#include <linux/io.h>
+#include <asm/checksum.h>
+#include <asm/homecache.h>
+
+#include <hv/drv_xgbe_intf.h>
+#include <hv/drv_xgbe_impl.h>
+#include <hv/hypervisor.h>
+#include <hv/netio_intf.h>
+
+/* For TSO */
+#include <linux/ip.h>
+#include <linux/tcp.h>
+
+
+/* There is no singlethread_cpu, so schedule work on the current cpu. */
+#define singlethread_cpu -1
+
+
+/*
+ * First, "tile_net_init_module()" initializes all four "devices" which
+ * can be used by linux.
+ *
+ * Then, "ifconfig DEVICE up" calls "tile_net_open()", which analyzes
+ * the network cpus, then uses "tile_net_open_aux()" to initialize
+ * LIPP/LEPP, and then uses "tile_net_open_inner()" to register all
+ * the tiles, provide buffers to LIPP, allow ingress to start, and
+ * turn on hypervisor interrupt handling (and NAPI) on all tiles.
+ *
+ * If registration fails due to the link being down, then "retry_work"
+ * is used to keep calling "tile_net_open_inner()" until it succeeds.
+ *
+ * If "ifconfig DEVICE down" is called, it uses "tile_net_stop()" to
+ * stop egress, drain the LIPP buffers, unregister all the tiles, stop
+ * LIPP/LEPP, and wipe the LEPP queue.
+ *
+ * We start out with the ingress interrupt enabled on each CPU.  When
+ * this interrupt fires, we disable it, and call "napi_schedule()".
+ * This will cause "tile_net_poll()" to be called, which will pull
+ * packets from the netio queue, filtering them out, or passing them
+ * to "netif_receive_skb()".  If our budget is exhausted, we will
+ * return, knowing we will be called again later.  Otherwise, we
+ * reenable the ingress interrupt, and call "napi_complete()".
+ *
+ *
+ * NOTE: The use of "native_driver" ensures that EPP exists, and that
+ * "epp_sendv" is legal, and that "LIPP" is being used.
+ *
+ * NOTE: Failing to free completions for an arbitrarily long time
+ * (which is defined to be illegal) does in fact cause bizarre
+ * problems.  The "egress_timer" helps prevent this from happening.
+ *
+ * NOTE: The egress code can be interrupted by the interrupt handler.
+ */
+
+
+/* HACK: Allow use of "jumbo" packets. */
+/* This should be 1500 if "jumbo" is not set in LIPP. */
+/* This should be at most 10226 (10240 - 14) if "jumbo" is set in LIPP. */
+/* ISSUE: This has not been thoroughly tested (except at 1500). */
+#define TILE_NET_MTU 1500
+
+/* HACK: Define to support GSO. */
+/* ISSUE: This may actually hurt performance of the TCP blaster. */
+/* #define TILE_NET_GSO */
+
+/* Define this to collapse "duplicate" acks. */
+/* #define IGNORE_DUP_ACKS */
+
+/* HACK: Define this to verify incoming packets. */
+/* #define TILE_NET_VERIFY_INGRESS */
+
+/* Use 3000 to enable the Linux Traffic Control (QoS) layer, else 0. */
+#define TILE_NET_TX_QUEUE_LEN 0
+
+/* Define to dump packets (prints out the whole packet on tx and rx). */
+/* #define TILE_NET_DUMP_PACKETS */
+
+/* Define to enable debug spew (all PDEBUG's are enabled). */
+/* #define TILE_NET_DEBUG */
+
+
+/* Define to activate paranoia checks. */
+/* #define TILE_NET_PARANOIA */
+
+/* Default transmit lockup timeout period, in jiffies. */
+#define TILE_NET_TIMEOUT (5 * HZ)
+
+/* Default retry interval for bringing up the NetIO interface, in jiffies. */
+#define TILE_NET_RETRY_INTERVAL (5 * HZ)
+
+/* Number of ports (xgbe0, xgbe1, gbe0, gbe1). */
+#define TILE_NET_DEVS 4
+
+
+
+/* Paranoia. */
+#if NET_IP_ALIGN != LIPP_PACKET_PADDING
+#error "NET_IP_ALIGN must match LIPP_PACKET_PADDING."
+#endif
+
+
+/* Debug print. */
+#ifdef TILE_NET_DEBUG
+#define PDEBUG(fmt, args...) net_printk(fmt, ## args)
+#else
+#define PDEBUG(fmt, args...)
+#endif
+
+
+MODULE_AUTHOR("Tilera");
+MODULE_LICENSE("GPL");
+
+
+#define IS_MULTICAST(mac_addr) \
+	(((u8 *)(mac_addr))[0] & 0x01)
+
+#define IS_BROADCAST(mac_addr) \
+	(((u16 *)(mac_addr))[0] == 0xffff)
+
+
+/*
+ * Queue of incoming packets for a specific cpu and device.
+ *
+ * Includes a pointer to the "system" data, and the actual "user" data.
+ */
+struct tile_netio_queue {
+	netio_queue_impl_t *__system_part;
+	netio_queue_user_impl_t __user_part;
+
+};
+
+
+/*
+ * Statistics counters for a specific cpu and device.
+ */
+struct tile_net_stats_t {
+	u32 rx_packets;
+	u32 rx_bytes;
+	u32 tx_packets;
+	u32 tx_bytes;
+};
+
+
+/*
+ * Info for a specific cpu and device.
+ *
+ * ISSUE: There is a "dev" pointer in "napi" as well.
+ */
+struct tile_net_cpu {
+	/* The NAPI struct. */
+	struct napi_struct napi;
+	/* Packet queue. */
+	struct tile_netio_queue queue;
+	/* Statistics. */
+	struct tile_net_stats_t stats;
+	/* ISSUE: Is this needed? */
+	bool napi_enabled;
+	/* True if this tile has succcessfully registered with the IPP. */
+	bool registered;
+	/* True if the link was down last time we tried to register. */
+	bool link_down;
+	/* True if "egress_timer" is scheduled. */
+	bool egress_timer_scheduled;
+	/* Number of small sk_buffs which must still be provided. */
+	unsigned int num_needed_small_buffers;
+	/* Number of large sk_buffs which must still be provided. */
+	unsigned int num_needed_large_buffers;
+	/* A timer for handling egress completions. */
+	struct timer_list egress_timer;
+};
+
+
+/*
+ * Info for a specific device.
+ */
+struct tile_net_priv {
+	/* Our network device. */
+	struct net_device *dev;
+	/* The actual egress queue. */
+	lepp_queue_t *epp_queue;
+	/* Protects "epp_queue->cmd_tail" and "epp_queue->comp_tail" */
+	spinlock_t cmd_lock;
+	/* Protects "epp_queue->comp_head". */
+	spinlock_t comp_lock;
+	/* The hypervisor handle for this interface. */
+	int hv_devhdl;
+	/* The intr bit mask that IDs this device. */
+	u32 intr_id;
+	/* True iff "tile_net_open_aux()" has succeeded. */
+	int partly_opened;
+	/* True iff "tile_net_open_inner()" has succeeded. */
+	int fully_opened;
+	/* Effective network cpus. */
+	struct cpumask network_cpus_map;
+	/* Number of network cpus. */
+	int network_cpus_count;
+	/* Credits per network cpu. */
+	int network_cpus_credits;
+	/* Network stats. */
+	struct net_device_stats stats;
+	/* For NetIO bringup retries. */
+	struct delayed_work retry_work;
+	/* Quick access to per cpu data. */
+	struct tile_net_cpu *cpu[NR_CPUS];
+};
+
+
+/*
+ * The actual devices (xgbe0, xgbe1, gbe0, gbe1).
+ */
+static struct net_device *tile_net_devs[TILE_NET_DEVS];
+
+/*
+ * The "tile_net_cpu" structures for each device.
+ */
+static DEFINE_PER_CPU(struct tile_net_cpu, hv_xgbe0);
+static DEFINE_PER_CPU(struct tile_net_cpu, hv_xgbe1);
+static DEFINE_PER_CPU(struct tile_net_cpu, hv_gbe0);
+static DEFINE_PER_CPU(struct tile_net_cpu, hv_gbe1);
+
+
+/*
+ * True if "network_cpus" was specified.
+ */
+static bool network_cpus_used;
+
+/*
+ * The actual cpus in "network_cpus".
+ */
+static struct cpumask network_cpus_map;
+
+
+
+#ifdef TILE_NET_DEBUG
+/*
+ * printk with extra stuff.
+ *
+ * We print the CPU we're running in brackets.
+ */
+static void net_printk(char *fmt, ...)
+{
+	int i;
+	int len;
+	va_list args;
+	static char buf[256];
+
+	len = sprintf(buf, "tile_net[%2.2d]: ", smp_processor_id());
+	va_start(args, fmt);
+	i = vscnprintf(buf + len, sizeof(buf) - len - 1, fmt, args);
+	va_end(args);
+	buf[255] = '\0';
+	pr_notice(buf);
+}
+#endif
+
+
+#ifdef TILE_NET_DUMP_PACKETS
+/*
+ * Dump a packet.
+ */
+static void dump_packet(unsigned char *data, unsigned long length, char *s)
+{
+	unsigned long i;
+	static unsigned int count;
+
+	pr_info("dump_packet(data %p, length 0x%lx s %s count 0x%x)\n",
+	       data, length, s, count++);
+
+	pr_info("\n");
+
+	for (i = 0; i < length; i++) {
+		if ((i & 0xf) == 0)
+			sprintf(buf, "%8.8lx:", i);
+		sprintf(buf + strlen(buf), " %2.2x", data[i]);
+		if ((i & 0xf) == 0xf || i == length - 1)
+			pr_info("%s\n", buf);
+	}
+}
+#endif
+
+
+/*
+ * Provide support for the __netio_fastio1() swint
+ * (see <hv/drv_xgbe_intf.h> for how it is used).
+ *
+ * The fastio swint2 call may clobber all the caller-saved registers.
+ * It rarely clobbers memory, but we allow for the possibility in
+ * the signature just to be on the safe side.
+ *
+ * Also, gcc doesn't seem to allow an input operand to be
+ * clobbered, so we fake it with dummy outputs.
+ *
+ * This function can't be static because of the way it is declared
+ * in the netio header.
+ */
+inline int __netio_fastio1(u32 fastio_index, u32 arg0)
+{
+	long result, clobber_r1, clobber_r10;
+	asm volatile("swint2"
+		     : "=R00" (result),
+		       "=R01" (clobber_r1), "=R10" (clobber_r10)
+		     : "R10" (fastio_index), "R01" (arg0)
+		     : "memory", "r2", "r3", "r4",
+		       "r5", "r6", "r7", "r8", "r9",
+		       "r11", "r12", "r13", "r14",
+		       "r15", "r16", "r17", "r18", "r19",
+		       "r20", "r21", "r22", "r23", "r24",
+		       "r25", "r26", "r27", "r28", "r29");
+	return result;
+}
+
+
+/*
+ * Provide a linux buffer to LIPP.
+ */
+static void tile_net_provide_linux_buffer(struct tile_net_cpu *info,
+					  void *va, bool small)
+{
+	struct tile_netio_queue *queue = &info->queue;
+
+	/* Convert "va" and "small" to "linux_buffer_t". */
+	unsigned int buffer = ((unsigned int)(__pa(va) >> 7) << 1) + small;
+
+	__netio_fastio_free_buffer(queue->__user_part.__fastio_index, buffer);
+}
+
+
+/*
+ * Provide a linux buffer for LIPP.
+ */
+static bool tile_net_provide_needed_buffer(struct tile_net_cpu *info,
+					   bool small)
+{
+	/* ISSUE: What should we use here? */
+	unsigned int large_size = NET_IP_ALIGN + TILE_NET_MTU + 100;
+
+	/* Round up to ensure to avoid "false sharing" with last cache line. */
+	unsigned int buffer_size =
+		 (((small ? LIPP_SMALL_PACKET_SIZE : large_size) +
+		   CHIP_L2_LINE_SIZE() - 1) & -CHIP_L2_LINE_SIZE());
+
+	/*
+	 * ISSUE: Since CPAs are 38 bits, and we can only encode the
+	 * high 31 bits in a "linux_buffer_t", the low 7 bits must be
+	 * zero, and thus, we must align the actual "va" mod 128.
+	 */
+	const unsigned long align = 128;
+
+	struct sk_buff *skb;
+	void *va;
+
+	struct sk_buff **skb_ptr;
+
+	/* Note that "dev_alloc_skb()" adds NET_SKB_PAD more bytes, */
+	/* and also "reserves" that many bytes. */
+	/* ISSUE: Can we "share" the NET_SKB_PAD bytes with "skb_ptr"? */
+	int len = sizeof(*skb_ptr) + align + buffer_size;
+
+	while (1) {
+
+		/* Allocate (or fail). */
+		skb = dev_alloc_skb(len);
+		if (skb == NULL)
+			return false;
+
+		/* Make room for a back-pointer to 'skb'. */
+		skb_reserve(skb, sizeof(*skb_ptr));
+
+		/* Make sure we are aligned. */
+		skb_reserve(skb, -(long)skb->data & (align - 1));
+
+		/* This address is given to IPP. */
+		va = skb->data;
+
+		if (small)
+			break;
+
+		/* ISSUE: This has never been observed! */
+		/* Large buffers must not span a huge page. */
+		if (((((long)va & ~HPAGE_MASK) + 1535) & HPAGE_MASK) == 0)
+			break;
+		pr_err("Leaking unaligned linux buffer at %p.\n", va);
+	}
+
+	/* Skip two bytes to satisfy LIPP assumptions. */
+	/* Note that this aligns IP on a 16 byte boundary. */
+	/* ISSUE: Do this when the packet arrives? */
+	skb_reserve(skb, NET_IP_ALIGN);
+
+	/* Save a back-pointer to 'skb'. */
+	skb_ptr = va - sizeof(*skb_ptr);
+	*skb_ptr = skb;
+
+	/* Invalidate the packet buffer. */
+	if (!hash_default)
+		__inv_buffer(skb->data, buffer_size);
+
+	/* Make sure "skb_ptr" has been flushed. */
+	__insn_mf();
+
+#ifdef TILE_NET_PARANOIA
+#if CHIP_HAS_CBOX_HOME_MAP()
+	if (hash_default) {
+		HV_PTE pte = *virt_to_pte(current->mm, (unsigned long)va);
+		if (hv_pte_get_mode(pte) != HV_PTE_MODE_CACHE_HASH_L3)
+			panic("Non-coherent ingress buffer!");
+	}
+#endif
+#endif
+
+	/* Provide the new buffer. */
+	tile_net_provide_linux_buffer(info, va, small);
+
+	return true;
+}
+
+
+/*
+ * Provide linux buffers for LIPP.
+ */
+static void tile_net_provide_needed_buffers(struct tile_net_cpu *info)
+{
+	while (info->num_needed_small_buffers != 0) {
+		if (!tile_net_provide_needed_buffer(info, true))
+			goto oops;
+		info->num_needed_small_buffers--;
+	}
+
+	while (info->num_needed_large_buffers != 0) {
+		if (!tile_net_provide_needed_buffer(info, false))
+			goto oops;
+		info->num_needed_large_buffers--;
+	}
+
+	return;
+
+oops:
+
+	/* Add a description to the page allocation failure dump. */
+	pr_notice("Could not provide a linux buffer to LIPP.\n");
+}
+
+
+/*
+ * Grab some LEPP completions, and store them in "comps", of size
+ * "comps_size", and return the number of completions which were
+ * stored, so the caller can free them.
+ *
+ * If "pending" is not NULL, it will be set to true if there might
+ * still be some pending completions caused by this tile, else false.
+ */
+static unsigned int tile_net_lepp_grab_comps(struct net_device *dev,
+					     struct sk_buff *comps[],
+					     unsigned int comps_size,
+					     bool *pending)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+
+	lepp_queue_t *eq = priv->epp_queue;
+
+	unsigned int n = 0;
+
+	unsigned int comp_head;
+	unsigned int comp_busy;
+	unsigned int comp_tail;
+
+	spin_lock(&priv->comp_lock);
+
+	comp_head = eq->comp_head;
+	comp_busy = eq->comp_busy;
+	comp_tail = eq->comp_tail;
+
+	while (comp_head != comp_busy && n < comps_size) {
+		comps[n++] = eq->comps[comp_head];
+		LEPP_QINC(comp_head);
+	}
+
+	if (pending != NULL)
+		*pending = (comp_head != comp_tail);
+
+	eq->comp_head = comp_head;
+
+	spin_unlock(&priv->comp_lock);
+
+	return n;
+}
+
+
+/*
+ * Make sure the egress timer is scheduled.
+ *
+ * Note that we use "schedule if not scheduled" logic instead of the more
+ * obvious "reschedule" logic, because "reschedule" is fairly expensive.
+ */
+static void tile_net_schedule_egress_timer(struct tile_net_cpu *info)
+{
+	if (!info->egress_timer_scheduled) {
+		mod_timer_pinned(&info->egress_timer, jiffies + 1);
+		info->egress_timer_scheduled = true;
+	}
+}
+
+
+/*
+ * The "function" for "info->egress_timer".
+ *
+ * This timer will reschedule itself as long as there are any pending
+ * completions expected (on behalf of any tile).
+ *
+ * ISSUE: Realistically, will the timer ever stop scheduling itself?
+ *
+ * ISSUE: This timer is almost never actually needed, so just use a global
+ * timer that can run on any tile.
+ *
+ * ISSUE: Maybe instead track number of expected completions, and free
+ * only that many, resetting to zero if "pending" is ever false.
+ */
+static void tile_net_handle_egress_timer(unsigned long arg)
+{
+	struct tile_net_cpu *info = (struct tile_net_cpu *)arg;
+	struct net_device *dev = info->napi.dev;
+
+	struct sk_buff *olds[32];
+	unsigned int wanted = 32;
+	unsigned int i, nolds = 0;
+	bool pending;
+
+	/* The timer is no longer scheduled. */
+	info->egress_timer_scheduled = false;
+
+	nolds = tile_net_lepp_grab_comps(dev, olds, wanted, &pending);
+
+	for (i = 0; i < nolds; i++)
+		kfree_skb(olds[i]);
+
+	/* Reschedule timer if needed. */
+	if (pending)
+		tile_net_schedule_egress_timer(info);
+}
+
+
+#ifdef IGNORE_DUP_ACKS
+
+/*
+ * Help detect "duplicate" ACKs.  These are sequential packets (for a
+ * given flow) which are exactly 66 bytes long, sharing everything but
+ * ID=2@0x12, Hsum=2@0x18, Ack=4@0x2a, WinSize=2@0x30, Csum=2@0x32,
+ * Tstamps=10@0x38.  The ID's are +1, the Hsum's are -1, the Ack's are
+ * +N, and the Tstamps are usually identical.
+ *
+ * NOTE: Apparently truly duplicate acks (with identical "ack" values),
+ * should not be collapsed, as they are used for some kind of flow control.
+ */
+static bool is_dup_ack(char *s1, char *s2, unsigned int len)
+{
+	int i;
+
+	unsigned long long ignorable = 0;
+
+	/* Identification. */
+	ignorable |= (1ULL << 0x12);
+	ignorable |= (1ULL << 0x13);
+
+	/* Header checksum. */
+	ignorable |= (1ULL << 0x18);
+	ignorable |= (1ULL << 0x19);
+
+	/* ACK. */
+	ignorable |= (1ULL << 0x2a);
+	ignorable |= (1ULL << 0x2b);
+	ignorable |= (1ULL << 0x2c);
+	ignorable |= (1ULL << 0x2d);
+
+	/* WinSize. */
+	ignorable |= (1ULL << 0x30);
+	ignorable |= (1ULL << 0x31);
+
+	/* Checksum. */
+	ignorable |= (1ULL << 0x32);
+	ignorable |= (1ULL << 0x33);
+
+	for (i = 0; i < len; i++, ignorable >>= 1) {
+
+		if ((ignorable & 1) || (s1[i] == s2[i]))
+			continue;
+
+#ifdef TILE_NET_DEBUG
+		/* HACK: Mention non-timestamp diffs. */
+		if (i < 0x38 && i != 0x2f &&
+		    net_ratelimit())
+			pr_info("Diff at 0x%x\n", i);
+#endif
+
+		return false;
+	}
+
+#ifdef TILE_NET_NO_SUPPRESS_DUP_ACKS
+	/* HACK: Do not suppress truly duplicate ACKs. */
+	/* ISSUE: Is this actually necessary or helpful? */
+	if (s1[0x2a] == s2[0x2a] &&
+	    s1[0x2b] == s2[0x2b] &&
+	    s1[0x2c] == s2[0x2c] &&
+	    s1[0x2d] == s2[0x2d]) {
+		return false;
+	}
+#endif
+
+	return true;
+}
+
+#endif
+
+
+
+/*
+ * Like "tile_net_handle_packets()", but just discard packets.
+ */
+static void tile_net_discard_packets(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+	struct tile_netio_queue *queue = &info->queue;
+	netio_queue_impl_t *qsp = queue->__system_part;
+	netio_queue_user_impl_t *qup = &queue->__user_part;
+
+	while (qup->__packet_receive_read !=
+	       qsp->__packet_receive_queue.__packet_write) {
+
+		int index = qup->__packet_receive_read;
+
+		int index2_aux = index + sizeof(netio_pkt_t);
+		int index2 =
+			((index2_aux ==
+			  qsp->__packet_receive_queue.__last_packet_plus_one) ?
+			 0 : index2_aux);
+
+		netio_pkt_t *pkt = (netio_pkt_t *)
+			((unsigned long) &qsp[1] + index);
+
+		/* Extract the "linux_buffer_t". */
+		unsigned int buffer = pkt->__packet.word;
+
+		/* Convert "linux_buffer_t" to "va". */
+		void *va = __va((phys_addr_t)(buffer >> 1) << 7);
+
+		/* Acquire the associated "skb". */
+		struct sk_buff **skb_ptr = va - sizeof(*skb_ptr);
+		struct sk_buff *skb = *skb_ptr;
+
+		kfree_skb(skb);
+
+		/* Consume this packet. */
+		qup->__packet_receive_read = index2;
+	}
+}
+
+
+/*
+ * Handle the next packet.  Return true if "processed", false if "filtered".
+ */
+static bool tile_net_poll_aux(struct tile_net_cpu *info, int index)
+{
+	struct net_device *dev = info->napi.dev;
+
+	struct tile_netio_queue *queue = &info->queue;
+	netio_queue_impl_t *qsp = queue->__system_part;
+	netio_queue_user_impl_t *qup = &queue->__user_part;
+	struct tile_net_stats_t *stats = &info->stats;
+
+	int filter;
+
+	int index2_aux = index + sizeof(netio_pkt_t);
+	int index2 =
+		((index2_aux ==
+		  qsp->__packet_receive_queue.__last_packet_plus_one) ?
+		 0 : index2_aux);
+
+	netio_pkt_t *pkt = (netio_pkt_t *)((unsigned long) &qsp[1] + index);
+
+	netio_pkt_metadata_t *metadata = NETIO_PKT_METADATA(pkt);
+
+	/* Extract the packet size. */
+	unsigned long len =
+		(NETIO_PKT_CUSTOM_LENGTH(pkt) +
+		 NET_IP_ALIGN - NETIO_PACKET_PADDING);
+
+	/* Extract the "linux_buffer_t". */
+	unsigned int buffer = pkt->__packet.word;
+
+	/* Extract "small" (vs "large"). */
+	bool small = ((buffer & 1) != 0);
+
+	/* Convert "linux_buffer_t" to "va". */
+	void *va = __va((phys_addr_t)(buffer >> 1) << 7);
+
+	/* Extract the packet data pointer. */
+	/* Compare to "NETIO_PKT_CUSTOM_DATA(pkt)". */
+	unsigned char *buf = va + NET_IP_ALIGN;
+
+#ifdef IGNORE_DUP_ACKS
+
+	static int other;
+	static int final;
+	static int keep;
+	static int skip;
+
+#endif
+
+	/* Invalidate the packet buffer. */
+	if (!hash_default)
+		__inv_buffer(buf, len);
+
+	/* ISSUE: Is this needed? */
+	dev->last_rx = jiffies;
+
+#ifdef TILE_NET_DUMP_PACKETS
+	dump_packet(buf, len, "rx");
+#endif /* TILE_NET_DUMP_PACKETS */
+
+#ifdef TILE_NET_VERIFY_INGRESS
+	if (!NETIO_PKT_L4_CSUM_CORRECT_M(metadata, pkt) &&
+	    NETIO_PKT_L4_CSUM_CALCULATED_M(metadata, pkt)) {
+		/*
+		 * FIXME: This complains about UDP packets
+		 * with a "zero" checksum (bug 6624).
+		 */
+#ifdef TILE_NET_PANIC_ON_BAD
+		dump_packet(buf, len, "rx");
+		panic("Bad L4 checksum.");
+#else
+		pr_warning("Bad L4 checksum on %d byte packet.\n", len);
+#endif
+	}
+	if (!NETIO_PKT_L3_CSUM_CORRECT_M(metadata, pkt) &&
+	    NETIO_PKT_L3_CSUM_CALCULATED_M(metadata, pkt)) {
+		dump_packet(buf, len, "rx");
+		panic("Bad L3 checksum.");
+	}
+	switch (NETIO_PKT_STATUS_M(metadata, pkt)) {
+	case NETIO_PKT_STATUS_OVERSIZE:
+		if (len >= 64) {
+			dump_packet(buf, len, "rx");
+			panic("Unexpected OVERSIZE.");
+		}
+		break;
+	case NETIO_PKT_STATUS_BAD:
+#ifdef TILE_NET_PANIC_ON_BAD
+		dump_packet(buf, len, "rx");
+		panic("Unexpected BAD packet.");
+#else
+		pr_warning("Unexpected BAD %d byte packet.\n", len);
+#endif
+	}
+#endif
+
+	filter = 0;
+
+	if (!(dev->flags & IFF_UP)) {
+		/* Filter packets received before we're up. */
+		filter = 1;
+	} else if (!(dev->flags & IFF_PROMISC)) {
+		/*
+		 * FIXME: Implement HW multicast filter.
+		 */
+		if (!IS_MULTICAST(buf) && !IS_BROADCAST(buf)) {
+			/* Filter packets not for our address. */
+			const u8 *mine = dev->dev_addr;
+			filter = compare_ether_addr(mine, buf);
+		}
+	}
+
+#ifdef IGNORE_DUP_ACKS
+
+	if (len != 66) {
+		/* FIXME: Must check "is_tcp_ack(buf, len)" somehow. */
+
+		other++;
+
+	} else if (index2 ==
+		   qsp->__packet_receive_queue.__packet_write) {
+
+		final++;
+
+	} else {
+
+		netio_pkt_t *pkt2 = (netio_pkt_t *)
+			((unsigned long) &qsp[1] + index2);
+
+		netio_pkt_metadata_t *metadata2 =
+			NETIO_PKT_METADATA(pkt2);
+
+		/* Extract the packet size. */
+		unsigned long len2 =
+			(NETIO_PKT_CUSTOM_LENGTH(pkt2) +
+			 NET_IP_ALIGN - NETIO_PACKET_PADDING);
+
+		if (len2 == 66 &&
+		    NETIO_PKT_FLOW_HASH_M(metadata, pkt) ==
+		    NETIO_PKT_FLOW_HASH_M(metadata2, pkt2)) {
+
+			/* Extract the "linux_buffer_t". */
+			unsigned int buffer2 = pkt2->__packet.word;
+
+			/* Convert "linux_buffer_t" to "va". */
+			void *va2 =
+				__va((phys_addr_t)(buffer2 >> 1) << 7);
+
+			/* Extract the packet data pointer. */
+			/* Compare to "NETIO_PKT_CUSTOM_DATA(pkt)". */
+			unsigned char *buf2 = va2 + NET_IP_ALIGN;
+
+			/* Invalidate the packet buffer. */
+			if (!hash_default)
+				__inv_buffer(buf2, len2);
+
+			if (is_dup_ack(buf, buf2, len)) {
+				skip++;
+				filter = 1;
+			} else {
+				keep++;
+			}
+		}
+	}
+
+	if (net_ratelimit())
+		pr_info("Other %d Final %d Keep %d Skip %d.\n",
+			other, final, keep, skip);
+
+#endif
+
+	if (filter) {
+
+		/* ISSUE: Update "drop" statistics? */
+
+		tile_net_provide_linux_buffer(info, va, small);
+
+	} else {
+
+		/* Acquire the associated "skb". */
+		struct sk_buff **skb_ptr = va - sizeof(*skb_ptr);
+		struct sk_buff *skb = *skb_ptr;
+
+		/* Paranoia. */
+		if (skb->data != buf)
+			panic("Corrupt linux buffer from LIPP! "
+			      "VA=%p, skb=%p, skb->data=%p\n",
+			      va, skb, skb->data);
+
+		/* Encode the actual packet length. */
+		skb_put(skb, len);
+
+		/* NOTE: This call also sets "skb->dev = dev". */
+		skb->protocol = eth_type_trans(skb, dev);
+
+		/* ISSUE: Discard corrupt packets? */
+		/* ISSUE: Discard packets with bad checksums? */
+
+		/* Avoid recomputing TCP/UDP checksums. */
+		if (NETIO_PKT_L4_CSUM_CORRECT_M(metadata, pkt))
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+		netif_receive_skb(skb);
+
+		stats->rx_packets++;
+		stats->rx_bytes += len;
+
+		if (small)
+			info->num_needed_small_buffers++;
+		else
+			info->num_needed_large_buffers++;
+	}
+
+	/* Return four credits after every fourth packet. */
+	if (--qup->__receive_credit_remaining == 0) {
+		u32 interval = qup->__receive_credit_interval;
+		qup->__receive_credit_remaining = interval;
+		__netio_fastio_return_credits(qup->__fastio_index, interval);
+	}
+
+	/* Consume this packet. */
+	qup->__packet_receive_read = index2;
+
+	return !filter;
+}
+
+
+/*
+ * Handle some packets for the given device on the current CPU.
+ *
+ * ISSUE: The "rotting packet" race condition occurs if a packet
+ * arrives after the queue appears to be empty, and before the
+ * hypervisor interrupt is re-enabled.
+ */
+static int tile_net_poll(struct napi_struct *napi, int budget)
+{
+	struct net_device *dev = napi->dev;
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+	struct tile_netio_queue *queue = &info->queue;
+	netio_queue_impl_t *qsp = queue->__system_part;
+	netio_queue_user_impl_t *qup = &queue->__user_part;
+
+	unsigned int work = 0;
+
+	while (1) {
+		int index = qup->__packet_receive_read;
+		if (index == qsp->__packet_receive_queue.__packet_write)
+			break;
+
+		if (tile_net_poll_aux(info, index)) {
+			if (++work >= budget)
+				goto done;
+		}
+	}
+
+	napi_complete(&info->napi);
+
+	/* Re-enable hypervisor interrupts. */
+	enable_percpu_irq(priv->intr_id);
+
+	/* HACK: Avoid the "rotting packet" problem. */
+	if (qup->__packet_receive_read !=
+	    qsp->__packet_receive_queue.__packet_write)
+		napi_schedule(&info->napi);
+
+	/* ISSUE: Handle completions? */
+
+done:
+
+	tile_net_provide_needed_buffers(info);
+
+	return work;
+}
+
+
+/*
+ * Handle an ingress interrupt for the given device on the current cpu.
+ */
+static irqreturn_t tile_net_handle_ingress_interrupt(int irq, void *dev_ptr)
+{
+	struct net_device *dev = (struct net_device *)dev_ptr;
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+
+	/* Disable hypervisor interrupt. */
+	disable_percpu_irq(priv->intr_id);
+
+	napi_schedule(&info->napi);
+
+	return IRQ_HANDLED;
+}
+
+
+/*
+ * One time initialization per interface.
+ */
+static int tile_net_open_aux(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+
+	int ret;
+	int dummy;
+	unsigned int epp_lotar;
+
+	/*
+	 * Find out where EPP memory should be homed.
+	 */
+	ret = hv_dev_pread(priv->hv_devhdl, 0,
+			   (HV_VirtAddr)&epp_lotar, sizeof(epp_lotar),
+			   NETIO_EPP_SHM_OFF);
+	if (ret < 0) {
+		pr_err("could not read epp_shm_queue lotar.\n");
+		return -EIO;
+	}
+
+	/*
+	 * Home the page on the EPP.
+	 */
+	{
+		int epp_home = hv_lotar_to_cpu(epp_lotar);
+		struct page *page = virt_to_page(priv->epp_queue);
+		homecache_change_page_home(page, 0, epp_home);
+	}
+
+	/*
+	 * Register the EPP shared memory queue.
+	 */
+	{
+		netio_ipp_address_t ea = {
+			.va = 0,
+			.pa = __pa(priv->epp_queue),
+			.pte = hv_pte(0),
+			.size = PAGE_SIZE,
+		};
+		ea.pte = hv_pte_set_lotar(ea.pte, epp_lotar);
+		ea.pte = hv_pte_set_mode(ea.pte, HV_PTE_MODE_CACHE_TILE_L3);
+		ret = hv_dev_pwrite(priv->hv_devhdl, 0,
+				    (HV_VirtAddr)&ea,
+				    sizeof(ea),
+				    NETIO_EPP_SHM_OFF);
+		if (ret < 0)
+			return -EIO;
+	}
+
+	/*
+	 * Start LIPP/LEPP.
+	 */
+	if (hv_dev_pwrite(priv->hv_devhdl, 0, (HV_VirtAddr)&dummy,
+			  sizeof(dummy), NETIO_IPP_START_SHIM_OFF) < 0) {
+		pr_warning("Failed to start LIPP/LEPP.\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+
+/*
+ * Register with hypervisor on each CPU.
+ *
+ * Strangely, this function does important things even if it "fails",
+ * which is especially common if the link is not up yet.  Hopefully
+ * these things are all "harmless" if done twice!
+ */
+static void tile_net_register(void *dev_ptr)
+{
+	struct net_device *dev = (struct net_device *)dev_ptr;
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info;
+
+	struct tile_netio_queue *queue;
+
+	/* Only network cpus can receive packets. */
+	int queue_id =
+		cpumask_test_cpu(my_cpu, &priv->network_cpus_map) ? 0 : 255;
+
+	netio_input_config_t config = {
+		.flags = 0,
+		.num_receive_packets = priv->network_cpus_credits,
+		.queue_id = queue_id
+	};
+
+	int ret = 0;
+	netio_queue_impl_t *queuep;
+
+	PDEBUG("tile_net_register(queue_id %d)\n", queue_id);
+
+	if (!strcmp(dev->name, "xgbe0"))
+		info = &__get_cpu_var(hv_xgbe0);
+	else if (!strcmp(dev->name, "xgbe1"))
+		info = &__get_cpu_var(hv_xgbe1);
+	else if (!strcmp(dev->name, "gbe0"))
+		info = &__get_cpu_var(hv_gbe0);
+	else if (!strcmp(dev->name, "gbe1"))
+		info = &__get_cpu_var(hv_gbe1);
+	else
+		BUG();
+
+	/* Initialize the egress timer. */
+	init_timer(&info->egress_timer);
+	info->egress_timer.data = (long)info;
+	info->egress_timer.function = tile_net_handle_egress_timer;
+
+	priv->cpu[my_cpu] = info;
+
+	/*
+	 * Register ourselves with the IPP.
+	 */
+	ret = hv_dev_pwrite(priv->hv_devhdl, 0,
+			    (HV_VirtAddr)&config,
+			    sizeof(netio_input_config_t),
+			    NETIO_IPP_INPUT_REGISTER_OFF);
+	PDEBUG("hv_dev_pwrite(NETIO_IPP_INPUT_REGISTER_OFF) returned %d\n",
+	       ret);
+	if (ret < 0) {
+		printk(KERN_DEBUG "hv_dev_pwrite NETIO_IPP_INPUT_REGISTER_OFF"
+		       " failure %d\n", ret);
+		info->link_down = (ret == NETIO_LINK_DOWN);
+		return;
+	}
+
+	/*
+	 * Get the pointer to our queue's system part.
+	 */
+
+	ret = hv_dev_pread(priv->hv_devhdl, 0,
+			   (HV_VirtAddr)&queuep,
+			   sizeof(netio_queue_impl_t *),
+			   NETIO_IPP_INPUT_REGISTER_OFF);
+	PDEBUG("hv_dev_pread(NETIO_IPP_INPUT_REGISTER_OFF) returned %d\n",
+	       ret);
+	PDEBUG("queuep %p\n", queuep);
+	if (ret <= 0) {
+		/* ISSUE: Shouldn't this be a fatal error? */
+		pr_err("hv_dev_pread NETIO_IPP_INPUT_REGISTER_OFF failure\n");
+		return;
+	}
+
+	queue = &info->queue;
+
+	queue->__system_part = queuep;
+
+	memset(&queue->__user_part, 0, sizeof(netio_queue_user_impl_t));
+
+	/* This is traditionally "config.num_receive_packets / 2". */
+	queue->__user_part.__receive_credit_interval = 4;
+	queue->__user_part.__receive_credit_remaining =
+		queue->__user_part.__receive_credit_interval;
+
+	/*
+	 * Get a fastio index from the hypervisor.
+	 * ISSUE: Shouldn't this check the result?
+	 */
+	ret = hv_dev_pread(priv->hv_devhdl, 0,
+			   (HV_VirtAddr)&queue->__user_part.__fastio_index,
+			   sizeof(queue->__user_part.__fastio_index),
+			   NETIO_IPP_GET_FASTIO_OFF);
+	PDEBUG("hv_dev_pread(NETIO_IPP_GET_FASTIO_OFF) returned %d\n", ret);
+
+	netif_napi_add(dev, &info->napi, tile_net_poll, 64);
+
+	/* Now we are registered. */
+	info->registered = true;
+}
+
+
+/*
+ * Unregister with hypervisor on each CPU.
+ */
+static void tile_net_unregister(void *dev_ptr)
+{
+	struct net_device *dev = (struct net_device *)dev_ptr;
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+
+	int ret = 0;
+	int dummy = 0;
+
+	/* Do nothing if never registered. */
+	if (info == NULL)
+		return;
+
+	/* Do nothing if already unregistered. */
+	if (!info->registered)
+		return;
+
+	/*
+	 * Unregister ourselves with LIPP.
+	 */
+	ret = hv_dev_pwrite(priv->hv_devhdl, 0, (HV_VirtAddr)&dummy,
+			    sizeof(dummy), NETIO_IPP_INPUT_UNREGISTER_OFF);
+	PDEBUG("hv_dev_pwrite(NETIO_IPP_INPUT_UNREGISTER_OFF) returned %d\n",
+	       ret);
+	if (ret < 0) {
+		/* FIXME: Just panic? */
+		pr_err("hv_dev_pwrite NETIO_IPP_INPUT_UNREGISTER_OFF"
+		       " failure %d\n", ret);
+	}
+
+	/*
+	 * Discard all packets still in our NetIO queue.  Hopefully,
+	 * once the unregister call is complete, there will be no
+	 * packets still in flight on the IDN.
+	 */
+	tile_net_discard_packets(dev);
+
+	/* Reset state. */
+	info->num_needed_small_buffers = 0;
+	info->num_needed_large_buffers = 0;
+
+	/* Cancel egress timer. */
+	del_timer(&info->egress_timer);
+	info->egress_timer_scheduled = false;
+
+	netif_napi_del(&info->napi);
+
