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mac80211: unify config_interface and bss_info_changed
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / b43 / main.c
blob2615aaf7df6a458ce42fb82d54963730d49526d7
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 int b43_modparam_qos = 1;
84 module_param_named(qos, b43_modparam_qos, int, 0444);
85 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
86
87 static int modparam_btcoex = 1;
88 module_param_named(btcoex, modparam_btcoex, int, 0444);
89 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistance (default on)");
90
91 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
92 module_param_named(verbose, b43_modparam_verbose, int, 0644);
93 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
94
95
96 static const struct ssb_device_id b43_ssb_tbl[] = {
97 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
98 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
99 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
100 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
101 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
102 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
103 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
104 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
105 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
106 SSB_DEVTABLE_END
107 };
108
109 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
110
111 /* Channel and ratetables are shared for all devices.
112 * They can't be const, because ieee80211 puts some precalculated
113 * data in there. This data is the same for all devices, so we don't
114 * get concurrency issues */
115 #define RATETAB_ENT(_rateid, _flags) \
116 { \
117 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
118 .hw_value = (_rateid), \
119 .flags = (_flags), \
120 }
121
122 /*
123 * NOTE: When changing this, sync with xmit.c's
124 * b43_plcp_get_bitrate_idx_* functions!
125 */
126 static struct ieee80211_rate __b43_ratetable[] = {
127 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
128 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
129 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
130 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
131 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
132 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
133 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
134 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
135 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
136 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
137 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
138 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
139 };
140
141 #define b43_a_ratetable (__b43_ratetable + 4)
142 #define b43_a_ratetable_size 8
143 #define b43_b_ratetable (__b43_ratetable + 0)
144 #define b43_b_ratetable_size 4
145 #define b43_g_ratetable (__b43_ratetable + 0)
146 #define b43_g_ratetable_size 12
147
148 #define CHAN4G(_channel, _freq, _flags) { \
149 .band = IEEE80211_BAND_2GHZ, \
150 .center_freq = (_freq), \
151 .hw_value = (_channel), \
152 .flags = (_flags), \
153 .max_antenna_gain = 0, \
154 .max_power = 30, \
155 }
156 static struct ieee80211_channel b43_2ghz_chantable[] = {
157 CHAN4G(1, 2412, 0),
158 CHAN4G(2, 2417, 0),
159 CHAN4G(3, 2422, 0),
160 CHAN4G(4, 2427, 0),
161 CHAN4G(5, 2432, 0),
162 CHAN4G(6, 2437, 0),
163 CHAN4G(7, 2442, 0),
164 CHAN4G(8, 2447, 0),
165 CHAN4G(9, 2452, 0),
166 CHAN4G(10, 2457, 0),
167 CHAN4G(11, 2462, 0),
168 CHAN4G(12, 2467, 0),
169 CHAN4G(13, 2472, 0),
170 CHAN4G(14, 2484, 0),
171 };
172 #undef CHAN4G
173
174 #define CHAN5G(_channel, _flags) { \
175 .band = IEEE80211_BAND_5GHZ, \
176 .center_freq = 5000 + (5 * (_channel)), \
177 .hw_value = (_channel), \
178 .flags = (_flags), \
179 .max_antenna_gain = 0, \
180 .max_power = 30, \
181 }
182 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
183 CHAN5G(32, 0), CHAN5G(34, 0),
184 CHAN5G(36, 0), CHAN5G(38, 0),
185 CHAN5G(40, 0), CHAN5G(42, 0),
186 CHAN5G(44, 0), CHAN5G(46, 0),
187 CHAN5G(48, 0), CHAN5G(50, 0),
188 CHAN5G(52, 0), CHAN5G(54, 0),
189 CHAN5G(56, 0), CHAN5G(58, 0),
190 CHAN5G(60, 0), CHAN5G(62, 0),
191 CHAN5G(64, 0), CHAN5G(66, 0),
192 CHAN5G(68, 0), CHAN5G(70, 0),
193 CHAN5G(72, 0), CHAN5G(74, 0),
194 CHAN5G(76, 0), CHAN5G(78, 0),
195 CHAN5G(80, 0), CHAN5G(82, 0),
196 CHAN5G(84, 0), CHAN5G(86, 0),
197 CHAN5G(88, 0), CHAN5G(90, 0),
198 CHAN5G(92, 0), CHAN5G(94, 0),
199 CHAN5G(96, 0), CHAN5G(98, 0),
200 CHAN5G(100, 0), CHAN5G(102, 0),
201 CHAN5G(104, 0), CHAN5G(106, 0),
202 CHAN5G(108, 0), CHAN5G(110, 0),
203 CHAN5G(112, 0), CHAN5G(114, 0),
204 CHAN5G(116, 0), CHAN5G(118, 0),
205 CHAN5G(120, 0), CHAN5G(122, 0),
206 CHAN5G(124, 0), CHAN5G(126, 0),
207 CHAN5G(128, 0), CHAN5G(130, 0),
208 CHAN5G(132, 0), CHAN5G(134, 0),
209 CHAN5G(136, 0), CHAN5G(138, 0),
210 CHAN5G(140, 0), CHAN5G(142, 0),
211 CHAN5G(144, 0), CHAN5G(145, 0),
212 CHAN5G(146, 0), CHAN5G(147, 0),
213 CHAN5G(148, 0), CHAN5G(149, 0),
214 CHAN5G(150, 0), CHAN5G(151, 0),
215 CHAN5G(152, 0), CHAN5G(153, 0),
216 CHAN5G(154, 0), CHAN5G(155, 0),
217 CHAN5G(156, 0), CHAN5G(157, 0),
218 CHAN5G(158, 0), CHAN5G(159, 0),
219 CHAN5G(160, 0), CHAN5G(161, 0),
220 CHAN5G(162, 0), CHAN5G(163, 0),
221 CHAN5G(164, 0), CHAN5G(165, 0),
222 CHAN5G(166, 0), CHAN5G(168, 0),
223 CHAN5G(170, 0), CHAN5G(172, 0),
224 CHAN5G(174, 0), CHAN5G(176, 0),
225 CHAN5G(178, 0), CHAN5G(180, 0),
226 CHAN5G(182, 0), CHAN5G(184, 0),
227 CHAN5G(186, 0), CHAN5G(188, 0),
228 CHAN5G(190, 0), CHAN5G(192, 0),
229 CHAN5G(194, 0), CHAN5G(196, 0),
230 CHAN5G(198, 0), CHAN5G(200, 0),
231 CHAN5G(202, 0), CHAN5G(204, 0),
232 CHAN5G(206, 0), CHAN5G(208, 0),
233 CHAN5G(210, 0), CHAN5G(212, 0),
234 CHAN5G(214, 0), CHAN5G(216, 0),
235 CHAN5G(218, 0), CHAN5G(220, 0),
236 CHAN5G(222, 0), CHAN5G(224, 0),
237 CHAN5G(226, 0), CHAN5G(228, 0),
238 };
239
240 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
241 CHAN5G(34, 0), CHAN5G(36, 0),
242 CHAN5G(38, 0), CHAN5G(40, 0),
243 CHAN5G(42, 0), CHAN5G(44, 0),
244 CHAN5G(46, 0), CHAN5G(48, 0),
245 CHAN5G(52, 0), CHAN5G(56, 0),
246 CHAN5G(60, 0), CHAN5G(64, 0),
247 CHAN5G(100, 0), CHAN5G(104, 0),
248 CHAN5G(108, 0), CHAN5G(112, 0),
249 CHAN5G(116, 0), CHAN5G(120, 0),
250 CHAN5G(124, 0), CHAN5G(128, 0),
251 CHAN5G(132, 0), CHAN5G(136, 0),
252 CHAN5G(140, 0), CHAN5G(149, 0),
253 CHAN5G(153, 0), CHAN5G(157, 0),
254 CHAN5G(161, 0), CHAN5G(165, 0),
255 CHAN5G(184, 0), CHAN5G(188, 0),
256 CHAN5G(192, 0), CHAN5G(196, 0),
257 CHAN5G(200, 0), CHAN5G(204, 0),
258 CHAN5G(208, 0), CHAN5G(212, 0),
259 CHAN5G(216, 0),
260 };
261 #undef CHAN5G
262
263 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
264 .band = IEEE80211_BAND_5GHZ,
265 .channels = b43_5ghz_nphy_chantable,
266 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
267 .bitrates = b43_a_ratetable,
268 .n_bitrates = b43_a_ratetable_size,
269 };
270
271 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
272 .band = IEEE80211_BAND_5GHZ,
273 .channels = b43_5ghz_aphy_chantable,
274 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
275 .bitrates = b43_a_ratetable,
276 .n_bitrates = b43_a_ratetable_size,
277 };
278
279 static struct ieee80211_supported_band b43_band_2GHz = {
280 .band = IEEE80211_BAND_2GHZ,
281 .channels = b43_2ghz_chantable,
282 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
283 .bitrates = b43_g_ratetable,
284 .n_bitrates = b43_g_ratetable_size,
285 };
286
287 static void b43_wireless_core_exit(struct b43_wldev *dev);
288 static int b43_wireless_core_init(struct b43_wldev *dev);
289 static void b43_wireless_core_stop(struct b43_wldev *dev);
290 static int b43_wireless_core_start(struct b43_wldev *dev);
291
292 static int b43_ratelimit(struct b43_wl *wl)
293 {
294 if (!wl || !wl->current_dev)
295 return 1;
296 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
297 return 1;
298 /* We are up and running.
299 * Ratelimit the messages to avoid DoS over the net. */
300 return net_ratelimit();
301 }
302
303 void b43info(struct b43_wl *wl, const char *fmt, ...)
304 {
305 va_list args;
306
307 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
308 return;
309 if (!b43_ratelimit(wl))
310 return;
311 va_start(args, fmt);
312 printk(KERN_INFO "b43-%s: ",
313 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
314 vprintk(fmt, args);
315 va_end(args);
316 }
317
318 void b43err(struct b43_wl *wl, const char *fmt, ...)
319 {
320 va_list args;
321
322 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
323 return;
324 if (!b43_ratelimit(wl))
325 return;
326 va_start(args, fmt);
327 printk(KERN_ERR "b43-%s ERROR: ",
328 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
329 vprintk(fmt, args);
330 va_end(args);
331 }
332
333 void b43warn(struct b43_wl *wl, const char *fmt, ...)
334 {
335 va_list args;
336
337 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
338 return;
339 if (!b43_ratelimit(wl))
340 return;
341 va_start(args, fmt);
342 printk(KERN_WARNING "b43-%s warning: ",
343 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
344 vprintk(fmt, args);
345 va_end(args);
346 }
347
348 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
349 {
350 va_list args;
351
352 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
353 return;
354 va_start(args, fmt);
355 printk(KERN_DEBUG "b43-%s debug: ",
356 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
357 vprintk(fmt, args);
358 va_end(args);
359 }
360
361 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
362 {
363 u32 macctl;
364
365 B43_WARN_ON(offset % 4 != 0);
366
367 macctl = b43_read32(dev, B43_MMIO_MACCTL);
368 if (macctl & B43_MACCTL_BE)
369 val = swab32(val);
370
371 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
372 mmiowb();
373 b43_write32(dev, B43_MMIO_RAM_DATA, val);
374 }
375
376 static inline void b43_shm_control_word(struct b43_wldev *dev,
377 u16 routing, u16 offset)
378 {
379 u32 control;
380
381 /* "offset" is the WORD offset. */
382 control = routing;
383 control <<= 16;
384 control |= offset;
385 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
386 }
387
388 u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
389 {
390 u32 ret;
391
392 if (routing == B43_SHM_SHARED) {
393 B43_WARN_ON(offset & 0x0001);
394 if (offset & 0x0003) {
395 /* Unaligned access */
396 b43_shm_control_word(dev, routing, offset >> 2);
397 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
398 ret <<= 16;
399 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
400 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
401
402 goto out;
403 }
404 offset >>= 2;
405 }
406 b43_shm_control_word(dev, routing, offset);
407 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
408 out:
409 return ret;
410 }
411
412 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
413 {
414 struct b43_wl *wl = dev->wl;
415 unsigned long flags;
416 u32 ret;
417
418 spin_lock_irqsave(&wl->shm_lock, flags);
419 ret = __b43_shm_read32(dev, routing, offset);
420 spin_unlock_irqrestore(&wl->shm_lock, flags);
421
422 return ret;
423 }
424
425 u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
426 {
427 u16 ret;
428
429 if (routing == B43_SHM_SHARED) {
430 B43_WARN_ON(offset & 0x0001);
431 if (offset & 0x0003) {
432 /* Unaligned access */
433 b43_shm_control_word(dev, routing, offset >> 2);
434 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
435
436 goto out;
437 }
438 offset >>= 2;
439 }
440 b43_shm_control_word(dev, routing, offset);
441 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
442 out:
443 return ret;
444 }
445
446 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
447 {
448 struct b43_wl *wl = dev->wl;
449 unsigned long flags;
450 u16 ret;
451
452 spin_lock_irqsave(&wl->shm_lock, flags);
453 ret = __b43_shm_read16(dev, routing, offset);
454 spin_unlock_irqrestore(&wl->shm_lock, flags);
455
456 return ret;
457 }
458
459 void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
460 {
461 if (routing == B43_SHM_SHARED) {
462 B43_WARN_ON(offset & 0x0001);
463 if (offset & 0x0003) {
464 /* Unaligned access */
465 b43_shm_control_word(dev, routing, offset >> 2);
466 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
467 (value >> 16) & 0xffff);
468 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
469 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
470 return;
471 }
472 offset >>= 2;
473 }
474 b43_shm_control_word(dev, routing, offset);
475 b43_write32(dev, B43_MMIO_SHM_DATA, value);
476 }
477
478 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
479 {
480 struct b43_wl *wl = dev->wl;
481 unsigned long flags;
482
483 spin_lock_irqsave(&wl->shm_lock, flags);
484 __b43_shm_write32(dev, routing, offset, value);
485 spin_unlock_irqrestore(&wl->shm_lock, flags);
486 }
487
488 void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
489 {
490 if (routing == B43_SHM_SHARED) {
491 B43_WARN_ON(offset & 0x0001);
492 if (offset & 0x0003) {
493 /* Unaligned access */
494 b43_shm_control_word(dev, routing, offset >> 2);
495 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
496 return;
497 }
498 offset >>= 2;
499 }
500 b43_shm_control_word(dev, routing, offset);
501 b43_write16(dev, B43_MMIO_SHM_DATA, value);
502 }
503
504 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
505 {
506 struct b43_wl *wl = dev->wl;
507 unsigned long flags;
508
509 spin_lock_irqsave(&wl->shm_lock, flags);
510 __b43_shm_write16(dev, routing, offset, value);
511 spin_unlock_irqrestore(&wl->shm_lock, flags);
512 }
513
514 /* Read HostFlags */
515 u64 b43_hf_read(struct b43_wldev *dev)
516 {
517 u64 ret;
518
519 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
520 ret <<= 16;
521 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
522 ret <<= 16;
523 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
524
525 return ret;
526 }
527
528 /* Write HostFlags */
529 void b43_hf_write(struct b43_wldev *dev, u64 value)
530 {
531 u16 lo, mi, hi;
532
533 lo = (value & 0x00000000FFFFULL);
534 mi = (value & 0x0000FFFF0000ULL) >> 16;
535 hi = (value & 0xFFFF00000000ULL) >> 32;
536 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
537 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
538 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
539 }
540
541 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
542 {
543 u32 low, high;
544
545 B43_WARN_ON(dev->dev->id.revision < 3);
546
547 /* The hardware guarantees us an atomic read, if we
548 * read the low register first. */
549 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
550 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
551
552 *tsf = high;
553 *tsf <<= 32;
554 *tsf |= low;
555 }
556
557 static void b43_time_lock(struct b43_wldev *dev)
558 {
559 u32 macctl;
560
561 macctl = b43_read32(dev, B43_MMIO_MACCTL);
562 macctl |= B43_MACCTL_TBTTHOLD;
563 b43_write32(dev, B43_MMIO_MACCTL, macctl);
564 /* Commit the write */
565 b43_read32(dev, B43_MMIO_MACCTL);
566 }
567
568 static void b43_time_unlock(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_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
580 {
581 u32 low, high;
582
583 B43_WARN_ON(dev->dev->id.revision < 3);
584
585 low = tsf;
586 high = (tsf >> 32);
587 /* The hardware guarantees us an atomic write, if we
588 * write the low register first. */
589 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
590 mmiowb();
591 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
592 mmiowb();
593 }
594
595 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
596 {
597 b43_time_lock(dev);
598 b43_tsf_write_locked(dev, tsf);
599 b43_time_unlock(dev);
600 }
601
602 static
603 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
604 {
605 static const u8 zero_addr[ETH_ALEN] = { 0 };
606 u16 data;
607
608 if (!mac)
609 mac = zero_addr;
610
611 offset |= 0x0020;
612 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
613
614 data = mac[0];
615 data |= mac[1] << 8;
616 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
617 data = mac[2];
618 data |= mac[3] << 8;
619 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
620 data = mac[4];
621 data |= mac[5] << 8;
622 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
623 }
624
625 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
626 {
627 const u8 *mac;
628 const u8 *bssid;
629 u8 mac_bssid[ETH_ALEN * 2];
630 int i;
631 u32 tmp;
632
633 bssid = dev->wl->bssid;
634 mac = dev->wl->mac_addr;
635
636 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
637
638 memcpy(mac_bssid, mac, ETH_ALEN);
639 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
640
641 /* Write our MAC address and BSSID to template ram */
642 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
643 tmp = (u32) (mac_bssid[i + 0]);
644 tmp |= (u32) (mac_bssid[i + 1]) << 8;
645 tmp |= (u32) (mac_bssid[i + 2]) << 16;
646 tmp |= (u32) (mac_bssid[i + 3]) << 24;
647 b43_ram_write(dev, 0x20 + i, tmp);
648 }
649 }
650
651 static void b43_upload_card_macaddress(struct b43_wldev *dev)
652 {
653 b43_write_mac_bssid_templates(dev);
654 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
655 }
656
657 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
658 {
659 /* slot_time is in usec. */
660 if (dev->phy.type != B43_PHYTYPE_G)
661 return;
662 b43_write16(dev, 0x684, 510 + slot_time);
663 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
664 }
665
666 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
667 {
668 b43_set_slot_time(dev, 9);
669 }
670
671 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
672 {
673 b43_set_slot_time(dev, 20);
674 }
675
676 /* Synchronize IRQ top- and bottom-half.
677 * IRQs must be masked before calling this.
678 * This must not be called with the irq_lock held.
