1 /*
2 *
3 * Broadcom B43legacy wireless driver
4 *
5 * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
6 * Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it>
7 * Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch>
8 * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10 * Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
11 *
12 * Some parts of the code in this file are derived from the ipw2200
13 * driver Copyright(c) 2003 - 2004 Intel Corporation.
14
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; see the file COPYING. If not, write to
27 * the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
28 * Boston, MA 02110-1301, USA.
29 *
30 */
31
32 #include <linux/delay.h>
33 #include <linux/init.h>
34 #include <linux/module.h>
35 #include <linux/if_arp.h>
36 #include <linux/etherdevice.h>
37 #include <linux/firmware.h>
38 #include <linux/workqueue.h>
39 #include <linux/sched.h>
40 #include <linux/skbuff.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/slab.h>
43 #include <net/dst.h>
44 #include <asm/unaligned.h>
45
46 #include "b43legacy.h"
47 #include "main.h"
48 #include "debugfs.h"
49 #include "phy.h"
50 #include "dma.h"
51 #include "pio.h"
52 #include "sysfs.h"
53 #include "xmit.h"
54 #include "radio.h"
55
56
57 MODULE_DESCRIPTION("Broadcom B43legacy wireless driver");
58 MODULE_AUTHOR("Martin Langer");
59 MODULE_AUTHOR("Stefano Brivio");
60 MODULE_AUTHOR("Michael Buesch");
61 MODULE_LICENSE("GPL");
62
63 MODULE_FIRMWARE("b43legacy/ucode2.fw");
64 MODULE_FIRMWARE("b43legacy/ucode4.fw");
65
66 #if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
67 static int modparam_pio;
68 module_param_named(pio, modparam_pio, int, 0444);
69 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
70 #elif defined(CONFIG_B43LEGACY_DMA)
71 # define modparam_pio 0
72 #elif defined(CONFIG_B43LEGACY_PIO)
73 # define modparam_pio 1
74 #endif
75
76 static int modparam_bad_frames_preempt;
77 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
78 MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames"
79 " Preemption");
80
81 static char modparam_fwpostfix[16];
82 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
83 MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load.");
84
85 /* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */
86 static const struct ssb_device_id b43legacy_ssb_tbl[] = {
87 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2),
88 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4),
89 {},
90 };
91 MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl);
92
93
94 /* Channel and ratetables are shared for all devices.
95 * They can't be const, because ieee80211 puts some precalculated
96 * data in there. This data is the same for all devices, so we don't
97 * get concurrency issues */
98 #define RATETAB_ENT(_rateid, _flags) \
99 { \
100 .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \
101 .hw_value = (_rateid), \
102 .flags = (_flags), \
103 }
104 /*
105 * NOTE: When changing this, sync with xmit.c's
106 * b43legacy_plcp_get_bitrate_idx_* functions!
107 */
108 static struct ieee80211_rate __b43legacy_ratetable[] = {
109 RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0),
110 RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
111 RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
112 RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
113 RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0),
114 RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0),
115 RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0),
116 RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0),
117 RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0),
118 RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0),
119 RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0),
120 RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0),
121 };
122 #define b43legacy_b_ratetable (__b43legacy_ratetable + 0)
123 #define b43legacy_b_ratetable_size 4
124 #define b43legacy_g_ratetable (__b43legacy_ratetable + 0)
125 #define b43legacy_g_ratetable_size 12
126
127 #define CHANTAB_ENT(_chanid, _freq) \
128 { \
129 .center_freq = (_freq), \
130 .hw_value = (_chanid), \
131 }
132 static struct ieee80211_channel b43legacy_bg_chantable[] = {
133 CHANTAB_ENT(1, 2412),
134 CHANTAB_ENT(2, 2417),
135 CHANTAB_ENT(3, 2422),
136 CHANTAB_ENT(4, 2427),
137 CHANTAB_ENT(5, 2432),
138 CHANTAB_ENT(6, 2437),
139 CHANTAB_ENT(7, 2442),
140 CHANTAB_ENT(8, 2447),
141 CHANTAB_ENT(9, 2452),
142 CHANTAB_ENT(10, 2457),
143 CHANTAB_ENT(11, 2462),
144 CHANTAB_ENT(12, 2467),
145 CHANTAB_ENT(13, 2472),
146 CHANTAB_ENT(14, 2484),
147 };
148
149 static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = {
150 .channels = b43legacy_bg_chantable,
151 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
152 .bitrates = b43legacy_b_ratetable,
153 .n_bitrates = b43legacy_b_ratetable_size,
154 };
155
156 static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = {
157 .channels = b43legacy_bg_chantable,
158 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable),
159 .bitrates = b43legacy_g_ratetable,
160 .n_bitrates = b43legacy_g_ratetable_size,
161 };
162
163 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev);
164 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev);
165 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev);
166 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev);
167
168
b43legacy_ratelimit(struct b43legacy_wl * wl)169 static int b43legacy_ratelimit(struct b43legacy_wl *wl)
170 {
171 if (!wl || !wl->current_dev)
172 return 1;
173 if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED)
174 return 1;
175 /* We are up and running.
176 * Ratelimit the messages to avoid DoS over the net. */
177 return net_ratelimit();
178 }
179
b43legacyinfo(struct b43legacy_wl * wl,const char * fmt,...)180 void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...)
181 {
182 struct va_format vaf;
183 va_list args;
184
185 if (!b43legacy_ratelimit(wl))
186 return;
187
188 va_start(args, fmt);
189
190 vaf.fmt = fmt;
191 vaf.va = &args;
192
193 printk(KERN_INFO "b43legacy-%s: %pV",
194 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
195
196 va_end(args);
197 }
198
b43legacyerr(struct b43legacy_wl * wl,const char * fmt,...)199 void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...)
200 {
201 struct va_format vaf;
202 va_list args;
203
204 if (!b43legacy_ratelimit(wl))
205 return;
206
207 va_start(args, fmt);
208
209 vaf.fmt = fmt;
210 vaf.va = &args;
211
212 printk(KERN_ERR "b43legacy-%s ERROR: %pV",
213 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
214
215 va_end(args);
216 }
217
b43legacywarn(struct b43legacy_wl * wl,const char * fmt,...)218 void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...)
219 {
220 struct va_format vaf;
221 va_list args;
222
223 if (!b43legacy_ratelimit(wl))
224 return;
225
226 va_start(args, fmt);
227
228 vaf.fmt = fmt;
229 vaf.va = &args;
230
231 printk(KERN_WARNING "b43legacy-%s warning: %pV",
232 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
233
234 va_end(args);
235 }
236
237 #if B43legacy_DEBUG
b43legacydbg(struct b43legacy_wl * wl,const char * fmt,...)238 void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...)
239 {
240 struct va_format vaf;
241 va_list args;
242
243 va_start(args, fmt);
244
245 vaf.fmt = fmt;
246 vaf.va = &args;
247
248 printk(KERN_DEBUG "b43legacy-%s debug: %pV",
249 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
250
251 va_end(args);
252 }
253 #endif /* DEBUG */
254
b43legacy_ram_write(struct b43legacy_wldev * dev,u16 offset,u32 val)255 static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset,
256 u32 val)
257 {
258 u32 status;
259
260 B43legacy_WARN_ON(offset % 4 != 0);
261
262 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
263 if (status & B43legacy_MACCTL_BE)
264 val = swab32(val);
265
266 b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset);
267 mmiowb();
268 b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val);
269 }
270
271 static inline
b43legacy_shm_control_word(struct b43legacy_wldev * dev,u16 routing,u16 offset)272 void b43legacy_shm_control_word(struct b43legacy_wldev *dev,
273 u16 routing, u16 offset)
274 {
275 u32 control;
276
277 /* "offset" is the WORD offset. */
278
279 control = routing;
280 control <<= 16;
281 control |= offset;
282 b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control);
283 }
284
b43legacy_shm_read32(struct b43legacy_wldev * dev,u16 routing,u16 offset)285 u32 b43legacy_shm_read32(struct b43legacy_wldev *dev,
286 u16 routing, u16 offset)
287 {
288 u32 ret;
289
290 if (routing == B43legacy_SHM_SHARED) {
291 B43legacy_WARN_ON((offset & 0x0001) != 0);
292 if (offset & 0x0003) {
293 /* Unaligned access */
294 b43legacy_shm_control_word(dev, routing, offset >> 2);
295 ret = b43legacy_read16(dev,
296 B43legacy_MMIO_SHM_DATA_UNALIGNED);
297 ret <<= 16;
298 b43legacy_shm_control_word(dev, routing,
299 (offset >> 2) + 1);
300 ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
301
302 return ret;
303 }
304 offset >>= 2;
305 }
306 b43legacy_shm_control_word(dev, routing, offset);
307 ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA);
308
309 return ret;
310 }
311
b43legacy_shm_read16(struct b43legacy_wldev * dev,u16 routing,u16 offset)312 u16 b43legacy_shm_read16(struct b43legacy_wldev *dev,
313 u16 routing, u16 offset)
314 {
315 u16 ret;
316
317 if (routing == B43legacy_SHM_SHARED) {
318 B43legacy_WARN_ON((offset & 0x0001) != 0);
319 if (offset & 0x0003) {
320 /* Unaligned access */
321 b43legacy_shm_control_word(dev, routing, offset >> 2);
322 ret = b43legacy_read16(dev,
323 B43legacy_MMIO_SHM_DATA_UNALIGNED);
324
325 return ret;
326 }
327 offset >>= 2;
328 }
329 b43legacy_shm_control_word(dev, routing, offset);
330 ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA);
331
332 return ret;
333 }
334
b43legacy_shm_write32(struct b43legacy_wldev * dev,u16 routing,u16 offset,u32 value)335 void b43legacy_shm_write32(struct b43legacy_wldev *dev,
336 u16 routing, u16 offset,
337 u32 value)
338 {
339 if (routing == B43legacy_SHM_SHARED) {
340 B43legacy_WARN_ON((offset & 0x0001) != 0);
341 if (offset & 0x0003) {
342 /* Unaligned access */
343 b43legacy_shm_control_word(dev, routing, offset >> 2);
344 mmiowb();
345 b43legacy_write16(dev,
346 B43legacy_MMIO_SHM_DATA_UNALIGNED,
347 (value >> 16) & 0xffff);
348 mmiowb();
349 b43legacy_shm_control_word(dev, routing,
350 (offset >> 2) + 1);
351 mmiowb();
352 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA,
353 value & 0xffff);
354 return;
355 }
356 offset >>= 2;
357 }
358 b43legacy_shm_control_word(dev, routing, offset);
359 mmiowb();
360 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value);
361 }
362
b43legacy_shm_write16(struct b43legacy_wldev * dev,u16 routing,u16 offset,u16 value)363 void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset,
364 u16 value)
365 {
366 if (routing == B43legacy_SHM_SHARED) {
367 B43legacy_WARN_ON((offset & 0x0001) != 0);
368 if (offset & 0x0003) {
369 /* Unaligned access */
370 b43legacy_shm_control_word(dev, routing, offset >> 2);
371 mmiowb();
372 b43legacy_write16(dev,
373 B43legacy_MMIO_SHM_DATA_UNALIGNED,
374 value);
375 return;
376 }
377 offset >>= 2;
378 }
379 b43legacy_shm_control_word(dev, routing, offset);
380 mmiowb();
381 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value);
382 }
383
384 /* Read HostFlags */
b43legacy_hf_read(struct b43legacy_wldev * dev)385 u32 b43legacy_hf_read(struct b43legacy_wldev *dev)
386 {
387 u32 ret;
388
389 ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
390 B43legacy_SHM_SH_HOSTFHI);
391 ret <<= 16;
392 ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
393 B43legacy_SHM_SH_HOSTFLO);
394
395 return ret;
396 }
397
398 /* Write HostFlags */
b43legacy_hf_write(struct b43legacy_wldev * dev,u32 value)399 void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value)
400 {
401 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
402 B43legacy_SHM_SH_HOSTFLO,
403 (value & 0x0000FFFF));
404 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
405 B43legacy_SHM_SH_HOSTFHI,
406 ((value & 0xFFFF0000) >> 16));
407 }
408
b43legacy_tsf_read(struct b43legacy_wldev * dev,u64 * tsf)409 void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf)
410 {
411 /* We need to be careful. As we read the TSF from multiple
412 * registers, we should take care of register overflows.
413 * In theory, the whole tsf read process should be atomic.
414 * We try to be atomic here, by restaring the read process,
415 * if any of the high registers changed (overflew).
416 */
417 if (dev->dev->id.revision >= 3) {
418 u32 low;
419 u32 high;
420 u32 high2;
421
422 do {
423 high = b43legacy_read32(dev,
424 B43legacy_MMIO_REV3PLUS_TSF_HIGH);
425 low = b43legacy_read32(dev,
426 B43legacy_MMIO_REV3PLUS_TSF_LOW);
427 high2 = b43legacy_read32(dev,
428 B43legacy_MMIO_REV3PLUS_TSF_HIGH);
429 } while (unlikely(high != high2));
430
431 *tsf = high;
432 *tsf <<= 32;
433 *tsf |= low;
434 } else {
435 u64 tmp;
436 u16 v0;
437 u16 v1;
438 u16 v2;
439 u16 v3;
440 u16 test1;
441 u16 test2;
442 u16 test3;
443
444 do {
445 v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
446 v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
447 v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
448 v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0);
449
450 test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3);
451 test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2);
452 test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1);
453 } while (v3 != test3 || v2 != test2 || v1 != test1);
454
455 *tsf = v3;
456 *tsf <<= 48;
457 tmp = v2;
458 tmp <<= 32;
459 *tsf |= tmp;
460 tmp = v1;
461 tmp <<= 16;
462 *tsf |= tmp;
463 *tsf |= v0;
464 }
465 }
466
b43legacy_time_lock(struct b43legacy_wldev * dev)467 static void b43legacy_time_lock(struct b43legacy_wldev *dev)
468 {
469 u32 status;
470
471 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
472 status |= B43legacy_MACCTL_TBTTHOLD;
473 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
474 mmiowb();
475 }
476
b43legacy_time_unlock(struct b43legacy_wldev * dev)477 static void b43legacy_time_unlock(struct b43legacy_wldev *dev)
478 {
479 u32 status;
480
481 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
482 status &= ~B43legacy_MACCTL_TBTTHOLD;
483 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
484 }
485
b43legacy_tsf_write_locked(struct b43legacy_wldev * dev,u64 tsf)486 static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf)
487 {
488 /* Be careful with the in-progress timer.
489 * First zero out the low register, so we have a full
490 * register-overflow duration to complete the operation.
491 */
492 if (dev->dev->id.revision >= 3) {
493 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
494 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
495
496 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0);
497 mmiowb();
498 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH,
499 hi);
500 mmiowb();
501 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW,
502 lo);
503 } else {
504 u16 v0 = (tsf & 0x000000000000FFFFULL);
505 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
506 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
507 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
508
509 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0);
510 mmiowb();
511 b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3);
512 mmiowb();
513 b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2);
514 mmiowb();
515 b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1);
516 mmiowb();
517 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0);
518 }
519 }
520
b43legacy_tsf_write(struct b43legacy_wldev * dev,u64 tsf)521 void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf)
522 {
523 b43legacy_time_lock(dev);
524 b43legacy_tsf_write_locked(dev, tsf);
525 b43legacy_time_unlock(dev);
526 }
527
528 static
b43legacy_macfilter_set(struct b43legacy_wldev * dev,u16 offset,const u8 * mac)529 void b43legacy_macfilter_set(struct b43legacy_wldev *dev,
530 u16 offset, const u8 *mac)
531 {
532 static const u8 zero_addr[ETH_ALEN] = { 0 };
533 u16 data;
534
535 if (!mac)
536 mac = zero_addr;
537
538 offset |= 0x0020;
539 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset);
540
541 data = mac[0];
542 data |= mac[1] << 8;
543 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
544 data = mac[2];
545 data |= mac[3] << 8;
546 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
547 data = mac[4];
548 data |= mac[5] << 8;
549 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data);
550 }
551
b43legacy_write_mac_bssid_templates(struct b43legacy_wldev * dev)552 static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev)
553 {
554 static const u8 zero_addr[ETH_ALEN] = { 0 };
555 const u8 *mac = dev->wl->mac_addr;
556 const u8 *bssid = dev->wl->bssid;
557 u8 mac_bssid[ETH_ALEN * 2];
558 int i;
559 u32 tmp;
560
561 if (!bssid)
562 bssid = zero_addr;
563 if (!mac)
564 mac = zero_addr;
565
566 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid);
567
568 memcpy(mac_bssid, mac, ETH_ALEN);
569 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
570
571 /* Write our MAC address and BSSID to template ram */
572 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
573 tmp = (u32)(mac_bssid[i + 0]);
574 tmp |= (u32)(mac_bssid[i + 1]) << 8;
575 tmp |= (u32)(mac_bssid[i + 2]) << 16;
576 tmp |= (u32)(mac_bssid[i + 3]) << 24;
577 b43legacy_ram_write(dev, 0x20 + i, tmp);
578 b43legacy_ram_write(dev, 0x78 + i, tmp);
579 b43legacy_ram_write(dev, 0x478 + i, tmp);
580 }
581 }
582
b43legacy_upload_card_macaddress(struct b43legacy_wldev * dev)583 static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev)
584 {
585 b43legacy_write_mac_bssid_templates(dev);
586 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF,
587 dev->wl->mac_addr);
588 }
589
b43legacy_set_slot_time(struct b43legacy_wldev * dev,u16 slot_time)590 static void b43legacy_set_slot_time(struct b43legacy_wldev *dev,
591 u16 slot_time)
592 {
593 /* slot_time is in usec. */
594 if (dev->phy.type != B43legacy_PHYTYPE_G)
595 return;
596 b43legacy_write16(dev, 0x684, 510 + slot_time);
597 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010,
598 slot_time);
599 }
600
b43legacy_short_slot_timing_enable(struct b43legacy_wldev * dev)601 static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev)
602 {
603 b43legacy_set_slot_time(dev, 9);
604 }
605
b43legacy_short_slot_timing_disable(struct b43legacy_wldev * dev)606 static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev)
607 {
608 b43legacy_set_slot_time(dev, 20);
609 }
610
611 /* Synchronize IRQ top- and bottom-half.
612 * IRQs must be masked before calling this.
613 * This must not be called with the irq_lock held.
614 */
b43legacy_synchronize_irq(struct b43legacy_wldev * dev)615 static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev)
616 {
617 synchronize_irq(dev->dev->irq);
618 tasklet_kill(&dev->isr_tasklet);
619 }
620
621 /* DummyTransmission function, as documented on
622 * http://bcm-specs.sipsolutions.net/DummyTransmission
623 */
b43legacy_dummy_transmission(struct b43legacy_wldev * dev)624 void b43legacy_dummy_transmission(struct b43legacy_wldev *dev)
625 {
626 struct b43legacy_phy *phy = &dev->phy;
627 unsigned int i;
628 unsigned int max_loop;
629 u16 value;
630 u32 buffer[5] = {
631 0x00000000,
632 0x00D40000,
633 0x00000000,
634 0x01000000,
635 0x00000000,
636 };
637
638 switch (phy->type) {
639 case B43legacy_PHYTYPE_B:
640 case B43legacy_PHYTYPE_G:
641 max_loop = 0xFA;
642 buffer[0] = 0x000B846E;
643 break;
644 default:
645 B43legacy_BUG_ON(1);
646 return;
647 }
648
649 for (i = 0; i < 5; i++)
650 b43legacy_ram_write(dev, i * 4, buffer[i]);
651
652 /* dummy read follows */
653 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
654
655 b43legacy_write16(dev, 0x0568, 0x0000);
656 b43legacy_write16(dev, 0x07C0, 0x0000);
657 b43legacy_write16(dev, 0x050C, 0x0000);
658 b43legacy_write16(dev, 0x0508, 0x0000);
659 b43legacy_write16(dev, 0x050A, 0x0000);
660 b43legacy_write16(dev, 0x054C, 0x0000);
661 b43legacy_write16(dev, 0x056A, 0x0014);
662 b43legacy_write16(dev, 0x0568, 0x0826);
663 b43legacy_write16(dev, 0x0500, 0x0000);
664 b43legacy_write16(dev, 0x0502, 0x0030);
665
666 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
667 b43legacy_radio_write16(dev, 0x0051, 0x0017);
668 for (i = 0x00; i < max_loop; i++) {
669 value = b43legacy_read16(dev, 0x050E);
670 if (value & 0x0080)
671 break;
672 udelay(10);
673 }
674 for (i = 0x00; i < 0x0A; i++) {
675 value = b43legacy_read16(dev, 0x050E);
676 if (value & 0x0400)
677 break;
678 udelay(10);
679 }
680 for (i = 0x00; i < 0x0A; i++) {
681 value = b43legacy_read16(dev, 0x0690);
682 if (!(value & 0x0100))
683 break;
684 udelay(10);
685 }
686 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
687 b43legacy_radio_write16(dev, 0x0051, 0x0037);
688 }
689
690 /* Turn the Analog ON/OFF */
b43legacy_switch_analog(struct b43legacy_wldev * dev,int on)691 static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on)
692 {
693 b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4);
694 }
695
b43legacy_wireless_core_reset(struct b43legacy_wldev * dev,u32 flags)696 void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags)
697 {
698 u32 tmslow;
699 u32 macctl;
700
701 flags |= B43legacy_TMSLOW_PHYCLKEN;
702 flags |= B43legacy_TMSLOW_PHYRESET;
703 ssb_device_enable(dev->dev, flags);
704 msleep(2); /* Wait for the PLL to turn on. */
705
706 /* Now take the PHY out of Reset again */
707 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
708 tmslow |= SSB_TMSLOW_FGC;
709 tmslow &= ~B43legacy_TMSLOW_PHYRESET;
710 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
711 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
712 msleep(1);
713 tmslow &= ~SSB_TMSLOW_FGC;
714 ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
715 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
716 msleep(1);
717
718 /* Turn Analog ON */
719 b43legacy_switch_analog(dev, 1);
720
721 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
722 macctl &= ~B43legacy_MACCTL_GMODE;
723 if (flags & B43legacy_TMSLOW_GMODE) {
724 macctl |= B43legacy_MACCTL_GMODE;
725 dev->phy.gmode = true;
726 } else
727 dev->phy.gmode = false;
728 macctl |= B43legacy_MACCTL_IHR_ENABLED;
729 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
730 }
731
handle_irq_transmit_status(struct b43legacy_wldev * dev)732 static void handle_irq_transmit_status(struct b43legacy_wldev *dev)
733 {
734 u32 v0;
735 u32 v1;
736 u16 tmp;
737 struct b43legacy_txstatus stat;
738
739 while (1) {
740 v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
741 if (!(v0 & 0x00000001))
742 break;
743 v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
744
745 stat.cookie = (v0 >> 16);
746 stat.seq = (v1 & 0x0000FFFF);
747 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
748 tmp = (v0 & 0x0000FFFF);
749 stat.frame_count = ((tmp & 0xF000) >> 12);
750 stat.rts_count = ((tmp & 0x0F00) >> 8);
751 stat.supp_reason = ((tmp & 0x001C) >> 2);
752 stat.pm_indicated = !!(tmp & 0x0080);
753 stat.intermediate = !!(tmp & 0x0040);
754 stat.for_ampdu = !!(tmp & 0x0020);
755 stat.acked = !!(tmp & 0x0002);
756
757 b43legacy_handle_txstatus(dev, &stat);
758 }
759 }
760
drain_txstatus_queue(struct b43legacy_wldev * dev)761 static void drain_txstatus_queue(struct b43legacy_wldev *dev)
762 {
763 u32 dummy;
764
765 if (dev->dev->id.revision < 5)
766 return;
767 /* Read all entries from the microcode TXstatus FIFO
768 * and throw them away.
769 */
770 while (1) {
771 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0);
772 if (!(dummy & 0x00000001))
773 break;
774 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1);
775 }
776 }
777
b43legacy_jssi_read(struct b43legacy_wldev * dev)778 static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev)
779 {
780 u32 val = 0;
781
782 val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A);
783 val <<= 16;
784 val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408);
785
786 return val;
787 }
788
b43legacy_jssi_write(struct b43legacy_wldev * dev,u32 jssi)789 static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi)
790 {
791 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408,
792 (jssi & 0x0000FFFF));
793 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A,
794 (jssi & 0xFFFF0000) >> 16);
795 }
796
b43legacy_generate_noise_sample(struct b43legacy_wldev * dev)797 static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev)
798 {
799 b43legacy_jssi_write(dev, 0x7F7F7F7F);
800 b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
801 b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
802 | B43legacy_MACCMD_BGNOISE);
803 B43legacy_WARN_ON(dev->noisecalc.channel_at_start !=
804 dev->phy.channel);
805 }
806
b43legacy_calculate_link_quality(struct b43legacy_wldev * dev)807 static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev)
808 {
809 /* Top half of Link Quality calculation. */
810
811 if (dev->noisecalc.calculation_running)
812 return;
813 dev->noisecalc.channel_at_start = dev->phy.channel;
814 dev->noisecalc.calculation_running = true;
815 dev->noisecalc.nr_samples = 0;
816
817 b43legacy_generate_noise_sample(dev);
818 }
819
handle_irq_noise(struct b43legacy_wldev * dev)820 static void handle_irq_noise(struct b43legacy_wldev *dev)
821 {
822 struct b43legacy_phy *phy = &dev->phy;
823 u16 tmp;
824 u8 noise[4];
825 u8 i;
826 u8 j;
827 s32 average;
828
829 /* Bottom half of Link Quality calculation. */
830
831 B43legacy_WARN_ON(!dev->noisecalc.calculation_running);
832 if (dev->noisecalc.channel_at_start != phy->channel)
833 goto drop_calculation;
834 *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev));
835 if (noise[0] == 0x7F || noise[1] == 0x7F ||
836 noise[2] == 0x7F || noise[3] == 0x7F)
837 goto generate_new;
838
839 /* Get the noise samples. */
840 B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8);
841 i = dev->noisecalc.nr_samples;
842 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
843 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
844 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
845 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
846 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
847 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
848 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
849 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
850 dev->noisecalc.nr_samples++;
851 if (dev->noisecalc.nr_samples == 8) {
852 /* Calculate the Link Quality by the noise samples. */
853 average = 0;
854 for (i = 0; i < 8; i++) {
855 for (j = 0; j < 4; j++)
856 average += dev->noisecalc.samples[i][j];
857 }
858 average /= (8 * 4);
859 average *= 125;
860 average += 64;
861 average /= 128;
862 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
863 0x40C);
864 tmp = (tmp / 128) & 0x1F;
865 if (tmp >= 8)
866 average += 2;
867 else
868 average -= 25;
869 if (tmp == 8)
870 average -= 72;
871 else
872 average -= 48;
873
874 dev->stats.link_noise = average;
875 drop_calculation:
876 dev->noisecalc.calculation_running = false;
877 return;
878 }
879 generate_new:
880 b43legacy_generate_noise_sample(dev);
881 }
882
handle_irq_tbtt_indication(struct b43legacy_wldev * dev)883 static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev)
884 {
885 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
886 /* TODO: PS TBTT */
887 } else {
888 if (1/*FIXME: the last PSpoll frame was sent successfully */)
889 b43legacy_power_saving_ctl_bits(dev, -1, -1);
890 }
891 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
892 dev->dfq_valid = true;
893 }
894
handle_irq_atim_end(struct b43legacy_wldev * dev)895 static void handle_irq_atim_end(struct b43legacy_wldev *dev)
896 {
897 if (dev->dfq_valid) {
898 b43legacy_write32(dev, B43legacy_MMIO_MACCMD,
899 b43legacy_read32(dev, B43legacy_MMIO_MACCMD)
900 | B43legacy_MACCMD_DFQ_VALID);
901 dev->dfq_valid = false;
902 }
903 }
904
handle_irq_pmq(struct b43legacy_wldev * dev)905 static void handle_irq_pmq(struct b43legacy_wldev *dev)
906 {
907 u32 tmp;
908
909 /* TODO: AP mode. */
910
911 while (1) {
912 tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS);
913 if (!(tmp & 0x00000008))
914 break;
915 }
916 /* 16bit write is odd, but correct. */
917 b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002);
918 }
919
b43legacy_write_template_common(struct b43legacy_wldev * dev,const u8 * data,u16 size,u16 ram_offset,u16 shm_size_offset,u8 rate)920 static void b43legacy_write_template_common(struct b43legacy_wldev *dev,
921 const u8 *data, u16 size,
922 u16 ram_offset,
923 u16 shm_size_offset, u8 rate)
924 {
925 u32 i;
926 u32 tmp;
927 struct b43legacy_plcp_hdr4 plcp;
928
929 plcp.data = 0;
930 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
931 b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
932 ram_offset += sizeof(u32);
933 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
934 * So leave the first two bytes of the next write blank.
935 */
936 tmp = (u32)(data[0]) << 16;
937 tmp |= (u32)(data[1]) << 24;
938 b43legacy_ram_write(dev, ram_offset, tmp);
939 ram_offset += sizeof(u32);
940 for (i = 2; i < size; i += sizeof(u32)) {
941 tmp = (u32)(data[i + 0]);
942 if (i + 1 < size)
943 tmp |= (u32)(data[i + 1]) << 8;
944 if (i + 2 < size)
945 tmp |= (u32)(data[i + 2]) << 16;
946 if (i + 3 < size)
947 tmp |= (u32)(data[i + 3]) << 24;
948 b43legacy_ram_write(dev, ram_offset + i - 2, tmp);
949 }
950 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset,
951 size + sizeof(struct b43legacy_plcp_hdr6));
952 }
953
954 /* Convert a b43legacy antenna number value to the PHY TX control value. */
b43legacy_antenna_to_phyctl(int antenna)955 static u16 b43legacy_antenna_to_phyctl(int antenna)
956 {
957 switch (antenna) {
958 case B43legacy_ANTENNA0:
959 return B43legacy_TX4_PHY_ANT0;
960 case B43legacy_ANTENNA1:
961 return B43legacy_TX4_PHY_ANT1;
962 }
963 return B43legacy_TX4_PHY_ANTLAST;
964 }
965
b43legacy_write_beacon_template(struct b43legacy_wldev * dev,u16 ram_offset,u16 shm_size_offset)966 static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev,
967 u16 ram_offset,
968 u16 shm_size_offset)
969 {
970
971 unsigned int i, len, variable_len;
972 const struct ieee80211_mgmt *bcn;
973 const u8 *ie;
974 bool tim_found = false;
975 unsigned int rate;
976 u16 ctl;
977 int antenna;
978 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
979
980 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
981 len = min_t(size_t, dev->wl->current_beacon->len,
982 0x200 - sizeof(struct b43legacy_plcp_hdr6));
983 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
984
985 b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset,
986 shm_size_offset, rate);
987
988 /* Write the PHY TX control parameters. */
989 antenna = B43legacy_ANTENNA_DEFAULT;
990 antenna = b43legacy_antenna_to_phyctl(antenna);
991 ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
992 B43legacy_SHM_SH_BEACPHYCTL);
993 /* We can't send beacons with short preamble. Would get PHY errors. */
994 ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL;
995 ctl &= ~B43legacy_TX4_PHY_ANT;
996 ctl &= ~B43legacy_TX4_PHY_ENC;
997 ctl |= antenna;
998 ctl |= B43legacy_TX4_PHY_ENC_CCK;
999 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1000 B43legacy_SHM_SH_BEACPHYCTL, ctl);
1001
1002 /* Find the position of the TIM and the DTIM_period value
1003 * and write them to SHM. */
1004 ie = bcn->u.beacon.variable;
1005 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1006 for (i = 0; i < variable_len - 2; ) {
1007 uint8_t ie_id, ie_len;
1008
1009 ie_id = ie[i];
1010 ie_len = ie[i + 1];
1011 if (ie_id == 5) {
1012 u16 tim_position;
1013 u16 dtim_period;
1014 /* This is the TIM Information Element */
1015
1016 /* Check whether the ie_len is in the beacon data range. */
1017 if (variable_len < ie_len + 2 + i)
1018 break;
1019 /* A valid TIM is at least 4 bytes long. */
1020 if (ie_len < 4)
1021 break;
1022 tim_found = true;
1023
1024 tim_position = sizeof(struct b43legacy_plcp_hdr6);
1025 tim_position += offsetof(struct ieee80211_mgmt,
1026 u.beacon.variable);
1027 tim_position += i;
1028
1029 dtim_period = ie[i + 3];
1030
1031 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1032 B43legacy_SHM_SH_TIMPOS, tim_position);
1033 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
1034 B43legacy_SHM_SH_DTIMP, dtim_period);
1035 break;
1036 }
1037 i += ie_len + 2;
1038 }
1039 if (!tim_found) {
1040 b43legacywarn(dev->wl, "Did not find a valid TIM IE in the "
1041 "beacon template packet. AP or IBSS operation "
1042 "may be broken.\n");
1043 } else
1044 b43legacydbg(dev->wl, "Updated beacon template\n");
1045 }
1046
b43legacy_write_probe_resp_plcp(struct b43legacy_wldev * dev,u16 shm_offset,u16 size,struct ieee80211_rate * rate)1047 static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev,
1048 u16 shm_offset, u16 size,
1049 struct ieee80211_rate *rate)
1050 {
1051 struct b43legacy_plcp_hdr4 plcp;
1052 u32 tmp;
1053 __le16 dur;
1054
1055 plcp.data = 0;
1056 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1057 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1058 dev->wl->vif,
1059 IEEE80211_BAND_2GHZ,
1060 size,
1061 rate);
1062 /* Write PLCP in two parts and timing for packet transfer */
1063 tmp = le32_to_cpu(plcp.data);
1064 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset,
1065 tmp & 0xFFFF);
1066 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2,
1067 tmp >> 16);
1068 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6,
1069 le16_to_cpu(dur));
1070 }
1071
1072 /* Instead of using custom probe response template, this function
1073 * just patches custom beacon template by:
1074 * 1) Changing packet type
1075 * 2) Patching duration field
1076 * 3) Stripping TIM
1077 */
b43legacy_generate_probe_resp(struct b43legacy_wldev * dev,u16 * dest_size,struct ieee80211_rate * rate)1078 static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev,
1079 u16 *dest_size,
1080 struct ieee80211_rate *rate)
1081 {
1082 const u8 *src_data;
1083 u8 *dest_data;
1084 u16 src_size, elem_size, src_pos, dest_pos;
1085 __le16 dur;
1086 struct ieee80211_hdr *hdr;
1087 size_t ie_start;
1088
1089 src_size = dev->wl->current_beacon->len;
1090 src_data = (const u8 *)dev->wl->current_beacon->data;
1091
1092 /* Get the start offset of the variable IEs in the packet. */
1093 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1094 B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt,
1095 u.beacon.variable));
1096
1097 if (B43legacy_WARN_ON(src_size < ie_start))
1098 return NULL;
1099
1100 dest_data = kmalloc(src_size, GFP_ATOMIC);
1101 if (unlikely(!dest_data))
1102 return NULL;
1103
1104 /* Copy the static data and all Information Elements, except the TIM. */
1105 memcpy(dest_data, src_data, ie_start);
1106 src_pos = ie_start;
1107 dest_pos = ie_start;
1108 for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1109 elem_size = src_data[src_pos + 1] + 2;
1110 if (src_data[src_pos] == 5) {
1111 /* This is the TIM. */
1112 continue;
1113 }
1114 memcpy(dest_data + dest_pos, src_data + src_pos, elem_size);
1115 dest_pos += elem_size;
1116 }
1117 *dest_size = dest_pos;
1118 hdr = (struct ieee80211_hdr *)dest_data;
1119
1120 /* Set the frame control. */
1121 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1122 IEEE80211_STYPE_PROBE_RESP);
1123 dur = ieee80211_generic_frame_duration(dev->wl->hw,
1124 dev->wl->vif,
1125 IEEE80211_BAND_2GHZ,
1126 *dest_size,
1127 rate);
1128 hdr->duration_id = dur;
1129
1130 return dest_data;
1131 }
1132
b43legacy_write_probe_resp_template(struct b43legacy_wldev * dev,u16 ram_offset,u16 shm_size_offset,struct ieee80211_rate * rate)1133 static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev,
1134 u16 ram_offset,
1135 u16 shm_size_offset,
1136 struct ieee80211_rate *rate)
1137 {
1138 const u8 *probe_resp_data;
1139 u16 size;
1140
1141 size = dev->wl->current_beacon->len;
1142 probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate);
1143 if (unlikely(!probe_resp_data))
1144 return;
1145
1146 /* Looks like PLCP headers plus packet timings are stored for
1147 * all possible basic rates
1148 */
1149 b43legacy_write_probe_resp_plcp(dev, 0x31A, size,
1150 &b43legacy_b_ratetable[0]);
1151 b43legacy_write_probe_resp_plcp(dev, 0x32C, size,
1152 &b43legacy_b_ratetable[1]);
1153 b43legacy_write_probe_resp_plcp(dev, 0x33E, size,
1154 &b43legacy_b_ratetable[2]);
1155 b43legacy_write_probe_resp_plcp(dev, 0x350, size,
1156 &b43legacy_b_ratetable[3]);
1157
1158 size = min_t(size_t, size,
1159 0x200 - sizeof(struct b43legacy_plcp_hdr6));
1160 b43legacy_write_template_common(dev, probe_resp_data,
1161 size, ram_offset,
1162 shm_size_offset, rate->hw_value);
1163 kfree(probe_resp_data);
1164 }
1165
b43legacy_upload_beacon0(struct b43legacy_wldev * dev)1166 static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev)
1167 {
1168 struct b43legacy_wl *wl = dev->wl;
1169
1170 if (wl->beacon0_uploaded)
1171 return;
1172 b43legacy_write_beacon_template(dev, 0x68, 0x18);
1173 /* FIXME: Probe resp upload doesn't really belong here,
1174 * but we don't use that feature anyway. */
1175 b43legacy_write_probe_resp_template(dev, 0x268, 0x4A,
1176 &__b43legacy_ratetable[3]);
1177 wl->beacon0_uploaded = true;
1178 }
1179
b43legacy_upload_beacon1(struct b43legacy_wldev * dev)1180 static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev)
1181 {
1182 struct b43legacy_wl *wl = dev->wl;
1183
1184 if (wl->beacon1_uploaded)
1185 return;
1186 b43legacy_write_beacon_template(dev, 0x468, 0x1A);
1187 wl->beacon1_uploaded = true;
1188 }
1189
handle_irq_beacon(struct b43legacy_wldev * dev)1190 static void handle_irq_beacon(struct b43legacy_wldev *dev)
1191 {
1192 struct b43legacy_wl *wl = dev->wl;
1193 u32 cmd, beacon0_valid, beacon1_valid;
1194
1195 if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
1196 return;
1197
1198 /* This is the bottom half of the asynchronous beacon update. */
1199
1200 /* Ignore interrupt in the future. */
1201 dev->irq_mask &= ~B43legacy_IRQ_BEACON;
1202
1203 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1204 beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID);
1205 beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID);
1206
1207 /* Schedule interrupt manually, if busy. */
1208 if (beacon0_valid && beacon1_valid) {
1209 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON);
1210 dev->irq_mask |= B43legacy_IRQ_BEACON;
1211 return;
1212 }
1213
1214 if (unlikely(wl->beacon_templates_virgin)) {
1215 /* We never uploaded a beacon before.
1216 * Upload both templates now, but only mark one valid. */
1217 wl->beacon_templates_virgin = false;
1218 b43legacy_upload_beacon0(dev);
1219 b43legacy_upload_beacon1(dev);
1220 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1221 cmd |= B43legacy_MACCMD_BEACON0_VALID;
1222 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1223 } else {
1224 if (!beacon0_valid) {
1225 b43legacy_upload_beacon0(dev);
1226 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1227 cmd |= B43legacy_MACCMD_BEACON0_VALID;
1228 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1229 } else if (!beacon1_valid) {
1230 b43legacy_upload_beacon1(dev);
1231 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD);
1232 cmd |= B43legacy_MACCMD_BEACON1_VALID;
1233 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd);
1234 }
1235 }
1236 }
1237
b43legacy_beacon_update_trigger_work(struct work_struct * work)1238 static void b43legacy_beacon_update_trigger_work(struct work_struct *work)
1239 {
1240 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
1241 beacon_update_trigger);
1242 struct b43legacy_wldev *dev;
1243
1244 mutex_lock(&wl->mutex);
1245 dev = wl->current_dev;
1246 if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) {
1247 spin_lock_irq(&wl->irq_lock);
1248 /* Update beacon right away or defer to IRQ. */
1249 handle_irq_beacon(dev);
1250 /* The handler might have updated the IRQ mask. */
1251 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1252 dev->irq_mask);
1253 mmiowb();
1254 spin_unlock_irq(&wl->irq_lock);
1255 }
1256 mutex_unlock(&wl->mutex);
1257 }
1258
1259 /* Asynchronously update the packet templates in template RAM.
1260 * Locking: Requires wl->irq_lock to be locked. */
b43legacy_update_templates(struct b43legacy_wl * wl)1261 static void b43legacy_update_templates(struct b43legacy_wl *wl)
1262 {
1263 struct sk_buff *beacon;
1264 /* This is the top half of the ansynchronous beacon update. The bottom
1265 * half is the beacon IRQ. Beacon update must be asynchronous to avoid
1266 * sending an invalid beacon. This can happen for example, if the
1267 * firmware transmits a beacon while we are updating it. */
1268
1269 /* We could modify the existing beacon and set the aid bit in the TIM
1270 * field, but that would probably require resizing and moving of data
1271 * within the beacon template. Simply request a new beacon and let
1272 * mac80211 do the hard work. */
1273 beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1274 if (unlikely(!beacon))
1275 return;
1276
1277 if (wl->current_beacon)
1278 dev_kfree_skb_any(wl->current_beacon);
1279 wl->current_beacon = beacon;
1280 wl->beacon0_uploaded = false;
1281 wl->beacon1_uploaded = false;
1282 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1283 }
1284
b43legacy_set_beacon_int(struct b43legacy_wldev * dev,u16 beacon_int)1285 static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev,
1286 u16 beacon_int)
1287 {
1288 b43legacy_time_lock(dev);
1289 if (dev->dev->id.revision >= 3) {
1290 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP,
1291 (beacon_int << 16));
1292 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START,
1293 (beacon_int << 10));
1294 } else {
1295 b43legacy_write16(dev, 0x606, (beacon_int >> 6));
1296 b43legacy_write16(dev, 0x610, beacon_int);
1297 }
1298 b43legacy_time_unlock(dev);
1299 b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1300 }
1301
handle_irq_ucode_debug(struct b43legacy_wldev * dev)1302 static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
1303 {
1304 }
1305
1306 /* Interrupt handler bottom-half */
b43legacy_interrupt_tasklet(struct b43legacy_wldev * dev)1307 static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev)
1308 {
1309 u32 reason;
1310 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1311 u32 merged_dma_reason = 0;
1312 int i;
1313 unsigned long flags;
1314
1315 spin_lock_irqsave(&dev->wl->irq_lock, flags);
1316
1317 B43legacy_WARN_ON(b43legacy_status(dev) <
1318 B43legacy_STAT_INITIALIZED);
1319
1320 reason = dev->irq_reason;
1321 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1322 dma_reason[i] = dev->dma_reason[i];
1323 merged_dma_reason |= dma_reason[i];
1324 }
1325
1326 if (unlikely(reason & B43legacy_IRQ_MAC_TXERR))
1327 b43legacyerr(dev->wl, "MAC transmission error\n");
1328
1329 if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) {
1330 b43legacyerr(dev->wl, "PHY transmission error\n");
1331 rmb();
1332 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1333 b43legacyerr(dev->wl, "Too many PHY TX errors, "
1334 "restarting the controller\n");
1335 b43legacy_controller_restart(dev, "PHY TX errors");
1336 }
1337 }
1338
1339 if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK |
1340 B43legacy_DMAIRQ_NONFATALMASK))) {
1341 if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) {
1342 b43legacyerr(dev->wl, "Fatal DMA error: "
1343 "0x%08X, 0x%08X, 0x%08X, "
1344 "0x%08X, 0x%08X, 0x%08X\n",
1345 dma_reason[0], dma_reason[1],
1346 dma_reason[2], dma_reason[3],
1347 dma_reason[4], dma_reason[5]);
1348 b43legacy_controller_restart(dev, "DMA error");
1349 mmiowb();
1350 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1351 return;
1352 }
1353 if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK)
1354 b43legacyerr(dev->wl, "DMA error: "
1355 "0x%08X, 0x%08X, 0x%08X, "
1356 "0x%08X, 0x%08X, 0x%08X\n",
1357 dma_reason[0], dma_reason[1],
1358 dma_reason[2], dma_reason[3],
1359 dma_reason[4], dma_reason[5]);
1360 }
1361
1362 if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG))
1363 handle_irq_ucode_debug(dev);
1364 if (reason & B43legacy_IRQ_TBTT_INDI)
1365 handle_irq_tbtt_indication(dev);
1366 if (reason & B43legacy_IRQ_ATIM_END)
1367 handle_irq_atim_end(dev);
1368 if (reason & B43legacy_IRQ_BEACON)
1369 handle_irq_beacon(dev);
1370 if (reason & B43legacy_IRQ_PMQ)
1371 handle_irq_pmq(dev);
1372 if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK)
1373 ;/*TODO*/
1374 if (reason & B43legacy_IRQ_NOISESAMPLE_OK)
1375 handle_irq_noise(dev);
1376
1377 /* Check the DMA reason registers for received data. */
1378 if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) {
1379 if (b43legacy_using_pio(dev))
1380 b43legacy_pio_rx(dev->pio.queue0);
1381 else
1382 b43legacy_dma_rx(dev->dma.rx_ring0);
1383 }
1384 B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE);
1385 B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE);
1386 if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) {
1387 if (b43legacy_using_pio(dev))
1388 b43legacy_pio_rx(dev->pio.queue3);
1389 else
1390 b43legacy_dma_rx(dev->dma.rx_ring3);
1391 }
1392 B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE);
1393 B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE);
1394
1395 if (reason & B43legacy_IRQ_TX_OK)
1396 handle_irq_transmit_status(dev);
1397
1398 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1399 mmiowb();
1400 spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1401 }
1402
pio_irq_workaround(struct b43legacy_wldev * dev,u16 base,int queueidx)1403 static void pio_irq_workaround(struct b43legacy_wldev *dev,
1404 u16 base, int queueidx)
1405 {
1406 u16 rxctl;
1407
1408 rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL);
1409 if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE)
1410 dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE;
1411 else
1412 dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE;
1413 }
1414
b43legacy_interrupt_ack(struct b43legacy_wldev * dev,u32 reason)1415 static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason)
1416 {
1417 if (b43legacy_using_pio(dev) &&
1418 (dev->dev->id.revision < 3) &&
1419 (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) {
1420 /* Apply a PIO specific workaround to the dma_reasons */
1421 pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0);
1422 pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1);
1423 pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2);
1424 pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3);
1425 }
1426
1427 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason);
1428
1429 b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON,
1430 dev->dma_reason[0]);
1431 b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON,
1432 dev->dma_reason[1]);
1433 b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON,
1434 dev->dma_reason[2]);
1435 b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON,
1436 dev->dma_reason[3]);
1437 b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON,
1438 dev->dma_reason[4]);
1439 b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON,
1440 dev->dma_reason[5]);
1441 }
1442
1443 /* Interrupt handler top-half */
b43legacy_interrupt_handler(int irq,void * dev_id)1444 static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id)
1445 {
1446 irqreturn_t ret = IRQ_NONE;
1447 struct b43legacy_wldev *dev = dev_id;
1448 u32 reason;
1449
1450 B43legacy_WARN_ON(!dev);
1451
1452 spin_lock(&dev->wl->irq_lock);
1453
1454 if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED))
1455 /* This can only happen on shared IRQ lines. */
1456 goto out;
1457 reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1458 if (reason == 0xffffffff) /* shared IRQ */
1459 goto out;
1460 ret = IRQ_HANDLED;
1461 reason &= dev->irq_mask;
1462 if (!reason)
1463 goto out;
1464
1465 dev->dma_reason[0] = b43legacy_read32(dev,
1466 B43legacy_MMIO_DMA0_REASON)
1467 & 0x0001DC00;
1468 dev->dma_reason[1] = b43legacy_read32(dev,
1469 B43legacy_MMIO_DMA1_REASON)
1470 & 0x0000DC00;
1471 dev->dma_reason[2] = b43legacy_read32(dev,
1472 B43legacy_MMIO_DMA2_REASON)
1473 & 0x0000DC00;
1474 dev->dma_reason[3] = b43legacy_read32(dev,
1475 B43legacy_MMIO_DMA3_REASON)
1476 & 0x0001DC00;
1477 dev->dma_reason[4] = b43legacy_read32(dev,
1478 B43legacy_MMIO_DMA4_REASON)
1479 & 0x0000DC00;
1480 dev->dma_reason[5] = b43legacy_read32(dev,
1481 B43legacy_MMIO_DMA5_REASON)
1482 & 0x0000DC00;
1483
1484 b43legacy_interrupt_ack(dev, reason);
1485 /* Disable all IRQs. They are enabled again in the bottom half. */
1486 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
1487 /* Save the reason code and call our bottom half. */
1488 dev->irq_reason = reason;
1489 tasklet_schedule(&dev->isr_tasklet);
1490 out:
1491 mmiowb();
1492 spin_unlock(&dev->wl->irq_lock);
1493
1494 return ret;
1495 }
1496
b43legacy_release_firmware(struct b43legacy_wldev * dev)1497 static void b43legacy_release_firmware(struct b43legacy_wldev *dev)
1498 {
1499 release_firmware(dev->fw.ucode);
1500 dev->fw.ucode = NULL;
1501 release_firmware(dev->fw.pcm);
1502 dev->fw.pcm = NULL;
1503 release_firmware(dev->fw.initvals);
1504 dev->fw.initvals = NULL;
1505 release_firmware(dev->fw.initvals_band);
1506 dev->fw.initvals_band = NULL;
1507 }
1508
b43legacy_print_fw_helptext(struct b43legacy_wl * wl)1509 static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl)
1510 {
1511 b43legacyerr(wl, "You must go to http://wireless.kernel.org/en/users/"
1512 "Drivers/b43#devicefirmware "
1513 "and download the correct firmware (version 3).\n");
1514 }
1515
b43legacy_fw_cb(const struct firmware * firmware,void * context)1516 static void b43legacy_fw_cb(const struct firmware *firmware, void *context)
1517 {
1518 struct b43legacy_wldev *dev = context;
1519
1520 dev->fwp = firmware;
1521 complete(&dev->fw_load_complete);
1522 }
1523
do_request_fw(struct b43legacy_wldev * dev,const char * name,const struct firmware ** fw,bool async)1524 static int do_request_fw(struct b43legacy_wldev *dev,
1525 const char *name,
1526 const struct firmware **fw, bool async)
1527 {
1528 char path[sizeof(modparam_fwpostfix) + 32];
1529 struct b43legacy_fw_header *hdr;
1530 u32 size;
1531 int err;
1532
1533 if (!name)
1534 return 0;
1535
1536 snprintf(path, ARRAY_SIZE(path),
1537 "b43legacy%s/%s.fw",
1538 modparam_fwpostfix, name);
1539 b43legacyinfo(dev->wl, "Loading firmware %s\n", path);
1540 if (async) {
1541 init_completion(&dev->fw_load_complete);
1542 err = request_firmware_nowait(THIS_MODULE, 1, path,
1543 dev->dev->dev, GFP_KERNEL,
1544 dev, b43legacy_fw_cb);
1545 if (err) {
1546 b43legacyerr(dev->wl, "Unable to load firmware\n");
1547 return err;
1548 }
1549 /* stall here until fw ready */
1550 wait_for_completion(&dev->fw_load_complete);
1551 if (!dev->fwp)
1552 err = -EINVAL;
1553 *fw = dev->fwp;
1554 } else {
1555 err = request_firmware(fw, path, dev->dev->dev);
1556 }
1557 if (err) {
1558 b43legacyerr(dev->wl, "Firmware file \"%s\" not found "
1559 "or load failed.\n", path);
1560 return err;
1561 }
1562 if ((*fw)->size < sizeof(struct b43legacy_fw_header))
1563 goto err_format;
1564 hdr = (struct b43legacy_fw_header *)((*fw)->data);
1565 switch (hdr->type) {
1566 case B43legacy_FW_TYPE_UCODE:
1567 case B43legacy_FW_TYPE_PCM:
1568 size = be32_to_cpu(hdr->size);
1569 if (size != (*fw)->size - sizeof(struct b43legacy_fw_header))
1570 goto err_format;
1571 /* fallthrough */
1572 case B43legacy_FW_TYPE_IV:
1573 if (hdr->ver != 1)
1574 goto err_format;
1575 break;
1576 default:
1577 goto err_format;
1578 }
1579
1580 return err;
1581
1582 err_format:
1583 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
1584 return -EPROTO;
1585 }
1586
1587 static int b43legacy_one_core_attach(struct ssb_device *dev,
1588 struct b43legacy_wl *wl);
1589 static void b43legacy_one_core_detach(struct ssb_device *dev);
1590
b43legacy_request_firmware(struct work_struct * work)1591 static void b43legacy_request_firmware(struct work_struct *work)
1592 {
1593 struct b43legacy_wl *wl = container_of(work,
1594 struct b43legacy_wl, firmware_load);
1595 struct b43legacy_wldev *dev = wl->current_dev;
1596 struct b43legacy_firmware *fw = &dev->fw;
1597 const u8 rev = dev->dev->id.revision;
1598 const char *filename;
1599 int err;
1600
1601 if (!fw->ucode) {
1602 if (rev == 2)
1603 filename = "ucode2";
1604 else if (rev == 4)
1605 filename = "ucode4";
1606 else
1607 filename = "ucode5";
1608 err = do_request_fw(dev, filename, &fw->ucode, true);
1609 if (err)
1610 goto err_load;
1611 }
1612 if (!fw->pcm) {
1613 if (rev < 5)
1614 filename = "pcm4";
1615 else
1616 filename = "pcm5";
1617 err = do_request_fw(dev, filename, &fw->pcm, false);
1618 if (err)
1619 goto err_load;
1620 }
1621 if (!fw->initvals) {
1622 switch (dev->phy.type) {
1623 case B43legacy_PHYTYPE_B:
1624 case B43legacy_PHYTYPE_G:
1625 if ((rev >= 5) && (rev <= 10))
1626 filename = "b0g0initvals5";
1627 else if (rev == 2 || rev == 4)
1628 filename = "b0g0initvals2";
1629 else
1630 goto err_no_initvals;
1631 break;
1632 default:
1633 goto err_no_initvals;
1634 }
1635 err = do_request_fw(dev, filename, &fw->initvals, false);
1636 if (err)
1637 goto err_load;
1638 }
1639 if (!fw->initvals_band) {
1640 switch (dev->phy.type) {
1641 case B43legacy_PHYTYPE_B:
1642 case B43legacy_PHYTYPE_G:
1643 if ((rev >= 5) && (rev <= 10))
1644 filename = "b0g0bsinitvals5";
1645 else if (rev >= 11)
1646 filename = NULL;
1647 else if (rev == 2 || rev == 4)
1648 filename = NULL;
1649 else
1650 goto err_no_initvals;
1651 break;
1652 default:
1653 goto err_no_initvals;
1654 }
1655 err = do_request_fw(dev, filename, &fw->initvals_band, false);
1656 if (err)
1657 goto err_load;
1658 }
1659 err = ieee80211_register_hw(wl->hw);
1660 if (err)
1661 goto err_one_core_detach;
1662 return;
1663
1664 err_one_core_detach:
1665 b43legacy_one_core_detach(dev->dev);
1666 goto error;
1667
1668 err_load:
1669 b43legacy_print_fw_helptext(dev->wl);
1670 goto error;
1671
1672 err_no_initvals:
1673 err = -ENODEV;
1674 b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, "
1675 "core rev %u\n", dev->phy.type, rev);
1676 goto error;
1677
1678 error:
1679 b43legacy_release_firmware(dev);
1680 return;
1681 }
1682
b43legacy_upload_microcode(struct b43legacy_wldev * dev)1683 static int b43legacy_upload_microcode(struct b43legacy_wldev *dev)
1684 {
1685 struct wiphy *wiphy = dev->wl->hw->wiphy;
1686 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1687 const __be32 *data;
1688 unsigned int i;
1689 unsigned int len;
1690 u16 fwrev;
1691 u16 fwpatch;
1692 u16 fwdate;
1693 u16 fwtime;
1694 u32 tmp, macctl;
1695 int err = 0;
1696
1697 /* Jump the microcode PSM to offset 0 */
1698 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1699 B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN);
1700 macctl |= B43legacy_MACCTL_PSM_JMP0;
1701 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1702 /* Zero out all microcode PSM registers and shared memory. */
1703 for (i = 0; i < 64; i++)
1704 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0);
1705 for (i = 0; i < 4096; i += 2)
1706 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0);
1707
1708 /* Upload Microcode. */
1709 data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1710 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1711 b43legacy_shm_control_word(dev,
1712 B43legacy_SHM_UCODE |
1713 B43legacy_SHM_AUTOINC_W,
1714 0x0000);
1715 for (i = 0; i < len; i++) {
1716 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1717 be32_to_cpu(data[i]));
1718 udelay(10);
1719 }
1720
1721 if (dev->fw.pcm) {
1722 /* Upload PCM data. */
1723 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1724 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1725 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA);
1726 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000);
1727 /* No need for autoinc bit in SHM_HW */
1728 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB);
1729 for (i = 0; i < len; i++) {
1730 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1731 be32_to_cpu(data[i]));
1732 udelay(10);
1733 }
1734 }
1735
1736 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1737 B43legacy_IRQ_ALL);
1738
1739 /* Start the microcode PSM */
1740 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1741 macctl &= ~B43legacy_MACCTL_PSM_JMP0;
1742 macctl |= B43legacy_MACCTL_PSM_RUN;
1743 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1744
1745 /* Wait for the microcode to load and respond */
1746 i = 0;
1747 while (1) {
1748 tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1749 if (tmp == B43legacy_IRQ_MAC_SUSPENDED)
1750 break;
1751 i++;
1752 if (i >= B43legacy_IRQWAIT_MAX_RETRIES) {
1753 b43legacyerr(dev->wl, "Microcode not responding\n");
1754 b43legacy_print_fw_helptext(dev->wl);
1755 err = -ENODEV;
1756 goto error;
1757 }
1758 msleep_interruptible(50);
1759 if (signal_pending(current)) {
1760 err = -EINTR;
1761 goto error;
1762 }
1763 }
1764 /* dummy read follows */
1765 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1766
1767 /* Get and check the revisions. */
1768 fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1769 B43legacy_SHM_SH_UCODEREV);
1770 fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1771 B43legacy_SHM_SH_UCODEPATCH);
1772 fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1773 B43legacy_SHM_SH_UCODEDATE);
1774 fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1775 B43legacy_SHM_SH_UCODETIME);
1776
1777 if (fwrev > 0x128) {
1778 b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE."
1779 " Only firmware from binary drivers version 3.x"
1780 " is supported. You must change your firmware"
1781 " files.\n");
1782 b43legacy_print_fw_helptext(dev->wl);
1783 err = -EOPNOTSUPP;
1784 goto error;
1785 }
1786 b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u "
1787 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch,
1788 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1789 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F,
1790 fwtime & 0x1F);
1791
1792 dev->fw.rev = fwrev;
1793 dev->fw.patch = fwpatch;
1794
1795 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
1796 dev->fw.rev, dev->fw.patch);
1797 wiphy->hw_version = dev->dev->id.coreid;
1798
1799 return 0;
1800
1801 error:
1802 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1803 macctl &= ~B43legacy_MACCTL_PSM_RUN;
1804 macctl |= B43legacy_MACCTL_PSM_JMP0;
1805 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1806
1807 return err;
1808 }
1809
b43legacy_write_initvals(struct b43legacy_wldev * dev,const struct b43legacy_iv * ivals,size_t count,size_t array_size)1810 static int b43legacy_write_initvals(struct b43legacy_wldev *dev,
1811 const struct b43legacy_iv *ivals,
1812 size_t count,
1813 size_t array_size)
1814 {
1815 const struct b43legacy_iv *iv;
1816 u16 offset;
1817 size_t i;
1818 bool bit32;
1819
1820 BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6);
1821 iv = ivals;
1822 for (i = 0; i < count; i++) {
1823 if (array_size < sizeof(iv->offset_size))
1824 goto err_format;
1825 array_size -= sizeof(iv->offset_size);
1826 offset = be16_to_cpu(iv->offset_size);
1827 bit32 = !!(offset & B43legacy_IV_32BIT);
1828 offset &= B43legacy_IV_OFFSET_MASK;
1829 if (offset >= 0x1000)
1830 goto err_format;
1831 if (bit32) {
1832 u32 value;
1833
1834 if (array_size < sizeof(iv->data.d32))
1835 goto err_format;
1836 array_size -= sizeof(iv->data.d32);
1837
1838 value = get_unaligned_be32(&iv->data.d32);
1839 b43legacy_write32(dev, offset, value);
1840
1841 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1842 sizeof(__be16) +
1843 sizeof(__be32));
1844 } else {
1845 u16 value;
1846
1847 if (array_size < sizeof(iv->data.d16))
1848 goto err_format;
1849 array_size -= sizeof(iv->data.d16);
1850
1851 value = be16_to_cpu(iv->data.d16);
1852 b43legacy_write16(dev, offset, value);
1853
1854 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1855 sizeof(__be16) +
1856 sizeof(__be16));
1857 }
1858 }
1859 if (array_size)
1860 goto err_format;
1861
1862 return 0;
1863
1864 err_format:
1865 b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n");
1866 b43legacy_print_fw_helptext(dev->wl);
1867
1868 return -EPROTO;
1869 }
1870
b43legacy_upload_initvals(struct b43legacy_wldev * dev)1871 static int b43legacy_upload_initvals(struct b43legacy_wldev *dev)
1872 {
1873 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1874 const struct b43legacy_fw_header *hdr;
1875 struct b43legacy_firmware *fw = &dev->fw;
1876 const struct b43legacy_iv *ivals;
1877 size_t count;
1878 int err;
1879
1880 hdr = (const struct b43legacy_fw_header *)(fw->initvals->data);
1881 ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len);
1882 count = be32_to_cpu(hdr->size);
1883 err = b43legacy_write_initvals(dev, ivals, count,
1884 fw->initvals->size - hdr_len);
1885 if (err)
1886 goto out;
1887 if (fw->initvals_band) {
1888 hdr = (const struct b43legacy_fw_header *)
1889 (fw->initvals_band->data);
1890 ivals = (const struct b43legacy_iv *)(fw->initvals_band->data
1891 + hdr_len);
1892 count = be32_to_cpu(hdr->size);
1893 err = b43legacy_write_initvals(dev, ivals, count,
1894 fw->initvals_band->size - hdr_len);
1895 if (err)
1896 goto out;
1897 }
1898 out:
1899
1900 return err;
1901 }
1902
1903 /* Initialize the GPIOs
1904 * http://bcm-specs.sipsolutions.net/GPIO
1905 */
b43legacy_gpio_init(struct b43legacy_wldev * dev)1906 static int b43legacy_gpio_init(struct b43legacy_wldev *dev)
1907 {
1908 struct ssb_bus *bus = dev->dev->bus;
1909 struct ssb_device *gpiodev, *pcidev = NULL;
1910 u32 mask;
1911 u32 set;
1912
1913 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1914 b43legacy_read32(dev,
1915 B43legacy_MMIO_MACCTL)
1916 & 0xFFFF3FFF);
1917
1918 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1919 b43legacy_read16(dev,
1920 B43legacy_MMIO_GPIO_MASK)
1921 | 0x000F);
1922
1923 mask = 0x0000001F;
1924 set = 0x0000000F;
1925 if (dev->dev->bus->chip_id == 0x4301) {
1926 mask |= 0x0060;
1927 set |= 0x0060;
1928 }
1929 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) {
1930 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1931 b43legacy_read16(dev,
1932 B43legacy_MMIO_GPIO_MASK)
1933 | 0x0200);
1934 mask |= 0x0200;
1935 set |= 0x0200;
1936 }
1937 if (dev->dev->id.revision >= 2)
1938 mask |= 0x0010; /* FIXME: This is redundant. */
1939
1940 #ifdef CONFIG_SSB_DRIVER_PCICORE
1941 pcidev = bus->pcicore.dev;
1942 #endif
1943 gpiodev = bus->chipco.dev ? : pcidev;
1944 if (!gpiodev)
1945 return 0;
1946 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL,
1947 (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL)
1948 & ~mask) | set);
1949
1950 return 0;
1951 }
1952
1953 /* Turn off all GPIO stuff. Call this on module unload, for example. */
b43legacy_gpio_cleanup(struct b43legacy_wldev * dev)1954 static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev)
1955 {
1956 struct ssb_bus *bus = dev->dev->bus;
1957 struct ssb_device *gpiodev, *pcidev = NULL;
1958
1959 #ifdef CONFIG_SSB_DRIVER_PCICORE
1960 pcidev = bus->pcicore.dev;
1961 #endif
1962 gpiodev = bus->chipco.dev ? : pcidev;
1963 if (!gpiodev)
1964 return;
1965 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0);
1966 }
1967
1968 /* http://bcm-specs.sipsolutions.net/EnableMac */
b43legacy_mac_enable(struct b43legacy_wldev * dev)1969 void b43legacy_mac_enable(struct b43legacy_wldev *dev)
1970 {
1971 dev->mac_suspended--;
1972 B43legacy_WARN_ON(dev->mac_suspended < 0);
1973 B43legacy_WARN_ON(irqs_disabled());
1974 if (dev->mac_suspended == 0) {
1975 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1976 b43legacy_read32(dev,
1977 B43legacy_MMIO_MACCTL)
1978 | B43legacy_MACCTL_ENABLED);
1979 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1980 B43legacy_IRQ_MAC_SUSPENDED);
1981 /* the next two are dummy reads */
1982 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1983 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1984 b43legacy_power_saving_ctl_bits(dev, -1, -1);
1985
1986 /* Re-enable IRQs. */
1987 spin_lock_irq(&dev->wl->irq_lock);
1988 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1989 dev->irq_mask);
1990 spin_unlock_irq(&dev->wl->irq_lock);
1991 }
1992 }
1993
1994 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
b43legacy_mac_suspend(struct b43legacy_wldev * dev)1995 void b43legacy_mac_suspend(struct b43legacy_wldev *dev)
1996 {
1997 int i;
1998 u32 tmp;
1999
2000 might_sleep();
2001 B43legacy_WARN_ON(irqs_disabled());
2002 B43legacy_WARN_ON(dev->mac_suspended < 0);
2003
2004 if (dev->mac_suspended == 0) {
2005 /* Mask IRQs before suspending MAC. Otherwise
2006 * the MAC stays busy and won't suspend. */
2007 spin_lock_irq(&dev->wl->irq_lock);
2008 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2009 spin_unlock_irq(&dev->wl->irq_lock);
2010 b43legacy_synchronize_irq(dev);
2011
2012 b43legacy_power_saving_ctl_bits(dev, -1, 1);
2013 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
2014 b43legacy_read32(dev,
2015 B43legacy_MMIO_MACCTL)
2016 & ~B43legacy_MACCTL_ENABLED);
2017 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2018 for (i = 40; i; i--) {
2019 tmp = b43legacy_read32(dev,
2020 B43legacy_MMIO_GEN_IRQ_REASON);
2021 if (tmp & B43legacy_IRQ_MAC_SUSPENDED)
2022 goto out;
2023 msleep(1);
2024 }
2025 b43legacyerr(dev->wl, "MAC suspend failed\n");
2026 }
2027 out:
2028 dev->mac_suspended++;
2029 }
2030
b43legacy_adjust_opmode(struct b43legacy_wldev * dev)2031 static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev)
2032 {
2033 struct b43legacy_wl *wl = dev->wl;
2034 u32 ctl;
2035 u16 cfp_pretbtt;
2036
2037 ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2038 /* Reset status to STA infrastructure mode. */
2039 ctl &= ~B43legacy_MACCTL_AP;
2040 ctl &= ~B43legacy_MACCTL_KEEP_CTL;
2041 ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP;
2042 ctl &= ~B43legacy_MACCTL_KEEP_BAD;
2043 ctl &= ~B43legacy_MACCTL_PROMISC;
2044 ctl &= ~B43legacy_MACCTL_BEACPROMISC;
2045 ctl |= B43legacy_MACCTL_INFRA;
2046
2047 if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
2048 ctl |= B43legacy_MACCTL_AP;
2049 else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))
2050 ctl &= ~B43legacy_MACCTL_INFRA;
2051
2052 if (wl->filter_flags & FIF_CONTROL)
2053 ctl |= B43legacy_MACCTL_KEEP_CTL;
2054 if (wl->filter_flags & FIF_FCSFAIL)
2055 ctl |= B43legacy_MACCTL_KEEP_BAD;
2056 if (wl->filter_flags & FIF_PLCPFAIL)
2057 ctl |= B43legacy_MACCTL_KEEP_BADPLCP;
2058 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2059 ctl |= B43legacy_MACCTL_PROMISC;
2060 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2061 ctl |= B43legacy_MACCTL_BEACPROMISC;
2062
2063 /* Workaround: On old hardware the HW-MAC-address-filter
2064 * doesn't work properly, so always run promisc in filter
2065 * it in software. */
2066 if (dev->dev->id.revision <= 4)
2067 ctl |= B43legacy_MACCTL_PROMISC;
2068
2069 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
2070
2071 cfp_pretbtt = 2;
2072 if ((ctl & B43legacy_MACCTL_INFRA) &&
2073 !(ctl & B43legacy_MACCTL_AP)) {
2074 if (dev->dev->bus->chip_id == 0x4306 &&
2075 dev->dev->bus->chip_rev == 3)
2076 cfp_pretbtt = 100;
2077 else
2078 cfp_pretbtt = 50;
2079 }
2080 b43legacy_write16(dev, 0x612, cfp_pretbtt);
2081 }
2082
b43legacy_rate_memory_write(struct b43legacy_wldev * dev,u16 rate,int is_ofdm)2083 static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
2084 u16 rate,
2085 int is_ofdm)
2086 {
2087 u16 offset;
2088
2089 if (is_ofdm) {
2090 offset = 0x480;
2091 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2092 } else {
2093 offset = 0x4C0;
2094 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2095 }
2096 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
2097 b43legacy_shm_read16(dev,
2098 B43legacy_SHM_SHARED, offset));
2099 }
2100
b43legacy_rate_memory_init(struct b43legacy_wldev * dev)2101 static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
2102 {
2103 switch (dev->phy.type) {
2104 case B43legacy_PHYTYPE_G:
2105 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
2106 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
2107 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
2108 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
2109 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
2110 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
2111 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2112 /* fallthrough */
2113 case B43legacy_PHYTYPE_B:
2114 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
2115 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
2116 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
2117 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
2118 break;
2119 default:
2120 B43legacy_BUG_ON(1);
2121 }
2122 }
2123
2124 /* Set the TX-Antenna for management frames sent by firmware. */
b43legacy_mgmtframe_txantenna(struct b43legacy_wldev * dev,int antenna)2125 static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
2126 int antenna)
2127 {
2128 u16 ant = 0;
2129 u16 tmp;
2130
2131 switch (antenna) {
2132 case B43legacy_ANTENNA0:
2133 ant |= B43legacy_TX4_PHY_ANT0;
2134 break;
2135 case B43legacy_ANTENNA1:
2136 ant |= B43legacy_TX4_PHY_ANT1;
2137 break;
2138 case B43legacy_ANTENNA_AUTO:
2139 ant |= B43legacy_TX4_PHY_ANTLAST;
2140 break;
2141 default:
2142 B43legacy_BUG_ON(1);
2143 }
2144
2145 /* FIXME We also need to set the other flags of the PHY control
2146 * field somewhere. */
2147
2148 /* For Beacons */
2149 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2150 B43legacy_SHM_SH_BEACPHYCTL);
2151 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2152 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2153 B43legacy_SHM_SH_BEACPHYCTL, tmp);
2154 /* For ACK/CTS */
2155 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2156 B43legacy_SHM_SH_ACKCTSPHYCTL);
2157 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2158 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2159 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
2160 /* For Probe Resposes */
2161 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2162 B43legacy_SHM_SH_PRPHYCTL);
2163 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2164 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2165 B43legacy_SHM_SH_PRPHYCTL, tmp);
2166 }
2167
2168 /* This is the opposite of b43legacy_chip_init() */
b43legacy_chip_exit(struct b43legacy_wldev * dev)2169 static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
2170 {
2171 b43legacy_radio_turn_off(dev, 1);
2172 b43legacy_gpio_cleanup(dev);
2173 /* firmware is released later */
2174 }
2175
2176 /* Initialize the chip
2177 * http://bcm-specs.sipsolutions.net/ChipInit
2178 */
b43legacy_chip_init(struct b43legacy_wldev * dev)2179 static int b43legacy_chip_init(struct b43legacy_wldev *dev)
2180 {
2181 struct b43legacy_phy *phy = &dev->phy;
2182 int err;
2183 int tmp;
2184 u32 value32, macctl;
2185 u16 value16;
2186
2187 /* Initialize the MAC control */
2188 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
2189 if (dev->phy.gmode)
2190 macctl |= B43legacy_MACCTL_GMODE;
2191 macctl |= B43legacy_MACCTL_INFRA;
2192 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
2193
2194 err = b43legacy_upload_microcode(dev);
2195 if (err)
2196 goto out; /* firmware is released later */
2197
2198 err = b43legacy_gpio_init(dev);
2199 if (err)
2200 goto out; /* firmware is released later */
2201
2202 err = b43legacy_upload_initvals(dev);
2203 if (err)
2204 goto err_gpio_clean;
2205 b43legacy_radio_turn_on(dev);
2206
2207 b43legacy_write16(dev, 0x03E6, 0x0000);
2208 err = b43legacy_phy_init(dev);
2209 if (err)
2210 goto err_radio_off;
2211
2212 /* Select initial Interference Mitigation. */
2213 tmp = phy->interfmode;
2214 phy->interfmode = B43legacy_INTERFMODE_NONE;
2215 b43legacy_radio_set_interference_mitigation(dev, tmp);
2216
2217 b43legacy_phy_set_antenna_diversity(dev);
2218 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
2219
2220 if (phy->type == B43legacy_PHYTYPE_B) {
2221 value16 = b43legacy_read16(dev, 0x005E);
2222 value16 |= 0x0004;
2223 b43legacy_write16(dev, 0x005E, value16);
2224 }
2225 b43legacy_write32(dev, 0x0100, 0x01000000);
2226 if (dev->dev->id.revision < 5)
2227 b43legacy_write32(dev, 0x010C, 0x01000000);
2228
2229 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2230 value32 &= ~B43legacy_MACCTL_INFRA;
2231 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2232 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2233 value32 |= B43legacy_MACCTL_INFRA;
2234 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2235
2236 if (b43legacy_using_pio(dev)) {
2237 b43legacy_write32(dev, 0x0210, 0x00000100);
2238 b43legacy_write32(dev, 0x0230, 0x00000100);
2239 b43legacy_write32(dev, 0x0250, 0x00000100);
2240 b43legacy_write32(dev, 0x0270, 0x00000100);
2241 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
2242 0x0000);
2243 }
2244
2245 /* Probe Response Timeout value */
2246 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2247 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
2248
2249 /* Initially set the wireless operation mode. */
2250 b43legacy_adjust_opmode(dev);
2251
2252 if (dev->dev->id.revision < 3) {
2253 b43legacy_write16(dev, 0x060E, 0x0000);
2254 b43legacy_write16(dev, 0x0610, 0x8000);
2255 b43legacy_write16(dev, 0x0604, 0x0000);
2256 b43legacy_write16(dev, 0x0606, 0x0200);
2257 } else {
2258 b43legacy_write32(dev, 0x0188, 0x80000000);
2259 b43legacy_write32(dev, 0x018C, 0x02000000);
2260 }
2261 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
2262 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2263 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2264 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2265 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2266 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2267 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2268
2269 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2270 value32 |= B43legacy_TMSLOW_MACPHYCLKEN;
2271 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2272
2273 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
2274 dev->dev->bus->chipco.fast_pwrup_delay);
2275
2276 /* PHY TX errors counter. */
2277 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2278
2279 B43legacy_WARN_ON(err != 0);
2280 b43legacydbg(dev->wl, "Chip initialized\n");
2281 out:
2282 return err;
2283
2284 err_radio_off:
2285 b43legacy_radio_turn_off(dev, 1);
2286 err_gpio_clean:
2287 b43legacy_gpio_cleanup(dev);
2288 goto out;
2289 }
2290
b43legacy_periodic_every120sec(struct b43legacy_wldev * dev)2291 static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
2292 {
2293 struct b43legacy_phy *phy = &dev->phy;
2294
2295 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
2296 return;
2297
2298 b43legacy_mac_suspend(dev);
2299 b43legacy_phy_lo_g_measure(dev);
2300 b43legacy_mac_enable(dev);
2301 }
2302
b43legacy_periodic_every60sec(struct b43legacy_wldev * dev)2303 static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
2304 {
2305 b43legacy_phy_lo_mark_all_unused(dev);
2306 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
2307 b43legacy_mac_suspend(dev);
2308 b43legacy_calc_nrssi_slope(dev);
2309 b43legacy_mac_enable(dev);
2310 }
2311 }
2312
b43legacy_periodic_every30sec(struct b43legacy_wldev * dev)2313 static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
2314 {
2315 /* Update device statistics. */
2316 b43legacy_calculate_link_quality(dev);
2317 }
2318
b43legacy_periodic_every15sec(struct b43legacy_wldev * dev)2319 static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
2320 {
2321 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
2322
2323 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2324 wmb();
2325 }
2326
do_periodic_work(struct b43legacy_wldev * dev)2327 static void do_periodic_work(struct b43legacy_wldev *dev)
2328 {
2329 unsigned int state;
2330
2331 state = dev->periodic_state;
2332 if (state % 8 == 0)
2333 b43legacy_periodic_every120sec(dev);
2334 if (state % 4 == 0)
2335 b43legacy_periodic_every60sec(dev);
2336 if (state % 2 == 0)
2337 b43legacy_periodic_every30sec(dev);
2338 b43legacy_periodic_every15sec(dev);
2339 }
2340
2341 /* Periodic work locking policy:
2342 * The whole periodic work handler is protected by
2343 * wl->mutex. If another lock is needed somewhere in the
2344 * pwork callchain, it's acquired in-place, where it's needed.
2345 */
b43legacy_periodic_work_handler(struct work_struct * work)2346 static void b43legacy_periodic_work_handler(struct work_struct *work)
2347 {
2348 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
2349 periodic_work.work);
2350 struct b43legacy_wl *wl = dev->wl;
2351 unsigned long delay;
2352
2353 mutex_lock(&wl->mutex);
2354
2355 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
2356 goto out;
2357 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
2358 goto out_requeue;
2359
2360 do_periodic_work(dev);
2361
2362 dev->periodic_state++;
2363 out_requeue:
2364 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
2365 delay = msecs_to_jiffies(50);
2366 else
2367 delay = round_jiffies_relative(HZ * 15);
2368 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2369 out:
2370 mutex_unlock(&wl->mutex);
2371 }
2372
b43legacy_periodic_tasks_setup(struct b43legacy_wldev * dev)2373 static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
2374 {
2375 struct delayed_work *work = &dev->periodic_work;
2376
2377 dev->periodic_state = 0;
2378 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
2379 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2380 }
2381
2382 /* Validate access to the chip (SHM) */
b43legacy_validate_chipaccess(struct b43legacy_wldev * dev)2383 static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
2384 {
2385 u32 value;
2386 u32 shm_backup;
2387
2388 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
2389 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
2390 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2391 0xAA5555AA)
2392 goto error;
2393 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
2394 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2395 0x55AAAA55)
2396 goto error;
2397 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
2398
2399 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2400 if ((value | B43legacy_MACCTL_GMODE) !=
2401 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
2402 goto error;
2403
2404 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2405 if (value)
2406 goto error;
2407
2408 return 0;
2409 error:
2410 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
2411 return -ENODEV;
2412 }
2413
b43legacy_security_init(struct b43legacy_wldev * dev)2414 static void b43legacy_security_init(struct b43legacy_wldev *dev)
2415 {
2416 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2417 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2418 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2419 0x0056);
2420 /* KTP is a word address, but we address SHM bytewise.
2421 * So multiply by two.
2422 */
2423 dev->ktp *= 2;
2424 if (dev->dev->id.revision >= 5)
2425 /* Number of RCMTA address slots */
2426 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
2427 dev->max_nr_keys - 8);
2428 }
2429
2430 #ifdef CONFIG_B43LEGACY_HWRNG
b43legacy_rng_read(struct hwrng * rng,u32 * data)2431 static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
2432 {
2433 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
2434 unsigned long flags;
2435
2436 /* Don't take wl->mutex here, as it could deadlock with
2437 * hwrng internal locking. It's not needed to take
2438 * wl->mutex here, anyway. */
2439
2440 spin_lock_irqsave(&wl->irq_lock, flags);
2441 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
2442 spin_unlock_irqrestore(&wl->irq_lock, flags);
2443
2444 return (sizeof(u16));
2445 }
2446 #endif
2447
b43legacy_rng_exit(struct b43legacy_wl * wl)2448 static void b43legacy_rng_exit(struct b43legacy_wl *wl)
2449 {
2450 #ifdef CONFIG_B43LEGACY_HWRNG
2451 if (wl->rng_initialized)
2452 hwrng_unregister(&wl->rng);
2453 #endif
2454 }
2455
b43legacy_rng_init(struct b43legacy_wl * wl)2456 static int b43legacy_rng_init(struct b43legacy_wl *wl)
2457 {
2458 int err = 0;
2459
2460 #ifdef CONFIG_B43LEGACY_HWRNG
2461 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2462 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2463 wl->rng.name = wl->rng_name;
2464 wl->rng.data_read = b43legacy_rng_read;
2465 wl->rng.priv = (unsigned long)wl;
2466 wl->rng_initialized = 1;
2467 err = hwrng_register(&wl->rng);
2468 if (err) {
2469 wl->rng_initialized = 0;
2470 b43legacyerr(wl, "Failed to register the random "
2471 "number generator (%d)\n", err);
2472 }
2473
2474 #endif
2475 return err;
2476 }
2477
b43legacy_tx_work(struct work_struct * work)2478 static void b43legacy_tx_work(struct work_struct *work)
2479 {
2480 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
2481 tx_work);
2482 struct b43legacy_wldev *dev;
2483 struct sk_buff *skb;
2484 int queue_num;
2485 int err = 0;
2486
2487 mutex_lock(&wl->mutex);
2488 dev = wl->current_dev;
2489 if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) {
2490 mutex_unlock(&wl->mutex);
2491 return;
2492 }
2493
2494 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2495 while (skb_queue_len(&wl->tx_queue[queue_num])) {
2496 skb = skb_dequeue(&wl->tx_queue[queue_num]);
2497 if (b43legacy_using_pio(dev))
2498 err = b43legacy_pio_tx(dev, skb);
2499 else
2500 err = b43legacy_dma_tx(dev, skb);
2501 if (err == -ENOSPC) {
2502 wl->tx_queue_stopped[queue_num] = 1;
2503 ieee80211_stop_queue(wl->hw, queue_num);
2504 skb_queue_head(&wl->tx_queue[queue_num], skb);
2505 break;
2506 }
2507 if (unlikely(err))
2508 dev_kfree_skb(skb); /* Drop it */
2509 err = 0;
2510 }
2511
2512 if (!err)
2513 wl->tx_queue_stopped[queue_num] = 0;
2514 }
2515
2516 mutex_unlock(&wl->mutex);
2517 }
2518
b43legacy_op_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)2519 static void b43legacy_op_tx(struct ieee80211_hw *hw,
2520 struct ieee80211_tx_control *control,
2521 struct sk_buff *skb)
2522 {
2523 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2524
2525 if (unlikely(skb->len < 2 + 2 + 6)) {
2526 /* Too short, this can't be a valid frame. */
2527 dev_kfree_skb_any(skb);
2528 return;
2529 }
2530 B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags);
2531
2532 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
2533 if (!wl->tx_queue_stopped[skb->queue_mapping])
2534 ieee80211_queue_work(wl->hw, &wl->tx_work);
2535 else
2536 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
2537 }
2538
b43legacy_op_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)2539 static int b43legacy_op_conf_tx(struct ieee80211_hw *hw,
2540 struct ieee80211_vif *vif, u16 queue,
2541 const struct ieee80211_tx_queue_params *params)
2542 {
2543 return 0;
2544 }
2545
b43legacy_op_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)2546 static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
2547 struct ieee80211_low_level_stats *stats)
2548 {
2549 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2550 unsigned long flags;
2551
2552 spin_lock_irqsave(&wl->irq_lock, flags);
2553 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2554 spin_unlock_irqrestore(&wl->irq_lock, flags);
2555
2556 return 0;
2557 }
2558
phymode_to_string(unsigned int phymode)2559 static const char *phymode_to_string(unsigned int phymode)
2560 {
2561 switch (phymode) {
2562 case B43legacy_PHYMODE_B:
2563 return "B";
2564 case B43legacy_PHYMODE_G:
2565 return "G";
2566 default:
2567 B43legacy_BUG_ON(1);
2568 }
2569 return "";
2570 }
2571
find_wldev_for_phymode(struct b43legacy_wl * wl,unsigned int phymode,struct b43legacy_wldev ** dev,bool * gmode)2572 static int find_wldev_for_phymode(struct b43legacy_wl *wl,
2573 unsigned int phymode,
2574 struct b43legacy_wldev **dev,
2575 bool *gmode)
2576 {
2577 struct b43legacy_wldev *d;
2578
2579 list_for_each_entry(d, &wl->devlist, list) {
2580 if (d->phy.possible_phymodes & phymode) {
2581 /* Ok, this device supports the PHY-mode.
2582 * Set the gmode bit. */
2583 *gmode = true;
2584 *dev = d;
2585
2586 return 0;
2587 }
2588 }
2589
2590 return -ESRCH;
2591 }
2592
b43legacy_put_phy_into_reset(struct b43legacy_wldev * dev)2593 static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
2594 {
2595 struct ssb_device *sdev = dev->dev;
2596 u32 tmslow;
2597
2598 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2599 tmslow &= ~B43legacy_TMSLOW_GMODE;
2600 tmslow |= B43legacy_TMSLOW_PHYRESET;
2601 tmslow |= SSB_TMSLOW_FGC;
2602 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2603 msleep(1);
2604
2605 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2606 tmslow &= ~SSB_TMSLOW_FGC;
2607 tmslow |= B43legacy_TMSLOW_PHYRESET;
2608 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2609 msleep(1);
2610 }
2611
2612 /* Expects wl->mutex locked */
b43legacy_switch_phymode(struct b43legacy_wl * wl,unsigned int new_mode)2613 static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
2614 unsigned int new_mode)
2615 {
2616 struct b43legacy_wldev *uninitialized_var(up_dev);
2617 struct b43legacy_wldev *down_dev;
2618 int err;
2619 bool gmode = false;
2620 int prev_status;
2621
2622 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2623 if (err) {
2624 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
2625 phymode_to_string(new_mode));
2626 return err;
2627 }
2628 if ((up_dev == wl->current_dev) &&
2629 (!!wl->current_dev->phy.gmode == !!gmode))
2630 /* This device is already running. */
2631 return 0;
2632 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2633 phymode_to_string(new_mode));
2634 down_dev = wl->current_dev;
2635
2636 prev_status = b43legacy_status(down_dev);
2637 /* Shutdown the currently running core. */
2638 if (prev_status >= B43legacy_STAT_STARTED)
2639 b43legacy_wireless_core_stop(down_dev);
2640 if (prev_status >= B43legacy_STAT_INITIALIZED)
2641 b43legacy_wireless_core_exit(down_dev);
2642
2643 if (down_dev != up_dev)
2644 /* We switch to a different core, so we put PHY into
2645 * RESET on the old core. */
2646 b43legacy_put_phy_into_reset(down_dev);
2647
2648 /* Now start the new core. */
2649 up_dev->phy.gmode = gmode;
2650 if (prev_status >= B43legacy_STAT_INITIALIZED) {
2651 err = b43legacy_wireless_core_init(up_dev);
2652 if (err) {
2653 b43legacyerr(wl, "Fatal: Could not initialize device"
2654 " for newly selected %s-PHY mode\n",
2655 phymode_to_string(new_mode));
2656 goto init_failure;
2657 }
2658 }
2659 if (prev_status >= B43legacy_STAT_STARTED) {
2660 err = b43legacy_wireless_core_start(up_dev);
2661 if (err) {
2662 b43legacyerr(wl, "Fatal: Could not start device for "
2663 "newly selected %s-PHY mode\n",
2664 phymode_to_string(new_mode));
2665 b43legacy_wireless_core_exit(up_dev);
2666 goto init_failure;
2667 }
2668 }
2669 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
2670
2671 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
2672
2673 wl->current_dev = up_dev;
2674
2675 return 0;
2676 init_failure:
2677 /* Whoops, failed to init the new core. No core is operating now. */
2678 wl->current_dev = NULL;
2679 return err;
2680 }
2681
2682 /* Write the short and long frame retry limit values. */
b43legacy_set_retry_limits(struct b43legacy_wldev * dev,unsigned int short_retry,unsigned int long_retry)2683 static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
2684 unsigned int short_retry,
2685 unsigned int long_retry)
2686 {
2687 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
2688 * the chip-internal counter. */
2689 short_retry = min(short_retry, (unsigned int)0xF);
2690 long_retry = min(long_retry, (unsigned int)0xF);
2691
2692 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
2693 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
2694 }
2695
b43legacy_op_dev_config(struct ieee80211_hw * hw,u32 changed)2696 static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
2697 u32 changed)
2698 {
2699 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2700 struct b43legacy_wldev *dev;
2701 struct b43legacy_phy *phy;
2702 struct ieee80211_conf *conf = &hw->conf;
2703 unsigned long flags;
2704 unsigned int new_phymode = 0xFFFF;
2705 int antenna_tx;
2706 int err = 0;
2707
2708 antenna_tx = B43legacy_ANTENNA_DEFAULT;
2709
2710 mutex_lock(&wl->mutex);
2711 dev = wl->current_dev;
2712 phy = &dev->phy;
2713
2714 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
2715 b43legacy_set_retry_limits(dev,
2716 conf->short_frame_max_tx_count,
2717 conf->long_frame_max_tx_count);
2718 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
2719 if (!changed)
2720 goto out_unlock_mutex;
2721
2722 /* Switch the PHY mode (if necessary). */
2723 switch (conf->chandef.chan->band) {
2724 case IEEE80211_BAND_2GHZ:
2725 if (phy->type == B43legacy_PHYTYPE_B)
2726 new_phymode = B43legacy_PHYMODE_B;
2727 else
2728 new_phymode = B43legacy_PHYMODE_G;
2729 break;
2730 default:
2731 B43legacy_WARN_ON(1);
2732 }
2733 err = b43legacy_switch_phymode(wl, new_phymode);
2734 if (err)
2735 goto out_unlock_mutex;
2736
2737 /* Disable IRQs while reconfiguring the device.
2738 * This makes it possible to drop the spinlock throughout
2739 * the reconfiguration process. */
2740 spin_lock_irqsave(&wl->irq_lock, flags);
2741 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2742 spin_unlock_irqrestore(&wl->irq_lock, flags);
2743 goto out_unlock_mutex;
2744 }
2745 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2746 spin_unlock_irqrestore(&wl->irq_lock, flags);
2747 b43legacy_synchronize_irq(dev);
2748
2749 /* Switch to the requested channel.
2750 * The firmware takes care of races with the TX handler. */
2751 if (conf->chandef.chan->hw_value != phy->channel)
2752 b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value,
2753 0);
2754
2755 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
2756
2757 /* Adjust the desired TX power level. */
2758 if (conf->power_level != 0) {
2759 if (conf->power_level != phy->power_level) {
2760 phy->power_level = conf->power_level;
2761 b43legacy_phy_xmitpower(dev);
2762 }
2763 }
2764
2765 /* Antennas for RX and management frame TX. */
2766 b43legacy_mgmtframe_txantenna(dev, antenna_tx);
2767
2768 if (wl->radio_enabled != phy->radio_on) {
2769 if (wl->radio_enabled) {
2770 b43legacy_radio_turn_on(dev);
2771 b43legacyinfo(dev->wl, "Radio turned on by software\n");
2772 if (!dev->radio_hw_enable)
2773 b43legacyinfo(dev->wl, "The hardware RF-kill"
2774 " button still turns the radio"
2775 " physically off. Press the"
2776 " button to turn it on.\n");
2777 } else {
2778 b43legacy_radio_turn_off(dev, 0);
2779 b43legacyinfo(dev->wl, "Radio turned off by"
2780 " software\n");
2781 }
2782 }
2783
2784 spin_lock_irqsave(&wl->irq_lock, flags);
2785 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2786 mmiowb();
2787 spin_unlock_irqrestore(&wl->irq_lock, flags);
2788 out_unlock_mutex:
2789 mutex_unlock(&wl->mutex);
2790
2791 return err;
2792 }
2793
b43legacy_update_basic_rates(struct b43legacy_wldev * dev,u32 brates)2794 static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
2795 {
2796 struct ieee80211_supported_band *sband =
2797 dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2798 struct ieee80211_rate *rate;
2799 int i;
2800 u16 basic, direct, offset, basic_offset, rateptr;
2801
2802 for (i = 0; i < sband->n_bitrates; i++) {
2803 rate = &sband->bitrates[i];
2804
2805 if (b43legacy_is_cck_rate(rate->hw_value)) {
2806 direct = B43legacy_SHM_SH_CCKDIRECT;
2807 basic = B43legacy_SHM_SH_CCKBASIC;
2808 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2809 offset &= 0xF;
2810 } else {
2811 direct = B43legacy_SHM_SH_OFDMDIRECT;
2812 basic = B43legacy_SHM_SH_OFDMBASIC;
2813 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2814 offset &= 0xF;
2815 }
2816
2817 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
2818
2819 if (b43legacy_is_cck_rate(rate->hw_value)) {
2820 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2821 basic_offset &= 0xF;
2822 } else {
2823 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2824 basic_offset &= 0xF;
2825 }
2826
2827 /*
2828 * Get the pointer that we need to point to
2829 * from the direct map
2830 */
2831 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2832 direct + 2 * basic_offset);
2833 /* and write it to the basic map */
2834 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2835 basic + 2 * offset, rateptr);
2836 }
2837 }
2838
b43legacy_op_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * conf,u32 changed)2839 static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
2840 struct ieee80211_vif *vif,
2841 struct ieee80211_bss_conf *conf,
2842 u32 changed)
2843 {
2844 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2845 struct b43legacy_wldev *dev;
2846 unsigned long flags;
2847
2848 mutex_lock(&wl->mutex);
2849 B43legacy_WARN_ON(wl->vif != vif);
2850
2851 dev = wl->current_dev;
2852
2853 /* Disable IRQs while reconfiguring the device.
2854 * This makes it possible to drop the spinlock throughout
2855 * the reconfiguration process. */
2856 spin_lock_irqsave(&wl->irq_lock, flags);
2857 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2858 spin_unlock_irqrestore(&wl->irq_lock, flags);
2859 goto out_unlock_mutex;
2860 }
2861 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2862
2863 if (changed & BSS_CHANGED_BSSID) {
2864 b43legacy_synchronize_irq(dev);
2865
2866 if (conf->bssid)
2867 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2868 else
2869 eth_zero_addr(wl->bssid);
2870 }
2871
2872 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
2873 if (changed & BSS_CHANGED_BEACON &&
2874 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2875 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2876 b43legacy_update_templates(wl);
2877
2878 if (changed & BSS_CHANGED_BSSID)
2879 b43legacy_write_mac_bssid_templates(dev);
2880 }
2881 spin_unlock_irqrestore(&wl->irq_lock, flags);
2882
2883 b43legacy_mac_suspend(dev);
2884
2885 if (changed & BSS_CHANGED_BEACON_INT &&
2886 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2887 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2888 b43legacy_set_beacon_int(dev, conf->beacon_int);
2889
2890 if (changed & BSS_CHANGED_BASIC_RATES)
2891 b43legacy_update_basic_rates(dev, conf->basic_rates);
2892
2893 if (changed & BSS_CHANGED_ERP_SLOT) {
2894 if (conf->use_short_slot)
2895 b43legacy_short_slot_timing_enable(dev);
2896 else
2897 b43legacy_short_slot_timing_disable(dev);
2898 }
2899
2900 b43legacy_mac_enable(dev);
2901
2902 spin_lock_irqsave(&wl->irq_lock, flags);
2903 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2904 /* XXX: why? */
2905 mmiowb();
2906 spin_unlock_irqrestore(&wl->irq_lock, flags);
2907 out_unlock_mutex:
2908 mutex_unlock(&wl->mutex);
2909 }
2910
b43legacy_op_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * fflags,u64 multicast)2911 static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
2912 unsigned int changed,
2913 unsigned int *fflags,u64 multicast)
2914 {
2915 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2916 struct b43legacy_wldev *dev = wl->current_dev;
2917 unsigned long flags;
2918
2919 if (!dev) {
2920 *fflags = 0;
2921 return;
2922 }
2923
2924 spin_lock_irqsave(&wl->irq_lock, flags);
2925 *fflags &= FIF_PROMISC_IN_BSS |
2926 FIF_ALLMULTI |
2927 FIF_FCSFAIL |
2928 FIF_PLCPFAIL |
2929 FIF_CONTROL |
2930 FIF_OTHER_BSS |
2931 FIF_BCN_PRBRESP_PROMISC;
2932
2933 changed &= FIF_PROMISC_IN_BSS |
2934 FIF_ALLMULTI |
2935 FIF_FCSFAIL |
2936 FIF_PLCPFAIL |
2937 FIF_CONTROL |
2938 FIF_OTHER_BSS |
2939 FIF_BCN_PRBRESP_PROMISC;
2940
2941 wl->filter_flags = *fflags;
2942
2943 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
2944 b43legacy_adjust_opmode(dev);
2945 spin_unlock_irqrestore(&wl->irq_lock, flags);
2946 }
2947
2948 /* Locking: wl->mutex */
b43legacy_wireless_core_stop(struct b43legacy_wldev * dev)2949 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
2950 {
2951 struct b43legacy_wl *wl = dev->wl;
2952 unsigned long flags;
2953 int queue_num;
2954
2955 if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
2956 return;
2957
2958 /* Disable and sync interrupts. We must do this before than
2959 * setting the status to INITIALIZED, as the interrupt handler
2960 * won't care about IRQs then. */
2961 spin_lock_irqsave(&wl->irq_lock, flags);
2962 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2963 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
2964 spin_unlock_irqrestore(&wl->irq_lock, flags);
2965 b43legacy_synchronize_irq(dev);
2966
2967 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
2968
2969 mutex_unlock(&wl->mutex);
2970 /* Must unlock as it would otherwise deadlock. No races here.
2971 * Cancel the possibly running self-rearming periodic work. */
2972 cancel_delayed_work_sync(&dev->periodic_work);
2973 cancel_work_sync(&wl->tx_work);
2974 mutex_lock(&wl->mutex);
2975
2976 /* Drain all TX queues. */
2977 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2978 while (skb_queue_len(&wl->tx_queue[queue_num]))
2979 dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
2980 }
2981
2982 b43legacy_mac_suspend(dev);
2983 free_irq(dev->dev->irq, dev);
2984 b43legacydbg(wl, "Wireless interface stopped\n");
2985 }
2986
2987 /* Locking: wl->mutex */
b43legacy_wireless_core_start(struct b43legacy_wldev * dev)2988 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
2989 {
2990 int err;
2991
2992 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
2993
2994 drain_txstatus_queue(dev);
2995 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
2996 IRQF_SHARED, KBUILD_MODNAME, dev);
2997 if (err) {
2998 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
2999 dev->dev->irq);
3000 goto out;
3001 }
3002 /* We are ready to run. */
3003 ieee80211_wake_queues(dev->wl->hw);
3004 b43legacy_set_status(dev, B43legacy_STAT_STARTED);
3005
3006 /* Start data flow (TX/RX) */
3007 b43legacy_mac_enable(dev);
3008 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3009
3010 /* Start maintenance work */
3011 b43legacy_periodic_tasks_setup(dev);
3012
3013 b43legacydbg(dev->wl, "Wireless interface started\n");
3014 out:
3015 return err;
3016 }
3017
3018 /* Get PHY and RADIO versioning numbers */
b43legacy_phy_versioning(struct b43legacy_wldev * dev)3019 static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
3020 {
3021 struct b43legacy_phy *phy = &dev->phy;
3022 u32 tmp;
3023 u8 analog_type;
3024 u8 phy_type;
3025 u8 phy_rev;
3026 u16 radio_manuf;
3027 u16 radio_ver;
3028 u16 radio_rev;
3029 int unsupported = 0;
3030
3031 /* Get PHY versioning */
3032 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
3033 analog_type = (tmp & B43legacy_PHYVER_ANALOG)
3034 >> B43legacy_PHYVER_ANALOG_SHIFT;
3035 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
3036 phy_rev = (tmp & B43legacy_PHYVER_VERSION);
3037 switch (phy_type) {
3038 case B43legacy_PHYTYPE_B:
3039 if (phy_rev != 2 && phy_rev != 4
3040 && phy_rev != 6 && phy_rev != 7)
3041 unsupported = 1;
3042 break;
3043 case B43legacy_PHYTYPE_G:
3044 if (phy_rev > 8)
3045 unsupported = 1;
3046 break;
3047 default:
3048 unsupported = 1;
3049 }
3050 if (unsupported) {
3051 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
3052 "(Analog %u, Type %u, Revision %u)\n",
3053 analog_type, phy_type, phy_rev);
3054 return -EOPNOTSUPP;
3055 }
3056 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3057 analog_type, phy_type, phy_rev);
3058
3059
3060 /* Get RADIO versioning */
3061 if (dev->dev->bus->chip_id == 0x4317) {
3062 if (dev->dev->bus->chip_rev == 0)
3063 tmp = 0x3205017F;
3064 else if (dev->dev->bus->chip_rev == 1)
3065 tmp = 0x4205017F;
3066 else
3067 tmp = 0x5205017F;
3068 } else {
3069 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3070 B43legacy_RADIOCTL_ID);
3071 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
3072 tmp <<= 16;
3073 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3074 B43legacy_RADIOCTL_ID);
3075 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
3076 }
3077 radio_manuf = (tmp & 0x00000FFF);
3078 radio_ver = (tmp & 0x0FFFF000) >> 12;
3079 radio_rev = (tmp & 0xF0000000) >> 28;
3080 switch (phy_type) {
3081 case B43legacy_PHYTYPE_B:
3082 if ((radio_ver & 0xFFF0) != 0x2050)
3083 unsupported = 1;
3084 break;
3085 case B43legacy_PHYTYPE_G:
3086 if (radio_ver != 0x2050)
3087 unsupported = 1;
3088 break;
3089 default:
3090 B43legacy_BUG_ON(1);
3091 }
3092 if (unsupported) {
3093 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
3094 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3095 radio_manuf, radio_ver, radio_rev);
3096 return -EOPNOTSUPP;
3097 }
3098 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
3099 " Revision %u\n", radio_manuf, radio_ver, radio_rev);
3100
3101
3102 phy->radio_manuf = radio_manuf;
3103 phy->radio_ver = radio_ver;
3104 phy->radio_rev = radio_rev;
3105
3106 phy->analog = analog_type;
3107 phy->type = phy_type;
3108 phy->rev = phy_rev;
3109
3110 return 0;
3111 }
3112
setup_struct_phy_for_init(struct b43legacy_wldev * dev,struct b43legacy_phy * phy)3113 static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
3114 struct b43legacy_phy *phy)
3115 {
3116 struct b43legacy_lopair *lo;
3117 int i;
3118
3119 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3120 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3121
3122 /* Assume the radio is enabled. If it's not enabled, the state will
3123 * immediately get fixed on the first periodic work run. */
3124 dev->radio_hw_enable = true;
3125
3126 phy->savedpctlreg = 0xFFFF;
3127 phy->aci_enable = false;
3128 phy->aci_wlan_automatic = false;
3129 phy->aci_hw_rssi = false;
3130
3131 lo = phy->_lo_pairs;
3132 if (lo)
3133 memset(lo, 0, sizeof(struct b43legacy_lopair) *
3134 B43legacy_LO_COUNT);
3135 phy->max_lb_gain = 0;
3136 phy->trsw_rx_gain = 0;
3137
3138 /* Set default attenuation values. */
3139 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3140 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3141 phy->txctl1 = b43legacy_default_txctl1(dev);
3142 phy->txpwr_offset = 0;
3143
3144 /* NRSSI */
3145 phy->nrssislope = 0;
3146 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3147 phy->nrssi[i] = -1000;
3148 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3149 phy->nrssi_lt[i] = i;
3150
3151 phy->lofcal = 0xFFFF;
3152 phy->initval = 0xFFFF;
3153
3154 phy->interfmode = B43legacy_INTERFMODE_NONE;
3155 phy->channel = 0xFF;
3156 }
3157
setup_struct_wldev_for_init(struct b43legacy_wldev * dev)3158 static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
3159 {
3160 /* Flags */
3161 dev->dfq_valid = false;
3162
3163 /* Stats */
3164 memset(&dev->stats, 0, sizeof(dev->stats));
3165
3166 setup_struct_phy_for_init(dev, &dev->phy);
3167
3168 /* IRQ related flags */
3169 dev->irq_reason = 0;
3170 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3171 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
3172
3173 dev->mac_suspended = 1;
3174
3175 /* Noise calculation context */
3176 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3177 }
3178
b43legacy_set_synth_pu_delay(struct b43legacy_wldev * dev,bool idle)3179 static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
3180 bool idle) {
3181 u16 pu_delay = 1050;
3182
3183 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3184 pu_delay = 500;
3185 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3186 pu_delay = max(pu_delay, (u16)2400);
3187
3188 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3189 B43legacy_SHM_SH_SPUWKUP, pu_delay);
3190 }
3191
3192 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
b43legacy_set_pretbtt(struct b43legacy_wldev * dev)3193 static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
3194 {
3195 u16 pretbtt;
3196
3197 /* The time value is in microseconds. */
3198 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
3199 pretbtt = 2;
3200 else
3201 pretbtt = 250;
3202 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3203 B43legacy_SHM_SH_PRETBTT, pretbtt);
3204 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
3205 }
3206
3207 /* Shutdown a wireless core */
3208 /* Locking: wl->mutex */
b43legacy_wireless_core_exit(struct b43legacy_wldev * dev)3209 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
3210 {
3211 struct b43legacy_phy *phy = &dev->phy;
3212 u32 macctl;
3213
3214 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
3215 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
3216 return;
3217 b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
3218
3219 /* Stop the microcode PSM. */
3220 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
3221 macctl &= ~B43legacy_MACCTL_PSM_RUN;
3222 macctl |= B43legacy_MACCTL_PSM_JMP0;
3223 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
3224
3225 b43legacy_leds_exit(dev);
3226 b43legacy_rng_exit(dev->wl);
3227 b43legacy_pio_free(dev);
3228 b43legacy_dma_free(dev);
3229 b43legacy_chip_exit(dev);
3230 b43legacy_radio_turn_off(dev, 1);
3231 b43legacy_switch_analog(dev, 0);
3232 if (phy->dyn_tssi_tbl)
3233 kfree(phy->tssi2dbm);
3234 kfree(phy->lo_control);
3235 phy->lo_control = NULL;
3236 if (dev->wl->current_beacon) {
3237 dev_kfree_skb_any(dev->wl->current_beacon);
3238 dev->wl->current_beacon = NULL;
3239 }
3240
3241 ssb_device_disable(dev->dev, 0);
3242 ssb_bus_may_powerdown(dev->dev->bus);
3243 }
3244
prepare_phy_data_for_init(struct b43legacy_wldev * dev)3245 static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
3246 {
3247 struct b43legacy_phy *phy = &dev->phy;
3248 int i;
3249
3250 /* Set default attenuation values. */
3251 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3252 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3253 phy->txctl1 = b43legacy_default_txctl1(dev);
3254 phy->txctl2 = 0xFFFF;
3255 phy->txpwr_offset = 0;
3256
3257 /* NRSSI */
3258 phy->nrssislope = 0;
3259 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3260 phy->nrssi[i] = -1000;
3261 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3262 phy->nrssi_lt[i] = i;
3263
3264 phy->lofcal = 0xFFFF;
3265 phy->initval = 0xFFFF;
3266
3267 phy->aci_enable = false;
3268 phy->aci_wlan_automatic = false;
3269 phy->aci_hw_rssi = false;
3270
3271 phy->antenna_diversity = 0xFFFF;
3272 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3273 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3274
3275 /* Flags */
3276 phy->calibrated = 0;
3277
3278 if (phy->_lo_pairs)
3279 memset(phy->_lo_pairs, 0,
3280 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
3281 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
3282 }
3283
3284 /* Initialize a wireless core */
b43legacy_wireless_core_init(struct b43legacy_wldev * dev)3285 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
3286 {
3287 struct b43legacy_wl *wl = dev->wl;
3288 struct ssb_bus *bus = dev->dev->bus;
3289 struct b43legacy_phy *phy = &dev->phy;
3290 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3291 int err;
3292 u32 hf;
3293 u32 tmp;
3294
3295 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3296
3297 err = ssb_bus_powerup(bus, 0);
3298 if (err)
3299 goto out;
3300 if (!ssb_device_is_enabled(dev->dev)) {
3301 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
3302 b43legacy_wireless_core_reset(dev, tmp);
3303 }
3304
3305 if ((phy->type == B43legacy_PHYTYPE_B) ||
3306 (phy->type == B43legacy_PHYTYPE_G)) {
3307 phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair)
3308 * B43legacy_LO_COUNT,
3309 GFP_KERNEL);
3310 if (!phy->_lo_pairs)
3311 return -ENOMEM;
3312 }
3313 setup_struct_wldev_for_init(dev);
3314
3315 err = b43legacy_phy_init_tssi2dbm_table(dev);
3316 if (err)
3317 goto err_kfree_lo_control;
3318
3319 /* Enable IRQ routing to this device. */
3320 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3321
3322 prepare_phy_data_for_init(dev);
3323 b43legacy_phy_calibrate(dev);
3324 err = b43legacy_chip_init(dev);
3325 if (err)
3326 goto err_kfree_tssitbl;
3327 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3328 B43legacy_SHM_SH_WLCOREREV,
3329 dev->dev->id.revision);
3330 hf = b43legacy_hf_read(dev);
3331 if (phy->type == B43legacy_PHYTYPE_G) {
3332 hf |= B43legacy_HF_SYMW;
3333 if (phy->rev == 1)
3334 hf |= B43legacy_HF_GDCW;
3335 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
3336 hf |= B43legacy_HF_OFDMPABOOST;
3337 } else if (phy->type == B43legacy_PHYTYPE_B) {
3338 hf |= B43legacy_HF_SYMW;
3339 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3340 hf &= ~B43legacy_HF_GDCW;
3341 }
3342 b43legacy_hf_write(dev, hf);
3343
3344 b43legacy_set_retry_limits(dev,
3345 B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
3346 B43legacy_DEFAULT_LONG_RETRY_LIMIT);
3347
3348 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3349 0x0044, 3);
3350 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3351 0x0046, 2);
3352
3353 /* Disable sending probe responses from firmware.
3354 * Setting the MaxTime to one usec will always trigger
3355 * a timeout, so we never send any probe resp.
3356 * A timeout of zero is infinite. */
3357 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3358 B43legacy_SHM_SH_PRMAXTIME, 1);
3359
3360 b43legacy_rate_memory_init(dev);
3361
3362 /* Minimum Contention Window */
3363 if (phy->type == B43legacy_PHYTYPE_B)
3364 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3365 0x0003, 31);
3366 else
3367 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3368 0x0003, 15);
3369 /* Maximum Contention Window */
3370 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3371 0x0004, 1023);
3372
3373 do {
3374 if (b43legacy_using_pio(dev))
3375 err = b43legacy_pio_init(dev);
3376 else {
3377 err = b43legacy_dma_init(dev);
3378 if (!err)
3379 b43legacy_qos_init(dev);
3380 }
3381 } while (err == -EAGAIN);
3382 if (err)
3383 goto err_chip_exit;
3384
3385 b43legacy_set_synth_pu_delay(dev, 1);
3386
3387 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3388 b43legacy_upload_card_macaddress(dev);
3389 b43legacy_security_init(dev);
3390 b43legacy_rng_init(wl);
3391
3392 ieee80211_wake_queues(dev->wl->hw);
3393 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
3394
3395 b43legacy_leds_init(dev);
3396 out:
3397 return err;
3398
3399 err_chip_exit:
3400 b43legacy_chip_exit(dev);
3401 err_kfree_tssitbl:
3402 if (phy->dyn_tssi_tbl)
3403 kfree(phy->tssi2dbm);
3404 err_kfree_lo_control:
3405 kfree(phy->lo_control);
3406 phy->lo_control = NULL;
3407 ssb_bus_may_powerdown(bus);
3408 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3409 return err;
3410 }
3411
b43legacy_op_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3412 static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
3413 struct ieee80211_vif *vif)
3414 {
3415 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3416 struct b43legacy_wldev *dev;
3417 unsigned long flags;
3418 int err = -EOPNOTSUPP;
3419
3420 /* TODO: allow WDS/AP devices to coexist */
3421
3422 if (vif->type != NL80211_IFTYPE_AP &&
3423 vif->type != NL80211_IFTYPE_STATION &&
3424 vif->type != NL80211_IFTYPE_WDS &&
3425 vif->type != NL80211_IFTYPE_ADHOC)
3426 return -EOPNOTSUPP;
3427
3428 mutex_lock(&wl->mutex);
3429 if (wl->operating)
3430 goto out_mutex_unlock;
3431
3432 b43legacydbg(wl, "Adding Interface type %d\n", vif->type);
3433
3434 dev = wl->current_dev;
3435 wl->operating = true;
3436 wl->vif = vif;
3437 wl->if_type = vif->type;
3438 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
3439
3440 spin_lock_irqsave(&wl->irq_lock, flags);
3441 b43legacy_adjust_opmode(dev);
3442 b43legacy_set_pretbtt(dev);
3443 b43legacy_set_synth_pu_delay(dev, 0);
3444 b43legacy_upload_card_macaddress(dev);
3445 spin_unlock_irqrestore(&wl->irq_lock, flags);
3446
3447 err = 0;
3448 out_mutex_unlock:
3449 mutex_unlock(&wl->mutex);
3450
3451 return err;
3452 }
3453
b43legacy_op_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3454 static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
3455 struct ieee80211_vif *vif)
3456 {
3457 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3458 struct b43legacy_wldev *dev = wl->current_dev;
3459 unsigned long flags;
3460
3461 b43legacydbg(wl, "Removing Interface type %d\n", vif->type);
3462
3463 mutex_lock(&wl->mutex);
3464
3465 B43legacy_WARN_ON(!wl->operating);
3466 B43legacy_WARN_ON(wl->vif != vif);
3467 wl->vif = NULL;
3468
3469 wl->operating = false;
3470
3471 spin_lock_irqsave(&wl->irq_lock, flags);
3472 b43legacy_adjust_opmode(dev);
3473 eth_zero_addr(wl->mac_addr);
3474 b43legacy_upload_card_macaddress(dev);
3475 spin_unlock_irqrestore(&wl->irq_lock, flags);
3476
3477 mutex_unlock(&wl->mutex);
3478 }
3479
b43legacy_op_start(struct ieee80211_hw * hw)3480 static int b43legacy_op_start(struct ieee80211_hw *hw)
3481 {
3482 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3483 struct b43legacy_wldev *dev = wl->current_dev;
3484 int did_init = 0;
3485 int err = 0;
3486
3487 /* Kill all old instance specific information to make sure
3488 * the card won't use it in the short timeframe between start
3489 * and mac80211 reconfiguring it. */
3490 eth_zero_addr(wl->bssid);
3491 eth_zero_addr(wl->mac_addr);
3492 wl->filter_flags = 0;
3493 wl->beacon0_uploaded = false;
3494 wl->beacon1_uploaded = false;
3495 wl->beacon_templates_virgin = true;
3496 wl->radio_enabled = true;
3497
3498 mutex_lock(&wl->mutex);
3499
3500 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
3501 err = b43legacy_wireless_core_init(dev);
3502 if (err)
3503 goto out_mutex_unlock;
3504 did_init = 1;
3505 }
3506
3507 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
3508 err = b43legacy_wireless_core_start(dev);
3509 if (err) {
3510 if (did_init)
3511 b43legacy_wireless_core_exit(dev);
3512 goto out_mutex_unlock;
3513 }
3514 }
3515
3516 wiphy_rfkill_start_polling(hw->wiphy);
3517
3518 out_mutex_unlock:
3519 mutex_unlock(&wl->mutex);
3520
3521 return err;
3522 }
3523
b43legacy_op_stop(struct ieee80211_hw * hw)3524 static void b43legacy_op_stop(struct ieee80211_hw *hw)
3525 {
3526 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3527 struct b43legacy_wldev *dev = wl->current_dev;
3528
3529 cancel_work_sync(&(wl->beacon_update_trigger));
3530
3531 mutex_lock(&wl->mutex);
3532 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
3533 b43legacy_wireless_core_stop(dev);
3534 b43legacy_wireless_core_exit(dev);
3535 wl->radio_enabled = false;
3536 mutex_unlock(&wl->mutex);
3537 }
3538
b43legacy_op_beacon_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)3539 static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
3540 struct ieee80211_sta *sta, bool set)
3541 {
3542 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3543 unsigned long flags;
3544
3545 spin_lock_irqsave(&wl->irq_lock, flags);
3546 b43legacy_update_templates(wl);
3547 spin_unlock_irqrestore(&wl->irq_lock, flags);
3548
3549 return 0;
3550 }
3551
b43legacy_op_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)3552 static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
3553 struct survey_info *survey)
3554 {
3555 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3556 struct b43legacy_wldev *dev = wl->current_dev;
3557 struct ieee80211_conf *conf = &hw->conf;
3558
3559 if (idx != 0)
3560 return -ENOENT;
3561
3562 survey->channel = conf->chandef.chan;
3563 survey->filled = SURVEY_INFO_NOISE_DBM;
3564 survey->noise = dev->stats.link_noise;
3565
3566 return 0;
3567 }
3568
3569 static const struct ieee80211_ops b43legacy_hw_ops = {
3570 .tx = b43legacy_op_tx,
3571 .conf_tx = b43legacy_op_conf_tx,
3572 .add_interface = b43legacy_op_add_interface,
3573 .remove_interface = b43legacy_op_remove_interface,
3574 .config = b43legacy_op_dev_config,
3575 .bss_info_changed = b43legacy_op_bss_info_changed,
3576 .configure_filter = b43legacy_op_configure_filter,
3577 .get_stats = b43legacy_op_get_stats,
3578 .start = b43legacy_op_start,
3579 .stop = b43legacy_op_stop,
3580 .set_tim = b43legacy_op_beacon_set_tim,
3581 .get_survey = b43legacy_op_get_survey,
3582 .rfkill_poll = b43legacy_rfkill_poll,
3583 };
3584
3585 /* Hard-reset the chip. Do not call this directly.
3586 * Use b43legacy_controller_restart()
3587 */
b43legacy_chip_reset(struct work_struct * work)3588 static void b43legacy_chip_reset(struct work_struct *work)
3589 {
3590 struct b43legacy_wldev *dev =
3591 container_of(work, struct b43legacy_wldev, restart_work);
3592 struct b43legacy_wl *wl = dev->wl;
3593 int err = 0;
3594 int prev_status;
3595
3596 mutex_lock(&wl->mutex);
3597
3598 prev_status = b43legacy_status(dev);
3599 /* Bring the device down... */
3600 if (prev_status >= B43legacy_STAT_STARTED)
3601 b43legacy_wireless_core_stop(dev);
3602 if (prev_status >= B43legacy_STAT_INITIALIZED)
3603 b43legacy_wireless_core_exit(dev);
3604
3605 /* ...and up again. */
3606 if (prev_status >= B43legacy_STAT_INITIALIZED) {
3607 err = b43legacy_wireless_core_init(dev);
3608 if (err)
3609 goto out;
3610 }
3611 if (prev_status >= B43legacy_STAT_STARTED) {
3612 err = b43legacy_wireless_core_start(dev);
3613 if (err) {
3614 b43legacy_wireless_core_exit(dev);
3615 goto out;
3616 }
3617 }
3618 out:
3619 if (err)
3620 wl->current_dev = NULL; /* Failed to init the dev. */
3621 mutex_unlock(&wl->mutex);
3622 if (err)
3623 b43legacyerr(wl, "Controller restart FAILED\n");
3624 else
3625 b43legacyinfo(wl, "Controller restarted\n");
3626 }
3627
b43legacy_setup_modes(struct b43legacy_wldev * dev,int have_bphy,int have_gphy)3628 static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
3629 int have_bphy,
3630 int have_gphy)
3631 {
3632 struct ieee80211_hw *hw = dev->wl->hw;
3633 struct b43legacy_phy *phy = &dev->phy;
3634
3635 phy->possible_phymodes = 0;
3636 if (have_bphy) {
3637 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3638 &b43legacy_band_2GHz_BPHY;
3639 phy->possible_phymodes |= B43legacy_PHYMODE_B;
3640 }
3641
3642 if (have_gphy) {
3643 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3644 &b43legacy_band_2GHz_GPHY;
3645 phy->possible_phymodes |= B43legacy_PHYMODE_G;
3646 }
3647
3648 return 0;
3649 }
3650
b43legacy_wireless_core_detach(struct b43legacy_wldev * dev)3651 static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
3652 {
3653 /* We release firmware that late to not be required to re-request
3654 * is all the time when we reinit the core. */
3655 b43legacy_release_firmware(dev);
3656 }
3657
b43legacy_wireless_core_attach(struct b43legacy_wldev * dev)3658 static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
3659 {
3660 struct b43legacy_wl *wl = dev->wl;
3661 struct ssb_bus *bus = dev->dev->bus;
3662 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
3663 int err;
3664 int have_bphy = 0;
3665 int have_gphy = 0;
3666 u32 tmp;
3667
3668 /* Do NOT do any device initialization here.
3669 * Do it in wireless_core_init() instead.
3670 * This function is for gathering basic information about the HW, only.
3671 * Also some structs may be set up here. But most likely you want to
3672 * have that in core_init(), too.
3673 */
3674
3675 err = ssb_bus_powerup(bus, 0);
3676 if (err) {
3677 b43legacyerr(wl, "Bus powerup failed\n");
3678 goto out;
3679 }
3680 /* Get the PHY type. */
3681 if (dev->dev->id.revision >= 5) {
3682 u32 tmshigh;
3683
3684 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3685 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
3686 if (!have_gphy)
3687 have_bphy = 1;
3688 } else if (dev->dev->id.revision == 4)
3689 have_gphy = 1;
3690 else
3691 have_bphy = 1;
3692
3693 dev->phy.gmode = (have_gphy || have_bphy);
3694 dev->phy.radio_on = true;
3695 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3696 b43legacy_wireless_core_reset(dev, tmp);
3697
3698 err = b43legacy_phy_versioning(dev);
3699 if (err)
3700 goto err_powerdown;
3701 /* Check if this device supports multiband. */
3702 if (!pdev ||
3703 (pdev->device != 0x4312 &&
3704 pdev->device != 0x4319 &&
3705 pdev->device != 0x4324)) {
3706 /* No multiband support. */
3707 have_bphy = 0;
3708 have_gphy = 0;
3709 switch (dev->phy.type) {
3710 case B43legacy_PHYTYPE_B:
3711 have_bphy = 1;
3712 break;
3713 case B43legacy_PHYTYPE_G:
3714 have_gphy = 1;
3715 break;
3716 default:
3717 B43legacy_BUG_ON(1);
3718 }
3719 }
3720 dev->phy.gmode = (have_gphy || have_bphy);
3721 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3722 b43legacy_wireless_core_reset(dev, tmp);
3723
3724 err = b43legacy_validate_chipaccess(dev);
3725 if (err)
3726 goto err_powerdown;
3727 err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
3728 if (err)
3729 goto err_powerdown;
3730
3731 /* Now set some default "current_dev" */
3732 if (!wl->current_dev)
3733 wl->current_dev = dev;
3734 INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
3735
3736 b43legacy_radio_turn_off(dev, 1);
3737 b43legacy_switch_analog(dev, 0);
3738 ssb_device_disable(dev->dev, 0);
3739 ssb_bus_may_powerdown(bus);
3740
3741 out:
3742 return err;
3743
3744 err_powerdown:
3745 ssb_bus_may_powerdown(bus);
3746 return err;
3747 }
3748
b43legacy_one_core_detach(struct ssb_device * dev)3749 static void b43legacy_one_core_detach(struct ssb_device *dev)
3750 {
3751 struct b43legacy_wldev *wldev;
3752 struct b43legacy_wl *wl;
3753
3754 /* Do not cancel ieee80211-workqueue based work here.
3755 * See comment in b43legacy_remove(). */
3756
3757 wldev = ssb_get_drvdata(dev);
3758 wl = wldev->wl;
3759 b43legacy_debugfs_remove_device(wldev);
3760 b43legacy_wireless_core_detach(wldev);
3761 list_del(&wldev->list);
3762 wl->nr_devs--;
3763 ssb_set_drvdata(dev, NULL);
3764 kfree(wldev);
3765 }
3766
b43legacy_one_core_attach(struct ssb_device * dev,struct b43legacy_wl * wl)3767 static int b43legacy_one_core_attach(struct ssb_device *dev,
3768 struct b43legacy_wl *wl)
3769 {
3770 struct b43legacy_wldev *wldev;
3771 int err = -ENOMEM;
3772
3773 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3774 if (!wldev)
3775 goto out;
3776
3777 wldev->dev = dev;
3778 wldev->wl = wl;
3779 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
3780 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3781 tasklet_init(&wldev->isr_tasklet,
3782 (void (*)(unsigned long))b43legacy_interrupt_tasklet,
3783 (unsigned long)wldev);
3784 if (modparam_pio)
3785 wldev->__using_pio = true;
3786 INIT_LIST_HEAD(&wldev->list);
3787
3788 err = b43legacy_wireless_core_attach(wldev);
3789 if (err)
3790 goto err_kfree_wldev;
3791
3792 list_add(&wldev->list, &wl->devlist);
3793 wl->nr_devs++;
3794 ssb_set_drvdata(dev, wldev);
3795 b43legacy_debugfs_add_device(wldev);
3796 out:
3797 return err;
3798
3799 err_kfree_wldev:
3800 kfree(wldev);
3801 return err;
3802 }
3803
b43legacy_sprom_fixup(struct ssb_bus * bus)3804 static void b43legacy_sprom_fixup(struct ssb_bus *bus)
3805 {
3806 /* boardflags workarounds */
3807 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3808 bus->boardinfo.type == 0x4E &&
3809 bus->sprom.board_rev > 0x40)
3810 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
3811 }
3812
b43legacy_wireless_exit(struct ssb_device * dev,struct b43legacy_wl * wl)3813 static void b43legacy_wireless_exit(struct ssb_device *dev,
3814 struct b43legacy_wl *wl)
3815 {
3816 struct ieee80211_hw *hw = wl->hw;
3817
3818 ssb_set_devtypedata(dev, NULL);
3819 ieee80211_free_hw(hw);
3820 }
3821
b43legacy_wireless_init(struct ssb_device * dev)3822 static int b43legacy_wireless_init(struct ssb_device *dev)
3823 {
3824 struct ssb_sprom *sprom = &dev->bus->sprom;
3825 struct ieee80211_hw *hw;
3826 struct b43legacy_wl *wl;
3827 int err = -ENOMEM;
3828 int queue_num;
3829
3830 b43legacy_sprom_fixup(dev->bus);
3831
3832 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
3833 if (!hw) {
3834 b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
3835 goto out;
3836 }
3837
3838 /* fill hw info */
3839 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
3840 IEEE80211_HW_SIGNAL_DBM;
3841 hw->wiphy->interface_modes =
3842 BIT(NL80211_IFTYPE_AP) |
3843 BIT(NL80211_IFTYPE_STATION) |
3844 BIT(NL80211_IFTYPE_WDS) |
3845 BIT(NL80211_IFTYPE_ADHOC);
3846 hw->queues = 1; /* FIXME: hardware has more queues */
3847 hw->max_rates = 2;
3848 SET_IEEE80211_DEV(hw, dev->dev);
3849 if (is_valid_ether_addr(sprom->et1mac))
3850 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3851 else
3852 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3853
3854 /* Get and initialize struct b43legacy_wl */
3855 wl = hw_to_b43legacy_wl(hw);
3856 memset(wl, 0, sizeof(*wl));
3857 wl->hw = hw;
3858 spin_lock_init(&wl->irq_lock);
3859 spin_lock_init(&wl->leds_lock);
3860 mutex_init(&wl->mutex);
3861 INIT_LIST_HEAD(&wl->devlist);
3862 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
3863 INIT_WORK(&wl->tx_work, b43legacy_tx_work);
3864
3865 /* Initialize queues and flags. */
3866 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
3867 skb_queue_head_init(&wl->tx_queue[queue_num]);
3868 wl->tx_queue_stopped[queue_num] = 0;
3869 }
3870
3871 ssb_set_devtypedata(dev, wl);
3872 b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n",
3873 dev->bus->chip_id, dev->id.revision);
3874 err = 0;
3875 out:
3876 return err;
3877 }
3878
b43legacy_probe(struct ssb_device * dev,const struct ssb_device_id * id)3879 static int b43legacy_probe(struct ssb_device *dev,
3880 const struct ssb_device_id *id)
3881 {
3882 struct b43legacy_wl *wl;
3883 int err;
3884 int first = 0;
3885
3886 wl = ssb_get_devtypedata(dev);
3887 if (!wl) {
3888 /* Probing the first core - setup common struct b43legacy_wl */
3889 first = 1;
3890 err = b43legacy_wireless_init(dev);
3891 if (err)
3892 goto out;
3893 wl = ssb_get_devtypedata(dev);
3894 B43legacy_WARN_ON(!wl);
3895 }
3896 err = b43legacy_one_core_attach(dev, wl);
3897 if (err)
3898 goto err_wireless_exit;
3899
3900 /* setup and start work to load firmware */
3901 INIT_WORK(&wl->firmware_load, b43legacy_request_firmware);
3902 schedule_work(&wl->firmware_load);
3903
3904 out:
3905 return err;
3906
3907 err_wireless_exit:
3908 if (first)
3909 b43legacy_wireless_exit(dev, wl);
3910 return err;
3911 }
3912
b43legacy_remove(struct ssb_device * dev)3913 static void b43legacy_remove(struct ssb_device *dev)
3914 {
3915 struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
3916 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3917
3918 /* We must cancel any work here before unregistering from ieee80211,
3919 * as the ieee80211 unreg will destroy the workqueue. */
3920 cancel_work_sync(&wldev->restart_work);
3921 cancel_work_sync(&wl->firmware_load);
3922 complete(&wldev->fw_load_complete);
3923
3924 B43legacy_WARN_ON(!wl);
3925 if (!wldev->fw.ucode)
3926 return; /* NULL if fw never loaded */
3927 if (wl->current_dev == wldev)
3928 ieee80211_unregister_hw(wl->hw);
3929
3930 b43legacy_one_core_detach(dev);
3931
3932 if (list_empty(&wl->devlist))
3933 /* Last core on the chip unregistered.
3934 * We can destroy common struct b43legacy_wl.
3935 */
3936 b43legacy_wireless_exit(dev, wl);
3937 }
3938
3939 /* Perform a hardware reset. This can be called from any context. */
b43legacy_controller_restart(struct b43legacy_wldev * dev,const char * reason)3940 void b43legacy_controller_restart(struct b43legacy_wldev *dev,
3941 const char *reason)
3942 {
3943 /* Must avoid requeueing, if we are in shutdown. */
3944 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
3945 return;
3946 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
3947 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
3948 }
3949
3950 #ifdef CONFIG_PM
3951
b43legacy_suspend(struct ssb_device * dev,pm_message_t state)3952 static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
3953 {
3954 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3955 struct b43legacy_wl *wl = wldev->wl;
3956
3957 b43legacydbg(wl, "Suspending...\n");
3958
3959 mutex_lock(&wl->mutex);
3960 wldev->suspend_init_status = b43legacy_status(wldev);
3961 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
3962 b43legacy_wireless_core_stop(wldev);
3963 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
3964 b43legacy_wireless_core_exit(wldev);
3965 mutex_unlock(&wl->mutex);
3966
3967 b43legacydbg(wl, "Device suspended.\n");
3968
3969 return 0;
3970 }
3971
b43legacy_resume(struct ssb_device * dev)3972 static int b43legacy_resume(struct ssb_device *dev)
3973 {
3974 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3975 struct b43legacy_wl *wl = wldev->wl;
3976 int err = 0;
3977
3978 b43legacydbg(wl, "Resuming...\n");
3979
3980 mutex_lock(&wl->mutex);
3981 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
3982 err = b43legacy_wireless_core_init(wldev);
3983 if (err) {
3984 b43legacyerr(wl, "Resume failed at core init\n");
3985 goto out;
3986 }
3987 }
3988 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
3989 err = b43legacy_wireless_core_start(wldev);
3990 if (err) {
3991 b43legacy_wireless_core_exit(wldev);
3992 b43legacyerr(wl, "Resume failed at core start\n");
3993 goto out;
3994 }
3995 }
3996
3997 b43legacydbg(wl, "Device resumed.\n");
3998 out:
3999 mutex_unlock(&wl->mutex);
4000 return err;
4001 }
4002
4003 #else /* CONFIG_PM */
4004 # define b43legacy_suspend NULL
4005 # define b43legacy_resume NULL
4006 #endif /* CONFIG_PM */
4007
4008 static struct ssb_driver b43legacy_ssb_driver = {
4009 .name = KBUILD_MODNAME,
4010 .id_table = b43legacy_ssb_tbl,
4011 .probe = b43legacy_probe,
4012 .remove = b43legacy_remove,
4013 .suspend = b43legacy_suspend,
4014 .resume = b43legacy_resume,
4015 };
4016
b43legacy_print_driverinfo(void)4017 static void b43legacy_print_driverinfo(void)
4018 {
4019 const char *feat_pci = "", *feat_leds = "",
4020 *feat_pio = "", *feat_dma = "";
4021
4022 #ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
4023 feat_pci = "P";
4024 #endif
4025 #ifdef CONFIG_B43LEGACY_LEDS
4026 feat_leds = "L";
4027 #endif
4028 #ifdef CONFIG_B43LEGACY_PIO
4029 feat_pio = "I";
4030 #endif
4031 #ifdef CONFIG_B43LEGACY_DMA
4032 feat_dma = "D";
4033 #endif
4034 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
4035 "[ Features: %s%s%s%s ]\n",
4036 feat_pci, feat_leds, feat_pio, feat_dma);
4037 }
4038
b43legacy_init(void)4039 static int __init b43legacy_init(void)
4040 {
4041 int err;
4042
4043 b43legacy_debugfs_init();
4044
4045 err = ssb_driver_register(&b43legacy_ssb_driver);
4046 if (err)
4047 goto err_dfs_exit;
4048
4049 b43legacy_print_driverinfo();
4050
4051 return err;
4052
4053 err_dfs_exit:
4054 b43legacy_debugfs_exit();
4055 return err;
4056 }
4057
b43legacy_exit(void)4058 static void __exit b43legacy_exit(void)
4059 {
4060 ssb_driver_unregister(&b43legacy_ssb_driver);
4061 b43legacy_debugfs_exit();
4062 }
4063
4064 module_init(b43legacy_init)
4065 module_exit(b43legacy_exit)
4066