rt2x00: Cleanup TX/RX entry handling
[linux-2.6.git] / drivers / net / wireless / rt2x00 / rt2500usb.c
1 /*
2         Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3         <http://rt2x00.serialmonkey.com>
4
5         This program is free software; you can redistribute it and/or modify
6         it under the terms of the GNU General Public License as published by
7         the Free Software Foundation; either version 2 of the License, or
8         (at your option) any later version.
9
10         This program is distributed in the hope that it will be useful,
11         but WITHOUT ANY WARRANTY; without even the implied warranty of
12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13         GNU General Public License for more details.
14
15         You should have received a copy of the GNU General Public License
16         along with this program; if not, write to the
17         Free Software Foundation, Inc.,
18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  */
20
21 /*
22         Module: rt2500usb
23         Abstract: rt2500usb device specific routines.
24         Supported chipsets: RT2570.
25  */
26
27 #include <linux/delay.h>
28 #include <linux/etherdevice.h>
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/usb.h>
33
34 #include "rt2x00.h"
35 #include "rt2x00usb.h"
36 #include "rt2500usb.h"
37
38 /*
39  * Register access.
40  * All access to the CSR registers will go through the methods
41  * rt2500usb_register_read and rt2500usb_register_write.
42  * BBP and RF register require indirect register access,
43  * and use the CSR registers BBPCSR and RFCSR to achieve this.
44  * These indirect registers work with busy bits,
45  * and we will try maximal REGISTER_BUSY_COUNT times to access
46  * the register while taking a REGISTER_BUSY_DELAY us delay
47  * between each attampt. When the busy bit is still set at that time,
48  * the access attempt is considered to have failed,
49  * and we will print an error.
50  * If the usb_cache_mutex is already held then the _lock variants must
51  * be used instead.
52  */
53 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
54                                            const unsigned int offset,
55                                            u16 *value)
56 {
57         __le16 reg;
58         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
59                                       USB_VENDOR_REQUEST_IN, offset,
60                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
61         *value = le16_to_cpu(reg);
62 }
63
64 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
65                                                 const unsigned int offset,
66                                                 u16 *value)
67 {
68         __le16 reg;
69         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
70                                        USB_VENDOR_REQUEST_IN, offset,
71                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
72         *value = le16_to_cpu(reg);
73 }
74
75 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
76                                                 const unsigned int offset,
77                                                 void *value, const u16 length)
78 {
79         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
80                                       USB_VENDOR_REQUEST_IN, offset,
81                                       value, length,
82                                       REGISTER_TIMEOUT16(length));
83 }
84
85 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
86                                             const unsigned int offset,
87                                             u16 value)
88 {
89         __le16 reg = cpu_to_le16(value);
90         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
91                                       USB_VENDOR_REQUEST_OUT, offset,
92                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
93 }
94
95 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
96                                                  const unsigned int offset,
97                                                  u16 value)
98 {
99         __le16 reg = cpu_to_le16(value);
100         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
101                                        USB_VENDOR_REQUEST_OUT, offset,
102                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
103 }
104
105 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
106                                                  const unsigned int offset,
107                                                  void *value, const u16 length)
108 {
109         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
110                                       USB_VENDOR_REQUEST_OUT, offset,
111                                       value, length,
112                                       REGISTER_TIMEOUT16(length));
113 }
114
115 static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev)
116 {
117         u16 reg;
118         unsigned int i;
119
120         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
121                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR8, &reg);
122                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
123                         break;
124                 udelay(REGISTER_BUSY_DELAY);
125         }
126
127         return reg;
128 }
129
130 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
131                                 const unsigned int word, const u8 value)
132 {
133         u16 reg;
134
135         mutex_lock(&rt2x00dev->usb_cache_mutex);
136
137         /*
138          * Wait until the BBP becomes ready.
139          */
140         reg = rt2500usb_bbp_check(rt2x00dev);
141         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
142                 goto exit_fail;
143
144         /*
145          * Write the data into the BBP.
146          */
147         reg = 0;
148         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
149         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
150         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
151
152         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
153
154         mutex_unlock(&rt2x00dev->usb_cache_mutex);
155
156         return;
157
158 exit_fail:
159         mutex_unlock(&rt2x00dev->usb_cache_mutex);
160
161         ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
162 }
163
164 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
165                                const unsigned int word, u8 *value)
166 {
167         u16 reg;
168
169         mutex_lock(&rt2x00dev->usb_cache_mutex);
170
171         /*
172          * Wait until the BBP becomes ready.
173          */
174         reg = rt2500usb_bbp_check(rt2x00dev);
175         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
176                 goto exit_fail;
177
178         /*
179          * Write the request into the BBP.
180          */
181         reg = 0;
182         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
183         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
184
185         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
186
187         /*
188          * Wait until the BBP becomes ready.
189          */
190         reg = rt2500usb_bbp_check(rt2x00dev);
191         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
192                 goto exit_fail;
193
194         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
195         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
196
197         mutex_unlock(&rt2x00dev->usb_cache_mutex);
198
199         return;
200
201 exit_fail:
202         mutex_unlock(&rt2x00dev->usb_cache_mutex);
203
204         ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
205         *value = 0xff;
206 }
207
208 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
209                                const unsigned int word, const u32 value)
210 {
211         u16 reg;
212         unsigned int i;
213
214         if (!word)
215                 return;
216
217         mutex_lock(&rt2x00dev->usb_cache_mutex);
218
219         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
220                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR10, &reg);
221                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
222                         goto rf_write;
223                 udelay(REGISTER_BUSY_DELAY);
224         }
225
226         mutex_unlock(&rt2x00dev->usb_cache_mutex);
227         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
228         return;
229
230 rf_write:
231         reg = 0;
232         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
233         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
234
235         reg = 0;
236         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
237         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
238         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
239         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
240
241         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
242         rt2x00_rf_write(rt2x00dev, word, value);
243
244         mutex_unlock(&rt2x00dev->usb_cache_mutex);
245 }
246
247 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
248 static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
249                                      const unsigned int offset,
250                                      u32 *value)
251 {
252         rt2500usb_register_read(rt2x00dev, offset, (u16 *)value);
253 }
254
255 static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
256                                       const unsigned int offset,
257                                       u32 value)
258 {
259         rt2500usb_register_write(rt2x00dev, offset, value);
260 }
261
262 static const struct rt2x00debug rt2500usb_rt2x00debug = {
263         .owner  = THIS_MODULE,
264         .csr    = {
265                 .read           = _rt2500usb_register_read,
266                 .write          = _rt2500usb_register_write,
267                 .flags          = RT2X00DEBUGFS_OFFSET,
268                 .word_base      = CSR_REG_BASE,
269                 .word_size      = sizeof(u16),
270                 .word_count     = CSR_REG_SIZE / sizeof(u16),
271         },
272         .eeprom = {
273                 .read           = rt2x00_eeprom_read,
274                 .write          = rt2x00_eeprom_write,
275                 .word_base      = EEPROM_BASE,
276                 .word_size      = sizeof(u16),
277                 .word_count     = EEPROM_SIZE / sizeof(u16),
278         },
279         .bbp    = {
280                 .read           = rt2500usb_bbp_read,
281                 .write          = rt2500usb_bbp_write,
282                 .word_base      = BBP_BASE,
283                 .word_size      = sizeof(u8),
284                 .word_count     = BBP_SIZE / sizeof(u8),
285         },
286         .rf     = {
287                 .read           = rt2x00_rf_read,
288                 .write          = rt2500usb_rf_write,
289                 .word_base      = RF_BASE,
290                 .word_size      = sizeof(u32),
291                 .word_count     = RF_SIZE / sizeof(u32),
292         },
293 };
294 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
295
296 #ifdef CONFIG_RT2X00_LIB_LEDS
297 static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
298                                      enum led_brightness brightness)
299 {
300         struct rt2x00_led *led =
301             container_of(led_cdev, struct rt2x00_led, led_dev);
302         unsigned int enabled = brightness != LED_OFF;
303         u16 reg;
304
305         rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, &reg);
306
307         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
308                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, enabled);
309         else if (led->type == LED_TYPE_ACTIVITY)
310                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, enabled);
311
312         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
313 }
314
315 static int rt2500usb_blink_set(struct led_classdev *led_cdev,
316                                unsigned long *delay_on,
317                                unsigned long *delay_off)
318 {
319         struct rt2x00_led *led =
320             container_of(led_cdev, struct rt2x00_led, led_dev);
321         u16 reg;
322
323         rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, &reg);
324         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, *delay_on);
325         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, *delay_off);
326         rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
327
328         return 0;
329 }
330
331 static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
332                                struct rt2x00_led *led,
333                                enum led_type type)
334 {
335         led->rt2x00dev = rt2x00dev;
336         led->type = type;
337         led->led_dev.brightness_set = rt2500usb_brightness_set;
338         led->led_dev.blink_set = rt2500usb_blink_set;
339         led->flags = LED_INITIALIZED;
340 }
341 #endif /* CONFIG_RT2X00_LIB_LEDS */
342
343 /*
344  * Configuration handlers.
345  */
346 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
347                                     const unsigned int filter_flags)
348 {
349         u16 reg;
350
351         /*
352          * Start configuration steps.
353          * Note that the version error will always be dropped
354          * and broadcast frames will always be accepted since
355          * there is no filter for it at this time.
356          */
357         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
358         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
359                            !(filter_flags & FIF_FCSFAIL));
360         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
361                            !(filter_flags & FIF_PLCPFAIL));
362         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
363                            !(filter_flags & FIF_CONTROL));
364         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
365                            !(filter_flags & FIF_PROMISC_IN_BSS));
366         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
367                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
368                            !rt2x00dev->intf_ap_count);
369         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
370         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
371                            !(filter_flags & FIF_ALLMULTI));
372         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
373         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
374 }
375
376 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
377                                   struct rt2x00_intf *intf,
378                                   struct rt2x00intf_conf *conf,
379                                   const unsigned int flags)
380 {
381         unsigned int bcn_preload;
382         u16 reg;
383
384         if (flags & CONFIG_UPDATE_TYPE) {
385                 /*
386                  * Enable beacon config
387                  */
388                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
389                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
390                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
391                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
392                                    2 * (conf->type != NL80211_IFTYPE_STATION));
393                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
394
395                 /*
396                  * Enable synchronisation.
397                  */
398                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
399                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
400                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
401
402                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
403                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
404                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
405                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
406                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
407         }
408
409         if (flags & CONFIG_UPDATE_MAC)
410                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
411                                               (3 * sizeof(__le16)));
412
413         if (flags & CONFIG_UPDATE_BSSID)
414                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
415                                               (3 * sizeof(__le16)));
416 }
417
418 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
419                                  struct rt2x00lib_erp *erp)
420 {
421         u16 reg;
422
423         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
424         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
425         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
426
427         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
428         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
429                            !!erp->short_preamble);
430         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
431
432         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, erp->basic_rates);
433
434         rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time);
435         rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs);
436         rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs);
437 }
438
439 static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev,
440                                  struct antenna_setup *ant)
441 {
442         u8 r2;
443         u8 r14;
444         u16 csr5;
445         u16 csr6;
446
447         /*
448          * We should never come here because rt2x00lib is supposed
449          * to catch this and send us the correct antenna explicitely.
450          */
451         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
452                ant->tx == ANTENNA_SW_DIVERSITY);
453
454         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
455         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
456         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
457         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
458
459         /*
460          * Configure the TX antenna.
461          */
462         switch (ant->tx) {
463         case ANTENNA_HW_DIVERSITY:
464                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
465                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
466                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
467                 break;
468         case ANTENNA_A:
469                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
470                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
471                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
472                 break;
473         case ANTENNA_B:
474         default:
475                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
476                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
477                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
478                 break;
479         }
480
481         /*
482          * Configure the RX antenna.
483          */
484         switch (ant->rx) {
485         case ANTENNA_HW_DIVERSITY:
486                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
487                 break;
488         case ANTENNA_A:
489                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
490                 break;
491         case ANTENNA_B:
492         default:
493                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
494                 break;
495         }
496
497         /*
498          * RT2525E and RT5222 need to flip TX I/Q
499          */
500         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
501             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
502                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
503                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
504                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
505
506                 /*
507                  * RT2525E does not need RX I/Q Flip.
508                  */
509                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
510                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
511         } else {
512                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
513                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
514         }
515
516         rt2500usb_bbp_write(rt2x00dev, 2, r2);
517         rt2500usb_bbp_write(rt2x00dev, 14, r14);
518         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
519         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
520 }
521
522 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
523                                      struct rf_channel *rf, const int txpower)
524 {
525         /*
526          * Set TXpower.
527          */
528         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
529
530         /*
531          * For RT2525E we should first set the channel to half band higher.
532          */
533         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
534                 static const u32 vals[] = {
535                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
536                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
537                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
538                         0x00000902, 0x00000906
539                 };
540
541                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
542                 if (rf->rf4)
543                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
544         }
545
546         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
547         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
548         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
549         if (rf->rf4)
550                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
551 }
552
553 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
554                                      const int txpower)
555 {
556         u32 rf3;
557
558         rt2x00_rf_read(rt2x00dev, 3, &rf3);
559         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
560         rt2500usb_rf_write(rt2x00dev, 3, rf3);
561 }
562
563 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
564                                       struct rt2x00lib_conf *libconf)
565 {
566         u16 reg;
567
568         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
569         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
570                            libconf->conf->beacon_int * 4);
571         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
572 }
573
574 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
575                              struct rt2x00lib_conf *libconf,
576                              const unsigned int flags)
577 {
578         if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
579                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
580                                          libconf->conf->power_level);
581         if ((flags & IEEE80211_CONF_CHANGE_POWER) &&
582             !(flags & IEEE80211_CONF_CHANGE_CHANNEL))
583                 rt2500usb_config_txpower(rt2x00dev,
584                                          libconf->conf->power_level);
585         if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL)
586                 rt2500usb_config_duration(rt2x00dev, libconf);
587 }
588
589 /*
590  * Link tuning
591  */
592 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
593                                  struct link_qual *qual)
594 {
595         u16 reg;
596
597         /*
598          * Update FCS error count from register.
599          */
600         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
601         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
602
603         /*
604          * Update False CCA count from register.
605          */
606         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
607         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
608 }
609
610 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
611 {
612         u16 eeprom;
613         u16 value;
614
615         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
616         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
617         rt2500usb_bbp_write(rt2x00dev, 24, value);
618
619         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
620         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
621         rt2500usb_bbp_write(rt2x00dev, 25, value);
622
623         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
624         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
625         rt2500usb_bbp_write(rt2x00dev, 61, value);
626
627         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
628         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
629         rt2500usb_bbp_write(rt2x00dev, 17, value);
630
631         rt2x00dev->link.vgc_level = value;
632 }
633
634 /*
635  * NOTE: This function is directly ported from legacy driver, but
636  * despite it being declared it was never called. Although link tuning
637  * sounds like a good idea, and usually works well for the other drivers,
638  * it does _not_ work with rt2500usb. Enabling this function will result
639  * in TX capabilities only until association kicks in. Immediately
640  * after the successful association all TX frames will be kept in the
641  * hardware queue and never transmitted.
642  */
643 #if 0
644 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
645 {
646         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
647         u16 bbp_thresh;
648         u16 vgc_bound;
649         u16 sens;
650         u16 r24;
651         u16 r25;
652         u16 r61;
653         u16 r17_sens;
654         u8 r17;
655         u8 up_bound;
656         u8 low_bound;
657
658         /*
659          * Read current r17 value, as well as the sensitivity values
660          * for the r17 register.
661          */
662         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
663         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
664
665         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
666         up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
667         low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
668
669         /*
670          * If we are not associated, we should go straight to the
671          * dynamic CCA tuning.
672          */
673         if (!rt2x00dev->intf_associated)
674                 goto dynamic_cca_tune;
675
676         /*
677          * Determine the BBP tuning threshold and correctly
678          * set BBP 24, 25 and 61.
679          */
680         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
681         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
682
683         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
684         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
685         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
686
687         if ((rssi + bbp_thresh) > 0) {
688                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
689                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
690                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
691         } else {
692                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
693                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
694                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
695         }
696
697         rt2500usb_bbp_write(rt2x00dev, 24, r24);
698         rt2500usb_bbp_write(rt2x00dev, 25, r25);
699         rt2500usb_bbp_write(rt2x00dev, 61, r61);
700
701         /*
702          * A too low RSSI will cause too much false CCA which will
703          * then corrupt the R17 tuning. To remidy this the tuning should
704          * be stopped (While making sure the R17 value will not exceed limits)
705          */
706         if (rssi >= -40) {
707                 if (r17 != 0x60)
708                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
709                 return;
710         }
711
712         /*
713          * Special big-R17 for short distance
714          */
715         if (rssi >= -58) {
716                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
717                 if (r17 != sens)
718                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
719                 return;
720         }
721
722         /*
723          * Special mid-R17 for middle distance
724          */
725         if (rssi >= -74) {
726                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
727                 if (r17 != sens)
728                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
729                 return;
730         }
731
732         /*
733          * Leave short or middle distance condition, restore r17
734          * to the dynamic tuning range.
735          */
736         low_bound = 0x32;
737         if (rssi < -77)
738                 up_bound -= (-77 - rssi);
739
740         if (up_bound < low_bound)
741                 up_bound = low_bound;
742
743         if (r17 > up_bound) {
744                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
745                 rt2x00dev->link.vgc_level = up_bound;
746                 return;
747         }
748
749 dynamic_cca_tune:
750
751         /*
752          * R17 is inside the dynamic tuning range,
753          * start tuning the link based on the false cca counter.
754          */
755         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
756                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
757                 rt2x00dev->link.vgc_level = r17;
758         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
759                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
760                 rt2x00dev->link.vgc_level = r17;
761         }
762 }
763 #else
764 #define rt2500usb_link_tuner    NULL
765 #endif
766
767 /*
768  * Initialization functions.
769  */
770 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
771 {
772         u16 reg;
773
774         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
775                                     USB_MODE_TEST, REGISTER_TIMEOUT);
776         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
777                                     0x00f0, REGISTER_TIMEOUT);
778
779         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
780         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
781         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
782
783         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
784         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
785
786         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
787         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
788         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
789         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
790         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
791
792         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
793         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
794         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
795         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
796         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
797
798         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
799         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
800         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
801         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
802         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
803         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
804
805         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
806         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
807         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
808         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
809         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
810         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
811
812         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
813         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
814         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
815         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
816         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
817         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
818
819         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
820         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
821         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
822         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
823         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
824         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
825
826         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
827         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
828         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 0);
829         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
830         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
831         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
832
833         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
834         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
835
836         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
837                 return -EBUSY;
838
839         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
840         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
841         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
842         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
843         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
844
845         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
846                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
847                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
848         } else {
849                 reg = 0;
850                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
851                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
852         }
853         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
854
855         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
856         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
857         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
858         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
859
860         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
861         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
862                            rt2x00dev->rx->data_size);
863         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
864
865         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
866         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
867         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
868         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
869
870         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
871         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
872         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
873
874         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
875         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
876         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
877
878         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
879         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
880         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
881
882         return 0;
883 }
884
885 static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
886 {
887         unsigned int i;
888         u8 value;
889
890         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
891                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
892                 if ((value != 0xff) && (value != 0x00))
893                         return 0;
894                 udelay(REGISTER_BUSY_DELAY);
895         }
896
897         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
898         return -EACCES;
899 }
900
901 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
902 {
903         unsigned int i;
904         u16 eeprom;
905         u8 value;
906         u8 reg_id;
907
908         if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
909                 return -EACCES;
910
911         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
912         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
913         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
914         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
915         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
916         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
917         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
918         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
919         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
920         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
921         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
922         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
923         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
924         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
925         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
926         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
927         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
928         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
929         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
930         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
931         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
932         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
933         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
934         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
935         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
936         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
937         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
938         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
939         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
940         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
941         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
942
943         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
944                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
945
946                 if (eeprom != 0xffff && eeprom != 0x0000) {
947                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
948                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
949                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
950                 }
951         }
952
953         return 0;
954 }
955
956 /*
957  * Device state switch handlers.
958  */
959 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
960                                 enum dev_state state)
961 {
962         u16 reg;
963
964         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
965         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
966                            (state == STATE_RADIO_RX_OFF) ||
967                            (state == STATE_RADIO_RX_OFF_LINK));
968         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
969 }
970
971 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
972 {
973         /*
974          * Initialize all registers.
975          */
976         if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
977                      rt2500usb_init_bbp(rt2x00dev)))
978                 return -EIO;
979
980         return 0;
981 }
982
983 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
984 {
985         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
986         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
987
988         /*
989          * Disable synchronisation.
990          */
991         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
992
993         rt2x00usb_disable_radio(rt2x00dev);
994 }
995
996 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
997                                enum dev_state state)
998 {
999         u16 reg;
1000         u16 reg2;
1001         unsigned int i;
1002         char put_to_sleep;
1003         char bbp_state;
1004         char rf_state;
1005
1006         put_to_sleep = (state != STATE_AWAKE);
1007
1008         reg = 0;
1009         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
1010         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
1011         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
1012         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1013         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
1014         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1015
1016         /*
1017          * Device is not guaranteed to be in the requested state yet.
1018          * We must wait until the register indicates that the
1019          * device has entered the correct state.
1020          */
1021         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1022                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
1023                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
1024                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
1025                 if (bbp_state == state && rf_state == state)
1026                         return 0;
1027                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1028                 msleep(30);
1029         }
1030
1031         return -EBUSY;
1032 }
1033
1034 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1035                                       enum dev_state state)
1036 {
1037         int retval = 0;
1038
1039         switch (state) {
1040         case STATE_RADIO_ON:
1041                 retval = rt2500usb_enable_radio(rt2x00dev);
1042                 break;
1043         case STATE_RADIO_OFF:
1044                 rt2500usb_disable_radio(rt2x00dev);
1045                 break;
1046         case STATE_RADIO_RX_ON:
1047         case STATE_RADIO_RX_ON_LINK:
1048         case STATE_RADIO_RX_OFF:
1049         case STATE_RADIO_RX_OFF_LINK:
1050                 rt2500usb_toggle_rx(rt2x00dev, state);
1051                 break;
1052         case STATE_RADIO_IRQ_ON:
1053         case STATE_RADIO_IRQ_OFF:
1054                 /* No support, but no error either */
1055                 break;
1056         case STATE_DEEP_SLEEP:
1057         case STATE_SLEEP:
1058         case STATE_STANDBY:
1059         case STATE_AWAKE:
1060                 retval = rt2500usb_set_state(rt2x00dev, state);
1061                 break;
1062         default:
1063                 retval = -ENOTSUPP;
1064                 break;
1065         }
1066
1067         if (unlikely(retval))
1068                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1069                       state, retval);
1070
1071         return retval;
1072 }
1073
1074 /*
1075  * TX descriptor initialization
1076  */
1077 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1078                                     struct sk_buff *skb,
1079                                     struct txentry_desc *txdesc)
1080 {
1081         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1082         __le32 *txd = skbdesc->desc;
1083         u32 word;
1084
1085         /*
1086          * Start writing the descriptor words.
1087          */
1088         rt2x00_desc_read(txd, 1, &word);
1089         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1090         rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1091         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1092         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1093         rt2x00_desc_write(txd, 1, word);
1094
1095         rt2x00_desc_read(txd, 2, &word);
1096         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1097         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1098         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1099         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1100         rt2x00_desc_write(txd, 2, word);
1101
1102         rt2x00_desc_read(txd, 0, &word);
1103         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1104         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1105                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1106         rt2x00_set_field32(&word, TXD_W0_ACK,
1107                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1108         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1109                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1110         rt2x00_set_field32(&word, TXD_W0_OFDM,
1111                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1112         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1113                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1114         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1115         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skb->len);
1116         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1117         rt2x00_desc_write(txd, 0, word);
1118 }
1119
1120 /*
1121  * TX data initialization
1122  */
1123 static void rt2500usb_beacondone(struct urb *urb);
1124
1125 static void rt2500usb_write_beacon(struct queue_entry *entry)
1126 {
1127         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1128         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
1129         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1130         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1131         int pipe = usb_sndbulkpipe(usb_dev, 1);
1132         int length;
1133         u16 reg;
1134
1135         /*
1136          * Add the descriptor in front of the skb.
1137          */
1138         skb_push(entry->skb, entry->queue->desc_size);
1139         memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len);
1140         skbdesc->desc = entry->skb->data;
1141
1142         /*
1143          * Disable beaconing while we are reloading the beacon data,
1144          * otherwise we might be sending out invalid data.
1145          */
1146         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1147         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
1148         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
1149         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1150         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1151
1152         /*
1153          * USB devices cannot blindly pass the skb->len as the
1154          * length of the data to usb_fill_bulk_urb. Pass the skb
1155          * to the driver to determine what the length should be.
1156          */
1157         length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb);
1158
1159         usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
1160                           entry->skb->data, length, rt2500usb_beacondone,
1161                           entry);
1162
1163         /*
1164          * Second we need to create the guardian byte.
1165          * We only need a single byte, so lets recycle
1166          * the 'flags' field we are not using for beacons.
1167          */
1168         bcn_priv->guardian_data = 0;
1169         usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
1170                           &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
1171                           entry);
1172
1173         /*
1174          * Send out the guardian byte.
1175          */
1176         usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
1177 }
1178
1179 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1180                                      struct sk_buff *skb)
1181 {
1182         int length;
1183
1184         /*
1185          * The length _must_ be a multiple of 2,
1186          * but it must _not_ be a multiple of the USB packet size.
1187          */
1188         length = roundup(skb->len, 2);
1189         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1190
1191         return length;
1192 }
1193
1194 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1195                                     const enum data_queue_qid queue)
1196 {
1197         u16 reg;
1198
1199         if (queue != QID_BEACON) {
1200                 rt2x00usb_kick_tx_queue(rt2x00dev, queue);
1201                 return;
1202         }
1203
1204         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1205         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1206                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1207                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1208                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1209                 /*
1210                  * Beacon generation will fail initially.
1211                  * To prevent this we need to register the TXRX_CSR19
1212                  * register several times.
1213                  */
1214                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1215                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1216                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1217                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1218                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1219         }
1220 }
1221
1222 /*
1223  * RX control handlers
1224  */
1225 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1226                                   struct rxdone_entry_desc *rxdesc)
1227 {
1228         struct queue_entry_priv_usb *entry_priv = entry->priv_data;
1229         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1230         __le32 *rxd =
1231             (__le32 *)(entry->skb->data +
1232                        (entry_priv->urb->actual_length -
1233                         entry->queue->desc_size));
1234         u32 word0;
1235         u32 word1;
1236
1237         /*
1238          * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1239          * frame data in rt2x00usb.
1240          */
1241         memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1242         rxd = (__le32 *)skbdesc->desc;
1243
1244         /*
1245          * It is now safe to read the descriptor on all architectures.
1246          */
1247         rt2x00_desc_read(rxd, 0, &word0);
1248         rt2x00_desc_read(rxd, 1, &word1);
1249
1250         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1251                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1252         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1253                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1254
1255         /*
1256          * Obtain the status about this packet.
1257          * When frame was received with an OFDM bitrate,
1258          * the signal is the PLCP value. If it was received with
1259          * a CCK bitrate the signal is the rate in 100kbit/s.
1260          */
1261         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1262         rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1263             entry->queue->rt2x00dev->rssi_offset;
1264         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1265
1266         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1267                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1268         else
1269                 rxdesc->dev_flags |= RXDONE_SIGNAL_BITRATE;
1270         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1271                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1272
1273         /*
1274          * Adjust the skb memory window to the frame boundaries.
1275          */
1276         skb_trim(entry->skb, rxdesc->size);
1277 }
1278
1279 /*
1280  * Interrupt functions.
1281  */
1282 static void rt2500usb_beacondone(struct urb *urb)
1283 {
1284         struct queue_entry *entry = (struct queue_entry *)urb->context;
1285         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1286
1287         if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1288                 return;
1289
1290         /*
1291          * Check if this was the guardian beacon,
1292          * if that was the case we need to send the real beacon now.
1293          * Otherwise we should free the sk_buffer, the device
1294          * should be doing the rest of the work now.
1295          */
1296         if (bcn_priv->guardian_urb == urb) {
1297                 usb_submit_urb(bcn_priv->urb, GFP_ATOMIC);
1298         } else if (bcn_priv->urb == urb) {
1299                 dev_kfree_skb(entry->skb);
1300                 entry->skb = NULL;
1301         }
1302 }
1303
1304 /*
1305  * Device probe functions.
1306  */
1307 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1308 {
1309         u16 word;
1310         u8 *mac;
1311         u8 bbp;
1312
1313         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1314
1315         /*
1316          * Start validation of the data that has been read.
1317          */
1318         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1319         if (!is_valid_ether_addr(mac)) {
1320                 random_ether_addr(mac);
1321                 EEPROM(rt2x00dev, "MAC: %pM\n", mac);
1322         }
1323
1324         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1325         if (word == 0xffff) {
1326                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1327                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1328                                    ANTENNA_SW_DIVERSITY);
1329                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1330                                    ANTENNA_SW_DIVERSITY);
1331                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1332                                    LED_MODE_DEFAULT);
1333                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1334                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1335                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1336                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1337                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1338         }
1339
1340         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1341         if (word == 0xffff) {
1342                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1343                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1344                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1345                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1346                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1347         }
1348
1349         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1350         if (word == 0xffff) {
1351                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1352                                    DEFAULT_RSSI_OFFSET);
1353                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1354                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1355         }
1356
1357         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1358         if (word == 0xffff) {
1359                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1360                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1361                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1362         }
1363
1364         /*
1365          * Switch lower vgc bound to current BBP R17 value,
1366          * lower the value a bit for better quality.
1367          */
1368         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1369         bbp -= 6;
1370
1371         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1372         if (word == 0xffff) {
1373                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1374                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1375                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1376                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1377         } else {
1378                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1379                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1380         }
1381
1382         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1383         if (word == 0xffff) {
1384                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1385                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1386                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1387                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1388         }
1389
1390         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1391         if (word == 0xffff) {
1392                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1393                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1394                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1395                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1396         }
1397
1398         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1399         if (word == 0xffff) {
1400                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1401                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1402                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1403                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1404         }
1405
1406         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1407         if (word == 0xffff) {
1408                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1409                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1410                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1411                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1412         }
1413
1414         return 0;
1415 }
1416
1417 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1418 {
1419         u16 reg;
1420         u16 value;
1421         u16 eeprom;
1422
1423         /*
1424          * Read EEPROM word for configuration.
1425          */
1426         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1427
1428         /*
1429          * Identify RF chipset.
1430          */
1431         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1432         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1433         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1434
1435         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1436                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1437                 return -ENODEV;
1438         }
1439
1440         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1441             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1442             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1443             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1444             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1445             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1446                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1447                 return -ENODEV;
1448         }
1449
1450         /*
1451          * Identify default antenna configuration.
1452          */
1453         rt2x00dev->default_ant.tx =
1454             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1455         rt2x00dev->default_ant.rx =
1456             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1457
1458         /*
1459          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1460          * I am not 100% sure about this, but the legacy drivers do not
1461          * indicate antenna swapping in software is required when
1462          * diversity is enabled.
1463          */
1464         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1465                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1466         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1467                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1468
1469         /*
1470          * Store led mode, for correct led behaviour.
1471          */
1472 #ifdef CONFIG_RT2X00_LIB_LEDS
1473         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1474
1475         rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1476         if (value == LED_MODE_TXRX_ACTIVITY)
1477                 rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1478                                    LED_TYPE_ACTIVITY);
1479 #endif /* CONFIG_RT2X00_LIB_LEDS */
1480
1481         /*
1482          * Check if the BBP tuning should be disabled.
1483          */
1484         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1485         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1486                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1487
1488         /*
1489          * Read the RSSI <-> dBm offset information.
1490          */
1491         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1492         rt2x00dev->rssi_offset =
1493             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1494
1495         return 0;
1496 }
1497
1498 /*
1499  * RF value list for RF2522
1500  * Supports: 2.4 GHz
1501  */
1502 static const struct rf_channel rf_vals_bg_2522[] = {
1503         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1504         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1505         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1506         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1507         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1508         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1509         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1510         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1511         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1512         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1513         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1514         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1515         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1516         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1517 };
1518
1519 /*
1520  * RF value list for RF2523
1521  * Supports: 2.4 GHz
1522  */
1523 static const struct rf_channel rf_vals_bg_2523[] = {
1524         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1525         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1526         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1527         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1528         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1529         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1530         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1531         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1532         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1533         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1534         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1535         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1536         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1537         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1538 };
1539
1540 /*
1541  * RF value list for RF2524
1542  * Supports: 2.4 GHz
1543  */
1544 static const struct rf_channel rf_vals_bg_2524[] = {
1545         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1546         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1547         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1548         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1549         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1550         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1551         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1552         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1553         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1554         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1555         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1556         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1557         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1558         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1559 };
1560
1561 /*
1562  * RF value list for RF2525
1563  * Supports: 2.4 GHz
1564  */
1565 static const struct rf_channel rf_vals_bg_2525[] = {
1566         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1567         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1568         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1569         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1570         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1571         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1572         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1573         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1574         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1575         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1576         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1577         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1578         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1579         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1580 };
1581
1582 /*
1583  * RF value list for RF2525e
1584  * Supports: 2.4 GHz
1585  */
1586 static const struct rf_channel rf_vals_bg_2525e[] = {
1587         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1588         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1589         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1590         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1591         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1592         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1593         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1594         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1595         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1596         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1597         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1598         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1599         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1600         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1601 };
1602
1603 /*
1604  * RF value list for RF5222
1605  * Supports: 2.4 GHz & 5.2 GHz
1606  */
1607 static const struct rf_channel rf_vals_5222[] = {
1608         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1609         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1610         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1611         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1612         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1613         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1614         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1615         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1616         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1617         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1618         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1619         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1620         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1621         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1622
1623         /* 802.11 UNI / HyperLan 2 */
1624         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1625         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1626         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1627         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1628         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1629         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1630         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1631         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1632
1633         /* 802.11 HyperLan 2 */
1634         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1635         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1636         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1637         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1638         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1639         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1640         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1641         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1642         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1643         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1644
1645         /* 802.11 UNII */
1646         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1647         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1648         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1649         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1650         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1651 };
1652
1653 static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1654 {
1655         struct hw_mode_spec *spec = &rt2x00dev->spec;
1656         struct channel_info *info;
1657         char *tx_power;
1658         unsigned int i;
1659
1660         /*
1661          * Initialize all hw fields.
1662          */
1663         rt2x00dev->hw->flags =
1664             IEEE80211_HW_RX_INCLUDES_FCS |
1665             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1666             IEEE80211_HW_SIGNAL_DBM;
1667
1668         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1669
1670         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1671         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1672                                 rt2x00_eeprom_addr(rt2x00dev,
1673                                                    EEPROM_MAC_ADDR_0));
1674
1675         /*
1676          * Initialize hw_mode information.
1677          */
1678         spec->supported_bands = SUPPORT_BAND_2GHZ;
1679         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1680
1681         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1682                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1683                 spec->channels = rf_vals_bg_2522;
1684         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1685                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1686                 spec->channels = rf_vals_bg_2523;
1687         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1688                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1689                 spec->channels = rf_vals_bg_2524;
1690         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1691                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1692                 spec->channels = rf_vals_bg_2525;
1693         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1694                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1695                 spec->channels = rf_vals_bg_2525e;
1696         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1697                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1698                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1699                 spec->channels = rf_vals_5222;
1700         }
1701
1702         /*
1703          * Create channel information array
1704          */
1705         info = kzalloc(spec->num_channels * sizeof(*info), GFP_KERNEL);
1706         if (!info)
1707                 return -ENOMEM;
1708
1709         spec->channels_info = info;
1710
1711         tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1712         for (i = 0; i < 14; i++)
1713                 info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
1714
1715         if (spec->num_channels > 14) {
1716                 for (i = 14; i < spec->num_channels; i++)
1717                         info[i].tx_power1 = DEFAULT_TXPOWER;
1718         }
1719
1720         return 0;
1721 }
1722
1723 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1724 {
1725         int retval;
1726
1727         /*
1728          * Allocate eeprom data.
1729          */
1730         retval = rt2500usb_validate_eeprom(rt2x00dev);
1731         if (retval)
1732                 return retval;
1733
1734         retval = rt2500usb_init_eeprom(rt2x00dev);
1735         if (retval)
1736                 return retval;
1737
1738         /*
1739          * Initialize hw specifications.
1740          */
1741         retval = rt2500usb_probe_hw_mode(rt2x00dev);
1742         if (retval)
1743                 return retval;
1744
1745         /*
1746          * This device requires the atim queue
1747          */
1748         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1749         __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1750         __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
1751         __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1752
1753         /*
1754          * Set the rssi offset.
1755          */
1756         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1757
1758         return 0;
1759 }
1760
1761 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1762         .tx                     = rt2x00mac_tx,
1763         .start                  = rt2x00mac_start,
1764         .stop                   = rt2x00mac_stop,
1765         .add_interface          = rt2x00mac_add_interface,
1766         .remove_interface       = rt2x00mac_remove_interface,
1767         .config                 = rt2x00mac_config,
1768         .config_interface       = rt2x00mac_config_interface,
1769         .configure_filter       = rt2x00mac_configure_filter,
1770         .get_stats              = rt2x00mac_get_stats,
1771         .bss_info_changed       = rt2x00mac_bss_info_changed,
1772         .conf_tx                = rt2x00mac_conf_tx,
1773         .get_tx_stats           = rt2x00mac_get_tx_stats,
1774 };
1775
1776 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1777         .probe_hw               = rt2500usb_probe_hw,
1778         .initialize             = rt2x00usb_initialize,
1779         .uninitialize           = rt2x00usb_uninitialize,
1780         .clear_entry            = rt2x00usb_clear_entry,
1781         .set_device_state       = rt2500usb_set_device_state,
1782         .link_stats             = rt2500usb_link_stats,
1783         .reset_tuner            = rt2500usb_reset_tuner,
1784         .link_tuner             = rt2500usb_link_tuner,
1785         .write_tx_desc          = rt2500usb_write_tx_desc,
1786         .write_tx_data          = rt2x00usb_write_tx_data,
1787         .write_beacon           = rt2500usb_write_beacon,
1788         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1789         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1790         .fill_rxdone            = rt2500usb_fill_rxdone,
1791         .config_filter          = rt2500usb_config_filter,
1792         .config_intf            = rt2500usb_config_intf,
1793         .config_erp             = rt2500usb_config_erp,
1794         .config_ant             = rt2500usb_config_ant,
1795         .config                 = rt2500usb_config,
1796 };
1797
1798 static const struct data_queue_desc rt2500usb_queue_rx = {
1799         .entry_num              = RX_ENTRIES,
1800         .data_size              = DATA_FRAME_SIZE,
1801         .desc_size              = RXD_DESC_SIZE,
1802         .priv_size              = sizeof(struct queue_entry_priv_usb),
1803 };
1804
1805 static const struct data_queue_desc rt2500usb_queue_tx = {
1806         .entry_num              = TX_ENTRIES,
1807         .data_size              = DATA_FRAME_SIZE,
1808         .desc_size              = TXD_DESC_SIZE,
1809         .priv_size              = sizeof(struct queue_entry_priv_usb),
1810 };
1811
1812 static const struct data_queue_desc rt2500usb_queue_bcn = {
1813         .entry_num              = BEACON_ENTRIES,
1814         .data_size              = MGMT_FRAME_SIZE,
1815         .desc_size              = TXD_DESC_SIZE,
1816         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1817 };
1818
1819 static const struct data_queue_desc rt2500usb_queue_atim = {
1820         .entry_num              = ATIM_ENTRIES,
1821         .data_size              = DATA_FRAME_SIZE,
1822         .desc_size              = TXD_DESC_SIZE,
1823         .priv_size              = sizeof(struct queue_entry_priv_usb),
1824 };
1825
1826 static const struct rt2x00_ops rt2500usb_ops = {
1827         .name           = KBUILD_MODNAME,
1828         .max_sta_intf   = 1,
1829         .max_ap_intf    = 1,
1830         .eeprom_size    = EEPROM_SIZE,
1831         .rf_size        = RF_SIZE,
1832         .tx_queues      = NUM_TX_QUEUES,
1833         .rx             = &rt2500usb_queue_rx,
1834         .tx             = &rt2500usb_queue_tx,
1835         .bcn            = &rt2500usb_queue_bcn,
1836         .atim           = &rt2500usb_queue_atim,
1837         .lib            = &rt2500usb_rt2x00_ops,
1838         .hw             = &rt2500usb_mac80211_ops,
1839 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1840         .debugfs        = &rt2500usb_rt2x00debug,
1841 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1842 };
1843
1844 /*
1845  * rt2500usb module information.
1846  */
1847 static struct usb_device_id rt2500usb_device_table[] = {
1848         /* ASUS */
1849         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1850         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1851         /* Belkin */
1852         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1853         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1854         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1855         /* Cisco Systems */
1856         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1857         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1858         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1859         /* Conceptronic */
1860         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1861         /* D-LINK */
1862         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1863         /* Gigabyte */
1864         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1865         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1866         /* Hercules */
1867         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1868         /* Melco */
1869         { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
1870         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1871         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1872         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1873         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1874         /* MSI */
1875         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1876         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1877         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1878         /* Ralink */
1879         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1880         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1881         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1882         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1883         /* Siemens */
1884         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1885         /* SMC */
1886         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1887         /* Spairon */
1888         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1889         /* Trust */
1890         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1891         /* Zinwell */
1892         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1893         { 0, }
1894 };
1895
1896 MODULE_AUTHOR(DRV_PROJECT);
1897 MODULE_VERSION(DRV_VERSION);
1898 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1899 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1900 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1901 MODULE_LICENSE("GPL");
1902
1903 static struct usb_driver rt2500usb_driver = {
1904         .name           = KBUILD_MODNAME,
1905         .id_table       = rt2500usb_device_table,
1906         .probe          = rt2x00usb_probe,
1907         .disconnect     = rt2x00usb_disconnect,
1908         .suspend        = rt2x00usb_suspend,
1909         .resume         = rt2x00usb_resume,
1910 };
1911
1912 static int __init rt2500usb_init(void)
1913 {
1914         return usb_register(&rt2500usb_driver);
1915 }
1916
1917 static void __exit rt2500usb_exit(void)
1918 {
1919         usb_deregister(&rt2500usb_driver);
1920 }
1921
1922 module_init(rt2500usb_init);
1923 module_exit(rt2500usb_exit);