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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireles...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / b43 / main.c
blob9d2eb273b726da910293bc9cac0ff811169a32a5
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 Some parts of the code in this file are derived from the ipw2200
12 driver Copyright(c) 2003 - 2004 Intel Corporation.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; see the file COPYING. If not, write to
26 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
27 Boston, MA 02110-1301, USA.
28
29 */
30
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/moduleparam.h>
34 #include <linux/if_arp.h>
35 #include <linux/etherdevice.h>
36 #include <linux/version.h>
37 #include <linux/firmware.h>
38 #include <linux/wireless.h>
39 #include <linux/workqueue.h>
40 #include <linux/skbuff.h>
41 #include <linux/io.h>
42 #include <linux/dma-mapping.h>
43 #include <asm/unaligned.h>
44
45 #include "b43.h"
46 #include "main.h"
47 #include "debugfs.h"
48 #include "phy.h"
49 #include "nphy.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 /* Turn the Analog ON/OFF */
1056 static void b43_switch_analog(struct b43_wldev *dev, int on)
1057 {
1058 switch (dev->phy.type) {
1059 case B43_PHYTYPE_A:
1060 case B43_PHYTYPE_G:
1061 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
1062 break;
1063 case B43_PHYTYPE_N:
1064 b43_phy_write(dev, B43_NPHY_AFECTL_OVER,
1065 on ? 0 : 0x7FFF);
1066 break;
1067 default:
1068 B43_WARN_ON(1);
1069 }
1070 }
1071
1072 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1073 {
1074 u32 tmslow;
1075 u32 macctl;
1076
1077 flags |= B43_TMSLOW_PHYCLKEN;
1078 flags |= B43_TMSLOW_PHYRESET;
1079 ssb_device_enable(dev->dev, flags);
1080 msleep(2); /* Wait for the PLL to turn on. */
1081
1082 /* Now take the PHY out of Reset again */
1083 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1084 tmslow |= SSB_TMSLOW_FGC;
1085 tmslow &= ~B43_TMSLOW_PHYRESET;
1086 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1087 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1088 msleep(1);
1089 tmslow &= ~SSB_TMSLOW_FGC;
1090 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1091 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1092 msleep(1);
1093
1094 /* Turn Analog ON */
1095 b43_switch_analog(dev, 1);
1096
1097 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1098 macctl &= ~B43_MACCTL_GMODE;
1099 if (flags & B43_TMSLOW_GMODE)
1100 macctl |= B43_MACCTL_GMODE;
1101 macctl |= B43_MACCTL_IHR_ENABLED;
1102 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1103 }
1104
1105 static void handle_irq_transmit_status(struct b43_wldev *dev)
1106 {
1107 u32 v0, v1;
1108 u16 tmp;
1109 struct b43_txstatus stat;
1110
1111 while (1) {
1112 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1113 if (!(v0 & 0x00000001))
1114 break;
1115 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1116
1117 stat.cookie = (v0 >> 16);
1118 stat.seq = (v1 & 0x0000FFFF);
1119 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1120 tmp = (v0 & 0x0000FFFF);
1121 stat.frame_count = ((tmp & 0xF000) >> 12);
1122 stat.rts_count = ((tmp & 0x0F00) >> 8);
1123 stat.supp_reason = ((tmp & 0x001C) >> 2);
1124 stat.pm_indicated = !!(tmp & 0x0080);
1125 stat.intermediate = !!(tmp & 0x0040);
1126 stat.for_ampdu = !!(tmp & 0x0020);
1127 stat.acked = !!(tmp & 0x0002);
1128
1129 b43_handle_txstatus(dev, &stat);
1130 }
1131 }
1132
1133 static void drain_txstatus_queue(struct b43_wldev *dev)
1134 {
1135 u32 dummy;
1136
1137 if (dev->dev->id.revision < 5)
1138 return;
1139 /* Read all entries from the microcode TXstatus FIFO
1140 * and throw them away.
1141 */
1142 while (1) {
1143 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1144 if (!(dummy & 0x00000001))
1145 break;
1146 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1147 }
1148 }
1149
1150 static u32 b43_jssi_read(struct b43_wldev *dev)
1151 {
1152 u32 val = 0;
1153
1154 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1155 val <<= 16;
1156 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1157
1158 return val;
1159 }
1160
1161 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1162 {
1163 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1164 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1165 }
1166
1167 static void b43_generate_noise_sample(struct b43_wldev *dev)
1168 {
1169 b43_jssi_write(dev, 0x7F7F7F7F);
1170 b43_write32(dev, B43_MMIO_MACCMD,
1171 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1172 }
1173
1174 static void b43_calculate_link_quality(struct b43_wldev *dev)
1175 {
1176 /* Top half of Link Quality calculation. */
1177
1178 if (dev->noisecalc.calculation_running)
1179 return;
1180 dev->noisecalc.calculation_running = 1;
1181 dev->noisecalc.nr_samples = 0;
1182
1183 b43_generate_noise_sample(dev);
1184 }
1185
1186 static void handle_irq_noise(struct b43_wldev *dev)
1187 {
1188 struct b43_phy *phy = &dev->phy;
1189 u16 tmp;
1190 u8 noise[4];
1191 u8 i, j;
1192 s32 average;
1193
1194 /* Bottom half of Link Quality calculation. */
1195
1196 /* Possible race condition: It might be possible that the user
1197 * changed to a different channel in the meantime since we
1198 * started the calculation. We ignore that fact, since it's
1199 * not really that much of a problem. The background noise is
1200 * an estimation only anyway. Slightly wrong results will get damped
1201 * by the averaging of the 8 sample rounds. Additionally the
1202 * value is shortlived. So it will be replaced by the next noise
1203 * calculation round soon. */
1204
1205 B43_WARN_ON(!dev->noisecalc.calculation_running);
1206 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1207 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1208 noise[2] == 0x7F || noise[3] == 0x7F)
1209 goto generate_new;
1210
1211 /* Get the noise samples. */
1212 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1213 i = dev->noisecalc.nr_samples;
1214 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1215 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1216 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1217 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1218 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1219 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1220 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1221 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1222 dev->noisecalc.nr_samples++;
1223 if (dev->noisecalc.nr_samples == 8) {
1224 /* Calculate the Link Quality by the noise samples. */
1225 average = 0;
1226 for (i = 0; i < 8; i++) {
1227 for (j = 0; j < 4; j++)
1228 average += dev->noisecalc.samples[i][j];
1229 }
1230 average /= (8 * 4);
1231 average *= 125;
1232 average += 64;
1233 average /= 128;
1234 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1235 tmp = (tmp / 128) & 0x1F;
1236 if (tmp >= 8)
1237 average += 2;
1238 else
1239 average -= 25;
1240 if (tmp == 8)
1241 average -= 72;
1242 else
1243 average -= 48;
1244
1245 dev->stats.link_noise = average;
1246 dev->noisecalc.calculation_running = 0;
1247 return;
1248 }
1249 generate_new:
1250 b43_generate_noise_sample(dev);
1251 }
1252
1253 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1254 {
1255 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1256 ///TODO: PS TBTT
1257 } else {
1258 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1259 b43_power_saving_ctl_bits(dev, 0);
1260 }
1261 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1262 dev->dfq_valid = 1;
1263 }
1264
1265 static void handle_irq_atim_end(struct b43_wldev *dev)
1266 {
1267 if (dev->dfq_valid) {
1268 b43_write32(dev, B43_MMIO_MACCMD,
1269 b43_read32(dev, B43_MMIO_MACCMD)
1270 | B43_MACCMD_DFQ_VALID);
1271 dev->dfq_valid = 0;
1272 }
1273 }
1274
1275 static void handle_irq_pmq(struct b43_wldev *dev)
1276 {
1277 u32 tmp;
1278
1279 //TODO: AP mode.
1280
1281 while (1) {
1282 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1283 if (!(tmp & 0x00000008))
1284 break;
1285 }
1286 /* 16bit write is odd, but correct. */
1287 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1288 }
1289
1290 static void b43_write_template_common(struct b43_wldev *dev,
1291 const u8 * data, u16 size,
1292 u16 ram_offset,
1293 u16 shm_size_offset, u8 rate)
1294 {
1295 u32 i, tmp;
1296 struct b43_plcp_hdr4 plcp;
1297
1298 plcp.data = 0;
1299 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1300 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1301 ram_offset += sizeof(u32);
1302 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1303 * So leave the first two bytes of the next write blank.
1304 */
1305 tmp = (u32) (data[0]) << 16;
1306 tmp |= (u32) (data[1]) << 24;
1307 b43_ram_write(dev, ram_offset, tmp);
1308 ram_offset += sizeof(u32);
1309 for (i = 2; i < size; i += sizeof(u32)) {
1310 tmp = (u32) (data[i + 0]);
1311 if (i + 1 < size)
1312 tmp |= (u32) (data[i + 1]) << 8;
1313 if (i + 2 < size)
1314 tmp |= (u32) (data[i + 2]) << 16;
1315 if (i + 3 < size)
1316 tmp |= (u32) (data[i + 3]) << 24;
1317 b43_ram_write(dev, ram_offset + i - 2, tmp);
1318 }
1319 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1320 size + sizeof(struct b43_plcp_hdr6));
1321 }
1322
1323 /* Check if the use of the antenna that ieee80211 told us to
1324 * use is possible. This will fall back to DEFAULT.
1325 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1326 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1327 u8 antenna_nr)
1328 {
1329 u8 antenna_mask;
1330
1331 if (antenna_nr == 0) {
1332 /* Zero means "use default antenna". That's always OK. */
1333 return 0;
1334 }
1335
1336 /* Get the mask of available antennas. */
1337 if (dev->phy.gmode)
1338 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1339 else
1340 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1341
1342 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1343 /* This antenna is not available. Fall back to default. */
1344 return 0;
1345 }
1346
1347 return antenna_nr;
1348 }
1349
1350 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
1351 {
1352 antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
1353 switch (antenna) {
1354 case 0: /* default/diversity */
1355 return B43_ANTENNA_DEFAULT;
1356 case 1: /* Antenna 0 */
1357 return B43_ANTENNA0;
1358 case 2: /* Antenna 1 */
1359 return B43_ANTENNA1;
1360 case 3: /* Antenna 2 */
1361 return B43_ANTENNA2;
1362 case 4: /* Antenna 3 */
1363 return B43_ANTENNA3;
1364 default:
1365 return B43_ANTENNA_DEFAULT;
1366 }
1367 }
1368
1369 /* Convert a b43 antenna number value to the PHY TX control value. */
1370 static u16 b43_antenna_to_phyctl(int antenna)
1371 {
1372 switch (antenna) {
1373 case B43_ANTENNA0:
1374 return B43_TXH_PHY_ANT0;
1375 case B43_ANTENNA1:
1376 return B43_TXH_PHY_ANT1;
1377 case B43_ANTENNA2:
1378 return B43_TXH_PHY_ANT2;
1379 case B43_ANTENNA3:
1380 return B43_TXH_PHY_ANT3;
1381 case B43_ANTENNA_AUTO:
1382 return B43_TXH_PHY_ANT01AUTO;
1383 }
1384 B43_WARN_ON(1);
1385 return 0;
1386 }
1387
1388 static void b43_write_beacon_template(struct b43_wldev *dev,
1389 u16 ram_offset,
1390 u16 shm_size_offset)
1391 {
1392 unsigned int i, len, variable_len;
1393 const struct ieee80211_mgmt *bcn;
1394 const u8 *ie;
1395 bool tim_found = 0;
1396 unsigned int rate;
1397 u16 ctl;
1398 int antenna;
1399 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1400
1401 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1402 len = min((size_t) dev->wl->current_beacon->len,
1403 0x200 - sizeof(struct b43_plcp_hdr6));
1404 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1405
1406 b43_write_template_common(dev, (const u8 *)bcn,
1407 len, ram_offset, shm_size_offset, rate);
1408
1409 /* Write the PHY TX control parameters. */
1410 antenna = b43_antenna_from_ieee80211(dev, info->antenna_sel_tx);
1411 antenna = b43_antenna_to_phyctl(antenna);
1412 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1413 /* We can't send beacons with short preamble. Would get PHY errors. */
1414 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1415 ctl &= ~B43_TXH_PHY_ANT;
1416 ctl &= ~B43_TXH_PHY_ENC;
1417 ctl |= antenna;
1418 if (b43_is_cck_rate(rate))
1419 ctl |= B43_TXH_PHY_ENC_CCK;
1420 else
1421 ctl |= B43_TXH_PHY_ENC_OFDM;
1422 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1423
1424 /* Find the position of the TIM and the DTIM_period value
1425 * and write them to SHM. */
1426 ie = bcn->u.beacon.variable;
1427 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1428 for (i = 0; i < variable_len - 2; ) {
1429 uint8_t ie_id, ie_len;
1430
1431 ie_id = ie[i];
1432 ie_len = ie[i + 1];
1433 if (ie_id == 5) {
1434 u16 tim_position;
1435 u16 dtim_period;
1436 /* This is the TIM Information Element */
1437
1438 /* Check whether the ie_len is in the beacon data range. */
1439 if (variable_len < ie_len + 2 + i)
1440 break;
1441 /* A valid TIM is at least 4 bytes long. */
1442 if (ie_len < 4)
1443 break;
1444 tim_found = 1;
1445
1446 tim_position = sizeof(struct b43_plcp_hdr6);
1447 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1448 tim_position += i;
1449
1450 dtim_period = ie[i + 3];
1451
1452 b43_shm_write16(dev, B43_SHM_SHARED,
1453 B43_SHM_SH_TIMBPOS, tim_position);
1454 b43_shm_write16(dev, B43_SHM_SHARED,
1455 B43_SHM_SH_DTIMPER, dtim_period);
1456 break;
1457 }
1458 i += ie_len + 2;
1459 }
1460 if (!tim_found) {
1461 /*
1462 * If ucode wants to modify TIM do it behind the beacon, this
1463 * will happen, for example, when doing mesh networking.
1464 */
1465 b43_shm_write16(dev, B43_SHM_SHARED,
1466 B43_SHM_SH_TIMBPOS,
1467 len + sizeof(struct b43_plcp_hdr6));
1468 b43_shm_write16(dev, B43_SHM_SHARED,
1469 B43_SHM_SH_DTIMPER, 0);
1470 }
1471 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1472 }
1473
1474 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1475 u16 shm_offset, u16 size,
1476 struct ieee80211_rate *rate)
1477 {
1478 struct b43_plcp_hdr4 plcp;
1479 u32 tmp;
1480 __le16 dur;
1481
1482 plcp.data = 0;
1483 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1484 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1485 dev->wl->vif, size,
1486 rate);
1487 /* Write PLCP in two parts and timing for packet transfer */
1488 tmp = le32_to_cpu(plcp.data);
1489 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1490 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1491 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1492 }
1493
1494 /* Instead of using custom probe response template, this function
1495 * just patches custom beacon template by:
1496 * 1) Changing packet type
1497 * 2) Patching duration field
1498 * 3) Stripping TIM
1499 */
1500 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1501 u16 *dest_size,
1502 struct ieee80211_rate *rate)
1503 {
1504 const u8 *src_data;
1505 u8 *dest_data;
1506 u16 src_size, elem_size, src_pos, dest_pos;
1507 __le16 dur;
1508 struct ieee80211_hdr *hdr;
1509 size_t ie_start;
1510
1511 src_size = dev->wl->current_beacon->len;
1512 src_data = (const u8 *)dev->wl->current_beacon->data;
1513
1514 /* Get the start offset of the variable IEs in the packet. */
1515 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1516 B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1517
1518 if (B43_WARN_ON(src_size < ie_start))
1519 return NULL;
1520
1521 dest_data = kmalloc(src_size, GFP_ATOMIC);
1522 if (unlikely(!dest_data))
1523 return NULL;
1524
1525 /* Copy the static data and all Information Elements, except the TIM. */
1526 memcpy(dest_data, src_data, ie_start);
1527 src_pos = ie_start;
1528 dest_pos = ie_start;
1529 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1530 elem_size = src_data[src_pos + 1] + 2;
1531 if (src_data[src_pos] == 5) {
1532 /* This is the TIM. */
1533 continue;
1534 }
1535 memcpy(dest_data + dest_pos, src_data + src_pos,
1536 elem_size);
1537 dest_pos += elem_size;
1538 }
1539 *dest_size = dest_pos;
1540 hdr = (struct ieee80211_hdr *)dest_data;
1541
1542 /* Set the frame control. */
1543 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1544 IEEE80211_STYPE_PROBE_RESP);
1545 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1546 dev->wl->vif, *dest_size,
1547 rate);
1548 hdr->duration_id = dur;
1549
1550 return dest_data;
1551 }
1552
1553 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1554 u16 ram_offset,
1555 u16 shm_size_offset,
1556 struct ieee80211_rate *rate)
1557 {
1558 const u8 *probe_resp_data;
1559 u16 size;
1560
1561 size = dev->wl->current_beacon->len;
1562 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1563 if (unlikely(!probe_resp_data))
1564 return;
1565
1566 /* Looks like PLCP headers plus packet timings are stored for
1567 * all possible basic rates
1568 */
1569 b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1570 b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1571 b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1572 b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1573
1574 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1575 b43_write_template_common(dev, probe_resp_data,
1576 size, ram_offset, shm_size_offset,
1577 rate->hw_value);
1578 kfree(probe_resp_data);
1579 }
1580
1581 static void b43_upload_beacon0(struct b43_wldev *dev)
1582 {
1583 struct b43_wl *wl = dev->wl;
1584
1585 if (wl->beacon0_uploaded)
1586 return;
1587 b43_write_beacon_template(dev, 0x68, 0x18);
1588 /* FIXME: Probe resp upload doesn't really belong here,
1589 * but we don't use that feature anyway. */
1590 b43_write_probe_resp_template(dev, 0x268, 0x4A,
1591 &__b43_ratetable[3]);
1592 wl->beacon0_uploaded = 1;
1593 }
1594
1595 static void b43_upload_beacon1(struct b43_wldev *dev)
1596 {
1597 struct b43_wl *wl = dev->wl;
1598
1599 if (wl->beacon1_uploaded)
1600 return;
1601 b43_write_beacon_template(dev, 0x468, 0x1A);
1602 wl->beacon1_uploaded = 1;
1603 }
1604
1605 static void handle_irq_beacon(struct b43_wldev *dev)
1606 {
1607 struct b43_wl *wl = dev->wl;
1608 u32 cmd, beacon0_valid, beacon1_valid;
1609
1610 if (!b43_is_mode(wl, IEEE80211_IF_TYPE_AP) &&
1611 !b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT))
1612 return;
1613
1614 /* This is the bottom half of the asynchronous beacon update. */
1615
1616 /* Ignore interrupt in the future. */
1617 dev->irq_savedstate &= ~B43_IRQ_BEACON;
1618
1619 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1620 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1621 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1622
1623 /* Schedule interrupt manually, if busy. */
1624 if (beacon0_valid && beacon1_valid) {
1625 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1626 dev->irq_savedstate |= B43_IRQ_BEACON;
1627 return;
1628 }
1629
1630 if (unlikely(wl->beacon_templates_virgin)) {
1631 /* We never uploaded a beacon before.
1632 * Upload both templates now, but only mark one valid. */
1633 wl->beacon_templates_virgin = 0;
1634 b43_upload_beacon0(dev);
1635 b43_upload_beacon1(dev);
1636 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1637 cmd |= B43_MACCMD_BEACON0_VALID;
1638 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1639 } else {
1640 if (!beacon0_valid) {
1641 b43_upload_beacon0(dev);
1642 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1643 cmd |= B43_MACCMD_BEACON0_VALID;
1644 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1645 } else if (!beacon1_valid) {
1646 b43_upload_beacon1(dev);
1647 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1648 cmd |= B43_MACCMD_BEACON1_VALID;
1649 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1650 }
1651 }
1652 }
1653
1654 static void b43_beacon_update_trigger_work(struct work_struct *work)
1655 {
1656 struct b43_wl *wl = container_of(work, struct b43_wl,
1657 beacon_update_trigger);
1658 struct b43_wldev *dev;
1659
1660 mutex_lock(&wl->mutex);
1661 dev = wl->current_dev;
1662 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1663 spin_lock_irq(&wl->irq_lock);
1664 /* update beacon right away or defer to irq */
1665 dev->irq_savedstate = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1666 handle_irq_beacon(dev);
1667 /* The handler might have updated the IRQ mask. */
1668 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK,
1669 dev->irq_savedstate);
1670 mmiowb();
1671 spin_unlock_irq(&wl->irq_lock);
1672 }
1673 mutex_unlock(&wl->mutex);
1674 }
1675
1676 /* Asynchronously update the packet templates in template RAM.
1677 * Locking: Requires wl->irq_lock to be locked. */
1678 static void b43_update_templates(struct b43_wl *wl, struct sk_buff *beacon)
1679 {
1680 /* This is the top half of the ansynchronous beacon update.
1681 * The bottom half is the beacon IRQ.
1682 * Beacon update must be asynchronous to avoid sending an
1683 * invalid beacon. This can happen for example, if the firmware
1684 * transmits a beacon while we are updating it. */
1685
1686 if (wl->current_beacon)
1687 dev_kfree_skb_any(wl->current_beacon);
1688 wl->current_beacon = beacon;
1689 wl->beacon0_uploaded = 0;
1690 wl->beacon1_uploaded = 0;
1691 queue_work(wl->hw->workqueue, &wl->beacon_update_trigger);
1692 }
1693
1694 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1695 {
1696 u32 tmp;
1697 u16 i, len;
1698
1699 len = min((u16) ssid_len, (u16) 0x100);
1700 for (i = 0; i < len; i += sizeof(u32)) {
1701 tmp = (u32) (ssid[i + 0]);
1702 if (i + 1 < len)
1703 tmp |= (u32) (ssid[i + 1]) << 8;
1704 if (i + 2 < len)
1705 tmp |= (u32) (ssid[i + 2]) << 16;
1706 if (i + 3 < len)
1707 tmp |= (u32) (ssid[i + 3]) << 24;
1708 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1709 }
1710 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1711 }
1712
1713 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1714 {
1715 b43_time_lock(dev);
1716 if (dev->dev->id.revision >= 3) {
1717 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1718 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1719 } else {
1720 b43_write16(dev, 0x606, (beacon_int >> 6));
1721 b43_write16(dev, 0x610, beacon_int);
1722 }
1723 b43_time_unlock(dev);
1724 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1725 }
1726
1727 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1728 {
1729 u16 reason;
1730
1731 /* Read the register that contains the reason code for the panic. */
1732 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1733 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1734
1735 switch (reason) {
1736 default:
1737 b43dbg(dev->wl, "The panic reason is unknown.\n");
1738 /* fallthrough */
1739 case B43_FWPANIC_DIE:
1740 /* Do not restart the controller or firmware.
1741 * The device is nonfunctional from now on.
1742 * Restarting would result in this panic to trigger again,
1743 * so we avoid that recursion. */
1744 break;
1745 case B43_FWPANIC_RESTART:
1746 b43_controller_restart(dev, "Microcode panic");
1747 break;
1748 }
1749 }
1750
1751 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1752 {
1753 unsigned int i, cnt;
1754 u16 reason, marker_id, marker_line;
1755 __le16 *buf;
1756
1757 /* The proprietary firmware doesn't have this IRQ. */
1758 if (!dev->fw.opensource)
1759 return;
1760
1761 /* Read the register that contains the reason code for this IRQ. */
1762 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1763
1764 switch (reason) {
1765 case B43_DEBUGIRQ_PANIC:
1766 b43_handle_firmware_panic(dev);
1767 break;
1768 case B43_DEBUGIRQ_DUMP_SHM:
1769 if (!B43_DEBUG)
1770 break; /* Only with driver debugging enabled. */
1771 buf = kmalloc(4096, GFP_ATOMIC);
1772 if (!buf) {
1773 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1774 goto out;
1775 }
1776 for (i = 0; i < 4096; i += 2) {
1777 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1778 buf[i / 2] = cpu_to_le16(tmp);
1779 }
1780 b43info(dev->wl, "Shared memory dump:\n");
1781 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1782 16, 2, buf, 4096, 1);
1783 kfree(buf);
1784 break;
1785 case B43_DEBUGIRQ_DUMP_REGS:
1786 if (!B43_DEBUG)
1787 break; /* Only with driver debugging enabled. */
1788 b43info(dev->wl, "Microcode register dump:\n");
1789 for (i = 0, cnt = 0; i < 64; i++) {
1790 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1791 if (cnt == 0)
1792 printk(KERN_INFO);
1793 printk("r%02u: 0x%04X ", i, tmp);
1794 cnt++;
1795 if (cnt == 6) {
1796 printk("\n");
1797 cnt = 0;
1798 }
1799 }
1800 printk("\n");
1801 break;
1802 case B43_DEBUGIRQ_MARKER:
1803 if (!B43_DEBUG)
1804 break; /* Only with driver debugging enabled. */
1805 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1806 B43_MARKER_ID_REG);
1807 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1808 B43_MARKER_LINE_REG);
1809 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1810 "at line number %u\n",
1811 marker_id, marker_line);
1812 break;
1813 default:
1814 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1815 reason);
1816 }
1817 out:
1818 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1819 b43_shm_write16(dev, B43_SHM_SCRATCH,
1820 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1821 }
1822
1823 /* Interrupt handler bottom-half */
1824 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1825 {
1826 u32 reason;
1827 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1828 u32 merged_dma_reason = 0;
1829 int i;
1830 unsigned long flags;
1831
1832 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1833
1834 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1835
1836 reason = dev->irq_reason;
1837 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1838 dma_reason[i] = dev->dma_reason[i];
1839 merged_dma_reason |= dma_reason[i];
1840 }
1841
1842 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1843 b43err(dev->wl, "MAC transmission error\n");
1844
1845 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1846 b43err(dev->wl, "PHY transmission error\n");
1847 rmb();
1848 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1849 atomic_set(&dev->phy.txerr_cnt,
1850 B43_PHY_TX_BADNESS_LIMIT);
1851 b43err(dev->wl, "Too many PHY TX errors, "
1852 "restarting the controller\n");
1853 b43_controller_restart(dev, "PHY TX errors");
1854 }
1855 }
1856
1857 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1858 B43_DMAIRQ_NONFATALMASK))) {
1859 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1860 b43err(dev->wl, "Fatal DMA error: "
1861 "0x%08X, 0x%08X, 0x%08X, "
1862 "0x%08X, 0x%08X, 0x%08X\n",
1863 dma_reason[0], dma_reason[1],
1864 dma_reason[2], dma_reason[3],
1865 dma_reason[4], dma_reason[5]);
1866 b43_controller_restart(dev, "DMA error");
1867 mmiowb();
1868 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1869 return;
1870 }
1871 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1872 b43err(dev->wl, "DMA error: "
1873 "0x%08X, 0x%08X, 0x%08X, "
1874 "0x%08X, 0x%08X, 0x%08X\n",
1875 dma_reason[0], dma_reason[1],
1876 dma_reason[2], dma_reason[3],
1877 dma_reason[4], dma_reason[5]);
1878 }
1879 }
1880
1881 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1882 handle_irq_ucode_debug(dev);
1883 if (reason & B43_IRQ_TBTT_INDI)
1884 handle_irq_tbtt_indication(dev);
1885 if (reason & B43_IRQ_ATIM_END)
1886 handle_irq_atim_end(dev);
1887 if (reason & B43_IRQ_BEACON)
1888 handle_irq_beacon(dev);
1889 if (reason & B43_IRQ_PMQ)
1890 handle_irq_pmq(dev);
1891 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1892 ;/* TODO */
1893 if (reason & B43_IRQ_NOISESAMPLE_OK)
1894 handle_irq_noise(dev);
1895
1896 /* Check the DMA reason registers for received data. */
1897 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1898 if (b43_using_pio_transfers(dev))
1899 b43_pio_rx(dev->pio.rx_queue);
1900 else
1901 b43_dma_rx(dev->dma.rx_ring);
1902 }
1903 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1904 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1905 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1906 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1907 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1908
1909 if (reason & B43_IRQ_TX_OK)
1910 handle_irq_transmit_status(dev);
1911
1912 b43_interrupt_enable(dev, dev->irq_savedstate);
1913 mmiowb();
1914 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1915 }
1916
1917 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1918 {
1919 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1920
1921 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1922 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1923 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1924 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1925 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1926 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1927 }
1928
1929 /* Interrupt handler top-half */
1930 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1931 {
1932 irqreturn_t ret = IRQ_NONE;
1933 struct b43_wldev *dev = dev_id;
1934 u32 reason;
1935
1936 if (!dev)
1937 return IRQ_NONE;
1938
1939 spin_lock(&dev->wl->irq_lock);
1940
1941 if (b43_status(dev) < B43_STAT_STARTED)
1942 goto out;
1943 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1944 if (reason == 0xffffffff) /* shared IRQ */
1945 goto out;
1946 ret = IRQ_HANDLED;
1947 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1948 if (!reason)
1949 goto out;
1950
1951 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1952 & 0x0001DC00;
1953 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1954 & 0x0000DC00;
1955 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1956 & 0x0000DC00;
1957 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1958 & 0x0001DC00;
1959 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1960 & 0x0000DC00;
1961 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1962 & 0x0000DC00;
1963
1964 b43_interrupt_ack(dev, reason);
1965 /* disable all IRQs. They are enabled again in the bottom half. */
1966 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1967 /* save the reason code and call our bottom half. */
1968 dev->irq_reason = reason;
1969 tasklet_schedule(&dev->isr_tasklet);
1970 out:
1971 mmiowb();
1972 spin_unlock(&dev->wl->irq_lock);
1973
1974 return ret;
1975 }
1976
1977 static void do_release_fw(struct b43_firmware_file *fw)
1978 {
1979 release_firmware(fw->data);
1980 fw->data = NULL;
1981 fw->filename = NULL;
1982 }
1983
1984 static void b43_release_firmware(struct b43_wldev *dev)
1985 {
1986 do_release_fw(&dev->fw.ucode);
1987 do_release_fw(&dev->fw.pcm);
1988 do_release_fw(&dev->fw.initvals);
1989 do_release_fw(&dev->fw.initvals_band);
1990 }
1991
1992 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1993 {
1994 const char *text;
1995
1996 text = "You must go to "
1997 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1998 "and download the latest firmware (version 4).\n";
1999 if (error)
2000 b43err(wl, text);
2001 else
2002 b43warn(wl, text);
2003 }
2004
2005 static int do_request_fw(struct b43_wldev *dev,
2006 const char *name,
2007 struct b43_firmware_file *fw,
2008 bool silent)
2009 {
2010 char path[sizeof(modparam_fwpostfix) + 32];
2011 const struct firmware *blob;
2012 struct b43_fw_header *hdr;
2013 u32 size;
2014 int err;
2015
2016 if (!name) {
2017 /* Don't fetch anything. Free possibly cached firmware. */
2018 do_release_fw(fw);
2019 return 0;
2020 }
2021 if (fw->filename) {
2022 if (strcmp(fw->filename, name) == 0)
2023 return 0; /* Already have this fw. */
2024 /* Free the cached firmware first. */
2025 do_release_fw(fw);
2026 }
2027
2028 snprintf(path, ARRAY_SIZE(path),
2029 "b43%s/%s.fw",
2030 modparam_fwpostfix, name);
2031 err = request_firmware(&blob, path, dev->dev->dev);
2032 if (err == -ENOENT) {
2033 if (!silent) {
2034 b43err(dev->wl, "Firmware file \"%s\" not found\n",
2035 path);
2036 }
2037 return err;
2038 } else if (err) {
2039 b43err(dev->wl, "Firmware file \"%s\" request failed (err=%d)\n",
2040 path, err);
2041 return err;
2042 }
2043 if (blob->size < sizeof(struct b43_fw_header))
2044 goto err_format;
2045 hdr = (struct b43_fw_header *)(blob->data);
2046 switch (hdr->type) {
2047 case B43_FW_TYPE_UCODE:
2048 case B43_FW_TYPE_PCM:
2049 size = be32_to_cpu(hdr->size);
2050 if (size != blob->size - sizeof(struct b43_fw_header))
2051 goto err_format;
2052 /* fallthrough */
2053 case B43_FW_TYPE_IV:
2054 if (hdr->ver != 1)
2055 goto err_format;
2056 break;
2057 default:
2058 goto err_format;
2059 }
2060
2061 fw->data = blob;
2062 fw->filename = name;
2063
2064 return 0;
2065
2066 err_format:
2067 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
2068 release_firmware(blob);
2069
2070 return -EPROTO;
2071 }
2072
2073 static int b43_request_firmware(struct b43_wldev *dev)
2074 {
2075 struct b43_firmware *fw = &dev->fw;
2076 const u8 rev = dev->dev->id.revision;
2077 const char *filename;
2078 u32 tmshigh;
2079 int err;
2080
2081 /* Get microcode */
2082 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2083 if ((rev >= 5) && (rev <= 10))
2084 filename = "ucode5";
2085 else if ((rev >= 11) && (rev <= 12))
2086 filename = "ucode11";
2087 else if (rev >= 13)
2088 filename = "ucode13";
2089 else
2090 goto err_no_ucode;
2091 err = do_request_fw(dev, filename, &fw->ucode, 0);
2092 if (err)
2093 goto err_load;
2094
2095 /* Get PCM code */
2096 if ((rev >= 5) && (rev <= 10))
2097 filename = "pcm5";
2098 else if (rev >= 11)
2099 filename = NULL;
2100 else
2101 goto err_no_pcm;
2102 fw->pcm_request_failed = 0;
2103 err = do_request_fw(dev, filename, &fw->pcm, 1);
2104 if (err == -ENOENT) {
2105 /* We did not find a PCM file? Not fatal, but
2106 * core rev <= 10 must do without hwcrypto then. */
2107 fw->pcm_request_failed = 1;
2108 } else if (err)
2109 goto err_load;
2110
2111 /* Get initvals */
2112 switch (dev->phy.type) {
2113 case B43_PHYTYPE_A:
2114 if ((rev >= 5) && (rev <= 10)) {
2115 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2116 filename = "a0g1initvals5";
2117 else
2118 filename = "a0g0initvals5";
2119 } else
2120 goto err_no_initvals;
2121 break;
2122 case B43_PHYTYPE_G:
2123 if ((rev >= 5) && (rev <= 10))
2124 filename = "b0g0initvals5";
2125 else if (rev >= 13)
2126 filename = "b0g0initvals13";
2127 else
2128 goto err_no_initvals;
2129 break;
2130 case B43_PHYTYPE_N:
2131 if ((rev >= 11) && (rev <= 12))
2132 filename = "n0initvals11";
2133 else
2134 goto err_no_initvals;
2135 break;
2136 default:
2137 goto err_no_initvals;
2138 }
2139 err = do_request_fw(dev, filename, &fw->initvals, 0);
2140 if (err)
2141 goto err_load;
2142
2143 /* Get bandswitch initvals */
2144 switch (dev->phy.type) {
2145 case B43_PHYTYPE_A:
2146 if ((rev >= 5) && (rev <= 10)) {
2147 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2148 filename = "a0g1bsinitvals5";
2149 else
2150 filename = "a0g0bsinitvals5";
2151 } else if (rev >= 11)
2152 filename = NULL;
2153 else
2154 goto err_no_initvals;
2155 break;
2156 case B43_PHYTYPE_G:
2157 if ((rev >= 5) && (rev <= 10))
2158 filename = "b0g0bsinitvals5";
2159 else if (rev >= 11)
2160 filename = NULL;
2161 else
2162 goto err_no_initvals;
2163 break;
2164 case B43_PHYTYPE_N:
2165 if ((rev >= 11) && (rev <= 12))
2166 filename = "n0bsinitvals11";
2167 else
2168 goto err_no_initvals;
2169 break;
2170 default:
2171 goto err_no_initvals;
2172 }
2173 err = do_request_fw(dev, filename, &fw->initvals_band, 0);
2174 if (err)
2175 goto err_load;
2176
2177 return 0;
2178
2179 err_load:
2180 b43_print_fw_helptext(dev->wl, 1);
2181 goto error;
2182
2183 err_no_ucode:
2184 err = -ENODEV;
2185 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
2186 goto error;
2187
2188 err_no_pcm:
2189 err = -ENODEV;
2190 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
2191 goto error;
2192
2193 err_no_initvals:
2194 err = -ENODEV;
2195 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
2196 "core rev %u\n", dev->phy.type, rev);
2197 goto error;
2198
2199 error:
2200 b43_release_firmware(dev);
2201 return err;
2202 }
2203
2204 static int b43_upload_microcode(struct b43_wldev *dev)
2205 {
2206 const size_t hdr_len = sizeof(struct b43_fw_header);
2207 const __be32 *data;
2208 unsigned int i, len;
2209 u16 fwrev, fwpatch, fwdate, fwtime;
2210 u32 tmp, macctl;
2211 int err = 0;
2212
2213 /* Jump the microcode PSM to offset 0 */
2214 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2215 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2216 macctl |= B43_MACCTL_PSM_JMP0;
2217 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2218 /* Zero out all microcode PSM registers and shared memory. */
2219 for (i = 0; i < 64; i++)
2220 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2221 for (i = 0; i < 4096; i += 2)
2222 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2223
2224 /* Upload Microcode. */
2225 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2226 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2227 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2228 for (i = 0; i < len; i++) {
2229 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2230 udelay(10);
2231 }
2232
2233 if (dev->fw.pcm.data) {
2234 /* Upload PCM data. */
2235 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2236 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2237 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2238 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2239 /* No need for autoinc bit in SHM_HW */
2240 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2241 for (i = 0; i < len; i++) {
2242 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2243 udelay(10);
2244 }
2245 }
2246
2247 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2248
2249 /* Start the microcode PSM */
2250 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2251 macctl &= ~B43_MACCTL_PSM_JMP0;
2252 macctl |= B43_MACCTL_PSM_RUN;
2253 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2254
2255 /* Wait for the microcode to load and respond */
2256 i = 0;
2257 while (1) {
2258 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2259 if (tmp == B43_IRQ_MAC_SUSPENDED)
2260 break;
2261 i++;
2262 if (i >= 20) {
2263 b43err(dev->wl, "Microcode not responding\n");
2264 b43_print_fw_helptext(dev->wl, 1);
2265 err = -ENODEV;
2266 goto error;
2267 }
2268 msleep_interruptible(50);
2269 if (signal_pending(current)) {
2270 err = -EINTR;
2271 goto error;
2272 }
2273 }
2274 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2275
2276 /* Get and check the revisions. */
2277 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2278 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2279 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2280 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2281
2282 if (fwrev <= 0x128) {
2283 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2284 "binary drivers older than version 4.x is unsupported. "
2285 "You must upgrade your firmware files.\n");
2286 b43_print_fw_helptext(dev->wl, 1);
2287 err = -EOPNOTSUPP;
2288 goto error;
2289 }
2290 dev->fw.rev = fwrev;
2291 dev->fw.patch = fwpatch;
2292 dev->fw.opensource = (fwdate == 0xFFFF);
2293
2294 if (dev->fw.opensource) {
2295 /* Patchlevel info is encoded in the "time" field. */
2296 dev->fw.patch = fwtime;
2297 b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n",
2298 dev->fw.rev, dev->fw.patch,
2299 dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : "");
2300 } else {
2301 b43info(dev->wl, "Loading firmware version %u.%u "
2302 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2303 fwrev, fwpatch,
2304 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2305 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2306 if (dev->fw.pcm_request_failed) {
2307 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2308 "Hardware accelerated cryptography is disabled.\n");
2309 b43_print_fw_helptext(dev->wl, 0);
2310 }
2311 }
2312
2313 if (b43_is_old_txhdr_format(dev)) {
2314 b43warn(dev->wl, "You are using an old firmware image. "
2315 "Support for old firmware will be removed in July 2008.\n");
2316 b43_print_fw_helptext(dev->wl, 0);
2317 }
2318
2319 return 0;
2320
2321 error:
2322 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2323 macctl &= ~B43_MACCTL_PSM_RUN;
2324 macctl |= B43_MACCTL_PSM_JMP0;
2325 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2326
2327 return err;
2328 }
2329
2330 static int b43_write_initvals(struct b43_wldev *dev,
2331 const struct b43_iv *ivals,
2332 size_t count,
2333 size_t array_size)
2334 {
2335 const struct b43_iv *iv;
2336 u16 offset;
2337 size_t i;
2338 bool bit32;
2339
2340 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2341 iv = ivals;
2342 for (i = 0; i < count; i++) {
2343 if (array_size < sizeof(iv->offset_size))
2344 goto err_format;
2345 array_size -= sizeof(iv->offset_size);
2346 offset = be16_to_cpu(iv->offset_size);
2347 bit32 = !!(offset & B43_IV_32BIT);
2348 offset &= B43_IV_OFFSET_MASK;
2349 if (offset >= 0x1000)
2350 goto err_format;
2351 if (bit32) {
2352 u32 value;
2353
2354 if (array_size < sizeof(iv->data.d32))
2355 goto err_format;
2356 array_size -= sizeof(iv->data.d32);
2357
2358 value = get_unaligned_be32(&iv->data.d32);
2359 b43_write32(dev, offset, value);
2360
2361 iv = (const struct b43_iv *)((const uint8_t *)iv +
2362 sizeof(__be16) +
2363 sizeof(__be32));
2364 } else {
2365 u16 value;
2366
2367 if (array_size < sizeof(iv->data.d16))
2368 goto err_format;
2369 array_size -= sizeof(iv->data.d16);
2370
2371 value = be16_to_cpu(iv->data.d16);
2372 b43_write16(dev, offset, value);
2373
2374 iv = (const struct b43_iv *)((const uint8_t *)iv +
2375 sizeof(__be16) +
2376 sizeof(__be16));
2377 }
2378 }
2379 if (array_size)
2380 goto err_format;
2381
2382 return 0;
2383
2384 err_format:
2385 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2386 b43_print_fw_helptext(dev->wl, 1);
2387
2388 return -EPROTO;
2389 }
2390
2391 static int b43_upload_initvals(struct b43_wldev *dev)
2392 {
2393 const size_t hdr_len = sizeof(struct b43_fw_header);
2394 const struct b43_fw_header *hdr;
2395 struct b43_firmware *fw = &dev->fw;
2396 const struct b43_iv *ivals;
2397 size_t count;
2398 int err;
2399
2400 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2401 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2402 count = be32_to_cpu(hdr->size);
2403 err = b43_write_initvals(dev, ivals, count,
2404 fw->initvals.data->size - hdr_len);
2405 if (err)
2406 goto out;
2407 if (fw->initvals_band.data) {
2408 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2409 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2410 count = be32_to_cpu(hdr->size);
2411 err = b43_write_initvals(dev, ivals, count,
2412 fw->initvals_band.data->size - hdr_len);
2413 if (err)
2414 goto out;
2415 }
2416 out:
2417
2418 return err;
2419 }
2420
2421 /* Initialize the GPIOs
2422 * http://bcm-specs.sipsolutions.net/GPIO
2423 */
2424 static int b43_gpio_init(struct b43_wldev *dev)
2425 {
2426 struct ssb_bus *bus = dev->dev->bus;
2427 struct ssb_device *gpiodev, *pcidev = NULL;
2428 u32 mask, set;
2429
2430 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2431 & ~B43_MACCTL_GPOUTSMSK);
2432
2433 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2434 | 0x000F);
2435
2436 mask = 0x0000001F;
2437 set = 0x0000000F;
2438 if (dev->dev->bus->chip_id == 0x4301) {
2439 mask |= 0x0060;
2440 set |= 0x0060;
2441 }
2442 if (0 /* FIXME: conditional unknown */ ) {
2443 b43_write16(dev, B43_MMIO_GPIO_MASK,
2444 b43_read16(dev, B43_MMIO_GPIO_MASK)
2445 | 0x0100);
2446 mask |= 0x0180;
2447 set |= 0x0180;
2448 }
2449 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2450 b43_write16(dev, B43_MMIO_GPIO_MASK,
2451 b43_read16(dev, B43_MMIO_GPIO_MASK)
2452 | 0x0200);
2453 mask |= 0x0200;
2454 set |= 0x0200;
2455 }
2456 if (dev->dev->id.revision >= 2)
2457 mask |= 0x0010; /* FIXME: This is redundant. */
2458
2459 #ifdef CONFIG_SSB_DRIVER_PCICORE
2460 pcidev = bus->pcicore.dev;
2461 #endif
2462 gpiodev = bus->chipco.dev ? : pcidev;
2463 if (!gpiodev)
2464 return 0;
2465 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2466 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2467 & mask) | set);
2468
2469 return 0;
2470 }
2471
2472 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2473 static void b43_gpio_cleanup(struct b43_wldev *dev)
2474 {
2475 struct ssb_bus *bus = dev->dev->bus;
2476 struct ssb_device *gpiodev, *pcidev = NULL;
2477
2478 #ifdef CONFIG_SSB_DRIVER_PCICORE
2479 pcidev = bus->pcicore.dev;
2480 #endif
2481 gpiodev = bus->chipco.dev ? : pcidev;
2482 if (!gpiodev)
2483 return;
2484 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2485 }
2486
2487 /* http://bcm-specs.sipsolutions.net/EnableMac */
2488 void b43_mac_enable(struct b43_wldev *dev)
2489 {
2490 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2491 u16 fwstate;
2492
2493 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2494 B43_SHM_SH_UCODESTAT);
2495 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2496 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2497 b43err(dev->wl, "b43_mac_enable(): The firmware "
2498 "should be suspended, but current state is %u\n",
2499 fwstate);
2500 }
2501 }
2502
2503 dev->mac_suspended--;
2504 B43_WARN_ON(dev->mac_suspended < 0);
2505 if (dev->mac_suspended == 0) {
2506 b43_write32(dev, B43_MMIO_MACCTL,
2507 b43_read32(dev, B43_MMIO_MACCTL)
2508 | B43_MACCTL_ENABLED);
2509 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2510 B43_IRQ_MAC_SUSPENDED);
2511 /* Commit writes */
2512 b43_read32(dev, B43_MMIO_MACCTL);
2513 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2514 b43_power_saving_ctl_bits(dev, 0);
2515 }
2516 }
2517
2518 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2519 void b43_mac_suspend(struct b43_wldev *dev)
2520 {
2521 int i;
2522 u32 tmp;
2523
2524 might_sleep();
2525 B43_WARN_ON(dev->mac_suspended < 0);
2526
2527 if (dev->mac_suspended == 0) {
2528 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2529 b43_write32(dev, B43_MMIO_MACCTL,
2530 b43_read32(dev, B43_MMIO_MACCTL)
2531 & ~B43_MACCTL_ENABLED);
2532 /* force pci to flush the write */
2533 b43_read32(dev, B43_MMIO_MACCTL);
2534 for (i = 35; i; i--) {
2535 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2536 if (tmp & B43_IRQ_MAC_SUSPENDED)
2537 goto out;
2538 udelay(10);
2539 }
2540 /* Hm, it seems this will take some time. Use msleep(). */
2541 for (i = 40; i; i--) {
2542 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2543 if (tmp & B43_IRQ_MAC_SUSPENDED)
2544 goto out;
2545 msleep(1);
2546 }
2547 b43err(dev->wl, "MAC suspend failed\n");
2548 }
2549 out:
2550 dev->mac_suspended++;
2551 }
2552
2553 static void b43_adjust_opmode(struct b43_wldev *dev)
2554 {
2555 struct b43_wl *wl = dev->wl;
2556 u32 ctl;
2557 u16 cfp_pretbtt;
2558
2559 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2560 /* Reset status to STA infrastructure mode. */
2561 ctl &= ~B43_MACCTL_AP;
2562 ctl &= ~B43_MACCTL_KEEP_CTL;
2563 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2564 ctl &= ~B43_MACCTL_KEEP_BAD;
2565 ctl &= ~B43_MACCTL_PROMISC;
2566 ctl &= ~B43_MACCTL_BEACPROMISC;
2567 ctl |= B43_MACCTL_INFRA;
2568
2569 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP) ||
2570 b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT))
2571 ctl |= B43_MACCTL_AP;
2572 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2573 ctl &= ~B43_MACCTL_INFRA;
2574
2575 if (wl->filter_flags & FIF_CONTROL)
2576 ctl |= B43_MACCTL_KEEP_CTL;
2577 if (wl->filter_flags & FIF_FCSFAIL)
2578 ctl |= B43_MACCTL_KEEP_BAD;
2579 if (wl->filter_flags & FIF_PLCPFAIL)
2580 ctl |= B43_MACCTL_KEEP_BADPLCP;
2581 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2582 ctl |= B43_MACCTL_PROMISC;
2583 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2584 ctl |= B43_MACCTL_BEACPROMISC;
2585
2586 /* Workaround: On old hardware the HW-MAC-address-filter
2587 * doesn't work properly, so always run promisc in filter
2588 * it in software. */
2589 if (dev->dev->id.revision <= 4)
2590 ctl |= B43_MACCTL_PROMISC;
2591
2592 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2593
2594 cfp_pretbtt = 2;
2595 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2596 if (dev->dev->bus->chip_id == 0x4306 &&
2597 dev->dev->bus->chip_rev == 3)
2598 cfp_pretbtt = 100;
2599 else
2600 cfp_pretbtt = 50;
2601 }
2602 b43_write16(dev, 0x612, cfp_pretbtt);
2603 }
2604
2605 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2606 {
2607 u16 offset;
2608
2609 if (is_ofdm) {
2610 offset = 0x480;
2611 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2612 } else {
2613 offset = 0x4C0;
2614 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2615 }
2616 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2617 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2618 }
2619
2620 static void b43_rate_memory_init(struct b43_wldev *dev)
2621 {
2622 switch (dev->phy.type) {
2623 case B43_PHYTYPE_A:
2624 case B43_PHYTYPE_G:
2625 case B43_PHYTYPE_N:
2626 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2627 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2628 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2629 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2630 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2631 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2632 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2633 if (dev->phy.type == B43_PHYTYPE_A)
2634 break;
2635 /* fallthrough */
2636 case B43_PHYTYPE_B:
2637 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2638 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2639 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2640 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2641 break;
2642 default:
2643 B43_WARN_ON(1);
2644 }
2645 }
2646
2647 /* Set the default values for the PHY TX Control Words. */
2648 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2649 {
2650 u16 ctl = 0;
2651
2652 ctl |= B43_TXH_PHY_ENC_CCK;
2653 ctl |= B43_TXH_PHY_ANT01AUTO;
2654 ctl |= B43_TXH_PHY_TXPWR;
2655
2656 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2657 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2658 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2659 }
2660
2661 /* Set the TX-Antenna for management frames sent by firmware. */
2662 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2663 {
2664 u16 ant;
2665 u16 tmp;
2666
2667 ant = b43_antenna_to_phyctl(antenna);
2668
2669 /* For ACK/CTS */
2670 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2671 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2672 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2673 /* For Probe Resposes */
2674 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2675 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2676 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2677 }
2678
2679 /* This is the opposite of b43_chip_init() */
2680 static void b43_chip_exit(struct b43_wldev *dev)
2681 {
2682 b43_radio_turn_off(dev, 1);
2683 b43_gpio_cleanup(dev);
2684 b43_lo_g_cleanup(dev);
2685 /* firmware is released later */
2686 }
2687
2688 /* Initialize the chip
2689 * http://bcm-specs.sipsolutions.net/ChipInit
2690 */
2691 static int b43_chip_init(struct b43_wldev *dev)
2692 {
2693 struct b43_phy *phy = &dev->phy;
2694 int err, tmp;
2695 u32 value32, macctl;
2696 u16 value16;
2697
2698 /* Initialize the MAC control */
2699 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2700 if (dev->phy.gmode)
2701 macctl |= B43_MACCTL_GMODE;
2702 macctl |= B43_MACCTL_INFRA;
2703 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2704
2705 err = b43_request_firmware(dev);
2706 if (err)
2707 goto out;
2708 err = b43_upload_microcode(dev);
2709 if (err)
2710 goto out; /* firmware is released later */
2711
2712 err = b43_gpio_init(dev);
2713 if (err)
2714 goto out; /* firmware is released later */
2715
2716 err = b43_upload_initvals(dev);
2717 if (err)
2718 goto err_gpio_clean;
2719 b43_radio_turn_on(dev);
2720
2721 b43_write16(dev, 0x03E6, 0x0000);
2722 err = b43_phy_init(dev);
2723 if (err)
2724 goto err_radio_off;
2725
2726 /* Select initial Interference Mitigation. */
2727 tmp = phy->interfmode;
2728 phy->interfmode = B43_INTERFMODE_NONE;
2729 b43_radio_set_interference_mitigation(dev, tmp);
2730
2731 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2732 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2733
2734 if (phy->type == B43_PHYTYPE_B) {
2735 value16 = b43_read16(dev, 0x005E);
2736 value16 |= 0x0004;
2737 b43_write16(dev, 0x005E, value16);
2738 }
2739 b43_write32(dev, 0x0100, 0x01000000);
2740 if (dev->dev->id.revision < 5)
2741 b43_write32(dev, 0x010C, 0x01000000);
2742
2743 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2744 & ~B43_MACCTL_INFRA);
2745 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2746 | B43_MACCTL_INFRA);
2747
2748 /* Probe Response Timeout value */
2749 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2750 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2751
2752 /* Initially set the wireless operation mode. */
2753 b43_adjust_opmode(dev);
2754
2755 if (dev->dev->id.revision < 3) {
2756 b43_write16(dev, 0x060E, 0x0000);
2757 b43_write16(dev, 0x0610, 0x8000);
2758 b43_write16(dev, 0x0604, 0x0000);
2759 b43_write16(dev, 0x0606, 0x0200);
2760 } else {
2761 b43_write32(dev, 0x0188, 0x80000000);
2762 b43_write32(dev, 0x018C, 0x02000000);
2763 }
2764 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2765 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2766 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2767 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2768 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2769 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2770 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2771
2772 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2773 value32 |= 0x00100000;
2774 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2775
2776 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2777 dev->dev->bus->chipco.fast_pwrup_delay);
2778
2779 err = 0;
2780 b43dbg(dev->wl, "Chip initialized\n");
2781 out:
2782 return err;
2783
2784 err_radio_off:
2785 b43_radio_turn_off(dev, 1);
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 struct b43_phy *phy = &dev->phy;
2794
2795 if (phy->type != B43_PHYTYPE_G)
2796 return;
2797 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2798 b43_mac_suspend(dev);
2799 b43_calc_nrssi_slope(dev);
2800 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2801 u8 old_chan = phy->channel;
2802
2803 /* VCO Calibration */
2804 if (old_chan >= 8)
2805 b43_radio_selectchannel(dev, 1, 0);
2806 else
2807 b43_radio_selectchannel(dev, 13, 0);
2808 b43_radio_selectchannel(dev, old_chan, 0);
2809 }
2810 b43_mac_enable(dev);
2811 }
2812 }
2813
2814 static void b43_periodic_every30sec(struct b43_wldev *dev)
2815 {
2816 /* Update device statistics. */
2817 b43_calculate_link_quality(dev);
2818 }
2819
2820 static void b43_periodic_every15sec(struct b43_wldev *dev)
2821 {
2822 struct b43_phy *phy = &dev->phy;
2823 u16 wdr;
2824
2825 if (dev->fw.opensource) {
2826 /* Check if the firmware is still alive.
2827 * It will reset the watchdog counter to 0 in its idle loop. */
2828 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2829 if (unlikely(wdr)) {
2830 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2831 b43_controller_restart(dev, "Firmware watchdog");
2832 return;
2833 } else {
2834 b43_shm_write16(dev, B43_SHM_SCRATCH,
2835 B43_WATCHDOG_REG, 1);
2836 }
2837 }
2838
2839 if (phy->type == B43_PHYTYPE_G) {
2840 //TODO: update_aci_moving_average
2841 if (phy->aci_enable && phy->aci_wlan_automatic) {
2842 b43_mac_suspend(dev);
2843 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2844 if (0 /*TODO: bunch of conditions */ ) {
2845 b43_radio_set_interference_mitigation
2846 (dev, B43_INTERFMODE_MANUALWLAN);
2847 }
2848 } else if (1 /*TODO*/) {
2849 /*
2850 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2851 b43_radio_set_interference_mitigation(dev,
2852 B43_INTERFMODE_NONE);
2853 }
2854 */
2855 }
2856 b43_mac_enable(dev);
2857 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2858 phy->rev == 1) {
2859 //TODO: implement rev1 workaround
2860 }
2861 }
2862 b43_phy_xmitpower(dev); //FIXME: unless scanning?
2863 b43_lo_g_maintanance_work(dev);
2864 //TODO for APHY (temperature?)
2865
2866 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2867 wmb();
2868 }
2869
2870 static void do_periodic_work(struct b43_wldev *dev)
2871 {
2872 unsigned int state;
2873
2874 state = dev->periodic_state;
2875 if (state % 4 == 0)
2876 b43_periodic_every60sec(dev);
2877 if (state % 2 == 0)
2878 b43_periodic_every30sec(dev);
2879 b43_periodic_every15sec(dev);
2880 }
2881
2882 /* Periodic work locking policy:
2883 * The whole periodic work handler is protected by
2884 * wl->mutex. If another lock is needed somewhere in the
2885 * pwork callchain, it's aquired in-place, where it's needed.
2886 */
2887 static void b43_periodic_work_handler(struct work_struct *work)
2888 {
2889 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2890 periodic_work.work);
2891 struct b43_wl *wl = dev->wl;
2892 unsigned long delay;
2893
2894 mutex_lock(&wl->mutex);
2895
2896 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2897 goto out;
2898 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2899 goto out_requeue;
2900
2901 do_periodic_work(dev);
2902
2903 dev->periodic_state++;
2904 out_requeue:
2905 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2906 delay = msecs_to_jiffies(50);
2907 else
2908 delay = round_jiffies_relative(HZ * 15);
2909 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2910 out:
2911 mutex_unlock(&wl->mutex);
2912 }
2913
2914 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2915 {
2916 struct delayed_work *work = &dev->periodic_work;
2917
2918 dev->periodic_state = 0;
2919 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2920 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2921 }
2922
2923 /* Check if communication with the device works correctly. */
2924 static int b43_validate_chipaccess(struct b43_wldev *dev)
2925 {
2926 u32 v, backup;
2927
2928 backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2929
2930 /* Check for read/write and endianness problems. */
2931 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2932 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2933 goto error;
2934 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2935 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2936 goto error;
2937
2938 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2939
2940 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2941 /* The 32bit register shadows the two 16bit registers
2942 * with update sideeffects. Validate this. */
2943 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2944 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2945 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2946 goto error;
2947 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2948 goto error;
2949 }
2950 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2951
2952 v = b43_read32(dev, B43_MMIO_MACCTL);
2953 v |= B43_MACCTL_GMODE;
2954 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2955 goto error;
2956
2957 return 0;
2958 error:
2959 b43err(dev->wl, "Failed to validate the chipaccess\n");
2960 return -ENODEV;
2961 }
2962
2963 static void b43_security_init(struct b43_wldev *dev)
2964 {
2965 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2966 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2967 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2968 /* KTP is a word address, but we address SHM bytewise.
2969 * So multiply by two.
