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Linux/drivers/net/wireless/b43legacy/main.c

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

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