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[openwrt.git] / package / b43 / src / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005, 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 "nphy.h"
50 #include "dma.h"
51 #include "pio.h"
52 #include "sysfs.h"
53 #include "xmit.h"
54 #include "lo.h"
55 #include "pcmcia.h"
56
57 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
58 MODULE_AUTHOR("Martin Langer");
59 MODULE_AUTHOR("Stefano Brivio");
60 MODULE_AUTHOR("Michael Buesch");
61 MODULE_LICENSE("GPL");
62
63 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
64
65
66 static int modparam_bad_frames_preempt;
67 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
68 MODULE_PARM_DESC(bad_frames_preempt,
69 "enable(1) / disable(0) Bad Frames Preemption");
70
71 static char modparam_fwpostfix[16];
72 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
73 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
74
75 static int modparam_hwpctl;
76 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
77 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
78
79 static int modparam_nohwcrypt;
80 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
81 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
82
83 int b43_modparam_qos = 1;
84 module_param_named(qos, b43_modparam_qos, int, 0444);
85 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
86
87 static int modparam_btcoex = 1;
88 module_param_named(btcoex, modparam_btcoex, int, 0444);
89 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistance (default on)");
90
91
92 static const struct ssb_device_id b43_ssb_tbl[] = {
93 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
94 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
95 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
96 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
97 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
98 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
99 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
100 SSB_DEVTABLE_END
101 };
102
103 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
104
105 /* Channel and ratetables are shared for all devices.
106 * They can't be const, because ieee80211 puts some precalculated
107 * data in there. This data is the same for all devices, so we don't
108 * get concurrency issues */
109 #define RATETAB_ENT(_rateid, _flags) \
110 { \
111 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
112 .hw_value = (_rateid), \
113 .flags = (_flags), \
114 }
115
116 /*
117 * NOTE: When changing this, sync with xmit.c's
118 * b43_plcp_get_bitrate_idx_* functions!
119 */
120 static struct ieee80211_rate __b43_ratetable[] = {
121 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
122 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
123 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
124 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
125 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
126 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
127 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
128 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
129 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
130 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
131 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
132 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
133 };
134
135 #define b43_a_ratetable (__b43_ratetable + 4)
136 #define b43_a_ratetable_size 8
137 #define b43_b_ratetable (__b43_ratetable + 0)
138 #define b43_b_ratetable_size 4
139 #define b43_g_ratetable (__b43_ratetable + 0)
140 #define b43_g_ratetable_size 12
141
142 #define CHAN4G(_channel, _freq, _flags) { \
143 .band = IEEE80211_BAND_2GHZ, \
144 .center_freq = (_freq), \
145 .hw_value = (_channel), \
146 .flags = (_flags), \
147 .max_antenna_gain = 0, \
148 .max_power = 30, \
149 }
150 static struct ieee80211_channel b43_2ghz_chantable[] = {
151 CHAN4G(1, 2412, 0),
152 CHAN4G(2, 2417, 0),
153 CHAN4G(3, 2422, 0),
154 CHAN4G(4, 2427, 0),
155 CHAN4G(5, 2432, 0),
156 CHAN4G(6, 2437, 0),
157 CHAN4G(7, 2442, 0),
158 CHAN4G(8, 2447, 0),
159 CHAN4G(9, 2452, 0),
160 CHAN4G(10, 2457, 0),
161 CHAN4G(11, 2462, 0),
162 CHAN4G(12, 2467, 0),
163 CHAN4G(13, 2472, 0),
164 CHAN4G(14, 2484, 0),
165 };
166 #undef CHAN4G
167
168 #define CHAN5G(_channel, _flags) { \
169 .band = IEEE80211_BAND_5GHZ, \
170 .center_freq = 5000 + (5 * (_channel)), \
171 .hw_value = (_channel), \
172 .flags = (_flags), \
173 .max_antenna_gain = 0, \
174 .max_power = 30, \
175 }
176 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
177 CHAN5G(32, 0), CHAN5G(34, 0),
178 CHAN5G(36, 0), CHAN5G(38, 0),
179 CHAN5G(40, 0), CHAN5G(42, 0),
180 CHAN5G(44, 0), CHAN5G(46, 0),
181 CHAN5G(48, 0), CHAN5G(50, 0),
182 CHAN5G(52, 0), CHAN5G(54, 0),
183 CHAN5G(56, 0), CHAN5G(58, 0),
184 CHAN5G(60, 0), CHAN5G(62, 0),
185 CHAN5G(64, 0), CHAN5G(66, 0),
186 CHAN5G(68, 0), CHAN5G(70, 0),
187 CHAN5G(72, 0), CHAN5G(74, 0),
188 CHAN5G(76, 0), CHAN5G(78, 0),
189 CHAN5G(80, 0), CHAN5G(82, 0),
190 CHAN5G(84, 0), CHAN5G(86, 0),
191 CHAN5G(88, 0), CHAN5G(90, 0),
192 CHAN5G(92, 0), CHAN5G(94, 0),
193 CHAN5G(96, 0), CHAN5G(98, 0),
194 CHAN5G(100, 0), CHAN5G(102, 0),
195 CHAN5G(104, 0), CHAN5G(106, 0),
196 CHAN5G(108, 0), CHAN5G(110, 0),
197 CHAN5G(112, 0), CHAN5G(114, 0),
198 CHAN5G(116, 0), CHAN5G(118, 0),
199 CHAN5G(120, 0), CHAN5G(122, 0),
200 CHAN5G(124, 0), CHAN5G(126, 0),
201 CHAN5G(128, 0), CHAN5G(130, 0),
202 CHAN5G(132, 0), CHAN5G(134, 0),
203 CHAN5G(136, 0), CHAN5G(138, 0),
204 CHAN5G(140, 0), CHAN5G(142, 0),
205 CHAN5G(144, 0), CHAN5G(145, 0),
206 CHAN5G(146, 0), CHAN5G(147, 0),
207 CHAN5G(148, 0), CHAN5G(149, 0),
208 CHAN5G(150, 0), CHAN5G(151, 0),
209 CHAN5G(152, 0), CHAN5G(153, 0),
210 CHAN5G(154, 0), CHAN5G(155, 0),
211 CHAN5G(156, 0), CHAN5G(157, 0),
212 CHAN5G(158, 0), CHAN5G(159, 0),
213 CHAN5G(160, 0), CHAN5G(161, 0),
214 CHAN5G(162, 0), CHAN5G(163, 0),
215 CHAN5G(164, 0), CHAN5G(165, 0),
216 CHAN5G(166, 0), CHAN5G(168, 0),
217 CHAN5G(170, 0), CHAN5G(172, 0),
218 CHAN5G(174, 0), CHAN5G(176, 0),
219 CHAN5G(178, 0), CHAN5G(180, 0),
220 CHAN5G(182, 0), CHAN5G(184, 0),
221 CHAN5G(186, 0), CHAN5G(188, 0),
222 CHAN5G(190, 0), CHAN5G(192, 0),
223 CHAN5G(194, 0), CHAN5G(196, 0),
224 CHAN5G(198, 0), CHAN5G(200, 0),
225 CHAN5G(202, 0), CHAN5G(204, 0),
226 CHAN5G(206, 0), CHAN5G(208, 0),
227 CHAN5G(210, 0), CHAN5G(212, 0),
228 CHAN5G(214, 0), CHAN5G(216, 0),
229 CHAN5G(218, 0), CHAN5G(220, 0),
230 CHAN5G(222, 0), CHAN5G(224, 0),
231 CHAN5G(226, 0), CHAN5G(228, 0),
232 };
233
234 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
235 CHAN5G(34, 0), CHAN5G(36, 0),
236 CHAN5G(38, 0), CHAN5G(40, 0),
237 CHAN5G(42, 0), CHAN5G(44, 0),
238 CHAN5G(46, 0), CHAN5G(48, 0),
239 CHAN5G(52, 0), CHAN5G(56, 0),
240 CHAN5G(60, 0), CHAN5G(64, 0),
241 CHAN5G(100, 0), CHAN5G(104, 0),
242 CHAN5G(108, 0), CHAN5G(112, 0),
243 CHAN5G(116, 0), CHAN5G(120, 0),
244 CHAN5G(124, 0), CHAN5G(128, 0),
245 CHAN5G(132, 0), CHAN5G(136, 0),
246 CHAN5G(140, 0), CHAN5G(149, 0),
247 CHAN5G(153, 0), CHAN5G(157, 0),
248 CHAN5G(161, 0), CHAN5G(165, 0),
249 CHAN5G(184, 0), CHAN5G(188, 0),
250 CHAN5G(192, 0), CHAN5G(196, 0),
251 CHAN5G(200, 0), CHAN5G(204, 0),
252 CHAN5G(208, 0), CHAN5G(212, 0),
253 CHAN5G(216, 0),
254 };
255 #undef CHAN5G
256
257 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
258 .band = IEEE80211_BAND_5GHZ,
259 .channels = b43_5ghz_nphy_chantable,
260 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
261 .bitrates = b43_a_ratetable,
262 .n_bitrates = b43_a_ratetable_size,
263 };
264
265 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
266 .band = IEEE80211_BAND_5GHZ,
267 .channels = b43_5ghz_aphy_chantable,
268 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
269 .bitrates = b43_a_ratetable,
270 .n_bitrates = b43_a_ratetable_size,
271 };
272
273 static struct ieee80211_supported_band b43_band_2GHz = {
274 .band = IEEE80211_BAND_2GHZ,
275 .channels = b43_2ghz_chantable,
276 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
277 .bitrates = b43_g_ratetable,
278 .n_bitrates = b43_g_ratetable_size,
279 };
280
281 static void b43_wireless_core_exit(struct b43_wldev *dev);
282 static int b43_wireless_core_init(struct b43_wldev *dev);
283 static void b43_wireless_core_stop(struct b43_wldev *dev);
284 static int b43_wireless_core_start(struct b43_wldev *dev);
285
286 static int b43_ratelimit(struct b43_wl *wl)
287 {
288 if (!wl || !wl->current_dev)
289 return 1;
290 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
291 return 1;
292 /* We are up and running.
293 * Ratelimit the messages to avoid DoS over the net. */
294 return net_ratelimit();
295 }
296
297 void b43info(struct b43_wl *wl, const char *fmt, ...)
298 {
299 va_list args;
300
301 if (!b43_ratelimit(wl))
302 return;
303 va_start(args, fmt);
304 printk(KERN_INFO "b43-%s: ",
305 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
306 vprintk(fmt, args);
307 va_end(args);
308 }
309
310 void b43err(struct b43_wl *wl, const char *fmt, ...)
311 {
312 va_list args;
313
314 if (!b43_ratelimit(wl))
315 return;
316 va_start(args, fmt);
317 printk(KERN_ERR "b43-%s ERROR: ",
318 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
319 vprintk(fmt, args);
320 va_end(args);
321 }
322
323 void b43warn(struct b43_wl *wl, const char *fmt, ...)
324 {
325 va_list args;
326
327 if (!b43_ratelimit(wl))
328 return;
329 va_start(args, fmt);
330 printk(KERN_WARNING "b43-%s warning: ",
331 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
332 vprintk(fmt, args);
333 va_end(args);
334 }
335
336 #if B43_DEBUG
337 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
338 {
339 va_list args;
340
341 va_start(args, fmt);
342 printk(KERN_DEBUG "b43-%s debug: ",
343 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
344 vprintk(fmt, args);
345 va_end(args);
346 }
347 #endif /* DEBUG */
348
349 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
350 {
351 u32 macctl;
352
353 B43_WARN_ON(offset % 4 != 0);
354
355 macctl = b43_read32(dev, B43_MMIO_MACCTL);
356 if (macctl & B43_MACCTL_BE)
357 val = swab32(val);
358
359 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
360 mmiowb();
361 b43_write32(dev, B43_MMIO_RAM_DATA, val);
362 }
363
364 static inline void b43_shm_control_word(struct b43_wldev *dev,
365 u16 routing, u16 offset)
366 {
367 u32 control;
368
369 /* "offset" is the WORD offset. */
370 control = routing;
371 control <<= 16;
372 control |= offset;
373 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
374 }
375
376 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
377 {
378 struct b43_wl *wl = dev->wl;
379 unsigned long flags;
380 u32 ret;
381
382 spin_lock_irqsave(&wl->shm_lock, flags);
383 if (routing == B43_SHM_SHARED) {
384 B43_WARN_ON(offset & 0x0001);
385 if (offset & 0x0003) {
386 /* Unaligned access */
387 b43_shm_control_word(dev, routing, offset >> 2);
388 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
389 ret <<= 16;
390 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
391 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
392
393 goto out;
394 }
395 offset >>= 2;
396 }
397 b43_shm_control_word(dev, routing, offset);
398 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
399 out:
400 spin_unlock_irqrestore(&wl->shm_lock, flags);
401
402 return ret;
403 }
404
405 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
406 {
407 struct b43_wl *wl = dev->wl;
408 unsigned long flags;
409 u16 ret;
410
411 spin_lock_irqsave(&wl->shm_lock, flags);
412 if (routing == B43_SHM_SHARED) {
413 B43_WARN_ON(offset & 0x0001);
414 if (offset & 0x0003) {
415 /* Unaligned access */
416 b43_shm_control_word(dev, routing, offset >> 2);
417 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
418
419 goto out;
420 }
421 offset >>= 2;
422 }
423 b43_shm_control_word(dev, routing, offset);
424 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
425 out:
426 spin_unlock_irqrestore(&wl->shm_lock, flags);
427
428 return ret;
429 }
430
431 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
432 {
433 struct b43_wl *wl = dev->wl;
434 unsigned long flags;
435
436 spin_lock_irqsave(&wl->shm_lock, flags);
437 if (routing == B43_SHM_SHARED) {
438 B43_WARN_ON(offset & 0x0001);
439 if (offset & 0x0003) {
440 /* Unaligned access */
441 b43_shm_control_word(dev, routing, offset >> 2);
442 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
443 (value >> 16) & 0xffff);
444 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
445 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
446 goto out;
447 }
448 offset >>= 2;
449 }
450 b43_shm_control_word(dev, routing, offset);
451 b43_write32(dev, B43_MMIO_SHM_DATA, value);
452 out:
453 spin_unlock_irqrestore(&wl->shm_lock, flags);
454 }
455
456 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
457 {
458 struct b43_wl *wl = dev->wl;
459 unsigned long flags;
460
461 spin_lock_irqsave(&wl->shm_lock, flags);
462 if (routing == B43_SHM_SHARED) {
463 B43_WARN_ON(offset & 0x0001);
464 if (offset & 0x0003) {
465 /* Unaligned access */
466 b43_shm_control_word(dev, routing, offset >> 2);
467 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
468 goto out;
469 }
470 offset >>= 2;
471 }
472 b43_shm_control_word(dev, routing, offset);
473 b43_write16(dev, B43_MMIO_SHM_DATA, value);
474 out:
475 spin_unlock_irqrestore(&wl->shm_lock, flags);
476 }
477
478 /* Read HostFlags */
479 u64 b43_hf_read(struct b43_wldev * dev)
480 {
481 u64 ret;
482
483 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
484 ret <<= 16;
485 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
486 ret <<= 16;
487 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
488
489 return ret;
490 }
491
492 /* Write HostFlags */
493 void b43_hf_write(struct b43_wldev *dev, u64 value)
494 {
495 u16 lo, mi, hi;
496
497 lo = (value & 0x00000000FFFFULL);
498 mi = (value & 0x0000FFFF0000ULL) >> 16;
499 hi = (value & 0xFFFF00000000ULL) >> 32;
500 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
501 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
502 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
503 }
504
505 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
506 {
507 /* We need to be careful. As we read the TSF from multiple
508 * registers, we should take care of register overflows.
509 * In theory, the whole tsf read process should be atomic.
510 * We try to be atomic here, by restaring the read process,
511 * if any of the high registers changed (overflew).
512 */
513 if (dev->dev->id.revision >= 3) {
514 u32 low, high, high2;
515
516 do {
517 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
518 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
519 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
520 } while (unlikely(high != high2));
521
522 *tsf = high;
523 *tsf <<= 32;
524 *tsf |= low;
525 } else {
526 u64 tmp;
527 u16 v0, v1, v2, v3;
528 u16 test1, test2, test3;
529
530 do {
531 v3 = b43_read16(dev, B43_MMIO_TSF_3);
532 v2 = b43_read16(dev, B43_MMIO_TSF_2);
533 v1 = b43_read16(dev, B43_MMIO_TSF_1);
534 v0 = b43_read16(dev, B43_MMIO_TSF_0);
535
536 test3 = b43_read16(dev, B43_MMIO_TSF_3);
537 test2 = b43_read16(dev, B43_MMIO_TSF_2);
538 test1 = b43_read16(dev, B43_MMIO_TSF_1);
539 } while (v3 != test3 || v2 != test2 || v1 != test1);
540
541 *tsf = v3;
542 *tsf <<= 48;
543 tmp = v2;
544 tmp <<= 32;
545 *tsf |= tmp;
546 tmp = v1;
547 tmp <<= 16;
548 *tsf |= tmp;
549 *tsf |= v0;
550 }
551 }
552
553 static void b43_time_lock(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_time_unlock(struct b43_wldev *dev)
565 {
566 u32 macctl;
567
568 macctl = b43_read32(dev, B43_MMIO_MACCTL);
569 macctl &= ~B43_MACCTL_TBTTHOLD;
570 b43_write32(dev, B43_MMIO_MACCTL, macctl);
571 /* Commit the write */
572 b43_read32(dev, B43_MMIO_MACCTL);
573 }
574
575 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
576 {
577 /* Be careful with the in-progress timer.
578 * First zero out the low register, so we have a full
579 * register-overflow duration to complete the operation.
580 */
581 if (dev->dev->id.revision >= 3) {
582 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
583 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
584
585 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
586 mmiowb();
587 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
588 mmiowb();
589 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
590 } else {
591 u16 v0 = (tsf & 0x000000000000FFFFULL);
592 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
593 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
594 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
595
596 b43_write16(dev, B43_MMIO_TSF_0, 0);
597 mmiowb();
598 b43_write16(dev, B43_MMIO_TSF_3, v3);
599 mmiowb();
600 b43_write16(dev, B43_MMIO_TSF_2, v2);
601 mmiowb();
602 b43_write16(dev, B43_MMIO_TSF_1, v1);
603 mmiowb();
604 b43_write16(dev, B43_MMIO_TSF_0, v0);
605 }
606 }
607
608 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
609 {
610 b43_time_lock(dev);
611 b43_tsf_write_locked(dev, tsf);
612 b43_time_unlock(dev);
613 }
614
615 static
616 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
617 {
618 static const u8 zero_addr[ETH_ALEN] = { 0 };
619 u16 data;
620
621 if (!mac)
622 mac = zero_addr;
623
624 offset |= 0x0020;
625 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
626
627 data = mac[0];
628 data |= mac[1] << 8;
629 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
630 data = mac[2];
631 data |= mac[3] << 8;
632 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
633 data = mac[4];
634 data |= mac[5] << 8;
635 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
636 }
637
638 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
639 {
640 const u8 *mac;
641 const u8 *bssid;
642 u8 mac_bssid[ETH_ALEN * 2];
643 int i;
644 u32 tmp;
645
646 bssid = dev->wl->bssid;
647 mac = dev->wl->mac_addr;
648
649 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
650
651 memcpy(mac_bssid, mac, ETH_ALEN);
652 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
653
654 /* Write our MAC address and BSSID to template ram */
655 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
656 tmp = (u32) (mac_bssid[i + 0]);
657 tmp |= (u32) (mac_bssid[i + 1]) << 8;
658 tmp |= (u32) (mac_bssid[i + 2]) << 16;
659 tmp |= (u32) (mac_bssid[i + 3]) << 24;
660 b43_ram_write(dev, 0x20 + i, tmp);
661 }
662 }
663
664 static void b43_upload_card_macaddress(struct b43_wldev *dev)
665 {
666 b43_write_mac_bssid_templates(dev);
667 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
668 }
669
670 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
671 {
672 /* slot_time is in usec. */
673 if (dev->phy.type != B43_PHYTYPE_G)
674 return;
675 b43_write16(dev, 0x684, 510 + slot_time);
676 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
677 }
678
679 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
680 {
681 b43_set_slot_time(dev, 9);
682 dev->short_slot = 1;
683 }
684
685 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
686 {
687 b43_set_slot_time(dev, 20);
688 dev->short_slot = 0;
689 }
690
691 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
692 * Returns the _previously_ enabled IRQ mask.
693 */
694 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
695 {
696 u32 old_mask;
697
698 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
699 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
700
701 return old_mask;
702 }
703
704 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
705 * Returns the _previously_ enabled IRQ mask.
706 */
707 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
708 {
709 u32 old_mask;
710
711 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
712 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
713
714 return old_mask;
715 }
716
717 /* Synchronize IRQ top- and bottom-half.
718 * IRQs must be masked before calling this.
719 * This must not be called with the irq_lock held.
720 */
721 static void b43_synchronize_irq(struct b43_wldev *dev)
722 {
723 synchronize_irq(dev->dev->irq);
724 tasklet_kill(&dev->isr_tasklet);
725 }
726
727 /* DummyTransmission function, as documented on
728 * http://bcm-specs.sipsolutions.net/DummyTransmission
729 */
730 void b43_dummy_transmission(struct b43_wldev *dev)
731 {
732 struct b43_wl *wl = dev->wl;
733 struct b43_phy *phy = &dev->phy;
734 unsigned int i, max_loop;
735 u16 value;
736 u32 buffer[5] = {
737 0x00000000,
738 0x00D40000,
739 0x00000000,
740 0x01000000,
741 0x00000000,
742 };
743
744 switch (phy->type) {
745 case B43_PHYTYPE_A:
746 max_loop = 0x1E;
747 buffer[0] = 0x000201CC;
748 break;
749 case B43_PHYTYPE_B:
750 case B43_PHYTYPE_G:
751 max_loop = 0xFA;
752 buffer[0] = 0x000B846E;
753 break;
754 default:
755 B43_WARN_ON(1);
756 return;
757 }
758
759 spin_lock_irq(&wl->irq_lock);
760 write_lock(&wl->tx_lock);
761
762 for (i = 0; i < 5; i++)
763 b43_ram_write(dev, i * 4, buffer[i]);
764
765 /* Commit writes */
766 b43_read32(dev, B43_MMIO_MACCTL);
767
768 b43_write16(dev, 0x0568, 0x0000);
769 b43_write16(dev, 0x07C0, 0x0000);
770 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
771 b43_write16(dev, 0x050C, value);
772 b43_write16(dev, 0x0508, 0x0000);
773 b43_write16(dev, 0x050A, 0x0000);
774 b43_write16(dev, 0x054C, 0x0000);
775 b43_write16(dev, 0x056A, 0x0014);
776 b43_write16(dev, 0x0568, 0x0826);
777 b43_write16(dev, 0x0500, 0x0000);
778 b43_write16(dev, 0x0502, 0x0030);
779
780 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
781 b43_radio_write16(dev, 0x0051, 0x0017);
782 for (i = 0x00; i < max_loop; i++) {
783 value = b43_read16(dev, 0x050E);
784 if (value & 0x0080)
785 break;
786 udelay(10);
787 }
788 for (i = 0x00; i < 0x0A; i++) {
789 value = b43_read16(dev, 0x050E);
790 if (value & 0x0400)
791 break;
792 udelay(10);
793 }
794 for (i = 0x00; i < 0x0A; i++) {
795 value = b43_read16(dev, 0x0690);
796 if (!(value & 0x0100))
797 break;
798 udelay(10);
799 }
800 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
801 b43_radio_write16(dev, 0x0051, 0x0037);
802
803 write_unlock(&wl->tx_lock);
804 spin_unlock_irq(&wl->irq_lock);
805 }
806
807 static void key_write(struct b43_wldev *dev,
808 u8 index, u8 algorithm, const u8 * key)
809 {
810 unsigned int i;
811 u32 offset;
812 u16 value;
813 u16 kidx;
814
815 /* Key index/algo block */
816 kidx = b43_kidx_to_fw(dev, index);
817 value = ((kidx << 4) | algorithm);
818 b43_shm_write16(dev, B43_SHM_SHARED,
819 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
820
821 /* Write the key to the Key Table Pointer offset */
822 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
823 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
824 value = key[i];
825 value |= (u16) (key[i + 1]) << 8;
826 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
827 }
828 }
829
830 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
831 {
832 u32 addrtmp[2] = { 0, 0, };
833 u8 per_sta_keys_start = 8;
834
835 if (b43_new_kidx_api(dev))
836 per_sta_keys_start = 4;
837
838 B43_WARN_ON(index < per_sta_keys_start);
839 /* We have two default TX keys and possibly two default RX keys.
840 * Physical mac 0 is mapped to physical key 4 or 8, depending
841 * on the firmware version.
842 * So we must adjust the index here.
843 */
844 index -= per_sta_keys_start;
845
846 if (addr) {
847 addrtmp[0] = addr[0];
848 addrtmp[0] |= ((u32) (addr[1]) << 8);
849 addrtmp[0] |= ((u32) (addr[2]) << 16);
850 addrtmp[0] |= ((u32) (addr[3]) << 24);
851 addrtmp[1] = addr[4];
852 addrtmp[1] |= ((u32) (addr[5]) << 8);
853 }
854
855 if (dev->dev->id.revision >= 5) {
856 /* Receive match transmitter address mechanism */
857 b43_shm_write32(dev, B43_SHM_RCMTA,
858 (index * 2) + 0, addrtmp[0]);
859 b43_shm_write16(dev, B43_SHM_RCMTA,
860 (index * 2) + 1, addrtmp[1]);
861 } else {
862 /* RXE (Receive Engine) and
863 * PSM (Programmable State Machine) mechanism
864 */
865 if (index < 8) {
866 /* TODO write to RCM 16, 19, 22 and 25 */
867 } else {
868 b43_shm_write32(dev, B43_SHM_SHARED,
869 B43_SHM_SH_PSM + (index * 6) + 0,
870 addrtmp[0]);
871 b43_shm_write16(dev, B43_SHM_SHARED,
872 B43_SHM_SH_PSM + (index * 6) + 4,
873 addrtmp[1]);
874 }
875 }
876 }
877
878 static void do_key_write(struct b43_wldev *dev,
879 u8 index, u8 algorithm,
880 const u8 * key, size_t key_len, const u8 * mac_addr)
881 {
882 u8 buf[B43_SEC_KEYSIZE] = { 0, };
883 u8 per_sta_keys_start = 8;
884
885 if (b43_new_kidx_api(dev))
886 per_sta_keys_start = 4;
887
888 B43_WARN_ON(index >= dev->max_nr_keys);
889 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
890
891 if (index >= per_sta_keys_start)
892 keymac_write(dev, index, NULL); /* First zero out mac. */
893 if (key)
894 memcpy(buf, key, key_len);
895 key_write(dev, index, algorithm, buf);
896 if (index >= per_sta_keys_start)
897 keymac_write(dev, index, mac_addr);
898
899 dev->key[index].algorithm = algorithm;
900 }
901
902 static int b43_key_write(struct b43_wldev *dev,
903 int index, u8 algorithm,
904 const u8 * key, size_t key_len,
905 const u8 * mac_addr,
906 struct ieee80211_key_conf *keyconf)
907 {
908 int i;
909 int sta_keys_start;
910
911 if (key_len > B43_SEC_KEYSIZE)
912 return -EINVAL;
913 for (i = 0; i < dev->max_nr_keys; i++) {
914 /* Check that we don't already have this key. */
915 B43_WARN_ON(dev->key[i].keyconf == keyconf);
916 }
917 if (index < 0) {
918 /* Either pairwise key or address is 00:00:00:00:00:00
919 * for transmit-only keys. Search the index. */
920 if (b43_new_kidx_api(dev))
921 sta_keys_start = 4;
922 else
923 sta_keys_start = 8;
924 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
925 if (!dev->key[i].keyconf) {
926 /* found empty */
927 index = i;
928 break;
929 }
930 }
931 if (index < 0) {
932 b43err(dev->wl, "Out of hardware key memory\n");
933 return -ENOSPC;
934 }
935 } else
936 B43_WARN_ON(index > 3);
937
938 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
939 if ((index <= 3) && !b43_new_kidx_api(dev)) {
940 /* Default RX key */
941 B43_WARN_ON(mac_addr);
942 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
943 }
944 keyconf->hw_key_idx = index;
945 dev->key[index].keyconf = keyconf;
946
947 return 0;
948 }
949
950 static int b43_key_clear(struct b43_wldev *dev, int index)
951 {
952 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
953 return -EINVAL;
954 do_key_write(dev, index, B43_SEC_ALGO_NONE,
955 NULL, B43_SEC_KEYSIZE, NULL);
956 if ((index <= 3) && !b43_new_kidx_api(dev)) {
957 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
958 NULL, B43_SEC_KEYSIZE, NULL);
959 }
960 dev->key[index].keyconf = NULL;
961
962 return 0;
963 }
964
965 static void b43_clear_keys(struct b43_wldev *dev)
966 {
967 int i;
968
969 for (i = 0; i < dev->max_nr_keys; i++)
970 b43_key_clear(dev, i);
971 }
972
973 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
974 {
975 u32 macctl;
976 u16 ucstat;
977 bool hwps;
978 bool awake;
979 int i;
980
981 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
982 (ps_flags & B43_PS_DISABLED));
983 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
984
985 if (ps_flags & B43_PS_ENABLED) {
986 hwps = 1;
987 } else if (ps_flags & B43_PS_DISABLED) {
988 hwps = 0;
989 } else {
990 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
991 // and thus is not an AP and we are associated, set bit 25
992 }
993 if (ps_flags & B43_PS_AWAKE) {
994 awake = 1;
995 } else if (ps_flags & B43_PS_ASLEEP) {
996 awake = 0;
997 } else {
998 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
999 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1000 // successful, set bit26
1001 }
1002
1003 /* FIXME: For now we force awake-on and hwps-off */
1004 hwps = 0;
1005 awake = 1;
1006
1007 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1008 if (hwps)
1009 macctl |= B43_MACCTL_HWPS;
1010 else
1011 macctl &= ~B43_MACCTL_HWPS;
1012 if (awake)
1013 macctl |= B43_MACCTL_AWAKE;
1014 else
1015 macctl &= ~B43_MACCTL_AWAKE;
1016 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1017 /* Commit write */
1018 b43_read32(dev, B43_MMIO_MACCTL);
1019 if (awake && dev->dev->id.revision >= 5) {
1020 /* Wait for the microcode to wake up. */
1021 for (i = 0; i < 100; i++) {
1022 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1023 B43_SHM_SH_UCODESTAT);
1024 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1025 break;
1026 udelay(10);
1027 }
1028 }
1029 }
1030
1031 /* Turn the Analog ON/OFF */
1032 static void b43_switch_analog(struct b43_wldev *dev, int on)
1033 {
1034 switch (dev->phy.type) {
1035 case B43_PHYTYPE_A:
1036 case B43_PHYTYPE_G:
1037 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
1038 break;
1039 case B43_PHYTYPE_N:
1040 b43_phy_write(dev, B43_NPHY_AFECTL_OVER,
1041 on ? 0 : 0x7FFF);
1042 break;
1043 default:
1044 B43_WARN_ON(1);
1045 }
1046 }
1047
1048 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1049 {
1050 u32 tmslow;
1051 u32 macctl;
1052
1053 flags |= B43_TMSLOW_PHYCLKEN;
1054 flags |= B43_TMSLOW_PHYRESET;
1055 ssb_device_enable(dev->dev, flags);
1056 msleep(2); /* Wait for the PLL to turn on. */
1057
1058 /* Now take the PHY out of Reset again */
1059 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1060 tmslow |= SSB_TMSLOW_FGC;
1061 tmslow &= ~B43_TMSLOW_PHYRESET;
1062 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1063 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1064 msleep(1);
1065 tmslow &= ~SSB_TMSLOW_FGC;
1066 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1067 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1068 msleep(1);
1069
1070 /* Turn Analog ON */
1071 b43_switch_analog(dev, 1);
1072
1073 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1074 macctl &= ~B43_MACCTL_GMODE;
1075 if (flags & B43_TMSLOW_GMODE)
1076 macctl |= B43_MACCTL_GMODE;
1077 macctl |= B43_MACCTL_IHR_ENABLED;
1078 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1079 }
1080
1081 static void handle_irq_transmit_status(struct b43_wldev *dev)
1082 {
1083 u32 v0, v1;
1084 u16 tmp;
1085 struct b43_txstatus stat;
1086
1087 while (1) {
1088 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1089 if (!(v0 & 0x00000001))
1090 break;
1091 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1092
1093 stat.cookie = (v0 >> 16);
1094 stat.seq = (v1 & 0x0000FFFF);
1095 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1096 tmp = (v0 & 0x0000FFFF);
1097 stat.frame_count = ((tmp & 0xF000) >> 12);
1098 stat.rts_count = ((tmp & 0x0F00) >> 8);
1099 stat.supp_reason = ((tmp & 0x001C) >> 2);
1100 stat.pm_indicated = !!(tmp & 0x0080);
1101 stat.intermediate = !!(tmp & 0x0040);
1102 stat.for_ampdu = !!(tmp & 0x0020);
1103 stat.acked = !!(tmp & 0x0002);
1104
1105 b43_handle_txstatus(dev, &stat);
1106 }
1107 }
1108
1109 static void drain_txstatus_queue(struct b43_wldev *dev)
1110 {
1111 u32 dummy;
1112
1113 if (dev->dev->id.revision < 5)
1114 return;
1115 /* Read all entries from the microcode TXstatus FIFO
1116 * and throw them away.
1117 */
1118 while (1) {
1119 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1120 if (!(dummy & 0x00000001))
1121 break;
1122 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1123 }
1124 }
1125
1126 static u32 b43_jssi_read(struct b43_wldev *dev)
1127 {
1128 u32 val = 0;
1129
1130 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1131 val <<= 16;
1132 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1133
1134 return val;
1135 }
1136
1137 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1138 {
1139 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1140 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1141 }
1142
1143 static void b43_generate_noise_sample(struct b43_wldev *dev)
1144 {
1145 b43_jssi_write(dev, 0x7F7F7F7F);
1146 b43_write32(dev, B43_MMIO_MACCMD,
1147 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1148 B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1149 }
1150
1151 static void b43_calculate_link_quality(struct b43_wldev *dev)
1152 {
1153 /* Top half of Link Quality calculation. */
1154
1155 if (dev->noisecalc.calculation_running)
1156 return;
1157 dev->noisecalc.channel_at_start = dev->phy.channel;
1158 dev->noisecalc.calculation_running = 1;
1159 dev->noisecalc.nr_samples = 0;
1160
1161 b43_generate_noise_sample(dev);
1162 }
1163
1164 static void handle_irq_noise(struct b43_wldev *dev)
1165 {
1166 struct b43_phy *phy = &dev->phy;
1167 u16 tmp;
1168 u8 noise[4];
1169 u8 i, j;
1170 s32 average;
1171
1172 /* Bottom half of Link Quality calculation. */
1173
1174 B43_WARN_ON(!dev->noisecalc.calculation_running);
1175 if (dev->noisecalc.channel_at_start != phy->channel)
1176 goto drop_calculation;
1177 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1178 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1179 noise[2] == 0x7F || noise[3] == 0x7F)
1180 goto generate_new;
1181
1182 /* Get the noise samples. */
1183 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1184 i = dev->noisecalc.nr_samples;
1185 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1186 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1187 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1188 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1189 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1190 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1191 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1192 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1193 dev->noisecalc.nr_samples++;
1194 if (dev->noisecalc.nr_samples == 8) {
1195 /* Calculate the Link Quality by the noise samples. */
1196 average = 0;
1197 for (i = 0; i < 8; i++) {
1198 for (j = 0; j < 4; j++)
1199 average += dev->noisecalc.samples[i][j];
1200 }
1201 average /= (8 * 4);
1202 average *= 125;
1203 average += 64;
1204 average /= 128;
1205 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1206 tmp = (tmp / 128) & 0x1F;
1207 if (tmp >= 8)
1208 average += 2;
1209 else
1210 average -= 25;
1211 if (tmp == 8)
1212 average -= 72;
1213 else
1214 average -= 48;
1215
1216 dev->stats.link_noise = average;
1217 drop_calculation:
1218 dev->noisecalc.calculation_running = 0;
1219 return;
1220 }
1221 generate_new:
1222 b43_generate_noise_sample(dev);
1223 }
1224
1225 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1226 {
1227 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1228 ///TODO: PS TBTT
1229 } else {
1230 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1231 b43_power_saving_ctl_bits(dev, 0);
1232 }
1233 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1234 dev->dfq_valid = 1;
1235 }
1236
1237 static void handle_irq_atim_end(struct b43_wldev *dev)
1238 {
1239 if (dev->dfq_valid) {
1240 b43_write32(dev, B43_MMIO_MACCMD,
1241 b43_read32(dev, B43_MMIO_MACCMD)
1242 | B43_MACCMD_DFQ_VALID);
1243 dev->dfq_valid = 0;
1244 }
1245 }
1246
1247 static void handle_irq_pmq(struct b43_wldev *dev)
1248 {
1249 u32 tmp;
1250
1251 //TODO: AP mode.
1252
1253 while (1) {
1254 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1255 if (!(tmp & 0x00000008))
1256 break;
1257 }
1258 /* 16bit write is odd, but correct. */
1259 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1260 }
1261
1262 static void b43_write_template_common(struct b43_wldev *dev,
1263 const u8 * data, u16 size,
1264 u16 ram_offset,
1265 u16 shm_size_offset, u8 rate)
1266 {
1267 u32 i, tmp;
1268 struct b43_plcp_hdr4 plcp;
1269
1270 plcp.data = 0;
1271 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1272 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1273 ram_offset += sizeof(u32);
1274 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1275 * So leave the first two bytes of the next write blank.
1276 */
1277 tmp = (u32) (data[0]) << 16;
1278 tmp |= (u32) (data[1]) << 24;
1279 b43_ram_write(dev, ram_offset, tmp);
1280 ram_offset += sizeof(u32);
1281 for (i = 2; i < size; i += sizeof(u32)) {
1282 tmp = (u32) (data[i + 0]);
1283 if (i + 1 < size)
1284 tmp |= (u32) (data[i + 1]) << 8;
1285 if (i + 2 < size)
1286 tmp |= (u32) (data[i + 2]) << 16;
1287 if (i + 3 < size)
1288 tmp |= (u32) (data[i + 3]) << 24;
1289 b43_ram_write(dev, ram_offset + i - 2, tmp);
1290 }
1291 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1292 size + sizeof(struct b43_plcp_hdr6));
1293 }
1294
1295 /* Check if the use of the antenna that ieee80211 told us to
1296 * use is possible. This will fall back to DEFAULT.
1297 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1298 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1299 u8 antenna_nr)
1300 {
1301 u8 antenna_mask;
1302
1303 if (antenna_nr == 0) {
1304 /* Zero means "use default antenna". That's always OK. */
1305 return 0;
1306 }
1307
1308 /* Get the mask of available antennas. */
1309 if (dev->phy.gmode)
1310 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1311 else
1312 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1313
1314 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1315 /* This antenna is not available. Fall back to default. */
1316 return 0;
1317 }
1318
1319 return antenna_nr;
1320 }
1321
1322 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
1323 {
1324 antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
1325 switch (antenna) {
1326 case 0: /* default/diversity */
1327 return B43_ANTENNA_DEFAULT;
1328 case 1: /* Antenna 0 */
1329 return B43_ANTENNA0;
1330 case 2: /* Antenna 1 */
1331 return B43_ANTENNA1;
1332 case 3: /* Antenna 2 */
1333 return B43_ANTENNA2;
1334 case 4: /* Antenna 3 */
1335 return B43_ANTENNA3;
1336 default:
1337 return B43_ANTENNA_DEFAULT;
1338 }
1339 }
1340
1341 /* Convert a b43 antenna number value to the PHY TX control value. */
1342 static u16 b43_antenna_to_phyctl(int antenna)
1343 {
1344 switch (antenna) {
1345 case B43_ANTENNA0:
1346 return B43_TXH_PHY_ANT0;
1347 case B43_ANTENNA1:
1348 return B43_TXH_PHY_ANT1;
1349 case B43_ANTENNA2:
1350 return B43_TXH_PHY_ANT2;
1351 case B43_ANTENNA3:
1352 return B43_TXH_PHY_ANT3;
1353 case B43_ANTENNA_AUTO:
1354 return B43_TXH_PHY_ANT01AUTO;
1355 }
1356 B43_WARN_ON(1);
1357 return 0;
1358 }
1359
1360 static void b43_write_beacon_template(struct b43_wldev *dev,
1361 u16 ram_offset,
1362 u16 shm_size_offset)
1363 {
1364 unsigned int i, len, variable_len;
1365 const struct ieee80211_mgmt *bcn;
1366 const u8 *ie;
1367 bool tim_found = 0;
1368 unsigned int rate;
1369 u16 ctl;
1370 int antenna;
1371 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1372
1373 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1374 len = min((size_t) dev->wl->current_beacon->len,
1375 0x200 - sizeof(struct b43_plcp_hdr6));
1376 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1377
1378 b43_write_template_common(dev, (const u8 *)bcn,
1379 len, ram_offset, shm_size_offset, rate);
1380
1381 /* Write the PHY TX control parameters. */
1382 antenna = b43_antenna_from_ieee80211(dev, info->antenna_sel_tx);
1383 antenna = b43_antenna_to_phyctl(antenna);
1384 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1385 /* We can't send beacons with short preamble. Would get PHY errors. */
1386 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1387 ctl &= ~B43_TXH_PHY_ANT;
1388 ctl &= ~B43_TXH_PHY_ENC;
1389 ctl |= antenna;
1390 if (b43_is_cck_rate(rate))
1391 ctl |= B43_TXH_PHY_ENC_CCK;
1392 else
1393 ctl |= B43_TXH_PHY_ENC_OFDM;
1394 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1395
1396 /* Find the position of the TIM and the DTIM_period value
1397 * and write them to SHM. */
1398 ie = bcn->u.beacon.variable;
1399 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1400 for (i = 0; i < variable_len - 2; ) {
1401 uint8_t ie_id, ie_len;
1402
1403 ie_id = ie[i];
1404 ie_len = ie[i + 1];
1405 if (ie_id == 5) {
1406 u16 tim_position;
1407 u16 dtim_period;
1408 /* This is the TIM Information Element */
1409
1410 /* Check whether the ie_len is in the beacon data range. */
1411 if (variable_len < ie_len + 2 + i)
1412 break;
1413 /* A valid TIM is at least 4 bytes long. */
1414 if (ie_len < 4)
1415 break;
1416 tim_found = 1;
1417
1418 tim_position = sizeof(struct b43_plcp_hdr6);
1419 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1420 tim_position += i;
1421
1422 dtim_period = ie[i + 3];
1423
1424 b43_shm_write16(dev, B43_SHM_SHARED,
1425 B43_SHM_SH_TIMBPOS, tim_position);
1426 b43_shm_write16(dev, B43_SHM_SHARED,
1427 B43_SHM_SH_DTIMPER, dtim_period);
1428 break;
1429 }
1430 i += ie_len + 2;
1431 }
1432 if (!tim_found) {
1433 b43warn(dev->wl, "Did not find a valid TIM IE in "
1434 "the beacon template packet. AP or IBSS operation "
1435 "may be broken.\n");
1436 } else
1437 b43dbg(dev->wl, "Updated beacon template\n");
1438 }
1439
1440 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1441 u16 shm_offset, u16 size,
1442 struct ieee80211_rate *rate)
1443 {
1444 struct b43_plcp_hdr4 plcp;
1445 u32 tmp;
1446 __le16 dur;
1447
1448 plcp.data = 0;
1449 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1450 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1451 dev->wl->vif, size,
1452 rate);
1453 /* Write PLCP in two parts and timing for packet transfer */
1454 tmp = le32_to_cpu(plcp.data);
1455 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1456 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1457 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1458 }
1459
1460 /* Instead of using custom probe response template, this function
1461 * just patches custom beacon template by:
1462 * 1) Changing packet type
1463 * 2) Patching duration field
1464 * 3) Stripping TIM
1465 */
1466 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1467 u16 *dest_size,
1468 struct ieee80211_rate *rate)
1469 {
1470 const u8 *src_data;
1471 u8 *dest_data;
1472 u16 src_size, elem_size, src_pos, dest_pos;
1473 __le16 dur;
1474 struct ieee80211_hdr *hdr;
1475 size_t ie_start;
1476
1477 src_size = dev->wl->current_beacon->len;
1478 src_data = (const u8 *)dev->wl->current_beacon->data;
1479
1480 /* Get the start offset of the variable IEs in the packet. */
1481 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1482 B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1483
1484 if (B43_WARN_ON(src_size < ie_start))
1485 return NULL;
1486
1487 dest_data = kmalloc(src_size, GFP_ATOMIC);
1488 if (unlikely(!dest_data))
1489 return NULL;
1490
1491 /* Copy the static data and all Information Elements, except the TIM. */
1492 memcpy(dest_data, src_data, ie_start);
1493 src_pos = ie_start;
1494 dest_pos = ie_start;
1495 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1496 elem_size = src_data[src_pos + 1] + 2;
1497 if (src_data[src_pos] == 5) {
1498 /* This is the TIM. */
1499 continue;
1500 }
1501 memcpy(dest_data + dest_pos, src_data + src_pos,
1502 elem_size);
1503 dest_pos += elem_size;
1504 }
1505 *dest_size = dest_pos;
1506 hdr = (struct ieee80211_hdr *)dest_data;
1507
1508 /* Set the frame control. */
1509 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1510 IEEE80211_STYPE_PROBE_RESP);
1511 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1512 dev->wl->vif, *dest_size,
1513 rate);
1514 hdr->duration_id = dur;
1515
1516 return dest_data;
1517 }
1518
1519 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1520 u16 ram_offset,
1521 u16 shm_size_offset,
1522 struct ieee80211_rate *rate)
1523 {
1524 const u8 *probe_resp_data;
1525 u16 size;
1526
1527 size = dev->wl->current_beacon->len;
1528 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1529 if (unlikely(!probe_resp_data))
1530 return;
1531
1532 /* Looks like PLCP headers plus packet timings are stored for
1533 * all possible basic rates
1534 */
1535 b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1536 b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1537 b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1538 b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1539
1540 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1541 b43_write_template_common(dev, probe_resp_data,
1542 size, ram_offset, shm_size_offset,
1543 rate->hw_value);
1544 kfree(probe_resp_data);
1545 }
1546
1547 static void handle_irq_beacon(struct b43_wldev *dev)
1548 {
1549 struct b43_wl *wl = dev->wl;
1550 u32 cmd, beacon0_valid, beacon1_valid;
1551
1552 if (!b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
1553 return;
1554
1555 /* This is the bottom half of the asynchronous beacon update. */
1556
1557 /* Ignore interrupt in the future. */
1558 dev->irq_savedstate &= ~B43_IRQ_BEACON;
1559
1560 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1561 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1562 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1563
1564 /* Schedule interrupt manually, if busy. */
1565 if (beacon0_valid && beacon1_valid) {
1566 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1567 dev->irq_savedstate |= B43_IRQ_BEACON;
1568 return;
1569 }
1570
1571 if (!beacon0_valid) {
1572 if (!wl->beacon0_uploaded) {
1573 b43_write_beacon_template(dev, 0x68, 0x18);
1574 b43_write_probe_resp_template(dev, 0x268, 0x4A,
1575 &__b43_ratetable[3]);
1576 wl->beacon0_uploaded = 1;
1577 }
1578 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1579 cmd |= B43_MACCMD_BEACON0_VALID;
1580 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1581 } else if (!beacon1_valid) {
1582 if (!wl->beacon1_uploaded) {
1583 b43_write_beacon_template(dev, 0x468, 0x1A);
1584 wl->beacon1_uploaded = 1;
1585 }
1586 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1587 cmd |= B43_MACCMD_BEACON1_VALID;
1588 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1589 }
1590 }
1591
1592 static void b43_beacon_update_trigger_work(struct work_struct *work)
1593 {
1594 struct b43_wl *wl = container_of(work, struct b43_wl,
1595 beacon_update_trigger);
1596 struct b43_wldev *dev;
1597
1598 mutex_lock(&wl->mutex);
1599 dev = wl->current_dev;
1600 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1601 spin_lock_irq(&wl->irq_lock);
1602 /* update beacon right away or defer to irq */
1603 dev->irq_savedstate = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1604 handle_irq_beacon(dev);
1605 /* The handler might have updated the IRQ mask. */
1606 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK,
1607 dev->irq_savedstate);
1608 mmiowb();
1609 spin_unlock_irq(&wl->irq_lock);
1610 }
1611 mutex_unlock(&wl->mutex);
1612 }
1613
1614 /* Asynchronously update the packet templates in template RAM.
1615 * Locking: Requires wl->irq_lock to be locked. */
1616 static void b43_update_templates(struct b43_wl *wl, struct sk_buff *beacon)
1617 {
1618 /* This is the top half of the ansynchronous beacon update.
1619 * The bottom half is the beacon IRQ.
1620 * Beacon update must be asynchronous to avoid sending an
1621 * invalid beacon. This can happen for example, if the firmware
1622 * transmits a beacon while we are updating it. */
1623
1624 if (wl->current_beacon)
1625 dev_kfree_skb_any(wl->current_beacon);
1626 wl->current_beacon = beacon;
1627 wl->beacon0_uploaded = 0;
1628 wl->beacon1_uploaded = 0;
1629 queue_work(wl->hw->workqueue, &wl->beacon_update_trigger);
1630 }
1631
1632 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1633 {
1634 u32 tmp;
1635 u16 i, len;
1636
1637 len = min((u16) ssid_len, (u16) 0x100);
1638 for (i = 0; i < len; i += sizeof(u32)) {
1639 tmp = (u32) (ssid[i + 0]);
1640 if (i + 1 < len)
1641 tmp |= (u32) (ssid[i + 1]) << 8;
1642 if (i + 2 < len)
1643 tmp |= (u32) (ssid[i + 2]) << 16;
1644 if (i + 3 < len)
1645 tmp |= (u32) (ssid[i + 3]) << 24;
1646 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1647 }
1648 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1649 }
1650
1651 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1652 {
1653 b43_time_lock(dev);
1654 if (dev->dev->id.revision >= 3) {
1655 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1656 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1657 } else {
1658 b43_write16(dev, 0x606, (beacon_int >> 6));
1659 b43_write16(dev, 0x610, beacon_int);
1660 }
1661 b43_time_unlock(dev);
1662 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1663 }
1664
1665 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1666 {
1667 u16 reason;
1668
1669 /* Read the register that contains the reason code for the panic. */
1670 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1671 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1672
1673 switch (reason) {
1674 default:
1675 b43dbg(dev->wl, "The panic reason is unknown.\n");
1676 /* fallthrough */
1677 case B43_FWPANIC_DIE:
1678 /* Do not restart the controller or firmware.
1679 * The device is nonfunctional from now on.
1680 * Restarting would result in this panic to trigger again,
1681 * so we avoid that recursion. */
1682 break;
1683 case B43_FWPANIC_RESTART:
1684 b43_controller_restart(dev, "Microcode panic");
1685 break;
1686 }
1687 }
1688
1689 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1690 {
1691 unsigned int i, cnt;
1692 u16 reason, marker_id, marker_line;
1693 __le16 *buf;
1694
1695 /* The proprietary firmware doesn't have this IRQ. */
1696 if (!dev->fw.opensource)
1697 return;
1698
1699 /* Read the register that contains the reason code for this IRQ. */
1700 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1701
1702 switch (reason) {
1703 case B43_DEBUGIRQ_PANIC:
1704 b43_handle_firmware_panic(dev);
1705 break;
1706 case B43_DEBUGIRQ_DUMP_SHM:
1707 if (!B43_DEBUG)
1708 break; /* Only with driver debugging enabled. */
1709 buf = kmalloc(4096, GFP_ATOMIC);
1710 if (!buf) {
1711 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1712 goto out;
1713 }
1714 for (i = 0; i < 4096; i += 2) {
1715 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1716 buf[i / 2] = cpu_to_le16(tmp);
1717 }
1718 b43info(dev->wl, "Shared memory dump:\n");
1719 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1720 16, 2, buf, 4096, 1);
1721 kfree(buf);
1722 break;
1723 case B43_DEBUGIRQ_DUMP_REGS:
1724 if (!B43_DEBUG)
1725 break; /* Only with driver debugging enabled. */
1726 b43info(dev->wl, "Microcode register dump:\n");
1727 for (i = 0, cnt = 0; i < 64; i++) {
1728 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1729 if (cnt == 0)
1730 printk(KERN_INFO);
1731 printk("r%02u: 0x%04X ", i, tmp);
1732 cnt++;
1733 if (cnt == 6) {
1734 printk("\n");
1735 cnt = 0;
1736 }
1737 }
1738 printk("\n");
1739 break;
1740 case B43_DEBUGIRQ_MARKER:
1741 if (!B43_DEBUG)
1742 break; /* Only with driver debugging enabled. */
1743 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1744 B43_MARKER_ID_REG);
1745 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1746 B43_MARKER_LINE_REG);
1747 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1748 "at line number %u\n",
1749 marker_id, marker_line);
1750 break;
1751 default:
1752 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1753 reason);
1754 }
1755 out:
1756 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1757 b43_shm_write16(dev, B43_SHM_SCRATCH,
1758 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1759 }
1760
1761 /* Interrupt handler bottom-half */
1762 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1763 {
1764 u32 reason;
1765 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1766 u32 merged_dma_reason = 0;
1767 int i;
1768 unsigned long flags;
1769
1770 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1771
1772 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1773
1774 reason = dev->irq_reason;
1775 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1776 dma_reason[i] = dev->dma_reason[i];
1777 merged_dma_reason |= dma_reason[i];
1778 }
1779
1780 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1781 b43err(dev->wl, "MAC transmission error\n");
1782
1783 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1784 b43err(dev->wl, "PHY transmission error\n");
1785 rmb();
1786 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1787 atomic_set(&dev->phy.txerr_cnt,
1788 B43_PHY_TX_BADNESS_LIMIT);
1789 b43err(dev->wl, "Too many PHY TX errors, "
1790 "restarting the controller\n");
1791 b43_controller_restart(dev, "PHY TX errors");
1792 }
1793 }
1794
1795 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1796 B43_DMAIRQ_NONFATALMASK))) {
1797 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1798 b43err(dev->wl, "Fatal DMA error: "
1799 "0x%08X, 0x%08X, 0x%08X, "
1800 "0x%08X, 0x%08X, 0x%08X\n",
1801 dma_reason[0], dma_reason[1],
1802 dma_reason[2], dma_reason[3],
1803 dma_reason[4], dma_reason[5]);
1804 b43_controller_restart(dev, "DMA error");
1805 mmiowb();
1806 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1807 return;
1808 }
1809 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1810 b43err(dev->wl, "DMA error: "
1811 "0x%08X, 0x%08X, 0x%08X, "
1812 "0x%08X, 0x%08X, 0x%08X\n",
1813 dma_reason[0], dma_reason[1],
1814 dma_reason[2], dma_reason[3],
1815 dma_reason[4], dma_reason[5]);
1816 }
1817 }
1818
1819 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1820 handle_irq_ucode_debug(dev);
1821 if (reason & B43_IRQ_TBTT_INDI)
1822 handle_irq_tbtt_indication(dev);
1823 if (reason & B43_IRQ_ATIM_END)
1824 handle_irq_atim_end(dev);
1825 if (reason & B43_IRQ_BEACON)
1826 handle_irq_beacon(dev);
1827 if (reason & B43_IRQ_PMQ)
1828 handle_irq_pmq(dev);
1829 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1830 ;/* TODO */
1831 if (reason & B43_IRQ_NOISESAMPLE_OK)
1832 handle_irq_noise(dev);
1833
1834 /* Check the DMA reason registers for received data. */
1835 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1836 if (b43_using_pio_transfers(dev))
1837 b43_pio_rx(dev->pio.rx_queue);
1838 else
1839 b43_dma_rx(dev->dma.rx_ring);
1840 }
1841 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1842 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1843 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1844 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1845 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1846
1847 if (reason & B43_IRQ_TX_OK)
1848 handle_irq_transmit_status(dev);
1849
1850 b43_interrupt_enable(dev, dev->irq_savedstate);
1851 mmiowb();
1852 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1853 }
1854
1855 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1856 {
1857 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1858
1859 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1860 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1861 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1862 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1863 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1864 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1865 }
1866
1867 /* Interrupt handler top-half */
1868 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1869 {
1870 irqreturn_t ret = IRQ_NONE;
1871 struct b43_wldev *dev = dev_id;
1872 u32 reason;
1873
1874 if (!dev)
1875 return IRQ_NONE;
1876
1877 spin_lock(&dev->wl->irq_lock);
1878
1879 if (b43_status(dev) < B43_STAT_STARTED)
1880 goto out;
1881 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1882 if (reason == 0xffffffff) /* shared IRQ */
1883 goto out;
1884 ret = IRQ_HANDLED;
1885 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1886 if (!reason)
1887 goto out;
1888
1889 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1890 & 0x0001DC00;
1891 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1892 & 0x0000DC00;
1893 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1894 & 0x0000DC00;
1895 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1896 & 0x0001DC00;
1897 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1898 & 0x0000DC00;
1899 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1900 & 0x0000DC00;
1901
1902 b43_interrupt_ack(dev, reason);
1903 /* disable all IRQs. They are enabled again in the bottom half. */
1904 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1905 /* save the reason code and call our bottom half. */
1906 dev->irq_reason = reason;
1907 tasklet_schedule(&dev->isr_tasklet);
1908 out:
1909 mmiowb();
1910 spin_unlock(&dev->wl->irq_lock);
1911
1912 return ret;
1913 }
1914
1915 static void do_release_fw(struct b43_firmware_file *fw)
1916 {
1917 release_firmware(fw->data);
1918 fw->data = NULL;
1919 fw->filename = NULL;
1920 }
1921
1922 static void b43_release_firmware(struct b43_wldev *dev)
1923 {
1924 do_release_fw(&dev->fw.ucode);
1925 do_release_fw(&dev->fw.pcm);
1926 do_release_fw(&dev->fw.initvals);
1927 do_release_fw(&dev->fw.initvals_band);
1928 }
1929
1930 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1931 {
1932 const char *text;
1933
1934 text = "You must go to "
1935 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1936 "and download the latest firmware (version 4).\n";
1937 if (error)
1938 b43err(wl, text);
1939 else
1940 b43warn(wl, text);
1941 }
1942
1943 static int do_request_fw(struct b43_wldev *dev,
1944 const char *name,
1945 struct b43_firmware_file *fw,
1946 bool silent)
1947 {
1948 char path[sizeof(modparam_fwpostfix) + 32];
1949 const struct firmware *blob;
1950 struct b43_fw_header *hdr;
1951 u32 size;
1952 int err;
1953
1954 if (!name) {
1955 /* Don't fetch anything. Free possibly cached firmware. */
1956 do_release_fw(fw);
1957 return 0;
1958 }
1959 if (fw->filename) {
1960 if (strcmp(fw->filename, name) == 0)
1961 return 0; /* Already have this fw. */
1962 /* Free the cached firmware first. */
1963 do_release_fw(fw);
1964 }
1965
1966 snprintf(path, ARRAY_SIZE(path),
1967 "b43%s/%s.fw",
1968 modparam_fwpostfix, name);
1969 err = request_firmware(&blob, path, dev->dev->dev);
1970 if (err == -ENOENT) {
1971 if (!silent) {
1972 b43err(dev->wl, "Firmware file \"%s\" not found\n",
1973 path);
1974 }
1975 return err;
1976 } else if (err) {
1977 b43err(dev->wl, "Firmware file \"%s\" request failed (err=%d)\n",
1978 path, err);
1979 return err;
1980 }
1981 if (blob->size < sizeof(struct b43_fw_header))
1982 goto err_format;
1983 hdr = (struct b43_fw_header *)(blob->data);
1984 switch (hdr->type) {
1985 case B43_FW_TYPE_UCODE:
1986 case B43_FW_TYPE_PCM:
1987 size = be32_to_cpu(hdr->size);
1988 if (size != blob->size - sizeof(struct b43_fw_header))
1989 goto err_format;
1990 /* fallthrough */
1991 case B43_FW_TYPE_IV:
1992 if (hdr->ver != 1)
1993 goto err_format;
1994 break;
1995 default:
1996 goto err_format;
1997 }
1998
1999 fw->data = blob;
2000 fw->filename = name;
2001
2002 return 0;
2003
2004 err_format:
2005 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
2006 release_firmware(blob);
2007
2008 return -EPROTO;
2009 }
2010
2011 static int b43_request_firmware(struct b43_wldev *dev)
2012 {
2013 struct b43_firmware *fw = &dev->fw;
2014 const u8 rev = dev->dev->id.revision;
2015 const char *filename;
2016 u32 tmshigh;
2017 int err;
2018
2019 /* Get microcode */
2020 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2021 if ((rev >= 5) && (rev <= 10))
2022 filename = "ucode5";
2023 else if ((rev >= 11) && (rev <= 12))
2024 filename = "ucode11";
2025 else if (rev >= 13)
2026 filename = "ucode13";
2027 else
2028 goto err_no_ucode;
2029 err = do_request_fw(dev, filename, &fw->ucode, 0);
2030 if (err)
2031 goto err_load;
2032
2033 /* Get PCM code */
2034 if ((rev >= 5) && (rev <= 10))
2035 filename = "pcm5";
2036 else if (rev >= 11)
2037 filename = NULL;
2038 else
2039 goto err_no_pcm;
2040 fw->pcm_request_failed = 0;
2041 err = do_request_fw(dev, filename, &fw->pcm, 1);
2042 if (err == -ENOENT) {
2043 /* We did not find a PCM file? Not fatal, but
2044 * core rev <= 10 must do without hwcrypto then. */
2045 fw->pcm_request_failed = 1;
2046 } else if (err)
2047 goto err_load;
2048
2049 /* Get initvals */
2050 switch (dev->phy.type) {
2051 case B43_PHYTYPE_A:
2052 if ((rev >= 5) && (rev <= 10)) {
2053 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2054 filename = "a0g1initvals5";
2055 else
2056 filename = "a0g0initvals5";
2057 } else
2058 goto err_no_initvals;
2059 break;
2060 case B43_PHYTYPE_G:
2061 if ((rev >= 5) && (rev <= 10))
2062 filename = "b0g0initvals5";
2063 else if (rev >= 13)
2064 filename = "b0g0initvals13";
2065 else
2066 goto err_no_initvals;
2067 break;
2068 case B43_PHYTYPE_N:
2069 if ((rev >= 11) && (rev <= 12))
2070 filename = "n0initvals11";
2071 else
2072 goto err_no_initvals;
2073 break;
2074 default:
2075 goto err_no_initvals;
2076 }
2077 err = do_request_fw(dev, filename, &fw->initvals, 0);
2078 if (err)
2079 goto err_load;
2080
2081 /* Get bandswitch initvals */
2082 switch (dev->phy.type) {
2083 case B43_PHYTYPE_A:
2084 if ((rev >= 5) && (rev <= 10)) {
2085 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2086 filename = "a0g1bsinitvals5";
2087 else
2088 filename = "a0g0bsinitvals5";
2089 } else if (rev >= 11)
2090 filename = NULL;
2091 else
2092 goto err_no_initvals;
2093 break;
2094 case B43_PHYTYPE_G:
2095 if ((rev >= 5) && (rev <= 10))
2096 filename = "b0g0bsinitvals5";
2097 else if (rev >= 11)
2098 filename = NULL;
2099 else
2100 goto err_no_initvals;
2101 break;
2102 case B43_PHYTYPE_N:
2103 if ((rev >= 11) && (rev <= 12))
2104 filename = "n0bsinitvals11";
2105 else
2106 goto err_no_initvals;
2107 break;
2108 default:
2109 goto err_no_initvals;
2110 }
2111 err = do_request_fw(dev, filename, &fw->initvals_band, 0);
2112 if (err)
2113 goto err_load;
2114
2115 return 0;
2116
2117 err_load:
2118 b43_print_fw_helptext(dev->wl, 1);
2119 goto error;
2120
2121 err_no_ucode:
2122 err = -ENODEV;
2123 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
2124 goto error;
2125
2126 err_no_pcm:
2127 err = -ENODEV;
2128 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
2129 goto error;
2130
2131 err_no_initvals:
2132 err = -ENODEV;
2133 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
2134 "core rev %u\n", dev->phy.type, rev);
2135 goto error;
2136
2137 error:
2138 b43_release_firmware(dev);
2139 return err;
2140 }
2141
2142 static int b43_upload_microcode(struct b43_wldev *dev)
2143 {
2144 const size_t hdr_len = sizeof(struct b43_fw_header);
2145 const __be32 *data;
2146 unsigned int i, len;
2147 u16 fwrev, fwpatch, fwdate, fwtime;
2148 u32 tmp, macctl;
2149 int err = 0;
2150
2151 /* Jump the microcode PSM to offset 0 */
2152 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2153 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2154 macctl |= B43_MACCTL_PSM_JMP0;
2155 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2156 /* Zero out all microcode PSM registers and shared memory. */
2157 for (i = 0; i < 64; i++)
2158 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2159 for (i = 0; i < 4096; i += 2)
2160 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2161
2162 /* Upload Microcode. */
2163 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2164 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2165 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2166 for (i = 0; i < len; i++) {
2167 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2168 udelay(10);
2169 }
2170
2171 if (dev->fw.pcm.data) {
2172 /* Upload PCM data. */
2173 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2174 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2175 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2176 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2177 /* No need for autoinc bit in SHM_HW */
2178 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2179 for (i = 0; i < len; i++) {
2180 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2181 udelay(10);
2182 }
2183 }
2184
2185 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2186
2187 /* Start the microcode PSM */
2188 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2189 macctl &= ~B43_MACCTL_PSM_JMP0;
2190 macctl |= B43_MACCTL_PSM_RUN;
2191 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2192
2193 /* Wait for the microcode to load and respond */
2194 i = 0;
2195 while (1) {
2196 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2197 if (tmp == B43_IRQ_MAC_SUSPENDED)
2198 break;
2199 i++;
2200 if (i >= 20) {
2201 b43err(dev->wl, "Microcode not responding\n");
2202 b43_print_fw_helptext(dev->wl, 1);
2203 err = -ENODEV;
2204 goto error;
2205 }
2206 msleep_interruptible(50);
2207 if (signal_pending(current)) {
2208 err = -EINTR;
2209 goto error;
2210 }
2211 }
2212 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2213
2214 /* Get and check the revisions. */
2215 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2216 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2217 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2218 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2219
2220 if (fwrev <= 0x128) {
2221 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2222 "binary drivers older than version 4.x is unsupported. "
2223 "You must upgrade your firmware files.\n");
2224 b43_print_fw_helptext(dev->wl, 1);
2225 err = -EOPNOTSUPP;
2226 goto error;
2227 }
2228 dev->fw.rev = fwrev;
2229 dev->fw.patch = fwpatch;
2230 dev->fw.opensource = (fwdate == 0xFFFF);
2231
2232 if (dev->fw.opensource) {
2233 /* Patchlevel info is encoded in the "time" field. */
2234 dev->fw.patch = fwtime;
2235 b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n",
2236 dev->fw.rev, dev->fw.patch,
2237 dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : "");
2238 } else {
2239 b43info(dev->wl, "Loading firmware version %u.%u "
2240 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2241 fwrev, fwpatch,
2242 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2243 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2244 if (dev->fw.pcm_request_failed) {
2245 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2246 "Hardware accelerated cryptography is disabled.\n");
2247 b43_print_fw_helptext(dev->wl, 0);
2248 }
2249 }
2250
2251 if (b43_is_old_txhdr_format(dev)) {
2252 b43warn(dev->wl, "You are using an old firmware image. "
2253 "Support for old firmware will be removed in July 2008.\n");
2254 b43_print_fw_helptext(dev->wl, 0);
2255 }
2256
2257 return 0;
2258
2259 error:
2260 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2261 macctl &= ~B43_MACCTL_PSM_RUN;
2262 macctl |= B43_MACCTL_PSM_JMP0;
2263 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2264
2265 return err;
2266 }
2267
2268 static int b43_write_initvals(struct b43_wldev *dev,
2269 const struct b43_iv *ivals,
2270 size_t count,
2271 size_t array_size)
2272 {
2273 const struct b43_iv *iv;
2274 u16 offset;
2275 size_t i;
2276 bool bit32;
2277
2278 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2279 iv = ivals;
2280 for (i = 0; i < count; i++) {
2281 if (array_size < sizeof(iv->offset_size))
2282 goto err_format;
2283 array_size -= sizeof(iv->offset_size);
2284 offset = be16_to_cpu(iv->offset_size);
2285 bit32 = !!(offset & B43_IV_32BIT);
2286 offset &= B43_IV_OFFSET_MASK;
2287 if (offset >= 0x1000)
2288 goto err_format;
2289 if (bit32) {
2290 u32 value;
2291
2292 if (array_size < sizeof(iv->data.d32))
2293 goto err_format;
2294 array_size -= sizeof(iv->data.d32);
2295
2296 value = get_unaligned_be32(&iv->data.d32);
2297 b43_write32(dev, offset, value);
2298
2299 iv = (const struct b43_iv *)((const uint8_t *)iv +
2300 sizeof(__be16) +
2301 sizeof(__be32));
2302 } else {
2303 u16 value;
2304
2305 if (array_size < sizeof(iv->data.d16))
2306 goto err_format;
2307 array_size -= sizeof(iv->data.d16);
2308
2309 value = be16_to_cpu(iv->data.d16);
2310 b43_write16(dev, offset, value);
2311
2312 iv = (const struct b43_iv *)((const uint8_t *)iv +
2313 sizeof(__be16) +
2314 sizeof(__be16));
2315 }
2316 }
2317 if (array_size)
2318 goto err_format;
2319
2320 return 0;
2321
2322 err_format:
2323 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2324 b43_print_fw_helptext(dev->wl, 1);
2325
2326 return -EPROTO;
2327 }
2328
2329 static int b43_upload_initvals(struct b43_wldev *dev)
2330 {
2331 const size_t hdr_len = sizeof(struct b43_fw_header);
2332 const struct b43_fw_header *hdr;
2333 struct b43_firmware *fw = &dev->fw;
2334 const struct b43_iv *ivals;
2335 size_t count;
2336 int err;
2337
2338 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2339 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2340 count = be32_to_cpu(hdr->size);
2341 err = b43_write_initvals(dev, ivals, count,
2342 fw->initvals.data->size - hdr_len);
2343 if (err)
2344 goto out;
2345 if (fw->initvals_band.data) {
2346 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2347 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2348 count = be32_to_cpu(hdr->size);
2349 err = b43_write_initvals(dev, ivals, count,
2350 fw->initvals_band.data->size - hdr_len);
2351 if (err)
2352 goto out;
2353 }
2354 out:
2355
2356 return err;
2357 }
2358
2359 /* Initialize the GPIOs
2360 * http://bcm-specs.sipsolutions.net/GPIO
2361 */
2362 static int b43_gpio_init(struct b43_wldev *dev)
2363 {
2364 struct ssb_bus *bus = dev->dev->bus;
2365 struct ssb_device *gpiodev, *pcidev = NULL;
2366 u32 mask, set;
2367
2368 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2369 & ~B43_MACCTL_GPOUTSMSK);
2370
2371 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2372 | 0x000F);
2373
2374 mask = 0x0000001F;
2375 set = 0x0000000F;
2376 if (dev->dev->bus->chip_id == 0x4301) {
2377 mask |= 0x0060;
2378 set |= 0x0060;
2379 }
2380 if (0 /* FIXME: conditional unknown */ ) {
2381 b43_write16(dev, B43_MMIO_GPIO_MASK,
2382 b43_read16(dev, B43_MMIO_GPIO_MASK)
2383 | 0x0100);
2384 mask |= 0x0180;
2385 set |= 0x0180;
2386 }
2387 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2388 b43_write16(dev, B43_MMIO_GPIO_MASK,
2389 b43_read16(dev, B43_MMIO_GPIO_MASK)
2390 | 0x0200);
2391 mask |= 0x0200;
2392 set |= 0x0200;
2393 }
2394 if (dev->dev->id.revision >= 2)
2395 mask |= 0x0010; /* FIXME: This is redundant. */
2396
2397 #ifdef CONFIG_SSB_DRIVER_PCICORE
2398 pcidev = bus->pcicore.dev;
2399 #endif
2400 gpiodev = bus->chipco.dev ? : pcidev;
2401 if (!gpiodev)
2402 return 0;
2403 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2404 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2405 & mask) | set);
2406
2407 return 0;
2408 }
2409
2410 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2411 static void b43_gpio_cleanup(struct b43_wldev *dev)
2412 {
2413 struct ssb_bus *bus = dev->dev->bus;
2414 struct ssb_device *gpiodev, *pcidev = NULL;
2415
2416 #ifdef CONFIG_SSB_DRIVER_PCICORE
2417 pcidev = bus->pcicore.dev;
2418 #endif
2419 gpiodev = bus->chipco.dev ? : pcidev;
2420 if (!gpiodev)
2421 return;
2422 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2423 }
2424
2425 /* http://bcm-specs.sipsolutions.net/EnableMac */
2426 void b43_mac_enable(struct b43_wldev *dev)
2427 {
2428 dev->mac_suspended--;
2429 B43_WARN_ON(dev->mac_suspended < 0);
2430 if (dev->mac_suspended == 0) {
2431 b43_write32(dev, B43_MMIO_MACCTL,
2432 b43_read32(dev, B43_MMIO_MACCTL)
2433 | B43_MACCTL_ENABLED);
2434 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2435 B43_IRQ_MAC_SUSPENDED);
2436 /* Commit writes */
2437 b43_read32(dev, B43_MMIO_MACCTL);
2438 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2439 b43_power_saving_ctl_bits(dev, 0);
2440 }
2441 }
2442
2443 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2444 void b43_mac_suspend(struct b43_wldev *dev)
2445 {
2446 int i;
2447 u32 tmp;
2448
2449 might_sleep();
2450 B43_WARN_ON(dev->mac_suspended < 0);
2451
2452 if (dev->mac_suspended == 0) {
2453 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2454 b43_write32(dev, B43_MMIO_MACCTL,
2455 b43_read32(dev, B43_MMIO_MACCTL)
2456 & ~B43_MACCTL_ENABLED);
2457 /* force pci to flush the write */
2458 b43_read32(dev, B43_MMIO_MACCTL);
2459 for (i = 35; i; i--) {
2460 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2461 if (tmp & B43_IRQ_MAC_SUSPENDED)
2462 goto out;
2463 udelay(10);
2464 }
2465 /* Hm, it seems this will take some time. Use msleep(). */
2466 for (i = 40; i; i--) {
2467 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2468 if (tmp & B43_IRQ_MAC_SUSPENDED)
2469 goto out;
2470 msleep(1);
2471 }
2472 b43err(dev->wl, "MAC suspend failed\n");
2473 }
2474 out:
2475 dev->mac_suspended++;
2476 }
2477
2478 static void b43_adjust_opmode(struct b43_wldev *dev)
2479 {
2480 struct b43_wl *wl = dev->wl;
2481 u32 ctl;
2482 u16 cfp_pretbtt;
2483
2484 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2485 /* Reset status to STA infrastructure mode. */
2486 ctl &= ~B43_MACCTL_AP;
2487 ctl &= ~B43_MACCTL_KEEP_CTL;
2488 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2489 ctl &= ~B43_MACCTL_KEEP_BAD;
2490 ctl &= ~B43_MACCTL_PROMISC;
2491 ctl &= ~B43_MACCTL_BEACPROMISC;
2492 ctl |= B43_MACCTL_INFRA;
2493
2494 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2495 ctl |= B43_MACCTL_AP;
2496 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2497 ctl &= ~B43_MACCTL_INFRA;
2498
2499 if (wl->filter_flags & FIF_CONTROL)
2500 ctl |= B43_MACCTL_KEEP_CTL;
2501 if (wl->filter_flags & FIF_FCSFAIL)
2502 ctl |= B43_MACCTL_KEEP_BAD;
2503 if (wl->filter_flags & FIF_PLCPFAIL)
2504 ctl |= B43_MACCTL_KEEP_BADPLCP;
2505 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2506 ctl |= B43_MACCTL_PROMISC;
2507 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2508 ctl |= B43_MACCTL_BEACPROMISC;
2509
2510 /* Workaround: On old hardware the HW-MAC-address-filter
2511 * doesn't work properly, so always run promisc in filter
2512 * it in software. */
2513 if (dev->dev->id.revision <= 4)
2514 ctl |= B43_MACCTL_PROMISC;
2515
2516 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2517
2518 cfp_pretbtt = 2;
2519 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2520 if (dev->dev->bus->chip_id == 0x4306 &&
2521 dev->dev->bus->chip_rev == 3)
2522 cfp_pretbtt = 100;
2523 else
2524 cfp_pretbtt = 50;
2525 }
2526 b43_write16(dev, 0x612, cfp_pretbtt);
2527 }
2528
2529 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2530 {
2531 u16 offset;
2532
2533 if (is_ofdm) {
2534 offset = 0x480;
2535 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2536 } else {
2537 offset = 0x4C0;
2538 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2539 }
2540 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2541 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2542 }
2543
2544 static void b43_rate_memory_init(struct b43_wldev *dev)
2545 {
2546 switch (dev->phy.type) {
2547 case B43_PHYTYPE_A:
2548 case B43_PHYTYPE_G:
2549 case B43_PHYTYPE_N:
2550 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2551 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2552 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2553 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2554 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2555 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2556 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2557 if (dev->phy.type == B43_PHYTYPE_A)
2558 break;
2559 /* fallthrough */
2560 case B43_PHYTYPE_B:
2561 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2562 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2563 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2564 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2565 break;
2566 default:
2567 B43_WARN_ON(1);
2568 }
2569 }
2570
2571 /* Set the default values for the PHY TX Control Words. */
2572 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2573 {
2574 u16 ctl = 0;
2575
2576 ctl |= B43_TXH_PHY_ENC_CCK;
2577 ctl |= B43_TXH_PHY_ANT01AUTO;
2578 ctl |= B43_TXH_PHY_TXPWR;
2579
2580 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2581 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2582 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2583 }
2584
2585 /* Set the TX-Antenna for management frames sent by firmware. */
2586 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2587 {
2588 u16 ant;
2589 u16 tmp;
2590
2591 ant = b43_antenna_to_phyctl(antenna);
2592
2593 /* For ACK/CTS */
2594 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2595 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2596 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2597 /* For Probe Resposes */
2598 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2599 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2600 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2601 }
2602
2603 /* This is the opposite of b43_chip_init() */
2604 static void b43_chip_exit(struct b43_wldev *dev)
2605 {
2606 b43_radio_turn_off(dev, 1);
2607 b43_gpio_cleanup(dev);
2608 b43_lo_g_cleanup(dev);
2609 /* firmware is released later */
2610 }
2611
2612 /* Initialize the chip
2613 * http://bcm-specs.sipsolutions.net/ChipInit
2614 */
2615 static int b43_chip_init(struct b43_wldev *dev)
2616 {
2617 struct b43_phy *phy = &dev->phy;
2618 int err, tmp;
2619 u32 value32, macctl;
2620 u16 value16;
2621
2622 /* Initialize the MAC control */
2623 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2624 if (dev->phy.gmode)
2625 macctl |= B43_MACCTL_GMODE;
2626 macctl |= B43_MACCTL_INFRA;
2627 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2628
2629 err = b43_request_firmware(dev);
2630 if (err)
2631 goto out;
2632 err = b43_upload_microcode(dev);
2633 if (err)
2634 goto out; /* firmware is released later */
2635
2636 err = b43_gpio_init(dev);
2637 if (err)
2638 goto out; /* firmware is released later */
2639
2640 err = b43_upload_initvals(dev);
2641 if (err)
2642 goto err_gpio_clean;
2643 b43_radio_turn_on(dev);
2644
2645 b43_write16(dev, 0x03E6, 0x0000);
2646 err = b43_phy_init(dev);
2647 if (err)
2648 goto err_radio_off;
2649
2650 /* Select initial Interference Mitigation. */
2651 tmp = phy->interfmode;
2652 phy->interfmode = B43_INTERFMODE_NONE;
2653 b43_radio_set_interference_mitigation(dev, tmp);
2654
2655 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2656 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2657
2658 if (phy->type == B43_PHYTYPE_B) {
2659 value16 = b43_read16(dev, 0x005E);
2660 value16 |= 0x0004;
2661 b43_write16(dev, 0x005E, value16);
2662 }
2663 b43_write32(dev, 0x0100, 0x01000000);
2664 if (dev->dev->id.revision < 5)
2665 b43_write32(dev, 0x010C, 0x01000000);
2666
2667 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2668 & ~B43_MACCTL_INFRA);
2669 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2670 | B43_MACCTL_INFRA);
2671
2672 /* Probe Response Timeout value */
2673 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2674 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2675
2676 /* Initially set the wireless operation mode. */
2677 b43_adjust_opmode(dev);
2678
2679 if (dev->dev->id.revision < 3) {
2680 b43_write16(dev, 0x060E, 0x0000);
2681 b43_write16(dev, 0x0610, 0x8000);
2682 b43_write16(dev, 0x0604, 0x0000);
2683 b43_write16(dev, 0x0606, 0x0200);
2684 } else {
2685 b43_write32(dev, 0x0188, 0x80000000);
2686 b43_write32(dev, 0x018C, 0x02000000);
2687 }
2688 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2689 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2690 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2691 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2692 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2693 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2694 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2695
2696 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2697 value32 |= 0x00100000;
2698 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2699
2700 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2701 dev->dev->bus->chipco.fast_pwrup_delay);
2702
2703 err = 0;
2704 b43dbg(dev->wl, "Chip initialized\n");
2705 out:
2706 return err;
2707
2708 err_radio_off:
2709 b43_radio_turn_off(dev, 1);
2710 err_gpio_clean:
2711 b43_gpio_cleanup(dev);
2712 return err;
2713 }
2714
2715 static void b43_periodic_every60sec(struct b43_wldev *dev)
2716 {
2717 struct b43_phy *phy = &dev->phy;
2718
2719 if (phy->type != B43_PHYTYPE_G)
2720 return;
2721 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2722 b43_mac_suspend(dev);
2723 b43_calc_nrssi_slope(dev);
2724 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2725 u8 old_chan = phy->channel;
2726
2727 /* VCO Calibration */
2728 if (old_chan >= 8)
2729 b43_radio_selectchannel(dev, 1, 0);
2730 else
2731 b43_radio_selectchannel(dev, 13, 0);
2732 b43_radio_selectchannel(dev, old_chan, 0);
2733 }
2734 b43_mac_enable(dev);
2735 }
2736 }
2737
2738 static void b43_periodic_every30sec(struct b43_wldev *dev)
2739 {
2740 /* Update device statistics. */
2741 b43_calculate_link_quality(dev);
2742 }
2743
2744 static void b43_periodic_every15sec(struct b43_wldev *dev)
2745 {
2746 struct b43_phy *phy = &dev->phy;
2747
2748 if (phy->type == B43_PHYTYPE_G) {
2749 //TODO: update_aci_moving_average
2750 if (phy->aci_enable && phy->aci_wlan_automatic) {
2751 b43_mac_suspend(dev);
2752 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2753 if (0 /*TODO: bunch of conditions */ ) {
2754 b43_radio_set_interference_mitigation
2755 (dev, B43_INTERFMODE_MANUALWLAN);
2756 }
2757 } else if (1 /*TODO*/) {
2758 /*
2759 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2760 b43_radio_set_interference_mitigation(dev,
2761 B43_INTERFMODE_NONE);
2762 }
2763 */
2764 }
2765 b43_mac_enable(dev);
2766 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2767 phy->rev == 1) {
2768 //TODO: implement rev1 workaround
2769 }
2770 }
2771 b43_phy_xmitpower(dev); //FIXME: unless scanning?
2772 b43_lo_g_maintanance_work(dev);
2773 //TODO for APHY (temperature?)
2774
2775 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2776 wmb();
2777 }
2778
2779 static void do_periodic_work(struct b43_wldev *dev)
2780 {
2781 unsigned int state;
2782
2783 state = dev->periodic_state;
2784 if (state % 4 == 0)
2785 b43_periodic_every60sec(dev);
2786 if (state % 2 == 0)
2787 b43_periodic_every30sec(dev);
2788 b43_periodic_every15sec(dev);
2789 }
2790
2791 /* Periodic work locking policy:
2792 * The whole periodic work handler is protected by
2793 * wl->mutex. If another lock is needed somewhere in the
2794 * pwork callchain, it's aquired in-place, where it's needed.
2795 */
2796 static void b43_periodic_work_handler(struct work_struct *work)
2797 {
2798 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2799 periodic_work.work);
2800 struct b43_wl *wl = dev->wl;
2801 unsigned long delay;
2802
2803 mutex_lock(&wl->mutex);
2804
2805 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2806 goto out;
2807 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2808 goto out_requeue;
2809
2810 do_periodic_work(dev);
2811
2812 dev->periodic_state++;
2813 out_requeue:
2814 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2815 delay = msecs_to_jiffies(50);
2816 else
2817 delay = round_jiffies_relative(HZ * 15);
2818 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2819 out:
2820 mutex_unlock(&wl->mutex);
2821 }
2822
2823 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2824 {
2825 struct delayed_work *work = &dev->periodic_work;
2826
2827 dev->periodic_state = 0;
2828 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2829 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2830 }
2831
2832 /* Check if communication with the device works correctly. */
2833 static int b43_validate_chipaccess(struct b43_wldev *dev)
2834 {
2835 u32 v, backup;
2836
2837 backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2838
2839 /* Check for read/write and endianness problems. */
2840 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2841 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2842 goto error;
2843 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2844 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2845 goto error;
2846
2847 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2848
2849 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2850 /* The 32bit register shadows the two 16bit registers
2851 * with update sideeffects. Validate this. */
2852 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2853 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2854 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2855 goto error;
2856 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2857 goto error;
2858 }
2859 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2860
2861 v = b43_read32(dev, B43_MMIO_MACCTL);
2862 v |= B43_MACCTL_GMODE;
2863 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2864 goto error;
2865
2866 return 0;
2867 error:
2868 b43err(dev->wl, "Failed to validate the chipaccess\n");
2869 return -ENODEV;
2870 }
2871
2872 static void b43_security_init(struct b43_wldev *dev)
2873 {
2874 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2875 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2876 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2877 /* KTP is a word address, but we address SHM bytewise.
2878 * So multiply by two.
2879 */
2880 dev->ktp *= 2;
2881 if (dev->dev->id.revision >= 5) {
2882 /* Number of RCMTA address slots */
2883 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2884 }
2885 b43_clear_keys(dev);
2886 }
2887
2888 static int b43_rng_read(struct hwrng *rng, u32 * data)
2889 {
2890 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2891 unsigned long flags;
2892
2893 /* Don't take wl->mutex here, as it could deadlock with
2894 * hwrng internal locking. It's not needed to take
2895 * wl->mutex here, anyway. */
2896
2897 spin_lock_irqsave(&wl->irq_lock, flags);
2898 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2899 spin_unlock_irqrestore(&wl->irq_lock, flags);
2900
2901 return (sizeof(u16));
2902 }
2903
2904 static void b43_rng_exit(struct b43_wl *wl)
2905 {
2906 if (wl->rng_initialized)
2907 hwrng_unregister(&wl->rng);
2908 }
2909
2910 static int b43_rng_init(struct b43_wl *wl)
2911 {
2912 int err;
2913
2914 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2915 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2916 wl->rng.name = wl->rng_name;
2917 wl->rng.data_read = b43_rng_read;
2918 wl->rng.priv = (unsigned long)wl;
2919 wl->rng_initialized = 1;
2920 err = hwrng_register(&wl->rng);
2921 if (err) {
2922 wl->rng_initialized = 0;
2923 b43err(wl, "Failed to register the random "
2924 "number generator (%d)\n", err);
2925 }
2926
2927 return err;
2928 }
2929
2930 static int b43_op_tx(struct ieee80211_hw *hw,
2931 struct sk_buff *skb)
2932 {
2933 struct b43_wl *wl = hw_to_b43_wl(hw);
2934 struct b43_wldev *dev = wl->current_dev;
2935 unsigned long flags;
2936 int err;
2937
2938 if (unlikely(skb->len < 2 + 2 + 6)) {
2939 /* Too short, this can't be a valid frame. */
2940 dev_kfree_skb_any(skb);
2941 return NETDEV_TX_OK;
2942 }
2943 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
2944 if (unlikely(!dev))
2945 return NETDEV_TX_BUSY;
2946
2947 /* Transmissions on seperate queues can run concurrently. */
2948 read_lock_irqsave(&wl->tx_lock, flags);
2949
2950 err = -ENODEV;
2951 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2952 if (b43_using_pio_transfers(dev))
2953 err = b43_pio_tx(dev, skb);
2954 else
2955 err = b43_dma_tx(dev, skb);
2956 }
2957
2958 read_unlock_irqrestore(&wl->tx_lock, flags);
2959
2960 if (unlikely(err))
2961 return NETDEV_TX_BUSY;
2962 return NETDEV_TX_OK;
2963 }
2964
2965 /* Locking: wl->irq_lock */
2966 static void b43_qos_params_upload(struct b43_wldev *dev,
2967 const struct ieee80211_tx_queue_params *p,
2968 u16 shm_offset)
2969 {
2970 u16 params[B43_NR_QOSPARAMS];
2971 int cw_min, cw_max, aifs, bslots, tmp;
2972 unsigned int i;
2973
2974 const u16 aCWmin = 0x0001;
2975 const u16 aCWmax = 0x03FF;
2976
2977 /* Calculate the default values for the parameters, if needed. */
2978 switch (shm_offset) {
2979 case B43_QOS_VOICE:
2980 aifs = (p->aifs == -1) ? 2 : p->aifs;
2981 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 4 - 1) : p->cw_min;
2982 cw_max = (p->cw_max == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_max;
2983 break;
2984 case B43_QOS_VIDEO:
2985 aifs = (p->aifs == -1) ? 2 : p->aifs;
2986 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_min;
2987 cw_max = (p->cw_max == 0) ? aCWmin : p->cw_max;
2988 break;
2989 case B43_QOS_BESTEFFORT:
2990 aifs = (p->aifs == -1) ? 3 : p->aifs;
2991 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
2992 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
2993 break;
2994 case B43_QOS_BACKGROUND:
2995 aifs = (p->aifs == -1) ? 7 : p->aifs;
2996 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
2997 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
2998 break;
2999 default:
3000 B43_WARN_ON(1);
3001 return;
3002 }
3003 if (cw_min <= 0)
3004 cw_min = aCWmin;
3005 if (cw_max <= 0)
3006 cw_max = aCWmin;
3007 bslots = b43_read16(dev, B43_MMIO_RNG) % cw_min;
3008
3009 memset(&params, 0, sizeof(params));
3010
3011 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3012 params[B43_QOSPARAM_CWMIN] = cw_min;
3013 params[B43_QOSPARAM_CWMAX] = cw_max;
3014 params[B43_QOSPARAM_CWCUR] = cw_min;
3015 params[B43_QOSPARAM_AIFS] = aifs;
3016 params[B43_QOSPARAM_BSLOTS] = bslots;
3017 params[B43_QOSPARAM_REGGAP] = bslots + aifs;
3018
3019 for (i = 0; i < ARRAY_SIZE(params); i++) {
3020 if (i == B43_QOSPARAM_STATUS) {
3021 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3022 shm_offset + (i * 2));
3023 /* Mark the parameters as updated. */
3024 tmp |= 0x100;
3025 b43_shm_write16(dev, B43_SHM_SHARED,
3026 shm_offset + (i * 2),
3027 tmp);
3028 } else {
3029 b43_shm_write16(dev, B43_SHM_SHARED,
3030 shm_offset + (i * 2),
3031 params[i]);
3032 }
3033 }
3034 }
3035
3036 /* Update the QOS parameters in hardware. */
3037 static void b43_qos_update(struct b43_wldev *dev)
3038 {
3039 struct b43_wl *wl = dev->wl;
3040 struct b43_qos_params *params;
3041 unsigned long flags;
3042 unsigned int i;
3043
3044 /* Mapping of mac80211 queues to b43 SHM offsets. */
3045 static const u16 qos_shm_offsets[] = {
3046 [0] = B43_QOS_VOICE,
3047 [1] = B43_QOS_VIDEO,
3048 [2] = B43_QOS_BESTEFFORT,
3049 [3] = B43_QOS_BACKGROUND,
3050 };
3051 BUILD_BUG_ON(ARRAY_SIZE(qos_shm_offsets) != ARRAY_SIZE(wl->qos_params));
3052
3053 b43_mac_suspend(dev);
3054 spin_lock_irqsave(&wl->irq_lock, flags);
3055
3056 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3057 params = &(wl->qos_params[i]);
3058 if (params->need_hw_update) {
3059 b43_qos_params_upload(dev, &(params->p),
3060 qos_shm_offsets[i]);
3061 params->need_hw_update = 0;
3062 }
3063 }
3064
3065 spin_unlock_irqrestore(&wl->irq_lock, flags);
3066 b43_mac_enable(dev);
3067 }
3068
3069 static void b43_qos_clear(struct b43_wl *wl)
3070 {
3071 struct b43_qos_params *params;
3072 unsigned int i;
3073
3074 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3075 params = &(wl->qos_params[i]);
3076
3077 memset(&(params->p), 0, sizeof(params->p));
3078 params->p.aifs = -1;
3079 params->need_hw_update = 1;
3080 }
3081 }
3082
3083 /* Initialize the core's QOS capabilities */
3084 static void b43_qos_init(struct b43_wldev *dev)
3085 {
3086 struct b43_wl *wl = dev->wl;
3087 unsigned int i;
3088
3089 /* Upload the current QOS parameters. */
3090 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++)
3091 wl->qos_params[i].need_hw_update = 1;
3092 b43_qos_update(dev);
3093
3094 /* Enable QOS support. */
3095 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3096 b43_write16(dev, B43_MMIO_IFSCTL,
3097 b43_read16(dev, B43_MMIO_IFSCTL)
3098 | B43_MMIO_IFSCTL_USE_EDCF);
3099 }
3100
3101 static void b43_qos_update_work(struct work_struct *work)
3102 {
3103 struct b43_wl *wl = container_of(work, struct b43_wl, qos_update_work);
3104 struct b43_wldev *dev;
3105
3106 mutex_lock(&wl->mutex);
3107 dev = wl->current_dev;
3108 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED)))
3109 b43_qos_update(dev);
3110 mutex_unlock(&wl->mutex);
3111 }
3112
3113 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3114 const struct ieee80211_tx_queue_params *params)
3115 {
3116 struct b43_wl *wl = hw_to_b43_wl(hw);
3117 unsigned long flags;
3118 unsigned int queue = (unsigned int)_queue;
3119 struct b43_qos_params *p;
3120
3121 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3122 /* Queue not available or don't support setting
3123 * params on this queue. Return success to not
3124 * confuse mac80211. */
3125 return 0;
3126 }
3127
3128 spin_lock_irqsave(&wl->irq_lock, flags);
3129 p = &(wl->qos_params[queue]);
3130 memcpy(&(p->p), params, sizeof(p->p));
3131 p->need_hw_update = 1;
3132 spin_unlock_irqrestore(&wl->irq_lock, flags);
3133
3134 queue_work(hw->workqueue, &wl->qos_update_work);
3135
3136 return 0;
3137 }
3138
3139 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3140 struct ieee80211_tx_queue_stats *stats)
3141 {
3142 struct b43_wl *wl = hw_to_b43_wl(hw);
3143 struct b43_wldev *dev = wl->current_dev;
3144 unsigned long flags;
3145 int err = -ENODEV;
3146
3147 if (!dev)
3148 goto out;
3149 spin_lock_irqsave(&wl->irq_lock, flags);
3150 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3151 if (b43_using_pio_transfers(dev))
3152 b43_pio_get_tx_stats(dev, stats);
3153 else
3154 b43_dma_get_tx_stats(dev, stats);
3155 err = 0;
3156 }
3157 spin_unlock_irqrestore(&wl->irq_lock, flags);
3158 out:
3159 return err;
3160 }
3161
3162 static int b43_op_get_stats(struct ieee80211_hw *hw,
3163 struct ieee80211_low_level_stats *stats)
3164 {
3165 struct b43_wl *wl = hw_to_b43_wl(hw);
3166 unsigned long flags;
3167
3168 spin_lock_irqsave(&wl->irq_lock, flags);
3169 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3170 spin_unlock_irqrestore(&wl->irq_lock, flags);
3171
3172 return 0;
3173 }
3174
3175 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3176 {
3177 struct ssb_device *sdev = dev->dev;
3178 u32 tmslow;
3179
3180 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3181 tmslow &= ~B43_TMSLOW_GMODE;
3182 tmslow |= B43_TMSLOW_PHYRESET;
3183 tmslow |= SSB_TMSLOW_FGC;
3184 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3185 msleep(1);
3186
3187 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3188 tmslow &= ~SSB_TMSLOW_FGC;
3189 tmslow |= B43_TMSLOW_PHYRESET;
3190 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3191 msleep(1);
3192 }
3193
3194 static const char * band_to_string(enum ieee80211_band band)
3195 {
3196 switch (band) {
3197 case IEEE80211_BAND_5GHZ:
3198 return "5";
3199 case IEEE80211_BAND_2GHZ:
3200 return "2.4";
3201 default:
3202 break;
3203 }
3204 B43_WARN_ON(1);
3205 return "";
3206 }
3207
3208 /* Expects wl->mutex locked */
3209 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3210 {
3211 struct b43_wldev *up_dev = NULL;
3212 struct b43_wldev *down_dev;
3213 struct b43_wldev *d;
3214 int err;
3215 bool gmode;
3216 int prev_status;
3217
3218 /* Find a device and PHY which supports the band. */
3219 list_for_each_entry(d, &wl->devlist, list) {
3220 switch (chan->band) {
3221 case IEEE80211_BAND_5GHZ:
3222 if (d->phy.supports_5ghz) {
3223 up_dev = d;
3224 gmode = 0;
3225 }
3226 break;
3227 case IEEE80211_BAND_2GHZ:
3228 if (d->phy.supports_2ghz) {
3229 up_dev = d;
3230 gmode = 1;
3231 }
3232 break;
3233 default:
3234 B43_WARN_ON(1);
3235 return -EINVAL;
3236 }
3237 if (up_dev)
3238 break;
3239 }
3240 if (!up_dev) {
3241 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3242 band_to_string(chan->band));
3243 return -ENODEV;
3244 }
3245 if ((up_dev == wl->current_dev) &&
3246 (!!wl->current_dev->phy.gmode == !!gmode)) {
3247 /* This device is already running. */
3248 return 0;
3249 }
3250 b43dbg(wl, "Switching to %s-GHz band\n",
3251 band_to_string(chan->band));
3252 down_dev = wl->current_dev;
3253
3254 prev_status = b43_status(down_dev);
3255 /* Shutdown the currently running core. */
3256 if (prev_status >= B43_STAT_STARTED)
3257 b43_wireless_core_stop(down_dev);
3258 if (prev_status >= B43_STAT_INITIALIZED)
3259 b43_wireless_core_exit(down_dev);
3260
3261 if (down_dev != up_dev) {
3262 /* We switch to a different core, so we put PHY into
3263 * RESET on the old core. */
3264 b43_put_phy_into_reset(down_dev);
3265 }
3266
3267 /* Now start the new core. */
3268 up_dev->phy.gmode = gmode;
3269 if (prev_status >= B43_STAT_INITIALIZED) {
3270 err = b43_wireless_core_init(up_dev);
3271 if (err) {
3272 b43err(wl, "Fatal: Could not initialize device for "
3273 "selected %s-GHz band\n",
3274 band_to_string(chan->band));
3275 goto init_failure;
3276 }
3277 }
3278 if (prev_status >= B43_STAT_STARTED) {
3279 err = b43_wireless_core_start(up_dev);
3280 if (err) {
3281 b43err(wl, "Fatal: Coult not start device for "
3282 "selected %s-GHz band\n",
3283 band_to_string(chan->band));
3284 b43_wireless_core_exit(up_dev);
3285 goto init_failure;
3286 }
3287 }
3288 B43_WARN_ON(b43_status(up_dev) != prev_status);
3289
3290 wl->current_dev = up_dev;
3291
3292 return 0;
3293 init_failure:
3294 /* Whoops, failed to init the new core. No core is operating now. */
3295 wl->current_dev = NULL;
3296 return err;
3297 }
3298
3299 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3300 {
3301 struct b43_wl *wl = hw_to_b43_wl(hw);
3302 struct b43_wldev *dev;
3303 struct b43_phy *phy;
3304 unsigned long flags;
3305 int antenna;
3306 int err = 0;
3307 u32 savedirqs;
3308
3309 mutex_lock(&wl->mutex);
3310
3311 /* Switch the band (if necessary). This might change the active core. */
3312 err = b43_switch_band(wl, conf->channel);
3313 if (err)
3314 goto out_unlock_mutex;
3315 dev = wl->current_dev;
3316 phy = &dev->phy;
3317
3318 /* Disable IRQs while reconfiguring the device.
3319 * This makes it possible to drop the spinlock throughout
3320 * the reconfiguration process. */
3321 spin_lock_irqsave(&wl->irq_lock, flags);
3322 if (b43_status(dev) < B43_STAT_STARTED) {
3323 spin_unlock_irqrestore(&wl->irq_lock, flags);
3324 goto out_unlock_mutex;
3325 }
3326 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
3327 spin_unlock_irqrestore(&wl->irq_lock, flags);
3328 b43_synchronize_irq(dev);
3329
3330 /* Switch to the requested channel.
3331 * The firmware takes care of races with the TX handler. */
3332 if (conf->channel->hw_value != phy->channel)
3333 b43_radio_selectchannel(dev, conf->channel->hw_value, 0);
3334
3335 /* Enable/Disable ShortSlot timing. */
3336 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
3337 dev->short_slot) {
3338 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
3339 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
3340 b43_short_slot_timing_enable(dev);
3341 else
3342 b43_short_slot_timing_disable(dev);
3343 }
3344
3345 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3346
3347 /* Adjust the desired TX power level. */
3348 if (conf->power_level != 0) {
3349 if (conf->power_level != phy->power_level) {
3350 phy->power_level = conf->power_level;
3351 b43_phy_xmitpower(dev);
3352 }
3353 }
3354
3355 /* Antennas for RX and management frame TX. */
3356 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
3357 b43_mgmtframe_txantenna(dev, antenna);
3358 antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
3359 b43_set_rx_antenna(dev, antenna);
3360
3361 /* Update templates for AP mode. */
3362 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
3363 b43_set_beacon_int(dev, conf->beacon_int);
3364
3365 if (!!conf->radio_enabled != phy->radio_on) {
3366 if (conf->radio_enabled) {
3367 b43_radio_turn_on(dev);
3368 b43info(dev->wl, "Radio turned on by software\n");
3369 if (!dev->radio_hw_enable) {
3370 b43info(dev->wl, "The hardware RF-kill button "
3371 "still turns the radio physically off. "
3372 "Press the button to turn it on.\n");
3373 }
3374 } else {
3375 b43_radio_turn_off(dev, 0);
3376 b43info(dev->wl, "Radio turned off by software\n");
3377 }
3378 }
3379
3380 spin_lock_irqsave(&wl->irq_lock, flags);
3381 b43_interrupt_enable(dev, savedirqs);
3382 mmiowb();
3383 spin_unlock_irqrestore(&wl->irq_lock, flags);
3384 out_unlock_mutex:
3385 mutex_unlock(&wl->mutex);
3386
3387 return err;
3388 }
3389
3390 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3391 const u8 *local_addr, const u8 *addr,
3392 struct ieee80211_key_conf *key)
3393 {
3394 struct b43_wl *wl = hw_to_b43_wl(hw);
3395 struct b43_wldev *dev;
3396 unsigned long flags;
3397 u8 algorithm;
3398 u8 index;
3399 int err;
3400 DECLARE_MAC_BUF(mac);
3401
3402 if (modparam_nohwcrypt)
3403 return -ENOSPC; /* User disabled HW-crypto */
3404
3405 mutex_lock(&wl->mutex);
3406 spin_lock_irqsave(&wl->irq_lock, flags);
3407
3408 dev = wl->current_dev;
3409 err = -ENODEV;
3410 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3411 goto out_unlock;
3412
3413 if (dev->fw.pcm_request_failed) {
3414 /* We don't have firmware for the crypto engine.
3415 * Must use software-crypto. */
3416 err = -EOPNOTSUPP;
3417 goto out_unlock;
3418 }
3419
3420 err = -EINVAL;
3421 switch (key->alg) {
3422 case ALG_WEP:
3423 if (key->keylen == 5)
3424 algorithm = B43_SEC_ALGO_WEP40;
3425 else
3426 algorithm = B43_SEC_ALGO_WEP104;
3427 break;
3428 case ALG_TKIP:
3429 algorithm = B43_SEC_ALGO_TKIP;
3430 break;
3431 case ALG_CCMP:
3432 algorithm = B43_SEC_ALGO_AES;
3433 break;
3434 default:
3435 B43_WARN_ON(1);
3436 goto out_unlock;
3437 }
3438 index = (u8) (key->keyidx);
3439 if (index > 3)
3440 goto out_unlock;
3441
3442 switch (cmd) {
3443 case SET_KEY:
3444 if (algorithm == B43_SEC_ALGO_TKIP) {
3445 /* FIXME: No TKIP hardware encryption for now. */
3446 err = -EOPNOTSUPP;
3447 goto out_unlock;
3448 }
3449
3450 if (is_broadcast_ether_addr(addr)) {
3451 /* addr is FF:FF:FF:FF:FF:FF for default keys */
3452 err = b43_key_write(dev, index, algorithm,
3453 key->key, key->keylen, NULL, key);
3454 } else {
3455 /*
3456 * either pairwise key or address is 00:00:00:00:00:00
3457 * for transmit-only keys
3458 */
3459 err = b43_key_write(dev, -1, algorithm,
3460 key->key, key->keylen, addr, key);
3461 }
3462 if (err)
3463 goto out_unlock;
3464
3465 if (algorithm == B43_SEC_ALGO_WEP40 ||
3466 algorithm == B43_SEC_ALGO_WEP104) {
3467 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3468 } else {
3469 b43_hf_write(dev,
3470 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3471 }
3472 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3473 break;
3474 case DISABLE_KEY: {
3475 err = b43_key_clear(dev, key->hw_key_idx);
3476 if (err)
3477 goto out_unlock;
3478 break;
3479 }
3480 default:
3481 B43_WARN_ON(1);
3482 }
3483 out_unlock:
3484 spin_unlock_irqrestore(&wl->irq_lock, flags);
3485 mutex_unlock(&wl->mutex);
3486 if (!err) {
3487 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3488 "mac: %s\n",
3489 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3490 print_mac(mac, addr));
3491 }
3492 return err;
3493 }
3494
3495 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3496 unsigned int changed, unsigned int *fflags,
3497 int mc_count, struct dev_addr_list *mc_list)
3498 {
3499 struct b43_wl *wl = hw_to_b43_wl(hw);
3500 struct b43_wldev *dev = wl->current_dev;
3501 unsigned long flags;
3502
3503 if (!dev) {
3504 *fflags = 0;
3505 return;
3506 }
3507
3508 spin_lock_irqsave(&wl->irq_lock, flags);
3509 *fflags &= FIF_PROMISC_IN_BSS |
3510 FIF_ALLMULTI |
3511 FIF_FCSFAIL |
3512 FIF_PLCPFAIL |
3513 FIF_CONTROL |
3514 FIF_OTHER_BSS |
3515 FIF_BCN_PRBRESP_PROMISC;
3516
3517 changed &= FIF_PROMISC_IN_BSS |
3518 FIF_ALLMULTI |
3519 FIF_FCSFAIL |
3520 FIF_PLCPFAIL |
3521 FIF_CONTROL |
3522 FIF_OTHER_BSS |
3523 FIF_BCN_PRBRESP_PROMISC;
3524
3525 wl->filter_flags = *fflags;
3526
3527 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3528 b43_adjust_opmode(dev);
3529 spin_unlock_irqrestore(&wl->irq_lock, flags);
3530 }
3531
3532 static int b43_op_config_interface(struct ieee80211_hw *hw,
3533 struct ieee80211_vif *vif,
3534 struct ieee80211_if_conf *conf)
3535 {
3536 struct b43_wl *wl = hw_to_b43_wl(hw);
3537 struct b43_wldev *dev = wl->current_dev;
3538 unsigned long flags;
3539
3540 if (!dev)
3541 return -ENODEV;
3542 mutex_lock(&wl->mutex);
3543 spin_lock_irqsave(&wl->irq_lock, flags);
3544 B43_WARN_ON(wl->vif != vif);
3545 if (conf->bssid)
3546 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3547 else
3548 memset(wl->bssid, 0, ETH_ALEN);
3549 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3550 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
3551 B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
3552 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3553 if (conf->beacon)
3554 b43_update_templates(wl, conf->beacon);
3555 }
3556 b43_write_mac_bssid_templates(dev);
3557 }
3558 spin_unlock_irqrestore(&wl->irq_lock, flags);
3559 mutex_unlock(&wl->mutex);
3560
3561 return 0;
3562 }
3563
3564 /* Locking: wl->mutex */
3565 static void b43_wireless_core_stop(struct b43_wldev *dev)
3566 {
3567 struct b43_wl *wl = dev->wl;
3568 unsigned long flags;
3569
3570 if (b43_status(dev) < B43_STAT_STARTED)
3571 return;
3572
3573 /* Disable and sync interrupts. We must do this before than
3574 * setting the status to INITIALIZED, as the interrupt handler
3575 * won't care about IRQs then. */
3576 spin_lock_irqsave(&wl->irq_lock, flags);
3577 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3578 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3579 spin_unlock_irqrestore(&wl->irq_lock, flags);
3580 b43_synchronize_irq(dev);
3581
3582 write_lock_irqsave(&wl->tx_lock, flags);
3583 b43_set_status(dev, B43_STAT_INITIALIZED);
3584 write_unlock_irqrestore(&wl->tx_lock, flags);
3585
3586 b43_pio_stop(dev);
3587 mutex_unlock(&wl->mutex);
3588 /* Must unlock as it would otherwise deadlock. No races here.
3589 * Cancel the possibly running self-rearming periodic work. */
3590 cancel_delayed_work_sync(&dev->periodic_work);
3591 mutex_lock(&wl->mutex);
3592
3593 b43_mac_suspend(dev);
3594 free_irq(dev->dev->irq, dev);
3595 b43dbg(wl, "Wireless interface stopped\n");
3596 }
3597
3598 /* Locking: wl->mutex */
3599 static int b43_wireless_core_start(struct b43_wldev *dev)
3600 {
3601 int err;
3602
3603 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3604
3605 drain_txstatus_queue(dev);
3606 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3607 IRQF_SHARED, KBUILD_MODNAME, dev);
3608 if (err) {
3609 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3610 goto out;
3611 }
3612
3613 /* We are ready to run. */
3614 b43_set_status(dev, B43_STAT_STARTED);
3615
3616 /* Start data flow (TX/RX). */
3617 b43_mac_enable(dev);
3618 b43_interrupt_enable(dev, dev->irq_savedstate);
3619
3620 /* Start maintainance work */
3621 b43_periodic_tasks_setup(dev);
3622
3623 b43dbg(dev->wl, "Wireless interface started\n");
3624 out:
3625 return err;
3626 }
3627
3628 /* Get PHY and RADIO versioning numbers */
3629 static int b43_phy_versioning(struct b43_wldev *dev)
3630 {
3631 struct b43_phy *phy = &dev->phy;
3632 u32 tmp;
3633 u8 analog_type;
3634 u8 phy_type;
3635 u8 phy_rev;
3636 u16 radio_manuf;
3637 u16 radio_ver;
3638 u16 radio_rev;
3639 int unsupported = 0;
3640
3641 /* Get PHY versioning */
3642 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3643 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3644 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3645 phy_rev = (tmp & B43_PHYVER_VERSION);
3646 switch (phy_type) {
3647 case B43_PHYTYPE_A:
3648 if (phy_rev >= 4)
3649 unsupported = 1;
3650 break;
3651 case B43_PHYTYPE_B:
3652 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3653 && phy_rev != 7)
3654 unsupported = 1;
3655 break;
3656 case B43_PHYTYPE_G:
3657 if (phy_rev > 9)
3658 unsupported = 1;
3659 break;
3660 #ifdef CONFIG_B43_NPHY
3661 case B43_PHYTYPE_N:
3662 if (phy_rev > 1)
3663 unsupported = 1;
3664 break;
3665 #endif
3666 default:
3667 unsupported = 1;
3668 };
3669 if (unsupported) {
3670 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3671 "(Analog %u, Type %u, Revision %u)\n",
3672 analog_type, phy_type, phy_rev);
3673 return -EOPNOTSUPP;
3674 }
3675 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3676 analog_type, phy_type, phy_rev);
3677
3678 /* Get RADIO versioning */
3679 if (dev->dev->bus->chip_id == 0x4317) {
3680 if (dev->dev->bus->chip_rev == 0)
3681 tmp = 0x3205017F;
3682 else if (dev->dev->bus->chip_rev == 1)
3683 tmp = 0x4205017F;
3684 else
3685 tmp = 0x5205017F;
3686 } else {
3687 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3688 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3689 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3690 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3691 }
3692 radio_manuf = (tmp & 0x00000FFF);
3693 radio_ver = (tmp & 0x0FFFF000) >> 12;
3694 radio_rev = (tmp & 0xF0000000) >> 28;
3695 if (radio_manuf != 0x17F /* Broadcom */)
3696 unsupported = 1;
3697 switch (phy_type) {
3698 case B43_PHYTYPE_A:
3699 if (radio_ver != 0x2060)
3700 unsupported = 1;
3701 if (radio_rev != 1)
3702 unsupported = 1;
3703 if (radio_manuf != 0x17F)
3704 unsupported = 1;
3705 break;
3706 case B43_PHYTYPE_B:
3707 if ((radio_ver & 0xFFF0) != 0x2050)
3708 unsupported = 1;
3709 break;
3710 case B43_PHYTYPE_G:
3711 if (radio_ver != 0x2050)
3712 unsupported = 1;
3713 break;
3714 case B43_PHYTYPE_N:
3715 if (radio_ver != 0x2055)
3716 unsupported = 1;
3717 break;
3718 default:
3719 B43_WARN_ON(1);
3720 }
3721 if (unsupported) {
3722 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3723 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3724 radio_manuf, radio_ver, radio_rev);
3725 return -EOPNOTSUPP;
3726 }
3727 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3728 radio_manuf, radio_ver, radio_rev);
3729
3730 phy->radio_manuf = radio_manuf;
3731 phy->radio_ver = radio_ver;
3732 phy->radio_rev = radio_rev;
3733
3734 phy->analog = analog_type;
3735 phy->type = phy_type;
3736 phy->rev = phy_rev;
3737
3738 return 0;
3739 }
3740
3741 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3742 struct b43_phy *phy)
3743 {
3744 struct b43_txpower_lo_control *lo;
3745 int i;
3746
3747 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3748 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3749
3750 phy->aci_enable = 0;
3751 phy->aci_wlan_automatic = 0;
3752 phy->aci_hw_rssi = 0;
3753
3754 phy->radio_off_context.valid = 0;
3755
3756 lo = phy->lo_control;
3757 if (lo) {
3758 memset(lo, 0, sizeof(*(phy->lo_control)));
3759 lo->tx_bias = 0xFF;
3760 INIT_LIST_HEAD(&lo->calib_list);
3761 }
3762 phy->max_lb_gain = 0;
3763 phy->trsw_rx_gain = 0;
3764 phy->txpwr_offset = 0;
3765
3766 /* NRSSI */
3767 phy->nrssislope = 0;
3768 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3769 phy->nrssi[i] = -1000;
3770 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3771 phy->nrssi_lt[i] = i;
3772
3773 phy->lofcal = 0xFFFF;
3774 phy->initval = 0xFFFF;
3775
3776 phy->interfmode = B43_INTERFMODE_NONE;
3777 phy->channel = 0xFF;
3778
3779 phy->hardware_power_control = !!modparam_hwpctl;
3780
3781 /* PHY TX errors counter. */
3782 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3783
3784 /* OFDM-table address caching. */
3785 phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3786 }
3787
3788 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3789 {
3790 dev->dfq_valid = 0;
3791
3792 /* Assume the radio is enabled. If it's not enabled, the state will
3793 * immediately get fixed on the first periodic work run. */
3794 dev->radio_hw_enable = 1;
3795
3796 /* Stats */
3797 memset(&dev->stats, 0, sizeof(dev->stats));
3798
3799 setup_struct_phy_for_init(dev, &dev->phy);
3800
3801 /* IRQ related flags */
3802 dev->irq_reason = 0;
3803 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3804 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3805
3806 dev->mac_suspended = 1;
3807
3808 /* Noise calculation context */
3809 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3810 }
3811
3812 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3813 {
3814 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3815 u64 hf;
3816
3817 if (!modparam_btcoex)
3818 return;
3819 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3820 return;
3821 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3822 return;
3823
3824 hf = b43_hf_read(dev);
3825 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3826 hf |= B43_HF_BTCOEXALT;
3827 else
3828 hf |= B43_HF_BTCOEX;
3829 b43_hf_write(dev, hf);
3830 }
3831
3832 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3833 {
3834 if (!modparam_btcoex)
3835 return;
3836 //TODO
3837 }
3838
3839 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3840 {
3841 #ifdef CONFIG_SSB_DRIVER_PCICORE
3842 struct ssb_bus *bus = dev->dev->bus;
3843 u32 tmp;
3844
3845 if (bus->pcicore.dev &&
3846 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3847 bus->pcicore.dev->id.revision <= 5) {
3848 /* IMCFGLO timeouts workaround. */
3849 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3850 tmp &= ~SSB_IMCFGLO_REQTO;
3851 tmp &= ~SSB_IMCFGLO_SERTO;
3852 switch (bus->bustype) {
3853 case SSB_BUSTYPE_PCI:
3854 case SSB_BUSTYPE_PCMCIA:
3855 tmp |= 0x32;
3856 break;
3857 case SSB_BUSTYPE_SSB:
3858 tmp |= 0x53;
3859 break;
3860 }
3861 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3862 }
3863 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3864 }
3865
3866 /* Write the short and long frame retry limit values. */
3867 static void b43_set_retry_limits(struct b43_wldev *dev,
3868 unsigned int short_retry,
3869 unsigned int long_retry)
3870 {
3871 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3872 * the chip-internal counter. */
3873 short_retry = min(short_retry, (unsigned int)0xF);
3874 long_retry = min(long_retry, (unsigned int)0xF);
3875
3876 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3877 short_retry);
3878 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3879 long_retry);
3880 }
3881
3882 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
3883 {
3884 u16 pu_delay;
3885
3886 /* The time value is in microseconds. */
3887 if (dev->phy.type == B43_PHYTYPE_A)
3888 pu_delay = 3700;
3889 else
3890 pu_delay = 1050;
3891 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS) || idle)
3892 pu_delay = 500;
3893 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3894 pu_delay = max(pu_delay, (u16)2400);
3895
3896 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
3897 }
3898
3899 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3900 static void b43_set_pretbtt(struct b43_wldev *dev)
3901 {
3902 u16 pretbtt;
3903
3904 /* The time value is in microseconds. */
3905 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) {
3906 pretbtt = 2;
3907 } else {
3908 if (dev->phy.type == B43_PHYTYPE_A)
3909 pretbtt = 120;
3910 else
3911 pretbtt = 250;
3912 }
3913 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
3914 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
3915 }
3916
3917 /* Shutdown a wireless core */
3918 /* Locking: wl->mutex */
3919 static void b43_wireless_core_exit(struct b43_wldev *dev)
3920 {
3921 struct b43_phy *phy = &dev->phy;
3922 u32 macctl;
3923
3924 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3925 if (b43_status(dev) != B43_STAT_INITIALIZED)
3926 return;
3927 b43_set_status(dev, B43_STAT_UNINIT);
3928
3929 /* Stop the microcode PSM. */
3930 macctl = b43_read32(dev, B43_MMIO_MACCTL);
3931 macctl &= ~B43_MACCTL_PSM_RUN;
3932 macctl |= B43_MACCTL_PSM_JMP0;
3933 b43_write32(dev, B43_MMIO_MACCTL, macctl);
3934
3935 if (!dev->suspend_in_progress) {
3936 b43_leds_exit(dev);
3937 b43_rng_exit(dev->wl);
3938 }
3939 b43_dma_free(dev);
3940 b43_pio_free(dev);
3941 b43_chip_exit(dev);
3942 b43_radio_turn_off(dev, 1);
3943 b43_switch_analog(dev, 0);
3944 if (phy->dyn_tssi_tbl)
3945 kfree(phy->tssi2dbm);
3946 kfree(phy->lo_control);
3947 phy->lo_control = NULL;
3948 if (dev->wl->current_beacon) {
3949 dev_kfree_skb_any(dev->wl->current_beacon);
3950 dev->wl->current_beacon = NULL;
3951 }
3952
3953 ssb_device_disable(dev->dev, 0);
3954 ssb_bus_may_powerdown(dev->dev->bus);
3955 }
3956
3957 /* Initialize a wireless core */
3958 static int b43_wireless_core_init(struct b43_wldev *dev)
3959 {
3960 struct b43_wl *wl = dev->wl;
3961 struct ssb_bus *bus = dev->dev->bus;
3962 struct ssb_sprom *sprom = &bus->sprom;
3963 struct b43_phy *phy = &dev->phy;
3964 int err;
3965 u64 hf;
3966 u32 tmp;
3967
3968 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3969
3970 err = ssb_bus_powerup(bus, 0);
3971 if (err)
3972 goto out;
3973 if (!ssb_device_is_enabled(dev->dev)) {
3974 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3975 b43_wireless_core_reset(dev, tmp);
3976 }
3977
3978 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3979 phy->lo_control =
3980 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3981 if (!phy->lo_control) {
3982 err = -ENOMEM;
3983 goto err_busdown;
3984 }
3985 }
3986 setup_struct_wldev_for_init(dev);
3987
3988 err = b43_phy_init_tssi2dbm_table(dev);
3989 if (err)
3990 goto err_kfree_lo_control;
3991
3992 /* Enable IRQ routing to this device. */
3993 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3994
3995 b43_imcfglo_timeouts_workaround(dev);
3996 b43_bluetooth_coext_disable(dev);
3997 b43_phy_early_init(dev);
3998 err = b43_chip_init(dev);
3999 if (err)
4000 goto err_kfree_tssitbl;
4001 b43_shm_write16(dev, B43_SHM_SHARED,
4002 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4003 hf = b43_hf_read(dev);
4004 if (phy->type == B43_PHYTYPE_G) {
4005 hf |= B43_HF_SYMW;
4006 if (phy->rev == 1)
4007 hf |= B43_HF_GDCW;
4008 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4009 hf |= B43_HF_OFDMPABOOST;
4010 } else if (phy->type == B43_PHYTYPE_B) {
4011 hf |= B43_HF_SYMW;
4012 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
4013 hf &= ~B43_HF_GDCW;
4014 }
4015 b43_hf_write(dev, hf);
4016
4017 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4018 B43_DEFAULT_LONG_RETRY_LIMIT);
4019 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4020 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4021
4022 /* Disable sending probe responses from firmware.
4023 * Setting the MaxTime to one usec will always trigger
4024 * a timeout, so we never send any probe resp.
4025 * A timeout of zero is infinite. */
4026 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4027
4028 b43_rate_memory_init(dev);
4029 b43_set_phytxctl_defaults(dev);
4030
4031 /* Minimum Contention Window */
4032 if (phy->type == B43_PHYTYPE_B) {
4033 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4034 } else {
4035 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4036 }
4037 /* Maximum Contention Window */
4038 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4039
4040 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4041 dev->__using_pio_transfers = 1;
4042 err = b43_pio_init(dev);
4043 } else {
4044 dev->__using_pio_transfers = 0;
4045 err = b43_dma_init(dev);
4046 }
4047 if (err)
4048 goto err_chip_exit;
4049 b43_qos_init(dev);
4050 b43_set_synth_pu_delay(dev, 1);
4051 b43_bluetooth_coext_enable(dev);
4052
4053 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
4054 b43_upload_card_macaddress(dev);
4055 b43_security_init(dev);
4056 if (!dev->suspend_in_progress)
4057 b43_rng_init(wl);
4058
4059 b43_set_status(dev, B43_STAT_INITIALIZED);
4060
4061 if (!dev->suspend_in_progress)
4062 b43_leds_init(dev);
4063 out:
4064 return err;
4065
4066 err_chip_exit:
4067 b43_chip_exit(dev);
4068 err_kfree_tssitbl:
4069 if (phy->dyn_tssi_tbl)
4070 kfree(phy->tssi2dbm);
4071 err_kfree_lo_control:
4072 kfree(phy->lo_control);
4073 phy->lo_control = NULL;
4074 err_busdown:
4075 ssb_bus_may_powerdown(bus);
4076 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4077 return err;
4078 }
4079
4080 static int b43_op_add_interface(struct ieee80211_hw *hw,
4081 struct ieee80211_if_init_conf *conf)
4082 {
4083 struct b43_wl *wl = hw_to_b43_wl(hw);
4084 struct b43_wldev *dev;
4085 unsigned long flags;
4086 int err = -EOPNOTSUPP;
4087
4088 /* TODO: allow WDS/AP devices to coexist */
4089
4090 if (conf->type != IEEE80211_IF_TYPE_AP &&
4091 conf->type != IEEE80211_IF_TYPE_STA &&
4092 conf->type != IEEE80211_IF_TYPE_WDS &&
4093 conf->type != IEEE80211_IF_TYPE_IBSS)
4094 return -EOPNOTSUPP;
4095
4096 mutex_lock(&wl->mutex);
4097 if (wl->operating)
4098 goto out_mutex_unlock;
4099
4100 b43dbg(wl, "Adding Interface type %d\n", conf->type);
4101
4102 dev = wl->current_dev;
4103 wl->operating = 1;
4104 wl->vif = conf->vif;
4105 wl->if_type = conf->type;
4106 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4107
4108 spin_lock_irqsave(&wl->irq_lock, flags);
4109 b43_adjust_opmode(dev);
4110 b43_set_pretbtt(dev);
4111 b43_set_synth_pu_delay(dev, 0);
4112 b43_upload_card_macaddress(dev);
4113 spin_unlock_irqrestore(&wl->irq_lock, flags);
4114
4115 err = 0;
4116 out_mutex_unlock:
4117 mutex_unlock(&wl->mutex);
4118
4119 return err;
4120 }
4121
4122 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4123 struct ieee80211_if_init_conf *conf)
4124 {
4125 struct b43_wl *wl = hw_to_b43_wl(hw);
4126 struct b43_wldev *dev = wl->current_dev;
4127 unsigned long flags;
4128
4129 b43dbg(wl, "Removing Interface type %d\n", conf->type);
4130
4131 mutex_lock(&wl->mutex);
4132
4133 B43_WARN_ON(!wl->operating);
4134 B43_WARN_ON(wl->vif != conf->vif);
4135 wl->vif = NULL;
4136
4137 wl->operating = 0;
4138
4139 spin_lock_irqsave(&wl->irq_lock, flags);
4140 b43_adjust_opmode(dev);
4141 memset(wl->mac_addr, 0, ETH_ALEN);
4142 b43_upload_card_macaddress(dev);
4143 spin_unlock_irqrestore(&wl->irq_lock, flags);
4144
4145 mutex_unlock(&wl->mutex);
4146 }
4147
4148 static int b43_op_start(struct ieee80211_hw *hw)
4149 {
4150 struct b43_wl *wl = hw_to_b43_wl(hw);
4151 struct b43_wldev *dev = wl->current_dev;
4152 int did_init = 0;
4153 int err = 0;
4154 bool do_rfkill_exit = 0;
4155
4156 /* Kill all old instance specific information to make sure
4157 * the card won't use it in the short timeframe between start
4158 * and mac80211 reconfiguring it. */
4159 memset(wl->bssid, 0, ETH_ALEN);
4160 memset(wl->mac_addr, 0, ETH_ALEN);
4161 wl->filter_flags = 0;
4162 wl->radiotap_enabled = 0;
4163 b43_qos_clear(wl);
4164
4165 /* First register RFkill.
4166 * LEDs that are registered later depend on it. */
4167 b43_rfkill_init(dev);
4168
4169 mutex_lock(&wl->mutex);
4170
4171 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4172 err = b43_wireless_core_init(dev);
4173 if (err) {
4174 do_rfkill_exit = 1;
4175 goto out_mutex_unlock;
4176 }
4177 did_init = 1;
4178 }
4179
4180 if (b43_status(dev) < B43_STAT_STARTED) {
4181 err = b43_wireless_core_start(dev);
4182 if (err) {
4183 if (did_init)
4184 b43_wireless_core_exit(dev);
4185 do_rfkill_exit = 1;
4186 goto out_mutex_unlock;
4187 }
4188 }
4189
4190 out_mutex_unlock:
4191 mutex_unlock(&wl->mutex);
4192
4193 if (do_rfkill_exit)
4194 b43_rfkill_exit(dev);
4195
4196 return err;
4197 }
4198
4199 static void b43_op_stop(struct ieee80211_hw *hw)
4200 {
4201 struct b43_wl *wl = hw_to_b43_wl(hw);
4202 struct b43_wldev *dev = wl->current_dev;
4203
4204 b43_rfkill_exit(dev);
4205 cancel_work_sync(&(wl->qos_update_work));
4206 cancel_work_sync(&(wl->beacon_update_trigger));
4207
4208 mutex_lock(&wl->mutex);
4209 if (b43_status(dev) >= B43_STAT_STARTED)
4210 b43_wireless_core_stop(dev);
4211 b43_wireless_core_exit(dev);
4212 mutex_unlock(&wl->mutex);
4213 }
4214
4215 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
4216 u32 short_retry_limit, u32 long_retry_limit)
4217 {
4218 struct b43_wl *wl = hw_to_b43_wl(hw);
4219 struct b43_wldev *dev;
4220 int err = 0;
4221
4222 mutex_lock(&wl->mutex);
4223 dev = wl->current_dev;
4224 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
4225 err = -ENODEV;
4226 goto out_unlock;
4227 }
4228 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
4229 out_unlock:
4230 mutex_unlock(&wl->mutex);
4231
4232 return err;
4233 }
4234
4235 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set)
4236 {
4237 struct b43_wl *wl = hw_to_b43_wl(hw);
4238 struct sk_buff *beacon;
4239 unsigned long flags;
4240
4241 /* We could modify the existing beacon and set the aid bit in
4242 * the TIM field, but that would probably require resizing and
4243 * moving of data within the beacon template.
4244 * Simply request a new beacon and let mac80211 do the hard work. */
4245 beacon = ieee80211_beacon_get(hw, wl->vif);
4246 if (unlikely(!beacon))
4247 return -ENOMEM;
4248 spin_lock_irqsave(&wl->irq_lock, flags);
4249 b43_update_templates(wl, beacon);
4250 spin_unlock_irqrestore(&wl->irq_lock, flags);
4251
4252 return 0;
4253 }
4254
4255 static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw,
4256 struct sk_buff *beacon)
4257 {
4258 struct b43_wl *wl = hw_to_b43_wl(hw);
4259 unsigned long flags;
4260
4261 spin_lock_irqsave(&wl->irq_lock, flags);
4262 b43_update_templates(wl, beacon);
4263 spin_unlock_irqrestore(&wl->irq_lock, flags);
4264
4265 return 0;
4266 }
4267
4268 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4269 struct ieee80211_vif *vif,
4270 enum sta_notify_cmd notify_cmd,
4271 const u8 *addr)
4272 {
4273 struct b43_wl *wl = hw_to_b43_wl(hw);
4274
4275 B43_WARN_ON(!vif || wl->vif != vif);
4276 }
4277
4278 static const struct ieee80211_ops b43_hw_ops = {
4279 .tx = b43_op_tx,
4280 .conf_tx = b43_op_conf_tx,
4281 .add_interface = b43_op_add_interface,
4282 .remove_interface = b43_op_remove_interface,
4283 .config = b43_op_config,
4284 .config_interface = b43_op_config_interface,
4285 .configure_filter = b43_op_configure_filter,
4286 .set_key = b43_op_set_key,
4287 .get_stats = b43_op_get_stats,
4288 .get_tx_stats = b43_op_get_tx_stats,
4289 .start = b43_op_start,
4290 .stop = b43_op_stop,
4291 .set_retry_limit = b43_op_set_retry_limit,
4292 .set_tim = b43_op_beacon_set_tim,
4293 .beacon_update = b43_op_ibss_beacon_update,
4294 .sta_notify = b43_op_sta_notify,
4295 };
4296
4297 /* Hard-reset the chip. Do not call this directly.
4298 * Use b43_controller_restart()
4299 */
4300 static void b43_chip_reset(struct work_struct *work)
4301 {
4302 struct b43_wldev *dev =
4303 container_of(work, struct b43_wldev, restart_work);
4304 struct b43_wl *wl = dev->wl;
4305 int err = 0;
4306 int prev_status;
4307
4308 mutex_lock(&wl->mutex);
4309
4310 prev_status = b43_status(dev);
4311 /* Bring the device down... */
4312 if (prev_status >= B43_STAT_STARTED)
4313 b43_wireless_core_stop(dev);
4314 if (prev_status >= B43_STAT_INITIALIZED)
4315 b43_wireless_core_exit(dev);
4316
4317 /* ...and up again. */
4318 if (prev_status >= B43_STAT_INITIALIZED) {
4319 err = b43_wireless_core_init(dev);
4320 if (err)
4321 goto out;
4322 }
4323 if (prev_status >= B43_STAT_STARTED) {
4324 err = b43_wireless_core_start(dev);
4325 if (err) {
4326 b43_wireless_core_exit(dev);
4327 goto out;
4328 }
4329 }
4330 out:
4331 mutex_unlock(&wl->mutex);
4332 if (err)
4333 b43err(wl, "Controller restart FAILED\n");
4334 else
4335 b43info(wl, "Controller restarted\n");
4336 }
4337
4338 static int b43_setup_bands(struct b43_wldev *dev,
4339 bool have_2ghz_phy, bool have_5ghz_phy)
4340 {
4341 struct ieee80211_hw *hw = dev->wl->hw;
4342
4343 if (have_2ghz_phy)
4344 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4345 if (dev->phy.type == B43_PHYTYPE_N) {
4346 if (have_5ghz_phy)
4347 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4348 } else {
4349 if (have_5ghz_phy)
4350 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4351 }
4352
4353 dev->phy.supports_2ghz = have_2ghz_phy;
4354 dev->phy.supports_5ghz = have_5ghz_phy;
4355
4356 return 0;
4357 }
4358
4359 static void b43_wireless_core_detach(struct b43_wldev *dev)
4360 {
4361 /* We release firmware that late to not be required to re-request
4362 * is all the time when we reinit the core. */
4363 b43_release_firmware(dev);
4364 }
4365
4366 static int b43_wireless_core_attach(struct b43_wldev *dev)
4367 {
4368 struct b43_wl *wl = dev->wl;
4369 struct ssb_bus *bus = dev->dev->bus;
4370 struct pci_dev *pdev = bus->host_pci;
4371 int err;
4372 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4373 u32 tmp;
4374
4375 /* Do NOT do any device initialization here.
4376 * Do it in wireless_core_init() instead.
4377 * This function is for gathering basic information about the HW, only.
4378 * Also some structs may be set up here. But most likely you want to have
4379 * that in core_init(), too.
4380 */
4381
4382 err = ssb_bus_powerup(bus, 0);
4383 if (err) {
4384 b43err(wl, "Bus powerup failed\n");
4385 goto out;
4386 }
4387 /* Get the PHY type. */
4388 if (dev->dev->id.revision >= 5) {
4389 u32 tmshigh;
4390
4391 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4392 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4393 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4394 } else
4395 B43_WARN_ON(1);
4396
4397 dev->phy.gmode = have_2ghz_phy;
4398 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4399 b43_wireless_core_reset(dev, tmp);
4400
4401 err = b43_phy_versioning(dev);
4402 if (err)
4403 goto err_powerdown;
4404 /* Check if this device supports multiband. */
4405 if (!pdev ||
4406 (pdev->device != 0x4312 &&
4407 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4408 /* No multiband support. */
4409 have_2ghz_phy = 0;
4410 have_5ghz_phy = 0;
4411 switch (dev->phy.type) {
4412 case B43_PHYTYPE_A:
4413 have_5ghz_phy = 1;
4414 break;
4415 case B43_PHYTYPE_G:
4416 case B43_PHYTYPE_N:
4417 have_2ghz_phy = 1;
4418 break;
4419 default:
4420 B43_WARN_ON(1);
4421 }
4422 }
4423 if (dev->phy.type == B43_PHYTYPE_A) {
4424 /* FIXME */
4425 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4426 err = -EOPNOTSUPP;
4427 goto err_powerdown;
4428 }
4429 if (1 /* disable A-PHY */) {
4430 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4431 if (dev->phy.type != B43_PHYTYPE_N) {
4432 have_2ghz_phy = 1;
4433 have_5ghz_phy = 0;
4434 }
4435 }
4436
4437 dev->phy.gmode = have_2ghz_phy;
4438 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4439 b43_wireless_core_reset(dev, tmp);
4440
4441 err = b43_validate_chipaccess(dev);
4442 if (err)
4443 goto err_powerdown;
4444 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4445 if (err)
4446 goto err_powerdown;
4447
4448 /* Now set some default "current_dev" */
4449 if (!wl->current_dev)
4450 wl->current_dev = dev;
4451 INIT_WORK(&dev->restart_work, b43_chip_reset);
4452
4453 b43_radio_turn_off(dev, 1);
4454 b43_switch_analog(dev, 0);
4455 ssb_device_disable(dev->dev, 0);
4456 ssb_bus_may_powerdown(bus);
4457
4458 out:
4459 return err;
4460
4461 err_powerdown:
4462 ssb_bus_may_powerdown(bus);
4463 return err;
4464 }
4465
4466 static void b43_one_core_detach(struct ssb_device *dev)
4467 {
4468 struct b43_wldev *wldev;
4469 struct b43_wl *wl;
4470
4471 wldev = ssb_get_drvdata(dev);
4472 wl = wldev->wl;
4473 cancel_work_sync(&wldev->restart_work);
4474 b43_debugfs_remove_device(wldev);
4475 b43_wireless_core_detach(wldev);
4476 list_del(&wldev->list);
4477 wl->nr_devs--;
4478 ssb_set_drvdata(dev, NULL);
4479 kfree(wldev);
4480 }
4481
4482 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4483 {
4484 struct b43_wldev *wldev;
4485 struct pci_dev *pdev;
4486 int err = -ENOMEM;
4487
4488 if (!list_empty(&wl->devlist)) {
4489 /* We are not the first core on this chip. */
4490 pdev = dev->bus->host_pci;
4491 /* Only special chips support more than one wireless
4492 * core, although some of the other chips have more than
4493 * one wireless core as well. Check for this and
4494 * bail out early.
4495 */
4496 if (!pdev ||
4497 ((pdev->device != 0x4321) &&
4498 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4499 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4500 return -ENODEV;
4501 }
4502 }
4503
4504 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4505 if (!wldev)
4506 goto out;
4507
4508 wldev->dev = dev;
4509 wldev->wl = wl;
4510 b43_set_status(wldev, B43_STAT_UNINIT);
4511 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4512 tasklet_init(&wldev->isr_tasklet,
4513 (void (*)(unsigned long))b43_interrupt_tasklet,
4514 (unsigned long)wldev);
4515 INIT_LIST_HEAD(&wldev->list);
4516
4517 err = b43_wireless_core_attach(wldev);
4518 if (err)
4519 goto err_kfree_wldev;
4520
4521 list_add(&wldev->list, &wl->devlist);
4522 wl->nr_devs++;
4523 ssb_set_drvdata(dev, wldev);
4524 b43_debugfs_add_device(wldev);
4525
4526 out:
4527 return err;
4528
4529 err_kfree_wldev:
4530 kfree(wldev);
4531 return err;
4532 }
4533
4534 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4535 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4536 (pdev->device == _device) && \
4537 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4538 (pdev->subsystem_device == _subdevice) )
4539
4540 static void b43_sprom_fixup(struct ssb_bus *bus)
4541 {
4542 struct pci_dev *pdev;
4543
4544 /* boardflags workarounds */
4545 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4546 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4547 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4548 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4549 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4550 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4551 if (bus->bustype == SSB_BUSTYPE_PCI) {
4552 pdev = bus->host_pci;
4553 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4554 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4555 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013))
4556 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4557 }
4558 }
4559
4560 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4561 {
4562 struct ieee80211_hw *hw = wl->hw;
4563
4564 ssb_set_devtypedata(dev, NULL);
4565 ieee80211_free_hw(hw);
4566 }
4567
4568 static int b43_wireless_init(struct ssb_device *dev)
4569 {
4570 struct ssb_sprom *sprom = &dev->bus->sprom;
4571 struct ieee80211_hw *hw;
4572 struct b43_wl *wl;
4573 int err = -ENOMEM;
4574
4575 b43_sprom_fixup(dev->bus);
4576
4577 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4578 if (!hw) {
4579 b43err(NULL, "Could not allocate ieee80211 device\n");
4580 goto out;
4581 }
4582
4583 /* fill hw info */
4584 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
4585 IEEE80211_HW_RX_INCLUDES_FCS |
4586 IEEE80211_HW_SIGNAL_DBM |
4587 IEEE80211_HW_NOISE_DBM;
4588
4589 hw->queues = b43_modparam_qos ? 4 : 1;
4590 SET_IEEE80211_DEV(hw, dev->dev);
4591 if (is_valid_ether_addr(sprom->et1mac))
4592 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4593 else
4594 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4595
4596 /* Get and initialize struct b43_wl */
4597 wl = hw_to_b43_wl(hw);
4598 memset(wl, 0, sizeof(*wl));
4599 wl->hw = hw;
4600 spin_lock_init(&wl->irq_lock);
4601 rwlock_init(&wl->tx_lock);
4602 spin_lock_init(&wl->leds_lock);
4603 spin_lock_init(&wl->shm_lock);
4604 mutex_init(&wl->mutex);
4605 INIT_LIST_HEAD(&wl->devlist);
4606 INIT_WORK(&wl->qos_update_work, b43_qos_update_work);
4607 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4608
4609 ssb_set_devtypedata(dev, wl);
4610 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4611 err = 0;
4612 out:
4613 return err;
4614 }
4615
4616 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4617 {
4618 struct b43_wl *wl;
4619 int err;
4620 int first = 0;
4621
4622 wl = ssb_get_devtypedata(dev);
4623 if (!wl) {
4624 /* Probing the first core. Must setup common struct b43_wl */
4625 first = 1;
4626 err = b43_wireless_init(dev);
4627 if (err)
4628 goto out;
4629 wl = ssb_get_devtypedata(dev);
4630 B43_WARN_ON(!wl);
4631 }
4632 err = b43_one_core_attach(dev, wl);
4633 if (err)
4634 goto err_wireless_exit;
4635
4636 if (first) {
4637 err = ieee80211_register_hw(wl->hw);
4638 if (err)
4639 goto err_one_core_detach;
4640 }
4641
4642 out:
4643 return err;
4644
4645 err_one_core_detach:
4646 b43_one_core_detach(dev);
4647 err_wireless_exit:
4648 if (first)
4649 b43_wireless_exit(dev, wl);
4650 return err;
4651 }
4652
4653 static void b43_remove(struct ssb_device *dev)
4654 {
4655 struct b43_wl *wl = ssb_get_devtypedata(dev);
4656 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4657
4658 B43_WARN_ON(!wl);
4659 if (wl->current_dev == wldev)
4660 ieee80211_unregister_hw(wl->hw);
4661
4662 b43_one_core_detach(dev);
4663
4664 if (list_empty(&wl->devlist)) {
4665 /* Last core on the chip unregistered.
4666 * We can destroy common struct b43_wl.
4667 */
4668 b43_wireless_exit(dev, wl);
4669 }
4670 }
4671
4672 /* Perform a hardware reset. This can be called from any context. */
4673 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4674 {
4675 /* Must avoid requeueing, if we are in shutdown. */
4676 if (b43_status(dev) < B43_STAT_INITIALIZED)
4677 return;
4678 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4679 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4680 }
4681
4682 #ifdef CONFIG_PM
4683
4684 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4685 {
4686 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4687 struct b43_wl *wl = wldev->wl;
4688
4689 b43dbg(wl, "Suspending...\n");
4690
4691 mutex_lock(&wl->mutex);
4692 wldev->suspend_in_progress = true;
4693 wldev->suspend_init_status = b43_status(wldev);
4694 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4695 b43_wireless_core_stop(wldev);
4696 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4697 b43_wireless_core_exit(wldev);
4698 mutex_unlock(&wl->mutex);
4699
4700 b43dbg(wl, "Device suspended.\n");
4701
4702 return 0;
4703 }
4704
4705 static int b43_resume(struct ssb_device *dev)
4706 {
4707 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4708 struct b43_wl *wl = wldev->wl;
4709 int err = 0;
4710
4711 b43dbg(wl, "Resuming...\n");
4712
4713 mutex_lock(&wl->mutex);
4714 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4715 err = b43_wireless_core_init(wldev);
4716 if (err) {
4717 b43err(wl, "Resume failed at core init\n");
4718 goto out;
4719 }
4720 }
4721 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4722 err = b43_wireless_core_start(wldev);
4723 if (err) {
4724 b43_leds_exit(wldev);
4725 b43_rng_exit(wldev->wl);
4726 b43_wireless_core_exit(wldev);
4727 b43err(wl, "Resume failed at core start\n");
4728 goto out;
4729 }
4730 }
4731 b43dbg(wl, "Device resumed.\n");
4732 out:
4733 wldev->suspend_in_progress = false;
4734 mutex_unlock(&wl->mutex);
4735 return err;
4736 }
4737
4738 #else /* CONFIG_PM */
4739 # define b43_suspend NULL
4740 # define b43_resume NULL
4741 #endif /* CONFIG_PM */
4742
4743 static struct ssb_driver b43_ssb_driver = {
4744 .name = KBUILD_MODNAME,
4745 .id_table = b43_ssb_tbl,
4746 .probe = b43_probe,
4747 .remove = b43_remove,
4748 .suspend = b43_suspend,
4749 .resume = b43_resume,
4750 };
4751
4752 static void b43_print_driverinfo(void)
4753 {
4754 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4755 *feat_leds = "", *feat_rfkill = "";
4756
4757 #ifdef CONFIG_B43_PCI_AUTOSELECT
4758 feat_pci = "P";
4759 #endif
4760 #ifdef CONFIG_B43_PCMCIA
4761 feat_pcmcia = "M";
4762 #endif
4763 #ifdef CONFIG_B43_NPHY
4764 feat_nphy = "N";
4765 #endif
4766 #ifdef CONFIG_B43_LEDS
4767 feat_leds = "L";
4768 #endif
4769 #ifdef CONFIG_B43_RFKILL
4770 feat_rfkill = "R";
4771 #endif
4772 printk(KERN_INFO "Broadcom 43xx driver loaded "
4773 "[ Features: %s%s%s%s%s, Firmware-ID: "
4774 B43_SUPPORTED_FIRMWARE_ID " ]\n",
4775 feat_pci, feat_pcmcia, feat_nphy,
4776 feat_leds, feat_rfkill);
4777 }
4778
4779 static int __init b43_init(void)
4780 {
4781 int err;
4782
4783 b43_debugfs_init();
4784 err = b43_pcmcia_init();
4785 if (err)
4786 goto err_dfs_exit;
4787 err = ssb_driver_register(&b43_ssb_driver);
4788 if (err)
4789 goto err_pcmcia_exit;
4790 b43_print_driverinfo();
4791
4792 return err;
4793
4794 err_pcmcia_exit:
4795 b43_pcmcia_exit();
4796 err_dfs_exit:
4797 b43_debugfs_exit();
4798 return err;
4799 }
4800
4801 static void __exit b43_exit(void)
4802 {
4803 ssb_driver_unregister(&b43_ssb_driver);
4804 b43_pcmcia_exit();
4805 b43_debugfs_exit();
4806 }
4807
4808 module_init(b43_init)
4809 module_exit(b43_exit)
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