Loading...
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/signal.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
57MODULE_DESCRIPTION("Broadcom B43legacy wireless driver");
58MODULE_AUTHOR("Martin Langer");
59MODULE_AUTHOR("Stefano Brivio");
60MODULE_AUTHOR("Michael Buesch");
61MODULE_LICENSE("GPL");
62
63MODULE_FIRMWARE("b43legacy/ucode2.fw");
64MODULE_FIRMWARE("b43legacy/ucode4.fw");
65
66#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
67static int modparam_pio;
68module_param_named(pio, modparam_pio, int, 0444);
69MODULE_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
76static int modparam_bad_frames_preempt;
77module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
78MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames"
79 " Preemption");
80
81static char modparam_fwpostfix[16];
82module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
83MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load.");
84
85/* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */
86static 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};
91MODULE_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 */
108static 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 }
132static 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
149static 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
156static 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
163static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev);
164static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev);
165static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev);
166static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev);
167
168
169static 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
180void 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
199void 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
218void 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
238void 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
255static 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
271static inline
272void 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
285u32 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
312u16 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
335void 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
363void 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 */
385u32 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 */
399void 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
409void 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
467static 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
477static 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
486static 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
521void 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
528static
529void 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
552static 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
583static 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
590static 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
601static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev)
602{
603 b43legacy_set_slot_time(dev, 9);
604}
605
606static 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 */
615static 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 */
624void 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 */
691static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on)
692{
693 b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4);
694}
695
696void 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
732static 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
761static 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
778static 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
789static 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
797static 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
807static 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
820static 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;
875drop_calculation:
876 dev->noisecalc.calculation_running = false;
877 return;
878 }
879generate_new:
880 b43legacy_generate_noise_sample(dev);
881}
882
883static 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
895static 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
905static 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
920static 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. */
955static 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
966static 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
1047static 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 NL80211_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 */
1078static 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 NL80211_BAND_2GHZ,
1126 *dest_size,
1127 rate);
1128 hdr->duration_id = dur;
1129
1130 return dest_data;
1131}
1132
1133static 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
1166static 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
1180static 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
1190static 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
1238static 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. */
1261static 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
1285static 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
1302static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
1303{
1304}
1305
1306/* Interrupt handler bottom-half */
1307static 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
1403static 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
1415static 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 */
1444static 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);
1490out:
1491 mmiowb();
1492 spin_unlock(&dev->wl->irq_lock);
1493
1494 return ret;
1495}
1496
1497static 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
1509static 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
1516static 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
1524static 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
1582err_format:
1583 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
1584 return -EPROTO;
1585}
1586
1587static int b43legacy_one_core_attach(struct ssb_device *dev,
1588 struct b43legacy_wl *wl);
1589static void b43legacy_one_core_detach(struct ssb_device *dev);
1590
1591static 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
1664err_one_core_detach:
1665 b43legacy_one_core_detach(dev->dev);
1666 goto error;
1667
1668err_load:
1669 b43legacy_print_fw_helptext(dev->wl);
1670 goto error;
1671
1672err_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
1678error:
1679 b43legacy_release_firmware(dev);
1680 return;
1681}
1682
1683static 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
1801error:
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
1810static 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
1864err_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
1871static 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 }
1898out:
1899
1900 return err;
1901}
1902
1903/* Initialize the GPIOs
1904 * http://bcm-specs.sipsolutions.net/GPIO
1905 */
1906static 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. */
1954static 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 */
1969void 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 */
1995void 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 }
2027out:
2028 dev->mac_suspended++;
2029}
2030
2031static 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_BCN_PRBRESP_PROMISC)
2059 ctl |= B43legacy_MACCTL_BEACPROMISC;
2060
2061 /* Workaround: On old hardware the HW-MAC-address-filter
2062 * doesn't work properly, so always run promisc in filter
2063 * it in software. */
2064 if (dev->dev->id.revision <= 4)
2065 ctl |= B43legacy_MACCTL_PROMISC;
2066
2067 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
2068
2069 cfp_pretbtt = 2;
2070 if ((ctl & B43legacy_MACCTL_INFRA) &&
2071 !(ctl & B43legacy_MACCTL_AP)) {
2072 if (dev->dev->bus->chip_id == 0x4306 &&
2073 dev->dev->bus->chip_rev == 3)
2074 cfp_pretbtt = 100;
2075 else
2076 cfp_pretbtt = 50;
2077 }
2078 b43legacy_write16(dev, 0x612, cfp_pretbtt);
2079}
2080
2081static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
2082 u16 rate,
2083 int is_ofdm)
2084{
2085 u16 offset;
2086
2087 if (is_ofdm) {
2088 offset = 0x480;
2089 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2090 } else {
2091 offset = 0x4C0;
2092 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2093 }
2094 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
2095 b43legacy_shm_read16(dev,
2096 B43legacy_SHM_SHARED, offset));
2097}
2098
2099static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
2100{
2101 switch (dev->phy.type) {
2102 case B43legacy_PHYTYPE_G:
2103 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
2104 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
2105 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
2106 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
2107 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
2108 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
2109 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2110 /* fallthrough */
2111 case B43legacy_PHYTYPE_B:
2112 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
2113 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
2114 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
2115 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
2116 break;
2117 default:
2118 B43legacy_BUG_ON(1);
2119 }
2120}
2121
2122/* Set the TX-Antenna for management frames sent by firmware. */
2123static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
2124 int antenna)
2125{
2126 u16 ant = 0;
2127 u16 tmp;
2128
2129 switch (antenna) {
2130 case B43legacy_ANTENNA0:
2131 ant |= B43legacy_TX4_PHY_ANT0;
2132 break;
2133 case B43legacy_ANTENNA1:
2134 ant |= B43legacy_TX4_PHY_ANT1;
2135 break;
2136 case B43legacy_ANTENNA_AUTO:
2137 ant |= B43legacy_TX4_PHY_ANTLAST;
2138 break;
2139 default:
2140 B43legacy_BUG_ON(1);
2141 }
2142
2143 /* FIXME We also need to set the other flags of the PHY control
2144 * field somewhere. */
2145
2146 /* For Beacons */
2147 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2148 B43legacy_SHM_SH_BEACPHYCTL);
2149 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2150 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2151 B43legacy_SHM_SH_BEACPHYCTL, tmp);
2152 /* For ACK/CTS */
2153 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2154 B43legacy_SHM_SH_ACKCTSPHYCTL);
2155 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2156 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2157 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
2158 /* For Probe Resposes */
2159 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2160 B43legacy_SHM_SH_PRPHYCTL);
2161 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2162 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2163 B43legacy_SHM_SH_PRPHYCTL, tmp);
2164}
2165
2166/* This is the opposite of b43legacy_chip_init() */
2167static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
2168{
2169 b43legacy_radio_turn_off(dev, 1);
2170 b43legacy_gpio_cleanup(dev);
2171 /* firmware is released later */
2172}
2173
2174/* Initialize the chip
2175 * http://bcm-specs.sipsolutions.net/ChipInit
2176 */
2177static int b43legacy_chip_init(struct b43legacy_wldev *dev)
2178{
2179 struct b43legacy_phy *phy = &dev->phy;
2180 int err;
2181 int tmp;
2182 u32 value32, macctl;
2183 u16 value16;
2184
2185 /* Initialize the MAC control */
2186 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
2187 if (dev->phy.gmode)
2188 macctl |= B43legacy_MACCTL_GMODE;
2189 macctl |= B43legacy_MACCTL_INFRA;
2190 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
2191
2192 err = b43legacy_upload_microcode(dev);
2193 if (err)
2194 goto out; /* firmware is released later */
2195
2196 err = b43legacy_gpio_init(dev);
2197 if (err)
2198 goto out; /* firmware is released later */
2199
2200 err = b43legacy_upload_initvals(dev);
2201 if (err)
2202 goto err_gpio_clean;
2203 b43legacy_radio_turn_on(dev);
2204
2205 b43legacy_write16(dev, 0x03E6, 0x0000);
2206 err = b43legacy_phy_init(dev);
2207 if (err)
2208 goto err_radio_off;
2209
2210 /* Select initial Interference Mitigation. */
2211 tmp = phy->interfmode;
2212 phy->interfmode = B43legacy_INTERFMODE_NONE;
2213 b43legacy_radio_set_interference_mitigation(dev, tmp);
2214
2215 b43legacy_phy_set_antenna_diversity(dev);
2216 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
2217
2218 if (phy->type == B43legacy_PHYTYPE_B) {
2219 value16 = b43legacy_read16(dev, 0x005E);
2220 value16 |= 0x0004;
2221 b43legacy_write16(dev, 0x005E, value16);
2222 }
2223 b43legacy_write32(dev, 0x0100, 0x01000000);
2224 if (dev->dev->id.revision < 5)
2225 b43legacy_write32(dev, 0x010C, 0x01000000);
2226
2227 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2228 value32 &= ~B43legacy_MACCTL_INFRA;
2229 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2230 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2231 value32 |= B43legacy_MACCTL_INFRA;
2232 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2233
2234 if (b43legacy_using_pio(dev)) {
2235 b43legacy_write32(dev, 0x0210, 0x00000100);
2236 b43legacy_write32(dev, 0x0230, 0x00000100);
2237 b43legacy_write32(dev, 0x0250, 0x00000100);
2238 b43legacy_write32(dev, 0x0270, 0x00000100);
2239 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
2240 0x0000);
2241 }
2242
2243 /* Probe Response Timeout value */
2244 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2245 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
2246
2247 /* Initially set the wireless operation mode. */
2248 b43legacy_adjust_opmode(dev);
2249
2250 if (dev->dev->id.revision < 3) {
2251 b43legacy_write16(dev, 0x060E, 0x0000);
2252 b43legacy_write16(dev, 0x0610, 0x8000);
2253 b43legacy_write16(dev, 0x0604, 0x0000);
2254 b43legacy_write16(dev, 0x0606, 0x0200);
2255 } else {
2256 b43legacy_write32(dev, 0x0188, 0x80000000);
2257 b43legacy_write32(dev, 0x018C, 0x02000000);
2258 }
2259 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
2260 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2261 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2262 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2263 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2264 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2265 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2266
2267 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2268 value32 |= B43legacy_TMSLOW_MACPHYCLKEN;
2269 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2270
2271 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
2272 dev->dev->bus->chipco.fast_pwrup_delay);
2273
2274 /* PHY TX errors counter. */
2275 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2276
2277 B43legacy_WARN_ON(err != 0);
2278 b43legacydbg(dev->wl, "Chip initialized\n");
2279out:
2280 return err;
2281
2282err_radio_off:
2283 b43legacy_radio_turn_off(dev, 1);
2284err_gpio_clean:
2285 b43legacy_gpio_cleanup(dev);
2286 goto out;
2287}
2288
2289static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
2290{
2291 struct b43legacy_phy *phy = &dev->phy;
2292
2293 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
2294 return;
2295
2296 b43legacy_mac_suspend(dev);
2297 b43legacy_phy_lo_g_measure(dev);
2298 b43legacy_mac_enable(dev);
2299}
2300
2301static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
2302{
2303 b43legacy_phy_lo_mark_all_unused(dev);
2304 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
2305 b43legacy_mac_suspend(dev);
2306 b43legacy_calc_nrssi_slope(dev);
2307 b43legacy_mac_enable(dev);
2308 }
2309}
2310
2311static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
2312{
2313 /* Update device statistics. */
2314 b43legacy_calculate_link_quality(dev);
2315}
2316
2317static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
2318{
2319 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
2320
2321 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2322 wmb();
2323}
2324
2325static void do_periodic_work(struct b43legacy_wldev *dev)
2326{
2327 unsigned int state;
2328
2329 state = dev->periodic_state;
2330 if (state % 8 == 0)
2331 b43legacy_periodic_every120sec(dev);
2332 if (state % 4 == 0)
2333 b43legacy_periodic_every60sec(dev);
2334 if (state % 2 == 0)
2335 b43legacy_periodic_every30sec(dev);
2336 b43legacy_periodic_every15sec(dev);
2337}
2338
2339/* Periodic work locking policy:
2340 * The whole periodic work handler is protected by
2341 * wl->mutex. If another lock is needed somewhere in the
2342 * pwork callchain, it's acquired in-place, where it's needed.
2343 */
2344static void b43legacy_periodic_work_handler(struct work_struct *work)
2345{
2346 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
2347 periodic_work.work);
2348 struct b43legacy_wl *wl = dev->wl;
2349 unsigned long delay;
2350
2351 mutex_lock(&wl->mutex);
2352
2353 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
2354 goto out;
2355 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
2356 goto out_requeue;
2357
2358 do_periodic_work(dev);
2359
2360 dev->periodic_state++;
2361out_requeue:
2362 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
2363 delay = msecs_to_jiffies(50);
2364 else
2365 delay = round_jiffies_relative(HZ * 15);
2366 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2367out:
2368 mutex_unlock(&wl->mutex);
2369}
2370
2371static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
2372{
2373 struct delayed_work *work = &dev->periodic_work;
2374
2375 dev->periodic_state = 0;
2376 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
2377 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2378}
2379
2380/* Validate access to the chip (SHM) */
2381static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
2382{
2383 u32 value;
2384 u32 shm_backup;
2385
2386 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
2387 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
2388 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2389 0xAA5555AA)
2390 goto error;
2391 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
2392 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2393 0x55AAAA55)
2394 goto error;
2395 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
2396
2397 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2398 if ((value | B43legacy_MACCTL_GMODE) !=
2399 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
2400 goto error;
2401
2402 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2403 if (value)
2404 goto error;
2405
2406 return 0;
2407error:
2408 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
2409 return -ENODEV;
2410}
2411
2412static void b43legacy_security_init(struct b43legacy_wldev *dev)
2413{
2414 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2415 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2416 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2417 0x0056);
2418 /* KTP is a word address, but we address SHM bytewise.
2419 * So multiply by two.
2420 */
2421 dev->ktp *= 2;
2422 if (dev->dev->id.revision >= 5)
2423 /* Number of RCMTA address slots */
2424 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
2425 dev->max_nr_keys - 8);
2426}
2427
2428#ifdef CONFIG_B43LEGACY_HWRNG
2429static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
2430{
2431 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
2432 unsigned long flags;
2433
2434 /* Don't take wl->mutex here, as it could deadlock with
2435 * hwrng internal locking. It's not needed to take
2436 * wl->mutex here, anyway. */
2437
2438 spin_lock_irqsave(&wl->irq_lock, flags);
2439 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
2440 spin_unlock_irqrestore(&wl->irq_lock, flags);
2441
2442 return (sizeof(u16));
2443}
2444#endif
2445
2446static void b43legacy_rng_exit(struct b43legacy_wl *wl)
2447{
2448#ifdef CONFIG_B43LEGACY_HWRNG
2449 if (wl->rng_initialized)
2450 hwrng_unregister(&wl->rng);
2451#endif
2452}
2453
2454static int b43legacy_rng_init(struct b43legacy_wl *wl)
2455{
2456 int err = 0;
2457
2458#ifdef CONFIG_B43LEGACY_HWRNG
2459 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2460 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2461 wl->rng.name = wl->rng_name;
2462 wl->rng.data_read = b43legacy_rng_read;
2463 wl->rng.priv = (unsigned long)wl;
2464 wl->rng_initialized = 1;
2465 err = hwrng_register(&wl->rng);
2466 if (err) {
2467 wl->rng_initialized = 0;
2468 b43legacyerr(wl, "Failed to register the random "
2469 "number generator (%d)\n", err);
2470 }
2471
2472#endif
2473 return err;
2474}
2475
2476static void b43legacy_tx_work(struct work_struct *work)
2477{
2478 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
2479 tx_work);
2480 struct b43legacy_wldev *dev;
2481 struct sk_buff *skb;
2482 int queue_num;
2483 int err = 0;
2484
2485 mutex_lock(&wl->mutex);
2486 dev = wl->current_dev;
2487 if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) {
2488 mutex_unlock(&wl->mutex);
2489 return;
2490 }
2491
2492 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2493 while (skb_queue_len(&wl->tx_queue[queue_num])) {
2494 skb = skb_dequeue(&wl->tx_queue[queue_num]);
2495 if (b43legacy_using_pio(dev))
2496 err = b43legacy_pio_tx(dev, skb);
2497 else
2498 err = b43legacy_dma_tx(dev, skb);
2499 if (err == -ENOSPC) {
2500 wl->tx_queue_stopped[queue_num] = 1;
2501 ieee80211_stop_queue(wl->hw, queue_num);
2502 skb_queue_head(&wl->tx_queue[queue_num], skb);
2503 break;
2504 }
2505 if (unlikely(err))
2506 dev_kfree_skb(skb); /* Drop it */
2507 err = 0;
2508 }
2509
2510 if (!err)
2511 wl->tx_queue_stopped[queue_num] = 0;
2512 }
2513
2514 mutex_unlock(&wl->mutex);
2515}
2516
2517static void b43legacy_op_tx(struct ieee80211_hw *hw,
2518 struct ieee80211_tx_control *control,
2519 struct sk_buff *skb)
2520{
2521 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2522
2523 if (unlikely(skb->len < 2 + 2 + 6)) {
2524 /* Too short, this can't be a valid frame. */
2525 dev_kfree_skb_any(skb);
2526 return;
2527 }
2528 B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags);
2529
2530 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
2531 if (!wl->tx_queue_stopped[skb->queue_mapping])
2532 ieee80211_queue_work(wl->hw, &wl->tx_work);
2533 else
2534 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
2535}
2536
2537static int b43legacy_op_conf_tx(struct ieee80211_hw *hw,
2538 struct ieee80211_vif *vif, u16 queue,
2539 const struct ieee80211_tx_queue_params *params)
2540{
2541 return 0;
2542}
2543
2544static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
2545 struct ieee80211_low_level_stats *stats)
2546{
2547 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2548 unsigned long flags;
2549
2550 spin_lock_irqsave(&wl->irq_lock, flags);
2551 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2552 spin_unlock_irqrestore(&wl->irq_lock, flags);
2553
2554 return 0;
2555}
2556
2557static const char *phymode_to_string(unsigned int phymode)
2558{
2559 switch (phymode) {
2560 case B43legacy_PHYMODE_B:
2561 return "B";
2562 case B43legacy_PHYMODE_G:
2563 return "G";
2564 default:
2565 B43legacy_BUG_ON(1);
2566 }
2567 return "";
2568}
2569
2570static int find_wldev_for_phymode(struct b43legacy_wl *wl,
2571 unsigned int phymode,
2572 struct b43legacy_wldev **dev,
2573 bool *gmode)
2574{
2575 struct b43legacy_wldev *d;
2576
2577 list_for_each_entry(d, &wl->devlist, list) {
2578 if (d->phy.possible_phymodes & phymode) {
2579 /* Ok, this device supports the PHY-mode.
2580 * Set the gmode bit. */
2581 *gmode = true;
2582 *dev = d;
2583
2584 return 0;
2585 }
2586 }
2587
2588 return -ESRCH;
2589}
2590
2591static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
2592{
2593 struct ssb_device *sdev = dev->dev;
2594 u32 tmslow;
2595
2596 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2597 tmslow &= ~B43legacy_TMSLOW_GMODE;
2598 tmslow |= B43legacy_TMSLOW_PHYRESET;
2599 tmslow |= SSB_TMSLOW_FGC;
2600 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2601 msleep(1);
2602
2603 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2604 tmslow &= ~SSB_TMSLOW_FGC;
2605 tmslow |= B43legacy_TMSLOW_PHYRESET;
2606 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2607 msleep(1);
2608}
2609
2610/* Expects wl->mutex locked */
2611static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
2612 unsigned int new_mode)
2613{
2614 struct b43legacy_wldev *uninitialized_var(up_dev);
2615 struct b43legacy_wldev *down_dev;
2616 int err;
2617 bool gmode = false;
2618 int prev_status;
2619
2620 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2621 if (err) {
2622 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
2623 phymode_to_string(new_mode));
2624 return err;
2625 }
2626 if ((up_dev == wl->current_dev) &&
2627 (!!wl->current_dev->phy.gmode == !!gmode))
2628 /* This device is already running. */
2629 return 0;
2630 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2631 phymode_to_string(new_mode));
2632 down_dev = wl->current_dev;
2633
2634 prev_status = b43legacy_status(down_dev);
2635 /* Shutdown the currently running core. */
2636 if (prev_status >= B43legacy_STAT_STARTED)
2637 b43legacy_wireless_core_stop(down_dev);
2638 if (prev_status >= B43legacy_STAT_INITIALIZED)
2639 b43legacy_wireless_core_exit(down_dev);
2640
2641 if (down_dev != up_dev)
2642 /* We switch to a different core, so we put PHY into
2643 * RESET on the old core. */
2644 b43legacy_put_phy_into_reset(down_dev);
2645
2646 /* Now start the new core. */
2647 up_dev->phy.gmode = gmode;
2648 if (prev_status >= B43legacy_STAT_INITIALIZED) {
2649 err = b43legacy_wireless_core_init(up_dev);
2650 if (err) {
2651 b43legacyerr(wl, "Fatal: Could not initialize device"
2652 " for newly selected %s-PHY mode\n",
2653 phymode_to_string(new_mode));
2654 goto init_failure;
2655 }
2656 }
2657 if (prev_status >= B43legacy_STAT_STARTED) {
2658 err = b43legacy_wireless_core_start(up_dev);
2659 if (err) {
2660 b43legacyerr(wl, "Fatal: Could not start device for "
2661 "newly selected %s-PHY mode\n",
2662 phymode_to_string(new_mode));
2663 b43legacy_wireless_core_exit(up_dev);
2664 goto init_failure;
2665 }
2666 }
2667 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
2668
2669 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
2670
2671 wl->current_dev = up_dev;
2672
2673 return 0;
2674init_failure:
2675 /* Whoops, failed to init the new core. No core is operating now. */
2676 wl->current_dev = NULL;
2677 return err;
2678}
2679
2680/* Write the short and long frame retry limit values. */
2681static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
2682 unsigned int short_retry,
2683 unsigned int long_retry)
2684{
2685 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
2686 * the chip-internal counter. */
2687 short_retry = min(short_retry, (unsigned int)0xF);
2688 long_retry = min(long_retry, (unsigned int)0xF);
2689
2690 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
2691 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
2692}
2693
2694static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
2695 u32 changed)
2696{
2697 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2698 struct b43legacy_wldev *dev;
2699 struct b43legacy_phy *phy;
2700 struct ieee80211_conf *conf = &hw->conf;
2701 unsigned long flags;
2702 unsigned int new_phymode = 0xFFFF;
2703 int antenna_tx;
2704 int err = 0;
2705
2706 antenna_tx = B43legacy_ANTENNA_DEFAULT;
2707
2708 mutex_lock(&wl->mutex);
2709 dev = wl->current_dev;
2710 phy = &dev->phy;
2711
2712 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
2713 b43legacy_set_retry_limits(dev,
2714 conf->short_frame_max_tx_count,
2715 conf->long_frame_max_tx_count);
2716 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
2717 if (!changed)
2718 goto out_unlock_mutex;
2719
2720 /* Switch the PHY mode (if necessary). */
2721 switch (conf->chandef.chan->band) {
2722 case NL80211_BAND_2GHZ:
2723 if (phy->type == B43legacy_PHYTYPE_B)
2724 new_phymode = B43legacy_PHYMODE_B;
2725 else
2726 new_phymode = B43legacy_PHYMODE_G;
2727 break;
2728 default:
2729 B43legacy_WARN_ON(1);
2730 }
2731 err = b43legacy_switch_phymode(wl, new_phymode);
2732 if (err)
2733 goto out_unlock_mutex;
2734
2735 /* Disable IRQs while reconfiguring the device.
2736 * This makes it possible to drop the spinlock throughout
2737 * the reconfiguration process. */
2738 spin_lock_irqsave(&wl->irq_lock, flags);
2739 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2740 spin_unlock_irqrestore(&wl->irq_lock, flags);
2741 goto out_unlock_mutex;
2742 }
2743 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2744 spin_unlock_irqrestore(&wl->irq_lock, flags);
2745 b43legacy_synchronize_irq(dev);
2746
2747 /* Switch to the requested channel.
2748 * The firmware takes care of races with the TX handler. */
2749 if (conf->chandef.chan->hw_value != phy->channel)
2750 b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value,
2751 0);
2752
2753 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
2754
2755 /* Adjust the desired TX power level. */
2756 if (conf->power_level != 0) {
2757 if (conf->power_level != phy->power_level) {
2758 phy->power_level = conf->power_level;
2759 b43legacy_phy_xmitpower(dev);
2760 }
2761 }
2762
2763 /* Antennas for RX and management frame TX. */
2764 b43legacy_mgmtframe_txantenna(dev, antenna_tx);
2765
2766 if (wl->radio_enabled != phy->radio_on) {
2767 if (wl->radio_enabled) {
2768 b43legacy_radio_turn_on(dev);
2769 b43legacyinfo(dev->wl, "Radio turned on by software\n");
2770 if (!dev->radio_hw_enable)
2771 b43legacyinfo(dev->wl, "The hardware RF-kill"
2772 " button still turns the radio"
2773 " physically off. Press the"
2774 " button to turn it on.\n");
2775 } else {
2776 b43legacy_radio_turn_off(dev, 0);
2777 b43legacyinfo(dev->wl, "Radio turned off by"
2778 " software\n");
2779 }
2780 }
2781
2782 spin_lock_irqsave(&wl->irq_lock, flags);
2783 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2784 mmiowb();
2785 spin_unlock_irqrestore(&wl->irq_lock, flags);
2786out_unlock_mutex:
2787 mutex_unlock(&wl->mutex);
2788
2789 return err;
2790}
2791
2792static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
2793{
2794 struct ieee80211_supported_band *sband =
2795 dev->wl->hw->wiphy->bands[NL80211_BAND_2GHZ];
2796 struct ieee80211_rate *rate;
2797 int i;
2798 u16 basic, direct, offset, basic_offset, rateptr;
2799
2800 for (i = 0; i < sband->n_bitrates; i++) {
2801 rate = &sband->bitrates[i];
2802
2803 if (b43legacy_is_cck_rate(rate->hw_value)) {
2804 direct = B43legacy_SHM_SH_CCKDIRECT;
2805 basic = B43legacy_SHM_SH_CCKBASIC;
2806 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2807 offset &= 0xF;
2808 } else {
2809 direct = B43legacy_SHM_SH_OFDMDIRECT;
2810 basic = B43legacy_SHM_SH_OFDMBASIC;
2811 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2812 offset &= 0xF;
2813 }
2814
2815 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
2816
2817 if (b43legacy_is_cck_rate(rate->hw_value)) {
2818 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2819 basic_offset &= 0xF;
2820 } else {
2821 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2822 basic_offset &= 0xF;
2823 }
2824
2825 /*
2826 * Get the pointer that we need to point to
2827 * from the direct map
2828 */
2829 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2830 direct + 2 * basic_offset);
2831 /* and write it to the basic map */
2832 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2833 basic + 2 * offset, rateptr);
2834 }
2835}
2836
2837static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
2838 struct ieee80211_vif *vif,
2839 struct ieee80211_bss_conf *conf,
2840 u32 changed)
2841{
2842 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2843 struct b43legacy_wldev *dev;
2844 unsigned long flags;
2845
2846 mutex_lock(&wl->mutex);
2847 B43legacy_WARN_ON(wl->vif != vif);
2848
2849 dev = wl->current_dev;
2850
2851 /* Disable IRQs while reconfiguring the device.
2852 * This makes it possible to drop the spinlock throughout
2853 * the reconfiguration process. */
2854 spin_lock_irqsave(&wl->irq_lock, flags);
2855 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2856 spin_unlock_irqrestore(&wl->irq_lock, flags);
2857 goto out_unlock_mutex;
2858 }
2859 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2860
2861 if (changed & BSS_CHANGED_BSSID) {
2862 b43legacy_synchronize_irq(dev);
2863
2864 if (conf->bssid)
2865 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2866 else
2867 eth_zero_addr(wl->bssid);
2868 }
2869
2870 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
2871 if (changed & BSS_CHANGED_BEACON &&
2872 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2873 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2874 b43legacy_update_templates(wl);
2875
2876 if (changed & BSS_CHANGED_BSSID)
2877 b43legacy_write_mac_bssid_templates(dev);
2878 }
2879 spin_unlock_irqrestore(&wl->irq_lock, flags);
2880
2881 b43legacy_mac_suspend(dev);
2882
2883 if (changed & BSS_CHANGED_BEACON_INT &&
2884 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2885 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2886 b43legacy_set_beacon_int(dev, conf->beacon_int);
2887
2888 if (changed & BSS_CHANGED_BASIC_RATES)
2889 b43legacy_update_basic_rates(dev, conf->basic_rates);
2890
2891 if (changed & BSS_CHANGED_ERP_SLOT) {
2892 if (conf->use_short_slot)
2893 b43legacy_short_slot_timing_enable(dev);
2894 else
2895 b43legacy_short_slot_timing_disable(dev);
2896 }
2897
2898 b43legacy_mac_enable(dev);
2899
2900 spin_lock_irqsave(&wl->irq_lock, flags);
2901 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2902 /* XXX: why? */
2903 mmiowb();
2904 spin_unlock_irqrestore(&wl->irq_lock, flags);
2905 out_unlock_mutex:
2906 mutex_unlock(&wl->mutex);
2907}
2908
2909static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
2910 unsigned int changed,
2911 unsigned int *fflags,u64 multicast)
2912{
2913 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2914 struct b43legacy_wldev *dev = wl->current_dev;
2915 unsigned long flags;
2916
2917 if (!dev) {
2918 *fflags = 0;
2919 return;
2920 }
2921
2922 spin_lock_irqsave(&wl->irq_lock, flags);
2923 *fflags &= FIF_ALLMULTI |
2924 FIF_FCSFAIL |
2925 FIF_PLCPFAIL |
2926 FIF_CONTROL |
2927 FIF_OTHER_BSS |
2928 FIF_BCN_PRBRESP_PROMISC;
2929
2930 changed &= FIF_ALLMULTI |
2931 FIF_FCSFAIL |
2932 FIF_PLCPFAIL |
2933 FIF_CONTROL |
2934 FIF_OTHER_BSS |
2935 FIF_BCN_PRBRESP_PROMISC;
2936
2937 wl->filter_flags = *fflags;
2938
2939 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
2940 b43legacy_adjust_opmode(dev);
2941 spin_unlock_irqrestore(&wl->irq_lock, flags);
2942}
2943
2944/* Locking: wl->mutex */
2945static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
2946{
2947 struct b43legacy_wl *wl = dev->wl;
2948 unsigned long flags;
2949 int queue_num;
2950
2951 if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
2952 return;
2953
2954 /* Disable and sync interrupts. We must do this before than
2955 * setting the status to INITIALIZED, as the interrupt handler
2956 * won't care about IRQs then. */
2957 spin_lock_irqsave(&wl->irq_lock, flags);
2958 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2959 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
2960 spin_unlock_irqrestore(&wl->irq_lock, flags);
2961 b43legacy_synchronize_irq(dev);
2962
2963 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
2964
2965 mutex_unlock(&wl->mutex);
2966 /* Must unlock as it would otherwise deadlock. No races here.
2967 * Cancel the possibly running self-rearming periodic work. */
2968 cancel_delayed_work_sync(&dev->periodic_work);
2969 cancel_work_sync(&wl->tx_work);
2970 mutex_lock(&wl->mutex);
2971
2972 /* Drain all TX queues. */
2973 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2974 while (skb_queue_len(&wl->tx_queue[queue_num]))
2975 dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
2976 }
2977
2978b43legacy_mac_suspend(dev);
2979 free_irq(dev->dev->irq, dev);
2980 b43legacydbg(wl, "Wireless interface stopped\n");
2981}
2982
2983/* Locking: wl->mutex */
2984static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
2985{
2986 int err;
2987
2988 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
2989
2990 drain_txstatus_queue(dev);
2991 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
2992 IRQF_SHARED, KBUILD_MODNAME, dev);
2993 if (err) {
2994 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
2995 dev->dev->irq);
2996 goto out;
2997 }
2998 /* We are ready to run. */
2999 ieee80211_wake_queues(dev->wl->hw);
3000 b43legacy_set_status(dev, B43legacy_STAT_STARTED);
3001
3002 /* Start data flow (TX/RX) */
3003 b43legacy_mac_enable(dev);
3004 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3005
3006 /* Start maintenance work */
3007 b43legacy_periodic_tasks_setup(dev);
3008
3009 b43legacydbg(dev->wl, "Wireless interface started\n");
3010out:
3011 return err;
3012}
3013
3014/* Get PHY and RADIO versioning numbers */
3015static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
3016{
3017 struct b43legacy_phy *phy = &dev->phy;
3018 u32 tmp;
3019 u8 analog_type;
3020 u8 phy_type;
3021 u8 phy_rev;
3022 u16 radio_manuf;
3023 u16 radio_ver;
3024 u16 radio_rev;
3025 int unsupported = 0;
3026
3027 /* Get PHY versioning */
3028 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
3029 analog_type = (tmp & B43legacy_PHYVER_ANALOG)
3030 >> B43legacy_PHYVER_ANALOG_SHIFT;
3031 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
3032 phy_rev = (tmp & B43legacy_PHYVER_VERSION);
3033 switch (phy_type) {
3034 case B43legacy_PHYTYPE_B:
3035 if (phy_rev != 2 && phy_rev != 4
3036 && phy_rev != 6 && phy_rev != 7)
3037 unsupported = 1;
3038 break;
3039 case B43legacy_PHYTYPE_G:
3040 if (phy_rev > 8)
3041 unsupported = 1;
3042 break;
3043 default:
3044 unsupported = 1;
3045 }
3046 if (unsupported) {
3047 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
3048 "(Analog %u, Type %u, Revision %u)\n",
3049 analog_type, phy_type, phy_rev);
3050 return -EOPNOTSUPP;
3051 }
3052 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3053 analog_type, phy_type, phy_rev);
3054
3055
3056 /* Get RADIO versioning */
3057 if (dev->dev->bus->chip_id == 0x4317) {
3058 if (dev->dev->bus->chip_rev == 0)
3059 tmp = 0x3205017F;
3060 else if (dev->dev->bus->chip_rev == 1)
3061 tmp = 0x4205017F;
3062 else
3063 tmp = 0x5205017F;
3064 } else {
3065 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3066 B43legacy_RADIOCTL_ID);
3067 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
3068 tmp <<= 16;
3069 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3070 B43legacy_RADIOCTL_ID);
3071 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
3072 }
3073 radio_manuf = (tmp & 0x00000FFF);
3074 radio_ver = (tmp & 0x0FFFF000) >> 12;
3075 radio_rev = (tmp & 0xF0000000) >> 28;
3076 switch (phy_type) {
3077 case B43legacy_PHYTYPE_B:
3078 if ((radio_ver & 0xFFF0) != 0x2050)
3079 unsupported = 1;
3080 break;
3081 case B43legacy_PHYTYPE_G:
3082 if (radio_ver != 0x2050)
3083 unsupported = 1;
3084 break;
3085 default:
3086 B43legacy_BUG_ON(1);
3087 }
3088 if (unsupported) {
3089 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
3090 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3091 radio_manuf, radio_ver, radio_rev);
3092 return -EOPNOTSUPP;
3093 }
3094 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
3095 " Revision %u\n", radio_manuf, radio_ver, radio_rev);
3096
3097
3098 phy->radio_manuf = radio_manuf;
3099 phy->radio_ver = radio_ver;
3100 phy->radio_rev = radio_rev;
3101
3102 phy->analog = analog_type;
3103 phy->type = phy_type;
3104 phy->rev = phy_rev;
3105
3106 return 0;
3107}
3108
3109static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
3110 struct b43legacy_phy *phy)
3111{
3112 struct b43legacy_lopair *lo;
3113 int i;
3114
3115 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3116 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3117
3118 /* Assume the radio is enabled. If it's not enabled, the state will
3119 * immediately get fixed on the first periodic work run. */
3120 dev->radio_hw_enable = true;
3121
3122 phy->savedpctlreg = 0xFFFF;
3123 phy->aci_enable = false;
3124 phy->aci_wlan_automatic = false;
3125 phy->aci_hw_rssi = false;
3126
3127 lo = phy->_lo_pairs;
3128 if (lo)
3129 memset(lo, 0, sizeof(struct b43legacy_lopair) *
3130 B43legacy_LO_COUNT);
3131 phy->max_lb_gain = 0;
3132 phy->trsw_rx_gain = 0;
3133
3134 /* Set default attenuation values. */
3135 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3136 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3137 phy->txctl1 = b43legacy_default_txctl1(dev);
3138 phy->txpwr_offset = 0;
3139
3140 /* NRSSI */
3141 phy->nrssislope = 0;
3142 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3143 phy->nrssi[i] = -1000;
3144 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3145 phy->nrssi_lt[i] = i;
3146
3147 phy->lofcal = 0xFFFF;
3148 phy->initval = 0xFFFF;
3149
3150 phy->interfmode = B43legacy_INTERFMODE_NONE;
3151 phy->channel = 0xFF;
3152}
3153
3154static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
3155{
3156 /* Flags */
3157 dev->dfq_valid = false;
3158
3159 /* Stats */
3160 memset(&dev->stats, 0, sizeof(dev->stats));
3161
3162 setup_struct_phy_for_init(dev, &dev->phy);
3163
3164 /* IRQ related flags */
3165 dev->irq_reason = 0;
3166 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3167 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
3168
3169 dev->mac_suspended = 1;
3170
3171 /* Noise calculation context */
3172 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3173}
3174
3175static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
3176 bool idle) {
3177 u16 pu_delay = 1050;
3178
3179 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3180 pu_delay = 500;
3181 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3182 pu_delay = max(pu_delay, (u16)2400);
3183
3184 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3185 B43legacy_SHM_SH_SPUWKUP, pu_delay);
3186}
3187
3188/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3189static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
3190{
3191 u16 pretbtt;
3192
3193 /* The time value is in microseconds. */
3194 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
3195 pretbtt = 2;
3196 else
3197 pretbtt = 250;
3198 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3199 B43legacy_SHM_SH_PRETBTT, pretbtt);
3200 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
3201}
3202
3203/* Shutdown a wireless core */
3204/* Locking: wl->mutex */
3205static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
3206{
3207 struct b43legacy_phy *phy = &dev->phy;
3208 u32 macctl;
3209
3210 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
3211 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
3212 return;
3213 b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
3214
3215 /* Stop the microcode PSM. */
3216 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
3217 macctl &= ~B43legacy_MACCTL_PSM_RUN;
3218 macctl |= B43legacy_MACCTL_PSM_JMP0;
3219 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
3220
3221 b43legacy_leds_exit(dev);
3222 b43legacy_rng_exit(dev->wl);
3223 b43legacy_pio_free(dev);
3224 b43legacy_dma_free(dev);
3225 b43legacy_chip_exit(dev);
3226 b43legacy_radio_turn_off(dev, 1);
3227 b43legacy_switch_analog(dev, 0);
3228 if (phy->dyn_tssi_tbl)
3229 kfree(phy->tssi2dbm);
3230 kfree(phy->lo_control);
3231 phy->lo_control = NULL;
3232 if (dev->wl->current_beacon) {
3233 dev_kfree_skb_any(dev->wl->current_beacon);
3234 dev->wl->current_beacon = NULL;
3235 }
3236
3237 ssb_device_disable(dev->dev, 0);
3238 ssb_bus_may_powerdown(dev->dev->bus);
3239}
3240
3241static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
3242{
3243 struct b43legacy_phy *phy = &dev->phy;
3244 int i;
3245
3246 /* Set default attenuation values. */
3247 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3248 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3249 phy->txctl1 = b43legacy_default_txctl1(dev);
3250 phy->txctl2 = 0xFFFF;
3251 phy->txpwr_offset = 0;
3252
3253 /* NRSSI */
3254 phy->nrssislope = 0;
3255 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3256 phy->nrssi[i] = -1000;
3257 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3258 phy->nrssi_lt[i] = i;
3259
3260 phy->lofcal = 0xFFFF;
3261 phy->initval = 0xFFFF;
3262
3263 phy->aci_enable = false;
3264 phy->aci_wlan_automatic = false;
3265 phy->aci_hw_rssi = false;
3266
3267 phy->antenna_diversity = 0xFFFF;
3268 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3269 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3270
3271 /* Flags */
3272 phy->calibrated = 0;
3273
3274 if (phy->_lo_pairs)
3275 memset(phy->_lo_pairs, 0,
3276 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
3277 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
3278}
3279
3280/* Initialize a wireless core */
3281static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
3282{
3283 struct b43legacy_wl *wl = dev->wl;
3284 struct ssb_bus *bus = dev->dev->bus;
3285 struct b43legacy_phy *phy = &dev->phy;
3286 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3287 int err;
3288 u32 hf;
3289 u32 tmp;
3290
3291 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3292
3293 err = ssb_bus_powerup(bus, 0);
3294 if (err)
3295 goto out;
3296 if (!ssb_device_is_enabled(dev->dev)) {
3297 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
3298 b43legacy_wireless_core_reset(dev, tmp);
3299 }
3300
3301 if ((phy->type == B43legacy_PHYTYPE_B) ||
3302 (phy->type == B43legacy_PHYTYPE_G)) {
3303 phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair)
3304 * B43legacy_LO_COUNT,
3305 GFP_KERNEL);
3306 if (!phy->_lo_pairs)
3307 return -ENOMEM;
3308 }
3309 setup_struct_wldev_for_init(dev);
3310
3311 err = b43legacy_phy_init_tssi2dbm_table(dev);
3312 if (err)
3313 goto err_kfree_lo_control;
3314
3315 /* Enable IRQ routing to this device. */
3316 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3317
3318 prepare_phy_data_for_init(dev);
3319 b43legacy_phy_calibrate(dev);
3320 err = b43legacy_chip_init(dev);
3321 if (err)
3322 goto err_kfree_tssitbl;
3323 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3324 B43legacy_SHM_SH_WLCOREREV,
3325 dev->dev->id.revision);
3326 hf = b43legacy_hf_read(dev);
3327 if (phy->type == B43legacy_PHYTYPE_G) {
3328 hf |= B43legacy_HF_SYMW;
3329 if (phy->rev == 1)
3330 hf |= B43legacy_HF_GDCW;
3331 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
3332 hf |= B43legacy_HF_OFDMPABOOST;
3333 } else if (phy->type == B43legacy_PHYTYPE_B) {
3334 hf |= B43legacy_HF_SYMW;
3335 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3336 hf &= ~B43legacy_HF_GDCW;
3337 }
3338 b43legacy_hf_write(dev, hf);
3339
3340 b43legacy_set_retry_limits(dev,
3341 B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
3342 B43legacy_DEFAULT_LONG_RETRY_LIMIT);
3343
3344 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3345 0x0044, 3);
3346 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3347 0x0046, 2);
3348
3349 /* Disable sending probe responses from firmware.
3350 * Setting the MaxTime to one usec will always trigger
3351 * a timeout, so we never send any probe resp.
3352 * A timeout of zero is infinite. */
3353 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3354 B43legacy_SHM_SH_PRMAXTIME, 1);
3355
3356 b43legacy_rate_memory_init(dev);
3357
3358 /* Minimum Contention Window */
3359 if (phy->type == B43legacy_PHYTYPE_B)
3360 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3361 0x0003, 31);
3362 else
3363 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3364 0x0003, 15);
3365 /* Maximum Contention Window */
3366 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3367 0x0004, 1023);
3368
3369 do {
3370 if (b43legacy_using_pio(dev))
3371 err = b43legacy_pio_init(dev);
3372 else {
3373 err = b43legacy_dma_init(dev);
3374 if (!err)
3375 b43legacy_qos_init(dev);
3376 }
3377 } while (err == -EAGAIN);
3378 if (err)
3379 goto err_chip_exit;
3380
3381 b43legacy_set_synth_pu_delay(dev, 1);
3382
3383 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3384 b43legacy_upload_card_macaddress(dev);
3385 b43legacy_security_init(dev);
3386 b43legacy_rng_init(wl);
3387
3388 ieee80211_wake_queues(dev->wl->hw);
3389 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
3390
3391 b43legacy_leds_init(dev);
3392out:
3393 return err;
3394
3395err_chip_exit:
3396 b43legacy_chip_exit(dev);
3397err_kfree_tssitbl:
3398 if (phy->dyn_tssi_tbl)
3399 kfree(phy->tssi2dbm);
3400err_kfree_lo_control:
3401 kfree(phy->lo_control);
3402 phy->lo_control = NULL;
3403 ssb_bus_may_powerdown(bus);
3404 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3405 return err;
3406}
3407
3408static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
3409 struct ieee80211_vif *vif)
3410{
3411 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3412 struct b43legacy_wldev *dev;
3413 unsigned long flags;
3414 int err = -EOPNOTSUPP;
3415
3416 /* TODO: allow WDS/AP devices to coexist */
3417
3418 if (vif->type != NL80211_IFTYPE_AP &&
3419 vif->type != NL80211_IFTYPE_STATION &&
3420 vif->type != NL80211_IFTYPE_WDS &&
3421 vif->type != NL80211_IFTYPE_ADHOC)
3422 return -EOPNOTSUPP;
3423
3424 mutex_lock(&wl->mutex);
3425 if (wl->operating)
3426 goto out_mutex_unlock;
3427
3428 b43legacydbg(wl, "Adding Interface type %d\n", vif->type);
3429
3430 dev = wl->current_dev;
3431 wl->operating = true;
3432 wl->vif = vif;
3433 wl->if_type = vif->type;
3434 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
3435
3436 spin_lock_irqsave(&wl->irq_lock, flags);
3437 b43legacy_adjust_opmode(dev);
3438 b43legacy_set_pretbtt(dev);
3439 b43legacy_set_synth_pu_delay(dev, 0);
3440 b43legacy_upload_card_macaddress(dev);
3441 spin_unlock_irqrestore(&wl->irq_lock, flags);
3442
3443 err = 0;
3444 out_mutex_unlock:
3445 mutex_unlock(&wl->mutex);
3446
3447 return err;
3448}
3449
3450static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
3451 struct ieee80211_vif *vif)
3452{
3453 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3454 struct b43legacy_wldev *dev = wl->current_dev;
3455 unsigned long flags;
3456
3457 b43legacydbg(wl, "Removing Interface type %d\n", vif->type);
3458
3459 mutex_lock(&wl->mutex);
3460
3461 B43legacy_WARN_ON(!wl->operating);
3462 B43legacy_WARN_ON(wl->vif != vif);
3463 wl->vif = NULL;
3464
3465 wl->operating = false;
3466
3467 spin_lock_irqsave(&wl->irq_lock, flags);
3468 b43legacy_adjust_opmode(dev);
3469 eth_zero_addr(wl->mac_addr);
3470 b43legacy_upload_card_macaddress(dev);
3471 spin_unlock_irqrestore(&wl->irq_lock, flags);
3472
3473 mutex_unlock(&wl->mutex);
3474}
3475
3476static int b43legacy_op_start(struct ieee80211_hw *hw)
3477{
3478 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3479 struct b43legacy_wldev *dev = wl->current_dev;
3480 int did_init = 0;
3481 int err = 0;
3482
3483 /* Kill all old instance specific information to make sure
3484 * the card won't use it in the short timeframe between start
3485 * and mac80211 reconfiguring it. */
3486 eth_zero_addr(wl->bssid);
3487 eth_zero_addr(wl->mac_addr);
3488 wl->filter_flags = 0;
3489 wl->beacon0_uploaded = false;
3490 wl->beacon1_uploaded = false;
3491 wl->beacon_templates_virgin = true;
3492 wl->radio_enabled = true;
3493
3494 mutex_lock(&wl->mutex);
3495
3496 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
3497 err = b43legacy_wireless_core_init(dev);
3498 if (err)
3499 goto out_mutex_unlock;
3500 did_init = 1;
3501 }
3502
3503 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
3504 err = b43legacy_wireless_core_start(dev);
3505 if (err) {
3506 if (did_init)
3507 b43legacy_wireless_core_exit(dev);
3508 goto out_mutex_unlock;
3509 }
3510 }
3511
3512 wiphy_rfkill_start_polling(hw->wiphy);
3513
3514out_mutex_unlock:
3515 mutex_unlock(&wl->mutex);
3516
3517 return err;
3518}
3519
3520static void b43legacy_op_stop(struct ieee80211_hw *hw)
3521{
3522 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3523 struct b43legacy_wldev *dev = wl->current_dev;
3524
3525 cancel_work_sync(&(wl->beacon_update_trigger));
3526
3527 mutex_lock(&wl->mutex);
3528 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
3529 b43legacy_wireless_core_stop(dev);
3530 b43legacy_wireless_core_exit(dev);
3531 wl->radio_enabled = false;
3532 mutex_unlock(&wl->mutex);
3533}
3534
3535static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
3536 struct ieee80211_sta *sta, bool set)
3537{
3538 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3539 unsigned long flags;
3540
3541 spin_lock_irqsave(&wl->irq_lock, flags);
3542 b43legacy_update_templates(wl);
3543 spin_unlock_irqrestore(&wl->irq_lock, flags);
3544
3545 return 0;
3546}
3547
3548static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
3549 struct survey_info *survey)
3550{
3551 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3552 struct b43legacy_wldev *dev = wl->current_dev;
3553 struct ieee80211_conf *conf = &hw->conf;
3554
3555 if (idx != 0)
3556 return -ENOENT;
3557
3558 survey->channel = conf->chandef.chan;
3559 survey->filled = SURVEY_INFO_NOISE_DBM;
3560 survey->noise = dev->stats.link_noise;
3561
3562 return 0;
3563}
3564
3565static const struct ieee80211_ops b43legacy_hw_ops = {
3566 .tx = b43legacy_op_tx,
3567 .conf_tx = b43legacy_op_conf_tx,
3568 .add_interface = b43legacy_op_add_interface,
3569 .remove_interface = b43legacy_op_remove_interface,
3570 .config = b43legacy_op_dev_config,
3571 .bss_info_changed = b43legacy_op_bss_info_changed,
3572 .configure_filter = b43legacy_op_configure_filter,
3573 .get_stats = b43legacy_op_get_stats,
3574 .start = b43legacy_op_start,
3575 .stop = b43legacy_op_stop,
3576 .set_tim = b43legacy_op_beacon_set_tim,
3577 .get_survey = b43legacy_op_get_survey,
3578 .rfkill_poll = b43legacy_rfkill_poll,
3579};
3580
3581/* Hard-reset the chip. Do not call this directly.
3582 * Use b43legacy_controller_restart()
3583 */
3584static void b43legacy_chip_reset(struct work_struct *work)
3585{
3586 struct b43legacy_wldev *dev =
3587 container_of(work, struct b43legacy_wldev, restart_work);
3588 struct b43legacy_wl *wl = dev->wl;
3589 int err = 0;
3590 int prev_status;
3591
3592 mutex_lock(&wl->mutex);
3593
3594 prev_status = b43legacy_status(dev);
3595 /* Bring the device down... */
3596 if (prev_status >= B43legacy_STAT_STARTED)
3597 b43legacy_wireless_core_stop(dev);
3598 if (prev_status >= B43legacy_STAT_INITIALIZED)
3599 b43legacy_wireless_core_exit(dev);
3600
3601 /* ...and up again. */
3602 if (prev_status >= B43legacy_STAT_INITIALIZED) {
3603 err = b43legacy_wireless_core_init(dev);
3604 if (err)
3605 goto out;
3606 }
3607 if (prev_status >= B43legacy_STAT_STARTED) {
3608 err = b43legacy_wireless_core_start(dev);
3609 if (err) {
3610 b43legacy_wireless_core_exit(dev);
3611 goto out;
3612 }
3613 }
3614out:
3615 if (err)
3616 wl->current_dev = NULL; /* Failed to init the dev. */
3617 mutex_unlock(&wl->mutex);
3618 if (err)
3619 b43legacyerr(wl, "Controller restart FAILED\n");
3620 else
3621 b43legacyinfo(wl, "Controller restarted\n");
3622}
3623
3624static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
3625 int have_bphy,
3626 int have_gphy)
3627{
3628 struct ieee80211_hw *hw = dev->wl->hw;
3629 struct b43legacy_phy *phy = &dev->phy;
3630
3631 phy->possible_phymodes = 0;
3632 if (have_bphy) {
3633 hw->wiphy->bands[NL80211_BAND_2GHZ] =
3634 &b43legacy_band_2GHz_BPHY;
3635 phy->possible_phymodes |= B43legacy_PHYMODE_B;
3636 }
3637
3638 if (have_gphy) {
3639 hw->wiphy->bands[NL80211_BAND_2GHZ] =
3640 &b43legacy_band_2GHz_GPHY;
3641 phy->possible_phymodes |= B43legacy_PHYMODE_G;
3642 }
3643
3644 return 0;
3645}
3646
3647static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
3648{
3649 /* We release firmware that late to not be required to re-request
3650 * is all the time when we reinit the core. */
3651 b43legacy_release_firmware(dev);
3652}
3653
3654static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
3655{
3656 struct b43legacy_wl *wl = dev->wl;
3657 struct ssb_bus *bus = dev->dev->bus;
3658 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
3659 int err;
3660 int have_bphy = 0;
3661 int have_gphy = 0;
3662 u32 tmp;
3663
3664 /* Do NOT do any device initialization here.
3665 * Do it in wireless_core_init() instead.
3666 * This function is for gathering basic information about the HW, only.
3667 * Also some structs may be set up here. But most likely you want to
3668 * have that in core_init(), too.
3669 */
3670
3671 err = ssb_bus_powerup(bus, 0);
3672 if (err) {
3673 b43legacyerr(wl, "Bus powerup failed\n");
3674 goto out;
3675 }
3676 /* Get the PHY type. */
3677 if (dev->dev->id.revision >= 5) {
3678 u32 tmshigh;
3679
3680 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3681 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
3682 if (!have_gphy)
3683 have_bphy = 1;
3684 } else if (dev->dev->id.revision == 4)
3685 have_gphy = 1;
3686 else
3687 have_bphy = 1;
3688
3689 dev->phy.gmode = (have_gphy || have_bphy);
3690 dev->phy.radio_on = true;
3691 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3692 b43legacy_wireless_core_reset(dev, tmp);
3693
3694 err = b43legacy_phy_versioning(dev);
3695 if (err)
3696 goto err_powerdown;
3697 /* Check if this device supports multiband. */
3698 if (!pdev ||
3699 (pdev->device != 0x4312 &&
3700 pdev->device != 0x4319 &&
3701 pdev->device != 0x4324)) {
3702 /* No multiband support. */
3703 have_bphy = 0;
3704 have_gphy = 0;
3705 switch (dev->phy.type) {
3706 case B43legacy_PHYTYPE_B:
3707 have_bphy = 1;
3708 break;
3709 case B43legacy_PHYTYPE_G:
3710 have_gphy = 1;
3711 break;
3712 default:
3713 B43legacy_BUG_ON(1);
3714 }
3715 }
3716 dev->phy.gmode = (have_gphy || have_bphy);
3717 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3718 b43legacy_wireless_core_reset(dev, tmp);
3719
3720 err = b43legacy_validate_chipaccess(dev);
3721 if (err)
3722 goto err_powerdown;
3723 err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
3724 if (err)
3725 goto err_powerdown;
3726
3727 /* Now set some default "current_dev" */
3728 if (!wl->current_dev)
3729 wl->current_dev = dev;
3730 INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
3731
3732 b43legacy_radio_turn_off(dev, 1);
3733 b43legacy_switch_analog(dev, 0);
3734 ssb_device_disable(dev->dev, 0);
3735 ssb_bus_may_powerdown(bus);
3736
3737out:
3738 return err;
3739
3740err_powerdown:
3741 ssb_bus_may_powerdown(bus);
3742 return err;
3743}
3744
3745static void b43legacy_one_core_detach(struct ssb_device *dev)
3746{
3747 struct b43legacy_wldev *wldev;
3748 struct b43legacy_wl *wl;
3749
3750 /* Do not cancel ieee80211-workqueue based work here.
3751 * See comment in b43legacy_remove(). */
3752
3753 wldev = ssb_get_drvdata(dev);
3754 wl = wldev->wl;
3755 b43legacy_debugfs_remove_device(wldev);
3756 b43legacy_wireless_core_detach(wldev);
3757 list_del(&wldev->list);
3758 wl->nr_devs--;
3759 ssb_set_drvdata(dev, NULL);
3760 kfree(wldev);
3761}
3762
3763static int b43legacy_one_core_attach(struct ssb_device *dev,
3764 struct b43legacy_wl *wl)
3765{
3766 struct b43legacy_wldev *wldev;
3767 int err = -ENOMEM;
3768
3769 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3770 if (!wldev)
3771 goto out;
3772
3773 wldev->dev = dev;
3774 wldev->wl = wl;
3775 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
3776 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3777 tasklet_init(&wldev->isr_tasklet,
3778 (void (*)(unsigned long))b43legacy_interrupt_tasklet,
3779 (unsigned long)wldev);
3780 if (modparam_pio)
3781 wldev->__using_pio = true;
3782 INIT_LIST_HEAD(&wldev->list);
3783
3784 err = b43legacy_wireless_core_attach(wldev);
3785 if (err)
3786 goto err_kfree_wldev;
3787
3788 list_add(&wldev->list, &wl->devlist);
3789 wl->nr_devs++;
3790 ssb_set_drvdata(dev, wldev);
3791 b43legacy_debugfs_add_device(wldev);
3792out:
3793 return err;
3794
3795err_kfree_wldev:
3796 kfree(wldev);
3797 return err;
3798}
3799
3800static void b43legacy_sprom_fixup(struct ssb_bus *bus)
3801{
3802 /* boardflags workarounds */
3803 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3804 bus->boardinfo.type == 0x4E &&
3805 bus->sprom.board_rev > 0x40)
3806 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
3807}
3808
3809static void b43legacy_wireless_exit(struct ssb_device *dev,
3810 struct b43legacy_wl *wl)
3811{
3812 struct ieee80211_hw *hw = wl->hw;
3813
3814 ssb_set_devtypedata(dev, NULL);
3815 ieee80211_free_hw(hw);
3816}
3817
3818static int b43legacy_wireless_init(struct ssb_device *dev)
3819{
3820 struct ssb_sprom *sprom = &dev->bus->sprom;
3821 struct ieee80211_hw *hw;
3822 struct b43legacy_wl *wl;
3823 int err = -ENOMEM;
3824 int queue_num;
3825
3826 b43legacy_sprom_fixup(dev->bus);
3827
3828 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
3829 if (!hw) {
3830 b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
3831 goto out;
3832 }
3833
3834 /* fill hw info */
3835 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
3836 ieee80211_hw_set(hw, SIGNAL_DBM);
3837
3838 hw->wiphy->interface_modes =
3839 BIT(NL80211_IFTYPE_AP) |
3840 BIT(NL80211_IFTYPE_STATION) |
3841#ifdef CONFIG_WIRELESS_WDS
3842 BIT(NL80211_IFTYPE_WDS) |
3843#endif
3844 BIT(NL80211_IFTYPE_ADHOC);
3845 hw->queues = 1; /* FIXME: hardware has more queues */
3846 hw->max_rates = 2;
3847 SET_IEEE80211_DEV(hw, dev->dev);
3848 if (is_valid_ether_addr(sprom->et1mac))
3849 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3850 else
3851 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3852
3853 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3854
3855 /* Get and initialize struct b43legacy_wl */
3856 wl = hw_to_b43legacy_wl(hw);
3857 memset(wl, 0, sizeof(*wl));
3858 wl->hw = hw;
3859 spin_lock_init(&wl->irq_lock);
3860 spin_lock_init(&wl->leds_lock);
3861 mutex_init(&wl->mutex);
3862 INIT_LIST_HEAD(&wl->devlist);
3863 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
3864 INIT_WORK(&wl->tx_work, b43legacy_tx_work);
3865
3866 /* Initialize queues and flags. */
3867 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
3868 skb_queue_head_init(&wl->tx_queue[queue_num]);
3869 wl->tx_queue_stopped[queue_num] = 0;
3870 }
3871
3872 ssb_set_devtypedata(dev, wl);
3873 b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n",
3874 dev->bus->chip_id, dev->id.revision);
3875 err = 0;
3876out:
3877 return err;
3878}
3879
3880static int b43legacy_probe(struct ssb_device *dev,
3881 const struct ssb_device_id *id)
3882{
3883 struct b43legacy_wl *wl;
3884 int err;
3885 int first = 0;
3886
3887 wl = ssb_get_devtypedata(dev);
3888 if (!wl) {
3889 /* Probing the first core - setup common struct b43legacy_wl */
3890 first = 1;
3891 err = b43legacy_wireless_init(dev);
3892 if (err)
3893 goto out;
3894 wl = ssb_get_devtypedata(dev);
3895 B43legacy_WARN_ON(!wl);
3896 }
3897 err = b43legacy_one_core_attach(dev, wl);
3898 if (err)
3899 goto err_wireless_exit;
3900
3901 /* setup and start work to load firmware */
3902 INIT_WORK(&wl->firmware_load, b43legacy_request_firmware);
3903 schedule_work(&wl->firmware_load);
3904
3905out:
3906 return err;
3907
3908err_wireless_exit:
3909 if (first)
3910 b43legacy_wireless_exit(dev, wl);
3911 return err;
3912}
3913
3914static void b43legacy_remove(struct ssb_device *dev)
3915{
3916 struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
3917 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3918
3919 /* We must cancel any work here before unregistering from ieee80211,
3920 * as the ieee80211 unreg will destroy the workqueue. */
3921 cancel_work_sync(&wldev->restart_work);
3922 cancel_work_sync(&wl->firmware_load);
3923 complete(&wldev->fw_load_complete);
3924
3925 B43legacy_WARN_ON(!wl);
3926 if (!wldev->fw.ucode)
3927 return; /* NULL if fw never loaded */
3928 if (wl->current_dev == wldev)
3929 ieee80211_unregister_hw(wl->hw);
3930
3931 b43legacy_one_core_detach(dev);
3932
3933 if (list_empty(&wl->devlist))
3934 /* Last core on the chip unregistered.
3935 * We can destroy common struct b43legacy_wl.
3936 */
3937 b43legacy_wireless_exit(dev, wl);
3938}
3939
3940/* Perform a hardware reset. This can be called from any context. */
3941void b43legacy_controller_restart(struct b43legacy_wldev *dev,
3942 const char *reason)
3943{
3944 /* Must avoid requeueing, if we are in shutdown. */
3945 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
3946 return;
3947 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
3948 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
3949}
3950
3951#ifdef CONFIG_PM
3952
3953static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
3954{
3955 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3956 struct b43legacy_wl *wl = wldev->wl;
3957
3958 b43legacydbg(wl, "Suspending...\n");
3959
3960 mutex_lock(&wl->mutex);
3961 wldev->suspend_init_status = b43legacy_status(wldev);
3962 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
3963 b43legacy_wireless_core_stop(wldev);
3964 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
3965 b43legacy_wireless_core_exit(wldev);
3966 mutex_unlock(&wl->mutex);
3967
3968 b43legacydbg(wl, "Device suspended.\n");
3969
3970 return 0;
3971}
3972
3973static int b43legacy_resume(struct ssb_device *dev)
3974{
3975 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3976 struct b43legacy_wl *wl = wldev->wl;
3977 int err = 0;
3978
3979 b43legacydbg(wl, "Resuming...\n");
3980
3981 mutex_lock(&wl->mutex);
3982 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
3983 err = b43legacy_wireless_core_init(wldev);
3984 if (err) {
3985 b43legacyerr(wl, "Resume failed at core init\n");
3986 goto out;
3987 }
3988 }
3989 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
3990 err = b43legacy_wireless_core_start(wldev);
3991 if (err) {
3992 b43legacy_wireless_core_exit(wldev);
3993 b43legacyerr(wl, "Resume failed at core start\n");
3994 goto out;
3995 }
3996 }
3997
3998 b43legacydbg(wl, "Device resumed.\n");
3999out:
4000 mutex_unlock(&wl->mutex);
4001 return err;
4002}
4003
4004#else /* CONFIG_PM */
4005# define b43legacy_suspend NULL
4006# define b43legacy_resume NULL
4007#endif /* CONFIG_PM */
4008
4009static struct ssb_driver b43legacy_ssb_driver = {
4010 .name = KBUILD_MODNAME,
4011 .id_table = b43legacy_ssb_tbl,
4012 .probe = b43legacy_probe,
4013 .remove = b43legacy_remove,
4014 .suspend = b43legacy_suspend,
4015 .resume = b43legacy_resume,
4016};
4017
4018static void b43legacy_print_driverinfo(void)
4019{
4020 const char *feat_pci = "", *feat_leds = "",
4021 *feat_pio = "", *feat_dma = "";
4022
4023#ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
4024 feat_pci = "P";
4025#endif
4026#ifdef CONFIG_B43LEGACY_LEDS
4027 feat_leds = "L";
4028#endif
4029#ifdef CONFIG_B43LEGACY_PIO
4030 feat_pio = "I";
4031#endif
4032#ifdef CONFIG_B43LEGACY_DMA
4033 feat_dma = "D";
4034#endif
4035 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
4036 "[ Features: %s%s%s%s ]\n",
4037 feat_pci, feat_leds, feat_pio, feat_dma);
4038}
4039
4040static int __init b43legacy_init(void)
4041{
4042 int err;
4043
4044 b43legacy_debugfs_init();
4045
4046 err = ssb_driver_register(&b43legacy_ssb_driver);
4047 if (err)
4048 goto err_dfs_exit;
4049
4050 b43legacy_print_driverinfo();
4051
4052 return err;
4053
4054err_dfs_exit:
4055 b43legacy_debugfs_exit();
4056 return err;
4057}
4058
4059static void __exit b43legacy_exit(void)
4060{
4061 ssb_driver_unregister(&b43legacy_ssb_driver);
4062 b43legacy_debugfs_exit();
4063}
4064
4065module_init(b43legacy_init)
4066module_exit(b43legacy_exit)
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
57MODULE_DESCRIPTION("Broadcom B43legacy wireless driver");
58MODULE_AUTHOR("Martin Langer");
59MODULE_AUTHOR("Stefano Brivio");
60MODULE_AUTHOR("Michael Buesch");
61MODULE_LICENSE("GPL");
62
63MODULE_FIRMWARE("b43legacy/ucode2.fw");
64MODULE_FIRMWARE("b43legacy/ucode4.fw");
65
66#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO)
67static int modparam_pio;
68module_param_named(pio, modparam_pio, int, 0444);
69MODULE_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
76static int modparam_bad_frames_preempt;
77module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
78MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames"
79 " Preemption");
80
81static char modparam_fwpostfix[16];
82module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
83MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load.");
84
85/* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */
86static 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};
91MODULE_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 */
108static 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 }
132static 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
149static 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
156static 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
163static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev);
164static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev);
165static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev);
166static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev);
167
168
169static 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
180void 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
199void 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
218void 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
238void 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
255static 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
271static inline
272void 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
285u32 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
312u16 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
335void 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
363void 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 */
385u32 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 */
399void 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
409void 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
467static 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
477static 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
486static 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
521void 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
528static
529void 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
552static 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
583static 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
590static 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
601static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev)
602{
603 b43legacy_set_slot_time(dev, 9);
604}
605
606static 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 */
615static 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 */
624void 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 */
691static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on)
692{
693 b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4);
694}
695
696void 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
732static 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
761static 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
778static 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
789static 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
797static 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
807static 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
820static 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;
875drop_calculation:
876 dev->noisecalc.calculation_running = false;
877 return;
878 }
879generate_new:
880 b43legacy_generate_noise_sample(dev);
881}
882
883static 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
895static 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
905static 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
920static 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. */
955static 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
966static 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
1047static 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 */
1078static 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
1133static 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
1166static 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
1180static 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
1190static 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
1238static 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. */
1261static 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
1285static 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
1302static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
1303{
1304}
1305
1306/* Interrupt handler bottom-half */
1307static 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
1403static 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
1415static 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 */
1444static 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);
1490out:
1491 mmiowb();
1492 spin_unlock(&dev->wl->irq_lock);
1493
1494 return ret;
1495}
1496
1497static 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
1509static 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
1516static 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
1524static 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
1582err_format:
1583 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
1584 return -EPROTO;
1585}
1586
1587static int b43legacy_one_core_attach(struct ssb_device *dev,
1588 struct b43legacy_wl *wl);
1589static void b43legacy_one_core_detach(struct ssb_device *dev);
1590
1591static 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
1664err_one_core_detach:
1665 b43legacy_one_core_detach(dev->dev);
1666 goto error;
1667
1668err_load:
1669 b43legacy_print_fw_helptext(dev->wl);
1670 goto error;
1671
1672err_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
1678error:
1679 b43legacy_release_firmware(dev);
1680 return;
1681}
1682
1683static 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
1801error:
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
1810static 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
1864err_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
1871static 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 }
1898out:
1899
1900 return err;
1901}
1902
1903/* Initialize the GPIOs
1904 * http://bcm-specs.sipsolutions.net/GPIO
1905 */
1906static 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. */
1954static 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 */
1969void 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 */
1995void 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 }
2027out:
2028 dev->mac_suspended++;
2029}
2030
2031static 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_BCN_PRBRESP_PROMISC)
2059 ctl |= B43legacy_MACCTL_BEACPROMISC;
2060
2061 /* Workaround: On old hardware the HW-MAC-address-filter
2062 * doesn't work properly, so always run promisc in filter
2063 * it in software. */
2064 if (dev->dev->id.revision <= 4)
2065 ctl |= B43legacy_MACCTL_PROMISC;
2066
2067 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
2068
2069 cfp_pretbtt = 2;
2070 if ((ctl & B43legacy_MACCTL_INFRA) &&
2071 !(ctl & B43legacy_MACCTL_AP)) {
2072 if (dev->dev->bus->chip_id == 0x4306 &&
2073 dev->dev->bus->chip_rev == 3)
2074 cfp_pretbtt = 100;
2075 else
2076 cfp_pretbtt = 50;
2077 }
2078 b43legacy_write16(dev, 0x612, cfp_pretbtt);
2079}
2080
2081static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
2082 u16 rate,
2083 int is_ofdm)
2084{
2085 u16 offset;
2086
2087 if (is_ofdm) {
2088 offset = 0x480;
2089 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2090 } else {
2091 offset = 0x4C0;
2092 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2093 }
2094 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
2095 b43legacy_shm_read16(dev,
2096 B43legacy_SHM_SHARED, offset));
2097}
2098
2099static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
2100{
2101 switch (dev->phy.type) {
2102 case B43legacy_PHYTYPE_G:
2103 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
2104 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
2105 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
2106 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
2107 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
2108 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
2109 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2110 /* fallthrough */
2111 case B43legacy_PHYTYPE_B:
2112 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
2113 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
2114 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
2115 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
2116 break;
2117 default:
2118 B43legacy_BUG_ON(1);
2119 }
2120}
2121
2122/* Set the TX-Antenna for management frames sent by firmware. */
2123static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
2124 int antenna)
2125{
2126 u16 ant = 0;
2127 u16 tmp;
2128
2129 switch (antenna) {
2130 case B43legacy_ANTENNA0:
2131 ant |= B43legacy_TX4_PHY_ANT0;
2132 break;
2133 case B43legacy_ANTENNA1:
2134 ant |= B43legacy_TX4_PHY_ANT1;
2135 break;
2136 case B43legacy_ANTENNA_AUTO:
2137 ant |= B43legacy_TX4_PHY_ANTLAST;
2138 break;
2139 default:
2140 B43legacy_BUG_ON(1);
2141 }
2142
2143 /* FIXME We also need to set the other flags of the PHY control
2144 * field somewhere. */
2145
2146 /* For Beacons */
2147 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2148 B43legacy_SHM_SH_BEACPHYCTL);
2149 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2150 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2151 B43legacy_SHM_SH_BEACPHYCTL, tmp);
2152 /* For ACK/CTS */
2153 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2154 B43legacy_SHM_SH_ACKCTSPHYCTL);
2155 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2156 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2157 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
2158 /* For Probe Resposes */
2159 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2160 B43legacy_SHM_SH_PRPHYCTL);
2161 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2162 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2163 B43legacy_SHM_SH_PRPHYCTL, tmp);
2164}
2165
2166/* This is the opposite of b43legacy_chip_init() */
2167static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
2168{
2169 b43legacy_radio_turn_off(dev, 1);
2170 b43legacy_gpio_cleanup(dev);
2171 /* firmware is released later */
2172}
2173
2174/* Initialize the chip
2175 * http://bcm-specs.sipsolutions.net/ChipInit
2176 */
2177static int b43legacy_chip_init(struct b43legacy_wldev *dev)
2178{
2179 struct b43legacy_phy *phy = &dev->phy;
2180 int err;
2181 int tmp;
2182 u32 value32, macctl;
2183 u16 value16;
2184
2185 /* Initialize the MAC control */
2186 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
2187 if (dev->phy.gmode)
2188 macctl |= B43legacy_MACCTL_GMODE;
2189 macctl |= B43legacy_MACCTL_INFRA;
2190 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
2191
2192 err = b43legacy_upload_microcode(dev);
2193 if (err)
2194 goto out; /* firmware is released later */
2195
2196 err = b43legacy_gpio_init(dev);
2197 if (err)
2198 goto out; /* firmware is released later */
2199
2200 err = b43legacy_upload_initvals(dev);
2201 if (err)
2202 goto err_gpio_clean;
2203 b43legacy_radio_turn_on(dev);
2204
2205 b43legacy_write16(dev, 0x03E6, 0x0000);
2206 err = b43legacy_phy_init(dev);
2207 if (err)
2208 goto err_radio_off;
2209
2210 /* Select initial Interference Mitigation. */
2211 tmp = phy->interfmode;
2212 phy->interfmode = B43legacy_INTERFMODE_NONE;
2213 b43legacy_radio_set_interference_mitigation(dev, tmp);
2214
2215 b43legacy_phy_set_antenna_diversity(dev);
2216 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
2217
2218 if (phy->type == B43legacy_PHYTYPE_B) {
2219 value16 = b43legacy_read16(dev, 0x005E);
2220 value16 |= 0x0004;
2221 b43legacy_write16(dev, 0x005E, value16);
2222 }
2223 b43legacy_write32(dev, 0x0100, 0x01000000);
2224 if (dev->dev->id.revision < 5)
2225 b43legacy_write32(dev, 0x010C, 0x01000000);
2226
2227 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2228 value32 &= ~B43legacy_MACCTL_INFRA;
2229 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2230 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2231 value32 |= B43legacy_MACCTL_INFRA;
2232 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2233
2234 if (b43legacy_using_pio(dev)) {
2235 b43legacy_write32(dev, 0x0210, 0x00000100);
2236 b43legacy_write32(dev, 0x0230, 0x00000100);
2237 b43legacy_write32(dev, 0x0250, 0x00000100);
2238 b43legacy_write32(dev, 0x0270, 0x00000100);
2239 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
2240 0x0000);
2241 }
2242
2243 /* Probe Response Timeout value */
2244 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2245 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
2246
2247 /* Initially set the wireless operation mode. */
2248 b43legacy_adjust_opmode(dev);
2249
2250 if (dev->dev->id.revision < 3) {
2251 b43legacy_write16(dev, 0x060E, 0x0000);
2252 b43legacy_write16(dev, 0x0610, 0x8000);
2253 b43legacy_write16(dev, 0x0604, 0x0000);
2254 b43legacy_write16(dev, 0x0606, 0x0200);
2255 } else {
2256 b43legacy_write32(dev, 0x0188, 0x80000000);
2257 b43legacy_write32(dev, 0x018C, 0x02000000);
2258 }
2259 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
2260 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2261 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2262 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2263 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2264 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2265 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2266
2267 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2268 value32 |= B43legacy_TMSLOW_MACPHYCLKEN;
2269 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2270
2271 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
2272 dev->dev->bus->chipco.fast_pwrup_delay);
2273
2274 /* PHY TX errors counter. */
2275 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2276
2277 B43legacy_WARN_ON(err != 0);
2278 b43legacydbg(dev->wl, "Chip initialized\n");
2279out:
2280 return err;
2281
2282err_radio_off:
2283 b43legacy_radio_turn_off(dev, 1);
2284err_gpio_clean:
2285 b43legacy_gpio_cleanup(dev);
2286 goto out;
2287}
2288
2289static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
2290{
2291 struct b43legacy_phy *phy = &dev->phy;
2292
2293 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
2294 return;
2295
2296 b43legacy_mac_suspend(dev);
2297 b43legacy_phy_lo_g_measure(dev);
2298 b43legacy_mac_enable(dev);
2299}
2300
2301static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
2302{
2303 b43legacy_phy_lo_mark_all_unused(dev);
2304 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
2305 b43legacy_mac_suspend(dev);
2306 b43legacy_calc_nrssi_slope(dev);
2307 b43legacy_mac_enable(dev);
2308 }
2309}
2310
2311static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
2312{
2313 /* Update device statistics. */
2314 b43legacy_calculate_link_quality(dev);
2315}
2316
2317static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
2318{
2319 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
2320
2321 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2322 wmb();
2323}
2324
2325static void do_periodic_work(struct b43legacy_wldev *dev)
2326{
2327 unsigned int state;
2328
2329 state = dev->periodic_state;
2330 if (state % 8 == 0)
2331 b43legacy_periodic_every120sec(dev);
2332 if (state % 4 == 0)
2333 b43legacy_periodic_every60sec(dev);
2334 if (state % 2 == 0)
2335 b43legacy_periodic_every30sec(dev);
2336 b43legacy_periodic_every15sec(dev);
2337}
2338
2339/* Periodic work locking policy:
2340 * The whole periodic work handler is protected by
2341 * wl->mutex. If another lock is needed somewhere in the
2342 * pwork callchain, it's acquired in-place, where it's needed.
2343 */
2344static void b43legacy_periodic_work_handler(struct work_struct *work)
2345{
2346 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
2347 periodic_work.work);
2348 struct b43legacy_wl *wl = dev->wl;
2349 unsigned long delay;
2350
2351 mutex_lock(&wl->mutex);
2352
2353 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
2354 goto out;
2355 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
2356 goto out_requeue;
2357
2358 do_periodic_work(dev);
2359
2360 dev->periodic_state++;
2361out_requeue:
2362 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
2363 delay = msecs_to_jiffies(50);
2364 else
2365 delay = round_jiffies_relative(HZ * 15);
2366 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2367out:
2368 mutex_unlock(&wl->mutex);
2369}
2370
2371static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
2372{
2373 struct delayed_work *work = &dev->periodic_work;
2374
2375 dev->periodic_state = 0;
2376 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
2377 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2378}
2379
2380/* Validate access to the chip (SHM) */
2381static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
2382{
2383 u32 value;
2384 u32 shm_backup;
2385
2386 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
2387 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
2388 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2389 0xAA5555AA)
2390 goto error;
2391 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
2392 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2393 0x55AAAA55)
2394 goto error;
2395 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
2396
2397 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2398 if ((value | B43legacy_MACCTL_GMODE) !=
2399 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
2400 goto error;
2401
2402 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2403 if (value)
2404 goto error;
2405
2406 return 0;
2407error:
2408 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
2409 return -ENODEV;
2410}
2411
2412static void b43legacy_security_init(struct b43legacy_wldev *dev)
2413{
2414 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2415 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2416 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2417 0x0056);
2418 /* KTP is a word address, but we address SHM bytewise.
2419 * So multiply by two.
2420 */
2421 dev->ktp *= 2;
2422 if (dev->dev->id.revision >= 5)
2423 /* Number of RCMTA address slots */
2424 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
2425 dev->max_nr_keys - 8);
2426}
2427
2428#ifdef CONFIG_B43LEGACY_HWRNG
2429static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
2430{
2431 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
2432 unsigned long flags;
2433
2434 /* Don't take wl->mutex here, as it could deadlock with
2435 * hwrng internal locking. It's not needed to take
2436 * wl->mutex here, anyway. */
2437
2438 spin_lock_irqsave(&wl->irq_lock, flags);
2439 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
2440 spin_unlock_irqrestore(&wl->irq_lock, flags);
2441
2442 return (sizeof(u16));
2443}
2444#endif
2445
2446static void b43legacy_rng_exit(struct b43legacy_wl *wl)
2447{
2448#ifdef CONFIG_B43LEGACY_HWRNG
2449 if (wl->rng_initialized)
2450 hwrng_unregister(&wl->rng);
2451#endif
2452}
2453
2454static int b43legacy_rng_init(struct b43legacy_wl *wl)
2455{
2456 int err = 0;
2457
2458#ifdef CONFIG_B43LEGACY_HWRNG
2459 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2460 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2461 wl->rng.name = wl->rng_name;
2462 wl->rng.data_read = b43legacy_rng_read;
2463 wl->rng.priv = (unsigned long)wl;
2464 wl->rng_initialized = 1;
2465 err = hwrng_register(&wl->rng);
2466 if (err) {
2467 wl->rng_initialized = 0;
2468 b43legacyerr(wl, "Failed to register the random "
2469 "number generator (%d)\n", err);
2470 }
2471
2472#endif
2473 return err;
2474}
2475
2476static void b43legacy_tx_work(struct work_struct *work)
2477{
2478 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
2479 tx_work);
2480 struct b43legacy_wldev *dev;
2481 struct sk_buff *skb;
2482 int queue_num;
2483 int err = 0;
2484
2485 mutex_lock(&wl->mutex);
2486 dev = wl->current_dev;
2487 if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) {
2488 mutex_unlock(&wl->mutex);
2489 return;
2490 }
2491
2492 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2493 while (skb_queue_len(&wl->tx_queue[queue_num])) {
2494 skb = skb_dequeue(&wl->tx_queue[queue_num]);
2495 if (b43legacy_using_pio(dev))
2496 err = b43legacy_pio_tx(dev, skb);
2497 else
2498 err = b43legacy_dma_tx(dev, skb);
2499 if (err == -ENOSPC) {
2500 wl->tx_queue_stopped[queue_num] = 1;
2501 ieee80211_stop_queue(wl->hw, queue_num);
2502 skb_queue_head(&wl->tx_queue[queue_num], skb);
2503 break;
2504 }
2505 if (unlikely(err))
2506 dev_kfree_skb(skb); /* Drop it */
2507 err = 0;
2508 }
2509
2510 if (!err)
2511 wl->tx_queue_stopped[queue_num] = 0;
2512 }
2513
2514 mutex_unlock(&wl->mutex);
2515}
2516
2517static void b43legacy_op_tx(struct ieee80211_hw *hw,
2518 struct ieee80211_tx_control *control,
2519 struct sk_buff *skb)
2520{
2521 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2522
2523 if (unlikely(skb->len < 2 + 2 + 6)) {
2524 /* Too short, this can't be a valid frame. */
2525 dev_kfree_skb_any(skb);
2526 return;
2527 }
2528 B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags);
2529
2530 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
2531 if (!wl->tx_queue_stopped[skb->queue_mapping])
2532 ieee80211_queue_work(wl->hw, &wl->tx_work);
2533 else
2534 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
2535}
2536
2537static int b43legacy_op_conf_tx(struct ieee80211_hw *hw,
2538 struct ieee80211_vif *vif, u16 queue,
2539 const struct ieee80211_tx_queue_params *params)
2540{
2541 return 0;
2542}
2543
2544static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
2545 struct ieee80211_low_level_stats *stats)
2546{
2547 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2548 unsigned long flags;
2549
2550 spin_lock_irqsave(&wl->irq_lock, flags);
2551 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2552 spin_unlock_irqrestore(&wl->irq_lock, flags);
2553
2554 return 0;
2555}
2556
2557static const char *phymode_to_string(unsigned int phymode)
2558{
2559 switch (phymode) {
2560 case B43legacy_PHYMODE_B:
2561 return "B";
2562 case B43legacy_PHYMODE_G:
2563 return "G";
2564 default:
2565 B43legacy_BUG_ON(1);
2566 }
2567 return "";
2568}
2569
2570static int find_wldev_for_phymode(struct b43legacy_wl *wl,
2571 unsigned int phymode,
2572 struct b43legacy_wldev **dev,
2573 bool *gmode)
2574{
2575 struct b43legacy_wldev *d;
2576
2577 list_for_each_entry(d, &wl->devlist, list) {
2578 if (d->phy.possible_phymodes & phymode) {
2579 /* Ok, this device supports the PHY-mode.
2580 * Set the gmode bit. */
2581 *gmode = true;
2582 *dev = d;
2583
2584 return 0;
2585 }
2586 }
2587
2588 return -ESRCH;
2589}
2590
2591static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
2592{
2593 struct ssb_device *sdev = dev->dev;
2594 u32 tmslow;
2595
2596 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2597 tmslow &= ~B43legacy_TMSLOW_GMODE;
2598 tmslow |= B43legacy_TMSLOW_PHYRESET;
2599 tmslow |= SSB_TMSLOW_FGC;
2600 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2601 msleep(1);
2602
2603 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2604 tmslow &= ~SSB_TMSLOW_FGC;
2605 tmslow |= B43legacy_TMSLOW_PHYRESET;
2606 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2607 msleep(1);
2608}
2609
2610/* Expects wl->mutex locked */
2611static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
2612 unsigned int new_mode)
2613{
2614 struct b43legacy_wldev *uninitialized_var(up_dev);
2615 struct b43legacy_wldev *down_dev;
2616 int err;
2617 bool gmode = false;
2618 int prev_status;
2619
2620 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2621 if (err) {
2622 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
2623 phymode_to_string(new_mode));
2624 return err;
2625 }
2626 if ((up_dev == wl->current_dev) &&
2627 (!!wl->current_dev->phy.gmode == !!gmode))
2628 /* This device is already running. */
2629 return 0;
2630 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2631 phymode_to_string(new_mode));
2632 down_dev = wl->current_dev;
2633
2634 prev_status = b43legacy_status(down_dev);
2635 /* Shutdown the currently running core. */
2636 if (prev_status >= B43legacy_STAT_STARTED)
2637 b43legacy_wireless_core_stop(down_dev);
2638 if (prev_status >= B43legacy_STAT_INITIALIZED)
2639 b43legacy_wireless_core_exit(down_dev);
2640
2641 if (down_dev != up_dev)
2642 /* We switch to a different core, so we put PHY into
2643 * RESET on the old core. */
2644 b43legacy_put_phy_into_reset(down_dev);
2645
2646 /* Now start the new core. */
2647 up_dev->phy.gmode = gmode;
2648 if (prev_status >= B43legacy_STAT_INITIALIZED) {
2649 err = b43legacy_wireless_core_init(up_dev);
2650 if (err) {
2651 b43legacyerr(wl, "Fatal: Could not initialize device"
2652 " for newly selected %s-PHY mode\n",
2653 phymode_to_string(new_mode));
2654 goto init_failure;
2655 }
2656 }
2657 if (prev_status >= B43legacy_STAT_STARTED) {
2658 err = b43legacy_wireless_core_start(up_dev);
2659 if (err) {
2660 b43legacyerr(wl, "Fatal: Could not start device for "
2661 "newly selected %s-PHY mode\n",
2662 phymode_to_string(new_mode));
2663 b43legacy_wireless_core_exit(up_dev);
2664 goto init_failure;
2665 }
2666 }
2667 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
2668
2669 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
2670
2671 wl->current_dev = up_dev;
2672
2673 return 0;
2674init_failure:
2675 /* Whoops, failed to init the new core. No core is operating now. */
2676 wl->current_dev = NULL;
2677 return err;
2678}
2679
2680/* Write the short and long frame retry limit values. */
2681static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
2682 unsigned int short_retry,
2683 unsigned int long_retry)
2684{
2685 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
2686 * the chip-internal counter. */
2687 short_retry = min(short_retry, (unsigned int)0xF);
2688 long_retry = min(long_retry, (unsigned int)0xF);
2689
2690 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
2691 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
2692}
2693
2694static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
2695 u32 changed)
2696{
2697 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2698 struct b43legacy_wldev *dev;
2699 struct b43legacy_phy *phy;
2700 struct ieee80211_conf *conf = &hw->conf;
2701 unsigned long flags;
2702 unsigned int new_phymode = 0xFFFF;
2703 int antenna_tx;
2704 int err = 0;
2705
2706 antenna_tx = B43legacy_ANTENNA_DEFAULT;
2707
2708 mutex_lock(&wl->mutex);
2709 dev = wl->current_dev;
2710 phy = &dev->phy;
2711
2712 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
2713 b43legacy_set_retry_limits(dev,
2714 conf->short_frame_max_tx_count,
2715 conf->long_frame_max_tx_count);
2716 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
2717 if (!changed)
2718 goto out_unlock_mutex;
2719
2720 /* Switch the PHY mode (if necessary). */
2721 switch (conf->chandef.chan->band) {
2722 case IEEE80211_BAND_2GHZ:
2723 if (phy->type == B43legacy_PHYTYPE_B)
2724 new_phymode = B43legacy_PHYMODE_B;
2725 else
2726 new_phymode = B43legacy_PHYMODE_G;
2727 break;
2728 default:
2729 B43legacy_WARN_ON(1);
2730 }
2731 err = b43legacy_switch_phymode(wl, new_phymode);
2732 if (err)
2733 goto out_unlock_mutex;
2734
2735 /* Disable IRQs while reconfiguring the device.
2736 * This makes it possible to drop the spinlock throughout
2737 * the reconfiguration process. */
2738 spin_lock_irqsave(&wl->irq_lock, flags);
2739 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2740 spin_unlock_irqrestore(&wl->irq_lock, flags);
2741 goto out_unlock_mutex;
2742 }
2743 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2744 spin_unlock_irqrestore(&wl->irq_lock, flags);
2745 b43legacy_synchronize_irq(dev);
2746
2747 /* Switch to the requested channel.
2748 * The firmware takes care of races with the TX handler. */
2749 if (conf->chandef.chan->hw_value != phy->channel)
2750 b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value,
2751 0);
2752
2753 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
2754
2755 /* Adjust the desired TX power level. */
2756 if (conf->power_level != 0) {
2757 if (conf->power_level != phy->power_level) {
2758 phy->power_level = conf->power_level;
2759 b43legacy_phy_xmitpower(dev);
2760 }
2761 }
2762
2763 /* Antennas for RX and management frame TX. */
2764 b43legacy_mgmtframe_txantenna(dev, antenna_tx);
2765
2766 if (wl->radio_enabled != phy->radio_on) {
2767 if (wl->radio_enabled) {
2768 b43legacy_radio_turn_on(dev);
2769 b43legacyinfo(dev->wl, "Radio turned on by software\n");
2770 if (!dev->radio_hw_enable)
2771 b43legacyinfo(dev->wl, "The hardware RF-kill"
2772 " button still turns the radio"
2773 " physically off. Press the"
2774 " button to turn it on.\n");
2775 } else {
2776 b43legacy_radio_turn_off(dev, 0);
2777 b43legacyinfo(dev->wl, "Radio turned off by"
2778 " software\n");
2779 }
2780 }
2781
2782 spin_lock_irqsave(&wl->irq_lock, flags);
2783 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2784 mmiowb();
2785 spin_unlock_irqrestore(&wl->irq_lock, flags);
2786out_unlock_mutex:
2787 mutex_unlock(&wl->mutex);
2788
2789 return err;
2790}
2791
2792static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
2793{
2794 struct ieee80211_supported_band *sband =
2795 dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2796 struct ieee80211_rate *rate;
2797 int i;
2798 u16 basic, direct, offset, basic_offset, rateptr;
2799
2800 for (i = 0; i < sband->n_bitrates; i++) {
2801 rate = &sband->bitrates[i];
2802
2803 if (b43legacy_is_cck_rate(rate->hw_value)) {
2804 direct = B43legacy_SHM_SH_CCKDIRECT;
2805 basic = B43legacy_SHM_SH_CCKBASIC;
2806 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2807 offset &= 0xF;
2808 } else {
2809 direct = B43legacy_SHM_SH_OFDMDIRECT;
2810 basic = B43legacy_SHM_SH_OFDMBASIC;
2811 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2812 offset &= 0xF;
2813 }
2814
2815 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
2816
2817 if (b43legacy_is_cck_rate(rate->hw_value)) {
2818 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2819 basic_offset &= 0xF;
2820 } else {
2821 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2822 basic_offset &= 0xF;
2823 }
2824
2825 /*
2826 * Get the pointer that we need to point to
2827 * from the direct map
2828 */
2829 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2830 direct + 2 * basic_offset);
2831 /* and write it to the basic map */
2832 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2833 basic + 2 * offset, rateptr);
2834 }
2835}
2836
2837static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
2838 struct ieee80211_vif *vif,
2839 struct ieee80211_bss_conf *conf,
2840 u32 changed)
2841{
2842 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2843 struct b43legacy_wldev *dev;
2844 unsigned long flags;
2845
2846 mutex_lock(&wl->mutex);
2847 B43legacy_WARN_ON(wl->vif != vif);
2848
2849 dev = wl->current_dev;
2850
2851 /* Disable IRQs while reconfiguring the device.
2852 * This makes it possible to drop the spinlock throughout
2853 * the reconfiguration process. */
2854 spin_lock_irqsave(&wl->irq_lock, flags);
2855 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2856 spin_unlock_irqrestore(&wl->irq_lock, flags);
2857 goto out_unlock_mutex;
2858 }
2859 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2860
2861 if (changed & BSS_CHANGED_BSSID) {
2862 b43legacy_synchronize_irq(dev);
2863
2864 if (conf->bssid)
2865 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2866 else
2867 eth_zero_addr(wl->bssid);
2868 }
2869
2870 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
2871 if (changed & BSS_CHANGED_BEACON &&
2872 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2873 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2874 b43legacy_update_templates(wl);
2875
2876 if (changed & BSS_CHANGED_BSSID)
2877 b43legacy_write_mac_bssid_templates(dev);
2878 }
2879 spin_unlock_irqrestore(&wl->irq_lock, flags);
2880
2881 b43legacy_mac_suspend(dev);
2882
2883 if (changed & BSS_CHANGED_BEACON_INT &&
2884 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2885 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2886 b43legacy_set_beacon_int(dev, conf->beacon_int);
2887
2888 if (changed & BSS_CHANGED_BASIC_RATES)
2889 b43legacy_update_basic_rates(dev, conf->basic_rates);
2890
2891 if (changed & BSS_CHANGED_ERP_SLOT) {
2892 if (conf->use_short_slot)
2893 b43legacy_short_slot_timing_enable(dev);
2894 else
2895 b43legacy_short_slot_timing_disable(dev);
2896 }
2897
2898 b43legacy_mac_enable(dev);
2899
2900 spin_lock_irqsave(&wl->irq_lock, flags);
2901 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2902 /* XXX: why? */
2903 mmiowb();
2904 spin_unlock_irqrestore(&wl->irq_lock, flags);
2905 out_unlock_mutex:
2906 mutex_unlock(&wl->mutex);
2907}
2908
2909static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
2910 unsigned int changed,
2911 unsigned int *fflags,u64 multicast)
2912{
2913 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2914 struct b43legacy_wldev *dev = wl->current_dev;
2915 unsigned long flags;
2916
2917 if (!dev) {
2918 *fflags = 0;
2919 return;
2920 }
2921
2922 spin_lock_irqsave(&wl->irq_lock, flags);
2923 *fflags &= FIF_ALLMULTI |
2924 FIF_FCSFAIL |
2925 FIF_PLCPFAIL |
2926 FIF_CONTROL |
2927 FIF_OTHER_BSS |
2928 FIF_BCN_PRBRESP_PROMISC;
2929
2930 changed &= FIF_ALLMULTI |
2931 FIF_FCSFAIL |
2932 FIF_PLCPFAIL |
2933 FIF_CONTROL |
2934 FIF_OTHER_BSS |
2935 FIF_BCN_PRBRESP_PROMISC;
2936
2937 wl->filter_flags = *fflags;
2938
2939 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
2940 b43legacy_adjust_opmode(dev);
2941 spin_unlock_irqrestore(&wl->irq_lock, flags);
2942}
2943
2944/* Locking: wl->mutex */
2945static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
2946{
2947 struct b43legacy_wl *wl = dev->wl;
2948 unsigned long flags;
2949 int queue_num;
2950
2951 if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
2952 return;
2953
2954 /* Disable and sync interrupts. We must do this before than
2955 * setting the status to INITIALIZED, as the interrupt handler
2956 * won't care about IRQs then. */
2957 spin_lock_irqsave(&wl->irq_lock, flags);
2958 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2959 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
2960 spin_unlock_irqrestore(&wl->irq_lock, flags);
2961 b43legacy_synchronize_irq(dev);
2962
2963 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
2964
2965 mutex_unlock(&wl->mutex);
2966 /* Must unlock as it would otherwise deadlock. No races here.
2967 * Cancel the possibly running self-rearming periodic work. */
2968 cancel_delayed_work_sync(&dev->periodic_work);
2969 cancel_work_sync(&wl->tx_work);
2970 mutex_lock(&wl->mutex);
2971
2972 /* Drain all TX queues. */
2973 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2974 while (skb_queue_len(&wl->tx_queue[queue_num]))
2975 dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
2976 }
2977
2978b43legacy_mac_suspend(dev);
2979 free_irq(dev->dev->irq, dev);
2980 b43legacydbg(wl, "Wireless interface stopped\n");
2981}
2982
2983/* Locking: wl->mutex */
2984static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
2985{
2986 int err;
2987
2988 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
2989
2990 drain_txstatus_queue(dev);
2991 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
2992 IRQF_SHARED, KBUILD_MODNAME, dev);
2993 if (err) {
2994 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
2995 dev->dev->irq);
2996 goto out;
2997 }
2998 /* We are ready to run. */
2999 ieee80211_wake_queues(dev->wl->hw);
3000 b43legacy_set_status(dev, B43legacy_STAT_STARTED);
3001
3002 /* Start data flow (TX/RX) */
3003 b43legacy_mac_enable(dev);
3004 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
3005
3006 /* Start maintenance work */
3007 b43legacy_periodic_tasks_setup(dev);
3008
3009 b43legacydbg(dev->wl, "Wireless interface started\n");
3010out:
3011 return err;
3012}
3013
3014/* Get PHY and RADIO versioning numbers */
3015static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
3016{
3017 struct b43legacy_phy *phy = &dev->phy;
3018 u32 tmp;
3019 u8 analog_type;
3020 u8 phy_type;
3021 u8 phy_rev;
3022 u16 radio_manuf;
3023 u16 radio_ver;
3024 u16 radio_rev;
3025 int unsupported = 0;
3026
3027 /* Get PHY versioning */
3028 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
3029 analog_type = (tmp & B43legacy_PHYVER_ANALOG)
3030 >> B43legacy_PHYVER_ANALOG_SHIFT;
3031 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
3032 phy_rev = (tmp & B43legacy_PHYVER_VERSION);
3033 switch (phy_type) {
3034 case B43legacy_PHYTYPE_B:
3035 if (phy_rev != 2 && phy_rev != 4
3036 && phy_rev != 6 && phy_rev != 7)
3037 unsupported = 1;
3038 break;
3039 case B43legacy_PHYTYPE_G:
3040 if (phy_rev > 8)
3041 unsupported = 1;
3042 break;
3043 default:
3044 unsupported = 1;
3045 }
3046 if (unsupported) {
3047 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
3048 "(Analog %u, Type %u, Revision %u)\n",
3049 analog_type, phy_type, phy_rev);
3050 return -EOPNOTSUPP;
3051 }
3052 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3053 analog_type, phy_type, phy_rev);
3054
3055
3056 /* Get RADIO versioning */
3057 if (dev->dev->bus->chip_id == 0x4317) {
3058 if (dev->dev->bus->chip_rev == 0)
3059 tmp = 0x3205017F;
3060 else if (dev->dev->bus->chip_rev == 1)
3061 tmp = 0x4205017F;
3062 else
3063 tmp = 0x5205017F;
3064 } else {
3065 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3066 B43legacy_RADIOCTL_ID);
3067 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
3068 tmp <<= 16;
3069 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3070 B43legacy_RADIOCTL_ID);
3071 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
3072 }
3073 radio_manuf = (tmp & 0x00000FFF);
3074 radio_ver = (tmp & 0x0FFFF000) >> 12;
3075 radio_rev = (tmp & 0xF0000000) >> 28;
3076 switch (phy_type) {
3077 case B43legacy_PHYTYPE_B:
3078 if ((radio_ver & 0xFFF0) != 0x2050)
3079 unsupported = 1;
3080 break;
3081 case B43legacy_PHYTYPE_G:
3082 if (radio_ver != 0x2050)
3083 unsupported = 1;
3084 break;
3085 default:
3086 B43legacy_BUG_ON(1);
3087 }
3088 if (unsupported) {
3089 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
3090 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3091 radio_manuf, radio_ver, radio_rev);
3092 return -EOPNOTSUPP;
3093 }
3094 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
3095 " Revision %u\n", radio_manuf, radio_ver, radio_rev);
3096
3097
3098 phy->radio_manuf = radio_manuf;
3099 phy->radio_ver = radio_ver;
3100 phy->radio_rev = radio_rev;
3101
3102 phy->analog = analog_type;
3103 phy->type = phy_type;
3104 phy->rev = phy_rev;
3105
3106 return 0;
3107}
3108
3109static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
3110 struct b43legacy_phy *phy)
3111{
3112 struct b43legacy_lopair *lo;
3113 int i;
3114
3115 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3116 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3117
3118 /* Assume the radio is enabled. If it's not enabled, the state will
3119 * immediately get fixed on the first periodic work run. */
3120 dev->radio_hw_enable = true;
3121
3122 phy->savedpctlreg = 0xFFFF;
3123 phy->aci_enable = false;
3124 phy->aci_wlan_automatic = false;
3125 phy->aci_hw_rssi = false;
3126
3127 lo = phy->_lo_pairs;
3128 if (lo)
3129 memset(lo, 0, sizeof(struct b43legacy_lopair) *
3130 B43legacy_LO_COUNT);
3131 phy->max_lb_gain = 0;
3132 phy->trsw_rx_gain = 0;
3133
3134 /* Set default attenuation values. */
3135 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3136 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3137 phy->txctl1 = b43legacy_default_txctl1(dev);
3138 phy->txpwr_offset = 0;
3139
3140 /* NRSSI */
3141 phy->nrssislope = 0;
3142 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3143 phy->nrssi[i] = -1000;
3144 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3145 phy->nrssi_lt[i] = i;
3146
3147 phy->lofcal = 0xFFFF;
3148 phy->initval = 0xFFFF;
3149
3150 phy->interfmode = B43legacy_INTERFMODE_NONE;
3151 phy->channel = 0xFF;
3152}
3153
3154static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
3155{
3156 /* Flags */
3157 dev->dfq_valid = false;
3158
3159 /* Stats */
3160 memset(&dev->stats, 0, sizeof(dev->stats));
3161
3162 setup_struct_phy_for_init(dev, &dev->phy);
3163
3164 /* IRQ related flags */
3165 dev->irq_reason = 0;
3166 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3167 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
3168
3169 dev->mac_suspended = 1;
3170
3171 /* Noise calculation context */
3172 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3173}
3174
3175static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
3176 bool idle) {
3177 u16 pu_delay = 1050;
3178
3179 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3180 pu_delay = 500;
3181 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3182 pu_delay = max(pu_delay, (u16)2400);
3183
3184 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3185 B43legacy_SHM_SH_SPUWKUP, pu_delay);
3186}
3187
3188/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3189static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
3190{
3191 u16 pretbtt;
3192
3193 /* The time value is in microseconds. */
3194 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
3195 pretbtt = 2;
3196 else
3197 pretbtt = 250;
3198 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3199 B43legacy_SHM_SH_PRETBTT, pretbtt);
3200 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
3201}
3202
3203/* Shutdown a wireless core */
3204/* Locking: wl->mutex */
3205static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
3206{
3207 struct b43legacy_phy *phy = &dev->phy;
3208 u32 macctl;
3209
3210 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
3211 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
3212 return;
3213 b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
3214
3215 /* Stop the microcode PSM. */
3216 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
3217 macctl &= ~B43legacy_MACCTL_PSM_RUN;
3218 macctl |= B43legacy_MACCTL_PSM_JMP0;
3219 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
3220
3221 b43legacy_leds_exit(dev);
3222 b43legacy_rng_exit(dev->wl);
3223 b43legacy_pio_free(dev);
3224 b43legacy_dma_free(dev);
3225 b43legacy_chip_exit(dev);
3226 b43legacy_radio_turn_off(dev, 1);
3227 b43legacy_switch_analog(dev, 0);
3228 if (phy->dyn_tssi_tbl)
3229 kfree(phy->tssi2dbm);
3230 kfree(phy->lo_control);
3231 phy->lo_control = NULL;
3232 if (dev->wl->current_beacon) {
3233 dev_kfree_skb_any(dev->wl->current_beacon);
3234 dev->wl->current_beacon = NULL;
3235 }
3236
3237 ssb_device_disable(dev->dev, 0);
3238 ssb_bus_may_powerdown(dev->dev->bus);
3239}
3240
3241static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
3242{
3243 struct b43legacy_phy *phy = &dev->phy;
3244 int i;
3245
3246 /* Set default attenuation values. */
3247 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3248 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3249 phy->txctl1 = b43legacy_default_txctl1(dev);
3250 phy->txctl2 = 0xFFFF;
3251 phy->txpwr_offset = 0;
3252
3253 /* NRSSI */
3254 phy->nrssislope = 0;
3255 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3256 phy->nrssi[i] = -1000;
3257 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3258 phy->nrssi_lt[i] = i;
3259
3260 phy->lofcal = 0xFFFF;
3261 phy->initval = 0xFFFF;
3262
3263 phy->aci_enable = false;
3264 phy->aci_wlan_automatic = false;
3265 phy->aci_hw_rssi = false;
3266
3267 phy->antenna_diversity = 0xFFFF;
3268 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3269 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3270
3271 /* Flags */
3272 phy->calibrated = 0;
3273
3274 if (phy->_lo_pairs)
3275 memset(phy->_lo_pairs, 0,
3276 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
3277 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
3278}
3279
3280/* Initialize a wireless core */
3281static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
3282{
3283 struct b43legacy_wl *wl = dev->wl;
3284 struct ssb_bus *bus = dev->dev->bus;
3285 struct b43legacy_phy *phy = &dev->phy;
3286 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3287 int err;
3288 u32 hf;
3289 u32 tmp;
3290
3291 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3292
3293 err = ssb_bus_powerup(bus, 0);
3294 if (err)
3295 goto out;
3296 if (!ssb_device_is_enabled(dev->dev)) {
3297 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
3298 b43legacy_wireless_core_reset(dev, tmp);
3299 }
3300
3301 if ((phy->type == B43legacy_PHYTYPE_B) ||
3302 (phy->type == B43legacy_PHYTYPE_G)) {
3303 phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair)
3304 * B43legacy_LO_COUNT,
3305 GFP_KERNEL);
3306 if (!phy->_lo_pairs)
3307 return -ENOMEM;
3308 }
3309 setup_struct_wldev_for_init(dev);
3310
3311 err = b43legacy_phy_init_tssi2dbm_table(dev);
3312 if (err)
3313 goto err_kfree_lo_control;
3314
3315 /* Enable IRQ routing to this device. */
3316 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3317
3318 prepare_phy_data_for_init(dev);
3319 b43legacy_phy_calibrate(dev);
3320 err = b43legacy_chip_init(dev);
3321 if (err)
3322 goto err_kfree_tssitbl;
3323 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3324 B43legacy_SHM_SH_WLCOREREV,
3325 dev->dev->id.revision);
3326 hf = b43legacy_hf_read(dev);
3327 if (phy->type == B43legacy_PHYTYPE_G) {
3328 hf |= B43legacy_HF_SYMW;
3329 if (phy->rev == 1)
3330 hf |= B43legacy_HF_GDCW;
3331 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
3332 hf |= B43legacy_HF_OFDMPABOOST;
3333 } else if (phy->type == B43legacy_PHYTYPE_B) {
3334 hf |= B43legacy_HF_SYMW;
3335 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3336 hf &= ~B43legacy_HF_GDCW;
3337 }
3338 b43legacy_hf_write(dev, hf);
3339
3340 b43legacy_set_retry_limits(dev,
3341 B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
3342 B43legacy_DEFAULT_LONG_RETRY_LIMIT);
3343
3344 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3345 0x0044, 3);
3346 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3347 0x0046, 2);
3348
3349 /* Disable sending probe responses from firmware.
3350 * Setting the MaxTime to one usec will always trigger
3351 * a timeout, so we never send any probe resp.
3352 * A timeout of zero is infinite. */
3353 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3354 B43legacy_SHM_SH_PRMAXTIME, 1);
3355
3356 b43legacy_rate_memory_init(dev);
3357
3358 /* Minimum Contention Window */
3359 if (phy->type == B43legacy_PHYTYPE_B)
3360 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3361 0x0003, 31);
3362 else
3363 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3364 0x0003, 15);
3365 /* Maximum Contention Window */
3366 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3367 0x0004, 1023);
3368
3369 do {
3370 if (b43legacy_using_pio(dev))
3371 err = b43legacy_pio_init(dev);
3372 else {
3373 err = b43legacy_dma_init(dev);
3374 if (!err)
3375 b43legacy_qos_init(dev);
3376 }
3377 } while (err == -EAGAIN);
3378 if (err)
3379 goto err_chip_exit;
3380
3381 b43legacy_set_synth_pu_delay(dev, 1);
3382
3383 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3384 b43legacy_upload_card_macaddress(dev);
3385 b43legacy_security_init(dev);
3386 b43legacy_rng_init(wl);
3387
3388 ieee80211_wake_queues(dev->wl->hw);
3389 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
3390
3391 b43legacy_leds_init(dev);
3392out:
3393 return err;
3394
3395err_chip_exit:
3396 b43legacy_chip_exit(dev);
3397err_kfree_tssitbl:
3398 if (phy->dyn_tssi_tbl)
3399 kfree(phy->tssi2dbm);
3400err_kfree_lo_control:
3401 kfree(phy->lo_control);
3402 phy->lo_control = NULL;
3403 ssb_bus_may_powerdown(bus);
3404 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3405 return err;
3406}
3407
3408static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
3409 struct ieee80211_vif *vif)
3410{
3411 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3412 struct b43legacy_wldev *dev;
3413 unsigned long flags;
3414 int err = -EOPNOTSUPP;
3415
3416 /* TODO: allow WDS/AP devices to coexist */
3417
3418 if (vif->type != NL80211_IFTYPE_AP &&
3419 vif->type != NL80211_IFTYPE_STATION &&
3420 vif->type != NL80211_IFTYPE_WDS &&
3421 vif->type != NL80211_IFTYPE_ADHOC)
3422 return -EOPNOTSUPP;
3423
3424 mutex_lock(&wl->mutex);
3425 if (wl->operating)
3426 goto out_mutex_unlock;
3427
3428 b43legacydbg(wl, "Adding Interface type %d\n", vif->type);
3429
3430 dev = wl->current_dev;
3431 wl->operating = true;
3432 wl->vif = vif;
3433 wl->if_type = vif->type;
3434 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
3435
3436 spin_lock_irqsave(&wl->irq_lock, flags);
3437 b43legacy_adjust_opmode(dev);
3438 b43legacy_set_pretbtt(dev);
3439 b43legacy_set_synth_pu_delay(dev, 0);
3440 b43legacy_upload_card_macaddress(dev);
3441 spin_unlock_irqrestore(&wl->irq_lock, flags);
3442
3443 err = 0;
3444 out_mutex_unlock:
3445 mutex_unlock(&wl->mutex);
3446
3447 return err;
3448}
3449
3450static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
3451 struct ieee80211_vif *vif)
3452{
3453 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3454 struct b43legacy_wldev *dev = wl->current_dev;
3455 unsigned long flags;
3456
3457 b43legacydbg(wl, "Removing Interface type %d\n", vif->type);
3458
3459 mutex_lock(&wl->mutex);
3460
3461 B43legacy_WARN_ON(!wl->operating);
3462 B43legacy_WARN_ON(wl->vif != vif);
3463 wl->vif = NULL;
3464
3465 wl->operating = false;
3466
3467 spin_lock_irqsave(&wl->irq_lock, flags);
3468 b43legacy_adjust_opmode(dev);
3469 eth_zero_addr(wl->mac_addr);
3470 b43legacy_upload_card_macaddress(dev);
3471 spin_unlock_irqrestore(&wl->irq_lock, flags);
3472
3473 mutex_unlock(&wl->mutex);
3474}
3475
3476static int b43legacy_op_start(struct ieee80211_hw *hw)
3477{
3478 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3479 struct b43legacy_wldev *dev = wl->current_dev;
3480 int did_init = 0;
3481 int err = 0;
3482
3483 /* Kill all old instance specific information to make sure
3484 * the card won't use it in the short timeframe between start
3485 * and mac80211 reconfiguring it. */
3486 eth_zero_addr(wl->bssid);
3487 eth_zero_addr(wl->mac_addr);
3488 wl->filter_flags = 0;
3489 wl->beacon0_uploaded = false;
3490 wl->beacon1_uploaded = false;
3491 wl->beacon_templates_virgin = true;
3492 wl->radio_enabled = true;
3493
3494 mutex_lock(&wl->mutex);
3495
3496 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
3497 err = b43legacy_wireless_core_init(dev);
3498 if (err)
3499 goto out_mutex_unlock;
3500 did_init = 1;
3501 }
3502
3503 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
3504 err = b43legacy_wireless_core_start(dev);
3505 if (err) {
3506 if (did_init)
3507 b43legacy_wireless_core_exit(dev);
3508 goto out_mutex_unlock;
3509 }
3510 }
3511
3512 wiphy_rfkill_start_polling(hw->wiphy);
3513
3514out_mutex_unlock:
3515 mutex_unlock(&wl->mutex);
3516
3517 return err;
3518}
3519
3520static void b43legacy_op_stop(struct ieee80211_hw *hw)
3521{
3522 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3523 struct b43legacy_wldev *dev = wl->current_dev;
3524
3525 cancel_work_sync(&(wl->beacon_update_trigger));
3526
3527 mutex_lock(&wl->mutex);
3528 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
3529 b43legacy_wireless_core_stop(dev);
3530 b43legacy_wireless_core_exit(dev);
3531 wl->radio_enabled = false;
3532 mutex_unlock(&wl->mutex);
3533}
3534
3535static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
3536 struct ieee80211_sta *sta, bool set)
3537{
3538 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3539 unsigned long flags;
3540
3541 spin_lock_irqsave(&wl->irq_lock, flags);
3542 b43legacy_update_templates(wl);
3543 spin_unlock_irqrestore(&wl->irq_lock, flags);
3544
3545 return 0;
3546}
3547
3548static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
3549 struct survey_info *survey)
3550{
3551 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3552 struct b43legacy_wldev *dev = wl->current_dev;
3553 struct ieee80211_conf *conf = &hw->conf;
3554
3555 if (idx != 0)
3556 return -ENOENT;
3557
3558 survey->channel = conf->chandef.chan;
3559 survey->filled = SURVEY_INFO_NOISE_DBM;
3560 survey->noise = dev->stats.link_noise;
3561
3562 return 0;
3563}
3564
3565static const struct ieee80211_ops b43legacy_hw_ops = {
3566 .tx = b43legacy_op_tx,
3567 .conf_tx = b43legacy_op_conf_tx,
3568 .add_interface = b43legacy_op_add_interface,
3569 .remove_interface = b43legacy_op_remove_interface,
3570 .config = b43legacy_op_dev_config,
3571 .bss_info_changed = b43legacy_op_bss_info_changed,
3572 .configure_filter = b43legacy_op_configure_filter,
3573 .get_stats = b43legacy_op_get_stats,
3574 .start = b43legacy_op_start,
3575 .stop = b43legacy_op_stop,
3576 .set_tim = b43legacy_op_beacon_set_tim,
3577 .get_survey = b43legacy_op_get_survey,
3578 .rfkill_poll = b43legacy_rfkill_poll,
3579};
3580
3581/* Hard-reset the chip. Do not call this directly.
3582 * Use b43legacy_controller_restart()
3583 */
3584static void b43legacy_chip_reset(struct work_struct *work)
3585{
3586 struct b43legacy_wldev *dev =
3587 container_of(work, struct b43legacy_wldev, restart_work);
3588 struct b43legacy_wl *wl = dev->wl;
3589 int err = 0;
3590 int prev_status;
3591
3592 mutex_lock(&wl->mutex);
3593
3594 prev_status = b43legacy_status(dev);
3595 /* Bring the device down... */
3596 if (prev_status >= B43legacy_STAT_STARTED)
3597 b43legacy_wireless_core_stop(dev);
3598 if (prev_status >= B43legacy_STAT_INITIALIZED)
3599 b43legacy_wireless_core_exit(dev);
3600
3601 /* ...and up again. */
3602 if (prev_status >= B43legacy_STAT_INITIALIZED) {
3603 err = b43legacy_wireless_core_init(dev);
3604 if (err)
3605 goto out;
3606 }
3607 if (prev_status >= B43legacy_STAT_STARTED) {
3608 err = b43legacy_wireless_core_start(dev);
3609 if (err) {
3610 b43legacy_wireless_core_exit(dev);
3611 goto out;
3612 }
3613 }
3614out:
3615 if (err)
3616 wl->current_dev = NULL; /* Failed to init the dev. */
3617 mutex_unlock(&wl->mutex);
3618 if (err)
3619 b43legacyerr(wl, "Controller restart FAILED\n");
3620 else
3621 b43legacyinfo(wl, "Controller restarted\n");
3622}
3623
3624static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
3625 int have_bphy,
3626 int have_gphy)
3627{
3628 struct ieee80211_hw *hw = dev->wl->hw;
3629 struct b43legacy_phy *phy = &dev->phy;
3630
3631 phy->possible_phymodes = 0;
3632 if (have_bphy) {
3633 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3634 &b43legacy_band_2GHz_BPHY;
3635 phy->possible_phymodes |= B43legacy_PHYMODE_B;
3636 }
3637
3638 if (have_gphy) {
3639 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3640 &b43legacy_band_2GHz_GPHY;
3641 phy->possible_phymodes |= B43legacy_PHYMODE_G;
3642 }
3643
3644 return 0;
3645}
3646
3647static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
3648{
3649 /* We release firmware that late to not be required to re-request
3650 * is all the time when we reinit the core. */
3651 b43legacy_release_firmware(dev);
3652}
3653
3654static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
3655{
3656 struct b43legacy_wl *wl = dev->wl;
3657 struct ssb_bus *bus = dev->dev->bus;
3658 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
3659 int err;
3660 int have_bphy = 0;
3661 int have_gphy = 0;
3662 u32 tmp;
3663
3664 /* Do NOT do any device initialization here.
3665 * Do it in wireless_core_init() instead.
3666 * This function is for gathering basic information about the HW, only.
3667 * Also some structs may be set up here. But most likely you want to
3668 * have that in core_init(), too.
3669 */
3670
3671 err = ssb_bus_powerup(bus, 0);
3672 if (err) {
3673 b43legacyerr(wl, "Bus powerup failed\n");
3674 goto out;
3675 }
3676 /* Get the PHY type. */
3677 if (dev->dev->id.revision >= 5) {
3678 u32 tmshigh;
3679
3680 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3681 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
3682 if (!have_gphy)
3683 have_bphy = 1;
3684 } else if (dev->dev->id.revision == 4)
3685 have_gphy = 1;
3686 else
3687 have_bphy = 1;
3688
3689 dev->phy.gmode = (have_gphy || have_bphy);
3690 dev->phy.radio_on = true;
3691 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3692 b43legacy_wireless_core_reset(dev, tmp);
3693
3694 err = b43legacy_phy_versioning(dev);
3695 if (err)
3696 goto err_powerdown;
3697 /* Check if this device supports multiband. */
3698 if (!pdev ||
3699 (pdev->device != 0x4312 &&
3700 pdev->device != 0x4319 &&
3701 pdev->device != 0x4324)) {
3702 /* No multiband support. */
3703 have_bphy = 0;
3704 have_gphy = 0;
3705 switch (dev->phy.type) {
3706 case B43legacy_PHYTYPE_B:
3707 have_bphy = 1;
3708 break;
3709 case B43legacy_PHYTYPE_G:
3710 have_gphy = 1;
3711 break;
3712 default:
3713 B43legacy_BUG_ON(1);
3714 }
3715 }
3716 dev->phy.gmode = (have_gphy || have_bphy);
3717 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3718 b43legacy_wireless_core_reset(dev, tmp);
3719
3720 err = b43legacy_validate_chipaccess(dev);
3721 if (err)
3722 goto err_powerdown;
3723 err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
3724 if (err)
3725 goto err_powerdown;
3726
3727 /* Now set some default "current_dev" */
3728 if (!wl->current_dev)
3729 wl->current_dev = dev;
3730 INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
3731
3732 b43legacy_radio_turn_off(dev, 1);
3733 b43legacy_switch_analog(dev, 0);
3734 ssb_device_disable(dev->dev, 0);
3735 ssb_bus_may_powerdown(bus);
3736
3737out:
3738 return err;
3739
3740err_powerdown:
3741 ssb_bus_may_powerdown(bus);
3742 return err;
3743}
3744
3745static void b43legacy_one_core_detach(struct ssb_device *dev)
3746{
3747 struct b43legacy_wldev *wldev;
3748 struct b43legacy_wl *wl;
3749
3750 /* Do not cancel ieee80211-workqueue based work here.
3751 * See comment in b43legacy_remove(). */
3752
3753 wldev = ssb_get_drvdata(dev);
3754 wl = wldev->wl;
3755 b43legacy_debugfs_remove_device(wldev);
3756 b43legacy_wireless_core_detach(wldev);
3757 list_del(&wldev->list);
3758 wl->nr_devs--;
3759 ssb_set_drvdata(dev, NULL);
3760 kfree(wldev);
3761}
3762
3763static int b43legacy_one_core_attach(struct ssb_device *dev,
3764 struct b43legacy_wl *wl)
3765{
3766 struct b43legacy_wldev *wldev;
3767 int err = -ENOMEM;
3768
3769 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3770 if (!wldev)
3771 goto out;
3772
3773 wldev->dev = dev;
3774 wldev->wl = wl;
3775 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
3776 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3777 tasklet_init(&wldev->isr_tasklet,
3778 (void (*)(unsigned long))b43legacy_interrupt_tasklet,
3779 (unsigned long)wldev);
3780 if (modparam_pio)
3781 wldev->__using_pio = true;
3782 INIT_LIST_HEAD(&wldev->list);
3783
3784 err = b43legacy_wireless_core_attach(wldev);
3785 if (err)
3786 goto err_kfree_wldev;
3787
3788 list_add(&wldev->list, &wl->devlist);
3789 wl->nr_devs++;
3790 ssb_set_drvdata(dev, wldev);
3791 b43legacy_debugfs_add_device(wldev);
3792out:
3793 return err;
3794
3795err_kfree_wldev:
3796 kfree(wldev);
3797 return err;
3798}
3799
3800static void b43legacy_sprom_fixup(struct ssb_bus *bus)
3801{
3802 /* boardflags workarounds */
3803 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3804 bus->boardinfo.type == 0x4E &&
3805 bus->sprom.board_rev > 0x40)
3806 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
3807}
3808
3809static void b43legacy_wireless_exit(struct ssb_device *dev,
3810 struct b43legacy_wl *wl)
3811{
3812 struct ieee80211_hw *hw = wl->hw;
3813
3814 ssb_set_devtypedata(dev, NULL);
3815 ieee80211_free_hw(hw);
3816}
3817
3818static int b43legacy_wireless_init(struct ssb_device *dev)
3819{
3820 struct ssb_sprom *sprom = &dev->bus->sprom;
3821 struct ieee80211_hw *hw;
3822 struct b43legacy_wl *wl;
3823 int err = -ENOMEM;
3824 int queue_num;
3825
3826 b43legacy_sprom_fixup(dev->bus);
3827
3828 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
3829 if (!hw) {
3830 b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
3831 goto out;
3832 }
3833
3834 /* fill hw info */
3835 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
3836 ieee80211_hw_set(hw, SIGNAL_DBM);
3837
3838 hw->wiphy->interface_modes =
3839 BIT(NL80211_IFTYPE_AP) |
3840 BIT(NL80211_IFTYPE_STATION) |
3841 BIT(NL80211_IFTYPE_WDS) |
3842 BIT(NL80211_IFTYPE_ADHOC);
3843 hw->queues = 1; /* FIXME: hardware has more queues */
3844 hw->max_rates = 2;
3845 SET_IEEE80211_DEV(hw, dev->dev);
3846 if (is_valid_ether_addr(sprom->et1mac))
3847 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3848 else
3849 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3850
3851 /* Get and initialize struct b43legacy_wl */
3852 wl = hw_to_b43legacy_wl(hw);
3853 memset(wl, 0, sizeof(*wl));
3854 wl->hw = hw;
3855 spin_lock_init(&wl->irq_lock);
3856 spin_lock_init(&wl->leds_lock);
3857 mutex_init(&wl->mutex);
3858 INIT_LIST_HEAD(&wl->devlist);
3859 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
3860 INIT_WORK(&wl->tx_work, b43legacy_tx_work);
3861
3862 /* Initialize queues and flags. */
3863 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
3864 skb_queue_head_init(&wl->tx_queue[queue_num]);
3865 wl->tx_queue_stopped[queue_num] = 0;
3866 }
3867
3868 ssb_set_devtypedata(dev, wl);
3869 b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n",
3870 dev->bus->chip_id, dev->id.revision);
3871 err = 0;
3872out:
3873 return err;
3874}
3875
3876static int b43legacy_probe(struct ssb_device *dev,
3877 const struct ssb_device_id *id)
3878{
3879 struct b43legacy_wl *wl;
3880 int err;
3881 int first = 0;
3882
3883 wl = ssb_get_devtypedata(dev);
3884 if (!wl) {
3885 /* Probing the first core - setup common struct b43legacy_wl */
3886 first = 1;
3887 err = b43legacy_wireless_init(dev);
3888 if (err)
3889 goto out;
3890 wl = ssb_get_devtypedata(dev);
3891 B43legacy_WARN_ON(!wl);
3892 }
3893 err = b43legacy_one_core_attach(dev, wl);
3894 if (err)
3895 goto err_wireless_exit;
3896
3897 /* setup and start work to load firmware */
3898 INIT_WORK(&wl->firmware_load, b43legacy_request_firmware);
3899 schedule_work(&wl->firmware_load);
3900
3901out:
3902 return err;
3903
3904err_wireless_exit:
3905 if (first)
3906 b43legacy_wireless_exit(dev, wl);
3907 return err;
3908}
3909
3910static void b43legacy_remove(struct ssb_device *dev)
3911{
3912 struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
3913 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3914
3915 /* We must cancel any work here before unregistering from ieee80211,
3916 * as the ieee80211 unreg will destroy the workqueue. */
3917 cancel_work_sync(&wldev->restart_work);
3918 cancel_work_sync(&wl->firmware_load);
3919 complete(&wldev->fw_load_complete);
3920
3921 B43legacy_WARN_ON(!wl);
3922 if (!wldev->fw.ucode)
3923 return; /* NULL if fw never loaded */
3924 if (wl->current_dev == wldev)
3925 ieee80211_unregister_hw(wl->hw);
3926
3927 b43legacy_one_core_detach(dev);
3928
3929 if (list_empty(&wl->devlist))
3930 /* Last core on the chip unregistered.
3931 * We can destroy common struct b43legacy_wl.
3932 */
3933 b43legacy_wireless_exit(dev, wl);
3934}
3935
3936/* Perform a hardware reset. This can be called from any context. */
3937void b43legacy_controller_restart(struct b43legacy_wldev *dev,
3938 const char *reason)
3939{
3940 /* Must avoid requeueing, if we are in shutdown. */
3941 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
3942 return;
3943 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
3944 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
3945}
3946
3947#ifdef CONFIG_PM
3948
3949static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
3950{
3951 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3952 struct b43legacy_wl *wl = wldev->wl;
3953
3954 b43legacydbg(wl, "Suspending...\n");
3955
3956 mutex_lock(&wl->mutex);
3957 wldev->suspend_init_status = b43legacy_status(wldev);
3958 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
3959 b43legacy_wireless_core_stop(wldev);
3960 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
3961 b43legacy_wireless_core_exit(wldev);
3962 mutex_unlock(&wl->mutex);
3963
3964 b43legacydbg(wl, "Device suspended.\n");
3965
3966 return 0;
3967}
3968
3969static int b43legacy_resume(struct ssb_device *dev)
3970{
3971 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3972 struct b43legacy_wl *wl = wldev->wl;
3973 int err = 0;
3974
3975 b43legacydbg(wl, "Resuming...\n");
3976
3977 mutex_lock(&wl->mutex);
3978 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
3979 err = b43legacy_wireless_core_init(wldev);
3980 if (err) {
3981 b43legacyerr(wl, "Resume failed at core init\n");
3982 goto out;
3983 }
3984 }
3985 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
3986 err = b43legacy_wireless_core_start(wldev);
3987 if (err) {
3988 b43legacy_wireless_core_exit(wldev);
3989 b43legacyerr(wl, "Resume failed at core start\n");
3990 goto out;
3991 }
3992 }
3993
3994 b43legacydbg(wl, "Device resumed.\n");
3995out:
3996 mutex_unlock(&wl->mutex);
3997 return err;
3998}
3999
4000#else /* CONFIG_PM */
4001# define b43legacy_suspend NULL
4002# define b43legacy_resume NULL
4003#endif /* CONFIG_PM */
4004
4005static struct ssb_driver b43legacy_ssb_driver = {
4006 .name = KBUILD_MODNAME,
4007 .id_table = b43legacy_ssb_tbl,
4008 .probe = b43legacy_probe,
4009 .remove = b43legacy_remove,
4010 .suspend = b43legacy_suspend,
4011 .resume = b43legacy_resume,
4012};
4013
4014static void b43legacy_print_driverinfo(void)
4015{
4016 const char *feat_pci = "", *feat_leds = "",
4017 *feat_pio = "", *feat_dma = "";
4018
4019#ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
4020 feat_pci = "P";
4021#endif
4022#ifdef CONFIG_B43LEGACY_LEDS
4023 feat_leds = "L";
4024#endif
4025#ifdef CONFIG_B43LEGACY_PIO
4026 feat_pio = "I";
4027#endif
4028#ifdef CONFIG_B43LEGACY_DMA
4029 feat_dma = "D";
4030#endif
4031 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
4032 "[ Features: %s%s%s%s ]\n",
4033 feat_pci, feat_leds, feat_pio, feat_dma);
4034}
4035
4036static int __init b43legacy_init(void)
4037{
4038 int err;
4039
4040 b43legacy_debugfs_init();
4041
4042 err = ssb_driver_register(&b43legacy_ssb_driver);
4043 if (err)
4044 goto err_dfs_exit;
4045
4046 b43legacy_print_driverinfo();
4047
4048 return err;
4049
4050err_dfs_exit:
4051 b43legacy_debugfs_exit();
4052 return err;
4053}
4054
4055static void __exit b43legacy_exit(void)
4056{
4057 ssb_driver_unregister(&b43legacy_ssb_driver);
4058 b43legacy_debugfs_exit();
4059}
4060
4061module_init(b43legacy_init)
4062module_exit(b43legacy_exit)