1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005-2009 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 SDIO support
12 Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
13
14 Some parts of the code in this file are derived from the ipw2200
15 driver Copyright(c) 2003 - 2004 Intel Corporation.
16
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License, or
20 (at your option) any later version.
21
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
26
27 You should have received a copy of the GNU General Public License
28 along with this program; see the file COPYING. If not, write to
29 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
30 Boston, MA 02110-1301, USA.
31
32 */
33
34 #include <linux/delay.h>
35 #include <linux/init.h>
36 #include <linux/moduleparam.h>
37 #include <linux/if_arp.h>
38 #include <linux/etherdevice.h>
39 #include <linux/firmware.h>
40 #include <linux/wireless.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 "pcmcia.h"
60 #include "sdio.h"
61 #include <linux/mmc/sdio_func.h>
62
63 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
64 MODULE_AUTHOR("Martin Langer");
65 MODULE_AUTHOR("Stefano Brivio");
66 MODULE_AUTHOR("Michael Buesch");
67 MODULE_AUTHOR("Gábor Stefanik");
68 MODULE_LICENSE("GPL");
69
70 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
71 MODULE_FIRMWARE("b43/ucode11.fw");
72 MODULE_FIRMWARE("b43/ucode13.fw");
73 MODULE_FIRMWARE("b43/ucode14.fw");
74 MODULE_FIRMWARE("b43/ucode15.fw");
75 MODULE_FIRMWARE("b43/ucode16_mimo.fw");
76 MODULE_FIRMWARE("b43/ucode5.fw");
77 MODULE_FIRMWARE("b43/ucode9.fw");
78
79 static int modparam_bad_frames_preempt;
80 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
81 MODULE_PARM_DESC(bad_frames_preempt,
82 "enable(1) / disable(0) Bad Frames Preemption");
83
84 static char modparam_fwpostfix[16];
85 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
86 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
87
88 static int modparam_hwpctl;
89 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
90 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
91
92 static int modparam_nohwcrypt;
93 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
94 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
95
96 static int modparam_hwtkip;
97 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
98 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
99
100 static int modparam_qos = 1;
101 module_param_named(qos, modparam_qos, int, 0444);
102 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
103
104 static int modparam_btcoex = 1;
105 module_param_named(btcoex, modparam_btcoex, int, 0444);
106 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
107
108 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
109 module_param_named(verbose, b43_modparam_verbose, int, 0644);
110 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
111
112 static int b43_modparam_pio = B43_PIO_DEFAULT;
113 module_param_named(pio, b43_modparam_pio, int, 0644);
114 MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
115
116 static const struct ssb_device_id b43_ssb_tbl[] = {
117 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
118 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
119 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
120 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
121 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
122 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
123 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
124 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
125 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
126 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
127 SSB_DEVTABLE_END
128 };
129
130 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
131
132 /* Channel and ratetables are shared for all devices.
133 * They can't be const, because ieee80211 puts some precalculated
134 * data in there. This data is the same for all devices, so we don't
135 * get concurrency issues */
136 #define RATETAB_ENT(_rateid, _flags) \
137 { \
138 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
139 .hw_value = (_rateid), \
140 .flags = (_flags), \
141 }
142
143 /*
144 * NOTE: When changing this, sync with xmit.c's
145 * b43_plcp_get_bitrate_idx_* functions!
146 */
147 static struct ieee80211_rate __b43_ratetable[] = {
148 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
149 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
150 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
151 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
152 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
153 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
154 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
155 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
156 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
157 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
158 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
159 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
160 };
161
162 #define b43_a_ratetable (__b43_ratetable + 4)
163 #define b43_a_ratetable_size 8
164 #define b43_b_ratetable (__b43_ratetable + 0)
165 #define b43_b_ratetable_size 4
166 #define b43_g_ratetable (__b43_ratetable + 0)
167 #define b43_g_ratetable_size 12
168
169 #define CHAN4G(_channel, _freq, _flags) { \
170 .band = IEEE80211_BAND_2GHZ, \
171 .center_freq = (_freq), \
172 .hw_value = (_channel), \
173 .flags = (_flags), \
174 .max_antenna_gain = 0, \
175 .max_power = 30, \
176 }
177 static struct ieee80211_channel b43_2ghz_chantable[] = {
178 CHAN4G(1, 2412, 0),
179 CHAN4G(2, 2417, 0),
180 CHAN4G(3, 2422, 0),
181 CHAN4G(4, 2427, 0),
182 CHAN4G(5, 2432, 0),
183 CHAN4G(6, 2437, 0),
184 CHAN4G(7, 2442, 0),
185 CHAN4G(8, 2447, 0),
186 CHAN4G(9, 2452, 0),
187 CHAN4G(10, 2457, 0),
188 CHAN4G(11, 2462, 0),
189 CHAN4G(12, 2467, 0),
190 CHAN4G(13, 2472, 0),
191 CHAN4G(14, 2484, 0),
192 };
193 #undef CHAN4G
194
195 #define CHAN5G(_channel, _flags) { \
196 .band = IEEE80211_BAND_5GHZ, \
197 .center_freq = 5000 + (5 * (_channel)), \
198 .hw_value = (_channel), \
199 .flags = (_flags), \
200 .max_antenna_gain = 0, \
201 .max_power = 30, \
202 }
203 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
204 CHAN5G(32, 0), CHAN5G(34, 0),
205 CHAN5G(36, 0), CHAN5G(38, 0),
206 CHAN5G(40, 0), CHAN5G(42, 0),
207 CHAN5G(44, 0), CHAN5G(46, 0),
208 CHAN5G(48, 0), CHAN5G(50, 0),
209 CHAN5G(52, 0), CHAN5G(54, 0),
210 CHAN5G(56, 0), CHAN5G(58, 0),
211 CHAN5G(60, 0), CHAN5G(62, 0),
212 CHAN5G(64, 0), CHAN5G(66, 0),
213 CHAN5G(68, 0), CHAN5G(70, 0),
214 CHAN5G(72, 0), CHAN5G(74, 0),
215 CHAN5G(76, 0), CHAN5G(78, 0),
216 CHAN5G(80, 0), CHAN5G(82, 0),
217 CHAN5G(84, 0), CHAN5G(86, 0),
218 CHAN5G(88, 0), CHAN5G(90, 0),
219 CHAN5G(92, 0), CHAN5G(94, 0),
220 CHAN5G(96, 0), CHAN5G(98, 0),
221 CHAN5G(100, 0), CHAN5G(102, 0),
222 CHAN5G(104, 0), CHAN5G(106, 0),
223 CHAN5G(108, 0), CHAN5G(110, 0),
224 CHAN5G(112, 0), CHAN5G(114, 0),
225 CHAN5G(116, 0), CHAN5G(118, 0),
226 CHAN5G(120, 0), CHAN5G(122, 0),
227 CHAN5G(124, 0), CHAN5G(126, 0),
228 CHAN5G(128, 0), CHAN5G(130, 0),
229 CHAN5G(132, 0), CHAN5G(134, 0),
230 CHAN5G(136, 0), CHAN5G(138, 0),
231 CHAN5G(140, 0), CHAN5G(142, 0),
232 CHAN5G(144, 0), CHAN5G(145, 0),
233 CHAN5G(146, 0), CHAN5G(147, 0),
234 CHAN5G(148, 0), CHAN5G(149, 0),
235 CHAN5G(150, 0), CHAN5G(151, 0),
236 CHAN5G(152, 0), CHAN5G(153, 0),
237 CHAN5G(154, 0), CHAN5G(155, 0),
238 CHAN5G(156, 0), CHAN5G(157, 0),
239 CHAN5G(158, 0), CHAN5G(159, 0),
240 CHAN5G(160, 0), CHAN5G(161, 0),
241 CHAN5G(162, 0), CHAN5G(163, 0),
242 CHAN5G(164, 0), CHAN5G(165, 0),
243 CHAN5G(166, 0), CHAN5G(168, 0),
244 CHAN5G(170, 0), CHAN5G(172, 0),
245 CHAN5G(174, 0), CHAN5G(176, 0),
246 CHAN5G(178, 0), CHAN5G(180, 0),
247 CHAN5G(182, 0), CHAN5G(184, 0),
248 CHAN5G(186, 0), CHAN5G(188, 0),
249 CHAN5G(190, 0), CHAN5G(192, 0),
250 CHAN5G(194, 0), CHAN5G(196, 0),
251 CHAN5G(198, 0), CHAN5G(200, 0),
252 CHAN5G(202, 0), CHAN5G(204, 0),
253 CHAN5G(206, 0), CHAN5G(208, 0),
254 CHAN5G(210, 0), CHAN5G(212, 0),
255 CHAN5G(214, 0), CHAN5G(216, 0),
256 CHAN5G(218, 0), CHAN5G(220, 0),
257 CHAN5G(222, 0), CHAN5G(224, 0),
258 CHAN5G(226, 0), CHAN5G(228, 0),
259 };
260
261 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
262 CHAN5G(34, 0), CHAN5G(36, 0),
263 CHAN5G(38, 0), CHAN5G(40, 0),
264 CHAN5G(42, 0), CHAN5G(44, 0),
265 CHAN5G(46, 0), CHAN5G(48, 0),
266 CHAN5G(52, 0), CHAN5G(56, 0),
267 CHAN5G(60, 0), CHAN5G(64, 0),
268 CHAN5G(100, 0), CHAN5G(104, 0),
269 CHAN5G(108, 0), CHAN5G(112, 0),
270 CHAN5G(116, 0), CHAN5G(120, 0),
271 CHAN5G(124, 0), CHAN5G(128, 0),
272 CHAN5G(132, 0), CHAN5G(136, 0),
273 CHAN5G(140, 0), CHAN5G(149, 0),
274 CHAN5G(153, 0), CHAN5G(157, 0),
275 CHAN5G(161, 0), CHAN5G(165, 0),
276 CHAN5G(184, 0), CHAN5G(188, 0),
277 CHAN5G(192, 0), CHAN5G(196, 0),
278 CHAN5G(200, 0), CHAN5G(204, 0),
279 CHAN5G(208, 0), CHAN5G(212, 0),
280 CHAN5G(216, 0),
281 };
282 #undef CHAN5G
283
284 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
285 .band = IEEE80211_BAND_5GHZ,
286 .channels = b43_5ghz_nphy_chantable,
287 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
288 .bitrates = b43_a_ratetable,
289 .n_bitrates = b43_a_ratetable_size,
290 };
291
292 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
293 .band = IEEE80211_BAND_5GHZ,
294 .channels = b43_5ghz_aphy_chantable,
295 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
296 .bitrates = b43_a_ratetable,
297 .n_bitrates = b43_a_ratetable_size,
298 };
299
300 static struct ieee80211_supported_band b43_band_2GHz = {
301 .band = IEEE80211_BAND_2GHZ,
302 .channels = b43_2ghz_chantable,
303 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
304 .bitrates = b43_g_ratetable,
305 .n_bitrates = b43_g_ratetable_size,
306 };
307
308 static void b43_wireless_core_exit(struct b43_wldev *dev);
309 static int b43_wireless_core_init(struct b43_wldev *dev);
310 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
311 static int b43_wireless_core_start(struct b43_wldev *dev);
312
b43_ratelimit(struct b43_wl * wl)313 static int b43_ratelimit(struct b43_wl *wl)
314 {
315 if (!wl || !wl->current_dev)
316 return 1;
317 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
318 return 1;
319 /* We are up and running.
320 * Ratelimit the messages to avoid DoS over the net. */
321 return net_ratelimit();
322 }
323
b43info(struct b43_wl * wl,const char * fmt,...)324 void b43info(struct b43_wl *wl, const char *fmt, ...)
325 {
326 struct va_format vaf;
327 va_list args;
328
329 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
330 return;
331 if (!b43_ratelimit(wl))
332 return;
333
334 va_start(args, fmt);
335
336 vaf.fmt = fmt;
337 vaf.va = &args;
338
339 printk(KERN_INFO "b43-%s: %pV",
340 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
341
342 va_end(args);
343 }
344
b43err(struct b43_wl * wl,const char * fmt,...)345 void b43err(struct b43_wl *wl, const char *fmt, ...)
346 {
347 struct va_format vaf;
348 va_list args;
349
350 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
351 return;
352 if (!b43_ratelimit(wl))
353 return;
354
355 va_start(args, fmt);
356
357 vaf.fmt = fmt;
358 vaf.va = &args;
359
360 printk(KERN_ERR "b43-%s ERROR: %pV",
361 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
362
363 va_end(args);
364 }
365
b43warn(struct b43_wl * wl,const char * fmt,...)366 void b43warn(struct b43_wl *wl, const char *fmt, ...)
367 {
368 struct va_format vaf;
369 va_list args;
370
371 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
372 return;
373 if (!b43_ratelimit(wl))
374 return;
375
376 va_start(args, fmt);
377
378 vaf.fmt = fmt;
379 vaf.va = &args;
380
381 printk(KERN_WARNING "b43-%s warning: %pV",
382 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
383
384 va_end(args);
385 }
386
b43dbg(struct b43_wl * wl,const char * fmt,...)387 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
388 {
389 struct va_format vaf;
390 va_list args;
391
392 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
393 return;
394
395 va_start(args, fmt);
396
397 vaf.fmt = fmt;
398 vaf.va = &args;
399
400 printk(KERN_DEBUG "b43-%s debug: %pV",
401 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
402
403 va_end(args);
404 }
405
b43_ram_write(struct b43_wldev * dev,u16 offset,u32 val)406 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
407 {
408 u32 macctl;
409
410 B43_WARN_ON(offset % 4 != 0);
411
412 macctl = b43_read32(dev, B43_MMIO_MACCTL);
413 if (macctl & B43_MACCTL_BE)
414 val = swab32(val);
415
416 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
417 mmiowb();
418 b43_write32(dev, B43_MMIO_RAM_DATA, val);
419 }
420
b43_shm_control_word(struct b43_wldev * dev,u16 routing,u16 offset)421 static inline void b43_shm_control_word(struct b43_wldev *dev,
422 u16 routing, u16 offset)
423 {
424 u32 control;
425
426 /* "offset" is the WORD offset. */
427 control = routing;
428 control <<= 16;
429 control |= offset;
430 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
431 }
432
b43_shm_read32(struct b43_wldev * dev,u16 routing,u16 offset)433 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
434 {
435 u32 ret;
436
437 if (routing == B43_SHM_SHARED) {
438 B43_WARN_ON(offset & 0x0001);
439 if (offset & 0x0003) {
440 /* Unaligned access */
441 b43_shm_control_word(dev, routing, offset >> 2);
442 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
443 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
444 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
445
446 goto out;
447 }
448 offset >>= 2;
449 }
450 b43_shm_control_word(dev, routing, offset);
451 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
452 out:
453 return ret;
454 }
455
b43_shm_read16(struct b43_wldev * dev,u16 routing,u16 offset)456 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
457 {
458 u16 ret;
459
460 if (routing == B43_SHM_SHARED) {
461 B43_WARN_ON(offset & 0x0001);
462 if (offset & 0x0003) {
463 /* Unaligned access */
464 b43_shm_control_word(dev, routing, offset >> 2);
465 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
466
467 goto out;
468 }
469 offset >>= 2;
470 }
471 b43_shm_control_word(dev, routing, offset);
472 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
473 out:
474 return ret;
475 }
476
b43_shm_write32(struct b43_wldev * dev,u16 routing,u16 offset,u32 value)477 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
478 {
479 if (routing == B43_SHM_SHARED) {
480 B43_WARN_ON(offset & 0x0001);
481 if (offset & 0x0003) {
482 /* Unaligned access */
483 b43_shm_control_word(dev, routing, offset >> 2);
484 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
485 value & 0xFFFF);
486 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
487 b43_write16(dev, B43_MMIO_SHM_DATA,
488 (value >> 16) & 0xFFFF);
489 return;
490 }
491 offset >>= 2;
492 }
493 b43_shm_control_word(dev, routing, offset);
494 b43_write32(dev, B43_MMIO_SHM_DATA, value);
495 }
496
b43_shm_write16(struct b43_wldev * dev,u16 routing,u16 offset,u16 value)497 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
498 {
499 if (routing == B43_SHM_SHARED) {
500 B43_WARN_ON(offset & 0x0001);
501 if (offset & 0x0003) {
502 /* Unaligned access */
503 b43_shm_control_word(dev, routing, offset >> 2);
504 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
505 return;
506 }
507 offset >>= 2;
508 }
509 b43_shm_control_word(dev, routing, offset);
510 b43_write16(dev, B43_MMIO_SHM_DATA, value);
511 }
512
513 /* Read HostFlags */
b43_hf_read(struct b43_wldev * dev)514 u64 b43_hf_read(struct b43_wldev *dev)
515 {
516 u64 ret;
517
518 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
519 ret <<= 16;
520 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
521 ret <<= 16;
522 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
523
524 return ret;
525 }
526
527 /* Write HostFlags */
b43_hf_write(struct b43_wldev * dev,u64 value)528 void b43_hf_write(struct b43_wldev *dev, u64 value)
529 {
530 u16 lo, mi, hi;
531
532 lo = (value & 0x00000000FFFFULL);
533 mi = (value & 0x0000FFFF0000ULL) >> 16;
534 hi = (value & 0xFFFF00000000ULL) >> 32;
535 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
536 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
537 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
538 }
539
540 /* Read the firmware capabilities bitmask (Opensource firmware only) */
b43_fwcapa_read(struct b43_wldev * dev)541 static u16 b43_fwcapa_read(struct b43_wldev *dev)
542 {
543 B43_WARN_ON(!dev->fw.opensource);
544 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
545 }
546
b43_tsf_read(struct b43_wldev * dev,u64 * tsf)547 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
548 {
549 u32 low, high;
550
551 B43_WARN_ON(dev->dev->id.revision < 3);
552
553 /* The hardware guarantees us an atomic read, if we
554 * read the low register first. */
555 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
556 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
557
558 *tsf = high;
559 *tsf <<= 32;
560 *tsf |= low;
561 }
562
b43_time_lock(struct b43_wldev * dev)563 static void b43_time_lock(struct b43_wldev *dev)
564 {
565 u32 macctl;
566
567 macctl = b43_read32(dev, B43_MMIO_MACCTL);
568 macctl |= B43_MACCTL_TBTTHOLD;
569 b43_write32(dev, B43_MMIO_MACCTL, macctl);
570 /* Commit the write */
571 b43_read32(dev, B43_MMIO_MACCTL);
572 }
573
b43_time_unlock(struct b43_wldev * dev)574 static void b43_time_unlock(struct b43_wldev *dev)
575 {
576 u32 macctl;
577
578 macctl = b43_read32(dev, B43_MMIO_MACCTL);
579 macctl &= ~B43_MACCTL_TBTTHOLD;
580 b43_write32(dev, B43_MMIO_MACCTL, macctl);
581 /* Commit the write */
582 b43_read32(dev, B43_MMIO_MACCTL);
583 }
584
b43_tsf_write_locked(struct b43_wldev * dev,u64 tsf)585 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
586 {
587 u32 low, high;
588
589 B43_WARN_ON(dev->dev->id.revision < 3);
590
591 low = tsf;
592 high = (tsf >> 32);
593 /* The hardware guarantees us an atomic write, if we
594 * write the low register first. */
595 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
596 mmiowb();
597 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
598 mmiowb();
599 }
600
b43_tsf_write(struct b43_wldev * dev,u64 tsf)601 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
602 {
603 b43_time_lock(dev);
604 b43_tsf_write_locked(dev, tsf);
605 b43_time_unlock(dev);
606 }
607
608 static
b43_macfilter_set(struct b43_wldev * dev,u16 offset,const u8 * mac)609 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
610 {
611 static const u8 zero_addr[ETH_ALEN] = { 0 };
612 u16 data;
613
614 if (!mac)
615 mac = zero_addr;
616
617 offset |= 0x0020;
618 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
619
620 data = mac[0];
621 data |= mac[1] << 8;
622 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
623 data = mac[2];
624 data |= mac[3] << 8;
625 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
626 data = mac[4];
627 data |= mac[5] << 8;
628 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
629 }
630
b43_write_mac_bssid_templates(struct b43_wldev * dev)631 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
632 {
633 const u8 *mac;
634 const u8 *bssid;
635 u8 mac_bssid[ETH_ALEN * 2];
636 int i;
637 u32 tmp;
638
639 bssid = dev->wl->bssid;
640 mac = dev->wl->mac_addr;
641
642 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
643
644 memcpy(mac_bssid, mac, ETH_ALEN);
645 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
646
647 /* Write our MAC address and BSSID to template ram */
648 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
649 tmp = (u32) (mac_bssid[i + 0]);
650 tmp |= (u32) (mac_bssid[i + 1]) << 8;
651 tmp |= (u32) (mac_bssid[i + 2]) << 16;
652 tmp |= (u32) (mac_bssid[i + 3]) << 24;
653 b43_ram_write(dev, 0x20 + i, tmp);
654 }
655 }
656
b43_upload_card_macaddress(struct b43_wldev * dev)657 static void b43_upload_card_macaddress(struct b43_wldev *dev)
658 {
659 b43_write_mac_bssid_templates(dev);
660 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
661 }
662
b43_set_slot_time(struct b43_wldev * dev,u16 slot_time)663 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
664 {
665 /* slot_time is in usec. */
666 /* This test used to exit for all but a G PHY. */
667 if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
668 return;
669 b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
670 /* Shared memory location 0x0010 is the slot time and should be
671 * set to slot_time; however, this register is initially 0 and changing
672 * the value adversely affects the transmit rate for BCM4311
673 * devices. Until this behavior is unterstood, delete this step
674 *
675 * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
676 */
677 }
678
b43_short_slot_timing_enable(struct b43_wldev * dev)679 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
680 {
681 b43_set_slot_time(dev, 9);
682 }
683
b43_short_slot_timing_disable(struct b43_wldev * dev)684 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
685 {
686 b43_set_slot_time(dev, 20);
687 }
688
689 /* DummyTransmission function, as documented on
690 * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
691 */
b43_dummy_transmission(struct b43_wldev * dev,bool ofdm,bool pa_on)692 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
693 {
694 struct b43_phy *phy = &dev->phy;
695 unsigned int i, max_loop;
696 u16 value;
697 u32 buffer[5] = {
698 0x00000000,
699 0x00D40000,
700 0x00000000,
701 0x01000000,
702 0x00000000,
703 };
704
705 if (ofdm) {
706 max_loop = 0x1E;
707 buffer[0] = 0x000201CC;
708 } else {
709 max_loop = 0xFA;
710 buffer[0] = 0x000B846E;
711 }
712
713 for (i = 0; i < 5; i++)
714 b43_ram_write(dev, i * 4, buffer[i]);
715
716 b43_write16(dev, 0x0568, 0x0000);
717 if (dev->dev->id.revision < 11)
718 b43_write16(dev, 0x07C0, 0x0000);
719 else
720 b43_write16(dev, 0x07C0, 0x0100);
721 value = (ofdm ? 0x41 : 0x40);
722 b43_write16(dev, 0x050C, value);
723 if ((phy->type == B43_PHYTYPE_N) || (phy->type == B43_PHYTYPE_LP))
724 b43_write16(dev, 0x0514, 0x1A02);
725 b43_write16(dev, 0x0508, 0x0000);
726 b43_write16(dev, 0x050A, 0x0000);
727 b43_write16(dev, 0x054C, 0x0000);
728 b43_write16(dev, 0x056A, 0x0014);
729 b43_write16(dev, 0x0568, 0x0826);
730 b43_write16(dev, 0x0500, 0x0000);
731 if (!pa_on && (phy->type == B43_PHYTYPE_N)) {
732 //SPEC TODO
733 }
734
735 switch (phy->type) {
736 case B43_PHYTYPE_N:
737 b43_write16(dev, 0x0502, 0x00D0);
738 break;
739 case B43_PHYTYPE_LP:
740 b43_write16(dev, 0x0502, 0x0050);
741 break;
742 default:
743 b43_write16(dev, 0x0502, 0x0030);
744 }
745
746 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
747 b43_radio_write16(dev, 0x0051, 0x0017);
748 for (i = 0x00; i < max_loop; i++) {
749 value = b43_read16(dev, 0x050E);
750 if (value & 0x0080)
751 break;
752 udelay(10);
753 }
754 for (i = 0x00; i < 0x0A; i++) {
755 value = b43_read16(dev, 0x050E);
756 if (value & 0x0400)
757 break;
758 udelay(10);
759 }
760 for (i = 0x00; i < 0x19; i++) {
761 value = b43_read16(dev, 0x0690);
762 if (!(value & 0x0100))
763 break;
764 udelay(10);
765 }
766 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
767 b43_radio_write16(dev, 0x0051, 0x0037);
768 }
769
key_write(struct b43_wldev * dev,u8 index,u8 algorithm,const u8 * key)770 static void key_write(struct b43_wldev *dev,
771 u8 index, u8 algorithm, const u8 *key)
772 {
773 unsigned int i;
774 u32 offset;
775 u16 value;
776 u16 kidx;
777
778 /* Key index/algo block */
779 kidx = b43_kidx_to_fw(dev, index);
780 value = ((kidx << 4) | algorithm);
781 b43_shm_write16(dev, B43_SHM_SHARED,
782 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
783
784 /* Write the key to the Key Table Pointer offset */
785 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
786 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
787 value = key[i];
788 value |= (u16) (key[i + 1]) << 8;
789 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
790 }
791 }
792
keymac_write(struct b43_wldev * dev,u8 index,const u8 * addr)793 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
794 {
795 u32 addrtmp[2] = { 0, 0, };
796 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
797
798 if (b43_new_kidx_api(dev))
799 pairwise_keys_start = B43_NR_GROUP_KEYS;
800
801 B43_WARN_ON(index < pairwise_keys_start);
802 /* We have four default TX keys and possibly four default RX keys.
803 * Physical mac 0 is mapped to physical key 4 or 8, depending
804 * on the firmware version.
805 * So we must adjust the index here.
806 */
807 index -= pairwise_keys_start;
808 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
809
810 if (addr) {
811 addrtmp[0] = addr[0];
812 addrtmp[0] |= ((u32) (addr[1]) << 8);
813 addrtmp[0] |= ((u32) (addr[2]) << 16);
814 addrtmp[0] |= ((u32) (addr[3]) << 24);
815 addrtmp[1] = addr[4];
816 addrtmp[1] |= ((u32) (addr[5]) << 8);
817 }
818
819 /* Receive match transmitter address (RCMTA) mechanism */
820 b43_shm_write32(dev, B43_SHM_RCMTA,
821 (index * 2) + 0, addrtmp[0]);
822 b43_shm_write16(dev, B43_SHM_RCMTA,
823 (index * 2) + 1, addrtmp[1]);
824 }
825
826 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
827 * When a packet is received, the iv32 is checked.
828 * - if it doesn't the packet is returned without modification (and software
829 * decryption can be done). That's what happen when iv16 wrap.
830 * - if it does, the rc4 key is computed, and decryption is tried.
831 * Either it will success and B43_RX_MAC_DEC is returned,
832 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
833 * and the packet is not usable (it got modified by the ucode).
834 * So in order to never have B43_RX_MAC_DECERR, we should provide
835 * a iv32 and phase1key that match. Because we drop packets in case of
836 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
837 * packets will be lost without higher layer knowing (ie no resync possible
838 * until next wrap).
839 *
840 * NOTE : this should support 50 key like RCMTA because
841 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
842 */
rx_tkip_phase1_write(struct b43_wldev * dev,u8 index,u32 iv32,u16 * phase1key)843 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
844 u16 *phase1key)
845 {
846 unsigned int i;
847 u32 offset;
848 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
849
850 if (!modparam_hwtkip)
851 return;
852
853 if (b43_new_kidx_api(dev))
854 pairwise_keys_start = B43_NR_GROUP_KEYS;
855
856 B43_WARN_ON(index < pairwise_keys_start);
857 /* We have four default TX keys and possibly four default RX keys.
858 * Physical mac 0 is mapped to physical key 4 or 8, depending
859 * on the firmware version.
860 * So we must adjust the index here.
861 */
862 index -= pairwise_keys_start;
863 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
864
865 if (b43_debug(dev, B43_DBG_KEYS)) {
866 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
867 index, iv32);
868 }
869 /* Write the key to the RX tkip shared mem */
870 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
871 for (i = 0; i < 10; i += 2) {
872 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
873 phase1key ? phase1key[i / 2] : 0);
874 }
875 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
876 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
877 }
878
b43_op_update_tkip_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_key_conf * keyconf,struct ieee80211_sta * sta,u32 iv32,u16 * phase1key)879 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
880 struct ieee80211_vif *vif,
881 struct ieee80211_key_conf *keyconf,
882 struct ieee80211_sta *sta,
883 u32 iv32, u16 *phase1key)
884 {
885 struct b43_wl *wl = hw_to_b43_wl(hw);
886 struct b43_wldev *dev;
887 int index = keyconf->hw_key_idx;
888
889 if (B43_WARN_ON(!modparam_hwtkip))
890 return;
891
892 /* This is only called from the RX path through mac80211, where
893 * our mutex is already locked. */
894 B43_WARN_ON(!mutex_is_locked(&wl->mutex));
895 dev = wl->current_dev;
896 B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
897
898 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
899
900 rx_tkip_phase1_write(dev, index, iv32, phase1key);
901 /* only pairwise TKIP keys are supported right now */
902 if (WARN_ON(!sta))
903 return;
904 keymac_write(dev, index, sta->addr);
905 }
906
do_key_write(struct b43_wldev * dev,u8 index,u8 algorithm,const u8 * key,size_t key_len,const u8 * mac_addr)907 static void do_key_write(struct b43_wldev *dev,
908 u8 index, u8 algorithm,
909 const u8 *key, size_t key_len, const u8 *mac_addr)
910 {
911 u8 buf[B43_SEC_KEYSIZE] = { 0, };
912 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
913
914 if (b43_new_kidx_api(dev))
915 pairwise_keys_start = B43_NR_GROUP_KEYS;
916
917 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
918 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
919
920 if (index >= pairwise_keys_start)
921 keymac_write(dev, index, NULL); /* First zero out mac. */
922 if (algorithm == B43_SEC_ALGO_TKIP) {
923 /*
924 * We should provide an initial iv32, phase1key pair.
925 * We could start with iv32=0 and compute the corresponding
926 * phase1key, but this means calling ieee80211_get_tkip_key
927 * with a fake skb (or export other tkip function).
928 * Because we are lazy we hope iv32 won't start with
929 * 0xffffffff and let's b43_op_update_tkip_key provide a
930 * correct pair.
931 */
932 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
933 } else if (index >= pairwise_keys_start) /* clear it */
934 rx_tkip_phase1_write(dev, index, 0, NULL);
935 if (key)
936 memcpy(buf, key, key_len);
937 key_write(dev, index, algorithm, buf);
938 if (index >= pairwise_keys_start)
939 keymac_write(dev, index, mac_addr);
940
941 dev->key[index].algorithm = algorithm;
942 }
943
b43_key_write(struct b43_wldev * dev,int index,u8 algorithm,const u8 * key,size_t key_len,const u8 * mac_addr,struct ieee80211_key_conf * keyconf)944 static int b43_key_write(struct b43_wldev *dev,
945 int index, u8 algorithm,
946 const u8 *key, size_t key_len,
947 const u8 *mac_addr,
948 struct ieee80211_key_conf *keyconf)
949 {
950 int i;
951 int pairwise_keys_start;
952
953 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
954 * - Temporal Encryption Key (128 bits)
955 * - Temporal Authenticator Tx MIC Key (64 bits)
956 * - Temporal Authenticator Rx MIC Key (64 bits)
957 *
958 * Hardware only store TEK
959 */
960 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
961 key_len = 16;
962 if (key_len > B43_SEC_KEYSIZE)
963 return -EINVAL;
964 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
965 /* Check that we don't already have this key. */
966 B43_WARN_ON(dev->key[i].keyconf == keyconf);
967 }
968 if (index < 0) {
969 /* Pairwise key. Get an empty slot for the key. */
970 if (b43_new_kidx_api(dev))
971 pairwise_keys_start = B43_NR_GROUP_KEYS;
972 else
973 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
974 for (i = pairwise_keys_start;
975 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
976 i++) {
977 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
978 if (!dev->key[i].keyconf) {
979 /* found empty */
980 index = i;
981 break;
982 }
983 }
984 if (index < 0) {
985 b43warn(dev->wl, "Out of hardware key memory\n");
986 return -ENOSPC;
987 }
988 } else
989 B43_WARN_ON(index > 3);
990
991 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
992 if ((index <= 3) && !b43_new_kidx_api(dev)) {
993 /* Default RX key */
994 B43_WARN_ON(mac_addr);
995 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
996 }
997 keyconf->hw_key_idx = index;
998 dev->key[index].keyconf = keyconf;
999
1000 return 0;
1001 }
1002
b43_key_clear(struct b43_wldev * dev,int index)1003 static int b43_key_clear(struct b43_wldev *dev, int index)
1004 {
1005 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
1006 return -EINVAL;
1007 do_key_write(dev, index, B43_SEC_ALGO_NONE,
1008 NULL, B43_SEC_KEYSIZE, NULL);
1009 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1010 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
1011 NULL, B43_SEC_KEYSIZE, NULL);
1012 }
1013 dev->key[index].keyconf = NULL;
1014
1015 return 0;
1016 }
1017
b43_clear_keys(struct b43_wldev * dev)1018 static void b43_clear_keys(struct b43_wldev *dev)
1019 {
1020 int i, count;
1021
1022 if (b43_new_kidx_api(dev))
1023 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1024 else
1025 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1026 for (i = 0; i < count; i++)
1027 b43_key_clear(dev, i);
1028 }
1029
b43_dump_keymemory(struct b43_wldev * dev)1030 static void b43_dump_keymemory(struct b43_wldev *dev)
1031 {
1032 unsigned int i, index, count, offset, pairwise_keys_start;
1033 u8 mac[ETH_ALEN];
1034 u16 algo;
1035 u32 rcmta0;
1036 u16 rcmta1;
1037 u64 hf;
1038 struct b43_key *key;
1039
1040 if (!b43_debug(dev, B43_DBG_KEYS))
1041 return;
1042
1043 hf = b43_hf_read(dev);
1044 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1045 !!(hf & B43_HF_USEDEFKEYS));
1046 if (b43_new_kidx_api(dev)) {
1047 pairwise_keys_start = B43_NR_GROUP_KEYS;
1048 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1049 } else {
1050 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1051 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1052 }
1053 for (index = 0; index < count; index++) {
1054 key = &(dev->key[index]);
1055 printk(KERN_DEBUG "Key slot %02u: %s",
1056 index, (key->keyconf == NULL) ? " " : "*");
1057 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1058 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1059 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1060 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1061 }
1062
1063 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1064 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1065 printk(" Algo: %04X/%02X", algo, key->algorithm);
1066
1067 if (index >= pairwise_keys_start) {
1068 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1069 printk(" TKIP: ");
1070 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1071 for (i = 0; i < 14; i += 2) {
1072 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1073 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1074 }
1075 }
1076 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1077 ((index - pairwise_keys_start) * 2) + 0);
1078 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1079 ((index - pairwise_keys_start) * 2) + 1);
1080 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1081 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1082 printk(" MAC: %pM", mac);
1083 } else
1084 printk(" DEFAULT KEY");
1085 printk("\n");
1086 }
1087 }
1088
b43_power_saving_ctl_bits(struct b43_wldev * dev,unsigned int ps_flags)1089 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1090 {
1091 u32 macctl;
1092 u16 ucstat;
1093 bool hwps;
1094 bool awake;
1095 int i;
1096
1097 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1098 (ps_flags & B43_PS_DISABLED));
1099 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1100
1101 if (ps_flags & B43_PS_ENABLED) {
1102 hwps = 1;
1103 } else if (ps_flags & B43_PS_DISABLED) {
1104 hwps = 0;
1105 } else {
1106 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1107 // and thus is not an AP and we are associated, set bit 25
1108 }
1109 if (ps_flags & B43_PS_AWAKE) {
1110 awake = 1;
1111 } else if (ps_flags & B43_PS_ASLEEP) {
1112 awake = 0;
1113 } else {
1114 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1115 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1116 // successful, set bit26
1117 }
1118
1119 /* FIXME: For now we force awake-on and hwps-off */
1120 hwps = 0;
1121 awake = 1;
1122
1123 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1124 if (hwps)
1125 macctl |= B43_MACCTL_HWPS;
1126 else
1127 macctl &= ~B43_MACCTL_HWPS;
1128 if (awake)
1129 macctl |= B43_MACCTL_AWAKE;
1130 else
1131 macctl &= ~B43_MACCTL_AWAKE;
1132 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1133 /* Commit write */
1134 b43_read32(dev, B43_MMIO_MACCTL);
1135 if (awake && dev->dev->id.revision >= 5) {
1136 /* Wait for the microcode to wake up. */
1137 for (i = 0; i < 100; i++) {
1138 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1139 B43_SHM_SH_UCODESTAT);
1140 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1141 break;
1142 udelay(10);
1143 }
1144 }
1145 }
1146
b43_wireless_core_reset(struct b43_wldev * dev,u32 flags)1147 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1148 {
1149 u32 tmslow;
1150 u32 macctl;
1151
1152 flags |= B43_TMSLOW_PHYCLKEN;
1153 flags |= B43_TMSLOW_PHYRESET;
1154 if (dev->phy.type == B43_PHYTYPE_N)
1155 flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */
1156 ssb_device_enable(dev->dev, flags);
1157 msleep(2); /* Wait for the PLL to turn on. */
1158
1159 /* Now take the PHY out of Reset again */
1160 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1161 tmslow |= SSB_TMSLOW_FGC;
1162 tmslow &= ~B43_TMSLOW_PHYRESET;
1163 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1164 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1165 msleep(1);
1166 tmslow &= ~SSB_TMSLOW_FGC;
1167 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1168 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1169 msleep(1);
1170
1171 /* Turn Analog ON, but only if we already know the PHY-type.
1172 * This protects against very early setup where we don't know the
1173 * PHY-type, yet. wireless_core_reset will be called once again later,
1174 * when we know the PHY-type. */
1175 if (dev->phy.ops)
1176 dev->phy.ops->switch_analog(dev, 1);
1177
1178 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1179 macctl &= ~B43_MACCTL_GMODE;
1180 if (flags & B43_TMSLOW_GMODE)
1181 macctl |= B43_MACCTL_GMODE;
1182 macctl |= B43_MACCTL_IHR_ENABLED;
1183 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1184 }
1185
handle_irq_transmit_status(struct b43_wldev * dev)1186 static void handle_irq_transmit_status(struct b43_wldev *dev)
1187 {
1188 u32 v0, v1;
1189 u16 tmp;
1190 struct b43_txstatus stat;
1191
1192 while (1) {
1193 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1194 if (!(v0 & 0x00000001))
1195 break;
1196 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1197
1198 stat.cookie = (v0 >> 16);
1199 stat.seq = (v1 & 0x0000FFFF);
1200 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1201 tmp = (v0 & 0x0000FFFF);
1202 stat.frame_count = ((tmp & 0xF000) >> 12);
1203 stat.rts_count = ((tmp & 0x0F00) >> 8);
1204 stat.supp_reason = ((tmp & 0x001C) >> 2);
1205 stat.pm_indicated = !!(tmp & 0x0080);
1206 stat.intermediate = !!(tmp & 0x0040);
1207 stat.for_ampdu = !!(tmp & 0x0020);
1208 stat.acked = !!(tmp & 0x0002);
1209
1210 b43_handle_txstatus(dev, &stat);
1211 }
1212 }
1213
drain_txstatus_queue(struct b43_wldev * dev)1214 static void drain_txstatus_queue(struct b43_wldev *dev)
1215 {
1216 u32 dummy;
1217
1218 if (dev->dev->id.revision < 5)
1219 return;
1220 /* Read all entries from the microcode TXstatus FIFO
1221 * and throw them away.
1222 */
1223 while (1) {
1224 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1225 if (!(dummy & 0x00000001))
1226 break;
1227 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1228 }
1229 }
1230
b43_jssi_read(struct b43_wldev * dev)1231 static u32 b43_jssi_read(struct b43_wldev *dev)
1232 {
1233 u32 val = 0;
1234
1235 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1236 val <<= 16;
1237 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1238
1239 return val;
1240 }
1241
b43_jssi_write(struct b43_wldev * dev,u32 jssi)1242 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1243 {
1244 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1245 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1246 }
1247
b43_generate_noise_sample(struct b43_wldev * dev)1248 static void b43_generate_noise_sample(struct b43_wldev *dev)
1249 {
1250 b43_jssi_write(dev, 0x7F7F7F7F);
1251 b43_write32(dev, B43_MMIO_MACCMD,
1252 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1253 }
1254
b43_calculate_link_quality(struct b43_wldev * dev)1255 static void b43_calculate_link_quality(struct b43_wldev *dev)
1256 {
1257 /* Top half of Link Quality calculation. */
1258
1259 if (dev->phy.type != B43_PHYTYPE_G)
1260 return;
1261 if (dev->noisecalc.calculation_running)
1262 return;
1263 dev->noisecalc.calculation_running = 1;
1264 dev->noisecalc.nr_samples = 0;
1265
1266 b43_generate_noise_sample(dev);
1267 }
1268
handle_irq_noise(struct b43_wldev * dev)1269 static void handle_irq_noise(struct b43_wldev *dev)
1270 {
1271 struct b43_phy_g *phy = dev->phy.g;
1272 u16 tmp;
1273 u8 noise[4];
1274 u8 i, j;
1275 s32 average;
1276
1277 /* Bottom half of Link Quality calculation. */
1278
1279 if (dev->phy.type != B43_PHYTYPE_G)
1280 return;
1281
1282 /* Possible race condition: It might be possible that the user
1283 * changed to a different channel in the meantime since we
1284 * started the calculation. We ignore that fact, since it's
1285 * not really that much of a problem. The background noise is
1286 * an estimation only anyway. Slightly wrong results will get damped
1287 * by the averaging of the 8 sample rounds. Additionally the
1288 * value is shortlived. So it will be replaced by the next noise
1289 * calculation round soon. */
1290
1291 B43_WARN_ON(!dev->noisecalc.calculation_running);
1292 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1293 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1294 noise[2] == 0x7F || noise[3] == 0x7F)
1295 goto generate_new;
1296
1297 /* Get the noise samples. */
1298 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1299 i = dev->noisecalc.nr_samples;
1300 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1301 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1302 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1303 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1304 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1305 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1306 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1307 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1308 dev->noisecalc.nr_samples++;
1309 if (dev->noisecalc.nr_samples == 8) {
1310 /* Calculate the Link Quality by the noise samples. */
1311 average = 0;
1312 for (i = 0; i < 8; i++) {
1313 for (j = 0; j < 4; j++)
1314 average += dev->noisecalc.samples[i][j];
1315 }
1316 average /= (8 * 4);
1317 average *= 125;
1318 average += 64;
1319 average /= 128;
1320 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1321 tmp = (tmp / 128) & 0x1F;
1322 if (tmp >= 8)
1323 average += 2;
1324 else
1325 average -= 25;
1326 if (tmp == 8)
1327 average -= 72;
1328 else
1329 average -= 48;
1330
1331 dev->stats.link_noise = average;
1332 dev->noisecalc.calculation_running = 0;
1333 return;
1334 }
1335 generate_new:
1336 b43_generate_noise_sample(dev);
1337 }
1338
handle_irq_tbtt_indication(struct b43_wldev * dev)1339 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1340 {
1341 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1342 ///TODO: PS TBTT
1343 } else {
1344 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1345 b43_power_saving_ctl_bits(dev, 0);
1346 }
1347 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1348 dev->dfq_valid = 1;
1349 }
1350
handle_irq_atim_end(struct b43_wldev * dev)1351 static void handle_irq_atim_end(struct b43_wldev *dev)
1352 {
1353 if (dev->dfq_valid) {
1354 b43_write32(dev, B43_MMIO_MACCMD,
1355 b43_read32(dev, B43_MMIO_MACCMD)
1356 | B43_MACCMD_DFQ_VALID);
1357 dev->dfq_valid = 0;
1358 }
1359 }
1360
handle_irq_pmq(struct b43_wldev * dev)1361 static void handle_irq_pmq(struct b43_wldev *dev)
1362 {
1363 u32 tmp;
1364
1365 //TODO: AP mode.