+	/* Now we are unregistered. */
+	info->registered = false;
+}
+
+
+/*
+ * Helper function for "tile_net_stop()".
+ *
+ * Also used to handle registration failure in "tile_net_open_inner()",
+ * when "fully_opened" is known to be false, and the various extra
+ * steps in "tile_net_stop()" are not necessary.  ISSUE: It might be
+ * simpler if we could just call "tile_net_stop()" anyway.
+ */
+static void tile_net_stop_aux(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+
+	int dummy = 0;
+
+	/* Unregister all tiles, so LIPP will stop delivering packets. */
+	on_each_cpu(tile_net_unregister, (void *)dev, 1);
+
+	/* Stop LIPP/LEPP. */
+	if (hv_dev_pwrite(priv->hv_devhdl, 0, (HV_VirtAddr)&dummy,
+			  sizeof(dummy), NETIO_IPP_STOP_SHIM_OFF) < 0)
+		panic("Failed to stop LIPP/LEPP!\n");
+
+	priv->partly_opened = 0;
+}
+
+
+/*
+ * Disable ingress interrupts for the given device on the current cpu.
+ */
+static void tile_net_disable_intr(void *dev_ptr)
+{
+	struct net_device *dev = (struct net_device *)dev_ptr;
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+
+	/* Disable hypervisor interrupt. */
+	disable_percpu_irq(priv->intr_id);
+
+	/* Disable NAPI if needed. */
+	if (info != NULL && info->napi_enabled) {
+		napi_disable(&info->napi);
+		info->napi_enabled = false;
+	}
+}
+
+
+/*
+ * Enable ingress interrupts for the given device on the current cpu.
+ */
+static void tile_net_enable_intr(void *dev_ptr)
+{
+	struct net_device *dev = (struct net_device *)dev_ptr;
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+
+	/* Enable hypervisor interrupt. */
+	enable_percpu_irq(priv->intr_id);
+
+	/* Enable NAPI. */
+	napi_enable(&info->napi);
+	info->napi_enabled = true;
+}
+
+
+/*
+ * tile_net_open_inner does most of the work of bringing up the interface.
+ * It's called from tile_net_open(), and also from tile_net_retry_open().
+ * The return value is 0 if the interface was brought up, < 0 if
+ * tile_net_open() should return the return value as an error, and > 0 if
+ * tile_net_open() should return success and schedule a work item to
+ * periodically retry the bringup.
+ */
+static int tile_net_open_inner(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info;
+	struct tile_netio_queue *queue;
+	unsigned int irq;
+	int i;
+
+	/*
+	 * First try to register just on the local CPU, and handle any
+	 * semi-expected "link down" failure specially.  Note that we
+	 * do NOT call "tile_net_stop_aux()", unlike below.
+	 */
+	tile_net_register(dev);
+	info = priv->cpu[my_cpu];
+	if (!info->registered) {
+		if (info->link_down)
+			return 1;
+		return -EAGAIN;
+	}
+
+	/*
+	 * Now register everywhere else.  If any registration fails,
+	 * even for "link down" (which might not be possible), we
+	 * clean up using "tile_net_stop_aux()".
+	 */
+	smp_call_function(tile_net_register, (void *)dev, 1);
+	for_each_online_cpu(i) {
+		if (!priv->cpu[i]->registered) {
+			tile_net_stop_aux(dev);
+			return -EAGAIN;
+		}
+	}
+
+	queue = &info->queue;
+
+	/*
+	 * Set the device intr bit mask.
+	 * The tile_net_register above sets per tile __intr_id.
+	 */
+	priv->intr_id = queue->__system_part->__intr_id;
+	BUG_ON(!priv->intr_id);
+
+	/*
+	 * Register the device interrupt handler.
+	 * The __ffs() function returns the index into the interrupt handler
+	 * table from the interrupt bit mask which should have one bit
+	 * and one bit only set.
+	 */
+	irq = __ffs(priv->intr_id);
+	tile_irq_activate(irq, TILE_IRQ_PERCPU);
+	BUG_ON(request_irq(irq, tile_net_handle_ingress_interrupt,
+			   0, dev->name, (void *)dev) != 0);
+
+	/* ISSUE: How could "priv->fully_opened" ever be "true" here? */
+
+	if (!priv->fully_opened) {
+
+		int dummy = 0;
+
+		/* Allocate initial buffers. */
+
+		int max_buffers =
+			priv->network_cpus_count * priv->network_cpus_credits;
+
+		info->num_needed_small_buffers =
+			min(LIPP_SMALL_BUFFERS, max_buffers);
+
+		info->num_needed_large_buffers =
+			min(LIPP_LARGE_BUFFERS, max_buffers);
+
+		tile_net_provide_needed_buffers(info);
+
+		if (info->num_needed_small_buffers != 0 ||
+		    info->num_needed_large_buffers != 0)
+			panic("Insufficient memory for buffer stack!");
+
+		/* Start LIPP/LEPP and activate "ingress" at the shim. */
+		if (hv_dev_pwrite(priv->hv_devhdl, 0, (HV_VirtAddr)&dummy,
+				  sizeof(dummy), NETIO_IPP_INPUT_INIT_OFF) < 0)
+			panic("Failed to activate the LIPP Shim!\n");
+
+		priv->fully_opened = 1;
+	}
+
+	/* On each tile, enable the hypervisor to trigger interrupts. */
+	/* ISSUE: Do this before starting LIPP/LEPP? */
+	on_each_cpu(tile_net_enable_intr, (void *)dev, 1);
+
+	/* Start our transmit queue. */
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+
+/*
+ * Called periodically to retry bringing up the NetIO interface,
+ * if it doesn't come up cleanly during tile_net_open().
+ */
+static void tile_net_open_retry(struct work_struct *w)
+{
+	struct delayed_work *dw =
+		container_of(w, struct delayed_work, work);
+
+	struct tile_net_priv *priv =
+		container_of(dw, struct tile_net_priv, retry_work);
+
+	/*
+	 * Try to bring the NetIO interface up.  If it fails, reschedule
+	 * ourselves to try again later; otherwise, tell Linux we now have
+	 * a working link.  ISSUE: What if the return value is negative?
+	 */
+	if (tile_net_open_inner(priv->dev))
+		schedule_delayed_work_on(singlethread_cpu, &priv->retry_work,
+					 TILE_NET_RETRY_INTERVAL);
+	else
+		netif_carrier_on(priv->dev);
+}
+
+
+/*
+ * Called when a network interface is made active.
+ *
+ * Returns 0 on success, negative value on failure.
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP).  At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ *
+ * If the actual link is not available yet, then we tell Linux that
+ * we have no carrier, and we keep checking until the link comes up.
+ */
+static int tile_net_open(struct net_device *dev)
+{
+	int ret = 0;
+	struct tile_net_priv *priv = netdev_priv(dev);
+
+	/*
+	 * We rely on priv->partly_opened to tell us if this is the
+	 * first time this interface is being brought up. If it is
+	 * set, the IPP was already initialized and should not be
+	 * initialized again.
+	 */
+	if (!priv->partly_opened) {
+
+		int count;
+		int credits;
+
+		/* Initialize LIPP/LEPP, and start the Shim. */
+		ret = tile_net_open_aux(dev);
+		if (ret < 0) {
+			pr_err("tile_net_open_aux failed: %d\n", ret);
+			return ret;
+		}
+
+		/* Analyze the network cpus. */
+
+		if (network_cpus_used)
+			cpumask_copy(&priv->network_cpus_map,
+				     &network_cpus_map);
+		else
+			cpumask_copy(&priv->network_cpus_map, cpu_online_mask);
+
+
+		count = cpumask_weight(&priv->network_cpus_map);
+
+		/* Limit credits to available buffers, and apply min. */
+		credits = max(16, (LIPP_LARGE_BUFFERS / count) & ~1);
+
+		/* Apply "GBE" max limit. */
+		/* ISSUE: Use higher limit for XGBE? */
+		credits = min(NETIO_MAX_RECEIVE_PKTS, credits);
+
+		priv->network_cpus_count = count;
+		priv->network_cpus_credits = credits;
+
+#ifdef TILE_NET_DEBUG
+		pr_info("Using %d network cpus, with %d credits each\n",
+		       priv->network_cpus_count, priv->network_cpus_credits);
+#endif
+
+		priv->partly_opened = 1;
+	}
+
+	/*
+	 * Attempt to bring up the link.
+	 */
+	ret = tile_net_open_inner(dev);
+	if (ret <= 0) {
+		if (ret == 0)
+			netif_carrier_on(dev);
+		return ret;
+	}
+
+	/*
+	 * We were unable to bring up the NetIO interface, but we want to
+	 * try again in a little bit.  Tell Linux that we have no carrier
+	 * so it doesn't try to use the interface before the link comes up
+	 * and then remember to try again later.
+	 */
+	netif_carrier_off(dev);
+	schedule_delayed_work_on(singlethread_cpu, &priv->retry_work,
+				 TILE_NET_RETRY_INTERVAL);
+
+	return 0;
+}
+
+
+/*
+ * Disables a network interface.
+ *
+ * Returns 0, this is not allowed to fail.
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS.  The hardware is still under the drivers control, but
+ * needs to be disabled.  A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ *
+ * ISSUE: Can this can be called while "tile_net_poll()" is running?
+ */
+static int tile_net_stop(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+
+	bool pending = true;
+
+	PDEBUG("tile_net_stop()\n");
+
+	/* ISSUE: Only needed if not yet fully open. */
+	cancel_delayed_work_sync(&priv->retry_work);
+
+	/* Can't transmit any more. */
+	netif_stop_queue(dev);
+
+	/*
+	 * Disable hypervisor interrupts on each tile.
+	 */
+	on_each_cpu(tile_net_disable_intr, (void *)dev, 1);
+
+	/*
+	 * Unregister the interrupt handler.
+	 * The __ffs() function returns the index into the interrupt handler
+	 * table from the interrupt bit mask which should have one bit
+	 * and one bit only set.
+	 */
+	if (priv->intr_id)
+		free_irq(__ffs(priv->intr_id), dev);
+
+	/*
+	 * Drain all the LIPP buffers.
+	 */
+
+	while (true) {
+		int buffer;
+
+		/* NOTE: This should never fail. */
+		if (hv_dev_pread(priv->hv_devhdl, 0, (HV_VirtAddr)&buffer,
+				 sizeof(buffer), NETIO_IPP_DRAIN_OFF) < 0)
+			break;
+
+		/* Stop when done. */
+		if (buffer == 0)
+			break;
+
+		{
+			/* Convert "linux_buffer_t" to "va". */
+			void *va = __va((phys_addr_t)(buffer >> 1) << 7);
+
+			/* Acquire the associated "skb". */
+			struct sk_buff **skb_ptr = va - sizeof(*skb_ptr);
+			struct sk_buff *skb = *skb_ptr;
+
+			kfree_skb(skb);
+		}
+	}
+
+	/* Stop LIPP/LEPP. */
+	tile_net_stop_aux(dev);
+
+
+	priv->fully_opened = 0;
+
+
+	/*
+	 * XXX: ISSUE: It appears that, in practice anyway, by the
+	 * time we get here, there are no pending completions.
+	 */
+	while (pending) {
+
+		struct sk_buff *olds[32];
+		unsigned int wanted = 32;
+		unsigned int i, nolds = 0;
+
+		nolds = tile_net_lepp_grab_comps(dev, olds,
+						 wanted, &pending);
+
+		/* ISSUE: We have never actually seen this debug spew. */
+		if (nolds != 0)
+			pr_info("During tile_net_stop(), grabbed %d comps.\n",
+			       nolds);
+
+		for (i = 0; i < nolds; i++)
+			kfree_skb(olds[i]);
+	}
+
+
+	/* Wipe the EPP queue. */
+	memset(priv->epp_queue, 0, sizeof(lepp_queue_t));
+
+	/* Evict the EPP queue. */
+	finv_buffer(priv->epp_queue, PAGE_SIZE);
+
+	return 0;
+}
+
+
+/*
+ * Prepare the "frags" info for the resulting LEPP command.
+ *
+ * If needed, flush the memory used by the frags.
+ */
+static unsigned int tile_net_tx_frags(lepp_frag_t *frags,
+				      struct sk_buff *skb,
+				      void *b_data, unsigned int b_len)
+{
+	unsigned int i, n = 0;
+
+	struct skb_shared_info *sh = skb_shinfo(skb);
+
+	phys_addr_t cpa;
+
+	if (b_len != 0) {
+
+		if (!hash_default)
+			finv_buffer_remote(b_data, b_len);
+
+		cpa = __pa(b_data);
+		frags[n].cpa_lo = cpa;
+		frags[n].cpa_hi = cpa >> 32;
+		frags[n].length = b_len;
+		frags[n].hash_for_home = hash_default;
+		n++;
+	}
+
+	for (i = 0; i < sh->nr_frags; i++) {
+
+		skb_frag_t *f = &sh->frags[i];
+		unsigned long pfn = page_to_pfn(f->page);
+
+		/* FIXME: Compute "hash_for_home" properly. */
+		/* ISSUE: The hypervisor checks CHIP_HAS_REV1_DMA_PACKETS(). */
+		int hash_for_home = hash_default;
+
+		/* FIXME: Hmmm. */
+		if (!hash_default) {
+			void *va = pfn_to_kaddr(pfn) + f->page_offset;
+			BUG_ON(PageHighMem(f->page));
+			finv_buffer_remote(va, f->size);
+		}
+
+		cpa = ((phys_addr_t)pfn << PAGE_SHIFT) + f->page_offset;
+		frags[n].cpa_lo = cpa;
+		frags[n].cpa_hi = cpa >> 32;
+		frags[n].length = f->size;
+		frags[n].hash_for_home = hash_for_home;
+		n++;
+	}
+
+	return n;
+}
+
+
+/*
+ * This function takes "skb", consisting of a header template and a
+ * payload, and hands it to LEPP, to emit as one or more segments,
+ * each consisting of a possibly modified header, plus a piece of the
+ * payload, via a process known as "tcp segmentation offload".
+ *
+ * Usually, "data" will contain the header template, of size "sh_len",
+ * and "sh->frags" will contain "skb->data_len" bytes of payload, and
+ * there will be "sh->gso_segs" segments.
+ *
+ * Sometimes, if "sendfile()" requires copying, we will be called with
+ * "data" containing the header and payload, with "frags" being empty.
+ *
+ * In theory, "sh->nr_frags" could be 3, but in practice, it seems
+ * that this will never actually happen.
+ *
+ * See "emulate_large_send_offload()" for some reference code, which
+ * does not handle checksumming.
+ *
+ * ISSUE: How do we make sure that high memory DMA does not migrate?
+ */
+static int tile_net_tx_tso(struct sk_buff *skb, struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+	struct tile_net_stats_t *stats = &info->stats;
+
+	struct skb_shared_info *sh = skb_shinfo(skb);
+
+	unsigned char *data = skb->data;
+
+	/* The ip header follows the ethernet header. */
+	struct iphdr *ih = ip_hdr(skb);
+	unsigned int ih_len = ih->ihl * 4;
+
+	/* Note that "nh == ih", by definition. */
+	unsigned char *nh = skb_network_header(skb);
+	unsigned int eh_len = nh - data;
+
+	/* The tcp header follows the ip header. */
+	struct tcphdr *th = (struct tcphdr *)(nh + ih_len);
+	unsigned int th_len = th->doff * 4;
+
+	/* The total number of header bytes. */
+	/* NOTE: This may be less than skb_headlen(skb). */
+	unsigned int sh_len = eh_len + ih_len + th_len;
+
+	/* The number of payload bytes at "skb->data + sh_len". */
+	/* This is non-zero for sendfile() without HIGHDMA. */
+	unsigned int b_len = skb_headlen(skb) - sh_len;
+
+	/* The total number of payload bytes. */
+	unsigned int d_len = b_len + skb->data_len;
+
+	/* The maximum payload size. */
+	unsigned int p_len = sh->gso_size;
+
+	/* The total number of segments. */
+	unsigned int num_segs = sh->gso_segs;
+
+	/* The temporary copy of the command. */
+	u32 cmd_body[(LEPP_MAX_CMD_SIZE + 3) / 4];
+	lepp_tso_cmd_t *cmd = (lepp_tso_cmd_t *)cmd_body;
+
+	/* Analyze the "frags". */
+	unsigned int num_frags =
+		tile_net_tx_frags(cmd->frags, skb, data + sh_len, b_len);
+
+	/* The size of the command, including frags and header. */
+	size_t cmd_size = LEPP_TSO_CMD_SIZE(num_frags, sh_len);
+
+	/* The command header. */
+	lepp_tso_cmd_t cmd_init = {
+		.tso = true,
+		.header_size = sh_len,
+		.ip_offset = eh_len,
+		.tcp_offset = eh_len + ih_len,
+		.payload_size = p_len,
+		.num_frags = num_frags,
+	};
+
+	unsigned long irqflags;
+
+	lepp_queue_t *eq = priv->epp_queue;
+
+	struct sk_buff *olds[4];
+	unsigned int wanted = 4;
+	unsigned int i, nolds = 0;
+
+	unsigned int cmd_head, cmd_tail, cmd_next;
+	unsigned int comp_tail;
+
+	unsigned int free_slots;
+
+
+	/* Paranoia. */
+	BUG_ON(skb->protocol != htons(ETH_P_IP));
+	BUG_ON(ih->protocol != IPPROTO_TCP);
+	BUG_ON(skb->ip_summed != CHECKSUM_PARTIAL);
+	BUG_ON(num_frags > LEPP_MAX_FRAGS);
+	/*--BUG_ON(num_segs != (d_len + (p_len - 1)) / p_len); */
+	BUG_ON(num_segs <= 1);
+
+
+	/* Finish preparing the command. */
+
+	/* Copy the command header. */
+	*cmd = cmd_init;
+
+	/* Copy the "header". */
+	memcpy(&cmd->frags[num_frags], data, sh_len);
+
+
+	/* Prefetch and wait, to minimize time spent holding the spinlock. */
+	prefetch_L1(&eq->comp_tail);
+	prefetch_L1(&eq->cmd_tail);
+	mb();
+
+
+	/* Enqueue the command. */
+
+	spin_lock_irqsave(&priv->cmd_lock, irqflags);
+
+	/*
+	 * Handle completions if needed to make room.
+	 * HACK: Spin until there is sufficient room.
+	 */
+	free_slots = lepp_num_free_comp_slots(eq);
+	if (free_slots < 1) {
+spin:
+		nolds += tile_net_lepp_grab_comps(dev, olds + nolds,
+						  wanted - nolds, NULL);
+		if (lepp_num_free_comp_slots(eq) < 1)
+			goto spin;
+	}
+
+	cmd_head = eq->cmd_head;
+	cmd_tail = eq->cmd_tail;
+
+	/* NOTE: The "gotos" below are untested. */
+
+	/* Prepare to advance, detecting full queue. */
+	cmd_next = cmd_tail + cmd_size;
+	if (cmd_tail < cmd_head && cmd_next >= cmd_head)
+		goto spin;
+	if (cmd_next > LEPP_CMD_LIMIT) {
+		cmd_next = 0;
+		if (cmd_next == cmd_head)
+			goto spin;
+	}
+
+	/* Copy the command. */
+	memcpy(&eq->cmds[cmd_tail], cmd, cmd_size);
+
+	/* Advance. */
+	cmd_tail = cmd_next;
+
+	/* Record "skb" for eventual freeing. */
+	comp_tail = eq->comp_tail;
+	eq->comps[comp_tail] = skb;
+	LEPP_QINC(comp_tail);
+	eq->comp_tail = comp_tail;
+
+	/* Flush before allowing LEPP to handle the command. */
+	__insn_mf();
+
+	eq->cmd_tail = cmd_tail;
+
+	spin_unlock_irqrestore(&priv->cmd_lock, irqflags);
+
+	if (nolds == 0)
+		nolds = tile_net_lepp_grab_comps(dev, olds, wanted, NULL);
+
+	/* Handle completions. */
+	for (i = 0; i < nolds; i++)
+		kfree_skb(olds[i]);
+
+	/* Update stats. */
+	stats->tx_packets += num_segs;
+	stats->tx_bytes += (num_segs * sh_len) + d_len;
+
+	/* Make sure the egress timer is scheduled. */
+	tile_net_schedule_egress_timer(info);
+
+	return NETDEV_TX_OK;
+}
+
+
+/*
+ * Transmit a packet (called by the kernel via "hard_start_xmit" hook).
+ */
+static int tile_net_tx(struct sk_buff *skb, struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+	int my_cpu = smp_processor_id();
+	struct tile_net_cpu *info = priv->cpu[my_cpu];
+	struct tile_net_stats_t *stats = &info->stats;
+
+	unsigned long irqflags;
+
+	struct skb_shared_info *sh = skb_shinfo(skb);
+
+	unsigned int len = skb->len;
+	unsigned char *data = skb->data;
+
+	unsigned int csum_start = skb->csum_start - skb_headroom(skb);
+
+	lepp_frag_t frags[LEPP_MAX_FRAGS];
+
+	unsigned int num_frags;
+
+	lepp_queue_t *eq = priv->epp_queue;
+
+	struct sk_buff *olds[4];
+	unsigned int wanted = 4;
+	unsigned int i, nolds = 0;
+
+	unsigned int cmd_size = sizeof(lepp_cmd_t);
+
+	unsigned int cmd_head, cmd_tail, cmd_next;
+	unsigned int comp_tail;
+
+	lepp_cmd_t cmds[LEPP_MAX_FRAGS];
+
+	unsigned int free_slots;
+
+
+	/*
+	 * This is paranoia, since we think that if the link doesn't come
+	 * up, telling Linux we have no carrier will keep it from trying
+	 * to transmit.  If it does, though, we can't execute this routine,
+	 * since data structures we depend on aren't set up yet.
+	 */
+	if (!info->registered)
+		return NETDEV_TX_BUSY;
+
+
+	/* Save the timestamp. */
+	dev->trans_start = jiffies;
+
+
+#ifdef TILE_NET_PARANOIA
+#if CHIP_HAS_CBOX_HOME_MAP()
+	if (hash_default) {
+		HV_PTE pte = *virt_to_pte(current->mm, (unsigned long)data);
+		if (hv_pte_get_mode(pte) != HV_PTE_MODE_CACHE_HASH_L3)
+			panic("Non-coherent egress buffer!");
+	}
+#endif
+#endif
+
+
+#ifdef TILE_NET_DUMP_PACKETS
+	/* ISSUE: Does not dump the "frags". */
+	dump_packet(data, skb_headlen(skb), "tx");
+#endif /* TILE_NET_DUMP_PACKETS */
+
+
+	if (sh->gso_size != 0)
+		return tile_net_tx_tso(skb, dev);
+
+
+	/* Prepare the commands. */
+
+	num_frags = tile_net_tx_frags(frags, skb, data, skb_headlen(skb));
+
+	for (i = 0; i < num_frags; i++) {
+
+		bool final = (i == num_frags - 1);
+
+		lepp_cmd_t cmd = {
+			.cpa_lo = frags[i].cpa_lo,
+			.cpa_hi = frags[i].cpa_hi,
+			.length = frags[i].length,
+			.hash_for_home = frags[i].hash_for_home,
+			.send_completion = final,
+			.end_of_packet = final
+		};
+
+		if (i == 0 && skb->ip_summed == CHECKSUM_PARTIAL) {
+			cmd.compute_checksum = 1;
+			cmd.checksum_data.bits.start_byte = csum_start;
+			cmd.checksum_data.bits.count = len - csum_start;
+			cmd.checksum_data.bits.destination_byte =
+				csum_start + skb->csum_offset;
+		}
+
+		cmds[i] = cmd;
+	}
+
+
+	/* Prefetch and wait, to minimize time spent holding the spinlock. */
+	prefetch_L1(&eq->comp_tail);
+	prefetch_L1(&eq->cmd_tail);
+	mb();
+
+
+	/* Enqueue the commands. */
+
+	spin_lock_irqsave(&priv->cmd_lock, irqflags);
+
+	/*
+	 * Handle completions if needed to make room.
+	 * HACK: Spin until there is sufficient room.
+	 */
+	free_slots = lepp_num_free_comp_slots(eq);
+	if (free_slots < 1) {
+spin:
+		nolds += tile_net_lepp_grab_comps(dev, olds + nolds,
+						  wanted - nolds, NULL);
+		if (lepp_num_free_comp_slots(eq) < 1)
+			goto spin;
+	}
+
+	cmd_head = eq->cmd_head;
+	cmd_tail = eq->cmd_tail;
+
+	/* NOTE: The "gotos" below are untested. */
+
+	/* Copy the commands, or fail. */
+	for (i = 0; i < num_frags; i++) {
+
+		/* Prepare to advance, detecting full queue. */
+		cmd_next = cmd_tail + cmd_size;
+		if (cmd_tail < cmd_head && cmd_next >= cmd_head)
+			goto spin;
+		if (cmd_next > LEPP_CMD_LIMIT) {
+			cmd_next = 0;
+			if (cmd_next == cmd_head)
+				goto spin;
+		}
+
+		/* Copy the command. */
+		*(lepp_cmd_t *)&eq->cmds[cmd_tail] = cmds[i];
+
+		/* Advance. */
+		cmd_tail = cmd_next;
+	}
+
+	/* Record "skb" for eventual freeing. */
+	comp_tail = eq->comp_tail;
+	eq->comps[comp_tail] = skb;
+	LEPP_QINC(comp_tail);
+	eq->comp_tail = comp_tail;
+
+	/* Flush before allowing LEPP to handle the command. */
+	__insn_mf();
+
+	eq->cmd_tail = cmd_tail;
+
+	spin_unlock_irqrestore(&priv->cmd_lock, irqflags);
+
+	if (nolds == 0)
+		nolds = tile_net_lepp_grab_comps(dev, olds, wanted, NULL);
+
+	/* Handle completions. */
+	for (i = 0; i < nolds; i++)
+		kfree_skb(olds[i]);
+
+	/* HACK: Track "expanded" size for short packets (e.g. 42 < 60). */
+	stats->tx_packets++;
+	stats->tx_bytes += ((len >= ETH_ZLEN) ? len : ETH_ZLEN);
+
+	/* Make sure the egress timer is scheduled. */
+	tile_net_schedule_egress_timer(info);
+
+	return NETDEV_TX_OK;
+}
+
+
+/*
+ * Deal with a transmit timeout.
+ */
+static void tile_net_tx_timeout(struct net_device *dev)
+{
+	PDEBUG("tile_net_tx_timeout()\n");
+	PDEBUG("Transmit timeout at %ld, latency %ld\n", jiffies,
+	       jiffies - dev->trans_start);
+
+	/* XXX: ISSUE: This doesn't seem useful for us. */
+	netif_wake_queue(dev);
+}
+
+
+/*
+ * Ioctl commands.
+ */
+static int tile_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	return -EOPNOTSUPP;
+}
+
+
+/*
+ * Get System Network Statistics.
+ *
+ * Returns the address of the device statistics structure.
+ */
+static struct net_device_stats *tile_net_get_stats(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+	u32 rx_packets = 0;
+	u32 tx_packets = 0;
+	u32 rx_bytes = 0;
+	u32 tx_bytes = 0;
+	int i;
+
+	for_each_online_cpu(i) {
+		if (priv->cpu[i]) {
+			rx_packets += priv->cpu[i]->stats.rx_packets;
+			rx_bytes += priv->cpu[i]->stats.rx_bytes;
+			tx_packets += priv->cpu[i]->stats.tx_packets;
+			tx_bytes += priv->cpu[i]->stats.tx_bytes;
+		}
+	}
+
+	priv->stats.rx_packets = rx_packets;
+	priv->stats.rx_bytes = rx_bytes;
+	priv->stats.tx_packets = tx_packets;
+	priv->stats.tx_bytes = tx_bytes;
+
+	return &priv->stats;
+}
+
+
+/*
+ * Change the "mtu".
+ *
+ * The "change_mtu" method is usually not needed.
+ * If you need it, it must be like this.
+ */
+static int tile_net_change_mtu(struct net_device *dev, int new_mtu)
+{
+	PDEBUG("tile_net_change_mtu()\n");
+
+	/* Check ranges. */
+	if ((new_mtu < 68) || (new_mtu > 1500))
+		return -EINVAL;
+
+	/* Accept the value. */
+	dev->mtu = new_mtu;
+
+	return 0;
+}
+
+
+/*
+ * Change the Ethernet Address of the NIC.
+ *
+ * The hypervisor driver does not support changing MAC address.  However,
+ * the IPP does not do anything with the MAC address, so the address which
+ * gets used on outgoing packets, and which is accepted on incoming packets,
+ * is completely up to the NetIO program or kernel driver which is actually
+ * handling them.
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int tile_net_set_mac_address(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EINVAL;
+
+	/* ISSUE: Note that "dev_addr" is now a pointer. */
+	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+	return 0;
+}
+
+
+/*
+ * Obtain the MAC address from the hypervisor.
+ * This must be done before opening the device.
+ */
+static int tile_net_get_mac(struct net_device *dev)
+{
+	struct tile_net_priv *priv = netdev_priv(dev);
+
+	char hv_dev_name[32];
+	int len;
+
+	__netio_getset_offset_t offset = { .word = NETIO_IPP_PARAM_OFF };
+
+	int ret;
+
+	/* For example, "xgbe0". */
+	strcpy(hv_dev_name, dev->name);
+	len = strlen(hv_dev_name);
+
+	/* For example, "xgbe/0". */
+	hv_dev_name[len] = hv_dev_name[len - 1];
+	hv_dev_name[len - 1] = '/';
+	len++;
+
+	/* For example, "xgbe/0/native_hash". */
+	strcpy(hv_dev_name + len, hash_default ? "/native_hash" : "/native");
+
+	/* Get the hypervisor handle for this device. */
+	priv->hv_devhdl = hv_dev_open((HV_VirtAddr)hv_dev_name, 0);
+	PDEBUG("hv_dev_open(%s) returned %d %p\n",
+	       hv_dev_name, priv->hv_devhdl, &priv->hv_devhdl);
+	if (priv->hv_devhdl < 0) {
+		if (priv->hv_devhdl == HV_ENODEV)
+			printk(KERN_DEBUG "Ignoring unconfigured device %s\n",
+				 hv_dev_name);
+		else
+			printk(KERN_DEBUG "hv_dev_open(%s) returned %d\n",
+				 hv_dev_name, priv->hv_devhdl);
+		return -1;
+	}
+
+	/*
+	 * Read the hardware address from the hypervisor.
+	 * ISSUE: Note that "dev_addr" is now a pointer.
+	 */
+	offset.bits.class = NETIO_PARAM;
+	offset.bits.addr = NETIO_PARAM_MAC;
+	ret = hv_dev_pread(priv->hv_devhdl, 0,
+			   (HV_VirtAddr)dev->dev_addr, dev->addr_len,
+			   offset.word);
+	PDEBUG("hv_dev_pread(NETIO_PARAM_MAC) returned %d\n", ret);
+	if (ret <= 0) {
+		printk(KERN_DEBUG "hv_dev_pread(NETIO_PARAM_MAC) %s failed\n",
+		       dev->name);
+		/*
+		 * Since the device is configured by the hypervisor but we
+		 * can't get its MAC address, we are most likely running
+		 * the simulator, so let's generate a random MAC address.
+		 */
+		random_ether_addr(dev->dev_addr);
+	}
+
+	return 0;
+}
+
+
+static struct net_device_ops tile_net_ops = {
+	.ndo_open = tile_net_open,
+	.ndo_stop = tile_net_stop,
+	.ndo_start_xmit = tile_net_tx,
+	.ndo_do_ioctl = tile_net_ioctl,
+	.ndo_get_stats = tile_net_get_stats,
+	.ndo_change_mtu = tile_net_change_mtu,
+	.ndo_tx_timeout = tile_net_tx_timeout,
+	.ndo_set_mac_address = tile_net_set_mac_address
+};
+
+
+/*
+ * The setup function.
+ *
+ * This uses ether_setup() to assign various fields in dev, including
+ * setting IFF_BROADCAST and IFF_MULTICAST, then sets some extra fields.
+ */
+static void tile_net_setup(struct net_device *dev)
+{
+	PDEBUG("tile_net_setup()\n");
+
+	ether_setup(dev);
+
+	dev->netdev_ops = &tile_net_ops;
+
+	dev->watchdog_timeo = TILE_NET_TIMEOUT;
+
+	/* We want lockless xmit. */
+	dev->features |= NETIF_F_LLTX;
+
+	/* We support hardware tx checksums. */
+	dev->features |= NETIF_F_HW_CSUM;
+
+	/* We support scatter/gather. */
+	dev->features |= NETIF_F_SG;
+
+	/* We support TSO. */
+	dev->features |= NETIF_F_TSO;
+
+#ifdef TILE_NET_GSO
+	/* We support GSO. */
+	dev->features |= NETIF_F_GSO;
+#endif
+
+	if (hash_default)
+		dev->features |= NETIF_F_HIGHDMA;
+
+	/* ISSUE: We should support NETIF_F_UFO. */
+
+	dev->tx_queue_len = TILE_NET_TX_QUEUE_LEN;
+
+	dev->mtu = TILE_NET_MTU;
+}
+
+
+/*
+ * Allocate the device structure, register the device, and obtain the
+ * MAC address from the hypervisor.
+ */
+static struct net_device *tile_net_dev_init(const char *name)
+{
+	int ret;
+	struct net_device *dev;
+	struct tile_net_priv *priv;
+	struct page *page;
+
+	/*
+	 * Allocate the device structure.  This allocates "priv", calls
+	 * tile_net_setup(), and saves "name".  Normally, "name" is a
+	 * template, instantiated by register_netdev(), but not for us.
+	 */
+	dev = alloc_netdev(sizeof(*priv), name, tile_net_setup);
+	if (!dev) {
+		pr_err("alloc_netdev(%s) failed\n", name);
+		return NULL;
+	}
+
+	priv = netdev_priv(dev);
+
+	/* Initialize "priv". */
+
+	memset(priv, 0, sizeof(*priv));
+
+	/* Save "dev" for "tile_net_open_retry()". */
+	priv->dev = dev;
+
+	INIT_DELAYED_WORK(&priv->retry_work, tile_net_open_retry);
+
+	spin_lock_init(&priv->cmd_lock);
+	spin_lock_init(&priv->comp_lock);
+
+	/* Allocate "epp_queue". */
+	BUG_ON(get_order(sizeof(lepp_queue_t)) != 0);
+	page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
+	if (!page) {
+		free_netdev(dev);
+		return NULL;
+	}
+	priv->epp_queue = page_address(page);
+
+	/* Register the network device. */
+	ret = register_netdev(dev);
+	if (ret) {
+		pr_err("register_netdev %s failed %d\n", dev->name, ret);
+		free_page((unsigned long)priv->epp_queue);
+		free_netdev(dev);
+		return NULL;
+	}
+
+	/* Get the MAC address. */
+	ret = tile_net_get_mac(dev);
+	if (ret < 0) {
+		unregister_netdev(dev);
+		free_page((unsigned long)priv->epp_queue);
+		free_netdev(dev);
+		return NULL;
+	}
+
+	return dev;
+}
+
+
+/*
+ * Module cleanup.
+ */
+static void tile_net_cleanup(void)
+{
+	int i;
+
+	for (i = 0; i < TILE_NET_DEVS; i++) {
+		if (tile_net_devs[i]) {
+			struct net_device *dev = tile_net_devs[i];
+			struct tile_net_priv *priv = netdev_priv(dev);
+			unregister_netdev(dev);
+			finv_buffer(priv->epp_queue, PAGE_SIZE);
+			free_page((unsigned long)priv->epp_queue);
+			free_netdev(dev);
+		}
+	}
+}
+
+
+/*
+ * Module initialization.
+ */
+static int tile_net_init_module(void)
+{
+	pr_info("Tilera IPP Net Driver\n");
+
+	tile_net_devs[0] = tile_net_dev_init("xgbe0");
+	tile_net_devs[1] = tile_net_dev_init("xgbe1");
+	tile_net_devs[2] = tile_net_dev_init("gbe0");
+	tile_net_devs[3] = tile_net_dev_init("gbe1");
+
+	return 0;
+}
+
+
+#ifndef MODULE
+/*
+ * The "network_cpus" boot argument specifies the cpus that are dedicated
+ * to handle ingress packets.
+ *
+ * The parameter should be in the form "network_cpus=m-n[,x-y]", where
+ * m, n, x, y are integer numbers that represent the cpus that can be
+ * neither a dedicated cpu nor a dataplane cpu.
+ */
+static int __init network_cpus_setup(char *str)
+{
+	int rc = cpulist_parse_crop(str, &network_cpus_map);
+	if (rc != 0) {
+		pr_warning("network_cpus=%s: malformed cpu list\n",
+		       str);
+	} else {
+
+		/* Remove dedicated cpus. */
+		cpumask_and(&network_cpus_map, &network_cpus_map,
+			    cpu_possible_mask);
+
+
+		if (cpumask_empty(&network_cpus_map)) {
+			pr_warning("Ignoring network_cpus='%s'.\n",
+			       str);
+		} else {
+			char buf[1024];
+			cpulist_scnprintf(buf, sizeof(buf), &network_cpus_map);
+			pr_info("Linux network CPUs: %s\n", buf);
+			network_cpus_used = true;
+		}
+	}
+
+	return 0;
+}
+__setup("network_cpus=", network_cpus_setup);
+#endif
+
+
+module_init(tile_net_init_module);
+module_exit(tile_net_cleanup);
diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h
index 05a95586f3c5..055b87ab4f07 100644
--- a/drivers/net/ucc_geth.h
+++ b/drivers/net/ucc_geth.h
@@ -899,7 +899,8 @@ struct ucc_geth_hardware_statistics {
 #define UCC_GETH_UTFS_INIT                      512	/* Tx virtual FIFO size
 							 */
 #define UCC_GETH_UTFET_INIT                     256	/* 1/2 utfs */
-#define UCC_GETH_UTFTT_INIT                     512
+#define UCC_GETH_UTFTT_INIT                     256	/* 1/2 utfs
+							   due to errata */
 /* Gigabit Ethernet (1000 Mbps) */
 #define UCC_GETH_URFS_GIGA_INIT                 4096/*2048*/	/* Rx virtual
 								   FIFO size */
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index b154a94de03e..62e9e8dc8190 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2994,12 +2994,14 @@ static int hso_probe(struct usb_interface *interface,
 
