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b43: Add debugfs firmware debugging knob
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / b43 / main.c
blob82cca19137f4b52d4c9cf54e34366dce0db215f3
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 dev_kfree_skb_any(skb);
3032 return NETDEV_TX_OK;
3033 }
3034 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3035 if (unlikely(!dev))
3036 return NETDEV_TX_BUSY;
3037
3038 /* Transmissions on seperate queues can run concurrently. */
3039 read_lock_irqsave(&wl->tx_lock, flags);
3040
3041 err = -ENODEV;
3042 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3043 if (b43_using_pio_transfers(dev))
3044 err = b43_pio_tx(dev, skb);
3045 else
3046 err = b43_dma_tx(dev, skb);
3047 }
3048
3049 read_unlock_irqrestore(&wl->tx_lock, flags);
3050
3051 if (unlikely(err))
3052 return NETDEV_TX_BUSY;
3053 return NETDEV_TX_OK;
3054 }
3055
3056 /* Locking: wl->irq_lock */
3057 static void b43_qos_params_upload(struct b43_wldev *dev,
3058 const struct ieee80211_tx_queue_params *p,
3059 u16 shm_offset)
3060 {
3061 u16 params[B43_NR_QOSPARAMS];
3062 int cw_min, cw_max, aifs, bslots, tmp;
3063 unsigned int i;
3064
3065 const u16 aCWmin = 0x0001;
3066 const u16 aCWmax = 0x03FF;
3067
3068 /* Calculate the default values for the parameters, if needed. */
3069 switch (shm_offset) {
3070 case B43_QOS_VOICE:
3071 aifs = (p->aifs == -1) ? 2 : p->aifs;
3072 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 4 - 1) : p->cw_min;
3073 cw_max = (p->cw_max == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_max;
3074 break;
3075 case B43_QOS_VIDEO:
3076 aifs = (p->aifs == -1) ? 2 : p->aifs;
3077 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_min;
3078 cw_max = (p->cw_max == 0) ? aCWmin : p->cw_max;
3079 break;
3080 case B43_QOS_BESTEFFORT:
3081 aifs = (p->aifs == -1) ? 3 : p->aifs;
3082 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
3083 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
3084 break;
3085 case B43_QOS_BACKGROUND:
3086 aifs = (p->aifs == -1) ? 7 : p->aifs;
3087 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
3088 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
3089 break;
3090 default:
3091 B43_WARN_ON(1);
3092 return;
3093 }
3094 if (cw_min <= 0)
3095 cw_min = aCWmin;
3096 if (cw_max <= 0)
3097 cw_max = aCWmin;
3098 bslots = b43_read16(dev, B43_MMIO_RNG) % cw_min;
3099
3100 memset(&params, 0, sizeof(params));
3101
3102 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3103 params[B43_QOSPARAM_CWMIN] = cw_min;
3104 params[B43_QOSPARAM_CWMAX] = cw_max;
3105 params[B43_QOSPARAM_CWCUR] = cw_min;
3106 params[B43_QOSPARAM_AIFS] = aifs;
3107 params[B43_QOSPARAM_BSLOTS] = bslots;
3108 params[B43_QOSPARAM_REGGAP] = bslots + aifs;
3109
3110 for (i = 0; i < ARRAY_SIZE(params); i++) {
3111 if (i == B43_QOSPARAM_STATUS) {
3112 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3113 shm_offset + (i * 2));
3114 /* Mark the parameters as updated. */
3115 tmp |= 0x100;
3116 b43_shm_write16(dev, B43_SHM_SHARED,
3117 shm_offset + (i * 2),
3118 tmp);
3119 } else {
3120 b43_shm_write16(dev, B43_SHM_SHARED,
3121 shm_offset + (i * 2),
3122 params[i]);
3123 }
3124 }
3125 }
3126
3127 /* Update the QOS parameters in hardware. */
3128 static void b43_qos_update(struct b43_wldev *dev)
3129 {
3130 struct b43_wl *wl = dev->wl;
3131 struct b43_qos_params *params;
3132 unsigned long flags;
3133 unsigned int i;
3134
3135 /* Mapping of mac80211 queues to b43 SHM offsets. */
3136 static const u16 qos_shm_offsets[] = {
3137 [0] = B43_QOS_VOICE,
3138 [1] = B43_QOS_VIDEO,
3139 [2] = B43_QOS_BESTEFFORT,
3140 [3] = B43_QOS_BACKGROUND,
3141 };
3142 BUILD_BUG_ON(ARRAY_SIZE(qos_shm_offsets) != ARRAY_SIZE(wl->qos_params));
3143
3144 b43_mac_suspend(dev);
3145 spin_lock_irqsave(&wl->irq_lock, flags);
3146
3147 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3148 params = &(wl->qos_params[i]);
3149 if (params->need_hw_update) {
3150 b43_qos_params_upload(dev, &(params->p),
3151 qos_shm_offsets[i]);
3152 params->need_hw_update = 0;
3153 }
3154 }
3155
3156 spin_unlock_irqrestore(&wl->irq_lock, flags);
3157 b43_mac_enable(dev);
3158 }
3159
3160 static void b43_qos_clear(struct b43_wl *wl)
3161 {
3162 struct b43_qos_params *params;
3163 unsigned int i;
3164
3165 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3166 params = &(wl->qos_params[i]);
3167
3168 memset(&(params->p), 0, sizeof(params->p));
3169 params->p.aifs = -1;
3170 params->need_hw_update = 1;
3171 }
3172 }
3173
3174 /* Initialize the core's QOS capabilities */
3175 static void b43_qos_init(struct b43_wldev *dev)
3176 {
3177 struct b43_wl *wl = dev->wl;
3178 unsigned int i;
3179
3180 /* Upload the current QOS parameters. */
3181 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++)
3182 wl->qos_params[i].need_hw_update = 1;
3183 b43_qos_update(dev);
3184
3185 /* Enable QOS support. */
3186 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3187 b43_write16(dev, B43_MMIO_IFSCTL,
3188 b43_read16(dev, B43_MMIO_IFSCTL)
3189 | B43_MMIO_IFSCTL_USE_EDCF);
3190 }
3191
3192 static void b43_qos_update_work(struct work_struct *work)
3193 {
3194 struct b43_wl *wl = container_of(work, struct b43_wl, qos_update_work);
3195 struct b43_wldev *dev;
3196
3197 mutex_lock(&wl->mutex);
3198 dev = wl->current_dev;
3199 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED)))
3200 b43_qos_update(dev);
3201 mutex_unlock(&wl->mutex);
3202 }
3203
3204 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3205 const struct ieee80211_tx_queue_params *params)
3206 {
3207 struct b43_wl *wl = hw_to_b43_wl(hw);
3208 unsigned long flags;
3209 unsigned int queue = (unsigned int)_queue;
3210 struct b43_qos_params *p;
3211
3212 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3213 /* Queue not available or don't support setting
3214 * params on this queue. Return success to not
3215 * confuse mac80211. */
3216 return 0;
3217 }
3218
3219 spin_lock_irqsave(&wl->irq_lock, flags);
3220 p = &(wl->qos_params[queue]);
3221 memcpy(&(p->p), params, sizeof(p->p));
3222 p->need_hw_update = 1;
3223 spin_unlock_irqrestore(&wl->irq_lock, flags);
3224
3225 queue_work(hw->workqueue, &wl->qos_update_work);
3226
3227 return 0;
3228 }
3229
3230 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3231 struct ieee80211_tx_queue_stats *stats)
3232 {
3233 struct b43_wl *wl = hw_to_b43_wl(hw);
3234 struct b43_wldev *dev = wl->current_dev;
3235 unsigned long flags;
3236 int err = -ENODEV;
3237
3238 if (!dev)
3239 goto out;
3240 spin_lock_irqsave(&wl->irq_lock, flags);
3241 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3242 if (b43_using_pio_transfers(dev))
3243 b43_pio_get_tx_stats(dev, stats);
3244 else
3245 b43_dma_get_tx_stats(dev, stats);
3246 err = 0;
3247 }
3248 spin_unlock_irqrestore(&wl->irq_lock, flags);
3249 out:
3250 return err;
3251 }
3252
3253 static int b43_op_get_stats(struct ieee80211_hw *hw,
3254 struct ieee80211_low_level_stats *stats)
3255 {
3256 struct b43_wl *wl = hw_to_b43_wl(hw);
3257 unsigned long flags;
3258
3259 spin_lock_irqsave(&wl->irq_lock, flags);
3260 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3261 spin_unlock_irqrestore(&wl->irq_lock, flags);
3262
3263 return 0;
3264 }
3265
3266 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3267 {
3268 struct ssb_device *sdev = dev->dev;
3269 u32 tmslow;
3270
3271 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3272 tmslow &= ~B43_TMSLOW_GMODE;
3273 tmslow |= B43_TMSLOW_PHYRESET;
3274 tmslow |= SSB_TMSLOW_FGC;
3275 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3276 msleep(1);
3277
3278 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3279 tmslow &= ~SSB_TMSLOW_FGC;
3280 tmslow |= B43_TMSLOW_PHYRESET;
3281 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3282 msleep(1);
3283 }
3284
3285 static const char * band_to_string(enum ieee80211_band band)
3286 {
3287 switch (band) {
3288 case IEEE80211_BAND_5GHZ:
3289 return "5";
3290 case IEEE80211_BAND_2GHZ:
3291 return "2.4";
3292 default:
3293 break;
3294 }
3295 B43_WARN_ON(1);
3296 return "";
3297 }
3298
3299 /* Expects wl->mutex locked */
3300 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3301 {
3302 struct b43_wldev *up_dev = NULL;
3303 struct b43_wldev *down_dev;
3304 struct b43_wldev *d;
3305 int err;
3306 bool gmode;
3307 int prev_status;
3308
3309 /* Find a device and PHY which supports the band. */
3310 list_for_each_entry(d, &wl->devlist, list) {
3311 switch (chan->band) {
3312 case IEEE80211_BAND_5GHZ:
3313 if (d->phy.supports_5ghz) {
3314 up_dev = d;
3315 gmode = 0;
3316 }
3317 break;
3318 case IEEE80211_BAND_2GHZ:
3319 if (d->phy.supports_2ghz) {
3320 up_dev = d;
3321 gmode = 1;
3322 }
3323 break;
3324 default:
3325 B43_WARN_ON(1);
3326 return -EINVAL;
3327 }
3328 if (up_dev)
3329 break;
3330 }
3331 if (!up_dev) {
3332 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3333 band_to_string(chan->band));
3334 return -ENODEV;
3335 }
3336 if ((up_dev == wl->current_dev) &&
3337 (!!wl->current_dev->phy.gmode == !!gmode)) {
3338 /* This device is already running. */
3339 return 0;
3340 }
3341 b43dbg(wl, "Switching to %s-GHz band\n",
3342 band_to_string(chan->band));
3343 down_dev = wl->current_dev;
3344
3345 prev_status = b43_status(down_dev);
3346 /* Shutdown the currently running core. */
3347 if (prev_status >= B43_STAT_STARTED)
3348 b43_wireless_core_stop(down_dev);
3349 if (prev_status >= B43_STAT_INITIALIZED)
3350 b43_wireless_core_exit(down_dev);
3351
3352 if (down_dev != up_dev) {
3353 /* We switch to a different core, so we put PHY into
3354 * RESET on the old core. */
3355 b43_put_phy_into_reset(down_dev);
3356 }
3357
3358 /* Now start the new core. */
3359 up_dev->phy.gmode = gmode;
3360 if (prev_status >= B43_STAT_INITIALIZED) {
3361 err = b43_wireless_core_init(up_dev);
3362 if (err) {
3363 b43err(wl, "Fatal: Could not initialize device for "
3364 "selected %s-GHz band\n",
3365 band_to_string(chan->band));
3366 goto init_failure;
3367 }
3368 }
3369 if (prev_status >= B43_STAT_STARTED) {
3370 err = b43_wireless_core_start(up_dev);
3371 if (err) {
3372 b43err(wl, "Fatal: Coult not start device for "
3373 "selected %s-GHz band\n",
3374 band_to_string(chan->band));
3375 b43_wireless_core_exit(up_dev);
3376 goto init_failure;
3377 }
3378 }
3379 B43_WARN_ON(b43_status(up_dev) != prev_status);
3380
3381 wl->current_dev = up_dev;
3382
3383 return 0;
3384 init_failure:
3385 /* Whoops, failed to init the new core. No core is operating now. */
3386 wl->current_dev = NULL;
3387 return err;
3388 }
3389
3390 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3391 {
3392 struct b43_wl *wl = hw_to_b43_wl(hw);
3393 struct b43_wldev *dev;
3394 struct b43_phy *phy;
3395 unsigned long flags;
3396 int antenna;
3397 int err = 0;
3398 u32 savedirqs;
3399
3400 mutex_lock(&wl->mutex);
3401
3402 /* Switch the band (if necessary). This might change the active core. */
3403 err = b43_switch_band(wl, conf->channel);
3404 if (err)
3405 goto out_unlock_mutex;
3406 dev = wl->current_dev;
3407 phy = &dev->phy;
3408
3409 /* Disable IRQs while reconfiguring the device.
3410 * This makes it possible to drop the spinlock throughout
3411 * the reconfiguration process. */
3412 spin_lock_irqsave(&wl->irq_lock, flags);
3413 if (b43_status(dev) < B43_STAT_STARTED) {
3414 spin_unlock_irqrestore(&wl->irq_lock, flags);
3415 goto out_unlock_mutex;
3416 }
3417 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
3418 spin_unlock_irqrestore(&wl->irq_lock, flags);
3419 b43_synchronize_irq(dev);
3420
3421 /* Switch to the requested channel.
3422 * The firmware takes care of races with the TX handler. */
3423 if (conf->channel->hw_value != phy->channel)
3424 b43_radio_selectchannel(dev, conf->channel->hw_value, 0);
3425
3426 /* Enable/Disable ShortSlot timing. */
3427 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
3428 dev->short_slot) {
3429 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
3430 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
3431 b43_short_slot_timing_enable(dev);
3432 else
3433 b43_short_slot_timing_disable(dev);
3434 }
3435
3436 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3437
3438 /* Adjust the desired TX power level. */
3439 if (conf->power_level != 0) {
3440 if (conf->power_level != phy->power_level) {
3441 phy->power_level = conf->power_level;
3442 b43_phy_xmitpower(dev);
3443 }
3444 }
3445
3446 /* Antennas for RX and management frame TX. */
3447 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
3448 b43_mgmtframe_txantenna(dev, antenna);
3449 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
3450 b43_set_rx_antenna(dev, antenna);
3451
3452 /* Update templates for AP/mesh mode. */
3453 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP) ||
3454 b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT))
3455 b43_set_beacon_int(dev, conf->beacon_int);
3456
3457 if (!!conf->radio_enabled != phy->radio_on) {
3458 if (conf->radio_enabled) {
3459 b43_radio_turn_on(dev);
3460 b43info(dev->wl, "Radio turned on by software\n");
3461 if (!dev->radio_hw_enable) {
3462 b43info(dev->wl, "The hardware RF-kill button "
3463 "still turns the radio physically off. "
3464 "Press the button to turn it on.\n");
3465 }
3466 } else {
3467 b43_radio_turn_off(dev, 0);
3468 b43info(dev->wl, "Radio turned off by software\n");
3469 }
3470 }
3471
3472 spin_lock_irqsave(&wl->irq_lock, flags);
3473 b43_interrupt_enable(dev, savedirqs);
3474 mmiowb();
3475 spin_unlock_irqrestore(&wl->irq_lock, flags);
3476 out_unlock_mutex:
3477 mutex_unlock(&wl->mutex);
3478
3479 return err;
3480 }
3481
3482 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3483 const u8 *local_addr, const u8 *addr,
3484 struct ieee80211_key_conf *key)
3485 {
3486 struct b43_wl *wl = hw_to_b43_wl(hw);
3487 struct b43_wldev *dev;
3488 unsigned long flags;
3489 u8 algorithm;
3490 u8 index;
3491 int err;
3492 DECLARE_MAC_BUF(mac);
3493
3494 if (modparam_nohwcrypt)
3495 return -ENOSPC; /* User disabled HW-crypto */
3496
3497 mutex_lock(&wl->mutex);
3498 spin_lock_irqsave(&wl->irq_lock, flags);
3499
3500 dev = wl->current_dev;
3501 err = -ENODEV;
3502 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3503 goto out_unlock;
3504
3505 if (dev->fw.pcm_request_failed) {
3506 /* We don't have firmware for the crypto engine.
3507 * Must use software-crypto. */
3508 err = -EOPNOTSUPP;
3509 goto out_unlock;
3510 }
3511
3512 err = -EINVAL;
3513 switch (key->alg) {
3514 case ALG_WEP:
3515 if (key->keylen == 5)
3516 algorithm = B43_SEC_ALGO_WEP40;
3517 else
3518 algorithm = B43_SEC_ALGO_WEP104;
3519 break;
3520 case ALG_TKIP:
3521 algorithm = B43_SEC_ALGO_TKIP;
3522 break;
3523 case ALG_CCMP:
3524 algorithm = B43_SEC_ALGO_AES;
3525 break;
3526 default:
3527 B43_WARN_ON(1);
3528 goto out_unlock;
3529 }
3530 index = (u8) (key->keyidx);
3531 if (index > 3)
3532 goto out_unlock;
3533
3534 switch (cmd) {
3535 case SET_KEY:
3536 if (algorithm == B43_SEC_ALGO_TKIP) {
3537 /* FIXME: No TKIP hardware encryption for now. */
3538 err = -EOPNOTSUPP;
3539 goto out_unlock;
3540 }
3541
3542 if (is_broadcast_ether_addr(addr)) {
3543 /* addr is FF:FF:FF:FF:FF:FF for default keys */
3544 err = b43_key_write(dev, index, algorithm,
3545 key->key, key->keylen, NULL, key);
3546 } else {
3547 /*
3548 * either pairwise key or address is 00:00:00:00:00:00
3549 * for transmit-only keys
3550 */
3551 err = b43_key_write(dev, -1, algorithm,
3552 key->key, key->keylen, addr, key);
3553 }
3554 if (err)
3555 goto out_unlock;
3556
3557 if (algorithm == B43_SEC_ALGO_WEP40 ||
3558 algorithm == B43_SEC_ALGO_WEP104) {
3559 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3560 } else {
3561 b43_hf_write(dev,
3562 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3563 }
3564 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3565 break;
3566 case DISABLE_KEY: {
3567 err = b43_key_clear(dev, key->hw_key_idx);
3568 if (err)
3569 goto out_unlock;
3570 break;
3571 }
3572 default:
3573 B43_WARN_ON(1);
3574 }
3575 out_unlock:
3576 spin_unlock_irqrestore(&wl->irq_lock, flags);
3577 mutex_unlock(&wl->mutex);
3578 if (!err) {
3579 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3580 "mac: %s\n",
3581 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3582 print_mac(mac, addr));
3583 }
3584 return err;
3585 }
3586
3587 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3588 unsigned int changed, unsigned int *fflags,
3589 int mc_count, struct dev_addr_list *mc_list)
3590 {
3591 struct b43_wl *wl = hw_to_b43_wl(hw);
3592 struct b43_wldev *dev = wl->current_dev;
3593 unsigned long flags;
3594
3595 if (!dev) {
3596 *fflags = 0;
3597 return;
3598 }
3599
3600 spin_lock_irqsave(&wl->irq_lock, flags);
3601 *fflags &= FIF_PROMISC_IN_BSS |
3602 FIF_ALLMULTI |
3603 FIF_FCSFAIL |
3604 FIF_PLCPFAIL |
3605 FIF_CONTROL |
3606 FIF_OTHER_BSS |
3607 FIF_BCN_PRBRESP_PROMISC;
3608
3609 changed &= FIF_PROMISC_IN_BSS |
3610 FIF_ALLMULTI |
3611 FIF_FCSFAIL |
3612 FIF_PLCPFAIL |
3613 FIF_CONTROL |
3614 FIF_OTHER_BSS |
3615 FIF_BCN_PRBRESP_PROMISC;
3616
3617 wl->filter_flags = *fflags;
3618
3619 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3620 b43_adjust_opmode(dev);
3621 spin_unlock_irqrestore(&wl->irq_lock, flags);
3622 }
3623
3624 static int b43_op_config_interface(struct ieee80211_hw *hw,
3625 struct ieee80211_vif *vif,
3626 struct ieee80211_if_conf *conf)
3627 {
3628 struct b43_wl *wl = hw_to_b43_wl(hw);
3629 struct b43_wldev *dev = wl->current_dev;
3630 unsigned long flags;
3631
3632 if (!dev)
3633 return -ENODEV;
3634 mutex_lock(&wl->mutex);
3635 spin_lock_irqsave(&wl->irq_lock, flags);
3636 B43_WARN_ON(wl->vif != vif);
3637 if (conf->bssid)
3638 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3639 else
3640 memset(wl->bssid, 0, ETH_ALEN);
3641 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3642 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP) ||
3643 b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT)) {
3644 B43_WARN_ON(conf->type != wl->if_type);
3645 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3646 if (conf->beacon)
3647 b43_update_templates(wl, conf->beacon);
3648 }
3649 b43_write_mac_bssid_templates(dev);
3650 }
3651 spin_unlock_irqrestore(&wl->irq_lock, flags);
3652 mutex_unlock(&wl->mutex);
3653
3654 return 0;
3655 }
3656
3657 /* Locking: wl->mutex */
3658 static void b43_wireless_core_stop(struct b43_wldev *dev)
3659 {
3660 struct b43_wl *wl = dev->wl;
3661 unsigned long flags;
3662
3663 if (b43_status(dev) < B43_STAT_STARTED)
3664 return;
3665
3666 /* Disable and sync interrupts. We must do this before than
3667 * setting the status to INITIALIZED, as the interrupt handler
3668 * won't care about IRQs then. */
3669 spin_lock_irqsave(&wl->irq_lock, flags);
3670 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3671 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3672 spin_unlock_irqrestore(&wl->irq_lock, flags);
3673 b43_synchronize_irq(dev);
3674
3675 write_lock_irqsave(&wl->tx_lock, flags);
3676 b43_set_status(dev, B43_STAT_INITIALIZED);
3677 write_unlock_irqrestore(&wl->tx_lock, flags);
3678
3679 b43_pio_stop(dev);
3680 mutex_unlock(&wl->mutex);
3681 /* Must unlock as it would otherwise deadlock. No races here.