679 */
680 static void b43_synchronize_irq(struct b43_wldev *dev)
681 {
682 synchronize_irq(dev->dev->irq);
683 tasklet_kill(&dev->isr_tasklet);
684 }
685
686 /* DummyTransmission function, as documented on
687 * http://bcm-specs.sipsolutions.net/DummyTransmission
688 */
689 void b43_dummy_transmission(struct b43_wldev *dev)
690 {
691 struct b43_wl *wl = dev->wl;
692 struct b43_phy *phy = &dev->phy;
693 unsigned int i, max_loop;
694 u16 value;
695 u32 buffer[5] = {
696 0x00000000,
697 0x00D40000,
698 0x00000000,
699 0x01000000,
700 0x00000000,
701 };
702
703 switch (phy->type) {
704 case B43_PHYTYPE_A:
705 max_loop = 0x1E;
706 buffer[0] = 0x000201CC;
707 break;
708 case B43_PHYTYPE_B:
709 case B43_PHYTYPE_G:
710 max_loop = 0xFA;
711 buffer[0] = 0x000B846E;
712 break;
713 default:
714 B43_WARN_ON(1);
715 return;
716 }
717
718 spin_lock_irq(&wl->irq_lock);
719 write_lock(&wl->tx_lock);
720
721 for (i = 0; i < 5; i++)
722 b43_ram_write(dev, i * 4, buffer[i]);
723
724 /* Commit writes */
725 b43_read32(dev, B43_MMIO_MACCTL);
726
727 b43_write16(dev, 0x0568, 0x0000);
728 b43_write16(dev, 0x07C0, 0x0000);
729 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
730 b43_write16(dev, 0x050C, value);
731 b43_write16(dev, 0x0508, 0x0000);
732 b43_write16(dev, 0x050A, 0x0000);
733 b43_write16(dev, 0x054C, 0x0000);
734 b43_write16(dev, 0x056A, 0x0014);
735 b43_write16(dev, 0x0568, 0x0826);
736 b43_write16(dev, 0x0500, 0x0000);
737 b43_write16(dev, 0x0502, 0x0030);
738
739 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
740 b43_radio_write16(dev, 0x0051, 0x0017);
741 for (i = 0x00; i < max_loop; i++) {
742 value = b43_read16(dev, 0x050E);
743 if (value & 0x0080)
744 break;
745 udelay(10);
746 }
747 for (i = 0x00; i < 0x0A; i++) {
748 value = b43_read16(dev, 0x050E);
749 if (value & 0x0400)
750 break;
751 udelay(10);
752 }
753 for (i = 0x00; i < 0x19; i++) {
754 value = b43_read16(dev, 0x0690);
755 if (!(value & 0x0100))
756 break;
757 udelay(10);
758 }
759 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
760 b43_radio_write16(dev, 0x0051, 0x0037);
761
762 write_unlock(&wl->tx_lock);
763 spin_unlock_irq(&wl->irq_lock);
764 }
765
766 static void key_write(struct b43_wldev *dev,
767 u8 index, u8 algorithm, const u8 *key)
768 {
769 unsigned int i;
770 u32 offset;
771 u16 value;
772 u16 kidx;
773
774 /* Key index/algo block */
775 kidx = b43_kidx_to_fw(dev, index);
776 value = ((kidx << 4) | algorithm);
777 b43_shm_write16(dev, B43_SHM_SHARED,
778 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
779
780 /* Write the key to the Key Table Pointer offset */
781 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
782 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
783 value = key[i];
784 value |= (u16) (key[i + 1]) << 8;
785 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
786 }
787 }
788
789 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
790 {
791 u32 addrtmp[2] = { 0, 0, };
792 u8 per_sta_keys_start = 8;
793
794 if (b43_new_kidx_api(dev))
795 per_sta_keys_start = 4;
796
797 B43_WARN_ON(index < per_sta_keys_start);
798 /* We have two default TX keys and possibly two default RX keys.
799 * Physical mac 0 is mapped to physical key 4 or 8, depending
800 * on the firmware version.
801 * So we must adjust the index here.
802 */
803 index -= per_sta_keys_start;
804
805 if (addr) {
806 addrtmp[0] = addr[0];
807 addrtmp[0] |= ((u32) (addr[1]) << 8);
808 addrtmp[0] |= ((u32) (addr[2]) << 16);
809 addrtmp[0] |= ((u32) (addr[3]) << 24);
810 addrtmp[1] = addr[4];
811 addrtmp[1] |= ((u32) (addr[5]) << 8);
812 }
813
814 if (dev->dev->id.revision >= 5) {
815 /* Receive match transmitter address mechanism */
816 b43_shm_write32(dev, B43_SHM_RCMTA,
817 (index * 2) + 0, addrtmp[0]);
818 b43_shm_write16(dev, B43_SHM_RCMTA,
819 (index * 2) + 1, addrtmp[1]);
820 } else {
821 /* RXE (Receive Engine) and
822 * PSM (Programmable State Machine) mechanism
823 */
824 if (index < 8) {
825 /* TODO write to RCM 16, 19, 22 and 25 */
826 } else {
827 b43_shm_write32(dev, B43_SHM_SHARED,
828 B43_SHM_SH_PSM + (index * 6) + 0,
829 addrtmp[0]);
830 b43_shm_write16(dev, B43_SHM_SHARED,
831 B43_SHM_SH_PSM + (index * 6) + 4,
832 addrtmp[1]);
833 }
834 }
835 }
836
837 static void do_key_write(struct b43_wldev *dev,
838 u8 index, u8 algorithm,
839 const u8 *key, size_t key_len, const u8 *mac_addr)
840 {
841 u8 buf[B43_SEC_KEYSIZE] = { 0, };
842 u8 per_sta_keys_start = 8;
843
844 if (b43_new_kidx_api(dev))
845 per_sta_keys_start = 4;
846
847 B43_WARN_ON(index >= dev->max_nr_keys);
848 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
849
850 if (index >= per_sta_keys_start)
851 keymac_write(dev, index, NULL); /* First zero out mac. */
852 if (key)
853 memcpy(buf, key, key_len);
854 key_write(dev, index, algorithm, buf);
855 if (index >= per_sta_keys_start)
856 keymac_write(dev, index, mac_addr);
857
858 dev->key[index].algorithm = algorithm;
859 }
860
861 static int b43_key_write(struct b43_wldev *dev,
862 int index, u8 algorithm,
863 const u8 *key, size_t key_len,
864 const u8 *mac_addr,
865 struct ieee80211_key_conf *keyconf)
866 {
867 int i;
868 int sta_keys_start;
869
870 if (key_len > B43_SEC_KEYSIZE)
871 return -EINVAL;
872 for (i = 0; i < dev->max_nr_keys; i++) {
873 /* Check that we don't already have this key. */
874 B43_WARN_ON(dev->key[i].keyconf == keyconf);
875 }
876 if (index < 0) {
877 /* Pairwise key. Get an empty slot for the key. */
878 if (b43_new_kidx_api(dev))
879 sta_keys_start = 4;
880 else
881 sta_keys_start = 8;
882 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
883 if (!dev->key[i].keyconf) {
884 /* found empty */
885 index = i;
886 break;
887 }
888 }
889 if (index < 0) {
890 b43warn(dev->wl, "Out of hardware key memory\n");
891 return -ENOSPC;
892 }
893 } else
894 B43_WARN_ON(index > 3);
895
896 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
897 if ((index <= 3) && !b43_new_kidx_api(dev)) {
898 /* Default RX key */
899 B43_WARN_ON(mac_addr);
900 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
901 }
902 keyconf->hw_key_idx = index;
903 dev->key[index].keyconf = keyconf;
904
905 return 0;
906 }
907
908 static int b43_key_clear(struct b43_wldev *dev, int index)
909 {
910 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
911 return -EINVAL;
912 do_key_write(dev, index, B43_SEC_ALGO_NONE,
913 NULL, B43_SEC_KEYSIZE, NULL);
914 if ((index <= 3) && !b43_new_kidx_api(dev)) {
915 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
916 NULL, B43_SEC_KEYSIZE, NULL);
917 }
918 dev->key[index].keyconf = NULL;
919
920 return 0;
921 }
922
923 static void b43_clear_keys(struct b43_wldev *dev)
924 {
925 int i;
926
927 for (i = 0; i < dev->max_nr_keys; i++)
928 b43_key_clear(dev, i);
929 }
930
931 static void b43_dump_keymemory(struct b43_wldev *dev)
932 {
933 unsigned int i, index, offset;
934 DECLARE_MAC_BUF(macbuf);
935 u8 mac[ETH_ALEN];
936 u16 algo;
937 u32 rcmta0;
938 u16 rcmta1;
939 u64 hf;
940 struct b43_key *key;
941
942 if (!b43_debug(dev, B43_DBG_KEYS))
943 return;
944
945 hf = b43_hf_read(dev);
946 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
947 !!(hf & B43_HF_USEDEFKEYS));
948 for (index = 0; index < dev->max_nr_keys; index++) {
949 key = &(dev->key[index]);
950 printk(KERN_DEBUG "Key slot %02u: %s",
951 index, (key->keyconf == NULL) ? " " : "*");
952 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
953 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
954 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
955 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
956 }
957
958 algo = b43_shm_read16(dev, B43_SHM_SHARED,
959 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
960 printk(" Algo: %04X/%02X", algo, key->algorithm);
961
962 if (index >= 4) {
963 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
964 ((index - 4) * 2) + 0);
965 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
966 ((index - 4) * 2) + 1);
967 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
968 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
969 printk(" MAC: %s",
970 print_mac(macbuf, mac));
971 } else
972 printk(" DEFAULT KEY");
973 printk("\n");
974 }
975 }
976
977 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
978 {
979 u32 macctl;
980 u16 ucstat;
981 bool hwps;
982 bool awake;
983 int i;
984
985 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
986 (ps_flags & B43_PS_DISABLED));
987 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
988
989 if (ps_flags & B43_PS_ENABLED) {
990 hwps = 1;
991 } else if (ps_flags & B43_PS_DISABLED) {
992 hwps = 0;
993 } else {
994 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
995 // and thus is not an AP and we are associated, set bit 25
996 }
997 if (ps_flags & B43_PS_AWAKE) {
998 awake = 1;
999 } else if (ps_flags & B43_PS_ASLEEP) {
1000 awake = 0;
1001 } else {
1002 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1003 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1004 // successful, set bit26
1005 }
1006
1007 /* FIXME: For now we force awake-on and hwps-off */
1008 hwps = 0;
1009 awake = 1;
1010
1011 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1012 if (hwps)
1013 macctl |= B43_MACCTL_HWPS;
1014 else
1015 macctl &= ~B43_MACCTL_HWPS;
1016 if (awake)
1017 macctl |= B43_MACCTL_AWAKE;
1018 else
1019 macctl &= ~B43_MACCTL_AWAKE;
1020 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1021 /* Commit write */
1022 b43_read32(dev, B43_MMIO_MACCTL);
1023 if (awake && dev->dev->id.revision >= 5) {
1024 /* Wait for the microcode to wake up. */
1025 for (i = 0; i < 100; i++) {
1026 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1027 B43_SHM_SH_UCODESTAT);
1028 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1029 break;
1030 udelay(10);
1031 }
1032 }
1033 }
1034
1035 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1036 {
1037 u32 tmslow;
1038 u32 macctl;
1039
1040 flags |= B43_TMSLOW_PHYCLKEN;
1041 flags |= B43_TMSLOW_PHYRESET;
1042 ssb_device_enable(dev->dev, flags);
1043 msleep(2); /* Wait for the PLL to turn on. */
1044
1045 /* Now take the PHY out of Reset again */
1046 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1047 tmslow |= SSB_TMSLOW_FGC;
1048 tmslow &= ~B43_TMSLOW_PHYRESET;
1049 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1050 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1051 msleep(1);
1052 tmslow &= ~SSB_TMSLOW_FGC;
1053 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1054 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1055 msleep(1);
1056
1057 /* Turn Analog ON, but only if we already know the PHY-type.
1058 * This protects against very early setup where we don't know the
1059 * PHY-type, yet. wireless_core_reset will be called once again later,
1060 * when we know the PHY-type. */
1061 if (dev->phy.ops)
1062 dev->phy.ops->switch_analog(dev, 1);
1063
1064 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1065 macctl &= ~B43_MACCTL_GMODE;
1066 if (flags & B43_TMSLOW_GMODE)
1067 macctl |= B43_MACCTL_GMODE;
1068 macctl |= B43_MACCTL_IHR_ENABLED;
1069 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1070 }
1071
1072 static void handle_irq_transmit_status(struct b43_wldev *dev)
1073 {
1074 u32 v0, v1;
1075 u16 tmp;
1076 struct b43_txstatus stat;
1077
1078 while (1) {
1079 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1080 if (!(v0 & 0x00000001))
1081 break;
1082 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1083
1084 stat.cookie = (v0 >> 16);
1085 stat.seq = (v1 & 0x0000FFFF);
1086 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1087 tmp = (v0 & 0x0000FFFF);
1088 stat.frame_count = ((tmp & 0xF000) >> 12);
1089 stat.rts_count = ((tmp & 0x0F00) >> 8);
1090 stat.supp_reason = ((tmp & 0x001C) >> 2);
1091 stat.pm_indicated = !!(tmp & 0x0080);
1092 stat.intermediate = !!(tmp & 0x0040);
1093 stat.for_ampdu = !!(tmp & 0x0020);
1094 stat.acked = !!(tmp & 0x0002);
1095
1096 b43_handle_txstatus(dev, &stat);
1097 }
1098 }
1099
1100 static void drain_txstatus_queue(struct b43_wldev *dev)
1101 {
1102 u32 dummy;
1103
1104 if (dev->dev->id.revision < 5)
1105 return;
1106 /* Read all entries from the microcode TXstatus FIFO
1107 * and throw them away.
1108 */
1109 while (1) {
1110 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1111 if (!(dummy & 0x00000001))
1112 break;
1113 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1114 }
1115 }
1116
1117 static u32 b43_jssi_read(struct b43_wldev *dev)
1118 {
1119 u32 val = 0;
1120
1121 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1122 val <<= 16;
1123 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1124
1125 return val;
1126 }
1127
1128 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1129 {
1130 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1131 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1132 }
1133
1134 static void b43_generate_noise_sample(struct b43_wldev *dev)
1135 {
1136 b43_jssi_write(dev, 0x7F7F7F7F);
1137 b43_write32(dev, B43_MMIO_MACCMD,
1138 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1139 }
1140
1141 static void b43_calculate_link_quality(struct b43_wldev *dev)
1142 {
1143 /* Top half of Link Quality calculation. */
1144
1145 if (dev->phy.type != B43_PHYTYPE_G)
1146 return;
1147 if (dev->noisecalc.calculation_running)
1148 return;
1149 dev->noisecalc.calculation_running = 1;
1150 dev->noisecalc.nr_samples = 0;
1151
1152 b43_generate_noise_sample(dev);
1153 }
1154
1155 static void handle_irq_noise(struct b43_wldev *dev)
1156 {
1157 struct b43_phy_g *phy = dev->phy.g;
1158 u16 tmp;
1159 u8 noise[4];
1160 u8 i, j;
1161 s32 average;
1162
1163 /* Bottom half of Link Quality calculation. */
1164
1165 if (dev->phy.type != B43_PHYTYPE_G)
1166 return;
1167
1168 /* Possible race condition: It might be possible that the user
1169 * changed to a different channel in the meantime since we
1170 * started the calculation. We ignore that fact, since it's
1171 * not really that much of a problem. The background noise is
1172 * an estimation only anyway. Slightly wrong results will get damped
1173 * by the averaging of the 8 sample rounds. Additionally the
1174 * value is shortlived. So it will be replaced by the next noise
1175 * calculation round soon. */
1176
1177 B43_WARN_ON(!dev->noisecalc.calculation_running);
1178 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1179 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1180 noise[2] == 0x7F || noise[3] == 0x7F)
1181 goto generate_new;
1182
1183 /* Get the noise samples. */
1184 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1185 i = dev->noisecalc.nr_samples;
1186 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1187 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1188 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1189 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1190 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1191 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1192 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1193 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1194 dev->noisecalc.nr_samples++;
1195 if (dev->noisecalc.nr_samples == 8) {
1196 /* Calculate the Link Quality by the noise samples. */
1197 average = 0;
1198 for (i = 0; i < 8; i++) {
1199 for (j = 0; j < 4; j++)
1200 average += dev->noisecalc.samples[i][j];
1201 }
1202 average /= (8 * 4);
1203 average *= 125;
1204 average += 64;
1205 average /= 128;
1206 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1207 tmp = (tmp / 128) & 0x1F;
1208 if (tmp >= 8)
1209 average += 2;
1210 else
1211 average -= 25;
1212 if (tmp == 8)
1213 average -= 72;
1214 else
1215 average -= 48;
1216
1217 dev->stats.link_noise = average;
1218 dev->noisecalc.calculation_running = 0;
1219 return;
1220 }
1221 generate_new:
1222 b43_generate_noise_sample(dev);
1223 }
1224
1225 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1226 {
1227 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1228 ///TODO: PS TBTT
1229 } else {
1230 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1231 b43_power_saving_ctl_bits(dev, 0);
1232 }
1233 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1234 dev->dfq_valid = 1;
1235 }
1236
1237 static void handle_irq_atim_end(struct b43_wldev *dev)
1238 {
1239 if (dev->dfq_valid) {
1240 b43_write32(dev, B43_MMIO_MACCMD,
1241 b43_read32(dev, B43_MMIO_MACCMD)
1242 | B43_MACCMD_DFQ_VALID);
1243 dev->dfq_valid = 0;
1244 }
1245 }
1246
1247 static void handle_irq_pmq(struct b43_wldev *dev)
1248 {
1249 u32 tmp;
1250
1251 //TODO: AP mode.
1252
1253 while (1) {
1254 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1255 if (!(tmp & 0x00000008))
1256 break;
1257 }
1258 /* 16bit write is odd, but correct. */
1259 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1260 }
1261
1262 static void b43_write_template_common(struct b43_wldev *dev,
1263 const u8 *data, u16 size,
1264 u16 ram_offset,
1265 u16 shm_size_offset, u8 rate)
1266 {
1267 u32 i, tmp;
1268 struct b43_plcp_hdr4 plcp;
1269
1270 plcp.data = 0;
1271 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1272 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1273 ram_offset += sizeof(u32);
1274 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1275 * So leave the first two bytes of the next write blank.
1276 */
1277 tmp = (u32) (data[0]) << 16;
1278 tmp |= (u32) (data[1]) << 24;
1279 b43_ram_write(dev, ram_offset, tmp);
1280 ram_offset += sizeof(u32);
1281 for (i = 2; i < size; i += sizeof(u32)) {
1282 tmp = (u32) (data[i + 0]);
1283 if (i + 1 < size)
1284 tmp |= (u32) (data[i + 1]) << 8;
1285 if (i + 2 < size)
1286 tmp |= (u32) (data[i + 2]) << 16;
1287 if (i + 3 < size)
1288 tmp |= (u32) (data[i + 3]) << 24;
1289 b43_ram_write(dev, ram_offset + i - 2, tmp);
1290 }
1291 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1292 size + sizeof(struct b43_plcp_hdr6));
1293 }
1294
1295 /* Check if the use of the antenna that ieee80211 told us to
1296 * use is possible. This will fall back to DEFAULT.
1297 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1298 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1299 u8 antenna_nr)
1300 {
1301 u8 antenna_mask;
1302
1303 if (antenna_nr == 0) {
1304 /* Zero means "use default antenna". That's always OK. */
1305 return 0;
1306 }
1307
1308 /* Get the mask of available antennas. */
1309 if (dev->phy.gmode)
1310 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1311 else
1312 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1313
1314 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1315 /* This antenna is not available. Fall back to default. */
1316 return 0;
1317 }
1318
1319 return antenna_nr;
1320 }
1321
1322 /* Convert a b43 antenna number value to the PHY TX control value. */
1323 static u16 b43_antenna_to_phyctl(int antenna)
1324 {
1325 switch (antenna) {
1326 case B43_ANTENNA0:
1327 return B43_TXH_PHY_ANT0;
1328 case B43_ANTENNA1:
1329 return B43_TXH_PHY_ANT1;
1330 case B43_ANTENNA2:
1331 return B43_TXH_PHY_ANT2;
1332 case B43_ANTENNA3:
1333 return B43_TXH_PHY_ANT3;
1334 case B43_ANTENNA_AUTO:
1335 return B43_TXH_PHY_ANT01AUTO;
1336 }
1337 B43_WARN_ON(1);
1338 return 0;
1339 }
1340
1341 static void b43_write_beacon_template(struct b43_wldev *dev,
1342 u16 ram_offset,
1343 u16 shm_size_offset)
1344 {
1345 unsigned int i, len, variable_len;
1346 const struct ieee80211_mgmt *bcn;
1347 const u8 *ie;
1348 bool tim_found = 0;
1349 unsigned int rate;
1350 u16 ctl;
1351 int antenna;
1352 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1353
1354 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1355 len = min((size_t) dev->wl->current_beacon->len,
1356 0x200 - sizeof(struct b43_plcp_hdr6));
1357 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1358
1359 b43_write_template_common(dev, (const u8 *)bcn,
1360 len, ram_offset, shm_size_offset, rate);
1361
1362 /* Write the PHY TX control parameters. */
1363 antenna = B43_ANTENNA_DEFAULT;
1364 antenna = b43_antenna_to_phyctl(antenna);
1365 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1366 /* We can't send beacons with short preamble. Would get PHY errors. */
1367 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1368 ctl &= ~B43_TXH_PHY_ANT;
1369 ctl &= ~B43_TXH_PHY_ENC;
1370 ctl |= antenna;
1371 if (b43_is_cck_rate(rate))
1372 ctl |= B43_TXH_PHY_ENC_CCK;
1373 else
1374 ctl |= B43_TXH_PHY_ENC_OFDM;
1375 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1376
1377 /* Find the position of the TIM and the DTIM_period value
1378 * and write them to SHM. */
1379 ie = bcn->u.beacon.variable;
1380 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1381 for (i = 0; i < variable_len - 2; ) {
1382 uint8_t ie_id, ie_len;
1383
1384 ie_id = ie[i];
1385 ie_len = ie[i + 1];
1386 if (ie_id == 5) {
1387 u16 tim_position;
1388 u16 dtim_period;
1389 /* This is the TIM Information Element */
1390
1391 /* Check whether the ie_len is in the beacon data range. */
1392 if (variable_len < ie_len + 2 + i)
1393 break;
1394 /* A valid TIM is at least 4 bytes long. */
1395 if (ie_len < 4)
1396 break;
1397 tim_found = 1;
1398
1399 tim_position = sizeof(struct b43_plcp_hdr6);
1400 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1401 tim_position += i;
1402
1403 dtim_period = ie[i + 3];
1404
1405 b43_shm_write16(dev, B43_SHM_SHARED,
1406 B43_SHM_SH_TIMBPOS, tim_position);
1407 b43_shm_write16(dev, B43_SHM_SHARED,
1408 B43_SHM_SH_DTIMPER, dtim_period);
1409 break;
1410 }
1411 i += ie_len + 2;
1412 }
1413 if (!tim_found) {
1414 /*
1415 * If ucode wants to modify TIM do it behind the beacon, this
1416 * will happen, for example, when doing mesh networking.
1417 */
1418 b43_shm_write16(dev, B43_SHM_SHARED,
1419 B43_SHM_SH_TIMBPOS,
1420 len + sizeof(struct b43_plcp_hdr6));
1421 b43_shm_write16(dev, B43_SHM_SHARED,
1422 B43_SHM_SH_DTIMPER, 0);
1423 }
1424 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1425 }
1426
1427 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1428 u16 shm_offset, u16 size,
1429 struct ieee80211_rate *rate)
1430 {
1431 struct b43_plcp_hdr4 plcp;
1432 u32 tmp;
1433 __le16 dur;
1434
1435 plcp.data = 0;
1436 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1437 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1438 dev->wl->vif, size,
1439 rate);
1440 /* Write PLCP in two parts and timing for packet transfer */
1441 tmp = le32_to_cpu(plcp.data);
1442 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1443 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1444 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1445 }
1446
1447 /* Instead of using custom probe response template, this function
1448 * just patches custom beacon template by:
1449 * 1) Changing packet type
1450 * 2) Patching duration field
1451 * 3) Stripping TIM
1452 */
1453 static const u8 *b43_generate_probe_resp(struct b43_wldev *dev,
1454 u16 *dest_size,
1455 struct ieee80211_rate *rate)
1456 {
1457 const u8 *src_data;
1458 u8 *dest_data;
1459 u16 src_size, elem_size, src_pos, dest_pos;
1460 __le16 dur;
1461 struct ieee80211_hdr *hdr;
1462 size_t ie_start;
1463
1464 src_size = dev->wl->current_beacon->len;
1465 src_data = (const u8 *)dev->wl->current_beacon->data;
1466
1467 /* Get the start offset of the variable IEs in the packet. */
1468 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1469 B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1470
1471 if (B43_WARN_ON(src_size < ie_start))
1472 return NULL;
1473
1474 dest_data = kmalloc(src_size, GFP_ATOMIC);
1475 if (unlikely(!dest_data))
1476 return NULL;
1477
1478 /* Copy the static data and all Information Elements, except the TIM. */
1479 memcpy(dest_data, src_data, ie_start);
1480 src_pos = ie_start;
1481 dest_pos = ie_start;
1482 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1483 elem_size = src_data[src_pos + 1] + 2;
1484 if (src_data[src_pos] == 5) {
1485 /* This is the TIM. */
1486 continue;
1487 }
1488 memcpy(dest_data + dest_pos, src_data + src_pos,
1489 elem_size);
1490 dest_pos += elem_size;
1491 }
1492 *dest_size = dest_pos;
1493 hdr = (struct ieee80211_hdr *)dest_data;
1494
1495 /* Set the frame control. */
1496 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1497 IEEE80211_STYPE_PROBE_RESP);
1498 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1499 dev->wl->vif, *dest_size,
1500 rate);
1501 hdr->duration_id = dur;
1502
1503 return dest_data;
1504 }
1505
1506 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1507 u16 ram_offset,
1508 u16 shm_size_offset,
1509 struct ieee80211_rate *rate)
1510 {
1511 const u8 *probe_resp_data;
1512 u16 size;
1513
1514 size = dev->wl->current_beacon->len;
1515 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1516 if (unlikely(!probe_resp_data))
1517 return;
1518
1519 /* Looks like PLCP headers plus packet timings are stored for
1520 * all possible basic rates
1521 */
1522 b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1523 b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1524 b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1525 b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1526
1527 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1528 b43_write_template_common(dev, probe_resp_data,
1529 size, ram_offset, shm_size_offset,
1530 rate->hw_value);
1531 kfree(probe_resp_data);
1532 }
1533
1534 static void b43_upload_beacon0(struct b43_wldev *dev)
1535 {
1536 struct b43_wl *wl = dev->wl;
1537
1538 if (wl->beacon0_uploaded)
1539 return;
1540 b43_write_beacon_template(dev, 0x68, 0x18);
1541 /* FIXME: Probe resp upload doesn't really belong here,
1542 * but we don't use that feature anyway. */
1543 b43_write_probe_resp_template(dev, 0x268, 0x4A,
1544 &__b43_ratetable[3]);
1545 wl->beacon0_uploaded = 1;
1546 }
1547
1548 static void b43_upload_beacon1(struct b43_wldev *dev)
1549 {
1550 struct b43_wl *wl = dev->wl;
1551
1552 if (wl->beacon1_uploaded)
1553 return;
1554 b43_write_beacon_template(dev, 0x468, 0x1A);
1555 wl->beacon1_uploaded = 1;
1556 }
1557
1558 static void handle_irq_beacon(struct b43_wldev *dev)
1559 {
1560 struct b43_wl *wl = dev->wl;
1561 u32 cmd, beacon0_valid, beacon1_valid;
1562
1563 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1564 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1565 return;
1566
1567 /* This is the bottom half of the asynchronous beacon update. */
1568
1569 /* Ignore interrupt in the future. */
1570 dev->irq_mask &= ~B43_IRQ_BEACON;
1571
1572 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1573 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1574 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1575
1576 /* Schedule interrupt manually, if busy. */
1577 if (beacon0_valid && beacon1_valid) {
1578 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1579 dev->irq_mask |= B43_IRQ_BEACON;
1580 return;
1581 }
1582
1583 if (unlikely(wl->beacon_templates_virgin)) {
1584 /* We never uploaded a beacon before.
1585 * Upload both templates now, but only mark one valid. */
1586 wl->beacon_templates_virgin = 0;
1587 b43_upload_beacon0(dev);
1588 b43_upload_beacon1(dev);
1589 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1590 cmd |= B43_MACCMD_BEACON0_VALID;
1591 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1592 } else {
1593 if (!beacon0_valid) {
1594 b43_upload_beacon0(dev);
1595 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1596 cmd |= B43_MACCMD_BEACON0_VALID;
1597 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1598 } else if (!beacon1_valid) {
1599 b43_upload_beacon1(dev);
1600 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1601 cmd |= B43_MACCMD_BEACON1_VALID;
1602 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1603 }
1604 }
1605 }
1606
1607 static void b43_beacon_update_trigger_work(struct work_struct *work)
1608 {
1609 struct b43_wl *wl = container_of(work, struct b43_wl,
1610 beacon_update_trigger);
1611 struct b43_wldev *dev;
1612
1613 mutex_lock(&wl->mutex);
1614 dev = wl->current_dev;
1615 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1616 spin_lock_irq(&wl->irq_lock);
1617 /* update beacon right away or defer to irq */
1618 handle_irq_beacon(dev);
1619 /* The handler might have updated the IRQ mask. */
1620 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1621 mmiowb();
1622 spin_unlock_irq(&wl->irq_lock);
1623 }
1624 mutex_unlock(&wl->mutex);
1625 }
1626
1627 /* Asynchronously update the packet templates in template RAM.
1628 * Locking: Requires wl->irq_lock to be locked. */
1629 static void b43_update_templates(struct b43_wl *wl)
1630 {
1631 struct sk_buff *beacon;
1632
1633 /* This is the top half of the ansynchronous beacon update.
1634 * The bottom half is the beacon IRQ.
1635 * Beacon update must be asynchronous to avoid sending an
1636 * invalid beacon. This can happen for example, if the firmware
1637 * transmits a beacon while we are updating it. */
1638
1639 /* We could modify the existing beacon and set the aid bit in
1640 * the TIM field, but that would probably require resizing and
1641 * moving of data within the beacon template.
1642 * Simply request a new beacon and let mac80211 do the hard work. */
1643 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1644 if (unlikely(!beacon))
1645 return;
1646
1647 if (wl->current_beacon)
1648 dev_kfree_skb_any(wl->current_beacon);
1649 wl->current_beacon = beacon;
1650 wl->beacon0_uploaded = 0;
1651 wl->beacon1_uploaded = 0;
1652 queue_work(wl->hw->workqueue, &wl->beacon_update_trigger);
1653 }
1654
1655 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1656 {
1657 b43_time_lock(dev);
1658 if (dev->dev->id.revision >= 3) {
1659 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1660 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1661 } else {
1662 b43_write16(dev, 0x606, (beacon_int >> 6));
1663 b43_write16(dev, 0x610, beacon_int);
1664 }
1665 b43_time_unlock(dev);
1666 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1667 }
1668
1669 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1670 {
1671 u16 reason;
1672
1673 /* Read the register that contains the reason code for the panic. */
1674 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1675 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1676
1677 switch (reason) {
1678 default:
1679 b43dbg(dev->wl, "The panic reason is unknown.\n");
1680 /* fallthrough */
1681 case B43_FWPANIC_DIE:
1682 /* Do not restart the controller or firmware.
1683 * The device is nonfunctional from now on.
1684 * Restarting would result in this panic to trigger again,
1685 * so we avoid that recursion. */
1686 break;
1687 case B43_FWPANIC_RESTART:
1688 b43_controller_restart(dev, "Microcode panic");
1689 break;
1690 }
1691 }
1692
1693 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1694 {
1695 unsigned int i, cnt;
1696 u16 reason, marker_id, marker_line;
1697 __le16 *buf;
1698
1699 /* The proprietary firmware doesn't have this IRQ. */
1700 if (!dev->fw.opensource)
1701 return;
1702
1703 /* Read the register that contains the reason code for this IRQ. */
1704 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1705
1706 switch (reason) {
1707 case B43_DEBUGIRQ_PANIC:
1708 b43_handle_firmware_panic(dev);
1709 break;
1710 case B43_DEBUGIRQ_DUMP_SHM:
1711 if (!B43_DEBUG)
1712 break; /* Only with driver debugging enabled. */
1713 buf = kmalloc(4096, GFP_ATOMIC);
1714 if (!buf) {
1715 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1716 goto out;
1717 }
1718 for (i = 0; i < 4096; i += 2) {
1719 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1720 buf[i / 2] = cpu_to_le16(tmp);
1721 }
1722 b43info(dev->wl, "Shared memory dump:\n");
1723 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1724 16, 2, buf, 4096, 1);
1725 kfree(buf);
1726 break;
1727 case B43_DEBUGIRQ_DUMP_REGS:
1728 if (!B43_DEBUG)
1729 break; /* Only with driver debugging enabled. */
1730 b43info(dev->wl, "Microcode register dump:\n");
1731 for (i = 0, cnt = 0; i < 64; i++) {
1732 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1733 if (cnt == 0)
1734 printk(KERN_INFO);
1735 printk("r%02u: 0x%04X ", i, tmp);
1736 cnt++;
1737 if (cnt == 6) {
1738 printk("\n");
1739 cnt = 0;
1740 }
1741 }
1742 printk("\n");
1743 break;
1744 case B43_DEBUGIRQ_MARKER:
1745 if (!B43_DEBUG)
1746 break; /* Only with driver debugging enabled. */
1747 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1748 B43_MARKER_ID_REG);
1749 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1750 B43_MARKER_LINE_REG);
1751 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1752 "at line number %u\n",
1753 marker_id, marker_line);
1754 break;
1755 default:
1756 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1757 reason);
1758 }
1759 out:
1760 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1761 b43_shm_write16(dev, B43_SHM_SCRATCH,
1762 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1763 }
1764
1765 /* Interrupt handler bottom-half */
1766 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1767 {
1768 u32 reason;
1769 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1770 u32 merged_dma_reason = 0;
1771 int i;
1772 unsigned long flags;
1773
1774 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1775
1776 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1777
1778 reason = dev->irq_reason;
1779 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1780 dma_reason[i] = dev->dma_reason[i];
1781 merged_dma_reason |= dma_reason[i];
1782 }
1783
1784 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1785 b43err(dev->wl, "MAC transmission error\n");
1786
1787 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1788 b43err(dev->wl, "PHY transmission error\n");
1789 rmb();
1790 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1791 atomic_set(&dev->phy.txerr_cnt,
1792 B43_PHY_TX_BADNESS_LIMIT);
1793 b43err(dev->wl, "Too many PHY TX errors, "
1794 "restarting the controller\n");
1795 b43_controller_restart(dev, "PHY TX errors");
1796 }
1797 }
1798
1799 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1800 B43_DMAIRQ_NONFATALMASK))) {
1801 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1802 b43err(dev->wl, "Fatal DMA error: "
1803 "0x%08X, 0x%08X, 0x%08X, "
1804 "0x%08X, 0x%08X, 0x%08X\n",
1805 dma_reason[0], dma_reason[1],
1806 dma_reason[2], dma_reason[3],
1807 dma_reason[4], dma_reason[5]);
1808 b43_controller_restart(dev, "DMA error");
1809 mmiowb();
1810 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1811 return;
1812 }
1813 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1814 b43err(dev->wl, "DMA error: "
1815 "0x%08X, 0x%08X, 0x%08X, "
1816 "0x%08X, 0x%08X, 0x%08X\n",
1817 dma_reason[0], dma_reason[1],
1818 dma_reason[2], dma_reason[3],
1819 dma_reason[4], dma_reason[5]);
1820 }
1821 }
1822
1823 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1824 handle_irq_ucode_debug(dev);
1825 if (reason & B43_IRQ_TBTT_INDI)
1826 handle_irq_tbtt_indication(dev);
1827 if (reason & B43_IRQ_ATIM_END)
1828 handle_irq_atim_end(dev);
1829 if (reason & B43_IRQ_BEACON)
1830 handle_irq_beacon(dev);
1831 if (reason & B43_IRQ_PMQ)
1832 handle_irq_pmq(dev);
1833 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1834 ;/* TODO */
1835 if (reason & B43_IRQ_NOISESAMPLE_OK)
1836 handle_irq_noise(dev);
1837
1838 /* Check the DMA reason registers for received data. */
1839 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1840 if (b43_using_pio_transfers(dev))
1841 b43_pio_rx(dev->pio.rx_queue);
1842 else
1843 b43_dma_rx(dev->dma.rx_ring);
1844 }
1845 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1846 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1847 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1848 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1849 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1850
1851 if (reason & B43_IRQ_TX_OK)
1852 handle_irq_transmit_status(dev);
1853
1854 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1855 mmiowb();
1856 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1857 }
1858
1859 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1860 {
1861 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1862
1863 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1864 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1865 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1866 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1867 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1868 /* Unused ring
1869 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1870 */
1871 }
1872
1873 /* Interrupt handler top-half */
1874 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1875 {
1876 irqreturn_t ret = IRQ_NONE;
1877 struct b43_wldev *dev = dev_id;
1878 u32 reason;
1879
1880 B43_WARN_ON(!dev);
1881
1882 spin_lock(&dev->wl->irq_lock);
1883
1884 if (unlikely(b43_status(dev) < B43_STAT_STARTED)) {
1885 /* This can only happen on shared IRQ lines. */
1886 goto out;
1887 }
1888 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1889 if (reason == 0xffffffff) /* shared IRQ */
1890 goto out;
1891 ret = IRQ_HANDLED;
1892 reason &= dev->irq_mask;
1893 if (!reason)
1894 goto out;
1895
1896 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1897 & 0x0001DC00;
1898 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1899 & 0x0000DC00;
1900 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1901 & 0x0000DC00;
1902 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1903 & 0x0001DC00;
1904 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1905 & 0x0000DC00;
1906 /* Unused ring
1907 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1908 & 0x0000DC00;
1909 */
1910
1911 b43_interrupt_ack(dev, reason);
1912 /* disable all IRQs. They are enabled again in the bottom half. */
1913 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
1914 /* save the reason code and call our bottom half. */
1915 dev->irq_reason = reason;
1916 tasklet_schedule(&dev->isr_tasklet);
1917 out:
1918 mmiowb();
1919 spin_unlock(&dev->wl->irq_lock);
1920
1921 return ret;
1922 }
1923
1924 void b43_do_release_fw(struct b43_firmware_file *fw)
1925 {
1926 release_firmware(fw->data);
1927 fw->data = NULL;
1928 fw->filename = NULL;
1929 }
1930
1931 static void b43_release_firmware(struct b43_wldev *dev)
1932 {
1933 b43_do_release_fw(&dev->fw.ucode);
1934 b43_do_release_fw(&dev->fw.pcm);
1935 b43_do_release_fw(&dev->fw.initvals);
1936 b43_do_release_fw(&dev->fw.initvals_band);
1937 }
1938
1939 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1940 {
1941 const char text[] =
1942 "You must go to " \
1943 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
1944 "and download the correct firmware for this driver version. " \
1945 "Please carefully read all instructions on this website.\n";
1946
1947 if (error)
1948 b43err(wl, text);
1949 else
1950 b43warn(wl, text);
1951 }
1952
1953 int b43_do_request_fw(struct b43_request_fw_context *ctx,
1954 const char *name,
1955 struct b43_firmware_file *fw)
1956 {
1957 const struct firmware *blob;
1958 struct b43_fw_header *hdr;
1959 u32 size;
1960 int err;
1961
1962 if (!name) {
1963 /* Don't fetch anything. Free possibly cached firmware. */
1964 /* FIXME: We should probably keep it anyway, to save some headache
1965 * on suspend/resume with multiband devices. */
1966 b43_do_release_fw(fw);
1967 return 0;
1968 }
1969 if (fw->filename) {
1970 if ((fw->type == ctx->req_type) &&
1971 (strcmp(fw->filename, name) == 0))
1972 return 0; /* Already have this fw. */
1973 /* Free the cached firmware first. */
1974 /* FIXME: We should probably do this later after we successfully
1975 * got the new fw. This could reduce headache with multiband devices.
