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i2400m: host/device procotol and core driver definitions

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The wimax/i2400m.h defines the structures and constants for the
host-device protocols:

 - boot / firmware upload protocol

 - general data transport protocol

 - control protocol

It is done in such a way that can also be used verbatim by user space.

drivers/net/wimax/i2400m.h defines all the APIs used by the core,
bus-generic driver (i2400m) and the bus specific drivers
(i2400m-BUSNAME). It also gives a roadmap to the driver
implementation.

debug-levels.h adds the core driver's debug settings.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Inaky Perez-Gonzalez 2008-12-20 16:57:43 -08:00 committed by Greg Kroah-Hartman
parent 3e91029ae0
commit ea24652d25
3 changed files with 1312 additions and 0 deletions
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45
drivers/net/wimax/i2400m/debug-levels.h Normal file
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/*
* Intel Wireless WiMAX Connection 2400m
* Debug levels control file for the i2400m module
*
*
* Copyright (C) 2007-2008 Intel Corporation <linux-wimax@intel.com>
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
*
* 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.
*
* 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __debug_levels__h__
#define __debug_levels__h__
/* Maximum compile and run time debug level for all submodules */
#define D_MODULENAME i2400m
#define D_MASTER CONFIG_WIMAX_I2400M_DEBUG_LEVEL
#include <linux/wimax/debug.h>
/* List of all the enabled modules */
enum d_module {
D_SUBMODULE_DECLARE(control),
D_SUBMODULE_DECLARE(driver),
D_SUBMODULE_DECLARE(debugfs),
D_SUBMODULE_DECLARE(fw),
D_SUBMODULE_DECLARE(netdev),
D_SUBMODULE_DECLARE(rfkill),
D_SUBMODULE_DECLARE(rx),
D_SUBMODULE_DECLARE(tx),
};
#endif /* #ifndef __debug_levels__h__ */

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drivers/net/wimax/i2400m/i2400m.h Normal file
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/*
* Intel Wireless WiMAX Connection 2400m
* Declarations for bus-generic internal APIs
*
*
* Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* Intel Corporation <linux-wimax@intel.com>
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
* Yanir Lubetkin <yanirx.lubetkin@intel.com>
* - Initial implementation
*
*
* GENERAL DRIVER ARCHITECTURE
*
* The i2400m driver is split in the following two major parts:
*
* - bus specific driver
* - bus generic driver (this part)
*
* The bus specific driver sets up stuff specific to the bus the
* device is connected to (USB, SDIO, PCI, tam-tam...non-authoritative
* nor binding list) which is basically the device-model management
* (probe/disconnect, etc), moving data from device to kernel and
* back, doing the power saving details and reseting the device.
*
* For details on each bus-specific driver, see it's include file,
* i2400m-BUSNAME.h
*
* The bus-generic functionality break up is:
*
* - Firmware upload: fw.c - takes care of uploading firmware to the
* device. bus-specific driver just needs to provides a way to
* execute boot-mode commands and to reset the device.
*
* - RX handling: rx.c - receives data from the bus-specific code and
* feeds it to the network or WiMAX stack or uses it to modify
* the driver state. bus-specific driver only has to receive
* frames and pass them to this module.
*
* - TX handling: tx.c - manages the TX FIFO queue and provides means
* for the bus-specific TX code to pull data from the FIFO
* queue. bus-specific code just pulls frames from this module
* to sends them to the device.
*
* - netdev glue: netdev.c - interface with Linux networking
* stack. Pass around data frames, and configure when the
* device is up and running or shutdown (through ifconfig up /
* down). Bus-generic only.
*
* - control ops: control.c - implements various commmands for
* controlling the device. bus-generic only.
*
* - device model glue: driver.c - implements helpers for the
* device-model glue done by the bus-specific layer
* (setup/release the driver resources), turning the device on
* and off, handling the device reboots/resets and a few simple
* WiMAX stack ops.
*
* Code is also broken up in linux-glue / device-glue.
*
* Linux glue contains functions that deal mostly with gluing with the
* rest of the Linux kernel.
*
* Device-glue are functions that deal mostly with the way the device
* does things and talk the device's language.
*
* device-glue code is licensed BSD so other open source OSes can take
* it to implement their drivers.
*
*
* APIs AND HEADER FILES
*
* This bus generic code exports three APIs:
*
* - HDI (host-device interface) definitions common to all busses
* (include/linux/wimax/i2400m.h); these can be also used by user
* space code.
* - internal API for the bus-generic code
* - external API for the bus-specific drivers
*
*
* LIFE CYCLE:
*
* When the bus-specific driver probes, it allocates a network device
* with enough space for it's data structue, that must contain a
* &struct i2400m at the top.
*
* On probe, it needs to fill the i2400m members marked as [fill], as
* well as i2400m->wimax_dev.net_dev and call i2400m_setup(). The
* i2400m driver will only register with the WiMAX and network stacks;
* the only access done to the device is to read the MAC address so we
* can register a network device. This calls i2400m_dev_start() to
* load firmware, setup communication with the device and configure it
* for operation.
*
* At this point, control and data communications are possible.
*
* On disconnect/driver unload, the bus-specific disconnect function
* calls i2400m_release() to undo i2400m_setup(). i2400m_dev_stop()
* shuts the firmware down and releases resources uses to communicate
* with the device.
*
* While the device is up, it might reset. The bus-specific driver has
* to catch that situation and call i2400m_dev_reset_handle() to deal
* with it (reset the internal driver structures and go back to square
* one).
*/
#ifndef __I2400M_H__
#define __I2400M_H__
#include <linux/usb.h>
#include <linux/netdevice.h>
#include <linux/completion.h>
#include <linux/rwsem.h>
#include <asm/atomic.h>
#include <net/wimax.h>
#include <linux/wimax/i2400m.h>
#include <asm/byteorder.h>
/* Misc constants */
enum {
/* Firmware uploading */
I2400M_BOOT_RETRIES = 3,
/* Size of the Boot Mode Command buffer */
I2400M_BM_CMD_BUF_SIZE = 16 * 1024,
I2400M_BM_ACK_BUF_SIZE = 256,
};
/* Firmware version we request when pulling the fw image file */
#define I2400M_FW_VERSION "1.3"
/**
* i2400m_reset_type - methods to reset a device
*
* @I2400M_RT_WARM: Reset without device disconnection, device handles
* are kept valid but state is back to power on, with firmware
* re-uploaded.
* @I2400M_RT_COLD: Tell the device to disconnect itself from the bus
* and reconnect. Renders all device handles invalid.
* @I2400M_RT_BUS: Tells the bus to reset the device; last measure
* used when both types above don't work.
*/
enum i2400m_reset_type {
I2400M_RT_WARM, /* first measure */
I2400M_RT_COLD, /* second measure */
I2400M_RT_BUS, /* call in artillery */
};
struct i2400m_reset_ctx;
/**
* struct i2400m - descriptor for an Intel 2400m
*
* Members marked with [fill] must be filled out/initialized before
* calling i2400m_setup().
*
* @bus_tx_block_size: [fill] SDIO imposes a 256 block size, USB 16,
* so we have a tx_blk_size variable that the bus layer sets to
* tell the engine how much of that we need.
*
* @bus_pl_size_max: [fill] Maximum payload size.
*
* @bus_dev_start: [fill] Function called by the bus-generic code
* [i2400m_dev_start()] to setup the bus-specific communications
* to the the device. See LIFE CYCLE above.
*
* NOTE: Doesn't need to upload the firmware, as that is taken
* care of by the bus-generic code.
*
* @bus_dev_stop: [fill] Function called by the bus-generic code
* [i2400m_dev_stop()] to shutdown the bus-specific communications
* to the the device. See LIFE CYCLE above.
*
* This function does not need to reset the device, just tear down
* all the host resources created to handle communication with
* the device.
*
* @bus_tx_kick: [fill] Function called by the bus-generic code to let
* the bus-specific code know that there is data available in the
* TX FIFO for transmission to the device.
*
* This function cannot sleep.
*
* @bus_reset: [fill] Function called by the bus-generic code to reset
* the device in in various ways. Doesn't need to wait for the
* reset to finish.
*
* If warm or cold reset fail, this function is expected to do a
* bus-specific reset (eg: USB reset) to get the device to a
* working state (even if it implies device disconecction).
*
* Note the warm reset is used by the firmware uploader to
* reinitialize the device.
*
* IMPORTANT: this is called very early in the device setup
* process, so it cannot rely on common infrastructure being laid
* out.
*
* @bus_bm_cmd_send: [fill] Function called to send a boot-mode
* command. Flags are defined in 'enum i2400m_bm_cmd_flags'. This
* is synchronous and has to return 0 if ok or < 0 errno code in
* any error condition.
*
* @bus_bm_wait_for_ack: [fill] Function called to wait for a
* boot-mode notification (that can be a response to a previously
* issued command or an asynchronous one). Will read until all the
* indicated size is read or timeout. Reading more or less data
* than asked for is an error condition. Return 0 if ok, < 0 errno
* code on error.
*
* The caller to this function will check if the response is a
* barker that indicates the device going into reset mode.
*
* @bus_fw_name: [fill] name of the firmware image (in most cases,
* they are all the same for a single release, except that they
* have the type of the bus embedded in the name (eg:
* i2400m-fw-X-VERSION.sbcf, where X is the bus name).
*
* @bus_bm_mac_addr_impaired: [fill] Set to true if the device's MAC
* address provided in boot mode is kind of broken and needs to
* be re-read later on.
*
*
* @wimax_dev: WiMAX generic device for linkage into the kernel WiMAX
* stack. Due to the way a net_device is allocated, we need to
* force this to be the first field so that we can get from
* netdev_priv() the right pointer.
*
* @state: device's state (as reported by it)
*
* @state_wq: waitqueue that is woken up whenever the state changes
*
* @tx_lock: spinlock to protect TX members
*
* @tx_buf: FIFO buffer for TX; we queue data here
*
* @tx_in: FIFO index for incoming data. Note this doesn't wrap around
* and it is always greater than @tx_out.
*
* @tx_out: FIFO index for outgoing data
*
* @tx_msg: current TX message that is active in the FIFO for
* appending payloads.
*
* @tx_sequence: current sequence number for TX messages from the
* device to the host.
*
* @tx_msg_size: size of the current message being transmitted by the
* bus-specific code.
*
* @tx_pl_num: total number of payloads sent
*
* @tx_pl_max: maximum number of payloads sent in a TX message
*
* @tx_pl_min: minimum number of payloads sent in a TX message
*
* @tx_num: number of TX messages sent
*
* @tx_size_acc: number of bytes in all TX messages sent
* (this is different to net_dev's statistics as it also counts
* control messages).
*
* @tx_size_min: smallest TX message sent.
*
* @tx_size_max: biggest TX message sent.
*
* @rx_lock: spinlock to protect RX members
*
* @rx_pl_num: total number of payloads received
*
* @rx_pl_max: maximum number of payloads received in a RX message
*
* @rx_pl_min: minimum number of payloads received in a RX message
*
* @rx_num: number of RX messages received
*
* @rx_size_acc: number of bytes in all RX messages received
* (this is different to net_dev's statistics as it also counts
* control messages).
*
* @rx_size_min: smallest RX message received.
*
* @rx_size_max: buggest RX message received.
*
* @init_mutex: Mutex used for serializing the device bringup
* sequence; this way if the device reboots in the middle, we
* don't try to do a bringup again while we are tearing down the
* one that failed.
*
* Can't reuse @msg_mutex because from within the bringup sequence
* we need to send messages to the device and thus use @msg_mutex.
*
* @msg_mutex: mutex used to send control commands to the device (we
* only allow one at a time, per host-device interface design).
*
* @msg_completion: used to wait for an ack to a control command sent
* to the device.
*
* @ack_skb: used to store the actual ack to a control command if the
* reception of the command was successful. Otherwise, a ERR_PTR()
* errno code that indicates what failed with the ack reception.
*
* Only valid after @msg_completion is woken up. Only updateable
* if @msg_completion is armed. Only touched by
* i2400m_msg_to_dev().
*
* Protected by @rx_lock. In theory the command execution flow is
* sequential, but in case the device sends an out-of-phase or
* very delayed response, we need to avoid it trampling current
* execution.
*
* @bm_cmd_buf: boot mode command buffer for composing firmware upload
* commands.
*
* USB can't r/w to stack, vmalloc, etc...as well, we end up
* having to alloc/free a lot to compose commands, so we use these
* for stagging and not having to realloc all the time.
*
* This assumes the code always runs serialized. Only one thread
* can call i2400m_bm_cmd() at the same time.
*
* @bm_ack_buf: boot mode acknoledge buffer for staging reception of
* responses to commands.
*
* See @bm_cmd_buf.
*
* @work_queue: work queue for processing device reports. This
* workqueue cannot be used for processing TX or RX to the device,
* as from it we'll process device reports, which might require
* further communication with the device.
*
* @debugfs_dentry: hookup for debugfs files.
* These have to be in a separate directory, a child of
* (wimax_dev->debugfs_dentry) so they can be removed when the
* module unloads, as we don't keep each dentry.
*/
struct i2400m {
struct wimax_dev wimax_dev; /* FIRST! See doc */
unsigned updown:1; /* Network device is up or down */
unsigned boot_mode:1; /* is the device in boot mode? */
unsigned sboot:1; /* signed or unsigned fw boot */
unsigned ready:1; /* all probing steps done */
u8 trace_msg_from_user; /* echo rx msgs to 'trace' pipe */
/* typed u8 so debugfs/u8 can tweak */
enum i2400m_system_state state;
wait_queue_head_t state_wq; /* Woken up when on state updates */
size_t bus_tx_block_size;
size_t bus_pl_size_max;
int (*bus_dev_start)(struct i2400m *);
void (*bus_dev_stop)(struct i2400m *);
void (*bus_tx_kick)(struct i2400m *);
int (*bus_reset)(struct i2400m *, enum i2400m_reset_type);
ssize_t (*bus_bm_cmd_send)(struct i2400m *,
const struct i2400m_bootrom_header *,
size_t, int flags);
ssize_t (*bus_bm_wait_for_ack)(struct i2400m *,
struct i2400m_bootrom_header *, size_t);
const char *bus_fw_name;
unsigned bus_bm_mac_addr_impaired:1;
spinlock_t tx_lock; /* protect TX state */
void *tx_buf;
size_t tx_in, tx_out;
struct i2400m_msg_hdr *tx_msg;
size_t tx_sequence, tx_msg_size;
/* TX stats */
unsigned tx_pl_num, tx_pl_max, tx_pl_min,
tx_num, tx_size_acc, tx_size_min, tx_size_max;
/* RX stats */
spinlock_t rx_lock; /* protect RX state */
unsigned rx_pl_num, rx_pl_max, rx_pl_min,
rx_num, rx_size_acc, rx_size_min, rx_size_max;
struct mutex msg_mutex; /* serialize command execution */
struct completion msg_completion;
struct sk_buff *ack_skb; /* protected by rx_lock */
void *bm_ack_buf; /* for receiving acks over USB */
void *bm_cmd_buf; /* for issuing commands over USB */
struct workqueue_struct *work_queue;
struct mutex init_mutex; /* protect bringup seq */
struct i2400m_reset_ctx *reset_ctx; /* protected by init_mutex */
struct work_struct wake_tx_ws;
struct sk_buff *wake_tx_skb;
struct dentry *debugfs_dentry;
};
/*
* Initialize a 'struct i2400m' from all zeroes
*
* This is a bus-generic API call.