 	case HSO_INTF_BULK:
 		/* It's a regular bulk interface */
-		if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
-		    !disable_net)
-			hso_dev = hso_create_net_device(interface, port_spec);
-		else
+		if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
+			if (!disable_net)
+				hso_dev =
+				    hso_create_net_device(interface, port_spec);
+		} else {
 			hso_dev =
 			    hso_create_bulk_serial_device(interface, port_spec);
+		}
 		if (!hso_dev)
 			goto exit;
 		break;
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index d81ad8397885..cf05504d9511 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -498,7 +498,6 @@ norbuff:
 static int x25_asy_close(struct net_device *dev)
 {
 	struct x25_asy *sl = netdev_priv(dev);
-	int err;
 
 	spin_lock(&sl->lock);
 	if (sl->tty)
@@ -507,10 +506,6 @@ static int x25_asy_close(struct net_device *dev)
 	netif_stop_queue(dev);
 	sl->rcount = 0;
 	sl->xleft  = 0;
-	err = lapb_unregister(dev);
-	if (err != LAPB_OK)
-		printk(KERN_ERR "x25_asy_close: lapb_unregister error -%d\n",
-			err);
 	spin_unlock(&sl->lock);
 	return 0;
 }
@@ -595,6 +590,7 @@ static int x25_asy_open_tty(struct tty_struct *tty)
 static void x25_asy_close_tty(struct tty_struct *tty)
 {
 	struct x25_asy *sl = tty->disc_data;
+	int err;
 
 	/* First make sure we're connected. */
 	if (!sl || sl->magic != X25_ASY_MAGIC)
@@ -605,6 +601,11 @@ static void x25_asy_close_tty(struct tty_struct *tty)
 		dev_close(sl->dev);
 	rtnl_unlock();
 
+	err = lapb_unregister(sl->dev);
+	if (err != LAPB_OK)
+		printk(KERN_ERR "x25_asy_close: lapb_unregister error -%d\n",
+			err);
+
 	tty->disc_data = NULL;
 	sl->tty = NULL;
 	x25_asy_free(sl);
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index c76ea53c20ce..1a62e351ec77 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -518,7 +518,7 @@ bool ath_stoprecv(struct ath_softc *sc)
 	bool stopped;
 
 	spin_lock_bh(&sc->rx.rxbuflock);
-	ath9k_hw_stoppcurecv(ah);
+	ath9k_hw_abortpcurecv(ah);
 	ath9k_hw_setrxfilter(ah, 0);
 	stopped = ath9k_hw_stopdmarecv(ah);
 
diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index 980ae70ea424..a314c2c2bfbe 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -647,7 +647,7 @@ init:
 	}
 
 unlock:
-	if (err && (vif_id != -1)) {
+	if (err && (vif_id >= 0)) {
 		vif_priv->active = false;
 		bitmap_release_region(&ar->vif_bitmap, vif_id, 0);
 		ar->vifs--;
diff --git a/drivers/net/wireless/b43/sdio.c b/drivers/net/wireless/b43/sdio.c
index 9a55338d957f..09e2dfd7b175 100644
--- a/drivers/net/wireless/b43/sdio.c
+++ b/drivers/net/wireless/b43/sdio.c
@@ -163,6 +163,7 @@ static int b43_sdio_probe(struct sdio_func *func,
 err_free_ssb:
 	kfree(sdio);
 err_disable_func:
+	sdio_claim_host(func);
 	sdio_disable_func(func);
 err_release_host:
 	sdio_release_host(func);
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index f01e344cf4bd..98e6fdf34d30 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -49,6 +49,7 @@ obj-$(CONFIG_MIPS) += setup-bus.o setup-irq.o
 obj-$(CONFIG_X86_VISWS) += setup-irq.o
 obj-$(CONFIG_MN10300) += setup-bus.o
 obj-$(CONFIG_MICROBLAZE) += setup-bus.o
+obj-$(CONFIG_TILE) += setup-bus.o setup-irq.o
 
 #
 # ACPI Related PCI FW Functions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index f5c63fe9db5c..6f9350cabbd5 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2136,6 +2136,24 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
 			quirk_unhide_mch_dev6);
 
+#ifdef CONFIG_TILE
+/*
+ * The Tilera TILEmpower platform needs to set the link speed
+ * to 2.5GT(Giga-Transfers)/s (Gen 1). The default link speed
+ * setting is 5GT/s (Gen 2). 0x98 is the Link Control2 PCIe
+ * capability register of the PEX8624 PCIe switch. The switch
+ * supports link speed auto negotiation, but falsely sets
+ * the link speed to 5GT/s.
+ */
+static void __devinit quirk_tile_plx_gen1(struct pci_dev *dev)
+{
+	if (tile_plx_gen1) {
+		pci_write_config_dword(dev, 0x98, 0x1);
+		mdelay(50);
+	}
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1);
+#endif /* CONFIG_TILE */
 
 #ifdef CONFIG_PCI_MSI
 /* Some chipsets do not support MSI. We cannot easily rely on setting
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 752dbee06af5..5d9c66627b6e 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -292,8 +292,8 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
 		return;
 
 	/* reset adapter interrupt indicators */
-	put_indicator(irq_ptr->dsci);
 	set_subchannel_ind(irq_ptr, 1);
+	put_indicator(irq_ptr->dsci);
 }
 
 void __exit tiqdio_unregister_thinints(void)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 4d8e14b7aa93..aaf9907e6014 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -653,13 +653,13 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
 {
 	if (p->capabilities & UART_CAP_SLEEP) {
 		if (p->capabilities & UART_CAP_EFR) {
-			serial_outp(p, UART_LCR, 0xBF);
+			serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_B);
 			serial_outp(p, UART_EFR, UART_EFR_ECB);
 			serial_outp(p, UART_LCR, 0);
 		}
 		serial_outp(p, UART_IER, sleep ? UART_IERX_SLEEP : 0);
 		if (p->capabilities & UART_CAP_EFR) {
-			serial_outp(p, UART_LCR, 0xBF);
+			serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_B);
 			serial_outp(p, UART_EFR, 0);
 			serial_outp(p, UART_LCR, 0);
 		}
@@ -752,7 +752,7 @@ static int size_fifo(struct uart_8250_port *up)
 	serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
 		    UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
 	serial_outp(up, UART_MCR, UART_MCR_LOOP);
-	serial_outp(up, UART_LCR, UART_LCR_DLAB);
+	serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	old_dl = serial_dl_read(up);
 	serial_dl_write(up, 0x0001);
 	serial_outp(up, UART_LCR, 0x03);
@@ -764,7 +764,7 @@ static int size_fifo(struct uart_8250_port *up)
 		serial_inp(up, UART_RX);
 	serial_outp(up, UART_FCR, old_fcr);
 	serial_outp(up, UART_MCR, old_mcr);
-	serial_outp(up, UART_LCR, UART_LCR_DLAB);
+	serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_dl_write(up, old_dl);
 	serial_outp(up, UART_LCR, old_lcr);
 
@@ -782,7 +782,7 @@ static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p)
 	unsigned int id;
 
 	old_lcr = serial_inp(p, UART_LCR);
-	serial_outp(p, UART_LCR, UART_LCR_DLAB);
+	serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_A);
 
 	old_dll = serial_inp(p, UART_DLL);
 	old_dlm = serial_inp(p, UART_DLM);
@@ -836,7 +836,7 @@ static void autoconfig_has_efr(struct uart_8250_port *up)
 	 * recommended for new designs).
 	 */
 	up->acr = 0;
-	serial_out(up, UART_LCR, 0xBF);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_out(up, UART_EFR, UART_EFR_ECB);
 	serial_out(up, UART_LCR, 0x00);
 	id1 = serial_icr_read(up, UART_ID1);
@@ -945,7 +945,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 * Check for presence of the EFR when DLAB is set.
 	 * Only ST16C650V1 UARTs pass this test.
 	 */
-	serial_outp(up, UART_LCR, UART_LCR_DLAB);
+	serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	if (serial_in(up, UART_EFR) == 0) {
 		serial_outp(up, UART_EFR, 0xA8);
 		if (serial_in(up, UART_EFR) != 0) {
@@ -963,7 +963,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 * Maybe it requires 0xbf to be written to the LCR.
 	 * (other ST16C650V2 UARTs, TI16C752A, etc)
 	 */
-	serial_outp(up, UART_LCR, 0xBF);
+	serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) {
 		DEBUG_AUTOCONF("EFRv2 ");
 		autoconfig_has_efr(up);
@@ -1024,7 +1024,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
 	status1 = serial_in(up, UART_IIR) >> 5;
 	serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
-	serial_outp(up, UART_LCR, UART_LCR_DLAB);
+	serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
 	status2 = serial_in(up, UART_IIR) >> 5;
 	serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
@@ -1183,7 +1183,7 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 	 * We also initialise the EFR (if any) to zero for later.  The
 	 * EFR occupies the same register location as the FCR and IIR.
 	 */
-	serial_outp(up, UART_LCR, 0xBF);
+	serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_outp(up, UART_EFR, 0);
 	serial_outp(up, UART_LCR, 0);
 
@@ -1952,7 +1952,7 @@ static int serial8250_startup(struct uart_port *port)
 	if (up->port.type == PORT_16C950) {
 		/* Wake up and initialize UART */
 		up->acr = 0;
-		serial_outp(up, UART_LCR, 0xBF);
+		serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_outp(up, UART_EFR, UART_EFR_ECB);
 		serial_outp(up, UART_IER, 0);
 		serial_outp(up, UART_LCR, 0);
@@ -2002,7 +2002,7 @@ static int serial8250_startup(struct uart_port *port)
 	if (up->port.type == PORT_16850) {
 		unsigned char fctr;
 
-		serial_outp(up, UART_LCR, 0xbf);
+		serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 		fctr = serial_inp(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX);
 		serial_outp(up, UART_FCTR, fctr | UART_FCTR_TRGD | UART_FCTR_RX);
@@ -2363,7 +2363,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
 		if (termios->c_cflag & CRTSCTS)
 			efr |= UART_EFR_CTS;
 
-		serial_outp(up, UART_LCR, 0xBF);
+		serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_outp(up, UART_EFR, efr);
 	}
 
diff --git a/drivers/serial/omap-serial.c b/drivers/serial/omap-serial.c
index 14365f72b664..1201eff1831e 100644
--- a/drivers/serial/omap-serial.c
+++ b/drivers/serial/omap-serial.c
@@ -570,7 +570,7 @@ serial_omap_configure_xonxoff
 	unsigned char efr = 0;
 
 	up->lcr = serial_in(up, UART_LCR);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	up->efr = serial_in(up, UART_EFR);
 	serial_out(up, UART_EFR, up->efr & ~UART_EFR_ECB);
 
@@ -598,7 +598,7 @@ serial_omap_configure_xonxoff
 		efr |= OMAP_UART_SW_RX;
 
 	serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
-	serial_out(up, UART_LCR, UART_LCR_DLAB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 
 	up->mcr = serial_in(up, UART_MCR);
 
@@ -612,14 +612,14 @@ serial_omap_configure_xonxoff
 		up->mcr |= UART_MCR_XONANY;
 
 	serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG);
 	/* Enable special char function UARTi.EFR_REG[5] and
 	 * load the new software flow control mode IXON or IXOFF
 	 * and restore the UARTi.EFR_REG[4] ENHANCED_EN value.
 	 */
 	serial_out(up, UART_EFR, efr | UART_EFR_SCD);
-	serial_out(up, UART_LCR, UART_LCR_DLAB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 
 	serial_out(up, UART_MCR, up->mcr & ~UART_MCR_TCRTLR);
 	serial_out(up, UART_LCR, up->lcr);
@@ -724,22 +724,22 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * baud clock is not running
 	 * DLL_REG and DLH_REG set to 0.
 	 */
-	serial_out(up, UART_LCR, UART_LCR_DLAB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_out(up, UART_DLL, 0);
 	serial_out(up, UART_DLM, 0);
 	serial_out(up, UART_LCR, 0);
 
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 	up->efr = serial_in(up, UART_EFR);
 	serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
 
-	serial_out(up, UART_LCR, UART_LCR_DLAB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	up->mcr = serial_in(up, UART_MCR);
 	serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR);
 	/* FIFO ENABLE, DMA MODE */
 	serial_out(up, UART_FCR, up->fcr);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 	if (up->use_dma) {
 		serial_out(up, UART_TI752_TLR, 0);
@@ -748,52 +748,52 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
 	}
 
 	serial_out(up, UART_EFR, up->efr);
-	serial_out(up, UART_LCR, UART_LCR_DLAB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_out(up, UART_MCR, up->mcr);
 
 	/* Protocol, Baud Rate, and Interrupt Settings */
 
-	serial_out(up, UART_OMAP_MDR1, OMAP_MDR1_DISABLE);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 	up->efr = serial_in(up, UART_EFR);
 	serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
 
 	serial_out(up, UART_LCR, 0);
 	serial_out(up, UART_IER, 0);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 	serial_out(up, UART_DLL, quot & 0xff);          /* LS of divisor */
 	serial_out(up, UART_DLM, quot >> 8);            /* MS of divisor */
 
 	serial_out(up, UART_LCR, 0);
 	serial_out(up, UART_IER, up->ier);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 
 	serial_out(up, UART_EFR, up->efr);
 	serial_out(up, UART_LCR, cval);
 
 	if (baud > 230400 && baud != 3000000)
-		serial_out(up, UART_OMAP_MDR1, OMAP_MDR1_MODE13X);
+		serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_13X_MODE);
 	else
-		serial_out(up, UART_OMAP_MDR1, OMAP_MDR1_MODE16X);
+		serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE);
 
 	/* Hardware Flow Control Configuration */
 
 	if (termios->c_cflag & CRTSCTS) {
 		efr |= (UART_EFR_CTS | UART_EFR_RTS);
-		serial_out(up, UART_LCR, UART_LCR_DLAB);
+		serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 
 		up->mcr = serial_in(up, UART_MCR);
 		serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR);
 
-		serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+		serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 		up->efr = serial_in(up, UART_EFR);
 		serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
 
 		serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG);
 		serial_out(up, UART_EFR, efr); /* Enable AUTORTS and AUTOCTS */
-		serial_out(up, UART_LCR, UART_LCR_DLAB);
+		serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 		serial_out(up, UART_MCR, up->mcr | UART_MCR_RTS);
 		serial_out(up, UART_LCR, cval);
 	}
@@ -815,13 +815,13 @@ serial_omap_pm(struct uart_port *port, unsigned int state,
 	unsigned char efr;
 
 	dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->pdev->id);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	efr = serial_in(up, UART_EFR);
 	serial_out(up, UART_EFR, efr | UART_EFR_ECB);
 	serial_out(up, UART_LCR, 0);
 
 	serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0);
-	serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
+	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	serial_out(up, UART_EFR, efr);
 	serial_out(up, UART_LCR, 0);
 	/* Enable module level wake up */
diff --git a/drivers/ssb/b43_pci_bridge.c b/drivers/ssb/b43_pci_bridge.c
index ef9c6a04ad8f..744d3f6e4709 100644
--- a/drivers/ssb/b43_pci_bridge.c
+++ b/drivers/ssb/b43_pci_bridge.c
@@ -24,6 +24,7 @@ static const struct pci_device_id b43_pci_bridge_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4312) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4315) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4318) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BCM_GVC,  0x4318) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4319) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4320) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4321) },
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 4b4da5b86ff9..f442668a1e52 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -129,8 +129,9 @@ static void handle_tx(struct vhost_net *net)
 	size_t hdr_size;
 	struct socket *sock;
 
-	sock = rcu_dereference_check(vq->private_data,
-				     lockdep_is_held(&vq->mutex));
+	/* TODO: check that we are running from vhost_worker?
+	 * Not sure it's worth it, it's straight-forward enough. */
+	sock = rcu_dereference_check(vq->private_data, 1);
 	if (!sock)
 		return;
 
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 7845d1f7d1d9..b50bc4bd5c56 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -91,23 +91,10 @@ static inline int compressed_bio_size(struct btrfs_root *root,
 static struct bio *compressed_bio_alloc(struct block_device *bdev,
 					u64 first_byte, gfp_t gfp_flags)
 {
-	struct bio *bio;
 	int nr_vecs;
 
 	nr_vecs = bio_get_nr_vecs(bdev);
-	bio = bio_alloc(gfp_flags, nr_vecs);
-
-	if (bio == NULL && (current->flags & PF_MEMALLOC)) {
-		while (!bio && (nr_vecs /= 2))
-			bio = bio_alloc(gfp_flags, nr_vecs);
-	}
-
-	if (bio) {
-		bio->bi_size = 0;
-		bio->bi_bdev = bdev;
-		bio->bi_sector = first_byte >> 9;
-	}
-	return bio;
+	return btrfs_bio_alloc(bdev, first_byte >> 9, nr_vecs, gfp_flags);
 }
 
 static int check_compressed_csum(struct inode *inode,
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 8db9234f6b41..af52f6d7a4d8 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -808,9 +808,9 @@ struct btrfs_block_group_cache {
 	int extents_thresh;
 	int free_extents;
 	int total_bitmaps;
-	int ro:1;
-	int dirty:1;
-	int iref:1;
+	unsigned int ro:1;
+	unsigned int dirty:1;
+	unsigned int iref:1;
 
 	int disk_cache_state;
 
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index fb827d0d7181..c547cca26a26 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -28,6 +28,7 @@
 #include <linux/freezer.h>
 #include <linux/crc32c.h>
 #include <linux/slab.h>
+#include <linux/migrate.h>
 #include "compat.h"
 #include "ctree.h"
 #include "disk-io.h"
@@ -355,6 +356,8 @@ static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
 	ret = btree_read_extent_buffer_pages(root, eb, start + PAGE_CACHE_SIZE,
 					     btrfs_header_generation(eb));
 	BUG_ON(ret);
+	WARN_ON(!btrfs_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN));
+
 	found_start = btrfs_header_bytenr(eb);
 	if (found_start != start) {
 		WARN_ON(1);
@@ -693,6 +696,29 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
 				   __btree_submit_bio_done);
 }
 
+static int btree_migratepage(struct address_space *mapping,
+			struct page *newpage, struct page *page)
+{
+	/*
+	 * we can't safely write a btree page from here,
+	 * we haven't done the locking hook
+	 */
+	if (PageDirty(page))
+		return -EAGAIN;
+	/*
+	 * Buffers may be managed in a filesystem specific way.
+	 * We must have no buffers or drop them.
+	 */
+	if (page_has_private(page) &&
+	    !try_to_release_page(page, GFP_KERNEL))
+		return -EAGAIN;
+#ifdef CONFIG_MIGRATION
+	return migrate_page(mapping, newpage, page);
+#else
+	return -ENOSYS;
+#endif
+}
+
 static int btree_writepage(struct page *page, struct writeback_control *wbc)
 {
 	struct extent_io_tree *tree;
@@ -707,8 +733,7 @@ static int btree_writepage(struct page *page, struct writeback_control *wbc)
 	}
 
 	redirty_page_for_writepage(wbc, page);
-	eb = btrfs_find_tree_block(root, page_offset(page),
-				      PAGE_CACHE_SIZE);
+	eb = btrfs_find_tree_block(root, page_offset(page), PAGE_CACHE_SIZE);
 	WARN_ON(!eb);
 
 	was_dirty = test_and_set_bit(EXTENT_BUFFER_DIRTY, &eb->bflags);
@@ -799,6 +824,9 @@ static const struct address_space_operations btree_aops = {
 	.releasepage	= btree_releasepage,
 	.invalidatepage = btree_invalidatepage,
 	.sync_page	= block_sync_page,
+#ifdef CONFIG_MIGRATION
+	.migratepage	= btree_migratepage,
+#endif
 };
 
 int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
@@ -1538,10 +1566,8 @@ struct btrfs_root *open_ctree(struct super_block *sb,
 						 GFP_NOFS);
 	struct btrfs_root *csum_root = kzalloc(sizeof(struct btrfs_root),
 						 GFP_NOFS);
-	struct btrfs_root *tree_root = kzalloc(sizeof(struct btrfs_root),
-					       GFP_NOFS);
-	struct btrfs_fs_info *fs_info = kzalloc(sizeof(*fs_info),
-						GFP_NOFS);
+	struct btrfs_root *tree_root = btrfs_sb(sb);
+	struct btrfs_fs_info *fs_info = tree_root->fs_info;
 	struct btrfs_root *chunk_root = kzalloc(sizeof(struct btrfs_root),
 						GFP_NOFS);
 	struct btrfs_root *dev_root = kzalloc(sizeof(struct btrfs_root),
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 951ef09b82f4..6f0444473594 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -232,9 +232,85 @@ fail:
 	return ERR_PTR(ret);
 }
 
+static int btrfs_get_name(struct dentry *parent, char *name,
+			  struct dentry *child)
+{
+	struct inode *inode = child->d_inode;
+	struct inode *dir = parent->d_inode;
+	struct btrfs_path *path;
+	struct btrfs_root *root = BTRFS_I(dir)->root;
+	struct btrfs_inode_ref *iref;
+	struct btrfs_root_ref *rref;
+	struct extent_buffer *leaf;
+	unsigned long name_ptr;
+	struct btrfs_key key;
+	int name_len;
+	int ret;
+
+	if (!dir || !inode)
+		return -EINVAL;
+
+	if (!S_ISDIR(dir->i_mode))
+		return -EINVAL;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+	path->leave_spinning = 1;
+
+	if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
+		key.objectid = BTRFS_I(inode)->root->root_key.objectid;
+		key.type = BTRFS_ROOT_BACKREF_KEY;
+		key.offset = (u64)-1;
+		root = root->fs_info->tree_root;
+	} else {
+		key.objectid = inode->i_ino;
+		key.offset = dir->i_ino;
+		key.type = BTRFS_INODE_REF_KEY;
+	}
+
+	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
+	if (ret < 0) {
+		btrfs_free_path(path);
+		return ret;
+	} else if (ret > 0) {
+		if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
+			path->slots[0]--;
+		} else {
+			btrfs_free_path(path);
+			return -ENOENT;
+		}
+	}
+	leaf = path->nodes[0];
+
+	if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
+	       rref = btrfs_item_ptr(leaf, path->slots[0],
+				     struct btrfs_root_ref);
+	       name_ptr = (unsigned long)(rref + 1);
+	       name_len = btrfs_root_ref_name_len(leaf, rref);
+	} else {
+		iref = btrfs_item_ptr(leaf, path->slots[0],
+				      struct btrfs_inode_ref);
+		name_ptr = (unsigned long)(iref + 1);
+		name_len = btrfs_inode_ref_name_len(leaf, iref);
+	}
+
+	read_extent_buffer(leaf, name, name_ptr, name_len);
+	btrfs_free_path(path);
+
+	/*
+	 * have to add the null termination to make sure that reconnect_path
+	 * gets the right len for strlen
+	 */
+	name[name_len] = '\0';
+
+	return 0;
+}
+
 const struct export_operations btrfs_export_ops = {
 	.encode_fh	= btrfs_encode_fh,
 	.fh_to_dentry	= btrfs_fh_to_dentry,
 	.fh_to_parent	= btrfs_fh_to_parent,
 	.get_parent	= btrfs_get_parent,
+	.get_name	= btrfs_get_name,
 };
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0c097f3aec41..bcd59c7dfb57 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3412,7 +3412,7 @@ again:
 	 * our reservation.
 	 */
 	if (unused <= space_info->total_bytes) {
-		unused -= space_info->total_bytes;
+		unused = space_info->total_bytes - unused;
 		if (unused >= num_bytes) {
 			if (!reserved)
 				space_info->bytes_reserved += orig_bytes;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index eac10e3260a9..3e86b9f36507 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1828,9 +1828,9 @@ static void end_bio_extent_preparewrite(struct bio *bio, int err)
 	bio_put(bio);
 }
 
-static struct bio *
-extent_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
-		 gfp_t gfp_flags)
+struct bio *
+btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
+		gfp_t gfp_flags)
 {
 	struct bio *bio;
 
@@ -1919,7 +1919,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
 	else
 		nr = bio_get_nr_vecs(bdev);
 
-	bio = extent_bio_alloc(bdev, sector, nr, GFP_NOFS | __GFP_HIGH);
+	bio = btrfs_bio_alloc(bdev, sector, nr, GFP_NOFS | __GFP_HIGH);
 
 	bio_add_page(bio, page, page_size, offset);
 	bio->bi_end_io = end_io_func;
@@ -2901,21 +2901,53 @@ out:
 int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		__u64 start, __u64 len, get_extent_t *get_extent)
 {
-	int ret;
+	int ret = 0;
 	u64 off = start;
 	u64 max = start + len;
 	u32 flags = 0;
+	u32 found_type;
+	u64 last;
 	u64 disko = 0;
+	struct btrfs_key found_key;
 	struct extent_map *em = NULL;
 	struct extent_state *cached_state = NULL;
+	struct btrfs_path *path;
+	struct btrfs_file_extent_item *item;
 	int end = 0;
 	u64 em_start = 0, em_len = 0;
 	unsigned long emflags;
-	ret = 0;
+	int hole = 0;
 
 	if (len == 0)
 		return -EINVAL;
 
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+	path->leave_spinning = 1;
+
+	ret = btrfs_lookup_file_extent(NULL, BTRFS_I(inode)->root,
+				       path, inode->i_ino, -1, 0);
+	if (ret < 0) {
+		btrfs_free_path(path);
+		return ret;
+	}
+	WARN_ON(!ret);
+	path->slots[0]--;
+	item = btrfs_item_ptr(path->nodes[0], path->slots[0],
+			      struct btrfs_file_extent_item);
+	btrfs_item_key_to_cpu(path->nodes[0], &found_key, path->slots[0]);
+	found_type = btrfs_key_type(&found_key);
+
+	/* No extents, just return */
+	if (found_key.objectid != inode->i_ino ||
+	    found_type != BTRFS_EXTENT_DATA_KEY) {
+		btrfs_free_path(path);
+		return 0;
+	}
+	last = found_key.offset;
+	btrfs_free_path(path);
+
 	lock_extent_bits(&BTRFS_I(inode)->io_tree, start, start + len, 0,
 			 &cached_state, GFP_NOFS);
 	em = get_extent(inode, NULL, 0, off, max - off, 0);
@@ -2925,11 +2957,18 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		ret = PTR_ERR(em);
 		goto out;
 	}
+
 	while (!end) {
+		hole = 0;
 		off = em->start + em->len;
 		if (off >= max)
 			end = 1;
 
+		if (em->block_start == EXTENT_MAP_HOLE) {
+			hole = 1;
+			goto next;
+		}
+
 		em_start = em->start;
 		em_len = em->len;
 
@@ -2939,8 +2978,6 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		if (em->block_start == EXTENT_MAP_LAST_BYTE) {
 			end = 1;
 			flags |= FIEMAP_EXTENT_LAST;
-		} else if (em->block_start == EXTENT_MAP_HOLE) {
-			flags |= FIEMAP_EXTENT_UNWRITTEN;
 		} else if (em->block_start == EXTENT_MAP_INLINE) {
 			flags |= (FIEMAP_EXTENT_DATA_INLINE |
 				  FIEMAP_EXTENT_NOT_ALIGNED);
@@ -2953,10 +2990,10 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags))
 			flags |= FIEMAP_EXTENT_ENCODED;
 
+next:
 		emflags = em->flags;
 		free_extent_map(em);
 		em = NULL;
-
 		if (!end) {
 			em = get_extent(inode, NULL, 0, off, max - off, 0);
 			if (!em)
@@ -2967,15 +3004,23 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			}
 			emflags = em->flags;
 		}
+
 		if (test_bit(EXTENT_FLAG_VACANCY, &emflags)) {
 			flags |= FIEMAP_EXTENT_LAST;
 			end = 1;
 		}
 
-		ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
-					em_len, flags);
-		if (ret)
-			goto out_free;
+		if (em_start == last) {
+			flags |= FIEMAP_EXTENT_LAST;
+			end = 1;
+		}
+
+		if (!hole) {
+			ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
+						em_len, flags);
+			if (ret)
+				goto out_free;
+		}
 	}
 out_free:
 	free_extent_map(em);
@@ -3836,8 +3881,10 @@ int try_release_extent_buffer(struct extent_io_tree *tree, struct page *page)
 
 	spin_lock(&tree->buffer_lock);
 	eb = radix_tree_lookup(&tree->buffer, start >> PAGE_CACHE_SHIFT);
-	if (!eb)
-		goto out;
+	if (!eb) {
+		spin_unlock(&tree->buffer_lock);
+		return ret;
+	}
 
 	if (test_bit(EXTENT_BUFFER_DIRTY, &eb->bflags)) {
 		ret = 0;
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 1c6d4f342ef7..4183c8178f01 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -310,4 +310,7 @@ int extent_clear_unlock_delalloc(struct inode *inode,
 				struct extent_io_tree *tree,
 				u64 start, u64 end, struct page *locked_page,
 				unsigned long op);
+struct bio *
+btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
+		gfp_t gfp_flags);
 #endif
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index e354c33df082..c1faded5fca0 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1047,8 +1047,14 @@ out:
 
 		if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) {
 			trans = btrfs_start_transaction(root, 0);
+			if (IS_ERR(trans)) {
+				num_written = PTR_ERR(trans);
+				goto done;
+			}
+			mutex_lock(&inode->i_mutex);
 			ret = btrfs_log_dentry_safe(trans, root,
 						    file->f_dentry);
+			mutex_unlock(&inode->i_mutex);
 			if (ret == 0) {
 				ret = btrfs_sync_log(trans, root);
 				if (ret == 0)
@@ -1067,6 +1073,7 @@ out:
 			     (start_pos + num_written - 1) >> PAGE_CACHE_SHIFT);
 		}
 	}
+done:
 	current->backing_dev_info = NULL;
 	return num_written ? num_written : err;
 }
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 558cac2dfa54..8039390bd6a6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4501,6 +4501,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
 	BTRFS_I(inode)->index_cnt = 2;
 	BTRFS_I(inode)->root = root;
 	BTRFS_I(inode)->generation = trans->transid;
+	inode->i_generation = BTRFS_I(inode)->generation;
 	btrfs_set_inode_space_info(root, inode);
 
 	if (mode & S_IFDIR)
@@ -4622,12 +4623,12 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
 }
 
 static int btrfs_add_nondir(struct btrfs_trans_handle *trans,
-			    struct dentry *dentry, struct inode *inode,
-			    int backref, u64 index)
+			    struct inode *dir, struct dentry *dentry,
+			    struct inode *inode, int backref, u64 index)
 {
-	int err = btrfs_add_link(trans, dentry->d_parent->d_inode,
-				 inode, dentry->d_name.name,
-				 dentry->d_name.len, backref, index);
+	int err = btrfs_add_link(trans, dir, inode,
+				 dentry->d_name.name, dentry->d_name.len,
+				 backref, index);
 	if (!err) {
 		d_instantiate(dentry, inode);
 		return 0;
@@ -4668,8 +4669,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
 	btrfs_set_trans_block_group(trans, dir);
 
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-				dentry->d_name.len,
-				dentry->d_parent->d_inode->i_ino, objectid,
+				dentry->d_name.len, dir->i_ino, objectid,
 				BTRFS_I(dir)->block_group, mode, &index);
 	err = PTR_ERR(inode);
 	if (IS_ERR(inode))
@@ -4682,7 +4682,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
 	}
 
 	btrfs_set_trans_block_group(trans, inode);
-	err = btrfs_add_nondir(trans, dentry, inode, 0, index);
+	err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
 	if (err)
 		drop_inode = 1;
 	else {
@@ -4730,10 +4730,8 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
 	btrfs_set_trans_block_group(trans, dir);
 
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-				dentry->d_name.len,
-				dentry->d_parent->d_inode->i_ino,
-				objectid, BTRFS_I(dir)->block_group, mode,
-				&index);
+				dentry->d_name.len, dir->i_ino, objectid,
+				BTRFS_I(dir)->block_group, mode, &index);
 	err = PTR_ERR(inode);
 	if (IS_ERR(inode))
 		goto out_unlock;
@@ -4745,7 +4743,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
 	}
 
 	btrfs_set_trans_block_group(trans, inode);
-	err = btrfs_add_nondir(trans, dentry, inode, 0, index);
+	err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
 	if (err)
 		drop_inode = 1;
 	else {
@@ -4787,6 +4785,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
 		return -EPERM;
 
 	btrfs_inc_nlink(inode);
+	inode->i_ctime = CURRENT_TIME;
 
 	err = btrfs_set_inode_index(dir, &index);
 	if (err)
@@ -4805,15 +4804,17 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
 	btrfs_set_trans_block_group(trans, dir);
 	ihold(inode);
 
