drivers/net/wireless/b43/main.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
   6   Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
   7   Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
   8   Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
   9   Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
  10
  11   Some parts of the code in this file are derived from the ipw2200
  12   driver  Copyright(c) 2003 - 2004 Intel Corporation.
  13
  14   This program is free software; you can redistribute it and/or modify
  15   it under the terms of the GNU General Public License as published by
  16   the Free Software Foundation; either version 2 of the License, or
  17   (at your option) any later version.
  18
  19   This program is distributed in the hope that it will be useful,
  20   but WITHOUT ANY WARRANTY; without even the implied warranty of
  21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22   GNU General Public License for more details.
  23
  24   You should have received a copy of the GNU General Public License
  25   along with this program; see the file COPYING.  If not, write to
  26   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  27   Boston, MA 02110-1301, USA.
  28
  29 */
  30
  31 #include <linux/delay.h>
  32 #include <linux/init.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/if_arp.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/version.h>
  37 #include <linux/firmware.h>
  38 #include <linux/wireless.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/skbuff.h>
  41 #include <linux/io.h>
  42 #include <linux/dma-mapping.h>
  43 #include <asm/unaligned.h>
  44
  45 #include "b43.h"
  46 #include "main.h"
  47 #include "debugfs.h"
  48 #include "phy.h"
  49 #include "nphy.h"
  50 #include "dma.h"
  51 #include "pio.h"
  52 #include "sysfs.h"
  53 #include "xmit.h"
  54 #include "lo.h"
  55 #include "pcmcia.h"
  56
  57 MODULE_DESCRIPTION("Broadcom B43 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(B43_SUPPORTED_FIRMWARE_ID);
  64
  65
  66 static int modparam_bad_frames_preempt;
  67 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
  68 MODULE_PARM_DESC(bad_frames_preempt,
  69                  "enable(1) / disable(0) Bad Frames Preemption");
  70
  71 static char modparam_fwpostfix[16];
  72 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
  73 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
  74
  75 static int modparam_hwpctl;
  76 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
  77 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
  78
  79 static int modparam_nohwcrypt;
  80 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
  81 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  82
  83 int b43_modparam_qos = 1;
  84 module_param_named(qos, b43_modparam_qos, int, 0444);
  85 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
  86
  87 static int modparam_btcoex = 1;
  88 module_param_named(btcoex, modparam_btcoex, int, 0444);
  89 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistance (default on)");
  90
  91
  92 static const struct ssb_device_id b43_ssb_tbl[] = {
  93         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
  94         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
  95         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
  96         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
  97         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
  98         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
  99         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
 100         SSB_DEVTABLE_END
 101 };
 102
 103 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
 104
 105 /* Channel and ratetables are shared for all devices.
 106  * They can't be const, because ieee80211 puts some precalculated
 107  * data in there. This data is the same for all devices, so we don't
 108  * get concurrency issues */
 109 #define RATETAB_ENT(_rateid, _flags) \
 110         {                                                               \
 111                 .bitrate        = B43_RATE_TO_BASE100KBPS(_rateid),     \
 112                 .hw_value       = (_rateid),                            \
 113                 .flags          = (_flags),                             \
 114         }
 115
 116 /*
 117  * NOTE: When changing this, sync with xmit.c's
 118  *       b43_plcp_get_bitrate_idx_* functions!
 119  */
 120 static struct ieee80211_rate __b43_ratetable[] = {
 121         RATETAB_ENT(B43_CCK_RATE_1MB, 0),
 122         RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
 123         RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
 124         RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
 125         RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
 126         RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
 127         RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
 128         RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
 129         RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
 130         RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
 131         RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
 132         RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
 133 };
 134
 135 #define b43_a_ratetable         (__b43_ratetable + 4)
 136 #define b43_a_ratetable_size    8
 137 #define b43_b_ratetable         (__b43_ratetable + 0)
 138 #define b43_b_ratetable_size    4
 139 #define b43_g_ratetable         (__b43_ratetable + 0)
 140 #define b43_g_ratetable_size    12
 141
 142 #define CHAN4G(_channel, _freq, _flags) {                       \
 143         .band                   = IEEE80211_BAND_2GHZ,          \
 144         .center_freq            = (_freq),                      \
 145         .hw_value               = (_channel),                   \
 146         .flags                  = (_flags),                     \
 147         .max_antenna_gain       = 0,                            \
 148         .max_power              = 30,                           \
 149 }
 150 static struct ieee80211_channel b43_2ghz_chantable[] = {
 151         CHAN4G(1, 2412, 0),
 152         CHAN4G(2, 2417, 0),
 153         CHAN4G(3, 2422, 0),
 154         CHAN4G(4, 2427, 0),
 155         CHAN4G(5, 2432, 0),
 156         CHAN4G(6, 2437, 0),
 157         CHAN4G(7, 2442, 0),
 158         CHAN4G(8, 2447, 0),
 159         CHAN4G(9, 2452, 0),
 160         CHAN4G(10, 2457, 0),
 161         CHAN4G(11, 2462, 0),
 162         CHAN4G(12, 2467, 0),
 163         CHAN4G(13, 2472, 0),
 164         CHAN4G(14, 2484, 0),
 165 };
 166 #undef CHAN4G
 167
 168 #define CHAN5G(_channel, _flags) {                              \
 169         .band                   = IEEE80211_BAND_5GHZ,          \
 170         .center_freq            = 5000 + (5 * (_channel)),      \
 171         .hw_value               = (_channel),                   \
 172         .flags                  = (_flags),                     \
 173         .max_antenna_gain       = 0,                            \
 174         .max_power              = 30,                           \
 175 }
 176 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
 177         CHAN5G(32, 0),          CHAN5G(34, 0),
 178         CHAN5G(36, 0),          CHAN5G(38, 0),
 179         CHAN5G(40, 0),          CHAN5G(42, 0),
 180         CHAN5G(44, 0),          CHAN5G(46, 0),
 181         CHAN5G(48, 0),          CHAN5G(50, 0),
 182         CHAN5G(52, 0),          CHAN5G(54, 0),
 183         CHAN5G(56, 0),          CHAN5G(58, 0),
 184         CHAN5G(60, 0),          CHAN5G(62, 0),
 185         CHAN5G(64, 0),          CHAN5G(66, 0),
 186         CHAN5G(68, 0),          CHAN5G(70, 0),
 187         CHAN5G(72, 0),          CHAN5G(74, 0),
 188         CHAN5G(76, 0),          CHAN5G(78, 0),
 189         CHAN5G(80, 0),          CHAN5G(82, 0),
 190         CHAN5G(84, 0),          CHAN5G(86, 0),
 191         CHAN5G(88, 0),          CHAN5G(90, 0),
 192         CHAN5G(92, 0),          CHAN5G(94, 0),
 193         CHAN5G(96, 0),          CHAN5G(98, 0),
 194         CHAN5G(100, 0),         CHAN5G(102, 0),
 195         CHAN5G(104, 0),         CHAN5G(106, 0),
 196         CHAN5G(108, 0),         CHAN5G(110, 0),
 197         CHAN5G(112, 0),         CHAN5G(114, 0),
 198         CHAN5G(116, 0),         CHAN5G(118, 0),
 199         CHAN5G(120, 0),         CHAN5G(122, 0),
 200         CHAN5G(124, 0),         CHAN5G(126, 0),
 201         CHAN5G(128, 0),         CHAN5G(130, 0),
 202         CHAN5G(132, 0),         CHAN5G(134, 0),
 203         CHAN5G(136, 0),         CHAN5G(138, 0),
 204         CHAN5G(140, 0),         CHAN5G(142, 0),
 205         CHAN5G(144, 0),         CHAN5G(145, 0),
 206         CHAN5G(146, 0),         CHAN5G(147, 0),
 207         CHAN5G(148, 0),         CHAN5G(149, 0),
 208         CHAN5G(150, 0),         CHAN5G(151, 0),
 209         CHAN5G(152, 0),         CHAN5G(153, 0),
 210         CHAN5G(154, 0),         CHAN5G(155, 0),
 211         CHAN5G(156, 0),         CHAN5G(157, 0),
 212         CHAN5G(158, 0),         CHAN5G(159, 0),
 213         CHAN5G(160, 0),         CHAN5G(161, 0),
 214         CHAN5G(162, 0),         CHAN5G(163, 0),
 215         CHAN5G(164, 0),         CHAN5G(165, 0),
 216         CHAN5G(166, 0),         CHAN5G(168, 0),
 217         CHAN5G(170, 0),         CHAN5G(172, 0),
 218         CHAN5G(174, 0),         CHAN5G(176, 0),
 219         CHAN5G(178, 0),         CHAN5G(180, 0),
 220         CHAN5G(182, 0),         CHAN5G(184, 0),
 221         CHAN5G(186, 0),         CHAN5G(188, 0),
 222         CHAN5G(190, 0),         CHAN5G(192, 0),
 223         CHAN5G(194, 0),         CHAN5G(196, 0),
 224         CHAN5G(198, 0),         CHAN5G(200, 0),
 225         CHAN5G(202, 0),         CHAN5G(204, 0),
 226         CHAN5G(206, 0),         CHAN5G(208, 0),
 227         CHAN5G(210, 0),         CHAN5G(212, 0),
 228         CHAN5G(214, 0),         CHAN5G(216, 0),
 229         CHAN5G(218, 0),         CHAN5G(220, 0),
 230         CHAN5G(222, 0),         CHAN5G(224, 0),
 231         CHAN5G(226, 0),         CHAN5G(228, 0),
 232 };
 233
 234 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
 235         CHAN5G(34, 0),          CHAN5G(36, 0),
 236         CHAN5G(38, 0),          CHAN5G(40, 0),
 237         CHAN5G(42, 0),          CHAN5G(44, 0),
 238         CHAN5G(46, 0),          CHAN5G(48, 0),
 239         CHAN5G(52, 0),          CHAN5G(56, 0),
 240         CHAN5G(60, 0),          CHAN5G(64, 0),
 241         CHAN5G(100, 0),         CHAN5G(104, 0),
 242         CHAN5G(108, 0),         CHAN5G(112, 0),
 243         CHAN5G(116, 0),         CHAN5G(120, 0),
 244         CHAN5G(124, 0),         CHAN5G(128, 0),
 245         CHAN5G(132, 0),         CHAN5G(136, 0),
 246         CHAN5G(140, 0),         CHAN5G(149, 0),
 247         CHAN5G(153, 0),         CHAN5G(157, 0),
 248         CHAN5G(161, 0),         CHAN5G(165, 0),
 249         CHAN5G(184, 0),         CHAN5G(188, 0),
 250         CHAN5G(192, 0),         CHAN5G(196, 0),
 251         CHAN5G(200, 0),         CHAN5G(204, 0),
 252         CHAN5G(208, 0),         CHAN5G(212, 0),
 253         CHAN5G(216, 0),
 254 };
 255 #undef CHAN5G
 256
 257 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
 258         .band           = IEEE80211_BAND_5GHZ,
 259         .channels       = b43_5ghz_nphy_chantable,
 260         .n_channels     = ARRAY_SIZE(b43_5ghz_nphy_chantable),
 261         .bitrates       = b43_a_ratetable,
 262         .n_bitrates     = b43_a_ratetable_size,
 263 };
 264
 265 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
 266         .band           = IEEE80211_BAND_5GHZ,
 267         .channels       = b43_5ghz_aphy_chantable,
 268         .n_channels     = ARRAY_SIZE(b43_5ghz_aphy_chantable),
 269         .bitrates       = b43_a_ratetable,
 270         .n_bitrates     = b43_a_ratetable_size,
 271 };
 272
 273 static struct ieee80211_supported_band b43_band_2GHz = {
 274         .band           = IEEE80211_BAND_2GHZ,
 275         .channels       = b43_2ghz_chantable,
 276         .n_channels     = ARRAY_SIZE(b43_2ghz_chantable),
 277         .bitrates       = b43_g_ratetable,
 278         .n_bitrates     = b43_g_ratetable_size,
 279 };
 280
 281 static void b43_wireless_core_exit(struct b43_wldev *dev);
 282 static int b43_wireless_core_init(struct b43_wldev *dev);
 283 static void b43_wireless_core_stop(struct b43_wldev *dev);
 284 static int b43_wireless_core_start(struct b43_wldev *dev);
 285
 286 static int b43_ratelimit(struct b43_wl *wl)
 287 {
 288         if (!wl || !wl->current_dev)
 289                 return 1;
 290         if (b43_status(wl->current_dev) < B43_STAT_STARTED)
 291                 return 1;
 292         /* We are up and running.
 293          * Ratelimit the messages to avoid DoS over the net. */
 294         return net_ratelimit();
 295 }
 296
 297 void b43info(struct b43_wl *wl, const char *fmt, ...)
 298 {
 299         va_list args;
 300
 301         if (!b43_ratelimit(wl))
 302                 return;
 303         va_start(args, fmt);
 304         printk(KERN_INFO "b43-%s: ",
 305                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 306         vprintk(fmt, args);
 307         va_end(args);
 308 }
 309
 310 void b43err(struct b43_wl *wl, const char *fmt, ...)
 311 {
 312         va_list args;
 313
 314         if (!b43_ratelimit(wl))
 315                 return;
 316         va_start(args, fmt);
 317         printk(KERN_ERR "b43-%s ERROR: ",
 318                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 319         vprintk(fmt, args);
 320         va_end(args);
 321 }
 322
 323 void b43warn(struct b43_wl *wl, const char *fmt, ...)
 324 {
 325         va_list args;
 326
 327         if (!b43_ratelimit(wl))
 328                 return;
 329         va_start(args, fmt);
 330         printk(KERN_WARNING "b43-%s warning: ",
 331                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 332         vprintk(fmt, args);
 333         va_end(args);
 334 }
 335
 336 #if B43_DEBUG
 337 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
 338 {
 339         va_list args;
 340
 341         va_start(args, fmt);
 342         printk(KERN_DEBUG "b43-%s debug: ",
 343                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 344         vprintk(fmt, args);
 345         va_end(args);
 346 }
 347 #endif /* DEBUG */
 348
 349 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
 350 {
 351         u32 macctl;
 352
 353         B43_WARN_ON(offset % 4 != 0);
 354
 355         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 356         if (macctl & B43_MACCTL_BE)
 357                 val = swab32(val);
 358
 359         b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
 360         mmiowb();
 361         b43_write32(dev, B43_MMIO_RAM_DATA, val);
 362 }
 363
 364 static inline void b43_shm_control_word(struct b43_wldev *dev,
 365                                         u16 routing, u16 offset)
 366 {
 367         u32 control;
 368
 369         /* "offset" is the WORD offset. */
 370         control = routing;
 371         control <<= 16;
 372         control |= offset;
 373         b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
 374 }
 375
 376 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 377 {
 378         struct b43_wl *wl = dev->wl;
 379         unsigned long flags;
 380         u32 ret;
 381
 382         spin_lock_irqsave(&wl->shm_lock, flags);
 383         if (routing == B43_SHM_SHARED) {
 384                 B43_WARN_ON(offset & 0x0001);
 385                 if (offset & 0x0003) {
 386                         /* Unaligned access */
 387                         b43_shm_control_word(dev, routing, offset >> 2);
 388                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 389                         ret <<= 16;
 390                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 391                         ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
 392
 393                         goto out;
 394                 }
 395                 offset >>= 2;
 396         }
 397         b43_shm_control_word(dev, routing, offset);
 398         ret = b43_read32(dev, B43_MMIO_SHM_DATA);
 399 out:
 400         spin_unlock_irqrestore(&wl->shm_lock, flags);
 401
 402         return ret;
 403 }
 404
 405 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
 406 {
 407         struct b43_wl *wl = dev->wl;
 408         unsigned long flags;
 409         u16 ret;
 410
 411         spin_lock_irqsave(&wl->shm_lock, flags);
 412         if (routing == B43_SHM_SHARED) {
 413                 B43_WARN_ON(offset & 0x0001);
 414                 if (offset & 0x0003) {
 415                         /* Unaligned access */
 416                         b43_shm_control_word(dev, routing, offset >> 2);
 417                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 418
 419                         goto out;
 420                 }
 421                 offset >>= 2;
 422         }
 423         b43_shm_control_word(dev, routing, offset);
 424         ret = b43_read16(dev, B43_MMIO_SHM_DATA);
 425 out:
 426         spin_unlock_irqrestore(&wl->shm_lock, flags);
 427
 428         return ret;
 429 }
 430
 431 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 432 {
 433         struct b43_wl *wl = dev->wl;
 434         unsigned long flags;
 435
 436         spin_lock_irqsave(&wl->shm_lock, flags);
 437         if (routing == B43_SHM_SHARED) {
 438                 B43_WARN_ON(offset & 0x0001);
 439                 if (offset & 0x0003) {
 440                         /* Unaligned access */
 441                         b43_shm_control_word(dev, routing, offset >> 2);
 442                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
 443                                     (value >> 16) & 0xffff);
 444                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 445                         b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
 446                         goto out;
 447                 }
 448                 offset >>= 2;
 449         }
 450         b43_shm_control_word(dev, routing, offset);
 451         b43_write32(dev, B43_MMIO_SHM_DATA, value);
 452 out:
 453         spin_unlock_irqrestore(&wl->shm_lock, flags);
 454 }
 455
 456 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 457 {
 458         struct b43_wl *wl = dev->wl;
 459         unsigned long flags;
 460
 461         spin_lock_irqsave(&wl->shm_lock, flags);
 462         if (routing == B43_SHM_SHARED) {
 463                 B43_WARN_ON(offset & 0x0001);
 464                 if (offset & 0x0003) {
 465                         /* Unaligned access */
 466                         b43_shm_control_word(dev, routing, offset >> 2);
 467                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
 468                         goto out;
 469                 }
 470                 offset >>= 2;
 471         }
 472         b43_shm_control_word(dev, routing, offset);
 473         b43_write16(dev, B43_MMIO_SHM_DATA, value);
 474 out:
 475         spin_unlock_irqrestore(&wl->shm_lock, flags);
 476 }
 477
 478 /* Read HostFlags */
 479 u64 b43_hf_read(struct b43_wldev * dev)
 480 {
 481         u64 ret;
 482
 483         ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
 484         ret <<= 16;
 485         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
 486         ret <<= 16;
 487         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
 488
 489         return ret;
 490 }
 491
 492 /* Write HostFlags */
 493 void b43_hf_write(struct b43_wldev *dev, u64 value)
 494 {
 495         u16 lo, mi, hi;
 496
 497         lo = (value & 0x00000000FFFFULL);
 498         mi = (value & 0x0000FFFF0000ULL) >> 16;
 499         hi = (value & 0xFFFF00000000ULL) >> 32;
 500         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
 501         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
 502         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
 503 }
 504
 505 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
 506 {
 507         /* We need to be careful. As we read the TSF from multiple
 508          * registers, we should take care of register overflows.
 509          * In theory, the whole tsf read process should be atomic.
 510          * We try to be atomic here, by restaring the read process,
 511          * if any of the high registers changed (overflew).
 512          */
 513         if (dev->dev->id.revision >= 3) {
 514                 u32 low, high, high2;
 515
 516                 do {
 517                         high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 518                         low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
 519                         high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 520                 } while (unlikely(high != high2));
 521
 522                 *tsf = high;
 523                 *tsf <<= 32;
 524                 *tsf |= low;
 525         } else {
 526                 u64 tmp;
 527                 u16 v0, v1, v2, v3;
 528                 u16 test1, test2, test3;
 529
 530                 do {
 531                         v3 = b43_read16(dev, B43_MMIO_TSF_3);
 532                         v2 = b43_read16(dev, B43_MMIO_TSF_2);
 533                         v1 = b43_read16(dev, B43_MMIO_TSF_1);
 534                         v0 = b43_read16(dev, B43_MMIO_TSF_0);
 535
 536                         test3 = b43_read16(dev, B43_MMIO_TSF_3);
 537                         test2 = b43_read16(dev, B43_MMIO_TSF_2);
 538                         test1 = b43_read16(dev, B43_MMIO_TSF_1);
 539                 } while (v3 != test3 || v2 != test2 || v1 != test1);
 540
 541                 *tsf = v3;
 542                 *tsf <<= 48;
 543                 tmp = v2;
 544                 tmp <<= 32;
 545                 *tsf |= tmp;
 546                 tmp = v1;
 547                 tmp <<= 16;
 548                 *tsf |= tmp;
 549                 *tsf |= v0;
 550         }
 551 }
 552
 553 static void b43_time_lock(struct b43_wldev *dev)
 554 {
 555         u32 macctl;
 556
 557         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 558         macctl |= B43_MACCTL_TBTTHOLD;
 559         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 560         /* Commit the write */
 561         b43_read32(dev, B43_MMIO_MACCTL);
 562 }
 563
 564 static void b43_time_unlock(struct b43_wldev *dev)
 565 {
 566         u32 macctl;
 567
 568         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 569         macctl &= ~B43_MACCTL_TBTTHOLD;
 570         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 571         /* Commit the write */
 572         b43_read32(dev, B43_MMIO_MACCTL);
 573 }
 574
 575 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
 576 {
 577         /* Be careful with the in-progress timer.
 578          * First zero out the low register, so we have a full
 579          * register-overflow duration to complete the operation.
 580          */
 581         if (dev->dev->id.revision >= 3) {
 582                 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
 583                 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
 584
 585                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
 586                 mmiowb();
 587                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
 588                 mmiowb();
 589                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
 590         } else {
 591                 u16 v0 = (tsf & 0x000000000000FFFFULL);
 592                 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
 593                 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
 594                 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
 595
 596                 b43_write16(dev, B43_MMIO_TSF_0, 0);
 597                 mmiowb();
 598                 b43_write16(dev, B43_MMIO_TSF_3, v3);
 599                 mmiowb();
 600                 b43_write16(dev, B43_MMIO_TSF_2, v2);
 601                 mmiowb();
 602                 b43_write16(dev, B43_MMIO_TSF_1, v1);
 603                 mmiowb();
 604                 b43_write16(dev, B43_MMIO_TSF_0, v0);
 605         }
 606 }
 607
 608 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
 609 {
 610         b43_time_lock(dev);
 611         b43_tsf_write_locked(dev, tsf);
 612         b43_time_unlock(dev);
 613 }
 614
 615 static
 616 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
 617 {
 618         static const u8 zero_addr[ETH_ALEN] = { 0 };
 619         u16 data;
 620
 621         if (!mac)
 622                 mac = zero_addr;
 623
 624         offset |= 0x0020;
 625         b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
 626
 627         data = mac[0];
 628         data |= mac[1] << 8;
 629         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 630         data = mac[2];
 631         data |= mac[3] << 8;
 632         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 633         data = mac[4];
 634         data |= mac[5] << 8;
 635         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 636 }
 637
 638 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
 639 {
 640         const u8 *mac;
 641         const u8 *bssid;
 642         u8 mac_bssid[ETH_ALEN * 2];
 643         int i;
 644         u32 tmp;
 645
 646         bssid = dev->wl->bssid;
 647         mac = dev->wl->mac_addr;
 648
 649         b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
 650
 651         memcpy(mac_bssid, mac, ETH_ALEN);
 652         memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
 653
 654         /* Write our MAC address and BSSID to template ram */
 655         for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
 656                 tmp = (u32) (mac_bssid[i + 0]);
 657                 tmp |= (u32) (mac_bssid[i + 1]) << 8;
 658                 tmp |= (u32) (mac_bssid[i + 2]) << 16;
 659                 tmp |= (u32) (mac_bssid[i + 3]) << 24;
 660                 b43_ram_write(dev, 0x20 + i, tmp);
 661         }
 662 }
 663
 664 static void b43_upload_card_macaddress(struct b43_wldev *dev)
 665 {
 666         b43_write_mac_bssid_templates(dev);
 667         b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
 668 }
 669
 670 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
 671 {
 672         /* slot_time is in usec. */
 673         if (dev->phy.type != B43_PHYTYPE_G)
 674                 return;
 675         b43_write16(dev, 0x684, 510 + slot_time);
 676         b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
 677 }
 678
 679 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
 680 {
 681         b43_set_slot_time(dev, 9);
 682         dev->short_slot = 1;
 683 }
 684
 685 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
 686 {
 687         b43_set_slot_time(dev, 20);
 688         dev->short_slot = 0;
 689 }
 690
 691 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
 692  * Returns the _previously_ enabled IRQ mask.
 693  */
 694 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
 695 {
 696         u32 old_mask;
 697
 698         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 699         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
 700
 701         return old_mask;
 702 }
 703
 704 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
 705  * Returns the _previously_ enabled IRQ mask.
 706  */
 707 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
 708 {
 709         u32 old_mask;
 710
 711         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 712         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
 713
 714         return old_mask;
 715 }
 716
 717 /* Synchronize IRQ top- and bottom-half.
 718  * IRQs must be masked before calling this.
 719  * This must not be called with the irq_lock held.
 720  */
 721 static void b43_synchronize_irq(struct b43_wldev *dev)
 722 {
 723         synchronize_irq(dev->dev->irq);
 724         tasklet_kill(&dev->isr_tasklet);
 725 }
 726
 727 /* DummyTransmission function, as documented on
 728  * http://bcm-specs.sipsolutions.net/DummyTransmission
 729  */
 730 void b43_dummy_transmission(struct b43_wldev *dev)
 731 {
 732         struct b43_wl *wl = dev->wl;
 733         struct b43_phy *phy = &dev->phy;
 734         unsigned int i, max_loop;
 735         u16 value;
 736         u32 buffer[5] = {
 737                 0x00000000,
 738                 0x00D40000,
 739                 0x00000000,
 740                 0x01000000,
 741                 0x00000000,
 742         };
 743
 744         switch (phy->type) {
 745         case B43_PHYTYPE_A:
 746                 max_loop = 0x1E;
 747                 buffer[0] = 0x000201CC;
 748                 break;
 749         case B43_PHYTYPE_B:
 750         case B43_PHYTYPE_G:
 751                 max_loop = 0xFA;
 752                 buffer[0] = 0x000B846E;
 753                 break;
 754         default:
 755                 B43_WARN_ON(1);
 756                 return;
 757         }
 758
 759         spin_lock_irq(&wl->irq_lock);
 760         write_lock(&wl->tx_lock);
 761
 762         for (i = 0; i < 5; i++)
 763                 b43_ram_write(dev, i * 4, buffer[i]);
 764
 765         /* Commit writes */
 766         b43_read32(dev, B43_MMIO_MACCTL);
 767
 768         b43_write16(dev, 0x0568, 0x0000);
 769         b43_write16(dev, 0x07C0, 0x0000);
 770         value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
 771         b43_write16(dev, 0x050C, value);
 772         b43_write16(dev, 0x0508, 0x0000);
 773         b43_write16(dev, 0x050A, 0x0000);
 774         b43_write16(dev, 0x054C, 0x0000);
 775         b43_write16(dev, 0x056A, 0x0014);
 776         b43_write16(dev, 0x0568, 0x0826);
 777         b43_write16(dev, 0x0500, 0x0000);
 778         b43_write16(dev, 0x0502, 0x0030);
 779
 780         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 781                 b43_radio_write16(dev, 0x0051, 0x0017);
 782         for (i = 0x00; i < max_loop; i++) {
 783                 value = b43_read16(dev, 0x050E);
 784                 if (value & 0x0080)
 785                         break;
 786                 udelay(10);
 787         }
 788         for (i = 0x00; i < 0x0A; i++) {
 789                 value = b43_read16(dev, 0x050E);
 790                 if (value & 0x0400)
 791                         break;
 792                 udelay(10);
 793         }
 794         for (i = 0x00; i < 0x0A; i++) {
 795                 value = b43_read16(dev, 0x0690);
 796                 if (!(value & 0x0100))
 797                         break;
 798                 udelay(10);
 799         }
 800         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 801                 b43_radio_write16(dev, 0x0051, 0x0037);
 802
 803         write_unlock(&wl->tx_lock);
 804         spin_unlock_irq(&wl->irq_lock);
 805 }
 806
 807 static void key_write(struct b43_wldev *dev,
 808                       u8 index, u8 algorithm, const u8 * key)
 809 {
 810         unsigned int i;
 811         u32 offset;
 812         u16 value;
 813         u16 kidx;
 814
 815         /* Key index/algo block */
 816         kidx = b43_kidx_to_fw(dev, index);
 817         value = ((kidx << 4) | algorithm);
 818         b43_shm_write16(dev, B43_SHM_SHARED,
 819                         B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
 820
 821         /* Write the key to the Key Table Pointer offset */
 822         offset = dev->ktp + (index * B43_SEC_KEYSIZE);
 823         for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
 824                 value = key[i];
 825                 value |= (u16) (key[i + 1]) << 8;
 826                 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
 827         }
 828 }
 829
 830 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
 831 {
 832         u32 addrtmp[2] = { 0, 0, };
 833         u8 per_sta_keys_start = 8;
 834
 835         if (b43_new_kidx_api(dev))
 836                 per_sta_keys_start = 4;
 837
 838         B43_WARN_ON(index < per_sta_keys_start);
 839         /* We have two default TX keys and possibly two default RX keys.
 840          * Physical mac 0 is mapped to physical key 4 or 8, depending
 841          * on the firmware version.
 842          * So we must adjust the index here.
 843          */
 844         index -= per_sta_keys_start;
 845
 846         if (addr) {
 847                 addrtmp[0] = addr[0];
 848                 addrtmp[0] |= ((u32) (addr[1]) << 8);
 849                 addrtmp[0] |= ((u32) (addr[2]) << 16);
 850                 addrtmp[0] |= ((u32) (addr[3]) << 24);
 851                 addrtmp[1] = addr[4];
 852                 addrtmp[1] |= ((u32) (addr[5]) << 8);
 853         }
 854
 855         if (dev->dev->id.revision >= 5) {
 856                 /* Receive match transmitter address mechanism */
 857                 b43_shm_write32(dev, B43_SHM_RCMTA,
 858                                 (index * 2) + 0, addrtmp[0]);
 859                 b43_shm_write16(dev, B43_SHM_RCMTA,
 860                                 (index * 2) + 1, addrtmp[1]);
 861         } else {
 862                 /* RXE (Receive Engine) and
 863                  * PSM (Programmable State Machine) mechanism
 864                  */
 865                 if (index < 8) {
 866                         /* TODO write to RCM 16, 19, 22 and 25 */
 867                 } else {
 868                         b43_shm_write32(dev, B43_SHM_SHARED,
 869                                         B43_SHM_SH_PSM + (index * 6) + 0,
 870                                         addrtmp[0]);
 871                         b43_shm_write16(dev, B43_SHM_SHARED,
 872                                         B43_SHM_SH_PSM + (index * 6) + 4,
 873                                         addrtmp[1]);
 874                 }
 875         }
 876 }
 877
 878 static void do_key_write(struct b43_wldev *dev,
 879                          u8 index, u8 algorithm,
 880                          const u8 * key, size_t key_len, const u8 * mac_addr)
 881 {
 882         u8 buf[B43_SEC_KEYSIZE] = { 0, };
 883         u8 per_sta_keys_start = 8;
 884
 885         if (b43_new_kidx_api(dev))
 886                 per_sta_keys_start = 4;
 887
 888         B43_WARN_ON(index >= dev->max_nr_keys);
 889         B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
 890
 891         if (index >= per_sta_keys_start)
 892                 keymac_write(dev, index, NULL); /* First zero out mac. */
 893         if (key)
 894                 memcpy(buf, key, key_len);
 895         key_write(dev, index, algorithm, buf);
 896         if (index >= per_sta_keys_start)
 897                 keymac_write(dev, index, mac_addr);
 898
 899         dev->key[index].algorithm = algorithm;
 900 }
 901
 902 static int b43_key_write(struct b43_wldev *dev,
 903                          int index, u8 algorithm,
 904                          const u8 * key, size_t key_len,
 905                          const u8 * mac_addr,
 906                          struct ieee80211_key_conf *keyconf)
 907 {
 908         int i;
 909         int sta_keys_start;
 910
 911         if (key_len > B43_SEC_KEYSIZE)
 912                 return -EINVAL;
 913         for (i = 0; i < dev->max_nr_keys; i++) {
 914                 /* Check that we don't already have this key. */
 915                 B43_WARN_ON(dev->key[i].keyconf == keyconf);
 916         }
 917         if (index < 0) {
 918                 /* Either pairwise key or address is 00:00:00:00:00:00
 919                  * for transmit-only keys. Search the index. */
 920                 if (b43_new_kidx_api(dev))
 921                         sta_keys_start = 4;
 922                 else
 923                         sta_keys_start = 8;
 924                 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
 925                         if (!dev->key[i].keyconf) {
 926                                 /* found empty */
 927                                 index = i;
 928                                 break;
 929                         }
 930                 }
 931                 if (index < 0) {
 932                         b43err(dev->wl, "Out of hardware key memory\n");
 933                         return -ENOSPC;
 934                 }
 935         } else
 936                 B43_WARN_ON(index > 3);
 937
 938         do_key_write(dev, index, algorithm, key, key_len, mac_addr);
 939         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 940                 /* Default RX key */
 941                 B43_WARN_ON(mac_addr);
 942                 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
 943         }
 944         keyconf->hw_key_idx = index;
 945         dev->key[index].keyconf = keyconf;
 946
 947         return 0;
 948 }
 949
 950 static int b43_key_clear(struct b43_wldev *dev, int index)
 951 {
 952         if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
 953                 return -EINVAL;
 954         do_key_write(dev, index, B43_SEC_ALGO_NONE,
 955                      NULL, B43_SEC_KEYSIZE, NULL);
 956         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 957                 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
 958                              NULL, B43_SEC_KEYSIZE, NULL);
 959         }
 960         dev->key[index].keyconf = NULL;
 961
 962         return 0;
 963 }
 964
 965 static void b43_clear_keys(struct b43_wldev *dev)
 966 {
 967         int i;
 968
 969         for (i = 0; i < dev->max_nr_keys; i++)
 970                 b43_key_clear(dev, i);
 971 }
 972
 973 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
 974 {
 975         u32 macctl;
 976         u16 ucstat;
 977         bool hwps;
 978         bool awake;
 979         int i;
 980
 981         B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
 982                     (ps_flags & B43_PS_DISABLED));
 983         B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
 984
 985         if (ps_flags & B43_PS_ENABLED) {
 986                 hwps = 1;
 987         } else if (ps_flags & B43_PS_DISABLED) {
 988                 hwps = 0;
 989         } else {
 990                 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
 991                 //      and thus is not an AP and we are associated, set bit 25
 992         }
 993         if (ps_flags & B43_PS_AWAKE) {
 994                 awake = 1;
 995         } else if (ps_flags & B43_PS_ASLEEP) {
 996                 awake = 0;
 997         } else {
 998                 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
 999                 //      or we are associated, or FIXME, or the latest PS-Poll packet sent was
1000                 //      successful, set bit26
1001         }
1002
1003 /* FIXME: For now we force awake-on and hwps-off */
1004         hwps = 0;
1005         awake = 1;
1006
1007         macctl = b43_read32(dev, B43_MMIO_MACCTL);
1008         if (hwps)
1009                 macctl |= B43_MACCTL_HWPS;
1010         else
1011                 macctl &= ~B43_MACCTL_HWPS;
1012         if (awake)
1013                 macctl |= B43_MACCTL_AWAKE;
1014         else
1015                 macctl &= ~B43_MACCTL_AWAKE;
1016         b43_write32(dev, B43_MMIO_MACCTL, macctl);
1017         /* Commit write */
1018         b43_read32(dev, B43_MMIO_MACCTL);
1019         if (awake && dev->dev->id.revision >= 5) {
1020                 /* Wait for the microcode to wake up. */
1021                 for (i = 0; i < 100; i++) {
1022                         ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1023                                                 B43_SHM_SH_UCODESTAT);
1024                         if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1025                                 break;
1026                         udelay(10);
1027                 }
1028         }
1029 }
1030
1031 /* Turn the Analog ON/OFF */
1032 static void b43_switch_analog(struct b43_wldev *dev, int on)
1033 {
1034         switch (dev->phy.type) {
1035         case B43_PHYTYPE_A:
1036         case B43_PHYTYPE_G:
1037                 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
1038                 break;
1039         case B43_PHYTYPE_N:
1040                 b43_phy_write(dev, B43_NPHY_AFECTL_OVER,
1041                               on ? 0 : 0x7FFF);
1042                 break;
1043         default:
1044                 B43_WARN_ON(1);
1045         }
1046 }
1047
1048 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1049 {
1050         u32 tmslow;
1051         u32 macctl;
1052
1053         flags |= B43_TMSLOW_PHYCLKEN;
1054         flags |= B43_TMSLOW_PHYRESET;
1055         ssb_device_enable(dev->dev, flags);
1056         msleep(2);              /* Wait for the PLL to turn on. */
1057
1058         /* Now take the PHY out of Reset again */
1059         tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1060         tmslow |= SSB_TMSLOW_FGC;
1061         tmslow &= ~B43_TMSLOW_PHYRESET;
1062         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1063         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
1064         msleep(1);
1065         tmslow &= ~SSB_TMSLOW_FGC;
1066         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1067         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
1068         msleep(1);
1069
1070         /* Turn Analog ON */
1071         b43_switch_analog(dev, 1);
1072
1073         macctl = b43_read32(dev, B43_MMIO_MACCTL);
1074         macctl &= ~B43_MACCTL_GMODE;
1075         if (flags & B43_TMSLOW_GMODE)
1076                 macctl |= B43_MACCTL_GMODE;
1077         macctl |= B43_MACCTL_IHR_ENABLED;
1078         b43_write32(dev, B43_MMIO_MACCTL, macctl);
1079 }
1080
1081 static void handle_irq_transmit_status(struct b43_wldev *dev)
1082 {
1083         u32 v0, v1;
1084         u16 tmp;
1085         struct b43_txstatus stat;
1086
1087         while (1) {
1088                 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1089                 if (!(v0 & 0x00000001))
1090                         break;
1091                 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1092
1093                 stat.cookie = (v0 >> 16);
1094                 stat.seq = (v1 & 0x0000FFFF);
1095                 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1096                 tmp = (v0 & 0x0000FFFF);
1097                 stat.frame_count = ((tmp & 0xF000) >> 12);
1098                 stat.rts_count = ((tmp & 0x0F00) >> 8);
1099                 stat.supp_reason = ((tmp & 0x001C) >> 2);
1100                 stat.pm_indicated = !!(tmp & 0x0080);
1101                 stat.intermediate = !!(tmp & 0x0040);
1102                 stat.for_ampdu = !!(tmp & 0x0020);
1103                 stat.acked = !!(tmp & 0x0002);
1104
1105                 b43_handle_txstatus(dev, &stat);
1106         }
1107 }
1108
1109 static void drain_txstatus_queue(struct b43_wldev *dev)
1110 {
1111         u32 dummy;
1112
1113         if (dev->dev->id.revision < 5)
1114                 return;
1115         /* Read all entries from the microcode TXstatus FIFO
1116          * and throw them away.
