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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 SSB_DEVTABLE_END
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((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((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://linuxwireless.org/en/users/"
1512 "Drivers/b43#devicefirmware "
1513 "and download the correct firmware (version 3).\n");
1514}
1515
1516static int do_request_fw(struct b43legacy_wldev *dev,
1517 const char *name,
1518 const struct firmware **fw)
1519{
1520 char path[sizeof(modparam_fwpostfix) + 32];
1521 struct b43legacy_fw_header *hdr;
1522 u32 size;
1523 int err;
1524
1525 if (!name)
1526 return 0;
1527
1528 snprintf(path, ARRAY_SIZE(path),
1529 "b43legacy%s/%s.fw",
1530 modparam_fwpostfix, name);
1531 err = request_firmware(fw, path, dev->dev->dev);
1532 if (err) {
1533 b43legacyerr(dev->wl, "Firmware file \"%s\" not found "
1534 "or load failed.\n", path);
1535 return err;
1536 }
1537 if ((*fw)->size < sizeof(struct b43legacy_fw_header))
1538 goto err_format;
1539 hdr = (struct b43legacy_fw_header *)((*fw)->data);
1540 switch (hdr->type) {
1541 case B43legacy_FW_TYPE_UCODE:
1542 case B43legacy_FW_TYPE_PCM:
1543 size = be32_to_cpu(hdr->size);
1544 if (size != (*fw)->size - sizeof(struct b43legacy_fw_header))
1545 goto err_format;
1546 /* fallthrough */
1547 case B43legacy_FW_TYPE_IV:
1548 if (hdr->ver != 1)
1549 goto err_format;
1550 break;
1551 default:
1552 goto err_format;
1553 }
1554
1555 return err;
1556
1557err_format:
1558 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path);
1559 return -EPROTO;
1560}
1561
1562static int b43legacy_one_core_attach(struct ssb_device *dev,
1563 struct b43legacy_wl *wl);
1564static void b43legacy_one_core_detach(struct ssb_device *dev);
1565
1566static void b43legacy_request_firmware(struct work_struct *work)
1567{
1568 struct b43legacy_wl *wl = container_of(work,
1569 struct b43legacy_wl, firmware_load);
1570 struct b43legacy_wldev *dev = wl->current_dev;
1571 struct b43legacy_firmware *fw = &dev->fw;
1572 const u8 rev = dev->dev->id.revision;
1573 const char *filename;
1574 int err;
1575
1576 if (!fw->ucode) {
1577 if (rev == 2)
1578 filename = "ucode2";
1579 else if (rev == 4)
1580 filename = "ucode4";
1581 else
1582 filename = "ucode5";
1583 err = do_request_fw(dev, filename, &fw->ucode);
1584 if (err)
1585 goto err_load;
1586 }
1587 if (!fw->pcm) {
1588 if (rev < 5)
1589 filename = "pcm4";
1590 else
1591 filename = "pcm5";
1592 err = do_request_fw(dev, filename, &fw->pcm);
1593 if (err)
1594 goto err_load;
1595 }
1596 if (!fw->initvals) {
1597 switch (dev->phy.type) {
1598 case B43legacy_PHYTYPE_B:
1599 case B43legacy_PHYTYPE_G:
1600 if ((rev >= 5) && (rev <= 10))
1601 filename = "b0g0initvals5";
1602 else if (rev == 2 || rev == 4)
1603 filename = "b0g0initvals2";
1604 else
1605 goto err_no_initvals;
1606 break;
1607 default:
1608 goto err_no_initvals;
1609 }
1610 err = do_request_fw(dev, filename, &fw->initvals);
1611 if (err)
1612 goto err_load;
1613 }
1614 if (!fw->initvals_band) {
1615 switch (dev->phy.type) {
1616 case B43legacy_PHYTYPE_B:
1617 case B43legacy_PHYTYPE_G:
1618 if ((rev >= 5) && (rev <= 10))
1619 filename = "b0g0bsinitvals5";
1620 else if (rev >= 11)
1621 filename = NULL;
1622 else if (rev == 2 || rev == 4)
1623 filename = NULL;
1624 else
1625 goto err_no_initvals;
1626 break;
1627 default:
1628 goto err_no_initvals;
1629 }
1630 err = do_request_fw(dev, filename, &fw->initvals_band);
1631 if (err)
1632 goto err_load;
1633 }
1634 err = ieee80211_register_hw(wl->hw);
1635 if (err)
1636 goto err_one_core_detach;
1637 return;
1638
1639err_one_core_detach:
1640 b43legacy_one_core_detach(dev->dev);
1641 goto error;
1642
1643err_load:
1644 b43legacy_print_fw_helptext(dev->wl);
1645 goto error;
1646
1647err_no_initvals:
1648 err = -ENODEV;
1649 b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, "
1650 "core rev %u\n", dev->phy.type, rev);
1651 goto error;
1652
1653error:
1654 b43legacy_release_firmware(dev);
1655 return;
1656}
1657
1658static int b43legacy_upload_microcode(struct b43legacy_wldev *dev)
1659{
1660 struct wiphy *wiphy = dev->wl->hw->wiphy;
1661 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1662 const __be32 *data;
1663 unsigned int i;
1664 unsigned int len;
1665 u16 fwrev;
1666 u16 fwpatch;
1667 u16 fwdate;
1668 u16 fwtime;
1669 u32 tmp, macctl;
1670 int err = 0;
1671
1672 /* Jump the microcode PSM to offset 0 */
1673 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1674 B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN);
1675 macctl |= B43legacy_MACCTL_PSM_JMP0;
1676 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1677 /* Zero out all microcode PSM registers and shared memory. */
1678 for (i = 0; i < 64; i++)
1679 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0);
1680 for (i = 0; i < 4096; i += 2)
1681 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0);
1682
1683 /* Upload Microcode. */
1684 data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1685 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1686 b43legacy_shm_control_word(dev,
1687 B43legacy_SHM_UCODE |
1688 B43legacy_SHM_AUTOINC_W,
1689 0x0000);
1690 for (i = 0; i < len; i++) {
1691 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1692 be32_to_cpu(data[i]));
1693 udelay(10);
1694 }
1695
1696 if (dev->fw.pcm) {
1697 /* Upload PCM data. */
1698 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1699 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1700 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA);
1701 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000);
1702 /* No need for autoinc bit in SHM_HW */
1703 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB);
1704 for (i = 0; i < len; i++) {
1705 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA,
1706 be32_to_cpu(data[i]));
1707 udelay(10);
1708 }
1709 }
1710
1711 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1712 B43legacy_IRQ_ALL);
1713
1714 /* Start the microcode PSM */
1715 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1716 macctl &= ~B43legacy_MACCTL_PSM_JMP0;
1717 macctl |= B43legacy_MACCTL_PSM_RUN;
1718 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1719
1720 /* Wait for the microcode to load and respond */
1721 i = 0;
1722 while (1) {
1723 tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1724 if (tmp == B43legacy_IRQ_MAC_SUSPENDED)
1725 break;
1726 i++;
1727 if (i >= B43legacy_IRQWAIT_MAX_RETRIES) {
1728 b43legacyerr(dev->wl, "Microcode not responding\n");
1729 b43legacy_print_fw_helptext(dev->wl);
1730 err = -ENODEV;
1731 goto error;
1732 }
1733 msleep_interruptible(50);
1734 if (signal_pending(current)) {
1735 err = -EINTR;
1736 goto error;
1737 }
1738 }
1739 /* dummy read follows */
1740 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1741
1742 /* Get and check the revisions. */
1743 fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1744 B43legacy_SHM_SH_UCODEREV);
1745 fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1746 B43legacy_SHM_SH_UCODEPATCH);
1747 fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1748 B43legacy_SHM_SH_UCODEDATE);
1749 fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
1750 B43legacy_SHM_SH_UCODETIME);
1751
1752 if (fwrev > 0x128) {
1753 b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE."
1754 " Only firmware from binary drivers version 3.x"
1755 " is supported. You must change your firmware"
1756 " files.\n");
1757 b43legacy_print_fw_helptext(dev->wl);
1758 err = -EOPNOTSUPP;
1759 goto error;
1760 }
1761 b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u "
1762 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch,
1763 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1764 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F,
1765 fwtime & 0x1F);
1766
1767 dev->fw.rev = fwrev;
1768 dev->fw.patch = fwpatch;
1769
1770 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
1771 dev->fw.rev, dev->fw.patch);
1772 wiphy->hw_version = dev->dev->id.coreid;
1773
1774 return 0;
1775
1776error:
1777 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1778 macctl &= ~B43legacy_MACCTL_PSM_RUN;
1779 macctl |= B43legacy_MACCTL_PSM_JMP0;
1780 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
1781
1782 return err;
1783}
1784
1785static int b43legacy_write_initvals(struct b43legacy_wldev *dev,
1786 const struct b43legacy_iv *ivals,
1787 size_t count,
1788 size_t array_size)
1789{
1790 const struct b43legacy_iv *iv;
1791 u16 offset;
1792 size_t i;
1793 bool bit32;
1794
1795 BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6);
1796 iv = ivals;
1797 for (i = 0; i < count; i++) {
1798 if (array_size < sizeof(iv->offset_size))
1799 goto err_format;
1800 array_size -= sizeof(iv->offset_size);
1801 offset = be16_to_cpu(iv->offset_size);
1802 bit32 = !!(offset & B43legacy_IV_32BIT);
1803 offset &= B43legacy_IV_OFFSET_MASK;
1804 if (offset >= 0x1000)
1805 goto err_format;
1806 if (bit32) {
1807 u32 value;
1808
1809 if (array_size < sizeof(iv->data.d32))
1810 goto err_format;
1811 array_size -= sizeof(iv->data.d32);
1812
1813 value = get_unaligned_be32(&iv->data.d32);
1814 b43legacy_write32(dev, offset, value);
1815
1816 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1817 sizeof(__be16) +
1818 sizeof(__be32));
1819 } else {
1820 u16 value;
1821
1822 if (array_size < sizeof(iv->data.d16))
1823 goto err_format;
1824 array_size -= sizeof(iv->data.d16);
1825
1826 value = be16_to_cpu(iv->data.d16);
1827 b43legacy_write16(dev, offset, value);
1828
1829 iv = (const struct b43legacy_iv *)((const uint8_t *)iv +
1830 sizeof(__be16) +
1831 sizeof(__be16));
1832 }
1833 }
1834 if (array_size)
1835 goto err_format;
1836
1837 return 0;
1838
1839err_format:
1840 b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n");
1841 b43legacy_print_fw_helptext(dev->wl);
1842
1843 return -EPROTO;
1844}
1845
1846static int b43legacy_upload_initvals(struct b43legacy_wldev *dev)
1847{
1848 const size_t hdr_len = sizeof(struct b43legacy_fw_header);
1849 const struct b43legacy_fw_header *hdr;
1850 struct b43legacy_firmware *fw = &dev->fw;
1851 const struct b43legacy_iv *ivals;
1852 size_t count;
1853 int err;
1854
1855 hdr = (const struct b43legacy_fw_header *)(fw->initvals->data);
1856 ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len);
1857 count = be32_to_cpu(hdr->size);
1858 err = b43legacy_write_initvals(dev, ivals, count,
1859 fw->initvals->size - hdr_len);
1860 if (err)
1861 goto out;
1862 if (fw->initvals_band) {
1863 hdr = (const struct b43legacy_fw_header *)
1864 (fw->initvals_band->data);
1865 ivals = (const struct b43legacy_iv *)(fw->initvals_band->data
1866 + hdr_len);
1867 count = be32_to_cpu(hdr->size);
1868 err = b43legacy_write_initvals(dev, ivals, count,
1869 fw->initvals_band->size - hdr_len);
1870 if (err)
1871 goto out;
1872 }
1873out:
1874
1875 return err;
1876}
1877
1878/* Initialize the GPIOs
1879 * http://bcm-specs.sipsolutions.net/GPIO
1880 */
1881static int b43legacy_gpio_init(struct b43legacy_wldev *dev)
1882{
1883 struct ssb_bus *bus = dev->dev->bus;
1884 struct ssb_device *gpiodev, *pcidev = NULL;
1885 u32 mask;
1886 u32 set;
1887
1888 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1889 b43legacy_read32(dev,
1890 B43legacy_MMIO_MACCTL)
1891 & 0xFFFF3FFF);
1892
1893 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1894 b43legacy_read16(dev,
1895 B43legacy_MMIO_GPIO_MASK)
1896 | 0x000F);
1897
1898 mask = 0x0000001F;
1899 set = 0x0000000F;
1900 if (dev->dev->bus->chip_id == 0x4301) {
1901 mask |= 0x0060;
1902 set |= 0x0060;
1903 }
1904 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) {
1905 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK,
1906 b43legacy_read16(dev,
1907 B43legacy_MMIO_GPIO_MASK)
1908 | 0x0200);
1909 mask |= 0x0200;
1910 set |= 0x0200;
1911 }
1912 if (dev->dev->id.revision >= 2)
1913 mask |= 0x0010; /* FIXME: This is redundant. */
1914
1915#ifdef CONFIG_SSB_DRIVER_PCICORE
1916 pcidev = bus->pcicore.dev;
1917#endif
1918 gpiodev = bus->chipco.dev ? : pcidev;
1919 if (!gpiodev)
1920 return 0;
1921 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL,
1922 (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL)
1923 & mask) | set);
1924
1925 return 0;
1926}
1927
1928/* Turn off all GPIO stuff. Call this on module unload, for example. */
1929static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev)
1930{
1931 struct ssb_bus *bus = dev->dev->bus;
1932 struct ssb_device *gpiodev, *pcidev = NULL;
1933
1934#ifdef CONFIG_SSB_DRIVER_PCICORE
1935 pcidev = bus->pcicore.dev;
1936#endif
1937 gpiodev = bus->chipco.dev ? : pcidev;
1938 if (!gpiodev)
1939 return;
1940 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0);
1941}
1942
1943/* http://bcm-specs.sipsolutions.net/EnableMac */
1944void b43legacy_mac_enable(struct b43legacy_wldev *dev)
1945{
1946 dev->mac_suspended--;
1947 B43legacy_WARN_ON(dev->mac_suspended < 0);
1948 B43legacy_WARN_ON(irqs_disabled());
1949 if (dev->mac_suspended == 0) {
1950 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1951 b43legacy_read32(dev,
1952 B43legacy_MMIO_MACCTL)
1953 | B43legacy_MACCTL_ENABLED);
1954 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON,
1955 B43legacy_IRQ_MAC_SUSPENDED);
1956 /* the next two are dummy reads */
1957 b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
1958 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1959 b43legacy_power_saving_ctl_bits(dev, -1, -1);
1960
1961 /* Re-enable IRQs. */
1962 spin_lock_irq(&dev->wl->irq_lock);
1963 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
1964 dev->irq_mask);
1965 spin_unlock_irq(&dev->wl->irq_lock);
1966 }
1967}
1968
1969/* http://bcm-specs.sipsolutions.net/SuspendMAC */
1970void b43legacy_mac_suspend(struct b43legacy_wldev *dev)
1971{
1972 int i;
1973 u32 tmp;
1974
1975 might_sleep();
1976 B43legacy_WARN_ON(irqs_disabled());
1977 B43legacy_WARN_ON(dev->mac_suspended < 0);
1978
1979 if (dev->mac_suspended == 0) {
1980 /* Mask IRQs before suspending MAC. Otherwise
1981 * the MAC stays busy and won't suspend. */
1982 spin_lock_irq(&dev->wl->irq_lock);
1983 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
1984 spin_unlock_irq(&dev->wl->irq_lock);
1985 b43legacy_synchronize_irq(dev);
1986
1987 b43legacy_power_saving_ctl_bits(dev, -1, 1);
1988 b43legacy_write32(dev, B43legacy_MMIO_MACCTL,
1989 b43legacy_read32(dev,
1990 B43legacy_MMIO_MACCTL)
1991 & ~B43legacy_MACCTL_ENABLED);
1992 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
1993 for (i = 40; i; i--) {
1994 tmp = b43legacy_read32(dev,
1995 B43legacy_MMIO_GEN_IRQ_REASON);
1996 if (tmp & B43legacy_IRQ_MAC_SUSPENDED)
1997 goto out;
1998 msleep(1);
1999 }
2000 b43legacyerr(dev->wl, "MAC suspend failed\n");
2001 }
2002out:
2003 dev->mac_suspended++;
2004}
2005
2006static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev)
2007{
2008 struct b43legacy_wl *wl = dev->wl;
2009 u32 ctl;
2010 u16 cfp_pretbtt;
2011
2012 ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2013 /* Reset status to STA infrastructure mode. */
2014 ctl &= ~B43legacy_MACCTL_AP;
2015 ctl &= ~B43legacy_MACCTL_KEEP_CTL;
2016 ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP;
2017 ctl &= ~B43legacy_MACCTL_KEEP_BAD;
2018 ctl &= ~B43legacy_MACCTL_PROMISC;
2019 ctl &= ~B43legacy_MACCTL_BEACPROMISC;
2020 ctl |= B43legacy_MACCTL_INFRA;
2021
2022 if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP))
2023 ctl |= B43legacy_MACCTL_AP;
2024 else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))
2025 ctl &= ~B43legacy_MACCTL_INFRA;
2026
2027 if (wl->filter_flags & FIF_CONTROL)
2028 ctl |= B43legacy_MACCTL_KEEP_CTL;
2029 if (wl->filter_flags & FIF_FCSFAIL)
2030 ctl |= B43legacy_MACCTL_KEEP_BAD;
2031 if (wl->filter_flags & FIF_PLCPFAIL)
2032 ctl |= B43legacy_MACCTL_KEEP_BADPLCP;
2033 if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2034 ctl |= B43legacy_MACCTL_PROMISC;
2035 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2036 ctl |= B43legacy_MACCTL_BEACPROMISC;
2037
2038 /* Workaround: On old hardware the HW-MAC-address-filter
2039 * doesn't work properly, so always run promisc in filter
2040 * it in software. */
2041 if (dev->dev->id.revision <= 4)
2042 ctl |= B43legacy_MACCTL_PROMISC;
2043
2044 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl);
2045
2046 cfp_pretbtt = 2;
2047 if ((ctl & B43legacy_MACCTL_INFRA) &&
2048 !(ctl & B43legacy_MACCTL_AP)) {
2049 if (dev->dev->bus->chip_id == 0x4306 &&
2050 dev->dev->bus->chip_rev == 3)
2051 cfp_pretbtt = 100;
2052 else
2053 cfp_pretbtt = 50;
2054 }
2055 b43legacy_write16(dev, 0x612, cfp_pretbtt);
2056}
2057
2058static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev,
2059 u16 rate,
2060 int is_ofdm)
2061{
2062 u16 offset;
2063
2064 if (is_ofdm) {
2065 offset = 0x480;
2066 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2067 } else {
2068 offset = 0x4C0;
2069 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2070 }
2071 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20,
2072 b43legacy_shm_read16(dev,
2073 B43legacy_SHM_SHARED, offset));
2074}
2075
2076static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev)
2077{
2078 switch (dev->phy.type) {
2079 case B43legacy_PHYTYPE_G:
2080 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1);
2081 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1);
2082 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1);
2083 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1);
2084 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1);
2085 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1);
2086 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1);
2087 /* fallthrough */
2088 case B43legacy_PHYTYPE_B:
2089 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0);
2090 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0);
2091 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0);
2092 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0);
2093 break;
2094 default:
2095 B43legacy_BUG_ON(1);
2096 }
2097}
2098
2099/* Set the TX-Antenna for management frames sent by firmware. */
2100static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev,
2101 int antenna)
2102{
2103 u16 ant = 0;
2104 u16 tmp;
2105
2106 switch (antenna) {
2107 case B43legacy_ANTENNA0:
2108 ant |= B43legacy_TX4_PHY_ANT0;
2109 break;
2110 case B43legacy_ANTENNA1:
2111 ant |= B43legacy_TX4_PHY_ANT1;
2112 break;
2113 case B43legacy_ANTENNA_AUTO:
2114 ant |= B43legacy_TX4_PHY_ANTLAST;
2115 break;
2116 default:
2117 B43legacy_BUG_ON(1);
2118 }
2119
2120 /* FIXME We also need to set the other flags of the PHY control
2121 * field somewhere. */
2122
2123 /* For Beacons */
2124 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2125 B43legacy_SHM_SH_BEACPHYCTL);
2126 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2127 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2128 B43legacy_SHM_SH_BEACPHYCTL, tmp);
2129 /* For ACK/CTS */
2130 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2131 B43legacy_SHM_SH_ACKCTSPHYCTL);
2132 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2133 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2134 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp);
2135 /* For Probe Resposes */
2136 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2137 B43legacy_SHM_SH_PRPHYCTL);
2138 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant;
2139 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2140 B43legacy_SHM_SH_PRPHYCTL, tmp);
2141}
2142
2143/* This is the opposite of b43legacy_chip_init() */
2144static void b43legacy_chip_exit(struct b43legacy_wldev *dev)
2145{
2146 b43legacy_radio_turn_off(dev, 1);
2147 b43legacy_gpio_cleanup(dev);
2148 /* firmware is released later */
2149}
2150
2151/* Initialize the chip
2152 * http://bcm-specs.sipsolutions.net/ChipInit
2153 */
2154static int b43legacy_chip_init(struct b43legacy_wldev *dev)
2155{
2156 struct b43legacy_phy *phy = &dev->phy;
2157 int err;
2158 int tmp;
2159 u32 value32, macctl;
2160 u16 value16;
2161
2162 /* Initialize the MAC control */
2163 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED;
2164 if (dev->phy.gmode)
2165 macctl |= B43legacy_MACCTL_GMODE;
2166 macctl |= B43legacy_MACCTL_INFRA;
2167 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
2168
2169 err = b43legacy_upload_microcode(dev);
2170 if (err)
2171 goto out; /* firmware is released later */
2172
2173 err = b43legacy_gpio_init(dev);
2174 if (err)
2175 goto out; /* firmware is released later */
2176
2177 err = b43legacy_upload_initvals(dev);
2178 if (err)
2179 goto err_gpio_clean;
2180 b43legacy_radio_turn_on(dev);
2181
2182 b43legacy_write16(dev, 0x03E6, 0x0000);
2183 err = b43legacy_phy_init(dev);
2184 if (err)
2185 goto err_radio_off;
2186
2187 /* Select initial Interference Mitigation. */
2188 tmp = phy->interfmode;
2189 phy->interfmode = B43legacy_INTERFMODE_NONE;
2190 b43legacy_radio_set_interference_mitigation(dev, tmp);
2191
2192 b43legacy_phy_set_antenna_diversity(dev);
2193 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT);
2194
2195 if (phy->type == B43legacy_PHYTYPE_B) {
2196 value16 = b43legacy_read16(dev, 0x005E);
2197 value16 |= 0x0004;
2198 b43legacy_write16(dev, 0x005E, value16);
2199 }
2200 b43legacy_write32(dev, 0x0100, 0x01000000);
2201 if (dev->dev->id.revision < 5)
2202 b43legacy_write32(dev, 0x010C, 0x01000000);
2203
2204 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2205 value32 &= ~B43legacy_MACCTL_INFRA;
2206 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2207 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2208 value32 |= B43legacy_MACCTL_INFRA;
2209 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32);
2210
2211 if (b43legacy_using_pio(dev)) {
2212 b43legacy_write32(dev, 0x0210, 0x00000100);
2213 b43legacy_write32(dev, 0x0230, 0x00000100);
2214 b43legacy_write32(dev, 0x0250, 0x00000100);
2215 b43legacy_write32(dev, 0x0270, 0x00000100);
2216 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034,
2217 0x0000);
2218 }
2219
2220 /* Probe Response Timeout value */
2221 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2222 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000);
2223
2224 /* Initially set the wireless operation mode. */
2225 b43legacy_adjust_opmode(dev);
2226
2227 if (dev->dev->id.revision < 3) {
2228 b43legacy_write16(dev, 0x060E, 0x0000);
2229 b43legacy_write16(dev, 0x0610, 0x8000);
2230 b43legacy_write16(dev, 0x0604, 0x0000);
2231 b43legacy_write16(dev, 0x0606, 0x0200);
2232 } else {
2233 b43legacy_write32(dev, 0x0188, 0x80000000);
2234 b43legacy_write32(dev, 0x018C, 0x02000000);
2235 }
2236 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000);
2237 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2238 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2239 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2240 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2241 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2242 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2243
2244 value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2245 value32 |= B43legacy_TMSLOW_MACPHYCLKEN;
2246 ssb_write32(dev->dev, SSB_TMSLOW, value32);
2247
2248 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY,
2249 dev->dev->bus->chipco.fast_pwrup_delay);
2250
2251 /* PHY TX errors counter. */
2252 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2253
2254 B43legacy_WARN_ON(err != 0);
2255 b43legacydbg(dev->wl, "Chip initialized\n");
2256out:
2257 return err;
2258
2259err_radio_off:
2260 b43legacy_radio_turn_off(dev, 1);
2261err_gpio_clean:
2262 b43legacy_gpio_cleanup(dev);
2263 goto out;
2264}
2265
2266static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev)
2267{
2268 struct b43legacy_phy *phy = &dev->phy;
2269
2270 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2)
2271 return;
2272
2273 b43legacy_mac_suspend(dev);
2274 b43legacy_phy_lo_g_measure(dev);
2275 b43legacy_mac_enable(dev);
2276}
2277
2278static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev)
2279{
2280 b43legacy_phy_lo_mark_all_unused(dev);
2281 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) {
2282 b43legacy_mac_suspend(dev);
2283 b43legacy_calc_nrssi_slope(dev);
2284 b43legacy_mac_enable(dev);
2285 }
2286}
2287
2288static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev)
2289{
2290 /* Update device statistics. */
2291 b43legacy_calculate_link_quality(dev);
2292}
2293
2294static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev)
2295{
2296 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */
2297
2298 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT);
2299 wmb();
2300}
2301
2302static void do_periodic_work(struct b43legacy_wldev *dev)
2303{
2304 unsigned int state;
2305
2306 state = dev->periodic_state;
2307 if (state % 8 == 0)
2308 b43legacy_periodic_every120sec(dev);
2309 if (state % 4 == 0)
2310 b43legacy_periodic_every60sec(dev);
2311 if (state % 2 == 0)
2312 b43legacy_periodic_every30sec(dev);
2313 b43legacy_periodic_every15sec(dev);
2314}
2315
2316/* Periodic work locking policy:
2317 * The whole periodic work handler is protected by
2318 * wl->mutex. If another lock is needed somewhere in the
2319 * pwork callchain, it's acquired in-place, where it's needed.
2320 */
2321static void b43legacy_periodic_work_handler(struct work_struct *work)
2322{
2323 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev,
2324 periodic_work.work);
2325 struct b43legacy_wl *wl = dev->wl;
2326 unsigned long delay;
2327
2328 mutex_lock(&wl->mutex);
2329
2330 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED))
2331 goto out;
2332 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP))
2333 goto out_requeue;
2334
2335 do_periodic_work(dev);
2336
2337 dev->periodic_state++;
2338out_requeue:
2339 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST))
2340 delay = msecs_to_jiffies(50);
2341 else
2342 delay = round_jiffies_relative(HZ * 15);
2343 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
2344out:
2345 mutex_unlock(&wl->mutex);
2346}
2347
2348static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev)
2349{
2350 struct delayed_work *work = &dev->periodic_work;
2351
2352 dev->periodic_state = 0;
2353 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler);
2354 ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
2355}
2356
2357/* Validate access to the chip (SHM) */
2358static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev)
2359{
2360 u32 value;
2361 u32 shm_backup;
2362
2363 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0);
2364 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA);
2365 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2366 0xAA5555AA)
2367 goto error;
2368 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55);
2369 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) !=
2370 0x55AAAA55)
2371 goto error;
2372 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup);
2373
2374 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
2375 if ((value | B43legacy_MACCTL_GMODE) !=
2376 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED))
2377 goto error;
2378
2379 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON);
2380 if (value)
2381 goto error;
2382
2383 return 0;
2384error:
2385 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n");
2386 return -ENODEV;
2387}
2388
2389static void b43legacy_security_init(struct b43legacy_wldev *dev)
2390{
2391 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2392 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2393 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2394 0x0056);
2395 /* KTP is a word address, but we address SHM bytewise.
2396 * So multiply by two.
2397 */
2398 dev->ktp *= 2;
2399 if (dev->dev->id.revision >= 5)
2400 /* Number of RCMTA address slots */
2401 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT,
2402 dev->max_nr_keys - 8);
2403}
2404
2405#ifdef CONFIG_B43LEGACY_HWRNG
2406static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
2407{
2408 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
2409 unsigned long flags;
2410
2411 /* Don't take wl->mutex here, as it could deadlock with
2412 * hwrng internal locking. It's not needed to take
2413 * wl->mutex here, anyway. */
2414
2415 spin_lock_irqsave(&wl->irq_lock, flags);
2416 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG);
2417 spin_unlock_irqrestore(&wl->irq_lock, flags);
2418
2419 return (sizeof(u16));
2420}
2421#endif
2422
2423static void b43legacy_rng_exit(struct b43legacy_wl *wl)
2424{
2425#ifdef CONFIG_B43LEGACY_HWRNG
2426 if (wl->rng_initialized)
2427 hwrng_unregister(&wl->rng);
2428#endif
2429}
2430
2431static int b43legacy_rng_init(struct b43legacy_wl *wl)
2432{
2433 int err = 0;
2434
2435#ifdef CONFIG_B43LEGACY_HWRNG
2436 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2437 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2438 wl->rng.name = wl->rng_name;
2439 wl->rng.data_read = b43legacy_rng_read;
2440 wl->rng.priv = (unsigned long)wl;
2441 wl->rng_initialized = 1;
2442 err = hwrng_register(&wl->rng);
2443 if (err) {
2444 wl->rng_initialized = 0;
2445 b43legacyerr(wl, "Failed to register the random "
2446 "number generator (%d)\n", err);
2447 }
2448
2449#endif
2450 return err;
2451}
2452
2453static void b43legacy_tx_work(struct work_struct *work)
2454{
2455 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl,
2456 tx_work);
2457 struct b43legacy_wldev *dev;
2458 struct sk_buff *skb;
2459 int queue_num;
2460 int err = 0;
2461
2462 mutex_lock(&wl->mutex);
2463 dev = wl->current_dev;
2464 if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) {
2465 mutex_unlock(&wl->mutex);
2466 return;
2467 }
2468
2469 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2470 while (skb_queue_len(&wl->tx_queue[queue_num])) {
2471 skb = skb_dequeue(&wl->tx_queue[queue_num]);
2472 if (b43legacy_using_pio(dev))
2473 err = b43legacy_pio_tx(dev, skb);
2474 else
2475 err = b43legacy_dma_tx(dev, skb);
2476 if (err == -ENOSPC) {
2477 wl->tx_queue_stopped[queue_num] = 1;
2478 ieee80211_stop_queue(wl->hw, queue_num);
2479 skb_queue_head(&wl->tx_queue[queue_num], skb);
2480 break;
2481 }
2482 if (unlikely(err))
2483 dev_kfree_skb(skb); /* Drop it */
2484 err = 0;
2485 }
2486
2487 if (!err)
2488 wl->tx_queue_stopped[queue_num] = 0;
2489 }
2490
2491 mutex_unlock(&wl->mutex);
2492}
2493
2494static void b43legacy_op_tx(struct ieee80211_hw *hw,
2495 struct sk_buff *skb)
2496{
2497 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2498
2499 if (unlikely(skb->len < 2 + 2 + 6)) {
2500 /* Too short, this can't be a valid frame. */
2501 dev_kfree_skb_any(skb);
2502 return;
2503 }
2504 B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags);
2505
2506 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
2507 if (!wl->tx_queue_stopped[skb->queue_mapping])
2508 ieee80211_queue_work(wl->hw, &wl->tx_work);
2509 else
2510 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
2511}
2512
2513static int b43legacy_op_conf_tx(struct ieee80211_hw *hw,
2514 struct ieee80211_vif *vif, u16 queue,
2515 const struct ieee80211_tx_queue_params *params)
2516{
2517 return 0;
2518}
2519
2520static int b43legacy_op_get_stats(struct ieee80211_hw *hw,
2521 struct ieee80211_low_level_stats *stats)
2522{
2523 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2524 unsigned long flags;
2525
2526 spin_lock_irqsave(&wl->irq_lock, flags);
2527 memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2528 spin_unlock_irqrestore(&wl->irq_lock, flags);
2529
2530 return 0;
2531}
2532
2533static const char *phymode_to_string(unsigned int phymode)
2534{
2535 switch (phymode) {
2536 case B43legacy_PHYMODE_B:
2537 return "B";
2538 case B43legacy_PHYMODE_G:
2539 return "G";
2540 default:
2541 B43legacy_BUG_ON(1);
2542 }
2543 return "";
2544}
2545
2546static int find_wldev_for_phymode(struct b43legacy_wl *wl,
2547 unsigned int phymode,
2548 struct b43legacy_wldev **dev,
2549 bool *gmode)
2550{
2551 struct b43legacy_wldev *d;
2552
2553 list_for_each_entry(d, &wl->devlist, list) {
2554 if (d->phy.possible_phymodes & phymode) {
2555 /* Ok, this device supports the PHY-mode.
2556 * Set the gmode bit. */
2557 *gmode = true;
2558 *dev = d;
2559
2560 return 0;
2561 }
2562 }
2563
2564 return -ESRCH;
2565}
2566
2567static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
2568{
2569 struct ssb_device *sdev = dev->dev;
2570 u32 tmslow;
2571
2572 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2573 tmslow &= ~B43legacy_TMSLOW_GMODE;
2574 tmslow |= B43legacy_TMSLOW_PHYRESET;
2575 tmslow |= SSB_TMSLOW_FGC;
2576 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2577 msleep(1);
2578
2579 tmslow = ssb_read32(sdev, SSB_TMSLOW);
2580 tmslow &= ~SSB_TMSLOW_FGC;
2581 tmslow |= B43legacy_TMSLOW_PHYRESET;
2582 ssb_write32(sdev, SSB_TMSLOW, tmslow);
2583 msleep(1);
2584}
2585
2586/* Expects wl->mutex locked */
2587static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
2588 unsigned int new_mode)
2589{
2590 struct b43legacy_wldev *uninitialized_var(up_dev);
2591 struct b43legacy_wldev *down_dev;
2592 int err;
2593 bool gmode = false;
2594 int prev_status;
2595
2596 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2597 if (err) {
2598 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n",
2599 phymode_to_string(new_mode));
2600 return err;
2601 }
2602 if ((up_dev == wl->current_dev) &&
2603 (!!wl->current_dev->phy.gmode == !!gmode))
2604 /* This device is already running. */
2605 return 0;
2606 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2607 phymode_to_string(new_mode));
2608 down_dev = wl->current_dev;
2609
2610 prev_status = b43legacy_status(down_dev);
2611 /* Shutdown the currently running core. */
2612 if (prev_status >= B43legacy_STAT_STARTED)
2613 b43legacy_wireless_core_stop(down_dev);
2614 if (prev_status >= B43legacy_STAT_INITIALIZED)
2615 b43legacy_wireless_core_exit(down_dev);
2616
2617 if (down_dev != up_dev)
2618 /* We switch to a different core, so we put PHY into
2619 * RESET on the old core. */
2620 b43legacy_put_phy_into_reset(down_dev);
2621
2622 /* Now start the new core. */
2623 up_dev->phy.gmode = gmode;
2624 if (prev_status >= B43legacy_STAT_INITIALIZED) {
2625 err = b43legacy_wireless_core_init(up_dev);
2626 if (err) {
2627 b43legacyerr(wl, "Fatal: Could not initialize device"
2628 " for newly selected %s-PHY mode\n",
2629 phymode_to_string(new_mode));
2630 goto init_failure;
2631 }
2632 }
2633 if (prev_status >= B43legacy_STAT_STARTED) {
2634 err = b43legacy_wireless_core_start(up_dev);
2635 if (err) {
2636 b43legacyerr(wl, "Fatal: Could not start device for "
2637 "newly selected %s-PHY mode\n",
2638 phymode_to_string(new_mode));
2639 b43legacy_wireless_core_exit(up_dev);
2640 goto init_failure;
2641 }
2642 }
2643 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status);
2644
2645 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0);
2646
2647 wl->current_dev = up_dev;
2648
2649 return 0;
2650init_failure:
2651 /* Whoops, failed to init the new core. No core is operating now. */
2652 wl->current_dev = NULL;
2653 return err;
2654}
2655
2656/* Write the short and long frame retry limit values. */
2657static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
2658 unsigned int short_retry,
2659 unsigned int long_retry)
2660{
2661 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
2662 * the chip-internal counter. */
2663 short_retry = min(short_retry, (unsigned int)0xF);
2664 long_retry = min(long_retry, (unsigned int)0xF);
2665
2666 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry);
2667 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
2668}
2669
2670static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
2671 u32 changed)
2672{
2673 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2674 struct b43legacy_wldev *dev;
2675 struct b43legacy_phy *phy;
2676 struct ieee80211_conf *conf = &hw->conf;
2677 unsigned long flags;
2678 unsigned int new_phymode = 0xFFFF;
2679 int antenna_tx;
2680 int err = 0;
2681
2682 antenna_tx = B43legacy_ANTENNA_DEFAULT;
2683
2684 mutex_lock(&wl->mutex);
2685 dev = wl->current_dev;
2686 phy = &dev->phy;
2687
2688 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
2689 b43legacy_set_retry_limits(dev,
2690 conf->short_frame_max_tx_count,
2691 conf->long_frame_max_tx_count);
2692 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
2693 if (!changed)
2694 goto out_unlock_mutex;
2695
2696 /* Switch the PHY mode (if necessary). */
2697 switch (conf->channel->band) {
2698 case IEEE80211_BAND_2GHZ:
2699 if (phy->type == B43legacy_PHYTYPE_B)
2700 new_phymode = B43legacy_PHYMODE_B;
2701 else
2702 new_phymode = B43legacy_PHYMODE_G;
2703 break;
2704 default:
2705 B43legacy_WARN_ON(1);
2706 }
2707 err = b43legacy_switch_phymode(wl, new_phymode);
2708 if (err)
2709 goto out_unlock_mutex;
2710
2711 /* Disable IRQs while reconfiguring the device.
2712 * This makes it possible to drop the spinlock throughout
2713 * the reconfiguration process. */
2714 spin_lock_irqsave(&wl->irq_lock, flags);
2715 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2716 spin_unlock_irqrestore(&wl->irq_lock, flags);
2717 goto out_unlock_mutex;
2718 }
2719 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2720 spin_unlock_irqrestore(&wl->irq_lock, flags);
2721 b43legacy_synchronize_irq(dev);
2722
2723 /* Switch to the requested channel.
2724 * The firmware takes care of races with the TX handler. */
2725 if (conf->channel->hw_value != phy->channel)
2726 b43legacy_radio_selectchannel(dev, conf->channel->hw_value, 0);
2727
2728 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
2729
2730 /* Adjust the desired TX power level. */
2731 if (conf->power_level != 0) {
2732 if (conf->power_level != phy->power_level) {
2733 phy->power_level = conf->power_level;
2734 b43legacy_phy_xmitpower(dev);
2735 }
2736 }
2737
2738 /* Antennas for RX and management frame TX. */
2739 b43legacy_mgmtframe_txantenna(dev, antenna_tx);
2740
2741 if (wl->radio_enabled != phy->radio_on) {
2742 if (wl->radio_enabled) {
2743 b43legacy_radio_turn_on(dev);
2744 b43legacyinfo(dev->wl, "Radio turned on by software\n");
2745 if (!dev->radio_hw_enable)
2746 b43legacyinfo(dev->wl, "The hardware RF-kill"
2747 " button still turns the radio"
2748 " physically off. Press the"
2749 " button to turn it on.\n");
2750 } else {
2751 b43legacy_radio_turn_off(dev, 0);
2752 b43legacyinfo(dev->wl, "Radio turned off by"
2753 " software\n");
2754 }
2755 }
2756
2757 spin_lock_irqsave(&wl->irq_lock, flags);
2758 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2759 mmiowb();
2760 spin_unlock_irqrestore(&wl->irq_lock, flags);
2761out_unlock_mutex:
2762 mutex_unlock(&wl->mutex);
2763
2764 return err;
2765}
2766
2767static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates)
2768{
2769 struct ieee80211_supported_band *sband =
2770 dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2771 struct ieee80211_rate *rate;
2772 int i;
2773 u16 basic, direct, offset, basic_offset, rateptr;
2774
2775 for (i = 0; i < sband->n_bitrates; i++) {
2776 rate = &sband->bitrates[i];
2777
2778 if (b43legacy_is_cck_rate(rate->hw_value)) {
2779 direct = B43legacy_SHM_SH_CCKDIRECT;
2780 basic = B43legacy_SHM_SH_CCKBASIC;
2781 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2782 offset &= 0xF;
2783 } else {
2784 direct = B43legacy_SHM_SH_OFDMDIRECT;
2785 basic = B43legacy_SHM_SH_OFDMBASIC;
2786 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2787 offset &= 0xF;
2788 }
2789
2790 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
2791
2792 if (b43legacy_is_cck_rate(rate->hw_value)) {
2793 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value);
2794 basic_offset &= 0xF;
2795 } else {
2796 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value);
2797 basic_offset &= 0xF;
2798 }
2799
2800 /*
2801 * Get the pointer that we need to point to
2802 * from the direct map
2803 */
2804 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED,
2805 direct + 2 * basic_offset);
2806 /* and write it to the basic map */
2807 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
2808 basic + 2 * offset, rateptr);
2809 }
2810}
2811
2812static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
2813 struct ieee80211_vif *vif,
2814 struct ieee80211_bss_conf *conf,
2815 u32 changed)
2816{
2817 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2818 struct b43legacy_wldev *dev;
2819 unsigned long flags;
2820
2821 mutex_lock(&wl->mutex);
2822 B43legacy_WARN_ON(wl->vif != vif);
2823
2824 dev = wl->current_dev;
2825
2826 /* Disable IRQs while reconfiguring the device.
2827 * This makes it possible to drop the spinlock throughout
2828 * the reconfiguration process. */
2829 spin_lock_irqsave(&wl->irq_lock, flags);
2830 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
2831 spin_unlock_irqrestore(&wl->irq_lock, flags);
2832 goto out_unlock_mutex;
2833 }
2834 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2835
2836 if (changed & BSS_CHANGED_BSSID) {
2837 b43legacy_synchronize_irq(dev);
2838
2839 if (conf->bssid)
2840 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2841 else
2842 memset(wl->bssid, 0, ETH_ALEN);
2843 }
2844
2845 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) {
2846 if (changed & BSS_CHANGED_BEACON &&
2847 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2848 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2849 b43legacy_update_templates(wl);
2850
2851 if (changed & BSS_CHANGED_BSSID)
2852 b43legacy_write_mac_bssid_templates(dev);
2853 }
2854 spin_unlock_irqrestore(&wl->irq_lock, flags);
2855
2856 b43legacy_mac_suspend(dev);
2857
2858 if (changed & BSS_CHANGED_BEACON_INT &&
2859 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) ||
2860 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)))
2861 b43legacy_set_beacon_int(dev, conf->beacon_int);
2862
2863 if (changed & BSS_CHANGED_BASIC_RATES)
2864 b43legacy_update_basic_rates(dev, conf->basic_rates);
2865
2866 if (changed & BSS_CHANGED_ERP_SLOT) {
2867 if (conf->use_short_slot)
2868 b43legacy_short_slot_timing_enable(dev);
2869 else
2870 b43legacy_short_slot_timing_disable(dev);
2871 }
2872
2873 b43legacy_mac_enable(dev);
2874
2875 spin_lock_irqsave(&wl->irq_lock, flags);
2876 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2877 /* XXX: why? */
2878 mmiowb();
2879 spin_unlock_irqrestore(&wl->irq_lock, flags);
2880 out_unlock_mutex:
2881 mutex_unlock(&wl->mutex);
2882}
2883
2884static void b43legacy_op_configure_filter(struct ieee80211_hw *hw,
2885 unsigned int changed,
2886 unsigned int *fflags,u64 multicast)
2887{
2888 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
2889 struct b43legacy_wldev *dev = wl->current_dev;
2890 unsigned long flags;
2891
2892 if (!dev) {
2893 *fflags = 0;
2894 return;
2895 }
2896
2897 spin_lock_irqsave(&wl->irq_lock, flags);
2898 *fflags &= FIF_PROMISC_IN_BSS |
2899 FIF_ALLMULTI |
2900 FIF_FCSFAIL |
2901 FIF_PLCPFAIL |
2902 FIF_CONTROL |
2903 FIF_OTHER_BSS |
2904 FIF_BCN_PRBRESP_PROMISC;
2905
2906 changed &= FIF_PROMISC_IN_BSS |
2907 FIF_ALLMULTI |
2908 FIF_FCSFAIL |
2909 FIF_PLCPFAIL |
2910 FIF_CONTROL |
2911 FIF_OTHER_BSS |
2912 FIF_BCN_PRBRESP_PROMISC;
2913
2914 wl->filter_flags = *fflags;
2915
2916 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED)
2917 b43legacy_adjust_opmode(dev);
2918 spin_unlock_irqrestore(&wl->irq_lock, flags);
2919}
2920
2921/* Locking: wl->mutex */
2922static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
2923{
2924 struct b43legacy_wl *wl = dev->wl;
2925 unsigned long flags;
2926 int queue_num;
2927
2928 if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
2929 return;
2930
2931 /* Disable and sync interrupts. We must do this before than
2932 * setting the status to INITIALIZED, as the interrupt handler
2933 * won't care about IRQs then. */
2934 spin_lock_irqsave(&wl->irq_lock, flags);
2935 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0);
2936 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */
2937 spin_unlock_irqrestore(&wl->irq_lock, flags);
2938 b43legacy_synchronize_irq(dev);
2939
2940 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
2941
2942 mutex_unlock(&wl->mutex);
2943 /* Must unlock as it would otherwise deadlock. No races here.
2944 * Cancel the possibly running self-rearming periodic work. */
2945 cancel_delayed_work_sync(&dev->periodic_work);
2946 cancel_work_sync(&wl->tx_work);
2947 mutex_lock(&wl->mutex);
2948
2949 /* Drain all TX queues. */
2950 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
2951 while (skb_queue_len(&wl->tx_queue[queue_num]))
2952 dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
2953 }
2954
2955b43legacy_mac_suspend(dev);
2956 free_irq(dev->dev->irq, dev);
2957 b43legacydbg(wl, "Wireless interface stopped\n");
2958}
2959
2960/* Locking: wl->mutex */
2961static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev)
2962{
2963 int err;
2964
2965 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED);
2966
2967 drain_txstatus_queue(dev);
2968 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler,
2969 IRQF_SHARED, KBUILD_MODNAME, dev);
2970 if (err) {
2971 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n",
2972 dev->dev->irq);
2973 goto out;
2974 }
2975 /* We are ready to run. */
2976 ieee80211_wake_queues(dev->wl->hw);
2977 b43legacy_set_status(dev, B43legacy_STAT_STARTED);
2978
2979 /* Start data flow (TX/RX) */
2980 b43legacy_mac_enable(dev);
2981 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
2982
2983 /* Start maintenance work */
2984 b43legacy_periodic_tasks_setup(dev);
2985
2986 b43legacydbg(dev->wl, "Wireless interface started\n");
2987out:
2988 return err;
2989}
2990
2991/* Get PHY and RADIO versioning numbers */
2992static int b43legacy_phy_versioning(struct b43legacy_wldev *dev)
2993{
2994 struct b43legacy_phy *phy = &dev->phy;
2995 u32 tmp;
2996 u8 analog_type;
2997 u8 phy_type;
2998 u8 phy_rev;
2999 u16 radio_manuf;
3000 u16 radio_ver;
3001 u16 radio_rev;
3002 int unsupported = 0;
3003
3004 /* Get PHY versioning */
3005 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER);
3006 analog_type = (tmp & B43legacy_PHYVER_ANALOG)
3007 >> B43legacy_PHYVER_ANALOG_SHIFT;
3008 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT;
3009 phy_rev = (tmp & B43legacy_PHYVER_VERSION);
3010 switch (phy_type) {
3011 case B43legacy_PHYTYPE_B:
3012 if (phy_rev != 2 && phy_rev != 4
3013 && phy_rev != 6 && phy_rev != 7)
3014 unsupported = 1;
3015 break;
3016 case B43legacy_PHYTYPE_G:
3017 if (phy_rev > 8)
3018 unsupported = 1;
3019 break;
3020 default:
3021 unsupported = 1;
3022 }
3023 if (unsupported) {
3024 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY "
3025 "(Analog %u, Type %u, Revision %u)\n",
3026 analog_type, phy_type, phy_rev);
3027 return -EOPNOTSUPP;
3028 }
3029 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3030 analog_type, phy_type, phy_rev);
3031
3032
3033 /* Get RADIO versioning */
3034 if (dev->dev->bus->chip_id == 0x4317) {
3035 if (dev->dev->bus->chip_rev == 0)
3036 tmp = 0x3205017F;
3037 else if (dev->dev->bus->chip_rev == 1)
3038 tmp = 0x4205017F;
3039 else
3040 tmp = 0x5205017F;
3041 } else {
3042 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3043 B43legacy_RADIOCTL_ID);
3044 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH);
3045 tmp <<= 16;
3046 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL,
3047 B43legacy_RADIOCTL_ID);
3048 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW);
3049 }
3050 radio_manuf = (tmp & 0x00000FFF);
3051 radio_ver = (tmp & 0x0FFFF000) >> 12;
3052 radio_rev = (tmp & 0xF0000000) >> 28;
3053 switch (phy_type) {
3054 case B43legacy_PHYTYPE_B:
3055 if ((radio_ver & 0xFFF0) != 0x2050)
3056 unsupported = 1;
3057 break;
3058 case B43legacy_PHYTYPE_G:
3059 if (radio_ver != 0x2050)
3060 unsupported = 1;
3061 break;
3062 default:
3063 B43legacy_BUG_ON(1);
3064 }
3065 if (unsupported) {
3066 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO "
3067 "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3068 radio_manuf, radio_ver, radio_rev);
3069 return -EOPNOTSUPP;
3070 }
3071 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X,"
3072 " Revision %u\n", radio_manuf, radio_ver, radio_rev);
3073
3074
3075 phy->radio_manuf = radio_manuf;
3076 phy->radio_ver = radio_ver;
3077 phy->radio_rev = radio_rev;
3078
3079 phy->analog = analog_type;
3080 phy->type = phy_type;
3081 phy->rev = phy_rev;
3082
3083 return 0;
3084}
3085
3086static void setup_struct_phy_for_init(struct b43legacy_wldev *dev,
3087 struct b43legacy_phy *phy)
3088{
3089 struct b43legacy_lopair *lo;
3090 int i;
3091
3092 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3093 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3094
3095 /* Assume the radio is enabled. If it's not enabled, the state will
3096 * immediately get fixed on the first periodic work run. */
3097 dev->radio_hw_enable = true;
3098
3099 phy->savedpctlreg = 0xFFFF;
3100 phy->aci_enable = false;
3101 phy->aci_wlan_automatic = false;
3102 phy->aci_hw_rssi = false;
3103
3104 lo = phy->_lo_pairs;
3105 if (lo)
3106 memset(lo, 0, sizeof(struct b43legacy_lopair) *
3107 B43legacy_LO_COUNT);
3108 phy->max_lb_gain = 0;
3109 phy->trsw_rx_gain = 0;
3110
3111 /* Set default attenuation values. */
3112 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3113 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3114 phy->txctl1 = b43legacy_default_txctl1(dev);
3115 phy->txpwr_offset = 0;
3116
3117 /* NRSSI */
3118 phy->nrssislope = 0;
3119 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3120 phy->nrssi[i] = -1000;
3121 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3122 phy->nrssi_lt[i] = i;
3123
3124 phy->lofcal = 0xFFFF;
3125 phy->initval = 0xFFFF;
3126
3127 phy->interfmode = B43legacy_INTERFMODE_NONE;
3128 phy->channel = 0xFF;
3129}
3130
3131static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev)
3132{
3133 /* Flags */
3134 dev->dfq_valid = false;
3135
3136 /* Stats */
3137 memset(&dev->stats, 0, sizeof(dev->stats));
3138
3139 setup_struct_phy_for_init(dev, &dev->phy);
3140
3141 /* IRQ related flags */
3142 dev->irq_reason = 0;
3143 memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3144 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE;
3145
3146 dev->mac_suspended = 1;
3147
3148 /* Noise calculation context */
3149 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3150}
3151
3152static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
3153 bool idle) {
3154 u16 pu_delay = 1050;
3155
3156 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3157 pu_delay = 500;
3158 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3159 pu_delay = max(pu_delay, (u16)2400);
3160
3161 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3162 B43legacy_SHM_SH_SPUWKUP, pu_delay);
3163}
3164
3165/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3166static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
3167{
3168 u16 pretbtt;
3169
3170 /* The time value is in microseconds. */
3171 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
3172 pretbtt = 2;
3173 else
3174 pretbtt = 250;
3175 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3176 B43legacy_SHM_SH_PRETBTT, pretbtt);
3177 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
3178}
3179
3180/* Shutdown a wireless core */
3181/* Locking: wl->mutex */
3182static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
3183{
3184 struct b43legacy_phy *phy = &dev->phy;
3185 u32 macctl;
3186
3187 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED);
3188 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED)
3189 return;
3190 b43legacy_set_status(dev, B43legacy_STAT_UNINIT);
3191
3192 /* Stop the microcode PSM. */
3193 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
3194 macctl &= ~B43legacy_MACCTL_PSM_RUN;
3195 macctl |= B43legacy_MACCTL_PSM_JMP0;
3196 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl);
3197
3198 b43legacy_leds_exit(dev);
3199 b43legacy_rng_exit(dev->wl);
3200 b43legacy_pio_free(dev);
3201 b43legacy_dma_free(dev);
3202 b43legacy_chip_exit(dev);
3203 b43legacy_radio_turn_off(dev, 1);
3204 b43legacy_switch_analog(dev, 0);
3205 if (phy->dyn_tssi_tbl)
3206 kfree(phy->tssi2dbm);
3207 kfree(phy->lo_control);
3208 phy->lo_control = NULL;
3209 if (dev->wl->current_beacon) {
3210 dev_kfree_skb_any(dev->wl->current_beacon);
3211 dev->wl->current_beacon = NULL;
3212 }
3213
3214 ssb_device_disable(dev->dev, 0);
3215 ssb_bus_may_powerdown(dev->dev->bus);
3216}
3217
3218static void prepare_phy_data_for_init(struct b43legacy_wldev *dev)
3219{
3220 struct b43legacy_phy *phy = &dev->phy;
3221 int i;
3222
3223 /* Set default attenuation values. */
3224 phy->bbatt = b43legacy_default_baseband_attenuation(dev);
3225 phy->rfatt = b43legacy_default_radio_attenuation(dev);
3226 phy->txctl1 = b43legacy_default_txctl1(dev);
3227 phy->txctl2 = 0xFFFF;
3228 phy->txpwr_offset = 0;
3229
3230 /* NRSSI */
3231 phy->nrssislope = 0;
3232 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3233 phy->nrssi[i] = -1000;
3234 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3235 phy->nrssi_lt[i] = i;
3236
3237 phy->lofcal = 0xFFFF;
3238 phy->initval = 0xFFFF;
3239
3240 phy->aci_enable = false;
3241 phy->aci_wlan_automatic = false;
3242 phy->aci_hw_rssi = false;
3243
3244 phy->antenna_diversity = 0xFFFF;
3245 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3246 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3247
3248 /* Flags */
3249 phy->calibrated = 0;
3250
3251 if (phy->_lo_pairs)
3252 memset(phy->_lo_pairs, 0,
3253 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT);
3254 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain));
3255}
3256
3257/* Initialize a wireless core */
3258static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
3259{
3260 struct b43legacy_wl *wl = dev->wl;
3261 struct ssb_bus *bus = dev->dev->bus;
3262 struct b43legacy_phy *phy = &dev->phy;
3263 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3264 int err;
3265 u32 hf;
3266 u32 tmp;
3267
3268 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3269
3270 err = ssb_bus_powerup(bus, 0);
3271 if (err)
3272 goto out;
3273 if (!ssb_device_is_enabled(dev->dev)) {
3274 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0;
3275 b43legacy_wireless_core_reset(dev, tmp);
3276 }
3277
3278 if ((phy->type == B43legacy_PHYTYPE_B) ||
3279 (phy->type == B43legacy_PHYTYPE_G)) {
3280 phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair)
3281 * B43legacy_LO_COUNT,
3282 GFP_KERNEL);
3283 if (!phy->_lo_pairs)
3284 return -ENOMEM;
3285 }
3286 setup_struct_wldev_for_init(dev);
3287
3288 err = b43legacy_phy_init_tssi2dbm_table(dev);
3289 if (err)
3290 goto err_kfree_lo_control;
3291
3292 /* Enable IRQ routing to this device. */
3293 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3294
3295 prepare_phy_data_for_init(dev);
3296 b43legacy_phy_calibrate(dev);
3297 err = b43legacy_chip_init(dev);
3298 if (err)
3299 goto err_kfree_tssitbl;
3300 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3301 B43legacy_SHM_SH_WLCOREREV,
3302 dev->dev->id.revision);
3303 hf = b43legacy_hf_read(dev);
3304 if (phy->type == B43legacy_PHYTYPE_G) {
3305 hf |= B43legacy_HF_SYMW;
3306 if (phy->rev == 1)
3307 hf |= B43legacy_HF_GDCW;
3308 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL)
3309 hf |= B43legacy_HF_OFDMPABOOST;
3310 } else if (phy->type == B43legacy_PHYTYPE_B) {
3311 hf |= B43legacy_HF_SYMW;
3312 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3313 hf &= ~B43legacy_HF_GDCW;
3314 }
3315 b43legacy_hf_write(dev, hf);
3316
3317 b43legacy_set_retry_limits(dev,
3318 B43legacy_DEFAULT_SHORT_RETRY_LIMIT,
3319 B43legacy_DEFAULT_LONG_RETRY_LIMIT);
3320
3321 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3322 0x0044, 3);
3323 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3324 0x0046, 2);
3325
3326 /* Disable sending probe responses from firmware.
3327 * Setting the MaxTime to one usec will always trigger
3328 * a timeout, so we never send any probe resp.
3329 * A timeout of zero is infinite. */
3330 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
3331 B43legacy_SHM_SH_PRMAXTIME, 1);
3332
3333 b43legacy_rate_memory_init(dev);
3334
3335 /* Minimum Contention Window */
3336 if (phy->type == B43legacy_PHYTYPE_B)
3337 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3338 0x0003, 31);
3339 else
3340 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3341 0x0003, 15);
3342 /* Maximum Contention Window */
3343 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS,
3344 0x0004, 1023);
3345
3346 do {
3347 if (b43legacy_using_pio(dev))
3348 err = b43legacy_pio_init(dev);
3349 else {
3350 err = b43legacy_dma_init(dev);
3351 if (!err)
3352 b43legacy_qos_init(dev);
3353 }
3354 } while (err == -EAGAIN);
3355 if (err)
3356 goto err_chip_exit;
3357
3358 b43legacy_set_synth_pu_delay(dev, 1);
3359
3360 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
3361 b43legacy_upload_card_macaddress(dev);
3362 b43legacy_security_init(dev);
3363 b43legacy_rng_init(wl);
3364
3365 ieee80211_wake_queues(dev->wl->hw);
3366 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED);
3367
3368 b43legacy_leds_init(dev);
3369out:
3370 return err;
3371
3372err_chip_exit:
3373 b43legacy_chip_exit(dev);
3374err_kfree_tssitbl:
3375 if (phy->dyn_tssi_tbl)
3376 kfree(phy->tssi2dbm);
3377err_kfree_lo_control:
3378 kfree(phy->lo_control);
3379 phy->lo_control = NULL;
3380 ssb_bus_may_powerdown(bus);
3381 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT);
3382 return err;
3383}
3384
3385static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
3386 struct ieee80211_vif *vif)
3387{
3388 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3389 struct b43legacy_wldev *dev;
3390 unsigned long flags;
3391 int err = -EOPNOTSUPP;
3392
3393 /* TODO: allow WDS/AP devices to coexist */
3394
3395 if (vif->type != NL80211_IFTYPE_AP &&
3396 vif->type != NL80211_IFTYPE_STATION &&
3397 vif->type != NL80211_IFTYPE_WDS &&
3398 vif->type != NL80211_IFTYPE_ADHOC)
3399 return -EOPNOTSUPP;
3400
3401 mutex_lock(&wl->mutex);
3402 if (wl->operating)
3403 goto out_mutex_unlock;
3404
3405 b43legacydbg(wl, "Adding Interface type %d\n", vif->type);
3406
3407 dev = wl->current_dev;
3408 wl->operating = true;
3409 wl->vif = vif;
3410 wl->if_type = vif->type;
3411 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
3412
3413 spin_lock_irqsave(&wl->irq_lock, flags);
3414 b43legacy_adjust_opmode(dev);
3415 b43legacy_set_pretbtt(dev);
3416 b43legacy_set_synth_pu_delay(dev, 0);
3417 b43legacy_upload_card_macaddress(dev);
3418 spin_unlock_irqrestore(&wl->irq_lock, flags);
3419
3420 err = 0;
3421 out_mutex_unlock:
3422 mutex_unlock(&wl->mutex);
3423
3424 return err;
3425}
3426
3427static void b43legacy_op_remove_interface(struct ieee80211_hw *hw,
3428 struct ieee80211_vif *vif)
3429{
3430 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3431 struct b43legacy_wldev *dev = wl->current_dev;
3432 unsigned long flags;
3433
3434 b43legacydbg(wl, "Removing Interface type %d\n", vif->type);
3435
3436 mutex_lock(&wl->mutex);
3437
3438 B43legacy_WARN_ON(!wl->operating);
3439 B43legacy_WARN_ON(wl->vif != vif);
3440 wl->vif = NULL;
3441
3442 wl->operating = false;
3443
3444 spin_lock_irqsave(&wl->irq_lock, flags);
3445 b43legacy_adjust_opmode(dev);
3446 memset(wl->mac_addr, 0, ETH_ALEN);
3447 b43legacy_upload_card_macaddress(dev);
3448 spin_unlock_irqrestore(&wl->irq_lock, flags);
3449
3450 mutex_unlock(&wl->mutex);
3451}
3452
3453static int b43legacy_op_start(struct ieee80211_hw *hw)
3454{
3455 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3456 struct b43legacy_wldev *dev = wl->current_dev;
3457 int did_init = 0;
3458 int err = 0;
3459
3460 /* Kill all old instance specific information to make sure
3461 * the card won't use it in the short timeframe between start
3462 * and mac80211 reconfiguring it. */
3463 memset(wl->bssid, 0, ETH_ALEN);
3464 memset(wl->mac_addr, 0, ETH_ALEN);
3465 wl->filter_flags = 0;
3466 wl->beacon0_uploaded = false;
3467 wl->beacon1_uploaded = false;
3468 wl->beacon_templates_virgin = true;
3469 wl->radio_enabled = true;
3470
3471 mutex_lock(&wl->mutex);
3472
3473 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
3474 err = b43legacy_wireless_core_init(dev);
3475 if (err)
3476 goto out_mutex_unlock;
3477 did_init = 1;
3478 }
3479
3480 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) {
3481 err = b43legacy_wireless_core_start(dev);
3482 if (err) {
3483 if (did_init)
3484 b43legacy_wireless_core_exit(dev);
3485 goto out_mutex_unlock;
3486 }
3487 }
3488
3489 wiphy_rfkill_start_polling(hw->wiphy);
3490
3491out_mutex_unlock:
3492 mutex_unlock(&wl->mutex);
3493
3494 return err;
3495}
3496
3497static void b43legacy_op_stop(struct ieee80211_hw *hw)
3498{
3499 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3500 struct b43legacy_wldev *dev = wl->current_dev;
3501
3502 cancel_work_sync(&(wl->beacon_update_trigger));
3503
3504 mutex_lock(&wl->mutex);
3505 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED)
3506 b43legacy_wireless_core_stop(dev);
3507 b43legacy_wireless_core_exit(dev);
3508 wl->radio_enabled = false;
3509 mutex_unlock(&wl->mutex);
3510}
3511
3512static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
3513 struct ieee80211_sta *sta, bool set)
3514{
3515 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3516 unsigned long flags;
3517
3518 spin_lock_irqsave(&wl->irq_lock, flags);
3519 b43legacy_update_templates(wl);
3520 spin_unlock_irqrestore(&wl->irq_lock, flags);
3521
3522 return 0;
3523}
3524
3525static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
3526 struct survey_info *survey)
3527{
3528 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
3529 struct b43legacy_wldev *dev = wl->current_dev;
3530 struct ieee80211_conf *conf = &hw->conf;
3531
3532 if (idx != 0)
3533 return -ENOENT;
3534
3535 survey->channel = conf->channel;
3536 survey->filled = SURVEY_INFO_NOISE_DBM;
3537 survey->noise = dev->stats.link_noise;
3538
3539 return 0;
3540}
3541
3542static const struct ieee80211_ops b43legacy_hw_ops = {
3543 .tx = b43legacy_op_tx,
3544 .conf_tx = b43legacy_op_conf_tx,
3545 .add_interface = b43legacy_op_add_interface,
3546 .remove_interface = b43legacy_op_remove_interface,
3547 .config = b43legacy_op_dev_config,
3548 .bss_info_changed = b43legacy_op_bss_info_changed,
3549 .configure_filter = b43legacy_op_configure_filter,
3550 .get_stats = b43legacy_op_get_stats,
3551 .start = b43legacy_op_start,
3552 .stop = b43legacy_op_stop,
3553 .set_tim = b43legacy_op_beacon_set_tim,
3554 .get_survey = b43legacy_op_get_survey,
3555 .rfkill_poll = b43legacy_rfkill_poll,
3556};
3557
3558/* Hard-reset the chip. Do not call this directly.
3559 * Use b43legacy_controller_restart()
3560 */
3561static void b43legacy_chip_reset(struct work_struct *work)
3562{
3563 struct b43legacy_wldev *dev =
3564 container_of(work, struct b43legacy_wldev, restart_work);
3565 struct b43legacy_wl *wl = dev->wl;
3566 int err = 0;
3567 int prev_status;
3568
3569 mutex_lock(&wl->mutex);
3570
3571 prev_status = b43legacy_status(dev);
3572 /* Bring the device down... */
3573 if (prev_status >= B43legacy_STAT_STARTED)
3574 b43legacy_wireless_core_stop(dev);
3575 if (prev_status >= B43legacy_STAT_INITIALIZED)
3576 b43legacy_wireless_core_exit(dev);
3577
3578 /* ...and up again. */
3579 if (prev_status >= B43legacy_STAT_INITIALIZED) {
3580 err = b43legacy_wireless_core_init(dev);
3581 if (err)
3582 goto out;
3583 }
3584 if (prev_status >= B43legacy_STAT_STARTED) {
3585 err = b43legacy_wireless_core_start(dev);
3586 if (err) {
3587 b43legacy_wireless_core_exit(dev);
3588 goto out;
3589 }
3590 }
3591out:
3592 if (err)
3593 wl->current_dev = NULL; /* Failed to init the dev. */
3594 mutex_unlock(&wl->mutex);
3595 if (err)
3596 b43legacyerr(wl, "Controller restart FAILED\n");
3597 else
3598 b43legacyinfo(wl, "Controller restarted\n");
3599}
3600
3601static int b43legacy_setup_modes(struct b43legacy_wldev *dev,
3602 int have_bphy,
3603 int have_gphy)
3604{
3605 struct ieee80211_hw *hw = dev->wl->hw;
3606 struct b43legacy_phy *phy = &dev->phy;
3607
3608 phy->possible_phymodes = 0;
3609 if (have_bphy) {
3610 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3611 &b43legacy_band_2GHz_BPHY;
3612 phy->possible_phymodes |= B43legacy_PHYMODE_B;
3613 }
3614
3615 if (have_gphy) {
3616 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3617 &b43legacy_band_2GHz_GPHY;
3618 phy->possible_phymodes |= B43legacy_PHYMODE_G;
3619 }
3620
3621 return 0;
3622}
3623
3624static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev)
3625{
3626 /* We release firmware that late to not be required to re-request
3627 * is all the time when we reinit the core. */
3628 b43legacy_release_firmware(dev);
3629}
3630
3631static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev)
3632{
3633 struct b43legacy_wl *wl = dev->wl;
3634 struct ssb_bus *bus = dev->dev->bus;
3635 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL;
3636 int err;
3637 int have_bphy = 0;
3638 int have_gphy = 0;
3639 u32 tmp;
3640
3641 /* Do NOT do any device initialization here.
3642 * Do it in wireless_core_init() instead.
3643 * This function is for gathering basic information about the HW, only.
3644 * Also some structs may be set up here. But most likely you want to
3645 * have that in core_init(), too.
3646 */
3647
3648 err = ssb_bus_powerup(bus, 0);
3649 if (err) {
3650 b43legacyerr(wl, "Bus powerup failed\n");
3651 goto out;
3652 }
3653 /* Get the PHY type. */
3654 if (dev->dev->id.revision >= 5) {
3655 u32 tmshigh;
3656
3657 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3658 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY);
3659 if (!have_gphy)
3660 have_bphy = 1;
3661 } else if (dev->dev->id.revision == 4)
3662 have_gphy = 1;
3663 else
3664 have_bphy = 1;
3665
3666 dev->phy.gmode = (have_gphy || have_bphy);
3667 dev->phy.radio_on = true;
3668 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3669 b43legacy_wireless_core_reset(dev, tmp);
3670
3671 err = b43legacy_phy_versioning(dev);
3672 if (err)
3673 goto err_powerdown;
3674 /* Check if this device supports multiband. */
3675 if (!pdev ||
3676 (pdev->device != 0x4312 &&
3677 pdev->device != 0x4319 &&
3678 pdev->device != 0x4324)) {
3679 /* No multiband support. */
3680 have_bphy = 0;
3681 have_gphy = 0;
3682 switch (dev->phy.type) {
3683 case B43legacy_PHYTYPE_B:
3684 have_bphy = 1;
3685 break;
3686 case B43legacy_PHYTYPE_G:
3687 have_gphy = 1;
3688 break;
3689 default:
3690 B43legacy_BUG_ON(1);
3691 }
3692 }
3693 dev->phy.gmode = (have_gphy || have_bphy);
3694 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0;
3695 b43legacy_wireless_core_reset(dev, tmp);
3696
3697 err = b43legacy_validate_chipaccess(dev);
3698 if (err)
3699 goto err_powerdown;
3700 err = b43legacy_setup_modes(dev, have_bphy, have_gphy);
3701 if (err)
3702 goto err_powerdown;
3703
3704 /* Now set some default "current_dev" */
3705 if (!wl->current_dev)
3706 wl->current_dev = dev;
3707 INIT_WORK(&dev->restart_work, b43legacy_chip_reset);
3708
3709 b43legacy_radio_turn_off(dev, 1);
3710 b43legacy_switch_analog(dev, 0);
3711 ssb_device_disable(dev->dev, 0);
3712 ssb_bus_may_powerdown(bus);
3713
3714out:
3715 return err;
3716
3717err_powerdown:
3718 ssb_bus_may_powerdown(bus);
3719 return err;
3720}
3721
3722static void b43legacy_one_core_detach(struct ssb_device *dev)
3723{
3724 struct b43legacy_wldev *wldev;
3725 struct b43legacy_wl *wl;
3726
3727 /* Do not cancel ieee80211-workqueue based work here.
3728 * See comment in b43legacy_remove(). */
3729
3730 wldev = ssb_get_drvdata(dev);
3731 wl = wldev->wl;
3732 b43legacy_debugfs_remove_device(wldev);
3733 b43legacy_wireless_core_detach(wldev);
3734 list_del(&wldev->list);
3735 wl->nr_devs--;
3736 ssb_set_drvdata(dev, NULL);
3737 kfree(wldev);
3738}
3739
3740static int b43legacy_one_core_attach(struct ssb_device *dev,
3741 struct b43legacy_wl *wl)
3742{
3743 struct b43legacy_wldev *wldev;
3744 int err = -ENOMEM;
3745
3746 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3747 if (!wldev)
3748 goto out;
3749
3750 wldev->dev = dev;
3751 wldev->wl = wl;
3752 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
3753 wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3754 tasklet_init(&wldev->isr_tasklet,
3755 (void (*)(unsigned long))b43legacy_interrupt_tasklet,
3756 (unsigned long)wldev);
3757 if (modparam_pio)
3758 wldev->__using_pio = true;
3759 INIT_LIST_HEAD(&wldev->list);
3760
3761 err = b43legacy_wireless_core_attach(wldev);
3762 if (err)
3763 goto err_kfree_wldev;
3764
3765 list_add(&wldev->list, &wl->devlist);
3766 wl->nr_devs++;
3767 ssb_set_drvdata(dev, wldev);
3768 b43legacy_debugfs_add_device(wldev);
3769out:
3770 return err;
3771
3772err_kfree_wldev:
3773 kfree(wldev);
3774 return err;
3775}
3776
3777static void b43legacy_sprom_fixup(struct ssb_bus *bus)
3778{
3779 /* boardflags workarounds */
3780 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3781 bus->boardinfo.type == 0x4E &&
3782 bus->sprom.board_rev > 0x40)
3783 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL;
3784}
3785
3786static void b43legacy_wireless_exit(struct ssb_device *dev,
3787 struct b43legacy_wl *wl)
3788{
3789 struct ieee80211_hw *hw = wl->hw;
3790
3791 ssb_set_devtypedata(dev, NULL);
3792 ieee80211_free_hw(hw);
3793}
3794
3795static int b43legacy_wireless_init(struct ssb_device *dev)
3796{
3797 struct ssb_sprom *sprom = &dev->bus->sprom;
3798 struct ieee80211_hw *hw;
3799 struct b43legacy_wl *wl;
3800 int err = -ENOMEM;
3801 int queue_num;
3802
3803 b43legacy_sprom_fixup(dev->bus);
3804
3805 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops);
3806 if (!hw) {
3807 b43legacyerr(NULL, "Could not allocate ieee80211 device\n");
3808 goto out;
3809 }
3810
3811 /* fill hw info */
3812 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
3813 IEEE80211_HW_SIGNAL_DBM;
3814 hw->wiphy->interface_modes =
3815 BIT(NL80211_IFTYPE_AP) |
3816 BIT(NL80211_IFTYPE_STATION) |
3817 BIT(NL80211_IFTYPE_WDS) |
3818 BIT(NL80211_IFTYPE_ADHOC);
3819 hw->queues = 1; /* FIXME: hardware has more queues */
3820 hw->max_rates = 2;
3821 SET_IEEE80211_DEV(hw, dev->dev);
3822 if (is_valid_ether_addr(sprom->et1mac))
3823 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3824 else
3825 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3826
3827 /* Get and initialize struct b43legacy_wl */
3828 wl = hw_to_b43legacy_wl(hw);
3829 memset(wl, 0, sizeof(*wl));
3830 wl->hw = hw;
3831 spin_lock_init(&wl->irq_lock);
3832 spin_lock_init(&wl->leds_lock);
3833 mutex_init(&wl->mutex);
3834 INIT_LIST_HEAD(&wl->devlist);
3835 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work);
3836 INIT_WORK(&wl->tx_work, b43legacy_tx_work);
3837
3838 /* Initialize queues and flags. */
3839 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) {
3840 skb_queue_head_init(&wl->tx_queue[queue_num]);
3841 wl->tx_queue_stopped[queue_num] = 0;
3842 }
3843
3844 ssb_set_devtypedata(dev, wl);
3845 b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n",
3846 dev->bus->chip_id, dev->id.revision);
3847 err = 0;
3848out:
3849 return err;
3850}
3851
3852static int b43legacy_probe(struct ssb_device *dev,
3853 const struct ssb_device_id *id)
3854{
3855 struct b43legacy_wl *wl;
3856 int err;
3857 int first = 0;
3858
3859 wl = ssb_get_devtypedata(dev);
3860 if (!wl) {
3861 /* Probing the first core - setup common struct b43legacy_wl */
3862 first = 1;
3863 err = b43legacy_wireless_init(dev);
3864 if (err)
3865 goto out;
3866 wl = ssb_get_devtypedata(dev);
3867 B43legacy_WARN_ON(!wl);
3868 }
3869 err = b43legacy_one_core_attach(dev, wl);
3870 if (err)
3871 goto err_wireless_exit;
3872
3873 /* setup and start work to load firmware */
3874 INIT_WORK(&wl->firmware_load, b43legacy_request_firmware);
3875 schedule_work(&wl->firmware_load);
3876
3877out:
3878 return err;
3879
3880err_wireless_exit:
3881 if (first)
3882 b43legacy_wireless_exit(dev, wl);
3883 return err;
3884}
3885
3886static void b43legacy_remove(struct ssb_device *dev)
3887{
3888 struct b43legacy_wl *wl = ssb_get_devtypedata(dev);
3889 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3890
3891 /* We must cancel any work here before unregistering from ieee80211,
3892 * as the ieee80211 unreg will destroy the workqueue. */
3893 cancel_work_sync(&wldev->restart_work);
3894 cancel_work_sync(&wl->firmware_load);
3895
3896 B43legacy_WARN_ON(!wl);
3897 if (!wldev->fw.ucode)
3898 return; /* NULL if fw never loaded */
3899 if (wl->current_dev == wldev)
3900 ieee80211_unregister_hw(wl->hw);
3901
3902 b43legacy_one_core_detach(dev);
3903
3904 if (list_empty(&wl->devlist))
3905 /* Last core on the chip unregistered.
3906 * We can destroy common struct b43legacy_wl.
3907 */
3908 b43legacy_wireless_exit(dev, wl);
3909}
3910
3911/* Perform a hardware reset. This can be called from any context. */
3912void b43legacy_controller_restart(struct b43legacy_wldev *dev,
3913 const char *reason)
3914{
3915 /* Must avoid requeueing, if we are in shutdown. */
3916 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
3917 return;
3918 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason);
3919 ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
3920}
3921
3922#ifdef CONFIG_PM
3923
3924static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state)
3925{
3926 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3927 struct b43legacy_wl *wl = wldev->wl;
3928
3929 b43legacydbg(wl, "Suspending...\n");
3930
3931 mutex_lock(&wl->mutex);
3932 wldev->suspend_init_status = b43legacy_status(wldev);
3933 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED)
3934 b43legacy_wireless_core_stop(wldev);
3935 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED)
3936 b43legacy_wireless_core_exit(wldev);
3937 mutex_unlock(&wl->mutex);
3938
3939 b43legacydbg(wl, "Device suspended.\n");
3940
3941 return 0;
3942}
3943
3944static int b43legacy_resume(struct ssb_device *dev)
3945{
3946 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev);
3947 struct b43legacy_wl *wl = wldev->wl;
3948 int err = 0;
3949
3950 b43legacydbg(wl, "Resuming...\n");
3951
3952 mutex_lock(&wl->mutex);
3953 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) {
3954 err = b43legacy_wireless_core_init(wldev);
3955 if (err) {
3956 b43legacyerr(wl, "Resume failed at core init\n");
3957 goto out;
3958 }
3959 }
3960 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) {
3961 err = b43legacy_wireless_core_start(wldev);
3962 if (err) {
3963 b43legacy_wireless_core_exit(wldev);
3964 b43legacyerr(wl, "Resume failed at core start\n");
3965 goto out;
3966 }
3967 }
3968
3969 b43legacydbg(wl, "Device resumed.\n");
3970out:
3971 mutex_unlock(&wl->mutex);
3972 return err;
3973}
3974
3975#else /* CONFIG_PM */
3976# define b43legacy_suspend NULL
3977# define b43legacy_resume NULL
3978#endif /* CONFIG_PM */
3979
3980static struct ssb_driver b43legacy_ssb_driver = {
3981 .name = KBUILD_MODNAME,
3982 .id_table = b43legacy_ssb_tbl,
3983 .probe = b43legacy_probe,
3984 .remove = b43legacy_remove,
3985 .suspend = b43legacy_suspend,
3986 .resume = b43legacy_resume,
3987};
3988
3989static void b43legacy_print_driverinfo(void)
3990{
3991 const char *feat_pci = "", *feat_leds = "",
3992 *feat_pio = "", *feat_dma = "";
3993
3994#ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT
3995 feat_pci = "P";
3996#endif
3997#ifdef CONFIG_B43LEGACY_LEDS
3998 feat_leds = "L";
3999#endif
4000#ifdef CONFIG_B43LEGACY_PIO
4001 feat_pio = "I";
4002#endif
4003#ifdef CONFIG_B43LEGACY_DMA
4004 feat_dma = "D";
4005#endif
4006 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded "
4007 "[ Features: %s%s%s%s ]\n",
4008 feat_pci, feat_leds, feat_pio, feat_dma);
4009}
4010
4011static int __init b43legacy_init(void)
4012{
4013 int err;
4014
4015 b43legacy_debugfs_init();
4016
4017 err = ssb_driver_register(&b43legacy_ssb_driver);
4018 if (err)
4019 goto err_dfs_exit;
4020
4021 b43legacy_print_driverinfo();
4022
4023 return err;
4024
4025err_dfs_exit:
4026 b43legacy_debugfs_exit();
4027 return err;
4028}
4029
4030static void __exit b43legacy_exit(void)
4031{
4032 ssb_driver_unregister(&b43legacy_ssb_driver);
4033 b43legacy_debugfs_exit();
4034}
4035
4036module_init(b43legacy_init)
4037module_exit(b43legacy_exit)