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mac80211: Extend filter flag documentation about unsupported flags
[deliverable/linux.git] / drivers / net / wireless / b43 / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 Some parts of the code in this file are derived from the ipw2200
12 driver Copyright(c) 2003 - 2004 Intel Corporation.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; see the file COPYING. If not, write to
26 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
27 Boston, MA 02110-1301, USA.
28
29 */
30
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/moduleparam.h>
34 #include <linux/if_arp.h>
35 #include <linux/etherdevice.h>
36 #include <linux/version.h>
37 #include <linux/firmware.h>
38 #include <linux/wireless.h>
39 #include <linux/workqueue.h>
40 #include <linux/skbuff.h>
41 #include <linux/io.h>
42 #include <linux/dma-mapping.h>
43 #include <asm/unaligned.h>
44
45 #include "b43.h"
46 #include "main.h"
47 #include "debugfs.h"
48 #include "phy.h"
49 #include "dma.h"
50 #include "sysfs.h"
51 #include "xmit.h"
52 #include "lo.h"
53 #include "pcmcia.h"
54
55 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
56 MODULE_AUTHOR("Martin Langer");
57 MODULE_AUTHOR("Stefano Brivio");
58 MODULE_AUTHOR("Michael Buesch");
59 MODULE_LICENSE("GPL");
60
61 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
62
63
64 static int modparam_bad_frames_preempt;
65 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
66 MODULE_PARM_DESC(bad_frames_preempt,
67 "enable(1) / disable(0) Bad Frames Preemption");
68
69 static char modparam_fwpostfix[16];
70 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
71 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
72
73 static int modparam_hwpctl;
74 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
75 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
76
77 static int modparam_nohwcrypt;
78 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
79 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
80
81 static const struct ssb_device_id b43_ssb_tbl[] = {
82 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
83 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
84 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
85 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
86 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
87 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
88 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
89 SSB_DEVTABLE_END
90 };
91
92 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
93
94 /* Channel and ratetables are shared for all devices.
95 * They can't be const, because ieee80211 puts some precalculated
96 * data in there. This data is the same for all devices, so we don't
97 * get concurrency issues */
98 #define RATETAB_ENT(_rateid, _flags) \
99 { \
100 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
101 .hw_value = (_rateid), \
102 .flags = (_flags), \
103 }
104
105 /*
106 * NOTE: When changing this, sync with xmit.c's
107 * b43_plcp_get_bitrate_idx_* functions!
108 */
109 static struct ieee80211_rate __b43_ratetable[] = {
110 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
111 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
112 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
113 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
114 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
115 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
116 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
117 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
118 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
119 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
120 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
121 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
122 };
123
124 #define b43_a_ratetable (__b43_ratetable + 4)
125 #define b43_a_ratetable_size 8
126 #define b43_b_ratetable (__b43_ratetable + 0)
127 #define b43_b_ratetable_size 4
128 #define b43_g_ratetable (__b43_ratetable + 0)
129 #define b43_g_ratetable_size 12
130
131 #define CHAN4G(_channel, _freq, _flags) { \
132 .band = IEEE80211_BAND_2GHZ, \
133 .center_freq = (_freq), \
134 .hw_value = (_channel), \
135 .flags = (_flags), \
136 .max_antenna_gain = 0, \
137 .max_power = 30, \
138 }
139 static struct ieee80211_channel b43_2ghz_chantable[] = {
140 CHAN4G(1, 2412, 0),
141 CHAN4G(2, 2417, 0),
142 CHAN4G(3, 2422, 0),
143 CHAN4G(4, 2427, 0),
144 CHAN4G(5, 2432, 0),
145 CHAN4G(6, 2437, 0),
146 CHAN4G(7, 2442, 0),
147 CHAN4G(8, 2447, 0),
148 CHAN4G(9, 2452, 0),
149 CHAN4G(10, 2457, 0),
150 CHAN4G(11, 2462, 0),
151 CHAN4G(12, 2467, 0),
152 CHAN4G(13, 2472, 0),
153 CHAN4G(14, 2484, 0),
154 };
155 #undef CHAN4G
156
157 #define CHAN5G(_channel, _flags) { \
158 .band = IEEE80211_BAND_5GHZ, \
159 .center_freq = 5000 + (5 * (_channel)), \
160 .hw_value = (_channel), \
161 .flags = (_flags), \
162 .max_antenna_gain = 0, \
163 .max_power = 30, \
164 }
165 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
166 CHAN5G(32, 0), CHAN5G(34, 0),
167 CHAN5G(36, 0), CHAN5G(38, 0),
168 CHAN5G(40, 0), CHAN5G(42, 0),
169 CHAN5G(44, 0), CHAN5G(46, 0),
170 CHAN5G(48, 0), CHAN5G(50, 0),
171 CHAN5G(52, 0), CHAN5G(54, 0),
172 CHAN5G(56, 0), CHAN5G(58, 0),
173 CHAN5G(60, 0), CHAN5G(62, 0),
174 CHAN5G(64, 0), CHAN5G(66, 0),
175 CHAN5G(68, 0), CHAN5G(70, 0),
176 CHAN5G(72, 0), CHAN5G(74, 0),
177 CHAN5G(76, 0), CHAN5G(78, 0),
178 CHAN5G(80, 0), CHAN5G(82, 0),
179 CHAN5G(84, 0), CHAN5G(86, 0),
180 CHAN5G(88, 0), CHAN5G(90, 0),
181 CHAN5G(92, 0), CHAN5G(94, 0),
182 CHAN5G(96, 0), CHAN5G(98, 0),
183 CHAN5G(100, 0), CHAN5G(102, 0),
184 CHAN5G(104, 0), CHAN5G(106, 0),
185 CHAN5G(108, 0), CHAN5G(110, 0),
186 CHAN5G(112, 0), CHAN5G(114, 0),
187 CHAN5G(116, 0), CHAN5G(118, 0),
188 CHAN5G(120, 0), CHAN5G(122, 0),
189 CHAN5G(124, 0), CHAN5G(126, 0),
190 CHAN5G(128, 0), CHAN5G(130, 0),
191 CHAN5G(132, 0), CHAN5G(134, 0),
192 CHAN5G(136, 0), CHAN5G(138, 0),
193 CHAN5G(140, 0), CHAN5G(142, 0),
194 CHAN5G(144, 0), CHAN5G(145, 0),
195 CHAN5G(146, 0), CHAN5G(147, 0),
196 CHAN5G(148, 0), CHAN5G(149, 0),
197 CHAN5G(150, 0), CHAN5G(151, 0),
198 CHAN5G(152, 0), CHAN5G(153, 0),
199 CHAN5G(154, 0), CHAN5G(155, 0),
200 CHAN5G(156, 0), CHAN5G(157, 0),
201 CHAN5G(158, 0), CHAN5G(159, 0),
202 CHAN5G(160, 0), CHAN5G(161, 0),
203 CHAN5G(162, 0), CHAN5G(163, 0),
204 CHAN5G(164, 0), CHAN5G(165, 0),
205 CHAN5G(166, 0), CHAN5G(168, 0),
206 CHAN5G(170, 0), CHAN5G(172, 0),
207 CHAN5G(174, 0), CHAN5G(176, 0),
208 CHAN5G(178, 0), CHAN5G(180, 0),
209 CHAN5G(182, 0), CHAN5G(184, 0),
210 CHAN5G(186, 0), CHAN5G(188, 0),
211 CHAN5G(190, 0), CHAN5G(192, 0),
212 CHAN5G(194, 0), CHAN5G(196, 0),
213 CHAN5G(198, 0), CHAN5G(200, 0),
214 CHAN5G(202, 0), CHAN5G(204, 0),
215 CHAN5G(206, 0), CHAN5G(208, 0),
216 CHAN5G(210, 0), CHAN5G(212, 0),
217 CHAN5G(214, 0), CHAN5G(216, 0),
218 CHAN5G(218, 0), CHAN5G(220, 0),
219 CHAN5G(222, 0), CHAN5G(224, 0),
220 CHAN5G(226, 0), CHAN5G(228, 0),
221 };
222
223 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
224 CHAN5G(34, 0), CHAN5G(36, 0),
225 CHAN5G(38, 0), CHAN5G(40, 0),
226 CHAN5G(42, 0), CHAN5G(44, 0),
227 CHAN5G(46, 0), CHAN5G(48, 0),
228 CHAN5G(52, 0), CHAN5G(56, 0),
229 CHAN5G(60, 0), CHAN5G(64, 0),
230 CHAN5G(100, 0), CHAN5G(104, 0),
231 CHAN5G(108, 0), CHAN5G(112, 0),
232 CHAN5G(116, 0), CHAN5G(120, 0),
233 CHAN5G(124, 0), CHAN5G(128, 0),
234 CHAN5G(132, 0), CHAN5G(136, 0),
235 CHAN5G(140, 0), CHAN5G(149, 0),
236 CHAN5G(153, 0), CHAN5G(157, 0),
237 CHAN5G(161, 0), CHAN5G(165, 0),
238 CHAN5G(184, 0), CHAN5G(188, 0),
239 CHAN5G(192, 0), CHAN5G(196, 0),
240 CHAN5G(200, 0), CHAN5G(204, 0),
241 CHAN5G(208, 0), CHAN5G(212, 0),
242 CHAN5G(216, 0),
243 };
244 #undef CHAN5G
245
246 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
247 .band = IEEE80211_BAND_5GHZ,
248 .channels = b43_5ghz_nphy_chantable,
249 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
250 .bitrates = b43_a_ratetable,
251 .n_bitrates = b43_a_ratetable_size,
252 };
253
254 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
255 .band = IEEE80211_BAND_5GHZ,
256 .channels = b43_5ghz_aphy_chantable,
257 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
258 .bitrates = b43_a_ratetable,
259 .n_bitrates = b43_a_ratetable_size,
260 };
261
262 static struct ieee80211_supported_band b43_band_2GHz = {
263 .band = IEEE80211_BAND_2GHZ,
264 .channels = b43_2ghz_chantable,
265 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
266 .bitrates = b43_g_ratetable,
267 .n_bitrates = b43_g_ratetable_size,
268 };
269
270 static void b43_wireless_core_exit(struct b43_wldev *dev);
271 static int b43_wireless_core_init(struct b43_wldev *dev);
272 static void b43_wireless_core_stop(struct b43_wldev *dev);
273 static int b43_wireless_core_start(struct b43_wldev *dev);
274
275 static int b43_ratelimit(struct b43_wl *wl)
276 {
277 if (!wl || !wl->current_dev)
278 return 1;
279 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
280 return 1;
281 /* We are up and running.
282 * Ratelimit the messages to avoid DoS over the net. */
283 return net_ratelimit();
284 }
285
286 void b43info(struct b43_wl *wl, const char *fmt, ...)
287 {
288 va_list args;
289
290 if (!b43_ratelimit(wl))
291 return;
292 va_start(args, fmt);
293 printk(KERN_INFO "b43-%s: ",
294 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
295 vprintk(fmt, args);
296 va_end(args);
297 }
298
299 void b43err(struct b43_wl *wl, const char *fmt, ...)
300 {
301 va_list args;
302
303 if (!b43_ratelimit(wl))
304 return;
305 va_start(args, fmt);
306 printk(KERN_ERR "b43-%s ERROR: ",
307 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
308 vprintk(fmt, args);
309 va_end(args);
310 }
311
312 void b43warn(struct b43_wl *wl, const char *fmt, ...)
313 {
314 va_list args;
315
316 if (!b43_ratelimit(wl))
317 return;
318 va_start(args, fmt);
319 printk(KERN_WARNING "b43-%s warning: ",
320 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
321 vprintk(fmt, args);
322 va_end(args);
323 }
324
325 #if B43_DEBUG
326 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
327 {
328 va_list args;
329
330 va_start(args, fmt);
331 printk(KERN_DEBUG "b43-%s debug: ",
332 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
333 vprintk(fmt, args);
334 va_end(args);
335 }
336 #endif /* DEBUG */
337
338 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
339 {
340 u32 macctl;
341
342 B43_WARN_ON(offset % 4 != 0);
343
344 macctl = b43_read32(dev, B43_MMIO_MACCTL);
345 if (macctl & B43_MACCTL_BE)
346 val = swab32(val);
347
348 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
349 mmiowb();
350 b43_write32(dev, B43_MMIO_RAM_DATA, val);
351 }
352
353 static inline void b43_shm_control_word(struct b43_wldev *dev,
354 u16 routing, u16 offset)
355 {
356 u32 control;
357
358 /* "offset" is the WORD offset. */
359 control = routing;
360 control <<= 16;
361 control |= offset;
362 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
363 }
364
365 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
366 {
367 struct b43_wl *wl = dev->wl;
368 unsigned long flags;
369 u32 ret;
370
371 spin_lock_irqsave(&wl->shm_lock, flags);
372 if (routing == B43_SHM_SHARED) {
373 B43_WARN_ON(offset & 0x0001);
374 if (offset & 0x0003) {
375 /* Unaligned access */
376 b43_shm_control_word(dev, routing, offset >> 2);
377 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
378 ret <<= 16;
379 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
380 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
381
382 goto out;
383 }
384 offset >>= 2;
385 }
386 b43_shm_control_word(dev, routing, offset);
387 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
388 out:
389 spin_unlock_irqrestore(&wl->shm_lock, flags);
390
391 return ret;
392 }
393
394 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
395 {
396 struct b43_wl *wl = dev->wl;
397 unsigned long flags;
398 u16 ret;
399
400 spin_lock_irqsave(&wl->shm_lock, flags);
401 if (routing == B43_SHM_SHARED) {
402 B43_WARN_ON(offset & 0x0001);
403 if (offset & 0x0003) {
404 /* Unaligned access */
405 b43_shm_control_word(dev, routing, offset >> 2);
406 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
407
408 goto out;
409 }
410 offset >>= 2;
411 }
412 b43_shm_control_word(dev, routing, offset);
413 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
414 out:
415 spin_unlock_irqrestore(&wl->shm_lock, flags);
416
417 return ret;
418 }
419
420 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
421 {
422 struct b43_wl *wl = dev->wl;
423 unsigned long flags;
424
425 spin_lock_irqsave(&wl->shm_lock, flags);
426 if (routing == B43_SHM_SHARED) {
427 B43_WARN_ON(offset & 0x0001);
428 if (offset & 0x0003) {
429 /* Unaligned access */
430 b43_shm_control_word(dev, routing, offset >> 2);
431 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
432 (value >> 16) & 0xffff);
433 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
434 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
435 goto out;
436 }
437 offset >>= 2;
438 }
439 b43_shm_control_word(dev, routing, offset);
440 b43_write32(dev, B43_MMIO_SHM_DATA, value);
441 out:
442 spin_unlock_irqrestore(&wl->shm_lock, flags);
443 }
444
445 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
446 {
447 struct b43_wl *wl = dev->wl;
448 unsigned long flags;
449
450 spin_lock_irqsave(&wl->shm_lock, flags);
451 if (routing == B43_SHM_SHARED) {
452 B43_WARN_ON(offset & 0x0001);
453 if (offset & 0x0003) {
454 /* Unaligned access */
455 b43_shm_control_word(dev, routing, offset >> 2);
456 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
457 goto out;
458 }
459 offset >>= 2;
460 }
461 b43_shm_control_word(dev, routing, offset);
462 b43_write16(dev, B43_MMIO_SHM_DATA, value);
463 out:
464 spin_unlock_irqrestore(&wl->shm_lock, flags);
465 }
466
467 /* Read HostFlags */
468 u32 b43_hf_read(struct b43_wldev * dev)
469 {
470 u32 ret;
471
472 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
473 ret <<= 16;
474 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
475
476 return ret;
477 }
478
479 /* Write HostFlags */
480 void b43_hf_write(struct b43_wldev *dev, u32 value)
481 {
482 b43_shm_write16(dev, B43_SHM_SHARED,
483 B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
484 b43_shm_write16(dev, B43_SHM_SHARED,
485 B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
486 }
487
488 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
489 {
490 /* We need to be careful. As we read the TSF from multiple
491 * registers, we should take care of register overflows.
492 * In theory, the whole tsf read process should be atomic.
493 * We try to be atomic here, by restaring the read process,
494 * if any of the high registers changed (overflew).