-	err = btrfs_add_nondir(trans, dentry, inode, 1, index);
+	err = btrfs_add_nondir(trans, dir, dentry, inode, 1, index);
 
 	if (err) {
 		drop_inode = 1;
 	} else {
+		struct dentry *parent = dget_parent(dentry);
 		btrfs_update_inode_block_group(trans, dir);
 		err = btrfs_update_inode(trans, root, inode);
 		BUG_ON(err);
-		btrfs_log_new_name(trans, inode, NULL, dentry->d_parent);
+		btrfs_log_new_name(trans, inode, NULL, parent);
+		dput(parent);
 	}
 
 	nr = trans->blocks_used;
@@ -4853,8 +4854,7 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 	btrfs_set_trans_block_group(trans, dir);
 
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-				dentry->d_name.len,
-				dentry->d_parent->d_inode->i_ino, objectid,
+				dentry->d_name.len, dir->i_ino, objectid,
 				BTRFS_I(dir)->block_group, S_IFDIR | mode,
 				&index);
 	if (IS_ERR(inode)) {
@@ -4877,9 +4877,8 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 	if (err)
 		goto out_fail;
 
-	err = btrfs_add_link(trans, dentry->d_parent->d_inode,
-				 inode, dentry->d_name.name,
-				 dentry->d_name.len, 0, index);
+	err = btrfs_add_link(trans, dir, inode, dentry->d_name.name,
+			     dentry->d_name.len, 0, index);
 	if (err)
 		goto out_fail;
 
@@ -5535,13 +5534,21 @@ struct btrfs_dio_private {
 	u64 bytes;
 	u32 *csums;
 	void *private;
+
+	/* number of bios pending for this dio */
+	atomic_t pending_bios;
+
+	/* IO errors */
+	int errors;
+
+	struct bio *orig_bio;
 };
 
 static void btrfs_endio_direct_read(struct bio *bio, int err)
 {
+	struct btrfs_dio_private *dip = bio->bi_private;
 	struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1;
 	struct bio_vec *bvec = bio->bi_io_vec;
-	struct btrfs_dio_private *dip = bio->bi_private;
 	struct inode *inode = dip->inode;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	u64 start;
@@ -5595,15 +5602,18 @@ static void btrfs_endio_direct_write(struct bio *bio, int err)
 	struct btrfs_trans_handle *trans;
 	struct btrfs_ordered_extent *ordered = NULL;
 	struct extent_state *cached_state = NULL;
+	u64 ordered_offset = dip->logical_offset;
+	u64 ordered_bytes = dip->bytes;
 	int ret;
 
 	if (err)
 		goto out_done;
-
-	ret = btrfs_dec_test_ordered_pending(inode, &ordered,
-					     dip->logical_offset, dip->bytes);
+again:
+	ret = btrfs_dec_test_first_ordered_pending(inode, &ordered,
+						   &ordered_offset,
+						   ordered_bytes);
 	if (!ret)
-		goto out_done;
+		goto out_test;
 
 	BUG_ON(!ordered);
 
@@ -5663,8 +5673,20 @@ out_unlock:
 out:
 	btrfs_delalloc_release_metadata(inode, ordered->len);
 	btrfs_end_transaction(trans, root);
+	ordered_offset = ordered->file_offset + ordered->len;
 	btrfs_put_ordered_extent(ordered);
 	btrfs_put_ordered_extent(ordered);
+
+out_test:
+	/*
+	 * our bio might span multiple ordered extents.  If we haven't
+	 * completed the accounting for the whole dio, go back and try again
+	 */
+	if (ordered_offset < dip->logical_offset + dip->bytes) {
+		ordered_bytes = dip->logical_offset + dip->bytes -
+			ordered_offset;
+		goto again;
+	}
 out_done:
 	bio->bi_private = dip->private;
 
@@ -5684,6 +5706,176 @@ static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw,
 	return 0;
 }
 
+static void btrfs_end_dio_bio(struct bio *bio, int err)
+{
+	struct btrfs_dio_private *dip = bio->bi_private;
+
+	if (err) {
+		printk(KERN_ERR "btrfs direct IO failed ino %lu rw %lu "
+		      "disk_bytenr %lu len %u err no %d\n",
+		      dip->inode->i_ino, bio->bi_rw, bio->bi_sector,
+		      bio->bi_size, err);
+		dip->errors = 1;
+
+		/*
+		 * before atomic variable goto zero, we must make sure
+		 * dip->errors is perceived to be set.
+		 */
+		smp_mb__before_atomic_dec();
+	}
+
+	/* if there are more bios still pending for this dio, just exit */
+	if (!atomic_dec_and_test(&dip->pending_bios))
+		goto out;
+
+	if (dip->errors)
+		bio_io_error(dip->orig_bio);
+	else {
+		set_bit(BIO_UPTODATE, &dip->orig_bio->bi_flags);
+		bio_endio(dip->orig_bio, 0);
+	}
+out:
+	bio_put(bio);
+}
+
+static struct bio *btrfs_dio_bio_alloc(struct block_device *bdev,
+				       u64 first_sector, gfp_t gfp_flags)
+{
+	int nr_vecs = bio_get_nr_vecs(bdev);
+	return btrfs_bio_alloc(bdev, first_sector, nr_vecs, gfp_flags);
+}
+
+static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
+					 int rw, u64 file_offset, int skip_sum,
+					 u32 *csums)
+{
+	int write = rw & REQ_WRITE;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	int ret;
+
+	bio_get(bio);
+	ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
+	if (ret)
+		goto err;
+
+	if (write && !skip_sum) {
+		ret = btrfs_wq_submit_bio(root->fs_info,
+				   inode, rw, bio, 0, 0,
+				   file_offset,
+				   __btrfs_submit_bio_start_direct_io,
+				   __btrfs_submit_bio_done);
+		goto err;
+	} else if (!skip_sum)
+		btrfs_lookup_bio_sums_dio(root, inode, bio,
+					  file_offset, csums);
+
+	ret = btrfs_map_bio(root, rw, bio, 0, 1);
+err:
+	bio_put(bio);
+	return ret;
+}
+
+static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
+				    int skip_sum)
+{
+	struct inode *inode = dip->inode;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_mapping_tree *map_tree = &root->fs_info->mapping_tree;
+	struct bio *bio;
+	struct bio *orig_bio = dip->orig_bio;
+	struct bio_vec *bvec = orig_bio->bi_io_vec;
+	u64 start_sector = orig_bio->bi_sector;
+	u64 file_offset = dip->logical_offset;
+	u64 submit_len = 0;
+	u64 map_length;
+	int nr_pages = 0;
+	u32 *csums = dip->csums;
+	int ret = 0;
+
+	bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS);
+	if (!bio)
+		return -ENOMEM;
+	bio->bi_private = dip;
+	bio->bi_end_io = btrfs_end_dio_bio;
+	atomic_inc(&dip->pending_bios);
+
+	map_length = orig_bio->bi_size;
+	ret = btrfs_map_block(map_tree, READ, start_sector << 9,
+			      &map_length, NULL, 0);
+	if (ret) {
+		bio_put(bio);
+		return -EIO;
+	}
+
+	while (bvec <= (orig_bio->bi_io_vec + orig_bio->bi_vcnt - 1)) {
+		if (unlikely(map_length < submit_len + bvec->bv_len ||
+		    bio_add_page(bio, bvec->bv_page, bvec->bv_len,
+				 bvec->bv_offset) < bvec->bv_len)) {
+			/*
+			 * inc the count before we submit the bio so
+			 * we know the end IO handler won't happen before
+			 * we inc the count. Otherwise, the dip might get freed
+			 * before we're done setting it up
+			 */
+			atomic_inc(&dip->pending_bios);
+			ret = __btrfs_submit_dio_bio(bio, inode, rw,
+						     file_offset, skip_sum,
+						     csums);
+			if (ret) {
+				bio_put(bio);
+				atomic_dec(&dip->pending_bios);
+				goto out_err;
+			}
+
+			if (!skip_sum)
+				csums = csums + nr_pages;
+			start_sector += submit_len >> 9;
+			file_offset += submit_len;
+
+			submit_len = 0;
+			nr_pages = 0;
+
+			bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev,
+						  start_sector, GFP_NOFS);
+			if (!bio)
+				goto out_err;
+			bio->bi_private = dip;
+			bio->bi_end_io = btrfs_end_dio_bio;
+
+			map_length = orig_bio->bi_size;
+			ret = btrfs_map_block(map_tree, READ, start_sector << 9,
+					      &map_length, NULL, 0);
+			if (ret) {
+				bio_put(bio);
+				goto out_err;
+			}
+		} else {
+			submit_len += bvec->bv_len;
+			nr_pages ++;
+			bvec++;
+		}
+	}
+
+	ret = __btrfs_submit_dio_bio(bio, inode, rw, file_offset, skip_sum,
+				     csums);
+	if (!ret)
+		return 0;
+
+	bio_put(bio);
+out_err:
+	dip->errors = 1;
+	/*
+	 * before atomic variable goto zero, we must
+	 * make sure dip->errors is perceived to be set.
+	 */
+	smp_mb__before_atomic_dec();
+	if (atomic_dec_and_test(&dip->pending_bios))
+		bio_io_error(dip->orig_bio);
+
+	/* bio_end_io() will handle error, so we needn't return it */
+	return 0;
+}
+
 static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
 				loff_t file_offset)
 {
@@ -5723,36 +5915,18 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
 
 	dip->disk_bytenr = (u64)bio->bi_sector << 9;
 	bio->bi_private = dip;
+	dip->errors = 0;
+	dip->orig_bio = bio;
+	atomic_set(&dip->pending_bios, 0);
 
 	if (write)
 		bio->bi_end_io = btrfs_endio_direct_write;
 	else
 		bio->bi_end_io = btrfs_endio_direct_read;
 
-	ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
-	if (ret)
-		goto out_err;
-
-	if (write && !skip_sum) {
-		ret = btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
-				   inode, rw, bio, 0, 0,
-				   dip->logical_offset,
-				   __btrfs_submit_bio_start_direct_io,
-				   __btrfs_submit_bio_done);
-		if (ret)
-			goto out_err;
+	ret = btrfs_submit_direct_hook(rw, dip, skip_sum);
+	if (!ret)
 		return;
-	} else if (!skip_sum)
-		btrfs_lookup_bio_sums_dio(root, inode, bio,
-					  dip->logical_offset, dip->csums);
-
-	ret = btrfs_map_bio(root, rw, bio, 0, 1);
-	if (ret)
-		goto out_err;
-	return;
-out_err:
-	kfree(dip->csums);
-	kfree(dip);
 free_ordered:
 	/*
 	 * If this is a write, we need to clean up the reserved space and kill
@@ -6607,8 +6781,9 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	BUG_ON(ret);
 
 	if (old_inode->i_ino != BTRFS_FIRST_FREE_OBJECTID) {
-		btrfs_log_new_name(trans, old_inode, old_dir,
-				   new_dentry->d_parent);
+		struct dentry *parent = dget_parent(new_dentry);
+		btrfs_log_new_name(trans, old_inode, old_dir, parent);
+		dput(parent);
 		btrfs_end_log_trans(root);
 	}
 out_fail:
@@ -6758,8 +6933,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
 	btrfs_set_trans_block_group(trans, dir);
 
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-				dentry->d_name.len,
-				dentry->d_parent->d_inode->i_ino, objectid,
+				dentry->d_name.len, dir->i_ino, objectid,
 				BTRFS_I(dir)->block_group, S_IFLNK|S_IRWXUGO,
 				&index);
 	err = PTR_ERR(inode);
@@ -6773,7 +6947,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
 	}
 
 	btrfs_set_trans_block_group(trans, inode);
-	err = btrfs_add_nondir(trans, dentry, inode, 0, index);
+	err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
 	if (err)
 		drop_inode = 1;
 	else {
@@ -6844,6 +7018,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct btrfs_key ins;
 	u64 cur_offset = start;
+	u64 i_size;
 	int ret = 0;
 	bool own_trans = true;
 
@@ -6885,11 +7060,11 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
 		    (actual_len > inode->i_size) &&
 		    (cur_offset > inode->i_size)) {
 			if (cur_offset > actual_len)
-				i_size_write(inode, actual_len);
+				i_size = actual_len;
 			else
-				i_size_write(inode, cur_offset);
-			i_size_write(inode, cur_offset);
-			btrfs_ordered_update_i_size(inode, cur_offset, NULL);
+				i_size = cur_offset;
+			i_size_write(inode, i_size);
+			btrfs_ordered_update_i_size(inode, i_size, NULL);
 		}
 
 		ret = btrfs_update_inode(trans, root, inode);
@@ -6943,6 +7118,10 @@ static long btrfs_fallocate(struct inode *inode, int mode,
 	btrfs_wait_ordered_range(inode, alloc_start, alloc_end - alloc_start);
 
 	mutex_lock(&inode->i_mutex);
+	ret = inode_newsize_ok(inode, alloc_end);
+	if (ret)
+		goto out;
+
 	if (alloc_start > inode->i_size) {
 		ret = btrfs_cont_expand(inode, alloc_start);
 		if (ret)
@@ -7139,6 +7318,7 @@ static const struct inode_operations btrfs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
+	.getattr	= btrfs_getattr,
 	.permission	= btrfs_permission,
 	.setxattr	= btrfs_setxattr,
 	.getxattr	= btrfs_getxattr,
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 463d91b4dd3a..f1c9bb4079ed 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -233,7 +233,8 @@ static noinline int create_subvol(struct btrfs_root *root,
 	struct btrfs_inode_item *inode_item;
 	struct extent_buffer *leaf;
 	struct btrfs_root *new_root;
-	struct inode *dir = dentry->d_parent->d_inode;
+	struct dentry *parent = dget_parent(dentry);
+	struct inode *dir;
 	int ret;
 	int err;
 	u64 objectid;
@@ -242,8 +243,13 @@ static noinline int create_subvol(struct btrfs_root *root,
 
 	ret = btrfs_find_free_objectid(NULL, root->fs_info->tree_root,
 				       0, &objectid);
-	if (ret)
+	if (ret) {
+		dput(parent);
 		return ret;
+	}
+
+	dir = parent->d_inode;
+
 	/*
 	 * 1 - inode item
 	 * 2 - refs
@@ -251,8 +257,10 @@ static noinline int create_subvol(struct btrfs_root *root,
 	 * 2 - dir items
 	 */
 	trans = btrfs_start_transaction(root, 6);
-	if (IS_ERR(trans))
+	if (IS_ERR(trans)) {
+		dput(parent);
 		return PTR_ERR(trans);
+	}
 
 	leaf = btrfs_alloc_free_block(trans, root, root->leafsize,
 				      0, objectid, NULL, 0, 0, 0);
@@ -339,6 +347,7 @@ static noinline int create_subvol(struct btrfs_root *root,
 
 	d_instantiate(dentry, btrfs_lookup_dentry(dir, dentry));
 fail:
+	dput(parent);
 	if (async_transid) {
 		*async_transid = trans->transid;
 		err = btrfs_commit_transaction_async(trans, root, 1);
@@ -354,6 +363,7 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
 			   char *name, int namelen, u64 *async_transid)
 {
 	struct inode *inode;
+	struct dentry *parent;
 	struct btrfs_pending_snapshot *pending_snapshot;
 	struct btrfs_trans_handle *trans;
 	int ret;
@@ -396,7 +406,9 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
 
 	btrfs_orphan_cleanup(pending_snapshot->snap);
 
-	inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry);
+	parent = dget_parent(dentry);
+	inode = btrfs_lookup_dentry(parent->d_inode, dentry);
+	dput(parent);
 	if (IS_ERR(inode)) {
 		ret = PTR_ERR(inode);
 		goto fail;
@@ -1669,12 +1681,11 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 		olen = len = src->i_size - off;
 	/* if we extend to eof, continue to block boundary */
 	if (off + len == src->i_size)
-		len = ((src->i_size + bs-1) & ~(bs-1))
-			- off;
+		len = ALIGN(src->i_size, bs) - off;
 
 	/* verify the end result is block aligned */
-	if ((off & (bs-1)) ||
-	    ((off + len) & (bs-1)))
+	if (!IS_ALIGNED(off, bs) || !IS_ALIGNED(off + len, bs) ||
+	    !IS_ALIGNED(destoff, bs))
 		goto out_unlock;
 
 	/* do any pending delalloc/csum calc on src, one way or
@@ -1874,8 +1885,8 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
 			 * but shouldn't round up the file size
 			 */
 			endoff = new_key.offset + datal;
-			if (endoff > off+olen)
-				endoff = off+olen;
+			if (endoff > destoff+olen)
+				endoff = destoff+olen;
 			if (endoff > inode->i_size)
 				btrfs_i_size_write(inode, endoff);
 
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index f4621f6deca1..ae7737e352c9 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -248,6 +248,73 @@ int btrfs_add_ordered_sum(struct inode *inode,
 	return 0;
 }
 
+/*
+ * this is used to account for finished IO across a given range
+ * of the file.  The IO may span ordered extents.  If
+ * a given ordered_extent is completely done, 1 is returned, otherwise
+ * 0.
+ *
+ * test_and_set_bit on a flag in the struct btrfs_ordered_extent is used
+ * to make sure this function only returns 1 once for a given ordered extent.
+ *
+ * file_offset is updated to one byte past the range that is recorded as
+ * complete.  This allows you to walk forward in the file.
+ */
+int btrfs_dec_test_first_ordered_pending(struct inode *inode,
+				   struct btrfs_ordered_extent **cached,
+				   u64 *file_offset, u64 io_size)
+{
+	struct btrfs_ordered_inode_tree *tree;
+	struct rb_node *node;
+	struct btrfs_ordered_extent *entry = NULL;
+	int ret;
+	u64 dec_end;
+	u64 dec_start;
+	u64 to_dec;
+
+	tree = &BTRFS_I(inode)->ordered_tree;
+	spin_lock(&tree->lock);
+	node = tree_search(tree, *file_offset);
+	if (!node) {
+		ret = 1;
+		goto out;
+	}
+
+	entry = rb_entry(node, struct btrfs_ordered_extent, rb_node);
+	if (!offset_in_entry(entry, *file_offset)) {
+		ret = 1;
+		goto out;
+	}
+
+	dec_start = max(*file_offset, entry->file_offset);
+	dec_end = min(*file_offset + io_size, entry->file_offset +
+		      entry->len);
+	*file_offset = dec_end;
+	if (dec_start > dec_end) {
+		printk(KERN_CRIT "bad ordering dec_start %llu end %llu\n",
+		       (unsigned long long)dec_start,
+		       (unsigned long long)dec_end);
+	}
+	to_dec = dec_end - dec_start;
+	if (to_dec > entry->bytes_left) {
+		printk(KERN_CRIT "bad ordered accounting left %llu size %llu\n",
+		       (unsigned long long)entry->bytes_left,
+		       (unsigned long long)to_dec);
+	}
+	entry->bytes_left -= to_dec;
+	if (entry->bytes_left == 0)
+		ret = test_and_set_bit(BTRFS_ORDERED_IO_DONE, &entry->flags);
+	else
+		ret = 1;
+out:
+	if (!ret && cached && entry) {
+		*cached = entry;
+		atomic_inc(&entry->refs);
+	}
+	spin_unlock(&tree->lock);
+	return ret == 0;
+}
+
 /*
  * this is used to account for finished IO across a given range
  * of the file.  The IO should not span ordered extents.  If
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index 8ac365492a3f..61dca83119dd 100644
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -141,6 +141,9 @@ int btrfs_remove_ordered_extent(struct inode *inode,
 int btrfs_dec_test_ordered_pending(struct inode *inode,
 				   struct btrfs_ordered_extent **cached,
 				   u64 file_offset, u64 io_size);
+int btrfs_dec_test_first_ordered_pending(struct inode *inode,
+				   struct btrfs_ordered_extent **cached,
+				   u64 *file_offset, u64 io_size);
 int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
 			     u64 start, u64 len, u64 disk_len, int type);
 int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 8299a25ffc8f..dbb51ea7a13c 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -244,6 +244,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
 		case Opt_space_cache:
 			printk(KERN_INFO "btrfs: enabling disk space caching\n");
 			btrfs_set_opt(info->mount_opt, SPACE_CACHE);
+			break;
 		case Opt_clear_cache:
 			printk(KERN_INFO "btrfs: force clearing of disk cache\n");
 			btrfs_set_opt(info->mount_opt, CLEAR_CACHE);
@@ -562,12 +563,26 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
 
 static int btrfs_test_super(struct super_block *s, void *data)
 {
-	struct btrfs_fs_devices *test_fs_devices = data;
+	struct btrfs_root *test_root = data;
 	struct btrfs_root *root = btrfs_sb(s);
 
-	return root->fs_info->fs_devices == test_fs_devices;
+	/*
+	 * If this super block is going away, return false as it
+	 * can't match as an existing super block.
+	 */
+	if (!atomic_read(&s->s_active))
+		return 0;
+	return root->fs_info->fs_devices == test_root->fs_info->fs_devices;
 }
 
+static int btrfs_set_super(struct super_block *s, void *data)
+{
+	s->s_fs_info = data;
+
+	return set_anon_super(s, data);
+}
+
+
 /*
  * Find a superblock for the given device / mount point.
  *
@@ -581,6 +596,8 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
 	struct super_block *s;
 	struct dentry *root;
 	struct btrfs_fs_devices *fs_devices = NULL;
+	struct btrfs_root *tree_root = NULL;
+	struct btrfs_fs_info *fs_info = NULL;
 	fmode_t mode = FMODE_READ;
 	char *subvol_name = NULL;
 	u64 subvol_objectid = 0;
@@ -608,8 +625,24 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
 		goto error_close_devices;
 	}
 
+	/*
+	 * Setup a dummy root and fs_info for test/set super.  This is because
+	 * we don't actually fill this stuff out until open_ctree, but we need
+	 * it for searching for existing supers, so this lets us do that and
+	 * then open_ctree will properly initialize everything later.
+	 */
+	fs_info = kzalloc(sizeof(struct btrfs_fs_info), GFP_NOFS);
+	tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
+	if (!fs_info || !tree_root) {
+		error = -ENOMEM;
+		goto error_close_devices;
+	}
+	fs_info->tree_root = tree_root;
+	fs_info->fs_devices = fs_devices;
+	tree_root->fs_info = fs_info;
+
 	bdev = fs_devices->latest_bdev;
-	s = sget(fs_type, btrfs_test_super, set_anon_super, fs_devices);
+	s = sget(fs_type, btrfs_test_super, btrfs_set_super, tree_root);
 	if (IS_ERR(s))
 		goto error_s;
 
@@ -675,6 +708,8 @@ error_s:
 	error = PTR_ERR(s);
 error_close_devices:
 	btrfs_close_devices(fs_devices);
+	kfree(fs_info);
+	kfree(tree_root);
 error_free_subvol_name:
 	kfree(subvol_name);
 	return ERR_PTR(error);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 1fffbc017bdf..f50e931fc217 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -902,6 +902,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 	struct btrfs_root *root = pending->root;
 	struct btrfs_root *parent_root;
 	struct inode *parent_inode;
+	struct dentry *parent;
 	struct dentry *dentry;
 	struct extent_buffer *tmp;
 	struct extent_buffer *old;
@@ -941,7 +942,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 	trans->block_rsv = &pending->block_rsv;
 
 	dentry = pending->dentry;
-	parent_inode = dentry->d_parent->d_inode;
+	parent = dget_parent(dentry);
+	parent_inode = parent->d_inode;
 	parent_root = BTRFS_I(parent_inode)->root;
 	record_root_in_trans(trans, parent_root);
 
@@ -989,6 +991,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
 				 parent_inode->i_ino, index,
 				 dentry->d_name.name, dentry->d_name.len);
 	BUG_ON(ret);
+	dput(parent);
 
 	key.offset = (u64)-1;
 	pending->snap = btrfs_read_fs_root_no_name(root->fs_info, &key);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index a29f19384a27..054744ac5719 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2869,6 +2869,7 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
 {
 	int ret = 0;
 	struct btrfs_root *root;
+	struct dentry *old_parent = NULL;
 
 	/*
 	 * for regular files, if its inode is already on disk, we don't
@@ -2910,10 +2911,13 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
 		if (IS_ROOT(parent))
 			break;
 
-		parent = parent->d_parent;
+		parent = dget_parent(parent);
+		dput(old_parent);
+		old_parent = parent;
 		inode = parent->d_inode;
 
 	}
+	dput(old_parent);
 out:
 	return ret;
 }
@@ -2945,6 +2949,7 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
 {
 	int inode_only = exists_only ? LOG_INODE_EXISTS : LOG_INODE_ALL;
 	struct super_block *sb;
+	struct dentry *old_parent = NULL;
 	int ret = 0;
 	u64 last_committed = root->fs_info->last_trans_committed;
 
@@ -3016,10 +3021,13 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
 		if (IS_ROOT(parent))
 			break;
 
-		parent = parent->d_parent;
+		parent = dget_parent(parent);
+		dput(old_parent);
+		old_parent = parent;
 	}
 	ret = 0;
 end_trans:
+	dput(old_parent);
 	if (ret < 0) {
 		BUG_ON(ret != -ENOSPC);
 		root->fs_info->last_trans_log_full_commit = trans->transid;
@@ -3039,8 +3047,13 @@ end_no_trans:
 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root, struct dentry *dentry)
 {
-	return btrfs_log_inode_parent(trans, root, dentry->d_inode,
-				      dentry->d_parent, 0);
+	struct dentry *parent = dget_parent(dentry);
+	int ret;
+
+	ret = btrfs_log_inode_parent(trans, root, dentry->d_inode, parent, 0);
+	dput(parent);
+
+	return ret;
 }
 
 /*
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 58a9b9998b42..f606baf9ba72 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -631,6 +631,7 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
 			     struct fs_disk_quota *fdq)
 {
 	struct inode *inode = &ip->i_inode;
+	struct gfs2_sbd *sdp = GFS2_SB(inode);
 	struct address_space *mapping = inode->i_mapping;
 	unsigned long index = loc >> PAGE_CACHE_SHIFT;
 	unsigned offset = loc & (PAGE_CACHE_SIZE - 1);
@@ -658,11 +659,11 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
 	qd->qd_qb.qb_value = qp->qu_value;
 	if (fdq) {
 		if (fdq->d_fieldmask & FS_DQ_BSOFT) {
-			qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit);
+			qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift);
 			qd->qd_qb.qb_warn = qp->qu_warn;
 		}
 		if (fdq->d_fieldmask & FS_DQ_BHARD) {
-			qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit);
+			qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift);
 			qd->qd_qb.qb_limit = qp->qu_limit;
 		}
 	}
@@ -1497,9 +1498,9 @@ static int gfs2_get_dqblk(struct super_block *sb, int type, qid_t id,
 	fdq->d_version = FS_DQUOT_VERSION;
 	fdq->d_flags = (type == QUOTA_USER) ? FS_USER_QUOTA : FS_GROUP_QUOTA;
 	fdq->d_id = id;
-	fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit);
-	fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn);
-	fdq->d_bcount = be64_to_cpu(qlvb->qb_value);
+	fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_fsb2bb_shift;
+	fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_fsb2bb_shift;
+	fdq->d_bcount = be64_to_cpu(qlvb->qb_value) << sdp->sd_fsb2bb_shift;
 
 	gfs2_glock_dq_uninit(&q_gh);
 out:
@@ -1566,10 +1567,10 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
 