*/
static inline
void i2400m_init(struct i2400m *i2400m)
{
wimax_dev_init(&i2400m->wimax_dev);
i2400m->boot_mode = 1;
init_waitqueue_head(&i2400m->state_wq);
spin_lock_init(&i2400m->tx_lock);
i2400m->tx_pl_min = UINT_MAX;
i2400m->tx_size_min = UINT_MAX;
spin_lock_init(&i2400m->rx_lock);
i2400m->rx_pl_min = UINT_MAX;
i2400m->rx_size_min = UINT_MAX;
mutex_init(&i2400m->msg_mutex);
init_completion(&i2400m->msg_completion);
mutex_init(&i2400m->init_mutex);
/* wake_tx_ws is initialized in i2400m_tx_setup() */
}
/*
* Bus-generic internal APIs
* -------------------------
*/
static inline
struct i2400m *wimax_dev_to_i2400m(struct wimax_dev *wimax_dev)
{
return container_of(wimax_dev, struct i2400m, wimax_dev);
}
static inline
struct i2400m *net_dev_to_i2400m(struct net_device *net_dev)
{
return wimax_dev_to_i2400m(netdev_priv(net_dev));
}
/*
* Boot mode support
*/
/**
* i2400m_bm_cmd_flags - flags to i2400m_bm_cmd()
*
* @I2400M_BM_CMD_RAW: send the command block as-is, without doing any
* extra processing for adding CRC.
*/
enum i2400m_bm_cmd_flags {
I2400M_BM_CMD_RAW = 1 << 2,
};
/**
* i2400m_bri - Boot-ROM indicators
*
* Flags for i2400m_bootrom_init() and i2400m_dev_bootstrap() [which
* are passed from things like i2400m_setup()]. Can be combined with
* |.
*
* @I2400M_BRI_SOFT: The device rebooted already and a reboot
* barker received, proceed directly to ack the boot sequence.
* @I2400M_BRI_NO_REBOOT: Do not reboot the device and proceed
* directly to wait for a reboot barker from the device.
* @I2400M_BRI_MAC_REINIT: We need to reinitialize the boot
* rom after reading the MAC adress. This is quite a dirty hack,
* if you ask me -- the device requires the bootrom to be
* intialized after reading the MAC address.
*/
enum i2400m_bri {
I2400M_BRI_SOFT = 1 << 1,
I2400M_BRI_NO_REBOOT = 1 << 2,
I2400M_BRI_MAC_REINIT = 1 << 3,
};
extern void i2400m_bm_cmd_prepare(struct i2400m_bootrom_header *);
extern int i2400m_dev_bootstrap(struct i2400m *, enum i2400m_bri);
extern int i2400m_read_mac_addr(struct i2400m *);
extern int i2400m_bootrom_init(struct i2400m *, enum i2400m_bri);
/* Make/grok boot-rom header commands */
static inline
__le32 i2400m_brh_command(enum i2400m_brh_opcode opcode, unsigned use_checksum,
unsigned direct_access)
{
return cpu_to_le32(
I2400M_BRH_SIGNATURE
| (direct_access ? I2400M_BRH_DIRECT_ACCESS : 0)
| I2400M_BRH_RESPONSE_REQUIRED /* response always required */
| (use_checksum ? I2400M_BRH_USE_CHECKSUM : 0)
| (opcode & I2400M_BRH_OPCODE_MASK));
}
static inline
void i2400m_brh_set_opcode(struct i2400m_bootrom_header *hdr,
enum i2400m_brh_opcode opcode)
{
hdr->command = cpu_to_le32(
(le32_to_cpu(hdr->command) & ~I2400M_BRH_OPCODE_MASK)
| (opcode & I2400M_BRH_OPCODE_MASK));
}
static inline
unsigned i2400m_brh_get_opcode(const struct i2400m_bootrom_header *hdr)
{
return le32_to_cpu(hdr->command) & I2400M_BRH_OPCODE_MASK;
}
static inline
unsigned i2400m_brh_get_response(const struct i2400m_bootrom_header *hdr)
{
return (le32_to_cpu(hdr->command) & I2400M_BRH_RESPONSE_MASK)
>> I2400M_BRH_RESPONSE_SHIFT;
}
static inline
unsigned i2400m_brh_get_use_checksum(const struct i2400m_bootrom_header *hdr)
{
return le32_to_cpu(hdr->command) & I2400M_BRH_USE_CHECKSUM;
}
static inline
unsigned i2400m_brh_get_response_required(
const struct i2400m_bootrom_header *hdr)
{
return le32_to_cpu(hdr->command) & I2400M_BRH_RESPONSE_REQUIRED;
}
static inline
unsigned i2400m_brh_get_direct_access(const struct i2400m_bootrom_header *hdr)
{
return le32_to_cpu(hdr->command) & I2400M_BRH_DIRECT_ACCESS;
}
static inline
unsigned i2400m_brh_get_signature(const struct i2400m_bootrom_header *hdr)
{
return (le32_to_cpu(hdr->command) & I2400M_BRH_SIGNATURE_MASK)
>> I2400M_BRH_SIGNATURE_SHIFT;
}
/*
* Driver / device setup and internal functions
*/
extern void i2400m_netdev_setup(struct net_device *net_dev);
extern int i2400m_tx_setup(struct i2400m *);
extern void i2400m_wake_tx_work(struct work_struct *);
extern void i2400m_tx_release(struct i2400m *);
extern void i2400m_net_rx(struct i2400m *, struct sk_buff *, unsigned,
const void *, int);
enum i2400m_pt;
extern int i2400m_tx(struct i2400m *, const void *, size_t, enum i2400m_pt);
#ifdef CONFIG_DEBUG_FS
extern int i2400m_debugfs_add(struct i2400m *);
extern void i2400m_debugfs_rm(struct i2400m *);
#else
static inline int i2400m_debugfs_add(struct i2400m *i2400m)
{
return 0;
}
static inline void i2400m_debugfs_rm(struct i2400m *i2400m) {}
#endif
/* Called by _dev_start()/_dev_stop() to initialize the device itself */
extern int i2400m_dev_initialize(struct i2400m *);
extern void i2400m_dev_shutdown(struct i2400m *);
extern struct attribute_group i2400m_dev_attr_group;
extern int i2400m_schedule_work(struct i2400m *,
void (*)(struct work_struct *), gfp_t);
/* HDI message's payload description handling */
static inline
size_t i2400m_pld_size(const struct i2400m_pld *pld)
{
return I2400M_PLD_SIZE_MASK & le32_to_cpu(pld->val);
}
static inline
enum i2400m_pt i2400m_pld_type(const struct i2400m_pld *pld)
{
return (I2400M_PLD_TYPE_MASK & le32_to_cpu(pld->val))
>> I2400M_PLD_TYPE_SHIFT;
}
static inline
void i2400m_pld_set(struct i2400m_pld *pld, size_t size,
enum i2400m_pt type)
{
pld->val = cpu_to_le32(
((type << I2400M_PLD_TYPE_SHIFT) & I2400M_PLD_TYPE_MASK)
| (size & I2400M_PLD_SIZE_MASK));
}
/*
* API for the bus-specific drivers
* --------------------------------
*/
static inline
struct i2400m *i2400m_get(struct i2400m *i2400m)
{
dev_hold(i2400m->wimax_dev.net_dev);
return i2400m;
}
static inline
void i2400m_put(struct i2400m *i2400m)
{
dev_put(i2400m->wimax_dev.net_dev);
}
extern int i2400m_dev_reset_handle(struct i2400m *);
/*
* _setup()/_release() are called by the probe/disconnect functions of
* the bus-specific drivers.
*/
extern int i2400m_setup(struct i2400m *, enum i2400m_bri bm_flags);
extern void i2400m_release(struct i2400m *);
extern int i2400m_rx(struct i2400m *, struct sk_buff *);
extern struct i2400m_msg_hdr *i2400m_tx_msg_get(struct i2400m *, size_t *);
extern void i2400m_tx_msg_sent(struct i2400m *);
static const __le32 i2400m_NBOOT_BARKER[4] = {
__constant_cpu_to_le32(I2400M_NBOOT_BARKER),
__constant_cpu_to_le32(I2400M_NBOOT_BARKER),
__constant_cpu_to_le32(I2400M_NBOOT_BARKER),
__constant_cpu_to_le32(I2400M_NBOOT_BARKER)
};
static const __le32 i2400m_SBOOT_BARKER[4] = {
__constant_cpu_to_le32(I2400M_SBOOT_BARKER),
__constant_cpu_to_le32(I2400M_SBOOT_BARKER),
__constant_cpu_to_le32(I2400M_SBOOT_BARKER),
__constant_cpu_to_le32(I2400M_SBOOT_BARKER)
};
/*
* Utility functions
*/
static inline
struct device *i2400m_dev(struct i2400m *i2400m)
{
return i2400m->wimax_dev.net_dev->dev.parent;
}
/*
* Helper for scheduling simple work functions
*
* This struct can get any kind of payload attached (normally in the
* form of a struct where you pack the stuff you want to pass to the
* _work function).
*/
struct i2400m_work {
struct work_struct ws;
struct i2400m *i2400m;
u8 pl[0];
};
extern int i2400m_queue_work(struct i2400m *,
void (*)(struct work_struct *), gfp_t,
const void *, size_t);
extern int i2400m_msg_check_status(const struct i2400m_l3l4_hdr *,
char *, size_t);
extern int i2400m_msg_size_check(struct i2400m *,
const struct i2400m_l3l4_hdr *, size_t);
extern struct sk_buff *i2400m_msg_to_dev(struct i2400m *, const void *, size_t);
extern void i2400m_msg_to_dev_cancel_wait(struct i2400m *, int);
extern void i2400m_msg_ack_hook(struct i2400m *,
const struct i2400m_l3l4_hdr *, size_t);
extern void i2400m_report_hook(struct i2400m *,
const struct i2400m_l3l4_hdr *, size_t);
extern int i2400m_cmd_enter_powersave(struct i2400m *);
extern int i2400m_cmd_get_state(struct i2400m *);
extern int i2400m_cmd_exit_idle(struct i2400m *);
extern struct sk_buff *i2400m_get_device_info(struct i2400m *);
extern int i2400m_firmware_check(struct i2400m *);
extern int i2400m_set_init_config(struct i2400m *,
const struct i2400m_tlv_hdr **, size_t);
static inline
struct usb_endpoint_descriptor *usb_get_epd(struct usb_interface *iface, int ep)
{
return &iface->cur_altsetting->endpoint[ep].desc;
}
extern int i2400m_op_rfkill_sw_toggle(struct wimax_dev *,
enum wimax_rf_state);
extern void i2400m_report_tlv_rf_switches_status(
struct i2400m *, const struct i2400m_tlv_rf_switches_status *);
/*
* Do a millisecond-sleep for allowing wireshark to dump all the data
* packets. Used only for debugging.
*/
static inline
void __i2400m_msleep(unsigned ms)
{
#if 1
#else
msleep(ms);
#endif
}
/* Module parameters */
extern int i2400m_idle_mode_disabled;
#endif /* #ifndef __I2400M_H__ */

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include/linux/wimax/i2400m.h Normal file
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/*
* Intel Wireless WiMax Connection 2400m
* Host-Device protocol interface definitions
*
*
* Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* Intel Corporation <linux-wimax@intel.com>
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
* - Initial implementation
*
*
* This header defines the data structures and constants used to
* communicate with the device.
*
* BOOTMODE/BOOTROM/FIRMWARE UPLOAD PROTOCOL
*
* The firmware upload protocol is quite simple and only requires a
* handful of commands. See drivers/net/wimax/i2400m/fw.c for more
* details.
*
* The BCF data structure is for the firmware file header.
*
*
* THE DATA / CONTROL PROTOCOL
*
* This is the normal protocol spoken with the device once the
* firmware is uploaded. It transports data payloads and control
* messages back and forth.
*
* It consists 'messages' that pack one or more payloads each. The
* format is described in detail in drivers/net/wimax/i2400m/rx.c and
* tx.c.
*
*
* THE L3L4 PROTOCOL
*
* The term L3L4 refers to Layer 3 (the device), Layer 4 (the
* driver/host software).
*
* This is the control protocol used by the host to control the i2400m
* device (scan, connect, disconnect...). This is sent to / received
* as control frames. These frames consist of a header and zero or
* more TLVs with information. We call each control frame a "message".
*
* Each message is composed of:
*
* HEADER
* [TLV0 + PAYLOAD0]
* [TLV1 + PAYLOAD1]
* [...]
* [TLVN + PAYLOADN]
*
* The HEADER is defined by 'struct i2400m_l3l4_hdr'. The payloads are
* defined by a TLV structure (Type Length Value) which is a 'header'
* (struct i2400m_tlv_hdr) and then the payload.
*
* All integers are represented as Little Endian.
*
* - REQUESTS AND EVENTS
*
* The requests can be clasified as follows:
*
* COMMAND: implies a request from the host to the device requesting
* an action being performed. The device will reply with a
* message (with the same type as the command), status and
* no (TLV) payload. Execution of a command might cause
* events (of different type) to be sent later on as
* device's state changes.
*
* GET/SET: similar to COMMAND, but will not cause other
* EVENTs. The reply, in the case of GET, will contain
* TLVs with the requested information.
*
* EVENT: asynchronous messages sent from the device, maybe as a
* consequence of previous COMMANDs but disassociated from
* them.
*
* Only one request might be pending at the same time (ie: don't
* parallelize nor post another GET request before the previous
* COMMAND has been acknowledged with it's corresponding reply by the
* device).
*
* The different requests and their formats are described below:
*
* I2400M_MT_* Message types
* I2400M_MS_* Message status (for replies, events)
* i2400m_tlv_* TLVs
*
* data types are named 'struct i2400m_msg_OPNAME', OPNAME matching the
* operation.
*/
#ifndef __LINUX__WIMAX__I2400M_H__
#define __LINUX__WIMAX__I2400M_H__
#include <linux/types.h>
/*
* Host Device Interface (HDI) common to all busses
*/
/* Boot-mode (firmware upload mode) commands */
/* Header for the firmware file */
struct i2400m_bcf_hdr {
__le32 module_type;
__le32 header_len;
__le32 header_version;
__le32 module_id;
__le32 module_vendor;
__le32 date; /* BCD YYYMMDD */
__le32 size;
__le32 key_size; /* in dwords */
__le32 modulus_size; /* in dwords */
__le32 exponent_size; /* in dwords */
__u8 reserved[88];
} __attribute__ ((packed));
/* Boot mode opcodes */
enum i2400m_brh_opcode {
I2400M_BRH_READ = 1,
I2400M_BRH_WRITE = 2,
I2400M_BRH_JUMP = 3,
I2400M_BRH_SIGNED_JUMP = 8,
I2400M_BRH_HASH_PAYLOAD_ONLY = 9,
};
/* Boot mode command masks and stuff */
enum i2400m_brh {
I2400M_BRH_SIGNATURE = 0xcbbc0000,
I2400M_BRH_SIGNATURE_MASK = 0xffff0000,
I2400M_BRH_SIGNATURE_SHIFT = 16,
I2400M_BRH_OPCODE_MASK = 0x0000000f,
I2400M_BRH_RESPONSE_MASK = 0x000000f0,
I2400M_BRH_RESPONSE_SHIFT = 4,
I2400M_BRH_DIRECT_ACCESS = 0x00000400,
I2400M_BRH_RESPONSE_REQUIRED = 0x00000200,
I2400M_BRH_USE_CHECKSUM = 0x00000100,
};
/* Constants for bcf->module_id */
enum i2400m_bcf_mod_id {
/* Firmware file carries its own pokes -- pokes are a set of
* magical values that have to be written in certain memory
* addresses to get the device up and ready for firmware
* download when it is in non-signed boot mode. */
I2400M_BCF_MOD_ID_POKES = 0x000000001,
};
/**
* i2400m_bootrom_header - Header for a boot-mode command
*
* @cmd: the above command descriptor
* @target_addr: where on the device memory should the action be performed.
* @data_size: for read/write, amount of data to be read/written
* @block_checksum: checksum value (if applicable)
* @payload: the beginning of data attached to this header
*/
struct i2400m_bootrom_header {
__le32 command; /* Compose with enum i2400_brh */
__le32 target_addr;
__le32 data_size;
__le32 block_checksum;
char payload[0];
} __attribute__ ((packed));
/*
* Data / control protocol
*/
/* Packet types for the host-device interface */
enum i2400m_pt {
I2400M_PT_DATA = 0,
I2400M_PT_CTRL,
I2400M_PT_TRACE, /* For device debug */
I2400M_PT_RESET_WARM, /* device reset */
I2400M_PT_RESET_COLD, /* USB[transport] reset, like reconnect */
I2400M_PT_ILLEGAL
};
/*
* Payload for a data packet
*
* This is prefixed to each and every outgoing DATA type.
*/
struct i2400m_pl_data_hdr {
__le32 reserved;
} __attribute__((packed));
/* Misc constants */
enum {
I2400M_PL_PAD = 16, /* Payload data size alignment */
I2400M_PL_SIZE_MAX = 0x3EFF,
I2400M_MAX_PLS_IN_MSG = 60,
/* protocol barkers: sync sequences; for notifications they
* are sent in groups of four. */
I2400M_H2D_PREVIEW_BARKER = 0xcafe900d,
I2400M_COLD_RESET_BARKER = 0xc01dc01d,
I2400M_WARM_RESET_BARKER = 0x50f750f7,
I2400M_NBOOT_BARKER = 0xdeadbeef,
I2400M_SBOOT_BARKER = 0x0ff1c1a1,
I2400M_ACK_BARKER = 0xfeedbabe,
I2400M_D2H_MSG_BARKER = 0xbeefbabe,
};
/*
* Hardware payload descriptor
*
* Bitfields encoded in a struct to enforce typing semantics.
*
* Look in rx.c and tx.c for a full description of the format.
*/
struct i2400m_pld {
__le32 val;
} __attribute__ ((packed));
#define I2400M_PLD_SIZE_MASK 0x00003fff
#define I2400M_PLD_TYPE_SHIFT 16
#define I2400M_PLD_TYPE_MASK 0x000f0000
/*
* Header for a TX message or RX message
*
* @barker: preamble
* @size: used for management of the FIFO queue buffer; before
* sending, this is converted to be a real preamble. This
* indicates the real size of the TX message that starts at this
* point. If the highest bit is set, then this message is to be
* skipped.
* @sequence: sequence number of this message
* @offset: offset where the message itself starts -- see the comments
* in the file header about message header and payload descriptor
* alignment.
* @num_pls: number of payloads in this message
* @padding: amount of padding bytes at the end of the message to make
* it be of block-size aligned
*
* Look in rx.c and tx.c for a full description of the format.
*/
struct i2400m_msg_hdr {
union {
__le32 barker;
__u32 size; /* same size type as barker!! */
};
union {
__le32 sequence;
__u32 offset; /* same size type as barker!! */
};
__le16 num_pls;
__le16 rsv1;
__le16 padding;
__le16 rsv2;
struct i2400m_pld pld[0];
} __attribute__ ((packed));
/*
* L3/L4 control protocol
*/
enum {
/* Interface version */
I2400M_L3L4_VERSION = 0x0100,
};
/* Message types */
enum i2400m_mt {
I2400M_MT_RESERVED = 0x0000,
I2400M_MT_INVALID = 0xffff,
I2400M_MT_REPORT_MASK = 0x8000,
I2400M_MT_GET_SCAN_RESULT = 0x4202,
I2400M_MT_SET_SCAN_PARAM = 0x4402,
I2400M_MT_CMD_RF_CONTROL = 0x4602,
I2400M_MT_CMD_SCAN = 0x4603,
I2400M_MT_CMD_CONNECT = 0x4604,
I2400M_MT_CMD_DISCONNECT = 0x4605,
I2400M_MT_CMD_EXIT_IDLE = 0x4606,
I2400M_MT_GET_LM_VERSION = 0x5201,
I2400M_MT_GET_DEVICE_INFO = 0x5202,
I2400M_MT_GET_LINK_STATUS = 0x5203,
I2400M_MT_GET_STATISTICS = 0x5204,
I2400M_MT_GET_STATE = 0x5205,
I2400M_MT_GET_MEDIA_STATUS = 0x5206,
I2400M_MT_SET_INIT_CONFIG = 0x5404,
I2400M_MT_CMD_INIT = 0x5601,
I2400M_MT_CMD_TERMINATE = 0x5602,
I2400M_MT_CMD_MODE_OF_OP = 0x5603,
I2400M_MT_CMD_RESET_DEVICE = 0x5604,
I2400M_MT_CMD_MONITOR_CONTROL = 0x5605,
I2400M_MT_CMD_ENTER_POWERSAVE = 0x5606,
I2400M_MT_GET_TLS_OPERATION_RESULT = 0x6201,
I2400M_MT_SET_EAP_SUCCESS = 0x6402,
I2400M_MT_SET_EAP_FAIL = 0x6403,
I2400M_MT_SET_EAP_KEY = 0x6404,
I2400M_MT_CMD_SEND_EAP_RESPONSE = 0x6602,
I2400M_MT_REPORT_SCAN_RESULT = 0xc002,
I2400M_MT_REPORT_STATE = 0xd002,
I2400M_MT_REPORT_POWERSAVE_READY = 0xd005,
I2400M_MT_REPORT_EAP_REQUEST = 0xe002,
I2400M_MT_REPORT_EAP_RESTART = 0xe003,
I2400M_MT_REPORT_ALT_ACCEPT = 0xe004,
I2400M_MT_REPORT_KEY_REQUEST = 0xe005,
};
/*
* Message Ack Status codes
*
* When a message is replied-to, this status is reported.
*/
enum i2400m_ms {
I2400M_MS_DONE_OK = 0,
I2400M_MS_DONE_IN_PROGRESS = 1,
I2400M_MS_INVALID_OP = 2,
I2400M_MS_BAD_STATE = 3,
I2400M_MS_ILLEGAL_VALUE = 4,
I2400M_MS_MISSING_PARAMS = 5,
I2400M_MS_VERSION_ERROR = 6,
I2400M_MS_ACCESSIBILITY_ERROR = 7,
I2400M_MS_BUSY = 8,
I2400M_MS_CORRUPTED_TLV = 9,
I2400M_MS_UNINITIALIZED = 10,
I2400M_MS_UNKNOWN_ERROR = 11,
I2400M_MS_PRODUCTION_ERROR = 12,
I2400M_MS_NO_RF = 13,
I2400M_MS_NOT_READY_FOR_POWERSAVE = 14,
I2400M_MS_THERMAL_CRITICAL = 15,
I2400M_MS_MAX
};
/**
* i2400m_tlv - enumeration of the different types of TLVs
*
* TLVs stand for type-length-value and are the header for a payload
* composed of almost anything. Each payload has a type assigned
* and a length.
*/
enum i2400m_tlv {
I2400M_TLV_L4_MESSAGE_VERSIONS = 129,
I2400M_TLV_SYSTEM_STATE = 141,
I2400M_TLV_MEDIA_STATUS = 161,
I2400M_TLV_RF_OPERATION = 162,
I2400M_TLV_RF_STATUS = 163,
I2400M_TLV_DEVICE_RESET_TYPE = 132,
I2400M_TLV_CONFIG_IDLE_PARAMETERS = 601,
};
struct i2400m_tlv_hdr {
__le16 type;
__le16 length; /* payload's */
__u8 pl[0];
} __attribute__((packed));
struct i2400m_l3l4_hdr {
__le16 type;
__le16 length; /* payload's */
__le16 version;
__le16 resv1;
__le16 status;
__le16 resv2;
struct i2400m_tlv_hdr pl[0];
} __attribute__((packed));
/**
* i2400m_system_state - different states of the device
*/
enum i2400m_system_state {
I2400M_SS_UNINITIALIZED = 1,
I2400M_SS_INIT,
I2400M_SS_READY,
I2400M_SS_SCAN,
I2400M_SS_STANDBY,
I2400M_SS_CONNECTING,
I2400M_SS_WIMAX_CONNECTED,
I2400M_SS_DATA_PATH_CONNECTED,
I2400M_SS_IDLE,
I2400M_SS_DISCONNECTING,
I2400M_SS_OUT_OF_ZONE,
I2400M_SS_SLEEPACTIVE,
I2400M_SS_PRODUCTION,
I2400M_SS_CONFIG,
I2400M_SS_RF_OFF,
I2400M_SS_RF_SHUTDOWN,
I2400M_SS_DEVICE_DISCONNECT,
I2400M_SS_MAX,
};
/**
* i2400m_tlv_system_state - report on the state of the system
*
* @state: see enum i2400m_system_state
*/
struct i2400m_tlv_system_state {
struct i2400m_tlv_hdr hdr;
__le32 state;
} __attribute__((packed));
struct i2400m_tlv_l4_message_versions {
struct i2400m_tlv_hdr hdr;
__le16 major;
__le16 minor;
__le16 branch;
__le16 reserved;
} __attribute__((packed));
struct i2400m_tlv_detailed_device_info {
struct i2400m_tlv_hdr hdr;
__u8 reserved1[400];
__u8 mac_address[6];
__u8 reserved2[2];
} __attribute__((packed));
enum i2400m_rf_switch_status {
I2400M_RF_SWITCH_ON = 1,
I2400M_RF_SWITCH_OFF = 2,
};
struct i2400m_tlv_rf_switches_status {
struct i2400m_tlv_hdr hdr;
__u8 sw_rf_switch; /* 1 ON, 2 OFF */
__u8 hw_rf_switch; /* 1 ON, 2 OFF */
__u8 reserved[2];
} __attribute__((packed));
enum {
i2400m_rf_operation_on = 1,
i2400m_rf_operation_off = 2
};
struct i2400m_tlv_rf_operation {
struct i2400m_tlv_hdr hdr;
__le32 status; /* 1 ON, 2 OFF */
} __attribute__((packed));
enum i2400m_tlv_reset_type {
I2400M_RESET_TYPE_COLD = 1,
I2400M_RESET_TYPE_WARM
};
struct i2400m_tlv_device_reset_type {
struct i2400m_tlv_hdr hdr;
__le32 reset_type;
} __attribute__((packed));
struct i2400m_tlv_config_idle_parameters {
struct i2400m_tlv_hdr hdr;
__le32 idle_timeout; /* 100 to 300000 ms [5min], 100 increments
* 0 disabled */
__le32 idle_paging_interval; /* frames */
} __attribute__((packed));
enum i2400m_media_status {
I2400M_MEDIA_STATUS_LINK_UP = 1,
I2400M_MEDIA_STATUS_LINK_DOWN,
I2400M_MEDIA_STATUS_LINK_RENEW,
};
struct i2400m_tlv_media_status {
struct i2400m_tlv_hdr hdr;
__le32 media_status;
} __attribute__((packed));
#endif /* #ifndef __LINUX__WIMAX__I2400M_H__ */