495 */
496 if (dev->dev->id.revision >= 3) {
497 u32 low, high, high2;
498
499 do {
500 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
501 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
502 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
503 } while (unlikely(high != high2));
504
505 *tsf = high;
506 *tsf <<= 32;
507 *tsf |= low;
508 } else {
509 u64 tmp;
510 u16 v0, v1, v2, v3;
511 u16 test1, test2, test3;
512
513 do {
514 v3 = b43_read16(dev, B43_MMIO_TSF_3);
515 v2 = b43_read16(dev, B43_MMIO_TSF_2);
516 v1 = b43_read16(dev, B43_MMIO_TSF_1);
517 v0 = b43_read16(dev, B43_MMIO_TSF_0);
518
519 test3 = b43_read16(dev, B43_MMIO_TSF_3);
520 test2 = b43_read16(dev, B43_MMIO_TSF_2);
521 test1 = b43_read16(dev, B43_MMIO_TSF_1);
522 } while (v3 != test3 || v2 != test2 || v1 != test1);
523
524 *tsf = v3;
525 *tsf <<= 48;
526 tmp = v2;
527 tmp <<= 32;
528 *tsf |= tmp;
529 tmp = v1;
530 tmp <<= 16;
531 *tsf |= tmp;
532 *tsf |= v0;
533 }
534 }
535
536 static void b43_time_lock(struct b43_wldev *dev)
537 {
538 u32 macctl;
539
540 macctl = b43_read32(dev, B43_MMIO_MACCTL);
541 macctl |= B43_MACCTL_TBTTHOLD;
542 b43_write32(dev, B43_MMIO_MACCTL, macctl);
543 /* Commit the write */
544 b43_read32(dev, B43_MMIO_MACCTL);
545 }
546
547 static void b43_time_unlock(struct b43_wldev *dev)
548 {
549 u32 macctl;
550
551 macctl = b43_read32(dev, B43_MMIO_MACCTL);
552 macctl &= ~B43_MACCTL_TBTTHOLD;
553 b43_write32(dev, B43_MMIO_MACCTL, macctl);
554 /* Commit the write */
555 b43_read32(dev, B43_MMIO_MACCTL);
556 }
557
558 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
559 {
560 /* Be careful with the in-progress timer.
561 * First zero out the low register, so we have a full
562 * register-overflow duration to complete the operation.
563 */
564 if (dev->dev->id.revision >= 3) {
565 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
566 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
567
568 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
569 mmiowb();
570 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
571 mmiowb();
572 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
573 } else {
574 u16 v0 = (tsf & 0x000000000000FFFFULL);
575 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
576 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
577 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
578
579 b43_write16(dev, B43_MMIO_TSF_0, 0);
580 mmiowb();
581 b43_write16(dev, B43_MMIO_TSF_3, v3);
582 mmiowb();
583 b43_write16(dev, B43_MMIO_TSF_2, v2);
584 mmiowb();
585 b43_write16(dev, B43_MMIO_TSF_1, v1);
586 mmiowb();
587 b43_write16(dev, B43_MMIO_TSF_0, v0);
588 }
589 }
590
591 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
592 {
593 b43_time_lock(dev);
594 b43_tsf_write_locked(dev, tsf);
595 b43_time_unlock(dev);
596 }
597
598 static
599 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
600 {
601 static const u8 zero_addr[ETH_ALEN] = { 0 };
602 u16 data;
603
604 if (!mac)
605 mac = zero_addr;
606
607 offset |= 0x0020;
608 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
609
610 data = mac[0];
611 data |= mac[1] << 8;
612 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
613 data = mac[2];
614 data |= mac[3] << 8;
615 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
616 data = mac[4];
617 data |= mac[5] << 8;
618 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
619 }
620
621 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
622 {
623 const u8 *mac;
624 const u8 *bssid;
625 u8 mac_bssid[ETH_ALEN * 2];
626 int i;
627 u32 tmp;
628
629 bssid = dev->wl->bssid;
630 mac = dev->wl->mac_addr;
631
632 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
633
634 memcpy(mac_bssid, mac, ETH_ALEN);
635 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
636
637 /* Write our MAC address and BSSID to template ram */
638 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
639 tmp = (u32) (mac_bssid[i + 0]);
640 tmp |= (u32) (mac_bssid[i + 1]) << 8;
641 tmp |= (u32) (mac_bssid[i + 2]) << 16;
642 tmp |= (u32) (mac_bssid[i + 3]) << 24;
643 b43_ram_write(dev, 0x20 + i, tmp);
644 }
645 }
646
647 static void b43_upload_card_macaddress(struct b43_wldev *dev)
648 {
649 b43_write_mac_bssid_templates(dev);
650 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
651 }
652
653 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
654 {
655 /* slot_time is in usec. */
656 if (dev->phy.type != B43_PHYTYPE_G)
657 return;
658 b43_write16(dev, 0x684, 510 + slot_time);
659 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
660 }
661
662 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
663 {
664 b43_set_slot_time(dev, 9);
665 dev->short_slot = 1;
666 }
667
668 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
669 {
670 b43_set_slot_time(dev, 20);
671 dev->short_slot = 0;
672 }
673
674 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
675 * Returns the _previously_ enabled IRQ mask.
676 */
677 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
678 {
679 u32 old_mask;
680
681 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
682 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
683
684 return old_mask;
685 }
686
687 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
688 * Returns the _previously_ enabled IRQ mask.
689 */
690 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
691 {
692 u32 old_mask;
693
694 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
695 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
696
697 return old_mask;
698 }
699
700 /* Synchronize IRQ top- and bottom-half.
701 * IRQs must be masked before calling this.
702 * This must not be called with the irq_lock held.
703 */
704 static void b43_synchronize_irq(struct b43_wldev *dev)
705 {
706 synchronize_irq(dev->dev->irq);
707 tasklet_kill(&dev->isr_tasklet);
708 }
709
710 /* DummyTransmission function, as documented on
711 * http://bcm-specs.sipsolutions.net/DummyTransmission
712 */
713 void b43_dummy_transmission(struct b43_wldev *dev)
714 {
715 struct b43_phy *phy = &dev->phy;
716 unsigned int i, max_loop;
717 u16 value;
718 u32 buffer[5] = {
719 0x00000000,
720 0x00D40000,
721 0x00000000,
722 0x01000000,
723 0x00000000,
724 };
725
726 switch (phy->type) {
727 case B43_PHYTYPE_A:
728 max_loop = 0x1E;
729 buffer[0] = 0x000201CC;
730 break;
731 case B43_PHYTYPE_B:
732 case B43_PHYTYPE_G:
733 max_loop = 0xFA;
734 buffer[0] = 0x000B846E;
735 break;
736 default:
737 B43_WARN_ON(1);
738 return;
739 }
740
741 for (i = 0; i < 5; i++)
742 b43_ram_write(dev, i * 4, buffer[i]);
743
744 /* Commit writes */
745 b43_read32(dev, B43_MMIO_MACCTL);
746
747 b43_write16(dev, 0x0568, 0x0000);
748 b43_write16(dev, 0x07C0, 0x0000);
749 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
750 b43_write16(dev, 0x050C, value);
751 b43_write16(dev, 0x0508, 0x0000);
752 b43_write16(dev, 0x050A, 0x0000);
753 b43_write16(dev, 0x054C, 0x0000);
754 b43_write16(dev, 0x056A, 0x0014);
755 b43_write16(dev, 0x0568, 0x0826);
756 b43_write16(dev, 0x0500, 0x0000);
757 b43_write16(dev, 0x0502, 0x0030);
758
759 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
760 b43_radio_write16(dev, 0x0051, 0x0017);
761 for (i = 0x00; i < max_loop; i++) {
762 value = b43_read16(dev, 0x050E);
763 if (value & 0x0080)
764 break;
765 udelay(10);
766 }
767 for (i = 0x00; i < 0x0A; i++) {
768 value = b43_read16(dev, 0x050E);
769 if (value & 0x0400)
770 break;
771 udelay(10);
772 }
773 for (i = 0x00; i < 0x0A; i++) {
774 value = b43_read16(dev, 0x0690);
775 if (!(value & 0x0100))
776 break;
777 udelay(10);
778 }
779 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
780 b43_radio_write16(dev, 0x0051, 0x0037);
781 }
782
783 static void key_write(struct b43_wldev *dev,
784 u8 index, u8 algorithm, const u8 * key)
785 {
786 unsigned int i;
787 u32 offset;
788 u16 value;
789 u16 kidx;
790
791 /* Key index/algo block */
792 kidx = b43_kidx_to_fw(dev, index);
793 value = ((kidx << 4) | algorithm);
794 b43_shm_write16(dev, B43_SHM_SHARED,
795 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
796
797 /* Write the key to the Key Table Pointer offset */
798 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
799 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
800 value = key[i];
801 value |= (u16) (key[i + 1]) << 8;
802 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
803 }
804 }
805
806 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
807 {
808 u32 addrtmp[2] = { 0, 0, };
809 u8 per_sta_keys_start = 8;
810
811 if (b43_new_kidx_api(dev))
812 per_sta_keys_start = 4;
813
814 B43_WARN_ON(index < per_sta_keys_start);
815 /* We have two default TX keys and possibly two default RX keys.
816 * Physical mac 0 is mapped to physical key 4 or 8, depending
817 * on the firmware version.
818 * So we must adjust the index here.
819 */
820 index -= per_sta_keys_start;
821
822 if (addr) {
823 addrtmp[0] = addr[0];
824 addrtmp[0] |= ((u32) (addr[1]) << 8);
825 addrtmp[0] |= ((u32) (addr[2]) << 16);
826 addrtmp[0] |= ((u32) (addr[3]) << 24);
827 addrtmp[1] = addr[4];
828 addrtmp[1] |= ((u32) (addr[5]) << 8);
829 }
830
831 if (dev->dev->id.revision >= 5) {
832 /* Receive match transmitter address mechanism */
833 b43_shm_write32(dev, B43_SHM_RCMTA,
834 (index * 2) + 0, addrtmp[0]);
835 b43_shm_write16(dev, B43_SHM_RCMTA,
836 (index * 2) + 1, addrtmp[1]);
837 } else {
838 /* RXE (Receive Engine) and
839 * PSM (Programmable State Machine) mechanism
840 */
841 if (index < 8) {
842 /* TODO write to RCM 16, 19, 22 and 25 */
843 } else {
844 b43_shm_write32(dev, B43_SHM_SHARED,
845 B43_SHM_SH_PSM + (index * 6) + 0,
846 addrtmp[0]);
847 b43_shm_write16(dev, B43_SHM_SHARED,
848 B43_SHM_SH_PSM + (index * 6) + 4,
849 addrtmp[1]);
850 }
851 }
852 }
853
854 static void do_key_write(struct b43_wldev *dev,
855 u8 index, u8 algorithm,
856 const u8 * key, size_t key_len, const u8 * mac_addr)
857 {
858 u8 buf[B43_SEC_KEYSIZE] = { 0, };
859 u8 per_sta_keys_start = 8;
860
861 if (b43_new_kidx_api(dev))
862 per_sta_keys_start = 4;
863
864 B43_WARN_ON(index >= dev->max_nr_keys);
865 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
866
867 if (index >= per_sta_keys_start)
868 keymac_write(dev, index, NULL); /* First zero out mac. */
869 if (key)
870 memcpy(buf, key, key_len);
871 key_write(dev, index, algorithm, buf);
872 if (index >= per_sta_keys_start)
873 keymac_write(dev, index, mac_addr);
874
875 dev->key[index].algorithm = algorithm;
876 }
877
878 static int b43_key_write(struct b43_wldev *dev,
879 int index, u8 algorithm,
880 const u8 * key, size_t key_len,
881 const u8 * mac_addr,
882 struct ieee80211_key_conf *keyconf)
883 {
884 int i;
885 int sta_keys_start;
886
887 if (key_len > B43_SEC_KEYSIZE)
888 return -EINVAL;
889 for (i = 0; i < dev->max_nr_keys; i++) {
890 /* Check that we don't already have this key. */
891 B43_WARN_ON(dev->key[i].keyconf == keyconf);
892 }
893 if (index < 0) {
894 /* Either pairwise key or address is 00:00:00:00:00:00
895 * for transmit-only keys. Search the index. */
896 if (b43_new_kidx_api(dev))
897 sta_keys_start = 4;
898 else
899 sta_keys_start = 8;
900 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
901 if (!dev->key[i].keyconf) {
902 /* found empty */
903 index = i;
904 break;
905 }
906 }
907 if (index < 0) {
908 b43err(dev->wl, "Out of hardware key memory\n");
909 return -ENOSPC;
910 }
911 } else
912 B43_WARN_ON(index > 3);
913
914 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
915 if ((index <= 3) && !b43_new_kidx_api(dev)) {
916 /* Default RX key */
917 B43_WARN_ON(mac_addr);
918 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
919 }
920 keyconf->hw_key_idx = index;
921 dev->key[index].keyconf = keyconf;
922
923 return 0;
924 }
925
926 static int b43_key_clear(struct b43_wldev *dev, int index)
927 {
928 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
929 return -EINVAL;
930 do_key_write(dev, index, B43_SEC_ALGO_NONE,
931 NULL, B43_SEC_KEYSIZE, NULL);
932 if ((index <= 3) && !b43_new_kidx_api(dev)) {
933 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
934 NULL, B43_SEC_KEYSIZE, NULL);
935 }
936 dev->key[index].keyconf = NULL;
937
938 return 0;
939 }
940
941 static void b43_clear_keys(struct b43_wldev *dev)
942 {
943 int i;
944
945 for (i = 0; i < dev->max_nr_keys; i++)
946 b43_key_clear(dev, i);
947 }
948
949 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
950 {
951 u32 macctl;
952 u16 ucstat;
953 bool hwps;
954 bool awake;
955 int i;
956
957 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
958 (ps_flags & B43_PS_DISABLED));
959 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
960
961 if (ps_flags & B43_PS_ENABLED) {
962 hwps = 1;
963 } else if (ps_flags & B43_PS_DISABLED) {
964 hwps = 0;
965 } else {
966 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
967 // and thus is not an AP and we are associated, set bit 25
968 }
969 if (ps_flags & B43_PS_AWAKE) {
970 awake = 1;
971 } else if (ps_flags & B43_PS_ASLEEP) {
972 awake = 0;
973 } else {
974 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
975 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
976 // successful, set bit26
977 }
978
979 /* FIXME: For now we force awake-on and hwps-off */
980 hwps = 0;
981 awake = 1;
982
983 macctl = b43_read32(dev, B43_MMIO_MACCTL);
984 if (hwps)
985 macctl |= B43_MACCTL_HWPS;
986 else
987 macctl &= ~B43_MACCTL_HWPS;
988 if (awake)
989 macctl |= B43_MACCTL_AWAKE;
990 else
991 macctl &= ~B43_MACCTL_AWAKE;
992 b43_write32(dev, B43_MMIO_MACCTL, macctl);
993 /* Commit write */
994 b43_read32(dev, B43_MMIO_MACCTL);
995 if (awake && dev->dev->id.revision >= 5) {
996 /* Wait for the microcode to wake up. */
997 for (i = 0; i < 100; i++) {
998 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
999 B43_SHM_SH_UCODESTAT);
1000 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1001 break;
1002 udelay(10);
1003 }
1004 }
1005 }
1006
1007 /* Turn the Analog ON/OFF */
1008 static void b43_switch_analog(struct b43_wldev *dev, int on)
1009 {
1010 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
1011 }
1012
1013 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1014 {
1015 u32 tmslow;
1016 u32 macctl;
1017
1018 flags |= B43_TMSLOW_PHYCLKEN;
1019 flags |= B43_TMSLOW_PHYRESET;
1020 ssb_device_enable(dev->dev, flags);
1021 msleep(2); /* Wait for the PLL to turn on. */
1022
1023 /* Now take the PHY out of Reset again */
1024 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1025 tmslow |= SSB_TMSLOW_FGC;
1026 tmslow &= ~B43_TMSLOW_PHYRESET;
1027 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1028 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1029 msleep(1);
1030 tmslow &= ~SSB_TMSLOW_FGC;
1031 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1032 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1033 msleep(1);
1034
1035 /* Turn Analog ON */
1036 b43_switch_analog(dev, 1);
1037
1038 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1039 macctl &= ~B43_MACCTL_GMODE;
1040 if (flags & B43_TMSLOW_GMODE)
1041 macctl |= B43_MACCTL_GMODE;
1042 macctl |= B43_MACCTL_IHR_ENABLED;
1043 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1044 }
1045
1046 static void handle_irq_transmit_status(struct b43_wldev *dev)
1047 {
1048 u32 v0, v1;
1049 u16 tmp;
1050 struct b43_txstatus stat;
1051
1052 while (1) {
1053 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1054 if (!(v0 & 0x00000001))
1055 break;
1056 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1057
1058 stat.cookie = (v0 >> 16);
1059 stat.seq = (v1 & 0x0000FFFF);
1060 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1061 tmp = (v0 & 0x0000FFFF);
1062 stat.frame_count = ((tmp & 0xF000) >> 12);
1063 stat.rts_count = ((tmp & 0x0F00) >> 8);
1064 stat.supp_reason = ((tmp & 0x001C) >> 2);
1065 stat.pm_indicated = !!(tmp & 0x0080);
1066 stat.intermediate = !!(tmp & 0x0040);
1067 stat.for_ampdu = !!(tmp & 0x0020);
1068 stat.acked = !!(tmp & 0x0002);
1069
1070 b43_handle_txstatus(dev, &stat);
1071 }
1072 }
1073
1074 static void drain_txstatus_queue(struct b43_wldev *dev)
1075 {
1076 u32 dummy;
1077
1078 if (dev->dev->id.revision < 5)
1079 return;
1080 /* Read all entries from the microcode TXstatus FIFO
1081 * and throw them away.