 	/* If nothing has changed, this is a no-op */
 	if ((fdq->d_fieldmask & FS_DQ_BSOFT) &&
-	    (fdq->d_blk_softlimit == be64_to_cpu(qd->qd_qb.qb_warn)))
+	    ((fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_warn)))
 		fdq->d_fieldmask ^= FS_DQ_BSOFT;
 	if ((fdq->d_fieldmask & FS_DQ_BHARD) &&
-	    (fdq->d_blk_hardlimit == be64_to_cpu(qd->qd_qb.qb_limit)))
+	    ((fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_limit)))
 		fdq->d_fieldmask ^= FS_DQ_BHARD;
 	if (fdq->d_fieldmask == 0)
 		goto out_i;
diff --git a/fs/ioprio.c b/fs/ioprio.c
index 2f7d05c89922..7da2a06508e5 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -103,22 +103,15 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
 	}
 
 	ret = -ESRCH;
-	/*
-	 * We want IOPRIO_WHO_PGRP/IOPRIO_WHO_USER to be "atomic",
-	 * so we can't use rcu_read_lock(). See re-copy of ->ioprio
-	 * in copy_process().
-	 */
-	read_lock(&tasklist_lock);
+	rcu_read_lock();
 	switch (which) {
 		case IOPRIO_WHO_PROCESS:
-			rcu_read_lock();
 			if (!who)
 				p = current;
 			else
 				p = find_task_by_vpid(who);
 			if (p)
 				ret = set_task_ioprio(p, ioprio);
-			rcu_read_unlock();
 			break;
 		case IOPRIO_WHO_PGRP:
 			if (!who)
@@ -141,12 +134,7 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
 				break;
 
 			do_each_thread(g, p) {
-				int match;
-
-				rcu_read_lock();
-				match = __task_cred(p)->uid == who;
-				rcu_read_unlock();
-				if (!match)
+				if (__task_cred(p)->uid != who)
 					continue;
 				ret = set_task_ioprio(p, ioprio);
 				if (ret)
@@ -160,7 +148,7 @@ free_uid:
 			ret = -EINVAL;
 	}
 
-	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
 	return ret;
 }
 
@@ -204,17 +192,15 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
 	int ret = -ESRCH;
 	int tmpio;
 
-	read_lock(&tasklist_lock);
+	rcu_read_lock();
 	switch (which) {
 		case IOPRIO_WHO_PROCESS:
-			rcu_read_lock();
 			if (!who)
 				p = current;
 			else
 				p = find_task_by_vpid(who);
 			if (p)
 				ret = get_task_ioprio(p);
-			rcu_read_unlock();
 			break;
 		case IOPRIO_WHO_PGRP:
 			if (!who)
@@ -241,12 +227,7 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
 				break;
 
 			do_each_thread(g, p) {
-				int match;
-
-				rcu_read_lock();
-				match = __task_cred(p)->uid == user->uid;
-				rcu_read_unlock();
-				if (!match)
+				if (__task_cred(p)->uid != user->uid)
 					continue;
 				tmpio = get_task_ioprio(p);
 				if (tmpio < 0)
@@ -264,6 +245,6 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
 			ret = -EINVAL;
 	}
 
-	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
 	return ret;
 }
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 662df2a5fad5..8ea4a4180a87 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -162,6 +162,7 @@ struct nfs_cache_array_entry {
 	u64 cookie;
 	u64 ino;
 	struct qstr string;
+	unsigned char d_type;
 };
 
 struct nfs_cache_array {
@@ -171,8 +172,6 @@ struct nfs_cache_array {
 	struct nfs_cache_array_entry array[0];
 };
 
-#define MAX_READDIR_ARRAY ((PAGE_SIZE - sizeof(struct nfs_cache_array)) / sizeof(struct nfs_cache_array_entry))
-
 typedef __be32 * (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
 typedef struct {
 	struct file	*file;
@@ -257,13 +256,17 @@ int nfs_readdir_add_to_array(struct nfs_entry *entry, struct page *page)
 
 	if (IS_ERR(array))
 		return PTR_ERR(array);
-	ret = -ENOSPC;
-	if (array->size >= MAX_READDIR_ARRAY)
-		goto out;
 
 	cache_entry = &array->array[array->size];
+
+	/* Check that this entry lies within the page bounds */
+	ret = -ENOSPC;
+	if ((char *)&cache_entry[1] - (char *)page_address(page) > PAGE_SIZE)
+		goto out;
+
 	cache_entry->cookie = entry->prev_cookie;
 	cache_entry->ino = entry->ino;
+	cache_entry->d_type = entry->d_type;
 	ret = nfs_readdir_make_qstr(&cache_entry->string, entry->name, entry->len);
 	if (ret)
 		goto out;
@@ -466,8 +469,9 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
 	struct xdr_stream stream;
 	struct xdr_buf buf;
 	__be32 *ptr = xdr_page;
-	int status;
 	struct nfs_cache_array *array;
+	unsigned int count = 0;
+	int status;
 
 	buf.head->iov_base = xdr_page;
 	buf.head->iov_len = buflen;
@@ -488,6 +492,8 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
 			break;
 		}
 
+		count++;
+
 		if (desc->plus == 1)
 			nfs_prime_dcache(desc->file->f_path.dentry, entry);
 
@@ -496,13 +502,14 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
 			break;
 	} while (!entry->eof);
 
-	if (status == -EBADCOOKIE && entry->eof) {
+	if (count == 0 || (status == -EBADCOOKIE && entry->eof == 1)) {
 		array = nfs_readdir_get_array(page);
 		if (!IS_ERR(array)) {
 			array->eof_index = array->size;
 			status = 0;
 			nfs_readdir_release_array(page);
-		}
+		} else
+			status = PTR_ERR(array);
 	}
 	return status;
 }
@@ -696,21 +703,23 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
 	int i = 0;
 	int res = 0;
 	struct nfs_cache_array *array = NULL;
-	unsigned int d_type = DT_UNKNOWN;
-	struct dentry *dentry = NULL;
 
 	array = nfs_readdir_get_array(desc->page);
-	if (IS_ERR(array))
-		return PTR_ERR(array);
+	if (IS_ERR(array)) {
+		res = PTR_ERR(array);
+		goto out;
+	}
 
 	for (i = desc->cache_entry_index; i < array->size; i++) {
-		d_type = DT_UNKNOWN;
+		struct nfs_cache_array_entry *ent;
 
-		res = filldir(dirent, array->array[i].string.name,
-			array->array[i].string.len, file->f_pos,
-			nfs_compat_user_ino64(array->array[i].ino), d_type);
-		if (res < 0)
+		ent = &array->array[i];
+		if (filldir(dirent, ent->string.name, ent->string.len,
+		    file->f_pos, nfs_compat_user_ino64(ent->ino),
+		    ent->d_type) < 0) {
+			desc->eof = 1;
 			break;
+		}
 		file->f_pos++;
 		desc->cache_entry_index = i;
 		if (i < (array->size-1))
@@ -722,9 +731,8 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
 		desc->eof = 1;
 
 	nfs_readdir_release_array(desc->page);
+out:
 	cache_page_release(desc);
-	if (dentry != NULL)
-		dput(dentry);
 	dfprintk(DIRCACHE, "NFS: nfs_do_filldir() filling ended @ cookie %Lu; returning = %d\n",
 			(unsigned long long)*desc->dir_cookie, res);
 	return res;
@@ -759,13 +767,13 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
 		goto out;
 	}
 
-	if (nfs_readdir_xdr_to_array(desc, page, inode) == -1) {
-		status = -EIO;
-		goto out_release;
-	}
-
 	desc->page_index = 0;
 	desc->page = page;
+
+	status = nfs_readdir_xdr_to_array(desc, page, inode);
+	if (status < 0)
+		goto out_release;
+
 	status = nfs_do_filldir(desc, dirent, filldir);
 
  out:
@@ -816,14 +824,14 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 		res = readdir_search_pagecache(desc);
 
 		if (res == -EBADCOOKIE) {
+			res = 0;
 			/* This means either end of directory */
 			if (*desc->dir_cookie && desc->eof == 0) {
 				/* Or that the server has 'lost' a cookie */
 				res = uncached_readdir(desc, dirent, filldir);
-				if (res >= 0)
+				if (res == 0)
 					continue;
 			}
-			res = 0;
 			break;
 		}
 		if (res == -ETOOSMALL && desc->plus) {
@@ -838,10 +846,8 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 			break;
 
 		res = nfs_do_filldir(desc, dirent, filldir);
-		if (res < 0) {
-			res = 0;
+		if (res < 0)
 			break;
-		}
 	}
 out:
 	nfs_unblock_sillyrename(dentry);
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 84d3c8b90206..e6ace0d93c71 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -867,7 +867,7 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
 		goto out;
 	nfs_alloc_commit_data(dreq);
 
-	if (dreq->commit_data == NULL || count < wsize)
+	if (dreq->commit_data == NULL || count <= wsize)
 		sync = NFS_FILE_SYNC;
 
 	dreq->inode = inode;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index db08ff3ff454..e6356b750b77 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -361,6 +361,15 @@ unsigned int nfs_page_length(struct page *page)
 	return 0;
 }
 
+/*
+ * Convert a umode to a dirent->d_type
+ */
+static inline
+unsigned char nfs_umode_to_dtype(umode_t mode)
+{
+	return (mode >> 12) & 15;
+}
+
 /*
  * Determine the number of pages in an array of length 'len' and
  * with a base offset of 'base'
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 2563f765c9b4..5914a1911c95 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -485,6 +485,8 @@ nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_se
 	entry->prev_cookie	  = entry->cookie;
 	entry->cookie	  = ntohl(*p++);
 
+	entry->d_type = DT_UNKNOWN;
+
 	p = xdr_inline_peek(xdr, 8);
 	if (p != NULL)
 		entry->eof = !p[0] && p[1];
@@ -495,7 +497,7 @@ nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_se
 
 out_overflow:
 	print_overflow_msg(__func__, xdr);
-	return ERR_PTR(-EIO);
+	return ERR_PTR(-EAGAIN);
 }
 
 /*
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 748dc91a4a14..f6cc60f06dac 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -622,11 +622,13 @@ nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_s
 	entry->prev_cookie = entry->cookie;
 	p = xdr_decode_hyper(p, &entry->cookie);
 
+	entry->d_type = DT_UNKNOWN;
 	if (plus) {
 		entry->fattr->valid = 0;
 		p = xdr_decode_post_op_attr_stream(xdr, entry->fattr);
 		if (IS_ERR(p))
 			goto out_overflow_exit;
+		entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
 		/* In fact, a post_op_fh3: */
 		p = xdr_inline_decode(xdr, 4);
 		if (unlikely(!p))
@@ -656,7 +658,7 @@ nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_s
 out_overflow:
 	print_overflow_msg(__func__, xdr);
 out_overflow_exit:
-	return ERR_PTR(-EIO);
+	return ERR_PTR(-EAGAIN);
 }
 
 /*
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index b7a204ff6fe1..9f1826b012e6 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -6208,6 +6208,10 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
 	if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
 		entry->ino = entry->fattr->fileid;
 
+	entry->d_type = DT_UNKNOWN;
+	if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
+		entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
+
 	if (verify_attr_len(xdr, p, len) < 0)
 		goto out_overflow;
 
@@ -6221,7 +6225,7 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
 
 out_overflow:
 	print_overflow_msg(__func__, xdr);
-	return ERR_PTR(-EIO);
+	return ERR_PTR(-EAGAIN);
 }
 
 /*
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index 49c844dab33a..59e5fe742f7b 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -335,7 +335,7 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr)
 	 * the device at this point.
 	 *
 	 * To prevent nilfs_dat_translate() from returning the
-	 * uncommited block number, this makes a copy of the entry
+	 * uncommitted block number, this makes a copy of the entry
 	 * buffer and redirects nilfs_dat_translate() to the copy.
 	 */
 	if (!buffer_nilfs_redirected(entry_bh)) {
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 3e90f86d5bfe..e00d9457c256 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -349,8 +349,8 @@ static int nilfs_ioctl_move_blocks(struct super_block *sb,
 		ino = vdesc->vd_ino;
 		cno = vdesc->vd_cno;
 		inode = nilfs_iget_for_gc(sb, ino, cno);
-		if (unlikely(inode == NULL)) {
-			ret = -ENOMEM;
+		if (IS_ERR(inode)) {
+			ret = PTR_ERR(inode);
 			goto failed;
 		}
 		do {
diff --git a/fs/pipe.c b/fs/pipe.c
index a8012a955720..04629f36e397 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1199,12 +1199,24 @@ int pipe_proc_fn(struct ctl_table *table, int write, void __user *buf,
 	return ret;
 }
 
+/*
+ * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same
+ * location, so checking ->i_pipe is not enough to verify that this is a
+ * pipe.
+ */
+struct pipe_inode_info *get_pipe_info(struct file *file)
+{
+	struct inode *i = file->f_path.dentry->d_inode;
+
+	return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL;
+}
+
 long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	struct pipe_inode_info *pipe;
 	long ret;
 
-	pipe = file->f_path.dentry->d_inode->i_pipe;
+	pipe = get_pipe_info(file);
 	if (!pipe)
 		return -EBADF;
 
diff --git a/fs/splice.c b/fs/splice.c
index 8f1dfaecc8f0..ce2f02579e35 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1311,18 +1311,6 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
 static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe,
 			       struct pipe_inode_info *opipe,
 			       size_t len, unsigned int flags);
-/*
- * After the inode slimming patch, i_pipe/i_bdev/i_cdev share the same
- * location, so checking ->i_pipe is not enough to verify that this is a
- * pipe.
- */
-static inline struct pipe_inode_info *pipe_info(struct inode *inode)
-{
-	if (S_ISFIFO(inode->i_mode))
-		return inode->i_pipe;
-
-	return NULL;
-}
 
 /*
  * Determine where to splice to/from.
@@ -1336,8 +1324,8 @@ static long do_splice(struct file *in, loff_t __user *off_in,
 	loff_t offset, *off;
 	long ret;
 
-	ipipe = pipe_info(in->f_path.dentry->d_inode);
-	opipe = pipe_info(out->f_path.dentry->d_inode);
+	ipipe = get_pipe_info(in);
+	opipe = get_pipe_info(out);
 
 	if (ipipe && opipe) {
 		if (off_in || off_out)
@@ -1555,7 +1543,7 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *iov,
 	int error;
 	long ret;
 
-	pipe = pipe_info(file->f_path.dentry->d_inode);
+	pipe = get_pipe_info(file);
 	if (!pipe)
 		return -EBADF;
 
@@ -1642,7 +1630,7 @@ static long vmsplice_to_pipe(struct file *file, const struct iovec __user *iov,
 	};
 	long ret;
 
-	pipe = pipe_info(file->f_path.dentry->d_inode);
+	pipe = get_pipe_info(file);
 	if (!pipe)
 		return -EBADF;
 
@@ -2022,8 +2010,8 @@ static int link_pipe(struct pipe_inode_info *ipipe,
 static long do_tee(struct file *in, struct file *out, size_t len,
 		   unsigned int flags)
 {
-	struct pipe_inode_info *ipipe = pipe_info(in->f_path.dentry->d_inode);
-	struct pipe_inode_info *opipe = pipe_info(out->f_path.dentry->d_inode);
+	struct pipe_inode_info *ipipe = get_pipe_info(in);
+	struct pipe_inode_info *opipe = get_pipe_info(out);
 	int ret = -EINVAL;
 
 	/*
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index a7d9dc21391d..7b776d71d36d 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -175,10 +175,21 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
 	return 0;
 }
 
-#define enable_intr_remapping(mode)	(-1)
-#define disable_intr_remapping()	(0)
-#define reenable_intr_remapping(mode)	(0)
 #define intr_remapping_enabled		(0)
+
+static inline int enable_intr_remapping(int eim)
+{
+	return -1;
+}
+
+static inline void disable_intr_remapping(void)
+{
+}
+
+static inline int reenable_intr_remapping(int eim)
+{
+	return 0;
+}
 #endif
 
 /* Can't use the common MSI interrupt functions
diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index a2d6ea49ec56..d1e55fed2c7d 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -33,6 +33,8 @@ enum bp_type_idx {
 
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
 
+extern int __init init_hw_breakpoint(void);
+
 static inline void hw_breakpoint_init(struct perf_event_attr *attr)
 {
 	memset(attr, 0, sizeof(*attr));
@@ -108,6 +110,8 @@ static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
 
 #else /* !CONFIG_HAVE_HW_BREAKPOINT */
 
+static inline int __init init_hw_breakpoint(void) { return 0; }
+
 static inline struct perf_event *
 register_user_hw_breakpoint(struct perf_event_attr *attr,
 			    perf_overflow_handler_t triggered,
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 6d87f68ce4b6..30f6fad99a58 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -168,6 +168,7 @@ struct mmc_host {
 						/* DDR mode at 1.8V */
 #define MMC_CAP_1_2V_DDR	(1 << 12)	/* can support */
 						/* DDR mode at 1.2V */
+#define MMC_CAP_POWER_OFF_CARD	(1 << 13)	/* Can power off after boot */
 
 	mmc_pm_flag_t		pm_caps;	/* supported pm features */
 
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index ba6cc8f223c9..80f07198a31a 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -483,6 +483,7 @@ struct nfs_entry {
 	int			eof;
 	struct nfs_fh *		fh;
 	struct nfs_fattr *	fattr;
+	unsigned char		d_type;
 };
 
 /*
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index c6bcfe93b9ca..cb845c16ad7d 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2047,6 +2047,7 @@
 #define PCI_DEVICE_ID_AFAVLAB_P030	0x2182
 #define PCI_SUBDEVICE_ID_AFAVLAB_P061		0x2150
 
+#define PCI_VENDOR_ID_BCM_GVC          0x14a4
 #define PCI_VENDOR_ID_BROADCOM		0x14e4
 #define PCI_DEVICE_ID_TIGON3_5752	0x1600
 #define PCI_DEVICE_ID_TIGON3_5752M	0x1601
@@ -2441,6 +2442,7 @@
 #define PCI_DEVICE_ID_INTEL_MFD_SDIO2	0x0822
 #define PCI_DEVICE_ID_INTEL_MFD_EMMC0	0x0823
 #define PCI_DEVICE_ID_INTEL_MFD_EMMC1	0x0824
+#define PCI_DEVICE_ID_INTEL_MRST_SD2	0x084F
 #define PCI_DEVICE_ID_INTEL_I960	0x0960
 #define PCI_DEVICE_ID_INTEL_I960RM	0x0962
 #define PCI_DEVICE_ID_INTEL_8257X_SOL	0x1062
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 40150f345982..de2c41758e29 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -850,6 +850,7 @@ struct perf_event_context {
 	int				nr_active;
 	int				is_active;
 	int				nr_stat;
+	int				rotate_disable;
 	atomic_t			refcount;
 	struct task_struct		*task;
 
@@ -908,20 +909,6 @@ extern int perf_num_counters(void);
 extern const char *perf_pmu_name(void);
 extern void __perf_event_task_sched_in(struct task_struct *task);
 extern void __perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
-
-extern atomic_t perf_task_events;
-
-static inline void perf_event_task_sched_in(struct task_struct *task)
-{
-	COND_STMT(&perf_task_events, __perf_event_task_sched_in(task));
-}
-
-static inline
-void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next)
-{
-	COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next));
-}
-
 extern int perf_event_init_task(struct task_struct *child);
 extern void perf_event_exit_task(struct task_struct *child);
 extern void perf_event_free_task(struct task_struct *task);
@@ -1030,6 +1017,21 @@ have_event:
 	__perf_sw_event(event_id, nr, nmi, regs, addr);
 }
 
+extern atomic_t perf_task_events;
+
+static inline void perf_event_task_sched_in(struct task_struct *task)
+{
+	COND_STMT(&perf_task_events, __perf_event_task_sched_in(task));
+}
+
+static inline
+void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next)
+{
+	perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0);
+
+	COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next));
+}
+
 extern void perf_event_mmap(struct vm_area_struct *vma);
 extern struct perf_guest_info_callbacks *perf_guest_cbs;
 extern int perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks);
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 445796945ac9..bb27d7ec2fb9 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -160,5 +160,6 @@ void generic_pipe_buf_release(struct pipe_inode_info *, struct pipe_buffer *);
 
 /* for F_SETPIPE_SZ and F_GETPIPE_SZ */
 long pipe_fcntl(struct file *, unsigned int, unsigned long arg);
+struct pipe_inode_info *get_pipe_info(struct file *file);
 
 #endif
diff --git a/include/linux/serial_reg.h b/include/linux/serial_reg.h
index c7a0ce11cd47..3ecb71a9e505 100644
--- a/include/linux/serial_reg.h
+++ b/include/linux/serial_reg.h
@@ -99,6 +99,13 @@
 #define UART_LCR_WLEN7		0x02 /* Wordlength: 7 bits */
 #define UART_LCR_WLEN8		0x03 /* Wordlength: 8 bits */
 
+/*
+ * Access to some registers depends on register access / configuration
+ * mode.
+ */
+#define UART_LCR_CONF_MODE_A	UART_LCR_DLAB	/* Configutation mode A */
+#define UART_LCR_CONF_MODE_B	0xBF		/* Configutation mode B */
+
 #define UART_MCR	4	/* Out: Modem Control Register */
 #define UART_MCR_CLKSEL		0x80 /* Divide clock by 4 (TI16C752, EFR[4]=1) */
 #define UART_MCR_TCRTLR		0x40 /* Access TCR/TLR (TI16C752, EFR[4]=1) */
@@ -341,5 +348,17 @@
 #define UART_OMAP_SYSS		0x16	/* System status register */
 #define UART_OMAP_WER		0x17	/* Wake-up enable register */
 
+/*
+ * These are the definitions for the MDR1 register
+ */
+#define UART_OMAP_MDR1_16X_MODE		0x00	/* UART 16x mode */
+#define UART_OMAP_MDR1_SIR_MODE		0x01	/* SIR mode */
+#define UART_OMAP_MDR1_16X_ABAUD_MODE	0x02	/* UART 16x auto-baud */
+#define UART_OMAP_MDR1_13X_MODE		0x03	/* UART 13x mode */
+#define UART_OMAP_MDR1_MIR_MODE		0x04	/* MIR mode */
+#define UART_OMAP_MDR1_FIR_MODE		0x05	/* FIR mode */
+#define UART_OMAP_MDR1_CIR_MODE		0x06	/* CIR mode */
+#define UART_OMAP_MDR1_DISABLE		0x07	/* Disable (default state) */
+
 #endif /* _LINUX_SERIAL_REG_H */
 
diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index 90c9e2872f27..18e5c3f67580 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -10,6 +10,7 @@ extern void unix_inflight(struct file *fp);
 extern void unix_notinflight(struct file *fp);
 extern void unix_gc(void);
 extern void wait_for_unix_gc(void);
+extern struct sock *unix_get_socket(struct file *filp);
 
 #define UNIX_HASH_SIZE	256
 
@@ -56,6 +57,7 @@ struct unix_sock {
 	spinlock_t		lock;
 	unsigned int		gc_candidate : 1;
 	unsigned int		gc_maybe_cycle : 1;
+	unsigned char		recursion_level;
 	struct socket_wq	peer_wq;
 };
 #define unix_sk(__sk) ((struct unix_sock *)__sk)
diff --git a/include/sound/sh_fsi.h b/include/sound/sh_fsi.h
index fa60cbda90a4..d79894192ae3 100644
--- a/include/sound/sh_fsi.h
+++ b/include/sound/sh_fsi.h
@@ -85,7 +85,9 @@
  *     ACK_MD (FSI2)
  *     CKG1   (FSI)
  *
- * err:  return value < 0
+ * err		: return value <  0
+ * no change	: return value == 0
+ * change xMD	: return value >  0
  *
  * 0x-00000AB
  *
@@ -111,7 +113,7 @@
 struct sh_fsi_platform_info {
 	unsigned long porta_flags;
 	unsigned long portb_flags;
-	int (*set_rate)(int is_porta, int rate); /* for master mode */
+	int (*set_rate)(struct device *dev, int is_porta, int rate, int enable);
 };
 
 #endif /* __SOUND_FSI_H */
diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c
index 2c9120f0afca..e5325825aeb6 100644
--- a/kernel/hw_breakpoint.c
+++ b/kernel/hw_breakpoint.c
@@ -620,7 +620,7 @@ static struct pmu perf_breakpoint = {
 	.read		= hw_breakpoint_pmu_read,
 };
 
-static int __init init_hw_breakpoint(void)
+int __init init_hw_breakpoint(void)
 {
 	unsigned int **task_bp_pinned;
 	int cpu, err_cpu;
@@ -655,6 +655,5 @@ static int __init init_hw_breakpoint(void)
 
 	return -ENOMEM;
 }
-core_initcall(init_hw_breakpoint);
 
 
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index f16763ff8481..90f881904bb1 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -145,7 +145,9 @@ void irq_work_run(void)
 		 * Clear the BUSY bit and return to the free state if
 		 * no-one else claimed it meanwhile.
 		 */
-		cmpxchg(&entry->next, next_flags(NULL, IRQ_WORK_BUSY), NULL);
+		(void)cmpxchg(&entry->next,
+			      next_flags(NULL, IRQ_WORK_BUSY),
+			      NULL);
 	}
 }
 EXPORT_SYMBOL_GPL(irq_work_run);
diff --git a/kernel/module.c b/kernel/module.c
index 437a74a7524a..d190664f25ff 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2326,6 +2326,18 @@ static void find_module_sections(struct module *mod, struct load_info *info)
 	kmemleak_scan_area(mod->trace_events, sizeof(*mod->trace_events) *
 			   mod->num_trace_events, GFP_KERNEL);
 #endif
+#ifdef CONFIG_TRACING
+	mod->trace_bprintk_fmt_start = section_objs(info, "__trace_printk_fmt",
+					 sizeof(*mod->trace_bprintk_fmt_start),
+					 &mod->num_trace_bprintk_fmt);
+	/*
+	 * This section contains pointers to allocated objects in the trace
+	 * code and not scanning it leads to false positives.
+	 */
+	kmemleak_scan_area(mod->trace_bprintk_fmt_start,
+			   sizeof(*mod->trace_bprintk_fmt_start) *
+			   mod->num_trace_bprintk_fmt, GFP_KERNEL);
+#endif
 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
 	/* sechdrs[0].sh_size is always zero */
 	mod->ftrace_callsites = section_objs(info, "__mcount_loc",
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index cb6c0d2af68f..eac7e3364335 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -31,6 +31,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/perf_event.h>
 #include <linux/ftrace_event.h>
+#include <linux/hw_breakpoint.h>
 
 #include <asm/irq_regs.h>
 
@@ -1286,8 +1287,6 @@ void __perf_event_task_sched_out(struct task_struct *task,
 {
 	int ctxn;
 
-	perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0);
-
 	for_each_task_context_nr(ctxn)
 		perf_event_context_sched_out(task, ctxn, next);
 }
@@ -1621,8 +1620,12 @@ static void rotate_ctx(struct perf_event_context *ctx)
 {
 	raw_spin_lock(&ctx->lock);
 
-	/* Rotate the first entry last of non-pinned groups */
-	list_rotate_left(&ctx->flexible_groups);
+	/*
+	 * Rotate the first entry last of non-pinned groups. Rotation might be
+	 * disabled by the inheritance code.
+	 */
+	if (!ctx->rotate_disable)
+		list_rotate_left(&ctx->flexible_groups);
 
 	raw_spin_unlock(&ctx->lock);
 }
@@ -2234,11 +2237,6 @@ int perf_event_release_kernel(struct perf_event *event)
 	raw_spin_unlock_irq(&ctx->lock);
 	mutex_unlock(&ctx->mutex);
 
-	mutex_lock(&event->owner->perf_event_mutex);
-	list_del_init(&event->owner_entry);
-	mutex_unlock(&event->owner->perf_event_mutex);
-	put_task_struct(event->owner);
-
 	free_event(event);
 
 	return 0;
@@ -2251,9 +2249,43 @@ EXPORT_SYMBOL_GPL(perf_event_release_kernel);
 static int perf_release(struct inode *inode, struct file *file)
 {
 	struct perf_event *event = file->private_data;
+	struct task_struct *owner;
 
 	file->private_data = NULL;
 
+	rcu_read_lock();
+	owner = ACCESS_ONCE(event->owner);
+	/*
+	 * Matches the smp_wmb() in perf_event_exit_task(). If we observe
+	 * !owner it means the list deletion is complete and we can indeed
+	 * free this event, otherwise we need to serialize on
+	 * owner->perf_event_mutex.
+	 */
+	smp_read_barrier_depends();
+	if (owner) {
+		/*
+		 * Since delayed_put_task_struct() also drops the last
+		 * task reference we can safely take a new reference
+		 * while holding the rcu_read_lock().
+		 */
+		get_task_struct(owner);
+	}
+	rcu_read_unlock();
+
+	if (owner) {
+		mutex_lock(&owner->perf_event_mutex);
+		/*
+		 * We have to re-check the event->owner field, if it is cleared
+		 * we raced with perf_event_exit_task(), acquiring the mutex
+		 * ensured they're done, and we can proceed with freeing the
+		 * event.
+		 */
+		if (event->owner)
+			list_del_init(&event->owner_entry);
+		mutex_unlock(&owner->perf_event_mutex);
+		put_task_struct(owner);
+	}
+
 	return perf_event_release_kernel(event);
 }
 
@@ -5677,7 +5709,7 @@ SYSCALL_DEFINE5(perf_event_open,
 	mutex_unlock(&ctx->mutex);
 
 	event->owner = current;
-	get_task_struct(current);
+
 	mutex_lock(&current->perf_event_mutex);
 	list_add_tail(&event->owner_entry, &current->perf_event_list);
 	mutex_unlock(&current->perf_event_mutex);
@@ -5745,12 +5777,6 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu,
 	++ctx->generation;
 	mutex_unlock(&ctx->mutex);
 
-	event->owner = current;
-	get_task_struct(current);
-	mutex_lock(&current->perf_event_mutex);
-	list_add_tail(&event->owner_entry, &current->perf_event_list);
-	mutex_unlock(&current->perf_event_mutex);
-
 	return event;
 
 err_free:
@@ -5901,8 +5927,24 @@ again:
  */
 void perf_event_exit_task(struct task_struct *child)
 {
+	struct perf_event *event, *tmp;
 	int ctxn;
 
+	mutex_lock(&child->perf_event_mutex);
+	list_for_each_entry_safe(event, tmp, &child->perf_event_list,
+				 owner_entry) {
+		list_del_init(&event->owner_entry);
+
+		/*
+		 * Ensure the list deletion is visible before we clear
+		 * the owner, closes a race against perf_release() where
+		 * we need to serialize on the owner->perf_event_mutex.
+		 */
+		smp_wmb();
+		event->owner = NULL;
+	}
+	mutex_unlock(&child->perf_event_mutex);
+
 	for_each_task_context_nr(ctxn)
 		perf_event_exit_task_context(child, ctxn);
 }
@@ -6122,6 +6164,7 @@ int perf_event_init_context(struct task_struct *child, int ctxn)
 	struct perf_event *event;
 	struct task_struct *parent = current;
 	int inherited_all = 1;
+	unsigned long flags;
 	int ret = 0;
 
 	child->perf_event_ctxp[ctxn] = NULL;
@@ -6162,6 +6205,15 @@ int perf_event_init_context(struct task_struct *child, int ctxn)
 			break;
 	}
 
+	/*
+	 * We can't hold ctx->lock when iterating the ->flexible_group list due
+	 * to allocations, but we need to prevent rotation because
+	 * rotate_ctx() will change the list from interrupt context.
+	 */
+	raw_spin_lock_irqsave(&parent_ctx->lock, flags);
+	parent_ctx->rotate_disable = 1;
+	raw_spin_unlock_irqrestore(&parent_ctx->lock, flags);
+
 	list_for_each_entry(event, &parent_ctx->flexible_groups, group_entry) {
 		ret = inherit_task_group(event, parent, parent_ctx,
 					 child, ctxn, &inherited_all);
@@ -6169,6 +6221,10 @@ int perf_event_init_context(struct task_struct *child, int ctxn)
 			break;
 	}
 
+	raw_spin_lock_irqsave(&parent_ctx->lock, flags);
+	parent_ctx->rotate_disable = 0;
+	raw_spin_unlock_irqrestore(&parent_ctx->lock, flags);
+
 	child_ctx = child->perf_event_ctxp[ctxn];
 
 	if (child_ctx && inherited_all) {
@@ -6321,6 +6377,8 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
 
 void __init perf_event_init(void)
 {
+	int ret;
+
 	perf_event_init_all_cpus();
 	init_srcu_struct(&pmus_srcu);
 	perf_pmu_register(&perf_swevent);
@@ -6328,4 +6386,7 @@ void __init perf_event_init(void)
 	perf_pmu_register(&perf_task_clock);
 	perf_tp_register();
 	perf_cpu_notifier(perf_cpu_notify);
+
+	ret = init_hw_breakpoint();
+	WARN(ret, "hw_breakpoint initialization failed with: %d", ret);
 }
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 6842eeba5879..05bb7173850e 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -37,13 +37,13 @@ static int check_clock(const clockid_t which_clock)
 	if (pid == 0)
 		return 0;
 
-	read_lock(&tasklist_lock);
+	rcu_read_lock();
 	p = find_task_by_vpid(pid);
 	if (!p || !(CPUCLOCK_PERTHREAD(which_clock) ?
-		   same_thread_group(p, current) : thread_group_leader(p))) {
+		   same_thread_group(p, current) : has_group_leader_pid(p))) {
 		error = -EINVAL;
 	}
-	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
 
 	return error;
 }
@@ -390,7 +390,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer)
 
 	INIT_LIST_HEAD(&new_timer->it.cpu.entry);
 
-	read_lock(&tasklist_lock);
+	rcu_read_lock();
 	if (CPUCLOCK_PERTHREAD(new_timer->it_clock)) {
 		if (pid == 0) {
 			p = current;
@@ -404,7 +404,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer)
 			p = current->group_leader;
 		} else {
 			p = find_task_by_vpid(pid);
-			if (p && !thread_group_leader(p))
+			if (p && !has_group_leader_pid(p))
 				p = NULL;
 		}
 	}
@@ -414,7 +414,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer)
 	} else {
 		ret = -EINVAL;
 	}
-	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
 
 	return ret;
 }
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 52ab113d8bb9..00ebd7686676 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1758,10 +1758,6 @@ static void pull_task(struct rq *src_rq, struct task_struct *p,
 	set_task_cpu(p, this_cpu);
 	activate_task(this_rq, p, 0);
 	check_preempt_curr(this_rq, p, 0);
-
-	/* re-arm NEWIDLE balancing when moving tasks */
-	src_rq->avg_idle = this_rq->avg_idle = 2*sysctl_sched_migration_cost;
-	this_rq->idle_stamp = 0;
 }
 
 /*
@@ -3219,8 +3215,10 @@ static void idle_balance(int this_cpu, struct rq *this_rq)
 		interval = msecs_to_jiffies(sd->balance_interval);
 		if (time_after(next_balance, sd->last_balance + interval))
 			next_balance = sd->last_balance + interval;
-		if (pulled_task)
+		if (pulled_task) {
+			this_rq->idle_stamp = 0;
 			break;
+		}
 	}
 
 	raw_spin_lock(&this_rq->lock);
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 042084157980..c380612273bf 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1283,6 +1283,8 @@ void trace_dump_stack(void)
 	__ftrace_trace_stack(global_trace.buffer, flags, 3, preempt_count());
 }
 
+static DEFINE_PER_CPU(int, user_stack_count);
+
 void
 ftrace_trace_userstack(struct ring_buffer *buffer, unsigned long flags, int pc)
 {
@@ -1301,6 +1303,18 @@ ftrace_trace_userstack(struct ring_buffer *buffer, unsigned long flags, int pc)
 	if (unlikely(in_nmi()))
 		return;
 
+	/*
+	 * prevent recursion, since the user stack tracing may
+	 * trigger other kernel events.
+	 */
+	preempt_disable();
+	if (__this_cpu_read(user_stack_count))
+		goto out;
+
+	__this_cpu_inc(user_stack_count);
+
+
+
 	event = trace_buffer_lock_reserve(buffer, TRACE_USER_STACK,
 					  sizeof(*entry), flags, pc);
 	if (!event)
@@ -1318,6 +1332,11 @@ ftrace_trace_userstack(struct ring_buffer *buffer, unsigned long flags, int pc)
 	save_stack_trace_user(&trace);
 	if (!filter_check_discard(call, entry, buffer, event))
 		ring_buffer_unlock_commit(buffer, event);
+
+	__this_cpu_dec(user_stack_count);
+
+ out:
+	preempt_enable();
 }
 
 #ifdef UNUSED
diff --git a/lib/debug_locks.c b/lib/debug_locks.c
index 5bf0020b9248..b1c177307677 100644
--- a/lib/debug_locks.c
+++ b/lib/debug_locks.c
@@ -8,7 +8,6 @@
  *
  *  Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
  */
-#include <linux/kernel.h>
 #include <linux/rwsem.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
@@ -39,7 +38,6 @@ int debug_locks_off(void)
 {
 	if (__debug_locks_off()) {
 		if (!debug_locks_silent) {
-			oops_in_progress = 1;
 			console_verbose();
 			return 1;
 		}
diff --git a/net/ceph/Makefile b/net/ceph/Makefile
index aab1cabb8035..5f19415ec9c0 100644
--- a/net/ceph/Makefile
+++ b/net/ceph/Makefile
@@ -1,9 +1,6 @@
 #
 # Makefile for CEPH filesystem.
 #
-
-ifneq ($(KERNELRELEASE),)
-
 obj-$(CONFIG_CEPH_LIB) += libceph.o
 
 libceph-objs := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
@@ -16,22 +13,3 @@ libceph-objs := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
 	ceph_fs.o ceph_strings.o ceph_hash.o \
 	pagevec.o
 
-else
-#Otherwise we were called directly from the command
-# line; invoke the kernel build system.
-
-KERNELDIR ?= /lib/modules/$(shell uname -r)/build
-PWD := $(shell pwd)
-
-default: all
-
-all:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules
-
-modules_install:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules_install
-
-clean:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
-
-endif
diff --git a/net/dccp/input.c b/net/dccp/input.c
index 265985370fa1..e424a09e83f6 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -239,7 +239,8 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
 		dccp_update_gsr(sk, seqno);
 
 		if (dh->dccph_type != DCCP_PKT_SYNC &&
-		    (ackno != DCCP_PKT_WITHOUT_ACK_SEQ))
+		    ackno != DCCP_PKT_WITHOUT_ACK_SEQ &&
+		    after48(ackno, dp->dccps_gar))
 			dp->dccps_gar = ackno;
 	} else {
 		unsigned long now = jiffies;
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index a76b78de679f..6f97268ed85f 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1556,6 +1556,8 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us
 			if (r_len > sizeof(struct linkinfo_dn))
 				r_len = sizeof(struct linkinfo_dn);
 
+			memset(&link, 0, sizeof(link));
+
 			switch(sock->state) {
 				case SS_CONNECTING:
 					link.idn_linkstate = LL_CONNECTING;
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index f8c1ae4b41f0..13992e1d2726 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -31,6 +31,7 @@
 #include <linux/skbuff.h>
 #include <linux/udp.h>
 #include <linux/slab.h>
+#include <linux/vmalloc.h>
 #include <net/sock.h>
 #include <net/inet_common.h>
 #include <linux/stat.h>
@@ -276,12 +277,12 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 #endif
 #ifdef CONFIG_ECONET_AUNUDP
 	struct msghdr udpmsg;
-	struct iovec iov[msg->msg_iovlen+1];
+	struct iovec iov[2];
 	struct aunhdr ah;
 	struct sockaddr_in udpdest;
 	__kernel_size_t size;
-	int i;
 	mm_segment_t oldfs;
+	char *userbuf;
 #endif
 
 	/*
@@ -297,23 +298,14 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 	mutex_lock(&econet_mutex);
 
-	if (saddr == NULL) {
-		struct econet_sock *eo = ec_sk(sk);
-
-		addr.station = eo->station;
-		addr.net     = eo->net;
-		port	     = eo->port;
-		cb	     = eo->cb;
-	} else {
-		if (msg->msg_namelen < sizeof(struct sockaddr_ec)) {
-			mutex_unlock(&econet_mutex);
-			return -EINVAL;
-		}
-		addr.station = saddr->addr.station;
-		addr.net = saddr->addr.net;
-		port = saddr->port;
-		cb = saddr->cb;
-	}
+        if (saddr == NULL || msg->msg_namelen < sizeof(struct sockaddr_ec)) {
+                mutex_unlock(&econet_mutex);
+                return -EINVAL;
+        }
+        addr.station = saddr->addr.station;
+        addr.net = saddr->addr.net;
+        port = saddr->port;
+        cb = saddr->cb;
 
 	/* Look for a device with the right network number. */
 	dev = net2dev_map[addr.net];
@@ -328,17 +320,17 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 		}
 	}
 
-	if (len + 15 > dev->mtu) {
-		mutex_unlock(&econet_mutex);
-		return -EMSGSIZE;
-	}
-
 	if (dev->type == ARPHRD_ECONET) {
 		/* Real hardware Econet.  We're not worthy etc. */
 #ifdef CONFIG_ECONET_NATIVE
 		unsigned short proto = 0;
 		int res;
 
+		if (len + 15 > dev->mtu) {
+			mutex_unlock(&econet_mutex);
+			return -EMSGSIZE;
+		}
+
 		dev_hold(dev);
 
 		skb = sock_alloc_send_skb(sk, len+LL_ALLOCATED_SPACE(dev),
@@ -351,7 +343,6 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 		eb = (struct ec_cb *)&skb->cb;
 
-		/* BUG: saddr may be NULL */
 		eb->cookie = saddr->cookie;
 		eb->sec = *saddr;
 		eb->sent = ec_tx_done;
@@ -415,6 +406,11 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 		return -ENETDOWN;		/* No socket - can't send */
 	}
 
+	if (len > 32768) {
+		err = -E2BIG;
+		goto error;
+	}
+
 	/* Make up a UDP datagram and hand it off to some higher intellect. */
 
 	memset(&udpdest, 0, sizeof(udpdest));
@@ -446,36 +442,26 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 	/* tack our header on the front of the iovec */
 	size = sizeof(struct aunhdr);
-	/*
-	 * XXX: that is b0rken.  We can't mix userland and kernel pointers
-	 * in iovec, since on a lot of platforms copy_from_user() will
-	 * *not* work with the kernel and userland ones at the same time,
-	 * regardless of what we do with set_fs().  And we are talking about
-	 * econet-over-ethernet here, so "it's only ARM anyway" doesn't
-	 * apply.  Any suggestions on fixing that code?		-- AV
-	 */
 	iov[0].iov_base = (void *)&ah;
 	iov[0].iov_len = size;
-	for (i = 0; i < msg->msg_iovlen; i++) {
-		void __user *base = msg->msg_iov[i].iov_base;
-		size_t iov_len = msg->msg_iov[i].iov_len;
-		/* Check it now since we switch to KERNEL_DS later. */
-		if (!access_ok(VERIFY_READ, base, iov_len)) {
-			mutex_unlock(&econet_mutex);
-			return -EFAULT;
-		}
-		iov[i+1].iov_base = base;
-		iov[i+1].iov_len = iov_len;
-		size += iov_len;
+
+	userbuf = vmalloc(len);
+	if (userbuf == NULL) {
+		err = -ENOMEM;
+		goto error;
 	}
 
+	iov[1].iov_base = userbuf;
+	iov[1].iov_len = len;
+	err = memcpy_fromiovec(userbuf, msg->msg_iov, len);
+	if (err)
+		goto error_free_buf;
+
 	/* Get a skbuff (no data, just holds our cb information) */
 	if ((skb = sock_alloc_send_skb(sk, 0,
 				       msg->msg_flags & MSG_DONTWAIT,
-				       &err)) == NULL) {
-		mutex_unlock(&econet_mutex);
-		return err;
-	}
+				       &err)) == NULL)
+		goto error_free_buf;
 
 	eb = (struct ec_cb *)&skb->cb;
 
@@ -491,7 +477,7 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 	udpmsg.msg_name = (void *)&udpdest;
 	udpmsg.msg_namelen = sizeof(udpdest);
 	udpmsg.msg_iov = &iov[0];
-	udpmsg.msg_iovlen = msg->msg_iovlen + 1;
+	udpmsg.msg_iovlen = 2;
 	udpmsg.msg_control = NULL;
 	udpmsg.msg_controllen = 0;
 	udpmsg.msg_flags=0;
@@ -499,9 +485,13 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
 	oldfs = get_fs(); set_fs(KERNEL_DS);	/* More privs :-) */
 	err = sock_sendmsg(udpsock, &udpmsg, size);
 	set_fs(oldfs);
+
+error_free_buf:
+	vfree(userbuf);
 #else
 	err = -EPROTOTYPE;
 #endif
+	error:
 	mutex_unlock(&econet_mutex);
 
 	return err;
@@ -671,6 +661,9 @@ static int ec_dev_ioctl(struct socket *sock, unsigned int cmd, void __user *arg)
 	err = 0;
 	switch (cmd) {
 	case SIOCSIFADDR:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+
 		edev = dev->ec_ptr;
 		if (edev == NULL) {
 			/* Magic up a new one. */
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 1b344f30b463..3c0369a3a663 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -133,8 +133,7 @@ int __inet_inherit_port(struct sock *sk, struct sock *child)
 			}
 		}
 	}
-	sk_add_bind_node(child, &tb->owners);
-	inet_csk(child)->icsk_bind_hash = tb;
+	inet_bind_hash(child, tb, port);
 	spin_unlock(&head->lock);
 
 	return 0;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index e91911d7aae2..1b4ec21497a4 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -26,6 +26,8 @@ static int zero;
 static int tcp_retr1_max = 255;
 static int ip_local_port_range_min[] = { 1, 1 };
 static int ip_local_port_range_max[] = { 65535, 65535 };
+static int tcp_adv_win_scale_min = -31;
+static int tcp_adv_win_scale_max = 31;
 
 /* Update system visible IP port range */
 static void set_local_port_range(int range[2])
@@ -426,7 +428,9 @@ static struct ctl_table ipv4_table[] = {
 		.data		= &sysctl_tcp_adv_win_scale,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= &tcp_adv_win_scale_min,
+		.extra2		= &tcp_adv_win_scale_max,
 	},
 	{
 		.procname	= "tcp_tw_reuse",
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 081419969485..f15c36a706ec 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2246,7 +2246,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
 		/* Values greater than interface MTU won't take effect. However
 		 * at the point when this call is done we typically don't yet
 		 * know which interface is going to be used */
-		if (val < 64 || val > MAX_TCP_WINDOW) {
+		if (val < TCP_MIN_MSS || val > MAX_TCP_WINDOW) {
 			err = -EINVAL;
 			break;
 		}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 69ccbc1dde9c..e13da6de1fc7 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2043,7 +2043,9 @@ get_req:
 	}
 get_sk:
 	sk_nulls_for_each_from(sk, node) {
-		if (sk->sk_family == st->family && net_eq(sock_net(sk), net)) {
+		if (!net_eq(sock_net(sk), net))
+			continue;
+		if (sk->sk_family == st->family) {
 			cur = sk;
 			goto out;
 		}
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 9dab9573be41..92ce94f5146b 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -989,20 +989,26 @@ call_refreshresult(struct rpc_task *task)
 	dprint_status(task);
 
 	task->tk_status = 0;
-	task->tk_action = call_allocate;
-	if (status >= 0 && rpcauth_uptodatecred(task))
-		return;
+	task->tk_action = call_refresh;
 	switch (status) {
-	case -EACCES:
-		rpc_exit(task, -EACCES);
-		return;
-	case -ENOMEM:
-		rpc_exit(task, -ENOMEM);
+	case 0:
+		if (rpcauth_uptodatecred(task))
+			task->tk_action = call_allocate;
 		return;
 	case -ETIMEDOUT:
 		rpc_delay(task, 3*HZ);
+	case -EAGAIN:
+		status = -EACCES;
+		if (!task->tk_cred_retry)
+			break;
+		task->tk_cred_retry--;
+		dprintk("RPC: %5u %s: retry refresh creds\n",
+				task->tk_pid, __func__);
+		return;
 	}
-	task->tk_action = call_refresh;
+	dprintk("RPC: %5u %s: refresh creds failed with error %d\n",
+				task->tk_pid, __func__, status);
+	rpc_exit(task, status);
 }
 
 /*
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 3c95304a0817..2268e6798124 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1343,9 +1343,25 @@ static void unix_destruct_scm(struct sk_buff *skb)
 	sock_wfree(skb);
 }
 
+#define MAX_RECURSION_LEVEL 4
+
 static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
 {
 	int i;
+	unsigned char max_level = 0;
+	int unix_sock_count = 0;
+
+	for (i = scm->fp->count - 1; i >= 0; i--) {
+		struct sock *sk = unix_get_socket(scm->fp->fp[i]);
+
+		if (sk) {
+			unix_sock_count++;
+			max_level = max(max_level,
+					unix_sk(sk)->recursion_level);
+		}
+	}
+	if (unlikely(max_level > MAX_RECURSION_LEVEL))
+		return -ETOOMANYREFS;
 
 	/*
 	 * Need to duplicate file references for the sake of garbage
@@ -1356,9 +1372,11 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
 	if (!UNIXCB(skb).fp)
 		return -ENOMEM;
 
-	for (i = scm->fp->count-1; i >= 0; i--)
-		unix_inflight(scm->fp->fp[i]);
-	return 0;
+	if (unix_sock_count) {
+		for (i = scm->fp->count - 1; i >= 0; i--)
+			unix_inflight(scm->fp->fp[i]);
+	}
+	return max_level;
 }
 
 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)
@@ -1393,6 +1411,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock,
 	struct sk_buff *skb;
 	long timeo;
 	struct scm_cookie tmp_scm;
+	int max_level;
 
 	if (NULL == siocb->scm)
 		siocb->scm = &tmp_scm;
@@ -1431,8 +1450,9 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock,
 		goto out;
 
 	err = unix_scm_to_skb(siocb->scm, skb, true);
-	if (err)
+	if (err < 0)
 		goto out_free;
+	max_level = err + 1;
 	unix_get_secdata(siocb->scm, skb);
 
 	skb_reset_transport_header(skb);
@@ -1514,6 +1534,8 @@ restart:
 	if (sock_flag(other, SOCK_RCVTSTAMP))
 		__net_timestamp(skb);
 	skb_queue_tail(&other->sk_receive_queue, skb);
+	if (max_level > unix_sk(other)->recursion_level)
+		unix_sk(other)->recursion_level = max_level;
 	unix_state_unlock(other);
 	other->sk_data_ready(other, len);
 	sock_put(other);
@@ -1544,6 +1566,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
 	int sent = 0;
 	struct scm_cookie tmp_scm;
 	bool fds_sent = false;
+	int max_level;
 
 	if (NULL == siocb->scm)
 		siocb->scm = &tmp_scm;
@@ -1607,10 +1630,11 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
 
 		/* Only send the fds in the first buffer */
 		err = unix_scm_to_skb(siocb->scm, skb, !fds_sent);
-		if (err) {
+		if (err < 0) {
 			kfree_skb(skb);
 			goto out_err;
 		}
+		max_level = err + 1;
 		fds_sent = true;
 
 		err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
@@ -1626,6 +1650,8 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
 			goto pipe_err_free;
 
 		skb_queue_tail(&other->sk_receive_queue, skb);
+		if (max_level > unix_sk(other)->recursion_level)
+			unix_sk(other)->recursion_level = max_level;
 		unix_state_unlock(other);
 		other->sk_data_ready(other, size);
 		sent += size;
@@ -1845,6 +1871,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
 		unix_state_lock(sk);
 		skb = skb_dequeue(&sk->sk_receive_queue);
 		if (skb == NULL) {
+			unix_sk(sk)->recursion_level = 0;
 			if (copied >= target)
 				goto unlock;
 
diff --git a/net/unix/garbage.c b/net/unix/garbage.c
index c8df6fda0b1f..f89f83bf828e 100644
--- a/net/unix/garbage.c
+++ b/net/unix/garbage.c
@@ -96,7 +96,7 @@ static DECLARE_WAIT_QUEUE_HEAD(unix_gc_wait);
 unsigned int unix_tot_inflight;
 
 
-static struct sock *unix_get_socket(struct file *filp)
+struct sock *unix_get_socket(struct file *filp)
 {
 	struct sock *u_sock = NULL;
 	struct inode *inode = filp->f_path.dentry->d_inode;
@@ -259,9 +259,16 @@ static void inc_inflight_move_tail(struct unix_sock *u)
 }
 
 static bool gc_in_progress = false;
+#define UNIX_INFLIGHT_TRIGGER_GC 16000
 
 void wait_for_unix_gc(void)
 {
+	/*
+	 * If number of inflight sockets is insane,
+	 * force a garbage collect right now.
+	 */
+	if (unix_tot_inflight > UNIX_INFLIGHT_TRIGGER_GC && !gc_in_progress)
+		unix_gc();
 	wait_event(unix_gc_wait, gc_in_progress == false);
 }
 
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 0ac6aed0c889..886d7c72936e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -1614,6 +1614,7 @@ do_sku:
 		spec->init_amp = ALC_INIT_GPIO3;
 		break;
 	case 5:
+	default:
 		spec->init_amp = ALC_INIT_DEFAULT;
 		break;
 	}
@@ -2013,6 +2014,36 @@ static struct hda_verb alc888_acer_aspire_6530g_verbs[] = {
 	{ }
 };
 
+/*
+ *ALC888 Acer Aspire 7730G model
+ */
+
+static struct hda_verb alc888_acer_aspire_7730G_verbs[] = {
+/* Bias voltage on for external mic port */
+	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN | PIN_VREF80},
+/* Front Mic: set to PIN_IN (empty by default) */
+	{0x12, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
+/* Unselect Front Mic by default in input mixer 3 */
+	{0x22, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0xb)},
+/* Enable unsolicited event for HP jack */
+	{0x15, AC_VERB_SET_UNSOLICITED_ENABLE, ALC880_HP_EVENT | AC_USRSP_EN},
+/* Enable speaker output */
+	{0x14, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+	{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x14, AC_VERB_SET_EAPD_BTLENABLE, 2},
+/* Enable headphone output */
+	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | PIN_HP},
+	{0x15, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x15, AC_VERB_SET_CONNECT_SEL, 0x00},
+	{0x15, AC_VERB_SET_EAPD_BTLENABLE, 2},
+/*Enable internal subwoofer */
+	{0x17, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+	{0x17, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x17, AC_VERB_SET_CONNECT_SEL, 0x02},
+	{0x17, AC_VERB_SET_EAPD_BTLENABLE, 2},
+	{ }
+};
+
 /*
  * ALC889 Acer Aspire 8930G model
  */
@@ -2200,6 +2231,16 @@ static void alc888_acer_aspire_6530g_setup(struct hda_codec *codec)
 	spec->autocfg.speaker_pins[2] = 0x17;
 }
 
