2 Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 Abstract: Data structures for the rt2x00usb module.
29 #define to_usb_device_intf(d) \
31 struct usb_interface *intf = to_usb_interface(d); \
32 interface_to_usbdev(intf); \
36 * This variable should be used with the
37 * usb_driver structure initialization.
39 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
43 * Some registers require multiple attempts before success,
44 * in those cases REGISTER_BUSY_COUNT attempts should be
45 * taken with a REGISTER_BUSY_DELAY interval.
46 * For USB vendor requests we need to pass a timeout
47 * time in ms, for this we use the REGISTER_TIMEOUT,
48 * however when loading firmware a higher value is
49 * required. In that case we use the REGISTER_TIMEOUT_FIRMWARE.
51 #define REGISTER_BUSY_COUNT 5
52 #define REGISTER_BUSY_DELAY 100
53 #define REGISTER_TIMEOUT 500
54 #define REGISTER_TIMEOUT_FIRMWARE 1000
57 * REGISTER_TIMEOUT16 - Determine the timeout for 16bit register access
58 * @__datalen: Data length
60 #define REGISTER_TIMEOUT16(__datalen) \
61 ( REGISTER_TIMEOUT * ((__datalen) / sizeof(u16)) )
64 * REGISTER_TIMEOUT32 - Determine the timeout for 32bit register access
65 * @__datalen: Data length
67 #define REGISTER_TIMEOUT32(__datalen) \
68 ( REGISTER_TIMEOUT * ((__datalen) / sizeof(u32)) )
73 #define CSR_CACHE_SIZE 64
78 #define USB_VENDOR_REQUEST ( USB_TYPE_VENDOR | USB_RECIP_DEVICE )
79 #define USB_VENDOR_REQUEST_IN ( USB_DIR_IN | USB_VENDOR_REQUEST )
80 #define USB_VENDOR_REQUEST_OUT ( USB_DIR_OUT | USB_VENDOR_REQUEST )
83 * enum rt2x00usb_vendor_request: USB vendor commands.
85 enum rt2x00usb_vendor_request {
93 USB_LED_CONTROL = 10, /* RT73USB */
98 * enum rt2x00usb_mode_offset: Device modes offset.
100 enum rt2x00usb_mode_offset {
103 USB_MODE_FUNCTION = 3,
105 USB_MODE_SLEEP = 7, /* RT73USB */
106 USB_MODE_FIRMWARE = 8, /* RT73USB */
107 USB_MODE_WAKEUP = 9, /* RT73USB */
111 * rt2x00usb_vendor_request - Send register command to device
112 * @rt2x00dev: Pointer to &struct rt2x00_dev
113 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
114 * @requesttype: Request type &USB_VENDOR_REQUEST_*
115 * @offset: Register offset to perform action on
116 * @value: Value to write to device
117 * @buffer: Buffer where information will be read/written to by device
118 * @buffer_length: Size of &buffer
119 * @timeout: Operation timeout
121 * This is the main function to communicate with the device,
122 * the &buffer argument _must_ either be NULL or point to
123 * a buffer allocated by kmalloc. Failure to do so can lead
124 * to unexpected behavior depending on the architecture.
126 int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
127 const u8 request, const u8 requesttype,
128 const u16 offset, const u16 value,
129 void *buffer, const u16 buffer_length,
133 * rt2x00usb_vendor_request_buff - Send register command to device (buffered)
134 * @rt2x00dev: Pointer to &struct rt2x00_dev
135 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
136 * @requesttype: Request type &USB_VENDOR_REQUEST_*
137 * @offset: Register offset to perform action on
138 * @buffer: Buffer where information will be read/written to by device
139 * @buffer_length: Size of &buffer
140 * @timeout: Operation timeout
142 * This function will use a previously with kmalloc allocated cache
143 * to communicate with the device. The contents of the buffer pointer
144 * will be copied to this cache when writing, or read from the cache
146 * Buffers send to &rt2x00usb_vendor_request _must_ be allocated with
147 * kmalloc. Hence the reason for using a previously allocated cache
148 * which has been allocated properly.
150 int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
151 const u8 request, const u8 requesttype,
152 const u16 offset, void *buffer,
153 const u16 buffer_length, const int timeout);
156 * rt2x00usb_vendor_request_buff - Send register command to device (buffered)
157 * @rt2x00dev: Pointer to &struct rt2x00_dev
158 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
159 * @requesttype: Request type &USB_VENDOR_REQUEST_*
160 * @offset: Register offset to perform action on
161 * @buffer: Buffer where information will be read/written to by device
162 * @buffer_length: Size of &buffer
163 * @timeout: Operation timeout
165 * A version of &rt2x00usb_vendor_request_buff which must be called
166 * if the usb_cache_mutex is already held.
168 int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
169 const u8 request, const u8 requesttype,
170 const u16 offset, void *buffer,
171 const u16 buffer_length, const int timeout);
174 * rt2x00usb_vendor_request_large_buff - Send register command to device (buffered)
175 * @rt2x00dev: Pointer to &struct rt2x00_dev
176 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
177 * @requesttype: Request type &USB_VENDOR_REQUEST_*
178 * @offset: Register start offset to perform action on
179 * @buffer: Buffer where information will be read/written to by device
180 * @buffer_length: Size of &buffer
181 * @timeout: Operation timeout
183 * This function is used to transfer register data in blocks larger
184 * then CSR_CACHE_SIZE. Use for firmware upload, keys and beacons.
186 int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev,
187 const u8 request, const u8 requesttype,
188 const u16 offset, const void *buffer,
189 const u16 buffer_length,
193 * rt2x00usb_vendor_request_sw - Send single register command to device
194 * @rt2x00dev: Pointer to &struct rt2x00_dev
195 * @request: USB vendor command (See &enum rt2x00usb_vendor_request)
196 * @offset: Register offset to perform action on
197 * @value: Value to write to device
198 * @timeout: Operation timeout
200 * Simple wrapper around rt2x00usb_vendor_request to write a single
201 * command to the device. Since we don't use the buffer argument we
202 * don't have to worry about kmalloc here.
204 static inline int rt2x00usb_vendor_request_sw(struct rt2x00_dev *rt2x00dev,
210 return rt2x00usb_vendor_request(rt2x00dev, request,
211 USB_VENDOR_REQUEST_OUT, offset,
212 value, NULL, 0, timeout);
216 * rt2x00usb_eeprom_read - Read eeprom from device
217 * @rt2x00dev: Pointer to &struct rt2x00_dev
218 * @eeprom: Pointer to eeprom array to store the information in
219 * @length: Number of bytes to read from the eeprom
221 * Simple wrapper around rt2x00usb_vendor_request to read the eeprom
222 * from the device. Note that the eeprom argument _must_ be allocated using
223 * kmalloc for correct handling inside the kernel USB layer.
225 static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev,
226 __le16 *eeprom, const u16 length)
228 return rt2x00usb_vendor_request(rt2x00dev, USB_EEPROM_READ,
229 USB_VENDOR_REQUEST_IN, 0, 0,
231 REGISTER_TIMEOUT16(length));
235 * rt2x00usb_regbusy_read - Read 32bit register word
236 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
237 * @offset: Register offset
238 * @value: Pointer to where register contents should be stored
240 * This function is a simple wrapper for 32bit register access
241 * through rt2x00usb_vendor_request_buff().
243 static inline void rt2x00usb_register_read(struct rt2x00_dev *rt2x00dev,
244 const unsigned int offset,
248 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
249 USB_VENDOR_REQUEST_IN, offset,
250 ®, sizeof(reg), REGISTER_TIMEOUT);
251 *value = le32_to_cpu(reg);
255 * rt2x00usb_register_read_lock - Read 32bit register word
256 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
257 * @offset: Register offset
258 * @value: Pointer to where register contents should be stored
260 * This function is a simple wrapper for 32bit register access
261 * through rt2x00usb_vendor_req_buff_lock().
263 static inline void rt2x00usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
264 const unsigned int offset,
268 rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
269 USB_VENDOR_REQUEST_IN, offset,
270 ®, sizeof(reg), REGISTER_TIMEOUT);
271 *value = le32_to_cpu(reg);
275 * rt2x00usb_register_multiread - Read 32bit register words
276 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
277 * @offset: Register offset
278 * @value: Pointer to where register contents should be stored
279 * @length: Length of the data
281 * This function is a simple wrapper for 32bit register access
282 * through rt2x00usb_vendor_request_buff().
284 static inline void rt2x00usb_register_multiread(struct rt2x00_dev *rt2x00dev,
285 const unsigned int offset,
286 void *value, const u32 length)
288 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
289 USB_VENDOR_REQUEST_IN, offset,
291 REGISTER_TIMEOUT32(length));
295 * rt2x00usb_register_write - Write 32bit register word
296 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
297 * @offset: Register offset
298 * @value: Data which should be written
300 * This function is a simple wrapper for 32bit register access
301 * through rt2x00usb_vendor_request_buff().
303 static inline void rt2x00usb_register_write(struct rt2x00_dev *rt2x00dev,
304 const unsigned int offset,
307 __le32 reg = cpu_to_le32(value);
308 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
309 USB_VENDOR_REQUEST_OUT, offset,
310 ®, sizeof(reg), REGISTER_TIMEOUT);
314 * rt2x00usb_register_write_lock - Write 32bit register word
315 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
316 * @offset: Register offset
317 * @value: Data which should be written
319 * This function is a simple wrapper for 32bit register access
320 * through rt2x00usb_vendor_req_buff_lock().
322 static inline void rt2x00usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
323 const unsigned int offset,
326 __le32 reg = cpu_to_le32(value);
327 rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
328 USB_VENDOR_REQUEST_OUT, offset,
329 ®, sizeof(reg), REGISTER_TIMEOUT);
333 * rt2x00usb_register_multiwrite - Write 32bit register words
334 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
335 * @offset: Register offset
336 * @value: Data which should be written
337 * @length: Length of the data
339 * This function is a simple wrapper for 32bit register access
340 * through rt2x00usb_vendor_request_buff().
342 static inline void rt2x00usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
343 const unsigned int offset,
344 void *value, const u32 length)
346 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
347 USB_VENDOR_REQUEST_OUT, offset,
349 REGISTER_TIMEOUT32(length));
353 * rt2x00usb_regbusy_read - Read from register with busy check
354 * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
355 * @offset: Register offset
356 * @field: Field to check if register is busy
357 * @reg: Pointer to where register contents should be stored
359 * This function will read the given register, and checks if the
360 * register is busy. If it is, it will sleep for a couple of
361 * microseconds before reading the register again. If the register
362 * is not read after a certain timeout, this function will return
365 int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
366 const unsigned int offset,
367 struct rt2x00_field32 field,
373 void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);
376 * rt2x00usb_write_tx_data - Initialize URB for TX operation
377 * @entry: The entry where the frame is located
379 * This function will initialize the URB and skb descriptor
380 * to prepare the entry for the actual TX operation.
382 int rt2x00usb_write_tx_data(struct queue_entry *entry);
385 * struct queue_entry_priv_usb: Per entry USB specific information
387 * @urb: Urb structure used for device communication.
389 struct queue_entry_priv_usb {
394 * struct queue_entry_priv_usb_bcn: Per TX entry USB specific information
396 * The first section should match &struct queue_entry_priv_usb exactly.
397 * rt2500usb can use this structure to send a guardian byte when working
400 * @urb: Urb structure used for device communication.
401 * @guardian_data: Set to 0, used for sending the guardian data.
402 * @guardian_urb: Urb structure used to send the guardian data.
404 struct queue_entry_priv_usb_bcn {
407 unsigned int guardian_data;
408 struct urb *guardian_urb;
412 * rt2x00usb_kick_tx_queue - Kick data queue
413 * @rt2x00dev: Pointer to &struct rt2x00_dev
414 * @qid: Data queue to kick
416 * This will walk through all entries of the queue and push all pending
417 * frames to the hardware as a single burst.
419 void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
420 const enum data_queue_qid qid);
423 * rt2x00usb_kill_tx_queue - Kill data queue
424 * @rt2x00dev: Pointer to &struct rt2x00_dev
425 * @qid: Data queue to kill
427 * This will walk through all entries of the queue and kill all
428 * previously kicked frames before they can be send.
430 void rt2x00usb_kill_tx_queue(struct rt2x00_dev *rt2x00dev,
431 const enum data_queue_qid qid);
434 * Device initialization handlers.
436 void rt2x00usb_clear_entry(struct queue_entry *entry);
437 int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev);
438 void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);
441 * USB driver handlers.
443 int rt2x00usb_probe(struct usb_interface *usb_intf,
444 const struct usb_device_id *id);
445 void rt2x00usb_disconnect(struct usb_interface *usb_intf);
447 int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state);
448 int rt2x00usb_resume(struct usb_interface *usb_intf);
450 #define rt2x00usb_suspend NULL
451 #define rt2x00usb_resume NULL
452 #endif /* CONFIG_PM */
454 #endif /* RT2X00USB_H */