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Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
[deliverable/linux.git] / drivers / net / wireless / b43 / main.c
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
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"
52 #include "sysfs.h"
53 #include "lo.h"
54 #include "pcmcia.h"
55
56 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
57 MODULE_AUTHOR("Martin Langer");
58 MODULE_AUTHOR("Stefano Brivio");
59 MODULE_AUTHOR("Michael Buesch");
60 MODULE_LICENSE("GPL");
61
62 extern char *nvram_get(char *name);
63
64 #if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO)
65 static int modparam_pio;
66 module_param_named(pio, modparam_pio, int, 0444);
67 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
68 #elif defined(CONFIG_B43_DMA)
69 # define modparam_pio 0
70 #elif defined(CONFIG_B43_PIO)
71 # define modparam_pio 1
72 #endif
73
74 static int modparam_bad_frames_preempt;
75 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
76 MODULE_PARM_DESC(bad_frames_preempt,
77 "enable(1) / disable(0) Bad Frames Preemption");
78
79 static int modparam_short_retry = B43_DEFAULT_SHORT_RETRY_LIMIT;
80 module_param_named(short_retry, modparam_short_retry, int, 0444);
81 MODULE_PARM_DESC(short_retry, "Short-Retry-Limit (0 - 15)");
82
83 static int modparam_long_retry = B43_DEFAULT_LONG_RETRY_LIMIT;
84 module_param_named(long_retry, modparam_long_retry, int, 0444);
85 MODULE_PARM_DESC(long_retry, "Long-Retry-Limit (0 - 15)");
86
87 static char modparam_fwpostfix[16];
88 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
89 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
90
91 static int modparam_hwpctl;
92 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
93 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
94
95 static int modparam_nohwcrypt;
96 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
97 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
98
99 static const struct ssb_device_id b43_ssb_tbl[] = {
100 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
101 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
102 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
103 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
104 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
105 SSB_DEVTABLE_END
106 };
107
108 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
109
110 /* Channel and ratetables are shared for all devices.
111 * They can't be const, because ieee80211 puts some precalculated
112 * data in there. This data is the same for all devices, so we don't
113 * get concurrency issues */
114 #define RATETAB_ENT(_rateid, _flags) \
115 { \
116 .rate = B43_RATE_TO_BASE100KBPS(_rateid), \
117 .val = (_rateid), \
118 .val2 = (_rateid), \
119 .flags = (_flags), \
120 }
121 static struct ieee80211_rate __b43_ratetable[] = {
122 RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK),
123 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2),
124 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2),
125 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2),
126 RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM),
127 RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM),
128 RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM),
129 RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM),
130 RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM),
131 RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM),
132 RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM),
133 RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM),
134 };
135
136 #define b43_a_ratetable (__b43_ratetable + 4)
137 #define b43_a_ratetable_size 8
138 #define b43_b_ratetable (__b43_ratetable + 0)
139 #define b43_b_ratetable_size 4
140 #define b43_g_ratetable (__b43_ratetable + 0)
141 #define b43_g_ratetable_size 12
142
143 #define CHANTAB_ENT(_chanid, _freq) \
144 { \
145 .chan = (_chanid), \
146 .freq = (_freq), \
147 .val = (_chanid), \
148 .flag = IEEE80211_CHAN_W_SCAN | \
149 IEEE80211_CHAN_W_ACTIVE_SCAN | \
150 IEEE80211_CHAN_W_IBSS, \
151 .power_level = 0xFF, \
152 .antenna_max = 0xFF, \
153 }
154 static struct ieee80211_channel b43_bg_chantable[] = {
155 CHANTAB_ENT(1, 2412),
156 CHANTAB_ENT(2, 2417),
157 CHANTAB_ENT(3, 2422),
158 CHANTAB_ENT(4, 2427),
159 CHANTAB_ENT(5, 2432),
160 CHANTAB_ENT(6, 2437),
161 CHANTAB_ENT(7, 2442),
162 CHANTAB_ENT(8, 2447),
163 CHANTAB_ENT(9, 2452),
164 CHANTAB_ENT(10, 2457),
165 CHANTAB_ENT(11, 2462),
166 CHANTAB_ENT(12, 2467),
167 CHANTAB_ENT(13, 2472),
168 CHANTAB_ENT(14, 2484),
169 };
170
171 #define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable)
172 static struct ieee80211_channel b43_a_chantable[] = {
173 CHANTAB_ENT(36, 5180),
174 CHANTAB_ENT(40, 5200),
175 CHANTAB_ENT(44, 5220),
176 CHANTAB_ENT(48, 5240),
177 CHANTAB_ENT(52, 5260),
178 CHANTAB_ENT(56, 5280),
179 CHANTAB_ENT(60, 5300),
180 CHANTAB_ENT(64, 5320),
181 CHANTAB_ENT(149, 5745),
182 CHANTAB_ENT(153, 5765),
183 CHANTAB_ENT(157, 5785),
184 CHANTAB_ENT(161, 5805),
185 CHANTAB_ENT(165, 5825),
186 };
187
188 #define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable)
189
190 static void b43_wireless_core_exit(struct b43_wldev *dev);
191 static int b43_wireless_core_init(struct b43_wldev *dev);
192 static void b43_wireless_core_stop(struct b43_wldev *dev);
193 static int b43_wireless_core_start(struct b43_wldev *dev);
194
195 static int b43_ratelimit(struct b43_wl *wl)
196 {
197 if (!wl || !wl->current_dev)
198 return 1;
199 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
200 return 1;
201 /* We are up and running.
202 * Ratelimit the messages to avoid DoS over the net. */
203 return net_ratelimit();
204 }
205
206 void b43info(struct b43_wl *wl, const char *fmt, ...)
207 {
208 va_list args;
209
210 if (!b43_ratelimit(wl))
211 return;
212 va_start(args, fmt);
213 printk(KERN_INFO "b43-%s: ",
214 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
215 vprintk(fmt, args);
216 va_end(args);
217 }
218
219 void b43err(struct b43_wl *wl, const char *fmt, ...)
220 {
221 va_list args;
222
223 if (!b43_ratelimit(wl))
224 return;
225 va_start(args, fmt);
226 printk(KERN_ERR "b43-%s ERROR: ",
227 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
228 vprintk(fmt, args);
229 va_end(args);
230 }
231
232 void b43warn(struct b43_wl *wl, const char *fmt, ...)
233 {
234 va_list args;
235
236 if (!b43_ratelimit(wl))
237 return;
238 va_start(args, fmt);
239 printk(KERN_WARNING "b43-%s warning: ",
240 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
241 vprintk(fmt, args);
242 va_end(args);
243 }
244
245 #if B43_DEBUG
246 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
247 {
248 va_list args;
249
250 va_start(args, fmt);
251 printk(KERN_DEBUG "b43-%s debug: ",
252 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
253 vprintk(fmt, args);
254 va_end(args);
255 }
256 #endif /* DEBUG */
257
258 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
259 {
260 u32 macctl;
261
262 B43_WARN_ON(offset % 4 != 0);
263
264 macctl = b43_read32(dev, B43_MMIO_MACCTL);
265 if (macctl & B43_MACCTL_BE)
266 val = swab32(val);
267
268 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
269 mmiowb();
270 b43_write32(dev, B43_MMIO_RAM_DATA, val);
271 }
272
273 static inline
274 void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset)
275 {
276 u32 control;
277
278 /* "offset" is the WORD offset. */
279
280 control = routing;
281 control <<= 16;
282 control |= offset;
283 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
284 }
285
286 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
287 {
288 u32 ret;
289
290 if (routing == B43_SHM_SHARED) {
291 B43_WARN_ON(offset & 0x0001);
292 if (offset & 0x0003) {
293 /* Unaligned access */
294 b43_shm_control_word(dev, routing, offset >> 2);
295 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
296 ret <<= 16;
297 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
298 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
299
300 return ret;
301 }
302 offset >>= 2;
303 }
304 b43_shm_control_word(dev, routing, offset);
305 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
306
307 return ret;
308 }
309
310 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
311 {
312 u16 ret;
313
314 if (routing == B43_SHM_SHARED) {
315 B43_WARN_ON(offset & 0x0001);
316 if (offset & 0x0003) {
317 /* Unaligned access */
318 b43_shm_control_word(dev, routing, offset >> 2);
319 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
320
321 return ret;
322 }
323 offset >>= 2;
324 }
325 b43_shm_control_word(dev, routing, offset);
326 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
327
328 return ret;
329 }
330
331 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
332 {
333 if (routing == B43_SHM_SHARED) {
334 B43_WARN_ON(offset & 0x0001);
335 if (offset & 0x0003) {
336 /* Unaligned access */
337 b43_shm_control_word(dev, routing, offset >> 2);
338 mmiowb();
339 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
340 (value >> 16) & 0xffff);
341 mmiowb();
342 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
343 mmiowb();
344 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
345 return;
346 }
347 offset >>= 2;
348 }
349 b43_shm_control_word(dev, routing, offset);
350 mmiowb();
351 b43_write32(dev, B43_MMIO_SHM_DATA, value);
352 }
353
354 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
355 {
356 if (routing == B43_SHM_SHARED) {
357 B43_WARN_ON(offset & 0x0001);
358 if (offset & 0x0003) {
359 /* Unaligned access */
360 b43_shm_control_word(dev, routing, offset >> 2);
361 mmiowb();
362 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
363 return;
364 }
365 offset >>= 2;
366 }
367 b43_shm_control_word(dev, routing, offset);
368 mmiowb();
369 b43_write16(dev, B43_MMIO_SHM_DATA, value);
370 }
371
372 /* Read HostFlags */
373 u32 b43_hf_read(struct b43_wldev * dev)
374 {
375 u32 ret;
376
377 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
378 ret <<= 16;
379 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
380
381 return ret;
382 }
383
384 /* Write HostFlags */
385 void b43_hf_write(struct b43_wldev *dev, u32 value)
386 {
387 b43_shm_write16(dev, B43_SHM_SHARED,
388 B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
389 b43_shm_write16(dev, B43_SHM_SHARED,
390 B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
391 }
392
393 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
394 {
395 /* We need to be careful. As we read the TSF from multiple
396 * registers, we should take care of register overflows.
397 * In theory, the whole tsf read process should be atomic.
398 * We try to be atomic here, by restaring the read process,
399 * if any of the high registers changed (overflew).
400 */
401 if (dev->dev->id.revision >= 3) {
402 u32 low, high, high2;
403
404 do {
405 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
406 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
407 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
408 } while (unlikely(high != high2));
409
410 *tsf = high;
411 *tsf <<= 32;
412 *tsf |= low;
413 } else {
414 u64 tmp;
415 u16 v0, v1, v2, v3;
416 u16 test1, test2, test3;
417
418 do {
419 v3 = b43_read16(dev, B43_MMIO_TSF_3);
420 v2 = b43_read16(dev, B43_MMIO_TSF_2);
421 v1 = b43_read16(dev, B43_MMIO_TSF_1);
422 v0 = b43_read16(dev, B43_MMIO_TSF_0);
423
424 test3 = b43_read16(dev, B43_MMIO_TSF_3);
425 test2 = b43_read16(dev, B43_MMIO_TSF_2);
426 test1 = b43_read16(dev, B43_MMIO_TSF_1);
427 } while (v3 != test3 || v2 != test2 || v1 != test1);
428
429 *tsf = v3;
430 *tsf <<= 48;
431 tmp = v2;
432 tmp <<= 32;
433 *tsf |= tmp;
434 tmp = v1;
435 tmp <<= 16;
436 *tsf |= tmp;
437 *tsf |= v0;
438 }
439 }
440
441 static void b43_time_lock(struct b43_wldev *dev)
442 {
443 u32 macctl;
444
445 macctl = b43_read32(dev, B43_MMIO_MACCTL);
446 macctl |= B43_MACCTL_TBTTHOLD;
447 b43_write32(dev, B43_MMIO_MACCTL, macctl);
448 /* Commit the write */
449 b43_read32(dev, B43_MMIO_MACCTL);
450 }
451
452 static void b43_time_unlock(struct b43_wldev *dev)
453 {
454 u32 macctl;
455
456 macctl = b43_read32(dev, B43_MMIO_MACCTL);
457 macctl &= ~B43_MACCTL_TBTTHOLD;
458 b43_write32(dev, B43_MMIO_MACCTL, macctl);
459 /* Commit the write */
460 b43_read32(dev, B43_MMIO_MACCTL);
461 }
462
463 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
464 {
465 /* Be careful with the in-progress timer.
466 * First zero out the low register, so we have a full
467 * register-overflow duration to complete the operation.
468 */
469 if (dev->dev->id.revision >= 3) {
470 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
471 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
472
473 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
474 mmiowb();
475 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
476 mmiowb();
477 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
478 } else {
479 u16 v0 = (tsf & 0x000000000000FFFFULL);
480 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
481 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
482 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
483
484 b43_write16(dev, B43_MMIO_TSF_0, 0);
485 mmiowb();
486 b43_write16(dev, B43_MMIO_TSF_3, v3);
487 mmiowb();
488 b43_write16(dev, B43_MMIO_TSF_2, v2);
489 mmiowb();
490 b43_write16(dev, B43_MMIO_TSF_1, v1);
491 mmiowb();
492 b43_write16(dev, B43_MMIO_TSF_0, v0);
493 }
494 }
495
496 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
497 {
498 b43_time_lock(dev);
499 b43_tsf_write_locked(dev, tsf);
500 b43_time_unlock(dev);
501 }
502
503 static
504 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
505 {
506 static const u8 zero_addr[ETH_ALEN] = { 0 };
507 u16 data;
508
509 if (!mac)
510 mac = zero_addr;
511
512 offset |= 0x0020;
513 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
514
515 data = mac[0];
516 data |= mac[1] << 8;
517 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
518 data = mac[2];
519 data |= mac[3] << 8;
520 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
521 data = mac[4];
522 data |= mac[5] << 8;
523 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
524 }
525
526 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
527 {
528 const u8 *mac;
529 const u8 *bssid;
530 u8 mac_bssid[ETH_ALEN * 2];
531 int i;
532 u32 tmp;
533
534 bssid = dev->wl->bssid;
535 mac = dev->wl->mac_addr;
536
537 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
538
539 memcpy(mac_bssid, mac, ETH_ALEN);
540 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
541
542 /* Write our MAC address and BSSID to template ram */
543 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
544 tmp = (u32) (mac_bssid[i + 0]);
545 tmp |= (u32) (mac_bssid[i + 1]) << 8;
546 tmp |= (u32) (mac_bssid[i + 2]) << 16;
547 tmp |= (u32) (mac_bssid[i + 3]) << 24;
548 b43_ram_write(dev, 0x20 + i, tmp);
549 }
550 }
551
552 static void b43_upload_card_macaddress(struct b43_wldev *dev)
553 {
554 b43_write_mac_bssid_templates(dev);
555 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
556 }
557
558 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
559 {
560 /* slot_time is in usec. */
561 if (dev->phy.type != B43_PHYTYPE_G)
562 return;
563 b43_write16(dev, 0x684, 510 + slot_time);
564 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
565 }
566
567 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
568 {
569 b43_set_slot_time(dev, 9);
570 dev->short_slot = 1;
571 }
572
573 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
574 {
575 b43_set_slot_time(dev, 20);
576 dev->short_slot = 0;
577 }
578
579 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
580 * Returns the _previously_ enabled IRQ mask.
581 */
582 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
583 {
584 u32 old_mask;
585
586 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
587 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
588
589 return old_mask;
590 }
591
592 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
593 * Returns the _previously_ enabled IRQ mask.
594 */
595 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
596 {
597 u32 old_mask;
598
599 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
600 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
601
602 return old_mask;
603 }
604
605 /* Synchronize IRQ top- and bottom-half.
606 * IRQs must be masked before calling this.
607 * This must not be called with the irq_lock held.
608 */
609 static void b43_synchronize_irq(struct b43_wldev *dev)
610 {
611 synchronize_irq(dev->dev->irq);
612 tasklet_kill(&dev->isr_tasklet);
613 }
614
615 /* DummyTransmission function, as documented on
616 * http://bcm-specs.sipsolutions.net/DummyTransmission
617 */
618 void b43_dummy_transmission(struct b43_wldev *dev)
619 {
620 struct b43_phy *phy = &dev->phy;
621 unsigned int i, max_loop;
622 u16 value;
623 u32 buffer[5] = {
624 0x00000000,
625 0x00D40000,
626 0x00000000,
627 0x01000000,
628 0x00000000,
629 };
630
631 switch (phy->type) {
632 case B43_PHYTYPE_A:
633 max_loop = 0x1E;
634 buffer[0] = 0x000201CC;
635 break;
636 case B43_PHYTYPE_B:
637 case B43_PHYTYPE_G:
638 max_loop = 0xFA;
639 buffer[0] = 0x000B846E;
640 break;
641 default:
642 B43_WARN_ON(1);
643 return;
644 }
645
646 for (i = 0; i < 5; i++)
647 b43_ram_write(dev, i * 4, buffer[i]);
648
649 /* Commit writes */
650 b43_read32(dev, B43_MMIO_MACCTL);
651
652 b43_write16(dev, 0x0568, 0x0000);
653 b43_write16(dev, 0x07C0, 0x0000);
654 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
655 b43_write16(dev, 0x050C, value);
656 b43_write16(dev, 0x0508, 0x0000);
657 b43_write16(dev, 0x050A, 0x0000);
658 b43_write16(dev, 0x054C, 0x0000);
659 b43_write16(dev, 0x056A, 0x0014);
660 b43_write16(dev, 0x0568, 0x0826);
661 b43_write16(dev, 0x0500, 0x0000);
662 b43_write16(dev, 0x0502, 0x0030);
663
664 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
665 b43_radio_write16(dev, 0x0051, 0x0017);
666 for (i = 0x00; i < max_loop; i++) {
667 value = b43_read16(dev, 0x050E);
668 if (value & 0x0080)
669 break;
670 udelay(10);
671 }
672 for (i = 0x00; i < 0x0A; i++) {
673 value = b43_read16(dev, 0x050E);
674 if (value & 0x0400)
675 break;
676 udelay(10);
677 }
678 for (i = 0x00; i < 0x0A; i++) {
679 value = b43_read16(dev, 0x0690);
680 if (!(value & 0x0100))
681 break;
682 udelay(10);
683 }
684 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
685 b43_radio_write16(dev, 0x0051, 0x0037);
686 }
687
688 static void key_write(struct b43_wldev *dev,
689 u8 index, u8 algorithm, const u8 * key)
690 {
691 unsigned int i;
692 u32 offset;
693 u16 value;
694 u16 kidx;
695
696 /* Key index/algo block */
697 kidx = b43_kidx_to_fw(dev, index);
698 value = ((kidx << 4) | algorithm);
699 b43_shm_write16(dev, B43_SHM_SHARED,
700 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
701
702 /* Write the key to the Key Table Pointer offset */
703 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
704 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
705 value = key[i];
706 value |= (u16) (key[i + 1]) << 8;
707 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
708 }
709 }
710
711 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
712 {
713 u32 addrtmp[2] = { 0, 0, };
714 u8 per_sta_keys_start = 8;
715
716 if (b43_new_kidx_api(dev))
717 per_sta_keys_start = 4;
718
719 B43_WARN_ON(index < per_sta_keys_start);
720 /* We have two default TX keys and possibly two default RX keys.
721 * Physical mac 0 is mapped to physical key 4 or 8, depending
722 * on the firmware version.
723 * So we must adjust the index here.
724 */
725 index -= per_sta_keys_start;
726
727 if (addr) {
728 addrtmp[0] = addr[0];
729 addrtmp[0] |= ((u32) (addr[1]) << 8);
730 addrtmp[0] |= ((u32) (addr[2]) << 16);
731 addrtmp[0] |= ((u32) (addr[3]) << 24);
732 addrtmp[1] = addr[4];
733 addrtmp[1] |= ((u32) (addr[5]) << 8);
734 }
735
736 if (dev->dev->id.revision >= 5) {
737 /* Receive match transmitter address mechanism */
738 b43_shm_write32(dev, B43_SHM_RCMTA,
739 (index * 2) + 0, addrtmp[0]);
740 b43_shm_write16(dev, B43_SHM_RCMTA,
741 (index * 2) + 1, addrtmp[1]);
742 } else {
743 /* RXE (Receive Engine) and
744 * PSM (Programmable State Machine) mechanism
745 */
746 if (index < 8) {
747 /* TODO write to RCM 16, 19, 22 and 25 */
748 } else {
749 b43_shm_write32(dev, B43_SHM_SHARED,
750 B43_SHM_SH_PSM + (index * 6) + 0,
751 addrtmp[0]);
752 b43_shm_write16(dev, B43_SHM_SHARED,
753 B43_SHM_SH_PSM + (index * 6) + 4,
754 addrtmp[1]);
755 }
756 }
757 }
758
759 static void do_key_write(struct b43_wldev *dev,
760 u8 index, u8 algorithm,
761 const u8 * key, size_t key_len, const u8 * mac_addr)
762 {
763 u8 buf[B43_SEC_KEYSIZE] = { 0, };
764 u8 per_sta_keys_start = 8;
765
766 if (b43_new_kidx_api(dev))
767 per_sta_keys_start = 4;
768
769 B43_WARN_ON(index >= dev->max_nr_keys);
770 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
771
772 if (index >= per_sta_keys_start)
773 keymac_write(dev, index, NULL); /* First zero out mac. */
774 if (key)
775 memcpy(buf, key, key_len);
776 key_write(dev, index, algorithm, buf);
777 if (index >= per_sta_keys_start)
778 keymac_write(dev, index, mac_addr);
779
780 dev->key[index].algorithm = algorithm;
781 }
782
783 static int b43_key_write(struct b43_wldev *dev,
784 int index, u8 algorithm,
785 const u8 * key, size_t key_len,
786 const u8 * mac_addr,
787 struct ieee80211_key_conf *keyconf)
788 {
789 int i;
790 int sta_keys_start;
791
792 if (key_len > B43_SEC_KEYSIZE)
793 return -EINVAL;
794 for (i = 0; i < dev->max_nr_keys; i++) {
795 /* Check that we don't already have this key. */
796 B43_WARN_ON(dev->key[i].keyconf == keyconf);
797 }
798 if (index < 0) {
799 /* Either pairwise key or address is 00:00:00:00:00:00
800 * for transmit-only keys. Search the index. */
801 if (b43_new_kidx_api(dev))
802 sta_keys_start = 4;
803 else
804 sta_keys_start = 8;
805 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
806 if (!dev->key[i].keyconf) {
807 /* found empty */
808 index = i;
809 break;
810 }
811 }
812 if (index < 0) {
813 b43err(dev->wl, "Out of hardware key memory\n");
814 return -ENOSPC;
815 }
816 } else
817 B43_WARN_ON(index > 3);
818
819 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
820 if ((index <= 3) && !b43_new_kidx_api(dev)) {
821 /* Default RX key */
822 B43_WARN_ON(mac_addr);
823 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
824 }
825 keyconf->hw_key_idx = index;
826 dev->key[index].keyconf = keyconf;
827
828 return 0;
829 }
830
831 static int b43_key_clear(struct b43_wldev *dev, int index)
832 {
833 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
834 return -EINVAL;
835 do_key_write(dev, index, B43_SEC_ALGO_NONE,
836 NULL, B43_SEC_KEYSIZE, NULL);
837 if ((index <= 3) && !b43_new_kidx_api(dev)) {
838 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
839 NULL, B43_SEC_KEYSIZE, NULL);
840 }
841 dev->key[index].keyconf = NULL;
842
843 return 0;
844 }
845
846 static void b43_clear_keys(struct b43_wldev *dev)
847 {
848 int i;
849
850 for (i = 0; i < dev->max_nr_keys; i++)
851 b43_key_clear(dev, i);
852 }
853
854 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
855 {
856 u32 macctl;
857 u16 ucstat;
858 bool hwps;
859 bool awake;
860 int i;
861
862 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
863 (ps_flags & B43_PS_DISABLED));
864 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
865
866 if (ps_flags & B43_PS_ENABLED) {
867 hwps = 1;
868 } else if (ps_flags & B43_PS_DISABLED) {
869 hwps = 0;
870 } else {
871 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
872 // and thus is not an AP and we are associated, set bit 25
873 }
874 if (ps_flags & B43_PS_AWAKE) {
875 awake = 1;
876 } else if (ps_flags & B43_PS_ASLEEP) {
877 awake = 0;
878 } else {
879 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
880 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
881 // successful, set bit26
882 }
883
884 /* FIXME: For now we force awake-on and hwps-off */
885 hwps = 0;
886 awake = 1;
887
888 macctl = b43_read32(dev, B43_MMIO_MACCTL);
889 if (hwps)
890 macctl |= B43_MACCTL_HWPS;
891 else
892 macctl &= ~B43_MACCTL_HWPS;
893 if (awake)
894 macctl |= B43_MACCTL_AWAKE;
895 else
896 macctl &= ~B43_MACCTL_AWAKE;
897 b43_write32(dev, B43_MMIO_MACCTL, macctl);
898 /* Commit write */
899 b43_read32(dev, B43_MMIO_MACCTL);
900 if (awake && dev->dev->id.revision >= 5) {
901 /* Wait for the microcode to wake up. */
902 for (i = 0; i < 100; i++) {
903 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
904 B43_SHM_SH_UCODESTAT);
905 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
906 break;
907 udelay(10);
908 }
909 }
910 }
911
912 /* Turn the Analog ON/OFF */
913 static void b43_switch_analog(struct b43_wldev *dev, int on)
914 {
915 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
916 }
917
918 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
919 {
920 u32 tmslow;
921 u32 macctl;
922
923 flags |= B43_TMSLOW_PHYCLKEN;
924 flags |= B43_TMSLOW_PHYRESET;
925 ssb_device_enable(dev->dev, flags);
926 msleep(2); /* Wait for the PLL to turn on. */
927
928 /* Now take the PHY out of Reset again */
929 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
930 tmslow |= SSB_TMSLOW_FGC;
931 tmslow &= ~B43_TMSLOW_PHYRESET;
932 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
933 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
934 msleep(1);
935 tmslow &= ~SSB_TMSLOW_FGC;
936 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
937 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
938 msleep(1);
939
940 /* Turn Analog ON */
941 b43_switch_analog(dev, 1);
942
943 macctl = b43_read32(dev, B43_MMIO_MACCTL);
944 macctl &= ~B43_MACCTL_GMODE;
945 if (flags & B43_TMSLOW_GMODE)
946 macctl |= B43_MACCTL_GMODE;
947 macctl |= B43_MACCTL_IHR_ENABLED;
948 b43_write32(dev, B43_MMIO_MACCTL, macctl);
949 }
950
951 static void handle_irq_transmit_status(struct b43_wldev *dev)
952 {
953 u32 v0, v1;
954 u16 tmp;
955 struct b43_txstatus stat;
956
957 while (1) {
958 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
959 if (!(v0 & 0x00000001))
960 break;
961 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
962
963 stat.cookie = (v0 >> 16);
964 stat.seq = (v1 & 0x0000FFFF);
965 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
966 tmp = (v0 & 0x0000FFFF);
967 stat.frame_count = ((tmp & 0xF000) >> 12);
968 stat.rts_count = ((tmp & 0x0F00) >> 8);
969 stat.supp_reason = ((tmp & 0x001C) >> 2);
970 stat.pm_indicated = !!(tmp & 0x0080);
971 stat.intermediate = !!(tmp & 0x0040);
972 stat.for_ampdu = !!(tmp & 0x0020);
973 stat.acked = !!(tmp & 0x0002);
974
975 b43_handle_txstatus(dev, &stat);
976 }
977 }
978
979 static void drain_txstatus_queue(struct b43_wldev *dev)
980 {
981 u32 dummy;
982
983 if (dev->dev->id.revision < 5)
984 return;
985 /* Read all entries from the microcode TXstatus FIFO
986 * and throw them away.
987 */
988 while (1) {
989 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
990 if (!(dummy & 0x00000001))
991 break;
992 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
993 }
994 }
995
996 static u32 b43_jssi_read(struct b43_wldev *dev)
997 {
998 u32 val = 0;
999
1000 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1001 val <<= 16;
1002 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1003
1004 return val;
1005 }
1006
1007 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1008 {
1009 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1010 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1011 }
1012
1013 static void b43_generate_noise_sample(struct b43_wldev *dev)
1014 {
1015 b43_jssi_write(dev, 0x7F7F7F7F);
1016 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1017 b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1018 | (1 << 4));
1019 B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1020 }
1021
1022 static void b43_calculate_link_quality(struct b43_wldev *dev)
1023 {
1024 /* Top half of Link Quality calculation. */
1025
1026 if (dev->noisecalc.calculation_running)
1027 return;
1028 dev->noisecalc.channel_at_start = dev->phy.channel;
1029 dev->noisecalc.calculation_running = 1;
1030 dev->noisecalc.nr_samples = 0;
1031
1032 b43_generate_noise_sample(dev);
1033 }
1034
1035 static void handle_irq_noise(struct b43_wldev *dev)
1036 {
1037 struct b43_phy *phy = &dev->phy;
1038 u16 tmp;
1039 u8 noise[4];
1040 u8 i, j;
1041 s32 average;
1042
1043 /* Bottom half of Link Quality calculation. */
1044
1045 B43_WARN_ON(!dev->noisecalc.calculation_running);
1046 if (dev->noisecalc.channel_at_start != phy->channel)
1047 goto drop_calculation;
1048 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1049 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1050 noise[2] == 0x7F || noise[3] == 0x7F)
1051 goto generate_new;
1052
1053 /* Get the noise samples. */
1054 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1055 i = dev->noisecalc.nr_samples;
1056 noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1057 noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1058 noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1059 noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1060 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1061 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1062 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1063 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1064 dev->noisecalc.nr_samples++;
1065 if (dev->noisecalc.nr_samples == 8) {
1066 /* Calculate the Link Quality by the noise samples. */
1067 average = 0;
1068 for (i = 0; i < 8; i++) {
1069 for (j = 0; j < 4; j++)
1070 average += dev->noisecalc.samples[i][j];
1071 }
1072 average /= (8 * 4);
1073 average *= 125;
1074 average += 64;
1075 average /= 128;
1076 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1077 tmp = (tmp / 128) & 0x1F;
1078 if (tmp >= 8)
1079 average += 2;
1080 else
1081 average -= 25;
1082 if (tmp == 8)
1083 average -= 72;
1084 else
1085 average -= 48;
1086
1087 dev->stats.link_noise = average;
1088 drop_calculation:
1089 dev->noisecalc.calculation_running = 0;
1090 return;
1091 }
1092 generate_new:
1093 b43_generate_noise_sample(dev);
1094 }
1095
1096 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1097 {
1098 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1099 ///TODO: PS TBTT
1100 } else {
1101 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1102 b43_power_saving_ctl_bits(dev, 0);
1103 }
1104 dev->reg124_set_0x4 = 0;
1105 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1106 dev->reg124_set_0x4 = 1;
1107 }
1108
1109 static void handle_irq_atim_end(struct b43_wldev *dev)
1110 {
1111 if (!dev->reg124_set_0x4 /*FIXME rename this variable */ )
1112 return;
1113 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1114 b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1115 | 0x4);
1116 }
1117
1118 static void handle_irq_pmq(struct b43_wldev *dev)
1119 {
1120 u32 tmp;
1121
1122 //TODO: AP mode.
1123
1124 while (1) {
1125 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1126 if (!(tmp & 0x00000008))
1127 break;
1128 }
1129 /* 16bit write is odd, but correct. */
1130 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1131 }
1132
1133 static void b43_write_template_common(struct b43_wldev *dev,
1134 const u8 * data, u16 size,
1135 u16 ram_offset,
1136 u16 shm_size_offset, u8 rate)
1137 {
1138 u32 i, tmp;
1139 struct b43_plcp_hdr4 plcp;
1140
1141 plcp.data = 0;
1142 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1143 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1144 ram_offset += sizeof(u32);
1145 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1146 * So leave the first two bytes of the next write blank.
1147 */
1148 tmp = (u32) (data[0]) << 16;
1149 tmp |= (u32) (data[1]) << 24;
1150 b43_ram_write(dev, ram_offset, tmp);
1151 ram_offset += sizeof(u32);
1152 for (i = 2; i < size; i += sizeof(u32)) {
1153 tmp = (u32) (data[i + 0]);
1154 if (i + 1 < size)
1155 tmp |= (u32) (data[i + 1]) << 8;
1156 if (i + 2 < size)
1157 tmp |= (u32) (data[i + 2]) << 16;
1158 if (i + 3 < size)
1159 tmp |= (u32) (data[i + 3]) << 24;
1160 b43_ram_write(dev, ram_offset + i - 2, tmp);
1161 }
1162 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1163 size + sizeof(struct b43_plcp_hdr6));
1164 }
1165
1166 static void b43_write_beacon_template(struct b43_wldev *dev,
1167 u16 ram_offset,
1168 u16 shm_size_offset, u8 rate)
1169 {
1170 int len;
1171 const u8 *data;
1172
1173 B43_WARN_ON(!dev->cached_beacon);
1174 len = min((size_t) dev->cached_beacon->len,
1175 0x200 - sizeof(struct b43_plcp_hdr6));
1176 data = (const u8 *)(dev->cached_beacon->data);
1177 b43_write_template_common(dev, data,
1178 len, ram_offset, shm_size_offset, rate);
1179 }
1180
1181 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1182 u16 shm_offset, u16 size, u8 rate)
1183 {
1184 struct b43_plcp_hdr4 plcp;
1185 u32 tmp;
1186 __le16 dur;
1187
1188 plcp.data = 0;
1189 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1190 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1191 dev->wl->if_id, size,
1192 B43_RATE_TO_BASE100KBPS(rate));
1193 /* Write PLCP in two parts and timing for packet transfer */
1194 tmp = le32_to_cpu(plcp.data);
1195 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1196 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1197 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1198 }
1199
1200 /* Instead of using custom probe response template, this function
1201 * just patches custom beacon template by:
1202 * 1) Changing packet type
1203 * 2) Patching duration field
1204 * 3) Stripping TIM
1205 */
1206 static u8 *b43_generate_probe_resp(struct b43_wldev *dev,
1207 u16 * dest_size, u8 rate)
1208 {
1209 const u8 *src_data;
1210 u8 *dest_data;
1211 u16 src_size, elem_size, src_pos, dest_pos;
1212 __le16 dur;
1213 struct ieee80211_hdr *hdr;
1214
1215 B43_WARN_ON(!dev->cached_beacon);
1216 src_size = dev->cached_beacon->len;
1217 src_data = (const u8 *)dev->cached_beacon->data;
1218
1219 if (unlikely(src_size < 0x24)) {
1220 b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n");
1221 return NULL;
1222 }
1223
1224 dest_data = kmalloc(src_size, GFP_ATOMIC);
1225 if (unlikely(!dest_data))
1226 return NULL;
1227
1228 /* 0x24 is offset of first variable-len Information-Element
1229 * in beacon frame.
1230 */
1231 memcpy(dest_data, src_data, 0x24);
1232 src_pos = dest_pos = 0x24;
1233 for (; src_pos < src_size - 2; src_pos += elem_size) {
1234 elem_size = src_data[src_pos + 1] + 2;
1235 if (src_data[src_pos] != 0x05) { /* TIM */
1236 memcpy(dest_data + dest_pos, src_data + src_pos,
1237 elem_size);
1238 dest_pos += elem_size;
1239 }
1240 }
1241 *dest_size = dest_pos;
1242 hdr = (struct ieee80211_hdr *)dest_data;
1243
1244 /* Set the frame control. */
1245 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1246 IEEE80211_STYPE_PROBE_RESP);
1247 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1248 dev->wl->if_id, *dest_size,
1249 B43_RATE_TO_BASE100KBPS(rate));
1250 hdr->duration_id = dur;
1251
1252 return dest_data;
1253 }
1254
1255 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1256 u16 ram_offset,
1257 u16 shm_size_offset, u8 rate)
1258 {
1259 u8 *probe_resp_data;
1260 u16 size;
1261
1262 B43_WARN_ON(!dev->cached_beacon);
1263 size = dev->cached_beacon->len;
1264 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1265 if (unlikely(!probe_resp_data))
1266 return;
1267
1268 /* Looks like PLCP headers plus packet timings are stored for
1269 * all possible basic rates
1270 */
1271 b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB);
1272 b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB);
1273 b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB);
1274 b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB);
1275
1276 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1277 b43_write_template_common(dev, probe_resp_data,
1278 size, ram_offset, shm_size_offset, rate);
1279 kfree(probe_resp_data);
1280 }
1281
1282 static int b43_refresh_cached_beacon(struct b43_wldev *dev,
1283 struct sk_buff *beacon)
1284 {
1285 if (dev->cached_beacon)
1286 kfree_skb(dev->cached_beacon);
1287 dev->cached_beacon = beacon;
1288
1289 return 0;
1290 }
1291
1292 static void b43_update_templates(struct b43_wldev *dev)
1293 {
1294 u32 status;
1295
1296 B43_WARN_ON(!dev->cached_beacon);
1297
1298 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1299 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1300 b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB);
1301
1302 status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1303 status |= 0x03;
1304 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1305 }
1306
1307 static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon)
1308 {
1309 int err;
1310
1311 err = b43_refresh_cached_beacon(dev, beacon);
1312 if (unlikely(err))
1313 return;
1314 b43_update_templates(dev);
1315 }
1316
1317 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1318 {
1319 u32 tmp;
1320 u16 i, len;
1321
1322 len = min((u16) ssid_len, (u16) 0x100);
1323 for (i = 0; i < len; i += sizeof(u32)) {
1324 tmp = (u32) (ssid[i + 0]);
1325 if (i + 1 < len)
1326 tmp |= (u32) (ssid[i + 1]) << 8;
1327 if (i + 2 < len)
1328 tmp |= (u32) (ssid[i + 2]) << 16;
1329 if (i + 3 < len)
1330 tmp |= (u32) (ssid[i + 3]) << 24;
1331 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1332 }
1333 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1334 }
1335
1336 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1337 {
1338 b43_time_lock(dev);
1339 if (dev->dev->id.revision >= 3) {
1340 b43_write32(dev, 0x188, (beacon_int << 16));
1341 } else {
1342 b43_write16(dev, 0x606, (beacon_int >> 6));
1343 b43_write16(dev, 0x610, beacon_int);
1344 }
1345 b43_time_unlock(dev);
1346 }
1347
1348 static void handle_irq_beacon(struct b43_wldev *dev)
1349 {
1350 u32 status;
1351
1352 if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP))
1353 return;
1354
1355 dev->irq_savedstate &= ~B43_IRQ_BEACON;
1356 status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1357
1358 if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) {
1359 /* ACK beacon IRQ. */
1360 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1361 dev->irq_savedstate |= B43_IRQ_BEACON;
1362 if (dev->cached_beacon)
1363 kfree_skb(dev->cached_beacon);
1364 dev->cached_beacon = NULL;
1365 return;
1366 }
1367 if (!(status & 0x1)) {
1368 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1369 status |= 0x1;
1370 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1371 }
1372 if (!(status & 0x2)) {
1373 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1374 status |= 0x2;
1375 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1376 }
1377 }
1378
1379 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1380 {
1381 //TODO
1382 }
1383
1384 /* Interrupt handler bottom-half */
1385 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1386 {
1387 u32 reason;
1388 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1389 u32 merged_dma_reason = 0;
1390 int i;
1391 unsigned long flags;
1392
1393 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1394
1395 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1396
1397 reason = dev->irq_reason;
1398 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1399 dma_reason[i] = dev->dma_reason[i];
1400 merged_dma_reason |= dma_reason[i];
1401 }
1402
1403 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1404 b43err(dev->wl, "MAC transmission error\n");
1405
1406 if (unlikely(reason & B43_IRQ_PHY_TXERR))
1407 b43err(dev->wl, "PHY transmission error\n");
1408
1409 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1410 B43_DMAIRQ_NONFATALMASK))) {
1411 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1412 b43err(dev->wl, "Fatal DMA error: "
1413 "0x%08X, 0x%08X, 0x%08X, "
1414 "0x%08X, 0x%08X, 0x%08X\n",
1415 dma_reason[0], dma_reason[1],
1416 dma_reason[2], dma_reason[3],
1417 dma_reason[4], dma_reason[5]);
1418 b43_controller_restart(dev, "DMA error");
1419 mmiowb();
1420 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1421 return;
1422 }
1423 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1424 b43err(dev->wl, "DMA error: "
1425 "0x%08X, 0x%08X, 0x%08X, "
1426 "0x%08X, 0x%08X, 0x%08X\n",
1427 dma_reason[0], dma_reason[1],
1428 dma_reason[2], dma_reason[3],
1429 dma_reason[4], dma_reason[5]);
1430 }
1431 }
1432
1433 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1434 handle_irq_ucode_debug(dev);
1435 if (reason & B43_IRQ_TBTT_INDI)
1436 handle_irq_tbtt_indication(dev);
1437 if (reason & B43_IRQ_ATIM_END)
1438 handle_irq_atim_end(dev);
1439 if (reason & B43_IRQ_BEACON)
1440 handle_irq_beacon(dev);
1441 if (reason & B43_IRQ_PMQ)
1442 handle_irq_pmq(dev);
1443 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1444 ;/* TODO */
1445 if (reason & B43_IRQ_NOISESAMPLE_OK)
1446 handle_irq_noise(dev);
1447
1448 /* Check the DMA reason registers for received data. */
1449 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1450 if (b43_using_pio(dev))
1451 b43_pio_rx(dev->pio.queue0);
1452 else
1453 b43_dma_rx(dev->dma.rx_ring0);
1454 }
1455 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1456 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1457 if (dma_reason[3] & B43_DMAIRQ_RX_DONE) {
1458 if (b43_using_pio(dev))
1459 b43_pio_rx(dev->pio.queue3);
1460 else
1461 b43_dma_rx(dev->dma.rx_ring3);
1462 }
1463 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1464 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1465
1466 if (reason & B43_IRQ_TX_OK)
1467 handle_irq_transmit_status(dev);
1468
1469 b43_interrupt_enable(dev, dev->irq_savedstate);
1470 mmiowb();
1471 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1472 }
1473
1474 static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx)
1475 {
1476 u16 rxctl;
1477
1478 rxctl = b43_read16(dev, base + B43_PIO_RXCTL);
1479 if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE)
1480 dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE;
1481 else
1482 dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE;
1483 }
1484
1485 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1486 {
1487 if (b43_using_pio(dev) &&
1488 (dev->dev->id.revision < 3) &&
1489 (!(reason & B43_IRQ_PIO_WORKAROUND))) {
1490 /* Apply a PIO specific workaround to the dma_reasons */
1491 pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0);
1492 pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1);
1493 pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2);
1494 pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3);
1495 }
1496
1497 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1498
1499 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1500 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1501 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1502 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1503 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1504 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1505 }
1506
1507 /* Interrupt handler top-half */
1508 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1509 {
1510 irqreturn_t ret = IRQ_NONE;
1511 struct b43_wldev *dev = dev_id;
1512 u32 reason;
1513
1514 if (!dev)
1515 return IRQ_NONE;
1516
1517 spin_lock(&dev->wl->irq_lock);
1518
1519 if (b43_status(dev) < B43_STAT_STARTED)
1520 goto out;
1521 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1522 if (reason == 0xffffffff) /* shared IRQ */
1523 goto out;
1524 ret = IRQ_HANDLED;
1525 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1526 if (!reason)
1527 goto out;
1528
1529 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1530 & 0x0001DC00;
1531 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1532 & 0x0000DC00;
1533 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1534 & 0x0000DC00;
1535 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1536 & 0x0001DC00;
1537 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1538 & 0x0000DC00;
1539 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1540 & 0x0000DC00;
1541
1542 b43_interrupt_ack(dev, reason);
1543 /* disable all IRQs. They are enabled again in the bottom half. */
1544 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1545 /* save the reason code and call our bottom half. */
1546 dev->irq_reason = reason;
1547 tasklet_schedule(&dev->isr_tasklet);
1548 out:
1549 mmiowb();
1550 spin_unlock(&dev->wl->irq_lock);
1551
1552 return ret;
1553 }
1554
1555 static void b43_release_firmware(struct b43_wldev *dev)
1556 {
1557 release_firmware(dev->fw.ucode);
1558 dev->fw.ucode = NULL;
1559 release_firmware(dev->fw.pcm);
1560 dev->fw.pcm = NULL;
1561 release_firmware(dev->fw.initvals);
1562 dev->fw.initvals = NULL;
1563 release_firmware(dev->fw.initvals_band);
1564 dev->fw.initvals_band = NULL;
1565 }
1566
1567 static void b43_print_fw_helptext(struct b43_wl *wl)
1568 {
1569 b43err(wl, "You must go to "
1570 "http://linuxwireless.org/en/users/Drivers/bcm43xx#devicefirmware "
1571 "and download the correct firmware (version 4).\n");
1572 }
1573
1574 static int do_request_fw(struct b43_wldev *dev,
1575 const char *name,
1576 const struct firmware **fw)
1577 {
1578 char path[sizeof(modparam_fwpostfix) + 32];
1579 struct b43_fw_header *hdr;
1580 u32 size;
1581 int err;
1582
1583 if (!name)
1584 return 0;
1585
1586 snprintf(path, ARRAY_SIZE(path),
1587 "b43%s/%s.fw",
1588 modparam_fwpostfix, name);
1589 err = request_firmware(fw, path, dev->dev->dev);
1590 if (err) {
1591 b43err(dev->wl, "Firmware file \"%s\" not found "
1592 "or load failed.\n", path);
1593 return err;
1594 }
1595 if ((*fw)->size < sizeof(struct b43_fw_header))
1596 goto err_format;
1597 hdr = (struct b43_fw_header *)((*fw)->data);
1598 switch (hdr->type) {
1599 case B43_FW_TYPE_UCODE:
1600 case B43_FW_TYPE_PCM:
1601 size = be32_to_cpu(hdr->size);
1602 if (size != (*fw)->size - sizeof(struct b43_fw_header))
1603 goto err_format;
1604 /* fallthrough */
1605 case B43_FW_TYPE_IV:
1606 if (hdr->ver != 1)
1607 goto err_format;
1608 break;
1609 default:
1610 goto err_format;
1611 }
1612
1613 return err;
1614
1615 err_format:
1616 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1617 return -EPROTO;
1618 }
1619
1620 static int b43_request_firmware(struct b43_wldev *dev)
1621 {
1622 struct b43_firmware *fw = &dev->fw;
1623 const u8 rev = dev->dev->id.revision;
1624 const char *filename;
1625 u32 tmshigh;
1626 int err;
1627
1628 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1629 if (!fw->ucode) {
1630 if ((rev >= 5) && (rev <= 10))
1631 filename = "ucode5";
1632 else if ((rev >= 11) && (rev <= 12))
1633 filename = "ucode11";
1634 else if (rev >= 13)
1635 filename = "ucode13";
1636 else
1637 goto err_no_ucode;
1638 err = do_request_fw(dev, filename, &fw->ucode);
1639 if (err)
1640 goto err_load;
1641 }
1642 if (!fw->pcm) {
1643 if ((rev >= 5) && (rev <= 10))
1644 filename = "pcm5";
1645 else if (rev >= 11)
1646 filename = NULL;
1647 else
1648 goto err_no_pcm;
1649 err = do_request_fw(dev, filename, &fw->pcm);
1650 if (err)
1651 goto err_load;
1652 }
1653 if (!fw->initvals) {
1654 switch (dev->phy.type) {
1655 case B43_PHYTYPE_A:
1656 if ((rev >= 5) && (rev <= 10)) {
1657 if (tmshigh & B43_TMSHIGH_GPHY)
1658 filename = "a0g1initvals5";
1659 else
1660 filename = "a0g0initvals5";
1661 } else
1662 goto err_no_initvals;
1663 break;
1664 case B43_PHYTYPE_G:
1665 if ((rev >= 5) && (rev <= 10))
1666 filename = "b0g0initvals5";
1667 else if (rev >= 13)
1668 filename = "lp0initvals13";
1669 else
1670 goto err_no_initvals;
1671 break;
1672 default:
1673 goto err_no_initvals;
1674 }
1675 err = do_request_fw(dev, filename, &fw->initvals);
1676 if (err)
1677 goto err_load;
1678 }
1679 if (!fw->initvals_band) {
1680 switch (dev->phy.type) {
1681 case B43_PHYTYPE_A:
1682 if ((rev >= 5) && (rev <= 10)) {
1683 if (tmshigh & B43_TMSHIGH_GPHY)
1684 filename = "a0g1bsinitvals5";
1685 else
1686 filename = "a0g0bsinitvals5";
1687 } else if (rev >= 11)
1688 filename = NULL;
1689 else
1690 goto err_no_initvals;
1691 break;
1692 case B43_PHYTYPE_G:
1693 if ((rev >= 5) && (rev <= 10))
1694 filename = "b0g0bsinitvals5";
1695 else if (rev >= 11)
1696 filename = NULL;
1697 else
1698 goto err_no_initvals;
1699 break;
1700 default:
1701 goto err_no_initvals;
1702 }
1703 err = do_request_fw(dev, filename, &fw->initvals_band);
1704 if (err)
1705 goto err_load;
1706 }
1707
1708 return 0;
1709
1710 err_load:
1711 b43_print_fw_helptext(dev->wl);
1712 goto error;
1713
1714 err_no_ucode:
1715 err = -ENODEV;
1716 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
1717 goto error;
1718
1719 err_no_pcm:
1720 err = -ENODEV;
1721 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
1722 goto error;
1723
1724 err_no_initvals:
1725 err = -ENODEV;
1726 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
1727 "core rev %u\n", dev->phy.type, rev);
1728 goto error;
1729
1730 error:
1731 b43_release_firmware(dev);
1732 return err;
1733 }
1734
1735 static int b43_upload_microcode(struct b43_wldev *dev)
1736 {
1737 const size_t hdr_len = sizeof(struct b43_fw_header);
1738 const __be32 *data;
1739 unsigned int i, len;
1740 u16 fwrev, fwpatch, fwdate, fwtime;
1741 u32 tmp;
1742 int err = 0;
1743
1744 /* Upload Microcode. */
1745 data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1746 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1747 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
1748 for (i = 0; i < len; i++) {
1749 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1750 udelay(10);
1751 }
1752
1753 if (dev->fw.pcm) {
1754 /* Upload PCM data. */
1755 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1756 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1757 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
1758 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
1759 /* No need for autoinc bit in SHM_HW */
1760 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
1761 for (i = 0; i < len; i++) {
1762 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1763 udelay(10);
1764 }
1765 }
1766
1767 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
1768 b43_write32(dev, B43_MMIO_MACCTL,
1769 B43_MACCTL_PSM_RUN |
1770 B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA);
1771
1772 /* Wait for the microcode to load and respond */
1773 i = 0;
1774 while (1) {
1775 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1776 if (tmp == B43_IRQ_MAC_SUSPENDED)
1777 break;
1778 i++;
1779 if (i >= 50) {
1780 b43err(dev->wl, "Microcode not responding\n");
1781 b43_print_fw_helptext(dev->wl);
1782 err = -ENODEV;
1783 goto out;
1784 }
1785 udelay(10);
1786 }
1787 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
1788
1789 /* Get and check the revisions. */
1790 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
1791 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
1792 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
1793 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
1794
1795 if (fwrev <= 0x128) {
1796 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
1797 "binary drivers older than version 4.x is unsupported. "
1798 "You must upgrade your firmware files.\n");
1799 b43_print_fw_helptext(dev->wl);
1800 b43_write32(dev, B43_MMIO_MACCTL, 0);
1801 err = -EOPNOTSUPP;
1802 goto out;
1803 }
1804 b43dbg(dev->wl, "Loading firmware version %u.%u "
1805 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
1806 fwrev, fwpatch,
1807 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1808 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
1809
1810 dev->fw.rev = fwrev;
1811 dev->fw.patch = fwpatch;
1812
1813 out:
1814 return err;
1815 }
1816
1817 static int b43_write_initvals(struct b43_wldev *dev,
1818 const struct b43_iv *ivals,
1819 size_t count,
1820 size_t array_size)
1821 {
1822 const struct b43_iv *iv;
1823 u16 offset;
1824 size_t i;
1825 bool bit32;
1826
1827 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
1828 iv = ivals;
1829 for (i = 0; i < count; i++) {
1830 if (array_size < sizeof(iv->offset_size))
1831 goto err_format;
1832 array_size -= sizeof(iv->offset_size);
1833 offset = be16_to_cpu(iv->offset_size);
1834 bit32 = !!(offset & B43_IV_32BIT);
1835 offset &= B43_IV_OFFSET_MASK;
1836 if (offset >= 0x1000)
1837 goto err_format;
1838 if (bit32) {
1839 u32 value;
1840
1841 if (array_size < sizeof(iv->data.d32))
1842 goto err_format;
1843 array_size -= sizeof(iv->data.d32);
1844
1845 value = be32_to_cpu(get_unaligned(&iv->data.d32));
1846 b43_write32(dev, offset, value);
1847
1848 iv = (const struct b43_iv *)((const uint8_t *)iv +
1849 sizeof(__be16) +
1850 sizeof(__be32));
1851 } else {
1852 u16 value;
1853
1854 if (array_size < sizeof(iv->data.d16))
1855 goto err_format;
1856 array_size -= sizeof(iv->data.d16);
1857
1858 value = be16_to_cpu(iv->data.d16);
1859 b43_write16(dev, offset, value);
1860
1861 iv = (const struct b43_iv *)((const uint8_t *)iv +
1862 sizeof(__be16) +
1863 sizeof(__be16));
1864 }
1865 }
1866 if (array_size)
1867 goto err_format;
1868
1869 return 0;
1870
1871 err_format:
1872 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
1873 b43_print_fw_helptext(dev->wl);
1874
1875 return -EPROTO;
1876 }
1877
1878 static int b43_upload_initvals(struct b43_wldev *dev)
1879 {
1880 const size_t hdr_len = sizeof(struct b43_fw_header);
1881 const struct b43_fw_header *hdr;
1882 struct b43_firmware *fw = &dev->fw;
1883 const struct b43_iv *ivals;
1884 size_t count;
1885 int err;
1886
1887 hdr = (const struct b43_fw_header *)(fw->initvals->data);
1888 ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len);
1889 count = be32_to_cpu(hdr->size);
1890 err = b43_write_initvals(dev, ivals, count,
1891 fw->initvals->size - hdr_len);
1892 if (err)
1893 goto out;
1894 if (fw->initvals_band) {
1895 hdr = (const struct b43_fw_header *)(fw->initvals_band->data);
1896 ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len);
1897 count = be32_to_cpu(hdr->size);
1898 err = b43_write_initvals(dev, ivals, count,
1899 fw->initvals_band->size - hdr_len);
1900 if (err)
1901 goto out;
1902 }
1903 out:
1904
1905 return err;
1906 }
1907
1908 /* Initialize the GPIOs
1909 * http://bcm-specs.sipsolutions.net/GPIO
1910 */
1911 static int b43_gpio_init(struct b43_wldev *dev)
1912 {
1913 struct ssb_bus *bus = dev->dev->bus;
1914 struct ssb_device *gpiodev, *pcidev = NULL;
1915 u32 mask, set;
1916
1917 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
1918 & ~B43_MACCTL_GPOUTSMSK);
1919
1920 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
1921 | 0x000F);
1922
1923 mask = 0x0000001F;
1924 set = 0x0000000F;
1925 if (dev->dev->bus->chip_id == 0x4301) {
1926 mask |= 0x0060;
1927 set |= 0x0060;
1928 }
1929 if (0 /* FIXME: conditional unknown */ ) {
1930 b43_write16(dev, B43_MMIO_GPIO_MASK,
1931 b43_read16(dev, B43_MMIO_GPIO_MASK)
1932 | 0x0100);
1933 mask |= 0x0180;
1934 set |= 0x0180;
1935 }
1936 if (dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_PACTRL) {
1937 b43_write16(dev, B43_MMIO_GPIO_MASK,
1938 b43_read16(dev, B43_MMIO_GPIO_MASK)
1939 | 0x0200);
1940 mask |= 0x0200;
1941 set |= 0x0200;
1942 }
1943 if (dev->dev->id.revision >= 2)
1944 mask |= 0x0010; /* FIXME: This is redundant. */
1945
1946 #ifdef CONFIG_SSB_DRIVER_PCICORE
1947 pcidev = bus->pcicore.dev;
1948 #endif
1949 gpiodev = bus->chipco.dev ? : pcidev;
1950 if (!gpiodev)
1951 return 0;
1952 ssb_write32(gpiodev, B43_GPIO_CONTROL,
1953 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
1954 & mask) | set);
1955
1956 return 0;
1957 }
1958
1959 /* Turn off all GPIO stuff. Call this on module unload, for example. */
1960 static void b43_gpio_cleanup(struct b43_wldev *dev)
1961 {
1962 struct ssb_bus *bus = dev->dev->bus;
1963 struct ssb_device *gpiodev, *pcidev = NULL;
1964
1965 #ifdef CONFIG_SSB_DRIVER_PCICORE
1966 pcidev = bus->pcicore.dev;
1967 #endif
1968 gpiodev = bus->chipco.dev ? : pcidev;
1969 if (!gpiodev)
1970 return;
1971 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
1972 }
1973
1974 /* http://bcm-specs.sipsolutions.net/EnableMac */
1975 void b43_mac_enable(struct b43_wldev *dev)
1976 {
1977 dev->mac_suspended--;
1978 B43_WARN_ON(dev->mac_suspended < 0);
1979 B43_WARN_ON(irqs_disabled());
1980 if (dev->mac_suspended == 0) {
1981 b43_write32(dev, B43_MMIO_MACCTL,
1982 b43_read32(dev, B43_MMIO_MACCTL)
1983 | B43_MACCTL_ENABLED);
1984 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
1985 B43_IRQ_MAC_SUSPENDED);
1986 /* Commit writes */
1987 b43_read32(dev, B43_MMIO_MACCTL);
1988 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1989 b43_power_saving_ctl_bits(dev, 0);
1990
1991 /* Re-enable IRQs. */
1992 spin_lock_irq(&dev->wl->irq_lock);
1993 b43_interrupt_enable(dev, dev->irq_savedstate);
1994 spin_unlock_irq(&dev->wl->irq_lock);
1995 }
1996 }
1997
1998 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
1999 void b43_mac_suspend(struct b43_wldev *dev)
2000 {
2001 int i;
2002 u32 tmp;
2003
2004 might_sleep();
2005 B43_WARN_ON(irqs_disabled());
2006 B43_WARN_ON(dev->mac_suspended < 0);
2007
2008 if (dev->mac_suspended == 0) {
2009 /* Mask IRQs before suspending MAC. Otherwise
2010 * the MAC stays busy and won't suspend. */
2011 spin_lock_irq(&dev->wl->irq_lock);
2012 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
2013 spin_unlock_irq(&dev->wl->irq_lock);
2014 b43_synchronize_irq(dev);
2015 dev->irq_savedstate = tmp;
2016
2017 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2018 b43_write32(dev, B43_MMIO_MACCTL,
2019 b43_read32(dev, B43_MMIO_MACCTL)
2020 & ~B43_MACCTL_ENABLED);
2021 /* force pci to flush the write */
2022 b43_read32(dev, B43_MMIO_MACCTL);
2023 for (i = 40; i; i--) {
2024 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2025 if (tmp & B43_IRQ_MAC_SUSPENDED)
2026 goto out;
2027 msleep(1);
2028 }
2029 b43err(dev->wl, "MAC suspend failed\n");
2030 }
2031 out:
2032 dev->mac_suspended++;
2033 }
2034
2035 static void b43_adjust_opmode(struct b43_wldev *dev)
2036 {
2037 struct b43_wl *wl = dev->wl;
2038 u32 ctl;
2039 u16 cfp_pretbtt;
2040
2041 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2042 /* Reset status to STA infrastructure mode. */
2043 ctl &= ~B43_MACCTL_AP;
2044 ctl &= ~B43_MACCTL_KEEP_CTL;
2045 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2046 ctl &= ~B43_MACCTL_KEEP_BAD;
2047 ctl &= ~B43_MACCTL_PROMISC;
2048 ctl &= ~B43_MACCTL_BEACPROMISC;
2049 ctl |= B43_MACCTL_INFRA;
2050
2051 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2052 ctl |= B43_MACCTL_AP;
2053 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2054 ctl &= ~B43_MACCTL_INFRA;
2055
2056 if (wl->filter_flags & FIF_CONTROL)
2057 ctl |= B43_MACCTL_KEEP_CTL;
2058 if (wl->filter_flags & FIF_FCSFAIL)
2059 ctl |= B43_MACCTL_KEEP_BAD;
2060 if (wl->filter_flags & FIF_PLCPFAIL)
2061 ctl |= B43_MACCTL_KEEP_BADPLCP;
2062 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2063 ctl |= B43_MACCTL_PROMISC;
2064 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2065 ctl |= B43_MACCTL_BEACPROMISC;
2066
2067 /* Workaround: On old hardware the HW-MAC-address-filter
2068 * doesn't work properly, so always run promisc in filter
2069 * it in software. */
2070 if (dev->dev->id.revision <= 4)
2071 ctl |= B43_MACCTL_PROMISC;
2072
2073 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2074
2075 cfp_pretbtt = 2;
2076 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2077 if (dev->dev->bus->chip_id == 0x4306 &&
2078 dev->dev->bus->chip_rev == 3)
2079 cfp_pretbtt = 100;
2080 else
2081 cfp_pretbtt = 50;
2082 }
2083 b43_write16(dev, 0x612, cfp_pretbtt);
2084 }
2085
2086 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2087 {
2088 u16 offset;
2089
2090 if (is_ofdm) {
2091 offset = 0x480;
2092 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2093 } else {
2094 offset = 0x4C0;
2095 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2096 }
2097 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2098 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2099 }
2100
2101 static void b43_rate_memory_init(struct b43_wldev *dev)
2102 {
2103 switch (dev->phy.type) {
2104 case B43_PHYTYPE_A:
2105 case B43_PHYTYPE_G:
2106 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2107 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2108 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2109 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2110 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2111 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2112 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2113 if (dev->phy.type == B43_PHYTYPE_A)
2114 break;
2115 /* fallthrough */
2116 case B43_PHYTYPE_B:
2117 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2118 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2119 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2120 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2121 break;
2122 default:
2123 B43_WARN_ON(1);
2124 }
2125 }
2126
2127 /* Set the TX-Antenna for management frames sent by firmware. */
2128 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2129 {
2130 u16 ant = 0;
2131 u16 tmp;
2132
2133 switch (antenna) {
2134 case B43_ANTENNA0:
2135 ant |= B43_TX4_PHY_ANT0;
2136 break;
2137 case B43_ANTENNA1:
2138 ant |= B43_TX4_PHY_ANT1;
2139 break;
2140 case B43_ANTENNA_AUTO:
2141 ant |= B43_TX4_PHY_ANTLAST;
2142 break;
2143 default:
2144 B43_WARN_ON(1);
2145 }
2146
2147 /* FIXME We also need to set the other flags of the PHY control field somewhere. */
2148
2149 /* For Beacons */
2150 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
2151 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2152 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
2153 /* For ACK/CTS */
2154 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2155 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2156 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2157 /* For Probe Resposes */
2158 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2159 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2160 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2161 }
2162
2163 /* This is the opposite of b43_chip_init() */
2164 static void b43_chip_exit(struct b43_wldev *dev)
2165 {
2166 b43_radio_turn_off(dev, 1);
2167 b43_leds_exit(dev);
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 */
2195 b43_leds_init(dev);
2196
2197 err = b43_upload_initvals(dev);
2198 if (err)
2199 goto err_leds_exit;
2200 b43_radio_turn_on(dev);
2201
2202 b43_write16(dev, 0x03E6, 0x0000);
2203 err = b43_phy_init(dev);
2204 if (err)
2205 goto err_radio_off;
2206
2207 /* Select initial Interference Mitigation. */
2208 tmp = phy->interfmode;
2209 phy->interfmode = B43_INTERFMODE_NONE;
2210 b43_radio_set_interference_mitigation(dev, tmp);
2211
2212 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2213 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2214
2215 if (phy->type == B43_PHYTYPE_B) {
2216 value16 = b43_read16(dev, 0x005E);
2217 value16 |= 0x0004;
2218 b43_write16(dev, 0x005E, value16);
2219 }
2220 b43_write32(dev, 0x0100, 0x01000000);
2221 if (dev->dev->id.revision < 5)
2222 b43_write32(dev, 0x010C, 0x01000000);
2223
2224 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2225 & ~B43_MACCTL_INFRA);
2226 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2227 | B43_MACCTL_INFRA);
2228
2229 if (b43_using_pio(dev)) {
2230 b43_write32(dev, 0x0210, 0x00000100);
2231 b43_write32(dev, 0x0230, 0x00000100);
2232 b43_write32(dev, 0x0250, 0x00000100);
2233 b43_write32(dev, 0x0270, 0x00000100);
2234 b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000);
2235 }
2236
2237 /* Probe Response Timeout value */
2238 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2239 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2240
2241 /* Initially set the wireless operation mode. */
2242 b43_adjust_opmode(dev);
2243
2244 if (dev->dev->id.revision < 3) {
2245 b43_write16(dev, 0x060E, 0x0000);
2246 b43_write16(dev, 0x0610, 0x8000);
2247 b43_write16(dev, 0x0604, 0x0000);
2248 b43_write16(dev, 0x0606, 0x0200);
2249 } else {
2250 b43_write32(dev, 0x0188, 0x80000000);
2251 b43_write32(dev, 0x018C, 0x02000000);
2252 }
2253 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2254 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2255 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2256 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2257 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2258 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2259 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2260
2261 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2262 value32 |= 0x00100000;
2263 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2264
2265 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2266 dev->dev->bus->chipco.fast_pwrup_delay);
2267
2268 err = 0;
2269 b43dbg(dev->wl, "Chip initialized\n");
2270 out:
2271 return err;
2272
2273 err_radio_off:
2274 b43_radio_turn_off(dev, 1);
2275 err_leds_exit:
2276 b43_leds_exit(dev);
2277 b43_gpio_cleanup(dev);
2278 return err;
2279 }
2280
2281 static void b43_periodic_every120sec(struct b43_wldev *dev)
2282 {
2283 struct b43_phy *phy = &dev->phy;
2284
2285 if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2286 return;
2287
2288 b43_mac_suspend(dev);
2289 b43_lo_g_measure(dev);
2290 b43_mac_enable(dev);
2291 if (b43_has_hardware_pctl(phy))
2292 b43_lo_g_ctl_mark_all_unused(dev);
2293 }
2294
2295 static void b43_periodic_every60sec(struct b43_wldev *dev)
2296 {
2297 struct b43_phy *phy = &dev->phy;
2298
2299 if (!b43_has_hardware_pctl(phy))
2300 b43_lo_g_ctl_mark_all_unused(dev);
2301 if (dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_RSSI) {
2302 b43_mac_suspend(dev);
2303 b43_calc_nrssi_slope(dev);
2304 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2305 u8 old_chan = phy->channel;
2306
2307 /* VCO Calibration */
2308 if (old_chan >= 8)
2309 b43_radio_selectchannel(dev, 1, 0);
2310 else
2311 b43_radio_selectchannel(dev, 13, 0);
2312 b43_radio_selectchannel(dev, old_chan, 0);
2313 }
2314 b43_mac_enable(dev);
2315 }
2316 }
2317
2318 static void b43_periodic_every30sec(struct b43_wldev *dev)
2319 {
2320 /* Update device statistics. */
2321 b43_calculate_link_quality(dev);
2322 }
2323
2324 static void b43_periodic_every15sec(struct b43_wldev *dev)
2325 {
2326 struct b43_phy *phy = &dev->phy;
2327
2328 if (phy->type == B43_PHYTYPE_G) {
2329 //TODO: update_aci_moving_average
2330 if (phy->aci_enable && phy->aci_wlan_automatic) {
2331 b43_mac_suspend(dev);
2332 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2333 if (0 /*TODO: bunch of conditions */ ) {
2334 b43_radio_set_interference_mitigation
2335 (dev, B43_INTERFMODE_MANUALWLAN);
2336 }
2337 } else if (1 /*TODO*/) {
2338 /*
2339 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2340 b43_radio_set_interference_mitigation(dev,
2341 B43_INTERFMODE_NONE);
2342 }
2343 */
2344 }
2345 b43_mac_enable(dev);
2346 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2347 phy->rev == 1) {
2348 //TODO: implement rev1 workaround
2349 }
2350 }
2351 b43_phy_xmitpower(dev); //FIXME: unless scanning?
2352 //TODO for APHY (temperature?)
2353 }
2354
2355 static void do_periodic_work(struct b43_wldev *dev)
2356 {
2357 unsigned int state;
2358
2359 state = dev->periodic_state;
2360 if (state % 8 == 0)
2361 b43_periodic_every120sec(dev);
2362 if (state % 4 == 0)
2363 b43_periodic_every60sec(dev);
2364 if (state % 2 == 0)
2365 b43_periodic_every30sec(dev);
2366 b43_periodic_every15sec(dev);
2367 }
2368
2369 /* Periodic work locking policy:
2370 * The whole periodic work handler is protected by
2371 * wl->mutex. If another lock is needed somewhere in the
2372 * pwork callchain, it's aquired in-place, where it's needed.
2373 */
2374 static void b43_periodic_work_handler(struct work_struct *work)
2375 {
2376 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2377 periodic_work.work);
2378 struct b43_wl *wl = dev->wl;
2379 unsigned long delay;
2380
2381 mutex_lock(&wl->mutex);
2382
2383 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2384 goto out;
2385 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2386 goto out_requeue;
2387
2388 do_periodic_work(dev);
2389
2390 dev->periodic_state++;
2391 out_requeue:
2392 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2393 delay = msecs_to_jiffies(50);
2394 else
2395 delay = round_jiffies(HZ * 15);
2396 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2397 out:
2398 mutex_unlock(&wl->mutex);
2399 }
2400
2401 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2402 {
2403 struct delayed_work *work = &dev->periodic_work;
2404
2405 dev->periodic_state = 0;
2406 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2407 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2408 }
2409
2410 /* Validate access to the chip (SHM) */
2411 static int b43_validate_chipaccess(struct b43_wldev *dev)
2412 {
2413 u32 value;
2414 u32 shm_backup;
2415
2416 shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2417 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2418 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2419 goto error;
2420 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2421 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2422 goto error;
2423 b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup);
2424
2425 value = b43_read32(dev, B43_MMIO_MACCTL);
2426 if ((value | B43_MACCTL_GMODE) !=
2427 (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2428 goto error;
2429
2430 value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2431 if (value)
2432 goto error;
2433
2434 return 0;
2435 error:
2436 b43err(dev->wl, "Failed to validate the chipaccess\n");
2437 return -ENODEV;
2438 }
2439
2440 static void b43_security_init(struct b43_wldev *dev)
2441 {
2442 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2443 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2444 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2445 /* KTP is a word address, but we address SHM bytewise.
2446 * So multiply by two.
2447 */
2448 dev->ktp *= 2;
2449 if (dev->dev->id.revision >= 5) {
2450 /* Number of RCMTA address slots */
2451 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2452 }
2453 b43_clear_keys(dev);
2454 }
2455
2456 static int b43_rng_read(struct hwrng *rng, u32 * data)
2457 {
2458 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2459 unsigned long flags;
2460
2461 /* Don't take wl->mutex here, as it could deadlock with
2462 * hwrng internal locking. It's not needed to take
2463 * wl->mutex here, anyway. */
2464
2465 spin_lock_irqsave(&wl->irq_lock, flags);
2466 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2467 spin_unlock_irqrestore(&wl->irq_lock, flags);
2468
2469 return (sizeof(u16));
2470 }
2471
2472 static void b43_rng_exit(struct b43_wl *wl)
2473 {
2474 if (wl->rng_initialized)
2475 hwrng_unregister(&wl->rng);
2476 }
2477
2478 static int b43_rng_init(struct b43_wl *wl)
2479 {
2480 int err;
2481
2482 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2483 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2484 wl->rng.name = wl->rng_name;
2485 wl->rng.data_read = b43_rng_read;
2486 wl->rng.priv = (unsigned long)wl;
2487 wl->rng_initialized = 1;
2488 err = hwrng_register(&wl->rng);
2489 if (err) {
2490 wl->rng_initialized = 0;
2491 b43err(wl, "Failed to register the random "
2492 "number generator (%d)\n", err);
2493 }
2494
2495 return err;
2496 }
2497
2498 static int b43_tx(struct ieee80211_hw *hw,
2499 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2500 {
2501 struct b43_wl *wl = hw_to_b43_wl(hw);
2502 struct b43_wldev *dev = wl->current_dev;
2503 int err = -ENODEV;
2504 unsigned long flags;
2505
2506 if (unlikely(!dev))
2507 goto out;
2508 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2509 goto out;
2510 /* DMA-TX is done without a global lock. */
2511 if (b43_using_pio(dev)) {
2512 spin_lock_irqsave(&wl->irq_lock, flags);
2513 err = b43_pio_tx(dev, skb, ctl);
2514 spin_unlock_irqrestore(&wl->irq_lock, flags);
2515 } else
2516 err = b43_dma_tx(dev, skb, ctl);
2517 out:
2518 if (unlikely(err))
2519 return NETDEV_TX_BUSY;
2520 return NETDEV_TX_OK;
2521 }
2522
2523 static int b43_conf_tx(struct ieee80211_hw *hw,
2524 int queue,
2525 const struct ieee80211_tx_queue_params *params)
2526 {
2527 return 0;
2528 }
2529
2530 static int b43_get_tx_stats(struct ieee80211_hw *hw,
2531 struct ieee80211_tx_queue_stats *stats)
2532 {
2533 struct b43_wl *wl = hw_to_b43_wl(hw);
2534 struct b43_wldev *dev = wl->current_dev;
2535 unsigned long flags;
2536 int err = -ENODEV;
2537
2538 if (!dev)
2539 goto out;
2540 spin_lock_irqsave(&wl->irq_lock, flags);
2541 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2542 if (b43_using_pio(dev))
2543 b43_pio_get_tx_stats(dev, stats);
2544 else
2545 b43_dma_get_tx_stats(dev, stats);
2546 err = 0;
2547 }
2548 spin_unlock_irqrestore(&wl->irq_lock, flags);
2549 out:
2550 return err;
2551 }
2552
2553 static int b43_get_stats(struct ieee80211_hw *hw,
2554 struct ieee80211_low_level_stats *stats)
2555 {
2556 struct b43_wl *wl = hw_to_b43_wl(hw);
2557 unsigned long flags;
2558
2559 spin_lock_irqsave(&wl->irq_lock, flags);
2560 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2561 spin_unlock_irqrestore(&wl->irq_lock, flags);
2562
2563 return 0;
2564 }
2565
2566 static const char *phymode_to_string(unsigned int phymode)
2567 {
2568 switch (phymode) {
2569 case B43_PHYMODE_A:
2570 return "A";
2571 case B43_PHYMODE_B:
2572 return "B";
2573 case B43_PHYMODE_G:
2574 return "G";
2575 default:
2576 B43_WARN_ON(1);
2577 }
2578 return "";
2579 }
2580
2581 static int find_wldev_for_phymode(struct b43_wl *wl,
2582 unsigned int phymode,
2583 struct b43_wldev **dev, bool * gmode)
2584 {
2585 struct b43_wldev *d;
2586
2587 list_for_each_entry(d, &wl->devlist, list) {
2588 if (d->phy.possible_phymodes & phymode) {
2589 /* Ok, this device supports the PHY-mode.
2590 * Now figure out how the gmode bit has to be
2591 * set to support it. */
2592 if (phymode == B43_PHYMODE_A)
2593 *gmode = 0;
2594 else
2595 *gmode = 1;
2596 *dev = d;
2597
2598 return 0;
2599 }
2600 }
2601
2602 return -ESRCH;
2603 }
2604
2605 static void b43_put_phy_into_reset(struct b43_wldev *dev)
2606 {
2607 struct ssb_device *sdev = dev->dev;
2608 u32 tmslow;
2609
2610 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2611 tmslow &= ~B43_TMSLOW_GMODE;
2612 tmslow |= B43_TMSLOW_PHYRESET;
2613 tmslow |= SSB_TMSLOW_FGC;
2614 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2615 msleep(1);
2616
2617 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2618 tmslow &= ~SSB_TMSLOW_FGC;
2619 tmslow |= B43_TMSLOW_PHYRESET;
2620 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2621 msleep(1);
2622 }
2623
2624 /* Expects wl->mutex locked */
2625 static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode)
2626 {
2627 struct b43_wldev *up_dev;
2628 struct b43_wldev *down_dev;
2629 int err;
2630 bool gmode = 0;
2631 int prev_status;
2632
2633 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2634 if (err) {
2635 b43err(wl, "Could not find a device for %s-PHY mode\n",
2636 phymode_to_string(new_mode));
2637 return err;
2638 }
2639 if ((up_dev == wl->current_dev) &&
2640 (!!wl->current_dev->phy.gmode == !!gmode)) {
2641 /* This device is already running. */
2642 return 0;
2643 }
2644 b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2645 phymode_to_string(new_mode));
2646 down_dev = wl->current_dev;
2647
2648 prev_status = b43_status(down_dev);
2649 /* Shutdown the currently running core. */
2650 if (prev_status >= B43_STAT_STARTED)
2651 b43_wireless_core_stop(down_dev);
2652 if (prev_status >= B43_STAT_INITIALIZED)
2653 b43_wireless_core_exit(down_dev);
2654
2655 if (down_dev != up_dev) {
2656 /* We switch to a different core, so we put PHY into
2657 * RESET on the old core. */
2658 b43_put_phy_into_reset(down_dev);
2659 }
2660
2661 /* Now start the new core. */
2662 up_dev->phy.gmode = gmode;
2663 if (prev_status >= B43_STAT_INITIALIZED) {
2664 err = b43_wireless_core_init(up_dev);
2665 if (err) {
2666 b43err(wl, "Fatal: Could not initialize device for "
2667 "newly selected %s-PHY mode\n",
2668 phymode_to_string(new_mode));
2669 goto init_failure;
2670 }
2671 }
2672 if (prev_status >= B43_STAT_STARTED) {
2673 err = b43_wireless_core_start(up_dev);
2674 if (err) {
2675 b43err(wl, "Fatal: Coult not start device for "
2676 "newly selected %s-PHY mode\n",
2677 phymode_to_string(new_mode));
2678 b43_wireless_core_exit(up_dev);
2679 goto init_failure;
2680 }
2681 }
2682 B43_WARN_ON(b43_status(up_dev) != prev_status);
2683
2684 wl->current_dev = up_dev;
2685
2686 return 0;
2687 init_failure:
2688 /* Whoops, failed to init the new core. No core is operating now. */
2689 wl->current_dev = NULL;
2690 return err;
2691 }
2692
2693 static int b43_antenna_from_ieee80211(u8 antenna)
2694 {
2695 switch (antenna) {
2696 case 0: /* default/diversity */
2697 return B43_ANTENNA_DEFAULT;
2698 case 1: /* Antenna 0 */
2699 return B43_ANTENNA0;
2700 case 2: /* Antenna 1 */
2701 return B43_ANTENNA1;
2702 default:
2703 return B43_ANTENNA_DEFAULT;
2704 }
2705 }
2706
2707 static int b43_dev_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2708 {
2709 struct b43_wl *wl = hw_to_b43_wl(hw);
2710 struct b43_wldev *dev;
2711 struct b43_phy *phy;
2712 unsigned long flags;
2713 unsigned int new_phymode = 0xFFFF;
2714 int antenna_tx;
2715 int antenna_rx;
2716 int err = 0;
2717 u32 savedirqs;
2718
2719 antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx);
2720 antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx);
2721
2722 mutex_lock(&wl->mutex);
2723
2724 /* Switch the PHY mode (if necessary). */
2725 switch (conf->phymode) {
2726 case MODE_IEEE80211A:
2727 new_phymode = B43_PHYMODE_A;
2728 break;
2729 case MODE_IEEE80211B:
2730 new_phymode = B43_PHYMODE_B;
2731 break;
2732 case MODE_IEEE80211G:
2733 new_phymode = B43_PHYMODE_G;
2734 break;
2735 default:
2736 B43_WARN_ON(1);
2737 }
2738 err = b43_switch_phymode(wl, new_phymode);
2739 if (err)
2740 goto out_unlock_mutex;
2741 dev = wl->current_dev;
2742 phy = &dev->phy;
2743
2744 /* Disable IRQs while reconfiguring the device.
2745 * This makes it possible to drop the spinlock throughout
2746 * the reconfiguration process. */
2747 spin_lock_irqsave(&wl->irq_lock, flags);
2748 if (b43_status(dev) < B43_STAT_STARTED) {
2749 spin_unlock_irqrestore(&wl->irq_lock, flags);
2750 goto out_unlock_mutex;
2751 }
2752 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
2753 spin_unlock_irqrestore(&wl->irq_lock, flags);
2754 b43_synchronize_irq(dev);
2755
2756 /* Switch to the requested channel.
2757 * The firmware takes care of races with the TX handler. */
2758 if (conf->channel_val != phy->channel)
2759 b43_radio_selectchannel(dev, conf->channel_val, 0);
2760
2761 /* Enable/Disable ShortSlot timing. */
2762 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
2763 dev->short_slot) {
2764 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
2765 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
2766 b43_short_slot_timing_enable(dev);
2767 else
2768 b43_short_slot_timing_disable(dev);
2769 }
2770
2771 /* Adjust the desired TX power level. */
2772 if (conf->power_level != 0) {
2773 if (conf->power_level != phy->power_level) {
2774 phy->power_level = conf->power_level;
2775 b43_phy_xmitpower(dev);
2776 }
2777 }
2778
2779 /* Antennas for RX and management frame TX. */
2780 b43_mgmtframe_txantenna(dev, antenna_tx);
2781 b43_set_rx_antenna(dev, antenna_rx);
2782
2783 /* Update templates for AP mode. */
2784 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2785 b43_set_beacon_int(dev, conf->beacon_int);
2786
2787 if (!!conf->radio_enabled != phy->radio_on) {
2788 if (conf->radio_enabled) {
2789 b43_radio_turn_on(dev);
2790 b43info(dev->wl, "Radio turned on by software\n");
2791 if (!dev->radio_hw_enable) {
2792 b43info(dev->wl, "The hardware RF-kill button "
2793 "still turns the radio physically off. "
2794 "Press the button to turn it on.\n");
2795 }
2796 } else {
2797 b43_radio_turn_off(dev, 0);
2798 b43info(dev->wl, "Radio turned off by software\n");
2799 }
2800 }
2801
2802 spin_lock_irqsave(&wl->irq_lock, flags);
2803 b43_interrupt_enable(dev, savedirqs);
2804 mmiowb();
2805 spin_unlock_irqrestore(&wl->irq_lock, flags);
2806 out_unlock_mutex:
2807 mutex_unlock(&wl->mutex);
2808
2809 return err;
2810 }
2811
2812 static int b43_dev_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2813 const u8 *local_addr, const u8 *addr,
2814 struct ieee80211_key_conf *key)
2815 {
2816 struct b43_wl *wl = hw_to_b43_wl(hw);
2817 struct b43_wldev *dev = wl->current_dev;
2818 unsigned long flags;
2819 u8 algorithm;
2820 u8 index;
2821 int err = -EINVAL;
2822 DECLARE_MAC_BUF(mac);
2823
2824 if (modparam_nohwcrypt)
2825 return -ENOSPC; /* User disabled HW-crypto */
2826
2827 if (!dev)
2828 return -ENODEV;
2829 switch (key->alg) {
2830 case ALG_WEP:
2831 if (key->keylen == 5)
2832 algorithm = B43_SEC_ALGO_WEP40;
2833 else
2834 algorithm = B43_SEC_ALGO_WEP104;
2835 break;
2836 case ALG_TKIP:
2837 algorithm = B43_SEC_ALGO_TKIP;
2838 break;
2839 case ALG_CCMP:
2840 algorithm = B43_SEC_ALGO_AES;
2841 break;
2842 default:
2843 B43_WARN_ON(1);
2844 goto out;
2845 }
2846
2847 index = (u8) (key->keyidx);
2848 if (index > 3)
2849 goto out;
2850
2851 mutex_lock(&wl->mutex);
2852 spin_lock_irqsave(&wl->irq_lock, flags);
2853
2854 if (b43_status(dev) < B43_STAT_INITIALIZED) {
2855 err = -ENODEV;
2856 goto out_unlock;
2857 }
2858
2859 switch (cmd) {
2860 case SET_KEY:
2861 if (algorithm == B43_SEC_ALGO_TKIP) {
2862 /* FIXME: No TKIP hardware encryption for now. */
2863 err = -EOPNOTSUPP;
2864 goto out_unlock;
2865 }
2866
2867 if (is_broadcast_ether_addr(addr)) {
2868 /* addr is FF:FF:FF:FF:FF:FF for default keys */
2869 err = b43_key_write(dev, index, algorithm,
2870 key->key, key->keylen, NULL, key);
2871 } else {
2872 /*
2873 * either pairwise key or address is 00:00:00:00:00:00
2874 * for transmit-only keys
2875 */
2876 err = b43_key_write(dev, -1, algorithm,
2877 key->key, key->keylen, addr, key);
2878 }
2879 if (err)
2880 goto out_unlock;
2881
2882 if (algorithm == B43_SEC_ALGO_WEP40 ||
2883 algorithm == B43_SEC_ALGO_WEP104) {
2884 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
2885 } else {
2886 b43_hf_write(dev,
2887 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
2888 }
2889 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2890 break;
2891 case DISABLE_KEY: {
2892 err = b43_key_clear(dev, key->hw_key_idx);
2893 if (err)
2894 goto out_unlock;
2895 break;
2896 }
2897 default:
2898 B43_WARN_ON(1);
2899 }
2900 out_unlock:
2901 spin_unlock_irqrestore(&wl->irq_lock, flags);
2902 mutex_unlock(&wl->mutex);
2903 out:
2904 if (!err) {
2905 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
2906 "mac: %s\n",
2907 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
2908 print_mac(mac, addr));
2909 }
2910 return err;
2911 }
2912
2913 static void b43_configure_filter(struct ieee80211_hw *hw,
2914 unsigned int changed, unsigned int *fflags,
2915 int mc_count, struct dev_addr_list *mc_list)
2916 {
2917 struct b43_wl *wl = hw_to_b43_wl(hw);
2918 struct b43_wldev *dev = wl->current_dev;
2919 unsigned long flags;
2920
2921 if (!dev) {
2922 *fflags = 0;
2923 return;
2924 }
2925
2926 spin_lock_irqsave(&wl->irq_lock, flags);
2927 *fflags &= FIF_PROMISC_IN_BSS |
2928 FIF_ALLMULTI |
2929 FIF_FCSFAIL |
2930 FIF_PLCPFAIL |
2931 FIF_CONTROL |
2932 FIF_OTHER_BSS |
2933 FIF_BCN_PRBRESP_PROMISC;
2934
2935 changed &= FIF_PROMISC_IN_BSS |
2936 FIF_ALLMULTI |
2937 FIF_FCSFAIL |
2938 FIF_PLCPFAIL |
2939 FIF_CONTROL |
2940 FIF_OTHER_BSS |
2941 FIF_BCN_PRBRESP_PROMISC;
2942
2943 wl->filter_flags = *fflags;
2944
2945 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
2946 b43_adjust_opmode(dev);
2947 spin_unlock_irqrestore(&wl->irq_lock, flags);
2948 }
2949
2950 static int b43_config_interface(struct ieee80211_hw *hw,
2951 int if_id, struct ieee80211_if_conf *conf)
2952 {
2953 struct b43_wl *wl = hw_to_b43_wl(hw);
2954 struct b43_wldev *dev = wl->current_dev;
2955 unsigned long flags;
2956
2957 if (!dev)
2958 return -ENODEV;
2959 mutex_lock(&wl->mutex);
2960 spin_lock_irqsave(&wl->irq_lock, flags);
2961 B43_WARN_ON(wl->if_id != if_id);
2962 if (conf->bssid)
2963 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2964 else
2965 memset(wl->bssid, 0, ETH_ALEN);
2966 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
2967 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
2968 B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
2969 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
2970 if (conf->beacon)
2971 b43_refresh_templates(dev, conf->beacon);
2972 }
2973 b43_write_mac_bssid_templates(dev);
2974 }
2975 spin_unlock_irqrestore(&wl->irq_lock, flags);
2976 mutex_unlock(&wl->mutex);
2977
2978 return 0;
2979 }
2980
2981 /* Locking: wl->mutex */
2982 static void b43_wireless_core_stop(struct b43_wldev *dev)
2983 {
2984 struct b43_wl *wl = dev->wl;
2985 unsigned long flags;
2986
2987 if (b43_status(dev) < B43_STAT_STARTED)
2988 return;
2989 b43_set_status(dev, B43_STAT_INITIALIZED);
2990
2991 mutex_unlock(&wl->mutex);
2992 /* Must unlock as it would otherwise deadlock. No races here.
2993 * Cancel the possibly running self-rearming periodic work. */
2994 cancel_delayed_work_sync(&dev->periodic_work);
2995 mutex_lock(&wl->mutex);
2996
2997 ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
2998
2999 /* Disable and sync interrupts. */
3000 spin_lock_irqsave(&wl->irq_lock, flags);
3001 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3002 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3003 spin_unlock_irqrestore(&wl->irq_lock, flags);
3004 b43_synchronize_irq(dev);
3005
3006 b43_mac_suspend(dev);
3007 free_irq(dev->dev->irq, dev);
3008 b43dbg(wl, "Wireless interface stopped\n");
3009 }
3010
3011 /* Locking: wl->mutex */
3012 static int b43_wireless_core_start(struct b43_wldev *dev)
3013 {
3014 int err;
3015
3016 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3017
3018 drain_txstatus_queue(dev);
3019 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3020 IRQF_SHARED, KBUILD_MODNAME, dev);
3021 if (err) {
3022 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3023 goto out;
3024 }
3025
3026 /* We are ready to run. */
3027 b43_set_status(dev, B43_STAT_STARTED);
3028
3029 /* Start data flow (TX/RX). */
3030 b43_mac_enable(dev);
3031 b43_interrupt_enable(dev, dev->irq_savedstate);
3032 ieee80211_start_queues(dev->wl->hw);
3033
3034 /* Start maintainance work */
3035 b43_periodic_tasks_setup(dev);
3036
3037 b43dbg(dev->wl, "Wireless interface started\n");
3038 out:
3039 return err;
3040 }
3041
3042 /* Get PHY and RADIO versioning numbers */
3043 static int b43_phy_versioning(struct b43_wldev *dev)
3044 {
3045 struct b43_phy *phy = &dev->phy;
3046 u32 tmp;
3047 u8 analog_type;
3048 u8 phy_type;
3049 u8 phy_rev;
3050 u16 radio_manuf;
3051 u16 radio_ver;
3052 u16 radio_rev;
3053 int unsupported = 0;
3054
3055 /* Get PHY versioning */
3056 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3057 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3058 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3059 phy_rev = (tmp & B43_PHYVER_VERSION);
3060 switch (phy_type) {
3061 case B43_PHYTYPE_A:
3062 if (phy_rev >= 4)
3063 unsupported = 1;
3064 break;
3065 case B43_PHYTYPE_B:
3066 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3067 && phy_rev != 7)
3068 unsupported = 1;
3069 break;
3070 case B43_PHYTYPE_G:
3071 if (phy_rev > 8)
3072 unsupported = 1;
3073 break;
3074 default:
3075 unsupported = 1;
3076 };
3077 if (unsupported) {
3078 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3079 "(Analog %u, Type %u, Revision %u)\n",
3080 analog_type, phy_type, phy_rev);
3081 return -EOPNOTSUPP;
3082 }
3083 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3084 analog_type, phy_type, phy_rev);
3085
3086 /* Get RADIO versioning */
3087 if (dev->dev->bus->chip_id == 0x4317) {
3088 if (dev->dev->bus->chip_rev == 0)
3089 tmp = 0x3205017F;
3090 else if (dev->dev->bus->chip_rev == 1)
3091 tmp = 0x4205017F;
3092 else
3093 tmp = 0x5205017F;
3094 } else {
3095 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3096 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH);
3097 tmp <<= 16;
3098 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3099 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3100 }
3101 radio_manuf = (tmp & 0x00000FFF);
3102 radio_ver = (tmp & 0x0FFFF000) >> 12;
3103 radio_rev = (tmp & 0xF0000000) >> 28;
3104 switch (phy_type) {
3105 case B43_PHYTYPE_A:
3106 if (radio_ver != 0x2060)
3107 unsupported = 1;
3108 if (radio_rev != 1)
3109 unsupported = 1;
3110 if (radio_manuf != 0x17F)
3111 unsupported = 1;
3112 break;
3113 case B43_PHYTYPE_B:
3114 if ((radio_ver & 0xFFF0) != 0x2050)
3115 unsupported = 1;
3116 break;
3117 case B43_PHYTYPE_G:
3118 if (radio_ver != 0x2050)
3119 unsupported = 1;
3120 break;
3121 default:
3122 B43_WARN_ON(1);
3123 }
3124 if (unsupported) {
3125 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3126 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3127 radio_manuf, radio_ver, radio_rev);
3128 return -EOPNOTSUPP;
3129 }
3130 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3131 radio_manuf, radio_ver, radio_rev);
3132
3133 phy->radio_manuf = radio_manuf;
3134 phy->radio_ver = radio_ver;
3135 phy->radio_rev = radio_rev;
3136
3137 phy->analog = analog_type;
3138 phy->type = phy_type;
3139 phy->rev = phy_rev;
3140
3141 return 0;
3142 }
3143
3144 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3145 struct b43_phy *phy)
3146 {
3147 struct b43_txpower_lo_control *lo;
3148 int i;
3149
3150 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3151 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3152
3153 /* Flags */
3154 phy->locked = 0;
3155
3156 phy->aci_enable = 0;
3157 phy->aci_wlan_automatic = 0;
3158 phy->aci_hw_rssi = 0;
3159
3160 phy->radio_off_context.valid = 0;
3161
3162 lo = phy->lo_control;
3163 if (lo) {
3164 memset(lo, 0, sizeof(*(phy->lo_control)));
3165 lo->rebuild = 1;
3166 lo->tx_bias = 0xFF;
3167 }
3168 phy->max_lb_gain = 0;
3169 phy->trsw_rx_gain = 0;
3170 phy->txpwr_offset = 0;
3171
3172 /* NRSSI */
3173 phy->nrssislope = 0;
3174 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3175 phy->nrssi[i] = -1000;
3176 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3177 phy->nrssi_lt[i] = i;
3178
3179 phy->lofcal = 0xFFFF;
3180 phy->initval = 0xFFFF;
3181
3182 spin_lock_init(&phy->lock);
3183 phy->interfmode = B43_INTERFMODE_NONE;
3184 phy->channel = 0xFF;
3185
3186 phy->hardware_power_control = !!modparam_hwpctl;
3187 }
3188
3189 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3190 {
3191 /* Flags */
3192 dev->reg124_set_0x4 = 0;
3193 /* Assume the radio is enabled. If it's not enabled, the state will
3194 * immediately get fixed on the first periodic work run. */
3195 dev->radio_hw_enable = 1;
3196
3197 /* Stats */
3198 memset(&dev->stats, 0, sizeof(dev->stats));
3199
3200 setup_struct_phy_for_init(dev, &dev->phy);
3201
3202 /* IRQ related flags */
3203 dev->irq_reason = 0;
3204 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3205 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3206
3207 dev->mac_suspended = 1;
3208
3209 /* Noise calculation context */
3210 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3211 }
3212
3213 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3214 {
3215 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3216 u32 hf;
3217
3218 if (!(sprom->r1.boardflags_lo & B43_BFL_BTCOEXIST))
3219 return;
3220 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3221 return;
3222
3223 hf = b43_hf_read(dev);
3224 if (sprom->r1.boardflags_lo & B43_BFL_BTCMOD)
3225 hf |= B43_HF_BTCOEXALT;
3226 else
3227 hf |= B43_HF_BTCOEX;
3228 b43_hf_write(dev, hf);
3229 //TODO
3230 }
3231
3232 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3233 { //TODO
3234 }
3235
3236 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3237 {
3238 #ifdef CONFIG_SSB_DRIVER_PCICORE
3239 struct ssb_bus *bus = dev->dev->bus;
3240 u32 tmp;
3241
3242 if (bus->pcicore.dev &&
3243 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3244 bus->pcicore.dev->id.revision <= 5) {
3245 /* IMCFGLO timeouts workaround. */
3246 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3247 tmp &= ~SSB_IMCFGLO_REQTO;
3248 tmp &= ~SSB_IMCFGLO_SERTO;
3249 switch (bus->bustype) {
3250 case SSB_BUSTYPE_PCI:
3251 case SSB_BUSTYPE_PCMCIA:
3252 tmp |= 0x32;
3253 break;
3254 case SSB_BUSTYPE_SSB:
3255 tmp |= 0x53;
3256 break;
3257 }
3258 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3259 }
3260 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3261 }
3262
3263 /* Shutdown a wireless core */
3264 /* Locking: wl->mutex */
3265 static void b43_wireless_core_exit(struct b43_wldev *dev)
3266 {
3267 struct b43_phy *phy = &dev->phy;
3268
3269 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3270 if (b43_status(dev) != B43_STAT_INITIALIZED)
3271 return;
3272 b43_set_status(dev, B43_STAT_UNINIT);
3273
3274 mutex_unlock(&dev->wl->mutex);
3275 b43_rfkill_exit(dev);
3276 mutex_lock(&dev->wl->mutex);
3277
3278 b43_rng_exit(dev->wl);
3279 b43_pio_free(dev);
3280 b43_dma_free(dev);
3281 b43_chip_exit(dev);
3282 b43_radio_turn_off(dev, 1);
3283 b43_switch_analog(dev, 0);
3284 if (phy->dyn_tssi_tbl)
3285 kfree(phy->tssi2dbm);
3286 kfree(phy->lo_control);
3287 phy->lo_control = NULL;
3288 ssb_device_disable(dev->dev, 0);
3289 ssb_bus_may_powerdown(dev->dev->bus);
3290 }
3291
3292 /* Initialize a wireless core */
3293 static int b43_wireless_core_init(struct b43_wldev *dev)
3294 {
3295 struct b43_wl *wl = dev->wl;
3296 struct ssb_bus *bus = dev->dev->bus;
3297 struct ssb_sprom *sprom = &bus->sprom;
3298 struct b43_phy *phy = &dev->phy;
3299 int err;
3300 u32 hf, tmp;
3301
3302 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3303
3304 err = ssb_bus_powerup(bus, 0);
3305 if (err)
3306 goto out;
3307 if (!ssb_device_is_enabled(dev->dev)) {
3308 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3309 b43_wireless_core_reset(dev, tmp);
3310 }
3311
3312 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3313 phy->lo_control =
3314 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3315 if (!phy->lo_control) {
3316 err = -ENOMEM;
3317 goto err_busdown;
3318 }
3319 }
3320 setup_struct_wldev_for_init(dev);
3321
3322 err = b43_phy_init_tssi2dbm_table(dev);
3323 if (err)
3324 goto err_kfree_lo_control;
3325
3326 /* Enable IRQ routing to this device. */
3327 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3328
3329 b43_imcfglo_timeouts_workaround(dev);
3330 b43_bluetooth_coext_disable(dev);
3331 b43_phy_early_init(dev);
3332 err = b43_chip_init(dev);
3333 if (err)
3334 goto err_kfree_tssitbl;
3335 b43_shm_write16(dev, B43_SHM_SHARED,
3336 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3337 hf = b43_hf_read(dev);
3338 if (phy->type == B43_PHYTYPE_G) {
3339 hf |= B43_HF_SYMW;
3340 if (phy->rev == 1)
3341 hf |= B43_HF_GDCW;
3342 if (sprom->r1.boardflags_lo & B43_BFL_PACTRL)
3343 hf |= B43_HF_OFDMPABOOST;
3344 } else if (phy->type == B43_PHYTYPE_B) {
3345 hf |= B43_HF_SYMW;
3346 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3347 hf &= ~B43_HF_GDCW;
3348 }
3349 b43_hf_write(dev, hf);
3350
3351 /* Short/Long Retry Limit.
3352 * The retry-limit is a 4-bit counter. Enforce this to avoid overflowing
3353 * the chip-internal counter.
3354 */
3355 tmp = limit_value(modparam_short_retry, 0, 0xF);
3356 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, tmp);
3357 tmp = limit_value(modparam_long_retry, 0, 0xF);
3358 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, tmp);
3359
3360 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3361 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3362
3363 /* Disable sending probe responses from firmware.
3364 * Setting the MaxTime to one usec will always trigger
3365 * a timeout, so we never send any probe resp.
3366 * A timeout of zero is infinite. */
3367 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3368
3369 b43_rate_memory_init(dev);
3370
3371 /* Minimum Contention Window */
3372 if (phy->type == B43_PHYTYPE_B) {
3373 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3374 } else {
3375 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3376 }
3377 /* Maximum Contention Window */
3378 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3379
3380 do {
3381 if (b43_using_pio(dev)) {
3382 err = b43_pio_init(dev);
3383 } else {
3384 err = b43_dma_init(dev);
3385 if (!err)
3386 b43_qos_init(dev);
3387 }
3388 } while (err == -EAGAIN);
3389 if (err)
3390 goto err_chip_exit;
3391
3392 //FIXME
3393 #if 1
3394 b43_write16(dev, 0x0612, 0x0050);
3395 b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
3396 b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
3397 #endif
3398
3399 b43_bluetooth_coext_enable(dev);
3400
3401 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3402 memset(wl->bssid, 0, ETH_ALEN);
3403 memset(wl->mac_addr, 0, ETH_ALEN);
3404 b43_upload_card_macaddress(dev);
3405 b43_security_init(dev);
3406 b43_rfkill_init(dev);
3407 b43_rng_init(wl);
3408
3409 b43_set_status(dev, B43_STAT_INITIALIZED);
3410
3411 out:
3412 return err;
3413
3414 err_chip_exit:
3415 b43_chip_exit(dev);
3416 err_kfree_tssitbl:
3417 if (phy->dyn_tssi_tbl)
3418 kfree(phy->tssi2dbm);
3419 err_kfree_lo_control:
3420 kfree(phy->lo_control);
3421 phy->lo_control = NULL;
3422 err_busdown:
3423 ssb_bus_may_powerdown(bus);
3424 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3425 return err;
3426 }
3427
3428 static int b43_add_interface(struct ieee80211_hw *hw,
3429 struct ieee80211_if_init_conf *conf)
3430 {
3431 struct b43_wl *wl = hw_to_b43_wl(hw);
3432 struct b43_wldev *dev;
3433 unsigned long flags;
3434 int err = -EOPNOTSUPP;
3435
3436 /* TODO: allow WDS/AP devices to coexist */
3437
3438 if (conf->type != IEEE80211_IF_TYPE_AP &&
3439 conf->type != IEEE80211_IF_TYPE_STA &&
3440 conf->type != IEEE80211_IF_TYPE_WDS &&
3441 conf->type != IEEE80211_IF_TYPE_IBSS)
3442 return -EOPNOTSUPP;
3443
3444 mutex_lock(&wl->mutex);
3445 if (wl->operating)
3446 goto out_mutex_unlock;
3447
3448 b43dbg(wl, "Adding Interface type %d\n", conf->type);
3449
3450 dev = wl->current_dev;
3451 wl->operating = 1;
3452 wl->if_id = conf->if_id;
3453 wl->if_type = conf->type;
3454 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3455
3456 spin_lock_irqsave(&wl->irq_lock, flags);
3457 b43_adjust_opmode(dev);
3458 b43_upload_card_macaddress(dev);
3459 spin_unlock_irqrestore(&wl->irq_lock, flags);
3460
3461 err = 0;
3462 out_mutex_unlock:
3463 mutex_unlock(&wl->mutex);
3464
3465 return err;
3466 }
3467
3468 static void b43_remove_interface(struct ieee80211_hw *hw,
3469 struct ieee80211_if_init_conf *conf)
3470 {
3471 struct b43_wl *wl = hw_to_b43_wl(hw);
3472 struct b43_wldev *dev = wl->current_dev;
3473 unsigned long flags;
3474
3475 b43dbg(wl, "Removing Interface type %d\n", conf->type);
3476
3477 mutex_lock(&wl->mutex);
3478
3479 B43_WARN_ON(!wl->operating);
3480 B43_WARN_ON(wl->if_id != conf->if_id);
3481
3482 wl->operating = 0;
3483
3484 spin_lock_irqsave(&wl->irq_lock, flags);
3485 b43_adjust_opmode(dev);
3486 memset(wl->mac_addr, 0, ETH_ALEN);
3487 b43_upload_card_macaddress(dev);
3488 spin_unlock_irqrestore(&wl->irq_lock, flags);
3489
3490 mutex_unlock(&wl->mutex);
3491 }
3492
3493 static int b43_start(struct ieee80211_hw *hw)
3494 {
3495 struct b43_wl *wl = hw_to_b43_wl(hw);
3496 struct b43_wldev *dev = wl->current_dev;
3497 int did_init = 0;
3498 int err;
3499
3500 mutex_lock(&wl->mutex);
3501
3502 if (b43_status(dev) < B43_STAT_INITIALIZED) {
3503 err = b43_wireless_core_init(dev);
3504 if (err)
3505 goto out_mutex_unlock;
3506 did_init = 1;
3507 }
3508
3509 if (b43_status(dev) < B43_STAT_STARTED) {
3510 err = b43_wireless_core_start(dev);
3511 if (err) {
3512 if (did_init)
3513 b43_wireless_core_exit(dev);
3514 goto out_mutex_unlock;
3515 }
3516 }
3517
3518 out_mutex_unlock:
3519 mutex_unlock(&wl->mutex);
3520
3521 return err;
3522 }
3523
3524 void b43_stop(struct ieee80211_hw *hw)
3525 {
3526 struct b43_wl *wl = hw_to_b43_wl(hw);
3527 struct b43_wldev *dev = wl->current_dev;
3528
3529 mutex_lock(&wl->mutex);
3530 if (b43_status(dev) >= B43_STAT_STARTED)
3531 b43_wireless_core_stop(dev);
3532 b43_wireless_core_exit(dev);
3533 mutex_unlock(&wl->mutex);
3534 }
3535
3536 static const struct ieee80211_ops b43_hw_ops = {
3537 .tx = b43_tx,
3538 .conf_tx = b43_conf_tx,
3539 .add_interface = b43_add_interface,
3540 .remove_interface = b43_remove_interface,
3541 .config = b43_dev_config,
3542 .config_interface = b43_config_interface,
3543 .configure_filter = b43_configure_filter,
3544 .set_key = b43_dev_set_key,
3545 .get_stats = b43_get_stats,
3546 .get_tx_stats = b43_get_tx_stats,
3547 .start = b43_start,
3548 .stop = b43_stop,
3549 };
3550
3551 /* Hard-reset the chip. Do not call this directly.
3552 * Use b43_controller_restart()
3553 */
3554 static void b43_chip_reset(struct work_struct *work)
3555 {
3556 struct b43_wldev *dev =
3557 container_of(work, struct b43_wldev, restart_work);
3558 struct b43_wl *wl = dev->wl;
3559 int err = 0;
3560 int prev_status;
3561
3562 mutex_lock(&wl->mutex);
3563
3564 prev_status = b43_status(dev);
3565 /* Bring the device down... */
3566 if (prev_status >= B43_STAT_STARTED)
3567 b43_wireless_core_stop(dev);
3568 if (prev_status >= B43_STAT_INITIALIZED)
3569 b43_wireless_core_exit(dev);
3570
3571 /* ...and up again. */
3572 if (prev_status >= B43_STAT_INITIALIZED) {
3573 err = b43_wireless_core_init(dev);
3574 if (err)
3575 goto out;
3576 }
3577 if (prev_status >= B43_STAT_STARTED) {
3578 err = b43_wireless_core_start(dev);
3579 if (err) {
3580 b43_wireless_core_exit(dev);
3581 goto out;
3582 }
3583 }
3584 out:
3585 mutex_unlock(&wl->mutex);
3586 if (err)
3587 b43err(wl, "Controller restart FAILED\n");
3588 else
3589 b43info(wl, "Controller restarted\n");
3590 }
3591
3592 static int b43_setup_modes(struct b43_wldev *dev,
3593 int have_aphy, int have_bphy, int have_gphy)
3594 {
3595 struct ieee80211_hw *hw = dev->wl->hw;
3596 struct ieee80211_hw_mode *mode;
3597 struct b43_phy *phy = &dev->phy;
3598 int cnt = 0;
3599 int err;
3600
3601 /*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */
3602 have_aphy = 0;
3603
3604 phy->possible_phymodes = 0;
3605 for (; 1; cnt++) {
3606 if (have_aphy) {
3607 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3608 mode = &phy->hwmodes[cnt];
3609
3610 mode->mode = MODE_IEEE80211A;
3611 mode->num_channels = b43_a_chantable_size;
3612 mode->channels = b43_a_chantable;
3613 mode->num_rates = b43_a_ratetable_size;
3614 mode->rates = b43_a_ratetable;
3615 err = ieee80211_register_hwmode(hw, mode);
3616 if (err)
3617 return err;
3618
3619 phy->possible_phymodes |= B43_PHYMODE_A;
3620 have_aphy = 0;
3621 continue;
3622 }
3623 if (have_bphy) {
3624 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3625 mode = &phy->hwmodes[cnt];
3626
3627 mode->mode = MODE_IEEE80211B;
3628 mode->num_channels = b43_bg_chantable_size;
3629 mode->channels = b43_bg_chantable;
3630 mode->num_rates = b43_b_ratetable_size;
3631 mode->rates = b43_b_ratetable;
3632 err = ieee80211_register_hwmode(hw, mode);
3633 if (err)
3634 return err;
3635
3636 phy->possible_phymodes |= B43_PHYMODE_B;
3637 have_bphy = 0;
3638 continue;
3639 }
3640 if (have_gphy) {
3641 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3642 mode = &phy->hwmodes[cnt];
3643
3644 mode->mode = MODE_IEEE80211G;
3645 mode->num_channels = b43_bg_chantable_size;
3646 mode->channels = b43_bg_chantable;
3647 mode->num_rates = b43_g_ratetable_size;
3648 mode->rates = b43_g_ratetable;
3649 err = ieee80211_register_hwmode(hw, mode);
3650 if (err)
3651 return err;
3652
3653 phy->possible_phymodes |= B43_PHYMODE_G;
3654 have_gphy = 0;
3655 continue;
3656 }
3657 break;
3658 }
3659
3660 return 0;
3661 }
3662
3663 static void b43_wireless_core_detach(struct b43_wldev *dev)
3664 {
3665 b43_rfkill_free(dev);
3666 /* We release firmware that late to not be required to re-request
3667 * is all the time when we reinit the core. */
3668 b43_release_firmware(dev);
3669 }
3670
3671 static int b43_wireless_core_attach(struct b43_wldev *dev)
3672 {
3673 struct b43_wl *wl = dev->wl;
3674 struct ssb_bus *bus = dev->dev->bus;
3675 struct pci_dev *pdev = bus->host_pci;
3676 int err;
3677 int have_aphy = 0, have_bphy = 0, have_gphy = 0;
3678 u32 tmp;
3679
3680 /* Do NOT do any device initialization here.
3681 * Do it in wireless_core_init() instead.
3682 * This function is for gathering basic information about the HW, only.
3683 * Also some structs may be set up here. But most likely you want to have
3684 * that in core_init(), too.
3685 */
3686
3687 err = ssb_bus_powerup(bus, 0);
3688 if (err) {
3689 b43err(wl, "Bus powerup failed\n");
3690 goto out;
3691 }
3692 /* Get the PHY type. */
3693 if (dev->dev->id.revision >= 5) {
3694 u32 tmshigh;
3695
3696 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3697 have_aphy = !!(tmshigh & B43_TMSHIGH_APHY);
3698 have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY);
3699 if (!have_aphy && !have_gphy)
3700 have_bphy = 1;
3701 } else if (dev->dev->id.revision == 4) {
3702 have_gphy = 1;
3703 have_aphy = 1;
3704 } else
3705 have_bphy = 1;
3706
3707 dev->phy.gmode = (have_gphy || have_bphy);
3708 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3709 b43_wireless_core_reset(dev, tmp);
3710
3711 err = b43_phy_versioning(dev);
3712 if (err)
3713 goto err_powerdown;
3714 /* Check if this device supports multiband. */
3715 if (!pdev ||
3716 (pdev->device != 0x4312 &&
3717 pdev->device != 0x4319 && pdev->device != 0x4324)) {
3718 /* No multiband support. */
3719 have_aphy = 0;
3720 have_bphy = 0;
3721 have_gphy = 0;
3722 switch (dev->phy.type) {
3723 case B43_PHYTYPE_A:
3724 have_aphy = 1;
3725 break;
3726 case B43_PHYTYPE_B:
3727 have_bphy = 1;
3728 break;
3729 case B43_PHYTYPE_G:
3730 have_gphy = 1;
3731 break;
3732 default:
3733 B43_WARN_ON(1);
3734 }
3735 }
3736 dev->phy.gmode = (have_gphy || have_bphy);
3737 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3738 b43_wireless_core_reset(dev, tmp);
3739
3740 err = b43_validate_chipaccess(dev);
3741 if (err)
3742 goto err_powerdown;
3743 err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy);
3744 if (err)
3745 goto err_powerdown;
3746
3747 /* Now set some default "current_dev" */
3748 if (!wl->current_dev)
3749 wl->current_dev = dev;
3750 INIT_WORK(&dev->restart_work, b43_chip_reset);
3751 b43_rfkill_alloc(dev);
3752
3753 b43_radio_turn_off(dev, 1);
3754 b43_switch_analog(dev, 0);
3755 ssb_device_disable(dev->dev, 0);
3756 ssb_bus_may_powerdown(bus);
3757
3758 out:
3759 return err;
3760
3761 err_powerdown:
3762 ssb_bus_may_powerdown(bus);
3763 return err;
3764 }
3765
3766 static void b43_one_core_detach(struct ssb_device *dev)
3767 {
3768 struct b43_wldev *wldev;
3769 struct b43_wl *wl;
3770
3771 wldev = ssb_get_drvdata(dev);
3772 wl = wldev->wl;
3773 cancel_work_sync(&wldev->restart_work);
3774 b43_debugfs_remove_device(wldev);
3775 b43_wireless_core_detach(wldev);
3776 list_del(&wldev->list);
3777 wl->nr_devs--;
3778 ssb_set_drvdata(dev, NULL);
3779 kfree(wldev);
3780 }
3781
3782 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
3783 {
3784 struct b43_wldev *wldev;
3785 struct pci_dev *pdev;
3786 int err = -ENOMEM;
3787
3788 if (!list_empty(&wl->devlist)) {
3789 /* We are not the first core on this chip. */
3790 pdev = dev->bus->host_pci;
3791 /* Only special chips support more than one wireless
3792 * core, although some of the other chips have more than
3793 * one wireless core as well. Check for this and
3794 * bail out early.
3795 */
3796 if (!pdev ||
3797 ((pdev->device != 0x4321) &&
3798 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
3799 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
3800 return -ENODEV;
3801 }
3802 }
3803
3804 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3805 if (!wldev)
3806 goto out;
3807
3808 wldev->dev = dev;
3809 wldev->wl = wl;
3810 b43_set_status(wldev, B43_STAT_UNINIT);
3811 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3812 tasklet_init(&wldev->isr_tasklet,
3813 (void (*)(unsigned long))b43_interrupt_tasklet,
3814 (unsigned long)wldev);
3815 if (modparam_pio)
3816 wldev->__using_pio = 1;
3817 INIT_LIST_HEAD(&wldev->list);
3818
3819 err = b43_wireless_core_attach(wldev);
3820 if (err)
3821 goto err_kfree_wldev;
3822
3823 list_add(&wldev->list, &wl->devlist);
3824 wl->nr_devs++;
3825 ssb_set_drvdata(dev, wldev);
3826 b43_debugfs_add_device(wldev);
3827
3828 out:
3829 return err;
3830
3831 err_kfree_wldev:
3832 kfree(wldev);
3833 return err;
3834 }
3835
3836 static void b43_sprom_fixup(struct ssb_bus *bus)
3837 {
3838 /* boardflags workarounds */
3839 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
3840 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
3841 bus->sprom.r1.boardflags_lo |= B43_BFL_BTCOEXIST;
3842 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3843 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
3844 bus->sprom.r1.boardflags_lo |= B43_BFL_PACTRL;
3845
3846 /* Handle case when gain is not set in sprom */
3847 if (bus->sprom.r1.antenna_gain_a == 0xFF)
3848 bus->sprom.r1.antenna_gain_a = 2;
3849 if (bus->sprom.r1.antenna_gain_bg == 0xFF)
3850 bus->sprom.r1.antenna_gain_bg = 2;
3851
3852 /* Convert Antennagain values to Q5.2 */
3853 bus->sprom.r1.antenna_gain_a <<= 2;
3854 bus->sprom.r1.antenna_gain_bg <<= 2;
3855 }
3856
3857 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
3858 {
3859 struct ieee80211_hw *hw = wl->hw;
3860
3861 ssb_set_devtypedata(dev, NULL);
3862 ieee80211_free_hw(hw);
3863 }
3864
3865 static int b43_wireless_init(struct ssb_device *dev)
3866 {
3867 struct ssb_sprom *sprom = &dev->bus->sprom;
3868 struct ieee80211_hw *hw;
3869 struct b43_wl *wl;
3870 int err = -ENOMEM;
3871
3872 b43_sprom_fixup(dev->bus);
3873
3874 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
3875 if (!hw) {
3876 b43err(NULL, "Could not allocate ieee80211 device\n");
3877 goto out;
3878 }
3879
3880 /* fill hw info */
3881 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
3882 hw->max_signal = 100;
3883 hw->max_rssi = -110;
3884 hw->max_noise = -110;
3885 hw->queues = 1; /* FIXME: hardware has more queues */
3886 SET_IEEE80211_DEV(hw, dev->dev);
3887 if (is_valid_ether_addr(sprom->r1.et1mac))
3888 SET_IEEE80211_PERM_ADDR(hw, sprom->r1.et1mac);
3889 else
3890 SET_IEEE80211_PERM_ADDR(hw, sprom->r1.il0mac);
3891
3892 /* Get and initialize struct b43_wl */
3893 wl = hw_to_b43_wl(hw);
3894 memset(wl, 0, sizeof(*wl));
3895 wl->hw = hw;
3896 spin_lock_init(&wl->irq_lock);
3897 spin_lock_init(&wl->leds_lock);
3898 mutex_init(&wl->mutex);
3899 INIT_LIST_HEAD(&wl->devlist);
3900
3901 ssb_set_devtypedata(dev, wl);
3902 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
3903 err = 0;
3904 out:
3905 return err;
3906 }
3907
3908 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
3909 {
3910 struct b43_wl *wl;
3911 int err;
3912 int first = 0;
3913
3914 wl = ssb_get_devtypedata(dev);
3915 if (!wl) {
3916 /* Probing the first core. Must setup common struct b43_wl */
3917 first = 1;
3918 err = b43_wireless_init(dev);
3919 if (err)
3920 goto out;
3921 wl = ssb_get_devtypedata(dev);
3922 B43_WARN_ON(!wl);
3923 }
3924 err = b43_one_core_attach(dev, wl);
3925 if (err)
3926 goto err_wireless_exit;
3927
3928 if (first) {
3929 err = ieee80211_register_hw(wl->hw);
3930 if (err)
3931 goto err_one_core_detach;
3932 }
3933
3934 out:
3935 return err;
3936
3937 err_one_core_detach:
3938 b43_one_core_detach(dev);
3939 err_wireless_exit:
3940 if (first)
3941 b43_wireless_exit(dev, wl);
3942 return err;
3943 }
3944
3945 static void b43_remove(struct ssb_device *dev)
3946 {
3947 struct b43_wl *wl = ssb_get_devtypedata(dev);
3948 struct b43_wldev *wldev = ssb_get_drvdata(dev);
3949
3950 B43_WARN_ON(!wl);
3951 if (wl->current_dev == wldev)
3952 ieee80211_unregister_hw(wl->hw);
3953
3954 b43_one_core_detach(dev);
3955
3956 if (list_empty(&wl->devlist)) {
3957 /* Last core on the chip unregistered.
3958 * We can destroy common struct b43_wl.
3959 */
3960 b43_wireless_exit(dev, wl);
3961 }
3962 }
3963
3964 /* Perform a hardware reset. This can be called from any context. */
3965 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
3966 {
3967 /* Must avoid requeueing, if we are in shutdown. */
3968 if (b43_status(dev) < B43_STAT_INITIALIZED)
3969 return;
3970 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
3971 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
3972 }
3973
3974 #ifdef CONFIG_PM
3975
3976 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
3977 {
3978 struct b43_wldev *wldev = ssb_get_drvdata(dev);
3979 struct b43_wl *wl = wldev->wl;
3980
3981 b43dbg(wl, "Suspending...\n");
3982
3983 mutex_lock(&wl->mutex);
3984 wldev->suspend_init_status = b43_status(wldev);
3985 if (wldev->suspend_init_status >= B43_STAT_STARTED)
3986 b43_wireless_core_stop(wldev);
3987 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
3988 b43_wireless_core_exit(wldev);
3989 mutex_unlock(&wl->mutex);
3990
3991 b43dbg(wl, "Device suspended.\n");
3992
3993 return 0;
3994 }
3995
3996 static int b43_resume(struct ssb_device *dev)
3997 {
3998 struct b43_wldev *wldev = ssb_get_drvdata(dev);
3999 struct b43_wl *wl = wldev->wl;
4000 int err = 0;
4001
4002 b43dbg(wl, "Resuming...\n");
4003
4004 mutex_lock(&wl->mutex);
4005 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4006 err = b43_wireless_core_init(wldev);
4007 if (err) {
4008 b43err(wl, "Resume failed at core init\n");
4009 goto out;
4010 }
4011 }
4012 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4013 err = b43_wireless_core_start(wldev);
4014 if (err) {
4015 b43_wireless_core_exit(wldev);
4016 b43err(wl, "Resume failed at core start\n");
4017 goto out;
4018 }
4019 }
4020 mutex_unlock(&wl->mutex);
4021
4022 b43dbg(wl, "Device resumed.\n");
4023 out:
4024 return err;
4025 }
4026
4027 #else /* CONFIG_PM */
4028 # define b43_suspend NULL
4029 # define b43_resume NULL
4030 #endif /* CONFIG_PM */
4031
4032 static struct ssb_driver b43_ssb_driver = {
4033 .name = KBUILD_MODNAME,
4034 .id_table = b43_ssb_tbl,
4035 .probe = b43_probe,
4036 .remove = b43_remove,
4037 .suspend = b43_suspend,
4038 .resume = b43_resume,
4039 };
4040
4041 static int __init b43_init(void)
4042 {
4043 int err;
4044
4045 b43_debugfs_init();
4046 err = b43_pcmcia_init();
4047 if (err)
4048 goto err_dfs_exit;
4049 err = ssb_driver_register(&b43_ssb_driver);
4050 if (err)
4051 goto err_pcmcia_exit;
4052
4053 return err;
4054
4055 err_pcmcia_exit:
4056 b43_pcmcia_exit();
4057 err_dfs_exit:
4058 b43_debugfs_exit();
4059 return err;
4060 }
4061
4062 static void __exit b43_exit(void)
4063 {
4064 ssb_driver_unregister(&b43_ssb_driver);
4065 b43_pcmcia_exit();
4066 b43_debugfs_exit();
4067 }
4068
4069 module_init(b43_init)
4070 module_exit(b43_exit)
Linux kernel - Deliverables
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