?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
b43: Changes to enable BCM4311 rev 02 with wireless core revision 13
[firewire-audio.git] / drivers / net / wireless / b43 / main.c
blob064cbe118882571558a73713d64b61d9751f29e4
1 /*
2
3 Broadcom B43 wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
7 Copyright (c) 2005, 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 "lo.h"
53 #include "pcmcia.h"
54
55 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
56 MODULE_AUTHOR("Martin Langer");
57 MODULE_AUTHOR("Stefano Brivio");
58 MODULE_AUTHOR("Michael Buesch");
59 MODULE_LICENSE("GPL");
60
61 extern char *nvram_get(char *name);
62
63 #if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO)
64 static int modparam_pio;
65 module_param_named(pio, modparam_pio, int, 0444);
66 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
67 #elif defined(CONFIG_B43_DMA)
68 # define modparam_pio 0
69 #elif defined(CONFIG_B43_PIO)
70 # define modparam_pio 1
71 #endif
72
73 static int modparam_bad_frames_preempt;
74 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
75 MODULE_PARM_DESC(bad_frames_preempt,
76 "enable(1) / disable(0) Bad Frames Preemption");
77
78 static char modparam_fwpostfix[16];
79 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
80 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
81
82 static int modparam_hwpctl;
83 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
84 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
85
86 static int modparam_nohwcrypt;
87 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
88 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
89
90 static const struct ssb_device_id b43_ssb_tbl[] = {
91 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
92 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
93 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
94 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
95 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
96 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
97 SSB_DEVTABLE_END
98 };
99
100 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
101
102 /* Channel and ratetables are shared for all devices.
103 * They can't be const, because ieee80211 puts some precalculated
104 * data in there. This data is the same for all devices, so we don't
105 * get concurrency issues */
106 #define RATETAB_ENT(_rateid, _flags) \
107 { \
108 .rate = B43_RATE_TO_BASE100KBPS(_rateid), \
109 .val = (_rateid), \
110 .val2 = (_rateid), \
111 .flags = (_flags), \
112 }
113 static struct ieee80211_rate __b43_ratetable[] = {
114 RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK),
115 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2),
116 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2),
117 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2),
118 RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM),
119 RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM),
120 RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM),
121 RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM),
122 RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM),
123 RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM),
124 RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM),
125 RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM),
126 };
127
128 #define b43_a_ratetable (__b43_ratetable + 4)
129 #define b43_a_ratetable_size 8
130 #define b43_b_ratetable (__b43_ratetable + 0)
131 #define b43_b_ratetable_size 4
132 #define b43_g_ratetable (__b43_ratetable + 0)
133 #define b43_g_ratetable_size 12
134
135 #define CHANTAB_ENT(_chanid, _freq) \
136 { \
137 .chan = (_chanid), \
138 .freq = (_freq), \
139 .val = (_chanid), \
140 .flag = IEEE80211_CHAN_W_SCAN | \
141 IEEE80211_CHAN_W_ACTIVE_SCAN | \
142 IEEE80211_CHAN_W_IBSS, \
143 .power_level = 0xFF, \
144 .antenna_max = 0xFF, \
145 }
146 static struct ieee80211_channel b43_bg_chantable[] = {
147 CHANTAB_ENT(1, 2412),
148 CHANTAB_ENT(2, 2417),
149 CHANTAB_ENT(3, 2422),
150 CHANTAB_ENT(4, 2427),
151 CHANTAB_ENT(5, 2432),
152 CHANTAB_ENT(6, 2437),
153 CHANTAB_ENT(7, 2442),
154 CHANTAB_ENT(8, 2447),
155 CHANTAB_ENT(9, 2452),
156 CHANTAB_ENT(10, 2457),
157 CHANTAB_ENT(11, 2462),
158 CHANTAB_ENT(12, 2467),
159 CHANTAB_ENT(13, 2472),
160 CHANTAB_ENT(14, 2484),
161 };
162
163 #define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable)
164 static struct ieee80211_channel b43_a_chantable[] = {
165 CHANTAB_ENT(36, 5180),
166 CHANTAB_ENT(40, 5200),
167 CHANTAB_ENT(44, 5220),
168 CHANTAB_ENT(48, 5240),
169 CHANTAB_ENT(52, 5260),
170 CHANTAB_ENT(56, 5280),
171 CHANTAB_ENT(60, 5300),
172 CHANTAB_ENT(64, 5320),
173 CHANTAB_ENT(149, 5745),
174 CHANTAB_ENT(153, 5765),
175 CHANTAB_ENT(157, 5785),
176 CHANTAB_ENT(161, 5805),
177 CHANTAB_ENT(165, 5825),
178 };
179
180 #define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable)
181
182 static void b43_wireless_core_exit(struct b43_wldev *dev);
183 static int b43_wireless_core_init(struct b43_wldev *dev);
184 static void b43_wireless_core_stop(struct b43_wldev *dev);
185 static int b43_wireless_core_start(struct b43_wldev *dev);
186
187 static int b43_ratelimit(struct b43_wl *wl)
188 {
189 if (!wl || !wl->current_dev)
190 return 1;
191 if (b43_status(wl->current_dev) < B43_STAT_STARTED)
192 return 1;
193 /* We are up and running.
194 * Ratelimit the messages to avoid DoS over the net. */
195 return net_ratelimit();
196 }
197
198 void b43info(struct b43_wl *wl, const char *fmt, ...)
199 {
200 va_list args;
201
202 if (!b43_ratelimit(wl))
203 return;
204 va_start(args, fmt);
205 printk(KERN_INFO "b43-%s: ",
206 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
207 vprintk(fmt, args);
208 va_end(args);
209 }
210
211 void b43err(struct b43_wl *wl, const char *fmt, ...)
212 {
213 va_list args;
214
215 if (!b43_ratelimit(wl))
216 return;
217 va_start(args, fmt);
218 printk(KERN_ERR "b43-%s ERROR: ",
219 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
220 vprintk(fmt, args);
221 va_end(args);
222 }
223
224 void b43warn(struct b43_wl *wl, const char *fmt, ...)
225 {
226 va_list args;
227
228 if (!b43_ratelimit(wl))
229 return;
230 va_start(args, fmt);
231 printk(KERN_WARNING "b43-%s warning: ",
232 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
233 vprintk(fmt, args);
234 va_end(args);
235 }
236
237 #if B43_DEBUG
238 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
239 {
240 va_list args;
241
242 va_start(args, fmt);
243 printk(KERN_DEBUG "b43-%s debug: ",
244 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
245 vprintk(fmt, args);
246 va_end(args);
247 }
248 #endif /* DEBUG */
249
250 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
251 {
252 u32 macctl;
253
254 B43_WARN_ON(offset % 4 != 0);
255
256 macctl = b43_read32(dev, B43_MMIO_MACCTL);
257 if (macctl & B43_MACCTL_BE)
258 val = swab32(val);
259
260 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
261 mmiowb();
262 b43_write32(dev, B43_MMIO_RAM_DATA, val);
263 }
264
265 static inline
266 void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset)
267 {
268 u32 control;
269
270 /* "offset" is the WORD offset. */
271
272 control = routing;
273 control <<= 16;
274 control |= offset;
275 b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
276 }
277
278 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
279 {
280 u32 ret;
281
282 if (routing == B43_SHM_SHARED) {
283 B43_WARN_ON(offset & 0x0001);
284 if (offset & 0x0003) {
285 /* Unaligned access */
286 b43_shm_control_word(dev, routing, offset >> 2);
287 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
288 ret <<= 16;
289 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
290 ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
291
292 return ret;
293 }
294 offset >>= 2;
295 }
296 b43_shm_control_word(dev, routing, offset);
297 ret = b43_read32(dev, B43_MMIO_SHM_DATA);
298
299 return ret;
300 }
301
302 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
303 {
304 u16 ret;
305
306 if (routing == B43_SHM_SHARED) {
307 B43_WARN_ON(offset & 0x0001);
308 if (offset & 0x0003) {
309 /* Unaligned access */
310 b43_shm_control_word(dev, routing, offset >> 2);
311 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
312
313 return ret;
314 }
315 offset >>= 2;
316 }
317 b43_shm_control_word(dev, routing, offset);
318 ret = b43_read16(dev, B43_MMIO_SHM_DATA);
319
320 return ret;
321 }
322
323 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
324 {
325 if (routing == B43_SHM_SHARED) {
326 B43_WARN_ON(offset & 0x0001);
327 if (offset & 0x0003) {
328 /* Unaligned access */
329 b43_shm_control_word(dev, routing, offset >> 2);
330 mmiowb();
331 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
332 (value >> 16) & 0xffff);
333 mmiowb();
334 b43_shm_control_word(dev, routing, (offset >> 2) + 1);
335 mmiowb();
336 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
337 return;
338 }
339 offset >>= 2;
340 }
341 b43_shm_control_word(dev, routing, offset);
342 mmiowb();
343 b43_write32(dev, B43_MMIO_SHM_DATA, value);
344 }
345
346 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
347 {
348 if (routing == B43_SHM_SHARED) {
349 B43_WARN_ON(offset & 0x0001);
350 if (offset & 0x0003) {
351 /* Unaligned access */
352 b43_shm_control_word(dev, routing, offset >> 2);
353 mmiowb();
354 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
355 return;
356 }
357 offset >>= 2;
358 }
359 b43_shm_control_word(dev, routing, offset);
360 mmiowb();
361 b43_write16(dev, B43_MMIO_SHM_DATA, value);
362 }
363
364 /* Read HostFlags */
365 u32 b43_hf_read(struct b43_wldev * dev)
366 {
367 u32 ret;
368
369 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
370 ret <<= 16;
371 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
372
373 return ret;
374 }
375
376 /* Write HostFlags */
377 void b43_hf_write(struct b43_wldev *dev, u32 value)
378 {
379 b43_shm_write16(dev, B43_SHM_SHARED,
380 B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
381 b43_shm_write16(dev, B43_SHM_SHARED,
382 B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
383 }
384
385 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
386 {
387 /* We need to be careful. As we read the TSF from multiple
388 * registers, we should take care of register overflows.
389 * In theory, the whole tsf read process should be atomic.
390 * We try to be atomic here, by restaring the read process,
391 * if any of the high registers changed (overflew).
392 */
393 if (dev->dev->id.revision >= 3) {
394 u32 low, high, high2;
395
396 do {
397 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
398 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
399 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
400 } while (unlikely(high != high2));
401
402 *tsf = high;
403 *tsf <<= 32;
404 *tsf |= low;
405 } else {
406 u64 tmp;
407 u16 v0, v1, v2, v3;
408 u16 test1, test2, test3;
409
410 do {
411 v3 = b43_read16(dev, B43_MMIO_TSF_3);
412 v2 = b43_read16(dev, B43_MMIO_TSF_2);
413 v1 = b43_read16(dev, B43_MMIO_TSF_1);
414 v0 = b43_read16(dev, B43_MMIO_TSF_0);
415
416 test3 = b43_read16(dev, B43_MMIO_TSF_3);
417 test2 = b43_read16(dev, B43_MMIO_TSF_2);
418 test1 = b43_read16(dev, B43_MMIO_TSF_1);
419 } while (v3 != test3 || v2 != test2 || v1 != test1);
420
421 *tsf = v3;
422 *tsf <<= 48;
423 tmp = v2;
424 tmp <<= 32;
425 *tsf |= tmp;
426 tmp = v1;
427 tmp <<= 16;
428 *tsf |= tmp;
429 *tsf |= v0;
430 }
431 }
432
433 static void b43_time_lock(struct b43_wldev *dev)
434 {
435 u32 macctl;
436
437 macctl = b43_read32(dev, B43_MMIO_MACCTL);
438 macctl |= B43_MACCTL_TBTTHOLD;
439 b43_write32(dev, B43_MMIO_MACCTL, macctl);
440 /* Commit the write */
441 b43_read32(dev, B43_MMIO_MACCTL);
442 }
443
444 static void b43_time_unlock(struct b43_wldev *dev)
445 {
446 u32 macctl;
447
448 macctl = b43_read32(dev, B43_MMIO_MACCTL);
449 macctl &= ~B43_MACCTL_TBTTHOLD;
450 b43_write32(dev, B43_MMIO_MACCTL, macctl);
451 /* Commit the write */
452 b43_read32(dev, B43_MMIO_MACCTL);
453 }
454
455 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
456 {
457 /* Be careful with the in-progress timer.
458 * First zero out the low register, so we have a full
459 * register-overflow duration to complete the operation.
460 */
461 if (dev->dev->id.revision >= 3) {
462 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
463 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
464
465 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
466 mmiowb();
467 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
468 mmiowb();
469 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
470 } else {
471 u16 v0 = (tsf & 0x000000000000FFFFULL);
472 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
473 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
474 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
475
476 b43_write16(dev, B43_MMIO_TSF_0, 0);
477 mmiowb();
478 b43_write16(dev, B43_MMIO_TSF_3, v3);
479 mmiowb();
480 b43_write16(dev, B43_MMIO_TSF_2, v2);
481 mmiowb();
482 b43_write16(dev, B43_MMIO_TSF_1, v1);
483 mmiowb();
484 b43_write16(dev, B43_MMIO_TSF_0, v0);
485 }
486 }
487
488 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
489 {
490 b43_time_lock(dev);
491 b43_tsf_write_locked(dev, tsf);
492 b43_time_unlock(dev);
493 }
494
495 static
496 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
497 {
498 static const u8 zero_addr[ETH_ALEN] = { 0 };
499 u16 data;
500
501 if (!mac)
502 mac = zero_addr;
503
504 offset |= 0x0020;
505 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
506
507 data = mac[0];
508 data |= mac[1] << 8;
509 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
510 data = mac[2];
511 data |= mac[3] << 8;
512 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
513 data = mac[4];
514 data |= mac[5] << 8;
515 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
516 }
517
518 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
519 {
520 const u8 *mac;
521 const u8 *bssid;
522 u8 mac_bssid[ETH_ALEN * 2];
523 int i;
524 u32 tmp;
525
526 bssid = dev->wl->bssid;
527 mac = dev->wl->mac_addr;
528
529 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
530
531 memcpy(mac_bssid, mac, ETH_ALEN);
532 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
533
534 /* Write our MAC address and BSSID to template ram */
535 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
536 tmp = (u32) (mac_bssid[i + 0]);
537 tmp |= (u32) (mac_bssid[i + 1]) << 8;
538 tmp |= (u32) (mac_bssid[i + 2]) << 16;
539 tmp |= (u32) (mac_bssid[i + 3]) << 24;
540 b43_ram_write(dev, 0x20 + i, tmp);
541 }
542 }
543
544 static void b43_upload_card_macaddress(struct b43_wldev *dev)
545 {
546 b43_write_mac_bssid_templates(dev);
547 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
548 }
549
550 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
551 {
552 /* slot_time is in usec. */
553 if (dev->phy.type != B43_PHYTYPE_G)
554 return;
555 b43_write16(dev, 0x684, 510 + slot_time);
556 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
557 }
558
559 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
560 {
561 b43_set_slot_time(dev, 9);
562 dev->short_slot = 1;
563 }
564
565 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
566 {
567 b43_set_slot_time(dev, 20);
568 dev->short_slot = 0;
569 }
570
571 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
572 * Returns the _previously_ enabled IRQ mask.
573 */
574 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
575 {
576 u32 old_mask;
577
578 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
579 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
580
581 return old_mask;
582 }
583
584 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
585 * Returns the _previously_ enabled IRQ mask.
586 */
587 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
588 {
589 u32 old_mask;
590
591 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
592 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
593
594 return old_mask;
595 }
596
597 /* Synchronize IRQ top- and bottom-half.
598 * IRQs must be masked before calling this.
599 * This must not be called with the irq_lock held.
600 */
601 static void b43_synchronize_irq(struct b43_wldev *dev)
602 {
603 synchronize_irq(dev->dev->irq);
604 tasklet_kill(&dev->isr_tasklet);
605 }
606
607 /* DummyTransmission function, as documented on
608 * http://bcm-specs.sipsolutions.net/DummyTransmission
609 */
610 void b43_dummy_transmission(struct b43_wldev *dev)
611 {
612 struct b43_phy *phy = &dev->phy;
613 unsigned int i, max_loop;
614 u16 value;
615 u32 buffer[5] = {
616 0x00000000,
617 0x00D40000,
618 0x00000000,
619 0x01000000,
620 0x00000000,
621 };
622
623 switch (phy->type) {
624 case B43_PHYTYPE_A:
625 max_loop = 0x1E;
626 buffer[0] = 0x000201CC;
627 break;
628 case B43_PHYTYPE_B:
629 case B43_PHYTYPE_G:
630 max_loop = 0xFA;
631 buffer[0] = 0x000B846E;
632 break;
633 default:
634 B43_WARN_ON(1);
635 return;
636 }
637
638 for (i = 0; i < 5; i++)
639 b43_ram_write(dev, i * 4, buffer[i]);
640
641 /* Commit writes */
642 b43_read32(dev, B43_MMIO_MACCTL);
643
644 b43_write16(dev, 0x0568, 0x0000);
645 b43_write16(dev, 0x07C0, 0x0000);
646 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
647 b43_write16(dev, 0x050C, value);
648 b43_write16(dev, 0x0508, 0x0000);
649 b43_write16(dev, 0x050A, 0x0000);
650 b43_write16(dev, 0x054C, 0x0000);
651 b43_write16(dev, 0x056A, 0x0014);
652 b43_write16(dev, 0x0568, 0x0826);
653 b43_write16(dev, 0x0500, 0x0000);
654 b43_write16(dev, 0x0502, 0x0030);
655
656 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
657 b43_radio_write16(dev, 0x0051, 0x0017);
658 for (i = 0x00; i < max_loop; i++) {
659 value = b43_read16(dev, 0x050E);
660 if (value & 0x0080)
661 break;
662 udelay(10);
663 }
664 for (i = 0x00; i < 0x0A; i++) {
665 value = b43_read16(dev, 0x050E);
666 if (value & 0x0400)
667 break;
668 udelay(10);
669 }
670 for (i = 0x00; i < 0x0A; i++) {
671 value = b43_read16(dev, 0x0690);
672 if (!(value & 0x0100))
673 break;
674 udelay(10);
675 }
676 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
677 b43_radio_write16(dev, 0x0051, 0x0037);
678 }
679
680 static void key_write(struct b43_wldev *dev,
681 u8 index, u8 algorithm, const u8 * key)
682 {
683 unsigned int i;
684 u32 offset;
685 u16 value;
686 u16 kidx;
687
688 /* Key index/algo block */
689 kidx = b43_kidx_to_fw(dev, index);
690 value = ((kidx << 4) | algorithm);
691 b43_shm_write16(dev, B43_SHM_SHARED,
692 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
693
694 /* Write the key to the Key Table Pointer offset */
695 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
696 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
697 value = key[i];
698 value |= (u16) (key[i + 1]) << 8;
699 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
700 }
701 }
702
703 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
704 {
705 u32 addrtmp[2] = { 0, 0, };
706 u8 per_sta_keys_start = 8;
707
708 if (b43_new_kidx_api(dev))
709 per_sta_keys_start = 4;
710
711 B43_WARN_ON(index < per_sta_keys_start);
712 /* We have two default TX keys and possibly two default RX keys.
713 * Physical mac 0 is mapped to physical key 4 or 8, depending
714 * on the firmware version.
715 * So we must adjust the index here.
716 */
717 index -= per_sta_keys_start;
718
719 if (addr) {
720 addrtmp[0] = addr[0];
721 addrtmp[0] |= ((u32) (addr[1]) << 8);
722 addrtmp[0] |= ((u32) (addr[2]) << 16);
723 addrtmp[0] |= ((u32) (addr[3]) << 24);
724 addrtmp[1] = addr[4];
725 addrtmp[1] |= ((u32) (addr[5]) << 8);
726 }
727
728 if (dev->dev->id.revision >= 5) {
729 /* Receive match transmitter address mechanism */
730 b43_shm_write32(dev, B43_SHM_RCMTA,
731 (index * 2) + 0, addrtmp[0]);
732 b43_shm_write16(dev, B43_SHM_RCMTA,
733 (index * 2) + 1, addrtmp[1]);
734 } else {
735 /* RXE (Receive Engine) and
736 * PSM (Programmable State Machine) mechanism
737 */
738 if (index < 8) {
739 /* TODO write to RCM 16, 19, 22 and 25 */
740 } else {
741 b43_shm_write32(dev, B43_SHM_SHARED,
742 B43_SHM_SH_PSM + (index * 6) + 0,
743 addrtmp[0]);
744 b43_shm_write16(dev, B43_SHM_SHARED,
745 B43_SHM_SH_PSM + (index * 6) + 4,
746 addrtmp[1]);
747 }
748 }
749 }
750
751 static void do_key_write(struct b43_wldev *dev,
752 u8 index, u8 algorithm,
753 const u8 * key, size_t key_len, const u8 * mac_addr)
754 {
755 u8 buf[B43_SEC_KEYSIZE] = { 0, };
756 u8 per_sta_keys_start = 8;
757
758 if (b43_new_kidx_api(dev))
759 per_sta_keys_start = 4;
760
761 B43_WARN_ON(index >= dev->max_nr_keys);
762 B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
763
764 if (index >= per_sta_keys_start)
765 keymac_write(dev, index, NULL); /* First zero out mac. */
766 if (key)
767 memcpy(buf, key, key_len);
768 key_write(dev, index, algorithm, buf);
769 if (index >= per_sta_keys_start)
770 keymac_write(dev, index, mac_addr);
771
772 dev->key[index].algorithm = algorithm;
773 }
774
775 static int b43_key_write(struct b43_wldev *dev,
776 int index, u8 algorithm,
777 const u8 * key, size_t key_len,
778 const u8 * mac_addr,
779 struct ieee80211_key_conf *keyconf)
780 {
781 int i;
782 int sta_keys_start;
783
784 if (key_len > B43_SEC_KEYSIZE)
785 return -EINVAL;
786 for (i = 0; i < dev->max_nr_keys; i++) {
787 /* Check that we don't already have this key. */
788 B43_WARN_ON(dev->key[i].keyconf == keyconf);
789 }
790 if (index < 0) {
791 /* Either pairwise key or address is 00:00:00:00:00:00
792 * for transmit-only keys. Search the index. */
793 if (b43_new_kidx_api(dev))
794 sta_keys_start = 4;
795 else
796 sta_keys_start = 8;
797 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
798 if (!dev->key[i].keyconf) {
799 /* found empty */
800 index = i;
801 break;
802 }
803 }
804 if (index < 0) {
805 b43err(dev->wl, "Out of hardware key memory\n");
806 return -ENOSPC;
807 }
808 } else
809 B43_WARN_ON(index > 3);
810
811 do_key_write(dev, index, algorithm, key, key_len, mac_addr);
812 if ((index <= 3) && !b43_new_kidx_api(dev)) {
813 /* Default RX key */
814 B43_WARN_ON(mac_addr);
815 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
816 }
817 keyconf->hw_key_idx = index;
818 dev->key[index].keyconf = keyconf;
819
820 return 0;
821 }
822
823 static int b43_key_clear(struct b43_wldev *dev, int index)
824 {
825 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
826 return -EINVAL;
827 do_key_write(dev, index, B43_SEC_ALGO_NONE,
828 NULL, B43_SEC_KEYSIZE, NULL);
829 if ((index <= 3) && !b43_new_kidx_api(dev)) {
830 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
831 NULL, B43_SEC_KEYSIZE, NULL);
832 }
833 dev->key[index].keyconf = NULL;
834
835 return 0;
836 }
837
838 static void b43_clear_keys(struct b43_wldev *dev)
839 {
840 int i;
841
842 for (i = 0; i < dev->max_nr_keys; i++)
843 b43_key_clear(dev, i);
844 }
845
846 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
847 {
848 u32 macctl;
849 u16 ucstat;
850 bool hwps;
851 bool awake;
852 int i;
853
854 B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
855 (ps_flags & B43_PS_DISABLED));
856 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
857
858 if (ps_flags & B43_PS_ENABLED) {
859 hwps = 1;
860 } else if (ps_flags & B43_PS_DISABLED) {
861 hwps = 0;
862 } else {
863 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
864 // and thus is not an AP and we are associated, set bit 25
865 }
866 if (ps_flags & B43_PS_AWAKE) {
867 awake = 1;
868 } else if (ps_flags & B43_PS_ASLEEP) {
869 awake = 0;
870 } else {
871 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
872 // or we are associated, or FIXME, or the latest PS-Poll packet sent was
873 // successful, set bit26
874 }
875
876 /* FIXME: For now we force awake-on and hwps-off */
877 hwps = 0;
878 awake = 1;
879
880 macctl = b43_read32(dev, B43_MMIO_MACCTL);
881 if (hwps)
882 macctl |= B43_MACCTL_HWPS;
883 else
884 macctl &= ~B43_MACCTL_HWPS;
885 if (awake)
886 macctl |= B43_MACCTL_AWAKE;
887 else
888 macctl &= ~B43_MACCTL_AWAKE;
889 b43_write32(dev, B43_MMIO_MACCTL, macctl);
890 /* Commit write */
891 b43_read32(dev, B43_MMIO_MACCTL);
892 if (awake && dev->dev->id.revision >= 5) {
893 /* Wait for the microcode to wake up. */
894 for (i = 0; i < 100; i++) {
895 ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
896 B43_SHM_SH_UCODESTAT);
897 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
898 break;
899 udelay(10);
900 }
901 }
902 }
903
904 /* Turn the Analog ON/OFF */
905 static void b43_switch_analog(struct b43_wldev *dev, int on)
906 {
907 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
908 }
909
910 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
911 {
912 u32 tmslow;
913 u32 macctl;
914
915 flags |= B43_TMSLOW_PHYCLKEN;
916 flags |= B43_TMSLOW_PHYRESET;
917 ssb_device_enable(dev->dev, flags);
918 msleep(2); /* Wait for the PLL to turn on. */
919
920 /* Now take the PHY out of Reset again */
921 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
922 tmslow |= SSB_TMSLOW_FGC;
923 tmslow &= ~B43_TMSLOW_PHYRESET;
924 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
925 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
926 msleep(1);
927 tmslow &= ~SSB_TMSLOW_FGC;
928 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
929 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
930 msleep(1);
931
932 /* Turn Analog ON */
933 b43_switch_analog(dev, 1);
934
935 macctl = b43_read32(dev, B43_MMIO_MACCTL);
936 macctl &= ~B43_MACCTL_GMODE;
937 if (flags & B43_TMSLOW_GMODE)
938 macctl |= B43_MACCTL_GMODE;
939 macctl |= B43_MACCTL_IHR_ENABLED;
940 b43_write32(dev, B43_MMIO_MACCTL, macctl);
941 }
942
943 static void handle_irq_transmit_status(struct b43_wldev *dev)
944 {
945 u32 v0, v1;
946 u16 tmp;
947 struct b43_txstatus stat;
948
949 while (1) {
950 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
951 if (!(v0 & 0x00000001))
952 break;
953 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
954
955 stat.cookie = (v0 >> 16);
956 stat.seq = (v1 & 0x0000FFFF);
957 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
958 tmp = (v0 & 0x0000FFFF);
959 stat.frame_count = ((tmp & 0xF000) >> 12);
960 stat.rts_count = ((tmp & 0x0F00) >> 8);
961 stat.supp_reason = ((tmp & 0x001C) >> 2);
962 stat.pm_indicated = !!(tmp & 0x0080);
963 stat.intermediate = !!(tmp & 0x0040);
964 stat.for_ampdu = !!(tmp & 0x0020);
965 stat.acked = !!(tmp & 0x0002);
966
967 b43_handle_txstatus(dev, &stat);
968 }
969 }
970
971 static void drain_txstatus_queue(struct b43_wldev *dev)
972 {
973 u32 dummy;
974
975 if (dev->dev->id.revision < 5)
976 return;
977 /* Read all entries from the microcode TXstatus FIFO
978 * and throw them away.
979 */
980 while (1) {
981 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
982 if (!(dummy & 0x00000001))
983 break;
984 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
985 }
986 }
987
988 static u32 b43_jssi_read(struct b43_wldev *dev)
989 {
990 u32 val = 0;
991
992 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
993 val <<= 16;
994 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
995
996 return val;
997 }
998
999 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1000 {
1001 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1002 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1003 }
1004
1005 static void b43_generate_noise_sample(struct b43_wldev *dev)
1006 {
1007 b43_jssi_write(dev, 0x7F7F7F7F);
1008 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1009 b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1010 | (1 << 4));
1011 B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1012 }
1013
1014 static void b43_calculate_link_quality(struct b43_wldev *dev)
1015 {
1016 /* Top half of Link Quality calculation. */
1017
1018 if (dev->noisecalc.calculation_running)
1019 return;
1020 dev->noisecalc.channel_at_start = dev->phy.channel;
1021 dev->noisecalc.calculation_running = 1;
1022 dev->noisecalc.nr_samples = 0;
1023
1024 b43_generate_noise_sample(dev);
1025 }
1026
1027 static void handle_irq_noise(struct b43_wldev *dev)
1028 {
1029 struct b43_phy *phy = &dev->phy;
1030 u16 tmp;
1031 u8 noise[4];
1032 u8 i, j;
1033 s32 average;
1034
1035 /* Bottom half of Link Quality calculation. */
1036
1037 B43_WARN_ON(!dev->noisecalc.calculation_running);
1038 if (dev->noisecalc.channel_at_start != phy->channel)
1039 goto drop_calculation;
1040 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1041 if (noise[0] == 0x7F || noise[1] == 0x7F ||
1042 noise[2] == 0x7F || noise[3] == 0x7F)
1043 goto generate_new;
1044
1045 /* Get the noise samples. */
1046 B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1047 i = dev->noisecalc.nr_samples;
1048 noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1049 noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1050 noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1051 noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1052 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1053 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1054 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1055 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1056 dev->noisecalc.nr_samples++;
1057 if (dev->noisecalc.nr_samples == 8) {
1058 /* Calculate the Link Quality by the noise samples. */
1059 average = 0;
1060 for (i = 0; i < 8; i++) {
1061 for (j = 0; j < 4; j++)
1062 average += dev->noisecalc.samples[i][j];
1063 }
1064 average /= (8 * 4);
1065 average *= 125;
1066 average += 64;
1067 average /= 128;
1068 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1069 tmp = (tmp / 128) & 0x1F;
1070 if (tmp >= 8)
1071 average += 2;
1072 else
1073 average -= 25;
1074 if (tmp == 8)
1075 average -= 72;
1076 else
1077 average -= 48;
1078
1079 dev->stats.link_noise = average;
1080 drop_calculation:
1081 dev->noisecalc.calculation_running = 0;
1082 return;
1083 }
1084 generate_new:
1085 b43_generate_noise_sample(dev);
1086 }
1087
1088 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1089 {
1090 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1091 ///TODO: PS TBTT
1092 } else {
1093 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1094 b43_power_saving_ctl_bits(dev, 0);
1095 }
1096 dev->reg124_set_0x4 = 0;
1097 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1098 dev->reg124_set_0x4 = 1;
1099 }
1100
1101 static void handle_irq_atim_end(struct b43_wldev *dev)
1102 {
1103 if (!dev->reg124_set_0x4 /*FIXME rename this variable */ )
1104 return;
1105 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1106 b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1107 | 0x4);
1108 }
1109
1110 static void handle_irq_pmq(struct b43_wldev *dev)
1111 {
1112 u32 tmp;
1113
1114 //TODO: AP mode.
1115
1116 while (1) {
1117 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1118 if (!(tmp & 0x00000008))
1119 break;
1120 }
1121 /* 16bit write is odd, but correct. */
1122 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1123 }
1124
1125 static void b43_write_template_common(struct b43_wldev *dev,
1126 const u8 * data, u16 size,
1127 u16 ram_offset,
1128 u16 shm_size_offset, u8 rate)
1129 {
1130 u32 i, tmp;
1131 struct b43_plcp_hdr4 plcp;
1132
1133 plcp.data = 0;
1134 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1135 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1136 ram_offset += sizeof(u32);
1137 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1138 * So leave the first two bytes of the next write blank.
1139 */
1140 tmp = (u32) (data[0]) << 16;
1141 tmp |= (u32) (data[1]) << 24;
1142 b43_ram_write(dev, ram_offset, tmp);
1143 ram_offset += sizeof(u32);
1144 for (i = 2; i < size; i += sizeof(u32)) {
1145 tmp = (u32) (data[i + 0]);
1146 if (i + 1 < size)
1147 tmp |= (u32) (data[i + 1]) << 8;
1148 if (i + 2 < size)
1149 tmp |= (u32) (data[i + 2]) << 16;
1150 if (i + 3 < size)
1151 tmp |= (u32) (data[i + 3]) << 24;
1152 b43_ram_write(dev, ram_offset + i - 2, tmp);
1153 }
1154 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1155 size + sizeof(struct b43_plcp_hdr6));
1156 }
1157
1158 static void b43_write_beacon_template(struct b43_wldev *dev,
1159 u16 ram_offset,
1160 u16 shm_size_offset, u8 rate)
1161 {
1162 int len;
1163 const u8 *data;
1164
1165 B43_WARN_ON(!dev->cached_beacon);
1166 len = min((size_t) dev->cached_beacon->len,
1167 0x200 - sizeof(struct b43_plcp_hdr6));
1168 data = (const u8 *)(dev->cached_beacon->data);
1169 b43_write_template_common(dev, data,
1170 len, ram_offset, shm_size_offset, rate);
1171 }
1172
1173 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1174 u16 shm_offset, u16 size, u8 rate)
1175 {
1176 struct b43_plcp_hdr4 plcp;
1177 u32 tmp;
1178 __le16 dur;
1179
1180 plcp.data = 0;
1181 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1182 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1183 dev->wl->if_id, size,
1184 B43_RATE_TO_BASE100KBPS(rate));
1185 /* Write PLCP in two parts and timing for packet transfer */
1186 tmp = le32_to_cpu(plcp.data);
1187 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1188 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1189 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1190 }
1191
1192 /* Instead of using custom probe response template, this function
1193 * just patches custom beacon template by:
1194 * 1) Changing packet type
1195 * 2) Patching duration field
1196 * 3) Stripping TIM
1197 */
1198 static u8 *b43_generate_probe_resp(struct b43_wldev *dev,
1199 u16 * dest_size, u8 rate)
1200 {
1201 const u8 *src_data;
1202 u8 *dest_data;
1203 u16 src_size, elem_size, src_pos, dest_pos;
1204 __le16 dur;
1205 struct ieee80211_hdr *hdr;
1206
1207 B43_WARN_ON(!dev->cached_beacon);
1208 src_size = dev->cached_beacon->len;
1209 src_data = (const u8 *)dev->cached_beacon->data;
1210
1211 if (unlikely(src_size < 0x24)) {
1212 b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n");
1213 return NULL;
1214 }
1215
1216 dest_data = kmalloc(src_size, GFP_ATOMIC);
1217 if (unlikely(!dest_data))
1218 return NULL;
1219
1220 /* 0x24 is offset of first variable-len Information-Element
1221 * in beacon frame.
1222 */
1223 memcpy(dest_data, src_data, 0x24);
1224 src_pos = dest_pos = 0x24;
1225 for (; src_pos < src_size - 2; src_pos += elem_size) {
1226 elem_size = src_data[src_pos + 1] + 2;
1227 if (src_data[src_pos] != 0x05) { /* TIM */
1228 memcpy(dest_data + dest_pos, src_data + src_pos,
1229 elem_size);
1230 dest_pos += elem_size;
1231 }
1232 }
1233 *dest_size = dest_pos;
1234 hdr = (struct ieee80211_hdr *)dest_data;
1235
1236 /* Set the frame control. */
1237 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1238 IEEE80211_STYPE_PROBE_RESP);
1239 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1240 dev->wl->if_id, *dest_size,
1241 B43_RATE_TO_BASE100KBPS(rate));
1242 hdr->duration_id = dur;
1243
1244 return dest_data;
1245 }
1246
1247 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1248 u16 ram_offset,
1249 u16 shm_size_offset, u8 rate)
1250 {
1251 u8 *probe_resp_data;
1252 u16 size;
1253
1254 B43_WARN_ON(!dev->cached_beacon);
1255 size = dev->cached_beacon->len;
1256 probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1257 if (unlikely(!probe_resp_data))
1258 return;
1259
1260 /* Looks like PLCP headers plus packet timings are stored for
1261 * all possible basic rates
1262 */
1263 b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB);
1264 b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB);
1265 b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB);
1266 b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB);
1267
1268 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1269 b43_write_template_common(dev, probe_resp_data,
1270 size, ram_offset, shm_size_offset, rate);
1271 kfree(probe_resp_data);
1272 }
1273
1274 static int b43_refresh_cached_beacon(struct b43_wldev *dev,
1275 struct sk_buff *beacon)
1276 {
1277 if (dev->cached_beacon)
1278 kfree_skb(dev->cached_beacon);
1279 dev->cached_beacon = beacon;
1280
1281 return 0;
1282 }
1283
1284 static void b43_update_templates(struct b43_wldev *dev)
1285 {
1286 u32 status;
1287
1288 B43_WARN_ON(!dev->cached_beacon);
1289
1290 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1291 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1292 b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB);
1293
1294 status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1295 status |= 0x03;
1296 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1297 }
1298
1299 static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon)
1300 {
1301 int err;
1302
1303 err = b43_refresh_cached_beacon(dev, beacon);
1304 if (unlikely(err))
1305 return;
1306 b43_update_templates(dev);
1307 }
1308
1309 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1310 {
1311 u32 tmp;
1312 u16 i, len;
1313
1314 len = min((u16) ssid_len, (u16) 0x100);
1315 for (i = 0; i < len; i += sizeof(u32)) {
1316 tmp = (u32) (ssid[i + 0]);
1317 if (i + 1 < len)
1318 tmp |= (u32) (ssid[i + 1]) << 8;
1319 if (i + 2 < len)
1320 tmp |= (u32) (ssid[i + 2]) << 16;
1321 if (i + 3 < len)
1322 tmp |= (u32) (ssid[i + 3]) << 24;
1323 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1324 }
1325 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1326 }
1327
1328 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1329 {
1330 b43_time_lock(dev);
1331 if (dev->dev->id.revision >= 3) {
1332 b43_write32(dev, 0x188, (beacon_int << 16));
1333 } else {
1334 b43_write16(dev, 0x606, (beacon_int >> 6));
1335 b43_write16(dev, 0x610, beacon_int);
1336 }
1337 b43_time_unlock(dev);
1338 }
1339
1340 static void handle_irq_beacon(struct b43_wldev *dev)
1341 {
1342 u32 status;
1343
1344 if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP))
1345 return;
1346
1347 dev->irq_savedstate &= ~B43_IRQ_BEACON;
1348 status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1349
1350 if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) {
1351 /* ACK beacon IRQ. */
1352 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1353 dev->irq_savedstate |= B43_IRQ_BEACON;
1354 if (dev->cached_beacon)
1355 kfree_skb(dev->cached_beacon);
1356 dev->cached_beacon = NULL;
1357 return;
1358 }
1359 if (!(status & 0x1)) {
1360 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1361 status |= 0x1;
1362 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1363 }
1364 if (!(status & 0x2)) {
1365 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1366 status |= 0x2;
1367 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1368 }
1369 }
1370
1371 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1372 {
1373 //TODO
1374 }
1375
1376 /* Interrupt handler bottom-half */
1377 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1378 {
1379 u32 reason;
1380 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1381 u32 merged_dma_reason = 0;
1382 int i;
1383 unsigned long flags;
1384
1385 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1386
1387 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1388
1389 reason = dev->irq_reason;
1390 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1391 dma_reason[i] = dev->dma_reason[i];
1392 merged_dma_reason |= dma_reason[i];
1393 }
1394
1395 if (unlikely(reason & B43_IRQ_MAC_TXERR))
1396 b43err(dev->wl, "MAC transmission error\n");
1397
1398 if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1399 b43err(dev->wl, "PHY transmission error\n");
1400 rmb();
1401 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1402 atomic_set(&dev->phy.txerr_cnt,
1403 B43_PHY_TX_BADNESS_LIMIT);
1404 b43err(dev->wl, "Too many PHY TX errors, "
1405 "restarting the controller\n");
1406 b43_controller_restart(dev, "PHY TX errors");
1407 }
1408 }
1409
1410 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1411 B43_DMAIRQ_NONFATALMASK))) {
1412 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1413 b43err(dev->wl, "Fatal DMA error: "
1414 "0x%08X, 0x%08X, 0x%08X, "
1415 "0x%08X, 0x%08X, 0x%08X\n",
1416 dma_reason[0], dma_reason[1],
1417 dma_reason[2], dma_reason[3],
1418 dma_reason[4], dma_reason[5]);
1419 b43_controller_restart(dev, "DMA error");
1420 mmiowb();
1421 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1422 return;
1423 }
1424 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1425 b43err(dev->wl, "DMA error: "
1426 "0x%08X, 0x%08X, 0x%08X, "
1427 "0x%08X, 0x%08X, 0x%08X\n",
1428 dma_reason[0], dma_reason[1],
1429 dma_reason[2], dma_reason[3],
1430 dma_reason[4], dma_reason[5]);
1431 }
1432 }
1433
1434 if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1435 handle_irq_ucode_debug(dev);
1436 if (reason & B43_IRQ_TBTT_INDI)
1437 handle_irq_tbtt_indication(dev);
1438 if (reason & B43_IRQ_ATIM_END)
1439 handle_irq_atim_end(dev);
1440 if (reason & B43_IRQ_BEACON)
1441 handle_irq_beacon(dev);
1442 if (reason & B43_IRQ_PMQ)
1443 handle_irq_pmq(dev);
1444 if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1445 ;/* TODO */
1446 if (reason & B43_IRQ_NOISESAMPLE_OK)
1447 handle_irq_noise(dev);
1448
1449 /* Check the DMA reason registers for received data. */
1450 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1451 if (b43_using_pio(dev))
1452 b43_pio_rx(dev->pio.queue0);
1453 else
1454 b43_dma_rx(dev->dma.rx_ring0);
1455 }
1456 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1457 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1458 if (dma_reason[3] & B43_DMAIRQ_RX_DONE) {
1459 if (b43_using_pio(dev))
1460 b43_pio_rx(dev->pio.queue3);
1461 else
1462 b43_dma_rx(dev->dma.rx_ring3);
1463 }
1464 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1465 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1466
1467 if (reason & B43_IRQ_TX_OK)
1468 handle_irq_transmit_status(dev);
1469
1470 b43_interrupt_enable(dev, dev->irq_savedstate);
1471 mmiowb();
1472 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1473 }
1474
1475 static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx)
1476 {
1477 u16 rxctl;
1478
1479 rxctl = b43_read16(dev, base + B43_PIO_RXCTL);
1480 if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE)
1481 dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE;
1482 else
1483 dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE;
1484 }
1485
1486 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1487 {
1488 if (b43_using_pio(dev) &&
1489 (dev->dev->id.revision < 3) &&
1490 (!(reason & B43_IRQ_PIO_WORKAROUND))) {
1491 /* Apply a PIO specific workaround to the dma_reasons */
1492 pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0);
1493 pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1);
1494 pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2);
1495 pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3);
1496 }
1497
1498 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1499
1500 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1501 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1502 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1503 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1504 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1505 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1506 }
1507
1508 /* Interrupt handler top-half */
1509 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1510 {
1511 irqreturn_t ret = IRQ_NONE;
1512 struct b43_wldev *dev = dev_id;
1513 u32 reason;
1514
1515 if (!dev)
1516 return IRQ_NONE;
1517
1518 spin_lock(&dev->wl->irq_lock);
1519
1520 if (b43_status(dev) < B43_STAT_STARTED)
1521 goto out;
1522 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1523 if (reason == 0xffffffff) /* shared IRQ */
1524 goto out;
1525 ret = IRQ_HANDLED;
1526 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1527 if (!reason)
1528 goto out;
1529
1530 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1531 & 0x0001DC00;
1532 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1533 & 0x0000DC00;
1534 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1535 & 0x0000DC00;
1536 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1537 & 0x0001DC00;
1538 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1539 & 0x0000DC00;
1540 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1541 & 0x0000DC00;
1542
1543 b43_interrupt_ack(dev, reason);
1544 /* disable all IRQs. They are enabled again in the bottom half. */
1545 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1546 /* save the reason code and call our bottom half. */
1547 dev->irq_reason = reason;
1548 tasklet_schedule(&dev->isr_tasklet);
1549 out:
1550 mmiowb();
1551 spin_unlock(&dev->wl->irq_lock);
1552
1553 return ret;
1554 }
1555
1556 static void b43_release_firmware(struct b43_wldev *dev)
1557 {
1558 release_firmware(dev->fw.ucode);
1559 dev->fw.ucode = NULL;
1560 release_firmware(dev->fw.pcm);
1561 dev->fw.pcm = NULL;
1562 release_firmware(dev->fw.initvals);
1563 dev->fw.initvals = NULL;
1564 release_firmware(dev->fw.initvals_band);
1565 dev->fw.initvals_band = NULL;
1566 }
1567
1568 static void b43_print_fw_helptext(struct b43_wl *wl)
1569 {
1570 b43err(wl, "You must go to "
1571 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1572 "and download the correct firmware (version 4).\n");
1573 }
1574
1575 static int do_request_fw(struct b43_wldev *dev,
1576 const char *name,
1577 const struct firmware **fw)
1578 {
1579 char path[sizeof(modparam_fwpostfix) + 32];
1580 struct b43_fw_header *hdr;
1581 u32 size;
1582 int err;
1583
1584 if (!name)
1585 return 0;
1586
1587 snprintf(path, ARRAY_SIZE(path),
1588 "b43%s/%s.fw",
1589 modparam_fwpostfix, name);
1590 err = request_firmware(fw, path, dev->dev->dev);
1591 if (err) {
1592 b43err(dev->wl, "Firmware file \"%s\" not found "
1593 "or load failed.\n", path);
1594 return err;
1595 }
1596 if ((*fw)->size < sizeof(struct b43_fw_header))
1597 goto err_format;
1598 hdr = (struct b43_fw_header *)((*fw)->data);
1599 switch (hdr->type) {
1600 case B43_FW_TYPE_UCODE:
1601 case B43_FW_TYPE_PCM:
1602 size = be32_to_cpu(hdr->size);
1603 if (size != (*fw)->size - sizeof(struct b43_fw_header))
1604 goto err_format;
1605 /* fallthrough */
1606 case B43_FW_TYPE_IV:
1607 if (hdr->ver != 1)
1608 goto err_format;
1609 break;
1610 default:
1611 goto err_format;
1612 }
1613
1614 return err;
1615
1616 err_format:
1617 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1618 return -EPROTO;
1619 }
1620
1621 static int b43_request_firmware(struct b43_wldev *dev)
1622 {
1623 struct b43_firmware *fw = &dev->fw;
1624 const u8 rev = dev->dev->id.revision;
1625 const char *filename;
1626 u32 tmshigh;
1627 int err;
1628
1629 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1630 if (!fw->ucode) {
1631 if ((rev >= 5) && (rev <= 10))
1632 filename = "ucode5";
1633 else if ((rev >= 11) && (rev <= 12))
1634 filename = "ucode11";
1635 else if (rev >= 13)
1636 filename = "ucode13";
1637 else
1638 goto err_no_ucode;
1639 err = do_request_fw(dev, filename, &fw->ucode);
1640 if (err)
1641 goto err_load;
1642 }
1643 if (!fw->pcm) {
1644 if ((rev >= 5) && (rev <= 10))
1645 filename = "pcm5";
1646 else if (rev >= 11)
1647 filename = NULL;
1648 else
1649 goto err_no_pcm;
1650 err = do_request_fw(dev, filename, &fw->pcm);
1651 if (err)
1652 goto err_load;
1653 }
1654 if (!fw->initvals) {
1655 switch (dev->phy.type) {
1656 case B43_PHYTYPE_A:
1657 if ((rev >= 5) && (rev <= 10)) {
1658 if (tmshigh & B43_TMSHIGH_GPHY)
1659 filename = "a0g1initvals5";
1660 else
1661 filename = "a0g0initvals5";
1662 } else
1663 goto err_no_initvals;
1664 break;
1665 case B43_PHYTYPE_G:
1666 if ((rev >= 5) && (rev <= 10))
1667 filename = "b0g0initvals5";
1668 else if (rev >= 13)
1669 filename = "lp0initvals13";
1670 else
1671 goto err_no_initvals;
1672 break;
1673 default:
1674 goto err_no_initvals;
1675 }
1676 err = do_request_fw(dev, filename, &fw->initvals);
1677 if (err)
1678 goto err_load;
1679 }
1680 if (!fw->initvals_band) {
1681 switch (dev->phy.type) {
1682 case B43_PHYTYPE_A:
1683 if ((rev >= 5) && (rev <= 10)) {
1684 if (tmshigh & B43_TMSHIGH_GPHY)
1685 filename = "a0g1bsinitvals5";
1686 else
1687 filename = "a0g0bsinitvals5";
1688 } else if (rev >= 11)
1689 filename = NULL;
1690 else
1691 goto err_no_initvals;
1692 break;
1693 case B43_PHYTYPE_G:
1694 if ((rev >= 5) && (rev <= 10))
1695 filename = "b0g0bsinitvals5";
1696 else if (rev >= 11)
1697 filename = NULL;
1698 else
1699 goto err_no_initvals;
1700 break;
1701 default:
1702 goto err_no_initvals;
1703 }
1704 err = do_request_fw(dev, filename, &fw->initvals_band);
1705 if (err)
1706 goto err_load;
1707 }
1708
1709 return 0;
1710
1711 err_load:
1712 b43_print_fw_helptext(dev->wl);
1713 goto error;
1714
1715 err_no_ucode:
1716 err = -ENODEV;
1717 b43err(dev->wl, "No microcode available for core rev %u\n", rev);
1718 goto error;
1719
1720 err_no_pcm:
1721 err = -ENODEV;
1722 b43err(dev->wl, "No PCM available for core rev %u\n", rev);
1723 goto error;
1724
1725 err_no_initvals:
1726 err = -ENODEV;
1727 b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
1728 "core rev %u\n", dev->phy.type, rev);
1729 goto error;
1730
1731 error:
1732 b43_release_firmware(dev);
1733 return err;
1734 }
1735
1736 static int b43_upload_microcode(struct b43_wldev *dev)
1737 {
1738 const size_t hdr_len = sizeof(struct b43_fw_header);
1739 const __be32 *data;
1740 unsigned int i, len;
1741 u16 fwrev, fwpatch, fwdate, fwtime;
1742 u32 tmp;
1743 int err = 0;
1744
1745 /* Upload Microcode. */
1746 data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1747 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1748 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
1749 for (i = 0; i < len; i++) {
1750 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1751 udelay(10);
1752 }
1753
1754 if (dev->fw.pcm) {
1755 /* Upload PCM data. */
1756 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1757 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1758 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
1759 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
1760 /* No need for autoinc bit in SHM_HW */
1761 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
1762 for (i = 0; i < len; i++) {
1763 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1764 udelay(10);
1765 }
1766 }
1767
1768 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
1769 b43_write32(dev, B43_MMIO_MACCTL,
1770 B43_MACCTL_PSM_RUN |
1771 B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA);
1772
1773 /* Wait for the microcode to load and respond */
1774 i = 0;
1775 while (1) {
1776 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1777 if (tmp == B43_IRQ_MAC_SUSPENDED)
1778 break;
1779 i++;
1780 if (i >= 50) {
1781 b43err(dev->wl, "Microcode not responding\n");
1782 b43_print_fw_helptext(dev->wl);
1783 err = -ENODEV;
1784 goto out;
1785 }
1786 udelay(10);
1787 }
1788 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
1789
1790 /* Get and check the revisions. */
1791 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
1792 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
1793 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
1794 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
1795
1796 if (fwrev <= 0x128) {
1797 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
1798 "binary drivers older than version 4.x is unsupported. "
1799 "You must upgrade your firmware files.\n");
1800 b43_print_fw_helptext(dev->wl);
1801 b43_write32(dev, B43_MMIO_MACCTL, 0);
1802 err = -EOPNOTSUPP;
1803 goto out;
1804 }
1805 b43dbg(dev->wl, "Loading firmware version %u.%u "
1806 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
1807 fwrev, fwpatch,
1808 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1809 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
1810
1811 dev->fw.rev = fwrev;
1812 dev->fw.patch = fwpatch;
1813
1814 out:
1815 return err;
1816 }
1817
1818 static int b43_write_initvals(struct b43_wldev *dev,
1819 const struct b43_iv *ivals,
1820 size_t count,
1821 size_t array_size)
1822 {
1823 const struct b43_iv *iv;
1824 u16 offset;
1825 size_t i;
1826 bool bit32;
1827
1828 BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
1829 iv = ivals;
1830 for (i = 0; i < count; i++) {
1831 if (array_size < sizeof(iv->offset_size))
1832 goto err_format;
1833 array_size -= sizeof(iv->offset_size);
1834 offset = be16_to_cpu(iv->offset_size);
1835 bit32 = !!(offset & B43_IV_32BIT);
1836 offset &= B43_IV_OFFSET_MASK;
1837 if (offset >= 0x1000)
1838 goto err_format;
1839 if (bit32) {
1840 u32 value;
1841
1842 if (array_size < sizeof(iv->data.d32))
1843 goto err_format;
1844 array_size -= sizeof(iv->data.d32);
1845
1846 value = be32_to_cpu(get_unaligned(&iv->data.d32));
1847 b43_write32(dev, offset, value);
1848
1849 iv = (const struct b43_iv *)((const uint8_t *)iv +
1850 sizeof(__be16) +
1851 sizeof(__be32));
1852 } else {
1853 u16 value;
1854
1855 if (array_size < sizeof(iv->data.d16))
1856 goto err_format;
1857 array_size -= sizeof(iv->data.d16);
1858
1859 value = be16_to_cpu(iv->data.d16);
1860 b43_write16(dev, offset, value);
1861
1862 iv = (const struct b43_iv *)((const uint8_t *)iv +
1863 sizeof(__be16) +
1864 sizeof(__be16));
1865 }
1866 }
1867 if (array_size)
1868 goto err_format;
1869
1870 return 0;
1871
1872 err_format:
1873 b43err(dev->wl, "Initial Values Firmware file-format error.\n");
1874 b43_print_fw_helptext(dev->wl);
1875
1876 return -EPROTO;
1877 }
1878
1879 static int b43_upload_initvals(struct b43_wldev *dev)
1880 {
1881 const size_t hdr_len = sizeof(struct b43_fw_header);
1882 const struct b43_fw_header *hdr;
1883 struct b43_firmware *fw = &dev->fw;
1884 const struct b43_iv *ivals;
1885 size_t count;
1886 int err;
1887
1888 hdr = (const struct b43_fw_header *)(fw->initvals->data);
1889 ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len);
1890 count = be32_to_cpu(hdr->size);
1891 err = b43_write_initvals(dev, ivals, count,
1892 fw->initvals->size - hdr_len);
1893 if (err)
1894 goto out;
1895 if (fw->initvals_band) {
1896 hdr = (const struct b43_fw_header *)(fw->initvals_band->data);
1897 ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len);
1898 count = be32_to_cpu(hdr->size);
1899 err = b43_write_initvals(dev, ivals, count,
1900 fw->initvals_band->size - hdr_len);
1901 if (err)
1902 goto out;
1903 }
1904 out:
1905
1906 return err;
1907 }
1908
1909 /* Initialize the GPIOs
1910 * http://bcm-specs.sipsolutions.net/GPIO
1911 */
1912 static int b43_gpio_init(struct b43_wldev *dev)
1913 {
1914 struct ssb_bus *bus = dev->dev->bus;
1915 struct ssb_device *gpiodev, *pcidev = NULL;
1916 u32 mask, set;
1917
1918 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
1919 & ~B43_MACCTL_GPOUTSMSK);
1920
1921 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
1922 | 0x000F);
1923
1924 mask = 0x0000001F;
1925 set = 0x0000000F;
1926 if (dev->dev->bus->chip_id == 0x4301) {
1927 mask |= 0x0060;
1928 set |= 0x0060;
1929 }
1930 if (0 /* FIXME: conditional unknown */ ) {
1931 b43_write16(dev, B43_MMIO_GPIO_MASK,
1932 b43_read16(dev, B43_MMIO_GPIO_MASK)
1933 | 0x0100);
1934 mask |= 0x0180;
1935 set |= 0x0180;
1936 }
1937 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
1938 b43_write16(dev, B43_MMIO_GPIO_MASK,
1939 b43_read16(dev, B43_MMIO_GPIO_MASK)
1940 | 0x0200);
1941 mask |= 0x0200;
1942 set |= 0x0200;
1943 }
1944 if (dev->dev->id.revision >= 2)
1945 mask |= 0x0010; /* FIXME: This is redundant. */
1946
1947 #ifdef CONFIG_SSB_DRIVER_PCICORE
1948 pcidev = bus->pcicore.dev;
1949 #endif
1950 gpiodev = bus->chipco.dev ? : pcidev;
1951 if (!gpiodev)
1952 return 0;
1953 ssb_write32(gpiodev, B43_GPIO_CONTROL,
1954 (ssb_read32(gpiodev, B43_GPIO_CONTROL)
1955 & mask) | set);
1956
1957 return 0;
1958 }
1959
1960 /* Turn off all GPIO stuff. Call this on module unload, for example. */
1961 static void b43_gpio_cleanup(struct b43_wldev *dev)
1962 {
1963 struct ssb_bus *bus = dev->dev->bus;
1964 struct ssb_device *gpiodev, *pcidev = NULL;
1965
1966 #ifdef CONFIG_SSB_DRIVER_PCICORE
1967 pcidev = bus->pcicore.dev;
1968 #endif
1969 gpiodev = bus->chipco.dev ? : pcidev;
1970 if (!gpiodev)
1971 return;
1972 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
1973 }
1974
1975 /* http://bcm-specs.sipsolutions.net/EnableMac */
1976 void b43_mac_enable(struct b43_wldev *dev)
1977 {
1978 dev->mac_suspended--;
1979 B43_WARN_ON(dev->mac_suspended < 0);
1980 B43_WARN_ON(irqs_disabled());
1981 if (dev->mac_suspended == 0) {
1982 b43_write32(dev, B43_MMIO_MACCTL,
1983 b43_read32(dev, B43_MMIO_MACCTL)
1984 | B43_MACCTL_ENABLED);
1985 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
1986 B43_IRQ_MAC_SUSPENDED);
1987 /* Commit writes */
1988 b43_read32(dev, B43_MMIO_MACCTL);
1989 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1990 b43_power_saving_ctl_bits(dev, 0);
1991
1992 /* Re-enable IRQs. */
1993 spin_lock_irq(&dev->wl->irq_lock);
1994 b43_interrupt_enable(dev, dev->irq_savedstate);
1995 spin_unlock_irq(&dev->wl->irq_lock);
1996 }
1997 }
1998
1999 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2000 void b43_mac_suspend(struct b43_wldev *dev)
2001 {
2002 int i;
2003 u32 tmp;
2004
2005 might_sleep();
2006 B43_WARN_ON(irqs_disabled());
2007 B43_WARN_ON(dev->mac_suspended < 0);
2008
2009 if (dev->mac_suspended == 0) {
2010 /* Mask IRQs before suspending MAC. Otherwise
2011 * the MAC stays busy and won't suspend. */
2012 spin_lock_irq(&dev->wl->irq_lock);
2013 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
2014 spin_unlock_irq(&dev->wl->irq_lock);
2015 b43_synchronize_irq(dev);
2016 dev->irq_savedstate = tmp;
2017
2018 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2019 b43_write32(dev, B43_MMIO_MACCTL,
2020 b43_read32(dev, B43_MMIO_MACCTL)
2021 & ~B43_MACCTL_ENABLED);
2022 /* force pci to flush the write */
2023 b43_read32(dev, B43_MMIO_MACCTL);
2024 for (i = 40; i; i--) {
2025 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2026 if (tmp & B43_IRQ_MAC_SUSPENDED)
2027 goto out;
2028 msleep(1);
2029 }
2030 b43err(dev->wl, "MAC suspend failed\n");
2031 }
2032 out:
2033 dev->mac_suspended++;
2034 }
2035
2036 static void b43_adjust_opmode(struct b43_wldev *dev)
2037 {
2038 struct b43_wl *wl = dev->wl;
2039 u32 ctl;
2040 u16 cfp_pretbtt;
2041
2042 ctl = b43_read32(dev, B43_MMIO_MACCTL);
2043 /* Reset status to STA infrastructure mode. */
2044 ctl &= ~B43_MACCTL_AP;
2045 ctl &= ~B43_MACCTL_KEEP_CTL;
2046 ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2047 ctl &= ~B43_MACCTL_KEEP_BAD;
2048 ctl &= ~B43_MACCTL_PROMISC;
2049 ctl &= ~B43_MACCTL_BEACPROMISC;
2050 ctl |= B43_MACCTL_INFRA;
2051
2052 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2053 ctl |= B43_MACCTL_AP;
2054 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2055 ctl &= ~B43_MACCTL_INFRA;
2056
2057 if (wl->filter_flags & FIF_CONTROL)
2058 ctl |= B43_MACCTL_KEEP_CTL;
2059 if (wl->filter_flags & FIF_FCSFAIL)
2060 ctl |= B43_MACCTL_KEEP_BAD;
2061 if (wl->filter_flags & FIF_PLCPFAIL)
2062 ctl |= B43_MACCTL_KEEP_BADPLCP;
2063 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2064 ctl |= B43_MACCTL_PROMISC;
2065 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2066 ctl |= B43_MACCTL_BEACPROMISC;
2067
2068 /* Workaround: On old hardware the HW-MAC-address-filter
2069 * doesn't work properly, so always run promisc in filter
2070 * it in software. */
2071 if (dev->dev->id.revision <= 4)
2072 ctl |= B43_MACCTL_PROMISC;
2073
2074 b43_write32(dev, B43_MMIO_MACCTL, ctl);
2075
2076 cfp_pretbtt = 2;
2077 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2078 if (dev->dev->bus->chip_id == 0x4306 &&
2079 dev->dev->bus->chip_rev == 3)
2080 cfp_pretbtt = 100;
2081 else
2082 cfp_pretbtt = 50;
2083 }
2084 b43_write16(dev, 0x612, cfp_pretbtt);
2085 }
2086
2087 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2088 {
2089 u16 offset;
2090
2091 if (is_ofdm) {
2092 offset = 0x480;
2093 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2094 } else {
2095 offset = 0x4C0;
2096 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2097 }
2098 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2099 b43_shm_read16(dev, B43_SHM_SHARED, offset));
2100 }
2101
2102 static void b43_rate_memory_init(struct b43_wldev *dev)
2103 {
2104 switch (dev->phy.type) {
2105 case B43_PHYTYPE_A:
2106 case B43_PHYTYPE_G:
2107 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2108 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2109 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2110 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2111 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2112 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2113 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2114 if (dev->phy.type == B43_PHYTYPE_A)
2115 break;
2116 /* fallthrough */
2117 case B43_PHYTYPE_B:
2118 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2119 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2120 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2121 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2122 break;
2123 default:
2124 B43_WARN_ON(1);
2125 }
2126 }
2127
2128 /* Set the TX-Antenna for management frames sent by firmware. */
2129 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2130 {
2131 u16 ant = 0;
2132 u16 tmp;
2133
2134 switch (antenna) {
2135 case B43_ANTENNA0:
2136 ant |= B43_TX4_PHY_ANT0;
2137 break;
2138 case B43_ANTENNA1:
2139 ant |= B43_TX4_PHY_ANT1;
2140 break;
2141 case B43_ANTENNA_AUTO:
2142 ant |= B43_TX4_PHY_ANTLAST;
2143 break;
2144 default:
2145 B43_WARN_ON(1);
2146 }
2147
2148 /* FIXME We also need to set the other flags of the PHY control field somewhere. */
2149
2150 /* For Beacons */
2151 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
2152 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2153 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
2154 /* For ACK/CTS */
2155 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2156 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2157 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2158 /* For Probe Resposes */
2159 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2160 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2161 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2162 }
2163
2164 /* This is the opposite of b43_chip_init() */
2165 static void b43_chip_exit(struct b43_wldev *dev)
2166 {
2167 b43_radio_turn_off(dev, 1);
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
2196 err = b43_upload_initvals(dev);
2197 if (err)
2198 goto err_gpio_clean;
2199 b43_radio_turn_on(dev);
2200
2201 b43_write16(dev, 0x03E6, 0x0000);
2202 err = b43_phy_init(dev);
2203 if (err)
2204 goto err_radio_off;
2205
2206 /* Select initial Interference Mitigation. */
2207 tmp = phy->interfmode;
2208 phy->interfmode = B43_INTERFMODE_NONE;
2209 b43_radio_set_interference_mitigation(dev, tmp);
2210
2211 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2212 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2213
2214 if (phy->type == B43_PHYTYPE_B) {
2215 value16 = b43_read16(dev, 0x005E);
2216 value16 |= 0x0004;
2217 b43_write16(dev, 0x005E, value16);
2218 }
2219 b43_write32(dev, 0x0100, 0x01000000);
2220 if (dev->dev->id.revision < 5)
2221 b43_write32(dev, 0x010C, 0x01000000);
2222
2223 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2224 & ~B43_MACCTL_INFRA);
2225 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2226 | B43_MACCTL_INFRA);
2227
2228 if (b43_using_pio(dev)) {
2229 b43_write32(dev, 0x0210, 0x00000100);
2230 b43_write32(dev, 0x0230, 0x00000100);
2231 b43_write32(dev, 0x0250, 0x00000100);
2232 b43_write32(dev, 0x0270, 0x00000100);
2233 b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000);
2234 }
2235
2236 /* Probe Response Timeout value */
2237 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2238 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2239
2240 /* Initially set the wireless operation mode. */
2241 b43_adjust_opmode(dev);
2242
2243 if (dev->dev->id.revision < 3) {
2244 b43_write16(dev, 0x060E, 0x0000);
2245 b43_write16(dev, 0x0610, 0x8000);
2246 b43_write16(dev, 0x0604, 0x0000);
2247 b43_write16(dev, 0x0606, 0x0200);
2248 } else {
2249 b43_write32(dev, 0x0188, 0x80000000);
2250 b43_write32(dev, 0x018C, 0x02000000);
2251 }
2252 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2253 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2254 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2255 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2256 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2257 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2258 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2259
2260 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2261 value32 |= 0x00100000;
2262 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2263
2264 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2265 dev->dev->bus->chipco.fast_pwrup_delay);
2266
2267 /* OFDM address caching. */
2268 phy->ofdm_valid = 0;
2269
2270 /* PHY TX errors counter. */
2271 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2272
2273 err = 0;
2274 b43dbg(dev->wl, "Chip initialized\n");
2275 out:
2276 return err;
2277
2278 err_radio_off:
2279 b43_radio_turn_off(dev, 1);
2280 err_gpio_clean:
2281 b43_gpio_cleanup(dev);
2282 return err;
2283 }
2284
2285 static void b43_periodic_every120sec(struct b43_wldev *dev)
2286 {
2287 struct b43_phy *phy = &dev->phy;
2288
2289 if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2290 return;
2291
2292 b43_mac_suspend(dev);
2293 b43_lo_g_measure(dev);
2294 b43_mac_enable(dev);
2295 if (b43_has_hardware_pctl(phy))
2296 b43_lo_g_ctl_mark_all_unused(dev);
2297 }
2298
2299 static void b43_periodic_every60sec(struct b43_wldev *dev)
2300 {
2301 struct b43_phy *phy = &dev->phy;
2302
2303 if (!b43_has_hardware_pctl(phy))
2304 b43_lo_g_ctl_mark_all_unused(dev);
2305 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2306 b43_mac_suspend(dev);
2307 b43_calc_nrssi_slope(dev);
2308 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2309 u8 old_chan = phy->channel;
2310
2311 /* VCO Calibration */
2312 if (old_chan >= 8)
2313 b43_radio_selectchannel(dev, 1, 0);
2314 else
2315 b43_radio_selectchannel(dev, 13, 0);
2316 b43_radio_selectchannel(dev, old_chan, 0);
2317 }
2318 b43_mac_enable(dev);
2319 }
2320 }
2321
2322 static void b43_periodic_every30sec(struct b43_wldev *dev)
2323 {
2324 /* Update device statistics. */
2325 b43_calculate_link_quality(dev);
2326 }
2327
2328 static void b43_periodic_every15sec(struct b43_wldev *dev)
2329 {
2330 struct b43_phy *phy = &dev->phy;
2331
2332 if (phy->type == B43_PHYTYPE_G) {
2333 //TODO: update_aci_moving_average
2334 if (phy->aci_enable && phy->aci_wlan_automatic) {
2335 b43_mac_suspend(dev);
2336 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2337 if (0 /*TODO: bunch of conditions */ ) {
2338 b43_radio_set_interference_mitigation
2339 (dev, B43_INTERFMODE_MANUALWLAN);
2340 }
2341 } else if (1 /*TODO*/) {
2342 /*
2343 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2344 b43_radio_set_interference_mitigation(dev,
2345 B43_INTERFMODE_NONE);
2346 }
2347 */
2348 }
2349 b43_mac_enable(dev);
2350 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2351 phy->rev == 1) {
2352 //TODO: implement rev1 workaround
2353 }
2354 }
2355 b43_phy_xmitpower(dev); //FIXME: unless scanning?
2356 //TODO for APHY (temperature?)
2357
2358 atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2359 wmb();
2360 }
2361
2362 static void do_periodic_work(struct b43_wldev *dev)
2363 {
2364 unsigned int state;
2365
2366 state = dev->periodic_state;
2367 if (state % 8 == 0)
2368 b43_periodic_every120sec(dev);
2369 if (state % 4 == 0)
2370 b43_periodic_every60sec(dev);
2371 if (state % 2 == 0)
2372 b43_periodic_every30sec(dev);
2373 b43_periodic_every15sec(dev);
2374 }
2375
2376 /* Periodic work locking policy:
2377 * The whole periodic work handler is protected by
2378 * wl->mutex. If another lock is needed somewhere in the
2379 * pwork callchain, it's aquired in-place, where it's needed.
2380 */
2381 static void b43_periodic_work_handler(struct work_struct *work)
2382 {
2383 struct b43_wldev *dev = container_of(work, struct b43_wldev,
2384 periodic_work.work);
2385 struct b43_wl *wl = dev->wl;
2386 unsigned long delay;
2387
2388 mutex_lock(&wl->mutex);
2389
2390 if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2391 goto out;
2392 if (b43_debug(dev, B43_DBG_PWORK_STOP))
2393 goto out_requeue;
2394
2395 do_periodic_work(dev);
2396
2397 dev->periodic_state++;
2398 out_requeue:
2399 if (b43_debug(dev, B43_DBG_PWORK_FAST))
2400 delay = msecs_to_jiffies(50);
2401 else
2402 delay = round_jiffies_relative(HZ * 15);
2403 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2404 out:
2405 mutex_unlock(&wl->mutex);
2406 }
2407
2408 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2409 {
2410 struct delayed_work *work = &dev->periodic_work;
2411
2412 dev->periodic_state = 0;
2413 INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2414 queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2415 }
2416
2417 /* Validate access to the chip (SHM) */
2418 static int b43_validate_chipaccess(struct b43_wldev *dev)
2419 {
2420 u32 value;
2421 u32 shm_backup;
2422
2423 shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2424 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2425 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2426 goto error;
2427 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2428 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2429 goto error;
2430 b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup);
2431
2432 value = b43_read32(dev, B43_MMIO_MACCTL);
2433 if ((value | B43_MACCTL_GMODE) !=
2434 (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2435 goto error;
2436
2437 value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2438 if (value)
2439 goto error;
2440
2441 return 0;
2442 error:
2443 b43err(dev->wl, "Failed to validate the chipaccess\n");
2444 return -ENODEV;
2445 }
2446
2447 static void b43_security_init(struct b43_wldev *dev)
2448 {
2449 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2450 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2451 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2452 /* KTP is a word address, but we address SHM bytewise.
2453 * So multiply by two.
2454 */
2455 dev->ktp *= 2;
2456 if (dev->dev->id.revision >= 5) {
2457 /* Number of RCMTA address slots */
2458 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2459 }
2460 b43_clear_keys(dev);
2461 }
2462
2463 static int b43_rng_read(struct hwrng *rng, u32 * data)
2464 {
2465 struct b43_wl *wl = (struct b43_wl *)rng->priv;
2466 unsigned long flags;
2467
2468 /* Don't take wl->mutex here, as it could deadlock with
2469 * hwrng internal locking. It's not needed to take
2470 * wl->mutex here, anyway. */
2471
2472 spin_lock_irqsave(&wl->irq_lock, flags);
2473 *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2474 spin_unlock_irqrestore(&wl->irq_lock, flags);
2475
2476 return (sizeof(u16));
2477 }
2478
2479 static void b43_rng_exit(struct b43_wl *wl)
2480 {
2481 if (wl->rng_initialized)
2482 hwrng_unregister(&wl->rng);
2483 }
2484
2485 static int b43_rng_init(struct b43_wl *wl)
2486 {
2487 int err;
2488
2489 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2490 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2491 wl->rng.name = wl->rng_name;
2492 wl->rng.data_read = b43_rng_read;
2493 wl->rng.priv = (unsigned long)wl;
2494 wl->rng_initialized = 1;
2495 err = hwrng_register(&wl->rng);
2496 if (err) {
2497 wl->rng_initialized = 0;
2498 b43err(wl, "Failed to register the random "
2499 "number generator (%d)\n", err);
2500 }
2501
2502 return err;
2503 }
2504
2505 static int b43_op_tx(struct ieee80211_hw *hw,
2506 struct sk_buff *skb,
2507 struct ieee80211_tx_control *ctl)
2508 {
2509 struct b43_wl *wl = hw_to_b43_wl(hw);
2510 struct b43_wldev *dev = wl->current_dev;
2511 int err = -ENODEV;
2512 unsigned long flags;
2513
2514 if (unlikely(!dev))
2515 goto out;
2516 if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2517 goto out;
2518 /* DMA-TX is done without a global lock. */
2519 if (b43_using_pio(dev)) {
2520 spin_lock_irqsave(&wl->irq_lock, flags);
2521 err = b43_pio_tx(dev, skb, ctl);
2522 spin_unlock_irqrestore(&wl->irq_lock, flags);
2523 } else
2524 err = b43_dma_tx(dev, skb, ctl);
2525 out:
2526 if (unlikely(err))
2527 return NETDEV_TX_BUSY;
2528 return NETDEV_TX_OK;
2529 }
2530
2531 static int b43_op_conf_tx(struct ieee80211_hw *hw,
2532 int queue,
2533 const struct ieee80211_tx_queue_params *params)
2534 {
2535 return 0;
2536 }
2537
2538 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
2539 struct ieee80211_tx_queue_stats *stats)
2540 {
2541 struct b43_wl *wl = hw_to_b43_wl(hw);
2542 struct b43_wldev *dev = wl->current_dev;
2543 unsigned long flags;
2544 int err = -ENODEV;
2545
2546 if (!dev)
2547 goto out;
2548 spin_lock_irqsave(&wl->irq_lock, flags);
2549 if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2550 if (b43_using_pio(dev))
2551 b43_pio_get_tx_stats(dev, stats);
2552 else
2553 b43_dma_get_tx_stats(dev, stats);
2554 err = 0;
2555 }
2556 spin_unlock_irqrestore(&wl->irq_lock, flags);
2557 out:
2558 return err;
2559 }
2560
2561 static int b43_op_get_stats(struct ieee80211_hw *hw,
2562 struct ieee80211_low_level_stats *stats)
2563 {
2564 struct b43_wl *wl = hw_to_b43_wl(hw);
2565 unsigned long flags;
2566
2567 spin_lock_irqsave(&wl->irq_lock, flags);
2568 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2569 spin_unlock_irqrestore(&wl->irq_lock, flags);
2570
2571 return 0;
2572 }
2573
2574 static const char *phymode_to_string(unsigned int phymode)
2575 {
2576 switch (phymode) {
2577 case B43_PHYMODE_A:
2578 return "A";
2579 case B43_PHYMODE_B:
2580 return "B";
2581 case B43_PHYMODE_G:
2582 return "G";
2583 default:
2584 B43_WARN_ON(1);
2585 }
2586 return "";
2587 }
2588
2589 static int find_wldev_for_phymode(struct b43_wl *wl,
2590 unsigned int phymode,
2591 struct b43_wldev **dev, bool * gmode)
2592 {
2593 struct b43_wldev *d;
2594
2595 list_for_each_entry(d, &wl->devlist, list) {
2596 if (d->phy.possible_phymodes & phymode) {
2597 /* Ok, this device supports the PHY-mode.
2598 * Now figure out how the gmode bit has to be
2599 * set to support it. */
2600 if (phymode == B43_PHYMODE_A)
2601 *gmode = 0;
2602 else
2603 *gmode = 1;
2604 *dev = d;
2605
2606 return 0;
2607 }
2608 }
2609
2610 return -ESRCH;
2611 }
2612
2613 static void b43_put_phy_into_reset(struct b43_wldev *dev)
2614 {
2615 struct ssb_device *sdev = dev->dev;
2616 u32 tmslow;
2617
2618 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2619 tmslow &= ~B43_TMSLOW_GMODE;
2620 tmslow |= B43_TMSLOW_PHYRESET;
2621 tmslow |= SSB_TMSLOW_FGC;
2622 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2623 msleep(1);
2624
2625 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2626 tmslow &= ~SSB_TMSLOW_FGC;
2627 tmslow |= B43_TMSLOW_PHYRESET;
2628 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2629 msleep(1);
2630 }
2631
2632 /* Expects wl->mutex locked */
2633 static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode)
2634 {
2635 struct b43_wldev *up_dev;
2636 struct b43_wldev *down_dev;
2637 int err;
2638 bool gmode = 0;
2639 int prev_status;
2640
2641 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2642 if (err) {
2643 b43err(wl, "Could not find a device for %s-PHY mode\n",
2644 phymode_to_string(new_mode));
2645 return err;
2646 }
2647 if ((up_dev == wl->current_dev) &&
2648 (!!wl->current_dev->phy.gmode == !!gmode)) {
2649 /* This device is already running. */
2650 return 0;
2651 }
2652 b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2653 phymode_to_string(new_mode));
2654 down_dev = wl->current_dev;
2655
2656 prev_status = b43_status(down_dev);
2657 /* Shutdown the currently running core. */
2658 if (prev_status >= B43_STAT_STARTED)
2659 b43_wireless_core_stop(down_dev);
2660 if (prev_status >= B43_STAT_INITIALIZED)
2661 b43_wireless_core_exit(down_dev);
2662
2663 if (down_dev != up_dev) {
2664 /* We switch to a different core, so we put PHY into
2665 * RESET on the old core. */
2666 b43_put_phy_into_reset(down_dev);
2667 }
2668
2669 /* Now start the new core. */
2670 up_dev->phy.gmode = gmode;
2671 if (prev_status >= B43_STAT_INITIALIZED) {
2672 err = b43_wireless_core_init(up_dev);
2673 if (err) {
2674 b43err(wl, "Fatal: Could not initialize device for "
2675 "newly selected %s-PHY mode\n",
2676 phymode_to_string(new_mode));
2677 goto init_failure;
2678 }
2679 }
2680 if (prev_status >= B43_STAT_STARTED) {
2681 err = b43_wireless_core_start(up_dev);
2682 if (err) {
2683 b43err(wl, "Fatal: Coult not start device for "
2684 "newly selected %s-PHY mode\n",
2685 phymode_to_string(new_mode));
2686 b43_wireless_core_exit(up_dev);
2687 goto init_failure;
2688 }
2689 }
2690 B43_WARN_ON(b43_status(up_dev) != prev_status);
2691
2692 wl->current_dev = up_dev;
2693
2694 return 0;
2695 init_failure:
2696 /* Whoops, failed to init the new core. No core is operating now. */
2697 wl->current_dev = NULL;
2698 return err;
2699 }
2700
2701 static int b43_antenna_from_ieee80211(u8 antenna)
2702 {
2703 switch (antenna) {
2704 case 0: /* default/diversity */
2705 return B43_ANTENNA_DEFAULT;
2706 case 1: /* Antenna 0 */
2707 return B43_ANTENNA0;
2708 case 2: /* Antenna 1 */
2709 return B43_ANTENNA1;
2710 default:
2711 return B43_ANTENNA_DEFAULT;
2712 }
2713 }
2714
2715 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2716 {
2717 struct b43_wl *wl = hw_to_b43_wl(hw);
2718 struct b43_wldev *dev;
2719 struct b43_phy *phy;
2720 unsigned long flags;
2721 unsigned int new_phymode = 0xFFFF;
2722 int antenna_tx;
2723 int antenna_rx;
2724 int err = 0;
2725 u32 savedirqs;
2726
2727 antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx);
2728 antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx);
2729
2730 mutex_lock(&wl->mutex);
2731
2732 /* Switch the PHY mode (if necessary). */
2733 switch (conf->phymode) {
2734 case MODE_IEEE80211A:
2735 new_phymode = B43_PHYMODE_A;
2736 break;
2737 case MODE_IEEE80211B:
2738 new_phymode = B43_PHYMODE_B;
2739 break;
2740 case MODE_IEEE80211G:
2741 new_phymode = B43_PHYMODE_G;
2742 break;
2743 default:
2744 B43_WARN_ON(1);
2745 }
2746 err = b43_switch_phymode(wl, new_phymode);
2747 if (err)
2748 goto out_unlock_mutex;
2749 dev = wl->current_dev;
2750 phy = &dev->phy;
2751
2752 /* Disable IRQs while reconfiguring the device.
2753 * This makes it possible to drop the spinlock throughout
2754 * the reconfiguration process. */
2755 spin_lock_irqsave(&wl->irq_lock, flags);
2756 if (b43_status(dev) < B43_STAT_STARTED) {
2757 spin_unlock_irqrestore(&wl->irq_lock, flags);
2758 goto out_unlock_mutex;
2759 }
2760 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
2761 spin_unlock_irqrestore(&wl->irq_lock, flags);
2762 b43_synchronize_irq(dev);
2763
2764 /* Switch to the requested channel.
2765 * The firmware takes care of races with the TX handler. */
2766 if (conf->channel_val != phy->channel)
2767 b43_radio_selectchannel(dev, conf->channel_val, 0);
2768
2769 /* Enable/Disable ShortSlot timing. */
2770 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
2771 dev->short_slot) {
2772 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
2773 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
2774 b43_short_slot_timing_enable(dev);
2775 else
2776 b43_short_slot_timing_disable(dev);
2777 }
2778
2779 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2780
2781 /* Adjust the desired TX power level. */
2782 if (conf->power_level != 0) {
2783 if (conf->power_level != phy->power_level) {
2784 phy->power_level = conf->power_level;
2785 b43_phy_xmitpower(dev);
2786 }
2787 }
2788
2789 /* Antennas for RX and management frame TX. */
2790 b43_mgmtframe_txantenna(dev, antenna_tx);
2791 b43_set_rx_antenna(dev, antenna_rx);
2792
2793 /* Update templates for AP mode. */
2794 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2795 b43_set_beacon_int(dev, conf->beacon_int);
2796
2797 if (!!conf->radio_enabled != phy->radio_on) {
2798 if (conf->radio_enabled) {
2799 b43_radio_turn_on(dev);
2800 b43info(dev->wl, "Radio turned on by software\n");
2801 if (!dev->radio_hw_enable) {
2802 b43info(dev->wl, "The hardware RF-kill button "
2803 "still turns the radio physically off. "
2804 "Press the button to turn it on.\n");
2805 }
2806 } else {
2807 b43_radio_turn_off(dev, 0);
2808 b43info(dev->wl, "Radio turned off by software\n");
2809 }
2810 }
2811
2812 spin_lock_irqsave(&wl->irq_lock, flags);
2813 b43_interrupt_enable(dev, savedirqs);
2814 mmiowb();
2815 spin_unlock_irqrestore(&wl->irq_lock, flags);
2816 out_unlock_mutex:
2817 mutex_unlock(&wl->mutex);
2818
2819 return err;
2820 }
2821
2822 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2823 const u8 *local_addr, const u8 *addr,
2824 struct ieee80211_key_conf *key)
2825 {
2826 struct b43_wl *wl = hw_to_b43_wl(hw);
2827 struct b43_wldev *dev;
2828 unsigned long flags;
2829 u8 algorithm;
2830 u8 index;
2831 int err;
2832 DECLARE_MAC_BUF(mac);
2833
2834 if (modparam_nohwcrypt)
2835 return -ENOSPC; /* User disabled HW-crypto */
2836
2837 mutex_lock(&wl->mutex);
2838 spin_lock_irqsave(&wl->irq_lock, flags);
2839
2840 dev = wl->current_dev;
2841 err = -ENODEV;
2842 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
2843 goto out_unlock;
2844
2845 err = -EINVAL;
2846 switch (key->alg) {
2847 case ALG_WEP:
2848 if (key->keylen == 5)
2849 algorithm = B43_SEC_ALGO_WEP40;
2850 else
2851 algorithm = B43_SEC_ALGO_WEP104;
2852 break;
2853 case ALG_TKIP:
2854 algorithm = B43_SEC_ALGO_TKIP;
2855 break;
2856 case ALG_CCMP:
2857 algorithm = B43_SEC_ALGO_AES;
2858 break;
2859 default:
2860 B43_WARN_ON(1);
2861 goto out_unlock;
2862 }
2863 index = (u8) (key->keyidx);
2864 if (index > 3)
2865 goto out_unlock;
2866
2867 switch (cmd) {
2868 case SET_KEY:
2869 if (algorithm == B43_SEC_ALGO_TKIP) {
2870 /* FIXME: No TKIP hardware encryption for now. */
2871 err = -EOPNOTSUPP;
2872 goto out_unlock;
2873 }
2874
2875 if (is_broadcast_ether_addr(addr)) {
2876 /* addr is FF:FF:FF:FF:FF:FF for default keys */
2877 err = b43_key_write(dev, index, algorithm,
2878 key->key, key->keylen, NULL, key);
2879 } else {
2880 /*
2881 * either pairwise key or address is 00:00:00:00:00:00
2882 * for transmit-only keys
2883 */
2884 err = b43_key_write(dev, -1, algorithm,
2885 key->key, key->keylen, addr, key);
2886 }
2887 if (err)
2888 goto out_unlock;
2889
2890 if (algorithm == B43_SEC_ALGO_WEP40 ||
2891 algorithm == B43_SEC_ALGO_WEP104) {
2892 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
2893 } else {
2894 b43_hf_write(dev,
2895 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
2896 }
2897 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2898 break;
2899 case DISABLE_KEY: {
2900 err = b43_key_clear(dev, key->hw_key_idx);
2901 if (err)
2902 goto out_unlock;
2903 break;
2904 }
2905 default:
2906 B43_WARN_ON(1);
2907 }
2908 out_unlock:
2909 spin_unlock_irqrestore(&wl->irq_lock, flags);
2910 mutex_unlock(&wl->mutex);
2911 if (!err) {
2912 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
2913 "mac: %s\n",
2914 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
2915 print_mac(mac, addr));
2916 }
2917 return err;
2918 }
2919
2920 static void b43_op_configure_filter(struct ieee80211_hw *hw,
2921 unsigned int changed, unsigned int *fflags,
2922 int mc_count, struct dev_addr_list *mc_list)
2923 {
2924 struct b43_wl *wl = hw_to_b43_wl(hw);
2925 struct b43_wldev *dev = wl->current_dev;
2926 unsigned long flags;
2927
2928 if (!dev) {
2929 *fflags = 0;
2930 return;
2931 }
2932
2933 spin_lock_irqsave(&wl->irq_lock, flags);
2934 *fflags &= FIF_PROMISC_IN_BSS |
2935 FIF_ALLMULTI |
2936 FIF_FCSFAIL |
2937 FIF_PLCPFAIL |
2938 FIF_CONTROL |
2939 FIF_OTHER_BSS |
2940 FIF_BCN_PRBRESP_PROMISC;
2941
2942 changed &= FIF_PROMISC_IN_BSS |
2943 FIF_ALLMULTI |
2944 FIF_FCSFAIL |
2945 FIF_PLCPFAIL |
2946 FIF_CONTROL |
2947 FIF_OTHER_BSS |
2948 FIF_BCN_PRBRESP_PROMISC;
2949
2950 wl->filter_flags = *fflags;
2951
2952 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
2953 b43_adjust_opmode(dev);
2954 spin_unlock_irqrestore(&wl->irq_lock, flags);
2955 }
2956
2957 static int b43_op_config_interface(struct ieee80211_hw *hw,
2958 int if_id,
2959 struct ieee80211_if_conf *conf)
2960 {
2961 struct b43_wl *wl = hw_to_b43_wl(hw);
2962 struct b43_wldev *dev = wl->current_dev;
2963 unsigned long flags;
2964
2965 if (!dev)
2966 return -ENODEV;
2967 mutex_lock(&wl->mutex);
2968 spin_lock_irqsave(&wl->irq_lock, flags);
2969 B43_WARN_ON(wl->if_id != if_id);
2970 if (conf->bssid)
2971 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2972 else
2973 memset(wl->bssid, 0, ETH_ALEN);
2974 if (b43_status(dev) >= B43_STAT_INITIALIZED) {
2975 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
2976 B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
2977 b43_set_ssid(dev, conf->ssid, conf->ssid_len);
2978 if (conf->beacon)
2979 b43_refresh_templates(dev, conf->beacon);
2980 }
2981 b43_write_mac_bssid_templates(dev);
2982 }
2983 spin_unlock_irqrestore(&wl->irq_lock, flags);
2984 mutex_unlock(&wl->mutex);
2985
2986 return 0;
2987 }
2988
2989 /* Locking: wl->mutex */
2990 static void b43_wireless_core_stop(struct b43_wldev *dev)
2991 {
2992 struct b43_wl *wl = dev->wl;
2993 unsigned long flags;
2994
2995 if (b43_status(dev) < B43_STAT_STARTED)
2996 return;
2997
2998 /* Disable and sync interrupts. We must do this before than
2999 * setting the status to INITIALIZED, as the interrupt handler
3000 * won't care about IRQs then. */
3001 spin_lock_irqsave(&wl->irq_lock, flags);
3002 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3003 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3004 spin_unlock_irqrestore(&wl->irq_lock, flags);
3005 b43_synchronize_irq(dev);
3006
3007 b43_set_status(dev, B43_STAT_INITIALIZED);
3008
3009 mutex_unlock(&wl->mutex);
3010 /* Must unlock as it would otherwise deadlock. No races here.
3011 * Cancel the possibly running self-rearming periodic work. */
3012 cancel_delayed_work_sync(&dev->periodic_work);
3013 mutex_lock(&wl->mutex);
3014
3015 ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
3016
3017 b43_mac_suspend(dev);
3018 free_irq(dev->dev->irq, dev);
3019 b43dbg(wl, "Wireless interface stopped\n");
3020 }
3021
3022 /* Locking: wl->mutex */
3023 static int b43_wireless_core_start(struct b43_wldev *dev)
3024 {
3025 int err;
3026
3027 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3028
3029 drain_txstatus_queue(dev);
3030 err = request_irq(dev->dev->irq, b43_interrupt_handler,
3031 IRQF_SHARED, KBUILD_MODNAME, dev);
3032 if (err) {
3033 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3034 goto out;
3035 }
3036
3037 /* We are ready to run. */
3038 b43_set_status(dev, B43_STAT_STARTED);
3039
3040 /* Start data flow (TX/RX). */
3041 b43_mac_enable(dev);
3042 b43_interrupt_enable(dev, dev->irq_savedstate);
3043 ieee80211_start_queues(dev->wl->hw);
3044
3045 /* Start maintainance work */
3046 b43_periodic_tasks_setup(dev);
3047
3048 b43dbg(dev->wl, "Wireless interface started\n");
3049 out:
3050 return err;
3051 }
3052
3053 /* Get PHY and RADIO versioning numbers */
3054 static int b43_phy_versioning(struct b43_wldev *dev)
3055 {
3056 struct b43_phy *phy = &dev->phy;
3057 u32 tmp;
3058 u8 analog_type;
3059 u8 phy_type;
3060 u8 phy_rev;
3061 u16 radio_manuf;
3062 u16 radio_ver;
3063 u16 radio_rev;
3064 int unsupported = 0;
3065
3066 /* Get PHY versioning */
3067 tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3068 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3069 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3070 phy_rev = (tmp & B43_PHYVER_VERSION);
3071 switch (phy_type) {
3072 case B43_PHYTYPE_A:
3073 if (phy_rev >= 4)
3074 unsupported = 1;
3075 break;
3076 case B43_PHYTYPE_B:
3077 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3078 && phy_rev != 7)
3079 unsupported = 1;
3080 break;
3081 case B43_PHYTYPE_G:
3082 if (phy_rev > 9)
3083 unsupported = 1;
3084 break;
3085 default:
3086 unsupported = 1;
3087 };
3088 if (unsupported) {
3089 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3090 "(Analog %u, Type %u, Revision %u)\n",
3091 analog_type, phy_type, phy_rev);
3092 return -EOPNOTSUPP;
3093 }
3094 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3095 analog_type, phy_type, phy_rev);
3096
3097 /* Get RADIO versioning */
3098 if (dev->dev->bus->chip_id == 0x4317) {
3099 if (dev->dev->bus->chip_rev == 0)
3100 tmp = 0x3205017F;
3101 else if (dev->dev->bus->chip_rev == 1)
3102 tmp = 0x4205017F;
3103 else
3104 tmp = 0x5205017F;
3105 } else {
3106 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3107 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH);
3108 tmp <<= 16;
3109 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3110 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3111 }
3112 radio_manuf = (tmp & 0x00000FFF);
3113 radio_ver = (tmp & 0x0FFFF000) >> 12;
3114 radio_rev = (tmp & 0xF0000000) >> 28;
3115 switch (phy_type) {
3116 case B43_PHYTYPE_A:
3117 if (radio_ver != 0x2060)
3118 unsupported = 1;
3119 if (radio_rev != 1)
3120 unsupported = 1;
3121 if (radio_manuf != 0x17F)
3122 unsupported = 1;
3123 break;
3124 case B43_PHYTYPE_B:
3125 if ((radio_ver & 0xFFF0) != 0x2050)
3126 unsupported = 1;
3127 break;
3128 case B43_PHYTYPE_G:
3129 if (radio_ver != 0x2050)
3130 unsupported = 1;
3131 break;
3132 default:
3133 B43_WARN_ON(1);
3134 }
3135 if (unsupported) {
3136 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3137 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3138 radio_manuf, radio_ver, radio_rev);
3139 return -EOPNOTSUPP;
3140 }
3141 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3142 radio_manuf, radio_ver, radio_rev);
3143
3144 phy->radio_manuf = radio_manuf;
3145 phy->radio_ver = radio_ver;
3146 phy->radio_rev = radio_rev;
3147
3148 phy->analog = analog_type;
3149 phy->type = phy_type;
3150 phy->rev = phy_rev;
3151
3152 return 0;
3153 }
3154
3155 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3156 struct b43_phy *phy)
3157 {
3158 struct b43_txpower_lo_control *lo;
3159 int i;
3160
3161 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3162 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3163
3164 /* Flags */
3165 phy->locked = 0;
3166
3167 phy->aci_enable = 0;
3168 phy->aci_wlan_automatic = 0;
3169 phy->aci_hw_rssi = 0;
3170
3171 phy->radio_off_context.valid = 0;
3172
3173 lo = phy->lo_control;
3174 if (lo) {
3175 memset(lo, 0, sizeof(*(phy->lo_control)));
3176 lo->rebuild = 1;
3177 lo->tx_bias = 0xFF;
3178 }
3179 phy->max_lb_gain = 0;
3180 phy->trsw_rx_gain = 0;
3181 phy->txpwr_offset = 0;
3182
3183 /* NRSSI */
3184 phy->nrssislope = 0;
3185 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3186 phy->nrssi[i] = -1000;
3187 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3188 phy->nrssi_lt[i] = i;
3189
3190 phy->lofcal = 0xFFFF;
3191 phy->initval = 0xFFFF;
3192
3193 spin_lock_init(&phy->lock);
3194 phy->interfmode = B43_INTERFMODE_NONE;
3195 phy->channel = 0xFF;
3196
3197 phy->hardware_power_control = !!modparam_hwpctl;
3198 }
3199
3200 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3201 {
3202 /* Flags */
3203 dev->reg124_set_0x4 = 0;
3204 /* Assume the radio is enabled. If it's not enabled, the state will
3205 * immediately get fixed on the first periodic work run. */
3206 dev->radio_hw_enable = 1;
3207
3208 /* Stats */
3209 memset(&dev->stats, 0, sizeof(dev->stats));
3210
3211 setup_struct_phy_for_init(dev, &dev->phy);
3212
3213 /* IRQ related flags */
3214 dev->irq_reason = 0;
3215 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3216 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3217
3218 dev->mac_suspended = 1;
3219
3220 /* Noise calculation context */
3221 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3222 }
3223
3224 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3225 {
3226 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3227 u32 hf;
3228
3229 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3230 return;
3231 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3232 return;
3233
3234 hf = b43_hf_read(dev);
3235 if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3236 hf |= B43_HF_BTCOEXALT;
3237 else
3238 hf |= B43_HF_BTCOEX;
3239 b43_hf_write(dev, hf);
3240 //TODO
3241 }
3242
3243 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3244 { //TODO
3245 }
3246
3247 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3248 {
3249 #ifdef CONFIG_SSB_DRIVER_PCICORE
3250 struct ssb_bus *bus = dev->dev->bus;
3251 u32 tmp;
3252
3253 if (bus->pcicore.dev &&
3254 bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3255 bus->pcicore.dev->id.revision <= 5) {
3256 /* IMCFGLO timeouts workaround. */
3257 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3258 tmp &= ~SSB_IMCFGLO_REQTO;
3259 tmp &= ~SSB_IMCFGLO_SERTO;
3260 switch (bus->bustype) {
3261 case SSB_BUSTYPE_PCI:
3262 case SSB_BUSTYPE_PCMCIA:
3263 tmp |= 0x32;
3264 break;
3265 case SSB_BUSTYPE_SSB:
3266 tmp |= 0x53;
3267 break;
3268 }
3269 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3270 }
3271 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3272 }
3273
3274 /* Write the short and long frame retry limit values. */
3275 static void b43_set_retry_limits(struct b43_wldev *dev,
3276 unsigned int short_retry,
3277 unsigned int long_retry)
3278 {
3279 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3280 * the chip-internal counter. */
3281 short_retry = min(short_retry, (unsigned int)0xF);
3282 long_retry = min(long_retry, (unsigned int)0xF);
3283
3284 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3285 short_retry);
3286 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3287 long_retry);
3288 }
3289
3290 /* Shutdown a wireless core */
3291 /* Locking: wl->mutex */
3292 static void b43_wireless_core_exit(struct b43_wldev *dev)
3293 {
3294 struct b43_phy *phy = &dev->phy;
3295
3296 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3297 if (b43_status(dev) != B43_STAT_INITIALIZED)
3298 return;
3299 b43_set_status(dev, B43_STAT_UNINIT);
3300
3301 b43_leds_exit(dev);
3302 b43_rng_exit(dev->wl);
3303 b43_pio_free(dev);
3304 b43_dma_free(dev);
3305 b43_chip_exit(dev);
3306 b43_radio_turn_off(dev, 1);
3307 b43_switch_analog(dev, 0);
3308 if (phy->dyn_tssi_tbl)
3309 kfree(phy->tssi2dbm);
3310 kfree(phy->lo_control);
3311 phy->lo_control = NULL;
3312 ssb_device_disable(dev->dev, 0);
3313 ssb_bus_may_powerdown(dev->dev->bus);
3314 }
3315
3316 /* Initialize a wireless core */
3317 static int b43_wireless_core_init(struct b43_wldev *dev)
3318 {
3319 struct b43_wl *wl = dev->wl;
3320 struct ssb_bus *bus = dev->dev->bus;
3321 struct ssb_sprom *sprom = &bus->sprom;
3322 struct b43_phy *phy = &dev->phy;
3323 int err;
3324 u32 hf, tmp;
3325
3326 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3327
3328 err = ssb_bus_powerup(bus, 0);
3329 if (err)
3330 goto out;
3331 if (!ssb_device_is_enabled(dev->dev)) {
3332 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3333 b43_wireless_core_reset(dev, tmp);
3334 }
3335
3336 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3337 phy->lo_control =
3338 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3339 if (!phy->lo_control) {
3340 err = -ENOMEM;
3341 goto err_busdown;
3342 }
3343 }
3344 setup_struct_wldev_for_init(dev);
3345
3346 err = b43_phy_init_tssi2dbm_table(dev);
3347 if (err)
3348 goto err_kfree_lo_control;
3349
3350 /* Enable IRQ routing to this device. */
3351 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3352
3353 b43_imcfglo_timeouts_workaround(dev);
3354 b43_bluetooth_coext_disable(dev);
3355 b43_phy_early_init(dev);
3356 err = b43_chip_init(dev);
3357 if (err)
3358 goto err_kfree_tssitbl;
3359 b43_shm_write16(dev, B43_SHM_SHARED,
3360 B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3361 hf = b43_hf_read(dev);
3362 if (phy->type == B43_PHYTYPE_G) {
3363 hf |= B43_HF_SYMW;
3364 if (phy->rev == 1)
3365 hf |= B43_HF_GDCW;
3366 if (sprom->boardflags_lo & B43_BFL_PACTRL)
3367 hf |= B43_HF_OFDMPABOOST;
3368 } else if (phy->type == B43_PHYTYPE_B) {
3369 hf |= B43_HF_SYMW;
3370 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3371 hf &= ~B43_HF_GDCW;
3372 }
3373 b43_hf_write(dev, hf);
3374
3375 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
3376 B43_DEFAULT_LONG_RETRY_LIMIT);
3377 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3378 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3379
3380 /* Disable sending probe responses from firmware.
3381 * Setting the MaxTime to one usec will always trigger
3382 * a timeout, so we never send any probe resp.
3383 * A timeout of zero is infinite. */
3384 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3385
3386 b43_rate_memory_init(dev);
3387
3388 /* Minimum Contention Window */
3389 if (phy->type == B43_PHYTYPE_B) {
3390 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3391 } else {
3392 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3393 }
3394 /* Maximum Contention Window */
3395 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3396
3397 do {
3398 if (b43_using_pio(dev)) {
3399 err = b43_pio_init(dev);
3400 } else {
3401 err = b43_dma_init(dev);
3402 if (!err)
3403 b43_qos_init(dev);
3404 }
3405 } while (err == -EAGAIN);
3406 if (err)
3407 goto err_chip_exit;
3408
3409 //FIXME
3410 #if 1
3411 b43_write16(dev, 0x0612, 0x0050);
3412 b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
3413 b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
3414 #endif
3415
3416 b43_bluetooth_coext_enable(dev);
3417
3418 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3419 memset(wl->bssid, 0, ETH_ALEN);
3420 memset(wl->mac_addr, 0, ETH_ALEN);
3421 b43_upload_card_macaddress(dev);
3422 b43_security_init(dev);
3423 b43_rng_init(wl);
3424
3425 b43_set_status(dev, B43_STAT_INITIALIZED);
3426
3427 b43_leds_init(dev);
3428 out:
3429 return err;
3430
3431 err_chip_exit:
3432 b43_chip_exit(dev);
3433 err_kfree_tssitbl:
3434 if (phy->dyn_tssi_tbl)
3435 kfree(phy->tssi2dbm);
3436 err_kfree_lo_control:
3437 kfree(phy->lo_control);
3438 phy->lo_control = NULL;
3439 err_busdown:
3440 ssb_bus_may_powerdown(bus);
3441 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3442 return err;
3443 }
3444
3445 static int b43_op_add_interface(struct ieee80211_hw *hw,
3446 struct ieee80211_if_init_conf *conf)
3447 {
3448 struct b43_wl *wl = hw_to_b43_wl(hw);
3449 struct b43_wldev *dev;
3450 unsigned long flags;
3451 int err = -EOPNOTSUPP;
3452
3453 /* TODO: allow WDS/AP devices to coexist */
3454
3455 if (conf->type != IEEE80211_IF_TYPE_AP &&
3456 conf->type != IEEE80211_IF_TYPE_STA &&
3457 conf->type != IEEE80211_IF_TYPE_WDS &&
3458 conf->type != IEEE80211_IF_TYPE_IBSS)
3459 return -EOPNOTSUPP;
3460
3461 mutex_lock(&wl->mutex);
3462 if (wl->operating)
3463 goto out_mutex_unlock;
3464
3465 b43dbg(wl, "Adding Interface type %d\n", conf->type);
3466
3467 dev = wl->current_dev;
3468 wl->operating = 1;
3469 wl->if_id = conf->if_id;
3470 wl->if_type = conf->type;
3471 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3472
3473 spin_lock_irqsave(&wl->irq_lock, flags);
3474 b43_adjust_opmode(dev);
3475 b43_upload_card_macaddress(dev);
3476 spin_unlock_irqrestore(&wl->irq_lock, flags);
3477
3478 err = 0;
3479 out_mutex_unlock:
3480 mutex_unlock(&wl->mutex);
3481
3482 return err;
3483 }
3484
3485 static void b43_op_remove_interface(struct ieee80211_hw *hw,
3486 struct ieee80211_if_init_conf *conf)
3487 {
3488 struct b43_wl *wl = hw_to_b43_wl(hw);
3489 struct b43_wldev *dev = wl->current_dev;
3490 unsigned long flags;
3491
3492 b43dbg(wl, "Removing Interface type %d\n", conf->type);
3493
3494 mutex_lock(&wl->mutex);
3495
3496 B43_WARN_ON(!wl->operating);
3497 B43_WARN_ON(wl->if_id != conf->if_id);
3498
3499 wl->operating = 0;
3500
3501 spin_lock_irqsave(&wl->irq_lock, flags);
3502 b43_adjust_opmode(dev);
3503 memset(wl->mac_addr, 0, ETH_ALEN);
3504 b43_upload_card_macaddress(dev);
3505 spin_unlock_irqrestore(&wl->irq_lock, flags);
3506
3507 mutex_unlock(&wl->mutex);
3508 }
3509
3510 static int b43_op_start(struct ieee80211_hw *hw)
3511 {
3512 struct b43_wl *wl = hw_to_b43_wl(hw);
3513 struct b43_wldev *dev = wl->current_dev;
3514 int did_init = 0;
3515 int err = 0;
3516
3517 /* First register RFkill.
3518 * LEDs that are registered later depend on it. */
3519 b43_rfkill_init(dev);
3520
3521 mutex_lock(&wl->mutex);
3522
3523 if (b43_status(dev) < B43_STAT_INITIALIZED) {
3524 err = b43_wireless_core_init(dev);
3525 if (err)
3526 goto out_mutex_unlock;
3527 did_init = 1;
3528 }
3529
3530 if (b43_status(dev) < B43_STAT_STARTED) {
3531 err = b43_wireless_core_start(dev);
3532 if (err) {
3533 if (did_init)
3534 b43_wireless_core_exit(dev);
3535 goto out_mutex_unlock;
3536 }
3537 }
3538
3539 out_mutex_unlock:
3540 mutex_unlock(&wl->mutex);
3541
3542 return err;
3543 }
3544
3545 static void b43_op_stop(struct ieee80211_hw *hw)
3546 {
3547 struct b43_wl *wl = hw_to_b43_wl(hw);
3548 struct b43_wldev *dev = wl->current_dev;
3549
3550 b43_rfkill_exit(dev);
3551
3552 mutex_lock(&wl->mutex);
3553 if (b43_status(dev) >= B43_STAT_STARTED)
3554 b43_wireless_core_stop(dev);
3555 b43_wireless_core_exit(dev);
3556 mutex_unlock(&wl->mutex);
3557 }
3558
3559 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
3560 u32 short_retry_limit, u32 long_retry_limit)
3561 {
3562 struct b43_wl *wl = hw_to_b43_wl(hw);
3563 struct b43_wldev *dev;
3564 int err = 0;
3565
3566 mutex_lock(&wl->mutex);
3567 dev = wl->current_dev;
3568 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
3569 err = -ENODEV;
3570 goto out_unlock;
3571 }
3572 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
3573 out_unlock:
3574 mutex_unlock(&wl->mutex);
3575
3576 return err;
3577 }
3578
3579 static const struct ieee80211_ops b43_hw_ops = {
3580 .tx = b43_op_tx,
3581 .conf_tx = b43_op_conf_tx,
3582 .add_interface = b43_op_add_interface,
3583 .remove_interface = b43_op_remove_interface,
3584 .config = b43_op_config,
3585 .config_interface = b43_op_config_interface,
3586 .configure_filter = b43_op_configure_filter,
3587 .set_key = b43_op_set_key,
3588 .get_stats = b43_op_get_stats,
3589 .get_tx_stats = b43_op_get_tx_stats,
3590 .start = b43_op_start,
3591 .stop = b43_op_stop,
3592 .set_retry_limit = b43_op_set_retry_limit,
3593 };
3594
3595 /* Hard-reset the chip. Do not call this directly.
3596 * Use b43_controller_restart()
3597 */
3598 static void b43_chip_reset(struct work_struct *work)
3599 {
3600 struct b43_wldev *dev =
3601 container_of(work, struct b43_wldev, restart_work);
3602 struct b43_wl *wl = dev->wl;
3603 int err = 0;
3604 int prev_status;
3605
3606 mutex_lock(&wl->mutex);
3607
3608 prev_status = b43_status(dev);
3609 /* Bring the device down... */
3610 if (prev_status >= B43_STAT_STARTED)
3611 b43_wireless_core_stop(dev);
3612 if (prev_status >= B43_STAT_INITIALIZED)
3613 b43_wireless_core_exit(dev);
3614
3615 /* ...and up again. */
3616 if (prev_status >= B43_STAT_INITIALIZED) {
3617 err = b43_wireless_core_init(dev);
3618 if (err)
3619 goto out;
3620 }
3621 if (prev_status >= B43_STAT_STARTED) {
3622 err = b43_wireless_core_start(dev);
3623 if (err) {
3624 b43_wireless_core_exit(dev);
3625 goto out;
3626 }
3627 }
3628 out:
3629 mutex_unlock(&wl->mutex);
3630 if (err)
3631 b43err(wl, "Controller restart FAILED\n");
3632 else
3633 b43info(wl, "Controller restarted\n");
3634 }
3635
3636 static int b43_setup_modes(struct b43_wldev *dev,
3637 int have_aphy, int have_bphy, int have_gphy)
3638 {
3639 struct ieee80211_hw *hw = dev->wl->hw;
3640 struct ieee80211_hw_mode *mode;
3641 struct b43_phy *phy = &dev->phy;
3642 int cnt = 0;
3643 int err;
3644
3645 /*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */
3646 have_aphy = 0;
3647
3648 phy->possible_phymodes = 0;
3649 for (; 1; cnt++) {
3650 if (have_aphy) {
3651 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3652 mode = &phy->hwmodes[cnt];
3653
3654 mode->mode = MODE_IEEE80211A;
3655 mode->num_channels = b43_a_chantable_size;
3656 mode->channels = b43_a_chantable;
3657 mode->num_rates = b43_a_ratetable_size;
3658 mode->rates = b43_a_ratetable;
3659 err = ieee80211_register_hwmode(hw, mode);
3660 if (err)
3661 return err;
3662
3663 phy->possible_phymodes |= B43_PHYMODE_A;
3664 have_aphy = 0;
3665 continue;
3666 }
3667 if (have_bphy) {
3668 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3669 mode = &phy->hwmodes[cnt];
3670
3671 mode->mode = MODE_IEEE80211B;
3672 mode->num_channels = b43_bg_chantable_size;
3673 mode->channels = b43_bg_chantable;
3674 mode->num_rates = b43_b_ratetable_size;
3675 mode->rates = b43_b_ratetable;
3676 err = ieee80211_register_hwmode(hw, mode);
3677 if (err)
3678 return err;
3679
3680 phy->possible_phymodes |= B43_PHYMODE_B;
3681 have_bphy = 0;
3682 continue;
3683 }
3684 if (have_gphy) {
3685 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3686 mode = &phy->hwmodes[cnt];
3687
3688 mode->mode = MODE_IEEE80211G;
3689 mode->num_channels = b43_bg_chantable_size;
3690 mode->channels = b43_bg_chantable;
3691 mode->num_rates = b43_g_ratetable_size;
3692 mode->rates = b43_g_ratetable;
3693 err = ieee80211_register_hwmode(hw, mode);
3694 if (err)
3695 return err;
3696
3697 phy->possible_phymodes |= B43_PHYMODE_G;
3698 have_gphy = 0;
3699 continue;
3700 }
3701 break;
3702 }
3703
3704 return 0;
3705 }
3706
3707 static void b43_wireless_core_detach(struct b43_wldev *dev)
3708 {
3709 /* We release firmware that late to not be required to re-request
3710 * is all the time when we reinit the core. */
3711 b43_release_firmware(dev);
3712 }
3713
3714 static int b43_wireless_core_attach(struct b43_wldev *dev)
3715 {
3716 struct b43_wl *wl = dev->wl;
3717 struct ssb_bus *bus = dev->dev->bus;
3718 struct pci_dev *pdev = bus->host_pci;
3719 int err;
3720 int have_aphy = 0, have_bphy = 0, have_gphy = 0;
3721 u32 tmp;
3722
3723 /* Do NOT do any device initialization here.
3724 * Do it in wireless_core_init() instead.
3725 * This function is for gathering basic information about the HW, only.
3726 * Also some structs may be set up here. But most likely you want to have
3727 * that in core_init(), too.
3728 */
3729
3730 err = ssb_bus_powerup(bus, 0);
3731 if (err) {
3732 b43err(wl, "Bus powerup failed\n");
3733 goto out;
3734 }
3735 /* Get the PHY type. */
3736 if (dev->dev->id.revision >= 5) {
3737 u32 tmshigh;
3738
3739 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3740 have_aphy = !!(tmshigh & B43_TMSHIGH_APHY);
3741 have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY);
3742 if (!have_aphy && !have_gphy)
3743 have_bphy = 1;
3744 } else if (dev->dev->id.revision == 4) {
3745 have_gphy = 1;
3746 have_aphy = 1;
3747 } else
3748 have_bphy = 1;
3749
3750 dev->phy.gmode = (have_gphy || have_bphy);
3751 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3752 b43_wireless_core_reset(dev, tmp);
3753
3754 err = b43_phy_versioning(dev);
3755 if (err)
3756 goto err_powerdown;
3757 /* Check if this device supports multiband. */
3758 if (!pdev ||
3759 (pdev->device != 0x4312 &&
3760 pdev->device != 0x4319 && pdev->device != 0x4324)) {
3761 /* No multiband support. */
3762 have_aphy = 0;
3763 have_bphy = 0;
3764 have_gphy = 0;
3765 switch (dev->phy.type) {
3766 case B43_PHYTYPE_A:
3767 have_aphy = 1;
3768 break;
3769 case B43_PHYTYPE_B:
3770 have_bphy = 1;
3771 break;
3772 case B43_PHYTYPE_G:
3773 have_gphy = 1;
3774 break;
3775 default:
3776 B43_WARN_ON(1);
3777 }
3778 }
3779 dev->phy.gmode = (have_gphy || have_bphy);
3780 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3781 b43_wireless_core_reset(dev, tmp);
3782
3783 err = b43_validate_chipaccess(dev);
3784 if (err)
3785 goto err_powerdown;
3786 err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy);
3787 if (err)
3788 goto err_powerdown;
3789
3790 /* Now set some default "current_dev" */
3791 if (!wl->current_dev)
3792 wl->current_dev = dev;
3793 INIT_WORK(&dev->restart_work, b43_chip_reset);
3794
3795 b43_radio_turn_off(dev, 1);
3796 b43_switch_analog(dev, 0);
3797 ssb_device_disable(dev->dev, 0);
3798 ssb_bus_may_powerdown(bus);
3799
3800 out:
3801 return err;
3802
3803 err_powerdown:
3804 ssb_bus_may_powerdown(bus);
3805 return err;
3806 }
3807
3808 static void b43_one_core_detach(struct ssb_device *dev)
3809 {
3810 struct b43_wldev *wldev;
3811 struct b43_wl *wl;
3812
3813 wldev = ssb_get_drvdata(dev);
3814 wl = wldev->wl;
3815 cancel_work_sync(&wldev->restart_work);
3816 b43_debugfs_remove_device(wldev);
3817 b43_wireless_core_detach(wldev);
3818 list_del(&wldev->list);
3819 wl->nr_devs--;
3820 ssb_set_drvdata(dev, NULL);
3821 kfree(wldev);
3822 }
3823
3824 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
3825 {
3826 struct b43_wldev *wldev;
3827 struct pci_dev *pdev;
3828 int err = -ENOMEM;
3829
3830 if (!list_empty(&wl->devlist)) {
3831 /* We are not the first core on this chip. */
3832 pdev = dev->bus->host_pci;
3833 /* Only special chips support more than one wireless
3834 * core, although some of the other chips have more than
3835 * one wireless core as well. Check for this and
3836 * bail out early.
3837 */
3838 if (!pdev ||
3839 ((pdev->device != 0x4321) &&
3840 (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
3841 b43dbg(wl, "Ignoring unconnected 802.11 core\n");
3842 return -ENODEV;
3843 }
3844 }
3845
3846 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3847 if (!wldev)
3848 goto out;
3849
3850 wldev->dev = dev;
3851 wldev->wl = wl;
3852 b43_set_status(wldev, B43_STAT_UNINIT);
3853 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3854 tasklet_init(&wldev->isr_tasklet,
3855 (void (*)(unsigned long))b43_interrupt_tasklet,
3856 (unsigned long)wldev);
3857 if (modparam_pio)
3858 wldev->__using_pio = 1;
3859 INIT_LIST_HEAD(&wldev->list);
3860
3861 err = b43_wireless_core_attach(wldev);
3862 if (err)
3863 goto err_kfree_wldev;
3864
3865 list_add(&wldev->list, &wl->devlist);
3866 wl->nr_devs++;
3867 ssb_set_drvdata(dev, wldev);
3868 b43_debugfs_add_device(wldev);
3869
3870 out:
3871 return err;
3872
3873 err_kfree_wldev:
3874 kfree(wldev);
3875 return err;
3876 }
3877
3878 static void b43_sprom_fixup(struct ssb_bus *bus)
3879 {
3880 /* boardflags workarounds */
3881 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
3882 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
3883 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
3884 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3885 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
3886 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
3887
3888 /* Handle case when gain is not set in sprom */
3889 if (bus->sprom.antenna_gain_a == 0xFF)
3890 bus->sprom.antenna_gain_a = 2;
3891 if (bus->sprom.antenna_gain_bg == 0xFF)
3892 bus->sprom.antenna_gain_bg = 2;
3893
3894 /* Convert Antennagain values to Q5.2 */
3895 bus->sprom.antenna_gain_a <<= 2;
3896 bus->sprom.antenna_gain_bg <<= 2;
3897 }
3898
3899 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
3900 {
3901 struct ieee80211_hw *hw = wl->hw;
3902
3903 ssb_set_devtypedata(dev, NULL);
3904 ieee80211_free_hw(hw);
3905 }
3906
3907 static int b43_wireless_init(struct ssb_device *dev)
3908 {
3909 struct ssb_sprom *sprom = &dev->bus->sprom;
3910 struct ieee80211_hw *hw;
3911 struct b43_wl *wl;
3912 int err = -ENOMEM;
3913
3914 b43_sprom_fixup(dev->bus);
3915
3916 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
3917 if (!hw) {
3918 b43err(NULL, "Could not allocate ieee80211 device\n");
3919 goto out;
3920 }
3921
3922 /* fill hw info */
3923 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
3924 IEEE80211_HW_RX_INCLUDES_FCS;
3925 hw->max_signal = 100;
3926 hw->max_rssi = -110;
3927 hw->max_noise = -110;
3928 hw->queues = 1; /* FIXME: hardware has more queues */
3929 SET_IEEE80211_DEV(hw, dev->dev);
3930 if (is_valid_ether_addr(sprom->et1mac))
3931 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3932 else
3933 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3934
3935 /* Get and initialize struct b43_wl */
3936 wl = hw_to_b43_wl(hw);
3937 memset(wl, 0, sizeof(*wl));
3938 wl->hw = hw;
3939 spin_lock_init(&wl->irq_lock);
3940 spin_lock_init(&wl->leds_lock);
3941 mutex_init(&wl->mutex);
3942 INIT_LIST_HEAD(&wl->devlist);
3943
3944 ssb_set_devtypedata(dev, wl);
3945 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
3946 err = 0;
3947 out:
3948 return err;
3949 }
3950
3951 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
3952 {
3953 struct b43_wl *wl;
3954 int err;
3955 int first = 0;
3956
3957 wl = ssb_get_devtypedata(dev);
3958 if (!wl) {
3959 /* Probing the first core. Must setup common struct b43_wl */
3960 first = 1;
3961 err = b43_wireless_init(dev);
3962 if (err)
3963 goto out;
3964 wl = ssb_get_devtypedata(dev);
3965 B43_WARN_ON(!wl);
3966 }
3967 err = b43_one_core_attach(dev, wl);
3968 if (err)
3969 goto err_wireless_exit;
3970
3971 if (first) {
3972 err = ieee80211_register_hw(wl->hw);
3973 if (err)
3974 goto err_one_core_detach;
3975 }
3976
3977 out:
3978 return err;
3979
3980 err_one_core_detach:
3981 b43_one_core_detach(dev);
3982 err_wireless_exit:
3983 if (first)
3984 b43_wireless_exit(dev, wl);
3985 return err;
3986 }
3987
3988 static void b43_remove(struct ssb_device *dev)
3989 {
3990 struct b43_wl *wl = ssb_get_devtypedata(dev);
3991 struct b43_wldev *wldev = ssb_get_drvdata(dev);
3992
3993 B43_WARN_ON(!wl);
3994 if (wl->current_dev == wldev)
3995 ieee80211_unregister_hw(wl->hw);
3996
3997 b43_one_core_detach(dev);
3998
3999 if (list_empty(&wl->devlist)) {
4000 /* Last core on the chip unregistered.
4001 * We can destroy common struct b43_wl.
4002 */
4003 b43_wireless_exit(dev, wl);
4004 }
4005 }
4006
4007 /* Perform a hardware reset. This can be called from any context. */
4008 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4009 {
4010 /* Must avoid requeueing, if we are in shutdown. */
4011 if (b43_status(dev) < B43_STAT_INITIALIZED)
4012 return;
4013 b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4014 queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4015 }
4016
4017 #ifdef CONFIG_PM
4018
4019 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4020 {
4021 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4022 struct b43_wl *wl = wldev->wl;
4023
4024 b43dbg(wl, "Suspending...\n");
4025
4026 mutex_lock(&wl->mutex);
4027 wldev->suspend_init_status = b43_status(wldev);
4028 if (wldev->suspend_init_status >= B43_STAT_STARTED)
4029 b43_wireless_core_stop(wldev);
4030 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4031 b43_wireless_core_exit(wldev);
4032 mutex_unlock(&wl->mutex);
4033
4034 b43dbg(wl, "Device suspended.\n");
4035
4036 return 0;
4037 }
4038
4039 static int b43_resume(struct ssb_device *dev)
4040 {
4041 struct b43_wldev *wldev = ssb_get_drvdata(dev);
4042 struct b43_wl *wl = wldev->wl;
4043 int err = 0;
4044
4045 b43dbg(wl, "Resuming...\n");
4046
4047 mutex_lock(&wl->mutex);
4048 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4049 err = b43_wireless_core_init(wldev);
4050 if (err) {
4051 b43err(wl, "Resume failed at core init\n");
4052 goto out;
4053 }
4054 }
4055 if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4056 err = b43_wireless_core_start(wldev);
4057 if (err) {
4058 b43_wireless_core_exit(wldev);
4059 b43err(wl, "Resume failed at core start\n");
4060 goto out;
4061 }
4062 }
4063 mutex_unlock(&wl->mutex);
4064
4065 b43dbg(wl, "Device resumed.\n");
4066 out:
4067 return err;
4068 }
4069
4070 #else /* CONFIG_PM */
4071 # define b43_suspend NULL
4072 # define b43_resume NULL
4073 #endif /* CONFIG_PM */
4074
4075 static struct ssb_driver b43_ssb_driver = {
4076 .name = KBUILD_MODNAME,
4077 .id_table = b43_ssb_tbl,
4078 .probe = b43_probe,
4079 .remove = b43_remove,
4080 .suspend = b43_suspend,
4081 .resume = b43_resume,
4082 };
4083
4084 static int __init b43_init(void)
4085 {
4086 int err;
4087
4088 b43_debugfs_init();
4089 err = b43_pcmcia_init();
4090 if (err)
4091 goto err_dfs_exit;
4092 err = ssb_driver_register(&b43_ssb_driver);
4093 if (err)
4094 goto err_pcmcia_exit;
4095
4096 return err;
4097
4098 err_pcmcia_exit:
4099 b43_pcmcia_exit();
4100 err_dfs_exit:
4101 b43_debugfs_exit();
4102 return err;
4103 }
4104
4105 static void __exit b43_exit(void)
4106 {
4107 ssb_driver_unregister(&b43_ssb_driver);
4108 b43_pcmcia_exit();
4109 b43_debugfs_exit();
4110 }
4111
4112 module_init(b43_init)
4113 module_exit(b43_exit)
AMDTP streaming driver for the Linux FireWire stack (Juju)