3682 * Cancel the possibly running self-rearming periodic work. */
3683 cancel_delayed_work_sync(&dev->periodic_work);
3684 mutex_lock(&wl->mutex);
3685
3686 b43_mac_suspend(dev);
3687 free_irq(dev->dev->irq, dev);
3688 b43dbg(wl, "Wireless interface stopped\n");
3689 }
3690
3691 /* Locking: wl->mutex */
3692 static int b43_wireless_core_start(struct b43_wldev *dev)
3693 {
3694 int err;
3695
3696 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3697
3698 drain_txstatus_queue(dev);
3699 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3700 IRQF_SHARED, KBUILD_MODNAME, dev);
3701 if (err) {
3702 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3703 goto out;
3704 }
3705
3706 /* We are ready to run. */
3707 b43_set_status(dev, B43_STAT_STARTED);
3708
3709 /* Start data flow (TX/RX). */
3710 b43_mac_enable(dev);
3711 b43_interrupt_enable(dev, dev->irq_savedstate);
3712
3713 /* Start maintainance work */
3714 b43_periodic_tasks_setup(dev);
3715
3716 b43dbg(dev->wl, "Wireless interface started\n");
3717 out:
3718 return err;
3719 }
3720
3721 /* Get PHY and RADIO versioning numbers */
3722 static int b43_phy_versioning(struct b43_wldev *dev)
3723 {
3724 struct b43_phy *phy = &dev->phy;
3725 u32 tmp;
3726 u8 analog_type;
3727 u8 phy_type;
3728 u8 phy_rev;
3729 u16 radio_manuf;
3730 u16 radio_ver;
3731 u16 radio_rev;
3732 int unsupported = 0;
3733
3734 /* Get PHY versioning */
3735 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3736 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3737 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3738 phy_rev = (tmp & B43_PHYVER_VERSION);
3739 switch (phy_type) {
3740 case B43_PHYTYPE_A:
3741 if (phy_rev >= 4)
3742 unsupported = 1;
3743 break;
3744 case B43_PHYTYPE_B:
3745 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3746 && phy_rev != 7)
3747 unsupported = 1;
3748 break;
3749 case B43_PHYTYPE_G:
3750 if (phy_rev > 9)
3751 unsupported = 1;
3752 break;
3753 #ifdef CONFIG_B43_NPHY
3754 case B43_PHYTYPE_N:
3755 if (phy_rev > 1)
3756 unsupported = 1;
3757 break;
3758 #endif
3759 default:
3760 unsupported = 1;
3761 };
3762 if (unsupported) {
3763 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3764 "(Analog %u, Type %u, Revision %u)\n",
3765 analog_type, phy_type, phy_rev);
3766 return -EOPNOTSUPP;
3767 }
3768 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3769 analog_type, phy_type, phy_rev);
3770
3771 /* Get RADIO versioning */
3772 if (dev->dev->bus->chip_id == 0x4317) {
3773 if (dev->dev->bus->chip_rev == 0)
3774 tmp = 0x3205017F;
3775 else if (dev->dev->bus->chip_rev == 1)
3776 tmp = 0x4205017F;
3777 else
3778 tmp = 0x5205017F;
3779 } else {
3780 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3781 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3782 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3783 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3784 }
3785 radio_manuf = (tmp & 0x00000FFF);
3786 radio_ver = (tmp & 0x0FFFF000) >> 12;
3787 radio_rev = (tmp & 0xF0000000) >> 28;
3788 if (radio_manuf != 0x17F /* Broadcom */)
3789 unsupported = 1;
3790 switch (phy_type) {
3791 case B43_PHYTYPE_A:
3792 if (radio_ver != 0x2060)
3793 unsupported = 1;
3794 if (radio_rev != 1)
3795 unsupported = 1;
3796 if (radio_manuf != 0x17F)
3797 unsupported = 1;
3798 break;
3799 case B43_PHYTYPE_B:
3800 if ((radio_ver & 0xFFF0) != 0x2050)
3801 unsupported = 1;
3802 break;
3803 case B43_PHYTYPE_G:
3804 if (radio_ver != 0x2050)
3805 unsupported = 1;
3806 break;
3807 case B43_PHYTYPE_N:
3808 if (radio_ver != 0x2055)
3809 unsupported = 1;
3810 break;
3811 default:
3812 B43_WARN_ON(1);
3813 }
3814 if (unsupported) {
3815 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3816 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3817 radio_manuf, radio_ver, radio_rev);
3818 return -EOPNOTSUPP;
3819 }
3820 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3821 radio_manuf, radio_ver, radio_rev);
3822
3823 phy->radio_manuf = radio_manuf;
3824 phy->radio_ver = radio_ver;
3825 phy->radio_rev = radio_rev;
3826
3827 phy->analog = analog_type;
3828 phy->type = phy_type;
3829 phy->rev = phy_rev;
3830
3831 return 0;
3832 }
3833
3834 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3835 struct b43_phy *phy)
3836 {
3837 struct b43_txpower_lo_control *lo;
3838 int i;
3839
3840 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3841 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3842
3843 phy->aci_enable = 0;
3844 phy->aci_wlan_automatic = 0;
3845 phy->aci_hw_rssi = 0;
3846
3847 phy->radio_off_context.valid = 0;
3848
3849 lo = phy->lo_control;
3850 if (lo) {
3851 memset(lo, 0, sizeof(*(phy->lo_control)));
3852 lo->tx_bias = 0xFF;
3853 INIT_LIST_HEAD(&lo->calib_list);
3854 }
3855 phy->max_lb_gain = 0;
3856 phy->trsw_rx_gain = 0;
3857 phy->txpwr_offset = 0;
3858
3859 /* NRSSI */
3860 phy->nrssislope = 0;
3861 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3862 phy->nrssi[i] = -1000;
3863 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3864 phy->nrssi_lt[i] = i;
3865
3866 phy->lofcal = 0xFFFF;
3867 phy->initval = 0xFFFF;
3868
3869 phy->interfmode = B43_INTERFMODE_NONE;
3870 phy->channel = 0xFF;
3871
3872 phy->hardware_power_control = !!modparam_hwpctl;
3873
3874 /* PHY TX errors counter. */
3875 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3876
3877 /* OFDM-table address caching. */
3878 phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3879 }
3880
3881 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3882 {
3883 dev->dfq_valid = 0;
3884
3885 /* Assume the radio is enabled. If it's not enabled, the state will
3886 * immediately get fixed on the first periodic work run. */
3887 dev->radio_hw_enable = 1;
3888
3889 /* Stats */
3890 memset(&dev->stats, 0, sizeof(dev->stats));
3891
3892 setup_struct_phy_for_init(dev, &dev->phy);
3893
3894 /* IRQ related flags */
3895 dev->irq_reason = 0;
3896 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3897 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3898
3899 dev->mac_suspended = 1;
3900
3901 /* Noise calculation context */
3902 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3903 }
3904
3905 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3906 {
3907 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3908 u64 hf;
3909
3910 if (!modparam_btcoex)
3911 return;
3912 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3913 return;
3914 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3915 return;
3916
3917 hf = b43_hf_read(dev);
3918 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3919 hf |= B43_HF_BTCOEXALT;
3920 else
3921 hf |= B43_HF_BTCOEX;
3922 b43_hf_write(dev, hf);
3923 }
3924
3925 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3926 {
3927 if (!modparam_btcoex)
3928 return;
