1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3
4 Broadcom B43 wireless driver
5
6 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
7 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
8 Copyright (c) 2005-2009 Michael Buesch <m@bues.ch>
9 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
10 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
11 Copyright (c) 2010-2011 Rafał Miłecki <zajec5@gmail.com>
12
13 SDIO support
14 Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
15
16 Some parts of the code in this file are derived from the ipw2200
17 driver Copyright(c) 2003 - 2004 Intel Corporation.
18
19
20 */
21
22 #include <linux/delay.h>
23 #include <linux/init.h>
24 #include <linux/module.h>
25 #include <linux/if_arp.h>
26 #include <linux/etherdevice.h>
27 #include <linux/firmware.h>
28 #include <linux/workqueue.h>
29 #include <linux/skbuff.h>
30 #include <linux/io.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/slab.h>
33 #include <asm/unaligned.h>
34
35 #include "b43.h"
36 #include "main.h"
37 #include "debugfs.h"
38 #include "phy_common.h"
39 #include "phy_g.h"
40 #include "phy_n.h"
41 #include "dma.h"
42 #include "pio.h"
43 #include "sysfs.h"
44 #include "xmit.h"
45 #include "lo.h"
46 #include "sdio.h"
47 #include <linux/mmc/sdio_func.h>
48
49 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
50 MODULE_AUTHOR("Martin Langer");
51 MODULE_AUTHOR("Stefano Brivio");
52 MODULE_AUTHOR("Michael Buesch");
53 MODULE_AUTHOR("Gábor Stefanik");
54 MODULE_AUTHOR("Rafał Miłecki");
55 MODULE_LICENSE("GPL");
56
57 MODULE_FIRMWARE("b43/ucode11.fw");
58 MODULE_FIRMWARE("b43/ucode13.fw");
59 MODULE_FIRMWARE("b43/ucode14.fw");
60 MODULE_FIRMWARE("b43/ucode15.fw");
61 MODULE_FIRMWARE("b43/ucode16_lp.fw");
62 MODULE_FIRMWARE("b43/ucode16_mimo.fw");
63 MODULE_FIRMWARE("b43/ucode24_lcn.fw");
64 MODULE_FIRMWARE("b43/ucode25_lcn.fw");
65 MODULE_FIRMWARE("b43/ucode25_mimo.fw");
66 MODULE_FIRMWARE("b43/ucode26_mimo.fw");
67 MODULE_FIRMWARE("b43/ucode29_mimo.fw");
68 MODULE_FIRMWARE("b43/ucode33_lcn40.fw");
69 MODULE_FIRMWARE("b43/ucode30_mimo.fw");
70 MODULE_FIRMWARE("b43/ucode5.fw");
71 MODULE_FIRMWARE("b43/ucode40.fw");
72 MODULE_FIRMWARE("b43/ucode42.fw");
73 MODULE_FIRMWARE("b43/ucode9.fw");
74
75 static int modparam_bad_frames_preempt;
76 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
77 MODULE_PARM_DESC(bad_frames_preempt,
78 "enable(1) / disable(0) Bad Frames Preemption");
79
80 static char modparam_fwpostfix[16];
81 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
82 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
83
84 static int modparam_hwpctl;
85 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
86 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
87
88 static int modparam_nohwcrypt;
89 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
90 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
91
92 static int modparam_hwtkip;
93 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
94 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
95
96 static int modparam_qos = 1;
97 module_param_named(qos, modparam_qos, int, 0444);
98 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
99
100 static int modparam_btcoex = 1;
101 module_param_named(btcoex, modparam_btcoex, int, 0444);
102 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
103
104 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
105 module_param_named(verbose, b43_modparam_verbose, int, 0644);
106 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
107
108 static int b43_modparam_pio;
109 module_param_named(pio, b43_modparam_pio, int, 0644);
110 MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
111
112 static int modparam_allhwsupport = !IS_ENABLED(CONFIG_BRCMSMAC);
113 module_param_named(allhwsupport, modparam_allhwsupport, int, 0444);
114 MODULE_PARM_DESC(allhwsupport, "Enable support for all hardware (even it if overlaps with the brcmsmac driver)");
115
116 #ifdef CONFIG_B43_BCMA
117 static const struct bcma_device_id b43_bcma_tbl[] = {
118 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x11, BCMA_ANY_CLASS),
119 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x15, BCMA_ANY_CLASS),
120 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x17, BCMA_ANY_CLASS),
121 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x18, BCMA_ANY_CLASS),
122 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1C, BCMA_ANY_CLASS),
123 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1D, BCMA_ANY_CLASS),
124 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1E, BCMA_ANY_CLASS),
125 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x28, BCMA_ANY_CLASS),
126 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x2A, BCMA_ANY_CLASS),
127 {},
128 };
129 MODULE_DEVICE_TABLE(bcma, b43_bcma_tbl);
130 #endif
131
132 #ifdef CONFIG_B43_SSB
133 static const struct ssb_device_id b43_ssb_tbl[] = {
134 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
135 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
136 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
137 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
138 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
139 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
140 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
141 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
142 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
143 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
144 {},
145 };
146 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
147 #endif
148
149 /* Channel and ratetables are shared for all devices.
150 * They can't be const, because ieee80211 puts some precalculated
151 * data in there. This data is the same for all devices, so we don't
152 * get concurrency issues */
153 #define RATETAB_ENT(_rateid, _flags) \
154 { \
155 .bitrate = B43_RATE_TO_BASE100KBPS(_rateid), \
156 .hw_value = (_rateid), \
157 .flags = (_flags), \
158 }
159
160 /*
161 * NOTE: When changing this, sync with xmit.c's
162 * b43_plcp_get_bitrate_idx_* functions!
163 */
164 static struct ieee80211_rate __b43_ratetable[] = {
165 RATETAB_ENT(B43_CCK_RATE_1MB, 0),
166 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
167 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
168 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
169 RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
170 RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
171 RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
172 RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
173 RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
174 RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
175 RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
176 RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
177 };
178
179 #define b43_a_ratetable (__b43_ratetable + 4)
180 #define b43_a_ratetable_size 8
181 #define b43_b_ratetable (__b43_ratetable + 0)
182 #define b43_b_ratetable_size 4
183 #define b43_g_ratetable (__b43_ratetable + 0)
184 #define b43_g_ratetable_size 12
185
186 #define CHAN2G(_channel, _freq, _flags) { \
187 .band = NL80211_BAND_2GHZ, \
188 .center_freq = (_freq), \
189 .hw_value = (_channel), \
190 .flags = (_flags), \
191 .max_antenna_gain = 0, \
192 .max_power = 30, \
193 }
194 static struct ieee80211_channel b43_2ghz_chantable[] = {
195 CHAN2G(1, 2412, 0),
196 CHAN2G(2, 2417, 0),
197 CHAN2G(3, 2422, 0),
198 CHAN2G(4, 2427, 0),
199 CHAN2G(5, 2432, 0),
200 CHAN2G(6, 2437, 0),
201 CHAN2G(7, 2442, 0),
202 CHAN2G(8, 2447, 0),
203 CHAN2G(9, 2452, 0),
204 CHAN2G(10, 2457, 0),
205 CHAN2G(11, 2462, 0),
206 CHAN2G(12, 2467, 0),
207 CHAN2G(13, 2472, 0),
208 CHAN2G(14, 2484, 0),
209 };
210
211 /* No support for the last 3 channels (12, 13, 14) */
212 #define b43_2ghz_chantable_limited_size 11
213 #undef CHAN2G
214
215 #define CHAN4G(_channel, _flags) { \
216 .band = NL80211_BAND_5GHZ, \
217 .center_freq = 4000 + (5 * (_channel)), \
218 .hw_value = (_channel), \
219 .flags = (_flags), \
220 .max_antenna_gain = 0, \
221 .max_power = 30, \
222 }
223 #define CHAN5G(_channel, _flags) { \
224 .band = NL80211_BAND_5GHZ, \
225 .center_freq = 5000 + (5 * (_channel)), \
226 .hw_value = (_channel), \
227 .flags = (_flags), \
228 .max_antenna_gain = 0, \
229 .max_power = 30, \
230 }
231 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
232 CHAN4G(184, 0), CHAN4G(186, 0),
233 CHAN4G(188, 0), CHAN4G(190, 0),
234 CHAN4G(192, 0), CHAN4G(194, 0),
235 CHAN4G(196, 0), CHAN4G(198, 0),
236 CHAN4G(200, 0), CHAN4G(202, 0),
237 CHAN4G(204, 0), CHAN4G(206, 0),
238 CHAN4G(208, 0), CHAN4G(210, 0),
239 CHAN4G(212, 0), CHAN4G(214, 0),
240 CHAN4G(216, 0), CHAN4G(218, 0),
241 CHAN4G(220, 0), CHAN4G(222, 0),
242 CHAN4G(224, 0), CHAN4G(226, 0),
243 CHAN4G(228, 0),
244 CHAN5G(32, 0), CHAN5G(34, 0),
245 CHAN5G(36, 0), CHAN5G(38, 0),
246 CHAN5G(40, 0), CHAN5G(42, 0),
247 CHAN5G(44, 0), CHAN5G(46, 0),
248 CHAN5G(48, 0), CHAN5G(50, 0),
249 CHAN5G(52, 0), CHAN5G(54, 0),
250 CHAN5G(56, 0), CHAN5G(58, 0),
251 CHAN5G(60, 0), CHAN5G(62, 0),
252 CHAN5G(64, 0), CHAN5G(66, 0),
253 CHAN5G(68, 0), CHAN5G(70, 0),
254 CHAN5G(72, 0), CHAN5G(74, 0),
255 CHAN5G(76, 0), CHAN5G(78, 0),
256 CHAN5G(80, 0), CHAN5G(82, 0),
257 CHAN5G(84, 0), CHAN5G(86, 0),
258 CHAN5G(88, 0), CHAN5G(90, 0),
259 CHAN5G(92, 0), CHAN5G(94, 0),
260 CHAN5G(96, 0), CHAN5G(98, 0),
261 CHAN5G(100, 0), CHAN5G(102, 0),
262 CHAN5G(104, 0), CHAN5G(106, 0),
263 CHAN5G(108, 0), CHAN5G(110, 0),
264 CHAN5G(112, 0), CHAN5G(114, 0),
265 CHAN5G(116, 0), CHAN5G(118, 0),
266 CHAN5G(120, 0), CHAN5G(122, 0),
267 CHAN5G(124, 0), CHAN5G(126, 0),
268 CHAN5G(128, 0), CHAN5G(130, 0),
269 CHAN5G(132, 0), CHAN5G(134, 0),
270 CHAN5G(136, 0), CHAN5G(138, 0),
271 CHAN5G(140, 0), CHAN5G(142, 0),
272 CHAN5G(144, 0), CHAN5G(145, 0),
273 CHAN5G(146, 0), CHAN5G(147, 0),
274 CHAN5G(148, 0), CHAN5G(149, 0),
275 CHAN5G(150, 0), CHAN5G(151, 0),
276 CHAN5G(152, 0), CHAN5G(153, 0),
277 CHAN5G(154, 0), CHAN5G(155, 0),
278 CHAN5G(156, 0), CHAN5G(157, 0),
279 CHAN5G(158, 0), CHAN5G(159, 0),
280 CHAN5G(160, 0), CHAN5G(161, 0),
281 CHAN5G(162, 0), CHAN5G(163, 0),
282 CHAN5G(164, 0), CHAN5G(165, 0),
283 CHAN5G(166, 0), CHAN5G(168, 0),
284 CHAN5G(170, 0), CHAN5G(172, 0),
285 CHAN5G(174, 0), CHAN5G(176, 0),
286 CHAN5G(178, 0), CHAN5G(180, 0),
287 CHAN5G(182, 0),
288 };
289
290 static struct ieee80211_channel b43_5ghz_nphy_chantable_limited[] = {
291 CHAN5G(36, 0), CHAN5G(40, 0),
292 CHAN5G(44, 0), CHAN5G(48, 0),
293 CHAN5G(149, 0), CHAN5G(153, 0),
294 CHAN5G(157, 0), CHAN5G(161, 0),
295 CHAN5G(165, 0),
296 };
297
298 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
299 CHAN5G(34, 0), CHAN5G(36, 0),
300 CHAN5G(38, 0), CHAN5G(40, 0),
301 CHAN5G(42, 0), CHAN5G(44, 0),
302 CHAN5G(46, 0), CHAN5G(48, 0),
303 CHAN5G(52, 0), CHAN5G(56, 0),
304 CHAN5G(60, 0), CHAN5G(64, 0),
305 CHAN5G(100, 0), CHAN5G(104, 0),
306 CHAN5G(108, 0), CHAN5G(112, 0),
307 CHAN5G(116, 0), CHAN5G(120, 0),
308 CHAN5G(124, 0), CHAN5G(128, 0),
309 CHAN5G(132, 0), CHAN5G(136, 0),
310 CHAN5G(140, 0), CHAN5G(149, 0),
311 CHAN5G(153, 0), CHAN5G(157, 0),
312 CHAN5G(161, 0), CHAN5G(165, 0),
313 CHAN5G(184, 0), CHAN5G(188, 0),
314 CHAN5G(192, 0), CHAN5G(196, 0),
315 CHAN5G(200, 0), CHAN5G(204, 0),
316 CHAN5G(208, 0), CHAN5G(212, 0),
317 CHAN5G(216, 0),
318 };
319 #undef CHAN4G
320 #undef CHAN5G
321
322 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
323 .band = NL80211_BAND_5GHZ,
324 .channels = b43_5ghz_nphy_chantable,
325 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable),
326 .bitrates = b43_a_ratetable,
327 .n_bitrates = b43_a_ratetable_size,
328 };
329
330 static struct ieee80211_supported_band b43_band_5GHz_nphy_limited = {
331 .band = NL80211_BAND_5GHZ,
332 .channels = b43_5ghz_nphy_chantable_limited,
333 .n_channels = ARRAY_SIZE(b43_5ghz_nphy_chantable_limited),
334 .bitrates = b43_a_ratetable,
335 .n_bitrates = b43_a_ratetable_size,
336 };
337
338 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
339 .band = NL80211_BAND_5GHZ,
340 .channels = b43_5ghz_aphy_chantable,
341 .n_channels = ARRAY_SIZE(b43_5ghz_aphy_chantable),
342 .bitrates = b43_a_ratetable,
343 .n_bitrates = b43_a_ratetable_size,
344 };
345
346 static struct ieee80211_supported_band b43_band_2GHz = {
347 .band = NL80211_BAND_2GHZ,
348 .channels = b43_2ghz_chantable,
349 .n_channels = ARRAY_SIZE(b43_2ghz_chantable),
350 .bitrates = b43_g_ratetable,
351 .n_bitrates = b43_g_ratetable_size,
352 };
353
354 static struct ieee80211_supported_band b43_band_2ghz_limited = {
355 .band = NL80211_BAND_2GHZ,
356 .channels = b43_2ghz_chantable,
357 .n_channels = b43_2ghz_chantable_limited_size,
358 .bitrates = b43_g_ratetable,
359 .n_bitrates = b43_g_ratetable_size,
360 };
361
362 static void b43_wireless_core_exit(struct b43_wldev *dev);
363 static int b43_wireless_core_init(struct b43_wldev *dev);
364 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
365 static int b43_wireless_core_start(struct b43_wldev *dev);
366 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
367 struct ieee80211_vif *vif,
368 struct ieee80211_bss_conf *conf,
369 u64 changed);
370
b43_ratelimit(struct b43_wl * wl)371 static int b43_ratelimit(struct b43_wl *wl)
372 {
373 if (!wl || !wl->current_dev)
374 return 1;
375 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
376 return 1;
377 /* We are up and running.
378 * Ratelimit the messages to avoid DoS over the net. */
379 return net_ratelimit();
380 }
381
b43info(struct b43_wl * wl,const char * fmt,...)382 void b43info(struct b43_wl *wl, const char *fmt, ...)
383 {
384 struct va_format vaf;
385 va_list args;
386
387 if (b43_modparam_verbose < B43_VERBOSITY_INFO)
388 return;
389 if (!b43_ratelimit(wl))
390 return;
391
392 va_start(args, fmt);
393
394 vaf.fmt = fmt;
395 vaf.va = &args;
396
397 printk(KERN_INFO "b43-%s: %pV",
398 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
399
400 va_end(args);
401 }
402
b43err(struct b43_wl * wl,const char * fmt,...)403 void b43err(struct b43_wl *wl, const char *fmt, ...)
404 {
405 struct va_format vaf;
406 va_list args;
407
408 if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
409 return;
410 if (!b43_ratelimit(wl))
411 return;
412
413 va_start(args, fmt);
414
415 vaf.fmt = fmt;
416 vaf.va = &args;
417
418 printk(KERN_ERR "b43-%s ERROR: %pV",
419 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
420
421 va_end(args);
422 }
423
b43warn(struct b43_wl * wl,const char * fmt,...)424 void b43warn(struct b43_wl *wl, const char *fmt, ...)
425 {
426 struct va_format vaf;
427 va_list args;
428
429 if (b43_modparam_verbose < B43_VERBOSITY_WARN)
430 return;
431 if (!b43_ratelimit(wl))
432 return;
433
434 va_start(args, fmt);
435
436 vaf.fmt = fmt;
437 vaf.va = &args;
438
439 printk(KERN_WARNING "b43-%s warning: %pV",
440 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
441
442 va_end(args);
443 }
444
b43dbg(struct b43_wl * wl,const char * fmt,...)445 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
446 {
447 struct va_format vaf;
448 va_list args;
449
450 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
451 return;
452
453 va_start(args, fmt);
454
455 vaf.fmt = fmt;
456 vaf.va = &args;
457
458 printk(KERN_DEBUG "b43-%s debug: %pV",
459 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
460
461 va_end(args);
462 }
463
b43_ram_write(struct b43_wldev * dev,u16 offset,u32 val)464 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
465 {
466 u32 macctl;
467
468 B43_WARN_ON(offset % 4 != 0);
469
470 macctl = b43_read32(dev, B43_MMIO_MACCTL);
471 if (macctl & B43_MACCTL_BE)
472 val = swab32(val);
473
474 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
475 b43_write32(dev, B43_MMIO_RAM_DATA, val);
476 }
477
b43_shm_control_word(struct b43_wldev * dev,u16 routing,u16 offset)478 static inline void b43_shm_control_word(struct b43_wldev *dev,
479 u16 routing, u16 offset)
480 {
481 u32 control;
482
483 /* "offset" is the WORD offset. */
484 control = routing;
485 control <<= 16;
486 control |= offset;
487 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
488 }
489
b43_shm_read32(struct b43_wldev * dev,u16 routing,u16 offset)490 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
491 {
492 u32 ret;
493
494 if (routing == B43_SHM_SHARED) {
495 B43_WARN_ON(offset & 0x0001);
496 if (offset & 0x0003) {
497 /* Unaligned access */
498 b43_shm_control_word(dev, routing, offset >> 2);
499 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
500 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
501 ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
502
503 goto out;
504 }
505 offset >>= 2;
506 }
507 b43_shm_control_word(dev, routing, offset);
508 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
509 out:
510 return ret;
511 }
512
b43_shm_read16(struct b43_wldev * dev,u16 routing,u16 offset)513 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
514 {
515 u16 ret;
516
517 if (routing == B43_SHM_SHARED) {
518 B43_WARN_ON(offset & 0x0001);
519 if (offset & 0x0003) {
520 /* Unaligned access */
521 b43_shm_control_word(dev, routing, offset >> 2);
522 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
523
524 goto out;
525 }
526 offset >>= 2;
527 }
528 b43_shm_control_word(dev, routing, offset);
529 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
530 out:
531 return ret;
532 }
533
b43_shm_write32(struct b43_wldev * dev,u16 routing,u16 offset,u32 value)534 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
535 {
536 if (routing == B43_SHM_SHARED) {
537 B43_WARN_ON(offset & 0x0001);
538 if (offset & 0x0003) {
539 /* Unaligned access */
540 b43_shm_control_word(dev, routing, offset >> 2);
541 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
542 value & 0xFFFF);
543 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
544 b43_write16(dev, B43_MMIO_SHM_DATA,
545 (value >> 16) & 0xFFFF);
546 return;
547 }
548 offset >>= 2;
549 }
550 b43_shm_control_word(dev, routing, offset);
551 b43_write32(dev, B43_MMIO_SHM_DATA, value);
552 }
553
b43_shm_write16(struct b43_wldev * dev,u16 routing,u16 offset,u16 value)554 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
555 {
556 if (routing == B43_SHM_SHARED) {
557 B43_WARN_ON(offset & 0x0001);
558 if (offset & 0x0003) {
559 /* Unaligned access */
560 b43_shm_control_word(dev, routing, offset >> 2);
561 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
562 return;
563 }
564 offset >>= 2;
565 }
566 b43_shm_control_word(dev, routing, offset);
567 b43_write16(dev, B43_MMIO_SHM_DATA, value);
568 }
569
570 /* Read HostFlags */
b43_hf_read(struct b43_wldev * dev)571 u64 b43_hf_read(struct b43_wldev *dev)
572 {
573 u64 ret;
574
575 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3);
576 ret <<= 16;
577 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2);
578 ret <<= 16;
579 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1);
580
581 return ret;
582 }
583
584 /* Write HostFlags */
b43_hf_write(struct b43_wldev * dev,u64 value)585 void b43_hf_write(struct b43_wldev *dev, u64 value)
586 {
587 u16 lo, mi, hi;
588
589 lo = (value & 0x00000000FFFFULL);
590 mi = (value & 0x0000FFFF0000ULL) >> 16;
591 hi = (value & 0xFFFF00000000ULL) >> 32;
592 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1, lo);
593 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2, mi);
594 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3, hi);
595 }
596
597 /* Read the firmware capabilities bitmask (Opensource firmware only) */
b43_fwcapa_read(struct b43_wldev * dev)598 static u16 b43_fwcapa_read(struct b43_wldev *dev)
599 {
600 B43_WARN_ON(!dev->fw.opensource);
601 return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
602 }
603
b43_tsf_read(struct b43_wldev * dev,u64 * tsf)604 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
605 {
606 u32 low, high;
607
608 B43_WARN_ON(dev->dev->core_rev < 3);
609
610 /* The hardware guarantees us an atomic read, if we
611 * read the low register first. */
612 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
613 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
614
615 *tsf = high;
616 *tsf <<= 32;
617 *tsf |= low;
618 }
619
b43_time_lock(struct b43_wldev * dev)620 static void b43_time_lock(struct b43_wldev *dev)
621 {
622 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_TBTTHOLD);
623 /* Commit the write */
624 b43_read32(dev, B43_MMIO_MACCTL);
625 }
626
b43_time_unlock(struct b43_wldev * dev)627 static void b43_time_unlock(struct b43_wldev *dev)
628 {
629 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_TBTTHOLD, 0);
630 /* Commit the write */
631 b43_read32(dev, B43_MMIO_MACCTL);
632 }
633
b43_tsf_write_locked(struct b43_wldev * dev,u64 tsf)634 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
635 {
636 u32 low, high;
637
638 B43_WARN_ON(dev->dev->core_rev < 3);
639
640 low = tsf;
641 high = (tsf >> 32);
642 /* The hardware guarantees us an atomic write, if we
643 * write the low register first. */
644 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
645 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
646 }
647
b43_tsf_write(struct b43_wldev * dev,u64 tsf)648 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
649 {
650 b43_time_lock(dev);
651 b43_tsf_write_locked(dev, tsf);
652 b43_time_unlock(dev);
653 }
654
655 static
b43_macfilter_set(struct b43_wldev * dev,u16 offset,const u8 * mac)656 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
657 {
658 static const u8 zero_addr[ETH_ALEN] = { 0 };
659 u16 data;
660
661 if (!mac)
662 mac = zero_addr;
663
664 offset |= 0x0020;
665 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
666
667 data = mac[0];
668 data |= mac[1] << 8;
669 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
670 data = mac[2];
671 data |= mac[3] << 8;
672 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
673 data = mac[4];
674 data |= mac[5] << 8;
675 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
676 }
677
b43_write_mac_bssid_templates(struct b43_wldev * dev)678 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
679 {
680 const u8 *mac;
681 const u8 *bssid;
682 u8 mac_bssid[ETH_ALEN * 2];
683 int i;
684 u32 tmp;
685
686 bssid = dev->wl->bssid;
687 mac = dev->wl->mac_addr;
688
689 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
690
691 memcpy(mac_bssid, mac, ETH_ALEN);
692 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
693
694 /* Write our MAC address and BSSID to template ram */
695 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
696 tmp = (u32) (mac_bssid[i + 0]);
697 tmp |= (u32) (mac_bssid[i + 1]) << 8;
698 tmp |= (u32) (mac_bssid[i + 2]) << 16;
699 tmp |= (u32) (mac_bssid[i + 3]) << 24;
700 b43_ram_write(dev, 0x20 + i, tmp);
701 }
702 }
703
b43_upload_card_macaddress(struct b43_wldev * dev)704 static void b43_upload_card_macaddress(struct b43_wldev *dev)
705 {
706 b43_write_mac_bssid_templates(dev);
707 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
708 }
709
b43_set_slot_time(struct b43_wldev * dev,u16 slot_time)710 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
711 {
712 /* slot_time is in usec. */
713 /* This test used to exit for all but a G PHY. */
714 if (b43_current_band(dev->wl) == NL80211_BAND_5GHZ)
715 return;
716 b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
717 /* Shared memory location 0x0010 is the slot time and should be
718 * set to slot_time; however, this register is initially 0 and changing
719 * the value adversely affects the transmit rate for BCM4311
720 * devices. Until this behavior is unterstood, delete this step
721 *
722 * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
723 */
724 }
725
b43_short_slot_timing_enable(struct b43_wldev * dev)726 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
727 {
728 b43_set_slot_time(dev, 9);
729 }
730
b43_short_slot_timing_disable(struct b43_wldev * dev)731 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
732 {
733 b43_set_slot_time(dev, 20);
734 }
735
736 /* DummyTransmission function, as documented on
737 * https://bcm-v4.sipsolutions.net/802.11/DummyTransmission
738 */
b43_dummy_transmission(struct b43_wldev * dev,bool ofdm,bool pa_on)739 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
740 {
741 struct b43_phy *phy = &dev->phy;
742 unsigned int i, max_loop;
743 u16 value;
744 u32 buffer[5] = {
745 0x00000000,
746 0x00D40000,
747 0x00000000,
748 0x01000000,
749 0x00000000,
750 };
751
752 if (ofdm) {
753 max_loop = 0x1E;
754 buffer[0] = 0x000201CC;
755 } else {
756 max_loop = 0xFA;
757 buffer[0] = 0x000B846E;
758 }
759
760 for (i = 0; i < 5; i++)
761 b43_ram_write(dev, i * 4, buffer[i]);
762
763 b43_write16(dev, B43_MMIO_XMTSEL, 0x0000);
764
765 if (dev->dev->core_rev < 11)
766 b43_write16(dev, B43_MMIO_WEPCTL, 0x0000);
767 else
768 b43_write16(dev, B43_MMIO_WEPCTL, 0x0100);
769
770 value = (ofdm ? 0x41 : 0x40);
771 b43_write16(dev, B43_MMIO_TXE0_PHYCTL, value);
772 if (phy->type == B43_PHYTYPE_N || phy->type == B43_PHYTYPE_LP ||
773 phy->type == B43_PHYTYPE_LCN)
774 b43_write16(dev, B43_MMIO_TXE0_PHYCTL1, 0x1A02);
775
776 b43_write16(dev, B43_MMIO_TXE0_WM_0, 0x0000);
777 b43_write16(dev, B43_MMIO_TXE0_WM_1, 0x0000);
778
779 b43_write16(dev, B43_MMIO_XMTTPLATETXPTR, 0x0000);
780 b43_write16(dev, B43_MMIO_XMTTXCNT, 0x0014);
781 b43_write16(dev, B43_MMIO_XMTSEL, 0x0826);
782 b43_write16(dev, B43_MMIO_TXE0_CTL, 0x0000);
783
784 if (!pa_on && phy->type == B43_PHYTYPE_N) {
785 ; /*b43_nphy_pa_override(dev, false) */
786 }
787
788 switch (phy->type) {
789 case B43_PHYTYPE_N:
790 case B43_PHYTYPE_LCN:
791 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x00D0);
792 break;
793 case B43_PHYTYPE_LP:
794 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0050);
795 break;
796 default:
797 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0030);
798 }
799 b43_read16(dev, B43_MMIO_TXE0_AUX);
800
801 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
802 b43_radio_write16(dev, 0x0051, 0x0017);
803 for (i = 0x00; i < max_loop; i++) {
804 value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
805 if (value & 0x0080)
806 break;
807 udelay(10);
808 }
809 for (i = 0x00; i < 0x0A; i++) {
810 value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
811 if (value & 0x0400)
812 break;
813 udelay(10);
814 }
815 for (i = 0x00; i < 0x19; i++) {
816 value = b43_read16(dev, B43_MMIO_IFSSTAT);
817 if (!(value & 0x0100))
818 break;
819 udelay(10);
820 }
821 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
822 b43_radio_write16(dev, 0x0051, 0x0037);
823 }
824
key_write(struct b43_wldev * dev,u8 index,u8 algorithm,const u8 * key)825 static void key_write(struct b43_wldev *dev,
826 u8 index, u8 algorithm, const u8 *key)
827 {
828 unsigned int i;
829 u32 offset;
830 u16 value;
831 u16 kidx;
832
833 /* Key index/algo block */
834 kidx = b43_kidx_to_fw(dev, index);
835 value = ((kidx << 4) | algorithm);
836 b43_shm_write16(dev, B43_SHM_SHARED,
837 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
838
839 /* Write the key to the Key Table Pointer offset */
840 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
841 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
842 value = key[i];
843 value |= (u16) (key[i + 1]) << 8;
844 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
845 }
846 }
847
keymac_write(struct b43_wldev * dev,u8 index,const u8 * addr)848 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
849 {
850 u32 addrtmp[2] = { 0, 0, };
851 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
852
853 if (b43_new_kidx_api(dev))
854 pairwise_keys_start = B43_NR_GROUP_KEYS;
855
856 B43_WARN_ON(index < pairwise_keys_start);
857 /* We have four default TX keys and possibly four default RX keys.
858 * Physical mac 0 is mapped to physical key 4 or 8, depending
859 * on the firmware version.
860 * So we must adjust the index here.
861 */
862 index -= pairwise_keys_start;
863 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
864
865 if (addr) {
866 addrtmp[0] = addr[0];
867 addrtmp[0] |= ((u32) (addr[1]) << 8);
868 addrtmp[0] |= ((u32) (addr[2]) << 16);
869 addrtmp[0] |= ((u32) (addr[3]) << 24);
870 addrtmp[1] = addr[4];
871 addrtmp[1] |= ((u32) (addr[5]) << 8);
872 }
873
874 /* Receive match transmitter address (RCMTA) mechanism */
875 b43_shm_write32(dev, B43_SHM_RCMTA,
876 (index * 2) + 0, addrtmp[0]);
877 b43_shm_write16(dev, B43_SHM_RCMTA,
878 (index * 2) + 1, addrtmp[1]);
879 }
880
881 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
882 * When a packet is received, the iv32 is checked.
883 * - if it doesn't the packet is returned without modification (and software
884 * decryption can be done). That's what happen when iv16 wrap.
885 * - if it does, the rc4 key is computed, and decryption is tried.
886 * Either it will success and B43_RX_MAC_DEC is returned,
887 * either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
888 * and the packet is not usable (it got modified by the ucode).
889 * So in order to never have B43_RX_MAC_DECERR, we should provide
890 * a iv32 and phase1key that match. Because we drop packets in case of
891 * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
892 * packets will be lost without higher layer knowing (ie no resync possible
893 * until next wrap).
894 *
895 * NOTE : this should support 50 key like RCMTA because
896 * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
897 */
rx_tkip_phase1_write(struct b43_wldev * dev,u8 index,u32 iv32,u16 * phase1key)898 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
899 u16 *phase1key)
900 {
901 unsigned int i;
902 u32 offset;
903 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
904
905 if (!modparam_hwtkip)
906 return;
907
908 if (b43_new_kidx_api(dev))
909 pairwise_keys_start = B43_NR_GROUP_KEYS;
910
911 B43_WARN_ON(index < pairwise_keys_start);
912 /* We have four default TX keys and possibly four default RX keys.
913 * Physical mac 0 is mapped to physical key 4 or 8, depending
914 * on the firmware version.
915 * So we must adjust the index here.
916 */
917 index -= pairwise_keys_start;
918 B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
919
920 if (b43_debug(dev, B43_DBG_KEYS)) {
921 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
922 index, iv32);
923 }
924 /* Write the key to the RX tkip shared mem */
925 offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
926 for (i = 0; i < 10; i += 2) {
927 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
928 phase1key ? phase1key[i / 2] : 0);
929 }
930 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
931 b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
932 }
933
b43_op_update_tkip_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_key_conf * keyconf,struct ieee80211_sta * sta,u32 iv32,u16 * phase1key)934 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
935 struct ieee80211_vif *vif,
936 struct ieee80211_key_conf *keyconf,
937 struct ieee80211_sta *sta,
938 u32 iv32, u16 *phase1key)
939 {
940 struct b43_wl *wl = hw_to_b43_wl(hw);
941 struct b43_wldev *dev;
942 int index = keyconf->hw_key_idx;
943
944 if (B43_WARN_ON(!modparam_hwtkip))
945 return;
946
947 /* This is only called from the RX path through mac80211, where
948 * our mutex is already locked. */
949 B43_WARN_ON(!mutex_is_locked(&wl->mutex));
950 dev = wl->current_dev;
951 B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
952
953 keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
954
955 rx_tkip_phase1_write(dev, index, iv32, phase1key);
956 /* only pairwise TKIP keys are supported right now */
957 if (WARN_ON(!sta))
958 return;
959 keymac_write(dev, index, sta->addr);
960 }
961
do_key_write(struct b43_wldev * dev,u8 index,u8 algorithm,const u8 * key,size_t key_len,const u8 * mac_addr)962 static void do_key_write(struct b43_wldev *dev,
963 u8 index, u8 algorithm,
964 const u8 *key, size_t key_len, const u8 *mac_addr)
965 {
966 u8 buf[B43_SEC_KEYSIZE] = { 0, };
967 u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
968
969 if (b43_new_kidx_api(dev))
970 pairwise_keys_start = B43_NR_GROUP_KEYS;
971
972 B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
973 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
974
975 if (index >= pairwise_keys_start)
976 keymac_write(dev, index, NULL); /* First zero out mac. */
977 if (algorithm == B43_SEC_ALGO_TKIP) {
978 /*
979 * We should provide an initial iv32, phase1key pair.
980 * We could start with iv32=0 and compute the corresponding
981 * phase1key, but this means calling ieee80211_get_tkip_key
982 * with a fake skb (or export other tkip function).
983 * Because we are lazy we hope iv32 won't start with
984 * 0xffffffff and let's b43_op_update_tkip_key provide a
985 * correct pair.
986 */
987 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
988 } else if (index >= pairwise_keys_start) /* clear it */
989 rx_tkip_phase1_write(dev, index, 0, NULL);
990 if (key)
991 memcpy(buf, key, key_len);
992 key_write(dev, index, algorithm, buf);
993 if (index >= pairwise_keys_start)
994 keymac_write(dev, index, mac_addr);
995
996 dev->key[index].algorithm = algorithm;
997 }
998
b43_key_write(struct b43_wldev * dev,int index,u8 algorithm,const u8 * key,size_t key_len,const u8 * mac_addr,struct ieee80211_key_conf * keyconf)999 static int b43_key_write(struct b43_wldev *dev,
1000 int index, u8 algorithm,
1001 const u8 *key, size_t key_len,
1002 const u8 *mac_addr,
1003 struct ieee80211_key_conf *keyconf)
1004 {
1005 int i;
1006 int pairwise_keys_start;
1007
1008 /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
1009 * - Temporal Encryption Key (128 bits)
1010 * - Temporal Authenticator Tx MIC Key (64 bits)
1011 * - Temporal Authenticator Rx MIC Key (64 bits)
1012 *
1013 * Hardware only store TEK
1014 */
1015 if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
1016 key_len = 16;
1017 if (key_len > B43_SEC_KEYSIZE)
1018 return -EINVAL;
1019 for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
1020 /* Check that we don't already have this key. */
1021 B43_WARN_ON(dev->key[i].keyconf == keyconf);
1022 }
1023 if (index < 0) {
1024 /* Pairwise key. Get an empty slot for the key. */
1025 if (b43_new_kidx_api(dev))
1026 pairwise_keys_start = B43_NR_GROUP_KEYS;
1027 else
1028 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1029 for (i = pairwise_keys_start;
1030 i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
1031 i++) {
1032 B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
1033 if (!dev->key[i].keyconf) {
1034 /* found empty */
1035 index = i;
1036 break;
1037 }
1038 }
1039 if (index < 0) {
1040 b43warn(dev->wl, "Out of hardware key memory\n");
1041 return -ENOSPC;
1042 }
1043 } else
1044 B43_WARN_ON(index > 3);
1045
1046 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
1047 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1048 /* Default RX key */
1049 B43_WARN_ON(mac_addr);
1050 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
1051 }
1052 keyconf->hw_key_idx = index;
1053 dev->key[index].keyconf = keyconf;
1054
1055 return 0;
1056 }
1057
b43_key_clear(struct b43_wldev * dev,int index)1058 static int b43_key_clear(struct b43_wldev *dev, int index)
1059 {
1060 if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
1061 return -EINVAL;
1062 do_key_write(dev, index, B43_SEC_ALGO_NONE,
1063 NULL, B43_SEC_KEYSIZE, NULL);
1064 if ((index <= 3) && !b43_new_kidx_api(dev)) {
1065 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
1066 NULL, B43_SEC_KEYSIZE, NULL);
1067 }
1068 dev->key[index].keyconf = NULL;
1069
1070 return 0;
1071 }
1072
b43_clear_keys(struct b43_wldev * dev)1073 static void b43_clear_keys(struct b43_wldev *dev)
1074 {
1075 int i, count;
1076
1077 if (b43_new_kidx_api(dev))
1078 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1079 else
1080 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1081 for (i = 0; i < count; i++)
1082 b43_key_clear(dev, i);
1083 }
1084
b43_dump_keymemory(struct b43_wldev * dev)1085 static void b43_dump_keymemory(struct b43_wldev *dev)
1086 {
1087 unsigned int i, index, count, offset, pairwise_keys_start;
1088 u8 mac[ETH_ALEN];
1089 u16 algo;
1090 u32 rcmta0;
1091 u16 rcmta1;
1092 u64 hf;
1093 struct b43_key *key;
1094
1095 if (!b43_debug(dev, B43_DBG_KEYS))
1096 return;
1097
1098 hf = b43_hf_read(dev);
1099 b43dbg(dev->wl, "Hardware key memory dump: USEDEFKEYS=%u\n",
1100 !!(hf & B43_HF_USEDEFKEYS));
1101 if (b43_new_kidx_api(dev)) {
1102 pairwise_keys_start = B43_NR_GROUP_KEYS;
1103 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1104 } else {
1105 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1106 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1107 }
1108 for (index = 0; index < count; index++) {
1109 key = &(dev->key[index]);
1110 printk(KERN_DEBUG "Key slot %02u: %s",
1111 index, (key->keyconf == NULL) ? " " : "*");
1112 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1113 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1114 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1115 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1116 }
1117
1118 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1119 B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1120 printk(" Algo: %04X/%02X", algo, key->algorithm);
1121
1122 if (index >= pairwise_keys_start) {
1123 if (key->algorithm == B43_SEC_ALGO_TKIP) {
1124 printk(" TKIP: ");
1125 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1126 for (i = 0; i < 14; i += 2) {
1127 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1128 printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1129 }
1130 }
1131 rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1132 ((index - pairwise_keys_start) * 2) + 0);
1133 rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1134 ((index - pairwise_keys_start) * 2) + 1);
1135 *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1136 *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1137 printk(" MAC: %pM", mac);
1138 } else
1139 printk(" DEFAULT KEY");
1140 printk("\n");
1141 }
1142 }
1143
b43_power_saving_ctl_bits(struct b43_wldev * dev,unsigned int ps_flags)1144 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1145 {
1146 u32 macctl;
1147 u16 ucstat;
1148 bool hwps;
1149 bool awake;
1150 int i;
1151
1152 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1153 (ps_flags & B43_PS_DISABLED));
1154 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1155
1156 if (ps_flags & B43_PS_ENABLED) {
1157 hwps = true;
1158 } else if (ps_flags & B43_PS_DISABLED) {
1159 hwps = false;
1160 } else {
1161 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1162 // and thus is not an AP and we are associated, set bit 25
1163 }
1164 if (ps_flags & B43_PS_AWAKE) {
1165 awake = true;
1166 } else if (ps_flags & B43_PS_ASLEEP) {
1167 awake = false;
1168 } else {
1169 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1170 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
1171 // successful, set bit26
1172 }
1173
1174 /* FIXME: For now we force awake-on and hwps-off */
1175 hwps = false;
1176 awake = true;
1177
1178 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1179 if (hwps)
1180 macctl |= B43_MACCTL_HWPS;
1181 else
1182 macctl &= ~B43_MACCTL_HWPS;
1183 if (awake)
1184 macctl |= B43_MACCTL_AWAKE;
1185 else
1186 macctl &= ~B43_MACCTL_AWAKE;
1187 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1188 /* Commit write */
1189 b43_read32(dev, B43_MMIO_MACCTL);
1190 if (awake && dev->dev->core_rev >= 5) {
1191 /* Wait for the microcode to wake up. */
1192 for (i = 0; i < 100; i++) {
1193 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1194 B43_SHM_SH_UCODESTAT);
1195 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1196 break;
1197 udelay(10);
1198 }
1199 }
1200 }
1201
1202 /* https://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
b43_wireless_core_phy_pll_reset(struct b43_wldev * dev)1203 void b43_wireless_core_phy_pll_reset(struct b43_wldev *dev)
1204 {
1205 struct bcma_drv_cc *bcma_cc __maybe_unused;
1206 struct ssb_chipcommon *ssb_cc __maybe_unused;
1207
1208 switch (dev->dev->bus_type) {
1209 #ifdef CONFIG_B43_BCMA
1210 case B43_BUS_BCMA:
1211 bcma_cc = &dev->dev->bdev->bus->drv_cc;
1212
1213 bcma_cc_write32(bcma_cc, BCMA_CC_PMU_CHIPCTL_ADDR, 0);
1214 bcma_cc_mask32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, ~0x4);
1215 bcma_cc_set32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, 0x4);
1216 bcma_cc_mask32(bcma_cc, BCMA_CC_PMU_CHIPCTL_DATA, ~0x4);
1217 break;
1218 #endif
1219 #ifdef CONFIG_B43_SSB
1220 case B43_BUS_SSB:
1221 ssb_cc = &dev->dev->sdev->bus->chipco;
1222
1223 chipco_write32(ssb_cc, SSB_CHIPCO_CHIPCTL_ADDR, 0);
1224 chipco_mask32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, ~0x4);
1225 chipco_set32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, 0x4);
1226 chipco_mask32(ssb_cc, SSB_CHIPCO_CHIPCTL_DATA, ~0x4);
1227 break;
1228 #endif
1229 }
1230 }
1231
1232 #ifdef CONFIG_B43_BCMA
b43_bcma_phy_reset(struct b43_wldev * dev)1233 static void b43_bcma_phy_reset(struct b43_wldev *dev)
1234 {
1235 u32 flags;
1236
1237 /* Put PHY into reset */
1238 flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1239 flags |= B43_BCMA_IOCTL_PHY_RESET;
1240 flags |= B43_BCMA_IOCTL_PHY_BW_20MHZ; /* Make 20 MHz def */
1241 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
1242 udelay(2);
1243
1244 b43_phy_take_out_of_reset(dev);
1245 }
1246
b43_bcma_wireless_core_reset(struct b43_wldev * dev,bool gmode)1247 static void b43_bcma_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1248 {
1249 u32 req = B43_BCMA_CLKCTLST_80211_PLL_REQ |
1250 B43_BCMA_CLKCTLST_PHY_PLL_REQ;
1251 u32 status = B43_BCMA_CLKCTLST_80211_PLL_ST |
1252 B43_BCMA_CLKCTLST_PHY_PLL_ST;
1253 u32 flags;
1254
1255 flags = B43_BCMA_IOCTL_PHY_CLKEN;
1256 if (gmode)
1257 flags |= B43_BCMA_IOCTL_GMODE;
1258 b43_device_enable(dev, flags);
1259
1260 if (dev->phy.type == B43_PHYTYPE_AC) {
1261 u16 tmp;
1262
1263 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1264 tmp &= ~B43_BCMA_IOCTL_DAC;
1265 tmp |= 0x100;
1266 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
1267
1268 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1269 tmp &= ~B43_BCMA_IOCTL_PHY_CLKEN;
1270 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
1271
1272 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1273 tmp |= B43_BCMA_IOCTL_PHY_CLKEN;
1274 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
1275 }
1276
1277 bcma_core_set_clockmode(dev->dev->bdev, BCMA_CLKMODE_FAST);
1278 b43_bcma_phy_reset(dev);
1279 bcma_core_pll_ctl(dev->dev->bdev, req, status, true);
1280 }
1281 #endif
1282
1283 #ifdef CONFIG_B43_SSB
b43_ssb_wireless_core_reset(struct b43_wldev * dev,bool gmode)1284 static void b43_ssb_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1285 {
1286 u32 flags = 0;
1287
1288 if (gmode)
1289 flags |= B43_TMSLOW_GMODE;
1290 flags |= B43_TMSLOW_PHYCLKEN;
1291 flags |= B43_TMSLOW_PHYRESET;
1292 if (dev->phy.type == B43_PHYTYPE_N)
1293 flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */
1294 b43_device_enable(dev, flags);
1295 msleep(2); /* Wait for the PLL to turn on. */
1296
1297 b43_phy_take_out_of_reset(dev);
1298 }
1299 #endif
1300
b43_wireless_core_reset(struct b43_wldev * dev,bool gmode)1301 void b43_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1302 {
1303 u32 macctl;
1304
1305 switch (dev->dev->bus_type) {
1306 #ifdef CONFIG_B43_BCMA
1307 case B43_BUS_BCMA:
1308 b43_bcma_wireless_core_reset(dev, gmode);
1309 break;
1310 #endif
1311 #ifdef CONFIG_B43_SSB
1312 case B43_BUS_SSB:
1313 b43_ssb_wireless_core_reset(dev, gmode);
1314 break;
1315 #endif
1316 }
1317
1318 /* Turn Analog ON, but only if we already know the PHY-type.
1319 * This protects against very early setup where we don't know the
1320 * PHY-type, yet. wireless_core_reset will be called once again later,
1321 * when we know the PHY-type. */
1322 if (dev->phy.ops)
1323 dev->phy.ops->switch_analog(dev, 1);
1324
1325 macctl = b43_read32(dev, B43_MMIO_MACCTL);
1326 macctl &= ~B43_MACCTL_GMODE;
1327 if (gmode)
1328 macctl |= B43_MACCTL_GMODE;
1329 macctl |= B43_MACCTL_IHR_ENABLED;
1330 b43_write32(dev, B43_MMIO_MACCTL, macctl);
1331 }
1332
handle_irq_transmit_status(struct b43_wldev * dev)1333 static void handle_irq_transmit_status(struct b43_wldev *dev)
1334 {
1335 u32 v0, v1;
1336 u16 tmp;
1337 struct b43_txstatus stat;
1338
1339 while (1) {
1340 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1341 if (!(v0 & 0x00000001))
1342 break;
1343 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1344
1345 stat.cookie = (v0 >> 16);
1346 stat.seq = (v1 & 0x0000FFFF);
1347 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1348 tmp = (v0 & 0x0000FFFF);
1349 stat.frame_count = ((tmp & 0xF000) >> 12);
1350 stat.rts_count = ((tmp & 0x0F00) >> 8);
1351 stat.supp_reason = ((tmp & 0x001C) >> 2);
1352 stat.pm_indicated = !!(tmp & 0x0080);
1353 stat.intermediate = !!(tmp & 0x0040);
1354 stat.for_ampdu = !!(tmp & 0x0020);
1355 stat.acked = !!(tmp & 0x0002);
1356
1357 b43_handle_txstatus(dev, &stat);
1358 }
1359 }
1360
drain_txstatus_queue(struct b43_wldev * dev)1361 static void drain_txstatus_queue(struct b43_wldev *dev)
1362 {
1363 u32 dummy;
1364
1365 if (dev->dev->core_rev < 5)
1366 return;
1367 /* Read all entries from the microcode TXstatus FIFO
1368 * and throw them away.
1369 */
1370 while (1) {
1371 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1372 if (!(dummy & 0x00000001))
1373 break;
1374 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1375 }
1376 }
1377
b43_jssi_read(struct b43_wldev * dev)1378 static u32 b43_jssi_read(struct b43_wldev *dev)
1379 {
1380 u32 val = 0;
1381
1382 val = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI1);
1383 val <<= 16;
1384 val |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI0);
1385
1386 return val;
1387 }
1388
b43_jssi_write(struct b43_wldev * dev,u32 jssi)1389 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1390 {
1391 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI0,
1392 (jssi & 0x0000FFFF));
1393 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_JSSI1,
1394 (jssi & 0xFFFF0000) >> 16);
1395 }
1396
b43_generate_noise_sample(struct b43_wldev * dev)1397 static void b43_generate_noise_sample(struct b43_wldev *dev)
1398 {
1399 b43_jssi_write(dev, 0x7F7F7F7F);
1400 b43_write32(dev, B43_MMIO_MACCMD,
1401 b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1402 }
1403
b43_calculate_link_quality(struct b43_wldev * dev)1404 static void b43_calculate_link_quality(struct b43_wldev *dev)
1405 {
1406 /* Top half of Link Quality calculation. */
1407
1408 if (dev->phy.type != B43_PHYTYPE_G)
1409 return;
1410 if (dev->noisecalc.calculation_running)
1411 return;
1412 dev->noisecalc.calculation_running = true;
1413 dev->noisecalc.nr_samples = 0;
1414
1415 b43_generate_noise_sample(dev);
1416 }
1417
handle_irq_noise(struct b43_wldev * dev)1418 static void handle_irq_noise(struct b43_wldev *dev)
1419 {
1420 struct b43_phy_g *phy = dev->phy.g;
1421 u16 tmp;
1422 u8 noise[4];
1423 u8 i, j;
1424 s32 average;
1425
1426 /* Bottom half of Link Quality calculation. */
1427
1428 if (dev->phy.type != B43_PHYTYPE_G)
1429 return;
1430
1431 /* Possible race condition: It might be possible that the user
1432 * changed to a different channel in the meantime since we
1433 * started the calculation. We ignore that fact, since it's
1434 * not really that much of a problem. The background noise is
1435 * an estimation only anyway. Slightly wrong results will get damped
1436 * by the averaging of the 8 sample rounds. Additionally the
1437 * value is shortlived. So it will be replaced by the next noise
1438 * calculation round soon. */
1439
1440 B43_WARN_ON(!dev->noisecalc.calculation_running);
1441 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1442 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1443 noise[2] == 0x7F || noise[3] == 0x7F)
1444 goto generate_new;
1445
1446 /* Get the noise samples. */
1447 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1448 i = dev->noisecalc.nr_samples;
1449 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1450 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1451 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1452 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1453 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1454 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1455 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1456 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1457 dev->noisecalc.nr_samples++;
1458 if (dev->noisecalc.nr_samples == 8) {
1459 /* Calculate the Link Quality by the noise samples. */
1460 average = 0;
1461 for (i = 0; i < 8; i++) {
1462 for (j = 0; j < 4; j++)
1463 average += dev->noisecalc.samples[i][j];
1464 }
1465 average /= (8 * 4);
1466 average *= 125;
1467 average += 64;
1468 average /= 128;
1469 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1470 tmp = (tmp / 128) & 0x1F;
1471 if (tmp >= 8)
1472 average += 2;
1473 else
1474 average -= 25;
1475 if (tmp == 8)
1476 average -= 72;
1477 else
1478 average -= 48;
1479
1480 dev->stats.link_noise = average;
1481 dev->noisecalc.calculation_running = false;
1482 return;
1483 }
1484 generate_new:
1485 b43_generate_noise_sample(dev);
1486 }
1487
handle_irq_tbtt_indication(struct b43_wldev * dev)1488 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1489 {
1490 if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1491 ///TODO: PS TBTT
1492 } else {
1493 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1494 b43_power_saving_ctl_bits(dev, 0);
1495 }
1496 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1497 dev->dfq_valid = true;
1498 }
1499
handle_irq_atim_end(struct b43_wldev * dev)1500 static void handle_irq_atim_end(struct b43_wldev *dev)
1501 {
1502 if (dev->dfq_valid) {
1503 b43_write32(dev, B43_MMIO_MACCMD,
1504 b43_read32(dev, B43_MMIO_MACCMD)
1505 | B43_MACCMD_DFQ_VALID);
1506 dev->dfq_valid = false;
1507 }
1508 }
1509
handle_irq_pmq(struct b43_wldev * dev)1510 static void handle_irq_pmq(struct b43_wldev *dev)
1511 {
1512 u32 tmp;
1513
1514 //TODO: AP mode.
1515
1516 while (1) {
1517 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1518 if (!(tmp & 0x00000008))
1519 break;
1520 }
1521 /* 16bit write is odd, but correct. */
1522 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1523 }
1524
b43_write_template_common(struct b43_wldev * dev,const u8 * data,u16 size,u16 ram_offset,u16 shm_size_offset,u8 rate)1525 static void b43_write_template_common(struct b43_wldev *dev,
1526 const u8 *data, u16 size,
1527 u16 ram_offset,
1528 u16 shm_size_offset, u8 rate)
1529 {
1530 u32 i, tmp;
1531 struct b43_plcp_hdr4 plcp;
1532
1533 plcp.data = 0;
1534 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1535 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1536 ram_offset += sizeof(u32);
1537 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1538 * So leave the first two bytes of the next write blank.
1539 */
1540 tmp = (u32) (data[0]) << 16;
1541 tmp |= (u32) (data[1]) << 24;
1542 b43_ram_write(dev, ram_offset, tmp);
1543 ram_offset += sizeof(u32);
1544 for (i = 2; i < size; i += sizeof(u32)) {
1545 tmp = (u32) (data[i + 0]);
1546 if (i + 1 < size)
1547 tmp |= (u32) (data[i + 1]) << 8;
1548 if (i + 2 < size)
1549 tmp |= (u32) (data[i + 2]) << 16;
1550 if (i + 3 < size)
1551 tmp |= (u32) (data[i + 3]) << 24;
1552 b43_ram_write(dev, ram_offset + i - 2, tmp);
1553 }
1554 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1555 size + sizeof(struct b43_plcp_hdr6));
1556 }
1557
1558 /* Check if the use of the antenna that ieee80211 told us to
1559 * use is possible. This will fall back to DEFAULT.
1560 * "antenna_nr" is the antenna identifier we got from ieee80211. */
b43_ieee80211_antenna_sanitize(struct b43_wldev * dev,u8 antenna_nr)1561 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1562 u8 antenna_nr)
1563 {
1564 u8 antenna_mask;
1565
1566 if (antenna_nr == 0) {
1567 /* Zero means "use default antenna". That's always OK. */
1568 return 0;
1569 }
1570
1571 /* Get the mask of available antennas. */
1572 if (dev->phy.gmode)
1573 antenna_mask = dev->dev->bus_sprom->ant_available_bg;
1574 else
1575 antenna_mask = dev->dev->bus_sprom->ant_available_a;
1576
1577 if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1578 /* This antenna is not available. Fall back to default. */
1579 return 0;
1580 }
1581
1582 return antenna_nr;
1583 }
1584
1585 /* Convert a b43 antenna number value to the PHY TX control value. */
b43_antenna_to_phyctl(int antenna)1586 static u16 b43_antenna_to_phyctl(int antenna)
1587 {
1588 switch (antenna) {
1589 case B43_ANTENNA0:
1590 return B43_TXH_PHY_ANT0;
1591 case B43_ANTENNA1:
1592 return B43_TXH_PHY_ANT1;
1593 case B43_ANTENNA2:
1594 return B43_TXH_PHY_ANT2;
1595 case B43_ANTENNA3:
1596 return B43_TXH_PHY_ANT3;
1597 case B43_ANTENNA_AUTO0:
1598 case B43_ANTENNA_AUTO1:
1599 return B43_TXH_PHY_ANT01AUTO;
1600 }
1601 B43_WARN_ON(1);
1602 return 0;
1603 }
1604
b43_write_beacon_template(struct b43_wldev * dev,u16 ram_offset,u16 shm_size_offset)1605 static void b43_write_beacon_template(struct b43_wldev *dev,
1606 u16 ram_offset,
1607 u16 shm_size_offset)
1608 {
1609 unsigned int i, len, variable_len;
1610 const struct ieee80211_mgmt *bcn;
1611 const u8 *ie;
1612 bool tim_found = false;
1613 unsigned int rate;
1614 u16 ctl;
1615 int antenna;
1616 struct ieee80211_tx_info *info;
1617 unsigned long flags;
1618 struct sk_buff *beacon_skb;
1619
1620 spin_lock_irqsave(&dev->wl->beacon_lock, flags);
1621 info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1622 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1623 /* Clone the beacon, so it cannot go away, while we write it to hw. */
1624 beacon_skb = skb_clone(dev->wl->current_beacon, GFP_ATOMIC);
1625 spin_unlock_irqrestore(&dev->wl->beacon_lock, flags);
1626
1627 if (!beacon_skb) {
1628 b43dbg(dev->wl, "Could not upload beacon. "
1629 "Failed to clone beacon skb.");
1630 return;
1631 }
1632
1633 bcn = (const struct ieee80211_mgmt *)(beacon_skb->data);
1634 len = min_t(size_t, beacon_skb->len,
1635 0x200 - sizeof(struct b43_plcp_hdr6));
1636
1637 b43_write_template_common(dev, (const u8 *)bcn,
1638 len, ram_offset, shm_size_offset, rate);
1639
1640 /* Write the PHY TX control parameters. */
1641 antenna = B43_ANTENNA_DEFAULT;
1642 antenna = b43_antenna_to_phyctl(antenna);
1643 ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1644 /* We can't send beacons with short preamble. Would get PHY errors. */
1645 ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1646 ctl &= ~B43_TXH_PHY_ANT;
1647 ctl &= ~B43_TXH_PHY_ENC;
1648 ctl |= antenna;
1649 if (b43_is_cck_rate(rate))
1650 ctl |= B43_TXH_PHY_ENC_CCK;
1651 else
1652 ctl |= B43_TXH_PHY_ENC_OFDM;
1653 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1654
1655 /* Find the position of the TIM and the DTIM_period value
1656 * and write them to SHM. */
1657 ie = bcn->u.beacon.variable;
1658 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1659 for (i = 0; i < variable_len - 2; ) {
1660 uint8_t ie_id, ie_len;
1661
1662 ie_id = ie[i];
1663 ie_len = ie[i + 1];
1664 if (ie_id == 5) {
1665 u16 tim_position;
1666 u16 dtim_period;
1667 /* This is the TIM Information Element */
1668
1669 /* Check whether the ie_len is in the beacon data range. */
1670 if (variable_len < ie_len + 2 + i)
1671 break;
1672 /* A valid TIM is at least 4 bytes long. */
1673 if (ie_len < 4)
1674 break;
1675 tim_found = true;
1676
1677 tim_position = sizeof(struct b43_plcp_hdr6);
1678 tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1679 tim_position += i;
1680
1681 dtim_period = ie[i + 3];
1682
1683 b43_shm_write16(dev, B43_SHM_SHARED,
1684 B43_SHM_SH_TIMBPOS, tim_position);
1685 b43_shm_write16(dev, B43_SHM_SHARED,
1686 B43_SHM_SH_DTIMPER, dtim_period);
1687 break;
1688 }
1689 i += ie_len + 2;
1690 }
1691 if (!tim_found) {
1692 /*
1693 * If ucode wants to modify TIM do it behind the beacon, this
1694 * will happen, for example, when doing mesh networking.
1695 */
1696 b43_shm_write16(dev, B43_SHM_SHARED,
1697 B43_SHM_SH_TIMBPOS,
1698 len + sizeof(struct b43_plcp_hdr6));
1699 b43_shm_write16(dev, B43_SHM_SHARED,
1700 B43_SHM_SH_DTIMPER, 0);
1701 }
1702 b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1703
1704 dev_kfree_skb_any(beacon_skb);
1705 }
1706
b43_upload_beacon0(struct b43_wldev * dev)1707 static void b43_upload_beacon0(struct b43_wldev *dev)
1708 {
1709 struct b43_wl *wl = dev->wl;
1710
1711 if (wl->beacon0_uploaded)
1712 return;
1713 b43_write_beacon_template(dev, B43_SHM_SH_BT_BASE0, B43_SHM_SH_BTL0);
1714 wl->beacon0_uploaded = true;
1715 }
1716
b43_upload_beacon1(struct b43_wldev * dev)1717 static void b43_upload_beacon1(struct b43_wldev *dev)
1718 {
1719 struct b43_wl *wl = dev->wl;
1720
1721 if (wl->beacon1_uploaded)
1722 return;
1723 b43_write_beacon_template(dev, B43_SHM_SH_BT_BASE1, B43_SHM_SH_BTL1);
1724 wl->beacon1_uploaded = true;
1725 }
1726
handle_irq_beacon(struct b43_wldev * dev)1727 static void handle_irq_beacon(struct b43_wldev *dev)
1728 {
1729 struct b43_wl *wl = dev->wl;
1730 u32 cmd, beacon0_valid, beacon1_valid;
1731
1732 if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1733 !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) &&
1734 !b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
1735 return;
1736
1737 /* This is the bottom half of the asynchronous beacon update. */
1738
1739 /* Ignore interrupt in the future. */
1740 dev->irq_mask &= ~B43_IRQ_BEACON;
1741
1742 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1743 beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1744 beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1745
1746 /* Schedule interrupt manually, if busy. */
1747 if (beacon0_valid && beacon1_valid) {
1748 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1749 dev->irq_mask |= B43_IRQ_BEACON;
1750 return;
1751 }
1752
1753 if (unlikely(wl->beacon_templates_virgin)) {
1754 /* We never uploaded a beacon before.
1755 * Upload both templates now, but only mark one valid. */
1756 wl->beacon_templates_virgin = false;
1757 b43_upload_beacon0(dev);
1758 b43_upload_beacon1(dev);
1759 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1760 cmd |= B43_MACCMD_BEACON0_VALID;
1761 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1762 } else {
1763 if (!beacon0_valid) {
1764 b43_upload_beacon0(dev);
1765 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1766 cmd |= B43_MACCMD_BEACON0_VALID;
1767 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1768 } else if (!beacon1_valid) {
1769 b43_upload_beacon1(dev);
1770 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1771 cmd |= B43_MACCMD_BEACON1_VALID;
1772 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1773 }
1774 }
1775 }
1776
b43_do_beacon_update_trigger_work(struct b43_wldev * dev)1777 static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1778 {
1779 u32 old_irq_mask = dev->irq_mask;
1780
1781 /* update beacon right away or defer to irq */
1782 handle_irq_beacon(dev);
1783 if (old_irq_mask != dev->irq_mask) {
1784 /* The handler updated the IRQ mask. */
1785 B43_WARN_ON(!dev->irq_mask);
1786 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1787 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1788 } else {
1789 /* Device interrupts are currently disabled. That means
1790 * we just ran the hardirq handler and scheduled the
1791 * IRQ thread. The thread will write the IRQ mask when
1792 * it finished, so there's nothing to do here. Writing
1793 * the mask _here_ would incorrectly re-enable IRQs. */
1794 }
1795 }
1796 }
1797
b43_beacon_update_trigger_work(struct work_struct * work)1798 static void b43_beacon_update_trigger_work(struct work_struct *work)
1799 {
1800 struct b43_wl *wl = container_of(work, struct b43_wl,
1801 beacon_update_trigger);
1802 struct b43_wldev *dev;
1803
1804 mutex_lock(&wl->mutex);
1805 dev = wl->current_dev;
1806 if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1807 if (b43_bus_host_is_sdio(dev->dev)) {
1808 /* wl->mutex is enough. */
1809 b43_do_beacon_update_trigger_work(dev);
1810 } else {
1811 spin_lock_irq(&wl->hardirq_lock);
1812 b43_do_beacon_update_trigger_work(dev);
1813 spin_unlock_irq(&wl->hardirq_lock);
1814 }
1815 }
1816 mutex_unlock(&wl->mutex);
1817 }
1818
1819 /* Asynchronously update the packet templates in template RAM. */
b43_update_templates(struct b43_wl * wl)1820 static void b43_update_templates(struct b43_wl *wl)
1821 {
1822 struct sk_buff *beacon, *old_beacon;
1823 unsigned long flags;
1824
1825 /* This is the top half of the asynchronous beacon update.
1826 * The bottom half is the beacon IRQ.
1827 * Beacon update must be asynchronous to avoid sending an
1828 * invalid beacon. This can happen for example, if the firmware
1829 * transmits a beacon while we are updating it. */
1830
1831 /* We could modify the existing beacon and set the aid bit in
1832 * the TIM field, but that would probably require resizing and
1833 * moving of data within the beacon template.
1834 * Simply request a new beacon and let mac80211 do the hard work. */
1835 beacon = ieee80211_beacon_get(wl->hw, wl->vif, 0);
1836 if (unlikely(!beacon))
1837 return;
1838
1839 spin_lock_irqsave(&wl->beacon_lock, flags);
1840 old_beacon = wl->current_beacon;
1841 wl->current_beacon = beacon;
1842 wl->beacon0_uploaded = false;
1843 wl->beacon1_uploaded = false;
1844 spin_unlock_irqrestore(&wl->beacon_lock, flags);
1845
1846 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1847
1848 if (old_beacon)
1849 dev_kfree_skb_any(old_beacon);
1850 }
1851
b43_set_beacon_int(struct b43_wldev * dev,u16 beacon_int)1852 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1853 {
1854 b43_time_lock(dev);
1855 if (dev->dev->core_rev >= 3) {
1856 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1857 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1858 } else {
1859 b43_write16(dev, 0x606, (beacon_int >> 6));
1860 b43_write16(dev, 0x610, beacon_int);
1861 }
1862 b43_time_unlock(dev);
1863 b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1864 }
1865
b43_handle_firmware_panic(struct b43_wldev * dev)1866 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1867 {
1868 u16 reason;
1869
1870 /* Read the register that contains the reason code for the panic. */
1871 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1872 b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1873
1874 switch (reason) {
1875 default:
1876 b43dbg(dev->wl, "The panic reason is unknown.\n");
1877 fallthrough;
1878 case B43_FWPANIC_DIE:
1879 /* Do not restart the controller or firmware.
1880 * The device is nonfunctional from now on.
1881 * Restarting would result in this panic to trigger again,
1882 * so we avoid that recursion. */
1883 break;
1884 case B43_FWPANIC_RESTART:
1885 b43_controller_restart(dev, "Microcode panic");
1886 break;
1887 }
1888 }
1889
handle_irq_ucode_debug(struct b43_wldev * dev)1890 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1891 {
1892 unsigned int i, cnt;
1893 u16 reason, marker_id, marker_line;
1894 __le16 *buf;
1895
1896 /* The proprietary firmware doesn't have this IRQ. */
1897 if (!dev->fw.opensource)
1898 return;
1899
1900 /* Read the register that contains the reason code for this IRQ. */
1901 reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1902
1903 switch (reason) {
1904 case B43_DEBUGIRQ_PANIC:
1905 b43_handle_firmware_panic(dev);
1906 break;
1907 case B43_DEBUGIRQ_DUMP_SHM:
1908 if (!B43_DEBUG)
1909 break; /* Only with driver debugging enabled. */
1910 buf = kmalloc(4096, GFP_ATOMIC);
1911 if (!buf) {
1912 b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1913 goto out;
1914 }
1915 for (i = 0; i < 4096; i += 2) {
1916 u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1917 buf[i / 2] = cpu_to_le16(tmp);
1918 }
1919 b43info(dev->wl, "Shared memory dump:\n");
1920 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1921 16, 2, buf, 4096, 1);
1922 kfree(buf);
1923 break;
1924 case B43_DEBUGIRQ_DUMP_REGS:
1925 if (!B43_DEBUG)
1926 break; /* Only with driver debugging enabled. */
1927 b43info(dev->wl, "Microcode register dump:\n");
1928 for (i = 0, cnt = 0; i < 64; i++) {
1929 u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1930 if (cnt == 0)
1931 printk(KERN_INFO);
1932 printk("r%02u: 0x%04X ", i, tmp);
1933 cnt++;
1934 if (cnt == 6) {
1935 printk("\n");
1936 cnt = 0;
1937 }
1938 }
1939 printk("\n");
1940 break;
1941 case B43_DEBUGIRQ_MARKER:
1942 if (!B43_DEBUG)
1943 break; /* Only with driver debugging enabled. */
1944 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1945 B43_MARKER_ID_REG);
1946 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1947 B43_MARKER_LINE_REG);
1948 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1949 "at line number %u\n",
1950 marker_id, marker_line);
1951 break;
1952 default:
1953 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1954 reason);
1955 }
1956 out:
1957 /* Acknowledge the debug-IRQ, so the firmware can continue. */
1958 b43_shm_write16(dev, B43_SHM_SCRATCH,
1959 B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1960 }
1961
b43_do_interrupt_thread(struct b43_wldev * dev)1962 static void b43_do_interrupt_thread(struct b43_wldev *dev)
1963 {
1964 u32 reason;
1965 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1966 u32 merged_dma_reason = 0;
1967 int i;
1968
1969 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1970 return;
1971
1972 reason = dev->irq_reason;
1973 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1974 dma_reason[i] = dev->dma_reason[i];
1975 merged_dma_reason |= dma_reason[i];
1976 }
1977
1978 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1979 b43err(dev->wl, "MAC transmission error\n");
1980
1981 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1982 b43err(dev->wl, "PHY transmission error\n");
1983 rmb();
1984 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1985 atomic_set(&dev->phy.txerr_cnt,
1986 B43_PHY_TX_BADNESS_LIMIT);
1987 b43err(dev->wl, "Too many PHY TX errors, "
1988 "restarting the controller\n");
1989 b43_controller_restart(dev, "PHY TX errors");
1990 }
1991 }
1992
1993 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK))) {
1994 b43err(dev->wl,
1995 "Fatal DMA error: 0x%08X, 0x%08X, 0x%08X, 0x%08X, 0x%08X, 0x%08X\n",
1996 dma_reason[0], dma_reason[1],
1997 dma_reason[2], dma_reason[3],
1998 dma_reason[4], dma_reason[5]);
1999 b43err(dev->wl, "This device does not support DMA "
2000 "on your system. It will now be switched to PIO.\n");
2001 /* Fall back to PIO transfers if we get fatal DMA errors! */
2002 dev->use_pio = true;
2003 b43_controller_restart(dev, "DMA error");
2004 return;
2005 }
2006
2007 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
2008 handle_irq_ucode_debug(dev);
2009 if (reason & B43_IRQ_TBTT_INDI)
2010 handle_irq_tbtt_indication(dev);
2011 if (reason & B43_IRQ_ATIM_END)
2012 handle_irq_atim_end(dev);
2013 if (reason & B43_IRQ_BEACON)
2014 handle_irq_beacon(dev);
2015 if (reason & B43_IRQ_PMQ)
2016 handle_irq_pmq(dev);
2017 if (reason & B43_IRQ_TXFIFO_FLUSH_OK) {
2018 ;/* TODO */
2019 }
2020 if (reason & B43_IRQ_NOISESAMPLE_OK)
2021 handle_irq_noise(dev);
2022
2023 /* Check the DMA reason registers for received data. */
2024 if (dma_reason[0] & B43_DMAIRQ_RDESC_UFLOW) {
2025 if (B43_DEBUG)
2026 b43warn(dev->wl, "RX descriptor underrun\n");
2027 b43_dma_handle_rx_overflow(dev->dma.rx_ring);
2028 }
2029 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
2030 if (b43_using_pio_transfers(dev))
2031 b43_pio_rx(dev->pio.rx_queue);
2032 else
2033 b43_dma_rx(dev->dma.rx_ring);
2034 }
2035 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
2036 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
2037 B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
2038 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
2039 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
2040
2041 if (reason & B43_IRQ_TX_OK)
2042 handle_irq_transmit_status(dev);
2043
2044 /* Re-enable interrupts on the device by restoring the current interrupt mask. */
2045 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2046
2047 #if B43_DEBUG
2048 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
2049 dev->irq_count++;
2050 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
2051 if (reason & (1 << i))
2052 dev->irq_bit_count[i]++;
2053 }
2054 }
2055 #endif
2056 }
2057
2058 /* Interrupt thread handler. Handles device interrupts in thread context. */
b43_interrupt_thread_handler(int irq,void * dev_id)2059 static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
2060 {
2061 struct b43_wldev *dev = dev_id;
2062
2063 mutex_lock(&dev->wl->mutex);
2064 b43_do_interrupt_thread(dev);
2065 mutex_unlock(&dev->wl->mutex);
2066
2067 return IRQ_HANDLED;
2068 }
2069
b43_do_interrupt(struct b43_wldev * dev)2070 static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
2071 {
2072 u32 reason;
2073
2074 /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
2075 * On SDIO, this runs under wl->mutex. */
2076
2077 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2078 if (reason == 0xffffffff) /* shared IRQ */
2079 return IRQ_NONE;
2080 reason &= dev->irq_mask;
2081 if (!reason)
2082 return IRQ_NONE;
2083
2084 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
2085 & 0x0001FC00;
2086 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
2087 & 0x0000DC00;
2088 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
2089 & 0x0000DC00;
2090 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
2091 & 0x0001DC00;
2092 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
2093 & 0x0000DC00;
2094 /* Unused ring
2095 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
2096 & 0x0000DC00;
2097 */
2098
2099 /* ACK the interrupt. */
2100 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
2101 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
2102 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
2103 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
2104 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
2105 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
2106 /* Unused ring
2107 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
2108 */
2109
2110 /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
2111 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
2112 /* Save the reason bitmasks for the IRQ thread handler. */
2113 dev->irq_reason = reason;
2114
2115 return IRQ_WAKE_THREAD;
2116 }
2117
2118 /* Interrupt handler top-half. This runs with interrupts disabled. */
b43_interrupt_handler(int irq,void * dev_id)2119 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
2120 {
2121 struct b43_wldev *dev = dev_id;
2122 irqreturn_t ret;
2123
2124 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2125 return IRQ_NONE;
2126
2127 spin_lock(&dev->wl->hardirq_lock);
2128 ret = b43_do_interrupt(dev);
2129 spin_unlock(&dev->wl->hardirq_lock);
2130
2131 return ret;
2132 }
2133
2134 /* SDIO interrupt handler. This runs in process context. */
b43_sdio_interrupt_handler(struct b43_wldev * dev)2135 static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
2136 {
2137 struct b43_wl *wl = dev->wl;
2138 irqreturn_t ret;
2139
2140 mutex_lock(&wl->mutex);
2141
2142 ret = b43_do_interrupt(dev);
2143 if (ret == IRQ_WAKE_THREAD)
2144 b43_do_interrupt_thread(dev);
2145
2146 mutex_unlock(&wl->mutex);
2147 }
2148
b43_do_release_fw(struct b43_firmware_file * fw)2149 void b43_do_release_fw(struct b43_firmware_file *fw)
2150 {
2151 release_firmware(fw->data);
2152 fw->data = NULL;
2153 fw->filename = NULL;
2154 }
2155
b43_release_firmware(struct b43_wldev * dev)2156 static void b43_release_firmware(struct b43_wldev *dev)
2157 {
2158 complete(&dev->fw_load_complete);
2159 b43_do_release_fw(&dev->fw.ucode);
2160 b43_do_release_fw(&dev->fw.pcm);
2161 b43_do_release_fw(&dev->fw.initvals);
2162 b43_do_release_fw(&dev->fw.initvals_band);
2163 }
2164
b43_print_fw_helptext(struct b43_wl * wl,bool error)2165 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
2166 {
2167 const char text[] =
2168 "You must go to " \
2169 "https://wireless.wiki.kernel.org/en/users/Drivers/b43#devicefirmware " \
2170 "and download the correct firmware for this driver version. " \
2171 "Please carefully read all instructions on this website.\n";
2172
2173 if (error)
2174 b43err(wl, text);
2175 else
2176 b43warn(wl, text);
2177 }
2178
b43_fw_cb(const struct firmware * firmware,void * context)2179 static void b43_fw_cb(const struct firmware *firmware, void *context)
2180 {
2181 struct b43_request_fw_context *ctx = context;
2182
2183 ctx->blob = firmware;
2184 complete(&ctx->dev->fw_load_complete);
2185 }
2186
b43_do_request_fw(struct b43_request_fw_context * ctx,const char * name,struct b43_firmware_file * fw,bool async)2187 int b43_do_request_fw(struct b43_request_fw_context *ctx,
2188 const char *name,
2189 struct b43_firmware_file *fw, bool async)
2190 {
2191 struct b43_fw_header *hdr;
2192 u32 size;
2193 int err;
2194
2195 if (!name) {
2196 /* Don't fetch anything. Free possibly cached firmware. */
2197 /* FIXME: We should probably keep it anyway, to save some headache
2198 * on suspend/resume with multiband devices. */
2199 b43_do_release_fw(fw);
2200 return 0;
2201 }
2202 if (fw->filename) {
2203 if ((fw->type == ctx->req_type) &&
2204 (strcmp(fw->filename, name) == 0))
2205 return 0; /* Already have this fw. */
2206 /* Free the cached firmware first. */
2207 /* FIXME: We should probably do this later after we successfully
2208 * got the new fw. This could reduce headache with multiband devices.
2209 * We could also redesign this to cache the firmware for all possible
2210 * bands all the time. */
2211 b43_do_release_fw(fw);
2212 }
2213
2214 switch (ctx->req_type) {
2215 case B43_FWTYPE_PROPRIETARY:
2216 snprintf(ctx->fwname, sizeof(ctx->fwname),
2217 "b43%s/%s.fw",
2218 modparam_fwpostfix, name);
2219 break;
2220 case B43_FWTYPE_OPENSOURCE:
2221 snprintf(ctx->fwname, sizeof(ctx->fwname),
2222 "b43-open%s/%s.fw",
2223 modparam_fwpostfix, name);
2224 break;
2225 default:
2226 B43_WARN_ON(1);
2227 return -ENOSYS;
2228 }
2229 if (async) {
2230 /* do this part asynchronously */
2231 init_completion(&ctx->dev->fw_load_complete);
2232 err = request_firmware_nowait(THIS_MODULE, 1, ctx->fwname,
2233 ctx->dev->dev->dev, GFP_KERNEL,
2234 ctx, b43_fw_cb);
2235 if (err < 0) {
2236 pr_err("Unable to load firmware\n");
2237 return err;
2238 }
2239 wait_for_completion(&ctx->dev->fw_load_complete);
2240 if (ctx->blob)
2241 goto fw_ready;
2242 /* On some ARM systems, the async request will fail, but the next sync
2243 * request works. For this reason, we fall through here
2244 */
2245 }
2246 err = request_firmware(&ctx->blob, ctx->fwname,
2247 ctx->dev->dev->dev);
2248 if (err == -ENOENT) {
2249 snprintf(ctx->errors[ctx->req_type],
2250 sizeof(ctx->errors[ctx->req_type]),
2251 "Firmware file \"%s\" not found\n",
2252 ctx->fwname);
2253 return err;
2254 } else if (err) {
2255 snprintf(ctx->errors[ctx->req_type],
2256 sizeof(ctx->errors[ctx->req_type]),
2257 "Firmware file \"%s\" request failed (err=%d)\n",
2258 ctx->fwname, err);
2259 return err;
2260 }
2261 fw_ready:
2262 if (ctx->blob->size < sizeof(struct b43_fw_header))
2263 goto err_format;
2264 hdr = (struct b43_fw_header *)(ctx->blob->data);
2265 switch (hdr->type) {
2266 case B43_FW_TYPE_UCODE:
2267 case B43_FW_TYPE_PCM:
2268 size = be32_to_cpu(hdr->size);
2269 if (size != ctx->blob->size - sizeof(struct b43_fw_header))
2270 goto err_format;
2271 fallthrough;
2272 case B43_FW_TYPE_IV:
2273 if (hdr->ver != 1)
2274 goto err_format;
2275 break;
2276 default:
2277 goto err_format;
2278 }
2279
2280 fw->data = ctx->blob;
2281 fw->filename = name;
2282 fw->type = ctx->req_type;
2283
2284 return 0;
2285
2286 err_format:
2287 snprintf(ctx->errors[ctx->req_type],
2288 sizeof(ctx->errors[ctx->req_type]),
2289 "Firmware file \"%s\" format error.\n", ctx->fwname);
2290 release_firmware(ctx->blob);
2291
2292 return -EPROTO;
2293 }
2294
2295 /* https://bcm-v4.sipsolutions.net/802.11/Init/Firmware */
b43_try_request_fw(struct b43_request_fw_context * ctx)2296 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2297 {
2298 struct b43_wldev *dev = ctx->dev;
2299 struct b43_firmware *fw = &ctx->dev->fw;
2300 struct b43_phy *phy = &dev->phy;
2301 const u8 rev = ctx->dev->dev->core_rev;
2302 const char *filename;
2303 int err;
2304
2305 /* Get microcode */
2306 filename = NULL;
2307 switch (rev) {
2308 case 42:
2309 if (phy->type == B43_PHYTYPE_AC)
2310 filename = "ucode42";
2311 break;
2312 case 40:
2313 if (phy->type == B43_PHYTYPE_AC)
2314 filename = "ucode40";
2315 break;
2316 case 33:
2317 if (phy->type == B43_PHYTYPE_LCN40)
2318 filename = "ucode33_lcn40";
2319 break;
2320 case 30:
2321 if (phy->type == B43_PHYTYPE_N)
2322 filename = "ucode30_mimo";
2323 break;
2324 case 29:
2325 if (phy->type == B43_PHYTYPE_HT)
2326 filename = "ucode29_mimo";
2327 break;
2328 case 26:
2329 if (phy->type == B43_PHYTYPE_HT)
2330 filename = "ucode26_mimo";
2331 break;
2332 case 28:
2333 case 25:
2334 if (phy->type == B43_PHYTYPE_N)
2335 filename = "ucode25_mimo";
2336 else if (phy->type == B43_PHYTYPE_LCN)
2337 filename = "ucode25_lcn";
2338 break;
2339 case 24:
2340 if (phy->type == B43_PHYTYPE_LCN)
2341 filename = "ucode24_lcn";
2342 break;
2343 case 23:
2344 if (phy->type == B43_PHYTYPE_N)
2345 filename = "ucode16_mimo";
2346 break;
2347 case 16 ... 19:
2348 if (phy->type == B43_PHYTYPE_N)
2349 filename = "ucode16_mimo";
2350 else if (phy->type == B43_PHYTYPE_LP)
2351 filename = "ucode16_lp";
2352 break;
2353 case 15:
2354 filename = "ucode15";
2355 break;
2356 case 14:
2357 filename = "ucode14";
2358 break;
2359 case 13:
2360 filename = "ucode13";
2361 break;
2362 case 11 ... 12:
2363 filename = "ucode11";
2364 break;
2365 case 5 ... 10:
2366 filename = "ucode5";
2367 break;
2368 }
2369 if (!filename)
2370 goto err_no_ucode;
2371 err = b43_do_request_fw(ctx, filename, &fw->ucode, true);
2372 if (err)
2373 goto err_load;
2374
2375 /* Get PCM code */
2376 if ((rev >= 5) && (rev <= 10))
2377 filename = "pcm5";
2378 else if (rev >= 11)
2379 filename = NULL;
2380 else
2381 goto err_no_pcm;
2382 fw->pcm_request_failed = false;
2383 err = b43_do_request_fw(ctx, filename, &fw->pcm, false);
2384 if (err == -ENOENT) {
2385 /* We did not find a PCM file? Not fatal, but
2386 * core rev <= 10 must do without hwcrypto then. */
2387 fw->pcm_request_failed = true;
2388 } else if (err)
2389 goto err_load;
2390
2391 /* Get initvals */
2392 filename = NULL;
2393 switch (dev->phy.type) {
2394 case B43_PHYTYPE_G:
2395 if (rev == 13)
2396 filename = "b0g0initvals13";
2397 else if (rev >= 5 && rev <= 10)
2398 filename = "b0g0initvals5";
2399 break;
2400 case B43_PHYTYPE_N:
2401 if (rev == 30)
2402 filename = "n16initvals30";
2403 else if (rev == 28 || rev == 25)
2404 filename = "n0initvals25";
2405 else if (rev == 24)
2406 filename = "n0initvals24";
2407 else if (rev == 23)
2408 filename = "n0initvals16"; /* What about n0initvals22? */
2409 else if (rev >= 16 && rev <= 18)
2410 filename = "n0initvals16";
2411 else if (rev >= 11 && rev <= 12)
2412 filename = "n0initvals11";
2413 break;
2414 case B43_PHYTYPE_LP:
2415 if (rev >= 16 && rev <= 18)
2416 filename = "lp0initvals16";
2417 else if (rev == 15)
2418 filename = "lp0initvals15";
2419 else if (rev == 14)
2420 filename = "lp0initvals14";
2421 else if (rev == 13)
2422 filename = "lp0initvals13";
2423 break;
2424 case B43_PHYTYPE_HT:
2425 if (rev == 29)
2426 filename = "ht0initvals29";
2427 else if (rev == 26)
2428 filename = "ht0initvals26";
2429 break;
2430 case B43_PHYTYPE_LCN:
2431 if (rev == 24)
2432 filename = "lcn0initvals24";
2433 break;
2434 case B43_PHYTYPE_LCN40:
2435 if (rev == 33)
2436 filename = "lcn400initvals33";
2437 break;
2438 case B43_PHYTYPE_AC:
2439 if (rev == 42)
2440 filename = "ac1initvals42";
2441 else if (rev == 40)
2442 filename = "ac0initvals40";
2443 break;
2444 }
2445 if (!filename)
2446 goto err_no_initvals;
2447 err = b43_do_request_fw(ctx, filename, &fw->initvals, false);
2448 if (err)
2449 goto err_load;
2450
2451 /* Get bandswitch initvals */
2452 filename = NULL;
2453 switch (dev->phy.type) {
2454 case B43_PHYTYPE_G:
2455 if (rev == 13)
2456 filename = "b0g0bsinitvals13";
2457 else if (rev >= 5 && rev <= 10)
2458 filename = "b0g0bsinitvals5";
2459 break;
2460 case B43_PHYTYPE_N:
2461 if (rev == 30)
2462 filename = "n16bsinitvals30";
2463 else if (rev == 28 || rev == 25)
2464 filename = "n0bsinitvals25";
2465 else if (rev == 24)
2466 filename = "n0bsinitvals24";
2467 else if (rev == 23)
2468 filename = "n0bsinitvals16"; /* What about n0bsinitvals22? */
2469 else if (rev >= 16 && rev <= 18)
2470 filename = "n0bsinitvals16";
2471 else if (rev >= 11 && rev <= 12)
2472 filename = "n0bsinitvals11";
2473 break;
2474 case B43_PHYTYPE_LP:
2475 if (rev >= 16 && rev <= 18)
2476 filename = "lp0bsinitvals16";
2477 else if (rev == 15)
2478 filename = "lp0bsinitvals15";
2479 else if (rev == 14)
2480 filename = "lp0bsinitvals14";
2481 else if (rev == 13)
2482 filename = "lp0bsinitvals13";
2483 break;
2484 case B43_PHYTYPE_HT:
2485 if (rev == 29)
2486 filename = "ht0bsinitvals29";
2487 else if (rev == 26)
2488 filename = "ht0bsinitvals26";
2489 break;
2490 case B43_PHYTYPE_LCN:
2491 if (rev == 24)
2492 filename = "lcn0bsinitvals24";
2493 break;
2494 case B43_PHYTYPE_LCN40:
2495 if (rev == 33)
2496 filename = "lcn400bsinitvals33";
2497 break;
2498 case B43_PHYTYPE_AC:
2499 if (rev == 42)
2500 filename = "ac1bsinitvals42";
2501 else if (rev == 40)
2502 filename = "ac0bsinitvals40";
2503 break;
2504 }
2505 if (!filename)
2506 goto err_no_initvals;
2507 err = b43_do_request_fw(ctx, filename, &fw->initvals_band, false);
2508 if (err)
2509 goto err_load;
2510
2511 fw->opensource = (ctx->req_type == B43_FWTYPE_OPENSOURCE);
2512
2513 return 0;
2514
2515 err_no_ucode:
2516 err = ctx->fatal_failure = -EOPNOTSUPP;
2517 b43err(dev->wl, "The driver does not know which firmware (ucode) "
2518 "is required for your device (wl-core rev %u)\n", rev);
2519 goto error;
2520
2521 err_no_pcm:
2522 err = ctx->fatal_failure = -EOPNOTSUPP;
2523 b43err(dev->wl, "The driver does not know which firmware (PCM) "
2524 "is required for your device (wl-core rev %u)\n", rev);
2525 goto error;
2526
2527 err_no_initvals:
2528 err = ctx->fatal_failure = -EOPNOTSUPP;
2529 b43err(dev->wl, "The driver does not know which firmware (initvals) "
2530 "is required for your device (wl-core rev %u)\n", rev);
2531 goto error;
2532
2533 err_load:
2534 /* We failed to load this firmware image. The error message
2535 * already is in ctx->errors. Return and let our caller decide
2536 * what to do. */
2537 goto error;
2538
2539 error:
2540 b43_release_firmware(dev);
2541 return err;
2542 }
2543
2544 static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl);
2545 static void b43_one_core_detach(struct b43_bus_dev *dev);
2546 static int b43_rng_init(struct b43_wl *wl);
2547
b43_request_firmware(struct work_struct * work)2548 static void b43_request_firmware(struct work_struct *work)
2549 {
2550 struct b43_wl *wl = container_of(work,
2551 struct b43_wl, firmware_load);
2552 struct b43_wldev *dev = wl->current_dev;
2553 struct b43_request_fw_context *ctx;
2554 unsigned int i;
2555 int err;
2556 const char *errmsg;
2557
2558 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2559 if (!ctx)
2560 return;
2561 ctx->dev = dev;
2562
2563 ctx->req_type = B43_FWTYPE_PROPRIETARY;
2564 err = b43_try_request_fw(ctx);
2565 if (!err)
2566 goto start_ieee80211; /* Successfully loaded it. */
2567 /* Was fw version known? */
2568 if (ctx->fatal_failure)
2569 goto out;
2570
2571 /* proprietary fw not found, try open source */
2572 ctx->req_type = B43_FWTYPE_OPENSOURCE;
2573 err = b43_try_request_fw(ctx);
2574 if (!err)
2575 goto start_ieee80211; /* Successfully loaded it. */
2576 if(ctx->fatal_failure)
2577 goto out;
2578
2579 /* Could not find a usable firmware. Print the errors. */
2580 for (i = 0; i < B43_NR_FWTYPES; i++) {
2581 errmsg = ctx->errors[i];
2582 if (strlen(errmsg))
2583 b43err(dev->wl, "%s", errmsg);
2584 }
2585 b43_print_fw_helptext(dev->wl, 1);
2586 goto out;
2587
2588 start_ieee80211:
2589 wl->hw->queues = B43_QOS_QUEUE_NUM;
2590 if (!modparam_qos || dev->fw.opensource)
2591 wl->hw->queues = 1;
2592
2593 err = ieee80211_register_hw(wl->hw);
2594 if (err)
2595 goto out;
2596 wl->hw_registered = true;
2597 b43_leds_register(wl->current_dev);
2598
2599 /* Register HW RNG driver */
2600 b43_rng_init(wl);
2601
2602 out:
2603 kfree(ctx);
2604 }
2605
b43_upload_microcode(struct b43_wldev * dev)2606 static int b43_upload_microcode(struct b43_wldev *dev)
2607 {
2608 struct wiphy *wiphy = dev->wl->hw->wiphy;
2609 const size_t hdr_len = sizeof(struct b43_fw_header);
2610 const __be32 *data;
2611 unsigned int i, len;
2612 u16 fwrev, fwpatch, fwdate, fwtime;
2613 u32 tmp, macctl;
2614 int err = 0;
2615
2616 /* Jump the microcode PSM to offset 0 */
2617 macctl = b43_read32(dev, B43_MMIO_MACCTL);
2618 B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2619 macctl |= B43_MACCTL_PSM_JMP0;
2620 b43_write32(dev, B43_MMIO_MACCTL, macctl);
2621 /* Zero out all microcode PSM registers and shared memory. */
2622 for (i = 0; i < 64; i++)
2623 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2624 for (i = 0; i < 4096; i += 2)
2625 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2626
2627 /* Upload Microcode. */
2628 data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2629 len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2630 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2631 for (i = 0; i < len; i++) {
2632 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2633 udelay(10);
2634 }
2635
2636 if (dev->fw.pcm.data) {
2637 /* Upload PCM data. */
2638 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2639 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2640 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2641 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2642 /* No need for autoinc bit in SHM_HW */
2643 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2644 for (i = 0; i < len; i++) {
2645 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2646 udelay(10);
2647 }
2648 }
2649
2650 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2651
2652 /* Start the microcode PSM */
2653 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_JMP0,
2654 B43_MACCTL_PSM_RUN);
2655
2656 /* Wait for the microcode to load and respond */
2657 i = 0;
2658 while (1) {
2659 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2660 if (tmp == B43_IRQ_MAC_SUSPENDED)
2661 break;
2662 i++;
2663 if (i >= 20) {
2664 b43err(dev->wl, "Microcode not responding\n");
2665 b43_print_fw_helptext(dev->wl, 1);
2666 err = -ENODEV;
2667 goto error;
2668 }
2669 msleep(50);
2670 }
2671 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
2672
2673 /* Get and check the revisions. */
2674 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2675 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2676 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2677 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2678
2679 if (fwrev <= 0x128) {
2680 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2681 "binary drivers older than version 4.x is unsupported. "
2682 "You must upgrade your firmware files.\n");
2683 b43_print_fw_helptext(dev->wl, 1);
2684 err = -EOPNOTSUPP;
2685 goto error;
2686 }
2687 dev->fw.rev = fwrev;
2688 dev->fw.patch = fwpatch;
2689 if (dev->fw.rev >= 598)
2690 dev->fw.hdr_format = B43_FW_HDR_598;
2691 else if (dev->fw.rev >= 410)
2692 dev->fw.hdr_format = B43_FW_HDR_410;
2693 else
2694 dev->fw.hdr_format = B43_FW_HDR_351;
2695 WARN_ON(dev->fw.opensource != (fwdate == 0xFFFF));
2696
2697 dev->qos_enabled = dev->wl->hw->queues > 1;
2698 /* Default to firmware/hardware crypto acceleration. */
2699 dev->hwcrypto_enabled = true;
2700
2701 if (dev->fw.opensource) {
2702 u16 fwcapa;
2703
2704 /* Patchlevel info is encoded in the "time" field. */
2705 dev->fw.patch = fwtime;
2706 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2707 dev->fw.rev, dev->fw.patch);
2708
2709 fwcapa = b43_fwcapa_read(dev);
2710 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2711 b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2712 /* Disable hardware crypto and fall back to software crypto. */
2713 dev->hwcrypto_enabled = false;
2714 }
2715 /* adding QoS support should use an offline discovery mechanism */
2716 WARN(fwcapa & B43_FWCAPA_QOS, "QoS in OpenFW not supported\n");
2717 } else {
2718 b43info(dev->wl, "Loading firmware version %u.%u "
2719 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2720 fwrev, fwpatch,
2721 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2722 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2723 if (dev->fw.pcm_request_failed) {
2724 b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2725 "Hardware accelerated cryptography is disabled.\n");
2726 b43_print_fw_helptext(dev->wl, 0);
2727 }
2728 }
2729
2730 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
2731 dev->fw.rev, dev->fw.patch);
2732 wiphy->hw_version = dev->dev->core_id;
2733
2734 if (dev->fw.hdr_format == B43_FW_HDR_351) {
2735 /* We're over the deadline, but we keep support for old fw
2736 * until it turns out to be in major conflict with something new. */
2737 b43warn(dev->wl, "You are using an old firmware image. "
2738 "Support for old firmware will be removed soon "
2739 "(official deadline was July 2008).\n");
2740 b43_print_fw_helptext(dev->wl, 0);
2741 }
2742
2743 return 0;
2744
2745 error:
2746 /* Stop the microcode PSM. */
2747 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
2748 B43_MACCTL_PSM_JMP0);
2749
2750 return err;
2751 }
2752
b43_write_initvals(struct b43_wldev * dev,const struct b43_iv * ivals,size_t count,size_t array_size)2753 static int b43_write_initvals(struct b43_wldev *dev,
2754 const struct b43_iv *ivals,
2755 size_t count,
2756 size_t array_size)
2757 {
2758 const struct b43_iv *iv;
2759 u16 offset;
2760 size_t i;
2761 bool bit32;
2762
2763 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2764 iv = ivals;
2765 for (i = 0; i < count; i++) {
2766 if (array_size < sizeof(iv->offset_size))
2767 goto err_format;
2768 array_size -= sizeof(iv->offset_size);
2769 offset = be16_to_cpu(iv->offset_size);
2770 bit32 = !!(offset & B43_IV_32BIT);
2771 offset &= B43_IV_OFFSET_MASK;
2772 if (offset >= 0x1000)
2773 goto err_format;
2774 if (bit32) {
2775 u32 value;
2776
2777 if (array_size < sizeof(iv->data.d32))
2778 goto err_format;
2779 array_size -= sizeof(iv->data.d32);
2780
2781 value = get_unaligned_be32(&iv->data.d32);
2782 b43_write32(dev, offset, value);
2783
2784 iv = (const struct b43_iv *)((const uint8_t *)iv +
2785 sizeof(__be16) +
2786 sizeof(__be32));
2787 } else {
2788 u16 value;
2789
2790 if (array_size < sizeof(iv->data.d16))
2791 goto err_format;
2792 array_size -= sizeof(iv->data.d16);
2793
2794 value = be16_to_cpu(iv->data.d16);
2795 b43_write16(dev, offset, value);
2796
2797 iv = (const struct b43_iv *)((const uint8_t *)iv +
2798 sizeof(__be16) +
2799 sizeof(__be16));
2800 }
2801 }
2802 if (array_size)
2803 goto err_format;
2804
2805 return 0;
2806
2807 err_format:
2808 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2809 b43_print_fw_helptext(dev->wl, 1);
2810
2811 return -EPROTO;
2812 }
2813
b43_upload_initvals(struct b43_wldev * dev)2814 static int b43_upload_initvals(struct b43_wldev *dev)
2815 {
2816 const size_t hdr_len = sizeof(struct b43_fw_header);
2817 const struct b43_fw_header *hdr;
2818 struct b43_firmware *fw = &dev->fw;
2819 const struct b43_iv *ivals;
2820 size_t count;
2821
2822 hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2823 ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2824 count = be32_to_cpu(hdr->size);
2825 return b43_write_initvals(dev, ivals, count,
2826 fw->initvals.data->size - hdr_len);
2827 }
2828
b43_upload_initvals_band(struct b43_wldev * dev)2829 static int b43_upload_initvals_band(struct b43_wldev *dev)
2830 {
2831 const size_t hdr_len = sizeof(struct b43_fw_header);
2832 const struct b43_fw_header *hdr;
2833 struct b43_firmware *fw = &dev->fw;
2834 const struct b43_iv *ivals;
2835 size_t count;
2836
2837 if (!fw->initvals_band.data)
2838 return 0;
2839
2840 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2841 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2842 count = be32_to_cpu(hdr->size);
2843 return b43_write_initvals(dev, ivals, count,
2844 fw->initvals_band.data->size - hdr_len);
2845 }
2846
2847 /* Initialize the GPIOs
2848 * https://bcm-specs.sipsolutions.net/GPIO
2849 */
2850
2851 #ifdef CONFIG_B43_SSB
b43_ssb_gpio_dev(struct b43_wldev * dev)2852 static struct ssb_device *b43_ssb_gpio_dev(struct b43_wldev *dev)
2853 {
2854 struct ssb_bus *bus = dev->dev->sdev->bus;
2855
2856 #ifdef CONFIG_SSB_DRIVER_PCICORE
2857 return (bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev);
2858 #else
2859 return bus->chipco.dev;
2860 #endif
2861 }
2862 #endif
2863
b43_gpio_init(struct b43_wldev * dev)2864 static int b43_gpio_init(struct b43_wldev *dev)
2865 {
2866 #ifdef CONFIG_B43_SSB
2867 struct ssb_device *gpiodev;
2868 #endif
2869 u32 mask, set;
2870
2871 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_GPOUTSMSK, 0);
2872 b43_maskset16(dev, B43_MMIO_GPIO_MASK, ~0, 0xF);
2873
2874 mask = 0x0000001F;
2875 set = 0x0000000F;
2876 if (dev->dev->chip_id == 0x4301) {
2877 mask |= 0x0060;
2878 set |= 0x0060;
2879 } else if (dev->dev->chip_id == 0x5354) {
2880 /* Don't allow overtaking buttons GPIOs */
2881 set &= 0x2; /* 0x2 is LED GPIO on BCM5354 */
2882 }
2883
2884 if (0 /* FIXME: conditional unknown */ ) {
2885 b43_write16(dev, B43_MMIO_GPIO_MASK,
2886 b43_read16(dev, B43_MMIO_GPIO_MASK)
2887 | 0x0100);
2888 /* BT Coexistance Input */
2889 mask |= 0x0080;
2890 set |= 0x0080;
2891 /* BT Coexistance Out */
2892 mask |= 0x0100;
2893 set |= 0x0100;
2894 }
2895 if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL) {
2896 /* PA is controlled by gpio 9, let ucode handle it */
2897 b43_write16(dev, B43_MMIO_GPIO_MASK,
2898 b43_read16(dev, B43_MMIO_GPIO_MASK)
2899 | 0x0200);
2900 mask |= 0x0200;
2901 set |= 0x0200;
2902 }
2903
2904 switch (dev->dev->bus_type) {
2905 #ifdef CONFIG_B43_BCMA
2906 case B43_BUS_BCMA:
2907 bcma_chipco_gpio_control(&dev->dev->bdev->bus->drv_cc, mask, set);
2908 break;
2909 #endif
2910 #ifdef CONFIG_B43_SSB
2911 case B43_BUS_SSB:
2912 gpiodev = b43_ssb_gpio_dev(dev);
2913 if (gpiodev)
2914 ssb_write32(gpiodev, B43_GPIO_CONTROL,
2915 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2916 & ~mask) | set);
2917 break;
2918 #endif
2919 }
2920
2921 return 0;
2922 }
2923
2924 /* Turn off all GPIO stuff. Call this on module unload, for example. */
b43_gpio_cleanup(struct b43_wldev * dev)2925 static void b43_gpio_cleanup(struct b43_wldev *dev)
2926 {
2927 #ifdef CONFIG_B43_SSB
2928 struct ssb_device *gpiodev;
2929 #endif
2930
2931 switch (dev->dev->bus_type) {
2932 #ifdef CONFIG_B43_BCMA
2933 case B43_BUS_BCMA:
2934 bcma_chipco_gpio_control(&dev->dev->bdev->bus->drv_cc, ~0, 0);
2935 break;
2936 #endif
2937 #ifdef CONFIG_B43_SSB
2938 case B43_BUS_SSB:
2939 gpiodev = b43_ssb_gpio_dev(dev);
2940 if (gpiodev)
2941 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2942 break;
2943 #endif
2944 }
2945 }
2946
2947 /* http://bcm-specs.sipsolutions.net/EnableMac */
b43_mac_enable(struct b43_wldev * dev)2948 void b43_mac_enable(struct b43_wldev *dev)
2949 {
2950 if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2951 u16 fwstate;
2952
2953 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2954 B43_SHM_SH_UCODESTAT);
2955 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2956 (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2957 b43err(dev->wl, "b43_mac_enable(): The firmware "
2958 "should be suspended, but current state is %u\n",
2959 fwstate);
2960 }
2961 }
2962
2963 dev->mac_suspended--;
2964 B43_WARN_ON(dev->mac_suspended < 0);
2965 if (dev->mac_suspended == 0) {
2966 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_ENABLED);
2967 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2968 B43_IRQ_MAC_SUSPENDED);
2969 /* Commit writes */
2970 b43_read32(dev, B43_MMIO_MACCTL);
2971 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2972 b43_power_saving_ctl_bits(dev, 0);
2973 }
2974 }
2975
2976 /* https://bcm-specs.sipsolutions.net/SuspendMAC */
b43_mac_suspend(struct b43_wldev * dev)2977 void b43_mac_suspend(struct b43_wldev *dev)
2978 {
2979 int i;
2980 u32 tmp;
2981
2982 might_sleep();
2983 B43_WARN_ON(dev->mac_suspended < 0);
2984
2985 if (dev->mac_suspended == 0) {
2986 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2987 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_ENABLED, 0);
2988 /* force pci to flush the write */
2989 b43_read32(dev, B43_MMIO_MACCTL);
2990 for (i = 35; i; i--) {
2991 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2992 if (tmp & B43_IRQ_MAC_SUSPENDED)
2993 goto out;
2994 udelay(10);
2995 }
2996 /* Hm, it seems this will take some time. Use msleep(). */
2997 for (i = 40; i; i--) {
2998 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2999 if (tmp & B43_IRQ_MAC_SUSPENDED)
3000 goto out;
3001 msleep(1);
3002 }
3003 b43err(dev->wl, "MAC suspend failed\n");
3004 }
3005 out:
3006 dev->mac_suspended++;
3007 }
3008
3009 /* https://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
b43_mac_phy_clock_set(struct b43_wldev * dev,bool on)3010 void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
3011 {
3012 u32 tmp;
3013
3014 switch (dev->dev->bus_type) {
3015 #ifdef CONFIG_B43_BCMA
3016 case B43_BUS_BCMA:
3017 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
3018 if (on)
3019 tmp |= B43_BCMA_IOCTL_MACPHYCLKEN;
3020 else
3021 tmp &= ~B43_BCMA_IOCTL_MACPHYCLKEN;
3022 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
3023 break;
3024 #endif
3025 #ifdef CONFIG_B43_SSB
3026 case B43_BUS_SSB:
3027 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
3028 if (on)
3029 tmp |= B43_TMSLOW_MACPHYCLKEN;
3030 else
3031 tmp &= ~B43_TMSLOW_MACPHYCLKEN;
3032 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
3033 break;
3034 #endif
3035 }
3036 }
3037
3038 /* brcms_b_switch_macfreq */
b43_mac_switch_freq(struct b43_wldev * dev,u8 spurmode)3039 void b43_mac_switch_freq(struct b43_wldev *dev, u8 spurmode)
3040 {
3041 u16 chip_id = dev->dev->chip_id;
3042
3043 if (chip_id == BCMA_CHIP_ID_BCM4331) {
3044 switch (spurmode) {
3045 case 2: /* 168 Mhz: 2^26/168 = 0x61862 */
3046 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x1862);
3047 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6);
3048 break;
3049 case 1: /* 164 Mhz: 2^26/164 = 0x63e70 */
3050 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x3e70);
3051 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6);
3052 break;
3053 default: /* 160 Mhz: 2^26/160 = 0x66666 */
3054 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x6666);
3055 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x6);
3056 break;
3057 }
3058 } else if (chip_id == BCMA_CHIP_ID_BCM43131 ||
3059 chip_id == BCMA_CHIP_ID_BCM43217 ||
3060 chip_id == BCMA_CHIP_ID_BCM43222 ||
3061 chip_id == BCMA_CHIP_ID_BCM43224 ||
3062 chip_id == BCMA_CHIP_ID_BCM43225 ||
3063 chip_id == BCMA_CHIP_ID_BCM43227 ||
3064 chip_id == BCMA_CHIP_ID_BCM43228) {
3065 switch (spurmode) {
3066 case 2: /* 126 Mhz */
3067 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x2082);
3068 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
3069 break;
3070 case 1: /* 123 Mhz */
3071 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x5341);
3072 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
3073 break;
3074 default: /* 120 Mhz */
3075 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x8889);
3076 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
3077 break;
3078 }
3079 } else if (dev->phy.type == B43_PHYTYPE_LCN) {
3080 switch (spurmode) {
3081 case 1: /* 82 Mhz */
3082 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0x7CE0);
3083 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0xC);
3084 break;
3085 default: /* 80 Mhz */
3086 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, 0xCCCD);
3087 b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0xC);
3088 break;
3089 }
3090 }
3091 }
3092
b43_adjust_opmode(struct b43_wldev * dev)3093 static void b43_adjust_opmode(struct b43_wldev *dev)
3094 {
3095 struct b43_wl *wl = dev->wl;
3096 u32 ctl;
3097 u16 cfp_pretbtt;
3098
3099 ctl = b43_read32(dev, B43_MMIO_MACCTL);
3100 /* Reset status to STA infrastructure mode. */
3101 ctl &= ~B43_MACCTL_AP;
3102 ctl &= ~B43_MACCTL_KEEP_CTL;
3103 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
3104 ctl &= ~B43_MACCTL_KEEP_BAD;
3105 ctl &= ~B43_MACCTL_PROMISC;
3106 ctl &= ~B43_MACCTL_BEACPROMISC;
3107 ctl |= B43_MACCTL_INFRA;
3108
3109 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3110 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
3111 ctl |= B43_MACCTL_AP;
3112 else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
3113 ctl &= ~B43_MACCTL_INFRA;
3114
3115 if (wl->filter_flags & FIF_CONTROL)
3116 ctl |= B43_MACCTL_KEEP_CTL;
3117 if (wl->filter_flags & FIF_FCSFAIL)
3118 ctl |= B43_MACCTL_KEEP_BAD;
3119 if (wl->filter_flags & FIF_PLCPFAIL)
3120 ctl |= B43_MACCTL_KEEP_BADPLCP;
3121 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
3122 ctl |= B43_MACCTL_BEACPROMISC;
3123
3124 /* Workaround: On old hardware the HW-MAC-address-filter
3125 * doesn't work properly, so always run promisc in filter
3126 * it in software. */
3127 if (dev->dev->core_rev <= 4)
3128 ctl |= B43_MACCTL_PROMISC;
3129
3130 b43_write32(dev, B43_MMIO_MACCTL, ctl);
3131
3132 cfp_pretbtt = 2;
3133 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
3134 if (dev->dev->chip_id == 0x4306 &&
3135 dev->dev->chip_rev == 3)
3136 cfp_pretbtt = 100;
3137 else
3138 cfp_pretbtt = 50;
3139 }
3140 b43_write16(dev, 0x612, cfp_pretbtt);
3141
3142 /* FIXME: We don't currently implement the PMQ mechanism,
3143 * so always disable it. If we want to implement PMQ,
3144 * we need to enable it here (clear DISCPMQ) in AP mode.
3145 */
3146 if (0 /* ctl & B43_MACCTL_AP */)
3147 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_DISCPMQ, 0);
3148 else
3149 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_DISCPMQ);
3150 }
3151
b43_rate_memory_write(struct b43_wldev * dev,u16 rate,int is_ofdm)3152 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
3153 {
3154 u16 offset;
3155
3156 if (is_ofdm) {
3157 offset = 0x480;
3158 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
3159 } else {
3160 offset = 0x4C0;
3161 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
3162 }
3163 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
3164 b43_shm_read16(dev, B43_SHM_SHARED, offset));
3165 }
3166
b43_rate_memory_init(struct b43_wldev * dev)3167 static void b43_rate_memory_init(struct b43_wldev *dev)
3168 {
3169 switch (dev->phy.type) {
3170 case B43_PHYTYPE_G:
3171 case B43_PHYTYPE_N:
3172 case B43_PHYTYPE_LP:
3173 case B43_PHYTYPE_HT:
3174 case B43_PHYTYPE_LCN:
3175 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
3176 b43_rate_memory_write(dev, B43_OFDM_RATE_9MB, 1);
3177 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
3178 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
3179 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
3180 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
3181 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
3182 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
3183 fallthrough;
3184 case B43_PHYTYPE_B:
3185 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
3186 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
3187 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
3188 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
3189 break;
3190 default:
3191 B43_WARN_ON(1);
3192 }
3193 }
3194
3195 /* Set the default values for the PHY TX Control Words. */
b43_set_phytxctl_defaults(struct b43_wldev * dev)3196 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
3197 {
3198 u16 ctl = 0;
3199
3200 ctl |= B43_TXH_PHY_ENC_CCK;
3201 ctl |= B43_TXH_PHY_ANT01AUTO;
3202 ctl |= B43_TXH_PHY_TXPWR;
3203
3204 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
3205 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
3206 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
3207 }
3208
3209 /* Set the TX-Antenna for management frames sent by firmware. */
b43_mgmtframe_txantenna(struct b43_wldev * dev,int antenna)3210 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
3211 {
3212 u16 ant;
3213 u16 tmp;
3214
3215 ant = b43_antenna_to_phyctl(antenna);
3216
3217 /* For ACK/CTS */
3218 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
3219 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
3220 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
3221 /* For Probe Resposes */
3222 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
3223 tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
3224 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
3225 }
3226
3227 /* This is the opposite of b43_chip_init() */
b43_chip_exit(struct b43_wldev * dev)3228 static void b43_chip_exit(struct b43_wldev *dev)
3229 {
3230 b43_phy_exit(dev);
3231 b43_gpio_cleanup(dev);
3232 /* firmware is released later */
3233 }
3234
3235 /* Initialize the chip
3236 * https://bcm-specs.sipsolutions.net/ChipInit
3237 */
b43_chip_init(struct b43_wldev * dev)3238 static int b43_chip_init(struct b43_wldev *dev)
3239 {
3240 struct b43_phy *phy = &dev->phy;
3241 int err;
3242 u32 macctl;
3243 u16 value16;
3244
3245 /* Initialize the MAC control */
3246 macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
3247 if (dev->phy.gmode)
3248 macctl |= B43_MACCTL_GMODE;
3249 macctl |= B43_MACCTL_INFRA;
3250 b43_write32(dev, B43_MMIO_MACCTL, macctl);
3251
3252 err = b43_upload_microcode(dev);
3253 if (err)
3254 goto out; /* firmware is released later */
3255
3256 err = b43_gpio_init(dev);
3257 if (err)
3258 goto out; /* firmware is released later */
3259
3260 err = b43_upload_initvals(dev);
3261 if (err)
3262 goto err_gpio_clean;
3263
3264 err = b43_upload_initvals_band(dev);
3265 if (err)
3266 goto err_gpio_clean;
3267
3268 /* Turn the Analog on and initialize the PHY. */
3269 phy->ops->switch_analog(dev, 1);
3270 err = b43_phy_init(dev);
3271 if (err)
3272 goto err_gpio_clean;
3273
3274 /* Disable Interference Mitigation. */
3275 if (phy->ops->interf_mitigation)
3276 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
3277
3278 /* Select the antennae */
3279 if (phy->ops->set_rx_antenna)
3280 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
3281 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
3282
3283 if (phy->type == B43_PHYTYPE_B) {
3284 value16 = b43_read16(dev, 0x005E);
3285 value16 |= 0x0004;
3286 b43_write16(dev, 0x005E, value16);
3287 }
3288 b43_write32(dev, 0x0100, 0x01000000);
3289 if (dev->dev->core_rev < 5)
3290 b43_write32(dev, 0x010C, 0x01000000);
3291
3292 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_INFRA, 0);
3293 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_INFRA);
3294
3295 /* Probe Response Timeout value */
3296 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
3297 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 0);
3298
3299 /* Initially set the wireless operation mode. */
3300 b43_adjust_opmode(dev);
3301
3302 if (dev->dev->core_rev < 3) {
3303 b43_write16(dev, 0x060E, 0x0000);
3304 b43_write16(dev, 0x0610, 0x8000);
3305 b43_write16(dev, 0x0604, 0x0000);
3306 b43_write16(dev, 0x0606, 0x0200);
3307 } else {
3308 b43_write32(dev, 0x0188, 0x80000000);
3309 b43_write32(dev, 0x018C, 0x02000000);
3310 }
3311 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
3312 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001FC00);
3313 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
3314 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
3315 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
3316 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
3317 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
3318
3319 b43_mac_phy_clock_set(dev, true);
3320
3321 switch (dev->dev->bus_type) {
3322 #ifdef CONFIG_B43_BCMA
3323 case B43_BUS_BCMA:
3324 /* FIXME: 0xE74 is quite common, but should be read from CC */
3325 b43_write16(dev, B43_MMIO_POWERUP_DELAY, 0xE74);
3326 break;
3327 #endif
3328 #ifdef CONFIG_B43_SSB
3329 case B43_BUS_SSB:
3330 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
3331 dev->dev->sdev->bus->chipco.fast_pwrup_delay);
3332 break;
3333 #endif
3334 }
3335
3336 err = 0;
3337 b43dbg(dev->wl, "Chip initialized\n");
3338 out:
3339 return err;
3340
3341 err_gpio_clean:
3342 b43_gpio_cleanup(dev);
3343 return err;
3344 }
3345
b43_periodic_every60sec(struct b43_wldev * dev)3346 static void b43_periodic_every60sec(struct b43_wldev *dev)
3347 {
3348 const struct b43_phy_operations *ops = dev->phy.ops;
3349
3350 if (ops->pwork_60sec)
3351 ops->pwork_60sec(dev);
3352
3353 /* Force check the TX power emission now. */
3354 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
3355 }
3356
b43_periodic_every30sec(struct b43_wldev * dev)3357 static void b43_periodic_every30sec(struct b43_wldev *dev)
3358 {
3359 /* Update device statistics. */
3360 b43_calculate_link_quality(dev);
3361 }
3362
b43_periodic_every15sec(struct b43_wldev * dev)3363 static void b43_periodic_every15sec(struct b43_wldev *dev)
3364 {
3365 struct b43_phy *phy = &dev->phy;
3366 u16 wdr;
3367
3368 if (dev->fw.opensource) {
3369 /* Check if the firmware is still alive.
3370 * It will reset the watchdog counter to 0 in its idle loop. */
3371 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
3372 if (unlikely(wdr)) {
3373 b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
3374 b43_controller_restart(dev, "Firmware watchdog");
3375 return;
3376 } else {
3377 b43_shm_write16(dev, B43_SHM_SCRATCH,
3378 B43_WATCHDOG_REG, 1);
3379 }
3380 }
3381
3382 if (phy->ops->pwork_15sec)
3383 phy->ops->pwork_15sec(dev);
3384
3385 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3386 wmb();
3387
3388 #if B43_DEBUG
3389 if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
3390 unsigned int i;
3391
3392 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
3393 dev->irq_count / 15,
3394 dev->tx_count / 15,
3395 dev->rx_count / 15);
3396 dev->irq_count = 0;
3397 dev->tx_count = 0;
3398 dev->rx_count = 0;
3399 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
3400 if (dev->irq_bit_count[i]) {
3401 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
3402 dev->irq_bit_count[i] / 15, i, (1 << i));
3403 dev->irq_bit_count[i] = 0;
3404 }
3405 }
3406 }
3407 #endif
3408 }
3409
do_periodic_work(struct b43_wldev * dev)3410 static void do_periodic_work(struct b43_wldev *dev)
3411 {
3412 unsigned int state;
3413
3414 state = dev->periodic_state;
3415 if (state % 4 == 0)
3416 b43_periodic_every60sec(dev);
3417 if (state % 2 == 0)
3418 b43_periodic_every30sec(dev);
3419 b43_periodic_every15sec(dev);
3420 }
3421
3422 /* Periodic work locking policy:
3423 * The whole periodic work handler is protected by
3424 * wl->mutex. If another lock is needed somewhere in the
3425 * pwork callchain, it's acquired in-place, where it's needed.
3426 */
b43_periodic_work_handler(struct work_struct * work)3427 static void b43_periodic_work_handler(struct work_struct *work)
3428 {
3429 struct b43_wldev *dev = container_of(work, struct b43_wldev,
3430 periodic_work.work);
3431 struct b43_wl *wl = dev->wl;
3432 unsigned long delay;
3433
3434 mutex_lock(&wl->mutex);
3435
3436 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
3437 goto out;
3438 if (b43_debug(dev, B43_DBG_PWORK_STOP))
3439 goto out_requeue;
3440
3441 do_periodic_work(dev);
3442
3443 dev->periodic_state++;
3444 out_requeue:
3445 if (b43_debug(dev, B43_DBG_PWORK_FAST))
3446 delay = msecs_to_jiffies(50);
3447 else
3448 delay = round_jiffies_relative(HZ * 15);
3449 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
3450 out:
3451 mutex_unlock(&wl->mutex);
3452 }
3453
b43_periodic_tasks_setup(struct b43_wldev * dev)3454 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3455 {
3456 struct delayed_work *work = &dev->periodic_work;
3457
3458 dev->periodic_state = 0;
3459 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3460 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3461 }
3462
3463 /* Check if communication with the device works correctly. */
b43_validate_chipaccess(struct b43_wldev * dev)3464 static int b43_validate_chipaccess(struct b43_wldev *dev)
3465 {
3466 u32 v, backup0, backup4;
3467
3468 backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3469 backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3470
3471 /* Check for read/write and endianness problems. */
3472 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3473 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3474 goto error;
3475 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3476 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3477 goto error;
3478
3479 /* Check if unaligned 32bit SHM_SHARED access works properly.
3480 * However, don't bail out on failure, because it's noncritical. */
3481 b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3482 b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3483 b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3484 b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3485 if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3486 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3487 b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3488 if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3489 b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3490 b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3491 b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3492 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3493
3494 b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3495 b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3496
3497 if ((dev->dev->core_rev >= 3) && (dev->dev->core_rev <= 10)) {
3498 /* The 32bit register shadows the two 16bit registers
3499 * with update sideeffects. Validate this. */
3500 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3501 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3502 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3503 goto error;
3504 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3505 goto error;
3506 }
3507 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3508
3509 v = b43_read32(dev, B43_MMIO_MACCTL);
3510 v |= B43_MACCTL_GMODE;
3511 if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3512 goto error;
3513
3514 return 0;
3515 error:
3516 b43err(dev->wl, "Failed to validate the chipaccess\n");
3517 return -ENODEV;
3518 }
3519
b43_security_init(struct b43_wldev * dev)3520 static void b43_security_init(struct b43_wldev *dev)
3521 {
3522 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3523 /* KTP is a word address, but we address SHM bytewise.
3524 * So multiply by two.
3525 */
3526 dev->ktp *= 2;
3527 /* Number of RCMTA address slots */
3528 b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3529 /* Clear the key memory. */
3530 b43_clear_keys(dev);
3531 }
3532
3533 #ifdef CONFIG_B43_HWRNG
b43_rng_read(struct hwrng * rng,u32 * data)3534 static int b43_rng_read(struct hwrng *rng, u32 *data)
3535 {
3536 struct b43_wl *wl = (struct b43_wl *)rng->priv;
3537 struct b43_wldev *dev;
3538 int count = -ENODEV;
3539
3540 mutex_lock(&wl->mutex);
3541 dev = wl->current_dev;
3542 if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3543 *data = b43_read16(dev, B43_MMIO_RNG);
3544 count = sizeof(u16);
3545 }
3546 mutex_unlock(&wl->mutex);
3547
3548 return count;
3549 }
3550 #endif /* CONFIG_B43_HWRNG */
3551
b43_rng_exit(struct b43_wl * wl)3552 static void b43_rng_exit(struct b43_wl *wl)
3553 {
3554 #ifdef CONFIG_B43_HWRNG
3555 if (wl->rng_initialized)
3556 hwrng_unregister(&wl->rng);
3557 #endif /* CONFIG_B43_HWRNG */
3558 }
3559
b43_rng_init(struct b43_wl * wl)3560 static int b43_rng_init(struct b43_wl *wl)
3561 {
3562 int err = 0;
3563
3564 #ifdef CONFIG_B43_HWRNG
3565 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3566 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3567 wl->rng.name = wl->rng_name;
3568 wl->rng.data_read = b43_rng_read;
3569 wl->rng.priv = (unsigned long)wl;
3570 wl->rng_initialized = true;
3571 err = hwrng_register(&wl->rng);
3572 if (err) {
3573 wl->rng_initialized = false;
3574 b43err(wl, "Failed to register the random "
3575 "number generator (%d)\n", err);
3576 }
3577 #endif /* CONFIG_B43_HWRNG */
3578
3579 return err;
3580 }
3581
b43_tx_work(struct work_struct * work)3582 static void b43_tx_work(struct work_struct *work)
3583 {
3584 struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3585 struct b43_wldev *dev;
3586 struct sk_buff *skb;
3587 int queue_num;
3588 int err = 0;
3589
3590 mutex_lock(&wl->mutex);
3591 dev = wl->current_dev;
3592 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3593 mutex_unlock(&wl->mutex);
3594 return;
3595 }
3596
3597 for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
3598 while (skb_queue_len(&wl->tx_queue[queue_num])) {
3599 skb = skb_dequeue(&wl->tx_queue[queue_num]);
3600 if (b43_using_pio_transfers(dev))
3601 err = b43_pio_tx(dev, skb);
3602 else
3603 err = b43_dma_tx(dev, skb);
3604 if (err == -ENOSPC) {
3605 wl->tx_queue_stopped[queue_num] = true;
3606 ieee80211_stop_queue(wl->hw, queue_num);
3607 skb_queue_head(&wl->tx_queue[queue_num], skb);
3608 break;
3609 }
3610 if (unlikely(err))
3611 ieee80211_free_txskb(wl->hw, skb);
3612 err = 0;
3613 }
3614
3615 if (!err)
3616 wl->tx_queue_stopped[queue_num] = false;
3617 }
3618
3619 #if B43_DEBUG
3620 dev->tx_count++;
3621 #endif
3622 mutex_unlock(&wl->mutex);
3623 }
3624
b43_op_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)3625 static void b43_op_tx(struct ieee80211_hw *hw,
3626 struct ieee80211_tx_control *control,
3627 struct sk_buff *skb)
3628 {
3629 struct b43_wl *wl = hw_to_b43_wl(hw);
3630
3631 if (unlikely(skb->len < 2 + 2 + 6)) {
3632 /* Too short, this can't be a valid frame. */
3633 ieee80211_free_txskb(hw, skb);
3634 return;
3635 }
3636 B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3637
3638 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
3639 if (!wl->tx_queue_stopped[skb->queue_mapping]) {
3640 ieee80211_queue_work(wl->hw, &wl->tx_work);
3641 } else {
3642 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
3643 }
3644 }
3645
b43_qos_params_upload(struct b43_wldev * dev,const struct ieee80211_tx_queue_params * p,u16 shm_offset)3646 static void b43_qos_params_upload(struct b43_wldev *dev,
3647 const struct ieee80211_tx_queue_params *p,
3648 u16 shm_offset)
3649 {
3650 u16 params[B43_NR_QOSPARAMS];
3651 int bslots, tmp;
3652 unsigned int i;
3653
3654 if (!dev->qos_enabled)
3655 return;
3656
3657 bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3658
3659 memset(¶ms, 0, sizeof(params));
3660
3661 params[B43_QOSPARAM_TXOP] = p->txop * 32;
3662 params[B43_QOSPARAM_CWMIN] = p->cw_min;
3663 params[B43_QOSPARAM_CWMAX] = p->cw_max;
3664 params[B43_QOSPARAM_CWCUR] = p->cw_min;
3665 params[B43_QOSPARAM_AIFS] = p->aifs;
3666 params[B43_QOSPARAM_BSLOTS] = bslots;
3667 params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3668
3669 for (i = 0; i < ARRAY_SIZE(params); i++) {
3670 if (i == B43_QOSPARAM_STATUS) {
3671 tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3672 shm_offset + (i * 2));
3673 /* Mark the parameters as updated. */
3674 tmp |= 0x100;
3675 b43_shm_write16(dev, B43_SHM_SHARED,
3676 shm_offset + (i * 2),
3677 tmp);
3678 } else {
3679 b43_shm_write16(dev, B43_SHM_SHARED,
3680 shm_offset + (i * 2),
3681 params[i]);
3682 }
3683 }
3684 }
3685
3686 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3687 static const u16 b43_qos_shm_offsets[] = {
3688 /* [mac80211-queue-nr] = SHM_OFFSET, */
3689 [0] = B43_QOS_VOICE,
3690 [1] = B43_QOS_VIDEO,
3691 [2] = B43_QOS_BESTEFFORT,
3692 [3] = B43_QOS_BACKGROUND,
3693 };
3694
3695 /* Update all QOS parameters in hardware. */
b43_qos_upload_all(struct b43_wldev * dev)3696 static void b43_qos_upload_all(struct b43_wldev *dev)
3697 {
3698 struct b43_wl *wl = dev->wl;
3699 struct b43_qos_params *params;
3700 unsigned int i;
3701
3702 if (!dev->qos_enabled)
3703 return;
3704
3705 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3706 ARRAY_SIZE(wl->qos_params));
3707
3708 b43_mac_suspend(dev);
3709 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3710 params = &(wl->qos_params[i]);
3711 b43_qos_params_upload(dev, &(params->p),
3712 b43_qos_shm_offsets[i]);
3713 }
3714 b43_mac_enable(dev);
3715 }
3716
b43_qos_clear(struct b43_wl * wl)3717 static void b43_qos_clear(struct b43_wl *wl)
3718 {
3719 struct b43_qos_params *params;
3720 unsigned int i;
3721
3722 /* Initialize QoS parameters to sane defaults. */
3723
3724 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3725 ARRAY_SIZE(wl->qos_params));
3726
3727 for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3728 params = &(wl->qos_params[i]);
3729
3730 switch (b43_qos_shm_offsets[i]) {
3731 case B43_QOS_VOICE:
3732 params->p.txop = 0;
3733 params->p.aifs = 2;
3734 params->p.cw_min = 0x0001;
3735 params->p.cw_max = 0x0001;
3736 break;
3737 case B43_QOS_VIDEO:
3738 params->p.txop = 0;
3739 params->p.aifs = 2;
3740 params->p.cw_min = 0x0001;
3741 params->p.cw_max = 0x0001;
3742 break;
3743 case B43_QOS_BESTEFFORT:
3744 params->p.txop = 0;
3745 params->p.aifs = 3;
3746 params->p.cw_min = 0x0001;
3747 params->p.cw_max = 0x03FF;
3748 break;
3749 case B43_QOS_BACKGROUND:
3750 params->p.txop = 0;
3751 params->p.aifs = 7;
3752 params->p.cw_min = 0x0001;
3753 params->p.cw_max = 0x03FF;
3754 break;
3755 default:
3756 B43_WARN_ON(1);
3757 }
3758 }
3759 }
3760
3761 /* Initialize the core's QOS capabilities */
b43_qos_init(struct b43_wldev * dev)3762 static void b43_qos_init(struct b43_wldev *dev)
3763 {
3764 if (!dev->qos_enabled) {
3765 /* Disable QOS support. */
3766 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3767 b43_write16(dev, B43_MMIO_IFSCTL,
3768 b43_read16(dev, B43_MMIO_IFSCTL)
3769 & ~B43_MMIO_IFSCTL_USE_EDCF);
3770 b43dbg(dev->wl, "QoS disabled\n");
3771 return;
3772 }
3773
3774 /* Upload the current QOS parameters. */
3775 b43_qos_upload_all(dev);
3776
3777 /* Enable QOS support. */
3778 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3779 b43_write16(dev, B43_MMIO_IFSCTL,
3780 b43_read16(dev, B43_MMIO_IFSCTL)
3781 | B43_MMIO_IFSCTL_USE_EDCF);
3782 b43dbg(dev->wl, "QoS enabled\n");
3783 }
3784
b43_op_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int link_id,u16 _queue,const struct ieee80211_tx_queue_params * params)3785 static int b43_op_conf_tx(struct ieee80211_hw *hw,
3786 struct ieee80211_vif *vif,
3787 unsigned int link_id, u16 _queue,
3788 const struct ieee80211_tx_queue_params *params)
3789 {
3790 struct b43_wl *wl = hw_to_b43_wl(hw);
3791 struct b43_wldev *dev;
3792 unsigned int queue = (unsigned int)_queue;
3793 int err = -ENODEV;
3794
3795 if (queue >= ARRAY_SIZE(wl->qos_params)) {
3796 /* Queue not available or don't support setting
3797 * params on this queue. Return success to not
3798 * confuse mac80211. */
3799 return 0;
3800 }
3801 BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3802 ARRAY_SIZE(wl->qos_params));
3803
3804 mutex_lock(&wl->mutex);
3805 dev = wl->current_dev;
3806 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3807 goto out_unlock;
3808
3809 memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3810 b43_mac_suspend(dev);
3811 b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3812 b43_qos_shm_offsets[queue]);
3813 b43_mac_enable(dev);
3814 err = 0;
3815
3816 out_unlock:
3817 mutex_unlock(&wl->mutex);
3818
3819 return err;
3820 }
3821
b43_op_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)3822 static int b43_op_get_stats(struct ieee80211_hw *hw,
3823 struct ieee80211_low_level_stats *stats)
3824 {
3825 struct b43_wl *wl = hw_to_b43_wl(hw);
3826
3827 mutex_lock(&wl->mutex);
3828 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3829 mutex_unlock(&wl->mutex);
3830
3831 return 0;
3832 }
3833
b43_op_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3834 static u64 b43_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
3835 {
3836 struct b43_wl *wl = hw_to_b43_wl(hw);
3837 struct b43_wldev *dev;
3838 u64 tsf;
3839
3840 mutex_lock(&wl->mutex);
3841 dev = wl->current_dev;
3842
3843 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3844 b43_tsf_read(dev, &tsf);
3845 else
3846 tsf = 0;
3847
3848 mutex_unlock(&wl->mutex);
3849
3850 return tsf;
3851 }
3852
b43_op_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)3853 static void b43_op_set_tsf(struct ieee80211_hw *hw,
3854 struct ieee80211_vif *vif, u64 tsf)
3855 {
3856 struct b43_wl *wl = hw_to_b43_wl(hw);
3857 struct b43_wldev *dev;
3858
3859 mutex_lock(&wl->mutex);
3860 dev = wl->current_dev;
3861
3862 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3863 b43_tsf_write(dev, tsf);
3864
3865 mutex_unlock(&wl->mutex);
3866 }
3867
band_to_string(enum nl80211_band band)3868 static const char *band_to_string(enum nl80211_band band)
3869 {
3870 switch (band) {
3871 case NL80211_BAND_5GHZ:
3872 return "5";
3873 case NL80211_BAND_2GHZ:
3874 return "2.4";
3875 default:
3876 break;
3877 }
3878 B43_WARN_ON(1);
3879 return "";
3880 }
3881
3882 /* Expects wl->mutex locked */
b43_switch_band(struct b43_wldev * dev,struct ieee80211_channel * chan)3883 static int b43_switch_band(struct b43_wldev *dev,
3884 struct ieee80211_channel *chan)
3885 {
3886 struct b43_phy *phy = &dev->phy;
3887 bool gmode;
3888 u32 tmp;
3889
3890 switch (chan->band) {
3891 case NL80211_BAND_5GHZ:
3892 gmode = false;
3893 break;
3894 case NL80211_BAND_2GHZ:
3895 gmode = true;
3896 break;
3897 default:
3898 B43_WARN_ON(1);
3899 return -EINVAL;
3900 }
3901
3902 if (!((gmode && phy->supports_2ghz) ||
3903 (!gmode && phy->supports_5ghz))) {
3904 b43err(dev->wl, "This device doesn't support %s-GHz band\n",
3905 band_to_string(chan->band));
3906 return -ENODEV;
3907 }
3908
3909 if (!!phy->gmode == !!gmode) {
3910 /* This device is already running. */
3911 return 0;
3912 }
3913
3914 b43dbg(dev->wl, "Switching to %s GHz band\n",
3915 band_to_string(chan->band));
3916
3917 /* Some new devices don't need disabling radio for band switching */
3918 if (!(phy->type == B43_PHYTYPE_N && phy->rev >= 3))
3919 b43_software_rfkill(dev, true);
3920
3921 phy->gmode = gmode;
3922 b43_phy_put_into_reset(dev);
3923 switch (dev->dev->bus_type) {
3924 #ifdef CONFIG_B43_BCMA
3925 case B43_BUS_BCMA:
3926 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
3927 if (gmode)
3928 tmp |= B43_BCMA_IOCTL_GMODE;
3929 else
3930 tmp &= ~B43_BCMA_IOCTL_GMODE;
3931 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
3932 break;
3933 #endif
3934 #ifdef CONFIG_B43_SSB
3935 case B43_BUS_SSB:
3936 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
3937 if (gmode)
3938 tmp |= B43_TMSLOW_GMODE;
3939 else
3940 tmp &= ~B43_TMSLOW_GMODE;
3941 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
3942 break;
3943 #endif
3944 }
3945 b43_phy_take_out_of_reset(dev);
3946
3947 b43_upload_initvals_band(dev);
3948
3949 b43_phy_init(dev);
3950
3951 return 0;
3952 }
3953
b43_set_beacon_listen_interval(struct b43_wldev * dev,u16 interval)3954 static void b43_set_beacon_listen_interval(struct b43_wldev *dev, u16 interval)
3955 {
3956 interval = min_t(u16, interval, (u16)0xFF);
3957 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BCN_LI, interval);
3958 }
3959
3960 /* Write the short and long frame retry limit values. */
b43_set_retry_limits(struct b43_wldev * dev,unsigned int short_retry,unsigned int long_retry)3961 static void b43_set_retry_limits(struct b43_wldev *dev,
3962 unsigned int short_retry,
3963 unsigned int long_retry)
3964 {
3965 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3966 * the chip-internal counter. */
3967 short_retry = min(short_retry, (unsigned int)0xF);
3968 long_retry = min(long_retry, (unsigned int)0xF);
3969
3970 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3971 short_retry);
3972 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3973 long_retry);
3974 }
3975
b43_op_config(struct ieee80211_hw * hw,u32 changed)3976 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3977 {
3978 struct b43_wl *wl = hw_to_b43_wl(hw);
3979 struct b43_wldev *dev = wl->current_dev;
3980 struct b43_phy *phy = &dev->phy;
3981 struct ieee80211_conf *conf = &hw->conf;
3982 int antenna;
3983 int err = 0;
3984
3985 mutex_lock(&wl->mutex);
3986 b43_mac_suspend(dev);
3987
3988 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL)
3989 b43_set_beacon_listen_interval(dev, conf->listen_interval);
3990
3991 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
3992 phy->chandef = &conf->chandef;
3993 phy->channel = conf->chandef.chan->hw_value;
3994
3995 /* Switch the band (if necessary). */
3996 err = b43_switch_band(dev, conf->chandef.chan);
3997 if (err)
3998 goto out_mac_enable;
3999
4000 /* Switch to the requested channel.
4001 * The firmware takes care of races with the TX handler.
4002 */
4003 b43_switch_channel(dev, phy->channel);
4004 }
4005
4006 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
4007 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
4008 conf->long_frame_max_tx_count);
4009 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
4010 if (!changed)
4011 goto out_mac_enable;
4012
4013 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
4014
4015 /* Adjust the desired TX power level. */
4016 if (conf->power_level != 0) {
4017 if (conf->power_level != phy->desired_txpower) {
4018 phy->desired_txpower = conf->power_level;
4019 b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
4020 B43_TXPWR_IGNORE_TSSI);
4021 }
4022 }
4023
4024 /* Antennas for RX and management frame TX. */
4025 antenna = B43_ANTENNA_DEFAULT;
4026 b43_mgmtframe_txantenna(dev, antenna);
4027 antenna = B43_ANTENNA_DEFAULT;
4028 if (phy->ops->set_rx_antenna)
4029 phy->ops->set_rx_antenna(dev, antenna);
4030
4031 if (wl->radio_enabled != phy->radio_on) {
4032 if (wl->radio_enabled) {
4033 b43_software_rfkill(dev, false);
4034 b43info(dev->wl, "Radio turned on by software\n");
4035 if (!dev->radio_hw_enable) {
4036 b43info(dev->wl, "The hardware RF-kill button "
4037 "still turns the radio physically off. "
4038 "Press the button to turn it on.\n");
4039 }
4040 } else {
4041 b43_software_rfkill(dev, true);
4042 b43info(dev->wl, "Radio turned off by software\n");
4043 }
4044 }
4045
4046 out_mac_enable:
4047 b43_mac_enable(dev);
4048 mutex_unlock(&wl->mutex);
4049
4050 return err;
4051 }
4052
b43_update_basic_rates(struct b43_wldev * dev,u32 brates)4053 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
4054 {
4055 struct ieee80211_supported_band *sband =
4056 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
4057 const struct ieee80211_rate *rate;
4058 int i;
4059 u16 basic, direct, offset, basic_offset, rateptr;
4060
4061 for (i = 0; i < sband->n_bitrates; i++) {
4062 rate = &sband->bitrates[i];
4063
4064 if (b43_is_cck_rate(rate->hw_value)) {
4065 direct = B43_SHM_SH_CCKDIRECT;
4066 basic = B43_SHM_SH_CCKBASIC;
4067 offset = b43_plcp_get_ratecode_cck(rate->hw_value);
4068 offset &= 0xF;
4069 } else {
4070 direct = B43_SHM_SH_OFDMDIRECT;
4071 basic = B43_SHM_SH_OFDMBASIC;
4072 offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
4073 offset &= 0xF;
4074 }
4075
4076 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
4077
4078 if (b43_is_cck_rate(rate->hw_value)) {
4079 basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
4080 basic_offset &= 0xF;
4081 } else {
4082 basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
4083 basic_offset &= 0xF;
4084 }
4085
4086 /*
4087 * Get the pointer that we need to point to
4088 * from the direct map
4089 */
4090 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
4091 direct + 2 * basic_offset);
4092 /* and write it to the basic map */
4093 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
4094 rateptr);
4095 }
4096 }
4097
b43_op_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * conf,u64 changed)4098 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
4099 struct ieee80211_vif *vif,
4100 struct ieee80211_bss_conf *conf,
4101 u64 changed)
4102 {
4103 struct b43_wl *wl = hw_to_b43_wl(hw);
4104 struct b43_wldev *dev;
4105
4106 mutex_lock(&wl->mutex);
4107
4108 dev = wl->current_dev;
4109 if (!dev || b43_status(dev) < B43_STAT_STARTED)
4110 goto out_unlock_mutex;
4111
4112 B43_WARN_ON(wl->vif != vif);
4113
4114 if (changed & BSS_CHANGED_BSSID) {
4115 if (conf->bssid)
4116 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
4117 else
4118 eth_zero_addr(wl->bssid);
4119 }
4120
4121 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
4122 if (changed & BSS_CHANGED_BEACON &&
4123 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
4124 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
4125 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
4126 b43_update_templates(wl);
4127
4128 if (changed & BSS_CHANGED_BSSID)
4129 b43_write_mac_bssid_templates(dev);
4130 }
4131
4132 b43_mac_suspend(dev);
4133
4134 /* Update templates for AP/mesh mode. */
4135 if (changed & BSS_CHANGED_BEACON_INT &&
4136 (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
4137 b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
4138 b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) &&
4139 conf->beacon_int)
4140 b43_set_beacon_int(dev, conf->beacon_int);
4141
4142 if (changed & BSS_CHANGED_BASIC_RATES)
4143 b43_update_basic_rates(dev, conf->basic_rates);
4144
4145 if (changed & BSS_CHANGED_ERP_SLOT) {
4146 if (conf->use_short_slot)
4147 b43_short_slot_timing_enable(dev);
4148 else
4149 b43_short_slot_timing_disable(dev);
4150 }
4151
4152 b43_mac_enable(dev);
4153 out_unlock_mutex:
4154 mutex_unlock(&wl->mutex);
4155 }
4156
b43_op_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)4157 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4158 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
4159 struct ieee80211_key_conf *key)
4160 {
4161 struct b43_wl *wl = hw_to_b43_wl(hw);
4162 struct b43_wldev *dev;
4163 u8 algorithm;
4164 u8 index;
4165 int err;
4166 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
4167
4168 if (modparam_nohwcrypt)
4169 return -ENOSPC; /* User disabled HW-crypto */
4170
4171 if ((vif->type == NL80211_IFTYPE_ADHOC ||
4172 vif->type == NL80211_IFTYPE_MESH_POINT) &&
4173 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
4174 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
4175 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
4176 /*
4177 * For now, disable hw crypto for the RSN IBSS group keys. This
4178 * could be optimized in the future, but until that gets
4179 * implemented, use of software crypto for group addressed
4180 * frames is a acceptable to allow RSN IBSS to be used.
4181 */
4182 return -EOPNOTSUPP;
4183 }
4184
4185 mutex_lock(&wl->mutex);
4186
4187 dev = wl->current_dev;
4188 err = -ENODEV;
4189 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
4190 goto out_unlock;
4191
4192 if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
4193 /* We don't have firmware for the crypto engine.
4194 * Must use software-crypto. */
4195 err = -EOPNOTSUPP;
4196 goto out_unlock;
4197 }
4198
4199 err = -EINVAL;
4200 switch (key->cipher) {
4201 case WLAN_CIPHER_SUITE_WEP40:
4202 algorithm = B43_SEC_ALGO_WEP40;
4203 break;
4204 case WLAN_CIPHER_SUITE_WEP104:
4205 algorithm = B43_SEC_ALGO_WEP104;
4206 break;
4207 case WLAN_CIPHER_SUITE_TKIP:
4208 algorithm = B43_SEC_ALGO_TKIP;
4209 break;
4210 case WLAN_CIPHER_SUITE_CCMP:
4211 algorithm = B43_SEC_ALGO_AES;
4212 break;
4213 default:
4214 B43_WARN_ON(1);
4215 goto out_unlock;
4216 }
4217 index = (u8) (key->keyidx);
4218 if (index > 3)
4219 goto out_unlock;
4220
4221 switch (cmd) {
4222 case SET_KEY:
4223 if (algorithm == B43_SEC_ALGO_TKIP &&
4224 (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
4225 !modparam_hwtkip)) {
4226 /* We support only pairwise key */
4227 err = -EOPNOTSUPP;
4228 goto out_unlock;
4229 }
4230
4231 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
4232 if (WARN_ON(!sta)) {
4233 err = -EOPNOTSUPP;
4234 goto out_unlock;
4235 }
4236 /* Pairwise key with an assigned MAC address. */
4237 err = b43_key_write(dev, -1, algorithm,
4238 key->key, key->keylen,
4239 sta->addr, key);
4240 } else {
4241 /* Group key */
4242 err = b43_key_write(dev, index, algorithm,
4243 key->key, key->keylen, NULL, key);
4244 }
4245 if (err)
4246 goto out_unlock;
4247
4248 if (algorithm == B43_SEC_ALGO_WEP40 ||
4249 algorithm == B43_SEC_ALGO_WEP104) {
4250 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
4251 } else {
4252 b43_hf_write(dev,
4253 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
4254 }
4255 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4256 if (algorithm == B43_SEC_ALGO_TKIP)
4257 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
4258 break;
4259 case DISABLE_KEY: {
4260 err = b43_key_clear(dev, key->hw_key_idx);
4261 if (err)
4262 goto out_unlock;
4263 break;
4264 }
4265 default:
4266 B43_WARN_ON(1);
4267 }
4268
4269 out_unlock:
4270 if (!err) {
4271 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
4272 "mac: %pM\n",
4273 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
4274 sta ? sta->addr : bcast_addr);
4275 b43_dump_keymemory(dev);
4276 }
4277 mutex_unlock(&wl->mutex);
4278
4279 return err;
4280 }
4281
b43_op_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * fflags,u64 multicast)4282 static void b43_op_configure_filter(struct ieee80211_hw *hw,
4283 unsigned int changed, unsigned int *fflags,
4284 u64 multicast)
4285 {
4286 struct b43_wl *wl = hw_to_b43_wl(hw);
4287 struct b43_wldev *dev;
4288
4289 mutex_lock(&wl->mutex);
4290 dev = wl->current_dev;
4291 if (!dev) {
4292 *fflags = 0;
4293 goto out_unlock;
4294 }
4295
4296 *fflags &= FIF_ALLMULTI |
4297 FIF_FCSFAIL |
4298 FIF_PLCPFAIL |
4299 FIF_CONTROL |
4300 FIF_OTHER_BSS |
4301 FIF_BCN_PRBRESP_PROMISC;
4302
4303 changed &= FIF_ALLMULTI |
4304 FIF_FCSFAIL |
4305 FIF_PLCPFAIL |
4306 FIF_CONTROL |
4307 FIF_OTHER_BSS |
4308 FIF_BCN_PRBRESP_PROMISC;
4309
4310 wl->filter_flags = *fflags;
4311
4312 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
4313 b43_adjust_opmode(dev);
4314
4315 out_unlock:
4316 mutex_unlock(&wl->mutex);
4317 }
4318
4319 /* Locking: wl->mutex
4320 * Returns the current dev. This might be different from the passed in dev,
4321 * because the core might be gone away while we unlocked the mutex. */
b43_wireless_core_stop(struct b43_wldev * dev)4322 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
4323 {
4324 struct b43_wl *wl;
4325 struct b43_wldev *orig_dev;
4326 u32 mask;
4327 int queue_num;
4328
4329 if (!dev)
4330 return NULL;
4331 wl = dev->wl;
4332 redo:
4333 if (!dev || b43_status(dev) < B43_STAT_STARTED)
4334 return dev;
4335
4336 /* Cancel work. Unlock to avoid deadlocks. */
4337 mutex_unlock(&wl->mutex);
4338 cancel_delayed_work_sync(&dev->periodic_work);
4339 cancel_work_sync(&wl->tx_work);
4340 b43_leds_stop(dev);
4341 mutex_lock(&wl->mutex);
4342 dev = wl->current_dev;
4343 if (!dev || b43_status(dev) < B43_STAT_STARTED) {
4344 /* Whoops, aliens ate up the device while we were unlocked. */
4345 return dev;
4346 }
4347
4348 /* Disable interrupts on the device. */
4349 b43_set_status(dev, B43_STAT_INITIALIZED);
4350 if (b43_bus_host_is_sdio(dev->dev)) {
4351 /* wl->mutex is locked. That is enough. */
4352 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
4353 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
4354 } else {
4355 spin_lock_irq(&wl->hardirq_lock);
4356 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
4357 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
4358 spin_unlock_irq(&wl->hardirq_lock);
4359 }
4360 /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
4361 orig_dev = dev;
4362 mutex_unlock(&wl->mutex);
4363 if (b43_bus_host_is_sdio(dev->dev))
4364 b43_sdio_free_irq(dev);
4365 else
4366 free_irq(dev->dev->irq, dev);
4367 mutex_lock(&wl->mutex);
4368 dev = wl->current_dev;
4369 if (!dev)
4370 return dev;
4371 if (dev != orig_dev) {
4372 if (b43_status(dev) >= B43_STAT_STARTED)
4373 goto redo;
4374 return dev;
4375 }
4376 mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
4377 B43_WARN_ON(mask != 0xFFFFFFFF && mask);
4378
4379 /* Drain all TX queues. */
4380 for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
4381 while (skb_queue_len(&wl->tx_queue[queue_num])) {
4382 struct sk_buff *skb;
4383
4384 skb = skb_dequeue(&wl->tx_queue[queue_num]);
4385 ieee80211_free_txskb(wl->hw, skb);
4386 }
4387 }
4388
4389 b43_mac_suspend(dev);
4390 b43_leds_exit(dev);
4391 b43dbg(wl, "Wireless interface stopped\n");
4392
4393 return dev;
4394 }
4395
4396 /* Locking: wl->mutex */
b43_wireless_core_start(struct b43_wldev * dev)4397 static int b43_wireless_core_start(struct b43_wldev *dev)
4398 {
4399 int err;
4400
4401 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
4402
4403 drain_txstatus_queue(dev);
4404 if (b43_bus_host_is_sdio(dev->dev)) {
4405 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
4406 if (err) {
4407 b43err(dev->wl, "Cannot request SDIO IRQ\n");
4408 goto out;
4409 }
4410 } else {
4411 err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
4412 b43_interrupt_thread_handler,
4413 IRQF_SHARED, KBUILD_MODNAME, dev);
4414 if (err) {
4415 b43err(dev->wl, "Cannot request IRQ-%d\n",
4416 dev->dev->irq);
4417 goto out;
4418 }
4419 }
4420
4421 /* We are ready to run. */
4422 ieee80211_wake_queues(dev->wl->hw);
4423 b43_set_status(dev, B43_STAT_STARTED);
4424
4425 /* Start data flow (TX/RX). */
4426 b43_mac_enable(dev);
4427 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
4428
4429 /* Start maintenance work */
4430 b43_periodic_tasks_setup(dev);
4431
4432 b43_leds_init(dev);
4433
4434 b43dbg(dev->wl, "Wireless interface started\n");
4435 out:
4436 return err;
4437 }
4438
b43_phy_name(struct b43_wldev * dev,u8 phy_type)4439 static char *b43_phy_name(struct b43_wldev *dev, u8 phy_type)
4440 {
4441 switch (phy_type) {
4442 case B43_PHYTYPE_A:
4443 return "A";
4444 case B43_PHYTYPE_B:
4445 return "B";
4446 case B43_PHYTYPE_G:
4447 return "G";
4448 case B43_PHYTYPE_N:
4449 return "N";
4450 case B43_PHYTYPE_LP:
4451 return "LP";
4452 case B43_PHYTYPE_SSLPN:
4453 return "SSLPN";
4454 case B43_PHYTYPE_HT:
4455 return "HT";
4456 case B43_PHYTYPE_LCN:
4457 return "LCN";
4458 case B43_PHYTYPE_LCNXN:
4459 return "LCNXN";
4460 case B43_PHYTYPE_LCN40:
4461 return "LCN40";
4462 case B43_PHYTYPE_AC:
4463 return "AC";
4464 }
4465 return "UNKNOWN";
4466 }
4467
4468 /* Get PHY and RADIO versioning numbers */
b43_phy_versioning(struct b43_wldev * dev)4469 static int b43_phy_versioning(struct b43_wldev *dev)
4470 {
4471 struct b43_phy *phy = &dev->phy;
4472 const u8 core_rev = dev->dev->core_rev;
4473 u32 tmp;
4474 u8 analog_type;
4475 u8 phy_type;
4476 u8 phy_rev;
4477 u16 radio_manuf;
4478 u16 radio_id;
4479 u16 radio_rev;
4480 u8 radio_ver;
4481 int unsupported = 0;
4482
4483 /* Get PHY versioning */
4484 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4485 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4486 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4487 phy_rev = (tmp & B43_PHYVER_VERSION);
4488
4489 /* LCNXN is continuation of N which run out of revisions */
4490 if (phy_type == B43_PHYTYPE_LCNXN) {
4491 phy_type = B43_PHYTYPE_N;
4492 phy_rev += 16;
4493 }
4494
4495 switch (phy_type) {
4496 #ifdef CONFIG_B43_PHY_G
4497 case B43_PHYTYPE_G:
4498 if (phy_rev > 9)
4499 unsupported = 1;
4500 break;
4501 #endif
4502 #ifdef CONFIG_B43_PHY_N
4503 case B43_PHYTYPE_N:
4504 if (phy_rev >= 19)
4505 unsupported = 1;
4506 break;
4507 #endif
4508 #ifdef CONFIG_B43_PHY_LP
4509 case B43_PHYTYPE_LP:
4510 if (phy_rev > 2)
4511 unsupported = 1;
4512 break;
4513 #endif
4514 #ifdef CONFIG_B43_PHY_HT
4515 case B43_PHYTYPE_HT:
4516 if (phy_rev > 1)
4517 unsupported = 1;
4518 break;
4519 #endif
4520 #ifdef CONFIG_B43_PHY_LCN
4521 case B43_PHYTYPE_LCN:
4522 if (phy_rev > 1)
4523 unsupported = 1;
4524 break;
4525 #endif
4526 #ifdef CONFIG_B43_PHY_AC
4527 case B43_PHYTYPE_AC:
4528 if (phy_rev > 1)
4529 unsupported = 1;
4530 break;
4531 #endif
4532 default:
4533 unsupported = 1;
4534 }
4535 if (unsupported) {
4536 b43err(dev->wl, "FOUND UNSUPPORTED PHY (Analog %u, Type %d (%s), Revision %u)\n",
4537 analog_type, phy_type, b43_phy_name(dev, phy_type),
4538 phy_rev);
4539 return -EOPNOTSUPP;
4540 }
4541 b43info(dev->wl, "Found PHY: Analog %u, Type %d (%s), Revision %u\n",
4542 analog_type, phy_type, b43_phy_name(dev, phy_type), phy_rev);
4543
4544 /* Get RADIO versioning */
4545 if (core_rev == 40 || core_rev == 42) {
4546 radio_manuf = 0x17F;
4547
4548 b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, 0);
4549 radio_rev = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4550
4551 b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, 1);
4552 radio_id = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4553
4554 radio_ver = 0; /* Is there version somewhere? */
4555 } else if (core_rev >= 24) {
4556 u16 radio24[3];
4557
4558 for (tmp = 0; tmp < 3; tmp++) {
4559 b43_write16f(dev, B43_MMIO_RADIO24_CONTROL, tmp);
4560 radio24[tmp] = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4561 }
4562
4563 radio_manuf = 0x17F;
4564 radio_id = (radio24[2] << 8) | radio24[1];
4565 radio_rev = (radio24[0] & 0xF);
4566 radio_ver = (radio24[0] & 0xF0) >> 4;
4567 } else {
4568 if (dev->dev->chip_id == 0x4317) {
4569 if (dev->dev->chip_rev == 0)
4570 tmp = 0x3205017F;
4571 else if (dev->dev->chip_rev == 1)
4572 tmp = 0x4205017F;
4573 else
4574 tmp = 0x5205017F;
4575 } else {
4576 b43_write16f(dev, B43_MMIO_RADIO_CONTROL,
4577 B43_RADIOCTL_ID);
4578 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4579 b43_write16f(dev, B43_MMIO_RADIO_CONTROL,
4580 B43_RADIOCTL_ID);
4581 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
4582 }
4583 radio_manuf = (tmp & 0x00000FFF);
4584 radio_id = (tmp & 0x0FFFF000) >> 12;
4585 radio_rev = (tmp & 0xF0000000) >> 28;
4586 radio_ver = 0; /* Probably not available on old hw */
4587 }
4588
4589 if (radio_manuf != 0x17F /* Broadcom */)
4590 unsupported = 1;
4591 switch (phy_type) {
4592 case B43_PHYTYPE_B:
4593 if ((radio_id & 0xFFF0) != 0x2050)
4594 unsupported = 1;
4595 break;
4596 case B43_PHYTYPE_G:
4597 if (radio_id != 0x2050)
4598 unsupported = 1;
4599 break;
4600 case B43_PHYTYPE_N:
4601 if (radio_id != 0x2055 && radio_id != 0x2056 &&
4602 radio_id != 0x2057)
4603 unsupported = 1;
4604 if (radio_id == 0x2057 &&
4605 !(radio_rev == 9 || radio_rev == 14))
4606 unsupported = 1;
4607 break;
4608 case B43_PHYTYPE_LP:
4609 if (radio_id != 0x2062 && radio_id != 0x2063)
4610 unsupported = 1;
4611 break;
4612 case B43_PHYTYPE_HT:
4613 if (radio_id != 0x2059)
4614 unsupported = 1;
4615 break;
4616 case B43_PHYTYPE_LCN:
4617 if (radio_id != 0x2064)
4618 unsupported = 1;
4619 break;
4620 case B43_PHYTYPE_AC:
4621 if (radio_id != 0x2069)
4622 unsupported = 1;
4623 break;
4624 default:
4625 B43_WARN_ON(1);
4626 }
4627 if (unsupported) {
4628 b43err(dev->wl,
4629 "FOUND UNSUPPORTED RADIO (Manuf 0x%X, ID 0x%X, Revision %u, Version %u)\n",
4630 radio_manuf, radio_id, radio_rev, radio_ver);
4631 return -EOPNOTSUPP;
4632 }
4633 b43info(dev->wl,
4634 "Found Radio: Manuf 0x%X, ID 0x%X, Revision %u, Version %u\n",
4635 radio_manuf, radio_id, radio_rev, radio_ver);
4636
4637 /* FIXME: b43 treats "id" as "ver" and ignores the real "ver" */
4638 phy->radio_manuf = radio_manuf;
4639 phy->radio_ver = radio_id;
4640 phy->radio_rev = radio_rev;
4641
4642 phy->analog = analog_type;
4643 phy->type = phy_type;
4644 phy->rev = phy_rev;
4645
4646 return 0;
4647 }
4648
setup_struct_phy_for_init(struct b43_wldev * dev,struct b43_phy * phy)4649 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4650 struct b43_phy *phy)
4651 {
4652 phy->hardware_power_control = !!modparam_hwpctl;
4653 phy->next_txpwr_check_time = jiffies;
4654 /* PHY TX errors counter. */
4655 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4656
4657 #if B43_DEBUG
4658 phy->phy_locked = false;
4659 phy->radio_locked = false;
4660 #endif
4661 }
4662
setup_struct_wldev_for_init(struct b43_wldev * dev)4663 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4664 {
4665 dev->dfq_valid = false;
4666
4667 /* Assume the radio is enabled. If it's not enabled, the state will
4668 * immediately get fixed on the first periodic work run. */
4669 dev->radio_hw_enable = true;
4670
4671 /* Stats */
4672 memset(&dev->stats, 0, sizeof(dev->stats));
4673
4674 setup_struct_phy_for_init(dev, &dev->phy);
4675
4676 /* IRQ related flags */
4677 dev->irq_reason = 0;
4678 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4679 dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4680 if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4681 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4682
4683 dev->mac_suspended = 1;
4684
4685 /* Noise calculation context */
4686 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4687 }
4688
b43_bluetooth_coext_enable(struct b43_wldev * dev)4689 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4690 {
4691 struct ssb_sprom *sprom = dev->dev->bus_sprom;
4692 u64 hf;
4693
4694 if (!modparam_btcoex)
4695 return;
4696 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4697 return;
4698 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4699 return;
4700
4701 hf = b43_hf_read(dev);
4702 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4703 hf |= B43_HF_BTCOEXALT;
4704 else
4705 hf |= B43_HF_BTCOEX;
4706 b43_hf_write(dev, hf);
4707 }
4708
b43_bluetooth_coext_disable(struct b43_wldev * dev)4709 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4710 {
4711 if (!modparam_btcoex)
4712 return;
4713 //TODO
4714 }
4715
b43_imcfglo_timeouts_workaround(struct b43_wldev * dev)4716 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4717 {
4718 struct ssb_bus *bus;
4719 u32 tmp;
4720
4721 #ifdef CONFIG_B43_SSB
4722 if (dev->dev->bus_type != B43_BUS_SSB)
4723 return;
4724 #else
4725 return;
4726 #endif
4727
4728 bus = dev->dev->sdev->bus;
4729
4730 if ((bus->chip_id == 0x4311 && bus->chip_rev == 2) ||
4731 (bus->chip_id == 0x4312)) {
4732 tmp = ssb_read32(dev->dev->sdev, SSB_IMCFGLO);
4733 tmp &= ~SSB_IMCFGLO_REQTO;
4734 tmp &= ~SSB_IMCFGLO_SERTO;
4735 tmp |= 0x3;
4736 ssb_write32(dev->dev->sdev, SSB_IMCFGLO, tmp);
4737 ssb_commit_settings(bus);
4738 }
4739 }
4740
b43_set_synth_pu_delay(struct b43_wldev * dev,bool idle)4741 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4742 {
4743 u16 pu_delay;
4744
4745 /* The time value is in microseconds. */
4746 pu_delay = 1050;
4747 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4748 pu_delay = 500;
4749 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4750 pu_delay = max(pu_delay, (u16)2400);
4751
4752 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4753 }
4754
4755 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
b43_set_pretbtt(struct b43_wldev * dev)4756 static void b43_set_pretbtt(struct b43_wldev *dev)
4757 {
4758 u16 pretbtt;
4759
4760 /* The time value is in microseconds. */
4761 if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
4762 pretbtt = 2;
4763 else
4764 pretbtt = 250;
4765 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4766 b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4767 }
4768
4769 /* Shutdown a wireless core */
4770 /* Locking: wl->mutex */
b43_wireless_core_exit(struct b43_wldev * dev)4771 static void b43_wireless_core_exit(struct b43_wldev *dev)
4772 {
4773 B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4774 if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4775 return;
4776
4777 b43_set_status(dev, B43_STAT_UNINIT);
4778
4779 /* Stop the microcode PSM. */
4780 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
4781 B43_MACCTL_PSM_JMP0);
4782
4783 switch (dev->dev->bus_type) {
4784 #ifdef CONFIG_B43_BCMA
4785 case B43_BUS_BCMA:
4786 bcma_host_pci_down(dev->dev->bdev->bus);
4787 break;
4788 #endif
4789 #ifdef CONFIG_B43_SSB
4790 case B43_BUS_SSB:
4791 /* TODO */
4792 break;
4793 #endif
4794 }
4795
4796 b43_dma_free(dev);
4797 b43_pio_free(dev);
4798 b43_chip_exit(dev);
4799 dev->phy.ops->switch_analog(dev, 0);
4800 if (dev->wl->current_beacon) {
4801 dev_kfree_skb_any(dev->wl->current_beacon);
4802 dev->wl->current_beacon = NULL;
4803 }
4804
4805 b43_device_disable(dev, 0);
4806 b43_bus_may_powerdown(dev);
4807 }
4808
4809 /* Initialize a wireless core */
b43_wireless_core_init(struct b43_wldev * dev)4810 static int b43_wireless_core_init(struct b43_wldev *dev)
4811 {
4812 struct ssb_sprom *sprom = dev->dev->bus_sprom;
4813 struct b43_phy *phy = &dev->phy;
4814 int err;
4815 u64 hf;
4816
4817 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4818
4819 err = b43_bus_powerup(dev, 0);
4820 if (err)
4821 goto out;
4822 if (!b43_device_is_enabled(dev))
4823 b43_wireless_core_reset(dev, phy->gmode);
4824
4825 /* Reset all data structures. */
4826 setup_struct_wldev_for_init(dev);
4827 phy->ops->prepare_structs(dev);
4828
4829 /* Enable IRQ routing to this device. */
4830 switch (dev->dev->bus_type) {
4831 #ifdef CONFIG_B43_BCMA
4832 case B43_BUS_BCMA:
4833 bcma_host_pci_irq_ctl(dev->dev->bdev->bus,
4834 dev->dev->bdev, true);
4835 bcma_host_pci_up(dev->dev->bdev->bus);
4836 break;
4837 #endif
4838 #ifdef CONFIG_B43_SSB
4839 case B43_BUS_SSB:
4840 ssb_pcicore_dev_irqvecs_enable(&dev->dev->sdev->bus->pcicore,
4841 dev->dev->sdev);
4842 break;
4843 #endif
4844 }
4845
4846 b43_imcfglo_timeouts_workaround(dev);
4847 b43_bluetooth_coext_disable(dev);
4848 if (phy->ops->prepare_hardware) {
4849 err = phy->ops->prepare_hardware(dev);
4850 if (err)
4851 goto err_busdown;
4852 }
4853 err = b43_chip_init(dev);
4854 if (err)
4855 goto err_busdown;
4856 b43_shm_write16(dev, B43_SHM_SHARED,
4857 B43_SHM_SH_WLCOREREV, dev->dev->core_rev);
4858 hf = b43_hf_read(dev);
4859 if (phy->type == B43_PHYTYPE_G) {
4860 hf |= B43_HF_SYMW;
4861 if (phy->rev == 1)
4862 hf |= B43_HF_GDCW;
4863 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4864 hf |= B43_HF_OFDMPABOOST;
4865 }
4866 if (phy->radio_ver == 0x2050) {
4867 if (phy->radio_rev == 6)
4868 hf |= B43_HF_4318TSSI;
4869 if (phy->radio_rev < 6)
4870 hf |= B43_HF_VCORECALC;
4871 }
4872 if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4873 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4874 #if defined(CONFIG_B43_SSB) && defined(CONFIG_SSB_DRIVER_PCICORE)
4875 if (dev->dev->bus_type == B43_BUS_SSB &&
4876 dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI &&
4877 dev->dev->sdev->bus->pcicore.dev->id.revision <= 10)
4878 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4879 #endif
4880 hf &= ~B43_HF_SKCFPUP;
4881 b43_hf_write(dev, hf);
4882
4883 /* tell the ucode MAC capabilities */
4884 if (dev->dev->core_rev >= 13) {
4885 u32 mac_hw_cap = b43_read32(dev, B43_MMIO_MAC_HW_CAP);
4886
4887 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_MACHW_L,
4888 mac_hw_cap & 0xffff);
4889 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_MACHW_H,
4890 (mac_hw_cap >> 16) & 0xffff);
4891 }
4892
4893 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4894 B43_DEFAULT_LONG_RETRY_LIMIT);
4895 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4896 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4897
4898 /* Disable sending probe responses from firmware.
4899 * Setting the MaxTime to one usec will always trigger
4900 * a timeout, so we never send any probe resp.
4901 * A timeout of zero is infinite. */
4902 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4903
4904 b43_rate_memory_init(dev);
4905 b43_set_phytxctl_defaults(dev);
4906
4907 /* Minimum Contention Window */
4908 if (phy->type == B43_PHYTYPE_B)
4909 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4910 else
4911 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4912 /* Maximum Contention Window */
4913 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4914
4915 /* write phytype and phyvers */
4916 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PHYTYPE, phy->type);
4917 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PHYVER, phy->rev);
4918
4919 if (b43_bus_host_is_pcmcia(dev->dev) ||
4920 b43_bus_host_is_sdio(dev->dev)) {
4921 dev->__using_pio_transfers = true;
4922 err = b43_pio_init(dev);
4923 } else if (dev->use_pio) {
4924 b43warn(dev->wl, "Forced PIO by use_pio module parameter. "
4925 "This should not be needed and will result in lower "
4926 "performance.\n");
4927 dev->__using_pio_transfers = true;
4928 err = b43_pio_init(dev);
4929 } else {
4930 dev->__using_pio_transfers = false;
4931 err = b43_dma_init(dev);
4932 }
4933 if (err)
4934 goto err_chip_exit;
4935 b43_qos_init(dev);
4936 b43_set_synth_pu_delay(dev, 1);
4937 b43_bluetooth_coext_enable(dev);
4938
4939 b43_bus_powerup(dev, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4940 b43_upload_card_macaddress(dev);
4941 b43_security_init(dev);
4942
4943 ieee80211_wake_queues(dev->wl->hw);
4944
4945 b43_set_status(dev, B43_STAT_INITIALIZED);
4946
4947 out:
4948 return err;
4949
4950 err_chip_exit:
4951 b43_chip_exit(dev);
4952 err_busdown:
4953 b43_bus_may_powerdown(dev);
4954 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4955 return err;
4956 }
4957
b43_op_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4958 static int b43_op_add_interface(struct ieee80211_hw *hw,
4959 struct ieee80211_vif *vif)
4960 {
4961 struct b43_wl *wl = hw_to_b43_wl(hw);
4962 struct b43_wldev *dev;
4963 int err = -EOPNOTSUPP;
4964
4965 /* TODO: allow AP devices to coexist */
4966
4967 if (vif->type != NL80211_IFTYPE_AP &&
4968 vif->type != NL80211_IFTYPE_MESH_POINT &&
4969 vif->type != NL80211_IFTYPE_STATION &&
4970 vif->type != NL80211_IFTYPE_ADHOC)
4971 return -EOPNOTSUPP;
4972
4973 mutex_lock(&wl->mutex);
4974 if (wl->operating)
4975 goto out_mutex_unlock;
4976
4977 b43dbg(wl, "Adding Interface type %d\n", vif->type);
4978
4979 dev = wl->current_dev;
4980 wl->operating = true;
4981 wl->vif = vif;
4982 wl->if_type = vif->type;
4983 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
4984
4985 b43_adjust_opmode(dev);
4986 b43_set_pretbtt(dev);
4987 b43_set_synth_pu_delay(dev, 0);
4988 b43_upload_card_macaddress(dev);
4989
4990 err = 0;
4991 out_mutex_unlock:
4992 mutex_unlock(&wl->mutex);
4993
4994 if (err == 0)
4995 b43_op_bss_info_changed(hw, vif, &vif->bss_conf, ~0);
4996
4997 return err;
4998 }
4999
b43_op_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)5000 static void b43_op_remove_interface(struct ieee80211_hw *hw,
5001 struct ieee80211_vif *vif)
5002 {
5003 struct b43_wl *wl = hw_to_b43_wl(hw);
5004 struct b43_wldev *dev = wl->current_dev;
5005
5006 b43dbg(wl, "Removing Interface type %d\n", vif->type);
5007
5008 mutex_lock(&wl->mutex);
5009
5010 B43_WARN_ON(!wl->operating);
5011 B43_WARN_ON(wl->vif != vif);
5012 wl->vif = NULL;
5013
5014 wl->operating = false;
5015
5016 b43_adjust_opmode(dev);
5017 eth_zero_addr(wl->mac_addr);
5018 b43_upload_card_macaddress(dev);
5019
5020 mutex_unlock(&wl->mutex);
5021 }
5022
b43_op_start(struct ieee80211_hw * hw)5023 static int b43_op_start(struct ieee80211_hw *hw)
5024 {
5025 struct b43_wl *wl = hw_to_b43_wl(hw);
5026 struct b43_wldev *dev = wl->current_dev;
5027 int did_init = 0;
5028 int err = 0;
5029
5030 /* Kill all old instance specific information to make sure
5031 * the card won't use it in the short timeframe between start
5032 * and mac80211 reconfiguring it. */
5033 eth_zero_addr(wl->bssid);
5034 eth_zero_addr(wl->mac_addr);
5035 wl->filter_flags = 0;
5036 wl->radiotap_enabled = false;
5037 b43_qos_clear(wl);
5038 wl->beacon0_uploaded = false;
5039 wl->beacon1_uploaded = false;
5040 wl->beacon_templates_virgin = true;
5041 wl->radio_enabled = true;
5042
5043 mutex_lock(&wl->mutex);
5044
5045 if (b43_status(dev) < B43_STAT_INITIALIZED) {
5046 err = b43_wireless_core_init(dev);
5047 if (err)
5048 goto out_mutex_unlock;
5049 did_init = 1;
5050 }
5051
5052 if (b43_status(dev) < B43_STAT_STARTED) {
5053 err = b43_wireless_core_start(dev);
5054 if (err) {
5055 if (did_init)
5056 b43_wireless_core_exit(dev);
5057 goto out_mutex_unlock;
5058 }
5059 }
5060
5061 /* XXX: only do if device doesn't support rfkill irq */
5062 wiphy_rfkill_start_polling(hw->wiphy);
5063
5064 out_mutex_unlock:
5065 mutex_unlock(&wl->mutex);
5066
5067 /*
5068 * Configuration may have been overwritten during initialization.
5069 * Reload the configuration, but only if initialization was
5070 * successful. Reloading the configuration after a failed init
5071 * may hang the system.
5072 */
5073 if (!err)
5074 b43_op_config(hw, ~0);
5075
5076 return err;
5077 }
5078
b43_op_stop(struct ieee80211_hw * hw)5079 static void b43_op_stop(struct ieee80211_hw *hw)
5080 {
5081 struct b43_wl *wl = hw_to_b43_wl(hw);
5082 struct b43_wldev *dev = wl->current_dev;
5083
5084 cancel_work_sync(&(wl->beacon_update_trigger));
5085
5086 if (!dev)
5087 goto out;
5088
5089 mutex_lock(&wl->mutex);
5090 if (b43_status(dev) >= B43_STAT_STARTED) {
5091 dev = b43_wireless_core_stop(dev);
5092 if (!dev)
5093 goto out_unlock;
5094 }
5095 b43_wireless_core_exit(dev);
5096 wl->radio_enabled = false;
5097
5098 out_unlock:
5099 mutex_unlock(&wl->mutex);
5100 out:
5101 cancel_work_sync(&(wl->txpower_adjust_work));
5102 }
5103
b43_op_beacon_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)5104 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
5105 struct ieee80211_sta *sta, bool set)
5106 {
5107 struct b43_wl *wl = hw_to_b43_wl(hw);
5108
5109 b43_update_templates(wl);
5110
5111 return 0;
5112 }
5113
b43_op_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd notify_cmd,struct ieee80211_sta * sta)5114 static void b43_op_sta_notify(struct ieee80211_hw *hw,
5115 struct ieee80211_vif *vif,
5116 enum sta_notify_cmd notify_cmd,
5117 struct ieee80211_sta *sta)
5118 {
5119 struct b43_wl *wl = hw_to_b43_wl(hw);
5120
5121 B43_WARN_ON(!vif || wl->vif != vif);
5122 }
5123
b43_op_sw_scan_start_notifier(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)5124 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw,
5125 struct ieee80211_vif *vif,
5126 const u8 *mac_addr)
5127 {
5128 struct b43_wl *wl = hw_to_b43_wl(hw);
5129 struct b43_wldev *dev;
5130
5131 mutex_lock(&wl->mutex);
5132 dev = wl->current_dev;
5133 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
5134 /* Disable CFP update during scan on other channels. */
5135 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
5136 }
5137 mutex_unlock(&wl->mutex);
5138 }
5139
b43_op_sw_scan_complete_notifier(struct ieee80211_hw * hw,struct ieee80211_vif * vif)5140 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw,
5141 struct ieee80211_vif *vif)
5142 {
5143 struct b43_wl *wl = hw_to_b43_wl(hw);
5144 struct b43_wldev *dev;
5145
5146 mutex_lock(&wl->mutex);
5147 dev = wl->current_dev;
5148 if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
5149 /* Re-enable CFP update. */
5150 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
5151 }
5152 mutex_unlock(&wl->mutex);
5153 }
5154
b43_op_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)5155 static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
5156 struct survey_info *survey)
5157 {
5158 struct b43_wl *wl = hw_to_b43_wl(hw);
5159 struct b43_wldev *dev = wl->current_dev;
5160 struct ieee80211_conf *conf = &hw->conf;
5161
5162 if (idx != 0)
5163 return -ENOENT;
5164
5165 survey->channel = conf->chandef.chan;
5166 survey->filled = SURVEY_INFO_NOISE_DBM;
5167 survey->noise = dev->stats.link_noise;
5168
5169 return 0;
5170 }
5171
5172 static const struct ieee80211_ops b43_hw_ops = {
5173 .tx = b43_op_tx,
5174 .conf_tx = b43_op_conf_tx,
5175 .add_interface = b43_op_add_interface,
5176 .remove_interface = b43_op_remove_interface,
5177 .config = b43_op_config,
5178 .bss_info_changed = b43_op_bss_info_changed,
5179 .configure_filter = b43_op_configure_filter,
5180 .set_key = b43_op_set_key,
5181 .update_tkip_key = b43_op_update_tkip_key,
5182 .get_stats = b43_op_get_stats,
5183 .get_tsf = b43_op_get_tsf,
5184 .set_tsf = b43_op_set_tsf,
5185 .start = b43_op_start,
5186 .stop = b43_op_stop,
5187 .set_tim = b43_op_beacon_set_tim,
5188 .sta_notify = b43_op_sta_notify,
5189 .sw_scan_start = b43_op_sw_scan_start_notifier,
5190 .sw_scan_complete = b43_op_sw_scan_complete_notifier,
5191 .get_survey = b43_op_get_survey,
5192 .rfkill_poll = b43_rfkill_poll,
5193 };
5194
5195 /* Hard-reset the chip. Do not call this directly.
5196 * Use b43_controller_restart()
5197 */
b43_chip_reset(struct work_struct * work)5198 static void b43_chip_reset(struct work_struct *work)
5199 {
5200 struct b43_wldev *dev =
5201 container_of(work, struct b43_wldev, restart_work);
5202 struct b43_wl *wl = dev->wl;
5203 int err = 0;
5204 int prev_status;
5205
5206 mutex_lock(&wl->mutex);
5207
5208 prev_status = b43_status(dev);
5209 /* Bring the device down... */
5210 if (prev_status >= B43_STAT_STARTED) {
5211 dev = b43_wireless_core_stop(dev);
5212 if (!dev) {
5213 err = -ENODEV;
5214 goto out;
5215 }
5216 }
5217 if (prev_status >= B43_STAT_INITIALIZED)
5218 b43_wireless_core_exit(dev);
5219
5220 /* ...and up again. */
5221 if (prev_status >= B43_STAT_INITIALIZED) {
5222 err = b43_wireless_core_init(dev);
5223 if (err)
5224 goto out;
5225 }
5226 if (prev_status >= B43_STAT_STARTED) {
5227 err = b43_wireless_core_start(dev);
5228 if (err) {
5229 b43_wireless_core_exit(dev);
5230 goto out;
5231 }
5232 }
5233 out:
5234 if (err)
5235 wl->current_dev = NULL; /* Failed to init the dev. */
5236 mutex_unlock(&wl->mutex);
5237
5238 if (err) {
5239 b43err(wl, "Controller restart FAILED\n");
5240 return;
5241 }
5242
5243 /* reload configuration */
5244 b43_op_config(wl->hw, ~0);
5245 if (wl->vif)
5246 b43_op_bss_info_changed(wl->hw, wl->vif, &wl->vif->bss_conf, ~0);
5247
5248 b43info(wl, "Controller restarted\n");
5249 }
5250
b43_setup_bands(struct b43_wldev * dev,bool have_2ghz_phy,bool have_5ghz_phy)5251 static int b43_setup_bands(struct b43_wldev *dev,
5252 bool have_2ghz_phy, bool have_5ghz_phy)
5253 {
5254 struct ieee80211_hw *hw = dev->wl->hw;
5255 struct b43_phy *phy = &dev->phy;
5256 bool limited_2g;
5257 bool limited_5g;
5258
5259 /* We don't support all 2 GHz channels on some devices */
5260 limited_2g = phy->radio_ver == 0x2057 &&
5261 (phy->radio_rev == 9 || phy->radio_rev == 14);
5262 limited_5g = phy->radio_ver == 0x2057 &&
5263 phy->radio_rev == 9;
5264
5265 if (have_2ghz_phy)
5266 hw->wiphy->bands[NL80211_BAND_2GHZ] = limited_2g ?
5267 &b43_band_2ghz_limited : &b43_band_2GHz;
5268 if (dev->phy.type == B43_PHYTYPE_N) {
5269 if (have_5ghz_phy)
5270 hw->wiphy->bands[NL80211_BAND_5GHZ] = limited_5g ?
5271 &b43_band_5GHz_nphy_limited :
5272 &b43_band_5GHz_nphy;
5273 } else {
5274 if (have_5ghz_phy)
5275 hw->wiphy->bands[NL80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
5276 }
5277
5278 dev->phy.supports_2ghz = have_2ghz_phy;
5279 dev->phy.supports_5ghz = have_5ghz_phy;
5280
5281 return 0;
5282 }
5283
b43_wireless_core_detach(struct b43_wldev * dev)5284 static void b43_wireless_core_detach(struct b43_wldev *dev)
5285 {
5286 /* We release firmware that late to not be required to re-request
5287 * is all the time when we reinit the core. */
5288 b43_release_firmware(dev);
5289 b43_phy_free(dev);
5290 }
5291
b43_supported_bands(struct b43_wldev * dev,bool * have_2ghz_phy,bool * have_5ghz_phy)5292 static void b43_supported_bands(struct b43_wldev *dev, bool *have_2ghz_phy,
5293 bool *have_5ghz_phy)
5294 {
5295 u16 dev_id = 0;
5296
5297 #ifdef CONFIG_B43_BCMA
5298 if (dev->dev->bus_type == B43_BUS_BCMA &&
5299 dev->dev->bdev->bus->hosttype == BCMA_HOSTTYPE_PCI)
5300 dev_id = dev->dev->bdev->bus->host_pci->device;
5301 #endif
5302 #ifdef CONFIG_B43_SSB
5303 if (dev->dev->bus_type == B43_BUS_SSB &&
5304 dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI)
5305 dev_id = dev->dev->sdev->bus->host_pci->device;
5306 #endif
5307 /* Override with SPROM value if available */
5308 if (dev->dev->bus_sprom->dev_id)
5309 dev_id = dev->dev->bus_sprom->dev_id;
5310
5311 /* Note: below IDs can be "virtual" (not maching e.g. real PCI ID) */
5312 switch (dev_id) {
5313 case 0x4324: /* BCM4306 */
5314 case 0x4312: /* BCM4311 */
5315 case 0x4319: /* BCM4318 */
5316 case 0x4328: /* BCM4321 */
5317 case 0x432b: /* BCM4322 */
5318 case 0x4350: /* BCM43222 */
5319 case 0x4353: /* BCM43224 */
5320 case 0x0576: /* BCM43224 */
5321 case 0x435f: /* BCM6362 */
5322 case 0x4331: /* BCM4331 */
5323 case 0x4359: /* BCM43228 */
5324 case 0x43a0: /* BCM4360 */
5325 case 0x43b1: /* BCM4352 */
5326 /* Dual band devices */
5327 *have_2ghz_phy = true;
5328 *have_5ghz_phy = true;
5329 return;
5330 case 0x4321: /* BCM4306 */
5331 /* There are 14e4:4321 PCI devs with 2.4 GHz BCM4321 (N-PHY) */
5332 if (dev->phy.type != B43_PHYTYPE_G)
5333 break;
5334 fallthrough;
5335 case 0x4313: /* BCM4311 */
5336 case 0x431a: /* BCM4318 */
5337 case 0x432a: /* BCM4321 */
5338 case 0x432d: /* BCM4322 */
5339 case 0x4352: /* BCM43222 */
5340 case 0x435a: /* BCM43228 */
5341 case 0x4333: /* BCM4331 */
5342 case 0x43a2: /* BCM4360 */
5343 case 0x43b3: /* BCM4352 */
5344 /* 5 GHz only devices */
5345 *have_2ghz_phy = false;
5346 *have_5ghz_phy = true;
5347 return;
5348 }
5349
5350 /* As a fallback, try to guess using PHY type */
5351 switch (dev->phy.type) {
5352 case B43_PHYTYPE_G:
5353 case B43_PHYTYPE_N:
5354 case B43_PHYTYPE_LP:
5355 case B43_PHYTYPE_HT:
5356 case B43_PHYTYPE_LCN:
5357 *have_2ghz_phy = true;
5358 *have_5ghz_phy = false;
5359 return;
5360 }
5361
5362 B43_WARN_ON(1);
5363 }
5364
b43_wireless_core_attach(struct b43_wldev * dev)5365 static int b43_wireless_core_attach(struct b43_wldev *dev)
5366 {
5367 struct b43_wl *wl = dev->wl;
5368 struct b43_phy *phy = &dev->phy;
5369 int err;
5370 u32 tmp;
5371 bool have_2ghz_phy = false, have_5ghz_phy = false;
5372
5373 /* Do NOT do any device initialization here.
5374 * Do it in wireless_core_init() instead.
5375 * This function is for gathering basic information about the HW, only.
5376 * Also some structs may be set up here. But most likely you want to have
5377 * that in core_init(), too.
5378 */
5379
5380 err = b43_bus_powerup(dev, 0);
5381 if (err) {
5382 b43err(wl, "Bus powerup failed\n");
5383 goto out;
5384 }
5385
5386 phy->do_full_init = true;
5387
5388 /* Try to guess supported bands for the first init needs */
5389 switch (dev->dev->bus_type) {
5390 #ifdef CONFIG_B43_BCMA
5391 case B43_BUS_BCMA:
5392 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST);
5393 have_2ghz_phy = !!(tmp & B43_BCMA_IOST_2G_PHY);
5394 have_5ghz_phy = !!(tmp & B43_BCMA_IOST_5G_PHY);
5395 break;
5396 #endif
5397 #ifdef CONFIG_B43_SSB
5398 case B43_BUS_SSB:
5399 if (dev->dev->core_rev >= 5) {
5400 tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
5401 have_2ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_2GHZ_PHY);
5402 have_5ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_5GHZ_PHY);
5403 } else
5404 B43_WARN_ON(1);
5405 break;
5406 #endif
5407 }
5408
5409 dev->phy.gmode = have_2ghz_phy;
5410 b43_wireless_core_reset(dev, dev->phy.gmode);
5411
5412 /* Get the PHY type. */
5413 err = b43_phy_versioning(dev);
5414 if (err)
5415 goto err_powerdown;
5416
5417 /* Get real info about supported bands */
5418 b43_supported_bands(dev, &have_2ghz_phy, &have_5ghz_phy);
5419
5420 /* We don't support 5 GHz on some PHYs yet */
5421 if (have_5ghz_phy) {
5422 switch (dev->phy.type) {
5423 case B43_PHYTYPE_G:
5424 case B43_PHYTYPE_LP:
5425 case B43_PHYTYPE_HT:
5426 b43warn(wl, "5 GHz band is unsupported on this PHY\n");
5427 have_5ghz_phy = false;
5428 }
5429 }
5430
5431 if (!have_2ghz_phy && !have_5ghz_phy) {
5432 b43err(wl, "b43 can't support any band on this device\n");
5433 err = -EOPNOTSUPP;
5434 goto err_powerdown;
5435 }
5436
5437 err = b43_phy_allocate(dev);
5438 if (err)
5439 goto err_powerdown;
5440
5441 dev->phy.gmode = have_2ghz_phy;
5442 b43_wireless_core_reset(dev, dev->phy.gmode);
5443
5444 err = b43_validate_chipaccess(dev);
5445 if (err)
5446 goto err_phy_free;
5447 err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
5448 if (err)
5449 goto err_phy_free;
5450
5451 /* Now set some default "current_dev" */
5452 if (!wl->current_dev)
5453 wl->current_dev = dev;
5454 INIT_WORK(&dev->restart_work, b43_chip_reset);
5455
5456 dev->phy.ops->switch_analog(dev, 0);
5457 b43_device_disable(dev, 0);
5458 b43_bus_may_powerdown(dev);
5459
5460 out:
5461 return err;
5462
5463 err_phy_free:
5464 b43_phy_free(dev);
5465 err_powerdown:
5466 b43_bus_may_powerdown(dev);
5467 return err;
5468 }
5469
b43_one_core_detach(struct b43_bus_dev * dev)5470 static void b43_one_core_detach(struct b43_bus_dev *dev)
5471 {
5472 struct b43_wldev *wldev;
5473
5474 /* Do not cancel ieee80211-workqueue based work here.
5475 * See comment in b43_remove(). */
5476
5477 wldev = b43_bus_get_wldev(dev);
5478 b43_debugfs_remove_device(wldev);
5479 b43_wireless_core_detach(wldev);
5480 list_del(&wldev->list);
5481 b43_bus_set_wldev(dev, NULL);
5482 kfree(wldev);
5483 }
5484
b43_one_core_attach(struct b43_bus_dev * dev,struct b43_wl * wl)5485 static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl)
5486 {
5487 struct b43_wldev *wldev;
5488 int err = -ENOMEM;
5489
5490 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
5491 if (!wldev)
5492 goto out;
5493
5494 wldev->use_pio = b43_modparam_pio;
5495 wldev->dev = dev;
5496 wldev->wl = wl;
5497 b43_set_status(wldev, B43_STAT_UNINIT);
5498 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
5499 INIT_LIST_HEAD(&wldev->list);
5500
5501 err = b43_wireless_core_attach(wldev);
5502 if (err)
5503 goto err_kfree_wldev;
5504
5505 b43_bus_set_wldev(dev, wldev);
5506 b43_debugfs_add_device(wldev);
5507
5508 out:
5509 return err;
5510
5511 err_kfree_wldev:
5512 kfree(wldev);
5513 return err;
5514 }
5515
5516 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice) ( \
5517 (pdev->vendor == PCI_VENDOR_ID_##_vendor) && \
5518 (pdev->device == _device) && \
5519 (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) && \
5520 (pdev->subsystem_device == _subdevice) )
5521
5522 #ifdef CONFIG_B43_SSB
b43_sprom_fixup(struct ssb_bus * bus)5523 static void b43_sprom_fixup(struct ssb_bus *bus)
5524 {
5525 struct pci_dev *pdev;
5526
5527 /* boardflags workarounds */
5528 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
5529 bus->chip_id == 0x4301 && bus->sprom.board_rev == 0x74)
5530 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
5531 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
5532 bus->boardinfo.type == 0x4E && bus->sprom.board_rev > 0x40)
5533 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
5534 if (bus->bustype == SSB_BUSTYPE_PCI) {
5535 pdev = bus->host_pci;
5536 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
5537 IS_PDEV(pdev, BROADCOM, 0x4320, DELL, 0x0003) ||
5538 IS_PDEV(pdev, BROADCOM, 0x4320, HP, 0x12f8) ||
5539 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
5540 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
5541 IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
5542 IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
5543 bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
5544 }
5545 }
5546
b43_wireless_exit(struct b43_bus_dev * dev,struct b43_wl * wl)5547 static void b43_wireless_exit(struct b43_bus_dev *dev, struct b43_wl *wl)
5548 {
5549 struct ieee80211_hw *hw = wl->hw;
5550
5551 ssb_set_devtypedata(dev->sdev, NULL);
5552 ieee80211_free_hw(hw);
5553 }
5554 #endif
5555
b43_wireless_init(struct b43_bus_dev * dev)5556 static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev)
5557 {
5558 struct ssb_sprom *sprom = dev->bus_sprom;
5559 struct ieee80211_hw *hw;
5560 struct b43_wl *wl;
5561 char chip_name[6];
5562 int queue_num;
5563
5564 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
5565 if (!hw) {
5566 b43err(NULL, "Could not allocate ieee80211 device\n");
5567 return ERR_PTR(-ENOMEM);
5568 }
5569 wl = hw_to_b43_wl(hw);
5570
5571 /* fill hw info */
5572 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
5573 ieee80211_hw_set(hw, SIGNAL_DBM);
5574 ieee80211_hw_set(hw, MFP_CAPABLE);
5575 hw->wiphy->interface_modes =
5576 BIT(NL80211_IFTYPE_AP) |
5577 BIT(NL80211_IFTYPE_MESH_POINT) |
5578 BIT(NL80211_IFTYPE_STATION) |
5579 BIT(NL80211_IFTYPE_ADHOC);
5580
5581 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
5582
5583 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
5584
5585 wl->hw_registered = false;
5586 hw->max_rates = 2;
5587 SET_IEEE80211_DEV(hw, dev->dev);
5588 if (is_valid_ether_addr(sprom->et1mac))
5589 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
5590 else
5591 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
5592
5593 /* Initialize struct b43_wl */
5594 wl->hw = hw;
5595 mutex_init(&wl->mutex);
5596 spin_lock_init(&wl->hardirq_lock);
5597 spin_lock_init(&wl->beacon_lock);
5598 INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
5599 INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
5600 INIT_WORK(&wl->tx_work, b43_tx_work);
5601
5602 /* Initialize queues and flags. */
5603 for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
5604 skb_queue_head_init(&wl->tx_queue[queue_num]);
5605 wl->tx_queue_stopped[queue_num] = false;
5606 }
5607
5608 snprintf(chip_name, ARRAY_SIZE(chip_name),
5609 (dev->chip_id > 0x9999) ? "%d" : "%04X", dev->chip_id);
5610 b43info(wl, "Broadcom %s WLAN found (core revision %u)\n", chip_name,
5611 dev->core_rev);
5612 return wl;
5613 }
5614
5615 #ifdef CONFIG_B43_BCMA
b43_bcma_probe(struct bcma_device * core)5616 static int b43_bcma_probe(struct bcma_device *core)
5617 {
5618 struct b43_bus_dev *dev;
5619 struct b43_wl *wl;
5620 int err;
5621
5622 if (!modparam_allhwsupport &&
5623 (core->id.rev == 0x17 || core->id.rev == 0x18)) {
5624 pr_err("Support for cores revisions 0x17 and 0x18 disabled by module param allhwsupport=0. Try b43.allhwsupport=1\n");
5625 return -ENOTSUPP;
5626 }
5627
5628 dev = b43_bus_dev_bcma_init(core);
5629 if (!dev)
5630 return -ENODEV;
5631
5632 wl = b43_wireless_init(dev);
5633 if (IS_ERR(wl)) {
5634 err = PTR_ERR(wl);
5635 goto bcma_out;
5636 }
5637
5638 err = b43_one_core_attach(dev, wl);
5639 if (err)
5640 goto bcma_err_wireless_exit;
5641
5642 /* setup and start work to load firmware */
5643 INIT_WORK(&wl->firmware_load, b43_request_firmware);
5644 schedule_work(&wl->firmware_load);
5645
5646 return err;
5647
5648 bcma_err_wireless_exit:
5649 ieee80211_free_hw(wl->hw);
5650 bcma_out:
5651 kfree(dev);
5652 return err;
5653 }
5654
b43_bcma_remove(struct bcma_device * core)5655 static void b43_bcma_remove(struct bcma_device *core)
5656 {
5657 struct b43_wldev *wldev = bcma_get_drvdata(core);
5658 struct b43_wl *wl = wldev->wl;
5659
5660 /* We must cancel any work here before unregistering from ieee80211,
5661 * as the ieee80211 unreg will destroy the workqueue. */
5662 cancel_work_sync(&wldev->restart_work);
5663 cancel_work_sync(&wl->firmware_load);
5664
5665 B43_WARN_ON(!wl);
5666 if (!wldev->fw.ucode.data)
5667 return; /* NULL if firmware never loaded */
5668 if (wl->current_dev == wldev && wl->hw_registered) {
5669 b43_leds_stop(wldev);
5670 ieee80211_unregister_hw(wl->hw);
5671 }
5672
5673 b43_one_core_detach(wldev->dev);
5674
5675 /* Unregister HW RNG driver */
5676 b43_rng_exit(wl);
5677
5678 b43_leds_unregister(wl);
5679 ieee80211_free_hw(wl->hw);
5680 kfree(wldev->dev);
5681 }
5682
5683 static struct bcma_driver b43_bcma_driver = {
5684 .name = KBUILD_MODNAME,
5685 .id_table = b43_bcma_tbl,
5686 .probe = b43_bcma_probe,
5687 .remove = b43_bcma_remove,
5688 };
5689 #endif
5690
5691 #ifdef CONFIG_B43_SSB
5692 static
b43_ssb_probe(struct ssb_device * sdev,const struct ssb_device_id * id)5693 int b43_ssb_probe(struct ssb_device *sdev, const struct ssb_device_id *id)
5694 {
5695 struct b43_bus_dev *dev;
5696 struct b43_wl *wl;
5697 int err;
5698
5699 dev = b43_bus_dev_ssb_init(sdev);
5700 if (!dev)
5701 return -ENOMEM;
5702
5703 wl = ssb_get_devtypedata(sdev);
5704 if (wl) {
5705 b43err(NULL, "Dual-core devices are not supported\n");
5706 err = -ENOTSUPP;
5707 goto err_ssb_kfree_dev;
5708 }
5709
5710 b43_sprom_fixup(sdev->bus);
5711
5712 wl = b43_wireless_init(dev);
5713 if (IS_ERR(wl)) {
5714 err = PTR_ERR(wl);
5715 goto err_ssb_kfree_dev;
5716 }
5717 ssb_set_devtypedata(sdev, wl);
5718 B43_WARN_ON(ssb_get_devtypedata(sdev) != wl);
5719
5720 err = b43_one_core_attach(dev, wl);
5721 if (err)
5722 goto err_ssb_wireless_exit;
5723
5724 /* setup and start work to load firmware */
5725 INIT_WORK(&wl->firmware_load, b43_request_firmware);
5726 schedule_work(&wl->firmware_load);
5727
5728 return err;
5729
5730 err_ssb_wireless_exit:
5731 b43_wireless_exit(dev, wl);
5732 err_ssb_kfree_dev:
5733 kfree(dev);
5734 return err;
5735 }
5736
b43_ssb_remove(struct ssb_device * sdev)5737 static void b43_ssb_remove(struct ssb_device *sdev)
5738 {
5739 struct b43_wl *wl = ssb_get_devtypedata(sdev);
5740 struct b43_wldev *wldev = ssb_get_drvdata(sdev);
5741 struct b43_bus_dev *dev = wldev->dev;
5742
5743 /* We must cancel any work here before unregistering from ieee80211,
5744 * as the ieee80211 unreg will destroy the workqueue. */
5745 cancel_work_sync(&wldev->restart_work);
5746 cancel_work_sync(&wl->firmware_load);
5747
5748 B43_WARN_ON(!wl);
5749 if (!wldev->fw.ucode.data)
5750 return; /* NULL if firmware never loaded */
5751 if (wl->current_dev == wldev && wl->hw_registered) {
5752 b43_leds_stop(wldev);
5753 ieee80211_unregister_hw(wl->hw);
5754 }
5755
5756 b43_one_core_detach(dev);
5757
5758 /* Unregister HW RNG driver */
5759 b43_rng_exit(wl);
5760
5761 b43_leds_unregister(wl);
5762 b43_wireless_exit(dev, wl);
5763 kfree(dev);
5764 }
5765
5766 static struct ssb_driver b43_ssb_driver = {
5767 .name = KBUILD_MODNAME,
5768 .id_table = b43_ssb_tbl,
5769 .probe = b43_ssb_probe,
5770 .remove = b43_ssb_remove,
5771 };
5772 #endif /* CONFIG_B43_SSB */
5773
5774 /* Perform a hardware reset. This can be called from any context. */
b43_controller_restart(struct b43_wldev * dev,const char * reason)5775 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5776 {
5777 /* Must avoid requeueing, if we are in shutdown. */
5778 if (b43_status(dev) < B43_STAT_INITIALIZED)
5779 return;
5780 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5781 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5782 }
5783
b43_print_driverinfo(void)5784 static void b43_print_driverinfo(void)
5785 {
5786 const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5787 *feat_leds = "", *feat_sdio = "";
5788
5789 #ifdef CONFIG_B43_PCI_AUTOSELECT
5790 feat_pci = "P";
5791 #endif
5792 #ifdef CONFIG_B43_PCMCIA
5793 feat_pcmcia = "M";
5794 #endif
5795 #ifdef CONFIG_B43_PHY_N
5796 feat_nphy = "N";
5797 #endif
5798 #ifdef CONFIG_B43_LEDS
5799 feat_leds = "L";
5800 #endif
5801 #ifdef CONFIG_B43_SDIO
5802 feat_sdio = "S";
5803 #endif
5804 printk(KERN_INFO "Broadcom 43xx driver loaded "
5805 "[ Features: %s%s%s%s%s ]\n",
5806 feat_pci, feat_pcmcia, feat_nphy,
5807 feat_leds, feat_sdio);
5808 }
5809
b43_init(void)5810 static int __init b43_init(void)
5811 {
5812 int err;
5813
5814 b43_debugfs_init();
5815 err = b43_sdio_init();
5816 if (err)
5817 goto err_dfs_exit;
5818 #ifdef CONFIG_B43_BCMA
5819 err = bcma_driver_register(&b43_bcma_driver);
5820 if (err)
5821 goto err_sdio_exit;
5822 #endif
5823 #ifdef CONFIG_B43_SSB
5824 err = ssb_driver_register(&b43_ssb_driver);
5825 if (err)
5826 goto err_bcma_driver_exit;
5827 #endif
5828 b43_print_driverinfo();
5829
5830 return err;
5831
5832 #ifdef CONFIG_B43_SSB
5833 err_bcma_driver_exit:
5834 #endif
5835 #ifdef CONFIG_B43_BCMA
5836 bcma_driver_unregister(&b43_bcma_driver);
5837 err_sdio_exit:
5838 #endif
5839 b43_sdio_exit();
5840 err_dfs_exit:
5841 b43_debugfs_exit();
5842 return err;
5843 }
5844
b43_exit(void)5845 static void __exit b43_exit(void)
5846 {
5847 #ifdef CONFIG_B43_SSB
5848 ssb_driver_unregister(&b43_ssb_driver);
5849 #endif
5850 #ifdef CONFIG_B43_BCMA
5851 bcma_driver_unregister(&b43_bcma_driver);
5852 #endif
5853 b43_sdio_exit();
5854 b43_debugfs_exit();
5855 }
5856
5857 module_init(b43_init)
5858 module_exit(b43_exit)
5859