rt2x00: Convert rt2x00 to use generic DMA-mapping API
[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
320 static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
321                                struct rt2x00_led *led,
322                                enum led_type type)
323 {
324         led->rt2x00dev = rt2x00dev;
325         led->type = type;
326         led->led_dev.brightness_set = rt2500usb_brightness_set;
327         led->led_dev.blink_set = rt2500usb_blink_set;
328         led->flags = LED_INITIALIZED;
329 }
330 #endif /* CONFIG_RT2500USB_LEDS */
331
332 /*
333  * Configuration handlers.
334  */
335 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
336                                     const unsigned int filter_flags)
337 {
338         u16 reg;
339
340         /*
341          * Start configuration steps.
342          * Note that the version error will always be dropped
343          * and broadcast frames will always be accepted since
344          * there is no filter for it at this time.
345          */
346         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
347         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
348                            !(filter_flags & FIF_FCSFAIL));
349         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
350                            !(filter_flags & FIF_PLCPFAIL));
351         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
352                            !(filter_flags & FIF_CONTROL));
353         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
354                            !(filter_flags & FIF_PROMISC_IN_BSS));
355         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
356                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
357                            !rt2x00dev->intf_ap_count);
358         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
359         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
360                            !(filter_flags & FIF_ALLMULTI));
361         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
362         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
363 }
364
365 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
366                                   struct rt2x00_intf *intf,
367                                   struct rt2x00intf_conf *conf,
368                                   const unsigned int flags)
369 {
370         unsigned int bcn_preload;
371         u16 reg;
372
373         if (flags & CONFIG_UPDATE_TYPE) {
374                 /*
375                  * Enable beacon config
376                  */
377                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
378                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
379                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
380                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
381                                    2 * (conf->type != IEEE80211_IF_TYPE_STA));
382                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
383
384                 /*
385                  * Enable synchronisation.
386                  */
387                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
388                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
389                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
390
391                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
392                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
393                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
394                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
395                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
396         }
397
398         if (flags & CONFIG_UPDATE_MAC)
399                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
400                                               (3 * sizeof(__le16)));
401
402         if (flags & CONFIG_UPDATE_BSSID)
403                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
404                                               (3 * sizeof(__le16)));
405 }
406
407 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
408                                  struct rt2x00lib_erp *erp)
409 {
410         u16 reg;
411
412         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
413         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
414         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
415
416         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
417         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
418                            !!erp->short_preamble);
419         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
420 }
421
422 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
423                                      const int basic_rate_mask)
424 {
425         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
426 }
427
428 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
429                                      struct rf_channel *rf, const int txpower)
430 {
431         /*
432          * Set TXpower.
433          */
434         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
435
436         /*
437          * For RT2525E we should first set the channel to half band higher.
438          */
439         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
440                 static const u32 vals[] = {
441                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
442                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
443                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
444                         0x00000902, 0x00000906
445                 };
446
447                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
448                 if (rf->rf4)
449                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
450         }
451
452         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
453         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
454         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
455         if (rf->rf4)
456                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
457 }
458
459 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
460                                      const int txpower)
461 {
462         u32 rf3;
463
464         rt2x00_rf_read(rt2x00dev, 3, &rf3);
465         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
466         rt2500usb_rf_write(rt2x00dev, 3, rf3);
467 }
468
469 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
470                                      struct antenna_setup *ant)
471 {
472         u8 r2;
473         u8 r14;
474         u16 csr5;
475         u16 csr6;
476
477         /*
478          * We should never come here because rt2x00lib is supposed
479          * to catch this and send us the correct antenna explicitely.
480          */
481         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
482                ant->tx == ANTENNA_SW_DIVERSITY);
483
484         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
485         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
486         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
487         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
488
489         /*
490          * Configure the TX antenna.
491          */
492         switch (ant->tx) {
493         case ANTENNA_HW_DIVERSITY:
494                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
495                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
496                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
497                 break;
498         case ANTENNA_A:
499                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
500                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
501                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
502                 break;
503         case ANTENNA_B:
504         default:
505                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
506                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
507                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
508                 break;
509         }
510
511         /*
512          * Configure the RX antenna.
513          */
514         switch (ant->rx) {
515         case ANTENNA_HW_DIVERSITY:
516                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
517                 break;
518         case ANTENNA_A:
519                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
520                 break;
521         case ANTENNA_B:
522         default:
523                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
524                 break;
525         }
526
527         /*
528          * RT2525E and RT5222 need to flip TX I/Q
529          */
530         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
531             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
532                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
533                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
534                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
535
536                 /*
537                  * RT2525E does not need RX I/Q Flip.
538                  */
539                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
540                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
541         } else {
542                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
543                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
544         }
545
546         rt2500usb_bbp_write(rt2x00dev, 2, r2);
547         rt2500usb_bbp_write(rt2x00dev, 14, r14);
548         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
549         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
550 }
551
552 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
553                                       struct rt2x00lib_conf *libconf)
554 {
555         u16 reg;
556
557         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
558         rt2500usb_register_write(rt2x00dev, MAC_CSR11, libconf->sifs);
559         rt2500usb_register_write(rt2x00dev, MAC_CSR12, libconf->eifs);
560
561         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
562         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
563                            libconf->conf->beacon_int * 4);
564         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
565 }
566
567 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
568                              struct rt2x00lib_conf *libconf,
569                              const unsigned int flags)
570 {
571         if (flags & CONFIG_UPDATE_PHYMODE)
572                 rt2500usb_config_phymode(rt2x00dev, libconf->basic_rates);
573         if (flags & CONFIG_UPDATE_CHANNEL)
574                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
575                                          libconf->conf->power_level);
576         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
577                 rt2500usb_config_txpower(rt2x00dev,
578                                          libconf->conf->power_level);
579         if (flags & CONFIG_UPDATE_ANTENNA)
580                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
581         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
582                 rt2500usb_config_duration(rt2x00dev, libconf);
583 }
584
585 /*
586  * Link tuning
587  */
588 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
589                                  struct link_qual *qual)
590 {
591         u16 reg;
592
593         /*
594          * Update FCS error count from register.
595          */
596         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
597         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
598
599         /*
600          * Update False CCA count from register.
601          */
602         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
603         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
604 }
605
606 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
607 {
608         u16 eeprom;
609         u16 value;
610
611         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
612         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
613         rt2500usb_bbp_write(rt2x00dev, 24, value);
614
615         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
616         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
617         rt2500usb_bbp_write(rt2x00dev, 25, value);
618
619         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
620         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
621         rt2500usb_bbp_write(rt2x00dev, 61, value);
622
623         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
624         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
625         rt2500usb_bbp_write(rt2x00dev, 17, value);
626
627         rt2x00dev->link.vgc_level = value;
628 }
629
630 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
631 {
632         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
633         u16 bbp_thresh;
634         u16 vgc_bound;
635         u16 sens;
636         u16 r24;
637         u16 r25;
638         u16 r61;
639         u16 r17_sens;
640         u8 r17;
641         u8 up_bound;
642         u8 low_bound;
643
644         /*
645          * Read current r17 value, as well as the sensitivity values
646          * for the r17 register.
647          */
648         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
649         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
650
651         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
652         up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
653         low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
654
655         /*
656          * If we are not associated, we should go straight to the
657          * dynamic CCA tuning.
658          */
659         if (!rt2x00dev->intf_associated)
660                 goto dynamic_cca_tune;
661
662         /*
663          * Determine the BBP tuning threshold and correctly
664          * set BBP 24, 25 and 61.
665          */
666         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
667         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
668
669         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
670         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
671         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
672
673         if ((rssi + bbp_thresh) > 0) {
674                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
675                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
676                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
677         } else {
678                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
679                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
680                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
681         }
682
683         rt2500usb_bbp_write(rt2x00dev, 24, r24);
684         rt2500usb_bbp_write(rt2x00dev, 25, r25);
685         rt2500usb_bbp_write(rt2x00dev, 61, r61);
686
687         /*
688          * A too low RSSI will cause too much false CCA which will
689          * then corrupt the R17 tuning. To remidy this the tuning should
690          * be stopped (While making sure the R17 value will not exceed limits)
691          */
692         if (rssi >= -40) {
693                 if (r17 != 0x60)
694                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
695                 return;
696         }
697
698         /*
699          * Special big-R17 for short distance
700          */
701         if (rssi >= -58) {
702                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
703                 if (r17 != sens)
704                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
705                 return;
706         }
707
708         /*
709          * Special mid-R17 for middle distance
710          */
711         if (rssi >= -74) {
712                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
713                 if (r17 != sens)
714                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
715                 return;
716         }
717
718         /*
719          * Leave short or middle distance condition, restore r17
720          * to the dynamic tuning range.
721          */
722         low_bound = 0x32;
723         if (rssi < -77)
724                 up_bound -= (-77 - rssi);
725
726         if (up_bound < low_bound)
727                 up_bound = low_bound;
728
729         if (r17 > up_bound) {
730                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
731                 rt2x00dev->link.vgc_level = up_bound;
732                 return;
733         }
734
735 dynamic_cca_tune:
736
737         /*
738          * R17 is inside the dynamic tuning range,
739          * start tuning the link based on the false cca counter.
740          */
741         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
742                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
743                 rt2x00dev->link.vgc_level = r17;
744         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
745                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
746                 rt2x00dev->link.vgc_level = r17;
747         }
748 }
749
750 /*
751  * Initialization functions.
752  */
753 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
754 {
755         u16 reg;
756
757         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
758                                     USB_MODE_TEST, REGISTER_TIMEOUT);
759         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
760                                     0x00f0, REGISTER_TIMEOUT);
761
762         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
763         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
764         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
765
766         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
767         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
768
769         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
770         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
771         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
772         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
773         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
774
775         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
776         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
777         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
778         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
779         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
780
781         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
782         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
783         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
784         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
785         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
786         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
787
788         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
789         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
790         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
791         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
792         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
793         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
794
795         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
796         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
797         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
798         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
799         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
800         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
801
802         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
803         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
804         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
805         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
806         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
807         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
808
809         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
810         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
811
812         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
813                 return -EBUSY;
814
815         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
816         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
817         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
818         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
819         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
820
821         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
822                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
823                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
824         } else {
825                 reg = 0;
826                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
827                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
828         }
829         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
830
831         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
832         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
833         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
834         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
835
836         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
837         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
838                            rt2x00dev->rx->data_size);
839         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
840
841         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
842         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
843         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
844         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
845
846         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
847         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
848         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
849
850         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
851         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
852         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
853
854         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
855         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
856         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
857
858         return 0;
859 }
860
861 static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
862 {
863         unsigned int i;
864         u8 value;
865
866         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
867                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
868                 if ((value != 0xff) && (value != 0x00))
869                         return 0;
870                 udelay(REGISTER_BUSY_DELAY);
871         }
872
873         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
874         return -EACCES;
875 }
876
877 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
878 {
879         unsigned int i;
880         u16 eeprom;
881         u8 value;
882         u8 reg_id;
883
884         if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
885                 return -EACCES;
886
887         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
888         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
889         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
890         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
891         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
892         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
893         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
894         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
895         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
896         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
897         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
898         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
899         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
900         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
901         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
902         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
903         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
904         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
905         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
906         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
907         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
908         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
909         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
910         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
911         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
912         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
913         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
914         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
915         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
916         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
917         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
918
919         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
920                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
921
922                 if (eeprom != 0xffff && eeprom != 0x0000) {
923                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
924                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
925                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
926                 }
927         }
928
929         return 0;
930 }
931
932 /*
933  * Device state switch handlers.
934  */
935 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
936                                 enum dev_state state)
937 {
938         u16 reg;
939
940         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
941         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
942                            (state == STATE_RADIO_RX_OFF) ||
943                            (state == STATE_RADIO_RX_OFF_LINK));
944         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
945 }
946
947 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
948 {
949         /*
950          * Initialize all registers.
951          */
952         if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
953                      rt2500usb_init_bbp(rt2x00dev)))
954                 return -EIO;
955
956         return 0;
957 }
958
959 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
960 {
961         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
962         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
963
964         /*
965          * Disable synchronisation.
966          */
967         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
968
969         rt2x00usb_disable_radio(rt2x00dev);
970 }
971
972 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
973                                enum dev_state state)
974 {
975         u16 reg;
976         u16 reg2;
977         unsigned int i;
978         char put_to_sleep;
979         char bbp_state;
980         char rf_state;
981
982         put_to_sleep = (state != STATE_AWAKE);
983
984         reg = 0;
985         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
986         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
987         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
988         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
989         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
990         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
991
992         /*
993          * Device is not guaranteed to be in the requested state yet.
994          * We must wait until the register indicates that the
995          * device has entered the correct state.
996          */
997         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
998                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
999                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
1000                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
1001                 if (bbp_state == state && rf_state == state)
1002                         return 0;
1003                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1004                 msleep(30);
1005         }
1006
1007         return -EBUSY;
1008 }
1009
1010 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1011                                       enum dev_state state)
1012 {
1013         int retval = 0;
1014
1015         switch (state) {
1016         case STATE_RADIO_ON:
1017                 retval = rt2500usb_enable_radio(rt2x00dev);
1018                 break;
1019         case STATE_RADIO_OFF:
1020                 rt2500usb_disable_radio(rt2x00dev);
1021                 break;
1022         case STATE_RADIO_RX_ON:
1023         case STATE_RADIO_RX_ON_LINK:
1024         case STATE_RADIO_RX_OFF:
1025         case STATE_RADIO_RX_OFF_LINK:
1026                 rt2500usb_toggle_rx(rt2x00dev, state);
1027                 break;
1028         case STATE_RADIO_IRQ_ON:
1029         case STATE_RADIO_IRQ_OFF:
1030                 /* No support, but no error either */
1031                 break;
1032         case STATE_DEEP_SLEEP:
1033         case STATE_SLEEP:
1034         case STATE_STANDBY:
1035         case STATE_AWAKE:
1036                 retval = rt2500usb_set_state(rt2x00dev, state);
1037                 break;
1038         default:
1039                 retval = -ENOTSUPP;
1040                 break;
1041         }
1042
1043         if (unlikely(retval))
1044                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1045                       state, retval);
1046
1047         return retval;
1048 }
1049
1050 /*
1051  * TX descriptor initialization
1052  */
1053 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1054                                     struct sk_buff *skb,
1055                                     struct txentry_desc *txdesc)
1056 {
1057         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1058         __le32 *txd = skbdesc->desc;
1059         u32 word;
1060
1061         /*
1062          * Start writing the descriptor words.
1063          */
1064         rt2x00_desc_read(txd, 1, &word);
1065         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1066         rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1067         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1068         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1069         rt2x00_desc_write(txd, 1, word);
1070
1071         rt2x00_desc_read(txd, 2, &word);
1072         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1073         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1074         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1075         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1076         rt2x00_desc_write(txd, 2, word);
1077
1078         rt2x00_desc_read(txd, 0, &word);
1079         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1080         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1081                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1082         rt2x00_set_field32(&word, TXD_W0_ACK,
1083                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1084         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1085                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1086         rt2x00_set_field32(&word, TXD_W0_OFDM,
1087                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1088         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1089                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1090         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1091         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT,
1092                            skb->len - skbdesc->desc_len);
1093         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1094         rt2x00_desc_write(txd, 0, word);
1095 }
1096
1097 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1098                                      struct sk_buff *skb)
1099 {
1100         int length;
1101
1102         /*
1103          * The length _must_ be a multiple of 2,
1104          * but it must _not_ be a multiple of the USB packet size.
1105          */
1106         length = roundup(skb->len, 2);
1107         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1108
1109         return length;
1110 }
1111
1112 /*
1113  * TX data initialization
1114  */
1115 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1116                                     const enum data_queue_qid queue)
1117 {
1118         u16 reg;
1119
1120         if (queue != QID_BEACON) {
1121                 rt2x00usb_kick_tx_queue(rt2x00dev, queue);
1122                 return;
1123         }
1124
1125         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1126         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1127                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1128                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1129                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1130                 /*
1131                  * Beacon generation will fail initially.
1132                  * To prevent this we need to register the TXRX_CSR19
1133                  * register several times.
1134                  */
1135                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1136                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1137                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1138                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1139                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1140         }
1141 }
1142
1143 /*
1144  * RX control handlers
1145  */
1146 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1147                                   struct rxdone_entry_desc *rxdesc)
1148 {
1149         struct queue_entry_priv_usb *entry_priv = entry->priv_data;
1150         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1151         __le32 *rxd =
1152             (__le32 *)(entry->skb->data +
1153                        (entry_priv->urb->actual_length -
1154                         entry->queue->desc_size));
1155         u32 word0;
1156         u32 word1;
1157
1158         /*
1159          * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1160          * frame data in rt2x00usb.
1161          */
1162         memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1163         rxd = (__le32 *)skbdesc->desc;
1164
1165         /*
1166          * It is now safe to read the descriptor on all architectures.
1167          */
1168         rt2x00_desc_read(rxd, 0, &word0);
1169         rt2x00_desc_read(rxd, 1, &word1);
1170
1171         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1172                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1173         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1174                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1175
1176         /*
1177          * Obtain the status about this packet.
1178          * When frame was received with an OFDM bitrate,
1179          * the signal is the PLCP value. If it was received with
1180          * a CCK bitrate the signal is the rate in 100kbit/s.
1181          */
1182         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1183         rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1184             entry->queue->rt2x00dev->rssi_offset;
1185         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1186
1187         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1188                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1189         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1190                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1191
1192         /*
1193          * Adjust the skb memory window to the frame boundaries.
1194          */
1195         skb_trim(entry->skb, rxdesc->size);
1196 }
1197
1198 /*
1199  * Interrupt functions.
1200  */
1201 static void rt2500usb_beacondone(struct urb *urb)
1202 {
1203         struct queue_entry *entry = (struct queue_entry *)urb->context;
1204         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1205
1206         if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1207                 return;
1208
1209         /*
1210          * Check if this was the guardian beacon,
1211          * if that was the case we need to send the real beacon now.
1212          * Otherwise we should free the sk_buffer, the device
1213          * should be doing the rest of the work now.
1214          */
1215         if (bcn_priv->guardian_urb == urb) {
1216                 usb_submit_urb(bcn_priv->urb, GFP_ATOMIC);
1217         } else if (bcn_priv->urb == urb) {
1218                 dev_kfree_skb(entry->skb);
1219                 entry->skb = NULL;
1220         }
1221 }
1222
1223 /*
1224  * Device probe functions.
1225  */
1226 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1227 {
1228         u16 word;
1229         u8 *mac;
1230         u8 bbp;
1231
1232         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1233
1234         /*
1235          * Start validation of the data that has been read.
1236          */
1237         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1238         if (!is_valid_ether_addr(mac)) {
1239                 DECLARE_MAC_BUF(macbuf);
1240
1241                 random_ether_addr(mac);
1242                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1243         }
1244
1245         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1246         if (word == 0xffff) {
1247                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1248                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1249                                    ANTENNA_SW_DIVERSITY);
1250                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1251                                    ANTENNA_SW_DIVERSITY);
1252                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1253                                    LED_MODE_DEFAULT);
1254                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1255                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1256                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1257                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1258                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1259         }
1260
1261         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1262         if (word == 0xffff) {
1263                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1264                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1265                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1266                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1267                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1268         }
1269
1270         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1271         if (word == 0xffff) {
1272                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1273                                    DEFAULT_RSSI_OFFSET);
1274                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1275                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1276         }
1277
1278         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1279         if (word == 0xffff) {
1280                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1281                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1282                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1283         }
1284
1285         /*
1286          * Switch lower vgc bound to current BBP R17 value,
1287          * lower the value a bit for better quality.
1288          */
1289         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1290         bbp -= 6;
1291
1292         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1293         if (word == 0xffff) {
1294                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1295                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1296                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1297                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1298         }
1299
1300         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1301         if (word == 0xffff) {
1302                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1303                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1304                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1305                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1306         } else {
1307                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1308                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1309         }
1310
1311         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1312         if (word == 0xffff) {
1313                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1314                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1315                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1316                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1317         }
1318
1319         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1320         if (word == 0xffff) {
1321                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1322                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1323                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1324                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1325         }
1326
1327         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1328         if (word == 0xffff) {
1329                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1330                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1331                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1332                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1333         }
1334
1335         return 0;
1336 }
1337
1338 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1339 {
1340         u16 reg;
1341         u16 value;
1342         u16 eeprom;
1343
1344         /*
1345          * Read EEPROM word for configuration.
1346          */
1347         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1348
1349         /*
1350          * Identify RF chipset.
1351          */
1352         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1353         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1354         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1355
1356         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1357                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1358                 return -ENODEV;
1359         }
1360
1361         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1362             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1363             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1364             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1365             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1366             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1367                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1368                 return -ENODEV;
1369         }
1370
1371         /*
1372          * Identify default antenna configuration.
1373          */
1374         rt2x00dev->default_ant.tx =
1375             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1376         rt2x00dev->default_ant.rx =
1377             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1378
1379         /*
1380          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1381          * I am not 100% sure about this, but the legacy drivers do not
1382          * indicate antenna swapping in software is required when
1383          * diversity is enabled.
1384          */
1385         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1386                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1387         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1388                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1389
1390         /*
1391          * Store led mode, for correct led behaviour.
1392          */
1393 #ifdef CONFIG_RT2500USB_LEDS
1394         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1395
1396         rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1397         if (value == LED_MODE_TXRX_ACTIVITY)
1398                 rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1399                                    LED_TYPE_ACTIVITY);
1400 #endif /* CONFIG_RT2500USB_LEDS */
1401
1402         /*
1403          * Check if the BBP tuning should be disabled.
1404          */
1405         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1406         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1407                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1408
1409         /*
1410          * Read the RSSI <-> dBm offset information.
1411          */
1412         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1413         rt2x00dev->rssi_offset =
1414             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1415
1416         return 0;
1417 }
1418
1419 /*
1420  * RF value list for RF2522
1421  * Supports: 2.4 GHz
1422  */
1423 static const struct rf_channel rf_vals_bg_2522[] = {
1424         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1425         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1426         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1427         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1428         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1429         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1430         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1431         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1432         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1433         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1434         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1435         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1436         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1437         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1438 };
1439
1440 /*
1441  * RF value list for RF2523
1442  * Supports: 2.4 GHz
1443  */
1444 static const struct rf_channel rf_vals_bg_2523[] = {
1445         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1446         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1447         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1448         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1449         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1450         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1451         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1452         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1453         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1454         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1455         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1456         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1457         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1458         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1459 };
1460
1461 /*
1462  * RF value list for RF2524
1463  * Supports: 2.4 GHz
1464  */
1465 static const struct rf_channel rf_vals_bg_2524[] = {
1466         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1467         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1468         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1469         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1470         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1471         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1472         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1473         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1474         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1475         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1476         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1477         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1478         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1479         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1480 };
1481
1482 /*
1483  * RF value list for RF2525
1484  * Supports: 2.4 GHz
1485  */
1486 static const struct rf_channel rf_vals_bg_2525[] = {
1487         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1488         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1489         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1490         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1491         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1492         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1493         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1494         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1495         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1496         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1497         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1498         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1499         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1500         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1501 };
1502
1503 /*
1504  * RF value list for RF2525e
1505  * Supports: 2.4 GHz
1506  */
1507 static const struct rf_channel rf_vals_bg_2525e[] = {
1508         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1509         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1510         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1511         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1512         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1513         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1514         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1515         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1516         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1517         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1518         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1519         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1520         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1521         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1522 };
1523
1524 /*
1525  * RF value list for RF5222
1526  * Supports: 2.4 GHz & 5.2 GHz
1527  */
1528 static const struct rf_channel rf_vals_5222[] = {
1529         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1530         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1531         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1532         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1533         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1534         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1535         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1536         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1537         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1538         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1539         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1540         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1541         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1542         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1543
1544         /* 802.11 UNI / HyperLan 2 */
1545         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1546         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1547         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1548         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1549         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1550         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1551         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1552         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1553
1554         /* 802.11 HyperLan 2 */
1555         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1556         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1557         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1558         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1559         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1560         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1561         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1562         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1563         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1564         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1565
1566         /* 802.11 UNII */
1567         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1568         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1569         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1570         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1571         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1572 };
1573
1574 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1575 {
1576         struct hw_mode_spec *spec = &rt2x00dev->spec;
1577         u8 *txpower;
1578         unsigned int i;
1579
1580         /*
1581          * Initialize all hw fields.
1582          */
1583         rt2x00dev->hw->flags =
1584             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1585             IEEE80211_HW_RX_INCLUDES_FCS |
1586             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1587             IEEE80211_HW_SIGNAL_DBM;
1588
1589         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1590
1591         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1592         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1593                                 rt2x00_eeprom_addr(rt2x00dev,
1594                                                    EEPROM_MAC_ADDR_0));
1595
1596         /*
1597          * Convert tx_power array in eeprom.
1598          */
1599         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1600         for (i = 0; i < 14; i++)
1601                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1602
1603         /*
1604          * Initialize hw_mode information.
1605          */
1606         spec->supported_bands = SUPPORT_BAND_2GHZ;
1607         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1608         spec->tx_power_a = NULL;
1609         spec->tx_power_bg = txpower;
1610         spec->tx_power_default = DEFAULT_TXPOWER;
1611
1612         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1613                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1614                 spec->channels = rf_vals_bg_2522;
1615         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1616                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1617                 spec->channels = rf_vals_bg_2523;
1618         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1619                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1620                 spec->channels = rf_vals_bg_2524;
1621         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1622                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1623                 spec->channels = rf_vals_bg_2525;
1624         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1625                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1626                 spec->channels = rf_vals_bg_2525e;
1627         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1628                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1629                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1630                 spec->channels = rf_vals_5222;
1631         }
1632 }
1633
1634 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1635 {
1636         int retval;
1637
1638         /*
1639          * Allocate eeprom data.
1640          */
1641         retval = rt2500usb_validate_eeprom(rt2x00dev);
1642         if (retval)
1643                 return retval;
1644
1645         retval = rt2500usb_init_eeprom(rt2x00dev);
1646         if (retval)
1647                 return retval;
1648
1649         /*
1650          * Initialize hw specifications.
1651          */
1652         rt2500usb_probe_hw_mode(rt2x00dev);
1653
1654         /*
1655          * This device requires the atim queue
1656          */
1657         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1658         __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1659         __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
1660
1661         /*
1662          * Set the rssi offset.
1663          */
1664         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1665
1666         return 0;
1667 }
1668
1669 /*
1670  * IEEE80211 stack callback functions.
1671  */
1672 static int rt2500usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
1673 {
1674         struct rt2x00_dev *rt2x00dev = hw->priv;
1675         struct usb_device *usb_dev =
1676                 interface_to_usbdev(to_usb_interface(rt2x00dev->dev));
1677         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
1678         struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
1679         struct queue_entry_priv_usb_bcn *bcn_priv;
1680         struct skb_frame_desc *skbdesc;
1681         struct txentry_desc txdesc;
1682         int pipe = usb_sndbulkpipe(usb_dev, 1);
1683         int length;
1684         u16 reg;
1685
1686         if (unlikely(!intf->beacon))
1687                 return -ENOBUFS;
1688
1689         bcn_priv = intf->beacon->priv_data;
1690
1691         /*
1692          * Copy all TX descriptor information into txdesc,
1693          * after that we are free to use the skb->cb array
1694          * for our information.
1695          */
1696         intf->beacon->skb = skb;
1697         rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc);
1698
1699         /*
1700          * Add the descriptor in front of the skb.
1701          */
1702         skb_push(skb, intf->beacon->queue->desc_size);
1703         memset(skb->data, 0, intf->beacon->queue->desc_size);
1704
1705         /*
1706          * Fill in skb descriptor
1707          */
1708         skbdesc = get_skb_frame_desc(skb);
1709         memset(skbdesc, 0, sizeof(*skbdesc));
1710         skbdesc->desc = skb->data;
1711         skbdesc->desc_len = intf->beacon->queue->desc_size;
1712         skbdesc->entry = intf->beacon;
1713
1714         /*
1715          * Disable beaconing while we are reloading the beacon data,
1716          * otherwise we might be sending out invalid data.
1717          */
1718         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1719         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
1720         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
1721         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1722         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1723
1724         rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
1725
1726         /*
1727          * USB devices cannot blindly pass the skb->len as the
1728          * length of the data to usb_fill_bulk_urb. Pass the skb
1729          * to the driver to determine what the length should be.
1730          */
1731         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1732
1733         usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
1734                           skb->data, length, rt2500usb_beacondone,
1735                           intf->beacon);
1736
1737         /*
1738          * Second we need to create the guardian byte.
1739          * We only need a single byte, so lets recycle
1740          * the 'flags' field we are not using for beacons.
1741          */
1742         bcn_priv->guardian_data = 0;
1743         usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
1744                           &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
1745                           intf->beacon);
1746
1747         /*
1748          * Send out the guardian byte.
1749          */
1750         usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
1751
1752         /*
1753          * Enable beacon generation.
1754          */
1755         rt2500usb_kick_tx_queue(rt2x00dev, QID_BEACON);
1756
1757         return 0;
1758 }
1759
1760 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1761         .tx                     = rt2x00mac_tx,
1762         .start                  = rt2x00mac_start,
1763         .stop                   = rt2x00mac_stop,
1764         .add_interface          = rt2x00mac_add_interface,
1765         .remove_interface       = rt2x00mac_remove_interface,
1766         .config                 = rt2x00mac_config,
1767         .config_interface       = rt2x00mac_config_interface,
1768         .configure_filter       = rt2x00mac_configure_filter,
1769         .get_stats              = rt2x00mac_get_stats,
1770         .bss_info_changed       = rt2x00mac_bss_info_changed,
1771         .conf_tx                = rt2x00mac_conf_tx,
1772         .get_tx_stats           = rt2x00mac_get_tx_stats,
1773         .beacon_update          = rt2500usb_beacon_update,
1774 };
1775
1776 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1777         .probe_hw               = rt2500usb_probe_hw,
1778         .initialize             = rt2x00usb_initialize,
1779         .uninitialize           = rt2x00usb_uninitialize,
1780         .init_rxentry           = rt2x00usb_init_rxentry,
1781         .init_txentry           = rt2x00usb_init_txentry,
1782         .set_device_state       = rt2500usb_set_device_state,
1783         .link_stats             = rt2500usb_link_stats,
1784         .reset_tuner            = rt2500usb_reset_tuner,
1785         .link_tuner             = rt2500usb_link_tuner,
1786         .write_tx_desc          = rt2500usb_write_tx_desc,
1787         .write_tx_data          = rt2x00usb_write_tx_data,
1788         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1789         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1790         .fill_rxdone            = rt2500usb_fill_rxdone,
1791         .config_filter          = rt2500usb_config_filter,
1792         .config_intf            = rt2500usb_config_intf,
1793         .config_erp             = rt2500usb_config_erp,
1794         .config                 = rt2500usb_config,
1795 };
1796
1797 static const struct data_queue_desc rt2500usb_queue_rx = {
1798         .entry_num              = RX_ENTRIES,
1799         .data_size              = DATA_FRAME_SIZE,
1800         .desc_size              = RXD_DESC_SIZE,
1801         .priv_size              = sizeof(struct queue_entry_priv_usb),
1802 };
1803
1804 static const struct data_queue_desc rt2500usb_queue_tx = {
1805         .entry_num              = TX_ENTRIES,
1806         .data_size              = DATA_FRAME_SIZE,
1807         .desc_size              = TXD_DESC_SIZE,
1808         .priv_size              = sizeof(struct queue_entry_priv_usb),
1809 };
1810
1811 static const struct data_queue_desc rt2500usb_queue_bcn = {
1812         .entry_num              = BEACON_ENTRIES,
1813         .data_size              = MGMT_FRAME_SIZE,
1814         .desc_size              = TXD_DESC_SIZE,
1815         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1816 };
1817
1818 static const struct data_queue_desc rt2500usb_queue_atim = {
1819         .entry_num              = ATIM_ENTRIES,
1820         .data_size              = DATA_FRAME_SIZE,
1821         .desc_size              = TXD_DESC_SIZE,
1822         .priv_size              = sizeof(struct queue_entry_priv_usb),
1823 };
1824
1825 static const struct rt2x00_ops rt2500usb_ops = {
1826         .name           = KBUILD_MODNAME,
1827         .max_sta_intf   = 1,
1828         .max_ap_intf    = 1,
1829         .eeprom_size    = EEPROM_SIZE,
1830         .rf_size        = RF_SIZE,
1831         .tx_queues      = NUM_TX_QUEUES,
1832         .rx             = &rt2500usb_queue_rx,
1833         .tx             = &rt2500usb_queue_tx,
1834         .bcn            = &rt2500usb_queue_bcn,
1835         .atim           = &rt2500usb_queue_atim,
1836         .lib            = &rt2500usb_rt2x00_ops,
1837         .hw             = &rt2500usb_mac80211_ops,
1838 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1839         .debugfs        = &rt2500usb_rt2x00debug,
1840 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1841 };
1842
1843 /*
1844  * rt2500usb module information.
1845  */
1846 static struct usb_device_id rt2500usb_device_table[] = {
1847         /* ASUS */
1848         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1849         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1850         /* Belkin */
1851         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1852         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1853         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1854         /* Cisco Systems */
1855         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1856         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1857         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1858         /* Conceptronic */
1859         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1860         /* D-LINK */
1861         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1862         /* Gigabyte */
1863         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1864         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1865         /* Hercules */
1866         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1867         /* Melco */
1868         { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
1869         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1870         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1871         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1872         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1873         /* MSI */
1874         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1875         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1876         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1877         /* Ralink */
1878         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1879         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1880         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1881         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1882         /* Siemens */
1883         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1884         /* SMC */
1885         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1886         /* Spairon */
1887         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1888         /* Trust */
1889         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1890         /* Zinwell */
1891         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1892         { 0, }
1893 };
1894
1895 MODULE_AUTHOR(DRV_PROJECT);
1896 MODULE_VERSION(DRV_VERSION);
1897 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1898 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1899 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1900 MODULE_LICENSE("GPL");
1901
1902 static struct usb_driver rt2500usb_driver = {
1903         .name           = KBUILD_MODNAME,
1904         .id_table       = rt2500usb_device_table,
1905         .probe          = rt2x00usb_probe,
1906         .disconnect     = rt2x00usb_disconnect,
1907         .suspend        = rt2x00usb_suspend,
1908         .resume         = rt2x00usb_resume,
1909 };
1910
1911 static int __init rt2500usb_init(void)
1912 {
1913         return usb_register(&rt2500usb_driver);
1914 }
1915
1916 static void __exit rt2500usb_exit(void)
1917 {
1918         usb_deregister(&rt2500usb_driver);
1919 }
1920
1921 module_init(rt2500usb_init);
1922 module_exit(rt2500usb_exit);