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Revert "Merge branch 'ath6kl-next' of master.kernel.org:/pub/scm/linux/kernel/git...
[linux-2.6/next.git] / drivers / net / wireless / b43legacy / main.c
blobaae8dfcb852e54f54917409949124f9f5befb885
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 <m@bues.ch>
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/workqueue.h>
39 #include <linux/sched.h>
40 #include <linux/skbuff.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/slab.h>
43 #include <net/dst.h>
44 #include <asm/unaligned.h>
45
46 #include "b43legacy.h"
47 #include "main.h"
48 #include "debugfs.h"
49 #include "phy.h"
50 #include "dma.h"
51 #include "pio.h"
52 #include "sysfs.h"
53 #include "xmit.h"
54 #include "radio.h"
55
56
57 MODULE_DESCRIPTION("Broadcom B43legacy wireless driver");
58 MODULE_AUTHOR("Martin Langer");
59 MODULE_AUTHOR("Stefano Brivio");
60 MODULE_AUTHOR("Michael Buesch");
61 MODULE_LICENSE("GPL");
62
63 MODULE_FIRMWARE(B43legacy_SUPPORTED_FIRMWARE_ID);
64 MODULE_FIRMWARE("b43legacy/ucode2.fw");
65 MODULE_FIRMWARE("b43legacy/ucode4.fw");
66
67 #if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
68 static int modparam_pio;
69 module_param_named(pio, modparam_pio, int, 0444);
70 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
71 #elif defined(CONFIG_B43LEGACY_DMA)
72 # define modparam_pio 0
73 #elif defined(CONFIG_B43LEGACY_PIO)
74 # define modparam_pio 1
75 #endif
76
77 static int modparam_bad_frames_preempt;
78 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
79 MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames"
80 " Preemption");
81
82 static char modparam_fwpostfix[16];
83 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
84 MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load.");
85
86 /* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */
87 static const struct ssb_device_id b43legacy_ssb_tbl[] = {
88 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2),
89 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4),
90 SSB_DEVTABLE_END
91 };
92 MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl);
93
94
95 /* Channel and ratetables are shared for all devices.
96 * They can't be const, because ieee80211 puts some precalculated
97 * data in there. This data is the same for all devices, so we don't
98 * get concurrency issues */
99 #define RATETAB_ENT(_rateid, _flags) \
100 { \
101 .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \
102 .hw_value = (_rateid), \
103 .flags = (_flags), \
104 }
105 /*
106 * NOTE: When changing this, sync with xmit.c's
107 * b43legacy_plcp_get_bitrate_idx_* functions!
108 */
109 static struct ieee80211_rate __b43legacy_ratetable[] = {
110 RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0),
111 RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
112 RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
113 RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
114 RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0),
115 RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0),
116 RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0),
117 RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0),
118 RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0),
119 RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0),
120 RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0),
121 RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0),
122 };
123 #define b43legacy_b_ratetable (__b43legacy_ratetable + 0)
124 #define b43legacy_b_ratetable_size 4
125 #define b43legacy_g_ratetable (__b43legacy_ratetable + 0)
126 #define b43legacy_g_ratetable_size 12
127
128 #define CHANTAB_ENT(_chanid, _freq) \
129 { \
130 .center_freq = (_freq), \
131 .hw_value = (_chanid), \
132 }
133 static struct ieee80211_channel b43legacy_bg_chantable[] = {
134 CHANTAB_ENT(1, 2412),
135 CHANTAB_ENT(2, 2417),
136 CHANTAB_ENT(3, 2422),
137 CHANTAB_ENT(4, 2427),
138 CHANTAB_ENT(5, 2432),
139 CHANTAB_ENT(6, 2437),
140 CHANTAB_ENT(7, 2442),
141 CHANTAB_ENT(8, 2447),
142 CHANTAB_ENT(9, 2452),
143 CHANTAB_ENT(10, 2457),
144 CHANTAB_ENT(11, 2462),
145 CHANTAB_ENT(12, 2467),
146 CHANTAB_ENT(13, 2472),
147 CHANTAB_ENT(14, 2484),
148 };
149
150 static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = {
151 .channels = b43legacy_bg_chantable,
152 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
153 .bitrates = b43legacy_b_ratetable,
154 .n_bitrates = b43legacy_b_ratetable_size,
155 };
156
157 static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = {
158 .channels = b43legacy_bg_chantable,
159 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
160 .bitrates = b43legacy_g_ratetable,
161 .n_bitrates = b43legacy_g_ratetable_size,
162 };
163
164 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev);
165 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev);
166 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev);
167 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev);
168
169
170 static int b43legacy_ratelimit(struct b43legacy_wl *wl)
171 {
172 if (!wl || !wl->current_dev)
173 return 1;
174 if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED)
175 return 1;
176 /* We are up and running.
177 * Ratelimit the messages to avoid DoS over the net. */
178 return net_ratelimit();
179 }
180
181 void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...)
182 {
183 struct va_format vaf;
184 va_list args;
185
186 if (!b43legacy_ratelimit(wl))
187 return;
188
189 va_start(args, fmt);
190
191 vaf.fmt = fmt;
192 vaf.va = &args;
193
194 printk(KERN_INFO "b43legacy-%s: %pV",
195 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
196
197 va_end(args);
198 }
199
200 void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...)
201 {
202 struct va_format vaf;
203 va_list args;
204
205 if (!b43legacy_ratelimit(wl))
206 return;
207
208 va_start(args, fmt);
209
210 vaf.fmt = fmt;
211 vaf.va = &args;
212
213 printk(KERN_ERR "b43legacy-%s ERROR: %pV",
214 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
215
216 va_end(args);
217 }
218
219 void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...)
220 {
221 struct va_format vaf;
222 va_list args;
223
224 if (!b43legacy_ratelimit(wl))
225 return;
226
227 va_start(args, fmt);
228
229 vaf.fmt = fmt;
230 vaf.va = &args;
231
232 printk(KERN_WARNING "b43legacy-%s warning: %pV",
233 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
234
235 va_end(args);
236 }
237
238 #if B43legacy_DEBUG
239 void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...)
240 {
241 struct va_format vaf;
242 va_list args;
243
244 va_start(args, fmt);
245
246 vaf.fmt = fmt;
247 vaf.va = &args;
248
249 printk(KERN_DEBUG "b43legacy-%s debug: %pV",
250 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
251
252 va_end(args);
253 }
254 #endif /* DEBUG */
255
256 static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset,
257 u32 val)
258 {
259 u32 status;
260
261 B43legacy_WARN_ON(offset % 4 != 0);
262
263 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
264 if (status & B43legacy_MACCTL_BE)
265 val = swab32(val);
266
267 b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset);
268 mmiowb();
269 b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val);
270 }
271
272 static inline
273 void b43legacy_shm_control_word(struct b43legacy_wldev *dev,
274 u16 routing, u16 offset)
275 {
276 u32 control;
277
278 /* "offset" is the WORD offset. */
279
280 control = routing;
281 control <<= 16;
282 control |= offset;
283 b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control);
284 }
285
286 u32 b43legacy_shm_read32(struct b43legacy_wldev *dev,
287 u16 routing, u16 offset)
288 {
289 u32 ret;
290
291 if (routing == B43legacy_SHM_SHARED) {
292 B43legacy_WARN_ON((offset & 0x0001) != 0);
293 if (offset & 0x0003) {
294 /* Unaligned access */
295 b43legacy_shm_control_word(dev, routing, offset >> 2);
296 ret = b43legacy_read16(dev,
297 B43legacy_MMIO_SHM_DATA_UNALIGNED);
298 ret <<= 16;
299 b43legacy_shm_control_word(dev, routing,
300 (offset >> 2) + 1);
301 ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
302
303 return ret;
304 }
305 offset >>= 2;
306 }
307 b43legacy_shm_control_word(dev, routing, offset);
308 ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA);
309
310 return ret;
311 }
312
313 u16 b43legacy_shm_read16(struct b43legacy_wldev *dev,
314 u16 routing, u16 offset)
315 {
316 u16 ret;
317
318 if (routing == B43legacy_SHM_SHARED) {
319 B43legacy_WARN_ON((offset & 0x0001) != 0);
320 if (offset & 0x0003) {
321 /* Unaligned access */
322 b43legacy_shm_control_word(dev, routing, offset >> 2);
323 ret = b43legacy_read16(dev,
324 B43legacy_MMIO_SHM_DATA_UNALIGNED);
325
326 return ret;
327 }
328 offset >>= 2;
329 }
330 b43legacy_shm_control_word(dev, routing, offset);
331 ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
332
333 return ret;
334 }
335
336 void b43legacy_shm_write32(struct b43legacy_wldev *dev,
337 u16 routing, u16 offset,
338 u32 value)
339 {
340 if (routing == B43legacy_SHM_SHARED) {
341 B43legacy_WARN_ON((offset & 0x0001) != 0);
342 if (offset & 0x0003) {
343 /* Unaligned access */
344 b43legacy_shm_control_word(dev, routing, offset >> 2);
345 mmiowb();
346 b43legacy_write16(dev,
347 B43legacy_MMIO_SHM_DATA_UNALIGNED,
348 (value >> 16) & 0xffff);
349 mmiowb();
350 b43legacy_shm_control_word(dev, routing,
351 (offset >> 2) + 1);
352 mmiowb();
353 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA,
354 value & 0xffff);
355 return;
356 }
357 offset >>= 2;
358 }
359 b43legacy_shm_control_word(dev, routing, offset);
360 mmiowb();
361 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value);
362 }
363
364 void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset,
365 u16 value)
366 {
367 if (routing == B43legacy_SHM_SHARED) {
368 B43legacy_WARN_ON((offset & 0x0001) != 0);
369 if (offset & 0x0003) {
370 /* Unaligned access */
371 b43legacy_shm_control_word(dev, routing, offset >> 2);
372 mmiowb();
373 b43legacy_write16(dev,
374 B43legacy_MMIO_SHM_DATA_UNALIGNED,
375 value);
376 return;
377 }
378 offset >>= 2;
379 }
380 b43legacy_shm_control_word(dev, routing, offset);
381 mmiowb();
382 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value);
383 }
384
385 /* Read HostFlags */
386 u32 b43legacy_hf_read(struct b43legacy_wldev *dev)
387 {
388 u32 ret;
389
390 ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
391 B43legacy_SHM_SH_HOSTFHI);
392 ret <<= 16;
393 ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
394 B43legacy_SHM_SH_HOSTFLO);
395
396 return ret;
397 }
398
399 /* Write HostFlags */
400 void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value)
401 {
402 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
403 B43legacy_SHM_SH_HOSTFLO,
404 (value & 0x0000FFFF));
405 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
406 B43legacy_SHM_SH_HOSTFHI,
407 ((value & 0xFFFF0000) >> 16));
408 }
409
410 void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf)
411 {
412 /* We need to be careful. As we read the TSF from multiple
413 * registers, we should take care of register overflows.
414 * In theory, the whole tsf read process should be atomic.
415 * We try to be atomic here, by restaring the read process,
416 * if any of the high registers changed (overflew).
417 */
418 if (dev->dev->id.revision >= 3) {
419 u32 low;
420 u32 high;
421 u32 high2;
422
423 do {
424 high = b43legacy_read32(dev,
425 B43legacy_MMIO_REV3PLUS_TSF_HIGH);
426 low = b43legacy_read32(dev,
427 B43legacy_MMIO_REV3PLUS_TSF_LOW);
428 high2 = b43legacy_read32(dev,
429 B43legacy_MMIO_REV3PLUS_TSF_HIGH);
430 } while (unlikely(high != high2));
431
432 *tsf = high;
433 *tsf <<= 32;
434 *tsf |= low;
435 } else {
436 u64 tmp;
437 u16 v0;
438 u16 v1;
439 u16 v2;
440 u16 v3;
441 u16 test1;
442 u16 test2;
443 u16 test3;
444
445 do {
446 v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
447 v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
448 v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
449 v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0);
450
451 test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
452 test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
453 test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
454 } while (v3 != test3 || v2 != test2 || v1 != test1);
455
456 *tsf = v3;
457 *tsf <<= 48;
458 tmp = v2;
459 tmp <<= 32;
460 *tsf |= tmp;
461 tmp = v1;
462 tmp <<= 16;
463 *tsf |= tmp;
464 *tsf |= v0;
465 }
466 }
467
468 static void b43legacy_time_lock(struct b43legacy_wldev *dev)
469 {
470 u32 status;
471
472 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
473 status |= B43legacy_MACCTL_TBTTHOLD;
474 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
475 mmiowb();
476 }
477
478 static void b43legacy_time_unlock(struct b43legacy_wldev *dev)
479 {
480 u32 status;
481
482 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
483 status &= ~B43legacy_MACCTL_TBTTHOLD;
484 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
485 }
486
487 static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf)
488 {
489 /* Be careful with the in-progress timer.
490 * First zero out the low register, so we have a full
491 * register-overflow duration to complete the operation.
492 */
493 if (dev->dev->id.revision >= 3) {
494 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
495 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
496
497 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0);
498 mmiowb();
499 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH,
500 hi);
501 mmiowb();
502 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW,
503 lo);
504 } else {
505 u16 v0 = (tsf & 0x000000000000FFFFULL);
506 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
507 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
508 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
509
510 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0);
511 mmiowb();
512 b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3);
513 mmiowb();
514 b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2);
515 mmiowb();
516 b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1);
517 mmiowb();
518 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0);
519 }
520 }
521
522 void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf)
523 {
524 b43legacy_time_lock(dev);
525 b43legacy_tsf_write_locked(dev, tsf);
526 b43legacy_time_unlock(dev);
527 }
528
529 static
530 void b43legacy_macfilter_set(struct b43legacy_wldev *dev,
531 u16 offset, const u8 *mac)
532 {
533 static const u8 zero_addr[ETH_ALEN] = { 0 };
534 u16 data;
535
536 if (!mac)
537 mac = zero_addr;
538
539 offset |= 0x0020;
540 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset);
541
542 data = mac[0];
543 data |= mac[1] << 8;
544 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
545 data = mac[2];
546 data |= mac[3] << 8;
547 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
548 data = mac[4];
549 data |= mac[5] << 8;
550 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
551 }
552
553 static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev)
554 {
555 static const u8 zero_addr[ETH_ALEN] = { 0 };
556 const u8 *mac = dev->wl->mac_addr;
557 const u8 *bssid = dev->wl->bssid;
558 u8 mac_bssid[ETH_ALEN * 2];
559 int i;
560 u32 tmp;
561
562 if (!bssid)
563 bssid = zero_addr;
564 if (!mac)
565 mac = zero_addr;
566
567 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid);
568
569 memcpy(mac_bssid, mac, ETH_ALEN);
570 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
571
572 /* Write our MAC address and BSSID to template ram */
573 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
574 tmp = (u32)(mac_bssid[i + 0]);
575 tmp |= (u32)(mac_bssid[i + 1]) << 8;
576 tmp |= (u32)(mac_bssid[i + 2]) << 16;
577 tmp |= (u32)(mac_bssid[i + 3]) << 24;
578 b43legacy_ram_write(dev, 0x20 + i, tmp);
579 b43legacy_ram_write(dev, 0x78 + i, tmp);
580 b43legacy_ram_write(dev, 0x478 + i, tmp);
581 }
582 }
583
584 static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev)
585 {
586 b43legacy_write_mac_bssid_templates(dev);
587 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF,
588 dev->wl->mac_addr);
589 }
590
591 static void b43legacy_set_slot_time(struct b43legacy_wldev *dev,
592 u16 slot_time)
593 {
594 /* slot_time is in usec. */
595 if (dev->phy.type != B43legacy_PHYTYPE_G)
596 return;
597 b43legacy_write16(dev, 0x684, 510 + slot_time);
598 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010,
599 slot_time);
600 }
601
602 static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev)
603 {
604 b43legacy_set_slot_time(dev, 9);
605 }
606
607 static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev)
608 {
609 b43legacy_set_slot_time(dev, 20);
610 }
611
612 /* Synchronize IRQ top- and bottom-half.
613 * IRQs must be masked before calling this.
614 * This must not be called with the irq_lock held.
615 */
616 static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev)
617 {
618 synchronize_irq(dev->dev->irq);
619 tasklet_kill(&dev->isr_tasklet);
620 }
621
622 /* DummyTransmission function, as documented on
623 * http://bcm-specs.sipsolutions.net/DummyTransmission
624 */
625 void b43legacy_dummy_transmission(struct b43legacy_wldev *dev)
626 {
627 struct b43legacy_phy *phy = &dev->phy;
628 unsigned int i;
629 unsigned int max_loop;
630 u16 value;
631 u32 buffer[5] = {
632 0x00000000,
633 0x00D40000,
634 0x00000000,
635 0x01000000,
636 0x00000000,
637 };
638
639 switch (phy->type) {
640 case B43legacy_PHYTYPE_B:
641 case B43legacy_PHYTYPE_G:
642 max_loop = 0xFA;
643 buffer[0] = 0x000B846E;
644 break;
645 default:
646 B43legacy_BUG_ON(1);
647 return;
648 }
649
650 for (i = 0; i < 5; i++)
651 b43legacy_ram_write(dev, i * 4, buffer[i]);
652
653 /* dummy read follows */
654 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
655
656 b43legacy_write16(dev, 0x0568, 0x0000);
657 b43legacy_write16(dev, 0x07C0, 0x0000);
658 b43legacy_write16(dev, 0x050C, 0x0000);
659 b43legacy_write16(dev, 0x0508, 0x0000);
660 b43legacy_write16(dev, 0x050A, 0x0000);
661 b43legacy_write16(dev, 0x054C, 0x0000);
662 b43legacy_write16(dev, 0x056A, 0x0014);
663 b43legacy_write16(dev, 0x0568, 0x0826);
664 b43legacy_write16(dev, 0x0500, 0x0000);
665 b43legacy_write16(dev, 0x0502, 0x0030);
666
667 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
668 b43legacy_radio_write16(dev, 0x0051, 0x0017);
669 for (i = 0x00; i < max_loop; i++) {
670 value = b43legacy_read16(dev, 0x050E);
671 if (value & 0x0080)
672 break;
673 udelay(10);
674 }
675 for (i = 0x00; i < 0x0A; i++) {
676 value = b43legacy_read16(dev, 0x050E);
677 if (value & 0x0400)
678 break;
679 udelay(10);
680 }
681 for (i = 0x00; i < 0x0A; i++) {
682 value = b43legacy_read16(dev, 0x0690);
683 if (!(value & 0x0100))
684 break;
685 udelay(10);
686 }
687 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
688 b43legacy_radio_write16(dev, 0x0051, 0x0037);
689 }
690
691 /* Turn the Analog ON/OFF */
692 static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on)
693 {
694 b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4);
695 }
696
697 void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags)
698 {
699 u32 tmslow;
700 u32 macctl;
701
702 flags |= B43legacy_TMSLOW_PHYCLKEN;
703 flags |= B43legacy_TMSLOW_PHYRESET;
704 ssb_device_enable(dev->dev, flags);
705 msleep(2); /* Wait for the PLL to turn on. */
706
707 /* Now take the PHY out of Reset again */
708 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
709 tmslow |= SSB_TMSLOW_FGC;
710 tmslow &= ~B43legacy_TMSLOW_PHYRESET;
711 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
712 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
713 msleep(1);
714 tmslow &= ~SSB_TMSLOW_FGC;
715 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
716 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
717 msleep(1);
718
719 /* Turn Analog ON */
720 b43legacy_switch_analog(dev, 1);
721
722 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
723 macctl &= ~B43legacy_MACCTL_GMODE;
724 if (flags & B43legacy_TMSLOW_GMODE) {
725 macctl |= B43legacy_MACCTL_GMODE;
726 dev->phy.gmode = 1;
727 } else
728 dev->phy.gmode = 0;
729 macctl |= B43legacy_MACCTL_IHR_ENABLED;
730 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
731 }
732
733 static void handle_irq_transmit_status(struct b43legacy_wldev *dev)
734 {
735 u32 v0;
736 u32 v1;
737 u16 tmp;
738 struct b43legacy_txstatus stat;
739
740 while (1) {
741 v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
742 if (!(v0 & 0x00000001))
743 break;
744 v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
745
746 stat.cookie = (v0 >> 16);
747 stat.seq = (v1 & 0x0000FFFF);
748 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
749 tmp = (v0 & 0x0000FFFF);
750 stat.frame_count = ((tmp & 0xF000) >> 12);
751 stat.rts_count = ((tmp & 0x0F00) >> 8);
752 stat.supp_reason = ((tmp & 0x001C) >> 2);
753 stat.pm_indicated = !!(tmp & 0x0080);
754 stat.intermediate = !!(tmp & 0x0040);
755 stat.for_ampdu = !!(tmp & 0x0020);
756 stat.acked = !!(tmp & 0x0002);
757
758 b43legacy_handle_txstatus(dev, &stat);
759 }
760 }
761
762 static void drain_txstatus_queue(struct b43legacy_wldev *dev)
763 {
764 u32 dummy;
765
766 if (dev->dev->id.revision < 5)
767 return;
768 /* Read all entries from the microcode TXstatus FIFO
769 * and throw them away.
770 */
771 while (1) {
772 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
773 if (!(dummy & 0x00000001))
774 break;
775 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
776 }
777 }
778
779 static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev)
780 {
781 u32 val = 0;
782
783 val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A);
784 val <<= 16;
785 val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408);
786
787 return val;
788 }
789
790 static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi)
791 {
792 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408,
793 (jssi & 0x0000FFFF));
794 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A,
795 (jssi & 0xFFFF0000) >> 16);
796 }
797
798 static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev)
799 {
800 b43legacy_jssi_write(dev, 0x7F7F7F7F);
801 b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
802 b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
803 | B43legacy_MACCMD_BGNOISE);
804 B43legacy_WARN_ON(dev->noisecalc.channel_at_start !=
805 dev->phy.channel);
806 }
807
808 static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev)
809 {
810 /* Top half of Link Quality calculation. */
811
812 if (dev->noisecalc.calculation_running)
813 return;
814 dev->noisecalc.channel_at_start = dev->phy.channel;
815 dev->noisecalc.calculation_running = 1;
816 dev->noisecalc.nr_samples = 0;
817
818 b43legacy_generate_noise_sample(dev);
819 }
820
821 static void handle_irq_noise(struct b43legacy_wldev *dev)
822 {
823 struct b43legacy_phy *phy = &dev->phy;
824 u16 tmp;
825 u8 noise[4];
826 u8 i;
827 u8 j;
828 s32 average;
829
830 /* Bottom half of Link Quality calculation. */
831
832 B43legacy_WARN_ON(!dev->noisecalc.calculation_running);
833 if (dev->noisecalc.channel_at_start != phy->channel)
834 goto drop_calculation;
835 *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev));
836 if (noise[0] == 0x7F || noise[1] == 0x7F ||
837 noise[2] == 0x7F || noise[3] == 0x7F)
838 goto generate_new;
839
840 /* Get the noise samples. */
841 B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8);
842 i = dev->noisecalc.nr_samples;
843 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
844 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
845 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
846 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
847 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
848 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
849 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
850 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
851 dev->noisecalc.nr_samples++;
852 if (dev->noisecalc.nr_samples == 8) {
853 /* Calculate the Link Quality by the noise samples. */
854 average = 0;
855 for (i = 0; i < 8; i++) {
856 for (j = 0; j < 4; j++)
857 average += dev->noisecalc.samples[i][j];
858 }
859 average /= (8 * 4);
860 average *= 125;
861 average += 64;
862 average /= 128;
863 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
864 0x40C);
865 tmp = (tmp / 128) & 0x1F;
866 if (tmp >= 8)
867 average += 2;
868 else
869 average -= 25;
870 if (tmp == 8)
871 average -= 72;
872 else
873 average -= 48;
874
875 dev->stats.link_noise = average;
876 drop_calculation:
877 dev->noisecalc.calculation_running = 0;
878 return;
879 }
880 generate_new:
881 b43legacy_generate_noise_sample(dev);
882 }
883
884 static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev)
885 {
886 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
887 /* TODO: PS TBTT */
888 } else {
889 if (1/*FIXME: the last PSpoll frame was sent successfully */)
890 b43legacy_power_saving_ctl_bits(dev, -1, -1);
891 }
892 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
893 dev->dfq_valid = 1;
894 }
895
896 static void handle_irq_atim_end(struct b43legacy_wldev *dev)
897 {
898 if (dev->dfq_valid) {
899 b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
900 b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
901 | B43legacy_MACCMD_DFQ_VALID);
902 dev->dfq_valid = 0;
903 }
904 }
905
906 static void handle_irq_pmq(struct b43legacy_wldev *dev)
907 {
908 u32 tmp;
909
910 /* TODO: AP mode. */
911
912 while (1) {
913 tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS);
914 if (!(tmp & 0x00000008))
915 break;
916 }
917 /* 16bit write is odd, but correct. */
918 b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002);
919 }
920
921 static void b43legacy_write_template_common(struct b43legacy_wldev *dev,
922 const u8 *data, u16 size,
923 u16 ram_offset,
924 u16 shm_size_offset, u8 rate)
925 {
926 u32 i;
927 u32 tmp;
928 struct b43legacy_plcp_hdr4 plcp;
929
930 plcp.data = 0;
931 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
932 b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
933 ram_offset += sizeof(u32);
934 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
935 * So leave the first two bytes of the next write blank.
936 */
937 tmp = (u32)(data[0]) << 16;
938 tmp |= (u32)(data[1]) << 24;
939 b43legacy_ram_write(dev, ram_offset, tmp);
940 ram_offset += sizeof(u32);
941 for (i = 2; i < size; i += sizeof(u32)) {
942 tmp = (u32)(data[i + 0]);
943 if (i + 1 < size)
944 tmp |= (u32)(data[i + 1]) << 8;
945 if (i + 2 < size)
946 tmp |= (u32)(data[i + 2]) << 16;
947 if (i + 3 < size)
948 tmp |= (u32)(data[i + 3]) << 24;
949 b43legacy_ram_write(dev, ram_offset + i - 2, tmp);
950 }
951 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset,
952 size + sizeof(struct b43legacy_plcp_hdr6));
953 }
954
955 /* Convert a b43legacy antenna number value to the PHY TX control value. */
956 static u16 b43legacy_antenna_to_phyctl(int antenna)
957 {
958 switch (antenna) {
959 case B43legacy_ANTENNA0:
960 return B43legacy_TX4_PHY_ANT0;
961 case B43legacy_ANTENNA1:
962 return B43legacy_TX4_PHY_ANT1;
963 }
964 return B43legacy_TX4_PHY_ANTLAST;
965 }
966
967 static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev,
968 u16 ram_offset,
969 u16 shm_size_offset)
970 {
971
972 unsigned int i, len, variable_len;
973 const struct ieee80211_mgmt *bcn;
974 const u8 *ie;
975 bool tim_found = 0;
976 unsigned int rate;
977 u16 ctl;
978 int antenna;
979 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
980
981 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
982 len = min((size_t)dev->wl->current_beacon->len,
983 0x200 - sizeof(struct b43legacy_plcp_hdr6));
984 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
985
986 b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset,
987 shm_size_offset, rate);
988
989 /* Write the PHY TX control parameters. */
990 antenna = B43legacy_ANTENNA_DEFAULT;
991 antenna = b43legacy_antenna_to_phyctl(antenna);
992 ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
993 B43legacy_SHM_SH_BEACPHYCTL);
994 /* We can't send beacons with short preamble. Would get PHY errors. */
995 ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL;
996 ctl &= ~B43legacy_TX4_PHY_ANT;
997 ctl &= ~B43legacy_TX4_PHY_ENC;
998 ctl |= antenna;
999 ctl |= B43legacy_TX4_PHY_ENC_CCK;
1000 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1001 B43legacy_SHM_SH_BEACPHYCTL, ctl);
1002
1003 /* Find the position of the TIM and the DTIM_period value
1004 * and write them to SHM. */
1005 ie = bcn->u.beacon.variable;
1006 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1007 for (i = 0; i < variable_len - 2; ) {
1008 uint8_t ie_id, ie_len;
1009
1010 ie_id = ie[i];
1011 ie_len = ie[i + 1];
1012 if (ie_id == 5) {
1013 u16 tim_position;
1014 u16 dtim_period;
1015 /* This is the TIM Information Element */
1016
1017 /* Check whether the ie_len is in the beacon data range. */
1018 if (variable_len < ie_len + 2 + i)
1019 break;
1020 /* A valid TIM is at least 4 bytes long. */
1021 if (ie_len < 4)
1022 break;
1023 tim_found = 1;
1024
1025 tim_position = sizeof(struct b43legacy_plcp_hdr6);
1026 tim_position += offsetof(struct ieee80211_mgmt,
1027 u.beacon.variable);
1028 tim_position += i;
1029
1030 dtim_period = ie[i + 3];
1031
1032 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1033 B43legacy_SHM_SH_TIMPOS, tim_position);
1034 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1035 B43legacy_SHM_SH_DTIMP, dtim_period);
1036 break;
1037 }
1038 i += ie_len + 2;
1039 }
1040 if (!tim_found) {
1041 b43legacywarn(dev->wl, "Did not find a valid TIM IE in the "
1042 "beacon template packet. AP or IBSS operation "
1043 "may be broken.\n");
1044 } else
1045 b43legacydbg(dev->wl, "Updated beacon template\n");
1046 }
1047
1048 static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev,
1049 u16 shm_offset, u16 size,
1050 struct ieee80211_rate *rate)
1051 {
1052 struct b43legacy_plcp_hdr4 plcp;
1053 u32 tmp;
1054 __le16 dur;
1055
1056 plcp.data = 0;
1057 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1058 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1059 dev->wl->vif,
1060 size,
1061 rate);
1062 /* Write PLCP in two parts and timing for packet transfer */
1063 tmp = le32_to_cpu(plcp.data);
1064 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset,
1065 tmp & 0xFFFF);
1066 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2,
1067 tmp >> 16);
1068 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6,
1069 le16_to_cpu(dur));
1070 }
1071
1072 /* Instead of using custom probe response template, this function
1073 * just patches custom beacon template by:
1074 * 1) Changing packet type
1075 * 2) Patching duration field
1076 * 3) Stripping TIM
1077 */
1078 static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev,
1079 u16 *dest_size,
1080 struct ieee80211_rate *rate)
1081 {
1082 const u8 *src_data;
1083 u8 *dest_data;
1084 u16 src_size, elem_size, src_pos, dest_pos;
1085 __le16 dur;
1086 struct ieee80211_hdr *hdr;
1087 size_t ie_start;
1088
1089 src_size = dev->wl->current_beacon->len;
1090 src_data = (const u8 *)dev->wl->current_beacon->data;
1091
1092 /* Get the start offset of the variable IEs in the packet. */
1093 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1094 B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt,
1095 u.beacon.variable));
1096
1097 if (B43legacy_WARN_ON(src_size < ie_start))
1098 return NULL;
1099
1100 dest_data = kmalloc(src_size, GFP_ATOMIC);
1101 if (unlikely(!dest_data))
1102 return NULL;
1103
1104 /* Copy the static data and all Information Elements, except the TIM. */
1105 memcpy(dest_data, src_data, ie_start);
1106 src_pos = ie_start;
1107 dest_pos = ie_start;
1108 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1109 elem_size = src_data[src_pos + 1] + 2;
1110 if (src_data[src_pos] == 5) {
1111 /* This is the TIM. */
1112 continue;
1113 }
1114 memcpy(dest_data + dest_pos, src_data + src_pos, elem_size);
1115 dest_pos += elem_size;
1116 }
1117 *dest_size = dest_pos;
1118 hdr = (struct ieee80211_hdr *)dest_data;
1119
1120 /* Set the frame control. */
1121 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1122 IEEE80211_STYPE_PROBE_RESP);
1123 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1124 dev->wl->vif,
1125 *dest_size,
1126 rate);
1127 hdr->duration_id = dur;
1128
1129 return dest_data;
1130 }
1131
1132 static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev,
1133 u16 ram_offset,
1134 u16 shm_size_offset,
1135 struct ieee80211_rate *rate)
1136 {
1137 const u8 *probe_resp_data;
1138 u16 size;
1139
1140 size = dev->wl->current_beacon->len;
1141 probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate);
1142 if (unlikely(!probe_resp_data))
1143 return;
1144
1145 /* Looks like PLCP headers plus packet timings are stored for
1146 * all possible basic rates
1147 */
1148 b43legacy_write_probe_resp_plcp(dev, 0x31A, size,
1149 &b43legacy_b_ratetable[0]);
1150 b43legacy_write_probe_resp_plcp(dev, 0x32C, size,
1151 &b43legacy_b_ratetable[1]);
1152 b43legacy_write_probe_resp_plcp(dev, 0x33E, size,
1153 &b43legacy_b_ratetable[2]);
1154 b43legacy_write_probe_resp_plcp(dev, 0x350, size,
1155 &b43legacy_b_ratetable[3]);
1156
1157 size = min((size_t)size,
1158 0x200 - sizeof(struct b43legacy_plcp_hdr6));
1159 b43legacy_write_template_common(dev, probe_resp_data,
1160 size, ram_offset,
1161 shm_size_offset, rate->hw_value);
1162 kfree(probe_resp_data);
1163 }
1164
1165 static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev)
1166 {
1167 struct b43legacy_wl *wl = dev->wl;
1168
1169 if (wl->beacon0_uploaded)
1170 return;
1171 b43legacy_write_beacon_template(dev, 0x68, 0x18);
1172 /* FIXME: Probe resp upload doesn't really belong here,
1173 * but we don't use that feature anyway. */
1174 b43legacy_write_probe_resp_template(dev, 0x268, 0x4A,
1175 &__b43legacy_ratetable[3]);
1176 wl->beacon0_uploaded = 1;
1177 }
1178
1179 static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev)
1180 {
1181 struct b43legacy_wl *wl = dev->wl;
1182
1183 if (wl->beacon1_uploaded)
1184 return;
1185 b43legacy_write_beacon_template(dev, 0x468, 0x1A);
1186 wl->beacon1_uploaded = 1;
1187 }
1188
1189 static void handle_irq_beacon(struct b43legacy_wldev *dev)
1190 {
1191 struct b43legacy_wl *wl = dev->wl;
1192 u32 cmd, beacon0_valid, beacon1_valid;
1193
1194 if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
1195 return;
1196
1197 /* This is the bottom half of the asynchronous beacon update. */
1198
1199 /* Ignore interrupt in the future. */
1200 dev->irq_mask &= ~B43legacy_IRQ_BEACON;
1201
1202 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1203 beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID);
1204 beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID);
1205
1206 /* Schedule interrupt manually, if busy. */
1207 if (beacon0_valid && beacon1_valid) {
1208 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON);
1209 dev->irq_mask |= B43legacy_IRQ_BEACON;
1210 return;
1211 }
1212
1213 if (unlikely(wl->beacon_templates_virgin)) {
1214 /* We never uploaded a beacon before.
1215 * Upload both templates now, but only mark one valid. */
1216 wl->beacon_templates_virgin = 0;
1217 b43legacy_upload_beacon0(dev);
1218 b43legacy_upload_beacon1(dev);
1219 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1220 cmd |= B43legacy_MACCMD_BEACON0_VALID;
1221 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1222 } else {
1223 if (!beacon0_valid) {
1224 b43legacy_upload_beacon0(dev);
1225 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1226 cmd |= B43legacy_MACCMD_BEACON0_VALID;
1227 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1228 } else if (!beacon1_valid) {
1229 b43legacy_upload_beacon1(dev);
1230 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1231 cmd |= B43legacy_MACCMD_BEACON1_VALID;
1232 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1233 }
1234 }
1235 }
1236
1237 static void b43legacy_beacon_update_trigger_work(struct work_struct *work)
1238 {
1239 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
1240 beacon_update_trigger);
1241 struct b43legacy_wldev *dev;
1242
1243 mutex_lock(&wl->mutex);
1244 dev = wl->current_dev;
1245 if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) {
1246 spin_lock_irq(&wl->irq_lock);
1247 /* Update beacon right away or defer to IRQ. */
1248 handle_irq_beacon(dev);
1249 /* The handler might have updated the IRQ mask. */
1250 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1251 dev->irq_mask);
1252 mmiowb();
1253 spin_unlock_irq(&wl->irq_lock);
1254 }
1255 mutex_unlock(&wl->mutex);
1256 }
1257
1258 /* Asynchronously update the packet templates in template RAM.
1259 * Locking: Requires wl->irq_lock to be locked. */
1260 static void b43legacy_update_templates(struct b43legacy_wl *wl)
1261 {
1262 struct sk_buff *beacon;
1263 /* This is the top half of the ansynchronous beacon update. The bottom
1264 * half is the beacon IRQ. Beacon update must be asynchronous to avoid
1265 * sending an invalid beacon. This can happen for example, if the
1266 * firmware transmits a beacon while we are updating it. */
1267
1268 /* We could modify the existing beacon and set the aid bit in the TIM
1269 * field, but that would probably require resizing and moving of data
1270 * within the beacon template. Simply request a new beacon and let
1271 * mac80211 do the hard work. */
1272 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1273 if (unlikely(!beacon))
1274 return;
1275
1276 if (wl->current_beacon)
1277 dev_kfree_skb_any(wl->current_beacon);
1278 wl->current_beacon = beacon;
1279 wl->beacon0_uploaded = 0;
1280 wl->beacon1_uploaded = 0;
1281 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1282 }
1283
1284 static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev,
1285 u16 beacon_int)
1286 {
1287 b43legacy_time_lock(dev);
1288 if (dev->dev->id.revision >= 3) {
1289 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP,
1290 (beacon_int << 16));
1291 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START,
1292 (beacon_int << 10));
1293 } else {
1294 b43legacy_write16(dev, 0x606, (beacon_int >> 6));
1295 b43legacy_write16(dev, 0x610, beacon_int);
1296 }
1297 b43legacy_time_unlock(dev);
1298 b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1299 }
1300
1301 static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
1302 {
1303 }
1304
1305 /* Interrupt handler bottom-half */
1306 static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev)
1307 {
1308 u32 reason;
1309 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1310 u32 merged_dma_reason = 0;
1311 int i;
1312 unsigned long flags;
1313
1314 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1315
1316 B43legacy_WARN_ON(b43legacy_status(dev) <
1317 B43legacy_STAT_INITIALIZED);
1318
1319 reason = dev->irq_reason;
1320 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1321 dma_reason[i] = dev->dma_reason[i];
1322 merged_dma_reason |= dma_reason[i];
1323 }
1324
1325 if (unlikely(reason & B43legacy_IRQ_MAC_TXERR))
1326 b43legacyerr(dev->wl, "MAC transmission error\n");
1327
1328 if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) {
1329 b43legacyerr(dev->wl, "PHY transmission error\n");
1330 rmb();
1331 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1332 b43legacyerr(dev->wl, "Too many PHY TX errors, "
1333 "restarting the controller\n");
1334 b43legacy_controller_restart(dev, "PHY TX errors");
1335 }
1336 }
1337
1338 if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK |
1339 B43legacy_DMAIRQ_NONFATALMASK))) {
1340 if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) {
1341 b43legacyerr(dev->wl, "Fatal DMA error: "
1342 "0x%08X, 0x%08X, 0x%08X, "
1343 "0x%08X, 0x%08X, 0x%08X\n",
1344 dma_reason[0], dma_reason[1],
1345 dma_reason[2], dma_reason[3],
1346 dma_reason[4], dma_reason[5]);
1347 b43legacy_controller_restart(dev, "DMA error");
1348 mmiowb();
1349 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1350 return;
1351 }
1352 if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK)
1353 b43legacyerr(dev->wl, "DMA error: "
1354 "0x%08X, 0x%08X, 0x%08X, "
1355 "0x%08X, 0x%08X, 0x%08X\n",
1356 dma_reason[0], dma_reason[1],
1357 dma_reason[2], dma_reason[3],
1358 dma_reason[4], dma_reason[5]);
1359 }
1360
1361 if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG))
1362 handle_irq_ucode_debug(dev);
1363 if (reason & B43legacy_IRQ_TBTT_INDI)
1364 handle_irq_tbtt_indication(dev);
1365 if (reason & B43legacy_IRQ_ATIM_END)
1366 handle_irq_atim_end(dev);
1367 if (reason & B43legacy_IRQ_BEACON)
1368 handle_irq_beacon(dev);
1369 if (reason & B43legacy_IRQ_PMQ)
1370 handle_irq_pmq(dev);
1371 if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK)
1372 ;/*TODO*/
1373 if (reason & B43legacy_IRQ_NOISESAMPLE_OK)
1374 handle_irq_noise(dev);
1375
1376 /* Check the DMA reason registers for received data. */
1377 if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) {
1378 if (b43legacy_using_pio(dev))
1379 b43legacy_pio_rx(dev->pio.queue0);
1380 else
1381 b43legacy_dma_rx(dev->dma.rx_ring0);
1382 }
1383 B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE);
1384 B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE);
1385 if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) {
1386 if (b43legacy_using_pio(dev))
1387 b43legacy_pio_rx(dev->pio.queue3);
1388 else
1389 b43legacy_dma_rx(dev->dma.rx_ring3);
1390 }
1391 B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE);
1392 B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE);
1393
1394 if (reason & B43legacy_IRQ_TX_OK)
1395 handle_irq_transmit_status(dev);
1396
1397 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1398 mmiowb();
1399 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1400 }
1401
1402 static void pio_irq_workaround(struct b43legacy_wldev *dev,
1403 u16 base, int queueidx)
1404 {
1405 u16 rxctl;
1406
1407 rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL);
1408 if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE)
1409 dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE;
1410 else
1411 dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE;
1412 }
1413
1414 static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason)
1415 {
1416 if (b43legacy_using_pio(dev) &&
1417 (dev->dev->id.revision < 3) &&
1418 (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) {
1419 /* Apply a PIO specific workaround to the dma_reasons */
1420 pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0);
1421 pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1);
1422 pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2);
1423 pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3);
1424 }
1425
1426 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason);
1427
1428 b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON,
1429 dev->dma_reason[0]);
1430 b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON,
1431 dev->dma_reason[1]);
1432 b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON,
1433 dev->dma_reason[2]);
1434 b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON,
1435 dev->dma_reason[3]);
1436 b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON,
1437 dev->dma_reason[4]);
1438 b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON,
1439 dev->dma_reason[5]);
1440 }
1441
1442 /* Interrupt handler top-half */
1443 static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id)
1444 {
1445 irqreturn_t ret = IRQ_NONE;
1446 struct b43legacy_wldev *dev = dev_id;
1447 u32 reason;
1448
1449 B43legacy_WARN_ON(!dev);
1450
1451 spin_lock(&dev->wl->irq_lock);
1452
1453 if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED))
1454 /* This can only happen on shared IRQ lines. */
1455 goto out;
1456 reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1457 if (reason == 0xffffffff) /* shared IRQ */
1458 goto out;
1459 ret = IRQ_HANDLED;
1460 reason &= dev->irq_mask;
1461 if (!reason)
1462 goto out;
1463
1464 dev->dma_reason[0] = b43legacy_read32(dev,
1465 B43legacy_MMIO_DMA0_REASON)
1466 & 0x0001DC00;
1467 dev->dma_reason[1] = b43legacy_read32(dev,
1468 B43legacy_MMIO_DMA1_REASON)
1469 & 0x0000DC00;
1470 dev->dma_reason[2] = b43legacy_read32(dev,
1471 B43legacy_MMIO_DMA2_REASON)
1472 & 0x0000DC00;
1473 dev->dma_reason[3] = b43legacy_read32(dev,
1474 B43legacy_MMIO_DMA3_REASON)
1475 & 0x0001DC00;
1476 dev->dma_reason[4] = b43legacy_read32(dev,
1477 B43legacy_MMIO_DMA4_REASON)
1478 & 0x0000DC00;
1479 dev->dma_reason[5] = b43legacy_read32(dev,
1480 B43legacy_MMIO_DMA5_REASON)
1481 & 0x0000DC00;
1482
1483 b43legacy_interrupt_ack(dev, reason);
1484 /* Disable all IRQs. They are enabled again in the bottom half. */
1485 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
1486 /* Save the reason code and call our bottom half. */
1487 dev->irq_reason = reason;
1488 tasklet_schedule(&dev->isr_tasklet);
1489 out:
1490 mmiowb();
1491 spin_unlock(&dev->wl->irq_lock);
1492
1493 return ret;
1494 }
1495
1496 static void b43legacy_release_firmware(struct b43legacy_wldev *dev)
1497 {
1498 release_firmware(dev->fw.ucode);
1499 dev->fw.ucode = NULL;
1500 release_firmware(dev->fw.pcm);
1501 dev->fw.pcm = NULL;
1502 release_firmware(dev->fw.initvals);
1503 dev->fw.initvals = NULL;
1504 release_firmware(dev->fw.initvals_band);
1505 dev->fw.initvals_band = NULL;
1506 }
1507
1508 static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl)
1509 {
1510 b43legacyerr(wl, "You must go to http://linuxwireless.org/en/users/"
1511 "Drivers/b43#devicefirmware "
1512 "and download the correct firmware (version 3).\n");
1513 }
1514
1515 static int do_request_fw(struct b43legacy_wldev *dev,
1516 const char *name,
1517 const struct firmware **fw)
1518 {
1519 char path[sizeof(modparam_fwpostfix) + 32];
1520 struct b43legacy_fw_header *hdr;
1521 u32 size;
1522 int err;
1523
1524 if (!name)
1525 return 0;
1526
1527 snprintf(path, ARRAY_SIZE(path),
1528 "b43legacy%s/%s.fw",
1529 modparam_fwpostfix, name);
1530 err = request_firmware(fw, path, dev->dev->dev);
1531 if (err) {
1532 b43legacyerr(dev->wl, "Firmware file \"%s\" not found "
1533 "or load failed.\n", path);
1534 return err;
1535 }
1536 if ((*fw)->size < sizeof(struct b43legacy_fw_header))
1537 goto err_format;
1538 hdr = (struct b43legacy_fw_header *)((*fw)->data);
1539 switch (hdr->type) {
1540 case B43legacy_FW_TYPE_UCODE:
1541 case B43legacy_FW_TYPE_PCM:
1542 size = be32_to_cpu(hdr->size);
1543 if (size != (*fw)->size - sizeof(struct b43legacy_fw_header))
1544 goto err_format;
1545 /* fallthrough */
1546 case B43legacy_FW_TYPE_IV:
1547 if (hdr->ver != 1)
1548 goto err_format;
1549 break;
1550 default:
1551 goto err_format;
1552 }
1553
1554 return err;
1555
1556 err_format:
1557 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
1558 return -EPROTO;
1559 }
1560
1561 static int b43legacy_request_firmware(struct b43legacy_wldev *dev)
1562 {
1563 struct b43legacy_firmware *fw = &dev->fw;
1564 const u8 rev = dev->dev->id.revision;
1565 const char *filename;
1566 int err;
1567
1568 /* do dummy read */
1569 ssb_read32(dev->dev, SSB_TMSHIGH);
1570 if (!fw->ucode) {
1571 if (rev == 2)
1572 filename = "ucode2";
1573 else if (rev == 4)
1574 filename = "ucode4";
1575 else
1576 filename = "ucode5";
1577 err = do_request_fw(dev, filename, &fw->ucode);
1578 if (err)
1579 goto err_load;
1580 }
1581 if (!fw->pcm) {
1582 if (rev < 5)
1583 filename = "pcm4";
1584 else
1585 filename = "pcm5";
1586 err = do_request_fw(dev, filename, &fw->pcm);
1587 if (err)
1588 goto err_load;
1589 }
1590 if (!fw->initvals) {
1591 switch (dev->phy.type) {
1592 case B43legacy_PHYTYPE_B:
1593 case B43legacy_PHYTYPE_G:
1594 if ((rev >= 5) && (rev <= 10))
1595 filename = "b0g0initvals5";
1596 else if (rev == 2 || rev == 4)
1597 filename = "b0g0initvals2";
1598 else
1599 goto err_no_initvals;
1600 break;
1601 default:
1602 goto err_no_initvals;
1603 }
1604 err = do_request_fw(dev, filename, &fw->initvals);
1605 if (err)
1606 goto err_load;
1607 }
1608 if (!fw->initvals_band) {
1609 switch (dev->phy.type) {
1610 case B43legacy_PHYTYPE_B:
1611 case B43legacy_PHYTYPE_G:
1612 if ((rev >= 5) && (rev <= 10))
1613 filename = "b0g0bsinitvals5";
1614 else if (rev >= 11)
1615 filename = NULL;
1616 else if (rev == 2 || rev == 4)
1617 filename = NULL;
1618 else
1619 goto err_no_initvals;
1620 break;
1621 default:
1622 goto err_no_initvals;
1623 }
1624 err = do_request_fw(dev, filename, &fw->initvals_band);
1625 if (err)
1626 goto err_load;
1627 }
1628
1629 return 0;
1630
1631 err_load:
1632 b43legacy_print_fw_helptext(dev->wl);
1633 goto error;
1634
1635 err_no_initvals:
1636 err = -ENODEV;
1637 b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, "
1638 "core rev %u\n", dev->phy.type, rev);
1639 goto error;
1640
1641 error:
1642 b43legacy_release_firmware(dev);
1643 return err;
1644 }
1645
1646 static int b43legacy_upload_microcode(struct b43legacy_wldev *dev)
1647 {
1648 struct wiphy *wiphy = dev->wl->hw->wiphy;
1649 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1650 const __be32 *data;
1651 unsigned int i;
1652 unsigned int len;
1653 u16 fwrev;
1654 u16 fwpatch;
1655 u16 fwdate;
1656 u16 fwtime;
1657 u32 tmp, macctl;
1658 int err = 0;
1659
1660 /* Jump the microcode PSM to offset 0 */
1661 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1662 B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN);
1663 macctl |= B43legacy_MACCTL_PSM_JMP0;
1664 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1665 /* Zero out all microcode PSM registers and shared memory. */
1666 for (i = 0; i < 64; i++)
1667 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0);
1668 for (i = 0; i < 4096; i += 2)
1669 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0);
1670
1671 /* Upload Microcode. */
1672 data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1673 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1674 b43legacy_shm_control_word(dev,
1675 B43legacy_SHM_UCODE |
1676 B43legacy_SHM_AUTOINC_W,
1677 0x0000);
1678 for (i = 0; i < len; i++) {
1679 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1680 be32_to_cpu(data[i]));
1681 udelay(10);
1682 }
1683
1684 if (dev->fw.pcm) {
1685 /* Upload PCM data. */
1686 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1687 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1688 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA);
1689 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000);
1690 /* No need for autoinc bit in SHM_HW */
1691 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB);
1692 for (i = 0; i < len; i++) {
1693 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1694 be32_to_cpu(data[i]));
1695 udelay(10);
1696 }
1697 }
1698
1699 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1700 B43legacy_IRQ_ALL);
1701
1702 /* Start the microcode PSM */
1703 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1704 macctl &= ~B43legacy_MACCTL_PSM_JMP0;
1705 macctl |= B43legacy_MACCTL_PSM_RUN;
1706 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1707
1708 /* Wait for the microcode to load and respond */
1709 i = 0;
1710 while (1) {
1711 tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1712 if (tmp == B43legacy_IRQ_MAC_SUSPENDED)
1713 break;
1714 i++;
1715 if (i >= B43legacy_IRQWAIT_MAX_RETRIES) {
1716 b43legacyerr(dev->wl, "Microcode not responding\n");
1717 b43legacy_print_fw_helptext(dev->wl);
1718 err = -ENODEV;
1719 goto error;
1720 }
1721 msleep_interruptible(50);
1722 if (signal_pending(current)) {
1723 err = -EINTR;
1724 goto error;
1725 }
1726 }
1727 /* dummy read follows */
1728 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1729
1730 /* Get and check the revisions. */
1731 fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1732 B43legacy_SHM_SH_UCODEREV);
1733 fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1734 B43legacy_SHM_SH_UCODEPATCH);
1735 fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1736 B43legacy_SHM_SH_UCODEDATE);
1737 fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1738 B43legacy_SHM_SH_UCODETIME);
1739
1740 if (fwrev > 0x128) {
1741 b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE."
1742 " Only firmware from binary drivers version 3.x"
1743 " is supported. You must change your firmware"
1744 " files.\n");
1745 b43legacy_print_fw_helptext(dev->wl);
1746 err = -EOPNOTSUPP;
1747 goto error;
1748 }
1749 b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u "
1750 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch,
1751 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1752 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F,
1753 fwtime & 0x1F);
1754
1755 dev->fw.rev = fwrev;
1756 dev->fw.patch = fwpatch;
1757
1758 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
1759 dev->fw.rev, dev->fw.patch);
1760 wiphy->hw_version = dev->dev->id.coreid;
1761
1762 return 0;
1763
1764 error:
1765 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1766 macctl &= ~B43legacy_MACCTL_PSM_RUN;
1767 macctl |= B43legacy_MACCTL_PSM_JMP0;
1768 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1769
1770 return err;
1771 }
1772
1773 static int b43legacy_write_initvals(struct b43legacy_wldev *dev,
1774 const struct b43legacy_iv *ivals,
1775 size_t count,
1776 size_t array_size)
1777 {
1778 const struct b43legacy_iv *iv;
1779 u16 offset;
1780 size_t i;
1781 bool bit32;
1782
1783 BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6);
1784 iv = ivals;
1785 for (i = 0; i < count; i++) {
1786 if (array_size < sizeof(iv->offset_size))
1787 goto err_format;
1788 array_size -= sizeof(iv->offset_size);
1789 offset = be16_to_cpu(iv->offset_size);
1790 bit32 = !!(offset & B43legacy_IV_32BIT);
1791 offset &= B43legacy_IV_OFFSET_MASK;
1792 if (offset >= 0x1000)
1793 goto err_format;
1794 if (bit32) {
1795 u32 value;
1796
1797 if (array_size < sizeof(iv->data.d32))
1798 goto err_format;
1799 array_size -= sizeof(iv->data.d32);
1800
1801 value = get_unaligned_be32(&iv->data.d32);
1802 b43legacy_write32(dev, offset, value);
1803
1804 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1805 sizeof(__be16) +
1806 sizeof(__be32));
1807 } else {
1808 u16 value;
1809
1810 if (array_size < sizeof(iv->data.d16))
1811 goto err_format;
1812 array_size -= sizeof(iv->data.d16);
1813
1814 value = be16_to_cpu(iv->data.d16);
1815 b43legacy_write16(dev, offset, value);
1816
1817 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1818 sizeof(__be16) +
1819 sizeof(__be16));
1820 }
1821 }
1822 if (array_size)
1823 goto err_format;
1824
1825 return 0;
1826
1827 err_format:
1828 b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n");
1829 b43legacy_print_fw_helptext(dev->wl);
1830
1831 return -EPROTO;
1832 }
1833
1834 static int b43legacy_upload_initvals(struct b43legacy_wldev *dev)
1835 {
1836 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1837 const struct b43legacy_fw_header *hdr;
1838 struct b43legacy_firmware *fw = &dev->fw;
1839 const struct b43legacy_iv *ivals;
1840 size_t count;
1841 int err;
1842
1843 hdr = (const struct b43legacy_fw_header *)(fw->initvals->data);
1844 ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len);
1845 count = be32_to_cpu(hdr->size);
1846 err = b43legacy_write_initvals(dev, ivals, count,
1847 fw->initvals->size - hdr_len);
1848 if (err)
1849 goto out;
1850 if (fw->initvals_band) {
1851 hdr = (const struct b43legacy_fw_header *)
1852 (fw->initvals_band->data);
1853 ivals = (const struct b43legacy_iv *)(fw->initvals_band->data
1854 + hdr_len);
1855 count = be32_to_cpu(hdr->size);
1856 err = b43legacy_write_initvals(dev, ivals, count,
1857 fw->initvals_band->size - hdr_len);
1858 if (err)
1859 goto out;
1860 }
1861 out:
1862
1863 return err;
1864 }
1865
1866 /* Initialize the GPIOs
1867 * http://bcm-specs.sipsolutions.net/GPIO
1868 */
1869 static int b43legacy_gpio_init(struct b43legacy_wldev *dev)
1870 {
1871 struct ssb_bus *bus = dev->dev->bus;
1872 struct ssb_device *gpiodev, *pcidev = NULL;
1873 u32 mask;
1874 u32 set;
1875
1876 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1877 b43legacy_read32(dev,
1878 B43legacy_MMIO_MACCTL)
1879 & 0xFFFF3FFF);
1880
1881 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1882 b43legacy_read16(dev,
1883 B43legacy_MMIO_GPIO_MASK)
1884 | 0x000F);
1885
1886 mask = 0x0000001F;
1887 set = 0x0000000F;
1888 if (dev->dev->bus->chip_id == 0x4301) {
1889 mask |= 0x0060;
1890 set |= 0x0060;
1891 }
1892 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) {
1893 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1894 b43legacy_read16(dev,
1895 B43legacy_MMIO_GPIO_MASK)
1896 | 0x0200);
1897 mask |= 0x0200;
1898 set |= 0x0200;
1899 }
1900 if (dev->dev->id.revision >= 2)
1901 mask |= 0x0010; /* FIXME: This is redundant. */
1902
1903 #ifdef CONFIG_SSB_DRIVER_PCICORE
1904 pcidev = bus->pcicore.dev;
1905 #endif
1906 gpiodev = bus->chipco.dev ? : pcidev;
1907 if (!gpiodev)
1908 return 0;
1909 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL,
1910 (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL)
1911 & mask) | set);
1912
1913 return 0;
1914 }
1915
1916 /* Turn off all GPIO stuff. Call this on module unload, for example. */
1917 static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev)
1918 {
1919 struct ssb_bus *bus = dev->dev->bus;
1920 struct ssb_device *gpiodev, *pcidev = NULL;
1921
1922 #ifdef CONFIG_SSB_DRIVER_PCICORE
1923 pcidev = bus->pcicore.dev;
1924 #endif
1925 gpiodev = bus->chipco.dev ? : pcidev;
1926 if (!gpiodev)
1927 return;
1928 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0);
1929 }
1930
1931 /* http://bcm-specs.sipsolutions.net/EnableMac */
1932 void b43legacy_mac_enable(struct b43legacy_wldev *dev)
1933 {
1934 dev->mac_suspended--;
1935 B43legacy_WARN_ON(dev->mac_suspended < 0);
1936 B43legacy_WARN_ON(irqs_disabled());
1937 if (dev->mac_suspended == 0) {
1938 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1939 b43legacy_read32(dev,
1940 B43legacy_MMIO_MACCTL)
1941 | B43legacy_MACCTL_ENABLED);
1942 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1943 B43legacy_IRQ_MAC_SUSPENDED);
1944 /* the next two are dummy reads */
1945 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1946 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1947 b43legacy_power_saving_ctl_bits(dev, -1, -1);
1948
1949 /* Re-enable IRQs. */
1950 spin_lock_irq(&dev->wl->irq_lock);
1951 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1952 dev->irq_mask);
1953 spin_unlock_irq(&dev->wl->irq_lock);
1954 }
1955 }
1956
1957 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
1958 void b43legacy_mac_suspend(struct b43legacy_wldev *dev)
1959 {
1960 int i;
1961 u32 tmp;
1962
1963 might_sleep();
1964 B43legacy_WARN_ON(irqs_disabled());
1965 B43legacy_WARN_ON(dev->mac_suspended < 0);
1966
1967 if (dev->mac_suspended == 0) {
1968 /* Mask IRQs before suspending MAC. Otherwise
1969 * the MAC stays busy and won't suspend. */
1970 spin_lock_irq(&dev->wl->irq_lock);
1971 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
1972 spin_unlock_irq(&dev->wl->irq_lock);
1973 b43legacy_synchronize_irq(dev);
1974
1975 b43legacy_power_saving_ctl_bits(dev, -1, 1);
1976 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1977 b43legacy_read32(dev,
1978 B43legacy_MMIO_MACCTL)
1979 & ~B43legacy_MACCTL_ENABLED);
1980 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1981 for (i = 40; i; i--) {
1982 tmp = b43legacy_read32(dev,
1983 B43legacy_MMIO_GEN_IRQ_REASON);
1984 if (tmp & B43legacy_IRQ_MAC_SUSPENDED)
1985 goto out;
1986 msleep(1);
1987 }
1988 b43legacyerr(dev->wl, "MAC suspend failed\n");
1989 }
1990 out:
1991 dev->mac_suspended++;
1992 }
1993
1994 static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev)
1995 {
1996 struct b43legacy_wl *wl = dev->wl;
1997 u32 ctl;
1998 u16 cfp_pretbtt;
1999
2000 ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2001 /* Reset status to STA infrastructure mode. */
2002 ctl &= ~B43legacy_MACCTL_AP;
2003 ctl &= ~B43legacy_MACCTL_KEEP_CTL;
2004 ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP;
2005 ctl &= ~B43legacy_MACCTL_KEEP_BAD;
2006 ctl &= ~B43legacy_MACCTL_PROMISC;
2007 ctl &= ~B43legacy_MACCTL_BEACPROMISC;
2008 ctl |= B43legacy_MACCTL_INFRA;
2009
2010 if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
2011 ctl |= B43legacy_MACCTL_AP;
2012 else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))
2013 ctl &= ~B43legacy_MACCTL_INFRA;
2014
2015 if (wl->filter_flags & FIF_CONTROL)
2016 ctl |= B43legacy_MACCTL_KEEP_CTL;
2017 if (wl->filter_flags & FIF_FCSFAIL)
2018 ctl |= B43legacy_MACCTL_KEEP_BAD;
2019 if (wl->filter_flags & FIF_PLCPFAIL)
2020 ctl |= B43legacy_MACCTL_KEEP_BADPLCP;
2021 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2022 ctl |= B43legacy_MACCTL_PROMISC;
2023 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2024 ctl |= B43legacy_MACCTL_BEACPROMISC;
2025
2026 /* Workaround: On old hardware the HW-MAC-address-filter
2027 * doesn't work properly, so always run promisc in filter
2028 * it in software. */
2029 if (dev->dev->id.revision <= 4)
2030 ctl |= B43legacy_MACCTL_PROMISC;
2031
2032 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
2033
2034 cfp_pretbtt = 2;
2035 if ((ctl & B43legacy_MACCTL_INFRA) &&
2036 !(ctl & B43legacy_MACCTL_AP)) {
2037 if (dev->dev->bus->chip_id == 0x4306 &&
2038 dev->dev->bus->chip_rev == 3)
2039 cfp_pretbtt = 100;
2040 else
2041 cfp_pretbtt = 50;
2042 }
2043 b43legacy_write16(dev, 0x612, cfp_pretbtt);
2044 }
2045
2046 static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
2047 u16 rate,
2048 int is_ofdm)
2049 {
2050 u16 offset;
2051
2052 if (is_ofdm) {
2053 offset = 0x480;
2054 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2055 } else {
2056 offset = 0x4C0;
2057 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2058 }
2059 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
2060 b43legacy_shm_read16(dev,
2061 B43legacy_SHM_SHARED, offset));
2062 }
2063
2064 static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
2065 {
2066 switch (dev->phy.type) {
2067 case B43legacy_PHYTYPE_G:
2068 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
2069 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
2070 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
2071 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
2072 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
2073 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
2074 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2075 /* fallthrough */
2076 case B43legacy_PHYTYPE_B:
2077 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
2078 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
2079 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
2080 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
2081 break;
2082 default:
2083 B43legacy_BUG_ON(1);
2084 }
2085 }
2086
2087 /* Set the TX-Antenna for management frames sent by firmware. */
2088 static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
2089 int antenna)
2090 {
2091 u16 ant = 0;
2092 u16 tmp;
2093
2094 switch (antenna) {
2095 case B43legacy_ANTENNA0:
2096 ant |= B43legacy_TX4_PHY_ANT0;
2097 break;
2098 case B43legacy_ANTENNA1:
2099 ant |= B43legacy_TX4_PHY_ANT1;
2100 break;
2101 case B43legacy_ANTENNA_AUTO:
2102 ant |= B43legacy_TX4_PHY_ANTLAST;
2103 break;
2104 default:
2105 B43legacy_BUG_ON(1);
2106 }
2107
2108 /* FIXME We also need to set the other flags of the PHY control
2109 * field somewhere. */
2110
2111 /* For Beacons */
2112 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2113 B43legacy_SHM_SH_BEACPHYCTL);
2114 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2115 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2116 B43legacy_SHM_SH_BEACPHYCTL, tmp);
2117 /* For ACK/CTS */
2118 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2119 B43legacy_SHM_SH_ACKCTSPHYCTL);
2120 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2121 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2122 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
2123 /* For Probe Resposes */
2124 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2125 B43legacy_SHM_SH_PRPHYCTL);
2126 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2127 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2128 B43legacy_SHM_SH_PRPHYCTL, tmp);
2129 }
2130
2131 /* This is the opposite of b43legacy_chip_init() */
2132 static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
2133 {
2134 b43legacy_radio_turn_off(dev, 1);
2135 b43legacy_gpio_cleanup(dev);
2136 /* firmware is released later */
2137 }
2138
2139 /* Initialize the chip
2140 * http://bcm-specs.sipsolutions.net/ChipInit
2141 */
2142 static int b43legacy_chip_init(struct b43legacy_wldev *dev)
2143 {
2144 struct b43legacy_phy *phy = &dev->phy;
2145 int err;
2146 int tmp;
2147 u32 value32, macctl;
2148 u16 value16;
2149
2150 /* Initialize the MAC control */
2151 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
2152 if (dev->phy.gmode)
2153 macctl |= B43legacy_MACCTL_GMODE;
2154 macctl |= B43legacy_MACCTL_INFRA;
2155 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
2156
2157 err = b43legacy_request_firmware(dev);
2158 if (err)
2159 goto out;
2160 err = b43legacy_upload_microcode(dev);
2161 if (err)
2162 goto out; /* firmware is released later */
2163
2164 err = b43legacy_gpio_init(dev);
2165 if (err)
2166 goto out; /* firmware is released later */
2167
2168 err = b43legacy_upload_initvals(dev);
2169 if (err)
2170 goto err_gpio_clean;
2171 b43legacy_radio_turn_on(dev);
2172
2173 b43legacy_write16(dev, 0x03E6, 0x0000);
2174 err = b43legacy_phy_init(dev);
2175 if (err)
2176 goto err_radio_off;
2177
2178 /* Select initial Interference Mitigation. */
2179 tmp = phy->interfmode;
2180 phy->interfmode = B43legacy_INTERFMODE_NONE;
2181 b43legacy_radio_set_interference_mitigation(dev, tmp);
2182
2183 b43legacy_phy_set_antenna_diversity(dev);
2184 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
2185
2186 if (phy->type == B43legacy_PHYTYPE_B) {
2187 value16 = b43legacy_read16(dev, 0x005E);
2188 value16 |= 0x0004;
2189 b43legacy_write16(dev, 0x005E, value16);
2190 }
2191 b43legacy_write32(dev, 0x0100, 0x01000000);
2192 if (dev->dev->id.revision < 5)
2193 b43legacy_write32(dev, 0x010C, 0x01000000);
2194
2195 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2196 value32 &= ~B43legacy_MACCTL_INFRA;
2197 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2198 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2199 value32 |= B43legacy_MACCTL_INFRA;
2200 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2201
2202 if (b43legacy_using_pio(dev)) {
2203 b43legacy_write32(dev, 0x0210, 0x00000100);
2204 b43legacy_write32(dev, 0x0230, 0x00000100);
2205 b43legacy_write32(dev, 0x0250, 0x00000100);
2206 b43legacy_write32(dev, 0x0270, 0x00000100);
2207 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
2208 0x0000);
2209 }
2210
2211 /* Probe Response Timeout value */
2212 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2213 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
2214
2215 /* Initially set the wireless operation mode. */
2216 b43legacy_adjust_opmode(dev);
2217
2218 if (dev->dev->id.revision < 3) {
2219 b43legacy_write16(dev, 0x060E, 0x0000);
2220 b43legacy_write16(dev, 0x0610, 0x8000);
2221 b43legacy_write16(dev, 0x0604, 0x0000);
2222 b43legacy_write16(dev, 0x0606, 0x0200);
2223 } else {
2224 b43legacy_write32(dev, 0x0188, 0x80000000);
2225 b43legacy_write32(dev, 0x018C, 0x02000000);
2226 }
2227 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
2228 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2229 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2230 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2231 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2232 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2233 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2234
2235 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2236 value32 |= B43legacy_TMSLOW_MACPHYCLKEN;
2237 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2238
2239 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
2240 dev->dev->bus->chipco.fast_pwrup_delay);
2241
2242 /* PHY TX errors counter. */
2243 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2244
2245 B43legacy_WARN_ON(err != 0);
2246 b43legacydbg(dev->wl, "Chip initialized\n");
2247 out:
2248 return err;
2249
2250 err_radio_off:
2251 b43legacy_radio_turn_off(dev, 1);
2252 err_gpio_clean:
2253 b43legacy_gpio_cleanup(dev);
2254 goto out;
2255 }
2256
2257 static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
2258 {
2259 struct b43legacy_phy *phy = &dev->phy;
2260
2261 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
2262 return;
2263
2264 b43legacy_mac_suspend(dev);
2265 b43legacy_phy_lo_g_measure(dev);
2266 b43legacy_mac_enable(dev);
2267 }
2268
2269 static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
2270 {
2271 b43legacy_phy_lo_mark_all_unused(dev);
2272 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
2273 b43legacy_mac_suspend(dev);
2274 b43legacy_calc_nrssi_slope(dev);
2275 b43legacy_mac_enable(dev);
2276 }
2277 }
2278
2279 static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
2280 {
2281 /* Update device statistics. */
2282 b43legacy_calculate_link_quality(dev);
2283 }
2284
2285 static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
2286 {
2287 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
2288
2289 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2290 wmb();
2291 }
2292
2293 static void do_periodic_work(struct b43legacy_wldev *dev)
2294 {
2295 unsigned int state;
2296
2297 state = dev->periodic_state;
2298 if (state % 8 == 0)
2299 b43legacy_periodic_every120sec(dev);
2300 if (state % 4 == 0)
2301 b43legacy_periodic_every60sec(dev);
2302 if (state % 2 == 0)
2303 b43legacy_periodic_every30sec(dev);
2304 b43legacy_periodic_every15sec(dev);
2305 }
2306
2307 /* Periodic work locking policy:
2308 * The whole periodic work handler is protected by
2309 * wl->mutex. If another lock is needed somewhere in the
2310 * pwork callchain, it's acquired in-place, where it's needed.
2311 */
2312 static void b43legacy_periodic_work_handler(struct work_struct *work)
2313 {
2314 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
2315 periodic_work.work);
2316 struct b43legacy_wl *wl = dev->wl;
2317 unsigned long delay;
2318
2319 mutex_lock(&wl->mutex);
2320
2321 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
2322 goto out;
2323 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
2324 goto out_requeue;
2325
2326 do_periodic_work(dev);
2327
2328 dev->periodic_state++;
2329 out_requeue:
2330 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
2331 delay = msecs_to_jiffies(50);
2332 else
2333 delay = round_jiffies_relative(HZ * 15);
2334 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2335 out:
2336 mutex_unlock(&wl->mutex);
2337 }
2338
2339 static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
2340 {
2341 struct delayed_work *work = &dev->periodic_work;
2342
2343 dev->periodic_state = 0;
2344 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
2345 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2346 }
2347
2348 /* Validate access to the chip (SHM) */
2349 static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
2350 {
2351 u32 value;
2352 u32 shm_backup;
2353
2354 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
2355 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
2356 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2357 0xAA5555AA)
2358 goto error;
2359 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
2360 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2361 0x55AAAA55)
2362 goto error;
2363 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
2364
2365 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2366 if ((value | B43legacy_MACCTL_GMODE) !=
2367 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
2368 goto error;
2369
2370 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2371 if (value)
2372 goto error;
2373
2374 return 0;
2375 error:
2376 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
2377 return -ENODEV;
2378 }
2379
2380 static void b43legacy_security_init(struct b43legacy_wldev *dev)
2381 {
2382 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2383 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2384 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2385 0x0056);
2386 /* KTP is a word address, but we address SHM bytewise.
2387 * So multiply by two.
2388 */
2389 dev->ktp *= 2;
2390 if (dev->dev->id.revision >= 5)
2391 /* Number of RCMTA address slots */
2392 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
2393 dev->max_nr_keys - 8);
2394 }
2395
2396 #ifdef CONFIG_B43LEGACY_HWRNG
2397 static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
2398 {
2399 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
2400 unsigned long flags;
2401
2402 /* Don't take wl->mutex here, as it could deadlock with
2403 * hwrng internal locking. It's not needed to take
2404 * wl->mutex here, anyway. */
2405
2406 spin_lock_irqsave(&wl->irq_lock, flags);
2407 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
2408 spin_unlock_irqrestore(&wl->irq_lock, flags);
2409
2410 return (sizeof(u16));
2411 }
2412 #endif
2413
2414 static void b43legacy_rng_exit(struct b43legacy_wl *wl)
2415 {
2416 #ifdef CONFIG_B43LEGACY_HWRNG
2417 if (wl->rng_initialized)
2418 hwrng_unregister(&wl->rng);
2419 #endif
2420 }
2421
2422 static int b43legacy_rng_init(struct b43legacy_wl *wl)
2423 {
2424 int err = 0;
2425
2426 #ifdef CONFIG_B43LEGACY_HWRNG
2427 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2428 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2429 wl->rng.name = wl->rng_name;
2430 wl->rng.data_read = b43legacy_rng_read;
2431 wl->rng.priv = (unsigned long)wl;
2432 wl->rng_initialized = 1;
2433 err = hwrng_register(&wl->rng);
2434 if (err) {
2435 wl->rng_initialized = 0;
2436 b43legacyerr(wl, "Failed to register the random "
2437 "number generator (%d)\n", err);
2438 }
2439
2440 #endif
2441 return err;
2442 }
2443
2444 static void b43legacy_op_tx(struct ieee80211_hw *hw,
2445 struct sk_buff *skb)
2446 {
2447 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2448 struct b43legacy_wldev *dev = wl->current_dev;
2449 int err = -ENODEV;
2450 unsigned long flags;
2451
2452 if (unlikely(!dev))
2453 goto out;
2454 if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED))
2455 goto out;
2456 /* DMA-TX is done without a global lock. */
2457 if (b43legacy_using_pio(dev)) {
2458 spin_lock_irqsave(&wl->irq_lock, flags);
2459 err = b43legacy_pio_tx(dev, skb);
2460 spin_unlock_irqrestore(&wl->irq_lock, flags);
2461 } else
2462 err = b43legacy_dma_tx(dev, skb);
2463 out:
2464 if (unlikely(err)) {
2465 /* Drop the packet. */
2466 dev_kfree_skb_any(skb);
2467 }
2468 }
2469
2470 static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
2471 const struct ieee80211_tx_queue_params *params)
2472 {
2473 return 0;
2474 }
2475
2476 static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
2477 struct ieee80211_low_level_stats *stats)
2478 {
2479 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2480 unsigned long flags;
2481
2482 spin_lock_irqsave(&wl->irq_lock, flags);
2483 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2484 spin_unlock_irqrestore(&wl->irq_lock, flags);
2485
2486 return 0;
2487 }
2488
2489 static const char *phymode_to_string(unsigned int phymode)
2490 {
2491 switch (phymode) {
2492 case B43legacy_PHYMODE_B:
2493 return "B";
2494 case B43legacy_PHYMODE_G:
2495 return "G";
2496 default:
2497 B43legacy_BUG_ON(1);
2498 }
2499 return "";
2500 }
2501
2502 static int find_wldev_for_phymode(struct b43legacy_wl *wl,
2503 unsigned int phymode,
2504 struct b43legacy_wldev **dev,
2505 bool *gmode)
2506 {
2507 struct b43legacy_wldev *d;
2508
2509 list_for_each_entry(d, &wl->devlist, list) {
2510 if (d->phy.possible_phymodes & phymode) {
2511 /* Ok, this device supports the PHY-mode.
2512 * Set the gmode bit. */
2513 *gmode = 1;
2514 *dev = d;
2515
2516 return 0;
2517 }
2518 }
2519
2520 return -ESRCH;
2521 }
2522
2523 static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
2524 {
2525 struct ssb_device *sdev = dev->dev;
2526 u32 tmslow;
2527
2528 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2529 tmslow &= ~B43legacy_TMSLOW_GMODE;
2530 tmslow |= B43legacy_TMSLOW_PHYRESET;
2531 tmslow |= SSB_TMSLOW_FGC;
2532 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2533 msleep(1);
2534
2535 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2536 tmslow &= ~SSB_TMSLOW_FGC;
2537 tmslow |= B43legacy_TMSLOW_PHYRESET;
2538 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2539 msleep(1);
2540 }
2541
2542 /* Expects wl->mutex locked */
2543 static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
2544 unsigned int new_mode)
2545 {
2546 struct b43legacy_wldev *uninitialized_var(up_dev);
2547 struct b43legacy_wldev *down_dev;
2548 int err;
2549 bool gmode = 0;
2550 int prev_status;
2551
2552 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2553 if (err) {
2554 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
2555 phymode_to_string(new_mode));
2556 return err;
2557 }
2558 if ((up_dev == wl->current_dev) &&
2559 (!!wl->current_dev->phy.gmode == !!gmode))
2560 /* This device is already running. */
2561 return 0;
2562 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2563 phymode_to_string(new_mode));
2564 down_dev = wl->current_dev;
2565
2566 prev_status = b43legacy_status(down_dev);
2567 /* Shutdown the currently running core. */
2568 if (prev_status >= B43legacy_STAT_STARTED)
2569 b43legacy_wireless_core_stop(down_dev);
2570 if (prev_status >= B43legacy_STAT_INITIALIZED)
2571 b43legacy_wireless_core_exit(down_dev);
2572
2573 if (down_dev != up_dev)
2574 /* We switch to a different core, so we put PHY into
2575 * RESET on the old core. */
2576 b43legacy_put_phy_into_reset(down_dev);
2577
2578 /* Now start the new core. */
2579 up_dev->phy.gmode = gmode;
2580 if (prev_status >= B43legacy_STAT_INITIALIZED) {
2581 err = b43legacy_wireless_core_init(up_dev);
2582 if (err) {
2583 b43legacyerr(wl, "Fatal: Could not initialize device"
2584 " for newly selected %s-PHY mode\n",
2585 phymode_to_string(new_mode));
2586 goto init_failure;
2587 }
2588 }
2589 if (prev_status >= B43legacy_STAT_STARTED) {
2590 err = b43legacy_wireless_core_start(up_dev);
2591 if (err) {
2592 b43legacyerr(wl, "Fatal: Coult not start device for "
2593 "newly selected %s-PHY mode\n",
2594 phymode_to_string(new_mode));
2595 b43legacy_wireless_core_exit(up_dev);
2596 goto init_failure;
2597 }
2598 }
2599 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
2600
2601 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
2602
2603 wl->current_dev = up_dev;
2604
2605 return 0;
2606 init_failure:
2607 /* Whoops, failed to init the new core. No core is operating now. */
2608 wl->current_dev = NULL;
2609 return err;
2610 }
2611
2612 /* Write the short and long frame retry limit values. */
2613 static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
2614 unsigned int short_retry,
2615 unsigned int long_retry)
2616 {
2617 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
2618 * the chip-internal counter. */
2619 short_retry = min(short_retry, (unsigned int)0xF);
2620 long_retry = min(long_retry, (unsigned int)0xF);
2621
2622 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
2623 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
2624 }
2625
2626 static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
2627 u32 changed)
2628 {
2629 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2630 struct b43legacy_wldev *dev;
2631 struct b43legacy_phy *phy;
2632 struct ieee80211_conf *conf = &hw->conf;
2633 unsigned long flags;
2634 unsigned int new_phymode = 0xFFFF;
2635 int antenna_tx;
2636 int err = 0;
2637
2638 antenna_tx = B43legacy_ANTENNA_DEFAULT;
2639
2640 mutex_lock(&wl->mutex);
2641 dev = wl->current_dev;
2642 phy = &dev->phy;
2643
2644 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
2645 b43legacy_set_retry_limits(dev,
2646 conf->short_frame_max_tx_count,
2647 conf->long_frame_max_tx_count);
2648 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
2649 if (!changed)
2650 goto out_unlock_mutex;
2651
2652 /* Switch the PHY mode (if necessary). */
2653 switch (conf->channel->band) {
2654 case IEEE80211_BAND_2GHZ:
2655 if (phy->type == B43legacy_PHYTYPE_B)
2656 new_phymode = B43legacy_PHYMODE_B;
2657 else
2658 new_phymode = B43legacy_PHYMODE_G;
2659 break;
2660 default:
2661 B43legacy_WARN_ON(1);
2662 }
2663 err = b43legacy_switch_phymode(wl, new_phymode);
2664 if (err)
2665 goto out_unlock_mutex;
2666
2667 /* Disable IRQs while reconfiguring the device.
2668 * This makes it possible to drop the spinlock throughout
2669 * the reconfiguration process. */
2670 spin_lock_irqsave(&wl->irq_lock, flags);
2671 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2672 spin_unlock_irqrestore(&wl->irq_lock, flags);
2673 goto out_unlock_mutex;
2674 }
2675 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2676 spin_unlock_irqrestore(&wl->irq_lock, flags);
2677 b43legacy_synchronize_irq(dev);
2678
2679 /* Switch to the requested channel.
2680 * The firmware takes care of races with the TX handler. */
2681 if (conf->channel->hw_value != phy->channel)
2682 b43legacy_radio_selectchannel(dev, conf->channel->hw_value, 0);
2683
2684 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
2685
2686 /* Adjust the desired TX power level. */
2687 if (conf->power_level != 0) {
2688 if (conf->power_level != phy->power_level) {
2689 phy->power_level = conf->power_level;
2690 b43legacy_phy_xmitpower(dev);
2691 }
2692 }
2693
2694 /* Antennas for RX and management frame TX. */
2695 b43legacy_mgmtframe_txantenna(dev, antenna_tx);
2696
2697 if (wl->radio_enabled != phy->radio_on) {
2698 if (wl->radio_enabled) {
2699 b43legacy_radio_turn_on(dev);
2700 b43legacyinfo(dev->wl, "Radio turned on by software\n");
2701 if (!dev->radio_hw_enable)
2702 b43legacyinfo(dev->wl, "The hardware RF-kill"
2703 " button still turns the radio"
2704 " physically off. Press the"
2705 " button to turn it on.\n");
2706 } else {
2707 b43legacy_radio_turn_off(dev, 0);
2708 b43legacyinfo(dev->wl, "Radio turned off by"
2709 " software\n");
2710 }
2711 }
2712
2713 spin_lock_irqsave(&wl->irq_lock, flags);
2714 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2715 mmiowb();
2716 spin_unlock_irqrestore(&wl->irq_lock, flags);
2717 out_unlock_mutex:
2718 mutex_unlock(&wl->mutex);
2719
2720 return err;
2721 }
2722
2723 static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
2724 {
2725 struct ieee80211_supported_band *sband =
2726 dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2727 struct ieee80211_rate *rate;
2728 int i;
2729 u16 basic, direct, offset, basic_offset, rateptr;
2730
2731 for (i = 0; i < sband->n_bitrates; i++) {
2732 rate = &sband->bitrates[i];
2733
2734 if (b43legacy_is_cck_rate(rate->hw_value)) {
2735 direct = B43legacy_SHM_SH_CCKDIRECT;
2736 basic = B43legacy_SHM_SH_CCKBASIC;
2737 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2738 offset &= 0xF;
2739 } else {
2740 direct = B43legacy_SHM_SH_OFDMDIRECT;
2741 basic = B43legacy_SHM_SH_OFDMBASIC;
2742 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2743 offset &= 0xF;
2744 }
2745
2746 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
2747
2748 if (b43legacy_is_cck_rate(rate->hw_value)) {
2749 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2750 basic_offset &= 0xF;
2751 } else {
2752 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2753 basic_offset &= 0xF;
2754 }
2755
2756 /*
2757 * Get the pointer that we need to point to
2758 * from the direct map
2759 */
2760 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2761 direct + 2 * basic_offset);
2762 /* and write it to the basic map */
2763 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2764 basic + 2 * offset, rateptr);
2765 }
2766 }
2767
2768 static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
2769 struct ieee80211_vif *vif,
2770 struct ieee80211_bss_conf *conf,
2771 u32 changed)
2772 {
2773 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2774 struct b43legacy_wldev *dev;
2775 unsigned long flags;
2776
2777 mutex_lock(&wl->mutex);
2778 B43legacy_WARN_ON(wl->vif != vif);
2779
2780 dev = wl->current_dev;
2781
2782 /* Disable IRQs while reconfiguring the device.
2783 * This makes it possible to drop the spinlock throughout
2784 * the reconfiguration process. */
2785 spin_lock_irqsave(&wl->irq_lock, flags);
2786 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2787 spin_unlock_irqrestore(&wl->irq_lock, flags);
2788 goto out_unlock_mutex;
2789 }
2790 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2791
2792 if (changed & BSS_CHANGED_BSSID) {
2793 b43legacy_synchronize_irq(dev);
2794
2795 if (conf->bssid)
2796 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2797 else
2798 memset(wl->bssid, 0, ETH_ALEN);
2799 }
2800
2801 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
2802 if (changed & BSS_CHANGED_BEACON &&
2803 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2804 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2805 b43legacy_update_templates(wl);
2806
2807 if (changed & BSS_CHANGED_BSSID)
2808 b43legacy_write_mac_bssid_templates(dev);
2809 }
2810 spin_unlock_irqrestore(&wl->irq_lock, flags);
2811
2812 b43legacy_mac_suspend(dev);
2813
2814 if (changed & BSS_CHANGED_BEACON_INT &&
2815 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2816 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2817 b43legacy_set_beacon_int(dev, conf->beacon_int);
2818
2819 if (changed & BSS_CHANGED_BASIC_RATES)
2820 b43legacy_update_basic_rates(dev, conf->basic_rates);
2821
2822 if (changed & BSS_CHANGED_ERP_SLOT) {
2823 if (conf->use_short_slot)
2824 b43legacy_short_slot_timing_enable(dev);
2825 else
2826 b43legacy_short_slot_timing_disable(dev);
2827 }
2828
2829 b43legacy_mac_enable(dev);
2830
2831 spin_lock_irqsave(&wl->irq_lock, flags);
2832 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2833 /* XXX: why? */
2834 mmiowb();
2835 spin_unlock_irqrestore(&wl->irq_lock, flags);
2836 out_unlock_mutex:
2837 mutex_unlock(&wl->mutex);
2838 }
2839
2840 static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
2841 unsigned int changed,
2842 unsigned int *fflags,u64 multicast)
2843 {
2844 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2845 struct b43legacy_wldev *dev = wl->current_dev;
2846 unsigned long flags;
2847
2848 if (!dev) {
2849 *fflags = 0;
2850 return;
2851 }
2852
2853 spin_lock_irqsave(&wl->irq_lock, flags);
2854 *fflags &= FIF_PROMISC_IN_BSS |
2855 FIF_ALLMULTI |
2856 FIF_FCSFAIL |
2857 FIF_PLCPFAIL |
2858 FIF_CONTROL |
2859 FIF_OTHER_BSS |
2860 FIF_BCN_PRBRESP_PROMISC;
2861
2862 changed &= FIF_PROMISC_IN_BSS |
2863 FIF_ALLMULTI |
2864 FIF_FCSFAIL |
2865 FIF_PLCPFAIL |
2866 FIF_CONTROL |
2867 FIF_OTHER_BSS |
2868 FIF_BCN_PRBRESP_PROMISC;
2869
2870 wl->filter_flags = *fflags;
2871
2872 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
2873 b43legacy_adjust_opmode(dev);
2874 spin_unlock_irqrestore(&wl->irq_lock, flags);
2875 }
2876
2877 /* Locking: wl->mutex */
2878 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
2879 {
2880 struct b43legacy_wl *wl = dev->wl;
2881 unsigned long flags;
2882
2883 if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
2884 return;
2885
2886 /* Disable and sync interrupts. We must do this before than
2887 * setting the status to INITIALIZED, as the interrupt handler
2888 * won't care about IRQs then. */
2889 spin_lock_irqsave(&wl->irq_lock, flags);
2890 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2891 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
2892 spin_unlock_irqrestore(&wl->irq_lock, flags);
2893 b43legacy_synchronize_irq(dev);
2894
2895 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
2896
2897 mutex_unlock(&wl->mutex);
2898 /* Must unlock as it would otherwise deadlock. No races here.
2899 * Cancel the possibly running self-rearming periodic work. */
2900 cancel_delayed_work_sync(&dev->periodic_work);
2901 mutex_lock(&wl->mutex);
2902
2903 ieee80211_stop_queues(wl->hw); /* FIXME this could cause a deadlock */
2904
2905 b43legacy_mac_suspend(dev);
2906 free_irq(dev->dev->irq, dev);
2907 b43legacydbg(wl, "Wireless interface stopped\n");
2908 }
2909
2910 /* Locking: wl->mutex */
2911 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
2912 {
2913 int err;
2914
2915 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
2916
2917 drain_txstatus_queue(dev);
2918 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
2919 IRQF_SHARED, KBUILD_MODNAME, dev);
2920 if (err) {
2921 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
2922 dev->dev->irq);
2923 goto out;
2924 }
2925 /* We are ready to run. */
2926 ieee80211_wake_queues(dev->wl->hw);
2927 b43legacy_set_status(dev, B43legacy_STAT_STARTED);
2928
2929 /* Start data flow (TX/RX) */
2930 b43legacy_mac_enable(dev);
2931 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2932
2933 /* Start maintenance work */
2934 b43legacy_periodic_tasks_setup(dev);
2935
2936 b43legacydbg(dev->wl, "Wireless interface started\n");
2937 out:
2938 return err;
2939 }
2940
2941 /* Get PHY and RADIO versioning numbers */
2942 static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
2943 {
2944 struct b43legacy_phy *phy = &dev->phy;
2945 u32 tmp;
2946 u8 analog_type;
2947 u8 phy_type;
2948 u8 phy_rev;
2949 u16 radio_manuf;
2950 u16 radio_ver;
2951 u16 radio_rev;
2952 int unsupported = 0;
2953
2954 /* Get PHY versioning */
2955 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
2956 analog_type = (tmp & B43legacy_PHYVER_ANALOG)
2957 >> B43legacy_PHYVER_ANALOG_SHIFT;
2958 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
2959 phy_rev = (tmp & B43legacy_PHYVER_VERSION);
2960 switch (phy_type) {
2961 case B43legacy_PHYTYPE_B:
2962 if (phy_rev != 2 && phy_rev != 4
2963 && phy_rev != 6 && phy_rev != 7)
2964 unsupported = 1;
2965 break;
2966 case B43legacy_PHYTYPE_G:
2967 if (phy_rev > 8)
2968 unsupported = 1;
2969 break;
2970 default:
2971 unsupported = 1;
2972 }
2973 if (unsupported) {
2974 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
2975 "(Analog %u, Type %u, Revision %u)\n",
2976 analog_type, phy_type, phy_rev);
2977 return -EOPNOTSUPP;
2978 }
2979 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
2980 analog_type, phy_type, phy_rev);
2981
2982
2983 /* Get RADIO versioning */
2984 if (dev->dev->bus->chip_id == 0x4317) {
2985 if (dev->dev->bus->chip_rev == 0)
2986 tmp = 0x3205017F;
2987 else if (dev->dev->bus->chip_rev == 1)
2988 tmp = 0x4205017F;
2989 else
2990 tmp = 0x5205017F;
2991 } else {
2992 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
2993 B43legacy_RADIOCTL_ID);
2994 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
2995 tmp <<= 16;
2996 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
2997 B43legacy_RADIOCTL_ID);
2998 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
2999 }
3000 radio_manuf = (tmp & 0x00000FFF);
3001 radio_ver = (tmp & 0x0FFFF000) >> 12;
3002 radio_rev = (tmp & 0xF0000000) >> 28;
3003 switch (phy_type) {
3004 case B43legacy_PHYTYPE_B:
3005 if ((radio_ver & 0xFFF0) != 0x2050)
3006 unsupported = 1;
3007 break;
3008 case B43legacy_PHYTYPE_G:
3009 if (radio_ver != 0x2050)
3010 unsupported = 1;
3011 break;
3012 default:
3013 B43legacy_BUG_ON(1);
3014 }
3015 if (unsupported) {
3016 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
3017 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3018 radio_manuf, radio_ver, radio_rev);
3019 return -EOPNOTSUPP;
3020 }
3021 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
3022 " Revision %u\n", radio_manuf, radio_ver, radio_rev);
3023
3024
3025 phy->radio_manuf = radio_manuf;
3026 phy->radio_ver = radio_ver;
3027 phy->radio_rev = radio_rev;
3028
3029 phy->analog = analog_type;
3030 phy->type = phy_type;
3031 phy->rev = phy_rev;
3032
3033 return 0;
3034 }
3035
3036 static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
3037 struct b43legacy_phy *phy)
3038 {
3039 struct b43legacy_lopair *lo;
3040 int i;
3041
3042 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3043 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3044
3045 /* Assume the radio is enabled. If it's not enabled, the state will
3046 * immediately get fixed on the first periodic work run. */
3047 dev->radio_hw_enable = 1;
3048
3049 phy->savedpctlreg = 0xFFFF;
3050 phy->aci_enable = 0;
3051 phy->aci_wlan_automatic = 0;
3052 phy->aci_hw_rssi = 0;
3053
3054 lo = phy->_lo_pairs;
3055 if (lo)
3056 memset(lo, 0, sizeof(struct b43legacy_lopair) *
3057 B43legacy_LO_COUNT);
3058 phy->max_lb_gain = 0;
3059 phy->trsw_rx_gain = 0;
3060
3061 /* Set default attenuation values. */
3062 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3063 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3064 phy->txctl1 = b43legacy_default_txctl1(dev);
3065 phy->txpwr_offset = 0;
3066
3067 /* NRSSI */
3068 phy->nrssislope = 0;
3069 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3070 phy->nrssi[i] = -1000;
3071 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3072 phy->nrssi_lt[i] = i;
3073
3074 phy->lofcal = 0xFFFF;
3075 phy->initval = 0xFFFF;
3076
3077 phy->interfmode = B43legacy_INTERFMODE_NONE;
3078 phy->channel = 0xFF;
3079 }
3080
3081 static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
3082 {
3083 /* Flags */
3084 dev->dfq_valid = 0;
3085
3086 /* Stats */
3087 memset(&dev->stats, 0, sizeof(dev->stats));
3088
3089 setup_struct_phy_for_init(dev, &dev->phy);
3090
3091 /* IRQ related flags */
3092 dev->irq_reason = 0;
3093 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3094 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
3095
3096 dev->mac_suspended = 1;
3097
3098 /* Noise calculation context */
3099 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3100 }
3101
3102 static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
3103 bool idle) {
3104 u16 pu_delay = 1050;
3105
3106 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3107 pu_delay = 500;
3108 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3109 pu_delay = max(pu_delay, (u16)2400);
3110
3111 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3112 B43legacy_SHM_SH_SPUWKUP, pu_delay);
3113 }
3114
3115 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3116 static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
3117 {
3118 u16 pretbtt;
3119
3120 /* The time value is in microseconds. */
3121 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
3122 pretbtt = 2;
3123 else
3124 pretbtt = 250;
3125 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3126 B43legacy_SHM_SH_PRETBTT, pretbtt);
3127 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
3128 }
3129
3130 /* Shutdown a wireless core */
3131 /* Locking: wl->mutex */
3132 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
3133 {
3134 struct b43legacy_phy *phy = &dev->phy;
3135 u32 macctl;
3136
3137 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
3138 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
3139 return;
3140 b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
3141
3142 /* Stop the microcode PSM. */
3143 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
3144 macctl &= ~B43legacy_MACCTL_PSM_RUN;
3145 macctl |= B43legacy_MACCTL_PSM_JMP0;
3146 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
3147
3148 b43legacy_leds_exit(dev);
3149 b43legacy_rng_exit(dev->wl);
3150 b43legacy_pio_free(dev);
3151 b43legacy_dma_free(dev);
3152 b43legacy_chip_exit(dev);
3153 b43legacy_radio_turn_off(dev, 1);
3154 b43legacy_switch_analog(dev, 0);
3155 if (phy->dyn_tssi_tbl)
3156 kfree(phy->tssi2dbm);
3157 kfree(phy->lo_control);
3158 phy->lo_control = NULL;
3159 if (dev->wl->current_beacon) {
3160 dev_kfree_skb_any(dev->wl->current_beacon);
3161 dev->wl->current_beacon = NULL;
3162 }
3163
3164 ssb_device_disable(dev->dev, 0);
3165 ssb_bus_may_powerdown(dev->dev->bus);
3166 }
3167
3168 static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
3169 {
3170 struct b43legacy_phy *phy = &dev->phy;
3171 int i;
3172
3173 /* Set default attenuation values. */
3174 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3175 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3176 phy->txctl1 = b43legacy_default_txctl1(dev);
3177 phy->txctl2 = 0xFFFF;
3178 phy->txpwr_offset = 0;
3179
3180 /* NRSSI */
3181 phy->nrssislope = 0;
3182 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3183 phy->nrssi[i] = -1000;
3184 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3185 phy->nrssi_lt[i] = i;
3186
3187 phy->lofcal = 0xFFFF;
3188 phy->initval = 0xFFFF;
3189
3190 phy->aci_enable = 0;
3191 phy->aci_wlan_automatic = 0;
3192 phy->aci_hw_rssi = 0;
3193
3194 phy->antenna_diversity = 0xFFFF;
3195 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3196 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3197
3198 /* Flags */
3199 phy->calibrated = 0;
3200
3201 if (phy->_lo_pairs)
3202 memset(phy->_lo_pairs, 0,
3203 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
3204 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
3205 }
3206
3207 /* Initialize a wireless core */
3208 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
3209 {
3210 struct b43legacy_wl *wl = dev->wl;
3211 struct ssb_bus *bus = dev->dev->bus;
3212 struct b43legacy_phy *phy = &dev->phy;
3213 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3214 int err;
3215 u32 hf;
3216 u32 tmp;
3217
3218 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3219
3220 err = ssb_bus_powerup(bus, 0);
3221 if (err)
3222 goto out;
3223 if (!ssb_device_is_enabled(dev->dev)) {
3224 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
3225 b43legacy_wireless_core_reset(dev, tmp);
3226 }
3227
3228 if ((phy->type == B43legacy_PHYTYPE_B) ||
3229 (phy->type == B43legacy_PHYTYPE_G)) {
3230 phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair)
3231 * B43legacy_LO_COUNT,
3232 GFP_KERNEL);
3233 if (!phy->_lo_pairs)
3234 return -ENOMEM;
3235 }
3236 setup_struct_wldev_for_init(dev);
3237
3238 err = b43legacy_phy_init_tssi2dbm_table(dev);
3239 if (err)
3240 goto err_kfree_lo_control;
3241
3242 /* Enable IRQ routing to this device. */
3243 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3244
3245 prepare_phy_data_for_init(dev);
3246 b43legacy_phy_calibrate(dev);
3247 err = b43legacy_chip_init(dev);
3248 if (err)
3249 goto err_kfree_tssitbl;
3250 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3251 B43legacy_SHM_SH_WLCOREREV,
3252 dev->dev->id.revision);
3253 hf = b43legacy_hf_read(dev);
3254 if (phy->type == B43legacy_PHYTYPE_G) {
3255 hf |= B43legacy_HF_SYMW;
3256 if (phy->rev == 1)
3257 hf |= B43legacy_HF_GDCW;
3258 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
3259 hf |= B43legacy_HF_OFDMPABOOST;
3260 } else if (phy->type == B43legacy_PHYTYPE_B) {
3261 hf |= B43legacy_HF_SYMW;
3262 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3263 hf &= ~B43legacy_HF_GDCW;
3264 }
3265 b43legacy_hf_write(dev, hf);
3266
3267 b43legacy_set_retry_limits(dev,
3268 B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
3269 B43legacy_DEFAULT_LONG_RETRY_LIMIT);
3270
3271 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3272 0x0044, 3);
3273 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3274 0x0046, 2);
3275
3276 /* Disable sending probe responses from firmware.
3277 * Setting the MaxTime to one usec will always trigger
3278 * a timeout, so we never send any probe resp.
3279 * A timeout of zero is infinite. */
3280 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3281 B43legacy_SHM_SH_PRMAXTIME, 1);
3282
3283 b43legacy_rate_memory_init(dev);
3284
3285 /* Minimum Contention Window */
3286 if (phy->type == B43legacy_PHYTYPE_B)
3287 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3288 0x0003, 31);
3289 else
3290 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3291 0x0003, 15);
3292 /* Maximum Contention Window */
3293 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3294 0x0004, 1023);
3295
3296 do {
3297 if (b43legacy_using_pio(dev))
3298 err = b43legacy_pio_init(dev);
3299 else {
3300 err = b43legacy_dma_init(dev);
3301 if (!err)
3302 b43legacy_qos_init(dev);
3303 }
3304 } while (err == -EAGAIN);
3305 if (err)
3306 goto err_chip_exit;
3307
3308 b43legacy_set_synth_pu_delay(dev, 1);
3309
3310 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3311 b43legacy_upload_card_macaddress(dev);
3312 b43legacy_security_init(dev);
3313 b43legacy_rng_init(wl);
3314
3315 ieee80211_wake_queues(dev->wl->hw);
3316 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
3317
3318 b43legacy_leds_init(dev);
3319 out:
3320 return err;
3321
3322 err_chip_exit:
3323 b43legacy_chip_exit(dev);
3324 err_kfree_tssitbl:
3325 if (phy->dyn_tssi_tbl)
3326 kfree(phy->tssi2dbm);
3327 err_kfree_lo_control:
3328 kfree(phy->lo_control);
3329 phy->lo_control = NULL;
3330 ssb_bus_may_powerdown(bus);
3331 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3332 return err;
3333 }
3334
3335 static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
3336 struct ieee80211_vif *vif)
3337 {
3338 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3339 struct b43legacy_wldev *dev;
3340 unsigned long flags;
3341 int err = -EOPNOTSUPP;
3342
3343 /* TODO: allow WDS/AP devices to coexist */
3344
3345 if (vif->type != NL80211_IFTYPE_AP &&
3346 vif->type != NL80211_IFTYPE_STATION &&
3347 vif->type != NL80211_IFTYPE_WDS &&
3348 vif->type != NL80211_IFTYPE_ADHOC)
3349 return -EOPNOTSUPP;
3350
3351 mutex_lock(&wl->mutex);
3352 if (wl->operating)
3353 goto out_mutex_unlock;
3354
3355 b43legacydbg(wl, "Adding Interface type %d\n", vif->type);
3356
3357 dev = wl->current_dev;
3358 wl->operating = 1;
3359 wl->vif = vif;
3360 wl->if_type = vif->type;
3361 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
3362
3363 spin_lock_irqsave(&wl->irq_lock, flags);
3364 b43legacy_adjust_opmode(dev);
3365 b43legacy_set_pretbtt(dev);
3366 b43legacy_set_synth_pu_delay(dev, 0);
3367 b43legacy_upload_card_macaddress(dev);
3368 spin_unlock_irqrestore(&wl->irq_lock, flags);
3369
3370 err = 0;
3371 out_mutex_unlock:
3372 mutex_unlock(&wl->mutex);
3373
3374 return err;
3375 }
3376
3377 static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
3378 struct ieee80211_vif *vif)
3379 {
3380 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3381 struct b43legacy_wldev *dev = wl->current_dev;
3382 unsigned long flags;
3383
3384 b43legacydbg(wl, "Removing Interface type %d\n", vif->type);
3385
3386 mutex_lock(&wl->mutex);
3387
3388 B43legacy_WARN_ON(!wl->operating);
3389 B43legacy_WARN_ON(wl->vif != vif);
3390 wl->vif = NULL;
3391
3392 wl->operating = 0;
3393
3394 spin_lock_irqsave(&wl->irq_lock, flags);
3395 b43legacy_adjust_opmode(dev);
3396 memset(wl->mac_addr, 0, ETH_ALEN);
3397 b43legacy_upload_card_macaddress(dev);
3398 spin_unlock_irqrestore(&wl->irq_lock, flags);
3399
3400 mutex_unlock(&wl->mutex);
3401 }
3402
3403 static int b43legacy_op_start(struct ieee80211_hw *hw)
3404 {
3405 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3406 struct b43legacy_wldev *dev = wl->current_dev;
3407 int did_init = 0;
3408 int err = 0;
3409
3410 /* Kill all old instance specific information to make sure
3411 * the card won't use it in the short timeframe between start
3412 * and mac80211 reconfiguring it. */
3413 memset(wl->bssid, 0, ETH_ALEN);
3414 memset(wl->mac_addr, 0, ETH_ALEN);
3415 wl->filter_flags = 0;
3416 wl->beacon0_uploaded = 0;
3417 wl->beacon1_uploaded = 0;
3418 wl->beacon_templates_virgin = 1;
3419 wl->radio_enabled = 1;
3420
3421 mutex_lock(&wl->mutex);
3422
3423 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
3424 err = b43legacy_wireless_core_init(dev);
3425 if (err)
3426 goto out_mutex_unlock;
3427 did_init = 1;
3428 }
3429
3430 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
3431 err = b43legacy_wireless_core_start(dev);
3432 if (err) {
3433 if (did_init)
3434 b43legacy_wireless_core_exit(dev);
3435 goto out_mutex_unlock;
3436 }
3437 }
3438
3439 wiphy_rfkill_start_polling(hw->wiphy);
3440
3441 out_mutex_unlock:
3442 mutex_unlock(&wl->mutex);
3443
3444 return err;
3445 }
3446
3447 static void b43legacy_op_stop(struct ieee80211_hw *hw)
3448 {
3449 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3450 struct b43legacy_wldev *dev = wl->current_dev;
3451
3452 cancel_work_sync(&(wl->beacon_update_trigger));
3453
3454 mutex_lock(&wl->mutex);
3455 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
3456 b43legacy_wireless_core_stop(dev);
3457 b43legacy_wireless_core_exit(dev);
3458 wl->radio_enabled = 0;
3459 mutex_unlock(&wl->mutex);
3460 }
3461
3462 static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
3463 struct ieee80211_sta *sta, bool set)
3464 {
3465 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3466 unsigned long flags;
3467
3468 spin_lock_irqsave(&wl->irq_lock, flags);
3469 b43legacy_update_templates(wl);
3470 spin_unlock_irqrestore(&wl->irq_lock, flags);
3471
3472 return 0;
3473 }
3474
3475 static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
3476 struct survey_info *survey)
3477 {
3478 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3479 struct b43legacy_wldev *dev = wl->current_dev;
3480 struct ieee80211_conf *conf = &hw->conf;
3481
3482 if (idx != 0)
3483 return -ENOENT;
3484
3485 survey->channel = conf->channel;
3486 survey->filled = SURVEY_INFO_NOISE_DBM;
3487 survey->noise = dev->stats.link_noise;
3488
3489 return 0;
3490 }
3491
3492 static const struct ieee80211_ops b43legacy_hw_ops = {
3493 .tx = b43legacy_op_tx,
3494 .conf_tx = b43legacy_op_conf_tx,
3495 .add_interface = b43legacy_op_add_interface,
3496 .remove_interface = b43legacy_op_remove_interface,
3497 .config = b43legacy_op_dev_config,
3498 .bss_info_changed = b43legacy_op_bss_info_changed,
3499 .configure_filter = b43legacy_op_configure_filter,
3500 .get_stats = b43legacy_op_get_stats,
3501 .start = b43legacy_op_start,
3502 .stop = b43legacy_op_stop,
3503 .set_tim = b43legacy_op_beacon_set_tim,
3504 .get_survey = b43legacy_op_get_survey,
3505 .rfkill_poll = b43legacy_rfkill_poll,
3506 };
3507
3508 /* Hard-reset the chip. Do not call this directly.
3509 * Use b43legacy_controller_restart()
3510 */
3511 static void b43legacy_chip_reset(struct work_struct *work)
3512 {
3513 struct b43legacy_wldev *dev =
3514 container_of(work, struct b43legacy_wldev, restart_work);
3515 struct b43legacy_wl *wl = dev->wl;
3516 int err = 0;
3517 int prev_status;
3518
3519 mutex_lock(&wl->mutex);
3520
3521 prev_status = b43legacy_status(dev);
3522 /* Bring the device down... */
3523 if (prev_status >= B43legacy_STAT_STARTED)
3524 b43legacy_wireless_core_stop(dev);
3525 if (prev_status >= B43legacy_STAT_INITIALIZED)
3526 b43legacy_wireless_core_exit(dev);
3527
3528 /* ...and up again. */
3529 if (prev_status >= B43legacy_STAT_INITIALIZED) {
3530 err = b43legacy_wireless_core_init(dev);
3531 if (err)
3532 goto out;
3533 }
3534 if (prev_status >= B43legacy_STAT_STARTED) {
3535 err = b43legacy_wireless_core_start(dev);
3536 if (err) {
3537 b43legacy_wireless_core_exit(dev);
3538 goto out;
3539 }
3540 }
3541 out:
3542 if (err)
3543 wl->current_dev = NULL; /* Failed to init the dev. */
3544 mutex_unlock(&wl->mutex);
3545 if (err)
3546 b43legacyerr(wl, "Controller restart FAILED\n");
3547 else
3548 b43legacyinfo(wl, "Controller restarted\n");
3549 }
3550
3551 static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
3552 int have_bphy,
3553 int have_gphy)
3554 {
3555 struct ieee80211_hw *hw = dev->wl->hw;
3556 struct b43legacy_phy *phy = &dev->phy;
3557
3558 phy->possible_phymodes = 0;
3559 if (have_bphy) {
3560 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3561 &b43legacy_band_2GHz_BPHY;
3562 phy->possible_phymodes |= B43legacy_PHYMODE_B;
3563 }
3564
3565 if (have_gphy) {
3566 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3567 &b43legacy_band_2GHz_GPHY;
3568 phy->possible_phymodes |= B43legacy_PHYMODE_G;
3569 }
3570
3571 return 0;
3572 }
3573
3574 static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
3575 {
3576 /* We release firmware that late to not be required to re-request
3577 * is all the time when we reinit the core. */
3578 b43legacy_release_firmware(dev);
3579 }
3580
3581 static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
3582 {
3583 struct b43legacy_wl *wl = dev->wl;
3584 struct ssb_bus *bus = dev->dev->bus;
3585 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
3586 int err;
3587 int have_bphy = 0;
3588 int have_gphy = 0;
3589 u32 tmp;
3590
3591 /* Do NOT do any device initialization here.
3592 * Do it in wireless_core_init() instead.
3593 * This function is for gathering basic information about the HW, only.
3594 * Also some structs may be set up here. But most likely you want to
3595 * have that in core_init(), too.
3596 */
3597
3598 err = ssb_bus_powerup(bus, 0);
3599 if (err) {
3600 b43legacyerr(wl, "Bus powerup failed\n");
3601 goto out;
3602 }
3603 /* Get the PHY type. */
3604 if (dev->dev->id.revision >= 5) {
3605 u32 tmshigh;
3606
3607 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3608 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
3609 if (!have_gphy)
3610 have_bphy = 1;
3611 } else if (dev->dev->id.revision == 4)
3612 have_gphy = 1;
3613 else
3614 have_bphy = 1;
3615
3616 dev->phy.gmode = (have_gphy || have_bphy);
3617 dev->phy.radio_on = 1;
3618 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3619 b43legacy_wireless_core_reset(dev, tmp);
3620
3621 err = b43legacy_phy_versioning(dev);
3622 if (err)
3623 goto err_powerdown;
3624 /* Check if this device supports multiband. */
3625 if (!pdev ||
3626 (pdev->device != 0x4312 &&
3627 pdev->device != 0x4319 &&
3628 pdev->device != 0x4324)) {
3629 /* No multiband support. */
3630 have_bphy = 0;
3631 have_gphy = 0;
3632 switch (dev->phy.type) {
3633 case B43legacy_PHYTYPE_B:
3634 have_bphy = 1;
3635 break;
3636 case B43legacy_PHYTYPE_G:
3637 have_gphy = 1;
3638 break;
3639 default:
3640 B43legacy_BUG_ON(1);
3641 }
3642 }
3643 dev->phy.gmode = (have_gphy || have_bphy);
3644 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3645 b43legacy_wireless_core_reset(dev, tmp);
3646
3647 err = b43legacy_validate_chipaccess(dev);
3648 if (err)
3649 goto err_powerdown;
3650 err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
3651 if (err)
3652 goto err_powerdown;
3653
3654 /* Now set some default "current_dev" */
3655 if (!wl->current_dev)
3656 wl->current_dev = dev;
3657 INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
3658
3659 b43legacy_radio_turn_off(dev, 1);
3660 b43legacy_switch_analog(dev, 0);
3661 ssb_device_disable(dev->dev, 0);
3662 ssb_bus_may_powerdown(bus);
3663
3664 out:
3665 return err;
3666
3667 err_powerdown:
3668 ssb_bus_may_powerdown(bus);
3669 return err;
3670 }
3671
3672 static void b43legacy_one_core_detach(struct ssb_device *dev)
3673 {
3674 struct b43legacy_wldev *wldev;
3675 struct b43legacy_wl *wl;
3676
3677 /* Do not cancel ieee80211-workqueue based work here.
3678 * See comment in b43legacy_remove(). */
3679
3680 wldev = ssb_get_drvdata(dev);
3681 wl = wldev->wl;
3682 b43legacy_debugfs_remove_device(wldev);
3683 b43legacy_wireless_core_detach(wldev);
3684 list_del(&wldev->list);
3685 wl->nr_devs--;
3686 ssb_set_drvdata(dev, NULL);
3687 kfree(wldev);
3688 }
3689
3690 static int b43legacy_one_core_attach(struct ssb_device *dev,
3691 struct b43legacy_wl *wl)
3692 {
3693 struct b43legacy_wldev *wldev;
3694 int err = -ENOMEM;
3695
3696 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3697 if (!wldev)
3698 goto out;
3699
3700 wldev->dev = dev;
3701 wldev->wl = wl;
3702 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
3703 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3704 tasklet_init(&wldev->isr_tasklet,
3705 (void (*)(unsigned long))b43legacy_interrupt_tasklet,
3706 (unsigned long)wldev);
3707 if (modparam_pio)
3708 wldev->__using_pio = 1;
3709 INIT_LIST_HEAD(&wldev->list);
3710
3711 err = b43legacy_wireless_core_attach(wldev);
3712 if (err)
3713 goto err_kfree_wldev;
3714
3715 list_add(&wldev->list, &wl->devlist);
3716 wl->nr_devs++;
3717 ssb_set_drvdata(dev, wldev);
3718 b43legacy_debugfs_add_device(wldev);
3719 out:
3720 return err;
3721
3722 err_kfree_wldev:
3723 kfree(wldev);
3724 return err;
3725 }
3726
3727 static void b43legacy_sprom_fixup(struct ssb_bus *bus)
3728 {
3729 /* boardflags workarounds */
3730 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3731 bus->boardinfo.type == 0x4E &&
3732 bus->boardinfo.rev > 0x40)
3733 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
3734 }
3735
3736 static void b43legacy_wireless_exit(struct ssb_device *dev,
3737 struct b43legacy_wl *wl)
3738 {
3739 struct ieee80211_hw *hw = wl->hw;
3740
3741 ssb_set_devtypedata(dev, NULL);
3742 ieee80211_free_hw(hw);
3743 }
3744
3745 static int b43legacy_wireless_init(struct ssb_device *dev)
3746 {
3747 struct ssb_sprom *sprom = &dev->bus->sprom;
3748 struct ieee80211_hw *hw;
3749 struct b43legacy_wl *wl;
3750 int err = -ENOMEM;
3751
3752 b43legacy_sprom_fixup(dev->bus);
3753
3754 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
3755 if (!hw) {
3756 b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
3757 goto out;
3758 }
3759
3760 /* fill hw info */
3761 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
3762 IEEE80211_HW_SIGNAL_DBM;
3763 hw->wiphy->interface_modes =
3764 BIT(NL80211_IFTYPE_AP) |
3765 BIT(NL80211_IFTYPE_STATION) |
3766 BIT(NL80211_IFTYPE_WDS) |
3767 BIT(NL80211_IFTYPE_ADHOC);
3768 hw->queues = 1; /* FIXME: hardware has more queues */
3769 hw->max_rates = 2;
3770 SET_IEEE80211_DEV(hw, dev->dev);
3771 if (is_valid_ether_addr(sprom->et1mac))
3772 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3773 else
3774 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3775
3776 /* Get and initialize struct b43legacy_wl */
3777 wl = hw_to_b43legacy_wl(hw);
3778 memset(wl, 0, sizeof(*wl));
3779 wl->hw = hw;
3780 spin_lock_init(&wl->irq_lock);
3781 spin_lock_init(&wl->leds_lock);
3782 mutex_init(&wl->mutex);
3783 INIT_LIST_HEAD(&wl->devlist);
3784 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
3785
3786 ssb_set_devtypedata(dev, wl);
3787 b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n",
3788 dev->bus->chip_id, dev->id.revision);
3789 err = 0;
3790 out:
3791 return err;
3792 }
3793
3794 static int b43legacy_probe(struct ssb_device *dev,
3795 const struct ssb_device_id *id)
3796 {
3797 struct b43legacy_wl *wl;
3798 int err;
3799 int first = 0;
3800
3801 wl = ssb_get_devtypedata(dev);
3802 if (!wl) {
3803 /* Probing the first core - setup common struct b43legacy_wl */
3804 first = 1;
3805 err = b43legacy_wireless_init(dev);
3806 if (err)
3807 goto out;
3808 wl = ssb_get_devtypedata(dev);
3809 B43legacy_WARN_ON(!wl);
3810 }
3811 err = b43legacy_one_core_attach(dev, wl);
3812 if (err)
3813 goto err_wireless_exit;
3814
3815 if (first) {
3816 err = ieee80211_register_hw(wl->hw);
3817 if (err)
3818 goto err_one_core_detach;
3819 }
3820
3821 out:
3822 return err;
3823
3824 err_one_core_detach:
3825 b43legacy_one_core_detach(dev);
3826 err_wireless_exit:
3827 if (first)
3828 b43legacy_wireless_exit(dev, wl);
3829 return err;
3830 }
3831
3832 static void b43legacy_remove(struct ssb_device *dev)
3833 {
3834 struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
3835 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3836
3837 /* We must cancel any work here before unregistering from ieee80211,
3838 * as the ieee80211 unreg will destroy the workqueue. */
3839 cancel_work_sync(&wldev->restart_work);
3840
3841 B43legacy_WARN_ON(!wl);
3842 if (wl->current_dev == wldev)
3843 ieee80211_unregister_hw(wl->hw);
3844
3845 b43legacy_one_core_detach(dev);
3846
3847 if (list_empty(&wl->devlist))
3848 /* Last core on the chip unregistered.
3849 * We can destroy common struct b43legacy_wl.
3850 */
3851 b43legacy_wireless_exit(dev, wl);
3852 }
3853
3854 /* Perform a hardware reset. This can be called from any context. */
3855 void b43legacy_controller_restart(struct b43legacy_wldev *dev,
3856 const char *reason)
3857 {
3858 /* Must avoid requeueing, if we are in shutdown. */
3859 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
3860 return;
3861 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
3862 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
3863 }
3864
3865 #ifdef CONFIG_PM
3866
3867 static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
3868 {
3869 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3870 struct b43legacy_wl *wl = wldev->wl;
3871
3872 b43legacydbg(wl, "Suspending...\n");
3873
3874 mutex_lock(&wl->mutex);
3875 wldev->suspend_init_status = b43legacy_status(wldev);
3876 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
3877 b43legacy_wireless_core_stop(wldev);
3878 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
3879 b43legacy_wireless_core_exit(wldev);
3880 mutex_unlock(&wl->mutex);
3881
3882 b43legacydbg(wl, "Device suspended.\n");
3883
3884 return 0;
3885 }
3886
3887 static int b43legacy_resume(struct ssb_device *dev)
3888 {
3889 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3890 struct b43legacy_wl *wl = wldev->wl;
3891 int err = 0;
3892
3893 b43legacydbg(wl, "Resuming...\n");
3894
3895 mutex_lock(&wl->mutex);
3896 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
3897 err = b43legacy_wireless_core_init(wldev);
3898 if (err) {
3899 b43legacyerr(wl, "Resume failed at core init\n");
3900 goto out;
3901 }
3902 }
3903 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
3904 err = b43legacy_wireless_core_start(wldev);
3905 if (err) {
3906 b43legacy_wireless_core_exit(wldev);
3907 b43legacyerr(wl, "Resume failed at core start\n");
3908 goto out;
3909 }
3910 }
3911
3912 b43legacydbg(wl, "Device resumed.\n");
3913 out:
3914 mutex_unlock(&wl->mutex);
3915 return err;
3916 }
3917
3918 #else /* CONFIG_PM */
3919 # define b43legacy_suspend NULL
3920 # define b43legacy_resume NULL
3921 #endif /* CONFIG_PM */
3922
3923 static struct ssb_driver b43legacy_ssb_driver = {
3924 .name = KBUILD_MODNAME,
3925 .id_table = b43legacy_ssb_tbl,
3926 .probe = b43legacy_probe,
3927 .remove = b43legacy_remove,
3928 .suspend = b43legacy_suspend,
3929 .resume = b43legacy_resume,
3930 };
3931
3932 static void b43legacy_print_driverinfo(void)
3933 {
3934 const char *feat_pci = "", *feat_leds = "",
3935 *feat_pio = "", *feat_dma = "";
3936
3937 #ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
3938 feat_pci = "P";
3939 #endif
3940 #ifdef CONFIG_B43LEGACY_LEDS
3941 feat_leds = "L";
3942 #endif
3943 #ifdef CONFIG_B43LEGACY_PIO
3944 feat_pio = "I";
3945 #endif
3946 #ifdef CONFIG_B43LEGACY_DMA
3947 feat_dma = "D";
3948 #endif
3949 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
3950 "[ Features: %s%s%s%s, Firmware-ID: "
3951 B43legacy_SUPPORTED_FIRMWARE_ID " ]\n",
3952 feat_pci, feat_leds, feat_pio, feat_dma);
3953 }
3954
3955 static int __init b43legacy_init(void)
3956 {
3957 int err;
3958
3959 b43legacy_debugfs_init();
3960
3961 err = ssb_driver_register(&b43legacy_ssb_driver);
3962 if (err)
3963 goto err_dfs_exit;
3964
3965 b43legacy_print_driverinfo();
3966
3967 return err;
3968
3969 err_dfs_exit:
3970 b43legacy_debugfs_exit();
3971 return err;
3972 }
3973
3974 static void __exit b43legacy_exit(void)
3975 {
3976 ssb_driver_unregister(&b43legacy_ssb_driver);
3977 b43legacy_debugfs_exit();
3978 }
3979
3980 module_init(b43legacy_init)
3981 module_exit(b43legacy_exit)
linux-next