1366
1367 while (1) {
1368 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1369 if (!(tmp & 0x00000008))
1370 break;
1371 }
1372 /* 16bit write is odd, but correct. */
1373 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1374 }
1375
b43_write_template_common(struct b43_wldev * dev,const u8 * data,u16 size,u16 ram_offset,u16 shm_size_offset,u8 rate)1376 static void b43_write_template_common(struct b43_wldev *dev,
1377 const u8 *data, u16 size,
1378 u16 ram_offset,
1379 u16 shm_size_offset, u8 rate)
1380 {
1381 u32 i, tmp;
1382 struct b43_plcp_hdr4 plcp;
1383
1384 plcp.data = 0;
1385 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1386 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1387 ram_offset += sizeof(u32);
1388 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1389 * So leave the first two bytes of the next write blank.
1390 */
1391 tmp = (u32) (data[0]) << 16;
1392 tmp |= (u32) (data[1]) << 24;
1393 b43_ram_write(dev, ram_offset, tmp);
1394 ram_offset += sizeof(u32);
1395 for (i = 2; i < size; i += sizeof(u32)) {
1396 tmp = (u32) (data[i + 0]);
1397 if (i + 1 < size)
1398 tmp |= (u32) (data[i + 1]) << 8;
1399 if (i + 2 < size)
1400 tmp |= (u32) (data[i + 2]) << 16;
1401 if (i + 3 < size)
1402 tmp |= (u32) (data[i + 3]) << 24;
1403 b43_ram_write(dev, ram_offset + i - 2, tmp);
1404 }
1405 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1406 size + sizeof(struct b43_plcp_hdr6));
1407 }
1408
1409 /* Check if the use of the antenna that ieee80211 told us to
1410 * use is possible. This will fall back to DEFAULT.
1411 * "antenna_nr" is the antenna identifier we got from ieee80211. */
b43_ieee80211_antenna_sanitize(struct b43_wldev * dev,u8 antenna_nr)1412 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1413 u8 antenna_nr)
1414 {
1415 u8 antenna_mask;
1416
1417 if (antenna_nr == 0) {
1418 /* Zero means "use default antenna". That's always OK. */
1419 return 0;
1420 }
1421
1422 /* Get the mask of available antennas. */
1423 if (dev->phy.gmode)
1424 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1425 else
1426 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1427
1428 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1429 /* This antenna is not available. Fall back to default. */
1430 return 0;
1431 }
1432
1433 return antenna_nr;
1434 }
1435
1436 /* Convert a b43 antenna number value to the PHY TX control value. */
b43_antenna_to_phyctl(int antenna)1437 static u16 b43_antenna_to_phyctl(int antenna)
1438 {
1439 switch (antenna) {
1440 case B43_ANTENNA0:
1441 return B43_TXH_PHY_ANT0;
1442 case B43_ANTENNA1:
1443 return B43_TXH_PHY_ANT1;
1444 case B43_ANTENNA2:
1445 return B43_TXH_PHY_ANT2;
1446 case B43_ANTENNA3:
1447 return B43_TXH_PHY_ANT3;
1448 case B43_ANTENNA_AUTO0:
1449 case B43_ANTENNA_AUTO1:
1450 return B43_TXH_PHY_ANT01AUTO;
1451 }
1452 B43_WARN_ON(1);
1453 return 0;
1454 }
1455
b43_write_beacon_template(struct b43_wldev * dev,u16 ram_offset,u16 shm_size_offset)1456 static void b43_write_beacon_template(struct b43_wldev *dev,
1457 u16 ram_offset,
1458 u16 shm_size_offset)
1459 {
1460 unsigned int i, len, variable_len;
1461 const struct ieee80211_mgmt *bcn;
1462 const u8 *ie;
1463 bool tim_found = 0;
1464 unsigned int rate;
1465 u16 ctl;
1466 int antenna;
1467 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1468
1469 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1470 len = min((size_t) dev->wl->current_beacon->len,
1471 0x200 - sizeof(struct b43_plcp_hdr6));
1472 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1473
1474 b43_write_template_common(dev, (const u8 *)bcn,
1475 len, ram_offset, shm_size_offset, rate);
1476
1477 /* Write the PHY TX control parameters. */
1478 antenna = B43_ANTENNA_DEFAULT;
1479 antenna = b43_antenna_to_phyctl(antenna);
1480 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1481 /* We can't send beacons with short preamble. Would get PHY errors. */
1482 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1483 ctl &= ~B43_TXH_PHY_ANT;
1484 ctl &= ~B43_TXH_PHY_ENC;
1485 ctl |= antenna;
1486 if (b43_is_cck_rate(rate))
1487 ctl |= B43_TXH_PHY_ENC_CCK;
1488 else
1489 ctl |= B43_TXH_PHY_ENC_OFDM;
1490 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1491
1492 /* Find the position of the TIM and the DTIM_period value
1493 * and write them to SHM. */
1494 ie = bcn->u.beacon.variable;
1495 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1496 for (i = 0; i < variable_len - 2; ) {
1497 uint8_t ie_id, ie_len;
1498
1499 ie_id = ie[i];
1500 ie_len = ie[i + 1];
1501 if (ie_id == 5) {
1502 u16 tim_position;
1503 u16 dtim_period;
1504 /* This is the TIM Information Element */
1505
1506 /* Check whether the ie_len is in the beacon data range. */
1507 if (variable_len < ie_len + 2 + i)
1508 break;
1509 /* A valid TIM is at least 4 bytes long. */
1510 if (ie_len < 4)
1511 break;
1512 tim_found = 1;
1513
1514 tim_position = sizeof(struct b43_plcp_hdr6);
1515 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1516 tim_position += i;
1517
1518 dtim_period = ie[i + 3];
1519
1520 b43_shm_write16(dev, B43_SHM_SHARED,
1521 B43_SHM_SH_TIMBPOS, tim_position);
1522 b43_shm_write16(dev, B43_SHM_SHARED,
1523 B43_SHM_SH_DTIMPER, dtim_period);
1524 break;
1525 }
1526 i += ie_len + 2;
1527 }
1528 if (!tim_found) {
1529 /*
1530 * If ucode wants to modify TIM do it behind the beacon, this
1531 * will happen, for example, when doing mesh networking.
1532 */
1533 b43_shm_write16(dev, B43_SHM_SHARED,
1534 B43_SHM_SH_TIMBPOS,
1535 len + sizeof(struct b43_plcp_hdr6));
1536 b43_shm_write16(dev, B43_SHM_SHARED,
1537 B43_SHM_SH_DTIMPER, 0);
1538 }
1539 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1540 }
1541
b43_upload_beacon0(struct b43_wldev * dev)1542 static void b43_upload_beacon0(struct b43_wldev *dev)
1543 {
1544 struct b43_wl *wl = dev->wl;
1545
1546 if (wl->beacon0_uploaded)
1547 return;
1548 b43_write_beacon_template(dev, 0x68, 0x18);
1549 wl->beacon0_uploaded = 1;
1550 }
1551
b43_upload_beacon1(struct b43_wldev * dev)1552 static void b43_upload_beacon1(struct b43_wldev *dev)
1553 {
1554 struct b43_wl *wl = dev->wl;
1555
1556 if (wl->beacon1_uploaded)
1557 return;
1558 b43_write_beacon_template(dev, 0x468, 0x1A);
1559 wl->beacon1_uploaded = 1;
1560 }
1561
handle_irq_beacon(struct b43_wldev * dev)1562 static void handle_irq_beacon(struct b43_wldev *dev)
1563 {
1564 struct b43_wl *wl = dev->wl;
1565 u32 cmd, beacon0_valid, beacon1_valid;
1566
1567 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1568 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1569 return;
1570
1571 /* This is the bottom half of the asynchronous beacon update. */
1572
1573 /* Ignore interrupt in the future. */
1574 dev->irq_mask &= ~B43_IRQ_BEACON;
1575
1576 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1577 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1578 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1579
1580 /* Schedule interrupt manually, if busy. */
1581 if (beacon0_valid && beacon1_valid) {
1582 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1583 dev->irq_mask |= B43_IRQ_BEACON;
1584 return;
1585 }
1586
1587 if (unlikely(wl->beacon_templates_virgin)) {
1588 /* We never uploaded a beacon before.
1589 * Upload both templates now, but only mark one valid. */
1590 wl->beacon_templates_virgin = 0;
1591 b43_upload_beacon0(dev);
1592 b43_upload_beacon1(dev);
1593 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1594 cmd |= B43_MACCMD_BEACON0_VALID;
1595 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1596 } else {
1597 if (!beacon0_valid) {
1598 b43_upload_beacon0(dev);
1599 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1600 cmd |= B43_MACCMD_BEACON0_VALID;
1601 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1602 } else if (!beacon1_valid) {
1603 b43_upload_beacon1(dev);
1604 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1605 cmd |= B43_MACCMD_BEACON1_VALID;
1606 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1607 }
1608 }
1609 }
1610
b43_do_beacon_update_trigger_work(struct b43_wldev * dev)1611 static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1612 {
1613 u32 old_irq_mask = dev->irq_mask;
1614
1615 /* update beacon right away or defer to irq */
1616 handle_irq_beacon(dev);
1617 if (old_irq_mask != dev->irq_mask) {
1618 /* The handler updated the IRQ mask. */
1619 B43_WARN_ON(!dev->irq_mask);
1620 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1621 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1622 } else {
1623 /* Device interrupts are currently disabled. That means
1624 * we just ran the hardirq handler and scheduled the
1625 * IRQ thread. The thread will write the IRQ mask when
1626 * it finished, so there's nothing to do here. Writing
1627 * the mask _here_ would incorrectly re-enable IRQs. */
1628 }
1629 }
1630 }
1631
b43_beacon_update_trigger_work(struct work_struct * work)1632 static void b43_beacon_update_trigger_work(struct work_struct *work)
1633 {
1634 struct b43_wl *wl = container_of(work, struct b43_wl,
1635 beacon_update_trigger);
1636 struct b43_wldev *dev;
1637
1638 mutex_lock(&wl->mutex);
1639 dev = wl->current_dev;
1640 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1641 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
1642 /* wl->mutex is enough. */
1643 b43_do_beacon_update_trigger_work(dev);
1644 mmiowb();
1645 } else {
1646 spin_lock_irq(&wl->hardirq_lock);
1647 b43_do_beacon_update_trigger_work(dev);
1648 mmiowb();
1649 spin_unlock_irq(&wl->hardirq_lock);
1650 }
1651 }
1652 mutex_unlock(&wl->mutex);
1653 }
1654
1655 /* Asynchronously update the packet templates in template RAM.
1656 * Locking: Requires wl->mutex to be locked. */
b43_update_templates(struct b43_wl * wl)1657 static void b43_update_templates(struct b43_wl *wl)
1658 {
1659 struct sk_buff *beacon;
1660
1661 /* This is the top half of the ansynchronous beacon update.
1662 * The bottom half is the beacon IRQ.
1663 * Beacon update must be asynchronous to avoid sending an
1664 * invalid beacon. This can happen for example, if the firmware
1665 * transmits a beacon while we are updating it. */
1666
1667 /* We could modify the existing beacon and set the aid bit in
1668 * the TIM field, but that would probably require resizing and
1669 * moving of data within the beacon template.
1670 * Simply request a new beacon and let mac80211 do the hard work. */
1671 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1672 if (unlikely(!beacon))
1673 return;
1674
1675 if (wl->current_beacon)
1676 dev_kfree_skb_any(wl->current_beacon);
1677 wl->current_beacon = beacon;
1678 wl->beacon0_uploaded = 0;
1679 wl->beacon1_uploaded = 0;
1680 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1681 }
1682
b43_set_beacon_int(struct b43_wldev * dev,u16 beacon_int)1683 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1684 {
1685 b43_time_lock(dev);
1686 if (dev->dev->id.revision >= 3) {
1687 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1688 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1689 } else {
1690 b43_write16(dev, 0x606, (beacon_int >> 6));
1691 b43_write16(dev, 0x610, beacon_int);
1692 }
1693 b43_time_unlock(dev);
1694 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1695 }
1696
b43_handle_firmware_panic(struct b43_wldev * dev)1697 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1698 {
1699 u16 reason;
1700
1701 /* Read the register that contains the reason code for the panic. */
1702 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1703 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1704
1705 switch (reason) {
1706 default:
1707 b43dbg(dev->wl, "The panic reason is unknown.\n");
1708 /* fallthrough */
1709 case B43_FWPANIC_DIE:
1710 /* Do not restart the controller or firmware.
1711 * The device is nonfunctional from now on.
1712 * Restarting would result in this panic to trigger again,
1713 * so we avoid that recursion. */
1714 break;
1715 case B43_FWPANIC_RESTART:
1716 b43_controller_restart(dev, "Microcode panic");
1717 break;
1718 }
1719 }
1720
handle_irq_ucode_debug(struct b43_wldev * dev)1721 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1722 {
1723 unsigned int i, cnt;
1724 u16 reason, marker_id, marker_line;
1725 __le16 *buf;
1726
1727 /* The proprietary firmware doesn't have this IRQ. */
1728 if (!dev->fw.opensource)
1729 return;
1730
1731 /* Read the register that contains the reason code for this IRQ. */
1732 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1733
1734 switch (reason) {
1735 case B43_DEBUGIRQ_PANIC:
1736 b43_handle_firmware_panic(dev);
1737 break;
1738 case B43_DEBUGIRQ_DUMP_SHM:
1739 if (!B43_DEBUG)
1740 break; /* Only with driver debugging enabled. */
1741 buf = kmalloc(4096, GFP_ATOMIC);
1742 if (!buf) {
1743 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1744 goto out;
1745 }
1746 for (i = 0; i < 4096; i += 2) {
1747 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1748 buf[i / 2] = cpu_to_le16(tmp);
1749 }
1750 b43info(dev->wl, "Shared memory dump:\n");
1751 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1752 16, 2, buf, 4096, 1);
1753 kfree(buf);
1754 break;
1755 case B43_DEBUGIRQ_DUMP_REGS:
1756 if (!B43_DEBUG)
1757 break; /* Only with driver debugging enabled. */
1758 b43info(dev->wl, "Microcode register dump:\n");
1759 for (i = 0, cnt = 0; i < 64; i++) {
1760 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1761 if (cnt == 0)
1762 printk(KERN_INFO);
1763 printk("r%02u: 0x%04X ", i, tmp);
1764 cnt++;
1765 if (cnt == 6) {
1766 printk("\n");
1767 cnt = 0;
1768 }
1769 }
1770 printk("\n");
1771 break;
1772 case B43_DEBUGIRQ_MARKER:
1773 if (!B43_DEBUG)
1774 break; /* Only with driver debugging enabled. */
1775 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1776 B43_MARKER_ID_REG);
1777 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1778 B43_MARKER_LINE_REG);
1779 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1780 "at line number %u\n",
1781 marker_id, marker_line);
1782 break;
1783 default:
1784 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1785 reason);
1786 }
1787 out:
1788 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1789 b43_shm_write16(dev, B43_SHM_SCRATCH,
1790 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1791 }
1792
b43_do_interrupt_thread(struct b43_wldev * dev)1793 static void b43_do_interrupt_thread(struct b43_wldev *dev)
1794 {
1795 u32 reason;
1796 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1797 u32 merged_dma_reason = 0;
1798 int i;
1799
1800 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1801 return;
1802
1803 reason = dev->irq_reason;
1804 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1805 dma_reason[i] = dev->dma_reason[i];
1806 merged_dma_reason |= dma_reason[i];
1807 }
1808
1809 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1810 b43err(dev->wl, "MAC transmission error\n");
1811
1812 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1813 b43err(dev->wl, "PHY transmission error\n");
1814 rmb();
1815 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1816 atomic_set(&dev->phy.txerr_cnt,
1817 B43_PHY_TX_BADNESS_LIMIT);
1818 b43err(dev->wl, "Too many PHY TX errors, "
1819 "restarting the controller\n");
1820 b43_controller_restart(dev, "PHY TX errors");
1821 }
1822 }
1823
1824 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1825 B43_DMAIRQ_NONFATALMASK))) {
1826 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1827 b43err(dev->wl, "Fatal DMA error: "
1828 "0x%08X, 0x%08X, 0x%08X, "
1829 "0x%08X, 0x%08X, 0x%08X\n",
1830 dma_reason[0], dma_reason[1],
1831 dma_reason[2], dma_reason[3],
1832 dma_reason[4], dma_reason[5]);
1833 b43err(dev->wl, "This device does not support DMA "
1834 "on your system. It will now be switched to PIO.\n");
1835 /* Fall back to PIO transfers if we get fatal DMA errors! */
1836 dev->use_pio = 1;
1837 b43_controller_restart(dev, "DMA error");
1838 return;
1839 }
1840 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1841 b43err(dev->wl, "DMA error: "
1842 "0x%08X, 0x%08X, 0x%08X, "
1843 "0x%08X, 0x%08X, 0x%08X\n",
1844 dma_reason[0], dma_reason[1],
1845 dma_reason[2], dma_reason[3],
1846 dma_reason[4], dma_reason[5]);
1847 }
1848 }
1849
1850 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1851 handle_irq_ucode_debug(dev);
1852 if (reason & B43_IRQ_TBTT_INDI)
1853 handle_irq_tbtt_indication(dev);
1854 if (reason & B43_IRQ_ATIM_END)
1855 handle_irq_atim_end(dev);
1856 if (reason & B43_IRQ_BEACON)
1857 handle_irq_beacon(dev);
1858 if (reason & B43_IRQ_PMQ)
1859 handle_irq_pmq(dev);
1860 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1861 ;/* TODO */
1862 if (reason & B43_IRQ_NOISESAMPLE_OK)
1863 handle_irq_noise(dev);
1864
1865 /* Check the DMA reason registers for received data. */
1866 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1867 if (b43_using_pio_transfers(dev))
1868 b43_pio_rx(dev->pio.rx_queue);
1869 else
1870 b43_dma_rx(dev->dma.rx_ring);
1871 }
1872 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1873 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1874 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1875 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1876 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1877
1878 if (reason & B43_IRQ_TX_OK)
1879 handle_irq_transmit_status(dev);
1880
1881 /* Re-enable interrupts on the device by restoring the current interrupt mask. */
1882 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1883
1884 #if B43_DEBUG
1885 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
1886 dev->irq_count++;
1887 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
1888 if (reason & (1 << i))
1889 dev->irq_bit_count[i]++;
1890 }
1891 }
1892 #endif
1893 }
1894
1895 /* Interrupt thread handler. Handles device interrupts in thread context. */
b43_interrupt_thread_handler(int irq,void * dev_id)1896 static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
1897 {
1898 struct b43_wldev *dev = dev_id;
1899
1900 mutex_lock(&dev->wl->mutex);
1901 b43_do_interrupt_thread(dev);
1902 mmiowb();
1903 mutex_unlock(&dev->wl->mutex);
1904
1905 return IRQ_HANDLED;
1906 }
1907
b43_do_interrupt(struct b43_wldev * dev)1908 static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
1909 {
1910 u32 reason;
1911
1912 /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
1913 * On SDIO, this runs under wl->mutex. */
1914
1915 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1916 if (reason == 0xffffffff) /* shared IRQ */
1917 return IRQ_NONE;
1918 reason &= dev->irq_mask;
1919 if (!reason)
1920 return IRQ_HANDLED;
1921
1922 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1923 & 0x0001DC00;
1924 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1925 & 0x0000DC00;
1926 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1927 & 0x0000DC00;
1928 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1929 & 0x0001DC00;
1930 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1931 & 0x0000DC00;
1932 /* Unused ring
1933 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1934 & 0x0000DC00;
1935 */
1936
1937 /* ACK the interrupt. */
1938 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1939 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1940 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1941 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1942 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1943 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1944 /* Unused ring
1945 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1946 */
1947
1948 /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
1949 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
1950 /* Save the reason bitmasks for the IRQ thread handler. */
1951 dev->irq_reason = reason;
1952
1953 return IRQ_WAKE_THREAD;
1954 }
1955
1956 /* Interrupt handler top-half. This runs with interrupts disabled. */
b43_interrupt_handler(int irq,void * dev_id)1957 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1958 {
1959 struct b43_wldev *dev = dev_id;
1960 irqreturn_t ret;
1961
1962 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
1963 return IRQ_NONE;
1964
1965 spin_lock(&dev->wl->hardirq_lock);
1966 ret = b43_do_interrupt(dev);
1967 mmiowb();
1968 spin_unlock(&dev->wl->hardirq_lock);
1969
1970 return ret;
1971 }
1972
1973 /* SDIO interrupt handler. This runs in process context. */
b43_sdio_interrupt_handler(struct b43_wldev * dev)1974 static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
1975 {
1976 struct b43_wl *wl = dev->wl;
1977 irqreturn_t ret;
1978
1979 mutex_lock(&wl->mutex);
1980
1981 ret = b43_do_interrupt(dev);
1982 if (ret == IRQ_WAKE_THREAD)
1983 b43_do_interrupt_thread(dev);
1984
1985 mutex_unlock(&wl->mutex);
1986 }
1987
b43_do_release_fw(struct b43_firmware_file * fw)1988 void b43_do_release_fw(struct b43_firmware_file *fw)
1989 {
1990 release_firmware(fw->data);
1991 fw->data = NULL;
1992 fw->filename = NULL;
1993 }
1994
b43_release_firmware(struct b43_wldev * dev)1995 static void b43_release_firmware(struct b43_wldev *dev)
1996 {
1997 b43_do_release_fw(&dev->fw.ucode);
1998 b43_do_release_fw(&dev->fw.pcm);
1999 b43_do_release_fw(&dev->fw.initvals);
2000 b43_do_release_fw(&dev->fw.initvals_band);
2001 }
2002
b43_print_fw_helptext(struct b43_wl * wl,bool error)2003 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
2004 {
2005 const char text[] =
2006 "You must go to " \
2007 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
2008 "and download the correct firmware for this driver version. " \
2009 "Please carefully read all instructions on this website.\n";
2010
2011 if (error)
2012 b43err(wl, text);
2013 else
2014 b43warn(wl, text);
2015 }
2016
b43_do_request_fw(struct b43_request_fw_context * ctx,const char * name,struct b43_firmware_file * fw)2017 int b43_do_request_fw(struct b43_request_fw_context *ctx,
2018 const char *name,
2019 struct b43_firmware_file *fw)
2020 {
2021 const struct firmware *blob;
2022 struct b43_fw_header *hdr;
2023 u32 size;
2024 int err;
2025
2026 if (!name) {
2027 /* Don't fetch anything. Free possibly cached firmware. */
2028 /* FIXME: We should probably keep it anyway, to save some headache
2029 * on suspend/resume with multiband devices. */
2030 b43_do_release_fw(fw);
2031 return 0;
2032 }
2033 if (fw->filename) {
2034 if ((fw->type == ctx->req_type) &&
2035 (strcmp(fw->filename, name) == 0))
2036 return 0; /* Already have this fw. */
2037 /* Free the cached firmware first. */
2038 /* FIXME: We should probably do this later after we successfully
2039 * got the new fw. This could reduce headache with multiband devices.
2040 * We could also redesign this to cache the firmware for all possible
2041 * bands all the time. */
2042 b43_do_release_fw(fw);
2043 }
2044
2045 switch (ctx->req_type) {
2046 case B43_FWTYPE_PROPRIETARY:
2047 snprintf(ctx->fwname, sizeof(ctx->fwname),
2048 "b43%s/%s.fw",
2049 modparam_fwpostfix, name);
2050 break;
2051 case B43_FWTYPE_OPENSOURCE:
2052 snprintf(ctx->fwname, sizeof(ctx->fwname),
2053 "b43-open%s/%s.fw",
2054 modparam_fwpostfix, name);
2055 break;
2056 default:
2057 B43_WARN_ON(1);
2058 return -ENOSYS;
2059 }
2060 err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
2061 if (err == -ENOENT) {
2062 snprintf(ctx->errors[ctx->req_type],
2063 sizeof(ctx->errors[ctx->req_type]),
2064 "Firmware file \"%s\" not found\n", ctx->fwname);
2065 return err;
2066 } else if (err) {
2067 snprintf(ctx->errors[ctx->req_type],
2068 sizeof(ctx->errors[ctx->req_type]),
2069 "Firmware file \"%s\" request failed (err=%d)\n",
2070 ctx->fwname, err);
2071 return err;
2072 }
2073 if (blob->size < sizeof(struct b43_fw_header))
2074 goto err_format;
2075 hdr = (struct b43_fw_header *)(blob->data);
2076 switch (hdr->type) {
2077 case B43_FW_TYPE_UCODE:
2078 case B43_FW_TYPE_PCM:
2079 size = be32_to_cpu(hdr->size);
2080 if (size != blob->size - sizeof(struct b43_fw_header))
2081 goto err_format;
2082 /* fallthrough */
2083 case B43_FW_TYPE_IV:
2084 if (hdr->ver != 1)
2085 goto err_format;
2086 break;
2087 default:
2088 goto err_format;
2089 }
2090
2091 fw->data = blob;
2092 fw->filename = name;
2093 fw->type = ctx->req_type;
2094
2095 return 0;
2096
2097 err_format:
2098 snprintf(ctx->errors[ctx->req_type],
2099 sizeof(ctx->errors[ctx->req_type]),
2100 "Firmware file \"%s\" format error.\n", ctx->fwname);
2101 release_firmware(blob);
2102
2103 return -EPROTO;
2104 }
2105
b43_try_request_fw(struct b43_request_fw_context * ctx)2106 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2107 {
2108 struct b43_wldev *dev = ctx->dev;
2109 struct b43_firmware *fw = &ctx->dev->fw;
2110 const u8 rev = ctx->dev->dev->id.revision;
2111 const char *filename;
2112 u32 tmshigh;
2113 int err;
2114
2115 /* Get microcode */
2116 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2117 if ((rev >= 5) && (rev <= 10))
2118 filename = "ucode5";
2119 else if ((rev >= 11) && (rev <= 12))
2120 filename = "ucode11";
2121 else if (rev == 13)
2122 filename = "ucode13";
2123 else if (rev == 14)
2124 filename = "ucode14";
2125 else if (rev == 15)
2126 filename = "ucode15";
2127 else if ((rev >= 16) && (rev <= 20))
2128 filename = "ucode16_mimo";
2129 else
2130 goto err_no_ucode;
2131 err = b43_do_request_fw(ctx, filename, &fw->ucode);
2132 if (err)
2133 goto err_load;
2134
2135 /* Get PCM code */
2136 if ((rev >= 5) && (rev <= 10))
2137 filename = "pcm5";
2138 else if (rev >= 11)
2139 filename = NULL;
2140 else
2141 goto err_no_pcm;
2142 fw->pcm_request_failed = 0;
2143 err = b43_do_request_fw(ctx, filename, &fw->pcm);
2144 if (err == -ENOENT) {
2145 /* We did not find a PCM file? Not fatal, but
2146 * core rev <= 10 must do without hwcrypto then. */
2147 fw->pcm_request_failed = 1;
2148 } else if (err)
2149 goto err_load;
2150
2151 /* Get initvals */
2152 switch (dev->phy.type) {
2153 case B43_PHYTYPE_A:
2154 if ((rev >= 5) && (rev <= 10)) {
2155 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2156 filename = "a0g1initvals5";
2157 else
2158 filename = "a0g0initvals5";
2159 } else
2160 goto err_no_initvals;
2161 break;
2162 case B43_PHYTYPE_G:
2163 if ((rev >= 5) && (rev <= 10))
2164 filename = "b0g0initvals5";
2165 else if (rev >= 13)
2166 filename = "b0g0initvals13";
2167 else
2168 goto err_no_initvals;
2169 break;
2170 case B43_PHYTYPE_N:
2171 if (rev >= 16)
2172 filename = "n0initvals16";
2173 else if ((rev >= 11) && (rev <= 12))
2174 filename = "n0initvals11";
2175 else
2176 goto err_no_initvals;
2177 break;
2178 case B43_PHYTYPE_LP:
2179 if (rev == 13)
2180 filename = "lp0initvals13";
2181 else if (rev == 14)
2182 filename = "lp0initvals14";
2183 else if (rev >= 15)
2184 filename = "lp0initvals15";
2185 else
2186 goto err_no_initvals;
2187 break;
2188 default:
2189 goto err_no_initvals;
2190 }
2191 err = b43_do_request_fw(ctx, filename, &fw->initvals);
2192 if (err)
2193 goto err_load;
2194
2195 /* Get bandswitch initvals */
2196 switch (dev->phy.type) {
2197 case B43_PHYTYPE_A:
2198 if ((rev >= 5) && (rev <= 10)) {
2199 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2200 filename = "a0g1bsinitvals5";
2201 else
2202 filename = "a0g0bsinitvals5";
2203 } else if (rev >= 11)
2204 filename = NULL;
2205 else
2206 goto err_no_initvals;
2207 break;
2208 case B43_PHYTYPE_G:
2209 if ((rev >= 5) && (rev <= 10))
2210 filename = "b0g0bsinitvals5";
2211 else if (rev >= 11)
2212 filename = NULL;
2213 else
2214 goto err_no_initvals;
2215 break;
2216 case B43_PHYTYPE_N:
2217 if (rev >= 16)
2218 filename = "n0bsinitvals16";
2219 else if ((rev >= 11) && (rev <= 12))
2220 filename = "n0bsinitvals11";
2221 else
2222 goto err_no_initvals;
2223 break;
2224 case B43_PHYTYPE_LP:
2225 if (rev == 13)
2226 filename = "lp0bsinitvals13";
2227 else if (rev == 14)
2228 filename = "lp0bsinitvals14";
2229 else if (rev >= 15)
2230 filename = "lp0bsinitvals15";
2231 else
2232 goto err_no_initvals;
2233 break;
2234 default:
2235 goto err_no_initvals;
2236 }
2237 err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2238 if (err)
2239 goto err_load;
2240
2241 return 0;
2242
2243 err_no_ucode:
2244 err = ctx->fatal_failure = -EOPNOTSUPP;
2245 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2246 "is required for your device (wl-core rev %u)\n", rev);
2247 goto error;
2248
2249 err_no_pcm:
2250 err = ctx->fatal_failure = -EOPNOTSUPP;
2251 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2252 "is required for your device (wl-core rev %u)\n", rev);
2253 goto error;
2254
2255 err_no_initvals:
2256 err = ctx->fatal_failure = -EOPNOTSUPP;
2257 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2258 "is required for your device (wl-core rev %u)\n", rev);
2259 goto error;
2260
2261 err_load:
2262 /* We failed to load this firmware image. The error message
2263 * already is in ctx->errors. Return and let our caller decide
2264 * what to do. */
2265 goto error;
2266
2267 error:
2268 b43_release_firmware(dev);
2269 return err;
2270 }
2271
b43_request_firmware(struct b43_wldev * dev)2272 static int b43_request_firmware(struct b43_wldev *dev)
2273 {
2274 struct b43_request_fw_context *ctx;
2275 unsigned int i;
2276 int err;
2277 const char *errmsg;
2278
2279 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2280 if (!ctx)
2281 return -ENOMEM;
2282 ctx->dev = dev;
2283
2284 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2285 err = b43_try_request_fw(ctx);
2286 if (!err)
2287 goto out; /* Successfully loaded it. */
2288 err = ctx->fatal_failure;
2289 if (err)
2290 goto out;
2291
2292 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2293 err = b43_try_request_fw(ctx);
2294 if (!err)
2295 goto out; /* Successfully loaded it. */
2296 err = ctx->fatal_failure;
2297 if (err)
2298 goto out;
2299
2300 /* Could not find a usable firmware. Print the errors. */
2301 for (i = 0; i < B43_NR_FWTYPES; i++) {
2302 errmsg = ctx->errors[i];
2303 if (strlen(errmsg))
2304 b43err(dev->wl, errmsg);
2305 }
2306 b43_print_fw_helptext(dev->wl, 1);
2307 err = -ENOENT;
2308
2309 out:
2310 kfree(ctx);
2311 return err;
2312 }
2313
b43_upload_microcode(struct b43_wldev * dev)2314 static int b43_upload_microcode(struct b43_wldev *dev)
2315 {
2316 struct wiphy *wiphy = dev->wl->hw->wiphy;
2317 const size_t hdr_len = sizeof(struct b43_fw_header);
2318 const __be32 *data;
2319 unsigned int i, len;
2320 u16 fwrev, fwpatch, fwdate, fwtime;
2321 u32 tmp, macctl;
2322 int err = 0;
2323
2324 /* Jump the microcode PSM to offset 0 */
2325 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2326 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2327 macctl |= B43_MACCTL_PSM_JMP0;
2328 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2329 /* Zero out all microcode PSM registers and shared memory. */
2330 for (i = 0; i < 64; i++)
2331 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2332 for (i = 0; i < 4096; i += 2)
2333 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2334
2335 /* Upload Microcode. */
2336 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2337 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2338 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2339 for (i = 0; i < len; i++) {
2340 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2341 udelay(10);
2342 }
2343
2344 if (dev->fw.pcm.data) {
2345 /* Upload PCM data. */
2346 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2347 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2348 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2349 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2350 /* No need for autoinc bit in SHM_HW */
2351 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2352 for (i = 0; i < len; i++) {
2353 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2354 udelay(10);
2355 }
2356 }
2357
2358 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2359
2360 /* Start the microcode PSM */
2361 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2362 macctl &= ~B43_MACCTL_PSM_JMP0;
2363 macctl |= B43_MACCTL_PSM_RUN;
2364 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2365
2366 /* Wait for the microcode to load and respond */
2367 i = 0;
2368 while (1) {
2369 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2370 if (tmp == B43_IRQ_MAC_SUSPENDED)
2371 break;
2372 i++;
2373 if (i >= 20) {
2374 b43err(dev->wl, "Microcode not responding\n");
2375 b43_print_fw_helptext(dev->wl, 1);
2376 err = -ENODEV;
2377 goto error;
2378 }
2379 msleep(50);
2380 }
2381 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2382
2383 /* Get and check the revisions. */
2384 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2385 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2386 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2387 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2388
2389 if (fwrev <= 0x128) {
2390 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2391 "binary drivers older than version 4.x is unsupported. "
2392 "You must upgrade your firmware files.\n");
2393 b43_print_fw_helptext(dev->wl, 1);
2394 err = -EOPNOTSUPP;
2395 goto error;
2396 }
2397 dev->fw.rev = fwrev;
2398 dev->fw.patch = fwpatch;
2399 dev->fw.opensource = (fwdate == 0xFFFF);
2400
2401 /* Default to use-all-queues. */
2402 dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues;
2403 dev->qos_enabled = !!modparam_qos;
2404 /* Default to firmware/hardware crypto acceleration. */
2405 dev->hwcrypto_enabled = 1;
2406
2407 if (dev->fw.opensource) {
2408 u16 fwcapa;
2409
2410 /* Patchlevel info is encoded in the "time" field. */
2411 dev->fw.patch = fwtime;
2412 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2413 dev->fw.rev, dev->fw.patch);
2414
2415 fwcapa = b43_fwcapa_read(dev);
2416 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2417 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2418 /* Disable hardware crypto and fall back to software crypto. */
2419 dev->hwcrypto_enabled = 0;
2420 }
2421 if (!(fwcapa & B43_FWCAPA_QOS)) {
2422 b43info(dev->wl, "QoS not supported by firmware\n");
2423 /* Disable QoS. Tweak hw->queues to 1. It will be restored before
2424 * ieee80211_unregister to make sure the networking core can
2425 * properly free possible resources. */
2426 dev->wl->hw->queues = 1;
2427 dev->qos_enabled = 0;
2428 }
2429 } else {
2430 b43info(dev->wl, "Loading firmware version %u.%u "
2431 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2432 fwrev, fwpatch,
2433 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2434 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2435 if (dev->fw.pcm_request_failed) {
2436 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2437 "Hardware accelerated cryptography is disabled.\n");
2438 b43_print_fw_helptext(dev->wl, 0);
2439 }
2440 }
2441
2442 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
2443 dev->fw.rev, dev->fw.patch);
2444 wiphy->hw_version = dev->dev->id.coreid;
2445
2446 if (b43_is_old_txhdr_format(dev)) {
2447 /* We're over the deadline, but we keep support for old fw
2448 * until it turns out to be in major conflict with something new. */
2449 b43warn(dev->wl, "You are using an old firmware image. "
2450 "Support for old firmware will be removed soon "
2451 "(official deadline was July 2008).\n");
2452 b43_print_fw_helptext(dev->wl, 0);
2453 }
2454
2455 return 0;
2456
2457 error:
2458 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2459 macctl &= ~B43_MACCTL_PSM_RUN;
2460 macctl |= B43_MACCTL_PSM_JMP0;
2461 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2462
2463 return err;
2464 }
2465
b43_write_initvals(struct b43_wldev * dev,const struct b43_iv * ivals,size_t count,size_t array_size)2466 static int b43_write_initvals(struct b43_wldev *dev,
2467 const struct b43_iv *ivals,
2468 size_t count,
2469 size_t array_size)
2470 {
2471 const struct b43_iv *iv;
2472 u16 offset;
2473 size_t i;
2474 bool bit32;
2475
2476 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2477 iv = ivals;
2478 for (i = 0; i < count; i++) {
2479 if (array_size < sizeof(iv->offset_size))
2480 goto err_format;
2481 array_size -= sizeof(iv->offset_size);
2482 offset = be16_to_cpu(iv->offset_size);
2483 bit32 = !!(offset & B43_IV_32BIT);
2484 offset &= B43_IV_OFFSET_MASK;
2485 if (offset >= 0x1000)
2486 goto err_format;
2487 if (bit32) {
2488 u32 value;
2489
2490 if (array_size < sizeof(iv->data.d32))
2491 goto err_format;
2492 array_size -= sizeof(iv->data.d32);
2493
2494 value = get_unaligned_be32(&iv->data.d32);
2495 b43_write32(dev, offset, value);
2496
2497 iv = (const struct b43_iv *)((const uint8_t *)iv +
2498 sizeof(__be16) +
2499 sizeof(__be32));
2500 } else {
2501 u16 value;
2502
2503 if (array_size < sizeof(iv->data.d16))
2504 goto err_format;
2505 array_size -= sizeof(iv->data.d16);
2506
2507 value = be16_to_cpu(iv->data.d16);
2508 b43_write16(dev, offset, value);
2509
2510 iv = (const struct b43_iv *)((const uint8_t *)iv +
2511 sizeof(__be16) +
2512 sizeof(__be16));
2513 }
2514 }
2515 if (array_size)
2516 goto err_format;
2517
2518 return 0;
2519
2520 err_format:
2521 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2522 b43_print_fw_helptext(dev->wl, 1);
2523
2524 return -EPROTO;
2525 }
2526
b43_upload_initvals(struct b43_wldev * dev)2527 static int b43_upload_initvals(struct b43_wldev *dev)
2528 {
2529 const size_t hdr_len = sizeof(struct b43_fw_header);
2530 const struct b43_fw_header *hdr;
2531 struct b43_firmware *fw = &dev->fw;
2532 const struct b43_iv *ivals;
2533 size_t count;
2534 int err;
2535
2536 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2537 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2538 count = be32_to_cpu(hdr->size);
2539 err = b43_write_initvals(dev, ivals, count,
2540 fw->initvals.data->size - hdr_len);
2541 if (err)
2542 goto out;
2543 if (fw->initvals_band.data) {
2544 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2545 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2546 count = be32_to_cpu(hdr->size);
2547 err = b43_write_initvals(dev, ivals, count,
2548 fw->initvals_band.data->size - hdr_len);
2549 if (err)
2550 goto out;
2551 }
2552 out:
2553
2554 return err;
2555 }
2556
2557 /* Initialize the GPIOs
2558 * http://bcm-specs.sipsolutions.net/GPIO
2559 */
b43_gpio_init(struct b43_wldev * dev)2560 static int b43_gpio_init(struct b43_wldev *dev)
2561 {
2562 struct ssb_bus *bus = dev->dev->bus;
2563 struct ssb_device *gpiodev, *pcidev = NULL;
2564 u32 mask, set;
2565
2566 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2567 & ~B43_MACCTL_GPOUTSMSK);
2568
2569 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2570 | 0x000F);
2571
2572 mask = 0x0000001F;
2573 set = 0x0000000F;
2574 if (dev->dev->bus->chip_id == 0x4301) {
2575 mask |= 0x0060;
2576 set |= 0x0060;
2577 }
2578 if (0 /* FIXME: conditional unknown */ ) {
2579 b43_write16(dev, B43_MMIO_GPIO_MASK,
2580 b43_read16(dev, B43_MMIO_GPIO_MASK)
2581 | 0x0100);
2582 mask |= 0x0180;
2583 set |= 0x0180;
2584 }
2585 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2586 b43_write16(dev, B43_MMIO_GPIO_MASK,
2587 b43_read16(dev, B43_MMIO_GPIO_MASK)
2588 | 0x0200);
2589 mask |= 0x0200;
2590 set |= 0x0200;
2591 }
2592 if (dev->dev->id.revision >= 2)
2593 mask |= 0x0010; /* FIXME: This is redundant. */
2594
2595 #ifdef CONFIG_SSB_DRIVER_PCICORE
2596 pcidev = bus->pcicore.dev;
2597 #endif
2598 gpiodev = bus->chipco.dev ? : pcidev;
2599 if (!gpiodev)
2600 return 0;
2601 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2602 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2603 & mask) | set);
2604
2605 return 0;
2606 }
2607
2608 /* Turn off all GPIO stuff. Call this on module unload, for example. */
b43_gpio_cleanup(struct b43_wldev * dev)2609 static void b43_gpio_cleanup(struct b43_wldev *dev)
2610 {
2611 struct ssb_bus *bus = dev->dev->bus;
2612 struct ssb_device *gpiodev, *pcidev = NULL;
2613
2614 #ifdef CONFIG_SSB_DRIVER_PCICORE
2615 pcidev = bus->pcicore.dev;
2616 #endif
2617 gpiodev = bus->chipco.dev ? : pcidev;
2618 if (!gpiodev)
2619 return;
2620 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2621 }
2622
2623 /* http://bcm-specs.sipsolutions.net/EnableMac */
b43_mac_enable(struct b43_wldev * dev)2624 void b43_mac_enable(struct b43_wldev *dev)
2625 {
2626 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2627 u16 fwstate;
2628
2629 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2630 B43_SHM_SH_UCODESTAT);
2631 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2632 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2633 b43err(dev->wl, "b43_mac_enable(): The firmware "
2634 "should be suspended, but current state is %u\n",
2635 fwstate);
2636 }
2637 }
2638
2639 dev->mac_suspended--;
2640 B43_WARN_ON(dev->mac_suspended < 0);
2641 if (dev->mac_suspended == 0) {
2642 b43_write32(dev, B43_MMIO_MACCTL,
2643 b43_read32(dev, B43_MMIO_MACCTL)
2644 | B43_MACCTL_ENABLED);
2645 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2646 B43_IRQ_MAC_SUSPENDED);
2647 /* Commit writes */
2648 b43_read32(dev, B43_MMIO_MACCTL);
2649 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2650 b43_power_saving_ctl_bits(dev, 0);
2651 }
2652 }
2653
2654 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
b43_mac_suspend(struct b43_wldev * dev)2655 void b43_mac_suspend(struct b43_wldev *dev)
2656 {
2657 int i;
2658 u32 tmp;
2659
2660 might_sleep();
2661 B43_WARN_ON(dev->mac_suspended < 0);
2662
2663 if (dev->mac_suspended == 0) {
2664 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2665 b43_write32(dev, B43_MMIO_MACCTL,
2666 b43_read32(dev, B43_MMIO_MACCTL)
2667 & ~B43_MACCTL_ENABLED);
2668 /* force pci to flush the write */
2669 b43_read32(dev, B43_MMIO_MACCTL);
2670 for (i = 35; i; i--) {
2671 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2672 if (tmp & B43_IRQ_MAC_SUSPENDED)
2673 goto out;
2674 udelay(10);
2675 }
2676 /* Hm, it seems this will take some time. Use msleep(). */
2677 for (i = 40; i; i--) {
2678 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2679 if (tmp & B43_IRQ_MAC_SUSPENDED)
2680 goto out;
2681 msleep(1);
2682 }
2683 b43err(dev->wl, "MAC suspend failed\n");
2684 }
2685 out:
2686 dev->mac_suspended++;
2687 }
2688
b43_adjust_opmode(struct b43_wldev * dev)2689 static void b43_adjust_opmode(struct b43_wldev *dev)
2690 {
2691 struct b43_wl *wl = dev->wl;
2692 u32 ctl;
2693 u16 cfp_pretbtt;
2694
2695 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2696 /* Reset status to STA infrastructure mode. */
2697 ctl &= ~B43_MACCTL_AP;
2698 ctl &= ~B43_MACCTL_KEEP_CTL;
2699 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2700 ctl &= ~B43_MACCTL_KEEP_BAD;
2701 ctl &= ~B43_MACCTL_PROMISC;
2702 ctl &= ~B43_MACCTL_BEACPROMISC;
2703 ctl |= B43_MACCTL_INFRA;
2704
2705 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2706 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2707 ctl |= B43_MACCTL_AP;
2708 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2709 ctl &= ~B43_MACCTL_INFRA;
2710
2711 if (wl->filter_flags & FIF_CONTROL)
2712 ctl |= B43_MACCTL_KEEP_CTL;
2713 if (wl->filter_flags & FIF_FCSFAIL)
2714 ctl |= B43_MACCTL_KEEP_BAD;
2715 if (wl->filter_flags & FIF_PLCPFAIL)
2716 ctl |= B43_MACCTL_KEEP_BADPLCP;
2717 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2718 ctl |= B43_MACCTL_PROMISC;
2719 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2720 ctl |= B43_MACCTL_BEACPROMISC;
2721
2722 /* Workaround: On old hardware the HW-MAC-address-filter
2723 * doesn't work properly, so always run promisc in filter
2724 * it in software. */
2725 if (dev->dev->id.revision <= 4)
2726 ctl |= B43_MACCTL_PROMISC;
2727
2728 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2729
2730 cfp_pretbtt = 2;
2731 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2732 if (dev->dev->bus->chip_id == 0x4306 &&
2733 dev->dev->bus->chip_rev == 3)
2734 cfp_pretbtt = 100;
2735 else
2736 cfp_pretbtt = 50;
2737 }
2738 b43_write16(dev, 0x612, cfp_pretbtt);
2739
2740 /* FIXME: We don't currently implement the PMQ mechanism,
2741 * so always disable it. If we want to implement PMQ,
2742 * we need to enable it here (clear DISCPMQ) in AP mode.
2743 */
2744 if (0 /* ctl & B43_MACCTL_AP */) {
2745 b43_write32(dev, B43_MMIO_MACCTL,
2746 b43_read32(dev, B43_MMIO_MACCTL)
2747 & ~B43_MACCTL_DISCPMQ);
2748 } else {
2749 b43_write32(dev, B43_MMIO_MACCTL,
2750 b43_read32(dev, B43_MMIO_MACCTL)
2751 | B43_MACCTL_DISCPMQ);
2752 }
2753 }
2754
b43_rate_memory_write(struct b43_wldev * dev,u16 rate,int is_ofdm)2755 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2756 {
2757 u16 offset;
2758
2759 if (is_ofdm) {
2760 offset = 0x480;
2761 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2762 } else {
2763 offset = 0x4C0;
2764 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2765 }
2766 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2767 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2768 }
2769
b43_rate_memory_init(struct b43_wldev * dev)2770 static void b43_rate_memory_init(struct b43_wldev *dev)
2771 {
2772 switch (dev->phy.type) {
2773 case B43_PHYTYPE_A:
2774 case B43_PHYTYPE_G:
2775 case B43_PHYTYPE_N:
2776 case B43_PHYTYPE_LP:
2777 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2778 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2779 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2780 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2781 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2782 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2783 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2784 if (dev->phy.type == B43_PHYTYPE_A)
2785 break;
2786 /* fallthrough */
2787 case B43_PHYTYPE_B:
2788 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2789 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2790 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2791 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2792 break;
2793 default:
2794 B43_WARN_ON(1);
2795 }
2796 }
2797
2798 /* Set the default values for the PHY TX Control Words. */
b43_set_phytxctl_defaults(struct b43_wldev * dev)2799 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2800 {
2801 u16 ctl = 0;
2802
2803 ctl |= B43_TXH_PHY_ENC_CCK;
2804 ctl |= B43_TXH_PHY_ANT01AUTO;
2805 ctl |= B43_TXH_PHY_TXPWR;
2806
2807 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2808 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2809 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2810 }
2811
2812 /* Set the TX-Antenna for management frames sent by firmware. */
b43_mgmtframe_txantenna(struct b43_wldev * dev,int antenna)2813 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2814 {
2815 u16 ant;
2816 u16 tmp;
2817
2818 ant = b43_antenna_to_phyctl(antenna);
2819
2820 /* For ACK/CTS */
2821 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2822 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2823 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2824 /* For Probe Resposes */
2825 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2826 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2827 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2828 }
2829
2830 /* This is the opposite of b43_chip_init() */
b43_chip_exit(struct b43_wldev * dev)2831 static void b43_chip_exit(struct b43_wldev *dev)
2832 {
2833 b43_phy_exit(dev);
2834 b43_gpio_cleanup(dev);
2835 /* firmware is released later */
2836 }
2837
2838 /* Initialize the chip
2839 * http://bcm-specs.sipsolutions.net/ChipInit
2840 */
b43_chip_init(struct b43_wldev * dev)2841 static int b43_chip_init(struct b43_wldev *dev)
2842 {
2843 struct b43_phy *phy = &dev->phy;
2844 int err;
2845 u32 value32, macctl;
2846 u16 value16;
2847
2848 /* Initialize the MAC control */
2849 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2850 if (dev->phy.gmode)
2851 macctl |= B43_MACCTL_GMODE;
2852 macctl |= B43_MACCTL_INFRA;
2853 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2854
2855 err = b43_request_firmware(dev);
2856 if (err)
2857 goto out;
2858 err = b43_upload_microcode(dev);
2859 if (err)
2860 goto out; /* firmware is released later */
2861
2862 err = b43_gpio_init(dev);
2863 if (err)
2864 goto out; /* firmware is released later */
2865
2866 err = b43_upload_initvals(dev);
2867 if (err)
2868 goto err_gpio_clean;
2869
2870 /* Turn the Analog on and initialize the PHY. */
2871 phy->ops->switch_analog(dev, 1);
2872 err = b43_phy_init(dev);
2873 if (err)
2874 goto err_gpio_clean;
2875
2876 /* Disable Interference Mitigation. */
2877 if (phy->ops->interf_mitigation)
2878 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2879
2880 /* Select the antennae */
2881 if (phy->ops->set_rx_antenna)
2882 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2883 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2884
2885 if (phy->type == B43_PHYTYPE_B) {
2886 value16 = b43_read16(dev, 0x005E);
2887 value16 |= 0x0004;
2888 b43_write16(dev, 0x005E, value16);
2889 }
2890 b43_write32(dev, 0x0100, 0x01000000);
2891 if (dev->dev->id.revision < 5)
2892 b43_write32(dev, 0x010C, 0x01000000);
2893
2894 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2895 & ~B43_MACCTL_INFRA);
2896 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2897 | B43_MACCTL_INFRA);
2898
2899 /* Probe Response Timeout value */
2900 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2901 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2902
2903 /* Initially set the wireless operation mode. */
2904 b43_adjust_opmode(dev);
2905
2906 if (dev->dev->id.revision < 3) {
2907 b43_write16(dev, 0x060E, 0x0000);
2908 b43_write16(dev, 0x0610, 0x8000);
2909 b43_write16(dev, 0x0604, 0x0000);
2910 b43_write16(dev, 0x0606, 0x0200);
2911 } else {
2912 b43_write32(dev, 0x0188, 0x80000000);
2913 b43_write32(dev, 0x018C, 0x02000000);
2914 }
2915 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2916 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2917 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2918 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2919 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2920 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2921 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2922
2923 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2924 value32 |= 0x00100000;
2925 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2926
2927 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2928 dev->dev->bus->chipco.fast_pwrup_delay);
2929
2930 err = 0;
2931 b43dbg(dev->wl, "Chip initialized\n");
2932 out:
2933 return err;
2934
2935 err_gpio_clean:
2936 b43_gpio_cleanup(dev);
2937 return err;
2938 }
2939
b43_periodic_every60sec(struct b43_wldev * dev)2940 static void b43_periodic_every60sec(struct b43_wldev *dev)
2941 {
2942 const struct b43_phy_operations *ops = dev->phy.ops;
2943
2944 if (ops->pwork_60sec)
2945 ops->pwork_60sec(dev);
2946
2947 /* Force check the TX power emission now. */
2948 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2949 }
2950
b43_periodic_every30sec(struct b43_wldev * dev)2951 static void b43_periodic_every30sec(struct b43_wldev *dev)
2952 {
2953 /* Update device statistics. */
2954 b43_calculate_link_quality(dev);
2955 }
2956
b43_periodic_every15sec(struct b43_wldev * dev)2957 static void b43_periodic_every15sec(struct b43_wldev *dev)
2958 {
2959 struct b43_phy *phy = &dev->phy;
2960 u16 wdr;
2961
2962 if (dev->fw.opensource) {
2963 /* Check if the firmware is still alive.
2964 * It will reset the watchdog counter to 0 in its idle loop. */
2965 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2966 if (unlikely(wdr)) {
2967 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2968 b43_controller_restart(dev, "Firmware watchdog");
2969 return;
2970 } else {
2971 b43_shm_write16(dev, B43_SHM_SCRATCH,
2972 B43_WATCHDOG_REG, 1);
2973 }
2974 }
2975
2976 if (phy->ops->pwork_15sec)
2977 phy->ops->pwork_15sec(dev);
2978
2979 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2980 wmb();
2981
2982 #if B43_DEBUG
2983 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
2984 unsigned int i;
2985
2986 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
2987 dev->irq_count / 15,
2988 dev->tx_count / 15,
2989 dev->rx_count / 15);
2990 dev->irq_count = 0;
2991 dev->tx_count = 0;
2992 dev->rx_count = 0;
2993 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
2994 if (dev->irq_bit_count[i]) {
2995 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
2996 dev->irq_bit_count[i] / 15, i, (1 << i));
2997 dev->irq_bit_count[i] = 0;
2998 }
2999 }
3000 }
3001 #endif
3002 }
3003
do_periodic_work(struct b43_wldev * dev)3004 static void do_periodic_work(struct b43_wldev *dev)
3005 {
3006 unsigned int state;
3007
3008 state = dev->periodic_state;
3009 if (state % 4 == 0)
3010 b43_periodic_every60sec(dev);
3011 if (state % 2 == 0)
3012 b43_periodic_every30sec(dev);
3013 b43_periodic_every15sec(dev);
3014 }
3015
3016 /* Periodic work locking policy:
3017 * The whole periodic work handler is protected by
3018 * wl->mutex. If another lock is needed somewhere in the
3019 * pwork callchain, it's acquired in-place, where it's needed.
3020 */
b43_periodic_work_handler(struct work_struct * work)3021 static void b43_periodic_work_handler(struct work_struct *work)
3022 {
3023 struct b43_wldev *dev = container_of(work, struct b43_wldev,
3024 periodic_work.work);
3025 struct b43_wl *wl = dev->wl;
3026 unsigned long delay;
3027
3028 mutex_lock(&wl->mutex);
3029
3030 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
3031 goto out;
3032 if (b43_debug(dev, B43_DBG_PWORK_STOP))
3033 goto out_requeue;
3034
3035 do_periodic_work(dev);
3036
3037 dev->periodic_state++;
3038 out_requeue:
3039 if (b43_debug(dev, B43_DBG_PWORK_FAST))
3040 delay = msecs_to_jiffies(50);
3041 else
3042 delay = round_jiffies_relative(HZ * 15);
3043 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
3044 out:
3045 mutex_unlock(&wl->mutex);
3046 }
3047
b43_periodic_tasks_setup(struct b43_wldev * dev)3048 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3049 {
3050 struct delayed_work *work = &dev->periodic_work;
3051
3052 dev->periodic_state = 0;
3053 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3054 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3055 }
3056
3057 /* Check if communication with the device works correctly. */
b43_validate_chipaccess(struct b43_wldev * dev)3058 static int b43_validate_chipaccess(struct b43_wldev *dev)
3059 {
3060 u32 v, backup0, backup4;
3061
3062 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3063 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3064
3065 /* Check for read/write and endianness problems. */
3066 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3067 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3068 goto error;
3069 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3070 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3071 goto error;
3072
3073 /* Check if unaligned 32bit SHM_SHARED access works properly.
3074 * However, don't bail out on failure, because it's noncritical. */
3075 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3076 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3077 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3078 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3079 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3080 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3081 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3082 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3083 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3084 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3085 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3086 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3087
3088 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3089 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3090
3091 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
3092 /* The 32bit register shadows the two 16bit registers
3093 * with update sideeffects. Validate this. */
3094 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3095 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3096 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3097 goto error;
3098 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3099 goto error;
3100 }
3101 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3102
3103 v = b43_read32(dev, B43_MMIO_MACCTL);
3104 v |= B43_MACCTL_GMODE;
3105 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3106 goto error;
3107
3108 return 0;
3109 error:
3110 b43err(dev->wl, "Failed to validate the chipaccess\n");
3111 return -ENODEV;
3112 }
3113
b43_security_init(struct b43_wldev * dev)3114 static void b43_security_init(struct b43_wldev *dev)
3115 {
3116 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3117 /* KTP is a word address, but we address SHM bytewise.
3118 * So multiply by two.
3119 */
3120 dev->ktp *= 2;
3121 /* Number of RCMTA address slots */
3122 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3123 /* Clear the key memory. */
3124 b43_clear_keys(dev);
3125 }
3126
3127 #ifdef CONFIG_B43_HWRNG
b43_rng_read(struct hwrng * rng,u32 * data)3128 static int b43_rng_read(struct hwrng *rng, u32 *data)
3129 {
3130 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3131 struct b43_wldev *dev;
3132 int count = -ENODEV;
3133
3134 mutex_lock(&wl->mutex);
3135 dev = wl->current_dev;
3136 if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3137 *data = b43_read16(dev, B43_MMIO_RNG);
3138 count = sizeof(u16);
3139 }
3140 mutex_unlock(&wl->mutex);
3141
3142 return count;
3143 }
3144 #endif /* CONFIG_B43_HWRNG */
3145
b43_rng_exit(struct b43_wl * wl)3146 static void b43_rng_exit(struct b43_wl *wl)
3147 {
3148 #ifdef CONFIG_B43_HWRNG
3149 if (wl->rng_initialized)
3150 hwrng_unregister(&wl->rng);
3151 #endif /* CONFIG_B43_HWRNG */
3152 }
3153
b43_rng_init(struct b43_wl * wl)3154 static int b43_rng_init(struct b43_wl *wl)
3155 {
3156 int err = 0;
3157
3158 #ifdef CONFIG_B43_HWRNG
3159 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3160 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3161 wl->rng.name = wl->rng_name;
3162 wl->rng.data_read = b43_rng_read;
3163 wl->rng.priv = (unsigned long)wl;
3164 wl->rng_initialized = 1;
3165 err = hwrng_register(&wl->rng);
3166 if (err) {
3167 wl->rng_initialized = 0;
3168 b43err(wl, "Failed to register the random "
3169 "number generator (%d)\n", err);
3170 }
3171 #endif /* CONFIG_B43_HWRNG */
3172
3173 return err;
3174 }
3175
b43_tx_work(struct work_struct * work)3176 static void b43_tx_work(struct work_struct *work)
3177 {
3178 struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3179 struct b43_wldev *dev;
3180 struct sk_buff *skb;
3181 int err = 0;
3182
3183 mutex_lock(&wl->mutex);
3184 dev = wl->current_dev;
3185 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3186 mutex_unlock(&wl->mutex);
3187 return;
3188 }
3189
3190 while (skb_queue_len(&wl->tx_queue)) {
3191 skb = skb_dequeue(&wl->tx_queue);
3192
3193 if (b43_using_pio_transfers(dev))
3194 err = b43_pio_tx(dev, skb);
3195 else
3196 err = b43_dma_tx(dev, skb);
3197 if (unlikely(err))
3198 dev_kfree_skb(skb); /* Drop it */
3199 }
3200
3201 #if B43_DEBUG
3202 dev->tx_count++;
3203 #endif
3204 mutex_unlock(&wl->mutex);
3205 }
3206
b43_op_tx(struct ieee80211_hw * hw,struct sk_buff * skb)3207 static void b43_op_tx(struct ieee80211_hw *hw,
3208 struct sk_buff *skb)
3209 {
3210 struct b43_wl *wl = hw_to_b43_wl(hw);
3211
3212 if (unlikely(skb->len < 2 + 2 + 6)) {
3213 /* Too short, this can't be a valid frame. */
3214 dev_kfree_skb_any(skb);
3215 return;
3216 }
3217 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3218
3219 skb_queue_tail(&wl->tx_queue, skb);
3220 ieee80211_queue_work(wl->hw, &wl->tx_work);
3221 }
3222
b43_qos_params_upload(struct b43_wldev * dev,const struct ieee80211_tx_queue_params * p,u16 shm_offset)3223 static void b43_qos_params_upload(struct b43_wldev *dev,
3224 const struct ieee80211_tx_queue_params *p,
3225 u16 shm_offset)
3226 {
3227 u16 params[B43_NR_QOSPARAMS];
3228 int bslots, tmp;
3229 unsigned int i;
3230
3231 if (!dev->qos_enabled)
3232 return;
3233
3234 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3235
3236 memset(¶ms, 0, sizeof(params));
3237
3238 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3239 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3240 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3241 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3242 params[B43_QOSPARAM_AIFS] = p->aifs;
3243 params[B43_QOSPARAM_BSLOTS] = bslots;
3244 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3245
3246 for (i = 0; i < ARRAY_SIZE(params); i++) {
3247 if (i == B43_QOSPARAM_STATUS) {
3248 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3249 shm_offset + (i * 2));
3250 /* Mark the parameters as updated. */
3251 tmp |= 0x100;
3252 b43_shm_write16(dev, B43_SHM_SHARED,
3253 shm_offset + (i * 2),
3254 tmp);
3255 } else {
3256 b43_shm_write16(dev, B43_SHM_SHARED,
3257 shm_offset + (i * 2),
3258 params[i]);
3259 }
3260 }
3261 }
3262
3263 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3264 static const u16 b43_qos_shm_offsets[] = {
3265 /* [mac80211-queue-nr] = SHM_OFFSET, */
3266 [0] = B43_QOS_VOICE,
3267 [1] = B43_QOS_VIDEO,
3268 [2] = B43_QOS_BESTEFFORT,
3269 [3] = B43_QOS_BACKGROUND,
3270 };
3271
3272 /* Update all QOS parameters in hardware. */
b43_qos_upload_all(struct b43_wldev * dev)3273 static void b43_qos_upload_all(struct b43_wldev *dev)
3274 {
3275 struct b43_wl *wl = dev->wl;
3276 struct b43_qos_params *params;
3277 unsigned int i;
3278
3279 if (!dev->qos_enabled)
3280 return;
3281
3282 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3283 ARRAY_SIZE(wl->qos_params));
3284
3285 b43_mac_suspend(dev);
3286 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3287 params = &(wl->qos_params[i]);
3288 b43_qos_params_upload(dev, &(params->p),
3289 b43_qos_shm_offsets[i]);
3290 }
3291 b43_mac_enable(dev);
3292 }
3293
b43_qos_clear(struct b43_wl * wl)3294 static void b43_qos_clear(struct b43_wl *wl)
3295 {
3296 struct b43_qos_params *params;
3297 unsigned int i;
3298
3299 /* Initialize QoS parameters to sane defaults. */
3300
3301 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3302 ARRAY_SIZE(wl->qos_params));
3303
3304 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3305 params = &(wl->qos_params[i]);
3306
3307 switch (b43_qos_shm_offsets[i]) {
3308 case B43_QOS_VOICE:
3309 params->p.txop = 0;
3310 params->p.aifs = 2;
3311 params->p.cw_min = 0x0001;
3312 params->p.cw_max = 0x0001;
3313 break;
3314 case B43_QOS_VIDEO:
3315 params->p.txop = 0;
3316 params->p.aifs = 2;
3317 params->p.cw_min = 0x0001;
3318 params->p.cw_max = 0x0001;
3319 break;
3320 case B43_QOS_BESTEFFORT:
3321 params->p.txop = 0;
3322 params->p.aifs = 3;
3323 params->p.cw_min = 0x0001;
3324 params->p.cw_max = 0x03FF;
3325 break;
3326 case B43_QOS_BACKGROUND:
3327 params->p.txop = 0;
3328 params->p.aifs = 7;
3329 params->p.cw_min = 0x0001;
3330 params->p.cw_max = 0x03FF;
3331 break;
3332 default:
3333 B43_WARN_ON(1);
3334 }
3335 }
3336 }
3337
3338 /* Initialize the core's QOS capabilities */
b43_qos_init(struct b43_wldev * dev)3339 static void b43_qos_init(struct b43_wldev *dev)
3340 {
3341 if (!dev->qos_enabled) {
3342 /* Disable QOS support. */
3343 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3344 b43_write16(dev, B43_MMIO_IFSCTL,
3345 b43_read16(dev, B43_MMIO_IFSCTL)
3346 & ~B43_MMIO_IFSCTL_USE_EDCF);
3347 b43dbg(dev->wl, "QoS disabled\n");
3348 return;
3349 }
3350
3351 /* Upload the current QOS parameters. */
3352 b43_qos_upload_all(dev);
3353
3354 /* Enable QOS support. */
3355 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3356 b43_write16(dev, B43_MMIO_IFSCTL,
3357 b43_read16(dev, B43_MMIO_IFSCTL)
3358 | B43_MMIO_IFSCTL_USE_EDCF);
3359 b43dbg(dev->wl, "QoS enabled\n");
3360 }
3361
b43_op_conf_tx(struct ieee80211_hw * hw,u16 _queue,const struct ieee80211_tx_queue_params * params)3362 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3363 const struct ieee80211_tx_queue_params *params)
3364 {
3365 struct b43_wl *wl = hw_to_b43_wl(hw);
3366 struct b43_wldev *dev;
3367 unsigned int queue = (unsigned int)_queue;
3368 int err = -ENODEV;
3369
3370 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3371 /* Queue not available or don't support setting
3372 * params on this queue. Return success to not
3373 * confuse mac80211. */
3374 return 0;
3375 }
3376 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3377 ARRAY_SIZE(wl->qos_params));
3378
3379 mutex_lock(&wl->mutex);
3380 dev = wl->current_dev;
3381 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3382 goto out_unlock;
3383
3384 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3385 b43_mac_suspend(dev);
3386 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3387 b43_qos_shm_offsets[queue]);
3388 b43_mac_enable(dev);
3389 err = 0;
3390
3391 out_unlock:
3392 mutex_unlock(&wl->mutex);
3393
3394 return err;
3395 }
3396
b43_op_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)3397 static int b43_op_get_stats(struct ieee80211_hw *hw,
3398 struct ieee80211_low_level_stats *stats)
3399 {
3400 struct b43_wl *wl = hw_to_b43_wl(hw);
3401
3402 mutex_lock(&wl->mutex);
3403 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3404 mutex_unlock(&wl->mutex);
3405
3406 return 0;
3407 }
3408
b43_op_get_tsf(struct ieee80211_hw * hw)3409 static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
3410 {
3411 struct b43_wl *wl = hw_to_b43_wl(hw);
3412 struct b43_wldev *dev;
3413 u64 tsf;
3414
3415 mutex_lock(&wl->mutex);
3416 dev = wl->current_dev;
3417
3418 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3419 b43_tsf_read(dev, &tsf);
3420 else
3421 tsf = 0;
3422
3423 mutex_unlock(&wl->mutex);
3424
3425 return tsf;
3426 }
3427
b43_op_set_tsf(struct ieee80211_hw * hw,u64 tsf)3428 static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3429 {
3430 struct b43_wl *wl = hw_to_b43_wl(hw);
3431 struct b43_wldev *dev;
3432
3433 mutex_lock(&wl->mutex);
3434 dev = wl->current_dev;
3435
3436 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3437 b43_tsf_write(dev, tsf);
3438
3439 mutex_unlock(&wl->mutex);
3440 }
3441
b43_put_phy_into_reset(struct b43_wldev * dev)3442 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3443 {
3444 struct ssb_device *sdev = dev->dev;
3445 u32 tmslow;
3446
3447 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3448 tmslow &= ~B43_TMSLOW_GMODE;
3449 tmslow |= B43_TMSLOW_PHYRESET;
3450 tmslow |= SSB_TMSLOW_FGC;
3451 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3452 msleep(1);
3453
3454 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3455 tmslow &= ~SSB_TMSLOW_FGC;
3456 tmslow |= B43_TMSLOW_PHYRESET;
3457 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3458 msleep(1);
3459 }
3460
band_to_string(enum ieee80211_band band)3461 static const char *band_to_string(enum ieee80211_band band)
3462 {
3463 switch (band) {
3464 case IEEE80211_BAND_5GHZ:
3465 return "5";
3466 case IEEE80211_BAND_2GHZ:
3467 return "2.4";
3468 default:
3469 break;
3470 }
3471 B43_WARN_ON(1);
3472 return "";
3473 }
3474
3475 /* Expects wl->mutex locked */
b43_switch_band(struct b43_wl * wl,struct ieee80211_channel * chan)3476 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3477 {
3478 struct b43_wldev *up_dev = NULL;
3479 struct b43_wldev *down_dev;
3480 struct b43_wldev *d;
3481 int err;
3482 bool uninitialized_var(gmode);
3483 int prev_status;
3484
3485 /* Find a device and PHY which supports the band. */
3486 list_for_each_entry(d, &wl->devlist, list) {
3487 switch (chan->band) {
3488 case IEEE80211_BAND_5GHZ:
3489 if (d->phy.supports_5ghz) {
3490 up_dev = d;
3491 gmode = 0;
3492 }
3493 break;
3494 case IEEE80211_BAND_2GHZ:
3495 if (d->phy.supports_2ghz) {
3496 up_dev = d;
3497 gmode = 1;
3498 }
3499 break;
3500 default:
3501 B43_WARN_ON(1);
3502 return -EINVAL;
3503 }
3504 if (up_dev)
3505 break;
3506 }
3507 if (!up_dev) {
3508 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3509 band_to_string(chan->band));
3510 return -ENODEV;
3511 }
3512 if ((up_dev == wl->current_dev) &&
3513 (!!wl->current_dev->phy.gmode == !!gmode)) {
3514 /* This device is already running. */
3515 return 0;
3516 }
3517 b43dbg(wl, "Switching to %s-GHz band\n",
3518 band_to_string(chan->band));
3519 down_dev = wl->current_dev;
3520
3521 prev_status = b43_status(down_dev);
3522 /* Shutdown the currently running core. */
3523 if (prev_status >= B43_STAT_STARTED)
3524 down_dev = b43_wireless_core_stop(down_dev);
3525 if (prev_status >= B43_STAT_INITIALIZED)
3526 b43_wireless_core_exit(down_dev);
3527
3528 if (down_dev != up_dev) {
3529 /* We switch to a different core, so we put PHY into
3530 * RESET on the old core. */
3531 b43_put_phy_into_reset(down_dev);
3532 }
3533
3534 /* Now start the new core. */
3535 up_dev->phy.gmode = gmode;
3536 if (prev_status >= B43_STAT_INITIALIZED) {
3537 err = b43_wireless_core_init(up_dev);
3538 if (err) {
3539 b43err(wl, "Fatal: Could not initialize device for "
3540 "selected %s-GHz band\n",
3541 band_to_string(chan->band));
3542 goto init_failure;
3543 }
3544 }
3545 if (prev_status >= B43_STAT_STARTED) {
3546 err = b43_wireless_core_start(up_dev);
3547 if (err) {
3548 b43err(wl, "Fatal: Coult not start device for "
3549 "selected %s-GHz band\n",
3550 band_to_string(chan->band));
3551 b43_wireless_core_exit(up_dev);
3552 goto init_failure;
3553 }
3554 }
3555 B43_WARN_ON(b43_status(up_dev) != prev_status);
3556
3557 wl->current_dev = up_dev;
3558
3559 return 0;
3560 init_failure:
3561 /* Whoops, failed to init the new core. No core is operating now. */
3562 wl->current_dev = NULL;
3563 return err;
3564 }
3565
3566 /* Write the short and long frame retry limit values. */
b43_set_retry_limits(struct b43_wldev * dev,unsigned int short_retry,unsigned int long_retry)3567 static void b43_set_retry_limits(struct b43_wldev *dev,
3568 unsigned int short_retry,
3569 unsigned int long_retry)
3570 {
3571 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3572 * the chip-internal counter. */
3573 short_retry = min(short_retry, (unsigned int)0xF);
3574 long_retry = min(long_retry, (unsigned int)0xF);
3575
3576 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3577 short_retry);
3578 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3579 long_retry);
3580 }
3581
b43_op_config(struct ieee80211_hw * hw,u32 changed)3582 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3583 {
3584 struct b43_wl *wl = hw_to_b43_wl(hw);
3585 struct b43_wldev *dev;
3586 struct b43_phy *phy;
3587 struct ieee80211_conf *conf = &hw->conf;
3588 int antenna;
3589 int err = 0;
3590
3591 mutex_lock(&wl->mutex);
3592
3593 /* Switch the band (if necessary). This might change the active core. */
3594 err = b43_switch_band(wl, conf->channel);
3595 if (err)
3596 goto out_unlock_mutex;
3597 dev = wl->current_dev;
3598 phy = &dev->phy;
3599
3600 if (conf_is_ht(conf))
3601 phy->is_40mhz =
3602 (conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf));
3603 else
3604 phy->is_40mhz = false;
3605
3606 b43_mac_suspend(dev);
3607
3608 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3609 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3610 conf->long_frame_max_tx_count);
3611 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3612 if (!changed)
3613 goto out_mac_enable;
3614
3615 /* Switch to the requested channel.
3616 * The firmware takes care of races with the TX handler. */
3617 if (conf->channel->hw_value != phy->channel)
3618 b43_switch_channel(dev, conf->channel->hw_value);
3619
3620 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
3621
3622 /* Adjust the desired TX power level. */
3623 if (conf->power_level != 0) {
3624 if (conf->power_level != phy->desired_txpower) {
3625 phy->desired_txpower = conf->power_level;
3626 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3627 B43_TXPWR_IGNORE_TSSI);
3628 }
3629 }
3630
3631 /* Antennas for RX and management frame TX. */
3632 antenna = B43_ANTENNA_DEFAULT;
3633 b43_mgmtframe_txantenna(dev, antenna);
3634 antenna = B43_ANTENNA_DEFAULT;
3635 if (phy->ops->set_rx_antenna)
3636 phy->ops->set_rx_antenna(dev, antenna);
3637
3638 if (wl->radio_enabled != phy->radio_on) {
3639 if (wl->radio_enabled) {
3640 b43_software_rfkill(dev, false);
3641 b43info(dev->wl, "Radio turned on by software\n");
3642 if (!dev->radio_hw_enable) {
3643 b43info(dev->wl, "The hardware RF-kill button "
3644 "still turns the radio physically off. "
3645 "Press the button to turn it on.\n");
3646 }
3647 } else {
3648 b43_software_rfkill(dev, true);
3649 b43info(dev->wl, "Radio turned off by software\n");
3650 }
3651 }
3652
3653 out_mac_enable:
3654 b43_mac_enable(dev);
3655 out_unlock_mutex:
3656 mutex_unlock(&wl->mutex);
3657
3658 return err;
3659 }
3660
b43_update_basic_rates(struct b43_wldev * dev,u32 brates)3661 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3662 {
3663 struct ieee80211_supported_band *sband =
3664 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3665 struct ieee80211_rate *rate;
3666 int i;
3667 u16 basic, direct, offset, basic_offset, rateptr;
3668
3669 for (i = 0; i < sband->n_bitrates; i++) {
3670 rate = &sband->bitrates[i];
3671
3672 if (b43_is_cck_rate(rate->hw_value)) {
3673 direct = B43_SHM_SH_CCKDIRECT;
3674 basic = B43_SHM_SH_CCKBASIC;
3675 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3676 offset &= 0xF;
3677 } else {
3678 direct = B43_SHM_SH_OFDMDIRECT;
3679 basic = B43_SHM_SH_OFDMBASIC;
3680 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3681 offset &= 0xF;
3682 }
3683
3684 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3685
3686 if (b43_is_cck_rate(rate->hw_value)) {
3687 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3688 basic_offset &= 0xF;
3689 } else {
3690 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3691 basic_offset &= 0xF;
3692 }
3693
3694 /*
3695 * Get the pointer that we need to point to
3696 * from the direct map
3697 */
3698 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3699 direct + 2 * basic_offset);
3700 /* and write it to the basic map */
3701 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3702 rateptr);
3703 }
3704 }
3705
b43_op_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * conf,u32 changed)3706 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3707 struct ieee80211_vif *vif,
3708 struct ieee80211_bss_conf *conf,
3709 u32 changed)
3710 {
3711 struct b43_wl *wl = hw_to_b43_wl(hw);
3712 struct b43_wldev *dev;
3713
3714 mutex_lock(&wl->mutex);
3715
3716 dev = wl->current_dev;
3717 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3718 goto out_unlock_mutex;
3719
3720 B43_WARN_ON(wl->vif != vif);
3721
3722 if (changed & BSS_CHANGED_BSSID) {
3723 if (conf->bssid)
3724 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3725 else
3726 memset(wl->bssid, 0, ETH_ALEN);
3727 }
3728
3729 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3730 if (changed & BSS_CHANGED_BEACON &&
3731 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3732 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3733 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3734 b43_update_templates(wl);
3735
3736 if (changed & BSS_CHANGED_BSSID)
3737 b43_write_mac_bssid_templates(dev);
3738 }
3739
3740 b43_mac_suspend(dev);
3741
3742 /* Update templates for AP/mesh mode. */
3743 if (changed & BSS_CHANGED_BEACON_INT &&
3744 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3745 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3746 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3747 b43_set_beacon_int(dev, conf->beacon_int);
3748
3749 if (changed & BSS_CHANGED_BASIC_RATES)
3750 b43_update_basic_rates(dev, conf->basic_rates);
3751
3752 if (changed & BSS_CHANGED_ERP_SLOT) {
3753 if (conf->use_short_slot)
3754 b43_short_slot_timing_enable(dev);
3755 else
3756 b43_short_slot_timing_disable(dev);
3757 }
3758
3759 b43_mac_enable(dev);
3760 out_unlock_mutex:
3761 mutex_unlock(&wl->mutex);
3762 }
3763
b43_op_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)3764 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3765 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3766 struct ieee80211_key_conf *key)
3767 {
3768 struct b43_wl *wl = hw_to_b43_wl(hw);
3769 struct b43_wldev *dev;
3770 u8 algorithm;
3771 u8 index;
3772 int err;
3773 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
3774
3775 if (modparam_nohwcrypt)
3776 return -ENOSPC; /* User disabled HW-crypto */
3777
3778 mutex_lock(&wl->mutex);
3779
3780 dev = wl->current_dev;
3781 err = -ENODEV;
3782 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3783 goto out_unlock;
3784
3785 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
3786 /* We don't have firmware for the crypto engine.
3787 * Must use software-crypto. */
3788 err = -EOPNOTSUPP;
3789 goto out_unlock;
3790 }
3791
3792 err = -EINVAL;
3793 switch (key->cipher) {
3794 case WLAN_CIPHER_SUITE_WEP40:
3795 algorithm = B43_SEC_ALGO_WEP40;
3796 break;
3797 case WLAN_CIPHER_SUITE_WEP104:
3798 algorithm = B43_SEC_ALGO_WEP104;
3799 break;
3800 case WLAN_CIPHER_SUITE_TKIP:
3801 algorithm = B43_SEC_ALGO_TKIP;
3802 break;
3803 case WLAN_CIPHER_SUITE_CCMP:
3804 algorithm = B43_SEC_ALGO_AES;
3805 break;
3806 default:
3807 B43_WARN_ON(1);
3808 goto out_unlock;
3809 }
3810 index = (u8) (key->keyidx);
3811 if (index > 3)
3812 goto out_unlock;
3813
3814 switch (cmd) {
3815 case SET_KEY:
3816 if (algorithm == B43_SEC_ALGO_TKIP &&
3817 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3818 !modparam_hwtkip)) {
3819 /* We support only pairwise key */
3820 err = -EOPNOTSUPP;
3821 goto out_unlock;
3822 }
3823
3824 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3825 if (WARN_ON(!sta)) {
3826 err = -EOPNOTSUPP;
3827 goto out_unlock;
3828 }
3829 /* Pairwise key with an assigned MAC address. */
3830 err = b43_key_write(dev, -1, algorithm,
3831 key->key, key->keylen,
3832 sta->addr, key);
3833 } else {
3834 /* Group key */
3835 err = b43_key_write(dev, index, algorithm,
3836 key->key, key->keylen, NULL, key);
3837 }
3838 if (err)
3839 goto out_unlock;
3840
3841 if (algorithm == B43_SEC_ALGO_WEP40 ||
3842 algorithm == B43_SEC_ALGO_WEP104) {
3843 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3844 } else {
3845 b43_hf_write(dev,
3846 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3847 }
3848 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3849 if (algorithm == B43_SEC_ALGO_TKIP)
3850 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3851 break;
3852 case DISABLE_KEY: {
3853 err = b43_key_clear(dev, key->hw_key_idx);
3854 if (err)
3855 goto out_unlock;
3856 break;
3857 }
3858 default:
3859 B43_WARN_ON(1);
3860 }
3861
3862 out_unlock:
3863 if (!err) {
3864 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3865 "mac: %pM\n",
3866 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3867 sta ? sta->addr : bcast_addr);
3868 b43_dump_keymemory(dev);
3869 }
3870 mutex_unlock(&wl->mutex);
3871
3872 return err;
3873 }
3874
b43_op_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * fflags,u64 multicast)3875 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3876 unsigned int changed, unsigned int *fflags,
3877 u64 multicast)
3878 {
3879 struct b43_wl *wl = hw_to_b43_wl(hw);
3880 struct b43_wldev *dev;
3881
3882 mutex_lock(&wl->mutex);
3883 dev = wl->current_dev;
3884 if (!dev) {
3885 *fflags = 0;
3886 goto out_unlock;
3887 }
3888
3889 *fflags &= FIF_PROMISC_IN_BSS |
3890 FIF_ALLMULTI |
3891 FIF_FCSFAIL |
3892 FIF_PLCPFAIL |
3893 FIF_CONTROL |
3894 FIF_OTHER_BSS |
3895 FIF_BCN_PRBRESP_PROMISC;
3896
3897 changed &= FIF_PROMISC_IN_BSS |
3898 FIF_ALLMULTI |
3899 FIF_FCSFAIL |
3900 FIF_PLCPFAIL |
3901 FIF_CONTROL |
3902 FIF_OTHER_BSS |
3903 FIF_BCN_PRBRESP_PROMISC;
3904
3905 wl->filter_flags = *fflags;
3906
3907 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3908 b43_adjust_opmode(dev);
3909
3910 out_unlock:
3911 mutex_unlock(&wl->mutex);
3912 }
3913
3914 /* Locking: wl->mutex
3915 * Returns the current dev. This might be different from the passed in dev,
3916 * because the core might be gone away while we unlocked the mutex. */
b43_wireless_core_stop(struct b43_wldev * dev)3917 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
3918 {
3919 struct b43_wl *wl = dev->wl;
3920 struct b43_wldev *orig_dev;
3921 u32 mask;
3922
3923 redo:
3924 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3925 return dev;
3926
3927 /* Cancel work. Unlock to avoid deadlocks. */
3928 mutex_unlock(&wl->mutex);
3929 cancel_delayed_work_sync(&dev->periodic_work);
3930 cancel_work_sync(&wl->tx_work);
3931 mutex_lock(&wl->mutex);
3932 dev = wl->current_dev;
3933 if (!dev || b43_status(dev) < B43_STAT_STARTED) {
3934 /* Whoops, aliens ate up the device while we were unlocked. */
3935 return dev;
3936 }
3937
3938 /* Disable interrupts on the device. */
3939 b43_set_status(dev, B43_STAT_INITIALIZED);
3940 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3941 /* wl->mutex is locked. That is enough. */
3942 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3943 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3944 } else {
3945 spin_lock_irq(&wl->hardirq_lock);
3946 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3947 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3948 spin_unlock_irq(&wl->hardirq_lock);
3949 }
3950 /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
3951 orig_dev = dev;
3952 mutex_unlock(&wl->mutex);
3953 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3954 b43_sdio_free_irq(dev);
3955 } else {
3956 synchronize_irq(dev->dev->irq);
3957 free_irq(dev->dev->irq, dev);
3958 }
3959 mutex_lock(&wl->mutex);
3960 dev = wl->current_dev;
3961 if (!dev)
3962 return dev;
3963 if (dev != orig_dev) {
3964 if (b43_status(dev) >= B43_STAT_STARTED)
3965 goto redo;
3966 return dev;
3967 }
3968 mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
3969 B43_WARN_ON(mask != 0xFFFFFFFF && mask);
3970
3971 /* Drain the TX queue */
3972 while (skb_queue_len(&wl->tx_queue))
3973 dev_kfree_skb(skb_dequeue(&wl->tx_queue));
3974
3975 b43_mac_suspend(dev);
3976 b43_leds_exit(dev);
3977 b43dbg(wl, "Wireless interface stopped\n");
3978
3979 return dev;
3980 }
3981
3982 /* Locking: wl->mutex */
b43_wireless_core_start(struct b43_wldev * dev)3983 static int b43_wireless_core_start(struct b43_wldev *dev)
3984 {
3985 int err;
3986
3987 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3988
3989 drain_txstatus_queue(dev);
3990 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3991 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
3992 if (err) {
3993 b43err(dev->wl, "Cannot request SDIO IRQ\n");
3994 goto out;
3995 }
3996 } else {
3997 err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
3998 b43_interrupt_thread_handler,
3999 IRQF_SHARED, KBUILD_MODNAME, dev);
4000 if (err) {
4001 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
4002 goto out;
4003 }
4004 }
4005
4006 /* We are ready to run. */
4007 ieee80211_wake_queues(dev->wl->hw);
4008 b43_set_status(dev, B43_STAT_STARTED);
4009
4010 /* Start data flow (TX/RX). */
4011 b43_mac_enable(dev);
4012 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
4013
4014 /* Start maintenance work */
4015 b43_periodic_tasks_setup(dev);
4016
4017 b43_leds_init(dev);
4018
4019 b43dbg(dev->wl, "Wireless interface started\n");
4020 out:
4021 return err;
4022 }
4023
4024 /* Get PHY and RADIO versioning numbers */
b43_phy_versioning(struct b43_wldev * dev)4025 static int b43_phy_versioning(struct b43_wldev *dev)
4026 {
4027 struct b43_phy *phy = &dev->phy;
4028 u32 tmp;
4029 u8 analog_type;
4030 u8 phy_type;
4031 u8 phy_rev;
4032 u16 radio_manuf;
4033 u16 radio_ver;
4034 u16 radio_rev;
4035 int unsupported = 0;
4036
4037 /* Get PHY versioning */
4038 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4039 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4040 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4041 phy_rev = (tmp & B43_PHYVER_VERSION);
4042 switch (phy_type) {
4043 case B43_PHYTYPE_A:
4044 if (phy_rev >= 4)
4045 unsupported = 1;
4046 break;
4047 case B43_PHYTYPE_B:
4048 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
4049 && phy_rev != 7)
4050 unsupported = 1;
4051 break;
4052 case B43_PHYTYPE_G:
4053 if (phy_rev > 9)
4054 unsupported = 1;
4055 break;
4056 #ifdef CONFIG_B43_PHY_N
4057 case B43_PHYTYPE_N:
4058 if (phy_rev > 9)
4059 unsupported = 1;
4060 break;
4061 #endif
4062 #ifdef CONFIG_B43_PHY_LP
4063 case B43_PHYTYPE_LP:
4064 if (phy_rev > 2)
4065 unsupported = 1;
4066 break;
4067 #endif
4068 default:
4069 unsupported = 1;
4070 };
4071 if (unsupported) {
4072 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
4073 "(Analog %u, Type %u, Revision %u)\n",
4074 analog_type, phy_type, phy_rev);
4075 return -EOPNOTSUPP;
4076 }
4077 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
4078 analog_type, phy_type, phy_rev);
4079
4080 /* Get RADIO versioning */
4081 if (dev->dev->bus->chip_id == 0x4317) {
4082 if (dev->dev->bus->chip_rev == 0)
4083 tmp = 0x3205017F;
4084 else if (dev->dev->bus->chip_rev == 1)
4085 tmp = 0x4205017F;
4086 else
4087 tmp = 0x5205017F;
4088 } else {
4089 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4090 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4091 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4092 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
4093 }
4094 radio_manuf = (tmp & 0x00000FFF);
4095 radio_ver = (tmp & 0x0FFFF000) >> 12;
4096 radio_rev = (tmp & 0xF0000000) >> 28;
4097 if (radio_manuf != 0x17F /* Broadcom */)
4098 unsupported = 1;
4099 switch (phy_type) {
4100 case B43_PHYTYPE_A:
4101 if (radio_ver != 0x2060)
4102 unsupported = 1;
4103 if (radio_rev != 1)
4104 unsupported = 1;
4105 if (radio_manuf != 0x17F)
4106 unsupported = 1;
4107 break;
4108 case B43_PHYTYPE_B:
4109 if ((radio_ver & 0xFFF0) != 0x2050)
4110 unsupported = 1;
4111 break;
4112 case B43_PHYTYPE_G:
4113 if (radio_ver != 0x2050)
4114 unsupported = 1;
4115 break;
4116 case B43_PHYTYPE_N:
4117 if (radio_ver != 0x2055 && radio_ver != 0x2056)
4118 unsupported = 1;
4119 break;
4120 case B43_PHYTYPE_LP:
4121 if (radio_ver != 0x2062 && radio_ver != 0x2063)
4122 unsupported = 1;
4123 break;
4124 default:
4125 B43_WARN_ON(1);
4126 }
4127 if (unsupported) {
4128 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
4129 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
4130 radio_manuf, radio_ver, radio_rev);
4131 return -EOPNOTSUPP;
4132 }
4133 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
4134 radio_manuf, radio_ver, radio_rev);
4135
4136 phy->radio_manuf = radio_manuf;
4137 phy->radio_ver = radio_ver;
4138 phy->radio_rev = radio_rev;
4139
4140 phy->analog = analog_type;
4141 phy->type = phy_type;
4142 phy->rev = phy_rev;
4143
4144 return 0;
4145 }
4146
setup_struct_phy_for_init(struct b43_wldev * dev,struct b43_phy * phy)4147 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4148 struct b43_phy *phy)
4149 {
4150 phy->hardware_power_control = !!modparam_hwpctl;
4151 phy->next_txpwr_check_time = jiffies;
4152 /* PHY TX errors counter. */
4153 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4154
4155 #if B43_DEBUG
4156 phy->phy_locked = 0;
4157 phy->radio_locked = 0;
4158 #endif
4159 }
4160
setup_struct_wldev_for_init(struct b43_wldev * dev)4161 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4162 {
4163 dev->dfq_valid = 0;
4164
4165 /* Assume the radio is enabled. If it's not enabled, the state will
4166 * immediately get fixed on the first periodic work run. */
4167 dev->radio_hw_enable = 1;
4168
4169 /* Stats */
4170 memset(&dev->stats, 0, sizeof(dev->stats));
4171
4172 setup_struct_phy_for_init(dev, &dev->phy);
4173
4174 /* IRQ related flags */
4175 dev->irq_reason = 0;
4176 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4177 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4178 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4179 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4180
4181 dev->mac_suspended = 1;
4182
4183 /* Noise calculation context */
4184 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4185 }
4186
b43_bluetooth_coext_enable(struct b43_wldev * dev)4187 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4188 {
4189 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
4190 u64 hf;
4191
4192 if (!modparam_btcoex)
4193 return;
4194 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4195 return;
4196 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4197 return;
4198
4199 hf = b43_hf_read(dev);
4200 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4201 hf |= B43_HF_BTCOEXALT;
4202 else
4203 hf |= B43_HF_BTCOEX;
4204 b43_hf_write(dev, hf);
4205 }
4206
b43_bluetooth_coext_disable(struct b43_wldev * dev)4207 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4208 {
4209 if (!modparam_btcoex)
4210 return;
4211 //TODO
4212 }
4213
b43_imcfglo_timeouts_workaround(struct b43_wldev * dev)4214 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4215 {
4216 #ifdef CONFIG_SSB_DRIVER_PCICORE
4217 struct ssb_bus *bus = dev->dev->bus;
4218 u32 tmp;
4219
4220 if (bus->pcicore.dev &&
4221 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
4222 bus->pcicore.dev->id.revision <= 5) {
4223 /* IMCFGLO timeouts workaround. */
4224 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
4225 switch (bus->bustype) {
4226 case SSB_BUSTYPE_PCI:
4227 case SSB_BUSTYPE_PCMCIA:
4228 tmp &= ~SSB_IMCFGLO_REQTO;
4229 tmp &= ~SSB_IMCFGLO_SERTO;
4230 tmp |= 0x32;
4231 break;
4232 case SSB_BUSTYPE_SSB:
4233 tmp &= ~SSB_IMCFGLO_REQTO;
4234 tmp &= ~SSB_IMCFGLO_SERTO;
4235 tmp |= 0x53;
4236 break;
4237 default:
4238 break;
4239 }
4240 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
4241 }
4242 #endif /* CONFIG_SSB_DRIVER_PCICORE */
4243 }
4244
b43_set_synth_pu_delay(struct b43_wldev * dev,bool idle)4245 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4246 {
4247 u16 pu_delay;
4248
4249 /* The time value is in microseconds. */
4250 if (dev->phy.type == B43_PHYTYPE_A)
4251 pu_delay = 3700;
4252 else
4253 pu_delay = 1050;
4254 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4255 pu_delay = 500;
4256 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4257 pu_delay = max(pu_delay, (u16)2400);
4258
4259 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4260 }
4261
4262 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
b43_set_pretbtt(struct b43_wldev * dev)4263 static void b43_set_pretbtt(struct b43_wldev *dev)
4264 {
4265 u16 pretbtt;
4266
4267 /* The time value is in microseconds. */
4268 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4269 pretbtt = 2;
4270 } else {
4271 if (dev->phy.type == B43_PHYTYPE_A)
4272 pretbtt = 120;
4273 else
4274 pretbtt = 250;
4275 }
4276 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4277 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4278 }
4279
4280 /* Shutdown a wireless core */
4281 /* Locking: wl->mutex */
b43_wireless_core_exit(struct b43_wldev * dev)4282 static void b43_wireless_core_exit(struct b43_wldev *dev)
4283 {
4284 u32 macctl;
4285
4286 B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4287 if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4288 return;
4289
4290 /* Unregister HW RNG driver */
4291 b43_rng_exit(dev->wl);
4292
4293 b43_set_status(dev, B43_STAT_UNINIT);
4294
4295 /* Stop the microcode PSM. */
4296 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4297 macctl &= ~B43_MACCTL_PSM_RUN;
4298 macctl |= B43_MACCTL_PSM_JMP0;
4299 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4300
4301 b43_dma_free(dev);
4302 b43_pio_free(dev);
4303 b43_chip_exit(dev);
4304 dev->phy.ops->switch_analog(dev, 0);
4305 if (dev->wl->current_beacon) {
4306 dev_kfree_skb_any(dev->wl->current_beacon);
4307 dev->wl->current_beacon = NULL;
4308 }
4309
4310 ssb_device_disable(dev->dev, 0);
4311 ssb_bus_may_powerdown(dev->dev->bus);
4312 }
4313
4314 /* Initialize a wireless core */
b43_wireless_core_init(struct b43_wldev * dev)4315 static int b43_wireless_core_init(struct b43_wldev *dev)
4316 {
4317 struct ssb_bus *bus = dev->dev->bus;
4318 struct ssb_sprom *sprom = &bus->sprom;
4319 struct b43_phy *phy = &dev->phy;
4320 int err;
4321 u64 hf;
4322 u32 tmp;
4323
4324 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4325
4326 err = ssb_bus_powerup(bus, 0);
4327 if (err)
4328 goto out;
4329 if (!ssb_device_is_enabled(dev->dev)) {
4330 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4331 b43_wireless_core_reset(dev, tmp);
4332 }
4333
4334 /* Reset all data structures. */
4335 setup_struct_wldev_for_init(dev);
4336 phy->ops->prepare_structs(dev);
4337
4338 /* Enable IRQ routing to this device. */
4339 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4340
4341 b43_imcfglo_timeouts_workaround(dev);
4342 b43_bluetooth_coext_disable(dev);
4343 if (phy->ops->prepare_hardware) {
4344 err = phy->ops->prepare_hardware(dev);
4345 if (err)
4346 goto err_busdown;
4347 }
4348 err = b43_chip_init(dev);
4349 if (err)
4350 goto err_busdown;
4351 b43_shm_write16(dev, B43_SHM_SHARED,
4352 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4353 hf = b43_hf_read(dev);
4354 if (phy->type == B43_PHYTYPE_G) {
4355 hf |= B43_HF_SYMW;
4356 if (phy->rev == 1)
4357 hf |= B43_HF_GDCW;
4358 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4359 hf |= B43_HF_OFDMPABOOST;
4360 }
4361 if (phy->radio_ver == 0x2050) {
4362 if (phy->radio_rev == 6)
4363 hf |= B43_HF_4318TSSI;
4364 if (phy->radio_rev < 6)
4365 hf |= B43_HF_VCORECALC;
4366 }
4367 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4368 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4369 #ifdef CONFIG_SSB_DRIVER_PCICORE
4370 if ((bus->bustype == SSB_BUSTYPE_PCI) &&
4371 (bus->pcicore.dev->id.revision <= 10))
4372 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4373 #endif
4374 hf &= ~B43_HF_SKCFPUP;
4375 b43_hf_write(dev, hf);
4376
4377 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4378 B43_DEFAULT_LONG_RETRY_LIMIT);
4379 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4380 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4381
4382 /* Disable sending probe responses from firmware.
4383 * Setting the MaxTime to one usec will always trigger
4384 * a timeout, so we never send any probe resp.
4385 * A timeout of zero is infinite. */
4386 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4387
4388 b43_rate_memory_init(dev);
4389 b43_set_phytxctl_defaults(dev);
4390
4391 /* Minimum Contention Window */
4392 if (phy->type == B43_PHYTYPE_B)
4393 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4394 else
4395 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4396 /* Maximum Contention Window */
4397 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4398
4399 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) ||
4400 (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) ||
4401 dev->use_pio) {
4402 dev->__using_pio_transfers = 1;
4403 err = b43_pio_init(dev);
4404 } else {
4405 dev->__using_pio_transfers = 0;
4406 err = b43_dma_init(dev);
4407 }
4408 if (err)
4409 goto err_chip_exit;
4410 b43_qos_init(dev);
4411 b43_set_synth_pu_delay(dev, 1);
4412 b43_bluetooth_coext_enable(dev);
4413
4414 ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4415 b43_upload_card_macaddress(dev);
4416 b43_security_init(dev);
4417
4418 ieee80211_wake_queues(dev->wl->hw);
4419
4420 b43_set_status(dev, B43_STAT_INITIALIZED);
4421
4422 /* Register HW RNG driver */
4423 b43_rng_init(dev->wl);
4424
4425 out:
4426 return err;
4427
4428 err_chip_exit:
4429 b43_chip_exit(dev);
4430 err_busdown:
4431 ssb_bus_may_powerdown(bus);
4432 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4433 return err;
4434 }
4435
b43_op_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4436 static int b43_op_add_interface(struct ieee80211_hw *hw,
4437 struct ieee80211_vif *vif)
4438 {
4439 struct b43_wl *wl = hw_to_b43_wl(hw);
4440 struct b43_wldev *dev;
4441 int err = -EOPNOTSUPP;
4442
4443 /* TODO: allow WDS/AP devices to coexist */
4444
4445 if (vif->type != NL80211_IFTYPE_AP &&
4446 vif->type != NL80211_IFTYPE_MESH_POINT &&
4447 vif->type != NL80211_IFTYPE_STATION &&
4448 vif->type != NL80211_IFTYPE_WDS &&
4449 vif->type != NL80211_IFTYPE_ADHOC)
4450 return -EOPNOTSUPP;
4451
4452 mutex_lock(&wl->mutex);
4453 if (wl->operating)
4454 goto out_mutex_unlock;
4455
4456 b43dbg(wl, "Adding Interface type %d\n", vif->type);
4457
4458 dev = wl->current_dev;
4459 wl->operating = 1;
4460 wl->vif = vif;
4461 wl->if_type = vif->type;
4462 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
4463
4464 b43_adjust_opmode(dev);
4465 b43_set_pretbtt(dev);
4466 b43_set_synth_pu_delay(dev, 0);
4467 b43_upload_card_macaddress(dev);
4468
4469 err = 0;
4470 out_mutex_unlock:
4471 mutex_unlock(&wl->mutex);
4472
4473 return err;
4474 }
4475
b43_op_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4476 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4477 struct ieee80211_vif *vif)
4478 {
4479 struct b43_wl *wl = hw_to_b43_wl(hw);
4480 struct b43_wldev *dev = wl->current_dev;
4481
4482 b43dbg(wl, "Removing Interface type %d\n", vif->type);
4483
4484 mutex_lock(&wl->mutex);
4485
4486 B43_WARN_ON(!wl->operating);
4487 B43_WARN_ON(wl->vif != vif);
4488 wl->vif = NULL;
4489
4490 wl->operating = 0;
4491
4492 b43_adjust_opmode(dev);
4493 memset(wl->mac_addr, 0, ETH_ALEN);
4494 b43_upload_card_macaddress(dev);
4495
4496 mutex_unlock(&wl->mutex);
4497 }
4498
b43_op_start(struct ieee80211_hw * hw)4499 static int b43_op_start(struct ieee80211_hw *hw)
4500 {
4501 struct b43_wl *wl = hw_to_b43_wl(hw);
4502 struct b43_wldev *dev = wl->current_dev;
4503 int did_init = 0;
4504 int err = 0;
4505
4506 /* Kill all old instance specific information to make sure
4507 * the card won't use it in the short timeframe between start
4508 * and mac80211 reconfiguring it. */
4509 memset(wl->bssid, 0, ETH_ALEN);
4510 memset(wl->mac_addr, 0, ETH_ALEN);
4511 wl->filter_flags = 0;
4512 wl->radiotap_enabled = 0;
4513 b43_qos_clear(wl);
4514 wl->beacon0_uploaded = 0;
4515 wl->beacon1_uploaded = 0;
4516 wl->beacon_templates_virgin = 1;
4517 wl->radio_enabled = 1;
4518
4519 mutex_lock(&wl->mutex);
4520
4521 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4522 err = b43_wireless_core_init(dev);
4523 if (err)
4524 goto out_mutex_unlock;
4525 did_init = 1;
4526 }
4527
4528 if (b43_status(dev) < B43_STAT_STARTED) {
4529 err = b43_wireless_core_start(dev);
4530 if (err) {
4531 if (did_init)
4532 b43_wireless_core_exit(dev);
4533 goto out_mutex_unlock;
4534 }
4535 }
4536
4537 /* XXX: only do if device doesn't support rfkill irq */
4538 wiphy_rfkill_start_polling(hw->wiphy);
4539
4540 out_mutex_unlock:
4541 mutex_unlock(&wl->mutex);
4542
4543 return err;
4544 }
4545
b43_op_stop(struct ieee80211_hw * hw)4546 static void b43_op_stop(struct ieee80211_hw *hw)
4547 {
4548 struct b43_wl *wl = hw_to_b43_wl(hw);
4549 struct b43_wldev *dev = wl->current_dev;
4550
4551 cancel_work_sync(&(wl->beacon_update_trigger));
4552
4553 mutex_lock(&wl->mutex);
4554 if (b43_status(dev) >= B43_STAT_STARTED) {
4555 dev = b43_wireless_core_stop(dev);
4556 if (!dev)
4557 goto out_unlock;
4558 }
4559 b43_wireless_core_exit(dev);
4560 wl->radio_enabled = 0;
4561
4562 out_unlock:
4563 mutex_unlock(&wl->mutex);
4564
4565 cancel_work_sync(&(wl->txpower_adjust_work));
4566 }
4567
b43_op_beacon_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)4568 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4569 struct ieee80211_sta *sta, bool set)
4570 {
4571 struct b43_wl *wl = hw_to_b43_wl(hw);
4572
4573 /* FIXME: add locking */
4574 b43_update_templates(wl);
4575
4576 return 0;
4577 }
4578
b43_op_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd notify_cmd,struct ieee80211_sta * sta)4579 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4580 struct ieee80211_vif *vif,
4581 enum sta_notify_cmd notify_cmd,
4582 struct ieee80211_sta *sta)
4583 {
4584 struct b43_wl *wl = hw_to_b43_wl(hw);
4585
4586 B43_WARN_ON(!vif || wl->vif != vif);
4587 }
4588
b43_op_sw_scan_start_notifier(struct ieee80211_hw * hw)4589 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4590 {
4591 struct b43_wl *wl = hw_to_b43_wl(hw);
4592 struct b43_wldev *dev;
4593
4594 mutex_lock(&wl->mutex);
4595 dev = wl->current_dev;
4596 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4597 /* Disable CFP update during scan on other channels. */
4598 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4599 }
4600 mutex_unlock(&wl->mutex);
4601 }
4602
b43_op_sw_scan_complete_notifier(struct ieee80211_hw * hw)4603 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4604 {
4605 struct b43_wl *wl = hw_to_b43_wl(hw);
4606 struct b43_wldev *dev;
4607
4608 mutex_lock(&wl->mutex);
4609 dev = wl->current_dev;
4610 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4611 /* Re-enable CFP update. */
4612 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4613 }
4614 mutex_unlock(&wl->mutex);
4615 }
4616
b43_op_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)4617 static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
4618 struct survey_info *survey)
4619 {
4620 struct b43_wl *wl = hw_to_b43_wl(hw);
4621 struct b43_wldev *dev = wl->current_dev;
4622 struct ieee80211_conf *conf = &hw->conf;
4623
4624 if (idx != 0)
4625 return -ENOENT;
4626
4627 survey->channel = conf->channel;
4628 survey->filled = SURVEY_INFO_NOISE_DBM;
4629 survey->noise = dev->stats.link_noise;
4630
4631 return 0;
4632 }
4633
4634 static const struct ieee80211_ops b43_hw_ops = {
4635 .tx = b43_op_tx,
4636 .conf_tx = b43_op_conf_tx,
4637 .add_interface = b43_op_add_interface,
4638 .remove_interface = b43_op_remove_interface,
4639 .config = b43_op_config,
4640 .bss_info_changed = b43_op_bss_info_changed,
4641 .configure_filter = b43_op_configure_filter,
4642 .set_key = b43_op_set_key,
4643 .update_tkip_key = b43_op_update_tkip_key,
4644 .get_stats = b43_op_get_stats,
4645 .get_tsf = b43_op_get_tsf,
4646 .set_tsf = b43_op_set_tsf,
4647 .start = b43_op_start,
4648 .stop = b43_op_stop,
4649 .set_tim = b43_op_beacon_set_tim,
4650 .sta_notify = b43_op_sta_notify,
4651 .sw_scan_start = b43_op_sw_scan_start_notifier,
4652 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
4653 .get_survey = b43_op_get_survey,
4654 .rfkill_poll = b43_rfkill_poll,
4655 };
4656
4657 /* Hard-reset the chip. Do not call this directly.
4658 * Use b43_controller_restart()
4659 */
b43_chip_reset(struct work_struct * work)4660 static void b43_chip_reset(struct work_struct *work)
4661 {
4662 struct b43_wldev *dev =
4663 container_of(work, struct b43_wldev, restart_work);
4664 struct b43_wl *wl = dev->wl;
4665 int err = 0;
4666 int prev_status;
4667
4668 mutex_lock(&wl->mutex);
4669
4670 prev_status = b43_status(dev);
4671 /* Bring the device down... */
4672 if (prev_status >= B43_STAT_STARTED) {
4673 dev = b43_wireless_core_stop(dev);
4674 if (!dev) {
4675 err = -ENODEV;
4676 goto out;
4677 }
4678 }
4679 if (prev_status >= B43_STAT_INITIALIZED)
4680 b43_wireless_core_exit(dev);
4681
4682 /* ...and up again. */
4683 if (prev_status >= B43_STAT_INITIALIZED) {
4684 err = b43_wireless_core_init(dev);
4685 if (err)
4686 goto out;
4687 }
4688 if (prev_status >= B43_STAT_STARTED) {
4689 err = b43_wireless_core_start(dev);
4690 if (err) {
4691 b43_wireless_core_exit(dev);
4692 goto out;
4693 }
4694 }
4695 out:
4696 if (err)
4697 wl->current_dev = NULL; /* Failed to init the dev. */
4698 mutex_unlock(&wl->mutex);
4699 if (err)
4700 b43err(wl, "Controller restart FAILED\n");
4701 else
4702 b43info(wl, "Controller restarted\n");
4703 }
4704
b43_setup_bands(struct b43_wldev * dev,bool have_2ghz_phy,bool have_5ghz_phy)4705 static int b43_setup_bands(struct b43_wldev *dev,
4706 bool have_2ghz_phy, bool have_5ghz_phy)
4707 {
4708 struct ieee80211_hw *hw = dev->wl->hw;
4709
4710 if (have_2ghz_phy)
4711 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4712 if (dev->phy.type == B43_PHYTYPE_N) {
4713 if (have_5ghz_phy)
4714 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4715 } else {
4716 if (have_5ghz_phy)
4717 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4718 }
4719
4720 dev->phy.supports_2ghz = have_2ghz_phy;
4721 dev->phy.supports_5ghz = have_5ghz_phy;
4722
4723 return 0;
4724 }
4725
b43_wireless_core_detach(struct b43_wldev * dev)4726 static void b43_wireless_core_detach(struct b43_wldev *dev)
4727 {
4728 /* We release firmware that late to not be required to re-request
4729 * is all the time when we reinit the core. */
4730 b43_release_firmware(dev);
4731 b43_phy_free(dev);
4732 }
4733
b43_wireless_core_attach(struct b43_wldev * dev)4734 static int b43_wireless_core_attach(struct b43_wldev *dev)
4735 {
4736 struct b43_wl *wl = dev->wl;
4737 struct ssb_bus *bus = dev->dev->bus;
4738 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
4739 int err;
4740 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4741 u32 tmp;
4742
4743 /* Do NOT do any device initialization here.
4744 * Do it in wireless_core_init() instead.
4745 * This function is for gathering basic information about the HW, only.
4746 * Also some structs may be set up here. But most likely you want to have
4747 * that in core_init(), too.
4748 */
4749
4750 err = ssb_bus_powerup(bus, 0);
4751 if (err) {
4752 b43err(wl, "Bus powerup failed\n");
4753 goto out;
4754 }
4755 /* Get the PHY type. */
4756 if (dev->dev->id.revision >= 5) {
4757 u32 tmshigh;
4758
4759 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4760 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4761 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4762 } else
4763 B43_WARN_ON(1);
4764
4765 dev->phy.gmode = have_2ghz_phy;
4766 dev->phy.radio_on = 1;
4767 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4768 b43_wireless_core_reset(dev, tmp);
4769
4770 err = b43_phy_versioning(dev);
4771 if (err)
4772 goto err_powerdown;
4773 /* Check if this device supports multiband. */
4774 if (!pdev ||
4775 (pdev->device != 0x4312 &&
4776 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4777 /* No multiband support. */
4778 have_2ghz_phy = 0;
4779 have_5ghz_phy = 0;
4780 switch (dev->phy.type) {
4781 case B43_PHYTYPE_A:
4782 have_5ghz_phy = 1;
4783 break;
4784 case B43_PHYTYPE_LP: //FIXME not always!
4785 #if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
4786 have_5ghz_phy = 1;
4787 #endif
4788 case B43_PHYTYPE_G:
4789 case B43_PHYTYPE_N:
4790 have_2ghz_phy = 1;
4791 break;
4792 default:
4793 B43_WARN_ON(1);
4794 }
4795 }
4796 if (dev->phy.type == B43_PHYTYPE_A) {
4797 /* FIXME */
4798 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4799 err = -EOPNOTSUPP;
4800 goto err_powerdown;
4801 }
4802 if (1 /* disable A-PHY */) {
4803 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4804 if (dev->phy.type != B43_PHYTYPE_N &&
4805 dev->phy.type != B43_PHYTYPE_LP) {
4806 have_2ghz_phy = 1;
4807 have_5ghz_phy = 0;
4808 }
4809 }
4810
4811 err = b43_phy_allocate(dev);
4812 if (err)
4813 goto err_powerdown;
4814
4815 dev->phy.gmode = have_2ghz_phy;
4816 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4817 b43_wireless_core_reset(dev, tmp);
4818
4819 err = b43_validate_chipaccess(dev);
4820 if (err)
4821 goto err_phy_free;
4822 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4823 if (err)
4824 goto err_phy_free;
4825
4826 /* Now set some default "current_dev" */
4827 if (!wl->current_dev)
4828 wl->current_dev = dev;
4829 INIT_WORK(&dev->restart_work, b43_chip_reset);
4830
4831 dev->phy.ops->switch_analog(dev, 0);
4832 ssb_device_disable(dev->dev, 0);
4833 ssb_bus_may_powerdown(bus);
4834
4835 out:
4836 return err;
4837
4838 err_phy_free:
4839 b43_phy_free(dev);
4840 err_powerdown:
4841 ssb_bus_may_powerdown(bus);
4842 return err;
4843 }
4844
b43_one_core_detach(struct ssb_device * dev)4845 static void b43_one_core_detach(struct ssb_device *dev)
4846 {
4847 struct b43_wldev *wldev;
4848 struct b43_wl *wl;
4849
4850 /* Do not cancel ieee80211-workqueue based work here.
4851 * See comment in b43_remove(). */
4852
4853 wldev = ssb_get_drvdata(dev);
4854 wl = wldev->wl;
4855 b43_debugfs_remove_device(wldev);
4856 b43_wireless_core_detach(wldev);
4857 list_del(&wldev->list);
4858 wl->nr_devs--;
4859 ssb_set_drvdata(dev, NULL);
4860 kfree(wldev);
4861 }
4862
b43_one_core_attach(struct ssb_device * dev,struct b43_wl * wl)4863 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4864 {
4865 struct b43_wldev *wldev;
4866 struct pci_dev *pdev;
4867 int err = -ENOMEM;
4868
4869 if (!list_empty(&wl->devlist)) {
4870 /* We are not the first core on this chip. */
4871 pdev = (dev->bus->bustype == SSB_BUSTYPE_PCI) ? dev->bus->host_pci : NULL;
4872 /* Only special chips support more than one wireless
4873 * core, although some of the other chips have more than
4874 * one wireless core as well. Check for this and
4875 * bail out early.
4876 */
4877 if (!pdev ||
4878 ((pdev->device != 0x4321) &&
4879 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4880 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4881 return -ENODEV;
4882 }
4883 }
4884
4885 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4886 if (!wldev)
4887 goto out;
4888
4889 wldev->use_pio = b43_modparam_pio;
4890 wldev->dev = dev;
4891 wldev->wl = wl;
4892 b43_set_status(wldev, B43_STAT_UNINIT);
4893 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4894 INIT_LIST_HEAD(&wldev->list);
4895
4896 err = b43_wireless_core_attach(wldev);
4897 if (err)
4898 goto err_kfree_wldev;
4899
4900 list_add(&wldev->list, &wl->devlist);
4901 wl->nr_devs++;
4902 ssb_set_drvdata(dev, wldev);
4903 b43_debugfs_add_device(wldev);
4904
4905 out:
4906 return err;
4907
4908 err_kfree_wldev:
4909 kfree(wldev);
4910 return err;
4911 }
4912
4913 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4914 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4915 (pdev->device == _device) && \
4916 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4917 (pdev->subsystem_device == _subdevice) )
4918
b43_sprom_fixup(struct ssb_bus * bus)4919 static void b43_sprom_fixup(struct ssb_bus *bus)
4920 {
4921 struct pci_dev *pdev;
4922
4923 /* boardflags workarounds */
4924 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4925 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4926 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4927 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4928 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4929 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4930 if (bus->bustype == SSB_BUSTYPE_PCI) {
4931 pdev = bus->host_pci;
4932 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4933 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4934 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
4935 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4936 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4937 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4938 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4939 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4940 }
4941 }
4942
b43_wireless_exit(struct ssb_device * dev,struct b43_wl * wl)4943 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4944 {
4945 struct ieee80211_hw *hw = wl->hw;
4946
4947 ssb_set_devtypedata(dev, NULL);
4948 ieee80211_free_hw(hw);
4949 }
4950
b43_wireless_init(struct ssb_device * dev)4951 static int b43_wireless_init(struct ssb_device *dev)
4952 {
4953 struct ssb_sprom *sprom = &dev->bus->sprom;
4954 struct ieee80211_hw *hw;
4955 struct b43_wl *wl;
4956 int err = -ENOMEM;
4957
4958 b43_sprom_fixup(dev->bus);
4959
4960 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4961 if (!hw) {
4962 b43err(NULL, "Could not allocate ieee80211 device\n");
4963 goto out;
4964 }
4965 wl = hw_to_b43_wl(hw);
4966
4967 /* fill hw info */
4968 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4969 IEEE80211_HW_SIGNAL_DBM;
4970
4971 hw->wiphy->interface_modes =
4972 BIT(NL80211_IFTYPE_AP) |
4973 BIT(NL80211_IFTYPE_MESH_POINT) |
4974 BIT(NL80211_IFTYPE_STATION) |
4975 BIT(NL80211_IFTYPE_WDS) |
4976 BIT(NL80211_IFTYPE_ADHOC);
4977
4978 hw->queues = modparam_qos ? 4 : 1;
4979 wl->mac80211_initially_registered_queues = hw->queues;
4980 hw->max_rates = 2;
4981 SET_IEEE80211_DEV(hw, dev->dev);
4982 if (is_valid_ether_addr(sprom->et1mac))
4983 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4984 else
4985 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4986
4987 /* Initialize struct b43_wl */
4988 wl->hw = hw;
4989 mutex_init(&wl->mutex);
4990 spin_lock_init(&wl->hardirq_lock);
4991 INIT_LIST_HEAD(&wl->devlist);
4992 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4993 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4994 INIT_WORK(&wl->tx_work, b43_tx_work);
4995 skb_queue_head_init(&wl->tx_queue);
4996
4997 ssb_set_devtypedata(dev, wl);
4998 b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
4999 dev->bus->chip_id, dev->id.revision);
5000 err = 0;
5001 out:
5002 return err;
5003 }
5004
b43_probe(struct ssb_device * dev,const struct ssb_device_id * id)5005 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
5006 {
5007 struct b43_wl *wl;
5008 int err;
5009 int first = 0;
5010
5011 wl = ssb_get_devtypedata(dev);
5012 if (!wl) {
5013 /* Probing the first core. Must setup common struct b43_wl */
5014 first = 1;
5015 err = b43_wireless_init(dev);
5016 if (err)
5017 goto out;
5018 wl = ssb_get_devtypedata(dev);
5019 B43_WARN_ON(!wl);
5020 }
5021 err = b43_one_core_attach(dev, wl);
5022 if (err)
5023 goto err_wireless_exit;
5024
5025 if (first) {
5026 err = ieee80211_register_hw(wl->hw);
5027 if (err)
5028 goto err_one_core_detach;
5029 b43_leds_register(wl->current_dev);
5030 }
5031
5032 out:
5033 return err;
5034
5035 err_one_core_detach:
5036 b43_one_core_detach(dev);
5037 err_wireless_exit:
5038 if (first)
5039 b43_wireless_exit(dev, wl);
5040 return err;
5041 }
5042
b43_remove(struct ssb_device * dev)5043 static void b43_remove(struct ssb_device *dev)
5044 {
5045 struct b43_wl *wl = ssb_get_devtypedata(dev);
5046 struct b43_wldev *wldev = ssb_get_drvdata(dev);
5047
5048 /* We must cancel any work here before unregistering from ieee80211,
5049 * as the ieee80211 unreg will destroy the workqueue. */
5050 cancel_work_sync(&wldev->restart_work);
5051
5052 B43_WARN_ON(!wl);
5053 if (wl->current_dev == wldev) {
5054 /* Restore the queues count before unregistering, because firmware detect
5055 * might have modified it. Restoring is important, so the networking
5056 * stack can properly free resources. */
5057 wl->hw->queues = wl->mac80211_initially_registered_queues;
5058 b43_leds_stop(wldev);
5059 ieee80211_unregister_hw(wl->hw);
5060 }
5061
5062 b43_one_core_detach(dev);
5063
5064 if (list_empty(&wl->devlist)) {
5065 b43_leds_unregister(wl);
5066 /* Last core on the chip unregistered.
5067 * We can destroy common struct b43_wl.
5068 */
5069 b43_wireless_exit(dev, wl);
5070 }
5071 }
5072
5073 /* Perform a hardware reset. This can be called from any context. */
b43_controller_restart(struct b43_wldev * dev,const char * reason)5074 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5075 {
5076 /* Must avoid requeueing, if we are in shutdown. */
5077 if (b43_status(dev) < B43_STAT_INITIALIZED)
5078 return;
5079 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5080 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5081 }
5082
5083 static struct ssb_driver b43_ssb_driver = {
5084 .name = KBUILD_MODNAME,
5085 .id_table = b43_ssb_tbl,
5086 .probe = b43_probe,
5087 .remove = b43_remove,
5088 };
5089
b43_print_driverinfo(void)5090 static void b43_print_driverinfo(void)
5091 {
5092 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5093 *feat_leds = "", *feat_sdio = "";
5094
5095 #ifdef CONFIG_B43_PCI_AUTOSELECT
5096 feat_pci = "P";
5097 #endif
5098 #ifdef CONFIG_B43_PCMCIA
5099 feat_pcmcia = "M";
5100 #endif
5101 #ifdef CONFIG_B43_PHY_N
5102 feat_nphy = "N";
5103 #endif
5104 #ifdef CONFIG_B43_LEDS
5105 feat_leds = "L";
5106 #endif
5107 #ifdef CONFIG_B43_SDIO
5108 feat_sdio = "S";
5109 #endif
5110 printk(KERN_INFO "Broadcom 43xx driver loaded "
5111 "[ Features: %s%s%s%s%s, Firmware-ID: "
5112 B43_SUPPORTED_FIRMWARE_ID " ]\n",
5113 feat_pci, feat_pcmcia, feat_nphy,
5114 feat_leds, feat_sdio);
5115 }
5116
b43_init(void)5117 static int __init b43_init(void)
5118 {
5119 int err;
5120
5121 b43_debugfs_init();
5122 err = b43_pcmcia_init();
5123 if (err)
5124 goto err_dfs_exit;
5125 err = b43_sdio_init();
5126 if (err)
5127 goto err_pcmcia_exit;
5128 err = ssb_driver_register(&b43_ssb_driver);
5129 if (err)
5130 goto err_sdio_exit;
5131 b43_print_driverinfo();
5132
5133 return err;
5134
5135 err_sdio_exit:
5136 b43_sdio_exit();
5137 err_pcmcia_exit:
5138 b43_pcmcia_exit();
5139 err_dfs_exit:
5140 b43_debugfs_exit();
5141 return err;
5142 }
5143
b43_exit(void)5144 static void __exit b43_exit(void)
5145 {
5146 ssb_driver_unregister(&b43_ssb_driver);
5147 b43_sdio_exit();
5148 b43_pcmcia_exit();
5149 b43_debugfs_exit();
5150 }
5151
5152 module_init(b43_init)
5153 module_exit(b43_exit)
5154