2970 */
2971 dev->ktp *= 2;
2972 if (dev->dev->id.revision >= 5) {
2973 /* Number of RCMTA address slots */
2974 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2975 }
2976 b43_clear_keys(dev);
2977 }
2978
2979 static int b43_rng_read(struct hwrng *rng, u32 * data)
2980 {
2981 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2982 unsigned long flags;
2983
2984 /* Don't take wl->mutex here, as it could deadlock with
2985 * hwrng internal locking. It's not needed to take
2986 * wl->mutex here, anyway. */
2987
2988 spin_lock_irqsave(&wl->irq_lock, flags);
2989 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2990 spin_unlock_irqrestore(&wl->irq_lock, flags);
2991
2992 return (sizeof(u16));
2993 }
2994
2995 static void b43_rng_exit(struct b43_wl *wl)
2996 {
2997 if (wl->rng_initialized)
2998 hwrng_unregister(&wl->rng);
2999 }
3000
3001 static int b43_rng_init(struct b43_wl *wl)
3002 {
3003 int err;
3004
3005 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3006 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3007 wl->rng.name = wl->rng_name;
3008 wl->rng.data_read = b43_rng_read;
3009 wl->rng.priv = (unsigned long)wl;
3010 wl->rng_initialized = 1;
3011 err = hwrng_register(&wl->rng);
3012 if (err) {
3013 wl->rng_initialized = 0;
3014 b43err(wl, "Failed to register the random "
3015 "number generator (%d)\n", err);
3016 }
3017
3018 return err;
3019 }
3020
3021 static int b43_op_tx(struct ieee80211_hw *hw,
3022 struct sk_buff *skb)
3023 {
3024 struct b43_wl *wl = hw_to_b43_wl(hw);
3025 struct b43_wldev *dev = wl->current_dev;
3026 unsigned long flags;
3027 int err;
3028
3029 if (unlikely(skb->len < 2 + 2 + 6)) {
3030 /* Too short, this can't be a valid frame. */
3031 goto drop_packet;
3032 }
3033 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3034 if (unlikely(!dev))
3035 goto drop_packet;
3036
3037 /* Transmissions on seperate queues can run concurrently. */
3038 read_lock_irqsave(&wl->tx_lock, flags);
3039
3040 err = -ENODEV;
3041 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3042 if (b43_using_pio_transfers(dev))
3043 err = b43_pio_tx(dev, skb);
3044 else
3045 err = b43_dma_tx(dev, skb);
3046 }
3047
3048 read_unlock_irqrestore(&wl->tx_lock, flags);
3049
3050 if (unlikely(err))
3051 goto drop_packet;
3052 return NETDEV_TX_OK;
3053
3054 drop_packet:
3055 /* We can not transmit this packet. Drop it. */
3056 dev_kfree_skb_any(skb);
3057 return NETDEV_TX_OK;
3058 }
3059
3060 /* Locking: wl->irq_lock */
3061 static void b43_qos_params_upload(struct b43_wldev *dev,
3062 const struct ieee80211_tx_queue_params *p,
3063 u16 shm_offset)
3064 {
3065 u16 params[B43_NR_QOSPARAMS];
3066 int cw_min, cw_max, aifs, bslots, tmp;
3067 unsigned int i;
3068
3069 const u16 aCWmin = 0x0001;
3070 const u16 aCWmax = 0x03FF;
3071
3072 /* Calculate the default values for the parameters, if needed. */
3073 switch (shm_offset) {
3074 case B43_QOS_VOICE:
3075 aifs = (p->aifs == -1) ? 2 : p->aifs;
3076 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 4 - 1) : p->cw_min;
3077 cw_max = (p->cw_max == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_max;
3078 break;
3079 case B43_QOS_VIDEO:
3080 aifs = (p->aifs == -1) ? 2 : p->aifs;
3081 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_min;
3082 cw_max = (p->cw_max == 0) ? aCWmin : p->cw_max;
3083 break;
3084 case B43_QOS_BESTEFFORT:
3085 aifs = (p->aifs == -1) ? 3 : p->aifs;
3086 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
3087 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
3088 break;
3089 case B43_QOS_BACKGROUND:
3090 aifs = (p->aifs == -1) ? 7 : p->aifs;
3091 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
3092 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
3093 break;
3094 default:
3095 B43_WARN_ON(1);
3096 return;
3097 }
3098 if (cw_min <= 0)
3099 cw_min = aCWmin;
3100 if (cw_max <= 0)
3101 cw_max = aCWmin;
3102 bslots = b43_read16(dev, B43_MMIO_RNG) % cw_min;
3103
3104 memset(&params, 0, sizeof(params));
3105
3106 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3107 params[B43_QOSPARAM_CWMIN] = cw_min;
3108 params[B43_QOSPARAM_CWMAX] = cw_max;
3109 params[B43_QOSPARAM_CWCUR] = cw_min;
3110 params[B43_QOSPARAM_AIFS] = aifs;
3111 params[B43_QOSPARAM_BSLOTS] = bslots;
3112 params[B43_QOSPARAM_REGGAP] = bslots + aifs;
3113
3114 for (i = 0; i < ARRAY_SIZE(params); i++) {
3115 if (i == B43_QOSPARAM_STATUS) {
3116 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3117 shm_offset + (i * 2));
3118 /* Mark the parameters as updated. */
3119 tmp |= 0x100;
3120 b43_shm_write16(dev, B43_SHM_SHARED,
3121 shm_offset + (i * 2),
3122 tmp);
3123 } else {
3124 b43_shm_write16(dev, B43_SHM_SHARED,
3125 shm_offset + (i * 2),
3126 params[i]);
3127 }
3128 }
3129 }
3130
3131 /* Update the QOS parameters in hardware. */
3132 static void b43_qos_update(struct b43_wldev *dev)
3133 {
3134 struct b43_wl *wl = dev->wl;
3135 struct b43_qos_params *params;
3136 unsigned long flags;
3137 unsigned int i;
3138
3139 /* Mapping of mac80211 queues to b43 SHM offsets. */
3140 static const u16 qos_shm_offsets[] = {
3141 [0] = B43_QOS_VOICE,
3142 [1] = B43_QOS_VIDEO,
3143 [2] = B43_QOS_BESTEFFORT,
3144 [3] = B43_QOS_BACKGROUND,
3145 };
3146 BUILD_BUG_ON(ARRAY_SIZE(qos_shm_offsets) != ARRAY_SIZE(wl->qos_params));
3147
3148 b43_mac_suspend(dev);
3149 spin_lock_irqsave(&wl->irq_lock, flags);
3150
3151 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3152 params = &(wl->qos_params[i]);
3153 if (params->need_hw_update) {
3154 b43_qos_params_upload(dev, &(params->p),
3155 qos_shm_offsets[i]);
3156 params->need_hw_update = 0;
3157 }
3158 }
3159
3160 spin_unlock_irqrestore(&wl->irq_lock, flags);
3161 b43_mac_enable(dev);
3162 }
3163
3164 static void b43_qos_clear(struct b43_wl *wl)
3165 {
3166 struct b43_qos_params *params;
3167 unsigned int i;
3168
3169 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3170 params = &(wl->qos_params[i]);
3171
3172 memset(&(params->p), 0, sizeof(params->p));
3173 params->p.aifs = -1;
3174 params->need_hw_update = 1;
3175 }
3176 }
3177
3178 /* Initialize the core's QOS capabilities */
3179 static void b43_qos_init(struct b43_wldev *dev)
3180 {
3181 struct b43_wl *wl = dev->wl;
3182 unsigned int i;
3183
3184 /* Upload the current QOS parameters. */
3185 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++)
3186 wl->qos_params[i].need_hw_update = 1;
3187 b43_qos_update(dev);
3188
3189 /* Enable QOS support. */
3190 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3191 b43_write16(dev, B43_MMIO_IFSCTL,
3192 b43_read16(dev, B43_MMIO_IFSCTL)
3193 | B43_MMIO_IFSCTL_USE_EDCF);
3194 }
3195
3196 static void b43_qos_update_work(struct work_struct *work)
3197 {
3198 struct b43_wl *wl = container_of(work, struct b43_wl, qos_update_work);
3199 struct b43_wldev *dev;
3200
3201 mutex_lock(&wl->mutex);
3202 dev = wl->current_dev;
3203 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED)))
3204 b43_qos_update(dev);
3205 mutex_unlock(&wl->mutex);
3206 }
3207
3208 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3209 const struct ieee80211_tx_queue_params *params)
3210 {
3211 struct b43_wl *wl = hw_to_b43_wl(hw);
3212 unsigned long flags;
3213 unsigned int queue = (unsigned int)_queue;
3214 struct b43_qos_params *p;
3215
3216 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3217 /* Queue not available or don't support setting
3218 * params on this queue. Return success to not
3219 * confuse mac80211. */
3220 return 0;
3221 }
3222
3223 spin_lock_irqsave(&wl->irq_lock, flags);
3224 p = &(wl->qos_params[queue]);
3225 memcpy(&(p->p), params, sizeof(p->p));
3226 p->need_hw_update = 1;
3227 spin_unlock_irqrestore(&wl->irq_lock, flags);
3228
3229 queue_work(hw->workqueue, &wl->qos_update_work);
3230
3231 return 0;
3232 }
3233
3234 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3235 struct ieee80211_tx_queue_stats *stats)
3236 {
3237 struct b43_wl *wl = hw_to_b43_wl(hw);
3238 struct b43_wldev *dev = wl->current_dev;
3239 unsigned long flags;
3240 int err = -ENODEV;
3241
3242 if (!dev)
3243 goto out;
3244 spin_lock_irqsave(&wl->irq_lock, flags);
3245 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3246 if (b43_using_pio_transfers(dev))
3247 b43_pio_get_tx_stats(dev, stats);
3248 else
3249 b43_dma_get_tx_stats(dev, stats);
3250 err = 0;
3251 }
3252 spin_unlock_irqrestore(&wl->irq_lock, flags);
3253 out:
3254 return err;
3255 }
3256
3257 static int b43_op_get_stats(struct ieee80211_hw *hw,
3258 struct ieee80211_low_level_stats *stats)
3259 {
3260 struct b43_wl *wl = hw_to_b43_wl(hw);
3261 unsigned long flags;
3262
3263 spin_lock_irqsave(&wl->irq_lock, flags);
3264 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3265 spin_unlock_irqrestore(&wl->irq_lock, flags);
3266
3267 return 0;
3268 }
3269
3270 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3271 {
3272 struct ssb_device *sdev = dev->dev;
3273 u32 tmslow;
3274
3275 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3276 tmslow &= ~B43_TMSLOW_GMODE;
3277 tmslow |= B43_TMSLOW_PHYRESET;
3278 tmslow |= SSB_TMSLOW_FGC;
3279 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3280 msleep(1);
3281
3282 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3283 tmslow &= ~SSB_TMSLOW_FGC;
3284 tmslow |= B43_TMSLOW_PHYRESET;
3285 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3286 msleep(1);
3287 }
3288
3289 static const char * band_to_string(enum ieee80211_band band)
3290 {
3291 switch (band) {
3292 case IEEE80211_BAND_5GHZ:
3293 return "5";
3294 case IEEE80211_BAND_2GHZ:
3295 return "2.4";
3296 default:
3297 break;
3298 }
3299 B43_WARN_ON(1);
3300 return "";
3301 }
3302
3303 /* Expects wl->mutex locked */
3304 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3305 {
3306 struct b43_wldev *up_dev = NULL;
3307 struct b43_wldev *down_dev;
3308 struct b43_wldev *d;
3309 int err;
3310 bool gmode;
3311 int prev_status;
3312
3313 /* Find a device and PHY which supports the band. */
3314 list_for_each_entry(d, &wl->devlist, list) {
3315 switch (chan->band) {
3316 case IEEE80211_BAND_5GHZ:
3317 if (d->phy.supports_5ghz) {
3318 up_dev = d;
3319 gmode = 0;
3320 }
3321 break;
3322 case IEEE80211_BAND_2GHZ:
3323 if (d->phy.supports_2ghz) {
3324 up_dev = d;
3325 gmode = 1;
3326 }
3327 break;
3328 default:
3329 B43_WARN_ON(1);
3330 return -EINVAL;
3331 }
3332 if (up_dev)
3333 break;
3334 }
3335 if (!up_dev) {
3336 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3337 band_to_string(chan->band));
3338 return -ENODEV;
3339 }
3340 if ((up_dev == wl->current_dev) &&
3341 (!!wl->current_dev->phy.gmode == !!gmode)) {
3342 /* This device is already running. */
3343 return 0;
3344 }
3345 b43dbg(wl, "Switching to %s-GHz band\n",
3346 band_to_string(chan->band));
3347 down_dev = wl->current_dev;
3348
3349 prev_status = b43_status(down_dev);
3350 /* Shutdown the currently running core. */
3351 if (prev_status >= B43_STAT_STARTED)
3352 b43_wireless_core_stop(down_dev);
3353 if (prev_status >= B43_STAT_INITIALIZED)
3354 b43_wireless_core_exit(down_dev);
3355
3356 if (down_dev != up_dev) {
3357 /* We switch to a different core, so we put PHY into
3358 * RESET on the old core. */
3359 b43_put_phy_into_reset(down_dev);
3360 }
3361
3362 /* Now start the new core. */
3363 up_dev->phy.gmode = gmode;
3364 if (prev_status >= B43_STAT_INITIALIZED) {
3365 err = b43_wireless_core_init(up_dev);
3366 if (err) {
3367 b43err(wl, "Fatal: Could not initialize device for "
3368 "selected %s-GHz band\n",
3369 band_to_string(chan->band));
3370 goto init_failure;
3371 }
3372 }
3373 if (prev_status >= B43_STAT_STARTED) {
3374 err = b43_wireless_core_start(up_dev);
3375 if (err) {
3376 b43err(wl, "Fatal: Coult not start device for "
3377 "selected %s-GHz band\n",
3378 band_to_string(chan->band));
3379 b43_wireless_core_exit(up_dev);
3380 goto init_failure;
3381 }
3382 }
3383 B43_WARN_ON(b43_status(up_dev) != prev_status);
3384
3385 wl->current_dev = up_dev;
3386
3387 return 0;
3388 init_failure:
3389 /* Whoops, failed to init the new core. No core is operating now. */
3390 wl->current_dev = NULL;
3391 return err;
3392 }
3393
3394 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3395 {
3396 struct b43_wl *wl = hw_to_b43_wl(hw);
3397 struct b43_wldev *dev;
3398 struct b43_phy *phy;
3399 unsigned long flags;
3400 int antenna;
3401 int err = 0;
3402 u32 savedirqs;
3403
3404 mutex_lock(&wl->mutex);
3405
3406 /* Switch the band (if necessary). This might change the active core. */
3407 err = b43_switch_band(wl, conf->channel);
3408 if (err)
3409 goto out_unlock_mutex;
3410 dev = wl->current_dev;
3411 phy = &dev->phy;
3412
3413 /* Disable IRQs while reconfiguring the device.
3414 * This makes it possible to drop the spinlock throughout
3415 * the reconfiguration process. */
3416 spin_lock_irqsave(&wl->irq_lock, flags);
3417 if (b43_status(dev) < B43_STAT_STARTED) {
3418 spin_unlock_irqrestore(&wl->irq_lock, flags);
3419 goto out_unlock_mutex;
3420 }
3421 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
3422 spin_unlock_irqrestore(&wl->irq_lock, flags);
3423 b43_synchronize_irq(dev);
3424
3425 /* Switch to the requested channel.
3426 * The firmware takes care of races with the TX handler. */
3427 if (conf->channel->hw_value != phy->channel)
3428 b43_radio_selectchannel(dev, conf->channel->hw_value, 0);
3429
3430 /* Enable/Disable ShortSlot timing. */
3431 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
3432 dev->short_slot) {
3433 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
3434 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
3435 b43_short_slot_timing_enable(dev);
3436 else
3437 b43_short_slot_timing_disable(dev);
3438 }
3439
3440 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3441
3442 /* Adjust the desired TX power level. */
3443 if (conf->power_level != 0) {
3444 if (conf->power_level != phy->power_level) {
3445 phy->power_level = conf->power_level;
3446 b43_phy_xmitpower(dev);
3447 }
3448 }
3449
3450 /* Antennas for RX and management frame TX. */
3451 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
3452 b43_mgmtframe_txantenna(dev, antenna);
3453 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
3454 b43_set_rx_antenna(dev, antenna);
3455
3456 /* Update templates for AP/mesh mode. */
3457 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP) ||
3458 b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT))
3459 b43_set_beacon_int(dev, conf->beacon_int);
3460
3461 if (!!conf->radio_enabled != phy->radio_on) {
3462 if (conf->radio_enabled) {
3463 b43_radio_turn_on(dev);
3464 b43info(dev->wl, "Radio turned on by software\n");
3465 if (!dev->radio_hw_enable) {
3466 b43info(dev->wl, "The hardware RF-kill button "
3467 "still turns the radio physically off. "
3468 "Press the button to turn it on.\n");
3469 }
3470 } else {
3471 b43_radio_turn_off(dev, 0);
3472 b43info(dev->wl, "Radio turned off by software\n");
3473 }
3474 }
3475
3476 spin_lock_irqsave(&wl->irq_lock, flags);
3477 b43_interrupt_enable(dev, savedirqs);
3478 mmiowb();
3479 spin_unlock_irqrestore(&wl->irq_lock, flags);
3480 out_unlock_mutex:
3481 mutex_unlock(&wl->mutex);
3482
3483 return err;
3484 }
3485
3486 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3487 const u8 *local_addr, const u8 *addr,
3488 struct ieee80211_key_conf *key)
3489 {
3490 struct b43_wl *wl = hw_to_b43_wl(hw);
3491 struct b43_wldev *dev;
3492 unsigned long flags;
3493 u8 algorithm;
3494 u8 index;
3495 int err;
3496 DECLARE_MAC_BUF(mac);
3497
3498 if (modparam_nohwcrypt)
3499 return -ENOSPC; /* User disabled HW-crypto */
3500
3501 mutex_lock(&wl->mutex);
3502 spin_lock_irqsave(&wl->irq_lock, flags);
3503
3504 dev = wl->current_dev;
3505 err = -ENODEV;
3506 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3507 goto out_unlock;
3508
3509 if (dev->fw.pcm_request_failed) {
3510 /* We don't have firmware for the crypto engine.
3511 * Must use software-crypto. */
3512 err = -EOPNOTSUPP;
3513 goto out_unlock;
3514 }
3515
3516 err = -EINVAL;
3517 switch (key->alg) {
3518 case ALG_WEP:
3519 if (key->keylen == 5)
3520 algorithm = B43_SEC_ALGO_WEP40;
3521 else
3522 algorithm = B43_SEC_ALGO_WEP104;
3523 break;
3524 case ALG_TKIP:
3525 algorithm = B43_SEC_ALGO_TKIP;
3526 break;
3527 case ALG_CCMP:
3528 algorithm = B43_SEC_ALGO_AES;
3529 break;
3530 default:
3531 B43_WARN_ON(1);
3532 goto out_unlock;
3533 }
3534 index = (u8) (key->keyidx);
3535 if (index > 3)
3536 goto out_unlock;
3537
3538 switch (cmd) {
3539 case SET_KEY:
3540 if (algorithm == B43_SEC_ALGO_TKIP) {
3541 /* FIXME: No TKIP hardware encryption for now. */
3542 err = -EOPNOTSUPP;
3543 goto out_unlock;
3544 }
3545
3546 if (is_broadcast_ether_addr(addr)) {
3547 /* addr is FF:FF:FF:FF:FF:FF for default keys */
3548 err = b43_key_write(dev, index, algorithm,
3549 key->key, key->keylen, NULL, key);
3550 } else {
3551 /*
3552 * either pairwise key or address is 00:00:00:00:00:00
3553 * for transmit-only keys
3554 */
3555 err = b43_key_write(dev, -1, algorithm,
3556 key->key, key->keylen, addr, key);
3557 }
3558 if (err)
3559 goto out_unlock;
3560
3561 if (algorithm == B43_SEC_ALGO_WEP40 ||
3562 algorithm == B43_SEC_ALGO_WEP104) {
3563 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3564 } else {
3565 b43_hf_write(dev,
3566 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3567 }
3568 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3569 break;
3570 case DISABLE_KEY: {
3571 err = b43_key_clear(dev, key->hw_key_idx);
3572 if (err)
3573 goto out_unlock;
3574 break;
3575 }
3576 default:
3577 B43_WARN_ON(1);
3578 }
3579 out_unlock:
3580 spin_unlock_irqrestore(&wl->irq_lock, flags);
3581 mutex_unlock(&wl->mutex);
3582 if (!err) {
3583 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3584 "mac: %s\n",
3585 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3586 print_mac(mac, addr));
3587 }
3588 return err;
3589 }
3590
3591 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3592 unsigned int changed, unsigned int *fflags,
3593 int mc_count, struct dev_addr_list *mc_list)
3594 {
3595 struct b43_wl *wl = hw_to_b43_wl(hw);
3596 struct b43_wldev *dev = wl->current_dev;
3597 unsigned long flags;
3598
3599 if (!dev) {
3600 *fflags = 0;
3601 return;
3602 }
3603
3604 spin_lock_irqsave(&wl->irq_lock, flags);
3605 *fflags &= FIF_PROMISC_IN_BSS |
3606 FIF_ALLMULTI |
3607 FIF_FCSFAIL |
3608 FIF_PLCPFAIL |
3609 FIF_CONTROL |
3610 FIF_OTHER_BSS |
3611 FIF_BCN_PRBRESP_PROMISC;
3612
3613 changed &= FIF_PROMISC_IN_BSS |
3614 FIF_ALLMULTI |
3615 FIF_FCSFAIL |
3616 FIF_PLCPFAIL |
3617 FIF_CONTROL |
3618 FIF_OTHER_BSS |
3619 FIF_BCN_PRBRESP_PROMISC;
3620
3621 wl->filter_flags = *fflags;
3622
3623 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3624 b43_adjust_opmode(dev);
3625 spin_unlock_irqrestore(&wl->irq_lock, flags);
3626 }
3627
3628 static int b43_op_config_interface(struct ieee80211_hw *hw,
3629 struct ieee80211_vif *vif,
3630 struct ieee80211_if_conf *conf)
3631 {
3632 struct b43_wl *wl = hw_to_b43_wl(hw);
3633 struct b43_wldev *dev = wl->current_dev;
3634 unsigned long flags;
3635
3636 if (!dev)
3637 return -ENODEV;
3638 mutex_lock(&wl->mutex);
3639 spin_lock_irqsave(&wl->irq_lock, flags);
3640 B43_WARN_ON(wl->vif != vif);
3641 if (conf->bssid)
3642 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3643 else
3644 memset(wl->bssid, 0, ETH_ALEN);
3645 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3646 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP) ||
3647 b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT)) {
3648 B43_WARN_ON(conf->type != wl->if_type);
3649 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3650 if (conf->beacon)
3651 b43_update_templates(wl, conf->beacon);
3652 }
3653 b43_write_mac_bssid_templates(dev);
3654 }
3655 spin_unlock_irqrestore(&wl->irq_lock, flags);
3656 mutex_unlock(&wl->mutex);
3657
3658 return 0;
3659 }
3660
3661 /* Locking: wl->mutex */
3662 static void b43_wireless_core_stop(struct b43_wldev *dev)
3663 {
3664 struct b43_wl *wl = dev->wl;
3665 unsigned long flags;
3666
3667 if (b43_status(dev) < B43_STAT_STARTED)
3668 return;
3669
3670 /* Disable and sync interrupts. We must do this before than
3671 * setting the status to INITIALIZED, as the interrupt handler
3672 * won't care about IRQs then. */
3673 spin_lock_irqsave(&wl->irq_lock, flags);
3674 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3675 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3676 spin_unlock_irqrestore(&wl->irq_lock, flags);
3677 b43_synchronize_irq(dev);
3678
3679 write_lock_irqsave(&wl->tx_lock, flags);
3680 b43_set_status(dev, B43_STAT_INITIALIZED);
3681 write_unlock_irqrestore(&wl->tx_lock, flags);
3682
3683 b43_pio_stop(dev);
3684 mutex_unlock(&wl->mutex);
3685 /* Must unlock as it would otherwise deadlock. No races here.
3686 * Cancel the possibly running self-rearming periodic work. */
3687 cancel_delayed_work_sync(&dev->periodic_work);
3688 mutex_lock(&wl->mutex);
3689
3690 b43_mac_suspend(dev);
3691 free_irq(dev->dev->irq, dev);
3692 b43dbg(wl, "Wireless interface stopped\n");
3693 }
3694
3695 /* Locking: wl->mutex */
3696 static int b43_wireless_core_start(struct b43_wldev *dev)
3697 {
3698 int err;
3699
3700 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3701
3702 drain_txstatus_queue(dev);
3703 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3704 IRQF_SHARED, KBUILD_MODNAME, dev);
3705 if (err) {
3706 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3707 goto out;
3708 }
3709
3710 /* We are ready to run. */
3711 b43_set_status(dev, B43_STAT_STARTED);
3712
3713 /* Start data flow (TX/RX). */
3714 b43_mac_enable(dev);
3715 b43_interrupt_enable(dev, dev->irq_savedstate);
3716
3717 /* Start maintainance work */
3718 b43_periodic_tasks_setup(dev);
3719
3720 b43dbg(dev->wl, "Wireless interface started\n");
3721 out:
3722 return err;
3723 }
3724
3725 /* Get PHY and RADIO versioning numbers */
3726 static int b43_phy_versioning(struct b43_wldev *dev)
3727 {
3728 struct b43_phy *phy = &dev->phy;
3729 u32 tmp;
3730 u8 analog_type;
3731 u8 phy_type;
3732 u8 phy_rev;
3733 u16 radio_manuf;
3734 u16 radio_ver;
3735 u16 radio_rev;
3736 int unsupported = 0;
3737
3738 /* Get PHY versioning */
3739 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3740 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3741 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3742 phy_rev = (tmp & B43_PHYVER_VERSION);
3743 switch (phy_type) {
3744 case B43_PHYTYPE_A:
3745 if (phy_rev >= 4)
3746 unsupported = 1;
3747 break;
3748 case B43_PHYTYPE_B:
3749 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3750 && phy_rev != 7)
3751 unsupported = 1;
3752 break;
3753 case B43_PHYTYPE_G:
3754 if (phy_rev > 9)
3755 unsupported = 1;
3756 break;
3757 #ifdef CONFIG_B43_NPHY
3758 case B43_PHYTYPE_N:
3759 if (phy_rev > 1)
3760 unsupported = 1;
3761 break;
3762 #endif
3763 default:
3764 unsupported = 1;
3765 };
3766 if (unsupported) {
3767 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3768 "(Analog %u, Type %u, Revision %u)\n",
3769 analog_type, phy_type, phy_rev);
3770 return -EOPNOTSUPP;
3771 }
3772 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3773 analog_type, phy_type, phy_rev);
3774
3775 /* Get RADIO versioning */
3776 if (dev->dev->bus->chip_id == 0x4317) {
3777 if (dev->dev->bus->chip_rev == 0)
3778 tmp = 0x3205017F;
3779 else if (dev->dev->bus->chip_rev == 1)
3780 tmp = 0x4205017F;
3781 else
3782 tmp = 0x5205017F;
3783 } else {
3784 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3785 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3786 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3787 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3788 }
3789 radio_manuf = (tmp & 0x00000FFF);
3790 radio_ver = (tmp & 0x0FFFF000) >> 12;
3791 radio_rev = (tmp & 0xF0000000) >> 28;
3792 if (radio_manuf != 0x17F /* Broadcom */)
3793 unsupported = 1;
3794 switch (phy_type) {
3795 case B43_PHYTYPE_A:
3796 if (radio_ver != 0x2060)
3797 unsupported = 1;
3798 if (radio_rev != 1)
3799 unsupported = 1;
3800 if (radio_manuf != 0x17F)
3801 unsupported = 1;
3802 break;
3803 case B43_PHYTYPE_B:
3804 if ((radio_ver & 0xFFF0) != 0x2050)
3805 unsupported = 1;
3806 break;
3807 case B43_PHYTYPE_G:
3808 if (radio_ver != 0x2050)
3809 unsupported = 1;
3810 break;
3811 case B43_PHYTYPE_N:
3812 if (radio_ver != 0x2055)
3813 unsupported = 1;
3814 break;
3815 default:
3816 B43_WARN_ON(1);
3817 }
3818 if (unsupported) {
3819 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3820 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3821 radio_manuf, radio_ver, radio_rev);
3822 return -EOPNOTSUPP;
3823 }
3824 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3825 radio_manuf, radio_ver, radio_rev);
3826
3827 phy->radio_manuf = radio_manuf;
3828 phy->radio_ver = radio_ver;
3829 phy->radio_rev = radio_rev;
3830
3831 phy->analog = analog_type;
3832 phy->type = phy_type;
3833 phy->rev = phy_rev;
3834
3835 return 0;
3836 }
3837
3838 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3839 struct b43_phy *phy)
3840 {
3841 struct b43_txpower_lo_control *lo;
3842 int i;
3843
3844 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3845 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3846
3847 phy->aci_enable = 0;
3848 phy->aci_wlan_automatic = 0;
3849 phy->aci_hw_rssi = 0;
3850
3851 phy->radio_off_context.valid = 0;
3852
3853 lo = phy->lo_control;
3854 if (lo) {
3855 memset(lo, 0, sizeof(*(phy->lo_control)));
3856 lo->tx_bias = 0xFF;
3857 INIT_LIST_HEAD(&lo->calib_list);
3858 }
3859 phy->max_lb_gain = 0;
3860 phy->trsw_rx_gain = 0;
3861 phy->txpwr_offset = 0;
3862
3863 /* NRSSI */
3864 phy->nrssislope = 0;
3865 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3866 phy->nrssi[i] = -1000;
3867 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3868 phy->nrssi_lt[i] = i;
3869
3870 phy->lofcal = 0xFFFF;
3871 phy->initval = 0xFFFF;
3872
3873 phy->interfmode = B43_INTERFMODE_NONE;
3874 phy->channel = 0xFF;
3875
3876 phy->hardware_power_control = !!modparam_hwpctl;
3877
3878 /* PHY TX errors counter. */
3879 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3880
3881 /* OFDM-table address caching. */
3882 phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3883 }
3884
3885 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3886 {
3887 dev->dfq_valid = 0;
3888
3889 /* Assume the radio is enabled. If it's not enabled, the state will
3890 * immediately get fixed on the first periodic work run. */
3891 dev->radio_hw_enable = 1;
3892
3893 /* Stats */
3894 memset(&dev->stats, 0, sizeof(dev->stats));
3895
3896 setup_struct_phy_for_init(dev, &dev->phy);
3897
3898 /* IRQ related flags */
3899 dev->irq_reason = 0;
3900 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3901 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3902
3903 dev->mac_suspended = 1;
3904
3905 /* Noise calculation context */
3906 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3907 }
3908
3909 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3910 {
3911 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3912 u64 hf;
3913
3914 if (!modparam_btcoex)
3915 return;
3916 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3917 return;
3918 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3919 return;
3920
3921 hf = b43_hf_read(dev);
3922 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3923 hf |= B43_HF_BTCOEXALT;
3924 else
3925 hf |= B43_HF_BTCOEX;
3926 b43_hf_write(dev, hf);
3927 }
3928
3929 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3930 {
3931 if (!modparam_btcoex)
3932 return;
3933 //TODO
3934 }
3935
3936 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3937 {
3938 #ifdef CONFIG_SSB_DRIVER_PCICORE
3939 struct ssb_bus *bus = dev->dev->bus;
3940 u32 tmp;
3941
3942 if (bus->pcicore.dev &&
3943 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3944 bus->pcicore.dev->id.revision <= 5) {
3945 /* IMCFGLO timeouts workaround. */
3946 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3947 tmp &= ~SSB_IMCFGLO_REQTO;
3948 tmp &= ~SSB_IMCFGLO_SERTO;
3949 switch (bus->bustype) {
3950 case SSB_BUSTYPE_PCI:
3951 case SSB_BUSTYPE_PCMCIA:
3952 tmp |= 0x32;
3953 break;
3954 case SSB_BUSTYPE_SSB:
3955 tmp |= 0x53;
3956 break;
3957 }
3958 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3959 }
3960 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3961 }
3962
3963 /* Write the short and long frame retry limit values. */
3964 static void b43_set_retry_limits(struct b43_wldev *dev,
3965 unsigned int short_retry,
3966 unsigned int long_retry)
3967 {
3968 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3969 * the chip-internal counter. */
3970 short_retry = min(short_retry, (unsigned int)0xF);
3971 long_retry = min(long_retry, (unsigned int)0xF);
3972
3973 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3974 short_retry);
3975 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3976 long_retry);
3977 }
3978
3979 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
3980 {
3981 u16 pu_delay;
3982
3983 /* The time value is in microseconds. */
3984 if (dev->phy.type == B43_PHYTYPE_A)
3985 pu_delay = 3700;
3986 else
3987 pu_delay = 1050;
3988 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS) || idle)
3989 pu_delay = 500;
3990 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3991 pu_delay = max(pu_delay, (u16)2400);
3992
3993 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
3994 }
3995
3996 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3997 static void b43_set_pretbtt(struct b43_wldev *dev)
3998 {
3999 u16 pretbtt;
4000
4001 /* The time value is in microseconds. */
4002 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) {
4003 pretbtt = 2;
4004 } else {
4005 if (dev->phy.type == B43_PHYTYPE_A)
4006 pretbtt = 120;
4007 else
4008 pretbtt = 250;
4009 }
4010 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4011 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4012 }
4013
4014 /* Shutdown a wireless core */
4015 /* Locking: wl->mutex */
4016 static void b43_wireless_core_exit(struct b43_wldev *dev)
4017 {
4018 struct b43_phy *phy = &dev->phy;
4019 u32 macctl;
4020
4021 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
4022 if (b43_status(dev) != B43_STAT_INITIALIZED)
4023 return;
4024 b43_set_status(dev, B43_STAT_UNINIT);
4025
4026 /* Stop the microcode PSM. */
4027 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4028 macctl &= ~B43_MACCTL_PSM_RUN;
4029 macctl |= B43_MACCTL_PSM_JMP0;
4030 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4031
4032 if (!dev->suspend_in_progress) {
4033 b43_leds_exit(dev);
4034 b43_rng_exit(dev->wl);
4035 }
4036 b43_dma_free(dev);
4037 b43_pio_free(dev);
4038 b43_chip_exit(dev);
4039 b43_radio_turn_off(dev, 1);
4040 b43_switch_analog(dev, 0);
4041 if (phy->dyn_tssi_tbl)
4042 kfree(phy->tssi2dbm);
4043 kfree(phy->lo_control);
4044 phy->lo_control = NULL;
4045 if (dev->wl->current_beacon) {
4046 dev_kfree_skb_any(dev->wl->current_beacon);
4047 dev->wl->current_beacon = NULL;
4048 }
4049
4050 ssb_device_disable(dev->dev, 0);
4051 ssb_bus_may_powerdown(dev->dev->bus);
4052 }
4053
4054 /* Initialize a wireless core */
4055 static int b43_wireless_core_init(struct b43_wldev *dev)
4056 {
4057 struct b43_wl *wl = dev->wl;
4058 struct ssb_bus *bus = dev->dev->bus;
4059 struct ssb_sprom *sprom = &bus->sprom;
4060 struct b43_phy *phy = &dev->phy;
4061 int err;
4062 u64 hf;
4063 u32 tmp;
4064
4065 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4066
4067 err = ssb_bus_powerup(bus, 0);
4068 if (err)
4069 goto out;
4070 if (!ssb_device_is_enabled(dev->dev)) {
4071 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4072 b43_wireless_core_reset(dev, tmp);
4073 }
4074
4075 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
4076 phy->lo_control =
4077 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
4078 if (!phy->lo_control) {
4079 err = -ENOMEM;
4080 goto err_busdown;
4081 }
4082 }
4083 setup_struct_wldev_for_init(dev);
4084
4085 err = b43_phy_init_tssi2dbm_table(dev);
4086 if (err)
4087 goto err_kfree_lo_control;
4088
4089 /* Enable IRQ routing to this device. */
4090 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4091
4092 b43_imcfglo_timeouts_workaround(dev);
4093 b43_bluetooth_coext_disable(dev);
4094 b43_phy_early_init(dev);
4095 err = b43_chip_init(dev);
4096 if (err)
4097 goto err_kfree_tssitbl;
4098 b43_shm_write16(dev, B43_SHM_SHARED,
4099 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4100 hf = b43_hf_read(dev);
4101 if (phy->type == B43_PHYTYPE_G) {
4102 hf |= B43_HF_SYMW;
4103 if (phy->rev == 1)
4104 hf |= B43_HF_GDCW;
4105 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4106 hf |= B43_HF_OFDMPABOOST;
4107 } else if (phy->type == B43_PHYTYPE_B) {
4108 hf |= B43_HF_SYMW;
4109 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
4110 hf &= ~B43_HF_GDCW;
4111 }
4112 b43_hf_write(dev, hf);
4113
4114 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4115 B43_DEFAULT_LONG_RETRY_LIMIT);
4116 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4117 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4118
4119 /* Disable sending probe responses from firmware.
4120 * Setting the MaxTime to one usec will always trigger
4121 * a timeout, so we never send any probe resp.
4122 * A timeout of zero is infinite. */
4123 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4124
4125 b43_rate_memory_init(dev);
4126 b43_set_phytxctl_defaults(dev);
4127
4128 /* Minimum Contention Window */
4129 if (phy->type == B43_PHYTYPE_B) {
4130 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4131 } else {
4132 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4133 }
4134 /* Maximum Contention Window */
4135 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4136
4137 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4138 dev->__using_pio_transfers = 1;
4139 err = b43_pio_init(dev);
4140 } else {
4141 dev->__using_pio_transfers = 0;
4142 err = b43_dma_init(dev);
4143 }
4144 if (err)
4145 goto err_chip_exit;
4146 b43_qos_init(dev);
4147 b43_set_synth_pu_delay(dev, 1);
4148 b43_bluetooth_coext_enable(dev);
4149
4150 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
4151 b43_upload_card_macaddress(dev);
4152 b43_security_init(dev);
4153 if (!dev->suspend_in_progress)
4154 b43_rng_init(wl);
4155
4156 b43_set_status(dev, B43_STAT_INITIALIZED);
4157
4158 if (!dev->suspend_in_progress)
4159 b43_leds_init(dev);
4160 out:
4161 return err;
4162
4163 err_chip_exit:
4164 b43_chip_exit(dev);
4165 err_kfree_tssitbl:
4166 if (phy->dyn_tssi_tbl)
4167 kfree(phy->tssi2dbm);
4168 err_kfree_lo_control:
4169 kfree(phy->lo_control);
4170 phy->lo_control = NULL;
4171 err_busdown:
4172 ssb_bus_may_powerdown(bus);
4173 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4174 return err;
4175 }
4176
4177 static int b43_op_add_interface(struct ieee80211_hw *hw,
4178 struct ieee80211_if_init_conf *conf)
4179 {
4180 struct b43_wl *wl = hw_to_b43_wl(hw);
4181 struct b43_wldev *dev;
4182 unsigned long flags;
4183 int err = -EOPNOTSUPP;
4184
4185 /* TODO: allow WDS/AP devices to coexist */
4186
4187 if (conf->type != IEEE80211_IF_TYPE_AP &&
4188 conf->type != IEEE80211_IF_TYPE_MESH_POINT &&
4189 conf->type != IEEE80211_IF_TYPE_STA &&
4190 conf->type != IEEE80211_IF_TYPE_WDS &&
4191 conf->type != IEEE80211_IF_TYPE_IBSS)
4192 return -EOPNOTSUPP;
4193
4194 mutex_lock(&wl->mutex);
4195 if (wl->operating)
4196 goto out_mutex_unlock;
4197
4198 b43dbg(wl, "Adding Interface type %d\n", conf->type);
4199
4200 dev = wl->current_dev;
4201 wl->operating = 1;
4202 wl->vif = conf->vif;
4203 wl->if_type = conf->type;
4204 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4205
4206 spin_lock_irqsave(&wl->irq_lock, flags);
4207 b43_adjust_opmode(dev);
4208 b43_set_pretbtt(dev);
4209 b43_set_synth_pu_delay(dev, 0);
4210 b43_upload_card_macaddress(dev);
4211 spin_unlock_irqrestore(&wl->irq_lock, flags);
4212
4213 err = 0;
4214 out_mutex_unlock:
4215 mutex_unlock(&wl->mutex);
4216
4217 return err;
4218 }
4219
4220 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4221 struct ieee80211_if_init_conf *conf)
4222 {
4223 struct b43_wl *wl = hw_to_b43_wl(hw);
4224 struct b43_wldev *dev = wl->current_dev;
4225 unsigned long flags;
4226
4227 b43dbg(wl, "Removing Interface type %d\n", conf->type);
4228
4229 mutex_lock(&wl->mutex);
4230
4231 B43_WARN_ON(!wl->operating);
4232 B43_WARN_ON(wl->vif != conf->vif);
4233 wl->vif = NULL;
4234
4235 wl->operating = 0;
4236
4237 spin_lock_irqsave(&wl->irq_lock, flags);
4238 b43_adjust_opmode(dev);
4239 memset(wl->mac_addr, 0, ETH_ALEN);
4240 b43_upload_card_macaddress(dev);
4241 spin_unlock_irqrestore(&wl->irq_lock, flags);
4242
4243 mutex_unlock(&wl->mutex);
4244 }
4245
4246 static int b43_op_start(struct ieee80211_hw *hw)
4247 {
4248 struct b43_wl *wl = hw_to_b43_wl(hw);
4249 struct b43_wldev *dev = wl->current_dev;
4250 int did_init = 0;
4251 int err = 0;
4252 bool do_rfkill_exit = 0;
4253
4254 /* Kill all old instance specific information to make sure
4255 * the card won't use it in the short timeframe between start
4256 * and mac80211 reconfiguring it. */
4257 memset(wl->bssid, 0, ETH_ALEN);
4258 memset(wl->mac_addr, 0, ETH_ALEN);
4259 wl->filter_flags = 0;
4260 wl->radiotap_enabled = 0;
4261 b43_qos_clear(wl);
4262 wl->beacon0_uploaded = 0;
4263 wl->beacon1_uploaded = 0;
4264 wl->beacon_templates_virgin = 1;
4265
4266 /* First register RFkill.
4267 * LEDs that are registered later depend on it. */
4268 b43_rfkill_init(dev);
4269
4270 mutex_lock(&wl->mutex);
4271
4272 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4273 err = b43_wireless_core_init(dev);
4274 if (err) {
4275 do_rfkill_exit = 1;
4276 goto out_mutex_unlock;
4277 }
4278 did_init = 1;
4279 }
4280
4281 if (b43_status(dev) < B43_STAT_STARTED) {
4282 err = b43_wireless_core_start(dev);
4283 if (err) {
4284 if (did_init)
4285 b43_wireless_core_exit(dev);
4286 do_rfkill_exit = 1;
4287 goto out_mutex_unlock;
4288 }
4289 }
4290
4291 out_mutex_unlock:
4292 mutex_unlock(&wl->mutex);
4293
4294 if (do_rfkill_exit)
4295 b43_rfkill_exit(dev);
4296
4297 return err;
4298 }
4299
4300 static void b43_op_stop(struct ieee80211_hw *hw)
4301 {
4302 struct b43_wl *wl = hw_to_b43_wl(hw);
4303 struct b43_wldev *dev = wl->current_dev;
4304
4305 b43_rfkill_exit(dev);
4306 cancel_work_sync(&(wl->qos_update_work));
4307 cancel_work_sync(&(wl->beacon_update_trigger));
4308
4309 mutex_lock(&wl->mutex);
4310 if (b43_status(dev) >= B43_STAT_STARTED)
4311 b43_wireless_core_stop(dev);
4312 b43_wireless_core_exit(dev);
4313 mutex_unlock(&wl->mutex);
4314 }
4315
4316 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
4317 u32 short_retry_limit, u32 long_retry_limit)
4318 {
4319 struct b43_wl *wl = hw_to_b43_wl(hw);
4320 struct b43_wldev *dev;
4321 int err = 0;
4322
4323 mutex_lock(&wl->mutex);
4324 dev = wl->current_dev;
4325 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
4326 err = -ENODEV;
4327 goto out_unlock;
4328 }
4329 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
4330 out_unlock:
4331 mutex_unlock(&wl->mutex);
4332
4333 return err;
4334 }
4335
4336 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set)
4337 {
4338 struct b43_wl *wl = hw_to_b43_wl(hw);
4339 struct sk_buff *beacon;
4340 unsigned long flags;
4341
4342 /* We could modify the existing beacon and set the aid bit in
4343 * the TIM field, but that would probably require resizing and
4344 * moving of data within the beacon template.
4345 * Simply request a new beacon and let mac80211 do the hard work. */
4346 beacon = ieee80211_beacon_get(hw, wl->vif);
4347 if (unlikely(!beacon))
4348 return -ENOMEM;
4349 spin_lock_irqsave(&wl->irq_lock, flags);
4350 b43_update_templates(wl, beacon);
4351 spin_unlock_irqrestore(&wl->irq_lock, flags);
4352
4353 return 0;
4354 }
4355
4356 static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw,
4357 struct sk_buff *beacon)
4358 {
4359 struct b43_wl *wl = hw_to_b43_wl(hw);
4360 unsigned long flags;
4361
4362 spin_lock_irqsave(&wl->irq_lock, flags);
4363 b43_update_templates(wl, beacon);
4364 spin_unlock_irqrestore(&wl->irq_lock, flags);
4365
4366 return 0;
4367 }
4368
4369 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4370 struct ieee80211_vif *vif,
4371 enum sta_notify_cmd notify_cmd,
4372 const u8 *addr)
4373 {
4374 struct b43_wl *wl = hw_to_b43_wl(hw);
4375
4376 B43_WARN_ON(!vif || wl->vif != vif);
4377 }
4378
4379 static const struct ieee80211_ops b43_hw_ops = {
4380 .tx = b43_op_tx,
4381 .conf_tx = b43_op_conf_tx,
4382 .add_interface = b43_op_add_interface,
4383 .remove_interface = b43_op_remove_interface,
4384 .config = b43_op_config,
4385 .config_interface = b43_op_config_interface,
4386 .configure_filter = b43_op_configure_filter,
4387 .set_key = b43_op_set_key,
4388 .get_stats = b43_op_get_stats,
4389 .get_tx_stats = b43_op_get_tx_stats,
4390 .start = b43_op_start,
4391 .stop = b43_op_stop,
4392 .set_retry_limit = b43_op_set_retry_limit,
4393 .set_tim = b43_op_beacon_set_tim,
4394 .beacon_update = b43_op_ibss_beacon_update,
4395 .sta_notify = b43_op_sta_notify,
4396 };
4397
4398 /* Hard-reset the chip. Do not call this directly.
4399 * Use b43_controller_restart()
4400 */
4401 static void b43_chip_reset(struct work_struct *work)
4402 {
4403 struct b43_wldev *dev =
4404 container_of(work, struct b43_wldev, restart_work);
4405 struct b43_wl *wl = dev->wl;
4406 int err = 0;
4407 int prev_status;
4408
4409 mutex_lock(&wl->mutex);
4410
4411 prev_status = b43_status(dev);
4412 /* Bring the device down... */
4413 if (prev_status >= B43_STAT_STARTED)
4414 b43_wireless_core_stop(dev);
4415 if (prev_status >= B43_STAT_INITIALIZED)
4416 b43_wireless_core_exit(dev);
4417
4418 /* ...and up again. */
4419 if (prev_status >= B43_STAT_INITIALIZED) {
4420 err = b43_wireless_core_init(dev);
4421 if (err)
4422 goto out;
4423 }
4424 if (prev_status >= B43_STAT_STARTED) {
4425 err = b43_wireless_core_start(dev);
4426 if (err) {
4427 b43_wireless_core_exit(dev);
4428 goto out;
4429 }
4430 }
4431 out:
4432 if (err)
4433 wl->current_dev = NULL; /* Failed to init the dev. */
4434 mutex_unlock(&wl->mutex);
4435 if (err)
4436 b43err(wl, "Controller restart FAILED\n");
4437 else
4438 b43info(wl, "Controller restarted\n");
4439 }
4440
4441 static int b43_setup_bands(struct b43_wldev *dev,
4442 bool have_2ghz_phy, bool have_5ghz_phy)
4443 {
4444 struct ieee80211_hw *hw = dev->wl->hw;
4445
4446 if (have_2ghz_phy)
4447 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4448 if (dev->phy.type == B43_PHYTYPE_N) {
4449 if (have_5ghz_phy)
4450 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4451 } else {
4452 if (have_5ghz_phy)
4453 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4454 }
4455
4456 dev->phy.supports_2ghz = have_2ghz_phy;
4457 dev->phy.supports_5ghz = have_5ghz_phy;
4458
4459 return 0;
4460 }
4461
4462 static void b43_wireless_core_detach(struct b43_wldev *dev)
4463 {
4464 /* We release firmware that late to not be required to re-request
4465 * is all the time when we reinit the core. */
4466 b43_release_firmware(dev);
4467 }
4468
4469 static int b43_wireless_core_attach(struct b43_wldev *dev)
4470 {
4471 struct b43_wl *wl = dev->wl;
4472 struct ssb_bus *bus = dev->dev->bus;
4473 struct pci_dev *pdev = bus->host_pci;
4474 int err;
4475 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4476 u32 tmp;
4477
4478 /* Do NOT do any device initialization here.
4479 * Do it in wireless_core_init() instead.
4480 * This function is for gathering basic information about the HW, only.
4481 * Also some structs may be set up here. But most likely you want to have
4482 * that in core_init(), too.
4483 */
4484
4485 err = ssb_bus_powerup(bus, 0);
4486 if (err) {
4487 b43err(wl, "Bus powerup failed\n");
4488 goto out;
4489 }
4490 /* Get the PHY type. */
4491 if (dev->dev->id.revision >= 5) {
4492 u32 tmshigh;
4493
4494 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4495 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4496 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4497 } else
4498 B43_WARN_ON(1);
4499
4500 dev->phy.gmode = have_2ghz_phy;
4501 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4502 b43_wireless_core_reset(dev, tmp);
4503
4504 err = b43_phy_versioning(dev);
4505 if (err)
4506 goto err_powerdown;
4507 /* Check if this device supports multiband. */
4508 if (!pdev ||
4509 (pdev->device != 0x4312 &&
4510 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4511 /* No multiband support. */
4512 have_2ghz_phy = 0;
4513 have_5ghz_phy = 0;
4514 switch (dev->phy.type) {
4515 case B43_PHYTYPE_A:
4516 have_5ghz_phy = 1;
4517 break;
4518 case B43_PHYTYPE_G:
4519 case B43_PHYTYPE_N:
4520 have_2ghz_phy = 1;
4521 break;
4522 default:
4523 B43_WARN_ON(1);
4524 }
4525 }
4526 if (dev->phy.type == B43_PHYTYPE_A) {
4527 /* FIXME */
4528 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4529 err = -EOPNOTSUPP;
4530 goto err_powerdown;
4531 }
4532 if (1 /* disable A-PHY */) {
4533 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4534 if (dev->phy.type != B43_PHYTYPE_N) {
4535 have_2ghz_phy = 1;
4536 have_5ghz_phy = 0;
4537 }
4538 }
4539
4540 dev->phy.gmode = have_2ghz_phy;
4541 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4542 b43_wireless_core_reset(dev, tmp);
4543
4544 err = b43_validate_chipaccess(dev);
4545 if (err)
4546 goto err_powerdown;
4547 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4548 if (err)
4549 goto err_powerdown;
4550
4551 /* Now set some default "current_dev" */
4552 if (!wl->current_dev)
4553 wl->current_dev = dev;
4554 INIT_WORK(&dev->restart_work, b43_chip_reset);
4555
4556 b43_radio_turn_off(dev, 1);
4557 b43_switch_analog(dev, 0);
4558 ssb_device_disable(dev->dev, 0);
4559 ssb_bus_may_powerdown(bus);
4560
4561 out:
4562 return err;
4563
4564 err_powerdown:
4565 ssb_bus_may_powerdown(bus);
4566 return err;
4567 }
4568
4569 static void b43_one_core_detach(struct ssb_device *dev)
4570 {
4571 struct b43_wldev *wldev;
4572 struct b43_wl *wl;
4573
4574 /* Do not cancel ieee80211-workqueue based work here.
4575 * See comment in b43_remove(). */
4576
4577 wldev = ssb_get_drvdata(dev);
4578 wl = wldev->wl;
4579 b43_debugfs_remove_device(wldev);
4580 b43_wireless_core_detach(wldev);
4581 list_del(&wldev->list);
4582 wl->nr_devs--;
4583 ssb_set_drvdata(dev, NULL);
4584 kfree(wldev);
4585 }
4586
4587 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4588 {
4589 struct b43_wldev *wldev;
4590 struct pci_dev *pdev;
4591 int err = -ENOMEM;
4592
4593 if (!list_empty(&wl->devlist)) {
4594 /* We are not the first core on this chip. */
4595 pdev = dev->bus->host_pci;
4596 /* Only special chips support more than one wireless
4597 * core, although some of the other chips have more than
4598 * one wireless core as well. Check for this and
4599 * bail out early.
4600 */
4601 if (!pdev ||
4602 ((pdev->device != 0x4321) &&
4603 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4604 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4605 return -ENODEV;
4606 }
4607 }
4608
4609 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4610 if (!wldev)
4611 goto out;
4612
4613 wldev->dev = dev;
4614 wldev->wl = wl;
4615 b43_set_status(wldev, B43_STAT_UNINIT);
4616 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4617 tasklet_init(&wldev->isr_tasklet,
4618 (void (*)(unsigned long))b43_interrupt_tasklet,
4619 (unsigned long)wldev);
4620 INIT_LIST_HEAD(&wldev->list);
4621
4622 err = b43_wireless_core_attach(wldev);
4623 if (err)
4624 goto err_kfree_wldev;
4625
4626 list_add(&wldev->list, &wl->devlist);
4627 wl->nr_devs++;
4628 ssb_set_drvdata(dev, wldev);
4629 b43_debugfs_add_device(wldev);
4630
4631 out:
4632 return err;
4633
4634 err_kfree_wldev:
4635 kfree(wldev);
4636 return err;
4637 }
4638
4639 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4640 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4641 (pdev->device == _device) && \
4642 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4643 (pdev->subsystem_device == _subdevice) )
4644
4645 static void b43_sprom_fixup(struct ssb_bus *bus)
4646 {
4647 struct pci_dev *pdev;
4648
4649 /* boardflags workarounds */
4650 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4651 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4652 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4653 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4654 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4655 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4656 if (bus->bustype == SSB_BUSTYPE_PCI) {
4657 pdev = bus->host_pci;
4658 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4659 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4660 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013))
4661 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4662 }
4663 }
4664
4665 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4666 {
4667 struct ieee80211_hw *hw = wl->hw;
4668
4669 ssb_set_devtypedata(dev, NULL);
4670 ieee80211_free_hw(hw);
4671 }
4672
4673 static int b43_wireless_init(struct ssb_device *dev)
4674 {
4675 struct ssb_sprom *sprom = &dev->bus->sprom;
4676 struct ieee80211_hw *hw;
4677 struct b43_wl *wl;
4678 int err = -ENOMEM;
4679
4680 b43_sprom_fixup(dev->bus);
4681
4682 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4683 if (!hw) {
4684 b43err(NULL, "Could not allocate ieee80211 device\n");
4685 goto out;
4686 }
4687
4688 /* fill hw info */
4689 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
4690 IEEE80211_HW_RX_INCLUDES_FCS |
4691 IEEE80211_HW_SIGNAL_DBM |
4692 IEEE80211_HW_NOISE_DBM;
4693
4694 hw->queues = b43_modparam_qos ? 4 : 1;
4695 SET_IEEE80211_DEV(hw, dev->dev);
4696 if (is_valid_ether_addr(sprom->et1mac))
4697 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4698 else
4699 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4700
4701 /* Get and initialize struct b43_wl */
4702 wl = hw_to_b43_wl(hw);
4703 memset(wl, 0, sizeof(*wl));
4704 wl->hw = hw;
4705 spin_lock_init(&wl->irq_lock);
4706 rwlock_init(&wl->tx_lock);
4707 spin_lock_init(&wl->leds_lock);
4708 spin_lock_init(&wl->shm_lock);
4709 mutex_init(&wl->mutex);
4710 INIT_LIST_HEAD(&wl->devlist);
4711 INIT_WORK(&wl->qos_update_work, b43_qos_update_work);
4712 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4713
4714 ssb_set_devtypedata(dev, wl);
4715 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4716 err = 0;
4717 out:
4718 return err;
4719 }
4720
4721 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4722 {
4723 struct b43_wl *wl;
4724 int err;
4725 int first = 0;
4726
4727 wl = ssb_get_devtypedata(dev);
4728 if (!wl) {
4729 /* Probing the first core. Must setup common struct b43_wl */
4730 first = 1;
4731 err = b43_wireless_init(dev);
4732 if (err)
4733 goto out;
4734 wl = ssb_get_devtypedata(dev);
4735 B43_WARN_ON(!wl);
4736 }
4737 err = b43_one_core_attach(dev, wl);
4738 if (err)
4739 goto err_wireless_exit;
4740
4741 if (first) {
4742 err = ieee80211_register_hw(wl->hw);
4743 if (err)
4744 goto err_one_core_detach;
4745 }
4746
4747 out:
4748 return err;
4749
4750 err_one_core_detach:
4751 b43_one_core_detach(dev);
4752 err_wireless_exit:
4753 if (first)
4754 b43_wireless_exit(dev, wl);
4755 return err;
4756 }
4757
4758 static void b43_remove(struct ssb_device *dev)
4759 {
4760 struct b43_wl *wl = ssb_get_devtypedata(dev);
4761 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4762
4763 /* We must cancel any work here before unregistering from ieee80211,
4764 * as the ieee80211 unreg will destroy the workqueue. */
4765 cancel_work_sync(&wldev->restart_work);
4766
4767 B43_WARN_ON(!wl);
4768 if (wl->current_dev == wldev)
4769 ieee80211_unregister_hw(wl->hw);
4770
4771 b43_one_core_detach(dev);
4772
4773 if (list_empty(&wl->devlist)) {
4774 /* Last core on the chip unregistered.
4775 * We can destroy common struct b43_wl.
4776 */
4777 b43_wireless_exit(dev, wl);
4778 }
4779 }
4780
4781 /* Perform a hardware reset. This can be called from any context. */
4782 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4783 {
4784 /* Must avoid requeueing, if we are in shutdown. */
4785 if (b43_status(dev) < B43_STAT_INITIALIZED)
4786 return;
4787 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4788 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4789 }
4790
4791 #ifdef CONFIG_PM
4792
4793 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4794 {
4795 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4796 struct b43_wl *wl = wldev->wl;
4797
4798 b43dbg(wl, "Suspending...\n");
4799
4800 mutex_lock(&wl->mutex);
4801 wldev->suspend_in_progress = true;
4802 wldev->suspend_init_status = b43_status(wldev);
4803 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4804 b43_wireless_core_stop(wldev);
4805 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4806 b43_wireless_core_exit(wldev);
4807 mutex_unlock(&wl->mutex);
4808
4809 b43dbg(wl, "Device suspended.\n");
4810
4811 return 0;
4812 }
4813
4814 static int b43_resume(struct ssb_device *dev)
4815 {
4816 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4817 struct b43_wl *wl = wldev->wl;
4818 int err = 0;
4819
4820 b43dbg(wl, "Resuming...\n");
4821
4822 mutex_lock(&wl->mutex);
4823 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4824 err = b43_wireless_core_init(wldev);
4825 if (err) {
4826 b43err(wl, "Resume failed at core init\n");
4827 goto out;
4828 }
4829 }
4830 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4831 err = b43_wireless_core_start(wldev);
4832 if (err) {
4833 b43_leds_exit(wldev);
4834 b43_rng_exit(wldev->wl);
4835 b43_wireless_core_exit(wldev);
4836 b43err(wl, "Resume failed at core start\n");
4837 goto out;
4838 }
4839 }
4840 b43dbg(wl, "Device resumed.\n");
4841 out:
4842 wldev->suspend_in_progress = false;
4843 mutex_unlock(&wl->mutex);
4844 return err;
4845 }
4846
4847 #else /* CONFIG_PM */
4848 # define b43_suspend NULL
4849 # define b43_resume NULL
4850 #endif /* CONFIG_PM */
4851
4852 static struct ssb_driver b43_ssb_driver = {
4853 .name = KBUILD_MODNAME,
4854 .id_table = b43_ssb_tbl,
4855 .probe = b43_probe,
4856 .remove = b43_remove,
4857 .suspend = b43_suspend,
4858 .resume = b43_resume,
4859 };
4860
4861 static void b43_print_driverinfo(void)
4862 {
4863 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4864 *feat_leds = "", *feat_rfkill = "";
4865
4866 #ifdef CONFIG_B43_PCI_AUTOSELECT
4867 feat_pci = "P";
4868 #endif
4869 #ifdef CONFIG_B43_PCMCIA
4870 feat_pcmcia = "M";
4871 #endif
4872 #ifdef CONFIG_B43_NPHY
4873 feat_nphy = "N";
4874 #endif
4875 #ifdef CONFIG_B43_LEDS
4876 feat_leds = "L";
4877 #endif
4878 #ifdef CONFIG_B43_RFKILL
4879 feat_rfkill = "R";
4880 #endif
4881 printk(KERN_INFO "Broadcom 43xx driver loaded "
4882 "[ Features: %s%s%s%s%s, Firmware-ID: "
4883 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4884 feat_pci, feat_pcmcia, feat_nphy,
4885 feat_leds, feat_rfkill);
4886 }
4887
4888 static int __init b43_init(void)
4889 {
4890 int err;
4891
4892 b43_debugfs_init();
4893 err = b43_pcmcia_init();
4894 if (err)
4895 goto err_dfs_exit;
4896 err = ssb_driver_register(&b43_ssb_driver);
4897 if (err)
4898 goto err_pcmcia_exit;
4899 b43_print_driverinfo();
4900
4901 return err;
4902
4903 err_pcmcia_exit:
4904 b43_pcmcia_exit();
4905 err_dfs_exit:
4906 b43_debugfs_exit();
4907 return err;
4908 }
4909
4910 static void __exit b43_exit(void)
4911 {
4912 ssb_driver_unregister(&b43_ssb_driver);
4913 b43_pcmcia_exit();
4914 b43_debugfs_exit();
4915 }
4916
4917 module_init(b43_init)
4918 module_exit(b43_exit)
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree