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1 | /* |
2 | ||
3 | Broadcom B43 wireless driver | |
4 | ||
5 | Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> | |
1f21ad2a | 6 | Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it> |
e4d6b795 MB |
7 | Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de> |
8 | Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> | |
9 | Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> | |
10 | ||
11 | Some parts of the code in this file are derived from the ipw2200 | |
12 | driver Copyright(c) 2003 - 2004 Intel Corporation. | |
13 | ||
14 | This program is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; see the file COPYING. If not, write to | |
26 | the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, | |
27 | Boston, MA 02110-1301, USA. | |
28 | ||
29 | */ | |
30 | ||
31 | #include <linux/delay.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/if_arp.h> | |
35 | #include <linux/etherdevice.h> | |
36 | #include <linux/version.h> | |
37 | #include <linux/firmware.h> | |
38 | #include <linux/wireless.h> | |
39 | #include <linux/workqueue.h> | |
40 | #include <linux/skbuff.h> | |
41 | #include <linux/dma-mapping.h> | |
42 | #include <asm/unaligned.h> | |
43 | ||
44 | #include "b43.h" | |
45 | #include "main.h" | |
46 | #include "debugfs.h" | |
47 | #include "phy.h" | |
48 | #include "dma.h" | |
49 | #include "pio.h" | |
50 | #include "sysfs.h" | |
51 | #include "xmit.h" | |
e4d6b795 MB |
52 | #include "lo.h" |
53 | #include "pcmcia.h" | |
54 | ||
55 | MODULE_DESCRIPTION("Broadcom B43 wireless driver"); | |
56 | MODULE_AUTHOR("Martin Langer"); | |
57 | MODULE_AUTHOR("Stefano Brivio"); | |
58 | MODULE_AUTHOR("Michael Buesch"); | |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
61 | extern char *nvram_get(char *name); | |
62 | ||
63 | #if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO) | |
64 | static int modparam_pio; | |
65 | module_param_named(pio, modparam_pio, int, 0444); | |
66 | MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode"); | |
67 | #elif defined(CONFIG_B43_DMA) | |
68 | # define modparam_pio 0 | |
69 | #elif defined(CONFIG_B43_PIO) | |
70 | # define modparam_pio 1 | |
71 | #endif | |
72 | ||
73 | static int modparam_bad_frames_preempt; | |
74 | module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); | |
75 | MODULE_PARM_DESC(bad_frames_preempt, | |
76 | "enable(1) / disable(0) Bad Frames Preemption"); | |
77 | ||
e4d6b795 MB |
78 | static char modparam_fwpostfix[16]; |
79 | module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); | |
80 | MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load."); | |
81 | ||
e4d6b795 MB |
82 | static int modparam_hwpctl; |
83 | module_param_named(hwpctl, modparam_hwpctl, int, 0444); | |
84 | MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)"); | |
85 | ||
86 | static int modparam_nohwcrypt; | |
87 | module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); | |
88 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); | |
89 | ||
90 | static const struct ssb_device_id b43_ssb_tbl[] = { | |
91 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5), | |
92 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6), | |
93 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7), | |
94 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9), | |
95 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10), | |
013978b6 | 96 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13), |
e4d6b795 MB |
97 | SSB_DEVTABLE_END |
98 | }; | |
99 | ||
100 | MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl); | |
101 | ||
102 | /* Channel and ratetables are shared for all devices. | |
103 | * They can't be const, because ieee80211 puts some precalculated | |
104 | * data in there. This data is the same for all devices, so we don't | |
105 | * get concurrency issues */ | |
106 | #define RATETAB_ENT(_rateid, _flags) \ | |
107 | { \ | |
108 | .rate = B43_RATE_TO_BASE100KBPS(_rateid), \ | |
109 | .val = (_rateid), \ | |
110 | .val2 = (_rateid), \ | |
111 | .flags = (_flags), \ | |
112 | } | |
113 | static struct ieee80211_rate __b43_ratetable[] = { | |
114 | RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK), | |
115 | RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2), | |
116 | RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2), | |
117 | RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2), | |
118 | RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM), | |
119 | RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM), | |
120 | RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM), | |
121 | RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM), | |
122 | RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM), | |
123 | RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM), | |
124 | RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM), | |
125 | RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM), | |
126 | }; | |
127 | ||
128 | #define b43_a_ratetable (__b43_ratetable + 4) | |
129 | #define b43_a_ratetable_size 8 | |
130 | #define b43_b_ratetable (__b43_ratetable + 0) | |
131 | #define b43_b_ratetable_size 4 | |
132 | #define b43_g_ratetable (__b43_ratetable + 0) | |
133 | #define b43_g_ratetable_size 12 | |
134 | ||
135 | #define CHANTAB_ENT(_chanid, _freq) \ | |
136 | { \ | |
137 | .chan = (_chanid), \ | |
138 | .freq = (_freq), \ | |
139 | .val = (_chanid), \ | |
140 | .flag = IEEE80211_CHAN_W_SCAN | \ | |
141 | IEEE80211_CHAN_W_ACTIVE_SCAN | \ | |
142 | IEEE80211_CHAN_W_IBSS, \ | |
143 | .power_level = 0xFF, \ | |
144 | .antenna_max = 0xFF, \ | |
145 | } | |
146 | static struct ieee80211_channel b43_bg_chantable[] = { | |
147 | CHANTAB_ENT(1, 2412), | |
148 | CHANTAB_ENT(2, 2417), | |
149 | CHANTAB_ENT(3, 2422), | |
150 | CHANTAB_ENT(4, 2427), | |
151 | CHANTAB_ENT(5, 2432), | |
152 | CHANTAB_ENT(6, 2437), | |
153 | CHANTAB_ENT(7, 2442), | |
154 | CHANTAB_ENT(8, 2447), | |
155 | CHANTAB_ENT(9, 2452), | |
156 | CHANTAB_ENT(10, 2457), | |
157 | CHANTAB_ENT(11, 2462), | |
158 | CHANTAB_ENT(12, 2467), | |
159 | CHANTAB_ENT(13, 2472), | |
160 | CHANTAB_ENT(14, 2484), | |
161 | }; | |
162 | ||
163 | #define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable) | |
164 | static struct ieee80211_channel b43_a_chantable[] = { | |
165 | CHANTAB_ENT(36, 5180), | |
166 | CHANTAB_ENT(40, 5200), | |
167 | CHANTAB_ENT(44, 5220), | |
168 | CHANTAB_ENT(48, 5240), | |
169 | CHANTAB_ENT(52, 5260), | |
170 | CHANTAB_ENT(56, 5280), | |
171 | CHANTAB_ENT(60, 5300), | |
172 | CHANTAB_ENT(64, 5320), | |
173 | CHANTAB_ENT(149, 5745), | |
174 | CHANTAB_ENT(153, 5765), | |
175 | CHANTAB_ENT(157, 5785), | |
176 | CHANTAB_ENT(161, 5805), | |
177 | CHANTAB_ENT(165, 5825), | |
178 | }; | |
179 | ||
180 | #define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable) | |
181 | ||
182 | static void b43_wireless_core_exit(struct b43_wldev *dev); | |
183 | static int b43_wireless_core_init(struct b43_wldev *dev); | |
184 | static void b43_wireless_core_stop(struct b43_wldev *dev); | |
185 | static int b43_wireless_core_start(struct b43_wldev *dev); | |
186 | ||
187 | static int b43_ratelimit(struct b43_wl *wl) | |
188 | { | |
189 | if (!wl || !wl->current_dev) | |
190 | return 1; | |
191 | if (b43_status(wl->current_dev) < B43_STAT_STARTED) | |
192 | return 1; | |
193 | /* We are up and running. | |
194 | * Ratelimit the messages to avoid DoS over the net. */ | |
195 | return net_ratelimit(); | |
196 | } | |
197 | ||
198 | void b43info(struct b43_wl *wl, const char *fmt, ...) | |
199 | { | |
200 | va_list args; | |
201 | ||
202 | if (!b43_ratelimit(wl)) | |
203 | return; | |
204 | va_start(args, fmt); | |
205 | printk(KERN_INFO "b43-%s: ", | |
206 | (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); | |
207 | vprintk(fmt, args); | |
208 | va_end(args); | |
209 | } | |
210 | ||
211 | void b43err(struct b43_wl *wl, const char *fmt, ...) | |
212 | { | |
213 | va_list args; | |
214 | ||
215 | if (!b43_ratelimit(wl)) | |
216 | return; | |
217 | va_start(args, fmt); | |
218 | printk(KERN_ERR "b43-%s ERROR: ", | |
219 | (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); | |
220 | vprintk(fmt, args); | |
221 | va_end(args); | |
222 | } | |
223 | ||
224 | void b43warn(struct b43_wl *wl, const char *fmt, ...) | |
225 | { | |
226 | va_list args; | |
227 | ||
228 | if (!b43_ratelimit(wl)) | |
229 | return; | |
230 | va_start(args, fmt); | |
231 | printk(KERN_WARNING "b43-%s warning: ", | |
232 | (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); | |
233 | vprintk(fmt, args); | |
234 | va_end(args); | |
235 | } | |
236 | ||
237 | #if B43_DEBUG | |
238 | void b43dbg(struct b43_wl *wl, const char *fmt, ...) | |
239 | { | |
240 | va_list args; | |
241 | ||
242 | va_start(args, fmt); | |
243 | printk(KERN_DEBUG "b43-%s debug: ", | |
244 | (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); | |
245 | vprintk(fmt, args); | |
246 | va_end(args); | |
247 | } | |
248 | #endif /* DEBUG */ | |
249 | ||
250 | static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val) | |
251 | { | |
252 | u32 macctl; | |
253 | ||
254 | B43_WARN_ON(offset % 4 != 0); | |
255 | ||
256 | macctl = b43_read32(dev, B43_MMIO_MACCTL); | |
257 | if (macctl & B43_MACCTL_BE) | |
258 | val = swab32(val); | |
259 | ||
260 | b43_write32(dev, B43_MMIO_RAM_CONTROL, offset); | |
261 | mmiowb(); | |
262 | b43_write32(dev, B43_MMIO_RAM_DATA, val); | |
263 | } | |
264 | ||
265 | static inline | |
266 | void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset) | |
267 | { | |
268 | u32 control; | |
269 | ||
270 | /* "offset" is the WORD offset. */ | |
271 | ||
272 | control = routing; | |
273 | control <<= 16; | |
274 | control |= offset; | |
275 | b43_write32(dev, B43_MMIO_SHM_CONTROL, control); | |
276 | } | |
277 | ||
278 | u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) | |
279 | { | |
280 | u32 ret; | |
281 | ||
282 | if (routing == B43_SHM_SHARED) { | |
283 | B43_WARN_ON(offset & 0x0001); | |
284 | if (offset & 0x0003) { | |
285 | /* Unaligned access */ | |
286 | b43_shm_control_word(dev, routing, offset >> 2); | |
287 | ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); | |
288 | ret <<= 16; | |
289 | b43_shm_control_word(dev, routing, (offset >> 2) + 1); | |
290 | ret |= b43_read16(dev, B43_MMIO_SHM_DATA); | |
291 | ||
292 | return ret; | |
293 | } | |
294 | offset >>= 2; | |
295 | } | |
296 | b43_shm_control_word(dev, routing, offset); | |
297 | ret = b43_read32(dev, B43_MMIO_SHM_DATA); | |
298 | ||
299 | return ret; | |
300 | } | |
301 | ||
302 | u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset) | |
303 | { | |
304 | u16 ret; | |
305 | ||
306 | if (routing == B43_SHM_SHARED) { | |
307 | B43_WARN_ON(offset & 0x0001); | |
308 | if (offset & 0x0003) { | |
309 | /* Unaligned access */ | |
310 | b43_shm_control_word(dev, routing, offset >> 2); | |
311 | ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); | |
312 | ||
313 | return ret; | |
314 | } | |
315 | offset >>= 2; | |
316 | } | |
317 | b43_shm_control_word(dev, routing, offset); | |
318 | ret = b43_read16(dev, B43_MMIO_SHM_DATA); | |
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
323 | void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) | |
324 | { | |
325 | if (routing == B43_SHM_SHARED) { | |
326 | B43_WARN_ON(offset & 0x0001); | |
327 | if (offset & 0x0003) { | |
328 | /* Unaligned access */ | |
329 | b43_shm_control_word(dev, routing, offset >> 2); | |
330 | mmiowb(); | |
331 | b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, | |
332 | (value >> 16) & 0xffff); | |
333 | mmiowb(); | |
334 | b43_shm_control_word(dev, routing, (offset >> 2) + 1); | |
335 | mmiowb(); | |
336 | b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff); | |
337 | return; | |
338 | } | |
339 | offset >>= 2; | |
340 | } | |
341 | b43_shm_control_word(dev, routing, offset); | |
342 | mmiowb(); | |
343 | b43_write32(dev, B43_MMIO_SHM_DATA, value); | |
344 | } | |
345 | ||
346 | void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) | |
347 | { | |
348 | if (routing == B43_SHM_SHARED) { | |
349 | B43_WARN_ON(offset & 0x0001); | |
350 | if (offset & 0x0003) { | |
351 | /* Unaligned access */ | |
352 | b43_shm_control_word(dev, routing, offset >> 2); | |
353 | mmiowb(); | |
354 | b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value); | |
355 | return; | |
356 | } | |
357 | offset >>= 2; | |
358 | } | |
359 | b43_shm_control_word(dev, routing, offset); | |
360 | mmiowb(); | |
361 | b43_write16(dev, B43_MMIO_SHM_DATA, value); | |
362 | } | |
363 | ||
364 | /* Read HostFlags */ | |
365 | u32 b43_hf_read(struct b43_wldev * dev) | |
366 | { | |
367 | u32 ret; | |
368 | ||
369 | ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI); | |
370 | ret <<= 16; | |
371 | ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO); | |
372 | ||
373 | return ret; | |
374 | } | |
375 | ||
376 | /* Write HostFlags */ | |
377 | void b43_hf_write(struct b43_wldev *dev, u32 value) | |
378 | { | |
379 | b43_shm_write16(dev, B43_SHM_SHARED, | |
380 | B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF)); | |
381 | b43_shm_write16(dev, B43_SHM_SHARED, | |
382 | B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16)); | |
383 | } | |
384 | ||
385 | void b43_tsf_read(struct b43_wldev *dev, u64 * tsf) | |
386 | { | |
387 | /* We need to be careful. As we read the TSF from multiple | |
388 | * registers, we should take care of register overflows. | |
389 | * In theory, the whole tsf read process should be atomic. | |
390 | * We try to be atomic here, by restaring the read process, | |
391 | * if any of the high registers changed (overflew). | |
392 | */ | |
393 | if (dev->dev->id.revision >= 3) { | |
394 | u32 low, high, high2; | |
395 | ||
396 | do { | |
397 | high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); | |
398 | low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW); | |
399 | high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); | |
400 | } while (unlikely(high != high2)); | |
401 | ||
402 | *tsf = high; | |
403 | *tsf <<= 32; | |
404 | *tsf |= low; | |
405 | } else { | |
406 | u64 tmp; | |
407 | u16 v0, v1, v2, v3; | |
408 | u16 test1, test2, test3; | |
409 | ||
410 | do { | |
411 | v3 = b43_read16(dev, B43_MMIO_TSF_3); | |
412 | v2 = b43_read16(dev, B43_MMIO_TSF_2); | |
413 | v1 = b43_read16(dev, B43_MMIO_TSF_1); | |
414 | v0 = b43_read16(dev, B43_MMIO_TSF_0); | |
415 | ||
416 | test3 = b43_read16(dev, B43_MMIO_TSF_3); | |
417 | test2 = b43_read16(dev, B43_MMIO_TSF_2); | |
418 | test1 = b43_read16(dev, B43_MMIO_TSF_1); | |
419 | } while (v3 != test3 || v2 != test2 || v1 != test1); | |
420 | ||
421 | *tsf = v3; | |
422 | *tsf <<= 48; | |
423 | tmp = v2; | |
424 | tmp <<= 32; | |
425 | *tsf |= tmp; | |
426 | tmp = v1; | |
427 | tmp <<= 16; | |
428 | *tsf |= tmp; | |
429 | *tsf |= v0; | |
430 | } | |
431 | } | |
432 | ||
433 | static void b43_time_lock(struct b43_wldev *dev) | |
434 | { | |
435 | u32 macctl; | |
436 | ||
437 | macctl = b43_read32(dev, B43_MMIO_MACCTL); | |
438 | macctl |= B43_MACCTL_TBTTHOLD; | |
439 | b43_write32(dev, B43_MMIO_MACCTL, macctl); | |
440 | /* Commit the write */ | |
441 | b43_read32(dev, B43_MMIO_MACCTL); | |
442 | } | |
443 | ||
444 | static void b43_time_unlock(struct b43_wldev *dev) | |
445 | { | |
446 | u32 macctl; | |
447 | ||
448 | macctl = b43_read32(dev, B43_MMIO_MACCTL); | |
449 | macctl &= ~B43_MACCTL_TBTTHOLD; | |
450 | b43_write32(dev, B43_MMIO_MACCTL, macctl); | |
451 | /* Commit the write */ | |
452 | b43_read32(dev, B43_MMIO_MACCTL); | |
453 | } | |
454 | ||
455 | static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf) | |
456 | { | |
457 | /* Be careful with the in-progress timer. | |
458 | * First zero out the low register, so we have a full | |
459 | * register-overflow duration to complete the operation. | |
460 | */ | |
461 | if (dev->dev->id.revision >= 3) { | |
462 | u32 lo = (tsf & 0x00000000FFFFFFFFULL); | |
463 | u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32; | |
464 | ||
465 | b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0); | |
466 | mmiowb(); | |
467 | b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi); | |
468 | mmiowb(); | |
469 | b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo); | |
470 | } else { | |
471 | u16 v0 = (tsf & 0x000000000000FFFFULL); | |
472 | u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16; | |
473 | u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32; | |
474 | u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48; | |
475 | ||
476 | b43_write16(dev, B43_MMIO_TSF_0, 0); | |
477 | mmiowb(); | |
478 | b43_write16(dev, B43_MMIO_TSF_3, v3); | |
479 | mmiowb(); | |
480 | b43_write16(dev, B43_MMIO_TSF_2, v2); | |
481 | mmiowb(); | |
482 | b43_write16(dev, B43_MMIO_TSF_1, v1); | |
483 | mmiowb(); | |
484 | b43_write16(dev, B43_MMIO_TSF_0, v0); | |
485 | } | |
486 | } | |
487 | ||
488 | void b43_tsf_write(struct b43_wldev *dev, u64 tsf) | |
489 | { | |
490 | b43_time_lock(dev); | |
491 | b43_tsf_write_locked(dev, tsf); | |
492 | b43_time_unlock(dev); | |
493 | } | |
494 | ||
495 | static | |
496 | void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac) | |
497 | { | |
498 | static const u8 zero_addr[ETH_ALEN] = { 0 }; | |
499 | u16 data; | |
500 | ||
501 | if (!mac) | |
502 | mac = zero_addr; | |
503 | ||
504 | offset |= 0x0020; | |
505 | b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset); | |
506 | ||
507 | data = mac[0]; | |
508 | data |= mac[1] << 8; | |
509 | b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); | |
510 | data = mac[2]; | |
511 | data |= mac[3] << 8; | |
512 | b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); | |
513 | data = mac[4]; | |
514 | data |= mac[5] << 8; | |
515 | b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); | |
516 | } | |
517 | ||
518 | static void b43_write_mac_bssid_templates(struct b43_wldev *dev) | |
519 | { | |
520 | const u8 *mac; | |
521 | const u8 *bssid; | |
522 | u8 mac_bssid[ETH_ALEN * 2]; | |
523 | int i; | |
524 | u32 tmp; | |
525 | ||
526 | bssid = dev->wl->bssid; | |
527 | mac = dev->wl->mac_addr; | |
528 | ||
529 | b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid); | |
530 | ||
531 | memcpy(mac_bssid, mac, ETH_ALEN); | |
532 | memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN); | |
533 | ||
534 | /* Write our MAC address and BSSID to template ram */ | |
535 | for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) { | |
536 | tmp = (u32) (mac_bssid[i + 0]); | |
537 | tmp |= (u32) (mac_bssid[i + 1]) << 8; | |
538 | tmp |= (u32) (mac_bssid[i + 2]) << 16; | |
539 | tmp |= (u32) (mac_bssid[i + 3]) << 24; | |
540 | b43_ram_write(dev, 0x20 + i, tmp); | |
541 | } | |
542 | } | |
543 | ||
4150c572 | 544 | static void b43_upload_card_macaddress(struct b43_wldev *dev) |
e4d6b795 | 545 | { |
e4d6b795 | 546 | b43_write_mac_bssid_templates(dev); |
4150c572 | 547 | b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr); |
e4d6b795 MB |
548 | } |
549 | ||
550 | static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time) | |
551 | { | |
552 | /* slot_time is in usec. */ | |
553 | if (dev->phy.type != B43_PHYTYPE_G) | |
554 | return; | |
555 | b43_write16(dev, 0x684, 510 + slot_time); | |
556 | b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time); | |
557 | } | |
558 | ||
559 | static void b43_short_slot_timing_enable(struct b43_wldev *dev) | |
560 | { | |
561 | b43_set_slot_time(dev, 9); | |
562 | dev->short_slot = 1; | |
563 | } | |
564 | ||
565 | static void b43_short_slot_timing_disable(struct b43_wldev *dev) | |
566 | { | |
567 | b43_set_slot_time(dev, 20); | |
568 | dev->short_slot = 0; | |
569 | } | |
570 | ||
571 | /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable. | |
572 | * Returns the _previously_ enabled IRQ mask. | |
573 | */ | |
574 | static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask) | |
575 | { | |
576 | u32 old_mask; | |
577 | ||
578 | old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); | |
579 | b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask); | |
580 | ||
581 | return old_mask; | |
582 | } | |
583 | ||
584 | /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable. | |
585 | * Returns the _previously_ enabled IRQ mask. | |
586 | */ | |
587 | static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask) | |
588 | { | |
589 | u32 old_mask; | |
590 | ||
591 | old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); | |
592 | b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask); | |
593 | ||
594 | return old_mask; | |
595 | } | |
596 | ||
597 | /* Synchronize IRQ top- and bottom-half. | |
598 | * IRQs must be masked before calling this. | |
599 | * This must not be called with the irq_lock held. | |
600 | */ | |
601 | static void b43_synchronize_irq(struct b43_wldev *dev) | |
602 | { | |
603 | synchronize_irq(dev->dev->irq); | |
604 | tasklet_kill(&dev->isr_tasklet); | |
605 | } | |
606 | ||
607 | /* DummyTransmission function, as documented on | |
608 | * http://bcm-specs.sipsolutions.net/DummyTransmission | |
609 | */ | |
610 | void b43_dummy_transmission(struct b43_wldev *dev) | |
611 | { | |
612 | struct b43_phy *phy = &dev->phy; | |
613 | unsigned int i, max_loop; | |
614 | u16 value; | |
615 | u32 buffer[5] = { | |
616 | 0x00000000, | |
617 | 0x00D40000, | |
618 | 0x00000000, | |
619 | 0x01000000, | |
620 | 0x00000000, | |
621 | }; | |
622 | ||
623 | switch (phy->type) { | |
624 | case B43_PHYTYPE_A: | |
625 | max_loop = 0x1E; | |
626 | buffer[0] = 0x000201CC; | |
627 | break; | |
628 | case B43_PHYTYPE_B: | |
629 | case B43_PHYTYPE_G: | |
630 | max_loop = 0xFA; | |
631 | buffer[0] = 0x000B846E; | |
632 | break; | |
633 | default: | |
634 | B43_WARN_ON(1); | |
635 | return; | |
636 | } | |
637 | ||
638 | for (i = 0; i < 5; i++) | |
639 | b43_ram_write(dev, i * 4, buffer[i]); | |
640 | ||
641 | /* Commit writes */ | |
642 | b43_read32(dev, B43_MMIO_MACCTL); | |
643 | ||
644 | b43_write16(dev, 0x0568, 0x0000); | |
645 | b43_write16(dev, 0x07C0, 0x0000); | |
646 | value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0); | |
647 | b43_write16(dev, 0x050C, value); | |
648 | b43_write16(dev, 0x0508, 0x0000); | |
649 | b43_write16(dev, 0x050A, 0x0000); | |
650 | b43_write16(dev, 0x054C, 0x0000); | |
651 | b43_write16(dev, 0x056A, 0x0014); | |
652 | b43_write16(dev, 0x0568, 0x0826); | |
653 | b43_write16(dev, 0x0500, 0x0000); | |
654 | b43_write16(dev, 0x0502, 0x0030); | |
655 | ||
656 | if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) | |
657 | b43_radio_write16(dev, 0x0051, 0x0017); | |
658 | for (i = 0x00; i < max_loop; i++) { | |
659 | value = b43_read16(dev, 0x050E); | |
660 | if (value & 0x0080) | |
661 | break; | |
662 | udelay(10); | |
663 | } | |
664 | for (i = 0x00; i < 0x0A; i++) { | |
665 | value = b43_read16(dev, 0x050E); | |
666 | if (value & 0x0400) | |
667 | break; | |
668 | udelay(10); | |
669 | } | |
670 | for (i = 0x00; i < 0x0A; i++) { | |
671 | value = b43_read16(dev, 0x0690); | |
672 | if (!(value & 0x0100)) | |
673 | break; | |
674 | udelay(10); | |
675 | } | |
676 | if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) | |
677 | b43_radio_write16(dev, 0x0051, 0x0037); | |
678 | } | |
679 | ||
680 | static void key_write(struct b43_wldev *dev, | |
681 | u8 index, u8 algorithm, const u8 * key) | |
682 | { | |
683 | unsigned int i; | |
684 | u32 offset; | |
685 | u16 value; | |
686 | u16 kidx; | |
687 | ||
688 | /* Key index/algo block */ | |
689 | kidx = b43_kidx_to_fw(dev, index); | |
690 | value = ((kidx << 4) | algorithm); | |
691 | b43_shm_write16(dev, B43_SHM_SHARED, | |
692 | B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value); | |
693 | ||
694 | /* Write the key to the Key Table Pointer offset */ | |
695 | offset = dev->ktp + (index * B43_SEC_KEYSIZE); | |
696 | for (i = 0; i < B43_SEC_KEYSIZE; i += 2) { | |
697 | value = key[i]; | |
698 | value |= (u16) (key[i + 1]) << 8; | |
699 | b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value); | |
700 | } | |
701 | } | |
702 | ||
703 | static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr) | |
704 | { | |
705 | u32 addrtmp[2] = { 0, 0, }; | |
706 | u8 per_sta_keys_start = 8; | |
707 | ||
708 | if (b43_new_kidx_api(dev)) | |
709 | per_sta_keys_start = 4; | |
710 | ||
711 | B43_WARN_ON(index < per_sta_keys_start); | |
712 | /* We have two default TX keys and possibly two default RX keys. | |
713 | * Physical mac 0 is mapped to physical key 4 or 8, depending | |
714 | * on the firmware version. | |
715 | * So we must adjust the index here. | |
716 | */ | |
717 | index -= per_sta_keys_start; | |
718 | ||
719 | if (addr) { | |
720 | addrtmp[0] = addr[0]; | |
721 | addrtmp[0] |= ((u32) (addr[1]) << 8); | |
722 | addrtmp[0] |= ((u32) (addr[2]) << 16); | |
723 | addrtmp[0] |= ((u32) (addr[3]) << 24); | |
724 | addrtmp[1] = addr[4]; | |
725 | addrtmp[1] |= ((u32) (addr[5]) << 8); | |
726 | } | |
727 | ||
728 | if (dev->dev->id.revision >= 5) { | |
729 | /* Receive match transmitter address mechanism */ | |
730 | b43_shm_write32(dev, B43_SHM_RCMTA, | |
731 | (index * 2) + 0, addrtmp[0]); | |
732 | b43_shm_write16(dev, B43_SHM_RCMTA, | |
733 | (index * 2) + 1, addrtmp[1]); | |
734 | } else { | |
735 | /* RXE (Receive Engine) and | |
736 | * PSM (Programmable State Machine) mechanism | |
737 | */ | |
738 | if (index < 8) { | |
739 | /* TODO write to RCM 16, 19, 22 and 25 */ | |
740 | } else { | |
741 | b43_shm_write32(dev, B43_SHM_SHARED, | |
742 | B43_SHM_SH_PSM + (index * 6) + 0, | |
743 | addrtmp[0]); | |
744 | b43_shm_write16(dev, B43_SHM_SHARED, | |
745 | B43_SHM_SH_PSM + (index * 6) + 4, | |
746 | addrtmp[1]); | |
747 | } | |
748 | } | |
749 | } | |
750 | ||
751 | static void do_key_write(struct b43_wldev *dev, | |
752 | u8 index, u8 algorithm, | |
753 | const u8 * key, size_t key_len, const u8 * mac_addr) | |
754 | { | |
755 | u8 buf[B43_SEC_KEYSIZE] = { 0, }; | |
756 | u8 per_sta_keys_start = 8; | |
757 | ||
758 | if (b43_new_kidx_api(dev)) | |
759 | per_sta_keys_start = 4; | |
760 | ||
761 | B43_WARN_ON(index >= dev->max_nr_keys); | |
762 | B43_WARN_ON(key_len > B43_SEC_KEYSIZE); | |
763 | ||
764 | if (index >= per_sta_keys_start) | |
765 | keymac_write(dev, index, NULL); /* First zero out mac. */ | |
766 | if (key) | |
767 | memcpy(buf, key, key_len); | |
768 | key_write(dev, index, algorithm, buf); | |
769 | if (index >= per_sta_keys_start) | |
770 | keymac_write(dev, index, mac_addr); | |
771 | ||
772 | dev->key[index].algorithm = algorithm; | |
773 | } | |
774 | ||
775 | static int b43_key_write(struct b43_wldev *dev, | |
776 | int index, u8 algorithm, | |
777 | const u8 * key, size_t key_len, | |
778 | const u8 * mac_addr, | |
779 | struct ieee80211_key_conf *keyconf) | |
780 | { | |
781 | int i; | |
782 | int sta_keys_start; | |
783 | ||
784 | if (key_len > B43_SEC_KEYSIZE) | |
785 | return -EINVAL; | |
786 | for (i = 0; i < dev->max_nr_keys; i++) { | |
787 | /* Check that we don't already have this key. */ | |
788 | B43_WARN_ON(dev->key[i].keyconf == keyconf); | |
789 | } | |
790 | if (index < 0) { | |
791 | /* Either pairwise key or address is 00:00:00:00:00:00 | |
792 | * for transmit-only keys. Search the index. */ | |
793 | if (b43_new_kidx_api(dev)) | |
794 | sta_keys_start = 4; | |
795 | else | |
796 | sta_keys_start = 8; | |
797 | for (i = sta_keys_start; i < dev->max_nr_keys; i++) { | |
798 | if (!dev->key[i].keyconf) { | |
799 | /* found empty */ | |
800 | index = i; | |
801 | break; | |
802 | } | |
803 | } | |
804 | if (index < 0) { | |
805 | b43err(dev->wl, "Out of hardware key memory\n"); | |
806 | return -ENOSPC; | |
807 | } | |
808 | } else | |
809 | B43_WARN_ON(index > 3); | |
810 | ||
811 | do_key_write(dev, index, algorithm, key, key_len, mac_addr); | |
812 | if ((index <= 3) && !b43_new_kidx_api(dev)) { | |
813 | /* Default RX key */ | |
814 | B43_WARN_ON(mac_addr); | |
815 | do_key_write(dev, index + 4, algorithm, key, key_len, NULL); | |
816 | } | |
817 | keyconf->hw_key_idx = index; | |
818 | dev->key[index].keyconf = keyconf; | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
823 | static int b43_key_clear(struct b43_wldev *dev, int index) | |
824 | { | |
825 | if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys))) | |
826 | return -EINVAL; | |
827 | do_key_write(dev, index, B43_SEC_ALGO_NONE, | |
828 | NULL, B43_SEC_KEYSIZE, NULL); | |
829 | if ((index <= 3) && !b43_new_kidx_api(dev)) { | |
830 | do_key_write(dev, index + 4, B43_SEC_ALGO_NONE, | |
831 | NULL, B43_SEC_KEYSIZE, NULL); | |
832 | } | |
833 | dev->key[index].keyconf = NULL; | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | static void b43_clear_keys(struct b43_wldev *dev) | |
839 | { | |
840 | int i; | |
841 | ||
842 | for (i = 0; i < dev->max_nr_keys; i++) | |
843 | b43_key_clear(dev, i); | |
844 | } | |
845 | ||
846 | void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags) | |
847 | { | |
848 | u32 macctl; | |
849 | u16 ucstat; | |
850 | bool hwps; | |
851 | bool awake; | |
852 | int i; | |
853 | ||
854 | B43_WARN_ON((ps_flags & B43_PS_ENABLED) && | |
855 | (ps_flags & B43_PS_DISABLED)); | |
856 | B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP)); | |
857 | ||
858 | if (ps_flags & B43_PS_ENABLED) { | |
859 | hwps = 1; | |
860 | } else if (ps_flags & B43_PS_DISABLED) { | |
861 | hwps = 0; | |
862 | } else { | |
863 | //TODO: If powersave is not off and FIXME is not set and we are not in adhoc | |
864 | // and thus is not an AP and we are associated, set bit 25 | |
865 | } | |
866 | if (ps_flags & B43_PS_AWAKE) { | |
867 | awake = 1; | |
868 | } else if (ps_flags & B43_PS_ASLEEP) { | |
869 | awake = 0; | |
870 | } else { | |
871 | //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME, | |
872 | // or we are associated, or FIXME, or the latest PS-Poll packet sent was | |
873 | // successful, set bit26 | |
874 | } | |
875 | ||
876 | /* FIXME: For now we force awake-on and hwps-off */ | |
877 | hwps = 0; | |
878 | awake = 1; | |
879 | ||
880 | macctl = b43_read32(dev, B43_MMIO_MACCTL); | |
881 | if (hwps) | |
882 | macctl |= B43_MACCTL_HWPS; | |
883 | else | |
884 | macctl &= ~B43_MACCTL_HWPS; | |
885 | if (awake) | |
886 | macctl |= B43_MACCTL_AWAKE; | |
887 | else | |
888 | macctl &= ~B43_MACCTL_AWAKE; | |
889 | b43_write32(dev, B43_MMIO_MACCTL, macctl); | |
890 | /* Commit write */ | |
891 | b43_read32(dev, B43_MMIO_MACCTL); | |
892 | if (awake && dev->dev->id.revision >= 5) { | |
893 | /* Wait for the microcode to wake up. */ | |
894 | for (i = 0; i < 100; i++) { | |
895 | ucstat = b43_shm_read16(dev, B43_SHM_SHARED, | |
896 | B43_SHM_SH_UCODESTAT); | |
897 | if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP) | |
898 | break; | |
899 | udelay(10); | |
900 | } | |
901 | } | |
902 | } | |
903 | ||
904 | /* Turn the Analog ON/OFF */ | |
905 | static void b43_switch_analog(struct b43_wldev *dev, int on) | |
906 | { | |
907 | b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4); | |
908 | } | |
909 | ||
910 | void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags) | |
911 | { | |
912 | u32 tmslow; | |
913 | u32 macctl; | |
914 | ||
915 | flags |= B43_TMSLOW_PHYCLKEN; | |
916 | flags |= B43_TMSLOW_PHYRESET; | |
917 | ssb_device_enable(dev->dev, flags); | |
918 | msleep(2); /* Wait for the PLL to turn on. */ | |
919 | ||
920 | /* Now take the PHY out of Reset again */ | |
921 | tmslow = ssb_read32(dev->dev, SSB_TMSLOW); | |
922 | tmslow |= SSB_TMSLOW_FGC; | |
923 | tmslow &= ~B43_TMSLOW_PHYRESET; | |
924 | ssb_write32(dev->dev, SSB_TMSLOW, tmslow); | |
925 | ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ | |
926 | msleep(1); | |
927 | tmslow &= ~SSB_TMSLOW_FGC; | |
928 | ssb_write32(dev->dev, SSB_TMSLOW, tmslow); | |
929 | ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ | |
930 | msleep(1); | |
931 | ||
932 | /* Turn Analog ON */ | |
933 | b43_switch_analog(dev, 1); | |
934 | ||
935 | macctl = b43_read32(dev, B43_MMIO_MACCTL); | |
936 | macctl &= ~B43_MACCTL_GMODE; | |
937 | if (flags & B43_TMSLOW_GMODE) | |
938 | macctl |= B43_MACCTL_GMODE; | |
939 | macctl |= B43_MACCTL_IHR_ENABLED; | |
940 | b43_write32(dev, B43_MMIO_MACCTL, macctl); | |
941 | } | |
942 | ||
943 | static void handle_irq_transmit_status(struct b43_wldev *dev) | |
944 | { | |
945 | u32 v0, v1; | |
946 | u16 tmp; | |
947 | struct b43_txstatus stat; | |
948 | ||
949 | while (1) { | |
950 | v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0); | |
951 | if (!(v0 & 0x00000001)) | |
952 | break; | |
953 | v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1); | |
954 | ||
955 | stat.cookie = (v0 >> 16); | |
956 | stat.seq = (v1 & 0x0000FFFF); | |
957 | stat.phy_stat = ((v1 & 0x00FF0000) >> 16); | |
958 | tmp = (v0 & 0x0000FFFF); | |
959 | stat.frame_count = ((tmp & 0xF000) >> 12); | |
960 | stat.rts_count = ((tmp & 0x0F00) >> 8); | |
961 | stat.supp_reason = ((tmp & 0x001C) >> 2); | |
962 | stat.pm_indicated = !!(tmp & 0x0080); | |
963 | stat.intermediate = !!(tmp & 0x0040); | |
964 | stat.for_ampdu = !!(tmp & 0x0020); | |
965 | stat.acked = !!(tmp & 0x0002); | |
966 | ||
967 | b43_handle_txstatus(dev, &stat); | |
968 | } | |
969 | } | |
970 | ||
971 | static void drain_txstatus_queue(struct b43_wldev *dev) | |
972 | { | |
973 | u32 dummy; | |
974 | ||
975 | if (dev->dev->id.revision < 5) | |
976 | return; | |
977 | /* Read all entries from the microcode TXstatus FIFO | |
978 | * and throw them away. | |
979 | */ | |
980 | while (1) { | |
981 | dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0); | |
982 | if (!(dummy & 0x00000001)) | |
983 | break; | |
984 | dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1); | |
985 | } | |
986 | } | |
987 | ||
988 | static u32 b43_jssi_read(struct b43_wldev *dev) | |
989 | { | |
990 | u32 val = 0; | |
991 | ||
992 | val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A); | |
993 | val <<= 16; | |
994 | val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088); | |
995 | ||
996 | return val; | |
997 | } | |
998 | ||
999 | static void b43_jssi_write(struct b43_wldev *dev, u32 jssi) | |
1000 | { | |
1001 | b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF)); | |
1002 | b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16); | |
1003 | } | |
1004 | ||
1005 | static void b43_generate_noise_sample(struct b43_wldev *dev) | |
1006 | { | |
1007 | b43_jssi_write(dev, 0x7F7F7F7F); | |
1008 | b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, | |
1009 | b43_read32(dev, B43_MMIO_STATUS2_BITFIELD) | |
1010 | | (1 << 4)); | |
1011 | B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel); | |
1012 | } | |
1013 | ||
1014 | static void b43_calculate_link_quality(struct b43_wldev *dev) | |
1015 | { | |
1016 | /* Top half of Link Quality calculation. */ | |
1017 | ||
1018 | if (dev->noisecalc.calculation_running) | |
1019 | return; | |
1020 | dev->noisecalc.channel_at_start = dev->phy.channel; | |
1021 | dev->noisecalc.calculation_running = 1; | |
1022 | dev->noisecalc.nr_samples = 0; | |
1023 | ||
1024 | b43_generate_noise_sample(dev); | |
1025 | } | |
1026 | ||
1027 | static void handle_irq_noise(struct b43_wldev *dev) | |
1028 | { | |
1029 | struct b43_phy *phy = &dev->phy; | |
1030 | u16 tmp; | |
1031 | u8 noise[4]; | |
1032 | u8 i, j; | |
1033 | s32 average; | |
1034 | ||
1035 | /* Bottom half of Link Quality calculation. */ | |
1036 | ||
1037 | B43_WARN_ON(!dev->noisecalc.calculation_running); | |
1038 | if (dev->noisecalc.channel_at_start != phy->channel) | |
1039 | goto drop_calculation; | |
1a09404a | 1040 | *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev)); |
e4d6b795 MB |
1041 | if (noise[0] == 0x7F || noise[1] == 0x7F || |
1042 | noise[2] == 0x7F || noise[3] == 0x7F) | |
1043 | goto generate_new; | |
1044 | ||
1045 | /* Get the noise samples. */ | |
1046 | B43_WARN_ON(dev->noisecalc.nr_samples >= 8); | |
1047 | i = dev->noisecalc.nr_samples; | |
1048 | noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); | |
1049 | noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); | |
1050 | noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); | |
1051 | noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); | |
1052 | dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; | |
1053 | dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; | |
1054 | dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; | |
1055 | dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; | |
1056 | dev->noisecalc.nr_samples++; | |
1057 | if (dev->noisecalc.nr_samples == 8) { | |
1058 | /* Calculate the Link Quality by the noise samples. */ | |
1059 | average = 0; | |
1060 | for (i = 0; i < 8; i++) { | |
1061 | for (j = 0; j < 4; j++) | |
1062 | average += dev->noisecalc.samples[i][j]; | |
1063 | } | |
1064 | average /= (8 * 4); | |
1065 | average *= 125; | |
1066 | average += 64; | |
1067 | average /= 128; | |
1068 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C); | |
1069 | tmp = (tmp / 128) & 0x1F; | |
1070 | if (tmp >= 8) | |
1071 | average += 2; | |
1072 | else | |
1073 | average -= 25; | |
1074 | if (tmp == 8) | |
1075 | average -= 72; | |
1076 | else | |
1077 | average -= 48; | |
1078 | ||
1079 | dev->stats.link_noise = average; | |
1080 | drop_calculation: | |
1081 | dev->noisecalc.calculation_running = 0; | |
1082 | return; | |
1083 | } | |
1084 | generate_new: | |
1085 | b43_generate_noise_sample(dev); | |
1086 | } | |
1087 | ||
1088 | static void handle_irq_tbtt_indication(struct b43_wldev *dev) | |
1089 | { | |
1090 | if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) { | |
1091 | ///TODO: PS TBTT | |
1092 | } else { | |
1093 | if (1 /*FIXME: the last PSpoll frame was sent successfully */ ) | |
1094 | b43_power_saving_ctl_bits(dev, 0); | |
1095 | } | |
1096 | dev->reg124_set_0x4 = 0; | |
1097 | if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) | |
1098 | dev->reg124_set_0x4 = 1; | |
1099 | } | |
1100 | ||
1101 | static void handle_irq_atim_end(struct b43_wldev *dev) | |
1102 | { | |
1103 | if (!dev->reg124_set_0x4 /*FIXME rename this variable */ ) | |
1104 | return; | |
1105 | b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, | |
1106 | b43_read32(dev, B43_MMIO_STATUS2_BITFIELD) | |
1107 | | 0x4); | |
1108 | } | |
1109 | ||
1110 | static void handle_irq_pmq(struct b43_wldev *dev) | |
1111 | { | |
1112 | u32 tmp; | |
1113 | ||
1114 | //TODO: AP mode. | |
1115 | ||
1116 | while (1) { | |
1117 | tmp = b43_read32(dev, B43_MMIO_PS_STATUS); | |
1118 | if (!(tmp & 0x00000008)) | |
1119 | break; | |
1120 | } | |
1121 | /* 16bit write is odd, but correct. */ | |
1122 | b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002); | |
1123 | } | |
1124 | ||
1125 | static void b43_write_template_common(struct b43_wldev *dev, | |
1126 | const u8 * data, u16 size, | |
1127 | u16 ram_offset, | |
1128 | u16 shm_size_offset, u8 rate) | |
1129 | { | |
1130 | u32 i, tmp; | |
1131 | struct b43_plcp_hdr4 plcp; | |
1132 | ||
1133 | plcp.data = 0; | |
1134 | b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); | |
1135 | b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data)); | |
1136 | ram_offset += sizeof(u32); | |
1137 | /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet. | |
1138 | * So leave the first two bytes of the next write blank. | |
1139 | */ | |
1140 | tmp = (u32) (data[0]) << 16; | |
1141 | tmp |= (u32) (data[1]) << 24; | |
1142 | b43_ram_write(dev, ram_offset, tmp); | |
1143 | ram_offset += sizeof(u32); | |
1144 | for (i = 2; i < size; i += sizeof(u32)) { | |
1145 | tmp = (u32) (data[i + 0]); | |
1146 | if (i + 1 < size) | |
1147 | tmp |= (u32) (data[i + 1]) << 8; | |
1148 | if (i + 2 < size) | |
1149 | tmp |= (u32) (data[i + 2]) << 16; | |
1150 | if (i + 3 < size) | |
1151 | tmp |= (u32) (data[i + 3]) << 24; | |
1152 | b43_ram_write(dev, ram_offset + i - 2, tmp); | |
1153 | } | |
1154 | b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset, | |
1155 | size + sizeof(struct b43_plcp_hdr6)); | |
1156 | } | |
1157 | ||
1158 | static void b43_write_beacon_template(struct b43_wldev *dev, | |
1159 | u16 ram_offset, | |
1160 | u16 shm_size_offset, u8 rate) | |
1161 | { | |
1162 | int len; | |
1163 | const u8 *data; | |
1164 | ||
1165 | B43_WARN_ON(!dev->cached_beacon); | |
1166 | len = min((size_t) dev->cached_beacon->len, | |
1167 | 0x200 - sizeof(struct b43_plcp_hdr6)); | |
1168 | data = (const u8 *)(dev->cached_beacon->data); | |
1169 | b43_write_template_common(dev, data, | |
1170 | len, ram_offset, shm_size_offset, rate); | |
1171 | } | |
1172 | ||
1173 | static void b43_write_probe_resp_plcp(struct b43_wldev *dev, | |
1174 | u16 shm_offset, u16 size, u8 rate) | |
1175 | { | |
1176 | struct b43_plcp_hdr4 plcp; | |
1177 | u32 tmp; | |
1178 | __le16 dur; | |
1179 | ||
1180 | plcp.data = 0; | |
1181 | b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); | |
1182 | dur = ieee80211_generic_frame_duration(dev->wl->hw, | |
1183 | dev->wl->if_id, size, | |
1184 | B43_RATE_TO_BASE100KBPS(rate)); | |
1185 | /* Write PLCP in two parts and timing for packet transfer */ | |
1186 | tmp = le32_to_cpu(plcp.data); | |
1187 | b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF); | |
1188 | b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16); | |
1189 | b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur)); | |
1190 | } | |
1191 | ||
1192 | /* Instead of using custom probe response template, this function | |
1193 | * just patches custom beacon template by: | |
1194 | * 1) Changing packet type | |
1195 | * 2) Patching duration field | |
1196 | * 3) Stripping TIM | |
1197 | */ | |
1198 | static u8 *b43_generate_probe_resp(struct b43_wldev *dev, | |
1199 | u16 * dest_size, u8 rate) | |
1200 | { | |
1201 | const u8 *src_data; | |
1202 | u8 *dest_data; | |
1203 | u16 src_size, elem_size, src_pos, dest_pos; | |
1204 | __le16 dur; | |
1205 | struct ieee80211_hdr *hdr; | |
1206 | ||
1207 | B43_WARN_ON(!dev->cached_beacon); | |
1208 | src_size = dev->cached_beacon->len; | |
1209 | src_data = (const u8 *)dev->cached_beacon->data; | |
1210 | ||
1211 | if (unlikely(src_size < 0x24)) { | |
1212 | b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n"); | |
1213 | return NULL; | |
1214 | } | |
1215 | ||
1216 | dest_data = kmalloc(src_size, GFP_ATOMIC); | |
1217 | if (unlikely(!dest_data)) | |
1218 | return NULL; | |
1219 | ||
1220 | /* 0x24 is offset of first variable-len Information-Element | |
1221 | * in beacon frame. | |
1222 | */ | |
1223 | memcpy(dest_data, src_data, 0x24); | |
1224 | src_pos = dest_pos = 0x24; | |
1225 | for (; src_pos < src_size - 2; src_pos += elem_size) { | |
1226 | elem_size = src_data[src_pos + 1] + 2; | |
1227 | if (src_data[src_pos] != 0x05) { /* TIM */ | |
1228 | memcpy(dest_data + dest_pos, src_data + src_pos, | |
1229 | elem_size); | |
1230 | dest_pos += elem_size; | |
1231 | } | |
1232 | } | |
1233 | *dest_size = dest_pos; | |
1234 | hdr = (struct ieee80211_hdr *)dest_data; | |
1235 | ||
1236 | /* Set the frame control. */ | |
1237 | hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
1238 | IEEE80211_STYPE_PROBE_RESP); | |
1239 | dur = ieee80211_generic_frame_duration(dev->wl->hw, | |
1240 | dev->wl->if_id, *dest_size, | |
1241 | B43_RATE_TO_BASE100KBPS(rate)); | |
1242 | hdr->duration_id = dur; | |
1243 | ||
1244 | return dest_data; | |
1245 | } | |
1246 | ||
1247 | static void b43_write_probe_resp_template(struct b43_wldev *dev, | |
1248 | u16 ram_offset, | |
1249 | u16 shm_size_offset, u8 rate) | |
1250 | { | |
1251 | u8 *probe_resp_data; | |
1252 | u16 size; | |
1253 | ||
1254 | B43_WARN_ON(!dev->cached_beacon); | |
1255 | size = dev->cached_beacon->len; | |
1256 | probe_resp_data = b43_generate_probe_resp(dev, &size, rate); | |
1257 | if (unlikely(!probe_resp_data)) | |
1258 | return; | |
1259 | ||
1260 | /* Looks like PLCP headers plus packet timings are stored for | |
1261 | * all possible basic rates | |
1262 | */ | |
1263 | b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB); | |
1264 | b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB); | |
1265 | b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB); | |
1266 | b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB); | |
1267 | ||
1268 | size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6)); | |
1269 | b43_write_template_common(dev, probe_resp_data, | |
1270 | size, ram_offset, shm_size_offset, rate); | |
1271 | kfree(probe_resp_data); | |
1272 | } | |
1273 | ||
1274 | static int b43_refresh_cached_beacon(struct b43_wldev *dev, | |
1275 | struct sk_buff *beacon) | |
1276 | { | |
1277 | if (dev->cached_beacon) | |
1278 | kfree_skb(dev->cached_beacon); | |
1279 | dev->cached_beacon = beacon; | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | static void b43_update_templates(struct b43_wldev *dev) | |
1285 | { | |
1286 | u32 status; | |
1287 | ||
1288 | B43_WARN_ON(!dev->cached_beacon); | |
1289 | ||
1290 | b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB); | |
1291 | b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB); | |
1292 | b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB); | |
1293 | ||
1294 | status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD); | |
1295 | status |= 0x03; | |
1296 | b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); | |
1297 | } | |
1298 | ||
1299 | static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon) | |
1300 | { | |
1301 | int err; | |
1302 | ||
1303 | err = b43_refresh_cached_beacon(dev, beacon); | |
1304 | if (unlikely(err)) | |
1305 | return; | |
1306 | b43_update_templates(dev); | |
1307 | } | |
1308 | ||
1309 | static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len) | |
1310 | { | |
1311 | u32 tmp; | |
1312 | u16 i, len; | |
1313 | ||
1314 | len = min((u16) ssid_len, (u16) 0x100); | |
1315 | for (i = 0; i < len; i += sizeof(u32)) { | |
1316 | tmp = (u32) (ssid[i + 0]); | |
1317 | if (i + 1 < len) | |
1318 | tmp |= (u32) (ssid[i + 1]) << 8; | |
1319 | if (i + 2 < len) | |
1320 | tmp |= (u32) (ssid[i + 2]) << 16; | |
1321 | if (i + 3 < len) | |
1322 | tmp |= (u32) (ssid[i + 3]) << 24; | |
1323 | b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp); | |
1324 | } | |
1325 | b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len); | |
1326 | } | |
1327 | ||
1328 | static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int) | |
1329 | { | |
1330 | b43_time_lock(dev); | |
1331 | if (dev->dev->id.revision >= 3) { | |
1332 | b43_write32(dev, 0x188, (beacon_int << 16)); | |
1333 | } else { | |
1334 | b43_write16(dev, 0x606, (beacon_int >> 6)); | |
1335 | b43_write16(dev, 0x610, beacon_int); | |
1336 | } | |
1337 | b43_time_unlock(dev); | |
1338 | } | |
1339 | ||
1340 | static void handle_irq_beacon(struct b43_wldev *dev) | |
1341 | { | |
1342 | u32 status; | |
1343 | ||
1344 | if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) | |
1345 | return; | |
1346 | ||
1347 | dev->irq_savedstate &= ~B43_IRQ_BEACON; | |
1348 | status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD); | |
1349 | ||
1350 | if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) { | |
1351 | /* ACK beacon IRQ. */ | |
1352 | b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON); | |
1353 | dev->irq_savedstate |= B43_IRQ_BEACON; | |
1354 | if (dev->cached_beacon) | |
1355 | kfree_skb(dev->cached_beacon); | |
1356 | dev->cached_beacon = NULL; | |
1357 | return; | |
1358 | } | |
1359 | if (!(status & 0x1)) { | |
1360 | b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB); | |
1361 | status |= 0x1; | |
1362 | b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); | |
1363 | } | |
1364 | if (!(status & 0x2)) { | |
1365 | b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB); | |
1366 | status |= 0x2; | |
1367 | b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | static void handle_irq_ucode_debug(struct b43_wldev *dev) | |
1372 | { | |
1373 | //TODO | |
1374 | } | |
1375 | ||
1376 | /* Interrupt handler bottom-half */ | |
1377 | static void b43_interrupt_tasklet(struct b43_wldev *dev) | |
1378 | { | |
1379 | u32 reason; | |
1380 | u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; | |
1381 | u32 merged_dma_reason = 0; | |
21954c36 | 1382 | int i; |
e4d6b795 MB |
1383 | unsigned long flags; |
1384 | ||
1385 | spin_lock_irqsave(&dev->wl->irq_lock, flags); | |
1386 | ||
1387 | B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED); | |
1388 | ||
1389 | reason = dev->irq_reason; | |
1390 | for (i = 0; i < ARRAY_SIZE(dma_reason); i++) { | |
1391 | dma_reason[i] = dev->dma_reason[i]; | |
1392 | merged_dma_reason |= dma_reason[i]; | |
1393 | } | |
1394 | ||
1395 | if (unlikely(reason & B43_IRQ_MAC_TXERR)) | |
1396 | b43err(dev->wl, "MAC transmission error\n"); | |
1397 | ||
00e0b8cb | 1398 | if (unlikely(reason & B43_IRQ_PHY_TXERR)) { |
e4d6b795 | 1399 | b43err(dev->wl, "PHY transmission error\n"); |
00e0b8cb SB |
1400 | rmb(); |
1401 | if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { | |
1402 | atomic_set(&dev->phy.txerr_cnt, | |
1403 | B43_PHY_TX_BADNESS_LIMIT); | |
1404 | b43err(dev->wl, "Too many PHY TX errors, " | |
1405 | "restarting the controller\n"); | |
1406 | b43_controller_restart(dev, "PHY TX errors"); | |
1407 | } | |
1408 | } | |
e4d6b795 MB |
1409 | |
1410 | if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK | | |
1411 | B43_DMAIRQ_NONFATALMASK))) { | |
1412 | if (merged_dma_reason & B43_DMAIRQ_FATALMASK) { | |
1413 | b43err(dev->wl, "Fatal DMA error: " | |
1414 | "0x%08X, 0x%08X, 0x%08X, " | |
1415 | "0x%08X, 0x%08X, 0x%08X\n", | |
1416 | dma_reason[0], dma_reason[1], | |
1417 | dma_reason[2], dma_reason[3], | |
1418 | dma_reason[4], dma_reason[5]); | |
1419 | b43_controller_restart(dev, "DMA error"); | |
1420 | mmiowb(); | |
1421 | spin_unlock_irqrestore(&dev->wl->irq_lock, flags); | |
1422 | return; | |
1423 | } | |
1424 | if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) { | |
1425 | b43err(dev->wl, "DMA error: " | |
1426 | "0x%08X, 0x%08X, 0x%08X, " | |
1427 | "0x%08X, 0x%08X, 0x%08X\n", | |
1428 | dma_reason[0], dma_reason[1], | |
1429 | dma_reason[2], dma_reason[3], | |
1430 | dma_reason[4], dma_reason[5]); | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | if (unlikely(reason & B43_IRQ_UCODE_DEBUG)) | |
1435 | handle_irq_ucode_debug(dev); | |
1436 | if (reason & B43_IRQ_TBTT_INDI) | |
1437 | handle_irq_tbtt_indication(dev); | |
1438 | if (reason & B43_IRQ_ATIM_END) | |
1439 | handle_irq_atim_end(dev); | |
1440 | if (reason & B43_IRQ_BEACON) | |
1441 | handle_irq_beacon(dev); | |
1442 | if (reason & B43_IRQ_PMQ) | |
1443 | handle_irq_pmq(dev); | |
21954c36 MB |
1444 | if (reason & B43_IRQ_TXFIFO_FLUSH_OK) |
1445 | ;/* TODO */ | |
1446 | if (reason & B43_IRQ_NOISESAMPLE_OK) | |
e4d6b795 MB |
1447 | handle_irq_noise(dev); |
1448 | ||
1449 | /* Check the DMA reason registers for received data. */ | |
1450 | if (dma_reason[0] & B43_DMAIRQ_RX_DONE) { | |
1451 | if (b43_using_pio(dev)) | |
1452 | b43_pio_rx(dev->pio.queue0); | |
1453 | else | |
1454 | b43_dma_rx(dev->dma.rx_ring0); | |
e4d6b795 MB |
1455 | } |
1456 | B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE); | |
1457 | B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE); | |
1458 | if (dma_reason[3] & B43_DMAIRQ_RX_DONE) { | |
1459 | if (b43_using_pio(dev)) | |
1460 | b43_pio_rx(dev->pio.queue3); | |
1461 | else | |
1462 | b43_dma_rx(dev->dma.rx_ring3); | |
e4d6b795 MB |
1463 | } |
1464 | B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE); | |
1465 | B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE); | |
1466 | ||
21954c36 | 1467 | if (reason & B43_IRQ_TX_OK) |
e4d6b795 | 1468 | handle_irq_transmit_status(dev); |
e4d6b795 | 1469 | |
e4d6b795 MB |
1470 | b43_interrupt_enable(dev, dev->irq_savedstate); |
1471 | mmiowb(); | |
1472 | spin_unlock_irqrestore(&dev->wl->irq_lock, flags); | |
1473 | } | |
1474 | ||
1475 | static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx) | |
1476 | { | |
1477 | u16 rxctl; | |
1478 | ||
1479 | rxctl = b43_read16(dev, base + B43_PIO_RXCTL); | |
1480 | if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE) | |
1481 | dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE; | |
1482 | else | |
1483 | dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE; | |
1484 | } | |
1485 | ||
1486 | static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason) | |
1487 | { | |
1488 | if (b43_using_pio(dev) && | |
1489 | (dev->dev->id.revision < 3) && | |
1490 | (!(reason & B43_IRQ_PIO_WORKAROUND))) { | |
1491 | /* Apply a PIO specific workaround to the dma_reasons */ | |
1492 | pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0); | |
1493 | pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1); | |
1494 | pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2); | |
1495 | pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3); | |
1496 | } | |
1497 | ||
1498 | b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason); | |
1499 | ||
1500 | b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]); | |
1501 | b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]); | |
1502 | b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]); | |
1503 | b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]); | |
1504 | b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]); | |
1505 | b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]); | |
1506 | } | |
1507 | ||
1508 | /* Interrupt handler top-half */ | |
1509 | static irqreturn_t b43_interrupt_handler(int irq, void *dev_id) | |
1510 | { | |
1511 | irqreturn_t ret = IRQ_NONE; | |
1512 | struct b43_wldev *dev = dev_id; | |
1513 | u32 reason; | |
1514 | ||
1515 | if (!dev) | |
1516 | return IRQ_NONE; | |
1517 | ||
1518 | spin_lock(&dev->wl->irq_lock); | |
1519 | ||
1520 | if (b43_status(dev) < B43_STAT_STARTED) | |
1521 | goto out; | |
1522 | reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); | |
1523 | if (reason == 0xffffffff) /* shared IRQ */ | |
1524 | goto out; | |
1525 | ret = IRQ_HANDLED; | |
1526 | reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); | |
1527 | if (!reason) | |
1528 | goto out; | |
1529 | ||
1530 | dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON) | |
1531 | & 0x0001DC00; | |
1532 | dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON) | |
1533 | & 0x0000DC00; | |
1534 | dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON) | |
1535 | & 0x0000DC00; | |
1536 | dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON) | |
1537 | & 0x0001DC00; | |
1538 | dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON) | |
1539 | & 0x0000DC00; | |
1540 | dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON) | |
1541 | & 0x0000DC00; | |
1542 | ||
1543 | b43_interrupt_ack(dev, reason); | |
1544 | /* disable all IRQs. They are enabled again in the bottom half. */ | |
1545 | dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL); | |
1546 | /* save the reason code and call our bottom half. */ | |
1547 | dev->irq_reason = reason; | |
1548 | tasklet_schedule(&dev->isr_tasklet); | |
1549 | out: | |
1550 | mmiowb(); | |
1551 | spin_unlock(&dev->wl->irq_lock); | |
1552 | ||
1553 | return ret; | |
1554 | } | |
1555 | ||
1556 | static void b43_release_firmware(struct b43_wldev *dev) | |
1557 | { | |
1558 | release_firmware(dev->fw.ucode); | |
1559 | dev->fw.ucode = NULL; | |
1560 | release_firmware(dev->fw.pcm); | |
1561 | dev->fw.pcm = NULL; | |
1562 | release_firmware(dev->fw.initvals); | |
1563 | dev->fw.initvals = NULL; | |
1564 | release_firmware(dev->fw.initvals_band); | |
1565 | dev->fw.initvals_band = NULL; | |
1566 | } | |
1567 | ||
1568 | static void b43_print_fw_helptext(struct b43_wl *wl) | |
1569 | { | |
1570 | b43err(wl, "You must go to " | |
354807e0 | 1571 | "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware " |
e4d6b795 MB |
1572 | "and download the correct firmware (version 4).\n"); |
1573 | } | |
1574 | ||
1575 | static int do_request_fw(struct b43_wldev *dev, | |
1576 | const char *name, | |
1577 | const struct firmware **fw) | |
1578 | { | |
1a09404a | 1579 | char path[sizeof(modparam_fwpostfix) + 32]; |
e4d6b795 MB |
1580 | struct b43_fw_header *hdr; |
1581 | u32 size; | |
1582 | int err; | |
1583 | ||
1584 | if (!name) | |
1585 | return 0; | |
1586 | ||
1587 | snprintf(path, ARRAY_SIZE(path), | |
1588 | "b43%s/%s.fw", | |
1589 | modparam_fwpostfix, name); | |
1590 | err = request_firmware(fw, path, dev->dev->dev); | |
1591 | if (err) { | |
1592 | b43err(dev->wl, "Firmware file \"%s\" not found " | |
1593 | "or load failed.\n", path); | |
1594 | return err; | |
1595 | } | |
1596 | if ((*fw)->size < sizeof(struct b43_fw_header)) | |
1597 | goto err_format; | |
1598 | hdr = (struct b43_fw_header *)((*fw)->data); | |
1599 | switch (hdr->type) { | |
1600 | case B43_FW_TYPE_UCODE: | |
1601 | case B43_FW_TYPE_PCM: | |
1602 | size = be32_to_cpu(hdr->size); | |
1603 | if (size != (*fw)->size - sizeof(struct b43_fw_header)) | |
1604 | goto err_format; | |
1605 | /* fallthrough */ | |
1606 | case B43_FW_TYPE_IV: | |
1607 | if (hdr->ver != 1) | |
1608 | goto err_format; | |
1609 | break; | |
1610 | default: | |
1611 | goto err_format; | |
1612 | } | |
1613 | ||
1614 | return err; | |
1615 | ||
1616 | err_format: | |
1617 | b43err(dev->wl, "Firmware file \"%s\" format error.\n", path); | |
1618 | return -EPROTO; | |
1619 | } | |
1620 | ||
1621 | static int b43_request_firmware(struct b43_wldev *dev) | |
1622 | { | |
1623 | struct b43_firmware *fw = &dev->fw; | |
1624 | const u8 rev = dev->dev->id.revision; | |
1625 | const char *filename; | |
1626 | u32 tmshigh; | |
1627 | int err; | |
1628 | ||
1629 | tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); | |
1630 | if (!fw->ucode) { | |
1631 | if ((rev >= 5) && (rev <= 10)) | |
1632 | filename = "ucode5"; | |
1633 | else if ((rev >= 11) && (rev <= 12)) | |
1634 | filename = "ucode11"; | |
1635 | else if (rev >= 13) | |
1636 | filename = "ucode13"; | |
1637 | else | |
1638 | goto err_no_ucode; | |
1639 | err = do_request_fw(dev, filename, &fw->ucode); | |
1640 | if (err) | |
1641 | goto err_load; | |
1642 | } | |
1643 | if (!fw->pcm) { | |
1644 | if ((rev >= 5) && (rev <= 10)) | |
1645 | filename = "pcm5"; | |
1646 | else if (rev >= 11) | |
1647 | filename = NULL; | |
1648 | else | |
1649 | goto err_no_pcm; | |
1650 | err = do_request_fw(dev, filename, &fw->pcm); | |
1651 | if (err) | |
1652 | goto err_load; | |
1653 | } | |
1654 | if (!fw->initvals) { | |
1655 | switch (dev->phy.type) { | |
1656 | case B43_PHYTYPE_A: | |
1657 | if ((rev >= 5) && (rev <= 10)) { | |
1658 | if (tmshigh & B43_TMSHIGH_GPHY) | |
1659 | filename = "a0g1initvals5"; | |
1660 | else | |
1661 | filename = "a0g0initvals5"; | |
1662 | } else | |
1663 | goto err_no_initvals; | |
1664 | break; | |
1665 | case B43_PHYTYPE_G: | |
1666 | if ((rev >= 5) && (rev <= 10)) | |
1667 | filename = "b0g0initvals5"; | |
1668 | else if (rev >= 13) | |
1669 | filename = "lp0initvals13"; | |
1670 | else | |
1671 | goto err_no_initvals; | |
1672 | break; | |
1673 | default: | |
1674 | goto err_no_initvals; | |
1675 | } | |
1676 | err = do_request_fw(dev, filename, &fw->initvals); | |
1677 | if (err) | |
1678 | goto err_load; | |
1679 | } | |
1680 | if (!fw->initvals_band) { | |
1681 | switch (dev->phy.type) { | |
1682 | case B43_PHYTYPE_A: | |
1683 | if ((rev >= 5) && (rev <= 10)) { | |
1684 | if (tmshigh & B43_TMSHIGH_GPHY) | |
1685 | filename = "a0g1bsinitvals5"; | |
1686 | else | |
1687 | filename = "a0g0bsinitvals5"; | |
1688 | } else if (rev >= 11) | |
1689 | filename = NULL; | |
1690 | else | |
1691 | goto err_no_initvals; | |
1692 | break; | |
1693 | case B43_PHYTYPE_G: | |
1694 | if ((rev >= 5) && (rev <= 10)) | |
1695 | filename = "b0g0bsinitvals5"; | |
1696 | else if (rev >= 11) | |
1697 | filename = NULL; | |
1698 | else | |
1699 | goto err_no_initvals; | |
1700 | break; | |
1701 | default: | |
1702 | goto err_no_initvals; | |
1703 | } | |
1704 | err = do_request_fw(dev, filename, &fw->initvals_band); | |
1705 | if (err) | |
1706 | goto err_load; | |
1707 | } | |
1708 | ||
1709 | return 0; | |
1710 | ||
1711 | err_load: | |
1712 | b43_print_fw_helptext(dev->wl); | |
1713 | goto error; | |
1714 | ||
1715 | err_no_ucode: | |
1716 | err = -ENODEV; | |
1717 | b43err(dev->wl, "No microcode available for core rev %u\n", rev); | |
1718 | goto error; | |
1719 | ||
1720 | err_no_pcm: | |
1721 | err = -ENODEV; | |
1722 | b43err(dev->wl, "No PCM available for core rev %u\n", rev); | |
1723 | goto error; | |
1724 | ||
1725 | err_no_initvals: | |
1726 | err = -ENODEV; | |
1727 | b43err(dev->wl, "No Initial Values firmware file for PHY %u, " | |
1728 | "core rev %u\n", dev->phy.type, rev); | |
1729 | goto error; | |
1730 | ||
1731 | error: | |
1732 | b43_release_firmware(dev); | |
1733 | return err; | |
1734 | } | |
1735 | ||
1736 | static int b43_upload_microcode(struct b43_wldev *dev) | |
1737 | { | |
1738 | const size_t hdr_len = sizeof(struct b43_fw_header); | |
1739 | const __be32 *data; | |
1740 | unsigned int i, len; | |
1741 | u16 fwrev, fwpatch, fwdate, fwtime; | |
1742 | u32 tmp; | |
1743 | int err = 0; | |
1744 | ||
1745 | /* Upload Microcode. */ | |
1746 | data = (__be32 *) (dev->fw.ucode->data + hdr_len); | |
1747 | len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32); | |
1748 | b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000); | |
1749 | for (i = 0; i < len; i++) { | |
1750 | b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i])); | |
1751 | udelay(10); | |
1752 | } | |
1753 | ||
1754 | if (dev->fw.pcm) { | |
1755 | /* Upload PCM data. */ | |
1756 | data = (__be32 *) (dev->fw.pcm->data + hdr_len); | |
1757 | len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32); | |
1758 | b43_shm_control_word(dev, B43_SHM_HW, 0x01EA); | |
1759 | b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000); | |
1760 | /* No need for autoinc bit in SHM_HW */ | |
1761 | b43_shm_control_word(dev, B43_SHM_HW, 0x01EB); | |
1762 | for (i = 0; i < len; i++) { | |
1763 | b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i])); | |
1764 | udelay(10); | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL); | |
1769 | b43_write32(dev, B43_MMIO_MACCTL, | |
1770 | B43_MACCTL_PSM_RUN | | |
1771 | B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA); | |
1772 | ||
1773 | /* Wait for the microcode to load and respond */ | |
1774 | i = 0; | |
1775 | while (1) { | |
1776 | tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); | |
1777 | if (tmp == B43_IRQ_MAC_SUSPENDED) | |
1778 | break; | |
1779 | i++; | |
1780 | if (i >= 50) { | |
1781 | b43err(dev->wl, "Microcode not responding\n"); | |
1782 | b43_print_fw_helptext(dev->wl); | |
1783 | err = -ENODEV; | |
1784 | goto out; | |
1785 | } | |
1786 | udelay(10); | |
1787 | } | |
1788 | b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */ | |
1789 | ||
1790 | /* Get and check the revisions. */ | |
1791 | fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV); | |
1792 | fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH); | |
1793 | fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE); | |
1794 | fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME); | |
1795 | ||
1796 | if (fwrev <= 0x128) { | |
1797 | b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from " | |
1798 | "binary drivers older than version 4.x is unsupported. " | |
1799 | "You must upgrade your firmware files.\n"); | |
1800 | b43_print_fw_helptext(dev->wl); | |
1801 | b43_write32(dev, B43_MMIO_MACCTL, 0); | |
1802 | err = -EOPNOTSUPP; | |
1803 | goto out; | |
1804 | } | |
1805 | b43dbg(dev->wl, "Loading firmware version %u.%u " | |
1806 | "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", | |
1807 | fwrev, fwpatch, | |
1808 | (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF, | |
1809 | (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F); | |
1810 | ||
1811 | dev->fw.rev = fwrev; | |
1812 | dev->fw.patch = fwpatch; | |
1813 | ||
1814 | out: | |
1815 | return err; | |
1816 | } | |
1817 | ||
1818 | static int b43_write_initvals(struct b43_wldev *dev, | |
1819 | const struct b43_iv *ivals, | |
1820 | size_t count, | |
1821 | size_t array_size) | |
1822 | { | |
1823 | const struct b43_iv *iv; | |
1824 | u16 offset; | |
1825 | size_t i; | |
1826 | bool bit32; | |
1827 | ||
1828 | BUILD_BUG_ON(sizeof(struct b43_iv) != 6); | |
1829 | iv = ivals; | |
1830 | for (i = 0; i < count; i++) { | |
1831 | if (array_size < sizeof(iv->offset_size)) | |
1832 | goto err_format; | |
1833 | array_size -= sizeof(iv->offset_size); | |
1834 | offset = be16_to_cpu(iv->offset_size); | |
1835 | bit32 = !!(offset & B43_IV_32BIT); | |
1836 | offset &= B43_IV_OFFSET_MASK; | |
1837 | if (offset >= 0x1000) | |
1838 | goto err_format; | |
1839 | if (bit32) { | |
1840 | u32 value; | |
1841 | ||
1842 | if (array_size < sizeof(iv->data.d32)) | |
1843 | goto err_format; | |
1844 | array_size -= sizeof(iv->data.d32); | |
1845 | ||
1846 | value = be32_to_cpu(get_unaligned(&iv->data.d32)); | |
1847 | b43_write32(dev, offset, value); | |
1848 | ||
1849 | iv = (const struct b43_iv *)((const uint8_t *)iv + | |
1850 | sizeof(__be16) + | |
1851 | sizeof(__be32)); | |
1852 | } else { | |
1853 | u16 value; | |
1854 | ||
1855 | if (array_size < sizeof(iv->data.d16)) | |
1856 | goto err_format; | |
1857 | array_size -= sizeof(iv->data.d16); | |
1858 | ||
1859 | value = be16_to_cpu(iv->data.d16); | |
1860 | b43_write16(dev, offset, value); | |
1861 | ||
1862 | iv = (const struct b43_iv *)((const uint8_t *)iv + | |
1863 | sizeof(__be16) + | |
1864 | sizeof(__be16)); | |
1865 | } | |
1866 | } | |
1867 | if (array_size) | |
1868 | goto err_format; | |
1869 | ||
1870 | return 0; | |
1871 | ||
1872 | err_format: | |
1873 | b43err(dev->wl, "Initial Values Firmware file-format error.\n"); | |
1874 | b43_print_fw_helptext(dev->wl); | |
1875 | ||
1876 | return -EPROTO; | |
1877 | } | |
1878 | ||
1879 | static int b43_upload_initvals(struct b43_wldev *dev) | |
1880 | { | |
1881 | const size_t hdr_len = sizeof(struct b43_fw_header); | |
1882 | const struct b43_fw_header *hdr; | |
1883 | struct b43_firmware *fw = &dev->fw; | |
1884 | const struct b43_iv *ivals; | |
1885 | size_t count; | |
1886 | int err; | |
1887 | ||
1888 | hdr = (const struct b43_fw_header *)(fw->initvals->data); | |
1889 | ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len); | |
1890 | count = be32_to_cpu(hdr->size); | |
1891 | err = b43_write_initvals(dev, ivals, count, | |
1892 | fw->initvals->size - hdr_len); | |
1893 | if (err) | |
1894 | goto out; | |
1895 | if (fw->initvals_band) { | |
1896 | hdr = (const struct b43_fw_header *)(fw->initvals_band->data); | |
1897 | ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len); | |
1898 | count = be32_to_cpu(hdr->size); | |
1899 | err = b43_write_initvals(dev, ivals, count, | |
1900 | fw->initvals_band->size - hdr_len); | |
1901 | if (err) | |
1902 | goto out; | |
1903 | } | |
1904 | out: | |
1905 | ||
1906 | return err; | |
1907 | } | |
1908 | ||
1909 | /* Initialize the GPIOs | |
1910 | * http://bcm-specs.sipsolutions.net/GPIO | |
1911 | */ | |
1912 | static int b43_gpio_init(struct b43_wldev *dev) | |
1913 | { | |
1914 | struct ssb_bus *bus = dev->dev->bus; | |
1915 | struct ssb_device *gpiodev, *pcidev = NULL; | |
1916 | u32 mask, set; | |
1917 | ||
1918 | b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) | |
1919 | & ~B43_MACCTL_GPOUTSMSK); | |
1920 | ||
e4d6b795 MB |
1921 | b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) |
1922 | | 0x000F); | |
1923 | ||
1924 | mask = 0x0000001F; | |
1925 | set = 0x0000000F; | |
1926 | if (dev->dev->bus->chip_id == 0x4301) { | |
1927 | mask |= 0x0060; | |
1928 | set |= 0x0060; | |
1929 | } | |
1930 | if (0 /* FIXME: conditional unknown */ ) { | |
1931 | b43_write16(dev, B43_MMIO_GPIO_MASK, | |
1932 | b43_read16(dev, B43_MMIO_GPIO_MASK) | |
1933 | | 0x0100); | |
1934 | mask |= 0x0180; | |
1935 | set |= 0x0180; | |
1936 | } | |
95de2841 | 1937 | if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) { |
e4d6b795 MB |
1938 | b43_write16(dev, B43_MMIO_GPIO_MASK, |
1939 | b43_read16(dev, B43_MMIO_GPIO_MASK) | |
1940 | | 0x0200); | |
1941 | mask |= 0x0200; | |
1942 | set |= 0x0200; | |
1943 | } | |
1944 | if (dev->dev->id.revision >= 2) | |
1945 | mask |= 0x0010; /* FIXME: This is redundant. */ | |
1946 | ||
1947 | #ifdef CONFIG_SSB_DRIVER_PCICORE | |
1948 | pcidev = bus->pcicore.dev; | |
1949 | #endif | |
1950 | gpiodev = bus->chipco.dev ? : pcidev; | |
1951 | if (!gpiodev) | |
1952 | return 0; | |
1953 | ssb_write32(gpiodev, B43_GPIO_CONTROL, | |
1954 | (ssb_read32(gpiodev, B43_GPIO_CONTROL) | |
1955 | & mask) | set); | |
1956 | ||
1957 | return 0; | |
1958 | } | |
1959 | ||
1960 | /* Turn off all GPIO stuff. Call this on module unload, for example. */ | |
1961 | static void b43_gpio_cleanup(struct b43_wldev *dev) | |
1962 | { | |
1963 | struct ssb_bus *bus = dev->dev->bus; | |
1964 | struct ssb_device *gpiodev, *pcidev = NULL; | |
1965 | ||
1966 | #ifdef CONFIG_SSB_DRIVER_PCICORE | |
1967 | pcidev = bus->pcicore.dev; | |
1968 | #endif | |
1969 | gpiodev = bus->chipco.dev ? : pcidev; | |
1970 | if (!gpiodev) | |
1971 | return; | |
1972 | ssb_write32(gpiodev, B43_GPIO_CONTROL, 0); | |
1973 | } | |
1974 | ||
1975 | /* http://bcm-specs.sipsolutions.net/EnableMac */ | |
1976 | void b43_mac_enable(struct b43_wldev *dev) | |
1977 | { | |
1978 | dev->mac_suspended--; | |
1979 | B43_WARN_ON(dev->mac_suspended < 0); | |
05b64b36 | 1980 | B43_WARN_ON(irqs_disabled()); |
e4d6b795 MB |
1981 | if (dev->mac_suspended == 0) { |
1982 | b43_write32(dev, B43_MMIO_MACCTL, | |
1983 | b43_read32(dev, B43_MMIO_MACCTL) | |
1984 | | B43_MACCTL_ENABLED); | |
1985 | b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, | |
1986 | B43_IRQ_MAC_SUSPENDED); | |
1987 | /* Commit writes */ | |
1988 | b43_read32(dev, B43_MMIO_MACCTL); | |
1989 | b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); | |
1990 | b43_power_saving_ctl_bits(dev, 0); | |
05b64b36 MB |
1991 | |
1992 | /* Re-enable IRQs. */ | |
1993 | spin_lock_irq(&dev->wl->irq_lock); | |
1994 | b43_interrupt_enable(dev, dev->irq_savedstate); | |
1995 | spin_unlock_irq(&dev->wl->irq_lock); | |
e4d6b795 MB |
1996 | } |
1997 | } | |
1998 | ||
1999 | /* http://bcm-specs.sipsolutions.net/SuspendMAC */ | |
2000 | void b43_mac_suspend(struct b43_wldev *dev) | |
2001 | { | |
2002 | int i; | |
2003 | u32 tmp; | |
2004 | ||
05b64b36 MB |
2005 | might_sleep(); |
2006 | B43_WARN_ON(irqs_disabled()); | |
e4d6b795 | 2007 | B43_WARN_ON(dev->mac_suspended < 0); |
05b64b36 | 2008 | |
e4d6b795 | 2009 | if (dev->mac_suspended == 0) { |
05b64b36 MB |
2010 | /* Mask IRQs before suspending MAC. Otherwise |
2011 | * the MAC stays busy and won't suspend. */ | |
2012 | spin_lock_irq(&dev->wl->irq_lock); | |
2013 | tmp = b43_interrupt_disable(dev, B43_IRQ_ALL); | |
2014 | spin_unlock_irq(&dev->wl->irq_lock); | |
2015 | b43_synchronize_irq(dev); | |
2016 | dev->irq_savedstate = tmp; | |
2017 | ||
e4d6b795 MB |
2018 | b43_power_saving_ctl_bits(dev, B43_PS_AWAKE); |
2019 | b43_write32(dev, B43_MMIO_MACCTL, | |
2020 | b43_read32(dev, B43_MMIO_MACCTL) | |
2021 | & ~B43_MACCTL_ENABLED); | |
2022 | /* force pci to flush the write */ | |
2023 | b43_read32(dev, B43_MMIO_MACCTL); | |
05b64b36 | 2024 | for (i = 40; i; i--) { |
e4d6b795 MB |
2025 | tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); |
2026 | if (tmp & B43_IRQ_MAC_SUSPENDED) | |
2027 | goto out; | |
05b64b36 | 2028 | msleep(1); |
e4d6b795 MB |
2029 | } |
2030 | b43err(dev->wl, "MAC suspend failed\n"); | |
2031 | } | |
05b64b36 | 2032 | out: |
e4d6b795 MB |
2033 | dev->mac_suspended++; |
2034 | } | |
2035 | ||
2036 | static void b43_adjust_opmode(struct b43_wldev *dev) | |
2037 | { | |
2038 | struct b43_wl *wl = dev->wl; | |
2039 | u32 ctl; | |
2040 | u16 cfp_pretbtt; | |
2041 | ||
2042 | ctl = b43_read32(dev, B43_MMIO_MACCTL); | |
2043 | /* Reset status to STA infrastructure mode. */ | |
2044 | ctl &= ~B43_MACCTL_AP; | |
2045 | ctl &= ~B43_MACCTL_KEEP_CTL; | |
2046 | ctl &= ~B43_MACCTL_KEEP_BADPLCP; | |
2047 | ctl &= ~B43_MACCTL_KEEP_BAD; | |
2048 | ctl &= ~B43_MACCTL_PROMISC; | |
4150c572 | 2049 | ctl &= ~B43_MACCTL_BEACPROMISC; |
e4d6b795 MB |
2050 | ctl |= B43_MACCTL_INFRA; |
2051 | ||
4150c572 JB |
2052 | if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) |
2053 | ctl |= B43_MACCTL_AP; | |
2054 | else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS)) | |
2055 | ctl &= ~B43_MACCTL_INFRA; | |
2056 | ||
2057 | if (wl->filter_flags & FIF_CONTROL) | |
e4d6b795 | 2058 | ctl |= B43_MACCTL_KEEP_CTL; |
4150c572 JB |
2059 | if (wl->filter_flags & FIF_FCSFAIL) |
2060 | ctl |= B43_MACCTL_KEEP_BAD; | |
2061 | if (wl->filter_flags & FIF_PLCPFAIL) | |
2062 | ctl |= B43_MACCTL_KEEP_BADPLCP; | |
2063 | if (wl->filter_flags & FIF_PROMISC_IN_BSS) | |
e4d6b795 | 2064 | ctl |= B43_MACCTL_PROMISC; |
4150c572 JB |
2065 | if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) |
2066 | ctl |= B43_MACCTL_BEACPROMISC; | |
2067 | ||
e4d6b795 MB |
2068 | /* Workaround: On old hardware the HW-MAC-address-filter |
2069 | * doesn't work properly, so always run promisc in filter | |
2070 | * it in software. */ | |
2071 | if (dev->dev->id.revision <= 4) | |
2072 | ctl |= B43_MACCTL_PROMISC; | |
2073 | ||
2074 | b43_write32(dev, B43_MMIO_MACCTL, ctl); | |
2075 | ||
2076 | cfp_pretbtt = 2; | |
2077 | if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) { | |
2078 | if (dev->dev->bus->chip_id == 0x4306 && | |
2079 | dev->dev->bus->chip_rev == 3) | |
2080 | cfp_pretbtt = 100; | |
2081 | else | |
2082 | cfp_pretbtt = 50; | |
2083 | } | |
2084 | b43_write16(dev, 0x612, cfp_pretbtt); | |
2085 | } | |
2086 | ||
2087 | static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm) | |
2088 | { | |
2089 | u16 offset; | |
2090 | ||
2091 | if (is_ofdm) { | |
2092 | offset = 0x480; | |
2093 | offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; | |
2094 | } else { | |
2095 | offset = 0x4C0; | |
2096 | offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2; | |
2097 | } | |
2098 | b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20, | |
2099 | b43_shm_read16(dev, B43_SHM_SHARED, offset)); | |
2100 | } | |
2101 | ||
2102 | static void b43_rate_memory_init(struct b43_wldev *dev) | |
2103 | { | |
2104 | switch (dev->phy.type) { | |
2105 | case B43_PHYTYPE_A: | |
2106 | case B43_PHYTYPE_G: | |
2107 | b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1); | |
2108 | b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1); | |
2109 | b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1); | |
2110 | b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1); | |
2111 | b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1); | |
2112 | b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1); | |
2113 | b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1); | |
2114 | if (dev->phy.type == B43_PHYTYPE_A) | |
2115 | break; | |
2116 | /* fallthrough */ | |
2117 | case B43_PHYTYPE_B: | |
2118 | b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0); | |
2119 | b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0); | |
2120 | b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0); | |
2121 | b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0); | |
2122 | break; | |
2123 | default: | |
2124 | B43_WARN_ON(1); | |
2125 | } | |
2126 | } | |
2127 | ||
2128 | /* Set the TX-Antenna for management frames sent by firmware. */ | |
2129 | static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna) | |
2130 | { | |
2131 | u16 ant = 0; | |
2132 | u16 tmp; | |
2133 | ||
2134 | switch (antenna) { | |
2135 | case B43_ANTENNA0: | |
2136 | ant |= B43_TX4_PHY_ANT0; | |
2137 | break; | |
2138 | case B43_ANTENNA1: | |
2139 | ant |= B43_TX4_PHY_ANT1; | |
2140 | break; | |
2141 | case B43_ANTENNA_AUTO: | |
2142 | ant |= B43_TX4_PHY_ANTLAST; | |
2143 | break; | |
2144 | default: | |
2145 | B43_WARN_ON(1); | |
2146 | } | |
2147 | ||
2148 | /* FIXME We also need to set the other flags of the PHY control field somewhere. */ | |
2149 | ||
2150 | /* For Beacons */ | |
2151 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL); | |
2152 | tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; | |
2153 | b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp); | |
2154 | /* For ACK/CTS */ | |
2155 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL); | |
2156 | tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; | |
2157 | b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp); | |
2158 | /* For Probe Resposes */ | |
2159 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL); | |
2160 | tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; | |
2161 | b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp); | |
2162 | } | |
2163 | ||
2164 | /* This is the opposite of b43_chip_init() */ | |
2165 | static void b43_chip_exit(struct b43_wldev *dev) | |
2166 | { | |
8e9f7529 | 2167 | b43_radio_turn_off(dev, 1); |
e4d6b795 MB |
2168 | b43_gpio_cleanup(dev); |
2169 | /* firmware is released later */ | |
2170 | } | |
2171 | ||
2172 | /* Initialize the chip | |
2173 | * http://bcm-specs.sipsolutions.net/ChipInit | |
2174 | */ | |
2175 | static int b43_chip_init(struct b43_wldev *dev) | |
2176 | { | |
2177 | struct b43_phy *phy = &dev->phy; | |
2178 | int err, tmp; | |
2179 | u32 value32; | |
2180 | u16 value16; | |
2181 | ||
2182 | b43_write32(dev, B43_MMIO_MACCTL, | |
2183 | B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED); | |
2184 | ||
2185 | err = b43_request_firmware(dev); | |
2186 | if (err) | |
2187 | goto out; | |
2188 | err = b43_upload_microcode(dev); | |
2189 | if (err) | |
2190 | goto out; /* firmware is released later */ | |
2191 | ||
2192 | err = b43_gpio_init(dev); | |
2193 | if (err) | |
2194 | goto out; /* firmware is released later */ | |
21954c36 | 2195 | |
e4d6b795 MB |
2196 | err = b43_upload_initvals(dev); |
2197 | if (err) | |
1a8d1227 | 2198 | goto err_gpio_clean; |
e4d6b795 | 2199 | b43_radio_turn_on(dev); |
e4d6b795 MB |
2200 | |
2201 | b43_write16(dev, 0x03E6, 0x0000); | |
2202 | err = b43_phy_init(dev); | |
2203 | if (err) | |
2204 | goto err_radio_off; | |
2205 | ||
2206 | /* Select initial Interference Mitigation. */ | |
2207 | tmp = phy->interfmode; | |
2208 | phy->interfmode = B43_INTERFMODE_NONE; | |
2209 | b43_radio_set_interference_mitigation(dev, tmp); | |
2210 | ||
2211 | b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT); | |
2212 | b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT); | |
2213 | ||
2214 | if (phy->type == B43_PHYTYPE_B) { | |
2215 | value16 = b43_read16(dev, 0x005E); | |
2216 | value16 |= 0x0004; | |
2217 | b43_write16(dev, 0x005E, value16); | |
2218 | } | |
2219 | b43_write32(dev, 0x0100, 0x01000000); | |
2220 | if (dev->dev->id.revision < 5) | |
2221 | b43_write32(dev, 0x010C, 0x01000000); | |
2222 | ||
2223 | b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) | |
2224 | & ~B43_MACCTL_INFRA); | |
2225 | b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) | |
2226 | | B43_MACCTL_INFRA); | |
e4d6b795 MB |
2227 | |
2228 | if (b43_using_pio(dev)) { | |
2229 | b43_write32(dev, 0x0210, 0x00000100); | |
2230 | b43_write32(dev, 0x0230, 0x00000100); | |
2231 | b43_write32(dev, 0x0250, 0x00000100); | |
2232 | b43_write32(dev, 0x0270, 0x00000100); | |
2233 | b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000); | |
2234 | } | |
2235 | ||
2236 | /* Probe Response Timeout value */ | |
2237 | /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ | |
2238 | b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000); | |
2239 | ||
2240 | /* Initially set the wireless operation mode. */ | |
2241 | b43_adjust_opmode(dev); | |
2242 | ||
2243 | if (dev->dev->id.revision < 3) { | |
2244 | b43_write16(dev, 0x060E, 0x0000); | |
2245 | b43_write16(dev, 0x0610, 0x8000); | |
2246 | b43_write16(dev, 0x0604, 0x0000); | |
2247 | b43_write16(dev, 0x0606, 0x0200); | |
2248 | } else { | |
2249 | b43_write32(dev, 0x0188, 0x80000000); | |
2250 | b43_write32(dev, 0x018C, 0x02000000); | |
2251 | } | |
2252 | b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000); | |
2253 | b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00); | |
2254 | b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00); | |
2255 | b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00); | |
2256 | b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00); | |
2257 | b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00); | |
2258 | b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00); | |
2259 | ||
2260 | value32 = ssb_read32(dev->dev, SSB_TMSLOW); | |
2261 | value32 |= 0x00100000; | |
2262 | ssb_write32(dev->dev, SSB_TMSLOW, value32); | |
2263 | ||
2264 | b43_write16(dev, B43_MMIO_POWERUP_DELAY, | |
2265 | dev->dev->bus->chipco.fast_pwrup_delay); | |
2266 | ||
61bca6eb SB |
2267 | /* OFDM address caching. */ |
2268 | phy->ofdm_valid = 0; | |
2269 | ||
00e0b8cb SB |
2270 | /* PHY TX errors counter. */ |
2271 | atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT); | |
2272 | ||
e4d6b795 MB |
2273 | err = 0; |
2274 | b43dbg(dev->wl, "Chip initialized\n"); | |
21954c36 | 2275 | out: |
e4d6b795 MB |
2276 | return err; |
2277 | ||
21954c36 | 2278 | err_radio_off: |
8e9f7529 | 2279 | b43_radio_turn_off(dev, 1); |
1a8d1227 | 2280 | err_gpio_clean: |
e4d6b795 | 2281 | b43_gpio_cleanup(dev); |
21954c36 | 2282 | return err; |
e4d6b795 MB |
2283 | } |
2284 | ||
2285 | static void b43_periodic_every120sec(struct b43_wldev *dev) | |
2286 | { | |
2287 | struct b43_phy *phy = &dev->phy; | |
2288 | ||
2289 | if (phy->type != B43_PHYTYPE_G || phy->rev < 2) | |
2290 | return; | |
2291 | ||
2292 | b43_mac_suspend(dev); | |
2293 | b43_lo_g_measure(dev); | |
2294 | b43_mac_enable(dev); | |
2295 | if (b43_has_hardware_pctl(phy)) | |
2296 | b43_lo_g_ctl_mark_all_unused(dev); | |
2297 | } | |
2298 | ||
2299 | static void b43_periodic_every60sec(struct b43_wldev *dev) | |
2300 | { | |
2301 | struct b43_phy *phy = &dev->phy; | |
2302 | ||
2303 | if (!b43_has_hardware_pctl(phy)) | |
2304 | b43_lo_g_ctl_mark_all_unused(dev); | |
95de2841 | 2305 | if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) { |
e4d6b795 MB |
2306 | b43_mac_suspend(dev); |
2307 | b43_calc_nrssi_slope(dev); | |
2308 | if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) { | |
2309 | u8 old_chan = phy->channel; | |
2310 | ||
2311 | /* VCO Calibration */ | |
2312 | if (old_chan >= 8) | |
2313 | b43_radio_selectchannel(dev, 1, 0); | |
2314 | else | |
2315 | b43_radio_selectchannel(dev, 13, 0); | |
2316 | b43_radio_selectchannel(dev, old_chan, 0); | |
2317 | } | |
2318 | b43_mac_enable(dev); | |
2319 | } | |
2320 | } | |
2321 | ||
2322 | static void b43_periodic_every30sec(struct b43_wldev *dev) | |
2323 | { | |
2324 | /* Update device statistics. */ | |
2325 | b43_calculate_link_quality(dev); | |
2326 | } | |
2327 | ||
2328 | static void b43_periodic_every15sec(struct b43_wldev *dev) | |
2329 | { | |
2330 | struct b43_phy *phy = &dev->phy; | |
2331 | ||
2332 | if (phy->type == B43_PHYTYPE_G) { | |
2333 | //TODO: update_aci_moving_average | |
2334 | if (phy->aci_enable && phy->aci_wlan_automatic) { | |
2335 | b43_mac_suspend(dev); | |
2336 | if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) { | |
2337 | if (0 /*TODO: bunch of conditions */ ) { | |
2338 | b43_radio_set_interference_mitigation | |
2339 | (dev, B43_INTERFMODE_MANUALWLAN); | |
2340 | } | |
2341 | } else if (1 /*TODO*/) { | |
2342 | /* | |
2343 | if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) { | |
2344 | b43_radio_set_interference_mitigation(dev, | |
2345 | B43_INTERFMODE_NONE); | |
2346 | } | |
2347 | */ | |
2348 | } | |
2349 | b43_mac_enable(dev); | |
2350 | } else if (phy->interfmode == B43_INTERFMODE_NONWLAN && | |
2351 | phy->rev == 1) { | |
2352 | //TODO: implement rev1 workaround | |
2353 | } | |
2354 | } | |
2355 | b43_phy_xmitpower(dev); //FIXME: unless scanning? | |
2356 | //TODO for APHY (temperature?) | |
00e0b8cb SB |
2357 | |
2358 | atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT); | |
2359 | wmb(); | |
e4d6b795 MB |
2360 | } |
2361 | ||
e4d6b795 MB |
2362 | static void do_periodic_work(struct b43_wldev *dev) |
2363 | { | |
2364 | unsigned int state; | |
2365 | ||
2366 | state = dev->periodic_state; | |
42bb4cd5 | 2367 | if (state % 8 == 0) |
e4d6b795 | 2368 | b43_periodic_every120sec(dev); |
42bb4cd5 | 2369 | if (state % 4 == 0) |
e4d6b795 | 2370 | b43_periodic_every60sec(dev); |
42bb4cd5 | 2371 | if (state % 2 == 0) |
e4d6b795 | 2372 | b43_periodic_every30sec(dev); |
42bb4cd5 | 2373 | b43_periodic_every15sec(dev); |
e4d6b795 MB |
2374 | } |
2375 | ||
05b64b36 MB |
2376 | /* Periodic work locking policy: |
2377 | * The whole periodic work handler is protected by | |
2378 | * wl->mutex. If another lock is needed somewhere in the | |
2379 | * pwork callchain, it's aquired in-place, where it's needed. | |
e4d6b795 | 2380 | */ |
e4d6b795 MB |
2381 | static void b43_periodic_work_handler(struct work_struct *work) |
2382 | { | |
05b64b36 MB |
2383 | struct b43_wldev *dev = container_of(work, struct b43_wldev, |
2384 | periodic_work.work); | |
2385 | struct b43_wl *wl = dev->wl; | |
2386 | unsigned long delay; | |
e4d6b795 | 2387 | |
05b64b36 | 2388 | mutex_lock(&wl->mutex); |
e4d6b795 MB |
2389 | |
2390 | if (unlikely(b43_status(dev) != B43_STAT_STARTED)) | |
2391 | goto out; | |
2392 | if (b43_debug(dev, B43_DBG_PWORK_STOP)) | |
2393 | goto out_requeue; | |
2394 | ||
05b64b36 | 2395 | do_periodic_work(dev); |
e4d6b795 | 2396 | |
e4d6b795 | 2397 | dev->periodic_state++; |
42bb4cd5 | 2398 | out_requeue: |
e4d6b795 MB |
2399 | if (b43_debug(dev, B43_DBG_PWORK_FAST)) |
2400 | delay = msecs_to_jiffies(50); | |
2401 | else | |
82cd682d | 2402 | delay = round_jiffies_relative(HZ * 15); |
05b64b36 | 2403 | queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay); |
42bb4cd5 | 2404 | out: |
05b64b36 | 2405 | mutex_unlock(&wl->mutex); |
e4d6b795 MB |
2406 | } |
2407 | ||
2408 | static void b43_periodic_tasks_setup(struct b43_wldev *dev) | |
2409 | { | |
2410 | struct delayed_work *work = &dev->periodic_work; | |
2411 | ||
2412 | dev->periodic_state = 0; | |
2413 | INIT_DELAYED_WORK(work, b43_periodic_work_handler); | |
2414 | queue_delayed_work(dev->wl->hw->workqueue, work, 0); | |
2415 | } | |
2416 | ||
2417 | /* Validate access to the chip (SHM) */ | |
2418 | static int b43_validate_chipaccess(struct b43_wldev *dev) | |
2419 | { | |
2420 | u32 value; | |
2421 | u32 shm_backup; | |
2422 | ||
2423 | shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0); | |
2424 | b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA); | |
2425 | if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA) | |
2426 | goto error; | |
2427 | b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55); | |
2428 | if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55) | |
2429 | goto error; | |
2430 | b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup); | |
2431 | ||
2432 | value = b43_read32(dev, B43_MMIO_MACCTL); | |
2433 | if ((value | B43_MACCTL_GMODE) != | |
2434 | (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED)) | |
2435 | goto error; | |
2436 | ||
2437 | value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); | |
2438 | if (value) | |
2439 | goto error; | |
2440 | ||
2441 | return 0; | |
2442 | error: | |
2443 | b43err(dev->wl, "Failed to validate the chipaccess\n"); | |
2444 | return -ENODEV; | |
2445 | } | |
2446 | ||
2447 | static void b43_security_init(struct b43_wldev *dev) | |
2448 | { | |
2449 | dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; | |
2450 | B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); | |
2451 | dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP); | |
2452 | /* KTP is a word address, but we address SHM bytewise. | |
2453 | * So multiply by two. | |
2454 | */ | |
2455 | dev->ktp *= 2; | |
2456 | if (dev->dev->id.revision >= 5) { | |
2457 | /* Number of RCMTA address slots */ | |
2458 | b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8); | |
2459 | } | |
2460 | b43_clear_keys(dev); | |
2461 | } | |
2462 | ||
2463 | static int b43_rng_read(struct hwrng *rng, u32 * data) | |
2464 | { | |
2465 | struct b43_wl *wl = (struct b43_wl *)rng->priv; | |
2466 | unsigned long flags; | |
2467 | ||
2468 | /* Don't take wl->mutex here, as it could deadlock with | |
2469 | * hwrng internal locking. It's not needed to take | |
2470 | * wl->mutex here, anyway. */ | |
2471 | ||
2472 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2473 | *data = b43_read16(wl->current_dev, B43_MMIO_RNG); | |
2474 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2475 | ||
2476 | return (sizeof(u16)); | |
2477 | } | |
2478 | ||
2479 | static void b43_rng_exit(struct b43_wl *wl) | |
2480 | { | |
2481 | if (wl->rng_initialized) | |
2482 | hwrng_unregister(&wl->rng); | |
2483 | } | |
2484 | ||
2485 | static int b43_rng_init(struct b43_wl *wl) | |
2486 | { | |
2487 | int err; | |
2488 | ||
2489 | snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), | |
2490 | "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); | |
2491 | wl->rng.name = wl->rng_name; | |
2492 | wl->rng.data_read = b43_rng_read; | |
2493 | wl->rng.priv = (unsigned long)wl; | |
2494 | wl->rng_initialized = 1; | |
2495 | err = hwrng_register(&wl->rng); | |
2496 | if (err) { | |
2497 | wl->rng_initialized = 0; | |
2498 | b43err(wl, "Failed to register the random " | |
2499 | "number generator (%d)\n", err); | |
2500 | } | |
2501 | ||
2502 | return err; | |
2503 | } | |
2504 | ||
40faacc4 MB |
2505 | static int b43_op_tx(struct ieee80211_hw *hw, |
2506 | struct sk_buff *skb, | |
2507 | struct ieee80211_tx_control *ctl) | |
e4d6b795 MB |
2508 | { |
2509 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
2510 | struct b43_wldev *dev = wl->current_dev; | |
2511 | int err = -ENODEV; | |
2512 | unsigned long flags; | |
2513 | ||
2514 | if (unlikely(!dev)) | |
2515 | goto out; | |
2516 | if (unlikely(b43_status(dev) < B43_STAT_STARTED)) | |
2517 | goto out; | |
2518 | /* DMA-TX is done without a global lock. */ | |
2519 | if (b43_using_pio(dev)) { | |
2520 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2521 | err = b43_pio_tx(dev, skb, ctl); | |
2522 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2523 | } else | |
2524 | err = b43_dma_tx(dev, skb, ctl); | |
40faacc4 | 2525 | out: |
e4d6b795 MB |
2526 | if (unlikely(err)) |
2527 | return NETDEV_TX_BUSY; | |
2528 | return NETDEV_TX_OK; | |
2529 | } | |
2530 | ||
40faacc4 MB |
2531 | static int b43_op_conf_tx(struct ieee80211_hw *hw, |
2532 | int queue, | |
2533 | const struct ieee80211_tx_queue_params *params) | |
e4d6b795 MB |
2534 | { |
2535 | return 0; | |
2536 | } | |
2537 | ||
40faacc4 MB |
2538 | static int b43_op_get_tx_stats(struct ieee80211_hw *hw, |
2539 | struct ieee80211_tx_queue_stats *stats) | |
e4d6b795 MB |
2540 | { |
2541 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
2542 | struct b43_wldev *dev = wl->current_dev; | |
2543 | unsigned long flags; | |
2544 | int err = -ENODEV; | |
2545 | ||
2546 | if (!dev) | |
2547 | goto out; | |
2548 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2549 | if (likely(b43_status(dev) >= B43_STAT_STARTED)) { | |
2550 | if (b43_using_pio(dev)) | |
2551 | b43_pio_get_tx_stats(dev, stats); | |
2552 | else | |
2553 | b43_dma_get_tx_stats(dev, stats); | |
2554 | err = 0; | |
2555 | } | |
2556 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
40faacc4 | 2557 | out: |
e4d6b795 MB |
2558 | return err; |
2559 | } | |
2560 | ||
40faacc4 MB |
2561 | static int b43_op_get_stats(struct ieee80211_hw *hw, |
2562 | struct ieee80211_low_level_stats *stats) | |
e4d6b795 MB |
2563 | { |
2564 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
2565 | unsigned long flags; | |
2566 | ||
2567 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2568 | memcpy(stats, &wl->ieee_stats, sizeof(*stats)); | |
2569 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2570 | ||
2571 | return 0; | |
2572 | } | |
2573 | ||
2574 | static const char *phymode_to_string(unsigned int phymode) | |
2575 | { | |
2576 | switch (phymode) { | |
2577 | case B43_PHYMODE_A: | |
2578 | return "A"; | |
2579 | case B43_PHYMODE_B: | |
2580 | return "B"; | |
2581 | case B43_PHYMODE_G: | |
2582 | return "G"; | |
2583 | default: | |
2584 | B43_WARN_ON(1); | |
2585 | } | |
2586 | return ""; | |
2587 | } | |
2588 | ||
2589 | static int find_wldev_for_phymode(struct b43_wl *wl, | |
2590 | unsigned int phymode, | |
2591 | struct b43_wldev **dev, bool * gmode) | |
2592 | { | |
2593 | struct b43_wldev *d; | |
2594 | ||
2595 | list_for_each_entry(d, &wl->devlist, list) { | |
2596 | if (d->phy.possible_phymodes & phymode) { | |
2597 | /* Ok, this device supports the PHY-mode. | |
2598 | * Now figure out how the gmode bit has to be | |
2599 | * set to support it. */ | |
2600 | if (phymode == B43_PHYMODE_A) | |
2601 | *gmode = 0; | |
2602 | else | |
2603 | *gmode = 1; | |
2604 | *dev = d; | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | } | |
2609 | ||
2610 | return -ESRCH; | |
2611 | } | |
2612 | ||
2613 | static void b43_put_phy_into_reset(struct b43_wldev *dev) | |
2614 | { | |
2615 | struct ssb_device *sdev = dev->dev; | |
2616 | u32 tmslow; | |
2617 | ||
2618 | tmslow = ssb_read32(sdev, SSB_TMSLOW); | |
2619 | tmslow &= ~B43_TMSLOW_GMODE; | |
2620 | tmslow |= B43_TMSLOW_PHYRESET; | |
2621 | tmslow |= SSB_TMSLOW_FGC; | |
2622 | ssb_write32(sdev, SSB_TMSLOW, tmslow); | |
2623 | msleep(1); | |
2624 | ||
2625 | tmslow = ssb_read32(sdev, SSB_TMSLOW); | |
2626 | tmslow &= ~SSB_TMSLOW_FGC; | |
2627 | tmslow |= B43_TMSLOW_PHYRESET; | |
2628 | ssb_write32(sdev, SSB_TMSLOW, tmslow); | |
2629 | msleep(1); | |
2630 | } | |
2631 | ||
2632 | /* Expects wl->mutex locked */ | |
2633 | static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode) | |
2634 | { | |
2635 | struct b43_wldev *up_dev; | |
2636 | struct b43_wldev *down_dev; | |
2637 | int err; | |
2638 | bool gmode = 0; | |
2639 | int prev_status; | |
2640 | ||
2641 | err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); | |
2642 | if (err) { | |
2643 | b43err(wl, "Could not find a device for %s-PHY mode\n", | |
2644 | phymode_to_string(new_mode)); | |
2645 | return err; | |
2646 | } | |
2647 | if ((up_dev == wl->current_dev) && | |
2648 | (!!wl->current_dev->phy.gmode == !!gmode)) { | |
2649 | /* This device is already running. */ | |
2650 | return 0; | |
2651 | } | |
2652 | b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n", | |
2653 | phymode_to_string(new_mode)); | |
2654 | down_dev = wl->current_dev; | |
2655 | ||
2656 | prev_status = b43_status(down_dev); | |
2657 | /* Shutdown the currently running core. */ | |
2658 | if (prev_status >= B43_STAT_STARTED) | |
2659 | b43_wireless_core_stop(down_dev); | |
2660 | if (prev_status >= B43_STAT_INITIALIZED) | |
2661 | b43_wireless_core_exit(down_dev); | |
2662 | ||
2663 | if (down_dev != up_dev) { | |
2664 | /* We switch to a different core, so we put PHY into | |
2665 | * RESET on the old core. */ | |
2666 | b43_put_phy_into_reset(down_dev); | |
2667 | } | |
2668 | ||
2669 | /* Now start the new core. */ | |
2670 | up_dev->phy.gmode = gmode; | |
2671 | if (prev_status >= B43_STAT_INITIALIZED) { | |
2672 | err = b43_wireless_core_init(up_dev); | |
2673 | if (err) { | |
2674 | b43err(wl, "Fatal: Could not initialize device for " | |
2675 | "newly selected %s-PHY mode\n", | |
2676 | phymode_to_string(new_mode)); | |
2677 | goto init_failure; | |
2678 | } | |
2679 | } | |
2680 | if (prev_status >= B43_STAT_STARTED) { | |
2681 | err = b43_wireless_core_start(up_dev); | |
2682 | if (err) { | |
2683 | b43err(wl, "Fatal: Coult not start device for " | |
2684 | "newly selected %s-PHY mode\n", | |
2685 | phymode_to_string(new_mode)); | |
2686 | b43_wireless_core_exit(up_dev); | |
2687 | goto init_failure; | |
2688 | } | |
2689 | } | |
2690 | B43_WARN_ON(b43_status(up_dev) != prev_status); | |
2691 | ||
2692 | wl->current_dev = up_dev; | |
2693 | ||
2694 | return 0; | |
2695 | init_failure: | |
2696 | /* Whoops, failed to init the new core. No core is operating now. */ | |
2697 | wl->current_dev = NULL; | |
2698 | return err; | |
2699 | } | |
2700 | ||
2701 | static int b43_antenna_from_ieee80211(u8 antenna) | |
2702 | { | |
2703 | switch (antenna) { | |
2704 | case 0: /* default/diversity */ | |
2705 | return B43_ANTENNA_DEFAULT; | |
2706 | case 1: /* Antenna 0 */ | |
2707 | return B43_ANTENNA0; | |
2708 | case 2: /* Antenna 1 */ | |
2709 | return B43_ANTENNA1; | |
2710 | default: | |
2711 | return B43_ANTENNA_DEFAULT; | |
2712 | } | |
2713 | } | |
2714 | ||
40faacc4 | 2715 | static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) |
e4d6b795 MB |
2716 | { |
2717 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
2718 | struct b43_wldev *dev; | |
2719 | struct b43_phy *phy; | |
2720 | unsigned long flags; | |
2721 | unsigned int new_phymode = 0xFFFF; | |
2722 | int antenna_tx; | |
2723 | int antenna_rx; | |
2724 | int err = 0; | |
2725 | u32 savedirqs; | |
2726 | ||
2727 | antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx); | |
2728 | antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx); | |
2729 | ||
2730 | mutex_lock(&wl->mutex); | |
2731 | ||
2732 | /* Switch the PHY mode (if necessary). */ | |
2733 | switch (conf->phymode) { | |
2734 | case MODE_IEEE80211A: | |
2735 | new_phymode = B43_PHYMODE_A; | |
2736 | break; | |
2737 | case MODE_IEEE80211B: | |
2738 | new_phymode = B43_PHYMODE_B; | |
2739 | break; | |
2740 | case MODE_IEEE80211G: | |
2741 | new_phymode = B43_PHYMODE_G; | |
2742 | break; | |
2743 | default: | |
2744 | B43_WARN_ON(1); | |
2745 | } | |
2746 | err = b43_switch_phymode(wl, new_phymode); | |
2747 | if (err) | |
2748 | goto out_unlock_mutex; | |
2749 | dev = wl->current_dev; | |
2750 | phy = &dev->phy; | |
2751 | ||
2752 | /* Disable IRQs while reconfiguring the device. | |
2753 | * This makes it possible to drop the spinlock throughout | |
2754 | * the reconfiguration process. */ | |
2755 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2756 | if (b43_status(dev) < B43_STAT_STARTED) { | |
2757 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2758 | goto out_unlock_mutex; | |
2759 | } | |
2760 | savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL); | |
2761 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2762 | b43_synchronize_irq(dev); | |
2763 | ||
2764 | /* Switch to the requested channel. | |
2765 | * The firmware takes care of races with the TX handler. */ | |
2766 | if (conf->channel_val != phy->channel) | |
2767 | b43_radio_selectchannel(dev, conf->channel_val, 0); | |
2768 | ||
2769 | /* Enable/Disable ShortSlot timing. */ | |
2770 | if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) != | |
2771 | dev->short_slot) { | |
2772 | B43_WARN_ON(phy->type != B43_PHYTYPE_G); | |
2773 | if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) | |
2774 | b43_short_slot_timing_enable(dev); | |
2775 | else | |
2776 | b43_short_slot_timing_disable(dev); | |
2777 | } | |
2778 | ||
d42ce84a JB |
2779 | dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP); |
2780 | ||
e4d6b795 MB |
2781 | /* Adjust the desired TX power level. */ |
2782 | if (conf->power_level != 0) { | |
2783 | if (conf->power_level != phy->power_level) { | |
2784 | phy->power_level = conf->power_level; | |
2785 | b43_phy_xmitpower(dev); | |
2786 | } | |
2787 | } | |
2788 | ||
2789 | /* Antennas for RX and management frame TX. */ | |
2790 | b43_mgmtframe_txantenna(dev, antenna_tx); | |
2791 | b43_set_rx_antenna(dev, antenna_rx); | |
2792 | ||
2793 | /* Update templates for AP mode. */ | |
2794 | if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) | |
2795 | b43_set_beacon_int(dev, conf->beacon_int); | |
2796 | ||
fda9abcf MB |
2797 | if (!!conf->radio_enabled != phy->radio_on) { |
2798 | if (conf->radio_enabled) { | |
2799 | b43_radio_turn_on(dev); | |
2800 | b43info(dev->wl, "Radio turned on by software\n"); | |
2801 | if (!dev->radio_hw_enable) { | |
2802 | b43info(dev->wl, "The hardware RF-kill button " | |
2803 | "still turns the radio physically off. " | |
2804 | "Press the button to turn it on.\n"); | |
2805 | } | |
2806 | } else { | |
8e9f7529 | 2807 | b43_radio_turn_off(dev, 0); |
fda9abcf MB |
2808 | b43info(dev->wl, "Radio turned off by software\n"); |
2809 | } | |
2810 | } | |
2811 | ||
e4d6b795 MB |
2812 | spin_lock_irqsave(&wl->irq_lock, flags); |
2813 | b43_interrupt_enable(dev, savedirqs); | |
2814 | mmiowb(); | |
2815 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2816 | out_unlock_mutex: | |
2817 | mutex_unlock(&wl->mutex); | |
2818 | ||
2819 | return err; | |
2820 | } | |
2821 | ||
40faacc4 | 2822 | static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
4150c572 JB |
2823 | const u8 *local_addr, const u8 *addr, |
2824 | struct ieee80211_key_conf *key) | |
e4d6b795 MB |
2825 | { |
2826 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
c6dfc9a8 | 2827 | struct b43_wldev *dev; |
e4d6b795 MB |
2828 | unsigned long flags; |
2829 | u8 algorithm; | |
2830 | u8 index; | |
c6dfc9a8 | 2831 | int err; |
0795af57 | 2832 | DECLARE_MAC_BUF(mac); |
e4d6b795 MB |
2833 | |
2834 | if (modparam_nohwcrypt) | |
2835 | return -ENOSPC; /* User disabled HW-crypto */ | |
2836 | ||
c6dfc9a8 MB |
2837 | mutex_lock(&wl->mutex); |
2838 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2839 | ||
2840 | dev = wl->current_dev; | |
2841 | err = -ENODEV; | |
2842 | if (!dev || b43_status(dev) < B43_STAT_INITIALIZED) | |
2843 | goto out_unlock; | |
2844 | ||
2845 | err = -EINVAL; | |
e4d6b795 | 2846 | switch (key->alg) { |
e4d6b795 MB |
2847 | case ALG_WEP: |
2848 | if (key->keylen == 5) | |
2849 | algorithm = B43_SEC_ALGO_WEP40; | |
2850 | else | |
2851 | algorithm = B43_SEC_ALGO_WEP104; | |
2852 | break; | |
2853 | case ALG_TKIP: | |
2854 | algorithm = B43_SEC_ALGO_TKIP; | |
2855 | break; | |
2856 | case ALG_CCMP: | |
2857 | algorithm = B43_SEC_ALGO_AES; | |
2858 | break; | |
2859 | default: | |
2860 | B43_WARN_ON(1); | |
c6dfc9a8 | 2861 | goto out_unlock; |
e4d6b795 | 2862 | } |
e4d6b795 MB |
2863 | index = (u8) (key->keyidx); |
2864 | if (index > 3) | |
e4d6b795 | 2865 | goto out_unlock; |
e4d6b795 MB |
2866 | |
2867 | switch (cmd) { | |
2868 | case SET_KEY: | |
2869 | if (algorithm == B43_SEC_ALGO_TKIP) { | |
2870 | /* FIXME: No TKIP hardware encryption for now. */ | |
2871 | err = -EOPNOTSUPP; | |
2872 | goto out_unlock; | |
2873 | } | |
2874 | ||
2875 | if (is_broadcast_ether_addr(addr)) { | |
2876 | /* addr is FF:FF:FF:FF:FF:FF for default keys */ | |
2877 | err = b43_key_write(dev, index, algorithm, | |
2878 | key->key, key->keylen, NULL, key); | |
2879 | } else { | |
2880 | /* | |
2881 | * either pairwise key or address is 00:00:00:00:00:00 | |
2882 | * for transmit-only keys | |
2883 | */ | |
2884 | err = b43_key_write(dev, -1, algorithm, | |
2885 | key->key, key->keylen, addr, key); | |
2886 | } | |
2887 | if (err) | |
2888 | goto out_unlock; | |
2889 | ||
2890 | if (algorithm == B43_SEC_ALGO_WEP40 || | |
2891 | algorithm == B43_SEC_ALGO_WEP104) { | |
2892 | b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS); | |
2893 | } else { | |
2894 | b43_hf_write(dev, | |
2895 | b43_hf_read(dev) & ~B43_HF_USEDEFKEYS); | |
2896 | } | |
2897 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
2898 | break; | |
2899 | case DISABLE_KEY: { | |
2900 | err = b43_key_clear(dev, key->hw_key_idx); | |
2901 | if (err) | |
2902 | goto out_unlock; | |
2903 | break; | |
2904 | } | |
2905 | default: | |
2906 | B43_WARN_ON(1); | |
2907 | } | |
2908 | out_unlock: | |
2909 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2910 | mutex_unlock(&wl->mutex); | |
e4d6b795 MB |
2911 | if (!err) { |
2912 | b43dbg(wl, "%s hardware based encryption for keyidx: %d, " | |
0795af57 | 2913 | "mac: %s\n", |
e4d6b795 | 2914 | cmd == SET_KEY ? "Using" : "Disabling", key->keyidx, |
0795af57 | 2915 | print_mac(mac, addr)); |
e4d6b795 MB |
2916 | } |
2917 | return err; | |
2918 | } | |
2919 | ||
40faacc4 MB |
2920 | static void b43_op_configure_filter(struct ieee80211_hw *hw, |
2921 | unsigned int changed, unsigned int *fflags, | |
2922 | int mc_count, struct dev_addr_list *mc_list) | |
e4d6b795 MB |
2923 | { |
2924 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
2925 | struct b43_wldev *dev = wl->current_dev; | |
2926 | unsigned long flags; | |
2927 | ||
4150c572 JB |
2928 | if (!dev) { |
2929 | *fflags = 0; | |
e4d6b795 | 2930 | return; |
e4d6b795 | 2931 | } |
4150c572 JB |
2932 | |
2933 | spin_lock_irqsave(&wl->irq_lock, flags); | |
2934 | *fflags &= FIF_PROMISC_IN_BSS | | |
2935 | FIF_ALLMULTI | | |
2936 | FIF_FCSFAIL | | |
2937 | FIF_PLCPFAIL | | |
2938 | FIF_CONTROL | | |
2939 | FIF_OTHER_BSS | | |
2940 | FIF_BCN_PRBRESP_PROMISC; | |
2941 | ||
2942 | changed &= FIF_PROMISC_IN_BSS | | |
2943 | FIF_ALLMULTI | | |
2944 | FIF_FCSFAIL | | |
2945 | FIF_PLCPFAIL | | |
2946 | FIF_CONTROL | | |
2947 | FIF_OTHER_BSS | | |
2948 | FIF_BCN_PRBRESP_PROMISC; | |
2949 | ||
2950 | wl->filter_flags = *fflags; | |
2951 | ||
2952 | if (changed && b43_status(dev) >= B43_STAT_INITIALIZED) | |
2953 | b43_adjust_opmode(dev); | |
e4d6b795 MB |
2954 | spin_unlock_irqrestore(&wl->irq_lock, flags); |
2955 | } | |
2956 | ||
40faacc4 MB |
2957 | static int b43_op_config_interface(struct ieee80211_hw *hw, |
2958 | int if_id, | |
2959 | struct ieee80211_if_conf *conf) | |
e4d6b795 MB |
2960 | { |
2961 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
2962 | struct b43_wldev *dev = wl->current_dev; | |
2963 | unsigned long flags; | |
2964 | ||
2965 | if (!dev) | |
2966 | return -ENODEV; | |
2967 | mutex_lock(&wl->mutex); | |
2968 | spin_lock_irqsave(&wl->irq_lock, flags); | |
4150c572 JB |
2969 | B43_WARN_ON(wl->if_id != if_id); |
2970 | if (conf->bssid) | |
2971 | memcpy(wl->bssid, conf->bssid, ETH_ALEN); | |
2972 | else | |
2973 | memset(wl->bssid, 0, ETH_ALEN); | |
2974 | if (b43_status(dev) >= B43_STAT_INITIALIZED) { | |
2975 | if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) { | |
2976 | B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP); | |
2977 | b43_set_ssid(dev, conf->ssid, conf->ssid_len); | |
2978 | if (conf->beacon) | |
2979 | b43_refresh_templates(dev, conf->beacon); | |
e4d6b795 | 2980 | } |
4150c572 | 2981 | b43_write_mac_bssid_templates(dev); |
e4d6b795 MB |
2982 | } |
2983 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
2984 | mutex_unlock(&wl->mutex); | |
2985 | ||
2986 | return 0; | |
2987 | } | |
2988 | ||
2989 | /* Locking: wl->mutex */ | |
2990 | static void b43_wireless_core_stop(struct b43_wldev *dev) | |
2991 | { | |
2992 | struct b43_wl *wl = dev->wl; | |
2993 | unsigned long flags; | |
2994 | ||
2995 | if (b43_status(dev) < B43_STAT_STARTED) | |
2996 | return; | |
a19d12d7 SB |
2997 | |
2998 | /* Disable and sync interrupts. We must do this before than | |
2999 | * setting the status to INITIALIZED, as the interrupt handler | |
3000 | * won't care about IRQs then. */ | |
3001 | spin_lock_irqsave(&wl->irq_lock, flags); | |
3002 | dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL); | |
3003 | b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */ | |
3004 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
3005 | b43_synchronize_irq(dev); | |
3006 | ||
e4d6b795 MB |
3007 | b43_set_status(dev, B43_STAT_INITIALIZED); |
3008 | ||
3009 | mutex_unlock(&wl->mutex); | |
3010 | /* Must unlock as it would otherwise deadlock. No races here. | |
3011 | * Cancel the possibly running self-rearming periodic work. */ | |
3012 | cancel_delayed_work_sync(&dev->periodic_work); | |
3013 | mutex_lock(&wl->mutex); | |
3014 | ||
3015 | ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy. | |
3016 | ||
e4d6b795 MB |
3017 | b43_mac_suspend(dev); |
3018 | free_irq(dev->dev->irq, dev); | |
3019 | b43dbg(wl, "Wireless interface stopped\n"); | |
3020 | } | |
3021 | ||
3022 | /* Locking: wl->mutex */ | |
3023 | static int b43_wireless_core_start(struct b43_wldev *dev) | |
3024 | { | |
3025 | int err; | |
3026 | ||
3027 | B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED); | |
3028 | ||
3029 | drain_txstatus_queue(dev); | |
3030 | err = request_irq(dev->dev->irq, b43_interrupt_handler, | |
3031 | IRQF_SHARED, KBUILD_MODNAME, dev); | |
3032 | if (err) { | |
3033 | b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq); | |
3034 | goto out; | |
3035 | } | |
3036 | ||
3037 | /* We are ready to run. */ | |
3038 | b43_set_status(dev, B43_STAT_STARTED); | |
3039 | ||
3040 | /* Start data flow (TX/RX). */ | |
3041 | b43_mac_enable(dev); | |
3042 | b43_interrupt_enable(dev, dev->irq_savedstate); | |
3043 | ieee80211_start_queues(dev->wl->hw); | |
3044 | ||
3045 | /* Start maintainance work */ | |
3046 | b43_periodic_tasks_setup(dev); | |
3047 | ||
3048 | b43dbg(dev->wl, "Wireless interface started\n"); | |
3049 | out: | |
3050 | return err; | |
3051 | } | |
3052 | ||
3053 | /* Get PHY and RADIO versioning numbers */ | |
3054 | static int b43_phy_versioning(struct b43_wldev *dev) | |
3055 | { | |
3056 | struct b43_phy *phy = &dev->phy; | |
3057 | u32 tmp; | |
3058 | u8 analog_type; | |
3059 | u8 phy_type; | |
3060 | u8 phy_rev; | |
3061 | u16 radio_manuf; | |
3062 | u16 radio_ver; | |
3063 | u16 radio_rev; | |
3064 | int unsupported = 0; | |
3065 | ||
3066 | /* Get PHY versioning */ | |
3067 | tmp = b43_read16(dev, B43_MMIO_PHY_VER); | |
3068 | analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT; | |
3069 | phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT; | |
3070 | phy_rev = (tmp & B43_PHYVER_VERSION); | |
3071 | switch (phy_type) { | |
3072 | case B43_PHYTYPE_A: | |
3073 | if (phy_rev >= 4) | |
3074 | unsupported = 1; | |
3075 | break; | |
3076 | case B43_PHYTYPE_B: | |
3077 | if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6 | |
3078 | && phy_rev != 7) | |
3079 | unsupported = 1; | |
3080 | break; | |
3081 | case B43_PHYTYPE_G: | |
013978b6 | 3082 | if (phy_rev > 9) |
e4d6b795 MB |
3083 | unsupported = 1; |
3084 | break; | |
3085 | default: | |
3086 | unsupported = 1; | |
3087 | }; | |
3088 | if (unsupported) { | |
3089 | b43err(dev->wl, "FOUND UNSUPPORTED PHY " | |
3090 | "(Analog %u, Type %u, Revision %u)\n", | |
3091 | analog_type, phy_type, phy_rev); | |
3092 | return -EOPNOTSUPP; | |
3093 | } | |
3094 | b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n", | |
3095 | analog_type, phy_type, phy_rev); | |
3096 | ||
3097 | /* Get RADIO versioning */ | |
3098 | if (dev->dev->bus->chip_id == 0x4317) { | |
3099 | if (dev->dev->bus->chip_rev == 0) | |
3100 | tmp = 0x3205017F; | |
3101 | else if (dev->dev->bus->chip_rev == 1) | |
3102 | tmp = 0x4205017F; | |
3103 | else | |
3104 | tmp = 0x5205017F; | |
3105 | } else { | |
3106 | b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); | |
3107 | tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH); | |
3108 | tmp <<= 16; | |
3109 | b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); | |
3110 | tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW); | |
3111 | } | |
3112 | radio_manuf = (tmp & 0x00000FFF); | |
3113 | radio_ver = (tmp & 0x0FFFF000) >> 12; | |
3114 | radio_rev = (tmp & 0xF0000000) >> 28; | |
3115 | switch (phy_type) { | |
3116 | case B43_PHYTYPE_A: | |
3117 | if (radio_ver != 0x2060) | |
3118 | unsupported = 1; | |
3119 | if (radio_rev != 1) | |
3120 | unsupported = 1; | |
3121 | if (radio_manuf != 0x17F) | |
3122 | unsupported = 1; | |
3123 | break; | |
3124 | case B43_PHYTYPE_B: | |
3125 | if ((radio_ver & 0xFFF0) != 0x2050) | |
3126 | unsupported = 1; | |
3127 | break; | |
3128 | case B43_PHYTYPE_G: | |
3129 | if (radio_ver != 0x2050) | |
3130 | unsupported = 1; | |
3131 | break; | |
3132 | default: | |
3133 | B43_WARN_ON(1); | |
3134 | } | |
3135 | if (unsupported) { | |
3136 | b43err(dev->wl, "FOUND UNSUPPORTED RADIO " | |
3137 | "(Manuf 0x%X, Version 0x%X, Revision %u)\n", | |
3138 | radio_manuf, radio_ver, radio_rev); | |
3139 | return -EOPNOTSUPP; | |
3140 | } | |
3141 | b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n", | |
3142 | radio_manuf, radio_ver, radio_rev); | |
3143 | ||
3144 | phy->radio_manuf = radio_manuf; | |
3145 | phy->radio_ver = radio_ver; | |
3146 | phy->radio_rev = radio_rev; | |
3147 | ||
3148 | phy->analog = analog_type; | |
3149 | phy->type = phy_type; | |
3150 | phy->rev = phy_rev; | |
3151 | ||
3152 | return 0; | |
3153 | } | |
3154 | ||
3155 | static void setup_struct_phy_for_init(struct b43_wldev *dev, | |
3156 | struct b43_phy *phy) | |
3157 | { | |
3158 | struct b43_txpower_lo_control *lo; | |
3159 | int i; | |
3160 | ||
3161 | memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); | |
3162 | memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); | |
3163 | ||
3164 | /* Flags */ | |
3165 | phy->locked = 0; | |
3166 | ||
3167 | phy->aci_enable = 0; | |
3168 | phy->aci_wlan_automatic = 0; | |
3169 | phy->aci_hw_rssi = 0; | |
3170 | ||
fda9abcf MB |
3171 | phy->radio_off_context.valid = 0; |
3172 | ||
e4d6b795 MB |
3173 | lo = phy->lo_control; |
3174 | if (lo) { | |
3175 | memset(lo, 0, sizeof(*(phy->lo_control))); | |
3176 | lo->rebuild = 1; | |
3177 | lo->tx_bias = 0xFF; | |
3178 | } | |
3179 | phy->max_lb_gain = 0; | |
3180 | phy->trsw_rx_gain = 0; | |
3181 | phy->txpwr_offset = 0; | |
3182 | ||
3183 | /* NRSSI */ | |
3184 | phy->nrssislope = 0; | |
3185 | for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) | |
3186 | phy->nrssi[i] = -1000; | |
3187 | for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) | |
3188 | phy->nrssi_lt[i] = i; | |
3189 | ||
3190 | phy->lofcal = 0xFFFF; | |
3191 | phy->initval = 0xFFFF; | |
3192 | ||
3193 | spin_lock_init(&phy->lock); | |
3194 | phy->interfmode = B43_INTERFMODE_NONE; | |
3195 | phy->channel = 0xFF; | |
3196 | ||
3197 | phy->hardware_power_control = !!modparam_hwpctl; | |
3198 | } | |
3199 | ||
3200 | static void setup_struct_wldev_for_init(struct b43_wldev *dev) | |
3201 | { | |
3202 | /* Flags */ | |
3203 | dev->reg124_set_0x4 = 0; | |
6a724d68 MB |
3204 | /* Assume the radio is enabled. If it's not enabled, the state will |
3205 | * immediately get fixed on the first periodic work run. */ | |
3206 | dev->radio_hw_enable = 1; | |
e4d6b795 MB |
3207 | |
3208 | /* Stats */ | |
3209 | memset(&dev->stats, 0, sizeof(dev->stats)); | |
3210 | ||
3211 | setup_struct_phy_for_init(dev, &dev->phy); | |
3212 | ||
3213 | /* IRQ related flags */ | |
3214 | dev->irq_reason = 0; | |
3215 | memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); | |
3216 | dev->irq_savedstate = B43_IRQ_MASKTEMPLATE; | |
3217 | ||
3218 | dev->mac_suspended = 1; | |
3219 | ||
3220 | /* Noise calculation context */ | |
3221 | memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); | |
3222 | } | |
3223 | ||
3224 | static void b43_bluetooth_coext_enable(struct b43_wldev *dev) | |
3225 | { | |
3226 | struct ssb_sprom *sprom = &dev->dev->bus->sprom; | |
3227 | u32 hf; | |
3228 | ||
95de2841 | 3229 | if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST)) |
e4d6b795 MB |
3230 | return; |
3231 | if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode) | |
3232 | return; | |
3233 | ||
3234 | hf = b43_hf_read(dev); | |
95de2841 | 3235 | if (sprom->boardflags_lo & B43_BFL_BTCMOD) |
e4d6b795 MB |
3236 | hf |= B43_HF_BTCOEXALT; |
3237 | else | |
3238 | hf |= B43_HF_BTCOEX; | |
3239 | b43_hf_write(dev, hf); | |
3240 | //TODO | |
3241 | } | |
3242 | ||
3243 | static void b43_bluetooth_coext_disable(struct b43_wldev *dev) | |
3244 | { //TODO | |
3245 | } | |
3246 | ||
3247 | static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev) | |
3248 | { | |
3249 | #ifdef CONFIG_SSB_DRIVER_PCICORE | |
3250 | struct ssb_bus *bus = dev->dev->bus; | |
3251 | u32 tmp; | |
3252 | ||
3253 | if (bus->pcicore.dev && | |
3254 | bus->pcicore.dev->id.coreid == SSB_DEV_PCI && | |
3255 | bus->pcicore.dev->id.revision <= 5) { | |
3256 | /* IMCFGLO timeouts workaround. */ | |
3257 | tmp = ssb_read32(dev->dev, SSB_IMCFGLO); | |
3258 | tmp &= ~SSB_IMCFGLO_REQTO; | |
3259 | tmp &= ~SSB_IMCFGLO_SERTO; | |
3260 | switch (bus->bustype) { | |
3261 | case SSB_BUSTYPE_PCI: | |
3262 | case SSB_BUSTYPE_PCMCIA: | |
3263 | tmp |= 0x32; | |
3264 | break; | |
3265 | case SSB_BUSTYPE_SSB: | |
3266 | tmp |= 0x53; | |
3267 | break; | |
3268 | } | |
3269 | ssb_write32(dev->dev, SSB_IMCFGLO, tmp); | |
3270 | } | |
3271 | #endif /* CONFIG_SSB_DRIVER_PCICORE */ | |
3272 | } | |
3273 | ||
74cfdba7 MB |
3274 | /* Write the short and long frame retry limit values. */ |
3275 | static void b43_set_retry_limits(struct b43_wldev *dev, | |
3276 | unsigned int short_retry, | |
3277 | unsigned int long_retry) | |
3278 | { | |
3279 | /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing | |
3280 | * the chip-internal counter. */ | |
3281 | short_retry = min(short_retry, (unsigned int)0xF); | |
3282 | long_retry = min(long_retry, (unsigned int)0xF); | |
3283 | ||
3284 | b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, | |
3285 | short_retry); | |
3286 | b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, | |
3287 | long_retry); | |
3288 | } | |
3289 | ||
e4d6b795 MB |
3290 | /* Shutdown a wireless core */ |
3291 | /* Locking: wl->mutex */ | |
3292 | static void b43_wireless_core_exit(struct b43_wldev *dev) | |
3293 | { | |
3294 | struct b43_phy *phy = &dev->phy; | |
3295 | ||
3296 | B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED); | |
3297 | if (b43_status(dev) != B43_STAT_INITIALIZED) | |
3298 | return; | |
3299 | b43_set_status(dev, B43_STAT_UNINIT); | |
3300 | ||
1a8d1227 | 3301 | b43_leds_exit(dev); |
e4d6b795 MB |
3302 | b43_rng_exit(dev->wl); |
3303 | b43_pio_free(dev); | |
3304 | b43_dma_free(dev); | |
3305 | b43_chip_exit(dev); | |
8e9f7529 | 3306 | b43_radio_turn_off(dev, 1); |
e4d6b795 MB |
3307 | b43_switch_analog(dev, 0); |
3308 | if (phy->dyn_tssi_tbl) | |
3309 | kfree(phy->tssi2dbm); | |
3310 | kfree(phy->lo_control); | |
3311 | phy->lo_control = NULL; | |
3312 | ssb_device_disable(dev->dev, 0); | |
3313 | ssb_bus_may_powerdown(dev->dev->bus); | |
3314 | } | |
3315 | ||
3316 | /* Initialize a wireless core */ | |
3317 | static int b43_wireless_core_init(struct b43_wldev *dev) | |
3318 | { | |
3319 | struct b43_wl *wl = dev->wl; | |
3320 | struct ssb_bus *bus = dev->dev->bus; | |
3321 | struct ssb_sprom *sprom = &bus->sprom; | |
3322 | struct b43_phy *phy = &dev->phy; | |
3323 | int err; | |
3324 | u32 hf, tmp; | |
3325 | ||
3326 | B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); | |
3327 | ||
3328 | err = ssb_bus_powerup(bus, 0); | |
3329 | if (err) | |
3330 | goto out; | |
3331 | if (!ssb_device_is_enabled(dev->dev)) { | |
3332 | tmp = phy->gmode ? B43_TMSLOW_GMODE : 0; | |
3333 | b43_wireless_core_reset(dev, tmp); | |
3334 | } | |
3335 | ||
3336 | if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) { | |
3337 | phy->lo_control = | |
3338 | kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL); | |
3339 | if (!phy->lo_control) { | |
3340 | err = -ENOMEM; | |
3341 | goto err_busdown; | |
3342 | } | |
3343 | } | |
3344 | setup_struct_wldev_for_init(dev); | |
3345 | ||
3346 | err = b43_phy_init_tssi2dbm_table(dev); | |
3347 | if (err) | |
3348 | goto err_kfree_lo_control; | |
3349 | ||
3350 | /* Enable IRQ routing to this device. */ | |
3351 | ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev); | |
3352 | ||
3353 | b43_imcfglo_timeouts_workaround(dev); | |
3354 | b43_bluetooth_coext_disable(dev); | |
3355 | b43_phy_early_init(dev); | |
3356 | err = b43_chip_init(dev); | |
3357 | if (err) | |
3358 | goto err_kfree_tssitbl; | |
3359 | b43_shm_write16(dev, B43_SHM_SHARED, | |
3360 | B43_SHM_SH_WLCOREREV, dev->dev->id.revision); | |
3361 | hf = b43_hf_read(dev); | |
3362 | if (phy->type == B43_PHYTYPE_G) { | |
3363 | hf |= B43_HF_SYMW; | |
3364 | if (phy->rev == 1) | |
3365 | hf |= B43_HF_GDCW; | |
95de2841 | 3366 | if (sprom->boardflags_lo & B43_BFL_PACTRL) |
e4d6b795 MB |
3367 | hf |= B43_HF_OFDMPABOOST; |
3368 | } else if (phy->type == B43_PHYTYPE_B) { | |
3369 | hf |= B43_HF_SYMW; | |
3370 | if (phy->rev >= 2 && phy->radio_ver == 0x2050) | |
3371 | hf &= ~B43_HF_GDCW; | |
3372 | } | |
3373 | b43_hf_write(dev, hf); | |
3374 | ||
74cfdba7 MB |
3375 | b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT, |
3376 | B43_DEFAULT_LONG_RETRY_LIMIT); | |
e4d6b795 MB |
3377 | b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3); |
3378 | b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2); | |
3379 | ||
3380 | /* Disable sending probe responses from firmware. | |
3381 | * Setting the MaxTime to one usec will always trigger | |
3382 | * a timeout, so we never send any probe resp. | |
3383 | * A timeout of zero is infinite. */ | |
3384 | b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1); | |
3385 | ||
3386 | b43_rate_memory_init(dev); | |
3387 | ||
3388 | /* Minimum Contention Window */ | |
3389 | if (phy->type == B43_PHYTYPE_B) { | |
3390 | b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F); | |
3391 | } else { | |
3392 | b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF); | |
3393 | } | |
3394 | /* Maximum Contention Window */ | |
3395 | b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF); | |
3396 | ||
3397 | do { | |
3398 | if (b43_using_pio(dev)) { | |
3399 | err = b43_pio_init(dev); | |
3400 | } else { | |
3401 | err = b43_dma_init(dev); | |
3402 | if (!err) | |
3403 | b43_qos_init(dev); | |
3404 | } | |
3405 | } while (err == -EAGAIN); | |
3406 | if (err) | |
3407 | goto err_chip_exit; | |
3408 | ||
3409 | //FIXME | |
3410 | #if 1 | |
3411 | b43_write16(dev, 0x0612, 0x0050); | |
3412 | b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050); | |
3413 | b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4); | |
3414 | #endif | |
3415 | ||
3416 | b43_bluetooth_coext_enable(dev); | |
3417 | ||
3418 | ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ | |
3419 | memset(wl->bssid, 0, ETH_ALEN); | |
4150c572 JB |
3420 | memset(wl->mac_addr, 0, ETH_ALEN); |
3421 | b43_upload_card_macaddress(dev); | |
e4d6b795 MB |
3422 | b43_security_init(dev); |
3423 | b43_rng_init(wl); | |
3424 | ||
3425 | b43_set_status(dev, B43_STAT_INITIALIZED); | |
3426 | ||
1a8d1227 LF |
3427 | b43_leds_init(dev); |
3428 | out: | |
e4d6b795 MB |
3429 | return err; |
3430 | ||
3431 | err_chip_exit: | |
3432 | b43_chip_exit(dev); | |
3433 | err_kfree_tssitbl: | |
3434 | if (phy->dyn_tssi_tbl) | |
3435 | kfree(phy->tssi2dbm); | |
3436 | err_kfree_lo_control: | |
3437 | kfree(phy->lo_control); | |
3438 | phy->lo_control = NULL; | |
3439 | err_busdown: | |
3440 | ssb_bus_may_powerdown(bus); | |
3441 | B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); | |
3442 | return err; | |
3443 | } | |
3444 | ||
40faacc4 MB |
3445 | static int b43_op_add_interface(struct ieee80211_hw *hw, |
3446 | struct ieee80211_if_init_conf *conf) | |
e4d6b795 MB |
3447 | { |
3448 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
3449 | struct b43_wldev *dev; | |
3450 | unsigned long flags; | |
3451 | int err = -EOPNOTSUPP; | |
4150c572 JB |
3452 | |
3453 | /* TODO: allow WDS/AP devices to coexist */ | |
3454 | ||
3455 | if (conf->type != IEEE80211_IF_TYPE_AP && | |
3456 | conf->type != IEEE80211_IF_TYPE_STA && | |
3457 | conf->type != IEEE80211_IF_TYPE_WDS && | |
3458 | conf->type != IEEE80211_IF_TYPE_IBSS) | |
3459 | return -EOPNOTSUPP; | |
e4d6b795 MB |
3460 | |
3461 | mutex_lock(&wl->mutex); | |
4150c572 | 3462 | if (wl->operating) |
e4d6b795 MB |
3463 | goto out_mutex_unlock; |
3464 | ||
3465 | b43dbg(wl, "Adding Interface type %d\n", conf->type); | |
3466 | ||
3467 | dev = wl->current_dev; | |
4150c572 JB |
3468 | wl->operating = 1; |
3469 | wl->if_id = conf->if_id; | |
3470 | wl->if_type = conf->type; | |
3471 | memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN); | |
3472 | ||
3473 | spin_lock_irqsave(&wl->irq_lock, flags); | |
3474 | b43_adjust_opmode(dev); | |
3475 | b43_upload_card_macaddress(dev); | |
3476 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
3477 | ||
3478 | err = 0; | |
3479 | out_mutex_unlock: | |
3480 | mutex_unlock(&wl->mutex); | |
3481 | ||
3482 | return err; | |
3483 | } | |
3484 | ||
40faacc4 MB |
3485 | static void b43_op_remove_interface(struct ieee80211_hw *hw, |
3486 | struct ieee80211_if_init_conf *conf) | |
4150c572 JB |
3487 | { |
3488 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
3489 | struct b43_wldev *dev = wl->current_dev; | |
3490 | unsigned long flags; | |
3491 | ||
3492 | b43dbg(wl, "Removing Interface type %d\n", conf->type); | |
3493 | ||
3494 | mutex_lock(&wl->mutex); | |
3495 | ||
3496 | B43_WARN_ON(!wl->operating); | |
3497 | B43_WARN_ON(wl->if_id != conf->if_id); | |
3498 | ||
3499 | wl->operating = 0; | |
3500 | ||
3501 | spin_lock_irqsave(&wl->irq_lock, flags); | |
3502 | b43_adjust_opmode(dev); | |
3503 | memset(wl->mac_addr, 0, ETH_ALEN); | |
3504 | b43_upload_card_macaddress(dev); | |
3505 | spin_unlock_irqrestore(&wl->irq_lock, flags); | |
3506 | ||
3507 | mutex_unlock(&wl->mutex); | |
3508 | } | |
3509 | ||
40faacc4 | 3510 | static int b43_op_start(struct ieee80211_hw *hw) |
4150c572 JB |
3511 | { |
3512 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
3513 | struct b43_wldev *dev = wl->current_dev; | |
3514 | int did_init = 0; | |
923403b8 | 3515 | int err = 0; |
4150c572 | 3516 | |
1a8d1227 LF |
3517 | /* First register RFkill. |
3518 | * LEDs that are registered later depend on it. */ | |
3519 | b43_rfkill_init(dev); | |
3520 | ||
4150c572 JB |
3521 | mutex_lock(&wl->mutex); |
3522 | ||
e4d6b795 MB |
3523 | if (b43_status(dev) < B43_STAT_INITIALIZED) { |
3524 | err = b43_wireless_core_init(dev); | |
3525 | if (err) | |
3526 | goto out_mutex_unlock; | |
3527 | did_init = 1; | |
3528 | } | |
4150c572 | 3529 | |
e4d6b795 MB |
3530 | if (b43_status(dev) < B43_STAT_STARTED) { |
3531 | err = b43_wireless_core_start(dev); | |
3532 | if (err) { | |
3533 | if (did_init) | |
3534 | b43_wireless_core_exit(dev); | |
3535 | goto out_mutex_unlock; | |
3536 | } | |
3537 | } | |
3538 | ||
4150c572 | 3539 | out_mutex_unlock: |
e4d6b795 MB |
3540 | mutex_unlock(&wl->mutex); |
3541 | ||
3542 | return err; | |
3543 | } | |
3544 | ||
40faacc4 | 3545 | static void b43_op_stop(struct ieee80211_hw *hw) |
e4d6b795 MB |
3546 | { |
3547 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
4150c572 | 3548 | struct b43_wldev *dev = wl->current_dev; |
e4d6b795 | 3549 | |
1a8d1227 LF |
3550 | b43_rfkill_exit(dev); |
3551 | ||
e4d6b795 | 3552 | mutex_lock(&wl->mutex); |
4150c572 JB |
3553 | if (b43_status(dev) >= B43_STAT_STARTED) |
3554 | b43_wireless_core_stop(dev); | |
3555 | b43_wireless_core_exit(dev); | |
e4d6b795 MB |
3556 | mutex_unlock(&wl->mutex); |
3557 | } | |
3558 | ||
74cfdba7 MB |
3559 | static int b43_op_set_retry_limit(struct ieee80211_hw *hw, |
3560 | u32 short_retry_limit, u32 long_retry_limit) | |
3561 | { | |
3562 | struct b43_wl *wl = hw_to_b43_wl(hw); | |
3563 | struct b43_wldev *dev; | |
3564 | int err = 0; | |
3565 | ||
3566 | mutex_lock(&wl->mutex); | |
3567 | dev = wl->current_dev; | |
3568 | if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) { | |
3569 | err = -ENODEV; | |
3570 | goto out_unlock; | |
3571 | } | |
3572 | b43_set_retry_limits(dev, short_retry_limit, long_retry_limit); | |
3573 | out_unlock: | |
3574 | mutex_unlock(&wl->mutex); | |
3575 | ||
3576 | return err; | |
3577 | } | |
3578 | ||
e4d6b795 | 3579 | static const struct ieee80211_ops b43_hw_ops = { |
40faacc4 MB |
3580 | .tx = b43_op_tx, |
3581 | .conf_tx = b43_op_conf_tx, | |
3582 | .add_interface = b43_op_add_interface, | |
3583 | .remove_interface = b43_op_remove_interface, | |
3584 | .config = b43_op_config, | |
3585 | .config_interface = b43_op_config_interface, | |
3586 | .configure_filter = b43_op_configure_filter, | |
3587 | .set_key = b43_op_set_key, | |
3588 | .get_stats = b43_op_get_stats, | |
3589 | .get_tx_stats = b43_op_get_tx_stats, | |
3590 | .start = b43_op_start, | |
3591 | .stop = b43_op_stop, | |
74cfdba7 | 3592 | .set_retry_limit = b43_op_set_retry_limit, |
e4d6b795 MB |
3593 | }; |
3594 | ||
3595 | /* Hard-reset the chip. Do not call this directly. | |
3596 | * Use b43_controller_restart() | |
3597 | */ | |
3598 | static void b43_chip_reset(struct work_struct *work) | |
3599 | { | |
3600 | struct b43_wldev *dev = | |
3601 | container_of(work, struct b43_wldev, restart_work); | |
3602 | struct b43_wl *wl = dev->wl; | |
3603 | int err = 0; | |
3604 | int prev_status; | |
3605 | ||
3606 | mutex_lock(&wl->mutex); | |
3607 | ||
3608 | prev_status = b43_status(dev); | |
3609 | /* Bring the device down... */ | |
3610 | if (prev_status >= B43_STAT_STARTED) | |
3611 | b43_wireless_core_stop(dev); | |
3612 | if (prev_status >= B43_STAT_INITIALIZED) | |
3613 | b43_wireless_core_exit(dev); | |
3614 | ||
3615 | /* ...and up again. */ | |
3616 | if (prev_status >= B43_STAT_INITIALIZED) { | |
3617 | err = b43_wireless_core_init(dev); | |
3618 | if (err) | |
3619 | goto out; | |
3620 | } | |
3621 | if (prev_status >= B43_STAT_STARTED) { | |
3622 | err = b43_wireless_core_start(dev); | |
3623 | if (err) { | |
3624 | b43_wireless_core_exit(dev); | |
3625 | goto out; | |
3626 | } | |
3627 | } | |
3628 | out: | |
3629 | mutex_unlock(&wl->mutex); | |
3630 | if (err) | |
3631 | b43err(wl, "Controller restart FAILED\n"); | |
3632 | else | |
3633 | b43info(wl, "Controller restarted\n"); | |
3634 | } | |
3635 | ||
3636 | static int b43_setup_modes(struct b43_wldev *dev, | |
3637 | int have_aphy, int have_bphy, int have_gphy) | |
3638 | { | |
3639 | struct ieee80211_hw *hw = dev->wl->hw; | |
3640 | struct ieee80211_hw_mode *mode; | |
3641 | struct b43_phy *phy = &dev->phy; | |
3642 | int cnt = 0; | |
3643 | int err; | |
3644 | ||
3645 | /*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */ | |
3646 | have_aphy = 0; | |
3647 | ||
3648 | phy->possible_phymodes = 0; | |
3649 | for (; 1; cnt++) { | |
3650 | if (have_aphy) { | |
3651 | B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); | |
3652 | mode = &phy->hwmodes[cnt]; | |
3653 | ||
3654 | mode->mode = MODE_IEEE80211A; | |
3655 | mode->num_channels = b43_a_chantable_size; | |
3656 | mode->channels = b43_a_chantable; | |
3657 | mode->num_rates = b43_a_ratetable_size; | |
3658 | mode->rates = b43_a_ratetable; | |
3659 | err = ieee80211_register_hwmode(hw, mode); | |
3660 | if (err) | |
3661 | return err; | |
3662 | ||
3663 | phy->possible_phymodes |= B43_PHYMODE_A; | |
3664 | have_aphy = 0; | |
3665 | continue; | |
3666 | } | |
3667 | if (have_bphy) { | |
3668 | B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); | |
3669 | mode = &phy->hwmodes[cnt]; | |
3670 | ||
3671 | mode->mode = MODE_IEEE80211B; | |
3672 | mode->num_channels = b43_bg_chantable_size; | |
3673 | mode->channels = b43_bg_chantable; | |
3674 | mode->num_rates = b43_b_ratetable_size; | |
3675 | mode->rates = b43_b_ratetable; | |
3676 | err = ieee80211_register_hwmode(hw, mode); | |
3677 | if (err) | |
3678 | return err; | |
3679 | ||
3680 | phy->possible_phymodes |= B43_PHYMODE_B; | |
3681 | have_bphy = 0; | |
3682 | continue; | |
3683 | } | |
3684 | if (have_gphy) { | |
3685 | B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); | |
3686 | mode = &phy->hwmodes[cnt]; | |
3687 | ||
3688 | mode->mode = MODE_IEEE80211G; | |
3689 | mode->num_channels = b43_bg_chantable_size; | |
3690 | mode->channels = b43_bg_chantable; | |
3691 | mode->num_rates = b43_g_ratetable_size; | |
3692 | mode->rates = b43_g_ratetable; | |
3693 | err = ieee80211_register_hwmode(hw, mode); | |
3694 | if (err) | |
3695 | return err; | |
3696 | ||
3697 | phy->possible_phymodes |= B43_PHYMODE_G; | |
3698 | have_gphy = 0; | |
3699 | continue; | |
3700 | } | |
3701 | break; | |
3702 | } | |
3703 | ||
3704 | return 0; | |
3705 | } | |
3706 | ||
3707 | static void b43_wireless_core_detach(struct b43_wldev *dev) | |
3708 | { | |
3709 | /* We release firmware that late to not be required to re-request | |
3710 | * is all the time when we reinit the core. */ | |
3711 | b43_release_firmware(dev); | |
3712 | } | |
3713 | ||
3714 | static int b43_wireless_core_attach(struct b43_wldev *dev) | |
3715 | { | |
3716 | struct b43_wl *wl = dev->wl; | |
3717 | struct ssb_bus *bus = dev->dev->bus; | |
3718 | struct pci_dev *pdev = bus->host_pci; | |
3719 | int err; | |
3720 | int have_aphy = 0, have_bphy = 0, have_gphy = 0; | |
3721 | u32 tmp; | |
3722 | ||
3723 | /* Do NOT do any device initialization here. | |
3724 | * Do it in wireless_core_init() instead. | |
3725 | * This function is for gathering basic information about the HW, only. | |
3726 | * Also some structs may be set up here. But most likely you want to have | |
3727 | * that in core_init(), too. | |
3728 | */ | |
3729 | ||
3730 | err = ssb_bus_powerup(bus, 0); | |
3731 | if (err) { | |
3732 | b43err(wl, "Bus powerup failed\n"); | |
3733 | goto out; | |
3734 | } | |
3735 | /* Get the PHY type. */ | |
3736 | if (dev->dev->id.revision >= 5) { | |
3737 | u32 tmshigh; | |
3738 | ||
3739 | tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); | |
3740 | have_aphy = !!(tmshigh & B43_TMSHIGH_APHY); | |
3741 | have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY); | |
3742 | if (!have_aphy && !have_gphy) | |
3743 | have_bphy = 1; | |
3744 | } else if (dev->dev->id.revision == 4) { | |
3745 | have_gphy = 1; | |
3746 | have_aphy = 1; | |
3747 | } else | |
3748 | have_bphy = 1; | |
3749 | ||
e4d6b795 MB |
3750 | dev->phy.gmode = (have_gphy || have_bphy); |
3751 | tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0; | |
3752 | b43_wireless_core_reset(dev, tmp); | |
3753 | ||
3754 | err = b43_phy_versioning(dev); | |
3755 | if (err) | |
21954c36 | 3756 | goto err_powerdown; |
e4d6b795 MB |
3757 | /* Check if this device supports multiband. */ |
3758 | if (!pdev || | |
3759 | (pdev->device != 0x4312 && | |
3760 | pdev->device != 0x4319 && pdev->device != 0x4324)) { | |
3761 | /* No multiband support. */ | |
3762 | have_aphy = 0; | |
3763 | have_bphy = 0; | |
3764 | have_gphy = 0; | |
3765 | switch (dev->phy.type) { | |
3766 | case B43_PHYTYPE_A: | |
3767 | have_aphy = 1; | |
3768 | break; | |
3769 | case B43_PHYTYPE_B: | |
3770 | have_bphy = 1; | |
3771 | break; | |
3772 | case B43_PHYTYPE_G: | |
3773 | have_gphy = 1; | |
3774 | break; | |
3775 | default: | |
3776 | B43_WARN_ON(1); | |
3777 | } | |
3778 | } | |
3779 | dev->phy.gmode = (have_gphy || have_bphy); | |
3780 | tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0; | |
3781 | b43_wireless_core_reset(dev, tmp); | |
3782 | ||
3783 | err = b43_validate_chipaccess(dev); | |
3784 | if (err) | |
21954c36 | 3785 | goto err_powerdown; |
e4d6b795 MB |
3786 | err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy); |
3787 | if (err) | |
21954c36 | 3788 | goto err_powerdown; |
e4d6b795 MB |
3789 | |
3790 | /* Now set some default "current_dev" */ | |
3791 | if (!wl->current_dev) | |
3792 | wl->current_dev = dev; | |
3793 | INIT_WORK(&dev->restart_work, b43_chip_reset); | |
3794 | ||
8e9f7529 | 3795 | b43_radio_turn_off(dev, 1); |
e4d6b795 MB |
3796 | b43_switch_analog(dev, 0); |
3797 | ssb_device_disable(dev->dev, 0); | |
3798 | ssb_bus_may_powerdown(bus); | |
3799 | ||
3800 | out: | |
3801 | return err; | |
3802 | ||
e4d6b795 MB |
3803 | err_powerdown: |
3804 | ssb_bus_may_powerdown(bus); | |
3805 | return err; | |
3806 | } | |
3807 | ||
3808 | static void b43_one_core_detach(struct ssb_device *dev) | |
3809 | { | |
3810 | struct b43_wldev *wldev; | |
3811 | struct b43_wl *wl; | |
3812 | ||
3813 | wldev = ssb_get_drvdata(dev); | |
3814 | wl = wldev->wl; | |
3815 | cancel_work_sync(&wldev->restart_work); | |
3816 | b43_debugfs_remove_device(wldev); | |
3817 | b43_wireless_core_detach(wldev); | |
3818 | list_del(&wldev->list); | |
3819 | wl->nr_devs--; | |
3820 | ssb_set_drvdata(dev, NULL); | |
3821 | kfree(wldev); | |
3822 | } | |
3823 | ||
3824 | static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl) | |
3825 | { | |
3826 | struct b43_wldev *wldev; | |
3827 | struct pci_dev *pdev; | |
3828 | int err = -ENOMEM; | |
3829 | ||
3830 | if (!list_empty(&wl->devlist)) { | |
3831 | /* We are not the first core on this chip. */ | |
3832 | pdev = dev->bus->host_pci; | |
3833 | /* Only special chips support more than one wireless | |
3834 | * core, although some of the other chips have more than | |
3835 | * one wireless core as well. Check for this and | |
3836 | * bail out early. | |
3837 | */ | |
3838 | if (!pdev || | |
3839 | ((pdev->device != 0x4321) && | |
3840 | (pdev->device != 0x4313) && (pdev->device != 0x431A))) { | |
3841 | b43dbg(wl, "Ignoring unconnected 802.11 core\n"); | |
3842 | return -ENODEV; | |
3843 | } | |
3844 | } | |
3845 | ||
3846 | wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); | |
3847 | if (!wldev) | |
3848 | goto out; | |
3849 | ||
3850 | wldev->dev = dev; | |
3851 | wldev->wl = wl; | |
3852 | b43_set_status(wldev, B43_STAT_UNINIT); | |
3853 | wldev->bad_frames_preempt = modparam_bad_frames_preempt; | |
3854 | tasklet_init(&wldev->isr_tasklet, | |
3855 | (void (*)(unsigned long))b43_interrupt_tasklet, | |
3856 | (unsigned long)wldev); | |
3857 | if (modparam_pio) | |
3858 | wldev->__using_pio = 1; | |
3859 | INIT_LIST_HEAD(&wldev->list); | |
3860 | ||
3861 | err = b43_wireless_core_attach(wldev); | |
3862 | if (err) | |
3863 | goto err_kfree_wldev; | |
3864 | ||
3865 | list_add(&wldev->list, &wl->devlist); | |
3866 | wl->nr_devs++; | |
3867 | ssb_set_drvdata(dev, wldev); | |
3868 | b43_debugfs_add_device(wldev); | |
3869 | ||
3870 | out: | |
3871 | return err; | |
3872 | ||
3873 | err_kfree_wldev: | |
3874 | kfree(wldev); | |
3875 | return err; | |
3876 | } | |
3877 | ||
3878 | static void b43_sprom_fixup(struct ssb_bus *bus) | |
3879 | { | |
3880 | /* boardflags workarounds */ | |
3881 | if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL && | |
3882 | bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74) | |
95de2841 | 3883 | bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST; |
e4d6b795 MB |
3884 | if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && |
3885 | bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40) | |
95de2841 | 3886 | bus->sprom.boardflags_lo |= B43_BFL_PACTRL; |
e4d6b795 MB |
3887 | |
3888 | /* Handle case when gain is not set in sprom */ | |
95de2841 LF |
3889 | if (bus->sprom.antenna_gain_a == 0xFF) |
3890 | bus->sprom.antenna_gain_a = 2; | |
3891 | if (bus->sprom.antenna_gain_bg == 0xFF) | |
3892 | bus->sprom.antenna_gain_bg = 2; | |
e4d6b795 MB |
3893 | |
3894 | /* Convert Antennagain values to Q5.2 */ | |
95de2841 LF |
3895 | bus->sprom.antenna_gain_a <<= 2; |
3896 | bus->sprom.antenna_gain_bg <<= 2; | |
e4d6b795 MB |
3897 | } |
3898 | ||
3899 | static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl) | |
3900 | { | |
3901 | struct ieee80211_hw *hw = wl->hw; | |
3902 | ||
3903 | ssb_set_devtypedata(dev, NULL); | |
3904 | ieee80211_free_hw(hw); | |
3905 | } | |
3906 | ||
3907 | static int b43_wireless_init(struct ssb_device *dev) | |
3908 | { | |
3909 | struct ssb_sprom *sprom = &dev->bus->sprom; | |
3910 | struct ieee80211_hw *hw; | |
3911 | struct b43_wl *wl; | |
3912 | int err = -ENOMEM; | |
3913 | ||
3914 | b43_sprom_fixup(dev->bus); | |
3915 | ||
3916 | hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops); | |
3917 | if (!hw) { | |
3918 | b43err(NULL, "Could not allocate ieee80211 device\n"); | |
3919 | goto out; | |
3920 | } | |
3921 | ||
3922 | /* fill hw info */ | |
d8be11ee JB |
3923 | hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE | |
3924 | IEEE80211_HW_RX_INCLUDES_FCS; | |
e4d6b795 MB |
3925 | hw->max_signal = 100; |
3926 | hw->max_rssi = -110; | |
3927 | hw->max_noise = -110; | |
3928 | hw->queues = 1; /* FIXME: hardware has more queues */ | |
3929 | SET_IEEE80211_DEV(hw, dev->dev); | |
95de2841 LF |
3930 | if (is_valid_ether_addr(sprom->et1mac)) |
3931 | SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); | |
e4d6b795 | 3932 | else |
95de2841 | 3933 | SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); |
e4d6b795 MB |
3934 | |
3935 | /* Get and initialize struct b43_wl */ | |
3936 | wl = hw_to_b43_wl(hw); | |
3937 | memset(wl, 0, sizeof(*wl)); | |
3938 | wl->hw = hw; | |
3939 | spin_lock_init(&wl->irq_lock); | |
3940 | spin_lock_init(&wl->leds_lock); | |
3941 | mutex_init(&wl->mutex); | |
3942 | INIT_LIST_HEAD(&wl->devlist); | |
3943 | ||
3944 | ssb_set_devtypedata(dev, wl); | |
3945 | b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id); | |
3946 | err = 0; | |
3947 | out: | |
3948 | return err; | |
3949 | } | |
3950 | ||
3951 | static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id) | |
3952 | { | |
3953 | struct b43_wl *wl; | |
3954 | int err; | |
3955 | int first = 0; | |
3956 | ||
3957 | wl = ssb_get_devtypedata(dev); | |
3958 | if (!wl) { | |
3959 | /* Probing the first core. Must setup common struct b43_wl */ | |
3960 | first = 1; | |
3961 | err = b43_wireless_init(dev); | |
3962 | if (err) | |
3963 | goto out; | |
3964 | wl = ssb_get_devtypedata(dev); | |
3965 | B43_WARN_ON(!wl); | |
3966 | } | |
3967 | err = b43_one_core_attach(dev, wl); | |
3968 | if (err) | |
3969 | goto err_wireless_exit; | |
3970 | ||
3971 | if (first) { | |
3972 | err = ieee80211_register_hw(wl->hw); | |
3973 | if (err) | |
3974 | goto err_one_core_detach; | |
3975 | } | |
3976 | ||
3977 | out: | |
3978 | return err; | |
3979 | ||
3980 | err_one_core_detach: | |
3981 | b43_one_core_detach(dev); | |
3982 | err_wireless_exit: | |
3983 | if (first) | |
3984 | b43_wireless_exit(dev, wl); | |
3985 | return err; | |
3986 | } | |
3987 | ||
3988 | static void b43_remove(struct ssb_device *dev) | |
3989 | { | |
3990 | struct b43_wl *wl = ssb_get_devtypedata(dev); | |
3991 | struct b43_wldev *wldev = ssb_get_drvdata(dev); | |
3992 | ||
3993 | B43_WARN_ON(!wl); | |
3994 | if (wl->current_dev == wldev) | |
3995 | ieee80211_unregister_hw(wl->hw); | |
3996 | ||
3997 | b43_one_core_detach(dev); | |
3998 | ||
3999 | if (list_empty(&wl->devlist)) { | |
4000 | /* Last core on the chip unregistered. | |
4001 | * We can destroy common struct b43_wl. | |
4002 | */ | |
4003 | b43_wireless_exit(dev, wl); | |
4004 | } | |
4005 | } | |
4006 | ||
4007 | /* Perform a hardware reset. This can be called from any context. */ | |
4008 | void b43_controller_restart(struct b43_wldev *dev, const char *reason) | |
4009 | { | |
4010 | /* Must avoid requeueing, if we are in shutdown. */ | |
4011 | if (b43_status(dev) < B43_STAT_INITIALIZED) | |
4012 | return; | |
4013 | b43info(dev->wl, "Controller RESET (%s) ...\n", reason); | |
4014 | queue_work(dev->wl->hw->workqueue, &dev->restart_work); | |
4015 | } | |
4016 | ||
4017 | #ifdef CONFIG_PM | |
4018 | ||
4019 | static int b43_suspend(struct ssb_device *dev, pm_message_t state) | |
4020 | { | |
4021 | struct b43_wldev *wldev = ssb_get_drvdata(dev); | |
4022 | struct b43_wl *wl = wldev->wl; | |
4023 | ||
4024 | b43dbg(wl, "Suspending...\n"); | |
4025 | ||
4026 | mutex_lock(&wl->mutex); | |
4027 | wldev->suspend_init_status = b43_status(wldev); | |
4028 | if (wldev->suspend_init_status >= B43_STAT_STARTED) | |
4029 | b43_wireless_core_stop(wldev); | |
4030 | if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) | |
4031 | b43_wireless_core_exit(wldev); | |
4032 | mutex_unlock(&wl->mutex); | |
4033 | ||
4034 | b43dbg(wl, "Device suspended.\n"); | |
4035 | ||
4036 | return 0; | |
4037 | } | |
4038 | ||
4039 | static int b43_resume(struct ssb_device *dev) | |
4040 | { | |
4041 | struct b43_wldev *wldev = ssb_get_drvdata(dev); | |
4042 | struct b43_wl *wl = wldev->wl; | |
4043 | int err = 0; | |
4044 | ||
4045 | b43dbg(wl, "Resuming...\n"); | |
4046 | ||
4047 | mutex_lock(&wl->mutex); | |
4048 | if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) { | |
4049 | err = b43_wireless_core_init(wldev); | |
4050 | if (err) { | |
4051 | b43err(wl, "Resume failed at core init\n"); | |
4052 | goto out; | |
4053 | } | |
4054 | } | |
4055 | if (wldev->suspend_init_status >= B43_STAT_STARTED) { | |
4056 | err = b43_wireless_core_start(wldev); | |
4057 | if (err) { | |
4058 | b43_wireless_core_exit(wldev); | |
4059 | b43err(wl, "Resume failed at core start\n"); | |
4060 | goto out; | |
4061 | } | |
4062 | } | |
4063 | mutex_unlock(&wl->mutex); | |
4064 | ||
4065 | b43dbg(wl, "Device resumed.\n"); | |
4066 | out: | |
4067 | return err; | |
4068 | } | |
4069 | ||
4070 | #else /* CONFIG_PM */ | |
4071 | # define b43_suspend NULL | |
4072 | # define b43_resume NULL | |
4073 | #endif /* CONFIG_PM */ | |
4074 | ||
4075 | static struct ssb_driver b43_ssb_driver = { | |
4076 | .name = KBUILD_MODNAME, | |
4077 | .id_table = b43_ssb_tbl, | |
4078 | .probe = b43_probe, | |
4079 | .remove = b43_remove, | |
4080 | .suspend = b43_suspend, | |
4081 | .resume = b43_resume, | |
4082 | }; | |
4083 | ||
4084 | static int __init b43_init(void) | |
4085 | { | |
4086 | int err; | |
4087 | ||
4088 | b43_debugfs_init(); | |
4089 | err = b43_pcmcia_init(); | |
4090 | if (err) | |
4091 | goto err_dfs_exit; | |
4092 | err = ssb_driver_register(&b43_ssb_driver); | |
4093 | if (err) | |
4094 | goto err_pcmcia_exit; | |
4095 | ||
4096 | return err; | |
4097 | ||
4098 | err_pcmcia_exit: | |
4099 | b43_pcmcia_exit(); | |
4100 | err_dfs_exit: | |
4101 | b43_debugfs_exit(); | |
4102 | return err; | |
4103 | } | |
4104 | ||
4105 | static void __exit b43_exit(void) | |
4106 | { | |
4107 | ssb_driver_unregister(&b43_ssb_driver); | |
4108 | b43_pcmcia_exit(); | |
4109 | b43_debugfs_exit(); | |
4110 | } | |
4111 | ||
4112 | module_init(b43_init) | |
4113 | module_exit(b43_exit) |