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b43: add helper for finding GPIO device
[mirror_ubuntu-zesty-kernel.git] / drivers / net / wireless / b43 / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005-2009 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 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/ucode5.fw");
76 MODULE_FIRMWARE("b43/ucode9.fw");
77
78 static int modparam_bad_frames_preempt;
79 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
80 MODULE_PARM_DESC(bad_frames_preempt,
81 "enable(1) / disable(0) Bad Frames Preemption");
82
83 static char modparam_fwpostfix[16];
84 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
85 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
86
87 static int modparam_hwpctl;
88 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
89 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
90
91 static int modparam_nohwcrypt;
92 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
93 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
94
95 static int modparam_hwtkip;
96 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
97 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
98
99 static int modparam_qos = 1;
100 module_param_named(qos, modparam_qos, int, 0444);
101 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
102
103 static int modparam_btcoex = 1;
104 module_param_named(btcoex, modparam_btcoex, int, 0444);
105 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
106
107 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
108 module_param_named(verbose, b43_modparam_verbose, int, 0644);
109 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
110
111 static int b43_modparam_pio = B43_PIO_DEFAULT;
112 module_param_named(pio, b43_modparam_pio, int, 0644);
113 MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
114
115 static const struct ssb_device_id b43_ssb_tbl[] = {
116 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
117 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
118 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
119 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
120 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
121 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
122 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
123 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
124 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
125 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
126 SSB_DEVTABLE_END
127 };
128
129 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
130
131 /* Channel and ratetables are shared for all devices.
132 * They can't be const, because ieee80211 puts some precalculated
133 * data in there. This data is the same for all devices, so we don't
134 * get concurrency issues */
135 #define RATETAB_ENT(_rateid, _flags) \
136 { \
137 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
138 .hw_value = (_rateid), \
139 .flags = (_flags), \
140 }
141
142 /*
143 * NOTE: When changing this, sync with xmit.c's
144 * b43_plcp_get_bitrate_idx_* functions!
145 */
146 static struct ieee80211_rate __b43_ratetable[] = {
147 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
148 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
149 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
150 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
151 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
152 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
153 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
154 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
155 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
156 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
157 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
158 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
159 };
160
161 #define b43_a_ratetable (__b43_ratetable + 4)
162 #define b43_a_ratetable_size 8
163 #define b43_b_ratetable (__b43_ratetable + 0)
164 #define b43_b_ratetable_size 4
165 #define b43_g_ratetable (__b43_ratetable + 0)
166 #define b43_g_ratetable_size 12
167
168 #define CHAN4G(_channel, _freq, _flags) { \
169 .band = IEEE80211_BAND_2GHZ, \
170 .center_freq = (_freq), \
171 .hw_value = (_channel), \
172 .flags = (_flags), \
173 .max_antenna_gain = 0, \
174 .max_power = 30, \
175 }
176 static struct ieee80211_channel b43_2ghz_chantable[] = {
177 CHAN4G(1, 2412, 0),
178 CHAN4G(2, 2417, 0),
179 CHAN4G(3, 2422, 0),
180 CHAN4G(4, 2427, 0),
181 CHAN4G(5, 2432, 0),
182 CHAN4G(6, 2437, 0),
183 CHAN4G(7, 2442, 0),
184 CHAN4G(8, 2447, 0),
185 CHAN4G(9, 2452, 0),
186 CHAN4G(10, 2457, 0),
187 CHAN4G(11, 2462, 0),
188 CHAN4G(12, 2467, 0),
189 CHAN4G(13, 2472, 0),
190 CHAN4G(14, 2484, 0),
191 };
192 #undef CHAN4G
193
194 #define CHAN5G(_channel, _flags) { \
195 .band = IEEE80211_BAND_5GHZ, \
196 .center_freq = 5000 + (5 * (_channel)), \
197 .hw_value = (_channel), \
198 .flags = (_flags), \
199 .max_antenna_gain = 0, \
200 .max_power = 30, \
201 }
202 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
203 CHAN5G(32, 0), CHAN5G(34, 0),
204 CHAN5G(36, 0), CHAN5G(38, 0),
205 CHAN5G(40, 0), CHAN5G(42, 0),
206 CHAN5G(44, 0), CHAN5G(46, 0),
207 CHAN5G(48, 0), CHAN5G(50, 0),
208 CHAN5G(52, 0), CHAN5G(54, 0),
209 CHAN5G(56, 0), CHAN5G(58, 0),
210 CHAN5G(60, 0), CHAN5G(62, 0),
211 CHAN5G(64, 0), CHAN5G(66, 0),
212 CHAN5G(68, 0), CHAN5G(70, 0),
213 CHAN5G(72, 0), CHAN5G(74, 0),
214 CHAN5G(76, 0), CHAN5G(78, 0),
215 CHAN5G(80, 0), CHAN5G(82, 0),
216 CHAN5G(84, 0), CHAN5G(86, 0),
217 CHAN5G(88, 0), CHAN5G(90, 0),
218 CHAN5G(92, 0), CHAN5G(94, 0),
219 CHAN5G(96, 0), CHAN5G(98, 0),
220 CHAN5G(100, 0), CHAN5G(102, 0),
221 CHAN5G(104, 0), CHAN5G(106, 0),
222 CHAN5G(108, 0), CHAN5G(110, 0),
223 CHAN5G(112, 0), CHAN5G(114, 0),
224 CHAN5G(116, 0), CHAN5G(118, 0),
225 CHAN5G(120, 0), CHAN5G(122, 0),
226 CHAN5G(124, 0), CHAN5G(126, 0),
227 CHAN5G(128, 0), CHAN5G(130, 0),
228 CHAN5G(132, 0), CHAN5G(134, 0),
229 CHAN5G(136, 0), CHAN5G(138, 0),
230 CHAN5G(140, 0), CHAN5G(142, 0),
231 CHAN5G(144, 0), CHAN5G(145, 0),
232 CHAN5G(146, 0), CHAN5G(147, 0),
233 CHAN5G(148, 0), CHAN5G(149, 0),
234 CHAN5G(150, 0), CHAN5G(151, 0),
235 CHAN5G(152, 0), CHAN5G(153, 0),
236 CHAN5G(154, 0), CHAN5G(155, 0),
237 CHAN5G(156, 0), CHAN5G(157, 0),
238 CHAN5G(158, 0), CHAN5G(159, 0),
239 CHAN5G(160, 0), CHAN5G(161, 0),
240 CHAN5G(162, 0), CHAN5G(163, 0),
241 CHAN5G(164, 0), CHAN5G(165, 0),
242 CHAN5G(166, 0), CHAN5G(168, 0),
243 CHAN5G(170, 0), CHAN5G(172, 0),
244 CHAN5G(174, 0), CHAN5G(176, 0),
245 CHAN5G(178, 0), CHAN5G(180, 0),
246 CHAN5G(182, 0), CHAN5G(184, 0),
247 CHAN5G(186, 0), CHAN5G(188, 0),
248 CHAN5G(190, 0), CHAN5G(192, 0),
249 CHAN5G(194, 0), CHAN5G(196, 0),
250 CHAN5G(198, 0), CHAN5G(200, 0),
251 CHAN5G(202, 0), CHAN5G(204, 0),
252 CHAN5G(206, 0), CHAN5G(208, 0),
253 CHAN5G(210, 0), CHAN5G(212, 0),
254 CHAN5G(214, 0), CHAN5G(216, 0),
255 CHAN5G(218, 0), CHAN5G(220, 0),
256 CHAN5G(222, 0), CHAN5G(224, 0),
257 CHAN5G(226, 0), CHAN5G(228, 0),
258 };
259
260 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
261 CHAN5G(34, 0), CHAN5G(36, 0),
262 CHAN5G(38, 0), CHAN5G(40, 0),
263 CHAN5G(42, 0), CHAN5G(44, 0),
264 CHAN5G(46, 0), CHAN5G(48, 0),
265 CHAN5G(52, 0), CHAN5G(56, 0),
266 CHAN5G(60, 0), CHAN5G(64, 0),
267 CHAN5G(100, 0), CHAN5G(104, 0),
268 CHAN5G(108, 0), CHAN5G(112, 0),
269 CHAN5G(116, 0), CHAN5G(120, 0),
270 CHAN5G(124, 0), CHAN5G(128, 0),
271 CHAN5G(132, 0), CHAN5G(136, 0),
272 CHAN5G(140, 0), CHAN5G(149, 0),
273 CHAN5G(153, 0), CHAN5G(157, 0),
274 CHAN5G(161, 0), CHAN5G(165, 0),
275 CHAN5G(184, 0), CHAN5G(188, 0),
276 CHAN5G(192, 0), CHAN5G(196, 0),
277 CHAN5G(200, 0), CHAN5G(204, 0),
278 CHAN5G(208, 0), CHAN5G(212, 0),
279 CHAN5G(216, 0),
280 };
281 #undef CHAN5G
282
283 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
284 .band = IEEE80211_BAND_5GHZ,
285 .channels = b43_5ghz_nphy_chantable,
286 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
287 .bitrates = b43_a_ratetable,
288 .n_bitrates = b43_a_ratetable_size,
289 };
290
291 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
292 .band = IEEE80211_BAND_5GHZ,
293 .channels = b43_5ghz_aphy_chantable,
294 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
295 .bitrates = b43_a_ratetable,
296 .n_bitrates = b43_a_ratetable_size,
297 };
298
299 static struct ieee80211_supported_band b43_band_2GHz = {
300 .band = IEEE80211_BAND_2GHZ,
301 .channels = b43_2ghz_chantable,
302 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
303 .bitrates = b43_g_ratetable,
304 .n_bitrates = b43_g_ratetable_size,
305 };
306
307 static void b43_wireless_core_exit(struct b43_wldev *dev);
308 static int b43_wireless_core_init(struct b43_wldev *dev);
309 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
310 static int b43_wireless_core_start(struct b43_wldev *dev);
311
312 static int b43_ratelimit(struct b43_wl *wl)
313 {
314 if (!wl || !wl->current_dev)
315 return 1;
316 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
317 return 1;
318 /* We are up and running.
319 * Ratelimit the messages to avoid DoS over the net. */
320 return net_ratelimit();
321 }
322
323 void b43info(struct b43_wl *wl, const char *fmt, ...)
324 {
325 struct va_format vaf;
326 va_list args;
327
328 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
329 return;
330 if (!b43_ratelimit(wl))
331 return;
332
333 va_start(args, fmt);
334
335 vaf.fmt = fmt;
336 vaf.va = &args;
337
338 printk(KERN_INFO "b43-%s: %pV",
339 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
340
341 va_end(args);
342 }
343
344 void b43err(struct b43_wl *wl, const char *fmt, ...)
345 {
346 struct va_format vaf;
347 va_list args;
348
349 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
350 return;
351 if (!b43_ratelimit(wl))
352 return;
353
354 va_start(args, fmt);
355
356 vaf.fmt = fmt;
357 vaf.va = &args;
358
359 printk(KERN_ERR "b43-%s ERROR: %pV",
360 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
361
362 va_end(args);
363 }
364
365 void b43warn(struct b43_wl *wl, const char *fmt, ...)
366 {
367 struct va_format vaf;
368 va_list args;
369
370 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
371 return;
372 if (!b43_ratelimit(wl))
373 return;
374
375 va_start(args, fmt);
376
377 vaf.fmt = fmt;
378 vaf.va = &args;
379
380 printk(KERN_WARNING "b43-%s warning: %pV",
381 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
382
383 va_end(args);
384 }
385
386 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
387 {
388 struct va_format vaf;
389 va_list args;
390
391 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
392 return;
393
394 va_start(args, fmt);
395
396 vaf.fmt = fmt;
397 vaf.va = &args;
398
399 printk(KERN_DEBUG "b43-%s debug: %pV",
400 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
401
402 va_end(args);
403 }
404
405 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
406 {
407 u32 macctl;
408
409 B43_WARN_ON(offset % 4 != 0);
410
411 macctl = b43_read32(dev, B43_MMIO_MACCTL);
412 if (macctl & B43_MACCTL_BE)
413 val = swab32(val);
414
415 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
416 mmiowb();
417 b43_write32(dev, B43_MMIO_RAM_DATA, val);
418 }
419
420 static inline void b43_shm_control_word(struct b43_wldev *dev,
421 u16 routing, u16 offset)
422 {
423 u32 control;
424
425 /* "offset" is the WORD offset. */
426 control = routing;
427 control <<= 16;
428 control |= offset;
429 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
430 }
431
432 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
433 {
434 u32 ret;
435
436 if (routing == B43_SHM_SHARED) {
437 B43_WARN_ON(offset & 0x0001);
438 if (offset & 0x0003) {
439 /* Unaligned access */
440 b43_shm_control_word(dev, routing, offset >> 2);
441 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
442 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
443 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
444
445 goto out;
446 }
447 offset >>= 2;
448 }
449 b43_shm_control_word(dev, routing, offset);
450 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
451 out:
452 return ret;
453 }
454
455 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
456 {
457 u16 ret;
458
459 if (routing == B43_SHM_SHARED) {
460 B43_WARN_ON(offset & 0x0001);
461 if (offset & 0x0003) {
462 /* Unaligned access */
463 b43_shm_control_word(dev, routing, offset >> 2);
464 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
465
466 goto out;
467 }
468 offset >>= 2;
469 }
470 b43_shm_control_word(dev, routing, offset);
471 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
472 out:
473 return ret;
474 }
475
476 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
477 {
478 if (routing == B43_SHM_SHARED) {
479 B43_WARN_ON(offset & 0x0001);
480 if (offset & 0x0003) {
481 /* Unaligned access */
482 b43_shm_control_word(dev, routing, offset >> 2);
483 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
484 value & 0xFFFF);
485 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
486 b43_write16(dev, B43_MMIO_SHM_DATA,
487 (value >> 16) & 0xFFFF);
488 return;
489 }
490 offset >>= 2;
491 }
492 b43_shm_control_word(dev, routing, offset);
493 b43_write32(dev, B43_MMIO_SHM_DATA, value);
494 }
495
496 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
497 {
498 if (routing == B43_SHM_SHARED) {
499 B43_WARN_ON(offset & 0x0001);
500 if (offset & 0x0003) {
501 /* Unaligned access */
502 b43_shm_control_word(dev, routing, offset >> 2);
503 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
504 return;
505 }
506 offset >>= 2;
507 }
508 b43_shm_control_word(dev, routing, offset);
509 b43_write16(dev, B43_MMIO_SHM_DATA, value);
510 }
511
512 /* Read HostFlags */
513 u64 b43_hf_read(struct b43_wldev *dev)
514 {
515 u64 ret;
516
517 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
518 ret <<= 16;
519 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
520 ret <<= 16;
521 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
522
523 return ret;
524 }
525
526 /* Write HostFlags */
527 void b43_hf_write(struct b43_wldev *dev, u64 value)
528 {
529 u16 lo, mi, hi;
530
531 lo = (value & 0x00000000FFFFULL);
532 mi = (value & 0x0000FFFF0000ULL) >> 16;
533 hi = (value & 0xFFFF00000000ULL) >> 32;
534 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
535 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
536 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
537 }
538
539 /* Read the firmware capabilities bitmask (Opensource firmware only) */
540 static u16 b43_fwcapa_read(struct b43_wldev *dev)
541 {
542 B43_WARN_ON(!dev->fw.opensource);
543 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
544 }
545
546 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
547 {
548 u32 low, high;
549
550 B43_WARN_ON(dev->sdev->id.revision < 3);
551
552 /* The hardware guarantees us an atomic read, if we
553 * read the low register first. */
554 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
555 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
556
557 *tsf = high;
558 *tsf <<= 32;
559 *tsf |= low;
560 }
561
562 static void b43_time_lock(struct b43_wldev *dev)
563 {
564 u32 macctl;
565
566 macctl = b43_read32(dev, B43_MMIO_MACCTL);
567 macctl |= B43_MACCTL_TBTTHOLD;
568 b43_write32(dev, B43_MMIO_MACCTL, macctl);
569 /* Commit the write */
570 b43_read32(dev, B43_MMIO_MACCTL);
571 }
572
573 static void b43_time_unlock(struct b43_wldev *dev)
574 {
575 u32 macctl;
576
577 macctl = b43_read32(dev, B43_MMIO_MACCTL);
578 macctl &= ~B43_MACCTL_TBTTHOLD;
579 b43_write32(dev, B43_MMIO_MACCTL, macctl);
580 /* Commit the write */
581 b43_read32(dev, B43_MMIO_MACCTL);
582 }
583
584 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
585 {
586 u32 low, high;
587
588 B43_WARN_ON(dev->sdev->id.revision < 3);
589
590 low = tsf;
591 high = (tsf >> 32);
592 /* The hardware guarantees us an atomic write, if we
593 * write the low register first. */
594 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
595 mmiowb();
596 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
597 mmiowb();
598 }
599
600 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
601 {
602 b43_time_lock(dev);
603 b43_tsf_write_locked(dev, tsf);
604 b43_time_unlock(dev);
605 }
606
607 static
608 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
609 {
610 static const u8 zero_addr[ETH_ALEN] = { 0 };
611 u16 data;
612
613 if (!mac)
614 mac = zero_addr;
615
616 offset |= 0x0020;
617 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
618
619 data = mac[0];
620 data |= mac[1] << 8;
621 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
622 data = mac[2];
623 data |= mac[3] << 8;
624 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
625 data = mac[4];
626 data |= mac[5] << 8;
627 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
628 }
629
630 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
631 {
632 const u8 *mac;
633 const u8 *bssid;
634 u8 mac_bssid[ETH_ALEN * 2];
635 int i;
636 u32 tmp;
637
638 bssid = dev->wl->bssid;
639 mac = dev->wl->mac_addr;
640
641 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
642
643 memcpy(mac_bssid, mac, ETH_ALEN);
644 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
645
646 /* Write our MAC address and BSSID to template ram */
647 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
648 tmp = (u32) (mac_bssid[i + 0]);
649 tmp |= (u32) (mac_bssid[i + 1]) << 8;
650 tmp |= (u32) (mac_bssid[i + 2]) << 16;
651 tmp |= (u32) (mac_bssid[i + 3]) << 24;
652 b43_ram_write(dev, 0x20 + i, tmp);
653 }
654 }
655
656 static void b43_upload_card_macaddress(struct b43_wldev *dev)
657 {
658 b43_write_mac_bssid_templates(dev);
659 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
660 }
661
662 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
663 {
664 /* slot_time is in usec. */
665 /* This test used to exit for all but a G PHY. */
666 if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
667 return;
668 b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
669 /* Shared memory location 0x0010 is the slot time and should be
670 * set to slot_time; however, this register is initially 0 and changing
671 * the value adversely affects the transmit rate for BCM4311
672 * devices. Until this behavior is unterstood, delete this step
673 *
674 * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
675 */
676 }
677
678 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
679 {
680 b43_set_slot_time(dev, 9);
681 }
682
683 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
684 {
685 b43_set_slot_time(dev, 20);
686 }
687
688 /* DummyTransmission function, as documented on
689 * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
690 */
691 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
692 {
693 struct b43_phy *phy = &dev->phy;
694 unsigned int i, max_loop;
695 u16 value;
696 u32 buffer[5] = {
697 0x00000000,
698 0x00D40000,
699 0x00000000,
700 0x01000000,
701 0x00000000,
702 };
703
704 if (ofdm) {
705 max_loop = 0x1E;
706 buffer[0] = 0x000201CC;
707 } else {
708 max_loop = 0xFA;
709 buffer[0] = 0x000B846E;
710 }
711
712 for (i = 0; i < 5; i++)
713 b43_ram_write(dev, i * 4, buffer[i]);
714
715 b43_write16(dev, 0x0568, 0x0000);
716 if (dev->sdev->id.revision < 11)
717 b43_write16(dev, 0x07C0, 0x0000);
718 else
719 b43_write16(dev, 0x07C0, 0x0100);
720 value = (ofdm ? 0x41 : 0x40);
721 b43_write16(dev, 0x050C, value);
722 if ((phy->type == B43_PHYTYPE_N) || (phy->type == B43_PHYTYPE_LP))
723 b43_write16(dev, 0x0514, 0x1A02);
724 b43_write16(dev, 0x0508, 0x0000);
725 b43_write16(dev, 0x050A, 0x0000);
726 b43_write16(dev, 0x054C, 0x0000);
727 b43_write16(dev, 0x056A, 0x0014);
728 b43_write16(dev, 0x0568, 0x0826);
729 b43_write16(dev, 0x0500, 0x0000);
730 if (!pa_on && (phy->type == B43_PHYTYPE_N)) {
731 //SPEC TODO
732 }
733
734 switch (phy->type) {
735 case B43_PHYTYPE_N:
736 b43_write16(dev, 0x0502, 0x00D0);
737 break;
738 case B43_PHYTYPE_LP:
739 b43_write16(dev, 0x0502, 0x0050);
740 break;
741 default:
742 b43_write16(dev, 0x0502, 0x0030);
743 }
744
745 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
746 b43_radio_write16(dev, 0x0051, 0x0017);
747 for (i = 0x00; i < max_loop; i++) {
748 value = b43_read16(dev, 0x050E);
749 if (value & 0x0080)
750 break;
751 udelay(10);
752 }
753 for (i = 0x00; i < 0x0A; i++) {
754 value = b43_read16(dev, 0x050E);
755 if (value & 0x0400)
756 break;
757 udelay(10);
758 }
759 for (i = 0x00; i < 0x19; i++) {
760 value = b43_read16(dev, 0x0690);
761 if (!(value & 0x0100))
762 break;
763 udelay(10);
764 }
765 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
766 b43_radio_write16(dev, 0x0051, 0x0037);
767 }
768
769 static void key_write(struct b43_wldev *dev,
770 u8 index, u8 algorithm, const u8 *key)
771 {
772 unsigned int i;
773 u32 offset;
774 u16 value;
775 u16 kidx;
776
777 /* Key index/algo block */
778 kidx = b43_kidx_to_fw(dev, index);
779 value = ((kidx << 4) | algorithm);
780 b43_shm_write16(dev, B43_SHM_SHARED,
781 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
782
783 /* Write the key to the Key Table Pointer offset */
784 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
785 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
786 value = key[i];
787 value |= (u16) (key[i + 1]) << 8;
788 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
789 }
790 }
791
792 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
793 {
794 u32 addrtmp[2] = { 0, 0, };
795 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
796
797 if (b43_new_kidx_api(dev))
798 pairwise_keys_start = B43_NR_GROUP_KEYS;
799
800 B43_WARN_ON(index < pairwise_keys_start);
801 /* We have four default TX keys and possibly four default RX keys.
802 * Physical mac 0 is mapped to physical key 4 or 8, depending
803 * on the firmware version.
804 * So we must adjust the index here.
805 */
806 index -= pairwise_keys_start;
807 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
808
809 if (addr) {
810 addrtmp[0] = addr[0];
811 addrtmp[0] |= ((u32) (addr[1]) << 8);
812 addrtmp[0] |= ((u32) (addr[2]) << 16);
813 addrtmp[0] |= ((u32) (addr[3]) << 24);
814 addrtmp[1] = addr[4];
815 addrtmp[1] |= ((u32) (addr[5]) << 8);
816 }
817
818 /* Receive match transmitter address (RCMTA) mechanism */
819 b43_shm_write32(dev, B43_SHM_RCMTA,
820 (index * 2) + 0, addrtmp[0]);
821 b43_shm_write16(dev, B43_SHM_RCMTA,
822 (index * 2) + 1, addrtmp[1]);
823 }
824
825 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
826 * When a packet is received, the iv32 is checked.
827 * - if it doesn't the packet is returned without modification (and software
828 * decryption can be done). That's what happen when iv16 wrap.
829 * - if it does, the rc4 key is computed, and decryption is tried.
830 * Either it will success and B43_RX_MAC_DEC is returned,
831 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
832 * and the packet is not usable (it got modified by the ucode).
833 * So in order to never have B43_RX_MAC_DECERR, we should provide
834 * a iv32 and phase1key that match. Because we drop packets in case of
835 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
836 * packets will be lost without higher layer knowing (ie no resync possible
837 * until next wrap).
838 *
839 * NOTE : this should support 50 key like RCMTA because
840 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
841 */
842 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
843 u16 *phase1key)
844 {
845 unsigned int i;
846 u32 offset;
847 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
848
849 if (!modparam_hwtkip)
850 return;
851
852 if (b43_new_kidx_api(dev))
853 pairwise_keys_start = B43_NR_GROUP_KEYS;
854
855 B43_WARN_ON(index < pairwise_keys_start);
856 /* We have four default TX keys and possibly four default RX keys.
857 * Physical mac 0 is mapped to physical key 4 or 8, depending
858 * on the firmware version.
859 * So we must adjust the index here.
860 */
861 index -= pairwise_keys_start;
862 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
863
864 if (b43_debug(dev, B43_DBG_KEYS)) {
865 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
866 index, iv32);
867 }
868 /* Write the key to the RX tkip shared mem */
869 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
870 for (i = 0; i < 10; i += 2) {
871 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
872 phase1key ? phase1key[i / 2] : 0);
873 }
874 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
875 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
876 }
877
878 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
879 struct ieee80211_vif *vif,
880 struct ieee80211_key_conf *keyconf,
881 struct ieee80211_sta *sta,
882 u32 iv32, u16 *phase1key)
883 {
884 struct b43_wl *wl = hw_to_b43_wl(hw);
885 struct b43_wldev *dev;
886 int index = keyconf->hw_key_idx;
887
888 if (B43_WARN_ON(!modparam_hwtkip))
889 return;
890
891 /* This is only called from the RX path through mac80211, where
892 * our mutex is already locked. */
893 B43_WARN_ON(!mutex_is_locked(&wl->mutex));
894 dev = wl->current_dev;
895 B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
896
897 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
898
899 rx_tkip_phase1_write(dev, index, iv32, phase1key);
900 /* only pairwise TKIP keys are supported right now */
901 if (WARN_ON(!sta))
902 return;
903 keymac_write(dev, index, sta->addr);
904 }
905
906 static void do_key_write(struct b43_wldev *dev,
907 u8 index, u8 algorithm,
908 const u8 *key, size_t key_len, const u8 *mac_addr)
909 {
910 u8 buf[B43_SEC_KEYSIZE] = { 0, };
911 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
912
913 if (b43_new_kidx_api(dev))
914 pairwise_keys_start = B43_NR_GROUP_KEYS;
915
916 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
917 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
918
919 if (index >= pairwise_keys_start)
920 keymac_write(dev, index, NULL); /* First zero out mac. */
921 if (algorithm == B43_SEC_ALGO_TKIP) {
922 /*
923 * We should provide an initial iv32, phase1key pair.
924 * We could start with iv32=0 and compute the corresponding
925 * phase1key, but this means calling ieee80211_get_tkip_key
926 * with a fake skb (or export other tkip function).
927 * Because we are lazy we hope iv32 won't start with
928 * 0xffffffff and let's b43_op_update_tkip_key provide a
929 * correct pair.
930 */
931 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
932 } else if (index >= pairwise_keys_start) /* clear it */
933 rx_tkip_phase1_write(dev, index, 0, NULL);
934 if (key)
935 memcpy(buf, key, key_len);
936 key_write(dev, index, algorithm, buf);
937 if (index >= pairwise_keys_start)
938 keymac_write(dev, index, mac_addr);
939
940 dev->key[index].algorithm = algorithm;
941 }
942
943 static int b43_key_write(struct b43_wldev *dev,
944 int index, u8 algorithm,
945 const u8 *key, size_t key_len,
946 const u8 *mac_addr,
947 struct ieee80211_key_conf *keyconf)
948 {
949 int i;
950 int pairwise_keys_start;
951
952 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
953 * - Temporal Encryption Key (128 bits)
954 * - Temporal Authenticator Tx MIC Key (64 bits)
955 * - Temporal Authenticator Rx MIC Key (64 bits)
956 *
957 * Hardware only store TEK
958 */
959 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
960 key_len = 16;
961 if (key_len > B43_SEC_KEYSIZE)
962 return -EINVAL;
963 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
964 /* Check that we don't already have this key. */
965 B43_WARN_ON(dev->key[i].keyconf == keyconf);
966 }
967 if (index < 0) {
968 /* Pairwise key. Get an empty slot for the key. */
969 if (b43_new_kidx_api(dev))
970 pairwise_keys_start = B43_NR_GROUP_KEYS;
971 else
972 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
973 for (i = pairwise_keys_start;
974 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
975 i++) {
976 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
977 if (!dev->key[i].keyconf) {
978 /* found empty */
979 index = i;
980 break;
981 }
982 }
983 if (index < 0) {
984 b43warn(dev->wl, "Out of hardware key memory\n");
985 return -ENOSPC;
986 }
987 } else
988 B43_WARN_ON(index > 3);
989
990 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
991 if ((index <= 3) && !b43_new_kidx_api(dev)) {
992 /* Default RX key */
993 B43_WARN_ON(mac_addr);
994 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
995 }
996 keyconf->hw_key_idx = index;
997 dev->key[index].keyconf = keyconf;
998
999 return 0;
1000 }
1001
1002 static int b43_key_clear(struct b43_wldev *dev, int index)
1003 {
1004 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
1005 return -EINVAL;
1006 do_key_write(dev, index, B43_SEC_ALGO_NONE,
1007 NULL, B43_SEC_KEYSIZE, NULL);
1008 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1009 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
1010 NULL, B43_SEC_KEYSIZE, NULL);
1011 }
1012 dev->key[index].keyconf = NULL;
1013
1014 return 0;
1015 }
1016
1017 static void b43_clear_keys(struct b43_wldev *dev)
1018 {
1019 int i, count;
1020
1021 if (b43_new_kidx_api(dev))
1022 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1023 else
1024 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1025 for (i = 0; i < count; i++)
1026 b43_key_clear(dev, i);
1027 }
1028
1029 static void b43_dump_keymemory(struct b43_wldev *dev)
1030 {
1031 unsigned int i, index, count, offset, pairwise_keys_start;
1032 u8 mac[ETH_ALEN];
1033 u16 algo;
1034 u32 rcmta0;
1035 u16 rcmta1;
1036 u64 hf;
1037 struct b43_key *key;
1038
1039 if (!b43_debug(dev, B43_DBG_KEYS))
1040 return;
1041
1042 hf = b43_hf_read(dev);
1043 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1044 !!(hf & B43_HF_USEDEFKEYS));
1045 if (b43_new_kidx_api(dev)) {
1046 pairwise_keys_start = B43_NR_GROUP_KEYS;
1047 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1048 } else {
1049 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1050 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1051 }
1052 for (index = 0; index < count; index++) {
1053 key = &(dev->key[index]);
1054 printk(KERN_DEBUG "Key slot %02u: %s",
1055 index, (key->keyconf == NULL) ? " " : "*");
1056 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1057 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1058 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1059 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1060 }
1061
1062 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1063 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1064 printk(" Algo: %04X/%02X", algo, key->algorithm);
1065
1066 if (index >= pairwise_keys_start) {
1067 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1068 printk(" TKIP: ");
1069 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1070 for (i = 0; i < 14; i += 2) {
1071 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1072 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1073 }
1074 }
1075 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1076 ((index - pairwise_keys_start) * 2) + 0);
1077 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1078 ((index - pairwise_keys_start) * 2) + 1);
1079 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1080 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1081 printk(" MAC: %pM", mac);
1082 } else
1083 printk(" DEFAULT KEY");
1084 printk("\n");
1085 }
1086 }
1087
1088 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1089 {
1090 u32 macctl;
1091 u16 ucstat;
1092 bool hwps;
1093 bool awake;
1094 int i;
1095
1096 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1097 (ps_flags & B43_PS_DISABLED));
1098 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1099
1100 if (ps_flags & B43_PS_ENABLED) {
1101 hwps = 1;
1102 } else if (ps_flags & B43_PS_DISABLED) {
1103 hwps = 0;
1104 } else {
1105 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1106 // and thus is not an AP and we are associated, set bit 25
1107 }
1108 if (ps_flags & B43_PS_AWAKE) {
1109 awake = 1;
1110 } else if (ps_flags & B43_PS_ASLEEP) {
1111 awake = 0;
1112 } else {
1113 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1114 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1115 // successful, set bit26
1116 }
1117
1118 /* FIXME: For now we force awake-on and hwps-off */
1119 hwps = 0;
1120 awake = 1;
1121
1122 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1123 if (hwps)
1124 macctl |= B43_MACCTL_HWPS;
1125 else
1126 macctl &= ~B43_MACCTL_HWPS;
1127 if (awake)
1128 macctl |= B43_MACCTL_AWAKE;
1129 else
1130 macctl &= ~B43_MACCTL_AWAKE;
1131 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1132 /* Commit write */
1133 b43_read32(dev, B43_MMIO_MACCTL);
1134 if (awake && dev->sdev->id.revision >= 5) {
1135 /* Wait for the microcode to wake up. */
1136 for (i = 0; i < 100; i++) {
1137 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1138 B43_SHM_SH_UCODESTAT);
1139 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1140 break;
1141 udelay(10);
1142 }
1143 }
1144 }
1145
1146 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1147 {
1148 u32 tmslow;
1149 u32 macctl;
1150
1151 flags |= B43_TMSLOW_PHYCLKEN;
1152 flags |= B43_TMSLOW_PHYRESET;
1153 if (dev->phy.type == B43_PHYTYPE_N)
1154 flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */
1155 ssb_device_enable(dev->sdev, flags);
1156 msleep(2); /* Wait for the PLL to turn on. */
1157
1158 /* Now take the PHY out of Reset again */
1159 tmslow = ssb_read32(dev->sdev, SSB_TMSLOW);
1160 tmslow |= SSB_TMSLOW_FGC;
1161 tmslow &= ~B43_TMSLOW_PHYRESET;
1162 ssb_write32(dev->sdev, SSB_TMSLOW, tmslow);
1163 ssb_read32(dev->sdev, SSB_TMSLOW); /* flush */
1164 msleep(1);
1165 tmslow &= ~SSB_TMSLOW_FGC;
1166 ssb_write32(dev->sdev, SSB_TMSLOW, tmslow);
1167 ssb_read32(dev->sdev, SSB_TMSLOW); /* flush */
1168 msleep(1);
1169
1170 /* Turn Analog ON, but only if we already know the PHY-type.
1171 * This protects against very early setup where we don't know the
1172 * PHY-type, yet. wireless_core_reset will be called once again later,
1173 * when we know the PHY-type. */
1174 if (dev->phy.ops)
1175 dev->phy.ops->switch_analog(dev, 1);
1176
1177 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1178 macctl &= ~B43_MACCTL_GMODE;
1179 if (flags & B43_TMSLOW_GMODE)
1180 macctl |= B43_MACCTL_GMODE;
1181 macctl |= B43_MACCTL_IHR_ENABLED;
1182 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1183 }
1184
1185 static void handle_irq_transmit_status(struct b43_wldev *dev)
1186 {
1187 u32 v0, v1;
1188 u16 tmp;
1189 struct b43_txstatus stat;
1190
1191 while (1) {
1192 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1193 if (!(v0 & 0x00000001))
1194 break;
1195 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1196
1197 stat.cookie = (v0 >> 16);
1198 stat.seq = (v1 & 0x0000FFFF);
1199 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1200 tmp = (v0 & 0x0000FFFF);
1201 stat.frame_count = ((tmp & 0xF000) >> 12);
1202 stat.rts_count = ((tmp & 0x0F00) >> 8);
1203 stat.supp_reason = ((tmp & 0x001C) >> 2);
1204 stat.pm_indicated = !!(tmp & 0x0080);
1205 stat.intermediate = !!(tmp & 0x0040);
1206 stat.for_ampdu = !!(tmp & 0x0020);
1207 stat.acked = !!(tmp & 0x0002);
1208
1209 b43_handle_txstatus(dev, &stat);
1210 }
1211 }
1212
1213 static void drain_txstatus_queue(struct b43_wldev *dev)
1214 {
1215 u32 dummy;
1216
1217 if (dev->sdev->id.revision < 5)
1218 return;
1219 /* Read all entries from the microcode TXstatus FIFO
1220 * and throw them away.
1221 */
1222 while (1) {
1223 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1224 if (!(dummy & 0x00000001))
1225 break;
1226 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1227 }
1228 }
1229
1230 static u32 b43_jssi_read(struct b43_wldev *dev)
1231 {
1232 u32 val = 0;
1233
1234 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1235 val <<= 16;
1236 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1237
1238 return val;
1239 }
1240
1241 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1242 {
1243 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1244 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1245 }
1246
1247 static void b43_generate_noise_sample(struct b43_wldev *dev)
1248 {
1249 b43_jssi_write(dev, 0x7F7F7F7F);
1250 b43_write32(dev, B43_MMIO_MACCMD,
1251 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1252 }
1253
1254 static void b43_calculate_link_quality(struct b43_wldev *dev)
1255 {
1256 /* Top half of Link Quality calculation. */
1257
1258 if (dev->phy.type != B43_PHYTYPE_G)
1259 return;
1260 if (dev->noisecalc.calculation_running)
1261 return;
1262 dev->noisecalc.calculation_running = 1;
1263 dev->noisecalc.nr_samples = 0;
1264
1265 b43_generate_noise_sample(dev);
1266 }
1267
1268 static void handle_irq_noise(struct b43_wldev *dev)
1269 {
1270 struct b43_phy_g *phy = dev->phy.g;
1271 u16 tmp;
1272 u8 noise[4];
1273 u8 i, j;
1274 s32 average;
1275
1276 /* Bottom half of Link Quality calculation. */
1277
1278 if (dev->phy.type != B43_PHYTYPE_G)
1279 return;
1280
1281 /* Possible race condition: It might be possible that the user
1282 * changed to a different channel in the meantime since we
1283 * started the calculation. We ignore that fact, since it's
1284 * not really that much of a problem. The background noise is
1285 * an estimation only anyway. Slightly wrong results will get damped
1286 * by the averaging of the 8 sample rounds. Additionally the
1287 * value is shortlived. So it will be replaced by the next noise
1288 * calculation round soon. */
1289
1290 B43_WARN_ON(!dev->noisecalc.calculation_running);
1291 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1292 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1293 noise[2] == 0x7F || noise[3] == 0x7F)
1294 goto generate_new;
1295
1296 /* Get the noise samples. */
1297 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1298 i = dev->noisecalc.nr_samples;
1299 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1300 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1301 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1302 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1303 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1304 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1305 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1306 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1307 dev->noisecalc.nr_samples++;
1308 if (dev->noisecalc.nr_samples == 8) {
1309 /* Calculate the Link Quality by the noise samples. */
1310 average = 0;
1311 for (i = 0; i < 8; i++) {
1312 for (j = 0; j < 4; j++)
1313 average += dev->noisecalc.samples[i][j];
1314 }
1315 average /= (8 * 4);
1316 average *= 125;
1317 average += 64;
1318 average /= 128;
1319 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1320 tmp = (tmp / 128) & 0x1F;
1321 if (tmp >= 8)
1322 average += 2;
1323 else
1324 average -= 25;
1325 if (tmp == 8)
1326 average -= 72;
1327 else
1328 average -= 48;
1329
1330 dev->stats.link_noise = average;
1331 dev->noisecalc.calculation_running = 0;
1332 return;
1333 }
1334 generate_new:
1335 b43_generate_noise_sample(dev);
1336 }
1337
1338 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1339 {
1340 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1341 ///TODO: PS TBTT
1342 } else {
1343 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1344 b43_power_saving_ctl_bits(dev, 0);
1345 }
1346 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1347 dev->dfq_valid = 1;
1348 }
1349
1350 static void handle_irq_atim_end(struct b43_wldev *dev)
1351 {
1352 if (dev->dfq_valid) {
1353 b43_write32(dev, B43_MMIO_MACCMD,
1354 b43_read32(dev, B43_MMIO_MACCMD)
1355 | B43_MACCMD_DFQ_VALID);
1356 dev->dfq_valid = 0;
1357 }
1358 }
1359
1360 static void handle_irq_pmq(struct b43_wldev *dev)
1361 {
1362 u32 tmp;
1363
1364 //TODO: AP mode.
1365
1366 while (1) {
1367 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1368 if (!(tmp & 0x00000008))
1369 break;
1370 }
1371 /* 16bit write is odd, but correct. */
1372 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1373 }
1374
1375 static void b43_write_template_common(struct b43_wldev *dev,
1376 const u8 *data, u16 size,
1377 u16 ram_offset,
1378 u16 shm_size_offset, u8 rate)
1379 {
1380 u32 i, tmp;
1381 struct b43_plcp_hdr4 plcp;
1382
1383 plcp.data = 0;
1384 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1385 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1386 ram_offset += sizeof(u32);
1387 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1388 * So leave the first two bytes of the next write blank.
1389 */
1390 tmp = (u32) (data[0]) << 16;
1391 tmp |= (u32) (data[1]) << 24;
1392 b43_ram_write(dev, ram_offset, tmp);
1393 ram_offset += sizeof(u32);
1394 for (i = 2; i < size; i += sizeof(u32)) {
1395 tmp = (u32) (data[i + 0]);
1396 if (i + 1 < size)
1397 tmp |= (u32) (data[i + 1]) << 8;
1398 if (i + 2 < size)
1399 tmp |= (u32) (data[i + 2]) << 16;
1400 if (i + 3 < size)
1401 tmp |= (u32) (data[i + 3]) << 24;
1402 b43_ram_write(dev, ram_offset + i - 2, tmp);
1403 }
1404 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1405 size + sizeof(struct b43_plcp_hdr6));
1406 }
1407
1408 /* Check if the use of the antenna that ieee80211 told us to
1409 * use is possible. This will fall back to DEFAULT.
1410 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1411 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1412 u8 antenna_nr)
1413 {
1414 u8 antenna_mask;
1415
1416 if (antenna_nr == 0) {
1417 /* Zero means "use default antenna". That's always OK. */
1418 return 0;
1419 }
1420
1421 /* Get the mask of available antennas. */
1422 if (dev->phy.gmode)
1423 antenna_mask = dev->sdev->bus->sprom.ant_available_bg;
1424 else
1425 antenna_mask = dev->sdev->bus->sprom.ant_available_a;
1426
1427 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1428 /* This antenna is not available. Fall back to default. */
1429 return 0;
1430 }
1431
1432 return antenna_nr;
1433 }
1434
1435 /* Convert a b43 antenna number value to the PHY TX control value. */
1436 static u16 b43_antenna_to_phyctl(int antenna)
1437 {
1438 switch (antenna) {
1439 case B43_ANTENNA0:
1440 return B43_TXH_PHY_ANT0;
1441 case B43_ANTENNA1:
1442 return B43_TXH_PHY_ANT1;
1443 case B43_ANTENNA2:
1444 return B43_TXH_PHY_ANT2;
1445 case B43_ANTENNA3:
1446 return B43_TXH_PHY_ANT3;
1447 case B43_ANTENNA_AUTO0:
1448 case B43_ANTENNA_AUTO1:
1449 return B43_TXH_PHY_ANT01AUTO;
1450 }
1451 B43_WARN_ON(1);
1452 return 0;
1453 }
1454
1455 static void b43_write_beacon_template(struct b43_wldev *dev,
1456 u16 ram_offset,
1457 u16 shm_size_offset)
1458 {
1459 unsigned int i, len, variable_len;
1460 const struct ieee80211_mgmt *bcn;
1461 const u8 *ie;
1462 bool tim_found = 0;
1463 unsigned int rate;
1464 u16 ctl;
1465 int antenna;
1466 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1467
1468 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1469 len = min((size_t) dev->wl->current_beacon->len,
1470 0x200 - sizeof(struct b43_plcp_hdr6));
1471 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1472
1473 b43_write_template_common(dev, (const u8 *)bcn,
1474 len, ram_offset, shm_size_offset, rate);
1475
1476 /* Write the PHY TX control parameters. */
1477 antenna = B43_ANTENNA_DEFAULT;
1478 antenna = b43_antenna_to_phyctl(antenna);
1479 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1480 /* We can't send beacons with short preamble. Would get PHY errors. */
1481 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1482 ctl &= ~B43_TXH_PHY_ANT;
1483 ctl &= ~B43_TXH_PHY_ENC;
1484 ctl |= antenna;
1485 if (b43_is_cck_rate(rate))
1486 ctl |= B43_TXH_PHY_ENC_CCK;
1487 else
1488 ctl |= B43_TXH_PHY_ENC_OFDM;
1489 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1490
1491 /* Find the position of the TIM and the DTIM_period value
1492 * and write them to SHM. */
1493 ie = bcn->u.beacon.variable;
1494 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1495 for (i = 0; i < variable_len - 2; ) {
1496 uint8_t ie_id, ie_len;
1497
1498 ie_id = ie[i];
1499 ie_len = ie[i + 1];
1500 if (ie_id == 5) {
1501 u16 tim_position;
1502 u16 dtim_period;
1503 /* This is the TIM Information Element */
1504
1505 /* Check whether the ie_len is in the beacon data range. */
1506 if (variable_len < ie_len + 2 + i)
1507 break;
1508 /* A valid TIM is at least 4 bytes long. */
1509 if (ie_len < 4)
1510 break;
1511 tim_found = 1;
1512
1513 tim_position = sizeof(struct b43_plcp_hdr6);
1514 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1515 tim_position += i;
1516
1517 dtim_period = ie[i + 3];
1518
1519 b43_shm_write16(dev, B43_SHM_SHARED,
1520 B43_SHM_SH_TIMBPOS, tim_position);
1521 b43_shm_write16(dev, B43_SHM_SHARED,
1522 B43_SHM_SH_DTIMPER, dtim_period);
1523 break;
1524 }
1525 i += ie_len + 2;
1526 }
1527 if (!tim_found) {
1528 /*
1529 * If ucode wants to modify TIM do it behind the beacon, this
1530 * will happen, for example, when doing mesh networking.
1531 */
1532 b43_shm_write16(dev, B43_SHM_SHARED,
1533 B43_SHM_SH_TIMBPOS,
1534 len + sizeof(struct b43_plcp_hdr6));
1535 b43_shm_write16(dev, B43_SHM_SHARED,
1536 B43_SHM_SH_DTIMPER, 0);
1537 }
1538 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1539 }
1540
1541 static void b43_upload_beacon0(struct b43_wldev *dev)
1542 {
1543 struct b43_wl *wl = dev->wl;
1544
1545 if (wl->beacon0_uploaded)
1546 return;
1547 b43_write_beacon_template(dev, 0x68, 0x18);
1548 wl->beacon0_uploaded = 1;
1549 }
1550
1551 static void b43_upload_beacon1(struct b43_wldev *dev)
1552 {
1553 struct b43_wl *wl = dev->wl;
1554
1555 if (wl->beacon1_uploaded)
1556 return;
1557 b43_write_beacon_template(dev, 0x468, 0x1A);
1558 wl->beacon1_uploaded = 1;
1559 }
1560
1561 static void handle_irq_beacon(struct b43_wldev *dev)
1562 {
1563 struct b43_wl *wl = dev->wl;
1564 u32 cmd, beacon0_valid, beacon1_valid;
1565
1566 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1567 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1568 return;
1569
1570 /* This is the bottom half of the asynchronous beacon update. */
1571
1572 /* Ignore interrupt in the future. */
1573 dev->irq_mask &= ~B43_IRQ_BEACON;
1574
1575 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1576 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1577 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1578
1579 /* Schedule interrupt manually, if busy. */
1580 if (beacon0_valid && beacon1_valid) {
1581 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1582 dev->irq_mask |= B43_IRQ_BEACON;
1583 return;
1584 }
1585
1586 if (unlikely(wl->beacon_templates_virgin)) {
1587 /* We never uploaded a beacon before.
1588 * Upload both templates now, but only mark one valid. */
1589 wl->beacon_templates_virgin = 0;
1590 b43_upload_beacon0(dev);
1591 b43_upload_beacon1(dev);
1592 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1593 cmd |= B43_MACCMD_BEACON0_VALID;
1594 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1595 } else {
1596 if (!beacon0_valid) {
1597 b43_upload_beacon0(dev);
1598 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1599 cmd |= B43_MACCMD_BEACON0_VALID;
1600 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1601 } else if (!beacon1_valid) {
1602 b43_upload_beacon1(dev);
1603 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1604 cmd |= B43_MACCMD_BEACON1_VALID;
1605 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1606 }
1607 }
1608 }
1609
1610 static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1611 {
1612 u32 old_irq_mask = dev->irq_mask;
1613
1614 /* update beacon right away or defer to irq */
1615 handle_irq_beacon(dev);
1616 if (old_irq_mask != dev->irq_mask) {
1617 /* The handler updated the IRQ mask. */
1618 B43_WARN_ON(!dev->irq_mask);
1619 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1620 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1621 } else {
1622 /* Device interrupts are currently disabled. That means
1623 * we just ran the hardirq handler and scheduled the
1624 * IRQ thread. The thread will write the IRQ mask when
1625 * it finished, so there's nothing to do here. Writing
1626 * the mask _here_ would incorrectly re-enable IRQs. */
1627 }
1628 }
1629 }
1630
1631 static void b43_beacon_update_trigger_work(struct work_struct *work)
1632 {
1633 struct b43_wl *wl = container_of(work, struct b43_wl,
1634 beacon_update_trigger);
1635 struct b43_wldev *dev;
1636
1637 mutex_lock(&wl->mutex);
1638 dev = wl->current_dev;
1639 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1640 if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
1641 /* wl->mutex is enough. */
1642 b43_do_beacon_update_trigger_work(dev);
1643 mmiowb();
1644 } else {
1645 spin_lock_irq(&wl->hardirq_lock);
1646 b43_do_beacon_update_trigger_work(dev);
1647 mmiowb();
1648 spin_unlock_irq(&wl->hardirq_lock);
1649 }
1650 }
1651 mutex_unlock(&wl->mutex);
1652 }
1653
1654 /* Asynchronously update the packet templates in template RAM.
1655 * Locking: Requires wl->mutex to be locked. */
1656 static void b43_update_templates(struct b43_wl *wl)
1657 {
1658 struct sk_buff *beacon;
1659
1660 /* This is the top half of the ansynchronous beacon update.
1661 * The bottom half is the beacon IRQ.
1662 * Beacon update must be asynchronous to avoid sending an
1663 * invalid beacon. This can happen for example, if the firmware
1664 * transmits a beacon while we are updating it. */
1665
1666 /* We could modify the existing beacon and set the aid bit in
1667 * the TIM field, but that would probably require resizing and
1668 * moving of data within the beacon template.
1669 * Simply request a new beacon and let mac80211 do the hard work. */
1670 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1671 if (unlikely(!beacon))
1672 return;
1673
1674 if (wl->current_beacon)
1675 dev_kfree_skb_any(wl->current_beacon);
1676 wl->current_beacon = beacon;
1677 wl->beacon0_uploaded = 0;
1678 wl->beacon1_uploaded = 0;
1679 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1680 }
1681
1682 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1683 {
1684 b43_time_lock(dev);
1685 if (dev->sdev->id.revision >= 3) {
1686 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1687 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1688 } else {
1689 b43_write16(dev, 0x606, (beacon_int >> 6));
1690 b43_write16(dev, 0x610, beacon_int);
1691 }
1692 b43_time_unlock(dev);
1693 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1694 }
1695
1696 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1697 {
1698 u16 reason;
1699
1700 /* Read the register that contains the reason code for the panic. */
1701 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1702 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1703
1704 switch (reason) {
1705 default:
1706 b43dbg(dev->wl, "The panic reason is unknown.\n");
1707 /* fallthrough */
1708 case B43_FWPANIC_DIE:
1709 /* Do not restart the controller or firmware.
1710 * The device is nonfunctional from now on.
1711 * Restarting would result in this panic to trigger again,
1712 * so we avoid that recursion. */
1713 break;
1714 case B43_FWPANIC_RESTART:
1715 b43_controller_restart(dev, "Microcode panic");
1716 break;
1717 }
1718 }
1719
1720 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1721 {
1722 unsigned int i, cnt;
1723 u16 reason, marker_id, marker_line;
1724 __le16 *buf;
1725
1726 /* The proprietary firmware doesn't have this IRQ. */
1727 if (!dev->fw.opensource)
1728 return;
1729
1730 /* Read the register that contains the reason code for this IRQ. */
1731 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1732
1733 switch (reason) {
1734 case B43_DEBUGIRQ_PANIC:
1735 b43_handle_firmware_panic(dev);
1736 break;
1737 case B43_DEBUGIRQ_DUMP_SHM:
1738 if (!B43_DEBUG)
1739 break; /* Only with driver debugging enabled. */
1740 buf = kmalloc(4096, GFP_ATOMIC);
1741 if (!buf) {
1742 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1743 goto out;
1744 }
1745 for (i = 0; i < 4096; i += 2) {
1746 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1747 buf[i / 2] = cpu_to_le16(tmp);
1748 }
1749 b43info(dev->wl, "Shared memory dump:\n");
1750 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1751 16, 2, buf, 4096, 1);
1752 kfree(buf);
1753 break;
1754 case B43_DEBUGIRQ_DUMP_REGS:
1755 if (!B43_DEBUG)
1756 break; /* Only with driver debugging enabled. */
1757 b43info(dev->wl, "Microcode register dump:\n");
1758 for (i = 0, cnt = 0; i < 64; i++) {
1759 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1760 if (cnt == 0)
1761 printk(KERN_INFO);
1762 printk("r%02u: 0x%04X ", i, tmp);
1763 cnt++;
1764 if (cnt == 6) {
1765 printk("\n");
1766 cnt = 0;
1767 }
1768 }
1769 printk("\n");
1770 break;
1771 case B43_DEBUGIRQ_MARKER:
1772 if (!B43_DEBUG)
1773 break; /* Only with driver debugging enabled. */
1774 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1775 B43_MARKER_ID_REG);
1776 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1777 B43_MARKER_LINE_REG);
1778 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1779 "at line number %u\n",
1780 marker_id, marker_line);
1781 break;
1782 default:
1783 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1784 reason);
1785 }
1786 out:
1787 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1788 b43_shm_write16(dev, B43_SHM_SCRATCH,
1789 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1790 }
1791
1792 static void b43_do_interrupt_thread(struct b43_wldev *dev)
1793 {
1794 u32 reason;
1795 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1796 u32 merged_dma_reason = 0;
1797 int i;
1798
1799 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1800 return;
1801
1802 reason = dev->irq_reason;
1803 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1804 dma_reason[i] = dev->dma_reason[i];
1805 merged_dma_reason |= dma_reason[i];
1806 }
1807
1808 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1809 b43err(dev->wl, "MAC transmission error\n");
1810
1811 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1812 b43err(dev->wl, "PHY transmission error\n");
1813 rmb();
1814 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1815 atomic_set(&dev->phy.txerr_cnt,
1816 B43_PHY_TX_BADNESS_LIMIT);
1817 b43err(dev->wl, "Too many PHY TX errors, "
1818 "restarting the controller\n");
1819 b43_controller_restart(dev, "PHY TX errors");
1820 }
1821 }
1822
1823 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1824 B43_DMAIRQ_NONFATALMASK))) {
1825 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1826 b43err(dev->wl, "Fatal DMA error: "
1827 "0x%08X, 0x%08X, 0x%08X, "
1828 "0x%08X, 0x%08X, 0x%08X\n",
1829 dma_reason[0], dma_reason[1],
1830 dma_reason[2], dma_reason[3],
1831 dma_reason[4], dma_reason[5]);
1832 b43err(dev->wl, "This device does not support DMA "
1833 "on your system. It will now be switched to PIO.\n");
1834 /* Fall back to PIO transfers if we get fatal DMA errors! */
1835 dev->use_pio = 1;
1836 b43_controller_restart(dev, "DMA error");
1837 return;
1838 }
1839 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1840 b43err(dev->wl, "DMA error: "
1841 "0x%08X, 0x%08X, 0x%08X, "
1842 "0x%08X, 0x%08X, 0x%08X\n",
1843 dma_reason[0], dma_reason[1],
1844 dma_reason[2], dma_reason[3],
1845 dma_reason[4], dma_reason[5]);
1846 }
1847 }
1848
1849 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1850 handle_irq_ucode_debug(dev);
1851 if (reason & B43_IRQ_TBTT_INDI)
1852 handle_irq_tbtt_indication(dev);
1853 if (reason & B43_IRQ_ATIM_END)
1854 handle_irq_atim_end(dev);
1855 if (reason & B43_IRQ_BEACON)
1856 handle_irq_beacon(dev);
1857 if (reason & B43_IRQ_PMQ)
1858 handle_irq_pmq(dev);
1859 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1860 ;/* TODO */
1861 if (reason & B43_IRQ_NOISESAMPLE_OK)
1862 handle_irq_noise(dev);
1863
1864 /* Check the DMA reason registers for received data. */
1865 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1866 if (b43_using_pio_transfers(dev))
1867 b43_pio_rx(dev->pio.rx_queue);
1868 else
1869 b43_dma_rx(dev->dma.rx_ring);
1870 }
1871 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1872 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1873 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1874 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1875 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1876
1877 if (reason & B43_IRQ_TX_OK)
1878 handle_irq_transmit_status(dev);
1879
1880 /* Re-enable interrupts on the device by restoring the current interrupt mask. */
1881 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1882
1883 #if B43_DEBUG
1884 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
1885 dev->irq_count++;
1886 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
1887 if (reason & (1 << i))
1888 dev->irq_bit_count[i]++;
1889 }
1890 }
1891 #endif
1892 }
1893
1894 /* Interrupt thread handler. Handles device interrupts in thread context. */
1895 static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
1896 {
1897 struct b43_wldev *dev = dev_id;
1898
1899 mutex_lock(&dev->wl->mutex);
1900 b43_do_interrupt_thread(dev);
1901 mmiowb();
1902 mutex_unlock(&dev->wl->mutex);
1903
1904 return IRQ_HANDLED;
1905 }
1906
1907 static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
1908 {
1909 u32 reason;
1910
1911 /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
1912 * On SDIO, this runs under wl->mutex. */
1913
1914 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1915 if (reason == 0xffffffff) /* shared IRQ */
1916 return IRQ_NONE;
1917 reason &= dev->irq_mask;
1918 if (!reason)
1919 return IRQ_HANDLED;
1920
1921 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1922 & 0x0001DC00;
1923 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1924 & 0x0000DC00;
1925 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1926 & 0x0000DC00;
1927 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1928 & 0x0001DC00;
1929 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1930 & 0x0000DC00;
1931 /* Unused ring
1932 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1933 & 0x0000DC00;
1934 */
1935
1936 /* ACK the interrupt. */
1937 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1938 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1939 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1940 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1941 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1942 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1943 /* Unused ring
1944 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1945 */
1946
1947 /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
1948 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
1949 /* Save the reason bitmasks for the IRQ thread handler. */
1950 dev->irq_reason = reason;
1951
1952 return IRQ_WAKE_THREAD;
1953 }
1954
1955 /* Interrupt handler top-half. This runs with interrupts disabled. */
1956 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1957 {
1958 struct b43_wldev *dev = dev_id;
1959 irqreturn_t ret;
1960
1961 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
1962 return IRQ_NONE;
1963
1964 spin_lock(&dev->wl->hardirq_lock);
1965 ret = b43_do_interrupt(dev);
1966 mmiowb();
1967 spin_unlock(&dev->wl->hardirq_lock);
1968
1969 return ret;
1970 }
1971
1972 /* SDIO interrupt handler. This runs in process context. */
1973 static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
1974 {
1975 struct b43_wl *wl = dev->wl;
1976 irqreturn_t ret;
1977
1978 mutex_lock(&wl->mutex);
1979
1980 ret = b43_do_interrupt(dev);
1981 if (ret == IRQ_WAKE_THREAD)
1982 b43_do_interrupt_thread(dev);
1983
1984 mutex_unlock(&wl->mutex);
1985 }
1986
1987 void b43_do_release_fw(struct b43_firmware_file *fw)
1988 {
1989 release_firmware(fw->data);
1990 fw->data = NULL;
1991 fw->filename = NULL;
1992 }
1993
1994 static void b43_release_firmware(struct b43_wldev *dev)
1995 {
1996 b43_do_release_fw(&dev->fw.ucode);
1997 b43_do_release_fw(&dev->fw.pcm);
1998 b43_do_release_fw(&dev->fw.initvals);
1999 b43_do_release_fw(&dev->fw.initvals_band);
2000 }
2001
2002 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
2003 {
2004 const char text[] =
2005 "You must go to " \
2006 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
2007 "and download the correct firmware for this driver version. " \
2008 "Please carefully read all instructions on this website.\n";
2009
2010 if (error)
2011 b43err(wl, text);
2012 else
2013 b43warn(wl, text);
2014 }
2015
2016 int b43_do_request_fw(struct b43_request_fw_context *ctx,
2017 const char *name,
2018 struct b43_firmware_file *fw)
2019 {
2020 const struct firmware *blob;
2021 struct b43_fw_header *hdr;
2022 u32 size;
2023 int err;
2024
2025 if (!name) {
2026 /* Don't fetch anything. Free possibly cached firmware. */
2027 /* FIXME: We should probably keep it anyway, to save some headache
2028 * on suspend/resume with multiband devices. */
2029 b43_do_release_fw(fw);
2030 return 0;
2031 }
2032 if (fw->filename) {
2033 if ((fw->type == ctx->req_type) &&
2034 (strcmp(fw->filename, name) == 0))
2035 return 0; /* Already have this fw. */
2036 /* Free the cached firmware first. */
2037 /* FIXME: We should probably do this later after we successfully
2038 * got the new fw. This could reduce headache with multiband devices.
2039 * We could also redesign this to cache the firmware for all possible
2040 * bands all the time. */
2041 b43_do_release_fw(fw);
2042 }
2043
2044 switch (ctx->req_type) {
2045 case B43_FWTYPE_PROPRIETARY:
2046 snprintf(ctx->fwname, sizeof(ctx->fwname),
2047 "b43%s/%s.fw",
2048 modparam_fwpostfix, name);
2049 break;
2050 case B43_FWTYPE_OPENSOURCE:
2051 snprintf(ctx->fwname, sizeof(ctx->fwname),
2052 "b43-open%s/%s.fw",
2053 modparam_fwpostfix, name);
2054 break;
2055 default:
2056 B43_WARN_ON(1);
2057 return -ENOSYS;
2058 }
2059 err = request_firmware(&blob, ctx->fwname, ctx->dev->sdev->dev);
2060 if (err == -ENOENT) {
2061 snprintf(ctx->errors[ctx->req_type],
2062 sizeof(ctx->errors[ctx->req_type]),
2063 "Firmware file \"%s\" not found\n", ctx->fwname);
2064 return err;
2065 } else if (err) {
2066 snprintf(ctx->errors[ctx->req_type],
2067 sizeof(ctx->errors[ctx->req_type]),
2068 "Firmware file \"%s\" request failed (err=%d)\n",
2069 ctx->fwname, err);
2070 return err;
2071 }
2072 if (blob->size < sizeof(struct b43_fw_header))
2073 goto err_format;
2074 hdr = (struct b43_fw_header *)(blob->data);
2075 switch (hdr->type) {
2076 case B43_FW_TYPE_UCODE:
2077 case B43_FW_TYPE_PCM:
2078 size = be32_to_cpu(hdr->size);
2079 if (size != blob->size - sizeof(struct b43_fw_header))
2080 goto err_format;
2081 /* fallthrough */
2082 case B43_FW_TYPE_IV:
2083 if (hdr->ver != 1)
2084 goto err_format;
2085 break;
2086 default:
2087 goto err_format;
2088 }
2089
2090 fw->data = blob;
2091 fw->filename = name;
2092 fw->type = ctx->req_type;
2093
2094 return 0;
2095
2096 err_format:
2097 snprintf(ctx->errors[ctx->req_type],
2098 sizeof(ctx->errors[ctx->req_type]),
2099 "Firmware file \"%s\" format error.\n", ctx->fwname);
2100 release_firmware(blob);
2101
2102 return -EPROTO;
2103 }
2104
2105 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2106 {
2107 struct b43_wldev *dev = ctx->dev;
2108 struct b43_firmware *fw = &ctx->dev->fw;
2109 const u8 rev = ctx->dev->sdev->id.revision;
2110 const char *filename;
2111 u32 tmshigh;
2112 int err;
2113
2114 /* Get microcode */
2115 tmshigh = ssb_read32(dev->sdev, SSB_TMSHIGH);
2116 if ((rev >= 5) && (rev <= 10))
2117 filename = "ucode5";
2118 else if ((rev >= 11) && (rev <= 12))
2119 filename = "ucode11";
2120 else if (rev == 13)
2121 filename = "ucode13";
2122 else if (rev == 14)
2123 filename = "ucode14";
2124 else if (rev == 15)
2125 filename = "ucode15";
2126 else if ((rev >= 16) && (rev <= 20))
2127 filename = "ucode16_mimo";
2128 else
2129 goto err_no_ucode;
2130 err = b43_do_request_fw(ctx, filename, &fw->ucode);
2131 if (err)
2132 goto err_load;
2133
2134 /* Get PCM code */
2135 if ((rev >= 5) && (rev <= 10))
2136 filename = "pcm5";
2137 else if (rev >= 11)
2138 filename = NULL;
2139 else
2140 goto err_no_pcm;
2141 fw->pcm_request_failed = 0;
2142 err = b43_do_request_fw(ctx, filename, &fw->pcm);
2143 if (err == -ENOENT) {
2144 /* We did not find a PCM file? Not fatal, but
2145 * core rev <= 10 must do without hwcrypto then. */
2146 fw->pcm_request_failed = 1;
2147 } else if (err)
2148 goto err_load;
2149
2150 /* Get initvals */
2151 switch (dev->phy.type) {
2152 case B43_PHYTYPE_A:
2153 if ((rev >= 5) && (rev <= 10)) {
2154 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2155 filename = "a0g1initvals5";
2156 else
2157 filename = "a0g0initvals5";
2158 } else
2159 goto err_no_initvals;
2160 break;
2161 case B43_PHYTYPE_G:
2162 if ((rev >= 5) && (rev <= 10))
2163 filename = "b0g0initvals5";
2164 else if (rev >= 13)
2165 filename = "b0g0initvals13";
2166 else
2167 goto err_no_initvals;
2168 break;
2169 case B43_PHYTYPE_N:
2170 if (rev >= 16)
2171 filename = "n0initvals16";
2172 else if ((rev >= 11) && (rev <= 12))
2173 filename = "n0initvals11";
2174 else
2175 goto err_no_initvals;
2176 break;
2177 case B43_PHYTYPE_LP:
2178 if (rev == 13)
2179 filename = "lp0initvals13";
2180 else if (rev == 14)
2181 filename = "lp0initvals14";
2182 else if (rev >= 15)
2183 filename = "lp0initvals15";
2184 else
2185 goto err_no_initvals;
2186 break;
2187 default:
2188 goto err_no_initvals;
2189 }
2190 err = b43_do_request_fw(ctx, filename, &fw->initvals);
2191 if (err)
2192 goto err_load;
2193
2194 /* Get bandswitch initvals */
2195 switch (dev->phy.type) {
2196 case B43_PHYTYPE_A:
2197 if ((rev >= 5) && (rev <= 10)) {
2198 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2199 filename = "a0g1bsinitvals5";
2200 else
2201 filename = "a0g0bsinitvals5";
2202 } else if (rev >= 11)
2203 filename = NULL;
2204 else
2205 goto err_no_initvals;
2206 break;
2207 case B43_PHYTYPE_G:
2208 if ((rev >= 5) && (rev <= 10))
2209 filename = "b0g0bsinitvals5";
2210 else if (rev >= 11)
2211 filename = NULL;
2212 else
2213 goto err_no_initvals;
2214 break;
2215 case B43_PHYTYPE_N:
2216 if (rev >= 16)
2217 filename = "n0bsinitvals16";
2218 else if ((rev >= 11) && (rev <= 12))
2219 filename = "n0bsinitvals11";
2220 else
2221 goto err_no_initvals;
2222 break;
2223 case B43_PHYTYPE_LP:
2224 if (rev == 13)
2225 filename = "lp0bsinitvals13";
2226 else if (rev == 14)
2227 filename = "lp0bsinitvals14";
2228 else if (rev >= 15)
2229 filename = "lp0bsinitvals15";
2230 else
2231 goto err_no_initvals;
2232 break;
2233 default:
2234 goto err_no_initvals;
2235 }
2236 err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2237 if (err)
2238 goto err_load;
2239
2240 return 0;
2241
2242 err_no_ucode:
2243 err = ctx->fatal_failure = -EOPNOTSUPP;
2244 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2245 "is required for your device (wl-core rev %u)\n", rev);
2246 goto error;
2247
2248 err_no_pcm:
2249 err = ctx->fatal_failure = -EOPNOTSUPP;
2250 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2251 "is required for your device (wl-core rev %u)\n", rev);
2252 goto error;
2253
2254 err_no_initvals:
2255 err = ctx->fatal_failure = -EOPNOTSUPP;
2256 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2257 "is required for your device (wl-core rev %u)\n", rev);
2258 goto error;
2259
2260 err_load:
2261 /* We failed to load this firmware image. The error message
2262 * already is in ctx->errors. Return and let our caller decide
2263 * what to do. */
2264 goto error;
2265
2266 error:
2267 b43_release_firmware(dev);
2268 return err;
2269 }
2270
2271 static int b43_request_firmware(struct b43_wldev *dev)
2272 {
2273 struct b43_request_fw_context *ctx;
2274 unsigned int i;
2275 int err;
2276 const char *errmsg;
2277
2278 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2279 if (!ctx)
2280 return -ENOMEM;
2281 ctx->dev = dev;
2282
2283 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2284 err = b43_try_request_fw(ctx);
2285 if (!err)
2286 goto out; /* Successfully loaded it. */
2287 err = ctx->fatal_failure;
2288 if (err)
2289 goto out;
2290
2291 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2292 err = b43_try_request_fw(ctx);
2293 if (!err)
2294 goto out; /* Successfully loaded it. */
2295 err = ctx->fatal_failure;
2296 if (err)
2297 goto out;
2298
2299 /* Could not find a usable firmware. Print the errors. */
2300 for (i = 0; i < B43_NR_FWTYPES; i++) {
2301 errmsg = ctx->errors[i];
2302 if (strlen(errmsg))
2303 b43err(dev->wl, errmsg);
2304 }
2305 b43_print_fw_helptext(dev->wl, 1);
2306 err = -ENOENT;
2307
2308 out:
2309 kfree(ctx);
2310 return err;
2311 }
2312
2313 static int b43_upload_microcode(struct b43_wldev *dev)
2314 {
2315 struct wiphy *wiphy = dev->wl->hw->wiphy;
2316 const size_t hdr_len = sizeof(struct b43_fw_header);
2317 const __be32 *data;
2318 unsigned int i, len;
2319 u16 fwrev, fwpatch, fwdate, fwtime;
2320 u32 tmp, macctl;
2321 int err = 0;
2322
2323 /* Jump the microcode PSM to offset 0 */
2324 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2325 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2326 macctl |= B43_MACCTL_PSM_JMP0;
2327 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2328 /* Zero out all microcode PSM registers and shared memory. */
2329 for (i = 0; i < 64; i++)
2330 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2331 for (i = 0; i < 4096; i += 2)
2332 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2333
2334 /* Upload Microcode. */
2335 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2336 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2337 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2338 for (i = 0; i < len; i++) {
2339 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2340 udelay(10);
2341 }
2342
2343 if (dev->fw.pcm.data) {
2344 /* Upload PCM data. */
2345 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2346 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2347 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2348 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2349 /* No need for autoinc bit in SHM_HW */
2350 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2351 for (i = 0; i < len; i++) {
2352 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2353 udelay(10);
2354 }
2355 }
2356
2357 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2358
2359 /* Start the microcode PSM */
2360 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2361 macctl &= ~B43_MACCTL_PSM_JMP0;
2362 macctl |= B43_MACCTL_PSM_RUN;
2363 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2364
2365 /* Wait for the microcode to load and respond */
2366 i = 0;
2367 while (1) {
2368 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2369 if (tmp == B43_IRQ_MAC_SUSPENDED)
2370 break;
2371 i++;
2372 if (i >= 20) {
2373 b43err(dev->wl, "Microcode not responding\n");
2374 b43_print_fw_helptext(dev->wl, 1);
2375 err = -ENODEV;
2376 goto error;
2377 }
2378 msleep(50);
2379 }
2380 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2381
2382 /* Get and check the revisions. */
2383 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2384 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2385 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2386 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2387
2388 if (fwrev <= 0x128) {
2389 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2390 "binary drivers older than version 4.x is unsupported. "
2391 "You must upgrade your firmware files.\n");
2392 b43_print_fw_helptext(dev->wl, 1);
2393 err = -EOPNOTSUPP;
2394 goto error;
2395 }
2396 dev->fw.rev = fwrev;
2397 dev->fw.patch = fwpatch;
2398 dev->fw.opensource = (fwdate == 0xFFFF);
2399
2400 /* Default to use-all-queues. */
2401 dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues;
2402 dev->qos_enabled = !!modparam_qos;
2403 /* Default to firmware/hardware crypto acceleration. */
2404 dev->hwcrypto_enabled = 1;
2405
2406 if (dev->fw.opensource) {
2407 u16 fwcapa;
2408
2409 /* Patchlevel info is encoded in the "time" field. */
2410 dev->fw.patch = fwtime;
2411 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2412 dev->fw.rev, dev->fw.patch);
2413
2414 fwcapa = b43_fwcapa_read(dev);
2415 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2416 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2417 /* Disable hardware crypto and fall back to software crypto. */
2418 dev->hwcrypto_enabled = 0;
2419 }
2420 if (!(fwcapa & B43_FWCAPA_QOS)) {
2421 b43info(dev->wl, "QoS not supported by firmware\n");
2422 /* Disable QoS. Tweak hw->queues to 1. It will be restored before
2423 * ieee80211_unregister to make sure the networking core can
2424 * properly free possible resources. */
2425 dev->wl->hw->queues = 1;
2426 dev->qos_enabled = 0;
2427 }
2428 } else {
2429 b43info(dev->wl, "Loading firmware version %u.%u "
2430 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2431 fwrev, fwpatch,
2432 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2433 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2434 if (dev->fw.pcm_request_failed) {
2435 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2436 "Hardware accelerated cryptography is disabled.\n");
2437 b43_print_fw_helptext(dev->wl, 0);
2438 }
2439 }
2440
2441 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
2442 dev->fw.rev, dev->fw.patch);
2443 wiphy->hw_version = dev->sdev->id.coreid;
2444
2445 if (b43_is_old_txhdr_format(dev)) {
2446 /* We're over the deadline, but we keep support for old fw
2447 * until it turns out to be in major conflict with something new. */
2448 b43warn(dev->wl, "You are using an old firmware image. "
2449 "Support for old firmware will be removed soon "
2450 "(official deadline was July 2008).\n");
2451 b43_print_fw_helptext(dev->wl, 0);
2452 }
2453
2454 return 0;
2455
2456 error:
2457 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2458 macctl &= ~B43_MACCTL_PSM_RUN;
2459 macctl |= B43_MACCTL_PSM_JMP0;
2460 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2461
2462 return err;
2463 }
2464
2465 static int b43_write_initvals(struct b43_wldev *dev,
2466 const struct b43_iv *ivals,
2467 size_t count,
2468 size_t array_size)
2469 {
2470 const struct b43_iv *iv;
2471 u16 offset;
2472 size_t i;
2473 bool bit32;
2474
2475 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2476 iv = ivals;
2477 for (i = 0; i < count; i++) {
2478 if (array_size < sizeof(iv->offset_size))
2479 goto err_format;
2480 array_size -= sizeof(iv->offset_size);
2481 offset = be16_to_cpu(iv->offset_size);
2482 bit32 = !!(offset & B43_IV_32BIT);
2483 offset &= B43_IV_OFFSET_MASK;
2484 if (offset >= 0x1000)
2485 goto err_format;
2486 if (bit32) {
2487 u32 value;
2488
2489 if (array_size < sizeof(iv->data.d32))
2490 goto err_format;
2491 array_size -= sizeof(iv->data.d32);
2492
2493 value = get_unaligned_be32(&iv->data.d32);
2494 b43_write32(dev, offset, value);
2495
2496 iv = (const struct b43_iv *)((const uint8_t *)iv +
2497 sizeof(__be16) +
2498 sizeof(__be32));
2499 } else {
2500 u16 value;
2501
2502 if (array_size < sizeof(iv->data.d16))
2503 goto err_format;
2504 array_size -= sizeof(iv->data.d16);
2505
2506 value = be16_to_cpu(iv->data.d16);
2507 b43_write16(dev, offset, value);
2508
2509 iv = (const struct b43_iv *)((const uint8_t *)iv +
2510 sizeof(__be16) +
2511 sizeof(__be16));
2512 }
2513 }
2514 if (array_size)
2515 goto err_format;
2516
2517 return 0;
2518
2519 err_format:
2520 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2521 b43_print_fw_helptext(dev->wl, 1);
2522
2523 return -EPROTO;
2524 }
2525
2526 static int b43_upload_initvals(struct b43_wldev *dev)
2527 {
2528 const size_t hdr_len = sizeof(struct b43_fw_header);
2529 const struct b43_fw_header *hdr;
2530 struct b43_firmware *fw = &dev->fw;
2531 const struct b43_iv *ivals;
2532 size_t count;
2533 int err;
2534
2535 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2536 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2537 count = be32_to_cpu(hdr->size);
2538 err = b43_write_initvals(dev, ivals, count,
2539 fw->initvals.data->size - hdr_len);
2540 if (err)
2541 goto out;
2542 if (fw->initvals_band.data) {
2543 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2544 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2545 count = be32_to_cpu(hdr->size);
2546 err = b43_write_initvals(dev, ivals, count,
2547 fw->initvals_band.data->size - hdr_len);
2548 if (err)
2549 goto out;
2550 }
2551 out:
2552
2553 return err;
2554 }
2555
2556 /* Initialize the GPIOs
2557 * http://bcm-specs.sipsolutions.net/GPIO
2558 */
2559 static struct ssb_device *b43_ssb_gpio_dev(struct b43_wldev *dev)
2560 {
2561 struct ssb_bus *bus = dev->sdev->bus;
2562
2563 #ifdef CONFIG_SSB_DRIVER_PCICORE
2564 return (bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev);
2565 #else
2566 return bus->chipco.dev;
2567 #endif
2568 }
2569
2570 static int b43_gpio_init(struct b43_wldev *dev)
2571 {
2572 struct ssb_device *gpiodev;
2573 u32 mask, set;
2574
2575 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2576 & ~B43_MACCTL_GPOUTSMSK);
2577
2578 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2579 | 0x000F);
2580
2581 mask = 0x0000001F;
2582 set = 0x0000000F;
2583 if (dev->sdev->bus->chip_id == 0x4301) {
2584 mask |= 0x0060;
2585 set |= 0x0060;
2586 }
2587 if (0 /* FIXME: conditional unknown */ ) {
2588 b43_write16(dev, B43_MMIO_GPIO_MASK,
2589 b43_read16(dev, B43_MMIO_GPIO_MASK)
2590 | 0x0100);
2591 mask |= 0x0180;
2592 set |= 0x0180;
2593 }
2594 if (dev->sdev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2595 b43_write16(dev, B43_MMIO_GPIO_MASK,
2596 b43_read16(dev, B43_MMIO_GPIO_MASK)
2597 | 0x0200);
2598 mask |= 0x0200;
2599 set |= 0x0200;
2600 }
2601 if (dev->sdev->id.revision >= 2)
2602 mask |= 0x0010; /* FIXME: This is redundant. */
2603
2604 gpiodev = b43_ssb_gpio_dev(dev);
2605 if (gpiodev)
2606 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2607 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2608 & mask) | set);
2609
2610 return 0;
2611 }
2612
2613 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2614 static void b43_gpio_cleanup(struct b43_wldev *dev)
2615 {
2616 struct ssb_device *gpiodev;
2617
2618 gpiodev = b43_ssb_gpio_dev(dev);
2619 if (gpiodev)
2620 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2621 }
2622
2623 /* http://bcm-specs.sipsolutions.net/EnableMac */
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 */
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
2689 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
2690 void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
2691 {
2692 u32 tmslow = ssb_read32(dev->sdev, SSB_TMSLOW);
2693 if (on)
2694 tmslow |= B43_TMSLOW_MACPHYCLKEN;
2695 else
2696 tmslow &= ~B43_TMSLOW_MACPHYCLKEN;
2697 ssb_write32(dev->sdev, SSB_TMSLOW, tmslow);
2698 }
2699
2700 static void b43_adjust_opmode(struct b43_wldev *dev)
2701 {
2702 struct b43_wl *wl = dev->wl;
2703 u32 ctl;
2704 u16 cfp_pretbtt;
2705
2706 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2707 /* Reset status to STA infrastructure mode. */
2708 ctl &= ~B43_MACCTL_AP;
2709 ctl &= ~B43_MACCTL_KEEP_CTL;
2710 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2711 ctl &= ~B43_MACCTL_KEEP_BAD;
2712 ctl &= ~B43_MACCTL_PROMISC;
2713 ctl &= ~B43_MACCTL_BEACPROMISC;
2714 ctl |= B43_MACCTL_INFRA;
2715
2716 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2717 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2718 ctl |= B43_MACCTL_AP;
2719 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2720 ctl &= ~B43_MACCTL_INFRA;
2721
2722 if (wl->filter_flags & FIF_CONTROL)
2723 ctl |= B43_MACCTL_KEEP_CTL;
2724 if (wl->filter_flags & FIF_FCSFAIL)
2725 ctl |= B43_MACCTL_KEEP_BAD;
2726 if (wl->filter_flags & FIF_PLCPFAIL)
2727 ctl |= B43_MACCTL_KEEP_BADPLCP;
2728 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2729 ctl |= B43_MACCTL_PROMISC;
2730 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2731 ctl |= B43_MACCTL_BEACPROMISC;
2732
2733 /* Workaround: On old hardware the HW-MAC-address-filter
2734 * doesn't work properly, so always run promisc in filter
2735 * it in software. */
2736 if (dev->sdev->id.revision <= 4)
2737 ctl |= B43_MACCTL_PROMISC;
2738
2739 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2740
2741 cfp_pretbtt = 2;
2742 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2743 if (dev->sdev->bus->chip_id == 0x4306 &&
2744 dev->sdev->bus->chip_rev == 3)
2745 cfp_pretbtt = 100;
2746 else
2747 cfp_pretbtt = 50;
2748 }
2749 b43_write16(dev, 0x612, cfp_pretbtt);
2750
2751 /* FIXME: We don't currently implement the PMQ mechanism,
2752 * so always disable it. If we want to implement PMQ,
2753 * we need to enable it here (clear DISCPMQ) in AP mode.
2754 */
2755 if (0 /* ctl & B43_MACCTL_AP */) {
2756 b43_write32(dev, B43_MMIO_MACCTL,
2757 b43_read32(dev, B43_MMIO_MACCTL)
2758 & ~B43_MACCTL_DISCPMQ);
2759 } else {
2760 b43_write32(dev, B43_MMIO_MACCTL,
2761 b43_read32(dev, B43_MMIO_MACCTL)
2762 | B43_MACCTL_DISCPMQ);
2763 }
2764 }
2765
2766 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2767 {
2768 u16 offset;
2769
2770 if (is_ofdm) {
2771 offset = 0x480;
2772 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2773 } else {
2774 offset = 0x4C0;
2775 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2776 }
2777 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2778 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2779 }
2780
2781 static void b43_rate_memory_init(struct b43_wldev *dev)
2782 {
2783 switch (dev->phy.type) {
2784 case B43_PHYTYPE_A:
2785 case B43_PHYTYPE_G:
2786 case B43_PHYTYPE_N:
2787 case B43_PHYTYPE_LP:
2788 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2789 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2790 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2791 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2792 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2793 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2794 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2795 if (dev->phy.type == B43_PHYTYPE_A)
2796 break;
2797 /* fallthrough */
2798 case B43_PHYTYPE_B:
2799 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2800 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2801 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2802 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2803 break;
2804 default:
2805 B43_WARN_ON(1);
2806 }
2807 }
2808
2809 /* Set the default values for the PHY TX Control Words. */
2810 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2811 {
2812 u16 ctl = 0;
2813
2814 ctl |= B43_TXH_PHY_ENC_CCK;
2815 ctl |= B43_TXH_PHY_ANT01AUTO;
2816 ctl |= B43_TXH_PHY_TXPWR;
2817
2818 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2819 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2820 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2821 }
2822
2823 /* Set the TX-Antenna for management frames sent by firmware. */
2824 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2825 {
2826 u16 ant;
2827 u16 tmp;
2828
2829 ant = b43_antenna_to_phyctl(antenna);
2830
2831 /* For ACK/CTS */
2832 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2833 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2834 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2835 /* For Probe Resposes */
2836 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2837 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2838 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2839 }
2840
2841 /* This is the opposite of b43_chip_init() */
2842 static void b43_chip_exit(struct b43_wldev *dev)
2843 {
2844 b43_phy_exit(dev);
2845 b43_gpio_cleanup(dev);
2846 /* firmware is released later */
2847 }
2848
2849 /* Initialize the chip
2850 * http://bcm-specs.sipsolutions.net/ChipInit
2851 */
2852 static int b43_chip_init(struct b43_wldev *dev)
2853 {
2854 struct b43_phy *phy = &dev->phy;
2855 int err;
2856 u32 macctl;
2857 u16 value16;
2858
2859 /* Initialize the MAC control */
2860 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2861 if (dev->phy.gmode)
2862 macctl |= B43_MACCTL_GMODE;
2863 macctl |= B43_MACCTL_INFRA;
2864 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2865
2866 err = b43_request_firmware(dev);
2867 if (err)
2868 goto out;
2869 err = b43_upload_microcode(dev);
2870 if (err)
2871 goto out; /* firmware is released later */
2872
2873 err = b43_gpio_init(dev);
2874 if (err)
2875 goto out; /* firmware is released later */
2876
2877 err = b43_upload_initvals(dev);
2878 if (err)
2879 goto err_gpio_clean;
2880
2881 /* Turn the Analog on and initialize the PHY. */
2882 phy->ops->switch_analog(dev, 1);
2883 err = b43_phy_init(dev);
2884 if (err)
2885 goto err_gpio_clean;
2886
2887 /* Disable Interference Mitigation. */
2888 if (phy->ops->interf_mitigation)
2889 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2890
2891 /* Select the antennae */
2892 if (phy->ops->set_rx_antenna)
2893 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2894 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2895
2896 if (phy->type == B43_PHYTYPE_B) {
2897 value16 = b43_read16(dev, 0x005E);
2898 value16 |= 0x0004;
2899 b43_write16(dev, 0x005E, value16);
2900 }
2901 b43_write32(dev, 0x0100, 0x01000000);
2902 if (dev->sdev->id.revision < 5)
2903 b43_write32(dev, 0x010C, 0x01000000);
2904
2905 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2906 & ~B43_MACCTL_INFRA);
2907 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2908 | B43_MACCTL_INFRA);
2909
2910 /* Probe Response Timeout value */
2911 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2912 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2913
2914 /* Initially set the wireless operation mode. */
2915 b43_adjust_opmode(dev);
2916
2917 if (dev->sdev->id.revision < 3) {
2918 b43_write16(dev, 0x060E, 0x0000);
2919 b43_write16(dev, 0x0610, 0x8000);
2920 b43_write16(dev, 0x0604, 0x0000);
2921 b43_write16(dev, 0x0606, 0x0200);
2922 } else {
2923 b43_write32(dev, 0x0188, 0x80000000);
2924 b43_write32(dev, 0x018C, 0x02000000);
2925 }
2926 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2927 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2928 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2929 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2930 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2931 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2932 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2933
2934 b43_mac_phy_clock_set(dev, true);
2935
2936 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2937 dev->sdev->bus->chipco.fast_pwrup_delay);
2938
2939 err = 0;
2940 b43dbg(dev->wl, "Chip initialized\n");
2941 out:
2942 return err;
2943
2944 err_gpio_clean:
2945 b43_gpio_cleanup(dev);
2946 return err;
2947 }
2948
2949 static void b43_periodic_every60sec(struct b43_wldev *dev)
2950 {
2951 const struct b43_phy_operations *ops = dev->phy.ops;
2952
2953 if (ops->pwork_60sec)
2954 ops->pwork_60sec(dev);
2955
2956 /* Force check the TX power emission now. */
2957 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2958 }
2959
2960 static void b43_periodic_every30sec(struct b43_wldev *dev)
2961 {
2962 /* Update device statistics. */
2963 b43_calculate_link_quality(dev);
2964 }
2965
2966 static void b43_periodic_every15sec(struct b43_wldev *dev)
2967 {
2968 struct b43_phy *phy = &dev->phy;
2969 u16 wdr;
2970
2971 if (dev->fw.opensource) {
2972 /* Check if the firmware is still alive.
2973 * It will reset the watchdog counter to 0 in its idle loop. */
2974 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2975 if (unlikely(wdr)) {
2976 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2977 b43_controller_restart(dev, "Firmware watchdog");
2978 return;
2979 } else {
2980 b43_shm_write16(dev, B43_SHM_SCRATCH,
2981 B43_WATCHDOG_REG, 1);
2982 }
2983 }
2984
2985 if (phy->ops->pwork_15sec)
2986 phy->ops->pwork_15sec(dev);
2987
2988 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2989 wmb();
2990
2991 #if B43_DEBUG
2992 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
2993 unsigned int i;
2994
2995 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
2996 dev->irq_count / 15,
2997 dev->tx_count / 15,
2998 dev->rx_count / 15);
2999 dev->irq_count = 0;
3000 dev->tx_count = 0;
3001 dev->rx_count = 0;
3002 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
3003 if (dev->irq_bit_count[i]) {
3004 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
3005 dev->irq_bit_count[i] / 15, i, (1 << i));
3006 dev->irq_bit_count[i] = 0;
3007 }
3008 }
3009 }
3010 #endif
3011 }
3012
3013 static void do_periodic_work(struct b43_wldev *dev)
3014 {
3015 unsigned int state;
3016
3017 state = dev->periodic_state;
3018 if (state % 4 == 0)
3019 b43_periodic_every60sec(dev);
3020 if (state % 2 == 0)
3021 b43_periodic_every30sec(dev);
3022 b43_periodic_every15sec(dev);
3023 }
3024
3025 /* Periodic work locking policy:
3026 * The whole periodic work handler is protected by
3027 * wl->mutex. If another lock is needed somewhere in the
3028 * pwork callchain, it's acquired in-place, where it's needed.
3029 */
3030 static void b43_periodic_work_handler(struct work_struct *work)
3031 {
3032 struct b43_wldev *dev = container_of(work, struct b43_wldev,
3033 periodic_work.work);
3034 struct b43_wl *wl = dev->wl;
3035 unsigned long delay;
3036
3037 mutex_lock(&wl->mutex);
3038
3039 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
3040 goto out;
3041 if (b43_debug(dev, B43_DBG_PWORK_STOP))
3042 goto out_requeue;
3043
3044 do_periodic_work(dev);
3045
3046 dev->periodic_state++;
3047 out_requeue:
3048 if (b43_debug(dev, B43_DBG_PWORK_FAST))
3049 delay = msecs_to_jiffies(50);
3050 else
3051 delay = round_jiffies_relative(HZ * 15);
3052 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
3053 out:
3054 mutex_unlock(&wl->mutex);
3055 }
3056
3057 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3058 {
3059 struct delayed_work *work = &dev->periodic_work;
3060
3061 dev->periodic_state = 0;
3062 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3063 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3064 }
3065
3066 /* Check if communication with the device works correctly. */
3067 static int b43_validate_chipaccess(struct b43_wldev *dev)
3068 {
3069 u32 v, backup0, backup4;
3070
3071 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3072 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3073
3074 /* Check for read/write and endianness problems. */
3075 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3076 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3077 goto error;
3078 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3079 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3080 goto error;
3081
3082 /* Check if unaligned 32bit SHM_SHARED access works properly.
3083 * However, don't bail out on failure, because it's noncritical. */
3084 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3085 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3086 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3087 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3088 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3089 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3090 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3091 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3092 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3093 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3094 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3095 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3096
3097 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3098 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3099
3100 if ((dev->sdev->id.revision >= 3) && (dev->sdev->id.revision <= 10)) {
3101 /* The 32bit register shadows the two 16bit registers
3102 * with update sideeffects. Validate this. */
3103 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3104 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3105 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3106 goto error;
3107 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3108 goto error;
3109 }
3110 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3111
3112 v = b43_read32(dev, B43_MMIO_MACCTL);
3113 v |= B43_MACCTL_GMODE;
3114 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3115 goto error;
3116
3117 return 0;
3118 error:
3119 b43err(dev->wl, "Failed to validate the chipaccess\n");
3120 return -ENODEV;
3121 }
3122
3123 static void b43_security_init(struct b43_wldev *dev)
3124 {
3125 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3126 /* KTP is a word address, but we address SHM bytewise.
3127 * So multiply by two.
3128 */
3129 dev->ktp *= 2;
3130 /* Number of RCMTA address slots */
3131 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3132 /* Clear the key memory. */
3133 b43_clear_keys(dev);
3134 }
3135
3136 #ifdef CONFIG_B43_HWRNG
3137 static int b43_rng_read(struct hwrng *rng, u32 *data)
3138 {
3139 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3140 struct b43_wldev *dev;
3141 int count = -ENODEV;
3142
3143 mutex_lock(&wl->mutex);
3144 dev = wl->current_dev;
3145 if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3146 *data = b43_read16(dev, B43_MMIO_RNG);
3147 count = sizeof(u16);
3148 }
3149 mutex_unlock(&wl->mutex);
3150
3151 return count;
3152 }
3153 #endif /* CONFIG_B43_HWRNG */
3154
3155 static void b43_rng_exit(struct b43_wl *wl)
3156 {
3157 #ifdef CONFIG_B43_HWRNG
3158 if (wl->rng_initialized)
3159 hwrng_unregister(&wl->rng);
3160 #endif /* CONFIG_B43_HWRNG */
3161 }
3162
3163 static int b43_rng_init(struct b43_wl *wl)
3164 {
3165 int err = 0;
3166
3167 #ifdef CONFIG_B43_HWRNG
3168 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3169 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3170 wl->rng.name = wl->rng_name;
3171 wl->rng.data_read = b43_rng_read;
3172 wl->rng.priv = (unsigned long)wl;
3173 wl->rng_initialized = 1;
3174 err = hwrng_register(&wl->rng);
3175 if (err) {
3176 wl->rng_initialized = 0;
3177 b43err(wl, "Failed to register the random "
3178 "number generator (%d)\n", err);
3179 }
3180 #endif /* CONFIG_B43_HWRNG */
3181
3182 return err;
3183 }
3184
3185 static void b43_tx_work(struct work_struct *work)
3186 {
3187 struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3188 struct b43_wldev *dev;
3189 struct sk_buff *skb;
3190 int err = 0;
3191
3192 mutex_lock(&wl->mutex);
3193 dev = wl->current_dev;
3194 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3195 mutex_unlock(&wl->mutex);
3196 return;
3197 }
3198
3199 while (skb_queue_len(&wl->tx_queue)) {
3200 skb = skb_dequeue(&wl->tx_queue);
3201
3202 if (b43_using_pio_transfers(dev))
3203 err = b43_pio_tx(dev, skb);
3204 else
3205 err = b43_dma_tx(dev, skb);
3206 if (unlikely(err))
3207 dev_kfree_skb(skb); /* Drop it */
3208 }
3209
3210 #if B43_DEBUG
3211 dev->tx_count++;
3212 #endif
3213 mutex_unlock(&wl->mutex);
3214 }
3215
3216 static void b43_op_tx(struct ieee80211_hw *hw,
3217 struct sk_buff *skb)
3218 {
3219 struct b43_wl *wl = hw_to_b43_wl(hw);
3220
3221 if (unlikely(skb->len < 2 + 2 + 6)) {
3222 /* Too short, this can't be a valid frame. */
3223 dev_kfree_skb_any(skb);
3224 return;
3225 }
3226 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3227
3228 skb_queue_tail(&wl->tx_queue, skb);
3229 ieee80211_queue_work(wl->hw, &wl->tx_work);
3230 }
3231
3232 static void b43_qos_params_upload(struct b43_wldev *dev,
3233 const struct ieee80211_tx_queue_params *p,
3234 u16 shm_offset)
3235 {
3236 u16 params[B43_NR_QOSPARAMS];
3237 int bslots, tmp;
3238 unsigned int i;
3239
3240 if (!dev->qos_enabled)
3241 return;
3242
3243 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3244
3245 memset(&params, 0, sizeof(params));
3246
3247 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3248 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3249 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3250 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3251 params[B43_QOSPARAM_AIFS] = p->aifs;
3252 params[B43_QOSPARAM_BSLOTS] = bslots;
3253 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3254
3255 for (i = 0; i < ARRAY_SIZE(params); i++) {
3256 if (i == B43_QOSPARAM_STATUS) {
3257 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3258 shm_offset + (i * 2));
3259 /* Mark the parameters as updated. */
3260 tmp |= 0x100;
3261 b43_shm_write16(dev, B43_SHM_SHARED,
3262 shm_offset + (i * 2),
3263 tmp);
3264 } else {
3265 b43_shm_write16(dev, B43_SHM_SHARED,
3266 shm_offset + (i * 2),
3267 params[i]);
3268 }
3269 }
3270 }
3271
3272 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3273 static const u16 b43_qos_shm_offsets[] = {
3274 /* [mac80211-queue-nr] = SHM_OFFSET, */
3275 [0] = B43_QOS_VOICE,
3276 [1] = B43_QOS_VIDEO,
3277 [2] = B43_QOS_BESTEFFORT,
3278 [3] = B43_QOS_BACKGROUND,
3279 };
3280
3281 /* Update all QOS parameters in hardware. */
3282 static void b43_qos_upload_all(struct b43_wldev *dev)
3283 {
3284 struct b43_wl *wl = dev->wl;
3285 struct b43_qos_params *params;
3286 unsigned int i;
3287
3288 if (!dev->qos_enabled)
3289 return;
3290
3291 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3292 ARRAY_SIZE(wl->qos_params));
3293
3294 b43_mac_suspend(dev);
3295 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3296 params = &(wl->qos_params[i]);
3297 b43_qos_params_upload(dev, &(params->p),
3298 b43_qos_shm_offsets[i]);
3299 }
3300 b43_mac_enable(dev);
3301 }
3302
3303 static void b43_qos_clear(struct b43_wl *wl)
3304 {
3305 struct b43_qos_params *params;
3306 unsigned int i;
3307
3308 /* Initialize QoS parameters to sane defaults. */
3309
3310 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3311 ARRAY_SIZE(wl->qos_params));
3312
3313 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3314 params = &(wl->qos_params[i]);
3315
3316 switch (b43_qos_shm_offsets[i]) {
3317 case B43_QOS_VOICE:
3318 params->p.txop = 0;
3319 params->p.aifs = 2;
3320 params->p.cw_min = 0x0001;
3321 params->p.cw_max = 0x0001;
3322 break;
3323 case B43_QOS_VIDEO:
3324 params->p.txop = 0;
3325 params->p.aifs = 2;
3326 params->p.cw_min = 0x0001;
3327 params->p.cw_max = 0x0001;
3328 break;
3329 case B43_QOS_BESTEFFORT:
3330 params->p.txop = 0;
3331 params->p.aifs = 3;
3332 params->p.cw_min = 0x0001;
3333 params->p.cw_max = 0x03FF;
3334 break;
3335 case B43_QOS_BACKGROUND:
3336 params->p.txop = 0;
3337 params->p.aifs = 7;
3338 params->p.cw_min = 0x0001;
3339 params->p.cw_max = 0x03FF;
3340 break;
3341 default:
3342 B43_WARN_ON(1);
3343 }
3344 }
3345 }
3346
3347 /* Initialize the core's QOS capabilities */
3348 static void b43_qos_init(struct b43_wldev *dev)
3349 {
3350 if (!dev->qos_enabled) {
3351 /* Disable QOS support. */
3352 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3353 b43_write16(dev, B43_MMIO_IFSCTL,
3354 b43_read16(dev, B43_MMIO_IFSCTL)
3355 & ~B43_MMIO_IFSCTL_USE_EDCF);
3356 b43dbg(dev->wl, "QoS disabled\n");
3357 return;
3358 }
3359
3360 /* Upload the current QOS parameters. */
3361 b43_qos_upload_all(dev);
3362
3363 /* Enable QOS support. */
3364 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3365 b43_write16(dev, B43_MMIO_IFSCTL,
3366 b43_read16(dev, B43_MMIO_IFSCTL)
3367 | B43_MMIO_IFSCTL_USE_EDCF);
3368 b43dbg(dev->wl, "QoS enabled\n");
3369 }
3370
3371 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3372 const struct ieee80211_tx_queue_params *params)
3373 {
3374 struct b43_wl *wl = hw_to_b43_wl(hw);
3375 struct b43_wldev *dev;
3376 unsigned int queue = (unsigned int)_queue;
3377 int err = -ENODEV;
3378
3379 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3380 /* Queue not available or don't support setting
3381 * params on this queue. Return success to not
3382 * confuse mac80211. */
3383 return 0;
3384 }
3385 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3386 ARRAY_SIZE(wl->qos_params));
3387
3388 mutex_lock(&wl->mutex);
3389 dev = wl->current_dev;
3390 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3391 goto out_unlock;
3392
3393 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3394 b43_mac_suspend(dev);
3395 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3396 b43_qos_shm_offsets[queue]);
3397 b43_mac_enable(dev);
3398 err = 0;
3399
3400 out_unlock:
3401 mutex_unlock(&wl->mutex);
3402
3403 return err;
3404 }
3405
3406 static int b43_op_get_stats(struct ieee80211_hw *hw,
3407 struct ieee80211_low_level_stats *stats)
3408 {
3409 struct b43_wl *wl = hw_to_b43_wl(hw);
3410
3411 mutex_lock(&wl->mutex);
3412 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3413 mutex_unlock(&wl->mutex);
3414
3415 return 0;
3416 }
3417
3418 static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
3419 {
3420 struct b43_wl *wl = hw_to_b43_wl(hw);
3421 struct b43_wldev *dev;
3422 u64 tsf;
3423
3424 mutex_lock(&wl->mutex);
3425 dev = wl->current_dev;
3426
3427 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3428 b43_tsf_read(dev, &tsf);
3429 else
3430 tsf = 0;
3431
3432 mutex_unlock(&wl->mutex);
3433
3434 return tsf;
3435 }
3436
3437 static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3438 {
3439 struct b43_wl *wl = hw_to_b43_wl(hw);
3440 struct b43_wldev *dev;
3441
3442 mutex_lock(&wl->mutex);
3443 dev = wl->current_dev;
3444
3445 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3446 b43_tsf_write(dev, tsf);
3447
3448 mutex_unlock(&wl->mutex);
3449 }
3450
3451 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3452 {
3453 struct ssb_device *sdev = dev->sdev;
3454 u32 tmslow;
3455
3456 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3457 tmslow &= ~B43_TMSLOW_GMODE;
3458 tmslow |= B43_TMSLOW_PHYRESET;
3459 tmslow |= SSB_TMSLOW_FGC;
3460 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3461 msleep(1);
3462
3463 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3464 tmslow &= ~SSB_TMSLOW_FGC;
3465 tmslow |= B43_TMSLOW_PHYRESET;
3466 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3467 msleep(1);
3468 }
3469
3470 static const char *band_to_string(enum ieee80211_band band)
3471 {
3472 switch (band) {
3473 case IEEE80211_BAND_5GHZ:
3474 return "5";
3475 case IEEE80211_BAND_2GHZ:
3476 return "2.4";
3477 default:
3478 break;
3479 }
3480 B43_WARN_ON(1);
3481 return "";
3482 }
3483
3484 /* Expects wl->mutex locked */
3485 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3486 {
3487 struct b43_wldev *up_dev = NULL;
3488 struct b43_wldev *down_dev;
3489 struct b43_wldev *d;
3490 int err;
3491 bool uninitialized_var(gmode);
3492 int prev_status;
3493
3494 /* Find a device and PHY which supports the band. */
3495 list_for_each_entry(d, &wl->devlist, list) {
3496 switch (chan->band) {
3497 case IEEE80211_BAND_5GHZ:
3498 if (d->phy.supports_5ghz) {
3499 up_dev = d;
3500 gmode = 0;
3501 }
3502 break;
3503 case IEEE80211_BAND_2GHZ:
3504 if (d->phy.supports_2ghz) {
3505 up_dev = d;
3506 gmode = 1;
3507 }
3508 break;
3509 default:
3510 B43_WARN_ON(1);
3511 return -EINVAL;
3512 }
3513 if (up_dev)
3514 break;
3515 }
3516 if (!up_dev) {
3517 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3518 band_to_string(chan->band));
3519 return -ENODEV;
3520 }
3521 if ((up_dev == wl->current_dev) &&
3522 (!!wl->current_dev->phy.gmode == !!gmode)) {
3523 /* This device is already running. */
3524 return 0;
3525 }
3526 b43dbg(wl, "Switching to %s-GHz band\n",
3527 band_to_string(chan->band));
3528 down_dev = wl->current_dev;
3529
3530 prev_status = b43_status(down_dev);
3531 /* Shutdown the currently running core. */
3532 if (prev_status >= B43_STAT_STARTED)
3533 down_dev = b43_wireless_core_stop(down_dev);
3534 if (prev_status >= B43_STAT_INITIALIZED)
3535 b43_wireless_core_exit(down_dev);
3536
3537 if (down_dev != up_dev) {
3538 /* We switch to a different core, so we put PHY into
3539 * RESET on the old core. */
3540 b43_put_phy_into_reset(down_dev);
3541 }
3542
3543 /* Now start the new core. */
3544 up_dev->phy.gmode = gmode;
3545 if (prev_status >= B43_STAT_INITIALIZED) {
3546 err = b43_wireless_core_init(up_dev);
3547 if (err) {
3548 b43err(wl, "Fatal: Could not initialize device for "
3549 "selected %s-GHz band\n",
3550 band_to_string(chan->band));
3551 goto init_failure;
3552 }
3553 }
3554 if (prev_status >= B43_STAT_STARTED) {
3555 err = b43_wireless_core_start(up_dev);
3556 if (err) {
3557 b43err(wl, "Fatal: Coult not start device for "
3558 "selected %s-GHz band\n",
3559 band_to_string(chan->band));
3560 b43_wireless_core_exit(up_dev);
3561 goto init_failure;
3562 }
3563 }
3564 B43_WARN_ON(b43_status(up_dev) != prev_status);
3565
3566 wl->current_dev = up_dev;
3567
3568 return 0;
3569 init_failure:
3570 /* Whoops, failed to init the new core. No core is operating now. */
3571 wl->current_dev = NULL;
3572 return err;
3573 }
3574
3575 /* Write the short and long frame retry limit values. */
3576 static void b43_set_retry_limits(struct b43_wldev *dev,
3577 unsigned int short_retry,
3578 unsigned int long_retry)
3579 {
3580 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3581 * the chip-internal counter. */
3582 short_retry = min(short_retry, (unsigned int)0xF);
3583 long_retry = min(long_retry, (unsigned int)0xF);
3584
3585 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3586 short_retry);
3587 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3588 long_retry);
3589 }
3590
3591 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3592 {
3593 struct b43_wl *wl = hw_to_b43_wl(hw);
3594 struct b43_wldev *dev;
3595 struct b43_phy *phy;
3596 struct ieee80211_conf *conf = &hw->conf;
3597 int antenna;
3598 int err = 0;
3599
3600 mutex_lock(&wl->mutex);
3601
3602 /* Switch the band (if necessary). This might change the active core. */
3603 err = b43_switch_band(wl, conf->channel);
3604 if (err)
3605 goto out_unlock_mutex;
3606 dev = wl->current_dev;
3607 phy = &dev->phy;
3608
3609 if (conf_is_ht(conf))
3610 phy->is_40mhz =
3611 (conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf));
3612 else
3613 phy->is_40mhz = false;
3614
3615 b43_mac_suspend(dev);
3616
3617 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3618 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3619 conf->long_frame_max_tx_count);
3620 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3621 if (!changed)
3622 goto out_mac_enable;
3623
3624 /* Switch to the requested channel.
3625 * The firmware takes care of races with the TX handler. */
3626 if (conf->channel->hw_value != phy->channel)
3627 b43_switch_channel(dev, conf->channel->hw_value);
3628
3629 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
3630
3631 /* Adjust the desired TX power level. */
3632 if (conf->power_level != 0) {
3633 if (conf->power_level != phy->desired_txpower) {
3634 phy->desired_txpower = conf->power_level;
3635 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3636 B43_TXPWR_IGNORE_TSSI);
3637 }
3638 }
3639
3640 /* Antennas for RX and management frame TX. */
3641 antenna = B43_ANTENNA_DEFAULT;
3642 b43_mgmtframe_txantenna(dev, antenna);
3643 antenna = B43_ANTENNA_DEFAULT;
3644 if (phy->ops->set_rx_antenna)
3645 phy->ops->set_rx_antenna(dev, antenna);
3646
3647 if (wl->radio_enabled != phy->radio_on) {
3648 if (wl->radio_enabled) {
3649 b43_software_rfkill(dev, false);
3650 b43info(dev->wl, "Radio turned on by software\n");
3651 if (!dev->radio_hw_enable) {
3652 b43info(dev->wl, "The hardware RF-kill button "
3653 "still turns the radio physically off. "
3654 "Press the button to turn it on.\n");
3655 }
3656 } else {
3657 b43_software_rfkill(dev, true);
3658 b43info(dev->wl, "Radio turned off by software\n");
3659 }
3660 }
3661
3662 out_mac_enable:
3663 b43_mac_enable(dev);
3664 out_unlock_mutex:
3665 mutex_unlock(&wl->mutex);
3666
3667 return err;
3668 }
3669
3670 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3671 {
3672 struct ieee80211_supported_band *sband =
3673 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3674 struct ieee80211_rate *rate;
3675 int i;
3676 u16 basic, direct, offset, basic_offset, rateptr;
3677
3678 for (i = 0; i < sband->n_bitrates; i++) {
3679 rate = &sband->bitrates[i];
3680
3681 if (b43_is_cck_rate(rate->hw_value)) {
3682 direct = B43_SHM_SH_CCKDIRECT;
3683 basic = B43_SHM_SH_CCKBASIC;
3684 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3685 offset &= 0xF;
3686 } else {
3687 direct = B43_SHM_SH_OFDMDIRECT;
3688 basic = B43_SHM_SH_OFDMBASIC;
3689 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3690 offset &= 0xF;
3691 }
3692
3693 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3694
3695 if (b43_is_cck_rate(rate->hw_value)) {
3696 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3697 basic_offset &= 0xF;
3698 } else {
3699 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3700 basic_offset &= 0xF;
3701 }
3702
3703 /*
3704 * Get the pointer that we need to point to
3705 * from the direct map
3706 */
3707 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3708 direct + 2 * basic_offset);
3709 /* and write it to the basic map */
3710 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3711 rateptr);
3712 }
3713 }
3714
3715 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3716 struct ieee80211_vif *vif,
3717 struct ieee80211_bss_conf *conf,
3718 u32 changed)
3719 {
3720 struct b43_wl *wl = hw_to_b43_wl(hw);
3721 struct b43_wldev *dev;
3722
3723 mutex_lock(&wl->mutex);
3724
3725 dev = wl->current_dev;
3726 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3727 goto out_unlock_mutex;
3728
3729 B43_WARN_ON(wl->vif != vif);
3730
3731 if (changed & BSS_CHANGED_BSSID) {
3732 if (conf->bssid)
3733 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3734 else
3735 memset(wl->bssid, 0, ETH_ALEN);
3736 }
3737
3738 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3739 if (changed & BSS_CHANGED_BEACON &&
3740 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3741 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3742 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3743 b43_update_templates(wl);
3744
3745 if (changed & BSS_CHANGED_BSSID)
3746 b43_write_mac_bssid_templates(dev);
3747 }
3748
3749 b43_mac_suspend(dev);
3750
3751 /* Update templates for AP/mesh mode. */
3752 if (changed & BSS_CHANGED_BEACON_INT &&
3753 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3754 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3755 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3756 b43_set_beacon_int(dev, conf->beacon_int);
3757
3758 if (changed & BSS_CHANGED_BASIC_RATES)
3759 b43_update_basic_rates(dev, conf->basic_rates);
3760
3761 if (changed & BSS_CHANGED_ERP_SLOT) {
3762 if (conf->use_short_slot)
3763 b43_short_slot_timing_enable(dev);
3764 else
3765 b43_short_slot_timing_disable(dev);
3766 }
3767
3768 b43_mac_enable(dev);
3769 out_unlock_mutex:
3770 mutex_unlock(&wl->mutex);
3771 }
3772
3773 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3774 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3775 struct ieee80211_key_conf *key)
3776 {
3777 struct b43_wl *wl = hw_to_b43_wl(hw);
3778 struct b43_wldev *dev;
3779 u8 algorithm;
3780 u8 index;
3781 int err;
3782 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
3783
3784 if (modparam_nohwcrypt)
3785 return -ENOSPC; /* User disabled HW-crypto */
3786
3787 mutex_lock(&wl->mutex);
3788
3789 dev = wl->current_dev;
3790 err = -ENODEV;
3791 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3792 goto out_unlock;
3793
3794 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
3795 /* We don't have firmware for the crypto engine.
3796 * Must use software-crypto. */
3797 err = -EOPNOTSUPP;
3798 goto out_unlock;
3799 }
3800
3801 err = -EINVAL;
3802 switch (key->cipher) {
3803 case WLAN_CIPHER_SUITE_WEP40:
3804 algorithm = B43_SEC_ALGO_WEP40;
3805 break;
3806 case WLAN_CIPHER_SUITE_WEP104:
3807 algorithm = B43_SEC_ALGO_WEP104;
3808 break;
3809 case WLAN_CIPHER_SUITE_TKIP:
3810 algorithm = B43_SEC_ALGO_TKIP;
3811 break;
3812 case WLAN_CIPHER_SUITE_CCMP:
3813 algorithm = B43_SEC_ALGO_AES;
3814 break;
3815 default:
3816 B43_WARN_ON(1);
3817 goto out_unlock;
3818 }
3819 index = (u8) (key->keyidx);
3820 if (index > 3)
3821 goto out_unlock;
3822
3823 switch (cmd) {
3824 case SET_KEY:
3825 if (algorithm == B43_SEC_ALGO_TKIP &&
3826 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3827 !modparam_hwtkip)) {
3828 /* We support only pairwise key */
3829 err = -EOPNOTSUPP;
3830 goto out_unlock;
3831 }
3832
3833 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3834 if (WARN_ON(!sta)) {
3835 err = -EOPNOTSUPP;
3836 goto out_unlock;
3837 }
3838 /* Pairwise key with an assigned MAC address. */
3839 err = b43_key_write(dev, -1, algorithm,
3840 key->key, key->keylen,
3841 sta->addr, key);
3842 } else {
3843 /* Group key */
3844 err = b43_key_write(dev, index, algorithm,
3845 key->key, key->keylen, NULL, key);
3846 }
3847 if (err)
3848 goto out_unlock;
3849
3850 if (algorithm == B43_SEC_ALGO_WEP40 ||
3851 algorithm == B43_SEC_ALGO_WEP104) {
3852 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3853 } else {
3854 b43_hf_write(dev,
3855 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3856 }
3857 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3858 if (algorithm == B43_SEC_ALGO_TKIP)
3859 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3860 break;
3861 case DISABLE_KEY: {
3862 err = b43_key_clear(dev, key->hw_key_idx);
3863 if (err)
3864 goto out_unlock;
3865 break;
3866 }
3867 default:
3868 B43_WARN_ON(1);
3869 }
3870
3871 out_unlock:
3872 if (!err) {
3873 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3874 "mac: %pM\n",
3875 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3876 sta ? sta->addr : bcast_addr);
3877 b43_dump_keymemory(dev);
3878 }
3879 mutex_unlock(&wl->mutex);
3880
3881 return err;
3882 }
3883
3884 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3885 unsigned int changed, unsigned int *fflags,
3886 u64 multicast)
3887 {
3888 struct b43_wl *wl = hw_to_b43_wl(hw);
3889 struct b43_wldev *dev;
3890
3891 mutex_lock(&wl->mutex);
3892 dev = wl->current_dev;
3893 if (!dev) {
3894 *fflags = 0;
3895 goto out_unlock;
3896 }
3897
3898 *fflags &= FIF_PROMISC_IN_BSS |
3899 FIF_ALLMULTI |
3900 FIF_FCSFAIL |
3901 FIF_PLCPFAIL |
3902 FIF_CONTROL |
3903 FIF_OTHER_BSS |
3904 FIF_BCN_PRBRESP_PROMISC;
3905
3906 changed &= FIF_PROMISC_IN_BSS |
3907 FIF_ALLMULTI |
3908 FIF_FCSFAIL |
3909 FIF_PLCPFAIL |
3910 FIF_CONTROL |
3911 FIF_OTHER_BSS |
3912 FIF_BCN_PRBRESP_PROMISC;
3913
3914 wl->filter_flags = *fflags;
3915
3916 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3917 b43_adjust_opmode(dev);
3918
3919 out_unlock:
3920 mutex_unlock(&wl->mutex);
3921 }
3922
3923 /* Locking: wl->mutex
3924 * Returns the current dev. This might be different from the passed in dev,
3925 * because the core might be gone away while we unlocked the mutex. */
3926 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
3927 {
3928 struct b43_wl *wl = dev->wl;
3929 struct b43_wldev *orig_dev;
3930 u32 mask;
3931
3932 redo:
3933 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3934 return dev;
3935
3936 /* Cancel work. Unlock to avoid deadlocks. */
3937 mutex_unlock(&wl->mutex);
3938 cancel_delayed_work_sync(&dev->periodic_work);
3939 cancel_work_sync(&wl->tx_work);
3940 mutex_lock(&wl->mutex);
3941 dev = wl->current_dev;
3942 if (!dev || b43_status(dev) < B43_STAT_STARTED) {
3943 /* Whoops, aliens ate up the device while we were unlocked. */
3944 return dev;
3945 }
3946
3947 /* Disable interrupts on the device. */
3948 b43_set_status(dev, B43_STAT_INITIALIZED);
3949 if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
3950 /* wl->mutex is locked. That is enough. */
3951 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3952 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3953 } else {
3954 spin_lock_irq(&wl->hardirq_lock);
3955 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3956 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3957 spin_unlock_irq(&wl->hardirq_lock);
3958 }
3959 /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
3960 orig_dev = dev;
3961 mutex_unlock(&wl->mutex);
3962 if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
3963 b43_sdio_free_irq(dev);
3964 } else {
3965 synchronize_irq(dev->sdev->irq);
3966 free_irq(dev->sdev->irq, dev);
3967 }
3968 mutex_lock(&wl->mutex);
3969 dev = wl->current_dev;
3970 if (!dev)
3971 return dev;
3972 if (dev != orig_dev) {
3973 if (b43_status(dev) >= B43_STAT_STARTED)
3974 goto redo;
3975 return dev;
3976 }
3977 mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
3978 B43_WARN_ON(mask != 0xFFFFFFFF && mask);
3979
3980 /* Drain the TX queue */
3981 while (skb_queue_len(&wl->tx_queue))
3982 dev_kfree_skb(skb_dequeue(&wl->tx_queue));
3983
3984 b43_mac_suspend(dev);
3985 b43_leds_exit(dev);
3986 b43dbg(wl, "Wireless interface stopped\n");
3987
3988 return dev;
3989 }
3990
3991 /* Locking: wl->mutex */
3992 static int b43_wireless_core_start(struct b43_wldev *dev)
3993 {
3994 int err;
3995
3996 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3997
3998 drain_txstatus_queue(dev);
3999 if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
4000 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
4001 if (err) {
4002 b43err(dev->wl, "Cannot request SDIO IRQ\n");
4003 goto out;
4004 }
4005 } else {
4006 err = request_threaded_irq(dev->sdev->irq, b43_interrupt_handler,
4007 b43_interrupt_thread_handler,
4008 IRQF_SHARED, KBUILD_MODNAME, dev);
4009 if (err) {
4010 b43err(dev->wl, "Cannot request IRQ-%d\n",
4011 dev->sdev->irq);
4012 goto out;
4013 }
4014 }
4015
4016 /* We are ready to run. */
4017 ieee80211_wake_queues(dev->wl->hw);
4018 b43_set_status(dev, B43_STAT_STARTED);
4019
4020 /* Start data flow (TX/RX). */
4021 b43_mac_enable(dev);
4022 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
4023
4024 /* Start maintainance work */
4025 b43_periodic_tasks_setup(dev);
4026
4027 b43_leds_init(dev);
4028
4029 b43dbg(dev->wl, "Wireless interface started\n");
4030 out:
4031 return err;
4032 }
4033
4034 /* Get PHY and RADIO versioning numbers */
4035 static int b43_phy_versioning(struct b43_wldev *dev)
4036 {
4037 struct b43_phy *phy = &dev->phy;
4038 u32 tmp;
4039 u8 analog_type;
4040 u8 phy_type;
4041 u8 phy_rev;
4042 u16 radio_manuf;
4043 u16 radio_ver;
4044 u16 radio_rev;
4045 int unsupported = 0;
4046
4047 /* Get PHY versioning */
4048 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4049 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4050 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4051 phy_rev = (tmp & B43_PHYVER_VERSION);
4052 switch (phy_type) {
4053 case B43_PHYTYPE_A:
4054 if (phy_rev >= 4)
4055 unsupported = 1;
4056 break;
4057 case B43_PHYTYPE_B:
4058 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
4059 && phy_rev != 7)
4060 unsupported = 1;
4061 break;
4062 case B43_PHYTYPE_G:
4063 if (phy_rev > 9)
4064 unsupported = 1;
4065 break;
4066 #ifdef CONFIG_B43_PHY_N
4067 case B43_PHYTYPE_N:
4068 if (phy_rev > 9)
4069 unsupported = 1;
4070 break;
4071 #endif
4072 #ifdef CONFIG_B43_PHY_LP
4073 case B43_PHYTYPE_LP:
4074 if (phy_rev > 2)
4075 unsupported = 1;
4076 break;
4077 #endif
4078 default:
4079 unsupported = 1;
4080 };
4081 if (unsupported) {
4082 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
4083 "(Analog %u, Type %u, Revision %u)\n",
4084 analog_type, phy_type, phy_rev);
4085 return -EOPNOTSUPP;
4086 }
4087 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
4088 analog_type, phy_type, phy_rev);
4089
4090 /* Get RADIO versioning */
4091 if (dev->sdev->bus->chip_id == 0x4317) {
4092 if (dev->sdev->bus->chip_rev == 0)
4093 tmp = 0x3205017F;
4094 else if (dev->sdev->bus->chip_rev == 1)
4095 tmp = 0x4205017F;
4096 else
4097 tmp = 0x5205017F;
4098 } else {
4099 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4100 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4101 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4102 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
4103 }
4104 radio_manuf = (tmp & 0x00000FFF);
4105 radio_ver = (tmp & 0x0FFFF000) >> 12;
4106 radio_rev = (tmp & 0xF0000000) >> 28;
4107 if (radio_manuf != 0x17F /* Broadcom */)
4108 unsupported = 1;
4109 switch (phy_type) {
4110 case B43_PHYTYPE_A:
4111 if (radio_ver != 0x2060)
4112 unsupported = 1;
4113 if (radio_rev != 1)
4114 unsupported = 1;
4115 if (radio_manuf != 0x17F)
4116 unsupported = 1;
4117 break;
4118 case B43_PHYTYPE_B:
4119 if ((radio_ver & 0xFFF0) != 0x2050)
4120 unsupported = 1;
4121 break;
4122 case B43_PHYTYPE_G:
4123 if (radio_ver != 0x2050)
4124 unsupported = 1;
4125 break;
4126 case B43_PHYTYPE_N:
4127 if (radio_ver != 0x2055 && radio_ver != 0x2056)
4128 unsupported = 1;
4129 break;
4130 case B43_PHYTYPE_LP:
4131 if (radio_ver != 0x2062 && radio_ver != 0x2063)
4132 unsupported = 1;
4133 break;
4134 default:
4135 B43_WARN_ON(1);
4136 }
4137 if (unsupported) {
4138 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
4139 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
4140 radio_manuf, radio_ver, radio_rev);
4141 return -EOPNOTSUPP;
4142 }
4143 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
4144 radio_manuf, radio_ver, radio_rev);
4145
4146 phy->radio_manuf = radio_manuf;
4147 phy->radio_ver = radio_ver;
4148 phy->radio_rev = radio_rev;
4149
4150 phy->analog = analog_type;
4151 phy->type = phy_type;
4152 phy->rev = phy_rev;
4153
4154 return 0;
4155 }
4156
4157 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4158 struct b43_phy *phy)
4159 {
4160 phy->hardware_power_control = !!modparam_hwpctl;
4161 phy->next_txpwr_check_time = jiffies;
4162 /* PHY TX errors counter. */
4163 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4164
4165 #if B43_DEBUG
4166 phy->phy_locked = 0;
4167 phy->radio_locked = 0;
4168 #endif
4169 }
4170
4171 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4172 {
4173 dev->dfq_valid = 0;
4174
4175 /* Assume the radio is enabled. If it's not enabled, the state will
4176 * immediately get fixed on the first periodic work run. */
4177 dev->radio_hw_enable = 1;
4178
4179 /* Stats */
4180 memset(&dev->stats, 0, sizeof(dev->stats));
4181
4182 setup_struct_phy_for_init(dev, &dev->phy);
4183
4184 /* IRQ related flags */
4185 dev->irq_reason = 0;
4186 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4187 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4188 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4189 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4190
4191 dev->mac_suspended = 1;
4192
4193 /* Noise calculation context */
4194 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4195 }
4196
4197 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4198 {
4199 struct ssb_sprom *sprom = &dev->sdev->bus->sprom;
4200 u64 hf;
4201
4202 if (!modparam_btcoex)
4203 return;
4204 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4205 return;
4206 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4207 return;
4208
4209 hf = b43_hf_read(dev);
4210 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4211 hf |= B43_HF_BTCOEXALT;
4212 else
4213 hf |= B43_HF_BTCOEX;
4214 b43_hf_write(dev, hf);
4215 }
4216
4217 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4218 {
4219 if (!modparam_btcoex)
4220 return;
4221 //TODO
4222 }
4223
4224 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4225 {
4226 struct ssb_bus *bus = dev->sdev->bus;
4227 u32 tmp;
4228
4229 if ((bus->chip_id == 0x4311 && bus->chip_rev == 2) ||
4230 (bus->chip_id == 0x4312)) {
4231 tmp = ssb_read32(dev->sdev, SSB_IMCFGLO);
4232 tmp &= ~SSB_IMCFGLO_REQTO;
4233 tmp &= ~SSB_IMCFGLO_SERTO;
4234 tmp |= 0x3;
4235 ssb_write32(dev->sdev, SSB_IMCFGLO, tmp);
4236 ssb_commit_settings(bus);
4237 }
4238 }
4239
4240 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4241 {
4242 u16 pu_delay;
4243
4244 /* The time value is in microseconds. */
4245 if (dev->phy.type == B43_PHYTYPE_A)
4246 pu_delay = 3700;
4247 else
4248 pu_delay = 1050;
4249 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4250 pu_delay = 500;
4251 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4252 pu_delay = max(pu_delay, (u16)2400);
4253
4254 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4255 }
4256
4257 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4258 static void b43_set_pretbtt(struct b43_wldev *dev)
4259 {
4260 u16 pretbtt;
4261
4262 /* The time value is in microseconds. */
4263 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4264 pretbtt = 2;
4265 } else {
4266 if (dev->phy.type == B43_PHYTYPE_A)
4267 pretbtt = 120;
4268 else
4269 pretbtt = 250;
4270 }
4271 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4272 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4273 }
4274
4275 /* Shutdown a wireless core */
4276 /* Locking: wl->mutex */
4277 static void b43_wireless_core_exit(struct b43_wldev *dev)
4278 {
4279 u32 macctl;
4280
4281 B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4282 if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4283 return;
4284
4285 /* Unregister HW RNG driver */
4286 b43_rng_exit(dev->wl);
4287
4288 b43_set_status(dev, B43_STAT_UNINIT);
4289
4290 /* Stop the microcode PSM. */
4291 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4292 macctl &= ~B43_MACCTL_PSM_RUN;
4293 macctl |= B43_MACCTL_PSM_JMP0;
4294 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4295
4296 b43_dma_free(dev);
4297 b43_pio_free(dev);
4298 b43_chip_exit(dev);
4299 dev->phy.ops->switch_analog(dev, 0);
4300 if (dev->wl->current_beacon) {
4301 dev_kfree_skb_any(dev->wl->current_beacon);
4302 dev->wl->current_beacon = NULL;
4303 }
4304
4305 ssb_device_disable(dev->sdev, 0);
4306 ssb_bus_may_powerdown(dev->sdev->bus);
4307 }
4308
4309 /* Initialize a wireless core */
4310 static int b43_wireless_core_init(struct b43_wldev *dev)
4311 {
4312 struct ssb_bus *bus = dev->sdev->bus;
4313 struct ssb_sprom *sprom = &bus->sprom;
4314 struct b43_phy *phy = &dev->phy;
4315 int err;
4316 u64 hf;
4317 u32 tmp;
4318
4319 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4320
4321 err = ssb_bus_powerup(bus, 0);
4322 if (err)
4323 goto out;
4324 if (!ssb_device_is_enabled(dev->sdev)) {
4325 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4326 b43_wireless_core_reset(dev, tmp);
4327 }
4328
4329 /* Reset all data structures. */
4330 setup_struct_wldev_for_init(dev);
4331 phy->ops->prepare_structs(dev);
4332
4333 /* Enable IRQ routing to this device. */
4334 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->sdev);
4335
4336 b43_imcfglo_timeouts_workaround(dev);
4337 b43_bluetooth_coext_disable(dev);
4338 if (phy->ops->prepare_hardware) {
4339 err = phy->ops->prepare_hardware(dev);
4340 if (err)
4341 goto err_busdown;
4342 }
4343 err = b43_chip_init(dev);
4344 if (err)
4345 goto err_busdown;
4346 b43_shm_write16(dev, B43_SHM_SHARED,
4347 B43_SHM_SH_WLCOREREV, dev->sdev->id.revision);
4348 hf = b43_hf_read(dev);
4349 if (phy->type == B43_PHYTYPE_G) {
4350 hf |= B43_HF_SYMW;
4351 if (phy->rev == 1)
4352 hf |= B43_HF_GDCW;
4353 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4354 hf |= B43_HF_OFDMPABOOST;
4355 }
4356 if (phy->radio_ver == 0x2050) {
4357 if (phy->radio_rev == 6)
4358 hf |= B43_HF_4318TSSI;
4359 if (phy->radio_rev < 6)
4360 hf |= B43_HF_VCORECALC;
4361 }
4362 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4363 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4364 #ifdef CONFIG_SSB_DRIVER_PCICORE
4365 if ((bus->bustype == SSB_BUSTYPE_PCI) &&
4366 (bus->pcicore.dev->id.revision <= 10))
4367 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4368 #endif
4369 hf &= ~B43_HF_SKCFPUP;
4370 b43_hf_write(dev, hf);
4371
4372 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4373 B43_DEFAULT_LONG_RETRY_LIMIT);
4374 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4375 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4376
4377 /* Disable sending probe responses from firmware.
4378 * Setting the MaxTime to one usec will always trigger
4379 * a timeout, so we never send any probe resp.
4380 * A timeout of zero is infinite. */
4381 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4382
4383 b43_rate_memory_init(dev);
4384 b43_set_phytxctl_defaults(dev);
4385
4386 /* Minimum Contention Window */
4387 if (phy->type == B43_PHYTYPE_B)
4388 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4389 else
4390 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4391 /* Maximum Contention Window */
4392 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4393
4394 if ((dev->sdev->bus->bustype == SSB_BUSTYPE_PCMCIA) ||
4395 (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) ||
4396 dev->use_pio) {
4397 dev->__using_pio_transfers = 1;
4398 err = b43_pio_init(dev);
4399 } else {
4400 dev->__using_pio_transfers = 0;
4401 err = b43_dma_init(dev);
4402 }
4403 if (err)
4404 goto err_chip_exit;
4405 b43_qos_init(dev);
4406 b43_set_synth_pu_delay(dev, 1);
4407 b43_bluetooth_coext_enable(dev);
4408
4409 ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4410 b43_upload_card_macaddress(dev);
4411 b43_security_init(dev);
4412
4413 ieee80211_wake_queues(dev->wl->hw);
4414
4415 b43_set_status(dev, B43_STAT_INITIALIZED);
4416
4417 /* Register HW RNG driver */
4418 b43_rng_init(dev->wl);
4419
4420 out:
4421 return err;
4422
4423 err_chip_exit:
4424 b43_chip_exit(dev);
4425 err_busdown:
4426 ssb_bus_may_powerdown(bus);
4427 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4428 return err;
4429 }
4430
4431 static int b43_op_add_interface(struct ieee80211_hw *hw,
4432 struct ieee80211_vif *vif)
4433 {
4434 struct b43_wl *wl = hw_to_b43_wl(hw);
4435 struct b43_wldev *dev;
4436 int err = -EOPNOTSUPP;
4437
4438 /* TODO: allow WDS/AP devices to coexist */
4439
4440 if (vif->type != NL80211_IFTYPE_AP &&
4441 vif->type != NL80211_IFTYPE_MESH_POINT &&
4442 vif->type != NL80211_IFTYPE_STATION &&
4443 vif->type != NL80211_IFTYPE_WDS &&
4444 vif->type != NL80211_IFTYPE_ADHOC)
4445 return -EOPNOTSUPP;
4446
4447 mutex_lock(&wl->mutex);
4448 if (wl->operating)
4449 goto out_mutex_unlock;
4450
4451 b43dbg(wl, "Adding Interface type %d\n", vif->type);
4452
4453 dev = wl->current_dev;
4454 wl->operating = 1;
4455 wl->vif = vif;
4456 wl->if_type = vif->type;
4457 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
4458
4459 b43_adjust_opmode(dev);
4460 b43_set_pretbtt(dev);
4461 b43_set_synth_pu_delay(dev, 0);
4462 b43_upload_card_macaddress(dev);
4463
4464 err = 0;
4465 out_mutex_unlock:
4466 mutex_unlock(&wl->mutex);
4467
4468 return err;
4469 }
4470
4471 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4472 struct ieee80211_vif *vif)
4473 {
4474 struct b43_wl *wl = hw_to_b43_wl(hw);
4475 struct b43_wldev *dev = wl->current_dev;
4476
4477 b43dbg(wl, "Removing Interface type %d\n", vif->type);
4478
4479 mutex_lock(&wl->mutex);
4480
4481 B43_WARN_ON(!wl->operating);
4482 B43_WARN_ON(wl->vif != vif);
4483 wl->vif = NULL;
4484
4485 wl->operating = 0;
4486
4487 b43_adjust_opmode(dev);
4488 memset(wl->mac_addr, 0, ETH_ALEN);
4489 b43_upload_card_macaddress(dev);
4490
4491 mutex_unlock(&wl->mutex);
4492 }
4493
4494 static int b43_op_start(struct ieee80211_hw *hw)
4495 {
4496 struct b43_wl *wl = hw_to_b43_wl(hw);
4497 struct b43_wldev *dev = wl->current_dev;
4498 int did_init = 0;
4499 int err = 0;
4500
4501 /* Kill all old instance specific information to make sure
4502 * the card won't use it in the short timeframe between start
4503 * and mac80211 reconfiguring it. */
4504 memset(wl->bssid, 0, ETH_ALEN);
4505 memset(wl->mac_addr, 0, ETH_ALEN);
4506 wl->filter_flags = 0;
4507 wl->radiotap_enabled = 0;
4508 b43_qos_clear(wl);
4509 wl->beacon0_uploaded = 0;
4510 wl->beacon1_uploaded = 0;
4511 wl->beacon_templates_virgin = 1;
4512 wl->radio_enabled = 1;
4513
4514 mutex_lock(&wl->mutex);
4515
4516 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4517 err = b43_wireless_core_init(dev);
4518 if (err)
4519 goto out_mutex_unlock;
4520 did_init = 1;
4521 }
4522
4523 if (b43_status(dev) < B43_STAT_STARTED) {
4524 err = b43_wireless_core_start(dev);
4525 if (err) {
4526 if (did_init)
4527 b43_wireless_core_exit(dev);
4528 goto out_mutex_unlock;
4529 }
4530 }
4531
4532 /* XXX: only do if device doesn't support rfkill irq */
4533 wiphy_rfkill_start_polling(hw->wiphy);
4534
4535 out_mutex_unlock:
4536 mutex_unlock(&wl->mutex);
4537
4538 return err;
4539 }
4540
4541 static void b43_op_stop(struct ieee80211_hw *hw)
4542 {
4543 struct b43_wl *wl = hw_to_b43_wl(hw);
4544 struct b43_wldev *dev = wl->current_dev;
4545
4546 cancel_work_sync(&(wl->beacon_update_trigger));
4547
4548 mutex_lock(&wl->mutex);
4549 if (b43_status(dev) >= B43_STAT_STARTED) {
4550 dev = b43_wireless_core_stop(dev);
4551 if (!dev)
4552 goto out_unlock;
4553 }
4554 b43_wireless_core_exit(dev);
4555 wl->radio_enabled = 0;
4556
4557 out_unlock:
4558 mutex_unlock(&wl->mutex);
4559
4560 cancel_work_sync(&(wl->txpower_adjust_work));
4561 }
4562
4563 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4564 struct ieee80211_sta *sta, bool set)
4565 {
4566 struct b43_wl *wl = hw_to_b43_wl(hw);
4567
4568 /* FIXME: add locking */
4569 b43_update_templates(wl);
4570
4571 return 0;
4572 }
4573
4574 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4575 struct ieee80211_vif *vif,
4576 enum sta_notify_cmd notify_cmd,
4577 struct ieee80211_sta *sta)
4578 {
4579 struct b43_wl *wl = hw_to_b43_wl(hw);
4580
4581 B43_WARN_ON(!vif || wl->vif != vif);
4582 }
4583
4584 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4585 {
4586 struct b43_wl *wl = hw_to_b43_wl(hw);
4587 struct b43_wldev *dev;
4588
4589 mutex_lock(&wl->mutex);
4590 dev = wl->current_dev;
4591 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4592 /* Disable CFP update during scan on other channels. */
4593 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4594 }
4595 mutex_unlock(&wl->mutex);
4596 }
4597
4598 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4599 {
4600 struct b43_wl *wl = hw_to_b43_wl(hw);
4601 struct b43_wldev *dev;
4602
4603 mutex_lock(&wl->mutex);
4604 dev = wl->current_dev;
4605 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4606 /* Re-enable CFP update. */
4607 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4608 }
4609 mutex_unlock(&wl->mutex);
4610 }
4611
4612 static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
4613 struct survey_info *survey)
4614 {
4615 struct b43_wl *wl = hw_to_b43_wl(hw);
4616 struct b43_wldev *dev = wl->current_dev;
4617 struct ieee80211_conf *conf = &hw->conf;
4618
4619 if (idx != 0)
4620 return -ENOENT;
4621
4622 survey->channel = conf->channel;
4623 survey->filled = SURVEY_INFO_NOISE_DBM;
4624 survey->noise = dev->stats.link_noise;
4625
4626 return 0;
4627 }
4628
4629 static const struct ieee80211_ops b43_hw_ops = {
4630 .tx = b43_op_tx,
4631 .conf_tx = b43_op_conf_tx,
4632 .add_interface = b43_op_add_interface,
4633 .remove_interface = b43_op_remove_interface,
4634 .config = b43_op_config,
4635 .bss_info_changed = b43_op_bss_info_changed,
4636 .configure_filter = b43_op_configure_filter,
4637 .set_key = b43_op_set_key,
4638 .update_tkip_key = b43_op_update_tkip_key,
4639 .get_stats = b43_op_get_stats,
4640 .get_tsf = b43_op_get_tsf,
4641 .set_tsf = b43_op_set_tsf,
4642 .start = b43_op_start,
4643 .stop = b43_op_stop,
4644 .set_tim = b43_op_beacon_set_tim,
4645 .sta_notify = b43_op_sta_notify,
4646 .sw_scan_start = b43_op_sw_scan_start_notifier,
4647 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
4648 .get_survey = b43_op_get_survey,
4649 .rfkill_poll = b43_rfkill_poll,
4650 };
4651
4652 /* Hard-reset the chip. Do not call this directly.