1082 */
1083 while (1) {
1084 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1085 if (!(dummy & 0x00000001))
1086 break;
1087 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1088 }
1089 }
1090
1091 static u32 b43_jssi_read(struct b43_wldev *dev)
1092 {
1093 u32 val = 0;
1094
1095 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1096 val <<= 16;
1097 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1098
1099 return val;
1100 }
1101
1102 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1103 {
1104 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1105 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1106 }
1107
1108 static void b43_generate_noise_sample(struct b43_wldev *dev)
1109 {
1110 b43_jssi_write(dev, 0x7F7F7F7F);
1111 b43_write32(dev, B43_MMIO_MACCMD,
1112 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1113 B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1114 }
1115
1116 static void b43_calculate_link_quality(struct b43_wldev *dev)
1117 {
1118 /* Top half of Link Quality calculation. */
1119
1120 if (dev->noisecalc.calculation_running)
1121 return;
1122 dev->noisecalc.channel_at_start = dev->phy.channel;
1123 dev->noisecalc.calculation_running = 1;
1124 dev->noisecalc.nr_samples = 0;
1125
1126 b43_generate_noise_sample(dev);
1127 }
1128
1129 static void handle_irq_noise(struct b43_wldev *dev)
1130 {
1131 struct b43_phy *phy = &dev->phy;
1132 u16 tmp;
1133 u8 noise[4];
1134 u8 i, j;
1135 s32 average;
1136
1137 /* Bottom half of Link Quality calculation. */
1138
1139 B43_WARN_ON(!dev->noisecalc.calculation_running);
1140 if (dev->noisecalc.channel_at_start != phy->channel)
1141 goto drop_calculation;
1142 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1143 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1144 noise[2] == 0x7F || noise[3] == 0x7F)
1145 goto generate_new;
1146
1147 /* Get the noise samples. */
1148 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1149 i = dev->noisecalc.nr_samples;
1150 noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1151 noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1152 noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1153 noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1154 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1155 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1156 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1157 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1158 dev->noisecalc.nr_samples++;
1159 if (dev->noisecalc.nr_samples == 8) {
1160 /* Calculate the Link Quality by the noise samples. */
1161 average = 0;
1162 for (i = 0; i < 8; i++) {
1163 for (j = 0; j < 4; j++)
1164 average += dev->noisecalc.samples[i][j];
1165 }
1166 average /= (8 * 4);
1167 average *= 125;
1168 average += 64;
1169 average /= 128;
1170 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1171 tmp = (tmp / 128) & 0x1F;
1172 if (tmp >= 8)
1173 average += 2;
1174 else
1175 average -= 25;
1176 if (tmp == 8)
1177 average -= 72;
1178 else
1179 average -= 48;
1180
1181 dev->stats.link_noise = average;
1182 drop_calculation:
1183 dev->noisecalc.calculation_running = 0;
1184 return;
1185 }
1186 generate_new:
1187 b43_generate_noise_sample(dev);
1188 }
1189
1190 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1191 {
1192 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1193 ///TODO: PS TBTT
1194 } else {
1195 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1196 b43_power_saving_ctl_bits(dev, 0);
1197 }
1198 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1199 dev->dfq_valid = 1;
1200 }
1201
1202 static void handle_irq_atim_end(struct b43_wldev *dev)
1203 {
1204 if (dev->dfq_valid) {
1205 b43_write32(dev, B43_MMIO_MACCMD,
1206 b43_read32(dev, B43_MMIO_MACCMD)
1207 | B43_MACCMD_DFQ_VALID);
1208 dev->dfq_valid = 0;
1209 }
1210 }
1211
1212 static void handle_irq_pmq(struct b43_wldev *dev)
1213 {
1214 u32 tmp;
1215
1216 //TODO: AP mode.
1217
1218 while (1) {
1219 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1220 if (!(tmp & 0x00000008))
1221 break;
1222 }
1223 /* 16bit write is odd, but correct. */
1224 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1225 }
1226
1227 static void b43_write_template_common(struct b43_wldev *dev,
1228 const u8 * data, u16 size,
1229 u16 ram_offset,
1230 u16 shm_size_offset, u8 rate)
1231 {
1232 u32 i, tmp;
1233 struct b43_plcp_hdr4 plcp;
1234
1235 plcp.data = 0;
1236 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1237 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1238 ram_offset += sizeof(u32);
1239 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1240 * So leave the first two bytes of the next write blank.
1241 */
1242 tmp = (u32) (data[0]) << 16;
1243 tmp |= (u32) (data[1]) << 24;
1244 b43_ram_write(dev, ram_offset, tmp);
1245 ram_offset += sizeof(u32);
1246 for (i = 2; i < size; i += sizeof(u32)) {
1247 tmp = (u32) (data[i + 0]);
1248 if (i + 1 < size)
1249 tmp |= (u32) (data[i + 1]) << 8;
1250 if (i + 2 < size)
1251 tmp |= (u32) (data[i + 2]) << 16;
1252 if (i + 3 < size)
1253 tmp |= (u32) (data[i + 3]) << 24;
1254 b43_ram_write(dev, ram_offset + i - 2, tmp);
1255 }
1256 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1257 size + sizeof(struct b43_plcp_hdr6));
1258 }
1259
1260 static void b43_write_beacon_template(struct b43_wldev *dev,
1261 u16 ram_offset,
1262 u16 shm_size_offset, u8 rate)
1263 {
1264 unsigned int i, len, variable_len;
1265 const struct ieee80211_mgmt *bcn;
1266 const u8 *ie;
1267 bool tim_found = 0;
1268
1269 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1270 len = min((size_t) dev->wl->current_beacon->len,
1271 0x200 - sizeof(struct b43_plcp_hdr6));
1272
1273 b43_write_template_common(dev, (const u8 *)bcn,
1274 len, ram_offset, shm_size_offset, rate);
1275
1276 /* Find the position of the TIM and the DTIM_period value
1277 * and write them to SHM. */
1278 ie = bcn->u.beacon.variable;
1279 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1280 for (i = 0; i < variable_len - 2; ) {
1281 uint8_t ie_id, ie_len;
1282
1283 ie_id = ie[i];
1284 ie_len = ie[i + 1];
1285 if (ie_id == 5) {
1286 u16 tim_position;
1287 u16 dtim_period;
1288 /* This is the TIM Information Element */
1289
1290 /* Check whether the ie_len is in the beacon data range. */
1291 if (variable_len < ie_len + 2 + i)
1292 break;
1293 /* A valid TIM is at least 4 bytes long. */
1294 if (ie_len < 4)
1295 break;
1296 tim_found = 1;
1297
1298 tim_position = sizeof(struct b43_plcp_hdr6);
1299 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1300 tim_position += i;
1301
1302 dtim_period = ie[i + 3];
1303
1304 b43_shm_write16(dev, B43_SHM_SHARED,
1305 B43_SHM_SH_TIMBPOS, tim_position);
1306 b43_shm_write16(dev, B43_SHM_SHARED,
1307 B43_SHM_SH_DTIMPER, dtim_period);
1308 break;
1309 }
1310 i += ie_len + 2;
1311 }
1312 if (!tim_found) {
1313 b43warn(dev->wl, "Did not find a valid TIM IE in "
1314 "the beacon template packet. AP or IBSS operation "
1315 "may be broken.\n");
1316 }
1317 }
1318
1319 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1320 u16 shm_offset, u16 size,
1321 struct ieee80211_rate *rate)
1322 {
1323 struct b43_plcp_hdr4 plcp;
1324 u32 tmp;
1325 __le16 dur;
1326
1327 plcp.data = 0;
1328 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1329 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1330 dev->wl->vif, size,
1331 rate);
1332 /* Write PLCP in two parts and timing for packet transfer */
1333 tmp = le32_to_cpu(plcp.data);
1334 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1335 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1336 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1337 }
1338
1339 /* Instead of using custom probe response template, this function
1340 * just patches custom beacon template by:
1341 * 1) Changing packet type
1342 * 2) Patching duration field
1343 * 3) Stripping TIM
1344 */
1345 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1346 u16 *dest_size,
1347 struct ieee80211_rate *rate)
1348 {
1349 const u8 *src_data;
1350 u8 *dest_data;
1351 u16 src_size, elem_size, src_pos, dest_pos;
1352 __le16 dur;
1353 struct ieee80211_hdr *hdr;
1354 size_t ie_start;
1355
1356 src_size = dev->wl->current_beacon->len;
1357 src_data = (const u8 *)dev->wl->current_beacon->data;
1358
1359 /* Get the start offset of the variable IEs in the packet. */
1360 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1361 B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1362
1363 if (B43_WARN_ON(src_size < ie_start))
1364 return NULL;
1365
1366 dest_data = kmalloc(src_size, GFP_ATOMIC);
1367 if (unlikely(!dest_data))
1368 return NULL;
1369
1370 /* Copy the static data and all Information Elements, except the TIM. */
1371 memcpy(dest_data, src_data, ie_start);
1372 src_pos = ie_start;
1373 dest_pos = ie_start;
1374 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1375 elem_size = src_data[src_pos + 1] + 2;
1376 if (src_data[src_pos] == 5) {
1377 /* This is the TIM. */
1378 continue;
1379 }
1380 memcpy(dest_data + dest_pos, src_data + src_pos,
1381 elem_size);
1382 dest_pos += elem_size;
1383 }
1384 *dest_size = dest_pos;
1385 hdr = (struct ieee80211_hdr *)dest_data;
1386
1387 /* Set the frame control. */
1388 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1389 IEEE80211_STYPE_PROBE_RESP);
1390 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1391 dev->wl->vif, *dest_size,
1392 rate);
1393 hdr->duration_id = dur;
1394
1395 return dest_data;
1396 }
1397
1398 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1399 u16 ram_offset,
1400 u16 shm_size_offset,
1401 struct ieee80211_rate *rate)
1402 {
1403 const u8 *probe_resp_data;
1404 u16 size;
1405
1406 size = dev->wl->current_beacon->len;
1407 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1408 if (unlikely(!probe_resp_data))
1409 return;
1410
1411 /* Looks like PLCP headers plus packet timings are stored for
1412 * all possible basic rates
1413 */
1414 b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1415 b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1416 b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1417 b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1418
1419 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1420 b43_write_template_common(dev, probe_resp_data,
1421 size, ram_offset, shm_size_offset,
1422 rate->hw_value);
1423 kfree(probe_resp_data);
1424 }
1425
1426 /* Asynchronously update the packet templates in template RAM.
1427 * Locking: Requires wl->irq_lock to be locked. */
1428 static void b43_update_templates(struct b43_wl *wl, struct sk_buff *beacon)
1429 {
1430 /* This is the top half of the ansynchronous beacon update.
1431 * The bottom half is the beacon IRQ.
1432 * Beacon update must be asynchronous to avoid sending an
1433 * invalid beacon. This can happen for example, if the firmware
1434 * transmits a beacon while we are updating it. */
1435
1436 if (wl->current_beacon)
1437 dev_kfree_skb_any(wl->current_beacon);
1438 wl->current_beacon = beacon;
1439 wl->beacon0_uploaded = 0;
1440 wl->beacon1_uploaded = 0;
1441 }
1442
1443 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1444 {
1445 u32 tmp;
1446 u16 i, len;
1447
1448 len = min((u16) ssid_len, (u16) 0x100);
1449 for (i = 0; i < len; i += sizeof(u32)) {
1450 tmp = (u32) (ssid[i + 0]);
1451 if (i + 1 < len)
1452 tmp |= (u32) (ssid[i + 1]) << 8;
1453 if (i + 2 < len)
1454 tmp |= (u32) (ssid[i + 2]) << 16;
1455 if (i + 3 < len)
1456 tmp |= (u32) (ssid[i + 3]) << 24;
1457 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1458 }
1459 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1460 }
1461
1462 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1463 {
1464 b43_time_lock(dev);
1465 if (dev->dev->id.revision >= 3) {
1466 b43_write32(dev, 0x188, (beacon_int << 16));
1467 } else {
1468 b43_write16(dev, 0x606, (beacon_int >> 6));
1469 b43_write16(dev, 0x610, beacon_int);
1470 }
1471 b43_time_unlock(dev);
1472 }
1473
1474 static void handle_irq_beacon(struct b43_wldev *dev)
1475 {
1476 struct b43_wl *wl = dev->wl;
1477 u32 cmd;
1478
1479 if (!b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
1480 return;
1481
1482 /* This is the bottom half of the asynchronous beacon update. */
1483
1484 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1485 if (!(cmd & B43_MACCMD_BEACON0_VALID)) {
1486 if (!wl->beacon0_uploaded) {
1487 b43_write_beacon_template(dev, 0x68, 0x18,
1488 B43_CCK_RATE_1MB);
1489 b43_write_probe_resp_template(dev, 0x268, 0x4A,
1490 &__b43_ratetable[3]);
1491 wl->beacon0_uploaded = 1;
1492 }
1493 cmd |= B43_MACCMD_BEACON0_VALID;
1494 }
1495 if (!(cmd & B43_MACCMD_BEACON1_VALID)) {
1496 if (!wl->beacon1_uploaded) {
1497 b43_write_beacon_template(dev, 0x468, 0x1A,
1498 B43_CCK_RATE_1MB);
1499 wl->beacon1_uploaded = 1;
1500 }
1501 cmd |= B43_MACCMD_BEACON1_VALID;
1502 }
1503 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1504 }
1505
1506 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1507 {
1508 //TODO
1509 }
1510
1511 /* Interrupt handler bottom-half */
1512 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1513 {
1514 u32 reason;
1515 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1516 u32 merged_dma_reason = 0;
1517 int i;
1518 unsigned long flags;
1519
1520 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1521
1522 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1523
1524 reason = dev->irq_reason;
1525 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1526 dma_reason[i] = dev->dma_reason[i];
1527 merged_dma_reason |= dma_reason[i];
1528 }
1529
1530 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1531 b43err(dev->wl, "MAC transmission error\n");
1532
1533 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1534 b43err(dev->wl, "PHY transmission error\n");
1535 rmb();
1536 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1537 atomic_set(&dev->phy.txerr_cnt,
1538 B43_PHY_TX_BADNESS_LIMIT);
1539 b43err(dev->wl, "Too many PHY TX errors, "
1540 "restarting the controller\n");
1541 b43_controller_restart(dev, "PHY TX errors");
1542 }
1543 }
1544
1545 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1546 B43_DMAIRQ_NONFATALMASK))) {
1547 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1548 b43err(dev->wl, "Fatal DMA error: "
1549 "0x%08X, 0x%08X, 0x%08X, "
1550 "0x%08X, 0x%08X, 0x%08X\n",
1551 dma_reason[0], dma_reason[1],
1552 dma_reason[2], dma_reason[3],
1553 dma_reason[4], dma_reason[5]);
1554 b43_controller_restart(dev, "DMA error");
1555 mmiowb();
1556 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1557 return;
1558 }
1559 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1560 b43err(dev->wl, "DMA error: "
1561 "0x%08X, 0x%08X, 0x%08X, "
1562 "0x%08X, 0x%08X, 0x%08X\n",
1563 dma_reason[0], dma_reason[1],
1564 dma_reason[2], dma_reason[3],
1565 dma_reason[4], dma_reason[5]);
1566 }
1567 }
1568
1569 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1570 handle_irq_ucode_debug(dev);
1571 if (reason & B43_IRQ_TBTT_INDI)
1572 handle_irq_tbtt_indication(dev);
1573 if (reason & B43_IRQ_ATIM_END)
1574 handle_irq_atim_end(dev);
1575 if (reason & B43_IRQ_BEACON)
1576 handle_irq_beacon(dev);
1577 if (reason & B43_IRQ_PMQ)
1578 handle_irq_pmq(dev);
1579 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1580 ;/* TODO */
1581 if (reason & B43_IRQ_NOISESAMPLE_OK)
1582 handle_irq_noise(dev);
1583
1584 /* Check the DMA reason registers for received data. */
1585 if (dma_reason[0] & B43_DMAIRQ_RX_DONE)
1586 b43_dma_rx(dev->dma.rx_ring0);
1587 if (dma_reason[3] & B43_DMAIRQ_RX_DONE)