3929 //TODO
3930 }
3931
3932 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3933 {
3934 #ifdef CONFIG_SSB_DRIVER_PCICORE
3935 struct ssb_bus *bus = dev->dev->bus;
3936 u32 tmp;
3937
3938 if (bus->pcicore.dev &&
3939 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3940 bus->pcicore.dev->id.revision <= 5) {
3941 /* IMCFGLO timeouts workaround. */
3942 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3943 tmp &= ~SSB_IMCFGLO_REQTO;
3944 tmp &= ~SSB_IMCFGLO_SERTO;
3945 switch (bus->bustype) {
3946 case SSB_BUSTYPE_PCI:
3947 case SSB_BUSTYPE_PCMCIA:
3948 tmp |= 0x32;
3949 break;
3950 case SSB_BUSTYPE_SSB:
3951 tmp |= 0x53;
3952 break;
3953 }
3954 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3955 }
3956 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3957 }
3958
3959 /* Write the short and long frame retry limit values. */
3960 static void b43_set_retry_limits(struct b43_wldev *dev,
3961 unsigned int short_retry,
3962 unsigned int long_retry)
3963 {
3964 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3965 * the chip-internal counter. */
3966 short_retry = min(short_retry, (unsigned int)0xF);
3967 long_retry = min(long_retry, (unsigned int)0xF);
3968
3969 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3970 short_retry);
3971 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3972 long_retry);
3973 }
3974
3975 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
3976 {
3977 u16 pu_delay;
3978
3979 /* The time value is in microseconds. */
3980 if (dev->phy.type == B43_PHYTYPE_A)
3981 pu_delay = 3700;
3982 else
3983 pu_delay = 1050;
3984 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS) || idle)
3985 pu_delay = 500;
3986 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3987 pu_delay = max(pu_delay, (u16)2400);
3988
3989 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
3990 }
3991
3992 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3993 static void b43_set_pretbtt(struct b43_wldev *dev)
3994 {
3995 u16 pretbtt;
3996
3997 /* The time value is in microseconds. */
3998 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) {
3999 pretbtt = 2;
4000 } else {
4001 if (dev->phy.type == B43_PHYTYPE_A)
4002 pretbtt = 120;
4003 else
4004 pretbtt = 250;
4005 }
4006 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4007 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4008 }
4009
4010 /* Shutdown a wireless core */
4011 /* Locking: wl->mutex */
4012 static void b43_wireless_core_exit(struct b43_wldev *dev)
4013 {
4014 struct b43_phy *phy = &dev->phy;
4015 u32 macctl;
4016
4017 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
4018 if (b43_status(dev) != B43_STAT_INITIALIZED)
4019 return;
4020 b43_set_status(dev, B43_STAT_UNINIT);
4021
4022 /* Stop the microcode PSM. */
4023 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4024 macctl &= ~B43_MACCTL_PSM_RUN;
4025 macctl |= B43_MACCTL_PSM_JMP0;
4026 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4027
4028 if (!dev->suspend_in_progress) {
4029 b43_leds_exit(dev);
4030 b43_rng_exit(dev->wl);
4031 }
4032 b43_dma_free(dev);
4033 b43_pio_free(dev);
4034 b43_chip_exit(dev);
4035 b43_radio_turn_off(dev, 1);
4036 b43_switch_analog(dev, 0);
4037 if (phy->dyn_tssi_tbl)
4038 kfree(phy->tssi2dbm);
4039 kfree(phy->lo_control);
4040 phy->lo_control = NULL;
4041 if (dev->wl->current_beacon) {
4042 dev_kfree_skb_any(dev->wl->current_beacon);
4043 dev->wl->current_beacon = NULL;
4044 }
4045
4046 ssb_device_disable(dev->dev, 0);
4047 ssb_bus_may_powerdown(dev->dev->bus);
4048 }
4049
4050 /* Initialize a wireless core */
4051 static int b43_wireless_core_init(struct b43_wldev *dev)
4052 {
4053 struct b43_wl *wl = dev->wl;
4054 struct ssb_bus *bus = dev->dev->bus;
4055 struct ssb_sprom *sprom = &bus->sprom;
4056 struct b43_phy *phy = &dev->phy;
4057 int err;
4058 u64 hf;
4059 u32 tmp;
4060
4061 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4062
4063 err = ssb_bus_powerup(bus, 0);
4064 if (err)
4065 goto out;
4066 if (!ssb_device_is_enabled(dev->dev)) {
4067 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4068 b43_wireless_core_reset(dev, tmp);
4069 }
4070
4071 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
4072 phy->lo_control =
4073 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
4074 if (!phy->lo_control) {
4075 err = -ENOMEM;
4076 goto err_busdown;
4077 }
4078 }
4079 setup_struct_wldev_for_init(dev);
4080
4081 err = b43_phy_init_tssi2dbm_table(dev);
4082 if (err)
4083 goto err_kfree_lo_control;
4084
4085 /* Enable IRQ routing to this device. */
4086 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4087
4088 b43_imcfglo_timeouts_workaround(dev);
4089 b43_bluetooth_coext_disable(dev);
4090 b43_phy_early_init(dev);
4091 err = b43_chip_init(dev);
4092 if (err)
4093 goto err_kfree_tssitbl;
4094 b43_shm_write16(dev, B43_SHM_SHARED,
4095 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4096 hf = b43_hf_read(dev);
4097 if (phy->type == B43_PHYTYPE_G) {
4098 hf |= B43_HF_SYMW;
4099 if (phy->rev == 1)
4100 hf |= B43_HF_GDCW;
4101 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4102 hf |= B43_HF_OFDMPABOOST;
4103 } else if (phy->type == B43_PHYTYPE_B) {
4104 hf |= B43_HF_SYMW;
4105 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
4106 hf &= ~B43_HF_GDCW;
4107 }
4108 b43_hf_write(dev, hf);
4109
4110 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4111 B43_DEFAULT_LONG_RETRY_LIMIT);
4112 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4113 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4114
4115 /* Disable sending probe responses from firmware.
4116 * Setting the MaxTime to one usec will always trigger
4117 * a timeout, so we never send any probe resp.
4118 * A timeout of zero is infinite. */
4119 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4120
4121 b43_rate_memory_init(dev);
4122 b43_set_phytxctl_defaults(dev);
4123
4124 /* Minimum Contention Window */
4125 if (phy->type == B43_PHYTYPE_B) {
4126 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4127 } else {
4128 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4129 }
4130 /* Maximum Contention Window */
4131 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4132
4133 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4134 dev->__using_pio_transfers = 1;
4135 err = b43_pio_init(dev);
4136 } else {
4137 dev->__using_pio_transfers = 0;
4138 err = b43_dma_init(dev);
4139 }
4140 if (err)
4141 goto err_chip_exit;
4142 b43_qos_init(dev);
4143 b43_set_synth_pu_delay(dev, 1);
4144 b43_bluetooth_coext_enable(dev);
4145
4146 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
4147 b43_upload_card_macaddress(dev);
4148 b43_security_init(dev);
4149 if (!dev->suspend_in_progress)
4150 b43_rng_init(wl);
4151
4152 b43_set_status(dev, B43_STAT_INITIALIZED);
4153
4154 if (!dev->suspend_in_progress)
4155 b43_leds_init(dev);
4156 out:
4157 return err;
4158
4159 err_chip_exit:
4160 b43_chip_exit(dev);
4161 err_kfree_tssitbl:
4162 if (phy->dyn_tssi_tbl)
4163 kfree(phy->tssi2dbm);
4164 err_kfree_lo_control:
4165 kfree(phy->lo_control);
4166 phy->lo_control = NULL;
4167 err_busdown:
4168 ssb_bus_may_powerdown(bus);
4169 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4170 return err;
4171 }
4172
4173 static int b43_op_add_interface(struct ieee80211_hw *hw,
4174 struct ieee80211_if_init_conf *conf)
4175 {
4176 struct b43_wl *wl = hw_to_b43_wl(hw);
4177 struct b43_wldev *dev;
4178 unsigned long flags;
4179 int err = -EOPNOTSUPP;
4180
4181 /* TODO: allow WDS/AP devices to coexist */
4182
4183 if (conf->type != IEEE80211_IF_TYPE_AP &&
4184 conf->type != IEEE80211_IF_TYPE_MESH_POINT &&
4185 conf->type != IEEE80211_IF_TYPE_STA &&
4186 conf->type != IEEE80211_IF_TYPE_WDS &&
4187 conf->type != IEEE80211_IF_TYPE_IBSS)
4188 return -EOPNOTSUPP;
4189
4190 mutex_lock(&wl->mutex);
4191 if (wl->operating)
4192 goto out_mutex_unlock;
4193
4194 b43dbg(wl, "Adding Interface type %d\n", conf->type);
4195
4196 dev = wl->current_dev;
4197 wl->operating = 1;
4198 wl->vif = conf->vif;
4199 wl->if_type = conf->type;
4200 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4201
4202 spin_lock_irqsave(&wl->irq_lock, flags);
4203 b43_adjust_opmode(dev);
4204 b43_set_pretbtt(dev);
4205 b43_set_synth_pu_delay(dev, 0);
4206 b43_upload_card_macaddress(dev);
4207 spin_unlock_irqrestore(&wl->irq_lock, flags);
4208
4209 err = 0;
4210 out_mutex_unlock:
4211 mutex_unlock(&wl->mutex);
4212
4213 return err;
4214 }
4215
4216 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4217 struct ieee80211_if_init_conf *conf)
4218 {
4219 struct b43_wl *wl = hw_to_b43_wl(hw);
4220 struct b43_wldev *dev = wl->current_dev;
4221 unsigned long flags;
4222
4223 b43dbg(wl, "Removing Interface type %d\n", conf->type);
4224
4225 mutex_lock(&wl->mutex);
4226
4227 B43_WARN_ON(!wl->operating);
4228 B43_WARN_ON(wl->vif != conf->vif);
4229 wl->vif = NULL;
4230
4231 wl->operating = 0;
4232
4233 spin_lock_irqsave(&wl->irq_lock, flags);
4234 b43_adjust_opmode(dev);
4235 memset(wl->mac_addr, 0, ETH_ALEN);
4236 b43_upload_card_macaddress(dev);
4237 spin_unlock_irqrestore(&wl->irq_lock, flags);
4238
4239 mutex_unlock(&wl->mutex);
4240 }
4241
4242 static int b43_op_start(struct ieee80211_hw *hw)
4243 {
4244 struct b43_wl *wl = hw_to_b43_wl(hw);
4245 struct b43_wldev *dev = wl->current_dev;
4246 int did_init = 0;
4247 int err = 0;
4248 bool do_rfkill_exit = 0;
4249
4250 /* Kill all old instance specific information to make sure
4251 * the card won't use it in the short timeframe between start
4252 * and mac80211 reconfiguring it. */
4253 memset(wl->bssid, 0, ETH_ALEN);
4254 memset(wl->mac_addr, 0, ETH_ALEN);
4255 wl->filter_flags = 0;
4256 wl->radiotap_enabled = 0;
4257 b43_qos_clear(wl);
4258 wl->beacon0_uploaded = 0;
4259 wl->beacon1_uploaded = 0;
4260 wl->beacon_templates_virgin = 1;
4261
4262 /* First register RFkill.
4263 * LEDs that are registered later depend on it. */
4264 b43_rfkill_init(dev);
4265
4266 mutex_lock(&wl->mutex);
4267
4268 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4269 err = b43_wireless_core_init(dev);
4270 if (err) {
4271 do_rfkill_exit = 1;
4272 goto out_mutex_unlock;
4273 }
4274 did_init = 1;
4275 }
4276
4277 if (b43_status(dev) < B43_STAT_STARTED) {
4278 err = b43_wireless_core_start(dev);
4279 if (err) {
4280 if (did_init)
4281 b43_wireless_core_exit(dev);
4282 do_rfkill_exit = 1;
4283 goto out_mutex_unlock;
4284 }
4285 }
4286
4287 out_mutex_unlock:
4288 mutex_unlock(&wl->mutex);
4289
4290 if (do_rfkill_exit)
4291 b43_rfkill_exit(dev);
4292
4293 return err;
4294 }
4295
4296 static void b43_op_stop(struct ieee80211_hw *hw)
4297 {
4298 struct b43_wl *wl = hw_to_b43_wl(hw);
4299 struct b43_wldev *dev = wl->current_dev;
4300
4301 b43_rfkill_exit(dev);
4302 cancel_work_sync(&(wl->qos_update_work));
4303 cancel_work_sync(&(wl->beacon_update_trigger));
4304
4305 mutex_lock(&wl->mutex);
4306 if (b43_status(dev) >= B43_STAT_STARTED)
4307 b43_wireless_core_stop(dev);
4308 b43_wireless_core_exit(dev);
4309 mutex_unlock(&wl->mutex);
4310 }
4311
4312 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
4313 u32 short_retry_limit, u32 long_retry_limit)
4314 {
4315 struct b43_wl *wl = hw_to_b43_wl(hw);
4316 struct b43_wldev *dev;
4317 int err = 0;
4318
4319 mutex_lock(&wl->mutex);
4320 dev = wl->current_dev;
4321 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
4322 err = -ENODEV;
4323 goto out_unlock;
4324 }
4325 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
4326 out_unlock:
4327 mutex_unlock(&wl->mutex);
4328
4329 return err;
4330 }
4331
4332 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set)
4333 {
4334 struct b43_wl *wl = hw_to_b43_wl(hw);
4335 struct sk_buff *beacon;
4336 unsigned long flags;
4337
4338 /* We could modify the existing beacon and set the aid bit in
4339 * the TIM field, but that would probably require resizing and
4340 * moving of data within the beacon template.
4341 * Simply request a new beacon and let mac80211 do the hard work. */
4342 beacon = ieee80211_beacon_get(hw, wl->vif);
4343 if (unlikely(!beacon))
4344 return -ENOMEM;
4345 spin_lock_irqsave(&wl->irq_lock, flags);
4346 b43_update_templates(wl, beacon);
4347 spin_unlock_irqrestore(&wl->irq_lock, flags);
4348
4349 return 0;
4350 }
4351
4352 static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw,
4353 struct sk_buff *beacon)
4354 {
4355 struct b43_wl *wl = hw_to_b43_wl(hw);
4356 unsigned long flags;
4357
4358 spin_lock_irqsave(&wl->irq_lock, flags);
4359 b43_update_templates(wl, beacon);
4360 spin_unlock_irqrestore(&wl->irq_lock, flags);
4361
4362 return 0;
4363 }
4364
4365 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4366 struct ieee80211_vif *vif,
4367 enum sta_notify_cmd notify_cmd,
4368 const u8 *addr)
4369 {
4370 struct b43_wl *wl = hw_to_b43_wl(hw);
4371
4372 B43_WARN_ON(!vif || wl->vif != vif);
4373 }
4374
4375 static const struct ieee80211_ops b43_hw_ops = {
4376 .tx = b43_op_tx,
4377 .conf_tx = b43_op_conf_tx,
4378 .add_interface = b43_op_add_interface,
4379 .remove_interface = b43_op_remove_interface,
4380 .config = b43_op_config,
4381 .config_interface = b43_op_config_interface,
4382 .configure_filter = b43_op_configure_filter,
4383 .set_key = b43_op_set_key,
4384 .get_stats = b43_op_get_stats,
4385 .get_tx_stats = b43_op_get_tx_stats,
4386 .start = b43_op_start,
4387 .stop = b43_op_stop,
4388 .set_retry_limit = b43_op_set_retry_limit,
4389 .set_tim = b43_op_beacon_set_tim,
4390 .beacon_update = b43_op_ibss_beacon_update,
4391 .sta_notify = b43_op_sta_notify,
4392 };
4393
4394 /* Hard-reset the chip. Do not call this directly.