1976 * We could also redesign this to cache the firmware for all possible
1977 * bands all the time. */
1978 b43_do_release_fw(fw);
1979 }
1980
1981 switch (ctx->req_type) {
1982 case B43_FWTYPE_PROPRIETARY:
1983 snprintf(ctx->fwname, sizeof(ctx->fwname),
1984 "b43%s/%s.fw",
1985 modparam_fwpostfix, name);
1986 break;
1987 case B43_FWTYPE_OPENSOURCE:
1988 snprintf(ctx->fwname, sizeof(ctx->fwname),
1989 "b43-open%s/%s.fw",
1990 modparam_fwpostfix, name);
1991 break;
1992 default:
1993 B43_WARN_ON(1);
1994 return -ENOSYS;
1995 }
1996 err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
1997 if (err == -ENOENT) {
1998 snprintf(ctx->errors[ctx->req_type],
1999 sizeof(ctx->errors[ctx->req_type]),
2000 "Firmware file \"%s\" not found\n", ctx->fwname);
2001 return err;
2002 } else if (err) {
2003 snprintf(ctx->errors[ctx->req_type],
2004 sizeof(ctx->errors[ctx->req_type]),
2005 "Firmware file \"%s\" request failed (err=%d)\n",
2006 ctx->fwname, err);
2007 return err;
2008 }
2009 if (blob->size < sizeof(struct b43_fw_header))
2010 goto err_format;
2011 hdr = (struct b43_fw_header *)(blob->data);
2012 switch (hdr->type) {
2013 case B43_FW_TYPE_UCODE:
2014 case B43_FW_TYPE_PCM:
2015 size = be32_to_cpu(hdr->size);
2016 if (size != blob->size - sizeof(struct b43_fw_header))
2017 goto err_format;
2018 /* fallthrough */
2019 case B43_FW_TYPE_IV:
2020 if (hdr->ver != 1)
2021 goto err_format;
2022 break;
2023 default:
2024 goto err_format;
2025 }
2026
2027 fw->data = blob;
2028 fw->filename = name;
2029 fw->type = ctx->req_type;
2030
2031 return 0;
2032
2033 err_format:
2034 snprintf(ctx->errors[ctx->req_type],
2035 sizeof(ctx->errors[ctx->req_type]),
2036 "Firmware file \"%s\" format error.\n", ctx->fwname);
2037 release_firmware(blob);
2038
2039 return -EPROTO;
2040 }
2041
2042 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2043 {
2044 struct b43_wldev *dev = ctx->dev;
2045 struct b43_firmware *fw = &ctx->dev->fw;
2046 const u8 rev = ctx->dev->dev->id.revision;
2047 const char *filename;
2048 u32 tmshigh;
2049 int err;
2050
2051 /* Get microcode */
2052 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2053 if ((rev >= 5) && (rev <= 10))
2054 filename = "ucode5";
2055 else if ((rev >= 11) && (rev <= 12))
2056 filename = "ucode11";
2057 else if (rev >= 13)
2058 filename = "ucode13";
2059 else
2060 goto err_no_ucode;
2061 err = b43_do_request_fw(ctx, filename, &fw->ucode);
2062 if (err)
2063 goto err_load;
2064
2065 /* Get PCM code */
2066 if ((rev >= 5) && (rev <= 10))
2067 filename = "pcm5";
2068 else if (rev >= 11)
2069 filename = NULL;
2070 else
2071 goto err_no_pcm;
2072 fw->pcm_request_failed = 0;
2073 err = b43_do_request_fw(ctx, filename, &fw->pcm);
2074 if (err == -ENOENT) {
2075 /* We did not find a PCM file? Not fatal, but
2076 * core rev <= 10 must do without hwcrypto then. */
2077 fw->pcm_request_failed = 1;
2078 } else if (err)
2079 goto err_load;
2080
2081 /* Get initvals */
2082 switch (dev->phy.type) {
2083 case B43_PHYTYPE_A:
2084 if ((rev >= 5) && (rev <= 10)) {
2085 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2086 filename = "a0g1initvals5";
2087 else
2088 filename = "a0g0initvals5";
2089 } else
2090 goto err_no_initvals;
2091 break;
2092 case B43_PHYTYPE_G:
2093 if ((rev >= 5) && (rev <= 10))
2094 filename = "b0g0initvals5";
2095 else if (rev >= 13)
2096 filename = "b0g0initvals13";
2097 else
2098 goto err_no_initvals;
2099 break;
2100 case B43_PHYTYPE_N:
2101 if ((rev >= 11) && (rev <= 12))
2102 filename = "n0initvals11";
2103 else
2104 goto err_no_initvals;
2105 break;
2106 default:
2107 goto err_no_initvals;
2108 }
2109 err = b43_do_request_fw(ctx, filename, &fw->initvals);
2110 if (err)
2111 goto err_load;
2112
2113 /* Get bandswitch initvals */
2114 switch (dev->phy.type) {
2115 case B43_PHYTYPE_A:
2116 if ((rev >= 5) && (rev <= 10)) {
2117 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2118 filename = "a0g1bsinitvals5";
2119 else
2120 filename = "a0g0bsinitvals5";
2121 } else if (rev >= 11)
2122 filename = NULL;
2123 else
2124 goto err_no_initvals;
2125 break;
2126 case B43_PHYTYPE_G:
2127 if ((rev >= 5) && (rev <= 10))
2128 filename = "b0g0bsinitvals5";
2129 else if (rev >= 11)
2130 filename = NULL;
2131 else
2132 goto err_no_initvals;
2133 break;
2134 case B43_PHYTYPE_N:
2135 if ((rev >= 11) && (rev <= 12))
2136 filename = "n0bsinitvals11";
2137 else
2138 goto err_no_initvals;
2139 break;
2140 default:
2141 goto err_no_initvals;
2142 }
2143 err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2144 if (err)
2145 goto err_load;
2146
2147 return 0;
2148
2149 err_no_ucode:
2150 err = ctx->fatal_failure = -EOPNOTSUPP;
2151 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2152 "is required for your device (wl-core rev %u)\n", rev);
2153 goto error;
2154
2155 err_no_pcm:
2156 err = ctx->fatal_failure = -EOPNOTSUPP;
2157 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2158 "is required for your device (wl-core rev %u)\n", rev);
2159 goto error;
2160
2161 err_no_initvals:
2162 err = ctx->fatal_failure = -EOPNOTSUPP;
2163 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2164 "is required for your device (wl-core rev %u)\n", rev);
2165 goto error;
2166
2167 err_load:
2168 /* We failed to load this firmware image. The error message
2169 * already is in ctx->errors. Return and let our caller decide
2170 * what to do. */
2171 goto error;
2172
2173 error:
2174 b43_release_firmware(dev);
2175 return err;
2176 }
2177
2178 static int b43_request_firmware(struct b43_wldev *dev)
2179 {
2180 struct b43_request_fw_context *ctx;
2181 unsigned int i;
2182 int err;
2183 const char *errmsg;
2184
2185 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2186 if (!ctx)
2187 return -ENOMEM;
2188 ctx->dev = dev;
2189
2190 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2191 err = b43_try_request_fw(ctx);
2192 if (!err)
2193 goto out; /* Successfully loaded it. */
2194 err = ctx->fatal_failure;
2195 if (err)
2196 goto out;
2197
2198 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2199 err = b43_try_request_fw(ctx);
2200 if (!err)
2201 goto out; /* Successfully loaded it. */
2202 err = ctx->fatal_failure;
2203 if (err)
2204 goto out;
2205
2206 /* Could not find a usable firmware. Print the errors. */
2207 for (i = 0; i < B43_NR_FWTYPES; i++) {
2208 errmsg = ctx->errors[i];
2209 if (strlen(errmsg))
2210 b43err(dev->wl, errmsg);
2211 }
2212 b43_print_fw_helptext(dev->wl, 1);
2213 err = -ENOENT;
2214
2215 out:
2216 kfree(ctx);
2217 return err;
2218 }
2219
2220 static int b43_upload_microcode(struct b43_wldev *dev)
2221 {
2222 const size_t hdr_len = sizeof(struct b43_fw_header);
2223 const __be32 *data;
2224 unsigned int i, len;
2225 u16 fwrev, fwpatch, fwdate, fwtime;
2226 u32 tmp, macctl;
2227 int err = 0;
2228
2229 /* Jump the microcode PSM to offset 0 */
2230 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2231 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2232 macctl |= B43_MACCTL_PSM_JMP0;
2233 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2234 /* Zero out all microcode PSM registers and shared memory. */
2235 for (i = 0; i < 64; i++)
2236 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2237 for (i = 0; i < 4096; i += 2)
2238 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2239
2240 /* Upload Microcode. */
2241 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2242 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2243 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2244 for (i = 0; i < len; i++) {
2245 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2246 udelay(10);
2247 }
2248
2249 if (dev->fw.pcm.data) {
2250 /* Upload PCM data. */
2251 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2252 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2253 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2254 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2255 /* No need for autoinc bit in SHM_HW */
2256 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2257 for (i = 0; i < len; i++) {
2258 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2259 udelay(10);
2260 }
2261 }
2262
2263 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2264
2265 /* Start the microcode PSM */
2266 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2267 macctl &= ~B43_MACCTL_PSM_JMP0;
2268 macctl |= B43_MACCTL_PSM_RUN;
2269 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2270
2271 /* Wait for the microcode to load and respond */
2272 i = 0;
2273 while (1) {
2274 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2275 if (tmp == B43_IRQ_MAC_SUSPENDED)
2276 break;
2277 i++;
2278 if (i >= 20) {
2279 b43err(dev->wl, "Microcode not responding\n");
2280 b43_print_fw_helptext(dev->wl, 1);
2281 err = -ENODEV;
2282 goto error;
2283 }
2284 msleep_interruptible(50);
2285 if (signal_pending(current)) {
2286 err = -EINTR;
2287 goto error;
2288 }
2289 }
2290 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2291
2292 /* Get and check the revisions. */
2293 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2294 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2295 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2296 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2297
2298 if (fwrev <= 0x128) {
2299 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2300 "binary drivers older than version 4.x is unsupported. "
2301 "You must upgrade your firmware files.\n");
2302 b43_print_fw_helptext(dev->wl, 1);
2303 err = -EOPNOTSUPP;
2304 goto error;
2305 }
2306 dev->fw.rev = fwrev;
2307 dev->fw.patch = fwpatch;
2308 dev->fw.opensource = (fwdate == 0xFFFF);
2309
2310 if (dev->fw.opensource) {
2311 /* Patchlevel info is encoded in the "time" field. */
2312 dev->fw.patch = fwtime;
2313 b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n",
2314 dev->fw.rev, dev->fw.patch,
2315 dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : "");
2316 } else {
2317 b43info(dev->wl, "Loading firmware version %u.%u "
2318 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2319 fwrev, fwpatch,
2320 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2321 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2322 if (dev->fw.pcm_request_failed) {
2323 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2324 "Hardware accelerated cryptography is disabled.\n");
2325 b43_print_fw_helptext(dev->wl, 0);
2326 }
2327 }
2328
2329 if (b43_is_old_txhdr_format(dev)) {
2330 /* We're over the deadline, but we keep support for old fw
2331 * until it turns out to be in major conflict with something new. */
2332 b43warn(dev->wl, "You are using an old firmware image. "
2333 "Support for old firmware will be removed soon "
2334 "(official deadline was July 2008).\n");
2335 b43_print_fw_helptext(dev->wl, 0);
2336 }
2337
2338 return 0;
2339
2340 error:
2341 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2342 macctl &= ~B43_MACCTL_PSM_RUN;
2343 macctl |= B43_MACCTL_PSM_JMP0;
2344 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2345
2346 return err;
2347 }
2348
2349 static int b43_write_initvals(struct b43_wldev *dev,
2350 const struct b43_iv *ivals,
2351 size_t count,
2352 size_t array_size)
2353 {
2354 const struct b43_iv *iv;
2355 u16 offset;
2356 size_t i;
2357 bool bit32;
2358
2359 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2360 iv = ivals;
2361 for (i = 0; i < count; i++) {
2362 if (array_size < sizeof(iv->offset_size))
2363 goto err_format;
2364 array_size -= sizeof(iv->offset_size);
2365 offset = be16_to_cpu(iv->offset_size);
2366 bit32 = !!(offset & B43_IV_32BIT);
2367 offset &= B43_IV_OFFSET_MASK;
2368 if (offset >= 0x1000)
2369 goto err_format;
2370 if (bit32) {
2371 u32 value;
2372
2373 if (array_size < sizeof(iv->data.d32))
2374 goto err_format;
2375 array_size -= sizeof(iv->data.d32);
2376
2377 value = get_unaligned_be32(&iv->data.d32);
2378 b43_write32(dev, offset, value);
2379
2380 iv = (const struct b43_iv *)((const uint8_t *)iv +
2381 sizeof(__be16) +
2382 sizeof(__be32));
2383 } else {
2384 u16 value;
2385
2386 if (array_size < sizeof(iv->data.d16))
2387 goto err_format;
2388 array_size -= sizeof(iv->data.d16);
2389
2390 value = be16_to_cpu(iv->data.d16);
2391 b43_write16(dev, offset, value);
2392
2393 iv = (const struct b43_iv *)((const uint8_t *)iv +
2394 sizeof(__be16) +
2395 sizeof(__be16));
2396 }
2397 }
2398 if (array_size)
2399 goto err_format;
2400
2401 return 0;
2402
2403 err_format:
2404 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2405 b43_print_fw_helptext(dev->wl, 1);
2406
2407 return -EPROTO;
2408 }
2409
2410 static int b43_upload_initvals(struct b43_wldev *dev)
2411 {
2412 const size_t hdr_len = sizeof(struct b43_fw_header);
2413 const struct b43_fw_header *hdr;
2414 struct b43_firmware *fw = &dev->fw;
2415 const struct b43_iv *ivals;
2416 size_t count;
2417 int err;
2418
2419 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2420 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2421 count = be32_to_cpu(hdr->size);
2422 err = b43_write_initvals(dev, ivals, count,
2423 fw->initvals.data->size - hdr_len);
2424 if (err)
2425 goto out;
2426 if (fw->initvals_band.data) {
2427 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2428 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2429 count = be32_to_cpu(hdr->size);
2430 err = b43_write_initvals(dev, ivals, count,
2431 fw->initvals_band.data->size - hdr_len);
2432 if (err)
2433 goto out;
2434 }
2435 out:
2436
2437 return err;
2438 }
2439
2440 /* Initialize the GPIOs
2441 * http://bcm-specs.sipsolutions.net/GPIO
2442 */
2443 static int b43_gpio_init(struct b43_wldev *dev)
2444 {
2445 struct ssb_bus *bus = dev->dev->bus;
2446 struct ssb_device *gpiodev, *pcidev = NULL;
2447 u32 mask, set;
2448
2449 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2450 & ~B43_MACCTL_GPOUTSMSK);
2451
2452 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2453 | 0x000F);
2454
2455 mask = 0x0000001F;
2456 set = 0x0000000F;
2457 if (dev->dev->bus->chip_id == 0x4301) {
2458 mask |= 0x0060;
2459 set |= 0x0060;
2460 }
2461 if (0 /* FIXME: conditional unknown */ ) {
2462 b43_write16(dev, B43_MMIO_GPIO_MASK,
2463 b43_read16(dev, B43_MMIO_GPIO_MASK)
2464 | 0x0100);
2465 mask |= 0x0180;
2466 set |= 0x0180;
2467 }
2468 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2469 b43_write16(dev, B43_MMIO_GPIO_MASK,
2470 b43_read16(dev, B43_MMIO_GPIO_MASK)
2471 | 0x0200);
2472 mask |= 0x0200;
2473 set |= 0x0200;
2474 }
2475 if (dev->dev->id.revision >= 2)
2476 mask |= 0x0010; /* FIXME: This is redundant. */
2477
2478 #ifdef CONFIG_SSB_DRIVER_PCICORE
2479 pcidev = bus->pcicore.dev;
2480 #endif
2481 gpiodev = bus->chipco.dev ? : pcidev;
2482 if (!gpiodev)
2483 return 0;
2484 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2485 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2486 & mask) | set);
2487
2488 return 0;
2489 }
2490
2491 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2492 static void b43_gpio_cleanup(struct b43_wldev *dev)
2493 {
2494 struct ssb_bus *bus = dev->dev->bus;
2495 struct ssb_device *gpiodev, *pcidev = NULL;
2496
2497 #ifdef CONFIG_SSB_DRIVER_PCICORE
2498 pcidev = bus->pcicore.dev;
2499 #endif
2500 gpiodev = bus->chipco.dev ? : pcidev;
2501 if (!gpiodev)
2502 return;
2503 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2504 }
2505
2506 /* http://bcm-specs.sipsolutions.net/EnableMac */
2507 void b43_mac_enable(struct b43_wldev *dev)
2508 {
2509 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2510 u16 fwstate;
2511
2512 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2513 B43_SHM_SH_UCODESTAT);
2514 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2515 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2516 b43err(dev->wl, "b43_mac_enable(): The firmware "
2517 "should be suspended, but current state is %u\n",
2518 fwstate);
2519 }
2520 }
2521
2522 dev->mac_suspended--;
2523 B43_WARN_ON(dev->mac_suspended < 0);
2524 if (dev->mac_suspended == 0) {
2525 b43_write32(dev, B43_MMIO_MACCTL,
2526 b43_read32(dev, B43_MMIO_MACCTL)
2527 | B43_MACCTL_ENABLED);
2528 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2529 B43_IRQ_MAC_SUSPENDED);
2530 /* Commit writes */
2531 b43_read32(dev, B43_MMIO_MACCTL);
2532 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2533 b43_power_saving_ctl_bits(dev, 0);
2534 }
2535 }
2536
2537 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2538 void b43_mac_suspend(struct b43_wldev *dev)
2539 {
2540 int i;
2541 u32 tmp;
2542
2543 might_sleep();
2544 B43_WARN_ON(dev->mac_suspended < 0);
2545
2546 if (dev->mac_suspended == 0) {
2547 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2548 b43_write32(dev, B43_MMIO_MACCTL,
2549 b43_read32(dev, B43_MMIO_MACCTL)
2550 & ~B43_MACCTL_ENABLED);
2551 /* force pci to flush the write */
2552 b43_read32(dev, B43_MMIO_MACCTL);
2553 for (i = 35; i; i--) {
2554 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2555 if (tmp & B43_IRQ_MAC_SUSPENDED)
2556 goto out;
2557 udelay(10);
2558 }
2559 /* Hm, it seems this will take some time. Use msleep(). */
2560 for (i = 40; i; i--) {
2561 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2562 if (tmp & B43_IRQ_MAC_SUSPENDED)
2563 goto out;
2564 msleep(1);
2565 }
2566 b43err(dev->wl, "MAC suspend failed\n");
2567 }
2568 out:
2569 dev->mac_suspended++;
2570 }
2571
2572 static void b43_adjust_opmode(struct b43_wldev *dev)
2573 {
2574 struct b43_wl *wl = dev->wl;
2575 u32 ctl;
2576 u16 cfp_pretbtt;
2577
2578 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2579 /* Reset status to STA infrastructure mode. */
2580 ctl &= ~B43_MACCTL_AP;
2581 ctl &= ~B43_MACCTL_KEEP_CTL;
2582 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2583 ctl &= ~B43_MACCTL_KEEP_BAD;
2584 ctl &= ~B43_MACCTL_PROMISC;
2585 ctl &= ~B43_MACCTL_BEACPROMISC;
2586 ctl |= B43_MACCTL_INFRA;
2587
2588 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2589 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2590 ctl |= B43_MACCTL_AP;
2591 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2592 ctl &= ~B43_MACCTL_INFRA;
2593
2594 if (wl->filter_flags & FIF_CONTROL)
2595 ctl |= B43_MACCTL_KEEP_CTL;
2596 if (wl->filter_flags & FIF_FCSFAIL)
2597 ctl |= B43_MACCTL_KEEP_BAD;
2598 if (wl->filter_flags & FIF_PLCPFAIL)
2599 ctl |= B43_MACCTL_KEEP_BADPLCP;
2600 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2601 ctl |= B43_MACCTL_PROMISC;
2602 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2603 ctl |= B43_MACCTL_BEACPROMISC;
2604
2605 /* Workaround: On old hardware the HW-MAC-address-filter
2606 * doesn't work properly, so always run promisc in filter
2607 * it in software. */
2608 if (dev->dev->id.revision <= 4)
2609 ctl |= B43_MACCTL_PROMISC;
2610
2611 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2612
2613 cfp_pretbtt = 2;
2614 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2615 if (dev->dev->bus->chip_id == 0x4306 &&
2616 dev->dev->bus->chip_rev == 3)
2617 cfp_pretbtt = 100;
2618 else
2619 cfp_pretbtt = 50;
2620 }
2621 b43_write16(dev, 0x612, cfp_pretbtt);
2622 }
2623
2624 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2625 {
2626 u16 offset;
2627
2628 if (is_ofdm) {
2629 offset = 0x480;
2630 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2631 } else {
2632 offset = 0x4C0;
2633 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2634 }
2635 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2636 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2637 }
2638
2639 static void b43_rate_memory_init(struct b43_wldev *dev)
2640 {
2641 switch (dev->phy.type) {
2642 case B43_PHYTYPE_A:
2643 case B43_PHYTYPE_G:
2644 case B43_PHYTYPE_N:
2645 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2646 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2647 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2648 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2649 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2650 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2651 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2652 if (dev->phy.type == B43_PHYTYPE_A)
2653 break;
2654 /* fallthrough */
2655 case B43_PHYTYPE_B:
2656 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2657 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2658 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2659 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2660 break;
2661 default:
2662 B43_WARN_ON(1);
2663 }
2664 }
2665
2666 /* Set the default values for the PHY TX Control Words. */
2667 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2668 {
2669 u16 ctl = 0;
2670
2671 ctl |= B43_TXH_PHY_ENC_CCK;
2672 ctl |= B43_TXH_PHY_ANT01AUTO;
2673 ctl |= B43_TXH_PHY_TXPWR;
2674
2675 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2676 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2677 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2678 }
2679
2680 /* Set the TX-Antenna for management frames sent by firmware. */
2681 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2682 {
2683 u16 ant;
2684 u16 tmp;
2685
2686 ant = b43_antenna_to_phyctl(antenna);
2687
2688 /* For ACK/CTS */
2689 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2690 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2691 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2692 /* For Probe Resposes */
2693 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2694 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2695 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2696 }
2697
2698 /* This is the opposite of b43_chip_init() */
2699 static void b43_chip_exit(struct b43_wldev *dev)
2700 {
2701 b43_phy_exit(dev);
2702 b43_gpio_cleanup(dev);
2703 /* firmware is released later */
2704 }
2705
2706 /* Initialize the chip
2707 * http://bcm-specs.sipsolutions.net/ChipInit
2708 */
2709 static int b43_chip_init(struct b43_wldev *dev)
2710 {
2711 struct b43_phy *phy = &dev->phy;
2712 int err;
2713 u32 value32, macctl;
2714 u16 value16;
2715
2716 /* Initialize the MAC control */
2717 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2718 if (dev->phy.gmode)
2719 macctl |= B43_MACCTL_GMODE;
2720 macctl |= B43_MACCTL_INFRA;
2721 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2722
2723 err = b43_request_firmware(dev);
2724 if (err)
2725 goto out;
2726 err = b43_upload_microcode(dev);
2727 if (err)
2728 goto out; /* firmware is released later */
2729
2730 err = b43_gpio_init(dev);
2731 if (err)
2732 goto out; /* firmware is released later */
2733
2734 err = b43_upload_initvals(dev);
2735 if (err)
2736 goto err_gpio_clean;
2737
2738 /* Turn the Analog on and initialize the PHY. */
2739 phy->ops->switch_analog(dev, 1);
2740 err = b43_phy_init(dev);
2741 if (err)
2742 goto err_gpio_clean;
2743
2744 /* Disable Interference Mitigation. */
2745 if (phy->ops->interf_mitigation)
2746 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2747
2748 /* Select the antennae */
2749 if (phy->ops->set_rx_antenna)
2750 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2751 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2752
2753 if (phy->type == B43_PHYTYPE_B) {
2754 value16 = b43_read16(dev, 0x005E);
2755 value16 |= 0x0004;
2756 b43_write16(dev, 0x005E, value16);
2757 }
2758 b43_write32(dev, 0x0100, 0x01000000);
2759 if (dev->dev->id.revision < 5)
2760 b43_write32(dev, 0x010C, 0x01000000);
2761
2762 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2763 & ~B43_MACCTL_INFRA);
2764 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2765 | B43_MACCTL_INFRA);
2766
2767 /* Probe Response Timeout value */
2768 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2769 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2770
2771 /* Initially set the wireless operation mode. */
2772 b43_adjust_opmode(dev);
2773
2774 if (dev->dev->id.revision < 3) {
2775 b43_write16(dev, 0x060E, 0x0000);
2776 b43_write16(dev, 0x0610, 0x8000);
2777 b43_write16(dev, 0x0604, 0x0000);
2778 b43_write16(dev, 0x0606, 0x0200);
2779 } else {
2780 b43_write32(dev, 0x0188, 0x80000000);
2781 b43_write32(dev, 0x018C, 0x02000000);
2782 }
2783 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2784 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2785 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2786 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2787 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2788 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2789 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2790
2791 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2792 value32 |= 0x00100000;
2793 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2794
2795 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2796 dev->dev->bus->chipco.fast_pwrup_delay);
2797
2798 err = 0;
2799 b43dbg(dev->wl, "Chip initialized\n");
2800 out:
2801 return err;
2802
2803 err_gpio_clean:
2804 b43_gpio_cleanup(dev);
2805 return err;
2806 }
2807
2808 static void b43_periodic_every60sec(struct b43_wldev *dev)
2809 {
2810 const struct b43_phy_operations *ops = dev->phy.ops;
2811
2812 if (ops->pwork_60sec)
2813 ops->pwork_60sec(dev);
2814
2815 /* Force check the TX power emission now. */
2816 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2817 }
2818
2819 static void b43_periodic_every30sec(struct b43_wldev *dev)
2820 {
2821 /* Update device statistics. */
2822 b43_calculate_link_quality(dev);
2823 }
2824
2825 static void b43_periodic_every15sec(struct b43_wldev *dev)
2826 {
2827 struct b43_phy *phy = &dev->phy;
2828 u16 wdr;
2829
2830 if (dev->fw.opensource) {
2831 /* Check if the firmware is still alive.
2832 * It will reset the watchdog counter to 0 in its idle loop. */
2833 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2834 if (unlikely(wdr)) {
2835 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2836 b43_controller_restart(dev, "Firmware watchdog");
2837 return;
2838 } else {
2839 b43_shm_write16(dev, B43_SHM_SCRATCH,
2840 B43_WATCHDOG_REG, 1);
2841 }
2842 }
2843
2844 if (phy->ops->pwork_15sec)
2845 phy->ops->pwork_15sec(dev);
2846
2847 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2848 wmb();
2849 }
2850
2851 static void do_periodic_work(struct b43_wldev *dev)
2852 {
2853 unsigned int state;
2854
2855 state = dev->periodic_state;
2856 if (state % 4 == 0)
2857 b43_periodic_every60sec(dev);
2858 if (state % 2 == 0)
2859 b43_periodic_every30sec(dev);
2860 b43_periodic_every15sec(dev);
2861 }
2862
2863 /* Periodic work locking policy:
2864 * The whole periodic work handler is protected by
2865 * wl->mutex. If another lock is needed somewhere in the
2866 * pwork callchain, it's aquired in-place, where it's needed.
2867 */
2868 static void b43_periodic_work_handler(struct work_struct *work)
2869 {
2870 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2871 periodic_work.work);
2872 struct b43_wl *wl = dev->wl;
2873 unsigned long delay;
2874
2875 mutex_lock(&wl->mutex);
2876
2877 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2878 goto out;
2879 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2880 goto out_requeue;
2881
2882 do_periodic_work(dev);
2883
2884 dev->periodic_state++;
2885 out_requeue:
2886 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2887 delay = msecs_to_jiffies(50);
2888 else
2889 delay = round_jiffies_relative(HZ * 15);
2890 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2891 out:
2892 mutex_unlock(&wl->mutex);
2893 }
2894
2895 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2896 {
2897 struct delayed_work *work = &dev->periodic_work;
2898
2899 dev->periodic_state = 0;
2900 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2901 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2902 }
2903
2904 /* Check if communication with the device works correctly. */
2905 static int b43_validate_chipaccess(struct b43_wldev *dev)
2906 {
2907 u32 v, backup;
2908
2909 backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2910
2911 /* Check for read/write and endianness problems. */
2912 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2913 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2914 goto error;
2915 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2916 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2917 goto error;
2918
2919 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2920
2921 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2922 /* The 32bit register shadows the two 16bit registers
2923 * with update sideeffects. Validate this. */
2924 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2925 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2926 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2927 goto error;
2928 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2929 goto error;
2930 }
2931 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2932
2933 v = b43_read32(dev, B43_MMIO_MACCTL);
2934 v |= B43_MACCTL_GMODE;
2935 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2936 goto error;
2937
2938 return 0;
2939 error:
2940 b43err(dev->wl, "Failed to validate the chipaccess\n");
2941 return -ENODEV;
2942 }
2943
2944 static void b43_security_init(struct b43_wldev *dev)
2945 {
2946 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2947 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2948 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2949 /* KTP is a word address, but we address SHM bytewise.
2950 * So multiply by two.
2951 */
2952 dev->ktp *= 2;
2953 if (dev->dev->id.revision >= 5) {
2954 /* Number of RCMTA address slots */
2955 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2956 }
2957 b43_clear_keys(dev);
2958 }
2959
2960 #ifdef CONFIG_B43_HWRNG
2961 static int b43_rng_read(struct hwrng *rng, u32 *data)
2962 {
2963 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2964 unsigned long flags;
2965
2966 /* Don't take wl->mutex here, as it could deadlock with
2967 * hwrng internal locking. It's not needed to take
2968 * wl->mutex here, anyway. */
2969
2970 spin_lock_irqsave(&wl->irq_lock, flags);
2971 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2972 spin_unlock_irqrestore(&wl->irq_lock, flags);
2973
2974 return (sizeof(u16));
2975 }
2976 #endif /* CONFIG_B43_HWRNG */
2977
2978 static void b43_rng_exit(struct b43_wl *wl)
2979 {
2980 #ifdef CONFIG_B43_HWRNG
2981 if (wl->rng_initialized)
2982 hwrng_unregister(&wl->rng);
2983 #endif /* CONFIG_B43_HWRNG */
2984 }
2985
2986 static int b43_rng_init(struct b43_wl *wl)
2987 {
2988 int err = 0;
2989
2990 #ifdef CONFIG_B43_HWRNG
2991 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2992 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2993 wl->rng.name = wl->rng_name;
2994 wl->rng.data_read = b43_rng_read;
2995 wl->rng.priv = (unsigned long)wl;
2996 wl->rng_initialized = 1;
2997 err = hwrng_register(&wl->rng);
2998 if (err) {
2999 wl->rng_initialized = 0;
3000 b43err(wl, "Failed to register the random "
3001 "number generator (%d)\n", err);
3002 }
3003 #endif /* CONFIG_B43_HWRNG */
3004
3005 return err;
3006 }
3007
3008 static int b43_op_tx(struct ieee80211_hw *hw,
3009 struct sk_buff *skb)
3010 {
3011 struct b43_wl *wl = hw_to_b43_wl(hw);
3012 struct b43_wldev *dev = wl->current_dev;
3013 unsigned long flags;
3014 int err;
3015
3016 if (unlikely(skb->len < 2 + 2 + 6)) {
3017 /* Too short, this can't be a valid frame. */
3018 goto drop_packet;
3019 }
3020 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3021 if (unlikely(!dev))
3022 goto drop_packet;
3023
3024 /* Transmissions on seperate queues can run concurrently. */
3025 read_lock_irqsave(&wl->tx_lock, flags);
3026
3027 err = -ENODEV;
3028 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3029 if (b43_using_pio_transfers(dev))
3030 err = b43_pio_tx(dev, skb);
3031 else
3032 err = b43_dma_tx(dev, skb);
3033 }
3034
3035 read_unlock_irqrestore(&wl->tx_lock, flags);
3036
3037 if (unlikely(err))
3038 goto drop_packet;
3039 return NETDEV_TX_OK;
3040
3041 drop_packet:
3042 /* We can not transmit this packet. Drop it. */
3043 dev_kfree_skb_any(skb);
3044 return NETDEV_TX_OK;
3045 }
3046
3047 /* Locking: wl->irq_lock */
3048 static void b43_qos_params_upload(struct b43_wldev *dev,
3049 const struct ieee80211_tx_queue_params *p,
3050 u16 shm_offset)
3051 {
3052 u16 params[B43_NR_QOSPARAMS];
3053 int bslots, tmp;
3054 unsigned int i;
3055
3056 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3057
3058 memset(&params, 0, sizeof(params));
3059
3060 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3061 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3062 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3063 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3064 params[B43_QOSPARAM_AIFS] = p->aifs;
3065 params[B43_QOSPARAM_BSLOTS] = bslots;
3066 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3067
3068 for (i = 0; i < ARRAY_SIZE(params); i++) {
3069 if (i == B43_QOSPARAM_STATUS) {
3070 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3071 shm_offset + (i * 2));
3072 /* Mark the parameters as updated. */
3073 tmp |= 0x100;
3074 b43_shm_write16(dev, B43_SHM_SHARED,
3075 shm_offset + (i * 2),
3076 tmp);
3077 } else {
3078 b43_shm_write16(dev, B43_SHM_SHARED,
3079 shm_offset + (i * 2),
3080 params[i]);
3081 }
3082 }
3083 }
3084
3085 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3086 static const u16 b43_qos_shm_offsets[] = {
3087 /* [mac80211-queue-nr] = SHM_OFFSET, */
3088 [0] = B43_QOS_VOICE,
3089 [1] = B43_QOS_VIDEO,
3090 [2] = B43_QOS_BESTEFFORT,
3091 [3] = B43_QOS_BACKGROUND,
3092 };
3093
3094 /* Update all QOS parameters in hardware. */
3095 static void b43_qos_upload_all(struct b43_wldev *dev)
3096 {
3097 struct b43_wl *wl = dev->wl;
3098 struct b43_qos_params *params;
3099 unsigned int i;
3100
3101 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3102 ARRAY_SIZE(wl->qos_params));
3103
3104 b43_mac_suspend(dev);
3105 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3106 params = &(wl->qos_params[i]);
3107 b43_qos_params_upload(dev, &(params->p),
3108 b43_qos_shm_offsets[i]);
3109 }
3110 b43_mac_enable(dev);
3111 }
3112
3113 static void b43_qos_clear(struct b43_wl *wl)
3114 {
3115 struct b43_qos_params *params;
3116 unsigned int i;
3117
3118 /* Initialize QoS parameters to sane defaults. */
3119
3120 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3121 ARRAY_SIZE(wl->qos_params));
3122
3123 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3124 params = &(wl->qos_params[i]);
3125
3126 switch (b43_qos_shm_offsets[i]) {
3127 case B43_QOS_VOICE:
3128 params->p.txop = 0;
3129 params->p.aifs = 2;
3130 params->p.cw_min = 0x0001;
3131 params->p.cw_max = 0x0001;
3132 break;
3133 case B43_QOS_VIDEO:
3134 params->p.txop = 0;
3135 params->p.aifs = 2;
3136 params->p.cw_min = 0x0001;
3137 params->p.cw_max = 0x0001;
3138 break;
3139 case B43_QOS_BESTEFFORT:
3140 params->p.txop = 0;
3141 params->p.aifs = 3;
3142 params->p.cw_min = 0x0001;
3143 params->p.cw_max = 0x03FF;
3144 break;
3145 case B43_QOS_BACKGROUND:
3146 params->p.txop = 0;
3147 params->p.aifs = 7;
3148 params->p.cw_min = 0x0001;
3149 params->p.cw_max = 0x03FF;
3150 break;
3151 default:
3152 B43_WARN_ON(1);
3153 }
3154 }
3155 }
3156
3157 /* Initialize the core's QOS capabilities */
3158 static void b43_qos_init(struct b43_wldev *dev)
3159 {
3160 /* Upload the current QOS parameters. */
3161 b43_qos_upload_all(dev);
3162
3163 /* Enable QOS support. */
3164 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3165 b43_write16(dev, B43_MMIO_IFSCTL,
3166 b43_read16(dev, B43_MMIO_IFSCTL)
3167 | B43_MMIO_IFSCTL_USE_EDCF);
3168 }
3169
3170 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3171 const struct ieee80211_tx_queue_params *params)
3172 {
3173 struct b43_wl *wl = hw_to_b43_wl(hw);
3174 struct b43_wldev *dev;
3175 unsigned int queue = (unsigned int)_queue;
3176 int err = -ENODEV;
3177
3178 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3179 /* Queue not available or don't support setting
3180 * params on this queue. Return success to not
3181 * confuse mac80211. */
3182 return 0;
3183 }
3184 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3185 ARRAY_SIZE(wl->qos_params));
3186
3187 mutex_lock(&wl->mutex);
3188 dev = wl->current_dev;
3189 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3190 goto out_unlock;
3191
3192 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3193 b43_mac_suspend(dev);
3194 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3195 b43_qos_shm_offsets[queue]);
3196 b43_mac_enable(dev);
3197 err = 0;
3198
3199 out_unlock:
3200 mutex_unlock(&wl->mutex);
3201
3202 return err;
3203 }
3204
3205 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3206 struct ieee80211_tx_queue_stats *stats)
3207 {
3208 struct b43_wl *wl = hw_to_b43_wl(hw);
3209 struct b43_wldev *dev = wl->current_dev;
3210 unsigned long flags;
3211 int err = -ENODEV;
3212
3213 if (!dev)
3214 goto out;
3215 spin_lock_irqsave(&wl->irq_lock, flags);
3216 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3217 if (b43_using_pio_transfers(dev))
3218 b43_pio_get_tx_stats(dev, stats);
3219 else
3220 b43_dma_get_tx_stats(dev, stats);
3221 err = 0;
3222 }
3223 spin_unlock_irqrestore(&wl->irq_lock, flags);
3224 out:
3225 return err;
3226 }
3227
3228 static int b43_op_get_stats(struct ieee80211_hw *hw,
3229 struct ieee80211_low_level_stats *stats)
3230 {
3231 struct b43_wl *wl = hw_to_b43_wl(hw);
3232 unsigned long flags;
3233
3234 spin_lock_irqsave(&wl->irq_lock, flags);
3235 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3236 spin_unlock_irqrestore(&wl->irq_lock, flags);
3237
3238 return 0;
3239 }
3240
3241 static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
3242 {
3243 struct b43_wl *wl = hw_to_b43_wl(hw);
3244 struct b43_wldev *dev;
3245 u64 tsf;
3246
3247 mutex_lock(&wl->mutex);
3248 spin_lock_irq(&wl->irq_lock);
3249 dev = wl->current_dev;
3250
3251 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3252 b43_tsf_read(dev, &tsf);
3253 else
3254 tsf = 0;
3255
3256 spin_unlock_irq(&wl->irq_lock);
3257 mutex_unlock(&wl->mutex);
3258
3259 return tsf;
3260 }
3261
3262 static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3263 {
3264 struct b43_wl *wl = hw_to_b43_wl(hw);
3265 struct b43_wldev *dev;
3266
3267 mutex_lock(&wl->mutex);
3268 spin_lock_irq(&wl->irq_lock);
3269 dev = wl->current_dev;
3270
3271 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3272 b43_tsf_write(dev, tsf);
3273
3274 spin_unlock_irq(&wl->irq_lock);
3275 mutex_unlock(&wl->mutex);
3276 }
3277
3278 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3279 {
3280 struct ssb_device *sdev = dev->dev;
3281 u32 tmslow;
3282
3283 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3284 tmslow &= ~B43_TMSLOW_GMODE;
3285 tmslow |= B43_TMSLOW_PHYRESET;
3286 tmslow |= SSB_TMSLOW_FGC;
3287 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3288 msleep(1);
3289
3290 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3291 tmslow &= ~SSB_TMSLOW_FGC;
3292 tmslow |= B43_TMSLOW_PHYRESET;
3293 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3294 msleep(1);
3295 }
3296
3297 static const char *band_to_string(enum ieee80211_band band)
3298 {
3299 switch (band) {
3300 case IEEE80211_BAND_5GHZ:
3301 return "5";
3302 case IEEE80211_BAND_2GHZ:
3303 return "2.4";
3304 default:
3305 break;
3306 }
3307 B43_WARN_ON(1);
3308 return "";
3309 }
3310
3311 /* Expects wl->mutex locked */
3312 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3313 {
3314 struct b43_wldev *up_dev = NULL;
3315 struct b43_wldev *down_dev;
3316 struct b43_wldev *d;
3317 int err;
3318 bool uninitialized_var(gmode);
3319 int prev_status;
3320
3321 /* Find a device and PHY which supports the band. */
3322 list_for_each_entry(d, &wl->devlist, list) {
3323 switch (chan->band) {
3324 case IEEE80211_BAND_5GHZ:
3325 if (d->phy.supports_5ghz) {
3326 up_dev = d;
3327 gmode = 0;
3328 }
3329 break;
3330 case IEEE80211_BAND_2GHZ:
3331 if (d->phy.supports_2ghz) {
3332 up_dev = d;
3333 gmode = 1;
3334 }
3335 break;
3336 default:
3337 B43_WARN_ON(1);
3338 return -EINVAL;
3339 }
3340 if (up_dev)
3341 break;
3342 }
3343 if (!up_dev) {
3344 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3345 band_to_string(chan->band));
3346 return -ENODEV;
3347 }
3348 if ((up_dev == wl->current_dev) &&
3349 (!!wl->current_dev->phy.gmode == !!gmode)) {
3350 /* This device is already running. */
3351 return 0;
3352 }
3353 b43dbg(wl, "Switching to %s-GHz band\n",
3354 band_to_string(chan->band));
3355 down_dev = wl->current_dev;
3356
3357 prev_status = b43_status(down_dev);
3358 /* Shutdown the currently running core. */
3359 if (prev_status >= B43_STAT_STARTED)
3360 b43_wireless_core_stop(down_dev);
3361 if (prev_status >= B43_STAT_INITIALIZED)
3362 b43_wireless_core_exit(down_dev);
3363
3364 if (down_dev != up_dev) {
3365 /* We switch to a different core, so we put PHY into
3366 * RESET on the old core. */
3367 b43_put_phy_into_reset(down_dev);
3368 }
3369
3370 /* Now start the new core. */
3371 up_dev->phy.gmode = gmode;
3372 if (prev_status >= B43_STAT_INITIALIZED) {
3373 err = b43_wireless_core_init(up_dev);
3374 if (err) {
3375 b43err(wl, "Fatal: Could not initialize device for "
3376 "selected %s-GHz band\n",
3377 band_to_string(chan->band));
3378 goto init_failure;
3379 }
3380 }
3381 if (prev_status >= B43_STAT_STARTED) {
3382 err = b43_wireless_core_start(up_dev);
3383 if (err) {
3384 b43err(wl, "Fatal: Coult not start device for "
3385 "selected %s-GHz band\n",
3386 band_to_string(chan->band));
3387 b43_wireless_core_exit(up_dev);
3388 goto init_failure;
3389 }
3390 }
3391 B43_WARN_ON(b43_status(up_dev) != prev_status);
3392
3393 wl->current_dev = up_dev;
3394
3395 return 0;
3396 init_failure:
3397 /* Whoops, failed to init the new core. No core is operating now. */
3398 wl->current_dev = NULL;
3399 return err;
3400 }
3401
3402 /* Write the short and long frame retry limit values. */
3403 static void b43_set_retry_limits(struct b43_wldev *dev,
3404 unsigned int short_retry,
3405 unsigned int long_retry)
3406 {
3407 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3408 * the chip-internal counter. */
3409 short_retry = min(short_retry, (unsigned int)0xF);
3410 long_retry = min(long_retry, (unsigned int)0xF);
3411
3412 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3413 short_retry);
3414 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3415 long_retry);
3416 }
3417
3418 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3419 {
3420 struct b43_wl *wl = hw_to_b43_wl(hw);
3421 struct b43_wldev *dev;
3422 struct b43_phy *phy;
3423 struct ieee80211_conf *conf = &hw->conf;
3424 unsigned long flags;
3425 int antenna;
3426 int err = 0;
3427
3428 mutex_lock(&wl->mutex);
3429
3430 /* Switch the band (if necessary). This might change the active core. */
3431 err = b43_switch_band(wl, conf->channel);
3432 if (err)
3433 goto out_unlock_mutex;
3434 dev = wl->current_dev;
3435 phy = &dev->phy;
3436
3437 b43_mac_suspend(dev);
3438
3439 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3440 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3441 conf->long_frame_max_tx_count);
3442 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3443 if (!changed)
3444 goto out_mac_enable;
3445
3446 /* Switch to the requested channel.
3447 * The firmware takes care of races with the TX handler. */
3448 if (conf->channel->hw_value != phy->channel)
3449 b43_switch_channel(dev, conf->channel->hw_value);
3450
3451 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3452
3453 /* Adjust the desired TX power level. */
3454 if (conf->power_level != 0) {
3455 spin_lock_irqsave(&wl->irq_lock, flags);
3456 if (conf->power_level != phy->desired_txpower) {
3457 phy->desired_txpower = conf->power_level;
3458 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3459 B43_TXPWR_IGNORE_TSSI);
3460 }
3461 spin_unlock_irqrestore(&wl->irq_lock, flags);
3462 }
3463
3464 /* Antennas for RX and management frame TX. */
3465 antenna = B43_ANTENNA_DEFAULT;
3466 b43_mgmtframe_txantenna(dev, antenna);
3467 antenna = B43_ANTENNA_DEFAULT;
3468 if (phy->ops->set_rx_antenna)
3469 phy->ops->set_rx_antenna(dev, antenna);
3470
3471 if (!!conf->radio_enabled != phy->radio_on) {
3472 if (conf->radio_enabled) {
3473 b43_software_rfkill(dev, RFKILL_STATE_UNBLOCKED);
3474 b43info(dev->wl, "Radio turned on by software\n");
3475 if (!dev->radio_hw_enable) {
3476 b43info(dev->wl, "The hardware RF-kill button "
3477 "still turns the radio physically off. "
3478 "Press the button to turn it on.\n");
3479 }
3480 } else {
3481 b43_software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED);
3482 b43info(dev->wl, "Radio turned off by software\n");
3483 }
3484 }
3485
3486 out_mac_enable:
3487 b43_mac_enable(dev);
3488 out_unlock_mutex:
3489 mutex_unlock(&wl->mutex);
3490
3491 return err;
3492 }
3493
3494 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3495 {
3496 struct ieee80211_supported_band *sband =
3497 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3498 struct ieee80211_rate *rate;
3499 int i;
3500 u16 basic, direct, offset, basic_offset, rateptr;
3501
3502 for (i = 0; i < sband->n_bitrates; i++) {
3503 rate = &sband->bitrates[i];
3504
3505 if (b43_is_cck_rate(rate->hw_value)) {
3506 direct = B43_SHM_SH_CCKDIRECT;
3507 basic = B43_SHM_SH_CCKBASIC;
3508 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3509 offset &= 0xF;
3510 } else {
3511 direct = B43_SHM_SH_OFDMDIRECT;
3512 basic = B43_SHM_SH_OFDMBASIC;
3513 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3514 offset &= 0xF;
3515 }
3516
3517 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3518
3519 if (b43_is_cck_rate(rate->hw_value)) {
3520 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3521 basic_offset &= 0xF;
3522 } else {
3523 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3524 basic_offset &= 0xF;
3525 }
3526
3527 /*
3528 * Get the pointer that we need to point to
3529 * from the direct map
3530 */
3531 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3532 direct + 2 * basic_offset);
3533 /* and write it to the basic map */
3534 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3535 rateptr);
3536 }
3537 }
3538
3539 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3540 struct ieee80211_vif *vif,
3541 struct ieee80211_bss_conf *conf,
3542 u32 changed)
3543 {
3544 struct b43_wl *wl = hw_to_b43_wl(hw);
3545 struct b43_wldev *dev;
3546 unsigned long flags;
3547
3548 mutex_lock(&wl->mutex);
3549
3550 dev = wl->current_dev;
3551 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3552 goto out_unlock_mutex;
3553
3554 B43_WARN_ON(wl->vif != vif);
3555
3556 if (changed & BSS_CHANGED_BSSID) {
3557 spin_lock_irqsave(&wl->irq_lock, flags);
3558 if (conf->bssid)
3559 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3560 else
3561 memset(wl->bssid, 0, ETH_ALEN);
3562
3563 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3564 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3565 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT)) {
3566 B43_WARN_ON(vif->type != wl->if_type);
3567 if (changed & BSS_CHANGED_BEACON)
3568 b43_update_templates(wl);
3569 } else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) {
3570 if (changed & BSS_CHANGED_BEACON)
3571 b43_update_templates(wl);
3572 }
3573 b43_write_mac_bssid_templates(dev);
3574 }
3575 spin_unlock_irqrestore(&wl->irq_lock, flags);
3576 }
3577
3578 b43_mac_suspend(dev);
3579
3580 /* Update templates for AP/mesh mode. */
3581 if (changed & BSS_CHANGED_BEACON_INT &&
3582 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3583 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3584 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3585 b43_set_beacon_int(dev, conf->beacon_int);
3586
3587 if (changed & BSS_CHANGED_BASIC_RATES)
3588 b43_update_basic_rates(dev, conf->basic_rates);
3589
3590 if (changed & BSS_CHANGED_ERP_SLOT) {
3591 if (conf->use_short_slot)
3592 b43_short_slot_timing_enable(dev);
3593 else
3594 b43_short_slot_timing_disable(dev);
3595 }
3596
3597 b43_mac_enable(dev);
3598 out_unlock_mutex:
3599 mutex_unlock(&wl->mutex);
3600 }
3601
3602 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3603 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3604 struct ieee80211_key_conf *key)
3605 {
3606 struct b43_wl *wl = hw_to_b43_wl(hw);
3607 struct b43_wldev *dev;
3608 u8 algorithm;
3609 u8 index;
3610 int err;
3611 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
3612
3613 if (modparam_nohwcrypt)
3614 return -ENOSPC; /* User disabled HW-crypto */
3615
3616 mutex_lock(&wl->mutex);
3617 spin_lock_irq(&wl->irq_lock);
3618 write_lock(&wl->tx_lock);
3619 /* Why do we need all this locking here?
3620 * mutex -> Every config operation must take it.
3621 * irq_lock -> We modify the dev->key array, which is accessed
3622 * in the IRQ handlers.
3623 * tx_lock -> We modify the dev->key array, which is accessed
3624 * in the TX handler.
3625 */
3626
3627 dev = wl->current_dev;
3628 err = -ENODEV;
3629 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3630 goto out_unlock;
3631
3632 if (dev->fw.pcm_request_failed) {
3633 /* We don't have firmware for the crypto engine.
3634 * Must use software-crypto. */
3635 err = -EOPNOTSUPP;
3636 goto out_unlock;
3637 }
3638
3639 err = -EINVAL;
3640 switch (key->alg) {
3641 case ALG_WEP:
3642 if (key->keylen == LEN_WEP40)
3643 algorithm = B43_SEC_ALGO_WEP40;
3644 else
3645 algorithm = B43_SEC_ALGO_WEP104;
3646 break;
3647 case ALG_TKIP:
3648 algorithm = B43_SEC_ALGO_TKIP;
3649 break;
3650 case ALG_CCMP:
3651 algorithm = B43_SEC_ALGO_AES;
3652 break;
3653 default:
3654 B43_WARN_ON(1);
3655 goto out_unlock;
3656 }
3657 index = (u8) (key->keyidx);
3658 if (index > 3)
3659 goto out_unlock;
3660
3661 switch (cmd) {
3662 case SET_KEY:
3663 if (algorithm == B43_SEC_ALGO_TKIP) {
3664 /* FIXME: No TKIP hardware encryption for now. */
3665 err = -EOPNOTSUPP;
3666 goto out_unlock;
3667 }
3668
3669 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3670 if (WARN_ON(!sta)) {
3671 err = -EOPNOTSUPP;
3672 goto out_unlock;
3673 }
3674 /* Pairwise key with an assigned MAC address. */
3675 err = b43_key_write(dev, -1, algorithm,
3676 key->key, key->keylen,
3677 sta->addr, key);
3678 } else {
3679 /* Group key */
3680 err = b43_key_write(dev, index, algorithm,
3681 key->key, key->keylen, NULL, key);
3682 }
3683 if (err)
3684 goto out_unlock;
3685
3686 if (algorithm == B43_SEC_ALGO_WEP40 ||
3687 algorithm == B43_SEC_ALGO_WEP104) {
3688 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3689 } else {
3690 b43_hf_write(dev,
3691 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3692 }
3693 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3694 break;
3695 case DISABLE_KEY: {
3696 err = b43_key_clear(dev, key->hw_key_idx);
3697 if (err)
3698 goto out_unlock;
3699 break;
3700 }
3701 default:
3702 B43_WARN_ON(1);
3703 }
3704
3705 out_unlock:
3706 if (!err) {
3707 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3708 "mac: %pM\n",
3709 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3710 sta ? sta->addr : bcast_addr);
3711 b43_dump_keymemory(dev);
3712 }
3713 write_unlock(&wl->tx_lock);
3714 spin_unlock_irq(&wl->irq_lock);
3715 mutex_unlock(&wl->mutex);
3716
3717 return err;
3718 }
3719
3720 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3721 unsigned int changed, unsigned int *fflags,
3722 int mc_count, struct dev_addr_list *mc_list)
3723 {
3724 struct b43_wl *wl = hw_to_b43_wl(hw);
3725 struct b43_wldev *dev = wl->current_dev;
3726 unsigned long flags;
3727
3728 if (!dev) {
3729 *fflags = 0;
3730 return;
3731 }
3732
3733 spin_lock_irqsave(&wl->irq_lock, flags);
3734 *fflags &= FIF_PROMISC_IN_BSS |
3735 FIF_ALLMULTI |
3736 FIF_FCSFAIL |
3737 FIF_PLCPFAIL |
3738 FIF_CONTROL |
3739 FIF_OTHER_BSS |
3740 FIF_BCN_PRBRESP_PROMISC;
3741
3742 changed &= FIF_PROMISC_IN_BSS |
3743 FIF_ALLMULTI |
3744 FIF_FCSFAIL |
3745 FIF_PLCPFAIL |
3746 FIF_CONTROL |
3747 FIF_OTHER_BSS |
3748 FIF_BCN_PRBRESP_PROMISC;
3749
3750 wl->filter_flags = *fflags;
3751
3752 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3753 b43_adjust_opmode(dev);
3754 spin_unlock_irqrestore(&wl->irq_lock, flags);
3755 }
3756
3757 /* Locking: wl->mutex */
3758 static void b43_wireless_core_stop(struct b43_wldev *dev)
3759 {
3760 struct b43_wl *wl = dev->wl;
3761 unsigned long flags;
3762
3763 if (b43_status(dev) < B43_STAT_STARTED)
3764 return;
3765
3766 /* Disable and sync interrupts. We must do this before than
3767 * setting the status to INITIALIZED, as the interrupt handler
3768 * won't care about IRQs then. */
3769 spin_lock_irqsave(&wl->irq_lock, flags);
3770 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3771 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3772 spin_unlock_irqrestore(&wl->irq_lock, flags);
3773 b43_synchronize_irq(dev);
3774
3775 write_lock_irqsave(&wl->tx_lock, flags);
3776 b43_set_status(dev, B43_STAT_INITIALIZED);
3777 write_unlock_irqrestore(&wl->tx_lock, flags);
3778
3779 b43_pio_stop(dev);
3780 mutex_unlock(&wl->mutex);
3781 /* Must unlock as it would otherwise deadlock. No races here.