4653 * Use b43_controller_restart()
4654 */
4655 static void b43_chip_reset(struct work_struct *work)
4656 {
4657 struct b43_wldev *dev =
4658 container_of(work, struct b43_wldev, restart_work);
4659 struct b43_wl *wl = dev->wl;
4660 int err = 0;
4661 int prev_status;
4662
4663 mutex_lock(&wl->mutex);
4664
4665 prev_status = b43_status(dev);
4666 /* Bring the device down... */
4667 if (prev_status >= B43_STAT_STARTED) {
4668 dev = b43_wireless_core_stop(dev);
4669 if (!dev) {
4670 err = -ENODEV;
4671 goto out;
4672 }
4673 }
4674 if (prev_status >= B43_STAT_INITIALIZED)
4675 b43_wireless_core_exit(dev);
4676
4677 /* ...and up again. */
4678 if (prev_status >= B43_STAT_INITIALIZED) {
4679 err = b43_wireless_core_init(dev);
4680 if (err)
4681 goto out;
4682 }
4683 if (prev_status >= B43_STAT_STARTED) {
4684 err = b43_wireless_core_start(dev);
4685 if (err) {
4686 b43_wireless_core_exit(dev);
4687 goto out;
4688 }
4689 }
4690 out:
4691 if (err)
4692 wl->current_dev = NULL; /* Failed to init the dev. */
4693 mutex_unlock(&wl->mutex);
4694 if (err)
4695 b43err(wl, "Controller restart FAILED\n");
4696 else
4697 b43info(wl, "Controller restarted\n");
4698 }
4699
4700 static int b43_setup_bands(struct b43_wldev *dev,
4701 bool have_2ghz_phy, bool have_5ghz_phy)
4702 {
4703 struct ieee80211_hw *hw = dev->wl->hw;
4704
4705 if (have_2ghz_phy)
4706 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4707 if (dev->phy.type == B43_PHYTYPE_N) {
4708 if (have_5ghz_phy)
4709 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4710 } else {
4711 if (have_5ghz_phy)
4712 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4713 }
4714
4715 dev->phy.supports_2ghz = have_2ghz_phy;
4716 dev->phy.supports_5ghz = have_5ghz_phy;
4717
4718 return 0;
4719 }
4720
4721 static void b43_wireless_core_detach(struct b43_wldev *dev)
4722 {
4723 /* We release firmware that late to not be required to re-request
4724 * is all the time when we reinit the core. */
4725 b43_release_firmware(dev);
4726 b43_phy_free(dev);
4727 }
4728
4729 static int b43_wireless_core_attach(struct b43_wldev *dev)
4730 {
4731 struct b43_wl *wl = dev->wl;
4732 struct ssb_bus *bus = dev->sdev->bus;
4733 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
4734 int err;
4735 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4736 u32 tmp;
4737
4738 /* Do NOT do any device initialization here.
4739 * Do it in wireless_core_init() instead.
4740 * This function is for gathering basic information about the HW, only.
4741 * Also some structs may be set up here. But most likely you want to have
4742 * that in core_init(), too.
4743 */
4744
4745 err = ssb_bus_powerup(bus, 0);
4746 if (err) {
4747 b43err(wl, "Bus powerup failed\n");
4748 goto out;
4749 }
4750 /* Get the PHY type. */
4751 if (dev->sdev->id.revision >= 5) {
4752 u32 tmshigh;
4753
4754 tmshigh = ssb_read32(dev->sdev, SSB_TMSHIGH);
4755 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4756 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4757 } else
4758 B43_WARN_ON(1);
4759
4760 dev->phy.gmode = have_2ghz_phy;
4761 dev->phy.radio_on = 1;
4762 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4763 b43_wireless_core_reset(dev, tmp);
4764
4765 err = b43_phy_versioning(dev);
4766 if (err)
4767 goto err_powerdown;
4768 /* Check if this device supports multiband. */
4769 if (!pdev ||
4770 (pdev->device != 0x4312 &&
4771 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4772 /* No multiband support. */
4773 have_2ghz_phy = 0;
4774 have_5ghz_phy = 0;
4775 switch (dev->phy.type) {
4776 case B43_PHYTYPE_A:
4777 have_5ghz_phy = 1;
4778 break;
4779 case B43_PHYTYPE_LP: //FIXME not always!
4780 #if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
4781 have_5ghz_phy = 1;
4782 #endif
4783 case B43_PHYTYPE_G:
4784 case B43_PHYTYPE_N:
4785 have_2ghz_phy = 1;
4786 break;
4787 default:
4788 B43_WARN_ON(1);
4789 }
4790 }
4791 if (dev->phy.type == B43_PHYTYPE_A) {
4792 /* FIXME */
4793 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4794 err = -EOPNOTSUPP;
4795 goto err_powerdown;
4796 }
4797 if (1 /* disable A-PHY */) {
4798 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4799 if (dev->phy.type != B43_PHYTYPE_N &&
4800 dev->phy.type != B43_PHYTYPE_LP) {
4801 have_2ghz_phy = 1;
4802 have_5ghz_phy = 0;
4803 }
4804 }
4805
4806 err = b43_phy_allocate(dev);
4807 if (err)
4808 goto err_powerdown;
4809
4810 dev->phy.gmode = have_2ghz_phy;
4811 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4812 b43_wireless_core_reset(dev, tmp);
4813
4814 err = b43_validate_chipaccess(dev);
4815 if (err)
4816 goto err_phy_free;
4817 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4818 if (err)
4819 goto err_phy_free;
4820
4821 /* Now set some default "current_dev" */
4822 if (!wl->current_dev)
4823 wl->current_dev = dev;
4824 INIT_WORK(&dev->restart_work, b43_chip_reset);
4825
4826 dev->phy.ops->switch_analog(dev, 0);
4827 ssb_device_disable(dev->sdev, 0);
4828 ssb_bus_may_powerdown(bus);
4829
4830 out:
4831 return err;
4832
4833 err_phy_free:
4834 b43_phy_free(dev);
4835 err_powerdown:
4836 ssb_bus_may_powerdown(bus);
4837 return err;
4838 }
4839
4840 static void b43_one_core_detach(struct ssb_device *dev)
4841 {
4842 struct b43_wldev *wldev;
4843 struct b43_wl *wl;
4844
4845 /* Do not cancel ieee80211-workqueue based work here.
4846 * See comment in b43_remove(). */
4847
4848 wldev = ssb_get_drvdata(dev);
4849 wl = wldev->wl;
4850 b43_debugfs_remove_device(wldev);
4851 b43_wireless_core_detach(wldev);
4852 list_del(&wldev->list);
4853 wl->nr_devs--;
4854 ssb_set_drvdata(dev, NULL);
4855 kfree(wldev);
4856 }
4857
4858 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4859 {
4860 struct b43_wldev *wldev;
4861 int err = -ENOMEM;
4862
4863 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4864 if (!wldev)
4865 goto out;
4866
4867 wldev->use_pio = b43_modparam_pio;
4868 wldev->sdev = dev;
4869 wldev->wl = wl;
4870 b43_set_status(wldev, B43_STAT_UNINIT);
4871 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4872 INIT_LIST_HEAD(&wldev->list);
4873
4874 err = b43_wireless_core_attach(wldev);
4875 if (err)
4876 goto err_kfree_wldev;
4877
4878 list_add(&wldev->list, &wl->devlist);
4879 wl->nr_devs++;
4880 ssb_set_drvdata(dev, wldev);
4881 b43_debugfs_add_device(wldev);
4882
4883 out:
4884 return err;
4885
4886 err_kfree_wldev:
4887 kfree(wldev);
4888 return err;
4889 }
4890
4891 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4892 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4893 (pdev->device == _device) && \
4894 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4895 (pdev->subsystem_device == _subdevice) )
4896
4897 static void b43_sprom_fixup(struct ssb_bus *bus)
4898 {
4899 struct pci_dev *pdev;
4900
4901 /* boardflags workarounds */
4902 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4903 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4904 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4905 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4906 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4907 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4908 if (bus->bustype == SSB_BUSTYPE_PCI) {
4909 pdev = bus->host_pci;
4910 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4911 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4912 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
4913 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4914 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4915 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4916 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4917 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4918 }
4919 }
4920
4921 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4922 {
4923 struct ieee80211_hw *hw = wl->hw;
4924
4925 ssb_set_devtypedata(dev, NULL);
4926 ieee80211_free_hw(hw);
4927 }
4928
4929 static struct b43_wl *b43_wireless_init(struct ssb_device *dev)
4930 {
4931 struct ssb_sprom *sprom = &dev->bus->sprom;
4932 struct ieee80211_hw *hw;
4933 struct b43_wl *wl;
4934
4935 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4936 if (!hw) {
4937 b43err(NULL, "Could not allocate ieee80211 device\n");
4938 return ERR_PTR(-ENOMEM);
4939 }
4940 wl = hw_to_b43_wl(hw);
4941
4942 /* fill hw info */
4943 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4944 IEEE80211_HW_SIGNAL_DBM;
4945
4946 hw->wiphy->interface_modes =
4947 BIT(NL80211_IFTYPE_AP) |
4948 BIT(NL80211_IFTYPE_MESH_POINT) |
4949 BIT(NL80211_IFTYPE_STATION) |
4950 BIT(NL80211_IFTYPE_WDS) |
4951 BIT(NL80211_IFTYPE_ADHOC);
4952
4953 hw->queues = modparam_qos ? 4 : 1;
4954 wl->mac80211_initially_registered_queues = hw->queues;
4955 hw->max_rates = 2;
4956 SET_IEEE80211_DEV(hw, dev->dev);
4957 if (is_valid_ether_addr(sprom->et1mac))
4958 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4959 else
4960 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4961
4962 /* Initialize struct b43_wl */
4963 wl->hw = hw;
4964 mutex_init(&wl->mutex);
4965 spin_lock_init(&wl->hardirq_lock);
4966 INIT_LIST_HEAD(&wl->devlist);
4967 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4968 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4969 INIT_WORK(&wl->tx_work, b43_tx_work);
4970 skb_queue_head_init(&wl->tx_queue);
4971
4972 b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
4973 dev->bus->chip_id, dev->id.revision);
4974 return wl;
4975 }
4976
4977 static int b43_ssb_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4978 {
4979 struct b43_wl *wl;
4980 int err;
4981 int first = 0;
4982
4983 wl = ssb_get_devtypedata(dev);
4984 if (!wl) {
4985 /* Probing the first core. Must setup common struct b43_wl */
4986 first = 1;
4987 b43_sprom_fixup(dev->bus);
4988 wl = b43_wireless_init(dev);
4989 if (IS_ERR(wl)) {
4990 err = PTR_ERR(wl);
4991 goto out;
4992 }
4993 ssb_set_devtypedata(dev, wl);
4994 B43_WARN_ON(ssb_get_devtypedata(dev) != wl);
4995 }
4996 err = b43_one_core_attach(dev, wl);
4997 if (err)
4998 goto err_wireless_exit;
4999
5000 if (first) {
5001 err = ieee80211_register_hw(wl->hw);
5002 if (err)
5003 goto err_one_core_detach;
5004 b43_leds_register(wl->current_dev);
5005 }
5006
5007 out:
5008 return err;
5009
5010 err_one_core_detach:
5011 b43_one_core_detach(dev);
5012 err_wireless_exit:
5013 if (first)
5014 b43_wireless_exit(dev, wl);
5015 return err;
5016 }
5017
5018 static void b43_ssb_remove(struct ssb_device *dev)
5019 {
5020 struct b43_wl *wl = ssb_get_devtypedata(dev);
5021 struct b43_wldev *wldev = ssb_get_drvdata(dev);
5022
5023 /* We must cancel any work here before unregistering from ieee80211,
5024 * as the ieee80211 unreg will destroy the workqueue. */
5025 cancel_work_sync(&wldev->restart_work);
5026
5027 B43_WARN_ON(!wl);
5028 if (wl->current_dev == wldev) {
5029 /* Restore the queues count before unregistering, because firmware detect
5030 * might have modified it. Restoring is important, so the networking
5031 * stack can properly free resources. */
5032 wl->hw->queues = wl->mac80211_initially_registered_queues;
5033 b43_leds_stop(wldev);
5034 ieee80211_unregister_hw(wl->hw);
5035 }
5036
5037 b43_one_core_detach(dev);
5038
5039 if (list_empty(&wl->devlist)) {
5040 b43_leds_unregister(wl);
5041 /* Last core on the chip unregistered.
5042 * We can destroy common struct b43_wl.
5043 */
5044 b43_wireless_exit(dev, wl);
5045 }
5046 }
5047
5048 /* Perform a hardware reset. This can be called from any context. */
5049 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5050 {
5051 /* Must avoid requeueing, if we are in shutdown. */
5052 if (b43_status(dev) < B43_STAT_INITIALIZED)
5053 return;
5054 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5055 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5056 }
5057
5058 static struct ssb_driver b43_ssb_driver = {
5059 .name = KBUILD_MODNAME,
5060 .id_table = b43_ssb_tbl,
5061 .probe = b43_ssb_probe,
5062 .remove = b43_ssb_remove,
5063 };
5064
5065 static void b43_print_driverinfo(void)
5066 {
5067 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5068 *feat_leds = "", *feat_sdio = "";
5069
5070 #ifdef CONFIG_B43_PCI_AUTOSELECT
5071 feat_pci = "P";
5072 #endif
5073 #ifdef CONFIG_B43_PCMCIA
5074 feat_pcmcia = "M";
5075 #endif
5076 #ifdef CONFIG_B43_PHY_N
5077 feat_nphy = "N";
5078 #endif
5079 #ifdef CONFIG_B43_LEDS
5080 feat_leds = "L";
5081 #endif
5082 #ifdef CONFIG_B43_SDIO
5083 feat_sdio = "S";
5084 #endif
5085 printk(KERN_INFO "Broadcom 43xx driver loaded "
5086 "[ Features: %s%s%s%s%s, Firmware-ID: "
5087 B43_SUPPORTED_FIRMWARE_ID " ]\n",
5088 feat_pci, feat_pcmcia, feat_nphy,
5089 feat_leds, feat_sdio);
5090 }
5091
5092 static int __init b43_init(void)
5093 {
5094 int err;
5095
5096 b43_debugfs_init();
5097 err = b43_pcmcia_init();
5098 if (err)
5099 goto err_dfs_exit;
5100 err = b43_sdio_init();
5101 if (err)
5102 goto err_pcmcia_exit;
5103 err = ssb_driver_register(&b43_ssb_driver);
5104 if (err)
5105 goto err_sdio_exit;
5106 b43_print_driverinfo();
5107
5108 return err;
5109
5110 err_sdio_exit:
5111 b43_sdio_exit();
5112 err_pcmcia_exit:
5113 b43_pcmcia_exit();
5114 err_dfs_exit:
5115 b43_debugfs_exit();
5116 return err;
5117 }
5118
5119 static void __exit b43_exit(void)
5120 {
5121 ssb_driver_unregister(&b43_ssb_driver);
5122 b43_sdio_exit();
5123 b43_pcmcia_exit();
5124 b43_debugfs_exit();
5125 }
5126
5127 module_init(b43_init)
5128 module_exit(b43_exit)
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