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b43: Enable LP-PHY support by default and remove Kconfig warning
[mirror_ubuntu-zesty-kernel.git] / drivers / net / wireless / b43 / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005-2009 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 Some parts of the code in this file are derived from the ipw2200
12 driver Copyright(c) 2003 - 2004 Intel Corporation.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; see the file COPYING. If not, write to
26 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
27 Boston, MA 02110-1301, USA.
28
29 */
30
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/moduleparam.h>
34 #include <linux/if_arp.h>
35 #include <linux/etherdevice.h>
36 #include <linux/firmware.h>
37 #include <linux/wireless.h>
38 #include <linux/workqueue.h>
39 #include <linux/skbuff.h>
40 #include <linux/io.h>
41 #include <linux/dma-mapping.h>
42 #include <asm/unaligned.h>
43
44 #include "b43.h"
45 #include "main.h"
46 #include "debugfs.h"
47 #include "phy_common.h"
48 #include "phy_g.h"
49 #include "phy_n.h"
50 #include "dma.h"
51 #include "pio.h"
52 #include "sysfs.h"
53 #include "xmit.h"
54 #include "lo.h"
55 #include "pcmcia.h"
56
57 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
58 MODULE_AUTHOR("Martin Langer");
59 MODULE_AUTHOR("Stefano Brivio");
60 MODULE_AUTHOR("Michael Buesch");
61 MODULE_LICENSE("GPL");
62
63 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
64
65
66 static int modparam_bad_frames_preempt;
67 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
68 MODULE_PARM_DESC(bad_frames_preempt,
69 "enable(1) / disable(0) Bad Frames Preemption");
70
71 static char modparam_fwpostfix[16];
72 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
73 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
74
75 static int modparam_hwpctl;
76 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
77 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
78
79 static int modparam_nohwcrypt;
80 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
81 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
82
83 static int modparam_hwtkip;
84 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
85 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
86
87 static int modparam_qos = 1;
88 module_param_named(qos, modparam_qos, int, 0444);
89 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
90
91 static int modparam_btcoex = 1;
92 module_param_named(btcoex, modparam_btcoex, int, 0444);
93 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistance (default on)");
94
95 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
96 module_param_named(verbose, b43_modparam_verbose, int, 0644);
97 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
98
99
100 static const struct ssb_device_id b43_ssb_tbl[] = {
101 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
102 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
103 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
104 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
105 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
106 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
107 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
108 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
109 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
110 SSB_DEVTABLE_END
111 };
112
113 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
114
115 /* Channel and ratetables are shared for all devices.
116 * They can't be const, because ieee80211 puts some precalculated
117 * data in there. This data is the same for all devices, so we don't
118 * get concurrency issues */
119 #define RATETAB_ENT(_rateid, _flags) \
120 { \
121 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
122 .hw_value = (_rateid), \
123 .flags = (_flags), \
124 }
125
126 /*
127 * NOTE: When changing this, sync with xmit.c's
128 * b43_plcp_get_bitrate_idx_* functions!
129 */
130 static struct ieee80211_rate __b43_ratetable[] = {
131 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
132 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
133 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
134 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
135 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
136 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
137 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
138 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
139 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
140 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
141 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
142 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
143 };
144
145 #define b43_a_ratetable (__b43_ratetable + 4)
146 #define b43_a_ratetable_size 8
147 #define b43_b_ratetable (__b43_ratetable + 0)
148 #define b43_b_ratetable_size 4
149 #define b43_g_ratetable (__b43_ratetable + 0)
150 #define b43_g_ratetable_size 12
151
152 #define CHAN4G(_channel, _freq, _flags) { \
153 .band = IEEE80211_BAND_2GHZ, \
154 .center_freq = (_freq), \
155 .hw_value = (_channel), \
156 .flags = (_flags), \
157 .max_antenna_gain = 0, \
158 .max_power = 30, \
159 }
160 static struct ieee80211_channel b43_2ghz_chantable[] = {
161 CHAN4G(1, 2412, 0),
162 CHAN4G(2, 2417, 0),
163 CHAN4G(3, 2422, 0),
164 CHAN4G(4, 2427, 0),
165 CHAN4G(5, 2432, 0),
166 CHAN4G(6, 2437, 0),
167 CHAN4G(7, 2442, 0),
168 CHAN4G(8, 2447, 0),
169 CHAN4G(9, 2452, 0),
170 CHAN4G(10, 2457, 0),
171 CHAN4G(11, 2462, 0),
172 CHAN4G(12, 2467, 0),
173 CHAN4G(13, 2472, 0),
174 CHAN4G(14, 2484, 0),
175 };
176 #undef CHAN4G
177
178 #define CHAN5G(_channel, _flags) { \
179 .band = IEEE80211_BAND_5GHZ, \
180 .center_freq = 5000 + (5 * (_channel)), \
181 .hw_value = (_channel), \
182 .flags = (_flags), \
183 .max_antenna_gain = 0, \
184 .max_power = 30, \
185 }
186 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
187 CHAN5G(32, 0), CHAN5G(34, 0),
188 CHAN5G(36, 0), CHAN5G(38, 0),
189 CHAN5G(40, 0), CHAN5G(42, 0),
190 CHAN5G(44, 0), CHAN5G(46, 0),
191 CHAN5G(48, 0), CHAN5G(50, 0),
192 CHAN5G(52, 0), CHAN5G(54, 0),
193 CHAN5G(56, 0), CHAN5G(58, 0),
194 CHAN5G(60, 0), CHAN5G(62, 0),
195 CHAN5G(64, 0), CHAN5G(66, 0),
196 CHAN5G(68, 0), CHAN5G(70, 0),
197 CHAN5G(72, 0), CHAN5G(74, 0),
198 CHAN5G(76, 0), CHAN5G(78, 0),
199 CHAN5G(80, 0), CHAN5G(82, 0),
200 CHAN5G(84, 0), CHAN5G(86, 0),
201 CHAN5G(88, 0), CHAN5G(90, 0),
202 CHAN5G(92, 0), CHAN5G(94, 0),
203 CHAN5G(96, 0), CHAN5G(98, 0),
204 CHAN5G(100, 0), CHAN5G(102, 0),
205 CHAN5G(104, 0), CHAN5G(106, 0),
206 CHAN5G(108, 0), CHAN5G(110, 0),
207 CHAN5G(112, 0), CHAN5G(114, 0),
208 CHAN5G(116, 0), CHAN5G(118, 0),
209 CHAN5G(120, 0), CHAN5G(122, 0),
210 CHAN5G(124, 0), CHAN5G(126, 0),
211 CHAN5G(128, 0), CHAN5G(130, 0),
212 CHAN5G(132, 0), CHAN5G(134, 0),
213 CHAN5G(136, 0), CHAN5G(138, 0),
214 CHAN5G(140, 0), CHAN5G(142, 0),
215 CHAN5G(144, 0), CHAN5G(145, 0),
216 CHAN5G(146, 0), CHAN5G(147, 0),
217 CHAN5G(148, 0), CHAN5G(149, 0),
218 CHAN5G(150, 0), CHAN5G(151, 0),
219 CHAN5G(152, 0), CHAN5G(153, 0),
220 CHAN5G(154, 0), CHAN5G(155, 0),
221 CHAN5G(156, 0), CHAN5G(157, 0),
222 CHAN5G(158, 0), CHAN5G(159, 0),
223 CHAN5G(160, 0), CHAN5G(161, 0),
224 CHAN5G(162, 0), CHAN5G(163, 0),
225 CHAN5G(164, 0), CHAN5G(165, 0),
226 CHAN5G(166, 0), CHAN5G(168, 0),
227 CHAN5G(170, 0), CHAN5G(172, 0),
228 CHAN5G(174, 0), CHAN5G(176, 0),
229 CHAN5G(178, 0), CHAN5G(180, 0),
230 CHAN5G(182, 0), CHAN5G(184, 0),
231 CHAN5G(186, 0), CHAN5G(188, 0),
232 CHAN5G(190, 0), CHAN5G(192, 0),
233 CHAN5G(194, 0), CHAN5G(196, 0),
234 CHAN5G(198, 0), CHAN5G(200, 0),
235 CHAN5G(202, 0), CHAN5G(204, 0),
236 CHAN5G(206, 0), CHAN5G(208, 0),
237 CHAN5G(210, 0), CHAN5G(212, 0),
238 CHAN5G(214, 0), CHAN5G(216, 0),
239 CHAN5G(218, 0), CHAN5G(220, 0),
240 CHAN5G(222, 0), CHAN5G(224, 0),
241 CHAN5G(226, 0), CHAN5G(228, 0),
242 };
243
244 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
245 CHAN5G(34, 0), CHAN5G(36, 0),
246 CHAN5G(38, 0), CHAN5G(40, 0),
247 CHAN5G(42, 0), CHAN5G(44, 0),
248 CHAN5G(46, 0), CHAN5G(48, 0),
249 CHAN5G(52, 0), CHAN5G(56, 0),
250 CHAN5G(60, 0), CHAN5G(64, 0),
251 CHAN5G(100, 0), CHAN5G(104, 0),
252 CHAN5G(108, 0), CHAN5G(112, 0),
253 CHAN5G(116, 0), CHAN5G(120, 0),
254 CHAN5G(124, 0), CHAN5G(128, 0),
255 CHAN5G(132, 0), CHAN5G(136, 0),
256 CHAN5G(140, 0), CHAN5G(149, 0),
257 CHAN5G(153, 0), CHAN5G(157, 0),
258 CHAN5G(161, 0), CHAN5G(165, 0),
259 CHAN5G(184, 0), CHAN5G(188, 0),
260 CHAN5G(192, 0), CHAN5G(196, 0),
261 CHAN5G(200, 0), CHAN5G(204, 0),
262 CHAN5G(208, 0), CHAN5G(212, 0),
263 CHAN5G(216, 0),
264 };
265 #undef CHAN5G
266
267 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
268 .band = IEEE80211_BAND_5GHZ,
269 .channels = b43_5ghz_nphy_chantable,
270 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
271 .bitrates = b43_a_ratetable,
272 .n_bitrates = b43_a_ratetable_size,
273 };
274
275 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
276 .band = IEEE80211_BAND_5GHZ,
277 .channels = b43_5ghz_aphy_chantable,
278 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
279 .bitrates = b43_a_ratetable,
280 .n_bitrates = b43_a_ratetable_size,
281 };
282
283 static struct ieee80211_supported_band b43_band_2GHz = {
284 .band = IEEE80211_BAND_2GHZ,
285 .channels = b43_2ghz_chantable,
286 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
287 .bitrates = b43_g_ratetable,
288 .n_bitrates = b43_g_ratetable_size,
289 };
290
291 static void b43_wireless_core_exit(struct b43_wldev *dev);
292 static int b43_wireless_core_init(struct b43_wldev *dev);
293 static void b43_wireless_core_stop(struct b43_wldev *dev);
294 static int b43_wireless_core_start(struct b43_wldev *dev);
295
296 static int b43_ratelimit(struct b43_wl *wl)
297 {
298 if (!wl || !wl->current_dev)
299 return 1;
300 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
301 return 1;
302 /* We are up and running.
303 * Ratelimit the messages to avoid DoS over the net. */
304 return net_ratelimit();
305 }
306
307 void b43info(struct b43_wl *wl, const char *fmt, ...)
308 {
309 va_list args;
310
311 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
312 return;
313 if (!b43_ratelimit(wl))
314 return;
315 va_start(args, fmt);
316 printk(KERN_INFO "b43-%s: ",
317 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
318 vprintk(fmt, args);
319 va_end(args);
320 }
321
322 void b43err(struct b43_wl *wl, const char *fmt, ...)
323 {
324 va_list args;
325
326 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
327 return;
328 if (!b43_ratelimit(wl))
329 return;
330 va_start(args, fmt);
331 printk(KERN_ERR "b43-%s ERROR: ",
332 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
333 vprintk(fmt, args);
334 va_end(args);
335 }
336
337 void b43warn(struct b43_wl *wl, const char *fmt, ...)
338 {
339 va_list args;
340
341 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
342 return;
343 if (!b43_ratelimit(wl))
344 return;
345 va_start(args, fmt);
346 printk(KERN_WARNING "b43-%s warning: ",
347 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
348 vprintk(fmt, args);
349 va_end(args);
350 }
351
352 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
353 {
354 va_list args;
355
356 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
357 return;
358 va_start(args, fmt);
359 printk(KERN_DEBUG "b43-%s debug: ",
360 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
361 vprintk(fmt, args);
362 va_end(args);
363 }
364
365 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
366 {
367 u32 macctl;
368
369 B43_WARN_ON(offset % 4 != 0);
370
371 macctl = b43_read32(dev, B43_MMIO_MACCTL);
372 if (macctl & B43_MACCTL_BE)
373 val = swab32(val);
374
375 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
376 mmiowb();
377 b43_write32(dev, B43_MMIO_RAM_DATA, val);
378 }
379
380 static inline void b43_shm_control_word(struct b43_wldev *dev,
381 u16 routing, u16 offset)
382 {
383 u32 control;
384
385 /* "offset" is the WORD offset. */
386 control = routing;
387 control <<= 16;
388 control |= offset;
389 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
390 }
391
392 u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
393 {
394 u32 ret;
395
396 if (routing == B43_SHM_SHARED) {
397 B43_WARN_ON(offset & 0x0001);
398 if (offset & 0x0003) {
399 /* Unaligned access */
400 b43_shm_control_word(dev, routing, offset >> 2);
401 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
402 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
403 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
404
405 goto out;
406 }
407 offset >>= 2;
408 }
409 b43_shm_control_word(dev, routing, offset);
410 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
411 out:
412 return ret;
413 }
414
415 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
416 {
417 struct b43_wl *wl = dev->wl;
418 unsigned long flags;
419 u32 ret;
420
421 spin_lock_irqsave(&wl->shm_lock, flags);
422 ret = __b43_shm_read32(dev, routing, offset);
423 spin_unlock_irqrestore(&wl->shm_lock, flags);
424
425 return ret;
426 }
427
428 u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
429 {
430 u16 ret;
431
432 if (routing == B43_SHM_SHARED) {
433 B43_WARN_ON(offset & 0x0001);
434 if (offset & 0x0003) {
435 /* Unaligned access */
436 b43_shm_control_word(dev, routing, offset >> 2);
437 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
438
439 goto out;
440 }
441 offset >>= 2;
442 }
443 b43_shm_control_word(dev, routing, offset);
444 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
445 out:
446 return ret;
447 }
448
449 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
450 {
451 struct b43_wl *wl = dev->wl;
452 unsigned long flags;
453 u16 ret;
454
455 spin_lock_irqsave(&wl->shm_lock, flags);
456 ret = __b43_shm_read16(dev, routing, offset);
457 spin_unlock_irqrestore(&wl->shm_lock, flags);
458
459 return ret;
460 }
461
462 void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
463 {
464 if (routing == B43_SHM_SHARED) {
465 B43_WARN_ON(offset & 0x0001);
466 if (offset & 0x0003) {
467 /* Unaligned access */
468 b43_shm_control_word(dev, routing, offset >> 2);
469 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
470 value & 0xFFFF);
471 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
472 b43_write16(dev, B43_MMIO_SHM_DATA,
473 (value >> 16) & 0xFFFF);
474 return;
475 }
476 offset >>= 2;
477 }
478 b43_shm_control_word(dev, routing, offset);
479 b43_write32(dev, B43_MMIO_SHM_DATA, value);
480 }
481
482 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
483 {
484 struct b43_wl *wl = dev->wl;
485 unsigned long flags;
486
487 spin_lock_irqsave(&wl->shm_lock, flags);
488 __b43_shm_write32(dev, routing, offset, value);
489 spin_unlock_irqrestore(&wl->shm_lock, flags);
490 }
491
492 void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
493 {
494 if (routing == B43_SHM_SHARED) {
495 B43_WARN_ON(offset & 0x0001);
496 if (offset & 0x0003) {
497 /* Unaligned access */
498 b43_shm_control_word(dev, routing, offset >> 2);
499 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
500 return;
501 }
502 offset >>= 2;
503 }
504 b43_shm_control_word(dev, routing, offset);
505 b43_write16(dev, B43_MMIO_SHM_DATA, value);
506 }
507
508 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
509 {
510 struct b43_wl *wl = dev->wl;
511 unsigned long flags;
512
513 spin_lock_irqsave(&wl->shm_lock, flags);
514 __b43_shm_write16(dev, routing, offset, value);
515 spin_unlock_irqrestore(&wl->shm_lock, flags);
516 }
517
518 /* Read HostFlags */
519 u64 b43_hf_read(struct b43_wldev *dev)
520 {
521 u64 ret;
522
523 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
524 ret <<= 16;
525 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
526 ret <<= 16;
527 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
528
529 return ret;
530 }
531
532 /* Write HostFlags */
533 void b43_hf_write(struct b43_wldev *dev, u64 value)
534 {
535 u16 lo, mi, hi;
536
537 lo = (value & 0x00000000FFFFULL);
538 mi = (value & 0x0000FFFF0000ULL) >> 16;
539 hi = (value & 0xFFFF00000000ULL) >> 32;
540 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
541 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
542 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
543 }
544
545 /* Read the firmware capabilities bitmask (Opensource firmware only) */
546 static u16 b43_fwcapa_read(struct b43_wldev *dev)
547 {
548 B43_WARN_ON(!dev->fw.opensource);
549 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
550 }
551
552 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
553 {
554 u32 low, high;
555
556 B43_WARN_ON(dev->dev->id.revision < 3);
557
558 /* The hardware guarantees us an atomic read, if we
559 * read the low register first. */
560 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
561 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
562
563 *tsf = high;
564 *tsf <<= 32;
565 *tsf |= low;
566 }
567
568 static void b43_time_lock(struct b43_wldev *dev)
569 {
570 u32 macctl;
571
572 macctl = b43_read32(dev, B43_MMIO_MACCTL);
573 macctl |= B43_MACCTL_TBTTHOLD;
574 b43_write32(dev, B43_MMIO_MACCTL, macctl);
575 /* Commit the write */
576 b43_read32(dev, B43_MMIO_MACCTL);
577 }
578
579 static void b43_time_unlock(struct b43_wldev *dev)
580 {
581 u32 macctl;
582
583 macctl = b43_read32(dev, B43_MMIO_MACCTL);
584 macctl &= ~B43_MACCTL_TBTTHOLD;
585 b43_write32(dev, B43_MMIO_MACCTL, macctl);
586 /* Commit the write */
587 b43_read32(dev, B43_MMIO_MACCTL);
588 }
589
590 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
591 {
592 u32 low, high;
593
594 B43_WARN_ON(dev->dev->id.revision < 3);
595
596 low = tsf;
597 high = (tsf >> 32);
598 /* The hardware guarantees us an atomic write, if we
599 * write the low register first. */
600 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
601 mmiowb();
602 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
603 mmiowb();
604 }
605
606 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
607 {
608 b43_time_lock(dev);
609 b43_tsf_write_locked(dev, tsf);
610 b43_time_unlock(dev);
611 }
612
613 static
614 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
615 {
616 static const u8 zero_addr[ETH_ALEN] = { 0 };
617 u16 data;
618
619 if (!mac)
620 mac = zero_addr;
621
622 offset |= 0x0020;
623 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
624
625 data = mac[0];
626 data |= mac[1] << 8;
627 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
628 data = mac[2];
629 data |= mac[3] << 8;
630 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
631 data = mac[4];
632 data |= mac[5] << 8;
633 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
634 }
635
636 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
637 {
638 const u8 *mac;
639 const u8 *bssid;
640 u8 mac_bssid[ETH_ALEN * 2];
641 int i;
642 u32 tmp;
643
644 bssid = dev->wl->bssid;
645 mac = dev->wl->mac_addr;
646
647 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
648
649 memcpy(mac_bssid, mac, ETH_ALEN);
650 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
651
652 /* Write our MAC address and BSSID to template ram */
653 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
654 tmp = (u32) (mac_bssid[i + 0]);
655 tmp |= (u32) (mac_bssid[i + 1]) << 8;
656 tmp |= (u32) (mac_bssid[i + 2]) << 16;
657 tmp |= (u32) (mac_bssid[i + 3]) << 24;
658 b43_ram_write(dev, 0x20 + i, tmp);
659 }
660 }
661
662 static void b43_upload_card_macaddress(struct b43_wldev *dev)
663 {
664 b43_write_mac_bssid_templates(dev);
665 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
666 }
667
668 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
669 {
670 /* slot_time is in usec. */
671 if (dev->phy.type != B43_PHYTYPE_G)
672 return;
673 b43_write16(dev, 0x684, 510 + slot_time);
674 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
675 }
676
677 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
678 {
679 b43_set_slot_time(dev, 9);
680 }
681
682 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
683 {
684 b43_set_slot_time(dev, 20);
685 }
686
687 /* Synchronize IRQ top- and bottom-half.
688 * IRQs must be masked before calling this.
689 * This must not be called with the irq_lock held.
690 */
691 static void b43_synchronize_irq(struct b43_wldev *dev)
692 {
693 synchronize_irq(dev->dev->irq);
694 tasklet_kill(&dev->isr_tasklet);
695 }
696
697 /* DummyTransmission function, as documented on
698 * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
699 */
700 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
701 {
702 struct b43_wl *wl = dev->wl;
703 struct b43_phy *phy = &dev->phy;
704 unsigned int i, max_loop;
705 u16 value;
706 u32 buffer[5] = {
707 0x00000000,
708 0x00D40000,
709 0x00000000,
710 0x01000000,
711 0x00000000,
712 };
713
714 if (ofdm) {
715 max_loop = 0x1E;
716 buffer[0] = 0x000201CC;
717 } else {
718 max_loop = 0xFA;
719 buffer[0] = 0x000B846E;
720 }
721
722 spin_lock_irq(&wl->irq_lock);
723 write_lock(&wl->tx_lock);
724
725 for (i = 0; i < 5; i++)
726 b43_ram_write(dev, i * 4, buffer[i]);
727
728 b43_write16(dev, 0x0568, 0x0000);
729 if (dev->dev->id.revision < 11)
730 b43_write16(dev, 0x07C0, 0x0000);
731 else
732 b43_write16(dev, 0x07C0, 0x0100);
733 value = (ofdm ? 0x41 : 0x40);
734 b43_write16(dev, 0x050C, value);
735 if ((phy->type == B43_PHYTYPE_N) || (phy->type == B43_PHYTYPE_LP))
736 b43_write16(dev, 0x0514, 0x1A02);
737 b43_write16(dev, 0x0508, 0x0000);
738 b43_write16(dev, 0x050A, 0x0000);
739 b43_write16(dev, 0x054C, 0x0000);
740 b43_write16(dev, 0x056A, 0x0014);
741 b43_write16(dev, 0x0568, 0x0826);
742 b43_write16(dev, 0x0500, 0x0000);
743 if (!pa_on && (phy->type == B43_PHYTYPE_N)) {
744 //SPEC TODO
745 }
746
747 switch (phy->type) {
748 case B43_PHYTYPE_N:
749 b43_write16(dev, 0x0502, 0x00D0);
750 break;
751 case B43_PHYTYPE_LP:
752 b43_write16(dev, 0x0502, 0x0050);
753 break;
754 default:
755 b43_write16(dev, 0x0502, 0x0030);
756 }
757
758 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
759 b43_radio_write16(dev, 0x0051, 0x0017);
760 for (i = 0x00; i < max_loop; i++) {
761 value = b43_read16(dev, 0x050E);
762 if (value & 0x0080)
763 break;
764 udelay(10);
765 }
766 for (i = 0x00; i < 0x0A; i++) {
767 value = b43_read16(dev, 0x050E);
768 if (value & 0x0400)
769 break;
770 udelay(10);
771 }
772 for (i = 0x00; i < 0x19; i++) {
773 value = b43_read16(dev, 0x0690);
774 if (!(value & 0x0100))
775 break;
776 udelay(10);
777 }
778 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
779 b43_radio_write16(dev, 0x0051, 0x0037);
780
781 write_unlock(&wl->tx_lock);
782 spin_unlock_irq(&wl->irq_lock);
783 }
784
785 static void key_write(struct b43_wldev *dev,
786 u8 index, u8 algorithm, const u8 *key)
787 {
788 unsigned int i;
789 u32 offset;
790 u16 value;
791 u16 kidx;
792
793 /* Key index/algo block */
794 kidx = b43_kidx_to_fw(dev, index);
795 value = ((kidx << 4) | algorithm);
796 b43_shm_write16(dev, B43_SHM_SHARED,
797 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
798
799 /* Write the key to the Key Table Pointer offset */
800 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
801 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
802 value = key[i];
803 value |= (u16) (key[i + 1]) << 8;
804 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
805 }
806 }
807
808 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
809 {
810 u32 addrtmp[2] = { 0, 0, };
811 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
812
813 if (b43_new_kidx_api(dev))
814 pairwise_keys_start = B43_NR_GROUP_KEYS;
815
816 B43_WARN_ON(index < pairwise_keys_start);
817 /* We have four default TX keys and possibly four default RX keys.
818 * Physical mac 0 is mapped to physical key 4 or 8, depending
819 * on the firmware version.
820 * So we must adjust the index here.
821 */
822 index -= pairwise_keys_start;
823 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
824
825 if (addr) {
826 addrtmp[0] = addr[0];
827 addrtmp[0] |= ((u32) (addr[1]) << 8);
828 addrtmp[0] |= ((u32) (addr[2]) << 16);
829 addrtmp[0] |= ((u32) (addr[3]) << 24);
830 addrtmp[1] = addr[4];
831 addrtmp[1] |= ((u32) (addr[5]) << 8);
832 }
833
834 /* Receive match transmitter address (RCMTA) mechanism */
835 b43_shm_write32(dev, B43_SHM_RCMTA,
836 (index * 2) + 0, addrtmp[0]);
837 b43_shm_write16(dev, B43_SHM_RCMTA,
838 (index * 2) + 1, addrtmp[1]);
839 }
840
841 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
842 * When a packet is received, the iv32 is checked.
843 * - if it doesn't the packet is returned without modification (and software
844 * decryption can be done). That's what happen when iv16 wrap.
845 * - if it does, the rc4 key is computed, and decryption is tried.
846 * Either it will success and B43_RX_MAC_DEC is returned,
847 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
848 * and the packet is not usable (it got modified by the ucode).
849 * So in order to never have B43_RX_MAC_DECERR, we should provide
850 * a iv32 and phase1key that match. Because we drop packets in case of
851 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
852 * packets will be lost without higher layer knowing (ie no resync possible
853 * until next wrap).
854 *
855 * NOTE : this should support 50 key like RCMTA because
856 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
857 */
858 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
859 u16 *phase1key)
860 {
861 unsigned int i;
862 u32 offset;
863 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
864
865 if (!modparam_hwtkip)
866 return;
867
868 if (b43_new_kidx_api(dev))
869 pairwise_keys_start = B43_NR_GROUP_KEYS;
870
871 B43_WARN_ON(index < pairwise_keys_start);
872 /* We have four default TX keys and possibly four default RX keys.
873 * Physical mac 0 is mapped to physical key 4 or 8, depending
874 * on the firmware version.
875 * So we must adjust the index here.
876 */
877 index -= pairwise_keys_start;
878 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
879
880 if (b43_debug(dev, B43_DBG_KEYS)) {
881 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
882 index, iv32);
883 }
884 /* Write the key to the RX tkip shared mem */
885 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
886 for (i = 0; i < 10; i += 2) {
887 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
888 phase1key ? phase1key[i / 2] : 0);
889 }
890 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
891 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
892 }
893
894 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
895 struct ieee80211_key_conf *keyconf, const u8 *addr,
896 u32 iv32, u16 *phase1key)
897 {
898 struct b43_wl *wl = hw_to_b43_wl(hw);
899 struct b43_wldev *dev;
900 int index = keyconf->hw_key_idx;
901
902 if (B43_WARN_ON(!modparam_hwtkip))
903 return;
904
905 mutex_lock(&wl->mutex);
906
907 dev = wl->current_dev;
908 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
909 goto out_unlock;
910
911 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
912
913 rx_tkip_phase1_write(dev, index, iv32, phase1key);
914 keymac_write(dev, index, addr);
915
916 out_unlock:
917 mutex_unlock(&wl->mutex);
918 }
919
920 static void do_key_write(struct b43_wldev *dev,
921 u8 index, u8 algorithm,
922 const u8 *key, size_t key_len, const u8 *mac_addr)
923 {
924 u8 buf[B43_SEC_KEYSIZE] = { 0, };
925 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
926
927 if (b43_new_kidx_api(dev))
928 pairwise_keys_start = B43_NR_GROUP_KEYS;
929
930 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
931 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
932
933 if (index >= pairwise_keys_start)
934 keymac_write(dev, index, NULL); /* First zero out mac. */
935 if (algorithm == B43_SEC_ALGO_TKIP) {
936 /*
937 * We should provide an initial iv32, phase1key pair.
938 * We could start with iv32=0 and compute the corresponding
939 * phase1key, but this means calling ieee80211_get_tkip_key
940 * with a fake skb (or export other tkip function).
941 * Because we are lazy we hope iv32 won't start with
942 * 0xffffffff and let's b43_op_update_tkip_key provide a
943 * correct pair.
944 */
945 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
946 } else if (index >= pairwise_keys_start) /* clear it */
947 rx_tkip_phase1_write(dev, index, 0, NULL);
948 if (key)
949 memcpy(buf, key, key_len);
950 key_write(dev, index, algorithm, buf);
951 if (index >= pairwise_keys_start)
952 keymac_write(dev, index, mac_addr);
953
954 dev->key[index].algorithm = algorithm;
955 }
956
957 static int b43_key_write(struct b43_wldev *dev,
958 int index, u8 algorithm,
959 const u8 *key, size_t key_len,
960 const u8 *mac_addr,
961 struct ieee80211_key_conf *keyconf)
962 {
963 int i;
964 int pairwise_keys_start;
965
966 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
967 * - Temporal Encryption Key (128 bits)
968 * - Temporal Authenticator Tx MIC Key (64 bits)
969 * - Temporal Authenticator Rx MIC Key (64 bits)
970 *
971 * Hardware only store TEK
972 */
973 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
974 key_len = 16;
975 if (key_len > B43_SEC_KEYSIZE)
976 return -EINVAL;
977 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
978 /* Check that we don't already have this key. */
979 B43_WARN_ON(dev->key[i].keyconf == keyconf);
980 }
981 if (index < 0) {
982 /* Pairwise key. Get an empty slot for the key. */
983 if (b43_new_kidx_api(dev))
984 pairwise_keys_start = B43_NR_GROUP_KEYS;
985 else
986 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
987 for (i = pairwise_keys_start;
988 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
989 i++) {
990 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
991 if (!dev->key[i].keyconf) {
992 /* found empty */
993 index = i;
994 break;
995 }
996 }
997 if (index < 0) {
998 b43warn(dev->wl, "Out of hardware key memory\n");
999 return -ENOSPC;
1000 }
1001 } else
1002 B43_WARN_ON(index > 3);
1003
1004 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
1005 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1006 /* Default RX key */
1007 B43_WARN_ON(mac_addr);
1008 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
1009 }
1010 keyconf->hw_key_idx = index;
1011 dev->key[index].keyconf = keyconf;
1012
1013 return 0;
1014 }
1015
1016 static int b43_key_clear(struct b43_wldev *dev, int index)
1017 {
1018 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
1019 return -EINVAL;
1020 do_key_write(dev, index, B43_SEC_ALGO_NONE,
1021 NULL, B43_SEC_KEYSIZE, NULL);
1022 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1023 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
1024 NULL, B43_SEC_KEYSIZE, NULL);
1025 }
1026 dev->key[index].keyconf = NULL;
1027
1028 return 0;
1029 }
1030
1031 static void b43_clear_keys(struct b43_wldev *dev)
1032 {
1033 int i, count;
1034
1035 if (b43_new_kidx_api(dev))
1036 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1037 else
1038 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1039 for (i = 0; i < count; i++)
1040 b43_key_clear(dev, i);
1041 }
1042
1043 static void b43_dump_keymemory(struct b43_wldev *dev)
1044 {
1045 unsigned int i, index, count, offset, pairwise_keys_start;
1046 u8 mac[ETH_ALEN];
1047 u16 algo;
1048 u32 rcmta0;
1049 u16 rcmta1;
1050 u64 hf;
1051 struct b43_key *key;
1052
1053 if (!b43_debug(dev, B43_DBG_KEYS))
1054 return;
1055
1056 hf = b43_hf_read(dev);
1057 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1058 !!(hf & B43_HF_USEDEFKEYS));
1059 if (b43_new_kidx_api(dev)) {
1060 pairwise_keys_start = B43_NR_GROUP_KEYS;
1061 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1062 } else {
1063 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1064 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1065 }
1066 for (index = 0; index < count; index++) {
1067 key = &(dev->key[index]);
1068 printk(KERN_DEBUG "Key slot %02u: %s",
1069 index, (key->keyconf == NULL) ? " " : "*");
1070 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1071 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1072 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1073 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1074 }
1075
1076 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1077 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1078 printk(" Algo: %04X/%02X", algo, key->algorithm);
1079
1080 if (index >= pairwise_keys_start) {
1081 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1082 printk(" TKIP: ");
1083 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1084 for (i = 0; i < 14; i += 2) {
1085 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1086 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1087 }
1088 }
1089 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1090 ((index - pairwise_keys_start) * 2) + 0);
1091 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1092 ((index - pairwise_keys_start) * 2) + 1);
1093 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1094 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1095 printk(" MAC: %pM", mac);
1096 } else
1097 printk(" DEFAULT KEY");
1098 printk("\n");
1099 }
1100 }
1101
1102 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1103 {
1104 u32 macctl;
1105 u16 ucstat;
1106 bool hwps;
1107 bool awake;
1108 int i;
1109
1110 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1111 (ps_flags & B43_PS_DISABLED));
1112 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1113
1114 if (ps_flags & B43_PS_ENABLED) {
1115 hwps = 1;
1116 } else if (ps_flags & B43_PS_DISABLED) {
1117 hwps = 0;
1118 } else {
1119 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1120 // and thus is not an AP and we are associated, set bit 25
1121 }
1122 if (ps_flags & B43_PS_AWAKE) {
1123 awake = 1;
1124 } else if (ps_flags & B43_PS_ASLEEP) {
1125 awake = 0;
1126 } else {
1127 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1128 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1129 // successful, set bit26
1130 }
1131
1132 /* FIXME: For now we force awake-on and hwps-off */
1133 hwps = 0;
1134 awake = 1;
1135
1136 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1137 if (hwps)
1138 macctl |= B43_MACCTL_HWPS;
1139 else
1140 macctl &= ~B43_MACCTL_HWPS;
1141 if (awake)
1142 macctl |= B43_MACCTL_AWAKE;
1143 else
1144 macctl &= ~B43_MACCTL_AWAKE;
1145 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1146 /* Commit write */
1147 b43_read32(dev, B43_MMIO_MACCTL);
1148 if (awake && dev->dev->id.revision >= 5) {
1149 /* Wait for the microcode to wake up. */
1150 for (i = 0; i < 100; i++) {
1151 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1152 B43_SHM_SH_UCODESTAT);
1153 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1154 break;
1155 udelay(10);
1156 }
1157 }
1158 }
1159
1160 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1161 {
1162 u32 tmslow;
1163 u32 macctl;
1164
1165 flags |= B43_TMSLOW_PHYCLKEN;
1166 flags |= B43_TMSLOW_PHYRESET;
1167 ssb_device_enable(dev->dev, flags);
1168 msleep(2); /* Wait for the PLL to turn on. */
1169
1170 /* Now take the PHY out of Reset again */
1171 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1172 tmslow |= SSB_TMSLOW_FGC;
1173 tmslow &= ~B43_TMSLOW_PHYRESET;
1174 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1175 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1176 msleep(1);
1177 tmslow &= ~SSB_TMSLOW_FGC;
1178 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1179 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1180 msleep(1);
1181
1182 /* Turn Analog ON, but only if we already know the PHY-type.
1183 * This protects against very early setup where we don't know the
1184 * PHY-type, yet. wireless_core_reset will be called once again later,
1185 * when we know the PHY-type. */
1186 if (dev->phy.ops)
1187 dev->phy.ops->switch_analog(dev, 1);
1188
1189 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1190 macctl &= ~B43_MACCTL_GMODE;
1191 if (flags & B43_TMSLOW_GMODE)
1192 macctl |= B43_MACCTL_GMODE;
1193 macctl |= B43_MACCTL_IHR_ENABLED;
1194 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1195 }
1196
1197 static void handle_irq_transmit_status(struct b43_wldev *dev)
1198 {
1199 u32 v0, v1;
1200 u16 tmp;
1201 struct b43_txstatus stat;
1202
1203 while (1) {
1204 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1205 if (!(v0 & 0x00000001))
1206 break;
1207 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1208
1209 stat.cookie = (v0 >> 16);
1210 stat.seq = (v1 & 0x0000FFFF);
1211 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1212 tmp = (v0 & 0x0000FFFF);
1213 stat.frame_count = ((tmp & 0xF000) >> 12);
1214 stat.rts_count = ((tmp & 0x0F00) >> 8);
1215 stat.supp_reason = ((tmp & 0x001C) >> 2);
1216 stat.pm_indicated = !!(tmp & 0x0080);
1217 stat.intermediate = !!(tmp & 0x0040);
1218 stat.for_ampdu = !!(tmp & 0x0020);
1219 stat.acked = !!(tmp & 0x0002);
1220
1221 b43_handle_txstatus(dev, &stat);
1222 }
1223 }
1224
1225 static void drain_txstatus_queue(struct b43_wldev *dev)
1226 {
1227 u32 dummy;
1228
1229 if (dev->dev->id.revision < 5)
1230 return;
1231 /* Read all entries from the microcode TXstatus FIFO
1232 * and throw them away.
1233 */
1234 while (1) {
1235 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1236 if (!(dummy & 0x00000001))
1237 break;
1238 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1239 }
1240 }
1241
1242 static u32 b43_jssi_read(struct b43_wldev *dev)
1243 {
1244 u32 val = 0;
1245
1246 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1247 val <<= 16;
1248 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1249
1250 return val;
1251 }
1252
1253 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1254 {
1255 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1256 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1257 }
1258
1259 static void b43_generate_noise_sample(struct b43_wldev *dev)
1260 {
1261 b43_jssi_write(dev, 0x7F7F7F7F);
1262 b43_write32(dev, B43_MMIO_MACCMD,
1263 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1264 }
1265
1266 static void b43_calculate_link_quality(struct b43_wldev *dev)
1267 {
1268 /* Top half of Link Quality calculation. */
1269
1270 if (dev->phy.type != B43_PHYTYPE_G)
1271 return;
1272 if (dev->noisecalc.calculation_running)
1273 return;
1274 dev->noisecalc.calculation_running = 1;
1275 dev->noisecalc.nr_samples = 0;
1276
1277 b43_generate_noise_sample(dev);
1278 }
1279
1280 static void handle_irq_noise(struct b43_wldev *dev)
1281 {
1282 struct b43_phy_g *phy = dev->phy.g;
1283 u16 tmp;
1284 u8 noise[4];
1285 u8 i, j;
1286 s32 average;
1287
1288 /* Bottom half of Link Quality calculation. */
1289
1290 if (dev->phy.type != B43_PHYTYPE_G)
1291 return;
1292
1293 /* Possible race condition: It might be possible that the user
1294 * changed to a different channel in the meantime since we
1295 * started the calculation. We ignore that fact, since it's
1296 * not really that much of a problem. The background noise is
1297 * an estimation only anyway. Slightly wrong results will get damped
1298 * by the averaging of the 8 sample rounds. Additionally the
1299 * value is shortlived. So it will be replaced by the next noise
1300 * calculation round soon. */
1301
1302 B43_WARN_ON(!dev->noisecalc.calculation_running);
1303 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1304 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1305 noise[2] == 0x7F || noise[3] == 0x7F)
1306 goto generate_new;
1307
1308 /* Get the noise samples. */
1309 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1310 i = dev->noisecalc.nr_samples;
1311 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1312 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1313 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1314 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1315 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1316 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1317 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1318 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1319 dev->noisecalc.nr_samples++;
1320 if (dev->noisecalc.nr_samples == 8) {
1321 /* Calculate the Link Quality by the noise samples. */
1322 average = 0;
1323 for (i = 0; i < 8; i++) {
1324 for (j = 0; j < 4; j++)
1325 average += dev->noisecalc.samples[i][j];
1326 }
1327 average /= (8 * 4);
1328 average *= 125;
1329 average += 64;
1330 average /= 128;
1331 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1332 tmp = (tmp / 128) & 0x1F;
1333 if (tmp >= 8)
1334 average += 2;
1335 else
1336 average -= 25;
1337 if (tmp == 8)
1338 average -= 72;
1339 else
1340 average -= 48;
1341
1342 dev->stats.link_noise = average;
1343 dev->noisecalc.calculation_running = 0;
1344 return;
1345 }
1346 generate_new:
1347 b43_generate_noise_sample(dev);
1348 }
1349
1350 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1351 {
1352 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1353 ///TODO: PS TBTT
1354 } else {
1355 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1356 b43_power_saving_ctl_bits(dev, 0);
1357 }
1358 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1359 dev->dfq_valid = 1;
1360 }
1361
1362 static void handle_irq_atim_end(struct b43_wldev *dev)
1363 {
1364 if (dev->dfq_valid) {
1365 b43_write32(dev, B43_MMIO_MACCMD,
1366 b43_read32(dev, B43_MMIO_MACCMD)
1367 | B43_MACCMD_DFQ_VALID);
1368 dev->dfq_valid = 0;
1369 }
1370 }
1371
1372 static void handle_irq_pmq(struct b43_wldev *dev)
1373 {
1374 u32 tmp;
1375
1376 //TODO: AP mode.
1377
1378 while (1) {
1379 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1380 if (!(tmp & 0x00000008))
1381 break;
1382 }
1383 /* 16bit write is odd, but correct. */
1384 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1385 }
1386
1387 static void b43_write_template_common(struct b43_wldev *dev,
1388 const u8 *data, u16 size,
1389 u16 ram_offset,
1390 u16 shm_size_offset, u8 rate)
1391 {
1392 u32 i, tmp;
1393 struct b43_plcp_hdr4 plcp;
1394
1395 plcp.data = 0;
1396 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1397 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1398 ram_offset += sizeof(u32);
1399 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1400 * So leave the first two bytes of the next write blank.
1401 */
1402 tmp = (u32) (data[0]) << 16;
1403 tmp |= (u32) (data[1]) << 24;
1404 b43_ram_write(dev, ram_offset, tmp);
1405 ram_offset += sizeof(u32);
1406 for (i = 2; i < size; i += sizeof(u32)) {
1407 tmp = (u32) (data[i + 0]);
1408 if (i + 1 < size)
1409 tmp |= (u32) (data[i + 1]) << 8;
1410 if (i + 2 < size)
1411 tmp |= (u32) (data[i + 2]) << 16;
1412 if (i + 3 < size)
1413 tmp |= (u32) (data[i + 3]) << 24;
1414 b43_ram_write(dev, ram_offset + i - 2, tmp);
1415 }
1416 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1417 size + sizeof(struct b43_plcp_hdr6));
1418 }
1419
1420 /* Check if the use of the antenna that ieee80211 told us to
1421 * use is possible. This will fall back to DEFAULT.
1422 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1423 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1424 u8 antenna_nr)
1425 {
1426 u8 antenna_mask;
1427
1428 if (antenna_nr == 0) {
1429 /* Zero means "use default antenna". That's always OK. */
1430 return 0;
1431 }
1432
1433 /* Get the mask of available antennas. */
1434 if (dev->phy.gmode)
1435 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1436 else
1437 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1438
1439 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1440 /* This antenna is not available. Fall back to default. */
1441 return 0;
1442 }
1443
1444 return antenna_nr;
1445 }
1446
1447 /* Convert a b43 antenna number value to the PHY TX control value. */
1448 static u16 b43_antenna_to_phyctl(int antenna)
1449 {
1450 switch (antenna) {
1451 case B43_ANTENNA0:
1452 return B43_TXH_PHY_ANT0;
1453 case B43_ANTENNA1:
1454 return B43_TXH_PHY_ANT1;
1455 case B43_ANTENNA2:
1456 return B43_TXH_PHY_ANT2;
1457 case B43_ANTENNA3:
1458 return B43_TXH_PHY_ANT3;
1459 case B43_ANTENNA_AUTO:
1460 return B43_TXH_PHY_ANT01AUTO;
1461 }
1462 B43_WARN_ON(1);
1463 return 0;
1464 }
1465
1466 static void b43_write_beacon_template(struct b43_wldev *dev,
1467 u16 ram_offset,
1468 u16 shm_size_offset)
1469 {
1470 unsigned int i, len, variable_len;
1471 const struct ieee80211_mgmt *bcn;
1472 const u8 *ie;
1473 bool tim_found = 0;
1474 unsigned int rate;
1475 u16 ctl;
1476 int antenna;
1477 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1478
1479 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1480 len = min((size_t) dev->wl->current_beacon->len,
1481 0x200 - sizeof(struct b43_plcp_hdr6));
1482 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1483
1484 b43_write_template_common(dev, (const u8 *)bcn,
1485 len, ram_offset, shm_size_offset, rate);
1486
1487 /* Write the PHY TX control parameters. */
1488 antenna = B43_ANTENNA_DEFAULT;
1489 antenna = b43_antenna_to_phyctl(antenna);
1490 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1491 /* We can't send beacons with short preamble. Would get PHY errors. */
1492 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1493 ctl &= ~B43_TXH_PHY_ANT;
1494 ctl &= ~B43_TXH_PHY_ENC;
1495 ctl |= antenna;
1496 if (b43_is_cck_rate(rate))
1497 ctl |= B43_TXH_PHY_ENC_CCK;
1498 else
1499 ctl |= B43_TXH_PHY_ENC_OFDM;
1500 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1501
1502 /* Find the position of the TIM and the DTIM_period value
1503 * and write them to SHM. */
1504 ie = bcn->u.beacon.variable;
1505 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1506 for (i = 0; i < variable_len - 2; ) {
1507 uint8_t ie_id, ie_len;
1508
1509 ie_id = ie[i];
1510 ie_len = ie[i + 1];
1511 if (ie_id == 5) {
1512 u16 tim_position;
1513 u16 dtim_period;
1514 /* This is the TIM Information Element */
1515
1516 /* Check whether the ie_len is in the beacon data range. */
1517 if (variable_len < ie_len + 2 + i)
1518 break;
1519 /* A valid TIM is at least 4 bytes long. */
1520 if (ie_len < 4)
1521 break;
1522 tim_found = 1;
1523
1524 tim_position = sizeof(struct b43_plcp_hdr6);
1525 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1526 tim_position += i;
1527
1528 dtim_period = ie[i + 3];
1529
1530 b43_shm_write16(dev, B43_SHM_SHARED,
1531 B43_SHM_SH_TIMBPOS, tim_position);
1532 b43_shm_write16(dev, B43_SHM_SHARED,
1533 B43_SHM_SH_DTIMPER, dtim_period);
1534 break;
1535 }
1536 i += ie_len + 2;
1537 }
1538 if (!tim_found) {
1539 /*
1540 * If ucode wants to modify TIM do it behind the beacon, this
1541 * will happen, for example, when doing mesh networking.
1542 */
1543 b43_shm_write16(dev, B43_SHM_SHARED,
1544 B43_SHM_SH_TIMBPOS,
1545 len + sizeof(struct b43_plcp_hdr6));
1546 b43_shm_write16(dev, B43_SHM_SHARED,
1547 B43_SHM_SH_DTIMPER, 0);
1548 }
1549 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1550 }
1551
1552 static void b43_upload_beacon0(struct b43_wldev *dev)
1553 {
1554 struct b43_wl *wl = dev->wl;
1555
1556 if (wl->beacon0_uploaded)
1557 return;
1558 b43_write_beacon_template(dev, 0x68, 0x18);
1559 wl->beacon0_uploaded = 1;
1560 }
1561
1562 static void b43_upload_beacon1(struct b43_wldev *dev)
1563 {
1564 struct b43_wl *wl = dev->wl;
1565
1566 if (wl->beacon1_uploaded)
1567 return;
1568 b43_write_beacon_template(dev, 0x468, 0x1A);
1569 wl->beacon1_uploaded = 1;
1570 }
1571
1572 static void handle_irq_beacon(struct b43_wldev *dev)
1573 {
1574 struct b43_wl *wl = dev->wl;
1575 u32 cmd, beacon0_valid, beacon1_valid;
1576
1577 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1578 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1579 return;
1580
1581 /* This is the bottom half of the asynchronous beacon update. */
1582
1583 /* Ignore interrupt in the future. */
1584 dev->irq_mask &= ~B43_IRQ_BEACON;
1585
1586 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1587 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1588 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1589
1590 /* Schedule interrupt manually, if busy. */
1591 if (beacon0_valid && beacon1_valid) {
1592 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1593 dev->irq_mask |= B43_IRQ_BEACON;
1594 return;
1595 }
1596
1597 if (unlikely(wl->beacon_templates_virgin)) {
1598 /* We never uploaded a beacon before.
1599 * Upload both templates now, but only mark one valid. */
1600 wl->beacon_templates_virgin = 0;
1601 b43_upload_beacon0(dev);
1602 b43_upload_beacon1(dev);
1603 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1604 cmd |= B43_MACCMD_BEACON0_VALID;
1605 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1606 } else {
1607 if (!beacon0_valid) {
1608 b43_upload_beacon0(dev);
1609 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1610 cmd |= B43_MACCMD_BEACON0_VALID;
1611 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1612 } else if (!beacon1_valid) {
1613 b43_upload_beacon1(dev);
1614 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1615 cmd |= B43_MACCMD_BEACON1_VALID;
1616 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1617 }
1618 }
1619 }
1620
1621 static void b43_beacon_update_trigger_work(struct work_struct *work)
1622 {
1623 struct b43_wl *wl = container_of(work, struct b43_wl,
1624 beacon_update_trigger);
1625 struct b43_wldev *dev;
1626
1627 mutex_lock(&wl->mutex);
1628 dev = wl->current_dev;
1629 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1630 spin_lock_irq(&wl->irq_lock);
1631 /* update beacon right away or defer to irq */
1632 handle_irq_beacon(dev);
1633 /* The handler might have updated the IRQ mask. */
1634 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1635 mmiowb();
1636 spin_unlock_irq(&wl->irq_lock);
1637 }
1638 mutex_unlock(&wl->mutex);
1639 }
1640
1641 /* Asynchronously update the packet templates in template RAM.
1642 * Locking: Requires wl->irq_lock to be locked. */
1643 static void b43_update_templates(struct b43_wl *wl)
1644 {
1645 struct sk_buff *beacon;
1646
1647 /* This is the top half of the ansynchronous beacon update.
1648 * The bottom half is the beacon IRQ.
1649 * Beacon update must be asynchronous to avoid sending an
1650 * invalid beacon. This can happen for example, if the firmware
1651 * transmits a beacon while we are updating it. */
1652
1653 /* We could modify the existing beacon and set the aid bit in
1654 * the TIM field, but that would probably require resizing and
1655 * moving of data within the beacon template.
1656 * Simply request a new beacon and let mac80211 do the hard work. */
1657 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1658 if (unlikely(!beacon))
1659 return;
1660
1661 if (wl->current_beacon)
1662 dev_kfree_skb_any(wl->current_beacon);
1663 wl->current_beacon = beacon;
1664 wl->beacon0_uploaded = 0;
1665 wl->beacon1_uploaded = 0;
1666 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1667 }
1668
1669 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1670 {
1671 b43_time_lock(dev);
1672 if (dev->dev->id.revision >= 3) {
1673 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1674 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1675 } else {
1676 b43_write16(dev, 0x606, (beacon_int >> 6));
1677 b43_write16(dev, 0x610, beacon_int);
1678 }
1679 b43_time_unlock(dev);
1680 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1681 }
1682
1683 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1684 {
1685 u16 reason;
1686
1687 /* Read the register that contains the reason code for the panic. */
1688 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1689 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1690
1691 switch (reason) {
1692 default:
1693 b43dbg(dev->wl, "The panic reason is unknown.\n");
1694 /* fallthrough */
1695 case B43_FWPANIC_DIE:
1696 /* Do not restart the controller or firmware.
1697 * The device is nonfunctional from now on.
1698 * Restarting would result in this panic to trigger again,
1699 * so we avoid that recursion. */
1700 break;
1701 case B43_FWPANIC_RESTART:
1702 b43_controller_restart(dev, "Microcode panic");
1703 break;
1704 }
1705 }
1706
1707 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1708 {
1709 unsigned int i, cnt;
1710 u16 reason, marker_id, marker_line;
1711 __le16 *buf;
1712
1713 /* The proprietary firmware doesn't have this IRQ. */
1714 if (!dev->fw.opensource)
1715 return;
1716
1717 /* Read the register that contains the reason code for this IRQ. */
1718 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1719
1720 switch (reason) {
1721 case B43_DEBUGIRQ_PANIC:
1722 b43_handle_firmware_panic(dev);
1723 break;
1724 case B43_DEBUGIRQ_DUMP_SHM:
1725 if (!B43_DEBUG)
1726 break; /* Only with driver debugging enabled. */
1727 buf = kmalloc(4096, GFP_ATOMIC);
1728 if (!buf) {
1729 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1730 goto out;
1731 }
1732 for (i = 0; i < 4096; i += 2) {
1733 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1734 buf[i / 2] = cpu_to_le16(tmp);
1735 }
1736 b43info(dev->wl, "Shared memory dump:\n");
1737 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1738 16, 2, buf, 4096, 1);
1739 kfree(buf);
1740 break;
1741 case B43_DEBUGIRQ_DUMP_REGS:
1742 if (!B43_DEBUG)
1743 break; /* Only with driver debugging enabled. */
1744 b43info(dev->wl, "Microcode register dump:\n");
1745 for (i = 0, cnt = 0; i < 64; i++) {
1746 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1747 if (cnt == 0)
1748 printk(KERN_INFO);
1749 printk("r%02u: 0x%04X ", i, tmp);
1750 cnt++;
1751 if (cnt == 6) {
1752 printk("\n");
1753 cnt = 0;
1754 }
1755 }
1756 printk("\n");
1757 break;
1758 case B43_DEBUGIRQ_MARKER:
1759 if (!B43_DEBUG)
1760 break; /* Only with driver debugging enabled. */
1761 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1762 B43_MARKER_ID_REG);
1763 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1764 B43_MARKER_LINE_REG);
1765 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1766 "at line number %u\n",
1767 marker_id, marker_line);
1768 break;
1769 default:
1770 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1771 reason);
1772 }
1773 out:
1774 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1775 b43_shm_write16(dev, B43_SHM_SCRATCH,
1776 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1777 }
1778
1779 /* Interrupt handler bottom-half */
1780 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1781 {
1782 u32 reason;
1783 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1784 u32 merged_dma_reason = 0;
1785 int i;
1786 unsigned long flags;
1787
1788 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1789
1790 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1791
1792 reason = dev->irq_reason;
1793 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1794 dma_reason[i] = dev->dma_reason[i];
1795 merged_dma_reason |= dma_reason[i];
1796 }
1797
1798 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1799 b43err(dev->wl, "MAC transmission error\n");
1800
1801 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1802 b43err(dev->wl, "PHY transmission error\n");
1803 rmb();
1804 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1805 atomic_set(&dev->phy.txerr_cnt,
1806 B43_PHY_TX_BADNESS_LIMIT);
1807 b43err(dev->wl, "Too many PHY TX errors, "
1808 "restarting the controller\n");
1809 b43_controller_restart(dev, "PHY TX errors");
1810 }
1811 }
1812
1813 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1814 B43_DMAIRQ_NONFATALMASK))) {
1815 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1816 b43err(dev->wl, "Fatal DMA error: "
1817 "0x%08X, 0x%08X, 0x%08X, "
1818 "0x%08X, 0x%08X, 0x%08X\n",
1819 dma_reason[0], dma_reason[1],
1820 dma_reason[2], dma_reason[3],
1821 dma_reason[4], dma_reason[5]);
1822 b43_controller_restart(dev, "DMA error");
1823 mmiowb();
1824 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1825 return;
1826 }
1827 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1828 b43err(dev->wl, "DMA error: "
1829 "0x%08X, 0x%08X, 0x%08X, "
1830 "0x%08X, 0x%08X, 0x%08X\n",
1831 dma_reason[0], dma_reason[1],
1832 dma_reason[2], dma_reason[3],
1833 dma_reason[4], dma_reason[5]);
1834 }
1835 }
1836
1837 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1838 handle_irq_ucode_debug(dev);
1839 if (reason & B43_IRQ_TBTT_INDI)
1840 handle_irq_tbtt_indication(dev);
1841 if (reason & B43_IRQ_ATIM_END)
1842 handle_irq_atim_end(dev);
1843 if (reason & B43_IRQ_BEACON)
1844 handle_irq_beacon(dev);
1845 if (reason & B43_IRQ_PMQ)
1846 handle_irq_pmq(dev);
1847 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1848 ;/* TODO */
1849 if (reason & B43_IRQ_NOISESAMPLE_OK)
1850 handle_irq_noise(dev);
1851
1852 /* Check the DMA reason registers for received data. */
1853 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1854 if (b43_using_pio_transfers(dev))
1855 b43_pio_rx(dev->pio.rx_queue);
1856 else
1857 b43_dma_rx(dev->dma.rx_ring);
1858 }
1859 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1860 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1861 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1862 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1863 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1864
1865 if (reason & B43_IRQ_TX_OK)
1866 handle_irq_transmit_status(dev);
1867
1868 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1869 mmiowb();
1870 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1871 }
1872
1873 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1874 {
1875 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1876
1877 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1878 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1879 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1880 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1881 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1882 /* Unused ring
1883 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1884 */
1885 }
1886
1887 /* Interrupt handler top-half */
1888 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1889 {
1890 irqreturn_t ret = IRQ_NONE;
1891 struct b43_wldev *dev = dev_id;
1892 u32 reason;
1893
1894 B43_WARN_ON(!dev);
1895
1896 spin_lock(&dev->wl->irq_lock);
1897
1898 if (unlikely(b43_status(dev) < B43_STAT_STARTED)) {
1899 /* This can only happen on shared IRQ lines. */
1900 goto out;
1901 }
1902 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1903 if (reason == 0xffffffff) /* shared IRQ */
1904 goto out;
1905 ret = IRQ_HANDLED;
1906 reason &= dev->irq_mask;
1907 if (!reason)
1908 goto out;
1909
1910 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1911 & 0x0001DC00;
1912 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1913 & 0x0000DC00;
1914 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1915 & 0x0000DC00;
1916 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1917 & 0x0001DC00;
1918 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1919 & 0x0000DC00;
1920 /* Unused ring
1921 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1922 & 0x0000DC00;
1923 */
1924
1925 b43_interrupt_ack(dev, reason);
1926 /* disable all IRQs. They are enabled again in the bottom half. */
1927 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
1928 /* save the reason code and call our bottom half. */
1929 dev->irq_reason = reason;
1930 tasklet_schedule(&dev->isr_tasklet);
1931 out:
1932 mmiowb();
1933 spin_unlock(&dev->wl->irq_lock);
1934
1935 return ret;
1936 }
1937
1938 void b43_do_release_fw(struct b43_firmware_file *fw)
1939 {
1940 release_firmware(fw->data);
1941 fw->data = NULL;
1942 fw->filename = NULL;
1943 }
1944
1945 static void b43_release_firmware(struct b43_wldev *dev)
1946 {
1947 b43_do_release_fw(&dev->fw.ucode);
1948 b43_do_release_fw(&dev->fw.pcm);
1949 b43_do_release_fw(&dev->fw.initvals);
1950 b43_do_release_fw(&dev->fw.initvals_band);
1951 }
1952
1953 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1954 {
1955 const char text[] =
1956 "You must go to " \
1957 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
1958 "and download the correct firmware for this driver version. " \
1959 "Please carefully read all instructions on this website.\n";
1960
1961 if (error)
1962 b43err(wl, text);
1963 else
1964 b43warn(wl, text);
1965 }
1966
1967 int b43_do_request_fw(struct b43_request_fw_context *ctx,
1968 const char *name,
1969 struct b43_firmware_file *fw)
1970 {
1971 const struct firmware *blob;
1972 struct b43_fw_header *hdr;
1973 u32 size;
1974 int err;
1975
1976 if (!name) {
1977 /* Don't fetch anything. Free possibly cached firmware. */
1978 /* FIXME: We should probably keep it anyway, to save some headache
1979 * on suspend/resume with multiband devices. */
1980 b43_do_release_fw(fw);
1981 return 0;
1982 }
1983 if (fw->filename) {
1984 if ((fw->type == ctx->req_type) &&
1985 (strcmp(fw->filename, name) == 0))
1986 return 0; /* Already have this fw. */
1987 /* Free the cached firmware first. */
1988 /* FIXME: We should probably do this later after we successfully
1989 * got the new fw. This could reduce headache with multiband devices.
1990 * We could also redesign this to cache the firmware for all possible
1991 * bands all the time. */
1992 b43_do_release_fw(fw);
1993 }
1994
1995 switch (ctx->req_type) {
1996 case B43_FWTYPE_PROPRIETARY:
1997 snprintf(ctx->fwname, sizeof(ctx->fwname),
1998 "b43%s/%s.fw",
1999 modparam_fwpostfix, name);
2000 break;
2001 case B43_FWTYPE_OPENSOURCE:
2002 snprintf(ctx->fwname, sizeof(ctx->fwname),
2003 "b43-open%s/%s.fw",
2004 modparam_fwpostfix, name);
2005 break;
2006 default:
2007 B43_WARN_ON(1);
2008 return -ENOSYS;
2009 }
2010 err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
2011 if (err == -ENOENT) {
2012 snprintf(ctx->errors[ctx->req_type],
2013 sizeof(ctx->errors[ctx->req_type]),
2014 "Firmware file \"%s\" not found\n", ctx->fwname);
2015 return err;
2016 } else if (err) {
2017 snprintf(ctx->errors[ctx->req_type],
2018 sizeof(ctx->errors[ctx->req_type]),
2019 "Firmware file \"%s\" request failed (err=%d)\n",
2020 ctx->fwname, err);
2021 return err;
2022 }
2023 if (blob->size < sizeof(struct b43_fw_header))
2024 goto err_format;
2025 hdr = (struct b43_fw_header *)(blob->data);
2026 switch (hdr->type) {
2027 case B43_FW_TYPE_UCODE:
2028 case B43_FW_TYPE_PCM:
2029 size = be32_to_cpu(hdr->size);
2030 if (size != blob->size - sizeof(struct b43_fw_header))
2031 goto err_format;
2032 /* fallthrough */
2033 case B43_FW_TYPE_IV:
2034 if (hdr->ver != 1)
2035 goto err_format;
2036 break;
2037 default:
2038 goto err_format;
2039 }
2040
2041 fw->data = blob;
2042 fw->filename = name;
2043 fw->type = ctx->req_type;
2044
2045 return 0;
2046
2047 err_format:
2048 snprintf(ctx->errors[ctx->req_type],
2049 sizeof(ctx->errors[ctx->req_type]),
2050 "Firmware file \"%s\" format error.\n", ctx->fwname);
2051 release_firmware(blob);
2052
2053 return -EPROTO;
2054 }
2055
2056 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2057 {
2058 struct b43_wldev *dev = ctx->dev;
2059 struct b43_firmware *fw = &ctx->dev->fw;
2060 const u8 rev = ctx->dev->dev->id.revision;
2061 const char *filename;
2062 u32 tmshigh;
2063 int err;
2064
2065 /* Get microcode */
2066 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2067 if ((rev >= 5) && (rev <= 10))
2068 filename = "ucode5";
2069 else if ((rev >= 11) && (rev <= 12))
2070 filename = "ucode11";
2071 else if (rev == 13)
2072 filename = "ucode13";
2073 else if (rev == 14)
2074 filename = "ucode14";
2075 else if (rev >= 15)
2076 filename = "ucode15";
2077 else
2078 goto err_no_ucode;
2079 err = b43_do_request_fw(ctx, filename, &fw->ucode);
2080 if (err)
2081 goto err_load;
2082
2083 /* Get PCM code */
2084 if ((rev >= 5) && (rev <= 10))
2085 filename = "pcm5";
2086 else if (rev >= 11)
2087 filename = NULL;
2088 else
2089 goto err_no_pcm;
2090 fw->pcm_request_failed = 0;
2091 err = b43_do_request_fw(ctx, filename, &fw->pcm);
2092 if (err == -ENOENT) {
2093 /* We did not find a PCM file? Not fatal, but
2094 * core rev <= 10 must do without hwcrypto then. */
2095 fw->pcm_request_failed = 1;
2096 } else if (err)
2097 goto err_load;
2098
2099 /* Get initvals */
2100 switch (dev->phy.type) {
2101 case B43_PHYTYPE_A:
2102 if ((rev >= 5) && (rev <= 10)) {
2103 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2104 filename = "a0g1initvals5";
2105 else
2106 filename = "a0g0initvals5";
2107 } else
2108 goto err_no_initvals;
2109 break;
2110 case B43_PHYTYPE_G:
2111 if ((rev >= 5) && (rev <= 10))
2112 filename = "b0g0initvals5";
2113 else if (rev >= 13)
2114 filename = "b0g0initvals13";
2115 else
2116 goto err_no_initvals;
2117 break;
2118 case B43_PHYTYPE_N:
2119 if ((rev >= 11) && (rev <= 12))
2120 filename = "n0initvals11";
2121 else
2122 goto err_no_initvals;
2123 break;
2124 case B43_PHYTYPE_LP:
2125 if (rev == 13)
2126 filename = "lp0initvals13";
2127 else if (rev == 14)
2128 filename = "lp0initvals14";
2129 else if (rev >= 15)
2130 filename = "lp0initvals15";
2131 else
2132 goto err_no_initvals;
2133 break;
2134 default:
2135 goto err_no_initvals;
2136 }
2137 err = b43_do_request_fw(ctx, filename, &fw->initvals);
2138 if (err)
2139 goto err_load;
2140
2141 /* Get bandswitch initvals */
2142 switch (dev->phy.type) {
2143 case B43_PHYTYPE_A:
2144 if ((rev >= 5) && (rev <= 10)) {
2145 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2146 filename = "a0g1bsinitvals5";
2147 else
2148 filename = "a0g0bsinitvals5";
2149 } else if (rev >= 11)
2150 filename = NULL;
2151 else
2152 goto err_no_initvals;
2153 break;
2154 case B43_PHYTYPE_G:
2155 if ((rev >= 5) && (rev <= 10))
2156 filename = "b0g0bsinitvals5";
2157 else if (rev >= 11)
2158 filename = NULL;
2159 else
2160 goto err_no_initvals;
2161 break;
2162 case B43_PHYTYPE_N:
2163 if ((rev >= 11) && (rev <= 12))
2164 filename = "n0bsinitvals11";
2165 else
2166 goto err_no_initvals;
2167 break;
2168 case B43_PHYTYPE_LP:
2169 if (rev == 13)
2170 filename = "lp0bsinitvals13";
2171 else if (rev == 14)
2172 filename = "lp0bsinitvals14";
2173 else if (rev >= 15)
2174 filename = "lp0bsinitvals15";
2175 else
2176 goto err_no_initvals;
2177 break;
2178 default:
2179 goto err_no_initvals;
2180 }
2181 err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2182 if (err)
2183 goto err_load;
2184
2185 return 0;
2186
2187 err_no_ucode:
2188 err = ctx->fatal_failure = -EOPNOTSUPP;
2189 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2190 "is required for your device (wl-core rev %u)\n", rev);
2191 goto error;
2192
2193 err_no_pcm:
2194 err = ctx->fatal_failure = -EOPNOTSUPP;
2195 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2196 "is required for your device (wl-core rev %u)\n", rev);
2197 goto error;
2198
2199 err_no_initvals:
2200 err = ctx->fatal_failure = -EOPNOTSUPP;
2201 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2202 "is required for your device (wl-core rev %u)\n", rev);
2203 goto error;
2204
2205 err_load:
2206 /* We failed to load this firmware image. The error message
2207 * already is in ctx->errors. Return and let our caller decide
2208 * what to do. */
2209 goto error;
2210
2211 error:
2212 b43_release_firmware(dev);
2213 return err;
2214 }
2215
2216 static int b43_request_firmware(struct b43_wldev *dev)
2217 {
2218 struct b43_request_fw_context *ctx;
2219 unsigned int i;
2220 int err;
2221 const char *errmsg;
2222
2223 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2224 if (!ctx)
2225 return -ENOMEM;
2226 ctx->dev = dev;
2227
2228 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2229 err = b43_try_request_fw(ctx);
2230 if (!err)
2231 goto out; /* Successfully loaded it. */
2232 err = ctx->fatal_failure;
2233 if (err)
2234 goto out;
2235
2236 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2237 err = b43_try_request_fw(ctx);
2238 if (!err)
2239 goto out; /* Successfully loaded it. */
2240 err = ctx->fatal_failure;
2241 if (err)
2242 goto out;
2243
2244 /* Could not find a usable firmware. Print the errors. */
2245 for (i = 0; i < B43_NR_FWTYPES; i++) {
2246 errmsg = ctx->errors[i];
2247 if (strlen(errmsg))
2248 b43err(dev->wl, errmsg);
2249 }
2250 b43_print_fw_helptext(dev->wl, 1);
2251 err = -ENOENT;
2252
2253 out:
2254 kfree(ctx);
2255 return err;
2256 }
2257
2258 static int b43_upload_microcode(struct b43_wldev *dev)
2259 {
2260 const size_t hdr_len = sizeof(struct b43_fw_header);
2261 const __be32 *data;
2262 unsigned int i, len;
2263 u16 fwrev, fwpatch, fwdate, fwtime;
2264 u32 tmp, macctl;
2265 int err = 0;
2266
2267 /* Jump the microcode PSM to offset 0 */
2268 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2269 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2270 macctl |= B43_MACCTL_PSM_JMP0;
2271 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2272 /* Zero out all microcode PSM registers and shared memory. */
2273 for (i = 0; i < 64; i++)
2274 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2275 for (i = 0; i < 4096; i += 2)
2276 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2277
2278 /* Upload Microcode. */
2279 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2280 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2281 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2282 for (i = 0; i < len; i++) {
2283 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2284 udelay(10);
2285 }
2286
2287 if (dev->fw.pcm.data) {
2288 /* Upload PCM data. */
2289 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2290 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2291 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2292 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2293 /* No need for autoinc bit in SHM_HW */
2294 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2295 for (i = 0; i < len; i++) {
2296 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2297 udelay(10);
2298 }
2299 }
2300
2301 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2302
2303 /* Start the microcode PSM */
2304 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2305 macctl &= ~B43_MACCTL_PSM_JMP0;
2306 macctl |= B43_MACCTL_PSM_RUN;
2307 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2308
2309 /* Wait for the microcode to load and respond */
2310 i = 0;
2311 while (1) {
2312 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2313 if (tmp == B43_IRQ_MAC_SUSPENDED)
2314 break;
2315 i++;
2316 if (i >= 20) {
2317 b43err(dev->wl, "Microcode not responding\n");
2318 b43_print_fw_helptext(dev->wl, 1);
2319 err = -ENODEV;
2320 goto error;
2321 }
2322 msleep_interruptible(50);
2323 if (signal_pending(current)) {
2324 err = -EINTR;
2325 goto error;
2326 }
2327 }
2328 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2329
2330 /* Get and check the revisions. */
2331 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2332 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2333 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2334 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2335
2336 if (fwrev <= 0x128) {
2337 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2338 "binary drivers older than version 4.x is unsupported. "
2339 "You must upgrade your firmware files.\n");
2340 b43_print_fw_helptext(dev->wl, 1);
2341 err = -EOPNOTSUPP;
2342 goto error;
2343 }
2344 dev->fw.rev = fwrev;
2345 dev->fw.patch = fwpatch;
2346 dev->fw.opensource = (fwdate == 0xFFFF);
2347
2348 /* Default to use-all-queues. */
2349 dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues;
2350 dev->qos_enabled = !!modparam_qos;
2351 /* Default to firmware/hardware crypto acceleration. */
2352 dev->hwcrypto_enabled = 1;
2353
2354 if (dev->fw.opensource) {
2355 u16 fwcapa;
2356
2357 /* Patchlevel info is encoded in the "time" field. */
2358 dev->fw.patch = fwtime;
2359 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2360 dev->fw.rev, dev->fw.patch);
2361
2362 fwcapa = b43_fwcapa_read(dev);
2363 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2364 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2365 /* Disable hardware crypto and fall back to software crypto. */
2366 dev->hwcrypto_enabled = 0;
2367 }
2368 if (!(fwcapa & B43_FWCAPA_QOS)) {
2369 b43info(dev->wl, "QoS not supported by firmware\n");
2370 /* Disable QoS. Tweak hw->queues to 1. It will be restored before
2371 * ieee80211_unregister to make sure the networking core can
2372 * properly free possible resources. */
2373 dev->wl->hw->queues = 1;
2374 dev->qos_enabled = 0;
2375 }
2376 } else {
2377 b43info(dev->wl, "Loading firmware version %u.%u "
2378 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2379 fwrev, fwpatch,
2380 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2381 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2382 if (dev->fw.pcm_request_failed) {
2383 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2384 "Hardware accelerated cryptography is disabled.\n");
2385 b43_print_fw_helptext(dev->wl, 0);
2386 }
2387 }
2388
2389 if (b43_is_old_txhdr_format(dev)) {
2390 /* We're over the deadline, but we keep support for old fw
2391 * until it turns out to be in major conflict with something new. */
2392 b43warn(dev->wl, "You are using an old firmware image. "
2393 "Support for old firmware will be removed soon "
2394 "(official deadline was July 2008).\n");
2395 b43_print_fw_helptext(dev->wl, 0);
2396 }
2397
2398 return 0;
2399
2400 error:
2401 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2402 macctl &= ~B43_MACCTL_PSM_RUN;
2403 macctl |= B43_MACCTL_PSM_JMP0;
2404 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2405
2406 return err;
2407 }
2408
2409 static int b43_write_initvals(struct b43_wldev *dev,
2410 const struct b43_iv *ivals,
2411 size_t count,
2412 size_t array_size)
2413 {
2414 const struct b43_iv *iv;
2415 u16 offset;
2416 size_t i;
2417 bool bit32;
2418
2419 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2420 iv = ivals;
2421 for (i = 0; i < count; i++) {
2422 if (array_size < sizeof(iv->offset_size))
2423 goto err_format;
2424 array_size -= sizeof(iv->offset_size);
2425 offset = be16_to_cpu(iv->offset_size);
2426 bit32 = !!(offset & B43_IV_32BIT);
2427 offset &= B43_IV_OFFSET_MASK;
2428 if (offset >= 0x1000)
2429 goto err_format;
2430 if (bit32) {
2431 u32 value;
2432
2433 if (array_size < sizeof(iv->data.d32))
2434 goto err_format;
2435 array_size -= sizeof(iv->data.d32);
2436
2437 value = get_unaligned_be32(&iv->data.d32);
2438 b43_write32(dev, offset, value);
2439
2440 iv = (const struct b43_iv *)((const uint8_t *)iv +
2441 sizeof(__be16) +
2442 sizeof(__be32));
2443 } else {
2444 u16 value;
2445
2446 if (array_size < sizeof(iv->data.d16))
2447 goto err_format;
2448 array_size -= sizeof(iv->data.d16);
2449
2450 value = be16_to_cpu(iv->data.d16);
2451 b43_write16(dev, offset, value);
2452
2453 iv = (const struct b43_iv *)((const uint8_t *)iv +
2454 sizeof(__be16) +
2455 sizeof(__be16));
2456 }
2457 }
2458 if (array_size)
2459 goto err_format;
2460
2461 return 0;
2462
2463 err_format:
2464 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2465 b43_print_fw_helptext(dev->wl, 1);
2466
2467 return -EPROTO;
2468 }
2469
2470 static int b43_upload_initvals(struct b43_wldev *dev)
2471 {
2472 const size_t hdr_len = sizeof(struct b43_fw_header);
2473 const struct b43_fw_header *hdr;
2474 struct b43_firmware *fw = &dev->fw;
2475 const struct b43_iv *ivals;
2476 size_t count;
2477 int err;
2478
2479 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2480 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2481 count = be32_to_cpu(hdr->size);
2482 err = b43_write_initvals(dev, ivals, count,
2483 fw->initvals.data->size - hdr_len);
2484 if (err)
2485 goto out;
2486 if (fw->initvals_band.data) {
2487 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2488 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2489 count = be32_to_cpu(hdr->size);
2490 err = b43_write_initvals(dev, ivals, count,
2491 fw->initvals_band.data->size - hdr_len);
2492 if (err)
2493 goto out;
2494 }
2495 out:
2496
2497 return err;
2498 }
2499
2500 /* Initialize the GPIOs
2501 * http://bcm-specs.sipsolutions.net/GPIO
2502 */
2503 static int b43_gpio_init(struct b43_wldev *dev)
2504 {
2505 struct ssb_bus *bus = dev->dev->bus;
2506 struct ssb_device *gpiodev, *pcidev = NULL;
2507 u32 mask, set;
2508
2509 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2510 & ~B43_MACCTL_GPOUTSMSK);
2511
2512 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2513 | 0x000F);
2514
2515 mask = 0x0000001F;
2516 set = 0x0000000F;
2517 if (dev->dev->bus->chip_id == 0x4301) {
2518 mask |= 0x0060;
2519 set |= 0x0060;
2520 }
2521 if (0 /* FIXME: conditional unknown */ ) {
2522 b43_write16(dev, B43_MMIO_GPIO_MASK,
2523 b43_read16(dev, B43_MMIO_GPIO_MASK)
2524 | 0x0100);
2525 mask |= 0x0180;
2526 set |= 0x0180;
2527 }
2528 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2529 b43_write16(dev, B43_MMIO_GPIO_MASK,
2530 b43_read16(dev, B43_MMIO_GPIO_MASK)
2531 | 0x0200);
2532 mask |= 0x0200;
2533 set |= 0x0200;
2534 }
2535 if (dev->dev->id.revision >= 2)
2536 mask |= 0x0010; /* FIXME: This is redundant. */
2537
2538 #ifdef CONFIG_SSB_DRIVER_PCICORE
2539 pcidev = bus->pcicore.dev;
2540 #endif
2541 gpiodev = bus->chipco.dev ? : pcidev;
2542 if (!gpiodev)
2543 return 0;
2544 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2545 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2546 & mask) | set);
2547
2548 return 0;
2549 }
2550
2551 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2552 static void b43_gpio_cleanup(struct b43_wldev *dev)
2553 {
2554 struct ssb_bus *bus = dev->dev->bus;
2555 struct ssb_device *gpiodev, *pcidev = NULL;
2556
2557 #ifdef CONFIG_SSB_DRIVER_PCICORE
2558 pcidev = bus->pcicore.dev;
2559 #endif
2560 gpiodev = bus->chipco.dev ? : pcidev;
2561 if (!gpiodev)
2562 return;
2563 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2564 }
2565
2566 /* http://bcm-specs.sipsolutions.net/EnableMac */
2567 void b43_mac_enable(struct b43_wldev *dev)
2568 {
2569 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2570 u16 fwstate;
2571
2572 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2573 B43_SHM_SH_UCODESTAT);
2574 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2575 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2576 b43err(dev->wl, "b43_mac_enable(): The firmware "
2577 "should be suspended, but current state is %u\n",
2578 fwstate);
2579 }
2580 }
2581
2582 dev->mac_suspended--;
2583 B43_WARN_ON(dev->mac_suspended < 0);
2584 if (dev->mac_suspended == 0) {
2585 b43_write32(dev, B43_MMIO_MACCTL,
2586 b43_read32(dev, B43_MMIO_MACCTL)
2587 | B43_MACCTL_ENABLED);
2588 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2589 B43_IRQ_MAC_SUSPENDED);
2590 /* Commit writes */
2591 b43_read32(dev, B43_MMIO_MACCTL);
2592 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2593 b43_power_saving_ctl_bits(dev, 0);
2594 }
2595 }
2596
2597 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2598 void b43_mac_suspend(struct b43_wldev *dev)
2599 {
2600 int i;
2601 u32 tmp;
2602
2603 might_sleep();
2604 B43_WARN_ON(dev->mac_suspended < 0);
2605
2606 if (dev->mac_suspended == 0) {
2607 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2608 b43_write32(dev, B43_MMIO_MACCTL,
2609 b43_read32(dev, B43_MMIO_MACCTL)
2610 & ~B43_MACCTL_ENABLED);
2611 /* force pci to flush the write */
2612 b43_read32(dev, B43_MMIO_MACCTL);
2613 for (i = 35; i; i--) {
2614 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2615 if (tmp & B43_IRQ_MAC_SUSPENDED)
2616 goto out;
2617 udelay(10);
2618 }
2619 /* Hm, it seems this will take some time. Use msleep(). */
2620 for (i = 40; i; i--) {
2621 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2622 if (tmp & B43_IRQ_MAC_SUSPENDED)
2623 goto out;
2624 msleep(1);
2625 }
2626 b43err(dev->wl, "MAC suspend failed\n");
2627 }
2628 out:
2629 dev->mac_suspended++;
2630 }
2631
2632 static void b43_adjust_opmode(struct b43_wldev *dev)
2633 {
2634 struct b43_wl *wl = dev->wl;
2635 u32 ctl;
2636 u16 cfp_pretbtt;
2637
2638 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2639 /* Reset status to STA infrastructure mode. */
2640 ctl &= ~B43_MACCTL_AP;
2641 ctl &= ~B43_MACCTL_KEEP_CTL;
2642 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2643 ctl &= ~B43_MACCTL_KEEP_BAD;
2644 ctl &= ~B43_MACCTL_PROMISC;
2645 ctl &= ~B43_MACCTL_BEACPROMISC;
2646 ctl |= B43_MACCTL_INFRA;
2647
2648 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2649 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2650 ctl |= B43_MACCTL_AP;
2651 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2652 ctl &= ~B43_MACCTL_INFRA;
2653
2654 if (wl->filter_flags & FIF_CONTROL)
2655 ctl |= B43_MACCTL_KEEP_CTL;
2656 if (wl->filter_flags & FIF_FCSFAIL)
2657 ctl |= B43_MACCTL_KEEP_BAD;
2658 if (wl->filter_flags & FIF_PLCPFAIL)
2659 ctl |= B43_MACCTL_KEEP_BADPLCP;
2660 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2661 ctl |= B43_MACCTL_PROMISC;
2662 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2663 ctl |= B43_MACCTL_BEACPROMISC;
2664
2665 /* Workaround: On old hardware the HW-MAC-address-filter
2666 * doesn't work properly, so always run promisc in filter
2667 * it in software. */
2668 if (dev->dev->id.revision <= 4)
2669 ctl |= B43_MACCTL_PROMISC;
2670
2671 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2672
2673 cfp_pretbtt = 2;
2674 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2675 if (dev->dev->bus->chip_id == 0x4306 &&
2676 dev->dev->bus->chip_rev == 3)
2677 cfp_pretbtt = 100;
2678 else
2679 cfp_pretbtt = 50;
2680 }
2681 b43_write16(dev, 0x612, cfp_pretbtt);
2682 }
2683
2684 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2685 {
2686 u16 offset;
2687
2688 if (is_ofdm) {
2689 offset = 0x480;
2690 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2691 } else {
2692 offset = 0x4C0;
2693 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2694 }
2695 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2696 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2697 }
2698
2699 static void b43_rate_memory_init(struct b43_wldev *dev)
2700 {
2701 switch (dev->phy.type) {
2702 case B43_PHYTYPE_A:
2703 case B43_PHYTYPE_G:
2704 case B43_PHYTYPE_N:
2705 case B43_PHYTYPE_LP:
2706 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2707 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2708 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2709 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2710 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2711 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2712 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2713 if (dev->phy.type == B43_PHYTYPE_A)
2714 break;
2715 /* fallthrough */
2716 case B43_PHYTYPE_B:
2717 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2718 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2719 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2720 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2721 break;
2722 default:
2723 B43_WARN_ON(1);
2724 }
2725 }
2726
2727 /* Set the default values for the PHY TX Control Words. */
2728 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2729 {
2730 u16 ctl = 0;
2731
2732 ctl |= B43_TXH_PHY_ENC_CCK;
2733 ctl |= B43_TXH_PHY_ANT01AUTO;
2734 ctl |= B43_TXH_PHY_TXPWR;
2735
2736 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2737 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2738 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2739 }
2740
2741 /* Set the TX-Antenna for management frames sent by firmware. */
2742 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2743 {
2744 u16 ant;
2745 u16 tmp;
2746
2747 ant = b43_antenna_to_phyctl(antenna);
2748
2749 /* For ACK/CTS */
2750 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2751 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2752 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2753 /* For Probe Resposes */
2754 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2755 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2756 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2757 }
2758
2759 /* This is the opposite of b43_chip_init() */
2760 static void b43_chip_exit(struct b43_wldev *dev)
2761 {
2762 b43_phy_exit(dev);
2763 b43_gpio_cleanup(dev);
2764 /* firmware is released later */
2765 }
2766
2767 /* Initialize the chip
2768 * http://bcm-specs.sipsolutions.net/ChipInit
2769 */
2770 static int b43_chip_init(struct b43_wldev *dev)
2771 {
2772 struct b43_phy *phy = &dev->phy;
2773 int err;
2774 u32 value32, macctl;
2775 u16 value16;
2776
2777 /* Initialize the MAC control */
2778 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2779 if (dev->phy.gmode)
2780 macctl |= B43_MACCTL_GMODE;
2781 macctl |= B43_MACCTL_INFRA;
2782 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2783
2784 err = b43_request_firmware(dev);
2785 if (err)
2786 goto out;
2787 err = b43_upload_microcode(dev);
2788 if (err)
2789 goto out; /* firmware is released later */
2790
2791 err = b43_gpio_init(dev);
2792 if (err)
2793 goto out; /* firmware is released later */
2794
2795 err = b43_upload_initvals(dev);
2796 if (err)
2797 goto err_gpio_clean;
2798
2799 /* Turn the Analog on and initialize the PHY. */
2800 phy->ops->switch_analog(dev, 1);
2801 err = b43_phy_init(dev);
2802 if (err)
2803 goto err_gpio_clean;
2804
2805 /* Disable Interference Mitigation. */
2806 if (phy->ops->interf_mitigation)
2807 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2808
2809 /* Select the antennae */
2810 if (phy->ops->set_rx_antenna)
2811 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2812 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2813
2814 if (phy->type == B43_PHYTYPE_B) {
2815 value16 = b43_read16(dev, 0x005E);
2816 value16 |= 0x0004;
2817 b43_write16(dev, 0x005E, value16);
2818 }
2819 b43_write32(dev, 0x0100, 0x01000000);
2820 if (dev->dev->id.revision < 5)
2821 b43_write32(dev, 0x010C, 0x01000000);
2822
2823 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2824 & ~B43_MACCTL_INFRA);
2825 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2826 | B43_MACCTL_INFRA);
2827
2828 /* Probe Response Timeout value */
2829 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2830 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2831
2832 /* Initially set the wireless operation mode. */
2833 b43_adjust_opmode(dev);
2834
2835 if (dev->dev->id.revision < 3) {
2836 b43_write16(dev, 0x060E, 0x0000);
2837 b43_write16(dev, 0x0610, 0x8000);
2838 b43_write16(dev, 0x0604, 0x0000);
2839 b43_write16(dev, 0x0606, 0x0200);
2840 } else {
2841 b43_write32(dev, 0x0188, 0x80000000);
2842 b43_write32(dev, 0x018C, 0x02000000);
2843 }
2844 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2845 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2846 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2847 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2848 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2849 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2850 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2851
2852 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2853 value32 |= 0x00100000;
2854 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2855
2856 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2857 dev->dev->bus->chipco.fast_pwrup_delay);
2858
2859 err = 0;
2860 b43dbg(dev->wl, "Chip initialized\n");
2861 out:
2862 return err;
2863
2864 err_gpio_clean:
2865 b43_gpio_cleanup(dev);
2866 return err;
2867 }
2868
2869 static void b43_periodic_every60sec(struct b43_wldev *dev)
2870 {
2871 const struct b43_phy_operations *ops = dev->phy.ops;
2872
2873 if (ops->pwork_60sec)
2874 ops->pwork_60sec(dev);
2875
2876 /* Force check the TX power emission now. */
2877 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2878 }
2879
2880 static void b43_periodic_every30sec(struct b43_wldev *dev)
2881 {
2882 /* Update device statistics. */
2883 b43_calculate_link_quality(dev);
2884 }
2885
2886 static void b43_periodic_every15sec(struct b43_wldev *dev)
2887 {
2888 struct b43_phy *phy = &dev->phy;
2889 u16 wdr;
2890
2891 if (dev->fw.opensource) {
2892 /* Check if the firmware is still alive.
2893 * It will reset the watchdog counter to 0 in its idle loop. */
2894 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2895 if (unlikely(wdr)) {
2896 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2897 b43_controller_restart(dev, "Firmware watchdog");
2898 return;
2899 } else {
2900 b43_shm_write16(dev, B43_SHM_SCRATCH,
2901 B43_WATCHDOG_REG, 1);
2902 }
2903 }
2904
2905 if (phy->ops->pwork_15sec)
2906 phy->ops->pwork_15sec(dev);
2907
2908 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2909 wmb();
2910 }
2911
2912 static void do_periodic_work(struct b43_wldev *dev)
2913 {
2914 unsigned int state;
2915
2916 state = dev->periodic_state;
2917 if (state % 4 == 0)
2918 b43_periodic_every60sec(dev);
2919 if (state % 2 == 0)
2920 b43_periodic_every30sec(dev);
2921 b43_periodic_every15sec(dev);
2922 }
2923
2924 /* Periodic work locking policy:
2925 * The whole periodic work handler is protected by
2926 * wl->mutex. If another lock is needed somewhere in the
2927 * pwork callchain, it's aquired in-place, where it's needed.
2928 */
2929 static void b43_periodic_work_handler(struct work_struct *work)
2930 {
2931 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2932 periodic_work.work);
2933 struct b43_wl *wl = dev->wl;
2934 unsigned long delay;
2935
2936 mutex_lock(&wl->mutex);
2937
2938 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2939 goto out;
2940 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2941 goto out_requeue;
2942
2943 do_periodic_work(dev);
2944
2945 dev->periodic_state++;
2946 out_requeue:
2947 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2948 delay = msecs_to_jiffies(50);
2949 else
2950 delay = round_jiffies_relative(HZ * 15);
2951 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2952 out:
2953 mutex_unlock(&wl->mutex);
2954 }
2955
2956 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2957 {
2958 struct delayed_work *work = &dev->periodic_work;
2959
2960 dev->periodic_state = 0;
2961 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2962 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2963 }
2964
2965 /* Check if communication with the device works correctly. */
2966 static int b43_validate_chipaccess(struct b43_wldev *dev)
2967 {
2968 u32 v, backup0, backup4;
2969
2970 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2971 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
2972
2973 /* Check for read/write and endianness problems. */
2974 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2975 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2976 goto error;
2977 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2978 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2979 goto error;
2980
2981 /* Check if unaligned 32bit SHM_SHARED access works properly.
2982 * However, don't bail out on failure, because it's noncritical. */
2983 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
2984 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
2985 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
2986 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
2987 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
2988 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
2989 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
2990 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
2991 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
2992 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
2993 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
2994 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
2995
2996 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
2997 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
2998
2999 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
3000 /* The 32bit register shadows the two 16bit registers
3001 * with update sideeffects. Validate this. */
3002 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3003 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3004 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3005 goto error;
3006 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3007 goto error;
3008 }
3009 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3010
3011 v = b43_read32(dev, B43_MMIO_MACCTL);
3012 v |= B43_MACCTL_GMODE;
3013 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3014 goto error;
3015
3016 return 0;
3017 error:
3018 b43err(dev->wl, "Failed to validate the chipaccess\n");
3019 return -ENODEV;
3020 }
3021
3022 static void b43_security_init(struct b43_wldev *dev)
3023 {
3024 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3025 /* KTP is a word address, but we address SHM bytewise.
3026 * So multiply by two.
3027 */
3028 dev->ktp *= 2;
3029 /* Number of RCMTA address slots */
3030 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3031 /* Clear the key memory. */
3032 b43_clear_keys(dev);
3033 }
3034
3035 #ifdef CONFIG_B43_HWRNG
3036 static int b43_rng_read(struct hwrng *rng, u32 *data)
3037 {
3038 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3039 unsigned long flags;
3040
3041 /* Don't take wl->mutex here, as it could deadlock with
3042 * hwrng internal locking. It's not needed to take
3043 * wl->mutex here, anyway. */
3044
3045 spin_lock_irqsave(&wl->irq_lock, flags);
3046 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
3047 spin_unlock_irqrestore(&wl->irq_lock, flags);
3048
3049 return (sizeof(u16));
3050 }
3051 #endif /* CONFIG_B43_HWRNG */
3052
3053 static void b43_rng_exit(struct b43_wl *wl)
3054 {
3055 #ifdef CONFIG_B43_HWRNG
3056 if (wl->rng_initialized)
3057 hwrng_unregister(&wl->rng);
3058 #endif /* CONFIG_B43_HWRNG */
3059 }
3060
3061 static int b43_rng_init(struct b43_wl *wl)
3062 {
3063 int err = 0;
3064
3065 #ifdef CONFIG_B43_HWRNG
3066 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3067 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3068 wl->rng.name = wl->rng_name;
3069 wl->rng.data_read = b43_rng_read;
3070 wl->rng.priv = (unsigned long)wl;
3071 wl->rng_initialized = 1;
3072 err = hwrng_register(&wl->rng);
3073 if (err) {
3074 wl->rng_initialized = 0;
3075 b43err(wl, "Failed to register the random "
3076 "number generator (%d)\n", err);
3077 }
3078 #endif /* CONFIG_B43_HWRNG */
3079
3080 return err;
3081 }
3082
3083 static int b43_op_tx(struct ieee80211_hw *hw,
3084 struct sk_buff *skb)
3085 {
3086 struct b43_wl *wl = hw_to_b43_wl(hw);
3087 struct b43_wldev *dev = wl->current_dev;
3088 unsigned long flags;
3089 int err;
3090
3091 if (unlikely(skb->len < 2 + 2 + 6)) {
3092 /* Too short, this can't be a valid frame. */
3093 goto drop_packet;
3094 }
3095 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3096 if (unlikely(!dev))
3097 goto drop_packet;
3098
3099 /* Transmissions on seperate queues can run concurrently. */
3100 read_lock_irqsave(&wl->tx_lock, flags);
3101
3102 err = -ENODEV;
3103 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3104 if (b43_using_pio_transfers(dev))
3105 err = b43_pio_tx(dev, skb);
3106 else
3107 err = b43_dma_tx(dev, skb);
3108 }
3109
3110 read_unlock_irqrestore(&wl->tx_lock, flags);
3111
3112 if (unlikely(err))
3113 goto drop_packet;
3114 return NETDEV_TX_OK;
3115
3116 drop_packet:
3117 /* We can not transmit this packet. Drop it. */
3118 dev_kfree_skb_any(skb);
3119 return NETDEV_TX_OK;
3120 }
3121
3122 /* Locking: wl->irq_lock */
3123 static void b43_qos_params_upload(struct b43_wldev *dev,
3124 const struct ieee80211_tx_queue_params *p,
3125 u16 shm_offset)
3126 {
3127 u16 params[B43_NR_QOSPARAMS];
3128 int bslots, tmp;
3129 unsigned int i;
3130
3131 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3132
3133 memset(&params, 0, sizeof(params));
3134
3135 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3136 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3137 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3138 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3139 params[B43_QOSPARAM_AIFS] = p->aifs;
3140 params[B43_QOSPARAM_BSLOTS] = bslots;
3141 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3142
3143 for (i = 0; i < ARRAY_SIZE(params); i++) {
3144 if (i == B43_QOSPARAM_STATUS) {
3145 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3146 shm_offset + (i * 2));
3147 /* Mark the parameters as updated. */
3148 tmp |= 0x100;
3149 b43_shm_write16(dev, B43_SHM_SHARED,
3150 shm_offset + (i * 2),
3151 tmp);
3152 } else {
3153 b43_shm_write16(dev, B43_SHM_SHARED,
3154 shm_offset + (i * 2),
3155 params[i]);
3156 }
3157 }
3158 }
3159
3160 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3161 static const u16 b43_qos_shm_offsets[] = {
3162 /* [mac80211-queue-nr] = SHM_OFFSET, */
3163 [0] = B43_QOS_VOICE,
3164 [1] = B43_QOS_VIDEO,
3165 [2] = B43_QOS_BESTEFFORT,
3166 [3] = B43_QOS_BACKGROUND,
3167 };
3168
3169 /* Update all QOS parameters in hardware. */
3170 static void b43_qos_upload_all(struct b43_wldev *dev)
3171 {
3172 struct b43_wl *wl = dev->wl;
3173 struct b43_qos_params *params;
3174 unsigned int i;
3175
3176 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3177 ARRAY_SIZE(wl->qos_params));
3178
3179 b43_mac_suspend(dev);
3180 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3181 params = &(wl->qos_params[i]);
3182 b43_qos_params_upload(dev, &(params->p),
3183 b43_qos_shm_offsets[i]);
3184 }
3185 b43_mac_enable(dev);
3186 }
3187
3188 static void b43_qos_clear(struct b43_wl *wl)
3189 {
3190 struct b43_qos_params *params;
3191 unsigned int i;
3192
3193 /* Initialize QoS parameters to sane defaults. */
3194
3195 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3196 ARRAY_SIZE(wl->qos_params));
3197
3198 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3199 params = &(wl->qos_params[i]);
3200
3201 switch (b43_qos_shm_offsets[i]) {
3202 case B43_QOS_VOICE:
3203 params->p.txop = 0;
3204 params->p.aifs = 2;
3205 params->p.cw_min = 0x0001;
3206 params->p.cw_max = 0x0001;
3207 break;
3208 case B43_QOS_VIDEO:
3209 params->p.txop = 0;
3210 params->p.aifs = 2;
3211 params->p.cw_min = 0x0001;
3212 params->p.cw_max = 0x0001;
3213 break;
3214 case B43_QOS_BESTEFFORT:
3215 params->p.txop = 0;
3216 params->p.aifs = 3;
3217 params->p.cw_min = 0x0001;
3218 params->p.cw_max = 0x03FF;
3219 break;
3220 case B43_QOS_BACKGROUND:
3221 params->p.txop = 0;
3222 params->p.aifs = 7;
3223 params->p.cw_min = 0x0001;
3224 params->p.cw_max = 0x03FF;
3225 break;
3226 default:
3227 B43_WARN_ON(1);
3228 }
3229 }
3230 }
3231
3232 /* Initialize the core's QOS capabilities */
3233 static void b43_qos_init(struct b43_wldev *dev)
3234 {
3235 /* Upload the current QOS parameters. */
3236 b43_qos_upload_all(dev);
3237
3238 /* Enable QOS support. */
3239 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3240 b43_write16(dev, B43_MMIO_IFSCTL,
3241 b43_read16(dev, B43_MMIO_IFSCTL)
3242 | B43_MMIO_IFSCTL_USE_EDCF);
3243 }
3244
3245 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3246 const struct ieee80211_tx_queue_params *params)
3247 {
3248 struct b43_wl *wl = hw_to_b43_wl(hw);
3249 struct b43_wldev *dev;
3250 unsigned int queue = (unsigned int)_queue;
3251 int err = -ENODEV;
3252
3253 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3254 /* Queue not available or don't support setting
3255 * params on this queue. Return success to not
3256 * confuse mac80211. */
3257 return 0;
3258 }
3259 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3260 ARRAY_SIZE(wl->qos_params));
3261
3262 mutex_lock(&wl->mutex);
3263 dev = wl->current_dev;
3264 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3265 goto out_unlock;
3266
3267 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3268 b43_mac_suspend(dev);
3269 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3270 b43_qos_shm_offsets[queue]);
3271 b43_mac_enable(dev);
3272 err = 0;
3273
3274 out_unlock:
3275 mutex_unlock(&wl->mutex);
3276
3277 return err;
3278 }
3279
3280 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3281 struct ieee80211_tx_queue_stats *stats)
3282 {
3283 struct b43_wl *wl = hw_to_b43_wl(hw);
3284 struct b43_wldev *dev = wl->current_dev;
3285 unsigned long flags;
3286 int err = -ENODEV;
3287
3288 if (!dev)
3289 goto out;
3290 spin_lock_irqsave(&wl->irq_lock, flags);
3291 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3292 if (b43_using_pio_transfers(dev))
3293 b43_pio_get_tx_stats(dev, stats);
3294 else
3295 b43_dma_get_tx_stats(dev, stats);
3296 err = 0;
3297 }
3298 spin_unlock_irqrestore(&wl->irq_lock, flags);
3299 out:
3300 return err;
3301 }
3302
3303 static int b43_op_get_stats(struct ieee80211_hw *hw,
3304 struct ieee80211_low_level_stats *stats)
3305 {
3306 struct b43_wl *wl = hw_to_b43_wl(hw);
3307 unsigned long flags;
3308
3309 spin_lock_irqsave(&wl->irq_lock, flags);
3310 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3311 spin_unlock_irqrestore(&wl->irq_lock, flags);
3312
3313 return 0;
3314 }
3315
3316 static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
3317 {
3318 struct b43_wl *wl = hw_to_b43_wl(hw);
3319 struct b43_wldev *dev;
3320 u64 tsf;
3321
3322 mutex_lock(&wl->mutex);
3323 spin_lock_irq(&wl->irq_lock);
3324 dev = wl->current_dev;
3325
3326 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3327 b43_tsf_read(dev, &tsf);
3328 else
3329 tsf = 0;
3330
3331 spin_unlock_irq(&wl->irq_lock);
3332 mutex_unlock(&wl->mutex);
3333
3334 return tsf;
3335 }
3336
3337 static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3338 {
3339 struct b43_wl *wl = hw_to_b43_wl(hw);
3340 struct b43_wldev *dev;
3341
3342 mutex_lock(&wl->mutex);
3343 spin_lock_irq(&wl->irq_lock);
3344 dev = wl->current_dev;
3345
3346 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3347 b43_tsf_write(dev, tsf);
3348
3349 spin_unlock_irq(&wl->irq_lock);
3350 mutex_unlock(&wl->mutex);
3351 }
3352
3353 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3354 {
3355 struct ssb_device *sdev = dev->dev;
3356 u32 tmslow;
3357
3358 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3359 tmslow &= ~B43_TMSLOW_GMODE;
3360 tmslow |= B43_TMSLOW_PHYRESET;
3361 tmslow |= SSB_TMSLOW_FGC;
3362 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3363 msleep(1);
3364
3365 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3366 tmslow &= ~SSB_TMSLOW_FGC;
3367 tmslow |= B43_TMSLOW_PHYRESET;
3368 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3369 msleep(1);
3370 }
3371
3372 static const char *band_to_string(enum ieee80211_band band)
3373 {
3374 switch (band) {
3375 case IEEE80211_BAND_5GHZ:
3376 return "5";
3377 case IEEE80211_BAND_2GHZ:
3378 return "2.4";
3379 default:
3380 break;
3381 }
3382 B43_WARN_ON(1);
3383 return "";
3384 }
3385
3386 /* Expects wl->mutex locked */
3387 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3388 {
3389 struct b43_wldev *up_dev = NULL;
3390 struct b43_wldev *down_dev;
3391 struct b43_wldev *d;
3392 int err;
3393 bool uninitialized_var(gmode);
3394 int prev_status;
3395
3396 /* Find a device and PHY which supports the band. */
3397 list_for_each_entry(d, &wl->devlist, list) {
3398 switch (chan->band) {
3399 case IEEE80211_BAND_5GHZ:
3400 if (d->phy.supports_5ghz) {
3401 up_dev = d;
3402 gmode = 0;
3403 }
3404 break;
3405 case IEEE80211_BAND_2GHZ:
3406 if (d->phy.supports_2ghz) {
3407 up_dev = d;
3408 gmode = 1;
3409 }
3410 break;
3411 default:
3412 B43_WARN_ON(1);
3413 return -EINVAL;
3414 }
3415 if (up_dev)
3416 break;
3417 }
3418 if (!up_dev) {
3419 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3420 band_to_string(chan->band));
3421 return -ENODEV;
3422 }
3423 if ((up_dev == wl->current_dev) &&
3424 (!!wl->current_dev->phy.gmode == !!gmode)) {
3425 /* This device is already running. */
3426 return 0;
3427 }
3428 b43dbg(wl, "Switching to %s-GHz band\n",
3429 band_to_string(chan->band));
3430 down_dev = wl->current_dev;
3431
3432 prev_status = b43_status(down_dev);
3433 /* Shutdown the currently running core. */
3434 if (prev_status >= B43_STAT_STARTED)
3435 b43_wireless_core_stop(down_dev);
3436 if (prev_status >= B43_STAT_INITIALIZED)
3437 b43_wireless_core_exit(down_dev);
3438
3439 if (down_dev != up_dev) {
3440 /* We switch to a different core, so we put PHY into
3441 * RESET on the old core. */
3442 b43_put_phy_into_reset(down_dev);
3443 }
3444
3445 /* Now start the new core. */
3446 up_dev->phy.gmode = gmode;
3447 if (prev_status >= B43_STAT_INITIALIZED) {
3448 err = b43_wireless_core_init(up_dev);
3449 if (err) {
3450 b43err(wl, "Fatal: Could not initialize device for "
3451 "selected %s-GHz band\n",
3452 band_to_string(chan->band));
3453 goto init_failure;
3454 }
3455 }
3456 if (prev_status >= B43_STAT_STARTED) {
3457 err = b43_wireless_core_start(up_dev);
3458 if (err) {
3459 b43err(wl, "Fatal: Coult not start device for "
3460 "selected %s-GHz band\n",
3461 band_to_string(chan->band));
3462 b43_wireless_core_exit(up_dev);
3463 goto init_failure;
3464 }
3465 }
3466 B43_WARN_ON(b43_status(up_dev) != prev_status);
3467
3468 wl->current_dev = up_dev;
3469
3470 return 0;
3471 init_failure:
3472 /* Whoops, failed to init the new core. No core is operating now. */
3473 wl->current_dev = NULL;
3474 return err;
3475 }
3476
3477 /* Write the short and long frame retry limit values. */
3478 static void b43_set_retry_limits(struct b43_wldev *dev,
3479 unsigned int short_retry,
3480 unsigned int long_retry)
3481 {
3482 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3483 * the chip-internal counter. */
3484 short_retry = min(short_retry, (unsigned int)0xF);
3485 long_retry = min(long_retry, (unsigned int)0xF);
3486
3487 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3488 short_retry);
3489 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3490 long_retry);
3491 }
3492
3493 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3494 {
3495 struct b43_wl *wl = hw_to_b43_wl(hw);
3496 struct b43_wldev *dev;
3497 struct b43_phy *phy;
3498 struct ieee80211_conf *conf = &hw->conf;
3499 unsigned long flags;
3500 int antenna;
3501 int err = 0;
3502
3503 mutex_lock(&wl->mutex);
3504
3505 /* Switch the band (if necessary). This might change the active core. */
3506 err = b43_switch_band(wl, conf->channel);
3507 if (err)
3508 goto out_unlock_mutex;
3509 dev = wl->current_dev;
3510 phy = &dev->phy;
3511
3512 b43_mac_suspend(dev);
3513
3514 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3515 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3516 conf->long_frame_max_tx_count);
3517 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3518 if (!changed)
3519 goto out_mac_enable;
3520
3521 /* Switch to the requested channel.
3522 * The firmware takes care of races with the TX handler. */
3523 if (conf->channel->hw_value != phy->channel)
3524 b43_switch_channel(dev, conf->channel->hw_value);
3525
3526 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3527
3528 /* Adjust the desired TX power level. */
3529 if (conf->power_level != 0) {
3530 spin_lock_irqsave(&wl->irq_lock, flags);
3531 if (conf->power_level != phy->desired_txpower) {
3532 phy->desired_txpower = conf->power_level;
3533 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3534 B43_TXPWR_IGNORE_TSSI);
3535 }
3536 spin_unlock_irqrestore(&wl->irq_lock, flags);
3537 }
3538
3539 /* Antennas for RX and management frame TX. */
3540 antenna = B43_ANTENNA_DEFAULT;
3541 b43_mgmtframe_txantenna(dev, antenna);
3542 antenna = B43_ANTENNA_DEFAULT;
3543 if (phy->ops->set_rx_antenna)
3544 phy->ops->set_rx_antenna(dev, antenna);
3545
3546 if (wl->radio_enabled != phy->radio_on) {
3547 if (wl->radio_enabled) {
3548 b43_software_rfkill(dev, false);
3549 b43info(dev->wl, "Radio turned on by software\n");
3550 if (!dev->radio_hw_enable) {
3551 b43info(dev->wl, "The hardware RF-kill button "
3552 "still turns the radio physically off. "
3553 "Press the button to turn it on.\n");
3554 }
3555 } else {
3556 b43_software_rfkill(dev, true);
3557 b43info(dev->wl, "Radio turned off by software\n");
3558 }
3559 }
3560
3561 out_mac_enable:
3562 b43_mac_enable(dev);
3563 out_unlock_mutex:
3564 mutex_unlock(&wl->mutex);
3565
3566 return err;
3567 }
3568
3569 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3570 {
3571 struct ieee80211_supported_band *sband =
3572 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3573 struct ieee80211_rate *rate;
3574 int i;
3575 u16 basic, direct, offset, basic_offset, rateptr;
3576
3577 for (i = 0; i < sband->n_bitrates; i++) {
3578 rate = &sband->bitrates[i];
3579
3580 if (b43_is_cck_rate(rate->hw_value)) {
3581 direct = B43_SHM_SH_CCKDIRECT;
3582 basic = B43_SHM_SH_CCKBASIC;
3583 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3584 offset &= 0xF;
3585 } else {
3586 direct = B43_SHM_SH_OFDMDIRECT;
3587 basic = B43_SHM_SH_OFDMBASIC;
3588 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3589 offset &= 0xF;
3590 }
3591
3592 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3593
3594 if (b43_is_cck_rate(rate->hw_value)) {
3595 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3596 basic_offset &= 0xF;
3597 } else {
3598 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3599 basic_offset &= 0xF;
3600 }
3601
3602 /*
3603 * Get the pointer that we need to point to
3604 * from the direct map
3605 */
3606 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3607 direct + 2 * basic_offset);
3608 /* and write it to the basic map */
3609 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3610 rateptr);
3611 }
3612 }
3613
3614 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3615 struct ieee80211_vif *vif,
3616 struct ieee80211_bss_conf *conf,
3617 u32 changed)
3618 {
3619 struct b43_wl *wl = hw_to_b43_wl(hw);
3620 struct b43_wldev *dev;
3621 unsigned long flags;
3622
3623 mutex_lock(&wl->mutex);
3624
3625 dev = wl->current_dev;
3626 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3627 goto out_unlock_mutex;
3628
3629 B43_WARN_ON(wl->vif != vif);
3630
3631 spin_lock_irqsave(&wl->irq_lock, flags);
3632 if (changed & BSS_CHANGED_BSSID) {
3633 if (conf->bssid)
3634 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3635 else
3636 memset(wl->bssid, 0, ETH_ALEN);
3637 }
3638
3639 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3640 if (changed & BSS_CHANGED_BEACON &&
3641 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3642 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3643 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3644 b43_update_templates(wl);
3645
3646 if (changed & BSS_CHANGED_BSSID)
3647 b43_write_mac_bssid_templates(dev);
3648 }
3649 spin_unlock_irqrestore(&wl->irq_lock, flags);
3650
3651 b43_mac_suspend(dev);
3652
3653 /* Update templates for AP/mesh mode. */
3654 if (changed & BSS_CHANGED_BEACON_INT &&
3655 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3656 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3657 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3658 b43_set_beacon_int(dev, conf->beacon_int);
3659
3660 if (changed & BSS_CHANGED_BASIC_RATES)
3661 b43_update_basic_rates(dev, conf->basic_rates);
3662
3663 if (changed & BSS_CHANGED_ERP_SLOT) {
3664 if (conf->use_short_slot)
3665 b43_short_slot_timing_enable(dev);
3666 else
3667 b43_short_slot_timing_disable(dev);
3668 }
3669
3670 b43_mac_enable(dev);
3671 out_unlock_mutex:
3672 mutex_unlock(&wl->mutex);
3673 }
3674
3675 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3676 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3677 struct ieee80211_key_conf *key)
3678 {
3679 struct b43_wl *wl = hw_to_b43_wl(hw);
3680 struct b43_wldev *dev;
3681 u8 algorithm;
3682 u8 index;
3683 int err;
3684 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
3685
3686 if (modparam_nohwcrypt)
3687 return -ENOSPC; /* User disabled HW-crypto */
3688
3689 mutex_lock(&wl->mutex);
3690 spin_lock_irq(&wl->irq_lock);
3691 write_lock(&wl->tx_lock);
3692 /* Why do we need all this locking here?
3693 * mutex -> Every config operation must take it.
3694 * irq_lock -> We modify the dev->key array, which is accessed
3695 * in the IRQ handlers.
3696 * tx_lock -> We modify the dev->key array, which is accessed
3697 * in the TX handler.
3698 */
3699
3700 dev = wl->current_dev;
3701 err = -ENODEV;
3702 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3703 goto out_unlock;
3704
3705 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
3706 /* We don't have firmware for the crypto engine.
3707 * Must use software-crypto. */
3708 err = -EOPNOTSUPP;
3709 goto out_unlock;
3710 }
3711
3712 err = -EINVAL;
3713 switch (key->alg) {
3714 case ALG_WEP:
3715 if (key->keylen == WLAN_KEY_LEN_WEP40)
3716 algorithm = B43_SEC_ALGO_WEP40;
3717 else
3718 algorithm = B43_SEC_ALGO_WEP104;
3719 break;
3720 case ALG_TKIP:
3721 algorithm = B43_SEC_ALGO_TKIP;
3722 break;
3723 case ALG_CCMP:
3724 algorithm = B43_SEC_ALGO_AES;
3725 break;
3726 default:
3727 B43_WARN_ON(1);
3728 goto out_unlock;
3729 }
3730 index = (u8) (key->keyidx);
3731 if (index > 3)
3732 goto out_unlock;
3733
3734 switch (cmd) {
3735 case SET_KEY:
3736 if (algorithm == B43_SEC_ALGO_TKIP &&
3737 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3738 !modparam_hwtkip)) {
3739 /* We support only pairwise key */
3740 err = -EOPNOTSUPP;
3741 goto out_unlock;
3742 }
3743
3744 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3745 if (WARN_ON(!sta)) {
3746 err = -EOPNOTSUPP;
3747 goto out_unlock;
3748 }
3749 /* Pairwise key with an assigned MAC address. */
3750 err = b43_key_write(dev, -1, algorithm,
3751 key->key, key->keylen,
3752 sta->addr, key);
3753 } else {
3754 /* Group key */
3755 err = b43_key_write(dev, index, algorithm,
3756 key->key, key->keylen, NULL, key);
3757 }
3758 if (err)
3759 goto out_unlock;
3760
3761 if (algorithm == B43_SEC_ALGO_WEP40 ||
3762 algorithm == B43_SEC_ALGO_WEP104) {
3763 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3764 } else {
3765 b43_hf_write(dev,
3766 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3767 }
3768 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3769 if (algorithm == B43_SEC_ALGO_TKIP)
3770 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3771 break;
3772 case DISABLE_KEY: {
3773 err = b43_key_clear(dev, key->hw_key_idx);
3774 if (err)
3775 goto out_unlock;
3776 break;
3777 }
3778 default:
3779 B43_WARN_ON(1);
3780 }
3781
3782 out_unlock:
3783 if (!err) {
3784 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3785 "mac: %pM\n",
3786 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3787 sta ? sta->addr : bcast_addr);
3788 b43_dump_keymemory(dev);
3789 }
3790 write_unlock(&wl->tx_lock);
3791 spin_unlock_irq(&wl->irq_lock);
3792 mutex_unlock(&wl->mutex);
3793
3794 return err;
3795 }
3796
3797 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3798 unsigned int changed, unsigned int *fflags,
3799 u64 multicast)
3800 {
3801 struct b43_wl *wl = hw_to_b43_wl(hw);
3802 struct b43_wldev *dev = wl->current_dev;
3803 unsigned long flags;
3804
3805 if (!dev) {
3806 *fflags = 0;
3807 return;
3808 }
3809
3810 spin_lock_irqsave(&wl->irq_lock, flags);
3811 *fflags &= FIF_PROMISC_IN_BSS |
3812 FIF_ALLMULTI |
3813 FIF_FCSFAIL |
3814 FIF_PLCPFAIL |
3815 FIF_CONTROL |
3816 FIF_OTHER_BSS |
3817 FIF_BCN_PRBRESP_PROMISC;
3818
3819 changed &= FIF_PROMISC_IN_BSS |
3820 FIF_ALLMULTI |
3821 FIF_FCSFAIL |
3822 FIF_PLCPFAIL |
3823 FIF_CONTROL |
3824 FIF_OTHER_BSS |
3825 FIF_BCN_PRBRESP_PROMISC;
3826
3827 wl->filter_flags = *fflags;
3828
3829 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3830 b43_adjust_opmode(dev);
3831 spin_unlock_irqrestore(&wl->irq_lock, flags);
3832 }
3833
3834 /* Locking: wl->mutex */
3835 static void b43_wireless_core_stop(struct b43_wldev *dev)
3836 {
3837 struct b43_wl *wl = dev->wl;
3838 unsigned long flags;
3839
3840 if (b43_status(dev) < B43_STAT_STARTED)
3841 return;
3842
3843 /* Disable and sync interrupts. We must do this before than
3844 * setting the status to INITIALIZED, as the interrupt handler
3845 * won't care about IRQs then. */
3846 spin_lock_irqsave(&wl->irq_lock, flags);
3847 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3848 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3849 spin_unlock_irqrestore(&wl->irq_lock, flags);
3850 b43_synchronize_irq(dev);
3851
3852 write_lock_irqsave(&wl->tx_lock, flags);
3853 b43_set_status(dev, B43_STAT_INITIALIZED);
3854 write_unlock_irqrestore(&wl->tx_lock, flags);
3855
3856 b43_pio_stop(dev);
3857 mutex_unlock(&wl->mutex);
3858 /* Must unlock as it would otherwise deadlock. No races here.
3859 * Cancel the possibly running self-rearming periodic work. */
3860 cancel_delayed_work_sync(&dev->periodic_work);
3861 mutex_lock(&wl->mutex);
3862
3863 b43_mac_suspend(dev);
3864 free_irq(dev->dev->irq, dev);
3865 b43dbg(wl, "Wireless interface stopped\n");
3866 }
3867
3868 /* Locking: wl->mutex */
3869 static int b43_wireless_core_start(struct b43_wldev *dev)
3870 {
3871 int err;
3872
3873 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3874
3875 drain_txstatus_queue(dev);
3876 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3877 IRQF_SHARED, KBUILD_MODNAME, dev);
3878 if (err) {
3879 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3880 goto out;
3881 }
3882
3883 /* We are ready to run. */
3884 b43_set_status(dev, B43_STAT_STARTED);
3885
3886 /* Start data flow (TX/RX). */
3887 b43_mac_enable(dev);
3888 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3889
3890 /* Start maintainance work */
3891 b43_periodic_tasks_setup(dev);
3892
3893 b43dbg(dev->wl, "Wireless interface started\n");
3894 out:
3895 return err;
3896 }
3897
3898 /* Get PHY and RADIO versioning numbers */
3899 static int b43_phy_versioning(struct b43_wldev *dev)
3900 {
3901 struct b43_phy *phy = &dev->phy;
3902 u32 tmp;
3903 u8 analog_type;
3904 u8 phy_type;
3905 u8 phy_rev;
3906 u16 radio_manuf;
3907 u16 radio_ver;
3908 u16 radio_rev;
3909 int unsupported = 0;
3910
3911 /* Get PHY versioning */
3912 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3913 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3914 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3915 phy_rev = (tmp & B43_PHYVER_VERSION);
3916 switch (phy_type) {
3917 case B43_PHYTYPE_A:
3918 if (phy_rev >= 4)
3919 unsupported = 1;
3920 break;
3921 case B43_PHYTYPE_B:
3922 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3923 && phy_rev != 7)
3924 unsupported = 1;
3925 break;
3926 case B43_PHYTYPE_G:
3927 if (phy_rev > 9)
3928 unsupported = 1;
3929 break;
3930 #ifdef CONFIG_B43_NPHY
3931 case B43_PHYTYPE_N:
3932 if (phy_rev > 4)
3933 unsupported = 1;
3934 break;
3935 #endif
3936 #ifdef CONFIG_B43_PHY_LP
3937 case B43_PHYTYPE_LP:
3938 if (phy_rev > 2)
3939 unsupported = 1;
3940 break;
3941 #endif
3942 default:
3943 unsupported = 1;
3944 };
3945 if (unsupported) {
3946 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3947 "(Analog %u, Type %u, Revision %u)\n",
3948 analog_type, phy_type, phy_rev);
3949 return -EOPNOTSUPP;
3950 }
3951 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3952 analog_type, phy_type, phy_rev);
3953
3954 /* Get RADIO versioning */
3955 if (dev->dev->bus->chip_id == 0x4317) {
3956 if (dev->dev->bus->chip_rev == 0)
3957 tmp = 0x3205017F;
3958 else if (dev->dev->bus->chip_rev == 1)
3959 tmp = 0x4205017F;
3960 else
3961 tmp = 0x5205017F;
3962 } else {
3963 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3964 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3965 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3966 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3967 }
3968 radio_manuf = (tmp & 0x00000FFF);
3969 radio_ver = (tmp & 0x0FFFF000) >> 12;
3970 radio_rev = (tmp & 0xF0000000) >> 28;
3971 if (radio_manuf != 0x17F /* Broadcom */)
3972 unsupported = 1;
3973 switch (phy_type) {
3974 case B43_PHYTYPE_A:
3975 if (radio_ver != 0x2060)
3976 unsupported = 1;
3977 if (radio_rev != 1)
3978 unsupported = 1;
3979 if (radio_manuf != 0x17F)
3980 unsupported = 1;
3981 break;
3982 case B43_PHYTYPE_B:
3983 if ((radio_ver & 0xFFF0) != 0x2050)
3984 unsupported = 1;
3985 break;
3986 case B43_PHYTYPE_G:
3987 if (radio_ver != 0x2050)
3988 unsupported = 1;
3989 break;
3990 case B43_PHYTYPE_N:
3991 if (radio_ver != 0x2055 && radio_ver != 0x2056)
3992 unsupported = 1;
3993 break;
3994 case B43_PHYTYPE_LP:
3995 if (radio_ver != 0x2062 && radio_ver != 0x2063)
3996 unsupported = 1;
3997 break;
3998 default:
3999 B43_WARN_ON(1);
4000 }
4001 if (unsupported) {
4002 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
4003 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
4004 radio_manuf, radio_ver, radio_rev);
4005 return -EOPNOTSUPP;
4006 }
4007 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
4008 radio_manuf, radio_ver, radio_rev);
4009
4010 phy->radio_manuf = radio_manuf;
4011 phy->radio_ver = radio_ver;
4012 phy->radio_rev = radio_rev;
4013
4014 phy->analog = analog_type;
4015 phy->type = phy_type;
4016 phy->rev = phy_rev;
4017
4018 return 0;
4019 }
4020
4021 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4022 struct b43_phy *phy)
4023 {
4024 phy->hardware_power_control = !!modparam_hwpctl;
4025 phy->next_txpwr_check_time = jiffies;
4026 /* PHY TX errors counter. */
4027 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4028
4029 #if B43_DEBUG
4030 phy->phy_locked = 0;
4031 phy->radio_locked = 0;
4032 #endif
4033 }
4034
4035 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4036 {
4037 dev->dfq_valid = 0;
4038
4039 /* Assume the radio is enabled. If it's not enabled, the state will
4040 * immediately get fixed on the first periodic work run. */
4041 dev->radio_hw_enable = 1;
4042
4043 /* Stats */
4044 memset(&dev->stats, 0, sizeof(dev->stats));
4045
4046 setup_struct_phy_for_init(dev, &dev->phy);
4047
4048 /* IRQ related flags */
4049 dev->irq_reason = 0;
4050 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4051 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4052 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4053 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4054
4055 dev->mac_suspended = 1;
4056
4057 /* Noise calculation context */
4058 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4059 }
4060
4061 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4062 {
4063 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
4064 u64 hf;
4065
4066 if (!modparam_btcoex)
4067 return;
4068 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4069 return;
4070 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4071 return;
4072
4073 hf = b43_hf_read(dev);
4074 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4075 hf |= B43_HF_BTCOEXALT;
4076 else
4077 hf |= B43_HF_BTCOEX;
4078 b43_hf_write(dev, hf);
4079 }
4080
4081 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4082 {
4083 if (!modparam_btcoex)
4084 return;
4085 //TODO
4086 }
4087
4088 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4089 {
4090 #ifdef CONFIG_SSB_DRIVER_PCICORE
4091 struct ssb_bus *bus = dev->dev->bus;
4092 u32 tmp;
4093
4094 if (bus->pcicore.dev &&
4095 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
4096 bus->pcicore.dev->id.revision <= 5) {
4097 /* IMCFGLO timeouts workaround. */
4098 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
4099 tmp &= ~SSB_IMCFGLO_REQTO;
4100 tmp &= ~SSB_IMCFGLO_SERTO;
4101 switch (bus->bustype) {
4102 case SSB_BUSTYPE_PCI:
4103 case SSB_BUSTYPE_PCMCIA:
4104 tmp |= 0x32;
4105 break;
4106 case SSB_BUSTYPE_SSB:
4107 tmp |= 0x53;
4108 break;
4109 }
4110 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
4111 }
4112 #endif /* CONFIG_SSB_DRIVER_PCICORE */
4113 }
4114
4115 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4116 {
4117 u16 pu_delay;
4118
4119 /* The time value is in microseconds. */
4120 if (dev->phy.type == B43_PHYTYPE_A)
4121 pu_delay = 3700;
4122 else
4123 pu_delay = 1050;
4124 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4125 pu_delay = 500;
4126 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4127 pu_delay = max(pu_delay, (u16)2400);
4128
4129 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4130 }
4131
4132 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4133 static void b43_set_pretbtt(struct b43_wldev *dev)
4134 {
4135 u16 pretbtt;
4136
4137 /* The time value is in microseconds. */
4138 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4139 pretbtt = 2;
4140 } else {
4141 if (dev->phy.type == B43_PHYTYPE_A)
4142 pretbtt = 120;
4143 else
4144 pretbtt = 250;
4145 }
4146 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4147 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4148 }
4149
4150 /* Shutdown a wireless core */
4151 /* Locking: wl->mutex */
4152 static void b43_wireless_core_exit(struct b43_wldev *dev)
4153 {
4154 u32 macctl;
4155
4156 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
4157 if (b43_status(dev) != B43_STAT_INITIALIZED)
4158 return;
4159 b43_set_status(dev, B43_STAT_UNINIT);
4160
4161 /* Stop the microcode PSM. */
4162 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4163 macctl &= ~B43_MACCTL_PSM_RUN;
4164 macctl |= B43_MACCTL_PSM_JMP0;
4165 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4166
4167 if (!dev->suspend_in_progress) {
4168 b43_leds_exit(dev);
4169 b43_rng_exit(dev->wl);
4170 }
4171 b43_dma_free(dev);
4172 b43_pio_free(dev);
4173 b43_chip_exit(dev);
4174 dev->phy.ops->switch_analog(dev, 0);
4175 if (dev->wl->current_beacon) {
4176 dev_kfree_skb_any(dev->wl->current_beacon);
4177 dev->wl->current_beacon = NULL;
4178 }
4179
4180 ssb_device_disable(dev->dev, 0);
4181 ssb_bus_may_powerdown(dev->dev->bus);
4182 }
4183
4184 /* Initialize a wireless core */
4185 static int b43_wireless_core_init(struct b43_wldev *dev)
4186 {
4187 struct b43_wl *wl = dev->wl;
4188 struct ssb_bus *bus = dev->dev->bus;
4189 struct ssb_sprom *sprom = &bus->sprom;
4190 struct b43_phy *phy = &dev->phy;
4191 int err;
4192 u64 hf;
4193 u32 tmp;
4194
4195 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4196
4197 err = ssb_bus_powerup(bus, 0);
4198 if (err)
4199 goto out;
4200 if (!ssb_device_is_enabled(dev->dev)) {
4201 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4202 b43_wireless_core_reset(dev, tmp);
4203 }
4204
4205 /* Reset all data structures. */
4206 setup_struct_wldev_for_init(dev);
4207 phy->ops->prepare_structs(dev);
4208
4209 /* Enable IRQ routing to this device. */
4210 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4211
4212 b43_imcfglo_timeouts_workaround(dev);
4213 b43_bluetooth_coext_disable(dev);
4214 if (phy->ops->prepare_hardware) {
4215 err = phy->ops->prepare_hardware(dev);
4216 if (err)
4217 goto err_busdown;
4218 }
4219 err = b43_chip_init(dev);
4220 if (err)
4221 goto err_busdown;
4222 b43_shm_write16(dev, B43_SHM_SHARED,
4223 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4224 hf = b43_hf_read(dev);
4225 if (phy->type == B43_PHYTYPE_G) {
4226 hf |= B43_HF_SYMW;
4227 if (phy->rev == 1)
4228 hf |= B43_HF_GDCW;
4229 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4230 hf |= B43_HF_OFDMPABOOST;
4231 }
4232 if (phy->radio_ver == 0x2050) {
4233 if (phy->radio_rev == 6)
4234 hf |= B43_HF_4318TSSI;
4235 if (phy->radio_rev < 6)
4236 hf |= B43_HF_VCORECALC;
4237 }
4238 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4239 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4240 #ifdef CONFIG_SSB_DRIVER_PCICORE
4241 if ((bus->bustype == SSB_BUSTYPE_PCI) &&
4242 (bus->pcicore.dev->id.revision <= 10))
4243 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4244 #endif
4245 hf &= ~B43_HF_SKCFPUP;
4246 b43_hf_write(dev, hf);
4247
4248 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4249 B43_DEFAULT_LONG_RETRY_LIMIT);
4250 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4251 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4252
4253 /* Disable sending probe responses from firmware.
4254 * Setting the MaxTime to one usec will always trigger
4255 * a timeout, so we never send any probe resp.
4256 * A timeout of zero is infinite. */
4257 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4258
4259 b43_rate_memory_init(dev);
4260 b43_set_phytxctl_defaults(dev);
4261
4262 /* Minimum Contention Window */
4263 if (phy->type == B43_PHYTYPE_B) {
4264 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4265 } else {
4266 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4267 }
4268 /* Maximum Contention Window */
4269 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4270
4271 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4272 dev->__using_pio_transfers = 1;
4273 err = b43_pio_init(dev);
4274 } else {
4275 dev->__using_pio_transfers = 0;
4276 err = b43_dma_init(dev);
4277 }
4278 if (err)
4279 goto err_chip_exit;
4280 b43_qos_init(dev);
4281 b43_set_synth_pu_delay(dev, 1);
4282 b43_bluetooth_coext_enable(dev);
4283
4284 ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4285 b43_upload_card_macaddress(dev);
4286 b43_security_init(dev);
4287 if (!dev->suspend_in_progress)
4288 b43_rng_init(wl);
4289
4290 b43_set_status(dev, B43_STAT_INITIALIZED);
4291
4292 if (!dev->suspend_in_progress)
4293 b43_leds_init(dev);
4294 out:
4295 return err;
4296
4297 err_chip_exit:
4298 b43_chip_exit(dev);
4299 err_busdown:
4300 ssb_bus_may_powerdown(bus);
4301 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4302 return err;
4303 }
4304
4305 static int b43_op_add_interface(struct ieee80211_hw *hw,
4306 struct ieee80211_if_init_conf *conf)
4307 {
4308 struct b43_wl *wl = hw_to_b43_wl(hw);
4309 struct b43_wldev *dev;
4310 unsigned long flags;
4311 int err = -EOPNOTSUPP;
4312
4313 /* TODO: allow WDS/AP devices to coexist */
4314
4315 if (conf->type != NL80211_IFTYPE_AP &&
4316 conf->type != NL80211_IFTYPE_MESH_POINT &&
4317 conf->type != NL80211_IFTYPE_STATION &&
4318 conf->type != NL80211_IFTYPE_WDS &&
4319 conf->type != NL80211_IFTYPE_ADHOC)
4320 return -EOPNOTSUPP;
4321
4322 mutex_lock(&wl->mutex);
4323 if (wl->operating)
4324 goto out_mutex_unlock;
4325
4326 b43dbg(wl, "Adding Interface type %d\n", conf->type);
4327
4328 dev = wl->current_dev;
4329 wl->operating = 1;
4330 wl->vif = conf->vif;
4331 wl->if_type = conf->type;
4332 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4333
4334 spin_lock_irqsave(&wl->irq_lock, flags);
4335 b43_adjust_opmode(dev);
4336 b43_set_pretbtt(dev);
4337 b43_set_synth_pu_delay(dev, 0);
4338 b43_upload_card_macaddress(dev);
4339 spin_unlock_irqrestore(&wl->irq_lock, flags);
4340
4341 err = 0;
4342 out_mutex_unlock:
4343 mutex_unlock(&wl->mutex);
4344
4345 return err;
4346 }
4347
4348 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4349 struct ieee80211_if_init_conf *conf)
4350 {
4351 struct b43_wl *wl = hw_to_b43_wl(hw);
4352 struct b43_wldev *dev = wl->current_dev;
4353 unsigned long flags;
4354
4355 b43dbg(wl, "Removing Interface type %d\n", conf->type);
4356
4357 mutex_lock(&wl->mutex);
4358
4359 B43_WARN_ON(!wl->operating);
4360 B43_WARN_ON(wl->vif != conf->vif);
4361 wl->vif = NULL;
4362
4363 wl->operating = 0;
4364
4365 spin_lock_irqsave(&wl->irq_lock, flags);
4366 b43_adjust_opmode(dev);
4367 memset(wl->mac_addr, 0, ETH_ALEN);
4368 b43_upload_card_macaddress(dev);
4369 spin_unlock_irqrestore(&wl->irq_lock, flags);
4370
4371 mutex_unlock(&wl->mutex);
4372 }
4373
4374 static int b43_op_start(struct ieee80211_hw *hw)
4375 {
4376 struct b43_wl *wl = hw_to_b43_wl(hw);
4377 struct b43_wldev *dev = wl->current_dev;
4378 int did_init = 0;
4379 int err = 0;
4380
4381 /* Kill all old instance specific information to make sure
4382 * the card won't use it in the short timeframe between start
4383 * and mac80211 reconfiguring it. */
4384 memset(wl->bssid, 0, ETH_ALEN);
4385 memset(wl->mac_addr, 0, ETH_ALEN);
4386 wl->filter_flags = 0;
4387 wl->radiotap_enabled = 0;
4388 b43_qos_clear(wl);
4389 wl->beacon0_uploaded = 0;
4390 wl->beacon1_uploaded = 0;
4391 wl->beacon_templates_virgin = 1;
4392 wl->radio_enabled = 1;
4393
4394 mutex_lock(&wl->mutex);
4395
4396 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4397 err = b43_wireless_core_init(dev);
4398 if (err)
4399 goto out_mutex_unlock;
4400 did_init = 1;
4401 }
4402
4403 if (b43_status(dev) < B43_STAT_STARTED) {
4404 err = b43_wireless_core_start(dev);
4405 if (err) {
4406 if (did_init)
4407 b43_wireless_core_exit(dev);
4408 goto out_mutex_unlock;
4409 }
4410 }
4411
4412 /* XXX: only do if device doesn't support rfkill irq */
4413 wiphy_rfkill_start_polling(hw->wiphy);
4414
4415 out_mutex_unlock:
4416 mutex_unlock(&wl->mutex);
4417
4418 return err;
4419 }
4420
4421 static void b43_op_stop(struct ieee80211_hw *hw)
4422 {
4423 struct b43_wl *wl = hw_to_b43_wl(hw);
4424 struct b43_wldev *dev = wl->current_dev;
4425
4426 cancel_work_sync(&(wl->beacon_update_trigger));
4427
4428 mutex_lock(&wl->mutex);
4429 if (b43_status(dev) >= B43_STAT_STARTED)
4430 b43_wireless_core_stop(dev);
4431 b43_wireless_core_exit(dev);
4432 wl->radio_enabled = 0;
4433 mutex_unlock(&wl->mutex);
4434
4435 cancel_work_sync(&(wl->txpower_adjust_work));
4436 }
4437
4438 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4439 struct ieee80211_sta *sta, bool set)
4440 {
4441 struct b43_wl *wl = hw_to_b43_wl(hw);
4442 unsigned long flags;
4443
4444 spin_lock_irqsave(&wl->irq_lock, flags);
4445 b43_update_templates(wl);
4446 spin_unlock_irqrestore(&wl->irq_lock, flags);
4447
4448 return 0;
4449 }
4450
4451 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4452 struct ieee80211_vif *vif,
4453 enum sta_notify_cmd notify_cmd,
4454 struct ieee80211_sta *sta)
4455 {
4456 struct b43_wl *wl = hw_to_b43_wl(hw);
4457
4458 B43_WARN_ON(!vif || wl->vif != vif);
4459 }
4460
4461 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4462 {
4463 struct b43_wl *wl = hw_to_b43_wl(hw);
4464 struct b43_wldev *dev;
4465
4466 mutex_lock(&wl->mutex);
4467 dev = wl->current_dev;
4468 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4469 /* Disable CFP update during scan on other channels. */
4470 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4471 }
4472 mutex_unlock(&wl->mutex);
4473 }
4474
4475 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4476 {
4477 struct b43_wl *wl = hw_to_b43_wl(hw);
4478 struct b43_wldev *dev;
4479
4480 mutex_lock(&wl->mutex);
4481 dev = wl->current_dev;
4482 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4483 /* Re-enable CFP update. */
4484 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4485 }
4486 mutex_unlock(&wl->mutex);
4487 }
4488
4489 static const struct ieee80211_ops b43_hw_ops = {
4490 .tx = b43_op_tx,
4491 .conf_tx = b43_op_conf_tx,
4492 .add_interface = b43_op_add_interface,
4493 .remove_interface = b43_op_remove_interface,
4494 .config = b43_op_config,
4495 .bss_info_changed = b43_op_bss_info_changed,
4496 .configure_filter = b43_op_configure_filter,
4497 .set_key = b43_op_set_key,
4498 .update_tkip_key = b43_op_update_tkip_key,
4499 .get_stats = b43_op_get_stats,
4500 .get_tx_stats = b43_op_get_tx_stats,
4501 .get_tsf = b43_op_get_tsf,
4502 .set_tsf = b43_op_set_tsf,
4503 .start = b43_op_start,
4504 .stop = b43_op_stop,
4505 .set_tim = b43_op_beacon_set_tim,
4506 .sta_notify = b43_op_sta_notify,
4507 .sw_scan_start = b43_op_sw_scan_start_notifier,
4508 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
4509 .rfkill_poll = b43_rfkill_poll,
4510 };
4511
4512 /* Hard-reset the chip. Do not call this directly.
4513 * Use b43_controller_restart()
4514 */
4515 static void b43_chip_reset(struct work_struct *work)
4516 {
4517 struct b43_wldev *dev =
4518 container_of(work, struct b43_wldev, restart_work);
4519 struct b43_wl *wl = dev->wl;
4520 int err = 0;
4521 int prev_status;
4522
4523 mutex_lock(&wl->mutex);
4524
4525 prev_status = b43_status(dev);
4526 /* Bring the device down... */
4527 if (prev_status >= B43_STAT_STARTED)
4528 b43_wireless_core_stop(dev);
4529 if (prev_status >= B43_STAT_INITIALIZED)
4530 b43_wireless_core_exit(dev);
4531
4532 /* ...and up again. */
4533 if (prev_status >= B43_STAT_INITIALIZED) {
4534 err = b43_wireless_core_init(dev);
4535 if (err)
4536 goto out;
4537 }
4538 if (prev_status >= B43_STAT_STARTED) {
4539 err = b43_wireless_core_start(dev);
4540 if (err) {
4541 b43_wireless_core_exit(dev);
4542 goto out;
4543 }
4544 }
4545 out:
4546 if (err)
4547 wl->current_dev = NULL; /* Failed to init the dev. */
4548 mutex_unlock(&wl->mutex);
4549 if (err)
4550 b43err(wl, "Controller restart FAILED\n");
4551 else
4552 b43info(wl, "Controller restarted\n");
4553 }
4554
4555 static int b43_setup_bands(struct b43_wldev *dev,
4556 bool have_2ghz_phy, bool have_5ghz_phy)
4557 {
4558 struct ieee80211_hw *hw = dev->wl->hw;
4559
4560 if (have_2ghz_phy)
4561 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4562 if (dev->phy.type == B43_PHYTYPE_N) {
4563 if (have_5ghz_phy)
4564 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4565 } else {
4566 if (have_5ghz_phy)
4567 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4568 }
4569
4570 dev->phy.supports_2ghz = have_2ghz_phy;
4571 dev->phy.supports_5ghz = have_5ghz_phy;
4572
4573 return 0;
4574 }
4575
4576 static void b43_wireless_core_detach(struct b43_wldev *dev)
4577 {
4578 /* We release firmware that late to not be required to re-request
4579 * is all the time when we reinit the core. */
4580 b43_release_firmware(dev);
4581 b43_phy_free(dev);
4582 }
4583
4584 static int b43_wireless_core_attach(struct b43_wldev *dev)
4585 {
4586 struct b43_wl *wl = dev->wl;
4587 struct ssb_bus *bus = dev->dev->bus;
4588 struct pci_dev *pdev = bus->host_pci;
4589 int err;
4590 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4591 u32 tmp;
4592
4593 /* Do NOT do any device initialization here.
4594 * Do it in wireless_core_init() instead.
4595 * This function is for gathering basic information about the HW, only.
4596 * Also some structs may be set up here. But most likely you want to have
4597 * that in core_init(), too.
4598 */
4599
4600 err = ssb_bus_powerup(bus, 0);
4601 if (err) {
4602 b43err(wl, "Bus powerup failed\n");
4603 goto out;
4604 }
4605 /* Get the PHY type. */
4606 if (dev->dev->id.revision >= 5) {
4607 u32 tmshigh;
4608
4609 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4610 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4611 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4612 } else
4613 B43_WARN_ON(1);
4614
4615 dev->phy.gmode = have_2ghz_phy;
4616 dev->phy.radio_on = 1;
4617 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4618 b43_wireless_core_reset(dev, tmp);
4619
4620 err = b43_phy_versioning(dev);
4621 if (err)
4622 goto err_powerdown;
4623 /* Check if this device supports multiband. */
4624 if (!pdev ||
4625 (pdev->device != 0x4312 &&
4626 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4627 /* No multiband support. */
4628 have_2ghz_phy = 0;
4629 have_5ghz_phy = 0;
4630 switch (dev->phy.type) {
4631 case B43_PHYTYPE_A:
4632 have_5ghz_phy = 1;
4633 break;
4634 case B43_PHYTYPE_LP: //FIXME not always!
4635 #if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
4636 have_5ghz_phy = 1;
4637 #endif
4638 case B43_PHYTYPE_G:
4639 case B43_PHYTYPE_N:
4640 have_2ghz_phy = 1;
4641 break;
4642 default:
4643 B43_WARN_ON(1);
4644 }
4645 }
4646 if (dev->phy.type == B43_PHYTYPE_A) {
4647 /* FIXME */
4648 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4649 err = -EOPNOTSUPP;
4650 goto err_powerdown;
4651 }
4652 if (1 /* disable A-PHY */) {
4653 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4654 if (dev->phy.type != B43_PHYTYPE_N &&
4655 dev->phy.type != B43_PHYTYPE_LP) {
4656 have_2ghz_phy = 1;
4657 have_5ghz_phy = 0;
4658 }
4659 }
4660
4661 err = b43_phy_allocate(dev);
4662 if (err)
4663 goto err_powerdown;
4664
4665 dev->phy.gmode = have_2ghz_phy;
4666 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4667 b43_wireless_core_reset(dev, tmp);
4668
4669 err = b43_validate_chipaccess(dev);
4670 if (err)
4671 goto err_phy_free;
4672 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4673 if (err)
4674 goto err_phy_free;
4675
4676 /* Now set some default "current_dev" */
4677 if (!wl->current_dev)
4678 wl->current_dev = dev;
4679 INIT_WORK(&dev->restart_work, b43_chip_reset);
4680
4681 dev->phy.ops->switch_analog(dev, 0);
4682 ssb_device_disable(dev->dev, 0);
4683 ssb_bus_may_powerdown(bus);
4684
4685 out:
4686 return err;
4687
4688 err_phy_free:
4689 b43_phy_free(dev);
4690 err_powerdown:
4691 ssb_bus_may_powerdown(bus);
4692 return err;
4693 }
4694
4695 static void b43_one_core_detach(struct ssb_device *dev)
4696 {
4697 struct b43_wldev *wldev;
4698 struct b43_wl *wl;
4699
4700 /* Do not cancel ieee80211-workqueue based work here.
4701 * See comment in b43_remove(). */
4702
4703 wldev = ssb_get_drvdata(dev);
4704 wl = wldev->wl;
4705 b43_debugfs_remove_device(wldev);
4706 b43_wireless_core_detach(wldev);
4707 list_del(&wldev->list);
4708 wl->nr_devs--;
4709 ssb_set_drvdata(dev, NULL);
4710 kfree(wldev);
4711 }
4712
4713 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4714 {
4715 struct b43_wldev *wldev;
4716 struct pci_dev *pdev;
4717 int err = -ENOMEM;
4718
4719 if (!list_empty(&wl->devlist)) {
4720 /* We are not the first core on this chip. */
4721 pdev = dev->bus->host_pci;
4722 /* Only special chips support more than one wireless
4723 * core, although some of the other chips have more than
4724 * one wireless core as well. Check for this and
4725 * bail out early.
4726 */
4727 if (!pdev ||
4728 ((pdev->device != 0x4321) &&
4729 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4730 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4731 return -ENODEV;
4732 }
4733 }
4734
4735 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4736 if (!wldev)
4737 goto out;
4738
4739 wldev->dev = dev;
4740 wldev->wl = wl;
4741 b43_set_status(wldev, B43_STAT_UNINIT);
4742 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4743 tasklet_init(&wldev->isr_tasklet,
4744 (void (*)(unsigned long))b43_interrupt_tasklet,
4745 (unsigned long)wldev);
4746 INIT_LIST_HEAD(&wldev->list);
4747
4748 err = b43_wireless_core_attach(wldev);
4749 if (err)
4750 goto err_kfree_wldev;
4751
4752 list_add(&wldev->list, &wl->devlist);
4753 wl->nr_devs++;
4754 ssb_set_drvdata(dev, wldev);
4755 b43_debugfs_add_device(wldev);
4756
4757 out:
4758 return err;
4759
4760 err_kfree_wldev:
4761 kfree(wldev);
4762 return err;
4763 }
4764
4765 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4766 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4767 (pdev->device == _device) && \
4768 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4769 (pdev->subsystem_device == _subdevice) )
4770
4771 static void b43_sprom_fixup(struct ssb_bus *bus)
4772 {
4773 struct pci_dev *pdev;
4774
4775 /* boardflags workarounds */
4776 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4777 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4778 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4779 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4780 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4781 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4782 if (bus->bustype == SSB_BUSTYPE_PCI) {
4783 pdev = bus->host_pci;
4784 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4785 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4786 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
4787 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4788 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4789 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4790 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4791 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4792 }
4793 }
4794
4795 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4796 {
4797 struct ieee80211_hw *hw = wl->hw;
4798
4799 ssb_set_devtypedata(dev, NULL);
4800 ieee80211_free_hw(hw);
4801 }
4802
4803 static int b43_wireless_init(struct ssb_device *dev)
4804 {
4805 struct ssb_sprom *sprom = &dev->bus->sprom;
4806 struct ieee80211_hw *hw;
4807 struct b43_wl *wl;
4808 int err = -ENOMEM;
4809
4810 b43_sprom_fixup(dev->bus);
4811
4812 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4813 if (!hw) {
4814 b43err(NULL, "Could not allocate ieee80211 device\n");
4815 goto out;
4816 }
4817 wl = hw_to_b43_wl(hw);
4818
4819 /* fill hw info */
4820 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4821 IEEE80211_HW_SIGNAL_DBM |
4822 IEEE80211_HW_NOISE_DBM;
4823
4824 hw->wiphy->interface_modes =
4825 BIT(NL80211_IFTYPE_AP) |
4826 BIT(NL80211_IFTYPE_MESH_POINT) |
4827 BIT(NL80211_IFTYPE_STATION) |
4828 BIT(NL80211_IFTYPE_WDS) |
4829 BIT(NL80211_IFTYPE_ADHOC);
4830
4831 hw->queues = modparam_qos ? 4 : 1;
4832 wl->mac80211_initially_registered_queues = hw->queues;
4833 hw->max_rates = 2;
4834 SET_IEEE80211_DEV(hw, dev->dev);
4835 if (is_valid_ether_addr(sprom->et1mac))
4836 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4837 else
4838 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4839
4840 /* Initialize struct b43_wl */
4841 wl->hw = hw;
4842 spin_lock_init(&wl->irq_lock);
4843 rwlock_init(&wl->tx_lock);
4844 spin_lock_init(&wl->leds_lock);
4845 spin_lock_init(&wl->shm_lock);
4846 mutex_init(&wl->mutex);
4847 INIT_LIST_HEAD(&wl->devlist);
4848 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4849 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4850
4851 ssb_set_devtypedata(dev, wl);
4852 b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
4853 dev->bus->chip_id, dev->id.revision);
4854 err = 0;
4855 out:
4856 return err;
4857 }
4858
4859 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4860 {
4861 struct b43_wl *wl;
4862 int err;
4863 int first = 0;
4864
4865 wl = ssb_get_devtypedata(dev);
4866 if (!wl) {
4867 /* Probing the first core. Must setup common struct b43_wl */
4868 first = 1;
4869 err = b43_wireless_init(dev);
4870 if (err)
4871 goto out;
4872 wl = ssb_get_devtypedata(dev);
4873 B43_WARN_ON(!wl);
4874 }
4875 err = b43_one_core_attach(dev, wl);
4876 if (err)
4877 goto err_wireless_exit;
4878
4879 if (first) {
4880 err = ieee80211_register_hw(wl->hw);
4881 if (err)
4882 goto err_one_core_detach;
4883 }
4884
4885 out:
4886 return err;
4887
4888 err_one_core_detach:
4889 b43_one_core_detach(dev);
4890 err_wireless_exit:
4891 if (first)
4892 b43_wireless_exit(dev, wl);
4893 return err;
4894 }
4895
4896 static void b43_remove(struct ssb_device *dev)
4897 {
4898 struct b43_wl *wl = ssb_get_devtypedata(dev);
4899 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4900
4901 /* We must cancel any work here before unregistering from ieee80211,
4902 * as the ieee80211 unreg will destroy the workqueue. */
4903 cancel_work_sync(&wldev->restart_work);
4904
4905 B43_WARN_ON(!wl);
4906 if (wl->current_dev == wldev) {
4907 /* Restore the queues count before unregistering, because firmware detect
4908 * might have modified it. Restoring is important, so the networking
4909 * stack can properly free resources. */
4910 wl->hw->queues = wl->mac80211_initially_registered_queues;
4911 ieee80211_unregister_hw(wl->hw);
4912 }
4913
4914 b43_one_core_detach(dev);
4915
4916 if (list_empty(&wl->devlist)) {
4917 /* Last core on the chip unregistered.
4918 * We can destroy common struct b43_wl.
4919 */
4920 b43_wireless_exit(dev, wl);
4921 }
4922 }
4923
4924 /* Perform a hardware reset. This can be called from any context. */
4925 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4926 {
4927 /* Must avoid requeueing, if we are in shutdown. */
4928 if (b43_status(dev) < B43_STAT_INITIALIZED)
4929 return;
4930 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4931 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
4932 }
4933
4934 #ifdef CONFIG_PM
4935
4936 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4937 {
4938 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4939 struct b43_wl *wl = wldev->wl;
4940
4941 b43dbg(wl, "Suspending...\n");
4942
4943 mutex_lock(&wl->mutex);
4944 wldev->suspend_in_progress = true;
4945 wldev->suspend_init_status = b43_status(wldev);
4946 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4947 b43_wireless_core_stop(wldev);
4948 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4949 b43_wireless_core_exit(wldev);
4950 mutex_unlock(&wl->mutex);
4951
4952 b43dbg(wl, "Device suspended.\n");
4953
4954 return 0;
4955 }
4956
4957 static int b43_resume(struct ssb_device *dev)
4958 {
4959 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4960 struct b43_wl *wl = wldev->wl;
4961 int err = 0;
4962
4963 b43dbg(wl, "Resuming...\n");
4964
4965 mutex_lock(&wl->mutex);
4966 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4967 err = b43_wireless_core_init(wldev);
4968 if (err) {
4969 b43err(wl, "Resume failed at core init\n");
4970 goto out;
4971 }
4972 }
4973 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4974 err = b43_wireless_core_start(wldev);
4975 if (err) {
4976 b43_leds_exit(wldev);
4977 b43_rng_exit(wldev->wl);
4978 b43_wireless_core_exit(wldev);
4979 b43err(wl, "Resume failed at core start\n");
4980 goto out;
4981 }
4982 }
4983 b43dbg(wl, "Device resumed.\n");
4984 out:
4985 wldev->suspend_in_progress = false;
4986 mutex_unlock(&wl->mutex);
4987 return err;
4988 }
4989
4990 #else /* CONFIG_PM */
4991 # define b43_suspend NULL
4992 # define b43_resume NULL
4993 #endif /* CONFIG_PM */
4994
4995 static struct ssb_driver b43_ssb_driver = {
4996 .name = KBUILD_MODNAME,
4997 .id_table = b43_ssb_tbl,
4998 .probe = b43_probe,
4999 .remove = b43_remove,
5000 .suspend = b43_suspend,
5001 .resume = b43_resume,
5002 };
5003
5004 static void b43_print_driverinfo(void)
5005 {
5006 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5007 *feat_leds = "";
5008
5009 #ifdef CONFIG_B43_PCI_AUTOSELECT
5010 feat_pci = "P";
5011 #endif
5012 #ifdef CONFIG_B43_PCMCIA
5013 feat_pcmcia = "M";
5014 #endif
5015 #ifdef CONFIG_B43_NPHY
5016 feat_nphy = "N";
5017 #endif
5018 #ifdef CONFIG_B43_LEDS
5019 feat_leds = "L";
5020 #endif
5021 printk(KERN_INFO "Broadcom 43xx driver loaded "
5022 "[ Features: %s%s%s%s, Firmware-ID: "
5023 B43_SUPPORTED_FIRMWARE_ID " ]\n",
5024 feat_pci, feat_pcmcia, feat_nphy,
5025 feat_leds);
5026 }
5027
5028 static int __init b43_init(void)
5029 {
5030 int err;
5031
5032 b43_debugfs_init();
5033 err = b43_pcmcia_init();
5034 if (err)
5035 goto err_dfs_exit;
5036 err = ssb_driver_register(&b43_ssb_driver);
5037 if (err)
5038 goto err_pcmcia_exit;
5039 b43_print_driverinfo();
5040
5041 return err;
5042
5043 err_pcmcia_exit:
5044 b43_pcmcia_exit();
5045 err_dfs_exit:
5046 b43_debugfs_exit();
5047 return err;
5048 }
5049
5050 static void __exit b43_exit(void)
5051 {
5052 ssb_driver_unregister(&b43_ssb_driver);
5053 b43_pcmcia_exit();
5054 b43_debugfs_exit();
5055 }
5056
5057 module_init(b43_init)
5058 module_exit(b43_exit)
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