1117          */
1118         while (1) {
1119                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1120                 if (!(dummy & 0x00000001))
1121                         break;
1122                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1123         }
1124 }
1125
1126 static u32 b43_jssi_read(struct b43_wldev *dev)
1127 {
1128         u32 val = 0;
1129
1130         val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1131         val <<= 16;
1132         val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1133
1134         return val;
1135 }
1136
1137 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1138 {
1139         b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1140         b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1141 }
1142
1143 static void b43_generate_noise_sample(struct b43_wldev *dev)
1144 {
1145         b43_jssi_write(dev, 0x7F7F7F7F);
1146         b43_write32(dev, B43_MMIO_MACCMD,
1147                     b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1148         B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1149 }
1150
1151 static void b43_calculate_link_quality(struct b43_wldev *dev)
1152 {
1153         /* Top half of Link Quality calculation. */
1154
1155         if (dev->noisecalc.calculation_running)
1156                 return;
1157         dev->noisecalc.channel_at_start = dev->phy.channel;
1158         dev->noisecalc.calculation_running = 1;
1159         dev->noisecalc.nr_samples = 0;
1160
1161         b43_generate_noise_sample(dev);
1162 }
1163
1164 static void handle_irq_noise(struct b43_wldev *dev)
1165 {
1166         struct b43_phy *phy = &dev->phy;
1167         u16 tmp;
1168         u8 noise[4];
1169         u8 i, j;
1170         s32 average;
1171
1172         /* Bottom half of Link Quality calculation. */
1173
1174         B43_WARN_ON(!dev->noisecalc.calculation_running);
1175         if (dev->noisecalc.channel_at_start != phy->channel)
1176                 goto drop_calculation;
1177         *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1178         if (noise[0] == 0x7F || noise[1] == 0x7F ||
1179             noise[2] == 0x7F || noise[3] == 0x7F)
1180                 goto generate_new;
1181
1182         /* Get the noise samples. */
1183         B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1184         i = dev->noisecalc.nr_samples;
1185         noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1186         noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1187         noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1188         noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1189         dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1190         dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1191         dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1192         dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1193         dev->noisecalc.nr_samples++;
1194         if (dev->noisecalc.nr_samples == 8) {
1195                 /* Calculate the Link Quality by the noise samples. */
1196                 average = 0;
1197                 for (i = 0; i < 8; i++) {
1198                         for (j = 0; j < 4; j++)
1199                                 average += dev->noisecalc.samples[i][j];
1200                 }
1201                 average /= (8 * 4);
1202                 average *= 125;
1203                 average += 64;
1204                 average /= 128;
1205                 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1206                 tmp = (tmp / 128) & 0x1F;
1207                 if (tmp >= 8)
1208                         average += 2;
1209                 else
1210                         average -= 25;
1211                 if (tmp == 8)
1212                         average -= 72;
1213                 else
1214                         average -= 48;
1215
1216                 dev->stats.link_noise = average;
1217               drop_calculation:
1218                 dev->noisecalc.calculation_running = 0;
1219                 return;
1220         }
1221       generate_new:
1222         b43_generate_noise_sample(dev);
1223 }
1224
1225 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1226 {
1227         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1228                 ///TODO: PS TBTT
1229         } else {
1230                 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1231                         b43_power_saving_ctl_bits(dev, 0);
1232         }
1233         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1234                 dev->dfq_valid = 1;
1235 }
1236
1237 static void handle_irq_atim_end(struct b43_wldev *dev)
1238 {
1239         if (dev->dfq_valid) {
1240                 b43_write32(dev, B43_MMIO_MACCMD,
1241                             b43_read32(dev, B43_MMIO_MACCMD)
1242                             | B43_MACCMD_DFQ_VALID);
1243                 dev->dfq_valid = 0;
1244         }
1245 }
1246
1247 static void handle_irq_pmq(struct b43_wldev *dev)
1248 {
1249         u32 tmp;
1250
1251         //TODO: AP mode.
1252
1253         while (1) {
1254                 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1255                 if (!(tmp & 0x00000008))
1256                         break;
1257         }
1258         /* 16bit write is odd, but correct. */
1259         b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1260 }
1261
1262 static void b43_write_template_common(struct b43_wldev *dev,
1263                                       const u8 * data, u16 size,
1264                                       u16 ram_offset,
1265                                       u16 shm_size_offset, u8 rate)
1266 {
1267         u32 i, tmp;
1268         struct b43_plcp_hdr4 plcp;
1269
1270         plcp.data = 0;
1271         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1272         b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1273         ram_offset += sizeof(u32);
1274         /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1275          * So leave the first two bytes of the next write blank.
1276          */
1277         tmp = (u32) (data[0]) << 16;
1278         tmp |= (u32) (data[1]) << 24;
1279         b43_ram_write(dev, ram_offset, tmp);
1280         ram_offset += sizeof(u32);
1281         for (i = 2; i < size; i += sizeof(u32)) {
1282                 tmp = (u32) (data[i + 0]);
1283                 if (i + 1 < size)
1284                         tmp |= (u32) (data[i + 1]) << 8;
1285                 if (i + 2 < size)
1286                         tmp |= (u32) (data[i + 2]) << 16;
1287                 if (i + 3 < size)
1288                         tmp |= (u32) (data[i + 3]) << 24;
1289                 b43_ram_write(dev, ram_offset + i - 2, tmp);
1290         }
1291         b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1292                         size + sizeof(struct b43_plcp_hdr6));
1293 }
1294
1295 /* Check if the use of the antenna that ieee80211 told us to
1296  * use is possible. This will fall back to DEFAULT.
1297  * "antenna_nr" is the antenna identifier we got from ieee80211. */
1298 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1299                                   u8 antenna_nr)
1300 {
1301         u8 antenna_mask;
1302
1303         if (antenna_nr == 0) {
1304                 /* Zero means "use default antenna". That's always OK. */
1305                 return 0;
1306         }
1307
1308         /* Get the mask of available antennas. */
1309         if (dev->phy.gmode)
1310                 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1311         else
1312                 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1313
1314         if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1315                 /* This antenna is not available. Fall back to default. */
1316                 return 0;
1317         }
1318
1319         return antenna_nr;
1320 }
1321
1322 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
1323 {
1324         antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
1325         switch (antenna) {
1326         case 0:         /* default/diversity */
1327                 return B43_ANTENNA_DEFAULT;
1328         case 1:         /* Antenna 0 */
1329                 return B43_ANTENNA0;
1330         case 2:         /* Antenna 1 */
1331                 return B43_ANTENNA1;
1332         case 3:         /* Antenna 2 */
1333                 return B43_ANTENNA2;
1334         case 4:         /* Antenna 3 */
1335                 return B43_ANTENNA3;
1336         default:
1337                 return B43_ANTENNA_DEFAULT;
1338         }
1339 }
1340
1341 /* Convert a b43 antenna number value to the PHY TX control value. */
1342 static u16 b43_antenna_to_phyctl(int antenna)
1343 {
1344         switch (antenna) {
1345         case B43_ANTENNA0:
1346                 return B43_TXH_PHY_ANT0;
1347         case B43_ANTENNA1:
1348                 return B43_TXH_PHY_ANT1;
1349         case B43_ANTENNA2:
1350                 return B43_TXH_PHY_ANT2;
1351         case B43_ANTENNA3:
1352                 return B43_TXH_PHY_ANT3;
1353         case B43_ANTENNA_AUTO:
1354                 return B43_TXH_PHY_ANT01AUTO;
1355         }
1356         B43_WARN_ON(1);
1357         return 0;
1358 }
1359
1360 static void b43_write_beacon_template(struct b43_wldev *dev,
1361                                       u16 ram_offset,
1362                                       u16 shm_size_offset)
1363 {
1364         unsigned int i, len, variable_len;
1365         const struct ieee80211_mgmt *bcn;
1366         const u8 *ie;
1367         bool tim_found = 0;
1368         unsigned int rate;
1369         u16 ctl;
1370         int antenna;
1371
1372         bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1373         len = min((size_t) dev->wl->current_beacon->len,
1374                   0x200 - sizeof(struct b43_plcp_hdr6));
1375         rate = dev->wl->beacon_txctl.tx_rate->hw_value;
1376
1377         b43_write_template_common(dev, (const u8 *)bcn,
1378                                   len, ram_offset, shm_size_offset, rate);
1379
1380         /* Write the PHY TX control parameters. */
1381         antenna = b43_antenna_from_ieee80211(dev,
1382                         dev->wl->beacon_txctl.antenna_sel_tx);
1383         antenna = b43_antenna_to_phyctl(antenna);
1384         ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1385         /* We can't send beacons with short preamble. Would get PHY errors. */
1386         ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1387         ctl &= ~B43_TXH_PHY_ANT;
1388         ctl &= ~B43_TXH_PHY_ENC;
1389         ctl |= antenna;
1390         if (b43_is_cck_rate(rate))
1391                 ctl |= B43_TXH_PHY_ENC_CCK;
1392         else
1393                 ctl |= B43_TXH_PHY_ENC_OFDM;
1394         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1395
1396         /* Find the position of the TIM and the DTIM_period value
1397          * and write them to SHM. */
1398         ie = bcn->u.beacon.variable;
1399         variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1400         for (i = 0; i < variable_len - 2; ) {
1401                 uint8_t ie_id, ie_len;
1402
1403                 ie_id = ie[i];
1404                 ie_len = ie[i + 1];
1405                 if (ie_id == 5) {
1406                         u16 tim_position;
1407                         u16 dtim_period;
1408                         /* This is the TIM Information Element */
1409
1410                         /* Check whether the ie_len is in the beacon data range. */
1411                         if (variable_len < ie_len + 2 + i)
1412                                 break;
1413                         /* A valid TIM is at least 4 bytes long. */
1414                         if (ie_len < 4)
1415                                 break;
1416                         tim_found = 1;
1417
1418                         tim_position = sizeof(struct b43_plcp_hdr6);
1419                         tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1420                         tim_position += i;
1421
1422                         dtim_period = ie[i + 3];
1423
1424                         b43_shm_write16(dev, B43_SHM_SHARED,
1425                                         B43_SHM_SH_TIMBPOS, tim_position);
1426                         b43_shm_write16(dev, B43_SHM_SHARED,
1427                                         B43_SHM_SH_DTIMPER, dtim_period);
1428                         break;
1429                 }
1430                 i += ie_len + 2;
1431         }
1432         if (!tim_found) {
1433                 b43warn(dev->wl, "Did not find a valid TIM IE in "
1434                         "the beacon template packet. AP or IBSS operation "
1435                         "may be broken.\n");
1436         } else
1437                 b43dbg(dev->wl, "Updated beacon template\n");
1438 }
1439
1440 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1441                                       u16 shm_offset, u16 size,
1442                                       struct ieee80211_rate *rate)
1443 {
1444         struct b43_plcp_hdr4 plcp;
1445         u32 tmp;
1446         __le16 dur;
1447
1448         plcp.data = 0;
1449         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1450         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1451                                                dev->wl->vif, size,
1452                                                rate);
1453         /* Write PLCP in two parts and timing for packet transfer */
1454         tmp = le32_to_cpu(plcp.data);
1455         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1456         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1457         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1458 }
1459
1460 /* Instead of using custom probe response template, this function
1461  * just patches custom beacon template by:
1462  * 1) Changing packet type
1463  * 2) Patching duration field
1464  * 3) Stripping TIM
1465  */
1466 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1467                                           u16 *dest_size,
1468                                           struct ieee80211_rate *rate)
1469 {
1470         const u8 *src_data;
1471         u8 *dest_data;
1472         u16 src_size, elem_size, src_pos, dest_pos;
1473         __le16 dur;
1474         struct ieee80211_hdr *hdr;
1475         size_t ie_start;
1476
1477         src_size = dev->wl->current_beacon->len;
1478         src_data = (const u8 *)dev->wl->current_beacon->data;
1479
1480         /* Get the start offset of the variable IEs in the packet. */
1481         ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1482         B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1483
1484         if (B43_WARN_ON(src_size < ie_start))
1485                 return NULL;
1486
1487         dest_data = kmalloc(src_size, GFP_ATOMIC);
1488         if (unlikely(!dest_data))
1489                 return NULL;
1490
1491         /* Copy the static data and all Information Elements, except the TIM. */
1492         memcpy(dest_data, src_data, ie_start);
1493         src_pos = ie_start;
1494         dest_pos = ie_start;
1495         for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1496                 elem_size = src_data[src_pos + 1] + 2;
1497                 if (src_data[src_pos] == 5) {
1498                         /* This is the TIM. */
1499                         continue;
1500                 }
1501                 memcpy(dest_data + dest_pos, src_data + src_pos,
1502                        elem_size);
1503                 dest_pos += elem_size;
1504         }
1505         *dest_size = dest_pos;
1506         hdr = (struct ieee80211_hdr *)dest_data;
1507
1508         /* Set the frame control. */
1509         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1510                                          IEEE80211_STYPE_PROBE_RESP);
1511         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1512                                                dev->wl->vif, *dest_size,
1513                                                rate);
1514         hdr->duration_id = dur;
1515
1516         return dest_data;
1517 }
1518
1519 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1520                                           u16 ram_offset,
1521                                           u16 shm_size_offset,
1522                                           struct ieee80211_rate *rate)
1523 {
1524         const u8 *probe_resp_data;
1525         u16 size;
1526
1527         size = dev->wl->current_beacon->len;
1528         probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1529         if (unlikely(!probe_resp_data))
1530                 return;
1531
1532         /* Looks like PLCP headers plus packet timings are stored for
1533          * all possible basic rates
1534          */
1535         b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1536         b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1537         b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1538         b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1539
1540         size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1541         b43_write_template_common(dev, probe_resp_data,
1542                                   size, ram_offset, shm_size_offset,
1543                                   rate->hw_value);
1544         kfree(probe_resp_data);
1545 }
1546
1547 static void handle_irq_beacon(struct b43_wldev *dev)
1548 {
1549         struct b43_wl *wl = dev->wl;
1550         u32 cmd, beacon0_valid, beacon1_valid;
1551
1552         if (!b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
1553                 return;
1554
1555         /* This is the bottom half of the asynchronous beacon update. */
1556
1557         /* Ignore interrupt in the future. */
1558         dev->irq_savedstate &= ~B43_IRQ_BEACON;
1559
1560         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1561         beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1562         beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1563
1564         /* Schedule interrupt manually, if busy. */
1565         if (beacon0_valid && beacon1_valid) {
1566                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1567                 dev->irq_savedstate |= B43_IRQ_BEACON;
1568                 return;
1569         }
1570
1571         if (!beacon0_valid) {
1572                 if (!wl->beacon0_uploaded) {
1573                         b43_write_beacon_template(dev, 0x68, 0x18);
1574                         b43_write_probe_resp_template(dev, 0x268, 0x4A,
1575                                                       &__b43_ratetable[3]);
1576                         wl->beacon0_uploaded = 1;
1577                 }
1578                 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1579                 cmd |= B43_MACCMD_BEACON0_VALID;
1580                 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1581         } else if (!beacon1_valid) {
1582                 if (!wl->beacon1_uploaded) {
1583                         b43_write_beacon_template(dev, 0x468, 0x1A);
1584                         wl->beacon1_uploaded = 1;
1585                 }
1586                 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1587                 cmd |= B43_MACCMD_BEACON1_VALID;
1588                 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1589         }
1590 }
1591
1592 static void b43_beacon_update_trigger_work(struct work_struct *work)
1593 {
1594         struct b43_wl *wl = container_of(work, struct b43_wl,
1595                                          beacon_update_trigger);
1596         struct b43_wldev *dev;
1597
1598         mutex_lock(&wl->mutex);
1599         dev = wl->current_dev;
1600         if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1601                 spin_lock_irq(&wl->irq_lock);
1602                 /* update beacon right away or defer to irq */
1603                 dev->irq_savedstate = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1604                 handle_irq_beacon(dev);
1605                 /* The handler might have updated the IRQ mask. */
1606                 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK,
1607                             dev->irq_savedstate);
1608                 mmiowb();
1609                 spin_unlock_irq(&wl->irq_lock);
1610         }
1611         mutex_unlock(&wl->mutex);
1612 }
1613
1614 /* Asynchronously update the packet templates in template RAM.
1615  * Locking: Requires wl->irq_lock to be locked. */
1616 static void b43_update_templates(struct b43_wl *wl, struct sk_buff *beacon,
1617                                  const struct ieee80211_tx_control *txctl)
1618 {
1619         /* This is the top half of the ansynchronous beacon update.
1620          * The bottom half is the beacon IRQ.
1621          * Beacon update must be asynchronous to avoid sending an
1622          * invalid beacon. This can happen for example, if the firmware
1623          * transmits a beacon while we are updating it. */
1624
1625         if (wl->current_beacon)
1626                 dev_kfree_skb_any(wl->current_beacon);
1627         wl->current_beacon = beacon;
1628         memcpy(&wl->beacon_txctl, txctl, sizeof(wl->beacon_txctl));
1629         wl->beacon0_uploaded = 0;
1630         wl->beacon1_uploaded = 0;
1631         queue_work(wl->hw->workqueue, &wl->beacon_update_trigger);
1632 }
1633
1634 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1635 {
1636         u32 tmp;
1637         u16 i, len;
1638
1639         len = min((u16) ssid_len, (u16) 0x100);
1640         for (i = 0; i < len; i += sizeof(u32)) {
1641                 tmp = (u32) (ssid[i + 0]);
1642                 if (i + 1 < len)
1643                         tmp |= (u32) (ssid[i + 1]) << 8;
1644                 if (i + 2 < len)
1645                         tmp |= (u32) (ssid[i + 2]) << 16;
1646                 if (i + 3 < len)
1647                         tmp |= (u32) (ssid[i + 3]) << 24;
1648                 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1649         }
1650         b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1651 }
1652
1653 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1654 {
1655         b43_time_lock(dev);
1656         if (dev->dev->id.revision >= 3) {
1657                 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1658                 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1659         } else {
1660                 b43_write16(dev, 0x606, (beacon_int >> 6));
1661                 b43_write16(dev, 0x610, beacon_int);
1662         }
1663         b43_time_unlock(dev);
1664         b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1665 }
1666
1667 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1668 {
1669         //TODO
1670 }
1671
1672 /* Interrupt handler bottom-half */
1673 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1674 {
1675         u32 reason;
1676         u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1677         u32 merged_dma_reason = 0;
1678         int i;
1679         unsigned long flags;
1680
1681         spin_lock_irqsave(&dev->wl->irq_lock, flags);
1682
1683         B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1684
1685         reason = dev->irq_reason;
1686         for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1687                 dma_reason[i] = dev->dma_reason[i];
1688                 merged_dma_reason |= dma_reason[i];
1689         }
1690
1691         if (unlikely(reason & B43_IRQ_MAC_TXERR))
1692                 b43err(dev->wl, "MAC transmission error\n");
1693
1694         if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1695                 b43err(dev->wl, "PHY transmission error\n");
1696                 rmb();
1697                 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1698                         atomic_set(&dev->phy.txerr_cnt,
1699                                    B43_PHY_TX_BADNESS_LIMIT);
1700                         b43err(dev->wl, "Too many PHY TX errors, "
1701                                         "restarting the controller\n");
1702                         b43_controller_restart(dev, "PHY TX errors");
1703                 }
1704         }
1705
1706         if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1707                                           B43_DMAIRQ_NONFATALMASK))) {
1708                 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1709                         b43err(dev->wl, "Fatal DMA error: "
1710                                "0x%08X, 0x%08X, 0x%08X, "
1711                                "0x%08X, 0x%08X, 0x%08X\n",
1712                                dma_reason[0], dma_reason[1],
1713                                dma_reason[2], dma_reason[3],
1714                                dma_reason[4], dma_reason[5]);
1715                         b43_controller_restart(dev, "DMA error");
1716                         mmiowb();
1717                         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1718                         return;
1719                 }
1720                 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1721                         b43err(dev->wl, "DMA error: "
1722                                "0x%08X, 0x%08X, 0x%08X, "
1723                                "0x%08X, 0x%08X, 0x%08X\n",
1724                                dma_reason[0], dma_reason[1],
1725                                dma_reason[2], dma_reason[3],
1726                                dma_reason[4], dma_reason[5]);
1727                 }
1728         }
1729
1730         if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1731                 handle_irq_ucode_debug(dev);
1732         if (reason & B43_IRQ_TBTT_INDI)
1733                 handle_irq_tbtt_indication(dev);
1734         if (reason & B43_IRQ_ATIM_END)
1735                 handle_irq_atim_end(dev);
1736         if (reason & B43_IRQ_BEACON)
1737                 handle_irq_beacon(dev);
1738         if (reason & B43_IRQ_PMQ)
1739                 handle_irq_pmq(dev);
1740         if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1741                 ;/* TODO */
1742         if (reason & B43_IRQ_NOISESAMPLE_OK)
1743                 handle_irq_noise(dev);
1744
1745         /* Check the DMA reason registers for received data. */
1746         if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1747                 if (b43_using_pio_transfers(dev))
1748                         b43_pio_rx(dev->pio.rx_queue);
1749                 else
1750                         b43_dma_rx(dev->dma.rx_ring);
1751         }
1752         B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1753         B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1754         B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1755         B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1756         B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1757
1758         if (reason & B43_IRQ_TX_OK)
1759                 handle_irq_transmit_status(dev);
1760
1761         b43_interrupt_enable(dev, dev->irq_savedstate);
1762         mmiowb();
1763         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1764 }
1765
1766 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1767 {
1768         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1769
1770         b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1771         b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1772         b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1773         b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1774         b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1775         b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1776 }
1777
1778 /* Interrupt handler top-half */
1779 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1780 {
1781         irqreturn_t ret = IRQ_NONE;
1782         struct b43_wldev *dev = dev_id;
1783         u32 reason;
1784
1785         if (!dev)
1786                 return IRQ_NONE;
1787
1788         spin_lock(&dev->wl->irq_lock);
1789
1790         if (b43_status(dev) < B43_STAT_STARTED)
1791                 goto out;
1792         reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1793         if (reason == 0xffffffff)       /* shared IRQ */
1794                 goto out;
1795         ret = IRQ_HANDLED;
1796         reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1797         if (!reason)
1798                 goto out;
1799
1800         dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1801             & 0x0001DC00;
1802         dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1803             & 0x0000DC00;
1804         dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1805             & 0x0000DC00;
1806         dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1807             & 0x0001DC00;
1808         dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1809             & 0x0000DC00;
1810         dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1811             & 0x0000DC00;
1812
1813         b43_interrupt_ack(dev, reason);
1814         /* disable all IRQs. They are enabled again in the bottom half. */
1815         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1816         /* save the reason code and call our bottom half. */
1817         dev->irq_reason = reason;
1818         tasklet_schedule(&dev->isr_tasklet);
1819       out:
1820         mmiowb();
1821         spin_unlock(&dev->wl->irq_lock);
1822
1823         return ret;
1824 }
1825
1826 static void do_release_fw(struct b43_firmware_file *fw)
1827 {
1828         release_firmware(fw->data);
1829         fw->data = NULL;
1830         fw->filename = NULL;
1831 }
1832
1833 static void b43_release_firmware(struct b43_wldev *dev)
1834 {
1835         do_release_fw(&dev->fw.ucode);
1836         do_release_fw(&dev->fw.pcm);
1837         do_release_fw(&dev->fw.initvals);
1838         do_release_fw(&dev->fw.initvals_band);
1839 }
1840
1841 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1842 {
1843         const char *text;
1844
1845         text = "You must go to "
1846                "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1847                "and download the latest firmware (version 4).\n";
1848         if (error)
1849                 b43err(wl, text);
1850         else
1851                 b43warn(wl, text);
1852 }
1853
1854 static int do_request_fw(struct b43_wldev *dev,
1855                          const char *name,
1856                          struct b43_firmware_file *fw)
1857 {
1858         char path[sizeof(modparam_fwpostfix) + 32];
1859         const struct firmware *blob;
1860         struct b43_fw_header *hdr;
1861         u32 size;
1862         int err;
1863
1864         if (!name) {
1865                 /* Don't fetch anything. Free possibly cached firmware. */
1866                 do_release_fw(fw);
1867                 return 0;
1868         }
1869         if (fw->filename) {
1870                 if (strcmp(fw->filename, name) == 0)
1871                         return 0; /* Already have this fw. */
1872                 /* Free the cached firmware first. */
1873                 do_release_fw(fw);
1874         }
1875
1876         snprintf(path, ARRAY_SIZE(path),
1877                  "b43%s/%s.fw",
1878                  modparam_fwpostfix, name);
1879         err = request_firmware(&blob, path, dev->dev->dev);
1880         if (err) {
1881                 b43err(dev->wl, "Firmware file \"%s\" not found "
1882                        "or load failed.\n", path);
1883                 return err;
1884         }
1885         if (blob->size < sizeof(struct b43_fw_header))
1886                 goto err_format;
1887         hdr = (struct b43_fw_header *)(blob->data);
1888         switch (hdr->type) {
1889         case B43_FW_TYPE_UCODE:
1890         case B43_FW_TYPE_PCM:
1891                 size = be32_to_cpu(hdr->size);
1892                 if (size != blob->size - sizeof(struct b43_fw_header))
1893                         goto err_format;
1894                 /* fallthrough */
1895         case B43_FW_TYPE_IV:
1896                 if (hdr->ver != 1)
1897                         goto err_format;
1898                 break;
1899         default:
1900                 goto err_format;
1901         }
1902
1903         fw->data = blob;
1904         fw->filename = name;
1905
1906         return 0;
1907
1908 err_format:
1909         b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1910         release_firmware(blob);
1911
1912         return -EPROTO;
1913 }
1914
1915 static int b43_request_firmware(struct b43_wldev *dev)
1916 {
1917         struct b43_firmware *fw = &dev->fw;
1918         const u8 rev = dev->dev->id.revision;
1919         const char *filename;
1920         u32 tmshigh;
1921         int err;
1922
1923         /* Get microcode */
1924         tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1925         if ((rev >= 5) && (rev <= 10))
1926                 filename = "ucode5";
1927         else if ((rev >= 11) && (rev <= 12))
1928                 filename = "ucode11";
1929         else if (rev >= 13)
1930                 filename = "ucode13";
1931         else
1932                 goto err_no_ucode;
1933         err = do_request_fw(dev, filename, &fw->ucode);
1934         if (err)
1935                 goto err_load;
1936
1937         /* Get PCM code */
1938         if ((rev >= 5) && (rev <= 10))
1939                 filename = "pcm5";
1940         else if (rev >= 11)
1941                 filename = NULL;
1942         else
1943                 goto err_no_pcm;
1944         err = do_request_fw(dev, filename, &fw->pcm);
1945         if (err)
1946                 goto err_load;
1947
1948         /* Get initvals */
1949         switch (dev->phy.type) {
1950         case B43_PHYTYPE_A:
1951                 if ((rev >= 5) && (rev <= 10)) {
1952                         if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
1953                                 filename = "a0g1initvals5";
1954                         else
1955                                 filename = "a0g0initvals5";
1956                 } else
1957                         goto err_no_initvals;
1958                 break;
1959         case B43_PHYTYPE_G:
1960                 if ((rev >= 5) && (rev <= 10))
1961                         filename = "b0g0initvals5";
1962                 else if (rev >= 13)
1963                         filename = "lp0initvals13";
1964                 else
1965                         goto err_no_initvals;
1966                 break;
1967         case B43_PHYTYPE_N:
1968                 if ((rev >= 11) && (rev <= 12))
1969                         filename = "n0initvals11";
1970                 else
1971                         goto err_no_initvals;
1972                 break;
1973         default:
1974                 goto err_no_initvals;
1975         }
1976         err = do_request_fw(dev, filename, &fw->initvals);
1977         if (err)
1978                 goto err_load;
1979
1980         /* Get bandswitch initvals */
1981         switch (dev->phy.type) {
1982         case B43_PHYTYPE_A:
1983                 if ((rev >= 5) && (rev <= 10)) {
1984                         if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
1985                                 filename = "a0g1bsinitvals5";
1986                         else
1987                                 filename = "a0g0bsinitvals5";
1988                 } else if (rev >= 11)
1989                         filename = NULL;
1990                 else
1991                         goto err_no_initvals;
1992                 break;
1993         case B43_PHYTYPE_G:
1994                 if ((rev >= 5) && (rev <= 10))
1995                         filename = "b0g0bsinitvals5";
1996                 else if (rev >= 11)
1997                         filename = NULL;
1998                 else
1999                         goto err_no_initvals;
2000                 break;
2001         case B43_PHYTYPE_N:
2002                 if ((rev >= 11) && (rev <= 12))
2003                         filename = "n0bsinitvals11";
2004                 else
2005                         goto err_no_initvals;
2006                 break;
2007         default:
2008                 goto err_no_initvals;
2009         }
2010         err = do_request_fw(dev, filename, &fw->initvals_band);
2011         if (err)
2012                 goto err_load;
2013
2014         return 0;
2015
2016 err_load:
2017         b43_print_fw_helptext(dev->wl, 1);
2018         goto error;
2019
2020 err_no_ucode:
2021         err = -ENODEV;
2022         b43err(dev->wl, "No microcode available for core rev %u\n", rev);
2023         goto error;
2024
2025 err_no_pcm:
2026         err = -ENODEV;
2027         b43err(dev->wl, "No PCM available for core rev %u\n", rev);
2028         goto error;
2029
2030 err_no_initvals:
2031         err = -ENODEV;
2032         b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
2033                "core rev %u\n", dev->phy.type, rev);
2034         goto error;
2035
2036 error:
2037         b43_release_firmware(dev);
2038         return err;
2039 }
2040
2041 static int b43_upload_microcode(struct b43_wldev *dev)
2042 {
2043         const size_t hdr_len = sizeof(struct b43_fw_header);
2044         const __be32 *data;
2045         unsigned int i, len;
2046         u16 fwrev, fwpatch, fwdate, fwtime;
2047         u32 tmp, macctl;
2048         int err = 0;
2049
2050         /* Jump the microcode PSM to offset 0 */
2051         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2052         B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2053         macctl |= B43_MACCTL_PSM_JMP0;
2054         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2055         /* Zero out all microcode PSM registers and shared memory. */
2056         for (i = 0; i < 64; i++)
2057                 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2058         for (i = 0; i < 4096; i += 2)
2059                 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2060
2061         /* Upload Microcode. */
2062         data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2063         len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2064         b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2065         for (i = 0; i < len; i++) {
2066                 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2067                 udelay(10);
2068         }
2069
2070         if (dev->fw.pcm.data) {
2071                 /* Upload PCM data. */
2072                 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2073                 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2074                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2075                 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2076                 /* No need for autoinc bit in SHM_HW */
2077                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2078                 for (i = 0; i < len; i++) {
2079                         b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2080                         udelay(10);
2081                 }
2082         }
2083
2084         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2085
2086         /* Start the microcode PSM */
2087         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2088         macctl &= ~B43_MACCTL_PSM_JMP0;
2089         macctl |= B43_MACCTL_PSM_RUN;
2090         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2091
2092         /* Wait for the microcode to load and respond */
2093         i = 0;
2094         while (1) {
2095                 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2096                 if (tmp == B43_IRQ_MAC_SUSPENDED)
2097                         break;
2098                 i++;
2099                 if (i >= 20) {
2100                         b43err(dev->wl, "Microcode not responding\n");
2101                         b43_print_fw_helptext(dev->wl, 1);
2102                         err = -ENODEV;
2103                         goto error;
2104                 }
2105                 msleep_interruptible(50);
2106                 if (signal_pending(current)) {
2107                         err = -EINTR;
2108                         goto error;
2109                 }
2110         }
2111         b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);       /* dummy read */
2112
2113         /* Get and check the revisions. */
2114         fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2115         fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2116         fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2117         fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2118
2119         if (fwrev <= 0x128) {
2120                 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2121                        "binary drivers older than version 4.x is unsupported. "
2122                        "You must upgrade your firmware files.\n");
2123                 b43_print_fw_helptext(dev->wl, 1);
2124                 err = -EOPNOTSUPP;
2125                 goto error;
2126         }
2127         b43info(dev->wl, "Loading firmware version %u.%u "
2128                 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2129                 fwrev, fwpatch,
2130                 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2131                 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2132
2133         dev->fw.rev = fwrev;
2134         dev->fw.patch = fwpatch;
2135
2136         if (b43_is_old_txhdr_format(dev)) {
2137                 b43warn(dev->wl, "You are using an old firmware image. "
2138                         "Support for old firmware will be removed in July 2008.\n");
2139                 b43_print_fw_helptext(dev->wl, 0);
2140         }
2141
2142         return 0;
2143
2144 error:
2145         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2146         macctl &= ~B43_MACCTL_PSM_RUN;
2147         macctl |= B43_MACCTL_PSM_JMP0;
2148         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2149
2150         return err;
2151 }
2152
2153 static int b43_write_initvals(struct b43_wldev *dev,
2154                               const struct b43_iv *ivals,
2155                               size_t count,
2156                               size_t array_size)
2157 {
2158         const struct b43_iv *iv;
2159         u16 offset;
2160         size_t i;
2161         bool bit32;
2162
2163         BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2164         iv = ivals;
2165         for (i = 0; i < count; i++) {
2166                 if (array_size < sizeof(iv->offset_size))
2167                         goto err_format;
2168                 array_size -= sizeof(iv->offset_size);
2169                 offset = be16_to_cpu(iv->offset_size);
2170                 bit32 = !!(offset & B43_IV_32BIT);
2171                 offset &= B43_IV_OFFSET_MASK;
2172                 if (offset >= 0x1000)
2173                         goto err_format;
2174                 if (bit32) {
2175                         u32 value;
2176
2177                         if (array_size < sizeof(iv->data.d32))
2178                                 goto err_format;
2179                         array_size -= sizeof(iv->data.d32);
2180
2181                         value = get_unaligned_be32(&iv->data.d32);
2182                         b43_write32(dev, offset, value);
2183
2184                         iv = (const struct b43_iv *)((const uint8_t *)iv +
2185                                                         sizeof(__be16) +
2186                                                         sizeof(__be32));
2187                 } else {
2188                         u16 value;
2189
2190                         if (array_size < sizeof(iv->data.d16))
2191                                 goto err_format;
2192                         array_size -= sizeof(iv->data.d16);
2193
2194                         value = be16_to_cpu(iv->data.d16);
2195                         b43_write16(dev, offset, value);
2196
2197                         iv = (const struct b43_iv *)((const uint8_t *)iv +
2198                                                         sizeof(__be16) +
2199                                                         sizeof(__be16));
2200                 }
2201         }
2202         if (array_size)
2203                 goto err_format;
2204
2205         return 0;
2206
2207 err_format:
2208         b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2209         b43_print_fw_helptext(dev->wl, 1);
2210
2211         return -EPROTO;
2212 }
2213
2214 static int b43_upload_initvals(struct b43_wldev *dev)
2215 {
2216         const size_t hdr_len = sizeof(struct b43_fw_header);
2217         const struct b43_fw_header *hdr;
2218         struct b43_firmware *fw = &dev->fw;
2219         const struct b43_iv *ivals;
2220         size_t count;
2221         int err;
2222
2223         hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2224         ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2225         count = be32_to_cpu(hdr->size);
2226         err = b43_write_initvals(dev, ivals, count,
2227                                  fw->initvals.data->size - hdr_len);
2228         if (err)
2229                 goto out;
2230         if (fw->initvals_band.data) {
2231                 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2232                 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2233                 count = be32_to_cpu(hdr->size);
2234                 err = b43_write_initvals(dev, ivals, count,
2235                                          fw->initvals_band.data->size - hdr_len);
2236                 if (err)
2237                         goto out;
2238         }
2239 out:
2240
2241         return err;
2242 }
2243
2244 /* Initialize the GPIOs
2245  * http://bcm-specs.sipsolutions.net/GPIO
2246  */
2247 static int b43_gpio_init(struct b43_wldev *dev)
2248 {
2249         struct ssb_bus *bus = dev->dev->bus;
2250         struct ssb_device *gpiodev, *pcidev = NULL;
2251         u32 mask, set;
2252
2253         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2254                     & ~B43_MACCTL_GPOUTSMSK);
2255
2256         b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2257                     | 0x000F);
2258
2259         mask = 0x0000001F;
2260         set = 0x0000000F;
2261         if (dev->dev->bus->chip_id == 0x4301) {
2262                 mask |= 0x0060;
2263                 set |= 0x0060;
2264         }
2265         if (0 /* FIXME: conditional unknown */ ) {
2266                 b43_write16(dev, B43_MMIO_GPIO_MASK,
2267                             b43_read16(dev, B43_MMIO_GPIO_MASK)
2268                             | 0x0100);
2269                 mask |= 0x0180;
2270                 set |= 0x0180;
2271         }
2272         if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2273                 b43_write16(dev, B43_MMIO_GPIO_MASK,
2274                             b43_read16(dev, B43_MMIO_GPIO_MASK)
2275                             | 0x0200);
2276                 mask |= 0x0200;
2277                 set |= 0x0200;
2278         }
2279         if (dev->dev->id.revision >= 2)
2280                 mask |= 0x0010; /* FIXME: This is redundant. */
2281
2282 #ifdef CONFIG_SSB_DRIVER_PCICORE
2283         pcidev = bus->pcicore.dev;
2284 #endif
2285         gpiodev = bus->chipco.dev ? : pcidev;
2286         if (!gpiodev)
2287                 return 0;
2288         ssb_write32(gpiodev, B43_GPIO_CONTROL,
2289                     (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2290                      & mask) | set);
2291
2292         return 0;
2293 }
2294
2295 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2296 static void b43_gpio_cleanup(struct b43_wldev *dev)
2297 {
2298         struct ssb_bus *bus = dev->dev->bus;
2299         struct ssb_device *gpiodev, *pcidev = NULL;
2300
2301 #ifdef CONFIG_SSB_DRIVER_PCICORE
2302         pcidev = bus->pcicore.dev;
2303 #endif
2304         gpiodev = bus->chipco.dev ? : pcidev;
2305         if (!gpiodev)
2306                 return;
2307         ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2308 }
2309
2310 /* http://bcm-specs.sipsolutions.net/EnableMac */
2311 static void b43_mac_enable(struct b43_wldev *dev)
2312 {
2313         dev->mac_suspended--;
2314         B43_WARN_ON(dev->mac_suspended < 0);
2315         if (dev->mac_suspended == 0) {
2316                 b43_write32(dev, B43_MMIO_MACCTL,
2317                             b43_read32(dev, B43_MMIO_MACCTL)
2318                             | B43_MACCTL_ENABLED);
2319                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2320                             B43_IRQ_MAC_SUSPENDED);
2321                 /* Commit writes */
2322                 b43_read32(dev, B43_MMIO_MACCTL);
2323                 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2324                 b43_power_saving_ctl_bits(dev, 0);
2325
2326                 /* Re-enable IRQs. */
2327                 spin_lock_irq(&dev->wl->irq_lock);
2328                 b43_interrupt_enable(dev, dev->irq_savedstate);
2329                 spin_unlock_irq(&dev->wl->irq_lock);
2330         }
2331 }
2332
2333 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2334 static void b43_mac_suspend(struct b43_wldev *dev)
2335 {
2336         int i;
2337         u32 tmp;
2338
2339         might_sleep();
2340         B43_WARN_ON(dev->mac_suspended < 0);
2341
2342         if (dev->mac_suspended == 0) {
2343                 /* Mask IRQs before suspending MAC. Otherwise
2344                  * the MAC stays busy and won't suspend. */
2345                 spin_lock_irq(&dev->wl->irq_lock);
2346                 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
2347                 spin_unlock_irq(&dev->wl->irq_lock);
2348                 b43_synchronize_irq(dev);
2349                 dev->irq_savedstate = tmp;
2350
2351                 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2352                 b43_write32(dev, B43_MMIO_MACCTL,
2353                             b43_read32(dev, B43_MMIO_MACCTL)
2354                             & ~B43_MACCTL_ENABLED);
2355                 /* force pci to flush the write */
2356                 b43_read32(dev, B43_MMIO_MACCTL);
2357                 for (i = 35; i; i--) {
2358                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2359                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2360                                 goto out;
2361                         udelay(10);
2362                 }
2363                 /* Hm, it seems this will take some time. Use msleep(). */
2364                 for (i = 40; i; i--) {
2365                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2366                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2367                                 goto out;
2368                         msleep(1);
2369                 }
2370                 b43err(dev->wl, "MAC suspend failed\n");
2371         }
2372 out:
2373         dev->mac_suspended++;
2374 }
2375
2376 static void b43_adjust_opmode(struct b43_wldev *dev)
2377 {
2378         struct b43_wl *wl = dev->wl;
2379         u32 ctl;
2380         u16 cfp_pretbtt;
2381
2382         ctl = b43_read32(dev, B43_MMIO_MACCTL);
2383         /* Reset status to STA infrastructure mode. */
2384         ctl &= ~B43_MACCTL_AP;
2385         ctl &= ~B43_MACCTL_KEEP_CTL;
2386         ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2387         ctl &= ~B43_MACCTL_KEEP_BAD;
2388         ctl &= ~B43_MACCTL_PROMISC;
2389         ctl &= ~B43_MACCTL_BEACPROMISC;
2390         ctl |= B43_MACCTL_INFRA;
2391
2392         if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2393                 ctl |= B43_MACCTL_AP;
2394         else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2395                 ctl &= ~B43_MACCTL_INFRA;
2396
2397         if (wl->filter_flags & FIF_CONTROL)
2398                 ctl |= B43_MACCTL_KEEP_CTL;
2399         if (wl->filter_flags & FIF_FCSFAIL)
2400                 ctl |= B43_MACCTL_KEEP_BAD;
2401         if (wl->filter_flags & FIF_PLCPFAIL)
2402                 ctl |= B43_MACCTL_KEEP_BADPLCP;
2403         if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2404                 ctl |= B43_MACCTL_PROMISC;
2405         if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2406                 ctl |= B43_MACCTL_BEACPROMISC;
2407
2408         /* Workaround: On old hardware the HW-MAC-address-filter
2409          * doesn't work properly, so always run promisc in filter
2410          * it in software. */
2411         if (dev->dev->id.revision <= 4)
2412                 ctl |= B43_MACCTL_PROMISC;
2413
2414         b43_write32(dev, B43_MMIO_MACCTL, ctl);
2415
2416         cfp_pretbtt = 2;
2417         if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2418                 if (dev->dev->bus->chip_id == 0x4306 &&
2419                     dev->dev->bus->chip_rev == 3)
2420                         cfp_pretbtt = 100;
2421                 else
2422                         cfp_pretbtt = 50;
2423         }
2424         b43_write16(dev, 0x612, cfp_pretbtt);
2425 }
2426
2427 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2428 {
2429         u16 offset;
2430
2431         if (is_ofdm) {
2432                 offset = 0x480;
2433                 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2434         } else {
2435                 offset = 0x4C0;
2436                 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2437         }
2438         b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2439                         b43_shm_read16(dev, B43_SHM_SHARED, offset));
2440 }
2441
2442 static void b43_rate_memory_init(struct b43_wldev *dev)
2443 {
2444         switch (dev->phy.type) {
2445         case B43_PHYTYPE_A:
2446         case B43_PHYTYPE_G:
2447         case B43_PHYTYPE_N:
2448                 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2449                 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2450                 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2451                 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2452                 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2453                 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2454                 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2455                 if (dev->phy.type == B43_PHYTYPE_A)
2456                         break;
2457                 /* fallthrough */
2458         case B43_PHYTYPE_B:
2459                 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2460                 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2461                 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2462                 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2463                 break;
2464         default:
2465                 B43_WARN_ON(1);
2466         }
2467 }
2468
2469 /* Set the default values for the PHY TX Control Words. */
2470 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2471 {
2472         u16 ctl = 0;
2473
2474         ctl |= B43_TXH_PHY_ENC_CCK;
2475         ctl |= B43_TXH_PHY_ANT01AUTO;
2476         ctl |= B43_TXH_PHY_TXPWR;
2477
2478         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2479         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2480         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2481 }
2482
2483 /* Set the TX-Antenna for management frames sent by firmware. */
2484 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2485 {
2486         u16 ant;
2487         u16 tmp;
2488
2489         ant = b43_antenna_to_phyctl(antenna);
2490
2491         /* For ACK/CTS */
2492         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2493         tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2494         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2495         /* For Probe Resposes */
2496         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2497         tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2498         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2499 }
2500
2501 /* This is the opposite of b43_chip_init() */
2502 static void b43_chip_exit(struct b43_wldev *dev)
2503 {
2504         b43_radio_turn_off(dev, 1);
2505         b43_gpio_cleanup(dev);
2506         /* firmware is released later */
2507 }
2508
2509 /* Initialize the chip
2510  * http://bcm-specs.sipsolutions.net/ChipInit
2511  */
2512 static int b43_chip_init(struct b43_wldev *dev)
2513 {
2514         struct b43_phy *phy = &dev->phy;
2515         int err, tmp;
2516         u32 value32, macctl;
2517         u16 value16;
2518
2519         /* Initialize the MAC control */
2520         macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2521         if (dev->phy.gmode)
2522                 macctl |= B43_MACCTL_GMODE;
2523         macctl |= B43_MACCTL_INFRA;
2524         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2525
2526         err = b43_request_firmware(dev);
2527         if (err)
2528                 goto out;
2529         err = b43_upload_microcode(dev);
2530         if (err)
2531                 goto out;       /* firmware is released later */
2532
2533         err = b43_gpio_init(dev);
2534         if (err)
2535                 goto out;       /* firmware is released later */
2536
2537         err = b43_upload_initvals(dev);
2538         if (err)
2539                 goto err_gpio_clean;
2540         b43_radio_turn_on(dev);
2541
2542         b43_write16(dev, 0x03E6, 0x0000);
2543         err = b43_phy_init(dev);
2544         if (err)
2545                 goto err_radio_off;
2546
2547         /* Select initial Interference Mitigation. */
2548         tmp = phy->interfmode;
2549         phy->interfmode = B43_INTERFMODE_NONE;
2550         b43_radio_set_interference_mitigation(dev, tmp);
2551
2552         b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2553         b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2554
2555         if (phy->type == B43_PHYTYPE_B) {
2556                 value16 = b43_read16(dev, 0x005E);
2557                 value16 |= 0x0004;
2558                 b43_write16(dev, 0x005E, value16);
2559         }
2560         b43_write32(dev, 0x0100, 0x01000000);
2561         if (dev->dev->id.revision < 5)
2562                 b43_write32(dev, 0x010C, 0x01000000);
2563
2564         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2565                     & ~B43_MACCTL_INFRA);
2566         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2567                     | B43_MACCTL_INFRA);
2568
2569         /* Probe Response Timeout value */
2570         /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2571         b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2572
2573         /* Initially set the wireless operation mode. */
2574         b43_adjust_opmode(dev);
2575
2576         if (dev->dev->id.revision < 3) {
2577                 b43_write16(dev, 0x060E, 0x0000);
2578                 b43_write16(dev, 0x0610, 0x8000);
2579                 b43_write16(dev, 0x0604, 0x0000);
2580                 b43_write16(dev, 0x0606, 0x0200);
2581         } else {
2582                 b43_write32(dev, 0x0188, 0x80000000);
2583                 b43_write32(dev, 0x018C, 0x02000000);
2584         }
2585         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2586         b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2587         b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2588         b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2589         b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2590         b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2591         b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2592
2593         value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2594         value32 |= 0x00100000;
2595         ssb_write32(dev->dev, SSB_TMSLOW, value32);
2596
2597         b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2598                     dev->dev->bus->chipco.fast_pwrup_delay);
2599
2600         err = 0;
2601         b43dbg(dev->wl, "Chip initialized\n");
2602 out:
2603         return err;
2604
2605 err_radio_off:
2606         b43_radio_turn_off(dev, 1);
2607 err_gpio_clean:
2608         b43_gpio_cleanup(dev);
2609         return err;
2610 }
2611
2612 static void b43_periodic_every120sec(struct b43_wldev *dev)
2613 {
2614         struct b43_phy *phy = &dev->phy;
2615
2616         if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2617                 return;
2618
2619         b43_mac_suspend(dev);
2620         b43_lo_g_measure(dev);
2621         b43_mac_enable(dev);
2622         if (b43_has_hardware_pctl(phy))
2623                 b43_lo_g_ctl_mark_all_unused(dev);
2624 }
2625
2626 static void b43_periodic_every60sec(struct b43_wldev *dev)
2627 {
2628         struct b43_phy *phy = &dev->phy;
2629
2630         if (phy->type != B43_PHYTYPE_G)
2631                 return;
2632         if (!b43_has_hardware_pctl(phy))
2633                 b43_lo_g_ctl_mark_all_unused(dev);
2634         if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2635                 b43_mac_suspend(dev);
2636                 b43_calc_nrssi_slope(dev);
2637                 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2638                         u8 old_chan = phy->channel;
2639
2640                         /* VCO Calibration */
2641                         if (old_chan >= 8)
2642                                 b43_radio_selectchannel(dev, 1, 0);
2643                         else
2644                                 b43_radio_selectchannel(dev, 13, 0);
2645                         b43_radio_selectchannel(dev, old_chan, 0);
2646                 }
2647                 b43_mac_enable(dev);
2648         }
2649 }
2650
2651 static void b43_periodic_every30sec(struct b43_wldev *dev)
2652 {
2653         /* Update device statistics. */
2654         b43_calculate_link_quality(dev);
2655 }
2656
2657 static void b43_periodic_every15sec(struct b43_wldev *dev)
2658 {
2659         struct b43_phy *phy = &dev->phy;
2660
2661         if (phy->type == B43_PHYTYPE_G) {
2662                 //TODO: update_aci_moving_average
2663                 if (phy->aci_enable && phy->aci_wlan_automatic) {
2664                         b43_mac_suspend(dev);
2665                         if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2666                                 if (0 /*TODO: bunch of conditions */ ) {
2667                                         b43_radio_set_interference_mitigation
2668                                             (dev, B43_INTERFMODE_MANUALWLAN);
2669                                 }
2670                         } else if (1 /*TODO*/) {
2671                                 /*
2672                                    if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2673                                    b43_radio_set_interference_mitigation(dev,
2674                                    B43_INTERFMODE_NONE);
2675                                    }
2676                                  */
2677                         }
2678                         b43_mac_enable(dev);
2679                 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2680                            phy->rev == 1) {
2681                         //TODO: implement rev1 workaround
2682                 }
2683         }
2684         b43_phy_xmitpower(dev); //FIXME: unless scanning?
2685         //TODO for APHY (temperature?)
2686
2687         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2688         wmb();
2689 }
2690
2691 static void do_periodic_work(struct b43_wldev *dev)
2692 {
2693         unsigned int state;
2694
2695         state = dev->periodic_state;
2696         if (state % 8 == 0)
2697                 b43_periodic_every120sec(dev);
2698         if (state % 4 == 0)
2699                 b43_periodic_every60sec(dev);
2700         if (state % 2 == 0)
2701                 b43_periodic_every30sec(dev);
2702         b43_periodic_every15sec(dev);
2703 }
2704
2705 /* Periodic work locking policy:
2706  *      The whole periodic work handler is protected by
2707  *      wl->mutex. If another lock is needed somewhere in the
2708  *      pwork callchain, it's aquired in-place, where it's needed.
2709  */
2710 static void b43_periodic_work_handler(struct work_struct *work)
2711 {
2712         struct b43_wldev *dev = container_of(work, struct b43_wldev,
2713                                              periodic_work.work);
2714         struct b43_wl *wl = dev->wl;
2715         unsigned long delay;
2716
2717         mutex_lock(&wl->mutex);
2718
2719         if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2720                 goto out;
2721         if (b43_debug(dev, B43_DBG_PWORK_STOP))
2722                 goto out_requeue;
2723
2724         do_periodic_work(dev);
2725
2726         dev->periodic_state++;
2727 out_requeue:
2728         if (b43_debug(dev, B43_DBG_PWORK_FAST))
2729                 delay = msecs_to_jiffies(50);
2730         else
2731                 delay = round_jiffies_relative(HZ * 15);
2732         queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2733 out:
2734         mutex_unlock(&wl->mutex);
2735 }
2736
2737 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2738 {
2739         struct delayed_work *work = &dev->periodic_work;
2740
2741         dev->periodic_state = 0;
2742         INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2743         queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2744 }
2745
2746 /* Check if communication with the device works correctly. */
2747 static int b43_validate_chipaccess(struct b43_wldev *dev)
2748 {
2749         u32 v, backup;
2750
2751         backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2752
2753         /* Check for read/write and endianness problems. */
2754         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2755         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2756                 goto error;
2757         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2758         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2759                 goto error;
2760
2761         b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2762
2763         if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2764                 /* The 32bit register shadows the two 16bit registers
2765                  * with update sideeffects. Validate this. */
2766                 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2767                 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2768                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2769                         goto error;
2770                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2771                         goto error;
2772         }
2773         b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2774
2775         v = b43_read32(dev, B43_MMIO_MACCTL);
2776         v |= B43_MACCTL_GMODE;
2777         if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2778                 goto error;
2779
2780         return 0;
2781 error:
2782         b43err(dev->wl, "Failed to validate the chipaccess\n");
2783         return -ENODEV;
2784 }
2785
2786 static void b43_security_init(struct b43_wldev *dev)
2787 {
2788         dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2789         B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2790         dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2791         /* KTP is a word address, but we address SHM bytewise.
2792          * So multiply by two.
2793          */
2794         dev->ktp *= 2;
2795         if (dev->dev->id.revision >= 5) {
2796                 /* Number of RCMTA address slots */
2797                 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2798         }
2799         b43_clear_keys(dev);
2800 }
2801
2802 static int b43_rng_read(struct hwrng *rng, u32 * data)
2803 {
2804         struct b43_wl *wl = (struct b43_wl *)rng->priv;
2805         unsigned long flags;
2806
2807         /* Don't take wl->mutex here, as it could deadlock with
2808          * hwrng internal locking. It's not needed to take
2809          * wl->mutex here, anyway. */
2810
2811         spin_lock_irqsave(&wl->irq_lock, flags);
2812         *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2813         spin_unlock_irqrestore(&wl->irq_lock, flags);
2814
2815         return (sizeof(u16));
2816 }
2817
2818 static void b43_rng_exit(struct b43_wl *wl)
2819 {
2820         if (wl->rng_initialized)
2821                 hwrng_unregister(&wl->rng);
2822 }
2823
2824 static int b43_rng_init(struct b43_wl *wl)
2825 {
2826         int err;
2827
2828         snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2829                  "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2830         wl->rng.name = wl->rng_name;
2831         wl->rng.data_read = b43_rng_read;
2832         wl->rng.priv = (unsigned long)wl;
2833         wl->rng_initialized = 1;
2834         err = hwrng_register(&wl->rng);
2835         if (err) {
2836                 wl->rng_initialized = 0;
2837                 b43err(wl, "Failed to register the random "
2838                        "number generator (%d)\n", err);
2839         }
2840
2841         return err;
2842 }
2843
2844 static int b43_op_tx(struct ieee80211_hw *hw,
2845                      struct sk_buff *skb,
2846                      struct ieee80211_tx_control *ctl)
2847 {
2848         struct b43_wl *wl = hw_to_b43_wl(hw);
2849         struct b43_wldev *dev = wl->current_dev;
2850         unsigned long flags;
2851         int err;
2852
2853         if (unlikely(skb->len < 2 + 2 + 6)) {
2854                 /* Too short, this can't be a valid frame. */
2855                 dev_kfree_skb_any(skb);
2856                 return NETDEV_TX_OK;
2857         }
2858         B43_WARN_ON(skb_shinfo(skb)->nr_frags);
2859         if (unlikely(!dev))
2860                 return NETDEV_TX_BUSY;
2861
2862         /* Transmissions on seperate queues can run concurrently. */
2863         read_lock_irqsave(&wl->tx_lock, flags);
2864
2865         err = -ENODEV;
2866         if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2867                 if (b43_using_pio_transfers(dev))
2868                         err = b43_pio_tx(dev, skb, ctl);
2869                 else
2870                         err = b43_dma_tx(dev, skb, ctl);
2871         }
2872
2873         read_unlock_irqrestore(&wl->tx_lock, flags);
2874
2875         if (unlikely(err))
2876                 return NETDEV_TX_BUSY;
2877         return NETDEV_TX_OK;
2878 }
2879
2880 /* Locking: wl->irq_lock */
2881 static void b43_qos_params_upload(struct b43_wldev *dev,
2882                                   const struct ieee80211_tx_queue_params *p,
2883                                   u16 shm_offset)
2884 {
2885         u16 params[B43_NR_QOSPARAMS];
2886         int cw_min, cw_max, aifs, bslots, tmp;
2887         unsigned int i;
2888
2889         const u16 aCWmin = 0x0001;
2890         const u16 aCWmax = 0x03FF;
2891
2892         /* Calculate the default values for the parameters, if needed. */
2893         switch (shm_offset) {
2894         case B43_QOS_VOICE:
2895                 aifs = (p->aifs == -1) ? 2 : p->aifs;
2896                 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 4 - 1) : p->cw_min;
2897                 cw_max = (p->cw_max == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_max;
2898                 break;
2899         case B43_QOS_VIDEO:
2900                 aifs = (p->aifs == -1) ? 2 : p->aifs;
2901                 cw_min = (p->cw_min == 0) ? ((aCWmin + 1) / 2 - 1) : p->cw_min;
2902                 cw_max = (p->cw_max == 0) ? aCWmin : p->cw_max;
2903                 break;
2904         case B43_QOS_BESTEFFORT:
2905                 aifs = (p->aifs == -1) ? 3 : p->aifs;
2906                 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
2907                 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
2908                 break;
2909         case B43_QOS_BACKGROUND:
2910                 aifs = (p->aifs == -1) ? 7 : p->aifs;
2911                 cw_min = (p->cw_min == 0) ? aCWmin : p->cw_min;
2912                 cw_max = (p->cw_max == 0) ? aCWmax : p->cw_max;
2913                 break;
2914         default:
2915                 B43_WARN_ON(1);
2916                 return;
2917         }
2918         if (cw_min <= 0)
2919                 cw_min = aCWmin;
2920         if (cw_max <= 0)
2921                 cw_max = aCWmin;
2922         bslots = b43_read16(dev, B43_MMIO_RNG) % cw_min;
2923
2924         memset(&params, 0, sizeof(params));
2925
2926         params[B43_QOSPARAM_TXOP] = p->txop * 32;
2927         params[B43_QOSPARAM_CWMIN] = cw_min;
2928         params[B43_QOSPARAM_CWMAX] = cw_max;
2929         params[B43_QOSPARAM_CWCUR] = cw_min;
2930         params[B43_QOSPARAM_AIFS] = aifs;
2931         params[B43_QOSPARAM_BSLOTS] = bslots;
2932         params[B43_QOSPARAM_REGGAP] = bslots + aifs;
2933
2934         for (i = 0; i < ARRAY_SIZE(params); i++) {
2935                 if (i == B43_QOSPARAM_STATUS) {
2936                         tmp = b43_shm_read16(dev, B43_SHM_SHARED,
2937                                              shm_offset + (i * 2));
2938                         /* Mark the parameters as updated. */
2939                         tmp |= 0x100;
2940                         b43_shm_write16(dev, B43_SHM_SHARED,
2941                                         shm_offset + (i * 2),
2942                                         tmp);
2943                 } else {
2944                         b43_shm_write16(dev, B43_SHM_SHARED,
2945                                         shm_offset + (i * 2),
2946                                         params[i]);
2947                 }
2948         }
2949 }
2950
2951 /* Update the QOS parameters in hardware. */
2952 static void b43_qos_update(struct b43_wldev *dev)
2953 {
2954         struct b43_wl *wl = dev->wl;
2955         struct b43_qos_params *params;
2956         unsigned long flags;
2957         unsigned int i;
2958
2959         /* Mapping of mac80211 queues to b43 SHM offsets. */
2960         static const u16 qos_shm_offsets[] = {
2961                 [0] = B43_QOS_VOICE,
2962                 [1] = B43_QOS_VIDEO,
2963                 [2] = B43_QOS_BESTEFFORT,
2964                 [3] = B43_QOS_BACKGROUND,
2965         };
2966         BUILD_BUG_ON(ARRAY_SIZE(qos_shm_offsets) != ARRAY_SIZE(wl->qos_params));
2967
2968         b43_mac_suspend(dev);
2969         spin_lock_irqsave(&wl->irq_lock, flags);
2970
2971         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
2972                 params = &(wl->qos_params[i]);
2973                 if (params->need_hw_update) {
2974                         b43_qos_params_upload(dev, &(params->p),
2975                                               qos_shm_offsets[i]);
2976                         params->need_hw_update = 0;
2977                 }
2978         }
2979
2980         spin_unlock_irqrestore(&wl->irq_lock, flags);
2981         b43_mac_enable(dev);
2982 }
2983
2984 static void b43_qos_clear(struct b43_wl *wl)
2985 {
2986         struct b43_qos_params *params;
2987         unsigned int i;
2988
2989         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
2990                 params = &(wl->qos_params[i]);
2991
2992                 memset(&(params->p), 0, sizeof(params->p));
2993                 params->p.aifs = -1;
2994                 params->need_hw_update = 1;
2995         }
2996 }
2997
2998 /* Initialize the core's QOS capabilities */
2999 static void b43_qos_init(struct b43_wldev *dev)
3000 {
3001         struct b43_wl *wl = dev->wl;
3002         unsigned int i;
3003
3004         /* Upload the current QOS parameters. */
3005         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++)
3006                 wl->qos_params[i].need_hw_update = 1;
3007         b43_qos_update(dev);
3008
3009         /* Enable QOS support. */
3010         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3011         b43_write16(dev, B43_MMIO_IFSCTL,
3012                     b43_read16(dev, B43_MMIO_IFSCTL)
3013                     | B43_MMIO_IFSCTL_USE_EDCF);
3014 }
3015
3016 static void b43_qos_update_work(struct work_struct *work)
3017 {
3018         struct b43_wl *wl = container_of(work, struct b43_wl, qos_update_work);
3019         struct b43_wldev *dev;
3020
3021         mutex_lock(&wl->mutex);
3022         dev = wl->current_dev;
3023         if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED)))
3024                 b43_qos_update(dev);
3025         mutex_unlock(&wl->mutex);
3026 }
3027
3028 static int b43_op_conf_tx(struct ieee80211_hw *hw,
3029                           int _queue,
3030                           const struct ieee80211_tx_queue_params *params)
3031 {
3032         struct b43_wl *wl = hw_to_b43_wl(hw);
3033         unsigned long flags;
3034         unsigned int queue = (unsigned int)_queue;
3035         struct b43_qos_params *p;
3036
3037         if (queue >= ARRAY_SIZE(wl->qos_params)) {
3038                 /* Queue not available or don't support setting
3039                  * params on this queue. Return success to not
3040                  * confuse mac80211. */
3041                 return 0;
3042         }
3043
3044         spin_lock_irqsave(&wl->irq_lock, flags);
3045         p = &(wl->qos_params[queue]);
3046         memcpy(&(p->p), params, sizeof(p->p));
3047         p->need_hw_update = 1;
3048         spin_unlock_irqrestore(&wl->irq_lock, flags);
3049
3050         queue_work(hw->workqueue, &wl->qos_update_work);
3051
3052         return 0;
3053 }
3054
3055 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3056                                struct ieee80211_tx_queue_stats *stats)
3057 {
3058         struct b43_wl *wl = hw_to_b43_wl(hw);
3059         struct b43_wldev *dev = wl->current_dev;
3060         unsigned long flags;
3061         int err = -ENODEV;
3062
3063         if (!dev)
3064                 goto out;
3065         spin_lock_irqsave(&wl->irq_lock, flags);
3066         if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3067                 if (b43_using_pio_transfers(dev))
3068                         b43_pio_get_tx_stats(dev, stats);
3069                 else
3070                         b43_dma_get_tx_stats(dev, stats);
3071                 err = 0;
3072         }
3073         spin_unlock_irqrestore(&wl->irq_lock, flags);
3074 out:
3075         return err;
3076 }
3077
3078 static int b43_op_get_stats(struct ieee80211_hw *hw,
3079                             struct ieee80211_low_level_stats *stats)
3080 {
3081         struct b43_wl *wl = hw_to_b43_wl(hw);
3082         unsigned long flags;
3083
3084         spin_lock_irqsave(&wl->irq_lock, flags);
3085         memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3086         spin_unlock_irqrestore(&wl->irq_lock, flags);
3087
3088         return 0;
3089 }
3090
3091 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3092 {
3093         struct ssb_device *sdev = dev->dev;
3094         u32 tmslow;
3095
3096         tmslow = ssb_read32(sdev, SSB_TMSLOW);
3097         tmslow &= ~B43_TMSLOW_GMODE;
3098         tmslow |= B43_TMSLOW_PHYRESET;
3099         tmslow |= SSB_TMSLOW_FGC;
3100         ssb_write32(sdev, SSB_TMSLOW, tmslow);
3101         msleep(1);
3102
3103         tmslow = ssb_read32(sdev, SSB_TMSLOW);
3104         tmslow &= ~SSB_TMSLOW_FGC;
3105         tmslow |= B43_TMSLOW_PHYRESET;
3106         ssb_write32(sdev, SSB_TMSLOW, tmslow);
3107         msleep(1);
3108 }
3109
3110 static const char * band_to_string(enum ieee80211_band band)
3111 {
3112         switch (band) {
3113         case IEEE80211_BAND_5GHZ:
3114                 return "5";
3115         case IEEE80211_BAND_2GHZ:
3116                 return "2.4";
3117         default:
3118                 break;
3119         }
3120         B43_WARN_ON(1);
3121         return "";
3122 }
3123
3124 /* Expects wl->mutex locked */
3125 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3126 {
3127         struct b43_wldev *up_dev = NULL;
3128         struct b43_wldev *down_dev;
3129         struct b43_wldev *d;
3130         int err;
3131         bool gmode;
3132         int prev_status;
3133
3134         /* Find a device and PHY which supports the band. */
3135         list_for_each_entry(d, &wl->devlist, list) {
3136                 switch (chan->band) {
3137                 case IEEE80211_BAND_5GHZ:
3138                         if (d->phy.supports_5ghz) {
3139                                 up_dev = d;
3140                                 gmode = 0;
3141                         }
3142                         break;
3143                 case IEEE80211_BAND_2GHZ:
3144                         if (d->phy.supports_2ghz) {
3145                                 up_dev = d;
3146                                 gmode = 1;
3147                         }
3148                         break;
3149                 default:
3150                         B43_WARN_ON(1);
3151                         return -EINVAL;
3152                 }
3153                 if (up_dev)
3154                         break;
3155         }
3156         if (!up_dev) {
3157                 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3158                        band_to_string(chan->band));
3159                 return -ENODEV;
3160         }
3161         if ((up_dev == wl->current_dev) &&
3162             (!!wl->current_dev->phy.gmode == !!gmode)) {
3163                 /* This device is already running. */
3164                 return 0;
3165         }
3166         b43dbg(wl, "Switching to %s-GHz band\n",
3167                band_to_string(chan->band));
3168         down_dev = wl->current_dev;
3169
3170         prev_status = b43_status(down_dev);
3171         /* Shutdown the currently running core. */
3172         if (prev_status >= B43_STAT_STARTED)
3173                 b43_wireless_core_stop(down_dev);
3174         if (prev_status >= B43_STAT_INITIALIZED)
3175                 b43_wireless_core_exit(down_dev);
3176
3177         if (down_dev != up_dev) {
3178                 /* We switch to a different core, so we put PHY into
3179                  * RESET on the old core. */
3180                 b43_put_phy_into_reset(down_dev);
3181         }
3182
3183         /* Now start the new core. */
3184         up_dev->phy.gmode = gmode;
3185         if (prev_status >= B43_STAT_INITIALIZED) {
3186                 err = b43_wireless_core_init(up_dev);
3187                 if (err) {
3188                         b43err(wl, "Fatal: Could not initialize device for "
3189                                "selected %s-GHz band\n",
3190                                band_to_string(chan->band));
3191                         goto init_failure;
3192                 }
3193         }
3194         if (prev_status >= B43_STAT_STARTED) {
3195                 err = b43_wireless_core_start(up_dev);
3196                 if (err) {
3197                         b43err(wl, "Fatal: Coult not start device for "
3198                                "selected %s-GHz band\n",
3199                                band_to_string(chan->band));
3200                         b43_wireless_core_exit(up_dev);
3201                         goto init_failure;
3202                 }
3203         }
3204         B43_WARN_ON(b43_status(up_dev) != prev_status);
3205
3206         wl->current_dev = up_dev;
3207
3208         return 0;
3209 init_failure:
3210         /* Whoops, failed to init the new core. No core is operating now. */
3211         wl->current_dev = NULL;
3212         return err;
3213 }
3214
3215 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3216 {
3217         struct b43_wl *wl = hw_to_b43_wl(hw);
3218         struct b43_wldev *dev;
3219         struct b43_phy *phy;
3220         unsigned long flags;
3221         int antenna;
3222         int err = 0;
3223         u32 savedirqs;
3224
3225         mutex_lock(&wl->mutex);
3226
3227         /* Switch the band (if necessary). This might change the active core. */
3228         err = b43_switch_band(wl, conf->channel);
3229         if (err)
3230                 goto out_unlock_mutex;
3231         dev = wl->current_dev;
3232         phy = &dev->phy;
3233
3234         /* Disable IRQs while reconfiguring the device.
3235          * This makes it possible to drop the spinlock throughout
3236          * the reconfiguration process. */
3237         spin_lock_irqsave(&wl->irq_lock, flags);
3238         if (b43_status(dev) < B43_STAT_STARTED) {
3239                 spin_unlock_irqrestore(&wl->irq_lock, flags);
3240                 goto out_unlock_mutex;
3241         }
3242         savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
3243         spin_unlock_irqrestore(&wl->irq_lock, flags);
3244         b43_synchronize_irq(dev);
3245
3246         /* Switch to the requested channel.
3247          * The firmware takes care of races with the TX handler. */
3248         if (conf->channel->hw_value != phy->channel)
3249                 b43_radio_selectchannel(dev, conf->channel->hw_value, 0);
3250
3251         /* Enable/Disable ShortSlot timing. */
3252         if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
3253             dev->short_slot) {
3254                 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
3255                 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
3256                         b43_short_slot_timing_enable(dev);
3257                 else
3258                         b43_short_slot_timing_disable(dev);
3259         }
3260
3261         dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3262
3263         /* Adjust the desired TX power level. */
3264         if (conf->power_level != 0) {
3265                 if (conf->power_level != phy->power_level) {
3266                         phy->power_level = conf->power_level;
3267                         b43_phy_xmitpower(dev);
3268                 }
3269         }
3270
3271         /* Antennas for RX and management frame TX. */
3272         antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
3273         b43_mgmtframe_txantenna(dev, antenna);
3274         antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
3275         b43_set_rx_antenna(dev, antenna);
3276
3277         /* Update templates for AP mode. */
3278         if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
3279                 b43_set_beacon_int(dev, conf->beacon_int);
3280
3281         if (!!conf->radio_enabled != phy->radio_on) {
3282                 if (conf->radio_enabled) {
3283                         b43_radio_turn_on(dev);
3284                         b43info(dev->wl, "Radio turned on by software\n");
3285                         if (!dev->radio_hw_enable) {
3286                                 b43info(dev->wl, "The hardware RF-kill button "
3287                                         "still turns the radio physically off. "
3288                                         "Press the button to turn it on.\n");
3289                         }
3290                 } else {
3291                         b43_radio_turn_off(dev, 0);
3292                         b43info(dev->wl, "Radio turned off by software\n");
3293                 }
3294         }
3295
3296         spin_lock_irqsave(&wl->irq_lock, flags);
3297         b43_interrupt_enable(dev, savedirqs);
3298         mmiowb();
3299         spin_unlock_irqrestore(&wl->irq_lock, flags);
3300       out_unlock_mutex:
3301         mutex_unlock(&wl->mutex);
3302
3303         return err;
3304 }
3305
3306 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3307                            const u8 *local_addr, const u8 *addr,
3308                            struct ieee80211_key_conf *key)
3309 {
3310         struct b43_wl *wl = hw_to_b43_wl(hw);
3311         struct b43_wldev *dev;
3312         unsigned long flags;
3313         u8 algorithm;
3314         u8 index;
3315         int err;
3316         DECLARE_MAC_BUF(mac);
3317
3318         if (modparam_nohwcrypt)
3319                 return -ENOSPC; /* User disabled HW-crypto */
3320
3321         mutex_lock(&wl->mutex);
3322         spin_lock_irqsave(&wl->irq_lock, flags);
3323
3324         dev = wl->current_dev;
3325         err = -ENODEV;
3326         if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3327                 goto out_unlock;
3328
3329         err = -EINVAL;
3330         switch (key->alg) {
3331         case ALG_WEP:
3332                 if (key->keylen == 5)
3333                         algorithm = B43_SEC_ALGO_WEP40;
3334                 else
3335                         algorithm = B43_SEC_ALGO_WEP104;
3336                 break;
3337         case ALG_TKIP:
3338                 algorithm = B43_SEC_ALGO_TKIP;
3339                 break;
3340         case ALG_CCMP:
3341                 algorithm = B43_SEC_ALGO_AES;
3342                 break;
3343         default:
3344                 B43_WARN_ON(1);
3345                 goto out_unlock;
3346         }
3347         index = (u8) (key->keyidx);
3348         if (index > 3)
3349                 goto out_unlock;
3350
3351         switch (cmd) {
3352         case SET_KEY:
3353                 if (algorithm == B43_SEC_ALGO_TKIP) {
3354                         /* FIXME: No TKIP hardware encryption for now. */
3355                         err = -EOPNOTSUPP;
3356                         goto out_unlock;
3357                 }
3358
3359                 if (is_broadcast_ether_addr(addr)) {
3360                         /* addr is FF:FF:FF:FF:FF:FF for default keys */
3361                         err = b43_key_write(dev, index, algorithm,
3362                                             key->key, key->keylen, NULL, key);
3363                 } else {
3364                         /*
3365                          * either pairwise key or address is 00:00:00:00:00:00
3366                          * for transmit-only keys
3367                          */
3368                         err = b43_key_write(dev, -1, algorithm,
3369                                             key->key, key->keylen, addr, key);
3370                 }
3371                 if (err)
3372                         goto out_unlock;
3373
3374                 if (algorithm == B43_SEC_ALGO_WEP40 ||
3375                     algorithm == B43_SEC_ALGO_WEP104) {
3376                         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3377                 } else {
3378                         b43_hf_write(dev,
3379                                      b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3380                 }
3381                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3382                 break;
3383         case DISABLE_KEY: {
3384                 err = b43_key_clear(dev, key->hw_key_idx);
3385                 if (err)
3386                         goto out_unlock;
3387                 break;
3388         }
3389         default:
3390                 B43_WARN_ON(1);
3391         }
3392 out_unlock:
3393         spin_unlock_irqrestore(&wl->irq_lock, flags);
3394         mutex_unlock(&wl->mutex);
3395         if (!err) {
3396                 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3397                        "mac: %s\n",
3398                        cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3399                        print_mac(mac, addr));
3400         }
3401         return err;
3402 }
3403
3404 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3405                                     unsigned int changed, unsigned int *fflags,
3406                                     int mc_count, struct dev_addr_list *mc_list)
3407 {
3408         struct b43_wl *wl = hw_to_b43_wl(hw);
3409         struct b43_wldev *dev = wl->current_dev;
3410         unsigned long flags;
3411
3412         if (!dev) {
3413                 *fflags = 0;
3414                 return;
3415         }
3416
3417         spin_lock_irqsave(&wl->irq_lock, flags);
3418         *fflags &= FIF_PROMISC_IN_BSS |
3419                   FIF_ALLMULTI |
3420                   FIF_FCSFAIL |
3421                   FIF_PLCPFAIL |
3422                   FIF_CONTROL |
3423                   FIF_OTHER_BSS |
3424                   FIF_BCN_PRBRESP_PROMISC;
3425
3426         changed &= FIF_PROMISC_IN_BSS |
3427                    FIF_ALLMULTI |
3428                    FIF_FCSFAIL |
3429                    FIF_PLCPFAIL |
3430                    FIF_CONTROL |
3431                    FIF_OTHER_BSS |
3432                    FIF_BCN_PRBRESP_PROMISC;
3433
3434         wl->filter_flags = *fflags;
3435
3436         if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3437                 b43_adjust_opmode(dev);
3438         spin_unlock_irqrestore(&wl->irq_lock, flags);
3439 }
3440
3441 static int b43_op_config_interface(struct ieee80211_hw *hw,
3442                                    struct ieee80211_vif *vif,
3443                                    struct ieee80211_if_conf *conf)
3444 {
3445         struct b43_wl *wl = hw_to_b43_wl(hw);
3446         struct b43_wldev *dev = wl->current_dev;
3447         unsigned long flags;
3448
3449         if (!dev)
3450                 return -ENODEV;
3451         mutex_lock(&wl->mutex);
3452         spin_lock_irqsave(&wl->irq_lock, flags);
3453         B43_WARN_ON(wl->vif != vif);
3454         if (conf->bssid)
3455                 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3456         else
3457                 memset(wl->bssid, 0, ETH_ALEN);
3458         if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3459                 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
3460                         B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
3461                         b43_set_ssid(dev, conf->ssid, conf->ssid_len);
3462                         if (conf->beacon) {
3463                                 b43_update_templates(wl, conf->beacon,
3464                                                      conf->beacon_control);
3465                         }
3466                 }
3467                 b43_write_mac_bssid_templates(dev);
3468         }
3469         spin_unlock_irqrestore(&wl->irq_lock, flags);
3470         mutex_unlock(&wl->mutex);
3471
3472         return 0;
3473 }
3474
3475 /* Locking: wl->mutex */
3476 static void b43_wireless_core_stop(struct b43_wldev *dev)
3477 {
3478         struct b43_wl *wl = dev->wl;
3479         unsigned long flags;
3480
3481         if (b43_status(dev) < B43_STAT_STARTED)
3482                 return;
3483
3484         /* Disable and sync interrupts. We must do this before than
3485          * setting the status to INITIALIZED, as the interrupt handler
3486          * won't care about IRQs then. */
3487         spin_lock_irqsave(&wl->irq_lock, flags);
3488         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3489         b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3490         spin_unlock_irqrestore(&wl->irq_lock, flags);
3491         b43_synchronize_irq(dev);
3492
3493         write_lock_irqsave(&wl->tx_lock, flags);
3494         b43_set_status(dev, B43_STAT_INITIALIZED);
3495         write_unlock_irqrestore(&wl->tx_lock, flags);
3496
3497         b43_pio_stop(dev);
3498         mutex_unlock(&wl->mutex);
3499         /* Must unlock as it would otherwise deadlock. No races here.
3500          * Cancel the possibly running self-rearming periodic work. */
3501         cancel_delayed_work_sync(&dev->periodic_work);
3502         mutex_lock(&wl->mutex);
3503
3504         b43_mac_suspend(dev);
3505         free_irq(dev->dev->irq, dev);
3506         b43dbg(wl, "Wireless interface stopped\n");
3507 }
3508
3509 /* Locking: wl->mutex */
3510 static int b43_wireless_core_start(struct b43_wldev *dev)
3511 {
3512         int err;
3513
3514         B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3515
3516         drain_txstatus_queue(dev);
3517         err = request_irq(dev->dev->irq, b43_interrupt_handler,
3518                           IRQF_SHARED, KBUILD_MODNAME, dev);
3519         if (err) {
3520                 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3521                 goto out;
3522         }
3523
3524         /* We are ready to run. */
3525         b43_set_status(dev, B43_STAT_STARTED);
3526
3527         /* Start data flow (TX/RX). */
3528         b43_mac_enable(dev);
3529         b43_interrupt_enable(dev, dev->irq_savedstate);
3530         ieee80211_start_queues(dev->wl->hw);
3531
3532         /* Start maintainance work */
3533         b43_periodic_tasks_setup(dev);
3534
3535         b43dbg(dev->wl, "Wireless interface started\n");
3536       out:
3537         return err;
3538 }
3539
3540 /* Get PHY and RADIO versioning numbers */
3541 static int b43_phy_versioning(struct b43_wldev *dev)
3542 {
3543         struct b43_phy *phy = &dev->phy;
3544         u32 tmp;
3545         u8 analog_type;
3546         u8 phy_type;
3547         u8 phy_rev;
3548         u16 radio_manuf;
3549         u16 radio_ver;
3550         u16 radio_rev;
3551         int unsupported = 0;
3552
3553         /* Get PHY versioning */
3554         tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3555         analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3556         phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3557         phy_rev = (tmp & B43_PHYVER_VERSION);
3558         switch (phy_type) {
3559         case B43_PHYTYPE_A:
3560                 if (phy_rev >= 4)
3561                         unsupported = 1;
3562                 break;
3563         case B43_PHYTYPE_B:
3564                 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3565                     && phy_rev != 7)
3566                         unsupported = 1;
3567                 break;
3568         case B43_PHYTYPE_G:
3569                 if (phy_rev > 9)
3570                         unsupported = 1;
3571                 break;
3572 #ifdef CONFIG_B43_NPHY
3573         case B43_PHYTYPE_N:
3574                 if (phy_rev > 1)
3575                         unsupported = 1;
3576                 break;
3577 #endif
3578         default:
3579                 unsupported = 1;
3580         };
3581         if (unsupported) {
3582                 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3583                        "(Analog %u, Type %u, Revision %u)\n",
3584                        analog_type, phy_type, phy_rev);
3585                 return -EOPNOTSUPP;
3586         }
3587         b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3588                analog_type, phy_type, phy_rev);
3589
3590         /* Get RADIO versioning */
3591         if (dev->dev->bus->chip_id == 0x4317) {
3592                 if (dev->dev->bus->chip_rev == 0)
3593                         tmp = 0x3205017F;
3594                 else if (dev->dev->bus->chip_rev == 1)
3595                         tmp = 0x4205017F;
3596                 else
3597                         tmp = 0x5205017F;
3598         } else {
3599                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3600                 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3601                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3602                 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3603         }
3604         radio_manuf = (tmp & 0x00000FFF);
3605         radio_ver = (tmp & 0x0FFFF000) >> 12;
3606         radio_rev = (tmp & 0xF0000000) >> 28;
3607         if (radio_manuf != 0x17F /* Broadcom */)
3608                 unsupported = 1;
3609         switch (phy_type) {
3610         case B43_PHYTYPE_A:
3611                 if (radio_ver != 0x2060)
3612                         unsupported = 1;
3613                 if (radio_rev != 1)
3614                         unsupported = 1;
3615                 if (radio_manuf != 0x17F)
3616                         unsupported = 1;
3617                 break;
3618         case B43_PHYTYPE_B:
3619                 if ((radio_ver & 0xFFF0) != 0x2050)
3620                         unsupported = 1;
3621                 break;
3622         case B43_PHYTYPE_G:
3623                 if (radio_ver != 0x2050)
3624                         unsupported = 1;
3625                 break;
3626         case B43_PHYTYPE_N:
3627                 if (radio_ver != 0x2055)
3628                         unsupported = 1;
3629                 break;
3630         default:
3631                 B43_WARN_ON(1);
3632         }
3633         if (unsupported) {
3634                 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3635                        "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3636                        radio_manuf, radio_ver, radio_rev);
3637                 return -EOPNOTSUPP;
3638         }
3639         b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3640                radio_manuf, radio_ver, radio_rev);
3641
3642         phy->radio_manuf = radio_manuf;
3643         phy->radio_ver = radio_ver;
3644         phy->radio_rev = radio_rev;
3645
3646         phy->analog = analog_type;
3647         phy->type = phy_type;
3648         phy->rev = phy_rev;
3649
3650         return 0;
3651 }
3652
3653 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3654                                       struct b43_phy *phy)
3655 {
3656         struct b43_txpower_lo_control *lo;
3657         int i;
3658
3659         memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3660         memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3661
3662         phy->aci_enable = 0;
3663         phy->aci_wlan_automatic = 0;
3664         phy->aci_hw_rssi = 0;
3665
3666         phy->radio_off_context.valid = 0;
3667
3668         lo = phy->lo_control;
3669         if (lo) {
3670                 memset(lo, 0, sizeof(*(phy->lo_control)));
3671                 lo->rebuild = 1;
3672                 lo->tx_bias = 0xFF;
3673         }
3674         phy->max_lb_gain = 0;
3675         phy->trsw_rx_gain = 0;
3676         phy->txpwr_offset = 0;
3677
3678         /* NRSSI */
3679         phy->nrssislope = 0;
3680         for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3681                 phy->nrssi[i] = -1000;
3682         for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3683                 phy->nrssi_lt[i] = i;
3684
3685         phy->lofcal = 0xFFFF;
3686         phy->initval = 0xFFFF;
3687
3688         phy->interfmode = B43_INTERFMODE_NONE;
3689         phy->channel = 0xFF;
3690
3691         phy->hardware_power_control = !!modparam_hwpctl;
3692
3693         /* PHY TX errors counter. */
3694         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3695
3696         /* OFDM-table address caching. */
3697         phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3698 }
3699
3700 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3701 {
3702         dev->dfq_valid = 0;
3703
3704         /* Assume the radio is enabled. If it's not enabled, the state will
3705          * immediately get fixed on the first periodic work run. */
3706         dev->radio_hw_enable = 1;
3707
3708         /* Stats */
3709         memset(&dev->stats, 0, sizeof(dev->stats));
3710
3711         setup_struct_phy_for_init(dev, &dev->phy);
3712
3713         /* IRQ related flags */
3714         dev->irq_reason = 0;
3715         memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3716         dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3717
3718         dev->mac_suspended = 1;
3719
3720         /* Noise calculation context */
3721         memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3722 }
3723
3724 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3725 {
3726         struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3727         u64 hf;
3728
3729         if (!modparam_btcoex)
3730                 return;
3731         if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3732                 return;
3733         if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3734                 return;
3735
3736         hf = b43_hf_read(dev);
3737         if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3738                 hf |= B43_HF_BTCOEXALT;
3739         else
3740                 hf |= B43_HF_BTCOEX;
3741         b43_hf_write(dev, hf);
3742 }
3743
3744 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3745 {
3746         if (!modparam_btcoex)
3747                 return;
3748         //TODO
3749 }
3750
3751 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3752 {
3753 #ifdef CONFIG_SSB_DRIVER_PCICORE
3754         struct ssb_bus *bus = dev->dev->bus;
3755         u32 tmp;
3756
3757         if (bus->pcicore.dev &&
3758             bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3759             bus->pcicore.dev->id.revision <= 5) {
3760                 /* IMCFGLO timeouts workaround. */
3761                 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3762                 tmp &= ~SSB_IMCFGLO_REQTO;
3763                 tmp &= ~SSB_IMCFGLO_SERTO;
3764                 switch (bus->bustype) {
3765                 case SSB_BUSTYPE_PCI:
3766                 case SSB_BUSTYPE_PCMCIA:
3767                         tmp |= 0x32;
3768                         break;
3769                 case SSB_BUSTYPE_SSB:
3770                         tmp |= 0x53;
3771                         break;
3772                 }
3773                 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3774         }
3775 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3776 }
3777
3778 /* Write the short and long frame retry limit values. */
3779 static void b43_set_retry_limits(struct b43_wldev *dev,
3780                                  unsigned int short_retry,
3781                                  unsigned int long_retry)
3782 {
3783         /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3784          * the chip-internal counter. */
3785         short_retry = min(short_retry, (unsigned int)0xF);
3786         long_retry = min(long_retry, (unsigned int)0xF);
3787
3788         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3789                         short_retry);
3790         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3791                         long_retry);
3792 }
3793
3794 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
3795 {
3796         u16 pu_delay;
3797
3798         /* The time value is in microseconds. */
3799         if (dev->phy.type == B43_PHYTYPE_A)
3800                 pu_delay = 3700;
3801         else
3802                 pu_delay = 1050;
3803         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS) || idle)
3804                 pu_delay = 500;
3805         if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3806                 pu_delay = max(pu_delay, (u16)2400);
3807
3808         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
3809 }
3810
3811 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3812 static void b43_set_pretbtt(struct b43_wldev *dev)
3813 {
3814         u16 pretbtt;
3815
3816         /* The time value is in microseconds. */
3817         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) {
3818                 pretbtt = 2;
3819         } else {
3820                 if (dev->phy.type == B43_PHYTYPE_A)
3821                         pretbtt = 120;
3822                 else
3823                         pretbtt = 250;
3824         }
3825         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
3826         b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
3827 }
3828
3829 /* Shutdown a wireless core */
3830 /* Locking: wl->mutex */
3831 static void b43_wireless_core_exit(struct b43_wldev *dev)
3832 {
3833         struct b43_phy *phy = &dev->phy;
3834         u32 macctl;
3835
3836         B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3837         if (b43_status(dev) != B43_STAT_INITIALIZED)
3838                 return;
3839         b43_set_status(dev, B43_STAT_UNINIT);
3840
3841         /* Stop the microcode PSM. */
3842         macctl = b43_read32(dev, B43_MMIO_MACCTL);
3843         macctl &= ~B43_MACCTL_PSM_RUN;
3844         macctl |= B43_MACCTL_PSM_JMP0;
3845         b43_write32(dev, B43_MMIO_MACCTL, macctl);
3846
3847         if (!dev->suspend_in_progress) {
3848                 b43_leds_exit(dev);
3849                 b43_rng_exit(dev->wl);
3850         }
3851         b43_dma_free(dev);
3852         b43_pio_free(dev);
3853         b43_chip_exit(dev);
3854         b43_radio_turn_off(dev, 1);
3855         b43_switch_analog(dev, 0);
3856         if (phy->dyn_tssi_tbl)
3857                 kfree(phy->tssi2dbm);
3858         kfree(phy->lo_control);
3859         phy->lo_control = NULL;
3860         if (dev->wl->current_beacon) {
3861                 dev_kfree_skb_any(dev->wl->current_beacon);
3862                 dev->wl->current_beacon = NULL;
3863         }
3864
3865         ssb_device_disable(dev->dev, 0);
3866         ssb_bus_may_powerdown(dev->dev->bus);
3867 }
3868
3869 /* Initialize a wireless core */
3870 static int b43_wireless_core_init(struct b43_wldev *dev)
3871 {
3872         struct b43_wl *wl = dev->wl;
3873         struct ssb_bus *bus = dev->dev->bus;
3874         struct ssb_sprom *sprom = &bus->sprom;
3875         struct b43_phy *phy = &dev->phy;
3876         int err;
3877         u64 hf;
3878         u32 tmp;
3879
3880         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3881
3882         err = ssb_bus_powerup(bus, 0);
3883         if (err)
3884                 goto out;
3885         if (!ssb_device_is_enabled(dev->dev)) {
3886                 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3887                 b43_wireless_core_reset(dev, tmp);
3888         }
3889
3890         if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3891                 phy->lo_control =
3892                     kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3893                 if (!phy->lo_control) {
3894                         err = -ENOMEM;
3895                         goto err_busdown;
3896                 }
3897         }
3898         setup_struct_wldev_for_init(dev);
3899
3900         err = b43_phy_init_tssi2dbm_table(dev);
3901         if (err)
3902                 goto err_kfree_lo_control;
3903
3904         /* Enable IRQ routing to this device. */
3905         ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3906
3907         b43_imcfglo_timeouts_workaround(dev);
3908         b43_bluetooth_coext_disable(dev);
3909         b43_phy_early_init(dev);
3910         err = b43_chip_init(dev);
3911         if (err)
3912                 goto err_kfree_tssitbl;
3913         b43_shm_write16(dev, B43_SHM_SHARED,
3914                         B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3915         hf = b43_hf_read(dev);
3916         if (phy->type == B43_PHYTYPE_G) {
3917                 hf |= B43_HF_SYMW;
3918                 if (phy->rev == 1)
3919                         hf |= B43_HF_GDCW;
3920                 if (sprom->boardflags_lo & B43_BFL_PACTRL)
3921                         hf |= B43_HF_OFDMPABOOST;
3922         } else if (phy->type == B43_PHYTYPE_B) {
3923                 hf |= B43_HF_SYMW;
3924                 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3925                         hf &= ~B43_HF_GDCW;
3926         }
3927         b43_hf_write(dev, hf);
3928
3929         b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
3930                              B43_DEFAULT_LONG_RETRY_LIMIT);
3931         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3932         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3933
3934         /* Disable sending probe responses from firmware.
3935          * Setting the MaxTime to one usec will always trigger
3936          * a timeout, so we never send any probe resp.
3937          * A timeout of zero is infinite. */
3938         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3939
3940         b43_rate_memory_init(dev);
3941         b43_set_phytxctl_defaults(dev);
3942
3943         /* Minimum Contention Window */
3944         if (phy->type == B43_PHYTYPE_B) {
3945                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3946         } else {
3947                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3948         }
3949         /* Maximum Contention Window */
3950         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3951
3952         if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
3953                 dev->__using_pio_transfers = 1;
3954                 err = b43_pio_init(dev);
3955         } else {
3956                 dev->__using_pio_transfers = 0;
3957                 err = b43_dma_init(dev);
3958         }
3959         if (err)
3960                 goto err_chip_exit;
3961         b43_qos_init(dev);
3962         b43_set_synth_pu_delay(dev, 1);
3963         b43_bluetooth_coext_enable(dev);
3964
3965         ssb_bus_powerup(bus, 1);        /* Enable dynamic PCTL */
3966         b43_upload_card_macaddress(dev);
3967         b43_security_init(dev);
3968         if (!dev->suspend_in_progress)
3969                 b43_rng_init(wl);
3970
3971         b43_set_status(dev, B43_STAT_INITIALIZED);
3972
3973         if (!dev->suspend_in_progress)
3974                 b43_leds_init(dev);
3975 out:
3976         return err;
3977
3978       err_chip_exit:
3979         b43_chip_exit(dev);
3980       err_kfree_tssitbl:
3981         if (phy->dyn_tssi_tbl)
3982                 kfree(phy->tssi2dbm);
3983       err_kfree_lo_control:
3984         kfree(phy->lo_control);
3985         phy->lo_control = NULL;
3986       err_busdown:
3987         ssb_bus_may_powerdown(bus);
3988         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3989         return err;
3990 }
3991
3992 static int b43_op_add_interface(struct ieee80211_hw *hw,
3993                                 struct ieee80211_if_init_conf *conf)
3994 {
3995         struct b43_wl *wl = hw_to_b43_wl(hw);
3996         struct b43_wldev *dev;
3997         unsigned long flags;
3998         int err = -EOPNOTSUPP;
3999
4000         /* TODO: allow WDS/AP devices to coexist */
4001
4002         if (conf->type != IEEE80211_IF_TYPE_AP &&
4003             conf->type != IEEE80211_IF_TYPE_STA &&
4004             conf->type != IEEE80211_IF_TYPE_WDS &&
4005             conf->type != IEEE80211_IF_TYPE_IBSS)
4006                 return -EOPNOTSUPP;
4007
4008         mutex_lock(&wl->mutex);
4009         if (wl->operating)
4010                 goto out_mutex_unlock;
4011
4012         b43dbg(wl, "Adding Interface type %d\n", conf->type);
4013
4014         dev = wl->current_dev;
4015         wl->operating = 1;
4016         wl->vif = conf->vif;
4017         wl->if_type = conf->type;
4018         memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4019
4020         spin_lock_irqsave(&wl->irq_lock, flags);
4021         b43_adjust_opmode(dev);
4022         b43_set_pretbtt(dev);
4023         b43_set_synth_pu_delay(dev, 0);
4024         b43_upload_card_macaddress(dev);
4025         spin_unlock_irqrestore(&wl->irq_lock, flags);
4026
4027         err = 0;
4028  out_mutex_unlock:
4029         mutex_unlock(&wl->mutex);
4030
4031         return err;
4032 }
4033
4034 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4035                                     struct ieee80211_if_init_conf *conf)
4036 {
4037         struct b43_wl *wl = hw_to_b43_wl(hw);
4038         struct b43_wldev *dev = wl->current_dev;
4039         unsigned long flags;
4040
4041         b43dbg(wl, "Removing Interface type %d\n", conf->type);
4042
4043         mutex_lock(&wl->mutex);
4044
4045         B43_WARN_ON(!wl->operating);
4046         B43_WARN_ON(wl->vif != conf->vif);
4047         wl->vif = NULL;
4048
4049         wl->operating = 0;
4050
4051         spin_lock_irqsave(&wl->irq_lock, flags);
4052         b43_adjust_opmode(dev);
4053         memset(wl->mac_addr, 0, ETH_ALEN);
4054         b43_upload_card_macaddress(dev);
4055         spin_unlock_irqrestore(&wl->irq_lock, flags);
4056
4057         mutex_unlock(&wl->mutex);
4058 }
4059
4060 static int b43_op_start(struct ieee80211_hw *hw)
4061 {
4062         struct b43_wl *wl = hw_to_b43_wl(hw);
4063         struct b43_wldev *dev = wl->current_dev;
4064         int did_init = 0;
4065         int err = 0;
4066         bool do_rfkill_exit = 0;
4067
4068         /* Kill all old instance specific information to make sure
4069          * the card won't use it in the short timeframe between start
4070          * and mac80211 reconfiguring it. */
4071         memset(wl->bssid, 0, ETH_ALEN);
4072         memset(wl->mac_addr, 0, ETH_ALEN);
4073         wl->filter_flags = 0;
4074         wl->radiotap_enabled = 0;
4075         b43_qos_clear(wl);
4076
4077         /* First register RFkill.
4078          * LEDs that are registered later depend on it. */
4079         b43_rfkill_init(dev);
4080
4081         mutex_lock(&wl->mutex);
4082
4083         if (b43_status(dev) < B43_STAT_INITIALIZED) {
4084                 err = b43_wireless_core_init(dev);
4085                 if (err) {
4086                         do_rfkill_exit = 1;
4087                         goto out_mutex_unlock;
4088                 }
4089                 did_init = 1;
4090         }
4091
4092         if (b43_status(dev) < B43_STAT_STARTED) {
4093                 err = b43_wireless_core_start(dev);
4094                 if (err) {
4095                         if (did_init)
4096                                 b43_wireless_core_exit(dev);
4097                         do_rfkill_exit = 1;
4098                         goto out_mutex_unlock;
4099                 }
4100         }
4101
4102  out_mutex_unlock:
4103         mutex_unlock(&wl->mutex);
4104
4105         if (do_rfkill_exit)
4106                 b43_rfkill_exit(dev);
4107
4108         return err;
4109 }
4110
4111 static void b43_op_stop(struct ieee80211_hw *hw)
4112 {
4113         struct b43_wl *wl = hw_to_b43_wl(hw);
4114         struct b43_wldev *dev = wl->current_dev;
4115
4116         b43_rfkill_exit(dev);
4117         cancel_work_sync(&(wl->qos_update_work));
4118         cancel_work_sync(&(wl->beacon_update_trigger));
4119
4120         mutex_lock(&wl->mutex);
4121         if (b43_status(dev) >= B43_STAT_STARTED)
4122                 b43_wireless_core_stop(dev);
4123         b43_wireless_core_exit(dev);
4124         mutex_unlock(&wl->mutex);
4125 }
4126
4127 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
4128                                   u32 short_retry_limit, u32 long_retry_limit)
4129 {
4130         struct b43_wl *wl = hw_to_b43_wl(hw);
4131         struct b43_wldev *dev;
4132         int err = 0;
4133
4134         mutex_lock(&wl->mutex);
4135         dev = wl->current_dev;
4136         if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
4137                 err = -ENODEV;
4138                 goto out_unlock;
4139         }
4140         b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
4141 out_unlock:
4142         mutex_unlock(&wl->mutex);
4143
4144         return err;
4145 }
4146
4147 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set)
4148 {
4149         struct b43_wl *wl = hw_to_b43_wl(hw);
4150         struct sk_buff *beacon;
4151         unsigned long flags;
4152         struct ieee80211_tx_control txctl;
4153
4154         /* We could modify the existing beacon and set the aid bit in
4155          * the TIM field, but that would probably require resizing and
4156          * moving of data within the beacon template.
4157          * Simply request a new beacon and let mac80211 do the hard work. */
4158         beacon = ieee80211_beacon_get(hw, wl->vif, &txctl);
4159         if (unlikely(!beacon))
4160                 return -ENOMEM;
4161         spin_lock_irqsave(&wl->irq_lock, flags);
4162         b43_update_templates(wl, beacon, &txctl);
4163         spin_unlock_irqrestore(&wl->irq_lock, flags);
4164
4165         return 0;
4166 }
4167
4168 static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw,
4169                                      struct sk_buff *beacon,
4170                                      struct ieee80211_tx_control *ctl)
4171 {
4172         struct b43_wl *wl = hw_to_b43_wl(hw);
4173         unsigned long flags;
4174
4175         spin_lock_irqsave(&wl->irq_lock, flags);
4176         b43_update_templates(wl, beacon, ctl);
4177         spin_unlock_irqrestore(&wl->irq_lock, flags);
4178
4179         return 0;
4180 }
4181
4182 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4183                               struct ieee80211_vif *vif,
4184                               enum sta_notify_cmd notify_cmd,
4185                               const u8 *addr)
4186 {
4187         struct b43_wl *wl = hw_to_b43_wl(hw);
4188
4189         B43_WARN_ON(!vif || wl->vif != vif);
4190 }
4191
4192 static const struct ieee80211_ops b43_hw_ops = {
4193         .tx                     = b43_op_tx,
4194         .conf_tx                = b43_op_conf_tx,
4195         .add_interface          = b43_op_add_interface,
4196         .remove_interface       = b43_op_remove_interface,
4197         .config                 = b43_op_config,
4198         .config_interface       = b43_op_config_interface,
4199         .configure_filter       = b43_op_configure_filter,
4200         .set_key                = b43_op_set_key,
4201         .get_stats              = b43_op_get_stats,
4202         .get_tx_stats           = b43_op_get_tx_stats,
4203         .start                  = b43_op_start,
4204         .stop                   = b43_op_stop,
4205         .set_retry_limit        = b43_op_set_retry_limit,
4206         .set_tim                = b43_op_beacon_set_tim,
4207         .beacon_update          = b43_op_ibss_beacon_update,
4208         .sta_notify             = b43_op_sta_notify,
4209 };
4210
4211 /* Hard-reset the chip. Do not call this directly.
4212  * Use b43_controller_restart()
4213  */
4214 static void b43_chip_reset(struct work_struct *work)
4215 {
4216         struct b43_wldev *dev =
4217             container_of(work, struct b43_wldev, restart_work);
4218         struct b43_wl *wl = dev->wl;
4219         int err = 0;
4220         int prev_status;
4221
4222         mutex_lock(&wl->mutex);
4223
4224         prev_status = b43_status(dev);
4225         /* Bring the device down... */
4226         if (prev_status >= B43_STAT_STARTED)
4227                 b43_wireless_core_stop(dev);
4228         if (prev_status >= B43_STAT_INITIALIZED)
4229                 b43_wireless_core_exit(dev);
4230
4231         /* ...and up again. */
4232         if (prev_status >= B43_STAT_INITIALIZED) {
4233                 err = b43_wireless_core_init(dev);
4234                 if (err)
4235                         goto out;
4236         }
4237         if (prev_status >= B43_STAT_STARTED) {
4238                 err = b43_wireless_core_start(dev);
4239                 if (err) {
4240                         b43_wireless_core_exit(dev);
4241                         goto out;
4242                 }
4243         }
4244       out:
4245         mutex_unlock(&wl->mutex);
4246         if (err)
4247                 b43err(wl, "Controller restart FAILED\n");
4248         else
4249                 b43info(wl, "Controller restarted\n");
4250 }
4251
4252 static int b43_setup_bands(struct b43_wldev *dev,
4253                            bool have_2ghz_phy, bool have_5ghz_phy)
4254 {
4255         struct ieee80211_hw *hw = dev->wl->hw;
4256
4257         if (have_2ghz_phy)
4258                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4259         if (dev->phy.type == B43_PHYTYPE_N) {
4260                 if (have_5ghz_phy)
4261                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4262         } else {
4263                 if (have_5ghz_phy)
4264                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4265         }
4266
4267         dev->phy.supports_2ghz = have_2ghz_phy;
4268         dev->phy.supports_5ghz = have_5ghz_phy;
4269
4270         return 0;
4271 }
4272
4273 static void b43_wireless_core_detach(struct b43_wldev *dev)
4274 {
4275         /* We release firmware that late to not be required to re-request
4276          * is all the time when we reinit the core. */
4277         b43_release_firmware(dev);
4278 }
4279
4280 static int b43_wireless_core_attach(struct b43_wldev *dev)
4281 {
4282         struct b43_wl *wl = dev->wl;
4283         struct ssb_bus *bus = dev->dev->bus;
4284         struct pci_dev *pdev = bus->host_pci;
4285         int err;
4286         bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4287         u32 tmp;
4288
4289         /* Do NOT do any device initialization here.
4290          * Do it in wireless_core_init() instead.
4291          * This function is for gathering basic information about the HW, only.
4292          * Also some structs may be set up here. But most likely you want to have
4293          * that in core_init(), too.
4294          */
4295
4296         err = ssb_bus_powerup(bus, 0);
4297         if (err) {
4298                 b43err(wl, "Bus powerup failed\n");
4299                 goto out;
4300         }
4301         /* Get the PHY type. */
4302         if (dev->dev->id.revision >= 5) {
4303                 u32 tmshigh;
4304
4305                 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4306                 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4307                 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4308         } else
4309                 B43_WARN_ON(1);
4310
4311         dev->phy.gmode = have_2ghz_phy;
4312         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4313         b43_wireless_core_reset(dev, tmp);
4314
4315         err = b43_phy_versioning(dev);
4316         if (err)
4317                 goto err_powerdown;
4318         /* Check if this device supports multiband. */
4319         if (!pdev ||
4320             (pdev->device != 0x4312 &&
4321              pdev->device != 0x4319 && pdev->device != 0x4324)) {
4322                 /* No multiband support. */
4323                 have_2ghz_phy = 0;
4324                 have_5ghz_phy = 0;
4325                 switch (dev->phy.type) {
4326                 case B43_PHYTYPE_A:
4327                         have_5ghz_phy = 1;
4328                         break;
4329                 case B43_PHYTYPE_G:
4330                 case B43_PHYTYPE_N:
4331                         have_2ghz_phy = 1;
4332                         break;
4333                 default:
4334                         B43_WARN_ON(1);
4335                 }
4336         }
4337         if (dev->phy.type == B43_PHYTYPE_A) {
4338                 /* FIXME */
4339                 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4340                 err = -EOPNOTSUPP;
4341                 goto err_powerdown;
4342         }
4343         if (1 /* disable A-PHY */) {
4344                 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4345                 if (dev->phy.type != B43_PHYTYPE_N) {
4346                         have_2ghz_phy = 1;
4347                         have_5ghz_phy = 0;
4348                 }
4349         }
4350
4351         dev->phy.gmode = have_2ghz_phy;
4352         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4353         b43_wireless_core_reset(dev, tmp);
4354
4355         err = b43_validate_chipaccess(dev);
4356         if (err)
4357                 goto err_powerdown;
4358         err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4359         if (err)
4360                 goto err_powerdown;
4361
4362         /* Now set some default "current_dev" */
4363         if (!wl->current_dev)
4364                 wl->current_dev = dev;
4365         INIT_WORK(&dev->restart_work, b43_chip_reset);
4366
4367         b43_radio_turn_off(dev, 1);
4368         b43_switch_analog(dev, 0);
4369         ssb_device_disable(dev->dev, 0);
4370         ssb_bus_may_powerdown(bus);
4371
4372 out:
4373         return err;
4374
4375 err_powerdown:
4376         ssb_bus_may_powerdown(bus);
4377         return err;
4378 }
4379
4380 static void b43_one_core_detach(struct ssb_device *dev)
4381 {
4382         struct b43_wldev *wldev;
4383         struct b43_wl *wl;
4384
4385         wldev = ssb_get_drvdata(dev);
4386         wl = wldev->wl;
4387         cancel_work_sync(&wldev->restart_work);
4388         b43_debugfs_remove_device(wldev);
4389         b43_wireless_core_detach(wldev);
4390         list_del(&wldev->list);
4391         wl->nr_devs--;
4392         ssb_set_drvdata(dev, NULL);
4393         kfree(wldev);
4394 }
4395
4396 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4397 {
4398         struct b43_wldev *wldev;
4399         struct pci_dev *pdev;
4400         int err = -ENOMEM;
4401
4402         if (!list_empty(&wl->devlist)) {
4403                 /* We are not the first core on this chip. */
4404                 pdev = dev->bus->host_pci;
4405                 /* Only special chips support more than one wireless
4406                  * core, although some of the other chips have more than
4407                  * one wireless core as well. Check for this and
4408                  * bail out early.
4409                  */
4410                 if (!pdev ||
4411                     ((pdev->device != 0x4321) &&
4412                      (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4413                         b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4414                         return -ENODEV;
4415                 }
4416         }
4417
4418         wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4419         if (!wldev)
4420                 goto out;
4421
4422         wldev->dev = dev;
4423         wldev->wl = wl;
4424         b43_set_status(wldev, B43_STAT_UNINIT);
4425         wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4426         tasklet_init(&wldev->isr_tasklet,
4427                      (void (*)(unsigned long))b43_interrupt_tasklet,
4428                      (unsigned long)wldev);
4429         INIT_LIST_HEAD(&wldev->list);
4430
4431         err = b43_wireless_core_attach(wldev);
4432         if (err)
4433                 goto err_kfree_wldev;
4434
4435         list_add(&wldev->list, &wl->devlist);
4436         wl->nr_devs++;
4437         ssb_set_drvdata(dev, wldev);
4438         b43_debugfs_add_device(wldev);
4439
4440       out:
4441         return err;
4442
4443       err_kfree_wldev:
4444         kfree(wldev);
4445         return err;
4446 }
4447
4448 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice)         ( \
4449         (pdev->vendor == PCI_VENDOR_ID_##_vendor) &&                    \
4450         (pdev->device == _device) &&                                    \
4451         (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) &&       \
4452         (pdev->subsystem_device == _subdevice)                          )
4453
4454 static void b43_sprom_fixup(struct ssb_bus *bus)
4455 {
4456         struct pci_dev *pdev;
4457
4458         /* boardflags workarounds */
4459         if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4460             bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4461                 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4462         if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4463             bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4464                 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4465         if (bus->bustype == SSB_BUSTYPE_PCI) {
4466                 pdev = bus->host_pci;
4467                 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4468                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4469                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013))
4470                         bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4471         }
4472 }
4473
4474 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4475 {
4476         struct ieee80211_hw *hw = wl->hw;
4477
4478         ssb_set_devtypedata(dev, NULL);
4479         ieee80211_free_hw(hw);
4480 }
4481
4482 static int b43_wireless_init(struct ssb_device *dev)
4483 {
4484         struct ssb_sprom *sprom = &dev->bus->sprom;
4485         struct ieee80211_hw *hw;
4486         struct b43_wl *wl;
4487         int err = -ENOMEM;
4488
4489         b43_sprom_fixup(dev->bus);
4490
4491         hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4492         if (!hw) {
4493                 b43err(NULL, "Could not allocate ieee80211 device\n");
4494                 goto out;
4495         }
4496
4497         /* fill hw info */
4498         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
4499                     IEEE80211_HW_RX_INCLUDES_FCS;
4500         hw->max_signal = 100;
4501         hw->max_rssi = -110;
4502         hw->max_noise = -110;
4503         hw->queues = b43_modparam_qos ? 4 : 1;
4504         SET_IEEE80211_DEV(hw, dev->dev);
4505         if (is_valid_ether_addr(sprom->et1mac))
4506                 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4507         else
4508                 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4509
4510         /* Get and initialize struct b43_wl */
4511         wl = hw_to_b43_wl(hw);
4512         memset(wl, 0, sizeof(*wl));
4513         wl->hw = hw;
4514         spin_lock_init(&wl->irq_lock);
4515         rwlock_init(&wl->tx_lock);
4516         spin_lock_init(&wl->leds_lock);
4517         spin_lock_init(&wl->shm_lock);
4518         mutex_init(&wl->mutex);
4519         INIT_LIST_HEAD(&wl->devlist);
4520         INIT_WORK(&wl->qos_update_work, b43_qos_update_work);
4521         INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4522
4523         ssb_set_devtypedata(dev, wl);
4524         b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4525         err = 0;
4526       out:
4527         return err;
4528 }
4529
4530 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4531 {
4532         struct b43_wl *wl;
4533         int err;
4534         int first = 0;
4535
4536         wl = ssb_get_devtypedata(dev);
4537         if (!wl) {
4538                 /* Probing the first core. Must setup common struct b43_wl */
4539                 first = 1;
4540                 err = b43_wireless_init(dev);
4541                 if (err)
4542                         goto out;
4543                 wl = ssb_get_devtypedata(dev);
4544                 B43_WARN_ON(!wl);
4545         }
4546         err = b43_one_core_attach(dev, wl);
4547         if (err)
4548                 goto err_wireless_exit;
4549
4550         if (first) {
4551                 err = ieee80211_register_hw(wl->hw);
4552                 if (err)
4553                         goto err_one_core_detach;
4554         }
4555
4556       out:
4557         return err;
4558
4559       err_one_core_detach:
4560         b43_one_core_detach(dev);
4561       err_wireless_exit:
4562         if (first)
4563                 b43_wireless_exit(dev, wl);
4564         return err;
4565 }
4566
4567 static void b43_remove(struct ssb_device *dev)
4568 {
4569         struct b43_wl *wl = ssb_get_devtypedata(dev);
4570         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4571
4572         B43_WARN_ON(!wl);
4573         if (wl->current_dev == wldev)
4574                 ieee80211_unregister_hw(wl->hw);
4575
4576         b43_one_core_detach(dev);
4577
4578         if (list_empty(&wl->devlist)) {
4579                 /* Last core on the chip unregistered.
4580                  * We can destroy common struct b43_wl.
4581                  */
4582                 b43_wireless_exit(dev, wl);
4583         }
4584 }
4585
4586 /* Perform a hardware reset. This can be called from any context. */
4587 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4588 {
4589         /* Must avoid requeueing, if we are in shutdown. */
4590         if (b43_status(dev) < B43_STAT_INITIALIZED)
4591                 return;
4592         b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4593         queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4594 }
4595
4596 #ifdef CONFIG_PM
4597
4598 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4599 {
4600         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4601         struct b43_wl *wl = wldev->wl;
4602
4603         b43dbg(wl, "Suspending...\n");
4604
4605         mutex_lock(&wl->mutex);
4606         wldev->suspend_in_progress = true;
4607         wldev->suspend_init_status = b43_status(wldev);
4608         if (wldev->suspend_init_status >= B43_STAT_STARTED)
4609                 b43_wireless_core_stop(wldev);
4610         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4611                 b43_wireless_core_exit(wldev);
4612         mutex_unlock(&wl->mutex);
4613
4614         b43dbg(wl, "Device suspended.\n");
4615
4616         return 0;
4617 }
4618
4619 static int b43_resume(struct ssb_device *dev)
4620 {
4621         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4622         struct b43_wl *wl = wldev->wl;
4623         int err = 0;
4624
4625         b43dbg(wl, "Resuming...\n");
4626
4627         mutex_lock(&wl->mutex);
4628         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4629                 err = b43_wireless_core_init(wldev);
4630                 if (err) {
4631                         b43err(wl, "Resume failed at core init\n");
4632                         goto out;
4633                 }
4634         }
4635         if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4636                 err = b43_wireless_core_start(wldev);
4637                 if (err) {
4638                         b43_leds_exit(wldev);
4639                         b43_rng_exit(wldev->wl);
4640                         b43_wireless_core_exit(wldev);
4641                         b43err(wl, "Resume failed at core start\n");
4642                         goto out;
4643                 }
4644         }
4645         b43dbg(wl, "Device resumed.\n");
4646  out:
4647         wldev->suspend_in_progress = false;
4648         mutex_unlock(&wl->mutex);
4649         return err;
4650 }
4651
4652 #else /* CONFIG_PM */
4653 # define b43_suspend    NULL
4654 # define b43_resume     NULL
4655 #endif /* CONFIG_PM */
4656
4657 static struct ssb_driver b43_ssb_driver = {
4658         .name           = KBUILD_MODNAME,
4659         .id_table       = b43_ssb_tbl,
4660         .probe          = b43_probe,
4661         .remove         = b43_remove,
4662         .suspend        = b43_suspend,
4663         .resume         = b43_resume,
4664 };
4665
4666 static void b43_print_driverinfo(void)
4667 {
4668         const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4669                    *feat_leds = "", *feat_rfkill = "";
4670
4671 #ifdef CONFIG_B43_PCI_AUTOSELECT
4672         feat_pci = "P";
4673 #endif
4674 #ifdef CONFIG_B43_PCMCIA
4675         feat_pcmcia = "M";
4676 #endif
4677 #ifdef CONFIG_B43_NPHY
4678         feat_nphy = "N";
4679 #endif
4680 #ifdef CONFIG_B43_LEDS
4681         feat_leds = "L";
4682 #endif
4683 #ifdef CONFIG_B43_RFKILL
4684         feat_rfkill = "R";
4685 #endif
4686         printk(KERN_INFO "Broadcom 43xx driver loaded "
4687                "[ Features: %s%s%s%s%s, Firmware-ID: "
4688                B43_SUPPORTED_FIRMWARE_ID " ]\n",
4689                feat_pci, feat_pcmcia, feat_nphy,
4690                feat_leds, feat_rfkill);
4691 }
4692
4693 static int __init b43_init(void)
4694 {
4695         int err;
4696
4697         b43_debugfs_init();
4698         err = b43_pcmcia_init();
4699         if (err)
4700                 goto err_dfs_exit;
4701         err = ssb_driver_register(&b43_ssb_driver);
4702         if (err)
4703                 goto err_pcmcia_exit;
4704         b43_print_driverinfo();
4705
4706         return err;
4707
4708 err_pcmcia_exit:
4709         b43_pcmcia_exit();
4710 err_dfs_exit:
4711         b43_debugfs_exit();
4712         return err;
4713 }
4714
4715 static void __exit b43_exit(void)
4716 {
4717         ssb_driver_unregister(&b43_ssb_driver);
4718         b43_pcmcia_exit();
4719         b43_debugfs_exit();
4720 }
4721
4722 module_init(b43_init)
4723 module_exit(b43_exit)