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   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/firmware.h>
  37 #include <linux/wireless.h>
  38 #include <linux/workqueue.h>
  39 #include <linux/skbuff.h>
  40 #include <linux/io.h>
  41 #include <linux/dma-mapping.h>
  42 #include <asm/unaligned.h>
  43
  44 #include "b43.h"
  45 #include "main.h"
  46 #include "debugfs.h"
  47 #include "phy_common.h"
  48 #include "phy_g.h"
  49 #include "phy_n.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_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
 101         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
 102         SSB_DEVTABLE_END
 103 };
 104
 105 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
 106
 107 /* Channel and ratetables are shared for all devices.
 108  * They can't be const, because ieee80211 puts some precalculated
 109  * data in there. This data is the same for all devices, so we don't
 110  * get concurrency issues */
 111 #define RATETAB_ENT(_rateid, _flags) \
 112         {                                                               \
 113                 .bitrate        = B43_RATE_TO_BASE100KBPS(_rateid),     \
 114                 .hw_value       = (_rateid),                            \
 115                 .flags          = (_flags),                             \
 116         }
 117
 118 /*
 119  * NOTE: When changing this, sync with xmit.c's
 120  *       b43_plcp_get_bitrate_idx_* functions!
 121  */
 122 static struct ieee80211_rate __b43_ratetable[] = {
 123         RATETAB_ENT(B43_CCK_RATE_1MB, 0),
 124         RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
 125         RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
 126         RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
 127         RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
 128         RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
 129         RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
 130         RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
 131         RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
 132         RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
 133         RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
 134         RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
 135 };
 136
 137 #define b43_a_ratetable         (__b43_ratetable + 4)
 138 #define b43_a_ratetable_size    8
 139 #define b43_b_ratetable         (__b43_ratetable + 0)
 140 #define b43_b_ratetable_size    4
 141 #define b43_g_ratetable         (__b43_ratetable + 0)
 142 #define b43_g_ratetable_size    12
 143
 144 #define CHAN4G(_channel, _freq, _flags) {                       \
 145         .band                   = IEEE80211_BAND_2GHZ,          \
 146         .center_freq            = (_freq),                      \
 147         .hw_value               = (_channel),                   \
 148         .flags                  = (_flags),                     \
 149         .max_antenna_gain       = 0,                            \
 150         .max_power              = 30,                           \
 151 }
 152 static struct ieee80211_channel b43_2ghz_chantable[] = {
 153         CHAN4G(1, 2412, 0),
 154         CHAN4G(2, 2417, 0),
 155         CHAN4G(3, 2422, 0),
 156         CHAN4G(4, 2427, 0),
 157         CHAN4G(5, 2432, 0),
 158         CHAN4G(6, 2437, 0),
 159         CHAN4G(7, 2442, 0),
 160         CHAN4G(8, 2447, 0),
 161         CHAN4G(9, 2452, 0),
 162         CHAN4G(10, 2457, 0),
 163         CHAN4G(11, 2462, 0),
 164         CHAN4G(12, 2467, 0),
 165         CHAN4G(13, 2472, 0),
 166         CHAN4G(14, 2484, 0),
 167 };
 168 #undef CHAN4G
 169
 170 #define CHAN5G(_channel, _flags) {                              \
 171         .band                   = IEEE80211_BAND_5GHZ,          \
 172         .center_freq            = 5000 + (5 * (_channel)),      \
 173         .hw_value               = (_channel),                   \
 174         .flags                  = (_flags),                     \
 175         .max_antenna_gain       = 0,                            \
 176         .max_power              = 30,                           \
 177 }
 178 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
 179         CHAN5G(32, 0),          CHAN5G(34, 0),
 180         CHAN5G(36, 0),          CHAN5G(38, 0),
 181         CHAN5G(40, 0),          CHAN5G(42, 0),
 182         CHAN5G(44, 0),          CHAN5G(46, 0),
 183         CHAN5G(48, 0),          CHAN5G(50, 0),
 184         CHAN5G(52, 0),          CHAN5G(54, 0),
 185         CHAN5G(56, 0),          CHAN5G(58, 0),
 186         CHAN5G(60, 0),          CHAN5G(62, 0),
 187         CHAN5G(64, 0),          CHAN5G(66, 0),
 188         CHAN5G(68, 0),          CHAN5G(70, 0),
 189         CHAN5G(72, 0),          CHAN5G(74, 0),
 190         CHAN5G(76, 0),          CHAN5G(78, 0),
 191         CHAN5G(80, 0),          CHAN5G(82, 0),
 192         CHAN5G(84, 0),          CHAN5G(86, 0),
 193         CHAN5G(88, 0),          CHAN5G(90, 0),
 194         CHAN5G(92, 0),          CHAN5G(94, 0),
 195         CHAN5G(96, 0),          CHAN5G(98, 0),
 196         CHAN5G(100, 0),         CHAN5G(102, 0),
 197         CHAN5G(104, 0),         CHAN5G(106, 0),
 198         CHAN5G(108, 0),         CHAN5G(110, 0),
 199         CHAN5G(112, 0),         CHAN5G(114, 0),
 200         CHAN5G(116, 0),         CHAN5G(118, 0),
 201         CHAN5G(120, 0),         CHAN5G(122, 0),
 202         CHAN5G(124, 0),         CHAN5G(126, 0),
 203         CHAN5G(128, 0),         CHAN5G(130, 0),
 204         CHAN5G(132, 0),         CHAN5G(134, 0),
 205         CHAN5G(136, 0),         CHAN5G(138, 0),
 206         CHAN5G(140, 0),         CHAN5G(142, 0),
 207         CHAN5G(144, 0),         CHAN5G(145, 0),
 208         CHAN5G(146, 0),         CHAN5G(147, 0),
 209         CHAN5G(148, 0),         CHAN5G(149, 0),
 210         CHAN5G(150, 0),         CHAN5G(151, 0),
 211         CHAN5G(152, 0),         CHAN5G(153, 0),
 212         CHAN5G(154, 0),         CHAN5G(155, 0),
 213         CHAN5G(156, 0),         CHAN5G(157, 0),
 214         CHAN5G(158, 0),         CHAN5G(159, 0),
 215         CHAN5G(160, 0),         CHAN5G(161, 0),
 216         CHAN5G(162, 0),         CHAN5G(163, 0),
 217         CHAN5G(164, 0),         CHAN5G(165, 0),
 218         CHAN5G(166, 0),         CHAN5G(168, 0),
 219         CHAN5G(170, 0),         CHAN5G(172, 0),
 220         CHAN5G(174, 0),         CHAN5G(176, 0),
 221         CHAN5G(178, 0),         CHAN5G(180, 0),
 222         CHAN5G(182, 0),         CHAN5G(184, 0),
 223         CHAN5G(186, 0),         CHAN5G(188, 0),
 224         CHAN5G(190, 0),         CHAN5G(192, 0),
 225         CHAN5G(194, 0),         CHAN5G(196, 0),
 226         CHAN5G(198, 0),         CHAN5G(200, 0),
 227         CHAN5G(202, 0),         CHAN5G(204, 0),
 228         CHAN5G(206, 0),         CHAN5G(208, 0),
 229         CHAN5G(210, 0),         CHAN5G(212, 0),
 230         CHAN5G(214, 0),         CHAN5G(216, 0),
 231         CHAN5G(218, 0),         CHAN5G(220, 0),
 232         CHAN5G(222, 0),         CHAN5G(224, 0),
 233         CHAN5G(226, 0),         CHAN5G(228, 0),
 234 };
 235
 236 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
 237         CHAN5G(34, 0),          CHAN5G(36, 0),
 238         CHAN5G(38, 0),          CHAN5G(40, 0),
 239         CHAN5G(42, 0),          CHAN5G(44, 0),
 240         CHAN5G(46, 0),          CHAN5G(48, 0),
 241         CHAN5G(52, 0),          CHAN5G(56, 0),
 242         CHAN5G(60, 0),          CHAN5G(64, 0),
 243         CHAN5G(100, 0),         CHAN5G(104, 0),
 244         CHAN5G(108, 0),         CHAN5G(112, 0),
 245         CHAN5G(116, 0),         CHAN5G(120, 0),
 246         CHAN5G(124, 0),         CHAN5G(128, 0),
 247         CHAN5G(132, 0),         CHAN5G(136, 0),
 248         CHAN5G(140, 0),         CHAN5G(149, 0),
 249         CHAN5G(153, 0),         CHAN5G(157, 0),
 250         CHAN5G(161, 0),         CHAN5G(165, 0),
 251         CHAN5G(184, 0),         CHAN5G(188, 0),
 252         CHAN5G(192, 0),         CHAN5G(196, 0),
 253         CHAN5G(200, 0),         CHAN5G(204, 0),
 254         CHAN5G(208, 0),         CHAN5G(212, 0),
 255         CHAN5G(216, 0),
 256 };
 257 #undef CHAN5G
 258
 259 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
 260         .band           = IEEE80211_BAND_5GHZ,
 261         .channels       = b43_5ghz_nphy_chantable,
 262         .n_channels     = ARRAY_SIZE(b43_5ghz_nphy_chantable),
 263         .bitrates       = b43_a_ratetable,
 264         .n_bitrates     = b43_a_ratetable_size,
 265 };
 266
 267 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
 268         .band           = IEEE80211_BAND_5GHZ,
 269         .channels       = b43_5ghz_aphy_chantable,
 270         .n_channels     = ARRAY_SIZE(b43_5ghz_aphy_chantable),
 271         .bitrates       = b43_a_ratetable,
 272         .n_bitrates     = b43_a_ratetable_size,
 273 };
 274
 275 static struct ieee80211_supported_band b43_band_2GHz = {
 276         .band           = IEEE80211_BAND_2GHZ,
 277         .channels       = b43_2ghz_chantable,
 278         .n_channels     = ARRAY_SIZE(b43_2ghz_chantable),
 279         .bitrates       = b43_g_ratetable,
 280         .n_bitrates     = b43_g_ratetable_size,
 281 };
 282
 283 static void b43_wireless_core_exit(struct b43_wldev *dev);
 284 static int b43_wireless_core_init(struct b43_wldev *dev);
 285 static void b43_wireless_core_stop(struct b43_wldev *dev);
 286 static int b43_wireless_core_start(struct b43_wldev *dev);
 287
 288 static int b43_ratelimit(struct b43_wl *wl)
 289 {
 290         if (!wl || !wl->current_dev)
 291                 return 1;
 292         if (b43_status(wl->current_dev) < B43_STAT_STARTED)
 293                 return 1;
 294         /* We are up and running.
 295          * Ratelimit the messages to avoid DoS over the net. */
 296         return net_ratelimit();
 297 }
 298
 299 void b43info(struct b43_wl *wl, const char *fmt, ...)
 300 {
 301         va_list args;
 302
 303         if (!b43_ratelimit(wl))
 304                 return;
 305         va_start(args, fmt);
 306         printk(KERN_INFO "b43-%s: ",
 307                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 308         vprintk(fmt, args);
 309         va_end(args);
 310 }
 311
 312 void b43err(struct b43_wl *wl, const char *fmt, ...)
 313 {
 314         va_list args;
 315
 316         if (!b43_ratelimit(wl))
 317                 return;
 318         va_start(args, fmt);
 319         printk(KERN_ERR "b43-%s ERROR: ",
 320                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 321         vprintk(fmt, args);
 322         va_end(args);
 323 }
 324
 325 void b43warn(struct b43_wl *wl, const char *fmt, ...)
 326 {
 327         va_list args;
 328
 329         if (!b43_ratelimit(wl))
 330                 return;
 331         va_start(args, fmt);
 332         printk(KERN_WARNING "b43-%s warning: ",
 333                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 334         vprintk(fmt, args);
 335         va_end(args);
 336 }
 337
 338 #if B43_DEBUG
 339 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
 340 {
 341         va_list args;
 342
 343         va_start(args, fmt);
 344         printk(KERN_DEBUG "b43-%s debug: ",
 345                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 346         vprintk(fmt, args);
 347         va_end(args);
 348 }
 349 #endif /* DEBUG */
 350
 351 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
 352 {
 353         u32 macctl;
 354
 355         B43_WARN_ON(offset % 4 != 0);
 356
 357         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 358         if (macctl & B43_MACCTL_BE)
 359                 val = swab32(val);
 360
 361         b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
 362         mmiowb();
 363         b43_write32(dev, B43_MMIO_RAM_DATA, val);
 364 }
 365
 366 static inline void b43_shm_control_word(struct b43_wldev *dev,
 367                                         u16 routing, u16 offset)
 368 {
 369         u32 control;
 370
 371         /* "offset" is the WORD offset. */
 372         control = routing;
 373         control <<= 16;
 374         control |= offset;
 375         b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
 376 }
 377
 378 u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 379 {
 380         u32 ret;
 381
 382         if (routing == B43_SHM_SHARED) {
 383                 B43_WARN_ON(offset & 0x0001);
 384                 if (offset & 0x0003) {
 385                         /* Unaligned access */
 386                         b43_shm_control_word(dev, routing, offset >> 2);
 387                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 388                         ret <<= 16;
 389                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 390                         ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
 391
 392                         goto out;
 393                 }
 394                 offset >>= 2;
 395         }
 396         b43_shm_control_word(dev, routing, offset);
 397         ret = b43_read32(dev, B43_MMIO_SHM_DATA);
 398 out:
 399         return ret;
 400 }
 401
 402 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 403 {
 404         struct b43_wl *wl = dev->wl;
 405         unsigned long flags;
 406         u32 ret;
 407
 408         spin_lock_irqsave(&wl->shm_lock, flags);
 409         ret = __b43_shm_read32(dev, routing, offset);
 410         spin_unlock_irqrestore(&wl->shm_lock, flags);
 411
 412         return ret;
 413 }
 414
 415 u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
 416 {
 417         u16 ret;
 418
 419         if (routing == B43_SHM_SHARED) {
 420                 B43_WARN_ON(offset & 0x0001);
 421                 if (offset & 0x0003) {
 422                         /* Unaligned access */
 423                         b43_shm_control_word(dev, routing, offset >> 2);
 424                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 425
 426                         goto out;
 427                 }
 428                 offset >>= 2;
 429         }
 430         b43_shm_control_word(dev, routing, offset);
 431         ret = b43_read16(dev, B43_MMIO_SHM_DATA);
 432 out:
 433         return ret;
 434 }
 435
 436 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
 437 {
 438         struct b43_wl *wl = dev->wl;
 439         unsigned long flags;
 440         u16 ret;
 441
 442         spin_lock_irqsave(&wl->shm_lock, flags);
 443         ret = __b43_shm_read16(dev, routing, offset);
 444         spin_unlock_irqrestore(&wl->shm_lock, flags);
 445
 446         return ret;
 447 }
 448
 449 void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 450 {
 451         if (routing == B43_SHM_SHARED) {
 452                 B43_WARN_ON(offset & 0x0001);
 453                 if (offset & 0x0003) {
 454                         /* Unaligned access */
 455                         b43_shm_control_word(dev, routing, offset >> 2);
 456                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
 457                                     (value >> 16) & 0xffff);
 458                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 459                         b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
 460                         return;
 461                 }
 462                 offset >>= 2;
 463         }
 464         b43_shm_control_word(dev, routing, offset);
 465         b43_write32(dev, B43_MMIO_SHM_DATA, value);
 466 }
 467
 468 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 469 {
 470         struct b43_wl *wl = dev->wl;
 471         unsigned long flags;
 472
 473         spin_lock_irqsave(&wl->shm_lock, flags);
 474         __b43_shm_write32(dev, routing, offset, value);
 475         spin_unlock_irqrestore(&wl->shm_lock, flags);
 476 }
 477
 478 void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 479 {
 480         if (routing == B43_SHM_SHARED) {
 481                 B43_WARN_ON(offset & 0x0001);
 482                 if (offset & 0x0003) {
 483                         /* Unaligned access */
 484                         b43_shm_control_word(dev, routing, offset >> 2);
 485                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
 486                         return;
 487                 }
 488                 offset >>= 2;
 489         }
 490         b43_shm_control_word(dev, routing, offset);
 491         b43_write16(dev, B43_MMIO_SHM_DATA, value);
 492 }
 493
 494 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 495 {
 496         struct b43_wl *wl = dev->wl;
 497         unsigned long flags;
 498
 499         spin_lock_irqsave(&wl->shm_lock, flags);
 500         __b43_shm_write16(dev, routing, offset, value);
 501         spin_unlock_irqrestore(&wl->shm_lock, flags);
 502 }
 503
 504 /* Read HostFlags */
 505 u64 b43_hf_read(struct b43_wldev * dev)
 506 {
 507         u64 ret;
 508
 509         ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
 510         ret <<= 16;
 511         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI);
 512         ret <<= 16;
 513         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
 514
 515         return ret;
 516 }
 517
 518 /* Write HostFlags */
 519 void b43_hf_write(struct b43_wldev *dev, u64 value)
 520 {
 521         u16 lo, mi, hi;
 522
 523         lo = (value & 0x00000000FFFFULL);
 524         mi = (value & 0x0000FFFF0000ULL) >> 16;
 525         hi = (value & 0xFFFF00000000ULL) >> 32;
 526         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO, lo);
 527         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFMI, mi);
 528         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI, hi);
 529 }
 530
 531 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
 532 {
 533         u32 low, high;
 534
 535         B43_WARN_ON(dev->dev->id.revision < 3);
 536
 537         /* The hardware guarantees us an atomic read, if we
 538          * read the low register first. */
 539         low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
 540         high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 541
 542         *tsf = high;
 543         *tsf <<= 32;
 544         *tsf |= low;
 545 }
 546
 547 static void b43_time_lock(struct b43_wldev *dev)
 548 {
 549         u32 macctl;
 550
 551         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 552         macctl |= B43_MACCTL_TBTTHOLD;
 553         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 554         /* Commit the write */
 555         b43_read32(dev, B43_MMIO_MACCTL);
 556 }
 557
 558 static void b43_time_unlock(struct b43_wldev *dev)
 559 {
 560         u32 macctl;
 561
 562         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 563         macctl &= ~B43_MACCTL_TBTTHOLD;
 564         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 565         /* Commit the write */
 566         b43_read32(dev, B43_MMIO_MACCTL);
 567 }
 568
 569 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
 570 {
 571         u32 low, high;
 572
 573         B43_WARN_ON(dev->dev->id.revision < 3);
 574
 575         low = tsf;
 576         high = (tsf >> 32);
 577         /* The hardware guarantees us an atomic write, if we
 578          * write the low register first. */
 579         b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
 580         mmiowb();
 581         b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
 582         mmiowb();
 583 }
 584
 585 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
 586 {
 587         b43_time_lock(dev);
 588         b43_tsf_write_locked(dev, tsf);
 589         b43_time_unlock(dev);
 590 }
 591
 592 static
 593 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
 594 {
 595         static const u8 zero_addr[ETH_ALEN] = { 0 };
 596         u16 data;
 597
 598         if (!mac)
 599                 mac = zero_addr;
 600
 601         offset |= 0x0020;
 602         b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
 603
 604         data = mac[0];
 605         data |= mac[1] << 8;
 606         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 607         data = mac[2];
 608         data |= mac[3] << 8;
 609         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 610         data = mac[4];
 611         data |= mac[5] << 8;
 612         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 613 }
 614
 615 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
 616 {
 617         const u8 *mac;
 618         const u8 *bssid;
 619         u8 mac_bssid[ETH_ALEN * 2];
 620         int i;
 621         u32 tmp;
 622
 623         bssid = dev->wl->bssid;
 624         mac = dev->wl->mac_addr;
 625
 626         b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
 627
 628         memcpy(mac_bssid, mac, ETH_ALEN);
 629         memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
 630
 631         /* Write our MAC address and BSSID to template ram */
 632         for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
 633                 tmp = (u32) (mac_bssid[i + 0]);
 634                 tmp |= (u32) (mac_bssid[i + 1]) << 8;
 635                 tmp |= (u32) (mac_bssid[i + 2]) << 16;
 636                 tmp |= (u32) (mac_bssid[i + 3]) << 24;
 637                 b43_ram_write(dev, 0x20 + i, tmp);
 638         }
 639 }
 640
 641 static void b43_upload_card_macaddress(struct b43_wldev *dev)
 642 {
 643         b43_write_mac_bssid_templates(dev);
 644         b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
 645 }
 646
 647 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
 648 {
 649         /* slot_time is in usec. */
 650         if (dev->phy.type != B43_PHYTYPE_G)
 651                 return;
 652         b43_write16(dev, 0x684, 510 + slot_time);
 653         b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
 654 }
 655
 656 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
 657 {
 658         b43_set_slot_time(dev, 9);
 659 }
 660
 661 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
 662 {
 663         b43_set_slot_time(dev, 20);
 664 }
 665
 666 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
 667  * Returns the _previously_ enabled IRQ mask.
 668  */
 669 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
 670 {
 671         u32 old_mask;
 672
 673         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 674         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
 675
 676         return old_mask;
 677 }
 678
 679 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
 680  * Returns the _previously_ enabled IRQ mask.
 681  */
 682 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
 683 {
 684         u32 old_mask;
 685
 686         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 687         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
 688
 689         return old_mask;
 690 }
 691
 692 /* Synchronize IRQ top- and bottom-half.
 693  * IRQs must be masked before calling this.
 694  * This must not be called with the irq_lock held.
 695  */
 696 static void b43_synchronize_irq(struct b43_wldev *dev)
 697 {
 698         synchronize_irq(dev->dev->irq);
 699         tasklet_kill(&dev->isr_tasklet);
 700 }
 701
 702 /* DummyTransmission function, as documented on
 703  * http://bcm-specs.sipsolutions.net/DummyTransmission
 704  */
 705 void b43_dummy_transmission(struct b43_wldev *dev)
 706 {
 707         struct b43_wl *wl = dev->wl;
 708         struct b43_phy *phy = &dev->phy;
 709         unsigned int i, max_loop;
 710         u16 value;
 711         u32 buffer[5] = {
 712                 0x00000000,
 713                 0x00D40000,
 714                 0x00000000,
 715                 0x01000000,
 716                 0x00000000,
 717         };
 718
 719         switch (phy->type) {
 720         case B43_PHYTYPE_A:
 721                 max_loop = 0x1E;
 722                 buffer[0] = 0x000201CC;
 723                 break;
 724         case B43_PHYTYPE_B:
 725         case B43_PHYTYPE_G:
 726                 max_loop = 0xFA;
 727                 buffer[0] = 0x000B846E;
 728                 break;
 729         default:
 730                 B43_WARN_ON(1);
 731                 return;
 732         }
 733
 734         spin_lock_irq(&wl->irq_lock);
 735         write_lock(&wl->tx_lock);
 736
 737         for (i = 0; i < 5; i++)
 738                 b43_ram_write(dev, i * 4, buffer[i]);
 739
 740         /* Commit writes */
 741         b43_read32(dev, B43_MMIO_MACCTL);
 742
 743         b43_write16(dev, 0x0568, 0x0000);
 744         b43_write16(dev, 0x07C0, 0x0000);
 745         value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
 746         b43_write16(dev, 0x050C, value);
 747         b43_write16(dev, 0x0508, 0x0000);
 748         b43_write16(dev, 0x050A, 0x0000);
 749         b43_write16(dev, 0x054C, 0x0000);
 750         b43_write16(dev, 0x056A, 0x0014);
 751         b43_write16(dev, 0x0568, 0x0826);
 752         b43_write16(dev, 0x0500, 0x0000);
 753         b43_write16(dev, 0x0502, 0x0030);
 754
 755         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 756                 b43_radio_write16(dev, 0x0051, 0x0017);
 757         for (i = 0x00; i < max_loop; i++) {
 758                 value = b43_read16(dev, 0x050E);
 759                 if (value & 0x0080)
 760                         break;
 761                 udelay(10);
 762         }
 763         for (i = 0x00; i < 0x0A; i++) {
 764                 value = b43_read16(dev, 0x050E);
 765                 if (value & 0x0400)
 766                         break;
 767                 udelay(10);
 768         }
 769         for (i = 0x00; i < 0x19; i++) {
 770                 value = b43_read16(dev, 0x0690);
 771                 if (!(value & 0x0100))
 772                         break;
 773                 udelay(10);
 774         }
 775         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 776                 b43_radio_write16(dev, 0x0051, 0x0037);
 777
 778         write_unlock(&wl->tx_lock);
 779         spin_unlock_irq(&wl->irq_lock);
 780 }
 781
 782 static void key_write(struct b43_wldev *dev,
 783                       u8 index, u8 algorithm, const u8 * key)
 784 {
 785         unsigned int i;
 786         u32 offset;
 787         u16 value;
 788         u16 kidx;
 789
 790         /* Key index/algo block */
 791         kidx = b43_kidx_to_fw(dev, index);
 792         value = ((kidx << 4) | algorithm);
 793         b43_shm_write16(dev, B43_SHM_SHARED,
 794                         B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
 795
 796         /* Write the key to the Key Table Pointer offset */
 797         offset = dev->ktp + (index * B43_SEC_KEYSIZE);
 798         for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
 799                 value = key[i];
 800                 value |= (u16) (key[i + 1]) << 8;
 801                 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
 802         }
 803 }
 804
 805 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
 806 {
 807         u32 addrtmp[2] = { 0, 0, };
 808         u8 per_sta_keys_start = 8;
 809
 810         if (b43_new_kidx_api(dev))
 811                 per_sta_keys_start = 4;
 812
 813         B43_WARN_ON(index < per_sta_keys_start);
 814         /* We have two default TX keys and possibly two default RX keys.
 815          * Physical mac 0 is mapped to physical key 4 or 8, depending
 816          * on the firmware version.
 817          * So we must adjust the index here.
 818          */
 819         index -= per_sta_keys_start;
 820
 821         if (addr) {
 822                 addrtmp[0] = addr[0];
 823                 addrtmp[0] |= ((u32) (addr[1]) << 8);
 824                 addrtmp[0] |= ((u32) (addr[2]) << 16);
 825                 addrtmp[0] |= ((u32) (addr[3]) << 24);
 826                 addrtmp[1] = addr[4];
 827                 addrtmp[1] |= ((u32) (addr[5]) << 8);
 828         }
 829
 830         if (dev->dev->id.revision >= 5) {
 831                 /* Receive match transmitter address mechanism */
 832                 b43_shm_write32(dev, B43_SHM_RCMTA,
 833                                 (index * 2) + 0, addrtmp[0]);
 834                 b43_shm_write16(dev, B43_SHM_RCMTA,
 835                                 (index * 2) + 1, addrtmp[1]);
 836         } else {
 837                 /* RXE (Receive Engine) and
 838                  * PSM (Programmable State Machine) mechanism
 839                  */
 840                 if (index < 8) {
 841                         /* TODO write to RCM 16, 19, 22 and 25 */
 842                 } else {
 843                         b43_shm_write32(dev, B43_SHM_SHARED,
 844                                         B43_SHM_SH_PSM + (index * 6) + 0,
 845                                         addrtmp[0]);
 846                         b43_shm_write16(dev, B43_SHM_SHARED,
 847                                         B43_SHM_SH_PSM + (index * 6) + 4,
 848                                         addrtmp[1]);
 849                 }
 850         }
 851 }
 852
 853 static void do_key_write(struct b43_wldev *dev,
 854                          u8 index, u8 algorithm,
 855                          const u8 * key, size_t key_len, const u8 * mac_addr)
 856 {
 857         u8 buf[B43_SEC_KEYSIZE] = { 0, };
 858         u8 per_sta_keys_start = 8;
 859
 860         if (b43_new_kidx_api(dev))
 861                 per_sta_keys_start = 4;
 862
 863         B43_WARN_ON(index >= dev->max_nr_keys);
 864         B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
 865
 866         if (index >= per_sta_keys_start)
 867                 keymac_write(dev, index, NULL); /* First zero out mac. */
 868         if (key)
 869                 memcpy(buf, key, key_len);
 870         key_write(dev, index, algorithm, buf);
 871         if (index >= per_sta_keys_start)
 872                 keymac_write(dev, index, mac_addr);
 873
 874         dev->key[index].algorithm = algorithm;
 875 }
 876
 877 static int b43_key_write(struct b43_wldev *dev,
 878                          int index, u8 algorithm,
 879                          const u8 * key, size_t key_len,
 880                          const u8 * mac_addr,
 881                          struct ieee80211_key_conf *keyconf)
 882 {
 883         int i;
 884         int sta_keys_start;
 885
 886         if (key_len > B43_SEC_KEYSIZE)
 887                 return -EINVAL;
 888         for (i = 0; i < dev->max_nr_keys; i++) {
 889                 /* Check that we don't already have this key. */
 890                 B43_WARN_ON(dev->key[i].keyconf == keyconf);
 891         }
 892         if (index < 0) {
 893                 /* Pairwise key. Get an empty slot for the key. */
 894                 if (b43_new_kidx_api(dev))
 895                         sta_keys_start = 4;
 896                 else
 897                         sta_keys_start = 8;
 898                 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
 899                         if (!dev->key[i].keyconf) {
 900                                 /* found empty */
 901                                 index = i;
 902                                 break;
 903                         }
 904                 }
 905                 if (index < 0) {
 906                         b43warn(dev->wl, "Out of hardware key memory\n");
 907                         return -ENOSPC;
 908                 }
 909         } else
 910                 B43_WARN_ON(index > 3);
 911
 912         do_key_write(dev, index, algorithm, key, key_len, mac_addr);
 913         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 914                 /* Default RX key */
 915                 B43_WARN_ON(mac_addr);
 916                 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
 917         }
 918         keyconf->hw_key_idx = index;
 919         dev->key[index].keyconf = keyconf;
 920
 921         return 0;
 922 }
 923
 924 static int b43_key_clear(struct b43_wldev *dev, int index)
 925 {
 926         if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
 927                 return -EINVAL;
 928         do_key_write(dev, index, B43_SEC_ALGO_NONE,
 929                      NULL, B43_SEC_KEYSIZE, NULL);
 930         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 931                 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
 932                              NULL, B43_SEC_KEYSIZE, NULL);
 933         }
 934         dev->key[index].keyconf = NULL;
 935
 936         return 0;
 937 }
 938
 939 static void b43_clear_keys(struct b43_wldev *dev)
 940 {
 941         int i;
 942
 943         for (i = 0; i < dev->max_nr_keys; i++)
 944                 b43_key_clear(dev, i);
 945 }
 946
 947 static void b43_dump_keymemory(struct b43_wldev *dev)
 948 {
 949         unsigned int i, index, offset;
 950         DECLARE_MAC_BUF(macbuf);
 951         u8 mac[ETH_ALEN];
 952         u16 algo;
 953         u32 rcmta0;
 954         u16 rcmta1;
 955         u64 hf;
 956         struct b43_key *key;
 957
 958         if (!b43_debug(dev, B43_DBG_KEYS))
 959                 return;
 960
 961         hf = b43_hf_read(dev);
 962         b43dbg(dev->wl, "Hardware key memory dump:  USEDEFKEYS=%u\n",
 963                !!(hf & B43_HF_USEDEFKEYS));
 964         for (index = 0; index < dev->max_nr_keys; index++) {
 965                 key = &(dev->key[index]);
 966                 printk(KERN_DEBUG "Key slot %02u: %s",
 967                        index, (key->keyconf == NULL) ? " " : "*");
 968                 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
 969                 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
 970                         u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
 971                         printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
 972                 }
 973
 974                 algo = b43_shm_read16(dev, B43_SHM_SHARED,
 975                                       B43_SHM_SH_KEYIDXBLOCK + (index * 2));
 976                 printk("   Algo: %04X/%02X", algo, key->algorithm);
 977
 978                 if (index >= 4) {
 979                         rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
 980                                                 ((index - 4) * 2) + 0);
 981                         rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
 982                                                 ((index - 4) * 2) + 1);
 983                         *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
 984                         *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
 985                         printk("   MAC: %s",
 986                                print_mac(macbuf, mac));
 987                 } else
 988                         printk("   DEFAULT KEY");
 989                 printk("\n");
 990         }
 991 }
 992
 993 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
 994 {
 995         u32 macctl;
 996         u16 ucstat;
 997         bool hwps;
 998         bool awake;
 999         int i;
1000
1001         B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1002                     (ps_flags & B43_PS_DISABLED));
1003         B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1004
1005         if (ps_flags & B43_PS_ENABLED) {
1006                 hwps = 1;
1007         } else if (ps_flags & B43_PS_DISABLED) {
1008                 hwps = 0;
1009         } else {
1010                 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1011                 //      and thus is not an AP and we are associated, set bit 25
1012         }
1013         if (ps_flags & B43_PS_AWAKE) {
1014                 awake = 1;
1015         } else if (ps_flags & B43_PS_ASLEEP) {
1016                 awake = 0;
1017         } else {
1018                 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1019                 //      or we are associated, or FIXME, or the latest PS-Poll packet sent was
1020                 //      successful, set bit26
1021         }
1022
1023 /* FIXME: For now we force awake-on and hwps-off */
1024         hwps = 0;
1025         awake = 1;
1026
1027         macctl = b43_read32(dev, B43_MMIO_MACCTL);
1028         if (hwps)
1029                 macctl |= B43_MACCTL_HWPS;
1030         else
1031                 macctl &= ~B43_MACCTL_HWPS;
1032         if (awake)
1033                 macctl |= B43_MACCTL_AWAKE;
1034         else
1035                 macctl &= ~B43_MACCTL_AWAKE;
1036         b43_write32(dev, B43_MMIO_MACCTL, macctl);
1037         /* Commit write */
1038         b43_read32(dev, B43_MMIO_MACCTL);
1039         if (awake && dev->dev->id.revision >= 5) {
1040                 /* Wait for the microcode to wake up. */
1041                 for (i = 0; i < 100; i++) {
1042                         ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1043                                                 B43_SHM_SH_UCODESTAT);
1044                         if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1045                                 break;
1046                         udelay(10);
1047                 }
1048         }
1049 }
1050
1051 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
1052 {
1053         u32 tmslow;
1054         u32 macctl;
1055
1056         flags |= B43_TMSLOW_PHYCLKEN;
1057         flags |= B43_TMSLOW_PHYRESET;
1058         ssb_device_enable(dev->dev, flags);
1059         msleep(2);              /* Wait for the PLL to turn on. */
1060
1061         /* Now take the PHY out of Reset again */
1062         tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
1063         tmslow |= SSB_TMSLOW_FGC;
1064         tmslow &= ~B43_TMSLOW_PHYRESET;
1065         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1066         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
1067         msleep(1);
1068         tmslow &= ~SSB_TMSLOW_FGC;
1069         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
1070         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
1071         msleep(1);
1072
1073         /* Turn Analog ON, but only if we already know the PHY-type.
1074          * This protects against very early setup where we don't know the
1075          * PHY-type, yet. wireless_core_reset will be called once again later,
1076          * when we know the PHY-type. */
1077         if (dev->phy.ops)
1078                 dev->phy.ops->switch_analog(dev, 1);
1079
1080         macctl = b43_read32(dev, B43_MMIO_MACCTL);
1081         macctl &= ~B43_MACCTL_GMODE;
1082         if (flags & B43_TMSLOW_GMODE)
1083                 macctl |= B43_MACCTL_GMODE;
1084         macctl |= B43_MACCTL_IHR_ENABLED;
1085         b43_write32(dev, B43_MMIO_MACCTL, macctl);
1086 }
1087
1088 static void handle_irq_transmit_status(struct b43_wldev *dev)
1089 {
1090         u32 v0, v1;
1091         u16 tmp;
1092         struct b43_txstatus stat;
1093
1094         while (1) {
1095                 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1096                 if (!(v0 & 0x00000001))
1097                         break;
1098                 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1099
1100                 stat.cookie = (v0 >> 16);
1101                 stat.seq = (v1 & 0x0000FFFF);
1102                 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1103                 tmp = (v0 & 0x0000FFFF);
1104                 stat.frame_count = ((tmp & 0xF000) >> 12);
1105                 stat.rts_count = ((tmp & 0x0F00) >> 8);
1106                 stat.supp_reason = ((tmp & 0x001C) >> 2);
1107                 stat.pm_indicated = !!(tmp & 0x0080);
1108                 stat.intermediate = !!(tmp & 0x0040);
1109                 stat.for_ampdu = !!(tmp & 0x0020);
1110                 stat.acked = !!(tmp & 0x0002);
1111
1112                 b43_handle_txstatus(dev, &stat);
1113         }
1114 }
1115
1116 static void drain_txstatus_queue(struct b43_wldev *dev)
1117 {
1118         u32 dummy;
1119
1120         if (dev->dev->id.revision < 5)
1121                 return;
1122         /* Read all entries from the microcode TXstatus FIFO
1123          * and throw them away.
1124          */
1125         while (1) {
1126                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1127                 if (!(dummy & 0x00000001))
1128                         break;
1129                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1130         }
1131 }
1132
1133 static u32 b43_jssi_read(struct b43_wldev *dev)
1134 {
1135         u32 val = 0;
1136
1137         val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1138         val <<= 16;
1139         val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1140
1141         return val;
1142 }
1143
1144 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1145 {
1146         b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1147         b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1148 }
1149
1150 static void b43_generate_noise_sample(struct b43_wldev *dev)
1151 {
1152         b43_jssi_write(dev, 0x7F7F7F7F);
1153         b43_write32(dev, B43_MMIO_MACCMD,
1154                     b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1155 }
1156
1157 static void b43_calculate_link_quality(struct b43_wldev *dev)
1158 {
1159         /* Top half of Link Quality calculation. */
1160
1161         if (dev->phy.type != B43_PHYTYPE_G)
1162                 return;
1163         if (dev->noisecalc.calculation_running)
1164                 return;
1165         dev->noisecalc.calculation_running = 1;
1166         dev->noisecalc.nr_samples = 0;
1167
1168         b43_generate_noise_sample(dev);
1169 }
1170
1171 static void handle_irq_noise(struct b43_wldev *dev)
1172 {
1173         struct b43_phy_g *phy = dev->phy.g;
1174         u16 tmp;
1175         u8 noise[4];
1176         u8 i, j;
1177         s32 average;
1178
1179         /* Bottom half of Link Quality calculation. */
1180
1181         if (dev->phy.type != B43_PHYTYPE_G)
1182                 return;
1183
1184         /* Possible race condition: It might be possible that the user
1185          * changed to a different channel in the meantime since we
1186          * started the calculation. We ignore that fact, since it's
1187          * not really that much of a problem. The background noise is
1188          * an estimation only anyway. Slightly wrong results will get damped
1189          * by the averaging of the 8 sample rounds. Additionally the
1190          * value is shortlived. So it will be replaced by the next noise
1191          * calculation round soon. */
1192
1193         B43_WARN_ON(!dev->noisecalc.calculation_running);
1194         *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1195         if (noise[0] == 0x7F || noise[1] == 0x7F ||
1196             noise[2] == 0x7F || noise[3] == 0x7F)
1197                 goto generate_new;
1198
1199         /* Get the noise samples. */
1200         B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1201         i = dev->noisecalc.nr_samples;
1202         noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1203         noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1204         noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1205         noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1206         dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1207         dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1208         dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1209         dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1210         dev->noisecalc.nr_samples++;
1211         if (dev->noisecalc.nr_samples == 8) {
1212                 /* Calculate the Link Quality by the noise samples. */
1213                 average = 0;
1214                 for (i = 0; i < 8; i++) {
1215                         for (j = 0; j < 4; j++)
1216                                 average += dev->noisecalc.samples[i][j];
1217                 }
1218                 average /= (8 * 4);
1219                 average *= 125;
1220                 average += 64;
1221                 average /= 128;
1222                 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1223                 tmp = (tmp / 128) & 0x1F;
1224                 if (tmp >= 8)
1225                         average += 2;
1226                 else
1227                         average -= 25;
1228                 if (tmp == 8)
1229                         average -= 72;
1230                 else
1231                         average -= 48;
1232
1233                 dev->stats.link_noise = average;
1234                 dev->noisecalc.calculation_running = 0;
1235                 return;
1236         }
1237 generate_new:
1238         b43_generate_noise_sample(dev);
1239 }
1240
1241 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1242 {
1243         if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1244                 ///TODO: PS TBTT
1245         } else {
1246                 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1247                         b43_power_saving_ctl_bits(dev, 0);
1248         }
1249         if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1250                 dev->dfq_valid = 1;
1251 }
1252
1253 static void handle_irq_atim_end(struct b43_wldev *dev)
1254 {
1255         if (dev->dfq_valid) {
1256                 b43_write32(dev, B43_MMIO_MACCMD,
1257                             b43_read32(dev, B43_MMIO_MACCMD)
1258                             | B43_MACCMD_DFQ_VALID);
1259                 dev->dfq_valid = 0;
1260         }
1261 }
1262
1263 static void handle_irq_pmq(struct b43_wldev *dev)
1264 {
1265         u32 tmp;
1266
1267         //TODO: AP mode.
1268
1269         while (1) {
1270                 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1271                 if (!(tmp & 0x00000008))
1272                         break;
1273         }
1274         /* 16bit write is odd, but correct. */
1275         b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1276 }
1277
1278 static void b43_write_template_common(struct b43_wldev *dev,
1279                                       const u8 * data, u16 size,
1280                                       u16 ram_offset,
1281                                       u16 shm_size_offset, u8 rate)
1282 {
1283         u32 i, tmp;
1284         struct b43_plcp_hdr4 plcp;
1285
1286         plcp.data = 0;
1287         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1288         b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1289         ram_offset += sizeof(u32);
1290         /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1291          * So leave the first two bytes of the next write blank.
1292          */
1293         tmp = (u32) (data[0]) << 16;
1294         tmp |= (u32) (data[1]) << 24;
1295         b43_ram_write(dev, ram_offset, tmp);
1296         ram_offset += sizeof(u32);
1297         for (i = 2; i < size; i += sizeof(u32)) {
1298                 tmp = (u32) (data[i + 0]);
1299                 if (i + 1 < size)
1300                         tmp |= (u32) (data[i + 1]) << 8;
1301                 if (i + 2 < size)
1302                         tmp |= (u32) (data[i + 2]) << 16;
1303                 if (i + 3 < size)
1304                         tmp |= (u32) (data[i + 3]) << 24;
1305                 b43_ram_write(dev, ram_offset + i - 2, tmp);
1306         }
1307         b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1308                         size + sizeof(struct b43_plcp_hdr6));
1309 }
1310
1311 /* Check if the use of the antenna that ieee80211 told us to
1312  * use is possible. This will fall back to DEFAULT.
1313  * "antenna_nr" is the antenna identifier we got from ieee80211. */
1314 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1315                                   u8 antenna_nr)
1316 {
1317         u8 antenna_mask;
1318
1319         if (antenna_nr == 0) {
1320                 /* Zero means "use default antenna". That's always OK. */
1321                 return 0;
1322         }
1323
1324         /* Get the mask of available antennas. */
1325         if (dev->phy.gmode)
1326                 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
1327         else
1328                 antenna_mask = dev->dev->bus->sprom.ant_available_a;
1329
1330         if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1331                 /* This antenna is not available. Fall back to default. */
1332                 return 0;
1333         }
1334
1335         return antenna_nr;
1336 }
1337
1338 /* Convert a b43 antenna number value to the PHY TX control value. */
1339 static u16 b43_antenna_to_phyctl(int antenna)
1340 {
1341         switch (antenna) {
1342         case B43_ANTENNA0:
1343                 return B43_TXH_PHY_ANT0;
1344         case B43_ANTENNA1:
1345                 return B43_TXH_PHY_ANT1;
1346         case B43_ANTENNA2:
1347                 return B43_TXH_PHY_ANT2;
1348         case B43_ANTENNA3:
1349                 return B43_TXH_PHY_ANT3;
1350         case B43_ANTENNA_AUTO:
1351                 return B43_TXH_PHY_ANT01AUTO;
1352         }
1353         B43_WARN_ON(1);
1354         return 0;
1355 }
1356
1357 static void b43_write_beacon_template(struct b43_wldev *dev,
1358                                       u16 ram_offset,
1359                                       u16 shm_size_offset)
1360 {
1361         unsigned int i, len, variable_len;
1362         const struct ieee80211_mgmt *bcn;
1363         const u8 *ie;
1364         bool tim_found = 0;
1365         unsigned int rate;
1366         u16 ctl;
1367         int antenna;
1368         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1369
1370         bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1371         len = min((size_t) dev->wl->current_beacon->len,
1372                   0x200 - sizeof(struct b43_plcp_hdr6));
1373         rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1374
1375         b43_write_template_common(dev, (const u8 *)bcn,
1376                                   len, ram_offset, shm_size_offset, rate);
1377
1378         /* Write the PHY TX control parameters. */
1379         antenna = B43_ANTENNA_DEFAULT;
1380         antenna = b43_antenna_to_phyctl(antenna);
1381         ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1382         /* We can't send beacons with short preamble. Would get PHY errors. */
1383         ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1384         ctl &= ~B43_TXH_PHY_ANT;
1385         ctl &= ~B43_TXH_PHY_ENC;
1386         ctl |= antenna;
1387         if (b43_is_cck_rate(rate))
1388                 ctl |= B43_TXH_PHY_ENC_CCK;
1389         else
1390                 ctl |= B43_TXH_PHY_ENC_OFDM;
1391         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1392
1393         /* Find the position of the TIM and the DTIM_period value
1394          * and write them to SHM. */
1395         ie = bcn->u.beacon.variable;
1396         variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1397         for (i = 0; i < variable_len - 2; ) {
1398                 uint8_t ie_id, ie_len;
1399
1400                 ie_id = ie[i];
1401                 ie_len = ie[i + 1];
1402                 if (ie_id == 5) {
1403                         u16 tim_position;
1404                         u16 dtim_period;
1405                         /* This is the TIM Information Element */
1406
1407                         /* Check whether the ie_len is in the beacon data range. */
1408                         if (variable_len < ie_len + 2 + i)
1409                                 break;
1410                         /* A valid TIM is at least 4 bytes long. */
1411                         if (ie_len < 4)
1412                                 break;
1413                         tim_found = 1;
1414
1415                         tim_position = sizeof(struct b43_plcp_hdr6);
1416                         tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1417                         tim_position += i;
1418
1419                         dtim_period = ie[i + 3];
1420
1421                         b43_shm_write16(dev, B43_SHM_SHARED,
1422                                         B43_SHM_SH_TIMBPOS, tim_position);
1423                         b43_shm_write16(dev, B43_SHM_SHARED,
1424                                         B43_SHM_SH_DTIMPER, dtim_period);
1425                         break;
1426                 }
1427                 i += ie_len + 2;
1428         }
1429         if (!tim_found) {
1430                 /*
1431                  * If ucode wants to modify TIM do it behind the beacon, this
1432                  * will happen, for example, when doing mesh networking.
1433                  */
1434                 b43_shm_write16(dev, B43_SHM_SHARED,
1435                                 B43_SHM_SH_TIMBPOS,
1436                                 len + sizeof(struct b43_plcp_hdr6));
1437                 b43_shm_write16(dev, B43_SHM_SHARED,
1438                                 B43_SHM_SH_DTIMPER, 0);
1439         }
1440         b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1441 }
1442
1443 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1444                                       u16 shm_offset, u16 size,
1445                                       struct ieee80211_rate *rate)
1446 {
1447         struct b43_plcp_hdr4 plcp;
1448         u32 tmp;
1449         __le16 dur;
1450
1451         plcp.data = 0;
1452         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value);
1453         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1454                                                dev->wl->vif, size,
1455                                                rate);
1456         /* Write PLCP in two parts and timing for packet transfer */
1457         tmp = le32_to_cpu(plcp.data);
1458         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1459         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1460         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1461 }
1462
1463 /* Instead of using custom probe response template, this function
1464  * just patches custom beacon template by:
1465  * 1) Changing packet type
1466  * 2) Patching duration field
1467  * 3) Stripping TIM
1468  */
1469 static const u8 * b43_generate_probe_resp(struct b43_wldev *dev,
1470                                           u16 *dest_size,
1471                                           struct ieee80211_rate *rate)
1472 {
1473         const u8 *src_data;
1474         u8 *dest_data;
1475         u16 src_size, elem_size, src_pos, dest_pos;
1476         __le16 dur;
1477         struct ieee80211_hdr *hdr;
1478         size_t ie_start;
1479
1480         src_size = dev->wl->current_beacon->len;
1481         src_data = (const u8 *)dev->wl->current_beacon->data;
1482
1483         /* Get the start offset of the variable IEs in the packet. */
1484         ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1485         B43_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, u.beacon.variable));
1486
1487         if (B43_WARN_ON(src_size < ie_start))
1488                 return NULL;
1489
1490         dest_data = kmalloc(src_size, GFP_ATOMIC);
1491         if (unlikely(!dest_data))
1492                 return NULL;
1493
1494         /* Copy the static data and all Information Elements, except the TIM. */
1495         memcpy(dest_data, src_data, ie_start);
1496         src_pos = ie_start;
1497         dest_pos = ie_start;
1498         for ( ; src_pos < src_size - 2; src_pos += elem_size) {
1499                 elem_size = src_data[src_pos + 1] + 2;
1500                 if (src_data[src_pos] == 5) {
1501                         /* This is the TIM. */
1502                         continue;
1503                 }
1504                 memcpy(dest_data + dest_pos, src_data + src_pos,
1505                        elem_size);
1506                 dest_pos += elem_size;
1507         }
1508         *dest_size = dest_pos;
1509         hdr = (struct ieee80211_hdr *)dest_data;
1510
1511         /* Set the frame control. */
1512         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1513                                          IEEE80211_STYPE_PROBE_RESP);
1514         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1515                                                dev->wl->vif, *dest_size,
1516                                                rate);
1517         hdr->duration_id = dur;
1518
1519         return dest_data;
1520 }
1521
1522 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1523                                           u16 ram_offset,
1524                                           u16 shm_size_offset,
1525                                           struct ieee80211_rate *rate)
1526 {
1527         const u8 *probe_resp_data;
1528         u16 size;
1529
1530         size = dev->wl->current_beacon->len;
1531         probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1532         if (unlikely(!probe_resp_data))
1533                 return;
1534
1535         /* Looks like PLCP headers plus packet timings are stored for
1536          * all possible basic rates
1537          */
1538         b43_write_probe_resp_plcp(dev, 0x31A, size, &b43_b_ratetable[0]);
1539         b43_write_probe_resp_plcp(dev, 0x32C, size, &b43_b_ratetable[1]);
1540         b43_write_probe_resp_plcp(dev, 0x33E, size, &b43_b_ratetable[2]);
1541         b43_write_probe_resp_plcp(dev, 0x350, size, &b43_b_ratetable[3]);
1542
1543         size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1544         b43_write_template_common(dev, probe_resp_data,
1545                                   size, ram_offset, shm_size_offset,
1546                                   rate->hw_value);
1547         kfree(probe_resp_data);
1548 }
1549
1550 static void b43_upload_beacon0(struct b43_wldev *dev)
1551 {
1552         struct b43_wl *wl = dev->wl;
1553
1554         if (wl->beacon0_uploaded)
1555                 return;
1556         b43_write_beacon_template(dev, 0x68, 0x18);
1557         /* FIXME: Probe resp upload doesn't really belong here,
1558          *        but we don't use that feature anyway. */
1559         b43_write_probe_resp_template(dev, 0x268, 0x4A,
1560                                       &__b43_ratetable[3]);
1561         wl->beacon0_uploaded = 1;
1562 }
1563
1564 static void b43_upload_beacon1(struct b43_wldev *dev)
1565 {
1566         struct b43_wl *wl = dev->wl;
1567
1568         if (wl->beacon1_uploaded)
1569                 return;
1570         b43_write_beacon_template(dev, 0x468, 0x1A);
1571         wl->beacon1_uploaded = 1;
1572 }
1573
1574 static void handle_irq_beacon(struct b43_wldev *dev)
1575 {
1576         struct b43_wl *wl = dev->wl;
1577         u32 cmd, beacon0_valid, beacon1_valid;
1578
1579         if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1580             !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
1581                 return;
1582
1583         /* This is the bottom half of the asynchronous beacon update. */
1584
1585         /* Ignore interrupt in the future. */
1586         dev->irq_savedstate &= ~B43_IRQ_BEACON;
1587
1588         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1589         beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1590         beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1591
1592         /* Schedule interrupt manually, if busy. */
1593         if (beacon0_valid && beacon1_valid) {
1594                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1595                 dev->irq_savedstate |= B43_IRQ_BEACON;
1596                 return;
1597         }
1598
1599         if (unlikely(wl->beacon_templates_virgin)) {
1600                 /* We never uploaded a beacon before.
1601                  * Upload both templates now, but only mark one valid. */
1602                 wl->beacon_templates_virgin = 0;
1603                 b43_upload_beacon0(dev);
1604                 b43_upload_beacon1(dev);
1605                 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1606                 cmd |= B43_MACCMD_BEACON0_VALID;
1607                 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1608         } else {
1609                 if (!beacon0_valid) {
1610                         b43_upload_beacon0(dev);
1611                         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1612                         cmd |= B43_MACCMD_BEACON0_VALID;
1613                         b43_write32(dev, B43_MMIO_MACCMD, cmd);
1614                 } else if (!beacon1_valid) {
1615                         b43_upload_beacon1(dev);
1616                         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1617                         cmd |= B43_MACCMD_BEACON1_VALID;
1618                         b43_write32(dev, B43_MMIO_MACCMD, cmd);
1619                 }
1620         }
1621 }
1622
1623 static void b43_beacon_update_trigger_work(struct work_struct *work)
1624 {
1625         struct b43_wl *wl = container_of(work, struct b43_wl,
1626                                          beacon_update_trigger);
1627         struct b43_wldev *dev;
1628
1629         mutex_lock(&wl->mutex);
1630         dev = wl->current_dev;
1631         if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1632                 spin_lock_irq(&wl->irq_lock);
1633                 /* update beacon right away or defer to irq */
1634                 dev->irq_savedstate = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1635                 handle_irq_beacon(dev);
1636                 /* The handler might have updated the IRQ mask. */
1637                 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK,
1638                             dev->irq_savedstate);
1639                 mmiowb();
1640                 spin_unlock_irq(&wl->irq_lock);
1641         }
1642         mutex_unlock(&wl->mutex);
1643 }
1644
1645 /* Asynchronously update the packet templates in template RAM.
1646  * Locking: Requires wl->irq_lock to be locked. */
1647 static void b43_update_templates(struct b43_wl *wl)
1648 {
1649         struct sk_buff *beacon;
1650
1651         /* This is the top half of the ansynchronous beacon update.
1652          * The bottom half is the beacon IRQ.
1653          * Beacon update must be asynchronous to avoid sending an
1654          * invalid beacon. This can happen for example, if the firmware
1655          * transmits a beacon while we are updating it. */
1656
1657         /* We could modify the existing beacon and set the aid bit in
1658          * the TIM field, but that would probably require resizing and
1659          * moving of data within the beacon template.
1660          * Simply request a new beacon and let mac80211 do the hard work. */
1661         beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1662         if (unlikely(!beacon))
1663                 return;
1664
1665         if (wl->current_beacon)
1666                 dev_kfree_skb_any(wl->current_beacon);
1667         wl->current_beacon = beacon;
1668         wl->beacon0_uploaded = 0;
1669         wl->beacon1_uploaded = 0;
1670         queue_work(wl->hw->workqueue, &wl->beacon_update_trigger);
1671 }
1672
1673 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1674 {
1675         b43_time_lock(dev);
1676         if (dev->dev->id.revision >= 3) {
1677                 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1678                 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1679         } else {
1680                 b43_write16(dev, 0x606, (beacon_int >> 6));
1681                 b43_write16(dev, 0x610, beacon_int);
1682         }
1683         b43_time_unlock(dev);
1684         b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1685 }
1686
1687 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1688 {
1689         u16 reason;
1690
1691         /* Read the register that contains the reason code for the panic. */
1692         reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1693         b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1694
1695         switch (reason) {
1696         default:
1697                 b43dbg(dev->wl, "The panic reason is unknown.\n");
1698                 /* fallthrough */
1699         case B43_FWPANIC_DIE:
1700                 /* Do not restart the controller or firmware.
1701                  * The device is nonfunctional from now on.
1702                  * Restarting would result in this panic to trigger again,
1703                  * so we avoid that recursion. */
1704                 break;
1705         case B43_FWPANIC_RESTART:
1706                 b43_controller_restart(dev, "Microcode panic");
1707                 break;
1708         }
1709 }
1710
1711 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1712 {
1713         unsigned int i, cnt;
1714         u16 reason, marker_id, marker_line;
1715         __le16 *buf;
1716
1717         /* The proprietary firmware doesn't have this IRQ. */
1718         if (!dev->fw.opensource)
1719                 return;
1720
1721         /* Read the register that contains the reason code for this IRQ. */
1722         reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1723
1724         switch (reason) {
1725         case B43_DEBUGIRQ_PANIC:
1726                 b43_handle_firmware_panic(dev);
1727                 break;
1728         case B43_DEBUGIRQ_DUMP_SHM:
1729                 if (!B43_DEBUG)
1730                         break; /* Only with driver debugging enabled. */
1731                 buf = kmalloc(4096, GFP_ATOMIC);
1732                 if (!buf) {
1733                         b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1734                         goto out;
1735                 }
1736                 for (i = 0; i < 4096; i += 2) {
1737                         u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1738                         buf[i / 2] = cpu_to_le16(tmp);
1739                 }
1740                 b43info(dev->wl, "Shared memory dump:\n");
1741                 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1742                                16, 2, buf, 4096, 1);
1743                 kfree(buf);
1744                 break;
1745         case B43_DEBUGIRQ_DUMP_REGS:
1746                 if (!B43_DEBUG)
1747                         break; /* Only with driver debugging enabled. */
1748                 b43info(dev->wl, "Microcode register dump:\n");
1749                 for (i = 0, cnt = 0; i < 64; i++) {
1750                         u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1751                         if (cnt == 0)
1752                                 printk(KERN_INFO);
1753                         printk("r%02u: 0x%04X  ", i, tmp);
1754                         cnt++;
1755                         if (cnt == 6) {
1756                                 printk("\n");
1757                                 cnt = 0;
1758                         }
1759                 }
1760                 printk("\n");
1761                 break;
1762         case B43_DEBUGIRQ_MARKER:
1763                 if (!B43_DEBUG)
1764                         break; /* Only with driver debugging enabled. */
1765                 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1766                                            B43_MARKER_ID_REG);
1767                 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1768                                              B43_MARKER_LINE_REG);
1769                 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1770                         "at line number %u\n",
1771                         marker_id, marker_line);
1772                 break;
1773         default:
1774                 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1775                        reason);
1776         }
1777 out:
1778         /* Acknowledge the debug-IRQ, so the firmware can continue. */
1779         b43_shm_write16(dev, B43_SHM_SCRATCH,
1780                         B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1781 }
1782
1783 /* Interrupt handler bottom-half */
1784 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1785 {
1786         u32 reason;
1787         u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1788         u32 merged_dma_reason = 0;
1789         int i;
1790         unsigned long flags;
1791
1792         spin_lock_irqsave(&dev->wl->irq_lock, flags);
1793
1794         B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1795
1796         reason = dev->irq_reason;
1797         for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1798                 dma_reason[i] = dev->dma_reason[i];
1799                 merged_dma_reason |= dma_reason[i];
1800         }
1801
1802         if (unlikely(reason & B43_IRQ_MAC_TXERR))
1803                 b43err(dev->wl, "MAC transmission error\n");
1804
1805         if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1806                 b43err(dev->wl, "PHY transmission error\n");
1807                 rmb();
1808                 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1809                         atomic_set(&dev->phy.txerr_cnt,
1810                                    B43_PHY_TX_BADNESS_LIMIT);
1811                         b43err(dev->wl, "Too many PHY TX errors, "
1812                                         "restarting the controller\n");
1813                         b43_controller_restart(dev, "PHY TX errors");
1814                 }
1815         }
1816
1817         if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1818                                           B43_DMAIRQ_NONFATALMASK))) {
1819                 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1820                         b43err(dev->wl, "Fatal DMA error: "
1821                                "0x%08X, 0x%08X, 0x%08X, "
1822                                "0x%08X, 0x%08X, 0x%08X\n",
1823                                dma_reason[0], dma_reason[1],
1824                                dma_reason[2], dma_reason[3],
1825                                dma_reason[4], dma_reason[5]);
1826                         b43_controller_restart(dev, "DMA error");
1827                         mmiowb();
1828                         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1829                         return;
1830                 }
1831                 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1832                         b43err(dev->wl, "DMA error: "
1833                                "0x%08X, 0x%08X, 0x%08X, "
1834                                "0x%08X, 0x%08X, 0x%08X\n",
1835                                dma_reason[0], dma_reason[1],
1836                                dma_reason[2], dma_reason[3],
1837                                dma_reason[4], dma_reason[5]);
1838                 }
1839         }
1840
1841         if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1842                 handle_irq_ucode_debug(dev);
1843         if (reason & B43_IRQ_TBTT_INDI)
1844                 handle_irq_tbtt_indication(dev);
1845         if (reason & B43_IRQ_ATIM_END)
1846                 handle_irq_atim_end(dev);
1847         if (reason & B43_IRQ_BEACON)
1848                 handle_irq_beacon(dev);
1849         if (reason & B43_IRQ_PMQ)
1850                 handle_irq_pmq(dev);
1851         if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1852                 ;/* TODO */
1853         if (reason & B43_IRQ_NOISESAMPLE_OK)
1854                 handle_irq_noise(dev);
1855
1856         /* Check the DMA reason registers for received data. */
1857         if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1858                 if (b43_using_pio_transfers(dev))
1859                         b43_pio_rx(dev->pio.rx_queue);
1860                 else
1861                         b43_dma_rx(dev->dma.rx_ring);
1862         }
1863         B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1864         B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1865         B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1866         B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1867         B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1868
1869         if (reason & B43_IRQ_TX_OK)
1870                 handle_irq_transmit_status(dev);
1871
1872         b43_interrupt_enable(dev, dev->irq_savedstate);
1873         mmiowb();
1874         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1875 }
1876
1877 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1878 {
1879         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1880
1881         b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1882         b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1883         b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1884         b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1885         b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1886         b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1887 }
1888
1889 /* Interrupt handler top-half */
1890 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1891 {
1892         irqreturn_t ret = IRQ_NONE;
1893         struct b43_wldev *dev = dev_id;
1894         u32 reason;
1895
1896         if (!dev)
1897                 return IRQ_NONE;
1898
1899         spin_lock(&dev->wl->irq_lock);
1900
1901         if (b43_status(dev) < B43_STAT_STARTED)
1902                 goto out;
1903         reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1904         if (reason == 0xffffffff)       /* shared IRQ */
1905                 goto out;
1906         ret = IRQ_HANDLED;
1907         reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1908         if (!reason)
1909                 goto out;
1910
1911         dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1912             & 0x0001DC00;
1913         dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1914             & 0x0000DC00;
1915         dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1916             & 0x0000DC00;
1917         dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1918             & 0x0001DC00;
1919         dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1920             & 0x0000DC00;
1921         dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1922             & 0x0000DC00;
1923
1924         b43_interrupt_ack(dev, reason);
1925         /* disable all IRQs. They are enabled again in the bottom half. */
1926         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1927         /* save the reason code and call our bottom half. */
1928         dev->irq_reason = reason;
1929         tasklet_schedule(&dev->isr_tasklet);
1930       out:
1931         mmiowb();
1932         spin_unlock(&dev->wl->irq_lock);
1933
1934         return ret;
1935 }
1936
1937 static void do_release_fw(struct b43_firmware_file *fw)
1938 {
1939         release_firmware(fw->data);
1940         fw->data = NULL;
1941         fw->filename = NULL;
1942 }
1943
1944 static void b43_release_firmware(struct b43_wldev *dev)
1945 {
1946         do_release_fw(&dev->fw.ucode);
1947         do_release_fw(&dev->fw.pcm);
1948         do_release_fw(&dev->fw.initvals);
1949         do_release_fw(&dev->fw.initvals_band);
1950 }
1951
1952 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
1953 {
1954         const char *text;
1955
1956         text = "You must go to "
1957                "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware "
1958                "and download the correct firmware for this driver version. "
1959                "Please carefully read all instructions on this website.\n";
1960         if (error)
1961                 b43err(wl, text);
1962         else
1963                 b43warn(wl, text);
1964 }
1965
1966 static int do_request_fw(struct b43_wldev *dev,
1967                          const char *name,
1968                          struct b43_firmware_file *fw,
1969                          bool silent)
1970 {
1971         char path[sizeof(modparam_fwpostfix) + 32];
1972         const struct firmware *blob;
1973         struct b43_fw_header *hdr;
1974         u32 size;
1975         int err;
1976
1977         if (!name) {
1978                 /* Don't fetch anything. Free possibly cached firmware. */
1979                 do_release_fw(fw);
1980                 return 0;
1981         }
1982         if (fw->filename) {
1983                 if (strcmp(fw->filename, name) == 0)
1984                         return 0; /* Already have this fw. */
1985                 /* Free the cached firmware first. */
1986                 do_release_fw(fw);
1987         }
1988
1989         snprintf(path, ARRAY_SIZE(path),
1990                  "b43%s/%s.fw",
1991                  modparam_fwpostfix, name);
1992         err = request_firmware(&blob, path, dev->dev->dev);
1993         if (err == -ENOENT) {
1994                 if (!silent) {
1995                         b43err(dev->wl, "Firmware file \"%s\" not found\n",
1996                                path);
1997                 }
1998                 return err;
1999         } else if (err) {
2000                 b43err(dev->wl, "Firmware file \"%s\" request failed (err=%d)\n",
2001                        path, err);
2002                 return err;
2003         }
2004         if (blob->size < sizeof(struct b43_fw_header))
2005                 goto err_format;
2006         hdr = (struct b43_fw_header *)(blob->data);
2007         switch (hdr->type) {
2008         case B43_FW_TYPE_UCODE:
2009         case B43_FW_TYPE_PCM:
2010                 size = be32_to_cpu(hdr->size);
2011                 if (size != blob->size - sizeof(struct b43_fw_header))
2012                         goto err_format;
2013                 /* fallthrough */
2014         case B43_FW_TYPE_IV:
2015                 if (hdr->ver != 1)
2016                         goto err_format;
2017                 break;
2018         default:
2019                 goto err_format;
2020         }
2021
2022         fw->data = blob;
2023         fw->filename = name;
2024
2025         return 0;
2026
2027 err_format:
2028         b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
2029         release_firmware(blob);
2030
2031         return -EPROTO;
2032 }
2033
2034 static int b43_request_firmware(struct b43_wldev *dev)
2035 {
2036         struct b43_firmware *fw = &dev->fw;
2037         const u8 rev = dev->dev->id.revision;
2038         const char *filename;
2039         u32 tmshigh;
2040         int err;
2041
2042         /* Get microcode */
2043         tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
2044         if ((rev >= 5) && (rev <= 10))
2045                 filename = "ucode5";
2046         else if ((rev >= 11) && (rev <= 12))
2047                 filename = "ucode11";
2048         else if (rev >= 13)
2049                 filename = "ucode13";
2050         else
2051                 goto err_no_ucode;
2052         err = do_request_fw(dev, filename, &fw->ucode, 0);
2053         if (err)
2054                 goto err_load;
2055
2056         /* Get PCM code */
2057         if ((rev >= 5) && (rev <= 10))
2058                 filename = "pcm5";
2059         else if (rev >= 11)
2060                 filename = NULL;
2061         else
2062                 goto err_no_pcm;
2063         fw->pcm_request_failed = 0;
2064         err = do_request_fw(dev, filename, &fw->pcm, 1);
2065         if (err == -ENOENT) {
2066                 /* We did not find a PCM file? Not fatal, but
2067                  * core rev <= 10 must do without hwcrypto then. */
2068                 fw->pcm_request_failed = 1;
2069         } else if (err)
2070                 goto err_load;
2071
2072         /* Get initvals */
2073         switch (dev->phy.type) {
2074         case B43_PHYTYPE_A:
2075                 if ((rev >= 5) && (rev <= 10)) {
2076                         if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2077                                 filename = "a0g1initvals5";
2078                         else
2079                                 filename = "a0g0initvals5";
2080                 } else
2081                         goto err_no_initvals;
2082                 break;
2083         case B43_PHYTYPE_G:
2084                 if ((rev >= 5) && (rev <= 10))
2085                         filename = "b0g0initvals5";
2086                 else if (rev >= 13)
2087                         filename = "b0g0initvals13";
2088                 else
2089                         goto err_no_initvals;
2090                 break;
2091         case B43_PHYTYPE_N:
2092                 if ((rev >= 11) && (rev <= 12))
2093                         filename = "n0initvals11";
2094                 else
2095                         goto err_no_initvals;
2096                 break;
2097         default:
2098                 goto err_no_initvals;
2099         }
2100         err = do_request_fw(dev, filename, &fw->initvals, 0);
2101         if (err)
2102                 goto err_load;
2103
2104         /* Get bandswitch initvals */
2105         switch (dev->phy.type) {
2106         case B43_PHYTYPE_A:
2107                 if ((rev >= 5) && (rev <= 10)) {
2108                         if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2109                                 filename = "a0g1bsinitvals5";
2110                         else
2111                                 filename = "a0g0bsinitvals5";
2112                 } else if (rev >= 11)
2113                         filename = NULL;
2114                 else
2115                         goto err_no_initvals;
2116                 break;
2117         case B43_PHYTYPE_G:
2118                 if ((rev >= 5) && (rev <= 10))
2119                         filename = "b0g0bsinitvals5";
2120                 else if (rev >= 11)
2121                         filename = NULL;
2122                 else
2123                         goto err_no_initvals;
2124                 break;
2125         case B43_PHYTYPE_N:
2126                 if ((rev >= 11) && (rev <= 12))
2127                         filename = "n0bsinitvals11";
2128                 else
2129                         goto err_no_initvals;
2130                 break;
2131         default:
2132                 goto err_no_initvals;
2133         }
2134         err = do_request_fw(dev, filename, &fw->initvals_band, 0);
2135         if (err)
2136                 goto err_load;
2137
2138         return 0;
2139
2140 err_load:
2141         b43_print_fw_helptext(dev->wl, 1);
2142         goto error;
2143
2144 err_no_ucode:
2145         err = -ENODEV;
2146         b43err(dev->wl, "No microcode available for core rev %u\n", rev);
2147         goto error;
2148
2149 err_no_pcm:
2150         err = -ENODEV;
2151         b43err(dev->wl, "No PCM available for core rev %u\n", rev);
2152         goto error;
2153
2154 err_no_initvals:
2155         err = -ENODEV;
2156         b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
2157                "core rev %u\n", dev->phy.type, rev);
2158         goto error;
2159
2160 error:
2161         b43_release_firmware(dev);
2162         return err;
2163 }
2164
2165 static int b43_upload_microcode(struct b43_wldev *dev)
2166 {
2167         const size_t hdr_len = sizeof(struct b43_fw_header);
2168         const __be32 *data;
2169         unsigned int i, len;
2170         u16 fwrev, fwpatch, fwdate, fwtime;
2171         u32 tmp, macctl;
2172         int err = 0;
2173
2174         /* Jump the microcode PSM to offset 0 */
2175         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2176         B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2177         macctl |= B43_MACCTL_PSM_JMP0;
2178         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2179         /* Zero out all microcode PSM registers and shared memory. */
2180         for (i = 0; i < 64; i++)
2181                 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2182         for (i = 0; i < 4096; i += 2)
2183                 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2184
2185         /* Upload Microcode. */
2186         data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2187         len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2188         b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2189         for (i = 0; i < len; i++) {
2190                 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2191                 udelay(10);
2192         }
2193
2194         if (dev->fw.pcm.data) {
2195                 /* Upload PCM data. */
2196                 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2197                 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2198                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2199                 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2200                 /* No need for autoinc bit in SHM_HW */
2201                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2202                 for (i = 0; i < len; i++) {
2203                         b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2204                         udelay(10);
2205                 }
2206         }
2207
2208         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2209
2210         /* Start the microcode PSM */
2211         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2212         macctl &= ~B43_MACCTL_PSM_JMP0;
2213         macctl |= B43_MACCTL_PSM_RUN;
2214         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2215
2216         /* Wait for the microcode to load and respond */
2217         i = 0;
2218         while (1) {
2219                 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2220                 if (tmp == B43_IRQ_MAC_SUSPENDED)
2221                         break;
2222                 i++;
2223                 if (i >= 20) {
2224                         b43err(dev->wl, "Microcode not responding\n");
2225                         b43_print_fw_helptext(dev->wl, 1);
2226                         err = -ENODEV;
2227                         goto error;
2228                 }
2229                 msleep_interruptible(50);
2230                 if (signal_pending(current)) {
2231                         err = -EINTR;
2232                         goto error;
2233                 }
2234         }
2235         b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);       /* dummy read */
2236
2237         /* Get and check the revisions. */
2238         fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2239         fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2240         fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2241         fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2242
2243         if (fwrev <= 0x128) {
2244                 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2245                        "binary drivers older than version 4.x is unsupported. "
2246                        "You must upgrade your firmware files.\n");
2247                 b43_print_fw_helptext(dev->wl, 1);
2248                 err = -EOPNOTSUPP;
2249                 goto error;
2250         }
2251         dev->fw.rev = fwrev;
2252         dev->fw.patch = fwpatch;
2253         dev->fw.opensource = (fwdate == 0xFFFF);
2254
2255         if (dev->fw.opensource) {
2256                 /* Patchlevel info is encoded in the "time" field. */
2257                 dev->fw.patch = fwtime;
2258                 b43info(dev->wl, "Loading OpenSource firmware version %u.%u%s\n",
2259                         dev->fw.rev, dev->fw.patch,
2260                         dev->fw.pcm_request_failed ? " (Hardware crypto not supported)" : "");
2261         } else {
2262                 b43info(dev->wl, "Loading firmware version %u.%u "
2263                         "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2264                         fwrev, fwpatch,
2265                         (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2266                         (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2267                 if (dev->fw.pcm_request_failed) {
2268                         b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2269                                 "Hardware accelerated cryptography is disabled.\n");
2270                         b43_print_fw_helptext(dev->wl, 0);
2271                 }
2272         }
2273
2274         if (b43_is_old_txhdr_format(dev)) {
2275                 /* We're over the deadline, but we keep support for old fw
2276                  * until it turns out to be in major conflict with something new. */
2277                 b43warn(dev->wl, "You are using an old firmware image. "
2278                         "Support for old firmware will be removed soon "
2279                         "(official deadline was July 2008).\n");
2280                 b43_print_fw_helptext(dev->wl, 0);
2281         }
2282
2283         return 0;
2284
2285 error:
2286         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2287         macctl &= ~B43_MACCTL_PSM_RUN;
2288         macctl |= B43_MACCTL_PSM_JMP0;
2289         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2290
2291         return err;
2292 }
2293
2294 static int b43_write_initvals(struct b43_wldev *dev,
2295                               const struct b43_iv *ivals,
2296                               size_t count,
2297                               size_t array_size)
2298 {
2299         const struct b43_iv *iv;
2300         u16 offset;
2301         size_t i;
2302         bool bit32;
2303
2304         BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2305         iv = ivals;
2306         for (i = 0; i < count; i++) {
2307                 if (array_size < sizeof(iv->offset_size))
2308                         goto err_format;
2309                 array_size -= sizeof(iv->offset_size);
2310                 offset = be16_to_cpu(iv->offset_size);
2311                 bit32 = !!(offset & B43_IV_32BIT);
2312                 offset &= B43_IV_OFFSET_MASK;
2313                 if (offset >= 0x1000)
2314                         goto err_format;
2315                 if (bit32) {
2316                         u32 value;
2317
2318                         if (array_size < sizeof(iv->data.d32))
2319                                 goto err_format;
2320                         array_size -= sizeof(iv->data.d32);
2321
2322                         value = get_unaligned_be32(&iv->data.d32);
2323                         b43_write32(dev, offset, value);
2324
2325                         iv = (const struct b43_iv *)((const uint8_t *)iv +
2326                                                         sizeof(__be16) +
2327                                                         sizeof(__be32));
2328                 } else {
2329                         u16 value;
2330
2331                         if (array_size < sizeof(iv->data.d16))
2332                                 goto err_format;
2333                         array_size -= sizeof(iv->data.d16);
2334
2335                         value = be16_to_cpu(iv->data.d16);
2336                         b43_write16(dev, offset, value);
2337
2338                         iv = (const struct b43_iv *)((const uint8_t *)iv +
2339                                                         sizeof(__be16) +
2340                                                         sizeof(__be16));
2341                 }
2342         }
2343         if (array_size)
2344                 goto err_format;
2345
2346         return 0;
2347
2348 err_format:
2349         b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2350         b43_print_fw_helptext(dev->wl, 1);
2351
2352         return -EPROTO;
2353 }
2354
2355 static int b43_upload_initvals(struct b43_wldev *dev)
2356 {
2357         const size_t hdr_len = sizeof(struct b43_fw_header);
2358         const struct b43_fw_header *hdr;
2359         struct b43_firmware *fw = &dev->fw;
2360         const struct b43_iv *ivals;
2361         size_t count;
2362         int err;
2363
2364         hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2365         ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2366         count = be32_to_cpu(hdr->size);
2367         err = b43_write_initvals(dev, ivals, count,
2368                                  fw->initvals.data->size - hdr_len);
2369         if (err)
2370                 goto out;
2371         if (fw->initvals_band.data) {
2372                 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2373                 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2374                 count = be32_to_cpu(hdr->size);
2375                 err = b43_write_initvals(dev, ivals, count,
2376                                          fw->initvals_band.data->size - hdr_len);
2377                 if (err)
2378                         goto out;
2379         }
2380 out:
2381
2382         return err;
2383 }
2384
2385 /* Initialize the GPIOs
2386  * http://bcm-specs.sipsolutions.net/GPIO
2387  */
2388 static int b43_gpio_init(struct b43_wldev *dev)
2389 {
2390         struct ssb_bus *bus = dev->dev->bus;
2391         struct ssb_device *gpiodev, *pcidev = NULL;
2392         u32 mask, set;
2393
2394         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2395                     & ~B43_MACCTL_GPOUTSMSK);
2396
2397         b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
2398                     | 0x000F);
2399
2400         mask = 0x0000001F;
2401         set = 0x0000000F;
2402         if (dev->dev->bus->chip_id == 0x4301) {
2403                 mask |= 0x0060;
2404                 set |= 0x0060;
2405         }
2406         if (0 /* FIXME: conditional unknown */ ) {
2407                 b43_write16(dev, B43_MMIO_GPIO_MASK,
2408                             b43_read16(dev, B43_MMIO_GPIO_MASK)
2409                             | 0x0100);
2410                 mask |= 0x0180;
2411                 set |= 0x0180;
2412         }
2413         if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
2414                 b43_write16(dev, B43_MMIO_GPIO_MASK,
2415                             b43_read16(dev, B43_MMIO_GPIO_MASK)
2416                             | 0x0200);
2417                 mask |= 0x0200;
2418                 set |= 0x0200;
2419         }
2420         if (dev->dev->id.revision >= 2)
2421                 mask |= 0x0010; /* FIXME: This is redundant. */
2422
2423 #ifdef CONFIG_SSB_DRIVER_PCICORE
2424         pcidev = bus->pcicore.dev;
2425 #endif
2426         gpiodev = bus->chipco.dev ? : pcidev;
2427         if (!gpiodev)
2428                 return 0;
2429         ssb_write32(gpiodev, B43_GPIO_CONTROL,
2430                     (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2431                      & mask) | set);
2432
2433         return 0;
2434 }
2435
2436 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2437 static void b43_gpio_cleanup(struct b43_wldev *dev)
2438 {
2439         struct ssb_bus *bus = dev->dev->bus;
2440         struct ssb_device *gpiodev, *pcidev = NULL;
2441
2442 #ifdef CONFIG_SSB_DRIVER_PCICORE
2443         pcidev = bus->pcicore.dev;
2444 #endif
2445         gpiodev = bus->chipco.dev ? : pcidev;
2446         if (!gpiodev)
2447                 return;
2448         ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2449 }
2450
2451 /* http://bcm-specs.sipsolutions.net/EnableMac */
2452 void b43_mac_enable(struct b43_wldev *dev)
2453 {
2454         if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2455                 u16 fwstate;
2456
2457                 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2458                                          B43_SHM_SH_UCODESTAT);
2459                 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2460                     (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2461                         b43err(dev->wl, "b43_mac_enable(): The firmware "
2462                                "should be suspended, but current state is %u\n",
2463                                fwstate);
2464                 }
2465         }
2466
2467         dev->mac_suspended--;
2468         B43_WARN_ON(dev->mac_suspended < 0);
2469         if (dev->mac_suspended == 0) {
2470                 b43_write32(dev, B43_MMIO_MACCTL,
2471                             b43_read32(dev, B43_MMIO_MACCTL)
2472                             | B43_MACCTL_ENABLED);
2473                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2474                             B43_IRQ_MAC_SUSPENDED);
2475                 /* Commit writes */
2476                 b43_read32(dev, B43_MMIO_MACCTL);
2477                 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2478                 b43_power_saving_ctl_bits(dev, 0);
2479         }
2480 }
2481
2482 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2483 void b43_mac_suspend(struct b43_wldev *dev)
2484 {
2485         int i;
2486         u32 tmp;
2487
2488         might_sleep();
2489         B43_WARN_ON(dev->mac_suspended < 0);
2490
2491         if (dev->mac_suspended == 0) {
2492                 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2493                 b43_write32(dev, B43_MMIO_MACCTL,
2494                             b43_read32(dev, B43_MMIO_MACCTL)
2495                             & ~B43_MACCTL_ENABLED);
2496                 /* force pci to flush the write */
2497                 b43_read32(dev, B43_MMIO_MACCTL);
2498                 for (i = 35; i; i--) {
2499                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2500                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2501                                 goto out;
2502                         udelay(10);
2503                 }
2504                 /* Hm, it seems this will take some time. Use msleep(). */
2505                 for (i = 40; i; i--) {
2506                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2507                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2508                                 goto out;
2509                         msleep(1);
2510                 }
2511                 b43err(dev->wl, "MAC suspend failed\n");
2512         }
2513 out:
2514         dev->mac_suspended++;
2515 }
2516
2517 static void b43_adjust_opmode(struct b43_wldev *dev)
2518 {
2519         struct b43_wl *wl = dev->wl;
2520         u32 ctl;
2521         u16 cfp_pretbtt;
2522
2523         ctl = b43_read32(dev, B43_MMIO_MACCTL);
2524         /* Reset status to STA infrastructure mode. */
2525         ctl &= ~B43_MACCTL_AP;
2526         ctl &= ~B43_MACCTL_KEEP_CTL;
2527         ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2528         ctl &= ~B43_MACCTL_KEEP_BAD;
2529         ctl &= ~B43_MACCTL_PROMISC;
2530         ctl &= ~B43_MACCTL_BEACPROMISC;
2531         ctl |= B43_MACCTL_INFRA;
2532
2533         if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2534             b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2535                 ctl |= B43_MACCTL_AP;
2536         else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2537                 ctl &= ~B43_MACCTL_INFRA;
2538
2539         if (wl->filter_flags & FIF_CONTROL)
2540                 ctl |= B43_MACCTL_KEEP_CTL;
2541         if (wl->filter_flags & FIF_FCSFAIL)
2542                 ctl |= B43_MACCTL_KEEP_BAD;
2543         if (wl->filter_flags & FIF_PLCPFAIL)
2544                 ctl |= B43_MACCTL_KEEP_BADPLCP;
2545         if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2546                 ctl |= B43_MACCTL_PROMISC;
2547         if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2548                 ctl |= B43_MACCTL_BEACPROMISC;
2549
2550         /* Workaround: On old hardware the HW-MAC-address-filter
2551          * doesn't work properly, so always run promisc in filter
2552          * it in software. */
2553         if (dev->dev->id.revision <= 4)
2554                 ctl |= B43_MACCTL_PROMISC;
2555
2556         b43_write32(dev, B43_MMIO_MACCTL, ctl);
2557
2558         cfp_pretbtt = 2;
2559         if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2560                 if (dev->dev->bus->chip_id == 0x4306 &&
2561                     dev->dev->bus->chip_rev == 3)
2562                         cfp_pretbtt = 100;
2563                 else
2564                         cfp_pretbtt = 50;
2565         }
2566         b43_write16(dev, 0x612, cfp_pretbtt);
2567 }
2568
2569 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2570 {
2571         u16 offset;
2572
2573         if (is_ofdm) {
2574                 offset = 0x480;
2575                 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2576         } else {
2577                 offset = 0x4C0;
2578                 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2579         }
2580         b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2581                         b43_shm_read16(dev, B43_SHM_SHARED, offset));
2582 }
2583
2584 static void b43_rate_memory_init(struct b43_wldev *dev)
2585 {
2586         switch (dev->phy.type) {
2587         case B43_PHYTYPE_A:
2588         case B43_PHYTYPE_G:
2589         case B43_PHYTYPE_N:
2590                 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2591                 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2592                 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2593                 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2594                 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2595                 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2596                 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2597                 if (dev->phy.type == B43_PHYTYPE_A)
2598                         break;
2599                 /* fallthrough */
2600         case B43_PHYTYPE_B:
2601                 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2602                 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2603                 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2604                 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2605                 break;
2606         default:
2607                 B43_WARN_ON(1);
2608         }
2609 }
2610
2611 /* Set the default values for the PHY TX Control Words. */
2612 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2613 {
2614         u16 ctl = 0;
2615
2616         ctl |= B43_TXH_PHY_ENC_CCK;
2617         ctl |= B43_TXH_PHY_ANT01AUTO;
2618         ctl |= B43_TXH_PHY_TXPWR;
2619
2620         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2621         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2622         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
2623 }
2624
2625 /* Set the TX-Antenna for management frames sent by firmware. */
2626 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2627 {
2628         u16 ant;
2629         u16 tmp;
2630
2631         ant = b43_antenna_to_phyctl(antenna);
2632
2633         /* For ACK/CTS */
2634         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2635         tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2636         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2637         /* For Probe Resposes */
2638         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2639         tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
2640         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2641 }
2642
2643 /* This is the opposite of b43_chip_init() */
2644 static void b43_chip_exit(struct b43_wldev *dev)
2645 {
2646         b43_phy_exit(dev);
2647         b43_gpio_cleanup(dev);
2648         /* firmware is released later */
2649 }
2650
2651 /* Initialize the chip
2652  * http://bcm-specs.sipsolutions.net/ChipInit
2653  */
2654 static int b43_chip_init(struct b43_wldev *dev)
2655 {
2656         struct b43_phy *phy = &dev->phy;
2657         int err;
2658         u32 value32, macctl;
2659         u16 value16;
2660
2661         /* Initialize the MAC control */
2662         macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
2663         if (dev->phy.gmode)
2664                 macctl |= B43_MACCTL_GMODE;
2665         macctl |= B43_MACCTL_INFRA;
2666         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2667
2668         err = b43_request_firmware(dev);
2669         if (err)
2670                 goto out;
2671         err = b43_upload_microcode(dev);
2672         if (err)
2673                 goto out;       /* firmware is released later */
2674
2675         err = b43_gpio_init(dev);
2676         if (err)
2677                 goto out;       /* firmware is released later */
2678
2679         err = b43_upload_initvals(dev);
2680         if (err)
2681                 goto err_gpio_clean;
2682
2683         /* Turn the Analog on and initialize the PHY. */
2684         phy->ops->switch_analog(dev, 1);
2685         err = b43_phy_init(dev);
2686         if (err)
2687                 goto err_gpio_clean;
2688
2689         /* Disable Interference Mitigation. */
2690         if (phy->ops->interf_mitigation)
2691                 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
2692
2693         /* Select the antennae */
2694         if (phy->ops->set_rx_antenna)
2695                 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2696         b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2697
2698         if (phy->type == B43_PHYTYPE_B) {
2699                 value16 = b43_read16(dev, 0x005E);
2700                 value16 |= 0x0004;
2701                 b43_write16(dev, 0x005E, value16);
2702         }
2703         b43_write32(dev, 0x0100, 0x01000000);
2704         if (dev->dev->id.revision < 5)
2705                 b43_write32(dev, 0x010C, 0x01000000);
2706
2707         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2708                     & ~B43_MACCTL_INFRA);
2709         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2710                     | B43_MACCTL_INFRA);
2711
2712         /* Probe Response Timeout value */
2713         /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2714         b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2715
2716         /* Initially set the wireless operation mode. */
2717         b43_adjust_opmode(dev);
2718
2719         if (dev->dev->id.revision < 3) {
2720                 b43_write16(dev, 0x060E, 0x0000);
2721                 b43_write16(dev, 0x0610, 0x8000);
2722                 b43_write16(dev, 0x0604, 0x0000);
2723                 b43_write16(dev, 0x0606, 0x0200);
2724         } else {
2725                 b43_write32(dev, 0x0188, 0x80000000);
2726                 b43_write32(dev, 0x018C, 0x02000000);
2727         }
2728         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2729         b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2730         b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2731         b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2732         b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2733         b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2734         b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2735
2736         value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2737         value32 |= 0x00100000;
2738         ssb_write32(dev->dev, SSB_TMSLOW, value32);
2739
2740         b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2741                     dev->dev->bus->chipco.fast_pwrup_delay);
2742
2743         err = 0;
2744         b43dbg(dev->wl, "Chip initialized\n");
2745 out:
2746         return err;
2747
2748 err_gpio_clean:
2749         b43_gpio_cleanup(dev);
2750         return err;
2751 }
2752
2753 static void b43_periodic_every60sec(struct b43_wldev *dev)
2754 {
2755         const struct b43_phy_operations *ops = dev->phy.ops;
2756
2757         if (ops->pwork_60sec)
2758                 ops->pwork_60sec(dev);
2759
2760         /* Force check the TX power emission now. */
2761         b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
2762 }
2763
2764 static void b43_periodic_every30sec(struct b43_wldev *dev)
2765 {
2766         /* Update device statistics. */
2767         b43_calculate_link_quality(dev);
2768 }
2769
2770 static void b43_periodic_every15sec(struct b43_wldev *dev)
2771 {
2772         struct b43_phy *phy = &dev->phy;
2773         u16 wdr;
2774
2775         if (dev->fw.opensource) {
2776                 /* Check if the firmware is still alive.
2777                  * It will reset the watchdog counter to 0 in its idle loop. */
2778                 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
2779                 if (unlikely(wdr)) {
2780                         b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
2781                         b43_controller_restart(dev, "Firmware watchdog");
2782                         return;
2783                 } else {
2784                         b43_shm_write16(dev, B43_SHM_SCRATCH,
2785                                         B43_WATCHDOG_REG, 1);
2786                 }
2787         }
2788
2789         if (phy->ops->pwork_15sec)
2790                 phy->ops->pwork_15sec(dev);
2791
2792         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2793         wmb();
2794 }
2795
2796 static void do_periodic_work(struct b43_wldev *dev)
2797 {
2798         unsigned int state;
2799
2800         state = dev->periodic_state;
2801         if (state % 4 == 0)
2802                 b43_periodic_every60sec(dev);
2803         if (state % 2 == 0)
2804                 b43_periodic_every30sec(dev);
2805         b43_periodic_every15sec(dev);
2806 }
2807
2808 /* Periodic work locking policy:
2809  *      The whole periodic work handler is protected by
2810  *      wl->mutex. If another lock is needed somewhere in the
2811  *      pwork callchain, it's aquired in-place, where it's needed.
2812  */
2813 static void b43_periodic_work_handler(struct work_struct *work)
2814 {
2815         struct b43_wldev *dev = container_of(work, struct b43_wldev,
2816                                              periodic_work.work);
2817         struct b43_wl *wl = dev->wl;
2818         unsigned long delay;
2819
2820         mutex_lock(&wl->mutex);
2821
2822         if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2823                 goto out;
2824         if (b43_debug(dev, B43_DBG_PWORK_STOP))
2825                 goto out_requeue;
2826
2827         do_periodic_work(dev);
2828
2829         dev->periodic_state++;
2830 out_requeue:
2831         if (b43_debug(dev, B43_DBG_PWORK_FAST))
2832                 delay = msecs_to_jiffies(50);
2833         else
2834                 delay = round_jiffies_relative(HZ * 15);
2835         queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2836 out:
2837         mutex_unlock(&wl->mutex);
2838 }
2839
2840 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2841 {
2842         struct delayed_work *work = &dev->periodic_work;
2843
2844         dev->periodic_state = 0;
2845         INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2846         queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2847 }
2848
2849 /* Check if communication with the device works correctly. */
2850 static int b43_validate_chipaccess(struct b43_wldev *dev)
2851 {
2852         u32 v, backup;
2853
2854         backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2855
2856         /* Check for read/write and endianness problems. */
2857         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2858         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2859                 goto error;
2860         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2861         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2862                 goto error;
2863
2864         b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2865
2866         if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2867                 /* The 32bit register shadows the two 16bit registers
2868                  * with update sideeffects. Validate this. */
2869                 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2870                 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2871                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2872                         goto error;
2873                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2874                         goto error;
2875         }
2876         b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2877
2878         v = b43_read32(dev, B43_MMIO_MACCTL);
2879         v |= B43_MACCTL_GMODE;
2880         if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2881                 goto error;
2882
2883         return 0;
2884 error:
2885         b43err(dev->wl, "Failed to validate the chipaccess\n");
2886         return -ENODEV;
2887 }
2888
2889 static void b43_security_init(struct b43_wldev *dev)
2890 {
2891         dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2892         B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2893         dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2894         /* KTP is a word address, but we address SHM bytewise.
2895          * So multiply by two.
2896          */
2897         dev->ktp *= 2;
2898         if (dev->dev->id.revision >= 5) {
2899                 /* Number of RCMTA address slots */
2900                 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2901         }
2902         b43_clear_keys(dev);
2903 }
2904
2905 static int b43_rng_read(struct hwrng *rng, u32 * data)
2906 {
2907         struct b43_wl *wl = (struct b43_wl *)rng->priv;
2908         unsigned long flags;
2909
2910         /* Don't take wl->mutex here, as it could deadlock with
2911          * hwrng internal locking. It's not needed to take
2912          * wl->mutex here, anyway. */
2913
2914         spin_lock_irqsave(&wl->irq_lock, flags);
2915         *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2916         spin_unlock_irqrestore(&wl->irq_lock, flags);
2917
2918         return (sizeof(u16));
2919 }
2920
2921 static void b43_rng_exit(struct b43_wl *wl)
2922 {
2923         if (wl->rng_initialized)
2924                 hwrng_unregister(&wl->rng);
2925 }
2926
2927 static int b43_rng_init(struct b43_wl *wl)
2928 {
2929         int err;
2930
2931         snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2932                  "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2933         wl->rng.name = wl->rng_name;
2934         wl->rng.data_read = b43_rng_read;
2935         wl->rng.priv = (unsigned long)wl;
2936         wl->rng_initialized = 1;
2937         err = hwrng_register(&wl->rng);
2938         if (err) {
2939                 wl->rng_initialized = 0;
2940                 b43err(wl, "Failed to register the random "
2941                        "number generator (%d)\n", err);
2942         }
2943
2944         return err;
2945 }
2946
2947 static int b43_op_tx(struct ieee80211_hw *hw,
2948                      struct sk_buff *skb)
2949 {
2950         struct b43_wl *wl = hw_to_b43_wl(hw);
2951         struct b43_wldev *dev = wl->current_dev;
2952         unsigned long flags;
2953         int err;
2954
2955         if (unlikely(skb->len < 2 + 2 + 6)) {
2956                 /* Too short, this can't be a valid frame. */
2957                 goto drop_packet;
2958         }
2959         B43_WARN_ON(skb_shinfo(skb)->nr_frags);
2960         if (unlikely(!dev))
2961                 goto drop_packet;
2962
2963         /* Transmissions on seperate queues can run concurrently. */
2964         read_lock_irqsave(&wl->tx_lock, flags);
2965
2966         err = -ENODEV;
2967         if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2968                 if (b43_using_pio_transfers(dev))
2969                         err = b43_pio_tx(dev, skb);
2970                 else
2971                         err = b43_dma_tx(dev, skb);
2972         }
2973
2974         read_unlock_irqrestore(&wl->tx_lock, flags);
2975
2976         if (unlikely(err))
2977                 goto drop_packet;
2978         return NETDEV_TX_OK;
2979
2980 drop_packet:
2981         /* We can not transmit this packet. Drop it. */
2982         dev_kfree_skb_any(skb);
2983         return NETDEV_TX_OK;
2984 }
2985
2986 /* Locking: wl->irq_lock */
2987 static void b43_qos_params_upload(struct b43_wldev *dev,
2988                                   const struct ieee80211_tx_queue_params *p,
2989                                   u16 shm_offset)
2990 {
2991         u16 params[B43_NR_QOSPARAMS];
2992         int bslots, tmp;
2993         unsigned int i;
2994
2995         bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
2996
2997         memset(&params, 0, sizeof(params));
2998
2999         params[B43_QOSPARAM_TXOP] = p->txop * 32;
3000         params[B43_QOSPARAM_CWMIN] = p->cw_min;
3001         params[B43_QOSPARAM_CWMAX] = p->cw_max;
3002         params[B43_QOSPARAM_CWCUR] = p->cw_min;
3003         params[B43_QOSPARAM_AIFS] = p->aifs;
3004         params[B43_QOSPARAM_BSLOTS] = bslots;
3005         params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3006
3007         for (i = 0; i < ARRAY_SIZE(params); i++) {
3008                 if (i == B43_QOSPARAM_STATUS) {
3009                         tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3010                                              shm_offset + (i * 2));
3011                         /* Mark the parameters as updated. */
3012                         tmp |= 0x100;
3013                         b43_shm_write16(dev, B43_SHM_SHARED,
3014                                         shm_offset + (i * 2),
3015                                         tmp);
3016                 } else {
3017                         b43_shm_write16(dev, B43_SHM_SHARED,
3018                                         shm_offset + (i * 2),
3019                                         params[i]);
3020                 }
3021         }
3022 }
3023
3024 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3025 static const u16 b43_qos_shm_offsets[] = {
3026         /* [mac80211-queue-nr] = SHM_OFFSET, */
3027         [0] = B43_QOS_VOICE,
3028         [1] = B43_QOS_VIDEO,
3029         [2] = B43_QOS_BESTEFFORT,
3030         [3] = B43_QOS_BACKGROUND,
3031 };
3032
3033 /* Update all QOS parameters in hardware. */
3034 static void b43_qos_upload_all(struct b43_wldev *dev)
3035 {
3036         struct b43_wl *wl = dev->wl;
3037         struct b43_qos_params *params;
3038         unsigned int i;
3039
3040         BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3041                      ARRAY_SIZE(wl->qos_params));
3042
3043         b43_mac_suspend(dev);
3044         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3045                 params = &(wl->qos_params[i]);
3046                 b43_qos_params_upload(dev, &(params->p),
3047                                       b43_qos_shm_offsets[i]);
3048         }
3049         b43_mac_enable(dev);
3050 }
3051
3052 static void b43_qos_clear(struct b43_wl *wl)
3053 {
3054         struct b43_qos_params *params;
3055         unsigned int i;
3056
3057         /* Initialize QoS parameters to sane defaults. */
3058
3059         BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3060                      ARRAY_SIZE(wl->qos_params));
3061
3062         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3063                 params = &(wl->qos_params[i]);
3064
3065                 switch (b43_qos_shm_offsets[i]) {
3066                 case B43_QOS_VOICE:
3067                         params->p.txop = 0;
3068                         params->p.aifs = 2;
3069                         params->p.cw_min = 0x0001;
3070                         params->p.cw_max = 0x0001;
3071                         break;
3072                 case B43_QOS_VIDEO:
3073                         params->p.txop = 0;
3074                         params->p.aifs = 2;
3075                         params->p.cw_min = 0x0001;
3076                         params->p.cw_max = 0x0001;
3077                         break;
3078                 case B43_QOS_BESTEFFORT:
3079                         params->p.txop = 0;
3080                         params->p.aifs = 3;
3081                         params->p.cw_min = 0x0001;
3082                         params->p.cw_max = 0x03FF;
3083                         break;
3084                 case B43_QOS_BACKGROUND:
3085                         params->p.txop = 0;
3086                         params->p.aifs = 7;
3087                         params->p.cw_min = 0x0001;
3088                         params->p.cw_max = 0x03FF;
3089                         break;
3090                 default:
3091                         B43_WARN_ON(1);
3092                 }
3093         }
3094 }
3095
3096 /* Initialize the core's QOS capabilities */
3097 static void b43_qos_init(struct b43_wldev *dev)
3098 {
3099         /* Upload the current QOS parameters. */
3100         b43_qos_upload_all(dev);
3101
3102         /* Enable QOS support. */
3103         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3104         b43_write16(dev, B43_MMIO_IFSCTL,
3105                     b43_read16(dev, B43_MMIO_IFSCTL)
3106                     | B43_MMIO_IFSCTL_USE_EDCF);
3107 }
3108
3109 static int b43_op_conf_tx(struct ieee80211_hw *hw, u16 _queue,
3110                           const struct ieee80211_tx_queue_params *params)
3111 {
3112         struct b43_wl *wl = hw_to_b43_wl(hw);
3113         struct b43_wldev *dev;
3114         unsigned int queue = (unsigned int)_queue;
3115         int err = -ENODEV;
3116
3117         if (queue >= ARRAY_SIZE(wl->qos_params)) {
3118                 /* Queue not available or don't support setting
3119                  * params on this queue. Return success to not
3120                  * confuse mac80211. */
3121                 return 0;
3122         }
3123         BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3124                      ARRAY_SIZE(wl->qos_params));
3125
3126         mutex_lock(&wl->mutex);
3127         dev = wl->current_dev;
3128         if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3129                 goto out_unlock;
3130
3131         memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3132         b43_mac_suspend(dev);
3133         b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3134                               b43_qos_shm_offsets[queue]);
3135         b43_mac_enable(dev);
3136         err = 0;
3137
3138 out_unlock:
3139         mutex_unlock(&wl->mutex);
3140
3141         return err;
3142 }
3143
3144 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
3145                                struct ieee80211_tx_queue_stats *stats)
3146 {
3147         struct b43_wl *wl = hw_to_b43_wl(hw);
3148         struct b43_wldev *dev = wl->current_dev;
3149         unsigned long flags;
3150         int err = -ENODEV;
3151
3152         if (!dev)
3153                 goto out;
3154         spin_lock_irqsave(&wl->irq_lock, flags);
3155         if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
3156                 if (b43_using_pio_transfers(dev))
3157                         b43_pio_get_tx_stats(dev, stats);
3158                 else
3159                         b43_dma_get_tx_stats(dev, stats);
3160                 err = 0;
3161         }
3162         spin_unlock_irqrestore(&wl->irq_lock, flags);
3163 out:
3164         return err;
3165 }
3166
3167 static int b43_op_get_stats(struct ieee80211_hw *hw,
3168                             struct ieee80211_low_level_stats *stats)
3169 {
3170         struct b43_wl *wl = hw_to_b43_wl(hw);
3171         unsigned long flags;
3172
3173         spin_lock_irqsave(&wl->irq_lock, flags);
3174         memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3175         spin_unlock_irqrestore(&wl->irq_lock, flags);
3176
3177         return 0;
3178 }
3179
3180 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3181 {
3182         struct ssb_device *sdev = dev->dev;
3183         u32 tmslow;
3184
3185         tmslow = ssb_read32(sdev, SSB_TMSLOW);
3186         tmslow &= ~B43_TMSLOW_GMODE;
3187         tmslow |= B43_TMSLOW_PHYRESET;
3188         tmslow |= SSB_TMSLOW_FGC;
3189         ssb_write32(sdev, SSB_TMSLOW, tmslow);
3190         msleep(1);
3191
3192         tmslow = ssb_read32(sdev, SSB_TMSLOW);
3193         tmslow &= ~SSB_TMSLOW_FGC;
3194         tmslow |= B43_TMSLOW_PHYRESET;
3195         ssb_write32(sdev, SSB_TMSLOW, tmslow);
3196         msleep(1);
3197 }
3198
3199 static const char * band_to_string(enum ieee80211_band band)
3200 {
3201         switch (band) {
3202         case IEEE80211_BAND_5GHZ:
3203                 return "5";
3204         case IEEE80211_BAND_2GHZ:
3205                 return "2.4";
3206         default:
3207                 break;
3208         }
3209         B43_WARN_ON(1);
3210         return "";
3211 }
3212
3213 /* Expects wl->mutex locked */
3214 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3215 {
3216         struct b43_wldev *up_dev = NULL;
3217         struct b43_wldev *down_dev;
3218         struct b43_wldev *d;
3219         int err;
3220         bool uninitialized_var(gmode);
3221         int prev_status;
3222
3223         /* Find a device and PHY which supports the band. */
3224         list_for_each_entry(d, &wl->devlist, list) {
3225                 switch (chan->band) {
3226                 case IEEE80211_BAND_5GHZ:
3227                         if (d->phy.supports_5ghz) {
3228                                 up_dev = d;
3229                                 gmode = 0;
3230                         }
3231                         break;
3232                 case IEEE80211_BAND_2GHZ:
3233                         if (d->phy.supports_2ghz) {
3234                                 up_dev = d;
3235                                 gmode = 1;
3236                         }
3237                         break;
3238                 default:
3239                         B43_WARN_ON(1);
3240                         return -EINVAL;
3241                 }
3242                 if (up_dev)
3243                         break;
3244         }
3245         if (!up_dev) {
3246                 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3247                        band_to_string(chan->band));
3248                 return -ENODEV;
3249         }
3250         if ((up_dev == wl->current_dev) &&
3251             (!!wl->current_dev->phy.gmode == !!gmode)) {
3252                 /* This device is already running. */
3253                 return 0;
3254         }
3255         b43dbg(wl, "Switching to %s-GHz band\n",
3256                band_to_string(chan->band));
3257         down_dev = wl->current_dev;
3258
3259         prev_status = b43_status(down_dev);
3260         /* Shutdown the currently running core. */
3261         if (prev_status >= B43_STAT_STARTED)
3262                 b43_wireless_core_stop(down_dev);
3263         if (prev_status >= B43_STAT_INITIALIZED)
3264                 b43_wireless_core_exit(down_dev);
3265
3266         if (down_dev != up_dev) {
3267                 /* We switch to a different core, so we put PHY into
3268                  * RESET on the old core. */
3269                 b43_put_phy_into_reset(down_dev);
3270         }
3271
3272         /* Now start the new core. */
3273         up_dev->phy.gmode = gmode;
3274         if (prev_status >= B43_STAT_INITIALIZED) {
3275                 err = b43_wireless_core_init(up_dev);
3276                 if (err) {
3277                         b43err(wl, "Fatal: Could not initialize device for "
3278                                "selected %s-GHz band\n",
3279                                band_to_string(chan->band));
3280                         goto init_failure;
3281                 }
3282         }
3283         if (prev_status >= B43_STAT_STARTED) {
3284                 err = b43_wireless_core_start(up_dev);
3285                 if (err) {
3286                         b43err(wl, "Fatal: Coult not start device for "
3287                                "selected %s-GHz band\n",
3288                                band_to_string(chan->band));
3289                         b43_wireless_core_exit(up_dev);
3290                         goto init_failure;
3291                 }
3292         }
3293         B43_WARN_ON(b43_status(up_dev) != prev_status);
3294
3295         wl->current_dev = up_dev;
3296
3297         return 0;
3298 init_failure:
3299         /* Whoops, failed to init the new core. No core is operating now. */
3300         wl->current_dev = NULL;
3301         return err;
3302 }
3303
3304 /* Write the short and long frame retry limit values. */
3305 static void b43_set_retry_limits(struct b43_wldev *dev,
3306                                  unsigned int short_retry,
3307                                  unsigned int long_retry)
3308 {
3309         /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3310          * the chip-internal counter. */
3311         short_retry = min(short_retry, (unsigned int)0xF);
3312         long_retry = min(long_retry, (unsigned int)0xF);
3313
3314         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3315                         short_retry);
3316         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3317                         long_retry);
3318 }
3319
3320 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3321 {
3322         struct b43_wl *wl = hw_to_b43_wl(hw);
3323         struct b43_wldev *dev;
3324         struct b43_phy *phy;
3325         struct ieee80211_conf *conf = &hw->conf;
3326         unsigned long flags;
3327         int antenna;
3328         int err = 0;
3329
3330         mutex_lock(&wl->mutex);
3331
3332         /* Switch the band (if necessary). This might change the active core. */
3333         err = b43_switch_band(wl, conf->channel);
3334         if (err)
3335                 goto out_unlock_mutex;
3336         dev = wl->current_dev;
3337         phy = &dev->phy;
3338
3339         b43_mac_suspend(dev);
3340
3341         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3342                 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3343                                           conf->long_frame_max_tx_count);
3344         changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3345         if (!changed)
3346                 goto out_mac_enable;
3347
3348         /* Switch to the requested channel.
3349          * The firmware takes care of races with the TX handler. */
3350         if (conf->channel->hw_value != phy->channel)
3351                 b43_switch_channel(dev, conf->channel->hw_value);
3352
3353         dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3354
3355         /* Adjust the desired TX power level. */
3356         if (conf->power_level != 0) {
3357                 spin_lock_irqsave(&wl->irq_lock, flags);
3358                 if (conf->power_level != phy->desired_txpower) {
3359                         phy->desired_txpower = conf->power_level;
3360                         b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3361                                                    B43_TXPWR_IGNORE_TSSI);
3362                 }
3363                 spin_unlock_irqrestore(&wl->irq_lock, flags);
3364         }
3365
3366         /* Antennas for RX and management frame TX. */
3367         antenna = B43_ANTENNA_DEFAULT;
3368         b43_mgmtframe_txantenna(dev, antenna);
3369         antenna = B43_ANTENNA_DEFAULT;
3370         if (phy->ops->set_rx_antenna)
3371                 phy->ops->set_rx_antenna(dev, antenna);
3372
3373         /* Update templates for AP/mesh mode. */
3374         if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3375             b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
3376                 b43_set_beacon_int(dev, conf->beacon_int);
3377
3378         if (!!conf->radio_enabled != phy->radio_on) {
3379                 if (conf->radio_enabled) {
3380                         b43_software_rfkill(dev, RFKILL_STATE_UNBLOCKED);
3381                         b43info(dev->wl, "Radio turned on by software\n");
3382                         if (!dev->radio_hw_enable) {
3383                                 b43info(dev->wl, "The hardware RF-kill button "
3384                                         "still turns the radio physically off. "
3385                                         "Press the button to turn it on.\n");
3386                         }
3387                 } else {
3388                         b43_software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED);
3389                         b43info(dev->wl, "Radio turned off by software\n");
3390                 }
3391         }
3392
3393 out_mac_enable:
3394         b43_mac_enable(dev);
3395 out_unlock_mutex:
3396         mutex_unlock(&wl->mutex);
3397
3398         return err;
3399 }
3400
3401 static void b43_update_basic_rates(struct b43_wldev *dev, u64 brates)
3402 {
3403         struct ieee80211_supported_band *sband =
3404                 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3405         struct ieee80211_rate *rate;
3406         int i;
3407         u16 basic, direct, offset, basic_offset, rateptr;
3408
3409         for (i = 0; i < sband->n_bitrates; i++) {
3410                 rate = &sband->bitrates[i];
3411
3412                 if (b43_is_cck_rate(rate->hw_value)) {
3413                         direct = B43_SHM_SH_CCKDIRECT;
3414                         basic = B43_SHM_SH_CCKBASIC;
3415                         offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3416                         offset &= 0xF;
3417                 } else {
3418                         direct = B43_SHM_SH_OFDMDIRECT;
3419                         basic = B43_SHM_SH_OFDMBASIC;
3420                         offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3421                         offset &= 0xF;
3422                 }
3423
3424                 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3425
3426                 if (b43_is_cck_rate(rate->hw_value)) {
3427                         basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3428                         basic_offset &= 0xF;
3429                 } else {
3430                         basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3431                         basic_offset &= 0xF;
3432                 }
3433
3434                 /*
3435                  * Get the pointer that we need to point to
3436                  * from the direct map
3437                  */
3438                 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3439                                          direct + 2 * basic_offset);
3440                 /* and write it to the basic map */
3441                 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3442                                 rateptr);
3443         }
3444 }
3445
3446 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3447                                     struct ieee80211_vif *vif,
3448                                     struct ieee80211_bss_conf *conf,
3449                                     u32 changed)
3450 {
3451         struct b43_wl *wl = hw_to_b43_wl(hw);
3452         struct b43_wldev *dev;
3453
3454         mutex_lock(&wl->mutex);
3455
3456         dev = wl->current_dev;
3457         if (!dev || b43_status(dev) < B43_STAT_STARTED)
3458                 goto out_unlock_mutex;
3459         b43_mac_suspend(dev);
3460
3461         if (changed & BSS_CHANGED_BASIC_RATES)
3462                 b43_update_basic_rates(dev, conf->basic_rates);
3463
3464         if (changed & BSS_CHANGED_ERP_SLOT) {
3465                 if (conf->use_short_slot)
3466                         b43_short_slot_timing_enable(dev);
3467                 else
3468                         b43_short_slot_timing_disable(dev);
3469         }
3470
3471         b43_mac_enable(dev);
3472 out_unlock_mutex:
3473         mutex_unlock(&wl->mutex);
3474
3475         return;
3476 }
3477
3478 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3479                            const u8 *local_addr, const u8 *addr,
3480                            struct ieee80211_key_conf *key)
3481 {
3482         struct b43_wl *wl = hw_to_b43_wl(hw);
3483         struct b43_wldev *dev;
3484         u8 algorithm;
3485         u8 index;
3486         int err;
3487
3488         if (modparam_nohwcrypt)
3489                 return -ENOSPC; /* User disabled HW-crypto */
3490
3491         mutex_lock(&wl->mutex);
3492         spin_lock_irq(&wl->irq_lock);
3493         write_lock(&wl->tx_lock);
3494         /* Why do we need all this locking here?
3495          * mutex     -> Every config operation must take it.
3496          * irq_lock  -> We modify the dev->key array, which is accessed
3497          *              in the IRQ handlers.
3498          * tx_lock   -> We modify the dev->key array, which is accessed
3499          *              in the TX handler.
3500          */
3501
3502         dev = wl->current_dev;
3503         err = -ENODEV;
3504         if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
3505                 goto out_unlock;
3506
3507         if (dev->fw.pcm_request_failed) {
3508                 /* We don't have firmware for the crypto engine.
3509                  * Must use software-crypto. */
3510                 err = -EOPNOTSUPP;
3511                 goto out_unlock;
3512         }
3513
3514         err = -EINVAL;
3515         switch (key->alg) {
3516         case ALG_WEP:
3517                 if (key->keylen == LEN_WEP40)
3518                         algorithm = B43_SEC_ALGO_WEP40;
3519                 else
3520                         algorithm = B43_SEC_ALGO_WEP104;
3521                 break;
3522         case ALG_TKIP:
3523                 algorithm = B43_SEC_ALGO_TKIP;
3524                 break;
3525         case ALG_CCMP:
3526                 algorithm = B43_SEC_ALGO_AES;
3527                 break;
3528         default:
3529                 B43_WARN_ON(1);
3530                 goto out_unlock;
3531         }
3532         index = (u8) (key->keyidx);
3533         if (index > 3)
3534                 goto out_unlock;
3535
3536         switch (cmd) {
3537         case SET_KEY:
3538                 if (algorithm == B43_SEC_ALGO_TKIP) {
3539                         /* FIXME: No TKIP hardware encryption for now. */
3540                         err = -EOPNOTSUPP;
3541                         goto out_unlock;
3542                 }
3543
3544                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3545                         /* Pairwise key with an assigned MAC address. */
3546                         err = b43_key_write(dev, -1, algorithm,
3547                                             key->key, key->keylen, addr, key);
3548                 } else {
3549                         /* Group key */
3550                         err = b43_key_write(dev, index, algorithm,
3551                                             key->key, key->keylen, NULL, key);
3552                 }
3553                 if (err)
3554                         goto out_unlock;
3555
3556                 if (algorithm == B43_SEC_ALGO_WEP40 ||
3557                     algorithm == B43_SEC_ALGO_WEP104) {
3558                         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
3559                 } else {
3560                         b43_hf_write(dev,
3561                                      b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
3562                 }
3563                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3564                 break;
3565         case DISABLE_KEY: {
3566                 err = b43_key_clear(dev, key->hw_key_idx);
3567                 if (err)
3568                         goto out_unlock;
3569                 break;
3570         }
3571         default:
3572                 B43_WARN_ON(1);
3573         }
3574
3575 out_unlock:
3576         if (!err) {
3577                 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
3578                        "mac: %pM\n",
3579                        cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
3580                        addr);
3581                 b43_dump_keymemory(dev);
3582         }
3583         write_unlock(&wl->tx_lock);
3584         spin_unlock_irq(&wl->irq_lock);
3585         mutex_unlock(&wl->mutex);
3586
3587         return err;
3588 }
3589
3590 static void b43_op_configure_filter(struct ieee80211_hw *hw,
3591                                     unsigned int changed, unsigned int *fflags,
3592                                     int mc_count, struct dev_addr_list *mc_list)
3593 {
3594         struct b43_wl *wl = hw_to_b43_wl(hw);
3595         struct b43_wldev *dev = wl->current_dev;
3596         unsigned long flags;
3597
3598         if (!dev) {
3599                 *fflags = 0;
3600                 return;
3601         }
3602
3603         spin_lock_irqsave(&wl->irq_lock, flags);
3604         *fflags &= FIF_PROMISC_IN_BSS |
3605                   FIF_ALLMULTI |
3606                   FIF_FCSFAIL |
3607                   FIF_PLCPFAIL |
3608                   FIF_CONTROL |
3609                   FIF_OTHER_BSS |
3610                   FIF_BCN_PRBRESP_PROMISC;
3611
3612         changed &= FIF_PROMISC_IN_BSS |
3613                    FIF_ALLMULTI |
3614                    FIF_FCSFAIL |
3615                    FIF_PLCPFAIL |
3616                    FIF_CONTROL |
3617                    FIF_OTHER_BSS |
3618                    FIF_BCN_PRBRESP_PROMISC;
3619
3620         wl->filter_flags = *fflags;
3621
3622         if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
3623                 b43_adjust_opmode(dev);
3624         spin_unlock_irqrestore(&wl->irq_lock, flags);
3625 }
3626
3627 static int b43_op_config_interface(struct ieee80211_hw *hw,
3628                                    struct ieee80211_vif *vif,
3629                                    struct ieee80211_if_conf *conf)
3630 {
3631         struct b43_wl *wl = hw_to_b43_wl(hw);
3632         struct b43_wldev *dev = wl->current_dev;
3633         unsigned long flags;
3634
3635         if (!dev)
3636                 return -ENODEV;
3637         mutex_lock(&wl->mutex);
3638         spin_lock_irqsave(&wl->irq_lock, flags);
3639         B43_WARN_ON(wl->vif != vif);
3640         if (conf->bssid)
3641                 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3642         else
3643                 memset(wl->bssid, 0, ETH_ALEN);
3644         if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3645                 if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3646                     b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT)) {
3647                         B43_WARN_ON(vif->type != wl->if_type);
3648                         if (conf->changed & IEEE80211_IFCC_BEACON)
3649                                 b43_update_templates(wl);
3650                 } else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) {
3651                         if (conf->changed & IEEE80211_IFCC_BEACON)
3652                                 b43_update_templates(wl);
3653                 }
3654                 b43_write_mac_bssid_templates(dev);
3655         }
3656         spin_unlock_irqrestore(&wl->irq_lock, flags);
3657         mutex_unlock(&wl->mutex);
3658
3659         return 0;
3660 }
3661
3662 /* Locking: wl->mutex */
3663 static void b43_wireless_core_stop(struct b43_wldev *dev)
3664 {
3665         struct b43_wl *wl = dev->wl;
3666         unsigned long flags;
3667
3668         if (b43_status(dev) < B43_STAT_STARTED)
3669                 return;
3670
3671         /* Disable and sync interrupts. We must do this before than
3672          * setting the status to INITIALIZED, as the interrupt handler
3673          * won't care about IRQs then. */
3674         spin_lock_irqsave(&wl->irq_lock, flags);
3675         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
3676         b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
3677         spin_unlock_irqrestore(&wl->irq_lock, flags);
3678         b43_synchronize_irq(dev);
3679
3680         write_lock_irqsave(&wl->tx_lock, flags);
3681         b43_set_status(dev, B43_STAT_INITIALIZED);
3682         write_unlock_irqrestore(&wl->tx_lock, flags);
3683
3684         b43_pio_stop(dev);
3685         mutex_unlock(&wl->mutex);
3686         /* Must unlock as it would otherwise deadlock. No races here.
3687          * Cancel the possibly running self-rearming periodic work. */
3688         cancel_delayed_work_sync(&dev->periodic_work);
3689         mutex_lock(&wl->mutex);
3690
3691         b43_mac_suspend(dev);
3692         free_irq(dev->dev->irq, dev);
3693         b43dbg(wl, "Wireless interface stopped\n");
3694 }
3695
3696 /* Locking: wl->mutex */
3697 static int b43_wireless_core_start(struct b43_wldev *dev)
3698 {
3699         int err;
3700
3701         B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3702
3703         drain_txstatus_queue(dev);
3704         err = request_irq(dev->dev->irq, b43_interrupt_handler,
3705                           IRQF_SHARED, KBUILD_MODNAME, dev);
3706         if (err) {
3707                 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3708                 goto out;
3709         }
3710
3711         /* We are ready to run. */
3712         b43_set_status(dev, B43_STAT_STARTED);
3713
3714         /* Start data flow (TX/RX). */
3715         b43_mac_enable(dev);
3716         b43_interrupt_enable(dev, dev->irq_savedstate);
3717
3718         /* Start maintainance work */
3719         b43_periodic_tasks_setup(dev);
3720
3721         b43dbg(dev->wl, "Wireless interface started\n");
3722       out:
3723         return err;
3724 }
3725
3726 /* Get PHY and RADIO versioning numbers */
3727 static int b43_phy_versioning(struct b43_wldev *dev)
3728 {
3729         struct b43_phy *phy = &dev->phy;
3730         u32 tmp;
3731         u8 analog_type;
3732         u8 phy_type;
3733         u8 phy_rev;
3734         u16 radio_manuf;
3735         u16 radio_ver;
3736         u16 radio_rev;
3737         int unsupported = 0;
3738
3739         /* Get PHY versioning */
3740         tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3741         analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3742         phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3743         phy_rev = (tmp & B43_PHYVER_VERSION);
3744         switch (phy_type) {
3745         case B43_PHYTYPE_A:
3746                 if (phy_rev >= 4)
3747                         unsupported = 1;
3748                 break;
3749         case B43_PHYTYPE_B:
3750                 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3751                     && phy_rev != 7)
3752                         unsupported = 1;
3753                 break;
3754         case B43_PHYTYPE_G:
3755                 if (phy_rev > 9)
3756                         unsupported = 1;
3757                 break;
3758 #ifdef CONFIG_B43_NPHY
3759         case B43_PHYTYPE_N:
3760                 if (phy_rev > 4)
3761                         unsupported = 1;
3762                 break;
3763 #endif
3764 #ifdef CONFIG_B43_PHY_LP
3765         case B43_PHYTYPE_LP:
3766                 if (phy_rev > 1)
3767                         unsupported = 1;
3768                 break;
3769 #endif
3770         default:
3771                 unsupported = 1;
3772         };
3773         if (unsupported) {
3774                 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3775                        "(Analog %u, Type %u, Revision %u)\n",
3776                        analog_type, phy_type, phy_rev);
3777                 return -EOPNOTSUPP;
3778         }
3779         b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3780                analog_type, phy_type, phy_rev);
3781
3782         /* Get RADIO versioning */
3783         if (dev->dev->bus->chip_id == 0x4317) {
3784                 if (dev->dev->bus->chip_rev == 0)
3785                         tmp = 0x3205017F;
3786                 else if (dev->dev->bus->chip_rev == 1)
3787                         tmp = 0x4205017F;
3788                 else
3789                         tmp = 0x5205017F;
3790         } else {
3791                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3792                 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3793                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3794                 tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH) << 16;
3795         }
3796         radio_manuf = (tmp & 0x00000FFF);
3797         radio_ver = (tmp & 0x0FFFF000) >> 12;
3798         radio_rev = (tmp & 0xF0000000) >> 28;
3799         if (radio_manuf != 0x17F /* Broadcom */)
3800                 unsupported = 1;
3801         switch (phy_type) {
3802         case B43_PHYTYPE_A:
3803                 if (radio_ver != 0x2060)
3804                         unsupported = 1;
3805                 if (radio_rev != 1)
3806                         unsupported = 1;
3807                 if (radio_manuf != 0x17F)
3808                         unsupported = 1;
3809                 break;
3810         case B43_PHYTYPE_B:
3811                 if ((radio_ver & 0xFFF0) != 0x2050)
3812                         unsupported = 1;
3813                 break;
3814         case B43_PHYTYPE_G:
3815                 if (radio_ver != 0x2050)
3816                         unsupported = 1;
3817                 break;
3818         case B43_PHYTYPE_N:
3819                 if (radio_ver != 0x2055 && radio_ver != 0x2056)
3820                         unsupported = 1;
3821                 break;
3822         case B43_PHYTYPE_LP:
3823                 if (radio_ver != 0x2062)
3824                         unsupported = 1;
3825                 break;
3826         default:
3827                 B43_WARN_ON(1);
3828         }
3829         if (unsupported) {
3830                 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3831                        "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3832                        radio_manuf, radio_ver, radio_rev);
3833                 return -EOPNOTSUPP;
3834         }
3835         b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3836                radio_manuf, radio_ver, radio_rev);
3837
3838         phy->radio_manuf = radio_manuf;
3839         phy->radio_ver = radio_ver;
3840         phy->radio_rev = radio_rev;
3841
3842         phy->analog = analog_type;
3843         phy->type = phy_type;
3844         phy->rev = phy_rev;
3845
3846         return 0;
3847 }
3848
3849 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3850                                       struct b43_phy *phy)
3851 {
3852         phy->hardware_power_control = !!modparam_hwpctl;
3853         phy->next_txpwr_check_time = jiffies;
3854         /* PHY TX errors counter. */
3855         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3856 }
3857
3858 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3859 {
3860         dev->dfq_valid = 0;
3861
3862         /* Assume the radio is enabled. If it's not enabled, the state will
3863          * immediately get fixed on the first periodic work run. */
3864         dev->radio_hw_enable = 1;
3865
3866         /* Stats */
3867         memset(&dev->stats, 0, sizeof(dev->stats));
3868
3869         setup_struct_phy_for_init(dev, &dev->phy);
3870
3871         /* IRQ related flags */
3872         dev->irq_reason = 0;
3873         memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3874         dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3875
3876         dev->mac_suspended = 1;
3877
3878         /* Noise calculation context */
3879         memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3880 }
3881
3882 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3883 {
3884         struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3885         u64 hf;
3886
3887         if (!modparam_btcoex)
3888                 return;
3889         if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3890                 return;
3891         if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3892                 return;
3893
3894         hf = b43_hf_read(dev);
3895         if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3896                 hf |= B43_HF_BTCOEXALT;
3897         else
3898                 hf |= B43_HF_BTCOEX;
3899         b43_hf_write(dev, hf);
3900 }
3901
3902 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3903 {
3904         if (!modparam_btcoex)
3905                 return;
3906         //TODO
3907 }
3908
3909 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3910 {
3911 #ifdef CONFIG_SSB_DRIVER_PCICORE
3912         struct ssb_bus *bus = dev->dev->bus;
3913         u32 tmp;
3914
3915         if (bus->pcicore.dev &&
3916             bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3917             bus->pcicore.dev->id.revision <= 5) {
3918                 /* IMCFGLO timeouts workaround. */
3919                 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3920                 tmp &= ~SSB_IMCFGLO_REQTO;
3921                 tmp &= ~SSB_IMCFGLO_SERTO;
3922                 switch (bus->bustype) {
3923                 case SSB_BUSTYPE_PCI:
3924                 case SSB_BUSTYPE_PCMCIA:
3925                         tmp |= 0x32;
3926                         break;
3927                 case SSB_BUSTYPE_SSB:
3928                         tmp |= 0x53;
3929                         break;
3930                 }
3931                 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3932         }
3933 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3934 }
3935
3936 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
3937 {
3938         u16 pu_delay;
3939
3940         /* The time value is in microseconds. */
3941         if (dev->phy.type == B43_PHYTYPE_A)
3942                 pu_delay = 3700;
3943         else
3944                 pu_delay = 1050;
3945         if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
3946                 pu_delay = 500;
3947         if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
3948                 pu_delay = max(pu_delay, (u16)2400);
3949
3950         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
3951 }
3952
3953 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
3954 static void b43_set_pretbtt(struct b43_wldev *dev)
3955 {
3956         u16 pretbtt;
3957
3958         /* The time value is in microseconds. */
3959         if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
3960                 pretbtt = 2;
3961         } else {
3962                 if (dev->phy.type == B43_PHYTYPE_A)
3963                         pretbtt = 120;
3964                 else
3965                         pretbtt = 250;
3966         }
3967         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
3968         b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
3969 }
3970
3971 /* Shutdown a wireless core */
3972 /* Locking: wl->mutex */
3973 static void b43_wireless_core_exit(struct b43_wldev *dev)
3974 {
3975         u32 macctl;
3976
3977         B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3978         if (b43_status(dev) != B43_STAT_INITIALIZED)
3979                 return;
3980         b43_set_status(dev, B43_STAT_UNINIT);
3981
3982         /* Stop the microcode PSM. */
3983         macctl = b43_read32(dev, B43_MMIO_MACCTL);
3984         macctl &= ~B43_MACCTL_PSM_RUN;
3985         macctl |= B43_MACCTL_PSM_JMP0;
3986         b43_write32(dev, B43_MMIO_MACCTL, macctl);
3987
3988         if (!dev->suspend_in_progress) {
3989                 b43_leds_exit(dev);
3990                 b43_rng_exit(dev->wl);
3991         }
3992         b43_dma_free(dev);
3993         b43_pio_free(dev);
3994         b43_chip_exit(dev);
3995         dev->phy.ops->switch_analog(dev, 0);
3996         if (dev->wl->current_beacon) {
3997                 dev_kfree_skb_any(dev->wl->current_beacon);
3998                 dev->wl->current_beacon = NULL;
3999         }
4000
4001         ssb_device_disable(dev->dev, 0);
4002         ssb_bus_may_powerdown(dev->dev->bus);
4003 }
4004
4005 /* Initialize a wireless core */
4006 static int b43_wireless_core_init(struct b43_wldev *dev)
4007 {
4008         struct b43_wl *wl = dev->wl;
4009         struct ssb_bus *bus = dev->dev->bus;
4010         struct ssb_sprom *sprom = &bus->sprom;
4011         struct b43_phy *phy = &dev->phy;
4012         int err;
4013         u64 hf;
4014         u32 tmp;
4015
4016         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4017
4018         err = ssb_bus_powerup(bus, 0);
4019         if (err)
4020                 goto out;
4021         if (!ssb_device_is_enabled(dev->dev)) {
4022                 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
4023                 b43_wireless_core_reset(dev, tmp);
4024         }
4025
4026         /* Reset all data structures. */
4027         setup_struct_wldev_for_init(dev);
4028         phy->ops->prepare_structs(dev);
4029
4030         /* Enable IRQ routing to this device. */
4031         ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
4032
4033         b43_imcfglo_timeouts_workaround(dev);
4034         b43_bluetooth_coext_disable(dev);
4035         if (phy->ops->prepare_hardware) {
4036                 err = phy->ops->prepare_hardware(dev);
4037                 if (err)
4038                         goto err_busdown;
4039         }
4040         err = b43_chip_init(dev);
4041         if (err)
4042                 goto err_busdown;
4043         b43_shm_write16(dev, B43_SHM_SHARED,
4044                         B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
4045         hf = b43_hf_read(dev);
4046         if (phy->type == B43_PHYTYPE_G) {
4047                 hf |= B43_HF_SYMW;
4048                 if (phy->rev == 1)
4049                         hf |= B43_HF_GDCW;
4050                 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4051                         hf |= B43_HF_OFDMPABOOST;
4052         } else if (phy->type == B43_PHYTYPE_B) {
4053                 hf |= B43_HF_SYMW;
4054                 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
4055                         hf &= ~B43_HF_GDCW;
4056         }
4057         b43_hf_write(dev, hf);
4058
4059         b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4060                              B43_DEFAULT_LONG_RETRY_LIMIT);
4061         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4062         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4063
4064         /* Disable sending probe responses from firmware.
4065          * Setting the MaxTime to one usec will always trigger
4066          * a timeout, so we never send any probe resp.
4067          * A timeout of zero is infinite. */
4068         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4069
4070         b43_rate_memory_init(dev);
4071         b43_set_phytxctl_defaults(dev);
4072
4073         /* Minimum Contention Window */
4074         if (phy->type == B43_PHYTYPE_B) {
4075                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4076         } else {
4077                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4078         }
4079         /* Maximum Contention Window */
4080         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4081
4082         if ((dev->dev->bus->bustype == SSB_BUSTYPE_PCMCIA) || B43_FORCE_PIO) {
4083                 dev->__using_pio_transfers = 1;
4084                 err = b43_pio_init(dev);
4085         } else {
4086                 dev->__using_pio_transfers = 0;
4087                 err = b43_dma_init(dev);
4088         }
4089         if (err)
4090                 goto err_chip_exit;
4091         b43_qos_init(dev);
4092         b43_set_synth_pu_delay(dev, 1);
4093         b43_bluetooth_coext_enable(dev);
4094
4095         ssb_bus_powerup(bus, 1);        /* Enable dynamic PCTL */
4096         b43_upload_card_macaddress(dev);
4097         b43_security_init(dev);
4098         if (!dev->suspend_in_progress)
4099                 b43_rng_init(wl);
4100
4101         b43_set_status(dev, B43_STAT_INITIALIZED);
4102
4103         if (!dev->suspend_in_progress)
4104                 b43_leds_init(dev);
4105 out:
4106         return err;
4107
4108 err_chip_exit:
4109         b43_chip_exit(dev);
4110 err_busdown:
4111         ssb_bus_may_powerdown(bus);
4112         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4113         return err;
4114 }
4115
4116 static int b43_op_add_interface(struct ieee80211_hw *hw,
4117                                 struct ieee80211_if_init_conf *conf)
4118 {
4119         struct b43_wl *wl = hw_to_b43_wl(hw);
4120         struct b43_wldev *dev;
4121         unsigned long flags;
4122         int err = -EOPNOTSUPP;
4123
4124         /* TODO: allow WDS/AP devices to coexist */
4125
4126         if (conf->type != NL80211_IFTYPE_AP &&
4127             conf->type != NL80211_IFTYPE_MESH_POINT &&
4128             conf->type != NL80211_IFTYPE_STATION &&
4129             conf->type != NL80211_IFTYPE_WDS &&
4130             conf->type != NL80211_IFTYPE_ADHOC)
4131                 return -EOPNOTSUPP;
4132
4133         mutex_lock(&wl->mutex);
4134         if (wl->operating)
4135                 goto out_mutex_unlock;
4136
4137         b43dbg(wl, "Adding Interface type %d\n", conf->type);
4138
4139         dev = wl->current_dev;
4140         wl->operating = 1;
4141         wl->vif = conf->vif;
4142         wl->if_type = conf->type;
4143         memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
4144
4145         spin_lock_irqsave(&wl->irq_lock, flags);
4146         b43_adjust_opmode(dev);
4147         b43_set_pretbtt(dev);
4148         b43_set_synth_pu_delay(dev, 0);
4149         b43_upload_card_macaddress(dev);
4150         spin_unlock_irqrestore(&wl->irq_lock, flags);
4151
4152         err = 0;
4153  out_mutex_unlock:
4154         mutex_unlock(&wl->mutex);
4155
4156         return err;
4157 }
4158
4159 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4160                                     struct ieee80211_if_init_conf *conf)
4161 {
4162         struct b43_wl *wl = hw_to_b43_wl(hw);
4163         struct b43_wldev *dev = wl->current_dev;
4164         unsigned long flags;
4165
4166         b43dbg(wl, "Removing Interface type %d\n", conf->type);
4167
4168         mutex_lock(&wl->mutex);
4169
4170         B43_WARN_ON(!wl->operating);
4171         B43_WARN_ON(wl->vif != conf->vif);
4172         wl->vif = NULL;
4173
4174         wl->operating = 0;
4175
4176         spin_lock_irqsave(&wl->irq_lock, flags);
4177         b43_adjust_opmode(dev);
4178         memset(wl->mac_addr, 0, ETH_ALEN);
4179         b43_upload_card_macaddress(dev);
4180         spin_unlock_irqrestore(&wl->irq_lock, flags);
4181
4182         mutex_unlock(&wl->mutex);
4183 }
4184
4185 static int b43_op_start(struct ieee80211_hw *hw)
4186 {
4187         struct b43_wl *wl = hw_to_b43_wl(hw);
4188         struct b43_wldev *dev = wl->current_dev;
4189         int did_init = 0;
4190         int err = 0;
4191         bool do_rfkill_exit = 0;
4192
4193         /* Kill all old instance specific information to make sure
4194          * the card won't use it in the short timeframe between start
4195          * and mac80211 reconfiguring it. */
4196         memset(wl->bssid, 0, ETH_ALEN);
4197         memset(wl->mac_addr, 0, ETH_ALEN);
4198         wl->filter_flags = 0;
4199         wl->radiotap_enabled = 0;
4200         b43_qos_clear(wl);
4201         wl->beacon0_uploaded = 0;
4202         wl->beacon1_uploaded = 0;
4203         wl->beacon_templates_virgin = 1;
4204
4205         /* First register RFkill.
4206          * LEDs that are registered later depend on it. */
4207         b43_rfkill_init(dev);
4208
4209         mutex_lock(&wl->mutex);
4210
4211         if (b43_status(dev) < B43_STAT_INITIALIZED) {
4212                 err = b43_wireless_core_init(dev);
4213                 if (err) {
4214                         do_rfkill_exit = 1;
4215                         goto out_mutex_unlock;
4216                 }
4217                 did_init = 1;
4218         }
4219
4220         if (b43_status(dev) < B43_STAT_STARTED) {
4221                 err = b43_wireless_core_start(dev);
4222                 if (err) {
4223                         if (did_init)
4224                                 b43_wireless_core_exit(dev);
4225                         do_rfkill_exit = 1;
4226                         goto out_mutex_unlock;
4227                 }
4228         }
4229
4230  out_mutex_unlock:
4231         mutex_unlock(&wl->mutex);
4232
4233         if (do_rfkill_exit)
4234                 b43_rfkill_exit(dev);
4235
4236         return err;
4237 }
4238
4239 static void b43_op_stop(struct ieee80211_hw *hw)
4240 {
4241         struct b43_wl *wl = hw_to_b43_wl(hw);
4242         struct b43_wldev *dev = wl->current_dev;
4243
4244         b43_rfkill_exit(dev);
4245         cancel_work_sync(&(wl->beacon_update_trigger));
4246
4247         mutex_lock(&wl->mutex);
4248         if (b43_status(dev) >= B43_STAT_STARTED)
4249                 b43_wireless_core_stop(dev);
4250         b43_wireless_core_exit(dev);
4251         mutex_unlock(&wl->mutex);
4252
4253         cancel_work_sync(&(wl->txpower_adjust_work));
4254 }
4255
4256 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4257                                  struct ieee80211_sta *sta, bool set)
4258 {
4259         struct b43_wl *wl = hw_to_b43_wl(hw);
4260         unsigned long flags;
4261
4262         spin_lock_irqsave(&wl->irq_lock, flags);
4263         b43_update_templates(wl);
4264         spin_unlock_irqrestore(&wl->irq_lock, flags);
4265
4266         return 0;
4267 }
4268
4269 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4270                               struct ieee80211_vif *vif,
4271                               enum sta_notify_cmd notify_cmd,
4272                               struct ieee80211_sta *sta)
4273 {
4274         struct b43_wl *wl = hw_to_b43_wl(hw);
4275
4276         B43_WARN_ON(!vif || wl->vif != vif);
4277 }
4278
4279 static const struct ieee80211_ops b43_hw_ops = {
4280         .tx                     = b43_op_tx,
4281         .conf_tx                = b43_op_conf_tx,
4282         .add_interface          = b43_op_add_interface,
4283         .remove_interface       = b43_op_remove_interface,
4284         .config                 = b43_op_config,
4285         .bss_info_changed       = b43_op_bss_info_changed,
4286         .config_interface       = b43_op_config_interface,
4287         .configure_filter       = b43_op_configure_filter,
4288         .set_key                = b43_op_set_key,
4289         .get_stats              = b43_op_get_stats,
4290         .get_tx_stats           = b43_op_get_tx_stats,
4291         .start                  = b43_op_start,
4292         .stop                   = b43_op_stop,
4293         .set_tim                = b43_op_beacon_set_tim,
4294         .sta_notify             = b43_op_sta_notify,
4295 };
4296
4297 /* Hard-reset the chip. Do not call this directly.
4298  * Use b43_controller_restart()
4299  */
4300 static void b43_chip_reset(struct work_struct *work)
4301 {
4302         struct b43_wldev *dev =
4303             container_of(work, struct b43_wldev, restart_work);
4304         struct b43_wl *wl = dev->wl;
4305         int err = 0;
4306         int prev_status;
4307
4308         mutex_lock(&wl->mutex);
4309
4310         prev_status = b43_status(dev);
4311         /* Bring the device down... */
4312         if (prev_status >= B43_STAT_STARTED)
4313                 b43_wireless_core_stop(dev);
4314         if (prev_status >= B43_STAT_INITIALIZED)
4315                 b43_wireless_core_exit(dev);
4316
4317         /* ...and up again. */
4318         if (prev_status >= B43_STAT_INITIALIZED) {
4319                 err = b43_wireless_core_init(dev);
4320                 if (err)
4321                         goto out;
4322         }
4323         if (prev_status >= B43_STAT_STARTED) {
4324                 err = b43_wireless_core_start(dev);
4325                 if (err) {
4326                         b43_wireless_core_exit(dev);
4327                         goto out;
4328                 }
4329         }
4330 out:
4331         if (err)
4332                 wl->current_dev = NULL; /* Failed to init the dev. */
4333         mutex_unlock(&wl->mutex);
4334         if (err)
4335                 b43err(wl, "Controller restart FAILED\n");
4336         else
4337                 b43info(wl, "Controller restarted\n");
4338 }
4339
4340 static int b43_setup_bands(struct b43_wldev *dev,
4341                            bool have_2ghz_phy, bool have_5ghz_phy)
4342 {
4343         struct ieee80211_hw *hw = dev->wl->hw;
4344
4345         if (have_2ghz_phy)
4346                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
4347         if (dev->phy.type == B43_PHYTYPE_N) {
4348                 if (have_5ghz_phy)
4349                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
4350         } else {
4351                 if (have_5ghz_phy)
4352                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
4353         }
4354
4355         dev->phy.supports_2ghz = have_2ghz_phy;
4356         dev->phy.supports_5ghz = have_5ghz_phy;
4357
4358         return 0;
4359 }
4360
4361 static void b43_wireless_core_detach(struct b43_wldev *dev)
4362 {
4363         /* We release firmware that late to not be required to re-request
4364          * is all the time when we reinit the core. */
4365         b43_release_firmware(dev);
4366         b43_phy_free(dev);
4367 }
4368
4369 static int b43_wireless_core_attach(struct b43_wldev *dev)
4370 {
4371         struct b43_wl *wl = dev->wl;
4372         struct ssb_bus *bus = dev->dev->bus;
4373         struct pci_dev *pdev = bus->host_pci;
4374         int err;
4375         bool have_2ghz_phy = 0, have_5ghz_phy = 0;
4376         u32 tmp;
4377
4378         /* Do NOT do any device initialization here.
4379          * Do it in wireless_core_init() instead.
4380          * This function is for gathering basic information about the HW, only.
4381          * Also some structs may be set up here. But most likely you want to have
4382          * that in core_init(), too.
4383          */
4384
4385         err = ssb_bus_powerup(bus, 0);
4386         if (err) {
4387                 b43err(wl, "Bus powerup failed\n");
4388                 goto out;
4389         }
4390         /* Get the PHY type. */
4391         if (dev->dev->id.revision >= 5) {
4392                 u32 tmshigh;
4393
4394                 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
4395                 have_2ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY);
4396                 have_5ghz_phy = !!(tmshigh & B43_TMSHIGH_HAVE_5GHZ_PHY);
4397         } else
4398                 B43_WARN_ON(1);
4399
4400         dev->phy.gmode = have_2ghz_phy;
4401         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4402         b43_wireless_core_reset(dev, tmp);
4403
4404         err = b43_phy_versioning(dev);
4405         if (err)
4406                 goto err_powerdown;
4407         /* Check if this device supports multiband. */
4408         if (!pdev ||
4409             (pdev->device != 0x4312 &&
4410              pdev->device != 0x4319 && pdev->device != 0x4324)) {
4411                 /* No multiband support. */
4412                 have_2ghz_phy = 0;
4413                 have_5ghz_phy = 0;
4414                 switch (dev->phy.type) {
4415                 case B43_PHYTYPE_A:
4416                         have_5ghz_phy = 1;
4417                         break;
4418                 case B43_PHYTYPE_G:
4419                 case B43_PHYTYPE_N:
4420                 case B43_PHYTYPE_LP:
4421                         have_2ghz_phy = 1;
4422                         break;
4423                 default:
4424                         B43_WARN_ON(1);
4425                 }
4426         }
4427         if (dev->phy.type == B43_PHYTYPE_A) {
4428                 /* FIXME */
4429                 b43err(wl, "IEEE 802.11a devices are unsupported\n");
4430                 err = -EOPNOTSUPP;
4431                 goto err_powerdown;
4432         }
4433         if (1 /* disable A-PHY */) {
4434                 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
4435                 if (dev->phy.type != B43_PHYTYPE_N) {
4436                         have_2ghz_phy = 1;
4437                         have_5ghz_phy = 0;
4438                 }
4439         }
4440
4441         err = b43_phy_allocate(dev);
4442         if (err)
4443                 goto err_powerdown;
4444
4445         dev->phy.gmode = have_2ghz_phy;
4446         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
4447         b43_wireless_core_reset(dev, tmp);
4448
4449         err = b43_validate_chipaccess(dev);
4450         if (err)
4451                 goto err_phy_free;
4452         err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
4453         if (err)
4454                 goto err_phy_free;
4455
4456         /* Now set some default "current_dev" */
4457         if (!wl->current_dev)
4458                 wl->current_dev = dev;
4459         INIT_WORK(&dev->restart_work, b43_chip_reset);
4460
4461         dev->phy.ops->switch_analog(dev, 0);
4462         ssb_device_disable(dev->dev, 0);
4463         ssb_bus_may_powerdown(bus);
4464
4465 out:
4466         return err;
4467
4468 err_phy_free:
4469         b43_phy_free(dev);
4470 err_powerdown:
4471         ssb_bus_may_powerdown(bus);
4472         return err;
4473 }
4474
4475 static void b43_one_core_detach(struct ssb_device *dev)
4476 {
4477         struct b43_wldev *wldev;
4478         struct b43_wl *wl;
4479
4480         /* Do not cancel ieee80211-workqueue based work here.
4481          * See comment in b43_remove(). */
4482
4483         wldev = ssb_get_drvdata(dev);
4484         wl = wldev->wl;
4485         b43_debugfs_remove_device(wldev);
4486         b43_wireless_core_detach(wldev);
4487         list_del(&wldev->list);
4488         wl->nr_devs--;
4489         ssb_set_drvdata(dev, NULL);
4490         kfree(wldev);
4491 }
4492
4493 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
4494 {
4495         struct b43_wldev *wldev;
4496         struct pci_dev *pdev;
4497         int err = -ENOMEM;
4498
4499         if (!list_empty(&wl->devlist)) {
4500                 /* We are not the first core on this chip. */
4501                 pdev = dev->bus->host_pci;
4502                 /* Only special chips support more than one wireless
4503                  * core, although some of the other chips have more than
4504                  * one wireless core as well. Check for this and
4505                  * bail out early.
4506                  */
4507                 if (!pdev ||
4508                     ((pdev->device != 0x4321) &&
4509                      (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
4510                         b43dbg(wl, "Ignoring unconnected 802.11 core\n");
4511                         return -ENODEV;
4512                 }
4513         }
4514
4515         wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
4516         if (!wldev)
4517                 goto out;
4518
4519         wldev->dev = dev;
4520         wldev->wl = wl;
4521         b43_set_status(wldev, B43_STAT_UNINIT);
4522         wldev->bad_frames_preempt = modparam_bad_frames_preempt;
4523         tasklet_init(&wldev->isr_tasklet,
4524                      (void (*)(unsigned long))b43_interrupt_tasklet,
4525                      (unsigned long)wldev);
4526         INIT_LIST_HEAD(&wldev->list);
4527
4528         err = b43_wireless_core_attach(wldev);
4529         if (err)
4530                 goto err_kfree_wldev;
4531
4532         list_add(&wldev->list, &wl->devlist);
4533         wl->nr_devs++;
4534         ssb_set_drvdata(dev, wldev);
4535         b43_debugfs_add_device(wldev);
4536
4537       out:
4538         return err;
4539
4540       err_kfree_wldev:
4541         kfree(wldev);
4542         return err;
4543 }
4544
4545 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice)         ( \
4546         (pdev->vendor == PCI_VENDOR_ID_##_vendor) &&                    \
4547         (pdev->device == _device) &&                                    \
4548         (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) &&       \
4549         (pdev->subsystem_device == _subdevice)                          )
4550
4551 static void b43_sprom_fixup(struct ssb_bus *bus)
4552 {
4553         struct pci_dev *pdev;
4554
4555         /* boardflags workarounds */
4556         if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
4557             bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
4558                 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
4559         if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
4560             bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
4561                 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
4562         if (bus->bustype == SSB_BUSTYPE_PCI) {
4563                 pdev = bus->host_pci;
4564                 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
4565                     IS_PDEV(pdev, BROADCOM, 0x4320,    DELL, 0x0003) ||
4566                     IS_PDEV(pdev, BROADCOM, 0x4320,      HP, 0x12f8) ||
4567                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
4568                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
4569                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
4570                     IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
4571                         bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
4572         }
4573 }
4574
4575 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
4576 {
4577         struct ieee80211_hw *hw = wl->hw;
4578
4579         ssb_set_devtypedata(dev, NULL);
4580         ieee80211_free_hw(hw);
4581 }
4582
4583 static int b43_wireless_init(struct ssb_device *dev)
4584 {
4585         struct ssb_sprom *sprom = &dev->bus->sprom;
4586         struct ieee80211_hw *hw;
4587         struct b43_wl *wl;
4588         int err = -ENOMEM;
4589
4590         b43_sprom_fixup(dev->bus);
4591
4592         hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
4593         if (!hw) {
4594                 b43err(NULL, "Could not allocate ieee80211 device\n");
4595                 goto out;
4596         }
4597
4598         /* fill hw info */
4599         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
4600                     IEEE80211_HW_SIGNAL_DBM |
4601                     IEEE80211_HW_NOISE_DBM;
4602
4603         hw->wiphy->interface_modes =
4604                 BIT(NL80211_IFTYPE_AP) |
4605                 BIT(NL80211_IFTYPE_MESH_POINT) |
4606                 BIT(NL80211_IFTYPE_STATION) |
4607                 BIT(NL80211_IFTYPE_WDS) |
4608                 BIT(NL80211_IFTYPE_ADHOC);
4609
4610         hw->queues = b43_modparam_qos ? 4 : 1;
4611         hw->max_rates = 2;
4612         SET_IEEE80211_DEV(hw, dev->dev);
4613         if (is_valid_ether_addr(sprom->et1mac))
4614                 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
4615         else
4616                 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
4617
4618         /* Get and initialize struct b43_wl */
4619         wl = hw_to_b43_wl(hw);
4620         memset(wl, 0, sizeof(*wl));
4621         wl->hw = hw;
4622         spin_lock_init(&wl->irq_lock);
4623         rwlock_init(&wl->tx_lock);
4624         spin_lock_init(&wl->leds_lock);
4625         spin_lock_init(&wl->shm_lock);
4626         mutex_init(&wl->mutex);
4627         INIT_LIST_HEAD(&wl->devlist);
4628         INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
4629         INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
4630
4631         ssb_set_devtypedata(dev, wl);
4632         b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
4633         err = 0;
4634       out:
4635         return err;
4636 }
4637
4638 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
4639 {
4640         struct b43_wl *wl;
4641         int err;
4642         int first = 0;
4643
4644         wl = ssb_get_devtypedata(dev);
4645         if (!wl) {
4646                 /* Probing the first core. Must setup common struct b43_wl */
4647                 first = 1;
4648                 err = b43_wireless_init(dev);
4649                 if (err)
4650                         goto out;
4651                 wl = ssb_get_devtypedata(dev);
4652                 B43_WARN_ON(!wl);
4653         }
4654         err = b43_one_core_attach(dev, wl);
4655         if (err)
4656                 goto err_wireless_exit;
4657
4658         if (first) {
4659                 err = ieee80211_register_hw(wl->hw);
4660                 if (err)
4661                         goto err_one_core_detach;
4662         }
4663
4664       out:
4665         return err;
4666
4667       err_one_core_detach:
4668         b43_one_core_detach(dev);
4669       err_wireless_exit:
4670         if (first)
4671                 b43_wireless_exit(dev, wl);
4672         return err;
4673 }
4674
4675 static void b43_remove(struct ssb_device *dev)
4676 {
4677         struct b43_wl *wl = ssb_get_devtypedata(dev);
4678         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4679
4680         /* We must cancel any work here before unregistering from ieee80211,
4681          * as the ieee80211 unreg will destroy the workqueue. */
4682         cancel_work_sync(&wldev->restart_work);
4683
4684         B43_WARN_ON(!wl);
4685         if (wl->current_dev == wldev)
4686                 ieee80211_unregister_hw(wl->hw);
4687
4688         b43_one_core_detach(dev);
4689
4690         if (list_empty(&wl->devlist)) {
4691                 /* Last core on the chip unregistered.
4692                  * We can destroy common struct b43_wl.
4693                  */
4694                 b43_wireless_exit(dev, wl);
4695         }
4696 }
4697
4698 /* Perform a hardware reset. This can be called from any context. */
4699 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
4700 {
4701         /* Must avoid requeueing, if we are in shutdown. */
4702         if (b43_status(dev) < B43_STAT_INITIALIZED)
4703                 return;
4704         b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
4705         queue_work(dev->wl->hw->workqueue, &dev->restart_work);
4706 }
4707
4708 #ifdef CONFIG_PM
4709
4710 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
4711 {
4712         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4713         struct b43_wl *wl = wldev->wl;
4714
4715         b43dbg(wl, "Suspending...\n");
4716
4717         mutex_lock(&wl->mutex);
4718         wldev->suspend_in_progress = true;
4719         wldev->suspend_init_status = b43_status(wldev);
4720         if (wldev->suspend_init_status >= B43_STAT_STARTED)
4721                 b43_wireless_core_stop(wldev);
4722         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
4723                 b43_wireless_core_exit(wldev);
4724         mutex_unlock(&wl->mutex);
4725
4726         b43dbg(wl, "Device suspended.\n");
4727
4728         return 0;
4729 }
4730
4731 static int b43_resume(struct ssb_device *dev)
4732 {
4733         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4734         struct b43_wl *wl = wldev->wl;
4735         int err = 0;
4736
4737         b43dbg(wl, "Resuming...\n");
4738
4739         mutex_lock(&wl->mutex);
4740         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4741                 err = b43_wireless_core_init(wldev);
4742                 if (err) {
4743                         b43err(wl, "Resume failed at core init\n");
4744                         goto out;
4745                 }
4746         }
4747         if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4748                 err = b43_wireless_core_start(wldev);
4749                 if (err) {
4750                         b43_leds_exit(wldev);
4751                         b43_rng_exit(wldev->wl);
4752                         b43_wireless_core_exit(wldev);
4753                         b43err(wl, "Resume failed at core start\n");
4754                         goto out;
4755                 }
4756         }
4757         b43dbg(wl, "Device resumed.\n");
4758  out:
4759         wldev->suspend_in_progress = false;
4760         mutex_unlock(&wl->mutex);
4761         return err;
4762 }
4763
4764 #else /* CONFIG_PM */
4765 # define b43_suspend    NULL
4766 # define b43_resume     NULL
4767 #endif /* CONFIG_PM */
4768
4769 static struct ssb_driver b43_ssb_driver = {
4770         .name           = KBUILD_MODNAME,
4771         .id_table       = b43_ssb_tbl,
4772         .probe          = b43_probe,
4773         .remove         = b43_remove,
4774         .suspend        = b43_suspend,
4775         .resume         = b43_resume,
4776 };
4777
4778 static void b43_print_driverinfo(void)
4779 {
4780         const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
4781                    *feat_leds = "", *feat_rfkill = "";
4782
4783 #ifdef CONFIG_B43_PCI_AUTOSELECT
4784         feat_pci = "P";
4785 #endif
4786 #ifdef CONFIG_B43_PCMCIA
4787         feat_pcmcia = "M";
4788 #endif
4789 #ifdef CONFIG_B43_NPHY
4790         feat_nphy = "N";
4791 #endif
4792 #ifdef CONFIG_B43_LEDS
4793         feat_leds = "L";
4794 #endif
4795 #ifdef CONFIG_B43_RFKILL
4796         feat_rfkill = "R";
4797 #endif
4798         printk(KERN_INFO "Broadcom 43xx driver loaded "
4799                "[ Features: %s%s%s%s%s, Firmware-ID: "
4800                B43_SUPPORTED_FIRMWARE_ID " ]\n",
4801                feat_pci, feat_pcmcia, feat_nphy,
4802                feat_leds, feat_rfkill);
4803 }
4804
4805 static int __init b43_init(void)
4806 {
4807         int err;
4808
4809         b43_debugfs_init();
4810         err = b43_pcmcia_init();
4811         if (err)
4812                 goto err_dfs_exit;
4813         err = ssb_driver_register(&b43_ssb_driver);
4814         if (err)
4815                 goto err_pcmcia_exit;
4816         b43_print_driverinfo();
4817
4818         return err;
4819
4820 err_pcmcia_exit:
4821         b43_pcmcia_exit();
4822 err_dfs_exit:
4823         b43_debugfs_exit();
4824         return err;
4825 }
4826
4827 static void __exit b43_exit(void)
4828 {
4829         ssb_driver_unregister(&b43_ssb_driver);
4830         b43_pcmcia_exit();
4831         b43_debugfs_exit();
4832 }
4833
4834 module_init(b43_init)
4835 module_exit(b43_exit)