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[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / b43 / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005-2009 Michael Buesch <mb@bu3sch.de>
8 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10
11 SDIO support
12 Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
13
14 Some parts of the code in this file are derived from the ipw2200
15 driver Copyright(c) 2003 - 2004 Intel Corporation.
16
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License, or
20 (at your option) any later version.
21
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
26
27 You should have received a copy of the GNU General Public License
28 along with this program; see the file COPYING. If not, write to
29 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
30 Boston, MA 02110-1301, USA.
31
32 */
33
34 #include <linux/delay.h>
35 #include <linux/init.h>
36 #include <linux/moduleparam.h>
37 #include <linux/if_arp.h>
38 #include <linux/etherdevice.h>
39 #include <linux/firmware.h>
40 #include <linux/wireless.h>
41 #include <linux/workqueue.h>
42 #include <linux/skbuff.h>
43 #include <linux/io.h>
44 #include <linux/dma-mapping.h>
45 #include <linux/slab.h>
46 #include <asm/unaligned.h>
47
48 #include "b43.h"
49 #include "main.h"
50 #include "debugfs.h"
51 #include "phy_common.h"
52 #include "phy_g.h"
53 #include "phy_n.h"
54 #include "dma.h"
55 #include "pio.h"
56 #include "sysfs.h"
57 #include "xmit.h"
58 #include "lo.h"
59 #include "pcmcia.h"
60 #include "sdio.h"
61 #include <linux/mmc/sdio_func.h>
62
63 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
64 MODULE_AUTHOR("Martin Langer");
65 MODULE_AUTHOR("Stefano Brivio");
66 MODULE_AUTHOR("Michael Buesch");
67 MODULE_AUTHOR("Gábor Stefanik");
68 MODULE_LICENSE("GPL");
69
70 MODULE_FIRMWARE(B43_SUPPORTED_FIRMWARE_ID);
71 MODULE_FIRMWARE("b43/ucode11.fw");
72 MODULE_FIRMWARE("b43/ucode13.fw");
73 MODULE_FIRMWARE("b43/ucode14.fw");
74 MODULE_FIRMWARE("b43/ucode15.fw");
75 MODULE_FIRMWARE("b43/ucode5.fw");
76 MODULE_FIRMWARE("b43/ucode9.fw");
77
78 static int modparam_bad_frames_preempt;
79 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
80 MODULE_PARM_DESC(bad_frames_preempt,
81 "enable(1) / disable(0) Bad Frames Preemption");
82
83 static char modparam_fwpostfix[16];
84 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
85 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
86
87 static int modparam_hwpctl;
88 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
89 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
90
91 static int modparam_nohwcrypt;
92 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
93 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
94
95 static int modparam_hwtkip;
96 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
97 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
98
99 static int modparam_qos = 1;
100 module_param_named(qos, modparam_qos, int, 0444);
101 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
102
103 static int modparam_btcoex = 1;
104 module_param_named(btcoex, modparam_btcoex, int, 0444);
105 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
106
107 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
108 module_param_named(verbose, b43_modparam_verbose, int, 0644);
109 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
110
111 int b43_modparam_pio = B43_PIO_DEFAULT;
112 module_param_named(pio, b43_modparam_pio, int, 0644);
113 MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
114
115 static const struct ssb_device_id b43_ssb_tbl[] = {
116 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
117 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
118 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
119 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
120 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
121 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
122 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
123 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
124 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
125 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
126 SSB_DEVTABLE_END
127 };
128
129 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
130
131 /* Channel and ratetables are shared for all devices.
132 * They can't be const, because ieee80211 puts some precalculated
133 * data in there. This data is the same for all devices, so we don't
134 * get concurrency issues */
135 #define RATETAB_ENT(_rateid, _flags) \
136 { \
137 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
138 .hw_value = (_rateid), \
139 .flags = (_flags), \
140 }
141
142 /*
143 * NOTE: When changing this, sync with xmit.c's
144 * b43_plcp_get_bitrate_idx_* functions!
145 */
146 static struct ieee80211_rate __b43_ratetable[] = {
147 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
148 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
149 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
150 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
151 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
152 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
153 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
154 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
155 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
156 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
157 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
158 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
159 };
160
161 #define b43_a_ratetable (__b43_ratetable + 4)
162 #define b43_a_ratetable_size 8
163 #define b43_b_ratetable (__b43_ratetable + 0)
164 #define b43_b_ratetable_size 4
165 #define b43_g_ratetable (__b43_ratetable + 0)
166 #define b43_g_ratetable_size 12
167
168 #define CHAN4G(_channel, _freq, _flags) { \
169 .band = IEEE80211_BAND_2GHZ, \
170 .center_freq = (_freq), \
171 .hw_value = (_channel), \
172 .flags = (_flags), \
173 .max_antenna_gain = 0, \
174 .max_power = 30, \
175 }
176 static struct ieee80211_channel b43_2ghz_chantable[] = {
177 CHAN4G(1, 2412, 0),
178 CHAN4G(2, 2417, 0),
179 CHAN4G(3, 2422, 0),
180 CHAN4G(4, 2427, 0),
181 CHAN4G(5, 2432, 0),
182 CHAN4G(6, 2437, 0),
183 CHAN4G(7, 2442, 0),
184 CHAN4G(8, 2447, 0),
185 CHAN4G(9, 2452, 0),
186 CHAN4G(10, 2457, 0),
187 CHAN4G(11, 2462, 0),
188 CHAN4G(12, 2467, 0),
189 CHAN4G(13, 2472, 0),
190 CHAN4G(14, 2484, 0),
191 };
192 #undef CHAN4G
193
194 #define CHAN5G(_channel, _flags) { \
195 .band = IEEE80211_BAND_5GHZ, \
196 .center_freq = 5000 + (5 * (_channel)), \
197 .hw_value = (_channel), \
198 .flags = (_flags), \
199 .max_antenna_gain = 0, \
200 .max_power = 30, \
201 }
202 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
203 CHAN5G(32, 0), CHAN5G(34, 0),
204 CHAN5G(36, 0), CHAN5G(38, 0),
205 CHAN5G(40, 0), CHAN5G(42, 0),
206 CHAN5G(44, 0), CHAN5G(46, 0),
207 CHAN5G(48, 0), CHAN5G(50, 0),
208 CHAN5G(52, 0), CHAN5G(54, 0),
209 CHAN5G(56, 0), CHAN5G(58, 0),
210 CHAN5G(60, 0), CHAN5G(62, 0),
211 CHAN5G(64, 0), CHAN5G(66, 0),
212 CHAN5G(68, 0), CHAN5G(70, 0),
213 CHAN5G(72, 0), CHAN5G(74, 0),
214 CHAN5G(76, 0), CHAN5G(78, 0),
215 CHAN5G(80, 0), CHAN5G(82, 0),
216 CHAN5G(84, 0), CHAN5G(86, 0),
217 CHAN5G(88, 0), CHAN5G(90, 0),
218 CHAN5G(92, 0), CHAN5G(94, 0),
219 CHAN5G(96, 0), CHAN5G(98, 0),
220 CHAN5G(100, 0), CHAN5G(102, 0),
221 CHAN5G(104, 0), CHAN5G(106, 0),
222 CHAN5G(108, 0), CHAN5G(110, 0),
223 CHAN5G(112, 0), CHAN5G(114, 0),
224 CHAN5G(116, 0), CHAN5G(118, 0),
225 CHAN5G(120, 0), CHAN5G(122, 0),
226 CHAN5G(124, 0), CHAN5G(126, 0),
227 CHAN5G(128, 0), CHAN5G(130, 0),
228 CHAN5G(132, 0), CHAN5G(134, 0),
229 CHAN5G(136, 0), CHAN5G(138, 0),
230 CHAN5G(140, 0), CHAN5G(142, 0),
231 CHAN5G(144, 0), CHAN5G(145, 0),
232 CHAN5G(146, 0), CHAN5G(147, 0),
233 CHAN5G(148, 0), CHAN5G(149, 0),
234 CHAN5G(150, 0), CHAN5G(151, 0),
235 CHAN5G(152, 0), CHAN5G(153, 0),
236 CHAN5G(154, 0), CHAN5G(155, 0),
237 CHAN5G(156, 0), CHAN5G(157, 0),
238 CHAN5G(158, 0), CHAN5G(159, 0),
239 CHAN5G(160, 0), CHAN5G(161, 0),
240 CHAN5G(162, 0), CHAN5G(163, 0),
241 CHAN5G(164, 0), CHAN5G(165, 0),
242 CHAN5G(166, 0), CHAN5G(168, 0),
243 CHAN5G(170, 0), CHAN5G(172, 0),
244 CHAN5G(174, 0), CHAN5G(176, 0),
245 CHAN5G(178, 0), CHAN5G(180, 0),
246 CHAN5G(182, 0), CHAN5G(184, 0),
247 CHAN5G(186, 0), CHAN5G(188, 0),
248 CHAN5G(190, 0), CHAN5G(192, 0),
249 CHAN5G(194, 0), CHAN5G(196, 0),
250 CHAN5G(198, 0), CHAN5G(200, 0),
251 CHAN5G(202, 0), CHAN5G(204, 0),
252 CHAN5G(206, 0), CHAN5G(208, 0),
253 CHAN5G(210, 0), CHAN5G(212, 0),
254 CHAN5G(214, 0), CHAN5G(216, 0),
255 CHAN5G(218, 0), CHAN5G(220, 0),
256 CHAN5G(222, 0), CHAN5G(224, 0),
257 CHAN5G(226, 0), CHAN5G(228, 0),
258 };
259
260 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
261 CHAN5G(34, 0), CHAN5G(36, 0),
262 CHAN5G(38, 0), CHAN5G(40, 0),
263 CHAN5G(42, 0), CHAN5G(44, 0),
264 CHAN5G(46, 0), CHAN5G(48, 0),
265 CHAN5G(52, 0), CHAN5G(56, 0),
266 CHAN5G(60, 0), CHAN5G(64, 0),
267 CHAN5G(100, 0), CHAN5G(104, 0),
268 CHAN5G(108, 0), CHAN5G(112, 0),
269 CHAN5G(116, 0), CHAN5G(120, 0),
270 CHAN5G(124, 0), CHAN5G(128, 0),
271 CHAN5G(132, 0), CHAN5G(136, 0),
272 CHAN5G(140, 0), CHAN5G(149, 0),
273 CHAN5G(153, 0), CHAN5G(157, 0),
274 CHAN5G(161, 0), CHAN5G(165, 0),
275 CHAN5G(184, 0), CHAN5G(188, 0),
276 CHAN5G(192, 0), CHAN5G(196, 0),
277 CHAN5G(200, 0), CHAN5G(204, 0),
278 CHAN5G(208, 0), CHAN5G(212, 0),
279 CHAN5G(216, 0),
280 };
281 #undef CHAN5G
282
283 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
284 .band = IEEE80211_BAND_5GHZ,
285 .channels = b43_5ghz_nphy_chantable,
286 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
287 .bitrates = b43_a_ratetable,
288 .n_bitrates = b43_a_ratetable_size,
289 };
290
291 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
292 .band = IEEE80211_BAND_5GHZ,
293 .channels = b43_5ghz_aphy_chantable,
294 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
295 .bitrates = b43_a_ratetable,
296 .n_bitrates = b43_a_ratetable_size,
297 };
298
299 static struct ieee80211_supported_band b43_band_2GHz = {
300 .band = IEEE80211_BAND_2GHZ,
301 .channels = b43_2ghz_chantable,
302 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
303 .bitrates = b43_g_ratetable,
304 .n_bitrates = b43_g_ratetable_size,
305 };
306
307 static void b43_wireless_core_exit(struct b43_wldev *dev);
308 static int b43_wireless_core_init(struct b43_wldev *dev);
309 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
310 static int b43_wireless_core_start(struct b43_wldev *dev);
311
312 static int b43_ratelimit(struct b43_wl *wl)
313 {
314 if (!wl || !wl->current_dev)
315 return 1;
316 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
317 return 1;
318 /* We are up and running.
319 * Ratelimit the messages to avoid DoS over the net. */
320 return net_ratelimit();
321 }
322
323 void b43info(struct b43_wl *wl, const char *fmt, ...)
324 {
325 va_list args;
326
327 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
328 return;
329 if (!b43_ratelimit(wl))
330 return;
331 va_start(args, fmt);
332 printk(KERN_INFO "b43-%s: ",
333 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
334 vprintk(fmt, args);
335 va_end(args);
336 }
337
338 void b43err(struct b43_wl *wl, const char *fmt, ...)
339 {
340 va_list args;
341
342 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
343 return;
344 if (!b43_ratelimit(wl))
345 return;
346 va_start(args, fmt);
347 printk(KERN_ERR "b43-%s ERROR: ",
348 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
349 vprintk(fmt, args);
350 va_end(args);
351 }
352
353 void b43warn(struct b43_wl *wl, const char *fmt, ...)
354 {
355 va_list args;
356
357 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
358 return;
359 if (!b43_ratelimit(wl))
360 return;
361 va_start(args, fmt);
362 printk(KERN_WARNING "b43-%s warning: ",
363 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
364 vprintk(fmt, args);
365 va_end(args);
366 }
367
368 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
369 {
370 va_list args;
371
372 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
373 return;
374 va_start(args, fmt);
375 printk(KERN_DEBUG "b43-%s debug: ",
376 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
377 vprintk(fmt, args);
378 va_end(args);
379 }
380
381 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
382 {
383 u32 macctl;
384
385 B43_WARN_ON(offset % 4 != 0);
386
387 macctl = b43_read32(dev, B43_MMIO_MACCTL);
388 if (macctl & B43_MACCTL_BE)
389 val = swab32(val);
390
391 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
392 mmiowb();
393 b43_write32(dev, B43_MMIO_RAM_DATA, val);
394 }
395
396 static inline void b43_shm_control_word(struct b43_wldev *dev,
397 u16 routing, u16 offset)
398 {
399 u32 control;
400
401 /* "offset" is the WORD offset. */
402 control = routing;
403 control <<= 16;
404 control |= offset;
405 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
406 }
407
408 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
409 {
410 u32 ret;
411
412 if (routing == B43_SHM_SHARED) {
413 B43_WARN_ON(offset & 0x0001);
414 if (offset & 0x0003) {
415 /* Unaligned access */
416 b43_shm_control_word(dev, routing, offset >> 2);
417 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
418 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
419 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
420
421 goto out;
422 }
423 offset >>= 2;
424 }
425 b43_shm_control_word(dev, routing, offset);
426 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
427 out:
428 return ret;
429 }
430
431 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
432 {
433 u16 ret;
434
435 if (routing == B43_SHM_SHARED) {
436 B43_WARN_ON(offset & 0x0001);
437 if (offset & 0x0003) {
438 /* Unaligned access */
439 b43_shm_control_word(dev, routing, offset >> 2);
440 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
441
442 goto out;
443 }
444 offset >>= 2;
445 }
446 b43_shm_control_word(dev, routing, offset);
447 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
448 out:
449 return ret;
450 }
451
452 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
453 {
454 if (routing == B43_SHM_SHARED) {
455 B43_WARN_ON(offset & 0x0001);
456 if (offset & 0x0003) {
457 /* Unaligned access */
458 b43_shm_control_word(dev, routing, offset >> 2);
459 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
460 value & 0xFFFF);
461 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
462 b43_write16(dev, B43_MMIO_SHM_DATA,
463 (value >> 16) & 0xFFFF);
464 return;
465 }
466 offset >>= 2;
467 }
468 b43_shm_control_word(dev, routing, offset);
469 b43_write32(dev, B43_MMIO_SHM_DATA, value);
470 }
471
472 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
473 {
474 if (routing == B43_SHM_SHARED) {
475 B43_WARN_ON(offset & 0x0001);
476 if (offset & 0x0003) {
477 /* Unaligned access */
478 b43_shm_control_word(dev, routing, offset >> 2);
479 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
480 return;
481 }
482 offset >>= 2;
483 }
484 b43_shm_control_word(dev, routing, offset);
485 b43_write16(dev, B43_MMIO_SHM_DATA, value);
486 }
487
488 /* Read HostFlags */
489 u64 b43_hf_read(struct b43_wldev *dev)
490 {
491 u64 ret;
492
493 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
494 ret <<= 16;
495 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
496 ret <<= 16;
497 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
498
499 return ret;
500 }
501
502 /* Write HostFlags */
503 void b43_hf_write(struct b43_wldev *dev, u64 value)
504 {
505 u16 lo, mi, hi;
506
507 lo = (value & 0x00000000FFFFULL);
508 mi = (value & 0x0000FFFF0000ULL) >> 16;
509 hi = (value & 0xFFFF00000000ULL) >> 32;
510 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
511 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
512 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
513 }
514
515 /* Read the firmware capabilities bitmask (Opensource firmware only) */
516 static u16 b43_fwcapa_read(struct b43_wldev *dev)
517 {
518 B43_WARN_ON(!dev->fw.opensource);
519 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
520 }
521
522 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
523 {
524 u32 low, high;
525
526 B43_WARN_ON(dev->dev->id.revision < 3);
527
528 /* The hardware guarantees us an atomic read, if we
529 * read the low register first. */
530 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
531 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
532
533 *tsf = high;
534 *tsf <<= 32;
535 *tsf |= low;
536 }
537
538 static void b43_time_lock(struct b43_wldev *dev)
539 {
540 u32 macctl;
541
542 macctl = b43_read32(dev, B43_MMIO_MACCTL);
543 macctl |= B43_MACCTL_TBTTHOLD;
544 b43_write32(dev, B43_MMIO_MACCTL, macctl);
545 /* Commit the write */
546 b43_read32(dev, B43_MMIO_MACCTL);
547 }
548
549 static void b43_time_unlock(struct b43_wldev *dev)
550 {
551 u32 macctl;
552
553 macctl = b43_read32(dev, B43_MMIO_MACCTL);
554 macctl &= ~B43_MACCTL_TBTTHOLD;
555 b43_write32(dev, B43_MMIO_MACCTL, macctl);
556 /* Commit the write */
557 b43_read32(dev, B43_MMIO_MACCTL);
558 }
559
560 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
561 {
562 u32 low, high;
563
564 B43_WARN_ON(dev->dev->id.revision < 3);
565
566 low = tsf;
567 high = (tsf >> 32);
568 /* The hardware guarantees us an atomic write, if we
569 * write the low register first. */
570 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
571 mmiowb();
572 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
573 mmiowb();
574 }
575
576 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
577 {
578 b43_time_lock(dev);
579 b43_tsf_write_locked(dev, tsf);
580 b43_time_unlock(dev);
581 }
582
583 static
584 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
585 {
586 static const u8 zero_addr[ETH_ALEN] = { 0 };
587 u16 data;
588
589 if (!mac)
590 mac = zero_addr;
591
592 offset |= 0x0020;
593 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
594
595 data = mac[0];
596 data |= mac[1] << 8;
597 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
598 data = mac[2];
599 data |= mac[3] << 8;
600 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
601 data = mac[4];
602 data |= mac[5] << 8;
603 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
604 }
605
606 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
607 {
608 const u8 *mac;
609 const u8 *bssid;
610 u8 mac_bssid[ETH_ALEN * 2];
611 int i;
612 u32 tmp;
613
614 bssid = dev->wl->bssid;
615 mac = dev->wl->mac_addr;
616
617 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
618
619 memcpy(mac_bssid, mac, ETH_ALEN);
620 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
621
622 /* Write our MAC address and BSSID to template ram */
623 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
624 tmp = (u32) (mac_bssid[i + 0]);
625 tmp |= (u32) (mac_bssid[i + 1]) << 8;
626 tmp |= (u32) (mac_bssid[i + 2]) << 16;
627 tmp |= (u32) (mac_bssid[i + 3]) << 24;
628 b43_ram_write(dev, 0x20 + i, tmp);
629 }
630 }
631
632 static void b43_upload_card_macaddress(struct b43_wldev *dev)
633 {
634 b43_write_mac_bssid_templates(dev);
635 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
636 }
637
638 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
639 {
640 /* slot_time is in usec. */
641 /* This test used to exit for all but a G PHY. */
642 if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
643 return;
644 b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
645 /* Shared memory location 0x0010 is the slot time and should be
646 * set to slot_time; however, this register is initially 0 and changing
647 * the value adversely affects the transmit rate for BCM4311
648 * devices. Until this behavior is unterstood, delete this step
649 *
650 * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
651 */
652 }
653
654 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
655 {
656 b43_set_slot_time(dev, 9);
657 }
658
659 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
660 {
661 b43_set_slot_time(dev, 20);
662 }
663
664 /* DummyTransmission function, as documented on
665 * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
666 */
667 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
668 {
669 struct b43_phy *phy = &dev->phy;
670 unsigned int i, max_loop;
671 u16 value;
672 u32 buffer[5] = {
673 0x00000000,
674 0x00D40000,
675 0x00000000,
676 0x01000000,
677 0x00000000,
678 };
679
680 if (ofdm) {
681 max_loop = 0x1E;
682 buffer[0] = 0x000201CC;
683 } else {
684 max_loop = 0xFA;
685 buffer[0] = 0x000B846E;
686 }
687
688 for (i = 0; i < 5; i++)
689 b43_ram_write(dev, i * 4, buffer[i]);
690
691 b43_write16(dev, 0x0568, 0x0000);
692 if (dev->dev->id.revision < 11)
693 b43_write16(dev, 0x07C0, 0x0000);
694 else
695 b43_write16(dev, 0x07C0, 0x0100);
696 value = (ofdm ? 0x41 : 0x40);
697 b43_write16(dev, 0x050C, value);
698 if ((phy->type == B43_PHYTYPE_N) || (phy->type == B43_PHYTYPE_LP))
699 b43_write16(dev, 0x0514, 0x1A02);
700 b43_write16(dev, 0x0508, 0x0000);
701 b43_write16(dev, 0x050A, 0x0000);
702 b43_write16(dev, 0x054C, 0x0000);
703 b43_write16(dev, 0x056A, 0x0014);
704 b43_write16(dev, 0x0568, 0x0826);
705 b43_write16(dev, 0x0500, 0x0000);
706 if (!pa_on && (phy->type == B43_PHYTYPE_N)) {
707 //SPEC TODO
708 }
709
710 switch (phy->type) {
711 case B43_PHYTYPE_N:
712 b43_write16(dev, 0x0502, 0x00D0);
713 break;
714 case B43_PHYTYPE_LP:
715 b43_write16(dev, 0x0502, 0x0050);
716 break;
717 default:
718 b43_write16(dev, 0x0502, 0x0030);
719 }
720
721 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
722 b43_radio_write16(dev, 0x0051, 0x0017);
723 for (i = 0x00; i < max_loop; i++) {
724 value = b43_read16(dev, 0x050E);
725 if (value & 0x0080)
726 break;
727 udelay(10);
728 }
729 for (i = 0x00; i < 0x0A; i++) {
730 value = b43_read16(dev, 0x050E);
731 if (value & 0x0400)
732 break;
733 udelay(10);
734 }
735 for (i = 0x00; i < 0x19; i++) {
736 value = b43_read16(dev, 0x0690);
737 if (!(value & 0x0100))
738 break;
739 udelay(10);
740 }
741 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
742 b43_radio_write16(dev, 0x0051, 0x0037);
743 }
744
745 static void key_write(struct b43_wldev *dev,
746 u8 index, u8 algorithm, const u8 *key)
747 {
748 unsigned int i;
749 u32 offset;
750 u16 value;
751 u16 kidx;
752
753 /* Key index/algo block */
754 kidx = b43_kidx_to_fw(dev, index);
755 value = ((kidx << 4) | algorithm);
756 b43_shm_write16(dev, B43_SHM_SHARED,
757 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
758
759 /* Write the key to the Key Table Pointer offset */
760 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
761 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
762 value = key[i];
763 value |= (u16) (key[i + 1]) << 8;
764 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
765 }
766 }
767
768 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
769 {
770 u32 addrtmp[2] = { 0, 0, };
771 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
772
773 if (b43_new_kidx_api(dev))
774 pairwise_keys_start = B43_NR_GROUP_KEYS;
775
776 B43_WARN_ON(index < pairwise_keys_start);
777 /* We have four default TX keys and possibly four default RX keys.
778 * Physical mac 0 is mapped to physical key 4 or 8, depending
779 * on the firmware version.
780 * So we must adjust the index here.
781 */
782 index -= pairwise_keys_start;
783 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
784
785 if (addr) {
786 addrtmp[0] = addr[0];
787 addrtmp[0] |= ((u32) (addr[1]) << 8);
788 addrtmp[0] |= ((u32) (addr[2]) << 16);
789 addrtmp[0] |= ((u32) (addr[3]) << 24);
790 addrtmp[1] = addr[4];
791 addrtmp[1] |= ((u32) (addr[5]) << 8);
792 }
793
794 /* Receive match transmitter address (RCMTA) mechanism */
795 b43_shm_write32(dev, B43_SHM_RCMTA,
796 (index * 2) + 0, addrtmp[0]);
797 b43_shm_write16(dev, B43_SHM_RCMTA,
798 (index * 2) + 1, addrtmp[1]);
799 }
800
801 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
802 * When a packet is received, the iv32 is checked.
803 * - if it doesn't the packet is returned without modification (and software
804 * decryption can be done). That's what happen when iv16 wrap.
805 * - if it does, the rc4 key is computed, and decryption is tried.
806 * Either it will success and B43_RX_MAC_DEC is returned,
807 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
808 * and the packet is not usable (it got modified by the ucode).
809 * So in order to never have B43_RX_MAC_DECERR, we should provide
810 * a iv32 and phase1key that match. Because we drop packets in case of
811 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
812 * packets will be lost without higher layer knowing (ie no resync possible
813 * until next wrap).
814 *
815 * NOTE : this should support 50 key like RCMTA because
816 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
817 */
818 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
819 u16 *phase1key)
820 {
821 unsigned int i;
822 u32 offset;
823 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
824
825 if (!modparam_hwtkip)
826 return;
827
828 if (b43_new_kidx_api(dev))
829 pairwise_keys_start = B43_NR_GROUP_KEYS;
830
831 B43_WARN_ON(index < pairwise_keys_start);
832 /* We have four default TX keys and possibly four default RX keys.
833 * Physical mac 0 is mapped to physical key 4 or 8, depending
834 * on the firmware version.
835 * So we must adjust the index here.
836 */
837 index -= pairwise_keys_start;
838 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
839
840 if (b43_debug(dev, B43_DBG_KEYS)) {
841 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
842 index, iv32);
843 }
844 /* Write the key to the RX tkip shared mem */
845 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
846 for (i = 0; i < 10; i += 2) {
847 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
848 phase1key ? phase1key[i / 2] : 0);
849 }
850 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
851 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
852 }
853
854 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
855 struct ieee80211_vif *vif,
856 struct ieee80211_key_conf *keyconf,
857 struct ieee80211_sta *sta,
858 u32 iv32, u16 *phase1key)
859 {
860 struct b43_wl *wl = hw_to_b43_wl(hw);
861 struct b43_wldev *dev;
862 int index = keyconf->hw_key_idx;
863
864 if (B43_WARN_ON(!modparam_hwtkip))
865 return;
866
867 /* This is only called from the RX path through mac80211, where
868 * our mutex is already locked. */
869 B43_WARN_ON(!mutex_is_locked(&wl->mutex));
870 dev = wl->current_dev;
871 B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
872
873 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
874
875 rx_tkip_phase1_write(dev, index, iv32, phase1key);
876 /* only pairwise TKIP keys are supported right now */
877 if (WARN_ON(!sta))
878 return;
879 keymac_write(dev, index, sta->addr);
880 }
881
882 static void do_key_write(struct b43_wldev *dev,
883 u8 index, u8 algorithm,
884 const u8 *key, size_t key_len, const u8 *mac_addr)
885 {
886 u8 buf[B43_SEC_KEYSIZE] = { 0, };
887 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
888
889 if (b43_new_kidx_api(dev))
890 pairwise_keys_start = B43_NR_GROUP_KEYS;
891
892 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
893 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
894
895 if (index >= pairwise_keys_start)
896 keymac_write(dev, index, NULL); /* First zero out mac. */
897 if (algorithm == B43_SEC_ALGO_TKIP) {
898 /*
899 * We should provide an initial iv32, phase1key pair.
900 * We could start with iv32=0 and compute the corresponding
901 * phase1key, but this means calling ieee80211_get_tkip_key
902 * with a fake skb (or export other tkip function).
903 * Because we are lazy we hope iv32 won't start with
904 * 0xffffffff and let's b43_op_update_tkip_key provide a
905 * correct pair.
906 */
907 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
908 } else if (index >= pairwise_keys_start) /* clear it */
909 rx_tkip_phase1_write(dev, index, 0, NULL);
910 if (key)
911 memcpy(buf, key, key_len);
912 key_write(dev, index, algorithm, buf);
913 if (index >= pairwise_keys_start)
914 keymac_write(dev, index, mac_addr);
915
916 dev->key[index].algorithm = algorithm;
917 }
918
919 static int b43_key_write(struct b43_wldev *dev,
920 int index, u8 algorithm,
921 const u8 *key, size_t key_len,
922 const u8 *mac_addr,
923 struct ieee80211_key_conf *keyconf)
924 {
925 int i;
926 int pairwise_keys_start;
927
928 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
929 * - Temporal Encryption Key (128 bits)
930 * - Temporal Authenticator Tx MIC Key (64 bits)
931 * - Temporal Authenticator Rx MIC Key (64 bits)
932 *
933 * Hardware only store TEK
934 */
935 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
936 key_len = 16;
937 if (key_len > B43_SEC_KEYSIZE)
938 return -EINVAL;
939 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
940 /* Check that we don't already have this key. */
941 B43_WARN_ON(dev->key[i].keyconf == keyconf);
942 }
943 if (index < 0) {
944 /* Pairwise key. Get an empty slot for the key. */
945 if (b43_new_kidx_api(dev))
946 pairwise_keys_start = B43_NR_GROUP_KEYS;
947 else
948 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
949 for (i = pairwise_keys_start;
950 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
951 i++) {
952 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
953 if (!dev->key[i].keyconf) {
954 /* found empty */
955 index = i;
956 break;
957 }
958 }
959 if (index < 0) {
960 b43warn(dev->wl, "Out of hardware key memory\n");
961 return -ENOSPC;
962 }
963 } else
964 B43_WARN_ON(index > 3);
965
966 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
967 if ((index <= 3) && !b43_new_kidx_api(dev)) {
968 /* Default RX key */
969 B43_WARN_ON(mac_addr);
970 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
971 }
972 keyconf->hw_key_idx = index;
973 dev->key[index].keyconf = keyconf;
974
975 return 0;
976 }
977
978 static int b43_key_clear(struct b43_wldev *dev, int index)
979 {
980 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
981 return -EINVAL;
982 do_key_write(dev, index, B43_SEC_ALGO_NONE,
983 NULL, B43_SEC_KEYSIZE, NULL);
984 if ((index <= 3) && !b43_new_kidx_api(dev)) {
985 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
986 NULL, B43_SEC_KEYSIZE, NULL);
987 }
988 dev->key[index].keyconf = NULL;
989
990 return 0;
991 }
992
993 static void b43_clear_keys(struct b43_wldev *dev)
994 {
995 int i, count;
996
997 if (b43_new_kidx_api(dev))
998 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
999 else
1000 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1001 for (i = 0; i < count; i++)
1002 b43_key_clear(dev, i);
1003 }
1004
1005 static void b43_dump_keymemory(struct b43_wldev *dev)
1006 {
1007 unsigned int i, index, count, offset, pairwise_keys_start;
1008 u8 mac[ETH_ALEN];
1009 u16 algo;
1010 u32 rcmta0;
1011 u16 rcmta1;
1012 u64 hf;
1013 struct b43_key *key;
1014
1015 if (!b43_debug(dev, B43_DBG_KEYS))
1016 return;
1017
1018 hf = b43_hf_read(dev);
1019 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1020 !!(hf & B43_HF_USEDEFKEYS));
1021 if (b43_new_kidx_api(dev)) {
1022 pairwise_keys_start = B43_NR_GROUP_KEYS;
1023 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1024 } else {
1025 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1026 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1027 }
1028 for (index = 0; index < count; index++) {
1029 key = &(dev->key[index]);
1030 printk(KERN_DEBUG "Key slot %02u: %s",
1031 index, (key->keyconf == NULL) ? " " : "*");
1032 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1033 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1034 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1035 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1036 }
1037
1038 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1039 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1040 printk(" Algo: %04X/%02X", algo, key->algorithm);
1041
1042 if (index >= pairwise_keys_start) {
1043 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1044 printk(" TKIP: ");
1045 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1046 for (i = 0; i < 14; i += 2) {
1047 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1048 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1049 }
1050 }
1051 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1052 ((index - pairwise_keys_start) * 2) + 0);
1053 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1054 ((index - pairwise_keys_start) * 2) + 1);
1055 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1056 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1057 printk(" MAC: %pM", mac);
1058 } else
1059 printk(" DEFAULT KEY");
1060 printk("\n");
1061 }
1062 }
1063
1064 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1065 {
1066 u32 macctl;
1067 u16 ucstat;
1068 bool hwps;
1069 bool awake;
1070 int i;
1071
1072 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1073 (ps_flags & B43_PS_DISABLED));
1074 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1075
1076 if (ps_flags & B43_PS_ENABLED) {
1077 hwps = 1;
1078 } else if (ps_flags & B43_PS_DISABLED) {
1079 hwps = 0;
1080 } else {
1081 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1082 // and thus is not an AP and we are associated, set bit 25
1083 }
1084 if (ps_flags & B43_PS_AWAKE) {
1085 awake = 1;
1086 } else if (ps_flags & B43_PS_ASLEEP) {
1087 awake = 0;
1088 } else {
1089 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1090 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1091 // successful, set bit26
1092 }
1093
1094 /* FIXME: For now we force awake-on and hwps-off */
1095 hwps = 0;
1096 awake = 1;
1097
1098 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1099 if (hwps)
1100 macctl |= B43_MACCTL_HWPS;
1101 else
1102 macctl &= ~B43_MACCTL_HWPS;
1103 if (awake)
1104 macctl |= B43_MACCTL_AWAKE;
1105 else
1106 macctl &= ~B43_MACCTL_AWAKE;
1107 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1108 /* Commit write */
1109 b43_read32(dev, B43_MMIO_MACCTL);
1110 if (awake && dev->dev->id.revision >= 5) {
1111 /* Wait for the microcode to wake up. */
1112 for (i = 0; i < 100; i++) {
1113 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1114 B43_SHM_SH_UCODESTAT);
1115 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1116 break;
1117 udelay(10);
1118 }
1119 }
1120 }
1121
1122 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1123 {
1124 u32 tmslow;
1125 u32 macctl;
1126
1127 flags |= B43_TMSLOW_PHYCLKEN;
1128 flags |= B43_TMSLOW_PHYRESET;
1129 ssb_device_enable(dev->dev, flags);
1130 msleep(2); /* Wait for the PLL to turn on. */
1131
1132 /* Now take the PHY out of Reset again */
1133 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1134 tmslow |= SSB_TMSLOW_FGC;
1135 tmslow &= ~B43_TMSLOW_PHYRESET;
1136 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1137 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1138 msleep(1);
1139 tmslow &= ~SSB_TMSLOW_FGC;
1140 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1141 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
1142 msleep(1);
1143
1144 /* Turn Analog ON, but only if we already know the PHY-type.
1145 * This protects against very early setup where we don't know the
1146 * PHY-type, yet. wireless_core_reset will be called once again later,
1147 * when we know the PHY-type. */
1148 if (dev->phy.ops)
1149 dev->phy.ops->switch_analog(dev, 1);
1150
1151 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1152 macctl &= ~B43_MACCTL_GMODE;
1153 if (flags & B43_TMSLOW_GMODE)
1154 macctl |= B43_MACCTL_GMODE;
1155 macctl |= B43_MACCTL_IHR_ENABLED;
1156 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1157 }
1158
1159 static void handle_irq_transmit_status(struct b43_wldev *dev)
1160 {
1161 u32 v0, v1;
1162 u16 tmp;
1163 struct b43_txstatus stat;
1164
1165 while (1) {
1166 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1167 if (!(v0 & 0x00000001))
1168 break;
1169 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1170
1171 stat.cookie = (v0 >> 16);
1172 stat.seq = (v1 & 0x0000FFFF);
1173 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1174 tmp = (v0 & 0x0000FFFF);
1175 stat.frame_count = ((tmp & 0xF000) >> 12);
1176 stat.rts_count = ((tmp & 0x0F00) >> 8);
1177 stat.supp_reason = ((tmp & 0x001C) >> 2);
1178 stat.pm_indicated = !!(tmp & 0x0080);
1179 stat.intermediate = !!(tmp & 0x0040);
1180 stat.for_ampdu = !!(tmp & 0x0020);
1181 stat.acked = !!(tmp & 0x0002);
1182
1183 b43_handle_txstatus(dev, &stat);
1184 }
1185 }
1186
1187 static void drain_txstatus_queue(struct b43_wldev *dev)
1188 {
1189 u32 dummy;
1190
1191 if (dev->dev->id.revision < 5)
1192 return;
1193 /* Read all entries from the microcode TXstatus FIFO
1194 * and throw them away.
1195 */
1196 while (1) {
1197 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1198 if (!(dummy & 0x00000001))
1199 break;
1200 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1201 }
1202 }
1203
1204 static u32 b43_jssi_read(struct b43_wldev *dev)
1205 {
1206 u32 val = 0;
1207
1208 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1209 val <<= 16;
1210 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1211
1212 return val;
1213 }
1214
1215 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1216 {
1217 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1218 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1219 }
1220
1221 static void b43_generate_noise_sample(struct b43_wldev *dev)
1222 {
1223 b43_jssi_write(dev, 0x7F7F7F7F);
1224 b43_write32(dev, B43_MMIO_MACCMD,
1225 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1226 }
1227
1228 static void b43_calculate_link_quality(struct b43_wldev *dev)
1229 {
1230 /* Top half of Link Quality calculation. */
1231
1232 if (dev->phy.type != B43_PHYTYPE_G)
1233 return;
1234 if (dev->noisecalc.calculation_running)
1235 return;
1236 dev->noisecalc.calculation_running = 1;
1237 dev->noisecalc.nr_samples = 0;
1238
1239 b43_generate_noise_sample(dev);
1240 }
1241
1242 static void handle_irq_noise(struct b43_wldev *dev)
1243 {
1244 struct b43_phy_g *phy = dev->phy.g;
1245 u16 tmp;
1246 u8 noise[4];
1247 u8 i, j;
1248 s32 average;
1249
1250 /* Bottom half of Link Quality calculation. */
1251
1252 if (dev->phy.type != B43_PHYTYPE_G)
1253 return;
1254
1255 /* Possible race condition: It might be possible that the user
1256 * changed to a different channel in the meantime since we
1257 * started the calculation. We ignore that fact, since it's
1258 * not really that much of a problem. The background noise is
1259 * an estimation only anyway. Slightly wrong results will get damped
1260 * by the averaging of the 8 sample rounds. Additionally the
1261 * value is shortlived. So it will be replaced by the next noise
1262 * calculation round soon. */
1263
1264 B43_WARN_ON(!dev->noisecalc.calculation_running);
1265 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1266 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1267 noise[2] == 0x7F || noise[3] == 0x7F)
1268 goto generate_new;
1269
1270 /* Get the noise samples. */
1271 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1272 i = dev->noisecalc.nr_samples;
1273 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1274 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1275 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1276 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1277 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1278 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1279 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1280 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1281 dev->noisecalc.nr_samples++;
1282 if (dev->noisecalc.nr_samples == 8) {
1283 /* Calculate the Link Quality by the noise samples. */
1284 average = 0;
1285 for (i = 0; i < 8; i++) {
1286 for (j = 0; j < 4; j++)
1287 average += dev->noisecalc.samples[i][j];
1288 }
1289 average /= (8 * 4);
1290 average *= 125;
1291 average += 64;
1292 average /= 128;
1293 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1294 tmp = (tmp / 128) & 0x1F;
1295 if (tmp >= 8)
1296 average += 2;
1297 else
1298 average -= 25;
1299 if (tmp == 8)
1300 average -= 72;
1301 else
1302 average -= 48;
1303
1304 dev->stats.link_noise = average;
1305 dev->noisecalc.calculation_running = 0;
1306 return;
1307 }
1308 generate_new:
1309 b43_generate_noise_sample(dev);
1310 }
1311
1312 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1313 {
1314 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1315 ///TODO: PS TBTT
1316 } else {
1317 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1318 b43_power_saving_ctl_bits(dev, 0);
1319 }
1320 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1321 dev->dfq_valid = 1;
1322 }
1323
1324 static void handle_irq_atim_end(struct b43_wldev *dev)
1325 {
1326 if (dev->dfq_valid) {
1327 b43_write32(dev, B43_MMIO_MACCMD,
1328 b43_read32(dev, B43_MMIO_MACCMD)
1329 | B43_MACCMD_DFQ_VALID);
1330 dev->dfq_valid = 0;
1331 }
1332 }
1333
1334 static void handle_irq_pmq(struct b43_wldev *dev)
1335 {
1336 u32 tmp;
1337
1338 //TODO: AP mode.
1339
1340 while (1) {
1341 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1342 if (!(tmp & 0x00000008))
1343 break;
1344 }
1345 /* 16bit write is odd, but correct. */
1346 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1347 }
1348
1349 static void b43_write_template_common(struct b43_wldev *dev,
1350 const u8 *data, u16 size,
1351 u16 ram_offset,
1352 u16 shm_size_offset, u8 rate)
1353 {
1354 u32 i, tmp;
1355 struct b43_plcp_hdr4 plcp;
1356
1357 plcp.data = 0;
1358 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1359 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1360 ram_offset += sizeof(u32);
1361 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1362 * So leave the first two bytes of the next write blank.
1363 */
1364 tmp = (u32) (data[0]) << 16;
1365 tmp |= (u32) (data[1]) << 24;
1366 b43_ram_write(dev, ram_offset, tmp);
1367 ram_offset += sizeof(u32);
1368 for (i = 2; i < size; i += sizeof(u32)) {
1369 tmp = (u32) (data[i + 0]);
1370 if (i + 1 < size)
1371 tmp |= (u32) (data[i + 1]) << 8;
1372 if (i + 2 < size)
1373 tmp |= (u32) (data[i + 2]) << 16;
1374 if (i + 3 < size)
1375 tmp |= (u32) (data[i + 3]) << 24;
1376 b43_ram_write(dev, ram_offset + i - 2, tmp);
1377 }
1378 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1379 size + sizeof(struct b43_plcp_hdr6));
1380 }
1381
1382 /* Check if the use of the antenna that ieee80211 told us to
1383 * use is possible. This will fall back to DEFAULT.
1384 * "antenna_nr" is the antenna identifier we got from ieee80211. */
1385 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1386 u8 antenna_nr)
1387 {
1388 u8 antenna_mask;
1389
1390 if (antenna_nr == 0) {
1391 /* Zero means "use default antenna". That's always OK. */
1392 return 0;
1393 }
1394
1395 /* Get the mask of available antennas. */
1396 if (dev->phy.gmode)
1397 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1398 else
1399 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1400
1401 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1402 /* This antenna is not available. Fall back to default. */
1403 return 0;
1404 }
1405
1406 return antenna_nr;
1407 }
1408
1409 /* Convert a b43 antenna number value to the PHY TX control value. */
1410 static u16 b43_antenna_to_phyctl(int antenna)
1411 {
1412 switch (antenna) {
1413 case B43_ANTENNA0:
1414 return B43_TXH_PHY_ANT0;
1415 case B43_ANTENNA1:
1416 return B43_TXH_PHY_ANT1;
1417 case B43_ANTENNA2:
1418 return B43_TXH_PHY_ANT2;
1419 case B43_ANTENNA3:
1420 return B43_TXH_PHY_ANT3;
1421 case B43_ANTENNA_AUTO0:
1422 case B43_ANTENNA_AUTO1:
1423 return B43_TXH_PHY_ANT01AUTO;
1424 }
1425 B43_WARN_ON(1);
1426 return 0;
1427 }
1428
1429 static void b43_write_beacon_template(struct b43_wldev *dev,
1430 u16 ram_offset,
1431 u16 shm_size_offset)
1432 {
1433 unsigned int i, len, variable_len;
1434 const struct ieee80211_mgmt *bcn;
1435 const u8 *ie;
1436 bool tim_found = 0;
1437 unsigned int rate;
1438 u16 ctl;
1439 int antenna;
1440 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1441
1442 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1443 len = min((size_t) dev->wl->current_beacon->len,
1444 0x200 - sizeof(struct b43_plcp_hdr6));
1445 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1446
1447 b43_write_template_common(dev, (const u8 *)bcn,
1448 len, ram_offset, shm_size_offset, rate);
1449
1450 /* Write the PHY TX control parameters. */
1451 antenna = B43_ANTENNA_DEFAULT;
1452 antenna = b43_antenna_to_phyctl(antenna);
1453 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1454 /* We can't send beacons with short preamble. Would get PHY errors. */
1455 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1456 ctl &= ~B43_TXH_PHY_ANT;
1457 ctl &= ~B43_TXH_PHY_ENC;
1458 ctl |= antenna;
1459 if (b43_is_cck_rate(rate))
1460 ctl |= B43_TXH_PHY_ENC_CCK;
1461 else
1462 ctl |= B43_TXH_PHY_ENC_OFDM;
1463 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1464
1465 /* Find the position of the TIM and the DTIM_period value
1466 * and write them to SHM. */
1467 ie = bcn->u.beacon.variable;
1468 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1469 for (i = 0; i < variable_len - 2; ) {
1470 uint8_t ie_id, ie_len;
1471
1472 ie_id = ie[i];
1473 ie_len = ie[i + 1];
1474 if (ie_id == 5) {
1475 u16 tim_position;
1476 u16 dtim_period;
1477 /* This is the TIM Information Element */
1478
1479 /* Check whether the ie_len is in the beacon data range. */
1480 if (variable_len < ie_len + 2 + i)
1481 break;
1482 /* A valid TIM is at least 4 bytes long. */
1483 if (ie_len < 4)
1484 break;
1485 tim_found = 1;
1486
1487 tim_position = sizeof(struct b43_plcp_hdr6);
1488 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1489 tim_position += i;
1490
1491 dtim_period = ie[i + 3];
1492
1493 b43_shm_write16(dev, B43_SHM_SHARED,
1494 B43_SHM_SH_TIMBPOS, tim_position);
1495 b43_shm_write16(dev, B43_SHM_SHARED,
1496 B43_SHM_SH_DTIMPER, dtim_period);
1497 break;
1498 }
1499 i += ie_len + 2;
1500 }
1501 if (!tim_found) {
1502 /*
1503 * If ucode wants to modify TIM do it behind the beacon, this
1504 * will happen, for example, when doing mesh networking.
1505 */
1506 b43_shm_write16(dev, B43_SHM_SHARED,
1507 B43_SHM_SH_TIMBPOS,
1508 len + sizeof(struct b43_plcp_hdr6));
1509 b43_shm_write16(dev, B43_SHM_SHARED,
1510 B43_SHM_SH_DTIMPER, 0);
1511 }
1512 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1513 }
1514
1515 static void b43_upload_beacon0(struct b43_wldev *dev)
1516 {
1517 struct b43_wl *wl = dev->wl;
1518
1519 if (wl->beacon0_uploaded)
1520 return;
1521 b43_write_beacon_template(dev, 0x68, 0x18);
1522 wl->beacon0_uploaded = 1;
1523 }
1524
1525 static void b43_upload_beacon1(struct b43_wldev *dev)
1526 {
1527 struct b43_wl *wl = dev->wl;
1528
1529 if (wl->beacon1_uploaded)
1530 return;
1531 b43_write_beacon_template(dev, 0x468, 0x1A);
1532 wl->beacon1_uploaded = 1;
1533 }
1534
1535 static void handle_irq_beacon(struct b43_wldev *dev)
1536 {
1537 struct b43_wl *wl = dev->wl;
1538 u32 cmd, beacon0_valid, beacon1_valid;
1539
1540 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1541 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1542 return;
1543
1544 /* This is the bottom half of the asynchronous beacon update. */
1545
1546 /* Ignore interrupt in the future. */
1547 dev->irq_mask &= ~B43_IRQ_BEACON;
1548
1549 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1550 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1551 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1552
1553 /* Schedule interrupt manually, if busy. */
1554 if (beacon0_valid && beacon1_valid) {
1555 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1556 dev->irq_mask |= B43_IRQ_BEACON;
1557 return;
1558 }
1559
1560 if (unlikely(wl->beacon_templates_virgin)) {
1561 /* We never uploaded a beacon before.
1562 * Upload both templates now, but only mark one valid. */
1563 wl->beacon_templates_virgin = 0;
1564 b43_upload_beacon0(dev);
1565 b43_upload_beacon1(dev);
1566 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1567 cmd |= B43_MACCMD_BEACON0_VALID;
1568 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1569 } else {
1570 if (!beacon0_valid) {
1571 b43_upload_beacon0(dev);
1572 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1573 cmd |= B43_MACCMD_BEACON0_VALID;
1574 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1575 } else if (!beacon1_valid) {
1576 b43_upload_beacon1(dev);
1577 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1578 cmd |= B43_MACCMD_BEACON1_VALID;
1579 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1580 }
1581 }
1582 }
1583
1584 static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1585 {
1586 u32 old_irq_mask = dev->irq_mask;
1587
1588 /* update beacon right away or defer to irq */
1589 handle_irq_beacon(dev);
1590 if (old_irq_mask != dev->irq_mask) {
1591 /* The handler updated the IRQ mask. */
1592 B43_WARN_ON(!dev->irq_mask);
1593 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1594 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1595 } else {
1596 /* Device interrupts are currently disabled. That means
1597 * we just ran the hardirq handler and scheduled the
1598 * IRQ thread. The thread will write the IRQ mask when
1599 * it finished, so there's nothing to do here. Writing
1600 * the mask _here_ would incorrectly re-enable IRQs. */
1601 }
1602 }
1603 }
1604
1605 static void b43_beacon_update_trigger_work(struct work_struct *work)
1606 {
1607 struct b43_wl *wl = container_of(work, struct b43_wl,
1608 beacon_update_trigger);
1609 struct b43_wldev *dev;
1610
1611 mutex_lock(&wl->mutex);
1612 dev = wl->current_dev;
1613 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1614 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
1615 /* wl->mutex is enough. */
1616 b43_do_beacon_update_trigger_work(dev);
1617 mmiowb();
1618 } else {
1619 spin_lock_irq(&wl->hardirq_lock);
1620 b43_do_beacon_update_trigger_work(dev);
1621 mmiowb();
1622 spin_unlock_irq(&wl->hardirq_lock);
1623 }
1624 }
1625 mutex_unlock(&wl->mutex);
1626 }
1627
1628 /* Asynchronously update the packet templates in template RAM.
1629 * Locking: Requires wl->mutex to be locked. */
1630 static void b43_update_templates(struct b43_wl *wl)
1631 {
1632 struct sk_buff *beacon;
1633
1634 /* This is the top half of the ansynchronous beacon update.
1635 * The bottom half is the beacon IRQ.
1636 * Beacon update must be asynchronous to avoid sending an
1637 * invalid beacon. This can happen for example, if the firmware
1638 * transmits a beacon while we are updating it. */
1639
1640 /* We could modify the existing beacon and set the aid bit in
1641 * the TIM field, but that would probably require resizing and
1642 * moving of data within the beacon template.
1643 * Simply request a new beacon and let mac80211 do the hard work. */
1644 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1645 if (unlikely(!beacon))
1646 return;
1647
1648 if (wl->current_beacon)
1649 dev_kfree_skb_any(wl->current_beacon);
1650 wl->current_beacon = beacon;
1651 wl->beacon0_uploaded = 0;
1652 wl->beacon1_uploaded = 0;
1653 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1654 }
1655
1656 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1657 {
1658 b43_time_lock(dev);
1659 if (dev->dev->id.revision >= 3) {
1660 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1661 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1662 } else {
1663 b43_write16(dev, 0x606, (beacon_int >> 6));
1664 b43_write16(dev, 0x610, beacon_int);
1665 }
1666 b43_time_unlock(dev);
1667 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1668 }
1669
1670 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1671 {
1672 u16 reason;
1673
1674 /* Read the register that contains the reason code for the panic. */
1675 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1676 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1677
1678 switch (reason) {
1679 default:
1680 b43dbg(dev->wl, "The panic reason is unknown.\n");
1681 /* fallthrough */
1682 case B43_FWPANIC_DIE:
1683 /* Do not restart the controller or firmware.
1684 * The device is nonfunctional from now on.
1685 * Restarting would result in this panic to trigger again,
1686 * so we avoid that recursion. */
1687 break;
1688 case B43_FWPANIC_RESTART:
1689 b43_controller_restart(dev, "Microcode panic");
1690 break;
1691 }
1692 }
1693
1694 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1695 {
1696 unsigned int i, cnt;
1697 u16 reason, marker_id, marker_line;
1698 __le16 *buf;
1699
1700 /* The proprietary firmware doesn't have this IRQ. */
1701 if (!dev->fw.opensource)
1702 return;
1703
1704 /* Read the register that contains the reason code for this IRQ. */
1705 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1706
1707 switch (reason) {
1708 case B43_DEBUGIRQ_PANIC:
1709 b43_handle_firmware_panic(dev);
1710 break;
1711 case B43_DEBUGIRQ_DUMP_SHM:
1712 if (!B43_DEBUG)
1713 break; /* Only with driver debugging enabled. */
1714 buf = kmalloc(4096, GFP_ATOMIC);
1715 if (!buf) {
1716 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1717 goto out;
1718 }
1719 for (i = 0; i < 4096; i += 2) {
1720 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1721 buf[i / 2] = cpu_to_le16(tmp);
1722 }
1723 b43info(dev->wl, "Shared memory dump:\n");
1724 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1725 16, 2, buf, 4096, 1);
1726 kfree(buf);
1727 break;
1728 case B43_DEBUGIRQ_DUMP_REGS:
1729 if (!B43_DEBUG)
1730 break; /* Only with driver debugging enabled. */
1731 b43info(dev->wl, "Microcode register dump:\n");
1732 for (i = 0, cnt = 0; i < 64; i++) {
1733 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1734 if (cnt == 0)
1735 printk(KERN_INFO);
1736 printk("r%02u: 0x%04X ", i, tmp);
1737 cnt++;
1738 if (cnt == 6) {
1739 printk("\n");
1740 cnt = 0;
1741 }
1742 }
1743 printk("\n");
1744 break;
1745 case B43_DEBUGIRQ_MARKER:
1746 if (!B43_DEBUG)
1747 break; /* Only with driver debugging enabled. */
1748 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1749 B43_MARKER_ID_REG);
1750 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1751 B43_MARKER_LINE_REG);
1752 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1753 "at line number %u\n",
1754 marker_id, marker_line);
1755 break;
1756 default:
1757 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1758 reason);
1759 }
1760 out:
1761 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1762 b43_shm_write16(dev, B43_SHM_SCRATCH,
1763 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1764 }
1765
1766 static void b43_do_interrupt_thread(struct b43_wldev *dev)
1767 {
1768 u32 reason;
1769 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1770 u32 merged_dma_reason = 0;
1771 int i;
1772
1773 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1774 return;
1775
1776 reason = dev->irq_reason;
1777 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1778 dma_reason[i] = dev->dma_reason[i];
1779 merged_dma_reason |= dma_reason[i];
1780 }
1781
1782 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1783 b43err(dev->wl, "MAC transmission error\n");
1784
1785 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1786 b43err(dev->wl, "PHY transmission error\n");
1787 rmb();
1788 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1789 atomic_set(&dev->phy.txerr_cnt,
1790 B43_PHY_TX_BADNESS_LIMIT);
1791 b43err(dev->wl, "Too many PHY TX errors, "
1792 "restarting the controller\n");
1793 b43_controller_restart(dev, "PHY TX errors");
1794 }
1795 }
1796
1797 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1798 B43_DMAIRQ_NONFATALMASK))) {
1799 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1800 b43err(dev->wl, "Fatal DMA error: "
1801 "0x%08X, 0x%08X, 0x%08X, "
1802 "0x%08X, 0x%08X, 0x%08X\n",
1803 dma_reason[0], dma_reason[1],
1804 dma_reason[2], dma_reason[3],
1805 dma_reason[4], dma_reason[5]);
1806 b43err(dev->wl, "This device does not support DMA "
1807 "on your system. Please use PIO instead.\n");
1808 /* Fall back to PIO transfers if we get fatal DMA errors! */
1809 dev->use_pio = 1;
1810 b43_controller_restart(dev, "DMA error");
1811 return;
1812 }
1813 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1814 b43err(dev->wl, "DMA error: "
1815 "0x%08X, 0x%08X, 0x%08X, "
1816 "0x%08X, 0x%08X, 0x%08X\n",
1817 dma_reason[0], dma_reason[1],
1818 dma_reason[2], dma_reason[3],
1819 dma_reason[4], dma_reason[5]);
1820 }
1821 }
1822
1823 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1824 handle_irq_ucode_debug(dev);
1825 if (reason & B43_IRQ_TBTT_INDI)
1826 handle_irq_tbtt_indication(dev);
1827 if (reason & B43_IRQ_ATIM_END)
1828 handle_irq_atim_end(dev);
1829 if (reason & B43_IRQ_BEACON)
1830 handle_irq_beacon(dev);
1831 if (reason & B43_IRQ_PMQ)
1832 handle_irq_pmq(dev);
1833 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1834 ;/* TODO */
1835 if (reason & B43_IRQ_NOISESAMPLE_OK)
1836 handle_irq_noise(dev);
1837
1838 /* Check the DMA reason registers for received data. */
1839 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1840 if (b43_using_pio_transfers(dev))
1841 b43_pio_rx(dev->pio.rx_queue);
1842 else
1843 b43_dma_rx(dev->dma.rx_ring);
1844 }
1845 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1846 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1847 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1848 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1849 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1850
1851 if (reason & B43_IRQ_TX_OK)
1852 handle_irq_transmit_status(dev);
1853
1854 /* Re-enable interrupts on the device by restoring the current interrupt mask. */
1855 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1856
1857 #if B43_DEBUG
1858 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
1859 dev->irq_count++;
1860 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
1861 if (reason & (1 << i))
1862 dev->irq_bit_count[i]++;
1863 }
1864 }
1865 #endif
1866 }
1867
1868 /* Interrupt thread handler. Handles device interrupts in thread context. */
1869 static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
1870 {
1871 struct b43_wldev *dev = dev_id;
1872
1873 mutex_lock(&dev->wl->mutex);
1874 b43_do_interrupt_thread(dev);
1875 mmiowb();
1876 mutex_unlock(&dev->wl->mutex);
1877
1878 return IRQ_HANDLED;
1879 }
1880
1881 static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
1882 {
1883 u32 reason;
1884
1885 /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
1886 * On SDIO, this runs under wl->mutex. */
1887
1888 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1889 if (reason == 0xffffffff) /* shared IRQ */
1890 return IRQ_NONE;
1891 reason &= dev->irq_mask;
1892 if (!reason)
1893 return IRQ_HANDLED;
1894
1895 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1896 & 0x0001DC00;
1897 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1898 & 0x0000DC00;
1899 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1900 & 0x0000DC00;
1901 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1902 & 0x0001DC00;
1903 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1904 & 0x0000DC00;
1905 /* Unused ring
1906 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1907 & 0x0000DC00;
1908 */
1909
1910 /* ACK the interrupt. */
1911 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1912 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1913 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1914 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1915 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1916 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1917 /* Unused ring
1918 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1919 */
1920
1921 /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
1922 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
1923 /* Save the reason bitmasks for the IRQ thread handler. */
1924 dev->irq_reason = reason;
1925
1926 return IRQ_WAKE_THREAD;
1927 }
1928
1929 /* Interrupt handler top-half. This runs with interrupts disabled. */
1930 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1931 {
1932 struct b43_wldev *dev = dev_id;
1933 irqreturn_t ret;
1934
1935 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
1936 return IRQ_NONE;
1937
1938 spin_lock(&dev->wl->hardirq_lock);
1939 ret = b43_do_interrupt(dev);
1940 mmiowb();
1941 spin_unlock(&dev->wl->hardirq_lock);
1942
1943 return ret;
1944 }
1945
1946 /* SDIO interrupt handler. This runs in process context. */
1947 static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
1948 {
1949 struct b43_wl *wl = dev->wl;
1950 irqreturn_t ret;
1951
1952 mutex_lock(&wl->mutex);
1953
1954 ret = b43_do_interrupt(dev);
1955 if (ret == IRQ_WAKE_THREAD)
1956 b43_do_interrupt_thread(dev);
1957
1958 mutex_unlock(&wl->mutex);
1959 }
1960
1961 void b43_do_release_fw(struct b43_firmware_file *fw)
1962 {
1963 release_firmware(fw->data);
1964 fw->data = NULL;
1965 fw->filename = NULL;
1966 }
1967
1968 static void b43_release_firmware(struct b43_wldev *dev)
1969 {
1970 b43_do_release_fw(&dev->fw.ucode);
1971 b43_do_release_fw(&dev->fw.pcm);
1972 b43_do_release_fw(&dev->fw.initvals);
1973 b43_do_release_fw(&dev->fw.initvals_band);
1974 }
1975
1976 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1977 {
1978 const char text[] =
1979 "You must go to " \
1980 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
1981 "and download the correct firmware for this driver version. " \
1982 "Please carefully read all instructions on this website.\n";
1983
1984 if (error)
1985 b43err(wl, text);
1986 else
1987 b43warn(wl, text);
1988 }
1989
1990 int b43_do_request_fw(struct b43_request_fw_context *ctx,
1991 const char *name,
1992 struct b43_firmware_file *fw)
1993 {
1994 const struct firmware *blob;
1995 struct b43_fw_header *hdr;
1996 u32 size;
1997 int err;
1998
1999 if (!name) {
2000 /* Don't fetch anything. Free possibly cached firmware. */
2001 /* FIXME: We should probably keep it anyway, to save some headache
2002 * on suspend/resume with multiband devices. */
2003 b43_do_release_fw(fw);
2004 return 0;
2005 }
2006 if (fw->filename) {
2007 if ((fw->type == ctx->req_type) &&
2008 (strcmp(fw->filename, name) == 0))
2009 return 0; /* Already have this fw. */
2010 /* Free the cached firmware first. */
2011 /* FIXME: We should probably do this later after we successfully
2012 * got the new fw. This could reduce headache with multiband devices.
2013 * We could also redesign this to cache the firmware for all possible
2014 * bands all the time. */
2015 b43_do_release_fw(fw);
2016 }
2017
2018 switch (ctx->req_type) {
2019 case B43_FWTYPE_PROPRIETARY:
2020 snprintf(ctx->fwname, sizeof(ctx->fwname),
2021 "b43%s/%s.fw",
2022 modparam_fwpostfix, name);
2023 break;
2024 case B43_FWTYPE_OPENSOURCE:
2025 snprintf(ctx->fwname, sizeof(ctx->fwname),
2026 "b43-open%s/%s.fw",
2027 modparam_fwpostfix, name);
2028 break;
2029 default:
2030 B43_WARN_ON(1);
2031 return -ENOSYS;
2032 }
2033 err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
2034 if (err == -ENOENT) {
2035 snprintf(ctx->errors[ctx->req_type],
2036 sizeof(ctx->errors[ctx->req_type]),
2037 "Firmware file \"%s\" not found\n", ctx->fwname);
2038 return err;
2039 } else if (err) {
2040 snprintf(ctx->errors[ctx->req_type],
2041 sizeof(ctx->errors[ctx->req_type]),
2042 "Firmware file \"%s\" request failed (err=%d)\n",
2043 ctx->fwname, err);
2044 return err;
2045 }
2046 if (blob->size < sizeof(struct b43_fw_header))
2047 goto err_format;
2048 hdr = (struct b43_fw_header *)(blob->data);
2049 switch (hdr->type) {
2050 case B43_FW_TYPE_UCODE:
2051 case B43_FW_TYPE_PCM:
2052 size = be32_to_cpu(hdr->size);
2053 if (size != blob->size - sizeof(struct b43_fw_header))
2054 goto err_format;
2055 /* fallthrough */
2056 case B43_FW_TYPE_IV:
2057 if (hdr->ver != 1)
2058 goto err_format;
2059 break;
2060 default:
2061 goto err_format;
2062 }
2063
2064 fw->data = blob;
2065 fw->filename = name;
2066 fw->type = ctx->req_type;
2067
2068 return 0;
2069
2070 err_format:
2071 snprintf(ctx->errors[ctx->req_type],
2072 sizeof(ctx->errors[ctx->req_type]),
2073 "Firmware file \"%s\" format error.\n", ctx->fwname);
2074 release_firmware(blob);
2075
2076 return -EPROTO;
2077 }
2078
2079 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2080 {
2081 struct b43_wldev *dev = ctx->dev;
2082 struct b43_firmware *fw = &ctx->dev->fw;
2083 const u8 rev = ctx->dev->dev->id.revision;
2084 const char *filename;
2085 u32 tmshigh;
2086 int err;
2087
2088 /* Get microcode */
2089 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2090 if ((rev >= 5) && (rev <= 10))
2091 filename = "ucode5";
2092 else if ((rev >= 11) && (rev <= 12))
2093 filename = "ucode11";
2094 else if (rev == 13)
2095 filename = "ucode13";
2096 else if (rev == 14)
2097 filename = "ucode14";
2098 else if (rev >= 15)
2099 filename = "ucode15";
2100 else
2101 goto err_no_ucode;
2102 err = b43_do_request_fw(ctx, filename, &fw->ucode);
2103 if (err)
2104 goto err_load;
2105
2106 /* Get PCM code */
2107 if ((rev >= 5) && (rev <= 10))
2108 filename = "pcm5";
2109 else if (rev >= 11)
2110 filename = NULL;
2111 else
2112 goto err_no_pcm;
2113 fw->pcm_request_failed = 0;
2114 err = b43_do_request_fw(ctx, filename, &fw->pcm);
2115 if (err == -ENOENT) {
2116 /* We did not find a PCM file? Not fatal, but
2117 * core rev <= 10 must do without hwcrypto then. */
2118 fw->pcm_request_failed = 1;
2119 } else if (err)
2120 goto err_load;
2121
2122 /* Get initvals */
2123 switch (dev->phy.type) {
2124 case B43_PHYTYPE_A:
2125 if ((rev >= 5) && (rev <= 10)) {
2126 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2127 filename = "a0g1initvals5";
2128 else
2129 filename = "a0g0initvals5";
2130 } else
2131 goto err_no_initvals;
2132 break;
2133 case B43_PHYTYPE_G:
2134 if ((rev >= 5) && (rev <= 10))
2135 filename = "b0g0initvals5";
2136 else if (rev >= 13)
2137 filename = "b0g0initvals13";
2138 else
2139 goto err_no_initvals;
2140 break;
2141 case B43_PHYTYPE_N:
2142 if ((rev >= 11) && (rev <= 12))
2143 filename = "n0initvals11";
2144 else
2145 goto err_no_initvals;
2146 break;
2147 case B43_PHYTYPE_LP:
2148 if (rev == 13)
2149 filename = "lp0initvals13";
2150 else if (rev == 14)
2151 filename = "lp0initvals14";
2152 else if (rev >= 15)
2153 filename = "lp0initvals15";
2154 else
2155 goto err_no_initvals;
2156 break;
2157 default:
2158 goto err_no_initvals;
2159 }
2160 err = b43_do_request_fw(ctx, filename, &fw->initvals);
2161 if (err)
2162 goto err_load;
2163
2164 /* Get bandswitch initvals */
2165 switch (dev->phy.type) {
2166 case B43_PHYTYPE_A:
2167 if ((rev >= 5) && (rev <= 10)) {
2168 if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2169 filename = "a0g1bsinitvals5";
2170 else
2171 filename = "a0g0bsinitvals5";
2172 } else if (rev >= 11)
2173 filename = NULL;
2174 else
2175 goto err_no_initvals;
2176 break;
2177 case B43_PHYTYPE_G:
2178 if ((rev >= 5) && (rev <= 10))
2179 filename = "b0g0bsinitvals5";
2180 else if (rev >= 11)
2181 filename = NULL;
2182 else
2183 goto err_no_initvals;
2184 break;
2185 case B43_PHYTYPE_N:
2186 if ((rev >= 11) && (rev <= 12))
2187 filename = "n0bsinitvals11";
2188 else
2189 goto err_no_initvals;
2190 break;
2191 case B43_PHYTYPE_LP:
2192 if (rev == 13)
2193 filename = "lp0bsinitvals13";
2194 else if (rev == 14)
2195 filename = "lp0bsinitvals14";
2196 else if (rev >= 15)
2197 filename = "lp0bsinitvals15";
2198 else
2199 goto err_no_initvals;
2200 break;
2201 default:
2202 goto err_no_initvals;
2203 }
2204 err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2205 if (err)
2206 goto err_load;
2207
2208 return 0;
2209
2210 err_no_ucode:
2211 err = ctx->fatal_failure = -EOPNOTSUPP;
2212 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2213 "is required for your device (wl-core rev %u)\n", rev);
2214 goto error;
2215
2216 err_no_pcm:
2217 err = ctx->fatal_failure = -EOPNOTSUPP;
2218 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2219 "is required for your device (wl-core rev %u)\n", rev);
2220 goto error;
2221
2222 err_no_initvals:
2223 err = ctx->fatal_failure = -EOPNOTSUPP;
2224 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2225 "is required for your device (wl-core rev %u)\n", rev);
2226 goto error;
2227
2228 err_load:
2229 /* We failed to load this firmware image. The error message
2230 * already is in ctx->errors. Return and let our caller decide
2231 * what to do. */
2232 goto error;
2233
2234 error:
2235 b43_release_firmware(dev);
2236 return err;
2237 }
2238
2239 static int b43_request_firmware(struct b43_wldev *dev)
2240 {
2241 struct b43_request_fw_context *ctx;
2242 unsigned int i;
2243 int err;
2244 const char *errmsg;
2245
2246 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2247 if (!ctx)
2248 return -ENOMEM;
2249 ctx->dev = dev;
2250
2251 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2252 err = b43_try_request_fw(ctx);
2253 if (!err)
2254 goto out; /* Successfully loaded it. */
2255 err = ctx->fatal_failure;
2256 if (err)
2257 goto out;
2258
2259 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2260 err = b43_try_request_fw(ctx);
2261 if (!err)
2262 goto out; /* Successfully loaded it. */
2263 err = ctx->fatal_failure;
2264 if (err)
2265 goto out;
2266
2267 /* Could not find a usable firmware. Print the errors. */
2268 for (i = 0; i < B43_NR_FWTYPES; i++) {
2269 errmsg = ctx->errors[i];
2270 if (strlen(errmsg))
2271 b43err(dev->wl, errmsg);
2272 }
2273 b43_print_fw_helptext(dev->wl, 1);
2274 err = -ENOENT;
2275
2276 out:
2277 kfree(ctx);
2278 return err;
2279 }
2280
2281 static int b43_upload_microcode(struct b43_wldev *dev)
2282 {
2283 const size_t hdr_len = sizeof(struct b43_fw_header);
2284 const __be32 *data;
2285 unsigned int i, len;
2286 u16 fwrev, fwpatch, fwdate, fwtime;
2287 u32 tmp, macctl;
2288 int err = 0;
2289
2290 /* Jump the microcode PSM to offset 0 */
2291 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2292 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2293 macctl |= B43_MACCTL_PSM_JMP0;
2294 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2295 /* Zero out all microcode PSM registers and shared memory. */
2296 for (i = 0; i < 64; i++)
2297 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2298 for (i = 0; i < 4096; i += 2)
2299 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2300
2301 /* Upload Microcode. */
2302 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2303 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2304 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2305 for (i = 0; i < len; i++) {
2306 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2307 udelay(10);
2308 }
2309
2310 if (dev->fw.pcm.data) {
2311 /* Upload PCM data. */
2312 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2313 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2314 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2315 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2316 /* No need for autoinc bit in SHM_HW */
2317 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2318 for (i = 0; i < len; i++) {
2319 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2320 udelay(10);
2321 }
2322 }
2323
2324 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2325
2326 /* Start the microcode PSM */
2327 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2328 macctl &= ~B43_MACCTL_PSM_JMP0;
2329 macctl |= B43_MACCTL_PSM_RUN;
2330 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2331
2332 /* Wait for the microcode to load and respond */
2333 i = 0;
2334 while (1) {
2335 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2336 if (tmp == B43_IRQ_MAC_SUSPENDED)
2337 break;
2338 i++;
2339 if (i >= 20) {
2340 b43err(dev->wl, "Microcode not responding\n");
2341 b43_print_fw_helptext(dev->wl, 1);
2342 err = -ENODEV;
2343 goto error;
2344 }
2345 msleep(50);
2346 }
2347 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2348
2349 /* Get and check the revisions. */
2350 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2351 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2352 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2353 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2354
2355 if (fwrev <= 0x128) {
2356 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2357 "binary drivers older than version 4.x is unsupported. "
2358 "You must upgrade your firmware files.\n");
2359 b43_print_fw_helptext(dev->wl, 1);
2360 err = -EOPNOTSUPP;
2361 goto error;
2362 }
2363 dev->fw.rev = fwrev;
2364 dev->fw.patch = fwpatch;
2365 dev->fw.opensource = (fwdate == 0xFFFF);
2366
2367 /* Default to use-all-queues. */
2368 dev->wl->hw->queues = dev->wl->mac80211_initially_registered_queues;
2369 dev->qos_enabled = !!modparam_qos;
2370 /* Default to firmware/hardware crypto acceleration. */
2371 dev->hwcrypto_enabled = 1;
2372
2373 if (dev->fw.opensource) {
2374 u16 fwcapa;
2375
2376 /* Patchlevel info is encoded in the "time" field. */
2377 dev->fw.patch = fwtime;
2378 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2379 dev->fw.rev, dev->fw.patch);
2380
2381 fwcapa = b43_fwcapa_read(dev);
2382 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2383 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2384 /* Disable hardware crypto and fall back to software crypto. */
2385 dev->hwcrypto_enabled = 0;
2386 }
2387 if (!(fwcapa & B43_FWCAPA_QOS)) {
2388 b43info(dev->wl, "QoS not supported by firmware\n");
2389 /* Disable QoS. Tweak hw->queues to 1. It will be restored before
2390 * ieee80211_unregister to make sure the networking core can
2391 * properly free possible resources. */
2392 dev->wl->hw->queues = 1;
2393 dev->qos_enabled = 0;
2394 }
2395 } else {
2396 b43info(dev->wl, "Loading firmware version %u.%u "
2397 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2398 fwrev, fwpatch,
2399 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2400 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2401 if (dev->fw.pcm_request_failed) {
2402 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2403 "Hardware accelerated cryptography is disabled.\n");
2404 b43_print_fw_helptext(dev->wl, 0);
2405 }
2406 }
2407
2408 if (b43_is_old_txhdr_format(dev)) {
2409 /* We're over the deadline, but we keep support for old fw
2410 * until it turns out to be in major conflict with something new. */
2411 b43warn(dev->wl, "You are using an old firmware image. "
2412 "Support for old firmware will be removed soon "
2413 "(official deadline was July 2008).\n");
2414 b43_print_fw_helptext(dev->wl, 0);
2415 }
2416
2417 return 0;
2418
2419 error:
2420 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2421 macctl &= ~B43_MACCTL_PSM_RUN;
2422 macctl |= B43_MACCTL_PSM_JMP0;
2423 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2424
2425 return err;
2426 }
2427
2428 static int b43_write_initvals(struct b43_wldev *dev,
2429 const struct b43_iv *ivals,
2430 size_t count,
2431 size_t array_size)
2432 {
2433 const struct b43_iv *iv;
2434 u16 offset;
2435 size_t i;
2436 bool bit32;
2437
2438 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2439 iv = ivals;
2440 for (i = 0; i < count; i++) {
2441 if (array_size < sizeof(iv->offset_size))
2442 goto err_format;
2443 array_size -= sizeof(iv->offset_size);
2444 offset = be16_to_cpu(iv->offset_size);
2445 bit32 = !!(offset & B43_IV_32BIT);
2446 offset &= B43_IV_OFFSET_MASK;
2447 if (offset >= 0x1000)
2448 goto err_format;
2449 if (bit32) {
2450 u32 value;
2451
2452 if (array_size < sizeof(iv->data.d32))
2453 goto err_format;
2454 array_size -= sizeof(iv->data.d32);
2455
2456 value = get_unaligned_be32(&iv->data.d32);
2457 b43_write32(dev, offset, value);
2458
2459 iv = (const struct b43_iv *)((const uint8_t *)iv +
2460 sizeof(__be16) +
2461 sizeof(__be32));
2462 } else {
2463 u16 value;
2464
2465 if (array_size < sizeof(iv->data.d16))
2466 goto err_format;
2467 array_size -= sizeof(iv->data.d16);
2468
2469 value = be16_to_cpu(iv->data.d16);
2470 b43_write16(dev, offset, value);
2471
2472 iv = (const struct b43_iv *)((const uint8_t *)iv +
2473 sizeof(__be16) +
2474 sizeof(__be16));
2475 }
2476 }
2477 if (array_size)
2478 goto err_format;
2479
2480 return 0;
2481
2482 err_format:
2483 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2484 b43_print_fw_helptext(dev->wl, 1);
2485
2486 return -EPROTO;
2487 }
2488
2489 static int b43_upload_initvals(struct b43_wldev *dev)
2490 {
2491 const size_t hdr_len = sizeof(struct b43_fw_header);
2492 const struct b43_fw_header *hdr;
2493 struct b43_firmware *fw = &dev->fw;
2494 const struct b43_iv *ivals;
2495 size_t count;
2496 int err;
2497
2498 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2499 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2500 count = be32_to_cpu(hdr->size);
2501 err = b43_write_initvals(dev, ivals, count,
2502 fw->initvals.data->size - hdr_len);
2503 if (err)
2504 goto out;
2505 if (fw->initvals_band.data) {
2506 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2507 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2508 count = be32_to_cpu(hdr->size);
2509 err = b43_write_initvals(dev, ivals, count,
2510 fw->initvals_band.data->size - hdr_len);
2511 if (err)
2512 goto out;
2513 }
2514 out:
2515
2516 return err;
2517 }
2518
2519 /* Initialize the GPIOs
2520 * http://bcm-specs.sipsolutions.net/GPIO
2521 */
2522 static int b43_gpio_init(struct b43_wldev *dev)
2523 {
2524 struct ssb_bus *bus = dev->dev->bus;
2525 struct ssb_device *gpiodev, *pcidev = NULL;
2526 u32 mask, set;
2527
2528 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2529 & ~B43_MACCTL_GPOUTSMSK);
2530
2531 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2532 | 0x000F);
2533
2534 mask = 0x0000001F;
2535 set = 0x0000000F;
2536 if (dev->dev->bus->chip_id == 0x4301) {
2537 mask |= 0x0060;
2538 set |= 0x0060;
2539 }
2540 if (0 /* FIXME: conditional unknown */ ) {
2541 b43_write16(dev, B43_MMIO_GPIO_MASK,
2542 b43_read16(dev, B43_MMIO_GPIO_MASK)
2543 | 0x0100);
2544 mask |= 0x0180;
2545 set |= 0x0180;
2546 }
2547 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2548 b43_write16(dev, B43_MMIO_GPIO_MASK,
2549 b43_read16(dev, B43_MMIO_GPIO_MASK)
2550 | 0x0200);
2551 mask |= 0x0200;
2552 set |= 0x0200;
2553 }
2554 if (dev->dev->id.revision >= 2)
2555 mask |= 0x0010; /* FIXME: This is redundant. */
2556
2557 #ifdef CONFIG_SSB_DRIVER_PCICORE
2558 pcidev = bus->pcicore.dev;
2559 #endif
2560 gpiodev = bus->chipco.dev ? : pcidev;
2561 if (!gpiodev)
2562 return 0;
2563 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2564 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2565 & mask) | set);
2566
2567 return 0;
2568 }
2569
2570 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2571 static void b43_gpio_cleanup(struct b43_wldev *dev)
2572 {
2573 struct ssb_bus *bus = dev->dev->bus;
2574 struct ssb_device *gpiodev, *pcidev = NULL;
2575
2576 #ifdef CONFIG_SSB_DRIVER_PCICORE
2577 pcidev = bus->pcicore.dev;
2578 #endif
2579 gpiodev = bus->chipco.dev ? : pcidev;
2580 if (!gpiodev)
2581 return;
2582 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2583 }
2584
2585 /* http://bcm-specs.sipsolutions.net/EnableMac */
2586 void b43_mac_enable(struct b43_wldev *dev)
2587 {
2588 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2589 u16 fwstate;
2590
2591 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2592 B43_SHM_SH_UCODESTAT);
2593 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2594 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2595 b43err(dev->wl, "b43_mac_enable(): The firmware "
2596 "should be suspended, but current state is %u\n",
2597 fwstate);
2598 }
2599 }
2600
2601 dev->mac_suspended--;
2602 B43_WARN_ON(dev->mac_suspended < 0);
2603 if (dev->mac_suspended == 0) {
2604 b43_write32(dev, B43_MMIO_MACCTL,
2605 b43_read32(dev, B43_MMIO_MACCTL)
2606 | B43_MACCTL_ENABLED);
2607 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2608 B43_IRQ_MAC_SUSPENDED);
2609 /* Commit writes */
2610 b43_read32(dev, B43_MMIO_MACCTL);
2611 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2612 b43_power_saving_ctl_bits(dev, 0);
2613 }
2614 }
2615
2616 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2617 void b43_mac_suspend(struct b43_wldev *dev)
2618 {
2619 int i;
2620 u32 tmp;
2621
2622 might_sleep();
2623 B43_WARN_ON(dev->mac_suspended < 0);
2624
2625 if (dev->mac_suspended == 0) {
2626 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2627 b43_write32(dev, B43_MMIO_MACCTL,
2628 b43_read32(dev, B43_MMIO_MACCTL)
2629 & ~B43_MACCTL_ENABLED);
2630 /* force pci to flush the write */
2631 b43_read32(dev, B43_MMIO_MACCTL);
2632 for (i = 35; i; i--) {
2633 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2634 if (tmp & B43_IRQ_MAC_SUSPENDED)
2635 goto out;
2636 udelay(10);
2637 }
2638 /* Hm, it seems this will take some time. Use msleep(). */
2639 for (i = 40; i; i--) {
2640 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2641 if (tmp & B43_IRQ_MAC_SUSPENDED)
2642 goto out;
2643 msleep(1);
2644 }
2645 b43err(dev->wl, "MAC suspend failed\n");
2646 }
2647 out:
2648 dev->mac_suspended++;
2649 }
2650
2651 static void b43_adjust_opmode(struct b43_wldev *dev)
2652 {
2653 struct b43_wl *wl = dev->wl;
2654 u32 ctl;
2655 u16 cfp_pretbtt;
2656
2657 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2658 /* Reset status to STA infrastructure mode. */
2659 ctl &= ~B43_MACCTL_AP;
2660 ctl &= ~B43_MACCTL_KEEP_CTL;
2661 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2662 ctl &= ~B43_MACCTL_KEEP_BAD;
2663 ctl &= ~B43_MACCTL_PROMISC;
2664 ctl &= ~B43_MACCTL_BEACPROMISC;
2665 ctl |= B43_MACCTL_INFRA;
2666
2667 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2668 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2669 ctl |= B43_MACCTL_AP;
2670 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2671 ctl &= ~B43_MACCTL_INFRA;
2672
2673 if (wl->filter_flags & FIF_CONTROL)
2674 ctl |= B43_MACCTL_KEEP_CTL;
2675 if (wl->filter_flags & FIF_FCSFAIL)
2676 ctl |= B43_MACCTL_KEEP_BAD;
2677 if (wl->filter_flags & FIF_PLCPFAIL)
2678 ctl |= B43_MACCTL_KEEP_BADPLCP;
2679 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2680 ctl |= B43_MACCTL_PROMISC;
2681 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2682 ctl |= B43_MACCTL_BEACPROMISC;
2683
2684 /* Workaround: On old hardware the HW-MAC-address-filter
2685 * doesn't work properly, so always run promisc in filter
2686 * it in software. */
2687 if (dev->dev->id.revision <= 4)
2688 ctl |= B43_MACCTL_PROMISC;
2689
2690 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2691
2692 cfp_pretbtt = 2;
2693 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2694 if (dev->dev->bus->chip_id == 0x4306 &&
2695 dev->dev->bus->chip_rev == 3)
2696 cfp_pretbtt = 100;
2697 else
2698 cfp_pretbtt = 50;
2699 }
2700 b43_write16(dev, 0x612, cfp_pretbtt);
2701
2702 /* FIXME: We don't currently implement the PMQ mechanism,
2703 * so always disable it. If we want to implement PMQ,
2704 * we need to enable it here (clear DISCPMQ) in AP mode.
2705 */
2706 if (0 /* ctl & B43_MACCTL_AP */) {
2707 b43_write32(dev, B43_MMIO_MACCTL,
2708 b43_read32(dev, B43_MMIO_MACCTL)
2709 & ~B43_MACCTL_DISCPMQ);
2710 } else {
2711 b43_write32(dev, B43_MMIO_MACCTL,
2712 b43_read32(dev, B43_MMIO_MACCTL)
2713 | B43_MACCTL_DISCPMQ);
2714 }
2715 }
2716
2717 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2718 {
2719 u16 offset;
2720
2721 if (is_ofdm) {
2722 offset = 0x480;
2723 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2724 } else {
2725 offset = 0x4C0;
2726 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2727 }
2728 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2729 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2730 }
2731
2732 static void b43_rate_memory_init(struct b43_wldev *dev)
2733 {
2734 switch (dev->phy.type) {
2735 case B43_PHYTYPE_A:
2736 case B43_PHYTYPE_G:
2737 case B43_PHYTYPE_N:
2738 case B43_PHYTYPE_LP:
2739 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2740 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2741 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2742 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2743 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2744 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2745 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2746 if (dev->phy.type == B43_PHYTYPE_A)
2747 break;
2748 /* fallthrough */
2749 case B43_PHYTYPE_B:
2750 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2751 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2752 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2753 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2754 break;
2755 default:
2756 B43_WARN_ON(1);
2757 }
2758 }
2759
2760 /* Set the default values for the PHY TX Control Words. */
2761 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2762 {
2763 u16 ctl = 0;
2764
2765 ctl |= B43_TXH_PHY_ENC_CCK;
2766 ctl |= B43_TXH_PHY_ANT01AUTO;
2767 ctl |= B43_TXH_PHY_TXPWR;
2768
2769 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2770 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2771 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2772 }
2773
2774 /* Set the TX-Antenna for management frames sent by firmware. */
2775 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2776 {
2777 u16 ant;
2778 u16 tmp;
2779
2780 ant = b43_antenna_to_phyctl(antenna);
2781
2782 /* For ACK/CTS */
2783 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2784 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2785 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2786 /* For Probe Resposes */
2787 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2788 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2789 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2790 }
2791
2792 /* This is the opposite of b43_chip_init() */
2793 static void b43_chip_exit(struct b43_wldev *dev)
2794 {
2795 b43_phy_exit(dev);
2796 b43_gpio_cleanup(dev);
2797 /* firmware is released later */
2798 }
2799
2800 /* Initialize the chip
2801 * http://bcm-specs.sipsolutions.net/ChipInit
2802 */
2803 static int b43_chip_init(struct b43_wldev *dev)
2804 {
2805 struct b43_phy *phy = &dev->phy;
2806 int err;
2807 u32 value32, macctl;
2808 u16 value16;
2809
2810 /* Initialize the MAC control */
2811 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2812 if (dev->phy.gmode)
2813 macctl |= B43_MACCTL_GMODE;
2814 macctl |= B43_MACCTL_INFRA;
2815 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2816
2817 err = b43_request_firmware(dev);
2818 if (err)
2819 goto out;
2820 err = b43_upload_microcode(dev);
2821 if (err)
2822 goto out; /* firmware is released later */
2823
2824 err = b43_gpio_init(dev);
2825 if (err)
2826 goto out; /* firmware is released later */
2827
2828 err = b43_upload_initvals(dev);
2829 if (err)
2830 goto err_gpio_clean;
2831
2832 /* Turn the Analog on and initialize the PHY. */
2833 phy->ops->switch_analog(dev, 1);
2834 err = b43_phy_init(dev);
2835 if (err)
2836 goto err_gpio_clean;
2837
2838 /* Disable Interference Mitigation. */
2839 if (phy->ops->interf_mitigation)
2840 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2841
2842 /* Select the antennae */
2843 if (phy->ops->set_rx_antenna)
2844 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2845 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2846
2847 if (phy->type == B43_PHYTYPE_B) {
2848 value16 = b43_read16(dev, 0x005E);
2849 value16 |= 0x0004;
2850 b43_write16(dev, 0x005E, value16);
2851 }
2852 b43_write32(dev, 0x0100, 0x01000000);
2853 if (dev->dev->id.revision < 5)
2854 b43_write32(dev, 0x010C, 0x01000000);
2855
2856 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2857 & ~B43_MACCTL_INFRA);
2858 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2859 | B43_MACCTL_INFRA);
2860
2861 /* Probe Response Timeout value */
2862 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2863 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2864
2865 /* Initially set the wireless operation mode. */
2866 b43_adjust_opmode(dev);
2867
2868 if (dev->dev->id.revision < 3) {
2869 b43_write16(dev, 0x060E, 0x0000);
2870 b43_write16(dev, 0x0610, 0x8000);
2871 b43_write16(dev, 0x0604, 0x0000);
2872 b43_write16(dev, 0x0606, 0x0200);
2873 } else {
2874 b43_write32(dev, 0x0188, 0x80000000);
2875 b43_write32(dev, 0x018C, 0x02000000);
2876 }
2877 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2878 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2879 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2880 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2881 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2882 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2883 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2884
2885 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2886 value32 |= 0x00100000;
2887 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2888
2889 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2890 dev->dev->bus->chipco.fast_pwrup_delay);
2891
2892 err = 0;
2893 b43dbg(dev->wl, "Chip initialized\n");
2894 out:
2895 return err;
2896
2897 err_gpio_clean:
2898 b43_gpio_cleanup(dev);
2899 return err;
2900 }
2901
2902 static void b43_periodic_every60sec(struct b43_wldev *dev)
2903 {
2904 const struct b43_phy_operations *ops = dev->phy.ops;
2905
2906 if (ops->pwork_60sec)
2907 ops->pwork_60sec(dev);
2908
2909 /* Force check the TX power emission now. */
2910 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2911 }
2912
2913 static void b43_periodic_every30sec(struct b43_wldev *dev)
2914 {
2915 /* Update device statistics. */
2916 b43_calculate_link_quality(dev);
2917 }
2918
2919 static void b43_periodic_every15sec(struct b43_wldev *dev)
2920 {
2921 struct b43_phy *phy = &dev->phy;
2922 u16 wdr;
2923
2924 if (dev->fw.opensource) {
2925 /* Check if the firmware is still alive.
2926 * It will reset the watchdog counter to 0 in its idle loop. */
2927 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2928 if (unlikely(wdr)) {
2929 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2930 b43_controller_restart(dev, "Firmware watchdog");
2931 return;
2932 } else {
2933 b43_shm_write16(dev, B43_SHM_SCRATCH,
2934 B43_WATCHDOG_REG, 1);
2935 }
2936 }
2937
2938 if (phy->ops->pwork_15sec)
2939 phy->ops->pwork_15sec(dev);
2940
2941 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2942 wmb();
2943
2944 #if B43_DEBUG
2945 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
2946 unsigned int i;
2947
2948 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
2949 dev->irq_count / 15,
2950 dev->tx_count / 15,
2951 dev->rx_count / 15);
2952 dev->irq_count = 0;
2953 dev->tx_count = 0;
2954 dev->rx_count = 0;
2955 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
2956 if (dev->irq_bit_count[i]) {
2957 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
2958 dev->irq_bit_count[i] / 15, i, (1 << i));
2959 dev->irq_bit_count[i] = 0;
2960 }
2961 }
2962 }
2963 #endif
2964 }
2965
2966 static void do_periodic_work(struct b43_wldev *dev)
2967 {
2968 unsigned int state;
2969
2970 state = dev->periodic_state;
2971 if (state % 4 == 0)
2972 b43_periodic_every60sec(dev);
2973 if (state % 2 == 0)
2974 b43_periodic_every30sec(dev);
2975 b43_periodic_every15sec(dev);
2976 }
2977
2978 /* Periodic work locking policy:
2979 * The whole periodic work handler is protected by
2980 * wl->mutex. If another lock is needed somewhere in the
2981 * pwork callchain, it's acquired in-place, where it's needed.
2982 */
2983 static void b43_periodic_work_handler(struct work_struct *work)
2984 {
2985 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2986 periodic_work.work);
2987 struct b43_wl *wl = dev->wl;
2988 unsigned long delay;
2989
2990 mutex_lock(&wl->mutex);
2991
2992 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2993 goto out;
2994 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2995 goto out_requeue;
2996
2997 do_periodic_work(dev);
2998
2999 dev->periodic_state++;
3000 out_requeue:
3001 if (b43_debug(dev, B43_DBG_PWORK_FAST))
3002 delay = msecs_to_jiffies(50);
3003 else
3004 delay = round_jiffies_relative(HZ * 15);
3005 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
3006 out:
3007 mutex_unlock(&wl->mutex);
3008 }
3009
3010 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3011 {
3012 struct delayed_work *work = &dev->periodic_work;
3013
3014 dev->periodic_state = 0;
3015 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3016 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3017 }
3018
3019 /* Check if communication with the device works correctly. */
3020 static int b43_validate_chipaccess(struct b43_wldev *dev)
3021 {
3022 u32 v, backup0, backup4;
3023
3024 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3025 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3026
3027 /* Check for read/write and endianness problems. */
3028 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3029 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3030 goto error;
3031 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3032 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3033 goto error;
3034
3035 /* Check if unaligned 32bit SHM_SHARED access works properly.
3036 * However, don't bail out on failure, because it's noncritical. */
3037 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3038 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3039 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3040 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3041 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3042 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3043 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3044 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3045 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3046 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3047 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3048 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3049
3050 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3051 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3052
3053 if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
3054 /* The 32bit register shadows the two 16bit registers
3055 * with update sideeffects. Validate this. */
3056 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3057 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3058 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3059 goto error;
3060 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3061 goto error;
3062 }
3063 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3064
3065 v = b43_read32(dev, B43_MMIO_MACCTL);
3066 v |= B43_MACCTL_GMODE;
3067 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3068 goto error;
3069
3070 return 0;
3071 error:
3072 b43err(dev->wl, "Failed to validate the chipaccess\n");
3073 return -ENODEV;
3074 }
3075
3076 static void b43_security_init(struct b43_wldev *dev)
3077 {
3078 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3079 /* KTP is a word address, but we address SHM bytewise.
3080 * So multiply by two.
3081 */
3082 dev->ktp *= 2;
3083 /* Number of RCMTA address slots */
3084 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3085 /* Clear the key memory. */
3086 b43_clear_keys(dev);
3087 }
3088
3089 #ifdef CONFIG_B43_HWRNG
3090 static int b43_rng_read(struct hwrng *rng, u32 *data)
3091 {
3092 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3093 struct b43_wldev *dev;
3094 int count = -ENODEV;
3095
3096 mutex_lock(&wl->mutex);
3097 dev = wl->current_dev;
3098 if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3099 *data = b43_read16(dev, B43_MMIO_RNG);
3100 count = sizeof(u16);
3101 }
3102 mutex_unlock(&wl->mutex);
3103
3104 return count;
3105 }
3106 #endif /* CONFIG_B43_HWRNG */
3107
3108 static void b43_rng_exit(struct b43_wl *wl)
3109 {
3110 #ifdef CONFIG_B43_HWRNG
3111 if (wl->rng_initialized)
3112 hwrng_unregister(&wl->rng);
3113 #endif /* CONFIG_B43_HWRNG */
3114 }
3115
3116 static int b43_rng_init(struct b43_wl *wl)
3117 {
3118 int err = 0;
3119
3120 #ifdef CONFIG_B43_HWRNG
3121 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3122 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3123 wl->rng.name = wl->rng_name;
3124 wl->rng.data_read = b43_rng_read;
3125 wl->rng.priv = (unsigned long)wl;
3126 wl->rng_initialized = 1;
3127 err = hwrng_register(&wl->rng);
3128 if (err) {
3129 wl->rng_initialized = 0;
3130 b43err(wl, "Failed to register the random "
3131 "number generator (%d)\n", err);
3132 }
3133 #endif /* CONFIG_B43_HWRNG */
3134
3135 return err;
3136 }
3137
3138 static void b43_tx_work(struct work_struct *work)
3139 {
3140 struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3141 struct b43_wldev *dev;
3142 struct sk_buff *skb;
3143 int err = 0;
3144
3145 mutex_lock(&wl->mutex);
3146 dev = wl->current_dev;
3147 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3148 mutex_unlock(&wl->mutex);
3149 return;
3150 }
3151
3152 while (skb_queue_len(&wl->tx_queue)) {
3153 skb = skb_dequeue(&wl->tx_queue);
3154
3155 if (b43_using_pio_transfers(dev))
3156 err = b43_pio_tx(dev, skb);
3157 else
3158 err = b43_dma_tx(dev, skb);
3159 if (unlikely(err))
3160 dev_kfree_skb(skb); /* Drop it */
3161 }
3162
3163 #if B43_DEBUG
3164 dev->tx_count++;
3165 #endif
3166 mutex_unlock(&wl->mutex);
3167 }
3168
3169 static int b43_op_tx(struct ieee80211_hw *hw,
3170 struct sk_buff *skb)
3171 {
3172 struct b43_wl *wl = hw_to_b43_wl(hw);
3173
3174 if (unlikely(skb->len < 2 + 2 + 6)) {
3175 /* Too short, this can't be a valid frame. */
3176 dev_kfree_skb_any(skb);
3177 return NETDEV_TX_OK;
3178 }
3179 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3180
3181 skb_queue_tail(&wl->tx_queue, skb);
3182 ieee80211_queue_work(wl->hw, &wl->tx_work);
3183
3184 return NETDEV_TX_OK;
3185 }
3186
3187 static void b43_qos_params_upload(struct b43_wldev *dev,
3188 const struct ieee80211_tx_queue_params *p,
3189 u16 shm_offset)
3190 {
3191 u16 params[B43_NR_QOSPARAMS];
3192 int bslots, tmp;
3193 unsigned int i;
3194
3195 if (!dev->qos_enabled)
3196 return;
3197
3198 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3199
3200 memset(&params, 0, sizeof(params));
3201
3202 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3203 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3204 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3205 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3206 params[B43_QOSPARAM_AIFS] = p->aifs;
3207 params[B43_QOSPARAM_BSLOTS] = bslots;
3208 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3209
3210 for (i = 0; i < ARRAY_SIZE(params); i++) {
3211 if (i == B43_QOSPARAM_STATUS) {
3212 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3213 shm_offset + (i * 2));
3214 /* Mark the parameters as updated. */
3215 tmp |= 0x100;
3216 b43_shm_write16(dev, B43_SHM_SHARED,
3217 shm_offset + (i * 2),
3218 tmp);
3219 } else {
3220 b43_shm_write16(dev, B43_SHM_SHARED,
3221 shm_offset + (i * 2),
3222 params[i]);
3223 }
3224 }
3225 }
3226
3227 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3228 static const u16 b43_qos_shm_offsets[] = {
3229 /* [mac80211-queue-nr] = SHM_OFFSET, */
3230 [0] = B43_QOS_VOICE,
3231 [1] = B43_QOS_VIDEO,
3232 [2] = B43_QOS_BESTEFFORT,
3233 [3] = B43_QOS_BACKGROUND,
3234 };
3235
3236 /* Update all QOS parameters in hardware. */
3237 static void b43_qos_upload_all(struct b43_wldev *dev)
3238 {
3239 struct b43_wl *wl = dev->wl;
3240 struct b43_qos_params *params;
3241 unsigned int i;
3242
3243 if (!dev->qos_enabled)
3244 return;
3245
3246 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3247 ARRAY_SIZE(wl->qos_params));
3248
3249 b43_mac_suspend(dev);
3250 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3251 params = &(wl->qos_params[i]);
3252 b43_qos_params_upload(dev, &(params->p),
3253 b43_qos_shm_offsets[i]);
3254 }
3255 b43_mac_enable(dev);
3256 }
3257
3258 static void b43_qos_clear(struct b43_wl *wl)
3259 {
3260 struct b43_qos_params *params;
3261 unsigned int i;
3262
3263 /* Initialize QoS parameters to sane defaults. */
3264
3265 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3266 ARRAY_SIZE(wl->qos_params));
3267
3268 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3269 params = &(wl->qos_params[i]);
3270
3271 switch (b43_qos_shm_offsets[i]) {
3272 case B43_QOS_VOICE:
3273 params->p.txop = 0;
3274 params->p.aifs = 2;
3275 params->p.cw_min = 0x0001;
3276 params->p.cw_max = 0x0001;
3277 break;
3278 case B43_QOS_VIDEO:
3279 params->p.txop = 0;
3280 params->p.aifs = 2;
3281 params->p.cw_min = 0x0001;
3282 params->p.cw_max = 0x0001;
3283 break;
3284 case B43_QOS_BESTEFFORT:
3285 params->p.txop = 0;
3286 params->p.aifs = 3;
3287 params->p.cw_min = 0x0001;
3288 params->p.cw_max = 0x03FF;
3289 break;
3290 case B43_QOS_BACKGROUND:
3291 params->p.txop = 0;
3292 params->p.aifs = 7;
3293 params->p.cw_min = 0x0001;
3294 params->p.cw_max = 0x03FF;
3295 break;
3296 default:
3297 B43_WARN_ON(1);
3298 }
3299 }
3300 }
3301
3302 /* Initialize the core's QOS capabilities */
3303 static void b43_qos_init(struct b43_wldev *dev)
3304 {
3305 if (!dev->qos_enabled) {
3306 /* Disable QOS support. */
3307 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3308 b43_write16(dev, B43_MMIO_IFSCTL,
3309 b43_read16(dev, B43_MMIO_IFSCTL)
3310 & ~B43_MMIO_IFSCTL_USE_EDCF);
3311 b43dbg(dev->wl, "QoS disabled\n");
3312 return;
3313 }
3314
3315 /* Upload the current QOS parameters. */
3316 b43_qos_upload_all(dev);
3317
3318 /* Enable QOS support. */
3319 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3320 b43_write16(dev, B43_MMIO_IFSCTL,
3321 b43_read16(dev, B43_MMIO_IFSCTL)
3322 | B43_MMIO_IFSCTL_USE_EDCF);
3323 b43dbg(dev->wl, "QoS enabled\n");
3324 }
3325
3326 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3327 const struct ieee80211_tx_queue_params *params)
3328 {
3329 struct b43_wl *wl = hw_to_b43_wl(hw);
3330 struct b43_wldev *dev;
3331 unsigned int queue = (unsigned int)_queue;
3332 int err = -ENODEV;
3333
3334 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3335 /* Queue not available or don't support setting
3336 * params on this queue. Return success to not
3337 * confuse mac80211. */
3338 return 0;
3339 }
3340 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3341 ARRAY_SIZE(wl->qos_params));
3342
3343 mutex_lock(&wl->mutex);
3344 dev = wl->current_dev;
3345 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3346 goto out_unlock;
3347
3348 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3349 b43_mac_suspend(dev);
3350 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3351 b43_qos_shm_offsets[queue]);
3352 b43_mac_enable(dev);
3353 err = 0;
3354
3355 out_unlock:
3356 mutex_unlock(&wl->mutex);
3357
3358 return err;
3359 }
3360
3361 static int b43_op_get_stats(struct ieee80211_hw *hw,
3362 struct ieee80211_low_level_stats *stats)
3363 {
3364 struct b43_wl *wl = hw_to_b43_wl(hw);
3365
3366 mutex_lock(&wl->mutex);
3367 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3368 mutex_unlock(&wl->mutex);
3369
3370 return 0;
3371 }
3372
3373 static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
3374 {
3375 struct b43_wl *wl = hw_to_b43_wl(hw);
3376 struct b43_wldev *dev;
3377 u64 tsf;
3378
3379 mutex_lock(&wl->mutex);
3380 dev = wl->current_dev;
3381
3382 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3383 b43_tsf_read(dev, &tsf);
3384 else
3385 tsf = 0;
3386
3387 mutex_unlock(&wl->mutex);
3388
3389 return tsf;
3390 }
3391
3392 static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3393 {
3394 struct b43_wl *wl = hw_to_b43_wl(hw);
3395 struct b43_wldev *dev;
3396
3397 mutex_lock(&wl->mutex);
3398 dev = wl->current_dev;
3399
3400 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3401 b43_tsf_write(dev, tsf);
3402
3403 mutex_unlock(&wl->mutex);
3404 }
3405
3406 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3407 {
3408 struct ssb_device *sdev = dev->dev;
3409 u32 tmslow;
3410
3411 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3412 tmslow &= ~B43_TMSLOW_GMODE;
3413 tmslow |= B43_TMSLOW_PHYRESET;
3414 tmslow |= SSB_TMSLOW_FGC;
3415 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3416 msleep(1);
3417
3418 tmslow = ssb_read32(sdev, SSB_TMSLOW);
3419 tmslow &= ~SSB_TMSLOW_FGC;
3420 tmslow |= B43_TMSLOW_PHYRESET;
3421 ssb_write32(sdev, SSB_TMSLOW, tmslow);
3422 msleep(1);
3423 }
3424
3425 static const char *band_to_string(enum ieee80211_band band)
3426 {
3427 switch (band) {
3428 case IEEE80211_BAND_5GHZ:
3429 return "5";
3430 case IEEE80211_BAND_2GHZ:
3431 return "2.4";
3432 default:
3433 break;
3434 }
3435 B43_WARN_ON(1);
3436 return "";
3437 }
3438
3439 /* Expects wl->mutex locked */
3440 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3441 {
3442 struct b43_wldev *up_dev = NULL;
3443 struct b43_wldev *down_dev;
3444 struct b43_wldev *d;
3445 int err;
3446 bool uninitialized_var(gmode);
3447 int prev_status;
3448
3449 /* Find a device and PHY which supports the band. */
3450 list_for_each_entry(d, &wl->devlist, list) {
3451 switch (chan->band) {
3452 case IEEE80211_BAND_5GHZ:
3453 if (d->phy.supports_5ghz) {
3454 up_dev = d;
3455 gmode = 0;
3456 }
3457 break;
3458 case IEEE80211_BAND_2GHZ:
3459 if (d->phy.supports_2ghz) {
3460 up_dev = d;
3461 gmode = 1;
3462 }
3463 break;
3464 default:
3465 B43_WARN_ON(1);
3466 return -EINVAL;
3467 }
3468 if (up_dev)
3469 break;
3470 }
3471 if (!up_dev) {
3472 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3473 band_to_string(chan->band));
3474 return -ENODEV;
3475 }
3476 if ((up_dev == wl->current_dev) &&
3477 (!!wl->current_dev->phy.gmode == !!gmode)) {
3478 /* This device is already running. */
3479 return 0;
3480 }
3481 b43dbg(wl, "Switching to %s-GHz band\n",
3482 band_to_string(chan->band));
3483 down_dev = wl->current_dev;
3484
3485 prev_status = b43_status(down_dev);
3486 /* Shutdown the currently running core. */
3487 if (prev_status >= B43_STAT_STARTED)
3488 down_dev = b43_wireless_core_stop(down_dev);
3489 if (prev_status >= B43_STAT_INITIALIZED)
3490 b43_wireless_core_exit(down_dev);
3491
3492 if (down_dev != up_dev) {
3493 /* We switch to a different core, so we put PHY into
3494 * RESET on the old core. */
3495 b43_put_phy_into_reset(down_dev);
3496 }
3497
3498 /* Now start the new core. */
3499 up_dev->phy.gmode = gmode;
3500 if (prev_status >= B43_STAT_INITIALIZED) {
3501 err = b43_wireless_core_init(up_dev);
3502 if (err) {
3503 b43err(wl, "Fatal: Could not initialize device for "
3504 "selected %s-GHz band\n",
3505 band_to_string(chan->band));
3506 goto init_failure;
3507 }
3508 }
3509 if (prev_status >= B43_STAT_STARTED) {
3510 err = b43_wireless_core_start(up_dev);
3511 if (err) {
3512 b43err(wl, "Fatal: Coult not start device for "
3513 "selected %s-GHz band\n",
3514 band_to_string(chan->band));
3515 b43_wireless_core_exit(up_dev);
3516 goto init_failure;
3517 }
3518 }
3519 B43_WARN_ON(b43_status(up_dev) != prev_status);
3520
3521 wl->current_dev = up_dev;
3522
3523 return 0;
3524 init_failure:
3525 /* Whoops, failed to init the new core. No core is operating now. */
3526 wl->current_dev = NULL;
3527 return err;
3528 }
3529
3530 /* Write the short and long frame retry limit values. */
3531 static void b43_set_retry_limits(struct b43_wldev *dev,
3532 unsigned int short_retry,
3533 unsigned int long_retry)
3534 {
3535 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3536 * the chip-internal counter. */
3537 short_retry = min(short_retry, (unsigned int)0xF);
3538 long_retry = min(long_retry, (unsigned int)0xF);
3539
3540 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3541 short_retry);
3542 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3543 long_retry);
3544 }
3545
3546 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3547 {
3548 struct b43_wl *wl = hw_to_b43_wl(hw);
3549 struct b43_wldev *dev;
3550 struct b43_phy *phy;
3551 struct ieee80211_conf *conf = &hw->conf;
3552 int antenna;
3553 int err = 0;
3554
3555 mutex_lock(&wl->mutex);
3556
3557 /* Switch the band (if necessary). This might change the active core. */
3558 err = b43_switch_band(wl, conf->channel);
3559 if (err)
3560 goto out_unlock_mutex;
3561 dev = wl->current_dev;
3562 phy = &dev->phy;
3563
3564 if (conf_is_ht(conf))
3565 phy->is_40mhz =
3566 (conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf));
3567 else
3568 phy->is_40mhz = false;
3569
3570 b43_mac_suspend(dev);
3571
3572 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3573 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3574 conf->long_frame_max_tx_count);
3575 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3576 if (!changed)
3577 goto out_mac_enable;
3578
3579 /* Switch to the requested channel.
3580 * The firmware takes care of races with the TX handler. */
3581 if (conf->channel->hw_value != phy->channel)
3582 b43_switch_channel(dev, conf->channel->hw_value);
3583
3584 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
3585
3586 /* Adjust the desired TX power level. */
3587 if (conf->power_level != 0) {
3588 if (conf->power_level != phy->desired_txpower) {
3589 phy->desired_txpower = conf->power_level;
3590 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3591 B43_TXPWR_IGNORE_TSSI);
3592 }
3593 }
3594
3595 /* Antennas for RX and management frame TX. */
3596 antenna = B43_ANTENNA_DEFAULT;
3597 b43_mgmtframe_txantenna(dev, antenna);
3598 antenna = B43_ANTENNA_DEFAULT;
3599 if (phy->ops->set_rx_antenna)
3600 phy->ops->set_rx_antenna(dev, antenna);
3601
3602 if (wl->radio_enabled != phy->radio_on) {
3603 if (wl->radio_enabled) {
3604 b43_software_rfkill(dev, false);
3605 b43info(dev->wl, "Radio turned on by software\n");
3606 if (!dev->radio_hw_enable) {
3607 b43info(dev->wl, "The hardware RF-kill button "
3608 "still turns the radio physically off. "
3609 "Press the button to turn it on.\n");
3610 }
3611 } else {
3612 b43_software_rfkill(dev, true);
3613 b43info(dev->wl, "Radio turned off by software\n");
3614 }
3615 }
3616
3617 out_mac_enable:
3618 b43_mac_enable(dev);
3619 out_unlock_mutex:
3620 mutex_unlock(&wl->mutex);
3621
3622 return err;
3623 }
3624
3625 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3626 {
3627 struct ieee80211_supported_band *sband =
3628 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3629 struct ieee80211_rate *rate;
3630 int i;
3631 u16 basic, direct, offset, basic_offset, rateptr;
3632
3633 for (i = 0; i < sband->n_bitrates; i++) {
3634 rate = &sband->bitrates[i];
3635
3636 if (b43_is_cck_rate(rate->hw_value)) {
3637 direct = B43_SHM_SH_CCKDIRECT;
3638 basic = B43_SHM_SH_CCKBASIC;
3639 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3640 offset &= 0xF;
3641 } else {
3642 direct = B43_SHM_SH_OFDMDIRECT;
3643 basic = B43_SHM_SH_OFDMBASIC;
3644 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3645 offset &= 0xF;
3646 }
3647
3648 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3649
3650 if (b43_is_cck_rate(rate->hw_value)) {
3651 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3652 basic_offset &= 0xF;
3653 } else {
3654 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3655 basic_offset &= 0xF;
3656 }
3657
3658 /*
3659 * Get the pointer that we need to point to
3660 * from the direct map
3661 */
3662 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3663 direct + 2 * basic_offset);
3664 /* and write it to the basic map */
3665 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3666 rateptr);
3667 }
3668 }
3669
3670 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3671 struct ieee80211_vif *vif,
3672 struct ieee80211_bss_conf *conf,
3673 u32 changed)
3674 {
3675 struct b43_wl *wl = hw_to_b43_wl(hw);
3676 struct b43_wldev *dev;
3677
3678 mutex_lock(&wl->mutex);
3679
3680 dev = wl->current_dev;
3681 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3682 goto out_unlock_mutex;
3683
3684 B43_WARN_ON(wl->vif != vif);
3685
3686 if (changed & BSS_CHANGED_BSSID) {
3687 if (conf->bssid)
3688 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3689 else
3690 memset(wl->bssid, 0, ETH_ALEN);
3691 }
3692
3693 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3694 if (changed & BSS_CHANGED_BEACON &&
3695 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3696 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3697 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3698 b43_update_templates(wl);
3699
3700 if (changed & BSS_CHANGED_BSSID)
3701 b43_write_mac_bssid_templates(dev);
3702 }
3703
3704 b43_mac_suspend(dev);
3705
3706 /* Update templates for AP/mesh mode. */
3707 if (changed & BSS_CHANGED_BEACON_INT &&
3708 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3709 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3710 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3711 b43_set_beacon_int(dev, conf->beacon_int);
3712
3713 if (changed & BSS_CHANGED_BASIC_RATES)
3714 b43_update_basic_rates(dev, conf->basic_rates);
3715
3716 if (changed & BSS_CHANGED_ERP_SLOT) {
3717 if (conf->use_short_slot)
3718 b43_short_slot_timing_enable(dev);
3719 else
3720 b43_short_slot_timing_disable(dev);
3721 }
3722
3723 b43_mac_enable(dev);
3724 out_unlock_mutex:
3725 mutex_unlock(&wl->mutex);
3726 }
3727
3728 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3729 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3730 struct ieee80211_key_conf *key)
3731 {
3732 struct b43_wl *wl = hw_to_b43_wl(hw);
3733 struct b43_wldev *dev;
3734 u8 algorithm;
3735 u8 index;
3736 int err;
3737 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
3738
3739 if (modparam_nohwcrypt)
3740 return -ENOSPC; /* User disabled HW-crypto */
3741
3742 mutex_lock(&wl->mutex);
3743
3744 dev = wl->current_dev;
3745 err = -ENODEV;
3746 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3747 goto out_unlock;
3748
3749 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
3750 /* We don't have firmware for the crypto engine.
3751 * Must use software-crypto. */
3752 err = -EOPNOTSUPP;
3753 goto out_unlock;
3754 }
3755
3756 err = -EINVAL;
3757 switch (key->alg) {
3758 case ALG_WEP:
3759 if (key->keylen == WLAN_KEY_LEN_WEP40)
3760 algorithm = B43_SEC_ALGO_WEP40;
3761 else
3762 algorithm = B43_SEC_ALGO_WEP104;
3763 break;
3764 case ALG_TKIP:
3765 algorithm = B43_SEC_ALGO_TKIP;
3766 break;
3767 case ALG_CCMP:
3768 algorithm = B43_SEC_ALGO_AES;
3769 break;
3770 default:
3771 B43_WARN_ON(1);
3772 goto out_unlock;
3773 }
3774 index = (u8) (key->keyidx);
3775 if (index > 3)
3776 goto out_unlock;
3777
3778 switch (cmd) {
3779 case SET_KEY:
3780 if (algorithm == B43_SEC_ALGO_TKIP &&
3781 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3782 !modparam_hwtkip)) {
3783 /* We support only pairwise key */
3784 err = -EOPNOTSUPP;
3785 goto out_unlock;
3786 }
3787
3788 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3789 if (WARN_ON(!sta)) {
3790 err = -EOPNOTSUPP;
3791 goto out_unlock;
3792 }
3793 /* Pairwise key with an assigned MAC address. */
3794 err = b43_key_write(dev, -1, algorithm,
3795 key->key, key->keylen,
3796 sta->addr, key);
3797 } else {
3798 /* Group key */
3799 err = b43_key_write(dev, index, algorithm,
3800 key->key, key->keylen, NULL, key);
3801 }
3802 if (err)
3803 goto out_unlock;
3804
3805 if (algorithm == B43_SEC_ALGO_WEP40 ||
3806 algorithm == B43_SEC_ALGO_WEP104) {
3807 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3808 } else {
3809 b43_hf_write(dev,
3810 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3811 }
3812 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3813 if (algorithm == B43_SEC_ALGO_TKIP)
3814 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3815 break;
3816 case DISABLE_KEY: {
3817 err = b43_key_clear(dev, key->hw_key_idx);
3818 if (err)
3819 goto out_unlock;
3820 break;
3821 }
3822 default:
3823 B43_WARN_ON(1);
3824 }
3825
3826 out_unlock:
3827 if (!err) {
3828 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3829 "mac: %pM\n",
3830 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3831 sta ? sta->addr : bcast_addr);
3832 b43_dump_keymemory(dev);
3833 }
3834 mutex_unlock(&wl->mutex);
3835
3836 return err;
3837 }
3838
3839 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3840 unsigned int changed, unsigned int *fflags,
3841 u64 multicast)
3842 {
3843 struct b43_wl *wl = hw_to_b43_wl(hw);
3844 struct b43_wldev *dev;
3845
3846 mutex_lock(&wl->mutex);
3847 dev = wl->current_dev;
3848 if (!dev) {
3849 *fflags = 0;
3850 goto out_unlock;
3851 }
3852
3853 *fflags &= FIF_PROMISC_IN_BSS |
3854 FIF_ALLMULTI |
3855 FIF_FCSFAIL |
3856 FIF_PLCPFAIL |
3857 FIF_CONTROL |
3858 FIF_OTHER_BSS |
3859 FIF_BCN_PRBRESP_PROMISC;
3860
3861 changed &= FIF_PROMISC_IN_BSS |
3862 FIF_ALLMULTI |
3863 FIF_FCSFAIL |
3864 FIF_PLCPFAIL |
3865 FIF_CONTROL |
3866 FIF_OTHER_BSS |
3867 FIF_BCN_PRBRESP_PROMISC;
3868
3869 wl->filter_flags = *fflags;
3870
3871 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3872 b43_adjust_opmode(dev);
3873
3874 out_unlock:
3875 mutex_unlock(&wl->mutex);
3876 }
3877
3878 /* Locking: wl->mutex
3879 * Returns the current dev. This might be different from the passed in dev,
3880 * because the core might be gone away while we unlocked the mutex. */
3881 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
3882 {
3883 struct b43_wl *wl = dev->wl;
3884 struct b43_wldev *orig_dev;
3885 u32 mask;
3886
3887 redo:
3888 if (!dev || b43_status(dev) < B43_STAT_STARTED)
3889 return dev;
3890
3891 /* Cancel work. Unlock to avoid deadlocks. */
3892 mutex_unlock(&wl->mutex);
3893 cancel_delayed_work_sync(&dev->periodic_work);
3894 cancel_work_sync(&wl->tx_work);
3895 mutex_lock(&wl->mutex);
3896 dev = wl->current_dev;
3897 if (!dev || b43_status(dev) < B43_STAT_STARTED) {
3898 /* Whoops, aliens ate up the device while we were unlocked. */
3899 return dev;
3900 }
3901
3902 /* Disable interrupts on the device. */
3903 b43_set_status(dev, B43_STAT_INITIALIZED);
3904 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3905 /* wl->mutex is locked. That is enough. */
3906 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3907 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3908 } else {
3909 spin_lock_irq(&wl->hardirq_lock);
3910 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
3911 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
3912 spin_unlock_irq(&wl->hardirq_lock);
3913 }
3914 /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
3915 orig_dev = dev;
3916 mutex_unlock(&wl->mutex);
3917 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3918 b43_sdio_free_irq(dev);
3919 } else {
3920 synchronize_irq(dev->dev->irq);
3921 free_irq(dev->dev->irq, dev);
3922 }
3923 mutex_lock(&wl->mutex);
3924 dev = wl->current_dev;
3925 if (!dev)
3926 return dev;
3927 if (dev != orig_dev) {
3928 if (b43_status(dev) >= B43_STAT_STARTED)
3929 goto redo;
3930 return dev;
3931 }
3932 mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
3933 B43_WARN_ON(mask != 0xFFFFFFFF && mask);
3934
3935 /* Drain the TX queue */
3936 while (skb_queue_len(&wl->tx_queue))
3937 dev_kfree_skb(skb_dequeue(&wl->tx_queue));
3938
3939 b43_mac_suspend(dev);
3940 b43_leds_exit(dev);
3941 b43dbg(wl, "Wireless interface stopped\n");
3942
3943 return dev;
3944 }
3945
3946 /* Locking: wl->mutex */
3947 static int b43_wireless_core_start(struct b43_wldev *dev)
3948 {
3949 int err;
3950
3951 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3952
3953 drain_txstatus_queue(dev);
3954 if (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) {
3955 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
3956 if (err) {
3957 b43err(dev->wl, "Cannot request SDIO IRQ\n");
3958 goto out;
3959 }
3960 } else {
3961 err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
3962 b43_interrupt_thread_handler,
3963 IRQF_SHARED, KBUILD_MODNAME, dev);
3964 if (err) {
3965 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3966 goto out;
3967 }
3968 }
3969
3970 /* We are ready to run. */
3971 ieee80211_wake_queues(dev->wl->hw);
3972 b43_set_status(dev, B43_STAT_STARTED);
3973
3974 /* Start data flow (TX/RX). */
3975 b43_mac_enable(dev);
3976 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3977
3978 /* Start maintainance work */
3979 b43_periodic_tasks_setup(dev);
3980
3981 b43_leds_init(dev);
3982
3983 b43dbg(dev->wl, "Wireless interface started\n");
3984 out:
3985 return err;
3986 }
3987
3988 /* Get PHY and RADIO versioning numbers */
3989 static int b43_phy_versioning(struct b43_wldev *dev)
3990 {
3991 struct b43_phy *phy = &dev->phy;
3992 u32 tmp;
3993 u8 analog_type;
3994 u8 phy_type;
3995 u8 phy_rev;
3996 u16 radio_manuf;
3997 u16 radio_ver;
3998 u16 radio_rev;
3999 int unsupported = 0;
4000
4001 /* Get PHY versioning */
4002 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4003 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4004 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4005 phy_rev = (tmp & B43_PHYVER_VERSION);
4006 switch (phy_type) {
4007 case B43_PHYTYPE_A:
4008 if (phy_rev >= 4)
4009 unsupported = 1;
4010 break;
4011 case B43_PHYTYPE_B:
4012 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
4013 && phy_rev != 7)
4014 unsupported = 1;
4015 break;
4016 case B43_PHYTYPE_G:
4017 if (phy_rev > 9)
4018 unsupported = 1;
4019 break;
4020 #ifdef CONFIG_B43_NPHY
4021 case B43_PHYTYPE_N:
4022 if (phy_rev > 4)
4023 unsupported = 1;
4024 break;
4025 #endif
4026 #ifdef CONFIG_B43_PHY_LP
4027 case B43_PHYTYPE_LP:
4028 if (phy_rev > 2)
4029 unsupported = 1;
4030 break;
4031 #endif
4032 default:
4033 unsupported = 1;
4034 };
4035 if (unsupported) {
4036 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
4037 "(Analog %u, Type %u, Revision %u)\n",
4038 analog_type, phy_type, phy_rev);
4039 return -EOPNOTSUPP;
4040 }
4041 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
4042 analog_type, phy_type, phy_rev);
4043
4044 /* Get RADIO versioning */
4045 if (dev->dev->bus->chip_id == 0x4317) {
4046 if (dev->dev->bus->chip_rev == 0)
4047 tmp = 0x3205017F;
4048 else if (dev->dev->bus->chip_rev == 1)
4049 tmp = 0x4205017F;
4050 else
4051 tmp = 0x5205017F;
4052 } else {
4053 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4054 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4055 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
4056 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
4057 }
4058 radio_manuf = (tmp & 0x00000FFF);
4059 radio_ver = (tmp & 0x0FFFF000) >> 12;
4060 radio_rev = (tmp & 0xF0000000) >> 28;
4061 if (radio_manuf != 0x17F /* Broadcom */)
4062 unsupported = 1;
4063 switch (phy_type) {
4064 case B43_PHYTYPE_A:
4065 if (radio_ver != 0x2060)
4066 unsupported = 1;
4067 if (radio_rev != 1)
4068 unsupported = 1;
4069 if (radio_manuf != 0x17F)
4070 unsupported = 1;
4071 break;
4072 case B43_PHYTYPE_B:
4073 if ((radio_ver & 0xFFF0) != 0x2050)
4074 unsupported = 1;
4075 break;
4076 case B43_PHYTYPE_G:
4077 if (radio_ver != 0x2050)
4078 unsupported = 1;
4079 break;
4080 case B43_PHYTYPE_N:
4081 if (radio_ver != 0x2055 && radio_ver != 0x2056)
4082 unsupported = 1;
4083 break;
4084 case B43_PHYTYPE_LP:
4085 if (radio_ver != 0x2062 && radio_ver != 0x2063)
4086 unsupported = 1;
4087 break;
4088 default:
4089 B43_WARN_ON(1);
4090 }
4091 if (unsupported) {
4092 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
4093 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
4094 radio_manuf, radio_ver, radio_rev);
4095 return -EOPNOTSUPP;
4096 }
4097 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
4098 radio_manuf, radio_ver, radio_rev);
4099
4100 phy->radio_manuf = radio_manuf;
4101 phy->radio_ver = radio_ver;
4102 phy->radio_rev = radio_rev;
4103
4104 phy->analog = analog_type;
4105 phy->type = phy_type;
4106 phy->rev = phy_rev;
4107
4108 return 0;
4109 }
4110
4111 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4112 struct b43_phy *phy)
4113 {
4114 phy->hardware_power_control = !!modparam_hwpctl;
4115 phy->next_txpwr_check_time = jiffies;
4116 /* PHY TX errors counter. */
4117 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4118
4119 #if B43_DEBUG
4120 phy->phy_locked = 0;
4121 phy->radio_locked = 0;
4122 #endif
4123 }
4124
4125 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4126 {
4127 dev->dfq_valid = 0;
4128
4129 /* Assume the radio is enabled. If it's not enabled, the state will
4130 * immediately get fixed on the first periodic work run. */
4131 dev->radio_hw_enable = 1;
4132
4133 /* Stats */
4134 memset(&dev->stats, 0, sizeof(dev->stats));
4135
4136 setup_struct_phy_for_init(dev, &dev->phy);
4137
4138 /* IRQ related flags */
4139 dev->irq_reason = 0;
4140 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4141 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4142 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4143 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4144
4145 dev->mac_suspended = 1;
4146
4147 /* Noise calculation context */
4148 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4149 }
4150
4151 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4152 {
4153 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
4154 u64 hf;
4155
4156 if (!modparam_btcoex)
4157 return;
4158 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4159 return;
4160 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4161 return;
4162
4163 hf = b43_hf_read(dev);
4164 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4165 hf |= B43_HF_BTCOEXALT;
4166 else
4167 hf |= B43_HF_BTCOEX;
4168 b43_hf_write(dev, hf);
4169 }
4170
4171 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4172 {
4173 if (!modparam_btcoex)
4174 return;
4175 //TODO
4176 }
4177
4178 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4179 {
4180 #ifdef CONFIG_SSB_DRIVER_PCICORE
4181 struct ssb_bus *bus = dev->dev->bus;
4182 u32 tmp;
4183
4184 if (bus->pcicore.dev &&
4185 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
4186 bus->pcicore.dev->id.revision <= 5) {
4187 /* IMCFGLO timeouts workaround. */
4188 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
4189 switch (bus->bustype) {
4190 case SSB_BUSTYPE_PCI:
4191 case SSB_BUSTYPE_PCMCIA:
4192 tmp &= ~SSB_IMCFGLO_REQTO;
4193 tmp &= ~SSB_IMCFGLO_SERTO;
4194 tmp |= 0x32;
4195 break;
4196 case SSB_BUSTYPE_SSB:
4197 tmp &= ~SSB_IMCFGLO_REQTO;
4198 tmp &= ~SSB_IMCFGLO_SERTO;
4199 tmp |= 0x53;
4200 break;
4201 default:
4202 break;
4203 }
4204 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
4205 }
4206 #endif /* CONFIG_SSB_DRIVER_PCICORE */
4207 }
4208
4209 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4210 {
4211 u16 pu_delay;
4212
4213 /* The time value is in microseconds. */
4214 if (dev->phy.type == B43_PHYTYPE_A)
4215 pu_delay = 3700;
4216 else
4217 pu_delay = 1050;
4218 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4219 pu_delay = 500;
4220 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4221 pu_delay = max(pu_delay, (u16)2400);
4222
4223 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4224 }
4225
4226 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4227 static void b43_set_pretbtt(struct b43_wldev *dev)
4228 {
4229 u16 pretbtt;
4230
4231 /* The time value is in microseconds. */
4232 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4233 pretbtt = 2;
4234 } else {
4235 if (dev->phy.type == B43_PHYTYPE_A)
4236 pretbtt = 120;
4237 else
4238 pretbtt = 250;
4239 }
4240 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4241 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4242 }
4243
4244 /* Shutdown a wireless core */
4245 /* Locking: wl->mutex */
4246 static void b43_wireless_core_exit(struct b43_wldev *dev)
4247 {
4248 u32 macctl;
4249
4250 B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4251 if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4252 return;
4253 b43_set_status(dev, B43_STAT_UNINIT);
4254
4255 /* Stop the microcode PSM. */
4256 macctl = b43_read32(dev, B43_MMIO_MACCTL);
4257 macctl &= ~B43_MACCTL_PSM_RUN;
4258 macctl |= B43_MACCTL_PSM_JMP0;
4259 b43_write32(dev, B43_MMIO_MACCTL, macctl);
4260
4261 b43_dma_free(dev);
4262 b43_pio_free(dev);
4263 b43_chip_exit(dev);
4264 dev->phy.ops->switch_analog(dev, 0);
4265 if (dev->wl->current_beacon) {
4266 dev_kfree_skb_any(dev->wl->current_beacon);
4267 dev->wl->current_beacon = NULL;
4268 }
4269
4270 ssb_device_disable(dev->dev, 0);
4271 ssb_bus_may_powerdown(dev->dev->bus);
4272 }
4273
4274 /* Initialize a wireless core */
4275 static int b43_wireless_core_init(struct b43_wldev *dev)
4276 {
4277 struct ssb_bus *bus = dev->dev->bus;
4278 struct ssb_sprom *sprom = &bus->sprom;
4279 struct b43_phy *phy = &dev->phy;
4280 int err;
4281 u64 hf;
4282 u32 tmp;
4283
4284 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4285
4286 err = ssb_bus_powerup(bus, 0);
4287 if (err)
4288 goto out;
4289 if (!ssb_device_is_enabled(dev->dev)) {
4290 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4291 b43_wireless_core_reset(dev, tmp);
4292 }
4293
4294 /* Reset all data structures. */
4295 setup_struct_wldev_for_init(dev);
4296 phy->ops->prepare_structs(dev);
4297
4298 /* Enable IRQ routing to this device. */
4299 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4300
4301 b43_imcfglo_timeouts_workaround(dev);
4302 b43_bluetooth_coext_disable(dev);
4303 if (phy->ops->prepare_hardware) {
4304 err = phy->ops->prepare_hardware(dev);
4305 if (err)
4306 goto err_busdown;
4307 }
4308 err = b43_chip_init(dev);
4309 if (err)
4310 goto err_busdown;
4311 b43_shm_write16(dev, B43_SHM_SHARED,
4312 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4313 hf = b43_hf_read(dev);
4314 if (phy->type == B43_PHYTYPE_G) {
4315 hf |= B43_HF_SYMW;
4316 if (phy->rev == 1)
4317 hf |= B43_HF_GDCW;
4318 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4319 hf |= B43_HF_OFDMPABOOST;
4320 }
4321 if (phy->radio_ver == 0x2050) {
4322 if (phy->radio_rev == 6)
4323 hf |= B43_HF_4318TSSI;
4324 if (phy->radio_rev < 6)
4325 hf |= B43_HF_VCORECALC;
4326 }
4327 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4328 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4329 #ifdef CONFIG_SSB_DRIVER_PCICORE
4330 if ((bus->bustype == SSB_BUSTYPE_PCI) &&
4331 (bus->pcicore.dev->id.revision <= 10))
4332 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4333 #endif
4334 hf &= ~B43_HF_SKCFPUP;
4335 b43_hf_write(dev, hf);
4336
4337 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4338 B43_DEFAULT_LONG_RETRY_LIMIT);
4339 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4340 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4341
4342 /* Disable sending probe responses from firmware.
4343 * Setting the MaxTime to one usec will always trigger
4344 * a timeout, so we never send any probe resp.
4345 * A timeout of zero is infinite. */
4346 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4347
4348 b43_rate_memory_init(dev);
4349 b43_set_phytxctl_defaults(dev);
4350
4351 /* Minimum Contention Window */
4352 if (phy->type == B43_PHYTYPE_B) {
4353 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4354 } else {
4355 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4356 }
4357 /* Maximum Contention Window */
4358 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4359
4360 if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) ||
4361 (dev->dev->bus->bustype == SSB_BUSTYPE_SDIO) ||
4362 dev->use_pio) {
4363 dev->__using_pio_transfers = 1;
4364 err = b43_pio_init(dev);
4365 } else {
4366 dev->__using_pio_transfers = 0;
4367 err = b43_dma_init(dev);
4368 }
4369 if (err)
4370 goto err_chip_exit;
4371 b43_qos_init(dev);
4372 b43_set_synth_pu_delay(dev, 1);
4373 b43_bluetooth_coext_enable(dev);
4374
4375 ssb_bus_powerup(bus, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4376 b43_upload_card_macaddress(dev);
4377 b43_security_init(dev);
4378
4379 ieee80211_wake_queues(dev->wl->hw);
4380
4381 b43_set_status(dev, B43_STAT_INITIALIZED);
4382
4383 out:
4384 return err;
4385
4386 err_chip_exit:
4387 b43_chip_exit(dev);
4388 err_busdown:
4389 ssb_bus_may_powerdown(bus);
4390 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4391 return err;
4392 }
4393
4394 static int b43_op_add_interface(struct ieee80211_hw *hw,
4395 struct ieee80211_vif *vif)
4396 {
4397 struct b43_wl *wl = hw_to_b43_wl(hw);
4398 struct b43_wldev *dev;
4399 int err = -EOPNOTSUPP;
4400
4401 /* TODO: allow WDS/AP devices to coexist */
4402
4403 if (vif->type != NL80211_IFTYPE_AP &&
4404 vif->type != NL80211_IFTYPE_MESH_POINT &&
4405 vif->type != NL80211_IFTYPE_STATION &&
4406 vif->type != NL80211_IFTYPE_WDS &&
4407 vif->type != NL80211_IFTYPE_ADHOC)
4408 return -EOPNOTSUPP;
4409
4410 mutex_lock(&wl->mutex);
4411 if (wl->operating)
4412 goto out_mutex_unlock;
4413
4414 b43dbg(wl, "Adding Interface type %d\n", vif->type);
4415
4416 dev = wl->current_dev;
4417 wl->operating = 1;
4418 wl->vif = vif;
4419 wl->if_type = vif->type;
4420 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
4421
4422 b43_adjust_opmode(dev);
4423 b43_set_pretbtt(dev);
4424 b43_set_synth_pu_delay(dev, 0);
4425 b43_upload_card_macaddress(dev);
4426
4427 err = 0;
4428 out_mutex_unlock:
4429 mutex_unlock(&wl->mutex);
4430
4431 return err;
4432 }
4433
4434 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4435 struct ieee80211_vif *vif)
4436 {
4437 struct b43_wl *wl = hw_to_b43_wl(hw);
4438 struct b43_wldev *dev = wl->current_dev;
4439
4440 b43dbg(wl, "Removing Interface type %d\n", vif->type);
4441
4442 mutex_lock(&wl->mutex);
4443
4444 B43_WARN_ON(!wl->operating);
4445 B43_WARN_ON(wl->vif != vif);
4446 wl->vif = NULL;
4447
4448 wl->operating = 0;
4449
4450 b43_adjust_opmode(dev);
4451 memset(wl->mac_addr, 0, ETH_ALEN);
4452 b43_upload_card_macaddress(dev);
4453
4454 mutex_unlock(&wl->mutex);
4455 }
4456
4457 static int b43_op_start(struct ieee80211_hw *hw)
4458 {
4459 struct b43_wl *wl = hw_to_b43_wl(hw);
4460 struct b43_wldev *dev = wl->current_dev;
4461 int did_init = 0;
4462 int err = 0;
4463
4464 /* Kill all old instance specific information to make sure
4465 * the card won't use it in the short timeframe between start
4466 * and mac80211 reconfiguring it. */
4467 memset(wl->bssid, 0, ETH_ALEN);
4468 memset(wl->mac_addr, 0, ETH_ALEN);
4469 wl->filter_flags = 0;
4470 wl->radiotap_enabled = 0;
4471 b43_qos_clear(wl);
4472 wl->beacon0_uploaded = 0;
4473 wl->beacon1_uploaded = 0;
4474 wl->beacon_templates_virgin = 1;
4475 wl->radio_enabled = 1;
4476
4477 mutex_lock(&wl->mutex);
4478
4479 if (b43_status(dev) < B43_STAT_INITIALIZED) {
4480 err = b43_wireless_core_init(dev);
4481 if (err)
4482 goto out_mutex_unlock;
4483 did_init = 1;
4484 }
4485
4486 if (b43_status(dev) < B43_STAT_STARTED) {
4487 err = b43_wireless_core_start(dev);
4488 if (err) {
4489 if (did_init)
4490 b43_wireless_core_exit(dev);
4491 goto out_mutex_unlock;
4492 }
4493 }
4494
4495 /* XXX: only do if device doesn't support rfkill irq */
4496 wiphy_rfkill_start_polling(hw->wiphy);
4497
4498 out_mutex_unlock:
4499 mutex_unlock(&wl->mutex);
4500
4501 return err;
4502 }
4503
4504 static void b43_op_stop(struct ieee80211_hw *hw)
4505 {
4506 struct b43_wl *wl = hw_to_b43_wl(hw);
4507 struct b43_wldev *dev = wl->current_dev;
4508
4509 cancel_work_sync(&(wl->beacon_update_trigger));
4510
4511 mutex_lock(&wl->mutex);
4512 if (b43_status(dev) >= B43_STAT_STARTED) {
4513 dev = b43_wireless_core_stop(dev);
4514 if (!dev)
4515 goto out_unlock;
4516 }
4517 b43_wireless_core_exit(dev);
4518 wl->radio_enabled = 0;
4519
4520 out_unlock:
4521 mutex_unlock(&wl->mutex);
4522
4523 cancel_work_sync(&(wl->txpower_adjust_work));
4524 }
4525
4526 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4527 struct ieee80211_sta *sta, bool set)
4528 {
4529 struct b43_wl *wl = hw_to_b43_wl(hw);
4530
4531 /* FIXME: add locking */
4532 b43_update_templates(wl);
4533
4534 return 0;
4535 }
4536
4537 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4538 struct ieee80211_vif *vif,
4539 enum sta_notify_cmd notify_cmd,
4540 struct ieee80211_sta *sta)
4541 {
4542 struct b43_wl *wl = hw_to_b43_wl(hw);
4543
4544 B43_WARN_ON(!vif || wl->vif != vif);
4545 }
4546
4547 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4548 {
4549 struct b43_wl *wl = hw_to_b43_wl(hw);
4550 struct b43_wldev *dev;
4551
4552 mutex_lock(&wl->mutex);
4553 dev = wl->current_dev;
4554 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4555 /* Disable CFP update during scan on other channels. */
4556 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4557 }
4558 mutex_unlock(&wl->mutex);
4559 }
4560
4561 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4562 {
4563 struct b43_wl *wl = hw_to_b43_wl(hw);
4564 struct b43_wldev *dev;
4565
4566 mutex_lock(&wl->mutex);
4567 dev = wl->current_dev;
4568 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4569 /* Re-enable CFP update. */
4570 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4571 }
4572 mutex_unlock(&wl->mutex);
4573 }
4574
4575 static const struct ieee80211_ops b43_hw_ops = {
4576 .tx = b43_op_tx,
4577 .conf_tx = b43_op_conf_tx,
4578 .add_interface = b43_op_add_interface,
4579 .remove_interface = b43_op_remove_interface,
4580 .config = b43_op_config,
4581 .bss_info_changed = b43_op_bss_info_changed,
4582 .configure_filter = b43_op_configure_filter,
4583 .set_key = b43_op_set_key,
4584 .update_tkip_key = b43_op_update_tkip_key,
4585 .get_stats = b43_op_get_stats,
4586 .get_tsf = b43_op_get_tsf,
4587 .set_tsf = b43_op_set_tsf,
4588 .start = b43_op_start,
4589 .stop = b43_op_stop,
4590 .set_tim = b43_op_beacon_set_tim,
4591 .sta_notify = b43_op_sta_notify,
4592 .sw_scan_start = b43_op_sw_scan_start_notifier,
4593 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
4594 .rfkill_poll = b43_rfkill_poll,
4595 };
4596
4597 /* Hard-reset the chip. Do not call this directly.
4598 * Use b43_controller_restart()
4599 */
4600 static void b43_chip_reset(struct work_struct *work)
4601 {
4602 struct b43_wldev *dev =
4603 container_of(work, struct b43_wldev, restart_work);
4604 struct b43_wl *wl = dev->wl;
4605 int err = 0;
4606 int prev_status;
4607
4608 mutex_lock(&wl->mutex);
4609
4610 prev_status = b43_status(dev);
4611 /* Bring the device down... */
4612 if (prev_status >= B43_STAT_STARTED) {
4613 dev = b43_wireless_core_stop(dev);
4614 if (!dev) {
4615 err = -ENODEV;
4616 goto out;
4617 }
4618 }
4619 if (prev_status >= B43_STAT_INITIALIZED)
4620 b43_wireless_core_exit(dev);
4621
4622 /* ...and up again. */
4623 if (prev_status >= B43_STAT_INITIALIZED) {
4624 err = b43_wireless_core_init(dev);
4625 if (err)
4626 goto out;
4627 }
4628 if (prev_status >= B43_STAT_STARTED) {
4629 err = b43_wireless_core_start(dev);
4630 if (err) {
4631 b43_wireless_core_exit(dev);
4632 goto out;
4633 }
4634 }
4635 out:
4636 if (err)
4637 wl->current_dev = NULL; /* Failed to init the dev. */
4638 mutex_unlock(&wl->mutex);
4639 if (err)
4640 b43err(wl, "Controller restart FAILED\n");
4641 else
4642 b43info(wl, "Controller restarted\n");
4643 }
4644
4645 static int b43_setup_bands(struct b43_wldev *dev,
4646 bool have_2ghz_phy, bool have_5ghz_phy)
4647 {
4648 struct ieee80211_hw *hw = dev->wl->hw;
4649
4650 if (have_2ghz_phy)
4651 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4652 if (dev->phy.type == B43_PHYTYPE_N) {
4653 if (have_5ghz_phy)
4654 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4655 } else {
4656 if (have_5ghz_phy)
4657 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4658 }
4659
4660 dev->phy.supports_2ghz = have_2ghz_phy;
4661 dev->phy.supports_5ghz = have_5ghz_phy;
4662
4663 return 0;
4664 }
4665
4666 static void b43_wireless_core_detach(struct b43_wldev *dev)
4667 {
4668 /* We release firmware that late to not be required to re-request
4669 * is all the time when we reinit the core. */
4670 b43_release_firmware(dev);
4671 b43_phy_free(dev);
4672 }
4673
4674 static int b43_wireless_core_attach(struct b43_wldev *dev)
4675 {
4676 struct b43_wl *wl = dev->wl;
4677 struct ssb_bus *bus = dev->dev->bus;
4678 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
4679 int err;
4680 bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4681 u32 tmp;
4682
4683 /* Do NOT do any device initialization here.
4684 * Do it in wireless_core_init() instead.
4685 * This function is for gathering basic information about the HW, only.
4686 * Also some structs may be set up here. But most likely you want to have
4687 * that in core_init(), too.
4688 */
4689
4690 err = ssb_bus_powerup(bus, 0);
4691 if (err) {
4692 b43err(wl, "Bus powerup failed\n");
4693 goto out;
4694 }
4695 /* Get the PHY type. */
4696 if (dev->dev->id.revision >= 5) {
4697 u32 tmshigh;
4698
4699 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4700 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4701 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4702 } else
4703 B43_WARN_ON(1);
4704
4705 dev->phy.gmode = have_2ghz_phy;
4706 dev->phy.radio_on = 1;
4707 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4708 b43_wireless_core_reset(dev, tmp);
4709
4710 err = b43_phy_versioning(dev);
4711 if (err)
4712 goto err_powerdown;
4713 /* Check if this device supports multiband. */
4714 if (!pdev ||
4715 (pdev->device != 0x4312 &&
4716 pdev->device != 0x4319 && pdev->device != 0x4324)) {
4717 /* No multiband support. */
4718 have_2ghz_phy = 0;
4719 have_5ghz_phy = 0;
4720 switch (dev->phy.type) {
4721 case B43_PHYTYPE_A:
4722 have_5ghz_phy = 1;
4723 break;
4724 case B43_PHYTYPE_LP: //FIXME not always!
4725 #if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
4726 have_5ghz_phy = 1;
4727 #endif
4728 case B43_PHYTYPE_G:
4729 case B43_PHYTYPE_N:
4730 have_2ghz_phy = 1;
4731 break;
4732 default:
4733 B43_WARN_ON(1);
4734 }
4735 }
4736 if (dev->phy.type == B43_PHYTYPE_A) {
4737 /* FIXME */
4738 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4739 err = -EOPNOTSUPP;
4740 goto err_powerdown;
4741 }
4742 if (1 /* disable A-PHY */) {
4743 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4744 if (dev->phy.type != B43_PHYTYPE_N &&
4745 dev->phy.type != B43_PHYTYPE_LP) {
4746 have_2ghz_phy = 1;
4747 have_5ghz_phy = 0;
4748 }
4749 }
4750
4751 err = b43_phy_allocate(dev);
4752 if (err)
4753 goto err_powerdown;
4754
4755 dev->phy.gmode = have_2ghz_phy;
4756 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4757 b43_wireless_core_reset(dev, tmp);
4758
4759 err = b43_validate_chipaccess(dev);
4760 if (err)
4761 goto err_phy_free;
4762 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4763 if (err)
4764 goto err_phy_free;
4765
4766 /* Now set some default "current_dev" */
4767 if (!wl->current_dev)
4768 wl->current_dev = dev;
4769 INIT_WORK(&dev->restart_work, b43_chip_reset);
4770
4771 dev->phy.ops->switch_analog(dev, 0);
4772 ssb_device_disable(dev->dev, 0);
4773 ssb_bus_may_powerdown(bus);
4774
4775 out:
4776 return err;
4777
4778 err_phy_free:
4779 b43_phy_free(dev);
4780 err_powerdown:
4781 ssb_bus_may_powerdown(bus);
4782 return err;
4783 }
4784
4785 static void b43_one_core_detach(struct ssb_device *dev)
4786 {
4787 struct b43_wldev *wldev;
4788 struct b43_wl *wl;
4789
4790 /* Do not cancel ieee80211-workqueue based work here.
4791 * See comment in b43_remove(). */
4792
4793 wldev = ssb_get_drvdata(dev);
4794 wl = wldev->wl;
4795 b43_debugfs_remove_device(wldev);
4796 b43_wireless_core_detach(wldev);
4797 list_del(&wldev->list);
4798 wl->nr_devs--;
4799 ssb_set_drvdata(dev, NULL);
4800 kfree(wldev);
4801 }
4802
4803 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4804 {
4805 struct b43_wldev *wldev;
4806 struct pci_dev *pdev;
4807 int err = -ENOMEM;
4808
4809 if (!list_empty(&wl->devlist)) {
4810 /* We are not the first core on this chip. */
4811 pdev = (dev->bus->bustype == SSB_BUSTYPE_PCI) ? dev->bus->host_pci : NULL;
4812 /* Only special chips support more than one wireless
4813 * core, although some of the other chips have more than
4814 * one wireless core as well. Check for this and
4815 * bail out early.
4816 */
4817 if (!pdev ||
4818 ((pdev->device != 0x4321) &&
4819 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4820 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4821 return -ENODEV;
4822 }
4823 }
4824
4825 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4826 if (!wldev)
4827 goto out;
4828
4829 wldev->use_pio = b43_modparam_pio;
4830 wldev->dev = dev;
4831 wldev->wl = wl;
4832 b43_set_status(wldev, B43_STAT_UNINIT);
4833 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4834 INIT_LIST_HEAD(&wldev->list);
4835
4836 err = b43_wireless_core_attach(wldev);
4837 if (err)
4838 goto err_kfree_wldev;
4839
4840 list_add(&wldev->list, &wl->devlist);
4841 wl->nr_devs++;
4842 ssb_set_drvdata(dev, wldev);
4843 b43_debugfs_add_device(wldev);
4844
4845 out:
4846 return err;
4847
4848 err_kfree_wldev:
4849 kfree(wldev);
4850 return err;
4851 }
4852
4853 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
4854 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
4855 (pdev->device == _device) && \
4856 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
4857 (pdev->subsystem_device == _subdevice) )
4858
4859 static void b43_sprom_fixup(struct ssb_bus *bus)
4860 {
4861 struct pci_dev *pdev;
4862
4863 /* boardflags workarounds */
4864 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4865 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4866 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4867 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4868 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4869 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4870 if (bus->bustype == SSB_BUSTYPE_PCI) {
4871 pdev = bus->host_pci;
4872 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4873 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
4874 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
4875 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4876 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4877 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4878 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4879 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4880 }
4881 }
4882
4883 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4884 {
4885 struct ieee80211_hw *hw = wl->hw;
4886
4887 ssb_set_devtypedata(dev, NULL);
4888 ieee80211_free_hw(hw);
4889 }
4890
4891 static int b43_wireless_init(struct ssb_device *dev)
4892 {
4893 struct ssb_sprom *sprom = &dev->bus->sprom;
4894 struct ieee80211_hw *hw;
4895 struct b43_wl *wl;
4896 int err = -ENOMEM;
4897
4898 b43_sprom_fixup(dev->bus);
4899
4900 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4901 if (!hw) {
4902 b43err(NULL, "Could not allocate ieee80211 device\n");
4903 goto out;
4904 }
4905 wl = hw_to_b43_wl(hw);
4906
4907 /* fill hw info */
4908 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4909 IEEE80211_HW_SIGNAL_DBM |
4910 IEEE80211_HW_NOISE_DBM;
4911
4912 hw->wiphy->interface_modes =
4913 BIT(NL80211_IFTYPE_AP) |
4914 BIT(NL80211_IFTYPE_MESH_POINT) |
4915 BIT(NL80211_IFTYPE_STATION) |
4916 BIT(NL80211_IFTYPE_WDS) |
4917 BIT(NL80211_IFTYPE_ADHOC);
4918
4919 hw->queues = modparam_qos ? 4 : 1;
4920 wl->mac80211_initially_registered_queues = hw->queues;
4921 hw->max_rates = 2;
4922 SET_IEEE80211_DEV(hw, dev->dev);
4923 if (is_valid_ether_addr(sprom->et1mac))
4924 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4925 else
4926 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4927
4928 /* Initialize struct b43_wl */
4929 wl->hw = hw;
4930 mutex_init(&wl->mutex);
4931 spin_lock_init(&wl->hardirq_lock);
4932 INIT_LIST_HEAD(&wl->devlist);
4933 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4934 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4935 INIT_WORK(&wl->tx_work, b43_tx_work);
4936 skb_queue_head_init(&wl->tx_queue);
4937
4938 ssb_set_devtypedata(dev, wl);
4939 b43info(wl, "Broadcom %04X WLAN found (core revision %u)\n",
4940 dev->bus->chip_id, dev->id.revision);
4941 err = 0;
4942 out:
4943 return err;
4944 }
4945
4946 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4947 {
4948 struct b43_wl *wl;
4949 int err;
4950 int first = 0;
4951
4952 wl = ssb_get_devtypedata(dev);
4953 if (!wl) {
4954 /* Probing the first core. Must setup common struct b43_wl */
4955 first = 1;
4956 err = b43_wireless_init(dev);
4957 if (err)
4958 goto out;
4959 wl = ssb_get_devtypedata(dev);
4960 B43_WARN_ON(!wl);
4961 }
4962 err = b43_one_core_attach(dev, wl);
4963 if (err)
4964 goto err_wireless_exit;
4965
4966 if (first) {
4967 err = ieee80211_register_hw(wl->hw);
4968 if (err)
4969 goto err_one_core_detach;
4970 b43_leds_register(wl->current_dev);
4971 b43_rng_init(wl);
4972 }
4973
4974 out:
4975 return err;
4976
4977 err_one_core_detach:
4978 b43_one_core_detach(dev);
4979 err_wireless_exit:
4980 if (first)
4981 b43_wireless_exit(dev, wl);
4982 return err;
4983 }
4984
4985 static void b43_remove(struct ssb_device *dev)
4986 {
4987 struct b43_wl *wl = ssb_get_devtypedata(dev);
4988 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4989
4990 /* We must cancel any work here before unregistering from ieee80211,
4991 * as the ieee80211 unreg will destroy the workqueue. */
4992 cancel_work_sync(&wldev->restart_work);
4993
4994 B43_WARN_ON(!wl);
4995 if (wl->current_dev == wldev) {
4996 /* Restore the queues count before unregistering, because firmware detect
4997 * might have modified it. Restoring is important, so the networking
4998 * stack can properly free resources. */
4999 wl->hw->queues = wl->mac80211_initially_registered_queues;
5000 b43_leds_stop(wldev);
5001 ieee80211_unregister_hw(wl->hw);
5002 }
5003
5004 b43_one_core_detach(dev);
5005
5006 if (list_empty(&wl->devlist)) {
5007 b43_rng_exit(wl);
5008 b43_leds_unregister(wl);
5009 /* Last core on the chip unregistered.
5010 * We can destroy common struct b43_wl.
5011 */
5012 b43_wireless_exit(dev, wl);
5013 }
5014 }
5015
5016 /* Perform a hardware reset. This can be called from any context. */
5017 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5018 {
5019 /* Must avoid requeueing, if we are in shutdown. */
5020 if (b43_status(dev) < B43_STAT_INITIALIZED)
5021 return;
5022 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5023 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5024 }
5025
5026 static struct ssb_driver b43_ssb_driver = {
5027 .name = KBUILD_MODNAME,
5028 .id_table = b43_ssb_tbl,
5029 .probe = b43_probe,
5030 .remove = b43_remove,
5031 };
5032
5033 static void b43_print_driverinfo(void)
5034 {
5035 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5036 *feat_leds = "", *feat_sdio = "";
5037
5038 #ifdef CONFIG_B43_PCI_AUTOSELECT
5039 feat_pci = "P";
5040 #endif
5041 #ifdef CONFIG_B43_PCMCIA
5042 feat_pcmcia = "M";
5043 #endif
5044 #ifdef CONFIG_B43_NPHY
5045 feat_nphy = "N";
5046 #endif
5047 #ifdef CONFIG_B43_LEDS
5048 feat_leds = "L";
5049 #endif
5050 #ifdef CONFIG_B43_SDIO
5051 feat_sdio = "S";
5052 #endif
5053 printk(KERN_INFO "Broadcom 43xx driver loaded "
5054 "[ Features: %s%s%s%s%s, Firmware-ID: "
5055 B43_SUPPORTED_FIRMWARE_ID " ]\n",
5056 feat_pci, feat_pcmcia, feat_nphy,
5057 feat_leds, feat_sdio);
5058 }
5059
5060 static int __init b43_init(void)
5061 {
5062 int err;
5063
5064 b43_debugfs_init();
5065 err = b43_pcmcia_init();
5066 if (err)
5067 goto err_dfs_exit;
5068 err = b43_sdio_init();
5069 if (err)
5070 goto err_pcmcia_exit;
5071 err = ssb_driver_register(&b43_ssb_driver);
5072 if (err)
5073 goto err_sdio_exit;
5074 b43_print_driverinfo();
5075
5076 return err;
5077
5078 err_sdio_exit:
5079 b43_sdio_exit();
5080 err_pcmcia_exit:
5081 b43_pcmcia_exit();
5082 err_dfs_exit:
5083 b43_debugfs_exit();
5084 return err;
5085 }
5086
5087 static void __exit b43_exit(void)
5088 {
5089 ssb_driver_unregister(&b43_ssb_driver);
5090 b43_sdio_exit();
5091 b43_pcmcia_exit();
5092 b43_debugfs_exit();
5093 }
5094
5095 module_init(b43_init)
5096 module_exit(b43_exit)
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