rt2x00: Don't use unitialized rxdesc->size
[linux-2.6.git] / drivers / net / wireless / rt2x00 / rt2500usb.c
1 /*
2         Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
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: rt2500usb
23         Abstract: rt2500usb device specific routines.
24         Supported chipsets: RT2570.
25  */
26
27 #include <linux/delay.h>
28 #include <linux/etherdevice.h>
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/usb.h>
33
34 #include "rt2x00.h"
35 #include "rt2x00usb.h"
36 #include "rt2500usb.h"
37
38 /*
39  * Register access.
40  * All access to the CSR registers will go through the methods
41  * rt2500usb_register_read and rt2500usb_register_write.
42  * BBP and RF register require indirect register access,
43  * and use the CSR registers BBPCSR and RFCSR to achieve this.
44  * These indirect registers work with busy bits,
45  * and we will try maximal REGISTER_BUSY_COUNT times to access
46  * the register while taking a REGISTER_BUSY_DELAY us delay
47  * between each attampt. When the busy bit is still set at that time,
48  * the access attempt is considered to have failed,
49  * and we will print an error.
50  * If the usb_cache_mutex is already held then the _lock variants must
51  * be used instead.
52  */
53 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
54                                            const unsigned int offset,
55                                            u16 *value)
56 {
57         __le16 reg;
58         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
59                                       USB_VENDOR_REQUEST_IN, offset,
60                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
61         *value = le16_to_cpu(reg);
62 }
63
64 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
65                                                 const unsigned int offset,
66                                                 u16 *value)
67 {
68         __le16 reg;
69         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
70                                        USB_VENDOR_REQUEST_IN, offset,
71                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
72         *value = le16_to_cpu(reg);
73 }
74
75 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
76                                                 const unsigned int offset,
77                                                 void *value, const u16 length)
78 {
79         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
80         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
81                                       USB_VENDOR_REQUEST_IN, offset,
82                                       value, length, timeout);
83 }
84
85 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
86                                             const unsigned int offset,
87                                             u16 value)
88 {
89         __le16 reg = cpu_to_le16(value);
90         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
91                                       USB_VENDOR_REQUEST_OUT, offset,
92                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
93 }
94
95 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
96                                                  const unsigned int offset,
97                                                  u16 value)
98 {
99         __le16 reg = cpu_to_le16(value);
100         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
101                                        USB_VENDOR_REQUEST_OUT, offset,
102                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
103 }
104
105 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
106                                                  const unsigned int offset,
107                                                  void *value, const u16 length)
108 {
109         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
110         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
111                                       USB_VENDOR_REQUEST_OUT, offset,
112                                       value, length, timeout);
113 }
114
115 static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev)
116 {
117         u16 reg;
118         unsigned int i;
119
120         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
121                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR8, &reg);
122                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
123                         break;
124                 udelay(REGISTER_BUSY_DELAY);
125         }
126
127         return reg;
128 }
129
130 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
131                                 const unsigned int word, const u8 value)
132 {
133         u16 reg;
134
135         mutex_lock(&rt2x00dev->usb_cache_mutex);
136
137         /*
138          * Wait until the BBP becomes ready.
139          */
140         reg = rt2500usb_bbp_check(rt2x00dev);
141         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
142                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
143                 mutex_unlock(&rt2x00dev->usb_cache_mutex);
144                 return;
145         }
146
147         /*
148          * Write the data into the BBP.
149          */
150         reg = 0;
151         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
152         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
153         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
154
155         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
156
157         mutex_unlock(&rt2x00dev->usb_cache_mutex);
158 }
159
160 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
161                                const unsigned int word, u8 *value)
162 {
163         u16 reg;
164
165         mutex_lock(&rt2x00dev->usb_cache_mutex);
166
167         /*
168          * Wait until the BBP becomes ready.
169          */
170         reg = rt2500usb_bbp_check(rt2x00dev);
171         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
172                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
173                 return;
174         }
175
176         /*
177          * Write the request into the BBP.
178          */
179         reg = 0;
180         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
181         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
182
183         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
184
185         /*
186          * Wait until the BBP becomes ready.
