rt2x00: Split rt2x00lib_write_tx_desc()
[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         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
80                                       USB_VENDOR_REQUEST_IN, offset,
81                                       value, length,
82                                       REGISTER_TIMEOUT16(length));
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         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
110                                       USB_VENDOR_REQUEST_OUT, offset,
111                                       value, length,
112                                       REGISTER_TIMEOUT16(length));
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_brightness_set(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         u16 reg;
293
294         rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, &reg);
295
296         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
297                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, enabled);
298         else if (led->type == LED_TYPE_ACTIVITY)
299                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, enabled);
300
301         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
302 }
303
304 static int rt2500usb_blink_set(struct led_classdev *led_cdev,
305                                unsigned long *delay_on,
306                                unsigned long *delay_off)
307 {
308         struct rt2x00_led *led =
309             container_of(led_cdev, struct rt2x00_led, led_dev);
310         u16 reg;
311
312         rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, &reg);
313         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, *delay_on);
314         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, *delay_off);
315         rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
316
317         return 0;
318 }
319 #endif /* CONFIG_RT2500USB_LEDS */
320
321 /*
322  * Configuration handlers.
323  */
324 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
325                                     const unsigned int filter_flags)
326 {
327         u16 reg;
328
329         /*
330          * Start configuration steps.
331          * Note that the version error will always be dropped
332          * and broadcast frames will always be accepted since
333          * there is no filter for it at this time.
334          */
335         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
336         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
337                            !(filter_flags & FIF_FCSFAIL));
338         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
339                            !(filter_flags & FIF_PLCPFAIL));
340         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
341                            !(filter_flags & FIF_CONTROL));
342         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
343                            !(filter_flags & FIF_PROMISC_IN_BSS));
344         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
345                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
346                            !rt2x00dev->intf_ap_count);
347         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
348         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
349                            !(filter_flags & FIF_ALLMULTI));
350         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
351         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
352 }
353
354 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
355                                   struct rt2x00_intf *intf,
356                                   struct rt2x00intf_conf *conf,
357                                   const unsigned int flags)
358 {
359         unsigned int bcn_preload;
360         u16 reg;
361
362         if (flags & CONFIG_UPDATE_TYPE) {
363                 /*
364                  * Enable beacon config
365                  */
366                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
367                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
368                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
369                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
370                                    2 * (conf->type != IEEE80211_IF_TYPE_STA));
371                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
372
373                 /*
374                  * Enable synchronisation.
375                  */
376                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
377                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
378                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
379
380                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
381                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
382                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
383                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
384                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
385         }
386
387         if (flags & CONFIG_UPDATE_MAC)
388                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
389                                               (3 * sizeof(__le16)));
390
391         if (flags & CONFIG_UPDATE_BSSID)
392                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
393                                               (3 * sizeof(__le16)));
394 }
395
396 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
397                                  struct rt2x00lib_erp *erp)
398 {
399         u16 reg;
400
401         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
402         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
403         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
404
405         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
406         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
407                            !!erp->short_preamble);
408         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
409 }
410
411 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
412                                      const int basic_rate_mask)
413 {
414         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
415 }
416
417 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
418                                      struct rf_channel *rf, const int txpower)
419 {
420         /*
421          * Set TXpower.
422          */
423         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
424
425         /*
426          * For RT2525E we should first set the channel to half band higher.
427          */
428         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
429                 static const u32 vals[] = {
430                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
431                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
432                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
433                         0x00000902, 0x00000906
434                 };
435
436                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
437                 if (rf->rf4)
438                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
439         }
440
441         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
442         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
443         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
444         if (rf->rf4)
445                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
446 }
447
448 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
449                                      const int txpower)
450 {
451         u32 rf3;
452
453         rt2x00_rf_read(rt2x00dev, 3, &rf3);
454         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
455         rt2500usb_rf_write(rt2x00dev, 3, rf3);
456 }
457
458 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
459                                      struct antenna_setup *ant)
460 {
461         u8 r2;
462         u8 r14;
463         u16 csr5;
464         u16 csr6;
465
466         /*
467          * We should never come here because rt2x00lib is supposed
468          * to catch this and send us the correct antenna explicitely.
469          */
470         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
471                ant->tx == ANTENNA_SW_DIVERSITY);
472
473         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
474         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
475         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
476         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
477
478         /*
479          * Configure the TX antenna.
480          */
481         switch (ant->tx) {
482         case ANTENNA_HW_DIVERSITY:
483                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
484                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
485                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
486                 break;
487         case ANTENNA_A:
488                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
489                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
490                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
491                 break;
492         case ANTENNA_B:
493         default:
494                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
495                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
496                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
497                 break;
498         }
499
500         /*
501          * Configure the RX antenna.
