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b43: Add HostFlags HI support
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / b43 / main.c
blobf745308faaad166b2313f71265fa156145a17f79
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, 2006 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 Some parts of the code in this file are derived from the ipw2200
12 driver Copyright(c) 2003 - 2004 Intel Corporation.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; see the file COPYING. If not, write to
26 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
27 Boston, MA 02110-1301, USA.
28
29 */
30
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/moduleparam.h>
34 #include <linux/if_arp.h>
35 #include <linux/etherdevice.h>
36 #include <linux/version.h>
37 #include <linux/firmware.h>
38 #include <linux/wireless.h>
39 #include <linux/workqueue.h>
40 #include <linux/skbuff.h>
41 #include <linux/io.h>
42 #include <linux/dma-mapping.h>
43 #include <asm/unaligned.h>
44
45 #include "b43.h"
46 #include "main.h"
47 #include "debugfs.h"
48 #include "phy.h"
49 #include "dma.h"
50 #include "sysfs.h"
51 #include "xmit.h"
52 #include "lo.h"
53 #include "pcmcia.h"
54
55 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
56 MODULE_AUTHOR("Martin Langer");
57 MODULE_AUTHOR("Stefano Brivio");
58 MODULE_AUTHOR("Michael Buesch");
59 MODULE_LICENSE("GPL");
60
61 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
62
63
64 static int modparam_bad_frames_preempt;
65 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
66 MODULE_PARM_DESC(bad_frames_preempt,
67 "enable(1) / disable(0) Bad Frames Preemption");
68
69 static char modparam_fwpostfix[16];
70 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
71 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
72
73 static int modparam_hwpctl;
74 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
75 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
76
77 static int modparam_nohwcrypt;
78 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
79 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
80
81 static const struct ssb_device_id b43_ssb_tbl[] = {
82 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
83 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
84 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
85 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
86 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
87 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
88 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
89 SSB_DEVTABLE_END
90 };
91
92 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
93
94 /* Channel and ratetables are shared for all devices.
95 * They can't be const, because ieee80211 puts some precalculated
96 * data in there. This data is the same for all devices, so we don't
97 * get concurrency issues */
98 #define RATETAB_ENT(_rateid, _flags) \
99 { \
100 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
101 .hw_value = (_rateid), \
102 .flags = (_flags), \
103 }
104
105 /*
106 * NOTE: When changing this, sync with xmit.c's
107 * b43_plcp_get_bitrate_idx_* functions!
108 */
109 static struct ieee80211_rate __b43_ratetable[] = {
110 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
111 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
112 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
113 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
114 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
115 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
116 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
117 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
118 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
119 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
120 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
121 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
122 };
123
124 #define b43_a_ratetable (__b43_ratetable + 4)
125 #define b43_a_ratetable_size 8
126 #define b43_b_ratetable (__b43_ratetable + 0)
127 #define b43_b_ratetable_size 4
128 #define b43_g_ratetable (__b43_ratetable + 0)
129 #define b43_g_ratetable_size 12
130
131 #define CHAN4G(_channel, _freq, _flags) { \
132 .band = IEEE80211_BAND_2GHZ, \
133 .center_freq = (_freq), \
134 .hw_value = (_channel), \
135 .flags = (_flags), \
136 .max_antenna_gain = 0, \
137 .max_power = 30, \
138 }
139 static struct ieee80211_channel b43_2ghz_chantable[] = {
140 CHAN4G(1, 2412, 0),
141 CHAN4G(2, 2417, 0),
142 CHAN4G(3, 2422, 0),
143 CHAN4G(4, 2427, 0),
144 CHAN4G(5, 2432, 0),
145 CHAN4G(6, 2437, 0),
146 CHAN4G(7, 2442, 0),
147 CHAN4G(8, 2447, 0),
148 CHAN4G(9, 2452, 0),
149 CHAN4G(10, 2457, 0),
150 CHAN4G(11, 2462, 0),
151 CHAN4G(12, 2467, 0),
152 CHAN4G(13, 2472, 0),
153 CHAN4G(14, 2484, 0),
154 };
155 #undef CHAN4G
156
157 #define CHAN5G(_channel, _flags) { \
158 .band = IEEE80211_BAND_5GHZ, \
159 .center_freq = 5000 + (5 * (_channel)), \
160 .hw_value = (_channel), \
161 .flags = (_flags), \
162 .max_antenna_gain = 0, \
163 .max_power = 30, \
164 }
165 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
166 CHAN5G(32, 0), CHAN5G(34, 0),
167 CHAN5G(36, 0), CHAN5G(38, 0),
168 CHAN5G(40, 0), CHAN5G(42, 0),
169 CHAN5G(44, 0), CHAN5G(46, 0),
170 CHAN5G(48, 0), CHAN5G(50, 0),
171 CHAN5G(52, 0), CHAN5G(54, 0),
172 CHAN5G(56, 0), CHAN5G(58, 0),
173 CHAN5G(60, 0), CHAN5G(62, 0),
174 CHAN5G(64, 0), CHAN5G(66, 0),
175 CHAN5G(68, 0), CHAN5G(70, 0),
176 CHAN5G(72, 0), CHAN5G(74, 0),
177 CHAN5G(76, 0), CHAN5G(78, 0),
178 CHAN5G(80, 0), CHAN5G(82, 0),
179 CHAN5G(84, 0), CHAN5G(86, 0),
180 CHAN5G(88, 0), CHAN5G(90, 0),
181 CHAN5G(92, 0), CHAN5G(94, 0),
182 CHAN5G(96, 0), CHAN5G(98, 0),
183 CHAN5G(100, 0), CHAN5G(102, 0),
184 CHAN5G(104, 0), CHAN5G(106, 0),
185 CHAN5G(108, 0), CHAN5G(110, 0),
186 CHAN5G(112, 0), CHAN5G(114, 0),
187 CHAN5G(116, 0), CHAN5G(118, 0),
188 CHAN5G(120, 0), CHAN5G(122, 0),
189 CHAN5G(124, 0), CHAN5G(126, 0),
190 CHAN5G(128, 0), CHAN5G(130, 0),
191 CHAN5G(132, 0), CHAN5G(134, 0),
192 CHAN5G(136, 0), CHAN5G(138, 0),
193 CHAN5G(140, 0), CHAN5G(142, 0),
194 CHAN5G(144, 0), CHAN5G(145, 0),
195 CHAN5G(146, 0), CHAN5G(147, 0),
196 CHAN5G(148, 0), CHAN5G(149, 0),
197 CHAN5G(150, 0), CHAN5G(151, 0),
198 CHAN5G(152, 0), CHAN5G(153, 0),
199 CHAN5G(154, 0), CHAN5G(155, 0),
200 CHAN5G(156, 0), CHAN5G(157, 0),
201 CHAN5G(158, 0), CHAN5G(159, 0),
202 CHAN5G(160, 0), CHAN5G(161, 0),
203 CHAN5G(162, 0), CHAN5G(163, 0),
204 CHAN5G(164, 0), CHAN5G(165, 0),
205 CHAN5G(166, 0), CHAN5G(168, 0),
206 CHAN5G(170, 0), CHAN5G(172, 0),
207 CHAN5G(174, 0), CHAN5G(176, 0),
208 CHAN5G(178, 0), CHAN5G(180, 0),
209 CHAN5G(182, 0), CHAN5G(184, 0),
210 CHAN5G(186, 0), CHAN5G(188, 0),
211 CHAN5G(190, 0), CHAN5G(192, 0),
212 CHAN5G(194, 0), CHAN5G(196, 0),
213 CHAN5G(198, 0), CHAN5G(200, 0),
214 CHAN5G(202, 0), CHAN5G(204, 0),
215 CHAN5G(206, 0), CHAN5G(208, 0),
216 CHAN5G(210, 0), CHAN5G(212, 0),
217 CHAN5G(214, 0), CHAN5G(216, 0),
218 CHAN5G(218, 0), CHAN5G(220, 0),
219 CHAN5G(222, 0), CHAN5G(224, 0),
220 CHAN5G(226, 0), CHAN5G(228, 0),
221 };
222
223 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
224 CHAN5G(34, 0), CHAN5G(36, 0),
225 CHAN5G(38, 0), CHAN5G(40, 0),
226 CHAN5G(42, 0), CHAN5G(44, 0),
227 CHAN5G(46, 0), CHAN5G(48, 0),
228 CHAN5G(52, 0), CHAN5G(56, 0),
229 CHAN5G(60, 0), CHAN5G(64, 0),
230 CHAN5G(100, 0), CHAN5G(104, 0),
231 CHAN5G(108, 0), CHAN5G(112, 0),
232 CHAN5G(116, 0), CHAN5G(120, 0),
233 CHAN5G(124, 0), CHAN5G(128, 0),
234 CHAN5G(132, 0), CHAN5G(136, 0),
235 CHAN5G(140, 0), CHAN5G(149, 0),
236 CHAN5G(153, 0), CHAN5G(157, 0),
237 CHAN5G(161, 0), CHAN5G(165, 0),
238 CHAN5G(184, 0), CHAN5G(188, 0),
239 CHAN5G(192, 0), CHAN5G(196, 0),
240 CHAN5G(200, 0), CHAN5G(204, 0),
241 CHAN5G(208, 0), CHAN5G(212, 0),
242 CHAN5G(216, 0),
243 };
244 #undef CHAN5G
245
246 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
247 .band = IEEE80211_BAND_5GHZ,
248 .channels = b43_5ghz_nphy_chantable,
249 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
250 .bitrates = b43_a_ratetable,
251 .n_bitrates = b43_a_ratetable_size,
252 };
253
254 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
255 .band = IEEE80211_BAND_5GHZ,
256 .channels = b43_5ghz_aphy_chantable,
257 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
258 .bitrates = b43_a_ratetable,
259 .n_bitrates = b43_a_ratetable_size,
260 };
261
262 static struct ieee80211_supported_band b43_band_2GHz = {
263 .band = IEEE80211_BAND_2GHZ,
264 .channels = b43_2ghz_chantable,
265 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
266 .bitrates = b43_g_ratetable,
267 .n_bitrates = b43_g_ratetable_size,
268 };
269
270 static void b43_wireless_core_exit(struct b43_wldev *dev);
271 static int b43_wireless_core_init(struct b43_wldev *dev);
272 static void b43_wireless_core_stop(struct b43_wldev *dev);
273 static int b43_wireless_core_start(struct b43_wldev *dev);
274
275 static int b43_ratelimit(struct b43_wl *wl)
276 {
277 if (!wl || !wl->current_dev)
278 return 1;
279 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
280 return 1;
281 /* We are up and running.
282 * Ratelimit the messages to avoid DoS over the net. */
283 return net_ratelimit();
284 }
285
286 void b43info(struct b43_wl *wl, const char *fmt, ...)
287 {
288 va_list args;
289
290 if (!b43_ratelimit(wl))
291 return;
292 va_start(args, fmt);
293 printk(KERN_INFO "b43-%s: ",
294 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
295 vprintk(fmt, args);
296 va_end(args);
297 }
298
299 void b43err(struct b43_wl *wl, const char *fmt, ...)
300 {
301 va_list args;
302
303 if (!b43_ratelimit(wl))
304 return;
305 va_start(args, fmt);
306 printk(KERN_ERR "b43-%s ERROR: ",
307 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
308 vprintk(fmt, args);
309 va_end(args);
310 }
311
312 void b43warn(struct b43_wl *wl, const char *fmt, ...)
313 {
314 va_list args;
315
316 if (!b43_ratelimit(wl))
317 return;
318 va_start(args, fmt);
319 printk(KERN_WARNING "b43-%s warning: ",
320 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
321 vprintk(fmt, args);
322 va_end(args);
323 }
324
325 #if B43_DEBUG
326 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
327 {
328 va_list args;
329
330 va_start(args, fmt);
331 printk(KERN_DEBUG "b43-%s debug: ",
332 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
333 vprintk(fmt, args);
334 va_end(args);
335 }
336 #endif /* DEBUG */
337
338 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
339 {
340 u32 macctl;
341
342 B43_WARN_ON(offset % 4 != 0);
343
344 macctl = b43_read32(dev, B43_MMIO_MACCTL);
345 if (macctl & B43_MACCTL_BE)
346 val = swab32(val);
347
348 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
349 mmiowb();
350 b43_write32(dev, B43_MMIO_RAM_DATA, val);
351 }
352
353 static inline void b43_shm_control_word(struct b43_wldev *dev,
354 u16 routing, u16 offset)
355 {
356 u32 control;
357
358 /* "offset" is the WORD offset. */
359 control = routing;
360 control <<= 16;
361 control |= offset;
362 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
363 }
364
365 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
366 {
367 struct b43_wl *wl = dev->wl;
368 unsigned long flags;
369 u32 ret;
370
371 spin_lock_irqsave(&wl->shm_lock, flags);
372 if (routing == B43_SHM_SHARED) {
373 B43_WARN_ON(offset & 0x0001);
374 if (offset & 0x0003) {
375 /* Unaligned access */
376 b43_shm_control_word(dev, routing, offset >> 2);
377 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
378 ret <<= 16;
379 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
380 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
381
382 goto out;
383 }
384 offset >>= 2;
385 }
386 b43_shm_control_word(dev, routing, offset);
387 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
388 out:
389 spin_unlock_irqrestore(&wl->shm_lock, flags);
390
391 return ret;
392 }
393
394 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
395 {
396 struct b43_wl *wl = dev->wl;
397 unsigned long flags;
398 u16 ret;
399
400 spin_lock_irqsave(&wl->shm_lock, flags);
401 if (routing == B43_SHM_SHARED) {
402 B43_WARN_ON(offset & 0x0001);
403 if (offset & 0x0003) {
404 /* Unaligned access */
405 b43_shm_control_word(dev, routing, offset >> 2);
406 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
407
408 goto out;
409 }
410 offset >>= 2;
411 }
412 b43_shm_control_word(dev, routing, offset);
413 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
414 out:
415 spin_unlock_irqrestore(&wl->shm_lock, flags);
416
417 return ret;
418 }
419
420 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
421 {
422 struct b43_wl *wl = dev->wl;
423 unsigned long flags;
424
425 spin_lock_irqsave(&wl->shm_lock, flags);
426 if (routing == B43_SHM_SHARED) {
427 B43_WARN_ON(offset & 0x0001);
428 if (offset & 0x0003) {
429 /* Unaligned access */
430 b43_shm_control_word(dev, routing, offset >> 2);
431 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
432 (value >> 16) & 0xffff);
433 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
434 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
435 goto out;
436 }
437 offset >>= 2;
438 }
439 b43_shm_control_word(dev, routing, offset);
440 b43_write32(dev, B43_MMIO_SHM_DATA, value);
441 out:
442 spin_unlock_irqrestore(&wl->shm_lock, flags);
443 }
444
445 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
446 {
447 struct b43_wl *wl = dev->wl;
448 unsigned long flags;
449
450 spin_lock_irqsave(&wl->shm_lock, flags);
451 if (routing == B43_SHM_SHARED) {
452 B43_WARN_ON(offset & 0x0001);
453 if (offset & 0x0003) {
454 /* Unaligned access */
455 b43_shm_control_word(dev, routing, offset >> 2);
456 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
457 goto out;
458 }
459 offset >>= 2;
460 }
461 b43_shm_control_word(dev, routing, offset);
462 b43_write16(dev, B43_MMIO_SHM_DATA, value);
463 out:
464 spin_unlock_irqrestore(&wl->shm_lock, flags);
465 }
466
467 /* Read HostFlags */
468 u64 b43_hf_read(struct b43_wldev * dev)
469 {
470 u64 ret;
471
472 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
473 ret <<= 16;
474 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
475 ret <<= 16;
476 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
477
478 return ret;
479 }
480
481 /* Write HostFlags */
482 void b43_hf_write(struct b43_wldev *dev, u64 value)
483 {
484 u16 lo, mi, hi;
485
486 lo = (value & 0x00000000FFFFULL);
487 mi = (value & 0x0000FFFF0000ULL) >> 16;
488 hi = (value & 0xFFFF00000000ULL) >> 32;
489 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
490 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
491 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
492 }
493
494 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
495 {
496 /* We need to be careful. As we read the TSF from multiple
497 * registers, we should take care of register overflows.
498 * In theory, the whole tsf read process should be atomic.
499 * We try to be atomic here, by restaring the read process,
500 * if any of the high registers changed (overflew).