3782 * Cancel the possibly running self-rearming periodic work. */
3783 cancel_delayed_work_sync(&dev->periodic_work);
3784 mutex_lock(&wl->mutex);
3785
3786 b43_mac_suspend(dev);
3787 free_irq(dev->dev->irq, dev);
3788 b43dbg(wl, "Wireless interface stopped\n");
3789 }
3790
3791 /* Locking: wl->mutex */
3792 static int b43_wireless_core_start(struct b43_wldev *dev)
3793 {
3794 int err;
3795
3796 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3797
3798 drain_txstatus_queue(dev);
3799 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3800 IRQF_SHARED, KBUILD_MODNAME, dev);
3801 if (err) {
3802 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3803 goto out;
3804 }
3805
3806 /* We are ready to run. */
3807 b43_set_status(dev, B43_STAT_STARTED);
3808
3809 /* Start data flow (TX/RX). */
3810 b43_mac_enable(dev);
3811 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3812
3813 /* Start maintainance work */
3814 b43_periodic_tasks_setup(dev);
3815
3816 b43dbg(dev->wl, "Wireless interface started\n");
3817 out:
3818 return err;
3819 }
3820
3821 /* Get PHY and RADIO versioning numbers */
3822 static int b43_phy_versioning(struct b43_wldev *dev)
3823 {
3824 struct b43_phy *phy = &dev->phy;
3825 u32 tmp;
3826 u8 analog_type;
3827 u8 phy_type;
3828 u8 phy_rev;
3829 u16 radio_manuf;
3830 u16 radio_ver;
3831 u16 radio_rev;
3832 int unsupported = 0;
3833
3834 /* Get PHY versioning */
3835 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3836 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3837 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3838 phy_rev = (tmp & B43_PHYVER_VERSION);
3839 switch (phy_type) {
3840 case B43_PHYTYPE_A:
3841 if (phy_rev >= 4)
3842 unsupported = 1;
3843 break;
3844 case B43_PHYTYPE_B:
3845 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3846 && phy_rev != 7)
3847 unsupported = 1;
3848 break;
3849 case B43_PHYTYPE_G:
3850 if (phy_rev > 9)
3851 unsupported = 1;
3852 break;
3853 #ifdef CONFIG_B43_NPHY
3854 case B43_PHYTYPE_N:
3855 if (phy_rev > 4)
3856 unsupported = 1;
3857 break;
3858 #endif
3859 #ifdef CONFIG_B43_PHY_LP
3860 case B43_PHYTYPE_LP:
3861 if (phy_rev > 1)
3862 unsupported = 1;
3863 break;
3864 #endif
3865 default:
3866 unsupported = 1;
3867 };
3868 if (unsupported) {
3869 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3870 "(Analog %u, Type %u, Revision %u)\n",
3871 analog_type, phy_type, phy_rev);
3872 return -EOPNOTSUPP;
3873 }
3874 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3875 analog_type, phy_type, phy_rev);
3876
3877 /* Get RADIO versioning */
3878 if (dev->dev->bus->chip_id == 0x4317) {
3879 if (dev->dev->bus->chip_rev == 0)
3880 tmp = 0x3205017F;
3881 else if (dev->dev->bus->chip_rev == 1)
3882 tmp = 0x4205017F;
3883 else
3884 tmp = 0x5205017F;
3885 } else {
3886 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3887 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3888 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3889 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3890 }
3891 radio_manuf = (tmp & 0x00000FFF);
3892 radio_ver = (tmp & 0x0FFFF000) >> 12;
3893 radio_rev = (tmp & 0xF0000000) >> 28;
3894 if (radio_manuf != 0x17F /* Broadcom */)
3895 unsupported = 1;
3896 switch (phy_type) {
3897 case B43_PHYTYPE_A:
3898 if (radio_ver != 0x2060)
3899 unsupported = 1;
3900 if (radio_rev != 1)
3901 unsupported = 1;
3902 if (radio_manuf != 0x17F)
3903 unsupported = 1;
3904 break;
3905 case B43_PHYTYPE_B:
3906 if ((radio_ver & 0xFFF0) != 0x2050)
3907 unsupported = 1;
3908 break;
3909 case B43_PHYTYPE_G:
3910 if (radio_ver != 0x2050)
3911 unsupported = 1;
3912 break;
3913 case B43_PHYTYPE_N:
3914 if (radio_ver != 0x2055 && radio_ver != 0x2056)
3915 unsupported = 1;
3916 break;
3917 case B43_PHYTYPE_LP:
3918 if (radio_ver != 0x2062)
3919 unsupported = 1;
3920 break;
3921 default:
3922 B43_WARN_ON(1);
3923 }
3924 if (unsupported) {
3925 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3926 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3927 radio_manuf, radio_ver, radio_rev);
3928 return -EOPNOTSUPP;
3929 }
3930 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3931 radio_manuf, radio_ver, radio_rev);
3932
3933 phy->radio_manuf = radio_manuf;
3934 phy->radio_ver = radio_ver;
3935 phy->radio_rev = radio_rev;
3936
3937 phy->analog = analog_type;
3938 phy->type = phy_type;
3939 phy->rev = phy_rev;
3940
3941 return 0;
3942 }
3943
3944 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3945 struct b43_phy *phy)
3946 {
3947 phy->hardware_power_control = !!modparam_hwpctl;
3948 phy->next_txpwr_check_time = jiffies;
3949 /* PHY TX errors counter. */
3950 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3951
3952 #if B43_DEBUG
3953 phy->phy_locked = 0;
3954 phy->radio_locked = 0;
3955 #endif
3956 }
3957
3958 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3959 {
3960 dev->dfq_valid = 0;
3961
3962 /* Assume the radio is enabled. If it's not enabled, the state will
3963 * immediately get fixed on the first periodic work run. */
3964 dev->radio_hw_enable = 1;
3965
3966 /* Stats */
3967 memset(&dev->stats, 0, sizeof(dev->stats));
3968
3969 setup_struct_phy_for_init(dev, &dev->phy);
3970
3971 /* IRQ related flags */
3972 dev->irq_reason = 0;
3973 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3974 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
3975 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
3976 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
3977
3978 dev->mac_suspended = 1;
3979
3980 /* Noise calculation context */
3981 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3982 }
3983
3984 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3985 {
3986 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3987 u64 hf;
3988
3989 if (!modparam_btcoex)
3990 return;
3991 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3992 return;
3993 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3994 return;
3995
3996 hf = b43_hf_read(dev);
3997 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3998 hf |= B43_HF_BTCOEXALT;
3999 else
4000 hf |= B43_HF_BTCOEX;
4001 b43_hf_write(dev, hf);
4002 }
4003
4004 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4005 {
4006 if (!modparam_btcoex)
4007 return;
4008 //TODO
4009 }
4010
4011 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4012 {
4013 #ifdef CONFIG_SSB_DRIVER_PCICORE
4014 struct ssb_bus *bus = dev->dev->bus;
4015 u32 tmp;
4016
4017 if (bus->pcicore.dev &&
4018 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
4019 bus->pcicore.dev->id.revision <= 5) {
4020 /* IMCFGLO timeouts workaround. */
4021 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
4022 tmp &= ~SSB_IMCFGLO_REQTO;
4023 tmp &= ~SSB_IMCFGLO_SERTO;
4024 switch (bus->bustype) {
4025 case SSB_BUSTYPE_PCI:
4026 case SSB_BUSTYPE_PCMCIA:
4027 tmp |= 0x32;
4028 break;
4029 case SSB_BUSTYPE_SSB:
4030 tmp |= 0x53;
4031 break;
4032 }
4033 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
4034 }
4035 #endif /* CONFIG_SSB_DRIVER_PCICORE */
4036 }
4037
4038 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4039 {
4040 u16 pu_delay;
4041
4042 /* The time value is in microseconds. */
4043 if (dev->phy.type == B43_PHYTYPE_A)
4044 pu_delay = 3700;
4045 else
4046 pu_delay = 1050;
4047 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4048 pu_delay = 500;
4049 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4050 pu_delay = max(pu_delay, (u16)2400);
4051
4052 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4053 }
4054
4055 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4056 static void b43_set_pretbtt(struct b43_wldev *dev)
4057 {
4058 u16 pretbtt;
4059
4060 /* The time value is in microseconds. */
4061 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4062 pretbtt = 2;
4063 } else {
4064 if (dev->phy.type == B43_PHYTYPE_A)
4065 pretbtt = 120;
4066 else
4067 pretbtt = 250;
4068 }
4069 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4070 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4071 }
4072
4073 /* Shutdown a wireless core */
4074 /* Locking: wl->mutex */
4075 static void b43_wireless_core_exit(struct b43_wldev *dev)
4076 {
4077 u32 macctl;
4078
4079 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
4080 if (b43_status(dev) != B43_STAT_INITIALIZED)
4081 return;
4082 b43_set_status(dev, B43_STAT_UNINIT);
4083
4084 /* Stop the microcode PSM. */
4085 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4086 macctl &= ~B43_MACCTL_PSM_RUN;
4087 macctl |= B43_MACCTL_PSM_JMP0;
4088 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4089
4090 if (!dev->suspend_in_progress) {
4091 b43_leds_exit(dev);
4092 b43_rng_exit(dev->wl);
4093 }
4094 b43_dma_free(dev);
4095 b43_pio_free(dev);
4096 b43_chip_exit(dev);
4097 dev->phy.ops->switch_analog(dev, 0);
4098 if (dev->wl->current_beacon) {
4099 dev_kfree_skb_any(dev->wl->current_beacon);
4100 dev->wl->current_beacon = NULL;
4101 }
4102
4103 ssb_device_disable(dev->dev, 0);
4104 ssb_bus_may_powerdown(dev->dev->bus);
4105 }
4106
4107 /* Initialize a wireless core */
4108 static int b43_wireless_core_init(struct b43_wldev *dev)
4109 {
4110 struct b43_wl *wl = dev->wl;
4111 struct ssb_bus *bus = dev->dev->bus;
4112 struct ssb_sprom *sprom = &bus->sprom;
4113 struct b43_phy *phy = &dev->phy;
4114 int err;
4115 u64 hf;
4116 u32 tmp;
4117
4118 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4119
4120 err = ssb_bus_powerup(bus, 0);
4121 if (err)
4122 goto out;
4123 if (!ssb_device_is_enabled(dev->dev)) {
4124 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4125 b43_wireless_core_reset(dev, tmp);
4126 }
4127
4128 /* Reset all data structures. */
4129 setup_struct_wldev_for_init(dev);
4130 phy->ops->prepare_structs(dev);
4131
4132 /* Enable IRQ routing to this device. */
4133 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4134
4135 b43_imcfglo_timeouts_workaround(dev);
4136 b43_bluetooth_coext_disable(dev);
4137 if (phy->ops->prepare_hardware) {
4138 err = phy->ops->prepare_hardware(dev);
4139 if (err)
4140 goto err_busdown;
4141 }
4142 err = b43_chip_init(dev);
4143 if (err)
4144 goto err_busdown;
4145 b43_shm_write16(dev, B43_SHM_SHARED,
4146 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4147 hf = b43_hf_read(dev);
4148 if (phy->type == B43_PHYTYPE_G) {
4149 hf |= B43_HF_SYMW;
4150 if (phy->rev == 1)
4151 hf |= B43_HF_GDCW;
4152 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4153 hf |= B43_HF_OFDMPABOOST;
4154 }
4155 if (phy->radio_ver == 0x2050) {
4156 if (phy->radio_rev == 6)
4157 hf |= B43_HF_4318TSSI;
4158 if (phy->radio_rev < 6)
4159 hf |= B43_HF_VCORECALC;
4160 }
4161 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4162 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4163 #ifdef CONFIG_SSB_DRIVER_PCICORE
4164 if ((bus->bustype == SSB_BUSTYPE_PCI) &&
4165 (bus->pcicore.dev->id.revision <= 10))
4166 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4167 #endif
4168 hf &= ~B43_HF_SKCFPUP;
4169 b43_hf_write(dev, hf);
4170
4171 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4172 B43_DEFAULT_LONG_RETRY_LIMIT);
4173 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4174 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4175
4176 /* Disable sending probe responses from firmware.
4177 * Setting the MaxTime to one usec will always trigger
4178 * a timeout, so we never send any probe resp.
4179 * A timeout of zero is infinite. */
4180 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4181
4182 b43_rate_memory_init(dev);
4183 b43_set_phytxctl_defaults(dev);
4184
4185 /* Minimum Contention Window */
4186 if (phy->type == B43_PHYTYPE_B) {
4187 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4188 } else {
4189 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4190 }
4191 /* Maximum Contention Window */
4192 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4193
4194 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4195 dev->__using_pio_transfers = 1;
4196 err = b43_pio_init(dev);
4197 } else {
4198 dev->__using_pio_transfers = 0;
4199 err = b43_dma_init(dev);
4200 }
4201 if (err)
4202 goto err_chip_exit;
4203 b43_qos_init(dev);
4204 b43_set_synth_pu_delay(dev, 1);
4205 b43_bluetooth_coext_enable(dev);
4206
4207 ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4208 b43_upload_card_macaddress(dev);
4209 b43_security_init(dev);
4210 if (!dev->suspend_in_progress)
4211 b43_rng_init(wl);
4212
4213 b43_set_status(dev, B43_STAT_INITIALIZED);
4214
4215 if (!dev->suspend_in_progress)
4216 b43_leds_init(dev);
4217 out:
4218 return err;
4219
4220 err_chip_exit:
4221 b43_chip_exit(dev);
4222 err_busdown:
4223 ssb_bus_may_powerdown(bus);
4224 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4225 return err;
4226 }
4227
4228 static int b43_op_add_interface(struct ieee80211_hw *hw,
4229 struct ieee80211_if_init_conf *conf)
4230 {
4231 struct b43_wl *wl = hw_to_b43_wl(hw);
4232 struct b43_wldev *dev;
4233 unsigned long flags;
4234 int err = -EOPNOTSUPP;
4235
4236 /* TODO: allow WDS/AP devices to coexist */
4237
4238 if (conf->type != NL80211_IFTYPE_AP &&
4239 conf->type != NL80211_IFTYPE_MESH_POINT &&
4240 conf->type != NL80211_IFTYPE_STATION &&
4241 conf->type != NL80211_IFTYPE_WDS &&
4242 conf->type != NL80211_IFTYPE_ADHOC)
4243 return -EOPNOTSUPP;
4244
4245 mutex_lock(&wl->mutex);
4246 if (wl->operating)
4247 goto out_mutex_unlock;
4248
4249 b43dbg(wl, "Adding Interface type %d\n", conf->type);
4250
4251 dev = wl->current_dev;
4252 wl->operating = 1;
4253 wl->vif = conf->vif;
4254 wl->if_type = conf->type;
4255 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4256
4257 spin_lock_irqsave(&wl->irq_lock, flags);
4258 b43_adjust_opmode(dev);
4259 b43_set_pretbtt(dev);
4260 b43_set_synth_pu_delay(dev, 0);
4261 b43_upload_card_macaddress(dev);
4262 spin_unlock_irqrestore(&wl->irq_lock, flags);
4263
4264 err = 0;
4265 out_mutex_unlock:
4266 mutex_unlock(&wl->mutex);
4267
4268 return err;
4269 }
4270
4271 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4272 struct ieee80211_if_init_conf *conf)
4273 {
4274 struct b43_wl *wl = hw_to_b43_wl(hw);
4275 struct b43_wldev *dev = wl->current_dev;
4276 unsigned long flags;
4277
4278 b43dbg(wl, "Removing Interface type %d\n", conf->type);
4279
4280 mutex_lock(&wl->mutex);
4281
4282 B43_WARN_ON(!wl->operating);
4283 B43_WARN_ON(wl->vif != conf->vif);
4284 wl->vif = NULL;
4285
4286 wl->operating = 0;
4287
4288 spin_lock_irqsave(&wl->irq_lock, flags);
4289 b43_adjust_opmode(dev);
4290 memset(wl->mac_addr, 0, ETH_ALEN);
4291 b43_upload_card_macaddress(dev);
4292 spin_unlock_irqrestore(&wl->irq_lock, flags);
4293
4294 mutex_unlock(&wl->mutex);
4295 }
4296
4297 static int b43_op_start(struct ieee80211_hw *hw)
4298 {
4299 struct b43_wl *wl = hw_to_b43_wl(hw);
4300 struct b43_wldev *dev = wl->current_dev;
4301 int did_init = 0;
4302 int err = 0;
4303 bool do_rfkill_exit = 0;
4304
4305 /* Kill all old instance specific information to make sure
4306 * the card won't use it in the short timeframe between start
4307 * and mac80211 reconfiguring it. */
4308 memset(wl->bssid, 0, ETH_ALEN);
4309 memset(wl->mac_addr, 0, ETH_ALEN);
4310 wl->filter_flags = 0;
4311 wl->radiotap_enabled = 0;
4312 b43_qos_clear(wl);
4313 wl->beacon0_uploaded = 0;
4314 wl->beacon1_uploaded = 0;
4315 wl->beacon_templates_virgin = 1;
4316
4317 /* First register RFkill.
4318 * LEDs that are registered later depend on it. */
4319 b43_rfkill_init(dev);
4320
4321 mutex_lock(&wl->mutex);
4322
4323 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4324 err = b43_wireless_core_init(dev);
4325 if (err) {
4326 do_rfkill_exit = 1;
4327 goto out_mutex_unlock;
4328 }
4329 did_init = 1;
4330 }
4331
4332 if (b43_status(dev) < B43_STAT_STARTED) {
4333 err = b43_wireless_core_start(dev);
4334 if (err) {
4335 if (did_init)
4336 b43_wireless_core_exit(dev);
4337 do_rfkill_exit = 1;
4338 goto out_mutex_unlock;
4339 }
4340 }
4341
4342 out_mutex_unlock:
4343 mutex_unlock(&wl->mutex);
4344
4345 if (do_rfkill_exit)
4346 b43_rfkill_exit(dev);
4347
4348 return err;
4349 }
4350
4351 static void b43_op_stop(struct ieee80211_hw *hw)
4352 {
4353 struct b43_wl *wl = hw_to_b43_wl(hw);
4354 struct b43_wldev *dev = wl->current_dev;
4355
4356 b43_rfkill_exit(dev);
4357 cancel_work_sync(&(wl->beacon_update_trigger));
4358
4359 mutex_lock(&wl->mutex);
4360 if (b43_status(dev) >= B43_STAT_STARTED)
4361 b43_wireless_core_stop(dev);
4362 b43_wireless_core_exit(dev);
4363 mutex_unlock(&wl->mutex);
4364
4365 cancel_work_sync(&(wl->txpower_adjust_work));
4366 }
4367
4368 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4369 struct ieee80211_sta *sta, bool set)
4370 {
4371 struct b43_wl *wl = hw_to_b43_wl(hw);
4372 unsigned long flags;
4373
4374 spin_lock_irqsave(&wl->irq_lock, flags);
4375 b43_update_templates(wl);
4376 spin_unlock_irqrestore(&wl->irq_lock, flags);
4377
4378 return 0;
4379 }
4380
4381 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4382 struct ieee80211_vif *vif,
4383 enum sta_notify_cmd notify_cmd,
4384 struct ieee80211_sta *sta)
4385 {
4386 struct b43_wl *wl = hw_to_b43_wl(hw);
4387
4388 B43_WARN_ON(!vif || wl->vif != vif);
4389 }
4390
4391 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4392 {
4393 struct b43_wl *wl = hw_to_b43_wl(hw);
4394 struct b43_wldev *dev;
4395
4396 mutex_lock(&wl->mutex);
4397 dev = wl->current_dev;
4398 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4399 /* Disable CFP update during scan on other channels. */
4400 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4401 }
4402 mutex_unlock(&wl->mutex);
4403 }
4404
4405 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4406 {
4407 struct b43_wl *wl = hw_to_b43_wl(hw);
4408 struct b43_wldev *dev;
4409
4410 mutex_lock(&wl->mutex);
4411 dev = wl->current_dev;
4412 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4413 /* Re-enable CFP update. */
4414 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4415 }
4416 mutex_unlock(&wl->mutex);
4417 }
4418
4419 static const struct ieee80211_ops b43_hw_ops = {
4420 .tx = b43_op_tx,
4421 .conf_tx = b43_op_conf_tx,
4422 .add_interface = b43_op_add_interface,
4423 .remove_interface = b43_op_remove_interface,
4424 .config = b43_op_config,
4425 .bss_info_changed = b43_op_bss_info_changed,
4426 .configure_filter = b43_op_configure_filter,
4427 .set_key = b43_op_set_key,
4428 .get_stats = b43_op_get_stats,
4429 .get_tx_stats = b43_op_get_tx_stats,
4430 .get_tsf = b43_op_get_tsf,
4431 .set_tsf = b43_op_set_tsf,
4432 .start = b43_op_start,
4433 .stop = b43_op_stop,
4434 .set_tim = b43_op_beacon_set_tim,
4435 .sta_notify = b43_op_sta_notify,
4436 .sw_scan_start = b43_op_sw_scan_start_notifier,
4437 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
4438 };
4439
4440 /* Hard-reset the chip. Do not call this directly.
4441 * Use b43_controller_restart()
4442 */
4443 static void b43_chip_reset(struct work_struct *work)
4444 {
4445 struct b43_wldev *dev =
4446 container_of(work, struct b43_wldev, restart_work);
4447 struct b43_wl *wl = dev->wl;
4448 int err = 0;
4449 int prev_status;
4450
4451 mutex_lock(&wl->mutex);
4452
4453 prev_status = b43_status(dev);
4454 /* Bring the device down... */
4455 if (prev_status >= B43_STAT_STARTED)
4456 b43_wireless_core_stop(dev);
4457 if (prev_status >= B43_STAT_INITIALIZED)
4458 b43_wireless_core_exit(dev);
4459
4460 /* ...and up again. */
4461 if (prev_status >= B43_STAT_INITIALIZED) {
4462 err = b43_wireless_core_init(dev);
4463 if (err)
4464 goto out;
4465 }
4466 if (prev_status >= B43_STAT_STARTED) {
4467 err = b43_wireless_core_start(dev);
4468 if (err) {
4469 b43_wireless_core_exit(dev);
4470 goto out;
4471 }
4472 }
4473 out:
4474 if (err)
4475 wl->current_dev = NULL; /* Failed to init the dev. */
4476 mutex_unlock(&wl->mutex);
4477 if (err)
4478 b43err(wl, "Controller restart FAILED\n");
4479 else
4480 b43info(wl, "Controller restarted\n");
4481 }
4482
4483 static int b43_setup_bands(struct b43_wldev *dev,
4484 bool have_2ghz_phy, bool have_5ghz_phy)
4485 {
4486 struct ieee80211_hw *hw = dev->wl->hw;
4487
4488 if (have_2ghz_phy)
4489 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4490 if (dev->phy.type == B43_PHYTYPE_N) {
4491 if (have_5ghz_phy)
4492 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4493 } else {
4494 if (have_5ghz_phy)
4495 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4496 }
4497
4498 dev->phy.supports_2ghz = have_2ghz_phy;
4499 dev->phy.supports_5ghz = have_5ghz_phy;
4500
4501 return 0;
4502 }
4503
4504 static void b43_wireless_core_detach(struct b43_wldev *dev)
4505 {
4506 /* We release firmware that late to not be required to re-request
4507 * is all the time when we reinit the core. */
4508 b43_release_firmware(dev);
4509 b43_phy_free(dev);
4510 }
4511
4512 static int b43_wireless_core_attach(struct b43_wldev *dev)
4513 {
4514 struct b43_wl *wl = dev->wl;
4515 struct ssb_bus *bus = dev->dev->bus;
4516 struct pci_dev *pdev = bus->host_pci;
4517 int err;
4518 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4519 u32 tmp;
4520
4521 /* Do NOT do any device initialization here.
4522 * Do it in wireless_core_init() instead.
4523 * This function is for gathering basic information about the HW, only.
4524 * Also some structs may be set up here. But most likely you want to have
4525 * that in core_init(), too.
4526 */
4527
4528 err = ssb_bus_powerup(bus, 0);
4529 if (err) {
4530 b43err(wl, "Bus powerup failed\n");
4531 goto out;
4532 }
4533 /* Get the PHY type. */
4534 if (dev->dev->id.revision >= 5) {
4535 u32 tmshigh;
4536
4537 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4538 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4539 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4540 } else
4541 B43_WARN_ON(1);
4542
4543 dev->phy.gmode = have_2ghz_phy;
4544 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4545 b43_wireless_core_reset(dev, tmp);
4546
4547 err = b43_phy_versioning(dev);
4548 if (err)
4549 goto err_powerdown;
4550 /* Check if this device supports multiband. */
4551 if (!pdev ||
4552 (pdev->device != 0x4312 &&
4553 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4554 /* No multiband support. */
4555 have_2ghz_phy = 0;
4556 have_5ghz_phy = 0;
4557 switch (dev->phy.type) {
4558 case B43_PHYTYPE_A:
4559 have_5ghz_phy = 1;
4560 break;
4561 case B43_PHYTYPE_G:
4562 case B43_PHYTYPE_N:
4563 case B43_PHYTYPE_LP:
4564 have_2ghz_phy = 1;
4565 break;
4566 default:
4567 B43_WARN_ON(1);
4568 }
4569 }
4570 if (dev->phy.type == B43_PHYTYPE_A) {
4571 /* FIXME */
4572 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4573 err = -EOPNOTSUPP;
4574 goto err_powerdown;
4575 }
4576 if (1 /* disable A-PHY */) {
4577 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4578 if (dev->phy.type != B43_PHYTYPE_N) {
4579 have_2ghz_phy = 1;
4580 have_5ghz_phy = 0;
4581 }
4582 }
4583
4584 err = b43_phy_allocate(dev);
4585 if (err)
4586 goto err_powerdown;
4587
4588 dev->phy.gmode = have_2ghz_phy;
4589 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4590 b43_wireless_core_reset(dev, tmp);
4591
4592 err = b43_validate_chipaccess(dev);
4593 if (err)
4594 goto err_phy_free;
4595 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4596 if (err)
4597 goto err_phy_free;
4598
4599 /* Now set some default "current_dev" */
4600 if (!wl->current_dev)
4601 wl->current_dev = dev;
4602 INIT_WORK(&dev->restart_work, b43_chip_reset);
4603
4604 dev->phy.ops->switch_analog(dev, 0);
4605 ssb_device_disable(dev->dev, 0);
4606 ssb_bus_may_powerdown(bus);
4607
4608 out:
4609 return err;
4610
4611 err_phy_free:
4612 b43_phy_free(dev);
4613 err_powerdown:
4614 ssb_bus_may_powerdown(bus);
4615 return err;
4616 }
4617
4618 static void b43_one_core_detach(struct ssb_device *dev)
4619 {
4620 struct b43_wldev *wldev;
4621 struct b43_wl *wl;
4622
4623 /* Do not cancel ieee80211-workqueue based work here.
4624 * See comment in b43_remove(). */
4625
4626 wldev = ssb_get_drvdata(dev);
4627 wl = wldev->wl;
4628 b43_debugfs_remove_device(wldev);
4629 b43_wireless_core_detach(wldev);
4630 list_del(&wldev->list);
4631 wl->nr_devs--;
4632 ssb_set_drvdata(dev, NULL);
4633 kfree(wldev);
4634 }
4635
4636 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4637 {
4638 struct b43_wldev *wldev;
4639 struct pci_dev *pdev;
4640 int err = -ENOMEM;
4641
4642 if (!list_empty(&wl->devlist)) {
4643 /* We are not the first core on this chip. */
4644 pdev = dev->bus->host_pci;
4645 /* Only special chips support more than one wireless
4646 * core, although some of the other chips have more than
4647 * one wireless core as well. Check for this and
4648 * bail out early.
4649 */
4650 if (!pdev ||
4651 ((pdev->device != 0x4321) &&
4652 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4653 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4654 return -ENODEV;
4655 }
4656 }
4657
4658 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4659 if (!wldev)
4660 goto out;
4661
4662 wldev->dev = dev;
4663 wldev->wl = wl;
4664 b43_set_status(wldev, B43_STAT_UNINIT);
4665 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4666 tasklet_init(&wldev->isr_tasklet,
4667 (void (*)(unsigned long))b43_interrupt_tasklet,
4668 (unsigned long)wldev);
4669 INIT_LIST_HEAD(&wldev->list);
4670
4671 err = b43_wireless_core_attach(wldev);
4672 if (err)
4673 goto err_kfree_wldev;
4674
4675 list_add(&wldev->list, &wl->devlist);
4676 wl->nr_devs++;
4677 ssb_set_drvdata(dev, wldev);
4678 b43_debugfs_add_device(wldev);
4679
4680 out:
4681 return err;
4682
4683 err_kfree_wldev:
4684 kfree(wldev);
4685 return err;
4686 }
4687
4688 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4689 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4690 (pdev->device == _device) && \
4691 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4692 (pdev->subsystem_device == _subdevice) )
4693
4694 static void b43_sprom_fixup(struct ssb_bus *bus)
4695 {
4696 struct pci_dev *pdev;
4697
4698 /* boardflags workarounds */
4699 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4700 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4701 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4702 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4703 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4704 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4705 if (bus->bustype == SSB_BUSTYPE_PCI) {
4706 pdev = bus->host_pci;
4707 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4708 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4709 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
4710 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4711 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4712 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4713 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4714 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4715 }
4716 }
4717
4718 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4719 {
4720 struct ieee80211_hw *hw = wl->hw;
4721
4722 ssb_set_devtypedata(dev, NULL);
4723 ieee80211_free_hw(hw);
4724 }
4725
4726 static int b43_wireless_init(struct ssb_device *dev)
4727 {
4728 struct ssb_sprom *sprom = &dev->bus->sprom;
4729 struct ieee80211_hw *hw;
4730 struct b43_wl *wl;
4731 int err = -ENOMEM;
4732
4733 b43_sprom_fixup(dev->bus);
4734
4735 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4736 if (!hw) {
4737 b43err(NULL, "Could not allocate ieee80211 device\n");
4738 goto out;
4739 }
4740
4741 /* fill hw info */
4742 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4743 IEEE80211_HW_SIGNAL_DBM |
4744 IEEE80211_HW_NOISE_DBM;
4745
4746 hw->wiphy->interface_modes =
4747 BIT(NL80211_IFTYPE_AP) |
4748 BIT(NL80211_IFTYPE_MESH_POINT) |
4749 BIT(NL80211_IFTYPE_STATION) |
4750 BIT(NL80211_IFTYPE_WDS) |
4751 BIT(NL80211_IFTYPE_ADHOC);
4752
4753 hw->queues = b43_modparam_qos ? 4 : 1;
4754 hw->max_rates = 2;
4755 SET_IEEE80211_DEV(hw, dev->dev);
4756 if (is_valid_ether_addr(sprom->et1mac))
4757 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4758 else
4759 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4760
4761 /* Get and initialize struct b43_wl */
4762 wl = hw_to_b43_wl(hw);
4763 memset(wl, 0, sizeof(*wl));
4764 wl->hw = hw;
4765 spin_lock_init(&wl->irq_lock);
4766 rwlock_init(&wl->tx_lock);
4767 spin_lock_init(&wl->leds_lock);
4768 spin_lock_init(&wl->shm_lock);
4769 mutex_init(&wl->mutex);
4770 INIT_LIST_HEAD(&wl->devlist);
4771 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4772 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4773
4774 ssb_set_devtypedata(dev, wl);
4775 b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
4776 dev->bus->chip_id, dev->id.revision);
4777 err = 0;
4778 out:
4779 return err;
4780 }
4781
4782 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4783 {
4784 struct b43_wl *wl;
4785 int err;
4786 int first = 0;
4787
4788 wl = ssb_get_devtypedata(dev);
4789 if (!wl) {
4790 /* Probing the first core. Must setup common struct b43_wl */
4791 first = 1;
4792 err = b43_wireless_init(dev);
4793 if (err)
4794 goto out;
4795 wl = ssb_get_devtypedata(dev);
4796 B43_WARN_ON(!wl);
4797 }
4798 err = b43_one_core_attach(dev, wl);
4799 if (err)
4800 goto err_wireless_exit;
4801
4802 if (first) {
4803 err = ieee80211_register_hw(wl->hw);
4804 if (err)
4805 goto err_one_core_detach;
4806 }
4807
4808 out:
4809 return err;
4810
4811 err_one_core_detach:
4812 b43_one_core_detach(dev);
4813 err_wireless_exit:
4814 if (first)
4815 b43_wireless_exit(dev, wl);
4816 return err;
4817 }
4818
4819 static void b43_remove(struct ssb_device *dev)
4820 {
4821 struct b43_wl *wl = ssb_get_devtypedata(dev);
4822 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4823
4824 /* We must cancel any work here before unregistering from ieee80211,
4825 * as the ieee80211 unreg will destroy the workqueue. */
4826 cancel_work_sync(&wldev->restart_work);
4827
4828 B43_WARN_ON(!wl);
4829 if (wl->current_dev == wldev)
4830 ieee80211_unregister_hw(wl->hw);
4831
4832 b43_one_core_detach(dev);
4833
4834 if (list_empty(&wl->devlist)) {
4835 /* Last core on the chip unregistered.
4836 * We can destroy common struct b43_wl.
4837 */
4838 b43_wireless_exit(dev, wl);
4839 }
4840 }
4841
4842 /* Perform a hardware reset. This can be called from any context. */
4843 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4844 {
4845 /* Must avoid requeueing, if we are in shutdown. */
4846 if (b43_status(dev) < B43_STAT_INITIALIZED)
4847 return;
4848 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4849 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4850 }
4851
4852 #ifdef CONFIG_PM
4853
4854 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4855 {
4856 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4857 struct b43_wl *wl = wldev->wl;
4858
4859 b43dbg(wl, "Suspending...\n");
4860
4861 mutex_lock(&wl->mutex);
4862 wldev->suspend_in_progress = true;
4863 wldev->suspend_init_status = b43_status(wldev);
4864 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4865 b43_wireless_core_stop(wldev);
4866 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4867 b43_wireless_core_exit(wldev);
4868 mutex_unlock(&wl->mutex);
4869
4870 b43dbg(wl, "Device suspended.\n");
4871
4872 return 0;
4873 }
4874
4875 static int b43_resume(struct ssb_device *dev)
4876 {
4877 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4878 struct b43_wl *wl = wldev->wl;
4879 int err = 0;
4880
4881 b43dbg(wl, "Resuming...\n");
4882
4883 mutex_lock(&wl->mutex);
4884 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4885 err = b43_wireless_core_init(wldev);
4886 if (err) {
4887 b43err(wl, "Resume failed at core init\n");
4888 goto out;
4889 }
4890 }
4891 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4892 err = b43_wireless_core_start(wldev);
4893 if (err) {
4894 b43_leds_exit(wldev);
4895 b43_rng_exit(wldev->wl);
4896 b43_wireless_core_exit(wldev);
4897 b43err(wl, "Resume failed at core start\n");
4898 goto out;
4899 }
4900 }
4901 b43dbg(wl, "Device resumed.\n");
4902 out:
4903 wldev->suspend_in_progress = false;
4904 mutex_unlock(&wl->mutex);
4905 return err;
4906 }
4907
4908 #else /* CONFIG_PM */
4909 # define b43_suspend NULL
4910 # define b43_resume NULL
4911 #endif /* CONFIG_PM */
4912
4913 static struct ssb_driver b43_ssb_driver = {
4914 .name = KBUILD_MODNAME,
4915 .id_table = b43_ssb_tbl,
4916 .probe = b43_probe,
4917 .remove = b43_remove,
4918 .suspend = b43_suspend,
4919 .resume = b43_resume,
4920 };
4921
4922 static void b43_print_driverinfo(void)
4923 {
4924 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4925 *feat_leds = "", *feat_rfkill = "";
4926
4927 #ifdef CONFIG_B43_PCI_AUTOSELECT
4928 feat_pci = "P";
4929 #endif
4930 #ifdef CONFIG_B43_PCMCIA
4931 feat_pcmcia = "M";
4932 #endif
4933 #ifdef CONFIG_B43_NPHY
4934 feat_nphy = "N";
4935 #endif
4936 #ifdef CONFIG_B43_LEDS
4937 feat_leds = "L";
4938 #endif
4939 #ifdef CONFIG_B43_RFKILL
4940 feat_rfkill = "R";
4941 #endif
4942 printk(KERN_INFO "Broadcom 43xx driver loaded "
4943 "[ Features: %s%s%s%s%s, Firmware-ID: "
4944 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4945 feat_pci, feat_pcmcia, feat_nphy,
4946 feat_leds, feat_rfkill);
4947 }
4948
4949 static int __init b43_init(void)
4950 {
4951 int err;
4952
4953 b43_debugfs_init();
4954 err = b43_pcmcia_init();
4955 if (err)
4956 goto err_dfs_exit;
4957 err = ssb_driver_register(&b43_ssb_driver);
4958 if (err)
4959 goto err_pcmcia_exit;
4960 b43_print_driverinfo();
4961
4962 return err;
4963
4964 err_pcmcia_exit:
4965 b43_pcmcia_exit();
4966 err_dfs_exit:
4967 b43_debugfs_exit();
4968 return err;
4969 }
4970
4971 static void __exit b43_exit(void)
4972 {
4973 ssb_driver_unregister(&b43_ssb_driver);
4974 b43_pcmcia_exit();
4975 b43_debugfs_exit();
4976 }
4977
4978 module_init(b43_init)
4979 module_exit(b43_exit)
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree