![Ivo van Doorn](/assets/img/avatar_default.png)
Add a new command to the queue handlers: "flush", this moves the flush() callback from mac80211 into rt2x00queue and adds support for flushing the RX queue as well. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
430 lines
14 KiB
C
430 lines
14 KiB
C
/*
|
|
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
|
|
<http://rt2x00.serialmonkey.com>
|
|
|
|
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; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
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.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
Module: rt2x00usb
|
|
Abstract: Data structures for the rt2x00usb module.
|
|
*/
|
|
|
|
#ifndef RT2X00USB_H
|
|
#define RT2X00USB_H
|
|
|
|
#include <linux/usb.h>
|
|
|
|
#define to_usb_device_intf(d) \
|
|
({ \
|
|
struct usb_interface *intf = to_usb_interface(d); \
|
|
interface_to_usbdev(intf); \
|
|
})
|
|
|
|
/*
|
|
* This variable should be used with the
|
|
* usb_driver structure initialization.
|
|
*/
|
|
#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
|
|
|
|
/*
|
|
* For USB vendor requests we need to pass a timeout
|
|
* time in ms, for this we use the REGISTER_TIMEOUT,
|
|
* however when loading firmware a higher value is
|
|
* required. In that case we use the REGISTER_TIMEOUT_FIRMWARE.
|
|
*/
|
|
#define REGISTER_TIMEOUT 500
|
|
#define REGISTER_TIMEOUT_FIRMWARE 1000
|
|
|
|
/**
|
|
* REGISTER_TIMEOUT16 - Determine the timeout for 16bit register access
|
|
* @__datalen: Data length
|
|
*/
|
|
#define REGISTER_TIMEOUT16(__datalen) \
|
|
( REGISTER_TIMEOUT * ((__datalen) / sizeof(u16)) )
|
|
|
|
/**
|
|
* REGISTER_TIMEOUT32 - Determine the timeout for 32bit register access
|
|
* @__datalen: Data length
|
|
*/
|
|
#define REGISTER_TIMEOUT32(__datalen) \
|
|
( REGISTER_TIMEOUT * ((__datalen) / sizeof(u32)) )
|
|
|
|
/*
|
|
* Cache size
|
|
*/
|
|
#define CSR_CACHE_SIZE 64
|
|
|
|
/*
|
|
* USB request types.
|
|
*/
|
|
#define USB_VENDOR_REQUEST ( USB_TYPE_VENDOR | USB_RECIP_DEVICE )
|
|
#define USB_VENDOR_REQUEST_IN ( USB_DIR_IN | USB_VENDOR_REQUEST )
|
|
#define USB_VENDOR_REQUEST_OUT ( USB_DIR_OUT | USB_VENDOR_REQUEST )
|
|
|
|
/**
|
|
* enum rt2x00usb_vendor_request: USB vendor commands.
|
|
*/
|
|
enum rt2x00usb_vendor_request {
|
|
USB_DEVICE_MODE = 1,
|
|
USB_SINGLE_WRITE = 2,
|
|
USB_SINGLE_READ = 3,
|
|
USB_MULTI_WRITE = 6,
|
|
USB_MULTI_READ = 7,
|
|
USB_EEPROM_WRITE = 8,
|
|
USB_EEPROM_READ = 9,
|
|
USB_LED_CONTROL = 10, /* RT73USB */
|
|
USB_RX_CONTROL = 12,
|
|
};
|
|
|
|
/**
|
|
* enum rt2x00usb_mode_offset: Device modes offset.
|
|
*/
|
|
enum rt2x00usb_mode_offset {
|
|
USB_MODE_RESET = 1,
|
|
USB_MODE_UNPLUG = 2,
|
|
USB_MODE_FUNCTION = 3,
|
|
USB_MODE_TEST = 4,
|
|
USB_MODE_SLEEP = 7, /* RT73USB */
|
|
USB_MODE_FIRMWARE = 8, /* RT73USB */
|
|
USB_MODE_WAKEUP = 9, /* RT73USB */
|
|
};
|
|
|
|
/**
|
|
* rt2x00usb_vendor_request - Send register command to device
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev
|
|
* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
|
|
* @requesttype: Request type &USB_VENDOR_REQUEST_*
|
|
* @offset: Register offset to perform action on
|
|
* @value: Value to write to device
|
|
* @buffer: Buffer where information will be read/written to by device
|
|
* @buffer_length: Size of &buffer
|
|
* @timeout: Operation timeout
|
|
*
|
|
* This is the main function to communicate with the device,
|
|
* the &buffer argument _must_ either be NULL or point to
|
|
* a buffer allocated by kmalloc. Failure to do so can lead
|
|
* to unexpected behavior depending on the architecture.
|
|
*/
|
|
int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
|
|
const u8 request, const u8 requesttype,
|
|
const u16 offset, const u16 value,
|
|
void *buffer, const u16 buffer_length,
|
|
const int timeout);
|
|
|
|
/**
|
|
* rt2x00usb_vendor_request_buff - Send register command to device (buffered)
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev
|
|
* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
|
|
* @requesttype: Request type &USB_VENDOR_REQUEST_*
|
|
* @offset: Register offset to perform action on
|
|
* @buffer: Buffer where information will be read/written to by device
|
|
* @buffer_length: Size of &buffer
|
|
* @timeout: Operation timeout
|
|
*
|
|
* This function will use a previously with kmalloc allocated cache
|
|
* to communicate with the device. The contents of the buffer pointer
|
|
* will be copied to this cache when writing, or read from the cache
|
|
* when reading.
|
|
* Buffers send to &rt2x00usb_vendor_request _must_ be allocated with
|
|
* kmalloc. Hence the reason for using a previously allocated cache
|
|
* which has been allocated properly.
|
|
*/
|
|
int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
|
|
const u8 request, const u8 requesttype,
|
|
const u16 offset, void *buffer,
|
|
const u16 buffer_length, const int timeout);
|
|
|
|
/**
|
|
* rt2x00usb_vendor_request_buff - Send register command to device (buffered)
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev
|
|
* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
|
|
* @requesttype: Request type &USB_VENDOR_REQUEST_*
|
|
* @offset: Register offset to perform action on
|
|
* @buffer: Buffer where information will be read/written to by device
|
|
* @buffer_length: Size of &buffer
|
|
* @timeout: Operation timeout
|
|
*
|
|
* A version of &rt2x00usb_vendor_request_buff which must be called
|
|
* if the usb_cache_mutex is already held.
|
|
*/
|
|
int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
|
|
const u8 request, const u8 requesttype,
|
|
const u16 offset, void *buffer,
|
|
const u16 buffer_length, const int timeout);
|
|
|
|
/**
|
|
* rt2x00usb_vendor_request_sw - Send single register command to device
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev
|
|
* @request: USB vendor command (See &enum rt2x00usb_vendor_request)
|
|
* @offset: Register offset to perform action on
|
|
* @value: Value to write to device
|
|
* @timeout: Operation timeout
|
|
*
|
|
* Simple wrapper around rt2x00usb_vendor_request to write a single
|
|
* command to the device. Since we don't use the buffer argument we
|
|
* don't have to worry about kmalloc here.
|
|
*/
|
|
static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev,
|
|
const u8 request,
|
|
const u16 offset,
|
|
const u16 value,
|
|
const int timeout)
|
|
{
|
|
return rt2x00usb_vendor_request(rt2x00dev, request,
|
|
USB_VENDOR_REQUEST_OUT, offset,
|
|
value, NULL, 0, timeout);
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_eeprom_read - Read eeprom from device
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev
|
|
* @eeprom: Pointer to eeprom array to store the information in
|
|
* @length: Number of bytes to read from the eeprom
|
|
*
|
|
* Simple wrapper around rt2x00usb_vendor_request to read the eeprom
|
|
* from the device. Note that the eeprom argument _must_ be allocated using
|
|
* kmalloc for correct handling inside the kernel USB layer.
|
|
*/
|
|
static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev,
|
|
__le16 *eeprom, const u16 length)
|
|
{
|
|
return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ,
|
|
USB_VENDOR_REQUEST_IN, 0, 0,
|
|
eeprom, length,
|
|
REGISTER_TIMEOUT16(length));
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_register_read - Read 32bit register word
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @value: Pointer to where register contents should be stored
|
|
*
|
|
* This function is a simple wrapper for 32bit register access
|
|
* through rt2x00usb_vendor_request_buff().
|
|
*/
|
|
static inline void rt2x00usb_register_read(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
u32 *value)
|
|
{
|
|
__le32 reg;
|
|
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
|
|
USB_VENDOR_REQUEST_IN, offset,
|
|
®, sizeof(reg), REGISTER_TIMEOUT);
|
|
*value = le32_to_cpu(reg);
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_register_read_lock - Read 32bit register word
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @value: Pointer to where register contents should be stored
|
|
*
|
|
* This function is a simple wrapper for 32bit register access
|
|
* through rt2x00usb_vendor_req_buff_lock().
|
|
*/
|
|
static inline void rt2x00usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
u32 *value)
|
|
{
|
|
__le32 reg;
|
|
rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
|
|
USB_VENDOR_REQUEST_IN, offset,
|
|
®, sizeof(reg), REGISTER_TIMEOUT);
|
|
*value = le32_to_cpu(reg);
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_register_multiread - Read 32bit register words
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @value: Pointer to where register contents should be stored
|
|
* @length: Length of the data
|
|
*
|
|
* This function is a simple wrapper for 32bit register access
|
|
* through rt2x00usb_vendor_request_buff().
|
|
*/
|
|
static inline void rt2x00usb_register_multiread(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
void *value, const u32 length)
|
|
{
|
|
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
|
|
USB_VENDOR_REQUEST_IN, offset,
|
|
value, length,
|
|
REGISTER_TIMEOUT32(length));
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_register_write - Write 32bit register word
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @value: Data which should be written
|
|
*
|
|
* This function is a simple wrapper for 32bit register access
|
|
* through rt2x00usb_vendor_request_buff().
|
|
*/
|
|
static inline void rt2x00usb_register_write(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
u32 value)
|
|
{
|
|
__le32 reg = cpu_to_le32(value);
|
|
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
|
|
USB_VENDOR_REQUEST_OUT, offset,
|
|
®, sizeof(reg), REGISTER_TIMEOUT);
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_register_write_lock - Write 32bit register word
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @value: Data which should be written
|
|
*
|
|
* This function is a simple wrapper for 32bit register access
|
|
* through rt2x00usb_vendor_req_buff_lock().
|
|
*/
|
|
static inline void rt2x00usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
u32 value)
|
|
{
|
|
__le32 reg = cpu_to_le32(value);
|
|
rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
|
|
USB_VENDOR_REQUEST_OUT, offset,
|
|
®, sizeof(reg), REGISTER_TIMEOUT);
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_register_multiwrite - Write 32bit register words
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @value: Data which should be written
|
|
* @length: Length of the data
|
|
*
|
|
* This function is a simple wrapper for 32bit register access
|
|
* through rt2x00usb_vendor_request_buff().
|
|
*/
|
|
static inline void rt2x00usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
const void *value,
|
|
const u32 length)
|
|
{
|
|
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
|
|
USB_VENDOR_REQUEST_OUT, offset,
|
|
(void *)value, length,
|
|
REGISTER_TIMEOUT32(length));
|
|
}
|
|
|
|
/**
|
|
* rt2x00usb_regbusy_read - Read from register with busy check
|
|
* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
|
|
* @offset: Register offset
|
|
* @field: Field to check if register is busy
|
|
* @reg: Pointer to where register contents should be stored
|
|
*
|
|
* This function will read the given register, and checks if the
|
|
* register is busy. If it is, it will sleep for a couple of
|
|
* microseconds before reading the register again. If the register
|
|
* is not read after a certain timeout, this function will return
|
|
* FALSE.
|
|
*/
|
|
int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int offset,
|
|
const struct rt2x00_field32 field,
|
|
u32 *reg);
|
|
|
|
/*
|
|
* Radio handlers
|
|
*/
|
|
void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);
|
|
|
|
/**
|
|
* struct queue_entry_priv_usb: Per entry USB specific information
|
|
*
|
|
* @urb: Urb structure used for device communication.
|
|
*/
|
|
struct queue_entry_priv_usb {
|
|
struct urb *urb;
|
|
};
|
|
|
|
/**
|
|
* struct queue_entry_priv_usb_bcn: Per TX entry USB specific information
|
|
*
|
|
* The first section should match &struct queue_entry_priv_usb exactly.
|
|
* rt2500usb can use this structure to send a guardian byte when working
|
|
* with beacons.
|
|
*
|
|
* @urb: Urb structure used for device communication.
|
|
* @guardian_data: Set to 0, used for sending the guardian data.
|
|
* @guardian_urb: Urb structure used to send the guardian data.
|
|
*/
|
|
struct queue_entry_priv_usb_bcn {
|
|
struct urb *urb;
|
|
|
|
unsigned int guardian_data;
|
|
struct urb *guardian_urb;
|
|
};
|
|
|
|
/**
|
|
* rt2x00usb_kick_queue - Kick data queue
|
|
* @queue: Data queue to kick
|
|
*
|
|
* This will walk through all entries of the queue and push all pending
|
|
* frames to the hardware as a single burst.
|
|
*/
|
|
void rt2x00usb_kick_queue(struct data_queue *queue);
|
|
|
|
/**
|
|
* rt2x00usb_flush_queue - Flush data queue
|
|
* @queue: Data queue to stop
|
|
*
|
|
* This will walk through all entries of the queue and kill all
|
|
* URB's which were send to the device.
|
|
*/
|
|
void rt2x00usb_flush_queue(struct data_queue *queue);
|
|
|
|
/**
|
|
* rt2x00usb_watchdog - Watchdog for USB communication
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev
|
|
*
|
|
* Check the health of the USB communication and determine
|
|
* if timeouts have occured. If this is the case, this function
|
|
* will reset all communication to restore functionality again.
|
|
*/
|
|
void rt2x00usb_watchdog(struct rt2x00_dev *rt2x00dev);
|
|
|
|
/*
|
|
* Device initialization handlers.
|
|
*/
|
|
void rt2x00usb_clear_entry(struct queue_entry *entry);
|
|
int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev);
|
|
void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);
|
|
|
|
/*
|
|
* USB driver handlers.
|
|
*/
|
|
int rt2x00usb_probe(struct usb_interface *usb_intf,
|
|
const struct usb_device_id *id);
|
|
void rt2x00usb_disconnect(struct usb_interface *usb_intf);
|
|
#ifdef CONFIG_PM
|
|
int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state);
|
|
int rt2x00usb_resume(struct usb_interface *usb_intf);
|
|
#else
|
|
#define rt2x00usb_suspend NULL
|
|
#define rt2x00usb_resume NULL
|
|
#endif /* CONFIG_PM */
|
|
|
|
#endif /* RT2X00USB_H */
|