501 */
502 if (dev->dev->id.revision >= 3) {
503 u32 low, high, high2;
504
505 do {
506 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
507 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
508 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
509 } while (unlikely(high != high2));
510
511 *tsf = high;
512 *tsf <<= 32;
513 *tsf |= low;
514 } else {
515 u64 tmp;
516 u16 v0, v1, v2, v3;
517 u16 test1, test2, test3;
518
519 do {
520 v3 = b43_read16(dev, B43_MMIO_TSF_3);
521 v2 = b43_read16(dev, B43_MMIO_TSF_2);
522 v1 = b43_read16(dev, B43_MMIO_TSF_1);
523 v0 = b43_read16(dev, B43_MMIO_TSF_0);
524
525 test3 = b43_read16(dev, B43_MMIO_TSF_3);
526 test2 = b43_read16(dev, B43_MMIO_TSF_2);
527 test1 = b43_read16(dev, B43_MMIO_TSF_1);
528 } while (v3 != test3 || v2 != test2 || v1 != test1);
529
530 *tsf = v3;
531 *tsf <<= 48;
532 tmp = v2;
533 tmp <<= 32;
534 *tsf |= tmp;
535 tmp = v1;
536 tmp <<= 16;
537 *tsf |= tmp;
538 *tsf |= v0;
539 }
540 }
541
542 static void b43_time_lock(struct b43_wldev *dev)
543 {
544 u32 macctl;
545
546 macctl = b43_read32(dev, B43_MMIO_MACCTL);
547 macctl |= B43_MACCTL_TBTTHOLD;
548 b43_write32(dev, B43_MMIO_MACCTL, macctl);
549 /* Commit the write */
550 b43_read32(dev, B43_MMIO_MACCTL);
551 }
552
553 static void b43_time_unlock(struct b43_wldev *dev)
554 {
555 u32 macctl;
556
557 macctl = b43_read32(dev, B43_MMIO_MACCTL);
558 macctl &= ~B43_MACCTL_TBTTHOLD;
559 b43_write32(dev, B43_MMIO_MACCTL, macctl);
560 /* Commit the write */
561 b43_read32(dev, B43_MMIO_MACCTL);
562 }
563
564 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
565 {
566 /* Be careful with the in-progress timer.
567 * First zero out the low register, so we have a full
568 * register-overflow duration to complete the operation.
569 */
570 if (dev->dev->id.revision >= 3) {
571 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
572 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
573
574 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
575 mmiowb();
576 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
577 mmiowb();
578 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
579 } else {
580 u16 v0 = (tsf & 0x000000000000FFFFULL);
581 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
582 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
583 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
584
585 b43_write16(dev, B43_MMIO_TSF_0, 0);
586 mmiowb();
587 b43_write16(dev, B43_MMIO_TSF_3, v3);
588 mmiowb();
589 b43_write16(dev, B43_MMIO_TSF_2, v2);
590 mmiowb();
591 b43_write16(dev, B43_MMIO_TSF_1, v1);
592 mmiowb();
593 b43_write16(dev, B43_MMIO_TSF_0, v0);
594 }
595 }
596
597 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
598 {
599 b43_time_lock(dev);
600 b43_tsf_write_locked(dev, tsf);
601 b43_time_unlock(dev);
602 }
603
604 static
605 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
606 {
607 static const u8 zero_addr[ETH_ALEN] = { 0 };
608 u16 data;
609
610 if (!mac)
611 mac = zero_addr;
612
613 offset |= 0x0020;
614 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
615
616 data = mac[0];
617 data |= mac[1] << 8;
618 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
619 data = mac[2];
620 data |= mac[3] << 8;
621 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
622 data = mac[4];
623 data |= mac[5] << 8;
624 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
625 }
626
627 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
628 {
629 const u8 *mac;
630 const u8 *bssid;
631 u8 mac_bssid[ETH_ALEN * 2];
632 int i;
633 u32 tmp;
634
635 bssid = dev->wl->bssid;
636 mac = dev->wl->mac_addr;
637
638 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
639
640 memcpy(mac_bssid, mac, ETH_ALEN);
641 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
642
643 /* Write our MAC address and BSSID to template ram */
644 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
645 tmp = (u32) (mac_bssid[i + 0]);
646 tmp |= (u32) (mac_bssid[i + 1]) << 8;
647 tmp |= (u32) (mac_bssid[i + 2]) << 16;
648 tmp |= (u32) (mac_bssid[i + 3]) << 24;
649 b43_ram_write(dev, 0x20 + i, tmp);
650 }
651 }
652
653 static void b43_upload_card_macaddress(struct b43_wldev *dev)
654 {
655 b43_write_mac_bssid_templates(dev);
656 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
657 }
658
659 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
660 {
661 /* slot_time is in usec. */
662 if (dev->phy.type != B43_PHYTYPE_G)
663 return;
664 b43_write16(dev, 0x684, 510 + slot_time);
665 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
666 }
667
668 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
669 {
670 b43_set_slot_time(dev, 9);
671 dev->short_slot = 1;
672 }
673
674 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
675 {
676 b43_set_slot_time(dev, 20);
677 dev->short_slot = 0;
678 }
679
680 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
681 * Returns the _previously_ enabled IRQ mask.
682 */
683 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
684 {
685 u32 old_mask;
686
687 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
688 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
689
690 return old_mask;
691 }
692
693 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
694 * Returns the _previously_ enabled IRQ mask.
695 */
696 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
697 {
698 u32 old_mask;
699
700 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
701 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
702
703 return old_mask;
704 }
705
706 /* Synchronize IRQ top- and bottom-half.
707 * IRQs must be masked before calling this.
708 * This must not be called with the irq_lock held.
709 */
710 static void b43_synchronize_irq(struct b43_wldev *dev)
711 {
712 synchronize_irq(dev->dev->irq);
713 tasklet_kill(&dev->isr_tasklet);
714 }
715
716 /* DummyTransmission function, as documented on
717 * http://bcm-specs.sipsolutions.net/DummyTransmission
718 */
719 void b43_dummy_transmission(struct b43_wldev *dev)
720 {
721 struct b43_phy *phy = &dev->phy;
722 unsigned int i, max_loop;
723 u16 value;
724 u32 buffer[5] = {
725 0x00000000,
726 0x00D40000,
727 0x00000000,
728 0x01000000,
729 0x00000000,
730 };
731
732 switch (phy->type) {
733 case B43_PHYTYPE_A:
734 max_loop = 0x1E;
735 buffer[0] = 0x000201CC;
736 break;
737 case B43_PHYTYPE_B:
738 case B43_PHYTYPE_G:
739 max_loop = 0xFA;
740 buffer[0] = 0x000B846E;
741 break;
742 default:
743 B43_WARN_ON(1);
744 return;
745 }
746
747 for (i = 0; i < 5; i++)
748 b43_ram_write(dev, i * 4, buffer[i]);
749
750 /* Commit writes */
751 b43_read32(dev, B43_MMIO_MACCTL);
752
753 b43_write16(dev, 0x0568, 0x0000);
754 b43_write16(dev, 0x07C0, 0x0000);
755 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
756 b43_write16(dev, 0x050C, value);
757 b43_write16(dev, 0x0508, 0x0000);
758 b43_write16(dev, 0x050A, 0x0000);
759 b43_write16(dev, 0x054C, 0x0000);
760 b43_write16(dev, 0x056A, 0x0014);
761 b43_write16(dev, 0x0568, 0x0826);
762 b43_write16(dev, 0x0500, 0x0000);
763 b43_write16(dev, 0x0502, 0x0030);
764
765 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
766 b43_radio_write16(dev, 0x0051, 0x0017);
767 for (i = 0x00; i < max_loop; i++) {
768 value = b43_read16(dev, 0x050E);
769 if (value & 0x0080)
770 break;
771 udelay(10);
772 }
773 for (i = 0x00; i < 0x0A; i++) {
774 value = b43_read16(dev, 0x050E);
775 if (value & 0x0400)
776 break;
777 udelay(10);
778 }
779 for (i = 0x00; i < 0x0A; i++) {
780 value = b43_read16(dev, 0x0690);
781 if (!(value & 0x0100))
782 break;
783 udelay(10);
784 }
785 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
786 b43_radio_write16(dev, 0x0051, 0x0037);
787 }
788
789 static void key_write(struct b43_wldev *dev,
790 u8 index, u8 algorithm, const u8 * key)
791 {
792 unsigned int i;
793 u32 offset;
794 u16 value;
795 u16 kidx;
796
797 /* Key index/algo block */
798 kidx = b43_kidx_to_fw(dev, index);
799 value = ((kidx << 4) | algorithm);
800 b43_shm_write16(dev, B43_SHM_SHARED,
801 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
802
803 /* Write the key to the Key Table Pointer offset */
804 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
805 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
806 value = key[i];
807 value |= (u16) (key[i + 1]) << 8;
808 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
809 }
810 }
811
812 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
813 {
814 u32 addrtmp[2] = { 0, 0, };
815 u8 per_sta_keys_start = 8;
816
817 if (b43_new_kidx_api(dev))
818 per_sta_keys_start = 4;
819
820 B43_WARN_ON(index < per_sta_keys_start);
821 /* We have two default TX keys and possibly two default RX keys.
822 * Physical mac 0 is mapped to physical key 4 or 8, depending
823 * on the firmware version.
824 * So we must adjust the index here.
825 */
826 index -= per_sta_keys_start;
827
828 if (addr) {
829 addrtmp[0] = addr[0];
830 addrtmp[0] |= ((u32) (addr[1]) << 8);
831 addrtmp[0] |= ((u32) (addr[2]) << 16);
832 addrtmp[0] |= ((u32) (addr[3]) << 24);
833 addrtmp[1] = addr[4];
834 addrtmp[1] |= ((u32) (addr[5]) << 8);
835 }
836
837 if (dev->dev->id.revision >= 5) {
838 /* Receive match transmitter address mechanism */
839 b43_shm_write32(dev, B43_SHM_RCMTA,
840 (index * 2) + 0, addrtmp[0]);
841 b43_shm_write16(dev, B43_SHM_RCMTA,
842 (index * 2) + 1, addrtmp[1]);
843 } else {
844 /* RXE (Receive Engine) and
845 * PSM (Programmable State Machine) mechanism
846 */
847 if (index < 8) {
848 /* TODO write to RCM 16, 19, 22 and 25 */
849 } else {
850 b43_shm_write32(dev, B43_SHM_SHARED,
851 B43_SHM_SH_PSM + (index * 6) + 0,
852 addrtmp[0]);
853 b43_shm_write16(dev, B43_SHM_SHARED,
854 B43_SHM_SH_PSM + (index * 6) + 4,
855 addrtmp[1]);
856 }
857 }
858 }
859
860 static void do_key_write(struct b43_wldev *dev,
861 u8 index, u8 algorithm,
862 const u8 * key, size_t key_len, const u8 * mac_addr)
863 {
864 u8 buf[B43_SEC_KEYSIZE] = { 0, };
865 u8 per_sta_keys_start = 8;
866
867 if (b43_new_kidx_api(dev))
868 per_sta_keys_start = 4;
869
870 B43_WARN_ON(index >= dev->max_nr_keys);
871 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
872
873 if (index >= per_sta_keys_start)
874 keymac_write(dev, index, NULL); /* First zero out mac. */
875 if (key)
876 memcpy(buf, key, key_len);
877 key_write(dev, index, algorithm, buf);
878 if (index >= per_sta_keys_start)
879 keymac_write(dev, index, mac_addr);
880
881 dev->key[index].algorithm = algorithm;
882 }
883
884 static int b43_key_write(struct b43_wldev *dev,
885 int index, u8 algorithm,
886 const u8 * key, size_t key_len,
887 const u8 * mac_addr,
888 struct ieee80211_key_conf *keyconf)
889 {
890 int i;
891 int sta_keys_start;
892
893 if (key_len > B43_SEC_KEYSIZE)
894 return -EINVAL;
895 for (i = 0; i < dev->max_nr_keys; i++) {
896 /* Check that we don't already have this key. */
897 B43_WARN_ON(dev->key[i].keyconf == keyconf);
898 }
899 if (index < 0) {
900 /* Either pairwise key or address is 00:00:00:00:00:00
901 * for transmit-only keys. Search the index. */
902 if (b43_new_kidx_api(dev))
903 sta_keys_start = 4;
904 else
905 sta_keys_start = 8;
906 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
907 if (!dev->key[i].keyconf) {
908 /* found empty */
909 index = i;
910 break;
911 }
912 }
913 if (index < 0) {
914 b43err(dev->wl, "Out of hardware key memory\n");
915 return -ENOSPC;
916 }
917 } else
918 B43_WARN_ON(index > 3);
919
920 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
921 if ((index <= 3) && !b43_new_kidx_api(dev)) {
922 /* Default RX key */
923 B43_WARN_ON(mac_addr);
924 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
925 }
926 keyconf->hw_key_idx = index;
927 dev->key[index].keyconf = keyconf;
928
929 return 0;
930 }
931
932 static int b43_key_clear(struct b43_wldev *dev, int index)
933 {
934 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
935 return -EINVAL;
936 do_key_write(dev, index, B43_SEC_ALGO_NONE,
937 NULL, B43_SEC_KEYSIZE, NULL);
938 if ((index <= 3) && !b43_new_kidx_api(dev)) {
939 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
940 NULL, B43_SEC_KEYSIZE, NULL);
941 }
942 dev->key[index].keyconf = NULL;
943
944 return 0;
945 }
946
947 static void b43_clear_keys(struct b43_wldev *dev)
948 {
949 int i;
950
951 for (i = 0; i < dev->max_nr_keys; i++)
952 b43_key_clear(dev, i);
953 }
954
955 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
956 {
957 u32 macctl;
958 u16 ucstat;
959 bool hwps;
960 bool awake;
961 int i;
962
963 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
964 (ps_flags & B43_PS_DISABLED));
965 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
966
967 if (ps_flags & B43_PS_ENABLED) {
968 hwps = 1;
969 } else if (ps_flags & B43_PS_DISABLED) {
970 hwps = 0;
971 } else {
972 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
973 // and thus is not an AP and we are associated, set bit 25
974 }
975 if (ps_flags & B43_PS_AWAKE) {
976 awake = 1;
977 } else if (ps_flags & B43_PS_ASLEEP) {
978 awake = 0;
979 } else {
980 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
981 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
982 // successful, set bit26
983 }
984
985 /* FIXME: For now we force awake-on and hwps-off */
986 hwps = 0;
987 awake = 1;
988
989 macctl = b43_read32(dev, B43_MMIO_MACCTL);
990 if (hwps)
991 macctl |= B43_MACCTL_HWPS;
992 else
993 macctl &= ~B43_MACCTL_HWPS;
994 if (awake)
995 macctl |= B43_MACCTL_AWAKE;
996 else
997 macctl &= ~B43_MACCTL_AWAKE;
998 b43_write32(dev, B43_MMIO_MACCTL, macctl);
999 /* Commit write */
1000 b43_read32(dev, B43_MMIO_MACCTL);
1001 if (awake && dev->dev->id.revision >= 5) {
1002 /* Wait for the microcode to wake up. */
1003 for (i = 0; i < 100; i++) {
1004 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1005 B43_SHM_SH_UCODESTAT);
1006 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1007 break;
1008 udelay(10);
1009 }
1010 }
1011 }
1012
1013 /* Turn the Analog ON/OFF */
1014 static void b43_switch_analog(struct b43_wldev *dev, int on)
1015 {
1016 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
1017 }
1018
1019 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1020 {
1021 u32 tmslow;
1022 u32 macctl;
1023
1024 flags |= B43_TMSLOW_PHYCLKEN;
1025 flags |= B43_TMSLOW_PHYRESET;
1026 ssb_device_enable(dev->dev, flags);
1027 msleep(2); /* Wait for the PLL to turn on. */
1028
1029 /* Now take the PHY out of Reset again */
1030 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1031 tmslow |= SSB_TMSLOW_FGC;
1032 tmslow &= ~B43_TMSLOW_PHYRESET;
1033 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1034 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1035 msleep(1);
1036 tmslow &= ~SSB_TMSLOW_FGC;
1037 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1038 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1039 msleep(1);
1040
1041 /* Turn Analog ON */
1042 b43_switch_analog(dev, 1);
1043
1044 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1045 macctl &= ~B43_MACCTL_GMODE;
1046 if (flags & B43_TMSLOW_GMODE)
1047 macctl |= B43_MACCTL_GMODE;
1048 macctl |= B43_MACCTL_IHR_ENABLED;
1049 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1050 }
1051
1052 static void handle_irq_transmit_status(struct b43_wldev *dev)
1053 {
1054 u32 v0, v1;
1055 u16 tmp;
1056 struct b43_txstatus stat;
1057
1058 while (1) {
1059 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1060 if (!(v0 & 0x00000001))
1061 break;
1062 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1063
1064 stat.cookie = (v0 >> 16);
1065 stat.seq = (v1 & 0x0000FFFF);
1066 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1067 tmp = (v0 & 0x0000FFFF);
1068 stat.frame_count = ((tmp & 0xF000) >> 12);
1069 stat.rts_count = ((tmp & 0x0F00) >> 8);
1070 stat.supp_reason = ((tmp & 0x001C) >> 2);
1071 stat.pm_indicated = !!(tmp & 0x0080);
1072 stat.intermediate = !!(tmp & 0x0040);
1073 stat.for_ampdu = !!(tmp & 0x0020);
1074 stat.acked = !!(tmp & 0x0002);
1075
1076 b43_handle_txstatus(dev, &stat);
1077 }
1078 }
1079
1080 static void drain_txstatus_queue(struct b43_wldev *dev)
1081 {
1082 u32 dummy;
1083
1084 if (dev->dev->id.revision < 5)
1085 return;
1086 /* Read all entries from the microcode TXstatus FIFO
1087 * and throw them away.
1088 */
1089 while (1) {
1090 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1091 if (!(dummy & 0x00000001))
1092 break;
1093 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1094 }
1095 }
1096
1097 static u32 b43_jssi_read(struct b43_wldev *dev)
1098 {
1099 u32 val = 0;
1100
1101 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1102 val <<= 16;
1103 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1104
1105 return val;
1106 }
1107
1108 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1109 {
1110 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1111 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1112 }
1113
1114 static void b43_generate_noise_sample(struct b43_wldev *dev)
1115 {
1116 b43_jssi_write(dev, 0x7F7F7F7F);
1117 b43_write32(dev, B43_MMIO_MACCMD,
1118 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1119 B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1120 }
1121
1122 static void b43_calculate_link_quality(struct b43_wldev *dev)
1123 {
1124 /* Top half of Link Quality calculation. */
1125
1126 if (dev->noisecalc.calculation_running)
1127 return;
1128 dev->noisecalc.channel_at_start = dev->phy.channel;
1129 dev->noisecalc.calculation_running = 1;
1130 dev->noisecalc.nr_samples = 0;
1131
1132 b43_generate_noise_sample(dev);
1133 }
1134
1135 static void handle_irq_noise(struct b43_wldev *dev)
1136 {
1137 struct b43_phy *phy = &dev->phy;
1138 u16 tmp;
1139 u8 noise[4];
1140 u8 i, j;
1141 s32 average;
1142
1143 /* Bottom half of Link Quality calculation. */
1144
1145 B43_WARN_ON(!dev->noisecalc.calculation_running);
1146 if (dev->noisecalc.channel_at_start != phy->channel)
1147 goto drop_calculation;
1148 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1149 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1150 noise[2] == 0x7F || noise[3] == 0x7F)
1151 goto generate_new;
1152
1153 /* Get the noise samples. */
1154 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1155 i = dev->noisecalc.nr_samples;
1156 noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1157 noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1158 noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1159 noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1160 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1161 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1162 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1163 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1164 dev->noisecalc.nr_samples++;
1165 if (dev->noisecalc.nr_samples == 8) {
1166 /* Calculate the Link Quality by the noise samples. */
1167 average = 0;
1168 for (i = 0; i < 8; i++) {
1169 for (j = 0; j < 4; j++)
1170 average += dev->noisecalc.samples[i][j];
1171 }
1172 average /= (8 * 4);
1173 average *= 125;
1174 average += 64;
1175 average /= 128;
1176 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1177 tmp = (tmp / 128) & 0x1F;
1178 if (tmp >= 8)
1179 average += 2;
1180 else
1181 average -= 25;
1182 if (tmp == 8)
1183 average -= 72;
1184 else
1185 average -= 48;
1186
1187 dev->stats.link_noise = average;
1188 drop_calculation:
1189 dev->noisecalc.calculation_running = 0;
1190 return;
1191 }
1192 generate_new:
1193 b43_generate_noise_sample(dev);
1194 }
1195
1196 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1197 {
1198 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1199 ///TODO: PS TBTT
1200 } else {
1201 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1202 b43_power_saving_ctl_bits(dev, 0);
1203 }
1204 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1205 dev->dfq_valid = 1;
1206 }
1207
1208 static void handle_irq_atim_end(struct b43_wldev *dev)
1209 {
1210 if (dev->dfq_valid) {
1211 b43_write32(dev, B43_MMIO_MACCMD,
1212 b43_read32(dev, B43_MMIO_MACCMD)
1213 | B43_MACCMD_DFQ_VALID);
1214 dev->dfq_valid = 0;
1215 }
1216 }
1217
1218 static void handle_irq_pmq(struct b43_wldev *dev)
1219 {
1220 u32 tmp;
1221
1222 //TODO: AP mode.
1223
1224 while (1) {
1225 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1226 if (!(tmp & 0x00000008))
1227 break;
1228 }
1229 /* 16bit write is odd, but correct. */
1230 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1231 }
1232
1233 static void b43_write_template_common(struct b43_wldev *dev,
1234 const u8 * data, u16 size,
1235 u16 ram_offset,
1236 u16 shm_size_offset, u8 rate)
1237 {
1238 u32 i, tmp;
1239 struct b43_plcp_hdr4 plcp;
1240
1241 plcp.data = 0;
1242 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1243 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1244 ram_offset += sizeof(u32);
1245 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1246 * So leave the first two bytes of the next write blank.
1247 */
1248 tmp = (u32) (data[0]) << 16;
1249 tmp |= (u32) (data[1]) << 24;
1250 b43_ram_write(dev, ram_offset, tmp);
1251 ram_offset += sizeof(u32);
1252 for (i = 2; i < size; i += sizeof(u32)) {
1253 tmp = (u32) (data[i + 0]);
1254 if (i + 1 < size)
1255 tmp |= (u32) (data[i + 1]) << 8;
1256 if (i + 2 < size)
1257 tmp |= (u32) (data[i + 2]) << 16;
1258 if (i + 3 < size)
1259 tmp |= (u32) (data[i + 3]) << 24;
1260 b43_ram_write(dev, ram_offset + i - 2, tmp);
1261 }
1262 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1263 size + sizeof(struct b43_plcp_hdr6));
1264 }
1265
1266 static void b43_write_beacon_template(struct b43_wldev *dev,
1267 u16 ram_offset,
1268 u16 shm_size_offset, u8 rate)
1269 {
1270 unsigned int i, len, variable_len;
1271 const struct ieee80211_mgmt *bcn;
1272 const u8 *ie;
1273 bool tim_found = 0;
1274
1275 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1276 len = min((size_t) dev->wl->current_beacon->len,
1277 0x200 - sizeof(struct b43_plcp_hdr6));
1278
1279 b43_write_template_common(dev, (const u8 *)bcn,
1280 len, ram_offset, shm_size_offset, rate);
1281
1282 /* Find the position of the TIM and the DTIM_period value
1283 * and write them to SHM. */
1284 ie = bcn->u.beacon.variable;
1285 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1286 for (i = 0; i < variable_len - 2; ) {
1287 uint8_t ie_id, ie_len;
1288
1289 ie_id = ie[i];
1290 ie_len = ie[i + 1];
1291 if (ie_id == 5) {
1292 u16 tim_position;
1293 u16 dtim_period;
1294 /* This is the TIM Information Element */
1295
1296 /* Check whether the ie_len is in the beacon data range. */
1297 if (variable_len < ie_len + 2 + i)
1298 break;
1299 /* A valid TIM is at least 4 bytes long. */
1300 if (ie_len < 4)
1301 break;
1302 tim_found = 1;
1303
1304 tim_position = sizeof(struct b43_plcp_hdr6);
1305 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1306 tim_position += i;
1307
1308 dtim_period = ie[i + 3];
1309
1310 b43_shm_write16(dev, B43_SHM_SHARED,
1311 B43_SHM_SH_TIMBPOS, tim_position);
1312 b43_shm_write16(dev, B43_SHM_SHARED,
1313 B43_SHM_SH_DTIMPER, dtim_period);
1314 break;
1315 }
1316 i += ie_len + 2;
1317 }
1318 if (!tim_found) {
1319 b43warn(dev->wl, "Did not find a valid TIM IE in "
1320 "the beacon template packet. AP or IBSS operation "
1321 "may be broken.\n");
1322 }
1323 }
1324
1325 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1326 u16 shm_offset, u16 size,
1327 struct ieee80211_rate *rate)
1328 {
1329 struct b43_plcp_hdr4 plcp;
1330 u32 tmp;
1331 __le16 dur;
1332
1333 plcp.data = 0;
1334 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1335 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1336 dev->wl->vif, size,
1337 rate);
1338 /* Write PLCP in two parts and timing for packet transfer */
1339 tmp = le32_to_cpu(plcp.data);
1340 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1341 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1342 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1343 }
1344
1345 /* Instead of using custom probe response template, this function
1346 * just patches custom beacon template by:
1347 * 1) Changing packet type
1348 * 2) Patching duration field
1349 * 3) Stripping TIM
1350 */
1351 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1352 u16 *dest_size,
1353 struct ieee80211_rate *rate)
1354 {
1355 const u8 *src_data;
1356 u8 *dest_data;
1357 u16 src_size, elem_size, src_pos, dest_pos;
1358 __le16 dur;
1359 struct ieee80211_hdr *hdr;
1360 size_t ie_start;
1361
1362 src_size = dev->wl->current_beacon->len;
1363 src_data = (const u8 *)dev->wl->current_beacon->data;
1364
1365 /* Get the start offset of the variable IEs in the packet. */
1366 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1367 B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1368
1369 if (B43_WARN_ON(src_size < ie_start))
1370 return NULL;
1371
1372 dest_data = kmalloc(src_size, GFP_ATOMIC);
1373 if (unlikely(!dest_data))
1374 return NULL;
1375
1376 /* Copy the static data and all Information Elements, except the TIM. */
1377 memcpy(dest_data, src_data, ie_start);
1378 src_pos = ie_start;
1379 dest_pos = ie_start;
1380 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1381 elem_size = src_data[src_pos + 1] + 2;
1382 if (src_data[src_pos] == 5) {
1383 /* This is the TIM. */
1384 continue;
1385 }
1386 memcpy(dest_data + dest_pos, src_data + src_pos,
1387 elem_size);
1388 dest_pos += elem_size;
1389 }
1390 *dest_size = dest_pos;
1391 hdr = (struct ieee80211_hdr *)dest_data;
1392
1393 /* Set the frame control. */
1394 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1395 IEEE80211_STYPE_PROBE_RESP);
1396 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1397 dev->wl->vif, *dest_size,
1398 rate);
1399 hdr->duration_id = dur;
1400
1401 return dest_data;
1402 }
1403
1404 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1405 u16 ram_offset,
1406 u16 shm_size_offset,
1407 struct ieee80211_rate *rate)
1408 {
1409 const u8 *probe_resp_data;
1410 u16 size;
1411
1412 size = dev->wl->current_beacon->len;
1413 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1414 if (unlikely(!probe_resp_data))
1415 return;
1416
1417 /* Looks like PLCP headers plus packet timings are stored for
1418 * all possible basic rates
1419 */
1420 b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1421 b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1422 b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1423 b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1424
1425 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1426 b43_write_template_common(dev, probe_resp_data,
1427 size, ram_offset, shm_size_offset,
1428 rate->hw_value);
1429 kfree(probe_resp_data);
1430 }
1431
1432 /* Asynchronously update the packet templates in template RAM.
1433 * Locking: Requires wl->irq_lock to be locked. */
1434 static void b43_update_templates(struct b43_wl *wl, struct sk_buff *beacon)
1435 {
1436 /* This is the top half of the ansynchronous beacon update.
1437 * The bottom half is the beacon IRQ.
1438 * Beacon update must be asynchronous to avoid sending an
1439 * invalid beacon. This can happen for example, if the firmware
1440 * transmits a beacon while we are updating it. */
1441
1442 if (wl->current_beacon)
1443 dev_kfree_skb_any(wl->current_beacon);
1444 wl->current_beacon = beacon;
1445 wl->beacon0_uploaded = 0;
1446 wl->beacon1_uploaded = 0;
1447 }
1448
1449 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1450 {
1451 u32 tmp;
1452 u16 i, len;
1453
1454 len = min((u16) ssid_len, (u16) 0x100);
1455 for (i = 0; i < len; i += sizeof(u32)) {
1456 tmp = (u32) (ssid[i + 0]);
1457 if (i + 1 < len)
1458 tmp |= (u32) (ssid[i + 1]) << 8;
1459 if (i + 2 < len)
1460 tmp |= (u32) (ssid[i + 2]) << 16;
1461 if (i + 3 < len)
1462 tmp |= (u32) (ssid[i + 3]) << 24;
1463 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1464 }
1465 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1466 }
1467
1468 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1469 {
1470 b43_time_lock(dev);
1471 if (dev->dev->id.revision >= 3) {
1472 b43_write32(dev, 0x188, (beacon_int << 16));
1473 } else {
1474 b43_write16(dev, 0x606, (beacon_int >> 6));
1475 b43_write16(dev, 0x610, beacon_int);
1476 }
1477 b43_time_unlock(dev);
1478 }
1479
1480 static void handle_irq_beacon(struct b43_wldev *dev)
1481 {
1482 struct b43_wl *wl = dev->wl;
1483 u32 cmd;
1484
1485 if (!b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
1486 return;
1487
1488 /* This is the bottom half of the asynchronous beacon update. */
1489
1490 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1491 if (!(cmd & B43_MACCMD_BEACON0_VALID)) {
1492 if (!wl->beacon0_uploaded) {
1493 b43_write_beacon_template(dev, 0x68, 0x18,
1494 B43_CCK_RATE_1MB);
1495 b43_write_probe_resp_template(dev, 0x268, 0x4A,
1496 &__b43_ratetable[3]);
1497 wl->beacon0_uploaded = 1;
1498 }
1499 cmd |= B43_MACCMD_BEACON0_VALID;
1500 }
1501 if (!(cmd & B43_MACCMD_BEACON1_VALID)) {
1502 if (!wl->beacon1_uploaded) {
1503 b43_write_beacon_template(dev, 0x468, 0x1A,
1504 B43_CCK_RATE_1MB);
1505 wl->beacon1_uploaded = 1;
1506 }
1507 cmd |= B43_MACCMD_BEACON1_VALID;
1508 }
1509 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1510 }
1511
1512 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1513 {
1514 //TODO
1515 }
1516
1517 /* Interrupt handler bottom-half */
1518 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1519 {
1520 u32 reason;
1521 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1522 u32 merged_dma_reason = 0;
1523 int i;
1524 unsigned long flags;
1525
1526 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1527
1528 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1529
1530 reason = dev->irq_reason;
1531 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1532 dma_reason[i] = dev->dma_reason[i];
1533 merged_dma_reason |= dma_reason[i];
1534 }
1535
1536 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1537 b43err(dev->wl, "MAC transmission error\n");
1538
1539 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1540 b43err(dev->wl, "PHY transmission error\n");
1541 rmb();
1542 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1543 atomic_set(&dev->phy.txerr_cnt,
1544 B43_PHY_TX_BADNESS_LIMIT);
1545 b43err(dev->wl, "Too many PHY TX errors, "
1546 "restarting the controller\n");
1547 b43_controller_restart(dev, "PHY TX errors");
1548 }
1549 }
1550
1551 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1552 B43_DMAIRQ_NONFATALMASK))) {
1553 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1554 b43err(dev->wl, "Fatal DMA error: "
1555 "0x%08X, 0x%08X, 0x%08X, "
1556 "0x%08X, 0x%08X, 0x%08X\n",
1557 dma_reason[0], dma_reason[1],
1558 dma_reason[2], dma_reason[3],
1559 dma_reason[4], dma_reason[5]);
1560 b43_controller_restart(dev, "DMA error");
1561 mmiowb();
1562 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1563 return;
1564 }
1565 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1566 b43err(dev->wl, "DMA error: "
1567 "0x%08X, 0x%08X, 0x%08X, "
1568 "0x%08X, 0x%08X, 0x%08X\n",
1569 dma_reason[0], dma_reason[1],
1570 dma_reason[2], dma_reason[3],
1571 dma_reason[4], dma_reason[5]);
1572 }
1573 }
1574
1575 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1576 handle_irq_ucode_debug(dev);
1577 if (reason & B43_IRQ_TBTT_INDI)
1578 handle_irq_tbtt_indication(dev);
1579 if (reason & B43_IRQ_ATIM_END)
1580 handle_irq_atim_end(dev);
1581 if (reason & B43_IRQ_BEACON)
1582 handle_irq_beacon(dev);
1583 if (reason & B43_IRQ_PMQ)
1584 handle_irq_pmq(dev);
1585 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1586 ;/* TODO */
1587 if (reason & B43_IRQ_NOISESAMPLE_OK)
1588 handle_irq_noise(dev);
1589
1590 /* Check the DMA reason registers for received data. */
1591 if (dma_reason[0] & B43_DMAIRQ_RX_DONE)
1592 b43_dma_rx(dev->dma.rx_ring0);
1593 if (dma_reason[3] & B43_DMAIRQ_RX_DONE)
1594 b43_dma_rx(dev->dma.rx_ring3);
1595 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1596 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1597 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1598 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1599
1600 if (reason & B43_IRQ_TX_OK)
1601 handle_irq_transmit_status(dev);
1602
1603 b43_interrupt_enable(dev, dev->irq_savedstate);
1604 mmiowb();
1605 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1606 }
1607
1608 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1609 {
1610 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1611
1612 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1613 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1614 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1615 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1616 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1617 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1618 }
1619
1620 /* Interrupt handler top-half */
1621 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1622 {
1623 irqreturn_t ret = IRQ_NONE;
1624 struct b43_wldev *dev = dev_id;
1625 u32 reason;
1626
1627 if (!dev)
1628 return IRQ_NONE;
1629
1630 spin_lock(&dev->wl->irq_lock);
1631
1632 if (b43_status(dev) < B43_STAT_STARTED)
1633 goto out;
1634 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1635 if (reason == 0xffffffff) /* shared IRQ */
1636 goto out;
1637 ret = IRQ_HANDLED;
1638 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1639 if (!reason)
1640 goto out;
1641
1642 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1643 & 0x0001DC00;
1644 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1645 & 0x0000DC00;
1646 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1647 & 0x0000DC00;
1648 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1649 & 0x0001DC00;
1650 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1651 & 0x0000DC00;
1652 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1653 & 0x0000DC00;
1654
1655 b43_interrupt_ack(dev, reason);
1656 /* disable all IRQs. They are enabled again in the bottom half. */
1657 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1658 /* save the reason code and call our bottom half. */
1659 dev->irq_reason = reason;
1660 tasklet_schedule(&dev->isr_tasklet);
1661 out:
1662 mmiowb();
1663 spin_unlock(&dev->wl->irq_lock);
1664
1665 return ret;
1666 }
1667
1668 static void do_release_fw(struct b43_firmware_file *fw)
1669 {
1670 release_firmware(fw->data);
1671 fw->data = NULL;
1672 fw->filename = NULL;
1673 }
1674
1675 static void b43_release_firmware(struct b43_wldev *dev)
1676 {
1677 do_release_fw(&dev->fw.ucode);
1678 do_release_fw(&dev->fw.pcm);
1679 do_release_fw(&dev->fw.initvals);
1680 do_release_fw(&dev->fw.initvals_band);
1681 }
1682
1683 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1684 {
1685 const char *text;
1686
1687 text = "You must go to "
1688 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1689 "and download the latest firmware (version 4).\n";
1690 if (error)
1691 b43err(wl, text);
1692 else
1693 b43warn(wl, text);
1694 }
1695
1696 static int do_request_fw(struct b43_wldev *dev,
1697 const char *name,
1698 struct b43_firmware_file *fw)
1699 {
1700 char path[sizeof(modparam_fwpostfix) + 32];
1701 const struct firmware *blob;
1702 struct b43_fw_header *hdr;
1703 u32 size;
1704 int err;
1705
1706 if (!name) {
1707 /* Don't fetch anything. Free possibly cached firmware. */
1708 do_release_fw(fw);
1709 return 0;
1710 }
1711 if (fw->filename) {
1712 if (strcmp(fw->filename, name) == 0)
1713 return 0; /* Already have this fw. */
1714 /* Free the cached firmware first. */
1715 do_release_fw(fw);
1716 }
1717
1718 snprintf(path, ARRAY_SIZE(path),
1719 "b43%s/%s.fw",
1720 modparam_fwpostfix, name);
1721 err = request_firmware(&blob, path, dev->dev->dev);
1722 if (err) {
1723 b43err(dev->wl, "Firmware file \"%s\" not found "
1724 "or load failed.\n", path);
1725 return err;
1726 }
1727 if (blob->size < sizeof(struct b43_fw_header))
1728 goto err_format;
1729 hdr = (struct b43_fw_header *)(blob->data);
1730 switch (hdr->type) {
1731 case B43_FW_TYPE_UCODE:
1732 case B43_FW_TYPE_PCM:
1733 size = be32_to_cpu(hdr->size);
1734 if (size != blob->size - sizeof(struct b43_fw_header))
1735 goto err_format;
1736 /* fallthrough */
1737 case B43_FW_TYPE_IV:
1738 if (hdr->ver != 1)
1739 goto err_format;
1740 break;
1741 default:
1742 goto err_format;
1743 }
1744
1745 fw->data = blob;
1746 fw->filename = name;
1747
1748 return 0;
1749
1750 err_format:
1751 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1752 release_firmware(blob);
1753
1754 return -EPROTO;
1755 }
1756
1757 static int b43_request_firmware(struct b43_wldev *dev)
1758 {
1759 struct b43_firmware *fw = &dev->fw;
1760 const u8 rev = dev->dev->id.revision;
1761 const char *filename;
1762 u32 tmshigh;
1763 int err;
1764
1765 /* Get microcode */
1766 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1767 if ((rev >= 5) && (rev <= 10))
1768 filename = "ucode5";
1769 else if ((rev >= 11) && (rev <= 12))
1770 filename = "ucode11";
1771 else if (rev >= 13)
1772 filename = "ucode13";
1773 else
1774 goto err_no_ucode;
1775 err = do_request_fw(dev, filename, &fw->ucode);
1776 if (err)
1777 goto err_load;
1778
1779 /* Get PCM code */
1780 if ((rev >= 5) && (rev <= 10))
1781 filename = "pcm5";
1782 else if (rev >= 11)
1783 filename = NULL;
1784 else
1785 goto err_no_pcm;
1786 err = do_request_fw(dev, filename, &fw->pcm);
1787 if (err)
1788 goto err_load;
1789
1790 /* Get initvals */
1791 switch (dev->phy.type) {
1792 case B43_PHYTYPE_A:
1793 if ((rev >= 5) && (rev <= 10)) {
1794 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
1795 filename = "a0g1initvals5";
1796 else
1797 filename = "a0g0initvals5";
1798 } else
1799 goto err_no_initvals;
1800 break;
1801 case B43_PHYTYPE_G:
1802 if ((rev >= 5) && (rev <= 10))
1803 filename = "b0g0initvals5";
1804 else if (rev >= 13)
1805 filename = "lp0initvals13";
1806 else
1807 goto err_no_initvals;
1808 break;
1809 case B43_PHYTYPE_N:
1810 if ((rev >= 11) && (rev <= 12))
1811 filename = "n0initvals11";
1812 else
1813 goto err_no_initvals;
1814 break;
1815 default:
1816 goto err_no_initvals;
1817 }
1818 err = do_request_fw(dev, filename, &fw->initvals);
1819 if (err)
1820 goto err_load;
1821
1822 /* Get bandswitch initvals */
1823 switch (dev->phy.type) {
1824 case B43_PHYTYPE_A:
1825 if ((rev >= 5) && (rev <= 10)) {
1826 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
1827 filename = "a0g1bsinitvals5";
1828 else
1829 filename = "a0g0bsinitvals5";
1830 } else if (rev >= 11)
1831 filename = NULL;
1832 else
1833 goto err_no_initvals;
1834 break;
1835 case B43_PHYTYPE_G:
1836 if ((rev >= 5) && (rev <= 10))
1837 filename = "b0g0bsinitvals5";
1838 else if (rev >= 11)
1839 filename = NULL;
1840 else
1841 goto err_no_initvals;
1842 break;
1843 case B43_PHYTYPE_N:
1844 if ((rev >= 11) && (rev <= 12))
1845 filename = "n0bsinitvals11";
1846 else
1847 goto err_no_initvals;
1848 break;
1849 default:
1850 goto err_no_initvals;
1851 }
1852 err = do_request_fw(dev, filename, &fw->initvals_band);
1853 if (err)
1854 goto err_load;
1855
1856 return 0;
1857
1858 err_load:
1859 b43_print_fw_helptext(dev->wl, 1);
1860 goto error;
1861
1862 err_no_ucode:
1863 err = -ENODEV;
1864 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
1865 goto error;
1866
1867 err_no_pcm:
1868 err = -ENODEV;
1869 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
1870 goto error;
1871
1872 err_no_initvals:
1873 err = -ENODEV;
1874 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
1875 "core rev %u\n", dev->phy.type, rev);
1876 goto error;
1877
1878 error:
1879 b43_release_firmware(dev);
1880 return err;
1881 }
1882
1883 static int b43_upload_microcode(struct b43_wldev *dev)
1884 {
1885 const size_t hdr_len = sizeof(struct b43_fw_header);
1886 const __be32 *data;
1887 unsigned int i, len;
1888 u16 fwrev, fwpatch, fwdate, fwtime;
1889 u32 tmp, macctl;
1890 int err = 0;
1891
1892 /* Jump the microcode PSM to offset 0 */
1893 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1894 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
1895 macctl |= B43_MACCTL_PSM_JMP0;
1896 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1897 /* Zero out all microcode PSM registers and shared memory. */
1898 for (i = 0; i < 64; i++)
1899 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
1900 for (i = 0; i < 4096; i += 2)
1901 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
1902
1903 /* Upload Microcode. */
1904 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
1905 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
1906 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
1907 for (i = 0; i < len; i++) {
1908 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1909 udelay(10);
1910 }
1911
1912 if (dev->fw.pcm.data) {
1913 /* Upload PCM data. */
1914 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
1915 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
1916 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
1917 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
1918 /* No need for autoinc bit in SHM_HW */
1919 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
1920 for (i = 0; i < len; i++) {
1921 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1922 udelay(10);
1923 }
1924 }
1925
1926 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
1927
1928 /* Start the microcode PSM */
1929 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1930 macctl &= ~B43_MACCTL_PSM_JMP0;
1931 macctl |= B43_MACCTL_PSM_RUN;
1932 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1933
1934 /* Wait for the microcode to load and respond */
1935 i = 0;
1936 while (1) {
1937 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1938 if (tmp == B43_IRQ_MAC_SUSPENDED)
1939 break;
1940 i++;
1941 if (i >= 20) {
1942 b43err(dev->wl, "Microcode not responding\n");
1943 b43_print_fw_helptext(dev->wl, 1);
1944 err = -ENODEV;
1945 goto error;
1946 }
1947 msleep_interruptible(50);
1948 if (signal_pending(current)) {
1949 err = -EINTR;
1950 goto error;
1951 }
1952 }
1953 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
1954
1955 /* Get and check the revisions. */
1956 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
1957 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
1958 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
1959 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
1960
1961 if (fwrev <= 0x128) {
1962 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
1963 "binary drivers older than version 4.x is unsupported. "
1964 "You must upgrade your firmware files.\n");
1965 b43_print_fw_helptext(dev->wl, 1);
1966 err = -EOPNOTSUPP;
1967 goto error;
1968 }
1969 b43info(dev->wl, "Loading firmware version %u.%u "
1970 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
1971 fwrev, fwpatch,
1972 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1973 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
1974
1975 dev->fw.rev = fwrev;
1976 dev->fw.patch = fwpatch;
1977
1978 if (b43_is_old_txhdr_format(dev)) {
1979 b43warn(dev->wl, "You are using an old firmware image. "
1980 "Support for old firmware will be removed in July 2008.\n");
1981 b43_print_fw_helptext(dev->wl, 0);
1982 }
1983
1984 return 0;
1985
1986 error:
1987 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1988 macctl &= ~B43_MACCTL_PSM_RUN;
1989 macctl |= B43_MACCTL_PSM_JMP0;
1990 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1991
1992 return err;
1993 }
1994
1995 static int b43_write_initvals(struct b43_wldev *dev,
1996 const struct b43_iv *ivals,
1997 size_t count,
1998 size_t array_size)
1999 {
2000 const struct b43_iv *iv;
2001 u16 offset;
2002 size_t i;
2003 bool bit32;
2004
2005 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2006 iv = ivals;
2007 for (i = 0; i < count; i++) {
2008 if (array_size < sizeof(iv->offset_size))
2009 goto err_format;
2010 array_size -= sizeof(iv->offset_size);
2011 offset = be16_to_cpu(iv->offset_size);
2012 bit32 = !!(offset & B43_IV_32BIT);
2013 offset &= B43_IV_OFFSET_MASK;
2014 if (offset >= 0x1000)
2015 goto err_format;
2016 if (bit32) {
2017 u32 value;
2018
2019 if (array_size < sizeof(iv->data.d32))
2020 goto err_format;
2021 array_size -= sizeof(iv->data.d32);
2022
2023 value = be32_to_cpu(get_unaligned(&iv->data.d32));
2024 b43_write32(dev, offset, value);
2025
2026 iv = (const struct b43_iv *)((const uint8_t *)iv +
2027 sizeof(__be16) +
2028 sizeof(__be32));
2029 } else {
2030 u16 value;
2031
2032 if (array_size < sizeof(iv->data.d16))
2033 goto err_format;
2034 array_size -= sizeof(iv->data.d16);
2035
2036 value = be16_to_cpu(iv->data.d16);
2037 b43_write16(dev, offset, value);
2038
2039 iv = (const struct b43_iv *)((const uint8_t *)iv +
2040 sizeof(__be16) +
2041 sizeof(__be16));
2042 }
2043 }
2044 if (array_size)
2045 goto err_format;
2046
2047 return 0;
2048
2049 err_format:
2050 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2051 b43_print_fw_helptext(dev->wl, 1);
2052
2053 return -EPROTO;
2054 }
2055
2056 static int b43_upload_initvals(struct b43_wldev *dev)
2057 {
2058 const size_t hdr_len = sizeof(struct b43_fw_header);
2059 const struct b43_fw_header *hdr;
2060 struct b43_firmware *fw = &dev->fw;
2061 const struct b43_iv *ivals;
2062 size_t count;
2063 int err;
2064
2065 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2066 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2067 count = be32_to_cpu(hdr->size);
2068 err = b43_write_initvals(dev, ivals, count,
2069 fw->initvals.data->size - hdr_len);
2070 if (err)
2071 goto out;
2072 if (fw->initvals_band.data) {
2073 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2074 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2075 count = be32_to_cpu(hdr->size);
2076 err = b43_write_initvals(dev, ivals, count,
2077 fw->initvals_band.data->size - hdr_len);
2078 if (err)
2079 goto out;
2080 }
2081 out:
2082
2083 return err;
2084 }
2085
2086 /* Initialize the GPIOs
2087 * http://bcm-specs.sipsolutions.net/GPIO
2088 */
2089 static int b43_gpio_init(struct b43_wldev *dev)
2090 {
2091 struct ssb_bus *bus = dev->dev->bus;
2092 struct ssb_device *gpiodev, *pcidev = NULL;
2093 u32 mask, set;
2094
2095 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2096 & ~B43_MACCTL_GPOUTSMSK);
2097
2098 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2099 | 0x000F);
2100
2101 mask = 0x0000001F;
2102 set = 0x0000000F;
2103 if (dev->dev->bus->chip_id == 0x4301) {
2104 mask |= 0x0060;
2105 set |= 0x0060;
2106 }
2107 if (0 /* FIXME: conditional unknown */ ) {
2108 b43_write16(dev, B43_MMIO_GPIO_MASK,
2109 b43_read16(dev, B43_MMIO_GPIO_MASK)
2110 | 0x0100);
2111 mask |= 0x0180;
2112 set |= 0x0180;
2113 }
2114 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2115 b43_write16(dev, B43_MMIO_GPIO_MASK,
2116 b43_read16(dev, B43_MMIO_GPIO_MASK)
2117 | 0x0200);
2118 mask |= 0x0200;
2119 set |= 0x0200;
2120 }
2121 if (dev->dev->id.revision >= 2)
2122 mask |= 0x0010; /* FIXME: This is redundant. */
2123
2124 #ifdef CONFIG_SSB_DRIVER_PCICORE
2125 pcidev = bus->pcicore.dev;
2126 #endif
2127 gpiodev = bus->chipco.dev ? : pcidev;
2128 if (!gpiodev)
2129 return 0;
2130 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2131 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2132 & mask) | set);
2133
2134 return 0;
2135 }
2136
2137 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2138 static void b43_gpio_cleanup(struct b43_wldev *dev)
2139 {
2140 struct ssb_bus *bus = dev->dev->bus;
2141 struct ssb_device *gpiodev, *pcidev = NULL;
2142
2143 #ifdef CONFIG_SSB_DRIVER_PCICORE
2144 pcidev = bus->pcicore.dev;
2145 #endif
2146 gpiodev = bus->chipco.dev ? : pcidev;
2147 if (!gpiodev)
2148 return;
2149 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2150 }
2151
2152 /* http://bcm-specs.sipsolutions.net/EnableMac */
2153 void b43_mac_enable(struct b43_wldev *dev)
2154 {
2155 dev->mac_suspended--;
2156 B43_WARN_ON(dev->mac_suspended < 0);
2157 B43_WARN_ON(irqs_disabled());
2158 if (dev->mac_suspended == 0) {
2159 b43_write32(dev, B43_MMIO_MACCTL,
2160 b43_read32(dev, B43_MMIO_MACCTL)
2161 | B43_MACCTL_ENABLED);
2162 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2163 B43_IRQ_MAC_SUSPENDED);
2164 /* Commit writes */
2165 b43_read32(dev, B43_MMIO_MACCTL);
2166 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2167 b43_power_saving_ctl_bits(dev, 0);
2168
2169 /* Re-enable IRQs. */
2170 spin_lock_irq(&dev->wl->irq_lock);
2171 b43_interrupt_enable(dev, dev->irq_savedstate);
2172 spin_unlock_irq(&dev->wl->irq_lock);
2173 }
2174 }
2175
2176 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2177 void b43_mac_suspend(struct b43_wldev *dev)
2178 {
2179 int i;
2180 u32 tmp;
2181
2182 might_sleep();
2183 B43_WARN_ON(irqs_disabled());
2184 B43_WARN_ON(dev->mac_suspended < 0);
2185
2186 if (dev->mac_suspended == 0) {
2187 /* Mask IRQs before suspending MAC. Otherwise
2188 * the MAC stays busy and won't suspend. */
2189 spin_lock_irq(&dev->wl->irq_lock);
2190 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
2191 spin_unlock_irq(&dev->wl->irq_lock);
2192 b43_synchronize_irq(dev);
2193 dev->irq_savedstate = tmp;
2194
2195 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2196 b43_write32(dev, B43_MMIO_MACCTL,
2197 b43_read32(dev, B43_MMIO_MACCTL)
2198 & ~B43_MACCTL_ENABLED);
2199 /* force pci to flush the write */
2200 b43_read32(dev, B43_MMIO_MACCTL);
2201 for (i = 40; i; i--) {
2202 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2203 if (tmp & B43_IRQ_MAC_SUSPENDED)
2204 goto out;
2205 msleep(1);
2206 }
2207 b43err(dev->wl, "MAC suspend failed\n");
2208 }
2209 out:
2210 dev->mac_suspended++;
2211 }
2212
2213 static void b43_adjust_opmode(struct b43_wldev *dev)
2214 {
2215 struct b43_wl *wl = dev->wl;
2216 u32 ctl;
2217 u16 cfp_pretbtt;
2218
2219 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2220 /* Reset status to STA infrastructure mode. */
2221 ctl &= ~B43_MACCTL_AP;
2222 ctl &= ~B43_MACCTL_KEEP_CTL;
2223 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2224 ctl &= ~B43_MACCTL_KEEP_BAD;
2225 ctl &= ~B43_MACCTL_PROMISC;
2226 ctl &= ~B43_MACCTL_BEACPROMISC;
2227 ctl |= B43_MACCTL_INFRA;
2228
2229 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2230 ctl |= B43_MACCTL_AP;
2231 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2232 ctl &= ~B43_MACCTL_INFRA;
2233
2234 if (wl->filter_flags & FIF_CONTROL)
2235 ctl |= B43_MACCTL_KEEP_CTL;
2236 if (wl->filter_flags & FIF_FCSFAIL)
2237 ctl |= B43_MACCTL_KEEP_BAD;
2238 if (wl->filter_flags & FIF_PLCPFAIL)
2239 ctl |= B43_MACCTL_KEEP_BADPLCP;
2240 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2241 ctl |= B43_MACCTL_PROMISC;
2242 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2243 ctl |= B43_MACCTL_BEACPROMISC;
2244
2245 /* Workaround: On old hardware the HW-MAC-address-filter
2246 * doesn't work properly, so always run promisc in filter
2247 * it in software. */
2248 if (dev->dev->id.revision <= 4)
2249 ctl |= B43_MACCTL_PROMISC;
2250
2251 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2252
2253 cfp_pretbtt = 2;
2254 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2255 if (dev->dev->bus->chip_id == 0x4306 &&
2256 dev->dev->bus->chip_rev == 3)
2257 cfp_pretbtt = 100;
2258 else
2259 cfp_pretbtt = 50;
2260 }
2261 b43_write16(dev, 0x612, cfp_pretbtt);
2262 }
2263
2264 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2265 {
2266 u16 offset;
2267
2268 if (is_ofdm) {
2269 offset = 0x480;
2270 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2271 } else {
2272 offset = 0x4C0;
2273 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2274 }
2275 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2276 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2277 }
2278
2279 static void b43_rate_memory_init(struct b43_wldev *dev)
2280 {
2281 switch (dev->phy.type) {
2282 case B43_PHYTYPE_A:
2283 case B43_PHYTYPE_G:
2284 case B43_PHYTYPE_N:
2285 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2286 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2287 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2288 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2289 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2290 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2291 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2292 if (dev->phy.type == B43_PHYTYPE_A)
2293 break;
2294 /* fallthrough */
2295 case B43_PHYTYPE_B:
2296 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2297 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2298 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2299 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2300 break;
2301 default:
2302 B43_WARN_ON(1);
2303 }
2304 }
2305
2306 /* Set the TX-Antenna for management frames sent by firmware. */
2307 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2308 {
2309 u16 ant = 0;
2310 u16 tmp;
2311
2312 switch (antenna) {
2313 case B43_ANTENNA0:
2314 ant |= B43_TXH_PHY_ANT0;
2315 break;
2316 case B43_ANTENNA1:
2317 ant |= B43_TXH_PHY_ANT1;
2318 break;
2319 case B43_ANTENNA2:
2320 ant |= B43_TXH_PHY_ANT2;
2321 break;
2322 case B43_ANTENNA3:
2323 ant |= B43_TXH_PHY_ANT3;
2324 break;
2325 case B43_ANTENNA_AUTO:
2326 ant |= B43_TXH_PHY_ANT01AUTO;
2327 break;
2328 default:
2329 B43_WARN_ON(1);
2330 }
2331
2332 /* FIXME We also need to set the other flags of the PHY control field somewhere. */
2333
2334 /* For Beacons */
2335 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
2336 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2337 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
2338 /* For ACK/CTS */
2339 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2340 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2341 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2342 /* For Probe Resposes */
2343 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2344 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2345 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2346 }
2347
2348 /* This is the opposite of b43_chip_init() */
2349 static void b43_chip_exit(struct b43_wldev *dev)
2350 {
2351 b43_radio_turn_off(dev, 1);
2352 b43_gpio_cleanup(dev);
2353 /* firmware is released later */
2354 }
2355
2356 /* Initialize the chip
2357 * http://bcm-specs.sipsolutions.net/ChipInit
2358 */
2359 static int b43_chip_init(struct b43_wldev *dev)
2360 {
2361 struct b43_phy *phy = &dev->phy;
2362 int err, tmp;
2363 u32 value32, macctl;
2364 u16 value16;
2365
2366 /* Initialize the MAC control */
2367 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2368 if (dev->phy.gmode)
2369 macctl |= B43_MACCTL_GMODE;
2370 macctl |= B43_MACCTL_INFRA;
2371 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2372
2373 err = b43_request_firmware(dev);
2374 if (err)
2375 goto out;
2376 err = b43_upload_microcode(dev);
2377 if (err)
2378 goto out; /* firmware is released later */
2379
2380 err = b43_gpio_init(dev);
2381 if (err)
2382 goto out; /* firmware is released later */
2383
2384 err = b43_upload_initvals(dev);
2385 if (err)
2386 goto err_gpio_clean;
2387 b43_radio_turn_on(dev);
2388
2389 b43_write16(dev, 0x03E6, 0x0000);
2390 err = b43_phy_init(dev);
2391 if (err)
2392 goto err_radio_off;
2393
2394 /* Select initial Interference Mitigation. */
2395 tmp = phy->interfmode;
2396 phy->interfmode = B43_INTERFMODE_NONE;
2397 b43_radio_set_interference_mitigation(dev, tmp);
2398
2399 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2400 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2401
2402 if (phy->type == B43_PHYTYPE_B) {
2403 value16 = b43_read16(dev, 0x005E);
2404 value16 |= 0x0004;
2405 b43_write16(dev, 0x005E, value16);
2406 }
2407 b43_write32(dev, 0x0100, 0x01000000);
2408 if (dev->dev->id.revision < 5)
2409 b43_write32(dev, 0x010C, 0x01000000);
2410
2411 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2412 & ~B43_MACCTL_INFRA);
2413 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2414 | B43_MACCTL_INFRA);
2415
2416 /* Probe Response Timeout value */
2417 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2418 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2419
2420 /* Initially set the wireless operation mode. */
2421 b43_adjust_opmode(dev);
2422
2423 if (dev->dev->id.revision < 3) {
2424 b43_write16(dev, 0x060E, 0x0000);
2425 b43_write16(dev, 0x0610, 0x8000);
2426 b43_write16(dev, 0x0604, 0x0000);
2427 b43_write16(dev, 0x0606, 0x0200);
2428 } else {
2429 b43_write32(dev, 0x0188, 0x80000000);
2430 b43_write32(dev, 0x018C, 0x02000000);
2431 }
2432 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2433 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2434 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2435 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2436 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2437 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2438 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2439
2440 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2441 value32 |= 0x00100000;
2442 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2443
2444 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2445 dev->dev->bus->chipco.fast_pwrup_delay);
2446
2447 err = 0;
2448 b43dbg(dev->wl, "Chip initialized\n");
2449 out:
2450 return err;
2451
2452 err_radio_off:
2453 b43_radio_turn_off(dev, 1);
2454 err_gpio_clean:
2455 b43_gpio_cleanup(dev);
2456 return err;
2457 }
2458
2459 static void b43_periodic_every120sec(struct b43_wldev *dev)
2460 {
2461 struct b43_phy *phy = &dev->phy;
2462
2463 if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2464 return;
2465
2466 b43_mac_suspend(dev);
2467 b43_lo_g_measure(dev);
2468 b43_mac_enable(dev);
2469 if (b43_has_hardware_pctl(phy))
2470 b43_lo_g_ctl_mark_all_unused(dev);
2471 }
2472
2473 static void b43_periodic_every60sec(struct b43_wldev *dev)
2474 {
2475 struct b43_phy *phy = &dev->phy;
2476
2477 if (phy->type != B43_PHYTYPE_G)
2478 return;
2479 if (!b43_has_hardware_pctl(phy))
2480 b43_lo_g_ctl_mark_all_unused(dev);
2481 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2482 b43_mac_suspend(dev);
2483 b43_calc_nrssi_slope(dev);
2484 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2485 u8 old_chan = phy->channel;
2486
2487 /* VCO Calibration */
2488 if (old_chan >= 8)
2489 b43_radio_selectchannel(dev, 1, 0);
2490 else
2491 b43_radio_selectchannel(dev, 13, 0);
2492 b43_radio_selectchannel(dev, old_chan, 0);
2493 }
2494 b43_mac_enable(dev);
2495 }
2496 }
2497
2498 static void b43_periodic_every30sec(struct b43_wldev *dev)
2499 {
2500 /* Update device statistics. */
2501 b43_calculate_link_quality(dev);
2502 }
2503
2504 static void b43_periodic_every15sec(struct b43_wldev *dev)
2505 {
2506 struct b43_phy *phy = &dev->phy;
2507
2508 if (phy->type == B43_PHYTYPE_G) {
2509 //TODO: update_aci_moving_average
2510 if (phy->aci_enable && phy->aci_wlan_automatic) {
2511 b43_mac_suspend(dev);
2512 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2513 if (0 /*TODO: bunch of conditions */ ) {
2514 b43_radio_set_interference_mitigation
2515 (dev, B43_INTERFMODE_MANUALWLAN);
2516 }
2517 } else if (1 /*TODO*/) {
2518 /*
2519 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2520 b43_radio_set_interference_mitigation(dev,
2521 B43_INTERFMODE_NONE);
2522 }
2523 */
2524 }
2525 b43_mac_enable(dev);
2526 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2527 phy->rev == 1) {
2528 //TODO: implement rev1 workaround
2529 }
2530 }
2531 b43_phy_xmitpower(dev); //FIXME: unless scanning?
2532 //TODO for APHY (temperature?)
2533
2534 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2535 wmb();
2536 }
2537
2538 static void do_periodic_work(struct b43_wldev *dev)
2539 {
2540 unsigned int state;
2541
2542 state = dev->periodic_state;
2543 if (state % 8 == 0)
2544 b43_periodic_every120sec(dev);
2545 if (state % 4 == 0)
2546 b43_periodic_every60sec(dev);
2547 if (state % 2 == 0)
2548 b43_periodic_every30sec(dev);
2549 b43_periodic_every15sec(dev);
2550 }
2551
2552 /* Periodic work locking policy:
2553 * The whole periodic work handler is protected by
2554 * wl->mutex. If another lock is needed somewhere in the
2555 * pwork callchain, it's aquired in-place, where it's needed.
2556 */
2557 static void b43_periodic_work_handler(struct work_struct *work)
2558 {
2559 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2560 periodic_work.work);
2561 struct b43_wl *wl = dev->wl;
2562 unsigned long delay;
2563
2564 mutex_lock(&wl->mutex);
2565
2566 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2567 goto out;
2568 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2569 goto out_requeue;
2570
2571 do_periodic_work(dev);
2572
2573 dev->periodic_state++;
2574 out_requeue:
2575 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2576 delay = msecs_to_jiffies(50);
2577 else
2578 delay = round_jiffies_relative(HZ * 15);
2579 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2580 out:
2581 mutex_unlock(&wl->mutex);
2582 }
2583
2584 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2585 {
2586 struct delayed_work *work = &dev->periodic_work;
2587
2588 dev->periodic_state = 0;
2589 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2590 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2591 }
2592
2593 /* Check if communication with the device works correctly. */
2594 static int b43_validate_chipaccess(struct b43_wldev *dev)
2595 {
2596 u32 v, backup;
2597
2598 backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2599
2600 /* Check for read/write and endianness problems. */
2601 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2602 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2603 goto error;
2604 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2605 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2606 goto error;
2607
2608 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2609
2610 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2611 /* The 32bit register shadows the two 16bit registers
2612 * with update sideeffects. Validate this. */
2613 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2614 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2615 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2616 goto error;
2617 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2618 goto error;
2619 }
2620 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2621
2622 v = b43_read32(dev, B43_MMIO_MACCTL);
2623 v |= B43_MACCTL_GMODE;
2624 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2625 goto error;
2626
2627 return 0;
2628 error:
2629 b43err(dev->wl, "Failed to validate the chipaccess\n");
2630 return -ENODEV;
2631 }
2632
2633 static void b43_security_init(struct b43_wldev *dev)
2634 {
2635 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2636 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2637 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2638 /* KTP is a word address, but we address SHM bytewise.
2639 * So multiply by two.
2640 */
2641 dev->ktp *= 2;
2642 if (dev->dev->id.revision >= 5) {
2643 /* Number of RCMTA address slots */
2644 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2645 }
2646 b43_clear_keys(dev);
2647 }
2648
2649 static int b43_rng_read(struct hwrng *rng, u32 * data)
2650 {
2651 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2652 unsigned long flags;
2653
2654 /* Don't take wl->mutex here, as it could deadlock with
2655 * hwrng internal locking. It's not needed to take
2656 * wl->mutex here, anyway. */
2657
2658 spin_lock_irqsave(&wl->irq_lock, flags);
2659 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2660 spin_unlock_irqrestore(&wl->irq_lock, flags);
2661
2662 return (sizeof(u16));
2663 }
2664
2665 static void b43_rng_exit(struct b43_wl *wl, bool suspended)
2666 {
2667 if (wl->rng_initialized)
2668 __hwrng_unregister(&wl->rng, suspended);
2669 }
2670
2671 static int b43_rng_init(struct b43_wl *wl)
2672 {
2673 int err;
2674
2675 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2676 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2677 wl->rng.name = wl->rng_name;
2678 wl->rng.data_read = b43_rng_read;
2679 wl->rng.priv = (unsigned long)wl;
2680 wl->rng_initialized = 1;
2681 err = hwrng_register(&wl->rng);
2682 if (err) {
2683 wl->rng_initialized = 0;
2684 b43err(wl, "Failed to register the random "
2685 "number generator (%d)\n", err);
2686 }
2687
2688 return err;
2689 }
2690
2691 static int b43_op_tx(struct ieee80211_hw *hw,
2692 struct sk_buff *skb,
2693 struct ieee80211_tx_control *ctl)
2694 {
2695 struct b43_wl *wl = hw_to_b43_wl(hw);
2696 struct b43_wldev *dev = wl->current_dev;
2697 int err = -ENODEV;
2698
2699 if (unlikely(!dev))
2700 goto out;
2701 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2702 goto out;
2703 /* DMA-TX is done without a global lock. */
2704 err = b43_dma_tx(dev, skb, ctl);
2705 out:
2706 if (unlikely(err))
2707 return NETDEV_TX_BUSY;
2708 return NETDEV_TX_OK;
2709 }
2710
2711 static int b43_op_conf_tx(struct ieee80211_hw *hw,
2712 int queue,
2713 const struct ieee80211_tx_queue_params *params)
2714 {
2715 return 0;
2716 }
2717
2718 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
2719 struct ieee80211_tx_queue_stats *stats)
2720 {
2721 struct b43_wl *wl = hw_to_b43_wl(hw);
2722 struct b43_wldev *dev = wl->current_dev;
2723 unsigned long flags;
2724 int err = -ENODEV;
2725
2726 if (!dev)
2727 goto out;
2728 spin_lock_irqsave(&wl->irq_lock, flags);
2729 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2730 b43_dma_get_tx_stats(dev, stats);
2731 err = 0;
2732 }
2733 spin_unlock_irqrestore(&wl->irq_lock, flags);
2734 out:
2735 return err;
2736 }
2737
2738 static int b43_op_get_stats(struct ieee80211_hw *hw,
2739 struct ieee80211_low_level_stats *stats)
2740 {
2741 struct b43_wl *wl = hw_to_b43_wl(hw);
2742 unsigned long flags;
2743
2744 spin_lock_irqsave(&wl->irq_lock, flags);
2745 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2746 spin_unlock_irqrestore(&wl->irq_lock, flags);
2747
2748 return 0;
2749 }
2750
2751 static void b43_put_phy_into_reset(struct b43_wldev *dev)
2752 {
2753 struct ssb_device *sdev = dev->dev;
2754 u32 tmslow;
2755
2756 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2757 tmslow &= ~B43_TMSLOW_GMODE;
2758 tmslow |= B43_TMSLOW_PHYRESET;
2759 tmslow |= SSB_TMSLOW_FGC;
2760 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2761 msleep(1);
2762
2763 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2764 tmslow &= ~SSB_TMSLOW_FGC;
2765 tmslow |= B43_TMSLOW_PHYRESET;
2766 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2767 msleep(1);
2768 }
2769
2770 static const char * band_to_string(enum ieee80211_band band)
2771 {
2772 switch (band) {
2773 case IEEE80211_BAND_5GHZ:
2774 return "5";
2775 case IEEE80211_BAND_2GHZ:
2776 return "2.4";
2777 default:
2778 break;
2779 }
2780 B43_WARN_ON(1);
2781 return "";
2782 }
2783
2784 /* Expects wl->mutex locked */
2785 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
2786 {
2787 struct b43_wldev *up_dev = NULL;
2788 struct b43_wldev *down_dev;
2789 struct b43_wldev *d;
2790 int err;
2791 bool gmode;
2792 int prev_status;
2793
2794 /* Find a device and PHY which supports the band. */
2795 list_for_each_entry(d, &wl->devlist, list) {
2796 switch (chan->band) {
2797 case IEEE80211_BAND_5GHZ:
2798 if (d->phy.supports_5ghz) {
2799 up_dev = d;
2800 gmode = 0;
2801 }
2802 break;
2803 case IEEE80211_BAND_2GHZ:
2804 if (d->phy.supports_2ghz) {
2805 up_dev = d;
2806 gmode = 1;
2807 }
2808 break;
2809 default:
2810 B43_WARN_ON(1);
2811 return -EINVAL;
2812 }
2813 if (up_dev)
2814 break;
2815 }
2816 if (!up_dev) {
2817 b43err(wl, "Could not find a device for %s-GHz band operation\n",
2818 band_to_string(chan->band));
2819 return -ENODEV;
2820 }
2821 if ((up_dev == wl->current_dev) &&
2822 (!!wl->current_dev->phy.gmode == !!gmode)) {
2823 /* This device is already running. */
2824 return 0;
2825 }
2826 b43dbg(wl, "Switching to %s-GHz band\n",
2827 band_to_string(chan->band));
2828 down_dev = wl->current_dev;
2829
2830 prev_status = b43_status(down_dev);
2831 /* Shutdown the currently running core. */
2832 if (prev_status >= B43_STAT_STARTED)
2833 b43_wireless_core_stop(down_dev);
2834 if (prev_status >= B43_STAT_INITIALIZED)
2835 b43_wireless_core_exit(down_dev);
2836
2837 if (down_dev != up_dev) {
2838 /* We switch to a different core, so we put PHY into
2839 * RESET on the old core. */
2840 b43_put_phy_into_reset(down_dev);
2841 }
2842
2843 /* Now start the new core. */
2844 up_dev->phy.gmode = gmode;
2845 if (prev_status >= B43_STAT_INITIALIZED) {
2846 err = b43_wireless_core_init(up_dev);
2847 if (err) {
2848 b43err(wl, "Fatal: Could not initialize device for "
2849 "selected %s-GHz band\n",
2850 band_to_string(chan->band));
2851 goto init_failure;
2852 }
2853 }
2854 if (prev_status >= B43_STAT_STARTED) {
2855 err = b43_wireless_core_start(up_dev);
2856 if (err) {
2857 b43err(wl, "Fatal: Coult not start device for "
2858 "selected %s-GHz band\n",
2859 band_to_string(chan->band));
2860 b43_wireless_core_exit(up_dev);
2861 goto init_failure;
2862 }
2863 }
2864 B43_WARN_ON(b43_status(up_dev) != prev_status);
2865
2866 wl->current_dev = up_dev;
2867
2868 return 0;
2869 init_failure:
2870 /* Whoops, failed to init the new core. No core is operating now. */
2871 wl->current_dev = NULL;
2872 return err;
2873 }
2874
2875 /* Check if the use of the antenna that ieee80211 told us to
2876 * use is possible. This will fall back to DEFAULT.
2877 * "antenna_nr" is the antenna identifier we got from ieee80211. */
2878 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
2879 u8 antenna_nr)
2880 {
2881 u8 antenna_mask;
2882
2883 if (antenna_nr == 0) {
2884 /* Zero means "use default antenna". That's always OK. */
2885 return 0;
2886 }
2887
2888 /* Get the mask of available antennas. */
2889 if (dev->phy.gmode)
2890 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
2891 else
2892 antenna_mask = dev->dev->bus->sprom.ant_available_a;
2893
2894 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
2895 /* This antenna is not available. Fall back to default. */
2896 return 0;
2897 }
2898
2899 return antenna_nr;
2900 }
2901
2902 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
2903 {
2904 antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
2905 switch (antenna) {
2906 case 0: /* default/diversity */
2907 return B43_ANTENNA_DEFAULT;
2908 case 1: /* Antenna 0 */
2909 return B43_ANTENNA0;
2910 case 2: /* Antenna 1 */
2911 return B43_ANTENNA1;
2912 case 3: /* Antenna 2 */
2913 return B43_ANTENNA2;
2914 case 4: /* Antenna 3 */
2915 return B43_ANTENNA3;
2916 default:
2917 return B43_ANTENNA_DEFAULT;
2918 }
2919 }
2920
2921 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2922 {
2923 struct b43_wl *wl = hw_to_b43_wl(hw);
2924 struct b43_wldev *dev;
2925 struct b43_phy *phy;
2926 unsigned long flags;
2927 int antenna;
2928 int err = 0;
2929 u32 savedirqs;
2930
2931 mutex_lock(&wl->mutex);
2932
2933 /* Switch the band (if necessary). This might change the active core. */
2934 err = b43_switch_band(wl, conf->channel);
2935 if (err)
2936 goto out_unlock_mutex;
2937 dev = wl->current_dev;
2938 phy = &dev->phy;
2939
2940 /* Disable IRQs while reconfiguring the device.
2941 * This makes it possible to drop the spinlock throughout
2942 * the reconfiguration process. */
2943 spin_lock_irqsave(&wl->irq_lock, flags);
2944 if (b43_status(dev) < B43_STAT_STARTED) {
2945 spin_unlock_irqrestore(&wl->irq_lock, flags);
2946 goto out_unlock_mutex;
2947 }
2948 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
2949 spin_unlock_irqrestore(&wl->irq_lock, flags);
2950 b43_synchronize_irq(dev);
2951
2952 /* Switch to the requested channel.
2953 * The firmware takes care of races with the TX handler. */
2954 if (conf->channel->hw_value != phy->channel)
2955 b43_radio_selectchannel(dev, conf->channel->hw_value, 0);
2956
2957 /* Enable/Disable ShortSlot timing. */
2958 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
2959 dev->short_slot) {
2960 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
2961 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
2962 b43_short_slot_timing_enable(dev);
2963 else
2964 b43_short_slot_timing_disable(dev);
2965 }
2966
2967 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2968
2969 /* Adjust the desired TX power level. */
2970 if (conf->power_level != 0) {
2971 if (conf->power_level != phy->power_level) {
2972 phy->power_level = conf->power_level;
2973 b43_phy_xmitpower(dev);
2974 }
2975 }
2976
2977 /* Antennas for RX and management frame TX. */
2978 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
2979 b43_mgmtframe_txantenna(dev, antenna);
2980 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
2981 b43_set_rx_antenna(dev, antenna);
2982
2983 /* Update templates for AP mode. */
2984 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2985 b43_set_beacon_int(dev, conf->beacon_int);
2986
2987 if (!!conf->radio_enabled != phy->radio_on) {
2988 if (conf->radio_enabled) {
2989 b43_radio_turn_on(dev);
2990 b43info(dev->wl, "Radio turned on by software\n");
2991 if (!dev->radio_hw_enable) {
2992 b43info(dev->wl, "The hardware RF-kill button "
2993 "still turns the radio physically off. "
2994 "Press the button to turn it on.\n");
2995 }
2996 } else {
2997 b43_radio_turn_off(dev, 0);
2998 b43info(dev->wl, "Radio turned off by software\n");
2999 }
3000 }
3001
3002 spin_lock_irqsave(&wl->irq_lock, flags);
3003 b43_interrupt_enable(dev, savedirqs);
3004 mmiowb();
3005 spin_unlock_irqrestore(&wl->irq_lock, flags);
3006 out_unlock_mutex:
3007 mutex_unlock(&wl->mutex);
3008
3009 return err;
3010 }
3011
3012 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3013 const u8 *local_addr, const u8 *addr,
3014 struct ieee80211_key_conf *key)
3015 {
3016 struct b43_wl *wl = hw_to_b43_wl(hw);
3017 struct b43_wldev *dev;
3018 unsigned long flags;
3019 u8 algorithm;
3020 u8 index;
3021 int err;
3022 DECLARE_MAC_BUF(mac);
3023
3024 if (modparam_nohwcrypt)
3025 return -ENOSPC; /* User disabled HW-crypto */
3026
3027 mutex_lock(&wl->mutex);
3028 spin_lock_irqsave(&wl->irq_lock, flags);
3029
3030 dev = wl->current_dev;
3031 err = -ENODEV;
3032 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3033 goto out_unlock;
3034
3035 err = -EINVAL;
3036 switch (key->alg) {
3037 case ALG_WEP:
3038 if (key->keylen == 5)
3039 algorithm = B43_SEC_ALGO_WEP40;
3040 else
3041 algorithm = B43_SEC_ALGO_WEP104;
3042 break;
3043 case ALG_TKIP:
3044 algorithm = B43_SEC_ALGO_TKIP;
3045 break;
3046 case ALG_CCMP:
3047 algorithm = B43_SEC_ALGO_AES;
3048 break;
3049 default:
3050 B43_WARN_ON(1);
3051 goto out_unlock;
3052 }
3053 index = (u8) (key->keyidx);
3054 if (index > 3)
3055 goto out_unlock;
3056
3057 switch (cmd) {
3058 case SET_KEY:
3059 if (algorithm == B43_SEC_ALGO_TKIP) {
3060 /* FIXME: No TKIP hardware encryption for now. */
3061 err = -EOPNOTSUPP;
3062 goto out_unlock;
3063 }
3064
3065 if (is_broadcast_ether_addr(addr)) {
3066 /* addr is FF:FF:FF:FF:FF:FF for default keys */
3067 err = b43_key_write(dev, index, algorithm,
3068 key->key, key->keylen, NULL, key);
3069 } else {
3070 /*
3071 * either pairwise key or address is 00:00:00:00:00:00
3072 * for transmit-only keys
3073 */
3074 err = b43_key_write(dev, -1, algorithm,
3075 key->key, key->keylen, addr, key);
3076 }
3077 if (err)
3078 goto out_unlock;
3079
3080 if (algorithm == B43_SEC_ALGO_WEP40 ||
3081 algorithm == B43_SEC_ALGO_WEP104) {
3082 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3083 } else {
3084 b43_hf_write(dev,
3085 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3086 }
3087 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3088 break;
3089 case DISABLE_KEY: {
3090 err = b43_key_clear(dev, key->hw_key_idx);
3091 if (err)
3092 goto out_unlock;
3093 break;
3094 }
3095 default:
3096 B43_WARN_ON(1);
3097 }
3098 out_unlock:
3099 spin_unlock_irqrestore(&wl->irq_lock, flags);
3100 mutex_unlock(&wl->mutex);
3101 if (!err) {
3102 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3103 "mac: %s\n",
3104 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3105 print_mac(mac, addr));
3106 }
3107 return err;
3108 }
3109
3110 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3111 unsigned int changed, unsigned int *fflags,
3112 int mc_count, struct dev_addr_list *mc_list)
3113 {
3114 struct b43_wl *wl = hw_to_b43_wl(hw);
3115 struct b43_wldev *dev = wl->current_dev;
3116 unsigned long flags;
3117
3118 if (!dev) {
3119 *fflags = 0;
3120 return;
3121 }
3122
3123 spin_lock_irqsave(&wl->irq_lock, flags);
3124 *fflags &= FIF_PROMISC_IN_BSS |
3125 FIF_ALLMULTI |
3126 FIF_FCSFAIL |
3127 FIF_PLCPFAIL |
3128 FIF_CONTROL |
3129 FIF_OTHER_BSS |
3130 FIF_BCN_PRBRESP_PROMISC;
3131
3132 changed &= FIF_PROMISC_IN_BSS |
3133 FIF_ALLMULTI |
3134 FIF_FCSFAIL |
3135 FIF_PLCPFAIL |
3136 FIF_CONTROL |
3137 FIF_OTHER_BSS |
3138 FIF_BCN_PRBRESP_PROMISC;
3139
3140 wl->filter_flags = *fflags;
3141
3142 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3143 b43_adjust_opmode(dev);
3144 spin_unlock_irqrestore(&wl->irq_lock, flags);
3145 }
3146
3147 static int b43_op_config_interface(struct ieee80211_hw *hw,
3148 struct ieee80211_vif *vif,
3149 struct ieee80211_if_conf *conf)
3150 {
3151 struct b43_wl *wl = hw_to_b43_wl(hw);
3152 struct b43_wldev *dev = wl->current_dev;
3153 unsigned long flags;
3154
3155 if (!dev)
3156 return -ENODEV;
3157 mutex_lock(&wl->mutex);
3158 spin_lock_irqsave(&wl->irq_lock, flags);
3159 B43_WARN_ON(wl->vif != vif);
3160 if (conf->bssid)
3161 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3162 else
3163 memset(wl->bssid, 0, ETH_ALEN);
3164 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3165 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
3166 B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
3167 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3168 if (conf->beacon)
3169 b43_update_templates(wl, conf->beacon);
3170 }
3171 b43_write_mac_bssid_templates(dev);
3172 }
3173 spin_unlock_irqrestore(&wl->irq_lock, flags);
3174 mutex_unlock(&wl->mutex);
3175
3176 return 0;
3177 }
3178
3179 /* Locking: wl->mutex */
3180 static void b43_wireless_core_stop(struct b43_wldev *dev)
3181 {
3182 struct b43_wl *wl = dev->wl;
3183 unsigned long flags;
3184
3185 if (b43_status(dev) < B43_STAT_STARTED)
3186 return;
3187
3188 /* Disable and sync interrupts. We must do this before than
3189 * setting the status to INITIALIZED, as the interrupt handler
3190 * won't care about IRQs then. */
3191 spin_lock_irqsave(&wl->irq_lock, flags);
3192 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3193 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3194 spin_unlock_irqrestore(&wl->irq_lock, flags);
3195 b43_synchronize_irq(dev);
3196
3197 b43_set_status(dev, B43_STAT_INITIALIZED);
3198
3199 mutex_unlock(&wl->mutex);
3200 /* Must unlock as it would otherwise deadlock. No races here.
3201 * Cancel the possibly running self-rearming periodic work. */
3202 cancel_delayed_work_sync(&dev->periodic_work);
3203 mutex_lock(&wl->mutex);
3204
3205 ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
3206
3207 b43_mac_suspend(dev);
3208 free_irq(dev->dev->irq, dev);
3209 b43dbg(wl, "Wireless interface stopped\n");
3210 }
3211
3212 /* Locking: wl->mutex */
3213 static int b43_wireless_core_start(struct b43_wldev *dev)
3214 {
3215 int err;
3216
3217 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3218
3219 drain_txstatus_queue(dev);
3220 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3221 IRQF_SHARED, KBUILD_MODNAME, dev);
3222 if (err) {
3223 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3224 goto out;
3225 }
3226
3227 /* We are ready to run. */
3228 b43_set_status(dev, B43_STAT_STARTED);
3229
3230 /* Start data flow (TX/RX). */
3231 b43_mac_enable(dev);
3232 b43_interrupt_enable(dev, dev->irq_savedstate);
3233 ieee80211_start_queues(dev->wl->hw);
3234
3235 /* Start maintainance work */
3236 b43_periodic_tasks_setup(dev);
3237
3238 b43dbg(dev->wl, "Wireless interface started\n");
3239 out:
3240 return err;
3241 }
3242
3243 /* Get PHY and RADIO versioning numbers */
3244 static int b43_phy_versioning(struct b43_wldev *dev)
3245 {
3246 struct b43_phy *phy = &dev->phy;
3247 u32 tmp;
3248 u8 analog_type;
3249 u8 phy_type;
3250 u8 phy_rev;
3251 u16 radio_manuf;
3252 u16 radio_ver;
3253 u16 radio_rev;
3254 int unsupported = 0;
3255
3256 /* Get PHY versioning */
3257 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3258 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3259 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3260 phy_rev = (tmp & B43_PHYVER_VERSION);
3261 switch (phy_type) {
3262 case B43_PHYTYPE_A:
3263 if (phy_rev >= 4)
3264 unsupported = 1;
3265 break;
3266 case B43_PHYTYPE_B:
3267 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3268 && phy_rev != 7)
3269 unsupported = 1;
3270 break;
3271 case B43_PHYTYPE_G:
3272 if (phy_rev > 9)
3273 unsupported = 1;
3274 break;
3275 #ifdef CONFIG_B43_NPHY
3276 case B43_PHYTYPE_N:
3277 if (phy_rev > 1)
3278 unsupported = 1;
3279 break;
3280 #endif
3281 default:
3282 unsupported = 1;
3283 };
3284 if (unsupported) {
3285 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3286 "(Analog %u, Type %u, Revision %u)\n",
3287 analog_type, phy_type, phy_rev);
3288 return -EOPNOTSUPP;
3289 }
3290 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3291 analog_type, phy_type, phy_rev);
3292
3293 /* Get RADIO versioning */
3294 if (dev->dev->bus->chip_id == 0x4317) {
3295 if (dev->dev->bus->chip_rev == 0)
3296 tmp = 0x3205017F;
3297 else if (dev->dev->bus->chip_rev == 1)
3298 tmp = 0x4205017F;
3299 else
3300 tmp = 0x5205017F;
3301 } else {
3302 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3303 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3304 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3305 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3306 }
3307 radio_manuf = (tmp & 0x00000FFF);
3308 radio_ver = (tmp & 0x0FFFF000) >> 12;
3309 radio_rev = (tmp & 0xF0000000) >> 28;
3310 if (radio_manuf != 0x17F /* Broadcom */)
3311 unsupported = 1;
3312 switch (phy_type) {
3313 case B43_PHYTYPE_A:
3314 if (radio_ver != 0x2060)
3315 unsupported = 1;
3316 if (radio_rev != 1)
3317 unsupported = 1;
3318 if (radio_manuf != 0x17F)
3319 unsupported = 1;
3320 break;
3321 case B43_PHYTYPE_B:
3322 if ((radio_ver & 0xFFF0) != 0x2050)
3323 unsupported = 1;
3324 break;
3325 case B43_PHYTYPE_G:
3326 if (radio_ver != 0x2050)
3327 unsupported = 1;
3328 break;
3329 case B43_PHYTYPE_N:
3330 if (radio_ver != 0x2055)
3331 unsupported = 1;
3332 break;
3333 default:
3334 B43_WARN_ON(1);
3335 }
3336 if (unsupported) {
3337 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3338 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3339 radio_manuf, radio_ver, radio_rev);
3340 return -EOPNOTSUPP;
3341 }
3342 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3343 radio_manuf, radio_ver, radio_rev);
3344
3345 phy->radio_manuf = radio_manuf;
3346 phy->radio_ver = radio_ver;
3347 phy->radio_rev = radio_rev;
3348
3349 phy->analog = analog_type;
3350 phy->type = phy_type;
3351 phy->rev = phy_rev;
3352
3353 return 0;
3354 }
3355
3356 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3357 struct b43_phy *phy)
3358 {
3359 struct b43_txpower_lo_control *lo;
3360 int i;
3361
3362 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3363 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3364
3365 phy->aci_enable = 0;
3366 phy->aci_wlan_automatic = 0;
3367 phy->aci_hw_rssi = 0;
3368
3369 phy->radio_off_context.valid = 0;
3370
3371 lo = phy->lo_control;
3372 if (lo) {
3373 memset(lo, 0, sizeof(*(phy->lo_control)));
3374 lo->rebuild = 1;
3375 lo->tx_bias = 0xFF;
3376 }
3377 phy->max_lb_gain = 0;
3378 phy->trsw_rx_gain = 0;
3379 phy->txpwr_offset = 0;
3380
3381 /* NRSSI */
3382 phy->nrssislope = 0;
3383 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3384 phy->nrssi[i] = -1000;
3385 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3386 phy->nrssi_lt[i] = i;
3387
3388 phy->lofcal = 0xFFFF;
3389 phy->initval = 0xFFFF;
3390
3391 phy->interfmode = B43_INTERFMODE_NONE;
3392 phy->channel = 0xFF;
3393
3394 phy->hardware_power_control = !!modparam_hwpctl;
3395
3396 /* PHY TX errors counter. */
3397 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3398
3399 /* OFDM-table address caching. */
3400 phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3401 }
3402
3403 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3404 {
3405 dev->dfq_valid = 0;
3406
3407 /* Assume the radio is enabled. If it's not enabled, the state will
3408 * immediately get fixed on the first periodic work run. */
3409 dev->radio_hw_enable = 1;
3410
3411 /* Stats */
3412 memset(&dev->stats, 0, sizeof(dev->stats));
3413
3414 setup_struct_phy_for_init(dev, &dev->phy);
3415
3416 /* IRQ related flags */
3417 dev->irq_reason = 0;
3418 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3419 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3420
3421 dev->mac_suspended = 1;
3422
3423 /* Noise calculation context */
3424 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3425 }
3426
3427 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3428 {
3429 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3430 u32 hf;
3431
3432 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3433 return;
3434 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3435 return;
3436
3437 hf = b43_hf_read(dev);
3438 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3439 hf |= B43_HF_BTCOEXALT;
3440 else
3441 hf |= B43_HF_BTCOEX;
3442 b43_hf_write(dev, hf);
3443 //TODO
3444 }
3445
3446 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3447 { //TODO
3448 }
3449
3450 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3451 {
3452 #ifdef CONFIG_SSB_DRIVER_PCICORE
3453 struct ssb_bus *bus = dev->dev->bus;
3454 u32 tmp;
3455
3456 if (bus->pcicore.dev &&
3457 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3458 bus->pcicore.dev->id.revision <= 5) {
3459 /* IMCFGLO timeouts workaround. */
3460 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3461 tmp &= ~SSB_IMCFGLO_REQTO;
3462 tmp &= ~SSB_IMCFGLO_SERTO;
3463 switch (bus->bustype) {
3464 case SSB_BUSTYPE_PCI:
3465 case SSB_BUSTYPE_PCMCIA:
3466 tmp |= 0x32;
3467 break;
3468 case SSB_BUSTYPE_SSB:
3469 tmp |= 0x53;
3470 break;
3471 }
3472 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3473 }
3474 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3475 }
3476
3477 /* Write the short and long frame retry limit values. */
3478 static void b43_set_retry_limits(struct b43_wldev *dev,
3479 unsigned int short_retry,
3480 unsigned int long_retry)
3481 {
3482 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3483 * the chip-internal counter. */
3484 short_retry = min(short_retry, (unsigned int)0xF);
3485 long_retry = min(long_retry, (unsigned int)0xF);
3486
3487 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3488 short_retry);
3489 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3490 long_retry);
3491 }
3492
3493 /* Shutdown a wireless core */
3494 /* Locking: wl->mutex */
3495 static void b43_wireless_core_exit(struct b43_wldev *dev)
3496 {
3497 struct b43_phy *phy = &dev->phy;
3498 u32 macctl;
3499
3500 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3501 if (b43_status(dev) != B43_STAT_INITIALIZED)
3502 return;
3503 b43_set_status(dev, B43_STAT_UNINIT);
3504
3505 /* Stop the microcode PSM. */
3506 macctl = b43_read32(dev, B43_MMIO_MACCTL);
3507 macctl &= ~B43_MACCTL_PSM_RUN;
3508 macctl |= B43_MACCTL_PSM_JMP0;
3509 b43_write32(dev, B43_MMIO_MACCTL, macctl);
3510
3511 if (!dev->suspend_in_progress) {
3512 b43_leds_exit(dev);
3513 b43_rng_exit(dev->wl, false);
3514 }
3515 b43_dma_free(dev);
3516 b43_chip_exit(dev);
3517 b43_radio_turn_off(dev, 1);
3518 b43_switch_analog(dev, 0);
3519 if (phy->dyn_tssi_tbl)
3520 kfree(phy->tssi2dbm);
3521 kfree(phy->lo_control);
3522 phy->lo_control = NULL;
3523 if (dev->wl->current_beacon) {
3524 dev_kfree_skb_any(dev->wl->current_beacon);
3525 dev->wl->current_beacon = NULL;
3526 }
3527
3528 ssb_device_disable(dev->dev, 0);
3529 ssb_bus_may_powerdown(dev->dev->bus);
3530 }
3531
3532 /* Initialize a wireless core */
3533 static int b43_wireless_core_init(struct b43_wldev *dev)
3534 {
3535 struct b43_wl *wl = dev->wl;
3536 struct ssb_bus *bus = dev->dev->bus;
3537 struct ssb_sprom *sprom = &bus->sprom;
3538 struct b43_phy *phy = &dev->phy;
3539 int err;
3540 u32 hf, tmp;
3541
3542 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3543
3544 err = ssb_bus_powerup(bus, 0);
3545 if (err)
3546 goto out;
3547 if (!ssb_device_is_enabled(dev->dev)) {
3548 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3549 b43_wireless_core_reset(dev, tmp);
3550 }
3551
3552 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3553 phy->lo_control =
3554 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3555 if (!phy->lo_control) {
3556 err = -ENOMEM;
3557 goto err_busdown;
3558 }
3559 }
3560 setup_struct_wldev_for_init(dev);
3561
3562 err = b43_phy_init_tssi2dbm_table(dev);
3563 if (err)
3564 goto err_kfree_lo_control;
3565
3566 /* Enable IRQ routing to this device. */
3567 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3568
3569 b43_imcfglo_timeouts_workaround(dev);
3570 b43_bluetooth_coext_disable(dev);
3571 b43_phy_early_init(dev);
3572 err = b43_chip_init(dev);
3573 if (err)
3574 goto err_kfree_tssitbl;
3575 b43_shm_write16(dev, B43_SHM_SHARED,
3576 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3577 hf = b43_hf_read(dev);
3578 if (phy->type == B43_PHYTYPE_G) {
3579 hf |= B43_HF_SYMW;
3580 if (phy->rev == 1)
3581 hf |= B43_HF_GDCW;
3582 if (sprom->boardflags_lo & B43_BFL_PACTRL)
3583 hf |= B43_HF_OFDMPABOOST;
3584 } else if (phy->type == B43_PHYTYPE_B) {
3585 hf |= B43_HF_SYMW;
3586 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3587 hf &= ~B43_HF_GDCW;
3588 }
3589 b43_hf_write(dev, hf);
3590
3591 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
3592 B43_DEFAULT_LONG_RETRY_LIMIT);
3593 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3594 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3595
3596 /* Disable sending probe responses from firmware.
3597 * Setting the MaxTime to one usec will always trigger
3598 * a timeout, so we never send any probe resp.
3599 * A timeout of zero is infinite. */
3600 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3601
3602 b43_rate_memory_init(dev);
3603
3604 /* Minimum Contention Window */
3605 if (phy->type == B43_PHYTYPE_B) {
3606 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3607 } else {
3608 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3609 }
3610 /* Maximum Contention Window */
3611 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3612
3613 err = b43_dma_init(dev);
3614 if (err)
3615 goto err_chip_exit;
3616 b43_qos_init(dev);
3617
3618 //FIXME
3619 #if 1
3620 b43_write16(dev, 0x0612, 0x0050);
3621 b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
3622 b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
3623 #endif
3624
3625 b43_bluetooth_coext_enable(dev);
3626
3627 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3628 b43_upload_card_macaddress(dev);
3629 b43_security_init(dev);
3630 if (!dev->suspend_in_progress)
3631 b43_rng_init(wl);
3632
3633 b43_set_status(dev, B43_STAT_INITIALIZED);
3634
3635 if (!dev->suspend_in_progress)
3636 b43_leds_init(dev);
3637 out:
3638 return err;
3639
3640 err_chip_exit:
3641 b43_chip_exit(dev);
3642 err_kfree_tssitbl:
3643 if (phy->dyn_tssi_tbl)
3644 kfree(phy->tssi2dbm);
3645 err_kfree_lo_control:
3646 kfree(phy->lo_control);
3647 phy->lo_control = NULL;
3648 err_busdown:
3649 ssb_bus_may_powerdown(bus);
3650 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3651 return err;
3652 }
3653
3654 static int b43_op_add_interface(struct ieee80211_hw *hw,
3655 struct ieee80211_if_init_conf *conf)
3656 {
3657 struct b43_wl *wl = hw_to_b43_wl(hw);
3658 struct b43_wldev *dev;
3659 unsigned long flags;
3660 int err = -EOPNOTSUPP;
3661
3662 /* TODO: allow WDS/AP devices to coexist */
3663
3664 if (conf->type != IEEE80211_IF_TYPE_AP &&
3665 conf->type != IEEE80211_IF_TYPE_STA &&
3666 conf->type != IEEE80211_IF_TYPE_WDS &&
3667 conf->type != IEEE80211_IF_TYPE_IBSS)
3668 return -EOPNOTSUPP;
3669
3670 mutex_lock(&wl->mutex);
3671 if (wl->operating)
3672 goto out_mutex_unlock;
3673
3674 b43dbg(wl, "Adding Interface type %d\n", conf->type);
3675
3676 dev = wl->current_dev;
3677 wl->operating = 1;
3678 wl->vif = conf->vif;
3679 wl->if_type = conf->type;
3680 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3681
3682 spin_lock_irqsave(&wl->irq_lock, flags);
3683 b43_adjust_opmode(dev);
3684 b43_upload_card_macaddress(dev);
3685 spin_unlock_irqrestore(&wl->irq_lock, flags);
3686
3687 err = 0;
3688 out_mutex_unlock:
3689 mutex_unlock(&wl->mutex);
3690
3691 return err;
3692 }
3693
3694 static void b43_op_remove_interface(struct ieee80211_hw *hw,
3695 struct ieee80211_if_init_conf *conf)
3696 {
3697 struct b43_wl *wl = hw_to_b43_wl(hw);
3698 struct b43_wldev *dev = wl->current_dev;
3699 unsigned long flags;
3700
3701 b43dbg(wl, "Removing Interface type %d\n", conf->type);
3702
3703 mutex_lock(&wl->mutex);
3704
3705 B43_WARN_ON(!wl->operating);
3706 B43_WARN_ON(wl->vif != conf->vif);
3707 wl->vif = NULL;
3708
3709 wl->operating = 0;
3710
3711 spin_lock_irqsave(&wl->irq_lock, flags);
3712 b43_adjust_opmode(dev);
3713 memset(wl->mac_addr, 0, ETH_ALEN);
3714 b43_upload_card_macaddress(dev);
3715 spin_unlock_irqrestore(&wl->irq_lock, flags);
3716
3717 mutex_unlock(&wl->mutex);
3718 }
3719
3720 static int b43_op_start(struct ieee80211_hw *hw)
3721 {
3722 struct b43_wl *wl = hw_to_b43_wl(hw);
3723 struct b43_wldev *dev = wl->current_dev;
3724 int did_init = 0;
3725 int err = 0;
3726 bool do_rfkill_exit = 0;
3727
3728 /* Kill all old instance specific information to make sure
3729 * the card won't use it in the short timeframe between start
3730 * and mac80211 reconfiguring it. */
3731 memset(wl->bssid, 0, ETH_ALEN);
3732 memset(wl->mac_addr, 0, ETH_ALEN);
3733 wl->filter_flags = 0;
3734 wl->radiotap_enabled = 0;
3735
3736 /* First register RFkill.
3737 * LEDs that are registered later depend on it. */
3738 b43_rfkill_init(dev);
3739
3740 mutex_lock(&wl->mutex);
3741
3742 if (b43_status(dev) < B43_STAT_INITIALIZED) {
3743 err = b43_wireless_core_init(dev);
3744 if (err) {
3745 do_rfkill_exit = 1;
3746 goto out_mutex_unlock;
3747 }
3748 did_init = 1;
3749 }
3750
3751 if (b43_status(dev) < B43_STAT_STARTED) {
3752 err = b43_wireless_core_start(dev);
3753 if (err) {
3754 if (did_init)
3755 b43_wireless_core_exit(dev);
3756 do_rfkill_exit = 1;
3757 goto out_mutex_unlock;
3758 }
3759 }
3760
3761 out_mutex_unlock:
3762 mutex_unlock(&wl->mutex);
3763
3764 if (do_rfkill_exit)
3765 b43_rfkill_exit(dev);
3766
3767 return err;
3768 }
3769
3770 static void b43_op_stop(struct ieee80211_hw *hw)
3771 {
3772 struct b43_wl *wl = hw_to_b43_wl(hw);
3773 struct b43_wldev *dev = wl->current_dev;
3774
3775 b43_rfkill_exit(dev);
3776
3777 mutex_lock(&wl->mutex);
3778 if (b43_status(dev) >= B43_STAT_STARTED)
3779 b43_wireless_core_stop(dev);
3780 b43_wireless_core_exit(dev);
3781 mutex_unlock(&wl->mutex);
3782 }
3783
3784 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
3785 u32 short_retry_limit, u32 long_retry_limit)
3786 {
3787 struct b43_wl *wl = hw_to_b43_wl(hw);
3788 struct b43_wldev *dev;
3789 int err = 0;
3790
3791 mutex_lock(&wl->mutex);
3792 dev = wl->current_dev;
3793 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
3794 err = -ENODEV;
3795 goto out_unlock;
3796 }
3797 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
3798 out_unlock:
3799 mutex_unlock(&wl->mutex);
3800
3801 return err;
3802 }
3803
3804 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set)
3805 {
3806 struct b43_wl *wl = hw_to_b43_wl(hw);
3807 struct sk_buff *beacon;
3808 unsigned long flags;
3809
3810 /* We could modify the existing beacon and set the aid bit in
3811 * the TIM field, but that would probably require resizing and
3812 * moving of data within the beacon template.
3813 * Simply request a new beacon and let mac80211 do the hard work. */
3814 beacon = ieee80211_beacon_get(hw, wl->vif, NULL);
3815 if (unlikely(!beacon))
3816 return -ENOMEM;
3817 spin_lock_irqsave(&wl->irq_lock, flags);
3818 b43_update_templates(wl, beacon);
3819 spin_unlock_irqrestore(&wl->irq_lock, flags);
3820
3821 return 0;
3822 }
3823
3824 static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw,
3825 struct sk_buff *beacon,
3826 struct ieee80211_tx_control *ctl)
3827 {
3828 struct b43_wl *wl = hw_to_b43_wl(hw);
3829 unsigned long flags;
3830
3831 spin_lock_irqsave(&wl->irq_lock, flags);
3832 b43_update_templates(wl, beacon);
3833 spin_unlock_irqrestore(&wl->irq_lock, flags);
3834
3835 return 0;
3836 }
3837
3838 static const struct ieee80211_ops b43_hw_ops = {
3839 .tx = b43_op_tx,
3840 .conf_tx = b43_op_conf_tx,
3841 .add_interface = b43_op_add_interface,
3842 .remove_interface = b43_op_remove_interface,
3843 .config = b43_op_config,
3844 .config_interface = b43_op_config_interface,
3845 .configure_filter = b43_op_configure_filter,
3846 .set_key = b43_op_set_key,
3847 .get_stats = b43_op_get_stats,
3848 .get_tx_stats = b43_op_get_tx_stats,
3849 .start = b43_op_start,
3850 .stop = b43_op_stop,
3851 .set_retry_limit = b43_op_set_retry_limit,
3852 .set_tim = b43_op_beacon_set_tim,
3853 .beacon_update = b43_op_ibss_beacon_update,
3854 };
3855
3856 /* Hard-reset the chip. Do not call this directly.
3857 * Use b43_controller_restart()
3858 */
3859 static void b43_chip_reset(struct work_struct *work)
3860 {
3861 struct b43_wldev *dev =
3862 container_of(work, struct b43_wldev, restart_work);
3863 struct b43_wl *wl = dev->wl;
3864 int err = 0;
3865 int prev_status;
3866
3867 mutex_lock(&wl->mutex);
3868
3869 prev_status = b43_status(dev);
3870 /* Bring the device down... */
3871 if (prev_status >= B43_STAT_STARTED)
3872 b43_wireless_core_stop(dev);
3873 if (prev_status >= B43_STAT_INITIALIZED)
3874 b43_wireless_core_exit(dev);
3875
3876 /* ...and up again. */
3877 if (prev_status >= B43_STAT_INITIALIZED) {
3878 err = b43_wireless_core_init(dev);
3879 if (err)
3880 goto out;
3881 }
3882 if (prev_status >= B43_STAT_STARTED) {
3883 err = b43_wireless_core_start(dev);
3884 if (err) {
3885 b43_wireless_core_exit(dev);
3886 goto out;
3887 }
3888 }
3889 out:
3890 mutex_unlock(&wl->mutex);
3891 if (err)
3892 b43err(wl, "Controller restart FAILED\n");
3893 else
3894 b43info(wl, "Controller restarted\n");
3895 }
3896
3897 static int b43_setup_bands(struct b43_wldev *dev,
3898 bool have_2ghz_phy, bool have_5ghz_phy)
3899 {
3900 struct ieee80211_hw *hw = dev->wl->hw;
3901
3902 if (have_2ghz_phy)
3903 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
3904 if (dev->phy.type == B43_PHYTYPE_N) {
3905 if (have_5ghz_phy)
3906 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
3907 } else {
3908 if (have_5ghz_phy)
3909 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
3910 }
3911
3912 dev->phy.supports_2ghz = have_2ghz_phy;
3913 dev->phy.supports_5ghz = have_5ghz_phy;
3914
3915 return 0;
3916 }
3917
3918 static void b43_wireless_core_detach(struct b43_wldev *dev)
3919 {
3920 /* We release firmware that late to not be required to re-request
3921 * is all the time when we reinit the core. */
3922 b43_release_firmware(dev);
3923 }
3924
3925 static int b43_wireless_core_attach(struct b43_wldev *dev)
3926 {
3927 struct b43_wl *wl = dev->wl;
3928 struct ssb_bus *bus = dev->dev->bus;
3929 struct pci_dev *pdev = bus->host_pci;
3930 int err;
3931 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
3932 u32 tmp;
3933
3934 /* Do NOT do any device initialization here.
3935 * Do it in wireless_core_init() instead.
3936 * This function is for gathering basic information about the HW, only.
3937 * Also some structs may be set up here. But most likely you want to have
3938 * that in core_init(), too.
3939 */
3940
3941 err = ssb_bus_powerup(bus, 0);
3942 if (err) {
3943 b43err(wl, "Bus powerup failed\n");
3944 goto out;
3945 }
3946 /* Get the PHY type. */
3947 if (dev->dev->id.revision >= 5) {
3948 u32 tmshigh;
3949
3950 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3951 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
3952 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
3953 } else
3954 B43_WARN_ON(1);
3955
3956 dev->phy.gmode = have_2ghz_phy;
3957 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3958 b43_wireless_core_reset(dev, tmp);
3959
3960 err = b43_phy_versioning(dev);
3961 if (err)
3962 goto err_powerdown;
3963 /* Check if this device supports multiband. */
3964 if (!pdev ||
3965 (pdev->device != 0x4312 &&
3966 pdev->device != 0x4319 && pdev->device != 0x4324)) {
3967 /* No multiband support. */
3968 have_2ghz_phy = 0;
3969 have_5ghz_phy = 0;
3970 switch (dev->phy.type) {
3971 case B43_PHYTYPE_A:
3972 have_5ghz_phy = 1;
3973 break;
3974 case B43_PHYTYPE_G:
3975 case B43_PHYTYPE_N:
3976 have_2ghz_phy = 1;
3977 break;
3978 default:
3979 B43_WARN_ON(1);
3980 }
3981 }
3982 if (dev->phy.type == B43_PHYTYPE_A) {
3983 /* FIXME */
3984 b43err(wl, "IEEE 802.11a devices are unsupported\n");
3985 err = -EOPNOTSUPP;
3986 goto err_powerdown;
3987 }
3988 dev->phy.gmode = have_2ghz_phy;
3989 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3990 b43_wireless_core_reset(dev, tmp);
3991
3992 err = b43_validate_chipaccess(dev);
3993 if (err)
3994 goto err_powerdown;
3995 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
3996 if (err)
3997 goto err_powerdown;
3998
3999 /* Now set some default "current_dev" */
4000 if (!wl->current_dev)
4001 wl->current_dev = dev;
4002 INIT_WORK(&dev->restart_work, b43_chip_reset);
4003
4004 b43_radio_turn_off(dev, 1);
4005 b43_switch_analog(dev, 0);
4006 ssb_device_disable(dev->dev, 0);
4007 ssb_bus_may_powerdown(bus);
4008
4009 out:
4010 return err;
4011
4012 err_powerdown:
4013 ssb_bus_may_powerdown(bus);
4014 return err;
4015 }
4016
4017 static void b43_one_core_detach(struct ssb_device *dev)
4018 {
4019 struct b43_wldev *wldev;
4020 struct b43_wl *wl;
4021
4022 wldev = ssb_get_drvdata(dev);
4023 wl = wldev->wl;
4024 cancel_work_sync(&wldev->restart_work);
4025 b43_debugfs_remove_device(wldev);
4026 b43_wireless_core_detach(wldev);
4027 list_del(&wldev->list);
4028 wl->nr_devs--;
4029 ssb_set_drvdata(dev, NULL);
4030 kfree(wldev);
4031 }
4032
4033 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4034 {
4035 struct b43_wldev *wldev;
4036 struct pci_dev *pdev;
4037 int err = -ENOMEM;
4038
4039 if (!list_empty(&wl->devlist)) {
4040 /* We are not the first core on this chip. */
4041 pdev = dev->bus->host_pci;
4042 /* Only special chips support more than one wireless
4043 * core, although some of the other chips have more than
4044 * one wireless core as well. Check for this and
4045 * bail out early.
4046 */
4047 if (!pdev ||
4048 ((pdev->device != 0x4321) &&
4049 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4050 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4051 return -ENODEV;
4052 }
4053 }
4054
4055 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4056 if (!wldev)
4057 goto out;
4058
4059 wldev->dev = dev;
4060 wldev->wl = wl;
4061 b43_set_status(wldev, B43_STAT_UNINIT);
4062 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4063 tasklet_init(&wldev->isr_tasklet,
4064 (void (*)(unsigned long))b43_interrupt_tasklet,
4065 (unsigned long)wldev);
4066 INIT_LIST_HEAD(&wldev->list);
4067
4068 err = b43_wireless_core_attach(wldev);
4069 if (err)
4070 goto err_kfree_wldev;
4071
4072 list_add(&wldev->list, &wl->devlist);
4073 wl->nr_devs++;
4074 ssb_set_drvdata(dev, wldev);
4075 b43_debugfs_add_device(wldev);
4076
4077 out:
4078 return err;
4079
4080 err_kfree_wldev:
4081 kfree(wldev);
4082 return err;
4083 }
4084
4085 static void b43_sprom_fixup(struct ssb_bus *bus)
4086 {
4087 /* boardflags workarounds */
4088 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4089 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4090 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4091 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4092 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4093 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4094 }
4095
4096 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4097 {
4098 struct ieee80211_hw *hw = wl->hw;
4099
4100 ssb_set_devtypedata(dev, NULL);
4101 ieee80211_free_hw(hw);
4102 }
4103
4104 static int b43_wireless_init(struct ssb_device *dev)
4105 {
4106 struct ssb_sprom *sprom = &dev->bus->sprom;
4107 struct ieee80211_hw *hw;
4108 struct b43_wl *wl;
4109 int err = -ENOMEM;
4110
4111 b43_sprom_fixup(dev->bus);
4112
4113 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4114 if (!hw) {
4115 b43err(NULL, "Could not allocate ieee80211 device\n");
4116 goto out;
4117 }
4118
4119 /* fill hw info */
4120 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
4121 IEEE80211_HW_RX_INCLUDES_FCS;
4122 hw->max_signal = 100;
4123 hw->max_rssi = -110;
4124 hw->max_noise = -110;
4125 hw->queues = 1; /* FIXME: hardware has more queues */
4126 SET_IEEE80211_DEV(hw, dev->dev);
4127 if (is_valid_ether_addr(sprom->et1mac))
4128 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4129 else
4130 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4131
4132 /* Get and initialize struct b43_wl */
4133 wl = hw_to_b43_wl(hw);
4134 memset(wl, 0, sizeof(*wl));
4135 wl->hw = hw;
4136 spin_lock_init(&wl->irq_lock);
4137 spin_lock_init(&wl->leds_lock);
4138 spin_lock_init(&wl->shm_lock);
4139 mutex_init(&wl->mutex);
4140 INIT_LIST_HEAD(&wl->devlist);
4141
4142 ssb_set_devtypedata(dev, wl);
4143 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4144 err = 0;
4145 out:
4146 return err;
4147 }
4148
4149 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4150 {
4151 struct b43_wl *wl;
4152 int err;
4153 int first = 0;
4154
4155 wl = ssb_get_devtypedata(dev);
4156 if (!wl) {
4157 /* Probing the first core. Must setup common struct b43_wl */
4158 first = 1;
4159 err = b43_wireless_init(dev);
4160 if (err)
4161 goto out;
4162 wl = ssb_get_devtypedata(dev);
4163 B43_WARN_ON(!wl);
4164 }
4165 err = b43_one_core_attach(dev, wl);
4166 if (err)
4167 goto err_wireless_exit;
4168
4169 if (first) {
4170 err = ieee80211_register_hw(wl->hw);
4171 if (err)
4172 goto err_one_core_detach;
4173 }
4174
4175 out:
4176 return err;
4177
4178 err_one_core_detach:
4179 b43_one_core_detach(dev);
4180 err_wireless_exit:
4181 if (first)
4182 b43_wireless_exit(dev, wl);
4183 return err;
4184 }
4185
4186 static void b43_remove(struct ssb_device *dev)
4187 {
4188 struct b43_wl *wl = ssb_get_devtypedata(dev);
4189 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4190
4191 B43_WARN_ON(!wl);
4192 if (wl->current_dev == wldev)
4193 ieee80211_unregister_hw(wl->hw);
4194
4195 b43_one_core_detach(dev);
4196
4197 if (list_empty(&wl->devlist)) {
4198 /* Last core on the chip unregistered.
4199 * We can destroy common struct b43_wl.
4200 */
4201 b43_wireless_exit(dev, wl);
4202 }
4203 }
4204
4205 /* Perform a hardware reset. This can be called from any context. */
4206 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4207 {
4208 /* Must avoid requeueing, if we are in shutdown. */
4209 if (b43_status(dev) < B43_STAT_INITIALIZED)
4210 return;
4211 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4212 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4213 }
4214
4215 #ifdef CONFIG_PM
4216
4217 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4218 {
4219 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4220 struct b43_wl *wl = wldev->wl;
4221
4222 b43dbg(wl, "Suspending...\n");
4223
4224 mutex_lock(&wl->mutex);
4225 wldev->suspend_in_progress = true;
4226 wldev->suspend_init_status = b43_status(wldev);
4227 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4228 b43_wireless_core_stop(wldev);
4229 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4230 b43_wireless_core_exit(wldev);
4231 mutex_unlock(&wl->mutex);
4232
4233 b43dbg(wl, "Device suspended.\n");
4234
4235 return 0;
4236 }
4237
4238 static int b43_resume(struct ssb_device *dev)
4239 {
4240 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4241 struct b43_wl *wl = wldev->wl;
4242 int err = 0;
4243
4244 b43dbg(wl, "Resuming...\n");
4245
4246 mutex_lock(&wl->mutex);
4247 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4248 err = b43_wireless_core_init(wldev);
4249 if (err) {
4250 b43err(wl, "Resume failed at core init\n");
4251 goto out;
4252 }
4253 }
4254 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4255 err = b43_wireless_core_start(wldev);
4256 if (err) {
4257 b43_leds_exit(wldev);
4258 b43_rng_exit(wldev->wl, true);
4259 b43_wireless_core_exit(wldev);
4260 b43err(wl, "Resume failed at core start\n");
4261 goto out;
4262 }
4263 }
4264 b43dbg(wl, "Device resumed.\n");
4265 out:
4266 wldev->suspend_in_progress = false;
4267 mutex_unlock(&wl->mutex);
4268 return err;
4269 }
4270
4271 #else /* CONFIG_PM */
4272 # define b43_suspend NULL
4273 # define b43_resume NULL
4274 #endif /* CONFIG_PM */
4275
4276 static struct ssb_driver b43_ssb_driver = {
4277 .name = KBUILD_MODNAME,
4278 .id_table = b43_ssb_tbl,
4279 .probe = b43_probe,
4280 .remove = b43_remove,
4281 .suspend = b43_suspend,
4282 .resume = b43_resume,
4283 };
4284
4285 static void b43_print_driverinfo(void)
4286 {
4287 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4288 *feat_leds = "", *feat_rfkill = "";
4289
4290 #ifdef CONFIG_B43_PCI_AUTOSELECT
4291 feat_pci = "P";
4292 #endif
4293 #ifdef CONFIG_B43_PCMCIA
4294 feat_pcmcia = "M";
4295 #endif
4296 #ifdef CONFIG_B43_NPHY
4297 feat_nphy = "N";
4298 #endif
4299 #ifdef CONFIG_B43_LEDS
4300 feat_leds = "L";
4301 #endif
4302 #ifdef CONFIG_B43_RFKILL
4303 feat_rfkill = "R";
4304 #endif
4305 printk(KERN_INFO "Broadcom 43xx driver loaded "
4306 "[ Features: %s%s%s%s%s, Firmware-ID: "
4307 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4308 feat_pci, feat_pcmcia, feat_nphy,
4309 feat_leds, feat_rfkill);
4310 }
4311
4312 static int __init b43_init(void)
4313 {
4314 int err;
4315
4316 b43_debugfs_init();
4317 err = b43_pcmcia_init();
4318 if (err)
4319 goto err_dfs_exit;
4320 err = ssb_driver_register(&b43_ssb_driver);
4321 if (err)
4322 goto err_pcmcia_exit;
4323 b43_print_driverinfo();
4324
4325 return err;
4326
4327 err_pcmcia_exit:
4328 b43_pcmcia_exit();
4329 err_dfs_exit:
4330 b43_debugfs_exit();
4331 return err;
4332 }
4333
4334 static void __exit b43_exit(void)
4335 {
4336 ssb_driver_unregister(&b43_ssb_driver);
4337 b43_pcmcia_exit();
4338 b43_debugfs_exit();
4339 }
4340
4341 module_init(b43_init)
4342 module_exit(b43_exit)
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree