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mac80211: share STA information with driver
[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/firmware.h>
37 #include <linux/wireless.h>
38 #include <linux/workqueue.h>
39 #include <linux/skbuff.h>
40 #include <linux/io.h>
41 #include <linux/dma-mapping.h>
42 #include <asm/unaligned.h>
43
44 #include "b43.h"
45 #include "main.h"
46 #include "debugfs.h"
47 #include "phy_common.h"
48 #include "phy_g.h"
49 #include "phy_n.h"
50 #include "dma.h"
51 #include "pio.h"
52 #include "sysfs.h"
53 #include "xmit.h"
54 #include "lo.h"
55 #include "pcmcia.h"
56
57 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
58 MODULE_AUTHOR("Martin Langer");
59 MODULE_AUTHOR("Stefano Brivio");
60 MODULE_AUTHOR("Michael Buesch");
61 MODULE_LICENSE("GPL");
62
63 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
64
65
66 static int modparam_bad_frames_preempt;
67 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
68 MODULE_PARM_DESC(bad_frames_preempt,
69 "enable(1) / disable(0) Bad Frames Preemption");
70
71 static char modparam_fwpostfix[16];
72 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
73 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
74
75 static int modparam_hwpctl;
76 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
77 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
78
79 static int modparam_nohwcrypt;
80 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
81 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
82
83 int b43_modparam_qos = 1;
84 module_param_named(qos, b43_modparam_qos, int, 0444);
85 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
86
87 static int modparam_btcoex = 1;
88 module_param_named(btcoex, modparam_btcoex, int, 0444);
89 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistance (default on)");
90
91
92 static const struct ssb_device_id b43_ssb_tbl[] = {
93 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
94 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
95 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
96 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
97 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
98 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
99 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
100 SSB_DEVTABLE_END
101 };
102
103 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
104
105 /* Channel and ratetables are shared for all devices.
106 * They can't be const, because ieee80211 puts some precalculated
107 * data in there. This data is the same for all devices, so we don't
108 * get concurrency issues */
109 #define RATETAB_ENT(_rateid, _flags) \
110 { \
111 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
112 .hw_value = (_rateid), \
113 .flags = (_flags), \
114 }
115
116 /*
117 * NOTE: When changing this, sync with xmit.c's
118 * b43_plcp_get_bitrate_idx_* functions!
119 */
120 static struct ieee80211_rate __b43_ratetable[] = {
121 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
122 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
123 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
124 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
125 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
126 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
127 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
128 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
129 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
130 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
131 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
132 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
133 };
134
135 #define b43_a_ratetable (__b43_ratetable + 4)
136 #define b43_a_ratetable_size 8
137 #define b43_b_ratetable (__b43_ratetable + 0)
138 #define b43_b_ratetable_size 4
139 #define b43_g_ratetable (__b43_ratetable + 0)
140 #define b43_g_ratetable_size 12
141
142 #define CHAN4G(_channel, _freq, _flags) { \
143 .band = IEEE80211_BAND_2GHZ, \
144 .center_freq = (_freq), \
145 .hw_value = (_channel), \
146 .flags = (_flags), \
147 .max_antenna_gain = 0, \
148 .max_power = 30, \
149 }
150 static struct ieee80211_channel b43_2ghz_chantable[] = {
151 CHAN4G(1, 2412, 0),
152 CHAN4G(2, 2417, 0),
153 CHAN4G(3, 2422, 0),
154 CHAN4G(4, 2427, 0),
155 CHAN4G(5, 2432, 0),
156 CHAN4G(6, 2437, 0),
157 CHAN4G(7, 2442, 0),
158 CHAN4G(8, 2447, 0),
159 CHAN4G(9, 2452, 0),
160 CHAN4G(10, 2457, 0),
161 CHAN4G(11, 2462, 0),
162 CHAN4G(12, 2467, 0),
163 CHAN4G(13, 2472, 0),
164 CHAN4G(14, 2484, 0),
165 };
166 #undef CHAN4G
167
168 #define CHAN5G(_channel, _flags) { \
169 .band = IEEE80211_BAND_5GHZ, \
170 .center_freq = 5000 + (5 * (_channel)), \
171 .hw_value = (_channel), \
172 .flags = (_flags), \
173 .max_antenna_gain = 0, \
174 .max_power = 30, \
175 }
176 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
177 CHAN5G(32, 0), CHAN5G(34, 0),
178 CHAN5G(36, 0), CHAN5G(38, 0),
179 CHAN5G(40, 0), CHAN5G(42, 0),
180 CHAN5G(44, 0), CHAN5G(46, 0),
181 CHAN5G(48, 0), CHAN5G(50, 0),
182 CHAN5G(52, 0), CHAN5G(54, 0),
183 CHAN5G(56, 0), CHAN5G(58, 0),
184 CHAN5G(60, 0), CHAN5G(62, 0),
185 CHAN5G(64, 0), CHAN5G(66, 0),
186 CHAN5G(68, 0), CHAN5G(70, 0),
187 CHAN5G(72, 0), CHAN5G(74, 0),
188 CHAN5G(76, 0), CHAN5G(78, 0),
189 CHAN5G(80, 0), CHAN5G(82, 0),
190 CHAN5G(84, 0), CHAN5G(86, 0),
191 CHAN5G(88, 0), CHAN5G(90, 0),
192 CHAN5G(92, 0), CHAN5G(94, 0),
193 CHAN5G(96, 0), CHAN5G(98, 0),
194 CHAN5G(100, 0), CHAN5G(102, 0),
195 CHAN5G(104, 0), CHAN5G(106, 0),
196 CHAN5G(108, 0), CHAN5G(110, 0),
197 CHAN5G(112, 0), CHAN5G(114, 0),
198 CHAN5G(116, 0), CHAN5G(118, 0),
199 CHAN5G(120, 0), CHAN5G(122, 0),
200 CHAN5G(124, 0), CHAN5G(126, 0),
201 CHAN5G(128, 0), CHAN5G(130, 0),
202 CHAN5G(132, 0), CHAN5G(134, 0),
203 CHAN5G(136, 0), CHAN5G(138, 0),
204 CHAN5G(140, 0), CHAN5G(142, 0),
205 CHAN5G(144, 0), CHAN5G(145, 0),
206 CHAN5G(146, 0), CHAN5G(147, 0),
207 CHAN5G(148, 0), CHAN5G(149, 0),
208 CHAN5G(150, 0), CHAN5G(151, 0),
209 CHAN5G(152, 0), CHAN5G(153, 0),
210 CHAN5G(154, 0), CHAN5G(155, 0),
211 CHAN5G(156, 0), CHAN5G(157, 0),
212 CHAN5G(158, 0), CHAN5G(159, 0),
213 CHAN5G(160, 0), CHAN5G(161, 0),
214 CHAN5G(162, 0), CHAN5G(163, 0),
215 CHAN5G(164, 0), CHAN5G(165, 0),
216 CHAN5G(166, 0), CHAN5G(168, 0),
217 CHAN5G(170, 0), CHAN5G(172, 0),
218 CHAN5G(174, 0), CHAN5G(176, 0),
219 CHAN5G(178, 0), CHAN5G(180, 0),
220 CHAN5G(182, 0), CHAN5G(184, 0),
221 CHAN5G(186, 0), CHAN5G(188, 0),
222 CHAN5G(190, 0), CHAN5G(192, 0),
223 CHAN5G(194, 0), CHAN5G(196, 0),
224 CHAN5G(198, 0), CHAN5G(200, 0),
225 CHAN5G(202, 0), CHAN5G(204, 0),
226 CHAN5G(206, 0), CHAN5G(208, 0),
227 CHAN5G(210, 0), CHAN5G(212, 0),
228 CHAN5G(214, 0), CHAN5G(216, 0),
229 CHAN5G(218, 0), CHAN5G(220, 0),
230 CHAN5G(222, 0), CHAN5G(224, 0),
231 CHAN5G(226, 0), CHAN5G(228, 0),
232 };
233
234 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
235 CHAN5G(34, 0), CHAN5G(36, 0),
236 CHAN5G(38, 0), CHAN5G(40, 0),
237 CHAN5G(42, 0), CHAN5G(44, 0),
238 CHAN5G(46, 0), CHAN5G(48, 0),
239 CHAN5G(52, 0), CHAN5G(56, 0),
240 CHAN5G(60, 0), CHAN5G(64, 0),
241 CHAN5G(100, 0), CHAN5G(104, 0),
242 CHAN5G(108, 0), CHAN5G(112, 0),
243 CHAN5G(116, 0), CHAN5G(120, 0),
244 CHAN5G(124, 0), CHAN5G(128, 0),
245 CHAN5G(132, 0), CHAN5G(136, 0),
246 CHAN5G(140, 0), CHAN5G(149, 0),
247 CHAN5G(153, 0), CHAN5G(157, 0),
248 CHAN5G(161, 0), CHAN5G(165, 0),
249 CHAN5G(184, 0), CHAN5G(188, 0),
250 CHAN5G(192, 0), CHAN5G(196, 0),
251 CHAN5G(200, 0), CHAN5G(204, 0),
252 CHAN5G(208, 0), CHAN5G(212, 0),
253 CHAN5G(216, 0),
254 };
255 #undef CHAN5G
256
257 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
258 .band = IEEE80211_BAND_5GHZ,
259 .channels = b43_5ghz_nphy_chantable,
260 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
261 .bitrates = b43_a_ratetable,
262 .n_bitrates = b43_a_ratetable_size,
263 };
264
265 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
266 .band = IEEE80211_BAND_5GHZ,
267 .channels = b43_5ghz_aphy_chantable,
268 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
269 .bitrates = b43_a_ratetable,
270 .n_bitrates = b43_a_ratetable_size,
271 };
272
273 static struct ieee80211_supported_band b43_band_2GHz = {
274 .band = IEEE80211_BAND_2GHZ,
275 .channels = b43_2ghz_chantable,
276 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
277 .bitrates = b43_g_ratetable,
278 .n_bitrates = b43_g_ratetable_size,
279 };
280
281 static void b43_wireless_core_exit(struct b43_wldev *dev);
282 static int b43_wireless_core_init(struct b43_wldev *dev);
283 static void b43_wireless_core_stop(struct b43_wldev *dev);
284 static int b43_wireless_core_start(struct b43_wldev *dev);
285
286 static int b43_ratelimit(struct b43_wl *wl)
287 {
288 if (!wl || !wl->current_dev)
289 return 1;
290 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
291 return 1;
292 /* We are up and running.
293 * Ratelimit the messages to avoid DoS over the net. */
294 return net_ratelimit();
295 }
296
297 void b43info(struct b43_wl *wl, const char *fmt, ...)
298 {
299 va_list args;
300
301 if (!b43_ratelimit(wl))
302 return;
303 va_start(args, fmt);
304 printk(KERN_INFO "b43-%s: ",
305 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
306 vprintk(fmt, args);
307 va_end(args);
308 }
309
310 void b43err(struct b43_wl *wl, const char *fmt, ...)
311 {
312 va_list args;
313
314 if (!b43_ratelimit(wl))
315 return;
316 va_start(args, fmt);
317 printk(KERN_ERR "b43-%s ERROR: ",
318 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
319 vprintk(fmt, args);
320 va_end(args);
321 }
322
323 void b43warn(struct b43_wl *wl, const char *fmt, ...)
324 {
325 va_list args;
326
327 if (!b43_ratelimit(wl))
328 return;
329 va_start(args, fmt);
330 printk(KERN_WARNING "b43-%s warning: ",
331 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
332 vprintk(fmt, args);
333 va_end(args);
334 }
335
336 #if B43_DEBUG
337 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
338 {
339 va_list args;
340
341 va_start(args, fmt);
342 printk(KERN_DEBUG "b43-%s debug: ",
343 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
344 vprintk(fmt, args);
345 va_end(args);
346 }
347 #endif /* DEBUG */
348
349 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
350 {
351 u32 macctl;
352
353 B43_WARN_ON(offset % 4 != 0);
354
355 macctl = b43_read32(dev, B43_MMIO_MACCTL);
356 if (macctl & B43_MACCTL_BE)
357 val = swab32(val);
358
359 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
360 mmiowb();
361 b43_write32(dev, B43_MMIO_RAM_DATA, val);
362 }
363
364 static inline void b43_shm_control_word(struct b43_wldev *dev,
365 u16 routing, u16 offset)
366 {
367 u32 control;
368
369 /* "offset" is the WORD offset. */
370 control = routing;
371 control <<= 16;
372 control |= offset;
373 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
374 }
375
376 u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
377 {
378 u32 ret;
379
380 if (routing == B43_SHM_SHARED) {
381 B43_WARN_ON(offset & 0x0001);
382 if (offset & 0x0003) {
383 /* Unaligned access */
384 b43_shm_control_word(dev, routing, offset >> 2);
385 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
386 ret <<= 16;
387 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
388 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
389
390 goto out;
391 }
392 offset >>= 2;
393 }
394 b43_shm_control_word(dev, routing, offset);
395 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
396 out:
397 return ret;
398 }
399
400 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
401 {
402 struct b43_wl *wl = dev->wl;
403 unsigned long flags;
404 u32 ret;
405
406 spin_lock_irqsave(&wl->shm_lock, flags);
407 ret = __b43_shm_read32(dev, routing, offset);
408 spin_unlock_irqrestore(&wl->shm_lock, flags);
409
410 return ret;
411 }
412
413 u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
414 {
415 u16 ret;
416
417 if (routing == B43_SHM_SHARED) {
418 B43_WARN_ON(offset & 0x0001);
419 if (offset & 0x0003) {
420 /* Unaligned access */
421 b43_shm_control_word(dev, routing, offset >> 2);
422 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
423
424 goto out;
425 }
426 offset >>= 2;
427 }
428 b43_shm_control_word(dev, routing, offset);
429 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
430 out:
431 return ret;
432 }
433
434 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
435 {
436 struct b43_wl *wl = dev->wl;
437 unsigned long flags;
438 u16 ret;
439
440 spin_lock_irqsave(&wl->shm_lock, flags);
441 ret = __b43_shm_read16(dev, routing, offset);
442 spin_unlock_irqrestore(&wl->shm_lock, flags);
443
444 return ret;
445 }
446
447 void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
448 {
449 if (routing == B43_SHM_SHARED) {
450 B43_WARN_ON(offset & 0x0001);
451 if (offset & 0x0003) {
452 /* Unaligned access */
453 b43_shm_control_word(dev, routing, offset >> 2);
454 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
455 (value >> 16) & 0xffff);
456 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
457 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
458 return;
459 }
460 offset >>= 2;
461 }
462 b43_shm_control_word(dev, routing, offset);
463 b43_write32(dev, B43_MMIO_SHM_DATA, value);
464 }
465
466 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
467 {
468 struct b43_wl *wl = dev->wl;
469 unsigned long flags;
470
471 spin_lock_irqsave(&wl->shm_lock, flags);
472 __b43_shm_write32(dev, routing, offset, value);
473 spin_unlock_irqrestore(&wl->shm_lock, flags);
474 }
475
476 void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
477 {
478 if (routing == B43_SHM_SHARED) {
479 B43_WARN_ON(offset & 0x0001);
480 if (offset & 0x0003) {
481 /* Unaligned access */
482 b43_shm_control_word(dev, routing, offset >> 2);
483 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
484 return;
485 }
486 offset >>= 2;
487 }
488 b43_shm_control_word(dev, routing, offset);
489 b43_write16(dev, B43_MMIO_SHM_DATA, value);
490 }
491
492 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
493 {
494 struct b43_wl *wl = dev->wl;
495 unsigned long flags;
496
497 spin_lock_irqsave(&wl->shm_lock, flags);
498 __b43_shm_write16(dev, routing, offset, value);
499 spin_unlock_irqrestore(&wl->shm_lock, flags);
500 }
501
502 /* Read HostFlags */
503 u64 b43_hf_read(struct b43_wldev * dev)
504 {
505 u64 ret;
506
507 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
508 ret <<= 16;
509 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
510 ret <<= 16;
511 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
512
513 return ret;
514 }
515
516 /* Write HostFlags */
517 void b43_hf_write(struct b43_wldev *dev, u64 value)
518 {
519 u16 lo, mi, hi;
520
521 lo = (value & 0x00000000FFFFULL);
522 mi = (value & 0x0000FFFF0000ULL) >> 16;
523 hi = (value & 0xFFFF00000000ULL) >> 32;
524 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
525 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
526 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
527 }
528
529 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
530 {
531 /* We need to be careful. As we read the TSF from multiple
532 * registers, we should take care of register overflows.
533 * In theory, the whole tsf read process should be atomic.
534 * We try to be atomic here, by restaring the read process,
535 * if any of the high registers changed (overflew).
536 */
537 if (dev->dev->id.revision >= 3) {
538 u32 low, high, high2;
539
540 do {
541 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
542 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
543 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
544 } while (unlikely(high != high2));
545
546 *tsf = high;
547 *tsf <<= 32;
548 *tsf |= low;
549 } else {
550 u64 tmp;
551 u16 v0, v1, v2, v3;
552 u16 test1, test2, test3;
553
554 do {
555 v3 = b43_read16(dev, B43_MMIO_TSF_3);
556 v2 = b43_read16(dev, B43_MMIO_TSF_2);
557 v1 = b43_read16(dev, B43_MMIO_TSF_1);
558 v0 = b43_read16(dev, B43_MMIO_TSF_0);
559
560 test3 = b43_read16(dev, B43_MMIO_TSF_3);
561 test2 = b43_read16(dev, B43_MMIO_TSF_2);
562 test1 = b43_read16(dev, B43_MMIO_TSF_1);
563 } while (v3 != test3 || v2 != test2 || v1 != test1);
564
565 *tsf = v3;
566 *tsf <<= 48;
567 tmp = v2;
568 tmp <<= 32;
569 *tsf |= tmp;
570 tmp = v1;
571 tmp <<= 16;
572 *tsf |= tmp;
573 *tsf |= v0;
574 }
575 }
576
577 static void b43_time_lock(struct b43_wldev *dev)
578 {
579 u32 macctl;
580
581 macctl = b43_read32(dev, B43_MMIO_MACCTL);
582 macctl |= B43_MACCTL_TBTTHOLD;
583 b43_write32(dev, B43_MMIO_MACCTL, macctl);
584 /* Commit the write */
585 b43_read32(dev, B43_MMIO_MACCTL);
586 }
587
588 static void b43_time_unlock(struct b43_wldev *dev)
589 {
590 u32 macctl;
591
592 macctl = b43_read32(dev, B43_MMIO_MACCTL);
593 macctl &= ~B43_MACCTL_TBTTHOLD;
594 b43_write32(dev, B43_MMIO_MACCTL, macctl);
595 /* Commit the write */
596 b43_read32(dev, B43_MMIO_MACCTL);
597 }
598
599 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
600 {
601 /* Be careful with the in-progress timer.
602 * First zero out the low register, so we have a full
603 * register-overflow duration to complete the operation.
604 */
605 if (dev->dev->id.revision >= 3) {
606 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
607 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
608
609 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
610 mmiowb();
611 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
612 mmiowb();
613 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
614 } else {
615 u16 v0 = (tsf & 0x000000000000FFFFULL);
616 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
617 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
618 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
619
620 b43_write16(dev, B43_MMIO_TSF_0, 0);
621 mmiowb();
622 b43_write16(dev, B43_MMIO_TSF_3, v3);
623 mmiowb();
624 b43_write16(dev, B43_MMIO_TSF_2, v2);
625 mmiowb();
626 b43_write16(dev, B43_MMIO_TSF_1, v1);
627 mmiowb();
628 b43_write16(dev, B43_MMIO_TSF_0, v0);
629 }
630 }
631
632 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
633 {
634 b43_time_lock(dev);
635 b43_tsf_write_locked(dev, tsf);
636 b43_time_unlock(dev);
637 }
638
639 static
640 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
641 {
642 static const u8 zero_addr[ETH_ALEN] = { 0 };
643 u16 data;
644
645 if (!mac)
646 mac = zero_addr;
647
648 offset |= 0x0020;
649 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
650
651 data = mac[0];
652 data |= mac[1] << 8;
653 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
654 data = mac[2];
655 data |= mac[3] << 8;
656 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
657 data = mac[4];
658 data |= mac[5] << 8;
659 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
660 }
661
662 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
663 {
664 const u8 *mac;
665 const u8 *bssid;
666 u8 mac_bssid[ETH_ALEN * 2];
667 int i;
668 u32 tmp;
669
670 bssid = dev->wl->bssid;
671 mac = dev->wl->mac_addr;
672
673 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
674
675 memcpy(mac_bssid, mac, ETH_ALEN);
676 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
677
678 /* Write our MAC address and BSSID to template ram */
679 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
680 tmp = (u32) (mac_bssid[i + 0]);
681 tmp |= (u32) (mac_bssid[i + 1]) << 8;
682 tmp |= (u32) (mac_bssid[i + 2]) << 16;
683 tmp |= (u32) (mac_bssid[i + 3]) << 24;
684 b43_ram_write(dev, 0x20 + i, tmp);
685 }
686 }
687
688 static void b43_upload_card_macaddress(struct b43_wldev *dev)
689 {
690 b43_write_mac_bssid_templates(dev);
691 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
692 }
693
694 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
695 {
696 /* slot_time is in usec. */
697 if (dev->phy.type != B43_PHYTYPE_G)
698 return;
699 b43_write16(dev, 0x684, 510 + slot_time);
700 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
701 }
702
703 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
704 {
705 b43_set_slot_time(dev, 9);
706 dev->short_slot = 1;
707 }
708
709 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
710 {
711 b43_set_slot_time(dev, 20);
712 dev->short_slot = 0;
713 }
714
715 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
716 * Returns the _previously_ enabled IRQ mask.
717 */
718 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
719 {
720 u32 old_mask;
721
722 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
723 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
724
725 return old_mask;
726 }
727
728 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
729 * Returns the _previously_ enabled IRQ mask.
730 */
731 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
732 {
733 u32 old_mask;
734
735 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
736 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
737
738 return old_mask;
739 }
740
741 /* Synchronize IRQ top- and bottom-half.
742 * IRQs must be masked before calling this.
743 * This must not be called with the irq_lock held.
744 */
745 static void b43_synchronize_irq(struct b43_wldev *dev)
746 {
747 synchronize_irq(dev->dev->irq);
748 tasklet_kill(&dev->isr_tasklet);
749 }
750
751 /* DummyTransmission function, as documented on
752 * http://bcm-specs.sipsolutions.net/DummyTransmission
753 */
754 void b43_dummy_transmission(struct b43_wldev *dev)
755 {
756 struct b43_wl *wl = dev->wl;
757 struct b43_phy *phy = &dev->phy;
758 unsigned int i, max_loop;
759 u16 value;
760 u32 buffer[5] = {
761 0x00000000,
762 0x00D40000,
763 0x00000000,
764 0x01000000,
765 0x00000000,
766 };
767
768 switch (phy->type) {
769 case B43_PHYTYPE_A:
770 max_loop = 0x1E;
771 buffer[0] = 0x000201CC;
772 break;
773 case B43_PHYTYPE_B:
774 case B43_PHYTYPE_G:
775 max_loop = 0xFA;
776 buffer[0] = 0x000B846E;
777 break;
778 default:
779 B43_WARN_ON(1);
780 return;
781 }
782
783 spin_lock_irq(&wl->irq_lock);
784 write_lock(&wl->tx_lock);
785
786 for (i = 0; i < 5; i++)
787 b43_ram_write(dev, i * 4, buffer[i]);
788
789 /* Commit writes */
790 b43_read32(dev, B43_MMIO_MACCTL);
791
792 b43_write16(dev, 0x0568, 0x0000);
793 b43_write16(dev, 0x07C0, 0x0000);
794 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
795 b43_write16(dev, 0x050C, value);
796 b43_write16(dev, 0x0508, 0x0000);
797 b43_write16(dev, 0x050A, 0x0000);
798 b43_write16(dev, 0x054C, 0x0000);
799 b43_write16(dev, 0x056A, 0x0014);
800 b43_write16(dev, 0x0568, 0x0826);
801 b43_write16(dev, 0x0500, 0x0000);
802 b43_write16(dev, 0x0502, 0x0030);
803
804 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
805 b43_radio_write16(dev, 0x0051, 0x0017);
806 for (i = 0x00; i < max_loop; i++) {
807 value = b43_read16(dev, 0x050E);
808 if (value & 0x0080)
809 break;
810 udelay(10);
811 }
812 for (i = 0x00; i < 0x0A; i++) {
813 value = b43_read16(dev, 0x050E);
814 if (value & 0x0400)
815 break;
816 udelay(10);
817 }
818 for (i = 0x00; i < 0x0A; i++) {
819 value = b43_read16(dev, 0x0690);
820 if (!(value & 0x0100))
821 break;
822 udelay(10);
823 }
824 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
825 b43_radio_write16(dev, 0x0051, 0x0037);
826
827 write_unlock(&wl->tx_lock);
828 spin_unlock_irq(&wl->irq_lock);
829 }
830
831 static void key_write(struct b43_wldev *dev,
832 u8 index, u8 algorithm, const u8 * key)
833 {
834 unsigned int i;
835 u32 offset;
836 u16 value;
837 u16 kidx;
838
839 /* Key index/algo block */
840 kidx = b43_kidx_to_fw(dev, index);
841 value = ((kidx << 4) | algorithm);
842 b43_shm_write16(dev, B43_SHM_SHARED,
843 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
844
845 /* Write the key to the Key Table Pointer offset */
846 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
847 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
848 value = key[i];
849 value |= (u16) (key[i + 1]) << 8;
850 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
851 }
852 }
853
854 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
855 {
856 u32 addrtmp[2] = { 0, 0, };
857 u8 per_sta_keys_start = 8;
858
859 if (b43_new_kidx_api(dev))
860 per_sta_keys_start = 4;
861
862 B43_WARN_ON(index < per_sta_keys_start);
863 /* We have two default TX keys and possibly two default RX keys.
864 * Physical mac 0 is mapped to physical key 4 or 8, depending
865 * on the firmware version.
866 * So we must adjust the index here.
867 */
868 index -= per_sta_keys_start;
869
870 if (addr) {
871 addrtmp[0] = addr[0];
872 addrtmp[0] |= ((u32) (addr[1]) << 8);
873 addrtmp[0] |= ((u32) (addr[2]) << 16);
874 addrtmp[0] |= ((u32) (addr[3]) << 24);
875 addrtmp[1] = addr[4];
876 addrtmp[1] |= ((u32) (addr[5]) << 8);
877 }
878
879 if (dev->dev->id.revision >= 5) {
880 /* Receive match transmitter address mechanism */
881 b43_shm_write32(dev, B43_SHM_RCMTA,
882 (index * 2) + 0, addrtmp[0]);
883 b43_shm_write16(dev, B43_SHM_RCMTA,
884 (index * 2) + 1, addrtmp[1]);
885 } else {
886 /* RXE (Receive Engine) and
887 * PSM (Programmable State Machine) mechanism
888 */
889 if (index < 8) {
890 /* TODO write to RCM 16, 19, 22 and 25 */
891 } else {
892 b43_shm_write32(dev, B43_SHM_SHARED,
893 B43_SHM_SH_PSM + (index * 6) + 0,
894 addrtmp[0]);
895 b43_shm_write16(dev, B43_SHM_SHARED,
896 B43_SHM_SH_PSM + (index * 6) + 4,
897 addrtmp[1]);
898 }
899 }
900 }
901
902 static void do_key_write(struct b43_wldev *dev,
903 u8 index, u8 algorithm,
904 const u8 * key, size_t key_len, const u8 * mac_addr)
905 {
906 u8 buf[B43_SEC_KEYSIZE] = { 0, };
907 u8 per_sta_keys_start = 8;
908
909 if (b43_new_kidx_api(dev))
910 per_sta_keys_start = 4;
911
912 B43_WARN_ON(index >= dev->max_nr_keys);
913 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
914
915 if (index >= per_sta_keys_start)
916 keymac_write(dev, index, NULL); /* First zero out mac. */
917 if (key)
918 memcpy(buf, key, key_len);
919 key_write(dev, index, algorithm, buf);
920 if (index >= per_sta_keys_start)
921 keymac_write(dev, index, mac_addr);
922
923 dev->key[index].algorithm = algorithm;
924 }
925
926 static int b43_key_write(struct b43_wldev *dev,
927 int index, u8 algorithm,
928 const u8 * key, size_t key_len,
929 const u8 * mac_addr,
930 struct ieee80211_key_conf *keyconf)
931 {
932 int i;
933 int sta_keys_start;
934
935 if (key_len > B43_SEC_KEYSIZE)
936 return -EINVAL;
937 for (i = 0; i < dev->max_nr_keys; i++) {
938 /* Check that we don't already have this key. */
939 B43_WARN_ON(dev->key[i].keyconf == keyconf);
940 }
941 if (index < 0) {
942 /* Either pairwise key or address is 00:00:00:00:00:00
943 * for transmit-only keys. Search the index. */
944 if (b43_new_kidx_api(dev))
945 sta_keys_start = 4;
946 else
947 sta_keys_start = 8;
948 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
949 if (!dev->key[i].keyconf) {
950 /* found empty */
951 index = i;
952 break;
953 }
954 }
955 if (index < 0) {
956 b43err(dev->wl, "Out of hardware key memory\n");
957 return -ENOSPC;
958 }
959 } else
960 B43_WARN_ON(index > 3);
961
962 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
963 if ((index <= 3) && !b43_new_kidx_api(dev)) {
964 /* Default RX key */
965 B43_WARN_ON(mac_addr);
966 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
967 }
968 keyconf->hw_key_idx = index;
969 dev->key[index].keyconf = keyconf;
970
971 return 0;
972 }
973
974 static int b43_key_clear(struct b43_wldev *dev, int index)
975 {
976 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
977 return -EINVAL;
978 do_key_write(dev, index, B43_SEC_ALGO_NONE,
979 NULL, B43_SEC_KEYSIZE, NULL);
980 if ((index <= 3) && !b43_new_kidx_api(dev)) {
981 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
982 NULL, B43_SEC_KEYSIZE, NULL);
983 }
984 dev->key[index].keyconf = NULL;
985
986 return 0;
987 }
988
989 static void b43_clear_keys(struct b43_wldev *dev)
990 {
991 int i;
992
993 for (i = 0; i < dev->max_nr_keys; i++)
994 b43_key_clear(dev, i);
995 }
996
997 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
998 {
999 u32 macctl;
1000 u16 ucstat;
1001 bool hwps;
1002 bool awake;
1003 int i;
1004
1005 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1006 (ps_flags & B43_PS_DISABLED));
1007 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1008
1009 if (ps_flags & B43_PS_ENABLED) {
1010 hwps = 1;
1011 } else if (ps_flags & B43_PS_DISABLED) {
1012 hwps = 0;
1013 } else {
1014 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1015 // and thus is not an AP and we are associated, set bit 25
1016 }
1017 if (ps_flags & B43_PS_AWAKE) {
1018 awake = 1;
1019 } else if (ps_flags & B43_PS_ASLEEP) {
1020 awake = 0;
1021 } else {
1022 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1023 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1024 // successful, set bit26
1025 }
1026
1027 /* FIXME: For now we force awake-on and hwps-off */
1028 hwps = 0;
1029 awake = 1;
1030
1031 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1032 if (hwps)
1033 macctl |= B43_MACCTL_HWPS;
1034 else
1035 macctl &= ~B43_MACCTL_HWPS;
1036 if (awake)
1037 macctl |= B43_MACCTL_AWAKE;
1038 else
1039 macctl &= ~B43_MACCTL_AWAKE;
1040 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1041 /* Commit write */
1042 b43_read32(dev, B43_MMIO_MACCTL);
1043 if (awake && dev->dev->id.revision >= 5) {
1044 /* Wait for the microcode to wake up. */
1045 for (i = 0; i < 100; i++) {
1046 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1047 B43_SHM_SH_UCODESTAT);
1048 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1049 break;
1050 udelay(10);
1051 }
1052 }
1053 }
1054
1055 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1056 {
1057 u32 tmslow;
1058 u32 macctl;
1059
1060 flags |= B43_TMSLOW_PHYCLKEN;
1061 flags |= B43_TMSLOW_PHYRESET;
1062 ssb_device_enable(dev->dev, flags);
1063 msleep(2); /* Wait for the PLL to turn on. */
1064
1065 /* Now take the PHY out of Reset again */
1066 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1067 tmslow |= SSB_TMSLOW_FGC;
1068 tmslow &= ~B43_TMSLOW_PHYRESET;
1069 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1070 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1071 msleep(1);
1072 tmslow &= ~SSB_TMSLOW_FGC;
1073 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1074 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1075 msleep(1);
1076
1077 /* Turn Analog ON, but only if we already know the PHY-type.
1078 * This protects against very early setup where we don't know the
1079 * PHY-type, yet. wireless_core_reset will be called once again later,
1080 * when we know the PHY-type. */
1081 if (dev->phy.ops)
1082 dev->phy.ops->switch_analog(dev, 1);
1083
1084 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1085 macctl &= ~B43_MACCTL_GMODE;
1086 if (flags & B43_TMSLOW_GMODE)
1087 macctl |= B43_MACCTL_GMODE;
1088 macctl |= B43_MACCTL_IHR_ENABLED;
1089 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1090 }
1091
1092 static void handle_irq_transmit_status(struct b43_wldev *dev)
1093 {
1094 u32 v0, v1;
1095 u16 tmp;
1096 struct b43_txstatus stat;
1097
1098 while (1) {
1099 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1100 if (!(v0 & 0x00000001))
1101 break;
1102 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1103
1104 stat.cookie = (v0 >> 16);
1105 stat.seq = (v1 & 0x0000FFFF);
1106 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1107 tmp = (v0 & 0x0000FFFF);
1108 stat.frame_count = ((tmp & 0xF000) >> 12);
1109 stat.rts_count = ((tmp & 0x0F00) >> 8);
1110 stat.supp_reason = ((tmp & 0x001C) >> 2);
1111 stat.pm_indicated = !!(tmp & 0x0080);
1112 stat.intermediate = !!(tmp & 0x0040);
1113 stat.for_ampdu = !!(tmp & 0x0020);
1114 stat.acked = !!(tmp & 0x0002);
1115
1116 b43_handle_txstatus(dev, &stat);
1117 }
1118 }
1119
1120 static void drain_txstatus_queue(struct b43_wldev *dev)
1121 {
1122 u32 dummy;
1123
1124 if (dev->dev->id.revision < 5)
1125 return;
1126 /* Read all entries from the microcode TXstatus FIFO
1127 * and throw them away.
1128 */
1129 while (1) {
1130 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1131 if (!(dummy & 0x00000001))
1132 break;
1133 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1134 }
1135 }
1136
1137 static u32 b43_jssi_read(struct b43_wldev *dev)
1138 {
1139 u32 val = 0;
1140
1141 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1142 val <<= 16;
1143 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1144
1145 return val;
1146 }
1147
1148 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1149 {
1150 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1151 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1152 }
1153
1154 static void b43_generate_noise_sample(struct b43_wldev *dev)
1155 {
1156 b43_jssi_write(dev, 0x7F7F7F7F);
1157 b43_write32(dev, B43_MMIO_MACCMD,
1158 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1159 }
1160
1161 static void b43_calculate_link_quality(struct b43_wldev *dev)
1162 {
1163 /* Top half of Link Quality calculation. */
1164
1165 if (dev->phy.type != B43_PHYTYPE_G)
1166 return;
1167 if (dev->noisecalc.calculation_running)
1168 return;
1169 dev->noisecalc.calculation_running = 1;
1170 dev->noisecalc.nr_samples = 0;
1171
1172 b43_generate_noise_sample(dev);
1173 }
1174
1175 static void handle_irq_noise(struct b43_wldev *dev)
1176 {
1177 struct b43_phy_g *phy = dev->phy.g;
1178 u16 tmp;
1179 u8 noise[4];
1180 u8 i, j;
1181 s32 average;
1182
1183 /* Bottom half of Link Quality calculation. */
1184
1185 if (dev->phy.type != B43_PHYTYPE_G)
1186 return;
1187
1188 /* Possible race condition: It might be possible that the user
1189 * changed to a different channel in the meantime since we
1190 * started the calculation. We ignore that fact, since it's
1191 * not really that much of a problem. The background noise is
1192 * an estimation only anyway. Slightly wrong results will get damped
1193 * by the averaging of the 8 sample rounds. Additionally the
1194 * value is shortlived. So it will be replaced by the next noise
1195 * calculation round soon. */
1196
1197 B43_WARN_ON(!dev->noisecalc.calculation_running);
1198 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1199 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1200 noise[2] == 0x7F || noise[3] == 0x7F)
1201 goto generate_new;
1202
1203 /* Get the noise samples. */
1204 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1205 i = dev->noisecalc.nr_samples;
1206 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1207 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1208 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1209 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1210 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1211 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1212 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1213 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1214 dev->noisecalc.nr_samples++;
1215 if (dev->noisecalc.nr_samples == 8) {
1216 /* Calculate the Link Quality by the noise samples. */
1217 average = 0;
1218 for (i = 0; i < 8; i++) {
1219 for (j = 0; j < 4; j++)
1220 average += dev->noisecalc.samples[i][j];
1221 }
1222 average /= (8 * 4);
1223 average *= 125;
1224 average += 64;
1225 average /= 128;
1226 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1227 tmp = (tmp / 128) & 0x1F;
1228 if (tmp >= 8)
1229 average += 2;
1230 else
1231 average -= 25;
1232 if (tmp == 8)
1233 average -= 72;
1234 else
1235 average -= 48;
1236
1237 dev->stats.link_noise = average;
1238 dev->noisecalc.calculation_running = 0;
1239 return;
1240 }
1241 generate_new:
1242 b43_generate_noise_sample(dev);
1243 }
1244
1245 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1246 {
1247 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1248 ///TODO: PS TBTT
1249 } else {
1250 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1251 b43_power_saving_ctl_bits(dev, 0);
1252 }
1253 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1254 dev->dfq_valid = 1;
1255 }
1256
1257 static void handle_irq_atim_end(struct b43_wldev *dev)
1258 {
1259 if (dev->dfq_valid) {
1260 b43_write32(dev, B43_MMIO_MACCMD,
1261 b43_read32(dev, B43_MMIO_MACCMD)
1262 | B43_MACCMD_DFQ_VALID);
1263 dev->dfq_valid = 0;
1264 }
1265 }
1266
1267 static void handle_irq_pmq(struct b43_wldev *dev)
1268 {
1269 u32 tmp;
1270
1271 //TODO: AP mode.
1272
1273 while (1) {
1274 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1275 if (!(tmp & 0x00000008))
1276 break;
1277 }
1278 /* 16bit write is odd, but correct. */
1279 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1280 }
1281
1282 static void b43_write_template_common(struct b43_wldev *dev,
1283 const u8 * data, u16 size,
1284 u16 ram_offset,
1285 u16 shm_size_offset, u8 rate)
1286 {
1287 u32 i, tmp;
1288 struct b43_plcp_hdr4 plcp;
1289
1290 plcp.data = 0;
1291 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1292 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1293 ram_offset += sizeof(u32);
1294 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1295 * So leave the first two bytes of the next write blank.
1296 */
1297 tmp = (u32) (data[0]) << 16;
1298 tmp |= (u32) (data[1]) << 24;
1299 b43_ram_write(dev, ram_offset, tmp);
1300 ram_offset += sizeof(u32);
1301 for (i = 2; i < size; i += sizeof(u32)) {
1302 tmp = (u32) (data[i + 0]);
1303 if (i + 1 < size)
1304 tmp |= (u32) (data[i + 1]) << 8;
1305 if (i + 2 < size)
1306 tmp |= (u32) (data[i + 2]) << 16;
1307 if (i + 3 < size)
1308 tmp |= (u32) (data[i + 3]) << 24;
1309 b43_ram_write(dev, ram_offset + i - 2, tmp);
1310 }
1311 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1312 size + sizeof(struct b43_plcp_hdr6));
1313 }
1314
1315 /* Check if the use of the antenna that ieee80211 told us to
1316 * use is possible. This will fall back to DEFAULT.
1317 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1318 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1319 u8 antenna_nr)
1320 {
1321 u8 antenna_mask;
1322
1323 if (antenna_nr == 0) {
1324 /* Zero means "use default antenna". That's always OK. */
1325 return 0;
1326 }
1327
1328 /* Get the mask of available antennas. */
1329 if (dev->phy.gmode)
1330 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1331 else
1332 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1333
1334 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1335 /* This antenna is not available. Fall back to default. */
1336 return 0;
1337 }
1338
1339 return antenna_nr;
1340 }
1341
1342 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
1343 {
1344 antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
1345 switch (antenna) {
1346 case 0: /* default/diversity */
1347 return B43_ANTENNA_DEFAULT;
1348 case 1: /* Antenna 0 */
1349 return B43_ANTENNA0;
1350 case 2: /* Antenna 1 */
1351 return B43_ANTENNA1;
1352 case 3: /* Antenna 2 */
1353 return B43_ANTENNA2;
1354 case 4: /* Antenna 3 */
1355 return B43_ANTENNA3;
1356 default:
1357 return B43_ANTENNA_DEFAULT;
1358 }
1359 }
1360
1361 /* Convert a b43 antenna number value to the PHY TX control value. */
1362 static u16 b43_antenna_to_phyctl(int antenna)
1363 {
1364 switch (antenna) {
1365 case B43_ANTENNA0:
1366 return B43_TXH_PHY_ANT0;
1367 case B43_ANTENNA1:
1368 return B43_TXH_PHY_ANT1;
1369 case B43_ANTENNA2:
1370 return B43_TXH_PHY_ANT2;
1371 case B43_ANTENNA3:
1372 return B43_TXH_PHY_ANT3;
1373 case B43_ANTENNA_AUTO:
1374 return B43_TXH_PHY_ANT01AUTO;
1375 }
1376 B43_WARN_ON(1);
1377 return 0;
1378 }
1379
1380 static void b43_write_beacon_template(struct b43_wldev *dev,
1381 u16 ram_offset,
1382 u16 shm_size_offset)
1383 {
1384 unsigned int i, len, variable_len;
1385 const struct ieee80211_mgmt *bcn;
1386 const u8 *ie;
1387 bool tim_found = 0;
1388 unsigned int rate;
1389 u16 ctl;
1390 int antenna;
1391 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1392
1393 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1394 len = min((size_t) dev->wl->current_beacon->len,
1395 0x200 - sizeof(struct b43_plcp_hdr6));
1396 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1397
1398 b43_write_template_common(dev, (const u8 *)bcn,
1399 len, ram_offset, shm_size_offset, rate);
1400
1401 /* Write the PHY TX control parameters. */
1402 antenna = b43_antenna_from_ieee80211(dev, info->antenna_sel_tx);
1403 antenna = b43_antenna_to_phyctl(antenna);
1404 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1405 /* We can't send beacons with short preamble. Would get PHY errors. */
1406 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1407 ctl &= ~B43_TXH_PHY_ANT;
1408 ctl &= ~B43_TXH_PHY_ENC;
1409 ctl |= antenna;
1410 if (b43_is_cck_rate(rate))
1411 ctl |= B43_TXH_PHY_ENC_CCK;
1412 else
1413 ctl |= B43_TXH_PHY_ENC_OFDM;
1414 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1415
1416 /* Find the position of the TIM and the DTIM_period value
1417 * and write them to SHM. */
1418 ie = bcn->u.beacon.variable;
1419 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1420 for (i = 0; i < variable_len - 2; ) {
1421 uint8_t ie_id, ie_len;
1422
1423 ie_id = ie[i];
1424 ie_len = ie[i + 1];
1425 if (ie_id == 5) {
1426 u16 tim_position;
1427 u16 dtim_period;
1428 /* This is the TIM Information Element */
1429
1430 /* Check whether the ie_len is in the beacon data range. */
1431 if (variable_len < ie_len + 2 + i)
1432 break;
1433 /* A valid TIM is at least 4 bytes long. */
1434 if (ie_len < 4)
1435 break;
1436 tim_found = 1;
1437
1438 tim_position = sizeof(struct b43_plcp_hdr6);
1439 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1440 tim_position += i;
1441
1442 dtim_period = ie[i + 3];
1443
1444 b43_shm_write16(dev, B43_SHM_SHARED,
1445 B43_SHM_SH_TIMBPOS, tim_position);
1446 b43_shm_write16(dev, B43_SHM_SHARED,
1447 B43_SHM_SH_DTIMPER, dtim_period);
1448 break;
1449 }
1450 i += ie_len + 2;
1451 }
1452 if (!tim_found) {
1453 /*
1454 * If ucode wants to modify TIM do it behind the beacon, this
1455 * will happen, for example, when doing mesh networking.
1456 */
1457 b43_shm_write16(dev, B43_SHM_SHARED,
1458 B43_SHM_SH_TIMBPOS,
1459 len + sizeof(struct b43_plcp_hdr6));
1460 b43_shm_write16(dev, B43_SHM_SHARED,
1461 B43_SHM_SH_DTIMPER, 0);
1462 }
1463 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1464 }
1465
1466 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1467 u16 shm_offset, u16 size,
1468 struct ieee80211_rate *rate)
1469 {
1470 struct b43_plcp_hdr4 plcp;
1471 u32 tmp;
1472 __le16 dur;
1473
1474 plcp.data = 0;
1475 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1476 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1477 dev->wl->vif, size,
1478 rate);
1479 /* Write PLCP in two parts and timing for packet transfer */
1480 tmp = le32_to_cpu(plcp.data);
1481 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1482 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1483 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1484 }
1485
1486 /* Instead of using custom probe response template, this function
1487 * just patches custom beacon template by:
1488 * 1) Changing packet type
1489 * 2) Patching duration field
1490 * 3) Stripping TIM
1491 */
1492 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1493 u16 *dest_size,
1494 struct ieee80211_rate *rate)
1495 {
1496 const u8 *src_data;
1497 u8 *dest_data;
1498 u16 src_size, elem_size, src_pos, dest_pos;
1499 __le16 dur;
1500 struct ieee80211_hdr *hdr;
1501 size_t ie_start;
1502
1503 src_size = dev->wl->current_beacon->len;
1504 src_data = (const u8 *)dev->wl->current_beacon->data;
1505
1506 /* Get the start offset of the variable IEs in the packet. */
1507 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1508 B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1509
1510 if (B43_WARN_ON(src_size < ie_start))
1511 return NULL;
1512
1513 dest_data = kmalloc(src_size, GFP_ATOMIC);
1514 if (unlikely(!dest_data))
1515 return NULL;
1516
1517 /* Copy the static data and all Information Elements, except the TIM. */
1518 memcpy(dest_data, src_data, ie_start);
1519 src_pos = ie_start;
1520 dest_pos = ie_start;
1521 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1522 elem_size = src_data[src_pos + 1] + 2;
1523 if (src_data[src_pos] == 5) {
1524 /* This is the TIM. */
1525 continue;
1526 }
1527 memcpy(dest_data + dest_pos, src_data + src_pos,
1528 elem_size);
1529 dest_pos += elem_size;
1530 }
1531 *dest_size = dest_pos;
1532 hdr = (struct ieee80211_hdr *)dest_data;
1533
1534 /* Set the frame control. */
1535 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1536 IEEE80211_STYPE_PROBE_RESP);
1537 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1538 dev->wl->vif, *dest_size,
1539 rate);
1540 hdr->duration_id = dur;
1541
1542 return dest_data;
1543 }
1544
1545 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1546 u16 ram_offset,
1547 u16 shm_size_offset,
1548 struct ieee80211_rate *rate)
1549 {
1550 const u8 *probe_resp_data;
1551 u16 size;
1552
1553 size = dev->wl->current_beacon->len;
1554 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1555 if (unlikely(!probe_resp_data))
1556 return;
1557
1558 /* Looks like PLCP headers plus packet timings are stored for
1559 * all possible basic rates
1560 */
1561 b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1562 b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1563 b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1564 b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1565
1566 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1567 b43_write_template_common(dev, probe_resp_data,
1568 size, ram_offset, shm_size_offset,
1569 rate->hw_value);
1570 kfree(probe_resp_data);
1571 }
1572
1573 static void b43_upload_beacon0(struct b43_wldev *dev)
1574 {
1575 struct b43_wl *wl = dev->wl;
1576
1577 if (wl->beacon0_uploaded)
1578 return;
1579 b43_write_beacon_template(dev, 0x68, 0x18);
1580 /* FIXME: Probe resp upload doesn't really belong here,
1581 * but we don't use that feature anyway. */
1582 b43_write_probe_resp_template(dev, 0x268, 0x4A,
1583 &__b43_ratetable[3]);
1584 wl->beacon0_uploaded = 1;
1585 }
1586
1587 static void b43_upload_beacon1(struct b43_wldev *dev)
1588 {
1589 struct b43_wl *wl = dev->wl;
1590
1591 if (wl->beacon1_uploaded)
1592 return;
1593 b43_write_beacon_template(dev, 0x468, 0x1A);
1594 wl->beacon1_uploaded = 1;
1595 }
1596
1597 static void handle_irq_beacon(struct b43_wldev *dev)
1598 {
1599 struct b43_wl *wl = dev->wl;
1600 u32 cmd, beacon0_valid, beacon1_valid;
1601
1602 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1603 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1604 return;
1605
1606 /* This is the bottom half of the asynchronous beacon update. */
1607
1608 /* Ignore interrupt in the future. */
1609 dev->irq_savedstate &= ~B43_IRQ_BEACON;
1610
1611 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1612 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1613 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1614
1615 /* Schedule interrupt manually, if busy. */
1616 if (beacon0_valid && beacon1_valid) {
1617 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1618 dev->irq_savedstate |= B43_IRQ_BEACON;
1619 return;
1620 }
1621
1622 if (unlikely(wl->beacon_templates_virgin)) {
1623 /* We never uploaded a beacon before.
1624 * Upload both templates now, but only mark one valid. */
1625 wl->beacon_templates_virgin = 0;
1626 b43_upload_beacon0(dev);
1627 b43_upload_beacon1(dev);
1628 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1629 cmd |= B43_MACCMD_BEACON0_VALID;
1630 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1631 } else {
1632 if (!beacon0_valid) {
1633 b43_upload_beacon0(dev);
1634 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1635 cmd |= B43_MACCMD_BEACON0_VALID;
1636 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1637 } else if (!beacon1_valid) {
1638 b43_upload_beacon1(dev);
1639 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1640 cmd |= B43_MACCMD_BEACON1_VALID;
1641 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1642 }
1643 }
1644 }
1645
1646 static void b43_beacon_update_trigger_work(struct work_struct *work)
1647 {
1648 struct b43_wl *wl = container_of(work, struct b43_wl,
1649 beacon_update_trigger);
1650 struct b43_wldev *dev;
1651
1652 mutex_lock(&wl->mutex);
1653 dev = wl->current_dev;
1654 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1655 spin_lock_irq(&wl->irq_lock);
1656 /* update beacon right away or defer to irq */
1657 dev->irq_savedstate = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1658 handle_irq_beacon(dev);
1659 /* The handler might have updated the IRQ mask. */
1660 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK,
1661 dev->irq_savedstate);
1662 mmiowb();
1663 spin_unlock_irq(&wl->irq_lock);
1664 }
1665 mutex_unlock(&wl->mutex);
1666 }
1667
1668 /* Asynchronously update the packet templates in template RAM.
1669 * Locking: Requires wl->irq_lock to be locked. */
1670 static void b43_update_templates(struct b43_wl *wl)
1671 {
1672 struct sk_buff *beacon;
1673
1674 /* This is the top half of the ansynchronous beacon update.
1675 * The bottom half is the beacon IRQ.
1676 * Beacon update must be asynchronous to avoid sending an
1677 * invalid beacon. This can happen for example, if the firmware
1678 * transmits a beacon while we are updating it. */
1679
1680 /* We could modify the existing beacon and set the aid bit in
1681 * the TIM field, but that would probably require resizing and
1682 * moving of data within the beacon template.
1683 * Simply request a new beacon and let mac80211 do the hard work. */
1684 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1685 if (unlikely(!beacon))
1686 return;
1687
1688 if (wl->current_beacon)
1689 dev_kfree_skb_any(wl->current_beacon);
1690 wl->current_beacon = beacon;
1691 wl->beacon0_uploaded = 0;
1692 wl->beacon1_uploaded = 0;
1693 queue_work(wl->hw->workqueue, &wl->beacon_update_trigger);
1694 }
1695
1696 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1697 {
1698 u32 tmp;
1699 u16 i, len;
1700
1701 len = min((u16) ssid_len, (u16) 0x100);
1702 for (i = 0; i < len; i += sizeof(u32)) {
1703 tmp = (u32) (ssid[i + 0]);
1704 if (i + 1 < len)
1705 tmp |= (u32) (ssid[i + 1]) << 8;
1706 if (i + 2 < len)
1707 tmp |= (u32) (ssid[i + 2]) << 16;
1708 if (i + 3 < len)
1709 tmp |= (u32) (ssid[i + 3]) << 24;
1710 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1711 }
1712 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1713 }
1714
1715 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1716 {
1717 b43_time_lock(dev);
1718 if (dev->dev->id.revision >= 3) {
1719 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1720 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1721 } else {
1722 b43_write16(dev, 0x606, (beacon_int >> 6));
1723 b43_write16(dev, 0x610, beacon_int);
1724 }
1725 b43_time_unlock(dev);
1726 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1727 }
1728
1729 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1730 {
1731 u16 reason;
1732
1733 /* Read the register that contains the reason code for the panic. */
1734 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1735 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1736
1737 switch (reason) {
1738 default:
1739 b43dbg(dev->wl, "The panic reason is unknown.\n");
1740 /* fallthrough */
1741 case B43_FWPANIC_DIE:
1742 /* Do not restart the controller or firmware.
1743 * The device is nonfunctional from now on.
1744 * Restarting would result in this panic to trigger again,
1745 * so we avoid that recursion. */
1746 break;
1747 case B43_FWPANIC_RESTART:
1748 b43_controller_restart(dev, "Microcode panic");
1749 break;
1750 }
1751 }
1752
1753 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1754 {
1755 unsigned int i, cnt;
1756 u16 reason, marker_id, marker_line;
1757 __le16 *buf;
1758
1759 /* The proprietary firmware doesn't have this IRQ. */
1760 if (!dev->fw.opensource)
1761 return;
1762
1763 /* Read the register that contains the reason code for this IRQ. */
1764 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1765
1766 switch (reason) {
1767 case B43_DEBUGIRQ_PANIC:
1768 b43_handle_firmware_panic(dev);
1769 break;
1770 case B43_DEBUGIRQ_DUMP_SHM:
1771 if (!B43_DEBUG)
1772 break; /* Only with driver debugging enabled. */
1773 buf = kmalloc(4096, GFP_ATOMIC);
1774 if (!buf) {
1775 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1776 goto out;
1777 }
1778 for (i = 0; i < 4096; i += 2) {
1779 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1780 buf[i / 2] = cpu_to_le16(tmp);
1781 }
1782 b43info(dev->wl, "Shared memory dump:\n");
1783 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1784 16, 2, buf, 4096, 1);
1785 kfree(buf);
1786 break;
1787 case B43_DEBUGIRQ_DUMP_REGS:
1788 if (!B43_DEBUG)
1789 break; /* Only with driver debugging enabled. */
1790 b43info(dev->wl, "Microcode register dump:\n");
1791 for (i = 0, cnt = 0; i < 64; i++) {
1792 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1793 if (cnt == 0)
1794 printk(KERN_INFO);
1795 printk("r%02u: 0x%04X ", i, tmp);
1796 cnt++;
1797 if (cnt == 6) {
1798 printk("\n");
1799 cnt = 0;
1800 }
1801 }
1802 printk("\n");
1803 break;
1804 case B43_DEBUGIRQ_MARKER:
1805 if (!B43_DEBUG)
1806 break; /* Only with driver debugging enabled. */
1807 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1808 B43_MARKER_ID_REG);
1809 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1810 B43_MARKER_LINE_REG);
1811 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1812 "at line number %u\n",
1813 marker_id, marker_line);
1814 break;
1815 default:
1816 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1817 reason);
1818 }
1819 out:
1820 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1821 b43_shm_write16(dev, B43_SHM_SCRATCH,
1822 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1823 }
1824
1825 /* Interrupt handler bottom-half */
1826 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1827 {
1828 u32 reason;
1829 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1830 u32 merged_dma_reason = 0;
1831 int i;
1832 unsigned long flags;
1833
1834 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1835
1836 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1837
1838 reason = dev->irq_reason;
1839 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1840 dma_reason[i] = dev->dma_reason[i];
1841 merged_dma_reason |= dma_reason[i];
1842 }
1843
1844 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1845 b43err(dev->wl, "MAC transmission error\n");
1846
1847 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1848 b43err(dev->wl, "PHY transmission error\n");
1849 rmb();
1850 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1851 atomic_set(&dev->phy.txerr_cnt,
1852 B43_PHY_TX_BADNESS_LIMIT);
1853 b43err(dev->wl, "Too many PHY TX errors, "
1854 "restarting the controller\n");
1855 b43_controller_restart(dev, "PHY TX errors");
1856 }
1857 }
1858
1859 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1860 B43_DMAIRQ_NONFATALMASK))) {
1861 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1862 b43err(dev->wl, "Fatal DMA error: "
1863 "0x%08X, 0x%08X, 0x%08X, "
1864 "0x%08X, 0x%08X, 0x%08X\n",
1865 dma_reason[0], dma_reason[1],
1866 dma_reason[2], dma_reason[3],
1867 dma_reason[4], dma_reason[5]);
1868 b43_controller_restart(dev, "DMA error");
1869 mmiowb();
1870 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1871 return;
1872 }
1873 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1874 b43err(dev->wl, "DMA error: "
1875 "0x%08X, 0x%08X, 0x%08X, "
1876 "0x%08X, 0x%08X, 0x%08X\n",
1877 dma_reason[0], dma_reason[1],
1878 dma_reason[2], dma_reason[3],
1879 dma_reason[4], dma_reason[5]);
1880 }
1881 }
1882
1883 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1884 handle_irq_ucode_debug(dev);
1885 if (reason & B43_IRQ_TBTT_INDI)
1886 handle_irq_tbtt_indication(dev);
1887 if (reason & B43_IRQ_ATIM_END)
1888 handle_irq_atim_end(dev);
1889 if (reason & B43_IRQ_BEACON)
1890 handle_irq_beacon(dev);
1891 if (reason & B43_IRQ_PMQ)
1892 handle_irq_pmq(dev);
1893 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1894 ;/* TODO */
1895 if (reason & B43_IRQ_NOISESAMPLE_OK)
1896 handle_irq_noise(dev);
1897
1898 /* Check the DMA reason registers for received data. */
1899 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1900 if (b43_using_pio_transfers(dev))
1901 b43_pio_rx(dev->pio.rx_queue);
1902 else
1903 b43_dma_rx(dev->dma.rx_ring);
1904 }
1905 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1906 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1907 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1908 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1909 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1910
1911 if (reason & B43_IRQ_TX_OK)
1912 handle_irq_transmit_status(dev);
1913
1914 b43_interrupt_enable(dev, dev->irq_savedstate);
1915 mmiowb();
1916 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1917 }
1918
1919 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1920 {
1921 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1922
1923 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1924 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1925 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1926 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1927 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1928 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1929 }
1930
1931 /* Interrupt handler top-half */
1932 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1933 {
1934 irqreturn_t ret = IRQ_NONE;
1935 struct b43_wldev *dev = dev_id;
1936 u32 reason;
1937
1938 if (!dev)
1939 return IRQ_NONE;
1940
1941 spin_lock(&dev->wl->irq_lock);
1942
1943 if (b43_status(dev) < B43_STAT_STARTED)
1944 goto out;
1945 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1946 if (reason == 0xffffffff) /* shared IRQ */
1947 goto out;
1948 ret = IRQ_HANDLED;
1949 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1950 if (!reason)
1951 goto out;
1952
1953 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1954 & 0x0001DC00;
1955 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1956 & 0x0000DC00;
1957 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1958 & 0x0000DC00;
1959 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1960 & 0x0001DC00;
1961 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1962 & 0x0000DC00;
1963 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1964 & 0x0000DC00;
1965
1966 b43_interrupt_ack(dev, reason);
1967 /* disable all IRQs. They are enabled again in the bottom half. */
1968 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1969 /* save the reason code and call our bottom half. */
1970 dev->irq_reason = reason;
1971 tasklet_schedule(&dev->isr_tasklet);
1972 out:
1973 mmiowb();
1974 spin_unlock(&dev->wl->irq_lock);
1975
1976 return ret;
1977 }
1978
1979 static void do_release_fw(struct b43_firmware_file *fw)
1980 {
1981 release_firmware(fw->data);
1982 fw->data = NULL;
1983 fw->filename = NULL;
1984 }
1985
1986 static void b43_release_firmware(struct b43_wldev *dev)
1987 {
1988 do_release_fw(&dev->fw.ucode);
1989 do_release_fw(&dev->fw.pcm);
1990 do_release_fw(&dev->fw.initvals);
1991 do_release_fw(&dev->fw.initvals_band);
1992 }
1993
1994 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1995 {
1996 const char *text;
1997
1998 text = "You must go to "
1999 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
2000 "and download the latest firmware (version 4).\n";
2001 if (error)
2002 b43err(wl, text);
2003 else
2004 b43warn(wl, text);
2005 }
2006
2007 static int do_request_fw(struct b43_wldev *dev,
2008 const char *name,
2009 struct b43_firmware_file *fw,
2010 bool silent)
2011 {
2012 char path[sizeof(modparam_fwpostfix) + 32];
2013 const struct firmware *blob;
2014 struct b43_fw_header *hdr;
2015 u32 size;
2016 int err;
2017
2018 if (!name) {
2019 /* Don't fetch anything. Free possibly cached firmware. */
2020 do_release_fw(fw);
2021 return 0;
2022 }
2023 if (fw->filename) {
2024 if (strcmp(fw->filename, name) == 0)
2025 return 0; /* Already have this fw. */
2026 /* Free the cached firmware first. */
2027 do_release_fw(fw);
2028 }
2029
2030 snprintf(path, ARRAY_SIZE(path),
2031 "b43%s/%s.fw",
2032 modparam_fwpostfix, name);
2033 err = request_firmware(&blob, path, dev->dev->dev);
2034 if (err == -ENOENT) {
2035 if (!silent) {
2036 b43err(dev->wl, "Firmware file \"%s\" not found\n",
2037 path);
2038 }
2039 return err;
2040 } else if (err) {
2041 b43err(dev->wl, "Firmware file \"%s\" request failed (err=%d)\n",
2042 path, err);
2043 return err;
2044 }
2045 if (blob->size < sizeof(struct b43_fw_header))
2046 goto err_format;
2047 hdr = (struct b43_fw_header *)(blob->data);
2048 switch (hdr->type) {
2049 case B43_FW_TYPE_UCODE:
2050 case B43_FW_TYPE_PCM:
2051 size = be32_to_cpu(hdr->size);
2052 if (size != blob->size - sizeof(struct b43_fw_header))
2053 goto err_format;
2054 /* fallthrough */
2055 case B43_FW_TYPE_IV:
2056 if (hdr->ver != 1)
2057 goto err_format;
2058 break;
2059 default:
2060 goto err_format;
2061 }
2062
2063 fw->data = blob;
2064 fw->filename = name;
2065
2066 return 0;
2067
2068 err_format:
2069 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
2070 release_firmware(blob);
2071
2072 return -EPROTO;
2073 }
2074
2075 static int b43_request_firmware(struct b43_wldev *dev)
2076 {
2077 struct b43_firmware *fw = &dev->fw;
2078 const u8 rev = dev->dev->id.revision;
2079 const char *filename;
2080 u32 tmshigh;
2081 int err;
2082
2083 /* Get microcode */
2084 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2085 if ((rev >= 5) && (rev <= 10))
2086 filename = "ucode5";
2087 else if ((rev >= 11) && (rev <= 12))
2088 filename = "ucode11";
2089 else if (rev >= 13)
2090 filename = "ucode13";
2091 else
2092 goto err_no_ucode;
2093 err = do_request_fw(dev, filename, &fw->ucode, 0);
2094 if (err)
2095 goto err_load;
2096
2097 /* Get PCM code */
2098 if ((rev >= 5) && (rev <= 10))
2099 filename = "pcm5";
2100 else if (rev >= 11)
2101 filename = NULL;
2102 else
2103 goto err_no_pcm;
2104 fw->pcm_request_failed = 0;
2105 err = do_request_fw(dev, filename, &fw->pcm, 1);
2106 if (err == -ENOENT) {
2107 /* We did not find a PCM file? Not fatal, but
2108 * core rev <= 10 must do without hwcrypto then. */
2109 fw->pcm_request_failed = 1;
2110 } else if (err)
2111 goto err_load;
2112
2113 /* Get initvals */
2114 switch (dev->phy.type) {
2115 case B43_PHYTYPE_A:
2116 if ((rev >= 5) && (rev <= 10)) {
2117 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2118 filename = "a0g1initvals5";
2119 else
2120 filename = "a0g0initvals5";
2121 } else
2122 goto err_no_initvals;
2123 break;
2124 case B43_PHYTYPE_G:
2125 if ((rev >= 5) && (rev <= 10))
2126 filename = "b0g0initvals5";
2127 else if (rev >= 13)
2128 filename = "b0g0initvals13";
2129 else
2130 goto err_no_initvals;
2131 break;
2132 case B43_PHYTYPE_N:
2133 if ((rev >= 11) && (rev <= 12))
2134 filename = "n0initvals11";
2135 else
2136 goto err_no_initvals;
2137 break;
2138 default:
2139 goto err_no_initvals;
2140 }
2141 err = do_request_fw(dev, filename, &fw->initvals, 0);
2142 if (err)
2143 goto err_load;
2144
2145 /* Get bandswitch initvals */
2146 switch (dev->phy.type) {
2147 case B43_PHYTYPE_A:
2148 if ((rev >= 5) && (rev <= 10)) {
2149 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2150 filename = "a0g1bsinitvals5";
2151 else
2152 filename = "a0g0bsinitvals5";
2153 } else if (rev >= 11)
2154 filename = NULL;
2155 else
2156 goto err_no_initvals;
2157 break;
2158 case B43_PHYTYPE_G:
2159 if ((rev >= 5) && (rev <= 10))
2160 filename = "b0g0bsinitvals5";
2161 else if (rev >= 11)
2162 filename = NULL;
2163 else
2164 goto err_no_initvals;
2165 break;
2166 case B43_PHYTYPE_N:
2167 if ((rev >= 11) && (rev <= 12))
2168 filename = "n0bsinitvals11";
2169 else
2170 goto err_no_initvals;
2171 break;
2172 default:
2173 goto err_no_initvals;
2174 }
2175 err = do_request_fw(dev, filename, &fw->initvals_band, 0);
2176 if (err)
2177 goto err_load;
2178
2179 return 0;
2180
2181 err_load:
2182 b43_print_fw_helptext(dev->wl, 1);
2183 goto error;
2184
2185 err_no_ucode:
2186 err = -ENODEV;
2187 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
2188 goto error;
2189
2190 err_no_pcm:
2191 err = -ENODEV;
2192 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
2193 goto error;
2194
2195 err_no_initvals:
2196 err = -ENODEV;
2197 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
2198 "core rev %u\n", dev->phy.type, rev);
2199 goto error;
2200
2201 error:
2202 b43_release_firmware(dev);
2203 return err;
2204 }
2205
2206 static int b43_upload_microcode(struct b43_wldev *dev)
2207 {
2208 const size_t hdr_len = sizeof(struct b43_fw_header);
2209 const __be32 *data;
2210 unsigned int i, len;
2211 u16 fwrev, fwpatch, fwdate, fwtime;
2212 u32 tmp, macctl;
2213 int err = 0;
2214
2215 /* Jump the microcode PSM to offset 0 */
2216 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2217 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2218 macctl |= B43_MACCTL_PSM_JMP0;
2219 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2220 /* Zero out all microcode PSM registers and shared memory. */
2221 for (i = 0; i < 64; i++)
2222 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2223 for (i = 0; i < 4096; i += 2)
2224 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2225
2226 /* Upload Microcode. */
2227 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2228 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2229 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2230 for (i = 0; i < len; i++) {
2231 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2232 udelay(10);
2233 }
2234
2235 if (dev->fw.pcm.data) {
2236 /* Upload PCM data. */
2237 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2238 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2239 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2240 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2241 /* No need for autoinc bit in SHM_HW */
2242 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2243 for (i = 0; i < len; i++) {
2244 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2245 udelay(10);
2246 }
2247 }
2248
2249 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2250
2251 /* Start the microcode PSM */
2252 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2253 macctl &= ~B43_MACCTL_PSM_JMP0;
2254 macctl |= B43_MACCTL_PSM_RUN;
2255 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2256
2257 /* Wait for the microcode to load and respond */
2258 i = 0;
2259 while (1) {
2260 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2261 if (tmp == B43_IRQ_MAC_SUSPENDED)
2262 break;
2263 i++;
2264 if (i >= 20) {
2265 b43err(dev->wl, "Microcode not responding\n");
2266 b43_print_fw_helptext(dev->wl, 1);
2267 err = -ENODEV;
2268 goto error;
2269 }
2270 msleep_interruptible(50);
2271 if (signal_pending(current)) {
2272 err = -EINTR;
2273 goto error;
2274 }
2275 }
2276 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2277
2278 /* Get and check the revisions. */
2279 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2280 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2281 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2282 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2283
2284 if (fwrev <= 0x128) {
2285 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2286 "binary drivers older than version 4.x is unsupported. "
2287 "You must upgrade your firmware files.\n");
2288 b43_print_fw_helptext(dev->wl, 1);
2289 err = -EOPNOTSUPP;
2290 goto error;
2291 }
2292 dev->fw.rev = fwrev;
2293 dev->fw.patch = fwpatch;
2294 dev->fw.opensource = (fwdate == 0xFFFF);
2295
2296 if (dev->fw.opensource) {
2297 /* Patchlevel info is encoded in the "time" field. */
2298 dev->fw.patch = fwtime;
2299 b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n",
2300 dev->fw.rev, dev->fw.patch,
2301 dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : "");
2302 } else {
2303 b43info(dev->wl, "Loading firmware version %u.%u "
2304 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2305 fwrev, fwpatch,
2306 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2307 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2308 if (dev->fw.pcm_request_failed) {
2309 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2310 "Hardware accelerated cryptography is disabled.\n");
2311 b43_print_fw_helptext(dev->wl, 0);
2312 }
2313 }
2314
2315 if (b43_is_old_txhdr_format(dev)) {
2316 b43warn(dev->wl, "You are using an old firmware image. "
2317 "Support for old firmware will be removed in July 2008.\n");
2318 b43_print_fw_helptext(dev->wl, 0);
2319 }
2320
2321 return 0;
2322
2323 error:
2324 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2325 macctl &= ~B43_MACCTL_PSM_RUN;
2326 macctl |= B43_MACCTL_PSM_JMP0;
2327 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2328
2329 return err;
2330 }
2331
2332 static int b43_write_initvals(struct b43_wldev *dev,
2333 const struct b43_iv *ivals,
2334 size_t count,
2335 size_t array_size)
2336 {
2337 const struct b43_iv *iv;
2338 u16 offset;
2339 size_t i;
2340 bool bit32;
2341
2342 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2343 iv = ivals;
2344 for (i = 0; i < count; i++) {
2345 if (array_size < sizeof(iv->offset_size))
2346 goto err_format;
2347 array_size -= sizeof(iv->offset_size);
2348 offset = be16_to_cpu(iv->offset_size);
2349 bit32 = !!(offset & B43_IV_32BIT);
2350 offset &= B43_IV_OFFSET_MASK;
2351 if (offset >= 0x1000)
2352 goto err_format;
2353 if (bit32) {
2354 u32 value;
2355
2356 if (array_size < sizeof(iv->data.d32))
2357 goto err_format;
2358 array_size -= sizeof(iv->data.d32);
2359
2360 value = get_unaligned_be32(&iv->data.d32);
2361 b43_write32(dev, offset, value);
2362
2363 iv = (const struct b43_iv *)((const uint8_t *)iv +
2364 sizeof(__be16) +
2365 sizeof(__be32));
2366 } else {
2367 u16 value;
2368
2369 if (array_size < sizeof(iv->data.d16))
2370 goto err_format;
2371 array_size -= sizeof(iv->data.d16);
2372
2373 value = be16_to_cpu(iv->data.d16);
2374 b43_write16(dev, offset, value);
2375
2376 iv = (const struct b43_iv *)((const uint8_t *)iv +
2377 sizeof(__be16) +
2378 sizeof(__be16));
2379 }
2380 }
2381 if (array_size)
2382 goto err_format;
2383
2384 return 0;
2385
2386 err_format:
2387 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2388 b43_print_fw_helptext(dev->wl, 1);
2389
2390 return -EPROTO;
2391 }
2392
2393 static int b43_upload_initvals(struct b43_wldev *dev)
2394 {
2395 const size_t hdr_len = sizeof(struct b43_fw_header);
2396 const struct b43_fw_header *hdr;
2397 struct b43_firmware *fw = &dev->fw;
2398 const struct b43_iv *ivals;
2399 size_t count;
2400 int err;
2401
2402 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2403 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2404 count = be32_to_cpu(hdr->size);
2405 err = b43_write_initvals(dev, ivals, count,
2406 fw->initvals.data->size - hdr_len);
2407 if (err)
2408 goto out;
2409 if (fw->initvals_band.data) {
2410 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2411 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2412 count = be32_to_cpu(hdr->size);
2413 err = b43_write_initvals(dev, ivals, count,
2414 fw->initvals_band.data->size - hdr_len);
2415 if (err)
2416 goto out;
2417 }
2418 out:
2419
2420 return err;
2421 }
2422
2423 /* Initialize the GPIOs
2424 * http://bcm-specs.sipsolutions.net/GPIO
2425 */
2426 static int b43_gpio_init(struct b43_wldev *dev)
2427 {
2428 struct ssb_bus *bus = dev->dev->bus;
2429 struct ssb_device *gpiodev, *pcidev = NULL;
2430 u32 mask, set;
2431
2432 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2433 & ~B43_MACCTL_GPOUTSMSK);
2434
2435 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2436 | 0x000F);
2437
2438 mask = 0x0000001F;
2439 set = 0x0000000F;
2440 if (dev->dev->bus->chip_id == 0x4301) {
2441 mask |= 0x0060;
2442 set |= 0x0060;
2443 }
2444 if (0 /* FIXME: conditional unknown */ ) {
2445 b43_write16(dev, B43_MMIO_GPIO_MASK,
2446 b43_read16(dev, B43_MMIO_GPIO_MASK)
2447 | 0x0100);
2448 mask |= 0x0180;
2449 set |= 0x0180;
2450 }
2451 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2452 b43_write16(dev, B43_MMIO_GPIO_MASK,
2453 b43_read16(dev, B43_MMIO_GPIO_MASK)
2454 | 0x0200);
2455 mask |= 0x0200;
2456 set |= 0x0200;
2457 }
2458 if (dev->dev->id.revision >= 2)
2459 mask |= 0x0010; /* FIXME: This is redundant. */
2460
2461 #ifdef CONFIG_SSB_DRIVER_PCICORE
2462 pcidev = bus->pcicore.dev;
2463 #endif
2464 gpiodev = bus->chipco.dev ? : pcidev;
2465 if (!gpiodev)
2466 return 0;
2467 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2468 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2469 & mask) | set);
2470
2471 return 0;
2472 }
2473
2474 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2475 static void b43_gpio_cleanup(struct b43_wldev *dev)
2476 {
2477 struct ssb_bus *bus = dev->dev->bus;
2478 struct ssb_device *gpiodev, *pcidev = NULL;
2479
2480 #ifdef CONFIG_SSB_DRIVER_PCICORE
2481 pcidev = bus->pcicore.dev;
2482 #endif
2483 gpiodev = bus->chipco.dev ? : pcidev;
2484 if (!gpiodev)
2485 return;
2486 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2487 }
2488
2489 /* http://bcm-specs.sipsolutions.net/EnableMac */
2490 void b43_mac_enable(struct b43_wldev *dev)
2491 {
2492 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2493 u16 fwstate;
2494
2495 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2496 B43_SHM_SH_UCODESTAT);
2497 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2498 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2499 b43err(dev->wl, "b43_mac_enable(): The firmware "
2500 "should be suspended, but current state is %u\n",
2501 fwstate);
2502 }
2503 }
2504
2505 dev->mac_suspended--;
2506 B43_WARN_ON(dev->mac_suspended < 0);
2507 if (dev->mac_suspended == 0) {
2508 b43_write32(dev, B43_MMIO_MACCTL,
2509 b43_read32(dev, B43_MMIO_MACCTL)
2510 | B43_MACCTL_ENABLED);
2511 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2512 B43_IRQ_MAC_SUSPENDED);
2513 /* Commit writes */
2514 b43_read32(dev, B43_MMIO_MACCTL);
2515 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2516 b43_power_saving_ctl_bits(dev, 0);
2517 }
2518 }
2519
2520 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2521 void b43_mac_suspend(struct b43_wldev *dev)
2522 {
2523 int i;
2524 u32 tmp;
2525
2526 might_sleep();
2527 B43_WARN_ON(dev->mac_suspended < 0);
2528
2529 if (dev->mac_suspended == 0) {
2530 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2531 b43_write32(dev, B43_MMIO_MACCTL,
2532 b43_read32(dev, B43_MMIO_MACCTL)
2533 & ~B43_MACCTL_ENABLED);
2534 /* force pci to flush the write */
2535 b43_read32(dev, B43_MMIO_MACCTL);
2536 for (i = 35; i; i--) {
2537 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2538 if (tmp & B43_IRQ_MAC_SUSPENDED)
2539 goto out;
2540 udelay(10);
2541 }
2542 /* Hm, it seems this will take some time. Use msleep(). */
2543 for (i = 40; i; i--) {
2544 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2545 if (tmp & B43_IRQ_MAC_SUSPENDED)
2546 goto out;
2547 msleep(1);
2548 }
2549 b43err(dev->wl, "MAC suspend failed\n");
2550 }
2551 out:
2552 dev->mac_suspended++;
2553 }
2554
2555 static void b43_adjust_opmode(struct b43_wldev *dev)
2556 {
2557 struct b43_wl *wl = dev->wl;
2558 u32 ctl;
2559 u16 cfp_pretbtt;
2560
2561 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2562 /* Reset status to STA infrastructure mode. */
2563 ctl &= ~B43_MACCTL_AP;
2564 ctl &= ~B43_MACCTL_KEEP_CTL;
2565 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2566 ctl &= ~B43_MACCTL_KEEP_BAD;
2567 ctl &= ~B43_MACCTL_PROMISC;
2568 ctl &= ~B43_MACCTL_BEACPROMISC;
2569 ctl |= B43_MACCTL_INFRA;
2570
2571 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2572 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2573 ctl |= B43_MACCTL_AP;
2574 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2575 ctl &= ~B43_MACCTL_INFRA;
2576
2577 if (wl->filter_flags & FIF_CONTROL)
2578 ctl |= B43_MACCTL_KEEP_CTL;
2579 if (wl->filter_flags & FIF_FCSFAIL)
2580 ctl |= B43_MACCTL_KEEP_BAD;
2581 if (wl->filter_flags & FIF_PLCPFAIL)
2582 ctl |= B43_MACCTL_KEEP_BADPLCP;
2583 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2584 ctl |= B43_MACCTL_PROMISC;
2585 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2586 ctl |= B43_MACCTL_BEACPROMISC;
2587
2588 /* Workaround: On old hardware the HW-MAC-address-filter
2589 * doesn't work properly, so always run promisc in filter
2590 * it in software. */
2591 if (dev->dev->id.revision <= 4)
2592 ctl |= B43_MACCTL_PROMISC;
2593
2594 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2595
2596 cfp_pretbtt = 2;
2597 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2598 if (dev->dev->bus->chip_id == 0x4306 &&
2599 dev->dev->bus->chip_rev == 3)
2600 cfp_pretbtt = 100;
2601 else
2602 cfp_pretbtt = 50;
2603 }
2604 b43_write16(dev, 0x612, cfp_pretbtt);
2605 }
2606
2607 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2608 {
2609 u16 offset;
2610
2611 if (is_ofdm) {
2612 offset = 0x480;
2613 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2614 } else {
2615 offset = 0x4C0;
2616 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2617 }
2618 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2619 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2620 }
2621
2622 static void b43_rate_memory_init(struct b43_wldev *dev)
2623 {
2624 switch (dev->phy.type) {
2625 case B43_PHYTYPE_A:
2626 case B43_PHYTYPE_G:
2627 case B43_PHYTYPE_N:
2628 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2629 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2630 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2631 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2632 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2633 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2634 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2635 if (dev->phy.type == B43_PHYTYPE_A)
2636 break;
2637 /* fallthrough */
2638 case B43_PHYTYPE_B:
2639 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2640 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2641 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2642 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2643 break;
2644 default:
2645 B43_WARN_ON(1);
2646 }
2647 }
2648
2649 /* Set the default values for the PHY TX Control Words. */
2650 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2651 {
2652 u16 ctl = 0;
2653
2654 ctl |= B43_TXH_PHY_ENC_CCK;
2655 ctl |= B43_TXH_PHY_ANT01AUTO;
2656 ctl |= B43_TXH_PHY_TXPWR;
2657
2658 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2659 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2660 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2661 }
2662
2663 /* Set the TX-Antenna for management frames sent by firmware. */
2664 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2665 {
2666 u16 ant;
2667 u16 tmp;
2668
2669 ant = b43_antenna_to_phyctl(antenna);
2670
2671 /* For ACK/CTS */
2672 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2673 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2674 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2675 /* For Probe Resposes */
2676 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2677 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2678 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2679 }
2680
2681 /* This is the opposite of b43_chip_init() */
2682 static void b43_chip_exit(struct b43_wldev *dev)
2683 {
2684 b43_phy_exit(dev);
2685 b43_gpio_cleanup(dev);
2686 /* firmware is released later */
2687 }
2688
2689 /* Initialize the chip
2690 * http://bcm-specs.sipsolutions.net/ChipInit
2691 */
2692 static int b43_chip_init(struct b43_wldev *dev)
2693 {
2694 struct b43_phy *phy = &dev->phy;
2695 int err;
2696 u32 value32, macctl;
2697 u16 value16;
2698
2699 /* Initialize the MAC control */
2700 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2701 if (dev->phy.gmode)
2702 macctl |= B43_MACCTL_GMODE;
2703 macctl |= B43_MACCTL_INFRA;
2704 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2705
2706 err = b43_request_firmware(dev);
2707 if (err)
2708 goto out;
2709 err = b43_upload_microcode(dev);
2710 if (err)
2711 goto out; /* firmware is released later */
2712
2713 err = b43_gpio_init(dev);
2714 if (err)
2715 goto out; /* firmware is released later */
2716
2717 err = b43_upload_initvals(dev);
2718 if (err)
2719 goto err_gpio_clean;
2720
2721 /* Turn the Analog on and initialize the PHY. */
2722 phy->ops->switch_analog(dev, 1);
2723 err = b43_phy_init(dev);
2724 if (err)
2725 goto err_gpio_clean;
2726
2727 /* Disable Interference Mitigation. */
2728 if (phy->ops->interf_mitigation)
2729 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2730
2731 /* Select the antennae */
2732 if (phy->ops->set_rx_antenna)
2733 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2734 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2735
2736 if (phy->type == B43_PHYTYPE_B) {
2737 value16 = b43_read16(dev, 0x005E);
2738 value16 |= 0x0004;
2739 b43_write16(dev, 0x005E, value16);
2740 }
2741 b43_write32(dev, 0x0100, 0x01000000);
2742 if (dev->dev->id.revision < 5)
2743 b43_write32(dev, 0x010C, 0x01000000);
2744
2745 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2746 & ~B43_MACCTL_INFRA);
2747 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2748 | B43_MACCTL_INFRA);
2749
2750 /* Probe Response Timeout value */
2751 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2752 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2753
2754 /* Initially set the wireless operation mode. */
2755 b43_adjust_opmode(dev);
2756
2757 if (dev->dev->id.revision < 3) {
2758 b43_write16(dev, 0x060E, 0x0000);
2759 b43_write16(dev, 0x0610, 0x8000);
2760 b43_write16(dev, 0x0604, 0x0000);
2761 b43_write16(dev, 0x0606, 0x0200);
2762 } else {
2763 b43_write32(dev, 0x0188, 0x80000000);
2764 b43_write32(dev, 0x018C, 0x02000000);
2765 }
2766 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2767 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2768 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2769 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2770 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2771 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2772 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2773
2774 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2775 value32 |= 0x00100000;
2776 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2777
2778 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2779 dev->dev->bus->chipco.fast_pwrup_delay);
2780
2781 err = 0;
2782 b43dbg(dev->wl, "Chip initialized\n");
2783 out:
2784 return err;
2785
2786 err_gpio_clean:
2787 b43_gpio_cleanup(dev);
2788 return err;
2789 }
2790
2791 static void b43_periodic_every60sec(struct b43_wldev *dev)
2792 {
2793 const struct b43_phy_operations *ops = dev->phy.ops;
2794
2795 if (ops->pwork_60sec)
2796 ops->pwork_60sec(dev);
2797
2798 /* Force check the TX power emission now. */
2799 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2800 }
2801
2802 static void b43_periodic_every30sec(struct b43_wldev *dev)
2803 {
2804 /* Update device statistics. */
2805 b43_calculate_link_quality(dev);
2806 }
2807
2808 static void b43_periodic_every15sec(struct b43_wldev *dev)
2809 {
2810 struct b43_phy *phy = &dev->phy;
2811 u16 wdr;
2812
2813 if (dev->fw.opensource) {
2814 /* Check if the firmware is still alive.
2815 * It will reset the watchdog counter to 0 in its idle loop. */
2816 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2817 if (unlikely(wdr)) {
2818 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2819 b43_controller_restart(dev, "Firmware watchdog");
2820 return;
2821 } else {
2822 b43_shm_write16(dev, B43_SHM_SCRATCH,
2823 B43_WATCHDOG_REG, 1);
2824 }
2825 }
2826
2827 if (phy->ops->pwork_15sec)
2828 phy->ops->pwork_15sec(dev);
2829
2830 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2831 wmb();
2832 }
2833
2834 static void do_periodic_work(struct b43_wldev *dev)
2835 {
2836 unsigned int state;
2837
2838 state = dev->periodic_state;
2839 if (state % 4 == 0)
2840 b43_periodic_every60sec(dev);
2841 if (state % 2 == 0)
2842 b43_periodic_every30sec(dev);
2843 b43_periodic_every15sec(dev);
2844 }
2845
2846 /* Periodic work locking policy:
2847 * The whole periodic work handler is protected by
2848 * wl->mutex. If another lock is needed somewhere in the
2849 * pwork callchain, it's aquired in-place, where it's needed.
2850 */
2851 static void b43_periodic_work_handler(struct work_struct *work)
2852 {
2853 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2854 periodic_work.work);
2855 struct b43_wl *wl = dev->wl;
2856 unsigned long delay;
2857
2858 mutex_lock(&wl->mutex);
2859
2860 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2861 goto out;
2862 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2863 goto out_requeue;
2864
2865 do_periodic_work(dev);
2866
2867 dev->periodic_state++;
2868 out_requeue:
2869 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2870 delay = msecs_to_jiffies(50);
2871 else
2872 delay = round_jiffies_relative(HZ * 15);
2873 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2874 out:
2875 mutex_unlock(&wl->mutex);
2876 }
2877
2878 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2879 {
2880 struct delayed_work *work = &dev->periodic_work;
2881
2882 dev->periodic_state = 0;
2883 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2884 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2885 }
2886
2887 /* Check if communication with the device works correctly. */
2888 static int b43_validate_chipaccess(struct b43_wldev *dev)
2889 {
2890 u32 v, backup;
2891
2892 backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2893
2894 /* Check for read/write and endianness problems. */
2895 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2896 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2897 goto error;
2898 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2899 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2900 goto error;
2901
2902 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2903
2904 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2905 /* The 32bit register shadows the two 16bit registers
2906 * with update sideeffects. Validate this. */
2907 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2908 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2909 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2910 goto error;
2911 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2912 goto error;
2913 }
2914 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2915
2916 v = b43_read32(dev, B43_MMIO_MACCTL);
2917 v |= B43_MACCTL_GMODE;
2918 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2919 goto error;
2920
2921 return 0;
2922 error:
2923 b43err(dev->wl, "Failed to validate the chipaccess\n");
2924 return -ENODEV;
2925 }
2926
2927 static void b43_security_init(struct b43_wldev *dev)
2928 {
2929 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2930 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2931 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2932 /* KTP is a word address, but we address SHM bytewise.
2933 * So multiply by two.
2934 */
2935 dev->ktp *= 2;
2936 if (dev->dev->id.revision >= 5) {
2937 /* Number of RCMTA address slots */
2938 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2939 }
2940 b43_clear_keys(dev);
2941 }
2942
2943 static int b43_rng_read(struct hwrng *rng, u32 * data)
2944 {
2945 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2946 unsigned long flags;
2947
2948 /* Don't take wl->mutex here, as it could deadlock with
2949 * hwrng internal locking. It's not needed to take
2950 * wl->mutex here, anyway. */
2951
2952 spin_lock_irqsave(&wl->irq_lock, flags);
2953 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2954 spin_unlock_irqrestore(&wl->irq_lock, flags);
2955
2956 return (sizeof(u16));
2957 }
2958
2959 static void b43_rng_exit(struct b43_wl *wl)
2960 {
2961 if (wl->rng_initialized)
2962 hwrng_unregister(&wl->rng);
2963 }
2964
2965 static int b43_rng_init(struct b43_wl *wl)
2966 {
2967 int err;
2968
2969 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2970 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2971 wl->rng.name = wl->rng_name;
2972 wl->rng.data_read = b43_rng_read;
2973 wl->rng.priv = (unsigned long)wl;
2974 wl->rng_initialized = 1;
2975 err = hwrng_register(&wl->rng);
2976 if (err) {
2977 wl->rng_initialized = 0;
2978 b43err(wl, "Failed to register the random "
2979 "number generator (%d)\n", err);
2980 }
2981
2982 return err;
2983 }
2984
2985 static int b43_op_tx(struct ieee80211_hw *hw,
2986 struct sk_buff *skb)
2987 {
2988 struct b43_wl *wl = hw_to_b43_wl(hw);
2989 struct b43_wldev *dev = wl->current_dev;
2990 unsigned long flags;
2991 int err;
2992
2993 if (unlikely(skb->len < 2 + 2 + 6)) {
2994 /* Too short, this can't be a valid frame. */
2995 goto drop_packet;
2996 }
2997 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
2998 if (unlikely(!dev))
2999 goto drop_packet;
3000
3001 /* Transmissions on seperate queues can run concurrently. */
3002 read_lock_irqsave(&wl->tx_lock, flags);
3003
3004 err = -ENODEV;
3005 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3006 if (b43_using_pio_transfers(dev))
3007 err = b43_pio_tx(dev, skb);
3008 else
3009 err = b43_dma_tx(dev, skb);
3010 }
3011
3012 read_unlock_irqrestore(&wl->tx_lock, flags);
3013
3014 if (unlikely(err))
3015 goto drop_packet;
3016 return NETDEV_TX_OK;
3017
3018 drop_packet:
3019 /* We can not transmit this packet. Drop it. */
3020 dev_kfree_skb_any(skb);
3021 return NETDEV_TX_OK;
3022 }
3023
3024 /* Locking: wl->irq_lock */
3025 static void b43_qos_params_upload(struct b43_wldev *dev,
3026 const struct ieee80211_tx_queue_params *p,
3027 u16 shm_offset)
3028 {
3029 u16 params[B43_NR_QOSPARAMS];
3030 int bslots, tmp;
3031 unsigned int i;
3032
3033 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3034
3035 memset(&params, 0, sizeof(params));
3036
3037 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3038 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3039 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3040 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3041 params[B43_QOSPARAM_AIFS] = p->aifs;
3042 params[B43_QOSPARAM_BSLOTS] = bslots;
3043 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3044
3045 for (i = 0; i < ARRAY_SIZE(params); i++) {
3046 if (i == B43_QOSPARAM_STATUS) {
3047 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3048 shm_offset + (i * 2));
3049 /* Mark the parameters as updated. */
3050 tmp |= 0x100;
3051 b43_shm_write16(dev, B43_SHM_SHARED,
3052 shm_offset + (i * 2),
3053 tmp);
3054 } else {
3055 b43_shm_write16(dev, B43_SHM_SHARED,
3056 shm_offset + (i * 2),
3057 params[i]);
3058 }
3059 }
3060 }
3061
3062 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3063 static const u16 b43_qos_shm_offsets[] = {
3064 /* [mac80211-queue-nr] = SHM_OFFSET, */
3065 [0] = B43_QOS_VOICE,
3066 [1] = B43_QOS_VIDEO,
3067 [2] = B43_QOS_BESTEFFORT,
3068 [3] = B43_QOS_BACKGROUND,
3069 };
3070
3071 /* Update all QOS parameters in hardware. */
3072 static void b43_qos_upload_all(struct b43_wldev *dev)
3073 {
3074 struct b43_wl *wl = dev->wl;
3075 struct b43_qos_params *params;
3076 unsigned int i;
3077
3078 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3079 ARRAY_SIZE(wl->qos_params));
3080
3081 b43_mac_suspend(dev);
3082 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3083 params = &(wl->qos_params[i]);
3084 b43_qos_params_upload(dev, &(params->p),
3085 b43_qos_shm_offsets[i]);
3086 }
3087 b43_mac_enable(dev);
3088 }
3089
3090 static void b43_qos_clear(struct b43_wl *wl)
3091 {
3092 struct b43_qos_params *params;
3093 unsigned int i;
3094
3095 /* Initialize QoS parameters to sane defaults. */
3096
3097 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3098 ARRAY_SIZE(wl->qos_params));
3099
3100 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3101 params = &(wl->qos_params[i]);
3102
3103 switch (b43_qos_shm_offsets[i]) {
3104 case B43_QOS_VOICE:
3105 params->p.txop = 0;
3106 params->p.aifs = 2;
3107 params->p.cw_min = 0x0001;
3108 params->p.cw_max = 0x0001;
3109 break;
3110 case B43_QOS_VIDEO:
3111 params->p.txop = 0;
3112 params->p.aifs = 2;
3113 params->p.cw_min = 0x0001;
3114 params->p.cw_max = 0x0001;
3115 break;
3116 case B43_QOS_BESTEFFORT:
3117 params->p.txop = 0;
3118 params->p.aifs = 3;
3119 params->p.cw_min = 0x0001;
3120 params->p.cw_max = 0x03FF;
3121 break;
3122 case B43_QOS_BACKGROUND:
3123 params->p.txop = 0;
3124 params->p.aifs = 7;
3125 params->p.cw_min = 0x0001;
3126 params->p.cw_max = 0x03FF;
3127 break;
3128 default:
3129 B43_WARN_ON(1);
3130 }
3131 }
3132 }
3133
3134 /* Initialize the core's QOS capabilities */
3135 static void b43_qos_init(struct b43_wldev *dev)
3136 {
3137 /* Upload the current QOS parameters. */
3138 b43_qos_upload_all(dev);
3139
3140 /* Enable QOS support. */
3141 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3142 b43_write16(dev, B43_MMIO_IFSCTL,
3143 b43_read16(dev, B43_MMIO_IFSCTL)
3144 | B43_MMIO_IFSCTL_USE_EDCF);
3145 }
3146
3147 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3148 const struct ieee80211_tx_queue_params *params)
3149 {
3150 struct b43_wl *wl = hw_to_b43_wl(hw);
3151 struct b43_wldev *dev;
3152 unsigned int queue = (unsigned int)_queue;
3153 int err = -ENODEV;
3154
3155 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3156 /* Queue not available or don't support setting
3157 * params on this queue. Return success to not
3158 * confuse mac80211. */
3159 return 0;
3160 }
3161 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3162 ARRAY_SIZE(wl->qos_params));
3163
3164 mutex_lock(&wl->mutex);
3165 dev = wl->current_dev;
3166 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3167 goto out_unlock;
3168
3169 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3170 b43_mac_suspend(dev);
3171 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3172 b43_qos_shm_offsets[queue]);
3173 b43_mac_enable(dev);
3174 err = 0;
3175
3176 out_unlock:
3177 mutex_unlock(&wl->mutex);
3178
3179 return err;
3180 }
3181
3182 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3183 struct ieee80211_tx_queue_stats *stats)
3184 {
3185 struct b43_wl *wl = hw_to_b43_wl(hw);
3186 struct b43_wldev *dev = wl->current_dev;
3187 unsigned long flags;
3188 int err = -ENODEV;
3189
3190 if (!dev)
3191 goto out;
3192 spin_lock_irqsave(&wl->irq_lock, flags);
3193 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3194 if (b43_using_pio_transfers(dev))
3195 b43_pio_get_tx_stats(dev, stats);
3196 else
3197 b43_dma_get_tx_stats(dev, stats);
3198 err = 0;
3199 }
3200 spin_unlock_irqrestore(&wl->irq_lock, flags);
3201 out:
3202 return err;
3203 }
3204
3205 static int b43_op_get_stats(struct ieee80211_hw *hw,
3206 struct ieee80211_low_level_stats *stats)
3207 {
3208 struct b43_wl *wl = hw_to_b43_wl(hw);
3209 unsigned long flags;
3210
3211 spin_lock_irqsave(&wl->irq_lock, flags);
3212 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3213 spin_unlock_irqrestore(&wl->irq_lock, flags);
3214
3215 return 0;
3216 }
3217
3218 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3219 {
3220 struct ssb_device *sdev = dev->dev;
3221 u32 tmslow;
3222
3223 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3224 tmslow &= ~B43_TMSLOW_GMODE;
3225 tmslow |= B43_TMSLOW_PHYRESET;
3226 tmslow |= SSB_TMSLOW_FGC;
3227 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3228 msleep(1);
3229
3230 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3231 tmslow &= ~SSB_TMSLOW_FGC;
3232 tmslow |= B43_TMSLOW_PHYRESET;
3233 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3234 msleep(1);
3235 }
3236
3237 static const char * band_to_string(enum ieee80211_band band)
3238 {
3239 switch (band) {
3240 case IEEE80211_BAND_5GHZ:
3241 return "5";
3242 case IEEE80211_BAND_2GHZ:
3243 return "2.4";
3244 default:
3245 break;
3246 }
3247 B43_WARN_ON(1);
3248 return "";
3249 }
3250
3251 /* Expects wl->mutex locked */
3252 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3253 {
3254 struct b43_wldev *up_dev = NULL;
3255 struct b43_wldev *down_dev;
3256 struct b43_wldev *d;
3257 int err;
3258 bool gmode;
3259 int prev_status;
3260
3261 /* Find a device and PHY which supports the band. */
3262 list_for_each_entry(d, &wl->devlist, list) {
3263 switch (chan->band) {
3264 case IEEE80211_BAND_5GHZ:
3265 if (d->phy.supports_5ghz) {
3266 up_dev = d;
3267 gmode = 0;
3268 }
3269 break;
3270 case IEEE80211_BAND_2GHZ:
3271 if (d->phy.supports_2ghz) {
3272 up_dev = d;
3273 gmode = 1;
3274 }
3275 break;
3276 default:
3277 B43_WARN_ON(1);
3278 return -EINVAL;
3279 }
3280 if (up_dev)
3281 break;
3282 }
3283 if (!up_dev) {
3284 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3285 band_to_string(chan->band));
3286 return -ENODEV;
3287 }
3288 if ((up_dev == wl->current_dev) &&
3289 (!!wl->current_dev->phy.gmode == !!gmode)) {
3290 /* This device is already running. */
3291 return 0;
3292 }
3293 b43dbg(wl, "Switching to %s-GHz band\n",
3294 band_to_string(chan->band));
3295 down_dev = wl->current_dev;
3296
3297 prev_status = b43_status(down_dev);
3298 /* Shutdown the currently running core. */
3299 if (prev_status >= B43_STAT_STARTED)
3300 b43_wireless_core_stop(down_dev);
3301 if (prev_status >= B43_STAT_INITIALIZED)
3302 b43_wireless_core_exit(down_dev);
3303
3304 if (down_dev != up_dev) {
3305 /* We switch to a different core, so we put PHY into
3306 * RESET on the old core. */
3307 b43_put_phy_into_reset(down_dev);
3308 }
3309
3310 /* Now start the new core. */
3311 up_dev->phy.gmode = gmode;
3312 if (prev_status >= B43_STAT_INITIALIZED) {
3313 err = b43_wireless_core_init(up_dev);
3314 if (err) {
3315 b43err(wl, "Fatal: Could not initialize device for "
3316 "selected %s-GHz band\n",
3317 band_to_string(chan->band));
3318 goto init_failure;
3319 }
3320 }
3321 if (prev_status >= B43_STAT_STARTED) {
3322 err = b43_wireless_core_start(up_dev);
3323 if (err) {
3324 b43err(wl, "Fatal: Coult not start device for "
3325 "selected %s-GHz band\n",
3326 band_to_string(chan->band));
3327 b43_wireless_core_exit(up_dev);
3328 goto init_failure;
3329 }
3330 }
3331 B43_WARN_ON(b43_status(up_dev) != prev_status);
3332
3333 wl->current_dev = up_dev;
3334
3335 return 0;
3336 init_failure:
3337 /* Whoops, failed to init the new core. No core is operating now. */
3338 wl->current_dev = NULL;
3339 return err;
3340 }
3341
3342 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3343 {
3344 struct b43_wl *wl = hw_to_b43_wl(hw);
3345 struct b43_wldev *dev;
3346 struct b43_phy *phy;
3347 unsigned long flags;
3348 int antenna;
3349 int err = 0;
3350 u32 savedirqs;
3351
3352 mutex_lock(&wl->mutex);
3353
3354 /* Switch the band (if necessary). This might change the active core. */
3355 err = b43_switch_band(wl, conf->channel);
3356 if (err)
3357 goto out_unlock_mutex;
3358 dev = wl->current_dev;
3359 phy = &dev->phy;
3360
3361 /* Disable IRQs while reconfiguring the device.
3362 * This makes it possible to drop the spinlock throughout
3363 * the reconfiguration process. */
3364 spin_lock_irqsave(&wl->irq_lock, flags);
3365 if (b43_status(dev) < B43_STAT_STARTED) {
3366 spin_unlock_irqrestore(&wl->irq_lock, flags);
3367 goto out_unlock_mutex;
3368 }
3369 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
3370 spin_unlock_irqrestore(&wl->irq_lock, flags);
3371 b43_synchronize_irq(dev);
3372
3373 /* Switch to the requested channel.
3374 * The firmware takes care of races with the TX handler. */
3375 if (conf->channel->hw_value != phy->channel)
3376 b43_switch_channel(dev, conf->channel->hw_value);
3377
3378 /* Enable/Disable ShortSlot timing. */
3379 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
3380 dev->short_slot) {
3381 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
3382 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
3383 b43_short_slot_timing_enable(dev);
3384 else
3385 b43_short_slot_timing_disable(dev);
3386 }
3387
3388 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3389
3390 /* Adjust the desired TX power level. */
3391 if (conf->power_level != 0) {
3392 spin_lock_irqsave(&wl->irq_lock, flags);
3393 if (conf->power_level != phy->desired_txpower) {
3394 phy->desired_txpower = conf->power_level;
3395 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3396 B43_TXPWR_IGNORE_TSSI);
3397 }
3398 spin_unlock_irqrestore(&wl->irq_lock, flags);
3399 }
3400
3401 /* Antennas for RX and management frame TX. */
3402 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
3403 b43_mgmtframe_txantenna(dev, antenna);
3404 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
3405 if (phy->ops->set_rx_antenna)
3406 phy->ops->set_rx_antenna(dev, antenna);
3407
3408 /* Update templates for AP/mesh mode. */
3409 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3410 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
3411 b43_set_beacon_int(dev, conf->beacon_int);
3412
3413 if (!!conf->radio_enabled != phy->radio_on) {
3414 if (conf->radio_enabled) {
3415 b43_software_rfkill(dev, RFKILL_STATE_UNBLOCKED);
3416 b43info(dev->wl, "Radio turned on by software\n");
3417 if (!dev->radio_hw_enable) {
3418 b43info(dev->wl, "The hardware RF-kill button "
3419 "still turns the radio physically off. "
3420 "Press the button to turn it on.\n");
3421 }
3422 } else {
3423 b43_software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED);
3424 b43info(dev->wl, "Radio turned off by software\n");
3425 }
3426 }
3427
3428 spin_lock_irqsave(&wl->irq_lock, flags);
3429 b43_interrupt_enable(dev, savedirqs);
3430 mmiowb();
3431 spin_unlock_irqrestore(&wl->irq_lock, flags);
3432 out_unlock_mutex:
3433 mutex_unlock(&wl->mutex);
3434
3435 return err;
3436 }
3437
3438 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3439 const u8 *local_addr, const u8 *addr,
3440 struct ieee80211_key_conf *key)
3441 {
3442 struct b43_wl *wl = hw_to_b43_wl(hw);
3443 struct b43_wldev *dev;
3444 unsigned long flags;
3445 u8 algorithm;
3446 u8 index;
3447 int err;
3448 DECLARE_MAC_BUF(mac);
3449
3450 if (modparam_nohwcrypt)
3451 return -ENOSPC; /* User disabled HW-crypto */
3452
3453 mutex_lock(&wl->mutex);
3454 spin_lock_irqsave(&wl->irq_lock, flags);
3455
3456 dev = wl->current_dev;
3457 err = -ENODEV;
3458 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3459 goto out_unlock;
3460
3461 if (dev->fw.pcm_request_failed) {
3462 /* We don't have firmware for the crypto engine.
3463 * Must use software-crypto. */
3464 err = -EOPNOTSUPP;
3465 goto out_unlock;
3466 }
3467
3468 err = -EINVAL;
3469 switch (key->alg) {
3470 case ALG_WEP:
3471 if (key->keylen == 5)
3472 algorithm = B43_SEC_ALGO_WEP40;
3473 else
3474 algorithm = B43_SEC_ALGO_WEP104;
3475 break;
3476 case ALG_TKIP:
3477 algorithm = B43_SEC_ALGO_TKIP;
3478 break;
3479 case ALG_CCMP:
3480 algorithm = B43_SEC_ALGO_AES;
3481 break;
3482 default:
3483 B43_WARN_ON(1);
3484 goto out_unlock;
3485 }
3486 index = (u8) (key->keyidx);
3487 if (index > 3)
3488 goto out_unlock;
3489
3490 switch (cmd) {
3491 case SET_KEY:
3492 if (algorithm == B43_SEC_ALGO_TKIP) {
3493 /* FIXME: No TKIP hardware encryption for now. */
3494 err = -EOPNOTSUPP;
3495 goto out_unlock;
3496 }
3497
3498 if (is_broadcast_ether_addr(addr)) {
3499 /* addr is FF:FF:FF:FF:FF:FF for default keys */
3500 err = b43_key_write(dev, index, algorithm,
3501 key->key, key->keylen, NULL, key);
3502 } else {
3503 /*
3504 * either pairwise key or address is 00:00:00:00:00:00
3505 * for transmit-only keys
3506 */
3507 err = b43_key_write(dev, -1, algorithm,
3508 key->key, key->keylen, addr, key);
3509 }
3510 if (err)
3511 goto out_unlock;
3512
3513 if (algorithm == B43_SEC_ALGO_WEP40 ||
3514 algorithm == B43_SEC_ALGO_WEP104) {
3515 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3516 } else {
3517 b43_hf_write(dev,
3518 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3519 }
3520 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3521 break;
3522 case DISABLE_KEY: {
3523 err = b43_key_clear(dev, key->hw_key_idx);
3524 if (err)
3525 goto out_unlock;
3526 break;
3527 }
3528 default:
3529 B43_WARN_ON(1);
3530 }
3531 out_unlock:
3532 spin_unlock_irqrestore(&wl->irq_lock, flags);
3533 mutex_unlock(&wl->mutex);
3534 if (!err) {
3535 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3536 "mac: %s\n",
3537 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3538 print_mac(mac, addr));
3539 }
3540 return err;
3541 }
3542
3543 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3544 unsigned int changed, unsigned int *fflags,
3545 int mc_count, struct dev_addr_list *mc_list)
3546 {
3547 struct b43_wl *wl = hw_to_b43_wl(hw);
3548 struct b43_wldev *dev = wl->current_dev;
3549 unsigned long flags;
3550
3551 if (!dev) {
3552 *fflags = 0;
3553 return;
3554 }
3555
3556 spin_lock_irqsave(&wl->irq_lock, flags);
3557 *fflags &= FIF_PROMISC_IN_BSS |
3558 FIF_ALLMULTI |
3559 FIF_FCSFAIL |
3560 FIF_PLCPFAIL |
3561 FIF_CONTROL |
3562 FIF_OTHER_BSS |
3563 FIF_BCN_PRBRESP_PROMISC;
3564
3565 changed &= FIF_PROMISC_IN_BSS |
3566 FIF_ALLMULTI |
3567 FIF_FCSFAIL |
3568 FIF_PLCPFAIL |
3569 FIF_CONTROL |
3570 FIF_OTHER_BSS |
3571 FIF_BCN_PRBRESP_PROMISC;
3572
3573 wl->filter_flags = *fflags;
3574
3575 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3576 b43_adjust_opmode(dev);
3577 spin_unlock_irqrestore(&wl->irq_lock, flags);
3578 }
3579
3580 static int b43_op_config_interface(struct ieee80211_hw *hw,
3581 struct ieee80211_vif *vif,
3582 struct ieee80211_if_conf *conf)
3583 {
3584 struct b43_wl *wl = hw_to_b43_wl(hw);
3585 struct b43_wldev *dev = wl->current_dev;
3586 unsigned long flags;
3587
3588 if (!dev)
3589 return -ENODEV;
3590 mutex_lock(&wl->mutex);
3591 spin_lock_irqsave(&wl->irq_lock, flags);
3592 B43_WARN_ON(wl->vif != vif);
3593 if (conf->bssid)
3594 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3595 else
3596 memset(wl->bssid, 0, ETH_ALEN);
3597 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3598 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3599 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT)) {
3600 B43_WARN_ON(vif->type != wl->if_type);
3601 if (conf->changed & IEEE80211_IFCC_SSID)
3602 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3603 if (conf->changed & IEEE80211_IFCC_BEACON)
3604 b43_update_templates(wl);
3605 } else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) {
3606 if (conf->changed & IEEE80211_IFCC_BEACON)
3607 b43_update_templates(wl);
3608 }
3609 b43_write_mac_bssid_templates(dev);
3610 }
3611 spin_unlock_irqrestore(&wl->irq_lock, flags);
3612 mutex_unlock(&wl->mutex);
3613
3614 return 0;
3615 }
3616
3617 /* Locking: wl->mutex */
3618 static void b43_wireless_core_stop(struct b43_wldev *dev)
3619 {
3620 struct b43_wl *wl = dev->wl;
3621 unsigned long flags;
3622
3623 if (b43_status(dev) < B43_STAT_STARTED)
3624 return;
3625
3626 /* Disable and sync interrupts. We must do this before than
3627 * setting the status to INITIALIZED, as the interrupt handler
3628 * won't care about IRQs then. */
3629 spin_lock_irqsave(&wl->irq_lock, flags);
3630 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3631 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3632 spin_unlock_irqrestore(&wl->irq_lock, flags);
3633 b43_synchronize_irq(dev);
3634
3635 write_lock_irqsave(&wl->tx_lock, flags);
3636 b43_set_status(dev, B43_STAT_INITIALIZED);
3637 write_unlock_irqrestore(&wl->tx_lock, flags);
3638
3639 b43_pio_stop(dev);
3640 mutex_unlock(&wl->mutex);
3641 /* Must unlock as it would otherwise deadlock. No races here.
3642 * Cancel the possibly running self-rearming periodic work. */
3643 cancel_delayed_work_sync(&dev->periodic_work);
3644 mutex_lock(&wl->mutex);
3645
3646 b43_mac_suspend(dev);
3647 free_irq(dev->dev->irq, dev);
3648 b43dbg(wl, "Wireless interface stopped\n");
3649 }
3650
3651 /* Locking: wl->mutex */
3652 static int b43_wireless_core_start(struct b43_wldev *dev)
3653 {
3654 int err;
3655
3656 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3657
3658 drain_txstatus_queue(dev);
3659 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3660 IRQF_SHARED, KBUILD_MODNAME, dev);
3661 if (err) {
3662 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3663 goto out;
3664 }
3665
3666 /* We are ready to run. */
3667 b43_set_status(dev, B43_STAT_STARTED);
3668
3669 /* Start data flow (TX/RX). */
3670 b43_mac_enable(dev);
3671 b43_interrupt_enable(dev, dev->irq_savedstate);
3672
3673 /* Start maintainance work */
3674 b43_periodic_tasks_setup(dev);
3675
3676 b43dbg(dev->wl, "Wireless interface started\n");
3677 out:
3678 return err;
3679 }
3680
3681 /* Get PHY and RADIO versioning numbers */
3682 static int b43_phy_versioning(struct b43_wldev *dev)
3683 {
3684 struct b43_phy *phy = &dev->phy;
3685 u32 tmp;
3686 u8 analog_type;
3687 u8 phy_type;
3688 u8 phy_rev;
3689 u16 radio_manuf;
3690 u16 radio_ver;
3691 u16 radio_rev;
3692 int unsupported = 0;
3693
3694 /* Get PHY versioning */
3695 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3696 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3697 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3698 phy_rev = (tmp & B43_PHYVER_VERSION);
3699 switch (phy_type) {
3700 case B43_PHYTYPE_A:
3701 if (phy_rev >= 4)
3702 unsupported = 1;
3703 break;
3704 case B43_PHYTYPE_B:
3705 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3706 && phy_rev != 7)
3707 unsupported = 1;
3708 break;
3709 case B43_PHYTYPE_G:
3710 if (phy_rev > 9)
3711 unsupported = 1;
3712 break;
3713 #ifdef CONFIG_B43_NPHY
3714 case B43_PHYTYPE_N:
3715 if (phy_rev > 1)
3716 unsupported = 1;
3717 break;
3718 #endif
3719 default:
3720 unsupported = 1;
3721 };
3722 if (unsupported) {
3723 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3724 "(Analog %u, Type %u, Revision %u)\n",
3725 analog_type, phy_type, phy_rev);
3726 return -EOPNOTSUPP;
3727 }
3728 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3729 analog_type, phy_type, phy_rev);
3730
3731 /* Get RADIO versioning */
3732 if (dev->dev->bus->chip_id == 0x4317) {
3733 if (dev->dev->bus->chip_rev == 0)
3734 tmp = 0x3205017F;
3735 else if (dev->dev->bus->chip_rev == 1)
3736 tmp = 0x4205017F;
3737 else
3738 tmp = 0x5205017F;
3739 } else {
3740 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3741 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3742 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3743 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3744 }
3745 radio_manuf = (tmp & 0x00000FFF);
3746 radio_ver = (tmp & 0x0FFFF000) >> 12;
3747 radio_rev = (tmp & 0xF0000000) >> 28;
3748 if (radio_manuf != 0x17F /* Broadcom */)
3749 unsupported = 1;
3750 switch (phy_type) {
3751 case B43_PHYTYPE_A:
3752 if (radio_ver != 0x2060)
3753 unsupported = 1;
3754 if (radio_rev != 1)
3755 unsupported = 1;
3756 if (radio_manuf != 0x17F)
3757 unsupported = 1;
3758 break;
3759 case B43_PHYTYPE_B:
3760 if ((radio_ver & 0xFFF0) != 0x2050)
3761 unsupported = 1;
3762 break;
3763 case B43_PHYTYPE_G:
3764 if (radio_ver != 0x2050)
3765 unsupported = 1;
3766 break;
3767 case B43_PHYTYPE_N:
3768 if (radio_ver != 0x2055)
3769 unsupported = 1;
3770 break;
3771 default:
3772 B43_WARN_ON(1);
3773 }
3774 if (unsupported) {
3775 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3776 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3777 radio_manuf, radio_ver, radio_rev);
3778 return -EOPNOTSUPP;
3779 }
3780 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3781 radio_manuf, radio_ver, radio_rev);
3782
3783 phy->radio_manuf = radio_manuf;
3784 phy->radio_ver = radio_ver;
3785 phy->radio_rev = radio_rev;
3786
3787 phy->analog = analog_type;
3788 phy->type = phy_type;
3789 phy->rev = phy_rev;
3790
3791 return 0;
3792 }
3793
3794 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3795 struct b43_phy *phy)
3796 {
3797 phy->hardware_power_control = !!modparam_hwpctl;
3798 phy->next_txpwr_check_time = jiffies;
3799 /* PHY TX errors counter. */
3800 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3801 }
3802
3803 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3804 {
3805 dev->dfq_valid = 0;
3806
3807 /* Assume the radio is enabled. If it's not enabled, the state will
3808 * immediately get fixed on the first periodic work run. */
3809 dev->radio_hw_enable = 1;
3810
3811 /* Stats */
3812 memset(&dev->stats, 0, sizeof(dev->stats));
3813
3814 setup_struct_phy_for_init(dev, &dev->phy);
3815
3816 /* IRQ related flags */
3817 dev->irq_reason = 0;
3818 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3819 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3820
3821 dev->mac_suspended = 1;
3822
3823 /* Noise calculation context */
3824 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3825 }
3826
3827 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3828 {
3829 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3830 u64 hf;
3831
3832 if (!modparam_btcoex)
3833 return;
3834 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3835 return;
3836 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3837 return;
3838
3839 hf = b43_hf_read(dev);
3840 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3841 hf |= B43_HF_BTCOEXALT;
3842 else
3843 hf |= B43_HF_BTCOEX;
3844 b43_hf_write(dev, hf);
3845 }
3846
3847 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3848 {
3849 if (!modparam_btcoex)
3850 return;
3851 //TODO
3852 }
3853
3854 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3855 {
3856 #ifdef CONFIG_SSB_DRIVER_PCICORE
3857 struct ssb_bus *bus = dev->dev->bus;
3858 u32 tmp;
3859
3860 if (bus->pcicore.dev &&
3861 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3862 bus->pcicore.dev->id.revision <= 5) {
3863 /* IMCFGLO timeouts workaround. */
3864 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3865 tmp &= ~SSB_IMCFGLO_REQTO;
3866 tmp &= ~SSB_IMCFGLO_SERTO;
3867 switch (bus->bustype) {
3868 case SSB_BUSTYPE_PCI:
3869 case SSB_BUSTYPE_PCMCIA:
3870 tmp |= 0x32;
3871 break;
3872 case SSB_BUSTYPE_SSB:
3873 tmp |= 0x53;
3874 break;
3875 }
3876 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3877 }
3878 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3879 }
3880
3881 /* Write the short and long frame retry limit values. */
3882 static void b43_set_retry_limits(struct b43_wldev *dev,
3883 unsigned int short_retry,
3884 unsigned int long_retry)
3885 {
3886 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3887 * the chip-internal counter. */
3888 short_retry = min(short_retry, (unsigned int)0xF);
3889 long_retry = min(long_retry, (unsigned int)0xF);
3890
3891 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3892 short_retry);
3893 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3894 long_retry);
3895 }
3896
3897 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
3898 {
3899 u16 pu_delay;
3900
3901 /* The time value is in microseconds. */
3902 if (dev->phy.type == B43_PHYTYPE_A)
3903 pu_delay = 3700;
3904 else
3905 pu_delay = 1050;
3906 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3907 pu_delay = 500;
3908 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3909 pu_delay = max(pu_delay, (u16)2400);
3910
3911 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
3912 }
3913
3914 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3915 static void b43_set_pretbtt(struct b43_wldev *dev)
3916 {
3917 u16 pretbtt;
3918
3919 /* The time value is in microseconds. */
3920 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
3921 pretbtt = 2;
3922 } else {
3923 if (dev->phy.type == B43_PHYTYPE_A)
3924 pretbtt = 120;
3925 else
3926 pretbtt = 250;
3927 }
3928 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
3929 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
3930 }
3931
3932 /* Shutdown a wireless core */
3933 /* Locking: wl->mutex */
3934 static void b43_wireless_core_exit(struct b43_wldev *dev)
3935 {
3936 u32 macctl;
3937
3938 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3939 if (b43_status(dev) != B43_STAT_INITIALIZED)
3940 return;
3941 b43_set_status(dev, B43_STAT_UNINIT);
3942
3943 /* Stop the microcode PSM. */
3944 macctl = b43_read32(dev, B43_MMIO_MACCTL);
3945 macctl &= ~B43_MACCTL_PSM_RUN;
3946 macctl |= B43_MACCTL_PSM_JMP0;
3947 b43_write32(dev, B43_MMIO_MACCTL, macctl);
3948
3949 if (!dev->suspend_in_progress) {
3950 b43_leds_exit(dev);
3951 b43_rng_exit(dev->wl);
3952 }
3953 b43_dma_free(dev);
3954 b43_pio_free(dev);
3955 b43_chip_exit(dev);
3956 dev->phy.ops->switch_analog(dev, 0);
3957 if (dev->wl->current_beacon) {
3958 dev_kfree_skb_any(dev->wl->current_beacon);
3959 dev->wl->current_beacon = NULL;
3960 }
3961
3962 ssb_device_disable(dev->dev, 0);
3963 ssb_bus_may_powerdown(dev->dev->bus);
3964 }
3965
3966 /* Initialize a wireless core */
3967 static int b43_wireless_core_init(struct b43_wldev *dev)
3968 {
3969 struct b43_wl *wl = dev->wl;
3970 struct ssb_bus *bus = dev->dev->bus;
3971 struct ssb_sprom *sprom = &bus->sprom;
3972 struct b43_phy *phy = &dev->phy;
3973 int err;
3974 u64 hf;
3975 u32 tmp;
3976
3977 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3978
3979 err = ssb_bus_powerup(bus, 0);
3980 if (err)
3981 goto out;
3982 if (!ssb_device_is_enabled(dev->dev)) {
3983 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3984 b43_wireless_core_reset(dev, tmp);
3985 }
3986
3987 /* Reset all data structures. */
3988 setup_struct_wldev_for_init(dev);
3989 phy->ops->prepare_structs(dev);
3990
3991 /* Enable IRQ routing to this device. */
3992 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3993
3994 b43_imcfglo_timeouts_workaround(dev);
3995 b43_bluetooth_coext_disable(dev);
3996 if (phy->ops->prepare_hardware) {
3997 err = phy->ops->prepare_hardware(dev);
3998 if (err)
3999 goto err_busdown;
4000 }
4001 err = b43_chip_init(dev);
4002 if (err)
4003 goto err_busdown;
4004 b43_shm_write16(dev, B43_SHM_SHARED,
4005 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4006 hf = b43_hf_read(dev);
4007 if (phy->type == B43_PHYTYPE_G) {
4008 hf |= B43_HF_SYMW;
4009 if (phy->rev == 1)
4010 hf |= B43_HF_GDCW;
4011 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4012 hf |= B43_HF_OFDMPABOOST;
4013 } else if (phy->type == B43_PHYTYPE_B) {
4014 hf |= B43_HF_SYMW;
4015 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
4016 hf &= ~B43_HF_GDCW;
4017 }
4018 b43_hf_write(dev, hf);
4019
4020 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4021 B43_DEFAULT_LONG_RETRY_LIMIT);
4022 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4023 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4024
4025 /* Disable sending probe responses from firmware.
4026 * Setting the MaxTime to one usec will always trigger
4027 * a timeout, so we never send any probe resp.
4028 * A timeout of zero is infinite. */
4029 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4030
4031 b43_rate_memory_init(dev);
4032 b43_set_phytxctl_defaults(dev);
4033
4034 /* Minimum Contention Window */
4035 if (phy->type == B43_PHYTYPE_B) {
4036 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4037 } else {
4038 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4039 }
4040 /* Maximum Contention Window */
4041 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4042
4043 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4044 dev->__using_pio_transfers = 1;
4045 err = b43_pio_init(dev);
4046 } else {
4047 dev->__using_pio_transfers = 0;
4048 err = b43_dma_init(dev);
4049 }
4050 if (err)
4051 goto err_chip_exit;
4052 b43_qos_init(dev);
4053 b43_set_synth_pu_delay(dev, 1);
4054 b43_bluetooth_coext_enable(dev);
4055
4056 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
4057 b43_upload_card_macaddress(dev);
4058 b43_security_init(dev);
4059 if (!dev->suspend_in_progress)
4060 b43_rng_init(wl);
4061
4062 b43_set_status(dev, B43_STAT_INITIALIZED);
4063
4064 if (!dev->suspend_in_progress)
4065 b43_leds_init(dev);
4066 out:
4067 return err;
4068
4069 err_chip_exit:
4070 b43_chip_exit(dev);
4071 err_busdown:
4072 ssb_bus_may_powerdown(bus);
4073 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4074 return err;
4075 }
4076
4077 static int b43_op_add_interface(struct ieee80211_hw *hw,
4078 struct ieee80211_if_init_conf *conf)
4079 {
4080 struct b43_wl *wl = hw_to_b43_wl(hw);
4081 struct b43_wldev *dev;
4082 unsigned long flags;
4083 int err = -EOPNOTSUPP;
4084
4085 /* TODO: allow WDS/AP devices to coexist */
4086
4087 if (conf->type != NL80211_IFTYPE_AP &&
4088 conf->type != NL80211_IFTYPE_MESH_POINT &&
4089 conf->type != NL80211_IFTYPE_STATION &&
4090 conf->type != NL80211_IFTYPE_WDS &&
4091 conf->type != NL80211_IFTYPE_ADHOC)
4092 return -EOPNOTSUPP;
4093
4094 mutex_lock(&wl->mutex);
4095 if (wl->operating)
4096 goto out_mutex_unlock;
4097
4098 b43dbg(wl, "Adding Interface type %d\n", conf->type);
4099
4100 dev = wl->current_dev;
4101 wl->operating = 1;
4102 wl->vif = conf->vif;
4103 wl->if_type = conf->type;
4104 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4105
4106 spin_lock_irqsave(&wl->irq_lock, flags);
4107 b43_adjust_opmode(dev);
4108 b43_set_pretbtt(dev);
4109 b43_set_synth_pu_delay(dev, 0);
4110 b43_upload_card_macaddress(dev);
4111 spin_unlock_irqrestore(&wl->irq_lock, flags);
4112
4113 err = 0;
4114 out_mutex_unlock:
4115 mutex_unlock(&wl->mutex);
4116
4117 return err;
4118 }
4119
4120 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4121 struct ieee80211_if_init_conf *conf)
4122 {
4123 struct b43_wl *wl = hw_to_b43_wl(hw);
4124 struct b43_wldev *dev = wl->current_dev;
4125 unsigned long flags;
4126
4127 b43dbg(wl, "Removing Interface type %d\n", conf->type);
4128
4129 mutex_lock(&wl->mutex);
4130
4131 B43_WARN_ON(!wl->operating);
4132 B43_WARN_ON(wl->vif != conf->vif);
4133 wl->vif = NULL;
4134
4135 wl->operating = 0;
4136
4137 spin_lock_irqsave(&wl->irq_lock, flags);
4138 b43_adjust_opmode(dev);
4139 memset(wl->mac_addr, 0, ETH_ALEN);
4140 b43_upload_card_macaddress(dev);
4141 spin_unlock_irqrestore(&wl->irq_lock, flags);
4142
4143 mutex_unlock(&wl->mutex);
4144 }
4145
4146 static int b43_op_start(struct ieee80211_hw *hw)
4147 {
4148 struct b43_wl *wl = hw_to_b43_wl(hw);
4149 struct b43_wldev *dev = wl->current_dev;
4150 int did_init = 0;
4151 int err = 0;
4152 bool do_rfkill_exit = 0;
4153
4154 /* Kill all old instance specific information to make sure
4155 * the card won't use it in the short timeframe between start
4156 * and mac80211 reconfiguring it. */
4157 memset(wl->bssid, 0, ETH_ALEN);
4158 memset(wl->mac_addr, 0, ETH_ALEN);
4159 wl->filter_flags = 0;
4160 wl->radiotap_enabled = 0;
4161 b43_qos_clear(wl);
4162 wl->beacon0_uploaded = 0;
4163 wl->beacon1_uploaded = 0;
4164 wl->beacon_templates_virgin = 1;
4165
4166 /* First register RFkill.
4167 * LEDs that are registered later depend on it. */
4168 b43_rfkill_init(dev);
4169
4170 mutex_lock(&wl->mutex);
4171
4172 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4173 err = b43_wireless_core_init(dev);
4174 if (err) {
4175 do_rfkill_exit = 1;
4176 goto out_mutex_unlock;
4177 }
4178 did_init = 1;
4179 }
4180
4181 if (b43_status(dev) < B43_STAT_STARTED) {
4182 err = b43_wireless_core_start(dev);
4183 if (err) {
4184 if (did_init)
4185 b43_wireless_core_exit(dev);
4186 do_rfkill_exit = 1;
4187 goto out_mutex_unlock;
4188 }
4189 }
4190
4191 out_mutex_unlock:
4192 mutex_unlock(&wl->mutex);
4193
4194 if (do_rfkill_exit)
4195 b43_rfkill_exit(dev);
4196
4197 return err;
4198 }
4199
4200 static void b43_op_stop(struct ieee80211_hw *hw)
4201 {
4202 struct b43_wl *wl = hw_to_b43_wl(hw);
4203 struct b43_wldev *dev = wl->current_dev;
4204
4205 b43_rfkill_exit(dev);
4206 cancel_work_sync(&(wl->beacon_update_trigger));
4207
4208 mutex_lock(&wl->mutex);
4209 if (b43_status(dev) >= B43_STAT_STARTED)
4210 b43_wireless_core_stop(dev);
4211 b43_wireless_core_exit(dev);
4212 mutex_unlock(&wl->mutex);
4213
4214 cancel_work_sync(&(wl->txpower_adjust_work));
4215 }
4216
4217 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
4218 u32 short_retry_limit, u32 long_retry_limit)
4219 {
4220 struct b43_wl *wl = hw_to_b43_wl(hw);
4221 struct b43_wldev *dev;
4222 int err = 0;
4223
4224 mutex_lock(&wl->mutex);
4225 dev = wl->current_dev;
4226 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
4227 err = -ENODEV;
4228 goto out_unlock;
4229 }
4230 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
4231 out_unlock:
4232 mutex_unlock(&wl->mutex);
4233
4234 return err;
4235 }
4236
4237 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4238 struct ieee80211_sta *sta, bool set)
4239 {
4240 struct b43_wl *wl = hw_to_b43_wl(hw);
4241 unsigned long flags;
4242
4243 spin_lock_irqsave(&wl->irq_lock, flags);
4244 b43_update_templates(wl);
4245 spin_unlock_irqrestore(&wl->irq_lock, flags);
4246
4247 return 0;
4248 }
4249
4250 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4251 struct ieee80211_vif *vif,
4252 enum sta_notify_cmd notify_cmd,
4253 struct ieee80211_sta *sta)
4254 {
4255 struct b43_wl *wl = hw_to_b43_wl(hw);
4256
4257 B43_WARN_ON(!vif || wl->vif != vif);
4258 }
4259
4260 static const struct ieee80211_ops b43_hw_ops = {
4261 .tx = b43_op_tx,
4262 .conf_tx = b43_op_conf_tx,
4263 .add_interface = b43_op_add_interface,
4264 .remove_interface = b43_op_remove_interface,
4265 .config = b43_op_config,
4266 .config_interface = b43_op_config_interface,
4267 .configure_filter = b43_op_configure_filter,
4268 .set_key = b43_op_set_key,
4269 .get_stats = b43_op_get_stats,
4270 .get_tx_stats = b43_op_get_tx_stats,
4271 .start = b43_op_start,
4272 .stop = b43_op_stop,
4273 .set_retry_limit = b43_op_set_retry_limit,
4274 .set_tim = b43_op_beacon_set_tim,
4275 .sta_notify = b43_op_sta_notify,
4276 };
4277
4278 /* Hard-reset the chip. Do not call this directly.
4279 * Use b43_controller_restart()
4280 */
4281 static void b43_chip_reset(struct work_struct *work)
4282 {
4283 struct b43_wldev *dev =
4284 container_of(work, struct b43_wldev, restart_work);
4285 struct b43_wl *wl = dev->wl;
4286 int err = 0;
4287 int prev_status;
4288
4289 mutex_lock(&wl->mutex);
4290
4291 prev_status = b43_status(dev);
4292 /* Bring the device down... */
4293 if (prev_status >= B43_STAT_STARTED)
4294 b43_wireless_core_stop(dev);
4295 if (prev_status >= B43_STAT_INITIALIZED)
4296 b43_wireless_core_exit(dev);
4297
4298 /* ...and up again. */
4299 if (prev_status >= B43_STAT_INITIALIZED) {
4300 err = b43_wireless_core_init(dev);
4301 if (err)
4302 goto out;
4303 }
4304 if (prev_status >= B43_STAT_STARTED) {
4305 err = b43_wireless_core_start(dev);
4306 if (err) {
4307 b43_wireless_core_exit(dev);
4308 goto out;
4309 }
4310 }
4311 out:
4312 if (err)
4313 wl->current_dev = NULL; /* Failed to init the dev. */
4314 mutex_unlock(&wl->mutex);
4315 if (err)
4316 b43err(wl, "Controller restart FAILED\n");
4317 else
4318 b43info(wl, "Controller restarted\n");
4319 }
4320
4321 static int b43_setup_bands(struct b43_wldev *dev,
4322 bool have_2ghz_phy, bool have_5ghz_phy)
4323 {
4324 struct ieee80211_hw *hw = dev->wl->hw;
4325
4326 if (have_2ghz_phy)
4327 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4328 if (dev->phy.type == B43_PHYTYPE_N) {
4329 if (have_5ghz_phy)
4330 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4331 } else {
4332 if (have_5ghz_phy)
4333 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4334 }
4335
4336 dev->phy.supports_2ghz = have_2ghz_phy;
4337 dev->phy.supports_5ghz = have_5ghz_phy;
4338
4339 return 0;
4340 }
4341
4342 static void b43_wireless_core_detach(struct b43_wldev *dev)
4343 {
4344 /* We release firmware that late to not be required to re-request
4345 * is all the time when we reinit the core. */
4346 b43_release_firmware(dev);
4347 b43_phy_free(dev);
4348 }
4349
4350 static int b43_wireless_core_attach(struct b43_wldev *dev)
4351 {
4352 struct b43_wl *wl = dev->wl;
4353 struct ssb_bus *bus = dev->dev->bus;
4354 struct pci_dev *pdev = bus->host_pci;
4355 int err;
4356 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4357 u32 tmp;
4358
4359 /* Do NOT do any device initialization here.
4360 * Do it in wireless_core_init() instead.
4361 * This function is for gathering basic information about the HW, only.
4362 * Also some structs may be set up here. But most likely you want to have
4363 * that in core_init(), too.
4364 */
4365
4366 err = ssb_bus_powerup(bus, 0);
4367 if (err) {
4368 b43err(wl, "Bus powerup failed\n");
4369 goto out;
4370 }
4371 /* Get the PHY type. */
4372 if (dev->dev->id.revision >= 5) {
4373 u32 tmshigh;
4374
4375 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4376 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4377 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4378 } else
4379 B43_WARN_ON(1);
4380
4381 dev->phy.gmode = have_2ghz_phy;
4382 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4383 b43_wireless_core_reset(dev, tmp);
4384
4385 err = b43_phy_versioning(dev);
4386 if (err)
4387 goto err_powerdown;
4388 /* Check if this device supports multiband. */
4389 if (!pdev ||
4390 (pdev->device != 0x4312 &&
4391 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4392 /* No multiband support. */
4393 have_2ghz_phy = 0;
4394 have_5ghz_phy = 0;
4395 switch (dev->phy.type) {
4396 case B43_PHYTYPE_A:
4397 have_5ghz_phy = 1;
4398 break;
4399 case B43_PHYTYPE_G:
4400 case B43_PHYTYPE_N:
4401 have_2ghz_phy = 1;
4402 break;
4403 default:
4404 B43_WARN_ON(1);
4405 }
4406 }
4407 if (dev->phy.type == B43_PHYTYPE_A) {
4408 /* FIXME */
4409 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4410 err = -EOPNOTSUPP;
4411 goto err_powerdown;
4412 }
4413 if (1 /* disable A-PHY */) {
4414 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4415 if (dev->phy.type != B43_PHYTYPE_N) {
4416 have_2ghz_phy = 1;
4417 have_5ghz_phy = 0;
4418 }
4419 }
4420
4421 err = b43_phy_allocate(dev);
4422 if (err)
4423 goto err_powerdown;
4424
4425 dev->phy.gmode = have_2ghz_phy;
4426 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4427 b43_wireless_core_reset(dev, tmp);
4428
4429 err = b43_validate_chipaccess(dev);
4430 if (err)
4431 goto err_phy_free;
4432 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4433 if (err)
4434 goto err_phy_free;
4435
4436 /* Now set some default "current_dev" */
4437 if (!wl->current_dev)
4438 wl->current_dev = dev;
4439 INIT_WORK(&dev->restart_work, b43_chip_reset);
4440
4441 dev->phy.ops->switch_analog(dev, 0);
4442 ssb_device_disable(dev->dev, 0);
4443 ssb_bus_may_powerdown(bus);
4444
4445 out:
4446 return err;
4447
4448 err_phy_free:
4449 b43_phy_free(dev);
4450 err_powerdown:
4451 ssb_bus_may_powerdown(bus);
4452 return err;
4453 }
4454
4455 static void b43_one_core_detach(struct ssb_device *dev)
4456 {
4457 struct b43_wldev *wldev;
4458 struct b43_wl *wl;
4459
4460 /* Do not cancel ieee80211-workqueue based work here.
4461 * See comment in b43_remove(). */
4462
4463 wldev = ssb_get_drvdata(dev);
4464 wl = wldev->wl;
4465 b43_debugfs_remove_device(wldev);
4466 b43_wireless_core_detach(wldev);
4467 list_del(&wldev->list);
4468 wl->nr_devs--;
4469 ssb_set_drvdata(dev, NULL);
4470 kfree(wldev);
4471 }
4472
4473 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4474 {
4475 struct b43_wldev *wldev;
4476 struct pci_dev *pdev;
4477 int err = -ENOMEM;
4478
4479 if (!list_empty(&wl->devlist)) {
4480 /* We are not the first core on this chip. */
4481 pdev = dev->bus->host_pci;
4482 /* Only special chips support more than one wireless
4483 * core, although some of the other chips have more than
4484 * one wireless core as well. Check for this and
4485 * bail out early.
4486 */
4487 if (!pdev ||
4488 ((pdev->device != 0x4321) &&
4489 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4490 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4491 return -ENODEV;
4492 }
4493 }
4494
4495 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4496 if (!wldev)
4497 goto out;
4498
4499 wldev->dev = dev;
4500 wldev->wl = wl;
4501 b43_set_status(wldev, B43_STAT_UNINIT);
4502 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4503 tasklet_init(&wldev->isr_tasklet,
4504 (void (*)(unsigned long))b43_interrupt_tasklet,
4505 (unsigned long)wldev);
4506 INIT_LIST_HEAD(&wldev->list);
4507
4508 err = b43_wireless_core_attach(wldev);
4509 if (err)
4510 goto err_kfree_wldev;
4511
4512 list_add(&wldev->list, &wl->devlist);
4513 wl->nr_devs++;
4514 ssb_set_drvdata(dev, wldev);
4515 b43_debugfs_add_device(wldev);
4516
4517 out:
4518 return err;
4519
4520 err_kfree_wldev:
4521 kfree(wldev);
4522 return err;
4523 }
4524
4525 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4526 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4527 (pdev->device == _device) && \
4528 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4529 (pdev->subsystem_device == _subdevice) )
4530
4531 static void b43_sprom_fixup(struct ssb_bus *bus)
4532 {
4533 struct pci_dev *pdev;
4534
4535 /* boardflags workarounds */
4536 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4537 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4538 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4539 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4540 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4541 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4542 if (bus->bustype == SSB_BUSTYPE_PCI) {
4543 pdev = bus->host_pci;
4544 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4545 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4546 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4547 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4548 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013))
4549 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4550 }
4551 }
4552
4553 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4554 {
4555 struct ieee80211_hw *hw = wl->hw;
4556
4557 ssb_set_devtypedata(dev, NULL);
4558 ieee80211_free_hw(hw);
4559 }
4560
4561 static int b43_wireless_init(struct ssb_device *dev)
4562 {
4563 struct ssb_sprom *sprom = &dev->bus->sprom;
4564 struct ieee80211_hw *hw;
4565 struct b43_wl *wl;
4566 int err = -ENOMEM;
4567
4568 b43_sprom_fixup(dev->bus);
4569
4570 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4571 if (!hw) {
4572 b43err(NULL, "Could not allocate ieee80211 device\n");
4573 goto out;
4574 }
4575
4576 /* fill hw info */
4577 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4578 IEEE80211_HW_SIGNAL_DBM |
4579 IEEE80211_HW_NOISE_DBM;
4580
4581 hw->wiphy->interface_modes =
4582 BIT(NL80211_IFTYPE_AP) |
4583 BIT(NL80211_IFTYPE_MESH_POINT) |
4584 BIT(NL80211_IFTYPE_STATION) |
4585 BIT(NL80211_IFTYPE_WDS) |
4586 BIT(NL80211_IFTYPE_ADHOC);
4587
4588 hw->queues = b43_modparam_qos ? 4 : 1;
4589 SET_IEEE80211_DEV(hw, dev->dev);
4590 if (is_valid_ether_addr(sprom->et1mac))
4591 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4592 else
4593 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4594
4595 /* Get and initialize struct b43_wl */
4596 wl = hw_to_b43_wl(hw);
4597 memset(wl, 0, sizeof(*wl));
4598 wl->hw = hw;
4599 spin_lock_init(&wl->irq_lock);
4600 rwlock_init(&wl->tx_lock);
4601 spin_lock_init(&wl->leds_lock);
4602 spin_lock_init(&wl->shm_lock);
4603 mutex_init(&wl->mutex);
4604 INIT_LIST_HEAD(&wl->devlist);
4605 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4606 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4607
4608 ssb_set_devtypedata(dev, wl);
4609 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4610 err = 0;
4611 out:
4612 return err;
4613 }
4614
4615 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4616 {
4617 struct b43_wl *wl;
4618 int err;
4619 int first = 0;
4620
4621 wl = ssb_get_devtypedata(dev);
4622 if (!wl) {
4623 /* Probing the first core. Must setup common struct b43_wl */
4624 first = 1;
4625 err = b43_wireless_init(dev);
4626 if (err)
4627 goto out;
4628 wl = ssb_get_devtypedata(dev);
4629 B43_WARN_ON(!wl);
4630 }
4631 err = b43_one_core_attach(dev, wl);
4632 if (err)
4633 goto err_wireless_exit;
4634
4635 if (first) {
4636 err = ieee80211_register_hw(wl->hw);
4637 if (err)
4638 goto err_one_core_detach;
4639 }
4640
4641 out:
4642 return err;
4643
4644 err_one_core_detach:
4645 b43_one_core_detach(dev);
4646 err_wireless_exit:
4647 if (first)
4648 b43_wireless_exit(dev, wl);
4649 return err;
4650 }
4651
4652 static void b43_remove(struct ssb_device *dev)
4653 {
4654 struct b43_wl *wl = ssb_get_devtypedata(dev);
4655 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4656
4657 /* We must cancel any work here before unregistering from ieee80211,
4658 * as the ieee80211 unreg will destroy the workqueue. */
4659 cancel_work_sync(&wldev->restart_work);
4660
4661 B43_WARN_ON(!wl);
4662 if (wl->current_dev == wldev)
4663 ieee80211_unregister_hw(wl->hw);
4664
4665 b43_one_core_detach(dev);
4666
4667 if (list_empty(&wl->devlist)) {
4668 /* Last core on the chip unregistered.
4669 * We can destroy common struct b43_wl.
4670 */
4671 b43_wireless_exit(dev, wl);
4672 }
4673 }
4674
4675 /* Perform a hardware reset. This can be called from any context. */
4676 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4677 {
4678 /* Must avoid requeueing, if we are in shutdown. */
4679 if (b43_status(dev) < B43_STAT_INITIALIZED)
4680 return;
4681 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4682 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4683 }
4684
4685 #ifdef CONFIG_PM
4686
4687 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4688 {
4689 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4690 struct b43_wl *wl = wldev->wl;
4691
4692 b43dbg(wl, "Suspending...\n");
4693
4694 mutex_lock(&wl->mutex);
4695 wldev->suspend_in_progress = true;
4696 wldev->suspend_init_status = b43_status(wldev);
4697 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4698 b43_wireless_core_stop(wldev);
4699 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4700 b43_wireless_core_exit(wldev);
4701 mutex_unlock(&wl->mutex);
4702
4703 b43dbg(wl, "Device suspended.\n");
4704
4705 return 0;
4706 }
4707
4708 static int b43_resume(struct ssb_device *dev)
4709 {
4710 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4711 struct b43_wl *wl = wldev->wl;
4712 int err = 0;
4713
4714 b43dbg(wl, "Resuming...\n");
4715
4716 mutex_lock(&wl->mutex);
4717 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4718 err = b43_wireless_core_init(wldev);
4719 if (err) {
4720 b43err(wl, "Resume failed at core init\n");
4721 goto out;
4722 }
4723 }
4724 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4725 err = b43_wireless_core_start(wldev);
4726 if (err) {
4727 b43_leds_exit(wldev);
4728 b43_rng_exit(wldev->wl);
4729 b43_wireless_core_exit(wldev);
4730 b43err(wl, "Resume failed at core start\n");
4731 goto out;
4732 }
4733 }
4734 b43dbg(wl, "Device resumed.\n");
4735 out:
4736 wldev->suspend_in_progress = false;
4737 mutex_unlock(&wl->mutex);
4738 return err;
4739 }
4740
4741 #else /* CONFIG_PM */
4742 # define b43_suspend NULL
4743 # define b43_resume NULL
4744 #endif /* CONFIG_PM */
4745
4746 static struct ssb_driver b43_ssb_driver = {
4747 .name = KBUILD_MODNAME,
4748 .id_table = b43_ssb_tbl,
4749 .probe = b43_probe,
4750 .remove = b43_remove,
4751 .suspend = b43_suspend,
4752 .resume = b43_resume,
4753 };
4754
4755 static void b43_print_driverinfo(void)
4756 {
4757 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4758 *feat_leds = "", *feat_rfkill = "";
4759
4760 #ifdef CONFIG_B43_PCI_AUTOSELECT
4761 feat_pci = "P";
4762 #endif
4763 #ifdef CONFIG_B43_PCMCIA
4764 feat_pcmcia = "M";
4765 #endif
4766 #ifdef CONFIG_B43_NPHY
4767 feat_nphy = "N";
4768 #endif
4769 #ifdef CONFIG_B43_LEDS
4770 feat_leds = "L";
4771 #endif
4772 #ifdef CONFIG_B43_RFKILL
4773 feat_rfkill = "R";
4774 #endif
4775 printk(KERN_INFO "Broadcom 43xx driver loaded "
4776 "[ Features: %s%s%s%s%s, Firmware-ID: "
4777 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4778 feat_pci, feat_pcmcia, feat_nphy,
4779 feat_leds, feat_rfkill);
4780 }
4781
4782 static int __init b43_init(void)
4783 {
4784 int err;
4785
4786 b43_debugfs_init();
4787 err = b43_pcmcia_init();
4788 if (err)
4789 goto err_dfs_exit;
4790 err = ssb_driver_register(&b43_ssb_driver);
4791 if (err)
4792 goto err_pcmcia_exit;
4793 b43_print_driverinfo();
4794
4795 return err;
4796
4797 err_pcmcia_exit:
4798 b43_pcmcia_exit();
4799 err_dfs_exit:
4800 b43_debugfs_exit();
4801 return err;
4802 }
4803
4804 static void __exit b43_exit(void)
4805 {
4806 ssb_driver_unregister(&b43_ssb_driver);
4807 b43_pcmcia_exit();
4808 b43_debugfs_exit();
4809 }
4810
4811 module_init(b43_init)
4812 module_exit(b43_exit)
Linux kernel - Deliverables
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