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b43: Workaround circular locking in hw-tkip key update callback
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / b43 / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005-2009 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 SDIO support
12 Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
13
14 Some parts of the code in this file are derived from the ipw2200
15 driver Copyright(c) 2003 - 2004 Intel Corporation.
16
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License, or
20 (at your option) any later version.
21
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
26
27 You should have received a copy of the GNU General Public License
28 along with this program; see the file COPYING. If not, write to
29 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
30 Boston, MA 02110-1301, USA.
31
32 */
33
34 #include <linux/delay.h>
35 #include <linux/init.h>
36 #include <linux/moduleparam.h>
37 #include <linux/if_arp.h>
38 #include <linux/etherdevice.h>
39 #include <linux/firmware.h>
40 #include <linux/wireless.h>
41 #include <linux/workqueue.h>
42 #include <linux/skbuff.h>
43 #include <linux/io.h>
44 #include <linux/dma-mapping.h>
45 #include <asm/unaligned.h>
46
47 #include "b43.h"
48 #include "main.h"
49 #include "debugfs.h"
50 #include "phy_common.h"
51 #include "phy_g.h"
52 #include "phy_n.h"
53 #include "dma.h"
54 #include "pio.h"
55 #include "sysfs.h"
56 #include "xmit.h"
57 #include "lo.h"
58 #include "pcmcia.h"
59 #include "sdio.h"
60 #include <linux/mmc/sdio_func.h>
61
62 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
63 MODULE_AUTHOR("Martin Langer");
64 MODULE_AUTHOR("Stefano Brivio");
65 MODULE_AUTHOR("Michael Buesch");
66 MODULE_AUTHOR("Gábor Stefanik");
67 MODULE_LICENSE("GPL");
68
69 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
70 MODULE_FIRMWARE("b43/ucode11.fw");
71 MODULE_FIRMWARE("b43/ucode13.fw");
72 MODULE_FIRMWARE("b43/ucode14.fw");
73 MODULE_FIRMWARE("b43/ucode15.fw");
74 MODULE_FIRMWARE("b43/ucode5.fw");
75 MODULE_FIRMWARE("b43/ucode9.fw");
76
77 static int modparam_bad_frames_preempt;
78 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
79 MODULE_PARM_DESC(bad_frames_preempt,
80 "enable(1) / disable(0) Bad Frames Preemption");
81
82 static char modparam_fwpostfix[16];
83 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
84 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
85
86 static int modparam_hwpctl;
87 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
88 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
89
90 static int modparam_nohwcrypt;
91 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
92 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
93
94 static int modparam_hwtkip;
95 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
96 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
97
98 static int modparam_qos = 1;
99 module_param_named(qos, modparam_qos, int, 0444);
100 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
101
102 static int modparam_btcoex = 1;
103 module_param_named(btcoex, modparam_btcoex, int, 0444);
104 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
105
106 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
107 module_param_named(verbose, b43_modparam_verbose, int, 0644);
108 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
109
110 static int modparam_pio;
111 module_param_named(pio, modparam_pio, int, 0444);
112 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
113
114 static const struct ssb_device_id b43_ssb_tbl[] = {
115 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
116 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
117 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
118 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
119 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
120 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
121 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
122 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
123 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
124 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
125 SSB_DEVTABLE_END
126 };
127
128 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
129
130 /* Channel and ratetables are shared for all devices.
131 * They can't be const, because ieee80211 puts some precalculated
132 * data in there. This data is the same for all devices, so we don't
133 * get concurrency issues */
134 #define RATETAB_ENT(_rateid, _flags) \
135 { \
136 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
137 .hw_value = (_rateid), \
138 .flags = (_flags), \
139 }
140
141 /*
142 * NOTE: When changing this, sync with xmit.c's
143 * b43_plcp_get_bitrate_idx_* functions!
144 */
145 static struct ieee80211_rate __b43_ratetable[] = {
146 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
147 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
148 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
149 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
150 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
151 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
152 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
153 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
154 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
155 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
156 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
157 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
158 };
159
160 #define b43_a_ratetable (__b43_ratetable + 4)
161 #define b43_a_ratetable_size 8
162 #define b43_b_ratetable (__b43_ratetable + 0)
163 #define b43_b_ratetable_size 4
164 #define b43_g_ratetable (__b43_ratetable + 0)
165 #define b43_g_ratetable_size 12
166
167 #define CHAN4G(_channel, _freq, _flags) { \
168 .band = IEEE80211_BAND_2GHZ, \
169 .center_freq = (_freq), \
170 .hw_value = (_channel), \
171 .flags = (_flags), \
172 .max_antenna_gain = 0, \
173 .max_power = 30, \
174 }
175 static struct ieee80211_channel b43_2ghz_chantable[] = {
176 CHAN4G(1, 2412, 0),
177 CHAN4G(2, 2417, 0),
178 CHAN4G(3, 2422, 0),
179 CHAN4G(4, 2427, 0),
180 CHAN4G(5, 2432, 0),
181 CHAN4G(6, 2437, 0),
182 CHAN4G(7, 2442, 0),
183 CHAN4G(8, 2447, 0),
184 CHAN4G(9, 2452, 0),
185 CHAN4G(10, 2457, 0),
186 CHAN4G(11, 2462, 0),
187 CHAN4G(12, 2467, 0),
188 CHAN4G(13, 2472, 0),
189 CHAN4G(14, 2484, 0),
190 };
191 #undef CHAN4G
192
193 #define CHAN5G(_channel, _flags) { \
194 .band = IEEE80211_BAND_5GHZ, \
195 .center_freq = 5000 + (5 * (_channel)), \
196 .hw_value = (_channel), \
197 .flags = (_flags), \
198 .max_antenna_gain = 0, \
199 .max_power = 30, \
200 }
201 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
202 CHAN5G(32, 0), CHAN5G(34, 0),
203 CHAN5G(36, 0), CHAN5G(38, 0),
204 CHAN5G(40, 0), CHAN5G(42, 0),
205 CHAN5G(44, 0), CHAN5G(46, 0),
206 CHAN5G(48, 0), CHAN5G(50, 0),
207 CHAN5G(52, 0), CHAN5G(54, 0),
208 CHAN5G(56, 0), CHAN5G(58, 0),
209 CHAN5G(60, 0), CHAN5G(62, 0),
210 CHAN5G(64, 0), CHAN5G(66, 0),
211 CHAN5G(68, 0), CHAN5G(70, 0),
212 CHAN5G(72, 0), CHAN5G(74, 0),
213 CHAN5G(76, 0), CHAN5G(78, 0),
214 CHAN5G(80, 0), CHAN5G(82, 0),
215 CHAN5G(84, 0), CHAN5G(86, 0),
216 CHAN5G(88, 0), CHAN5G(90, 0),
217 CHAN5G(92, 0), CHAN5G(94, 0),
218 CHAN5G(96, 0), CHAN5G(98, 0),
219 CHAN5G(100, 0), CHAN5G(102, 0),
220 CHAN5G(104, 0), CHAN5G(106, 0),
221 CHAN5G(108, 0), CHAN5G(110, 0),
222 CHAN5G(112, 0), CHAN5G(114, 0),
223 CHAN5G(116, 0), CHAN5G(118, 0),
224 CHAN5G(120, 0), CHAN5G(122, 0),
225 CHAN5G(124, 0), CHAN5G(126, 0),
226 CHAN5G(128, 0), CHAN5G(130, 0),
227 CHAN5G(132, 0), CHAN5G(134, 0),
228 CHAN5G(136, 0), CHAN5G(138, 0),
229 CHAN5G(140, 0), CHAN5G(142, 0),
230 CHAN5G(144, 0), CHAN5G(145, 0),
231 CHAN5G(146, 0), CHAN5G(147, 0),
232 CHAN5G(148, 0), CHAN5G(149, 0),
233 CHAN5G(150, 0), CHAN5G(151, 0),
234 CHAN5G(152, 0), CHAN5G(153, 0),
235 CHAN5G(154, 0), CHAN5G(155, 0),
236 CHAN5G(156, 0), CHAN5G(157, 0),
237 CHAN5G(158, 0), CHAN5G(159, 0),
238 CHAN5G(160, 0), CHAN5G(161, 0),
239 CHAN5G(162, 0), CHAN5G(163, 0),
240 CHAN5G(164, 0), CHAN5G(165, 0),
241 CHAN5G(166, 0), CHAN5G(168, 0),
242 CHAN5G(170, 0), CHAN5G(172, 0),
243 CHAN5G(174, 0), CHAN5G(176, 0),
244 CHAN5G(178, 0), CHAN5G(180, 0),
245 CHAN5G(182, 0), CHAN5G(184, 0),
246 CHAN5G(186, 0), CHAN5G(188, 0),
247 CHAN5G(190, 0), CHAN5G(192, 0),
248 CHAN5G(194, 0), CHAN5G(196, 0),
249 CHAN5G(198, 0), CHAN5G(200, 0),
250 CHAN5G(202, 0), CHAN5G(204, 0),
251 CHAN5G(206, 0), CHAN5G(208, 0),
252 CHAN5G(210, 0), CHAN5G(212, 0),
253 CHAN5G(214, 0), CHAN5G(216, 0),
254 CHAN5G(218, 0), CHAN5G(220, 0),
255 CHAN5G(222, 0), CHAN5G(224, 0),
256 CHAN5G(226, 0), CHAN5G(228, 0),
257 };
258
259 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
260 CHAN5G(34, 0), CHAN5G(36, 0),
261 CHAN5G(38, 0), CHAN5G(40, 0),
262 CHAN5G(42, 0), CHAN5G(44, 0),
263 CHAN5G(46, 0), CHAN5G(48, 0),
264 CHAN5G(52, 0), CHAN5G(56, 0),
265 CHAN5G(60, 0), CHAN5G(64, 0),
266 CHAN5G(100, 0), CHAN5G(104, 0),
267 CHAN5G(108, 0), CHAN5G(112, 0),
268 CHAN5G(116, 0), CHAN5G(120, 0),
269 CHAN5G(124, 0), CHAN5G(128, 0),
270 CHAN5G(132, 0), CHAN5G(136, 0),
271 CHAN5G(140, 0), CHAN5G(149, 0),
272 CHAN5G(153, 0), CHAN5G(157, 0),
273 CHAN5G(161, 0), CHAN5G(165, 0),
274 CHAN5G(184, 0), CHAN5G(188, 0),
275 CHAN5G(192, 0), CHAN5G(196, 0),
276 CHAN5G(200, 0), CHAN5G(204, 0),
277 CHAN5G(208, 0), CHAN5G(212, 0),
278 CHAN5G(216, 0),
279 };
280 #undef CHAN5G
281
282 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
283 .band = IEEE80211_BAND_5GHZ,
284 .channels = b43_5ghz_nphy_chantable,
285 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
286 .bitrates = b43_a_ratetable,
287 .n_bitrates = b43_a_ratetable_size,
288 };
289
290 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
291 .band = IEEE80211_BAND_5GHZ,
292 .channels = b43_5ghz_aphy_chantable,
293 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
294 .bitrates = b43_a_ratetable,
295 .n_bitrates = b43_a_ratetable_size,
296 };
297
298 static struct ieee80211_supported_band b43_band_2GHz = {
299 .band = IEEE80211_BAND_2GHZ,
300 .channels = b43_2ghz_chantable,
301 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
302 .bitrates = b43_g_ratetable,
303 .n_bitrates = b43_g_ratetable_size,
304 };
305
306 static void b43_wireless_core_exit(struct b43_wldev *dev);
307 static int b43_wireless_core_init(struct b43_wldev *dev);
308 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
309 static int b43_wireless_core_start(struct b43_wldev *dev);
310
311 static int b43_ratelimit(struct b43_wl *wl)
312 {
313 if (!wl || !wl->current_dev)
314 return 1;
315 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
316 return 1;
317 /* We are up and running.
318 * Ratelimit the messages to avoid DoS over the net. */
319 return net_ratelimit();
320 }
321
322 void b43info(struct b43_wl *wl, const char *fmt, ...)
323 {
324 va_list args;
325
326 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
327 return;
328 if (!b43_ratelimit(wl))
329 return;
330 va_start(args, fmt);
331 printk(KERN_INFO "b43-%s: ",
332 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
333 vprintk(fmt, args);
334 va_end(args);
335 }
336
337 void b43err(struct b43_wl *wl, const char *fmt, ...)
338 {
339 va_list args;
340
341 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
342 return;
343 if (!b43_ratelimit(wl))
344 return;
345 va_start(args, fmt);
346 printk(KERN_ERR "b43-%s ERROR: ",
347 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
348 vprintk(fmt, args);
349 va_end(args);
350 }
351
352 void b43warn(struct b43_wl *wl, const char *fmt, ...)
353 {
354 va_list args;
355
356 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
357 return;
358 if (!b43_ratelimit(wl))
359 return;
360 va_start(args, fmt);
361 printk(KERN_WARNING "b43-%s warning: ",
362 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
363 vprintk(fmt, args);
364 va_end(args);
365 }
366
367 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
368 {
369 va_list args;
370
371 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
372 return;
373 va_start(args, fmt);
374 printk(KERN_DEBUG "b43-%s debug: ",
375 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
376 vprintk(fmt, args);
377 va_end(args);
378 }
379
380 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
381 {
382 u32 macctl;
383
384 B43_WARN_ON(offset % 4 != 0);
385
386 macctl = b43_read32(dev, B43_MMIO_MACCTL);
387 if (macctl & B43_MACCTL_BE)
388 val = swab32(val);
389
390 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
391 mmiowb();
392 b43_write32(dev, B43_MMIO_RAM_DATA, val);
393 }
394
395 static inline void b43_shm_control_word(struct b43_wldev *dev,
396 u16 routing, u16 offset)
397 {
398 u32 control;
399
400 /* "offset" is the WORD offset. */
401 control = routing;
402 control <<= 16;
403 control |= offset;
404 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
405 }
406
407 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
408 {
409 u32 ret;
410
411 if (routing == B43_SHM_SHARED) {
412 B43_WARN_ON(offset & 0x0001);
413 if (offset & 0x0003) {
414 /* Unaligned access */
415 b43_shm_control_word(dev, routing, offset >> 2);
416 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
417 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
418 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
419
420 goto out;
421 }
422 offset >>= 2;
423 }
424 b43_shm_control_word(dev, routing, offset);
425 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
426 out:
427 return ret;
428 }
429
430 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
431 {
432 u16 ret;
433
434 if (routing == B43_SHM_SHARED) {
435 B43_WARN_ON(offset & 0x0001);
436 if (offset & 0x0003) {
437 /* Unaligned access */
438 b43_shm_control_word(dev, routing, offset >> 2);
439 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
440
441 goto out;
442 }
443 offset >>= 2;
444 }
445 b43_shm_control_word(dev, routing, offset);
446 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
447 out:
448 return ret;
449 }
450
451 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
452 {
453 if (routing == B43_SHM_SHARED) {
454 B43_WARN_ON(offset & 0x0001);
455 if (offset & 0x0003) {
456 /* Unaligned access */
457 b43_shm_control_word(dev, routing, offset >> 2);
458 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
459 value & 0xFFFF);
460 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
461 b43_write16(dev, B43_MMIO_SHM_DATA,
462 (value >> 16) & 0xFFFF);
463 return;
464 }
465 offset >>= 2;
466 }
467 b43_shm_control_word(dev, routing, offset);
468 b43_write32(dev, B43_MMIO_SHM_DATA, value);
469 }
470
471 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
472 {
473 if (routing == B43_SHM_SHARED) {
474 B43_WARN_ON(offset & 0x0001);
475 if (offset & 0x0003) {
476 /* Unaligned access */
477 b43_shm_control_word(dev, routing, offset >> 2);
478 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
479 return;
480 }
481 offset >>= 2;
482 }
483 b43_shm_control_word(dev, routing, offset);
484 b43_write16(dev, B43_MMIO_SHM_DATA, value);
485 }
486
487 /* Read HostFlags */
488 u64 b43_hf_read(struct b43_wldev *dev)
489 {
490 u64 ret;
491
492 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
493 ret <<= 16;
494 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
495 ret <<= 16;
496 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
497
498 return ret;
499 }
500
501 /* Write HostFlags */
502 void b43_hf_write(struct b43_wldev *dev, u64 value)
503 {
504 u16 lo, mi, hi;
505
506 lo = (value & 0x00000000FFFFULL);
507 mi = (value & 0x0000FFFF0000ULL) >> 16;
508 hi = (value & 0xFFFF00000000ULL) >> 32;
509 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
510 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
511 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
512 }
513
514 /* Read the firmware capabilities bitmask (Opensource firmware only) */
515 static u16 b43_fwcapa_read(struct b43_wldev *dev)
516 {
517 B43_WARN_ON(!dev->fw.opensource);
518 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
519 }
520
521 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
522 {
523 u32 low, high;
524
525 B43_WARN_ON(dev->dev->id.revision < 3);
526
527 /* The hardware guarantees us an atomic read, if we
528 * read the low register first. */
529 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
530 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
531
532 *tsf = high;
533 *tsf <<= 32;
534 *tsf |= low;
535 }
536
537 static void b43_time_lock(struct b43_wldev *dev)
538 {
539 u32 macctl;
540
541 macctl = b43_read32(dev, B43_MMIO_MACCTL);
542 macctl |= B43_MACCTL_TBTTHOLD;
543 b43_write32(dev, B43_MMIO_MACCTL, macctl);
544 /* Commit the write */
545 b43_read32(dev, B43_MMIO_MACCTL);
546 }
547
548 static void b43_time_unlock(struct b43_wldev *dev)
549 {
550 u32 macctl;
551
552 macctl = b43_read32(dev, B43_MMIO_MACCTL);
553 macctl &= ~B43_MACCTL_TBTTHOLD;
554 b43_write32(dev, B43_MMIO_MACCTL, macctl);
555 /* Commit the write */
556 b43_read32(dev, B43_MMIO_MACCTL);
557 }
558
559 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
560 {
561 u32 low, high;
562
563 B43_WARN_ON(dev->dev->id.revision < 3);
564
565 low = tsf;
566 high = (tsf >> 32);
567 /* The hardware guarantees us an atomic write, if we
568 * write the low register first. */
569 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
570 mmiowb();
571 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
572 mmiowb();
573 }
574
575 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
576 {
577 b43_time_lock(dev);
578 b43_tsf_write_locked(dev, tsf);
579 b43_time_unlock(dev);
580 }
581
582 static
583 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
584 {
585 static const u8 zero_addr[ETH_ALEN] = { 0 };
586 u16 data;
587
588 if (!mac)
589 mac = zero_addr;
590
591 offset |= 0x0020;
592 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
593
594 data = mac[0];
595 data |= mac[1] << 8;
596 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
597 data = mac[2];
598 data |= mac[3] << 8;
599 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
600 data = mac[4];
601 data |= mac[5] << 8;
602 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
603 }
604
605 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
606 {
607 const u8 *mac;
608 const u8 *bssid;
609 u8 mac_bssid[ETH_ALEN * 2];
610 int i;
611 u32 tmp;
612
613 bssid = dev->wl->bssid;
614 mac = dev->wl->mac_addr;
615
616 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
617
618 memcpy(mac_bssid, mac, ETH_ALEN);
619 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
620
621 /* Write our MAC address and BSSID to template ram */
622 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
623 tmp = (u32) (mac_bssid[i + 0]);
624 tmp |= (u32) (mac_bssid[i + 1]) << 8;
625 tmp |= (u32) (mac_bssid[i + 2]) << 16;
626 tmp |= (u32) (mac_bssid[i + 3]) << 24;
627 b43_ram_write(dev, 0x20 + i, tmp);
628 }
629 }
630
631 static void b43_upload_card_macaddress(struct b43_wldev *dev)
632 {
633 b43_write_mac_bssid_templates(dev);
634 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
635 }
636
637 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
638 {
639 /* slot_time is in usec. */
640 if (dev->phy.type != B43_PHYTYPE_G)
641 return;
642 b43_write16(dev, 0x684, 510 + slot_time);
643 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
644 }
645
646 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
647 {
648 b43_set_slot_time(dev, 9);
649 }
650
651 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
652 {
653 b43_set_slot_time(dev, 20);
654 }
655
656 /* DummyTransmission function, as documented on
657 * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
658 */
659 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
660 {
661 struct b43_phy *phy = &dev->phy;
662 unsigned int i, max_loop;
663 u16 value;
664 u32 buffer[5] = {
665 0x00000000,
666 0x00D40000,
667 0x00000000,
668 0x01000000,
669 0x00000000,
670 };
671
672 if (ofdm) {
673 max_loop = 0x1E;
674 buffer[0] = 0x000201CC;
675 } else {
676 max_loop = 0xFA;
677 buffer[0] = 0x000B846E;
678 }
679
680 for (i = 0; i < 5; i++)
681 b43_ram_write(dev, i * 4, buffer[i]);
682
683 b43_write16(dev, 0x0568, 0x0000);
684 if (dev->dev->id.revision < 11)
685 b43_write16(dev, 0x07C0, 0x0000);
686 else
687 b43_write16(dev, 0x07C0, 0x0100);
688 value = (ofdm ? 0x41 : 0x40);
689 b43_write16(dev, 0x050C, value);
690 if ((phy->type == B43_PHYTYPE_N) || (phy->type == B43_PHYTYPE_LP))
691 b43_write16(dev, 0x0514, 0x1A02);
692 b43_write16(dev, 0x0508, 0x0000);
693 b43_write16(dev, 0x050A, 0x0000);
694 b43_write16(dev, 0x054C, 0x0000);
695 b43_write16(dev, 0x056A, 0x0014);
696 b43_write16(dev, 0x0568, 0x0826);
697 b43_write16(dev, 0x0500, 0x0000);
698 if (!pa_on && (phy->type == B43_PHYTYPE_N)) {
699 //SPEC TODO
700 }
701
702 switch (phy->type) {
703 case B43_PHYTYPE_N:
704 b43_write16(dev, 0x0502, 0x00D0);
705 break;
706 case B43_PHYTYPE_LP:
707 b43_write16(dev, 0x0502, 0x0050);
708 break;
709 default:
710 b43_write16(dev, 0x0502, 0x0030);
711 }
712
713 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
714 b43_radio_write16(dev, 0x0051, 0x0017);
715 for (i = 0x00; i < max_loop; i++) {
716 value = b43_read16(dev, 0x050E);
717 if (value & 0x0080)
718 break;
719 udelay(10);
720 }
721 for (i = 0x00; i < 0x0A; i++) {
722 value = b43_read16(dev, 0x050E);
723 if (value & 0x0400)
724 break;
725 udelay(10);
726 }
727 for (i = 0x00; i < 0x19; i++) {
728 value = b43_read16(dev, 0x0690);
729 if (!(value & 0x0100))
730 break;
731 udelay(10);
732 }
733 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
734 b43_radio_write16(dev, 0x0051, 0x0037);
735 }
736
737 static void key_write(struct b43_wldev *dev,
738 u8 index, u8 algorithm, const u8 *key)
739 {
740 unsigned int i;
741 u32 offset;
742 u16 value;
743 u16 kidx;
744
745 /* Key index/algo block */
746 kidx = b43_kidx_to_fw(dev, index);
747 value = ((kidx << 4) | algorithm);
748 b43_shm_write16(dev, B43_SHM_SHARED,
749 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
750
751 /* Write the key to the Key Table Pointer offset */
752 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
753 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
754 value = key[i];
755 value |= (u16) (key[i + 1]) << 8;
756 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
757 }
758 }
759
760 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
761 {
762 u32 addrtmp[2] = { 0, 0, };
763 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
764
765 if (b43_new_kidx_api(dev))
766 pairwise_keys_start = B43_NR_GROUP_KEYS;
767
768 B43_WARN_ON(index < pairwise_keys_start);
769 /* We have four default TX keys and possibly four default RX keys.
770 * Physical mac 0 is mapped to physical key 4 or 8, depending
771 * on the firmware version.
772 * So we must adjust the index here.
773 */
774 index -= pairwise_keys_start;
775 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
776
777 if (addr) {
778 addrtmp[0] = addr[0];
779 addrtmp[0] |= ((u32) (addr[1]) << 8);
780 addrtmp[0] |= ((u32) (addr[2]) << 16);
781 addrtmp[0] |= ((u32) (addr[3]) << 24);
782 addrtmp[1] = addr[4];
783 addrtmp[1] |= ((u32) (addr[5]) << 8);
784 }
785
786 /* Receive match transmitter address (RCMTA) mechanism */
787 b43_shm_write32(dev, B43_SHM_RCMTA,
788 (index * 2) + 0, addrtmp[0]);
789 b43_shm_write16(dev, B43_SHM_RCMTA,
790 (index * 2) + 1, addrtmp[1]);
791 }
792
793 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
794 * When a packet is received, the iv32 is checked.
795 * - if it doesn't the packet is returned without modification (and software
796 * decryption can be done). That's what happen when iv16 wrap.
797 * - if it does, the rc4 key is computed, and decryption is tried.
798 * Either it will success and B43_RX_MAC_DEC is returned,
799 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
800 * and the packet is not usable (it got modified by the ucode).
801 * So in order to never have B43_RX_MAC_DECERR, we should provide
802 * a iv32 and phase1key that match. Because we drop packets in case of
803 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
804 * packets will be lost without higher layer knowing (ie no resync possible
805 * until next wrap).
806 *
807 * NOTE : this should support 50 key like RCMTA because
808 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
809 */
810 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
811 u16 *phase1key)
812 {
813 unsigned int i;
814 u32 offset;
815 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
816
817 if (!modparam_hwtkip)
818 return;
819
820 if (b43_new_kidx_api(dev))
821 pairwise_keys_start = B43_NR_GROUP_KEYS;
822
823 B43_WARN_ON(index < pairwise_keys_start);
824 /* We have four default TX keys and possibly four default RX keys.
825 * Physical mac 0 is mapped to physical key 4 or 8, depending
826 * on the firmware version.
827 * So we must adjust the index here.
828 */
829 index -= pairwise_keys_start;
830 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
831
832 if (b43_debug(dev, B43_DBG_KEYS)) {
833 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
834 index, iv32);
835 }
836 /* Write the key to the RX tkip shared mem */
837 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
838 for (i = 0; i < 10; i += 2) {
839 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
840 phase1key ? phase1key[i / 2] : 0);
841 }
842 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
843 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
844 }
845
846 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
847 struct ieee80211_vif *vif,
848 struct ieee80211_key_conf *keyconf,
849 struct ieee80211_sta *sta,
850 u32 iv32, u16 *phase1key)
851 {
852 struct b43_wl *wl = hw_to_b43_wl(hw);
853 struct b43_wldev *dev;
854 int index = keyconf->hw_key_idx;
855
856 if (B43_WARN_ON(!modparam_hwtkip))
857 return;
858
859 /* This is only called from the RX path through mac80211, where
860 * our mutex is already locked. */
861 B43_WARN_ON(!mutex_is_locked(&wl->mutex));
862 dev = wl->current_dev;
863 B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
864
865 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
866
867 rx_tkip_phase1_write(dev, index, iv32, phase1key);
868 /* only pairwise TKIP keys are supported right now */
869 if (WARN_ON(!sta))
870 return;
871 keymac_write(dev, index, sta->addr);
872 }
873
874 static void do_key_write(struct b43_wldev *dev,
875 u8 index, u8 algorithm,
876 const u8 *key, size_t key_len, const u8 *mac_addr)
877 {
878 u8 buf[B43_SEC_KEYSIZE] = { 0, };
879 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
880
881 if (b43_new_kidx_api(dev))
882 pairwise_keys_start = B43_NR_GROUP_KEYS;
883
884 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
885 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
886
887 if (index >= pairwise_keys_start)
888 keymac_write(dev, index, NULL); /* First zero out mac. */
889 if (algorithm == B43_SEC_ALGO_TKIP) {
890 /*
891 * We should provide an initial iv32, phase1key pair.
892 * We could start with iv32=0 and compute the corresponding
893 * phase1key, but this means calling ieee80211_get_tkip_key
894 * with a fake skb (or export other tkip function).
895 * Because we are lazy we hope iv32 won't start with
896 * 0xffffffff and let's b43_op_update_tkip_key provide a
897 * correct pair.
898 */
899 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
900 } else if (index >= pairwise_keys_start) /* clear it */
901 rx_tkip_phase1_write(dev, index, 0, NULL);
902 if (key)
903 memcpy(buf, key, key_len);
904 key_write(dev, index, algorithm, buf);
905 if (index >= pairwise_keys_start)
906 keymac_write(dev, index, mac_addr);
907
908 dev->key[index].algorithm = algorithm;
909 }
910
911 static int b43_key_write(struct b43_wldev *dev,
912 int index, u8 algorithm,
913 const u8 *key, size_t key_len,
914 const u8 *mac_addr,
915 struct ieee80211_key_conf *keyconf)
916 {
917 int i;
918 int pairwise_keys_start;
919
920 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
921 * - Temporal Encryption Key (128 bits)
922 * - Temporal Authenticator Tx MIC Key (64 bits)
923 * - Temporal Authenticator Rx MIC Key (64 bits)
924 *
925 * Hardware only store TEK
926 */
927 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
928 key_len = 16;
929 if (key_len > B43_SEC_KEYSIZE)
930 return -EINVAL;
931 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
932 /* Check that we don't already have this key. */
933 B43_WARN_ON(dev->key[i].keyconf == keyconf);
934 }
935 if (index < 0) {
936 /* Pairwise key. Get an empty slot for the key. */
937 if (b43_new_kidx_api(dev))
938 pairwise_keys_start = B43_NR_GROUP_KEYS;
939 else
940 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
941 for (i = pairwise_keys_start;
942 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
943 i++) {
944 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
945 if (!dev->key[i].keyconf) {
946 /* found empty */
947 index = i;
948 break;
949 }
950 }
951 if (index < 0) {
952 b43warn(dev->wl, "Out of hardware key memory\n");
953 return -ENOSPC;
954 }
955 } else
956 B43_WARN_ON(index > 3);
957
958 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
959 if ((index <= 3) && !b43_new_kidx_api(dev)) {
960 /* Default RX key */
961 B43_WARN_ON(mac_addr);
962 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
963 }
964 keyconf->hw_key_idx = index;
965 dev->key[index].keyconf = keyconf;
966
967 return 0;
968 }
969
970 static int b43_key_clear(struct b43_wldev *dev, int index)
971 {
972 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
973 return -EINVAL;
974 do_key_write(dev, index, B43_SEC_ALGO_NONE,
975 NULL, B43_SEC_KEYSIZE, NULL);
976 if ((index <= 3) && !b43_new_kidx_api(dev)) {
977 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
978 NULL, B43_SEC_KEYSIZE, NULL);
979 }
980 dev->key[index].keyconf = NULL;
981
982 return 0;
983 }
984
985 static void b43_clear_keys(struct b43_wldev *dev)
986 {
987 int i, count;
988
989 if (b43_new_kidx_api(dev))
990 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
991 else
992 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
993 for (i = 0; i < count; i++)
994 b43_key_clear(dev, i);
995 }
996
997 static void b43_dump_keymemory(struct b43_wldev *dev)
998 {
999 unsigned int i, index, count, offset, pairwise_keys_start;
1000 u8 mac[ETH_ALEN];
1001 u16 algo;
1002 u32 rcmta0;
1003 u16 rcmta1;
1004 u64 hf;
1005 struct b43_key *key;
1006
1007 if (!b43_debug(dev, B43_DBG_KEYS))
1008 return;
1009
1010 hf = b43_hf_read(dev);
1011 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1012 !!(hf & B43_HF_USEDEFKEYS));
1013 if (b43_new_kidx_api(dev)) {
1014 pairwise_keys_start = B43_NR_GROUP_KEYS;
1015 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1016 } else {
1017 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1018 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1019 }
1020 for (index = 0; index < count; index++) {
1021 key = &(dev->key[index]);
1022 printk(KERN_DEBUG "Key slot %02u: %s",
1023 index, (key->keyconf == NULL) ? " " : "*");
1024 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1025 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1026 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1027 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1028 }
1029
1030 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1031 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1032 printk(" Algo: %04X/%02X", algo, key->algorithm);
1033
1034 if (index >= pairwise_keys_start) {
1035 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1036 printk(" TKIP: ");
1037 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1038 for (i = 0; i < 14; i += 2) {
1039 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1040 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1041 }
1042 }
1043 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1044 ((index - pairwise_keys_start) * 2) + 0);
1045 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1046 ((index - pairwise_keys_start) * 2) + 1);
1047 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1048 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1049 printk(" MAC: %pM", mac);
1050 } else
1051 printk(" DEFAULT KEY");
1052 printk("\n");
1053 }
1054 }
1055
1056 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1057 {
1058 u32 macctl;
1059 u16 ucstat;
1060 bool hwps;
1061 bool awake;
1062 int i;
1063
1064 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1065 (ps_flags & B43_PS_DISABLED));
1066 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1067
1068 if (ps_flags & B43_PS_ENABLED) {
1069 hwps = 1;
1070 } else if (ps_flags & B43_PS_DISABLED) {
1071 hwps = 0;
1072 } else {
1073 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1074 // and thus is not an AP and we are associated, set bit 25
1075 }
1076 if (ps_flags & B43_PS_AWAKE) {
1077 awake = 1;
1078 } else if (ps_flags & B43_PS_ASLEEP) {
1079 awake = 0;
1080 } else {
1081 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1082 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1083 // successful, set bit26
1084 }
1085
1086 /* FIXME: For now we force awake-on and hwps-off */
1087 hwps = 0;
1088 awake = 1;
1089
1090 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1091 if (hwps)
1092 macctl |= B43_MACCTL_HWPS;
1093 else
1094 macctl &= ~B43_MACCTL_HWPS;
1095 if (awake)
1096 macctl |= B43_MACCTL_AWAKE;
1097 else
1098 macctl &= ~B43_MACCTL_AWAKE;
1099 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1100 /* Commit write */
1101 b43_read32(dev, B43_MMIO_MACCTL);
1102 if (awake && dev->dev->id.revision >= 5) {
1103 /* Wait for the microcode to wake up. */
1104 for (i = 0; i < 100; i++) {
1105 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1106 B43_SHM_SH_UCODESTAT);
1107 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1108 break;
1109 udelay(10);
1110 }
1111 }
1112 }
1113
1114 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1115 {
1116 u32 tmslow;
1117 u32 macctl;
1118
1119 flags |= B43_TMSLOW_PHYCLKEN;
1120 flags |= B43_TMSLOW_PHYRESET;
1121 ssb_device_enable(dev->dev, flags);
1122 msleep(2); /* Wait for the PLL to turn on. */
1123
1124 /* Now take the PHY out of Reset again */
1125 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1126 tmslow |= SSB_TMSLOW_FGC;
1127 tmslow &= ~B43_TMSLOW_PHYRESET;
1128 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1129 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1130 msleep(1);
1131 tmslow &= ~SSB_TMSLOW_FGC;
1132 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1133 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1134 msleep(1);
1135
1136 /* Turn Analog ON, but only if we already know the PHY-type.
1137 * This protects against very early setup where we don't know the
1138 * PHY-type, yet. wireless_core_reset will be called once again later,
1139 * when we know the PHY-type. */
1140 if (dev->phy.ops)
1141 dev->phy.ops->switch_analog(dev, 1);
1142
1143 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1144 macctl &= ~B43_MACCTL_GMODE;
1145 if (flags & B43_TMSLOW_GMODE)
1146 macctl |= B43_MACCTL_GMODE;
1147 macctl |= B43_MACCTL_IHR_ENABLED;
1148 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1149 }
1150
1151 static void handle_irq_transmit_status(struct b43_wldev *dev)
1152 {
1153 u32 v0, v1;
1154 u16 tmp;
1155 struct b43_txstatus stat;
1156
1157 while (1) {
1158 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1159 if (!(v0 & 0x00000001))
1160 break;
1161 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1162
1163 stat.cookie = (v0 >> 16);
1164 stat.seq = (v1 & 0x0000FFFF);
1165 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1166 tmp = (v0 & 0x0000FFFF);
1167 stat.frame_count = ((tmp & 0xF000) >> 12);
1168 stat.rts_count = ((tmp & 0x0F00) >> 8);
1169 stat.supp_reason = ((tmp & 0x001C) >> 2);
1170 stat.pm_indicated = !!(tmp & 0x0080);
1171 stat.intermediate = !!(tmp & 0x0040);
1172 stat.for_ampdu = !!(tmp & 0x0020);
1173 stat.acked = !!(tmp & 0x0002);
1174
1175 b43_handle_txstatus(dev, &stat);
1176 }
1177 }
1178
1179 static void drain_txstatus_queue(struct b43_wldev *dev)
1180 {
1181 u32 dummy;
1182
1183 if (dev->dev->id.revision < 5)
1184 return;
1185 /* Read all entries from the microcode TXstatus FIFO
1186 * and throw them away.
1187 */
1188 while (1) {
1189 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1190 if (!(dummy & 0x00000001))
1191 break;
1192 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1193 }
1194 }
1195
1196 static u32 b43_jssi_read(struct b43_wldev *dev)
1197 {
1198 u32 val = 0;
1199
1200 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1201 val <<= 16;
1202 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1203
1204 return val;
1205 }
1206
1207 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1208 {
1209 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1210 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1211 }
1212
1213 static void b43_generate_noise_sample(struct b43_wldev *dev)
1214 {
1215 b43_jssi_write(dev, 0x7F7F7F7F);
1216 b43_write32(dev, B43_MMIO_MACCMD,
1217 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1218 }
1219
1220 static void b43_calculate_link_quality(struct b43_wldev *dev)
1221 {
1222 /* Top half of Link Quality calculation. */
1223
1224 if (dev->phy.type != B43_PHYTYPE_G)
1225 return;
1226 if (dev->noisecalc.calculation_running)
1227 return;
1228 dev->noisecalc.calculation_running = 1;
1229 dev->noisecalc.nr_samples = 0;
1230
1231 b43_generate_noise_sample(dev);
1232 }
1233
1234 static void handle_irq_noise(struct b43_wldev *dev)
1235 {
1236 struct b43_phy_g *phy = dev->phy.g;
1237 u16 tmp;
1238 u8 noise[4];
1239 u8 i, j;
1240 s32 average;
1241
1242 /* Bottom half of Link Quality calculation. */
1243
1244 if (dev->phy.type != B43_PHYTYPE_G)
1245 return;
1246
1247 /* Possible race condition: It might be possible that the user
1248 * changed to a different channel in the meantime since we
1249 * started the calculation. We ignore that fact, since it's
1250 * not really that much of a problem. The background noise is
1251 * an estimation only anyway. Slightly wrong results will get damped
1252 * by the averaging of the 8 sample rounds. Additionally the
1253 * value is shortlived. So it will be replaced by the next noise
1254 * calculation round soon. */
1255
1256 B43_WARN_ON(!dev->noisecalc.calculation_running);
1257 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1258 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1259 noise[2] == 0x7F || noise[3] == 0x7F)
1260 goto generate_new;
1261
1262 /* Get the noise samples. */
1263 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1264 i = dev->noisecalc.nr_samples;
1265 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1266 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1267 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1268 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1269 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1270 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1271 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1272 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1273 dev->noisecalc.nr_samples++;
1274 if (dev->noisecalc.nr_samples == 8) {
1275 /* Calculate the Link Quality by the noise samples. */
1276 average = 0;
1277 for (i = 0; i < 8; i++) {
1278 for (j = 0; j < 4; j++)
1279 average += dev->noisecalc.samples[i][j];
1280 }
1281 average /= (8 * 4);
1282 average *= 125;
1283 average += 64;
1284 average /= 128;
1285 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1286 tmp = (tmp / 128) & 0x1F;
1287 if (tmp >= 8)
1288 average += 2;
1289 else
1290 average -= 25;
1291 if (tmp == 8)
1292 average -= 72;
1293 else
1294 average -= 48;
1295
1296 dev->stats.link_noise = average;
1297 dev->noisecalc.calculation_running = 0;
1298 return;
1299 }
1300 generate_new:
1301 b43_generate_noise_sample(dev);
1302 }
1303
1304 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1305 {
1306 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1307 ///TODO: PS TBTT
1308 } else {
1309 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1310 b43_power_saving_ctl_bits(dev, 0);
1311 }
1312 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1313 dev->dfq_valid = 1;
1314 }
1315
1316 static void handle_irq_atim_end(struct b43_wldev *dev)
1317 {
1318 if (dev->dfq_valid) {
1319 b43_write32(dev, B43_MMIO_MACCMD,
1320 b43_read32(dev, B43_MMIO_MACCMD)
1321 | B43_MACCMD_DFQ_VALID);
1322 dev->dfq_valid = 0;
1323 }
1324 }
1325
1326 static void handle_irq_pmq(struct b43_wldev *dev)
1327 {
1328 u32 tmp;
1329
1330 //TODO: AP mode.
1331
1332 while (1) {
1333 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1334 if (!(tmp & 0x00000008))
1335 break;
1336 }
1337 /* 16bit write is odd, but correct. */
1338 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1339 }
1340
1341 static void b43_write_template_common(struct b43_wldev *dev,
1342 const u8 *data, u16 size,
1343 u16 ram_offset,
1344 u16 shm_size_offset, u8 rate)
1345 {
1346 u32 i, tmp;
1347 struct b43_plcp_hdr4 plcp;
1348
1349 plcp.data = 0;
1350 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1351 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1352 ram_offset += sizeof(u32);
1353 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1354 * So leave the first two bytes of the next write blank.
1355 */
1356 tmp = (u32) (data[0]) << 16;
1357 tmp |= (u32) (data[1]) << 24;
1358 b43_ram_write(dev, ram_offset, tmp);
1359 ram_offset += sizeof(u32);
1360 for (i = 2; i < size; i += sizeof(u32)) {
1361 tmp = (u32) (data[i + 0]);
1362 if (i + 1 < size)
1363 tmp |= (u32) (data[i + 1]) << 8;
1364 if (i + 2 < size)
1365 tmp |= (u32) (data[i + 2]) << 16;
1366 if (i + 3 < size)
1367 tmp |= (u32) (data[i + 3]) << 24;
1368 b43_ram_write(dev, ram_offset + i - 2, tmp);
1369 }
1370 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1371 size + sizeof(struct b43_plcp_hdr6));
1372 }
1373
1374 /* Check if the use of the antenna that ieee80211 told us to
1375 * use is possible. This will fall back to DEFAULT.
1376 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1377 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1378 u8 antenna_nr)
1379 {
1380 u8 antenna_mask;
1381
1382 if (antenna_nr == 0) {
1383 /* Zero means "use default antenna". That's always OK. */
1384 return 0;
1385 }
1386
1387 /* Get the mask of available antennas. */
1388 if (dev->phy.gmode)
1389 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1390 else
1391 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1392
1393 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1394 /* This antenna is not available. Fall back to default. */
1395 return 0;
1396 }
1397
1398 return antenna_nr;
1399 }
1400
1401 /* Convert a b43 antenna number value to the PHY TX control value. */
1402 static u16 b43_antenna_to_phyctl(int antenna)
1403 {
1404 switch (antenna) {
1405 case B43_ANTENNA0:
1406 return B43_TXH_PHY_ANT0;
1407 case B43_ANTENNA1:
1408 return B43_TXH_PHY_ANT1;
1409 case B43_ANTENNA2:
1410 return B43_TXH_PHY_ANT2;
1411 case B43_ANTENNA3:
1412 return B43_TXH_PHY_ANT3;
1413 case B43_ANTENNA_AUTO0:
1414 case B43_ANTENNA_AUTO1:
1415 return B43_TXH_PHY_ANT01AUTO;
1416 }
1417 B43_WARN_ON(1);
1418 return 0;
1419 }
1420
1421 static void b43_write_beacon_template(struct b43_wldev *dev,
1422 u16 ram_offset,
1423 u16 shm_size_offset)
1424 {
1425 unsigned int i, len, variable_len;
1426 const struct ieee80211_mgmt *bcn;
1427 const u8 *ie;
1428 bool tim_found = 0;
1429 unsigned int rate;
1430 u16 ctl;
1431 int antenna;
1432 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1433
1434 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1435 len = min((size_t) dev->wl->current_beacon->len,
1436 0x200 - sizeof(struct b43_plcp_hdr6));
1437 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1438
1439 b43_write_template_common(dev, (const u8 *)bcn,
1440 len, ram_offset, shm_size_offset, rate);
1441
1442 /* Write the PHY TX control parameters. */
1443 antenna = B43_ANTENNA_DEFAULT;
1444 antenna = b43_antenna_to_phyctl(antenna);
1445 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1446 /* We can't send beacons with short preamble. Would get PHY errors. */
1447 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1448 ctl &= ~B43_TXH_PHY_ANT;
1449 ctl &= ~B43_TXH_PHY_ENC;
1450 ctl |= antenna;
1451 if (b43_is_cck_rate(rate))
1452 ctl |= B43_TXH_PHY_ENC_CCK;
1453 else
1454 ctl |= B43_TXH_PHY_ENC_OFDM;
1455 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1456
1457 /* Find the position of the TIM and the DTIM_period value
1458 * and write them to SHM. */
1459 ie = bcn->u.beacon.variable;
1460 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1461 for (i = 0; i < variable_len - 2; ) {
1462 uint8_t ie_id, ie_len;
1463
1464 ie_id = ie[i];
1465 ie_len = ie[i + 1];
1466 if (ie_id == 5) {
1467 u16 tim_position;
1468 u16 dtim_period;
1469 /* This is the TIM Information Element */
1470
1471 /* Check whether the ie_len is in the beacon data range. */
1472 if (variable_len < ie_len + 2 + i)
1473 break;
1474 /* A valid TIM is at least 4 bytes long. */
1475 if (ie_len < 4)
1476 break;
1477 tim_found = 1;
1478
1479 tim_position = sizeof(struct b43_plcp_hdr6);
1480 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1481 tim_position += i;
1482
1483 dtim_period = ie[i + 3];
1484
1485 b43_shm_write16(dev, B43_SHM_SHARED,
1486 B43_SHM_SH_TIMBPOS, tim_position);
1487 b43_shm_write16(dev, B43_SHM_SHARED,
1488 B43_SHM_SH_DTIMPER, dtim_period);
1489 break;
1490 }
1491 i += ie_len + 2;
1492 }
1493 if (!tim_found) {
1494 /*
1495 * If ucode wants to modify TIM do it behind the beacon, this
1496 * will happen, for example, when doing mesh networking.
1497 */
1498 b43_shm_write16(dev, B43_SHM_SHARED,
1499 B43_SHM_SH_TIMBPOS,
1500 len + sizeof(struct b43_plcp_hdr6));
1501 b43_shm_write16(dev, B43_SHM_SHARED,
1502 B43_SHM_SH_DTIMPER, 0);
1503 }
1504 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1505 }
1506
1507 static void b43_upload_beacon0(struct b43_wldev *dev)
1508 {
1509 struct b43_wl *wl = dev->wl;
1510
1511 if (wl->beacon0_uploaded)
1512 return;
1513 b43_write_beacon_template(dev, 0x68, 0x18);
1514 wl->beacon0_uploaded = 1;
1515 }
1516
1517 static void b43_upload_beacon1(struct b43_wldev *dev)
1518 {
1519 struct b43_wl *wl = dev->wl;
1520
1521 if (wl->beacon1_uploaded)
1522 return;
1523 b43_write_beacon_template(dev, 0x468, 0x1A);
1524 wl->beacon1_uploaded = 1;
1525 }
1526
1527 static void handle_irq_beacon(struct b43_wldev *dev)
1528 {
1529 struct b43_wl *wl = dev->wl;
1530 u32 cmd, beacon0_valid, beacon1_valid;
1531
1532 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1533 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1534 return;
1535
1536 /* This is the bottom half of the asynchronous beacon update. */
1537
1538 /* Ignore interrupt in the future. */
1539 dev->irq_mask &= ~B43_IRQ_BEACON;
1540
1541 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1542 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1543 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1544
1545 /* Schedule interrupt manually, if busy. */
1546 if (beacon0_valid && beacon1_valid) {
1547 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1548 dev->irq_mask |= B43_IRQ_BEACON;
1549 return;
1550 }
1551
1552 if (unlikely(wl->beacon_templates_virgin)) {
1553 /* We never uploaded a beacon before.
1554 * Upload both templates now, but only mark one valid. */
1555 wl->beacon_templates_virgin = 0;
1556 b43_upload_beacon0(dev);
1557 b43_upload_beacon1(dev);
1558 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1559 cmd |= B43_MACCMD_BEACON0_VALID;
1560 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1561 } else {
1562 if (!beacon0_valid) {
1563 b43_upload_beacon0(dev);
1564 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1565 cmd |= B43_MACCMD_BEACON0_VALID;
1566 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1567 } else if (!beacon1_valid) {
1568 b43_upload_beacon1(dev);
1569 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1570 cmd |= B43_MACCMD_BEACON1_VALID;
1571 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1572 }
1573 }
1574 }
1575
1576 static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1577 {
1578 u32 old_irq_mask = dev->irq_mask;
1579
1580 /* update beacon right away or defer to irq */
1581 handle_irq_beacon(dev);
1582 if (old_irq_mask != dev->irq_mask) {
1583 /* The handler updated the IRQ mask. */
1584 B43_WARN_ON(!dev->irq_mask);
1585 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1586 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1587 } else {
1588 /* Device interrupts are currently disabled. That means
1589 * we just ran the hardirq handler and scheduled the
1590 * IRQ thread. The thread will write the IRQ mask when
1591 * it finished, so there's nothing to do here. Writing
1592 * the mask _here_ would incorrectly re-enable IRQs. */
1593 }
1594 }
1595 }
1596
1597 static void b43_beacon_update_trigger_work(struct work_struct *work)
1598 {
1599 struct b43_wl *wl = container_of(work, struct b43_wl,
1600 beacon_update_trigger);
1601 struct b43_wldev *dev;
1602
1603 mutex_lock(&wl->mutex);
1604 dev = wl->current_dev;
1605 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1606 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
1607 /* wl->mutex is enough. */
1608 b43_do_beacon_update_trigger_work(dev);
1609 mmiowb();
1610 } else {
1611 spin_lock_irq(&wl->hardirq_lock);
1612 b43_do_beacon_update_trigger_work(dev);
1613 mmiowb();
1614 spin_unlock_irq(&wl->hardirq_lock);
1615 }
1616 }
1617 mutex_unlock(&wl->mutex);
1618 }
1619
1620 /* Asynchronously update the packet templates in template RAM.
1621 * Locking: Requires wl->mutex to be locked. */
1622 static void b43_update_templates(struct b43_wl *wl)
1623 {
1624 struct sk_buff *beacon;
1625
1626 /* This is the top half of the ansynchronous beacon update.
1627 * The bottom half is the beacon IRQ.
1628 * Beacon update must be asynchronous to avoid sending an
1629 * invalid beacon. This can happen for example, if the firmware
1630 * transmits a beacon while we are updating it. */
1631
1632 /* We could modify the existing beacon and set the aid bit in
1633 * the TIM field, but that would probably require resizing and
1634 * moving of data within the beacon template.
1635 * Simply request a new beacon and let mac80211 do the hard work. */
1636 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1637 if (unlikely(!beacon))
1638 return;
1639
1640 if (wl->current_beacon)
1641 dev_kfree_skb_any(wl->current_beacon);
1642 wl->current_beacon = beacon;
1643 wl->beacon0_uploaded = 0;
1644 wl->beacon1_uploaded = 0;
1645 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1646 }
1647
1648 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1649 {
1650 b43_time_lock(dev);
1651 if (dev->dev->id.revision >= 3) {
1652 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1653 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1654 } else {
1655 b43_write16(dev, 0x606, (beacon_int >> 6));
1656 b43_write16(dev, 0x610, beacon_int);
1657 }
1658 b43_time_unlock(dev);
1659 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1660 }
1661
1662 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1663 {
1664 u16 reason;
1665
1666 /* Read the register that contains the reason code for the panic. */
1667 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1668 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1669
1670 switch (reason) {
1671 default:
1672 b43dbg(dev->wl, "The panic reason is unknown.\n");
1673 /* fallthrough */
1674 case B43_FWPANIC_DIE:
1675 /* Do not restart the controller or firmware.
1676 * The device is nonfunctional from now on.
1677 * Restarting would result in this panic to trigger again,
1678 * so we avoid that recursion. */
1679 break;
1680 case B43_FWPANIC_RESTART:
1681 b43_controller_restart(dev, "Microcode panic");
1682 break;
1683 }
1684 }
1685
1686 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1687 {
1688 unsigned int i, cnt;
1689 u16 reason, marker_id, marker_line;
1690 __le16 *buf;
1691
1692 /* The proprietary firmware doesn't have this IRQ. */
1693 if (!dev->fw.opensource)
1694 return;
1695
1696 /* Read the register that contains the reason code for this IRQ. */
1697 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1698
1699 switch (reason) {
1700 case B43_DEBUGIRQ_PANIC:
1701 b43_handle_firmware_panic(dev);
1702 break;
1703 case B43_DEBUGIRQ_DUMP_SHM:
1704 if (!B43_DEBUG)
1705 break; /* Only with driver debugging enabled. */
1706 buf = kmalloc(4096, GFP_ATOMIC);
1707 if (!buf) {
1708 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1709 goto out;
1710 }
1711 for (i = 0; i < 4096; i += 2) {
1712 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1713 buf[i / 2] = cpu_to_le16(tmp);
1714 }
1715 b43info(dev->wl, "Shared memory dump:\n");
1716 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1717 16, 2, buf, 4096, 1);
1718 kfree(buf);
1719 break;
1720 case B43_DEBUGIRQ_DUMP_REGS:
1721 if (!B43_DEBUG)
1722 break; /* Only with driver debugging enabled. */
1723 b43info(dev->wl, "Microcode register dump:\n");
1724 for (i = 0, cnt = 0; i < 64; i++) {
1725 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1726 if (cnt == 0)
1727 printk(KERN_INFO);
1728 printk("r%02u: 0x%04X ", i, tmp);
1729 cnt++;
1730 if (cnt == 6) {
1731 printk("\n");
1732 cnt = 0;
1733 }
1734 }
1735 printk("\n");
1736 break;
1737 case B43_DEBUGIRQ_MARKER:
1738 if (!B43_DEBUG)
1739 break; /* Only with driver debugging enabled. */
1740 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1741 B43_MARKER_ID_REG);
1742 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1743 B43_MARKER_LINE_REG);
1744 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1745 "at line number %u\n",
1746 marker_id, marker_line);
1747 break;
1748 default:
1749 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1750 reason);
1751 }
1752 out:
1753 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1754 b43_shm_write16(dev, B43_SHM_SCRATCH,
1755 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1756 }
1757
1758 static void b43_do_interrupt_thread(struct b43_wldev *dev)
1759 {
1760 u32 reason;
1761 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1762 u32 merged_dma_reason = 0;
1763 int i;
1764
1765 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1766 return;
1767
1768 reason = dev->irq_reason;
1769 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1770 dma_reason[i] = dev->dma_reason[i];
1771 merged_dma_reason |= dma_reason[i];
1772 }
1773
1774 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1775 b43err(dev->wl, "MAC transmission error\n");
1776
1777 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1778 b43err(dev->wl, "PHY transmission error\n");
1779 rmb();
1780 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1781 atomic_set(&dev->phy.txerr_cnt,
1782 B43_PHY_TX_BADNESS_LIMIT);
1783 b43err(dev->wl, "Too many PHY TX errors, "
1784 "restarting the controller\n");
1785 b43_controller_restart(dev, "PHY TX errors");
1786 }
1787 }
1788
1789 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1790 B43_DMAIRQ_NONFATALMASK))) {
1791 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1792 b43err(dev->wl, "Fatal DMA error: "
1793 "0x%08X, 0x%08X, 0x%08X, "
1794 "0x%08X, 0x%08X, 0x%08X\n",
1795 dma_reason[0], dma_reason[1],
1796 dma_reason[2], dma_reason[3],
1797 dma_reason[4], dma_reason[5]);
1798 b43err(dev->wl, "This device does not support DMA "
1799 "on your system. Please use PIO instead.\n");
1800 b43err(dev->wl, "Unload the b43 module and reload "
1801 "with 'pio=1'\n");
1802 return;
1803 }
1804 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1805 b43err(dev->wl, "DMA error: "
1806 "0x%08X, 0x%08X, 0x%08X, "
1807 "0x%08X, 0x%08X, 0x%08X\n",
1808 dma_reason[0], dma_reason[1],
1809 dma_reason[2], dma_reason[3],
1810 dma_reason[4], dma_reason[5]);
1811 }
1812 }
1813
1814 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1815 handle_irq_ucode_debug(dev);
1816 if (reason & B43_IRQ_TBTT_INDI)
1817 handle_irq_tbtt_indication(dev);
1818 if (reason & B43_IRQ_ATIM_END)
1819 handle_irq_atim_end(dev);
1820 if (reason & B43_IRQ_BEACON)
1821 handle_irq_beacon(dev);
1822 if (reason & B43_IRQ_PMQ)
1823 handle_irq_pmq(dev);
1824 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1825 ;/* TODO */
1826 if (reason & B43_IRQ_NOISESAMPLE_OK)
1827 handle_irq_noise(dev);
1828
1829 /* Check the DMA reason registers for received data. */
1830 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1831 if (b43_using_pio_transfers(dev))
1832 b43_pio_rx(dev->pio.rx_queue);
1833 else
1834 b43_dma_rx(dev->dma.rx_ring);
1835 }
1836 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1837 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1838 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1839 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1840 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1841
1842 if (reason & B43_IRQ_TX_OK)
1843 handle_irq_transmit_status(dev);
1844
1845 /* Re-enable interrupts on the device by restoring the current interrupt mask. */
1846 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1847
1848 #if B43_DEBUG
1849 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
1850 dev->irq_count++;
1851 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
1852 if (reason & (1 << i))
1853 dev->irq_bit_count[i]++;
1854 }
1855 }
1856 #endif
1857 }
1858
1859 /* Interrupt thread handler. Handles device interrupts in thread context. */
1860 static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
1861 {
1862 struct b43_wldev *dev = dev_id;
1863
1864 mutex_lock(&dev->wl->mutex);
1865 b43_do_interrupt_thread(dev);
1866 mmiowb();
1867 mutex_unlock(&dev->wl->mutex);
1868
1869 return IRQ_HANDLED;
1870 }
1871
1872 static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
1873 {
1874 u32 reason;
1875
1876 /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
1877 * On SDIO, this runs under wl->mutex. */
1878
1879 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1880 if (reason == 0xffffffff) /* shared IRQ */
1881 return IRQ_NONE;
1882 reason &= dev->irq_mask;
1883 if (!reason)
1884 return IRQ_HANDLED;
1885
1886 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1887 & 0x0001DC00;
1888 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1889 & 0x0000DC00;
1890 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1891 & 0x0000DC00;
1892 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1893 & 0x0001DC00;
1894 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1895 & 0x0000DC00;
1896 /* Unused ring
1897 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1898 & 0x0000DC00;
1899 */
1900
1901 /* ACK the interrupt. */
1902 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1903 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1904 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1905 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1906 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1907 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1908 /* Unused ring
1909 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1910 */
1911
1912 /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
1913 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
1914 /* Save the reason bitmasks for the IRQ thread handler. */
1915 dev->irq_reason = reason;
1916
1917 return IRQ_WAKE_THREAD;
1918 }
1919
1920 /* Interrupt handler top-half. This runs with interrupts disabled. */
1921 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1922 {
1923 struct b43_wldev *dev = dev_id;
1924 irqreturn_t ret;
1925
1926 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
1927 return IRQ_NONE;
1928
1929 spin_lock(&dev->wl->hardirq_lock);
1930 ret = b43_do_interrupt(dev);
1931 mmiowb();
1932 spin_unlock(&dev->wl->hardirq_lock);
1933
1934 return ret;
1935 }
1936
1937 /* SDIO interrupt handler. This runs in process context. */
1938 static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
1939 {
1940 struct b43_wl *wl = dev->wl;
1941 irqreturn_t ret;
1942
1943 mutex_lock(&wl->mutex);
1944
1945 ret = b43_do_interrupt(dev);
1946 if (ret == IRQ_WAKE_THREAD)
1947 b43_do_interrupt_thread(dev);
1948
1949 mutex_unlock(&wl->mutex);
1950 }
1951
1952 void b43_do_release_fw(struct b43_firmware_file *fw)
1953 {
1954 release_firmware(fw->data);
1955 fw->data = NULL;
1956 fw->filename = NULL;
1957 }
1958
1959 static void b43_release_firmware(struct b43_wldev *dev)
1960 {
1961 b43_do_release_fw(&dev->fw.ucode);
1962 b43_do_release_fw(&dev->fw.pcm);
1963 b43_do_release_fw(&dev->fw.initvals);
1964 b43_do_release_fw(&dev->fw.initvals_band);
1965 }
1966
1967 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1968 {
1969 const char text[] =
1970 "You must go to " \
1971 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
1972 "and download the correct firmware for this driver version. " \
1973 "Please carefully read all instructions on this website.\n";
1974
1975 if (error)
1976 b43err(wl, text);
1977 else
1978 b43warn(wl, text);
1979 }
1980
1981 int b43_do_request_fw(struct b43_request_fw_context *ctx,
1982 const char *name,
1983 struct b43_firmware_file *fw)
1984 {
1985 const struct firmware *blob;
1986 struct b43_fw_header *hdr;
1987 u32 size;
1988 int err;
1989
1990 if (!name) {
1991 /* Don't fetch anything. Free possibly cached firmware. */
1992 /* FIXME: We should probably keep it anyway, to save some headache
1993 * on suspend/resume with multiband devices. */
1994 b43_do_release_fw(fw);
1995 return 0;
1996 }
1997 if (fw->filename) {
1998 if ((fw->type == ctx->req_type) &&
1999 (strcmp(fw->filename, name) == 0))
2000 return 0; /* Already have this fw. */
2001 /* Free the cached firmware first. */
2002 /* FIXME: We should probably do this later after we successfully
2003 * got the new fw. This could reduce headache with multiband devices.
2004 * We could also redesign this to cache the firmware for all possible
2005 * bands all the time. */
2006 b43_do_release_fw(fw);
2007 }
2008
2009 switch (ctx->req_type) {
2010 case B43_FWTYPE_PROPRIETARY:
2011 snprintf(ctx->fwname, sizeof(ctx->fwname),
2012 "b43%s/%s.fw",
2013 modparam_fwpostfix, name);
2014 break;
2015 case B43_FWTYPE_OPENSOURCE:
2016 snprintf(ctx->fwname, sizeof(ctx->fwname),
2017 "b43-open%s/%s.fw",
2018 modparam_fwpostfix, name);
2019 break;
2020 default:
2021 B43_WARN_ON(1);
2022 return -ENOSYS;
2023 }
2024 err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
2025 if (err == -ENOENT) {
2026 snprintf(ctx->errors[ctx->req_type],
2027 sizeof(ctx->errors[ctx->req_type]),
2028 "Firmware file \"%s\" not found\n", ctx->fwname);
2029 return err;
2030 } else if (err) {
2031 snprintf(ctx->errors[ctx->req_type],
2032 sizeof(ctx->errors[ctx->req_type]),
2033 "Firmware file \"%s\" request failed (err=%d)\n",
2034 ctx->fwname, err);
2035 return err;
2036 }
2037 if (blob->size < sizeof(struct b43_fw_header))
2038 goto err_format;
2039 hdr = (struct b43_fw_header *)(blob->data);
2040 switch (hdr->type) {
2041 case B43_FW_TYPE_UCODE:
2042 case B43_FW_TYPE_PCM:
2043 size = be32_to_cpu(hdr->size);
2044 if (size != blob->size - sizeof(struct b43_fw_header))
2045 goto err_format;
2046 /* fallthrough */
2047 case B43_FW_TYPE_IV:
2048 if (hdr->ver != 1)
2049 goto err_format;
2050 break;
2051 default:
2052 goto err_format;
2053 }
2054
2055 fw->data = blob;
2056 fw->filename = name;
2057 fw->type = ctx->req_type;
2058
2059 return 0;
2060
2061 err_format:
2062 snprintf(ctx->errors[ctx->req_type],
2063 sizeof(ctx->errors[ctx->req_type]),
2064 "Firmware file \"%s\" format error.\n", ctx->fwname);
2065 release_firmware(blob);
2066
2067 return -EPROTO;
2068 }
2069
2070 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2071 {
2072 struct b43_wldev *dev = ctx->dev;
2073 struct b43_firmware *fw = &ctx->dev->fw;
2074 const u8 rev = ctx->dev->dev->id.revision;
2075 const char *filename;
2076 u32 tmshigh;
2077 int err;
2078
2079 /* Get microcode */
2080 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2081 if ((rev >= 5) && (rev <= 10))
2082 filename = "ucode5";
2083 else if ((rev >= 11) && (rev <= 12))
2084 filename = "ucode11";
2085 else if (rev == 13)
2086 filename = "ucode13";
2087 else if (rev == 14)
2088 filename = "ucode14";
2089 else if (rev >= 15)
2090 filename = "ucode15";
2091 else
2092 goto err_no_ucode;
2093 err = b43_do_request_fw(ctx, filename, &fw->ucode);
2094 if (err)
2095 goto err_load;
2096
2097 /* Get PCM code */
2098 if ((rev >= 5) && (rev <= 10))
2099 filename = "pcm5";
2100 else if (rev >= 11)
2101 filename = NULL;
2102 else
2103 goto err_no_pcm;
2104 fw->pcm_request_failed = 0;
2105 err = b43_do_request_fw(ctx, filename, &fw->pcm);
2106 if (err == -ENOENT) {
2107 /* We did not find a PCM file? Not fatal, but
2108 * core rev <= 10 must do without hwcrypto then. */
2109 fw->pcm_request_failed = 1;
2110 } else if (err)
2111 goto err_load;
2112
2113 /* Get initvals */
2114 switch (dev->phy.type) {
2115 case B43_PHYTYPE_A:
2116 if ((rev >= 5) && (rev <= 10)) {
2117 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2118 filename = "a0g1initvals5";
2119 else
2120 filename = "a0g0initvals5";
2121 } else
2122 goto err_no_initvals;
2123 break;
2124 case B43_PHYTYPE_G:
2125 if ((rev >= 5) && (rev <= 10))
2126 filename = "b0g0initvals5";
2127 else if (rev >= 13)
2128 filename = "b0g0initvals13";
2129 else
2130 goto err_no_initvals;
2131 break;
2132 case B43_PHYTYPE_N:
2133 if ((rev >= 11) && (rev <= 12))
2134 filename = "n0initvals11";
2135 else
2136 goto err_no_initvals;
2137 break;
2138 case B43_PHYTYPE_LP:
2139 if (rev == 13)
2140 filename = "lp0initvals13";
2141 else if (rev == 14)
2142 filename = "lp0initvals14";
2143 else if (rev >= 15)
2144 filename = "lp0initvals15";
2145 else
2146 goto err_no_initvals;
2147 break;
2148 default:
2149 goto err_no_initvals;
2150 }
2151 err = b43_do_request_fw(ctx, filename, &fw->initvals);
2152 if (err)
2153 goto err_load;
2154
2155 /* Get bandswitch initvals */
2156 switch (dev->phy.type) {
2157 case B43_PHYTYPE_A:
2158 if ((rev >= 5) && (rev <= 10)) {
2159 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2160 filename = "a0g1bsinitvals5";
2161 else
2162 filename = "a0g0bsinitvals5";
2163 } else if (rev >= 11)
2164 filename = NULL;
2165 else
2166 goto err_no_initvals;
2167 break;
2168 case B43_PHYTYPE_G:
2169 if ((rev >= 5) && (rev <= 10))
2170 filename = "b0g0bsinitvals5";
2171 else if (rev >= 11)
2172 filename = NULL;
2173 else
2174 goto err_no_initvals;
2175 break;
2176 case B43_PHYTYPE_N:
2177 if ((rev >= 11) && (rev <= 12))
2178 filename = "n0bsinitvals11";
2179 else
2180 goto err_no_initvals;
2181 break;
2182 case B43_PHYTYPE_LP:
2183 if (rev == 13)
2184 filename = "lp0bsinitvals13";
2185 else if (rev == 14)
2186 filename = "lp0bsinitvals14";
2187 else if (rev >= 15)
2188 filename = "lp0bsinitvals15";
2189 else
2190 goto err_no_initvals;
2191 break;
2192 default:
2193 goto err_no_initvals;
2194 }
2195 err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2196 if (err)
2197 goto err_load;
2198
2199 return 0;
2200
2201 err_no_ucode:
2202 err = ctx->fatal_failure = -EOPNOTSUPP;
2203 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2204 "is required for your device (wl-core rev %u)\n", rev);
2205 goto error;
2206
2207 err_no_pcm:
2208 err = ctx->fatal_failure = -EOPNOTSUPP;
2209 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2210 "is required for your device (wl-core rev %u)\n", rev);
2211 goto error;
2212
2213 err_no_initvals:
2214 err = ctx->fatal_failure = -EOPNOTSUPP;
2215 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2216 "is required for your device (wl-core rev %u)\n", rev);
2217 goto error;
2218
2219 err_load:
2220 /* We failed to load this firmware image. The error message
2221 * already is in ctx->errors. Return and let our caller decide
2222 * what to do. */
2223 goto error;
2224
2225 error:
2226 b43_release_firmware(dev);
2227 return err;
2228 }
2229
2230 static int b43_request_firmware(struct b43_wldev *dev)
2231 {
2232 struct b43_request_fw_context *ctx;
2233 unsigned int i;
2234 int err;
2235 const char *errmsg;
2236
2237 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2238 if (!ctx)
2239 return -ENOMEM;
2240 ctx->dev = dev;
2241
2242 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2243 err = b43_try_request_fw(ctx);
2244 if (!err)
2245 goto out; /* Successfully loaded it. */
2246 err = ctx->fatal_failure;
2247 if (err)
2248 goto out;
2249
2250 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2251 err = b43_try_request_fw(ctx);
2252 if (!err)
2253 goto out; /* Successfully loaded it. */
2254 err = ctx->fatal_failure;
2255 if (err)
2256 goto out;
2257
2258 /* Could not find a usable firmware. Print the errors. */
2259 for (i = 0; i < B43_NR_FWTYPES; i++) {
2260 errmsg = ctx->errors[i];
2261 if (strlen(errmsg))
2262 b43err(dev->wl, errmsg);
2263 }
2264 b43_print_fw_helptext(dev->wl, 1);
2265 err = -ENOENT;
2266
2267 out:
2268 kfree(ctx);
2269 return err;
2270 }
2271
2272 static int b43_upload_microcode(struct b43_wldev *dev)
2273 {
2274 const size_t hdr_len = sizeof(struct b43_fw_header);
2275 const __be32 *data;
2276 unsigned int i, len;
2277 u16 fwrev, fwpatch, fwdate, fwtime;
2278 u32 tmp, macctl;
2279 int err = 0;
2280
2281 /* Jump the microcode PSM to offset 0 */
2282 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2283 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2284 macctl |= B43_MACCTL_PSM_JMP0;
2285 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2286 /* Zero out all microcode PSM registers and shared memory. */
2287 for (i = 0; i < 64; i++)
2288 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2289 for (i = 0; i < 4096; i += 2)
2290 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2291
2292 /* Upload Microcode. */
2293 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2294 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2295 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2296 for (i = 0; i < len; i++) {
2297 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2298 udelay(10);
2299 }
2300
2301 if (dev->fw.pcm.data) {
2302 /* Upload PCM data. */
2303 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2304 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2305 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2306 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2307 /* No need for autoinc bit in SHM_HW */
2308 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2309 for (i = 0; i < len; i++) {
2310 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2311 udelay(10);
2312 }
2313 }
2314
2315 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2316
2317 /* Start the microcode PSM */
2318 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2319 macctl &= ~B43_MACCTL_PSM_JMP0;
2320 macctl |= B43_MACCTL_PSM_RUN;
2321 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2322
2323 /* Wait for the microcode to load and respond */
2324 i = 0;
2325 while (1) {
2326 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2327 if (tmp == B43_IRQ_MAC_SUSPENDED)
2328 break;
2329 i++;
2330 if (i >= 20) {
2331 b43err(dev->wl, "Microcode not responding\n");
2332 b43_print_fw_helptext(dev->wl, 1);
2333 err = -ENODEV;
2334 goto error;
2335 }
2336 msleep(50);
2337 }
2338 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2339
2340 /* Get and check the revisions. */
2341 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2342 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2343 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2344 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2345
2346 if (fwrev <= 0x128) {
2347 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2348 "binary drivers older than version 4.x is unsupported. "
2349 "You must upgrade your firmware files.\n");
2350 b43_print_fw_helptext(dev->wl, 1);
2351 err = -EOPNOTSUPP;
2352 goto error;
2353 }
2354 dev->fw.rev = fwrev;
2355 dev->fw.patch = fwpatch;
2356 dev->fw.opensource = (fwdate == 0xFFFF);
2357
2358 /* Default to use-all-queues. */
2359 dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues;
2360 dev->qos_enabled = !!modparam_qos;
2361 /* Default to firmware/hardware crypto acceleration. */
2362 dev->hwcrypto_enabled = 1;
2363
2364 if (dev->fw.opensource) {
2365 u16 fwcapa;
2366
2367 /* Patchlevel info is encoded in the "time" field. */
2368 dev->fw.patch = fwtime;
2369 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2370 dev->fw.rev, dev->fw.patch);
2371
2372 fwcapa = b43_fwcapa_read(dev);
2373 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2374 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2375 /* Disable hardware crypto and fall back to software crypto. */
2376 dev->hwcrypto_enabled = 0;
2377 }
2378 if (!(fwcapa & B43_FWCAPA_QOS)) {
2379 b43info(dev->wl, "QoS not supported by firmware\n");
2380 /* Disable QoS. Tweak hw->queues to 1. It will be restored before
2381 * ieee80211_unregister to make sure the networking core can
2382 * properly free possible resources. */
2383 dev->wl->hw->queues = 1;
2384 dev->qos_enabled = 0;
2385 }
2386 } else {
2387 b43info(dev->wl, "Loading firmware version %u.%u "
2388 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2389 fwrev, fwpatch,
2390 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2391 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2392 if (dev->fw.pcm_request_failed) {
2393 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2394 "Hardware accelerated cryptography is disabled.\n");
2395 b43_print_fw_helptext(dev->wl, 0);
2396 }
2397 }
2398
2399 if (b43_is_old_txhdr_format(dev)) {
2400 /* We're over the deadline, but we keep support for old fw
2401 * until it turns out to be in major conflict with something new. */
2402 b43warn(dev->wl, "You are using an old firmware image. "
2403 "Support for old firmware will be removed soon "
2404 "(official deadline was July 2008).\n");
2405 b43_print_fw_helptext(dev->wl, 0);
2406 }
2407
2408 return 0;
2409
2410 error:
2411 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2412 macctl &= ~B43_MACCTL_PSM_RUN;
2413 macctl |= B43_MACCTL_PSM_JMP0;
2414 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2415
2416 return err;
2417 }
2418
2419 static int b43_write_initvals(struct b43_wldev *dev,
2420 const struct b43_iv *ivals,
2421 size_t count,
2422 size_t array_size)
2423 {
2424 const struct b43_iv *iv;
2425 u16 offset;
2426 size_t i;
2427 bool bit32;
2428
2429 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2430 iv = ivals;
2431 for (i = 0; i < count; i++) {
2432 if (array_size < sizeof(iv->offset_size))
2433 goto err_format;
2434 array_size -= sizeof(iv->offset_size);
2435 offset = be16_to_cpu(iv->offset_size);
2436 bit32 = !!(offset & B43_IV_32BIT);
2437 offset &= B43_IV_OFFSET_MASK;
2438 if (offset >= 0x1000)
2439 goto err_format;
2440 if (bit32) {
2441 u32 value;
2442
2443 if (array_size < sizeof(iv->data.d32))
2444 goto err_format;
2445 array_size -= sizeof(iv->data.d32);
2446
2447 value = get_unaligned_be32(&iv->data.d32);
2448 b43_write32(dev, offset, value);
2449
2450 iv = (const struct b43_iv *)((const uint8_t *)iv +
2451 sizeof(__be16) +
2452 sizeof(__be32));
2453 } else {
2454 u16 value;
2455
2456 if (array_size < sizeof(iv->data.d16))
2457 goto err_format;
2458 array_size -= sizeof(iv->data.d16);
2459
2460 value = be16_to_cpu(iv->data.d16);
2461 b43_write16(dev, offset, value);
2462
2463 iv = (const struct b43_iv *)((const uint8_t *)iv +
2464 sizeof(__be16) +
2465 sizeof(__be16));
2466 }
2467 }
2468 if (array_size)
2469 goto err_format;
2470
2471 return 0;
2472
2473 err_format:
2474 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2475 b43_print_fw_helptext(dev->wl, 1);
2476
2477 return -EPROTO;
2478 }
2479
2480 static int b43_upload_initvals(struct b43_wldev *dev)
2481 {
2482 const size_t hdr_len = sizeof(struct b43_fw_header);
2483 const struct b43_fw_header *hdr;
2484 struct b43_firmware *fw = &dev->fw;
2485 const struct b43_iv *ivals;
2486 size_t count;
2487 int err;
2488
2489 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2490 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2491 count = be32_to_cpu(hdr->size);
2492 err = b43_write_initvals(dev, ivals, count,
2493 fw->initvals.data->size - hdr_len);
2494 if (err)
2495 goto out;
2496 if (fw->initvals_band.data) {
2497 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2498 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2499 count = be32_to_cpu(hdr->size);
2500 err = b43_write_initvals(dev, ivals, count,
2501 fw->initvals_band.data->size - hdr_len);
2502 if (err)
2503 goto out;
2504 }
2505 out:
2506
2507 return err;
2508 }
2509
2510 /* Initialize the GPIOs
2511 * http://bcm-specs.sipsolutions.net/GPIO
2512 */
2513 static int b43_gpio_init(struct b43_wldev *dev)
2514 {
2515 struct ssb_bus *bus = dev->dev->bus;
2516 struct ssb_device *gpiodev, *pcidev = NULL;
2517 u32 mask, set;
2518
2519 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2520 & ~B43_MACCTL_GPOUTSMSK);
2521
2522 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2523 | 0x000F);
2524
2525 mask = 0x0000001F;
2526 set = 0x0000000F;
2527 if (dev->dev->bus->chip_id == 0x4301) {
2528 mask |= 0x0060;
2529 set |= 0x0060;
2530 }
2531 if (0 /* FIXME: conditional unknown */ ) {
2532 b43_write16(dev, B43_MMIO_GPIO_MASK,
2533 b43_read16(dev, B43_MMIO_GPIO_MASK)
2534 | 0x0100);
2535 mask |= 0x0180;
2536 set |= 0x0180;
2537 }
2538 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2539 b43_write16(dev, B43_MMIO_GPIO_MASK,
2540 b43_read16(dev, B43_MMIO_GPIO_MASK)
2541 | 0x0200);
2542 mask |= 0x0200;
2543 set |= 0x0200;
2544 }
2545 if (dev->dev->id.revision >= 2)
2546 mask |= 0x0010; /* FIXME: This is redundant. */
2547
2548 #ifdef CONFIG_SSB_DRIVER_PCICORE
2549 pcidev = bus->pcicore.dev;
2550 #endif
2551 gpiodev = bus->chipco.dev ? : pcidev;
2552 if (!gpiodev)
2553 return 0;
2554 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2555 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2556 & mask) | set);
2557
2558 return 0;
2559 }
2560
2561 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2562 static void b43_gpio_cleanup(struct b43_wldev *dev)
2563 {
2564 struct ssb_bus *bus = dev->dev->bus;
2565 struct ssb_device *gpiodev, *pcidev = NULL;
2566
2567 #ifdef CONFIG_SSB_DRIVER_PCICORE
2568 pcidev = bus->pcicore.dev;
2569 #endif
2570 gpiodev = bus->chipco.dev ? : pcidev;
2571 if (!gpiodev)
2572 return;
2573 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2574 }
2575
2576 /* http://bcm-specs.sipsolutions.net/EnableMac */
2577 void b43_mac_enable(struct b43_wldev *dev)
2578 {
2579 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2580 u16 fwstate;
2581
2582 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2583 B43_SHM_SH_UCODESTAT);
2584 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2585 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2586 b43err(dev->wl, "b43_mac_enable(): The firmware "
2587 "should be suspended, but current state is %u\n",
2588 fwstate);
2589 }
2590 }
2591
2592 dev->mac_suspended--;
2593 B43_WARN_ON(dev->mac_suspended < 0);
2594 if (dev->mac_suspended == 0) {
2595 b43_write32(dev, B43_MMIO_MACCTL,
2596 b43_read32(dev, B43_MMIO_MACCTL)
2597 | B43_MACCTL_ENABLED);
2598 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2599 B43_IRQ_MAC_SUSPENDED);
2600 /* Commit writes */
2601 b43_read32(dev, B43_MMIO_MACCTL);
2602 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2603 b43_power_saving_ctl_bits(dev, 0);
2604 }
2605 }
2606
2607 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2608 void b43_mac_suspend(struct b43_wldev *dev)
2609 {
2610 int i;
2611 u32 tmp;
2612
2613 might_sleep();
2614 B43_WARN_ON(dev->mac_suspended < 0);
2615
2616 if (dev->mac_suspended == 0) {
2617 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2618 b43_write32(dev, B43_MMIO_MACCTL,
2619 b43_read32(dev, B43_MMIO_MACCTL)
2620 & ~B43_MACCTL_ENABLED);
2621 /* force pci to flush the write */
2622 b43_read32(dev, B43_MMIO_MACCTL);
2623 for (i = 35; i; i--) {
2624 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2625 if (tmp & B43_IRQ_MAC_SUSPENDED)
2626 goto out;
2627 udelay(10);
2628 }
2629 /* Hm, it seems this will take some time. Use msleep(). */
2630 for (i = 40; i; i--) {
2631 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2632 if (tmp & B43_IRQ_MAC_SUSPENDED)
2633 goto out;
2634 msleep(1);
2635 }
2636 b43err(dev->wl, "MAC suspend failed\n");
2637 }
2638 out:
2639 dev->mac_suspended++;
2640 }
2641
2642 static void b43_adjust_opmode(struct b43_wldev *dev)
2643 {
2644 struct b43_wl *wl = dev->wl;
2645 u32 ctl;
2646 u16 cfp_pretbtt;
2647
2648 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2649 /* Reset status to STA infrastructure mode. */
2650 ctl &= ~B43_MACCTL_AP;
2651 ctl &= ~B43_MACCTL_KEEP_CTL;
2652 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2653 ctl &= ~B43_MACCTL_KEEP_BAD;
2654 ctl &= ~B43_MACCTL_PROMISC;
2655 ctl &= ~B43_MACCTL_BEACPROMISC;
2656 ctl |= B43_MACCTL_INFRA;
2657
2658 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2659 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2660 ctl |= B43_MACCTL_AP;
2661 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2662 ctl &= ~B43_MACCTL_INFRA;
2663
2664 if (wl->filter_flags & FIF_CONTROL)
2665 ctl |= B43_MACCTL_KEEP_CTL;
2666 if (wl->filter_flags & FIF_FCSFAIL)
2667 ctl |= B43_MACCTL_KEEP_BAD;
2668 if (wl->filter_flags & FIF_PLCPFAIL)
2669 ctl |= B43_MACCTL_KEEP_BADPLCP;
2670 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2671 ctl |= B43_MACCTL_PROMISC;
2672 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2673 ctl |= B43_MACCTL_BEACPROMISC;
2674
2675 /* Workaround: On old hardware the HW-MAC-address-filter
2676 * doesn't work properly, so always run promisc in filter
2677 * it in software. */
2678 if (dev->dev->id.revision <= 4)
2679 ctl |= B43_MACCTL_PROMISC;
2680
2681 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2682
2683 cfp_pretbtt = 2;
2684 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2685 if (dev->dev->bus->chip_id == 0x4306 &&
2686 dev->dev->bus->chip_rev == 3)
2687 cfp_pretbtt = 100;
2688 else
2689 cfp_pretbtt = 50;
2690 }
2691 b43_write16(dev, 0x612, cfp_pretbtt);
2692
2693 /* FIXME: We don't currently implement the PMQ mechanism,
2694 * so always disable it. If we want to implement PMQ,
2695 * we need to enable it here (clear DISCPMQ) in AP mode.
2696 */
2697 if (0 /* ctl & B43_MACCTL_AP */) {
2698 b43_write32(dev, B43_MMIO_MACCTL,
2699 b43_read32(dev, B43_MMIO_MACCTL)
2700 & ~B43_MACCTL_DISCPMQ);
2701 } else {
2702 b43_write32(dev, B43_MMIO_MACCTL,
2703 b43_read32(dev, B43_MMIO_MACCTL)
2704 | B43_MACCTL_DISCPMQ);
2705 }
2706 }
2707
2708 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2709 {
2710 u16 offset;
2711
2712 if (is_ofdm) {
2713 offset = 0x480;
2714 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2715 } else {
2716 offset = 0x4C0;
2717 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2718 }
2719 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2720 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2721 }
2722
2723 static void b43_rate_memory_init(struct b43_wldev *dev)
2724 {
2725 switch (dev->phy.type) {
2726 case B43_PHYTYPE_A:
2727 case B43_PHYTYPE_G:
2728 case B43_PHYTYPE_N:
2729 case B43_PHYTYPE_LP:
2730 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2731 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2732 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2733 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2734 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2735 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2736 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2737 if (dev->phy.type == B43_PHYTYPE_A)
2738 break;
2739 /* fallthrough */
2740 case B43_PHYTYPE_B:
2741 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2742 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2743 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2744 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2745 break;
2746 default:
2747 B43_WARN_ON(1);
2748 }
2749 }
2750
2751 /* Set the default values for the PHY TX Control Words. */
2752 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2753 {
2754 u16 ctl = 0;
2755
2756 ctl |= B43_TXH_PHY_ENC_CCK;
2757 ctl |= B43_TXH_PHY_ANT01AUTO;
2758 ctl |= B43_TXH_PHY_TXPWR;
2759
2760 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2761 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2762 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2763 }
2764
2765 /* Set the TX-Antenna for management frames sent by firmware. */
2766 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2767 {
2768 u16 ant;
2769 u16 tmp;
2770
2771 ant = b43_antenna_to_phyctl(antenna);
2772
2773 /* For ACK/CTS */
2774 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2775 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2776 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2777 /* For Probe Resposes */
2778 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2779 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2780 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2781 }
2782
2783 /* This is the opposite of b43_chip_init() */
2784 static void b43_chip_exit(struct b43_wldev *dev)
2785 {
2786 b43_phy_exit(dev);
2787 b43_gpio_cleanup(dev);
2788 /* firmware is released later */
2789 }
2790
2791 /* Initialize the chip
2792 * http://bcm-specs.sipsolutions.net/ChipInit
2793 */
2794 static int b43_chip_init(struct b43_wldev *dev)
2795 {
2796 struct b43_phy *phy = &dev->phy;
2797 int err;
2798 u32 value32, macctl;
2799 u16 value16;
2800
2801 /* Initialize the MAC control */
2802 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2803 if (dev->phy.gmode)
2804 macctl |= B43_MACCTL_GMODE;
2805 macctl |= B43_MACCTL_INFRA;
2806 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2807
2808 err = b43_request_firmware(dev);
2809 if (err)
2810 goto out;
2811 err = b43_upload_microcode(dev);
2812 if (err)
2813 goto out; /* firmware is released later */
2814
2815 err = b43_gpio_init(dev);
2816 if (err)
2817 goto out; /* firmware is released later */
2818
2819 err = b43_upload_initvals(dev);
2820 if (err)
2821 goto err_gpio_clean;
2822
2823 /* Turn the Analog on and initialize the PHY. */
2824 phy->ops->switch_analog(dev, 1);
2825 err = b43_phy_init(dev);
2826 if (err)
2827 goto err_gpio_clean;
2828
2829 /* Disable Interference Mitigation. */
2830 if (phy->ops->interf_mitigation)
2831 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2832
2833 /* Select the antennae */
2834 if (phy->ops->set_rx_antenna)
2835 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2836 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2837
2838 if (phy->type == B43_PHYTYPE_B) {
2839 value16 = b43_read16(dev, 0x005E);
2840 value16 |= 0x0004;
2841 b43_write16(dev, 0x005E, value16);
2842 }
2843 b43_write32(dev, 0x0100, 0x01000000);
2844 if (dev->dev->id.revision < 5)
2845 b43_write32(dev, 0x010C, 0x01000000);
2846
2847 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2848 & ~B43_MACCTL_INFRA);
2849 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2850 | B43_MACCTL_INFRA);
2851
2852 /* Probe Response Timeout value */
2853 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2854 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2855
2856 /* Initially set the wireless operation mode. */
2857 b43_adjust_opmode(dev);
2858
2859 if (dev->dev->id.revision < 3) {
2860 b43_write16(dev, 0x060E, 0x0000);
2861 b43_write16(dev, 0x0610, 0x8000);
2862 b43_write16(dev, 0x0604, 0x0000);
2863 b43_write16(dev, 0x0606, 0x0200);
2864 } else {
2865 b43_write32(dev, 0x0188, 0x80000000);
2866 b43_write32(dev, 0x018C, 0x02000000);
2867 }
2868 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2869 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2870 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2871 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2872 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2873 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2874 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2875
2876 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2877 value32 |= 0x00100000;
2878 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2879
2880 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2881 dev->dev->bus->chipco.fast_pwrup_delay);
2882
2883 err = 0;
2884 b43dbg(dev->wl, "Chip initialized\n");
2885 out:
2886 return err;
2887
2888 err_gpio_clean:
2889 b43_gpio_cleanup(dev);
2890 return err;
2891 }
2892
2893 static void b43_periodic_every60sec(struct b43_wldev *dev)
2894 {
2895 const struct b43_phy_operations *ops = dev->phy.ops;
2896
2897 if (ops->pwork_60sec)
2898 ops->pwork_60sec(dev);
2899
2900 /* Force check the TX power emission now. */
2901 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2902 }
2903
2904 static void b43_periodic_every30sec(struct b43_wldev *dev)
2905 {
2906 /* Update device statistics. */
2907 b43_calculate_link_quality(dev);
2908 }
2909
2910 static void b43_periodic_every15sec(struct b43_wldev *dev)
2911 {
2912 struct b43_phy *phy = &dev->phy;
2913 u16 wdr;
2914
2915 if (dev->fw.opensource) {
2916 /* Check if the firmware is still alive.
2917 * It will reset the watchdog counter to 0 in its idle loop. */
2918 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2919 if (unlikely(wdr)) {
2920 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2921 b43_controller_restart(dev, "Firmware watchdog");
2922 return;
2923 } else {
2924 b43_shm_write16(dev, B43_SHM_SCRATCH,
2925 B43_WATCHDOG_REG, 1);
2926 }
2927 }
2928
2929 if (phy->ops->pwork_15sec)
2930 phy->ops->pwork_15sec(dev);
2931
2932 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2933 wmb();
2934
2935 #if B43_DEBUG
2936 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
2937 unsigned int i;
2938
2939 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
2940 dev->irq_count / 15,
2941 dev->tx_count / 15,
2942 dev->rx_count / 15);
2943 dev->irq_count = 0;
2944 dev->tx_count = 0;
2945 dev->rx_count = 0;
2946 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
2947 if (dev->irq_bit_count[i]) {
2948 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
2949 dev->irq_bit_count[i] / 15, i, (1 << i));
2950 dev->irq_bit_count[i] = 0;
2951 }
2952 }
2953 }
2954 #endif
2955 }
2956
2957 static void do_periodic_work(struct b43_wldev *dev)
2958 {
2959 unsigned int state;
2960
2961 state = dev->periodic_state;
2962 if (state % 4 == 0)
2963 b43_periodic_every60sec(dev);
2964 if (state % 2 == 0)
2965 b43_periodic_every30sec(dev);
2966 b43_periodic_every15sec(dev);
2967 }
2968
2969 /* Periodic work locking policy:
2970 * The whole periodic work handler is protected by
2971 * wl->mutex. If another lock is needed somewhere in the
2972 * pwork callchain, it's aquired in-place, where it's needed.
2973 */
2974 static void b43_periodic_work_handler(struct work_struct *work)
2975 {
2976 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2977 periodic_work.work);
2978 struct b43_wl *wl = dev->wl;
2979 unsigned long delay;
2980
2981 mutex_lock(&wl->mutex);
2982
2983 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2984 goto out;
2985 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2986 goto out_requeue;
2987
2988 do_periodic_work(dev);
2989
2990 dev->periodic_state++;
2991 out_requeue:
2992 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2993 delay = msecs_to_jiffies(50);
2994 else
2995 delay = round_jiffies_relative(HZ * 15);
2996 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2997 out:
2998 mutex_unlock(&wl->mutex);
2999 }
3000
3001 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3002 {
3003 struct delayed_work *work = &dev->periodic_work;
3004
3005 dev->periodic_state = 0;
3006 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3007 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3008 }
3009
3010 /* Check if communication with the device works correctly. */
3011 static int b43_validate_chipaccess(struct b43_wldev *dev)
3012 {
3013 u32 v, backup0, backup4;
3014
3015 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3016 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3017
3018 /* Check for read/write and endianness problems. */
3019 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3020 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3021 goto error;
3022 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3023 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3024 goto error;
3025
3026 /* Check if unaligned 32bit SHM_SHARED access works properly.
3027 * However, don't bail out on failure, because it's noncritical. */
3028 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3029 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3030 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3031 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3032 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3033 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3034 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3035 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3036 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3037 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3038 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3039 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3040
3041 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3042 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3043
3044 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
3045 /* The 32bit register shadows the two 16bit registers
3046 * with update sideeffects. Validate this. */
3047 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3048 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3049 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3050 goto error;
3051 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3052 goto error;
3053 }
3054 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3055
3056 v = b43_read32(dev, B43_MMIO_MACCTL);
3057 v |= B43_MACCTL_GMODE;
3058 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3059 goto error;
3060
3061 return 0;
3062 error:
3063 b43err(dev->wl, "Failed to validate the chipaccess\n");
3064 return -ENODEV;
3065 }
3066
3067 static void b43_security_init(struct b43_wldev *dev)
3068 {
3069 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3070 /* KTP is a word address, but we address SHM bytewise.
3071 * So multiply by two.
3072 */
3073 dev->ktp *= 2;
3074 /* Number of RCMTA address slots */
3075 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3076 /* Clear the key memory. */
3077 b43_clear_keys(dev);
3078 }
3079
3080 #ifdef CONFIG_B43_HWRNG
3081 static int b43_rng_read(struct hwrng *rng, u32 *data)
3082 {
3083 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3084 struct b43_wldev *dev;
3085 int count = -ENODEV;
3086
3087 mutex_lock(&wl->mutex);
3088 dev = wl->current_dev;
3089 if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3090 *data = b43_read16(dev, B43_MMIO_RNG);
3091 count = sizeof(u16);
3092 }
3093 mutex_unlock(&wl->mutex);
3094
3095 return count;
3096 }
3097 #endif /* CONFIG_B43_HWRNG */
3098
3099 static void b43_rng_exit(struct b43_wl *wl)
3100 {
3101 #ifdef CONFIG_B43_HWRNG
3102 if (wl->rng_initialized)
3103 hwrng_unregister(&wl->rng);
3104 #endif /* CONFIG_B43_HWRNG */
3105 }
3106
3107 static int b43_rng_init(struct b43_wl *wl)
3108 {
3109 int err = 0;
3110
3111 #ifdef CONFIG_B43_HWRNG
3112 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3113 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3114 wl->rng.name = wl->rng_name;
3115 wl->rng.data_read = b43_rng_read;
3116 wl->rng.priv = (unsigned long)wl;
3117 wl->rng_initialized = 1;
3118 err = hwrng_register(&wl->rng);
3119 if (err) {
3120 wl->rng_initialized = 0;
3121 b43err(wl, "Failed to register the random "
3122 "number generator (%d)\n", err);
3123 }
3124 #endif /* CONFIG_B43_HWRNG */
3125
3126 return err;
3127 }
3128
3129 static void b43_tx_work(struct work_struct *work)
3130 {
3131 struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3132 struct b43_wldev *dev;
3133 struct sk_buff *skb;
3134 int err = 0;
3135
3136 mutex_lock(&wl->mutex);
3137 dev = wl->current_dev;
3138 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3139 mutex_unlock(&wl->mutex);
3140 return;
3141 }
3142
3143 while (skb_queue_len(&wl->tx_queue)) {
3144 skb = skb_dequeue(&wl->tx_queue);
3145
3146 if (b43_using_pio_transfers(dev))
3147 err = b43_pio_tx(dev, skb);
3148 else
3149 err = b43_dma_tx(dev, skb);
3150 if (unlikely(err))
3151 dev_kfree_skb(skb); /* Drop it */
3152 }
3153
3154 #if B43_DEBUG
3155 dev->tx_count++;
3156 #endif
3157 mutex_unlock(&wl->mutex);
3158 }
3159
3160 static int b43_op_tx(struct ieee80211_hw *hw,
3161 struct sk_buff *skb)
3162 {
3163 struct b43_wl *wl = hw_to_b43_wl(hw);
3164
3165 if (unlikely(skb->len < 2 + 2 + 6)) {
3166 /* Too short, this can't be a valid frame. */
3167 dev_kfree_skb_any(skb);
3168 return NETDEV_TX_OK;
3169 }
3170 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3171
3172 skb_queue_tail(&wl->tx_queue, skb);
3173 ieee80211_queue_work(wl->hw, &wl->tx_work);
3174
3175 return NETDEV_TX_OK;
3176 }
3177
3178 static void b43_qos_params_upload(struct b43_wldev *dev,
3179 const struct ieee80211_tx_queue_params *p,
3180 u16 shm_offset)
3181 {
3182 u16 params[B43_NR_QOSPARAMS];
3183 int bslots, tmp;
3184 unsigned int i;
3185
3186 if (!dev->qos_enabled)
3187 return;
3188
3189 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3190
3191 memset(&params, 0, sizeof(params));
3192
3193 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3194 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3195 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3196 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3197 params[B43_QOSPARAM_AIFS] = p->aifs;
3198 params[B43_QOSPARAM_BSLOTS] = bslots;
3199 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3200
3201 for (i = 0; i < ARRAY_SIZE(params); i++) {
3202 if (i == B43_QOSPARAM_STATUS) {
3203 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3204 shm_offset + (i * 2));
3205 /* Mark the parameters as updated. */
3206 tmp |= 0x100;
3207 b43_shm_write16(dev, B43_SHM_SHARED,
3208 shm_offset + (i * 2),
3209 tmp);
3210 } else {
3211 b43_shm_write16(dev, B43_SHM_SHARED,
3212 shm_offset + (i * 2),
3213 params[i]);
3214 }
3215 }
3216 }
3217
3218 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3219 static const u16 b43_qos_shm_offsets[] = {
3220 /* [mac80211-queue-nr] = SHM_OFFSET, */
3221 [0] = B43_QOS_VOICE,
3222 [1] = B43_QOS_VIDEO,
3223 [2] = B43_QOS_BESTEFFORT,
3224 [3] = B43_QOS_BACKGROUND,
3225 };
3226
3227 /* Update all QOS parameters in hardware. */
3228 static void b43_qos_upload_all(struct b43_wldev *dev)
3229 {
3230 struct b43_wl *wl = dev->wl;
3231 struct b43_qos_params *params;
3232 unsigned int i;
3233
3234 if (!dev->qos_enabled)
3235 return;
3236
3237 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3238 ARRAY_SIZE(wl->qos_params));
3239
3240 b43_mac_suspend(dev);
3241 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3242 params = &(wl->qos_params[i]);
3243 b43_qos_params_upload(dev, &(params->p),
3244 b43_qos_shm_offsets[i]);
3245 }
3246 b43_mac_enable(dev);
3247 }
3248
3249 static void b43_qos_clear(struct b43_wl *wl)
3250 {
3251 struct b43_qos_params *params;
3252 unsigned int i;
3253
3254 /* Initialize QoS parameters to sane defaults. */
3255
3256 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3257 ARRAY_SIZE(wl->qos_params));
3258
3259 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3260 params = &(wl->qos_params[i]);
3261
3262 switch (b43_qos_shm_offsets[i]) {
3263 case B43_QOS_VOICE:
3264 params->p.txop = 0;
3265 params->p.aifs = 2;
3266 params->p.cw_min = 0x0001;
3267 params->p.cw_max = 0x0001;
3268 break;
3269 case B43_QOS_VIDEO:
3270 params->p.txop = 0;
3271 params->p.aifs = 2;
3272 params->p.cw_min = 0x0001;
3273 params->p.cw_max = 0x0001;
3274 break;
3275 case B43_QOS_BESTEFFORT:
3276 params->p.txop = 0;
3277 params->p.aifs = 3;
3278 params->p.cw_min = 0x0001;
3279 params->p.cw_max = 0x03FF;
3280 break;
3281 case B43_QOS_BACKGROUND:
3282 params->p.txop = 0;
3283 params->p.aifs = 7;
3284 params->p.cw_min = 0x0001;
3285 params->p.cw_max = 0x03FF;
3286 break;
3287 default:
3288 B43_WARN_ON(1);
3289 }
3290 }
3291 }
3292
3293 /* Initialize the core's QOS capabilities */
3294 static void b43_qos_init(struct b43_wldev *dev)
3295 {
3296 if (!dev->qos_enabled) {
3297 /* Disable QOS support. */
3298 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3299 b43_write16(dev, B43_MMIO_IFSCTL,
3300 b43_read16(dev, B43_MMIO_IFSCTL)
3301 & ~B43_MMIO_IFSCTL_USE_EDCF);
3302 b43dbg(dev->wl, "QoS disabled\n");
3303 return;
3304 }
3305
3306 /* Upload the current QOS parameters. */
3307 b43_qos_upload_all(dev);
3308
3309 /* Enable QOS support. */
3310 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3311 b43_write16(dev, B43_MMIO_IFSCTL,
3312 b43_read16(dev, B43_MMIO_IFSCTL)
3313 | B43_MMIO_IFSCTL_USE_EDCF);
3314 b43dbg(dev->wl, "QoS enabled\n");
3315 }
3316
3317 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3318 const struct ieee80211_tx_queue_params *params)
3319 {
3320 struct b43_wl *wl = hw_to_b43_wl(hw);
3321 struct b43_wldev *dev;
3322 unsigned int queue = (unsigned int)_queue;
3323 int err = -ENODEV;
3324
3325 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3326 /* Queue not available or don't support setting
3327 * params on this queue. Return success to not
3328 * confuse mac80211. */
3329 return 0;
3330 }
3331 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3332 ARRAY_SIZE(wl->qos_params));
3333
3334 mutex_lock(&wl->mutex);
3335 dev = wl->current_dev;
3336 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3337 goto out_unlock;
3338
3339 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3340 b43_mac_suspend(dev);
3341 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3342 b43_qos_shm_offsets[queue]);
3343 b43_mac_enable(dev);
3344 err = 0;
3345
3346 out_unlock:
3347 mutex_unlock(&wl->mutex);
3348
3349 return err;
3350 }
3351
3352 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3353 struct ieee80211_tx_queue_stats *stats)
3354 {
3355 struct b43_wl *wl = hw_to_b43_wl(hw);
3356 struct b43_wldev *dev;
3357 int err = -ENODEV;
3358
3359 mutex_lock(&wl->mutex);
3360 dev = wl->current_dev;
3361 if (dev && b43_status(dev) >= B43_STAT_STARTED) {
3362 if (b43_using_pio_transfers(dev))
3363 b43_pio_get_tx_stats(dev, stats);
3364 else
3365 b43_dma_get_tx_stats(dev, stats);
3366 err = 0;
3367 }
3368 mutex_unlock(&wl->mutex);
3369
3370 return err;
3371 }
3372
3373 static int b43_op_get_stats(struct ieee80211_hw *hw,
3374 struct ieee80211_low_level_stats *stats)
3375 {
3376 struct b43_wl *wl = hw_to_b43_wl(hw);
3377
3378 mutex_lock(&wl->mutex);
3379 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3380 mutex_unlock(&wl->mutex);
3381
3382 return 0;
3383 }
3384
3385 static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
3386 {
3387 struct b43_wl *wl = hw_to_b43_wl(hw);
3388 struct b43_wldev *dev;
3389 u64 tsf;
3390
3391 mutex_lock(&wl->mutex);
3392 dev = wl->current_dev;
3393
3394 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3395 b43_tsf_read(dev, &tsf);
3396 else
3397 tsf = 0;
3398
3399 mutex_unlock(&wl->mutex);
3400
3401 return tsf;
3402 }
3403
3404 static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3405 {
3406 struct b43_wl *wl = hw_to_b43_wl(hw);
3407 struct b43_wldev *dev;
3408
3409 mutex_lock(&wl->mutex);
3410 dev = wl->current_dev;
3411
3412 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3413 b43_tsf_write(dev, tsf);
3414
3415 mutex_unlock(&wl->mutex);
3416 }
3417
3418 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3419 {
3420 struct ssb_device *sdev = dev->dev;
3421 u32 tmslow;
3422
3423 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3424 tmslow &= ~B43_TMSLOW_GMODE;
3425 tmslow |= B43_TMSLOW_PHYRESET;
3426 tmslow |= SSB_TMSLOW_FGC;
3427 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3428 msleep(1);
3429
3430 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3431 tmslow &= ~SSB_TMSLOW_FGC;
3432 tmslow |= B43_TMSLOW_PHYRESET;
3433 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3434 msleep(1);
3435 }
3436
3437 static const char *band_to_string(enum ieee80211_band band)
3438 {
3439 switch (band) {
3440 case IEEE80211_BAND_5GHZ:
3441 return "5";
3442 case IEEE80211_BAND_2GHZ:
3443 return "2.4";
3444 default:
3445 break;
3446 }
3447 B43_WARN_ON(1);
3448 return "";
3449 }
3450
3451 /* Expects wl->mutex locked */
3452 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3453 {
3454 struct b43_wldev *up_dev = NULL;
3455 struct b43_wldev *down_dev;
3456 struct b43_wldev *d;
3457 int err;
3458 bool uninitialized_var(gmode);
3459 int prev_status;
3460
3461 /* Find a device and PHY which supports the band. */
3462 list_for_each_entry(d, &wl->devlist, list) {
3463 switch (chan->band) {
3464 case IEEE80211_BAND_5GHZ:
3465 if (d->phy.supports_5ghz) {
3466 up_dev = d;
3467 gmode = 0;
3468 }
3469 break;
3470 case IEEE80211_BAND_2GHZ:
3471 if (d->phy.supports_2ghz) {
3472 up_dev = d;
3473 gmode = 1;
3474 }
3475 break;
3476 default:
3477 B43_WARN_ON(1);
3478 return -EINVAL;
3479 }
3480 if (up_dev)
3481 break;
3482 }
3483 if (!up_dev) {
3484 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3485 band_to_string(chan->band));
3486 return -ENODEV;
3487 }
3488 if ((up_dev == wl->current_dev) &&
3489 (!!wl->current_dev->phy.gmode == !!gmode)) {
3490 /* This device is already running. */
3491 return 0;
3492 }
3493 b43dbg(wl, "Switching to %s-GHz band\n",
3494 band_to_string(chan->band));
3495 down_dev = wl->current_dev;
3496
3497 prev_status = b43_status(down_dev);
3498 /* Shutdown the currently running core. */
3499 if (prev_status >= B43_STAT_STARTED)
3500 down_dev = b43_wireless_core_stop(down_dev);
3501 if (prev_status >= B43_STAT_INITIALIZED)
3502 b43_wireless_core_exit(down_dev);
3503
3504 if (down_dev != up_dev) {
3505 /* We switch to a different core, so we put PHY into
3506 * RESET on the old core. */
3507 b43_put_phy_into_reset(down_dev);
3508 }
3509
3510 /* Now start the new core. */
3511 up_dev->phy.gmode = gmode;
3512 if (prev_status >= B43_STAT_INITIALIZED) {
3513 err = b43_wireless_core_init(up_dev);
3514 if (err) {
3515 b43err(wl, "Fatal: Could not initialize device for "
3516 "selected %s-GHz band\n",
3517 band_to_string(chan->band));
3518 goto init_failure;
3519 }
3520 }
3521 if (prev_status >= B43_STAT_STARTED) {
3522 err = b43_wireless_core_start(up_dev);
3523 if (err) {
3524 b43err(wl, "Fatal: Coult not start device for "
3525 "selected %s-GHz band\n",
3526 band_to_string(chan->band));
3527 b43_wireless_core_exit(up_dev);
3528 goto init_failure;
3529 }
3530 }
3531 B43_WARN_ON(b43_status(up_dev) != prev_status);
3532
3533 wl->current_dev = up_dev;
3534
3535 return 0;
3536 init_failure:
3537 /* Whoops, failed to init the new core. No core is operating now. */
3538 wl->current_dev = NULL;
3539 return err;
3540 }
3541
3542 /* Write the short and long frame retry limit values. */
3543 static void b43_set_retry_limits(struct b43_wldev *dev,
3544 unsigned int short_retry,
3545 unsigned int long_retry)
3546 {
3547 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3548 * the chip-internal counter. */
3549 short_retry = min(short_retry, (unsigned int)0xF);
3550 long_retry = min(long_retry, (unsigned int)0xF);
3551
3552 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3553 short_retry);
3554 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3555 long_retry);
3556 }
3557
3558 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3559 {
3560 struct b43_wl *wl = hw_to_b43_wl(hw);
3561 struct b43_wldev *dev;
3562 struct b43_phy *phy;
3563 struct ieee80211_conf *conf = &hw->conf;
3564 int antenna;
3565 int err = 0;
3566
3567 mutex_lock(&wl->mutex);
3568
3569 /* Switch the band (if necessary). This might change the active core. */
3570 err = b43_switch_band(wl, conf->channel);
3571 if (err)
3572 goto out_unlock_mutex;
3573 dev = wl->current_dev;
3574 phy = &dev->phy;
3575
3576 if (conf_is_ht(conf))
3577 phy->is_40mhz =
3578 (conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf));
3579 else
3580 phy->is_40mhz = false;
3581
3582 b43_mac_suspend(dev);
3583
3584 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3585 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3586 conf->long_frame_max_tx_count);
3587 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3588 if (!changed)
3589 goto out_mac_enable;
3590
3591 /* Switch to the requested channel.
3592 * The firmware takes care of races with the TX handler. */
3593 if (conf->channel->hw_value != phy->channel)
3594 b43_switch_channel(dev, conf->channel->hw_value);
3595
3596 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
3597
3598 /* Adjust the desired TX power level. */
3599 if (conf->power_level != 0) {
3600 if (conf->power_level != phy->desired_txpower) {
3601 phy->desired_txpower = conf->power_level;
3602 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3603 B43_TXPWR_IGNORE_TSSI);
3604 }
3605 }
3606
3607 /* Antennas for RX and management frame TX. */
3608 antenna = B43_ANTENNA_DEFAULT;
3609 b43_mgmtframe_txantenna(dev, antenna);
3610 antenna = B43_ANTENNA_DEFAULT;
3611 if (phy->ops->set_rx_antenna)
3612 phy->ops->set_rx_antenna(dev, antenna);
3613
3614 if (wl->radio_enabled != phy->radio_on) {
3615 if (wl->radio_enabled) {
3616 b43_software_rfkill(dev, false);
3617 b43info(dev->wl, "Radio turned on by software\n");
3618 if (!dev->radio_hw_enable) {
3619 b43info(dev->wl, "The hardware RF-kill button "
3620 "still turns the radio physically off. "
3621 "Press the button to turn it on.\n");
3622 }
3623 } else {
3624 b43_software_rfkill(dev, true);
3625 b43info(dev->wl, "Radio turned off by software\n");
3626 }
3627 }
3628
3629 out_mac_enable:
3630 b43_mac_enable(dev);
3631 out_unlock_mutex:
3632 mutex_unlock(&wl->mutex);
3633
3634 return err;
3635 }
3636
3637 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3638 {
3639 struct ieee80211_supported_band *sband =
3640 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3641 struct ieee80211_rate *rate;
3642 int i;
3643 u16 basic, direct, offset, basic_offset, rateptr;
3644
3645 for (i = 0; i < sband->n_bitrates; i++) {
3646 rate = &sband->bitrates[i];
3647
3648 if (b43_is_cck_rate(rate->hw_value)) {
3649 direct = B43_SHM_SH_CCKDIRECT;
3650 basic = B43_SHM_SH_CCKBASIC;
3651 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3652 offset &= 0xF;
3653 } else {
3654 direct = B43_SHM_SH_OFDMDIRECT;
3655 basic = B43_SHM_SH_OFDMBASIC;
3656 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3657 offset &= 0xF;
3658 }
3659
3660 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3661
3662 if (b43_is_cck_rate(rate->hw_value)) {
3663 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3664 basic_offset &= 0xF;
3665 } else {
3666 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3667 basic_offset &= 0xF;
3668 }
3669
3670 /*
3671 * Get the pointer that we need to point to
3672 * from the direct map
3673 */
3674 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3675 direct + 2 * basic_offset);
3676 /* and write it to the basic map */
3677 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3678 rateptr);
3679 }
3680 }
3681
3682 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3683 struct ieee80211_vif *vif,
3684 struct ieee80211_bss_conf *conf,
3685 u32 changed)
3686 {
3687 struct b43_wl *wl = hw_to_b43_wl(hw);
3688 struct b43_wldev *dev;
3689
3690 mutex_lock(&wl->mutex);
3691
3692 dev = wl->current_dev;
3693 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3694 goto out_unlock_mutex;
3695
3696 B43_WARN_ON(wl->vif != vif);
3697
3698 if (changed & BSS_CHANGED_BSSID) {
3699 if (conf->bssid)
3700 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3701 else
3702 memset(wl->bssid, 0, ETH_ALEN);
3703 }
3704
3705 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3706 if (changed & BSS_CHANGED_BEACON &&
3707 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3708 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3709 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3710 b43_update_templates(wl);
3711
3712 if (changed & BSS_CHANGED_BSSID)
3713 b43_write_mac_bssid_templates(dev);
3714 }
3715
3716 b43_mac_suspend(dev);
3717
3718 /* Update templates for AP/mesh mode. */
3719 if (changed & BSS_CHANGED_BEACON_INT &&
3720 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3721 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3722 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3723 b43_set_beacon_int(dev, conf->beacon_int);
3724
3725 if (changed & BSS_CHANGED_BASIC_RATES)
3726 b43_update_basic_rates(dev, conf->basic_rates);
3727
3728 if (changed & BSS_CHANGED_ERP_SLOT) {
3729 if (conf->use_short_slot)
3730 b43_short_slot_timing_enable(dev);
3731 else
3732 b43_short_slot_timing_disable(dev);
3733 }
3734
3735 b43_mac_enable(dev);
3736 out_unlock_mutex:
3737 mutex_unlock(&wl->mutex);
3738 }
3739
3740 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3741 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3742 struct ieee80211_key_conf *key)
3743 {
3744 struct b43_wl *wl = hw_to_b43_wl(hw);
3745 struct b43_wldev *dev;
3746 u8 algorithm;
3747 u8 index;
3748 int err;
3749 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
3750
3751 if (modparam_nohwcrypt)
3752 return -ENOSPC; /* User disabled HW-crypto */
3753
3754 mutex_lock(&wl->mutex);
3755
3756 dev = wl->current_dev;
3757 err = -ENODEV;
3758 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3759 goto out_unlock;
3760
3761 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
3762 /* We don't have firmware for the crypto engine.
3763 * Must use software-crypto. */
3764 err = -EOPNOTSUPP;
3765 goto out_unlock;
3766 }
3767
3768 err = -EINVAL;
3769 switch (key->alg) {
3770 case ALG_WEP:
3771 if (key->keylen == WLAN_KEY_LEN_WEP40)
3772 algorithm = B43_SEC_ALGO_WEP40;
3773 else
3774 algorithm = B43_SEC_ALGO_WEP104;
3775 break;
3776 case ALG_TKIP:
3777 algorithm = B43_SEC_ALGO_TKIP;
3778 break;
3779 case ALG_CCMP:
3780 algorithm = B43_SEC_ALGO_AES;
3781 break;
3782 default:
3783 B43_WARN_ON(1);
3784 goto out_unlock;
3785 }
3786 index = (u8) (key->keyidx);
3787 if (index > 3)
3788 goto out_unlock;
3789
3790 switch (cmd) {
3791 case SET_KEY:
3792 if (algorithm == B43_SEC_ALGO_TKIP &&
3793 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3794 !modparam_hwtkip)) {
3795 /* We support only pairwise key */
3796 err = -EOPNOTSUPP;
3797 goto out_unlock;
3798 }
3799
3800 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3801 if (WARN_ON(!sta)) {
3802 err = -EOPNOTSUPP;
3803 goto out_unlock;
3804 }
3805 /* Pairwise key with an assigned MAC address. */
3806 err = b43_key_write(dev, -1, algorithm,
3807 key->key, key->keylen,
3808 sta->addr, key);
3809 } else {
3810 /* Group key */
3811 err = b43_key_write(dev, index, algorithm,
3812 key->key, key->keylen, NULL, key);
3813 }
3814 if (err)
3815 goto out_unlock;
3816
3817 if (algorithm == B43_SEC_ALGO_WEP40 ||
3818 algorithm == B43_SEC_ALGO_WEP104) {
3819 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3820 } else {
3821 b43_hf_write(dev,
3822 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3823 }
3824 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3825 if (algorithm == B43_SEC_ALGO_TKIP)
3826 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3827 break;
3828 case DISABLE_KEY: {
3829 err = b43_key_clear(dev, key->hw_key_idx);
3830 if (err)
3831 goto out_unlock;
3832 break;
3833 }
3834 default:
3835 B43_WARN_ON(1);
3836 }
3837
3838 out_unlock:
3839 if (!err) {
3840 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3841 "mac: %pM\n",
3842 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3843 sta ? sta->addr : bcast_addr);
3844 b43_dump_keymemory(dev);
3845 }
3846 mutex_unlock(&wl->mutex);
3847
3848 return err;
3849 }
3850
3851 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3852 unsigned int changed, unsigned int *fflags,
3853 u64 multicast)
3854 {
3855 struct b43_wl *wl = hw_to_b43_wl(hw);
3856 struct b43_wldev *dev;
3857
3858 mutex_lock(&wl->mutex);
3859 dev = wl->current_dev;
3860 if (!dev) {
3861 *fflags = 0;
3862 goto out_unlock;
3863 }
3864
3865 *fflags &= FIF_PROMISC_IN_BSS |
3866 FIF_ALLMULTI |
3867 FIF_FCSFAIL |
3868 FIF_PLCPFAIL |
3869 FIF_CONTROL |
3870 FIF_OTHER_BSS |
3871 FIF_BCN_PRBRESP_PROMISC;
3872
3873 changed &= FIF_PROMISC_IN_BSS |
3874 FIF_ALLMULTI |
3875 FIF_FCSFAIL |
3876 FIF_PLCPFAIL |
3877 FIF_CONTROL |
3878 FIF_OTHER_BSS |
3879 FIF_BCN_PRBRESP_PROMISC;
3880
3881 wl->filter_flags = *fflags;
3882
3883 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3884 b43_adjust_opmode(dev);
3885
3886 out_unlock:
3887 mutex_unlock(&wl->mutex);
3888 }
3889
3890 /* Locking: wl->mutex
3891 * Returns the current dev. This might be different from the passed in dev,
3892 * because the core might be gone away while we unlocked the mutex. */
3893 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
3894 {
3895 struct b43_wl *wl = dev->wl;
3896 struct b43_wldev *orig_dev;
3897 u32 mask;
3898
3899 redo:
3900 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3901 return dev;
3902
3903 /* Cancel work. Unlock to avoid deadlocks. */
3904 mutex_unlock(&wl->mutex);
3905 cancel_delayed_work_sync(&dev->periodic_work);
3906 cancel_work_sync(&wl->tx_work);
3907 mutex_lock(&wl->mutex);
3908 dev = wl->current_dev;
3909 if (!dev || b43_status(dev) < B43_STAT_STARTED) {
3910 /* Whoops, aliens ate up the device while we were unlocked. */
3911 return dev;
3912 }
3913
3914 /* Disable interrupts on the device. */
3915 b43_set_status(dev, B43_STAT_INITIALIZED);
3916 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3917 /* wl->mutex is locked. That is enough. */
3918 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3919 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3920 } else {
3921 spin_lock_irq(&wl->hardirq_lock);
3922 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3923 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3924 spin_unlock_irq(&wl->hardirq_lock);
3925 }
3926 /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
3927 orig_dev = dev;
3928 mutex_unlock(&wl->mutex);
3929 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3930 b43_sdio_free_irq(dev);
3931 } else {
3932 synchronize_irq(dev->dev->irq);
3933 free_irq(dev->dev->irq, dev);
3934 }
3935 mutex_lock(&wl->mutex);
3936 dev = wl->current_dev;
3937 if (!dev)
3938 return dev;
3939 if (dev != orig_dev) {
3940 if (b43_status(dev) >= B43_STAT_STARTED)
3941 goto redo;
3942 return dev;
3943 }
3944 mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
3945 B43_WARN_ON(mask != 0xFFFFFFFF && mask);
3946
3947 /* Drain the TX queue */
3948 while (skb_queue_len(&wl->tx_queue))
3949 dev_kfree_skb(skb_dequeue(&wl->tx_queue));
3950
3951 b43_mac_suspend(dev);
3952 b43_leds_exit(dev);
3953 b43dbg(wl, "Wireless interface stopped\n");
3954
3955 return dev;
3956 }
3957
3958 /* Locking: wl->mutex */
3959 static int b43_wireless_core_start(struct b43_wldev *dev)
3960 {
3961 int err;
3962
3963 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3964
3965 drain_txstatus_queue(dev);
3966 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3967 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
3968 if (err) {
3969 b43err(dev->wl, "Cannot request SDIO IRQ\n");
3970 goto out;
3971 }
3972 } else {
3973 err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
3974 b43_interrupt_thread_handler,
3975 IRQF_SHARED, KBUILD_MODNAME, dev);
3976 if (err) {
3977 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3978 goto out;
3979 }
3980 }
3981
3982 /* We are ready to run. */
3983 b43_set_status(dev, B43_STAT_STARTED);
3984
3985 /* Start data flow (TX/RX). */
3986 b43_mac_enable(dev);
3987 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3988
3989 /* Start maintainance work */
3990 b43_periodic_tasks_setup(dev);
3991
3992 b43_leds_init(dev);
3993
3994 b43dbg(dev->wl, "Wireless interface started\n");
3995 out:
3996 return err;
3997 }
3998
3999 /* Get PHY and RADIO versioning numbers */
4000 static int b43_phy_versioning(struct b43_wldev *dev)
4001 {
4002 struct b43_phy *phy = &dev->phy;
4003 u32 tmp;
4004 u8 analog_type;
4005 u8 phy_type;
4006 u8 phy_rev;
4007 u16 radio_manuf;
4008 u16 radio_ver;
4009 u16 radio_rev;
4010 int unsupported = 0;
4011
4012 /* Get PHY versioning */
4013 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4014 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4015 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4016 phy_rev = (tmp & B43_PHYVER_VERSION);
4017 switch (phy_type) {
4018 case B43_PHYTYPE_A:
4019 if (phy_rev >= 4)
4020 unsupported = 1;
4021 break;
4022 case B43_PHYTYPE_B:
4023 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
4024 && phy_rev != 7)
4025 unsupported = 1;
4026 break;
4027 case B43_PHYTYPE_G:
4028 if (phy_rev > 9)
4029 unsupported = 1;
4030 break;
4031 #ifdef CONFIG_B43_NPHY
4032 case B43_PHYTYPE_N:
4033 if (phy_rev > 4)
4034 unsupported = 1;
4035 break;
4036 #endif
4037 #ifdef CONFIG_B43_PHY_LP
4038 case B43_PHYTYPE_LP:
4039 if (phy_rev > 2)
4040 unsupported = 1;
4041 break;
4042 #endif
4043 default:
4044 unsupported = 1;
4045 };
4046 if (unsupported) {
4047 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
4048 "(Analog %u, Type %u, Revision %u)\n",
4049 analog_type, phy_type, phy_rev);
4050 return -EOPNOTSUPP;
4051 }
4052 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
4053 analog_type, phy_type, phy_rev);
4054
4055 /* Get RADIO versioning */
4056 if (dev->dev->bus->chip_id == 0x4317) {
4057 if (dev->dev->bus->chip_rev == 0)
4058 tmp = 0x3205017F;
4059 else if (dev->dev->bus->chip_rev == 1)
4060 tmp = 0x4205017F;
4061 else
4062 tmp = 0x5205017F;
4063 } else {
4064 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4065 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4066 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4067 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
4068 }
4069 radio_manuf = (tmp & 0x00000FFF);
4070 radio_ver = (tmp & 0x0FFFF000) >> 12;
4071 radio_rev = (tmp & 0xF0000000) >> 28;
4072 if (radio_manuf != 0x17F /* Broadcom */)
4073 unsupported = 1;
4074 switch (phy_type) {
4075 case B43_PHYTYPE_A:
4076 if (radio_ver != 0x2060)
4077 unsupported = 1;
4078 if (radio_rev != 1)
4079 unsupported = 1;
4080 if (radio_manuf != 0x17F)
4081 unsupported = 1;
4082 break;
4083 case B43_PHYTYPE_B:
4084 if ((radio_ver & 0xFFF0) != 0x2050)
4085 unsupported = 1;
4086 break;
4087 case B43_PHYTYPE_G:
4088 if (radio_ver != 0x2050)
4089 unsupported = 1;
4090 break;
4091 case B43_PHYTYPE_N:
4092 if (radio_ver != 0x2055 && radio_ver != 0x2056)
4093 unsupported = 1;
4094 break;
4095 case B43_PHYTYPE_LP:
4096 if (radio_ver != 0x2062 && radio_ver != 0x2063)
4097 unsupported = 1;
4098 break;
4099 default:
4100 B43_WARN_ON(1);
4101 }
4102 if (unsupported) {
4103 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
4104 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
4105 radio_manuf, radio_ver, radio_rev);
4106 return -EOPNOTSUPP;
4107 }
4108 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
4109 radio_manuf, radio_ver, radio_rev);
4110
4111 phy->radio_manuf = radio_manuf;
4112 phy->radio_ver = radio_ver;
4113 phy->radio_rev = radio_rev;
4114
4115 phy->analog = analog_type;
4116 phy->type = phy_type;
4117 phy->rev = phy_rev;
4118
4119 return 0;
4120 }
4121
4122 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4123 struct b43_phy *phy)
4124 {
4125 phy->hardware_power_control = !!modparam_hwpctl;
4126 phy->next_txpwr_check_time = jiffies;
4127 /* PHY TX errors counter. */
4128 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4129
4130 #if B43_DEBUG
4131 phy->phy_locked = 0;
4132 phy->radio_locked = 0;
4133 #endif
4134 }
4135
4136 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4137 {
4138 dev->dfq_valid = 0;
4139
4140 /* Assume the radio is enabled. If it's not enabled, the state will
4141 * immediately get fixed on the first periodic work run. */
4142 dev->radio_hw_enable = 1;
4143
4144 /* Stats */
4145 memset(&dev->stats, 0, sizeof(dev->stats));
4146
4147 setup_struct_phy_for_init(dev, &dev->phy);
4148
4149 /* IRQ related flags */
4150 dev->irq_reason = 0;
4151 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4152 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4153 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4154 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4155
4156 dev->mac_suspended = 1;
4157
4158 /* Noise calculation context */
4159 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4160 }
4161
4162 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4163 {
4164 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
4165 u64 hf;
4166
4167 if (!modparam_btcoex)
4168 return;
4169 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4170 return;
4171 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4172 return;
4173
4174 hf = b43_hf_read(dev);
4175 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4176 hf |= B43_HF_BTCOEXALT;
4177 else
4178 hf |= B43_HF_BTCOEX;
4179 b43_hf_write(dev, hf);
4180 }
4181
4182 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4183 {
4184 if (!modparam_btcoex)
4185 return;
4186 //TODO
4187 }
4188
4189 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4190 {
4191 #ifdef CONFIG_SSB_DRIVER_PCICORE
4192 struct ssb_bus *bus = dev->dev->bus;
4193 u32 tmp;
4194
4195 if (bus->pcicore.dev &&
4196 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
4197 bus->pcicore.dev->id.revision <= 5) {
4198 /* IMCFGLO timeouts workaround. */
4199 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
4200 switch (bus->bustype) {
4201 case SSB_BUSTYPE_PCI:
4202 case SSB_BUSTYPE_PCMCIA:
4203 tmp &= ~SSB_IMCFGLO_REQTO;
4204 tmp &= ~SSB_IMCFGLO_SERTO;
4205 tmp |= 0x32;
4206 break;
4207 case SSB_BUSTYPE_SSB:
4208 tmp &= ~SSB_IMCFGLO_REQTO;
4209 tmp &= ~SSB_IMCFGLO_SERTO;
4210 tmp |= 0x53;
4211 break;
4212 default:
4213 break;
4214 }
4215 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
4216 }
4217 #endif /* CONFIG_SSB_DRIVER_PCICORE */
4218 }
4219
4220 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4221 {
4222 u16 pu_delay;
4223
4224 /* The time value is in microseconds. */
4225 if (dev->phy.type == B43_PHYTYPE_A)
4226 pu_delay = 3700;
4227 else
4228 pu_delay = 1050;
4229 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4230 pu_delay = 500;
4231 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4232 pu_delay = max(pu_delay, (u16)2400);
4233
4234 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4235 }
4236
4237 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4238 static void b43_set_pretbtt(struct b43_wldev *dev)
4239 {
4240 u16 pretbtt;
4241
4242 /* The time value is in microseconds. */
4243 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4244 pretbtt = 2;
4245 } else {
4246 if (dev->phy.type == B43_PHYTYPE_A)
4247 pretbtt = 120;
4248 else
4249 pretbtt = 250;
4250 }
4251 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4252 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4253 }
4254
4255 /* Shutdown a wireless core */
4256 /* Locking: wl->mutex */
4257 static void b43_wireless_core_exit(struct b43_wldev *dev)
4258 {
4259 u32 macctl;
4260
4261 B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4262 if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4263 return;
4264 b43_set_status(dev, B43_STAT_UNINIT);
4265
4266 /* Stop the microcode PSM. */
4267 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4268 macctl &= ~B43_MACCTL_PSM_RUN;
4269 macctl |= B43_MACCTL_PSM_JMP0;
4270 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4271
4272 b43_dma_free(dev);
4273 b43_pio_free(dev);
4274 b43_chip_exit(dev);
4275 dev->phy.ops->switch_analog(dev, 0);
4276 if (dev->wl->current_beacon) {
4277 dev_kfree_skb_any(dev->wl->current_beacon);
4278 dev->wl->current_beacon = NULL;
4279 }
4280
4281 ssb_device_disable(dev->dev, 0);
4282 ssb_bus_may_powerdown(dev->dev->bus);
4283 }
4284
4285 /* Initialize a wireless core */
4286 static int b43_wireless_core_init(struct b43_wldev *dev)
4287 {
4288 struct ssb_bus *bus = dev->dev->bus;
4289 struct ssb_sprom *sprom = &bus->sprom;
4290 struct b43_phy *phy = &dev->phy;
4291 int err;
4292 u64 hf;
4293 u32 tmp;
4294
4295 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4296
4297 err = ssb_bus_powerup(bus, 0);
4298 if (err)
4299 goto out;
4300 if (!ssb_device_is_enabled(dev->dev)) {
4301 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4302 b43_wireless_core_reset(dev, tmp);
4303 }
4304
4305 /* Reset all data structures. */
4306 setup_struct_wldev_for_init(dev);
4307 phy->ops->prepare_structs(dev);
4308
4309 /* Enable IRQ routing to this device. */
4310 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4311
4312 b43_imcfglo_timeouts_workaround(dev);
4313 b43_bluetooth_coext_disable(dev);
4314 if (phy->ops->prepare_hardware) {
4315 err = phy->ops->prepare_hardware(dev);
4316 if (err)
4317 goto err_busdown;
4318 }
4319 err = b43_chip_init(dev);
4320 if (err)
4321 goto err_busdown;
4322 b43_shm_write16(dev, B43_SHM_SHARED,
4323 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4324 hf = b43_hf_read(dev);
4325 if (phy->type == B43_PHYTYPE_G) {
4326 hf |= B43_HF_SYMW;
4327 if (phy->rev == 1)
4328 hf |= B43_HF_GDCW;
4329 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4330 hf |= B43_HF_OFDMPABOOST;
4331 }
4332 if (phy->radio_ver == 0x2050) {
4333 if (phy->radio_rev == 6)
4334 hf |= B43_HF_4318TSSI;
4335 if (phy->radio_rev < 6)
4336 hf |= B43_HF_VCORECALC;
4337 }
4338 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4339 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4340 #ifdef CONFIG_SSB_DRIVER_PCICORE
4341 if ((bus->bustype == SSB_BUSTYPE_PCI) &&
4342 (bus->pcicore.dev->id.revision <= 10))
4343 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4344 #endif
4345 hf &= ~B43_HF_SKCFPUP;
4346 b43_hf_write(dev, hf);
4347
4348 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4349 B43_DEFAULT_LONG_RETRY_LIMIT);
4350 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4351 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4352
4353 /* Disable sending probe responses from firmware.
4354 * Setting the MaxTime to one usec will always trigger
4355 * a timeout, so we never send any probe resp.
4356 * A timeout of zero is infinite. */
4357 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4358
4359 b43_rate_memory_init(dev);
4360 b43_set_phytxctl_defaults(dev);
4361
4362 /* Minimum Contention Window */
4363 if (phy->type == B43_PHYTYPE_B) {
4364 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4365 } else {
4366 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4367 }
4368 /* Maximum Contention Window */
4369 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4370
4371 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) ||
4372 (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) ||
4373 modparam_pio) {
4374 dev->__using_pio_transfers = 1;
4375 err = b43_pio_init(dev);
4376 } else {
4377 dev->__using_pio_transfers = 0;
4378 err = b43_dma_init(dev);
4379 }
4380 if (err)
4381 goto err_chip_exit;
4382 b43_qos_init(dev);
4383 b43_set_synth_pu_delay(dev, 1);
4384 b43_bluetooth_coext_enable(dev);
4385
4386 ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4387 b43_upload_card_macaddress(dev);
4388 b43_security_init(dev);
4389
4390 ieee80211_wake_queues(dev->wl->hw);
4391
4392 ieee80211_wake_queues(dev->wl->hw);
4393
4394 b43_set_status(dev, B43_STAT_INITIALIZED);
4395
4396 out:
4397 return err;
4398
4399 err_chip_exit:
4400 b43_chip_exit(dev);
4401 err_busdown:
4402 ssb_bus_may_powerdown(bus);
4403 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4404 return err;
4405 }
4406
4407 static int b43_op_add_interface(struct ieee80211_hw *hw,
4408 struct ieee80211_vif *vif)
4409 {
4410 struct b43_wl *wl = hw_to_b43_wl(hw);
4411 struct b43_wldev *dev;
4412 int err = -EOPNOTSUPP;
4413
4414 /* TODO: allow WDS/AP devices to coexist */
4415
4416 if (vif->type != NL80211_IFTYPE_AP &&
4417 vif->type != NL80211_IFTYPE_MESH_POINT &&
4418 vif->type != NL80211_IFTYPE_STATION &&
4419 vif->type != NL80211_IFTYPE_WDS &&
4420 vif->type != NL80211_IFTYPE_ADHOC)
4421 return -EOPNOTSUPP;
4422
4423 mutex_lock(&wl->mutex);
4424 if (wl->operating)
4425 goto out_mutex_unlock;
4426
4427 b43dbg(wl, "Adding Interface type %d\n", vif->type);
4428
4429 dev = wl->current_dev;
4430 wl->operating = 1;
4431 wl->vif = vif;
4432 wl->if_type = vif->type;
4433 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
4434
4435 b43_adjust_opmode(dev);
4436 b43_set_pretbtt(dev);
4437 b43_set_synth_pu_delay(dev, 0);
4438 b43_upload_card_macaddress(dev);
4439
4440 err = 0;
4441 out_mutex_unlock:
4442 mutex_unlock(&wl->mutex);
4443
4444 return err;
4445 }
4446
4447 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4448 struct ieee80211_vif *vif)
4449 {
4450 struct b43_wl *wl = hw_to_b43_wl(hw);
4451 struct b43_wldev *dev = wl->current_dev;
4452
4453 b43dbg(wl, "Removing Interface type %d\n", vif->type);
4454
4455 mutex_lock(&wl->mutex);
4456
4457 B43_WARN_ON(!wl->operating);
4458 B43_WARN_ON(wl->vif != vif);
4459 wl->vif = NULL;
4460
4461 wl->operating = 0;
4462
4463 b43_adjust_opmode(dev);
4464 memset(wl->mac_addr, 0, ETH_ALEN);
4465 b43_upload_card_macaddress(dev);
4466
4467 mutex_unlock(&wl->mutex);
4468 }
4469
4470 static int b43_op_start(struct ieee80211_hw *hw)
4471 {
4472 struct b43_wl *wl = hw_to_b43_wl(hw);
4473 struct b43_wldev *dev = wl->current_dev;
4474 int did_init = 0;
4475 int err = 0;
4476
4477 /* Kill all old instance specific information to make sure
4478 * the card won't use it in the short timeframe between start
4479 * and mac80211 reconfiguring it. */
4480 memset(wl->bssid, 0, ETH_ALEN);
4481 memset(wl->mac_addr, 0, ETH_ALEN);
4482 wl->filter_flags = 0;
4483 wl->radiotap_enabled = 0;
4484 b43_qos_clear(wl);
4485 wl->beacon0_uploaded = 0;
4486 wl->beacon1_uploaded = 0;
4487 wl->beacon_templates_virgin = 1;
4488 wl->radio_enabled = 1;
4489
4490 mutex_lock(&wl->mutex);
4491
4492 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4493 err = b43_wireless_core_init(dev);
4494 if (err)
4495 goto out_mutex_unlock;
4496 did_init = 1;
4497 }
4498
4499 if (b43_status(dev) < B43_STAT_STARTED) {
4500 err = b43_wireless_core_start(dev);
4501 if (err) {
4502 if (did_init)
4503 b43_wireless_core_exit(dev);
4504 goto out_mutex_unlock;
4505 }
4506 }
4507
4508 /* XXX: only do if device doesn't support rfkill irq */
4509 wiphy_rfkill_start_polling(hw->wiphy);
4510
4511 out_mutex_unlock:
4512 mutex_unlock(&wl->mutex);
4513
4514 return err;
4515 }
4516
4517 static void b43_op_stop(struct ieee80211_hw *hw)
4518 {
4519 struct b43_wl *wl = hw_to_b43_wl(hw);
4520 struct b43_wldev *dev = wl->current_dev;
4521
4522 cancel_work_sync(&(wl->beacon_update_trigger));
4523
4524 mutex_lock(&wl->mutex);
4525 if (b43_status(dev) >= B43_STAT_STARTED) {
4526 dev = b43_wireless_core_stop(dev);
4527 if (!dev)
4528 goto out_unlock;
4529 }
4530 b43_wireless_core_exit(dev);
4531 wl->radio_enabled = 0;
4532
4533 out_unlock:
4534 mutex_unlock(&wl->mutex);
4535
4536 cancel_work_sync(&(wl->txpower_adjust_work));
4537 }
4538
4539 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4540 struct ieee80211_sta *sta, bool set)
4541 {
4542 struct b43_wl *wl = hw_to_b43_wl(hw);
4543
4544 /* FIXME: add locking */
4545 b43_update_templates(wl);
4546
4547 return 0;
4548 }
4549
4550 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4551 struct ieee80211_vif *vif,
4552 enum sta_notify_cmd notify_cmd,
4553 struct ieee80211_sta *sta)
4554 {
4555 struct b43_wl *wl = hw_to_b43_wl(hw);
4556
4557 B43_WARN_ON(!vif || wl->vif != vif);
4558 }
4559
4560 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4561 {
4562 struct b43_wl *wl = hw_to_b43_wl(hw);
4563 struct b43_wldev *dev;
4564
4565 mutex_lock(&wl->mutex);
4566 dev = wl->current_dev;
4567 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4568 /* Disable CFP update during scan on other channels. */
4569 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4570 }
4571 mutex_unlock(&wl->mutex);
4572 }
4573
4574 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4575 {
4576 struct b43_wl *wl = hw_to_b43_wl(hw);
4577 struct b43_wldev *dev;
4578
4579 mutex_lock(&wl->mutex);
4580 dev = wl->current_dev;
4581 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4582 /* Re-enable CFP update. */
4583 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4584 }
4585 mutex_unlock(&wl->mutex);
4586 }
4587
4588 static const struct ieee80211_ops b43_hw_ops = {
4589 .tx = b43_op_tx,
4590 .conf_tx = b43_op_conf_tx,
4591 .add_interface = b43_op_add_interface,
4592 .remove_interface = b43_op_remove_interface,
4593 .config = b43_op_config,
4594 .bss_info_changed = b43_op_bss_info_changed,
4595 .configure_filter = b43_op_configure_filter,
4596 .set_key = b43_op_set_key,
4597 .update_tkip_key = b43_op_update_tkip_key,
4598 .get_stats = b43_op_get_stats,
4599 .get_tx_stats = b43_op_get_tx_stats,
4600 .get_tsf = b43_op_get_tsf,
4601 .set_tsf = b43_op_set_tsf,
4602 .start = b43_op_start,
4603 .stop = b43_op_stop,
4604 .set_tim = b43_op_beacon_set_tim,
4605 .sta_notify = b43_op_sta_notify,
4606 .sw_scan_start = b43_op_sw_scan_start_notifier,
4607 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
4608 .rfkill_poll = b43_rfkill_poll,
4609 };
4610
4611 /* Hard-reset the chip. Do not call this directly.
4612 * Use b43_controller_restart()
4613 */
4614 static void b43_chip_reset(struct work_struct *work)
4615 {
4616 struct b43_wldev *dev =
4617 container_of(work, struct b43_wldev, restart_work);
4618 struct b43_wl *wl = dev->wl;
4619 int err = 0;
4620 int prev_status;
4621
4622 mutex_lock(&wl->mutex);
4623
4624 prev_status = b43_status(dev);
4625 /* Bring the device down... */
4626 if (prev_status >= B43_STAT_STARTED) {
4627 dev = b43_wireless_core_stop(dev);
4628 if (!dev) {
4629 err = -ENODEV;
4630 goto out;
4631 }
4632 }
4633 if (prev_status >= B43_STAT_INITIALIZED)
4634 b43_wireless_core_exit(dev);
4635
4636 /* ...and up again. */
4637 if (prev_status >= B43_STAT_INITIALIZED) {
4638 err = b43_wireless_core_init(dev);
4639 if (err)
4640 goto out;
4641 }
4642 if (prev_status >= B43_STAT_STARTED) {
4643 err = b43_wireless_core_start(dev);
4644 if (err) {
4645 b43_wireless_core_exit(dev);
4646 goto out;
4647 }
4648 }
4649 out:
4650 if (err)
4651 wl->current_dev = NULL; /* Failed to init the dev. */
4652 mutex_unlock(&wl->mutex);
4653 if (err)
4654 b43err(wl, "Controller restart FAILED\n");
4655 else
4656 b43info(wl, "Controller restarted\n");
4657 }
4658
4659 static int b43_setup_bands(struct b43_wldev *dev,
4660 bool have_2ghz_phy, bool have_5ghz_phy)
4661 {
4662 struct ieee80211_hw *hw = dev->wl->hw;
4663
4664 if (have_2ghz_phy)
4665 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4666 if (dev->phy.type == B43_PHYTYPE_N) {
4667 if (have_5ghz_phy)
4668 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4669 } else {
4670 if (have_5ghz_phy)
4671 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4672 }
4673
4674 dev->phy.supports_2ghz = have_2ghz_phy;
4675 dev->phy.supports_5ghz = have_5ghz_phy;
4676
4677 return 0;
4678 }
4679
4680 static void b43_wireless_core_detach(struct b43_wldev *dev)
4681 {
4682 /* We release firmware that late to not be required to re-request
4683 * is all the time when we reinit the core. */
4684 b43_release_firmware(dev);
4685 b43_phy_free(dev);
4686 }
4687
4688 static int b43_wireless_core_attach(struct b43_wldev *dev)
4689 {
4690 struct b43_wl *wl = dev->wl;
4691 struct ssb_bus *bus = dev->dev->bus;
4692 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
4693 int err;
4694 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4695 u32 tmp;
4696
4697 /* Do NOT do any device initialization here.
4698 * Do it in wireless_core_init() instead.
4699 * This function is for gathering basic information about the HW, only.
4700 * Also some structs may be set up here. But most likely you want to have
4701 * that in core_init(), too.
4702 */
4703
4704 err = ssb_bus_powerup(bus, 0);
4705 if (err) {
4706 b43err(wl, "Bus powerup failed\n");
4707 goto out;
4708 }
4709 /* Get the PHY type. */
4710 if (dev->dev->id.revision >= 5) {
4711 u32 tmshigh;
4712
4713 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4714 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4715 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4716 } else
4717 B43_WARN_ON(1);
4718
4719 dev->phy.gmode = have_2ghz_phy;
4720 dev->phy.radio_on = 1;
4721 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4722 b43_wireless_core_reset(dev, tmp);
4723
4724 err = b43_phy_versioning(dev);
4725 if (err)
4726 goto err_powerdown;
4727 /* Check if this device supports multiband. */
4728 if (!pdev ||
4729 (pdev->device != 0x4312 &&
4730 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4731 /* No multiband support. */
4732 have_2ghz_phy = 0;
4733 have_5ghz_phy = 0;
4734 switch (dev->phy.type) {
4735 case B43_PHYTYPE_A:
4736 have_5ghz_phy = 1;
4737 break;
4738 case B43_PHYTYPE_LP: //FIXME not always!
4739 #if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
4740 have_5ghz_phy = 1;
4741 #endif
4742 case B43_PHYTYPE_G:
4743 case B43_PHYTYPE_N:
4744 have_2ghz_phy = 1;
4745 break;
4746 default:
4747 B43_WARN_ON(1);
4748 }
4749 }
4750 if (dev->phy.type == B43_PHYTYPE_A) {
4751 /* FIXME */
4752 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4753 err = -EOPNOTSUPP;
4754 goto err_powerdown;
4755 }
4756 if (1 /* disable A-PHY */) {
4757 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4758 if (dev->phy.type != B43_PHYTYPE_N &&
4759 dev->phy.type != B43_PHYTYPE_LP) {
4760 have_2ghz_phy = 1;
4761 have_5ghz_phy = 0;
4762 }
4763 }
4764
4765 err = b43_phy_allocate(dev);
4766 if (err)
4767 goto err_powerdown;
4768
4769 dev->phy.gmode = have_2ghz_phy;
4770 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4771 b43_wireless_core_reset(dev, tmp);
4772
4773 err = b43_validate_chipaccess(dev);
4774 if (err)
4775 goto err_phy_free;
4776 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4777 if (err)
4778 goto err_phy_free;
4779
4780 /* Now set some default "current_dev" */
4781 if (!wl->current_dev)
4782 wl->current_dev = dev;
4783 INIT_WORK(&dev->restart_work, b43_chip_reset);
4784
4785 dev->phy.ops->switch_analog(dev, 0);
4786 ssb_device_disable(dev->dev, 0);
4787 ssb_bus_may_powerdown(bus);
4788
4789 out:
4790 return err;
4791
4792 err_phy_free:
4793 b43_phy_free(dev);
4794 err_powerdown:
4795 ssb_bus_may_powerdown(bus);
4796 return err;
4797 }
4798
4799 static void b43_one_core_detach(struct ssb_device *dev)
4800 {
4801 struct b43_wldev *wldev;
4802 struct b43_wl *wl;
4803
4804 /* Do not cancel ieee80211-workqueue based work here.
4805 * See comment in b43_remove(). */
4806
4807 wldev = ssb_get_drvdata(dev);
4808 wl = wldev->wl;
4809 b43_debugfs_remove_device(wldev);
4810 b43_wireless_core_detach(wldev);
4811 list_del(&wldev->list);
4812 wl->nr_devs--;
4813 ssb_set_drvdata(dev, NULL);
4814 kfree(wldev);
4815 }
4816
4817 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4818 {
4819 struct b43_wldev *wldev;
4820 struct pci_dev *pdev;
4821 int err = -ENOMEM;
4822
4823 if (!list_empty(&wl->devlist)) {
4824 /* We are not the first core on this chip. */
4825 pdev = (dev->bus->bustype == SSB_BUSTYPE_PCI) ? dev->bus->host_pci : NULL;
4826 /* Only special chips support more than one wireless
4827 * core, although some of the other chips have more than
4828 * one wireless core as well. Check for this and
4829 * bail out early.
4830 */
4831 if (!pdev ||
4832 ((pdev->device != 0x4321) &&
4833 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4834 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4835 return -ENODEV;
4836 }
4837 }
4838
4839 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4840 if (!wldev)
4841 goto out;
4842
4843 wldev->dev = dev;
4844 wldev->wl = wl;
4845 b43_set_status(wldev, B43_STAT_UNINIT);
4846 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4847 INIT_LIST_HEAD(&wldev->list);
4848
4849 err = b43_wireless_core_attach(wldev);
4850 if (err)
4851 goto err_kfree_wldev;
4852
4853 list_add(&wldev->list, &wl->devlist);
4854 wl->nr_devs++;
4855 ssb_set_drvdata(dev, wldev);
4856 b43_debugfs_add_device(wldev);
4857
4858 out:
4859 return err;
4860
4861 err_kfree_wldev:
4862 kfree(wldev);
4863 return err;
4864 }
4865
4866 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4867 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4868 (pdev->device == _device) && \
4869 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4870 (pdev->subsystem_device == _subdevice) )
4871
4872 static void b43_sprom_fixup(struct ssb_bus *bus)
4873 {
4874 struct pci_dev *pdev;
4875
4876 /* boardflags workarounds */
4877 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4878 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4879 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4880 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4881 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4882 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4883 if (bus->bustype == SSB_BUSTYPE_PCI) {
4884 pdev = bus->host_pci;
4885 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4886 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4887 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
4888 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4889 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4890 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4891 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4892 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4893 }
4894 }
4895
4896 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4897 {
4898 struct ieee80211_hw *hw = wl->hw;
4899
4900 ssb_set_devtypedata(dev, NULL);
4901 ieee80211_free_hw(hw);
4902 }
4903
4904 static int b43_wireless_init(struct ssb_device *dev)
4905 {
4906 struct ssb_sprom *sprom = &dev->bus->sprom;
4907 struct ieee80211_hw *hw;
4908 struct b43_wl *wl;
4909 int err = -ENOMEM;
4910
4911 b43_sprom_fixup(dev->bus);
4912
4913 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4914 if (!hw) {
4915 b43err(NULL, "Could not allocate ieee80211 device\n");
4916 goto out;
4917 }
4918 wl = hw_to_b43_wl(hw);
4919
4920 /* fill hw info */
4921 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4922 IEEE80211_HW_SIGNAL_DBM |
4923 IEEE80211_HW_NOISE_DBM;
4924
4925 hw->wiphy->interface_modes =
4926 BIT(NL80211_IFTYPE_AP) |
4927 BIT(NL80211_IFTYPE_MESH_POINT) |
4928 BIT(NL80211_IFTYPE_STATION) |
4929 BIT(NL80211_IFTYPE_WDS) |
4930 BIT(NL80211_IFTYPE_ADHOC);
4931
4932 hw->queues = modparam_qos ? 4 : 1;
4933 wl->mac80211_initially_registered_queues = hw->queues;
4934 hw->max_rates = 2;
4935 SET_IEEE80211_DEV(hw, dev->dev);
4936 if (is_valid_ether_addr(sprom->et1mac))
4937 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4938 else
4939 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4940
4941 /* Initialize struct b43_wl */
4942 wl->hw = hw;
4943 mutex_init(&wl->mutex);
4944 spin_lock_init(&wl->hardirq_lock);
4945 INIT_LIST_HEAD(&wl->devlist);
4946 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4947 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4948 INIT_WORK(&wl->tx_work, b43_tx_work);
4949 skb_queue_head_init(&wl->tx_queue);
4950
4951 ssb_set_devtypedata(dev, wl);
4952 b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
4953 dev->bus->chip_id, dev->id.revision);
4954 err = 0;
4955 out:
4956 return err;
4957 }
4958
4959 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4960 {
4961 struct b43_wl *wl;
4962 int err;
4963 int first = 0;
4964
4965 wl = ssb_get_devtypedata(dev);
4966 if (!wl) {
4967 /* Probing the first core. Must setup common struct b43_wl */
4968 first = 1;
4969 err = b43_wireless_init(dev);
4970 if (err)
4971 goto out;
4972 wl = ssb_get_devtypedata(dev);
4973 B43_WARN_ON(!wl);
4974 }
4975 err = b43_one_core_attach(dev, wl);
4976 if (err)
4977 goto err_wireless_exit;
4978
4979 if (first) {
4980 err = ieee80211_register_hw(wl->hw);
4981 if (err)
4982 goto err_one_core_detach;
4983 b43_leds_register(wl->current_dev);
4984 b43_rng_init(wl);
4985 }
4986
4987 out:
4988 return err;
4989
4990 err_one_core_detach:
4991 b43_one_core_detach(dev);
4992 err_wireless_exit:
4993 if (first)
4994 b43_wireless_exit(dev, wl);
4995 return err;
4996 }
4997
4998 static void b43_remove(struct ssb_device *dev)
4999 {
5000 struct b43_wl *wl = ssb_get_devtypedata(dev);
5001 struct b43_wldev *wldev = ssb_get_drvdata(dev);
5002
5003 /* We must cancel any work here before unregistering from ieee80211,
5004 * as the ieee80211 unreg will destroy the workqueue. */
5005 cancel_work_sync(&wldev->restart_work);
5006
5007 B43_WARN_ON(!wl);
5008 if (wl->current_dev == wldev) {
5009 /* Restore the queues count before unregistering, because firmware detect
5010 * might have modified it. Restoring is important, so the networking
5011 * stack can properly free resources. */
5012 wl->hw->queues = wl->mac80211_initially_registered_queues;
5013 b43_leds_stop(wldev);
5014 ieee80211_unregister_hw(wl->hw);
5015 }
5016
5017 b43_one_core_detach(dev);
5018
5019 if (list_empty(&wl->devlist)) {
5020 b43_rng_exit(wl);
5021 b43_leds_unregister(wl);
5022 /* Last core on the chip unregistered.
5023 * We can destroy common struct b43_wl.
5024 */
5025 b43_wireless_exit(dev, wl);
5026 }
5027 }
5028
5029 /* Perform a hardware reset. This can be called from any context. */
5030 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5031 {
5032 /* Must avoid requeueing, if we are in shutdown. */
5033 if (b43_status(dev) < B43_STAT_INITIALIZED)
5034 return;
5035 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5036 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5037 }
5038
5039 static struct ssb_driver b43_ssb_driver = {
5040 .name = KBUILD_MODNAME,
5041 .id_table = b43_ssb_tbl,
5042 .probe = b43_probe,
5043 .remove = b43_remove,
5044 };
5045
5046 static void b43_print_driverinfo(void)
5047 {
5048 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5049 *feat_leds = "", *feat_sdio = "";
5050
5051 #ifdef CONFIG_B43_PCI_AUTOSELECT
5052 feat_pci = "P";
5053 #endif
5054 #ifdef CONFIG_B43_PCMCIA
5055 feat_pcmcia = "M";
5056 #endif
5057 #ifdef CONFIG_B43_NPHY
5058 feat_nphy = "N";
5059 #endif
5060 #ifdef CONFIG_B43_LEDS
5061 feat_leds = "L";
5062 #endif
5063 #ifdef CONFIG_B43_SDIO
5064 feat_sdio = "S";
5065 #endif
5066 printk(KERN_INFO "Broadcom 43xx driver loaded "
5067 "[ Features: %s%s%s%s%s, Firmware-ID: "
5068 B43_SUPPORTED_FIRMWARE_ID " ]\n",
5069 feat_pci, feat_pcmcia, feat_nphy,
5070 feat_leds, feat_sdio);
5071 }
5072
5073 static int __init b43_init(void)
5074 {
5075 int err;
5076
5077 b43_debugfs_init();
5078 err = b43_pcmcia_init();
5079 if (err)
5080 goto err_dfs_exit;
5081 err = b43_sdio_init();
5082 if (err)
5083 goto err_pcmcia_exit;
5084 err = ssb_driver_register(&b43_ssb_driver);
5085 if (err)
5086 goto err_sdio_exit;
5087 b43_print_driverinfo();
5088
5089 return err;
5090
5091 err_sdio_exit:
5092 b43_sdio_exit();
5093 err_pcmcia_exit:
5094 b43_pcmcia_exit();
5095 err_dfs_exit:
5096 b43_debugfs_exit();
5097 return err;
5098 }
5099
5100 static void __exit b43_exit(void)
5101 {
5102 ssb_driver_unregister(&b43_ssb_driver);
5103 b43_sdio_exit();
5104 b43_pcmcia_exit();
5105 b43_debugfs_exit();
5106 }
5107
5108 module_init(b43_init)
5109 module_exit(b43_exit)
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