187          */
188         reg = rt2500usb_bbp_check(rt2x00dev);
189         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
190                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
191                 *value = 0xff;
192                 mutex_unlock(&rt2x00dev->usb_cache_mutex);
193                 return;
194         }
195
196         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
197         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
198
199         mutex_unlock(&rt2x00dev->usb_cache_mutex);
200 }
201
202 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
203                                const unsigned int word, const u32 value)
204 {
205         u16 reg;
206         unsigned int i;
207
208         if (!word)
209                 return;
210
211         mutex_lock(&rt2x00dev->usb_cache_mutex);
212
213         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
214                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR10, &reg);
215                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
216                         goto rf_write;
217                 udelay(REGISTER_BUSY_DELAY);
218         }
219
220         mutex_unlock(&rt2x00dev->usb_cache_mutex);
221         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
222         return;
223
224 rf_write:
225         reg = 0;
226         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
227         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
228
229         reg = 0;
230         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
231         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
232         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
233         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
234
235         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
236         rt2x00_rf_write(rt2x00dev, word, value);
237
238         mutex_unlock(&rt2x00dev->usb_cache_mutex);
239 }
240
241 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
242 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
243
244 static void rt2500usb_read_csr(struct rt2x00_dev *rt2x00dev,
245                                const unsigned int word, u32 *data)
246 {
247         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
248 }
249
250 static void rt2500usb_write_csr(struct rt2x00_dev *rt2x00dev,
251                                 const unsigned int word, u32 data)
252 {
253         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
254 }
255
256 static const struct rt2x00debug rt2500usb_rt2x00debug = {
257         .owner  = THIS_MODULE,
258         .csr    = {
259                 .read           = rt2500usb_read_csr,
260                 .write          = rt2500usb_write_csr,
261                 .word_size      = sizeof(u16),
262                 .word_count     = CSR_REG_SIZE / sizeof(u16),
263         },
264         .eeprom = {
265                 .read           = rt2x00_eeprom_read,
266                 .write          = rt2x00_eeprom_write,
267                 .word_size      = sizeof(u16),
268                 .word_count     = EEPROM_SIZE / sizeof(u16),
269         },
270         .bbp    = {
271                 .read           = rt2500usb_bbp_read,
272                 .write          = rt2500usb_bbp_write,
273                 .word_size      = sizeof(u8),
274                 .word_count     = BBP_SIZE / sizeof(u8),
275         },
276         .rf     = {
277                 .read           = rt2x00_rf_read,
278                 .write          = rt2500usb_rf_write,
279                 .word_size      = sizeof(u32),
280                 .word_count     = RF_SIZE / sizeof(u32),
281         },
282 };
283 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
284
285 #ifdef CONFIG_RT2500USB_LEDS
286 static void rt2500usb_led_brightness(struct led_classdev *led_cdev,
287                                      enum led_brightness brightness)
288 {
289         struct rt2x00_led *led =
290             container_of(led_cdev, struct rt2x00_led, led_dev);
291         unsigned int enabled = brightness != LED_OFF;
292         unsigned int activity =
293             led->rt2x00dev->led_flags & LED_SUPPORT_ACTIVITY;
294
295         if (in_atomic()) {
296                 NOTICE(led->rt2x00dev,
297                        "Ignoring LED brightness command for led %d", led->type);
298                 return;
299         }
300
301         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC) {
302                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
303                                    MAC_CSR20_LINK, enabled);
304                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
305                                    MAC_CSR20_ACTIVITY, enabled && activity);
306         }
307
308         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20,
309                                  led->rt2x00dev->led_mcu_reg);
310 }
311 #else
312 #define rt2500usb_led_brightness        NULL
313 #endif /* CONFIG_RT2500USB_LEDS */
314
315 /*
316  * Configuration handlers.
317  */
318 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
319                                   struct rt2x00_intf *intf,
320                                   struct rt2x00intf_conf *conf,
321                                   const unsigned int flags)
322 {
323         unsigned int bcn_preload;
324         u16 reg;
325
326         if (flags & CONFIG_UPDATE_TYPE) {
327                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
328
329                 /*
330                  * Enable beacon config
331                  */
332                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
333                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
334                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
335                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
336                                    2 * (conf->type != IEEE80211_IF_TYPE_STA));
337                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
338
339                 /*
340                  * Enable synchronisation.
341                  */
342                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
343                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
344                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
345
346                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
347                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
348                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN,
349                                    (conf->sync == TSF_SYNC_BEACON));
350                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
351                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
352                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
353         }
354
355         if (flags & CONFIG_UPDATE_MAC)
356                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
357                                               (3 * sizeof(__le16)));
358
359         if (flags & CONFIG_UPDATE_BSSID)
360                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
361                                               (3 * sizeof(__le16)));
362 }
363
364 static int rt2500usb_config_preamble(struct rt2x00_dev *rt2x00dev,
365                                      const int short_preamble,
366                                      const int ack_timeout,
367                                      const int ack_consume_time)
368 {
369         u16 reg;
370
371         /*
372          * When in atomic context, we should let rt2x00lib
373          * try this configuration again later.
374          */
375         if (in_atomic())
376                 return -EAGAIN;
377
378         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
379         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, ack_timeout);
380         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
381
382         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
383         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
384                            !!short_preamble);
385         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
386
387         return 0;
388 }
389
390 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
391                                      const int basic_rate_mask)
392 {
393         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
394 }
395
396 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
397                                      struct rf_channel *rf, const int txpower)
398 {
399         /*
400          * Set TXpower.
401          */
402         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
403
404         /*
405          * For RT2525E we should first set the channel to half band higher.
406          */
407         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
408                 static const u32 vals[] = {
409                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
410                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
411                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
412                         0x00000902, 0x00000906
413                 };
414
415                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
416                 if (rf->rf4)
417                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
418         }
419
420         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
421         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
422         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
423         if (rf->rf4)
424                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
425 }
426
427 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
428                                      const int txpower)
429 {
430         u32 rf3;
431
432         rt2x00_rf_read(rt2x00dev, 3, &rf3);
433         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
434         rt2500usb_rf_write(rt2x00dev, 3, rf3);
435 }
436
437 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
438                                      struct antenna_setup *ant)
439 {
440         u8 r2;
441         u8 r14;
442         u16 csr5;
443         u16 csr6;
444
445         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
446         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
447         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
448         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
449
450         /*
451          * Configure the TX antenna.
452          */
453         switch (ant->tx) {
454         case ANTENNA_HW_DIVERSITY:
455                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
456                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
457                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
458                 break;
459         case ANTENNA_A:
460                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
461                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
462                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
463                 break;
464         case ANTENNA_SW_DIVERSITY:
465                 /*
466                  * NOTE: We should never come here because rt2x00lib is
467                  * supposed to catch this and send us the correct antenna
468                  * explicitely. However we are nog going to bug about this.
469                  * Instead, just default to antenna B.
470                  */
471         case ANTENNA_B:
472                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
473                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
474                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
475                 break;
476         }
477
478         /*
479          * Configure the RX antenna.
480          */
481         switch (ant->rx) {
482         case ANTENNA_HW_DIVERSITY:
483                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
484                 break;
485         case ANTENNA_A:
486                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
487                 break;
488         case ANTENNA_SW_DIVERSITY:
489                 /*
490                  * NOTE: We should never come here because rt2x00lib is
491                  * supposed to catch this and send us the correct antenna
492                  * explicitely. However we are nog going to bug about this.
493                  * Instead, just default to antenna B.
494                  */
495         case ANTENNA_B:
496                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
497                 break;
498         }
499
500         /*
501          * RT2525E and RT5222 need to flip TX I/Q
502          */
503         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
504             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
505                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
506                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
507                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
508
509                 /*
510                  * RT2525E does not need RX I/Q Flip.
511                  */
512                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
513                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
514         } else {
515                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
516                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
517         }
518
519         rt2500usb_bbp_write(rt2x00dev, 2, r2);
520         rt2500usb_bbp_write(rt2x00dev, 14, r14);
521         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
522         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
523 }
524
525 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
526                                       struct rt2x00lib_conf *libconf)
527 {
528         u16 reg;
529
530         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
531         rt2500usb_register_write(rt2x00dev, MAC_CSR11, libconf->sifs);
532         rt2500usb_register_write(rt2x00dev, MAC_CSR12, libconf->eifs);
533
534         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
535         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
536                            libconf->conf->beacon_int * 4);
537         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
538 }
539
540 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
541                              struct rt2x00lib_conf *libconf,
542                              const unsigned int flags)
543 {
544         if (flags & CONFIG_UPDATE_PHYMODE)
545                 rt2500usb_config_phymode(rt2x00dev, libconf->basic_rates);
546         if (flags & CONFIG_UPDATE_CHANNEL)
547                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
548                                          libconf->conf->power_level);
549         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
550                 rt2500usb_config_txpower(rt2x00dev,
551                                          libconf->conf->power_level);
552         if (flags & CONFIG_UPDATE_ANTENNA)
553                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
554         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
555                 rt2500usb_config_duration(rt2x00dev, libconf);
556 }
557
558 /*
559  * Link tuning
560  */
561 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
562                                  struct link_qual *qual)
563 {
564         u16 reg;
565
566         /*
567          * Update FCS error count from register.
568          */
569         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
570         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
571
572         /*
573          * Update False CCA count from register.
574          */
575         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
576         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
577 }
578
579 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
580 {
581         u16 eeprom;
582         u16 value;
583
584         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
585         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
586         rt2500usb_bbp_write(rt2x00dev, 24, value);
587
588         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
589         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
590         rt2500usb_bbp_write(rt2x00dev, 25, value);
591
592         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
593         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
594         rt2500usb_bbp_write(rt2x00dev, 61, value);
595
596         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
597         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
598         rt2500usb_bbp_write(rt2x00dev, 17, value);
599
600         rt2x00dev->link.vgc_level = value;
601 }
602
603 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
604 {
605         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
606         u16 bbp_thresh;
607         u16 vgc_bound;
608         u16 sens;
609         u16 r24;
610         u16 r25;
611         u16 r61;
612         u16 r17_sens;
613         u8 r17;
614         u8 up_bound;
615         u8 low_bound;
616
617         /*
618          * Read current r17 value, as well as the sensitivity values
619          * for the r17 register.
620          */
621         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
622         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
623
624         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
625         up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
626         low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
627
628         /*
629          * If we are not associated, we should go straight to the
630          * dynamic CCA tuning.
631          */
632         if (!rt2x00dev->intf_associated)
633                 goto dynamic_cca_tune;
634
635         /*
636          * Determine the BBP tuning threshold and correctly
637          * set BBP 24, 25 and 61.
638          */
639         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
640         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
641
642         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
643         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
644         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
645
646         if ((rssi + bbp_thresh) > 0) {
647                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
648                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
649                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
650         } else {
651                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
652                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
653                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
654         }
655
656         rt2500usb_bbp_write(rt2x00dev, 24, r24);
657         rt2500usb_bbp_write(rt2x00dev, 25, r25);
658         rt2500usb_bbp_write(rt2x00dev, 61, r61);
659
660         /*
661          * A too low RSSI will cause too much false CCA which will
662          * then corrupt the R17 tuning. To remidy this the tuning should
663          * be stopped (While making sure the R17 value will not exceed limits)
664          */
665         if (rssi >= -40) {
666                 if (r17 != 0x60)
667                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
668                 return;
669         }
670
671         /*
672          * Special big-R17 for short distance
673          */
674         if (rssi >= -58) {
675                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
676                 if (r17 != sens)
677                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
678                 return;
679         }
680
681         /*
682          * Special mid-R17 for middle distance
683          */
684         if (rssi >= -74) {
685                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
686                 if (r17 != sens)
687                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
688                 return;
689         }
690
691         /*
692          * Leave short or middle distance condition, restore r17
693          * to the dynamic tuning range.
694          */
695         low_bound = 0x32;
696         if (rssi < -77)
697                 up_bound -= (-77 - rssi);
698
699         if (up_bound < low_bound)
700                 up_bound = low_bound;
701
702         if (r17 > up_bound) {
703                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
704                 rt2x00dev->link.vgc_level = up_bound;
705                 return;
706         }
707
708 dynamic_cca_tune:
709
710         /*
711          * R17 is inside the dynamic tuning range,
712          * start tuning the link based on the false cca counter.
713          */
714         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
715                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
716                 rt2x00dev->link.vgc_level = r17;
717         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
718                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
719                 rt2x00dev->link.vgc_level = r17;
720         }
721 }
722
723 /*
724  * Initialization functions.
725  */
726 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
727 {
728         u16 reg;
729
730         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
731                                     USB_MODE_TEST, REGISTER_TIMEOUT);
732         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
733                                     0x00f0, REGISTER_TIMEOUT);
734
735         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
736         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
737         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
738
739         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
740         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
741
742         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
743         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
744         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
745         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
746         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
747
748         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
749         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
750         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
751         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
752         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
753
754         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
755         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
756         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
757         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
758
759         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
760         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
761         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
762         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
763         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
764         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
765
766         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
767         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
768         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
769         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
770         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
771         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
772
773         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
774         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
775         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
776         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
777         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
778         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
779
780         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
781         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
782         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
783         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
784         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
785         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
786
787         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
788         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
789
790         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
791                 return -EBUSY;
792
793         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
794         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
795         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
796         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
797         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
798
799         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
800                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
801                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
802         } else {
803                 reg = 0;
804                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
805                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
806         }
807         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
808
809         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
810         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
811         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
812         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
813
814         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
815         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
816                            rt2x00dev->rx->data_size);
817         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
818
819         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
820         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
821         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
822         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
823
824         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
825         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
826         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
827
828         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
829         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
830         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
831
832         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
833         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
834         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
835
836         return 0;
837 }
838
839 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
840 {
841         unsigned int i;
842         u16 eeprom;
843         u8 value;
844         u8 reg_id;
845
846         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
847                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
848                 if ((value != 0xff) && (value != 0x00))
849                         goto continue_csr_init;
850                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
851                 udelay(REGISTER_BUSY_DELAY);
852         }
853
854         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
855         return -EACCES;
856
857 continue_csr_init:
858         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
859         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
860         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
861         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
862         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
863         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
864         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
865         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
866         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
867         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
868         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
869         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
870         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
871         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
872         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
873         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
874         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
875         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
876         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
877         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
878         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
879         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
880         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
881         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
882         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
883         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
884         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
885         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
886         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
887         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
888         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
889
890         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
891                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
892
893                 if (eeprom != 0xffff && eeprom != 0x0000) {
894                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
895                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
896                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
897                 }
898         }
899
900         return 0;
901 }
902
903 /*
904  * Device state switch handlers.
905  */
906 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
907                                 enum dev_state state)
908 {
909         u16 reg;
910
911         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
912         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
913                            state == STATE_RADIO_RX_OFF);
914         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
915 }
916
917 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
918 {
919         /*
920          * Initialize all registers.
921          */
922         if (rt2500usb_init_registers(rt2x00dev) ||
923             rt2500usb_init_bbp(rt2x00dev)) {
924                 ERROR(rt2x00dev, "Register initialization failed.\n");
925                 return -EIO;
926         }
927
928         return 0;
929 }
930
931 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
932 {
933         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
934         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
935
936         /*
937          * Disable synchronisation.
938          */
939         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
940
941         rt2x00usb_disable_radio(rt2x00dev);
942 }
943
944 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
945                                enum dev_state state)
946 {
947         u16 reg;
948         u16 reg2;
949         unsigned int i;
950         char put_to_sleep;
951         char bbp_state;
952         char rf_state;
953
954         put_to_sleep = (state != STATE_AWAKE);
955
956         reg = 0;
957         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
958         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
959         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
960         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
961         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
962         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
963
964         /*
965          * Device is not guaranteed to be in the requested state yet.
966          * We must wait until the register indicates that the
967          * device has entered the correct state.
968          */
969         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
970                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
971                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
972                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
973                 if (bbp_state == state && rf_state == state)
974                         return 0;
975                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
976                 msleep(30);
977         }
978
979         NOTICE(rt2x00dev, "Device failed to enter state %d, "
980                "current device state: bbp %d and rf %d.\n",
981                state, bbp_state, rf_state);
982
983         return -EBUSY;
984 }
985
986 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
987                                       enum dev_state state)
988 {
989         int retval = 0;
990
991         switch (state) {
992         case STATE_RADIO_ON:
993                 retval = rt2500usb_enable_radio(rt2x00dev);
994                 break;
995         case STATE_RADIO_OFF:
996                 rt2500usb_disable_radio(rt2x00dev);
997                 break;
998         case STATE_RADIO_RX_ON:
999         case STATE_RADIO_RX_ON_LINK:
1000                 rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
1001                 break;
1002         case STATE_RADIO_RX_OFF:
1003         case STATE_RADIO_RX_OFF_LINK:
1004                 rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
1005                 break;
1006         case STATE_DEEP_SLEEP:
1007         case STATE_SLEEP:
1008         case STATE_STANDBY:
1009         case STATE_AWAKE:
1010                 retval = rt2500usb_set_state(rt2x00dev, state);
1011                 break;
1012         default:
1013                 retval = -ENOTSUPP;
1014                 break;
1015         }
1016
1017         return retval;
1018 }
1019
1020 /*
1021  * TX descriptor initialization
1022  */
1023 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1024                                     struct sk_buff *skb,
1025                                     struct txentry_desc *txdesc,
1026                                     struct ieee80211_tx_control *control)
1027 {
1028         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1029         __le32 *txd = skbdesc->desc;
1030         u32 word;
1031
1032         /*
1033          * Start writing the descriptor words.
1034          */
1035         rt2x00_desc_read(txd, 1, &word);
1036         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1037         rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1038         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1039         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1040         rt2x00_desc_write(txd, 1, word);
1041
1042         rt2x00_desc_read(txd, 2, &word);
1043         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1044         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1045         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1046         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1047         rt2x00_desc_write(txd, 2, word);
1048
1049         rt2x00_desc_read(txd, 0, &word);
1050         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1051         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1052                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1053         rt2x00_set_field32(&word, TXD_W0_ACK,
1054                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1055         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1056                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1057         rt2x00_set_field32(&word, TXD_W0_OFDM,
1058                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1059         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1060                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1061         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1062         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
1063         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1064         rt2x00_desc_write(txd, 0, word);
1065 }
1066
1067 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1068                                      struct sk_buff *skb)
1069 {
1070         int length;
1071
1072         /*
1073          * The length _must_ be a multiple of 2,
1074          * but it must _not_ be a multiple of the USB packet size.
1075          */
1076         length = roundup(skb->len, 2);
1077         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1078
1079         return length;
1080 }
1081
1082 /*
1083  * TX data initialization
1084  */
1085 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1086                                     const unsigned int queue)
1087 {
1088         u16 reg;
1089
1090         if (queue != RT2X00_BCN_QUEUE_BEACON)
1091                 return;
1092
1093         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1094         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1095                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1096                 /*
1097                  * Beacon generation will fail initially.
1098                  * To prevent this we need to register the TXRX_CSR19
1099                  * register several times.
1100                  */
1101                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1102                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1103                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1104                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1105                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1106         }
1107 }
1108
1109 /*
1110  * RX control handlers
1111  */
1112 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1113                                   struct rxdone_entry_desc *rxdesc)
1114 {
1115         struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data;
1116         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1117         __le32 *rxd =
1118             (__le32 *)(entry->skb->data +
1119                        (priv_rx->urb->actual_length - entry->queue->desc_size));
1120         unsigned int offset = entry->queue->desc_size + 2;
1121         u32 word0;
1122         u32 word1;
1123
1124         /*
1125          * Copy descriptor to the available headroom inside the skbuffer.
1126          */
1127         skb_push(entry->skb, offset);
1128         memcpy(entry->skb->data, rxd, entry->queue->desc_size);
1129         rxd = (__le32 *)entry->skb->data;
1130
1131         /*
1132          * The descriptor is now aligned to 4 bytes and thus it is
1133          * now safe to read it on all architectures.
1134          */
1135         rt2x00_desc_read(rxd, 0, &word0);
1136         rt2x00_desc_read(rxd, 1, &word1);
1137
1138         rxdesc->flags = 0;
1139         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1140                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1141         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1142                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1143
1144         /*
1145          * Obtain the status about this packet.
1146          */
1147         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1148         rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1149             entry->queue->rt2x00dev->rssi_offset;
1150         rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1151         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1152         rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
1153
1154         /*
1155          * Adjust the skb memory window to the frame boundaries.
1156          */
1157         skb_pull(entry->skb, offset);
1158         skb_trim(entry->skb, rxdesc->size);
1159
1160         /*
1161          * Set descriptor and data pointer.
1162          */
1163         skbdesc->data = entry->skb->data;
1164         skbdesc->data_len = rxdesc->size;
1165         skbdesc->desc = rxd;
1166         skbdesc->desc_len = entry->queue->desc_size;
1167 }
1168
1169 /*
1170  * Interrupt functions.
1171  */
1172 static void rt2500usb_beacondone(struct urb *urb)
1173 {
1174         struct queue_entry *entry = (struct queue_entry *)urb->context;
1175         struct queue_entry_priv_usb_bcn *priv_bcn = entry->priv_data;
1176
1177         if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1178                 return;
1179
1180         /*
1181          * Check if this was the guardian beacon,
1182          * if that was the case we need to send the real beacon now.
1183          * Otherwise we should free the sk_buffer, the device
1184          * should be doing the rest of the work now.
1185          */
1186         if (priv_bcn->guardian_urb == urb) {
1187                 usb_submit_urb(priv_bcn->urb, GFP_ATOMIC);
1188         } else if (priv_bcn->urb == urb) {
1189                 dev_kfree_skb(entry->skb);
1190                 entry->skb = NULL;
1191         }
1192 }
1193
1194 /*
1195  * Device probe functions.
1196  */
1197 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1198 {
1199         u16 word;
1200         u8 *mac;
1201         u8 bbp;
1202
1203         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1204
1205         /*
1206          * Start validation of the data that has been read.
1207          */
1208         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1209         if (!is_valid_ether_addr(mac)) {
1210                 DECLARE_MAC_BUF(macbuf);
1211
1212                 random_ether_addr(mac);
1213                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1214         }
1215
1216         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1217         if (word == 0xffff) {
1218                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1219                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1220                                    ANTENNA_SW_DIVERSITY);
1221                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1222                                    ANTENNA_SW_DIVERSITY);
1223                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1224                                    LED_MODE_DEFAULT);
1225                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1226                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1227                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1228                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1229                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1230         }
1231
1232         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1233         if (word == 0xffff) {
1234                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1235                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1236                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1237                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1238                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1239         }
1240
1241         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1242         if (word == 0xffff) {
1243                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1244                                    DEFAULT_RSSI_OFFSET);
1245                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1246                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1247         }
1248
1249         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1250         if (word == 0xffff) {
1251                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1252                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1253                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1254         }
1255
1256         /*
1257          * Switch lower vgc bound to current BBP R17 value,
1258          * lower the value a bit for better quality.
1259          */
1260         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1261         bbp -= 6;
1262
1263         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1264         if (word == 0xffff) {
1265                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1266                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1267                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1268                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1269         }
1270
1271         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1272         if (word == 0xffff) {
1273                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1274                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1275                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1276                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1277         } else {
1278                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1279                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1280         }
1281
1282         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1283         if (word == 0xffff) {
1284                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1285                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1286                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1287                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1288         }
1289
1290         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1291         if (word == 0xffff) {
1292                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1293                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1294                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1295                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1296         }
1297
1298         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1299         if (word == 0xffff) {
1300                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1301                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1302                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1303                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1304         }
1305
1306         return 0;
1307 }
1308
1309 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1310 {
1311         u16 reg;
1312         u16 value;
1313         u16 eeprom;
1314
1315         /*
1316          * Read EEPROM word for configuration.
1317          */
1318         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1319
1320         /*
1321          * Identify RF chipset.
1322          */
1323         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1324         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1325         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1326
1327         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1328                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1329                 return -ENODEV;
1330         }
1331
1332         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1333             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1334             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1335             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1336             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1337             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1338                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1339                 return -ENODEV;
1340         }
1341
1342         /*
1343          * Identify default antenna configuration.
1344          */
1345         rt2x00dev->default_ant.tx =
1346             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1347         rt2x00dev->default_ant.rx =
1348             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1349
1350         /*
1351          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1352          * I am not 100% sure about this, but the legacy drivers do not
1353          * indicate antenna swapping in software is required when
1354          * diversity is enabled.
1355          */
1356         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1357                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1358         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1359                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1360
1361         /*
1362          * Store led mode, for correct led behaviour.
1363          */
1364 #ifdef CONFIG_RT2500USB_LEDS
1365         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1366
1367         switch (value) {
1368         case LED_MODE_ASUS:
1369         case LED_MODE_ALPHA:
1370         case LED_MODE_DEFAULT:
1371                 rt2x00dev->led_flags = LED_SUPPORT_RADIO;
1372                 break;
1373         case LED_MODE_TXRX_ACTIVITY:
1374                 rt2x00dev->led_flags =
1375                     LED_SUPPORT_RADIO | LED_SUPPORT_ACTIVITY;
1376                 break;
1377         case LED_MODE_SIGNAL_STRENGTH:
1378                 rt2x00dev->led_flags = LED_SUPPORT_RADIO;
1379                 break;
1380         }
1381
1382         /*
1383          * Store the current led register value, we need it later
1384          * in set_brightness but that is called in irq context which
1385          * means we can't use rt2500usb_register_read() at that time.
1386          */
1387         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &rt2x00dev->led_mcu_reg);
1388 #endif /* CONFIG_RT2500USB_LEDS */
1389
1390         /*
1391          * Check if the BBP tuning should be disabled.
1392          */
1393         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1394         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1395                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1396
1397         /*
1398          * Read the RSSI <-> dBm offset information.
1399          */
1400         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1401         rt2x00dev->rssi_offset =
1402             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1403
1404         return 0;
1405 }
1406
1407 /*
1408  * RF value list for RF2522
1409  * Supports: 2.4 GHz
1410  */
1411 static const struct rf_channel rf_vals_bg_2522[] = {
1412         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1413         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1414         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1415         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1416         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1417         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1418         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1419         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1420         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1421         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1422         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1423         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1424         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1425         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1426 };
1427
1428 /*
1429  * RF value list for RF2523
1430  * Supports: 2.4 GHz
1431  */
1432 static const struct rf_channel rf_vals_bg_2523[] = {
1433         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1434         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1435         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1436         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1437         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1438         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1439         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1440         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1441         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1442         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1443         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1444         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1445         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1446         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1447 };
1448
1449 /*
1450  * RF value list for RF2524
1451  * Supports: 2.4 GHz
1452  */
1453 static const struct rf_channel rf_vals_bg_2524[] = {
1454         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1455         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1456         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1457         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1458         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1459         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1460         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1461         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1462         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1463         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1464         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1465         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1466         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1467         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1468 };
1469
1470 /*
1471  * RF value list for RF2525
1472  * Supports: 2.4 GHz
1473  */
1474 static const struct rf_channel rf_vals_bg_2525[] = {
1475         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1476         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1477         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1478         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1479         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1480         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1481         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1482         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1483         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1484         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1485         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1486         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1487         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1488         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1489 };
1490
1491 /*
1492  * RF value list for RF2525e
1493  * Supports: 2.4 GHz
1494  */
1495 static const struct rf_channel rf_vals_bg_2525e[] = {
1496         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1497         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1498         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1499         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1500         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1501         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1502         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1503         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1504         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1505         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1506         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1507         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1508         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1509         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1510 };
1511
1512 /*
1513  * RF value list for RF5222
1514  * Supports: 2.4 GHz & 5.2 GHz
1515  */
1516 static const struct rf_channel rf_vals_5222[] = {
1517         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1518         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1519         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1520         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1521         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1522         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1523         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1524         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1525         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1526         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1527         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1528         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1529         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1530         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1531
1532         /* 802.11 UNI / HyperLan 2 */
1533         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1534         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1535         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1536         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1537         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1538         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1539         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1540         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1541
1542         /* 802.11 HyperLan 2 */
1543         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1544         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1545         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1546         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1547         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1548         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1549         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1550         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1551         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1552         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1553
1554         /* 802.11 UNII */
1555         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1556         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1557         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1558         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1559         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1560 };
1561
1562 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1563 {
1564         struct hw_mode_spec *spec = &rt2x00dev->spec;
1565         u8 *txpower;
1566         unsigned int i;
1567
1568         /*
1569          * Initialize all hw fields.
1570          */
1571         rt2x00dev->hw->flags =
1572             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1573             IEEE80211_HW_RX_INCLUDES_FCS |
1574             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1575         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1576         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1577         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1578         rt2x00dev->hw->queues = 2;
1579
1580         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1581         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1582                                 rt2x00_eeprom_addr(rt2x00dev,
1583                                                    EEPROM_MAC_ADDR_0));
1584
1585         /*
1586          * Convert tx_power array in eeprom.
1587          */
1588         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1589         for (i = 0; i < 14; i++)
1590                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1591
1592         /*
1593          * Initialize hw_mode information.
1594          */
1595         spec->supported_bands = SUPPORT_BAND_2GHZ;
1596         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1597         spec->tx_power_a = NULL;
1598         spec->tx_power_bg = txpower;
1599         spec->tx_power_default = DEFAULT_TXPOWER;
1600
1601         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1602                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1603                 spec->channels = rf_vals_bg_2522;
1604         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1605                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1606                 spec->channels = rf_vals_bg_2523;
1607         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1608                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1609                 spec->channels = rf_vals_bg_2524;
1610         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1611                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1612                 spec->channels = rf_vals_bg_2525;
1613         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1614                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1615                 spec->channels = rf_vals_bg_2525e;
1616         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1617                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1618                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1619                 spec->channels = rf_vals_5222;
1620         }
1621 }
1622
1623 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1624 {
1625         int retval;
1626
1627         /*
1628          * Allocate eeprom data.
1629          */
1630         retval = rt2500usb_validate_eeprom(rt2x00dev);
1631         if (retval)
1632                 return retval;
1633
1634         retval = rt2500usb_init_eeprom(rt2x00dev);
1635         if (retval)
1636                 return retval;
1637
1638         /*
1639          * Initialize hw specifications.
1640          */
1641         rt2500usb_probe_hw_mode(rt2x00dev);
1642
1643         /*
1644          * This device requires the atim queue
1645          */
1646         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1647         __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1648
1649         /*
1650          * Set the rssi offset.
1651          */
1652         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1653
1654         return 0;
1655 }
1656
1657 /*
1658  * IEEE80211 stack callback functions.
1659  */
1660 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1661                                        unsigned int changed_flags,
1662                                        unsigned int *total_flags,
1663                                        int mc_count,
1664                                        struct dev_addr_list *mc_list)
1665 {
1666         struct rt2x00_dev *rt2x00dev = hw->priv;
1667         u16 reg;
1668
1669         /*
1670          * Mask off any flags we are going to ignore from
1671          * the total_flags field.
1672          */
1673         *total_flags &=
1674             FIF_ALLMULTI |
1675             FIF_FCSFAIL |
1676             FIF_PLCPFAIL |
1677             FIF_CONTROL |
1678             FIF_OTHER_BSS |
1679             FIF_PROMISC_IN_BSS;
1680
1681         /*
1682          * Apply some rules to the filters:
1683          * - Some filters imply different filters to be set.
1684          * - Some things we can't filter out at all.
1685          */
1686         if (mc_count)
1687                 *total_flags |= FIF_ALLMULTI;
1688         if (*total_flags & FIF_OTHER_BSS ||
1689             *total_flags & FIF_PROMISC_IN_BSS)
1690                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1691
1692         /*
1693          * Check if there is any work left for us.
1694          */
1695         if (rt2x00dev->packet_filter == *total_flags)
1696                 return;
1697         rt2x00dev->packet_filter = *total_flags;
1698
1699         /*
1700          * When in atomic context, reschedule and let rt2x00lib
1701          * call this function again.
1702          */
1703         if (in_atomic()) {
1704                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1705                 return;
1706         }
1707
1708         /*
1709          * Start configuration steps.
1710          * Note that the version error will always be dropped
1711          * and broadcast frames will always be accepted since
1712          * there is no filter for it at this time.
1713          */
1714         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1715         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1716                            !(*total_flags & FIF_FCSFAIL));
1717         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1718                            !(*total_flags & FIF_PLCPFAIL));
1719         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1720                            !(*total_flags & FIF_CONTROL));
1721         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1722                            !(*total_flags & FIF_PROMISC_IN_BSS));
1723         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1724                            !(*total_flags & FIF_PROMISC_IN_BSS));
1725         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1726         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1727                            !(*total_flags & FIF_ALLMULTI));
1728         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1729         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1730 }
1731
1732 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1733                                    struct sk_buff *skb,
1734                                    struct ieee80211_tx_control *control)
1735 {
1736         struct rt2x00_dev *rt2x00dev = hw->priv;
1737         struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
1738         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1739         struct queue_entry_priv_usb_bcn *priv_bcn;
1740         struct skb_frame_desc *skbdesc;
1741         int pipe = usb_sndbulkpipe(usb_dev, 1);
1742         int length;
1743
1744         if (unlikely(!intf->beacon))
1745                 return -ENOBUFS;
1746
1747         priv_bcn = intf->beacon->priv_data;
1748
1749         /*
1750          * Add the descriptor in front of the skb.
1751          */
1752         skb_push(skb, intf->beacon->queue->desc_size);
1753         memset(skb->data, 0, intf->beacon->queue->desc_size);
1754
1755         /*
1756          * Fill in skb descriptor
1757          */
1758         skbdesc = get_skb_frame_desc(skb);
1759         memset(skbdesc, 0, sizeof(*skbdesc));
1760         skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
1761         skbdesc->data = skb->data + intf->beacon->queue->desc_size;
1762         skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
1763         skbdesc->desc = skb->data;
1764         skbdesc->desc_len = intf->beacon->queue->desc_size;
1765         skbdesc->entry = intf->beacon;
1766
1767         /*
1768          * mac80211 doesn't provide the control->queue variable
1769          * for beacons. Set our own queue identification so
1770          * it can be used during descriptor initialization.
1771          */
1772         control->queue = RT2X00_BCN_QUEUE_BEACON;
1773         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
1774
1775         /*
1776          * USB devices cannot blindly pass the skb->len as the
1777          * length of the data to usb_fill_bulk_urb. Pass the skb
1778          * to the driver to determine what the length should be.
1779          */
1780         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1781
1782         usb_fill_bulk_urb(priv_bcn->urb, usb_dev, pipe,
1783                           skb->data, length, rt2500usb_beacondone,
1784                           intf->beacon);
1785
1786         /*
1787          * Second we need to create the guardian byte.
1788          * We only need a single byte, so lets recycle
1789          * the 'flags' field we are not using for beacons.
1790          */
1791         priv_bcn->guardian_data = 0;
1792         usb_fill_bulk_urb(priv_bcn->guardian_urb, usb_dev, pipe,
1793                           &priv_bcn->guardian_data, 1, rt2500usb_beacondone,
1794                           intf->beacon);
1795
1796         /*
1797          * Send out the guardian byte.
1798          */
1799         usb_submit_urb(priv_bcn->guardian_urb, GFP_ATOMIC);
1800
1801         /*
1802          * Enable beacon generation.
1803          */
1804         rt2500usb_kick_tx_queue(rt2x00dev, control->queue);
1805
1806         return 0;
1807 }
1808
1809 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1810         .tx                     = rt2x00mac_tx,
1811         .start                  = rt2x00mac_start,
1812         .stop                   = rt2x00mac_stop,
1813         .add_interface          = rt2x00mac_add_interface,
1814         .remove_interface       = rt2x00mac_remove_interface,
1815         .config                 = rt2x00mac_config,
1816         .config_interface       = rt2x00mac_config_interface,
1817         .configure_filter       = rt2500usb_configure_filter,
1818         .get_stats              = rt2x00mac_get_stats,
1819         .bss_info_changed       = rt2x00mac_bss_info_changed,
1820         .conf_tx                = rt2x00mac_conf_tx,
1821         .get_tx_stats           = rt2x00mac_get_tx_stats,
1822         .beacon_update          = rt2500usb_beacon_update,
1823 };
1824
1825 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1826         .probe_hw               = rt2500usb_probe_hw,
1827         .initialize             = rt2x00usb_initialize,
1828         .uninitialize           = rt2x00usb_uninitialize,
1829         .init_rxentry           = rt2x00usb_init_rxentry,
1830         .init_txentry           = rt2x00usb_init_txentry,
1831         .set_device_state       = rt2500usb_set_device_state,
1832         .link_stats             = rt2500usb_link_stats,
1833         .reset_tuner            = rt2500usb_reset_tuner,
1834         .link_tuner             = rt2500usb_link_tuner,
1835         .led_brightness         = rt2500usb_led_brightness,
1836         .write_tx_desc          = rt2500usb_write_tx_desc,
1837         .write_tx_data          = rt2x00usb_write_tx_data,
1838         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1839         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1840         .fill_rxdone            = rt2500usb_fill_rxdone,
1841         .config_intf            = rt2500usb_config_intf,
1842         .config_preamble        = rt2500usb_config_preamble,
1843         .config                 = rt2500usb_config,
1844 };
1845
1846 static const struct data_queue_desc rt2500usb_queue_rx = {
1847         .entry_num              = RX_ENTRIES,
1848         .data_size              = DATA_FRAME_SIZE,
1849         .desc_size              = RXD_DESC_SIZE,
1850         .priv_size              = sizeof(struct queue_entry_priv_usb_rx),
1851 };
1852
1853 static const struct data_queue_desc rt2500usb_queue_tx = {
1854         .entry_num              = TX_ENTRIES,
1855         .data_size              = DATA_FRAME_SIZE,
1856         .desc_size              = TXD_DESC_SIZE,
1857         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
1858 };
1859
1860 static const struct data_queue_desc rt2500usb_queue_bcn = {
1861         .entry_num              = BEACON_ENTRIES,
1862         .data_size              = MGMT_FRAME_SIZE,
1863         .desc_size              = TXD_DESC_SIZE,
1864         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1865 };
1866
1867 static const struct data_queue_desc rt2500usb_queue_atim = {
1868         .entry_num              = ATIM_ENTRIES,
1869         .data_size              = DATA_FRAME_SIZE,
1870         .desc_size              = TXD_DESC_SIZE,
1871         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
1872 };
1873
1874 static const struct rt2x00_ops rt2500usb_ops = {
1875         .name           = KBUILD_MODNAME,
1876         .max_sta_intf   = 1,
1877         .max_ap_intf    = 1,
1878         .eeprom_size    = EEPROM_SIZE,
1879         .rf_size        = RF_SIZE,
1880         .rx             = &rt2500usb_queue_rx,
1881         .tx             = &rt2500usb_queue_tx,
1882         .bcn            = &rt2500usb_queue_bcn,
1883         .atim           = &rt2500usb_queue_atim,
1884         .lib            = &rt2500usb_rt2x00_ops,
1885         .hw             = &rt2500usb_mac80211_ops,
1886 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1887         .debugfs        = &rt2500usb_rt2x00debug,
1888 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1889 };
1890
1891 /*
1892  * rt2500usb module information.
1893  */
1894 static struct usb_device_id rt2500usb_device_table[] = {
1895         /* ASUS */
1896         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1897         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1898         /* Belkin */
1899         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1900         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1901         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1902         /* Cisco Systems */
1903         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1904         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1905         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1906         /* Conceptronic */
1907         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1908         /* D-LINK */
1909         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1910         /* Gigabyte */
1911         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1912         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1913         /* Hercules */
1914         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1915         /* Melco */
1916         { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
1917         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1918         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1919         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1920         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1921         /* MSI */
1922         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1923         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1924         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1925         /* Ralink */
1926         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1927         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1928         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1929         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1930         /* Siemens */
1931         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1932         /* SMC */
1933         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1934         /* Spairon */
1935         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1936         /* Trust */
1937         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1938         /* Zinwell */
1939         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1940         { 0, }
1941 };
1942
1943 MODULE_AUTHOR(DRV_PROJECT);
1944 MODULE_VERSION(DRV_VERSION);
1945 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1946 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1947 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1948 MODULE_LICENSE("GPL");
1949
1950 static struct usb_driver rt2500usb_driver = {
1951         .name           = KBUILD_MODNAME,
1952         .id_table       = rt2500usb_device_table,
1953         .probe          = rt2x00usb_probe,
1954         .disconnect     = rt2x00usb_disconnect,
1955         .suspend        = rt2x00usb_suspend,
1956         .resume         = rt2x00usb_resume,
1957 };
1958
1959 static int __init rt2500usb_init(void)
1960 {
1961         return usb_register(&rt2500usb_driver);
1962 }
1963
1964 static void __exit rt2500usb_exit(void)
1965 {
1966         usb_deregister(&rt2500usb_driver);
1967 }
1968
1969 module_init(rt2500usb_init);
1970 module_exit(rt2500usb_exit);