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/*
Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
<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
/*
* This variable should be used with the
* usb_driver structure initialization.
*/
#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
/*
* Register defines.
* Some registers require multiple attempts before success,
* in those cases REGISTER_BUSY_COUNT attempts should be
* taken with a REGISTER_BUSY_DELAY interval.
* 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_BUSY_COUNT 5
#define REGISTER_BUSY_DELAY 100
#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 8
#define CSR_CACHE_SIZE_FIRMWARE 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));
}
/*
* Radio handlers
*/
void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);
/*
* TX data handlers.
*/
int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
struct data_queue *queue, struct sk_buff *skb);
/**
* 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_tx_queue - Kick data queue
* @rt2x00dev: Pointer to &struct rt2x00_dev
* @qid: 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_tx_queue(struct rt2x00_dev *rt2x00dev,
const enum data_queue_qid qid);
/*
* Device initialization handlers.
*/
void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
struct queue_entry *entry);
void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
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 */
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