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rt2x00: Add per-interface structure
[firewire-audio.git] / drivers / net / wireless / rt2x00 / rt2500usb.c
blob31258ee24ee3457a8908259c5669067ebe0f5303
1 /*
2 Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21 /*
22 Module: rt2500usb
23 Abstract: rt2500usb device specific routines.
24 Supported chipsets: RT2570.
25 */
26
27 #include <linux/delay.h>
28 #include <linux/etherdevice.h>
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/usb.h>
33
34 #include "rt2x00.h"
35 #include "rt2x00usb.h"
36 #include "rt2500usb.h"
37
38 /*
39 * Register access.
40 * All access to the CSR registers will go through the methods
41 * rt2500usb_register_read and rt2500usb_register_write.
42 * BBP and RF register require indirect register access,
43 * and use the CSR registers BBPCSR and RFCSR to achieve this.
44 * These indirect registers work with busy bits,
45 * and we will try maximal REGISTER_BUSY_COUNT times to access
46 * the register while taking a REGISTER_BUSY_DELAY us delay
47 * between each attampt. When the busy bit is still set at that time,
48 * the access attempt is considered to have failed,
49 * and we will print an error.
50 * If the usb_cache_mutex is already held then the _lock variants must
51 * be used instead.
52 */
53 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
54 const unsigned int offset,
55 u16 *value)
56 {
57 __le16 reg;
58 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
59 USB_VENDOR_REQUEST_IN, offset,
60 &reg, sizeof(u16), REGISTER_TIMEOUT);
61 *value = le16_to_cpu(reg);
62 }
63
64 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
65 const unsigned int offset,
66 u16 *value)
67 {
68 __le16 reg;
69 rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
70 USB_VENDOR_REQUEST_IN, offset,
71 &reg, sizeof(u16), REGISTER_TIMEOUT);
72 *value = le16_to_cpu(reg);
73 }
74
75 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
76 const unsigned int offset,
77 void *value, const u16 length)
78 {
79 int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
80 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
81 USB_VENDOR_REQUEST_IN, offset,
82 value, length, timeout);
83 }
84
85 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
86 const unsigned int offset,
87 u16 value)
88 {
89 __le16 reg = cpu_to_le16(value);
90 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
91 USB_VENDOR_REQUEST_OUT, offset,
92 &reg, sizeof(u16), REGISTER_TIMEOUT);
93 }
94
95 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
96 const unsigned int offset,
97 u16 value)
98 {
99 __le16 reg = cpu_to_le16(value);
100 rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
101 USB_VENDOR_REQUEST_OUT, offset,
102 &reg, sizeof(u16), REGISTER_TIMEOUT);
103 }
104
105 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
106 const unsigned int offset,
107 void *value, const u16 length)
108 {
109 int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
110 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
111 USB_VENDOR_REQUEST_OUT, offset,
112 value, length, timeout);
113 }
114
115 static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev)
116 {
117 u16 reg;
118 unsigned int i;
119
120 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
121 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR8, &reg);
122 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
123 break;
124 udelay(REGISTER_BUSY_DELAY);
125 }
126
127 return reg;
128 }
129
130 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
131 const unsigned int word, const u8 value)
132 {
133 u16 reg;
134
135 mutex_lock(&rt2x00dev->usb_cache_mutex);
136
137 /*
138 * Wait until the BBP becomes ready.
139 */
140 reg = rt2500usb_bbp_check(rt2x00dev);
141 if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
142 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
143 mutex_unlock(&rt2x00dev->usb_cache_mutex);
144 return;
145 }
146
147 /*
148 * Write the data into the BBP.
149 */
150 reg = 0;
151 rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
152 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
153 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
154
155 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
156
157 mutex_unlock(&rt2x00dev->usb_cache_mutex);
158 }
159
160 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
161 const unsigned int word, u8 *value)
162 {
163 u16 reg;
164
165 mutex_lock(&rt2x00dev->usb_cache_mutex);
166
167 /*
168 * Wait until the BBP becomes ready.
169 */
170 reg = rt2500usb_bbp_check(rt2x00dev);
171 if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
172 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
173 return;
174 }
175
176 /*
177 * Write the request into the BBP.
178 */
179 reg = 0;
180 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
181 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
182
183 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
184
185 /*
186 * Wait until the BBP becomes ready.
187 */
188 reg = rt2500usb_bbp_check(rt2x00dev);
189 if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
190 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
191 *value = 0xff;
192 mutex_unlock(&rt2x00dev->usb_cache_mutex);
193 return;
194 }
195
196 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
197 *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
198
199 mutex_unlock(&rt2x00dev->usb_cache_mutex);
200 }
201
202 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
203 const unsigned int word, const u32 value)
204 {
205 u16 reg;
206 unsigned int i;
207
208 if (!word)
209 return;
210
211 mutex_lock(&rt2x00dev->usb_cache_mutex);
212
213 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
214 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR10, &reg);
215 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
216 goto rf_write;
217 udelay(REGISTER_BUSY_DELAY);
218 }
219
220 mutex_unlock(&rt2x00dev->usb_cache_mutex);
221 ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
222 return;
223
224 rf_write:
225 reg = 0;
226 rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
227 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
228
229 reg = 0;
230 rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
231 rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
232 rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
233 rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
234
235 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
236 rt2x00_rf_write(rt2x00dev, word, value);
237
238 mutex_unlock(&rt2x00dev->usb_cache_mutex);
239 }
240
241 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
242 #define CSR_OFFSET(__word) ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
243
244 static void rt2500usb_read_csr(struct rt2x00_dev *rt2x00dev,
245 const unsigned int word, u32 *data)
246 {
247 rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
248 }
249
250 static void rt2500usb_write_csr(struct rt2x00_dev *rt2x00dev,
251 const unsigned int word, u32 data)
252 {
253 rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
254 }
255
256 static const struct rt2x00debug rt2500usb_rt2x00debug = {
257 .owner = THIS_MODULE,
258 .csr = {
259 .read = rt2500usb_read_csr,
260 .write = rt2500usb_write_csr,
261 .word_size = sizeof(u16),
262 .word_count = CSR_REG_SIZE / sizeof(u16),
263 },
264 .eeprom = {
265 .read = rt2x00_eeprom_read,
266 .write = rt2x00_eeprom_write,
267 .word_size = sizeof(u16),
268 .word_count = EEPROM_SIZE / sizeof(u16),
269 },
270 .bbp = {
271 .read = rt2500usb_bbp_read,
272 .write = rt2500usb_bbp_write,
273 .word_size = sizeof(u8),
274 .word_count = BBP_SIZE / sizeof(u8),
275 },
276 .rf = {
277 .read = rt2x00_rf_read,
278 .write = rt2500usb_rf_write,
279 .word_size = sizeof(u32),
280 .word_count = RF_SIZE / sizeof(u32),
281 },
282 };
283 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
284
285 /*
286 * Configuration handlers.
287 */
288 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
289 struct rt2x00_intf *intf,
290 struct rt2x00intf_conf *conf,
291 const unsigned int flags)
292 {
293 unsigned int bcn_preload;
294 u16 reg;
295
296 if (flags & CONFIG_UPDATE_TYPE) {
297 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
298
299 /*
300 * Enable beacon config
301 */
302 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
303 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
304 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
305 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
306 2 * (conf->type != IEEE80211_IF_TYPE_STA));
307 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
308
309 /*
310 * Enable synchronisation.
311 */
312 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
313 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
314 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
315
316 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
317 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
318 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN,
319 (conf->sync == TSF_SYNC_BEACON));
320 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
321 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
322 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
323 }
324
325 if (flags & CONFIG_UPDATE_MAC)
326 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
327 (3 * sizeof(__le16)));
328
329 if (flags & CONFIG_UPDATE_BSSID)
330 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
331 (3 * sizeof(__le16)));
332 }
333
334 static int rt2500usb_config_preamble(struct rt2x00_dev *rt2x00dev,
335 const int short_preamble,
336 const int ack_timeout,
337 const int ack_consume_time)
338 {
339 u16 reg;
340
341 /*
342 * When in atomic context, we should let rt2x00lib
343 * try this configuration again later.
344 */
345 if (in_atomic())
346 return -EAGAIN;
347
348 rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
349 rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, ack_timeout);
350 rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
351
352 rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
353 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
354 !!short_preamble);
355 rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
356
357 return 0;
358 }
359
360 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
361 const int phymode,
362 const int basic_rate_mask)
363 {
364 rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
365
366 if (phymode == HWMODE_B) {
367 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
368 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
369 } else {
370 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
371 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
372 }
373 }
374
375 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
376 struct rf_channel *rf, const int txpower)
377 {
378 /*
379 * Set TXpower.
380 */
381 rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
382
383 /*
384 * For RT2525E we should first set the channel to half band higher.
385 */
386 if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
387 static const u32 vals[] = {
388 0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
389 0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
390 0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
391 0x00000902, 0x00000906
392 };
393
394 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
395 if (rf->rf4)
396 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
397 }
398
399 rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
400 rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
401 rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
402 if (rf->rf4)
403 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
404 }
405
406 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
407 const int txpower)
408 {
409 u32 rf3;
410
411 rt2x00_rf_read(rt2x00dev, 3, &rf3);
412 rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
413 rt2500usb_rf_write(rt2x00dev, 3, rf3);
414 }
415
416 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
417 struct antenna_setup *ant)
418 {
419 u8 r2;
420 u8 r14;
421 u16 csr5;
422 u16 csr6;
423
424 rt2500usb_bbp_read(rt2x00dev, 2, &r2);
425 rt2500usb_bbp_read(rt2x00dev, 14, &r14);
426 rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
427 rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
428
429 /*
430 * Configure the TX antenna.
431 */
432 switch (ant->tx) {
433 case ANTENNA_HW_DIVERSITY:
434 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
435 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
436 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
437 break;
438 case ANTENNA_A:
439 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
440 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
441 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
442 break;
443 case ANTENNA_SW_DIVERSITY:
444 /*
445 * NOTE: We should never come here because rt2x00lib is
446 * supposed to catch this and send us the correct antenna
447 * explicitely. However we are nog going to bug about this.
448 * Instead, just default to antenna B.
449 */
450 case ANTENNA_B:
451 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
452 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
453 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
454 break;
455 }
456
457 /*
458 * Configure the RX antenna.
459 */
460 switch (ant->rx) {
461 case ANTENNA_HW_DIVERSITY:
462 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
463 break;
464 case ANTENNA_A:
465 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
466 break;
467 case ANTENNA_SW_DIVERSITY:
468 /*
469 * NOTE: We should never come here because rt2x00lib is
470 * supposed to catch this and send us the correct antenna
471 * explicitely. However we are nog going to bug about this.
472 * Instead, just default to antenna B.
473 */
474 case ANTENNA_B:
475 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
476 break;
477 }
478
479 /*
480 * RT2525E and RT5222 need to flip TX I/Q
481 */
482 if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
483 rt2x00_rf(&rt2x00dev->chip, RF5222)) {
484 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
485 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
486 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
487
488 /*
489 * RT2525E does not need RX I/Q Flip.
490 */
491 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
492 rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
493 } else {
494 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
495 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
496 }
497
498 rt2500usb_bbp_write(rt2x00dev, 2, r2);
499 rt2500usb_bbp_write(rt2x00dev, 14, r14);
500 rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
501 rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
502 }
503
504 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
505 struct rt2x00lib_conf *libconf)
506 {
507 u16 reg;
508
509 rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
510
511 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
512 rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
513 libconf->conf->beacon_int * 4);
514 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
515 }
516
517 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
518 struct rt2x00lib_conf *libconf,
519 const unsigned int flags)
520 {
521 if (flags & CONFIG_UPDATE_PHYMODE)
522 rt2500usb_config_phymode(rt2x00dev, libconf->phymode,
523 libconf->basic_rates);
524 if (flags & CONFIG_UPDATE_CHANNEL)
525 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
526 libconf->conf->power_level);
527 if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
528 rt2500usb_config_txpower(rt2x00dev,
529 libconf->conf->power_level);
530 if (flags & CONFIG_UPDATE_ANTENNA)
531 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
532 if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
533 rt2500usb_config_duration(rt2x00dev, libconf);
534 }
535
536 /*
537 * LED functions.
538 */
539 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
540 {
541 u16 reg;
542
543 rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
544 rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
545 rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
546 rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
547
548 rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
549 rt2x00_set_field16(&reg, MAC_CSR20_LINK,
550 (rt2x00dev->led_mode != LED_MODE_ASUS));
551 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY,
552 (rt2x00dev->led_mode != LED_MODE_TXRX_ACTIVITY));
553 rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
554 }
555
556 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
557 {
558 u16 reg;
559
560 rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
561 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
562 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
563 rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
564 }
565
566 /*
567 * Link tuning
568 */
569 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
570 struct link_qual *qual)
571 {
572 u16 reg;
573
574 /*
575 * Update FCS error count from register.
576 */
577 rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
578 qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
579
580 /*
581 * Update False CCA count from register.
582 */
583 rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
584 qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
585 }
586
587 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
588 {
589 u16 eeprom;
590 u16 value;
591
592 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
593 value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
594 rt2500usb_bbp_write(rt2x00dev, 24, value);
595
596 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
597 value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
598 rt2500usb_bbp_write(rt2x00dev, 25, value);
599
600 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
601 value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
602 rt2500usb_bbp_write(rt2x00dev, 61, value);
603
604 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
605 value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
606 rt2500usb_bbp_write(rt2x00dev, 17, value);
607
608 rt2x00dev->link.vgc_level = value;
609 }
610
611 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
612 {
613 int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
614 u16 bbp_thresh;
615 u16 vgc_bound;
616 u16 sens;
617 u16 r24;
618 u16 r25;
619 u16 r61;
620 u16 r17_sens;
621 u8 r17;
622 u8 up_bound;
623 u8 low_bound;
624
625 /*
626 * Read current r17 value, as well as the sensitivity values
627 * for the r17 register.
628 */
629 rt2500usb_bbp_read(rt2x00dev, 17, &r17);
630 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
631
632 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
633 up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
634 low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
635
636 /*
637 * If we are not associated, we should go straight to the
638 * dynamic CCA tuning.
639 */
640 if (!rt2x00dev->intf_associated)
641 goto dynamic_cca_tune;
642
643 /*
644 * Determine the BBP tuning threshold and correctly
645 * set BBP 24, 25 and 61.
646 */
647 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
648 bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
649
650 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
651 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
652 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
653
654 if ((rssi + bbp_thresh) > 0) {
655 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
656 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
657 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
658 } else {
659 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
660 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
661 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
662 }
663
664 rt2500usb_bbp_write(rt2x00dev, 24, r24);
665 rt2500usb_bbp_write(rt2x00dev, 25, r25);
666 rt2500usb_bbp_write(rt2x00dev, 61, r61);
667
668 /*
669 * A too low RSSI will cause too much false CCA which will
670 * then corrupt the R17 tuning. To remidy this the tuning should
671 * be stopped (While making sure the R17 value will not exceed limits)
672 */
673 if (rssi >= -40) {
674 if (r17 != 0x60)
675 rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
676 return;
677 }
678
679 /*
680 * Special big-R17 for short distance
681 */
682 if (rssi >= -58) {
683 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
684 if (r17 != sens)
685 rt2500usb_bbp_write(rt2x00dev, 17, sens);
686 return;
687 }
688
689 /*
690 * Special mid-R17 for middle distance
691 */
692 if (rssi >= -74) {
693 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
694 if (r17 != sens)
695 rt2500usb_bbp_write(rt2x00dev, 17, sens);
696 return;
697 }
698
699 /*
700 * Leave short or middle distance condition, restore r17
701 * to the dynamic tuning range.
702 */
703 low_bound = 0x32;
704 if (rssi < -77)
705 up_bound -= (-77 - rssi);
706
707 if (up_bound < low_bound)
708 up_bound = low_bound;
709
710 if (r17 > up_bound) {
711 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
712 rt2x00dev->link.vgc_level = up_bound;
713 return;
714 }
715
716 dynamic_cca_tune:
717
718 /*
719 * R17 is inside the dynamic tuning range,
720 * start tuning the link based on the false cca counter.
721 */
722 if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
723 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
724 rt2x00dev->link.vgc_level = r17;
725 } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
726 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
727 rt2x00dev->link.vgc_level = r17;
728 }
729 }
730
731 /*
732 * Initialization functions.
733 */
734 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
735 {
736 u16 reg;
737
738 rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
739 USB_MODE_TEST, REGISTER_TIMEOUT);
740 rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
741 0x00f0, REGISTER_TIMEOUT);
742
743 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
744 rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
745 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
746
747 rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
748 rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
749
750 rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
751 rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
752 rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
753 rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
754 rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
755
756 rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
757 rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
758 rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
759 rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
760 rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
761
762 rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
763 rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
764 rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
765 rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
766 rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
767 rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
768
769 rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
770 rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
771 rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
772 rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
773 rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
774 rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
775
776 rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
777 rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
778 rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
779 rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
780 rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
781 rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
782
783 rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
784 rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
785 rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
786 rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
787 rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
788 rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
789
790 rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
791 rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
792
793 if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
794 return -EBUSY;
795
796 rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
797 rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
798 rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
799 rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
800 rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
801
802 if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
803 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
804 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
805 } else {
806 reg = 0;
807 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
808 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
809 }
810 rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
811
812 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
813 rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
814 rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
815 rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
816
817 rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
818 rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
819 rt2x00dev->rx->data_size);
820 rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
821
822 rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
823 rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
824 rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
825 rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
826
827 rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
828 rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
829 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
830
831 rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
832 rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
833 rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
834
835 rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
836 rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
837 rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
838
839 return 0;
840 }
841
842 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
843 {
844 unsigned int i;
845 u16 eeprom;
846 u8 value;
847 u8 reg_id;
848
849 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
850 rt2500usb_bbp_read(rt2x00dev, 0, &value);
851 if ((value != 0xff) && (value != 0x00))
852 goto continue_csr_init;
853 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
854 udelay(REGISTER_BUSY_DELAY);
855 }
856
857 ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
858 return -EACCES;
859
860 continue_csr_init:
861 rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
862 rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
863 rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
864 rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
865 rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
866 rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
867 rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
868 rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
869 rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
870 rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
871 rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
872 rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
873 rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
874 rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
875 rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
876 rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
877 rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
878 rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
879 rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
880 rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
881 rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
882 rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
883 rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
884 rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
885 rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
886 rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
887 rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
888 rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
889 rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
890 rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
891 rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
892
893 DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
894 for (i = 0; i < EEPROM_BBP_SIZE; i++) {
895 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
896
897 if (eeprom != 0xffff && eeprom != 0x0000) {
898 reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
899 value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
900 DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
901 reg_id, value);
902 rt2500usb_bbp_write(rt2x00dev, reg_id, value);
903 }
904 }
905 DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
906
907 return 0;
908 }
909
910 /*
911 * Device state switch handlers.
912 */
913 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
914 enum dev_state state)
915 {
916 u16 reg;
917
918 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
919 rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
920 state == STATE_RADIO_RX_OFF);
921 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
922 }
923
924 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
925 {
926 /*
927 * Initialize all registers.
928 */
929 if (rt2500usb_init_registers(rt2x00dev) ||
930 rt2500usb_init_bbp(rt2x00dev)) {
931 ERROR(rt2x00dev, "Register initialization failed.\n");
932 return -EIO;
933 }
934
935 /*
936 * Enable LED
937 */
938 rt2500usb_enable_led(rt2x00dev);
939
940 return 0;
941 }
942
943 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
944 {
945 /*
946 * Disable LED
947 */
948 rt2500usb_disable_led(rt2x00dev);
949
950 rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
951 rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
952
953 /*
954 * Disable synchronisation.
955 */
956 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
957
958 rt2x00usb_disable_radio(rt2x00dev);
959 }
960
961 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
962 enum dev_state state)
963 {
964 u16 reg;
965 u16 reg2;
966 unsigned int i;
967 char put_to_sleep;
968 char bbp_state;
969 char rf_state;
970
971 put_to_sleep = (state != STATE_AWAKE);
972
973 reg = 0;
974 rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
975 rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
976 rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
977 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
978 rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
979 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
980
981 /*
982 * Device is not guaranteed to be in the requested state yet.
983 * We must wait until the register indicates that the
984 * device has entered the correct state.
985 */
986 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
987 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
988 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
989 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
990 if (bbp_state == state && rf_state == state)
991 return 0;
992 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
993 msleep(30);
994 }
995
996 NOTICE(rt2x00dev, "Device failed to enter state %d, "
997 "current device state: bbp %d and rf %d.\n",
998 state, bbp_state, rf_state);
999
1000 return -EBUSY;
1001 }
1002
1003 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1004 enum dev_state state)
1005 {
1006 int retval = 0;
1007
1008 switch (state) {
1009 case STATE_RADIO_ON:
1010 retval = rt2500usb_enable_radio(rt2x00dev);
1011 break;
1012 case STATE_RADIO_OFF:
1013 rt2500usb_disable_radio(rt2x00dev);
1014 break;
1015 case STATE_RADIO_RX_ON:
1016 case STATE_RADIO_RX_ON_LINK:
1017 rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
1018 break;
1019 case STATE_RADIO_RX_OFF:
1020 case STATE_RADIO_RX_OFF_LINK:
1021 rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
1022 break;
1023 case STATE_DEEP_SLEEP:
1024 case STATE_SLEEP:
1025 case STATE_STANDBY:
1026 case STATE_AWAKE:
1027 retval = rt2500usb_set_state(rt2x00dev, state);
1028 break;
1029 default:
1030 retval = -ENOTSUPP;
1031 break;
1032 }
1033
1034 return retval;
1035 }
1036
1037 /*
1038 * TX descriptor initialization
1039 */
1040 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1041 struct sk_buff *skb,
1042 struct txentry_desc *txdesc,
1043 struct ieee80211_tx_control *control)
1044 {
1045 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1046 __le32 *txd = skbdesc->desc;
1047 u32 word;
1048
1049 /*
1050 * Start writing the descriptor words.
1051 */
1052 rt2x00_desc_read(txd, 1, &word);
1053 rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1054 rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1055 rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1056 rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1057 rt2x00_desc_write(txd, 1, word);
1058
1059 rt2x00_desc_read(txd, 2, &word);
1060 rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1061 rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1062 rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1063 rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1064 rt2x00_desc_write(txd, 2, word);
1065
1066 rt2x00_desc_read(txd, 0, &word);
1067 rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1068 rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1069 test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1070 rt2x00_set_field32(&word, TXD_W0_ACK,
1071 test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1072 rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1073 test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1074 rt2x00_set_field32(&word, TXD_W0_OFDM,
1075 test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1076 rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1077 !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1078 rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1079 rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
1080 rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1081 rt2x00_desc_write(txd, 0, word);
1082 }
1083
1084 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1085 struct sk_buff *skb)
1086 {
1087 int length;
1088
1089 /*
1090 * The length _must_ be a multiple of 2,
1091 * but it must _not_ be a multiple of the USB packet size.
1092 */
1093 length = roundup(skb->len, 2);
1094 length += (2 * !(length % rt2x00dev->usb_maxpacket));
1095
1096 return length;
1097 }
1098
1099 /*
1100 * TX data initialization
1101 */
1102 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1103 unsigned int queue)
1104 {
1105 u16 reg;
1106
1107 if (queue != IEEE80211_TX_QUEUE_BEACON)
1108 return;
1109
1110 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1111 if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1112 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1113 /*
1114 * Beacon generation will fail initially.
1115 * To prevent this we need to register the TXRX_CSR19
1116 * register several times.
1117 */
1118 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1119 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1120 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1121 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1122 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1123 }
1124 }
1125
1126 /*
1127 * RX control handlers
1128 */
1129 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1130 struct rxdone_entry_desc *rxdesc)
1131 {
1132 struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data;
1133 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1134 __le32 *rxd =
1135 (__le32 *)(entry->skb->data +
1136 (priv_rx->urb->actual_length - entry->queue->desc_size));
1137 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
1138 int header_size = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
1139 u32 word0;
1140 u32 word1;
1141
1142 rt2x00_desc_read(rxd, 0, &word0);
1143 rt2x00_desc_read(rxd, 1, &word1);
1144
1145 rxdesc->flags = 0;
1146 if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1147 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1148 if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1149 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1150
1151 /*
1152 * Obtain the status about this packet.
1153 */
1154 rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1155 rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1156 entry->queue->rt2x00dev->rssi_offset;
1157 rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1158 rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1159 rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
1160
1161 /*
1162 * The data behind the ieee80211 header must be
1163 * aligned on a 4 byte boundary.
1164 */
1165 if (header_size % 4 == 0) {
1166 skb_push(entry->skb, 2);
1167 memmove(entry->skb->data, entry->skb->data + 2,
1168 entry->skb->len - 2);
1169 }
1170
1171 /*
1172 * Set descriptor pointer.
1173 */
1174 skbdesc->data = entry->skb->data;
1175 skbdesc->data_len = entry->queue->data_size;
1176 skbdesc->desc = entry->skb->data + rxdesc->size;
1177 skbdesc->desc_len = entry->queue->desc_size;
1178
1179 /*
1180 * Remove descriptor from skb buffer and trim the whole thing
1181 * down to only contain data.
1182 */
1183 skb_trim(entry->skb, rxdesc->size);
1184 }
1185
1186 /*
1187 * Interrupt functions.
1188 */
1189 static void rt2500usb_beacondone(struct urb *urb)
1190 {
1191 struct queue_entry *entry = (struct queue_entry *)urb->context;
1192 struct queue_entry_priv_usb_bcn *priv_bcn = entry->priv_data;
1193
1194 if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1195 return;
1196
1197 /*
1198 * Check if this was the guardian beacon,
1199 * if that was the case we need to send the real beacon now.
1200 * Otherwise we should free the sk_buffer, the device
1201 * should be doing the rest of the work now.
1202 */
1203 if (priv_bcn->guardian_urb == urb) {
1204 usb_submit_urb(priv_bcn->urb, GFP_ATOMIC);
1205 } else if (priv_bcn->urb == urb) {
1206 dev_kfree_skb(entry->skb);
1207 entry->skb = NULL;
1208 }
1209 }
1210
1211 /*
1212 * Device probe functions.
1213 */
1214 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1215 {
1216 u16 word;
1217 u8 *mac;
1218 u8 bbp;
1219
1220 rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1221
1222 /*
1223 * Start validation of the data that has been read.
1224 */
1225 mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1226 if (!is_valid_ether_addr(mac)) {
1227 DECLARE_MAC_BUF(macbuf);
1228
1229 random_ether_addr(mac);
1230 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1231 }
1232
1233 rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1234 if (word == 0xffff) {
1235 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1236 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1237 ANTENNA_SW_DIVERSITY);
1238 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1239 ANTENNA_SW_DIVERSITY);
1240 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1241 LED_MODE_DEFAULT);
1242 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1243 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1244 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1245 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1246 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1247 }
1248
1249 rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1250 if (word == 0xffff) {
1251 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1252 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1253 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1254 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1255 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1256 }
1257
1258 rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1259 if (word == 0xffff) {
1260 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1261 DEFAULT_RSSI_OFFSET);
1262 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1263 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1264 }
1265
1266 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1267 if (word == 0xffff) {
1268 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1269 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1270 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1271 }
1272
1273 /*
1274 * Switch lower vgc bound to current BBP R17 value,
1275 * lower the value a bit for better quality.
1276 */
1277 rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1278 bbp -= 6;
1279
1280 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1281 if (word == 0xffff) {
1282 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1283 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1284 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1285 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1286 }
1287
1288 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1289 if (word == 0xffff) {
1290 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1291 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1292 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1293 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1294 } else {
1295 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1296 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1297 }
1298
1299 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1300 if (word == 0xffff) {
1301 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1302 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1303 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1304 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1305 }
1306
1307 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1308 if (word == 0xffff) {
1309 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1310 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1311 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1312 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1313 }
1314
1315 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1316 if (word == 0xffff) {
1317 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1318 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1319 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1320 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1321 }
1322
1323 return 0;
1324 }
1325
1326 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1327 {
1328 u16 reg;
1329 u16 value;
1330 u16 eeprom;
1331
1332 /*
1333 * Read EEPROM word for configuration.
1334 */
1335 rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1336
1337 /*
1338 * Identify RF chipset.
1339 */
1340 value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1341 rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1342 rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1343
1344 if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1345 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1346 return -ENODEV;
1347 }
1348
1349 if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1350 !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1351 !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1352 !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1353 !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1354 !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1355 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1356 return -ENODEV;
1357 }
1358
1359 /*
1360 * Identify default antenna configuration.
1361 */
1362 rt2x00dev->default_ant.tx =
1363 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1364 rt2x00dev->default_ant.rx =
1365 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1366
1367 /*
1368 * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1369 * I am not 100% sure about this, but the legacy drivers do not
1370 * indicate antenna swapping in software is required when
1371 * diversity is enabled.
1372 */
1373 if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1374 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1375 if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1376 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1377
1378 /*
1379 * Store led mode, for correct led behaviour.
1380 */
1381 rt2x00dev->led_mode =
1382 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1383
1384 /*
1385 * Check if the BBP tuning should be disabled.
1386 */
1387 rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1388 if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1389 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1390
1391 /*
1392 * Read the RSSI <-> dBm offset information.
1393 */
1394 rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1395 rt2x00dev->rssi_offset =
1396 rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1397
1398 return 0;
1399 }
1400
1401 /*
1402 * RF value list for RF2522
1403 * Supports: 2.4 GHz
1404 */
1405 static const struct rf_channel rf_vals_bg_2522[] = {
1406 { 1, 0x00002050, 0x000c1fda, 0x00000101, 0 },
1407 { 2, 0x00002050, 0x000c1fee, 0x00000101, 0 },
1408 { 3, 0x00002050, 0x000c2002, 0x00000101, 0 },
1409 { 4, 0x00002050, 0x000c2016, 0x00000101, 0 },
1410 { 5, 0x00002050, 0x000c202a, 0x00000101, 0 },
1411 { 6, 0x00002050, 0x000c203e, 0x00000101, 0 },
1412 { 7, 0x00002050, 0x000c2052, 0x00000101, 0 },
1413 { 8, 0x00002050, 0x000c2066, 0x00000101, 0 },
1414 { 9, 0x00002050, 0x000c207a, 0x00000101, 0 },
1415 { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1416 { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1417 { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1418 { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1419 { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1420 };
1421
1422 /*
1423 * RF value list for RF2523
1424 * Supports: 2.4 GHz
1425 */
1426 static const struct rf_channel rf_vals_bg_2523[] = {
1427 { 1, 0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1428 { 2, 0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1429 { 3, 0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1430 { 4, 0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1431 { 5, 0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1432 { 6, 0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1433 { 7, 0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1434 { 8, 0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1435 { 9, 0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1436 { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1437 { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1438 { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1439 { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1440 { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1441 };
1442
1443 /*
1444 * RF value list for RF2524
1445 * Supports: 2.4 GHz
1446 */
1447 static const struct rf_channel rf_vals_bg_2524[] = {
1448 { 1, 0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1449 { 2, 0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1450 { 3, 0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1451 { 4, 0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1452 { 5, 0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1453 { 6, 0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1454 { 7, 0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1455 { 8, 0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1456 { 9, 0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1457 { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1458 { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1459 { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1460 { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1461 { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1462 };
1463
1464 /*
1465 * RF value list for RF2525
1466 * Supports: 2.4 GHz
1467 */
1468 static const struct rf_channel rf_vals_bg_2525[] = {
1469 { 1, 0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1470 { 2, 0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1471 { 3, 0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1472 { 4, 0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1473 { 5, 0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1474 { 6, 0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1475 { 7, 0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1476 { 8, 0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1477 { 9, 0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1478 { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1479 { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1480 { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1481 { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1482 { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1483 };
1484
1485 /*
1486 * RF value list for RF2525e
1487 * Supports: 2.4 GHz
1488 */
1489 static const struct rf_channel rf_vals_bg_2525e[] = {
1490 { 1, 0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1491 { 2, 0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1492 { 3, 0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1493 { 4, 0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1494 { 5, 0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1495 { 6, 0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1496 { 7, 0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1497 { 8, 0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1498 { 9, 0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1499 { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1500 { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1501 { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1502 { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1503 { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1504 };
1505
1506 /*
1507 * RF value list for RF5222
1508 * Supports: 2.4 GHz & 5.2 GHz
1509 */
1510 static const struct rf_channel rf_vals_5222[] = {
1511 { 1, 0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1512 { 2, 0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1513 { 3, 0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1514 { 4, 0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1515 { 5, 0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1516 { 6, 0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1517 { 7, 0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1518 { 8, 0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1519 { 9, 0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1520 { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1521 { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1522 { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1523 { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1524 { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1525
1526 /* 802.11 UNI / HyperLan 2 */
1527 { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1528 { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1529 { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1530 { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1531 { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1532 { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1533 { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1534 { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1535
1536 /* 802.11 HyperLan 2 */
1537 { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1538 { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1539 { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1540 { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1541 { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1542 { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1543 { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1544 { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1545 { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1546 { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1547
1548 /* 802.11 UNII */
1549 { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1550 { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1551 { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1552 { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1553 { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1554 };
1555
1556 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1557 {
1558 struct hw_mode_spec *spec = &rt2x00dev->spec;
1559 u8 *txpower;
1560 unsigned int i;
1561
1562 /*
1563 * Initialize all hw fields.
1564 */
1565 rt2x00dev->hw->flags =
1566 IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1567 IEEE80211_HW_RX_INCLUDES_FCS |
1568 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1569 rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1570 rt2x00dev->hw->max_signal = MAX_SIGNAL;
1571 rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1572 rt2x00dev->hw->queues = 2;
1573
1574 SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1575 SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1576 rt2x00_eeprom_addr(rt2x00dev,
1577 EEPROM_MAC_ADDR_0));
1578
1579 /*
1580 * Convert tx_power array in eeprom.
1581 */
1582 txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1583 for (i = 0; i < 14; i++)
1584 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1585
1586 /*
1587 * Initialize hw_mode information.
1588 */
1589 spec->num_modes = 2;
1590 spec->num_rates = 12;
1591 spec->tx_power_a = NULL;
1592 spec->tx_power_bg = txpower;
1593 spec->tx_power_default = DEFAULT_TXPOWER;
1594
1595 if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1596 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1597 spec->channels = rf_vals_bg_2522;
1598 } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1599 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1600 spec->channels = rf_vals_bg_2523;
1601 } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1602 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1603 spec->channels = rf_vals_bg_2524;
1604 } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1605 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1606 spec->channels = rf_vals_bg_2525;
1607 } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1608 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1609 spec->channels = rf_vals_bg_2525e;
1610 } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1611 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1612 spec->channels = rf_vals_5222;
1613 spec->num_modes = 3;
1614 }
1615 }
1616
1617 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1618 {
1619 int retval;
1620
1621 /*
1622 * Allocate eeprom data.
1623 */
1624 retval = rt2500usb_validate_eeprom(rt2x00dev);
1625 if (retval)
1626 return retval;
1627
1628 retval = rt2500usb_init_eeprom(rt2x00dev);
1629 if (retval)
1630 return retval;
1631
1632 /*
1633 * Initialize hw specifications.
1634 */
1635 rt2500usb_probe_hw_mode(rt2x00dev);
1636
1637 /*
1638 * This device requires the atim queue
1639 */
1640 __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1641 __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1642
1643 /*
1644 * Set the rssi offset.
1645 */
1646 rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1647
1648 return 0;
1649 }
1650
1651 /*
1652 * IEEE80211 stack callback functions.
1653 */
1654 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1655 unsigned int changed_flags,
1656 unsigned int *total_flags,
1657 int mc_count,
1658 struct dev_addr_list *mc_list)
1659 {
1660 struct rt2x00_dev *rt2x00dev = hw->priv;
1661 u16 reg;
1662
1663 /*
1664 * Mask off any flags we are going to ignore from
1665 * the total_flags field.
1666 */
1667 *total_flags &=
1668 FIF_ALLMULTI |
1669 FIF_FCSFAIL |
1670 FIF_PLCPFAIL |
1671 FIF_CONTROL |
1672 FIF_OTHER_BSS |
1673 FIF_PROMISC_IN_BSS;
1674
1675 /*
1676 * Apply some rules to the filters:
1677 * - Some filters imply different filters to be set.
1678 * - Some things we can't filter out at all.
1679 */
1680 if (mc_count)
1681 *total_flags |= FIF_ALLMULTI;
1682 if (*total_flags & FIF_OTHER_BSS ||
1683 *total_flags & FIF_PROMISC_IN_BSS)
1684 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1685
1686 /*
1687 * Check if there is any work left for us.
1688 */
1689 if (rt2x00dev->packet_filter == *total_flags)
1690 return;
1691 rt2x00dev->packet_filter = *total_flags;
1692
1693 /*
1694 * When in atomic context, reschedule and let rt2x00lib
1695 * call this function again.
1696 */
1697 if (in_atomic()) {
1698 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1699 return;
1700 }
1701
1702 /*
1703 * Start configuration steps.
1704 * Note that the version error will always be dropped
1705 * and broadcast frames will always be accepted since
1706 * there is no filter for it at this time.
1707 */
1708 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1709 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1710 !(*total_flags & FIF_FCSFAIL));
1711 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1712 !(*total_flags & FIF_PLCPFAIL));
1713 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1714 !(*total_flags & FIF_CONTROL));
1715 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1716 !(*total_flags & FIF_PROMISC_IN_BSS));
1717 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1718 !(*total_flags & FIF_PROMISC_IN_BSS));
1719 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1720 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1721 !(*total_flags & FIF_ALLMULTI));
1722 rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1723 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1724 }
1725
1726 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1727 struct sk_buff *skb,
1728 struct ieee80211_tx_control *control)
1729 {
1730 struct rt2x00_dev *rt2x00dev = hw->priv;
1731 struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
1732 struct rt2x00_intf *intf = vif_to_intf(control->vif);
1733 struct queue_entry_priv_usb_bcn *priv_bcn;
1734 struct skb_frame_desc *skbdesc;
1735 int pipe = usb_sndbulkpipe(usb_dev, 1);
1736 int length;
1737
1738 if (unlikely(!intf->beacon))
1739 return -ENOBUFS;
1740
1741 priv_bcn = intf->beacon->priv_data;
1742
1743 /*
1744 * Add the descriptor in front of the skb.
1745 */
1746 skb_push(skb, intf->beacon->queue->desc_size);
1747 memset(skb->data, 0, intf->beacon->queue->desc_size);
1748
1749 /*
1750 * Fill in skb descriptor
1751 */
1752 skbdesc = get_skb_frame_desc(skb);
1753 memset(skbdesc, 0, sizeof(*skbdesc));
1754 skbdesc->data = skb->data + intf->beacon->queue->desc_size;
1755 skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
1756 skbdesc->desc = skb->data;
1757 skbdesc->desc_len = intf->beacon->queue->desc_size;
1758 skbdesc->entry = intf->beacon;
1759
1760 /*
1761 * Just in case mac80211 doesn't set this correctly,
1762 * but we need this queue set for the descriptor
1763 * initialization.
1764 */
1765 control->queue = IEEE80211_TX_QUEUE_BEACON;
1766 rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
1767
1768 /*
1769 * USB devices cannot blindly pass the skb->len as the
1770 * length of the data to usb_fill_bulk_urb. Pass the skb
1771 * to the driver to determine what the length should be.
1772 */
1773 length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1774
1775 usb_fill_bulk_urb(priv_bcn->urb, usb_dev, pipe,
1776 skb->data, length, rt2500usb_beacondone,
1777 intf->beacon);
1778
1779 /*
1780 * Second we need to create the guardian byte.
1781 * We only need a single byte, so lets recycle
1782 * the 'flags' field we are not using for beacons.
1783 */
1784 priv_bcn->guardian_data = 0;
1785 usb_fill_bulk_urb(priv_bcn->guardian_urb, usb_dev, pipe,
1786 &priv_bcn->guardian_data, 1, rt2500usb_beacondone,
1787 intf->beacon);
1788
1789 /*
1790 * Send out the guardian byte.
1791 */
1792 usb_submit_urb(priv_bcn->guardian_urb, GFP_ATOMIC);
1793
1794 /*
1795 * Enable beacon generation.
1796 */
1797 rt2500usb_kick_tx_queue(rt2x00dev, control->queue);
1798
1799 return 0;
1800 }
1801
1802 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1803 .tx = rt2x00mac_tx,
1804 .start = rt2x00mac_start,
1805 .stop = rt2x00mac_stop,
1806 .add_interface = rt2x00mac_add_interface,
1807 .remove_interface = rt2x00mac_remove_interface,
1808 .config = rt2x00mac_config,
1809 .config_interface = rt2x00mac_config_interface,
1810 .configure_filter = rt2500usb_configure_filter,
1811 .get_stats = rt2x00mac_get_stats,
1812 .bss_info_changed = rt2x00mac_bss_info_changed,
1813 .conf_tx = rt2x00mac_conf_tx,
1814 .get_tx_stats = rt2x00mac_get_tx_stats,
1815 .beacon_update = rt2500usb_beacon_update,
1816 };
1817
1818 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1819 .probe_hw = rt2500usb_probe_hw,
1820 .initialize = rt2x00usb_initialize,
1821 .uninitialize = rt2x00usb_uninitialize,
1822 .init_rxentry = rt2x00usb_init_rxentry,
1823 .init_txentry = rt2x00usb_init_txentry,
1824 .set_device_state = rt2500usb_set_device_state,
1825 .link_stats = rt2500usb_link_stats,
1826 .reset_tuner = rt2500usb_reset_tuner,
1827 .link_tuner = rt2500usb_link_tuner,
1828 .write_tx_desc = rt2500usb_write_tx_desc,
1829 .write_tx_data = rt2x00usb_write_tx_data,
1830 .get_tx_data_len = rt2500usb_get_tx_data_len,
1831 .kick_tx_queue = rt2500usb_kick_tx_queue,
1832 .fill_rxdone = rt2500usb_fill_rxdone,
1833 .config_intf = rt2500usb_config_intf,
1834 .config_preamble = rt2500usb_config_preamble,
1835 .config = rt2500usb_config,
1836 };
1837
1838 static const struct data_queue_desc rt2500usb_queue_rx = {
1839 .entry_num = RX_ENTRIES,
1840 .data_size = DATA_FRAME_SIZE,
1841 .desc_size = RXD_DESC_SIZE,
1842 .priv_size = sizeof(struct queue_entry_priv_usb_rx),
1843 };
1844
1845 static const struct data_queue_desc rt2500usb_queue_tx = {
1846 .entry_num = TX_ENTRIES,
1847 .data_size = DATA_FRAME_SIZE,
1848 .desc_size = TXD_DESC_SIZE,
1849 .priv_size = sizeof(struct queue_entry_priv_usb_tx),
1850 };
1851
1852 static const struct data_queue_desc rt2500usb_queue_bcn = {
1853 .entry_num = BEACON_ENTRIES,
1854 .data_size = MGMT_FRAME_SIZE,
1855 .desc_size = TXD_DESC_SIZE,
1856 .priv_size = sizeof(struct queue_entry_priv_usb_bcn),
1857 };
1858
1859 static const struct data_queue_desc rt2500usb_queue_atim = {
1860 .entry_num = ATIM_ENTRIES,
1861 .data_size = DATA_FRAME_SIZE,
1862 .desc_size = TXD_DESC_SIZE,
1863 .priv_size = sizeof(struct queue_entry_priv_usb_tx),
1864 };
1865
1866 static const struct rt2x00_ops rt2500usb_ops = {
1867 .name = KBUILD_MODNAME,
1868 .max_sta_intf = 1,
1869 .max_ap_intf = 1,
1870 .eeprom_size = EEPROM_SIZE,
1871 .rf_size = RF_SIZE,
1872 .rx = &rt2500usb_queue_rx,
1873 .tx = &rt2500usb_queue_tx,
1874 .bcn = &rt2500usb_queue_bcn,
1875 .atim = &rt2500usb_queue_atim,
1876 .lib = &rt2500usb_rt2x00_ops,
1877 .hw = &rt2500usb_mac80211_ops,
1878 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1879 .debugfs = &rt2500usb_rt2x00debug,
1880 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1881 };
1882
1883 /*
1884 * rt2500usb module information.
1885 */
1886 static struct usb_device_id rt2500usb_device_table[] = {
1887 /* ASUS */
1888 { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1889 { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1890 /* Belkin */
1891 { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1892 { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1893 { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1894 /* Cisco Systems */
1895 { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1896 { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1897 { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1898 /* Conceptronic */
1899 { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1900 /* D-LINK */
1901 { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1902 /* Gigabyte */
1903 { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1904 { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1905 /* Hercules */
1906 { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1907 /* Melco */
1908 { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
1909 { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1910 { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1911 { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1912 { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1913 /* MSI */
1914 { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1915 { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1916 { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1917 /* Ralink */
1918 { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1919 { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1920 { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1921 { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1922 /* Siemens */
1923 { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1924 /* SMC */
1925 { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1926 /* Spairon */
1927 { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1928 /* Trust */
1929 { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1930 /* Zinwell */
1931 { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1932 { 0, }
1933 };
1934
1935 MODULE_AUTHOR(DRV_PROJECT);
1936 MODULE_VERSION(DRV_VERSION);
1937 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1938 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1939 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1940 MODULE_LICENSE("GPL");
1941
1942 static struct usb_driver rt2500usb_driver = {
1943 .name = KBUILD_MODNAME,
1944 .id_table = rt2500usb_device_table,
1945 .probe = rt2x00usb_probe,
1946 .disconnect = rt2x00usb_disconnect,
1947 .suspend = rt2x00usb_suspend,
1948 .resume = rt2x00usb_resume,
1949 };
1950
1951 static int __init rt2500usb_init(void)
1952 {
1953 return usb_register(&rt2500usb_driver);
1954 }
1955
1956 static void __exit rt2500usb_exit(void)
1957 {
1958 usb_deregister(&rt2500usb_driver);
1959 }
1960
1961 module_init(rt2500usb_init);
1962 module_exit(rt2500usb_exit);
AMDTP streaming driver for the Linux FireWire stack (Juju)