502          */
503         switch (ant->rx) {
504         case ANTENNA_HW_DIVERSITY:
505                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
506                 break;
507         case ANTENNA_A:
508                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
509                 break;
510         case ANTENNA_B:
511         default:
512                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
513                 break;
514         }
515
516         /*
517          * RT2525E and RT5222 need to flip TX I/Q
518          */
519         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
520             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
521                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
522                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
523                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
524
525                 /*
526                  * RT2525E does not need RX I/Q Flip.
527                  */
528                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
529                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
530         } else {
531                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
532                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
533         }
534
535         rt2500usb_bbp_write(rt2x00dev, 2, r2);
536         rt2500usb_bbp_write(rt2x00dev, 14, r14);
537         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
538         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
539 }
540
541 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
542                                       struct rt2x00lib_conf *libconf)
543 {
544         u16 reg;
545
546         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
547         rt2500usb_register_write(rt2x00dev, MAC_CSR11, libconf->sifs);
548         rt2500usb_register_write(rt2x00dev, MAC_CSR12, libconf->eifs);
549
550         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
551         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
552                            libconf->conf->beacon_int * 4);
553         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
554 }
555
556 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
557                              struct rt2x00lib_conf *libconf,
558                              const unsigned int flags)
559 {
560         if (flags & CONFIG_UPDATE_PHYMODE)
561                 rt2500usb_config_phymode(rt2x00dev, libconf->basic_rates);
562         if (flags & CONFIG_UPDATE_CHANNEL)
563                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
564                                          libconf->conf->power_level);
565         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
566                 rt2500usb_config_txpower(rt2x00dev,
567                                          libconf->conf->power_level);
568         if (flags & CONFIG_UPDATE_ANTENNA)
569                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
570         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
571                 rt2500usb_config_duration(rt2x00dev, libconf);
572 }
573
574 /*
575  * Link tuning
576  */
577 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
578                                  struct link_qual *qual)
579 {
580         u16 reg;
581
582         /*
583          * Update FCS error count from register.
584          */
585         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
586         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
587
588         /*
589          * Update False CCA count from register.
590          */
591         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
592         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
593 }
594
595 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
596 {
597         u16 eeprom;
598         u16 value;
599
600         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
601         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
602         rt2500usb_bbp_write(rt2x00dev, 24, value);
603
604         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
605         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
606         rt2500usb_bbp_write(rt2x00dev, 25, value);
607
608         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
609         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
610         rt2500usb_bbp_write(rt2x00dev, 61, value);
611
612         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
613         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
614         rt2500usb_bbp_write(rt2x00dev, 17, value);
615
616         rt2x00dev->link.vgc_level = value;
617 }
618
619 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
620 {
621         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
622         u16 bbp_thresh;
623         u16 vgc_bound;
624         u16 sens;
625         u16 r24;
626         u16 r25;
627         u16 r61;
628         u16 r17_sens;
629         u8 r17;
630         u8 up_bound;
631         u8 low_bound;
632
633         /*
634          * Read current r17 value, as well as the sensitivity values
635          * for the r17 register.
636          */
637         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
638         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
639
640         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
641         up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
642         low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
643
644         /*
645          * If we are not associated, we should go straight to the
646          * dynamic CCA tuning.
647          */
648         if (!rt2x00dev->intf_associated)
649                 goto dynamic_cca_tune;
650
651         /*
652          * Determine the BBP tuning threshold and correctly
653          * set BBP 24, 25 and 61.
654          */
655         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
656         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
657
658         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
659         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
660         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
661
662         if ((rssi + bbp_thresh) > 0) {
663                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
664                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
665                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
666         } else {
667                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
668                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
669                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
670         }
671
672         rt2500usb_bbp_write(rt2x00dev, 24, r24);
673         rt2500usb_bbp_write(rt2x00dev, 25, r25);
674         rt2500usb_bbp_write(rt2x00dev, 61, r61);
675
676         /*
677          * A too low RSSI will cause too much false CCA which will
678          * then corrupt the R17 tuning. To remidy this the tuning should
679          * be stopped (While making sure the R17 value will not exceed limits)
680          */
681         if (rssi >= -40) {
682                 if (r17 != 0x60)
683                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
684                 return;
685         }
686
687         /*
688          * Special big-R17 for short distance
689          */
690         if (rssi >= -58) {
691                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
692                 if (r17 != sens)
693                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
694                 return;
695         }
696
697         /*
698          * Special mid-R17 for middle distance
699          */
700         if (rssi >= -74) {
701                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
702                 if (r17 != sens)
703                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
704                 return;
705         }
706
707         /*
708          * Leave short or middle distance condition, restore r17
709          * to the dynamic tuning range.
710          */
711         low_bound = 0x32;
712         if (rssi < -77)
713                 up_bound -= (-77 - rssi);
714
715         if (up_bound < low_bound)
716                 up_bound = low_bound;
717
718         if (r17 > up_bound) {
719                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
720                 rt2x00dev->link.vgc_level = up_bound;
721                 return;
722         }
723
724 dynamic_cca_tune:
725
726         /*
727          * R17 is inside the dynamic tuning range,
728          * start tuning the link based on the false cca counter.
729          */
730         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
731                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
732                 rt2x00dev->link.vgc_level = r17;
733         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
734                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
735                 rt2x00dev->link.vgc_level = r17;
736         }
737 }
738
739 /*
740  * Initialization functions.
741  */
742 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
743 {
744         u16 reg;
745
746         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
747                                     USB_MODE_TEST, REGISTER_TIMEOUT);
748         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
749                                     0x00f0, REGISTER_TIMEOUT);
750
751         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
752         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
753         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
754
755         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
756         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
757
758         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
759         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
760         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
761         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
762         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
763
764         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
765         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
766         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
767         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
768         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
769
770         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
771         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
772         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
773         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
774         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
775         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
776
777         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
778         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
779         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
780         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
781         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
782         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
783
784         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
785         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
786         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
787         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
788         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
789         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
790
791         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
792         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
793         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
794         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
795         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
796         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
797
798         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
799         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
800
801         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
802                 return -EBUSY;
803
804         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
805         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
806         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
807         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
808         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
809
810         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
811                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
812                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
813         } else {
814                 reg = 0;
815                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
816                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
817         }
818         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
819
820         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
821         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
822         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
823         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
824
825         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
826         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
827                            rt2x00dev->rx->data_size);
828         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
829
830         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
831         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
832         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
833         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
834
835         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
836         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
837         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
838
839         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
840         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
841         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
842
843         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
844         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
845         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
846
847         return 0;
848 }
849
850 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
851 {
852         unsigned int i;
853         u16 eeprom;
854         u8 value;
855         u8 reg_id;
856
857         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
858                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
859                 if ((value != 0xff) && (value != 0x00))
860                         goto continue_csr_init;
861                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
862                 udelay(REGISTER_BUSY_DELAY);
863         }
864
865         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
866         return -EACCES;
867
868 continue_csr_init:
869         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
870         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
871         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
872         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
873         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
874         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
875         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
876         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
877         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
878         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
879         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
880         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
881         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
882         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
883         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
884         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
885         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
886         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
887         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
888         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
889         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
890         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
891         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
892         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
893         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
894         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
895         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
896         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
897         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
898         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
899         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
900
901         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
902                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
903
904                 if (eeprom != 0xffff && eeprom != 0x0000) {
905                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
906                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
907                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
908                 }
909         }
910
911         return 0;
912 }
913
914 /*
915  * Device state switch handlers.
916  */
917 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
918                                 enum dev_state state)
919 {
920         u16 reg;
921
922         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
923         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
924                            state == STATE_RADIO_RX_OFF);
925         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
926 }
927
928 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
929 {
930         /*
931          * Initialize all registers.
932          */
933         if (rt2500usb_init_registers(rt2x00dev) ||
934             rt2500usb_init_bbp(rt2x00dev)) {
935                 ERROR(rt2x00dev, "Register initialization failed.\n");
936                 return -EIO;
937         }
938
939         return 0;
940 }
941
942 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
943 {
944         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
945         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
946
947         /*
948          * Disable synchronisation.
949          */
950         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
951
952         rt2x00usb_disable_radio(rt2x00dev);
953 }
954
955 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
956                                enum dev_state state)
957 {
958         u16 reg;
959         u16 reg2;
960         unsigned int i;
961         char put_to_sleep;
962         char bbp_state;
963         char rf_state;
964
965         put_to_sleep = (state != STATE_AWAKE);
966
967         reg = 0;
968         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
969         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
970         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
971         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
972         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
973         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
974
975         /*
976          * Device is not guaranteed to be in the requested state yet.
977          * We must wait until the register indicates that the
978          * device has entered the correct state.
979          */
980         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
981                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
982                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
983                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
984                 if (bbp_state == state && rf_state == state)
985                         return 0;
986                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
987                 msleep(30);
988         }
989
990         NOTICE(rt2x00dev, "Device failed to enter state %d, "
991                "current device state: bbp %d and rf %d.\n",
992                state, bbp_state, rf_state);
993
994         return -EBUSY;
995 }
996
997 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
998                                       enum dev_state state)
999 {
1000         int retval = 0;
1001
1002         switch (state) {
1003         case STATE_RADIO_ON:
1004                 retval = rt2500usb_enable_radio(rt2x00dev);
1005                 break;
1006         case STATE_RADIO_OFF:
1007                 rt2500usb_disable_radio(rt2x00dev);
1008                 break;
1009         case STATE_RADIO_RX_ON:
1010         case STATE_RADIO_RX_ON_LINK:
1011                 rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
1012                 break;
1013         case STATE_RADIO_RX_OFF:
1014         case STATE_RADIO_RX_OFF_LINK:
1015                 rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
1016                 break;
1017         case STATE_DEEP_SLEEP:
1018         case STATE_SLEEP:
1019         case STATE_STANDBY:
1020         case STATE_AWAKE:
1021                 retval = rt2500usb_set_state(rt2x00dev, state);
1022                 break;
1023         default:
1024                 retval = -ENOTSUPP;
1025                 break;
1026         }
1027
1028         return retval;
1029 }
1030
1031 /*
1032  * TX descriptor initialization
1033  */
1034 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1035                                     struct sk_buff *skb,
1036                                     struct txentry_desc *txdesc)
1037 {
1038         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1039         __le32 *txd = skbdesc->desc;
1040         u32 word;
1041
1042         /*
1043          * Start writing the descriptor words.
1044          */
1045         rt2x00_desc_read(txd, 1, &word);
1046         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1047         rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1048         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1049         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1050         rt2x00_desc_write(txd, 1, word);
1051
1052         rt2x00_desc_read(txd, 2, &word);
1053         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1054         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1055         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1056         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1057         rt2x00_desc_write(txd, 2, word);
1058
1059         rt2x00_desc_read(txd, 0, &word);
1060         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1061         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1062                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1063         rt2x00_set_field32(&word, TXD_W0_ACK,
1064                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1065         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1066                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1067         rt2x00_set_field32(&word, TXD_W0_OFDM,
1068                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1069         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1070                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1071         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1072         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
1073         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1074         rt2x00_desc_write(txd, 0, word);
1075 }
1076
1077 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1078                                      struct sk_buff *skb)
1079 {
1080         int length;
1081
1082         /*
1083          * The length _must_ be a multiple of 2,
1084          * but it must _not_ be a multiple of the USB packet size.
1085          */
1086         length = roundup(skb->len, 2);
1087         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1088
1089         return length;
1090 }
1091
1092 /*
1093  * TX data initialization
1094  */
1095 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1096                                     const enum data_queue_qid queue)
1097 {
1098         u16 reg;
1099
1100         if (queue != QID_BEACON)
1101                 return;
1102
1103         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1104         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1105                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1106                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1107                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1108                 /*
1109                  * Beacon generation will fail initially.
1110                  * To prevent this we need to register the TXRX_CSR19
1111                  * register several times.
1112                  */
1113                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1114                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1115                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1116                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1117                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1118         }
1119 }
1120
1121 /*
1122  * RX control handlers
1123  */
1124 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1125                                   struct rxdone_entry_desc *rxdesc)
1126 {
1127         struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data;
1128         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1129         __le32 *rxd =
1130             (__le32 *)(entry->skb->data +
1131                        (priv_rx->urb->actual_length - entry->queue->desc_size));
1132         u32 word0;
1133         u32 word1;
1134
1135         /*
1136          * Copy descriptor to the skb->cb array, this has 2 benefits:
1137          * 1) Each descriptor word is 4 byte aligned.
1138          * 2) Descriptor is safe  from moving of frame data in rt2x00usb.
1139          */
1140         skbdesc->desc_len =
1141             min_t(u16, entry->queue->desc_size, sizeof(entry->skb->cb));
1142         memcpy(entry->skb->cb, rxd, skbdesc->desc_len);
1143         skbdesc->desc = entry->skb->cb;
1144         rxd = (__le32 *)skbdesc->desc;
1145
1146         /*
1147          * It is now safe to read the descriptor on all architectures.
1148          */
1149         rt2x00_desc_read(rxd, 0, &word0);
1150         rt2x00_desc_read(rxd, 1, &word1);
1151
1152         rxdesc->flags = 0;
1153         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1154                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1155         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1156                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1157
1158         /*
1159          * Obtain the status about this packet.
1160          * When frame was received with an OFDM bitrate,
1161          * the signal is the PLCP value. If it was received with
1162          * a CCK bitrate the signal is the rate in 100kbit/s.
1163          */
1164         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1165         rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1166             entry->queue->rt2x00dev->rssi_offset;
1167         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1168
1169         rxdesc->dev_flags = 0;
1170         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1171                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1172         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1173                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1174
1175         /*
1176          * Adjust the skb memory window to the frame boundaries.
1177          */
1178         skb_trim(entry->skb, rxdesc->size);
1179         skbdesc->data = entry->skb->data;
1180         skbdesc->data_len = rxdesc->size;
1181 }
1182
1183 /*
1184  * Interrupt functions.
1185  */
1186 static void rt2500usb_beacondone(struct urb *urb)
1187 {
1188         struct queue_entry *entry = (struct queue_entry *)urb->context;
1189         struct queue_entry_priv_usb_bcn *priv_bcn = entry->priv_data;
1190
1191         if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1192                 return;
1193
1194         /*
1195          * Check if this was the guardian beacon,
1196          * if that was the case we need to send the real beacon now.
1197          * Otherwise we should free the sk_buffer, the device
1198          * should be doing the rest of the work now.
1199          */
1200         if (priv_bcn->guardian_urb == urb) {
1201                 usb_submit_urb(priv_bcn->urb, GFP_ATOMIC);
1202         } else if (priv_bcn->urb == urb) {
1203                 dev_kfree_skb(entry->skb);
1204                 entry->skb = NULL;
1205         }
1206 }
1207
1208 /*
1209  * Device probe functions.
1210  */
1211 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1212 {
1213         u16 word;
1214         u8 *mac;
1215         u8 bbp;
1216
1217         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1218
1219         /*
1220          * Start validation of the data that has been read.
1221          */
1222         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1223         if (!is_valid_ether_addr(mac)) {
1224                 DECLARE_MAC_BUF(macbuf);
1225
1226                 random_ether_addr(mac);
1227                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1228         }
1229
1230         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1231         if (word == 0xffff) {
1232                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1233                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1234                                    ANTENNA_SW_DIVERSITY);
1235                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1236                                    ANTENNA_SW_DIVERSITY);
1237                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1238                                    LED_MODE_DEFAULT);
1239                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1240                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1241                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1242                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1243                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1244         }
1245
1246         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1247         if (word == 0xffff) {
1248                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1249                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1250                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1251                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1252                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1253         }
1254
1255         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1256         if (word == 0xffff) {
1257                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1258                                    DEFAULT_RSSI_OFFSET);
1259                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1260                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1261         }
1262
1263         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1264         if (word == 0xffff) {
1265                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1266                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1267                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1268         }
1269
1270         /*
1271          * Switch lower vgc bound to current BBP R17 value,
1272          * lower the value a bit for better quality.
1273          */
1274         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1275         bbp -= 6;
1276
1277         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1278         if (word == 0xffff) {
1279                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1280                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1281                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1282                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1283         }
1284
1285         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1286         if (word == 0xffff) {
1287                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1288                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1289                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1290                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1291         } else {
1292                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1293                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1294         }
1295
1296         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1297         if (word == 0xffff) {
1298                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1299                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1300                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1301                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1302         }
1303
1304         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1305         if (word == 0xffff) {
1306                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1307                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1308                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1309                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1310         }
1311
1312         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1313         if (word == 0xffff) {
1314                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1315                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1316                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1317                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1318         }
1319
1320         return 0;
1321 }
1322
1323 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1324 {
1325         u16 reg;
1326         u16 value;
1327         u16 eeprom;
1328
1329         /*
1330          * Read EEPROM word for configuration.
1331          */
1332         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1333
1334         /*
1335          * Identify RF chipset.
1336          */
1337         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1338         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1339         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1340
1341         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1342                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1343                 return -ENODEV;
1344         }
1345
1346         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1347             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1348             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1349             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1350             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1351             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1352                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1353                 return -ENODEV;
1354         }
1355
1356         /*
1357          * Identify default antenna configuration.
1358          */
1359         rt2x00dev->default_ant.tx =
1360             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1361         rt2x00dev->default_ant.rx =
1362             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1363
1364         /*
1365          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1366          * I am not 100% sure about this, but the legacy drivers do not
1367          * indicate antenna swapping in software is required when
1368          * diversity is enabled.
1369          */
1370         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1371                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1372         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1373                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1374
1375         /*
1376          * Store led mode, for correct led behaviour.
1377          */
1378 #ifdef CONFIG_RT2500USB_LEDS
1379         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1380
1381         rt2x00dev->led_radio.rt2x00dev = rt2x00dev;
1382         rt2x00dev->led_radio.type = LED_TYPE_RADIO;
1383         rt2x00dev->led_radio.led_dev.brightness_set =
1384             rt2500usb_brightness_set;
1385         rt2x00dev->led_radio.led_dev.blink_set =
1386             rt2500usb_blink_set;
1387         rt2x00dev->led_radio.flags = LED_INITIALIZED;
1388
1389         if (value == LED_MODE_TXRX_ACTIVITY) {
1390                 rt2x00dev->led_qual.rt2x00dev = rt2x00dev;
1391                 rt2x00dev->led_qual.type = LED_TYPE_ACTIVITY;
1392                 rt2x00dev->led_qual.led_dev.brightness_set =
1393                     rt2500usb_brightness_set;
1394                 rt2x00dev->led_qual.led_dev.blink_set =
1395                     rt2500usb_blink_set;
1396                 rt2x00dev->led_qual.flags = LED_INITIALIZED;
1397         }
1398 #endif /* CONFIG_RT2500USB_LEDS */
1399
1400         /*
1401          * Check if the BBP tuning should be disabled.
1402          */
1403         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1404         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1405                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1406
1407         /*
1408          * Read the RSSI <-> dBm offset information.
1409          */
1410         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1411         rt2x00dev->rssi_offset =
1412             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1413
1414         return 0;
1415 }
1416
1417 /*
1418  * RF value list for RF2522
1419  * Supports: 2.4 GHz
1420  */
1421 static const struct rf_channel rf_vals_bg_2522[] = {
1422         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1423         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1424         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1425         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1426         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1427         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1428         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1429         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1430         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1431         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1432         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1433         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1434         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1435         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1436 };
1437
1438 /*
1439  * RF value list for RF2523
1440  * Supports: 2.4 GHz
1441  */
1442 static const struct rf_channel rf_vals_bg_2523[] = {
1443         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1444         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1445         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1446         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1447         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1448         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1449         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1450         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1451         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1452         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1453         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1454         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1455         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1456         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1457 };
1458
1459 /*
1460  * RF value list for RF2524
1461  * Supports: 2.4 GHz
1462  */
1463 static const struct rf_channel rf_vals_bg_2524[] = {
1464         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1465         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1466         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1467         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1468         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1469         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1470         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1471         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1472         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1473         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1474         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1475         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1476         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1477         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1478 };
1479
1480 /*
1481  * RF value list for RF2525
1482  * Supports: 2.4 GHz
1483  */
1484 static const struct rf_channel rf_vals_bg_2525[] = {
1485         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1486         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1487         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1488         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1489         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1490         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1491         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1492         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1493         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1494         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1495         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1496         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1497         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1498         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1499 };
1500
1501 /*
1502  * RF value list for RF2525e
1503  * Supports: 2.4 GHz
1504  */
1505 static const struct rf_channel rf_vals_bg_2525e[] = {
1506         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1507         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1508         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1509         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1510         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1511         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1512         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1513         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1514         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1515         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1516         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1517         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1518         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1519         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1520 };
1521
1522 /*
1523  * RF value list for RF5222
1524  * Supports: 2.4 GHz & 5.2 GHz
1525  */
1526 static const struct rf_channel rf_vals_5222[] = {
1527         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1528         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1529         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1530         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1531         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1532         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1533         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1534         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1535         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1536         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1537         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1538         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1539         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1540         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1541
1542         /* 802.11 UNI / HyperLan 2 */
1543         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1544         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1545         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1546         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1547         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1548         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1549         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1550         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1551
1552         /* 802.11 HyperLan 2 */
1553         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1554         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1555         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1556         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1557         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1558         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1559         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1560         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1561         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1562         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1563
1564         /* 802.11 UNII */
1565         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1566         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1567         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1568         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1569         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1570 };
1571
1572 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1573 {
1574         struct hw_mode_spec *spec = &rt2x00dev->spec;
1575         u8 *txpower;
1576         unsigned int i;
1577
1578         /*
1579          * Initialize all hw fields.
1580          */
1581         rt2x00dev->hw->flags =
1582             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1583             IEEE80211_HW_RX_INCLUDES_FCS |
1584             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1585             IEEE80211_HW_SIGNAL_DBM;
1586
1587         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1588
1589         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1590         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1591                                 rt2x00_eeprom_addr(rt2x00dev,
1592                                                    EEPROM_MAC_ADDR_0));
1593
1594         /*
1595          * Convert tx_power array in eeprom.
1596          */
1597         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1598         for (i = 0; i < 14; i++)
1599                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1600
1601         /*
1602          * Initialize hw_mode information.
1603          */
1604         spec->supported_bands = SUPPORT_BAND_2GHZ;
1605         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1606         spec->tx_power_a = NULL;
1607         spec->tx_power_bg = txpower;
1608         spec->tx_power_default = DEFAULT_TXPOWER;
1609
1610         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1611                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1612                 spec->channels = rf_vals_bg_2522;
1613         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1614                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1615                 spec->channels = rf_vals_bg_2523;
1616         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1617                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1618                 spec->channels = rf_vals_bg_2524;
1619         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1620                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1621                 spec->channels = rf_vals_bg_2525;
1622         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1623                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1624                 spec->channels = rf_vals_bg_2525e;
1625         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1626                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1627                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1628                 spec->channels = rf_vals_5222;
1629         }
1630 }
1631
1632 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1633 {
1634         int retval;
1635
1636         /*
1637          * Allocate eeprom data.
1638          */
1639         retval = rt2500usb_validate_eeprom(rt2x00dev);
1640         if (retval)
1641                 return retval;
1642
1643         retval = rt2500usb_init_eeprom(rt2x00dev);
1644         if (retval)
1645                 return retval;
1646
1647         /*
1648          * Initialize hw specifications.
1649          */
1650         rt2500usb_probe_hw_mode(rt2x00dev);
1651
1652         /*
1653          * This device requires the atim queue
1654          */
1655         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1656         __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1657         __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
1658
1659         /*
1660          * Set the rssi offset.
1661          */
1662         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1663
1664         return 0;
1665 }
1666
1667 /*
1668  * IEEE80211 stack callback functions.
1669  */
1670 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1671                                    struct sk_buff *skb,
1672                                    struct ieee80211_tx_control *control)
1673 {
1674         struct rt2x00_dev *rt2x00dev = hw->priv;
1675         struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
1676         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1677         struct queue_entry_priv_usb_bcn *priv_bcn;
1678         struct skb_frame_desc *skbdesc;
1679         struct txentry_desc txdesc;
1680         int pipe = usb_sndbulkpipe(usb_dev, 1);
1681         int length;
1682         u16 reg;
1683
1684         if (unlikely(!intf->beacon))
1685                 return -ENOBUFS;
1686
1687         priv_bcn = intf->beacon->priv_data;
1688
1689         /*
1690          * Copy all TX descriptor information into txdesc,
1691          * after that we are free to use the skb->cb array
1692          * for our information.
1693          */
1694         intf->beacon->skb = skb;
1695         rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc, control);
1696
1697         /*
1698          * Add the descriptor in front of the skb.
1699          */
1700         skb_push(skb, intf->beacon->queue->desc_size);
1701         memset(skb->data, 0, intf->beacon->queue->desc_size);
1702
1703         /*
1704          * Fill in skb descriptor
1705          */
1706         skbdesc = get_skb_frame_desc(skb);
1707         memset(skbdesc, 0, sizeof(*skbdesc));
1708         skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
1709         skbdesc->data = skb->data + intf->beacon->queue->desc_size;
1710         skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
1711         skbdesc->desc = skb->data;
1712         skbdesc->desc_len = intf->beacon->queue->desc_size;
1713         skbdesc->entry = intf->beacon;
1714
1715         /*
1716          * Disable beaconing while we are reloading the beacon data,
1717          * otherwise we might be sending out invalid data.
1718          */
1719         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1720         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
1721         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
1722         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1723         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1724
1725         rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
1726
1727         /*
1728          * USB devices cannot blindly pass the skb->len as the
1729          * length of the data to usb_fill_bulk_urb. Pass the skb
1730          * to the driver to determine what the length should be.
1731          */
1732         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1733
1734         usb_fill_bulk_urb(priv_bcn->urb, usb_dev, pipe,
1735                           skb->data, length, rt2500usb_beacondone,
1736                           intf->beacon);
1737
1738         /*
1739          * Second we need to create the guardian byte.
1740          * We only need a single byte, so lets recycle
1741          * the 'flags' field we are not using for beacons.
1742          */
1743         priv_bcn->guardian_data = 0;
1744         usb_fill_bulk_urb(priv_bcn->guardian_urb, usb_dev, pipe,
1745                           &priv_bcn->guardian_data, 1, rt2500usb_beacondone,
1746                           intf->beacon);
1747
1748         /*
1749          * Send out the guardian byte.
1750          */
1751         usb_submit_urb(priv_bcn->guardian_urb, GFP_ATOMIC);
1752
1753         /*
1754          * Enable beacon generation.
1755          */
1756         rt2500usb_kick_tx_queue(rt2x00dev, QID_BEACON);
1757
1758         return 0;
1759 }
1760
1761 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1762         .tx                     = rt2x00mac_tx,
1763         .start                  = rt2x00mac_start,
1764         .stop                   = rt2x00mac_stop,
1765         .add_interface          = rt2x00mac_add_interface,
1766         .remove_interface       = rt2x00mac_remove_interface,
1767         .config                 = rt2x00mac_config,
1768         .config_interface       = rt2x00mac_config_interface,
1769         .configure_filter       = rt2x00mac_configure_filter,
1770         .get_stats              = rt2x00mac_get_stats,
1771         .bss_info_changed       = rt2x00mac_bss_info_changed,
1772         .conf_tx                = rt2x00mac_conf_tx,
1773         .get_tx_stats           = rt2x00mac_get_tx_stats,
1774         .beacon_update          = rt2500usb_beacon_update,
1775 };
1776
1777 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1778         .probe_hw               = rt2500usb_probe_hw,
1779         .initialize             = rt2x00usb_initialize,
1780         .uninitialize           = rt2x00usb_uninitialize,
1781         .init_rxentry           = rt2x00usb_init_rxentry,
1782         .init_txentry           = rt2x00usb_init_txentry,
1783         .set_device_state       = rt2500usb_set_device_state,
1784         .link_stats             = rt2500usb_link_stats,
1785         .reset_tuner            = rt2500usb_reset_tuner,
1786         .link_tuner             = rt2500usb_link_tuner,
1787         .write_tx_desc          = rt2500usb_write_tx_desc,
1788         .write_tx_data          = rt2x00usb_write_tx_data,
1789         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1790         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1791         .fill_rxdone            = rt2500usb_fill_rxdone,
1792         .config_filter          = rt2500usb_config_filter,
1793         .config_intf            = rt2500usb_config_intf,
1794         .config_erp             = rt2500usb_config_erp,
1795         .config                 = rt2500usb_config,
1796 };
1797
1798 static const struct data_queue_desc rt2500usb_queue_rx = {
1799         .entry_num              = RX_ENTRIES,
1800         .data_size              = DATA_FRAME_SIZE,
1801         .desc_size              = RXD_DESC_SIZE,
1802         .priv_size              = sizeof(struct queue_entry_priv_usb_rx),
1803 };
1804
1805 static const struct data_queue_desc rt2500usb_queue_tx = {
1806         .entry_num              = TX_ENTRIES,
1807         .data_size              = DATA_FRAME_SIZE,
1808         .desc_size              = TXD_DESC_SIZE,
1809         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
1810 };
1811
1812 static const struct data_queue_desc rt2500usb_queue_bcn = {
1813         .entry_num              = BEACON_ENTRIES,
1814         .data_size              = MGMT_FRAME_SIZE,
1815         .desc_size              = TXD_DESC_SIZE,
1816         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1817 };
1818
1819 static const struct data_queue_desc rt2500usb_queue_atim = {
1820         .entry_num              = ATIM_ENTRIES,
1821         .data_size              = DATA_FRAME_SIZE,
1822         .desc_size              = TXD_DESC_SIZE,
1823         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
1824 };
1825
1826 static const struct rt2x00_ops rt2500usb_ops = {
1827         .name           = KBUILD_MODNAME,
1828         .max_sta_intf   = 1,
1829         .max_ap_intf    = 1,
1830         .eeprom_size    = EEPROM_SIZE,
1831         .rf_size        = RF_SIZE,
1832         .tx_queues      = NUM_TX_QUEUES,
1833         .rx             = &rt2500usb_queue_rx,
1834         .tx             = &rt2500usb_queue_tx,
1835         .bcn            = &rt2500usb_queue_bcn,
1836         .atim           = &rt2500usb_queue_atim,
1837         .lib            = &rt2500usb_rt2x00_ops,
1838         .hw             = &rt2500usb_mac80211_ops,
1839 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1840         .debugfs        = &rt2500usb_rt2x00debug,
1841 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1842 };
1843
1844 /*
1845  * rt2500usb module information.
1846  */
1847 static struct usb_device_id rt2500usb_device_table[] = {
1848         /* ASUS */
1849         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1850         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1851         /* Belkin */
1852         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1853         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1854         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1855         /* Cisco Systems */
1856         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1857         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1858         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1859         /* Conceptronic */
1860         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1861         /* D-LINK */
1862         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1863         /* Gigabyte */
1864         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1865         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1866         /* Hercules */
1867         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1868         /* Melco */
1869         { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
1870         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1871         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1872         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1873         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1874         /* MSI */
1875         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1876         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1877         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1878         /* Ralink */
1879         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1880         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1881         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1882         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1883         /* Siemens */
1884         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1885         /* SMC */
1886         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1887         /* Spairon */
1888         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1889         /* Trust */
1890         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1891         /* Zinwell */
1892         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1893         { 0, }
1894 };
1895
1896 MODULE_AUTHOR(DRV_PROJECT);
1897 MODULE_VERSION(DRV_VERSION);
1898 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1899 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1900 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1901 MODULE_LICENSE("GPL");
1902
1903 static struct usb_driver rt2500usb_driver = {
1904         .name           = KBUILD_MODNAME,
1905         .id_table       = rt2500usb_device_table,
1906         .probe          = rt2x00usb_probe,
1907         .disconnect     = rt2x00usb_disconnect,
1908         .suspend        = rt2x00usb_suspend,
1909         .resume         = rt2x00usb_resume,
1910 };
1911
1912 static int __init rt2500usb_init(void)
1913 {
1914         return usb_register(&rt2500usb_driver);
1915 }
1916
1917 static void __exit rt2500usb_exit(void)
1918 {
1919         usb_deregister(&rt2500usb_driver);
1920 }
1921
1922 module_init(rt2500usb_init);
1923 module_exit(rt2500usb_exit);