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mac80211: allow configure_filter callback to sleep
[deliverable/linux.git] / drivers / net / wireless / b43legacy / main.c
1 /*
2 *
3 * Broadcom B43legacy wireless driver
4 *
5 * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 * Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it>
7 * Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
8 * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10 * Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
11 *
12 * Some parts of the code in this file are derived from the ipw2200
13 * driver Copyright(c) 2003 - 2004 Intel Corporation.
14
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; see the file COPYING. If not, write to
27 * the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
28 * Boston, MA 02110-1301, USA.
29 *
30 */
31
32 #include <linux/delay.h>
33 #include <linux/init.h>
34 #include <linux/moduleparam.h>
35 #include <linux/if_arp.h>
36 #include <linux/etherdevice.h>
37 #include <linux/firmware.h>
38 #include <linux/wireless.h>
39 #include <linux/workqueue.h>
40 #include <linux/skbuff.h>
41 #include <linux/dma-mapping.h>
42 #include <net/dst.h>
43 #include <asm/unaligned.h>
44
45 #include "b43legacy.h"
46 #include "main.h"
47 #include "debugfs.h"
48 #include "phy.h"
49 #include "dma.h"
50 #include "pio.h"
51 #include "sysfs.h"
52 #include "xmit.h"
53 #include "radio.h"
54
55
56 MODULE_DESCRIPTION("Broadcom B43legacy wireless driver");
57 MODULE_AUTHOR("Martin Langer");
58 MODULE_AUTHOR("Stefano Brivio");
59 MODULE_AUTHOR("Michael Buesch");
60 MODULE_LICENSE("GPL");
61
62 MODULE_FIRMWARE(B43legacy_SUPPORTED_FIRMWARE_ID);
63
64 #if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
65 static int modparam_pio;
66 module_param_named(pio, modparam_pio, int, 0444);
67 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
68 #elif defined(CONFIG_B43LEGACY_DMA)
69 # define modparam_pio 0
70 #elif defined(CONFIG_B43LEGACY_PIO)
71 # define modparam_pio 1
72 #endif
73
74 static int modparam_bad_frames_preempt;
75 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
76 MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames"
77 " Preemption");
78
79 static char modparam_fwpostfix[16];
80 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
81 MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load.");
82
83 /* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */
84 static const struct ssb_device_id b43legacy_ssb_tbl[] = {
85 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2),
86 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4),
87 SSB_DEVTABLE_END
88 };
89 MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl);
90
91
92 /* Channel and ratetables are shared for all devices.
93 * They can't be const, because ieee80211 puts some precalculated
94 * data in there. This data is the same for all devices, so we don't
95 * get concurrency issues */
96 #define RATETAB_ENT(_rateid, _flags) \
97 { \
98 .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \
99 .hw_value = (_rateid), \
100 .flags = (_flags), \
101 }
102 /*
103 * NOTE: When changing this, sync with xmit.c's
104 * b43legacy_plcp_get_bitrate_idx_* functions!
105 */
106 static struct ieee80211_rate __b43legacy_ratetable[] = {
107 RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0),
108 RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
109 RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
110 RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
111 RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0),
112 RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0),
113 RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0),
114 RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0),
115 RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0),
116 RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0),
117 RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0),
118 RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0),
119 };
120 #define b43legacy_b_ratetable (__b43legacy_ratetable + 0)
121 #define b43legacy_b_ratetable_size 4
122 #define b43legacy_g_ratetable (__b43legacy_ratetable + 0)
123 #define b43legacy_g_ratetable_size 12
124
125 #define CHANTAB_ENT(_chanid, _freq) \
126 { \
127 .center_freq = (_freq), \
128 .hw_value = (_chanid), \
129 }
130 static struct ieee80211_channel b43legacy_bg_chantable[] = {
131 CHANTAB_ENT(1, 2412),
132 CHANTAB_ENT(2, 2417),
133 CHANTAB_ENT(3, 2422),
134 CHANTAB_ENT(4, 2427),
135 CHANTAB_ENT(5, 2432),
136 CHANTAB_ENT(6, 2437),
137 CHANTAB_ENT(7, 2442),
138 CHANTAB_ENT(8, 2447),
139 CHANTAB_ENT(9, 2452),
140 CHANTAB_ENT(10, 2457),
141 CHANTAB_ENT(11, 2462),
142 CHANTAB_ENT(12, 2467),
143 CHANTAB_ENT(13, 2472),
144 CHANTAB_ENT(14, 2484),
145 };
146
147 static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = {
148 .channels = b43legacy_bg_chantable,
149 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
150 .bitrates = b43legacy_b_ratetable,
151 .n_bitrates = b43legacy_b_ratetable_size,
152 };
153
154 static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = {
155 .channels = b43legacy_bg_chantable,
156 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
157 .bitrates = b43legacy_g_ratetable,
158 .n_bitrates = b43legacy_g_ratetable_size,
159 };
160
161 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev);
162 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev);
163 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev);
164 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev);
165
166
167 static int b43legacy_ratelimit(struct b43legacy_wl *wl)
168 {
169 if (!wl || !wl->current_dev)
170 return 1;
171 if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED)
172 return 1;
173 /* We are up and running.
174 * Ratelimit the messages to avoid DoS over the net. */
175 return net_ratelimit();
176 }
177
178 void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...)
179 {
180 va_list args;
181
182 if (!b43legacy_ratelimit(wl))
183 return;
184 va_start(args, fmt);
185 printk(KERN_INFO "b43legacy-%s: ",
186 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
187 vprintk(fmt, args);
188 va_end(args);
189 }
190
191 void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...)
192 {
193 va_list args;
194
195 if (!b43legacy_ratelimit(wl))
196 return;
197 va_start(args, fmt);
198 printk(KERN_ERR "b43legacy-%s ERROR: ",
199 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
200 vprintk(fmt, args);
201 va_end(args);
202 }
203
204 void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...)
205 {
206 va_list args;
207
208 if (!b43legacy_ratelimit(wl))
209 return;
210 va_start(args, fmt);
211 printk(KERN_WARNING "b43legacy-%s warning: ",
212 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
213 vprintk(fmt, args);
214 va_end(args);
215 }
216
217 #if B43legacy_DEBUG
218 void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...)
219 {
220 va_list args;
221
222 va_start(args, fmt);
223 printk(KERN_DEBUG "b43legacy-%s debug: ",
224 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
225 vprintk(fmt, args);
226 va_end(args);
227 }
228 #endif /* DEBUG */
229
230 static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset,
231 u32 val)
232 {
233 u32 status;
234
235 B43legacy_WARN_ON(offset % 4 != 0);
236
237 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
238 if (status & B43legacy_MACCTL_BE)
239 val = swab32(val);
240
241 b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset);
242 mmiowb();
243 b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val);
244 }
245
246 static inline
247 void b43legacy_shm_control_word(struct b43legacy_wldev *dev,
248 u16 routing, u16 offset)
249 {
250 u32 control;
251
252 /* "offset" is the WORD offset. */
253
254 control = routing;
255 control <<= 16;
256 control |= offset;
257 b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control);
258 }
259
260 u32 b43legacy_shm_read32(struct b43legacy_wldev *dev,
261 u16 routing, u16 offset)
262 {
263 u32 ret;
264
265 if (routing == B43legacy_SHM_SHARED) {
266 B43legacy_WARN_ON((offset & 0x0001) != 0);
267 if (offset & 0x0003) {
268 /* Unaligned access */
269 b43legacy_shm_control_word(dev, routing, offset >> 2);
270 ret = b43legacy_read16(dev,
271 B43legacy_MMIO_SHM_DATA_UNALIGNED);
272 ret <<= 16;
273 b43legacy_shm_control_word(dev, routing,
274 (offset >> 2) + 1);
275 ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
276
277 return ret;
278 }
279 offset >>= 2;
280 }
281 b43legacy_shm_control_word(dev, routing, offset);
282 ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA);
283
284 return ret;
285 }
286
287 u16 b43legacy_shm_read16(struct b43legacy_wldev *dev,
288 u16 routing, u16 offset)
289 {
290 u16 ret;
291
292 if (routing == B43legacy_SHM_SHARED) {
293 B43legacy_WARN_ON((offset & 0x0001) != 0);
294 if (offset & 0x0003) {
295 /* Unaligned access */
296 b43legacy_shm_control_word(dev, routing, offset >> 2);
297 ret = b43legacy_read16(dev,
298 B43legacy_MMIO_SHM_DATA_UNALIGNED);
299
300 return ret;
301 }
302 offset >>= 2;
303 }
304 b43legacy_shm_control_word(dev, routing, offset);
305 ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
306
307 return ret;
308 }
309
310 void b43legacy_shm_write32(struct b43legacy_wldev *dev,
311 u16 routing, u16 offset,
312 u32 value)
313 {
314 if (routing == B43legacy_SHM_SHARED) {
315 B43legacy_WARN_ON((offset & 0x0001) != 0);
316 if (offset & 0x0003) {
317 /* Unaligned access */
318 b43legacy_shm_control_word(dev, routing, offset >> 2);
319 mmiowb();
320 b43legacy_write16(dev,
321 B43legacy_MMIO_SHM_DATA_UNALIGNED,
322 (value >> 16) & 0xffff);
323 mmiowb();
324 b43legacy_shm_control_word(dev, routing,
325 (offset >> 2) + 1);
326 mmiowb();
327 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA,
328 value & 0xffff);
329 return;
330 }
331 offset >>= 2;
332 }
333 b43legacy_shm_control_word(dev, routing, offset);
334 mmiowb();
335 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value);
336 }
337
338 void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset,
339 u16 value)
340 {
341 if (routing == B43legacy_SHM_SHARED) {
342 B43legacy_WARN_ON((offset & 0x0001) != 0);
343 if (offset & 0x0003) {
344 /* Unaligned access */
345 b43legacy_shm_control_word(dev, routing, offset >> 2);
346 mmiowb();
347 b43legacy_write16(dev,
348 B43legacy_MMIO_SHM_DATA_UNALIGNED,
349 value);
350 return;
351 }
352 offset >>= 2;
353 }
354 b43legacy_shm_control_word(dev, routing, offset);
355 mmiowb();
356 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value);
357 }
358
359 /* Read HostFlags */
360 u32 b43legacy_hf_read(struct b43legacy_wldev *dev)
361 {
362 u32 ret;
363
364 ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
365 B43legacy_SHM_SH_HOSTFHI);
366 ret <<= 16;
367 ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
368 B43legacy_SHM_SH_HOSTFLO);
369
370 return ret;
371 }
372
373 /* Write HostFlags */
374 void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value)
375 {
376 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
377 B43legacy_SHM_SH_HOSTFLO,
378 (value & 0x0000FFFF));
379 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
380 B43legacy_SHM_SH_HOSTFHI,
381 ((value & 0xFFFF0000) >> 16));
382 }
383
384 void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf)
385 {
386 /* We need to be careful. As we read the TSF from multiple
387 * registers, we should take care of register overflows.
388 * In theory, the whole tsf read process should be atomic.
389 * We try to be atomic here, by restaring the read process,
390 * if any of the high registers changed (overflew).
391 */
392 if (dev->dev->id.revision >= 3) {
393 u32 low;
394 u32 high;
395 u32 high2;
396
397 do {
398 high = b43legacy_read32(dev,
399 B43legacy_MMIO_REV3PLUS_TSF_HIGH);
400 low = b43legacy_read32(dev,
401 B43legacy_MMIO_REV3PLUS_TSF_LOW);
402 high2 = b43legacy_read32(dev,
403 B43legacy_MMIO_REV3PLUS_TSF_HIGH);
404 } while (unlikely(high != high2));
405
406 *tsf = high;
407 *tsf <<= 32;
408 *tsf |= low;
409 } else {
410 u64 tmp;
411 u16 v0;
412 u16 v1;
413 u16 v2;
414 u16 v3;
415 u16 test1;
416 u16 test2;
417 u16 test3;
418
419 do {
420 v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
421 v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
422 v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
423 v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0);
424
425 test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
426 test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
427 test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
428 } while (v3 != test3 || v2 != test2 || v1 != test1);
429
430 *tsf = v3;
431 *tsf <<= 48;
432 tmp = v2;
433 tmp <<= 32;
434 *tsf |= tmp;
435 tmp = v1;
436 tmp <<= 16;
437 *tsf |= tmp;
438 *tsf |= v0;
439 }
440 }
441
442 static void b43legacy_time_lock(struct b43legacy_wldev *dev)
443 {
444 u32 status;
445
446 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
447 status |= B43legacy_MACCTL_TBTTHOLD;
448 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
449 mmiowb();
450 }
451
452 static void b43legacy_time_unlock(struct b43legacy_wldev *dev)
453 {
454 u32 status;
455
456 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
457 status &= ~B43legacy_MACCTL_TBTTHOLD;
458 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
459 }
460
461 static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf)
462 {
463 /* Be careful with the in-progress timer.
464 * First zero out the low register, so we have a full
465 * register-overflow duration to complete the operation.
466 */
467 if (dev->dev->id.revision >= 3) {
468 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
469 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
470
471 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0);
472 mmiowb();
473 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH,
474 hi);
475 mmiowb();
476 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW,
477 lo);
478 } else {
479 u16 v0 = (tsf & 0x000000000000FFFFULL);
480 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
481 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
482 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
483
484 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0);
485 mmiowb();
486 b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3);
487 mmiowb();
488 b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2);
489 mmiowb();
490 b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1);
491 mmiowb();
492 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0);
493 }
494 }
495
496 void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf)
497 {
498 b43legacy_time_lock(dev);
499 b43legacy_tsf_write_locked(dev, tsf);
500 b43legacy_time_unlock(dev);
501 }
502
503 static
504 void b43legacy_macfilter_set(struct b43legacy_wldev *dev,
505 u16 offset, const u8 *mac)
506 {
507 static const u8 zero_addr[ETH_ALEN] = { 0 };
508 u16 data;
509
510 if (!mac)
511 mac = zero_addr;
512
513 offset |= 0x0020;
514 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset);
515
516 data = mac[0];
517 data |= mac[1] << 8;
518 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
519 data = mac[2];
520 data |= mac[3] << 8;
521 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
522 data = mac[4];
523 data |= mac[5] << 8;
524 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
525 }
526
527 static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev)
528 {
529 static const u8 zero_addr[ETH_ALEN] = { 0 };
530 const u8 *mac = dev->wl->mac_addr;
531 const u8 *bssid = dev->wl->bssid;
532 u8 mac_bssid[ETH_ALEN * 2];
533 int i;
534 u32 tmp;
535
536 if (!bssid)
537 bssid = zero_addr;
538 if (!mac)
539 mac = zero_addr;
540
541 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid);
542
543 memcpy(mac_bssid, mac, ETH_ALEN);
544 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
545
546 /* Write our MAC address and BSSID to template ram */
547 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
548 tmp = (u32)(mac_bssid[i + 0]);
549 tmp |= (u32)(mac_bssid[i + 1]) << 8;
550 tmp |= (u32)(mac_bssid[i + 2]) << 16;
551 tmp |= (u32)(mac_bssid[i + 3]) << 24;
552 b43legacy_ram_write(dev, 0x20 + i, tmp);
553 b43legacy_ram_write(dev, 0x78 + i, tmp);
554 b43legacy_ram_write(dev, 0x478 + i, tmp);
555 }
556 }
557
558 static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev)
559 {
560 b43legacy_write_mac_bssid_templates(dev);
561 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF,
562 dev->wl->mac_addr);
563 }
564
565 static void b43legacy_set_slot_time(struct b43legacy_wldev *dev,
566 u16 slot_time)
567 {
568 /* slot_time is in usec. */
569 if (dev->phy.type != B43legacy_PHYTYPE_G)
570 return;
571 b43legacy_write16(dev, 0x684, 510 + slot_time);
572 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010,
573 slot_time);
574 }
575
576 static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev)
577 {
578 b43legacy_set_slot_time(dev, 9);
579 }
580
581 static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev)
582 {
583 b43legacy_set_slot_time(dev, 20);
584 }
585
586 /* Synchronize IRQ top- and bottom-half.
587 * IRQs must be masked before calling this.
588 * This must not be called with the irq_lock held.
589 */
590 static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev)
591 {
592 synchronize_irq(dev->dev->irq);
593 tasklet_kill(&dev->isr_tasklet);
594 }
595
596 /* DummyTransmission function, as documented on
597 * http://bcm-specs.sipsolutions.net/DummyTransmission
598 */
599 void b43legacy_dummy_transmission(struct b43legacy_wldev *dev)
600 {
601 struct b43legacy_phy *phy = &dev->phy;
602 unsigned int i;
603 unsigned int max_loop;
604 u16 value;
605 u32 buffer[5] = {
606 0x00000000,
607 0x00D40000,
608 0x00000000,
609 0x01000000,
610 0x00000000,
611 };
612
613 switch (phy->type) {
614 case B43legacy_PHYTYPE_B:
615 case B43legacy_PHYTYPE_G:
616 max_loop = 0xFA;
617 buffer[0] = 0x000B846E;
618 break;
619 default:
620 B43legacy_BUG_ON(1);
621 return;
622 }
623
624 for (i = 0; i < 5; i++)
625 b43legacy_ram_write(dev, i * 4, buffer[i]);
626
627 /* dummy read follows */
628 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
629
630 b43legacy_write16(dev, 0x0568, 0x0000);
631 b43legacy_write16(dev, 0x07C0, 0x0000);
632 b43legacy_write16(dev, 0x050C, 0x0000);
633 b43legacy_write16(dev, 0x0508, 0x0000);
634 b43legacy_write16(dev, 0x050A, 0x0000);
635 b43legacy_write16(dev, 0x054C, 0x0000);
636 b43legacy_write16(dev, 0x056A, 0x0014);
637 b43legacy_write16(dev, 0x0568, 0x0826);
638 b43legacy_write16(dev, 0x0500, 0x0000);
639 b43legacy_write16(dev, 0x0502, 0x0030);
640
641 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
642 b43legacy_radio_write16(dev, 0x0051, 0x0017);
643 for (i = 0x00; i < max_loop; i++) {
644 value = b43legacy_read16(dev, 0x050E);
645 if (value & 0x0080)
646 break;
647 udelay(10);
648 }
649 for (i = 0x00; i < 0x0A; i++) {
650 value = b43legacy_read16(dev, 0x050E);
651 if (value & 0x0400)
652 break;
653 udelay(10);
654 }
655 for (i = 0x00; i < 0x0A; i++) {
656 value = b43legacy_read16(dev, 0x0690);
657 if (!(value & 0x0100))
658 break;
659 udelay(10);
660 }
661 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
662 b43legacy_radio_write16(dev, 0x0051, 0x0037);
663 }
664
665 /* Turn the Analog ON/OFF */
666 static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on)
667 {
668 b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4);
669 }
670
671 void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags)
672 {
673 u32 tmslow;
674 u32 macctl;
675
676 flags |= B43legacy_TMSLOW_PHYCLKEN;
677 flags |= B43legacy_TMSLOW_PHYRESET;
678 ssb_device_enable(dev->dev, flags);
679 msleep(2); /* Wait for the PLL to turn on. */
680
681 /* Now take the PHY out of Reset again */
682 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
683 tmslow |= SSB_TMSLOW_FGC;
684 tmslow &= ~B43legacy_TMSLOW_PHYRESET;
685 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
686 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
687 msleep(1);
688 tmslow &= ~SSB_TMSLOW_FGC;
689 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
690 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
691 msleep(1);
692
693 /* Turn Analog ON */
694 b43legacy_switch_analog(dev, 1);
695
696 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
697 macctl &= ~B43legacy_MACCTL_GMODE;
698 if (flags & B43legacy_TMSLOW_GMODE) {
699 macctl |= B43legacy_MACCTL_GMODE;
700 dev->phy.gmode = 1;
701 } else
702 dev->phy.gmode = 0;
703 macctl |= B43legacy_MACCTL_IHR_ENABLED;
704 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
705 }
706
707 static void handle_irq_transmit_status(struct b43legacy_wldev *dev)
708 {
709 u32 v0;
710 u32 v1;
711 u16 tmp;
712 struct b43legacy_txstatus stat;
713
714 while (1) {
715 v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
716 if (!(v0 & 0x00000001))
717 break;
718 v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
719
720 stat.cookie = (v0 >> 16);
721 stat.seq = (v1 & 0x0000FFFF);
722 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
723 tmp = (v0 & 0x0000FFFF);
724 stat.frame_count = ((tmp & 0xF000) >> 12);
725 stat.rts_count = ((tmp & 0x0F00) >> 8);
726 stat.supp_reason = ((tmp & 0x001C) >> 2);
727 stat.pm_indicated = !!(tmp & 0x0080);
728 stat.intermediate = !!(tmp & 0x0040);
729 stat.for_ampdu = !!(tmp & 0x0020);
730 stat.acked = !!(tmp & 0x0002);
731
732 b43legacy_handle_txstatus(dev, &stat);
733 }
734 }
735
736 static void drain_txstatus_queue(struct b43legacy_wldev *dev)
737 {
738 u32 dummy;
739
740 if (dev->dev->id.revision < 5)
741 return;
742 /* Read all entries from the microcode TXstatus FIFO
743 * and throw them away.
744 */
745 while (1) {
746 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
747 if (!(dummy & 0x00000001))
748 break;
749 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
750 }
751 }
752
753 static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev)
754 {
755 u32 val = 0;
756
757 val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A);
758 val <<= 16;
759 val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408);
760
761 return val;
762 }
763
764 static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi)
765 {
766 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408,
767 (jssi & 0x0000FFFF));
768 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A,
769 (jssi & 0xFFFF0000) >> 16);
770 }
771
772 static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev)
773 {
774 b43legacy_jssi_write(dev, 0x7F7F7F7F);
775 b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
776 b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
777 | B43legacy_MACCMD_BGNOISE);
778 B43legacy_WARN_ON(dev->noisecalc.channel_at_start !=
779 dev->phy.channel);
780 }
781
782 static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev)
783 {
784 /* Top half of Link Quality calculation. */
785
786 if (dev->noisecalc.calculation_running)
787 return;
788 dev->noisecalc.channel_at_start = dev->phy.channel;
789 dev->noisecalc.calculation_running = 1;
790 dev->noisecalc.nr_samples = 0;
791
792 b43legacy_generate_noise_sample(dev);
793 }
794
795 static void handle_irq_noise(struct b43legacy_wldev *dev)
796 {
797 struct b43legacy_phy *phy = &dev->phy;
798 u16 tmp;
799 u8 noise[4];
800 u8 i;
801 u8 j;
802 s32 average;
803
804 /* Bottom half of Link Quality calculation. */
805
806 B43legacy_WARN_ON(!dev->noisecalc.calculation_running);
807 if (dev->noisecalc.channel_at_start != phy->channel)
808 goto drop_calculation;
809 *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev));
810 if (noise[0] == 0x7F || noise[1] == 0x7F ||
811 noise[2] == 0x7F || noise[3] == 0x7F)
812 goto generate_new;
813
814 /* Get the noise samples. */
815 B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8);
816 i = dev->noisecalc.nr_samples;
817 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
818 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
819 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
820 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
821 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
822 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
823 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
824 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
825 dev->noisecalc.nr_samples++;
826 if (dev->noisecalc.nr_samples == 8) {
827 /* Calculate the Link Quality by the noise samples. */
828 average = 0;
829 for (i = 0; i < 8; i++) {
830 for (j = 0; j < 4; j++)
831 average += dev->noisecalc.samples[i][j];
832 }
833 average /= (8 * 4);
834 average *= 125;
835 average += 64;
836 average /= 128;
837 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
838 0x40C);
839 tmp = (tmp / 128) & 0x1F;
840 if (tmp >= 8)
841 average += 2;
842 else
843 average -= 25;
844 if (tmp == 8)
845 average -= 72;
846 else
847 average -= 48;
848
849 dev->stats.link_noise = average;
850 drop_calculation:
851 dev->noisecalc.calculation_running = 0;
852 return;
853 }
854 generate_new:
855 b43legacy_generate_noise_sample(dev);
856 }
857
858 static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev)
859 {
860 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
861 /* TODO: PS TBTT */
862 } else {
863 if (1/*FIXME: the last PSpoll frame was sent successfully */)
864 b43legacy_power_saving_ctl_bits(dev, -1, -1);
865 }
866 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
867 dev->dfq_valid = 1;
868 }
869
870 static void handle_irq_atim_end(struct b43legacy_wldev *dev)
871 {
872 if (dev->dfq_valid) {
873 b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
874 b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
875 | B43legacy_MACCMD_DFQ_VALID);
876 dev->dfq_valid = 0;
877 }
878 }
879
880 static void handle_irq_pmq(struct b43legacy_wldev *dev)
881 {
882 u32 tmp;
883
884 /* TODO: AP mode. */
885
886 while (1) {
887 tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS);
888 if (!(tmp & 0x00000008))
889 break;
890 }
891 /* 16bit write is odd, but correct. */
892 b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002);
893 }
894
895 static void b43legacy_write_template_common(struct b43legacy_wldev *dev,
896 const u8 *data, u16 size,
897 u16 ram_offset,
898 u16 shm_size_offset, u8 rate)
899 {
900 u32 i;
901 u32 tmp;
902 struct b43legacy_plcp_hdr4 plcp;
903
904 plcp.data = 0;
905 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
906 b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
907 ram_offset += sizeof(u32);
908 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
909 * So leave the first two bytes of the next write blank.
910 */
911 tmp = (u32)(data[0]) << 16;
912 tmp |= (u32)(data[1]) << 24;
913 b43legacy_ram_write(dev, ram_offset, tmp);
914 ram_offset += sizeof(u32);
915 for (i = 2; i < size; i += sizeof(u32)) {
916 tmp = (u32)(data[i + 0]);
917 if (i + 1 < size)
918 tmp |= (u32)(data[i + 1]) << 8;
919 if (i + 2 < size)
920 tmp |= (u32)(data[i + 2]) << 16;
921 if (i + 3 < size)
922 tmp |= (u32)(data[i + 3]) << 24;
923 b43legacy_ram_write(dev, ram_offset + i - 2, tmp);
924 }
925 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset,
926 size + sizeof(struct b43legacy_plcp_hdr6));
927 }
928
929 /* Convert a b43legacy antenna number value to the PHY TX control value. */
930 static u16 b43legacy_antenna_to_phyctl(int antenna)
931 {
932 switch (antenna) {
933 case B43legacy_ANTENNA0:
934 return B43legacy_TX4_PHY_ANT0;
935 case B43legacy_ANTENNA1:
936 return B43legacy_TX4_PHY_ANT1;
937 }
938 return B43legacy_TX4_PHY_ANTLAST;
939 }
940
941 static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev,
942 u16 ram_offset,
943 u16 shm_size_offset)
944 {
945
946 unsigned int i, len, variable_len;
947 const struct ieee80211_mgmt *bcn;
948 const u8 *ie;
949 bool tim_found = 0;
950 unsigned int rate;
951 u16 ctl;
952 int antenna;
953 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
954
955 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
956 len = min((size_t)dev->wl->current_beacon->len,
957 0x200 - sizeof(struct b43legacy_plcp_hdr6));
958 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
959
960 b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset,
961 shm_size_offset, rate);
962
963 /* Write the PHY TX control parameters. */
964 antenna = B43legacy_ANTENNA_DEFAULT;
965 antenna = b43legacy_antenna_to_phyctl(antenna);
966 ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
967 B43legacy_SHM_SH_BEACPHYCTL);
968 /* We can't send beacons with short preamble. Would get PHY errors. */
969 ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL;
970 ctl &= ~B43legacy_TX4_PHY_ANT;
971 ctl &= ~B43legacy_TX4_PHY_ENC;
972 ctl |= antenna;
973 ctl |= B43legacy_TX4_PHY_ENC_CCK;
974 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
975 B43legacy_SHM_SH_BEACPHYCTL, ctl);
976
977 /* Find the position of the TIM and the DTIM_period value
978 * and write them to SHM. */
979 ie = bcn->u.beacon.variable;
980 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
981 for (i = 0; i < variable_len - 2; ) {
982 uint8_t ie_id, ie_len;
983
984 ie_id = ie[i];
985 ie_len = ie[i + 1];
986 if (ie_id == 5) {
987 u16 tim_position;
988 u16 dtim_period;
989 /* This is the TIM Information Element */
990
991 /* Check whether the ie_len is in the beacon data range. */
992 if (variable_len < ie_len + 2 + i)
993 break;
994 /* A valid TIM is at least 4 bytes long. */
995 if (ie_len < 4)
996 break;
997 tim_found = 1;
998
999 tim_position = sizeof(struct b43legacy_plcp_hdr6);
1000 tim_position += offsetof(struct ieee80211_mgmt,
1001 u.beacon.variable);
1002 tim_position += i;
1003
1004 dtim_period = ie[i + 3];
1005
1006 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1007 B43legacy_SHM_SH_TIMPOS, tim_position);
1008 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1009 B43legacy_SHM_SH_DTIMP, dtim_period);
1010 break;
1011 }
1012 i += ie_len + 2;
1013 }
1014 if (!tim_found) {
1015 b43legacywarn(dev->wl, "Did not find a valid TIM IE in the "
1016 "beacon template packet. AP or IBSS operation "
1017 "may be broken.\n");
1018 } else
1019 b43legacydbg(dev->wl, "Updated beacon template\n");
1020 }
1021
1022 static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev,
1023 u16 shm_offset, u16 size,
1024 struct ieee80211_rate *rate)
1025 {
1026 struct b43legacy_plcp_hdr4 plcp;
1027 u32 tmp;
1028 __le16 dur;
1029
1030 plcp.data = 0;
1031 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1032 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1033 dev->wl->vif,
1034 size,
1035 rate);
1036 /* Write PLCP in two parts and timing for packet transfer */
1037 tmp = le32_to_cpu(plcp.data);
1038 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset,
1039 tmp & 0xFFFF);
1040 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2,
1041 tmp >> 16);
1042 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6,
1043 le16_to_cpu(dur));
1044 }
1045
1046 /* Instead of using custom probe response template, this function
1047 * just patches custom beacon template by:
1048 * 1) Changing packet type
1049 * 2) Patching duration field
1050 * 3) Stripping TIM
1051 */
1052 static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev,
1053 u16 *dest_size,
1054 struct ieee80211_rate *rate)
1055 {
1056 const u8 *src_data;
1057 u8 *dest_data;
1058 u16 src_size, elem_size, src_pos, dest_pos;
1059 __le16 dur;
1060 struct ieee80211_hdr *hdr;
1061 size_t ie_start;
1062
1063 src_size = dev->wl->current_beacon->len;
1064 src_data = (const u8 *)dev->wl->current_beacon->data;
1065
1066 /* Get the start offset of the variable IEs in the packet. */
1067 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1068 B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt,
1069 u.beacon.variable));
1070
1071 if (B43legacy_WARN_ON(src_size < ie_start))
1072 return NULL;
1073
1074 dest_data = kmalloc(src_size, GFP_ATOMIC);
1075 if (unlikely(!dest_data))
1076 return NULL;
1077
1078 /* Copy the static data and all Information Elements, except the TIM. */
1079 memcpy(dest_data, src_data, ie_start);
1080 src_pos = ie_start;
1081 dest_pos = ie_start;
1082 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1083 elem_size = src_data[src_pos + 1] + 2;
1084 if (src_data[src_pos] == 5) {
1085 /* This is the TIM. */
1086 continue;
1087 }
1088 memcpy(dest_data + dest_pos, src_data + src_pos, elem_size);
1089 dest_pos += elem_size;
1090 }
1091 *dest_size = dest_pos;
1092 hdr = (struct ieee80211_hdr *)dest_data;
1093
1094 /* Set the frame control. */
1095 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1096 IEEE80211_STYPE_PROBE_RESP);
1097 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1098 dev->wl->vif,
1099 *dest_size,
1100 rate);
1101 hdr->duration_id = dur;
1102
1103 return dest_data;
1104 }
1105
1106 static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev,
1107 u16 ram_offset,
1108 u16 shm_size_offset,
1109 struct ieee80211_rate *rate)
1110 {
1111 const u8 *probe_resp_data;
1112 u16 size;
1113
1114 size = dev->wl->current_beacon->len;
1115 probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate);
1116 if (unlikely(!probe_resp_data))
1117 return;
1118
1119 /* Looks like PLCP headers plus packet timings are stored for
1120 * all possible basic rates
1121 */
1122 b43legacy_write_probe_resp_plcp(dev, 0x31A, size,
1123 &b43legacy_b_ratetable[0]);
1124 b43legacy_write_probe_resp_plcp(dev, 0x32C, size,
1125 &b43legacy_b_ratetable[1]);
1126 b43legacy_write_probe_resp_plcp(dev, 0x33E, size,
1127 &b43legacy_b_ratetable[2]);
1128 b43legacy_write_probe_resp_plcp(dev, 0x350, size,
1129 &b43legacy_b_ratetable[3]);
1130
1131 size = min((size_t)size,
1132 0x200 - sizeof(struct b43legacy_plcp_hdr6));
1133 b43legacy_write_template_common(dev, probe_resp_data,
1134 size, ram_offset,
1135 shm_size_offset, rate->hw_value);
1136 kfree(probe_resp_data);
1137 }
1138
1139 static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev)
1140 {
1141 struct b43legacy_wl *wl = dev->wl;
1142
1143 if (wl->beacon0_uploaded)
1144 return;
1145 b43legacy_write_beacon_template(dev, 0x68, 0x18);
1146 /* FIXME: Probe resp upload doesn't really belong here,
1147 * but we don't use that feature anyway. */
1148 b43legacy_write_probe_resp_template(dev, 0x268, 0x4A,
1149 &__b43legacy_ratetable[3]);
1150 wl->beacon0_uploaded = 1;
1151 }
1152
1153 static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev)
1154 {
1155 struct b43legacy_wl *wl = dev->wl;
1156
1157 if (wl->beacon1_uploaded)
1158 return;
1159 b43legacy_write_beacon_template(dev, 0x468, 0x1A);
1160 wl->beacon1_uploaded = 1;
1161 }
1162
1163 static void handle_irq_beacon(struct b43legacy_wldev *dev)
1164 {
1165 struct b43legacy_wl *wl = dev->wl;
1166 u32 cmd, beacon0_valid, beacon1_valid;
1167
1168 if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
1169 return;
1170
1171 /* This is the bottom half of the asynchronous beacon update. */
1172
1173 /* Ignore interrupt in the future. */
1174 dev->irq_mask &= ~B43legacy_IRQ_BEACON;
1175
1176 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1177 beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID);
1178 beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID);
1179
1180 /* Schedule interrupt manually, if busy. */
1181 if (beacon0_valid && beacon1_valid) {
1182 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON);
1183 dev->irq_mask |= B43legacy_IRQ_BEACON;
1184 return;
1185 }
1186
1187 if (unlikely(wl->beacon_templates_virgin)) {
1188 /* We never uploaded a beacon before.
1189 * Upload both templates now, but only mark one valid. */
1190 wl->beacon_templates_virgin = 0;
1191 b43legacy_upload_beacon0(dev);
1192 b43legacy_upload_beacon1(dev);
1193 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1194 cmd |= B43legacy_MACCMD_BEACON0_VALID;
1195 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1196 } else {
1197 if (!beacon0_valid) {
1198 b43legacy_upload_beacon0(dev);
1199 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1200 cmd |= B43legacy_MACCMD_BEACON0_VALID;
1201 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1202 } else if (!beacon1_valid) {
1203 b43legacy_upload_beacon1(dev);
1204 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1205 cmd |= B43legacy_MACCMD_BEACON1_VALID;
1206 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1207 }
1208 }
1209 }
1210
1211 static void b43legacy_beacon_update_trigger_work(struct work_struct *work)
1212 {
1213 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
1214 beacon_update_trigger);
1215 struct b43legacy_wldev *dev;
1216
1217 mutex_lock(&wl->mutex);
1218 dev = wl->current_dev;
1219 if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) {
1220 spin_lock_irq(&wl->irq_lock);
1221 /* Update beacon right away or defer to IRQ. */
1222 handle_irq_beacon(dev);
1223 /* The handler might have updated the IRQ mask. */
1224 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1225 dev->irq_mask);
1226 mmiowb();
1227 spin_unlock_irq(&wl->irq_lock);
1228 }
1229 mutex_unlock(&wl->mutex);
1230 }
1231
1232 /* Asynchronously update the packet templates in template RAM.
1233 * Locking: Requires wl->irq_lock to be locked. */
1234 static void b43legacy_update_templates(struct b43legacy_wl *wl)
1235 {
1236 struct sk_buff *beacon;
1237 /* This is the top half of the ansynchronous beacon update. The bottom
1238 * half is the beacon IRQ. Beacon update must be asynchronous to avoid
1239 * sending an invalid beacon. This can happen for example, if the
1240 * firmware transmits a beacon while we are updating it. */
1241
1242 /* We could modify the existing beacon and set the aid bit in the TIM
1243 * field, but that would probably require resizing and moving of data
1244 * within the beacon template. Simply request a new beacon and let
1245 * mac80211 do the hard work. */
1246 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1247 if (unlikely(!beacon))
1248 return;
1249
1250 if (wl->current_beacon)
1251 dev_kfree_skb_any(wl->current_beacon);
1252 wl->current_beacon = beacon;
1253 wl->beacon0_uploaded = 0;
1254 wl->beacon1_uploaded = 0;
1255 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1256 }
1257
1258 static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev,
1259 u16 beacon_int)
1260 {
1261 b43legacy_time_lock(dev);
1262 if (dev->dev->id.revision >= 3) {
1263 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP,
1264 (beacon_int << 16));
1265 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START,
1266 (beacon_int << 10));
1267 } else {
1268 b43legacy_write16(dev, 0x606, (beacon_int >> 6));
1269 b43legacy_write16(dev, 0x610, beacon_int);
1270 }
1271 b43legacy_time_unlock(dev);
1272 b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1273 }
1274
1275 static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
1276 {
1277 }
1278
1279 /* Interrupt handler bottom-half */
1280 static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev)
1281 {
1282 u32 reason;
1283 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1284 u32 merged_dma_reason = 0;
1285 int i;
1286 unsigned long flags;
1287
1288 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1289
1290 B43legacy_WARN_ON(b43legacy_status(dev) <
1291 B43legacy_STAT_INITIALIZED);
1292
1293 reason = dev->irq_reason;
1294 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1295 dma_reason[i] = dev->dma_reason[i];
1296 merged_dma_reason |= dma_reason[i];
1297 }
1298
1299 if (unlikely(reason & B43legacy_IRQ_MAC_TXERR))
1300 b43legacyerr(dev->wl, "MAC transmission error\n");
1301
1302 if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) {
1303 b43legacyerr(dev->wl, "PHY transmission error\n");
1304 rmb();
1305 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1306 b43legacyerr(dev->wl, "Too many PHY TX errors, "
1307 "restarting the controller\n");
1308 b43legacy_controller_restart(dev, "PHY TX errors");
1309 }
1310 }
1311
1312 if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK |
1313 B43legacy_DMAIRQ_NONFATALMASK))) {
1314 if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) {
1315 b43legacyerr(dev->wl, "Fatal DMA error: "
1316 "0x%08X, 0x%08X, 0x%08X, "
1317 "0x%08X, 0x%08X, 0x%08X\n",
1318 dma_reason[0], dma_reason[1],
1319 dma_reason[2], dma_reason[3],
1320 dma_reason[4], dma_reason[5]);
1321 b43legacy_controller_restart(dev, "DMA error");
1322 mmiowb();
1323 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1324 return;
1325 }
1326 if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK)
1327 b43legacyerr(dev->wl, "DMA error: "
1328 "0x%08X, 0x%08X, 0x%08X, "
1329 "0x%08X, 0x%08X, 0x%08X\n",
1330 dma_reason[0], dma_reason[1],
1331 dma_reason[2], dma_reason[3],
1332 dma_reason[4], dma_reason[5]);
1333 }
1334
1335 if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG))
1336 handle_irq_ucode_debug(dev);
1337 if (reason & B43legacy_IRQ_TBTT_INDI)
1338 handle_irq_tbtt_indication(dev);
1339 if (reason & B43legacy_IRQ_ATIM_END)
1340 handle_irq_atim_end(dev);
1341 if (reason & B43legacy_IRQ_BEACON)
1342 handle_irq_beacon(dev);
1343 if (reason & B43legacy_IRQ_PMQ)
1344 handle_irq_pmq(dev);
1345 if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK)
1346 ;/*TODO*/
1347 if (reason & B43legacy_IRQ_NOISESAMPLE_OK)
1348 handle_irq_noise(dev);
1349
1350 /* Check the DMA reason registers for received data. */
1351 if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) {
1352 if (b43legacy_using_pio(dev))
1353 b43legacy_pio_rx(dev->pio.queue0);
1354 else
1355 b43legacy_dma_rx(dev->dma.rx_ring0);
1356 }
1357 B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE);
1358 B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE);
1359 if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) {
1360 if (b43legacy_using_pio(dev))
1361 b43legacy_pio_rx(dev->pio.queue3);
1362 else
1363 b43legacy_dma_rx(dev->dma.rx_ring3);
1364 }
1365 B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE);
1366 B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE);
1367
1368 if (reason & B43legacy_IRQ_TX_OK)
1369 handle_irq_transmit_status(dev);
1370
1371 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1372 mmiowb();
1373 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1374 }
1375
1376 static void pio_irq_workaround(struct b43legacy_wldev *dev,
1377 u16 base, int queueidx)
1378 {
1379 u16 rxctl;
1380
1381 rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL);
1382 if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE)
1383 dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE;
1384 else
1385 dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE;
1386 }
1387
1388 static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason)
1389 {
1390 if (b43legacy_using_pio(dev) &&
1391 (dev->dev->id.revision < 3) &&
1392 (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) {
1393 /* Apply a PIO specific workaround to the dma_reasons */
1394 pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0);
1395 pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1);
1396 pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2);
1397 pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3);
1398 }
1399
1400 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason);
1401
1402 b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON,
1403 dev->dma_reason[0]);
1404 b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON,
1405 dev->dma_reason[1]);
1406 b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON,
1407 dev->dma_reason[2]);
1408 b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON,
1409 dev->dma_reason[3]);
1410 b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON,
1411 dev->dma_reason[4]);
1412 b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON,
1413 dev->dma_reason[5]);
1414 }
1415
1416 /* Interrupt handler top-half */
1417 static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id)
1418 {
1419 irqreturn_t ret = IRQ_NONE;
1420 struct b43legacy_wldev *dev = dev_id;
1421 u32 reason;
1422
1423 B43legacy_WARN_ON(!dev);
1424
1425 spin_lock(&dev->wl->irq_lock);
1426
1427 if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED))
1428 /* This can only happen on shared IRQ lines. */
1429 goto out;
1430 reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1431 if (reason == 0xffffffff) /* shared IRQ */
1432 goto out;
1433 ret = IRQ_HANDLED;
1434 reason &= dev->irq_mask;
1435 if (!reason)
1436 goto out;
1437
1438 dev->dma_reason[0] = b43legacy_read32(dev,
1439 B43legacy_MMIO_DMA0_REASON)
1440 & 0x0001DC00;
1441 dev->dma_reason[1] = b43legacy_read32(dev,
1442 B43legacy_MMIO_DMA1_REASON)
1443 & 0x0000DC00;
1444 dev->dma_reason[2] = b43legacy_read32(dev,
1445 B43legacy_MMIO_DMA2_REASON)
1446 & 0x0000DC00;
1447 dev->dma_reason[3] = b43legacy_read32(dev,
1448 B43legacy_MMIO_DMA3_REASON)
1449 & 0x0001DC00;
1450 dev->dma_reason[4] = b43legacy_read32(dev,
1451 B43legacy_MMIO_DMA4_REASON)
1452 & 0x0000DC00;
1453 dev->dma_reason[5] = b43legacy_read32(dev,
1454 B43legacy_MMIO_DMA5_REASON)
1455 & 0x0000DC00;
1456
1457 b43legacy_interrupt_ack(dev, reason);
1458 /* Disable all IRQs. They are enabled again in the bottom half. */
1459 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
1460 /* Save the reason code and call our bottom half. */
1461 dev->irq_reason = reason;
1462 tasklet_schedule(&dev->isr_tasklet);
1463 out:
1464 mmiowb();
1465 spin_unlock(&dev->wl->irq_lock);
1466
1467 return ret;
1468 }
1469
1470 static void b43legacy_release_firmware(struct b43legacy_wldev *dev)
1471 {
1472 release_firmware(dev->fw.ucode);
1473 dev->fw.ucode = NULL;
1474 release_firmware(dev->fw.pcm);
1475 dev->fw.pcm = NULL;
1476 release_firmware(dev->fw.initvals);
1477 dev->fw.initvals = NULL;
1478 release_firmware(dev->fw.initvals_band);
1479 dev->fw.initvals_band = NULL;
1480 }
1481
1482 static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl)
1483 {
1484 b43legacyerr(wl, "You must go to http://linuxwireless.org/en/users/"
1485 "Drivers/b43#devicefirmware "
1486 "and download the correct firmware (version 3).\n");
1487 }
1488
1489 static int do_request_fw(struct b43legacy_wldev *dev,
1490 const char *name,
1491 const struct firmware **fw)
1492 {
1493 char path[sizeof(modparam_fwpostfix) + 32];
1494 struct b43legacy_fw_header *hdr;
1495 u32 size;
1496 int err;
1497
1498 if (!name)
1499 return 0;
1500
1501 snprintf(path, ARRAY_SIZE(path),
1502 "b43legacy%s/%s.fw",
1503 modparam_fwpostfix, name);
1504 err = request_firmware(fw, path, dev->dev->dev);
1505 if (err) {
1506 b43legacyerr(dev->wl, "Firmware file \"%s\" not found "
1507 "or load failed.\n", path);
1508 return err;
1509 }
1510 if ((*fw)->size < sizeof(struct b43legacy_fw_header))
1511 goto err_format;
1512 hdr = (struct b43legacy_fw_header *)((*fw)->data);
1513 switch (hdr->type) {
1514 case B43legacy_FW_TYPE_UCODE:
1515 case B43legacy_FW_TYPE_PCM:
1516 size = be32_to_cpu(hdr->size);
1517 if (size != (*fw)->size - sizeof(struct b43legacy_fw_header))
1518 goto err_format;
1519 /* fallthrough */
1520 case B43legacy_FW_TYPE_IV:
1521 if (hdr->ver != 1)
1522 goto err_format;
1523 break;
1524 default:
1525 goto err_format;
1526 }
1527
1528 return err;
1529
1530 err_format:
1531 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
1532 return -EPROTO;
1533 }
1534
1535 static int b43legacy_request_firmware(struct b43legacy_wldev *dev)
1536 {
1537 struct b43legacy_firmware *fw = &dev->fw;
1538 const u8 rev = dev->dev->id.revision;
1539 const char *filename;
1540 u32 tmshigh;
1541 int err;
1542
1543 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1544 if (!fw->ucode) {
1545 if (rev == 2)
1546 filename = "ucode2";
1547 else if (rev == 4)
1548 filename = "ucode4";
1549 else
1550 filename = "ucode5";
1551 err = do_request_fw(dev, filename, &fw->ucode);
1552 if (err)
1553 goto err_load;
1554 }
1555 if (!fw->pcm) {
1556 if (rev < 5)
1557 filename = "pcm4";
1558 else
1559 filename = "pcm5";
1560 err = do_request_fw(dev, filename, &fw->pcm);
1561 if (err)
1562 goto err_load;
1563 }
1564 if (!fw->initvals) {
1565 switch (dev->phy.type) {
1566 case B43legacy_PHYTYPE_B:
1567 case B43legacy_PHYTYPE_G:
1568 if ((rev >= 5) && (rev <= 10))
1569 filename = "b0g0initvals5";
1570 else if (rev == 2 || rev == 4)
1571 filename = "b0g0initvals2";
1572 else
1573 goto err_no_initvals;
1574 break;
1575 default:
1576 goto err_no_initvals;
1577 }
1578 err = do_request_fw(dev, filename, &fw->initvals);
1579 if (err)
1580 goto err_load;
1581 }
1582 if (!fw->initvals_band) {
1583 switch (dev->phy.type) {
1584 case B43legacy_PHYTYPE_B:
1585 case B43legacy_PHYTYPE_G:
1586 if ((rev >= 5) && (rev <= 10))
1587 filename = "b0g0bsinitvals5";
1588 else if (rev >= 11)
1589 filename = NULL;
1590 else if (rev == 2 || rev == 4)
1591 filename = NULL;
1592 else
1593 goto err_no_initvals;
1594 break;
1595 default:
1596 goto err_no_initvals;
1597 }
1598 err = do_request_fw(dev, filename, &fw->initvals_band);
1599 if (err)
1600 goto err_load;
1601 }
1602
1603 return 0;
1604
1605 err_load:
1606 b43legacy_print_fw_helptext(dev->wl);
1607 goto error;
1608
1609 err_no_initvals:
1610 err = -ENODEV;
1611 b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, "
1612 "core rev %u\n", dev->phy.type, rev);
1613 goto error;
1614
1615 error:
1616 b43legacy_release_firmware(dev);
1617 return err;
1618 }
1619
1620 static int b43legacy_upload_microcode(struct b43legacy_wldev *dev)
1621 {
1622 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1623 const __be32 *data;
1624 unsigned int i;
1625 unsigned int len;
1626 u16 fwrev;
1627 u16 fwpatch;
1628 u16 fwdate;
1629 u16 fwtime;
1630 u32 tmp, macctl;
1631 int err = 0;
1632
1633 /* Jump the microcode PSM to offset 0 */
1634 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1635 B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN);
1636 macctl |= B43legacy_MACCTL_PSM_JMP0;
1637 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1638 /* Zero out all microcode PSM registers and shared memory. */
1639 for (i = 0; i < 64; i++)
1640 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0);
1641 for (i = 0; i < 4096; i += 2)
1642 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0);
1643
1644 /* Upload Microcode. */
1645 data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1646 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1647 b43legacy_shm_control_word(dev,
1648 B43legacy_SHM_UCODE |
1649 B43legacy_SHM_AUTOINC_W,
1650 0x0000);
1651 for (i = 0; i < len; i++) {
1652 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1653 be32_to_cpu(data[i]));
1654 udelay(10);
1655 }
1656
1657 if (dev->fw.pcm) {
1658 /* Upload PCM data. */
1659 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1660 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1661 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA);
1662 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000);
1663 /* No need for autoinc bit in SHM_HW */
1664 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB);
1665 for (i = 0; i < len; i++) {
1666 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1667 be32_to_cpu(data[i]));
1668 udelay(10);
1669 }
1670 }
1671
1672 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1673 B43legacy_IRQ_ALL);
1674
1675 /* Start the microcode PSM */
1676 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1677 macctl &= ~B43legacy_MACCTL_PSM_JMP0;
1678 macctl |= B43legacy_MACCTL_PSM_RUN;
1679 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1680
1681 /* Wait for the microcode to load and respond */
1682 i = 0;
1683 while (1) {
1684 tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1685 if (tmp == B43legacy_IRQ_MAC_SUSPENDED)
1686 break;
1687 i++;
1688 if (i >= B43legacy_IRQWAIT_MAX_RETRIES) {
1689 b43legacyerr(dev->wl, "Microcode not responding\n");
1690 b43legacy_print_fw_helptext(dev->wl);
1691 err = -ENODEV;
1692 goto error;
1693 }
1694 msleep_interruptible(50);
1695 if (signal_pending(current)) {
1696 err = -EINTR;
1697 goto error;
1698 }
1699 }
1700 /* dummy read follows */
1701 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1702
1703 /* Get and check the revisions. */
1704 fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1705 B43legacy_SHM_SH_UCODEREV);
1706 fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1707 B43legacy_SHM_SH_UCODEPATCH);
1708 fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1709 B43legacy_SHM_SH_UCODEDATE);
1710 fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1711 B43legacy_SHM_SH_UCODETIME);
1712
1713 if (fwrev > 0x128) {
1714 b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE."
1715 " Only firmware from binary drivers version 3.x"
1716 " is supported. You must change your firmware"
1717 " files.\n");
1718 b43legacy_print_fw_helptext(dev->wl);
1719 err = -EOPNOTSUPP;
1720 goto error;
1721 }
1722 b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u "
1723 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch,
1724 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1725 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F,
1726 fwtime & 0x1F);
1727
1728 dev->fw.rev = fwrev;
1729 dev->fw.patch = fwpatch;
1730
1731 return 0;
1732
1733 error:
1734 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1735 macctl &= ~B43legacy_MACCTL_PSM_RUN;
1736 macctl |= B43legacy_MACCTL_PSM_JMP0;
1737 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1738
1739 return err;
1740 }
1741
1742 static int b43legacy_write_initvals(struct b43legacy_wldev *dev,
1743 const struct b43legacy_iv *ivals,
1744 size_t count,
1745 size_t array_size)
1746 {
1747 const struct b43legacy_iv *iv;
1748 u16 offset;
1749 size_t i;
1750 bool bit32;
1751
1752 BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6);
1753 iv = ivals;
1754 for (i = 0; i < count; i++) {
1755 if (array_size < sizeof(iv->offset_size))
1756 goto err_format;
1757 array_size -= sizeof(iv->offset_size);
1758 offset = be16_to_cpu(iv->offset_size);
1759 bit32 = !!(offset & B43legacy_IV_32BIT);
1760 offset &= B43legacy_IV_OFFSET_MASK;
1761 if (offset >= 0x1000)
1762 goto err_format;
1763 if (bit32) {
1764 u32 value;
1765
1766 if (array_size < sizeof(iv->data.d32))
1767 goto err_format;
1768 array_size -= sizeof(iv->data.d32);
1769
1770 value = get_unaligned_be32(&iv->data.d32);
1771 b43legacy_write32(dev, offset, value);
1772
1773 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1774 sizeof(__be16) +
1775 sizeof(__be32));
1776 } else {
1777 u16 value;
1778
1779 if (array_size < sizeof(iv->data.d16))
1780 goto err_format;
1781 array_size -= sizeof(iv->data.d16);
1782
1783 value = be16_to_cpu(iv->data.d16);
1784 b43legacy_write16(dev, offset, value);
1785
1786 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1787 sizeof(__be16) +
1788 sizeof(__be16));
1789 }
1790 }
1791 if (array_size)
1792 goto err_format;
1793
1794 return 0;
1795
1796 err_format:
1797 b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n");
1798 b43legacy_print_fw_helptext(dev->wl);
1799
1800 return -EPROTO;
1801 }
1802
1803 static int b43legacy_upload_initvals(struct b43legacy_wldev *dev)
1804 {
1805 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1806 const struct b43legacy_fw_header *hdr;
1807 struct b43legacy_firmware *fw = &dev->fw;
1808 const struct b43legacy_iv *ivals;
1809 size_t count;
1810 int err;
1811
1812 hdr = (const struct b43legacy_fw_header *)(fw->initvals->data);
1813 ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len);
1814 count = be32_to_cpu(hdr->size);
1815 err = b43legacy_write_initvals(dev, ivals, count,
1816 fw->initvals->size - hdr_len);
1817 if (err)
1818 goto out;
1819 if (fw->initvals_band) {
1820 hdr = (const struct b43legacy_fw_header *)
1821 (fw->initvals_band->data);
1822 ivals = (const struct b43legacy_iv *)(fw->initvals_band->data
1823 + hdr_len);
1824 count = be32_to_cpu(hdr->size);
1825 err = b43legacy_write_initvals(dev, ivals, count,
1826 fw->initvals_band->size - hdr_len);
1827 if (err)
1828 goto out;
1829 }
1830 out:
1831
1832 return err;
1833 }
1834
1835 /* Initialize the GPIOs
1836 * http://bcm-specs.sipsolutions.net/GPIO
1837 */
1838 static int b43legacy_gpio_init(struct b43legacy_wldev *dev)
1839 {
1840 struct ssb_bus *bus = dev->dev->bus;
1841 struct ssb_device *gpiodev, *pcidev = NULL;
1842 u32 mask;
1843 u32 set;
1844
1845 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1846 b43legacy_read32(dev,
1847 B43legacy_MMIO_MACCTL)
1848 & 0xFFFF3FFF);
1849
1850 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1851 b43legacy_read16(dev,
1852 B43legacy_MMIO_GPIO_MASK)
1853 | 0x000F);
1854
1855 mask = 0x0000001F;
1856 set = 0x0000000F;
1857 if (dev->dev->bus->chip_id == 0x4301) {
1858 mask |= 0x0060;
1859 set |= 0x0060;
1860 }
1861 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) {
1862 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1863 b43legacy_read16(dev,
1864 B43legacy_MMIO_GPIO_MASK)
1865 | 0x0200);
1866 mask |= 0x0200;
1867 set |= 0x0200;
1868 }
1869 if (dev->dev->id.revision >= 2)
1870 mask |= 0x0010; /* FIXME: This is redundant. */
1871
1872 #ifdef CONFIG_SSB_DRIVER_PCICORE
1873 pcidev = bus->pcicore.dev;
1874 #endif
1875 gpiodev = bus->chipco.dev ? : pcidev;
1876 if (!gpiodev)
1877 return 0;
1878 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL,
1879 (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL)
1880 & mask) | set);
1881
1882 return 0;
1883 }
1884
1885 /* Turn off all GPIO stuff. Call this on module unload, for example. */
1886 static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev)
1887 {
1888 struct ssb_bus *bus = dev->dev->bus;
1889 struct ssb_device *gpiodev, *pcidev = NULL;
1890
1891 #ifdef CONFIG_SSB_DRIVER_PCICORE
1892 pcidev = bus->pcicore.dev;
1893 #endif
1894 gpiodev = bus->chipco.dev ? : pcidev;
1895 if (!gpiodev)
1896 return;
1897 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0);
1898 }
1899
1900 /* http://bcm-specs.sipsolutions.net/EnableMac */
1901 void b43legacy_mac_enable(struct b43legacy_wldev *dev)
1902 {
1903 dev->mac_suspended--;
1904 B43legacy_WARN_ON(dev->mac_suspended < 0);
1905 B43legacy_WARN_ON(irqs_disabled());
1906 if (dev->mac_suspended == 0) {
1907 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1908 b43legacy_read32(dev,
1909 B43legacy_MMIO_MACCTL)
1910 | B43legacy_MACCTL_ENABLED);
1911 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1912 B43legacy_IRQ_MAC_SUSPENDED);
1913 /* the next two are dummy reads */
1914 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1915 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1916 b43legacy_power_saving_ctl_bits(dev, -1, -1);
1917
1918 /* Re-enable IRQs. */
1919 spin_lock_irq(&dev->wl->irq_lock);
1920 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1921 dev->irq_mask);
1922 spin_unlock_irq(&dev->wl->irq_lock);
1923 }
1924 }
1925
1926 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
1927 void b43legacy_mac_suspend(struct b43legacy_wldev *dev)
1928 {
1929 int i;
1930 u32 tmp;
1931
1932 might_sleep();
1933 B43legacy_WARN_ON(irqs_disabled());
1934 B43legacy_WARN_ON(dev->mac_suspended < 0);
1935
1936 if (dev->mac_suspended == 0) {
1937 /* Mask IRQs before suspending MAC. Otherwise
1938 * the MAC stays busy and won't suspend. */
1939 spin_lock_irq(&dev->wl->irq_lock);
1940 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
1941 spin_unlock_irq(&dev->wl->irq_lock);
1942 b43legacy_synchronize_irq(dev);
1943
1944 b43legacy_power_saving_ctl_bits(dev, -1, 1);
1945 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1946 b43legacy_read32(dev,
1947 B43legacy_MMIO_MACCTL)
1948 & ~B43legacy_MACCTL_ENABLED);
1949 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1950 for (i = 40; i; i--) {
1951 tmp = b43legacy_read32(dev,
1952 B43legacy_MMIO_GEN_IRQ_REASON);
1953 if (tmp & B43legacy_IRQ_MAC_SUSPENDED)
1954 goto out;
1955 msleep(1);
1956 }
1957 b43legacyerr(dev->wl, "MAC suspend failed\n");
1958 }
1959 out:
1960 dev->mac_suspended++;
1961 }
1962
1963 static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev)
1964 {
1965 struct b43legacy_wl *wl = dev->wl;
1966 u32 ctl;
1967 u16 cfp_pretbtt;
1968
1969 ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1970 /* Reset status to STA infrastructure mode. */
1971 ctl &= ~B43legacy_MACCTL_AP;
1972 ctl &= ~B43legacy_MACCTL_KEEP_CTL;
1973 ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP;
1974 ctl &= ~B43legacy_MACCTL_KEEP_BAD;
1975 ctl &= ~B43legacy_MACCTL_PROMISC;
1976 ctl &= ~B43legacy_MACCTL_BEACPROMISC;
1977 ctl |= B43legacy_MACCTL_INFRA;
1978
1979 if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
1980 ctl |= B43legacy_MACCTL_AP;
1981 else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))
1982 ctl &= ~B43legacy_MACCTL_INFRA;
1983
1984 if (wl->filter_flags & FIF_CONTROL)
1985 ctl |= B43legacy_MACCTL_KEEP_CTL;
1986 if (wl->filter_flags & FIF_FCSFAIL)
1987 ctl |= B43legacy_MACCTL_KEEP_BAD;
1988 if (wl->filter_flags & FIF_PLCPFAIL)
1989 ctl |= B43legacy_MACCTL_KEEP_BADPLCP;
1990 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
1991 ctl |= B43legacy_MACCTL_PROMISC;
1992 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
1993 ctl |= B43legacy_MACCTL_BEACPROMISC;
1994
1995 /* Workaround: On old hardware the HW-MAC-address-filter
1996 * doesn't work properly, so always run promisc in filter
1997 * it in software. */
1998 if (dev->dev->id.revision <= 4)
1999 ctl |= B43legacy_MACCTL_PROMISC;
2000
2001 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
2002
2003 cfp_pretbtt = 2;
2004 if ((ctl & B43legacy_MACCTL_INFRA) &&
2005 !(ctl & B43legacy_MACCTL_AP)) {
2006 if (dev->dev->bus->chip_id == 0x4306 &&
2007 dev->dev->bus->chip_rev == 3)
2008 cfp_pretbtt = 100;
2009 else
2010 cfp_pretbtt = 50;
2011 }
2012 b43legacy_write16(dev, 0x612, cfp_pretbtt);
2013 }
2014
2015 static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
2016 u16 rate,
2017 int is_ofdm)
2018 {
2019 u16 offset;
2020
2021 if (is_ofdm) {
2022 offset = 0x480;
2023 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2024 } else {
2025 offset = 0x4C0;
2026 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2027 }
2028 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
2029 b43legacy_shm_read16(dev,
2030 B43legacy_SHM_SHARED, offset));
2031 }
2032
2033 static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
2034 {
2035 switch (dev->phy.type) {
2036 case B43legacy_PHYTYPE_G:
2037 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
2038 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
2039 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
2040 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
2041 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
2042 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
2043 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2044 /* fallthrough */
2045 case B43legacy_PHYTYPE_B:
2046 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
2047 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
2048 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
2049 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
2050 break;
2051 default:
2052 B43legacy_BUG_ON(1);
2053 }
2054 }
2055
2056 /* Set the TX-Antenna for management frames sent by firmware. */
2057 static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
2058 int antenna)
2059 {
2060 u16 ant = 0;
2061 u16 tmp;
2062
2063 switch (antenna) {
2064 case B43legacy_ANTENNA0:
2065 ant |= B43legacy_TX4_PHY_ANT0;
2066 break;
2067 case B43legacy_ANTENNA1:
2068 ant |= B43legacy_TX4_PHY_ANT1;
2069 break;
2070 case B43legacy_ANTENNA_AUTO:
2071 ant |= B43legacy_TX4_PHY_ANTLAST;
2072 break;
2073 default:
2074 B43legacy_BUG_ON(1);
2075 }
2076
2077 /* FIXME We also need to set the other flags of the PHY control
2078 * field somewhere. */
2079
2080 /* For Beacons */
2081 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2082 B43legacy_SHM_SH_BEACPHYCTL);
2083 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2084 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2085 B43legacy_SHM_SH_BEACPHYCTL, tmp);
2086 /* For ACK/CTS */
2087 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2088 B43legacy_SHM_SH_ACKCTSPHYCTL);
2089 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2090 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2091 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
2092 /* For Probe Resposes */
2093 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2094 B43legacy_SHM_SH_PRPHYCTL);
2095 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2096 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2097 B43legacy_SHM_SH_PRPHYCTL, tmp);
2098 }
2099
2100 /* This is the opposite of b43legacy_chip_init() */
2101 static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
2102 {
2103 b43legacy_radio_turn_off(dev, 1);
2104 b43legacy_gpio_cleanup(dev);
2105 /* firmware is released later */
2106 }
2107
2108 /* Initialize the chip
2109 * http://bcm-specs.sipsolutions.net/ChipInit
2110 */
2111 static int b43legacy_chip_init(struct b43legacy_wldev *dev)
2112 {
2113 struct b43legacy_phy *phy = &dev->phy;
2114 int err;
2115 int tmp;
2116 u32 value32, macctl;
2117 u16 value16;
2118
2119 /* Initialize the MAC control */
2120 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
2121 if (dev->phy.gmode)
2122 macctl |= B43legacy_MACCTL_GMODE;
2123 macctl |= B43legacy_MACCTL_INFRA;
2124 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
2125
2126 err = b43legacy_request_firmware(dev);
2127 if (err)
2128 goto out;
2129 err = b43legacy_upload_microcode(dev);
2130 if (err)
2131 goto out; /* firmware is released later */
2132
2133 err = b43legacy_gpio_init(dev);
2134 if (err)
2135 goto out; /* firmware is released later */
2136
2137 err = b43legacy_upload_initvals(dev);
2138 if (err)
2139 goto err_gpio_clean;
2140 b43legacy_radio_turn_on(dev);
2141
2142 b43legacy_write16(dev, 0x03E6, 0x0000);
2143 err = b43legacy_phy_init(dev);
2144 if (err)
2145 goto err_radio_off;
2146
2147 /* Select initial Interference Mitigation. */
2148 tmp = phy->interfmode;
2149 phy->interfmode = B43legacy_INTERFMODE_NONE;
2150 b43legacy_radio_set_interference_mitigation(dev, tmp);
2151
2152 b43legacy_phy_set_antenna_diversity(dev);
2153 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
2154
2155 if (phy->type == B43legacy_PHYTYPE_B) {
2156 value16 = b43legacy_read16(dev, 0x005E);
2157 value16 |= 0x0004;
2158 b43legacy_write16(dev, 0x005E, value16);
2159 }
2160 b43legacy_write32(dev, 0x0100, 0x01000000);
2161 if (dev->dev->id.revision < 5)
2162 b43legacy_write32(dev, 0x010C, 0x01000000);
2163
2164 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2165 value32 &= ~B43legacy_MACCTL_INFRA;
2166 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2167 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2168 value32 |= B43legacy_MACCTL_INFRA;
2169 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2170
2171 if (b43legacy_using_pio(dev)) {
2172 b43legacy_write32(dev, 0x0210, 0x00000100);
2173 b43legacy_write32(dev, 0x0230, 0x00000100);
2174 b43legacy_write32(dev, 0x0250, 0x00000100);
2175 b43legacy_write32(dev, 0x0270, 0x00000100);
2176 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
2177 0x0000);
2178 }
2179
2180 /* Probe Response Timeout value */
2181 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2182 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
2183
2184 /* Initially set the wireless operation mode. */
2185 b43legacy_adjust_opmode(dev);
2186
2187 if (dev->dev->id.revision < 3) {
2188 b43legacy_write16(dev, 0x060E, 0x0000);
2189 b43legacy_write16(dev, 0x0610, 0x8000);
2190 b43legacy_write16(dev, 0x0604, 0x0000);
2191 b43legacy_write16(dev, 0x0606, 0x0200);
2192 } else {
2193 b43legacy_write32(dev, 0x0188, 0x80000000);
2194 b43legacy_write32(dev, 0x018C, 0x02000000);
2195 }
2196 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
2197 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2198 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2199 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2200 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2201 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2202 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2203
2204 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2205 value32 |= 0x00100000;
2206 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2207
2208 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
2209 dev->dev->bus->chipco.fast_pwrup_delay);
2210
2211 /* PHY TX errors counter. */
2212 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2213
2214 B43legacy_WARN_ON(err != 0);
2215 b43legacydbg(dev->wl, "Chip initialized\n");
2216 out:
2217 return err;
2218
2219 err_radio_off:
2220 b43legacy_radio_turn_off(dev, 1);
2221 err_gpio_clean:
2222 b43legacy_gpio_cleanup(dev);
2223 goto out;
2224 }
2225
2226 static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
2227 {
2228 struct b43legacy_phy *phy = &dev->phy;
2229
2230 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
2231 return;
2232
2233 b43legacy_mac_suspend(dev);
2234 b43legacy_phy_lo_g_measure(dev);
2235 b43legacy_mac_enable(dev);
2236 }
2237
2238 static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
2239 {
2240 b43legacy_phy_lo_mark_all_unused(dev);
2241 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
2242 b43legacy_mac_suspend(dev);
2243 b43legacy_calc_nrssi_slope(dev);
2244 b43legacy_mac_enable(dev);
2245 }
2246 }
2247
2248 static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
2249 {
2250 /* Update device statistics. */
2251 b43legacy_calculate_link_quality(dev);
2252 }
2253
2254 static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
2255 {
2256 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
2257
2258 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2259 wmb();
2260 }
2261
2262 static void do_periodic_work(struct b43legacy_wldev *dev)
2263 {
2264 unsigned int state;
2265
2266 state = dev->periodic_state;
2267 if (state % 8 == 0)
2268 b43legacy_periodic_every120sec(dev);
2269 if (state % 4 == 0)
2270 b43legacy_periodic_every60sec(dev);
2271 if (state % 2 == 0)
2272 b43legacy_periodic_every30sec(dev);
2273 b43legacy_periodic_every15sec(dev);
2274 }
2275
2276 /* Periodic work locking policy:
2277 * The whole periodic work handler is protected by
2278 * wl->mutex. If another lock is needed somewhere in the
2279 * pwork callchain, it's aquired in-place, where it's needed.
2280 */
2281 static void b43legacy_periodic_work_handler(struct work_struct *work)
2282 {
2283 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
2284 periodic_work.work);
2285 struct b43legacy_wl *wl = dev->wl;
2286 unsigned long delay;
2287
2288 mutex_lock(&wl->mutex);
2289
2290 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
2291 goto out;
2292 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
2293 goto out_requeue;
2294
2295 do_periodic_work(dev);
2296
2297 dev->periodic_state++;
2298 out_requeue:
2299 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
2300 delay = msecs_to_jiffies(50);
2301 else
2302 delay = round_jiffies_relative(HZ * 15);
2303 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2304 out:
2305 mutex_unlock(&wl->mutex);
2306 }
2307
2308 static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
2309 {
2310 struct delayed_work *work = &dev->periodic_work;
2311
2312 dev->periodic_state = 0;
2313 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
2314 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2315 }
2316
2317 /* Validate access to the chip (SHM) */
2318 static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
2319 {
2320 u32 value;
2321 u32 shm_backup;
2322
2323 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
2324 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
2325 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2326 0xAA5555AA)
2327 goto error;
2328 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
2329 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2330 0x55AAAA55)
2331 goto error;
2332 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
2333
2334 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2335 if ((value | B43legacy_MACCTL_GMODE) !=
2336 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
2337 goto error;
2338
2339 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2340 if (value)
2341 goto error;
2342
2343 return 0;
2344 error:
2345 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
2346 return -ENODEV;
2347 }
2348
2349 static void b43legacy_security_init(struct b43legacy_wldev *dev)
2350 {
2351 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2352 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2353 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2354 0x0056);
2355 /* KTP is a word address, but we address SHM bytewise.
2356 * So multiply by two.
2357 */
2358 dev->ktp *= 2;
2359 if (dev->dev->id.revision >= 5)
2360 /* Number of RCMTA address slots */
2361 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
2362 dev->max_nr_keys - 8);
2363 }
2364
2365 #ifdef CONFIG_B43LEGACY_HWRNG
2366 static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
2367 {
2368 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
2369 unsigned long flags;
2370
2371 /* Don't take wl->mutex here, as it could deadlock with
2372 * hwrng internal locking. It's not needed to take
2373 * wl->mutex here, anyway. */
2374
2375 spin_lock_irqsave(&wl->irq_lock, flags);
2376 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
2377 spin_unlock_irqrestore(&wl->irq_lock, flags);
2378
2379 return (sizeof(u16));
2380 }
2381 #endif
2382
2383 static void b43legacy_rng_exit(struct b43legacy_wl *wl)
2384 {
2385 #ifdef CONFIG_B43LEGACY_HWRNG
2386 if (wl->rng_initialized)
2387 hwrng_unregister(&wl->rng);
2388 #endif
2389 }
2390
2391 static int b43legacy_rng_init(struct b43legacy_wl *wl)
2392 {
2393 int err = 0;
2394
2395 #ifdef CONFIG_B43LEGACY_HWRNG
2396 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2397 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2398 wl->rng.name = wl->rng_name;
2399 wl->rng.data_read = b43legacy_rng_read;
2400 wl->rng.priv = (unsigned long)wl;
2401 wl->rng_initialized = 1;
2402 err = hwrng_register(&wl->rng);
2403 if (err) {
2404 wl->rng_initialized = 0;
2405 b43legacyerr(wl, "Failed to register the random "
2406 "number generator (%d)\n", err);
2407 }
2408
2409 #endif
2410 return err;
2411 }
2412
2413 static int b43legacy_op_tx(struct ieee80211_hw *hw,
2414 struct sk_buff *skb)
2415 {
2416 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2417 struct b43legacy_wldev *dev = wl->current_dev;
2418 int err = -ENODEV;
2419 unsigned long flags;
2420
2421 if (unlikely(!dev))
2422 goto out;
2423 if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED))
2424 goto out;
2425 /* DMA-TX is done without a global lock. */
2426 if (b43legacy_using_pio(dev)) {
2427 spin_lock_irqsave(&wl->irq_lock, flags);
2428 err = b43legacy_pio_tx(dev, skb);
2429 spin_unlock_irqrestore(&wl->irq_lock, flags);
2430 } else
2431 err = b43legacy_dma_tx(dev, skb);
2432 out:
2433 if (unlikely(err)) {
2434 /* Drop the packet. */
2435 dev_kfree_skb_any(skb);
2436 }
2437 return NETDEV_TX_OK;
2438 }
2439
2440 static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
2441 const struct ieee80211_tx_queue_params *params)
2442 {
2443 return 0;
2444 }
2445
2446 static int b43legacy_op_get_tx_stats(struct ieee80211_hw *hw,
2447 struct ieee80211_tx_queue_stats *stats)
2448 {
2449 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2450 struct b43legacy_wldev *dev = wl->current_dev;
2451 unsigned long flags;
2452 int err = -ENODEV;
2453
2454 if (!dev)
2455 goto out;
2456 spin_lock_irqsave(&wl->irq_lock, flags);
2457 if (likely(b43legacy_status(dev) >= B43legacy_STAT_STARTED)) {
2458 if (b43legacy_using_pio(dev))
2459 b43legacy_pio_get_tx_stats(dev, stats);
2460 else
2461 b43legacy_dma_get_tx_stats(dev, stats);
2462 err = 0;
2463 }
2464 spin_unlock_irqrestore(&wl->irq_lock, flags);
2465 out:
2466 return err;
2467 }
2468
2469 static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
2470 struct ieee80211_low_level_stats *stats)
2471 {
2472 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2473 unsigned long flags;
2474
2475 spin_lock_irqsave(&wl->irq_lock, flags);
2476 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2477 spin_unlock_irqrestore(&wl->irq_lock, flags);
2478
2479 return 0;
2480 }
2481
2482 static const char *phymode_to_string(unsigned int phymode)
2483 {
2484 switch (phymode) {
2485 case B43legacy_PHYMODE_B:
2486 return "B";
2487 case B43legacy_PHYMODE_G:
2488 return "G";
2489 default:
2490 B43legacy_BUG_ON(1);
2491 }
2492 return "";
2493 }
2494
2495 static int find_wldev_for_phymode(struct b43legacy_wl *wl,
2496 unsigned int phymode,
2497 struct b43legacy_wldev **dev,
2498 bool *gmode)
2499 {
2500 struct b43legacy_wldev *d;
2501
2502 list_for_each_entry(d, &wl->devlist, list) {
2503 if (d->phy.possible_phymodes & phymode) {
2504 /* Ok, this device supports the PHY-mode.
2505 * Set the gmode bit. */
2506 *gmode = 1;
2507 *dev = d;
2508
2509 return 0;
2510 }
2511 }
2512
2513 return -ESRCH;
2514 }
2515
2516 static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
2517 {
2518 struct ssb_device *sdev = dev->dev;
2519 u32 tmslow;
2520
2521 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2522 tmslow &= ~B43legacy_TMSLOW_GMODE;
2523 tmslow |= B43legacy_TMSLOW_PHYRESET;
2524 tmslow |= SSB_TMSLOW_FGC;
2525 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2526 msleep(1);
2527
2528 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2529 tmslow &= ~SSB_TMSLOW_FGC;
2530 tmslow |= B43legacy_TMSLOW_PHYRESET;
2531 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2532 msleep(1);
2533 }
2534
2535 /* Expects wl->mutex locked */
2536 static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
2537 unsigned int new_mode)
2538 {
2539 struct b43legacy_wldev *uninitialized_var(up_dev);
2540 struct b43legacy_wldev *down_dev;
2541 int err;
2542 bool gmode = 0;
2543 int prev_status;
2544
2545 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2546 if (err) {
2547 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
2548 phymode_to_string(new_mode));
2549 return err;
2550 }
2551 if ((up_dev == wl->current_dev) &&
2552 (!!wl->current_dev->phy.gmode == !!gmode))
2553 /* This device is already running. */
2554 return 0;
2555 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2556 phymode_to_string(new_mode));
2557 down_dev = wl->current_dev;
2558
2559 prev_status = b43legacy_status(down_dev);
2560 /* Shutdown the currently running core. */
2561 if (prev_status >= B43legacy_STAT_STARTED)
2562 b43legacy_wireless_core_stop(down_dev);
2563 if (prev_status >= B43legacy_STAT_INITIALIZED)
2564 b43legacy_wireless_core_exit(down_dev);
2565
2566 if (down_dev != up_dev)
2567 /* We switch to a different core, so we put PHY into
2568 * RESET on the old core. */
2569 b43legacy_put_phy_into_reset(down_dev);
2570
2571 /* Now start the new core. */
2572 up_dev->phy.gmode = gmode;
2573 if (prev_status >= B43legacy_STAT_INITIALIZED) {
2574 err = b43legacy_wireless_core_init(up_dev);
2575 if (err) {
2576 b43legacyerr(wl, "Fatal: Could not initialize device"
2577 " for newly selected %s-PHY mode\n",
2578 phymode_to_string(new_mode));
2579 goto init_failure;
2580 }
2581 }
2582 if (prev_status >= B43legacy_STAT_STARTED) {
2583 err = b43legacy_wireless_core_start(up_dev);
2584 if (err) {
2585 b43legacyerr(wl, "Fatal: Coult not start device for "
2586 "newly selected %s-PHY mode\n",
2587 phymode_to_string(new_mode));
2588 b43legacy_wireless_core_exit(up_dev);
2589 goto init_failure;
2590 }
2591 }
2592 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
2593
2594 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
2595
2596 wl->current_dev = up_dev;
2597
2598 return 0;
2599 init_failure:
2600 /* Whoops, failed to init the new core. No core is operating now. */
2601 wl->current_dev = NULL;
2602 return err;
2603 }
2604
2605 /* Write the short and long frame retry limit values. */
2606 static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
2607 unsigned int short_retry,
2608 unsigned int long_retry)
2609 {
2610 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
2611 * the chip-internal counter. */
2612 short_retry = min(short_retry, (unsigned int)0xF);
2613 long_retry = min(long_retry, (unsigned int)0xF);
2614
2615 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
2616 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
2617 }
2618
2619 static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
2620 u32 changed)
2621 {
2622 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2623 struct b43legacy_wldev *dev;
2624 struct b43legacy_phy *phy;
2625 struct ieee80211_conf *conf = &hw->conf;
2626 unsigned long flags;
2627 unsigned int new_phymode = 0xFFFF;
2628 int antenna_tx;
2629 int antenna_rx;
2630 int err = 0;
2631
2632 antenna_tx = B43legacy_ANTENNA_DEFAULT;
2633 antenna_rx = B43legacy_ANTENNA_DEFAULT;
2634
2635 mutex_lock(&wl->mutex);
2636 dev = wl->current_dev;
2637 phy = &dev->phy;
2638
2639 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
2640 b43legacy_set_retry_limits(dev,
2641 conf->short_frame_max_tx_count,
2642 conf->long_frame_max_tx_count);
2643 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
2644 if (!changed)
2645 goto out_unlock_mutex;
2646
2647 /* Switch the PHY mode (if necessary). */
2648 switch (conf->channel->band) {
2649 case IEEE80211_BAND_2GHZ:
2650 if (phy->type == B43legacy_PHYTYPE_B)
2651 new_phymode = B43legacy_PHYMODE_B;
2652 else
2653 new_phymode = B43legacy_PHYMODE_G;
2654 break;
2655 default:
2656 B43legacy_WARN_ON(1);
2657 }
2658 err = b43legacy_switch_phymode(wl, new_phymode);
2659 if (err)
2660 goto out_unlock_mutex;
2661
2662 /* Disable IRQs while reconfiguring the device.
2663 * This makes it possible to drop the spinlock throughout
2664 * the reconfiguration process. */
2665 spin_lock_irqsave(&wl->irq_lock, flags);
2666 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2667 spin_unlock_irqrestore(&wl->irq_lock, flags);
2668 goto out_unlock_mutex;
2669 }
2670 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2671 spin_unlock_irqrestore(&wl->irq_lock, flags);
2672 b43legacy_synchronize_irq(dev);
2673
2674 /* Switch to the requested channel.
2675 * The firmware takes care of races with the TX handler. */
2676 if (conf->channel->hw_value != phy->channel)
2677 b43legacy_radio_selectchannel(dev, conf->channel->hw_value, 0);
2678
2679 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2680
2681 /* Adjust the desired TX power level. */
2682 if (conf->power_level != 0) {
2683 if (conf->power_level != phy->power_level) {
2684 phy->power_level = conf->power_level;
2685 b43legacy_phy_xmitpower(dev);
2686 }
2687 }
2688
2689 /* Antennas for RX and management frame TX. */
2690 b43legacy_mgmtframe_txantenna(dev, antenna_tx);
2691
2692 if (wl->radio_enabled != phy->radio_on) {
2693 if (wl->radio_enabled) {
2694 b43legacy_radio_turn_on(dev);
2695 b43legacyinfo(dev->wl, "Radio turned on by software\n");
2696 if (!dev->radio_hw_enable)
2697 b43legacyinfo(dev->wl, "The hardware RF-kill"
2698 " button still turns the radio"
2699 " physically off. Press the"
2700 " button to turn it on.\n");
2701 } else {
2702 b43legacy_radio_turn_off(dev, 0);
2703 b43legacyinfo(dev->wl, "Radio turned off by"
2704 " software\n");
2705 }
2706 }
2707
2708 spin_lock_irqsave(&wl->irq_lock, flags);
2709 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2710 mmiowb();
2711 spin_unlock_irqrestore(&wl->irq_lock, flags);
2712 out_unlock_mutex:
2713 mutex_unlock(&wl->mutex);
2714
2715 return err;
2716 }
2717
2718 static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
2719 {
2720 struct ieee80211_supported_band *sband =
2721 dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2722 struct ieee80211_rate *rate;
2723 int i;
2724 u16 basic, direct, offset, basic_offset, rateptr;
2725
2726 for (i = 0; i < sband->n_bitrates; i++) {
2727 rate = &sband->bitrates[i];
2728
2729 if (b43legacy_is_cck_rate(rate->hw_value)) {
2730 direct = B43legacy_SHM_SH_CCKDIRECT;
2731 basic = B43legacy_SHM_SH_CCKBASIC;
2732 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2733 offset &= 0xF;
2734 } else {
2735 direct = B43legacy_SHM_SH_OFDMDIRECT;
2736 basic = B43legacy_SHM_SH_OFDMBASIC;
2737 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2738 offset &= 0xF;
2739 }
2740
2741 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
2742
2743 if (b43legacy_is_cck_rate(rate->hw_value)) {
2744 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2745 basic_offset &= 0xF;
2746 } else {
2747 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2748 basic_offset &= 0xF;
2749 }
2750
2751 /*
2752 * Get the pointer that we need to point to
2753 * from the direct map
2754 */
2755 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2756 direct + 2 * basic_offset);
2757 /* and write it to the basic map */
2758 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2759 basic + 2 * offset, rateptr);
2760 }
2761 }
2762
2763 static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
2764 struct ieee80211_vif *vif,
2765 struct ieee80211_bss_conf *conf,
2766 u32 changed)
2767 {
2768 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2769 struct b43legacy_wldev *dev;
2770 struct b43legacy_phy *phy;
2771 unsigned long flags;
2772
2773 mutex_lock(&wl->mutex);
2774 B43legacy_WARN_ON(wl->vif != vif);
2775
2776 dev = wl->current_dev;
2777 phy = &dev->phy;
2778
2779 /* Disable IRQs while reconfiguring the device.
2780 * This makes it possible to drop the spinlock throughout
2781 * the reconfiguration process. */
2782 spin_lock_irqsave(&wl->irq_lock, flags);
2783 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2784 spin_unlock_irqrestore(&wl->irq_lock, flags);
2785 goto out_unlock_mutex;
2786 }
2787 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2788
2789 if (changed & BSS_CHANGED_BSSID) {
2790 b43legacy_synchronize_irq(dev);
2791
2792 if (conf->bssid)
2793 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2794 else
2795 memset(wl->bssid, 0, ETH_ALEN);
2796 }
2797
2798 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
2799 if (changed & BSS_CHANGED_BEACON &&
2800 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2801 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2802 b43legacy_update_templates(wl);
2803
2804 if (changed & BSS_CHANGED_BSSID)
2805 b43legacy_write_mac_bssid_templates(dev);
2806 }
2807 spin_unlock_irqrestore(&wl->irq_lock, flags);
2808
2809 b43legacy_mac_suspend(dev);
2810
2811 if (changed & BSS_CHANGED_BEACON_INT &&
2812 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2813 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2814 b43legacy_set_beacon_int(dev, conf->beacon_int);
2815
2816 if (changed & BSS_CHANGED_BASIC_RATES)
2817 b43legacy_update_basic_rates(dev, conf->basic_rates);
2818
2819 if (changed & BSS_CHANGED_ERP_SLOT) {
2820 if (conf->use_short_slot)
2821 b43legacy_short_slot_timing_enable(dev);
2822 else
2823 b43legacy_short_slot_timing_disable(dev);
2824 }
2825
2826 b43legacy_mac_enable(dev);
2827
2828 spin_lock_irqsave(&wl->irq_lock, flags);
2829 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2830 /* XXX: why? */
2831 mmiowb();
2832 spin_unlock_irqrestore(&wl->irq_lock, flags);
2833 out_unlock_mutex:
2834 mutex_unlock(&wl->mutex);
2835 }
2836
2837 static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
2838 unsigned int changed,
2839 unsigned int *fflags,u64 multicast)
2840 {
2841 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2842 struct b43legacy_wldev *dev = wl->current_dev;
2843 unsigned long flags;
2844
2845 if (!dev) {
2846 *fflags = 0;
2847 return;
2848 }
2849
2850 spin_lock_irqsave(&wl->irq_lock, flags);
2851 *fflags &= FIF_PROMISC_IN_BSS |
2852 FIF_ALLMULTI |
2853 FIF_FCSFAIL |
2854 FIF_PLCPFAIL |
2855 FIF_CONTROL |
2856 FIF_OTHER_BSS |
2857 FIF_BCN_PRBRESP_PROMISC;
2858
2859 changed &= FIF_PROMISC_IN_BSS |
2860 FIF_ALLMULTI |
2861 FIF_FCSFAIL |
2862 FIF_PLCPFAIL |
2863 FIF_CONTROL |
2864 FIF_OTHER_BSS |
2865 FIF_BCN_PRBRESP_PROMISC;
2866
2867 wl->filter_flags = *fflags;
2868
2869 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
2870 b43legacy_adjust_opmode(dev);
2871 spin_unlock_irqrestore(&wl->irq_lock, flags);
2872 }
2873
2874 /* Locking: wl->mutex */
2875 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
2876 {
2877 struct b43legacy_wl *wl = dev->wl;
2878 unsigned long flags;
2879
2880 if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
2881 return;
2882
2883 /* Disable and sync interrupts. We must do this before than
2884 * setting the status to INITIALIZED, as the interrupt handler
2885 * won't care about IRQs then. */
2886 spin_lock_irqsave(&wl->irq_lock, flags);
2887 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2888 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
2889 spin_unlock_irqrestore(&wl->irq_lock, flags);
2890 b43legacy_synchronize_irq(dev);
2891
2892 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
2893
2894 mutex_unlock(&wl->mutex);
2895 /* Must unlock as it would otherwise deadlock. No races here.
2896 * Cancel the possibly running self-rearming periodic work. */
2897 cancel_delayed_work_sync(&dev->periodic_work);
2898 mutex_lock(&wl->mutex);
2899
2900 ieee80211_stop_queues(wl->hw); /* FIXME this could cause a deadlock */
2901
2902 b43legacy_mac_suspend(dev);
2903 free_irq(dev->dev->irq, dev);
2904 b43legacydbg(wl, "Wireless interface stopped\n");
2905 }
2906
2907 /* Locking: wl->mutex */
2908 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
2909 {
2910 int err;
2911
2912 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
2913
2914 drain_txstatus_queue(dev);
2915 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
2916 IRQF_SHARED, KBUILD_MODNAME, dev);
2917 if (err) {
2918 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
2919 dev->dev->irq);
2920 goto out;
2921 }
2922 /* We are ready to run. */
2923 b43legacy_set_status(dev, B43legacy_STAT_STARTED);
2924
2925 /* Start data flow (TX/RX) */
2926 b43legacy_mac_enable(dev);
2927 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2928
2929 /* Start maintenance work */
2930 b43legacy_periodic_tasks_setup(dev);
2931
2932 b43legacydbg(dev->wl, "Wireless interface started\n");
2933 out:
2934 return err;
2935 }
2936
2937 /* Get PHY and RADIO versioning numbers */
2938 static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
2939 {
2940 struct b43legacy_phy *phy = &dev->phy;
2941 u32 tmp;
2942 u8 analog_type;
2943 u8 phy_type;
2944 u8 phy_rev;
2945 u16 radio_manuf;
2946 u16 radio_ver;
2947 u16 radio_rev;
2948 int unsupported = 0;
2949
2950 /* Get PHY versioning */
2951 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
2952 analog_type = (tmp & B43legacy_PHYVER_ANALOG)
2953 >> B43legacy_PHYVER_ANALOG_SHIFT;
2954 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
2955 phy_rev = (tmp & B43legacy_PHYVER_VERSION);
2956 switch (phy_type) {
2957 case B43legacy_PHYTYPE_B:
2958 if (phy_rev != 2 && phy_rev != 4
2959 && phy_rev != 6 && phy_rev != 7)
2960 unsupported = 1;
2961 break;
2962 case B43legacy_PHYTYPE_G:
2963 if (phy_rev > 8)
2964 unsupported = 1;
2965 break;
2966 default:
2967 unsupported = 1;
2968 };
2969 if (unsupported) {
2970 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
2971 "(Analog %u, Type %u, Revision %u)\n",
2972 analog_type, phy_type, phy_rev);
2973 return -EOPNOTSUPP;
2974 }
2975 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
2976 analog_type, phy_type, phy_rev);
2977
2978
2979 /* Get RADIO versioning */
2980 if (dev->dev->bus->chip_id == 0x4317) {
2981 if (dev->dev->bus->chip_rev == 0)
2982 tmp = 0x3205017F;
2983 else if (dev->dev->bus->chip_rev == 1)
2984 tmp = 0x4205017F;
2985 else
2986 tmp = 0x5205017F;
2987 } else {
2988 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
2989 B43legacy_RADIOCTL_ID);
2990 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
2991 tmp <<= 16;
2992 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
2993 B43legacy_RADIOCTL_ID);
2994 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
2995 }
2996 radio_manuf = (tmp & 0x00000FFF);
2997 radio_ver = (tmp & 0x0FFFF000) >> 12;
2998 radio_rev = (tmp & 0xF0000000) >> 28;
2999 switch (phy_type) {
3000 case B43legacy_PHYTYPE_B:
3001 if ((radio_ver & 0xFFF0) != 0x2050)
3002 unsupported = 1;
3003 break;
3004 case B43legacy_PHYTYPE_G:
3005 if (radio_ver != 0x2050)
3006 unsupported = 1;
3007 break;
3008 default:
3009 B43legacy_BUG_ON(1);
3010 }
3011 if (unsupported) {
3012 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
3013 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3014 radio_manuf, radio_ver, radio_rev);
3015 return -EOPNOTSUPP;
3016 }
3017 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
3018 " Revision %u\n", radio_manuf, radio_ver, radio_rev);
3019
3020
3021 phy->radio_manuf = radio_manuf;
3022 phy->radio_ver = radio_ver;
3023 phy->radio_rev = radio_rev;
3024
3025 phy->analog = analog_type;
3026 phy->type = phy_type;
3027 phy->rev = phy_rev;
3028
3029 return 0;
3030 }
3031
3032 static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
3033 struct b43legacy_phy *phy)
3034 {
3035 struct b43legacy_lopair *lo;
3036 int i;
3037
3038 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3039 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3040
3041 /* Assume the radio is enabled. If it's not enabled, the state will
3042 * immediately get fixed on the first periodic work run. */
3043 dev->radio_hw_enable = 1;
3044
3045 phy->savedpctlreg = 0xFFFF;
3046 phy->aci_enable = 0;
3047 phy->aci_wlan_automatic = 0;
3048 phy->aci_hw_rssi = 0;
3049
3050 lo = phy->_lo_pairs;
3051 if (lo)
3052 memset(lo, 0, sizeof(struct b43legacy_lopair) *
3053 B43legacy_LO_COUNT);
3054 phy->max_lb_gain = 0;
3055 phy->trsw_rx_gain = 0;
3056
3057 /* Set default attenuation values. */
3058 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3059 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3060 phy->txctl1 = b43legacy_default_txctl1(dev);
3061 phy->txpwr_offset = 0;
3062
3063 /* NRSSI */
3064 phy->nrssislope = 0;
3065 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3066 phy->nrssi[i] = -1000;
3067 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3068 phy->nrssi_lt[i] = i;
3069
3070 phy->lofcal = 0xFFFF;
3071 phy->initval = 0xFFFF;
3072
3073 phy->interfmode = B43legacy_INTERFMODE_NONE;
3074 phy->channel = 0xFF;
3075 }
3076
3077 static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
3078 {
3079 /* Flags */
3080 dev->dfq_valid = 0;
3081
3082 /* Stats */
3083 memset(&dev->stats, 0, sizeof(dev->stats));
3084
3085 setup_struct_phy_for_init(dev, &dev->phy);
3086
3087 /* IRQ related flags */
3088 dev->irq_reason = 0;
3089 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3090 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
3091
3092 dev->mac_suspended = 1;
3093
3094 /* Noise calculation context */
3095 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3096 }
3097
3098 static void b43legacy_imcfglo_timeouts_workaround(struct b43legacy_wldev *dev)
3099 {
3100 #ifdef CONFIG_SSB_DRIVER_PCICORE
3101 struct ssb_bus *bus = dev->dev->bus;
3102 u32 tmp;
3103
3104 if (bus->pcicore.dev &&
3105 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3106 bus->pcicore.dev->id.revision <= 5) {
3107 /* IMCFGLO timeouts workaround. */
3108 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3109 tmp &= ~SSB_IMCFGLO_REQTO;
3110 tmp &= ~SSB_IMCFGLO_SERTO;
3111 switch (bus->bustype) {
3112 case SSB_BUSTYPE_PCI:
3113 case SSB_BUSTYPE_PCMCIA:
3114 tmp |= 0x32;
3115 break;
3116 case SSB_BUSTYPE_SSB:
3117 tmp |= 0x53;
3118 break;
3119 }
3120 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3121 }
3122 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3123 }
3124
3125 static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
3126 bool idle) {
3127 u16 pu_delay = 1050;
3128
3129 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3130 pu_delay = 500;
3131 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3132 pu_delay = max(pu_delay, (u16)2400);
3133
3134 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3135 B43legacy_SHM_SH_SPUWKUP, pu_delay);
3136 }
3137
3138 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3139 static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
3140 {
3141 u16 pretbtt;
3142
3143 /* The time value is in microseconds. */
3144 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
3145 pretbtt = 2;
3146 else
3147 pretbtt = 250;
3148 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3149 B43legacy_SHM_SH_PRETBTT, pretbtt);
3150 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
3151 }
3152
3153 /* Shutdown a wireless core */
3154 /* Locking: wl->mutex */
3155 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
3156 {
3157 struct b43legacy_phy *phy = &dev->phy;
3158 u32 macctl;
3159
3160 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
3161 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
3162 return;
3163 b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
3164
3165 /* Stop the microcode PSM. */
3166 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
3167 macctl &= ~B43legacy_MACCTL_PSM_RUN;
3168 macctl |= B43legacy_MACCTL_PSM_JMP0;
3169 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
3170
3171 b43legacy_leds_exit(dev);
3172 b43legacy_rng_exit(dev->wl);
3173 b43legacy_pio_free(dev);
3174 b43legacy_dma_free(dev);
3175 b43legacy_chip_exit(dev);
3176 b43legacy_radio_turn_off(dev, 1);
3177 b43legacy_switch_analog(dev, 0);
3178 if (phy->dyn_tssi_tbl)
3179 kfree(phy->tssi2dbm);
3180 kfree(phy->lo_control);
3181 phy->lo_control = NULL;
3182 if (dev->wl->current_beacon) {
3183 dev_kfree_skb_any(dev->wl->current_beacon);
3184 dev->wl->current_beacon = NULL;
3185 }
3186
3187 ssb_device_disable(dev->dev, 0);
3188 ssb_bus_may_powerdown(dev->dev->bus);
3189 }
3190
3191 static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
3192 {
3193 struct b43legacy_phy *phy = &dev->phy;
3194 int i;
3195
3196 /* Set default attenuation values. */
3197 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3198 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3199 phy->txctl1 = b43legacy_default_txctl1(dev);
3200 phy->txctl2 = 0xFFFF;
3201 phy->txpwr_offset = 0;
3202
3203 /* NRSSI */
3204 phy->nrssislope = 0;
3205 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3206 phy->nrssi[i] = -1000;
3207 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3208 phy->nrssi_lt[i] = i;
3209
3210 phy->lofcal = 0xFFFF;
3211 phy->initval = 0xFFFF;
3212
3213 phy->aci_enable = 0;
3214 phy->aci_wlan_automatic = 0;
3215 phy->aci_hw_rssi = 0;
3216
3217 phy->antenna_diversity = 0xFFFF;
3218 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3219 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3220
3221 /* Flags */
3222 phy->calibrated = 0;
3223
3224 if (phy->_lo_pairs)
3225 memset(phy->_lo_pairs, 0,
3226 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
3227 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
3228 }
3229
3230 /* Initialize a wireless core */
3231 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
3232 {
3233 struct b43legacy_wl *wl = dev->wl;
3234 struct ssb_bus *bus = dev->dev->bus;
3235 struct b43legacy_phy *phy = &dev->phy;
3236 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3237 int err;
3238 u32 hf;
3239 u32 tmp;
3240
3241 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3242
3243 err = ssb_bus_powerup(bus, 0);
3244 if (err)
3245 goto out;
3246 if (!ssb_device_is_enabled(dev->dev)) {
3247 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
3248 b43legacy_wireless_core_reset(dev, tmp);
3249 }
3250
3251 if ((phy->type == B43legacy_PHYTYPE_B) ||
3252 (phy->type == B43legacy_PHYTYPE_G)) {
3253 phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair)
3254 * B43legacy_LO_COUNT,
3255 GFP_KERNEL);
3256 if (!phy->_lo_pairs)
3257 return -ENOMEM;
3258 }
3259 setup_struct_wldev_for_init(dev);
3260
3261 err = b43legacy_phy_init_tssi2dbm_table(dev);
3262 if (err)
3263 goto err_kfree_lo_control;
3264
3265 /* Enable IRQ routing to this device. */
3266 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3267
3268 b43legacy_imcfglo_timeouts_workaround(dev);
3269 prepare_phy_data_for_init(dev);
3270 b43legacy_phy_calibrate(dev);
3271 err = b43legacy_chip_init(dev);
3272 if (err)
3273 goto err_kfree_tssitbl;
3274 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3275 B43legacy_SHM_SH_WLCOREREV,
3276 dev->dev->id.revision);
3277 hf = b43legacy_hf_read(dev);
3278 if (phy->type == B43legacy_PHYTYPE_G) {
3279 hf |= B43legacy_HF_SYMW;
3280 if (phy->rev == 1)
3281 hf |= B43legacy_HF_GDCW;
3282 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
3283 hf |= B43legacy_HF_OFDMPABOOST;
3284 } else if (phy->type == B43legacy_PHYTYPE_B) {
3285 hf |= B43legacy_HF_SYMW;
3286 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3287 hf &= ~B43legacy_HF_GDCW;
3288 }
3289 b43legacy_hf_write(dev, hf);
3290
3291 b43legacy_set_retry_limits(dev,
3292 B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
3293 B43legacy_DEFAULT_LONG_RETRY_LIMIT);
3294
3295 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3296 0x0044, 3);
3297 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3298 0x0046, 2);
3299
3300 /* Disable sending probe responses from firmware.
3301 * Setting the MaxTime to one usec will always trigger
3302 * a timeout, so we never send any probe resp.
3303 * A timeout of zero is infinite. */
3304 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3305 B43legacy_SHM_SH_PRMAXTIME, 1);
3306
3307 b43legacy_rate_memory_init(dev);
3308
3309 /* Minimum Contention Window */
3310 if (phy->type == B43legacy_PHYTYPE_B)
3311 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3312 0x0003, 31);
3313 else
3314 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3315 0x0003, 15);
3316 /* Maximum Contention Window */
3317 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3318 0x0004, 1023);
3319
3320 do {
3321 if (b43legacy_using_pio(dev))
3322 err = b43legacy_pio_init(dev);
3323 else {
3324 err = b43legacy_dma_init(dev);
3325 if (!err)
3326 b43legacy_qos_init(dev);
3327 }
3328 } while (err == -EAGAIN);
3329 if (err)
3330 goto err_chip_exit;
3331
3332 b43legacy_set_synth_pu_delay(dev, 1);
3333
3334 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3335 b43legacy_upload_card_macaddress(dev);
3336 b43legacy_security_init(dev);
3337 b43legacy_rng_init(wl);
3338
3339 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
3340
3341 b43legacy_leds_init(dev);
3342 out:
3343 return err;
3344
3345 err_chip_exit:
3346 b43legacy_chip_exit(dev);
3347 err_kfree_tssitbl:
3348 if (phy->dyn_tssi_tbl)
3349 kfree(phy->tssi2dbm);
3350 err_kfree_lo_control:
3351 kfree(phy->lo_control);
3352 phy->lo_control = NULL;
3353 ssb_bus_may_powerdown(bus);
3354 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3355 return err;
3356 }
3357
3358 static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
3359 struct ieee80211_if_init_conf *conf)
3360 {
3361 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3362 struct b43legacy_wldev *dev;
3363 unsigned long flags;
3364 int err = -EOPNOTSUPP;
3365
3366 /* TODO: allow WDS/AP devices to coexist */
3367
3368 if (conf->type != NL80211_IFTYPE_AP &&
3369 conf->type != NL80211_IFTYPE_STATION &&
3370 conf->type != NL80211_IFTYPE_WDS &&
3371 conf->type != NL80211_IFTYPE_ADHOC)
3372 return -EOPNOTSUPP;
3373
3374 mutex_lock(&wl->mutex);
3375 if (wl->operating)
3376 goto out_mutex_unlock;
3377
3378 b43legacydbg(wl, "Adding Interface type %d\n", conf->type);
3379
3380 dev = wl->current_dev;
3381 wl->operating = 1;
3382 wl->vif = conf->vif;
3383 wl->if_type = conf->type;
3384 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3385
3386 spin_lock_irqsave(&wl->irq_lock, flags);
3387 b43legacy_adjust_opmode(dev);
3388 b43legacy_set_pretbtt(dev);
3389 b43legacy_set_synth_pu_delay(dev, 0);
3390 b43legacy_upload_card_macaddress(dev);
3391 spin_unlock_irqrestore(&wl->irq_lock, flags);
3392
3393 err = 0;
3394 out_mutex_unlock:
3395 mutex_unlock(&wl->mutex);
3396
3397 return err;
3398 }
3399
3400 static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
3401 struct ieee80211_if_init_conf *conf)
3402 {
3403 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3404 struct b43legacy_wldev *dev = wl->current_dev;
3405 unsigned long flags;
3406
3407 b43legacydbg(wl, "Removing Interface type %d\n", conf->type);
3408
3409 mutex_lock(&wl->mutex);
3410
3411 B43legacy_WARN_ON(!wl->operating);
3412 B43legacy_WARN_ON(wl->vif != conf->vif);
3413 wl->vif = NULL;
3414
3415 wl->operating = 0;
3416
3417 spin_lock_irqsave(&wl->irq_lock, flags);
3418 b43legacy_adjust_opmode(dev);
3419 memset(wl->mac_addr, 0, ETH_ALEN);
3420 b43legacy_upload_card_macaddress(dev);
3421 spin_unlock_irqrestore(&wl->irq_lock, flags);
3422
3423 mutex_unlock(&wl->mutex);
3424 }
3425
3426 static int b43legacy_op_start(struct ieee80211_hw *hw)
3427 {
3428 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3429 struct b43legacy_wldev *dev = wl->current_dev;
3430 int did_init = 0;
3431 int err = 0;
3432
3433 /* Kill all old instance specific information to make sure
3434 * the card won't use it in the short timeframe between start
3435 * and mac80211 reconfiguring it. */
3436 memset(wl->bssid, 0, ETH_ALEN);
3437 memset(wl->mac_addr, 0, ETH_ALEN);
3438 wl->filter_flags = 0;
3439 wl->beacon0_uploaded = 0;
3440 wl->beacon1_uploaded = 0;
3441 wl->beacon_templates_virgin = 1;
3442 wl->radio_enabled = 1;
3443
3444 mutex_lock(&wl->mutex);
3445
3446 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
3447 err = b43legacy_wireless_core_init(dev);
3448 if (err)
3449 goto out_mutex_unlock;
3450 did_init = 1;
3451 }
3452
3453 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
3454 err = b43legacy_wireless_core_start(dev);
3455 if (err) {
3456 if (did_init)
3457 b43legacy_wireless_core_exit(dev);
3458 goto out_mutex_unlock;
3459 }
3460 }
3461
3462 wiphy_rfkill_start_polling(hw->wiphy);
3463
3464 out_mutex_unlock:
3465 mutex_unlock(&wl->mutex);
3466
3467 return err;
3468 }
3469
3470 static void b43legacy_op_stop(struct ieee80211_hw *hw)
3471 {
3472 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3473 struct b43legacy_wldev *dev = wl->current_dev;
3474
3475 cancel_work_sync(&(wl->beacon_update_trigger));
3476
3477 mutex_lock(&wl->mutex);
3478 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
3479 b43legacy_wireless_core_stop(dev);
3480 b43legacy_wireless_core_exit(dev);
3481 wl->radio_enabled = 0;
3482 mutex_unlock(&wl->mutex);
3483 }
3484
3485 static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
3486 struct ieee80211_sta *sta, bool set)
3487 {
3488 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3489 unsigned long flags;
3490
3491 spin_lock_irqsave(&wl->irq_lock, flags);
3492 b43legacy_update_templates(wl);
3493 spin_unlock_irqrestore(&wl->irq_lock, flags);
3494
3495 return 0;
3496 }
3497
3498 static const struct ieee80211_ops b43legacy_hw_ops = {
3499 .tx = b43legacy_op_tx,
3500 .conf_tx = b43legacy_op_conf_tx,
3501 .add_interface = b43legacy_op_add_interface,
3502 .remove_interface = b43legacy_op_remove_interface,
3503 .config = b43legacy_op_dev_config,
3504 .bss_info_changed = b43legacy_op_bss_info_changed,
3505 .configure_filter = b43legacy_op_configure_filter,
3506 .get_stats = b43legacy_op_get_stats,
3507 .get_tx_stats = b43legacy_op_get_tx_stats,
3508 .start = b43legacy_op_start,
3509 .stop = b43legacy_op_stop,
3510 .set_tim = b43legacy_op_beacon_set_tim,
3511 .rfkill_poll = b43legacy_rfkill_poll,
3512 };
3513
3514 /* Hard-reset the chip. Do not call this directly.
3515 * Use b43legacy_controller_restart()
3516 */
3517 static void b43legacy_chip_reset(struct work_struct *work)
3518 {
3519 struct b43legacy_wldev *dev =
3520 container_of(work, struct b43legacy_wldev, restart_work);
3521 struct b43legacy_wl *wl = dev->wl;
3522 int err = 0;
3523 int prev_status;
3524
3525 mutex_lock(&wl->mutex);
3526
3527 prev_status = b43legacy_status(dev);
3528 /* Bring the device down... */
3529 if (prev_status >= B43legacy_STAT_STARTED)
3530 b43legacy_wireless_core_stop(dev);
3531 if (prev_status >= B43legacy_STAT_INITIALIZED)
3532 b43legacy_wireless_core_exit(dev);
3533
3534 /* ...and up again. */
3535 if (prev_status >= B43legacy_STAT_INITIALIZED) {
3536 err = b43legacy_wireless_core_init(dev);
3537 if (err)
3538 goto out;
3539 }
3540 if (prev_status >= B43legacy_STAT_STARTED) {
3541 err = b43legacy_wireless_core_start(dev);
3542 if (err) {
3543 b43legacy_wireless_core_exit(dev);
3544 goto out;
3545 }
3546 }
3547 out:
3548 if (err)
3549 wl->current_dev = NULL; /* Failed to init the dev. */
3550 mutex_unlock(&wl->mutex);
3551 if (err)
3552 b43legacyerr(wl, "Controller restart FAILED\n");
3553 else
3554 b43legacyinfo(wl, "Controller restarted\n");
3555 }
3556
3557 static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
3558 int have_bphy,
3559 int have_gphy)
3560 {
3561 struct ieee80211_hw *hw = dev->wl->hw;
3562 struct b43legacy_phy *phy = &dev->phy;
3563
3564 phy->possible_phymodes = 0;
3565 if (have_bphy) {
3566 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3567 &b43legacy_band_2GHz_BPHY;
3568 phy->possible_phymodes |= B43legacy_PHYMODE_B;
3569 }
3570
3571 if (have_gphy) {
3572 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3573 &b43legacy_band_2GHz_GPHY;
3574 phy->possible_phymodes |= B43legacy_PHYMODE_G;
3575 }
3576
3577 return 0;
3578 }
3579
3580 static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
3581 {
3582 /* We release firmware that late to not be required to re-request
3583 * is all the time when we reinit the core. */
3584 b43legacy_release_firmware(dev);
3585 }
3586
3587 static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
3588 {
3589 struct b43legacy_wl *wl = dev->wl;
3590 struct ssb_bus *bus = dev->dev->bus;
3591 struct pci_dev *pdev = bus->host_pci;
3592 int err;
3593 int have_bphy = 0;
3594 int have_gphy = 0;
3595 u32 tmp;
3596
3597 /* Do NOT do any device initialization here.
3598 * Do it in wireless_core_init() instead.
3599 * This function is for gathering basic information about the HW, only.
3600 * Also some structs may be set up here. But most likely you want to
3601 * have that in core_init(), too.
3602 */
3603
3604 err = ssb_bus_powerup(bus, 0);
3605 if (err) {
3606 b43legacyerr(wl, "Bus powerup failed\n");
3607 goto out;
3608 }
3609 /* Get the PHY type. */
3610 if (dev->dev->id.revision >= 5) {
3611 u32 tmshigh;
3612
3613 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3614 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
3615 if (!have_gphy)
3616 have_bphy = 1;
3617 } else if (dev->dev->id.revision == 4)
3618 have_gphy = 1;
3619 else
3620 have_bphy = 1;
3621
3622 dev->phy.gmode = (have_gphy || have_bphy);
3623 dev->phy.radio_on = 1;
3624 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3625 b43legacy_wireless_core_reset(dev, tmp);
3626
3627 err = b43legacy_phy_versioning(dev);
3628 if (err)
3629 goto err_powerdown;
3630 /* Check if this device supports multiband. */
3631 if (!pdev ||
3632 (pdev->device != 0x4312 &&
3633 pdev->device != 0x4319 &&
3634 pdev->device != 0x4324)) {
3635 /* No multiband support. */
3636 have_bphy = 0;
3637 have_gphy = 0;
3638 switch (dev->phy.type) {
3639 case B43legacy_PHYTYPE_B:
3640 have_bphy = 1;
3641 break;
3642 case B43legacy_PHYTYPE_G:
3643 have_gphy = 1;
3644 break;
3645 default:
3646 B43legacy_BUG_ON(1);
3647 }
3648 }
3649 dev->phy.gmode = (have_gphy || have_bphy);
3650 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3651 b43legacy_wireless_core_reset(dev, tmp);
3652
3653 err = b43legacy_validate_chipaccess(dev);
3654 if (err)
3655 goto err_powerdown;
3656 err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
3657 if (err)
3658 goto err_powerdown;
3659
3660 /* Now set some default "current_dev" */
3661 if (!wl->current_dev)
3662 wl->current_dev = dev;
3663 INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
3664
3665 b43legacy_radio_turn_off(dev, 1);
3666 b43legacy_switch_analog(dev, 0);
3667 ssb_device_disable(dev->dev, 0);
3668 ssb_bus_may_powerdown(bus);
3669
3670 out:
3671 return err;
3672
3673 err_powerdown:
3674 ssb_bus_may_powerdown(bus);
3675 return err;
3676 }
3677
3678 static void b43legacy_one_core_detach(struct ssb_device *dev)
3679 {
3680 struct b43legacy_wldev *wldev;
3681 struct b43legacy_wl *wl;
3682
3683 /* Do not cancel ieee80211-workqueue based work here.
3684 * See comment in b43legacy_remove(). */
3685
3686 wldev = ssb_get_drvdata(dev);
3687 wl = wldev->wl;
3688 b43legacy_debugfs_remove_device(wldev);
3689 b43legacy_wireless_core_detach(wldev);
3690 list_del(&wldev->list);
3691 wl->nr_devs--;
3692 ssb_set_drvdata(dev, NULL);
3693 kfree(wldev);
3694 }
3695
3696 static int b43legacy_one_core_attach(struct ssb_device *dev,
3697 struct b43legacy_wl *wl)
3698 {
3699 struct b43legacy_wldev *wldev;
3700 struct pci_dev *pdev;
3701 int err = -ENOMEM;
3702
3703 if (!list_empty(&wl->devlist)) {
3704 /* We are not the first core on this chip. */
3705 pdev = dev->bus->host_pci;
3706 /* Only special chips support more than one wireless
3707 * core, although some of the other chips have more than
3708 * one wireless core as well. Check for this and
3709 * bail out early.
3710 */
3711 if (!pdev ||
3712 ((pdev->device != 0x4321) &&
3713 (pdev->device != 0x4313) &&
3714 (pdev->device != 0x431A))) {
3715 b43legacydbg(wl, "Ignoring unconnected 802.11 core\n");
3716 return -ENODEV;
3717 }
3718 }
3719
3720 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3721 if (!wldev)
3722 goto out;
3723
3724 wldev->dev = dev;
3725 wldev->wl = wl;
3726 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
3727 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3728 tasklet_init(&wldev->isr_tasklet,
3729 (void (*)(unsigned long))b43legacy_interrupt_tasklet,
3730 (unsigned long)wldev);
3731 if (modparam_pio)
3732 wldev->__using_pio = 1;
3733 INIT_LIST_HEAD(&wldev->list);
3734
3735 err = b43legacy_wireless_core_attach(wldev);
3736 if (err)
3737 goto err_kfree_wldev;
3738
3739 list_add(&wldev->list, &wl->devlist);
3740 wl->nr_devs++;
3741 ssb_set_drvdata(dev, wldev);
3742 b43legacy_debugfs_add_device(wldev);
3743 out:
3744 return err;
3745
3746 err_kfree_wldev:
3747 kfree(wldev);
3748 return err;
3749 }
3750
3751 static void b43legacy_sprom_fixup(struct ssb_bus *bus)
3752 {
3753 /* boardflags workarounds */
3754 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3755 bus->boardinfo.type == 0x4E &&
3756 bus->boardinfo.rev > 0x40)
3757 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
3758 }
3759
3760 static void b43legacy_wireless_exit(struct ssb_device *dev,
3761 struct b43legacy_wl *wl)
3762 {
3763 struct ieee80211_hw *hw = wl->hw;
3764
3765 ssb_set_devtypedata(dev, NULL);
3766 ieee80211_free_hw(hw);
3767 }
3768
3769 static int b43legacy_wireless_init(struct ssb_device *dev)
3770 {
3771 struct ssb_sprom *sprom = &dev->bus->sprom;
3772 struct ieee80211_hw *hw;
3773 struct b43legacy_wl *wl;
3774 int err = -ENOMEM;
3775
3776 b43legacy_sprom_fixup(dev->bus);
3777
3778 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
3779 if (!hw) {
3780 b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
3781 goto out;
3782 }
3783
3784 /* fill hw info */
3785 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
3786 IEEE80211_HW_SIGNAL_DBM |
3787 IEEE80211_HW_NOISE_DBM;
3788 hw->wiphy->interface_modes =
3789 BIT(NL80211_IFTYPE_AP) |
3790 BIT(NL80211_IFTYPE_STATION) |
3791 BIT(NL80211_IFTYPE_WDS) |
3792 BIT(NL80211_IFTYPE_ADHOC);
3793 hw->queues = 1; /* FIXME: hardware has more queues */
3794 hw->max_rates = 2;
3795 SET_IEEE80211_DEV(hw, dev->dev);
3796 if (is_valid_ether_addr(sprom->et1mac))
3797 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3798 else
3799 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3800
3801 /* Get and initialize struct b43legacy_wl */
3802 wl = hw_to_b43legacy_wl(hw);
3803 memset(wl, 0, sizeof(*wl));
3804 wl->hw = hw;
3805 spin_lock_init(&wl->irq_lock);
3806 spin_lock_init(&wl->leds_lock);
3807 mutex_init(&wl->mutex);
3808 INIT_LIST_HEAD(&wl->devlist);
3809 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
3810
3811 ssb_set_devtypedata(dev, wl);
3812 b43legacyinfo(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
3813 err = 0;
3814 out:
3815 return err;
3816 }
3817
3818 static int b43legacy_probe(struct ssb_device *dev,
3819 const struct ssb_device_id *id)
3820 {
3821 struct b43legacy_wl *wl;
3822 int err;
3823 int first = 0;
3824
3825 wl = ssb_get_devtypedata(dev);
3826 if (!wl) {
3827 /* Probing the first core - setup common struct b43legacy_wl */
3828 first = 1;
3829 err = b43legacy_wireless_init(dev);
3830 if (err)
3831 goto out;
3832 wl = ssb_get_devtypedata(dev);
3833 B43legacy_WARN_ON(!wl);
3834 }
3835 err = b43legacy_one_core_attach(dev, wl);
3836 if (err)
3837 goto err_wireless_exit;
3838
3839 if (first) {
3840 err = ieee80211_register_hw(wl->hw);
3841 if (err)
3842 goto err_one_core_detach;
3843 }
3844
3845 out:
3846 return err;
3847
3848 err_one_core_detach:
3849 b43legacy_one_core_detach(dev);
3850 err_wireless_exit:
3851 if (first)
3852 b43legacy_wireless_exit(dev, wl);
3853 return err;
3854 }
3855
3856 static void b43legacy_remove(struct ssb_device *dev)
3857 {
3858 struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
3859 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3860
3861 /* We must cancel any work here before unregistering from ieee80211,
3862 * as the ieee80211 unreg will destroy the workqueue. */
3863 cancel_work_sync(&wldev->restart_work);
3864
3865 B43legacy_WARN_ON(!wl);
3866 if (wl->current_dev == wldev)
3867 ieee80211_unregister_hw(wl->hw);
3868
3869 b43legacy_one_core_detach(dev);
3870
3871 if (list_empty(&wl->devlist))
3872 /* Last core on the chip unregistered.
3873 * We can destroy common struct b43legacy_wl.
3874 */
3875 b43legacy_wireless_exit(dev, wl);
3876 }
3877
3878 /* Perform a hardware reset. This can be called from any context. */
3879 void b43legacy_controller_restart(struct b43legacy_wldev *dev,
3880 const char *reason)
3881 {
3882 /* Must avoid requeueing, if we are in shutdown. */
3883 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
3884 return;
3885 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
3886 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
3887 }
3888
3889 #ifdef CONFIG_PM
3890
3891 static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
3892 {
3893 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3894 struct b43legacy_wl *wl = wldev->wl;
3895
3896 b43legacydbg(wl, "Suspending...\n");
3897
3898 mutex_lock(&wl->mutex);
3899 wldev->suspend_init_status = b43legacy_status(wldev);
3900 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
3901 b43legacy_wireless_core_stop(wldev);
3902 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
3903 b43legacy_wireless_core_exit(wldev);
3904 mutex_unlock(&wl->mutex);
3905
3906 b43legacydbg(wl, "Device suspended.\n");
3907
3908 return 0;
3909 }
3910
3911 static int b43legacy_resume(struct ssb_device *dev)
3912 {
3913 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3914 struct b43legacy_wl *wl = wldev->wl;
3915 int err = 0;
3916
3917 b43legacydbg(wl, "Resuming...\n");
3918
3919 mutex_lock(&wl->mutex);
3920 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
3921 err = b43legacy_wireless_core_init(wldev);
3922 if (err) {
3923 b43legacyerr(wl, "Resume failed at core init\n");
3924 goto out;
3925 }
3926 }
3927 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
3928 err = b43legacy_wireless_core_start(wldev);
3929 if (err) {
3930 b43legacy_wireless_core_exit(wldev);
3931 b43legacyerr(wl, "Resume failed at core start\n");
3932 goto out;
3933 }
3934 }
3935
3936 b43legacydbg(wl, "Device resumed.\n");
3937 out:
3938 mutex_unlock(&wl->mutex);
3939 return err;
3940 }
3941
3942 #else /* CONFIG_PM */
3943 # define b43legacy_suspend NULL
3944 # define b43legacy_resume NULL
3945 #endif /* CONFIG_PM */
3946
3947 static struct ssb_driver b43legacy_ssb_driver = {
3948 .name = KBUILD_MODNAME,
3949 .id_table = b43legacy_ssb_tbl,
3950 .probe = b43legacy_probe,
3951 .remove = b43legacy_remove,
3952 .suspend = b43legacy_suspend,
3953 .resume = b43legacy_resume,
3954 };
3955
3956 static void b43legacy_print_driverinfo(void)
3957 {
3958 const char *feat_pci = "", *feat_leds = "", *feat_rfkill = "",
3959 *feat_pio = "", *feat_dma = "";
3960
3961 #ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
3962 feat_pci = "P";
3963 #endif
3964 #ifdef CONFIG_B43LEGACY_LEDS
3965 feat_leds = "L";
3966 #endif
3967 #ifdef CONFIG_B43LEGACY_RFKILL
3968 feat_rfkill = "R";
3969 #endif
3970 #ifdef CONFIG_B43LEGACY_PIO
3971 feat_pio = "I";
3972 #endif
3973 #ifdef CONFIG_B43LEGACY_DMA
3974 feat_dma = "D";
3975 #endif
3976 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
3977 "[ Features: %s%s%s%s%s, Firmware-ID: "
3978 B43legacy_SUPPORTED_FIRMWARE_ID " ]\n",
3979 feat_pci, feat_leds, feat_rfkill, feat_pio, feat_dma);
3980 }
3981
3982 static int __init b43legacy_init(void)
3983 {
3984 int err;
3985
3986 b43legacy_debugfs_init();
3987
3988 err = ssb_driver_register(&b43legacy_ssb_driver);
3989 if (err)
3990 goto err_dfs_exit;
3991
3992 b43legacy_print_driverinfo();
3993
3994 return err;
3995
3996 err_dfs_exit:
3997 b43legacy_debugfs_exit();
3998 return err;
3999 }
4000
4001 static void __exit b43legacy_exit(void)
4002 {
4003 ssb_driver_unregister(&b43legacy_ssb_driver);
4004 b43legacy_debugfs_exit();
4005 }
4006
4007 module_init(b43legacy_init)
4008 module_exit(b43legacy_exit)
Linux kernel - Deliverables
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