4395 * Use b43_controller_restart()
4396 */
4397 static void b43_chip_reset(struct work_struct *work)
4398 {
4399 struct b43_wldev *dev =
4400 container_of(work, struct b43_wldev, restart_work);
4401 struct b43_wl *wl = dev->wl;
4402 int err = 0;
4403 int prev_status;
4404
4405 mutex_lock(&wl->mutex);
4406
4407 prev_status = b43_status(dev);
4408 /* Bring the device down... */
4409 if (prev_status >= B43_STAT_STARTED)
4410 b43_wireless_core_stop(dev);
4411 if (prev_status >= B43_STAT_INITIALIZED)
4412 b43_wireless_core_exit(dev);
4413
4414 /* ...and up again. */
4415 if (prev_status >= B43_STAT_INITIALIZED) {
4416 err = b43_wireless_core_init(dev);
4417 if (err)
4418 goto out;
4419 }
4420 if (prev_status >= B43_STAT_STARTED) {
4421 err = b43_wireless_core_start(dev);
4422 if (err) {
4423 b43_wireless_core_exit(dev);
4424 goto out;
4425 }
4426 }
4427 out:
4428 if (err)
4429 wl->current_dev = NULL; /* Failed to init the dev. */
4430 mutex_unlock(&wl->mutex);
4431 if (err)
4432 b43err(wl, "Controller restart FAILED\n");
4433 else
4434 b43info(wl, "Controller restarted\n");
4435 }
4436
4437 static int b43_setup_bands(struct b43_wldev *dev,
4438 bool have_2ghz_phy, bool have_5ghz_phy)
4439 {
4440 struct ieee80211_hw *hw = dev->wl->hw;
4441
4442 if (have_2ghz_phy)
4443 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4444 if (dev->phy.type == B43_PHYTYPE_N) {
4445 if (have_5ghz_phy)
4446 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4447 } else {
4448 if (have_5ghz_phy)
4449 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4450 }
4451
4452 dev->phy.supports_2ghz = have_2ghz_phy;
4453 dev->phy.supports_5ghz = have_5ghz_phy;
4454
4455 return 0;
4456 }
4457
4458 static void b43_wireless_core_detach(struct b43_wldev *dev)
4459 {
4460 /* We release firmware that late to not be required to re-request
4461 * is all the time when we reinit the core. */
4462 b43_release_firmware(dev);
4463 }
4464
4465 static int b43_wireless_core_attach(struct b43_wldev *dev)
4466 {
4467 struct b43_wl *wl = dev->wl;
4468 struct ssb_bus *bus = dev->dev->bus;
4469 struct pci_dev *pdev = bus->host_pci;
4470 int err;
4471 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4472 u32 tmp;
4473
4474 /* Do NOT do any device initialization here.
4475 * Do it in wireless_core_init() instead.
4476 * This function is for gathering basic information about the HW, only.
4477 * Also some structs may be set up here. But most likely you want to have
4478 * that in core_init(), too.
4479 */
4480
4481 err = ssb_bus_powerup(bus, 0);
4482 if (err) {
4483 b43err(wl, "Bus powerup failed\n");
4484 goto out;
4485 }
4486 /* Get the PHY type. */
4487 if (dev->dev->id.revision >= 5) {
4488 u32 tmshigh;
4489
4490 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4491 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4492 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4493 } else
4494 B43_WARN_ON(1);
4495
4496 dev->phy.gmode = have_2ghz_phy;
4497 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4498 b43_wireless_core_reset(dev, tmp);
4499
4500 err = b43_phy_versioning(dev);
4501 if (err)
4502 goto err_powerdown;
4503 /* Check if this device supports multiband. */
4504 if (!pdev ||
4505 (pdev->device != 0x4312 &&
4506 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4507 /* No multiband support. */
4508 have_2ghz_phy = 0;
4509 have_5ghz_phy = 0;
4510 switch (dev->phy.type) {
4511 case B43_PHYTYPE_A:
4512 have_5ghz_phy = 1;
4513 break;
4514 case B43_PHYTYPE_G:
4515 case B43_PHYTYPE_N:
4516 have_2ghz_phy = 1;
4517 break;
4518 default:
4519 B43_WARN_ON(1);
4520 }
4521 }
4522 if (dev->phy.type == B43_PHYTYPE_A) {
4523 /* FIXME */
4524 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4525 err = -EOPNOTSUPP;
4526 goto err_powerdown;
4527 }
4528 if (1 /* disable A-PHY */) {
4529 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4530 if (dev->phy.type != B43_PHYTYPE_N) {
4531 have_2ghz_phy = 1;
4532 have_5ghz_phy = 0;
4533 }
4534 }
4535
4536 dev->phy.gmode = have_2ghz_phy;
4537 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4538 b43_wireless_core_reset(dev, tmp);
4539
4540 err = b43_validate_chipaccess(dev);
4541 if (err)
4542 goto err_powerdown;
4543 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4544 if (err)
4545 goto err_powerdown;
4546
4547 /* Now set some default "current_dev" */
4548 if (!wl->current_dev)
4549 wl->current_dev = dev;
4550 INIT_WORK(&dev->restart_work, b43_chip_reset);
4551
4552 b43_radio_turn_off(dev, 1);
4553 b43_switch_analog(dev, 0);
4554 ssb_device_disable(dev->dev, 0);
4555 ssb_bus_may_powerdown(bus);
4556
4557 out:
4558 return err;
4559
4560 err_powerdown:
4561 ssb_bus_may_powerdown(bus);
4562 return err;
4563 }
4564
4565 static void b43_one_core_detach(struct ssb_device *dev)
4566 {
4567 struct b43_wldev *wldev;
4568 struct b43_wl *wl;
4569
4570 /* Do not cancel ieee80211-workqueue based work here.
4571 * See comment in b43_remove(). */
4572
4573 wldev = ssb_get_drvdata(dev);
4574 wl = wldev->wl;
4575 b43_debugfs_remove_device(wldev);
4576 b43_wireless_core_detach(wldev);
4577 list_del(&wldev->list);
4578 wl->nr_devs--;
4579 ssb_set_drvdata(dev, NULL);
4580 kfree(wldev);
4581 }
4582
4583 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4584 {
4585 struct b43_wldev *wldev;
4586 struct pci_dev *pdev;
4587 int err = -ENOMEM;
4588
4589 if (!list_empty(&wl->devlist)) {
4590 /* We are not the first core on this chip. */
4591 pdev = dev->bus->host_pci;
4592 /* Only special chips support more than one wireless
4593 * core, although some of the other chips have more than
4594 * one wireless core as well. Check for this and
4595 * bail out early.
4596 */
4597 if (!pdev ||
4598 ((pdev->device != 0x4321) &&
4599 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4600 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4601 return -ENODEV;
4602 }
4603 }
4604
4605 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4606 if (!wldev)
4607 goto out;
4608
4609 wldev->dev = dev;
4610 wldev->wl = wl;
4611 b43_set_status(wldev, B43_STAT_UNINIT);
4612 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4613 tasklet_init(&wldev->isr_tasklet,
4614 (void (*)(unsigned long))b43_interrupt_tasklet,
4615 (unsigned long)wldev);
4616 INIT_LIST_HEAD(&wldev->list);
4617
4618 err = b43_wireless_core_attach(wldev);
4619 if (err)
4620 goto err_kfree_wldev;
4621
4622 list_add(&wldev->list, &wl->devlist);
4623 wl->nr_devs++;
4624 ssb_set_drvdata(dev, wldev);
4625 b43_debugfs_add_device(wldev);
4626
4627 out:
4628 return err;
4629
4630 err_kfree_wldev:
4631 kfree(wldev);
4632 return err;
4633 }
4634
4635 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4636 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4637 (pdev->device == _device) && \
4638 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4639 (pdev->subsystem_device == _subdevice) )
4640
4641 static void b43_sprom_fixup(struct ssb_bus *bus)
4642 {
4643 struct pci_dev *pdev;
4644
4645 /* boardflags workarounds */
4646 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4647 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4648 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4649 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4650 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4651 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4652 if (bus->bustype == SSB_BUSTYPE_PCI) {
4653 pdev = bus->host_pci;
4654 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4655 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4656 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013))
4657 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4658 }
4659 }
4660
4661 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4662 {
4663 struct ieee80211_hw *hw = wl->hw;
4664
4665 ssb_set_devtypedata(dev, NULL);
4666 ieee80211_free_hw(hw);
4667 }
4668
4669 static int b43_wireless_init(struct ssb_device *dev)
4670 {
4671 struct ssb_sprom *sprom = &dev->bus->sprom;
4672 struct ieee80211_hw *hw;
4673 struct b43_wl *wl;
4674 int err = -ENOMEM;
4675
4676 b43_sprom_fixup(dev->bus);
4677
4678 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4679 if (!hw) {
4680 b43err(NULL, "Could not allocate ieee80211 device\n");
4681 goto out;
4682 }
4683
4684 /* fill hw info */
4685 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
4686 IEEE80211_HW_RX_INCLUDES_FCS |
4687 IEEE80211_HW_SIGNAL_DBM |
4688 IEEE80211_HW_NOISE_DBM;
4689
4690 hw->queues = b43_modparam_qos ? 4 : 1;
4691 SET_IEEE80211_DEV(hw, dev->dev);
4692 if (is_valid_ether_addr(sprom->et1mac))
4693 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4694 else
4695 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4696
4697 /* Get and initialize struct b43_wl */
4698 wl = hw_to_b43_wl(hw);
4699 memset(wl, 0, sizeof(*wl));
4700 wl->hw = hw;
4701 spin_lock_init(&wl->irq_lock);
4702 rwlock_init(&wl->tx_lock);
4703 spin_lock_init(&wl->leds_lock);
4704 spin_lock_init(&wl->shm_lock);
4705 mutex_init(&wl->mutex);
4706 INIT_LIST_HEAD(&wl->devlist);
4707 INIT_WORK(&wl->qos_update_work, b43_qos_update_work);
4708 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4709
4710 ssb_set_devtypedata(dev, wl);
4711 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4712 err = 0;
4713 out:
4714 return err;
4715 }
4716
4717 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4718 {
4719 struct b43_wl *wl;
4720 int err;
4721 int first = 0;
4722
4723 wl = ssb_get_devtypedata(dev);
4724 if (!wl) {
4725 /* Probing the first core. Must setup common struct b43_wl */
4726 first = 1;
4727 err = b43_wireless_init(dev);
4728 if (err)
4729 goto out;
4730 wl = ssb_get_devtypedata(dev);
4731 B43_WARN_ON(!wl);
4732 }
4733 err = b43_one_core_attach(dev, wl);
4734 if (err)
4735 goto err_wireless_exit;
4736
4737 if (first) {
4738 err = ieee80211_register_hw(wl->hw);
4739 if (err)
4740 goto err_one_core_detach;
4741 }
4742
4743 out:
4744 return err;
4745
4746 err_one_core_detach:
4747 b43_one_core_detach(dev);
4748 err_wireless_exit:
4749 if (first)
4750 b43_wireless_exit(dev, wl);
4751 return err;
4752 }
4753
4754 static void b43_remove(struct ssb_device *dev)
4755 {
4756 struct b43_wl *wl = ssb_get_devtypedata(dev);
4757 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4758
4759 /* We must cancel any work here before unregistering from ieee80211,
4760 * as the ieee80211 unreg will destroy the workqueue. */
4761 cancel_work_sync(&wldev->restart_work);
4762
4763 B43_WARN_ON(!wl);
4764 if (wl->current_dev == wldev)
4765 ieee80211_unregister_hw(wl->hw);
4766
4767 b43_one_core_detach(dev);
4768
4769 if (list_empty(&wl->devlist)) {
4770 /* Last core on the chip unregistered.
4771 * We can destroy common struct b43_wl.
4772 */
4773 b43_wireless_exit(dev, wl);
4774 }
4775 }
4776
4777 /* Perform a hardware reset. This can be called from any context. */
4778 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4779 {
4780 /* Must avoid requeueing, if we are in shutdown. */
4781 if (b43_status(dev) < B43_STAT_INITIALIZED)
4782 return;
4783 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4784 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4785 }
4786
4787 #ifdef CONFIG_PM
4788
4789 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4790 {
4791 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4792 struct b43_wl *wl = wldev->wl;
4793
4794 b43dbg(wl, "Suspending...\n");
4795
4796 mutex_lock(&wl->mutex);
4797 wldev->suspend_in_progress = true;
4798 wldev->suspend_init_status = b43_status(wldev);
4799 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4800 b43_wireless_core_stop(wldev);
4801 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4802 b43_wireless_core_exit(wldev);
4803 mutex_unlock(&wl->mutex);
4804
4805 b43dbg(wl, "Device suspended.\n");
4806
4807 return 0;
4808 }
4809
4810 static int b43_resume(struct ssb_device *dev)
4811 {
4812 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4813 struct b43_wl *wl = wldev->wl;
4814 int err = 0;
4815
4816 b43dbg(wl, "Resuming...\n");
4817
4818 mutex_lock(&wl->mutex);
4819 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4820 err = b43_wireless_core_init(wldev);
4821 if (err) {
4822 b43err(wl, "Resume failed at core init\n");
4823 goto out;
4824 }
4825 }
4826 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4827 err = b43_wireless_core_start(wldev);
4828 if (err) {
4829 b43_leds_exit(wldev);
4830 b43_rng_exit(wldev->wl);
4831 b43_wireless_core_exit(wldev);
4832 b43err(wl, "Resume failed at core start\n");
4833 goto out;
4834 }
4835 }
4836 b43dbg(wl, "Device resumed.\n");
4837 out:
4838 wldev->suspend_in_progress = false;
4839 mutex_unlock(&wl->mutex);
4840 return err;
4841 }
4842
4843 #else /* CONFIG_PM */
4844 # define b43_suspend NULL
4845 # define b43_resume NULL
4846 #endif /* CONFIG_PM */
4847
4848 static struct ssb_driver b43_ssb_driver = {
4849 .name = KBUILD_MODNAME,
4850 .id_table = b43_ssb_tbl,
4851 .probe = b43_probe,
4852 .remove = b43_remove,
4853 .suspend = b43_suspend,
4854 .resume = b43_resume,
4855 };
4856
4857 static void b43_print_driverinfo(void)
4858 {
4859 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4860 *feat_leds = "", *feat_rfkill = "";
4861
4862 #ifdef CONFIG_B43_PCI_AUTOSELECT
4863 feat_pci = "P";
4864 #endif
4865 #ifdef CONFIG_B43_PCMCIA
4866 feat_pcmcia = "M";
4867 #endif
4868 #ifdef CONFIG_B43_NPHY
4869 feat_nphy = "N";
4870 #endif
4871 #ifdef CONFIG_B43_LEDS
4872 feat_leds = "L";
4873 #endif
4874 #ifdef CONFIG_B43_RFKILL
4875 feat_rfkill = "R";
4876 #endif
4877 printk(KERN_INFO "Broadcom 43xx driver loaded "
4878 "[ Features: %s%s%s%s%s, Firmware-ID: "
4879 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4880 feat_pci, feat_pcmcia, feat_nphy,
4881 feat_leds, feat_rfkill);
4882 }
4883
4884 static int __init b43_init(void)
4885 {
4886 int err;
4887
4888 b43_debugfs_init();
4889 err = b43_pcmcia_init();
4890 if (err)
4891 goto err_dfs_exit;
4892 err = ssb_driver_register(&b43_ssb_driver);
4893 if (err)
4894 goto err_pcmcia_exit;
4895 b43_print_driverinfo();
4896
4897 return err;
4898
4899 err_pcmcia_exit:
4900 b43_pcmcia_exit();
4901 err_dfs_exit:
4902 b43_debugfs_exit();
4903 return err;
4904 }
4905
4906 static void __exit b43_exit(void)
4907 {
4908 ssb_driver_unregister(&b43_ssb_driver);
4909 b43_pcmcia_exit();
4910 b43_debugfs_exit();
4911 }
4912
4913 module_init(b43_init)
4914 module_exit(b43_exit)
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree