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rt2x00: Cleanup TX/RX entry handling
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / rt2x00 / rt73usb.c
blobf2c8d9733c1d063e06a39a0986252af3a55e9b0e
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: rt73usb
23 Abstract: rt73usb device specific routines.
24 Supported chipsets: rt2571W & rt2671.
25 */
26
27 #include <linux/crc-itu-t.h>
28 #include <linux/delay.h>
29 #include <linux/etherdevice.h>
30 #include <linux/init.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/usb.h>
34
35 #include "rt2x00.h"
36 #include "rt2x00usb.h"
37 #include "rt73usb.h"
38
39 /*
40 * Allow hardware encryption to be disabled.
41 */
42 static int modparam_nohwcrypt = 0;
43 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
44 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
45
46 /*
47 * Register access.
48 * All access to the CSR registers will go through the methods
49 * rt73usb_register_read and rt73usb_register_write.
50 * BBP and RF register require indirect register access,
51 * and use the CSR registers BBPCSR and RFCSR to achieve this.
52 * These indirect registers work with busy bits,
53 * and we will try maximal REGISTER_BUSY_COUNT times to access
54 * the register while taking a REGISTER_BUSY_DELAY us delay
55 * between each attampt. When the busy bit is still set at that time,
56 * the access attempt is considered to have failed,
57 * and we will print an error.
58 * The _lock versions must be used if you already hold the usb_cache_mutex
59 */
60 static inline void rt73usb_register_read(struct rt2x00_dev *rt2x00dev,
61 const unsigned int offset, u32 *value)
62 {
63 __le32 reg;
64 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
65 USB_VENDOR_REQUEST_IN, offset,
66 &reg, sizeof(u32), REGISTER_TIMEOUT);
67 *value = le32_to_cpu(reg);
68 }
69
70 static inline void rt73usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
71 const unsigned int offset, u32 *value)
72 {
73 __le32 reg;
74 rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
75 USB_VENDOR_REQUEST_IN, offset,
76 &reg, sizeof(u32), REGISTER_TIMEOUT);
77 *value = le32_to_cpu(reg);
78 }
79
80 static inline void rt73usb_register_multiread(struct rt2x00_dev *rt2x00dev,
81 const unsigned int offset,
82 void *value, const u32 length)
83 {
84 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
85 USB_VENDOR_REQUEST_IN, offset,
86 value, length,
87 REGISTER_TIMEOUT32(length));
88 }
89
90 static inline void rt73usb_register_write(struct rt2x00_dev *rt2x00dev,
91 const unsigned int offset, u32 value)
92 {
93 __le32 reg = cpu_to_le32(value);
94 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
95 USB_VENDOR_REQUEST_OUT, offset,
96 &reg, sizeof(u32), REGISTER_TIMEOUT);
97 }
98
99 static inline void rt73usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
100 const unsigned int offset, u32 value)
101 {
102 __le32 reg = cpu_to_le32(value);
103 rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
104 USB_VENDOR_REQUEST_OUT, offset,
105 &reg, sizeof(u32), REGISTER_TIMEOUT);
106 }
107
108 static inline void rt73usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
109 const unsigned int offset,
110 void *value, const u32 length)
111 {
112 rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
113 USB_VENDOR_REQUEST_OUT, offset,
114 value, length,
115 REGISTER_TIMEOUT32(length));
116 }
117
118 static u32 rt73usb_bbp_check(struct rt2x00_dev *rt2x00dev)
119 {
120 u32 reg;
121 unsigned int i;
122
123 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
124 rt73usb_register_read_lock(rt2x00dev, PHY_CSR3, &reg);
125 if (!rt2x00_get_field32(reg, PHY_CSR3_BUSY))
126 break;
127 udelay(REGISTER_BUSY_DELAY);
128 }
129
130 return reg;
131 }
132
133 static void rt73usb_bbp_write(struct rt2x00_dev *rt2x00dev,
134 const unsigned int word, const u8 value)
135 {
136 u32 reg;
137
138 mutex_lock(&rt2x00dev->usb_cache_mutex);
139
140 /*
141 * Wait until the BBP becomes ready.
142 */
143 reg = rt73usb_bbp_check(rt2x00dev);
144 if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
145 goto exit_fail;
146
147 /*
148 * Write the data into the BBP.
149 */
150 reg = 0;
151 rt2x00_set_field32(&reg, PHY_CSR3_VALUE, value);
152 rt2x00_set_field32(&reg, PHY_CSR3_REGNUM, word);
153 rt2x00_set_field32(&reg, PHY_CSR3_BUSY, 1);
154 rt2x00_set_field32(&reg, PHY_CSR3_READ_CONTROL, 0);
155
156 rt73usb_register_write_lock(rt2x00dev, PHY_CSR3, reg);
157 mutex_unlock(&rt2x00dev->usb_cache_mutex);
158
159 return;
160
161 exit_fail:
162 mutex_unlock(&rt2x00dev->usb_cache_mutex);
163
164 ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n");
165 }
166
167 static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
168 const unsigned int word, u8 *value)
169 {
170 u32 reg;
171
172 mutex_lock(&rt2x00dev->usb_cache_mutex);
173
174 /*
175 * Wait until the BBP becomes ready.
176 */
177 reg = rt73usb_bbp_check(rt2x00dev);
178 if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
179 goto exit_fail;
180
181 /*
182 * Write the request into the BBP.
183 */
184 reg = 0;
185 rt2x00_set_field32(&reg, PHY_CSR3_REGNUM, word);
186 rt2x00_set_field32(&reg, PHY_CSR3_BUSY, 1);
187 rt2x00_set_field32(&reg, PHY_CSR3_READ_CONTROL, 1);
188
189 rt73usb_register_write_lock(rt2x00dev, PHY_CSR3, reg);
190
191 /*
192 * Wait until the BBP becomes ready.
193 */
194 reg = rt73usb_bbp_check(rt2x00dev);
195 if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
196 goto exit_fail;
197
198 *value = rt2x00_get_field32(reg, PHY_CSR3_VALUE);
199 mutex_unlock(&rt2x00dev->usb_cache_mutex);
200
201 return;
202
203 exit_fail:
204 mutex_unlock(&rt2x00dev->usb_cache_mutex);
205
206 ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
207 *value = 0xff;
208 }
209
210 static void rt73usb_rf_write(struct rt2x00_dev *rt2x00dev,
211 const unsigned int word, const u32 value)
212 {
213 u32 reg;
214 unsigned int i;
215
216 if (!word)
217 return;
218
219 mutex_lock(&rt2x00dev->usb_cache_mutex);
220
221 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
222 rt73usb_register_read_lock(rt2x00dev, PHY_CSR4, &reg);
223 if (!rt2x00_get_field32(reg, PHY_CSR4_BUSY))
224 goto rf_write;
225 udelay(REGISTER_BUSY_DELAY);
226 }
227
228 mutex_unlock(&rt2x00dev->usb_cache_mutex);
229 ERROR(rt2x00dev, "PHY_CSR4 register busy. Write failed.\n");
230 return;
231
232 rf_write:
233 reg = 0;
234 rt2x00_set_field32(&reg, PHY_CSR4_VALUE, value);
235
236 /*
237 * RF5225 and RF2527 contain 21 bits per RF register value,
238 * all others contain 20 bits.
239 */
240 rt2x00_set_field32(&reg, PHY_CSR4_NUMBER_OF_BITS,
241 20 + (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
242 rt2x00_rf(&rt2x00dev->chip, RF2527)));
243 rt2x00_set_field32(&reg, PHY_CSR4_IF_SELECT, 0);
244 rt2x00_set_field32(&reg, PHY_CSR4_BUSY, 1);
245
246 rt73usb_register_write_lock(rt2x00dev, PHY_CSR4, reg);
247 rt2x00_rf_write(rt2x00dev, word, value);
248 mutex_unlock(&rt2x00dev->usb_cache_mutex);
249 }
250
251 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
252 static const struct rt2x00debug rt73usb_rt2x00debug = {
253 .owner = THIS_MODULE,
254 .csr = {
255 .read = rt73usb_register_read,
256 .write = rt73usb_register_write,
257 .flags = RT2X00DEBUGFS_OFFSET,
258 .word_base = CSR_REG_BASE,
259 .word_size = sizeof(u32),
260 .word_count = CSR_REG_SIZE / sizeof(u32),
261 },
262 .eeprom = {
263 .read = rt2x00_eeprom_read,
264 .write = rt2x00_eeprom_write,
265 .word_base = EEPROM_BASE,
266 .word_size = sizeof(u16),
267 .word_count = EEPROM_SIZE / sizeof(u16),
268 },
269 .bbp = {
270 .read = rt73usb_bbp_read,
271 .write = rt73usb_bbp_write,
272 .word_base = BBP_BASE,
273 .word_size = sizeof(u8),
274 .word_count = BBP_SIZE / sizeof(u8),
275 },
276 .rf = {
277 .read = rt2x00_rf_read,
278 .write = rt73usb_rf_write,
279 .word_base = RF_BASE,
280 .word_size = sizeof(u32),
281 .word_count = RF_SIZE / sizeof(u32),
282 },
283 };
284 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
285
286 #ifdef CONFIG_RT2X00_LIB_LEDS
287 static void rt73usb_brightness_set(struct led_classdev *led_cdev,
288 enum led_brightness brightness)
289 {
290 struct rt2x00_led *led =
291 container_of(led_cdev, struct rt2x00_led, led_dev);
292 unsigned int enabled = brightness != LED_OFF;
293 unsigned int a_mode =
294 (enabled && led->rt2x00dev->curr_band == IEEE80211_BAND_5GHZ);
295 unsigned int bg_mode =
296 (enabled && led->rt2x00dev->curr_band == IEEE80211_BAND_2GHZ);
297
298 if (led->type == LED_TYPE_RADIO) {
299 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
300 MCU_LEDCS_RADIO_STATUS, enabled);
301
302 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
303 0, led->rt2x00dev->led_mcu_reg,
304 REGISTER_TIMEOUT);
305 } else if (led->type == LED_TYPE_ASSOC) {
306 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
307 MCU_LEDCS_LINK_BG_STATUS, bg_mode);
308 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
309 MCU_LEDCS_LINK_A_STATUS, a_mode);
310
311 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
312 0, led->rt2x00dev->led_mcu_reg,
313 REGISTER_TIMEOUT);
314 } else if (led->type == LED_TYPE_QUALITY) {
315 /*
316 * The brightness is divided into 6 levels (0 - 5),
317 * this means we need to convert the brightness
318 * argument into the matching level within that range.
319 */
320 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
321 brightness / (LED_FULL / 6),
322 led->rt2x00dev->led_mcu_reg,
323 REGISTER_TIMEOUT);
324 }
325 }
326
327 static int rt73usb_blink_set(struct led_classdev *led_cdev,
328 unsigned long *delay_on,
329 unsigned long *delay_off)
330 {
331 struct rt2x00_led *led =
332 container_of(led_cdev, struct rt2x00_led, led_dev);
333 u32 reg;
334
335 rt73usb_register_read(led->rt2x00dev, MAC_CSR14, &reg);
336 rt2x00_set_field32(&reg, MAC_CSR14_ON_PERIOD, *delay_on);
337 rt2x00_set_field32(&reg, MAC_CSR14_OFF_PERIOD, *delay_off);
338 rt73usb_register_write(led->rt2x00dev, MAC_CSR14, reg);
339
340 return 0;
341 }
342
343 static void rt73usb_init_led(struct rt2x00_dev *rt2x00dev,
344 struct rt2x00_led *led,
345 enum led_type type)
346 {
347 led->rt2x00dev = rt2x00dev;
348 led->type = type;
349 led->led_dev.brightness_set = rt73usb_brightness_set;
350 led->led_dev.blink_set = rt73usb_blink_set;
351 led->flags = LED_INITIALIZED;
352 }
353 #endif /* CONFIG_RT2X00_LIB_LEDS */
354
355 /*
356 * Configuration handlers.
357 */
358 static int rt73usb_config_shared_key(struct rt2x00_dev *rt2x00dev,
359 struct rt2x00lib_crypto *crypto,
360 struct ieee80211_key_conf *key)
361 {
362 struct hw_key_entry key_entry;
363 struct rt2x00_field32 field;
364 int timeout;
365 u32 mask;
366 u32 reg;
367
368 if (crypto->cmd == SET_KEY) {
369 /*
370 * rt2x00lib can't determine the correct free
371 * key_idx for shared keys. We have 1 register
372 * with key valid bits. The goal is simple, read
373 * the register, if that is full we have no slots
374 * left.
375 * Note that each BSS is allowed to have up to 4
376 * shared keys, so put a mask over the allowed
377 * entries.
378 */
379 mask = (0xf << crypto->bssidx);
380
381 rt73usb_register_read(rt2x00dev, SEC_CSR0, &reg);
382 reg &= mask;
383
384 if (reg && reg == mask)
385 return -ENOSPC;
386
387 key->hw_key_idx += reg ? ffz(reg) : 0;
388
389 /*
390 * Upload key to hardware
391 */
392 memcpy(key_entry.key, crypto->key,
393 sizeof(key_entry.key));
394 memcpy(key_entry.tx_mic, crypto->tx_mic,
395 sizeof(key_entry.tx_mic));
396 memcpy(key_entry.rx_mic, crypto->rx_mic,
397 sizeof(key_entry.rx_mic));
398
399 reg = SHARED_KEY_ENTRY(key->hw_key_idx);
400 timeout = REGISTER_TIMEOUT32(sizeof(key_entry));
401 rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
402 USB_VENDOR_REQUEST_OUT, reg,
403 &key_entry,
404 sizeof(key_entry),
405 timeout);
406
407 /*
408 * The cipher types are stored over 2 registers.
409 * bssidx 0 and 1 keys are stored in SEC_CSR1 and
410 * bssidx 1 and 2 keys are stored in SEC_CSR5.
411 * Using the correct defines correctly will cause overhead,
412 * so just calculate the correct offset.
413 */
414 if (key->hw_key_idx < 8) {
415 field.bit_offset = (3 * key->hw_key_idx);
416 field.bit_mask = 0x7 << field.bit_offset;
417
418 rt73usb_register_read(rt2x00dev, SEC_CSR1, &reg);
419 rt2x00_set_field32(&reg, field, crypto->cipher);
420 rt73usb_register_write(rt2x00dev, SEC_CSR1, reg);
421 } else {
422 field.bit_offset = (3 * (key->hw_key_idx - 8));
423 field.bit_mask = 0x7 << field.bit_offset;
424
425 rt73usb_register_read(rt2x00dev, SEC_CSR5, &reg);
426 rt2x00_set_field32(&reg, field, crypto->cipher);
427 rt73usb_register_write(rt2x00dev, SEC_CSR5, reg);
428 }
429
430 /*
431 * The driver does not support the IV/EIV generation
432 * in hardware. However it doesn't support the IV/EIV
433 * inside the ieee80211 frame either, but requires it
434 * to be provided seperately for the descriptor.
435 * rt2x00lib will cut the IV/EIV data out of all frames
436 * given to us by mac80211, but we must tell mac80211
437 * to generate the IV/EIV data.
438 */
439 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
440 }
441
442 /*
443 * SEC_CSR0 contains only single-bit fields to indicate
444 * a particular key is valid. Because using the FIELD32()
445 * defines directly will cause a lot of overhead we use
446 * a calculation to determine the correct bit directly.
447 */
448 mask = 1 << key->hw_key_idx;
449
450 rt73usb_register_read(rt2x00dev, SEC_CSR0, &reg);
451 if (crypto->cmd == SET_KEY)
452 reg |= mask;
453 else if (crypto->cmd == DISABLE_KEY)
454 reg &= ~mask;
455 rt73usb_register_write(rt2x00dev, SEC_CSR0, reg);
456
457 return 0;
458 }
459
460 static int rt73usb_config_pairwise_key(struct rt2x00_dev *rt2x00dev,
461 struct rt2x00lib_crypto *crypto,
462 struct ieee80211_key_conf *key)
463 {
464 struct hw_pairwise_ta_entry addr_entry;
465 struct hw_key_entry key_entry;
466 int timeout;
467 u32 mask;
468 u32 reg;
469
470 if (crypto->cmd == SET_KEY) {
471 /*
472 * rt2x00lib can't determine the correct free
473 * key_idx for pairwise keys. We have 2 registers
474 * with key valid bits. The goal is simple, read
475 * the first register, if that is full move to
476 * the next register.
477 * When both registers are full, we drop the key,
478 * otherwise we use the first invalid entry.
479 */
480 rt73usb_register_read(rt2x00dev, SEC_CSR2, &reg);
481 if (reg && reg == ~0) {
482 key->hw_key_idx = 32;
483 rt73usb_register_read(rt2x00dev, SEC_CSR3, &reg);
484 if (reg && reg == ~0)
485 return -ENOSPC;
486 }
487
488 key->hw_key_idx += reg ? ffz(reg) : 0;
489
490 /*
491 * Upload key to hardware
492 */
493 memcpy(key_entry.key, crypto->key,
494 sizeof(key_entry.key));
495 memcpy(key_entry.tx_mic, crypto->tx_mic,
496 sizeof(key_entry.tx_mic));
497 memcpy(key_entry.rx_mic, crypto->rx_mic,
498 sizeof(key_entry.rx_mic));
499
500 reg = PAIRWISE_KEY_ENTRY(key->hw_key_idx);
501 timeout = REGISTER_TIMEOUT32(sizeof(key_entry));
502 rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
503 USB_VENDOR_REQUEST_OUT, reg,
504 &key_entry,
505 sizeof(key_entry),
506 timeout);
507
508 /*
509 * Send the address and cipher type to the hardware register.
510 * This data fits within the CSR cache size, so we can use
511 * rt73usb_register_multiwrite() directly.
512 */
513 memset(&addr_entry, 0, sizeof(addr_entry));
514 memcpy(&addr_entry, crypto->address, ETH_ALEN);
515 addr_entry.cipher = crypto->cipher;
516
517 reg = PAIRWISE_TA_ENTRY(key->hw_key_idx);
518 rt73usb_register_multiwrite(rt2x00dev, reg,
519 &addr_entry, sizeof(addr_entry));
520
521 /*
522 * Enable pairwise lookup table for given BSS idx,
523 * without this received frames will not be decrypted
524 * by the hardware.
525 */
526 rt73usb_register_read(rt2x00dev, SEC_CSR4, &reg);
527 reg |= (1 << crypto->bssidx);
528 rt73usb_register_write(rt2x00dev, SEC_CSR4, reg);
529
530 /*
531 * The driver does not support the IV/EIV generation
532 * in hardware. However it doesn't support the IV/EIV
533 * inside the ieee80211 frame either, but requires it
534 * to be provided seperately for the descriptor.
535 * rt2x00lib will cut the IV/EIV data out of all frames
536 * given to us by mac80211, but we must tell mac80211
537 * to generate the IV/EIV data.
538 */
539 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
540 }
541
542 /*
543 * SEC_CSR2 and SEC_CSR3 contain only single-bit fields to indicate
544 * a particular key is valid. Because using the FIELD32()
545 * defines directly will cause a lot of overhead we use
546 * a calculation to determine the correct bit directly.
547 */
548 if (key->hw_key_idx < 32) {
549 mask = 1 << key->hw_key_idx;
550
551 rt73usb_register_read(rt2x00dev, SEC_CSR2, &reg);
552 if (crypto->cmd == SET_KEY)
553 reg |= mask;
554 else if (crypto->cmd == DISABLE_KEY)
555 reg &= ~mask;
556 rt73usb_register_write(rt2x00dev, SEC_CSR2, reg);
557 } else {
558 mask = 1 << (key->hw_key_idx - 32);
559
560 rt73usb_register_read(rt2x00dev, SEC_CSR3, &reg);
561 if (crypto->cmd == SET_KEY)
562 reg |= mask;
563 else if (crypto->cmd == DISABLE_KEY)
564 reg &= ~mask;
565 rt73usb_register_write(rt2x00dev, SEC_CSR3, reg);
566 }
567
568 return 0;
569 }
570
571 static void rt73usb_config_filter(struct rt2x00_dev *rt2x00dev,
572 const unsigned int filter_flags)
573 {
574 u32 reg;
575
576 /*
577 * Start configuration steps.
578 * Note that the version error will always be dropped
579 * and broadcast frames will always be accepted since
580 * there is no filter for it at this time.
581 */
582 rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
583 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CRC,
584 !(filter_flags & FIF_FCSFAIL));
585 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_PHYSICAL,
586 !(filter_flags & FIF_PLCPFAIL));
587 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CONTROL,
588 !(filter_flags & FIF_CONTROL));
589 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_NOT_TO_ME,
590 !(filter_flags & FIF_PROMISC_IN_BSS));
591 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_TO_DS,
592 !(filter_flags & FIF_PROMISC_IN_BSS) &&
593 !rt2x00dev->intf_ap_count);
594 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_VERSION_ERROR, 1);
595 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_MULTICAST,
596 !(filter_flags & FIF_ALLMULTI));
597 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_BROADCAST, 0);
598 rt2x00_set_field32(&reg, TXRX_CSR0_DROP_ACK_CTS,
599 !(filter_flags & FIF_CONTROL));
600 rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
601 }
602
603 static void rt73usb_config_intf(struct rt2x00_dev *rt2x00dev,
604 struct rt2x00_intf *intf,
605 struct rt2x00intf_conf *conf,
606 const unsigned int flags)
607 {
608 unsigned int beacon_base;
609 u32 reg;
610
611 if (flags & CONFIG_UPDATE_TYPE) {
612 /*
613 * Clear current synchronisation setup.
614 * For the Beacon base registers we only need to clear
615 * the first byte since that byte contains the VALID and OWNER
616 * bits which (when set to 0) will invalidate the entire beacon.
617 */
618 beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
619 rt73usb_register_write(rt2x00dev, beacon_base, 0);
620
621 /*
622 * Enable synchronisation.
623 */
624 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
625 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 1);
626 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_SYNC, conf->sync);
627 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 1);
628 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
629 }
630
631 if (flags & CONFIG_UPDATE_MAC) {
632 reg = le32_to_cpu(conf->mac[1]);
633 rt2x00_set_field32(&reg, MAC_CSR3_UNICAST_TO_ME_MASK, 0xff);
634 conf->mac[1] = cpu_to_le32(reg);
635
636 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR2,
637 conf->mac, sizeof(conf->mac));
638 }
639
640 if (flags & CONFIG_UPDATE_BSSID) {
641 reg = le32_to_cpu(conf->bssid[1]);
642 rt2x00_set_field32(&reg, MAC_CSR5_BSS_ID_MASK, 3);
643 conf->bssid[1] = cpu_to_le32(reg);
644
645 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR4,
646 conf->bssid, sizeof(conf->bssid));
647 }
648 }
649
650 static void rt73usb_config_erp(struct rt2x00_dev *rt2x00dev,
651 struct rt2x00lib_erp *erp)
652 {
653 u32 reg;
654
655 rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
656 rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, erp->ack_timeout);
657 rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
658
659 rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
660 rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_PREAMBLE,
661 !!erp->short_preamble);
662 rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
663
664 rt73usb_register_write(rt2x00dev, TXRX_CSR5, erp->basic_rates);
665
666 rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
667 rt2x00_set_field32(&reg, MAC_CSR9_SLOT_TIME, erp->slot_time);
668 rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
669
670 rt73usb_register_read(rt2x00dev, MAC_CSR8, &reg);
671 rt2x00_set_field32(&reg, MAC_CSR8_SIFS, erp->sifs);
672 rt2x00_set_field32(&reg, MAC_CSR8_SIFS_AFTER_RX_OFDM, 3);
673 rt2x00_set_field32(&reg, MAC_CSR8_EIFS, erp->eifs);
674 rt73usb_register_write(rt2x00dev, MAC_CSR8, reg);
675 }
676
677 static void rt73usb_config_antenna_5x(struct rt2x00_dev *rt2x00dev,
678 struct antenna_setup *ant)
679 {
680 u8 r3;
681 u8 r4;
682 u8 r77;
683 u8 temp;
684
685 rt73usb_bbp_read(rt2x00dev, 3, &r3);
686 rt73usb_bbp_read(rt2x00dev, 4, &r4);
687 rt73usb_bbp_read(rt2x00dev, 77, &r77);
688
689 rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
690
691 /*
692 * Configure the RX antenna.
693 */
694 switch (ant->rx) {
695 case ANTENNA_HW_DIVERSITY:
696 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
697 temp = !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags)
698 && (rt2x00dev->curr_band != IEEE80211_BAND_5GHZ);
699 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, temp);
700 break;
701 case ANTENNA_A:
702 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
703 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
704 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
705 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
706 else
707 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
708 break;
709 case ANTENNA_B:
710 default:
711 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
712 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
713 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
714 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
715 else
716 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
717 break;
718 }
719
720 rt73usb_bbp_write(rt2x00dev, 77, r77);
721 rt73usb_bbp_write(rt2x00dev, 3, r3);
722 rt73usb_bbp_write(rt2x00dev, 4, r4);
723 }
724
725 static void rt73usb_config_antenna_2x(struct rt2x00_dev *rt2x00dev,
726 struct antenna_setup *ant)
727 {
728 u8 r3;
729 u8 r4;
730 u8 r77;
731
732 rt73usb_bbp_read(rt2x00dev, 3, &r3);
733 rt73usb_bbp_read(rt2x00dev, 4, &r4);
734 rt73usb_bbp_read(rt2x00dev, 77, &r77);
735
736 rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
737 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
738 !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags));
739
740 /*
741 * Configure the RX antenna.
742 */
743 switch (ant->rx) {
744 case ANTENNA_HW_DIVERSITY:
745 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
746 break;
747 case ANTENNA_A:
748 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
749 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
750 break;
751 case ANTENNA_B:
752 default:
753 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
754 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
755 break;
756 }
757
758 rt73usb_bbp_write(rt2x00dev, 77, r77);
759 rt73usb_bbp_write(rt2x00dev, 3, r3);
760 rt73usb_bbp_write(rt2x00dev, 4, r4);
761 }
762
763 struct antenna_sel {
764 u8 word;
765 /*
766 * value[0] -> non-LNA
767 * value[1] -> LNA
768 */
769 u8 value[2];
770 };
771
772 static const struct antenna_sel antenna_sel_a[] = {
773 { 96, { 0x58, 0x78 } },
774 { 104, { 0x38, 0x48 } },
775 { 75, { 0xfe, 0x80 } },
776 { 86, { 0xfe, 0x80 } },
777 { 88, { 0xfe, 0x80 } },
778 { 35, { 0x60, 0x60 } },
779 { 97, { 0x58, 0x58 } },
780 { 98, { 0x58, 0x58 } },
781 };
782
783 static const struct antenna_sel antenna_sel_bg[] = {
784 { 96, { 0x48, 0x68 } },
785 { 104, { 0x2c, 0x3c } },
786 { 75, { 0xfe, 0x80 } },
787 { 86, { 0xfe, 0x80 } },
788 { 88, { 0xfe, 0x80 } },
789 { 35, { 0x50, 0x50 } },
790 { 97, { 0x48, 0x48 } },
791 { 98, { 0x48, 0x48 } },
792 };
793
794 static void rt73usb_config_ant(struct rt2x00_dev *rt2x00dev,
795 struct antenna_setup *ant)
796 {
797 const struct antenna_sel *sel;
798 unsigned int lna;
799 unsigned int i;
800 u32 reg;
801
802 /*
803 * We should never come here because rt2x00lib is supposed
804 * to catch this and send us the correct antenna explicitely.
805 */
806 BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
807 ant->tx == ANTENNA_SW_DIVERSITY);
808
809 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ) {
810 sel = antenna_sel_a;
811 lna = test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
812 } else {
813 sel = antenna_sel_bg;
814 lna = test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
815 }
816
817 for (i = 0; i < ARRAY_SIZE(antenna_sel_a); i++)
818 rt73usb_bbp_write(rt2x00dev, sel[i].word, sel[i].value[lna]);
819
820 rt73usb_register_read(rt2x00dev, PHY_CSR0, &reg);
821
822 rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_BG,
823 (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ));
824 rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_A,
825 (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ));
826
827 rt73usb_register_write(rt2x00dev, PHY_CSR0, reg);
828
829 if (rt2x00_rf(&rt2x00dev->chip, RF5226) ||
830 rt2x00_rf(&rt2x00dev->chip, RF5225))
831 rt73usb_config_antenna_5x(rt2x00dev, ant);
832 else if (rt2x00_rf(&rt2x00dev->chip, RF2528) ||
833 rt2x00_rf(&rt2x00dev->chip, RF2527))
834 rt73usb_config_antenna_2x(rt2x00dev, ant);
835 }
836
837 static void rt73usb_config_lna_gain(struct rt2x00_dev *rt2x00dev,
838 struct rt2x00lib_conf *libconf)
839 {
840 u16 eeprom;
841 short lna_gain = 0;
842
843 if (libconf->conf->channel->band == IEEE80211_BAND_2GHZ) {
844 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
845 lna_gain += 14;
846
847 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
848 lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
849 } else {
850 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
851 lna_gain -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
852 }
853
854 rt2x00dev->lna_gain = lna_gain;
855 }
856
857 static void rt73usb_config_channel(struct rt2x00_dev *rt2x00dev,
858 struct rf_channel *rf, const int txpower)
859 {
860 u8 r3;
861 u8 r94;
862 u8 smart;
863
864 rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
865 rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset);
866
867 smart = !(rt2x00_rf(&rt2x00dev->chip, RF5225) ||
868 rt2x00_rf(&rt2x00dev->chip, RF2527));
869
870 rt73usb_bbp_read(rt2x00dev, 3, &r3);
871 rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, smart);
872 rt73usb_bbp_write(rt2x00dev, 3, r3);
873
874 r94 = 6;
875 if (txpower > MAX_TXPOWER && txpower <= (MAX_TXPOWER + r94))
876 r94 += txpower - MAX_TXPOWER;
877 else if (txpower < MIN_TXPOWER && txpower >= (MIN_TXPOWER - r94))
878 r94 += txpower;
879 rt73usb_bbp_write(rt2x00dev, 94, r94);
880
881 rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
882 rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
883 rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
884 rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
885
886 rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
887 rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
888 rt73usb_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004);
889 rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
890
891 rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
892 rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
893 rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
894 rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
895
896 udelay(10);
897 }
898
899 static void rt73usb_config_txpower(struct rt2x00_dev *rt2x00dev,
900 const int txpower)
901 {
902 struct rf_channel rf;
903
904 rt2x00_rf_read(rt2x00dev, 1, &rf.rf1);
905 rt2x00_rf_read(rt2x00dev, 2, &rf.rf2);
906 rt2x00_rf_read(rt2x00dev, 3, &rf.rf3);
907 rt2x00_rf_read(rt2x00dev, 4, &rf.rf4);
908
909 rt73usb_config_channel(rt2x00dev, &rf, txpower);
910 }
911
912 static void rt73usb_config_retry_limit(struct rt2x00_dev *rt2x00dev,
913 struct rt2x00lib_conf *libconf)
914 {
915 u32 reg;
916
917 rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
918 rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT,
919 libconf->conf->long_frame_max_tx_count);
920 rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT,
921 libconf->conf->short_frame_max_tx_count);
922 rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
923 }
924
925 static void rt73usb_config_duration(struct rt2x00_dev *rt2x00dev,
926 struct rt2x00lib_conf *libconf)
927 {
928 u32 reg;
929
930 rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
931 rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
932 rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
933
934 rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
935 rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_ENABLE, 1);
936 rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
937
938 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
939 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_INTERVAL,
940 libconf->conf->beacon_int * 16);
941 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
942 }
943
944 static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
945 struct rt2x00lib_conf *libconf,
946 const unsigned int flags)
947 {
948 /* Always recalculate LNA gain before changing configuration */
949 rt73usb_config_lna_gain(rt2x00dev, libconf);
950
951 if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
952 rt73usb_config_channel(rt2x00dev, &libconf->rf,
953 libconf->conf->power_level);
954 if ((flags & IEEE80211_CONF_CHANGE_POWER) &&
955 !(flags & IEEE80211_CONF_CHANGE_CHANNEL))
956 rt73usb_config_txpower(rt2x00dev, libconf->conf->power_level);
957 if (flags & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
958 rt73usb_config_retry_limit(rt2x00dev, libconf);
959 if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL)
960 rt73usb_config_duration(rt2x00dev, libconf);
961 }
962
963 /*
964 * Link tuning
965 */
966 static void rt73usb_link_stats(struct rt2x00_dev *rt2x00dev,
967 struct link_qual *qual)
968 {
969 u32 reg;
970
971 /*
972 * Update FCS error count from register.
973 */
974 rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
975 qual->rx_failed = rt2x00_get_field32(reg, STA_CSR0_FCS_ERROR);
976
977 /*
978 * Update False CCA count from register.
979 */
980 rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
981 qual->false_cca = rt2x00_get_field32(reg, STA_CSR1_FALSE_CCA_ERROR);
982 }
983
984 static void rt73usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
985 {
986 rt73usb_bbp_write(rt2x00dev, 17, 0x20);
987 rt2x00dev->link.vgc_level = 0x20;
988 }
989
990 static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev)
991 {
992 int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
993 u8 r17;
994 u8 up_bound;
995 u8 low_bound;
996
997 rt73usb_bbp_read(rt2x00dev, 17, &r17);
998
999 /*
1000 * Determine r17 bounds.
1001 */
1002 if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
1003 low_bound = 0x28;
1004 up_bound = 0x48;
1005
1006 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
1007 low_bound += 0x10;
1008 up_bound += 0x10;
1009 }
1010 } else {
1011 if (rssi > -82) {
1012 low_bound = 0x1c;
1013 up_bound = 0x40;
1014 } else if (rssi > -84) {
1015 low_bound = 0x1c;
1016 up_bound = 0x20;
1017 } else {
1018 low_bound = 0x1c;
1019 up_bound = 0x1c;
1020 }
1021
1022 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) {
1023 low_bound += 0x14;
1024 up_bound += 0x10;
1025 }
1026 }
1027
1028 /*
1029 * If we are not associated, we should go straight to the
1030 * dynamic CCA tuning.
1031 */
1032 if (!rt2x00dev->intf_associated)
1033 goto dynamic_cca_tune;
1034
1035 /*
1036 * Special big-R17 for very short distance
1037 */
1038 if (rssi > -35) {
1039 if (r17 != 0x60)
1040 rt73usb_bbp_write(rt2x00dev, 17, 0x60);
1041 return;
1042 }
1043
1044 /*
1045 * Special big-R17 for short distance
1046 */
1047 if (rssi >= -58) {
1048 if (r17 != up_bound)
1049 rt73usb_bbp_write(rt2x00dev, 17, up_bound);
1050 return;
1051 }
1052
1053 /*
1054 * Special big-R17 for middle-short distance
1055 */
1056 if (rssi >= -66) {
1057 low_bound += 0x10;
1058 if (r17 != low_bound)
1059 rt73usb_bbp_write(rt2x00dev, 17, low_bound);
1060 return;
1061 }
1062
1063 /*
1064 * Special mid-R17 for middle distance
1065 */
1066 if (rssi >= -74) {
1067 if (r17 != (low_bound + 0x10))
1068 rt73usb_bbp_write(rt2x00dev, 17, low_bound + 0x08);
1069 return;
1070 }
1071
1072 /*
1073 * Special case: Change up_bound based on the rssi.
1074 * Lower up_bound when rssi is weaker then -74 dBm.
1075 */
1076 up_bound -= 2 * (-74 - rssi);
1077 if (low_bound > up_bound)
1078 up_bound = low_bound;
1079
1080 if (r17 > up_bound) {
1081 rt73usb_bbp_write(rt2x00dev, 17, up_bound);
1082 return;
1083 }
1084
1085 dynamic_cca_tune:
1086
1087 /*
1088 * r17 does not yet exceed upper limit, continue and base
1089 * the r17 tuning on the false CCA count.
1090 */
1091 if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
1092 r17 += 4;
1093 if (r17 > up_bound)
1094 r17 = up_bound;
1095 rt73usb_bbp_write(rt2x00dev, 17, r17);
1096 } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
1097 r17 -= 4;
1098 if (r17 < low_bound)
1099 r17 = low_bound;
1100 rt73usb_bbp_write(rt2x00dev, 17, r17);
1101 }
1102 }
1103
1104 /*
1105 * Firmware functions
1106 */
1107 static char *rt73usb_get_firmware_name(struct rt2x00_dev *rt2x00dev)
1108 {
1109 return FIRMWARE_RT2571;
1110 }
1111
1112 static u16 rt73usb_get_firmware_crc(const void *data, const size_t len)
1113 {
1114 u16 crc;
1115
1116 /*
1117 * Use the crc itu-t algorithm.
1118 * The last 2 bytes in the firmware array are the crc checksum itself,
1119 * this means that we should never pass those 2 bytes to the crc
1120 * algorithm.
1121 */
1122 crc = crc_itu_t(0, data, len - 2);
1123 crc = crc_itu_t_byte(crc, 0);
1124 crc = crc_itu_t_byte(crc, 0);
1125
1126 return crc;
1127 }
1128
1129 static int rt73usb_load_firmware(struct rt2x00_dev *rt2x00dev, const void *data,
1130 const size_t len)
1131 {
1132 unsigned int i;
1133 int status;
1134 u32 reg;
1135
1136 /*
1137 * Wait for stable hardware.
1138 */
1139 for (i = 0; i < 100; i++) {
1140 rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1141 if (reg)
1142 break;
1143 msleep(1);
1144 }
1145
1146 if (!reg) {
1147 ERROR(rt2x00dev, "Unstable hardware.\n");
1148 return -EBUSY;
1149 }
1150
1151 /*
1152 * Write firmware to device.
1153 */
1154 rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
1155 USB_VENDOR_REQUEST_OUT,
1156 FIRMWARE_IMAGE_BASE,
1157 data, len,
1158 REGISTER_TIMEOUT32(len));
1159
1160 /*
1161 * Send firmware request to device to load firmware,
1162 * we need to specify a long timeout time.
1163 */
1164 status = rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE,
1165 0, USB_MODE_FIRMWARE,
1166 REGISTER_TIMEOUT_FIRMWARE);
1167 if (status < 0) {
1168 ERROR(rt2x00dev, "Failed to write Firmware to device.\n");
1169 return status;
1170 }
1171
1172 return 0;
1173 }
1174
1175 /*
1176 * Initialization functions.
1177 */
1178 static int rt73usb_init_registers(struct rt2x00_dev *rt2x00dev)
1179 {
1180 u32 reg;
1181
1182 rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1183 rt2x00_set_field32(&reg, TXRX_CSR0_AUTO_TX_SEQ, 1);
1184 rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX, 0);
1185 rt2x00_set_field32(&reg, TXRX_CSR0_TX_WITHOUT_WAITING, 0);
1186 rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1187
1188 rt73usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
1189 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0, 47); /* CCK Signal */
1190 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0_VALID, 1);
1191 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1, 30); /* Rssi */
1192 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1_VALID, 1);
1193 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2, 42); /* OFDM Rate */
1194 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2_VALID, 1);
1195 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3, 30); /* Rssi */
1196 rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3_VALID, 1);
1197 rt73usb_register_write(rt2x00dev, TXRX_CSR1, reg);
1198
1199 /*
1200 * CCK TXD BBP registers
1201 */
1202 rt73usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1203 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0, 13);
1204 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0_VALID, 1);
1205 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1, 12);
1206 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1_VALID, 1);
1207 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2, 11);
1208 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2_VALID, 1);
1209 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3, 10);
1210 rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3_VALID, 1);
1211 rt73usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1212
1213 /*
1214 * OFDM TXD BBP registers
1215 */
1216 rt73usb_register_read(rt2x00dev, TXRX_CSR3, &reg);
1217 rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0, 7);
1218 rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0_VALID, 1);
1219 rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1, 6);
1220 rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1_VALID, 1);
1221 rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2, 5);
1222 rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2_VALID, 1);
1223 rt73usb_register_write(rt2x00dev, TXRX_CSR3, reg);
1224
1225 rt73usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
1226 rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_6MBS, 59);
1227 rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_9MBS, 53);
1228 rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_12MBS, 49);
1229 rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_18MBS, 46);
1230 rt73usb_register_write(rt2x00dev, TXRX_CSR7, reg);
1231
1232 rt73usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
1233 rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_24MBS, 44);
1234 rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_36MBS, 42);
1235 rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_48MBS, 42);
1236 rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_54MBS, 42);
1237 rt73usb_register_write(rt2x00dev, TXRX_CSR8, reg);
1238
1239 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
1240 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_INTERVAL, 0);
1241 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 0);
1242 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_SYNC, 0);
1243 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 0);
1244 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
1245 rt2x00_set_field32(&reg, TXRX_CSR9_TIMESTAMP_COMPENSATE, 0);
1246 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
1247
1248 rt73usb_register_write(rt2x00dev, TXRX_CSR15, 0x0000000f);
1249
1250 rt73usb_register_read(rt2x00dev, MAC_CSR6, &reg);
1251 rt2x00_set_field32(&reg, MAC_CSR6_MAX_FRAME_UNIT, 0xfff);
1252 rt73usb_register_write(rt2x00dev, MAC_CSR6, reg);
1253
1254 rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00000718);
1255
1256 if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
1257 return -EBUSY;
1258
1259 rt73usb_register_write(rt2x00dev, MAC_CSR13, 0x00007f00);
1260
1261 /*
1262 * Invalidate all Shared Keys (SEC_CSR0),
1263 * and clear the Shared key Cipher algorithms (SEC_CSR1 & SEC_CSR5)
1264 */
1265 rt73usb_register_write(rt2x00dev, SEC_CSR0, 0x00000000);
1266 rt73usb_register_write(rt2x00dev, SEC_CSR1, 0x00000000);
1267 rt73usb_register_write(rt2x00dev, SEC_CSR5, 0x00000000);
1268
1269 reg = 0x000023b0;
1270 if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
1271 rt2x00_rf(&rt2x00dev->chip, RF2527))
1272 rt2x00_set_field32(&reg, PHY_CSR1_RF_RPI, 1);
1273 rt73usb_register_write(rt2x00dev, PHY_CSR1, reg);
1274
1275 rt73usb_register_write(rt2x00dev, PHY_CSR5, 0x00040a06);
1276 rt73usb_register_write(rt2x00dev, PHY_CSR6, 0x00080606);
1277 rt73usb_register_write(rt2x00dev, PHY_CSR7, 0x00000408);
1278
1279 rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
1280 rt2x00_set_field32(&reg, MAC_CSR9_CW_SELECT, 0);
1281 rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
1282
1283 /*
1284 * Clear all beacons
1285 * For the Beacon base registers we only need to clear
1286 * the first byte since that byte contains the VALID and OWNER
1287 * bits which (when set to 0) will invalidate the entire beacon.
1288 */
1289 rt73usb_register_write(rt2x00dev, HW_BEACON_BASE0, 0);
1290 rt73usb_register_write(rt2x00dev, HW_BEACON_BASE1, 0);
1291 rt73usb_register_write(rt2x00dev, HW_BEACON_BASE2, 0);
1292 rt73usb_register_write(rt2x00dev, HW_BEACON_BASE3, 0);
1293
1294 /*
1295 * We must clear the error counters.
1296 * These registers are cleared on read,
1297 * so we may pass a useless variable to store the value.
1298 */
1299 rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
1300 rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
1301 rt73usb_register_read(rt2x00dev, STA_CSR2, &reg);
1302
1303 /*
1304 * Reset MAC and BBP registers.
1305 */
1306 rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1307 rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 1);
1308 rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 1);
1309 rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1310
1311 rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1312 rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 0);
1313 rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 0);
1314 rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1315
1316 rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1317 rt2x00_set_field32(&reg, MAC_CSR1_HOST_READY, 1);
1318 rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1319
1320 return 0;
1321 }
1322
1323 static int rt73usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
1324 {
1325 unsigned int i;
1326 u8 value;
1327
1328 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1329 rt73usb_bbp_read(rt2x00dev, 0, &value);
1330 if ((value != 0xff) && (value != 0x00))
1331 return 0;
1332 udelay(REGISTER_BUSY_DELAY);
1333 }
1334
1335 ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
1336 return -EACCES;
1337 }
1338
1339 static int rt73usb_init_bbp(struct rt2x00_dev *rt2x00dev)
1340 {
1341 unsigned int i;
1342 u16 eeprom;
1343 u8 reg_id;
1344 u8 value;
1345
1346 if (unlikely(rt73usb_wait_bbp_ready(rt2x00dev)))
1347 return -EACCES;
1348
1349 rt73usb_bbp_write(rt2x00dev, 3, 0x80);
1350 rt73usb_bbp_write(rt2x00dev, 15, 0x30);
1351 rt73usb_bbp_write(rt2x00dev, 21, 0xc8);
1352 rt73usb_bbp_write(rt2x00dev, 22, 0x38);
1353 rt73usb_bbp_write(rt2x00dev, 23, 0x06);
1354 rt73usb_bbp_write(rt2x00dev, 24, 0xfe);
1355 rt73usb_bbp_write(rt2x00dev, 25, 0x0a);
1356 rt73usb_bbp_write(rt2x00dev, 26, 0x0d);
1357 rt73usb_bbp_write(rt2x00dev, 32, 0x0b);
1358 rt73usb_bbp_write(rt2x00dev, 34, 0x12);
1359 rt73usb_bbp_write(rt2x00dev, 37, 0x07);
1360 rt73usb_bbp_write(rt2x00dev, 39, 0xf8);
1361 rt73usb_bbp_write(rt2x00dev, 41, 0x60);
1362 rt73usb_bbp_write(rt2x00dev, 53, 0x10);
1363 rt73usb_bbp_write(rt2x00dev, 54, 0x18);
1364 rt73usb_bbp_write(rt2x00dev, 60, 0x10);
1365 rt73usb_bbp_write(rt2x00dev, 61, 0x04);
1366 rt73usb_bbp_write(rt2x00dev, 62, 0x04);
1367 rt73usb_bbp_write(rt2x00dev, 75, 0xfe);
1368 rt73usb_bbp_write(rt2x00dev, 86, 0xfe);
1369 rt73usb_bbp_write(rt2x00dev, 88, 0xfe);
1370 rt73usb_bbp_write(rt2x00dev, 90, 0x0f);
1371 rt73usb_bbp_write(rt2x00dev, 99, 0x00);
1372 rt73usb_bbp_write(rt2x00dev, 102, 0x16);
1373 rt73usb_bbp_write(rt2x00dev, 107, 0x04);
1374
1375 for (i = 0; i < EEPROM_BBP_SIZE; i++) {
1376 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
1377
1378 if (eeprom != 0xffff && eeprom != 0x0000) {
1379 reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
1380 value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
1381 rt73usb_bbp_write(rt2x00dev, reg_id, value);
1382 }
1383 }
1384
1385 return 0;
1386 }
1387
1388 /*
1389 * Device state switch handlers.
1390 */
1391 static void rt73usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
1392 enum dev_state state)
1393 {
1394 u32 reg;
1395
1396 rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1397 rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX,
1398 (state == STATE_RADIO_RX_OFF) ||
1399 (state == STATE_RADIO_RX_OFF_LINK));
1400 rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1401 }
1402
1403 static int rt73usb_enable_radio(struct rt2x00_dev *rt2x00dev)
1404 {
1405 /*
1406 * Initialize all registers.
1407 */
1408 if (unlikely(rt73usb_init_registers(rt2x00dev) ||
1409 rt73usb_init_bbp(rt2x00dev)))
1410 return -EIO;
1411
1412 return 0;
1413 }
1414
1415 static void rt73usb_disable_radio(struct rt2x00_dev *rt2x00dev)
1416 {
1417 rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00001818);
1418
1419 /*
1420 * Disable synchronisation.
1421 */
1422 rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
1423
1424 rt2x00usb_disable_radio(rt2x00dev);
1425 }
1426
1427 static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
1428 {
1429 u32 reg;
1430 unsigned int i;
1431 char put_to_sleep;
1432
1433 put_to_sleep = (state != STATE_AWAKE);
1434
1435 rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1436 rt2x00_set_field32(&reg, MAC_CSR12_FORCE_WAKEUP, !put_to_sleep);
1437 rt2x00_set_field32(&reg, MAC_CSR12_PUT_TO_SLEEP, put_to_sleep);
1438 rt73usb_register_write(rt2x00dev, MAC_CSR12, reg);
1439
1440 /*
1441 * Device is not guaranteed to be in the requested state yet.
1442 * We must wait until the register indicates that the
1443 * device has entered the correct state.
1444 */
1445 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1446 rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1447 state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
1448 if (state == !put_to_sleep)
1449 return 0;
1450 msleep(10);
1451 }
1452
1453 return -EBUSY;
1454 }
1455
1456 static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1457 enum dev_state state)
1458 {
1459 int retval = 0;
1460
1461 switch (state) {
1462 case STATE_RADIO_ON:
1463 retval = rt73usb_enable_radio(rt2x00dev);
1464 break;
1465 case STATE_RADIO_OFF:
1466 rt73usb_disable_radio(rt2x00dev);
1467 break;
1468 case STATE_RADIO_RX_ON:
1469 case STATE_RADIO_RX_ON_LINK:
1470 case STATE_RADIO_RX_OFF:
1471 case STATE_RADIO_RX_OFF_LINK:
1472 rt73usb_toggle_rx(rt2x00dev, state);
1473 break;
1474 case STATE_RADIO_IRQ_ON:
1475 case STATE_RADIO_IRQ_OFF:
1476 /* No support, but no error either */
1477 break;
1478 case STATE_DEEP_SLEEP:
1479 case STATE_SLEEP:
1480 case STATE_STANDBY:
1481 case STATE_AWAKE:
1482 retval = rt73usb_set_state(rt2x00dev, state);
1483 break;
1484 default:
1485 retval = -ENOTSUPP;
1486 break;
1487 }
1488
1489 if (unlikely(retval))
1490 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1491 state, retval);
1492
1493 return retval;
1494 }
1495
1496 /*
1497 * TX descriptor initialization
1498 */
1499 static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1500 struct sk_buff *skb,
1501 struct txentry_desc *txdesc)
1502 {
1503 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1504 __le32 *txd = skbdesc->desc;
1505 u32 word;
1506
1507 /*
1508 * Start writing the descriptor words.
1509 */
1510 rt2x00_desc_read(txd, 1, &word);
1511 rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, txdesc->queue);
1512 rt2x00_set_field32(&word, TXD_W1_AIFSN, txdesc->aifs);
1513 rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1514 rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1515 rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, txdesc->iv_offset);
1516 rt2x00_set_field32(&word, TXD_W1_HW_SEQUENCE,
1517 test_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags));
1518 rt2x00_desc_write(txd, 1, word);
1519
1520 rt2x00_desc_read(txd, 2, &word);
1521 rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1522 rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1523 rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1524 rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1525 rt2x00_desc_write(txd, 2, word);
1526
1527 if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags)) {
1528 _rt2x00_desc_write(txd, 3, skbdesc->iv);
1529 _rt2x00_desc_write(txd, 4, skbdesc->eiv);
1530 }
1531
1532 rt2x00_desc_read(txd, 5, &word);
1533 rt2x00_set_field32(&word, TXD_W5_TX_POWER,
1534 TXPOWER_TO_DEV(rt2x00dev->tx_power));
1535 rt2x00_set_field32(&word, TXD_W5_WAITING_DMA_DONE_INT, 1);
1536 rt2x00_desc_write(txd, 5, word);
1537
1538 rt2x00_desc_read(txd, 0, &word);
1539 rt2x00_set_field32(&word, TXD_W0_BURST,
1540 test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1541 rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1542 rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1543 test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1544 rt2x00_set_field32(&word, TXD_W0_ACK,
1545 test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1546 rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1547 test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1548 rt2x00_set_field32(&word, TXD_W0_OFDM,
1549 test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1550 rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1551 rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1552 test_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags));
1553 rt2x00_set_field32(&word, TXD_W0_TKIP_MIC,
1554 test_bit(ENTRY_TXD_ENCRYPT_MMIC, &txdesc->flags));
1555 rt2x00_set_field32(&word, TXD_W0_KEY_TABLE,
1556 test_bit(ENTRY_TXD_ENCRYPT_PAIRWISE, &txdesc->flags));
1557 rt2x00_set_field32(&word, TXD_W0_KEY_INDEX, txdesc->key_idx);
1558 rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skb->len);
1559 rt2x00_set_field32(&word, TXD_W0_BURST2,
1560 test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1561 rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, txdesc->cipher);
1562 rt2x00_desc_write(txd, 0, word);
1563 }
1564
1565 /*
1566 * TX data initialization
1567 */
1568 static void rt73usb_write_beacon(struct queue_entry *entry)
1569 {
1570 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1571 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1572 unsigned int beacon_base;
1573 u32 reg;
1574
1575 /*
1576 * Add the descriptor in front of the skb.
1577 */
1578 skb_push(entry->skb, entry->queue->desc_size);
1579 memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len);
1580 skbdesc->desc = entry->skb->data;
1581
1582 /*
1583 * Disable beaconing while we are reloading the beacon data,
1584 * otherwise we might be sending out invalid data.
1585 */
1586 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
1587 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 0);
1588 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 0);
1589 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
1590 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
1591
1592 /*
1593 * Write entire beacon with descriptor to register.
1594 */
1595 beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
1596 rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
1597 USB_VENDOR_REQUEST_OUT, beacon_base,
1598 entry->skb->data, entry->skb->len,
1599 REGISTER_TIMEOUT32(entry->skb->len));
1600
1601 /*
1602 * Clean up the beacon skb.
1603 */
1604 dev_kfree_skb(entry->skb);
1605 entry->skb = NULL;
1606 }
1607
1608 static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1609 struct sk_buff *skb)
1610 {
1611 int length;
1612
1613 /*
1614 * The length _must_ be a multiple of 4,
1615 * but it must _not_ be a multiple of the USB packet size.
1616 */
1617 length = roundup(skb->len, 4);
1618 length += (4 * !(length % rt2x00dev->usb_maxpacket));
1619
1620 return length;
1621 }
1622
1623 static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1624 const enum data_queue_qid queue)
1625 {
1626 u32 reg;
1627
1628 if (queue != QID_BEACON) {
1629 rt2x00usb_kick_tx_queue(rt2x00dev, queue);
1630 return;
1631 }
1632
1633 /*
1634 * For Wi-Fi faily generated beacons between participating stations.
1635 * Set TBTT phase adaptive adjustment step to 8us (default 16us)
1636 */
1637 rt73usb_register_write(rt2x00dev, TXRX_CSR10, 0x00001008);
1638
1639 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
1640 if (!rt2x00_get_field32(reg, TXRX_CSR9_BEACON_GEN)) {
1641 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 1);
1642 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 1);
1643 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
1644 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
1645 }
1646 }
1647
1648 /*
1649 * RX control handlers
1650 */
1651 static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
1652 {
1653 u8 offset = rt2x00dev->lna_gain;
1654 u8 lna;
1655
1656 lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
1657 switch (lna) {
1658 case 3:
1659 offset += 90;
1660 break;
1661 case 2:
1662 offset += 74;
1663 break;
1664 case 1:
1665 offset += 64;
1666 break;
1667 default:
1668 return 0;
1669 }
1670
1671 if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
1672 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
1673 if (lna == 3 || lna == 2)
1674 offset += 10;
1675 } else {
1676 if (lna == 3)
1677 offset += 6;
1678 else if (lna == 2)
1679 offset += 8;
1680 }
1681 }
1682
1683 return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
1684 }
1685
1686 static void rt73usb_fill_rxdone(struct queue_entry *entry,
1687 struct rxdone_entry_desc *rxdesc)
1688 {
1689 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1690 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1691 __le32 *rxd = (__le32 *)entry->skb->data;
1692 u32 word0;
1693 u32 word1;
1694
1695 /*
1696 * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1697 * frame data in rt2x00usb.
1698 */
1699 memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1700 rxd = (__le32 *)skbdesc->desc;
1701
1702 /*
1703 * It is now safe to read the descriptor on all architectures.
1704 */
1705 rt2x00_desc_read(rxd, 0, &word0);
1706 rt2x00_desc_read(rxd, 1, &word1);
1707
1708 if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1709 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1710
1711 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) {
1712 rxdesc->cipher =
1713 rt2x00_get_field32(word0, RXD_W0_CIPHER_ALG);
1714 rxdesc->cipher_status =
1715 rt2x00_get_field32(word0, RXD_W0_CIPHER_ERROR);
1716 }
1717
1718 if (rxdesc->cipher != CIPHER_NONE) {
1719 _rt2x00_desc_read(rxd, 2, &rxdesc->iv);
1720 _rt2x00_desc_read(rxd, 3, &rxdesc->eiv);
1721 _rt2x00_desc_read(rxd, 4, &rxdesc->icv);
1722
1723 /*
1724 * Hardware has stripped IV/EIV data from 802.11 frame during
1725 * decryption. It has provided the data seperately but rt2x00lib
1726 * should decide if it should be reinserted.
1727 */
1728 rxdesc->flags |= RX_FLAG_IV_STRIPPED;
1729
1730 /*
1731 * FIXME: Legacy driver indicates that the frame does
1732 * contain the Michael Mic. Unfortunately, in rt2x00
1733 * the MIC seems to be missing completely...
1734 */
1735 rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
1736
1737 if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
1738 rxdesc->flags |= RX_FLAG_DECRYPTED;
1739 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
1740 rxdesc->flags |= RX_FLAG_MMIC_ERROR;
1741 }
1742
1743 /*
1744 * Obtain the status about this packet.
1745 * When frame was received with an OFDM bitrate,
1746 * the signal is the PLCP value. If it was received with
1747 * a CCK bitrate the signal is the rate in 100kbit/s.
1748 */
1749 rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1750 rxdesc->rssi = rt73usb_agc_to_rssi(rt2x00dev, word1);
1751 rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1752
1753 if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1754 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1755 else
1756 rxdesc->dev_flags |= RXDONE_SIGNAL_BITRATE;
1757 if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1758 rxdesc->dev_flags |= RXDONE_MY_BSS;
1759
1760 /*
1761 * Set skb pointers, and update frame information.
1762 */
1763 skb_pull(entry->skb, entry->queue->desc_size);
1764 skb_trim(entry->skb, rxdesc->size);
1765 }
1766
1767 /*
1768 * Device probe functions.
1769 */
1770 static int rt73usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1771 {
1772 u16 word;
1773 u8 *mac;
1774 s8 value;
1775
1776 rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1777
1778 /*
1779 * Start validation of the data that has been read.
1780 */
1781 mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1782 if (!is_valid_ether_addr(mac)) {
1783 random_ether_addr(mac);
1784 EEPROM(rt2x00dev, "MAC: %pM\n", mac);
1785 }
1786
1787 rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1788 if (word == 0xffff) {
1789 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1790 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1791 ANTENNA_B);
1792 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1793 ANTENNA_B);
1794 rt2x00_set_field16(&word, EEPROM_ANTENNA_FRAME_TYPE, 0);
1795 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1796 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1797 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF5226);
1798 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1799 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1800 }
1801
1802 rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1803 if (word == 0xffff) {
1804 rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA, 0);
1805 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1806 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1807 }
1808
1809 rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &word);
1810 if (word == 0xffff) {
1811 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_G, 0);
1812 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_A, 0);
1813 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_ACT, 0);
1814 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_0, 0);
1815 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_1, 0);
1816 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_2, 0);
1817 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_3, 0);
1818 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_4, 0);
1819 rt2x00_set_field16(&word, EEPROM_LED_LED_MODE,
1820 LED_MODE_DEFAULT);
1821 rt2x00_eeprom_write(rt2x00dev, EEPROM_LED, word);
1822 EEPROM(rt2x00dev, "Led: 0x%04x\n", word);
1823 }
1824
1825 rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &word);
1826 if (word == 0xffff) {
1827 rt2x00_set_field16(&word, EEPROM_FREQ_OFFSET, 0);
1828 rt2x00_set_field16(&word, EEPROM_FREQ_SEQ, 0);
1829 rt2x00_eeprom_write(rt2x00dev, EEPROM_FREQ, word);
1830 EEPROM(rt2x00dev, "Freq: 0x%04x\n", word);
1831 }
1832
1833 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &word);
1834 if (word == 0xffff) {
1835 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1836 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1837 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1838 EEPROM(rt2x00dev, "RSSI OFFSET BG: 0x%04x\n", word);
1839 } else {
1840 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_1);
1841 if (value < -10 || value > 10)
1842 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1843 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_2);
1844 if (value < -10 || value > 10)
1845 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1846 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1847 }
1848
1849 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &word);
1850 if (word == 0xffff) {
1851 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1852 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1853 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1854 EEPROM(rt2x00dev, "RSSI OFFSET A: 0x%04x\n", word);
1855 } else {
1856 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_1);
1857 if (value < -10 || value > 10)
1858 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1859 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_2);
1860 if (value < -10 || value > 10)
1861 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1862 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1863 }
1864
1865 return 0;
1866 }
1867
1868 static int rt73usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1869 {
1870 u32 reg;
1871 u16 value;
1872 u16 eeprom;
1873
1874 /*
1875 * Read EEPROM word for configuration.
1876 */
1877 rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1878
1879 /*
1880 * Identify RF chipset.
1881 */
1882 value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1883 rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1884 rt2x00_set_chip(rt2x00dev, RT2571, value, reg);
1885
1886 if (!rt2x00_check_rev(&rt2x00dev->chip, 0x25730)) {
1887 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1888 return -ENODEV;
1889 }
1890
1891 if (!rt2x00_rf(&rt2x00dev->chip, RF5226) &&
1892 !rt2x00_rf(&rt2x00dev->chip, RF2528) &&
1893 !rt2x00_rf(&rt2x00dev->chip, RF5225) &&
1894 !rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1895 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1896 return -ENODEV;
1897 }
1898
1899 /*
1900 * Identify default antenna configuration.
1901 */
1902 rt2x00dev->default_ant.tx =
1903 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1904 rt2x00dev->default_ant.rx =
1905 rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1906
1907 /*
1908 * Read the Frame type.
1909 */
1910 if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_FRAME_TYPE))
1911 __set_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags);
1912
1913 /*
1914 * Read frequency offset.
1915 */
1916 rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
1917 rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
1918
1919 /*
1920 * Read external LNA informations.
1921 */
1922 rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1923
1924 if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA)) {
1925 __set_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
1926 __set_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
1927 }
1928
1929 /*
1930 * Store led settings, for correct led behaviour.
1931 */
1932 #ifdef CONFIG_RT2X00_LIB_LEDS
1933 rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &eeprom);
1934
1935 rt73usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1936 rt73usb_init_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC);
1937 if (value == LED_MODE_SIGNAL_STRENGTH)
1938 rt73usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1939 LED_TYPE_QUALITY);
1940
1941 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_LED_MODE, value);
1942 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_0,
1943 rt2x00_get_field16(eeprom,
1944 EEPROM_LED_POLARITY_GPIO_0));
1945 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_1,
1946 rt2x00_get_field16(eeprom,
1947 EEPROM_LED_POLARITY_GPIO_1));
1948 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_2,
1949 rt2x00_get_field16(eeprom,
1950 EEPROM_LED_POLARITY_GPIO_2));
1951 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_3,
1952 rt2x00_get_field16(eeprom,
1953 EEPROM_LED_POLARITY_GPIO_3));
1954 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_4,
1955 rt2x00_get_field16(eeprom,
1956 EEPROM_LED_POLARITY_GPIO_4));
1957 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_ACT,
1958 rt2x00_get_field16(eeprom, EEPROM_LED_POLARITY_ACT));
1959 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_BG,
1960 rt2x00_get_field16(eeprom,
1961 EEPROM_LED_POLARITY_RDY_G));
1962 rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_A,
1963 rt2x00_get_field16(eeprom,
1964 EEPROM_LED_POLARITY_RDY_A));
1965 #endif /* CONFIG_RT2X00_LIB_LEDS */
1966
1967 return 0;
1968 }
1969
1970 /*
1971 * RF value list for RF2528
1972 * Supports: 2.4 GHz
1973 */
1974 static const struct rf_channel rf_vals_bg_2528[] = {
1975 { 1, 0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1976 { 2, 0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1977 { 3, 0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1978 { 4, 0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1979 { 5, 0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1980 { 6, 0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1981 { 7, 0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1982 { 8, 0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1983 { 9, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1984 { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1985 { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1986 { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1987 { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1988 { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1989 };
1990
1991 /*
1992 * RF value list for RF5226
1993 * Supports: 2.4 GHz & 5.2 GHz
1994 */
1995 static const struct rf_channel rf_vals_5226[] = {
1996 { 1, 0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1997 { 2, 0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1998 { 3, 0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1999 { 4, 0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
2000 { 5, 0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
2001 { 6, 0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
2002 { 7, 0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
2003 { 8, 0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
2004 { 9, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
2005 { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
2006 { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
2007 { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
2008 { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
2009 { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
2010
2011 /* 802.11 UNI / HyperLan 2 */
2012 { 36, 0x00002c0c, 0x0000099a, 0x00098255, 0x000fea23 },
2013 { 40, 0x00002c0c, 0x000009a2, 0x00098255, 0x000fea03 },
2014 { 44, 0x00002c0c, 0x000009a6, 0x00098255, 0x000fea0b },
2015 { 48, 0x00002c0c, 0x000009aa, 0x00098255, 0x000fea13 },
2016 { 52, 0x00002c0c, 0x000009ae, 0x00098255, 0x000fea1b },
2017 { 56, 0x00002c0c, 0x000009b2, 0x00098255, 0x000fea23 },
2018 { 60, 0x00002c0c, 0x000009ba, 0x00098255, 0x000fea03 },
2019 { 64, 0x00002c0c, 0x000009be, 0x00098255, 0x000fea0b },
2020
2021 /* 802.11 HyperLan 2 */
2022 { 100, 0x00002c0c, 0x00000a2a, 0x000b8255, 0x000fea03 },
2023 { 104, 0x00002c0c, 0x00000a2e, 0x000b8255, 0x000fea0b },
2024 { 108, 0x00002c0c, 0x00000a32, 0x000b8255, 0x000fea13 },
2025 { 112, 0x00002c0c, 0x00000a36, 0x000b8255, 0x000fea1b },
2026 { 116, 0x00002c0c, 0x00000a3a, 0x000b8255, 0x000fea23 },
2027 { 120, 0x00002c0c, 0x00000a82, 0x000b8255, 0x000fea03 },
2028 { 124, 0x00002c0c, 0x00000a86, 0x000b8255, 0x000fea0b },
2029 { 128, 0x00002c0c, 0x00000a8a, 0x000b8255, 0x000fea13 },
2030 { 132, 0x00002c0c, 0x00000a8e, 0x000b8255, 0x000fea1b },
2031 { 136, 0x00002c0c, 0x00000a92, 0x000b8255, 0x000fea23 },
2032
2033 /* 802.11 UNII */
2034 { 140, 0x00002c0c, 0x00000a9a, 0x000b8255, 0x000fea03 },
2035 { 149, 0x00002c0c, 0x00000aa2, 0x000b8255, 0x000fea1f },
2036 { 153, 0x00002c0c, 0x00000aa6, 0x000b8255, 0x000fea27 },
2037 { 157, 0x00002c0c, 0x00000aae, 0x000b8255, 0x000fea07 },
2038 { 161, 0x00002c0c, 0x00000ab2, 0x000b8255, 0x000fea0f },
2039 { 165, 0x00002c0c, 0x00000ab6, 0x000b8255, 0x000fea17 },
2040
2041 /* MMAC(Japan)J52 ch 34,38,42,46 */
2042 { 34, 0x00002c0c, 0x0008099a, 0x000da255, 0x000d3a0b },
2043 { 38, 0x00002c0c, 0x0008099e, 0x000da255, 0x000d3a13 },
2044 { 42, 0x00002c0c, 0x000809a2, 0x000da255, 0x000d3a1b },
2045 { 46, 0x00002c0c, 0x000809a6, 0x000da255, 0x000d3a23 },
2046 };
2047
2048 /*
2049 * RF value list for RF5225 & RF2527
2050 * Supports: 2.4 GHz & 5.2 GHz
2051 */
2052 static const struct rf_channel rf_vals_5225_2527[] = {
2053 { 1, 0x00002ccc, 0x00004786, 0x00068455, 0x000ffa0b },
2054 { 2, 0x00002ccc, 0x00004786, 0x00068455, 0x000ffa1f },
2055 { 3, 0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa0b },
2056 { 4, 0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa1f },
2057 { 5, 0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa0b },
2058 { 6, 0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa1f },
2059 { 7, 0x00002ccc, 0x00004792, 0x00068455, 0x000ffa0b },
2060 { 8, 0x00002ccc, 0x00004792, 0x00068455, 0x000ffa1f },
2061 { 9, 0x00002ccc, 0x00004796, 0x00068455, 0x000ffa0b },
2062 { 10, 0x00002ccc, 0x00004796, 0x00068455, 0x000ffa1f },
2063 { 11, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa0b },
2064 { 12, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa1f },
2065 { 13, 0x00002ccc, 0x0000479e, 0x00068455, 0x000ffa0b },
2066 { 14, 0x00002ccc, 0x000047a2, 0x00068455, 0x000ffa13 },
2067
2068 /* 802.11 UNI / HyperLan 2 */
2069 { 36, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa23 },
2070 { 40, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa03 },
2071 { 44, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa0b },
2072 { 48, 0x00002ccc, 0x000049aa, 0x0009be55, 0x000ffa13 },
2073 { 52, 0x00002ccc, 0x000049ae, 0x0009ae55, 0x000ffa1b },
2074 { 56, 0x00002ccc, 0x000049b2, 0x0009ae55, 0x000ffa23 },
2075 { 60, 0x00002ccc, 0x000049ba, 0x0009ae55, 0x000ffa03 },
2076 { 64, 0x00002ccc, 0x000049be, 0x0009ae55, 0x000ffa0b },
2077
2078 /* 802.11 HyperLan 2 */
2079 { 100, 0x00002ccc, 0x00004a2a, 0x000bae55, 0x000ffa03 },
2080 { 104, 0x00002ccc, 0x00004a2e, 0x000bae55, 0x000ffa0b },
2081 { 108, 0x00002ccc, 0x00004a32, 0x000bae55, 0x000ffa13 },
2082 { 112, 0x00002ccc, 0x00004a36, 0x000bae55, 0x000ffa1b },
2083 { 116, 0x00002ccc, 0x00004a3a, 0x000bbe55, 0x000ffa23 },
2084 { 120, 0x00002ccc, 0x00004a82, 0x000bbe55, 0x000ffa03 },
2085 { 124, 0x00002ccc, 0x00004a86, 0x000bbe55, 0x000ffa0b },
2086 { 128, 0x00002ccc, 0x00004a8a, 0x000bbe55, 0x000ffa13 },
2087 { 132, 0x00002ccc, 0x00004a8e, 0x000bbe55, 0x000ffa1b },
2088 { 136, 0x00002ccc, 0x00004a92, 0x000bbe55, 0x000ffa23 },
2089
2090 /* 802.11 UNII */
2091 { 140, 0x00002ccc, 0x00004a9a, 0x000bbe55, 0x000ffa03 },
2092 { 149, 0x00002ccc, 0x00004aa2, 0x000bbe55, 0x000ffa1f },
2093 { 153, 0x00002ccc, 0x00004aa6, 0x000bbe55, 0x000ffa27 },
2094 { 157, 0x00002ccc, 0x00004aae, 0x000bbe55, 0x000ffa07 },
2095 { 161, 0x00002ccc, 0x00004ab2, 0x000bbe55, 0x000ffa0f },
2096 { 165, 0x00002ccc, 0x00004ab6, 0x000bbe55, 0x000ffa17 },
2097
2098 /* MMAC(Japan)J52 ch 34,38,42,46 */
2099 { 34, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa0b },
2100 { 38, 0x00002ccc, 0x0000499e, 0x0009be55, 0x000ffa13 },
2101 { 42, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa1b },
2102 { 46, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa23 },
2103 };
2104
2105
2106 static int rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
2107 {
2108 struct hw_mode_spec *spec = &rt2x00dev->spec;
2109 struct channel_info *info;
2110 char *tx_power;
2111 unsigned int i;
2112
2113 /*
2114 * Initialize all hw fields.
2115 */
2116 rt2x00dev->hw->flags =
2117 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
2118 IEEE80211_HW_SIGNAL_DBM;
2119 rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
2120
2121 SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
2122 SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
2123 rt2x00_eeprom_addr(rt2x00dev,
2124 EEPROM_MAC_ADDR_0));
2125
2126 /*
2127 * Initialize hw_mode information.
2128 */
2129 spec->supported_bands = SUPPORT_BAND_2GHZ;
2130 spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
2131
2132 if (rt2x00_rf(&rt2x00dev->chip, RF2528)) {
2133 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2528);
2134 spec->channels = rf_vals_bg_2528;
2135 } else if (rt2x00_rf(&rt2x00dev->chip, RF5226)) {
2136 spec->supported_bands |= SUPPORT_BAND_5GHZ;
2137 spec->num_channels = ARRAY_SIZE(rf_vals_5226);
2138 spec->channels = rf_vals_5226;
2139 } else if (rt2x00_rf(&rt2x00dev->chip, RF2527)) {
2140 spec->num_channels = 14;
2141 spec->channels = rf_vals_5225_2527;
2142 } else if (rt2x00_rf(&rt2x00dev->chip, RF5225)) {
2143 spec->supported_bands |= SUPPORT_BAND_5GHZ;
2144 spec->num_channels = ARRAY_SIZE(rf_vals_5225_2527);
2145 spec->channels = rf_vals_5225_2527;
2146 }
2147
2148 /*
2149 * Create channel information array
2150 */
2151 info = kzalloc(spec->num_channels * sizeof(*info), GFP_KERNEL);
2152 if (!info)
2153 return -ENOMEM;
2154
2155 spec->channels_info = info;
2156
2157 tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_G_START);
2158 for (i = 0; i < 14; i++)
2159 info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
2160
2161 if (spec->num_channels > 14) {
2162 tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A_START);
2163 for (i = 14; i < spec->num_channels; i++)
2164 info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
2165 }
2166
2167 return 0;
2168 }
2169
2170 static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
2171 {
2172 int retval;
2173
2174 /*
2175 * Allocate eeprom data.
2176 */
2177 retval = rt73usb_validate_eeprom(rt2x00dev);
2178 if (retval)
2179 return retval;
2180
2181 retval = rt73usb_init_eeprom(rt2x00dev);
2182 if (retval)
2183 return retval;
2184
2185 /*
2186 * Initialize hw specifications.
2187 */
2188 retval = rt73usb_probe_hw_mode(rt2x00dev);
2189 if (retval)
2190 return retval;
2191
2192 /*
2193 * This device requires firmware.
2194 */
2195 __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
2196 __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
2197 if (!modparam_nohwcrypt)
2198 __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
2199
2200 /*
2201 * Set the rssi offset.
2202 */
2203 rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
2204
2205 return 0;
2206 }
2207
2208 /*
2209 * IEEE80211 stack callback functions.
2210 */
2211 static int rt73usb_conf_tx(struct ieee80211_hw *hw, u16 queue_idx,
2212 const struct ieee80211_tx_queue_params *params)
2213 {
2214 struct rt2x00_dev *rt2x00dev = hw->priv;
2215 struct data_queue *queue;
2216 struct rt2x00_field32 field;
2217 int retval;
2218 u32 reg;
2219
2220 /*
2221 * First pass the configuration through rt2x00lib, that will
2222 * update the queue settings and validate the input. After that
2223 * we are free to update the registers based on the value
2224 * in the queue parameter.
2225 */
2226 retval = rt2x00mac_conf_tx(hw, queue_idx, params);
2227 if (retval)
2228 return retval;
2229
2230 queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
2231
2232 /* Update WMM TXOP register */
2233 if (queue_idx < 2) {
2234 field.bit_offset = queue_idx * 16;
2235 field.bit_mask = 0xffff << field.bit_offset;
2236
2237 rt73usb_register_read(rt2x00dev, AC_TXOP_CSR0, &reg);
2238 rt2x00_set_field32(&reg, field, queue->txop);
2239 rt73usb_register_write(rt2x00dev, AC_TXOP_CSR0, reg);
2240 } else if (queue_idx < 4) {
2241 field.bit_offset = (queue_idx - 2) * 16;
2242 field.bit_mask = 0xffff << field.bit_offset;
2243
2244 rt73usb_register_read(rt2x00dev, AC_TXOP_CSR1, &reg);
2245 rt2x00_set_field32(&reg, field, queue->txop);
2246 rt73usb_register_write(rt2x00dev, AC_TXOP_CSR1, reg);
2247 }
2248
2249 /* Update WMM registers */
2250 field.bit_offset = queue_idx * 4;
2251 field.bit_mask = 0xf << field.bit_offset;
2252
2253 rt73usb_register_read(rt2x00dev, AIFSN_CSR, &reg);
2254 rt2x00_set_field32(&reg, field, queue->aifs);
2255 rt73usb_register_write(rt2x00dev, AIFSN_CSR, reg);
2256
2257 rt73usb_register_read(rt2x00dev, CWMIN_CSR, &reg);
2258 rt2x00_set_field32(&reg, field, queue->cw_min);
2259 rt73usb_register_write(rt2x00dev, CWMIN_CSR, reg);
2260
2261 rt73usb_register_read(rt2x00dev, CWMAX_CSR, &reg);
2262 rt2x00_set_field32(&reg, field, queue->cw_max);
2263 rt73usb_register_write(rt2x00dev, CWMAX_CSR, reg);
2264
2265 return 0;
2266 }
2267
2268 #if 0
2269 /*
2270 * Mac80211 demands get_tsf must be atomic.
2271 * This is not possible for rt73usb since all register access
2272 * functions require sleeping. Untill mac80211 no longer needs
2273 * get_tsf to be atomic, this function should be disabled.
2274 */
2275 static u64 rt73usb_get_tsf(struct ieee80211_hw *hw)
2276 {
2277 struct rt2x00_dev *rt2x00dev = hw->priv;
2278 u64 tsf;
2279 u32 reg;
2280
2281 rt73usb_register_read(rt2x00dev, TXRX_CSR13, &reg);
2282 tsf = (u64) rt2x00_get_field32(reg, TXRX_CSR13_HIGH_TSFTIMER) << 32;
2283 rt73usb_register_read(rt2x00dev, TXRX_CSR12, &reg);
2284 tsf |= rt2x00_get_field32(reg, TXRX_CSR12_LOW_TSFTIMER);
2285
2286 return tsf;
2287 }
2288 #else
2289 #define rt73usb_get_tsf NULL
2290 #endif
2291
2292 static const struct ieee80211_ops rt73usb_mac80211_ops = {
2293 .tx = rt2x00mac_tx,
2294 .start = rt2x00mac_start,
2295 .stop = rt2x00mac_stop,
2296 .add_interface = rt2x00mac_add_interface,
2297 .remove_interface = rt2x00mac_remove_interface,
2298 .config = rt2x00mac_config,
2299 .config_interface = rt2x00mac_config_interface,
2300 .configure_filter = rt2x00mac_configure_filter,
2301 .set_key = rt2x00mac_set_key,
2302 .get_stats = rt2x00mac_get_stats,
2303 .bss_info_changed = rt2x00mac_bss_info_changed,
2304 .conf_tx = rt73usb_conf_tx,
2305 .get_tx_stats = rt2x00mac_get_tx_stats,
2306 .get_tsf = rt73usb_get_tsf,
2307 };
2308
2309 static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
2310 .probe_hw = rt73usb_probe_hw,
2311 .get_firmware_name = rt73usb_get_firmware_name,
2312 .get_firmware_crc = rt73usb_get_firmware_crc,
2313 .load_firmware = rt73usb_load_firmware,
2314 .initialize = rt2x00usb_initialize,
2315 .uninitialize = rt2x00usb_uninitialize,
2316 .clear_entry = rt2x00usb_clear_entry,
2317 .set_device_state = rt73usb_set_device_state,
2318 .link_stats = rt73usb_link_stats,
2319 .reset_tuner = rt73usb_reset_tuner,
2320 .link_tuner = rt73usb_link_tuner,
2321 .write_tx_desc = rt73usb_write_tx_desc,
2322 .write_tx_data = rt2x00usb_write_tx_data,
2323 .write_beacon = rt73usb_write_beacon,
2324 .get_tx_data_len = rt73usb_get_tx_data_len,
2325 .kick_tx_queue = rt73usb_kick_tx_queue,
2326 .fill_rxdone = rt73usb_fill_rxdone,
2327 .config_shared_key = rt73usb_config_shared_key,
2328 .config_pairwise_key = rt73usb_config_pairwise_key,
2329 .config_filter = rt73usb_config_filter,
2330 .config_intf = rt73usb_config_intf,
2331 .config_erp = rt73usb_config_erp,
2332 .config_ant = rt73usb_config_ant,
2333 .config = rt73usb_config,
2334 };
2335
2336 static const struct data_queue_desc rt73usb_queue_rx = {
2337 .entry_num = RX_ENTRIES,
2338 .data_size = DATA_FRAME_SIZE,
2339 .desc_size = RXD_DESC_SIZE,
2340 .priv_size = sizeof(struct queue_entry_priv_usb),
2341 };
2342
2343 static const struct data_queue_desc rt73usb_queue_tx = {
2344 .entry_num = TX_ENTRIES,
2345 .data_size = DATA_FRAME_SIZE,
2346 .desc_size = TXD_DESC_SIZE,
2347 .priv_size = sizeof(struct queue_entry_priv_usb),
2348 };
2349
2350 static const struct data_queue_desc rt73usb_queue_bcn = {
2351 .entry_num = 4 * BEACON_ENTRIES,
2352 .data_size = MGMT_FRAME_SIZE,
2353 .desc_size = TXINFO_SIZE,
2354 .priv_size = sizeof(struct queue_entry_priv_usb),
2355 };
2356
2357 static const struct rt2x00_ops rt73usb_ops = {
2358 .name = KBUILD_MODNAME,
2359 .max_sta_intf = 1,
2360 .max_ap_intf = 4,
2361 .eeprom_size = EEPROM_SIZE,
2362 .rf_size = RF_SIZE,
2363 .tx_queues = NUM_TX_QUEUES,
2364 .rx = &rt73usb_queue_rx,
2365 .tx = &rt73usb_queue_tx,
2366 .bcn = &rt73usb_queue_bcn,
2367 .lib = &rt73usb_rt2x00_ops,
2368 .hw = &rt73usb_mac80211_ops,
2369 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
2370 .debugfs = &rt73usb_rt2x00debug,
2371 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
2372 };
2373
2374 /*
2375 * rt73usb module information.
2376 */
2377 static struct usb_device_id rt73usb_device_table[] = {
2378 /* AboCom */
2379 { USB_DEVICE(0x07b8, 0xb21d), USB_DEVICE_DATA(&rt73usb_ops) },
2380 /* Askey */
2381 { USB_DEVICE(0x1690, 0x0722), USB_DEVICE_DATA(&rt73usb_ops) },
2382 /* ASUS */
2383 { USB_DEVICE(0x0b05, 0x1723), USB_DEVICE_DATA(&rt73usb_ops) },
2384 { USB_DEVICE(0x0b05, 0x1724), USB_DEVICE_DATA(&rt73usb_ops) },
2385 /* Belkin */
2386 { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt73usb_ops) },
2387 { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt73usb_ops) },
2388 { USB_DEVICE(0x050d, 0x905b), USB_DEVICE_DATA(&rt73usb_ops) },
2389 { USB_DEVICE(0x050d, 0x905c), USB_DEVICE_DATA(&rt73usb_ops) },
2390 /* Billionton */
2391 { USB_DEVICE(0x1631, 0xc019), USB_DEVICE_DATA(&rt73usb_ops) },
2392 /* Buffalo */
2393 { USB_DEVICE(0x0411, 0x00f4), USB_DEVICE_DATA(&rt73usb_ops) },
2394 /* CNet */
2395 { USB_DEVICE(0x1371, 0x9022), USB_DEVICE_DATA(&rt73usb_ops) },
2396 { USB_DEVICE(0x1371, 0x9032), USB_DEVICE_DATA(&rt73usb_ops) },
2397 /* Conceptronic */
2398 { USB_DEVICE(0x14b2, 0x3c22), USB_DEVICE_DATA(&rt73usb_ops) },
2399 /* Corega */
2400 { USB_DEVICE(0x07aa, 0x002e), USB_DEVICE_DATA(&rt73usb_ops) },
2401 /* D-Link */
2402 { USB_DEVICE(0x07d1, 0x3c03), USB_DEVICE_DATA(&rt73usb_ops) },
2403 { USB_DEVICE(0x07d1, 0x3c04), USB_DEVICE_DATA(&rt73usb_ops) },
2404 { USB_DEVICE(0x07d1, 0x3c06), USB_DEVICE_DATA(&rt73usb_ops) },
2405 { USB_DEVICE(0x07d1, 0x3c07), USB_DEVICE_DATA(&rt73usb_ops) },
2406 /* Gemtek */
2407 { USB_DEVICE(0x15a9, 0x0004), USB_DEVICE_DATA(&rt73usb_ops) },
2408 /* Gigabyte */
2409 { USB_DEVICE(0x1044, 0x8008), USB_DEVICE_DATA(&rt73usb_ops) },
2410 { USB_DEVICE(0x1044, 0x800a), USB_DEVICE_DATA(&rt73usb_ops) },
2411 /* Huawei-3Com */
2412 { USB_DEVICE(0x1472, 0x0009), USB_DEVICE_DATA(&rt73usb_ops) },
2413 /* Hercules */
2414 { USB_DEVICE(0x06f8, 0xe010), USB_DEVICE_DATA(&rt73usb_ops) },
2415 { USB_DEVICE(0x06f8, 0xe020), USB_DEVICE_DATA(&rt73usb_ops) },
2416 /* Linksys */
2417 { USB_DEVICE(0x13b1, 0x0020), USB_DEVICE_DATA(&rt73usb_ops) },
2418 { USB_DEVICE(0x13b1, 0x0023), USB_DEVICE_DATA(&rt73usb_ops) },
2419 /* MSI */
2420 { USB_DEVICE(0x0db0, 0x6877), USB_DEVICE_DATA(&rt73usb_ops) },
2421 { USB_DEVICE(0x0db0, 0x6874), USB_DEVICE_DATA(&rt73usb_ops) },
2422 { USB_DEVICE(0x0db0, 0xa861), USB_DEVICE_DATA(&rt73usb_ops) },
2423 { USB_DEVICE(0x0db0, 0xa874), USB_DEVICE_DATA(&rt73usb_ops) },
2424 /* Ralink */
2425 { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt73usb_ops) },
2426 { USB_DEVICE(0x148f, 0x2671), USB_DEVICE_DATA(&rt73usb_ops) },
2427 /* Qcom */
2428 { USB_DEVICE(0x18e8, 0x6196), USB_DEVICE_DATA(&rt73usb_ops) },
2429 { USB_DEVICE(0x18e8, 0x6229), USB_DEVICE_DATA(&rt73usb_ops) },
2430 { USB_DEVICE(0x18e8, 0x6238), USB_DEVICE_DATA(&rt73usb_ops) },
2431 /* Senao */
2432 { USB_DEVICE(0x1740, 0x7100), USB_DEVICE_DATA(&rt73usb_ops) },
2433 /* Sitecom */
2434 { USB_DEVICE(0x0df6, 0x9712), USB_DEVICE_DATA(&rt73usb_ops) },
2435 { USB_DEVICE(0x0df6, 0x90ac), USB_DEVICE_DATA(&rt73usb_ops) },
2436 /* Surecom */
2437 { USB_DEVICE(0x0769, 0x31f3), USB_DEVICE_DATA(&rt73usb_ops) },
2438 /* Planex */
2439 { USB_DEVICE(0x2019, 0xab01), USB_DEVICE_DATA(&rt73usb_ops) },
2440 { USB_DEVICE(0x2019, 0xab50), USB_DEVICE_DATA(&rt73usb_ops) },
2441 { 0, }
2442 };
2443
2444 MODULE_AUTHOR(DRV_PROJECT);
2445 MODULE_VERSION(DRV_VERSION);
2446 MODULE_DESCRIPTION("Ralink RT73 USB Wireless LAN driver.");
2447 MODULE_SUPPORTED_DEVICE("Ralink RT2571W & RT2671 USB chipset based cards");
2448 MODULE_DEVICE_TABLE(usb, rt73usb_device_table);
2449 MODULE_FIRMWARE(FIRMWARE_RT2571);
2450 MODULE_LICENSE("GPL");
2451
2452 static struct usb_driver rt73usb_driver = {
2453 .name = KBUILD_MODNAME,
2454 .id_table = rt73usb_device_table,
2455 .probe = rt2x00usb_probe,
2456 .disconnect = rt2x00usb_disconnect,
2457 .suspend = rt2x00usb_suspend,
2458 .resume = rt2x00usb_resume,
2459 };
2460
2461 static int __init rt73usb_init(void)
2462 {
2463 return usb_register(&rt73usb_driver);
2464 }
2465
2466 static void __exit rt73usb_exit(void)
2467 {
2468 usb_deregister(&rt73usb_driver);
2469 }
2470
2471 module_init(rt73usb_init);
2472 module_exit(rt73usb_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree