daeb4c0c3b
Most PCI implementations use the standard PCI swizzle function, which handles the well defined behaviour of PCI-to-PCI bridges which can be found on cards (eg, four port ethernet cards.) Rather than having almost every platform specify the standard swizzle function, make this the default when no swizzle function is supplied. Therefore, a swizzle function only needs to be provided when there is something exceptional which needs to be handled. This gets rid of the swizzle initializer from 47 files, and leaves us with just two platforms specifying a swizzle function: ARM Integrator and Chalice CATS. Acked-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
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* arch/arch/mach-ixp4xx/gateway7001-pci.c
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*
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* PCI setup routines for Gateway 7001
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*
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* Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
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*
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* based on coyote-pci.c:
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* Copyright (C) 2002 Jungo Software Technologies.
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* Copyright (C) 2003 MontaVista Softwrae, Inc.
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*
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* Maintainer: Imre Kaloz <kaloz@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <asm/mach/pci.h>
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void __init gateway7001_pci_preinit(void)
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{
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irq_set_irq_type(IRQ_IXP4XX_GPIO10, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(IRQ_IXP4XX_GPIO11, IRQ_TYPE_LEVEL_LOW);
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ixp4xx_pci_preinit();
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}
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static int __init gateway7001_map_irq(const struct pci_dev *dev, u8 slot,
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u8 pin)
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{
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if (slot == 1)
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return IRQ_IXP4XX_GPIO11;
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else if (slot == 2)
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return IRQ_IXP4XX_GPIO10;
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else return -1;
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}
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struct hw_pci gateway7001_pci __initdata = {
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.nr_controllers = 1,
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.preinit = gateway7001_pci_preinit,
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.setup = ixp4xx_setup,
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.scan = ixp4xx_scan_bus,
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.map_irq = gateway7001_map_irq,
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};
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int __init gateway7001_pci_init(void)
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{
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if (machine_is_gateway7001())
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pci_common_init(&gateway7001_pci);
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return 0;
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}
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subsys_initcall(gateway7001_pci_init);
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