+static void alc888_acer_aspire_7730g_setup(struct hda_codec *codec)
+{
+	struct alc_spec *spec = codec->spec;
+
+	spec->autocfg.hp_pins[0] = 0x15;
+	spec->autocfg.speaker_pins[0] = 0x14;
+	spec->autocfg.speaker_pins[1] = 0x16;
+	spec->autocfg.speaker_pins[2] = 0x17;
+}
+
 static void alc889_acer_aspire_8930g_setup(struct hda_codec *codec)
 {
 	struct alc_spec *spec = codec->spec;
@@ -9524,13 +9565,6 @@ static struct hda_verb alc883_acer_eapd_verbs[] = {
 	{ }
 };
 
-static struct hda_verb alc888_acer_aspire_7730G_verbs[] = {
-	{0x15, AC_VERB_SET_CONNECT_SEL, 0x00},
-	{0x17, AC_VERB_SET_CONNECT_SEL, 0x02},
-	{0x15, AC_VERB_SET_UNSOLICITED_ENABLE, ALC880_HP_EVENT | AC_USRSP_EN},
-	{ } /* end */
-};
-
 static void alc888_6st_dell_setup(struct hda_codec *codec)
 {
 	struct alc_spec *spec = codec->spec;
@@ -10328,7 +10362,7 @@ static struct alc_config_preset alc882_presets[] = {
 		.const_channel_count = 6,
 		.input_mux = &alc883_capture_source,
 		.unsol_event = alc_automute_amp_unsol_event,
-		.setup = alc888_acer_aspire_6530g_setup,
+		.setup = alc888_acer_aspire_7730g_setup,
 		.init_hook = alc_automute_amp,
 	},
 	[ALC883_MEDION] = {
@@ -16910,7 +16944,7 @@ static struct alc_config_preset alc861vd_presets[] = {
 static int alc861vd_auto_create_input_ctls(struct hda_codec *codec,
 						const struct auto_pin_cfg *cfg)
 {
-	return alc_auto_create_input_ctls(codec, cfg, 0x15, 0x09, 0);
+	return alc_auto_create_input_ctls(codec, cfg, 0x0b, 0x22, 0);
 }
 
 
@@ -18964,6 +18998,8 @@ static inline hda_nid_t alc662_mix_to_dac(hda_nid_t nid)
 		return 0x02;
 	else if (nid >= 0x0c && nid <= 0x0e)
 		return nid - 0x0c + 0x02;
+	else if (nid == 0x26) /* ALC887-VD has this DAC too */
+		return 0x25;
 	else
 		return 0;
 }
@@ -18972,7 +19008,7 @@ static inline hda_nid_t alc662_mix_to_dac(hda_nid_t nid)
 static hda_nid_t alc662_dac_to_mix(struct hda_codec *codec, hda_nid_t pin,
 				   hda_nid_t dac)
 {
-	hda_nid_t mix[4];
+	hda_nid_t mix[5];
 	int i, num;
 
 	num = snd_hda_get_connections(codec, pin, mix, ARRAY_SIZE(mix));
diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
index 293569dfd0ed..e521ada80542 100644
--- a/sound/soc/atmel/sam9g20_wm8731.c
+++ b/sound/soc/atmel/sam9g20_wm8731.c
@@ -222,9 +222,9 @@ static int __init at91sam9g20ek_init(void)
 	}
 
 	pllb = clk_get(NULL, "pllb");
-	if (IS_ERR(mclk)) {
+	if (IS_ERR(pllb)) {
 		printk(KERN_ERR "ASoC: Failed to get PLLB\n");
-		ret = PTR_ERR(mclk);
+		ret = PTR_ERR(pllb);
 		goto err_mclk;
 	}
 	ret = clk_set_parent(mclk, pllb);
@@ -240,6 +240,7 @@ static int __init at91sam9g20ek_init(void)
 	if (!at91sam9g20ek_snd_device) {
 		printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 		ret = -ENOMEM;
+		goto err_mclk;
 	}
 
 	platform_set_drvdata(at91sam9g20ek_snd_device,
@@ -248,11 +249,13 @@ static int __init at91sam9g20ek_init(void)
 	ret = platform_device_add(at91sam9g20ek_snd_device);
 	if (ret) {
 		printk(KERN_ERR "ASoC: Platform device allocation failed\n");
-		platform_device_put(at91sam9g20ek_snd_device);
+		goto err_device_add;
 	}
 
 	return ret;
 
+err_device_add:
+	platform_device_put(at91sam9g20ek_snd_device);
 err_mclk:
 	clk_put(mclk);
 	mclk = NULL;
diff --git a/sound/soc/atmel/snd-soc-afeb9260.c b/sound/soc/atmel/snd-soc-afeb9260.c
index e3d283561c19..86e0f8586dc3 100644
--- a/sound/soc/atmel/snd-soc-afeb9260.c
+++ b/sound/soc/atmel/snd-soc-afeb9260.c
@@ -167,7 +167,6 @@ static int __init afeb9260_soc_init(void)
 
 	return 0;
 err1:
-	platform_device_del(afeb9260_snd_device);
 	platform_device_put(afeb9260_snd_device);
 	return err;
 }
diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c
index 470cb93b1d1f..d63e28773eb1 100644
--- a/sound/soc/codecs/max98088.c
+++ b/sound/soc/codecs/max98088.c
@@ -2019,7 +2019,10 @@ err_access:
 
 static int max98088_remove(struct snd_soc_codec *codec)
 {
+       struct max98088_priv *max98088 = snd_soc_codec_get_drvdata(codec);
+
        max98088_set_bias_level(codec, SND_SOC_BIAS_OFF);
+       kfree(max98088->eq_texts);
 
        return 0;
 }
diff --git a/sound/soc/codecs/stac9766.c b/sound/soc/codecs/stac9766.c
index 00d67cc8e206..061f9e5a497b 100644
--- a/sound/soc/codecs/stac9766.c
+++ b/sound/soc/codecs/stac9766.c
@@ -383,6 +383,7 @@ static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 	.reg_cache_size = sizeof(stac9766_reg),
 	.reg_word_size = sizeof(u16),
 	.reg_cache_step = 2,
+	.reg_cache_default = stac9766_reg,
 };
 
 static __devinit int stac9766_probe(struct platform_device *pdev)
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index fc687790188b..77b8f9ae29be 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -1176,7 +1176,7 @@ EXPORT_SYMBOL_GPL(aic3x_set_gpio);
 int aic3x_get_gpio(struct snd_soc_codec *codec, int gpio)
 {
 	u8 reg = gpio ? AIC3X_GPIO2_REG : AIC3X_GPIO1_REG;
-	u8 val, bit = gpio ? 2: 1;
+	u8 val = 0, bit = gpio ? 2 : 1;
 
 	aic3x_read(codec, reg, &val);
 	return (val >> bit) & 1;
@@ -1204,7 +1204,7 @@ EXPORT_SYMBOL_GPL(aic3x_set_headset_detection);
 
 int aic3x_headset_detected(struct snd_soc_codec *codec)
 {
-	u8 val;
+	u8 val = 0;
 	aic3x_read(codec, AIC3X_HEADSET_DETECT_CTRL_B, &val);
 	return (val >> 4) & 1;
 }
@@ -1212,7 +1212,7 @@ EXPORT_SYMBOL_GPL(aic3x_headset_detected);
 
 int aic3x_button_pressed(struct snd_soc_codec *codec)
 {
-	u8 val;
+	u8 val = 0;
 	aic3x_read(codec, AIC3X_HEADSET_DETECT_CTRL_B, &val);
 	return (val >> 5) & 1;
 }
diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index ee4fb201de60..d2c243095673 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -78,8 +78,10 @@ static int tpa6130a2_i2c_write(int reg, u8 value)
 
 	if (data->power_state) {
 		val = i2c_smbus_write_byte_data(tpa6130a2_client, reg, value);
-		if (val < 0)
+		if (val < 0) {
 			dev_err(&tpa6130a2_client->dev, "Write failed\n");
+			return val;
+		}
 	}
 
 	/* Either powered on or off, we save the context */
diff --git a/sound/soc/codecs/wm8523.c b/sound/soc/codecs/wm8523.c
index 712ef7c76f90..9a433a5396cb 100644
--- a/sound/soc/codecs/wm8523.c
+++ b/sound/soc/codecs/wm8523.c
@@ -146,7 +146,6 @@ static int wm8523_startup(struct snd_pcm_substream *substream,
 		return -EINVAL;
 	}
 
-	return 0;
 	snd_pcm_hw_constraint_list(substream->runtime, 0,
 				   SNDRV_PCM_HW_PARAM_RATE,
 				   &wm8523->rate_constraint);
diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index 33be84e506ea..fca60a0b57b8 100644
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -2498,6 +2498,8 @@ static int wm8904_remove(struct snd_soc_codec *codec)
 
 	wm8904_set_bias_level(codec, SND_SOC_BIAS_OFF);
 	regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
+	kfree(wm8904->retune_mobile_texts);
+	kfree(wm8904->drc_texts);
 
 	return 0;
 }
diff --git a/sound/soc/codecs/wm8961.c b/sound/soc/codecs/wm8961.c
index 4f326f604104..8340485c9851 100644
--- a/sound/soc/codecs/wm8961.c
+++ b/sound/soc/codecs/wm8961.c
@@ -711,7 +711,7 @@ static int wm8961_hw_params(struct snd_pcm_substream *substream,
 	if (fs <= 24000)
 		reg |= WM8961_DACSLOPE;
 	else
-		reg &= WM8961_DACSLOPE;
+		reg &= ~WM8961_DACSLOPE;
 	snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_2, reg);
 
 	return 0;
@@ -736,7 +736,7 @@ static int wm8961_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 		freq /= 2;
 	} else {
 		dev_dbg(codec->dev, "Using MCLK/1 for %dHz MCLK\n", freq);
-		reg &= WM8961_MCLKDIV;
+		reg &= ~WM8961_MCLKDIV;
 	}
 
 	snd_soc_write(codec, WM8961_CLOCKING1, reg);
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 830dfdd66c5f..4d3e6f1ac584 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -4061,6 +4061,8 @@ static int  wm8994_codec_remove(struct snd_soc_codec *codec)
 	wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_DET, wm8994);
 	wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_SHRT, wm8994);
 	wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_DET, wm8994);
+	kfree(wm8994->retune_mobile_texts);
+	kfree(wm8994->drc_texts);
 	kfree(wm8994);
 
 	return 0;
@@ -4073,6 +4075,8 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8994 = {
 	.resume =	wm8994_resume,
 	.read = wm8994_read,
 	.write = wm8994_write,
+	.readable_register = wm8994_readable,
+	.volatile_register = wm8994_volatile,
 	.set_bias_level = wm8994_set_bias_level,
 };
 
diff --git a/sound/soc/davinci/davinci-vcif.c b/sound/soc/davinci/davinci-vcif.c
index fb4cc1edf339..9d2afccc3a2d 100644
--- a/sound/soc/davinci/davinci-vcif.c
+++ b/sound/soc/davinci/davinci-vcif.c
@@ -247,7 +247,10 @@ fail:
 
 static int davinci_vcif_remove(struct platform_device *pdev)
 {
+	struct davinci_vcif_dev *davinci_vcif_dev = dev_get_drvdata(&pdev->dev);
+
 	snd_soc_unregister_dai(&pdev->dev);
+	kfree(davinci_vcif_dev);
 
 	return 0;
 }
diff --git a/sound/soc/ep93xx/simone.c b/sound/soc/ep93xx/simone.c
index 4b0d19913728..286817946c56 100644
--- a/sound/soc/ep93xx/simone.c
+++ b/sound/soc/ep93xx/simone.c
@@ -54,24 +54,26 @@ static int __init simone_init(void)
 
 	ret = platform_device_add(simone_snd_ac97_device);
 	if (ret)
-		goto fail;
+		goto fail1;
 
 	simone_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!simone_snd_device) {
 		ret = -ENOMEM;
-		goto fail;
+		goto fail2;
 	}
 
 	platform_set_drvdata(simone_snd_device, &snd_soc_simone);
 	ret = platform_device_add(simone_snd_device);
-	if (ret) {
-		platform_device_put(simone_snd_device);
-		goto fail;
-	}
+	if (ret)
+		goto fail3;
 
-	return ret;
+	return 0;
 
-fail:
+fail3:
+	platform_device_put(simone_snd_device);
+fail2:
+	platform_device_del(simone_snd_ac97_device);
+fail1:
 	platform_device_put(simone_snd_ac97_device);
 	return ret;
 }
diff --git a/sound/soc/fsl/efika-audio-fabric.c b/sound/soc/fsl/efika-audio-fabric.c
index 53251e6b5bd5..108b5d8bd0e9 100644
--- a/sound/soc/fsl/efika-audio-fabric.c
+++ b/sound/soc/fsl/efika-audio-fabric.c
@@ -76,6 +76,7 @@ static __init int efika_fabric_init(void)
 	rc = platform_device_add(pdev);
 	if (rc) {
 		pr_err("efika_fabric_init: platform_device_add() failed\n");
+		platform_device_put(pdev);
 		return -ENODEV;
 	}
 	return 0;
diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
index dce6b551cd78..f92dca07cd35 100644
--- a/sound/soc/fsl/mpc5200_dma.c
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -9,7 +9,6 @@
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/slab.h>
-#include <linux/of_device.h>
 #include <linux/of_platform.h>
 
 #include <sound/soc.h>
diff --git a/sound/soc/fsl/pcm030-audio-fabric.c b/sound/soc/fsl/pcm030-audio-fabric.c
index 25f27ec1dd6e..ba4d85e317ed 100644
--- a/sound/soc/fsl/pcm030-audio-fabric.c
+++ b/sound/soc/fsl/pcm030-audio-fabric.c
@@ -76,6 +76,7 @@ static __init int pcm030_fabric_init(void)
 	rc = platform_device_add(pdev);
 	if (rc) {
 		pr_err("pcm030_fabric_init: platform_device_add() failed\n");
+		platform_device_put(pdev);
 		return -ENODEV;
 	}
 	return 0;
diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c
index d2d98c75ee8a..390b6ffc2658 100644
--- a/sound/soc/imx/imx-ssi.c
+++ b/sound/soc/imx/imx-ssi.c
@@ -679,8 +679,11 @@ static int imx_ssi_probe(struct platform_device *pdev)
 	}
 
 	ssi->soc_platform_pdev_fiq = platform_device_alloc("imx-fiq-pcm-audio", pdev->id);
-	if (!ssi->soc_platform_pdev_fiq)
+	if (!ssi->soc_platform_pdev_fiq) {
+		ret = -ENOMEM;
 		goto failed_pdev_fiq_alloc;
+	}
+
 	platform_set_drvdata(ssi->soc_platform_pdev_fiq, ssi);
 	ret = platform_device_add(ssi->soc_platform_pdev_fiq);
 	if (ret) {
@@ -689,8 +692,11 @@ static int imx_ssi_probe(struct platform_device *pdev)
 	}
 
 	ssi->soc_platform_pdev = platform_device_alloc("imx-pcm-audio", pdev->id);
-	if (!ssi->soc_platform_pdev)
+	if (!ssi->soc_platform_pdev) {
+		ret = -ENOMEM;
 		goto failed_pdev_alloc;
+	}
+
 	platform_set_drvdata(ssi->soc_platform_pdev, ssi);
 	ret = platform_device_add(ssi->soc_platform_pdev);
 	if (ret) {
@@ -703,6 +709,7 @@ static int imx_ssi_probe(struct platform_device *pdev)
 failed_pdev_add:
 	platform_device_put(ssi->soc_platform_pdev);
 failed_pdev_alloc:
+	platform_device_del(ssi->soc_platform_pdev_fiq);
 failed_pdev_fiq_add:
 	platform_device_put(ssi->soc_platform_pdev_fiq);
 failed_pdev_fiq_alloc:
@@ -726,8 +733,8 @@ static int __devexit imx_ssi_remove(struct platform_device *pdev)
 	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	struct imx_ssi *ssi = platform_get_drvdata(pdev);
 
-	platform_device_del(ssi->soc_platform_pdev);
-	platform_device_put(ssi->soc_platform_pdev);
+	platform_device_unregister(ssi->soc_platform_pdev);
+	platform_device_unregister(ssi->soc_platform_pdev_fiq);
 
 	snd_soc_unregister_dai(&pdev->dev);
 
diff --git a/sound/soc/imx/phycore-ac97.c b/sound/soc/imx/phycore-ac97.c
index 39f23734781a..9eabc28667e6 100644
--- a/sound/soc/imx/phycore-ac97.c
+++ b/sound/soc/imx/phycore-ac97.c
@@ -43,6 +43,7 @@ static struct snd_soc_card imx_phycore = {
 	.num_links	= ARRAY_SIZE(imx_phycore_dai_ac97),
 };
 
+static struct platform_device *imx_phycore_snd_ac97_device;
 static struct platform_device *imx_phycore_snd_device;
 
 static int __init imx_phycore_init(void)
@@ -53,29 +54,42 @@ static int __init imx_phycore_init(void)
 		/* return happy. We might run on a totally different machine */
 		return 0;
 
-	imx_phycore_snd_device = platform_device_alloc("soc-audio", -1);
-	if (!imx_phycore_snd_device)
+	imx_phycore_snd_ac97_device = platform_device_alloc("soc-audio", -1);
+	if (!imx_phycore_snd_ac97_device)
 		return -ENOMEM;
 
-	platform_set_drvdata(imx_phycore_snd_device, &imx_phycore);
-	ret = platform_device_add(imx_phycore_snd_device);
+	platform_set_drvdata(imx_phycore_snd_ac97_device, &imx_phycore);
+	ret = platform_device_add(imx_phycore_snd_ac97_device);
+	if (ret)
+		goto fail1;
 
 	imx_phycore_snd_device = platform_device_alloc("wm9712-codec", -1);
-	if (!imx_phycore_snd_device)
-		return -ENOMEM;
+	if (!imx_phycore_snd_device) {
+		ret = -ENOMEM;
+		goto fail2;
+	}
 	ret = platform_device_add(imx_phycore_snd_device);
 
 	if (ret) {
 		printk(KERN_ERR "ASoC: Platform device allocation failed\n");
-		platform_device_put(imx_phycore_snd_device);
+		goto fail3;
 	}
 
+	return 0;
+
+fail3:
+	platform_device_put(imx_phycore_snd_device);
+fail2:
+	platform_device_del(imx_phycore_snd_ac97_device);
+fail1:
+	platform_device_put(imx_phycore_snd_ac97_device);
 	return ret;
 }
 
 static void __exit imx_phycore_exit(void)
 {
 	platform_device_unregister(imx_phycore_snd_device);
+	platform_device_unregister(imx_phycore_snd_ac97_device);
 }
 
 late_initcall(imx_phycore_init);
diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
index 293dc748797c..e00e39dd6576 100644
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ b/sound/soc/nuc900/nuc900-ac97.c
@@ -384,7 +384,6 @@ out0:
 
 static int __devexit nuc900_ac97_drvremove(struct platform_device *pdev)
 {
-
 	snd_soc_unregister_dai(&pdev->dev);
 
 	clk_put(nuc900_ac97_data->clk);
@@ -392,6 +391,7 @@ static int __devexit nuc900_ac97_drvremove(struct platform_device *pdev)
 	release_mem_region(nuc900_ac97_data->res->start,
 				resource_size(nuc900_ac97_data->res));
 
+	kfree(nuc900_ac97_data);
 	nuc900_ac97_data = NULL;
 
 	return 0;
diff --git a/sound/soc/omap/omap3pandora.c b/sound/soc/omap/omap3pandora.c
index dbd9d96b5f92..4ee33ce2cb98 100644
--- a/sound/soc/omap/omap3pandora.c
+++ b/sound/soc/omap/omap3pandora.c
@@ -306,6 +306,7 @@ static int __init omap3pandora_soc_init(void)
 		pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
 			dev_name(&omap3pandora_snd_device->dev),
 			PTR_ERR(omap3pandora_dac_reg));
+		ret = PTR_ERR(omap3pandora_dac_reg);
 		goto fail3;
 	}
 
diff --git a/sound/soc/omap/osk5912.c b/sound/soc/omap/osk5912.c
index f0e662556428..65ae00e976ef 100644
--- a/sound/soc/omap/osk5912.c
+++ b/sound/soc/omap/osk5912.c
@@ -177,7 +177,8 @@ static int __init osk_soc_init(void)
 	tlv320aic23_mclk = clk_get(dev, "mclk");
 	if (IS_ERR(tlv320aic23_mclk)) {
 		printk(KERN_ERR "Could not get mclk clock\n");
-		return -ENODEV;
+		err = PTR_ERR(tlv320aic23_mclk);
+		goto err2;
 	}
 
 	/*
@@ -188,7 +189,7 @@ static int __init osk_soc_init(void)
 		if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) {
 			printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n");
 			err = -ECANCELED;
-			goto err1;
+			goto err3;
 		}
 	}
 
@@ -196,9 +197,12 @@ static int __init osk_soc_init(void)
 	       (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK);
 
 	return 0;
-err1:
+
+err3:
 	clk_put(tlv320aic23_mclk);
+err2:
 	platform_device_del(osk_snd_device);
+err1:
 	platform_device_put(osk_snd_device);
 
 	return err;
@@ -207,6 +211,7 @@ err1:
 
 static void __exit osk_soc_exit(void)
 {
+	clk_put(tlv320aic23_mclk);
 	platform_device_unregister(osk_snd_device);
 }
 
diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 37f191bbfdd9..580f48571303 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -1,6 +1,7 @@
 config SND_PXA2XX_SOC
 	tristate "SoC Audio for the Intel PXA2xx chip"
 	depends on ARCH_PXA
+	select SND_ARM
 	select SND_PXA2XX_LIB
 	help
 	  Say Y or M if you want to add support for codecs attached to
diff --git a/sound/soc/s3c24xx/smdk_spdif.c b/sound/soc/s3c24xx/smdk_spdif.c
index f31d22ad7c88..c8bd90488a87 100644
--- a/sound/soc/s3c24xx/smdk_spdif.c
+++ b/sound/soc/s3c24xx/smdk_spdif.c
@@ -38,7 +38,7 @@ static int set_audio_clock_heirachy(struct platform_device *pdev)
 	}
 
 	mout_epll = clk_get(NULL, "mout_epll");
-	if (IS_ERR(fout_epll)) {
+	if (IS_ERR(mout_epll)) {
 		printk(KERN_WARNING "%s: Cannot find mout_epll.\n",
 				__func__);
 		ret = -EINVAL;
@@ -54,7 +54,7 @@ static int set_audio_clock_heirachy(struct platform_device *pdev)
 	}
 
 	sclk_spdif = clk_get(NULL, "sclk_spdif");
-	if (IS_ERR(fout_epll)) {
+	if (IS_ERR(sclk_spdif)) {
 		printk(KERN_WARNING "%s: Cannot find sclk_spdif.\n",
 				__func__);
 		ret = -EINVAL;
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 507e709f2807..4c2404b1b862 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -132,6 +132,8 @@ struct fsi_priv {
 	struct fsi_stream playback;
 	struct fsi_stream capture;
 
+	long rate;
+
 	u32 mst_ctrl;
 };
 
@@ -854,10 +856,17 @@ static void fsi_dai_shutdown(struct snd_pcm_substream *substream,
 {
 	struct fsi_priv *fsi = fsi_get_priv(substream);
 	int is_play = fsi_is_play(substream);
+	struct fsi_master *master = fsi_get_master(fsi);
+	int (*set_rate)(struct device *dev, int is_porta, int rate, int enable);
 
 	fsi_irq_disable(fsi, is_play);
 	fsi_clk_ctrl(fsi, 0);
 
+	set_rate = master->info->set_rate;
+	if (set_rate && fsi->rate)
+		set_rate(dai->dev, fsi_is_port_a(fsi), fsi->rate, 0);
+	fsi->rate = 0;
+
 	pm_runtime_put_sync(dai->dev);
 }
 
@@ -891,20 +900,20 @@ static int fsi_dai_hw_params(struct snd_pcm_substream *substream,
 {
 	struct fsi_priv *fsi = fsi_get_priv(substream);
 	struct fsi_master *master = fsi_get_master(fsi);
-	int (*set_rate)(int is_porta, int rate) = master->info->set_rate;
+	int (*set_rate)(struct device *dev, int is_porta, int rate, int enable);
 	int fsi_ver = master->core->ver;
-	int is_play = fsi_is_play(substream);
+	long rate = params_rate(params);
 	int ret;
 
-	/* if slave mode, set_rate is not needed */
-	if (!fsi_is_master_mode(fsi, is_play))
+	set_rate = master->info->set_rate;
+	if (!set_rate)
 		return 0;
 
-	/* it is error if no set_rate */
-	if (!set_rate)
-		return -EIO;
+	ret = set_rate(dai->dev, fsi_is_port_a(fsi), rate, 1);
+	if (ret < 0) /* error */
+		return ret;
 
-	ret = set_rate(fsi_is_port_a(fsi), params_rate(params));
+	fsi->rate = rate;
 	if (ret > 0) {
 		u32 data = 0;
 
diff --git a/sound/soc/sh/ssi.c b/sound/soc/sh/ssi.c
index 40bbdf1591dc..05192d97b377 100644
--- a/sound/soc/sh/ssi.c
+++ b/sound/soc/sh/ssi.c
@@ -387,7 +387,7 @@ static int __devinit sh4_soc_dai_probe(struct platform_device *pdev)
 
 static int __devexit sh4_soc_dai_remove(struct platform_device *pdev)
 {
-	snd_soc_unregister_dai(&pdev->dev, ARRAY_SIZE(sh4_ssi_dai));
+	snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sh4_ssi_dai));
 	return 0;
 }
 
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 93bd2ff001fb..e2c2de201eec 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -697,17 +697,18 @@ static int __cmd_record(int argc, const char **argv)
 	if (err < 0)
 		err = event__synthesize_kernel_mmap(process_synthesized_event,
 						    session, machine, "_stext");
-	if (err < 0) {
-		pr_err("Couldn't record kernel reference relocation symbol.\n");
-		return err;
-	}
+	if (err < 0)
+		pr_err("Couldn't record kernel reference relocation symbol\n"
+		       "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
+		       "Check /proc/kallsyms permission or run as root.\n");
 
 	err = event__synthesize_modules(process_synthesized_event,
 					session, machine);
-	if (err < 0) {
-		pr_err("Couldn't record kernel reference relocation symbol.\n");
-		return err;
-	}
+	if (err < 0)
+		pr_err("Couldn't record kernel module information.\n"
+		       "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
+		       "Check /proc/modules permission or run as root.\n");
+
 	if (perf_guest)
 		perf_session__process_machines(session, event__synthesize_guest_os);
 
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b39f499e575a..0500895a45af 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -295,7 +295,9 @@ static void symbols__insert_by_name(struct rb_root *self, struct symbol *sym)
 {
 	struct rb_node **p = &self->rb_node;
 	struct rb_node *parent = NULL;
-	struct symbol_name_rb_node *symn = ((void *)sym) - sizeof(*parent), *s;
+	struct symbol_name_rb_node *symn, *s;
+
+	symn = container_of(sym, struct symbol_name_rb_node, sym);
 
 	while (*p != NULL) {
 		parent = *p;