1588 b43_dma_rx(dev->dma.rx_ring3);
1589 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1590 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1591 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1592 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1593
1594 if (reason & B43_IRQ_TX_OK)
1595 handle_irq_transmit_status(dev);
1596
1597 b43_interrupt_enable(dev, dev->irq_savedstate);
1598 mmiowb();
1599 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1600 }
1601
1602 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1603 {
1604 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1605
1606 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1607 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1608 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1609 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1610 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1611 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1612 }
1613
1614 /* Interrupt handler top-half */
1615 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1616 {
1617 irqreturn_t ret = IRQ_NONE;
1618 struct b43_wldev *dev = dev_id;
1619 u32 reason;
1620
1621 if (!dev)
1622 return IRQ_NONE;
1623
1624 spin_lock(&dev->wl->irq_lock);
1625
1626 if (b43_status(dev) < B43_STAT_STARTED)
1627 goto out;
1628 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1629 if (reason == 0xffffffff) /* shared IRQ */
1630 goto out;
1631 ret = IRQ_HANDLED;
1632 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1633 if (!reason)
1634 goto out;
1635
1636 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1637 & 0x0001DC00;
1638 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1639 & 0x0000DC00;
1640 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1641 & 0x0000DC00;
1642 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1643 & 0x0001DC00;
1644 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1645 & 0x0000DC00;
1646 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1647 & 0x0000DC00;
1648
1649 b43_interrupt_ack(dev, reason);
1650 /* disable all IRQs. They are enabled again in the bottom half. */
1651 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1652 /* save the reason code and call our bottom half. */
1653 dev->irq_reason = reason;
1654 tasklet_schedule(&dev->isr_tasklet);
1655 out:
1656 mmiowb();
1657 spin_unlock(&dev->wl->irq_lock);
1658
1659 return ret;
1660 }
1661
1662 static void do_release_fw(struct b43_firmware_file *fw)
1663 {
1664 release_firmware(fw->data);
1665 fw->data = NULL;
1666 fw->filename = NULL;
1667 }
1668
1669 static void b43_release_firmware(struct b43_wldev *dev)
1670 {
1671 do_release_fw(&dev->fw.ucode);
1672 do_release_fw(&dev->fw.pcm);
1673 do_release_fw(&dev->fw.initvals);
1674 do_release_fw(&dev->fw.initvals_band);
1675 }
1676
1677 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1678 {
1679 const char *text;
1680
1681 text = "You must go to "
1682 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1683 "and download the latest firmware (version 4).\n";
1684 if (error)
1685 b43err(wl, text);
1686 else
1687 b43warn(wl, text);
1688 }
1689
1690 static int do_request_fw(struct b43_wldev *dev,
1691 const char *name,
1692 struct b43_firmware_file *fw)
1693 {
1694 char path[sizeof(modparam_fwpostfix) + 32];
1695 const struct firmware *blob;
1696 struct b43_fw_header *hdr;
1697 u32 size;
1698 int err;
1699
1700 if (!name) {
1701 /* Don't fetch anything. Free possibly cached firmware. */
1702 do_release_fw(fw);
1703 return 0;
1704 }
1705 if (fw->filename) {
1706 if (strcmp(fw->filename, name) == 0)
1707 return 0; /* Already have this fw. */
1708 /* Free the cached firmware first. */
1709 do_release_fw(fw);
1710 }
1711
1712 snprintf(path, ARRAY_SIZE(path),
1713 "b43%s/%s.fw",
1714 modparam_fwpostfix, name);
1715 err = request_firmware(&blob, path, dev->dev->dev);
1716 if (err) {
1717 b43err(dev->wl, "Firmware file \"%s\" not found "
1718 "or load failed.\n", path);
1719 return err;
1720 }
1721 if (blob->size < sizeof(struct b43_fw_header))
1722 goto err_format;
1723 hdr = (struct b43_fw_header *)(blob->data);
1724 switch (hdr->type) {
1725 case B43_FW_TYPE_UCODE:
1726 case B43_FW_TYPE_PCM:
1727 size = be32_to_cpu(hdr->size);
1728 if (size != blob->size - sizeof(struct b43_fw_header))
1729 goto err_format;
1730 /* fallthrough */
1731 case B43_FW_TYPE_IV:
1732 if (hdr->ver != 1)
1733 goto err_format;
1734 break;
1735 default:
1736 goto err_format;
1737 }
1738
1739 fw->data = blob;
1740 fw->filename = name;
1741
1742 return 0;
1743
1744 err_format:
1745 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1746 release_firmware(blob);
1747
1748 return -EPROTO;
1749 }
1750
1751 static int b43_request_firmware(struct b43_wldev *dev)
1752 {
1753 struct b43_firmware *fw = &dev->fw;
1754 const u8 rev = dev->dev->id.revision;
1755 const char *filename;
1756 u32 tmshigh;
1757 int err;
1758
1759 /* Get microcode */
1760 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1761 if ((rev >= 5) && (rev <= 10))
1762 filename = "ucode5";
1763 else if ((rev >= 11) && (rev <= 12))
1764 filename = "ucode11";
1765 else if (rev >= 13)
1766 filename = "ucode13";
1767 else
1768 goto err_no_ucode;
1769 err = do_request_fw(dev, filename, &fw->ucode);
1770 if (err)
1771 goto err_load;
1772
1773 /* Get PCM code */
1774 if ((rev >= 5) && (rev <= 10))
1775 filename = "pcm5";
1776 else if (rev >= 11)
1777 filename = NULL;
1778 else
1779 goto err_no_pcm;
1780 err = do_request_fw(dev, filename, &fw->pcm);
1781 if (err)
1782 goto err_load;
1783
1784 /* Get initvals */
1785 switch (dev->phy.type) {
1786 case B43_PHYTYPE_A:
1787 if ((rev >= 5) && (rev <= 10)) {
1788 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
1789 filename = "a0g1initvals5";
1790 else
1791 filename = "a0g0initvals5";
1792 } else
1793 goto err_no_initvals;
1794 break;
1795 case B43_PHYTYPE_G:
1796 if ((rev >= 5) && (rev <= 10))
1797 filename = "b0g0initvals5";
1798 else if (rev >= 13)
1799 filename = "lp0initvals13";
1800 else
1801 goto err_no_initvals;
1802 break;
1803 case B43_PHYTYPE_N:
1804 if ((rev >= 11) && (rev <= 12))
1805 filename = "n0initvals11";
1806 else
1807 goto err_no_initvals;
1808 break;
1809 default:
1810 goto err_no_initvals;
1811 }
1812 err = do_request_fw(dev, filename, &fw->initvals);
1813 if (err)
1814 goto err_load;
1815
1816 /* Get bandswitch initvals */
1817 switch (dev->phy.type) {
1818 case B43_PHYTYPE_A:
1819 if ((rev >= 5) && (rev <= 10)) {
1820 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
1821 filename = "a0g1bsinitvals5";
1822 else
1823 filename = "a0g0bsinitvals5";
1824 } else if (rev >= 11)
1825 filename = NULL;
1826 else
1827 goto err_no_initvals;
1828 break;
1829 case B43_PHYTYPE_G:
1830 if ((rev >= 5) && (rev <= 10))
1831 filename = "b0g0bsinitvals5";
1832 else if (rev >= 11)
1833 filename = NULL;
1834 else
1835 goto err_no_initvals;
1836 break;
1837 case B43_PHYTYPE_N:
1838 if ((rev >= 11) && (rev <= 12))
1839 filename = "n0bsinitvals11";
1840 else
1841 goto err_no_initvals;
1842 break;
1843 default:
1844 goto err_no_initvals;
1845 }
1846 err = do_request_fw(dev, filename, &fw->initvals_band);
1847 if (err)
1848 goto err_load;
1849
1850 return 0;
1851
1852 err_load:
1853 b43_print_fw_helptext(dev->wl, 1);
1854 goto error;
1855
1856 err_no_ucode:
1857 err = -ENODEV;
1858 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
1859 goto error;
1860
1861 err_no_pcm:
1862 err = -ENODEV;
1863 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
1864 goto error;
1865
1866 err_no_initvals:
1867 err = -ENODEV;
1868 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
1869 "core rev %u\n", dev->phy.type, rev);
1870 goto error;
1871
1872 error:
1873 b43_release_firmware(dev);
1874 return err;
1875 }
1876
1877 static int b43_upload_microcode(struct b43_wldev *dev)
1878 {
1879 const size_t hdr_len = sizeof(struct b43_fw_header);
1880 const __be32 *data;
1881 unsigned int i, len;
1882 u16 fwrev, fwpatch, fwdate, fwtime;
1883 u32 tmp, macctl;
1884 int err = 0;
1885
1886 /* Jump the microcode PSM to offset 0 */
1887 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1888 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
1889 macctl |= B43_MACCTL_PSM_JMP0;
1890 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1891 /* Zero out all microcode PSM registers and shared memory. */
1892 for (i = 0; i < 64; i++)
1893 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
1894 for (i = 0; i < 4096; i += 2)
1895 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
1896
1897 /* Upload Microcode. */
1898 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
1899 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
1900 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
1901 for (i = 0; i < len; i++) {
1902 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1903 udelay(10);
1904 }
1905
1906 if (dev->fw.pcm.data) {
1907 /* Upload PCM data. */
1908 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
1909 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
1910 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
1911 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
1912 /* No need for autoinc bit in SHM_HW */
1913 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
1914 for (i = 0; i < len; i++) {
1915 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1916 udelay(10);
1917 }
1918 }
1919
1920 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
1921
1922 /* Start the microcode PSM */
1923 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1924 macctl &= ~B43_MACCTL_PSM_JMP0;
1925 macctl |= B43_MACCTL_PSM_RUN;
1926 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1927
1928 /* Wait for the microcode to load and respond */
1929 i = 0;
1930 while (1) {
1931 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1932 if (tmp == B43_IRQ_MAC_SUSPENDED)
1933 break;
1934 i++;
1935 if (i >= 20) {
1936 b43err(dev->wl, "Microcode not responding\n");
1937 b43_print_fw_helptext(dev->wl, 1);
1938 err = -ENODEV;
1939 goto error;
1940 }
1941 msleep_interruptible(50);
1942 if (signal_pending(current)) {
1943 err = -EINTR;
1944 goto error;
1945 }
1946 }
1947 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
1948
1949 /* Get and check the revisions. */
1950 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
1951 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
1952 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
1953 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
1954
1955 if (fwrev <= 0x128) {
1956 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
1957 "binary drivers older than version 4.x is unsupported. "
1958 "You must upgrade your firmware files.\n");
1959 b43_print_fw_helptext(dev->wl, 1);
1960 err = -EOPNOTSUPP;
1961 goto error;
1962 }
1963 b43info(dev->wl, "Loading firmware version %u.%u "
1964 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
1965 fwrev, fwpatch,
1966 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1967 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
1968
1969 dev->fw.rev = fwrev;
1970 dev->fw.patch = fwpatch;
1971
1972 if (b43_is_old_txhdr_format(dev)) {
1973 b43warn(dev->wl, "You are using an old firmware image. "
1974 "Support for old firmware will be removed in July 2008.\n");
1975 b43_print_fw_helptext(dev->wl, 0);
1976 }
1977
1978 return 0;
1979
1980 error:
1981 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1982 macctl &= ~B43_MACCTL_PSM_RUN;
1983 macctl |= B43_MACCTL_PSM_JMP0;
1984 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1985
1986 return err;
1987 }
1988
1989 static int b43_write_initvals(struct b43_wldev *dev,
1990 const struct b43_iv *ivals,
1991 size_t count,
1992 size_t array_size)
1993 {
1994 const struct b43_iv *iv;
1995 u16 offset;
1996 size_t i;
1997 bool bit32;
1998
1999 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2000 iv = ivals;
2001 for (i = 0; i < count; i++) {
2002 if (array_size < sizeof(iv->offset_size))
2003 goto err_format;
2004 array_size -= sizeof(iv->offset_size);
2005 offset = be16_to_cpu(iv->offset_size);
2006 bit32 = !!(offset & B43_IV_32BIT);
2007 offset &= B43_IV_OFFSET_MASK;
2008 if (offset >= 0x1000)
2009 goto err_format;
2010 if (bit32) {
2011 u32 value;
2012
2013 if (array_size < sizeof(iv->data.d32))
2014 goto err_format;
2015 array_size -= sizeof(iv->data.d32);
2016
2017 value = be32_to_cpu(get_unaligned(&iv->data.d32));
2018 b43_write32(dev, offset, value);
2019
2020 iv = (const struct b43_iv *)((const uint8_t *)iv +
2021 sizeof(__be16) +
2022 sizeof(__be32));
2023 } else {
2024 u16 value;
2025
2026 if (array_size < sizeof(iv->data.d16))
2027 goto err_format;
2028 array_size -= sizeof(iv->data.d16);
2029
2030 value = be16_to_cpu(iv->data.d16);
2031 b43_write16(dev, offset, value);
2032
2033 iv = (const struct b43_iv *)((const uint8_t *)iv +
2034 sizeof(__be16) +
2035 sizeof(__be16));
2036 }
2037 }
2038 if (array_size)
2039 goto err_format;
2040
2041 return 0;
2042
2043 err_format:
2044 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2045 b43_print_fw_helptext(dev->wl, 1);
2046
2047 return -EPROTO;
2048 }
2049
2050 static int b43_upload_initvals(struct b43_wldev *dev)
2051 {
2052 const size_t hdr_len = sizeof(struct b43_fw_header);
2053 const struct b43_fw_header *hdr;
2054 struct b43_firmware *fw = &dev->fw;
2055 const struct b43_iv *ivals;
2056 size_t count;
2057 int err;
2058
2059 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2060 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2061 count = be32_to_cpu(hdr->size);
2062 err = b43_write_initvals(dev, ivals, count,
2063 fw->initvals.data->size - hdr_len);
2064 if (err)
2065 goto out;
2066 if (fw->initvals_band.data) {
2067 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2068 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2069 count = be32_to_cpu(hdr->size);
2070 err = b43_write_initvals(dev, ivals, count,
2071 fw->initvals_band.data->size - hdr_len);
2072 if (err)
2073 goto out;
2074 }
2075 out:
2076
2077 return err;
2078 }
2079
2080 /* Initialize the GPIOs
2081 * http://bcm-specs.sipsolutions.net/GPIO
2082 */
2083 static int b43_gpio_init(struct b43_wldev *dev)
2084 {
2085 struct ssb_bus *bus = dev->dev->bus;
2086 struct ssb_device *gpiodev, *pcidev = NULL;
2087 u32 mask, set;
2088
2089 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2090 & ~B43_MACCTL_GPOUTSMSK);
2091
2092 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2093 | 0x000F);
2094
2095 mask = 0x0000001F;
2096 set = 0x0000000F;
2097 if (dev->dev->bus->chip_id == 0x4301) {
2098 mask |= 0x0060;
2099 set |= 0x0060;
2100 }
2101 if (0 /* FIXME: conditional unknown */ ) {
2102 b43_write16(dev, B43_MMIO_GPIO_MASK,
2103 b43_read16(dev, B43_MMIO_GPIO_MASK)
2104 | 0x0100);
2105 mask |= 0x0180;
2106 set |= 0x0180;
2107 }
2108 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2109 b43_write16(dev, B43_MMIO_GPIO_MASK,
2110 b43_read16(dev, B43_MMIO_GPIO_MASK)
2111 | 0x0200);
2112 mask |= 0x0200;
2113 set |= 0x0200;
2114 }
2115 if (dev->dev->id.revision >= 2)
2116 mask |= 0x0010; /* FIXME: This is redundant. */
2117
2118 #ifdef CONFIG_SSB_DRIVER_PCICORE
2119 pcidev = bus->pcicore.dev;
2120 #endif
2121 gpiodev = bus->chipco.dev ? : pcidev;
2122 if (!gpiodev)
2123 return 0;
2124 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2125 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2126 & mask) | set);
2127
2128 return 0;
2129 }
2130
2131 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2132 static void b43_gpio_cleanup(struct b43_wldev *dev)
2133 {
2134 struct ssb_bus *bus = dev->dev->bus;
2135 struct ssb_device *gpiodev, *pcidev = NULL;
2136
2137 #ifdef CONFIG_SSB_DRIVER_PCICORE
2138 pcidev = bus->pcicore.dev;
2139 #endif
2140 gpiodev = bus->chipco.dev ? : pcidev;
2141 if (!gpiodev)
2142 return;
2143 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2144 }
2145
2146 /* http://bcm-specs.sipsolutions.net/EnableMac */
2147 void b43_mac_enable(struct b43_wldev *dev)
2148 {
2149 dev->mac_suspended--;
2150 B43_WARN_ON(dev->mac_suspended < 0);
2151 B43_WARN_ON(irqs_disabled());
2152 if (dev->mac_suspended == 0) {
2153 b43_write32(dev, B43_MMIO_MACCTL,
2154 b43_read32(dev, B43_MMIO_MACCTL)
2155 | B43_MACCTL_ENABLED);
2156 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2157 B43_IRQ_MAC_SUSPENDED);
2158 /* Commit writes */
2159 b43_read32(dev, B43_MMIO_MACCTL);
2160 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2161 b43_power_saving_ctl_bits(dev, 0);
2162
2163 /* Re-enable IRQs. */
2164 spin_lock_irq(&dev->wl->irq_lock);
2165 b43_interrupt_enable(dev, dev->irq_savedstate);
2166 spin_unlock_irq(&dev->wl->irq_lock);
2167 }
2168 }
2169
2170 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2171 void b43_mac_suspend(struct b43_wldev *dev)
2172 {
2173 int i;
2174 u32 tmp;
2175
2176 might_sleep();
2177 B43_WARN_ON(irqs_disabled());
2178 B43_WARN_ON(dev->mac_suspended < 0);
2179
2180 if (dev->mac_suspended == 0) {
2181 /* Mask IRQs before suspending MAC. Otherwise
2182 * the MAC stays busy and won't suspend. */
2183 spin_lock_irq(&dev->wl->irq_lock);
2184 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
2185 spin_unlock_irq(&dev->wl->irq_lock);
2186 b43_synchronize_irq(dev);
2187 dev->irq_savedstate = tmp;
2188
2189 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2190 b43_write32(dev, B43_MMIO_MACCTL,
2191 b43_read32(dev, B43_MMIO_MACCTL)
2192 & ~B43_MACCTL_ENABLED);
2193 /* force pci to flush the write */
2194 b43_read32(dev, B43_MMIO_MACCTL);
2195 for (i = 40; i; i--) {
2196 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2197 if (tmp & B43_IRQ_MAC_SUSPENDED)
2198 goto out;
2199 msleep(1);
2200 }
2201 b43err(dev->wl, "MAC suspend failed\n");
2202 }
2203 out:
2204 dev->mac_suspended++;
2205 }
2206
2207 static void b43_adjust_opmode(struct b43_wldev *dev)
2208 {
2209 struct b43_wl *wl = dev->wl;
2210 u32 ctl;
2211 u16 cfp_pretbtt;
2212
2213 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2214 /* Reset status to STA infrastructure mode. */
2215 ctl &= ~B43_MACCTL_AP;
2216 ctl &= ~B43_MACCTL_KEEP_CTL;
2217 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2218 ctl &= ~B43_MACCTL_KEEP_BAD;
2219 ctl &= ~B43_MACCTL_PROMISC;
2220 ctl &= ~B43_MACCTL_BEACPROMISC;
2221 ctl |= B43_MACCTL_INFRA;
2222
2223 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2224 ctl |= B43_MACCTL_AP;
2225 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2226 ctl &= ~B43_MACCTL_INFRA;
2227
2228 if (wl->filter_flags & FIF_CONTROL)
2229 ctl |= B43_MACCTL_KEEP_CTL;
2230 if (wl->filter_flags & FIF_FCSFAIL)
2231 ctl |= B43_MACCTL_KEEP_BAD;
2232 if (wl->filter_flags & FIF_PLCPFAIL)
2233 ctl |= B43_MACCTL_KEEP_BADPLCP;
2234 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2235 ctl |= B43_MACCTL_PROMISC;
2236 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2237 ctl |= B43_MACCTL_BEACPROMISC;
2238
2239 /* Workaround: On old hardware the HW-MAC-address-filter
2240 * doesn't work properly, so always run promisc in filter
2241 * it in software. */
2242 if (dev->dev->id.revision <= 4)
2243 ctl |= B43_MACCTL_PROMISC;
2244
2245 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2246
2247 cfp_pretbtt = 2;
2248 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2249 if (dev->dev->bus->chip_id == 0x4306 &&
2250 dev->dev->bus->chip_rev == 3)
2251 cfp_pretbtt = 100;
2252 else
2253 cfp_pretbtt = 50;
2254 }
2255 b43_write16(dev, 0x612, cfp_pretbtt);
2256 }
2257
2258 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2259 {
2260 u16 offset;
2261
2262 if (is_ofdm) {
2263 offset = 0x480;
2264 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2265 } else {
2266 offset = 0x4C0;
2267 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2268 }
2269 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2270 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2271 }
2272
2273 static void b43_rate_memory_init(struct b43_wldev *dev)
2274 {
2275 switch (dev->phy.type) {
2276 case B43_PHYTYPE_A:
2277 case B43_PHYTYPE_G:
2278 case B43_PHYTYPE_N:
2279 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2280 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2281 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2282 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2283 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2284 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2285 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2286 if (dev->phy.type == B43_PHYTYPE_A)
2287 break;
2288 /* fallthrough */
2289 case B43_PHYTYPE_B:
2290 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2291 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2292 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2293 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2294 break;
2295 default:
2296 B43_WARN_ON(1);
2297 }
2298 }
2299
2300 /* Set the TX-Antenna for management frames sent by firmware. */
2301 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2302 {
2303 u16 ant = 0;
2304 u16 tmp;
2305
2306 switch (antenna) {
2307 case B43_ANTENNA0:
2308 ant |= B43_TXH_PHY_ANT0;
2309 break;
2310 case B43_ANTENNA1:
2311 ant |= B43_TXH_PHY_ANT1;
2312 break;
2313 case B43_ANTENNA2:
2314 ant |= B43_TXH_PHY_ANT2;
2315 break;
2316 case B43_ANTENNA3:
2317 ant |= B43_TXH_PHY_ANT3;
2318 break;
2319 case B43_ANTENNA_AUTO:
2320 ant |= B43_TXH_PHY_ANT01AUTO;
2321 break;
2322 default:
2323 B43_WARN_ON(1);
2324 }
2325
2326 /* FIXME We also need to set the other flags of the PHY control field somewhere. */
2327
2328 /* For Beacons */
2329 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
2330 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2331 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
2332 /* For ACK/CTS */
2333 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2334 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2335 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2336 /* For Probe Resposes */
2337 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2338 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2339 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2340 }
2341
2342 /* This is the opposite of b43_chip_init() */
2343 static void b43_chip_exit(struct b43_wldev *dev)
2344 {
2345 b43_radio_turn_off(dev, 1);
2346 b43_gpio_cleanup(dev);
2347 /* firmware is released later */
2348 }
2349
2350 /* Initialize the chip
2351 * http://bcm-specs.sipsolutions.net/ChipInit
2352 */
2353 static int b43_chip_init(struct b43_wldev *dev)
2354 {
2355 struct b43_phy *phy = &dev->phy;
2356 int err, tmp;
2357 u32 value32, macctl;
2358 u16 value16;
2359
2360 /* Initialize the MAC control */
2361 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2362 if (dev->phy.gmode)
2363 macctl |= B43_MACCTL_GMODE;
2364 macctl |= B43_MACCTL_INFRA;
2365 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2366
2367 err = b43_request_firmware(dev);
2368 if (err)
2369 goto out;
2370 err = b43_upload_microcode(dev);
2371 if (err)
2372 goto out; /* firmware is released later */
2373
2374 err = b43_gpio_init(dev);
2375 if (err)
2376 goto out; /* firmware is released later */
2377
2378 err = b43_upload_initvals(dev);
2379 if (err)
2380 goto err_gpio_clean;
2381 b43_radio_turn_on(dev);
2382
2383 b43_write16(dev, 0x03E6, 0x0000);
2384 err = b43_phy_init(dev);
2385 if (err)
2386 goto err_radio_off;
2387
2388 /* Select initial Interference Mitigation. */
2389 tmp = phy->interfmode;
2390 phy->interfmode = B43_INTERFMODE_NONE;
2391 b43_radio_set_interference_mitigation(dev, tmp);
2392
2393 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2394 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2395
2396 if (phy->type == B43_PHYTYPE_B) {
2397 value16 = b43_read16(dev, 0x005E);
2398 value16 |= 0x0004;
2399 b43_write16(dev, 0x005E, value16);
2400 }
2401 b43_write32(dev, 0x0100, 0x01000000);
2402 if (dev->dev->id.revision < 5)
2403 b43_write32(dev, 0x010C, 0x01000000);
2404
2405 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2406 & ~B43_MACCTL_INFRA);
2407 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2408 | B43_MACCTL_INFRA);
2409
2410 /* Probe Response Timeout value */
2411 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2412 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2413
2414 /* Initially set the wireless operation mode. */
2415 b43_adjust_opmode(dev);
2416
2417 if (dev->dev->id.revision < 3) {
2418 b43_write16(dev, 0x060E, 0x0000);
2419 b43_write16(dev, 0x0610, 0x8000);
2420 b43_write16(dev, 0x0604, 0x0000);
2421 b43_write16(dev, 0x0606, 0x0200);
2422 } else {
2423 b43_write32(dev, 0x0188, 0x80000000);
2424 b43_write32(dev, 0x018C, 0x02000000);
2425 }
2426 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2427 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2428 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2429 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2430 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2431 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2432 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2433
2434 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2435 value32 |= 0x00100000;
2436 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2437
2438 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2439 dev->dev->bus->chipco.fast_pwrup_delay);
2440
2441 err = 0;
2442 b43dbg(dev->wl, "Chip initialized\n");
2443 out:
2444 return err;
2445
2446 err_radio_off:
2447 b43_radio_turn_off(dev, 1);
2448 err_gpio_clean:
2449 b43_gpio_cleanup(dev);
2450 return err;
2451 }
2452
2453 static void b43_periodic_every120sec(struct b43_wldev *dev)
2454 {
2455 struct b43_phy *phy = &dev->phy;
2456
2457 if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2458 return;
2459
2460 b43_mac_suspend(dev);
2461 b43_lo_g_measure(dev);
2462 b43_mac_enable(dev);
2463 if (b43_has_hardware_pctl(phy))
2464 b43_lo_g_ctl_mark_all_unused(dev);
2465 }
2466
2467 static void b43_periodic_every60sec(struct b43_wldev *dev)
2468 {
2469 struct b43_phy *phy = &dev->phy;
2470
2471 if (phy->type != B43_PHYTYPE_G)
2472 return;
2473 if (!b43_has_hardware_pctl(phy))
2474 b43_lo_g_ctl_mark_all_unused(dev);
2475 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2476 b43_mac_suspend(dev);
2477 b43_calc_nrssi_slope(dev);
2478 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2479 u8 old_chan = phy->channel;
2480
2481 /* VCO Calibration */
2482 if (old_chan >= 8)
2483 b43_radio_selectchannel(dev, 1, 0);
2484 else
2485 b43_radio_selectchannel(dev, 13, 0);
2486 b43_radio_selectchannel(dev, old_chan, 0);
2487 }
2488 b43_mac_enable(dev);
2489 }
2490 }
2491
2492 static void b43_periodic_every30sec(struct b43_wldev *dev)
2493 {
2494 /* Update device statistics. */
2495 b43_calculate_link_quality(dev);
2496 }
2497
2498 static void b43_periodic_every15sec(struct b43_wldev *dev)
2499 {
2500 struct b43_phy *phy = &dev->phy;
2501
2502 if (phy->type == B43_PHYTYPE_G) {
2503 //TODO: update_aci_moving_average
2504 if (phy->aci_enable && phy->aci_wlan_automatic) {
2505 b43_mac_suspend(dev);
2506 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2507 if (0 /*TODO: bunch of conditions */ ) {
2508 b43_radio_set_interference_mitigation
2509 (dev, B43_INTERFMODE_MANUALWLAN);
2510 }
2511 } else if (1 /*TODO*/) {
2512 /*
2513 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2514 b43_radio_set_interference_mitigation(dev,
2515 B43_INTERFMODE_NONE);
2516 }
2517 */
2518 }
2519 b43_mac_enable(dev);
2520 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2521 phy->rev == 1) {
2522 //TODO: implement rev1 workaround
2523 }
2524 }
2525 b43_phy_xmitpower(dev); //FIXME: unless scanning?
2526 //TODO for APHY (temperature?)
2527
2528 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2529 wmb();
2530 }
2531
2532 static void do_periodic_work(struct b43_wldev *dev)
2533 {
2534 unsigned int state;
2535
2536 state = dev->periodic_state;
2537 if (state % 8 == 0)
2538 b43_periodic_every120sec(dev);
2539 if (state % 4 == 0)
2540 b43_periodic_every60sec(dev);
2541 if (state % 2 == 0)
2542 b43_periodic_every30sec(dev);
2543 b43_periodic_every15sec(dev);
2544 }
2545
2546 /* Periodic work locking policy:
2547 * The whole periodic work handler is protected by
2548 * wl->mutex. If another lock is needed somewhere in the
2549 * pwork callchain, it's aquired in-place, where it's needed.
2550 */
2551 static void b43_periodic_work_handler(struct work_struct *work)
2552 {
2553 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2554 periodic_work.work);
2555 struct b43_wl *wl = dev->wl;
2556 unsigned long delay;
2557
2558 mutex_lock(&wl->mutex);
2559
2560 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2561 goto out;
2562 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2563 goto out_requeue;
2564
2565 do_periodic_work(dev);
2566
2567 dev->periodic_state++;
2568 out_requeue:
2569 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2570 delay = msecs_to_jiffies(50);
2571 else
2572 delay = round_jiffies_relative(HZ * 15);
2573 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2574 out:
2575 mutex_unlock(&wl->mutex);
2576 }
2577
2578 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2579 {
2580 struct delayed_work *work = &dev->periodic_work;
2581
2582 dev->periodic_state = 0;
2583 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2584 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2585 }
2586
2587 /* Check if communication with the device works correctly. */
2588 static int b43_validate_chipaccess(struct b43_wldev *dev)
2589 {
2590 u32 v, backup;
2591
2592 backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2593
2594 /* Check for read/write and endianness problems. */
2595 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2596 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2597 goto error;
2598 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2599 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2600 goto error;
2601
2602 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2603
2604 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2605 /* The 32bit register shadows the two 16bit registers
2606 * with update sideeffects. Validate this. */
2607 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2608 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2609 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2610 goto error;
2611 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2612 goto error;
2613 }
2614 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2615
2616 v = b43_read32(dev, B43_MMIO_MACCTL);
2617 v |= B43_MACCTL_GMODE;
2618 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2619 goto error;
2620
2621 return 0;
2622 error:
2623 b43err(dev->wl, "Failed to validate the chipaccess\n");
2624 return -ENODEV;
2625 }
2626
2627 static void b43_security_init(struct b43_wldev *dev)
2628 {
2629 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2630 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2631 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2632 /* KTP is a word address, but we address SHM bytewise.
2633 * So multiply by two.
2634 */
2635 dev->ktp *= 2;
2636 if (dev->dev->id.revision >= 5) {
2637 /* Number of RCMTA address slots */
2638 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2639 }
2640 b43_clear_keys(dev);
2641 }
2642
2643 static int b43_rng_read(struct hwrng *rng, u32 * data)
2644 {
2645 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2646 unsigned long flags;
2647
2648 /* Don't take wl->mutex here, as it could deadlock with
2649 * hwrng internal locking. It's not needed to take
2650 * wl->mutex here, anyway. */
2651
2652 spin_lock_irqsave(&wl->irq_lock, flags);
2653 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2654 spin_unlock_irqrestore(&wl->irq_lock, flags);
2655
2656 return (sizeof(u16));
2657 }
2658
2659 static void b43_rng_exit(struct b43_wl *wl, bool suspended)
2660 {
2661 if (wl->rng_initialized)
2662 __hwrng_unregister(&wl->rng, suspended);
2663 }
2664
2665 static int b43_rng_init(struct b43_wl *wl)
2666 {
2667 int err;
2668
2669 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2670 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2671 wl->rng.name = wl->rng_name;
2672 wl->rng.data_read = b43_rng_read;
2673 wl->rng.priv = (unsigned long)wl;
2674 wl->rng_initialized = 1;
2675 err = hwrng_register(&wl->rng);
2676 if (err) {
2677 wl->rng_initialized = 0;
2678 b43err(wl, "Failed to register the random "
2679 "number generator (%d)\n", err);
2680 }
2681
2682 return err;
2683 }
2684
2685 static int b43_op_tx(struct ieee80211_hw *hw,
2686 struct sk_buff *skb,
2687 struct ieee80211_tx_control *ctl)
2688 {
2689 struct b43_wl *wl = hw_to_b43_wl(hw);
2690 struct b43_wldev *dev = wl->current_dev;
2691 int err = -ENODEV;
2692
2693 if (unlikely(!dev))
2694 goto out;
2695 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2696 goto out;
2697 /* DMA-TX is done without a global lock. */
2698 err = b43_dma_tx(dev, skb, ctl);
2699 out:
2700 if (unlikely(err))
2701 return NETDEV_TX_BUSY;
2702 return NETDEV_TX_OK;
2703 }
2704
2705 static int b43_op_conf_tx(struct ieee80211_hw *hw,
2706 int queue,
2707 const struct ieee80211_tx_queue_params *params)
2708 {
2709 return 0;
2710 }
2711
2712 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
2713 struct ieee80211_tx_queue_stats *stats)
2714 {
2715 struct b43_wl *wl = hw_to_b43_wl(hw);
2716 struct b43_wldev *dev = wl->current_dev;
2717 unsigned long flags;
2718 int err = -ENODEV;
2719
2720 if (!dev)
2721 goto out;
2722 spin_lock_irqsave(&wl->irq_lock, flags);
2723 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2724 b43_dma_get_tx_stats(dev, stats);
2725 err = 0;
2726 }
2727 spin_unlock_irqrestore(&wl->irq_lock, flags);
2728 out:
2729 return err;
2730 }
2731
2732 static int b43_op_get_stats(struct ieee80211_hw *hw,
2733 struct ieee80211_low_level_stats *stats)
2734 {
2735 struct b43_wl *wl = hw_to_b43_wl(hw);
2736 unsigned long flags;
2737
2738 spin_lock_irqsave(&wl->irq_lock, flags);
2739 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2740 spin_unlock_irqrestore(&wl->irq_lock, flags);
2741
2742 return 0;
2743 }
2744
2745 static void b43_put_phy_into_reset(struct b43_wldev *dev)
2746 {
2747 struct ssb_device *sdev = dev->dev;
2748 u32 tmslow;
2749
2750 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2751 tmslow &= ~B43_TMSLOW_GMODE;
2752 tmslow |= B43_TMSLOW_PHYRESET;
2753 tmslow |= SSB_TMSLOW_FGC;
2754 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2755 msleep(1);
2756
2757 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2758 tmslow &= ~SSB_TMSLOW_FGC;
2759 tmslow |= B43_TMSLOW_PHYRESET;
2760 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2761 msleep(1);
2762 }
2763
2764 static const char * band_to_string(enum ieee80211_band band)
2765 {
2766 switch (band) {
2767 case IEEE80211_BAND_5GHZ:
2768 return "5";
2769 case IEEE80211_BAND_2GHZ:
2770 return "2.4";
2771 default:
2772 break;
2773 }
2774 B43_WARN_ON(1);
2775 return "";
2776 }
2777
2778 /* Expects wl->mutex locked */
2779 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
2780 {
2781 struct b43_wldev *up_dev = NULL;
2782 struct b43_wldev *down_dev;
2783 struct b43_wldev *d;
2784 int err;
2785 bool gmode;
2786 int prev_status;
2787
2788 /* Find a device and PHY which supports the band. */
2789 list_for_each_entry(d, &wl->devlist, list) {
2790 switch (chan->band) {
2791 case IEEE80211_BAND_5GHZ:
2792 if (d->phy.supports_5ghz) {
2793 up_dev = d;
2794 gmode = 0;
2795 }
2796 break;
2797 case IEEE80211_BAND_2GHZ:
2798 if (d->phy.supports_2ghz) {
2799 up_dev = d;
2800 gmode = 1;
2801 }
2802 break;
2803 default:
2804 B43_WARN_ON(1);
2805 return -EINVAL;
2806 }
2807 if (up_dev)
2808 break;
2809 }
2810 if (!up_dev) {
2811 b43err(wl, "Could not find a device for %s-GHz band operation\n",
2812 band_to_string(chan->band));
2813 return -ENODEV;
2814 }
2815 if ((up_dev == wl->current_dev) &&
2816 (!!wl->current_dev->phy.gmode == !!gmode)) {
2817 /* This device is already running. */
2818 return 0;
2819 }
2820 b43dbg(wl, "Switching to %s-GHz band\n",
2821 band_to_string(chan->band));
2822 down_dev = wl->current_dev;
2823
2824 prev_status = b43_status(down_dev);
2825 /* Shutdown the currently running core. */
2826 if (prev_status >= B43_STAT_STARTED)
2827 b43_wireless_core_stop(down_dev);
2828 if (prev_status >= B43_STAT_INITIALIZED)
2829 b43_wireless_core_exit(down_dev);
2830
2831 if (down_dev != up_dev) {
2832 /* We switch to a different core, so we put PHY into
2833 * RESET on the old core. */
2834 b43_put_phy_into_reset(down_dev);
2835 }
2836
2837 /* Now start the new core. */
2838 up_dev->phy.gmode = gmode;
2839 if (prev_status >= B43_STAT_INITIALIZED) {
2840 err = b43_wireless_core_init(up_dev);
2841 if (err) {
2842 b43err(wl, "Fatal: Could not initialize device for "
2843 "selected %s-GHz band\n",
2844 band_to_string(chan->band));
2845 goto init_failure;
2846 }
2847 }
2848 if (prev_status >= B43_STAT_STARTED) {
2849 err = b43_wireless_core_start(up_dev);
2850 if (err) {
2851 b43err(wl, "Fatal: Coult not start device for "
2852 "selected %s-GHz band\n",
2853 band_to_string(chan->band));
2854 b43_wireless_core_exit(up_dev);
2855 goto init_failure;
2856 }
2857 }
2858 B43_WARN_ON(b43_status(up_dev) != prev_status);
2859
2860 wl->current_dev = up_dev;
2861
2862 return 0;
2863 init_failure:
2864 /* Whoops, failed to init the new core. No core is operating now. */
2865 wl->current_dev = NULL;
2866 return err;
2867 }
2868
2869 /* Check if the use of the antenna that ieee80211 told us to
2870 * use is possible. This will fall back to DEFAULT.
2871 * "antenna_nr" is the antenna identifier we got from ieee80211. */
2872 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
2873 u8 antenna_nr)
2874 {
2875 u8 antenna_mask;
2876
2877 if (antenna_nr == 0) {
2878 /* Zero means "use default antenna". That's always OK. */
2879 return 0;
2880 }
2881
2882 /* Get the mask of available antennas. */
2883 if (dev->phy.gmode)
2884 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
2885 else
2886 antenna_mask = dev->dev->bus->sprom.ant_available_a;
2887
2888 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
2889 /* This antenna is not available. Fall back to default. */
2890 return 0;
2891 }
2892
2893 return antenna_nr;
2894 }
2895
2896 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
2897 {
2898 antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
2899 switch (antenna) {
2900 case 0: /* default/diversity */
2901 return B43_ANTENNA_DEFAULT;
2902 case 1: /* Antenna 0 */
2903 return B43_ANTENNA0;
2904 case 2: /* Antenna 1 */
2905 return B43_ANTENNA1;
2906 case 3: /* Antenna 2 */
2907 return B43_ANTENNA2;
2908 case 4: /* Antenna 3 */
2909 return B43_ANTENNA3;
2910 default:
2911 return B43_ANTENNA_DEFAULT;
2912 }
2913 }
2914
2915 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2916 {
2917 struct b43_wl *wl = hw_to_b43_wl(hw);
2918 struct b43_wldev *dev;
2919 struct b43_phy *phy;
2920 unsigned long flags;
2921 int antenna;
2922 int err = 0;
2923 u32 savedirqs;
2924
2925 mutex_lock(&wl->mutex);
2926
2927 /* Switch the band (if necessary). This might change the active core. */
2928 err = b43_switch_band(wl, conf->channel);
2929 if (err)
2930 goto out_unlock_mutex;
2931 dev = wl->current_dev;
2932 phy = &dev->phy;
2933
2934 /* Disable IRQs while reconfiguring the device.
2935 * This makes it possible to drop the spinlock throughout
2936 * the reconfiguration process. */
2937 spin_lock_irqsave(&wl->irq_lock, flags);
2938 if (b43_status(dev) < B43_STAT_STARTED) {
2939 spin_unlock_irqrestore(&wl->irq_lock, flags);
2940 goto out_unlock_mutex;
2941 }
2942 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
2943 spin_unlock_irqrestore(&wl->irq_lock, flags);
2944 b43_synchronize_irq(dev);
2945
2946 /* Switch to the requested channel.
2947 * The firmware takes care of races with the TX handler. */
2948 if (conf->channel->hw_value != phy->channel)
2949 b43_radio_selectchannel(dev, conf->channel->hw_value, 0);
2950
2951 /* Enable/Disable ShortSlot timing. */
2952 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
2953 dev->short_slot) {
2954 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
2955 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
2956 b43_short_slot_timing_enable(dev);
2957 else
2958 b43_short_slot_timing_disable(dev);
2959 }
2960
2961 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2962
2963 /* Adjust the desired TX power level. */
2964 if (conf->power_level != 0) {
2965 if (conf->power_level != phy->power_level) {
2966 phy->power_level = conf->power_level;
2967 b43_phy_xmitpower(dev);
2968 }
2969 }
2970
2971 /* Antennas for RX and management frame TX. */
2972 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
2973 b43_mgmtframe_txantenna(dev, antenna);
2974 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
2975 b43_set_rx_antenna(dev, antenna);
2976
2977 /* Update templates for AP mode. */
2978 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2979 b43_set_beacon_int(dev, conf->beacon_int);
2980
2981 if (!!conf->radio_enabled != phy->radio_on) {
2982 if (conf->radio_enabled) {
2983 b43_radio_turn_on(dev);
2984 b43info(dev->wl, "Radio turned on by software\n");
2985 if (!dev->radio_hw_enable) {
2986 b43info(dev->wl, "The hardware RF-kill button "
2987 "still turns the radio physically off. "
2988 "Press the button to turn it on.\n");
2989 }
2990 } else {
2991 b43_radio_turn_off(dev, 0);
2992 b43info(dev->wl, "Radio turned off by software\n");
2993 }
2994 }
2995
2996 spin_lock_irqsave(&wl->irq_lock, flags);
2997 b43_interrupt_enable(dev, savedirqs);
2998 mmiowb();
2999 spin_unlock_irqrestore(&wl->irq_lock, flags);
3000 out_unlock_mutex:
3001 mutex_unlock(&wl->mutex);
3002
3003 return err;
3004 }
3005
3006 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3007 const u8 *local_addr, const u8 *addr,
3008 struct ieee80211_key_conf *key)
3009 {
3010 struct b43_wl *wl = hw_to_b43_wl(hw);
3011 struct b43_wldev *dev;
3012 unsigned long flags;
3013 u8 algorithm;
3014 u8 index;
3015 int err;
3016 DECLARE_MAC_BUF(mac);
3017
3018 if (modparam_nohwcrypt)
3019 return -ENOSPC; /* User disabled HW-crypto */
3020
3021 mutex_lock(&wl->mutex);
3022 spin_lock_irqsave(&wl->irq_lock, flags);
3023
3024 dev = wl->current_dev;
3025 err = -ENODEV;
3026 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3027 goto out_unlock;
3028
3029 err = -EINVAL;
3030 switch (key->alg) {
3031 case ALG_WEP:
3032 if (key->keylen == 5)
3033 algorithm = B43_SEC_ALGO_WEP40;
3034 else
3035 algorithm = B43_SEC_ALGO_WEP104;
3036 break;
3037 case ALG_TKIP:
3038 algorithm = B43_SEC_ALGO_TKIP;
3039 break;
3040 case ALG_CCMP:
3041 algorithm = B43_SEC_ALGO_AES;
3042 break;
3043 default:
3044 B43_WARN_ON(1);
3045 goto out_unlock;
3046 }
3047 index = (u8) (key->keyidx);
3048 if (index > 3)
3049 goto out_unlock;
3050
3051 switch (cmd) {
3052 case SET_KEY:
3053 if (algorithm == B43_SEC_ALGO_TKIP) {
3054 /* FIXME: No TKIP hardware encryption for now. */
3055 err = -EOPNOTSUPP;
3056 goto out_unlock;
3057 }
3058
3059 if (is_broadcast_ether_addr(addr)) {
3060 /* addr is FF:FF:FF:FF:FF:FF for default keys */
3061 err = b43_key_write(dev, index, algorithm,
3062 key->key, key->keylen, NULL, key);
3063 } else {
3064 /*
3065 * either pairwise key or address is 00:00:00:00:00:00
3066 * for transmit-only keys
3067 */
3068 err = b43_key_write(dev, -1, algorithm,
3069 key->key, key->keylen, addr, key);
3070 }
3071 if (err)
3072 goto out_unlock;
3073
3074 if (algorithm == B43_SEC_ALGO_WEP40 ||
3075 algorithm == B43_SEC_ALGO_WEP104) {
3076 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3077 } else {
3078 b43_hf_write(dev,
3079 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3080 }
3081 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3082 break;
3083 case DISABLE_KEY: {
3084 err = b43_key_clear(dev, key->hw_key_idx);
3085 if (err)
3086 goto out_unlock;
3087 break;
3088 }
3089 default:
3090 B43_WARN_ON(1);
3091 }
3092 out_unlock:
3093 spin_unlock_irqrestore(&wl->irq_lock, flags);
3094 mutex_unlock(&wl->mutex);
3095 if (!err) {
3096 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3097 "mac: %s\n",
3098 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3099 print_mac(mac, addr));
3100 }
3101 return err;
3102 }
3103
3104 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3105 unsigned int changed, unsigned int *fflags,
3106 int mc_count, struct dev_addr_list *mc_list)
3107 {
3108 struct b43_wl *wl = hw_to_b43_wl(hw);
3109 struct b43_wldev *dev = wl->current_dev;
3110 unsigned long flags;
3111
3112 if (!dev) {
3113 *fflags = 0;
3114 return;
3115 }
3116
3117 spin_lock_irqsave(&wl->irq_lock, flags);
3118 *fflags &= FIF_PROMISC_IN_BSS |
3119 FIF_ALLMULTI |
3120 FIF_FCSFAIL |
3121 FIF_PLCPFAIL |
3122 FIF_CONTROL |
3123 FIF_OTHER_BSS |
3124 FIF_BCN_PRBRESP_PROMISC;
3125
3126 changed &= FIF_PROMISC_IN_BSS |
3127 FIF_ALLMULTI |
3128 FIF_FCSFAIL |
3129 FIF_PLCPFAIL |
3130 FIF_CONTROL |
3131 FIF_OTHER_BSS |
3132 FIF_BCN_PRBRESP_PROMISC;
3133
3134 wl->filter_flags = *fflags;
3135
3136 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3137 b43_adjust_opmode(dev);
3138 spin_unlock_irqrestore(&wl->irq_lock, flags);
3139 }
3140
3141 static int b43_op_config_interface(struct ieee80211_hw *hw,
3142 struct ieee80211_vif *vif,
3143 struct ieee80211_if_conf *conf)
3144 {
3145 struct b43_wl *wl = hw_to_b43_wl(hw);
3146 struct b43_wldev *dev = wl->current_dev;
3147 unsigned long flags;
3148
3149 if (!dev)
3150 return -ENODEV;
3151 mutex_lock(&wl->mutex);
3152 spin_lock_irqsave(&wl->irq_lock, flags);
3153 B43_WARN_ON(wl->vif != vif);
3154 if (conf->bssid)
3155 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3156 else
3157 memset(wl->bssid, 0, ETH_ALEN);
3158 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3159 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
3160 B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
3161 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3162 if (conf->beacon)
3163 b43_update_templates(wl, conf->beacon);
3164 }
3165 b43_write_mac_bssid_templates(dev);
3166 }
3167 spin_unlock_irqrestore(&wl->irq_lock, flags);
3168 mutex_unlock(&wl->mutex);
3169
3170 return 0;
3171 }
3172
3173 /* Locking: wl->mutex */
3174 static void b43_wireless_core_stop(struct b43_wldev *dev)
3175 {
3176 struct b43_wl *wl = dev->wl;
3177 unsigned long flags;
3178
3179 if (b43_status(dev) < B43_STAT_STARTED)
3180 return;
3181
3182 /* Disable and sync interrupts. We must do this before than
3183 * setting the status to INITIALIZED, as the interrupt handler
3184 * won't care about IRQs then. */
3185 spin_lock_irqsave(&wl->irq_lock, flags);
3186 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3187 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3188 spin_unlock_irqrestore(&wl->irq_lock, flags);
3189 b43_synchronize_irq(dev);
3190
3191 b43_set_status(dev, B43_STAT_INITIALIZED);
3192
3193 mutex_unlock(&wl->mutex);
3194 /* Must unlock as it would otherwise deadlock. No races here.
3195 * Cancel the possibly running self-rearming periodic work. */
3196 cancel_delayed_work_sync(&dev->periodic_work);
3197 mutex_lock(&wl->mutex);
3198
3199 ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
3200
3201 b43_mac_suspend(dev);
3202 free_irq(dev->dev->irq, dev);
3203 b43dbg(wl, "Wireless interface stopped\n");
3204 }
3205
3206 /* Locking: wl->mutex */
3207 static int b43_wireless_core_start(struct b43_wldev *dev)
3208 {
3209 int err;
3210
3211 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3212
3213 drain_txstatus_queue(dev);
3214 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3215 IRQF_SHARED, KBUILD_MODNAME, dev);
3216 if (err) {
3217 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3218 goto out;
3219 }
3220
3221 /* We are ready to run. */
3222 b43_set_status(dev, B43_STAT_STARTED);
3223
3224 /* Start data flow (TX/RX). */
3225 b43_mac_enable(dev);
3226 b43_interrupt_enable(dev, dev->irq_savedstate);
3227 ieee80211_start_queues(dev->wl->hw);
3228
3229 /* Start maintainance work */
3230 b43_periodic_tasks_setup(dev);
3231
3232 b43dbg(dev->wl, "Wireless interface started\n");
3233 out:
3234 return err;
3235 }
3236
3237 /* Get PHY and RADIO versioning numbers */
3238 static int b43_phy_versioning(struct b43_wldev *dev)
3239 {
3240 struct b43_phy *phy = &dev->phy;
3241 u32 tmp;
3242 u8 analog_type;
3243 u8 phy_type;
3244 u8 phy_rev;
3245 u16 radio_manuf;
3246 u16 radio_ver;
3247 u16 radio_rev;
3248 int unsupported = 0;
3249
3250 /* Get PHY versioning */
3251 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3252 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3253 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3254 phy_rev = (tmp & B43_PHYVER_VERSION);
3255 switch (phy_type) {
3256 case B43_PHYTYPE_A:
3257 if (phy_rev >= 4)
3258 unsupported = 1;
3259 break;
3260 case B43_PHYTYPE_B:
3261 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3262 && phy_rev != 7)
3263 unsupported = 1;
3264 break;
3265 case B43_PHYTYPE_G:
3266 if (phy_rev > 9)
3267 unsupported = 1;
3268 break;
3269 #ifdef CONFIG_B43_NPHY
3270 case B43_PHYTYPE_N:
3271 if (phy_rev > 1)
3272 unsupported = 1;
3273 break;
3274 #endif
3275 default:
3276 unsupported = 1;
3277 };
3278 if (unsupported) {
3279 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3280 "(Analog %u, Type %u, Revision %u)\n",
3281 analog_type, phy_type, phy_rev);
3282 return -EOPNOTSUPP;
3283 }
3284 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3285 analog_type, phy_type, phy_rev);
3286
3287 /* Get RADIO versioning */
3288 if (dev->dev->bus->chip_id == 0x4317) {
3289 if (dev->dev->bus->chip_rev == 0)
3290 tmp = 0x3205017F;
3291 else if (dev->dev->bus->chip_rev == 1)
3292 tmp = 0x4205017F;
3293 else
3294 tmp = 0x5205017F;
3295 } else {
3296 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3297 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3298 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3299 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3300 }
3301 radio_manuf = (tmp & 0x00000FFF);
3302 radio_ver = (tmp & 0x0FFFF000) >> 12;
3303 radio_rev = (tmp & 0xF0000000) >> 28;
3304 if (radio_manuf != 0x17F /* Broadcom */)
3305 unsupported = 1;
3306 switch (phy_type) {
3307 case B43_PHYTYPE_A:
3308 if (radio_ver != 0x2060)
3309 unsupported = 1;
3310 if (radio_rev != 1)
3311 unsupported = 1;
3312 if (radio_manuf != 0x17F)
3313 unsupported = 1;
3314 break;
3315 case B43_PHYTYPE_B:
3316 if ((radio_ver & 0xFFF0) != 0x2050)
3317 unsupported = 1;
3318 break;
3319 case B43_PHYTYPE_G:
3320 if (radio_ver != 0x2050)
3321 unsupported = 1;
3322 break;
3323 case B43_PHYTYPE_N:
3324 if (radio_ver != 0x2055)
3325 unsupported = 1;
3326 break;
3327 default:
3328 B43_WARN_ON(1);
3329 }
3330 if (unsupported) {
3331 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3332 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3333 radio_manuf, radio_ver, radio_rev);
3334 return -EOPNOTSUPP;
3335 }
3336 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3337 radio_manuf, radio_ver, radio_rev);
3338
3339 phy->radio_manuf = radio_manuf;
3340 phy->radio_ver = radio_ver;
3341 phy->radio_rev = radio_rev;
3342
3343 phy->analog = analog_type;
3344 phy->type = phy_type;
3345 phy->rev = phy_rev;
3346
3347 return 0;
3348 }
3349
3350 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3351 struct b43_phy *phy)
3352 {
3353 struct b43_txpower_lo_control *lo;
3354 int i;
3355
3356 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3357 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3358
3359 phy->aci_enable = 0;
3360 phy->aci_wlan_automatic = 0;
3361 phy->aci_hw_rssi = 0;
3362
3363 phy->radio_off_context.valid = 0;
3364
3365 lo = phy->lo_control;
3366 if (lo) {
3367 memset(lo, 0, sizeof(*(phy->lo_control)));
3368 lo->rebuild = 1;
3369 lo->tx_bias = 0xFF;
3370 }
3371 phy->max_lb_gain = 0;
3372 phy->trsw_rx_gain = 0;
3373 phy->txpwr_offset = 0;
3374
3375 /* NRSSI */
3376 phy->nrssislope = 0;
3377 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3378 phy->nrssi[i] = -1000;
3379 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3380 phy->nrssi_lt[i] = i;
3381
3382 phy->lofcal = 0xFFFF;
3383 phy->initval = 0xFFFF;
3384
3385 phy->interfmode = B43_INTERFMODE_NONE;
3386 phy->channel = 0xFF;
3387
3388 phy->hardware_power_control = !!modparam_hwpctl;
3389
3390 /* PHY TX errors counter. */
3391 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3392
3393 /* OFDM-table address caching. */
3394 phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3395 }
3396
3397 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3398 {
3399 dev->dfq_valid = 0;
3400
3401 /* Assume the radio is enabled. If it's not enabled, the state will
3402 * immediately get fixed on the first periodic work run. */
3403 dev->radio_hw_enable = 1;
3404
3405 /* Stats */
3406 memset(&dev->stats, 0, sizeof(dev->stats));
3407
3408 setup_struct_phy_for_init(dev, &dev->phy);
3409
3410 /* IRQ related flags */
3411 dev->irq_reason = 0;
3412 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3413 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3414
3415 dev->mac_suspended = 1;
3416
3417 /* Noise calculation context */
3418 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3419 }
3420
3421 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3422 {
3423 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3424 u32 hf;
3425
3426 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3427 return;
3428 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3429 return;
3430
3431 hf = b43_hf_read(dev);
3432 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3433 hf |= B43_HF_BTCOEXALT;
3434 else
3435 hf |= B43_HF_BTCOEX;
3436 b43_hf_write(dev, hf);
3437 //TODO
3438 }
3439
3440 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3441 { //TODO
3442 }
3443
3444 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3445 {
3446 #ifdef CONFIG_SSB_DRIVER_PCICORE
3447 struct ssb_bus *bus = dev->dev->bus;
3448 u32 tmp;
3449
3450 if (bus->pcicore.dev &&
3451 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3452 bus->pcicore.dev->id.revision <= 5) {
3453 /* IMCFGLO timeouts workaround. */
3454 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3455 tmp &= ~SSB_IMCFGLO_REQTO;
3456 tmp &= ~SSB_IMCFGLO_SERTO;
3457 switch (bus->bustype) {
3458 case SSB_BUSTYPE_PCI:
3459 case SSB_BUSTYPE_PCMCIA:
3460 tmp |= 0x32;
3461 break;
3462 case SSB_BUSTYPE_SSB:
3463 tmp |= 0x53;
3464 break;
3465 }
3466 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3467 }
3468 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3469 }
3470
3471 /* Write the short and long frame retry limit values. */
3472 static void b43_set_retry_limits(struct b43_wldev *dev,
3473 unsigned int short_retry,
3474 unsigned int long_retry)
3475 {
3476 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3477 * the chip-internal counter. */
3478 short_retry = min(short_retry, (unsigned int)0xF);
3479 long_retry = min(long_retry, (unsigned int)0xF);
3480
3481 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3482 short_retry);
3483 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3484 long_retry);
3485 }
3486
3487 /* Shutdown a wireless core */
3488 /* Locking: wl->mutex */
3489 static void b43_wireless_core_exit(struct b43_wldev *dev)
3490 {
3491 struct b43_phy *phy = &dev->phy;
3492 u32 macctl;
3493
3494 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3495 if (b43_status(dev) != B43_STAT_INITIALIZED)
3496 return;
3497 b43_set_status(dev, B43_STAT_UNINIT);
3498
3499 /* Stop the microcode PSM. */
3500 macctl = b43_read32(dev, B43_MMIO_MACCTL);
3501 macctl &= ~B43_MACCTL_PSM_RUN;
3502 macctl |= B43_MACCTL_PSM_JMP0;
3503 b43_write32(dev, B43_MMIO_MACCTL, macctl);
3504
3505 if (!dev->suspend_in_progress) {
3506 b43_leds_exit(dev);
3507 b43_rng_exit(dev->wl, false);
3508 }
3509 b43_dma_free(dev);
3510 b43_chip_exit(dev);
3511 b43_radio_turn_off(dev, 1);
3512 b43_switch_analog(dev, 0);
3513 if (phy->dyn_tssi_tbl)
3514 kfree(phy->tssi2dbm);
3515 kfree(phy->lo_control);
3516 phy->lo_control = NULL;
3517 if (dev->wl->current_beacon) {
3518 dev_kfree_skb_any(dev->wl->current_beacon);
3519 dev->wl->current_beacon = NULL;
3520 }
3521
3522 ssb_device_disable(dev->dev, 0);
3523 ssb_bus_may_powerdown(dev->dev->bus);
3524 }
3525
3526 /* Initialize a wireless core */
3527 static int b43_wireless_core_init(struct b43_wldev *dev)
3528 {
3529 struct b43_wl *wl = dev->wl;
3530 struct ssb_bus *bus = dev->dev->bus;
3531 struct ssb_sprom *sprom = &bus->sprom;
3532 struct b43_phy *phy = &dev->phy;
3533 int err;
3534 u32 hf, tmp;
3535
3536 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3537
3538 err = ssb_bus_powerup(bus, 0);
3539 if (err)
3540 goto out;
3541 if (!ssb_device_is_enabled(dev->dev)) {
3542 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3543 b43_wireless_core_reset(dev, tmp);
3544 }
3545
3546 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3547 phy->lo_control =
3548 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3549 if (!phy->lo_control) {
3550 err = -ENOMEM;
3551 goto err_busdown;
3552 }
3553 }
3554 setup_struct_wldev_for_init(dev);
3555
3556 err = b43_phy_init_tssi2dbm_table(dev);
3557 if (err)
3558 goto err_kfree_lo_control;
3559
3560 /* Enable IRQ routing to this device. */
3561 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3562
3563 b43_imcfglo_timeouts_workaround(dev);
3564 b43_bluetooth_coext_disable(dev);
3565 b43_phy_early_init(dev);
3566 err = b43_chip_init(dev);
3567 if (err)
3568 goto err_kfree_tssitbl;
3569 b43_shm_write16(dev, B43_SHM_SHARED,
3570 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3571 hf = b43_hf_read(dev);
3572 if (phy->type == B43_PHYTYPE_G) {
3573 hf |= B43_HF_SYMW;
3574 if (phy->rev == 1)
3575 hf |= B43_HF_GDCW;
3576 if (sprom->boardflags_lo & B43_BFL_PACTRL)
3577 hf |= B43_HF_OFDMPABOOST;
3578 } else if (phy->type == B43_PHYTYPE_B) {
3579 hf |= B43_HF_SYMW;
3580 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3581 hf &= ~B43_HF_GDCW;
3582 }
3583 b43_hf_write(dev, hf);
3584
3585 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
3586 B43_DEFAULT_LONG_RETRY_LIMIT);
3587 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3588 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3589
3590 /* Disable sending probe responses from firmware.
3591 * Setting the MaxTime to one usec will always trigger
3592 * a timeout, so we never send any probe resp.
3593 * A timeout of zero is infinite. */
3594 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3595
3596 b43_rate_memory_init(dev);
3597
3598 /* Minimum Contention Window */
3599 if (phy->type == B43_PHYTYPE_B) {
3600 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3601 } else {
3602 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3603 }
3604 /* Maximum Contention Window */
3605 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3606
3607 err = b43_dma_init(dev);
3608 if (err)
3609 goto err_chip_exit;
3610 b43_qos_init(dev);
3611
3612 //FIXME
3613 #if 1
3614 b43_write16(dev, 0x0612, 0x0050);
3615 b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
3616 b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
3617 #endif
3618
3619 b43_bluetooth_coext_enable(dev);
3620
3621 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3622 b43_upload_card_macaddress(dev);
3623 b43_security_init(dev);
3624 if (!dev->suspend_in_progress)
3625 b43_rng_init(wl);
3626
3627 b43_set_status(dev, B43_STAT_INITIALIZED);
3628
3629 if (!dev->suspend_in_progress)
3630 b43_leds_init(dev);
3631 out:
3632 return err;
3633
3634 err_chip_exit:
3635 b43_chip_exit(dev);
3636 err_kfree_tssitbl:
3637 if (phy->dyn_tssi_tbl)
3638 kfree(phy->tssi2dbm);
3639 err_kfree_lo_control:
3640 kfree(phy->lo_control);
3641 phy->lo_control = NULL;
3642 err_busdown:
3643 ssb_bus_may_powerdown(bus);
3644 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3645 return err;
3646 }
3647
3648 static int b43_op_add_interface(struct ieee80211_hw *hw,
3649 struct ieee80211_if_init_conf *conf)
3650 {
3651 struct b43_wl *wl = hw_to_b43_wl(hw);
3652 struct b43_wldev *dev;
3653 unsigned long flags;
3654 int err = -EOPNOTSUPP;
3655
3656 /* TODO: allow WDS/AP devices to coexist */
3657
3658 if (conf->type != IEEE80211_IF_TYPE_AP &&
3659 conf->type != IEEE80211_IF_TYPE_STA &&
3660 conf->type != IEEE80211_IF_TYPE_WDS &&
3661 conf->type != IEEE80211_IF_TYPE_IBSS)
3662 return -EOPNOTSUPP;
3663
3664 mutex_lock(&wl->mutex);
3665 if (wl->operating)
3666 goto out_mutex_unlock;
3667
3668 b43dbg(wl, "Adding Interface type %d\n", conf->type);
3669
3670 dev = wl->current_dev;
3671 wl->operating = 1;
3672 wl->vif = conf->vif;
3673 wl->if_type = conf->type;
3674 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3675
3676 spin_lock_irqsave(&wl->irq_lock, flags);
3677 b43_adjust_opmode(dev);
3678 b43_upload_card_macaddress(dev);
3679 spin_unlock_irqrestore(&wl->irq_lock, flags);
3680
3681 err = 0;
3682 out_mutex_unlock:
3683 mutex_unlock(&wl->mutex);
3684
3685 return err;
3686 }
3687
3688 static void b43_op_remove_interface(struct ieee80211_hw *hw,
3689 struct ieee80211_if_init_conf *conf)
3690 {
3691 struct b43_wl *wl = hw_to_b43_wl(hw);
3692 struct b43_wldev *dev = wl->current_dev;
3693 unsigned long flags;
3694
3695 b43dbg(wl, "Removing Interface type %d\n", conf->type);
3696
3697 mutex_lock(&wl->mutex);
3698
3699 B43_WARN_ON(!wl->operating);
3700 B43_WARN_ON(wl->vif != conf->vif);
3701 wl->vif = NULL;
3702
3703 wl->operating = 0;
3704
3705 spin_lock_irqsave(&wl->irq_lock, flags);
3706 b43_adjust_opmode(dev);
3707 memset(wl->mac_addr, 0, ETH_ALEN);
3708 b43_upload_card_macaddress(dev);
3709 spin_unlock_irqrestore(&wl->irq_lock, flags);
3710
3711 mutex_unlock(&wl->mutex);
3712 }
3713
3714 static int b43_op_start(struct ieee80211_hw *hw)
3715 {
3716 struct b43_wl *wl = hw_to_b43_wl(hw);
3717 struct b43_wldev *dev = wl->current_dev;
3718 int did_init = 0;
3719 int err = 0;
3720 bool do_rfkill_exit = 0;
3721
3722 /* Kill all old instance specific information to make sure
3723 * the card won't use it in the short timeframe between start
3724 * and mac80211 reconfiguring it. */
3725 memset(wl->bssid, 0, ETH_ALEN);
3726 memset(wl->mac_addr, 0, ETH_ALEN);
3727 wl->filter_flags = 0;
3728 wl->radiotap_enabled = 0;
3729
3730 /* First register RFkill.
3731 * LEDs that are registered later depend on it. */
3732 b43_rfkill_init(dev);
3733
3734 mutex_lock(&wl->mutex);
3735
3736 if (b43_status(dev) < B43_STAT_INITIALIZED) {
3737 err = b43_wireless_core_init(dev);
3738 if (err) {
3739 do_rfkill_exit = 1;
3740 goto out_mutex_unlock;
3741 }
3742 did_init = 1;
3743 }
3744
3745 if (b43_status(dev) < B43_STAT_STARTED) {
3746 err = b43_wireless_core_start(dev);
3747 if (err) {
3748 if (did_init)
3749 b43_wireless_core_exit(dev);
3750 do_rfkill_exit = 1;
3751 goto out_mutex_unlock;
3752 }
3753 }
3754
3755 out_mutex_unlock:
3756 mutex_unlock(&wl->mutex);
3757
3758 if (do_rfkill_exit)
3759 b43_rfkill_exit(dev);
3760
3761 return err;
3762 }
3763
3764 static void b43_op_stop(struct ieee80211_hw *hw)
3765 {
3766 struct b43_wl *wl = hw_to_b43_wl(hw);
3767 struct b43_wldev *dev = wl->current_dev;
3768
3769 b43_rfkill_exit(dev);
3770
3771 mutex_lock(&wl->mutex);
3772 if (b43_status(dev) >= B43_STAT_STARTED)
3773 b43_wireless_core_stop(dev);
3774 b43_wireless_core_exit(dev);
3775 mutex_unlock(&wl->mutex);
3776 }
3777
3778 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
3779 u32 short_retry_limit, u32 long_retry_limit)
3780 {
3781 struct b43_wl *wl = hw_to_b43_wl(hw);
3782 struct b43_wldev *dev;
3783 int err = 0;
3784
3785 mutex_lock(&wl->mutex);
3786 dev = wl->current_dev;
3787 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
3788 err = -ENODEV;
3789 goto out_unlock;
3790 }
3791 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
3792 out_unlock:
3793 mutex_unlock(&wl->mutex);
3794
3795 return err;
3796 }
3797
3798 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set)
3799 {
3800 struct b43_wl *wl = hw_to_b43_wl(hw);
3801 struct sk_buff *beacon;
3802 unsigned long flags;
3803
3804 /* We could modify the existing beacon and set the aid bit in
3805 * the TIM field, but that would probably require resizing and
3806 * moving of data within the beacon template.
3807 * Simply request a new beacon and let mac80211 do the hard work. */
3808 beacon = ieee80211_beacon_get(hw, wl->vif, NULL);
3809 if (unlikely(!beacon))
3810 return -ENOMEM;
3811 spin_lock_irqsave(&wl->irq_lock, flags);
3812 b43_update_templates(wl, beacon);
3813 spin_unlock_irqrestore(&wl->irq_lock, flags);
3814
3815 return 0;
3816 }
3817
3818 static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw,
3819 struct sk_buff *beacon,
3820 struct ieee80211_tx_control *ctl)
3821 {
3822 struct b43_wl *wl = hw_to_b43_wl(hw);
3823 unsigned long flags;
3824
3825 spin_lock_irqsave(&wl->irq_lock, flags);
3826 b43_update_templates(wl, beacon);
3827 spin_unlock_irqrestore(&wl->irq_lock, flags);
3828
3829 return 0;
3830 }
3831
3832 static const struct ieee80211_ops b43_hw_ops = {
3833 .tx = b43_op_tx,
3834 .conf_tx = b43_op_conf_tx,
3835 .add_interface = b43_op_add_interface,
3836 .remove_interface = b43_op_remove_interface,
3837 .config = b43_op_config,
3838 .config_interface = b43_op_config_interface,
3839 .configure_filter = b43_op_configure_filter,
3840 .set_key = b43_op_set_key,
3841 .get_stats = b43_op_get_stats,
3842 .get_tx_stats = b43_op_get_tx_stats,
3843 .start = b43_op_start,
3844 .stop = b43_op_stop,
3845 .set_retry_limit = b43_op_set_retry_limit,
3846 .set_tim = b43_op_beacon_set_tim,
3847 .beacon_update = b43_op_ibss_beacon_update,
3848 };
3849
3850 /* Hard-reset the chip. Do not call this directly.
3851 * Use b43_controller_restart()
3852 */
3853 static void b43_chip_reset(struct work_struct *work)
3854 {
3855 struct b43_wldev *dev =
3856 container_of(work, struct b43_wldev, restart_work);
3857 struct b43_wl *wl = dev->wl;
3858 int err = 0;
3859 int prev_status;
3860
3861 mutex_lock(&wl->mutex);
3862
3863 prev_status = b43_status(dev);
3864 /* Bring the device down... */
3865 if (prev_status >= B43_STAT_STARTED)
3866 b43_wireless_core_stop(dev);
3867 if (prev_status >= B43_STAT_INITIALIZED)
3868 b43_wireless_core_exit(dev);
3869
3870 /* ...and up again. */
3871 if (prev_status >= B43_STAT_INITIALIZED) {
3872 err = b43_wireless_core_init(dev);
3873 if (err)
3874 goto out;
3875 }
3876 if (prev_status >= B43_STAT_STARTED) {
3877 err = b43_wireless_core_start(dev);
3878 if (err) {
3879 b43_wireless_core_exit(dev);
3880 goto out;
3881 }
3882 }
3883 out:
3884 mutex_unlock(&wl->mutex);
3885 if (err)
3886 b43err(wl, "Controller restart FAILED\n");
3887 else
3888 b43info(wl, "Controller restarted\n");
3889 }
3890
3891 static int b43_setup_bands(struct b43_wldev *dev,
3892 bool have_2ghz_phy, bool have_5ghz_phy)
3893 {
3894 struct ieee80211_hw *hw = dev->wl->hw;
3895
3896 if (have_2ghz_phy)
3897 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
3898 if (dev->phy.type == B43_PHYTYPE_N) {
3899 if (have_5ghz_phy)
3900 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
3901 } else {
3902 if (have_5ghz_phy)
3903 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
3904 }
3905
3906 dev->phy.supports_2ghz = have_2ghz_phy;
3907 dev->phy.supports_5ghz = have_5ghz_phy;
3908
3909 return 0;
3910 }
3911
3912 static void b43_wireless_core_detach(struct b43_wldev *dev)
3913 {
3914 /* We release firmware that late to not be required to re-request
3915 * is all the time when we reinit the core. */
3916 b43_release_firmware(dev);
3917 }
3918
3919 static int b43_wireless_core_attach(struct b43_wldev *dev)
3920 {
3921 struct b43_wl *wl = dev->wl;
3922 struct ssb_bus *bus = dev->dev->bus;
3923 struct pci_dev *pdev = bus->host_pci;
3924 int err;
3925 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
3926 u32 tmp;
3927
3928 /* Do NOT do any device initialization here.
3929 * Do it in wireless_core_init() instead.
3930 * This function is for gathering basic information about the HW, only.
3931 * Also some structs may be set up here. But most likely you want to have
3932 * that in core_init(), too.
3933 */
3934
3935 err = ssb_bus_powerup(bus, 0);
3936 if (err) {
3937 b43err(wl, "Bus powerup failed\n");
3938 goto out;
3939 }
3940 /* Get the PHY type. */
3941 if (dev->dev->id.revision >= 5) {
3942 u32 tmshigh;
3943
3944 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3945 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
3946 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
3947 } else
3948 B43_WARN_ON(1);
3949
3950 dev->phy.gmode = have_2ghz_phy;
3951 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3952 b43_wireless_core_reset(dev, tmp);
3953
3954 err = b43_phy_versioning(dev);
3955 if (err)
3956 goto err_powerdown;
3957 /* Check if this device supports multiband. */
3958 if (!pdev ||
3959 (pdev->device != 0x4312 &&
3960 pdev->device != 0x4319 && pdev->device != 0x4324)) {
3961 /* No multiband support. */
3962 have_2ghz_phy = 0;
3963 have_5ghz_phy = 0;
3964 switch (dev->phy.type) {
3965 case B43_PHYTYPE_A:
3966 have_5ghz_phy = 1;
3967 break;
3968 case B43_PHYTYPE_G:
3969 case B43_PHYTYPE_N:
3970 have_2ghz_phy = 1;
3971 break;
3972 default:
3973 B43_WARN_ON(1);
3974 }
3975 }
3976 if (dev->phy.type == B43_PHYTYPE_A) {
3977 /* FIXME */
3978 b43err(wl, "IEEE 802.11a devices are unsupported\n");
3979 err = -EOPNOTSUPP;
3980 goto err_powerdown;
3981 }
3982 dev->phy.gmode = have_2ghz_phy;
3983 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3984 b43_wireless_core_reset(dev, tmp);
3985
3986 err = b43_validate_chipaccess(dev);
3987 if (err)
3988 goto err_powerdown;
3989 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
3990 if (err)
3991 goto err_powerdown;
3992
3993 /* Now set some default "current_dev" */
3994 if (!wl->current_dev)
3995 wl->current_dev = dev;
3996 INIT_WORK(&dev->restart_work, b43_chip_reset);
3997
3998 b43_radio_turn_off(dev, 1);
3999 b43_switch_analog(dev, 0);
4000 ssb_device_disable(dev->dev, 0);
4001 ssb_bus_may_powerdown(bus);
4002
4003 out:
4004 return err;
4005
4006 err_powerdown:
4007 ssb_bus_may_powerdown(bus);
4008 return err;
4009 }
4010
4011 static void b43_one_core_detach(struct ssb_device *dev)
4012 {
4013 struct b43_wldev *wldev;
4014 struct b43_wl *wl;
4015
4016 wldev = ssb_get_drvdata(dev);
4017 wl = wldev->wl;
4018 cancel_work_sync(&wldev->restart_work);
4019 b43_debugfs_remove_device(wldev);
4020 b43_wireless_core_detach(wldev);
4021 list_del(&wldev->list);
4022 wl->nr_devs--;
4023 ssb_set_drvdata(dev, NULL);
4024 kfree(wldev);
4025 }
4026
4027 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4028 {
4029 struct b43_wldev *wldev;
4030 struct pci_dev *pdev;
4031 int err = -ENOMEM;
4032
4033 if (!list_empty(&wl->devlist)) {
4034 /* We are not the first core on this chip. */
4035 pdev = dev->bus->host_pci;
4036 /* Only special chips support more than one wireless
4037 * core, although some of the other chips have more than
4038 * one wireless core as well. Check for this and
4039 * bail out early.
4040 */
4041 if (!pdev ||
4042 ((pdev->device != 0x4321) &&
4043 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4044 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4045 return -ENODEV;
4046 }
4047 }
4048
4049 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4050 if (!wldev)
4051 goto out;
4052
4053 wldev->dev = dev;
4054 wldev->wl = wl;
4055 b43_set_status(wldev, B43_STAT_UNINIT);
4056 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4057 tasklet_init(&wldev->isr_tasklet,
4058 (void (*)(unsigned long))b43_interrupt_tasklet,
4059 (unsigned long)wldev);
4060 INIT_LIST_HEAD(&wldev->list);
4061
4062 err = b43_wireless_core_attach(wldev);
4063 if (err)
4064 goto err_kfree_wldev;
4065
4066 list_add(&wldev->list, &wl->devlist);
4067 wl->nr_devs++;
4068 ssb_set_drvdata(dev, wldev);
4069 b43_debugfs_add_device(wldev);
4070
4071 out:
4072 return err;
4073
4074 err_kfree_wldev:
4075 kfree(wldev);
4076 return err;
4077 }
4078
4079 static void b43_sprom_fixup(struct ssb_bus *bus)
4080 {
4081 /* boardflags workarounds */
4082 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4083 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4084 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4085 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4086 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4087 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4088 }
4089
4090 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4091 {
4092 struct ieee80211_hw *hw = wl->hw;
4093
4094 ssb_set_devtypedata(dev, NULL);
4095 ieee80211_free_hw(hw);
4096 }
4097
4098 static int b43_wireless_init(struct ssb_device *dev)
4099 {
4100 struct ssb_sprom *sprom = &dev->bus->sprom;
4101 struct ieee80211_hw *hw;
4102 struct b43_wl *wl;
4103 int err = -ENOMEM;
4104
4105 b43_sprom_fixup(dev->bus);
4106
4107 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4108 if (!hw) {
4109 b43err(NULL, "Could not allocate ieee80211 device\n");
4110 goto out;
4111 }
4112
4113 /* fill hw info */
4114 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
4115 IEEE80211_HW_RX_INCLUDES_FCS;
4116 hw->max_signal = 100;
4117 hw->max_rssi = -110;
4118 hw->max_noise = -110;
4119 hw->queues = 1; /* FIXME: hardware has more queues */
4120 SET_IEEE80211_DEV(hw, dev->dev);
4121 if (is_valid_ether_addr(sprom->et1mac))
4122 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4123 else
4124 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4125
4126 /* Get and initialize struct b43_wl */
4127 wl = hw_to_b43_wl(hw);
4128 memset(wl, 0, sizeof(*wl));
4129 wl->hw = hw;
4130 spin_lock_init(&wl->irq_lock);
4131 spin_lock_init(&wl->leds_lock);
4132 spin_lock_init(&wl->shm_lock);
4133 mutex_init(&wl->mutex);
4134 INIT_LIST_HEAD(&wl->devlist);
4135
4136 ssb_set_devtypedata(dev, wl);
4137 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4138 err = 0;
4139 out:
4140 return err;
4141 }
4142
4143 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4144 {
4145 struct b43_wl *wl;
4146 int err;
4147 int first = 0;
4148
4149 wl = ssb_get_devtypedata(dev);
4150 if (!wl) {
4151 /* Probing the first core. Must setup common struct b43_wl */
4152 first = 1;
4153 err = b43_wireless_init(dev);
4154 if (err)
4155 goto out;
4156 wl = ssb_get_devtypedata(dev);
4157 B43_WARN_ON(!wl);
4158 }
4159 err = b43_one_core_attach(dev, wl);
4160 if (err)
4161 goto err_wireless_exit;
4162
4163 if (first) {
4164 err = ieee80211_register_hw(wl->hw);
4165 if (err)
4166 goto err_one_core_detach;
4167 }
4168
4169 out:
4170 return err;
4171
4172 err_one_core_detach:
4173 b43_one_core_detach(dev);
4174 err_wireless_exit:
4175 if (first)
4176 b43_wireless_exit(dev, wl);
4177 return err;
4178 }
4179
4180 static void b43_remove(struct ssb_device *dev)
4181 {
4182 struct b43_wl *wl = ssb_get_devtypedata(dev);
4183 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4184
4185 B43_WARN_ON(!wl);
4186 if (wl->current_dev == wldev)
4187 ieee80211_unregister_hw(wl->hw);
4188
4189 b43_one_core_detach(dev);
4190
4191 if (list_empty(&wl->devlist)) {
4192 /* Last core on the chip unregistered.
4193 * We can destroy common struct b43_wl.
4194 */
4195 b43_wireless_exit(dev, wl);
4196 }
4197 }
4198
4199 /* Perform a hardware reset. This can be called from any context. */
4200 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4201 {
4202 /* Must avoid requeueing, if we are in shutdown. */
4203 if (b43_status(dev) < B43_STAT_INITIALIZED)
4204 return;
4205 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4206 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4207 }
4208
4209 #ifdef CONFIG_PM
4210
4211 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4212 {
4213 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4214 struct b43_wl *wl = wldev->wl;
4215
4216 b43dbg(wl, "Suspending...\n");
4217
4218 mutex_lock(&wl->mutex);
4219 wldev->suspend_in_progress = true;
4220 wldev->suspend_init_status = b43_status(wldev);
4221 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4222 b43_wireless_core_stop(wldev);
4223 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4224 b43_wireless_core_exit(wldev);
4225 mutex_unlock(&wl->mutex);
4226
4227 b43dbg(wl, "Device suspended.\n");
4228
4229 return 0;
4230 }
4231
4232 static int b43_resume(struct ssb_device *dev)
4233 {
4234 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4235 struct b43_wl *wl = wldev->wl;
4236 int err = 0;
4237
4238 b43dbg(wl, "Resuming...\n");
4239
4240 mutex_lock(&wl->mutex);
4241 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4242 err = b43_wireless_core_init(wldev);
4243 if (err) {
4244 b43err(wl, "Resume failed at core init\n");
4245 goto out;
4246 }
4247 }
4248 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4249 err = b43_wireless_core_start(wldev);
4250 if (err) {
4251 b43_leds_exit(wldev);
4252 b43_rng_exit(wldev->wl, true);
4253 b43_wireless_core_exit(wldev);
4254 b43err(wl, "Resume failed at core start\n");
4255 goto out;
4256 }
4257 }
4258 b43dbg(wl, "Device resumed.\n");
4259 out:
4260 wldev->suspend_in_progress = false;
4261 mutex_unlock(&wl->mutex);
4262 return err;
4263 }
4264
4265 #else /* CONFIG_PM */
4266 # define b43_suspend NULL
4267 # define b43_resume NULL
4268 #endif /* CONFIG_PM */
4269
4270 static struct ssb_driver b43_ssb_driver = {
4271 .name = KBUILD_MODNAME,
4272 .id_table = b43_ssb_tbl,
4273 .probe = b43_probe,
4274 .remove = b43_remove,
4275 .suspend = b43_suspend,
4276 .resume = b43_resume,
4277 };
4278
4279 static void b43_print_driverinfo(void)
4280 {
4281 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4282 *feat_leds = "", *feat_rfkill = "";
4283
4284 #ifdef CONFIG_B43_PCI_AUTOSELECT
4285 feat_pci = "P";
4286 #endif
4287 #ifdef CONFIG_B43_PCMCIA
4288 feat_pcmcia = "M";
4289 #endif
4290 #ifdef CONFIG_B43_NPHY
4291 feat_nphy = "N";
4292 #endif
4293 #ifdef CONFIG_B43_LEDS
4294 feat_leds = "L";
4295 #endif
4296 #ifdef CONFIG_B43_RFKILL
4297 feat_rfkill = "R";
4298 #endif
4299 printk(KERN_INFO "Broadcom 43xx driver loaded "
4300 "[ Features: %s%s%s%s%s, Firmware-ID: "
4301 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4302 feat_pci, feat_pcmcia, feat_nphy,
4303 feat_leds, feat_rfkill);
4304 }
4305
4306 static int __init b43_init(void)
4307 {
4308 int err;
4309
4310 b43_debugfs_init();
4311 err = b43_pcmcia_init();
4312 if (err)
4313 goto err_dfs_exit;
4314 err = ssb_driver_register(&b43_ssb_driver);
4315 if (err)
4316 goto err_pcmcia_exit;
4317 b43_print_driverinfo();
4318
4319 return err;
4320
4321 err_pcmcia_exit:
4322 b43_pcmcia_exit();
4323 err_dfs_exit:
4324 b43_debugfs_exit();
4325 return err;
4326 }
4327
4328 static void __exit b43_exit(void)
4329 {
4330 ssb_driver_unregister(&b43_ssb_driver);
4331 b43_pcmcia_exit();
4332 b43_debugfs_exit();
4333 }
4334
4335 module_init(b43_init)
4336 module_exit(b43_exit)
Linux kernel - Deliverables
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