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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 <m@bues.ch>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10 Copyright (c) 2010-2011 Rafał Miłecki <zajec5@gmail.com>
11
12 SDIO support
13 Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
14
15 Some parts of the code in this file are derived from the ipw2200
16 driver Copyright(c) 2003 - 2004 Intel Corporation.
17
18 This program is free software; you can redistribute it and/or modify
19 it under the terms of the GNU General Public License as published by
20 the Free Software Foundation; either version 2 of the License, or
21 (at your option) any later version.
22
23 This program is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 GNU General Public License for more details.
27
28 You should have received a copy of the GNU General Public License
29 along with this program; see the file COPYING. If not, write to
30 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
31 Boston, MA 02110-1301, USA.
32
33*/
34
35#include <linux/delay.h>
36#include <linux/init.h>
37#include <linux/module.h>
38#include <linux/if_arp.h>
39#include <linux/etherdevice.h>
40#include <linux/firmware.h>
41#include <linux/workqueue.h>
42#include <linux/skbuff.h>
43#include <linux/io.h>
44#include <linux/dma-mapping.h>
45#include <linux/slab.h>
46#include <asm/unaligned.h>
47
48#include "b43.h"
49#include "main.h"
50#include "debugfs.h"
51#include "phy_common.h"
52#include "phy_g.h"
53#include "phy_n.h"
54#include "dma.h"
55#include "pio.h"
56#include "sysfs.h"
57#include "xmit.h"
58#include "lo.h"
59#include "sdio.h"
60#include <linux/mmc/sdio_func.h>
61
62MODULE_DESCRIPTION("Broadcom B43 wireless driver");
63MODULE_AUTHOR("Martin Langer");
64MODULE_AUTHOR("Stefano Brivio");
65MODULE_AUTHOR("Michael Buesch");
66MODULE_AUTHOR("Gábor Stefanik");
67MODULE_AUTHOR("Rafał Miłecki");
68MODULE_LICENSE("GPL");
69
70MODULE_FIRMWARE("b43/ucode11.fw");
71MODULE_FIRMWARE("b43/ucode13.fw");
72MODULE_FIRMWARE("b43/ucode14.fw");
73MODULE_FIRMWARE("b43/ucode15.fw");
74MODULE_FIRMWARE("b43/ucode16_mimo.fw");
75MODULE_FIRMWARE("b43/ucode5.fw");
76MODULE_FIRMWARE("b43/ucode9.fw");
77
78static int modparam_bad_frames_preempt;
79module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
80MODULE_PARM_DESC(bad_frames_preempt,
81 "enable(1) / disable(0) Bad Frames Preemption");
82
83static char modparam_fwpostfix[16];
84module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
85MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
86
87static int modparam_hwpctl;
88module_param_named(hwpctl, modparam_hwpctl, int, 0444);
89MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
90
91static int modparam_nohwcrypt;
92module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
93MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
94
95static int modparam_hwtkip;
96module_param_named(hwtkip, modparam_hwtkip, int, 0444);
97MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
98
99static int modparam_qos = 1;
100module_param_named(qos, modparam_qos, int, 0444);
101MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
102
103static int modparam_btcoex = 1;
104module_param_named(btcoex, modparam_btcoex, int, 0444);
105MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
106
107int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
108module_param_named(verbose, b43_modparam_verbose, int, 0644);
109MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
110
111static int b43_modparam_pio = 0;
112module_param_named(pio, b43_modparam_pio, int, 0644);
113MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
114
115static int modparam_allhwsupport = !IS_ENABLED(CONFIG_BRCMSMAC);
116module_param_named(allhwsupport, modparam_allhwsupport, int, 0444);
117MODULE_PARM_DESC(allhwsupport, "Enable support for all hardware (even it if overlaps with the brcmsmac driver)");
118
119#ifdef CONFIG_B43_BCMA
120static const struct bcma_device_id b43_bcma_tbl[] = {
121 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x11, BCMA_ANY_CLASS),
122 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x15, BCMA_ANY_CLASS),
123 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x17, BCMA_ANY_CLASS),
124 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x18, BCMA_ANY_CLASS),
125 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1C, BCMA_ANY_CLASS),
126 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1D, BCMA_ANY_CLASS),
127 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1E, BCMA_ANY_CLASS),
128 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x28, BCMA_ANY_CLASS),
129 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x2A, BCMA_ANY_CLASS),
130 {},
131};
132MODULE_DEVICE_TABLE(bcma, b43_bcma_tbl);
133#endif
134
135#ifdef CONFIG_B43_SSB
136static const struct ssb_device_id b43_ssb_tbl[] = {
137 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
138 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
139 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
140 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
141 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
142 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
143 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
144 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
145 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
146 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
147 {},
148};
149MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
150#endif
151
152/* Channel and ratetables are shared for all devices.
153 * They can't be const, because ieee80211 puts some precalculated
154 * data in there. This data is the same for all devices, so we don't
155 * get concurrency issues */
156#define RATETAB_ENT(_rateid, _flags) \
157 { \
158 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
159 .hw_value = (_rateid), \
160 .flags = (_flags), \
161 }
162
163/*
164 * NOTE: When changing this, sync with xmit.c's
165 * b43_plcp_get_bitrate_idx_* functions!
166 */
167static struct ieee80211_rate __b43_ratetable[] = {
168 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
169 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
170 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
171 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
172 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
173 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
174 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
175 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
176 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
177 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
178 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
179 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
180};
181
182#define b43_a_ratetable (__b43_ratetable + 4)
183#define b43_a_ratetable_size 8
184#define b43_b_ratetable (__b43_ratetable + 0)
185#define b43_b_ratetable_size 4
186#define b43_g_ratetable (__b43_ratetable + 0)
187#define b43_g_ratetable_size 12
188
189#define CHAN2G(_channel, _freq, _flags) { \
190 .band = IEEE80211_BAND_2GHZ, \
191 .center_freq = (_freq), \
192 .hw_value = (_channel), \
193 .flags = (_flags), \
194 .max_antenna_gain = 0, \
195 .max_power = 30, \
196}
197static struct ieee80211_channel b43_2ghz_chantable[] = {
198 CHAN2G(1, 2412, 0),
199 CHAN2G(2, 2417, 0),
200 CHAN2G(3, 2422, 0),
201 CHAN2G(4, 2427, 0),
202 CHAN2G(5, 2432, 0),
203 CHAN2G(6, 2437, 0),
204 CHAN2G(7, 2442, 0),
205 CHAN2G(8, 2447, 0),
206 CHAN2G(9, 2452, 0),
207 CHAN2G(10, 2457, 0),
208 CHAN2G(11, 2462, 0),
209 CHAN2G(12, 2467, 0),
210 CHAN2G(13, 2472, 0),
211 CHAN2G(14, 2484, 0),
212};
213
214/* No support for the last 3 channels (12, 13, 14) */
215#define b43_2ghz_chantable_limited_size 11
216#undef CHAN2G
217
218#define CHAN4G(_channel, _flags) { \
219 .band = IEEE80211_BAND_5GHZ, \
220 .center_freq = 4000 + (5 * (_channel)), \
221 .hw_value = (_channel), \
222 .flags = (_flags), \
223 .max_antenna_gain = 0, \
224 .max_power = 30, \
225}
226#define CHAN5G(_channel, _flags) { \
227 .band = IEEE80211_BAND_5GHZ, \
228 .center_freq = 5000 + (5 * (_channel)), \
229 .hw_value = (_channel), \
230 .flags = (_flags), \
231 .max_antenna_gain = 0, \
232 .max_power = 30, \
233}
234static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
235 CHAN4G(184, 0), CHAN4G(186, 0),
236 CHAN4G(188, 0), CHAN4G(190, 0),
237 CHAN4G(192, 0), CHAN4G(194, 0),
238 CHAN4G(196, 0), CHAN4G(198, 0),
239 CHAN4G(200, 0), CHAN4G(202, 0),
240 CHAN4G(204, 0), CHAN4G(206, 0),
241 CHAN4G(208, 0), CHAN4G(210, 0),
242 CHAN4G(212, 0), CHAN4G(214, 0),
243 CHAN4G(216, 0), CHAN4G(218, 0),
244 CHAN4G(220, 0), CHAN4G(222, 0),
245 CHAN4G(224, 0), CHAN4G(226, 0),
246 CHAN4G(228, 0),
247 CHAN5G(32, 0), CHAN5G(34, 0),
248 CHAN5G(36, 0), CHAN5G(38, 0),
249 CHAN5G(40, 0), CHAN5G(42, 0),
250 CHAN5G(44, 0), CHAN5G(46, 0),
251 CHAN5G(48, 0), CHAN5G(50, 0),
252 CHAN5G(52, 0), CHAN5G(54, 0),
253 CHAN5G(56, 0), CHAN5G(58, 0),
254 CHAN5G(60, 0), CHAN5G(62, 0),
255 CHAN5G(64, 0), CHAN5G(66, 0),
256 CHAN5G(68, 0), CHAN5G(70, 0),
257 CHAN5G(72, 0), CHAN5G(74, 0),
258 CHAN5G(76, 0), CHAN5G(78, 0),
259 CHAN5G(80, 0), CHAN5G(82, 0),
260 CHAN5G(84, 0), CHAN5G(86, 0),
261 CHAN5G(88, 0), CHAN5G(90, 0),
262 CHAN5G(92, 0), CHAN5G(94, 0),
263 CHAN5G(96, 0), CHAN5G(98, 0),
264 CHAN5G(100, 0), CHAN5G(102, 0),
265 CHAN5G(104, 0), CHAN5G(106, 0),
266 CHAN5G(108, 0), CHAN5G(110, 0),
267 CHAN5G(112, 0), CHAN5G(114, 0),
268 CHAN5G(116, 0), CHAN5G(118, 0),
269 CHAN5G(120, 0), CHAN5G(122, 0),
270 CHAN5G(124, 0), CHAN5G(126, 0),
271 CHAN5G(128, 0), CHAN5G(130, 0),
272 CHAN5G(132, 0), CHAN5G(134, 0),
273 CHAN5G(136, 0), CHAN5G(138, 0),
274 CHAN5G(140, 0), CHAN5G(142, 0),
275 CHAN5G(144, 0), CHAN5G(145, 0),
276 CHAN5G(146, 0), CHAN5G(147, 0),
277 CHAN5G(148, 0), CHAN5G(149, 0),
278 CHAN5G(150, 0), CHAN5G(151, 0),
279 CHAN5G(152, 0), CHAN5G(153, 0),
280 CHAN5G(154, 0), CHAN5G(155, 0),
281 CHAN5G(156, 0), CHAN5G(157, 0),
282 CHAN5G(158, 0), CHAN5G(159, 0),
283 CHAN5G(160, 0), CHAN5G(161, 0),
284 CHAN5G(162, 0), CHAN5G(163, 0),
285 CHAN5G(164, 0), CHAN5G(165, 0),
286 CHAN5G(166, 0), CHAN5G(168, 0),
287 CHAN5G(170, 0), CHAN5G(172, 0),
288 CHAN5G(174, 0), CHAN5G(176, 0),
289 CHAN5G(178, 0), CHAN5G(180, 0),
290 CHAN5G(182, 0),
291};
292
293static struct ieee80211_channel b43_5ghz_nphy_chantable_limited[] = {
294 CHAN5G(36, 0), CHAN5G(40, 0),
295 CHAN5G(44, 0), CHAN5G(48, 0),
296 CHAN5G(149, 0), CHAN5G(153, 0),
297 CHAN5G(157, 0), CHAN5G(161, 0),
298 CHAN5G(165, 0),
299};
300
301static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
302 CHAN5G(34, 0), CHAN5G(36, 0),
303 CHAN5G(38, 0), CHAN5G(40, 0),
304 CHAN5G(42, 0), CHAN5G(44, 0),
305 CHAN5G(46, 0), CHAN5G(48, 0),
306 CHAN5G(52, 0), CHAN5G(56, 0),
307 CHAN5G(60, 0), CHAN5G(64, 0),
308 CHAN5G(100, 0), CHAN5G(104, 0),
309 CHAN5G(108, 0), CHAN5G(112, 0),
310 CHAN5G(116, 0), CHAN5G(120, 0),
311 CHAN5G(124, 0), CHAN5G(128, 0),
312 CHAN5G(132, 0), CHAN5G(136, 0),
313 CHAN5G(140, 0), CHAN5G(149, 0),
314 CHAN5G(153, 0), CHAN5G(157, 0),
315 CHAN5G(161, 0), CHAN5G(165, 0),
316 CHAN5G(184, 0), CHAN5G(188, 0),
317 CHAN5G(192, 0), CHAN5G(196, 0),
318 CHAN5G(200, 0), CHAN5G(204, 0),
319 CHAN5G(208, 0), CHAN5G(212, 0),
320 CHAN5G(216, 0),
321};
322#undef CHAN4G
323#undef CHAN5G
324
325static struct ieee80211_supported_band b43_band_5GHz_nphy = {
326 .band = IEEE80211_BAND_5GHZ,
327 .channels = b43_5ghz_nphy_chantable,
328 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
329 .bitrates = b43_a_ratetable,
330 .n_bitrates = b43_a_ratetable_size,
331};
332
333static struct ieee80211_supported_band b43_band_5GHz_nphy_limited = {
334 .band = IEEE80211_BAND_5GHZ,
335 .channels = b43_5ghz_nphy_chantable_limited,
336 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable_limited),
337 .bitrates = b43_a_ratetable,
338 .n_bitrates = b43_a_ratetable_size,
339};
340
341static struct ieee80211_supported_band b43_band_5GHz_aphy = {
342 .band = IEEE80211_BAND_5GHZ,
343 .channels = b43_5ghz_aphy_chantable,
344 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
345 .bitrates = b43_a_ratetable,
346 .n_bitrates = b43_a_ratetable_size,
347};
348
349static struct ieee80211_supported_band b43_band_2GHz = {
350 .band = IEEE80211_BAND_2GHZ,
351 .channels = b43_2ghz_chantable,
352 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
353 .bitrates = b43_g_ratetable,
354 .n_bitrates = b43_g_ratetable_size,
355};
356
357static struct ieee80211_supported_band b43_band_2ghz_limited = {
358 .band = IEEE80211_BAND_2GHZ,
359 .channels = b43_2ghz_chantable,
360 .n_channels = b43_2ghz_chantable_limited_size,
361 .bitrates = b43_g_ratetable,
362 .n_bitrates = b43_g_ratetable_size,
363};
364
365static void b43_wireless_core_exit(struct b43_wldev *dev);
366static int b43_wireless_core_init(struct b43_wldev *dev);
367static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
368static int b43_wireless_core_start(struct b43_wldev *dev);
369static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
370 struct ieee80211_vif *vif,
371 struct ieee80211_bss_conf *conf,
372 u32 changed);
373
374static int b43_ratelimit(struct b43_wl *wl)
375{
376 if (!wl || !wl->current_dev)
377 return 1;
378 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
379 return 1;
380 /* We are up and running.
381 * Ratelimit the messages to avoid DoS over the net. */
382 return net_ratelimit();
383}
384
385void b43info(struct b43_wl *wl, const char *fmt, ...)
386{
387 struct va_format vaf;
388 va_list args;
389
390 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
391 return;
392 if (!b43_ratelimit(wl))
393 return;
394
395 va_start(args, fmt);
396
397 vaf.fmt = fmt;
398 vaf.va = &args;
399
400 printk(KERN_INFO "b43-%s: %pV",
401 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
402
403 va_end(args);
404}
405
406void b43err(struct b43_wl *wl, const char *fmt, ...)
407{
408 struct va_format vaf;
409 va_list args;
410
411 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
412 return;
413 if (!b43_ratelimit(wl))
414 return;
415
416 va_start(args, fmt);
417
418 vaf.fmt = fmt;
419 vaf.va = &args;
420
421 printk(KERN_ERR "b43-%s ERROR: %pV",
422 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
423
424 va_end(args);
425}
426
427void b43warn(struct b43_wl *wl, const char *fmt, ...)
428{
429 struct va_format vaf;
430 va_list args;
431
432 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
433 return;
434 if (!b43_ratelimit(wl))
435 return;
436
437 va_start(args, fmt);
438
439 vaf.fmt = fmt;
440 vaf.va = &args;
441
442 printk(KERN_WARNING "b43-%s warning: %pV",
443 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
444
445 va_end(args);
446}
447
448void b43dbg(struct b43_wl *wl, const char *fmt, ...)
449{
450 struct va_format vaf;
451 va_list args;
452
453 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
454 return;
455
456 va_start(args, fmt);
457
458 vaf.fmt = fmt;
459 vaf.va = &args;
460
461 printk(KERN_DEBUG "b43-%s debug: %pV",
462 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
463
464 va_end(args);
465}
466
467static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
468{
469 u32 macctl;
470
471 B43_WARN_ON(offset % 4 != 0);
472
473 macctl = b43_read32(dev, B43_MMIO_MACCTL);
474 if (macctl & B43_MACCTL_BE)
475 val = swab32(val);
476
477 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
478 mmiowb();
479 b43_write32(dev, B43_MMIO_RAM_DATA, val);
480}
481
482static inline void b43_shm_control_word(struct b43_wldev *dev,
483 u16 routing, u16 offset)
484{
485 u32 control;
486
487 /* "offset" is the WORD offset. */
488 control = routing;
489 control <<= 16;
490 control |= offset;
491 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
492}
493
494u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
495{
496 u32 ret;
497
498 if (routing == B43_SHM_SHARED) {
499 B43_WARN_ON(offset & 0x0001);
500 if (offset & 0x0003) {
501 /* Unaligned access */
502 b43_shm_control_word(dev, routing, offset >> 2);
503 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
504 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
505 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
506
507 goto out;
508 }
509 offset >>= 2;
510 }
511 b43_shm_control_word(dev, routing, offset);
512 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
513out:
514 return ret;
515}
516
517u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
518{
519 u16 ret;
520
521 if (routing == B43_SHM_SHARED) {
522 B43_WARN_ON(offset & 0x0001);
523 if (offset & 0x0003) {
524 /* Unaligned access */
525 b43_shm_control_word(dev, routing, offset >> 2);
526 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
527
528 goto out;
529 }
530 offset >>= 2;
531 }
532 b43_shm_control_word(dev, routing, offset);
533 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
534out:
535 return ret;
536}
537
538void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
539{
540 if (routing == B43_SHM_SHARED) {
541 B43_WARN_ON(offset & 0x0001);
542 if (offset & 0x0003) {
543 /* Unaligned access */
544 b43_shm_control_word(dev, routing, offset >> 2);
545 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
546 value & 0xFFFF);
547 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
548 b43_write16(dev, B43_MMIO_SHM_DATA,
549 (value >> 16) & 0xFFFF);
550 return;
551 }
552 offset >>= 2;
553 }
554 b43_shm_control_word(dev, routing, offset);
555 b43_write32(dev, B43_MMIO_SHM_DATA, value);
556}
557
558void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
559{
560 if (routing == B43_SHM_SHARED) {
561 B43_WARN_ON(offset & 0x0001);
562 if (offset & 0x0003) {
563 /* Unaligned access */
564 b43_shm_control_word(dev, routing, offset >> 2);
565 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
566 return;
567 }
568 offset >>= 2;
569 }
570 b43_shm_control_word(dev, routing, offset);
571 b43_write16(dev, B43_MMIO_SHM_DATA, value);
572}
573
574/* Read HostFlags */
575u64 b43_hf_read(struct b43_wldev *dev)
576{
577 u64 ret;
578
579 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3);
580 ret <<= 16;
581 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2);
582 ret <<= 16;
583 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1);
584
585 return ret;
586}
587
588/* Write HostFlags */
589void b43_hf_write(struct b43_wldev *dev, u64 value)
590{
591 u16 lo, mi, hi;
592
593 lo = (value & 0x00000000FFFFULL);
594 mi = (value & 0x0000FFFF0000ULL) >> 16;
595 hi = (value & 0xFFFF00000000ULL) >> 32;
596 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1, lo);
597 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2, mi);
598 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3, hi);
599}
600
601/* Read the firmware capabilities bitmask (Opensource firmware only) */
602static u16 b43_fwcapa_read(struct b43_wldev *dev)
603{
604 B43_WARN_ON(!dev->fw.opensource);
605 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
606}
607
608void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
609{
610 u32 low, high;
611
612 B43_WARN_ON(dev->dev->core_rev < 3);
613
614 /* The hardware guarantees us an atomic read, if we
615 * read the low register first. */
616 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
617 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
618
619 *tsf = high;
620 *tsf <<= 32;
621 *tsf |= low;
622}
623
624static void b43_time_lock(struct b43_wldev *dev)
625{
626 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_TBTTHOLD);
627 /* Commit the write */
628 b43_read32(dev, B43_MMIO_MACCTL);
629}
630
631static void b43_time_unlock(struct b43_wldev *dev)
632{
633 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_TBTTHOLD, 0);
634 /* Commit the write */
635 b43_read32(dev, B43_MMIO_MACCTL);
636}
637
638static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
639{
640 u32 low, high;
641
642 B43_WARN_ON(dev->dev->core_rev < 3);
643
644 low = tsf;
645 high = (tsf >> 32);
646 /* The hardware guarantees us an atomic write, if we
647 * write the low register first. */
648 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
649 mmiowb();
650 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
651 mmiowb();
652}
653
654void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
655{
656 b43_time_lock(dev);
657 b43_tsf_write_locked(dev, tsf);
658 b43_time_unlock(dev);
659}
660
661static
662void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
663{
664 static const u8 zero_addr[ETH_ALEN] = { 0 };
665 u16 data;
666
667 if (!mac)
668 mac = zero_addr;
669
670 offset |= 0x0020;
671 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
672
673 data = mac[0];
674 data |= mac[1] << 8;
675 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
676 data = mac[2];
677 data |= mac[3] << 8;
678 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
679 data = mac[4];
680 data |= mac[5] << 8;
681 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
682}
683
684static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
685{
686 const u8 *mac;
687 const u8 *bssid;
688 u8 mac_bssid[ETH_ALEN * 2];
689 int i;
690 u32 tmp;
691
692 bssid = dev->wl->bssid;
693 mac = dev->wl->mac_addr;
694
695 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
696
697 memcpy(mac_bssid, mac, ETH_ALEN);
698 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
699
700 /* Write our MAC address and BSSID to template ram */
701 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
702 tmp = (u32) (mac_bssid[i + 0]);
703 tmp |= (u32) (mac_bssid[i + 1]) << 8;
704 tmp |= (u32) (mac_bssid[i + 2]) << 16;
705 tmp |= (u32) (mac_bssid[i + 3]) << 24;
706 b43_ram_write(dev, 0x20 + i, tmp);
707 }
708}
709
710static void b43_upload_card_macaddress(struct b43_wldev *dev)
711{
712 b43_write_mac_bssid_templates(dev);
713 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
714}
715
716static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
717{
718 /* slot_time is in usec. */
719 /* This test used to exit for all but a G PHY. */
720 if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
721 return;
722 b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
723 /* Shared memory location 0x0010 is the slot time and should be
724 * set to slot_time; however, this register is initially 0 and changing
725 * the value adversely affects the transmit rate for BCM4311
726 * devices. Until this behavior is unterstood, delete this step
727 *
728 * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
729 */
730}
731
732static void b43_short_slot_timing_enable(struct b43_wldev *dev)
733{
734 b43_set_slot_time(dev, 9);
735}
736
737static void b43_short_slot_timing_disable(struct b43_wldev *dev)
738{
739 b43_set_slot_time(dev, 20);
740}
741
742/* DummyTransmission function, as documented on
743 * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
744 */
745void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
746{
747 struct b43_phy *phy = &dev->phy;
748 unsigned int i, max_loop;
749 u16 value;
750 u32 buffer[5] = {
751 0x00000000,
752 0x00D40000,
753 0x00000000,
754 0x01000000,
755 0x00000000,
756 };
757
758 if (ofdm) {
759 max_loop = 0x1E;
760 buffer[0] = 0x000201CC;
761 } else {
762 max_loop = 0xFA;
763 buffer[0] = 0x000B846E;
764 }
765
766 for (i = 0; i < 5; i++)
767 b43_ram_write(dev, i * 4, buffer[i]);
768
769 b43_write16(dev, B43_MMIO_XMTSEL, 0x0000);
770
771 if (dev->dev->core_rev < 11)
772 b43_write16(dev, B43_MMIO_WEPCTL, 0x0000);
773 else
774 b43_write16(dev, B43_MMIO_WEPCTL, 0x0100);
775
776 value = (ofdm ? 0x41 : 0x40);
777 b43_write16(dev, B43_MMIO_TXE0_PHYCTL, value);
778 if (phy->type == B43_PHYTYPE_N || phy->type == B43_PHYTYPE_LP ||
779 phy->type == B43_PHYTYPE_LCN)
780 b43_write16(dev, B43_MMIO_TXE0_PHYCTL1, 0x1A02);
781
782 b43_write16(dev, B43_MMIO_TXE0_WM_0, 0x0000);
783 b43_write16(dev, B43_MMIO_TXE0_WM_1, 0x0000);
784
785 b43_write16(dev, B43_MMIO_XMTTPLATETXPTR, 0x0000);
786 b43_write16(dev, B43_MMIO_XMTTXCNT, 0x0014);
787 b43_write16(dev, B43_MMIO_XMTSEL, 0x0826);
788 b43_write16(dev, B43_MMIO_TXE0_CTL, 0x0000);
789
790 if (!pa_on && phy->type == B43_PHYTYPE_N)
791 ; /*b43_nphy_pa_override(dev, false) */
792
793 switch (phy->type) {
794 case B43_PHYTYPE_N:
795 case B43_PHYTYPE_LCN:
796 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x00D0);
797 break;
798 case B43_PHYTYPE_LP:
799 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0050);
800 break;
801 default:
802 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0030);
803 }
804 b43_read16(dev, B43_MMIO_TXE0_AUX);
805
806 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
807 b43_radio_write16(dev, 0x0051, 0x0017);
808 for (i = 0x00; i < max_loop; i++) {
809 value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
810 if (value & 0x0080)
811 break;
812 udelay(10);
813 }
814 for (i = 0x00; i < 0x0A; i++) {
815 value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
816 if (value & 0x0400)
817 break;
818 udelay(10);
819 }
820 for (i = 0x00; i < 0x19; i++) {
821 value = b43_read16(dev, B43_MMIO_IFSSTAT);
822 if (!(value & 0x0100))
823 break;
824 udelay(10);
825 }
826 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
827 b43_radio_write16(dev, 0x0051, 0x0037);
828}
829
830static void key_write(struct b43_wldev *dev,
831 u8 index, u8 algorithm, const u8 *key)
832{
833 unsigned int i;
834 u32 offset;
835 u16 value;
836 u16 kidx;
837
838 /* Key index/algo block */
839 kidx = b43_kidx_to_fw(dev, index);
840 value = ((kidx << 4) | algorithm);
841 b43_shm_write16(dev, B43_SHM_SHARED,
842 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
843
844 /* Write the key to the Key Table Pointer offset */
845 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
846 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
847 value = key[i];
848 value |= (u16) (key[i + 1]) << 8;
849 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
850 }
851}
852
853static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
854{
855 u32 addrtmp[2] = { 0, 0, };
856 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
857
858 if (b43_new_kidx_api(dev))
859 pairwise_keys_start = B43_NR_GROUP_KEYS;
860
861 B43_WARN_ON(index < pairwise_keys_start);
862 /* We have four default TX keys and possibly four default RX keys.
863 * Physical mac 0 is mapped to physical key 4 or 8, depending
864 * on the firmware version.
865 * So we must adjust the index here.
866 */
867 index -= pairwise_keys_start;
868 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
869
870 if (addr) {
871 addrtmp[0] = addr[0];
872 addrtmp[0] |= ((u32) (addr[1]) << 8);
873 addrtmp[0] |= ((u32) (addr[2]) << 16);
874 addrtmp[0] |= ((u32) (addr[3]) << 24);
875 addrtmp[1] = addr[4];
876 addrtmp[1] |= ((u32) (addr[5]) << 8);
877 }
878
879 /* Receive match transmitter address (RCMTA) mechanism */
880 b43_shm_write32(dev, B43_SHM_RCMTA,
881 (index * 2) + 0, addrtmp[0]);
882 b43_shm_write16(dev, B43_SHM_RCMTA,
883 (index * 2) + 1, addrtmp[1]);
884}
885
886/* The ucode will use phase1 key with TEK key to decrypt rx packets.
887 * When a packet is received, the iv32 is checked.
888 * - if it doesn't the packet is returned without modification (and software
889 * decryption can be done). That's what happen when iv16 wrap.
890 * - if it does, the rc4 key is computed, and decryption is tried.
891 * Either it will success and B43_RX_MAC_DEC is returned,
892 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
893 * and the packet is not usable (it got modified by the ucode).
894 * So in order to never have B43_RX_MAC_DECERR, we should provide
895 * a iv32 and phase1key that match. Because we drop packets in case of
896 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
897 * packets will be lost without higher layer knowing (ie no resync possible
898 * until next wrap).
899 *
900 * NOTE : this should support 50 key like RCMTA because
901 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
902 */
903static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
904 u16 *phase1key)
905{
906 unsigned int i;
907 u32 offset;
908 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
909
910 if (!modparam_hwtkip)
911 return;
912
913 if (b43_new_kidx_api(dev))
914 pairwise_keys_start = B43_NR_GROUP_KEYS;
915
916 B43_WARN_ON(index < pairwise_keys_start);
917 /* We have four default TX keys and possibly four default RX keys.
918 * Physical mac 0 is mapped to physical key 4 or 8, depending
919 * on the firmware version.
920 * So we must adjust the index here.
921 */
922 index -= pairwise_keys_start;
923 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
924
925 if (b43_debug(dev, B43_DBG_KEYS)) {
926 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
927 index, iv32);
928 }
929 /* Write the key to the RX tkip shared mem */
930 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
931 for (i = 0; i < 10; i += 2) {
932 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
933 phase1key ? phase1key[i / 2] : 0);
934 }
935 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
936 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
937}
938
939static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
940 struct ieee80211_vif *vif,
941 struct ieee80211_key_conf *keyconf,
942 struct ieee80211_sta *sta,
943 u32 iv32, u16 *phase1key)
944{
945 struct b43_wl *wl = hw_to_b43_wl(hw);
946 struct b43_wldev *dev;
947 int index = keyconf->hw_key_idx;
948
949 if (B43_WARN_ON(!modparam_hwtkip))
950 return;
951
952 /* This is only called from the RX path through mac80211, where
953 * our mutex is already locked. */
954 B43_WARN_ON(!mutex_is_locked(&wl->mutex));
955 dev = wl->current_dev;
956 B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
957
958 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
959
960 rx_tkip_phase1_write(dev, index, iv32, phase1key);
961 /* only pairwise TKIP keys are supported right now */
962 if (WARN_ON(!sta))
963 return;
964 keymac_write(dev, index, sta->addr);
965}
966
967static void do_key_write(struct b43_wldev *dev,
968 u8 index, u8 algorithm,
969 const u8 *key, size_t key_len, const u8 *mac_addr)
970{
971 u8 buf[B43_SEC_KEYSIZE] = { 0, };
972 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
973
974 if (b43_new_kidx_api(dev))
975 pairwise_keys_start = B43_NR_GROUP_KEYS;
976
977 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
978 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
979
980 if (index >= pairwise_keys_start)
981 keymac_write(dev, index, NULL); /* First zero out mac. */
982 if (algorithm == B43_SEC_ALGO_TKIP) {
983 /*
984 * We should provide an initial iv32, phase1key pair.
985 * We could start with iv32=0 and compute the corresponding
986 * phase1key, but this means calling ieee80211_get_tkip_key
987 * with a fake skb (or export other tkip function).
988 * Because we are lazy we hope iv32 won't start with
989 * 0xffffffff and let's b43_op_update_tkip_key provide a
990 * correct pair.
991 */
992 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
993 } else if (index >= pairwise_keys_start) /* clear it */
994 rx_tkip_phase1_write(dev, index, 0, NULL);
995 if (key)
996 memcpy(buf, key, key_len);
997 key_write(dev, index, algorithm, buf);
998 if (index >= pairwise_keys_start)
999 keymac_write(dev, index, mac_addr);
1000
1001 dev->key[index].algorithm = algorithm;
1002}
1003
1004static int b43_key_write(struct b43_wldev *dev,
1005 int index, u8 algorithm,
1006 const u8 *key, size_t key_len,
1007 const u8 *mac_addr,
1008 struct ieee80211_key_conf *keyconf)
1009{
1010 int i;
1011 int pairwise_keys_start;
1012
1013 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
1014 * - Temporal Encryption Key (128 bits)
1015 * - Temporal Authenticator Tx MIC Key (64 bits)
1016 * - Temporal Authenticator Rx MIC Key (64 bits)
1017 *
1018 * Hardware only store TEK
1019 */
1020 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
1021 key_len = 16;
1022 if (key_len > B43_SEC_KEYSIZE)
1023 return -EINVAL;
1024 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
1025 /* Check that we don't already have this key. */
1026 B43_WARN_ON(dev->key[i].keyconf == keyconf);
1027 }
1028 if (index < 0) {
1029 /* Pairwise key. Get an empty slot for the key. */
1030 if (b43_new_kidx_api(dev))
1031 pairwise_keys_start = B43_NR_GROUP_KEYS;
1032 else
1033 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1034 for (i = pairwise_keys_start;
1035 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
1036 i++) {
1037 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
1038 if (!dev->key[i].keyconf) {
1039 /* found empty */
1040 index = i;
1041 break;
1042 }
1043 }
1044 if (index < 0) {
1045 b43warn(dev->wl, "Out of hardware key memory\n");
1046 return -ENOSPC;
1047 }
1048 } else
1049 B43_WARN_ON(index > 3);
1050
1051 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
1052 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1053 /* Default RX key */
1054 B43_WARN_ON(mac_addr);
1055 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
1056 }
1057 keyconf->hw_key_idx = index;
1058 dev->key[index].keyconf = keyconf;
1059
1060 return 0;
1061}
1062
1063static int b43_key_clear(struct b43_wldev *dev, int index)
1064{
1065 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
1066 return -EINVAL;
1067 do_key_write(dev, index, B43_SEC_ALGO_NONE,
1068 NULL, B43_SEC_KEYSIZE, NULL);
1069 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1070 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
1071 NULL, B43_SEC_KEYSIZE, NULL);
1072 }
1073 dev->key[index].keyconf = NULL;
1074
1075 return 0;
1076}
1077
1078static void b43_clear_keys(struct b43_wldev *dev)
1079{
1080 int i, count;
1081
1082 if (b43_new_kidx_api(dev))
1083 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1084 else
1085 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1086 for (i = 0; i < count; i++)
1087 b43_key_clear(dev, i);
1088}
1089
1090static void b43_dump_keymemory(struct b43_wldev *dev)
1091{
1092 unsigned int i, index, count, offset, pairwise_keys_start;
1093 u8 mac[ETH_ALEN];
1094 u16 algo;
1095 u32 rcmta0;
1096 u16 rcmta1;
1097 u64 hf;
1098 struct b43_key *key;
1099
1100 if (!b43_debug(dev, B43_DBG_KEYS))
1101 return;
1102
1103 hf = b43_hf_read(dev);
1104 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1105 !!(hf & B43_HF_USEDEFKEYS));
1106 if (b43_new_kidx_api(dev)) {
1107 pairwise_keys_start = B43_NR_GROUP_KEYS;
1108 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1109 } else {
1110 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1111 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1112 }
1113 for (index = 0; index < count; index++) {
1114 key = &(dev->key[index]);
1115 printk(KERN_DEBUG "Key slot %02u: %s",
1116 index, (key->keyconf == NULL) ? " " : "*");
1117 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1118 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1119 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1120 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1121 }
1122
1123 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1124 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1125 printk(" Algo: %04X/%02X", algo, key->algorithm);
1126
1127 if (index >= pairwise_keys_start) {
1128 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1129 printk(" TKIP: ");
1130 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1131 for (i = 0; i < 14; i += 2) {
1132 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1133 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1134 }
1135 }
1136 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1137 ((index - pairwise_keys_start) * 2) + 0);
1138 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1139 ((index - pairwise_keys_start) * 2) + 1);
1140 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1141 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1142 printk(" MAC: %pM", mac);
1143 } else
1144 printk(" DEFAULT KEY");
1145 printk("\n");
1146 }
1147}
1148
1149void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1150{
1151 u32 macctl;
1152 u16 ucstat;
1153 bool hwps;
1154 bool awake;
1155 int i;
1156
1157 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1158 (ps_flags & B43_PS_DISABLED));
1159 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1160
1161 if (ps_flags & B43_PS_ENABLED) {
1162 hwps = true;
1163 } else if (ps_flags & B43_PS_DISABLED) {
1164 hwps = false;
1165 } else {
1166 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1167 // and thus is not an AP and we are associated, set bit 25
1168 }
1169 if (ps_flags & B43_PS_AWAKE) {
1170 awake = true;
1171 } else if (ps_flags & B43_PS_ASLEEP) {
1172 awake = false;
1173 } else {
1174 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1175 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1176 // successful, set bit26
1177 }
1178
1179/* FIXME: For now we force awake-on and hwps-off */
1180 hwps = false;
1181 awake = true;
1182
1183 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1184 if (hwps)
1185 macctl |= B43_MACCTL_HWPS;
1186 else
1187 macctl &= ~B43_MACCTL_HWPS;
1188 if (awake)
1189 macctl |= B43_MACCTL_AWAKE;
1190 else
1191 macctl &= ~B43_MACCTL_AWAKE;
1192 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1193 /* Commit write */
1194 b43_read32(dev, B43_MMIO_MACCTL);
1195 if (awake && dev->dev->core_rev >= 5) {
1196 /* Wait for the microcode to wake up. */
1197 for (i = 0; i < 100; i++) {
1198 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1199 B43_SHM_SH_UCODESTAT);
1200 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1201 break;
1202 udelay(10);
1203 }
1204 }
1205}
1206
1207/* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
1208void b43_wireless_core_phy_pll_reset(struct b43_wldev *dev)
1209{
1210 struct bcma_drv_cc *bcma_cc __maybe_unused;
1211 struct ssb_chipcommon *ssb_cc __maybe_unused;
1212
1213 switch (dev->dev->bus_type) {
1214#ifdef CONFIG_B43_BCMA
1215 case B43_BUS_BCMA:
1216 bcma_cc = &dev->dev->bdev->bus->drv_cc;
1217
1218 bcma_cc_write32(bcma_cc, BCMA_CC_PMU_CHIPCTL_ADDR, 0);
1219 bcma_cc_mask32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, ~0x4);
1220 bcma_cc_set32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, 0x4);
1221 bcma_cc_mask32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, ~0x4);
1222 break;
1223#endif
1224#ifdef CONFIG_B43_SSB
1225 case B43_BUS_SSB:
1226 ssb_cc = &dev->dev->sdev->bus->chipco;
1227
1228 chipco_write32(ssb_cc, SSB_CHIPCO_CHIPCTL_ADDR, 0);
1229 chipco_mask32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, ~0x4);
1230 chipco_set32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, 0x4);
1231 chipco_mask32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, ~0x4);
1232 break;
1233#endif
1234 }
1235}
1236
1237#ifdef CONFIG_B43_BCMA
1238static void b43_bcma_phy_reset(struct b43_wldev *dev)
1239{
1240 u32 flags;
1241
1242 /* Put PHY into reset */
1243 flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1244 flags |= B43_BCMA_IOCTL_PHY_RESET;
1245 flags |= B43_BCMA_IOCTL_PHY_BW_20MHZ; /* Make 20 MHz def */
1246 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
1247 udelay(2);
1248
1249 b43_phy_take_out_of_reset(dev);
1250}
1251
1252static void b43_bcma_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1253{
1254 u32 req = B43_BCMA_CLKCTLST_80211_PLL_REQ |
1255 B43_BCMA_CLKCTLST_PHY_PLL_REQ;
1256 u32 status = B43_BCMA_CLKCTLST_80211_PLL_ST |
1257 B43_BCMA_CLKCTLST_PHY_PLL_ST;
1258 u32 flags;
1259
1260 flags = B43_BCMA_IOCTL_PHY_CLKEN;
1261 if (gmode)
1262 flags |= B43_BCMA_IOCTL_GMODE;
1263 b43_device_enable(dev, flags);
1264
1265 if (dev->phy.type == B43_PHYTYPE_AC) {
1266 u16 tmp;
1267
1268 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1269 tmp &= ~B43_BCMA_IOCTL_DAC;
1270 tmp |= 0x100;
1271 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
1272
1273 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1274 tmp &= ~B43_BCMA_IOCTL_PHY_CLKEN;
1275 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
1276
1277 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1278 tmp |= B43_BCMA_IOCTL_PHY_CLKEN;
1279 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
1280 }
1281
1282 bcma_core_set_clockmode(dev->dev->bdev, BCMA_CLKMODE_FAST);
1283 b43_bcma_phy_reset(dev);
1284 bcma_core_pll_ctl(dev->dev->bdev, req, status, true);
1285}
1286#endif
1287
1288#ifdef CONFIG_B43_SSB
1289static void b43_ssb_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1290{
1291 u32 flags = 0;
1292
1293 if (gmode)
1294 flags |= B43_TMSLOW_GMODE;
1295 flags |= B43_TMSLOW_PHYCLKEN;
1296 flags |= B43_TMSLOW_PHYRESET;
1297 if (dev->phy.type == B43_PHYTYPE_N)
1298 flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */
1299 b43_device_enable(dev, flags);
1300 msleep(2); /* Wait for the PLL to turn on. */
1301
1302 b43_phy_take_out_of_reset(dev);
1303}
1304#endif
1305
1306void b43_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1307{
1308 u32 macctl;
1309
1310 switch (dev->dev->bus_type) {
1311#ifdef CONFIG_B43_BCMA
1312 case B43_BUS_BCMA:
1313 b43_bcma_wireless_core_reset(dev, gmode);
1314 break;
1315#endif
1316#ifdef CONFIG_B43_SSB
1317 case B43_BUS_SSB:
1318 b43_ssb_wireless_core_reset(dev, gmode);
1319 break;
1320#endif
1321 }
1322
1323 /* Turn Analog ON, but only if we already know the PHY-type.
1324 * This protects against very early setup where we don't know the
1325 * PHY-type, yet. wireless_core_reset will be called once again later,
1326 * when we know the PHY-type. */
1327 if (dev->phy.ops)
1328 dev->phy.ops->switch_analog(dev, 1);
1329
1330 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1331 macctl &= ~B43_MACCTL_GMODE;
1332 if (gmode)
1333 macctl |= B43_MACCTL_GMODE;
1334 macctl |= B43_MACCTL_IHR_ENABLED;
1335 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1336}
1337
1338static void handle_irq_transmit_status(struct b43_wldev *dev)
1339{
1340 u32 v0, v1;
1341 u16 tmp;
1342 struct b43_txstatus stat;
1343
1344 while (1) {
1345 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1346 if (!(v0 & 0x00000001))
1347 break;
1348 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1349
1350 stat.cookie = (v0 >> 16);
1351 stat.seq = (v1 & 0x0000FFFF);
1352 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1353 tmp = (v0 & 0x0000FFFF);
1354 stat.frame_count = ((tmp & 0xF000) >> 12);
1355 stat.rts_count = ((tmp & 0x0F00) >> 8);
1356 stat.supp_reason = ((tmp & 0x001C) >> 2);
1357 stat.pm_indicated = !!(tmp & 0x0080);
1358 stat.intermediate = !!(tmp & 0x0040);
1359 stat.for_ampdu = !!(tmp & 0x0020);
1360 stat.acked = !!(tmp & 0x0002);
1361
1362 b43_handle_txstatus(dev, &stat);
1363 }
1364}
1365
1366static void drain_txstatus_queue(struct b43_wldev *dev)
1367{
1368 u32 dummy;
1369
1370 if (dev->dev->core_rev < 5)
1371 return;
1372 /* Read all entries from the microcode TXstatus FIFO
1373 * and throw them away.
1374 */
1375 while (1) {
1376 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1377 if (!(dummy & 0x00000001))
1378 break;
1379 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1380 }
1381}
1382
1383static u32 b43_jssi_read(struct b43_wldev *dev)
1384{
1385 u32 val = 0;
1386
1387 val = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI1);
1388 val <<= 16;
1389 val |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI0);
1390
1391 return val;
1392}
1393
1394static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1395{
1396 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI0,
1397 (jssi & 0x0000FFFF));
1398 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI1,
1399 (jssi & 0xFFFF0000) >> 16);
1400}
1401
1402static void b43_generate_noise_sample(struct b43_wldev *dev)
1403{
1404 b43_jssi_write(dev, 0x7F7F7F7F);
1405 b43_write32(dev, B43_MMIO_MACCMD,
1406 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1407}
1408
1409static void b43_calculate_link_quality(struct b43_wldev *dev)
1410{
1411 /* Top half of Link Quality calculation. */
1412
1413 if (dev->phy.type != B43_PHYTYPE_G)
1414 return;
1415 if (dev->noisecalc.calculation_running)
1416 return;
1417 dev->noisecalc.calculation_running = true;
1418 dev->noisecalc.nr_samples = 0;
1419
1420 b43_generate_noise_sample(dev);
1421}
1422
1423static void handle_irq_noise(struct b43_wldev *dev)
1424{
1425 struct b43_phy_g *phy = dev->phy.g;
1426 u16 tmp;
1427 u8 noise[4];
1428 u8 i, j;
1429 s32 average;
1430
1431 /* Bottom half of Link Quality calculation. */
1432
1433 if (dev->phy.type != B43_PHYTYPE_G)
1434 return;
1435
1436 /* Possible race condition: It might be possible that the user
1437 * changed to a different channel in the meantime since we
1438 * started the calculation. We ignore that fact, since it's
1439 * not really that much of a problem. The background noise is
1440 * an estimation only anyway. Slightly wrong results will get damped
1441 * by the averaging of the 8 sample rounds. Additionally the
1442 * value is shortlived. So it will be replaced by the next noise
1443 * calculation round soon. */
1444
1445 B43_WARN_ON(!dev->noisecalc.calculation_running);
1446 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1447 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1448 noise[2] == 0x7F || noise[3] == 0x7F)
1449 goto generate_new;
1450
1451 /* Get the noise samples. */
1452 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1453 i = dev->noisecalc.nr_samples;
1454 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1455 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1456 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1457 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1458 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1459 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1460 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1461 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1462 dev->noisecalc.nr_samples++;
1463 if (dev->noisecalc.nr_samples == 8) {
1464 /* Calculate the Link Quality by the noise samples. */
1465 average = 0;
1466 for (i = 0; i < 8; i++) {
1467 for (j = 0; j < 4; j++)
1468 average += dev->noisecalc.samples[i][j];
1469 }
1470 average /= (8 * 4);
1471 average *= 125;
1472 average += 64;
1473 average /= 128;
1474 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1475 tmp = (tmp / 128) & 0x1F;
1476 if (tmp >= 8)
1477 average += 2;
1478 else
1479 average -= 25;
1480 if (tmp == 8)
1481 average -= 72;
1482 else
1483 average -= 48;
1484
1485 dev->stats.link_noise = average;
1486 dev->noisecalc.calculation_running = false;
1487 return;
1488 }
1489generate_new:
1490 b43_generate_noise_sample(dev);
1491}
1492
1493static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1494{
1495 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1496 ///TODO: PS TBTT
1497 } else {
1498 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1499 b43_power_saving_ctl_bits(dev, 0);
1500 }
1501 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1502 dev->dfq_valid = true;
1503}
1504
1505static void handle_irq_atim_end(struct b43_wldev *dev)
1506{
1507 if (dev->dfq_valid) {
1508 b43_write32(dev, B43_MMIO_MACCMD,
1509 b43_read32(dev, B43_MMIO_MACCMD)
1510 | B43_MACCMD_DFQ_VALID);
1511 dev->dfq_valid = false;
1512 }
1513}
1514
1515static void handle_irq_pmq(struct b43_wldev *dev)
1516{
1517 u32 tmp;
1518
1519 //TODO: AP mode.
1520
1521 while (1) {
1522 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1523 if (!(tmp & 0x00000008))
1524 break;
1525 }
1526 /* 16bit write is odd, but correct. */
1527 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1528}
1529
1530static void b43_write_template_common(struct b43_wldev *dev,
1531 const u8 *data, u16 size,
1532 u16 ram_offset,
1533 u16 shm_size_offset, u8 rate)
1534{
1535 u32 i, tmp;
1536 struct b43_plcp_hdr4 plcp;
1537
1538 plcp.data = 0;
1539 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1540 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1541 ram_offset += sizeof(u32);
1542 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1543 * So leave the first two bytes of the next write blank.
1544 */
1545 tmp = (u32) (data[0]) << 16;
1546 tmp |= (u32) (data[1]) << 24;
1547 b43_ram_write(dev, ram_offset, tmp);
1548 ram_offset += sizeof(u32);
1549 for (i = 2; i < size; i += sizeof(u32)) {
1550 tmp = (u32) (data[i + 0]);
1551 if (i + 1 < size)
1552 tmp |= (u32) (data[i + 1]) << 8;
1553 if (i + 2 < size)
1554 tmp |= (u32) (data[i + 2]) << 16;
1555 if (i + 3 < size)
1556 tmp |= (u32) (data[i + 3]) << 24;
1557 b43_ram_write(dev, ram_offset + i - 2, tmp);
1558 }
1559 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1560 size + sizeof(struct b43_plcp_hdr6));
1561}
1562
1563/* Check if the use of the antenna that ieee80211 told us to
1564 * use is possible. This will fall back to DEFAULT.
1565 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1566u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1567 u8 antenna_nr)
1568{
1569 u8 antenna_mask;
1570
1571 if (antenna_nr == 0) {
1572 /* Zero means "use default antenna". That's always OK. */
1573 return 0;
1574 }
1575
1576 /* Get the mask of available antennas. */
1577 if (dev->phy.gmode)
1578 antenna_mask = dev->dev->bus_sprom->ant_available_bg;
1579 else
1580 antenna_mask = dev->dev->bus_sprom->ant_available_a;
1581
1582 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1583 /* This antenna is not available. Fall back to default. */
1584 return 0;
1585 }
1586
1587 return antenna_nr;
1588}
1589
1590/* Convert a b43 antenna number value to the PHY TX control value. */
1591static u16 b43_antenna_to_phyctl(int antenna)
1592{
1593 switch (antenna) {
1594 case B43_ANTENNA0:
1595 return B43_TXH_PHY_ANT0;
1596 case B43_ANTENNA1:
1597 return B43_TXH_PHY_ANT1;
1598 case B43_ANTENNA2:
1599 return B43_TXH_PHY_ANT2;
1600 case B43_ANTENNA3:
1601 return B43_TXH_PHY_ANT3;
1602 case B43_ANTENNA_AUTO0:
1603 case B43_ANTENNA_AUTO1:
1604 return B43_TXH_PHY_ANT01AUTO;
1605 }
1606 B43_WARN_ON(1);
1607 return 0;
1608}
1609
1610static void b43_write_beacon_template(struct b43_wldev *dev,
1611 u16 ram_offset,
1612 u16 shm_size_offset)
1613{
1614 unsigned int i, len, variable_len;
1615 const struct ieee80211_mgmt *bcn;
1616 const u8 *ie;
1617 bool tim_found = false;
1618 unsigned int rate;
1619 u16 ctl;
1620 int antenna;
1621 struct ieee80211_tx_info *info;
1622 unsigned long flags;
1623 struct sk_buff *beacon_skb;
1624
1625 spin_lock_irqsave(&dev->wl->beacon_lock, flags);
1626 info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1627 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1628 /* Clone the beacon, so it cannot go away, while we write it to hw. */
1629 beacon_skb = skb_clone(dev->wl->current_beacon, GFP_ATOMIC);
1630 spin_unlock_irqrestore(&dev->wl->beacon_lock, flags);
1631
1632 if (!beacon_skb) {
1633 b43dbg(dev->wl, "Could not upload beacon. "
1634 "Failed to clone beacon skb.");
1635 return;
1636 }
1637
1638 bcn = (const struct ieee80211_mgmt *)(beacon_skb->data);
1639 len = min_t(size_t, beacon_skb->len,
1640 0x200 - sizeof(struct b43_plcp_hdr6));
1641
1642 b43_write_template_common(dev, (const u8 *)bcn,
1643 len, ram_offset, shm_size_offset, rate);
1644
1645 /* Write the PHY TX control parameters. */
1646 antenna = B43_ANTENNA_DEFAULT;
1647 antenna = b43_antenna_to_phyctl(antenna);
1648 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1649 /* We can't send beacons with short preamble. Would get PHY errors. */
1650 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1651 ctl &= ~B43_TXH_PHY_ANT;
1652 ctl &= ~B43_TXH_PHY_ENC;
1653 ctl |= antenna;
1654 if (b43_is_cck_rate(rate))
1655 ctl |= B43_TXH_PHY_ENC_CCK;
1656 else
1657 ctl |= B43_TXH_PHY_ENC_OFDM;
1658 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1659
1660 /* Find the position of the TIM and the DTIM_period value
1661 * and write them to SHM. */
1662 ie = bcn->u.beacon.variable;
1663 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1664 for (i = 0; i < variable_len - 2; ) {
1665 uint8_t ie_id, ie_len;
1666
1667 ie_id = ie[i];
1668 ie_len = ie[i + 1];
1669 if (ie_id == 5) {
1670 u16 tim_position;
1671 u16 dtim_period;
1672 /* This is the TIM Information Element */
1673
1674 /* Check whether the ie_len is in the beacon data range. */
1675 if (variable_len < ie_len + 2 + i)
1676 break;
1677 /* A valid TIM is at least 4 bytes long. */
1678 if (ie_len < 4)
1679 break;
1680 tim_found = true;
1681
1682 tim_position = sizeof(struct b43_plcp_hdr6);
1683 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1684 tim_position += i;
1685
1686 dtim_period = ie[i + 3];
1687
1688 b43_shm_write16(dev, B43_SHM_SHARED,
1689 B43_SHM_SH_TIMBPOS, tim_position);
1690 b43_shm_write16(dev, B43_SHM_SHARED,
1691 B43_SHM_SH_DTIMPER, dtim_period);
1692 break;
1693 }
1694 i += ie_len + 2;
1695 }
1696 if (!tim_found) {
1697 /*
1698 * If ucode wants to modify TIM do it behind the beacon, this
1699 * will happen, for example, when doing mesh networking.
1700 */
1701 b43_shm_write16(dev, B43_SHM_SHARED,
1702 B43_SHM_SH_TIMBPOS,
1703 len + sizeof(struct b43_plcp_hdr6));
1704 b43_shm_write16(dev, B43_SHM_SHARED,
1705 B43_SHM_SH_DTIMPER, 0);
1706 }
1707 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1708
1709 dev_kfree_skb_any(beacon_skb);
1710}
1711
1712static void b43_upload_beacon0(struct b43_wldev *dev)
1713{
1714 struct b43_wl *wl = dev->wl;
1715
1716 if (wl->beacon0_uploaded)
1717 return;
1718 b43_write_beacon_template(dev, B43_SHM_SH_BT_BASE0, B43_SHM_SH_BTL0);
1719 wl->beacon0_uploaded = true;
1720}
1721
1722static void b43_upload_beacon1(struct b43_wldev *dev)
1723{
1724 struct b43_wl *wl = dev->wl;
1725
1726 if (wl->beacon1_uploaded)
1727 return;
1728 b43_write_beacon_template(dev, B43_SHM_SH_BT_BASE1, B43_SHM_SH_BTL1);
1729 wl->beacon1_uploaded = true;
1730}
1731
1732static void handle_irq_beacon(struct b43_wldev *dev)
1733{
1734 struct b43_wl *wl = dev->wl;
1735 u32 cmd, beacon0_valid, beacon1_valid;
1736
1737 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1738 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) &&
1739 !b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
1740 return;
1741
1742 /* This is the bottom half of the asynchronous beacon update. */
1743
1744 /* Ignore interrupt in the future. */
1745 dev->irq_mask &= ~B43_IRQ_BEACON;
1746
1747 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1748 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1749 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1750
1751 /* Schedule interrupt manually, if busy. */
1752 if (beacon0_valid && beacon1_valid) {
1753 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1754 dev->irq_mask |= B43_IRQ_BEACON;
1755 return;
1756 }
1757
1758 if (unlikely(wl->beacon_templates_virgin)) {
1759 /* We never uploaded a beacon before.
1760 * Upload both templates now, but only mark one valid. */
1761 wl->beacon_templates_virgin = false;
1762 b43_upload_beacon0(dev);
1763 b43_upload_beacon1(dev);
1764 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1765 cmd |= B43_MACCMD_BEACON0_VALID;
1766 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1767 } else {
1768 if (!beacon0_valid) {
1769 b43_upload_beacon0(dev);
1770 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1771 cmd |= B43_MACCMD_BEACON0_VALID;
1772 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1773 } else if (!beacon1_valid) {
1774 b43_upload_beacon1(dev);
1775 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1776 cmd |= B43_MACCMD_BEACON1_VALID;
1777 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1778 }
1779 }
1780}
1781
1782static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1783{
1784 u32 old_irq_mask = dev->irq_mask;
1785
1786 /* update beacon right away or defer to irq */
1787 handle_irq_beacon(dev);
1788 if (old_irq_mask != dev->irq_mask) {
1789 /* The handler updated the IRQ mask. */
1790 B43_WARN_ON(!dev->irq_mask);
1791 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1792 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1793 } else {
1794 /* Device interrupts are currently disabled. That means
1795 * we just ran the hardirq handler and scheduled the
1796 * IRQ thread. The thread will write the IRQ mask when
1797 * it finished, so there's nothing to do here. Writing
1798 * the mask _here_ would incorrectly re-enable IRQs. */
1799 }
1800 }
1801}
1802
1803static void b43_beacon_update_trigger_work(struct work_struct *work)
1804{
1805 struct b43_wl *wl = container_of(work, struct b43_wl,
1806 beacon_update_trigger);
1807 struct b43_wldev *dev;
1808
1809 mutex_lock(&wl->mutex);
1810 dev = wl->current_dev;
1811 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1812 if (b43_bus_host_is_sdio(dev->dev)) {
1813 /* wl->mutex is enough. */
1814 b43_do_beacon_update_trigger_work(dev);
1815 mmiowb();
1816 } else {
1817 spin_lock_irq(&wl->hardirq_lock);
1818 b43_do_beacon_update_trigger_work(dev);
1819 mmiowb();
1820 spin_unlock_irq(&wl->hardirq_lock);
1821 }
1822 }
1823 mutex_unlock(&wl->mutex);
1824}
1825
1826/* Asynchronously update the packet templates in template RAM. */
1827static void b43_update_templates(struct b43_wl *wl)
1828{
1829 struct sk_buff *beacon, *old_beacon;
1830 unsigned long flags;
1831
1832 /* This is the top half of the asynchronous beacon update.
1833 * The bottom half is the beacon IRQ.
1834 * Beacon update must be asynchronous to avoid sending an
1835 * invalid beacon. This can happen for example, if the firmware
1836 * transmits a beacon while we are updating it. */
1837
1838 /* We could modify the existing beacon and set the aid bit in
1839 * the TIM field, but that would probably require resizing and
1840 * moving of data within the beacon template.
1841 * Simply request a new beacon and let mac80211 do the hard work. */
1842 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1843 if (unlikely(!beacon))
1844 return;
1845
1846 spin_lock_irqsave(&wl->beacon_lock, flags);
1847 old_beacon = wl->current_beacon;
1848 wl->current_beacon = beacon;
1849 wl->beacon0_uploaded = false;
1850 wl->beacon1_uploaded = false;
1851 spin_unlock_irqrestore(&wl->beacon_lock, flags);
1852
1853 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1854
1855 if (old_beacon)
1856 dev_kfree_skb_any(old_beacon);
1857}
1858
1859static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1860{
1861 b43_time_lock(dev);
1862 if (dev->dev->core_rev >= 3) {
1863 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1864 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1865 } else {
1866 b43_write16(dev, 0x606, (beacon_int >> 6));
1867 b43_write16(dev, 0x610, beacon_int);
1868 }
1869 b43_time_unlock(dev);
1870 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1871}
1872
1873static void b43_handle_firmware_panic(struct b43_wldev *dev)
1874{
1875 u16 reason;
1876
1877 /* Read the register that contains the reason code for the panic. */
1878 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1879 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1880
1881 switch (reason) {
1882 default:
1883 b43dbg(dev->wl, "The panic reason is unknown.\n");
1884 /* fallthrough */
1885 case B43_FWPANIC_DIE:
1886 /* Do not restart the controller or firmware.
1887 * The device is nonfunctional from now on.
1888 * Restarting would result in this panic to trigger again,
1889 * so we avoid that recursion. */
1890 break;
1891 case B43_FWPANIC_RESTART:
1892 b43_controller_restart(dev, "Microcode panic");
1893 break;
1894 }
1895}
1896
1897static void handle_irq_ucode_debug(struct b43_wldev *dev)
1898{
1899 unsigned int i, cnt;
1900 u16 reason, marker_id, marker_line;
1901 __le16 *buf;
1902
1903 /* The proprietary firmware doesn't have this IRQ. */
1904 if (!dev->fw.opensource)
1905 return;
1906
1907 /* Read the register that contains the reason code for this IRQ. */
1908 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1909
1910 switch (reason) {
1911 case B43_DEBUGIRQ_PANIC:
1912 b43_handle_firmware_panic(dev);
1913 break;
1914 case B43_DEBUGIRQ_DUMP_SHM:
1915 if (!B43_DEBUG)
1916 break; /* Only with driver debugging enabled. */
1917 buf = kmalloc(4096, GFP_ATOMIC);
1918 if (!buf) {
1919 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1920 goto out;
1921 }
1922 for (i = 0; i < 4096; i += 2) {
1923 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1924 buf[i / 2] = cpu_to_le16(tmp);
1925 }
1926 b43info(dev->wl, "Shared memory dump:\n");
1927 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1928 16, 2, buf, 4096, 1);
1929 kfree(buf);
1930 break;
1931 case B43_DEBUGIRQ_DUMP_REGS:
1932 if (!B43_DEBUG)
1933 break; /* Only with driver debugging enabled. */
1934 b43info(dev->wl, "Microcode register dump:\n");
1935 for (i = 0, cnt = 0; i < 64; i++) {
1936 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1937 if (cnt == 0)
1938 printk(KERN_INFO);
1939 printk("r%02u: 0x%04X ", i, tmp);
1940 cnt++;
1941 if (cnt == 6) {
1942 printk("\n");
1943 cnt = 0;
1944 }
1945 }
1946 printk("\n");
1947 break;
1948 case B43_DEBUGIRQ_MARKER:
1949 if (!B43_DEBUG)
1950 break; /* Only with driver debugging enabled. */
1951 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1952 B43_MARKER_ID_REG);
1953 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1954 B43_MARKER_LINE_REG);
1955 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1956 "at line number %u\n",
1957 marker_id, marker_line);
1958 break;
1959 default:
1960 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1961 reason);
1962 }
1963out:
1964 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1965 b43_shm_write16(dev, B43_SHM_SCRATCH,
1966 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1967}
1968
1969static void b43_do_interrupt_thread(struct b43_wldev *dev)
1970{
1971 u32 reason;
1972 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1973 u32 merged_dma_reason = 0;
1974 int i;
1975
1976 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1977 return;
1978
1979 reason = dev->irq_reason;
1980 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1981 dma_reason[i] = dev->dma_reason[i];
1982 merged_dma_reason |= dma_reason[i];
1983 }
1984
1985 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1986 b43err(dev->wl, "MAC transmission error\n");
1987
1988 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1989 b43err(dev->wl, "PHY transmission error\n");
1990 rmb();
1991 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1992 atomic_set(&dev->phy.txerr_cnt,
1993 B43_PHY_TX_BADNESS_LIMIT);
1994 b43err(dev->wl, "Too many PHY TX errors, "
1995 "restarting the controller\n");
1996 b43_controller_restart(dev, "PHY TX errors");
1997 }
1998 }
1999
2000 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK))) {
2001 b43err(dev->wl,
2002 "Fatal DMA error: 0x%08X, 0x%08X, 0x%08X, 0x%08X, 0x%08X, 0x%08X\n",
2003 dma_reason[0], dma_reason[1],
2004 dma_reason[2], dma_reason[3],
2005 dma_reason[4], dma_reason[5]);
2006 b43err(dev->wl, "This device does not support DMA "
2007 "on your system. It will now be switched to PIO.\n");
2008 /* Fall back to PIO transfers if we get fatal DMA errors! */
2009 dev->use_pio = true;
2010 b43_controller_restart(dev, "DMA error");
2011 return;
2012 }
2013
2014 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
2015 handle_irq_ucode_debug(dev);
2016 if (reason & B43_IRQ_TBTT_INDI)
2017 handle_irq_tbtt_indication(dev);
2018 if (reason & B43_IRQ_ATIM_END)
2019 handle_irq_atim_end(dev);
2020 if (reason & B43_IRQ_BEACON)
2021 handle_irq_beacon(dev);
2022 if (reason & B43_IRQ_PMQ)
2023 handle_irq_pmq(dev);
2024 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
2025 ;/* TODO */
2026 if (reason & B43_IRQ_NOISESAMPLE_OK)
2027 handle_irq_noise(dev);
2028
2029 /* Check the DMA reason registers for received data. */
2030 if (dma_reason[0] & B43_DMAIRQ_RDESC_UFLOW) {
2031 if (B43_DEBUG)
2032 b43warn(dev->wl, "RX descriptor underrun\n");
2033 b43_dma_handle_rx_overflow(dev->dma.rx_ring);
2034 }
2035 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
2036 if (b43_using_pio_transfers(dev))
2037 b43_pio_rx(dev->pio.rx_queue);
2038 else
2039 b43_dma_rx(dev->dma.rx_ring);
2040 }
2041 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
2042 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
2043 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
2044 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
2045 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
2046
2047 if (reason & B43_IRQ_TX_OK)
2048 handle_irq_transmit_status(dev);
2049
2050 /* Re-enable interrupts on the device by restoring the current interrupt mask. */
2051 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2052
2053#if B43_DEBUG
2054 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
2055 dev->irq_count++;
2056 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
2057 if (reason & (1 << i))
2058 dev->irq_bit_count[i]++;
2059 }
2060 }
2061#endif
2062}
2063
2064/* Interrupt thread handler. Handles device interrupts in thread context. */
2065static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
2066{
2067 struct b43_wldev *dev = dev_id;
2068
2069 mutex_lock(&dev->wl->mutex);
2070 b43_do_interrupt_thread(dev);
2071 mmiowb();
2072 mutex_unlock(&dev->wl->mutex);
2073
2074 return IRQ_HANDLED;
2075}
2076
2077static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
2078{
2079 u32 reason;
2080
2081 /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
2082 * On SDIO, this runs under wl->mutex. */
2083
2084 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2085 if (reason == 0xffffffff) /* shared IRQ */
2086 return IRQ_NONE;
2087 reason &= dev->irq_mask;
2088 if (!reason)
2089 return IRQ_NONE;
2090
2091 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
2092 & 0x0001FC00;
2093 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
2094 & 0x0000DC00;
2095 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
2096 & 0x0000DC00;
2097 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
2098 & 0x0001DC00;
2099 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
2100 & 0x0000DC00;
2101/* Unused ring
2102 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
2103 & 0x0000DC00;
2104*/
2105
2106 /* ACK the interrupt. */
2107 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
2108 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
2109 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
2110 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
2111 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
2112 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
2113/* Unused ring
2114 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
2115*/
2116
2117 /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
2118 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
2119 /* Save the reason bitmasks for the IRQ thread handler. */
2120 dev->irq_reason = reason;
2121
2122 return IRQ_WAKE_THREAD;
2123}
2124
2125/* Interrupt handler top-half. This runs with interrupts disabled. */
2126static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
2127{
2128 struct b43_wldev *dev = dev_id;
2129 irqreturn_t ret;
2130
2131 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2132 return IRQ_NONE;
2133
2134 spin_lock(&dev->wl->hardirq_lock);
2135 ret = b43_do_interrupt(dev);
2136 mmiowb();
2137 spin_unlock(&dev->wl->hardirq_lock);
2138
2139 return ret;
2140}
2141
2142/* SDIO interrupt handler. This runs in process context. */
2143static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
2144{
2145 struct b43_wl *wl = dev->wl;
2146 irqreturn_t ret;
2147
2148 mutex_lock(&wl->mutex);
2149
2150 ret = b43_do_interrupt(dev);
2151 if (ret == IRQ_WAKE_THREAD)
2152 b43_do_interrupt_thread(dev);
2153
2154 mutex_unlock(&wl->mutex);
2155}
2156
2157void b43_do_release_fw(struct b43_firmware_file *fw)
2158{
2159 release_firmware(fw->data);
2160 fw->data = NULL;
2161 fw->filename = NULL;
2162}
2163
2164static void b43_release_firmware(struct b43_wldev *dev)
2165{
2166 complete(&dev->fw_load_complete);
2167 b43_do_release_fw(&dev->fw.ucode);
2168 b43_do_release_fw(&dev->fw.pcm);
2169 b43_do_release_fw(&dev->fw.initvals);
2170 b43_do_release_fw(&dev->fw.initvals_band);
2171}
2172
2173static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
2174{
2175 const char text[] =
2176 "You must go to " \
2177 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
2178 "and download the correct firmware for this driver version. " \
2179 "Please carefully read all instructions on this website.\n";
2180
2181 if (error)
2182 b43err(wl, text);
2183 else
2184 b43warn(wl, text);
2185}
2186
2187static void b43_fw_cb(const struct firmware *firmware, void *context)
2188{
2189 struct b43_request_fw_context *ctx = context;
2190
2191 ctx->blob = firmware;
2192 complete(&ctx->dev->fw_load_complete);
2193}
2194
2195int b43_do_request_fw(struct b43_request_fw_context *ctx,
2196 const char *name,
2197 struct b43_firmware_file *fw, bool async)
2198{
2199 struct b43_fw_header *hdr;
2200 u32 size;
2201 int err;
2202
2203 if (!name) {
2204 /* Don't fetch anything. Free possibly cached firmware. */
2205 /* FIXME: We should probably keep it anyway, to save some headache
2206 * on suspend/resume with multiband devices. */
2207 b43_do_release_fw(fw);
2208 return 0;
2209 }
2210 if (fw->filename) {
2211 if ((fw->type == ctx->req_type) &&
2212 (strcmp(fw->filename, name) == 0))
2213 return 0; /* Already have this fw. */
2214 /* Free the cached firmware first. */
2215 /* FIXME: We should probably do this later after we successfully
2216 * got the new fw. This could reduce headache with multiband devices.
2217 * We could also redesign this to cache the firmware for all possible
2218 * bands all the time. */
2219 b43_do_release_fw(fw);
2220 }
2221
2222 switch (ctx->req_type) {
2223 case B43_FWTYPE_PROPRIETARY:
2224 snprintf(ctx->fwname, sizeof(ctx->fwname),
2225 "b43%s/%s.fw",
2226 modparam_fwpostfix, name);
2227 break;
2228 case B43_FWTYPE_OPENSOURCE:
2229 snprintf(ctx->fwname, sizeof(ctx->fwname),
2230 "b43-open%s/%s.fw",
2231 modparam_fwpostfix, name);
2232 break;
2233 default:
2234 B43_WARN_ON(1);
2235 return -ENOSYS;
2236 }
2237 if (async) {
2238 /* do this part asynchronously */
2239 init_completion(&ctx->dev->fw_load_complete);
2240 err = request_firmware_nowait(THIS_MODULE, 1, ctx->fwname,
2241 ctx->dev->dev->dev, GFP_KERNEL,
2242 ctx, b43_fw_cb);
2243 if (err < 0) {
2244 pr_err("Unable to load firmware\n");
2245 return err;
2246 }
2247 wait_for_completion(&ctx->dev->fw_load_complete);
2248 if (ctx->blob)
2249 goto fw_ready;
2250 /* On some ARM systems, the async request will fail, but the next sync
2251 * request works. For this reason, we fall through here
2252 */
2253 }
2254 err = request_firmware(&ctx->blob, ctx->fwname,
2255 ctx->dev->dev->dev);
2256 if (err == -ENOENT) {
2257 snprintf(ctx->errors[ctx->req_type],
2258 sizeof(ctx->errors[ctx->req_type]),
2259 "Firmware file \"%s\" not found\n",
2260 ctx->fwname);
2261 return err;
2262 } else if (err) {
2263 snprintf(ctx->errors[ctx->req_type],
2264 sizeof(ctx->errors[ctx->req_type]),
2265 "Firmware file \"%s\" request failed (err=%d)\n",
2266 ctx->fwname, err);
2267 return err;
2268 }
2269fw_ready:
2270 if (ctx->blob->size < sizeof(struct b43_fw_header))
2271 goto err_format;
2272 hdr = (struct b43_fw_header *)(ctx->blob->data);
2273 switch (hdr->type) {
2274 case B43_FW_TYPE_UCODE:
2275 case B43_FW_TYPE_PCM:
2276 size = be32_to_cpu(hdr->size);
2277 if (size != ctx->blob->size - sizeof(struct b43_fw_header))
2278 goto err_format;
2279 /* fallthrough */
2280 case B43_FW_TYPE_IV:
2281 if (hdr->ver != 1)
2282 goto err_format;
2283 break;
2284 default:
2285 goto err_format;
2286 }
2287
2288 fw->data = ctx->blob;
2289 fw->filename = name;
2290 fw->type = ctx->req_type;
2291
2292 return 0;
2293
2294err_format:
2295 snprintf(ctx->errors[ctx->req_type],
2296 sizeof(ctx->errors[ctx->req_type]),
2297 "Firmware file \"%s\" format error.\n", ctx->fwname);
2298 release_firmware(ctx->blob);
2299
2300 return -EPROTO;
2301}
2302
2303/* http://bcm-v4.sipsolutions.net/802.11/Init/Firmware */
2304static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2305{
2306 struct b43_wldev *dev = ctx->dev;
2307 struct b43_firmware *fw = &ctx->dev->fw;
2308 struct b43_phy *phy = &dev->phy;
2309 const u8 rev = ctx->dev->dev->core_rev;
2310 const char *filename;
2311 int err;
2312
2313 /* Get microcode */
2314 filename = NULL;
2315 switch (rev) {
2316 case 42:
2317 if (phy->type == B43_PHYTYPE_AC)
2318 filename = "ucode42";
2319 break;
2320 case 40:
2321 if (phy->type == B43_PHYTYPE_AC)
2322 filename = "ucode40";
2323 break;
2324 case 33:
2325 if (phy->type == B43_PHYTYPE_LCN40)
2326 filename = "ucode33_lcn40";
2327 break;
2328 case 30:
2329 if (phy->type == B43_PHYTYPE_N)
2330 filename = "ucode30_mimo";
2331 break;
2332 case 29:
2333 if (phy->type == B43_PHYTYPE_HT)
2334 filename = "ucode29_mimo";
2335 break;
2336 case 26:
2337 if (phy->type == B43_PHYTYPE_HT)
2338 filename = "ucode26_mimo";
2339 break;
2340 case 28:
2341 case 25:
2342 if (phy->type == B43_PHYTYPE_N)
2343 filename = "ucode25_mimo";
2344 else if (phy->type == B43_PHYTYPE_LCN)
2345 filename = "ucode25_lcn";
2346 break;
2347 case 24:
2348 if (phy->type == B43_PHYTYPE_LCN)
2349 filename = "ucode24_lcn";
2350 break;
2351 case 23:
2352 if (phy->type == B43_PHYTYPE_N)
2353 filename = "ucode16_mimo";
2354 break;
2355 case 16 ... 19:
2356 if (phy->type == B43_PHYTYPE_N)
2357 filename = "ucode16_mimo";
2358 else if (phy->type == B43_PHYTYPE_LP)
2359 filename = "ucode16_lp";
2360 break;
2361 case 15:
2362 filename = "ucode15";
2363 break;
2364 case 14:
2365 filename = "ucode14";
2366 break;
2367 case 13:
2368 filename = "ucode13";
2369 break;
2370 case 11 ... 12:
2371 filename = "ucode11";
2372 break;
2373 case 5 ... 10:
2374 filename = "ucode5";
2375 break;
2376 }
2377 if (!filename)
2378 goto err_no_ucode;
2379 err = b43_do_request_fw(ctx, filename, &fw->ucode, true);
2380 if (err)
2381 goto err_load;
2382
2383 /* Get PCM code */
2384 if ((rev >= 5) && (rev <= 10))
2385 filename = "pcm5";
2386 else if (rev >= 11)
2387 filename = NULL;
2388 else
2389 goto err_no_pcm;
2390 fw->pcm_request_failed = false;
2391 err = b43_do_request_fw(ctx, filename, &fw->pcm, false);
2392 if (err == -ENOENT) {
2393 /* We did not find a PCM file? Not fatal, but
2394 * core rev <= 10 must do without hwcrypto then. */
2395 fw->pcm_request_failed = true;
2396 } else if (err)
2397 goto err_load;
2398
2399 /* Get initvals */
2400 filename = NULL;
2401 switch (dev->phy.type) {
2402 case B43_PHYTYPE_G:
2403 if (rev == 13)
2404 filename = "b0g0initvals13";
2405 else if (rev >= 5 && rev <= 10)
2406 filename = "b0g0initvals5";
2407 break;
2408 case B43_PHYTYPE_N:
2409 if (rev == 30)
2410 filename = "n16initvals30";
2411 else if (rev == 28 || rev == 25)
2412 filename = "n0initvals25";
2413 else if (rev == 24)
2414 filename = "n0initvals24";
2415 else if (rev == 23)
2416 filename = "n0initvals16"; /* What about n0initvals22? */
2417 else if (rev >= 16 && rev <= 18)
2418 filename = "n0initvals16";
2419 else if (rev >= 11 && rev <= 12)
2420 filename = "n0initvals11";
2421 break;
2422 case B43_PHYTYPE_LP:
2423 if (rev >= 16 && rev <= 18)
2424 filename = "lp0initvals16";
2425 else if (rev == 15)
2426 filename = "lp0initvals15";
2427 else if (rev == 14)
2428 filename = "lp0initvals14";
2429 else if (rev == 13)
2430 filename = "lp0initvals13";
2431 break;
2432 case B43_PHYTYPE_HT:
2433 if (rev == 29)
2434 filename = "ht0initvals29";
2435 else if (rev == 26)
2436 filename = "ht0initvals26";
2437 break;
2438 case B43_PHYTYPE_LCN:
2439 if (rev == 24)
2440 filename = "lcn0initvals24";
2441 break;
2442 case B43_PHYTYPE_LCN40:
2443 if (rev == 33)
2444 filename = "lcn400initvals33";
2445 break;
2446 case B43_PHYTYPE_AC:
2447 if (rev == 42)
2448 filename = "ac1initvals42";
2449 else if (rev == 40)
2450 filename = "ac0initvals40";
2451 break;
2452 }
2453 if (!filename)
2454 goto err_no_initvals;
2455 err = b43_do_request_fw(ctx, filename, &fw->initvals, false);
2456 if (err)
2457 goto err_load;
2458
2459 /* Get bandswitch initvals */
2460 filename = NULL;
2461 switch (dev->phy.type) {
2462 case B43_PHYTYPE_G:
2463 if (rev == 13)
2464 filename = "b0g0bsinitvals13";
2465 else if (rev >= 5 && rev <= 10)
2466 filename = "b0g0bsinitvals5";
2467 break;
2468 case B43_PHYTYPE_N:
2469 if (rev == 30)
2470 filename = "n16bsinitvals30";
2471 else if (rev == 28 || rev == 25)
2472 filename = "n0bsinitvals25";
2473 else if (rev == 24)
2474 filename = "n0bsinitvals24";
2475 else if (rev == 23)
2476 filename = "n0bsinitvals16"; /* What about n0bsinitvals22? */
2477 else if (rev >= 16 && rev <= 18)
2478 filename = "n0bsinitvals16";
2479 else if (rev >= 11 && rev <= 12)
2480 filename = "n0bsinitvals11";
2481 break;
2482 case B43_PHYTYPE_LP:
2483 if (rev >= 16 && rev <= 18)
2484 filename = "lp0bsinitvals16";
2485 else if (rev == 15)
2486 filename = "lp0bsinitvals15";
2487 else if (rev == 14)
2488 filename = "lp0bsinitvals14";
2489 else if (rev == 13)
2490 filename = "lp0bsinitvals13";
2491 break;
2492 case B43_PHYTYPE_HT:
2493 if (rev == 29)
2494 filename = "ht0bsinitvals29";
2495 else if (rev == 26)
2496 filename = "ht0bsinitvals26";
2497 break;
2498 case B43_PHYTYPE_LCN:
2499 if (rev == 24)
2500 filename = "lcn0bsinitvals24";
2501 break;
2502 case B43_PHYTYPE_LCN40:
2503 if (rev == 33)
2504 filename = "lcn400bsinitvals33";
2505 break;
2506 case B43_PHYTYPE_AC:
2507 if (rev == 42)
2508 filename = "ac1bsinitvals42";
2509 else if (rev == 40)
2510 filename = "ac0bsinitvals40";
2511 break;
2512 }
2513 if (!filename)
2514 goto err_no_initvals;
2515 err = b43_do_request_fw(ctx, filename, &fw->initvals_band, false);
2516 if (err)
2517 goto err_load;
2518
2519 fw->opensource = (ctx->req_type == B43_FWTYPE_OPENSOURCE);
2520
2521 return 0;
2522
2523err_no_ucode:
2524 err = ctx->fatal_failure = -EOPNOTSUPP;
2525 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2526 "is required for your device (wl-core rev %u)\n", rev);
2527 goto error;
2528
2529err_no_pcm:
2530 err = ctx->fatal_failure = -EOPNOTSUPP;
2531 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2532 "is required for your device (wl-core rev %u)\n", rev);
2533 goto error;
2534
2535err_no_initvals:
2536 err = ctx->fatal_failure = -EOPNOTSUPP;
2537 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2538 "is required for your device (wl-core rev %u)\n", rev);
2539 goto error;
2540
2541err_load:
2542 /* We failed to load this firmware image. The error message
2543 * already is in ctx->errors. Return and let our caller decide
2544 * what to do. */
2545 goto error;
2546
2547error:
2548 b43_release_firmware(dev);
2549 return err;
2550}
2551
2552static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl);
2553static void b43_one_core_detach(struct b43_bus_dev *dev);
2554static int b43_rng_init(struct b43_wl *wl);
2555
2556static void b43_request_firmware(struct work_struct *work)
2557{
2558 struct b43_wl *wl = container_of(work,
2559 struct b43_wl, firmware_load);
2560 struct b43_wldev *dev = wl->current_dev;
2561 struct b43_request_fw_context *ctx;
2562 unsigned int i;
2563 int err;
2564 const char *errmsg;
2565
2566 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2567 if (!ctx)
2568 return;
2569 ctx->dev = dev;
2570
2571 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2572 err = b43_try_request_fw(ctx);
2573 if (!err)
2574 goto start_ieee80211; /* Successfully loaded it. */
2575 /* Was fw version known? */
2576 if (ctx->fatal_failure)
2577 goto out;
2578
2579 /* proprietary fw not found, try open source */
2580 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2581 err = b43_try_request_fw(ctx);
2582 if (!err)
2583 goto start_ieee80211; /* Successfully loaded it. */
2584 if(ctx->fatal_failure)
2585 goto out;
2586
2587 /* Could not find a usable firmware. Print the errors. */
2588 for (i = 0; i < B43_NR_FWTYPES; i++) {
2589 errmsg = ctx->errors[i];
2590 if (strlen(errmsg))
2591 b43err(dev->wl, "%s", errmsg);
2592 }
2593 b43_print_fw_helptext(dev->wl, 1);
2594 goto out;
2595
2596start_ieee80211:
2597 wl->hw->queues = B43_QOS_QUEUE_NUM;
2598 if (!modparam_qos || dev->fw.opensource)
2599 wl->hw->queues = 1;
2600
2601 err = ieee80211_register_hw(wl->hw);
2602 if (err)
2603 goto err_one_core_detach;
2604 wl->hw_registred = true;
2605 b43_leds_register(wl->current_dev);
2606
2607 /* Register HW RNG driver */
2608 b43_rng_init(wl);
2609
2610 goto out;
2611
2612err_one_core_detach:
2613 b43_one_core_detach(dev->dev);
2614
2615out:
2616 kfree(ctx);
2617}
2618
2619static int b43_upload_microcode(struct b43_wldev *dev)
2620{
2621 struct wiphy *wiphy = dev->wl->hw->wiphy;
2622 const size_t hdr_len = sizeof(struct b43_fw_header);
2623 const __be32 *data;
2624 unsigned int i, len;
2625 u16 fwrev, fwpatch, fwdate, fwtime;
2626 u32 tmp, macctl;
2627 int err = 0;
2628
2629 /* Jump the microcode PSM to offset 0 */
2630 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2631 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2632 macctl |= B43_MACCTL_PSM_JMP0;
2633 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2634 /* Zero out all microcode PSM registers and shared memory. */
2635 for (i = 0; i < 64; i++)
2636 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2637 for (i = 0; i < 4096; i += 2)
2638 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2639
2640 /* Upload Microcode. */
2641 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2642 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2643 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2644 for (i = 0; i < len; i++) {
2645 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2646 udelay(10);
2647 }
2648
2649 if (dev->fw.pcm.data) {
2650 /* Upload PCM data. */
2651 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2652 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2653 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2654 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2655 /* No need for autoinc bit in SHM_HW */
2656 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2657 for (i = 0; i < len; i++) {
2658 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2659 udelay(10);
2660 }
2661 }
2662
2663 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2664
2665 /* Start the microcode PSM */
2666 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_JMP0,
2667 B43_MACCTL_PSM_RUN);
2668
2669 /* Wait for the microcode to load and respond */
2670 i = 0;
2671 while (1) {
2672 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2673 if (tmp == B43_IRQ_MAC_SUSPENDED)
2674 break;
2675 i++;
2676 if (i >= 20) {
2677 b43err(dev->wl, "Microcode not responding\n");
2678 b43_print_fw_helptext(dev->wl, 1);
2679 err = -ENODEV;
2680 goto error;
2681 }
2682 msleep(50);
2683 }
2684 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2685
2686 /* Get and check the revisions. */
2687 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2688 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2689 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2690 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2691
2692 if (fwrev <= 0x128) {
2693 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2694 "binary drivers older than version 4.x is unsupported. "
2695 "You must upgrade your firmware files.\n");
2696 b43_print_fw_helptext(dev->wl, 1);
2697 err = -EOPNOTSUPP;
2698 goto error;
2699 }
2700 dev->fw.rev = fwrev;
2701 dev->fw.patch = fwpatch;
2702 if (dev->fw.rev >= 598)
2703 dev->fw.hdr_format = B43_FW_HDR_598;
2704 else if (dev->fw.rev >= 410)
2705 dev->fw.hdr_format = B43_FW_HDR_410;
2706 else
2707 dev->fw.hdr_format = B43_FW_HDR_351;
2708 WARN_ON(dev->fw.opensource != (fwdate == 0xFFFF));
2709
2710 dev->qos_enabled = dev->wl->hw->queues > 1;
2711 /* Default to firmware/hardware crypto acceleration. */
2712 dev->hwcrypto_enabled = true;
2713
2714 if (dev->fw.opensource) {
2715 u16 fwcapa;
2716
2717 /* Patchlevel info is encoded in the "time" field. */
2718 dev->fw.patch = fwtime;
2719 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2720 dev->fw.rev, dev->fw.patch);
2721
2722 fwcapa = b43_fwcapa_read(dev);
2723 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2724 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2725 /* Disable hardware crypto and fall back to software crypto. */
2726 dev->hwcrypto_enabled = false;
2727 }
2728 /* adding QoS support should use an offline discovery mechanism */
2729 WARN(fwcapa & B43_FWCAPA_QOS, "QoS in OpenFW not supported\n");
2730 } else {
2731 b43info(dev->wl, "Loading firmware version %u.%u "
2732 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2733 fwrev, fwpatch,
2734 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2735 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2736 if (dev->fw.pcm_request_failed) {
2737 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2738 "Hardware accelerated cryptography is disabled.\n");
2739 b43_print_fw_helptext(dev->wl, 0);
2740 }
2741 }
2742
2743 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
2744 dev->fw.rev, dev->fw.patch);
2745 wiphy->hw_version = dev->dev->core_id;
2746
2747 if (dev->fw.hdr_format == B43_FW_HDR_351) {
2748 /* We're over the deadline, but we keep support for old fw
2749 * until it turns out to be in major conflict with something new. */
2750 b43warn(dev->wl, "You are using an old firmware image. "
2751 "Support for old firmware will be removed soon "
2752 "(official deadline was July 2008).\n");
2753 b43_print_fw_helptext(dev->wl, 0);
2754 }
2755
2756 return 0;
2757
2758error:
2759 /* Stop the microcode PSM. */
2760 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
2761 B43_MACCTL_PSM_JMP0);
2762
2763 return err;
2764}
2765
2766static int b43_write_initvals(struct b43_wldev *dev,
2767 const struct b43_iv *ivals,
2768 size_t count,
2769 size_t array_size)
2770{
2771 const struct b43_iv *iv;
2772 u16 offset;
2773 size_t i;
2774 bool bit32;
2775
2776 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2777 iv = ivals;
2778 for (i = 0; i < count; i++) {
2779 if (array_size < sizeof(iv->offset_size))
2780 goto err_format;
2781 array_size -= sizeof(iv->offset_size);
2782 offset = be16_to_cpu(iv->offset_size);
2783 bit32 = !!(offset & B43_IV_32BIT);
2784 offset &= B43_IV_OFFSET_MASK;
2785 if (offset >= 0x1000)
2786 goto err_format;
2787 if (bit32) {
2788 u32 value;
2789
2790 if (array_size < sizeof(iv->data.d32))
2791 goto err_format;
2792 array_size -= sizeof(iv->data.d32);
2793
2794 value = get_unaligned_be32(&iv->data.d32);
2795 b43_write32(dev, offset, value);
2796
2797 iv = (const struct b43_iv *)((const uint8_t *)iv +
2798 sizeof(__be16) +
2799 sizeof(__be32));
2800 } else {
2801 u16 value;
2802
2803 if (array_size < sizeof(iv->data.d16))
2804 goto err_format;
2805 array_size -= sizeof(iv->data.d16);
2806
2807 value = be16_to_cpu(iv->data.d16);
2808 b43_write16(dev, offset, value);
2809
2810 iv = (const struct b43_iv *)((const uint8_t *)iv +
2811 sizeof(__be16) +
2812 sizeof(__be16));
2813 }
2814 }
2815 if (array_size)
2816 goto err_format;
2817
2818 return 0;
2819
2820err_format:
2821 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2822 b43_print_fw_helptext(dev->wl, 1);
2823
2824 return -EPROTO;
2825}
2826
2827static int b43_upload_initvals(struct b43_wldev *dev)
2828{
2829 const size_t hdr_len = sizeof(struct b43_fw_header);
2830 const struct b43_fw_header *hdr;
2831 struct b43_firmware *fw = &dev->fw;
2832 const struct b43_iv *ivals;
2833 size_t count;
2834
2835 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2836 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2837 count = be32_to_cpu(hdr->size);
2838 return b43_write_initvals(dev, ivals, count,
2839 fw->initvals.data->size - hdr_len);
2840}
2841
2842static int b43_upload_initvals_band(struct b43_wldev *dev)
2843{
2844 const size_t hdr_len = sizeof(struct b43_fw_header);
2845 const struct b43_fw_header *hdr;
2846 struct b43_firmware *fw = &dev->fw;
2847 const struct b43_iv *ivals;
2848 size_t count;
2849
2850 if (!fw->initvals_band.data)
2851 return 0;
2852
2853 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2854 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2855 count = be32_to_cpu(hdr->size);
2856 return b43_write_initvals(dev, ivals, count,
2857 fw->initvals_band.data->size - hdr_len);
2858}
2859
2860/* Initialize the GPIOs
2861 * http://bcm-specs.sipsolutions.net/GPIO
2862 */
2863
2864#ifdef CONFIG_B43_SSB
2865static struct ssb_device *b43_ssb_gpio_dev(struct b43_wldev *dev)
2866{
2867 struct ssb_bus *bus = dev->dev->sdev->bus;
2868
2869#ifdef CONFIG_SSB_DRIVER_PCICORE
2870 return (bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev);
2871#else
2872 return bus->chipco.dev;
2873#endif
2874}
2875#endif
2876
2877static int b43_gpio_init(struct b43_wldev *dev)
2878{
2879#ifdef CONFIG_B43_SSB
2880 struct ssb_device *gpiodev;
2881#endif
2882 u32 mask, set;
2883
2884 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_GPOUTSMSK, 0);
2885 b43_maskset16(dev, B43_MMIO_GPIO_MASK, ~0, 0xF);
2886
2887 mask = 0x0000001F;
2888 set = 0x0000000F;
2889 if (dev->dev->chip_id == 0x4301) {
2890 mask |= 0x0060;
2891 set |= 0x0060;
2892 } else if (dev->dev->chip_id == 0x5354) {
2893 /* Don't allow overtaking buttons GPIOs */
2894 set &= 0x2; /* 0x2 is LED GPIO on BCM5354 */
2895 }
2896
2897 if (0 /* FIXME: conditional unknown */ ) {
2898 b43_write16(dev, B43_MMIO_GPIO_MASK,
2899 b43_read16(dev, B43_MMIO_GPIO_MASK)
2900 | 0x0100);
2901 /* BT Coexistance Input */
2902 mask |= 0x0080;
2903 set |= 0x0080;
2904 /* BT Coexistance Out */
2905 mask |= 0x0100;
2906 set |= 0x0100;
2907 }
2908 if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL) {
2909 /* PA is controlled by gpio 9, let ucode handle it */
2910 b43_write16(dev, B43_MMIO_GPIO_MASK,
2911 b43_read16(dev, B43_MMIO_GPIO_MASK)
2912 | 0x0200);
2913 mask |= 0x0200;
2914 set |= 0x0200;
2915 }
2916
2917 switch (dev->dev->bus_type) {
2918#ifdef CONFIG_B43_BCMA
2919 case B43_BUS_BCMA:
2920 bcma_chipco_gpio_control(&dev->dev->bdev->bus->drv_cc, mask, set);
2921 break;
2922#endif
2923#ifdef CONFIG_B43_SSB
2924 case B43_BUS_SSB:
2925 gpiodev = b43_ssb_gpio_dev(dev);
2926 if (gpiodev)
2927 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2928 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2929 & ~mask) | set);
2930 break;
2931#endif
2932 }
2933
2934 return 0;
2935}
2936
2937/* Turn off all GPIO stuff. Call this on module unload, for example. */
2938static void b43_gpio_cleanup(struct b43_wldev *dev)
2939{
2940#ifdef CONFIG_B43_SSB
2941 struct ssb_device *gpiodev;
2942#endif
2943
2944 switch (dev->dev->bus_type) {
2945#ifdef CONFIG_B43_BCMA
2946 case B43_BUS_BCMA:
2947 bcma_chipco_gpio_control(&dev->dev->bdev->bus->drv_cc, ~0, 0);
2948 break;
2949#endif
2950#ifdef CONFIG_B43_SSB
2951 case B43_BUS_SSB:
2952 gpiodev = b43_ssb_gpio_dev(dev);
2953 if (gpiodev)
2954 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2955 break;
2956#endif
2957 }
2958}
2959
2960/* http://bcm-specs.sipsolutions.net/EnableMac */
2961void b43_mac_enable(struct b43_wldev *dev)
2962{
2963 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2964 u16 fwstate;
2965
2966 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2967 B43_SHM_SH_UCODESTAT);
2968 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2969 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2970 b43err(dev->wl, "b43_mac_enable(): The firmware "
2971 "should be suspended, but current state is %u\n",
2972 fwstate);
2973 }
2974 }
2975
2976 dev->mac_suspended--;
2977 B43_WARN_ON(dev->mac_suspended < 0);
2978 if (dev->mac_suspended == 0) {
2979 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_ENABLED);
2980 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2981 B43_IRQ_MAC_SUSPENDED);
2982 /* Commit writes */
2983 b43_read32(dev, B43_MMIO_MACCTL);
2984 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2985 b43_power_saving_ctl_bits(dev, 0);
2986 }
2987}
2988
2989/* http://bcm-specs.sipsolutions.net/SuspendMAC */
2990void b43_mac_suspend(struct b43_wldev *dev)
2991{
2992 int i;
2993 u32 tmp;
2994
2995 might_sleep();
2996 B43_WARN_ON(dev->mac_suspended < 0);
2997
2998 if (dev->mac_suspended == 0) {
2999 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
3000 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_ENABLED, 0);
3001 /* force pci to flush the write */
3002 b43_read32(dev, B43_MMIO_MACCTL);
3003 for (i = 35; i; i--) {
3004 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
3005 if (tmp & B43_IRQ_MAC_SUSPENDED)
3006 goto out;
3007 udelay(10);
3008 }
3009 /* Hm, it seems this will take some time. Use msleep(). */
3010 for (i = 40; i; i--) {
3011 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
3012 if (tmp & B43_IRQ_MAC_SUSPENDED)
3013 goto out;
3014 msleep(1);
3015 }
3016 b43err(dev->wl, "MAC suspend failed\n");
3017 }
3018out:
3019 dev->mac_suspended++;
3020}
3021
3022/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
3023void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
3024{
3025 u32 tmp;
3026
3027 switch (dev->dev->bus_type) {
3028#ifdef CONFIG_B43_BCMA
3029 case B43_BUS_BCMA:
3030 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
3031 if (on)
3032 tmp |= B43_BCMA_IOCTL_MACPHYCLKEN;
3033 else
3034 tmp &= ~B43_BCMA_IOCTL_MACPHYCLKEN;
3035 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
3036 break;
3037#endif
3038#ifdef CONFIG_B43_SSB
3039 case B43_BUS_SSB:
3040 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
3041 if (on)
3042 tmp |= B43_TMSLOW_MACPHYCLKEN;
3043 else
3044 tmp &= ~B43_TMSLOW_MACPHYCLKEN;
3045 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
3046 break;
3047#endif
3048 }
3049}
3050
3051/* brcms_b_switch_macfreq */
3052void b43_mac_switch_freq(struct b43_wldev *dev, u8 spurmode)
3053{
3054 u16 chip_id = dev->dev->chip_id;
3055
3056 if (chip_id == BCMA_CHIP_ID_BCM4331) {
3057 switch (spurmode) {
3058 case 2: /* 168 Mhz: 2^26/168 = 0x61862 */
3059 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x1862);
3060 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6);
3061 break;
3062 case 1: /* 164 Mhz: 2^26/164 = 0x63e70 */
3063 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x3e70);
3064 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6);
3065 break;
3066 default: /* 160 Mhz: 2^26/160 = 0x66666 */
3067 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x6666);
3068 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6);
3069 break;
3070 }
3071 } else if (chip_id == BCMA_CHIP_ID_BCM43131 ||
3072 chip_id == BCMA_CHIP_ID_BCM43217 ||
3073 chip_id == BCMA_CHIP_ID_BCM43222 ||
3074 chip_id == BCMA_CHIP_ID_BCM43224 ||
3075 chip_id == BCMA_CHIP_ID_BCM43225 ||
3076 chip_id == BCMA_CHIP_ID_BCM43227 ||
3077 chip_id == BCMA_CHIP_ID_BCM43228) {
3078 switch (spurmode) {
3079 case 2: /* 126 Mhz */
3080 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x2082);
3081 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
3082 break;
3083 case 1: /* 123 Mhz */
3084 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x5341);
3085 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
3086 break;
3087 default: /* 120 Mhz */
3088 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x8889);
3089 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
3090 break;
3091 }
3092 } else if (dev->phy.type == B43_PHYTYPE_LCN) {
3093 switch (spurmode) {
3094 case 1: /* 82 Mhz */
3095 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x7CE0);
3096 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0xC);
3097 break;
3098 default: /* 80 Mhz */
3099 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0xCCCD);
3100 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0xC);
3101 break;
3102 }
3103 }
3104}
3105
3106static void b43_adjust_opmode(struct b43_wldev *dev)
3107{
3108 struct b43_wl *wl = dev->wl;
3109 u32 ctl;
3110 u16 cfp_pretbtt;
3111
3112 ctl = b43_read32(dev, B43_MMIO_MACCTL);
3113 /* Reset status to STA infrastructure mode. */
3114 ctl &= ~B43_MACCTL_AP;
3115 ctl &= ~B43_MACCTL_KEEP_CTL;
3116 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
3117 ctl &= ~B43_MACCTL_KEEP_BAD;
3118 ctl &= ~B43_MACCTL_PROMISC;
3119 ctl &= ~B43_MACCTL_BEACPROMISC;
3120 ctl |= B43_MACCTL_INFRA;
3121
3122 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3123 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
3124 ctl |= B43_MACCTL_AP;
3125 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
3126 ctl &= ~B43_MACCTL_INFRA;
3127
3128 if (wl->filter_flags & FIF_CONTROL)
3129 ctl |= B43_MACCTL_KEEP_CTL;
3130 if (wl->filter_flags & FIF_FCSFAIL)
3131 ctl |= B43_MACCTL_KEEP_BAD;
3132 if (wl->filter_flags & FIF_PLCPFAIL)
3133 ctl |= B43_MACCTL_KEEP_BADPLCP;
3134 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
3135 ctl |= B43_MACCTL_BEACPROMISC;
3136
3137 /* Workaround: On old hardware the HW-MAC-address-filter
3138 * doesn't work properly, so always run promisc in filter
3139 * it in software. */
3140 if (dev->dev->core_rev <= 4)
3141 ctl |= B43_MACCTL_PROMISC;
3142
3143 b43_write32(dev, B43_MMIO_MACCTL, ctl);
3144
3145 cfp_pretbtt = 2;
3146 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
3147 if (dev->dev->chip_id == 0x4306 &&
3148 dev->dev->chip_rev == 3)
3149 cfp_pretbtt = 100;
3150 else
3151 cfp_pretbtt = 50;
3152 }
3153 b43_write16(dev, 0x612, cfp_pretbtt);
3154
3155 /* FIXME: We don't currently implement the PMQ mechanism,
3156 * so always disable it. If we want to implement PMQ,
3157 * we need to enable it here (clear DISCPMQ) in AP mode.
3158 */
3159 if (0 /* ctl & B43_MACCTL_AP */)
3160 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_DISCPMQ, 0);
3161 else
3162 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_DISCPMQ);
3163}
3164
3165static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
3166{
3167 u16 offset;
3168
3169 if (is_ofdm) {
3170 offset = 0x480;
3171 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
3172 } else {
3173 offset = 0x4C0;
3174 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
3175 }
3176 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
3177 b43_shm_read16(dev, B43_SHM_SHARED, offset));
3178}
3179
3180static void b43_rate_memory_init(struct b43_wldev *dev)
3181{
3182 switch (dev->phy.type) {
3183 case B43_PHYTYPE_A:
3184 case B43_PHYTYPE_G:
3185 case B43_PHYTYPE_N:
3186 case B43_PHYTYPE_LP:
3187 case B43_PHYTYPE_HT:
3188 case B43_PHYTYPE_LCN:
3189 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
3190 b43_rate_memory_write(dev, B43_OFDM_RATE_9MB, 1);
3191 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
3192 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
3193 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
3194 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
3195 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
3196 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
3197 if (dev->phy.type == B43_PHYTYPE_A)
3198 break;
3199 /* fallthrough */
3200 case B43_PHYTYPE_B:
3201 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
3202 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
3203 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
3204 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
3205 break;
3206 default:
3207 B43_WARN_ON(1);
3208 }
3209}
3210
3211/* Set the default values for the PHY TX Control Words. */
3212static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
3213{
3214 u16 ctl = 0;
3215
3216 ctl |= B43_TXH_PHY_ENC_CCK;
3217 ctl |= B43_TXH_PHY_ANT01AUTO;
3218 ctl |= B43_TXH_PHY_TXPWR;
3219
3220 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
3221 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
3222 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
3223}
3224
3225/* Set the TX-Antenna for management frames sent by firmware. */
3226static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
3227{
3228 u16 ant;
3229 u16 tmp;
3230
3231 ant = b43_antenna_to_phyctl(antenna);
3232
3233 /* For ACK/CTS */
3234 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
3235 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
3236 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
3237 /* For Probe Resposes */
3238 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
3239 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
3240 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
3241}
3242
3243/* This is the opposite of b43_chip_init() */
3244static void b43_chip_exit(struct b43_wldev *dev)
3245{
3246 b43_phy_exit(dev);
3247 b43_gpio_cleanup(dev);
3248 /* firmware is released later */
3249}
3250
3251/* Initialize the chip
3252 * http://bcm-specs.sipsolutions.net/ChipInit
3253 */
3254static int b43_chip_init(struct b43_wldev *dev)
3255{
3256 struct b43_phy *phy = &dev->phy;
3257 int err;
3258 u32 macctl;
3259 u16 value16;
3260
3261 /* Initialize the MAC control */
3262 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
3263 if (dev->phy.gmode)
3264 macctl |= B43_MACCTL_GMODE;
3265 macctl |= B43_MACCTL_INFRA;
3266 b43_write32(dev, B43_MMIO_MACCTL, macctl);
3267
3268 err = b43_upload_microcode(dev);
3269 if (err)
3270 goto out; /* firmware is released later */
3271
3272 err = b43_gpio_init(dev);
3273 if (err)
3274 goto out; /* firmware is released later */
3275
3276 err = b43_upload_initvals(dev);
3277 if (err)
3278 goto err_gpio_clean;
3279
3280 err = b43_upload_initvals_band(dev);
3281 if (err)
3282 goto err_gpio_clean;
3283
3284 /* Turn the Analog on and initialize the PHY. */
3285 phy->ops->switch_analog(dev, 1);
3286 err = b43_phy_init(dev);
3287 if (err)
3288 goto err_gpio_clean;
3289
3290 /* Disable Interference Mitigation. */
3291 if (phy->ops->interf_mitigation)
3292 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
3293
3294 /* Select the antennae */
3295 if (phy->ops->set_rx_antenna)
3296 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
3297 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
3298
3299 if (phy->type == B43_PHYTYPE_B) {
3300 value16 = b43_read16(dev, 0x005E);
3301 value16 |= 0x0004;
3302 b43_write16(dev, 0x005E, value16);
3303 }
3304 b43_write32(dev, 0x0100, 0x01000000);
3305 if (dev->dev->core_rev < 5)
3306 b43_write32(dev, 0x010C, 0x01000000);
3307
3308 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_INFRA, 0);
3309 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_INFRA);
3310
3311 /* Probe Response Timeout value */
3312 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
3313 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 0);
3314
3315 /* Initially set the wireless operation mode. */
3316 b43_adjust_opmode(dev);
3317
3318 if (dev->dev->core_rev < 3) {
3319 b43_write16(dev, 0x060E, 0x0000);
3320 b43_write16(dev, 0x0610, 0x8000);
3321 b43_write16(dev, 0x0604, 0x0000);
3322 b43_write16(dev, 0x0606, 0x0200);
3323 } else {
3324 b43_write32(dev, 0x0188, 0x80000000);
3325 b43_write32(dev, 0x018C, 0x02000000);
3326 }
3327 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
3328 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001FC00);
3329 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
3330 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
3331 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
3332 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
3333 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
3334
3335 b43_mac_phy_clock_set(dev, true);
3336
3337 switch (dev->dev->bus_type) {
3338#ifdef CONFIG_B43_BCMA
3339 case B43_BUS_BCMA:
3340 /* FIXME: 0xE74 is quite common, but should be read from CC */
3341 b43_write16(dev, B43_MMIO_POWERUP_DELAY, 0xE74);
3342 break;
3343#endif
3344#ifdef CONFIG_B43_SSB
3345 case B43_BUS_SSB:
3346 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
3347 dev->dev->sdev->bus->chipco.fast_pwrup_delay);
3348 break;
3349#endif
3350 }
3351
3352 err = 0;
3353 b43dbg(dev->wl, "Chip initialized\n");
3354out:
3355 return err;
3356
3357err_gpio_clean:
3358 b43_gpio_cleanup(dev);
3359 return err;
3360}
3361
3362static void b43_periodic_every60sec(struct b43_wldev *dev)
3363{
3364 const struct b43_phy_operations *ops = dev->phy.ops;
3365
3366 if (ops->pwork_60sec)
3367 ops->pwork_60sec(dev);
3368
3369 /* Force check the TX power emission now. */
3370 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
3371}
3372
3373static void b43_periodic_every30sec(struct b43_wldev *dev)
3374{
3375 /* Update device statistics. */
3376 b43_calculate_link_quality(dev);
3377}
3378
3379static void b43_periodic_every15sec(struct b43_wldev *dev)
3380{
3381 struct b43_phy *phy = &dev->phy;
3382 u16 wdr;
3383
3384 if (dev->fw.opensource) {
3385 /* Check if the firmware is still alive.
3386 * It will reset the watchdog counter to 0 in its idle loop. */
3387 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
3388 if (unlikely(wdr)) {
3389 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
3390 b43_controller_restart(dev, "Firmware watchdog");
3391 return;
3392 } else {
3393 b43_shm_write16(dev, B43_SHM_SCRATCH,
3394 B43_WATCHDOG_REG, 1);
3395 }
3396 }
3397
3398 if (phy->ops->pwork_15sec)
3399 phy->ops->pwork_15sec(dev);
3400
3401 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3402 wmb();
3403
3404#if B43_DEBUG
3405 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
3406 unsigned int i;
3407
3408 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
3409 dev->irq_count / 15,
3410 dev->tx_count / 15,
3411 dev->rx_count / 15);
3412 dev->irq_count = 0;
3413 dev->tx_count = 0;
3414 dev->rx_count = 0;
3415 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
3416 if (dev->irq_bit_count[i]) {
3417 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
3418 dev->irq_bit_count[i] / 15, i, (1 << i));
3419 dev->irq_bit_count[i] = 0;
3420 }
3421 }
3422 }
3423#endif
3424}
3425
3426static void do_periodic_work(struct b43_wldev *dev)
3427{
3428 unsigned int state;
3429
3430 state = dev->periodic_state;
3431 if (state % 4 == 0)
3432 b43_periodic_every60sec(dev);
3433 if (state % 2 == 0)
3434 b43_periodic_every30sec(dev);
3435 b43_periodic_every15sec(dev);
3436}
3437
3438/* Periodic work locking policy:
3439 * The whole periodic work handler is protected by
3440 * wl->mutex. If another lock is needed somewhere in the
3441 * pwork callchain, it's acquired in-place, where it's needed.
3442 */
3443static void b43_periodic_work_handler(struct work_struct *work)
3444{
3445 struct b43_wldev *dev = container_of(work, struct b43_wldev,
3446 periodic_work.work);
3447 struct b43_wl *wl = dev->wl;
3448 unsigned long delay;
3449
3450 mutex_lock(&wl->mutex);
3451
3452 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
3453 goto out;
3454 if (b43_debug(dev, B43_DBG_PWORK_STOP))
3455 goto out_requeue;
3456
3457 do_periodic_work(dev);
3458
3459 dev->periodic_state++;
3460out_requeue:
3461 if (b43_debug(dev, B43_DBG_PWORK_FAST))
3462 delay = msecs_to_jiffies(50);
3463 else
3464 delay = round_jiffies_relative(HZ * 15);
3465 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
3466out:
3467 mutex_unlock(&wl->mutex);
3468}
3469
3470static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3471{
3472 struct delayed_work *work = &dev->periodic_work;
3473
3474 dev->periodic_state = 0;
3475 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3476 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3477}
3478
3479/* Check if communication with the device works correctly. */
3480static int b43_validate_chipaccess(struct b43_wldev *dev)
3481{
3482 u32 v, backup0, backup4;
3483
3484 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3485 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3486
3487 /* Check for read/write and endianness problems. */
3488 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3489 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3490 goto error;
3491 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3492 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3493 goto error;
3494
3495 /* Check if unaligned 32bit SHM_SHARED access works properly.
3496 * However, don't bail out on failure, because it's noncritical. */
3497 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3498 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3499 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3500 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3501 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3502 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3503 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3504 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3505 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3506 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3507 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3508 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3509
3510 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3511 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3512
3513 if ((dev->dev->core_rev >= 3) && (dev->dev->core_rev <= 10)) {
3514 /* The 32bit register shadows the two 16bit registers
3515 * with update sideeffects. Validate this. */
3516 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3517 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3518 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3519 goto error;
3520 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3521 goto error;
3522 }
3523 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3524
3525 v = b43_read32(dev, B43_MMIO_MACCTL);
3526 v |= B43_MACCTL_GMODE;
3527 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3528 goto error;
3529
3530 return 0;
3531error:
3532 b43err(dev->wl, "Failed to validate the chipaccess\n");
3533 return -ENODEV;
3534}
3535
3536static void b43_security_init(struct b43_wldev *dev)
3537{
3538 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3539 /* KTP is a word address, but we address SHM bytewise.
3540 * So multiply by two.
3541 */
3542 dev->ktp *= 2;
3543 /* Number of RCMTA address slots */
3544 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3545 /* Clear the key memory. */
3546 b43_clear_keys(dev);
3547}
3548
3549#ifdef CONFIG_B43_HWRNG
3550static int b43_rng_read(struct hwrng *rng, u32 *data)
3551{
3552 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3553 struct b43_wldev *dev;
3554 int count = -ENODEV;
3555
3556 mutex_lock(&wl->mutex);
3557 dev = wl->current_dev;
3558 if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3559 *data = b43_read16(dev, B43_MMIO_RNG);
3560 count = sizeof(u16);
3561 }
3562 mutex_unlock(&wl->mutex);
3563
3564 return count;
3565}
3566#endif /* CONFIG_B43_HWRNG */
3567
3568static void b43_rng_exit(struct b43_wl *wl)
3569{
3570#ifdef CONFIG_B43_HWRNG
3571 if (wl->rng_initialized)
3572 hwrng_unregister(&wl->rng);
3573#endif /* CONFIG_B43_HWRNG */
3574}
3575
3576static int b43_rng_init(struct b43_wl *wl)
3577{
3578 int err = 0;
3579
3580#ifdef CONFIG_B43_HWRNG
3581 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3582 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3583 wl->rng.name = wl->rng_name;
3584 wl->rng.data_read = b43_rng_read;
3585 wl->rng.priv = (unsigned long)wl;
3586 wl->rng_initialized = true;
3587 err = hwrng_register(&wl->rng);
3588 if (err) {
3589 wl->rng_initialized = false;
3590 b43err(wl, "Failed to register the random "
3591 "number generator (%d)\n", err);
3592 }
3593#endif /* CONFIG_B43_HWRNG */
3594
3595 return err;
3596}
3597
3598static void b43_tx_work(struct work_struct *work)
3599{
3600 struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3601 struct b43_wldev *dev;
3602 struct sk_buff *skb;
3603 int queue_num;
3604 int err = 0;
3605
3606 mutex_lock(&wl->mutex);
3607 dev = wl->current_dev;
3608 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3609 mutex_unlock(&wl->mutex);
3610 return;
3611 }
3612
3613 for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
3614 while (skb_queue_len(&wl->tx_queue[queue_num])) {
3615 skb = skb_dequeue(&wl->tx_queue[queue_num]);
3616 if (b43_using_pio_transfers(dev))
3617 err = b43_pio_tx(dev, skb);
3618 else
3619 err = b43_dma_tx(dev, skb);
3620 if (err == -ENOSPC) {
3621 wl->tx_queue_stopped[queue_num] = 1;
3622 ieee80211_stop_queue(wl->hw, queue_num);
3623 skb_queue_head(&wl->tx_queue[queue_num], skb);
3624 break;
3625 }
3626 if (unlikely(err))
3627 ieee80211_free_txskb(wl->hw, skb);
3628 err = 0;
3629 }
3630
3631 if (!err)
3632 wl->tx_queue_stopped[queue_num] = 0;
3633 }
3634
3635#if B43_DEBUG
3636 dev->tx_count++;
3637#endif
3638 mutex_unlock(&wl->mutex);
3639}
3640
3641static void b43_op_tx(struct ieee80211_hw *hw,
3642 struct ieee80211_tx_control *control,
3643 struct sk_buff *skb)
3644{
3645 struct b43_wl *wl = hw_to_b43_wl(hw);
3646
3647 if (unlikely(skb->len < 2 + 2 + 6)) {
3648 /* Too short, this can't be a valid frame. */
3649 ieee80211_free_txskb(hw, skb);
3650 return;
3651 }
3652 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3653
3654 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
3655 if (!wl->tx_queue_stopped[skb->queue_mapping]) {
3656 ieee80211_queue_work(wl->hw, &wl->tx_work);
3657 } else {
3658 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
3659 }
3660}
3661
3662static void b43_qos_params_upload(struct b43_wldev *dev,
3663 const struct ieee80211_tx_queue_params *p,
3664 u16 shm_offset)
3665{
3666 u16 params[B43_NR_QOSPARAMS];
3667 int bslots, tmp;
3668 unsigned int i;
3669
3670 if (!dev->qos_enabled)
3671 return;
3672
3673 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3674
3675 memset(¶ms, 0, sizeof(params));
3676
3677 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3678 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3679 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3680 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3681 params[B43_QOSPARAM_AIFS] = p->aifs;
3682 params[B43_QOSPARAM_BSLOTS] = bslots;
3683 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3684
3685 for (i = 0; i < ARRAY_SIZE(params); i++) {
3686 if (i == B43_QOSPARAM_STATUS) {
3687 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3688 shm_offset + (i * 2));
3689 /* Mark the parameters as updated. */
3690 tmp |= 0x100;
3691 b43_shm_write16(dev, B43_SHM_SHARED,
3692 shm_offset + (i * 2),
3693 tmp);
3694 } else {
3695 b43_shm_write16(dev, B43_SHM_SHARED,
3696 shm_offset + (i * 2),
3697 params[i]);
3698 }
3699 }
3700}
3701
3702/* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3703static const u16 b43_qos_shm_offsets[] = {
3704 /* [mac80211-queue-nr] = SHM_OFFSET, */
3705 [0] = B43_QOS_VOICE,
3706 [1] = B43_QOS_VIDEO,
3707 [2] = B43_QOS_BESTEFFORT,
3708 [3] = B43_QOS_BACKGROUND,
3709};
3710
3711/* Update all QOS parameters in hardware. */
3712static void b43_qos_upload_all(struct b43_wldev *dev)
3713{
3714 struct b43_wl *wl = dev->wl;
3715 struct b43_qos_params *params;
3716 unsigned int i;
3717
3718 if (!dev->qos_enabled)
3719 return;
3720
3721 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3722 ARRAY_SIZE(wl->qos_params));
3723
3724 b43_mac_suspend(dev);
3725 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3726 params = &(wl->qos_params[i]);
3727 b43_qos_params_upload(dev, &(params->p),
3728 b43_qos_shm_offsets[i]);
3729 }
3730 b43_mac_enable(dev);
3731}
3732
3733static void b43_qos_clear(struct b43_wl *wl)
3734{
3735 struct b43_qos_params *params;
3736 unsigned int i;
3737
3738 /* Initialize QoS parameters to sane defaults. */
3739
3740 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3741 ARRAY_SIZE(wl->qos_params));
3742
3743 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3744 params = &(wl->qos_params[i]);
3745
3746 switch (b43_qos_shm_offsets[i]) {
3747 case B43_QOS_VOICE:
3748 params->p.txop = 0;
3749 params->p.aifs = 2;
3750 params->p.cw_min = 0x0001;
3751 params->p.cw_max = 0x0001;
3752 break;
3753 case B43_QOS_VIDEO:
3754 params->p.txop = 0;
3755 params->p.aifs = 2;
3756 params->p.cw_min = 0x0001;
3757 params->p.cw_max = 0x0001;
3758 break;
3759 case B43_QOS_BESTEFFORT:
3760 params->p.txop = 0;
3761 params->p.aifs = 3;
3762 params->p.cw_min = 0x0001;
3763 params->p.cw_max = 0x03FF;
3764 break;
3765 case B43_QOS_BACKGROUND:
3766 params->p.txop = 0;
3767 params->p.aifs = 7;
3768 params->p.cw_min = 0x0001;
3769 params->p.cw_max = 0x03FF;
3770 break;
3771 default:
3772 B43_WARN_ON(1);
3773 }
3774 }
3775}
3776
3777/* Initialize the core's QOS capabilities */
3778static void b43_qos_init(struct b43_wldev *dev)
3779{
3780 if (!dev->qos_enabled) {
3781 /* Disable QOS support. */
3782 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3783 b43_write16(dev, B43_MMIO_IFSCTL,
3784 b43_read16(dev, B43_MMIO_IFSCTL)
3785 & ~B43_MMIO_IFSCTL_USE_EDCF);
3786 b43dbg(dev->wl, "QoS disabled\n");
3787 return;
3788 }
3789
3790 /* Upload the current QOS parameters. */
3791 b43_qos_upload_all(dev);
3792
3793 /* Enable QOS support. */
3794 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3795 b43_write16(dev, B43_MMIO_IFSCTL,
3796 b43_read16(dev, B43_MMIO_IFSCTL)
3797 | B43_MMIO_IFSCTL_USE_EDCF);
3798 b43dbg(dev->wl, "QoS enabled\n");
3799}
3800
3801static int b43_op_conf_tx(struct ieee80211_hw *hw,
3802 struct ieee80211_vif *vif, u16 _queue,
3803 const struct ieee80211_tx_queue_params *params)
3804{
3805 struct b43_wl *wl = hw_to_b43_wl(hw);
3806 struct b43_wldev *dev;
3807 unsigned int queue = (unsigned int)_queue;
3808 int err = -ENODEV;
3809
3810 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3811 /* Queue not available or don't support setting
3812 * params on this queue. Return success to not
3813 * confuse mac80211. */
3814 return 0;
3815 }
3816 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3817 ARRAY_SIZE(wl->qos_params));
3818
3819 mutex_lock(&wl->mutex);
3820 dev = wl->current_dev;
3821 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3822 goto out_unlock;
3823
3824 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3825 b43_mac_suspend(dev);
3826 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3827 b43_qos_shm_offsets[queue]);
3828 b43_mac_enable(dev);
3829 err = 0;
3830
3831out_unlock:
3832 mutex_unlock(&wl->mutex);
3833
3834 return err;
3835}
3836
3837static int b43_op_get_stats(struct ieee80211_hw *hw,
3838 struct ieee80211_low_level_stats *stats)
3839{
3840 struct b43_wl *wl = hw_to_b43_wl(hw);
3841
3842 mutex_lock(&wl->mutex);
3843 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3844 mutex_unlock(&wl->mutex);
3845
3846 return 0;
3847}
3848
3849static u64 b43_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
3850{
3851 struct b43_wl *wl = hw_to_b43_wl(hw);
3852 struct b43_wldev *dev;
3853 u64 tsf;
3854
3855 mutex_lock(&wl->mutex);
3856 dev = wl->current_dev;
3857
3858 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3859 b43_tsf_read(dev, &tsf);
3860 else
3861 tsf = 0;
3862
3863 mutex_unlock(&wl->mutex);
3864
3865 return tsf;
3866}
3867
3868static void b43_op_set_tsf(struct ieee80211_hw *hw,
3869 struct ieee80211_vif *vif, u64 tsf)
3870{
3871 struct b43_wl *wl = hw_to_b43_wl(hw);
3872 struct b43_wldev *dev;
3873
3874 mutex_lock(&wl->mutex);
3875 dev = wl->current_dev;
3876
3877 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3878 b43_tsf_write(dev, tsf);
3879
3880 mutex_unlock(&wl->mutex);
3881}
3882
3883static const char *band_to_string(enum ieee80211_band band)
3884{
3885 switch (band) {
3886 case IEEE80211_BAND_5GHZ:
3887 return "5";
3888 case IEEE80211_BAND_2GHZ:
3889 return "2.4";
3890 default:
3891 break;
3892 }
3893 B43_WARN_ON(1);
3894 return "";
3895}
3896
3897/* Expects wl->mutex locked */
3898static int b43_switch_band(struct b43_wldev *dev,
3899 struct ieee80211_channel *chan)
3900{
3901 struct b43_phy *phy = &dev->phy;
3902 bool gmode;
3903 u32 tmp;
3904
3905 switch (chan->band) {
3906 case IEEE80211_BAND_5GHZ:
3907 gmode = false;
3908 break;
3909 case IEEE80211_BAND_2GHZ:
3910 gmode = true;
3911 break;
3912 default:
3913 B43_WARN_ON(1);
3914 return -EINVAL;
3915 }
3916
3917 if (!((gmode && phy->supports_2ghz) ||
3918 (!gmode && phy->supports_5ghz))) {
3919 b43err(dev->wl, "This device doesn't support %s-GHz band\n",
3920 band_to_string(chan->band));
3921 return -ENODEV;
3922 }
3923
3924 if (!!phy->gmode == !!gmode) {
3925 /* This device is already running. */
3926 return 0;
3927 }
3928
3929 b43dbg(dev->wl, "Switching to %s GHz band\n",
3930 band_to_string(chan->band));
3931
3932 /* Some new devices don't need disabling radio for band switching */
3933 if (!(phy->type == B43_PHYTYPE_N && phy->rev >= 3))
3934 b43_software_rfkill(dev, true);
3935
3936 phy->gmode = gmode;
3937 b43_phy_put_into_reset(dev);
3938 switch (dev->dev->bus_type) {
3939#ifdef CONFIG_B43_BCMA
3940 case B43_BUS_BCMA:
3941 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
3942 if (gmode)
3943 tmp |= B43_BCMA_IOCTL_GMODE;
3944 else
3945 tmp &= ~B43_BCMA_IOCTL_GMODE;
3946 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
3947 break;
3948#endif
3949#ifdef CONFIG_B43_SSB
3950 case B43_BUS_SSB:
3951 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
3952 if (gmode)
3953 tmp |= B43_TMSLOW_GMODE;
3954 else
3955 tmp &= ~B43_TMSLOW_GMODE;
3956 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
3957 break;
3958#endif
3959 }
3960 b43_phy_take_out_of_reset(dev);
3961
3962 b43_upload_initvals_band(dev);
3963
3964 b43_phy_init(dev);
3965
3966 return 0;
3967}
3968
3969static void b43_set_beacon_listen_interval(struct b43_wldev *dev, u16 interval)
3970{
3971 interval = min_t(u16, interval, (u16)0xFF);
3972 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BCN_LI, interval);
3973}
3974
3975/* Write the short and long frame retry limit values. */
3976static void b43_set_retry_limits(struct b43_wldev *dev,
3977 unsigned int short_retry,
3978 unsigned int long_retry)
3979{
3980 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3981 * the chip-internal counter. */
3982 short_retry = min(short_retry, (unsigned int)0xF);
3983 long_retry = min(long_retry, (unsigned int)0xF);
3984
3985 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3986 short_retry);
3987 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3988 long_retry);
3989}
3990
3991static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3992{
3993 struct b43_wl *wl = hw_to_b43_wl(hw);
3994 struct b43_wldev *dev = wl->current_dev;
3995 struct b43_phy *phy = &dev->phy;
3996 struct ieee80211_conf *conf = &hw->conf;
3997 int antenna;
3998 int err = 0;
3999
4000 mutex_lock(&wl->mutex);
4001 b43_mac_suspend(dev);
4002
4003 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL)
4004 b43_set_beacon_listen_interval(dev, conf->listen_interval);
4005
4006 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4007 phy->chandef = &conf->chandef;
4008 phy->channel = conf->chandef.chan->hw_value;
4009
4010 /* Switch the band (if necessary). */
4011 err = b43_switch_band(dev, conf->chandef.chan);
4012 if (err)
4013 goto out_mac_enable;
4014
4015 /* Switch to the requested channel.
4016 * The firmware takes care of races with the TX handler.
4017 */
4018 b43_switch_channel(dev, phy->channel);
4019 }
4020
4021 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
4022 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
4023 conf->long_frame_max_tx_count);
4024 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
4025 if (!changed)
4026 goto out_mac_enable;
4027
4028 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
4029
4030 /* Adjust the desired TX power level. */
4031 if (conf->power_level != 0) {
4032 if (conf->power_level != phy->desired_txpower) {
4033 phy->desired_txpower = conf->power_level;
4034 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
4035 B43_TXPWR_IGNORE_TSSI);
4036 }
4037 }
4038
4039 /* Antennas for RX and management frame TX. */
4040 antenna = B43_ANTENNA_DEFAULT;
4041 b43_mgmtframe_txantenna(dev, antenna);
4042 antenna = B43_ANTENNA_DEFAULT;
4043 if (phy->ops->set_rx_antenna)
4044 phy->ops->set_rx_antenna(dev, antenna);
4045
4046 if (wl->radio_enabled != phy->radio_on) {
4047 if (wl->radio_enabled) {
4048 b43_software_rfkill(dev, false);
4049 b43info(dev->wl, "Radio turned on by software\n");
4050 if (!dev->radio_hw_enable) {
4051 b43info(dev->wl, "The hardware RF-kill button "
4052 "still turns the radio physically off. "
4053 "Press the button to turn it on.\n");
4054 }
4055 } else {
4056 b43_software_rfkill(dev, true);
4057 b43info(dev->wl, "Radio turned off by software\n");
4058 }
4059 }
4060
4061out_mac_enable:
4062 b43_mac_enable(dev);
4063 mutex_unlock(&wl->mutex);
4064
4065 return err;
4066}
4067
4068static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
4069{
4070 struct ieee80211_supported_band *sband =
4071 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
4072 struct ieee80211_rate *rate;
4073 int i;
4074 u16 basic, direct, offset, basic_offset, rateptr;
4075
4076 for (i = 0; i < sband->n_bitrates; i++) {
4077 rate = &sband->bitrates[i];
4078
4079 if (b43_is_cck_rate(rate->hw_value)) {
4080 direct = B43_SHM_SH_CCKDIRECT;
4081 basic = B43_SHM_SH_CCKBASIC;
4082 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
4083 offset &= 0xF;
4084 } else {
4085 direct = B43_SHM_SH_OFDMDIRECT;
4086 basic = B43_SHM_SH_OFDMBASIC;
4087 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
4088 offset &= 0xF;
4089 }
4090
4091 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
4092
4093 if (b43_is_cck_rate(rate->hw_value)) {
4094 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
4095 basic_offset &= 0xF;
4096 } else {
4097 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
4098 basic_offset &= 0xF;
4099 }
4100
4101 /*
4102 * Get the pointer that we need to point to
4103 * from the direct map
4104 */
4105 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
4106 direct + 2 * basic_offset);
4107 /* and write it to the basic map */
4108 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
4109 rateptr);
4110 }
4111}
4112
4113static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
4114 struct ieee80211_vif *vif,
4115 struct ieee80211_bss_conf *conf,
4116 u32 changed)
4117{
4118 struct b43_wl *wl = hw_to_b43_wl(hw);
4119 struct b43_wldev *dev;
4120
4121 mutex_lock(&wl->mutex);
4122
4123 dev = wl->current_dev;
4124 if (!dev || b43_status(dev) < B43_STAT_STARTED)
4125 goto out_unlock_mutex;
4126
4127 B43_WARN_ON(wl->vif != vif);
4128
4129 if (changed & BSS_CHANGED_BSSID) {
4130 if (conf->bssid)
4131 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
4132 else
4133 eth_zero_addr(wl->bssid);
4134 }
4135
4136 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
4137 if (changed & BSS_CHANGED_BEACON &&
4138 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
4139 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
4140 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
4141 b43_update_templates(wl);
4142
4143 if (changed & BSS_CHANGED_BSSID)
4144 b43_write_mac_bssid_templates(dev);
4145 }
4146
4147 b43_mac_suspend(dev);
4148
4149 /* Update templates for AP/mesh mode. */
4150 if (changed & BSS_CHANGED_BEACON_INT &&
4151 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
4152 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
4153 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) &&
4154 conf->beacon_int)
4155 b43_set_beacon_int(dev, conf->beacon_int);
4156
4157 if (changed & BSS_CHANGED_BASIC_RATES)
4158 b43_update_basic_rates(dev, conf->basic_rates);
4159
4160 if (changed & BSS_CHANGED_ERP_SLOT) {
4161 if (conf->use_short_slot)
4162 b43_short_slot_timing_enable(dev);
4163 else
4164 b43_short_slot_timing_disable(dev);
4165 }
4166
4167 b43_mac_enable(dev);
4168out_unlock_mutex:
4169 mutex_unlock(&wl->mutex);
4170}
4171
4172static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4173 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
4174 struct ieee80211_key_conf *key)
4175{
4176 struct b43_wl *wl = hw_to_b43_wl(hw);
4177 struct b43_wldev *dev;
4178 u8 algorithm;
4179 u8 index;
4180 int err;
4181 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
4182
4183 if (modparam_nohwcrypt)
4184 return -ENOSPC; /* User disabled HW-crypto */
4185
4186 if ((vif->type == NL80211_IFTYPE_ADHOC ||
4187 vif->type == NL80211_IFTYPE_MESH_POINT) &&
4188 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
4189 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
4190 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
4191 /*
4192 * For now, disable hw crypto for the RSN IBSS group keys. This
4193 * could be optimized in the future, but until that gets
4194 * implemented, use of software crypto for group addressed
4195 * frames is a acceptable to allow RSN IBSS to be used.
4196 */
4197 return -EOPNOTSUPP;
4198 }
4199
4200 mutex_lock(&wl->mutex);
4201
4202 dev = wl->current_dev;
4203 err = -ENODEV;
4204 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
4205 goto out_unlock;
4206
4207 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
4208 /* We don't have firmware for the crypto engine.
4209 * Must use software-crypto. */
4210 err = -EOPNOTSUPP;
4211 goto out_unlock;
4212 }
4213
4214 err = -EINVAL;
4215 switch (key->cipher) {
4216 case WLAN_CIPHER_SUITE_WEP40:
4217 algorithm = B43_SEC_ALGO_WEP40;
4218 break;
4219 case WLAN_CIPHER_SUITE_WEP104:
4220 algorithm = B43_SEC_ALGO_WEP104;
4221 break;
4222 case WLAN_CIPHER_SUITE_TKIP:
4223 algorithm = B43_SEC_ALGO_TKIP;
4224 break;
4225 case WLAN_CIPHER_SUITE_CCMP:
4226 algorithm = B43_SEC_ALGO_AES;
4227 break;
4228 default:
4229 B43_WARN_ON(1);
4230 goto out_unlock;
4231 }
4232 index = (u8) (key->keyidx);
4233 if (index > 3)
4234 goto out_unlock;
4235
4236 switch (cmd) {
4237 case SET_KEY:
4238 if (algorithm == B43_SEC_ALGO_TKIP &&
4239 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
4240 !modparam_hwtkip)) {
4241 /* We support only pairwise key */
4242 err = -EOPNOTSUPP;
4243 goto out_unlock;
4244 }
4245
4246 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
4247 if (WARN_ON(!sta)) {
4248 err = -EOPNOTSUPP;
4249 goto out_unlock;
4250 }
4251 /* Pairwise key with an assigned MAC address. */
4252 err = b43_key_write(dev, -1, algorithm,
4253 key->key, key->keylen,
4254 sta->addr, key);
4255 } else {
4256 /* Group key */
4257 err = b43_key_write(dev, index, algorithm,
4258 key->key, key->keylen, NULL, key);
4259 }
4260 if (err)
4261 goto out_unlock;
4262
4263 if (algorithm == B43_SEC_ALGO_WEP40 ||
4264 algorithm == B43_SEC_ALGO_WEP104) {
4265 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
4266 } else {
4267 b43_hf_write(dev,
4268 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
4269 }
4270 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4271 if (algorithm == B43_SEC_ALGO_TKIP)
4272 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
4273 break;
4274 case DISABLE_KEY: {
4275 err = b43_key_clear(dev, key->hw_key_idx);
4276 if (err)
4277 goto out_unlock;
4278 break;
4279 }
4280 default:
4281 B43_WARN_ON(1);
4282 }
4283
4284out_unlock:
4285 if (!err) {
4286 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
4287 "mac: %pM\n",
4288 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
4289 sta ? sta->addr : bcast_addr);
4290 b43_dump_keymemory(dev);
4291 }
4292 mutex_unlock(&wl->mutex);
4293
4294 return err;
4295}
4296
4297static void b43_op_configure_filter(struct ieee80211_hw *hw,
4298 unsigned int changed, unsigned int *fflags,
4299 u64 multicast)
4300{
4301 struct b43_wl *wl = hw_to_b43_wl(hw);
4302 struct b43_wldev *dev;
4303
4304 mutex_lock(&wl->mutex);
4305 dev = wl->current_dev;
4306 if (!dev) {
4307 *fflags = 0;
4308 goto out_unlock;
4309 }
4310
4311 *fflags &= FIF_ALLMULTI |
4312 FIF_FCSFAIL |
4313 FIF_PLCPFAIL |
4314 FIF_CONTROL |
4315 FIF_OTHER_BSS |
4316 FIF_BCN_PRBRESP_PROMISC;
4317
4318 changed &= FIF_ALLMULTI |
4319 FIF_FCSFAIL |
4320 FIF_PLCPFAIL |
4321 FIF_CONTROL |
4322 FIF_OTHER_BSS |
4323 FIF_BCN_PRBRESP_PROMISC;
4324
4325 wl->filter_flags = *fflags;
4326
4327 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
4328 b43_adjust_opmode(dev);
4329
4330out_unlock:
4331 mutex_unlock(&wl->mutex);
4332}
4333
4334/* Locking: wl->mutex
4335 * Returns the current dev. This might be different from the passed in dev,
4336 * because the core might be gone away while we unlocked the mutex. */
4337static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
4338{
4339 struct b43_wl *wl;
4340 struct b43_wldev *orig_dev;
4341 u32 mask;
4342 int queue_num;
4343
4344 if (!dev)
4345 return NULL;
4346 wl = dev->wl;
4347redo:
4348 if (!dev || b43_status(dev) < B43_STAT_STARTED)
4349 return dev;
4350
4351 /* Cancel work. Unlock to avoid deadlocks. */
4352 mutex_unlock(&wl->mutex);
4353 cancel_delayed_work_sync(&dev->periodic_work);
4354 cancel_work_sync(&wl->tx_work);
4355 b43_leds_stop(dev);
4356 mutex_lock(&wl->mutex);
4357 dev = wl->current_dev;
4358 if (!dev || b43_status(dev) < B43_STAT_STARTED) {
4359 /* Whoops, aliens ate up the device while we were unlocked. */
4360 return dev;
4361 }
4362
4363 /* Disable interrupts on the device. */
4364 b43_set_status(dev, B43_STAT_INITIALIZED);
4365 if (b43_bus_host_is_sdio(dev->dev)) {
4366 /* wl->mutex is locked. That is enough. */
4367 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
4368 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
4369 } else {
4370 spin_lock_irq(&wl->hardirq_lock);
4371 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
4372 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
4373 spin_unlock_irq(&wl->hardirq_lock);
4374 }
4375 /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
4376 orig_dev = dev;
4377 mutex_unlock(&wl->mutex);
4378 if (b43_bus_host_is_sdio(dev->dev))
4379 b43_sdio_free_irq(dev);
4380 else
4381 free_irq(dev->dev->irq, dev);
4382 mutex_lock(&wl->mutex);
4383 dev = wl->current_dev;
4384 if (!dev)
4385 return dev;
4386 if (dev != orig_dev) {
4387 if (b43_status(dev) >= B43_STAT_STARTED)
4388 goto redo;
4389 return dev;
4390 }
4391 mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
4392 B43_WARN_ON(mask != 0xFFFFFFFF && mask);
4393
4394 /* Drain all TX queues. */
4395 for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
4396 while (skb_queue_len(&wl->tx_queue[queue_num])) {
4397 struct sk_buff *skb;
4398
4399 skb = skb_dequeue(&wl->tx_queue[queue_num]);
4400 ieee80211_free_txskb(wl->hw, skb);
4401 }
4402 }
4403
4404 b43_mac_suspend(dev);
4405 b43_leds_exit(dev);
4406 b43dbg(wl, "Wireless interface stopped\n");
4407
4408 return dev;
4409}
4410
4411/* Locking: wl->mutex */
4412static int b43_wireless_core_start(struct b43_wldev *dev)
4413{
4414 int err;
4415
4416 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
4417
4418 drain_txstatus_queue(dev);
4419 if (b43_bus_host_is_sdio(dev->dev)) {
4420 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
4421 if (err) {
4422 b43err(dev->wl, "Cannot request SDIO IRQ\n");
4423 goto out;
4424 }
4425 } else {
4426 err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
4427 b43_interrupt_thread_handler,
4428 IRQF_SHARED, KBUILD_MODNAME, dev);
4429 if (err) {
4430 b43err(dev->wl, "Cannot request IRQ-%d\n",
4431 dev->dev->irq);
4432 goto out;
4433 }
4434 }
4435
4436 /* We are ready to run. */
4437 ieee80211_wake_queues(dev->wl->hw);
4438 b43_set_status(dev, B43_STAT_STARTED);
4439
4440 /* Start data flow (TX/RX). */
4441 b43_mac_enable(dev);
4442 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
4443
4444 /* Start maintenance work */
4445 b43_periodic_tasks_setup(dev);
4446
4447 b43_leds_init(dev);
4448
4449 b43dbg(dev->wl, "Wireless interface started\n");
4450out:
4451 return err;
4452}
4453
4454static char *b43_phy_name(struct b43_wldev *dev, u8 phy_type)
4455{
4456 switch (phy_type) {
4457 case B43_PHYTYPE_A:
4458 return "A";
4459 case B43_PHYTYPE_B:
4460 return "B";
4461 case B43_PHYTYPE_G:
4462 return "G";
4463 case B43_PHYTYPE_N:
4464 return "N";
4465 case B43_PHYTYPE_LP:
4466 return "LP";
4467 case B43_PHYTYPE_SSLPN:
4468 return "SSLPN";
4469 case B43_PHYTYPE_HT:
4470 return "HT";
4471 case B43_PHYTYPE_LCN:
4472 return "LCN";
4473 case B43_PHYTYPE_LCNXN:
4474 return "LCNXN";
4475 case B43_PHYTYPE_LCN40:
4476 return "LCN40";
4477 case B43_PHYTYPE_AC:
4478 return "AC";
4479 }
4480 return "UNKNOWN";
4481}
4482
4483/* Get PHY and RADIO versioning numbers */
4484static int b43_phy_versioning(struct b43_wldev *dev)
4485{
4486 struct b43_phy *phy = &dev->phy;
4487 const u8 core_rev = dev->dev->core_rev;
4488 u32 tmp;
4489 u8 analog_type;
4490 u8 phy_type;
4491 u8 phy_rev;
4492 u16 radio_manuf;
4493 u16 radio_id;
4494 u16 radio_rev;
4495 u8 radio_ver;
4496 int unsupported = 0;
4497
4498 /* Get PHY versioning */
4499 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4500 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4501 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4502 phy_rev = (tmp & B43_PHYVER_VERSION);
4503
4504 /* LCNXN is continuation of N which run out of revisions */
4505 if (phy_type == B43_PHYTYPE_LCNXN) {
4506 phy_type = B43_PHYTYPE_N;
4507 phy_rev += 16;
4508 }
4509
4510 switch (phy_type) {
4511#ifdef CONFIG_B43_PHY_G
4512 case B43_PHYTYPE_G:
4513 if (phy_rev > 9)
4514 unsupported = 1;
4515 break;
4516#endif
4517#ifdef CONFIG_B43_PHY_N
4518 case B43_PHYTYPE_N:
4519 if (phy_rev >= 19)
4520 unsupported = 1;
4521 break;
4522#endif
4523#ifdef CONFIG_B43_PHY_LP
4524 case B43_PHYTYPE_LP:
4525 if (phy_rev > 2)
4526 unsupported = 1;
4527 break;
4528#endif
4529#ifdef CONFIG_B43_PHY_HT
4530 case B43_PHYTYPE_HT:
4531 if (phy_rev > 1)
4532 unsupported = 1;
4533 break;
4534#endif
4535#ifdef CONFIG_B43_PHY_LCN
4536 case B43_PHYTYPE_LCN:
4537 if (phy_rev > 1)
4538 unsupported = 1;
4539 break;
4540#endif
4541#ifdef CONFIG_B43_PHY_AC
4542 case B43_PHYTYPE_AC:
4543 if (phy_rev > 1)
4544 unsupported = 1;
4545 break;
4546#endif
4547 default:
4548 unsupported = 1;
4549 }
4550 if (unsupported) {
4551 b43err(dev->wl, "FOUND UNSUPPORTED PHY (Analog %u, Type %d (%s), Revision %u)\n",
4552 analog_type, phy_type, b43_phy_name(dev, phy_type),
4553 phy_rev);
4554 return -EOPNOTSUPP;
4555 }
4556 b43info(dev->wl, "Found PHY: Analog %u, Type %d (%s), Revision %u\n",
4557 analog_type, phy_type, b43_phy_name(dev, phy_type), phy_rev);
4558
4559 /* Get RADIO versioning */
4560 if (core_rev == 40 || core_rev == 42) {
4561 radio_manuf = 0x17F;
4562
4563 b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, 0);
4564 radio_rev = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4565
4566 b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, 1);
4567 radio_id = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4568
4569 radio_ver = 0; /* Is there version somewhere? */
4570 } else if (core_rev >= 24) {
4571 u16 radio24[3];
4572
4573 for (tmp = 0; tmp < 3; tmp++) {
4574 b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, tmp);
4575 radio24[tmp] = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4576 }
4577
4578 radio_manuf = 0x17F;
4579 radio_id = (radio24[2] << 8) | radio24[1];
4580 radio_rev = (radio24[0] & 0xF);
4581 radio_ver = (radio24[0] & 0xF0) >> 4;
4582 } else {
4583 if (dev->dev->chip_id == 0x4317) {
4584 if (dev->dev->chip_rev == 0)
4585 tmp = 0x3205017F;
4586 else if (dev->dev->chip_rev == 1)
4587 tmp = 0x4205017F;
4588 else
4589 tmp = 0x5205017F;
4590 } else {
4591 b43_write16f(dev, B43_MMIO_RADIO_CONTROL,
4592 B43_RADIOCTL_ID);
4593 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4594 b43_write16f(dev, B43_MMIO_RADIO_CONTROL,
4595 B43_RADIOCTL_ID);
4596 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
4597 }
4598 radio_manuf = (tmp & 0x00000FFF);
4599 radio_id = (tmp & 0x0FFFF000) >> 12;
4600 radio_rev = (tmp & 0xF0000000) >> 28;
4601 radio_ver = 0; /* Probably not available on old hw */
4602 }
4603
4604 if (radio_manuf != 0x17F /* Broadcom */)
4605 unsupported = 1;
4606 switch (phy_type) {
4607 case B43_PHYTYPE_A:
4608 if (radio_id != 0x2060)
4609 unsupported = 1;
4610 if (radio_rev != 1)
4611 unsupported = 1;
4612 if (radio_manuf != 0x17F)
4613 unsupported = 1;
4614 break;
4615 case B43_PHYTYPE_B:
4616 if ((radio_id & 0xFFF0) != 0x2050)
4617 unsupported = 1;
4618 break;
4619 case B43_PHYTYPE_G:
4620 if (radio_id != 0x2050)
4621 unsupported = 1;
4622 break;
4623 case B43_PHYTYPE_N:
4624 if (radio_id != 0x2055 && radio_id != 0x2056 &&
4625 radio_id != 0x2057)
4626 unsupported = 1;
4627 if (radio_id == 0x2057 &&
4628 !(radio_rev == 9 || radio_rev == 14))
4629 unsupported = 1;
4630 break;
4631 case B43_PHYTYPE_LP:
4632 if (radio_id != 0x2062 && radio_id != 0x2063)
4633 unsupported = 1;
4634 break;
4635 case B43_PHYTYPE_HT:
4636 if (radio_id != 0x2059)
4637 unsupported = 1;
4638 break;
4639 case B43_PHYTYPE_LCN:
4640 if (radio_id != 0x2064)
4641 unsupported = 1;
4642 break;
4643 case B43_PHYTYPE_AC:
4644 if (radio_id != 0x2069)
4645 unsupported = 1;
4646 break;
4647 default:
4648 B43_WARN_ON(1);
4649 }
4650 if (unsupported) {
4651 b43err(dev->wl,
4652 "FOUND UNSUPPORTED RADIO (Manuf 0x%X, ID 0x%X, Revision %u, Version %u)\n",
4653 radio_manuf, radio_id, radio_rev, radio_ver);
4654 return -EOPNOTSUPP;
4655 }
4656 b43info(dev->wl,
4657 "Found Radio: Manuf 0x%X, ID 0x%X, Revision %u, Version %u\n",
4658 radio_manuf, radio_id, radio_rev, radio_ver);
4659
4660 /* FIXME: b43 treats "id" as "ver" and ignores the real "ver" */
4661 phy->radio_manuf = radio_manuf;
4662 phy->radio_ver = radio_id;
4663 phy->radio_rev = radio_rev;
4664
4665 phy->analog = analog_type;
4666 phy->type = phy_type;
4667 phy->rev = phy_rev;
4668
4669 return 0;
4670}
4671
4672static void setup_struct_phy_for_init(struct b43_wldev *dev,
4673 struct b43_phy *phy)
4674{
4675 phy->hardware_power_control = !!modparam_hwpctl;
4676 phy->next_txpwr_check_time = jiffies;
4677 /* PHY TX errors counter. */
4678 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4679
4680#if B43_DEBUG
4681 phy->phy_locked = false;
4682 phy->radio_locked = false;
4683#endif
4684}
4685
4686static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4687{
4688 dev->dfq_valid = false;
4689
4690 /* Assume the radio is enabled. If it's not enabled, the state will
4691 * immediately get fixed on the first periodic work run. */
4692 dev->radio_hw_enable = true;
4693
4694 /* Stats */
4695 memset(&dev->stats, 0, sizeof(dev->stats));
4696
4697 setup_struct_phy_for_init(dev, &dev->phy);
4698
4699 /* IRQ related flags */
4700 dev->irq_reason = 0;
4701 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4702 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4703 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4704 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4705
4706 dev->mac_suspended = 1;
4707
4708 /* Noise calculation context */
4709 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4710}
4711
4712static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4713{
4714 struct ssb_sprom *sprom = dev->dev->bus_sprom;
4715 u64 hf;
4716
4717 if (!modparam_btcoex)
4718 return;
4719 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4720 return;
4721 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4722 return;
4723
4724 hf = b43_hf_read(dev);
4725 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4726 hf |= B43_HF_BTCOEXALT;
4727 else
4728 hf |= B43_HF_BTCOEX;
4729 b43_hf_write(dev, hf);
4730}
4731
4732static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4733{
4734 if (!modparam_btcoex)
4735 return;
4736 //TODO
4737}
4738
4739static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4740{
4741 struct ssb_bus *bus;
4742 u32 tmp;
4743
4744#ifdef CONFIG_B43_SSB
4745 if (dev->dev->bus_type != B43_BUS_SSB)
4746 return;
4747#else
4748 return;
4749#endif
4750
4751 bus = dev->dev->sdev->bus;
4752
4753 if ((bus->chip_id == 0x4311 && bus->chip_rev == 2) ||
4754 (bus->chip_id == 0x4312)) {
4755 tmp = ssb_read32(dev->dev->sdev, SSB_IMCFGLO);
4756 tmp &= ~SSB_IMCFGLO_REQTO;
4757 tmp &= ~SSB_IMCFGLO_SERTO;
4758 tmp |= 0x3;
4759 ssb_write32(dev->dev->sdev, SSB_IMCFGLO, tmp);
4760 ssb_commit_settings(bus);
4761 }
4762}
4763
4764static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4765{
4766 u16 pu_delay;
4767
4768 /* The time value is in microseconds. */
4769 if (dev->phy.type == B43_PHYTYPE_A)
4770 pu_delay = 3700;
4771 else
4772 pu_delay = 1050;
4773 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4774 pu_delay = 500;
4775 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4776 pu_delay = max(pu_delay, (u16)2400);
4777
4778 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4779}
4780
4781/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4782static void b43_set_pretbtt(struct b43_wldev *dev)
4783{
4784 u16 pretbtt;
4785
4786 /* The time value is in microseconds. */
4787 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4788 pretbtt = 2;
4789 } else {
4790 if (dev->phy.type == B43_PHYTYPE_A)
4791 pretbtt = 120;
4792 else
4793 pretbtt = 250;
4794 }
4795 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4796 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4797}
4798
4799/* Shutdown a wireless core */
4800/* Locking: wl->mutex */
4801static void b43_wireless_core_exit(struct b43_wldev *dev)
4802{
4803 B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4804 if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4805 return;
4806
4807 b43_set_status(dev, B43_STAT_UNINIT);
4808
4809 /* Stop the microcode PSM. */
4810 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
4811 B43_MACCTL_PSM_JMP0);
4812
4813 switch (dev->dev->bus_type) {
4814#ifdef CONFIG_B43_BCMA
4815 case B43_BUS_BCMA:
4816 bcma_host_pci_down(dev->dev->bdev->bus);
4817 break;
4818#endif
4819#ifdef CONFIG_B43_SSB
4820 case B43_BUS_SSB:
4821 /* TODO */
4822 break;
4823#endif
4824 }
4825
4826 b43_dma_free(dev);
4827 b43_pio_free(dev);
4828 b43_chip_exit(dev);
4829 dev->phy.ops->switch_analog(dev, 0);
4830 if (dev->wl->current_beacon) {
4831 dev_kfree_skb_any(dev->wl->current_beacon);
4832 dev->wl->current_beacon = NULL;
4833 }
4834
4835 b43_device_disable(dev, 0);
4836 b43_bus_may_powerdown(dev);
4837}
4838
4839/* Initialize a wireless core */
4840static int b43_wireless_core_init(struct b43_wldev *dev)
4841{
4842 struct ssb_sprom *sprom = dev->dev->bus_sprom;
4843 struct b43_phy *phy = &dev->phy;
4844 int err;
4845 u64 hf;
4846
4847 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4848
4849 err = b43_bus_powerup(dev, 0);
4850 if (err)
4851 goto out;
4852 if (!b43_device_is_enabled(dev))
4853 b43_wireless_core_reset(dev, phy->gmode);
4854
4855 /* Reset all data structures. */
4856 setup_struct_wldev_for_init(dev);
4857 phy->ops->prepare_structs(dev);
4858
4859 /* Enable IRQ routing to this device. */
4860 switch (dev->dev->bus_type) {
4861#ifdef CONFIG_B43_BCMA
4862 case B43_BUS_BCMA:
4863 bcma_host_pci_irq_ctl(dev->dev->bdev->bus,
4864 dev->dev->bdev, true);
4865 bcma_host_pci_up(dev->dev->bdev->bus);
4866 break;
4867#endif
4868#ifdef CONFIG_B43_SSB
4869 case B43_BUS_SSB:
4870 ssb_pcicore_dev_irqvecs_enable(&dev->dev->sdev->bus->pcicore,
4871 dev->dev->sdev);
4872 break;
4873#endif
4874 }
4875
4876 b43_imcfglo_timeouts_workaround(dev);
4877 b43_bluetooth_coext_disable(dev);
4878 if (phy->ops->prepare_hardware) {
4879 err = phy->ops->prepare_hardware(dev);
4880 if (err)
4881 goto err_busdown;
4882 }
4883 err = b43_chip_init(dev);
4884 if (err)
4885 goto err_busdown;
4886 b43_shm_write16(dev, B43_SHM_SHARED,
4887 B43_SHM_SH_WLCOREREV, dev->dev->core_rev);
4888 hf = b43_hf_read(dev);
4889 if (phy->type == B43_PHYTYPE_G) {
4890 hf |= B43_HF_SYMW;
4891 if (phy->rev == 1)
4892 hf |= B43_HF_GDCW;
4893 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4894 hf |= B43_HF_OFDMPABOOST;
4895 }
4896 if (phy->radio_ver == 0x2050) {
4897 if (phy->radio_rev == 6)
4898 hf |= B43_HF_4318TSSI;
4899 if (phy->radio_rev < 6)
4900 hf |= B43_HF_VCORECALC;
4901 }
4902 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4903 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4904#if defined(CONFIG_B43_SSB) && defined(CONFIG_SSB_DRIVER_PCICORE)
4905 if (dev->dev->bus_type == B43_BUS_SSB &&
4906 dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI &&
4907 dev->dev->sdev->bus->pcicore.dev->id.revision <= 10)
4908 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4909#endif
4910 hf &= ~B43_HF_SKCFPUP;
4911 b43_hf_write(dev, hf);
4912
4913 /* tell the ucode MAC capabilities */
4914 if (dev->dev->core_rev >= 13) {
4915 u32 mac_hw_cap = b43_read32(dev, B43_MMIO_MAC_HW_CAP);
4916
4917 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_MACHW_L,
4918 mac_hw_cap & 0xffff);
4919 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_MACHW_H,
4920 (mac_hw_cap >> 16) & 0xffff);
4921 }
4922
4923 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4924 B43_DEFAULT_LONG_RETRY_LIMIT);
4925 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4926 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4927
4928 /* Disable sending probe responses from firmware.
4929 * Setting the MaxTime to one usec will always trigger
4930 * a timeout, so we never send any probe resp.
4931 * A timeout of zero is infinite. */
4932 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4933
4934 b43_rate_memory_init(dev);
4935 b43_set_phytxctl_defaults(dev);
4936
4937 /* Minimum Contention Window */
4938 if (phy->type == B43_PHYTYPE_B)
4939 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4940 else
4941 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4942 /* Maximum Contention Window */
4943 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4944
4945 /* write phytype and phyvers */
4946 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PHYTYPE, phy->type);
4947 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PHYVER, phy->rev);
4948
4949 if (b43_bus_host_is_pcmcia(dev->dev) ||
4950 b43_bus_host_is_sdio(dev->dev)) {
4951 dev->__using_pio_transfers = true;
4952 err = b43_pio_init(dev);
4953 } else if (dev->use_pio) {
4954 b43warn(dev->wl, "Forced PIO by use_pio module parameter. "
4955 "This should not be needed and will result in lower "
4956 "performance.\n");
4957 dev->__using_pio_transfers = true;
4958 err = b43_pio_init(dev);
4959 } else {
4960 dev->__using_pio_transfers = false;
4961 err = b43_dma_init(dev);
4962 }
4963 if (err)
4964 goto err_chip_exit;
4965 b43_qos_init(dev);
4966 b43_set_synth_pu_delay(dev, 1);
4967 b43_bluetooth_coext_enable(dev);
4968
4969 b43_bus_powerup(dev, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4970 b43_upload_card_macaddress(dev);
4971 b43_security_init(dev);
4972
4973 ieee80211_wake_queues(dev->wl->hw);
4974
4975 b43_set_status(dev, B43_STAT_INITIALIZED);
4976
4977out:
4978 return err;
4979
4980err_chip_exit:
4981 b43_chip_exit(dev);
4982err_busdown:
4983 b43_bus_may_powerdown(dev);
4984 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4985 return err;
4986}
4987
4988static int b43_op_add_interface(struct ieee80211_hw *hw,
4989 struct ieee80211_vif *vif)
4990{
4991 struct b43_wl *wl = hw_to_b43_wl(hw);
4992 struct b43_wldev *dev;
4993 int err = -EOPNOTSUPP;
4994
4995 /* TODO: allow WDS/AP devices to coexist */
4996
4997 if (vif->type != NL80211_IFTYPE_AP &&
4998 vif->type != NL80211_IFTYPE_MESH_POINT &&
4999 vif->type != NL80211_IFTYPE_STATION &&
5000 vif->type != NL80211_IFTYPE_WDS &&
5001 vif->type != NL80211_IFTYPE_ADHOC)
5002 return -EOPNOTSUPP;
5003
5004 mutex_lock(&wl->mutex);
5005 if (wl->operating)
5006 goto out_mutex_unlock;
5007
5008 b43dbg(wl, "Adding Interface type %d\n", vif->type);
5009
5010 dev = wl->current_dev;
5011 wl->operating = true;
5012 wl->vif = vif;
5013 wl->if_type = vif->type;
5014 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
5015
5016 b43_adjust_opmode(dev);
5017 b43_set_pretbtt(dev);
5018 b43_set_synth_pu_delay(dev, 0);
5019 b43_upload_card_macaddress(dev);
5020
5021 err = 0;
5022 out_mutex_unlock:
5023 mutex_unlock(&wl->mutex);
5024
5025 if (err == 0)
5026 b43_op_bss_info_changed(hw, vif, &vif->bss_conf, ~0);
5027
5028 return err;
5029}
5030
5031static void b43_op_remove_interface(struct ieee80211_hw *hw,
5032 struct ieee80211_vif *vif)
5033{
5034 struct b43_wl *wl = hw_to_b43_wl(hw);
5035 struct b43_wldev *dev = wl->current_dev;
5036
5037 b43dbg(wl, "Removing Interface type %d\n", vif->type);
5038
5039 mutex_lock(&wl->mutex);
5040
5041 B43_WARN_ON(!wl->operating);
5042 B43_WARN_ON(wl->vif != vif);
5043 wl->vif = NULL;
5044
5045 wl->operating = false;
5046
5047 b43_adjust_opmode(dev);
5048 eth_zero_addr(wl->mac_addr);
5049 b43_upload_card_macaddress(dev);
5050
5051 mutex_unlock(&wl->mutex);
5052}
5053
5054static int b43_op_start(struct ieee80211_hw *hw)
5055{
5056 struct b43_wl *wl = hw_to_b43_wl(hw);
5057 struct b43_wldev *dev = wl->current_dev;
5058 int did_init = 0;
5059 int err = 0;
5060
5061 /* Kill all old instance specific information to make sure
5062 * the card won't use it in the short timeframe between start
5063 * and mac80211 reconfiguring it. */
5064 eth_zero_addr(wl->bssid);
5065 eth_zero_addr(wl->mac_addr);
5066 wl->filter_flags = 0;
5067 wl->radiotap_enabled = false;
5068 b43_qos_clear(wl);
5069 wl->beacon0_uploaded = false;
5070 wl->beacon1_uploaded = false;
5071 wl->beacon_templates_virgin = true;
5072 wl->radio_enabled = true;
5073
5074 mutex_lock(&wl->mutex);
5075
5076 if (b43_status(dev) < B43_STAT_INITIALIZED) {
5077 err = b43_wireless_core_init(dev);
5078 if (err)
5079 goto out_mutex_unlock;
5080 did_init = 1;
5081 }
5082
5083 if (b43_status(dev) < B43_STAT_STARTED) {
5084 err = b43_wireless_core_start(dev);
5085 if (err) {
5086 if (did_init)
5087 b43_wireless_core_exit(dev);
5088 goto out_mutex_unlock;
5089 }
5090 }
5091
5092 /* XXX: only do if device doesn't support rfkill irq */
5093 wiphy_rfkill_start_polling(hw->wiphy);
5094
5095 out_mutex_unlock:
5096 mutex_unlock(&wl->mutex);
5097
5098 /*
5099 * Configuration may have been overwritten during initialization.
5100 * Reload the configuration, but only if initialization was
5101 * successful. Reloading the configuration after a failed init
5102 * may hang the system.
5103 */
5104 if (!err)
5105 b43_op_config(hw, ~0);
5106
5107 return err;
5108}
5109
5110static void b43_op_stop(struct ieee80211_hw *hw)
5111{
5112 struct b43_wl *wl = hw_to_b43_wl(hw);
5113 struct b43_wldev *dev = wl->current_dev;
5114
5115 cancel_work_sync(&(wl->beacon_update_trigger));
5116
5117 if (!dev)
5118 goto out;
5119
5120 mutex_lock(&wl->mutex);
5121 if (b43_status(dev) >= B43_STAT_STARTED) {
5122 dev = b43_wireless_core_stop(dev);
5123 if (!dev)
5124 goto out_unlock;
5125 }
5126 b43_wireless_core_exit(dev);
5127 wl->radio_enabled = false;
5128
5129out_unlock:
5130 mutex_unlock(&wl->mutex);
5131out:
5132 cancel_work_sync(&(wl->txpower_adjust_work));
5133}
5134
5135static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
5136 struct ieee80211_sta *sta, bool set)
5137{
5138 struct b43_wl *wl = hw_to_b43_wl(hw);
5139
5140 b43_update_templates(wl);
5141
5142 return 0;
5143}
5144
5145static void b43_op_sta_notify(struct ieee80211_hw *hw,
5146 struct ieee80211_vif *vif,
5147 enum sta_notify_cmd notify_cmd,
5148 struct ieee80211_sta *sta)
5149{
5150 struct b43_wl *wl = hw_to_b43_wl(hw);
5151
5152 B43_WARN_ON(!vif || wl->vif != vif);
5153}
5154
5155static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw,
5156 struct ieee80211_vif *vif,
5157 const u8 *mac_addr)
5158{
5159 struct b43_wl *wl = hw_to_b43_wl(hw);
5160 struct b43_wldev *dev;
5161
5162 mutex_lock(&wl->mutex);
5163 dev = wl->current_dev;
5164 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
5165 /* Disable CFP update during scan on other channels. */
5166 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
5167 }
5168 mutex_unlock(&wl->mutex);
5169}
5170
5171static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw,
5172 struct ieee80211_vif *vif)
5173{
5174 struct b43_wl *wl = hw_to_b43_wl(hw);
5175 struct b43_wldev *dev;
5176
5177 mutex_lock(&wl->mutex);
5178 dev = wl->current_dev;
5179 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
5180 /* Re-enable CFP update. */
5181 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
5182 }
5183 mutex_unlock(&wl->mutex);
5184}
5185
5186static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
5187 struct survey_info *survey)
5188{
5189 struct b43_wl *wl = hw_to_b43_wl(hw);
5190 struct b43_wldev *dev = wl->current_dev;
5191 struct ieee80211_conf *conf = &hw->conf;
5192
5193 if (idx != 0)
5194 return -ENOENT;
5195
5196 survey->channel = conf->chandef.chan;
5197 survey->filled = SURVEY_INFO_NOISE_DBM;
5198 survey->noise = dev->stats.link_noise;
5199
5200 return 0;
5201}
5202
5203static const struct ieee80211_ops b43_hw_ops = {
5204 .tx = b43_op_tx,
5205 .conf_tx = b43_op_conf_tx,
5206 .add_interface = b43_op_add_interface,
5207 .remove_interface = b43_op_remove_interface,
5208 .config = b43_op_config,
5209 .bss_info_changed = b43_op_bss_info_changed,
5210 .configure_filter = b43_op_configure_filter,
5211 .set_key = b43_op_set_key,
5212 .update_tkip_key = b43_op_update_tkip_key,
5213 .get_stats = b43_op_get_stats,
5214 .get_tsf = b43_op_get_tsf,
5215 .set_tsf = b43_op_set_tsf,
5216 .start = b43_op_start,
5217 .stop = b43_op_stop,
5218 .set_tim = b43_op_beacon_set_tim,
5219 .sta_notify = b43_op_sta_notify,
5220 .sw_scan_start = b43_op_sw_scan_start_notifier,
5221 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
5222 .get_survey = b43_op_get_survey,
5223 .rfkill_poll = b43_rfkill_poll,
5224};
5225
5226/* Hard-reset the chip. Do not call this directly.
5227 * Use b43_controller_restart()
5228 */
5229static void b43_chip_reset(struct work_struct *work)
5230{
5231 struct b43_wldev *dev =
5232 container_of(work, struct b43_wldev, restart_work);
5233 struct b43_wl *wl = dev->wl;
5234 int err = 0;
5235 int prev_status;
5236
5237 mutex_lock(&wl->mutex);
5238
5239 prev_status = b43_status(dev);
5240 /* Bring the device down... */
5241 if (prev_status >= B43_STAT_STARTED) {
5242 dev = b43_wireless_core_stop(dev);
5243 if (!dev) {
5244 err = -ENODEV;
5245 goto out;
5246 }
5247 }
5248 if (prev_status >= B43_STAT_INITIALIZED)
5249 b43_wireless_core_exit(dev);
5250
5251 /* ...and up again. */
5252 if (prev_status >= B43_STAT_INITIALIZED) {
5253 err = b43_wireless_core_init(dev);
5254 if (err)
5255 goto out;
5256 }
5257 if (prev_status >= B43_STAT_STARTED) {
5258 err = b43_wireless_core_start(dev);
5259 if (err) {
5260 b43_wireless_core_exit(dev);
5261 goto out;
5262 }
5263 }
5264out:
5265 if (err)
5266 wl->current_dev = NULL; /* Failed to init the dev. */
5267 mutex_unlock(&wl->mutex);
5268
5269 if (err) {
5270 b43err(wl, "Controller restart FAILED\n");
5271 return;
5272 }
5273
5274 /* reload configuration */
5275 b43_op_config(wl->hw, ~0);
5276 if (wl->vif)
5277 b43_op_bss_info_changed(wl->hw, wl->vif, &wl->vif->bss_conf, ~0);
5278
5279 b43info(wl, "Controller restarted\n");
5280}
5281
5282static int b43_setup_bands(struct b43_wldev *dev,
5283 bool have_2ghz_phy, bool have_5ghz_phy)
5284{
5285 struct ieee80211_hw *hw = dev->wl->hw;
5286 struct b43_phy *phy = &dev->phy;
5287 bool limited_2g;
5288 bool limited_5g;
5289
5290 /* We don't support all 2 GHz channels on some devices */
5291 limited_2g = phy->radio_ver == 0x2057 &&
5292 (phy->radio_rev == 9 || phy->radio_rev == 14);
5293 limited_5g = phy->radio_ver == 0x2057 &&
5294 phy->radio_rev == 9;
5295
5296 if (have_2ghz_phy)
5297 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = limited_2g ?
5298 &b43_band_2ghz_limited : &b43_band_2GHz;
5299 if (dev->phy.type == B43_PHYTYPE_N) {
5300 if (have_5ghz_phy)
5301 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = limited_5g ?
5302 &b43_band_5GHz_nphy_limited :
5303 &b43_band_5GHz_nphy;
5304 } else {
5305 if (have_5ghz_phy)
5306 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
5307 }
5308
5309 dev->phy.supports_2ghz = have_2ghz_phy;
5310 dev->phy.supports_5ghz = have_5ghz_phy;
5311
5312 return 0;
5313}
5314
5315static void b43_wireless_core_detach(struct b43_wldev *dev)
5316{
5317 /* We release firmware that late to not be required to re-request
5318 * is all the time when we reinit the core. */
5319 b43_release_firmware(dev);
5320 b43_phy_free(dev);
5321}
5322
5323static void b43_supported_bands(struct b43_wldev *dev, bool *have_2ghz_phy,
5324 bool *have_5ghz_phy)
5325{
5326 u16 dev_id = 0;
5327
5328#ifdef CONFIG_B43_BCMA
5329 if (dev->dev->bus_type == B43_BUS_BCMA &&
5330 dev->dev->bdev->bus->hosttype == BCMA_HOSTTYPE_PCI)
5331 dev_id = dev->dev->bdev->bus->host_pci->device;
5332#endif
5333#ifdef CONFIG_B43_SSB
5334 if (dev->dev->bus_type == B43_BUS_SSB &&
5335 dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI)
5336 dev_id = dev->dev->sdev->bus->host_pci->device;
5337#endif
5338 /* Override with SPROM value if available */
5339 if (dev->dev->bus_sprom->dev_id)
5340 dev_id = dev->dev->bus_sprom->dev_id;
5341
5342 /* Note: below IDs can be "virtual" (not maching e.g. real PCI ID) */
5343 switch (dev_id) {
5344 case 0x4324: /* BCM4306 */
5345 case 0x4312: /* BCM4311 */
5346 case 0x4319: /* BCM4318 */
5347 case 0x4328: /* BCM4321 */
5348 case 0x432b: /* BCM4322 */
5349 case 0x4350: /* BCM43222 */
5350 case 0x4353: /* BCM43224 */
5351 case 0x0576: /* BCM43224 */
5352 case 0x435f: /* BCM6362 */
5353 case 0x4331: /* BCM4331 */
5354 case 0x4359: /* BCM43228 */
5355 case 0x43a0: /* BCM4360 */
5356 case 0x43b1: /* BCM4352 */
5357 /* Dual band devices */
5358 *have_2ghz_phy = true;
5359 *have_5ghz_phy = true;
5360 return;
5361 case 0x4321: /* BCM4306 */
5362 /* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */
5363 if (dev->phy.type != B43_PHYTYPE_G)
5364 break;
5365 /* fall through */
5366 case 0x4313: /* BCM4311 */
5367 case 0x431a: /* BCM4318 */
5368 case 0x432a: /* BCM4321 */
5369 case 0x432d: /* BCM4322 */
5370 case 0x4352: /* BCM43222 */
5371 case 0x435a: /* BCM43228 */
5372 case 0x4333: /* BCM4331 */
5373 case 0x43a2: /* BCM4360 */
5374 case 0x43b3: /* BCM4352 */
5375 /* 5 GHz only devices */
5376 *have_2ghz_phy = false;
5377 *have_5ghz_phy = true;
5378 return;
5379 }
5380
5381 /* As a fallback, try to guess using PHY type */
5382 switch (dev->phy.type) {
5383 case B43_PHYTYPE_A:
5384 *have_2ghz_phy = false;
5385 *have_5ghz_phy = true;
5386 return;
5387 case B43_PHYTYPE_G:
5388 case B43_PHYTYPE_N:
5389 case B43_PHYTYPE_LP:
5390 case B43_PHYTYPE_HT:
5391 case B43_PHYTYPE_LCN:
5392 *have_2ghz_phy = true;
5393 *have_5ghz_phy = false;
5394 return;
5395 }
5396
5397 B43_WARN_ON(1);
5398}
5399
5400static int b43_wireless_core_attach(struct b43_wldev *dev)
5401{
5402 struct b43_wl *wl = dev->wl;
5403 struct b43_phy *phy = &dev->phy;
5404 int err;
5405 u32 tmp;
5406 bool have_2ghz_phy = false, have_5ghz_phy = false;
5407
5408 /* Do NOT do any device initialization here.
5409 * Do it in wireless_core_init() instead.
5410 * This function is for gathering basic information about the HW, only.
5411 * Also some structs may be set up here. But most likely you want to have
5412 * that in core_init(), too.
5413 */
5414
5415 err = b43_bus_powerup(dev, 0);
5416 if (err) {
5417 b43err(wl, "Bus powerup failed\n");
5418 goto out;
5419 }
5420
5421 phy->do_full_init = true;
5422
5423 /* Try to guess supported bands for the first init needs */
5424 switch (dev->dev->bus_type) {
5425#ifdef CONFIG_B43_BCMA
5426 case B43_BUS_BCMA:
5427 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST);
5428 have_2ghz_phy = !!(tmp & B43_BCMA_IOST_2G_PHY);
5429 have_5ghz_phy = !!(tmp & B43_BCMA_IOST_5G_PHY);
5430 break;
5431#endif
5432#ifdef CONFIG_B43_SSB
5433 case B43_BUS_SSB:
5434 if (dev->dev->core_rev >= 5) {
5435 tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
5436 have_2ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_2GHZ_PHY);
5437 have_5ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_5GHZ_PHY);
5438 } else
5439 B43_WARN_ON(1);
5440 break;
5441#endif
5442 }
5443
5444 dev->phy.gmode = have_2ghz_phy;
5445 b43_wireless_core_reset(dev, dev->phy.gmode);
5446
5447 /* Get the PHY type. */
5448 err = b43_phy_versioning(dev);
5449 if (err)
5450 goto err_powerdown;
5451
5452 /* Get real info about supported bands */
5453 b43_supported_bands(dev, &have_2ghz_phy, &have_5ghz_phy);
5454
5455 /* We don't support 5 GHz on some PHYs yet */
5456 if (have_5ghz_phy) {
5457 switch (dev->phy.type) {
5458 case B43_PHYTYPE_A:
5459 case B43_PHYTYPE_G:
5460 case B43_PHYTYPE_LP:
5461 case B43_PHYTYPE_HT:
5462 b43warn(wl, "5 GHz band is unsupported on this PHY\n");
5463 have_5ghz_phy = false;
5464 }
5465 }
5466
5467 if (!have_2ghz_phy && !have_5ghz_phy) {
5468 b43err(wl, "b43 can't support any band on this device\n");
5469 err = -EOPNOTSUPP;
5470 goto err_powerdown;
5471 }
5472
5473 err = b43_phy_allocate(dev);
5474 if (err)
5475 goto err_powerdown;
5476
5477 dev->phy.gmode = have_2ghz_phy;
5478 b43_wireless_core_reset(dev, dev->phy.gmode);
5479
5480 err = b43_validate_chipaccess(dev);
5481 if (err)
5482 goto err_phy_free;
5483 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
5484 if (err)
5485 goto err_phy_free;
5486
5487 /* Now set some default "current_dev" */
5488 if (!wl->current_dev)
5489 wl->current_dev = dev;
5490 INIT_WORK(&dev->restart_work, b43_chip_reset);
5491
5492 dev->phy.ops->switch_analog(dev, 0);
5493 b43_device_disable(dev, 0);
5494 b43_bus_may_powerdown(dev);
5495
5496out:
5497 return err;
5498
5499err_phy_free:
5500 b43_phy_free(dev);
5501err_powerdown:
5502 b43_bus_may_powerdown(dev);
5503 return err;
5504}
5505
5506static void b43_one_core_detach(struct b43_bus_dev *dev)
5507{
5508 struct b43_wldev *wldev;
5509 struct b43_wl *wl;
5510
5511 /* Do not cancel ieee80211-workqueue based work here.
5512 * See comment in b43_remove(). */
5513
5514 wldev = b43_bus_get_wldev(dev);
5515 wl = wldev->wl;
5516 b43_debugfs_remove_device(wldev);
5517 b43_wireless_core_detach(wldev);
5518 list_del(&wldev->list);
5519 b43_bus_set_wldev(dev, NULL);
5520 kfree(wldev);
5521}
5522
5523static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl)
5524{
5525 struct b43_wldev *wldev;
5526 int err = -ENOMEM;
5527
5528 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
5529 if (!wldev)
5530 goto out;
5531
5532 wldev->use_pio = b43_modparam_pio;
5533 wldev->dev = dev;
5534 wldev->wl = wl;
5535 b43_set_status(wldev, B43_STAT_UNINIT);
5536 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
5537 INIT_LIST_HEAD(&wldev->list);
5538
5539 err = b43_wireless_core_attach(wldev);
5540 if (err)
5541 goto err_kfree_wldev;
5542
5543 b43_bus_set_wldev(dev, wldev);
5544 b43_debugfs_add_device(wldev);
5545
5546 out:
5547 return err;
5548
5549 err_kfree_wldev:
5550 kfree(wldev);
5551 return err;
5552}
5553
5554#define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
5555 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
5556 (pdev->device == _device) && \
5557 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
5558 (pdev->subsystem_device == _subdevice) )
5559
5560#ifdef CONFIG_B43_SSB
5561static void b43_sprom_fixup(struct ssb_bus *bus)
5562{
5563 struct pci_dev *pdev;
5564
5565 /* boardflags workarounds */
5566 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
5567 bus->chip_id == 0x4301 && bus->sprom.board_rev == 0x74)
5568 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
5569 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
5570 bus->boardinfo.type == 0x4E && bus->sprom.board_rev > 0x40)
5571 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
5572 if (bus->bustype == SSB_BUSTYPE_PCI) {
5573 pdev = bus->host_pci;
5574 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
5575 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
5576 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
5577 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
5578 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
5579 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
5580 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
5581 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
5582 }
5583}
5584
5585static void b43_wireless_exit(struct b43_bus_dev *dev, struct b43_wl *wl)
5586{
5587 struct ieee80211_hw *hw = wl->hw;
5588
5589 ssb_set_devtypedata(dev->sdev, NULL);
5590 ieee80211_free_hw(hw);
5591}
5592#endif
5593
5594static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev)
5595{
5596 struct ssb_sprom *sprom = dev->bus_sprom;
5597 struct ieee80211_hw *hw;
5598 struct b43_wl *wl;
5599 char chip_name[6];
5600 int queue_num;
5601
5602 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
5603 if (!hw) {
5604 b43err(NULL, "Could not allocate ieee80211 device\n");
5605 return ERR_PTR(-ENOMEM);
5606 }
5607 wl = hw_to_b43_wl(hw);
5608
5609 /* fill hw info */
5610 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
5611 ieee80211_hw_set(hw, SIGNAL_DBM);
5612
5613 hw->wiphy->interface_modes =
5614 BIT(NL80211_IFTYPE_AP) |
5615 BIT(NL80211_IFTYPE_MESH_POINT) |
5616 BIT(NL80211_IFTYPE_STATION) |
5617 BIT(NL80211_IFTYPE_WDS) |
5618 BIT(NL80211_IFTYPE_ADHOC);
5619
5620 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
5621
5622 wl->hw_registred = false;
5623 hw->max_rates = 2;
5624 SET_IEEE80211_DEV(hw, dev->dev);
5625 if (is_valid_ether_addr(sprom->et1mac))
5626 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
5627 else
5628 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
5629
5630 /* Initialize struct b43_wl */
5631 wl->hw = hw;
5632 mutex_init(&wl->mutex);
5633 spin_lock_init(&wl->hardirq_lock);
5634 spin_lock_init(&wl->beacon_lock);
5635 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
5636 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
5637 INIT_WORK(&wl->tx_work, b43_tx_work);
5638
5639 /* Initialize queues and flags. */
5640 for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
5641 skb_queue_head_init(&wl->tx_queue[queue_num]);
5642 wl->tx_queue_stopped[queue_num] = 0;
5643 }
5644
5645 snprintf(chip_name, ARRAY_SIZE(chip_name),
5646 (dev->chip_id > 0x9999) ? "%d" : "%04X", dev->chip_id);
5647 b43info(wl, "Broadcom %s WLAN found (core revision %u)\n", chip_name,
5648 dev->core_rev);
5649 return wl;
5650}
5651
5652#ifdef CONFIG_B43_BCMA
5653static int b43_bcma_probe(struct bcma_device *core)
5654{
5655 struct b43_bus_dev *dev;
5656 struct b43_wl *wl;
5657 int err;
5658
5659 if (!modparam_allhwsupport &&
5660 (core->id.rev == 0x17 || core->id.rev == 0x18)) {
5661 pr_err("Support for cores revisions 0x17 and 0x18 disabled by module param allhwsupport=0. Try b43.allhwsupport=1\n");
5662 return -ENOTSUPP;
5663 }
5664
5665 dev = b43_bus_dev_bcma_init(core);
5666 if (!dev)
5667 return -ENODEV;
5668
5669 wl = b43_wireless_init(dev);
5670 if (IS_ERR(wl)) {
5671 err = PTR_ERR(wl);
5672 goto bcma_out;
5673 }
5674
5675 err = b43_one_core_attach(dev, wl);
5676 if (err)
5677 goto bcma_err_wireless_exit;
5678
5679 /* setup and start work to load firmware */
5680 INIT_WORK(&wl->firmware_load, b43_request_firmware);
5681 schedule_work(&wl->firmware_load);
5682
5683 return err;
5684
5685bcma_err_wireless_exit:
5686 ieee80211_free_hw(wl->hw);
5687bcma_out:
5688 kfree(dev);
5689 return err;
5690}
5691
5692static void b43_bcma_remove(struct bcma_device *core)
5693{
5694 struct b43_wldev *wldev = bcma_get_drvdata(core);
5695 struct b43_wl *wl = wldev->wl;
5696
5697 /* We must cancel any work here before unregistering from ieee80211,
5698 * as the ieee80211 unreg will destroy the workqueue. */
5699 cancel_work_sync(&wldev->restart_work);
5700 cancel_work_sync(&wl->firmware_load);
5701
5702 B43_WARN_ON(!wl);
5703 if (!wldev->fw.ucode.data)
5704 return; /* NULL if firmware never loaded */
5705 if (wl->current_dev == wldev && wl->hw_registred) {
5706 b43_leds_stop(wldev);
5707 ieee80211_unregister_hw(wl->hw);
5708 }
5709
5710 b43_one_core_detach(wldev->dev);
5711
5712 /* Unregister HW RNG driver */
5713 b43_rng_exit(wl);
5714
5715 b43_leds_unregister(wl);
5716 ieee80211_free_hw(wl->hw);
5717 kfree(wldev->dev);
5718}
5719
5720static struct bcma_driver b43_bcma_driver = {
5721 .name = KBUILD_MODNAME,
5722 .id_table = b43_bcma_tbl,
5723 .probe = b43_bcma_probe,
5724 .remove = b43_bcma_remove,
5725};
5726#endif
5727
5728#ifdef CONFIG_B43_SSB
5729static
5730int b43_ssb_probe(struct ssb_device *sdev, const struct ssb_device_id *id)
5731{
5732 struct b43_bus_dev *dev;
5733 struct b43_wl *wl;
5734 int err;
5735
5736 dev = b43_bus_dev_ssb_init(sdev);
5737 if (!dev)
5738 return -ENOMEM;
5739
5740 wl = ssb_get_devtypedata(sdev);
5741 if (wl) {
5742 b43err(NULL, "Dual-core devices are not supported\n");
5743 err = -ENOTSUPP;
5744 goto err_ssb_kfree_dev;
5745 }
5746
5747 b43_sprom_fixup(sdev->bus);
5748
5749 wl = b43_wireless_init(dev);
5750 if (IS_ERR(wl)) {
5751 err = PTR_ERR(wl);
5752 goto err_ssb_kfree_dev;
5753 }
5754 ssb_set_devtypedata(sdev, wl);
5755 B43_WARN_ON(ssb_get_devtypedata(sdev) != wl);
5756
5757 err = b43_one_core_attach(dev, wl);
5758 if (err)
5759 goto err_ssb_wireless_exit;
5760
5761 /* setup and start work to load firmware */
5762 INIT_WORK(&wl->firmware_load, b43_request_firmware);
5763 schedule_work(&wl->firmware_load);
5764
5765 return err;
5766
5767err_ssb_wireless_exit:
5768 b43_wireless_exit(dev, wl);
5769err_ssb_kfree_dev:
5770 kfree(dev);
5771 return err;
5772}
5773
5774static void b43_ssb_remove(struct ssb_device *sdev)
5775{
5776 struct b43_wl *wl = ssb_get_devtypedata(sdev);
5777 struct b43_wldev *wldev = ssb_get_drvdata(sdev);
5778 struct b43_bus_dev *dev = wldev->dev;
5779
5780 /* We must cancel any work here before unregistering from ieee80211,
5781 * as the ieee80211 unreg will destroy the workqueue. */
5782 cancel_work_sync(&wldev->restart_work);
5783 cancel_work_sync(&wl->firmware_load);
5784
5785 B43_WARN_ON(!wl);
5786 if (!wldev->fw.ucode.data)
5787 return; /* NULL if firmware never loaded */
5788 if (wl->current_dev == wldev && wl->hw_registred) {
5789 b43_leds_stop(wldev);
5790 ieee80211_unregister_hw(wl->hw);
5791 }
5792
5793 b43_one_core_detach(dev);
5794
5795 /* Unregister HW RNG driver */
5796 b43_rng_exit(wl);
5797
5798 b43_leds_unregister(wl);
5799 b43_wireless_exit(dev, wl);
5800 kfree(dev);
5801}
5802
5803static struct ssb_driver b43_ssb_driver = {
5804 .name = KBUILD_MODNAME,
5805 .id_table = b43_ssb_tbl,
5806 .probe = b43_ssb_probe,
5807 .remove = b43_ssb_remove,
5808};
5809#endif /* CONFIG_B43_SSB */
5810
5811/* Perform a hardware reset. This can be called from any context. */
5812void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5813{
5814 /* Must avoid requeueing, if we are in shutdown. */
5815 if (b43_status(dev) < B43_STAT_INITIALIZED)
5816 return;
5817 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5818 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5819}
5820
5821static void b43_print_driverinfo(void)
5822{
5823 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5824 *feat_leds = "", *feat_sdio = "";
5825
5826#ifdef CONFIG_B43_PCI_AUTOSELECT
5827 feat_pci = "P";
5828#endif
5829#ifdef CONFIG_B43_PCMCIA
5830 feat_pcmcia = "M";
5831#endif
5832#ifdef CONFIG_B43_PHY_N
5833 feat_nphy = "N";
5834#endif
5835#ifdef CONFIG_B43_LEDS
5836 feat_leds = "L";
5837#endif
5838#ifdef CONFIG_B43_SDIO
5839 feat_sdio = "S";
5840#endif
5841 printk(KERN_INFO "Broadcom 43xx driver loaded "
5842 "[ Features: %s%s%s%s%s ]\n",
5843 feat_pci, feat_pcmcia, feat_nphy,
5844 feat_leds, feat_sdio);
5845}
5846
5847static int __init b43_init(void)
5848{
5849 int err;
5850
5851 b43_debugfs_init();
5852 err = b43_sdio_init();
5853 if (err)
5854 goto err_dfs_exit;
5855#ifdef CONFIG_B43_BCMA
5856 err = bcma_driver_register(&b43_bcma_driver);
5857 if (err)
5858 goto err_sdio_exit;
5859#endif
5860#ifdef CONFIG_B43_SSB
5861 err = ssb_driver_register(&b43_ssb_driver);
5862 if (err)
5863 goto err_bcma_driver_exit;
5864#endif
5865 b43_print_driverinfo();
5866
5867 return err;
5868
5869#ifdef CONFIG_B43_SSB
5870err_bcma_driver_exit:
5871#endif
5872#ifdef CONFIG_B43_BCMA
5873 bcma_driver_unregister(&b43_bcma_driver);
5874err_sdio_exit:
5875#endif
5876 b43_sdio_exit();
5877err_dfs_exit:
5878 b43_debugfs_exit();
5879 return err;
5880}
5881
5882static void __exit b43_exit(void)
5883{
5884#ifdef CONFIG_B43_SSB
5885 ssb_driver_unregister(&b43_ssb_driver);
5886#endif
5887#ifdef CONFIG_B43_BCMA
5888 bcma_driver_unregister(&b43_bcma_driver);
5889#endif
5890 b43_sdio_exit();
5891 b43_debugfs_exit();
5892}
5893
5894module_init(b43_init)
5895module_exit(b43_exit)