Commit | Line | Data |
---|---|---|
95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00usb | |
23 | Abstract: rt2x00 generic usb device routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | #include <linux/usb.h> | |
3d82346c | 29 | #include <linux/bug.h> |
95ea3627 ID |
30 | |
31 | #include "rt2x00.h" | |
32 | #include "rt2x00usb.h" | |
33 | ||
34 | /* | |
35 | * Interfacing with the HW. | |
36 | */ | |
0e14f6d3 | 37 | int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev, |
95ea3627 ID |
38 | const u8 request, const u8 requesttype, |
39 | const u16 offset, const u16 value, | |
40 | void *buffer, const u16 buffer_length, | |
e9136550 | 41 | const int timeout) |
95ea3627 | 42 | { |
14a3bf89 GW |
43 | struct usb_device *usb_dev = |
44 | interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); | |
95ea3627 ID |
45 | int status; |
46 | unsigned int i; | |
47 | unsigned int pipe = | |
48 | (requesttype == USB_VENDOR_REQUEST_IN) ? | |
49 | usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0); | |
50 | ||
3d82346c | 51 | |
95ea3627 ID |
52 | for (i = 0; i < REGISTER_BUSY_COUNT; i++) { |
53 | status = usb_control_msg(usb_dev, pipe, request, requesttype, | |
54 | value, offset, buffer, buffer_length, | |
55 | timeout); | |
56 | if (status >= 0) | |
57 | return 0; | |
58 | ||
59 | /* | |
e9136550 | 60 | * Check for errors |
95ea3627 | 61 | * -ENODEV: Device has disappeared, no point continuing. |
e9136550 | 62 | * All other errors: Try again. |
95ea3627 | 63 | */ |
95ea3627 ID |
64 | else if (status == -ENODEV) |
65 | break; | |
66 | } | |
67 | ||
68 | ERROR(rt2x00dev, | |
69 | "Vendor Request 0x%02x failed for offset 0x%04x with error %d.\n", | |
70 | request, offset, status); | |
71 | ||
72 | return status; | |
73 | } | |
74 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request); | |
75 | ||
3d82346c AB |
76 | int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev, |
77 | const u8 request, const u8 requesttype, | |
78 | const u16 offset, void *buffer, | |
79 | const u16 buffer_length, const int timeout) | |
95ea3627 ID |
80 | { |
81 | int status; | |
82 | ||
3d82346c AB |
83 | BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex)); |
84 | ||
95ea3627 ID |
85 | /* |
86 | * Check for Cache availability. | |
87 | */ | |
21795094 | 88 | if (unlikely(!rt2x00dev->csr.cache || buffer_length > CSR_CACHE_SIZE)) { |
95ea3627 ID |
89 | ERROR(rt2x00dev, "CSR cache not available.\n"); |
90 | return -ENOMEM; | |
91 | } | |
92 | ||
93 | if (requesttype == USB_VENDOR_REQUEST_OUT) | |
21795094 | 94 | memcpy(rt2x00dev->csr.cache, buffer, buffer_length); |
95ea3627 ID |
95 | |
96 | status = rt2x00usb_vendor_request(rt2x00dev, request, requesttype, | |
21795094 | 97 | offset, 0, rt2x00dev->csr.cache, |
95ea3627 ID |
98 | buffer_length, timeout); |
99 | ||
100 | if (!status && requesttype == USB_VENDOR_REQUEST_IN) | |
21795094 | 101 | memcpy(buffer, rt2x00dev->csr.cache, buffer_length); |
95ea3627 ID |
102 | |
103 | return status; | |
104 | } | |
3d82346c AB |
105 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_req_buff_lock); |
106 | ||
107 | int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev, | |
108 | const u8 request, const u8 requesttype, | |
109 | const u16 offset, void *buffer, | |
110 | const u16 buffer_length, const int timeout) | |
111 | { | |
112 | int status; | |
113 | ||
114 | mutex_lock(&rt2x00dev->usb_cache_mutex); | |
115 | ||
116 | status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request, | |
117 | requesttype, offset, buffer, | |
118 | buffer_length, timeout); | |
119 | ||
120 | mutex_unlock(&rt2x00dev->usb_cache_mutex); | |
121 | ||
122 | return status; | |
123 | } | |
95ea3627 ID |
124 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff); |
125 | ||
126 | /* | |
127 | * TX data handlers. | |
128 | */ | |
129 | static void rt2x00usb_interrupt_txdone(struct urb *urb) | |
130 | { | |
181d6902 ID |
131 | struct queue_entry *entry = (struct queue_entry *)urb->context; |
132 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; | |
181d6902 | 133 | struct txdone_entry_desc txdesc; |
95ea3627 ID |
134 | |
135 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || | |
d74f5ba4 | 136 | !test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) |
95ea3627 ID |
137 | return; |
138 | ||
95ea3627 ID |
139 | /* |
140 | * Remove the descriptor data from the buffer. | |
141 | */ | |
181d6902 | 142 | skb_pull(entry->skb, entry->queue->desc_size); |
95ea3627 ID |
143 | |
144 | /* | |
145 | * Obtain the status about this packet. | |
fb55f4d1 ID |
146 | * Note that when the status is 0 it does not mean the |
147 | * frame was send out correctly. It only means the frame | |
148 | * was succesfully pushed to the hardware, we have no | |
149 | * way to determine the transmission status right now. | |
150 | * (Only indirectly by looking at the failed TX counters | |
151 | * in the register). | |
95ea3627 | 152 | */ |
fb55f4d1 ID |
153 | if (!urb->status) |
154 | __set_bit(TXDONE_UNKNOWN, &txdesc.flags); | |
155 | else | |
156 | __set_bit(TXDONE_FAILURE, &txdesc.flags); | |
181d6902 | 157 | txdesc.retry = 0; |
95ea3627 | 158 | |
181d6902 | 159 | rt2x00lib_txdone(entry, &txdesc); |
95ea3627 ID |
160 | } |
161 | ||
6db3786a | 162 | int rt2x00usb_write_tx_data(struct queue_entry *entry) |
95ea3627 | 163 | { |
6db3786a | 164 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
14a3bf89 GW |
165 | struct usb_device *usb_dev = |
166 | interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); | |
b8be63ff | 167 | struct queue_entry_priv_usb *entry_priv = entry->priv_data; |
181d6902 | 168 | struct skb_frame_desc *skbdesc; |
dd9fa2d2 | 169 | u32 length; |
95ea3627 | 170 | |
95ea3627 ID |
171 | /* |
172 | * Add the descriptor in front of the skb. | |
173 | */ | |
6db3786a ID |
174 | skb_push(entry->skb, entry->queue->desc_size); |
175 | memset(entry->skb->data, 0, entry->queue->desc_size); | |
95ea3627 | 176 | |
08992f7f ID |
177 | /* |
178 | * Fill in skb descriptor | |
179 | */ | |
6db3786a | 180 | skbdesc = get_skb_frame_desc(entry->skb); |
6db3786a ID |
181 | skbdesc->desc = entry->skb->data; |
182 | skbdesc->desc_len = entry->queue->desc_size; | |
08992f7f | 183 | |
95ea3627 | 184 | /* |
dd9fa2d2 ID |
185 | * USB devices cannot blindly pass the skb->len as the |
186 | * length of the data to usb_fill_bulk_urb. Pass the skb | |
187 | * to the driver to determine what the length should be. | |
95ea3627 | 188 | */ |
6db3786a | 189 | length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb); |
95ea3627 | 190 | |
6db3786a ID |
191 | usb_fill_bulk_urb(entry_priv->urb, usb_dev, |
192 | usb_sndbulkpipe(usb_dev, 1), | |
193 | entry->skb->data, length, | |
194 | rt2x00usb_interrupt_txdone, entry); | |
95ea3627 | 195 | |
95ea3627 ID |
196 | return 0; |
197 | } | |
198 | EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data); | |
199 | ||
f019d514 ID |
200 | static inline void rt2x00usb_kick_tx_entry(struct queue_entry *entry) |
201 | { | |
202 | struct queue_entry_priv_usb *entry_priv = entry->priv_data; | |
203 | ||
204 | if (__test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags)) | |
205 | usb_submit_urb(entry_priv->urb, GFP_ATOMIC); | |
206 | } | |
207 | ||
208 | void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev, | |
209 | const enum data_queue_qid qid) | |
210 | { | |
211 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, qid); | |
212 | unsigned long irqflags; | |
213 | unsigned int index; | |
214 | unsigned int index_done; | |
215 | unsigned int i; | |
216 | ||
217 | /* | |
218 | * Only protect the range we are going to loop over, | |
219 | * if during our loop a extra entry is set to pending | |
220 | * it should not be kicked during this run, since it | |
221 | * is part of another TX operation. | |
222 | */ | |
223 | spin_lock_irqsave(&queue->lock, irqflags); | |
224 | index = queue->index[Q_INDEX]; | |
225 | index_done = queue->index[Q_INDEX_DONE]; | |
226 | spin_unlock_irqrestore(&queue->lock, irqflags); | |
227 | ||
228 | /* | |
229 | * Start from the TX done pointer, this guarentees that we will | |
230 | * send out all frames in the correct order. | |
231 | */ | |
232 | if (index_done < index) { | |
233 | for (i = index_done; i < index; i++) | |
234 | rt2x00usb_kick_tx_entry(&queue->entries[i]); | |
235 | } else { | |
236 | for (i = index_done; i < queue->limit; i++) | |
237 | rt2x00usb_kick_tx_entry(&queue->entries[i]); | |
238 | ||
239 | for (i = 0; i < index; i++) | |
240 | rt2x00usb_kick_tx_entry(&queue->entries[i]); | |
241 | } | |
242 | } | |
243 | EXPORT_SYMBOL_GPL(rt2x00usb_kick_tx_queue); | |
244 | ||
95ea3627 ID |
245 | /* |
246 | * RX data handlers. | |
247 | */ | |
248 | static void rt2x00usb_interrupt_rxdone(struct urb *urb) | |
249 | { | |
181d6902 ID |
250 | struct queue_entry *entry = (struct queue_entry *)urb->context; |
251 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; | |
c4da0048 | 252 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
a26cbc65 | 253 | u8 rxd[32]; |
95ea3627 ID |
254 | |
255 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || | |
d74f5ba4 | 256 | !test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) |
95ea3627 ID |
257 | return; |
258 | ||
259 | /* | |
260 | * Check if the received data is simply too small | |
261 | * to be actually valid, or if the urb is signaling | |
262 | * a problem. | |
263 | */ | |
d74f5ba4 ID |
264 | if (urb->actual_length < entry->queue->desc_size || urb->status) { |
265 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); | |
266 | usb_submit_urb(urb, GFP_ATOMIC); | |
267 | return; | |
268 | } | |
95ea3627 | 269 | |
40561b84 | 270 | /* |
c4da0048 | 271 | * Fill in desc fields of the skb descriptor |
40561b84 | 272 | */ |
a26cbc65 GW |
273 | skbdesc->desc = rxd; |
274 | skbdesc->desc_len = entry->queue->desc_size; | |
40561b84 | 275 | |
95ea3627 ID |
276 | /* |
277 | * Send the frame to rt2x00lib for further processing. | |
278 | */ | |
c4da0048 | 279 | rt2x00lib_rxdone(rt2x00dev, entry); |
95ea3627 ID |
280 | } |
281 | ||
282 | /* | |
283 | * Radio handlers | |
284 | */ | |
95ea3627 ID |
285 | void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev) |
286 | { | |
b8be63ff ID |
287 | struct queue_entry_priv_usb *entry_priv; |
288 | struct queue_entry_priv_usb_bcn *bcn_priv; | |
95ea3627 ID |
289 | unsigned int i; |
290 | ||
bd394a74 | 291 | rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0, 0, |
95ea3627 ID |
292 | REGISTER_TIMEOUT); |
293 | ||
294 | /* | |
181d6902 | 295 | * Cancel all queues. |
95ea3627 | 296 | */ |
181d6902 | 297 | for (i = 0; i < rt2x00dev->rx->limit; i++) { |
b8be63ff ID |
298 | entry_priv = rt2x00dev->rx->entries[i].priv_data; |
299 | usb_kill_urb(entry_priv->urb); | |
95ea3627 | 300 | } |
330e3f95 | 301 | |
b8be63ff | 302 | /* |
edfa78b2 | 303 | * Kill guardian urb (if required by driver). |
b8be63ff | 304 | */ |
edfa78b2 ID |
305 | if (!test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)) |
306 | return; | |
307 | ||
330e3f95 | 308 | for (i = 0; i < rt2x00dev->bcn->limit; i++) { |
b8be63ff ID |
309 | bcn_priv = rt2x00dev->bcn->entries[i].priv_data; |
310 | if (bcn_priv->guardian_urb) | |
311 | usb_kill_urb(bcn_priv->guardian_urb); | |
330e3f95 | 312 | } |
95ea3627 ID |
313 | } |
314 | EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio); | |
315 | ||
316 | /* | |
317 | * Device initialization handlers. | |
318 | */ | |
837e7f24 | 319 | void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev, |
181d6902 | 320 | struct queue_entry *entry) |
837e7f24 | 321 | { |
14a3bf89 GW |
322 | struct usb_device *usb_dev = |
323 | interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); | |
b8be63ff | 324 | struct queue_entry_priv_usb *entry_priv = entry->priv_data; |
837e7f24 | 325 | |
b8be63ff | 326 | usb_fill_bulk_urb(entry_priv->urb, usb_dev, |
837e7f24 ID |
327 | usb_rcvbulkpipe(usb_dev, 1), |
328 | entry->skb->data, entry->skb->len, | |
329 | rt2x00usb_interrupt_rxdone, entry); | |
330 | ||
181d6902 | 331 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
b8be63ff | 332 | usb_submit_urb(entry_priv->urb, GFP_ATOMIC); |
837e7f24 ID |
333 | } |
334 | EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry); | |
335 | ||
336 | void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev, | |
181d6902 | 337 | struct queue_entry *entry) |
837e7f24 ID |
338 | { |
339 | entry->flags = 0; | |
340 | } | |
341 | EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry); | |
342 | ||
95ea3627 | 343 | static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev, |
181d6902 | 344 | struct data_queue *queue) |
95ea3627 | 345 | { |
b8be63ff ID |
346 | struct queue_entry_priv_usb *entry_priv; |
347 | struct queue_entry_priv_usb_bcn *bcn_priv; | |
95ea3627 ID |
348 | unsigned int i; |
349 | ||
b8be63ff ID |
350 | for (i = 0; i < queue->limit; i++) { |
351 | entry_priv = queue->entries[i].priv_data; | |
352 | entry_priv->urb = usb_alloc_urb(0, GFP_KERNEL); | |
353 | if (!entry_priv->urb) | |
354 | return -ENOMEM; | |
355 | } | |
356 | ||
95ea3627 | 357 | /* |
b8be63ff ID |
358 | * If this is not the beacon queue or |
359 | * no guardian byte was required for the beacon, | |
360 | * then we are done. | |
95ea3627 | 361 | */ |
b8be63ff ID |
362 | if (rt2x00dev->bcn != queue || |
363 | !test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)) | |
364 | return 0; | |
365 | ||
181d6902 | 366 | for (i = 0; i < queue->limit; i++) { |
b8be63ff ID |
367 | bcn_priv = queue->entries[i].priv_data; |
368 | bcn_priv->guardian_urb = usb_alloc_urb(0, GFP_KERNEL); | |
369 | if (!bcn_priv->guardian_urb) | |
95ea3627 ID |
370 | return -ENOMEM; |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static void rt2x00usb_free_urb(struct rt2x00_dev *rt2x00dev, | |
181d6902 | 377 | struct data_queue *queue) |
95ea3627 | 378 | { |
b8be63ff ID |
379 | struct queue_entry_priv_usb *entry_priv; |
380 | struct queue_entry_priv_usb_bcn *bcn_priv; | |
95ea3627 ID |
381 | unsigned int i; |
382 | ||
181d6902 | 383 | if (!queue->entries) |
95ea3627 ID |
384 | return; |
385 | ||
181d6902 | 386 | for (i = 0; i < queue->limit; i++) { |
b8be63ff ID |
387 | entry_priv = queue->entries[i].priv_data; |
388 | usb_kill_urb(entry_priv->urb); | |
389 | usb_free_urb(entry_priv->urb); | |
95ea3627 | 390 | } |
b8be63ff ID |
391 | |
392 | /* | |
393 | * If this is not the beacon queue or | |
394 | * no guardian byte was required for the beacon, | |
395 | * then we are done. | |
396 | */ | |
397 | if (rt2x00dev->bcn != queue || | |
398 | !test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)) | |
399 | return; | |
400 | ||
401 | for (i = 0; i < queue->limit; i++) { | |
402 | bcn_priv = queue->entries[i].priv_data; | |
403 | usb_kill_urb(bcn_priv->guardian_urb); | |
404 | usb_free_urb(bcn_priv->guardian_urb); | |
405 | } | |
95ea3627 ID |
406 | } |
407 | ||
408 | int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev) | |
409 | { | |
181d6902 | 410 | struct data_queue *queue; |
30caa6e3 | 411 | int status; |
95ea3627 ID |
412 | |
413 | /* | |
414 | * Allocate DMA | |
415 | */ | |
181d6902 ID |
416 | queue_for_each(rt2x00dev, queue) { |
417 | status = rt2x00usb_alloc_urb(rt2x00dev, queue); | |
95ea3627 ID |
418 | if (status) |
419 | goto exit; | |
420 | } | |
421 | ||
95ea3627 ID |
422 | return 0; |
423 | ||
424 | exit: | |
425 | rt2x00usb_uninitialize(rt2x00dev); | |
426 | ||
427 | return status; | |
428 | } | |
429 | EXPORT_SYMBOL_GPL(rt2x00usb_initialize); | |
430 | ||
431 | void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev) | |
432 | { | |
181d6902 | 433 | struct data_queue *queue; |
95ea3627 | 434 | |
181d6902 ID |
435 | queue_for_each(rt2x00dev, queue) |
436 | rt2x00usb_free_urb(rt2x00dev, queue); | |
95ea3627 ID |
437 | } |
438 | EXPORT_SYMBOL_GPL(rt2x00usb_uninitialize); | |
439 | ||
440 | /* | |
441 | * USB driver handlers. | |
442 | */ | |
443 | static void rt2x00usb_free_reg(struct rt2x00_dev *rt2x00dev) | |
444 | { | |
445 | kfree(rt2x00dev->rf); | |
446 | rt2x00dev->rf = NULL; | |
447 | ||
448 | kfree(rt2x00dev->eeprom); | |
449 | rt2x00dev->eeprom = NULL; | |
450 | ||
21795094 ID |
451 | kfree(rt2x00dev->csr.cache); |
452 | rt2x00dev->csr.cache = NULL; | |
95ea3627 ID |
453 | } |
454 | ||
455 | static int rt2x00usb_alloc_reg(struct rt2x00_dev *rt2x00dev) | |
456 | { | |
21795094 ID |
457 | rt2x00dev->csr.cache = kzalloc(CSR_CACHE_SIZE, GFP_KERNEL); |
458 | if (!rt2x00dev->csr.cache) | |
95ea3627 ID |
459 | goto exit; |
460 | ||
461 | rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL); | |
462 | if (!rt2x00dev->eeprom) | |
463 | goto exit; | |
464 | ||
465 | rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL); | |
466 | if (!rt2x00dev->rf) | |
467 | goto exit; | |
468 | ||
469 | return 0; | |
470 | ||
471 | exit: | |
472 | ERROR_PROBE("Failed to allocate registers.\n"); | |
473 | ||
474 | rt2x00usb_free_reg(rt2x00dev); | |
475 | ||
476 | return -ENOMEM; | |
477 | } | |
478 | ||
479 | int rt2x00usb_probe(struct usb_interface *usb_intf, | |
480 | const struct usb_device_id *id) | |
481 | { | |
482 | struct usb_device *usb_dev = interface_to_usbdev(usb_intf); | |
483 | struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_info; | |
484 | struct ieee80211_hw *hw; | |
485 | struct rt2x00_dev *rt2x00dev; | |
486 | int retval; | |
487 | ||
488 | usb_dev = usb_get_dev(usb_dev); | |
489 | ||
490 | hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); | |
491 | if (!hw) { | |
492 | ERROR_PROBE("Failed to allocate hardware.\n"); | |
493 | retval = -ENOMEM; | |
494 | goto exit_put_device; | |
495 | } | |
496 | ||
497 | usb_set_intfdata(usb_intf, hw); | |
498 | ||
499 | rt2x00dev = hw->priv; | |
14a3bf89 | 500 | rt2x00dev->dev = &usb_intf->dev; |
95ea3627 ID |
501 | rt2x00dev->ops = ops; |
502 | rt2x00dev->hw = hw; | |
3d82346c | 503 | mutex_init(&rt2x00dev->usb_cache_mutex); |
95ea3627 | 504 | |
b242e891 ID |
505 | rt2x00dev->usb_maxpacket = |
506 | usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1); | |
507 | if (!rt2x00dev->usb_maxpacket) | |
508 | rt2x00dev->usb_maxpacket = 1; | |
509 | ||
95ea3627 ID |
510 | retval = rt2x00usb_alloc_reg(rt2x00dev); |
511 | if (retval) | |
512 | goto exit_free_device; | |
513 | ||
514 | retval = rt2x00lib_probe_dev(rt2x00dev); | |
515 | if (retval) | |
516 | goto exit_free_reg; | |
517 | ||
518 | return 0; | |
519 | ||
520 | exit_free_reg: | |
521 | rt2x00usb_free_reg(rt2x00dev); | |
522 | ||
523 | exit_free_device: | |
524 | ieee80211_free_hw(hw); | |
525 | ||
526 | exit_put_device: | |
527 | usb_put_dev(usb_dev); | |
528 | ||
529 | usb_set_intfdata(usb_intf, NULL); | |
530 | ||
531 | return retval; | |
532 | } | |
533 | EXPORT_SYMBOL_GPL(rt2x00usb_probe); | |
534 | ||
535 | void rt2x00usb_disconnect(struct usb_interface *usb_intf) | |
536 | { | |
537 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); | |
538 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
539 | ||
540 | /* | |
541 | * Free all allocated data. | |
542 | */ | |
543 | rt2x00lib_remove_dev(rt2x00dev); | |
544 | rt2x00usb_free_reg(rt2x00dev); | |
545 | ieee80211_free_hw(hw); | |
546 | ||
547 | /* | |
548 | * Free the USB device data. | |
549 | */ | |
550 | usb_set_intfdata(usb_intf, NULL); | |
551 | usb_put_dev(interface_to_usbdev(usb_intf)); | |
552 | } | |
553 | EXPORT_SYMBOL_GPL(rt2x00usb_disconnect); | |
554 | ||
555 | #ifdef CONFIG_PM | |
556 | int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state) | |
557 | { | |
558 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); | |
559 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
560 | int retval; | |
561 | ||
562 | retval = rt2x00lib_suspend(rt2x00dev, state); | |
563 | if (retval) | |
564 | return retval; | |
565 | ||
566 | rt2x00usb_free_reg(rt2x00dev); | |
567 | ||
568 | /* | |
569 | * Decrease usbdev refcount. | |
570 | */ | |
571 | usb_put_dev(interface_to_usbdev(usb_intf)); | |
572 | ||
573 | return 0; | |
574 | } | |
575 | EXPORT_SYMBOL_GPL(rt2x00usb_suspend); | |
576 | ||
577 | int rt2x00usb_resume(struct usb_interface *usb_intf) | |
578 | { | |
579 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); | |
580 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
581 | int retval; | |
582 | ||
583 | usb_get_dev(interface_to_usbdev(usb_intf)); | |
584 | ||
585 | retval = rt2x00usb_alloc_reg(rt2x00dev); | |
586 | if (retval) | |
587 | return retval; | |
588 | ||
589 | retval = rt2x00lib_resume(rt2x00dev); | |
590 | if (retval) | |
591 | goto exit_free_reg; | |
592 | ||
593 | return 0; | |
594 | ||
595 | exit_free_reg: | |
596 | rt2x00usb_free_reg(rt2x00dev); | |
597 | ||
598 | return retval; | |
599 | } | |
600 | EXPORT_SYMBOL_GPL(rt2x00usb_resume); | |
601 | #endif /* CONFIG_PM */ | |
602 | ||
603 | /* | |
181d6902 | 604 | * rt2x00usb module information. |
95ea3627 ID |
605 | */ |
606 | MODULE_AUTHOR(DRV_PROJECT); | |
607 | MODULE_VERSION(DRV_VERSION); | |
181d6902 | 608 | MODULE_DESCRIPTION("rt2x00 usb library"); |
95ea3627 | 609 | MODULE_LICENSE("GPL"); |