drivers/net/wireless/b43/main.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
   6   Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
   7   Copyright (c) 2005-2009 Michael Buesch <m@bues.ch>
   8   Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
   9   Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
  10   Copyright (c) 2010-2011 Rafał Miłecki <zajec5@gmail.com>
  11
  12   SDIO support
  13   Copyright (c) 2009 Albert Herranz <albert_herranz@yahoo.es>
  14
  15   Some parts of the code in this file are derived from the ipw2200
  16   driver  Copyright(c) 2003 - 2004 Intel Corporation.
  17
  18   This program is free software; you can redistribute it and/or modify
  19   it under the terms of the GNU General Public License as published by
  20   the Free Software Foundation; either version 2 of the License, or
  21   (at your option) any later version.
  22
  23   This program is distributed in the hope that it will be useful,
  24   but WITHOUT ANY WARRANTY; without even the implied warranty of
  25   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26   GNU General Public License for more details.
  27
  28   You should have received a copy of the GNU General Public License
  29   along with this program; see the file COPYING.  If not, write to
  30   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  31   Boston, MA 02110-1301, USA.
  32
  33 */
  34
  35 #include <linux/delay.h>
  36 #include <linux/init.h>
  37 #include <linux/module.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/firmware.h>
  41 #include <linux/workqueue.h>
  42 #include <linux/skbuff.h>
  43 #include <linux/io.h>
  44 #include <linux/dma-mapping.h>
  45 #include <linux/slab.h>
  46 #include <asm/unaligned.h>
  47
  48 #include "b43.h"
  49 #include "main.h"
  50 #include "debugfs.h"
  51 #include "phy_common.h"
  52 #include "phy_g.h"
  53 #include "phy_n.h"
  54 #include "dma.h"
  55 #include "pio.h"
  56 #include "sysfs.h"
  57 #include "xmit.h"
  58 #include "lo.h"
  59 #include "pcmcia.h"
  60 #include "sdio.h"
  61 #include <linux/mmc/sdio_func.h>
  62
  63 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
  64 MODULE_AUTHOR("Martin Langer");
  65 MODULE_AUTHOR("Stefano Brivio");
  66 MODULE_AUTHOR("Michael Buesch");
  67 MODULE_AUTHOR("Gábor Stefanik");
  68 MODULE_AUTHOR("Rafał Miłecki");
  69 MODULE_LICENSE("GPL");
  70
  71 MODULE_FIRMWARE("b43/ucode11.fw");
  72 MODULE_FIRMWARE("b43/ucode13.fw");
  73 MODULE_FIRMWARE("b43/ucode14.fw");
  74 MODULE_FIRMWARE("b43/ucode15.fw");
  75 MODULE_FIRMWARE("b43/ucode16_mimo.fw");
  76 MODULE_FIRMWARE("b43/ucode5.fw");
  77 MODULE_FIRMWARE("b43/ucode9.fw");
  78
  79 static int modparam_bad_frames_preempt;
  80 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
  81 MODULE_PARM_DESC(bad_frames_preempt,
  82                  "enable(1) / disable(0) Bad Frames Preemption");
  83
  84 static char modparam_fwpostfix[16];
  85 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
  86 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
  87
  88 static int modparam_hwpctl;
  89 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
  90 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
  91
  92 static int modparam_nohwcrypt;
  93 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
  94 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  95
  96 static int modparam_hwtkip;
  97 module_param_named(hwtkip, modparam_hwtkip, int, 0444);
  98 MODULE_PARM_DESC(hwtkip, "Enable hardware tkip.");
  99
 100 static int modparam_qos = 1;
 101 module_param_named(qos, modparam_qos, int, 0444);
 102 MODULE_PARM_DESC(qos, "Enable QOS support (default on)");
 103
 104 static int modparam_btcoex = 1;
 105 module_param_named(btcoex, modparam_btcoex, int, 0444);
 106 MODULE_PARM_DESC(btcoex, "Enable Bluetooth coexistence (default on)");
 107
 108 int b43_modparam_verbose = B43_VERBOSITY_DEFAULT;
 109 module_param_named(verbose, b43_modparam_verbose, int, 0644);
 110 MODULE_PARM_DESC(verbose, "Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug");
 111
 112 static int b43_modparam_pio = 0;
 113 module_param_named(pio, b43_modparam_pio, int, 0644);
 114 MODULE_PARM_DESC(pio, "Use PIO accesses by default: 0=DMA, 1=PIO");
 115
 116 #ifdef CONFIG_B43_BCMA
 117 static const struct bcma_device_id b43_bcma_tbl[] = {
 118         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x11, BCMA_ANY_CLASS),
 119 #ifdef CONFIG_B43_BCMA_EXTRA
 120         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x17, BCMA_ANY_CLASS),
 121         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x18, BCMA_ANY_CLASS),
 122 #endif
 123         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 0x1D, BCMA_ANY_CLASS),
 124         BCMA_CORETABLE_END
 125 };
 126 MODULE_DEVICE_TABLE(bcma, b43_bcma_tbl);
 127 #endif
 128
 129 #ifdef CONFIG_B43_SSB
 130 static const struct ssb_device_id b43_ssb_tbl[] = {
 131         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
 132         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
 133         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
 134         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
 135         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
 136         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 11),
 137         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 12),
 138         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
 139         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 15),
 140         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 16),
 141         SSB_DEVTABLE_END
 142 };
 143 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
 144 #endif
 145
 146 /* Channel and ratetables are shared for all devices.
 147  * They can't be const, because ieee80211 puts some precalculated
 148  * data in there. This data is the same for all devices, so we don't
 149  * get concurrency issues */
 150 #define RATETAB_ENT(_rateid, _flags) \
 151         {                                                               \
 152                 .bitrate        = B43_RATE_TO_BASE100KBPS(_rateid),     \
 153                 .hw_value       = (_rateid),                            \
 154                 .flags          = (_flags),                             \
 155         }
 156
 157 /*
 158  * NOTE: When changing this, sync with xmit.c's
 159  *       b43_plcp_get_bitrate_idx_* functions!
 160  */
 161 static struct ieee80211_rate __b43_ratetable[] = {
 162         RATETAB_ENT(B43_CCK_RATE_1MB, 0),
 163         RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE),
 164         RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE),
 165         RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE),
 166         RATETAB_ENT(B43_OFDM_RATE_6MB, 0),
 167         RATETAB_ENT(B43_OFDM_RATE_9MB, 0),
 168         RATETAB_ENT(B43_OFDM_RATE_12MB, 0),
 169         RATETAB_ENT(B43_OFDM_RATE_18MB, 0),
 170         RATETAB_ENT(B43_OFDM_RATE_24MB, 0),
 171         RATETAB_ENT(B43_OFDM_RATE_36MB, 0),
 172         RATETAB_ENT(B43_OFDM_RATE_48MB, 0),
 173         RATETAB_ENT(B43_OFDM_RATE_54MB, 0),
 174 };
 175
 176 #define b43_a_ratetable         (__b43_ratetable + 4)
 177 #define b43_a_ratetable_size    8
 178 #define b43_b_ratetable         (__b43_ratetable + 0)
 179 #define b43_b_ratetable_size    4
 180 #define b43_g_ratetable         (__b43_ratetable + 0)
 181 #define b43_g_ratetable_size    12
 182
 183 #define CHAN4G(_channel, _freq, _flags) {                       \
 184         .band                   = IEEE80211_BAND_2GHZ,          \
 185         .center_freq            = (_freq),                      \
 186         .hw_value               = (_channel),                   \
 187         .flags                  = (_flags),                     \
 188         .max_antenna_gain       = 0,                            \
 189         .max_power              = 30,                           \
 190 }
 191 static struct ieee80211_channel b43_2ghz_chantable[] = {
 192         CHAN4G(1, 2412, 0),
 193         CHAN4G(2, 2417, 0),
 194         CHAN4G(3, 2422, 0),
 195         CHAN4G(4, 2427, 0),
 196         CHAN4G(5, 2432, 0),
 197         CHAN4G(6, 2437, 0),
 198         CHAN4G(7, 2442, 0),
 199         CHAN4G(8, 2447, 0),
 200         CHAN4G(9, 2452, 0),
 201         CHAN4G(10, 2457, 0),
 202         CHAN4G(11, 2462, 0),
 203         CHAN4G(12, 2467, 0),
 204         CHAN4G(13, 2472, 0),
 205         CHAN4G(14, 2484, 0),
 206 };
 207 #undef CHAN4G
 208
 209 #define CHAN5G(_channel, _flags) {                              \
 210         .band                   = IEEE80211_BAND_5GHZ,          \
 211         .center_freq            = 5000 + (5 * (_channel)),      \
 212         .hw_value               = (_channel),                   \
 213         .flags                  = (_flags),                     \
 214         .max_antenna_gain       = 0,                            \
 215         .max_power              = 30,                           \
 216 }
 217 static struct ieee80211_channel b43_5ghz_nphy_chantable[] = {
 218         CHAN5G(32, 0),          CHAN5G(34, 0),
 219         CHAN5G(36, 0),          CHAN5G(38, 0),
 220         CHAN5G(40, 0),          CHAN5G(42, 0),
 221         CHAN5G(44, 0),          CHAN5G(46, 0),
 222         CHAN5G(48, 0),          CHAN5G(50, 0),
 223         CHAN5G(52, 0),          CHAN5G(54, 0),
 224         CHAN5G(56, 0),          CHAN5G(58, 0),
 225         CHAN5G(60, 0),          CHAN5G(62, 0),
 226         CHAN5G(64, 0),          CHAN5G(66, 0),
 227         CHAN5G(68, 0),          CHAN5G(70, 0),
 228         CHAN5G(72, 0),          CHAN5G(74, 0),
 229         CHAN5G(76, 0),          CHAN5G(78, 0),
 230         CHAN5G(80, 0),          CHAN5G(82, 0),
 231         CHAN5G(84, 0),          CHAN5G(86, 0),
 232         CHAN5G(88, 0),          CHAN5G(90, 0),
 233         CHAN5G(92, 0),          CHAN5G(94, 0),
 234         CHAN5G(96, 0),          CHAN5G(98, 0),
 235         CHAN5G(100, 0),         CHAN5G(102, 0),
 236         CHAN5G(104, 0),         CHAN5G(106, 0),
 237         CHAN5G(108, 0),         CHAN5G(110, 0),
 238         CHAN5G(112, 0),         CHAN5G(114, 0),
 239         CHAN5G(116, 0),         CHAN5G(118, 0),
 240         CHAN5G(120, 0),         CHAN5G(122, 0),
 241         CHAN5G(124, 0),         CHAN5G(126, 0),
 242         CHAN5G(128, 0),         CHAN5G(130, 0),
 243         CHAN5G(132, 0),         CHAN5G(134, 0),
 244         CHAN5G(136, 0),         CHAN5G(138, 0),
 245         CHAN5G(140, 0),         CHAN5G(142, 0),
 246         CHAN5G(144, 0),         CHAN5G(145, 0),
 247         CHAN5G(146, 0),         CHAN5G(147, 0),
 248         CHAN5G(148, 0),         CHAN5G(149, 0),
 249         CHAN5G(150, 0),         CHAN5G(151, 0),
 250         CHAN5G(152, 0),         CHAN5G(153, 0),
 251         CHAN5G(154, 0),         CHAN5G(155, 0),
 252         CHAN5G(156, 0),         CHAN5G(157, 0),
 253         CHAN5G(158, 0),         CHAN5G(159, 0),
 254         CHAN5G(160, 0),         CHAN5G(161, 0),
 255         CHAN5G(162, 0),         CHAN5G(163, 0),
 256         CHAN5G(164, 0),         CHAN5G(165, 0),
 257         CHAN5G(166, 0),         CHAN5G(168, 0),
 258         CHAN5G(170, 0),         CHAN5G(172, 0),
 259         CHAN5G(174, 0),         CHAN5G(176, 0),
 260         CHAN5G(178, 0),         CHAN5G(180, 0),
 261         CHAN5G(182, 0),         CHAN5G(184, 0),
 262         CHAN5G(186, 0),         CHAN5G(188, 0),
 263         CHAN5G(190, 0),         CHAN5G(192, 0),
 264         CHAN5G(194, 0),         CHAN5G(196, 0),
 265         CHAN5G(198, 0),         CHAN5G(200, 0),
 266         CHAN5G(202, 0),         CHAN5G(204, 0),
 267         CHAN5G(206, 0),         CHAN5G(208, 0),
 268         CHAN5G(210, 0),         CHAN5G(212, 0),
 269         CHAN5G(214, 0),         CHAN5G(216, 0),
 270         CHAN5G(218, 0),         CHAN5G(220, 0),
 271         CHAN5G(222, 0),         CHAN5G(224, 0),
 272         CHAN5G(226, 0),         CHAN5G(228, 0),
 273 };
 274
 275 static struct ieee80211_channel b43_5ghz_aphy_chantable[] = {
 276         CHAN5G(34, 0),          CHAN5G(36, 0),
 277         CHAN5G(38, 0),          CHAN5G(40, 0),
 278         CHAN5G(42, 0),          CHAN5G(44, 0),
 279         CHAN5G(46, 0),          CHAN5G(48, 0),
 280         CHAN5G(52, 0),          CHAN5G(56, 0),
 281         CHAN5G(60, 0),          CHAN5G(64, 0),
 282         CHAN5G(100, 0),         CHAN5G(104, 0),
 283         CHAN5G(108, 0),         CHAN5G(112, 0),
 284         CHAN5G(116, 0),         CHAN5G(120, 0),
 285         CHAN5G(124, 0),         CHAN5G(128, 0),
 286         CHAN5G(132, 0),         CHAN5G(136, 0),
 287         CHAN5G(140, 0),         CHAN5G(149, 0),
 288         CHAN5G(153, 0),         CHAN5G(157, 0),
 289         CHAN5G(161, 0),         CHAN5G(165, 0),
 290         CHAN5G(184, 0),         CHAN5G(188, 0),
 291         CHAN5G(192, 0),         CHAN5G(196, 0),
 292         CHAN5G(200, 0),         CHAN5G(204, 0),
 293         CHAN5G(208, 0),         CHAN5G(212, 0),
 294         CHAN5G(216, 0),
 295 };
 296 #undef CHAN5G
 297
 298 static struct ieee80211_supported_band b43_band_5GHz_nphy = {
 299         .band           = IEEE80211_BAND_5GHZ,
 300         .channels       = b43_5ghz_nphy_chantable,
 301         .n_channels     = ARRAY_SIZE(b43_5ghz_nphy_chantable),
 302         .bitrates       = b43_a_ratetable,
 303         .n_bitrates     = b43_a_ratetable_size,
 304 };
 305
 306 static struct ieee80211_supported_band b43_band_5GHz_aphy = {
 307         .band           = IEEE80211_BAND_5GHZ,
 308         .channels       = b43_5ghz_aphy_chantable,
 309         .n_channels     = ARRAY_SIZE(b43_5ghz_aphy_chantable),
 310         .bitrates       = b43_a_ratetable,
 311         .n_bitrates     = b43_a_ratetable_size,
 312 };
 313
 314 static struct ieee80211_supported_band b43_band_2GHz = {
 315         .band           = IEEE80211_BAND_2GHZ,
 316         .channels       = b43_2ghz_chantable,
 317         .n_channels     = ARRAY_SIZE(b43_2ghz_chantable),
 318         .bitrates       = b43_g_ratetable,
 319         .n_bitrates     = b43_g_ratetable_size,
 320 };
 321
 322 static void b43_wireless_core_exit(struct b43_wldev *dev);
 323 static int b43_wireless_core_init(struct b43_wldev *dev);
 324 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev);
 325 static int b43_wireless_core_start(struct b43_wldev *dev);
 326 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
 327                                     struct ieee80211_vif *vif,
 328                                     struct ieee80211_bss_conf *conf,
 329                                     u32 changed);
 330
 331 static int b43_ratelimit(struct b43_wl *wl)
 332 {
 333         if (!wl || !wl->current_dev)
 334                 return 1;
 335         if (b43_status(wl->current_dev) < B43_STAT_STARTED)
 336                 return 1;
 337         /* We are up and running.
 338          * Ratelimit the messages to avoid DoS over the net. */
 339         return net_ratelimit();
 340 }
 341
 342 void b43info(struct b43_wl *wl, const char *fmt, ...)
 343 {
 344         struct va_format vaf;
 345         va_list args;
 346
 347         if (b43_modparam_verbose < B43_VERBOSITY_INFO)
 348                 return;
 349         if (!b43_ratelimit(wl))
 350                 return;
 351
 352         va_start(args, fmt);
 353
 354         vaf.fmt = fmt;
 355         vaf.va = &args;
 356
 357         printk(KERN_INFO "b43-%s: %pV",
 358                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
 359
 360         va_end(args);
 361 }
 362
 363 void b43err(struct b43_wl *wl, const char *fmt, ...)
 364 {
 365         struct va_format vaf;
 366         va_list args;
 367
 368         if (b43_modparam_verbose < B43_VERBOSITY_ERROR)
 369                 return;
 370         if (!b43_ratelimit(wl))
 371                 return;
 372
 373         va_start(args, fmt);
 374
 375         vaf.fmt = fmt;
 376         vaf.va = &args;
 377
 378         printk(KERN_ERR "b43-%s ERROR: %pV",
 379                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
 380
 381         va_end(args);
 382 }
 383
 384 void b43warn(struct b43_wl *wl, const char *fmt, ...)
 385 {
 386         struct va_format vaf;
 387         va_list args;
 388
 389         if (b43_modparam_verbose < B43_VERBOSITY_WARN)
 390                 return;
 391         if (!b43_ratelimit(wl))
 392                 return;
 393
 394         va_start(args, fmt);
 395
 396         vaf.fmt = fmt;
 397         vaf.va = &args;
 398
 399         printk(KERN_WARNING "b43-%s warning: %pV",
 400                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
 401
 402         va_end(args);
 403 }
 404
 405 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
 406 {
 407         struct va_format vaf;
 408         va_list args;
 409
 410         if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
 411                 return;
 412
 413         va_start(args, fmt);
 414
 415         vaf.fmt = fmt;
 416         vaf.va = &args;
 417
 418         printk(KERN_DEBUG "b43-%s debug: %pV",
 419                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf);
 420
 421         va_end(args);
 422 }
 423
 424 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
 425 {
 426         u32 macctl;
 427
 428         B43_WARN_ON(offset % 4 != 0);
 429
 430         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 431         if (macctl & B43_MACCTL_BE)
 432                 val = swab32(val);
 433
 434         b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
 435         mmiowb();
 436         b43_write32(dev, B43_MMIO_RAM_DATA, val);
 437 }
 438
 439 static inline void b43_shm_control_word(struct b43_wldev *dev,
 440                                         u16 routing, u16 offset)
 441 {
 442         u32 control;
 443
 444         /* "offset" is the WORD offset. */
 445         control = routing;
 446         control <<= 16;
 447         control |= offset;
 448         b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
 449 }
 450
 451 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 452 {
 453         u32 ret;
 454
 455         if (routing == B43_SHM_SHARED) {
 456                 B43_WARN_ON(offset & 0x0001);
 457                 if (offset & 0x0003) {
 458                         /* Unaligned access */
 459                         b43_shm_control_word(dev, routing, offset >> 2);
 460                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 461                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 462                         ret |= ((u32)b43_read16(dev, B43_MMIO_SHM_DATA)) << 16;
 463
 464                         goto out;
 465                 }
 466                 offset >>= 2;
 467         }
 468         b43_shm_control_word(dev, routing, offset);
 469         ret = b43_read32(dev, B43_MMIO_SHM_DATA);
 470 out:
 471         return ret;
 472 }
 473
 474 u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
 475 {
 476         u16 ret;
 477
 478         if (routing == B43_SHM_SHARED) {
 479                 B43_WARN_ON(offset & 0x0001);
 480                 if (offset & 0x0003) {
 481                         /* Unaligned access */
 482                         b43_shm_control_word(dev, routing, offset >> 2);
 483                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 484
 485                         goto out;
 486                 }
 487                 offset >>= 2;
 488         }
 489         b43_shm_control_word(dev, routing, offset);
 490         ret = b43_read16(dev, B43_MMIO_SHM_DATA);
 491 out:
 492         return ret;
 493 }
 494
 495 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 496 {
 497         if (routing == B43_SHM_SHARED) {
 498                 B43_WARN_ON(offset & 0x0001);
 499                 if (offset & 0x0003) {
 500                         /* Unaligned access */
 501                         b43_shm_control_word(dev, routing, offset >> 2);
 502                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
 503                                     value & 0xFFFF);
 504                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 505                         b43_write16(dev, B43_MMIO_SHM_DATA,
 506                                     (value >> 16) & 0xFFFF);
 507                         return;
 508                 }
 509                 offset >>= 2;
 510         }
 511         b43_shm_control_word(dev, routing, offset);
 512         b43_write32(dev, B43_MMIO_SHM_DATA, value);
 513 }
 514
 515 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 516 {
 517         if (routing == B43_SHM_SHARED) {
 518                 B43_WARN_ON(offset & 0x0001);
 519                 if (offset & 0x0003) {
 520                         /* Unaligned access */
 521                         b43_shm_control_word(dev, routing, offset >> 2);
 522                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
 523                         return;
 524                 }
 525                 offset >>= 2;
 526         }
 527         b43_shm_control_word(dev, routing, offset);
 528         b43_write16(dev, B43_MMIO_SHM_DATA, value);
 529 }
 530
 531 /* Read HostFlags */
 532 u64 b43_hf_read(struct b43_wldev *dev)
 533 {
 534         u64 ret;
 535
 536         ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3);
 537         ret <<= 16;
 538         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2);
 539         ret <<= 16;
 540         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1);
 541
 542         return ret;
 543 }
 544
 545 /* Write HostFlags */
 546 void b43_hf_write(struct b43_wldev *dev, u64 value)
 547 {
 548         u16 lo, mi, hi;
 549
 550         lo = (value & 0x00000000FFFFULL);
 551         mi = (value & 0x0000FFFF0000ULL) >> 16;
 552         hi = (value & 0xFFFF00000000ULL) >> 32;
 553         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF1, lo);
 554         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF2, mi);
 555         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTF3, hi);
 556 }
 557
 558 /* Read the firmware capabilities bitmask (Opensource firmware only) */
 559 static u16 b43_fwcapa_read(struct b43_wldev *dev)
 560 {
 561         B43_WARN_ON(!dev->fw.opensource);
 562         return b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_FWCAPA);
 563 }
 564
 565 void b43_tsf_read(struct b43_wldev *dev, u64 *tsf)
 566 {
 567         u32 low, high;
 568
 569         B43_WARN_ON(dev->dev->core_rev < 3);
 570
 571         /* The hardware guarantees us an atomic read, if we
 572          * read the low register first. */
 573         low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
 574         high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 575
 576         *tsf = high;
 577         *tsf <<= 32;
 578         *tsf |= low;
 579 }
 580
 581 static void b43_time_lock(struct b43_wldev *dev)
 582 {
 583         b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_TBTTHOLD);
 584         /* Commit the write */
 585         b43_read32(dev, B43_MMIO_MACCTL);
 586 }
 587
 588 static void b43_time_unlock(struct b43_wldev *dev)
 589 {
 590         b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_TBTTHOLD, 0);
 591         /* Commit the write */
 592         b43_read32(dev, B43_MMIO_MACCTL);
 593 }
 594
 595 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
 596 {
 597         u32 low, high;
 598
 599         B43_WARN_ON(dev->dev->core_rev < 3);
 600
 601         low = tsf;
 602         high = (tsf >> 32);
 603         /* The hardware guarantees us an atomic write, if we
 604          * write the low register first. */
 605         b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
 606         mmiowb();
 607         b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
 608         mmiowb();
 609 }
 610
 611 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
 612 {
 613         b43_time_lock(dev);
 614         b43_tsf_write_locked(dev, tsf);
 615         b43_time_unlock(dev);
 616 }
 617
 618 static
 619 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 *mac)
 620 {
 621         static const u8 zero_addr[ETH_ALEN] = { 0 };
 622         u16 data;
 623
 624         if (!mac)
 625                 mac = zero_addr;
 626
 627         offset |= 0x0020;
 628         b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
 629
 630         data = mac[0];
 631         data |= mac[1] << 8;
 632         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 633         data = mac[2];
 634         data |= mac[3] << 8;
 635         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 636         data = mac[4];
 637         data |= mac[5] << 8;
 638         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 639 }
 640
 641 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
 642 {
 643         const u8 *mac;
 644         const u8 *bssid;
 645         u8 mac_bssid[ETH_ALEN * 2];
 646         int i;
 647         u32 tmp;
 648
 649         bssid = dev->wl->bssid;
 650         mac = dev->wl->mac_addr;
 651
 652         b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
 653
 654         memcpy(mac_bssid, mac, ETH_ALEN);
 655         memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
 656
 657         /* Write our MAC address and BSSID to template ram */
 658         for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
 659                 tmp = (u32) (mac_bssid[i + 0]);
 660                 tmp |= (u32) (mac_bssid[i + 1]) << 8;
 661                 tmp |= (u32) (mac_bssid[i + 2]) << 16;
 662                 tmp |= (u32) (mac_bssid[i + 3]) << 24;
 663                 b43_ram_write(dev, 0x20 + i, tmp);
 664         }
 665 }
 666
 667 static void b43_upload_card_macaddress(struct b43_wldev *dev)
 668 {
 669         b43_write_mac_bssid_templates(dev);
 670         b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
 671 }
 672
 673 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
 674 {
 675         /* slot_time is in usec. */
 676         /* This test used to exit for all but a G PHY. */
 677         if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
 678                 return;
 679         b43_write16(dev, B43_MMIO_IFSSLOT, 510 + slot_time);
 680         /* Shared memory location 0x0010 is the slot time and should be
 681          * set to slot_time; however, this register is initially 0 and changing
 682          * the value adversely affects the transmit rate for BCM4311
 683          * devices. Until this behavior is unterstood, delete this step
 684          *
 685          * b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
 686          */
 687 }
 688
 689 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
 690 {
 691         b43_set_slot_time(dev, 9);
 692 }
 693
 694 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
 695 {
 696         b43_set_slot_time(dev, 20);
 697 }
 698
 699 /* DummyTransmission function, as documented on
 700  * http://bcm-v4.sipsolutions.net/802.11/DummyTransmission
 701  */
 702 void b43_dummy_transmission(struct b43_wldev *dev, bool ofdm, bool pa_on)
 703 {
 704         struct b43_phy *phy = &dev->phy;
 705         unsigned int i, max_loop;
 706         u16 value;
 707         u32 buffer[5] = {
 708                 0x00000000,
 709                 0x00D40000,
 710                 0x00000000,
 711                 0x01000000,
 712                 0x00000000,
 713         };
 714
 715         if (ofdm) {
 716                 max_loop = 0x1E;
 717                 buffer[0] = 0x000201CC;
 718         } else {
 719                 max_loop = 0xFA;
 720                 buffer[0] = 0x000B846E;
 721         }
 722
 723         for (i = 0; i < 5; i++)
 724                 b43_ram_write(dev, i * 4, buffer[i]);
 725
 726         b43_write16(dev, B43_MMIO_XMTSEL, 0x0000);
 727
 728         if (dev->dev->core_rev < 11)
 729                 b43_write16(dev, B43_MMIO_WEPCTL, 0x0000);
 730         else
 731                 b43_write16(dev, B43_MMIO_WEPCTL, 0x0100);
 732
 733         value = (ofdm ? 0x41 : 0x40);
 734         b43_write16(dev, B43_MMIO_TXE0_PHYCTL, value);
 735         if (phy->type == B43_PHYTYPE_N || phy->type == B43_PHYTYPE_LP ||
 736             phy->type == B43_PHYTYPE_LCN)
 737                 b43_write16(dev, B43_MMIO_TXE0_PHYCTL1, 0x1A02);
 738
 739         b43_write16(dev, B43_MMIO_TXE0_WM_0, 0x0000);
 740         b43_write16(dev, B43_MMIO_TXE0_WM_1, 0x0000);
 741
 742         b43_write16(dev, B43_MMIO_XMTTPLATETXPTR, 0x0000);
 743         b43_write16(dev, B43_MMIO_XMTTXCNT, 0x0014);
 744         b43_write16(dev, B43_MMIO_XMTSEL, 0x0826);
 745         b43_write16(dev, B43_MMIO_TXE0_CTL, 0x0000);
 746
 747         if (!pa_on && phy->type == B43_PHYTYPE_N)
 748                 ; /*b43_nphy_pa_override(dev, false) */
 749
 750         switch (phy->type) {
 751         case B43_PHYTYPE_N:
 752         case B43_PHYTYPE_LCN:
 753                 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x00D0);
 754                 break;
 755         case B43_PHYTYPE_LP:
 756                 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0050);
 757                 break;
 758         default:
 759                 b43_write16(dev, B43_MMIO_TXE0_AUX, 0x0030);
 760         }
 761         b43_read16(dev, B43_MMIO_TXE0_AUX);
 762
 763         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 764                 b43_radio_write16(dev, 0x0051, 0x0017);
 765         for (i = 0x00; i < max_loop; i++) {
 766                 value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
 767                 if (value & 0x0080)
 768                         break;
 769                 udelay(10);
 770         }
 771         for (i = 0x00; i < 0x0A; i++) {
 772                 value = b43_read16(dev, B43_MMIO_TXE0_STATUS);
 773                 if (value & 0x0400)
 774                         break;
 775                 udelay(10);
 776         }
 777         for (i = 0x00; i < 0x19; i++) {
 778                 value = b43_read16(dev, B43_MMIO_IFSSTAT);
 779                 if (!(value & 0x0100))
 780                         break;
 781                 udelay(10);
 782         }
 783         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 784                 b43_radio_write16(dev, 0x0051, 0x0037);
 785 }
 786
 787 static void key_write(struct b43_wldev *dev,
 788                       u8 index, u8 algorithm, const u8 *key)
 789 {
 790         unsigned int i;
 791         u32 offset;
 792         u16 value;
 793         u16 kidx;
 794
 795         /* Key index/algo block */
 796         kidx = b43_kidx_to_fw(dev, index);
 797         value = ((kidx << 4) | algorithm);
 798         b43_shm_write16(dev, B43_SHM_SHARED,
 799                         B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
 800
 801         /* Write the key to the Key Table Pointer offset */
 802         offset = dev->ktp + (index * B43_SEC_KEYSIZE);
 803         for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
 804                 value = key[i];
 805                 value |= (u16) (key[i + 1]) << 8;
 806                 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
 807         }
 808 }
 809
 810 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 *addr)
 811 {
 812         u32 addrtmp[2] = { 0, 0, };
 813         u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
 814
 815         if (b43_new_kidx_api(dev))
 816                 pairwise_keys_start = B43_NR_GROUP_KEYS;
 817
 818         B43_WARN_ON(index < pairwise_keys_start);
 819         /* We have four default TX keys and possibly four default RX keys.
 820          * Physical mac 0 is mapped to physical key 4 or 8, depending
 821          * on the firmware version.
 822          * So we must adjust the index here.
 823          */
 824         index -= pairwise_keys_start;
 825         B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
 826
 827         if (addr) {
 828                 addrtmp[0] = addr[0];
 829                 addrtmp[0] |= ((u32) (addr[1]) << 8);
 830                 addrtmp[0] |= ((u32) (addr[2]) << 16);
 831                 addrtmp[0] |= ((u32) (addr[3]) << 24);
 832                 addrtmp[1] = addr[4];
 833                 addrtmp[1] |= ((u32) (addr[5]) << 8);
 834         }
 835
 836         /* Receive match transmitter address (RCMTA) mechanism */
 837         b43_shm_write32(dev, B43_SHM_RCMTA,
 838                         (index * 2) + 0, addrtmp[0]);
 839         b43_shm_write16(dev, B43_SHM_RCMTA,
 840                         (index * 2) + 1, addrtmp[1]);
 841 }
 842
 843 /* The ucode will use phase1 key with TEK key to decrypt rx packets.
 844  * When a packet is received, the iv32 is checked.
 845  * - if it doesn't the packet is returned without modification (and software
 846  *   decryption can be done). That's what happen when iv16 wrap.
 847  * - if it does, the rc4 key is computed, and decryption is tried.
 848  *   Either it will success and B43_RX_MAC_DEC is returned,
 849  *   either it fails and B43_RX_MAC_DEC|B43_RX_MAC_DECERR is returned
 850  *   and the packet is not usable (it got modified by the ucode).
 851  * So in order to never have B43_RX_MAC_DECERR, we should provide
 852  * a iv32 and phase1key that match. Because we drop packets in case of
 853  * B43_RX_MAC_DECERR, if we have a correct iv32 but a wrong phase1key, all
 854  * packets will be lost without higher layer knowing (ie no resync possible
 855  * until next wrap).
 856  *
 857  * NOTE : this should support 50 key like RCMTA because
 858  * (B43_SHM_SH_KEYIDXBLOCK - B43_SHM_SH_TKIPTSCTTAK)/14 = 50
 859  */
 860 static void rx_tkip_phase1_write(struct b43_wldev *dev, u8 index, u32 iv32,
 861                 u16 *phase1key)
 862 {
 863         unsigned int i;
 864         u32 offset;
 865         u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
 866
 867         if (!modparam_hwtkip)
 868                 return;
 869
 870         if (b43_new_kidx_api(dev))
 871                 pairwise_keys_start = B43_NR_GROUP_KEYS;
 872
 873         B43_WARN_ON(index < pairwise_keys_start);
 874         /* We have four default TX keys and possibly four default RX keys.
 875          * Physical mac 0 is mapped to physical key 4 or 8, depending
 876          * on the firmware version.
 877          * So we must adjust the index here.
 878          */
 879         index -= pairwise_keys_start;
 880         B43_WARN_ON(index >= B43_NR_PAIRWISE_KEYS);
 881
 882         if (b43_debug(dev, B43_DBG_KEYS)) {
 883                 b43dbg(dev->wl, "rx_tkip_phase1_write : idx 0x%x, iv32 0x%x\n",
 884                                 index, iv32);
 885         }
 886         /* Write the key to the  RX tkip shared mem */
 887         offset = B43_SHM_SH_TKIPTSCTTAK + index * (10 + 4);
 888         for (i = 0; i < 10; i += 2) {
 889                 b43_shm_write16(dev, B43_SHM_SHARED, offset + i,
 890                                 phase1key ? phase1key[i / 2] : 0);
 891         }
 892         b43_shm_write16(dev, B43_SHM_SHARED, offset + i, iv32);
 893         b43_shm_write16(dev, B43_SHM_SHARED, offset + i + 2, iv32 >> 16);
 894 }
 895
 896 static void b43_op_update_tkip_key(struct ieee80211_hw *hw,
 897                                    struct ieee80211_vif *vif,
 898                                    struct ieee80211_key_conf *keyconf,
 899                                    struct ieee80211_sta *sta,
 900                                    u32 iv32, u16 *phase1key)
 901 {
 902         struct b43_wl *wl = hw_to_b43_wl(hw);
 903         struct b43_wldev *dev;
 904         int index = keyconf->hw_key_idx;
 905
 906         if (B43_WARN_ON(!modparam_hwtkip))
 907                 return;
 908
 909         /* This is only called from the RX path through mac80211, where
 910          * our mutex is already locked. */
 911         B43_WARN_ON(!mutex_is_locked(&wl->mutex));
 912         dev = wl->current_dev;
 913         B43_WARN_ON(!dev || b43_status(dev) < B43_STAT_INITIALIZED);
 914
 915         keymac_write(dev, index, NULL); /* First zero out mac to avoid race */
 916
 917         rx_tkip_phase1_write(dev, index, iv32, phase1key);
 918         /* only pairwise TKIP keys are supported right now */
 919         if (WARN_ON(!sta))
 920                 return;
 921         keymac_write(dev, index, sta->addr);
 922 }
 923
 924 static void do_key_write(struct b43_wldev *dev,
 925                          u8 index, u8 algorithm,
 926                          const u8 *key, size_t key_len, const u8 *mac_addr)
 927 {
 928         u8 buf[B43_SEC_KEYSIZE] = { 0, };
 929         u8 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
 930
 931         if (b43_new_kidx_api(dev))
 932                 pairwise_keys_start = B43_NR_GROUP_KEYS;
 933
 934         B43_WARN_ON(index >= ARRAY_SIZE(dev->key));
 935         B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
 936
 937         if (index >= pairwise_keys_start)
 938                 keymac_write(dev, index, NULL); /* First zero out mac. */
 939         if (algorithm == B43_SEC_ALGO_TKIP) {
 940                 /*
 941                  * We should provide an initial iv32, phase1key pair.
 942                  * We could start with iv32=0 and compute the corresponding
 943                  * phase1key, but this means calling ieee80211_get_tkip_key
 944                  * with a fake skb (or export other tkip function).
 945                  * Because we are lazy we hope iv32 won't start with
 946                  * 0xffffffff and let's b43_op_update_tkip_key provide a
 947                  * correct pair.
 948                  */
 949                 rx_tkip_phase1_write(dev, index, 0xffffffff, (u16*)buf);
 950         } else if (index >= pairwise_keys_start) /* clear it */
 951                 rx_tkip_phase1_write(dev, index, 0, NULL);
 952         if (key)
 953                 memcpy(buf, key, key_len);
 954         key_write(dev, index, algorithm, buf);
 955         if (index >= pairwise_keys_start)
 956                 keymac_write(dev, index, mac_addr);
 957
 958         dev->key[index].algorithm = algorithm;
 959 }
 960
 961 static int b43_key_write(struct b43_wldev *dev,
 962                          int index, u8 algorithm,
 963                          const u8 *key, size_t key_len,
 964                          const u8 *mac_addr,
 965                          struct ieee80211_key_conf *keyconf)
 966 {
 967         int i;
 968         int pairwise_keys_start;
 969
 970         /* For ALG_TKIP the key is encoded as a 256-bit (32 byte) data block:
 971          *      - Temporal Encryption Key (128 bits)
 972          *      - Temporal Authenticator Tx MIC Key (64 bits)
 973          *      - Temporal Authenticator Rx MIC Key (64 bits)
 974          *
 975          *      Hardware only store TEK
 976          */
 977         if (algorithm == B43_SEC_ALGO_TKIP && key_len == 32)
 978                 key_len = 16;
 979         if (key_len > B43_SEC_KEYSIZE)
 980                 return -EINVAL;
 981         for (i = 0; i < ARRAY_SIZE(dev->key); i++) {
 982                 /* Check that we don't already have this key. */
 983                 B43_WARN_ON(dev->key[i].keyconf == keyconf);
 984         }
 985         if (index < 0) {
 986                 /* Pairwise key. Get an empty slot for the key. */
 987                 if (b43_new_kidx_api(dev))
 988                         pairwise_keys_start = B43_NR_GROUP_KEYS;
 989                 else
 990                         pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
 991                 for (i = pairwise_keys_start;
 992                      i < pairwise_keys_start + B43_NR_PAIRWISE_KEYS;
 993                      i++) {
 994                         B43_WARN_ON(i >= ARRAY_SIZE(dev->key));
 995                         if (!dev->key[i].keyconf) {
 996                                 /* found empty */
 997                                 index = i;
 998                                 break;
 999                         }
1000                 }
1001                 if (index < 0) {
1002                         b43warn(dev->wl, "Out of hardware key memory\n");
1003                         return -ENOSPC;
1004                 }
1005         } else
1006                 B43_WARN_ON(index > 3);
1007
1008         do_key_write(dev, index, algorithm, key, key_len, mac_addr);
1009         if ((index <= 3) && !b43_new_kidx_api(dev)) {
1010                 /* Default RX key */
1011                 B43_WARN_ON(mac_addr);
1012                 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
1013         }
1014         keyconf->hw_key_idx = index;
1015         dev->key[index].keyconf = keyconf;
1016
1017         return 0;
1018 }
1019
1020 static int b43_key_clear(struct b43_wldev *dev, int index)
1021 {
1022         if (B43_WARN_ON((index < 0) || (index >= ARRAY_SIZE(dev->key))))
1023                 return -EINVAL;
1024         do_key_write(dev, index, B43_SEC_ALGO_NONE,
1025                      NULL, B43_SEC_KEYSIZE, NULL);
1026         if ((index <= 3) && !b43_new_kidx_api(dev)) {
1027                 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
1028                              NULL, B43_SEC_KEYSIZE, NULL);
1029         }
1030         dev->key[index].keyconf = NULL;
1031
1032         return 0;
1033 }
1034
1035 static void b43_clear_keys(struct b43_wldev *dev)
1036 {
1037         int i, count;
1038
1039         if (b43_new_kidx_api(dev))
1040                 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1041         else
1042                 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1043         for (i = 0; i < count; i++)
1044                 b43_key_clear(dev, i);
1045 }
1046
1047 static void b43_dump_keymemory(struct b43_wldev *dev)
1048 {
1049         unsigned int i, index, count, offset, pairwise_keys_start;
1050         u8 mac[ETH_ALEN];
1051         u16 algo;
1052         u32 rcmta0;
1053         u16 rcmta1;
1054         u64 hf;
1055         struct b43_key *key;
1056
1057         if (!b43_debug(dev, B43_DBG_KEYS))
1058                 return;
1059
1060         hf = b43_hf_read(dev);
1061         b43dbg(dev->wl, "Hardware key memory dump:  USEDEFKEYS=%u\n",
1062                !!(hf & B43_HF_USEDEFKEYS));
1063         if (b43_new_kidx_api(dev)) {
1064                 pairwise_keys_start = B43_NR_GROUP_KEYS;
1065                 count = B43_NR_GROUP_KEYS + B43_NR_PAIRWISE_KEYS;
1066         } else {
1067                 pairwise_keys_start = B43_NR_GROUP_KEYS * 2;
1068                 count = B43_NR_GROUP_KEYS * 2 + B43_NR_PAIRWISE_KEYS;
1069         }
1070         for (index = 0; index < count; index++) {
1071                 key = &(dev->key[index]);
1072                 printk(KERN_DEBUG "Key slot %02u: %s",
1073                        index, (key->keyconf == NULL) ? " " : "*");
1074                 offset = dev->ktp + (index * B43_SEC_KEYSIZE);
1075                 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
1076                         u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1077                         printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1078                 }
1079
1080                 algo = b43_shm_read16(dev, B43_SHM_SHARED,
1081                                       B43_SHM_SH_KEYIDXBLOCK + (index * 2));
1082                 printk("   Algo: %04X/%02X", algo, key->algorithm);
1083
1084                 if (index >= pairwise_keys_start) {
1085                         if (key->algorithm == B43_SEC_ALGO_TKIP) {
1086                                 printk("   TKIP: ");
1087                                 offset = B43_SHM_SH_TKIPTSCTTAK + (index - 4) * (10 + 4);
1088                                 for (i = 0; i < 14; i += 2) {
1089                                         u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, offset + i);
1090                                         printk("%02X%02X", (tmp & 0xFF), ((tmp >> 8) & 0xFF));
1091                                 }
1092                         }
1093                         rcmta0 = b43_shm_read32(dev, B43_SHM_RCMTA,
1094                                                 ((index - pairwise_keys_start) * 2) + 0);
1095                         rcmta1 = b43_shm_read16(dev, B43_SHM_RCMTA,
1096                                                 ((index - pairwise_keys_start) * 2) + 1);
1097                         *((__le32 *)(&mac[0])) = cpu_to_le32(rcmta0);
1098                         *((__le16 *)(&mac[4])) = cpu_to_le16(rcmta1);
1099                         printk("   MAC: %pM", mac);
1100                 } else
1101                         printk("   DEFAULT KEY");
1102                 printk("\n");
1103         }
1104 }
1105
1106 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
1107 {
1108         u32 macctl;
1109         u16 ucstat;
1110         bool hwps;
1111         bool awake;
1112         int i;
1113
1114         B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
1115                     (ps_flags & B43_PS_DISABLED));
1116         B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
1117
1118         if (ps_flags & B43_PS_ENABLED) {
1119                 hwps = true;
1120         } else if (ps_flags & B43_PS_DISABLED) {
1121                 hwps = false;
1122         } else {
1123                 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
1124                 //      and thus is not an AP and we are associated, set bit 25
1125         }
1126         if (ps_flags & B43_PS_AWAKE) {
1127                 awake = true;
1128         } else if (ps_flags & B43_PS_ASLEEP) {
1129                 awake = false;
1130         } else {
1131                 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
1132                 //      or we are associated, or FIXME, or the latest PS-Poll packet sent was
1133                 //      successful, set bit26
1134         }
1135
1136 /* FIXME: For now we force awake-on and hwps-off */
1137         hwps = false;
1138         awake = true;
1139
1140         macctl = b43_read32(dev, B43_MMIO_MACCTL);
1141         if (hwps)
1142                 macctl |= B43_MACCTL_HWPS;
1143         else
1144                 macctl &= ~B43_MACCTL_HWPS;
1145         if (awake)
1146                 macctl |= B43_MACCTL_AWAKE;
1147         else
1148                 macctl &= ~B43_MACCTL_AWAKE;
1149         b43_write32(dev, B43_MMIO_MACCTL, macctl);
1150         /* Commit write */
1151         b43_read32(dev, B43_MMIO_MACCTL);
1152         if (awake && dev->dev->core_rev >= 5) {
1153                 /* Wait for the microcode to wake up. */
1154                 for (i = 0; i < 100; i++) {
1155                         ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
1156                                                 B43_SHM_SH_UCODESTAT);
1157                         if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
1158                                 break;
1159                         udelay(10);
1160                 }
1161         }
1162 }
1163
1164 #ifdef CONFIG_B43_BCMA
1165 static void b43_bcma_phy_reset(struct b43_wldev *dev)
1166 {
1167         u32 flags;
1168
1169         /* Put PHY into reset */
1170         flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1171         flags |= B43_BCMA_IOCTL_PHY_RESET;
1172         flags |= B43_BCMA_IOCTL_PHY_BW_20MHZ; /* Make 20 MHz def */
1173         bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
1174         udelay(2);
1175
1176         /* Take PHY out of reset */
1177         flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1178         flags &= ~B43_BCMA_IOCTL_PHY_RESET;
1179         flags |= BCMA_IOCTL_FGC;
1180         bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
1181         udelay(1);
1182
1183         /* Do not force clock anymore */
1184         flags = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
1185         flags &= ~BCMA_IOCTL_FGC;
1186         bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, flags);
1187         udelay(1);
1188 }
1189
1190 static void b43_bcma_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1191 {
1192         b43_device_enable(dev, B43_BCMA_IOCTL_PHY_CLKEN);
1193         bcma_core_set_clockmode(dev->dev->bdev, BCMA_CLKMODE_FAST);
1194         b43_bcma_phy_reset(dev);
1195         bcma_core_pll_ctl(dev->dev->bdev, 0x300, 0x3000000, true);
1196 }
1197 #endif
1198
1199 static void b43_ssb_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1200 {
1201         struct ssb_device *sdev = dev->dev->sdev;
1202         u32 tmslow;
1203         u32 flags = 0;
1204
1205         if (gmode)
1206                 flags |= B43_TMSLOW_GMODE;
1207         flags |= B43_TMSLOW_PHYCLKEN;
1208         flags |= B43_TMSLOW_PHYRESET;
1209         if (dev->phy.type == B43_PHYTYPE_N)
1210                 flags |= B43_TMSLOW_PHY_BANDWIDTH_20MHZ; /* Make 20 MHz def */
1211         b43_device_enable(dev, flags);
1212         msleep(2);              /* Wait for the PLL to turn on. */
1213
1214         /* Now take the PHY out of Reset again */
1215         tmslow = ssb_read32(sdev, SSB_TMSLOW);
1216         tmslow |= SSB_TMSLOW_FGC;
1217         tmslow &= ~B43_TMSLOW_PHYRESET;
1218         ssb_write32(sdev, SSB_TMSLOW, tmslow);
1219         ssb_read32(sdev, SSB_TMSLOW);   /* flush */
1220         msleep(1);
1221         tmslow &= ~SSB_TMSLOW_FGC;
1222         ssb_write32(sdev, SSB_TMSLOW, tmslow);
1223         ssb_read32(sdev, SSB_TMSLOW);   /* flush */
1224         msleep(1);
1225 }
1226
1227 void b43_wireless_core_reset(struct b43_wldev *dev, bool gmode)
1228 {
1229         u32 macctl;
1230
1231         switch (dev->dev->bus_type) {
1232 #ifdef CONFIG_B43_BCMA
1233         case B43_BUS_BCMA:
1234                 b43_bcma_wireless_core_reset(dev, gmode);
1235                 break;
1236 #endif
1237 #ifdef CONFIG_B43_SSB
1238         case B43_BUS_SSB:
1239                 b43_ssb_wireless_core_reset(dev, gmode);
1240                 break;
1241 #endif
1242         }
1243
1244         /* Turn Analog ON, but only if we already know the PHY-type.
1245          * This protects against very early setup where we don't know the
1246          * PHY-type, yet. wireless_core_reset will be called once again later,
1247          * when we know the PHY-type. */
1248         if (dev->phy.ops)
1249                 dev->phy.ops->switch_analog(dev, 1);
1250
1251         macctl = b43_read32(dev, B43_MMIO_MACCTL);
1252         macctl &= ~B43_MACCTL_GMODE;
1253         if (gmode)
1254                 macctl |= B43_MACCTL_GMODE;
1255         macctl |= B43_MACCTL_IHR_ENABLED;
1256         b43_write32(dev, B43_MMIO_MACCTL, macctl);
1257 }
1258
1259 static void handle_irq_transmit_status(struct b43_wldev *dev)
1260 {
1261         u32 v0, v1;
1262         u16 tmp;
1263         struct b43_txstatus stat;
1264
1265         while (1) {
1266                 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1267                 if (!(v0 & 0x00000001))
1268                         break;
1269                 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1270
1271                 stat.cookie = (v0 >> 16);
1272                 stat.seq = (v1 & 0x0000FFFF);
1273                 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
1274                 tmp = (v0 & 0x0000FFFF);
1275                 stat.frame_count = ((tmp & 0xF000) >> 12);
1276                 stat.rts_count = ((tmp & 0x0F00) >> 8);
1277                 stat.supp_reason = ((tmp & 0x001C) >> 2);
1278                 stat.pm_indicated = !!(tmp & 0x0080);
1279                 stat.intermediate = !!(tmp & 0x0040);
1280                 stat.for_ampdu = !!(tmp & 0x0020);
1281                 stat.acked = !!(tmp & 0x0002);
1282
1283                 b43_handle_txstatus(dev, &stat);
1284         }
1285 }
1286
1287 static void drain_txstatus_queue(struct b43_wldev *dev)
1288 {
1289         u32 dummy;
1290
1291         if (dev->dev->core_rev < 5)
1292                 return;
1293         /* Read all entries from the microcode TXstatus FIFO
1294          * and throw them away.
1295          */
1296         while (1) {
1297                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
1298                 if (!(dummy & 0x00000001))
1299                         break;
1300                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
1301         }
1302 }
1303
1304 static u32 b43_jssi_read(struct b43_wldev *dev)
1305 {
1306         u32 val = 0;
1307
1308         val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1309         val <<= 16;
1310         val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1311
1312         return val;
1313 }
1314
1315 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1316 {
1317         b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1318         b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1319 }
1320
1321 static void b43_generate_noise_sample(struct b43_wldev *dev)
1322 {
1323         b43_jssi_write(dev, 0x7F7F7F7F);
1324         b43_write32(dev, B43_MMIO_MACCMD,
1325                     b43_read32(dev, B43_MMIO_MACCMD) | B43_MACCMD_BGNOISE);
1326 }
1327
1328 static void b43_calculate_link_quality(struct b43_wldev *dev)
1329 {
1330         /* Top half of Link Quality calculation. */
1331
1332         if (dev->phy.type != B43_PHYTYPE_G)
1333                 return;
1334         if (dev->noisecalc.calculation_running)
1335                 return;
1336         dev->noisecalc.calculation_running = true;
1337         dev->noisecalc.nr_samples = 0;
1338
1339         b43_generate_noise_sample(dev);
1340 }
1341
1342 static void handle_irq_noise(struct b43_wldev *dev)
1343 {
1344         struct b43_phy_g *phy = dev->phy.g;
1345         u16 tmp;
1346         u8 noise[4];
1347         u8 i, j;
1348         s32 average;
1349
1350         /* Bottom half of Link Quality calculation. */
1351
1352         if (dev->phy.type != B43_PHYTYPE_G)
1353                 return;
1354
1355         /* Possible race condition: It might be possible that the user
1356          * changed to a different channel in the meantime since we
1357          * started the calculation. We ignore that fact, since it's
1358          * not really that much of a problem. The background noise is
1359          * an estimation only anyway. Slightly wrong results will get damped
1360          * by the averaging of the 8 sample rounds. Additionally the
1361          * value is shortlived. So it will be replaced by the next noise
1362          * calculation round soon. */
1363
1364         B43_WARN_ON(!dev->noisecalc.calculation_running);
1365         *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1366         if (noise[0] == 0x7F || noise[1] == 0x7F ||
1367             noise[2] == 0x7F || noise[3] == 0x7F)
1368                 goto generate_new;
1369
1370         /* Get the noise samples. */
1371         B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1372         i = dev->noisecalc.nr_samples;
1373         noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1374         noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1375         noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1376         noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1377         dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1378         dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1379         dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1380         dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1381         dev->noisecalc.nr_samples++;
1382         if (dev->noisecalc.nr_samples == 8) {
1383                 /* Calculate the Link Quality by the noise samples. */
1384                 average = 0;
1385                 for (i = 0; i < 8; i++) {
1386                         for (j = 0; j < 4; j++)
1387                                 average += dev->noisecalc.samples[i][j];
1388                 }
1389                 average /= (8 * 4);
1390                 average *= 125;
1391                 average += 64;
1392                 average /= 128;
1393                 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1394                 tmp = (tmp / 128) & 0x1F;
1395                 if (tmp >= 8)
1396                         average += 2;
1397                 else
1398                         average -= 25;
1399                 if (tmp == 8)
1400                         average -= 72;
1401                 else
1402                         average -= 48;
1403
1404                 dev->stats.link_noise = average;
1405                 dev->noisecalc.calculation_running = false;
1406                 return;
1407         }
1408 generate_new:
1409         b43_generate_noise_sample(dev);
1410 }
1411
1412 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1413 {
1414         if (b43_is_mode(dev->wl, NL80211_IFTYPE_AP)) {
1415                 ///TODO: PS TBTT
1416         } else {
1417                 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1418                         b43_power_saving_ctl_bits(dev, 0);
1419         }
1420         if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC))
1421                 dev->dfq_valid = true;
1422 }
1423
1424 static void handle_irq_atim_end(struct b43_wldev *dev)
1425 {
1426         if (dev->dfq_valid) {
1427                 b43_write32(dev, B43_MMIO_MACCMD,
1428                             b43_read32(dev, B43_MMIO_MACCMD)
1429                             | B43_MACCMD_DFQ_VALID);
1430                 dev->dfq_valid = false;
1431         }
1432 }
1433
1434 static void handle_irq_pmq(struct b43_wldev *dev)
1435 {
1436         u32 tmp;
1437
1438         //TODO: AP mode.
1439
1440         while (1) {
1441                 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1442                 if (!(tmp & 0x00000008))
1443                         break;
1444         }
1445         /* 16bit write is odd, but correct. */
1446         b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1447 }
1448
1449 static void b43_write_template_common(struct b43_wldev *dev,
1450                                       const u8 *data, u16 size,
1451                                       u16 ram_offset,
1452                                       u16 shm_size_offset, u8 rate)
1453 {
1454         u32 i, tmp;
1455         struct b43_plcp_hdr4 plcp;
1456
1457         plcp.data = 0;
1458         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1459         b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1460         ram_offset += sizeof(u32);
1461         /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1462          * So leave the first two bytes of the next write blank.
1463          */
1464         tmp = (u32) (data[0]) << 16;
1465         tmp |= (u32) (data[1]) << 24;
1466         b43_ram_write(dev, ram_offset, tmp);
1467         ram_offset += sizeof(u32);
1468         for (i = 2; i < size; i += sizeof(u32)) {
1469                 tmp = (u32) (data[i + 0]);
1470                 if (i + 1 < size)
1471                         tmp |= (u32) (data[i + 1]) << 8;
1472                 if (i + 2 < size)
1473                         tmp |= (u32) (data[i + 2]) << 16;
1474                 if (i + 3 < size)
1475                         tmp |= (u32) (data[i + 3]) << 24;
1476                 b43_ram_write(dev, ram_offset + i - 2, tmp);
1477         }
1478         b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1479                         size + sizeof(struct b43_plcp_hdr6));
1480 }
1481
1482 /* Check if the use of the antenna that ieee80211 told us to
1483  * use is possible. This will fall back to DEFAULT.
1484  * "antenna_nr" is the antenna identifier we got from ieee80211. */
1485 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
1486                                   u8 antenna_nr)
1487 {
1488         u8 antenna_mask;
1489
1490         if (antenna_nr == 0) {
1491                 /* Zero means "use default antenna". That's always OK. */
1492                 return 0;
1493         }
1494
1495         /* Get the mask of available antennas. */
1496         if (dev->phy.gmode)
1497                 antenna_mask = dev->dev->bus_sprom->ant_available_bg;
1498         else
1499                 antenna_mask = dev->dev->bus_sprom->ant_available_a;
1500
1501         if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
1502                 /* This antenna is not available. Fall back to default. */
1503                 return 0;
1504         }
1505
1506         return antenna_nr;
1507 }
1508
1509 /* Convert a b43 antenna number value to the PHY TX control value. */
1510 static u16 b43_antenna_to_phyctl(int antenna)
1511 {
1512         switch (antenna) {
1513         case B43_ANTENNA0:
1514                 return B43_TXH_PHY_ANT0;
1515         case B43_ANTENNA1:
1516                 return B43_TXH_PHY_ANT1;
1517         case B43_ANTENNA2:
1518                 return B43_TXH_PHY_ANT2;
1519         case B43_ANTENNA3:
1520                 return B43_TXH_PHY_ANT3;
1521         case B43_ANTENNA_AUTO0:
1522         case B43_ANTENNA_AUTO1:
1523                 return B43_TXH_PHY_ANT01AUTO;
1524         }
1525         B43_WARN_ON(1);
1526         return 0;
1527 }
1528
1529 static void b43_write_beacon_template(struct b43_wldev *dev,
1530                                       u16 ram_offset,
1531                                       u16 shm_size_offset)
1532 {
1533         unsigned int i, len, variable_len;
1534         const struct ieee80211_mgmt *bcn;
1535         const u8 *ie;
1536         bool tim_found = false;
1537         unsigned int rate;
1538         u16 ctl;
1539         int antenna;
1540         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon);
1541
1542         bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data);
1543         len = min((size_t) dev->wl->current_beacon->len,
1544                   0x200 - sizeof(struct b43_plcp_hdr6));
1545         rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value;
1546
1547         b43_write_template_common(dev, (const u8 *)bcn,
1548                                   len, ram_offset, shm_size_offset, rate);
1549
1550         /* Write the PHY TX control parameters. */
1551         antenna = B43_ANTENNA_DEFAULT;
1552         antenna = b43_antenna_to_phyctl(antenna);
1553         ctl = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
1554         /* We can't send beacons with short preamble. Would get PHY errors. */
1555         ctl &= ~B43_TXH_PHY_SHORTPRMBL;
1556         ctl &= ~B43_TXH_PHY_ANT;
1557         ctl &= ~B43_TXH_PHY_ENC;
1558         ctl |= antenna;
1559         if (b43_is_cck_rate(rate))
1560                 ctl |= B43_TXH_PHY_ENC_CCK;
1561         else
1562                 ctl |= B43_TXH_PHY_ENC_OFDM;
1563         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
1564
1565         /* Find the position of the TIM and the DTIM_period value
1566          * and write them to SHM. */
1567         ie = bcn->u.beacon.variable;
1568         variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
1569         for (i = 0; i < variable_len - 2; ) {
1570                 uint8_t ie_id, ie_len;
1571
1572                 ie_id = ie[i];
1573                 ie_len = ie[i + 1];
1574                 if (ie_id == 5) {
1575                         u16 tim_position;
1576                         u16 dtim_period;
1577                         /* This is the TIM Information Element */
1578
1579                         /* Check whether the ie_len is in the beacon data range. */
1580                         if (variable_len < ie_len + 2 + i)
1581                                 break;
1582                         /* A valid TIM is at least 4 bytes long. */
1583                         if (ie_len < 4)
1584                                 break;
1585                         tim_found = true;
1586
1587                         tim_position = sizeof(struct b43_plcp_hdr6);
1588                         tim_position += offsetof(struct ieee80211_mgmt, u.beacon.variable);
1589                         tim_position += i;
1590
1591                         dtim_period = ie[i + 3];
1592
1593                         b43_shm_write16(dev, B43_SHM_SHARED,
1594                                         B43_SHM_SH_TIMBPOS, tim_position);
1595                         b43_shm_write16(dev, B43_SHM_SHARED,
1596                                         B43_SHM_SH_DTIMPER, dtim_period);
1597                         break;
1598                 }
1599                 i += ie_len + 2;
1600         }
1601         if (!tim_found) {
1602                 /*
1603                  * If ucode wants to modify TIM do it behind the beacon, this
1604                  * will happen, for example, when doing mesh networking.
1605                  */
1606                 b43_shm_write16(dev, B43_SHM_SHARED,
1607                                 B43_SHM_SH_TIMBPOS,
1608                                 len + sizeof(struct b43_plcp_hdr6));
1609                 b43_shm_write16(dev, B43_SHM_SHARED,
1610                                 B43_SHM_SH_DTIMPER, 0);
1611         }
1612         b43dbg(dev->wl, "Updated beacon template at 0x%x\n", ram_offset);
1613 }
1614
1615 static void b43_upload_beacon0(struct b43_wldev *dev)
1616 {
1617         struct b43_wl *wl = dev->wl;
1618
1619         if (wl->beacon0_uploaded)
1620                 return;
1621         b43_write_beacon_template(dev, 0x68, 0x18);
1622         wl->beacon0_uploaded = true;
1623 }
1624
1625 static void b43_upload_beacon1(struct b43_wldev *dev)
1626 {
1627         struct b43_wl *wl = dev->wl;
1628
1629         if (wl->beacon1_uploaded)
1630                 return;
1631         b43_write_beacon_template(dev, 0x468, 0x1A);
1632         wl->beacon1_uploaded = true;
1633 }
1634
1635 static void handle_irq_beacon(struct b43_wldev *dev)
1636 {
1637         struct b43_wl *wl = dev->wl;
1638         u32 cmd, beacon0_valid, beacon1_valid;
1639
1640         if (!b43_is_mode(wl, NL80211_IFTYPE_AP) &&
1641             !b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) &&
1642             !b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
1643                 return;
1644
1645         /* This is the bottom half of the asynchronous beacon update. */
1646
1647         /* Ignore interrupt in the future. */
1648         dev->irq_mask &= ~B43_IRQ_BEACON;
1649
1650         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1651         beacon0_valid = (cmd & B43_MACCMD_BEACON0_VALID);
1652         beacon1_valid = (cmd & B43_MACCMD_BEACON1_VALID);
1653
1654         /* Schedule interrupt manually, if busy. */
1655         if (beacon0_valid && beacon1_valid) {
1656                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1657                 dev->irq_mask |= B43_IRQ_BEACON;
1658                 return;
1659         }
1660
1661         if (unlikely(wl->beacon_templates_virgin)) {
1662                 /* We never uploaded a beacon before.
1663                  * Upload both templates now, but only mark one valid. */
1664                 wl->beacon_templates_virgin = false;
1665                 b43_upload_beacon0(dev);
1666                 b43_upload_beacon1(dev);
1667                 cmd = b43_read32(dev, B43_MMIO_MACCMD);
1668                 cmd |= B43_MACCMD_BEACON0_VALID;
1669                 b43_write32(dev, B43_MMIO_MACCMD, cmd);
1670         } else {
1671                 if (!beacon0_valid) {
1672                         b43_upload_beacon0(dev);
1673                         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1674                         cmd |= B43_MACCMD_BEACON0_VALID;
1675                         b43_write32(dev, B43_MMIO_MACCMD, cmd);
1676                 } else if (!beacon1_valid) {
1677                         b43_upload_beacon1(dev);
1678                         cmd = b43_read32(dev, B43_MMIO_MACCMD);
1679                         cmd |= B43_MACCMD_BEACON1_VALID;
1680                         b43_write32(dev, B43_MMIO_MACCMD, cmd);
1681                 }
1682         }
1683 }
1684
1685 static void b43_do_beacon_update_trigger_work(struct b43_wldev *dev)
1686 {
1687         u32 old_irq_mask = dev->irq_mask;
1688
1689         /* update beacon right away or defer to irq */
1690         handle_irq_beacon(dev);
1691         if (old_irq_mask != dev->irq_mask) {
1692                 /* The handler updated the IRQ mask. */
1693                 B43_WARN_ON(!dev->irq_mask);
1694                 if (b43_read32(dev, B43_MMIO_GEN_IRQ_MASK)) {
1695                         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1696                 } else {
1697                         /* Device interrupts are currently disabled. That means
1698                          * we just ran the hardirq handler and scheduled the
1699                          * IRQ thread. The thread will write the IRQ mask when
1700                          * it finished, so there's nothing to do here. Writing
1701                          * the mask _here_ would incorrectly re-enable IRQs. */
1702                 }
1703         }
1704 }
1705
1706 static void b43_beacon_update_trigger_work(struct work_struct *work)
1707 {
1708         struct b43_wl *wl = container_of(work, struct b43_wl,
1709                                          beacon_update_trigger);
1710         struct b43_wldev *dev;
1711
1712         mutex_lock(&wl->mutex);
1713         dev = wl->current_dev;
1714         if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
1715                 if (b43_bus_host_is_sdio(dev->dev)) {
1716                         /* wl->mutex is enough. */
1717                         b43_do_beacon_update_trigger_work(dev);
1718                         mmiowb();
1719                 } else {
1720                         spin_lock_irq(&wl->hardirq_lock);
1721                         b43_do_beacon_update_trigger_work(dev);
1722                         mmiowb();
1723                         spin_unlock_irq(&wl->hardirq_lock);
1724                 }
1725         }
1726         mutex_unlock(&wl->mutex);
1727 }
1728
1729 /* Asynchronously update the packet templates in template RAM.
1730  * Locking: Requires wl->mutex to be locked. */
1731 static void b43_update_templates(struct b43_wl *wl)
1732 {
1733         struct sk_buff *beacon;
1734
1735         /* This is the top half of the ansynchronous beacon update.
1736          * The bottom half is the beacon IRQ.
1737          * Beacon update must be asynchronous to avoid sending an
1738          * invalid beacon. This can happen for example, if the firmware
1739          * transmits a beacon while we are updating it. */
1740
1741         /* We could modify the existing beacon and set the aid bit in
1742          * the TIM field, but that would probably require resizing and
1743          * moving of data within the beacon template.
1744          * Simply request a new beacon and let mac80211 do the hard work. */
1745         beacon = ieee80211_beacon_get(wl->hw, wl->vif);
1746         if (unlikely(!beacon))
1747                 return;
1748
1749         if (wl->current_beacon)
1750                 dev_kfree_skb_any(wl->current_beacon);
1751         wl->current_beacon = beacon;
1752         wl->beacon0_uploaded = false;
1753         wl->beacon1_uploaded = false;
1754         ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger);
1755 }
1756
1757 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1758 {
1759         b43_time_lock(dev);
1760         if (dev->dev->core_rev >= 3) {
1761                 b43_write32(dev, B43_MMIO_TSF_CFP_REP, (beacon_int << 16));
1762                 b43_write32(dev, B43_MMIO_TSF_CFP_START, (beacon_int << 10));
1763         } else {
1764                 b43_write16(dev, 0x606, (beacon_int >> 6));
1765                 b43_write16(dev, 0x610, beacon_int);
1766         }
1767         b43_time_unlock(dev);
1768         b43dbg(dev->wl, "Set beacon interval to %u\n", beacon_int);
1769 }
1770
1771 static void b43_handle_firmware_panic(struct b43_wldev *dev)
1772 {
1773         u16 reason;
1774
1775         /* Read the register that contains the reason code for the panic. */
1776         reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_FWPANIC_REASON_REG);
1777         b43err(dev->wl, "Whoopsy, firmware panic! Reason: %u\n", reason);
1778
1779         switch (reason) {
1780         default:
1781                 b43dbg(dev->wl, "The panic reason is unknown.\n");
1782                 /* fallthrough */
1783         case B43_FWPANIC_DIE:
1784                 /* Do not restart the controller or firmware.
1785                  * The device is nonfunctional from now on.
1786                  * Restarting would result in this panic to trigger again,
1787                  * so we avoid that recursion. */
1788                 break;
1789         case B43_FWPANIC_RESTART:
1790                 b43_controller_restart(dev, "Microcode panic");
1791                 break;
1792         }
1793 }
1794
1795 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1796 {
1797         unsigned int i, cnt;
1798         u16 reason, marker_id, marker_line;
1799         __le16 *buf;
1800
1801         /* The proprietary firmware doesn't have this IRQ. */
1802         if (!dev->fw.opensource)
1803                 return;
1804
1805         /* Read the register that contains the reason code for this IRQ. */
1806         reason = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_DEBUGIRQ_REASON_REG);
1807
1808         switch (reason) {
1809         case B43_DEBUGIRQ_PANIC:
1810                 b43_handle_firmware_panic(dev);
1811                 break;
1812         case B43_DEBUGIRQ_DUMP_SHM:
1813                 if (!B43_DEBUG)
1814                         break; /* Only with driver debugging enabled. */
1815                 buf = kmalloc(4096, GFP_ATOMIC);
1816                 if (!buf) {
1817                         b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
1818                         goto out;
1819                 }
1820                 for (i = 0; i < 4096; i += 2) {
1821                         u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
1822                         buf[i / 2] = cpu_to_le16(tmp);
1823                 }
1824                 b43info(dev->wl, "Shared memory dump:\n");
1825                 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
1826                                16, 2, buf, 4096, 1);
1827                 kfree(buf);
1828                 break;
1829         case B43_DEBUGIRQ_DUMP_REGS:
1830                 if (!B43_DEBUG)
1831                         break; /* Only with driver debugging enabled. */
1832                 b43info(dev->wl, "Microcode register dump:\n");
1833                 for (i = 0, cnt = 0; i < 64; i++) {
1834                         u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
1835                         if (cnt == 0)
1836                                 printk(KERN_INFO);
1837                         printk("r%02u: 0x%04X  ", i, tmp);
1838                         cnt++;
1839                         if (cnt == 6) {
1840                                 printk("\n");
1841                                 cnt = 0;
1842                         }
1843                 }
1844                 printk("\n");
1845                 break;
1846         case B43_DEBUGIRQ_MARKER:
1847                 if (!B43_DEBUG)
1848                         break; /* Only with driver debugging enabled. */
1849                 marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
1850                                            B43_MARKER_ID_REG);
1851                 marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
1852                                              B43_MARKER_LINE_REG);
1853                 b43info(dev->wl, "The firmware just executed the MARKER(%u) "
1854                         "at line number %u\n",
1855                         marker_id, marker_line);
1856                 break;
1857         default:
1858                 b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
1859                        reason);
1860         }
1861 out:
1862         /* Acknowledge the debug-IRQ, so the firmware can continue. */
1863         b43_shm_write16(dev, B43_SHM_SCRATCH,
1864                         B43_DEBUGIRQ_REASON_REG, B43_DEBUGIRQ_ACK);
1865 }
1866
1867 static void b43_do_interrupt_thread(struct b43_wldev *dev)
1868 {
1869         u32 reason;
1870         u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1871         u32 merged_dma_reason = 0;
1872         int i;
1873
1874         if (unlikely(b43_status(dev) != B43_STAT_STARTED))
1875                 return;
1876
1877         reason = dev->irq_reason;
1878         for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1879                 dma_reason[i] = dev->dma_reason[i];
1880                 merged_dma_reason |= dma_reason[i];
1881         }
1882
1883         if (unlikely(reason & B43_IRQ_MAC_TXERR))
1884                 b43err(dev->wl, "MAC transmission error\n");
1885
1886         if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1887                 b43err(dev->wl, "PHY transmission error\n");
1888                 rmb();
1889                 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1890                         atomic_set(&dev->phy.txerr_cnt,
1891                                    B43_PHY_TX_BADNESS_LIMIT);
1892                         b43err(dev->wl, "Too many PHY TX errors, "
1893                                         "restarting the controller\n");
1894                         b43_controller_restart(dev, "PHY TX errors");
1895                 }
1896         }
1897
1898         if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1899                                           B43_DMAIRQ_NONFATALMASK))) {
1900                 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1901                         b43err(dev->wl, "Fatal DMA error: "
1902                                "0x%08X, 0x%08X, 0x%08X, "
1903                                "0x%08X, 0x%08X, 0x%08X\n",
1904                                dma_reason[0], dma_reason[1],
1905                                dma_reason[2], dma_reason[3],
1906                                dma_reason[4], dma_reason[5]);
1907                         b43err(dev->wl, "This device does not support DMA "
1908                                "on your system. It will now be switched to PIO.\n");
1909                         /* Fall back to PIO transfers if we get fatal DMA errors! */
1910                         dev->use_pio = true;
1911                         b43_controller_restart(dev, "DMA error");
1912                         return;
1913                 }
1914                 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1915                         b43err(dev->wl, "DMA error: "
1916                                "0x%08X, 0x%08X, 0x%08X, "
1917                                "0x%08X, 0x%08X, 0x%08X\n",
1918                                dma_reason[0], dma_reason[1],
1919                                dma_reason[2], dma_reason[3],
1920                                dma_reason[4], dma_reason[5]);
1921                 }
1922         }
1923
1924         if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1925                 handle_irq_ucode_debug(dev);
1926         if (reason & B43_IRQ_TBTT_INDI)
1927                 handle_irq_tbtt_indication(dev);
1928         if (reason & B43_IRQ_ATIM_END)
1929                 handle_irq_atim_end(dev);
1930         if (reason & B43_IRQ_BEACON)
1931                 handle_irq_beacon(dev);
1932         if (reason & B43_IRQ_PMQ)
1933                 handle_irq_pmq(dev);
1934         if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1935                 ;/* TODO */
1936         if (reason & B43_IRQ_NOISESAMPLE_OK)
1937                 handle_irq_noise(dev);
1938
1939         /* Check the DMA reason registers for received data. */
1940         if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1941                 if (b43_using_pio_transfers(dev))
1942                         b43_pio_rx(dev->pio.rx_queue);
1943                 else
1944                         b43_dma_rx(dev->dma.rx_ring);
1945         }
1946         B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1947         B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1948         B43_WARN_ON(dma_reason[3] & B43_DMAIRQ_RX_DONE);
1949         B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1950         B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1951
1952         if (reason & B43_IRQ_TX_OK)
1953                 handle_irq_transmit_status(dev);
1954
1955         /* Re-enable interrupts on the device by restoring the current interrupt mask. */
1956         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
1957
1958 #if B43_DEBUG
1959         if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
1960                 dev->irq_count++;
1961                 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
1962                         if (reason & (1 << i))
1963                                 dev->irq_bit_count[i]++;
1964                 }
1965         }
1966 #endif
1967 }
1968
1969 /* Interrupt thread handler. Handles device interrupts in thread context. */
1970 static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
1971 {
1972         struct b43_wldev *dev = dev_id;
1973
1974         mutex_lock(&dev->wl->mutex);
1975         b43_do_interrupt_thread(dev);
1976         mmiowb();
1977         mutex_unlock(&dev->wl->mutex);
1978
1979         return IRQ_HANDLED;
1980 }
1981
1982 static irqreturn_t b43_do_interrupt(struct b43_wldev *dev)
1983 {
1984         u32 reason;
1985
1986         /* This code runs under wl->hardirq_lock, but _only_ on non-SDIO busses.
1987          * On SDIO, this runs under wl->mutex. */
1988
1989         reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1990         if (reason == 0xffffffff)       /* shared IRQ */
1991                 return IRQ_NONE;
1992         reason &= dev->irq_mask;
1993         if (!reason)
1994                 return IRQ_NONE;
1995
1996         dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1997             & 0x0001DC00;
1998         dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1999             & 0x0000DC00;
2000         dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
2001             & 0x0000DC00;
2002         dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
2003             & 0x0001DC00;
2004         dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
2005             & 0x0000DC00;
2006 /* Unused ring
2007         dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
2008             & 0x0000DC00;
2009 */
2010
2011         /* ACK the interrupt. */
2012         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
2013         b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
2014         b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
2015         b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
2016         b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
2017         b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
2018 /* Unused ring
2019         b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
2020 */
2021
2022         /* Disable IRQs on the device. The IRQ thread handler will re-enable them. */
2023         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
2024         /* Save the reason bitmasks for the IRQ thread handler. */
2025         dev->irq_reason = reason;
2026
2027         return IRQ_WAKE_THREAD;
2028 }
2029
2030 /* Interrupt handler top-half. This runs with interrupts disabled. */
2031 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
2032 {
2033         struct b43_wldev *dev = dev_id;
2034         irqreturn_t ret;
2035
2036         if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2037                 return IRQ_NONE;
2038
2039         spin_lock(&dev->wl->hardirq_lock);
2040         ret = b43_do_interrupt(dev);
2041         mmiowb();
2042         spin_unlock(&dev->wl->hardirq_lock);
2043
2044         return ret;
2045 }
2046
2047 /* SDIO interrupt handler. This runs in process context. */
2048 static void b43_sdio_interrupt_handler(struct b43_wldev *dev)
2049 {
2050         struct b43_wl *wl = dev->wl;
2051         irqreturn_t ret;
2052
2053         mutex_lock(&wl->mutex);
2054
2055         ret = b43_do_interrupt(dev);
2056         if (ret == IRQ_WAKE_THREAD)
2057                 b43_do_interrupt_thread(dev);
2058
2059         mutex_unlock(&wl->mutex);
2060 }
2061
2062 void b43_do_release_fw(struct b43_firmware_file *fw)
2063 {
2064         release_firmware(fw->data);
2065         fw->data = NULL;
2066         fw->filename = NULL;
2067 }
2068
2069 static void b43_release_firmware(struct b43_wldev *dev)
2070 {
2071         b43_do_release_fw(&dev->fw.ucode);
2072         b43_do_release_fw(&dev->fw.pcm);
2073         b43_do_release_fw(&dev->fw.initvals);
2074         b43_do_release_fw(&dev->fw.initvals_band);
2075 }
2076
2077 static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
2078 {
2079         const char text[] =
2080                 "You must go to " \
2081                 "http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware " \
2082                 "and download the correct firmware for this driver version. " \
2083                 "Please carefully read all instructions on this website.\n";
2084
2085         if (error)
2086                 b43err(wl, text);
2087         else
2088                 b43warn(wl, text);
2089 }
2090
2091 int b43_do_request_fw(struct b43_request_fw_context *ctx,
2092                       const char *name,
2093                       struct b43_firmware_file *fw)
2094 {
2095         const struct firmware *blob;
2096         struct b43_fw_header *hdr;
2097         u32 size;
2098         int err;
2099
2100         if (!name) {
2101                 /* Don't fetch anything. Free possibly cached firmware. */
2102                 /* FIXME: We should probably keep it anyway, to save some headache
2103                  * on suspend/resume with multiband devices. */
2104                 b43_do_release_fw(fw);
2105                 return 0;
2106         }
2107         if (fw->filename) {
2108                 if ((fw->type == ctx->req_type) &&
2109                     (strcmp(fw->filename, name) == 0))
2110                         return 0; /* Already have this fw. */
2111                 /* Free the cached firmware first. */
2112                 /* FIXME: We should probably do this later after we successfully
2113                  * got the new fw. This could reduce headache with multiband devices.
2114                  * We could also redesign this to cache the firmware for all possible
2115                  * bands all the time. */
2116                 b43_do_release_fw(fw);
2117         }
2118
2119         switch (ctx->req_type) {
2120         case B43_FWTYPE_PROPRIETARY:
2121                 snprintf(ctx->fwname, sizeof(ctx->fwname),
2122                          "b43%s/%s.fw",
2123                          modparam_fwpostfix, name);
2124                 break;
2125         case B43_FWTYPE_OPENSOURCE:
2126                 snprintf(ctx->fwname, sizeof(ctx->fwname),
2127                          "b43-open%s/%s.fw",
2128                          modparam_fwpostfix, name);
2129                 break;
2130         default:
2131                 B43_WARN_ON(1);
2132                 return -ENOSYS;
2133         }
2134         err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
2135         if (err == -ENOENT) {
2136                 snprintf(ctx->errors[ctx->req_type],
2137                          sizeof(ctx->errors[ctx->req_type]),
2138                          "Firmware file \"%s\" not found\n", ctx->fwname);
2139                 return err;
2140         } else if (err) {
2141                 snprintf(ctx->errors[ctx->req_type],
2142                          sizeof(ctx->errors[ctx->req_type]),
2143                          "Firmware file \"%s\" request failed (err=%d)\n",
2144                          ctx->fwname, err);
2145                 return err;
2146         }
2147         if (blob->size < sizeof(struct b43_fw_header))
2148                 goto err_format;
2149         hdr = (struct b43_fw_header *)(blob->data);
2150         switch (hdr->type) {
2151         case B43_FW_TYPE_UCODE:
2152         case B43_FW_TYPE_PCM:
2153                 size = be32_to_cpu(hdr->size);
2154                 if (size != blob->size - sizeof(struct b43_fw_header))
2155                         goto err_format;
2156                 /* fallthrough */
2157         case B43_FW_TYPE_IV:
2158                 if (hdr->ver != 1)
2159                         goto err_format;
2160                 break;
2161         default:
2162                 goto err_format;
2163         }
2164
2165         fw->data = blob;
2166         fw->filename = name;
2167         fw->type = ctx->req_type;
2168
2169         return 0;
2170
2171 err_format:
2172         snprintf(ctx->errors[ctx->req_type],
2173                  sizeof(ctx->errors[ctx->req_type]),
2174                  "Firmware file \"%s\" format error.\n", ctx->fwname);
2175         release_firmware(blob);
2176
2177         return -EPROTO;
2178 }
2179
2180 static int b43_try_request_fw(struct b43_request_fw_context *ctx)
2181 {
2182         struct b43_wldev *dev = ctx->dev;
2183         struct b43_firmware *fw = &ctx->dev->fw;
2184         const u8 rev = ctx->dev->dev->core_rev;
2185         const char *filename;
2186         u32 tmshigh;
2187         int err;
2188
2189         /* Files for HT and LCN were found by trying one by one */
2190
2191         /* Get microcode */
2192         if ((rev >= 5) && (rev <= 10)) {
2193                 filename = "ucode5";
2194         } else if ((rev >= 11) && (rev <= 12)) {
2195                 filename = "ucode11";
2196         } else if (rev == 13) {
2197                 filename = "ucode13";
2198         } else if (rev == 14) {
2199                 filename = "ucode14";
2200         } else if (rev == 15) {
2201                 filename = "ucode15";
2202         } else {
2203                 switch (dev->phy.type) {
2204                 case B43_PHYTYPE_N:
2205                         if (rev >= 16)
2206                                 filename = "ucode16_mimo";
2207                         else
2208                                 goto err_no_ucode;
2209                         break;
2210                 case B43_PHYTYPE_HT:
2211                         if (rev == 29)
2212                                 filename = "ucode29_mimo";
2213                         else
2214                                 goto err_no_ucode;
2215                         break;
2216                 case B43_PHYTYPE_LCN:
2217                         if (rev == 24)
2218                                 filename = "ucode24_mimo";
2219                         else
2220                                 goto err_no_ucode;
2221                         break;
2222                 default:
2223                         goto err_no_ucode;
2224                 }
2225         }
2226         err = b43_do_request_fw(ctx, filename, &fw->ucode);
2227         if (err)
2228                 goto err_load;
2229
2230         /* Get PCM code */
2231         if ((rev >= 5) && (rev <= 10))
2232                 filename = "pcm5";
2233         else if (rev >= 11)
2234                 filename = NULL;
2235         else
2236                 goto err_no_pcm;
2237         fw->pcm_request_failed = false;
2238         err = b43_do_request_fw(ctx, filename, &fw->pcm);
2239         if (err == -ENOENT) {
2240                 /* We did not find a PCM file? Not fatal, but
2241                  * core rev <= 10 must do without hwcrypto then. */
2242                 fw->pcm_request_failed = true;
2243         } else if (err)
2244                 goto err_load;
2245
2246         /* Get initvals */
2247         switch (dev->phy.type) {
2248         case B43_PHYTYPE_A:
2249                 if ((rev >= 5) && (rev <= 10)) {
2250                         tmshigh = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
2251                         if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2252                                 filename = "a0g1initvals5";
2253                         else
2254                                 filename = "a0g0initvals5";
2255                 } else
2256                         goto err_no_initvals;
2257                 break;
2258         case B43_PHYTYPE_G:
2259                 if ((rev >= 5) && (rev <= 10))
2260                         filename = "b0g0initvals5";
2261                 else if (rev >= 13)
2262                         filename = "b0g0initvals13";
2263                 else
2264                         goto err_no_initvals;
2265                 break;
2266         case B43_PHYTYPE_N:
2267                 if (rev >= 16)
2268                         filename = "n0initvals16";
2269                 else if ((rev >= 11) && (rev <= 12))
2270                         filename = "n0initvals11";
2271                 else
2272                         goto err_no_initvals;
2273                 break;
2274         case B43_PHYTYPE_LP:
2275                 if (rev == 13)
2276                         filename = "lp0initvals13";
2277                 else if (rev == 14)
2278                         filename = "lp0initvals14";
2279                 else if (rev >= 15)
2280                         filename = "lp0initvals15";
2281                 else
2282                         goto err_no_initvals;
2283                 break;
2284         case B43_PHYTYPE_HT:
2285                 if (rev == 29)
2286                         filename = "ht0initvals29";
2287                 else
2288                         goto err_no_initvals;
2289                 break;
2290         case B43_PHYTYPE_LCN:
2291                 if (rev == 24)
2292                         filename = "lcn0initvals24";
2293                 else
2294                         goto err_no_initvals;
2295                 break;
2296         default:
2297                 goto err_no_initvals;
2298         }
2299         err = b43_do_request_fw(ctx, filename, &fw->initvals);
2300         if (err)
2301                 goto err_load;
2302
2303         /* Get bandswitch initvals */
2304         switch (dev->phy.type) {
2305         case B43_PHYTYPE_A:
2306                 if ((rev >= 5) && (rev <= 10)) {
2307                         tmshigh = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
2308                         if (tmshigh & B43_TMSHIGH_HAVE_2GHZ_PHY)
2309                                 filename = "a0g1bsinitvals5";
2310                         else
2311                                 filename = "a0g0bsinitvals5";
2312                 } else if (rev >= 11)
2313                         filename = NULL;
2314                 else
2315                         goto err_no_initvals;
2316                 break;
2317         case B43_PHYTYPE_G:
2318                 if ((rev >= 5) && (rev <= 10))
2319                         filename = "b0g0bsinitvals5";
2320                 else if (rev >= 11)
2321                         filename = NULL;
2322                 else
2323                         goto err_no_initvals;
2324                 break;
2325         case B43_PHYTYPE_N:
2326                 if (rev >= 16)
2327                         filename = "n0bsinitvals16";
2328                 else if ((rev >= 11) && (rev <= 12))
2329                         filename = "n0bsinitvals11";
2330                 else
2331                         goto err_no_initvals;
2332                 break;
2333         case B43_PHYTYPE_LP:
2334                 if (rev == 13)
2335                         filename = "lp0bsinitvals13";
2336                 else if (rev == 14)
2337                         filename = "lp0bsinitvals14";
2338                 else if (rev >= 15)
2339                         filename = "lp0bsinitvals15";
2340                 else
2341                         goto err_no_initvals;
2342                 break;
2343         case B43_PHYTYPE_HT:
2344                 if (rev == 29)
2345                         filename = "ht0bsinitvals29";
2346                 else
2347                         goto err_no_initvals;
2348                 break;
2349         case B43_PHYTYPE_LCN:
2350                 if (rev == 24)
2351                         filename = "lcn0bsinitvals24";
2352                 else
2353                         goto err_no_initvals;
2354                 break;
2355         default:
2356                 goto err_no_initvals;
2357         }
2358         err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
2359         if (err)
2360                 goto err_load;
2361
2362         fw->opensource = (ctx->req_type == B43_FWTYPE_OPENSOURCE);
2363
2364         return 0;
2365
2366 err_no_ucode:
2367         err = ctx->fatal_failure = -EOPNOTSUPP;
2368         b43err(dev->wl, "The driver does not know which firmware (ucode) "
2369                "is required for your device (wl-core rev %u)\n", rev);
2370         goto error;
2371
2372 err_no_pcm:
2373         err = ctx->fatal_failure = -EOPNOTSUPP;
2374         b43err(dev->wl, "The driver does not know which firmware (PCM) "
2375                "is required for your device (wl-core rev %u)\n", rev);
2376         goto error;
2377
2378 err_no_initvals:
2379         err = ctx->fatal_failure = -EOPNOTSUPP;
2380         b43err(dev->wl, "The driver does not know which firmware (initvals) "
2381                "is required for your device (wl-core rev %u)\n", rev);
2382         goto error;
2383
2384 err_load:
2385         /* We failed to load this firmware image. The error message
2386          * already is in ctx->errors. Return and let our caller decide
2387          * what to do. */
2388         goto error;
2389
2390 error:
2391         b43_release_firmware(dev);
2392         return err;
2393 }
2394
2395 static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl);
2396 static void b43_one_core_detach(struct b43_bus_dev *dev);
2397
2398 static void b43_request_firmware(struct work_struct *work)
2399 {
2400         struct b43_wl *wl = container_of(work,
2401                             struct b43_wl, firmware_load);
2402         struct b43_wldev *dev = wl->current_dev;
2403         struct b43_request_fw_context *ctx;
2404         unsigned int i;
2405         int err;
2406         const char *errmsg;
2407
2408         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2409         if (!ctx)
2410                 return;
2411         ctx->dev = dev;
2412
2413         ctx->req_type = B43_FWTYPE_PROPRIETARY;
2414         err = b43_try_request_fw(ctx);
2415         if (!err)
2416                 goto start_ieee80211; /* Successfully loaded it. */
2417         /* Was fw version known? */
2418         if (ctx->fatal_failure)
2419                 goto out;
2420
2421         /* proprietary fw not found, try open source */
2422         ctx->req_type = B43_FWTYPE_OPENSOURCE;
2423         err = b43_try_request_fw(ctx);
2424         if (!err)
2425                 goto start_ieee80211; /* Successfully loaded it. */
2426         if(ctx->fatal_failure)
2427                 goto out;
2428
2429         /* Could not find a usable firmware. Print the errors. */
2430         for (i = 0; i < B43_NR_FWTYPES; i++) {
2431                 errmsg = ctx->errors[i];
2432                 if (strlen(errmsg))
2433                         b43err(dev->wl, errmsg);
2434         }
2435         b43_print_fw_helptext(dev->wl, 1);
2436         goto out;
2437
2438 start_ieee80211:
2439         wl->hw->queues = B43_QOS_QUEUE_NUM;
2440         if (!modparam_qos || dev->fw.opensource)
2441                 wl->hw->queues = 1;
2442
2443         err = ieee80211_register_hw(wl->hw);
2444         if (err)
2445                 goto err_one_core_detach;
2446         wl->hw_registred = true;
2447         b43_leds_register(wl->current_dev);
2448         goto out;
2449
2450 err_one_core_detach:
2451         b43_one_core_detach(dev->dev);
2452
2453 out:
2454         kfree(ctx);
2455 }
2456
2457 static int b43_upload_microcode(struct b43_wldev *dev)
2458 {
2459         struct wiphy *wiphy = dev->wl->hw->wiphy;
2460         const size_t hdr_len = sizeof(struct b43_fw_header);
2461         const __be32 *data;
2462         unsigned int i, len;
2463         u16 fwrev, fwpatch, fwdate, fwtime;
2464         u32 tmp, macctl;
2465         int err = 0;
2466
2467         /* Jump the microcode PSM to offset 0 */
2468         macctl = b43_read32(dev, B43_MMIO_MACCTL);
2469         B43_WARN_ON(macctl & B43_MACCTL_PSM_RUN);
2470         macctl |= B43_MACCTL_PSM_JMP0;
2471         b43_write32(dev, B43_MMIO_MACCTL, macctl);
2472         /* Zero out all microcode PSM registers and shared memory. */
2473         for (i = 0; i < 64; i++)
2474                 b43_shm_write16(dev, B43_SHM_SCRATCH, i, 0);
2475         for (i = 0; i < 4096; i += 2)
2476                 b43_shm_write16(dev, B43_SHM_SHARED, i, 0);
2477
2478         /* Upload Microcode. */
2479         data = (__be32 *) (dev->fw.ucode.data->data + hdr_len);
2480         len = (dev->fw.ucode.data->size - hdr_len) / sizeof(__be32);
2481         b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
2482         for (i = 0; i < len; i++) {
2483                 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2484                 udelay(10);
2485         }
2486
2487         if (dev->fw.pcm.data) {
2488                 /* Upload PCM data. */
2489                 data = (__be32 *) (dev->fw.pcm.data->data + hdr_len);
2490                 len = (dev->fw.pcm.data->size - hdr_len) / sizeof(__be32);
2491                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
2492                 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
2493                 /* No need for autoinc bit in SHM_HW */
2494                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
2495                 for (i = 0; i < len; i++) {
2496                         b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
2497                         udelay(10);
2498                 }
2499         }
2500
2501         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
2502
2503         /* Start the microcode PSM */
2504         b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_JMP0,
2505                       B43_MACCTL_PSM_RUN);
2506
2507         /* Wait for the microcode to load and respond */
2508         i = 0;
2509         while (1) {
2510                 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2511                 if (tmp == B43_IRQ_MAC_SUSPENDED)
2512                         break;
2513                 i++;
2514                 if (i >= 20) {
2515                         b43err(dev->wl, "Microcode not responding\n");
2516                         b43_print_fw_helptext(dev->wl, 1);
2517                         err = -ENODEV;
2518                         goto error;
2519                 }
2520                 msleep(50);
2521         }
2522         b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);       /* dummy read */
2523
2524         /* Get and check the revisions. */
2525         fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
2526         fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
2527         fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
2528         fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
2529
2530         if (fwrev <= 0x128) {
2531                 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
2532                        "binary drivers older than version 4.x is unsupported. "
2533                        "You must upgrade your firmware files.\n");
2534                 b43_print_fw_helptext(dev->wl, 1);
2535                 err = -EOPNOTSUPP;
2536                 goto error;
2537         }
2538         dev->fw.rev = fwrev;
2539         dev->fw.patch = fwpatch;
2540         if (dev->fw.rev >= 598)
2541                 dev->fw.hdr_format = B43_FW_HDR_598;
2542         else if (dev->fw.rev >= 410)
2543                 dev->fw.hdr_format = B43_FW_HDR_410;
2544         else
2545                 dev->fw.hdr_format = B43_FW_HDR_351;
2546         WARN_ON(dev->fw.opensource != (fwdate == 0xFFFF));
2547
2548         dev->qos_enabled = dev->wl->hw->queues > 1;
2549         /* Default to firmware/hardware crypto acceleration. */
2550         dev->hwcrypto_enabled = true;
2551
2552         if (dev->fw.opensource) {
2553                 u16 fwcapa;
2554
2555                 /* Patchlevel info is encoded in the "time" field. */
2556                 dev->fw.patch = fwtime;
2557                 b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
2558                         dev->fw.rev, dev->fw.patch);
2559
2560                 fwcapa = b43_fwcapa_read(dev);
2561                 if (!(fwcapa & B43_FWCAPA_HWCRYPTO) || dev->fw.pcm_request_failed) {
2562                         b43info(dev->wl, "Hardware crypto acceleration not supported by firmware\n");
2563                         /* Disable hardware crypto and fall back to software crypto. */
2564                         dev->hwcrypto_enabled = false;
2565                 }
2566                 /* adding QoS support should use an offline discovery mechanism */
2567                 WARN(fwcapa & B43_FWCAPA_QOS, "QoS in OpenFW not supported\n");
2568         } else {
2569                 b43info(dev->wl, "Loading firmware version %u.%u "
2570                         "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
2571                         fwrev, fwpatch,
2572                         (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
2573                         (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
2574                 if (dev->fw.pcm_request_failed) {
2575                         b43warn(dev->wl, "No \"pcm5.fw\" firmware file found. "
2576                                 "Hardware accelerated cryptography is disabled.\n");
2577                         b43_print_fw_helptext(dev->wl, 0);
2578                 }
2579         }
2580
2581         snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u",
2582                         dev->fw.rev, dev->fw.patch);
2583         wiphy->hw_version = dev->dev->core_id;
2584
2585         if (dev->fw.hdr_format == B43_FW_HDR_351) {
2586                 /* We're over the deadline, but we keep support for old fw
2587                  * until it turns out to be in major conflict with something new. */
2588                 b43warn(dev->wl, "You are using an old firmware image. "
2589                         "Support for old firmware will be removed soon "
2590                         "(official deadline was July 2008).\n");
2591                 b43_print_fw_helptext(dev->wl, 0);
2592         }
2593
2594         return 0;
2595
2596 error:
2597         /* Stop the microcode PSM. */
2598         b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
2599                       B43_MACCTL_PSM_JMP0);
2600
2601         return err;
2602 }
2603
2604 static int b43_write_initvals(struct b43_wldev *dev,
2605                               const struct b43_iv *ivals,
2606                               size_t count,
2607                               size_t array_size)
2608 {
2609         const struct b43_iv *iv;
2610         u16 offset;
2611         size_t i;
2612         bool bit32;
2613
2614         BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
2615         iv = ivals;
2616         for (i = 0; i < count; i++) {
2617                 if (array_size < sizeof(iv->offset_size))
2618                         goto err_format;
2619                 array_size -= sizeof(iv->offset_size);
2620                 offset = be16_to_cpu(iv->offset_size);
2621                 bit32 = !!(offset & B43_IV_32BIT);
2622                 offset &= B43_IV_OFFSET_MASK;
2623                 if (offset >= 0x1000)
2624                         goto err_format;
2625                 if (bit32) {
2626                         u32 value;
2627
2628                         if (array_size < sizeof(iv->data.d32))
2629                                 goto err_format;
2630                         array_size -= sizeof(iv->data.d32);
2631
2632                         value = get_unaligned_be32(&iv->data.d32);
2633                         b43_write32(dev, offset, value);
2634
2635                         iv = (const struct b43_iv *)((const uint8_t *)iv +
2636                                                         sizeof(__be16) +
2637                                                         sizeof(__be32));
2638                 } else {
2639                         u16 value;
2640
2641                         if (array_size < sizeof(iv->data.d16))
2642                                 goto err_format;
2643                         array_size -= sizeof(iv->data.d16);
2644
2645                         value = be16_to_cpu(iv->data.d16);
2646                         b43_write16(dev, offset, value);
2647
2648                         iv = (const struct b43_iv *)((const uint8_t *)iv +
2649                                                         sizeof(__be16) +
2650                                                         sizeof(__be16));
2651                 }
2652         }
2653         if (array_size)
2654                 goto err_format;
2655
2656         return 0;
2657
2658 err_format:
2659         b43err(dev->wl, "Initial Values Firmware file-format error.\n");
2660         b43_print_fw_helptext(dev->wl, 1);
2661
2662         return -EPROTO;
2663 }
2664
2665 static int b43_upload_initvals(struct b43_wldev *dev)
2666 {
2667         const size_t hdr_len = sizeof(struct b43_fw_header);
2668         const struct b43_fw_header *hdr;
2669         struct b43_firmware *fw = &dev->fw;
2670         const struct b43_iv *ivals;
2671         size_t count;
2672         int err;
2673
2674         hdr = (const struct b43_fw_header *)(fw->initvals.data->data);
2675         ivals = (const struct b43_iv *)(fw->initvals.data->data + hdr_len);
2676         count = be32_to_cpu(hdr->size);
2677         err = b43_write_initvals(dev, ivals, count,
2678                                  fw->initvals.data->size - hdr_len);
2679         if (err)
2680                 goto out;
2681         if (fw->initvals_band.data) {
2682                 hdr = (const struct b43_fw_header *)(fw->initvals_band.data->data);
2683                 ivals = (const struct b43_iv *)(fw->initvals_band.data->data + hdr_len);
2684                 count = be32_to_cpu(hdr->size);
2685                 err = b43_write_initvals(dev, ivals, count,
2686                                          fw->initvals_band.data->size - hdr_len);
2687                 if (err)
2688                         goto out;
2689         }
2690 out:
2691
2692         return err;
2693 }
2694
2695 /* Initialize the GPIOs
2696  * http://bcm-specs.sipsolutions.net/GPIO
2697  */
2698 static struct ssb_device *b43_ssb_gpio_dev(struct b43_wldev *dev)
2699 {
2700         struct ssb_bus *bus = dev->dev->sdev->bus;
2701
2702 #ifdef CONFIG_SSB_DRIVER_PCICORE
2703         return (bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev);
2704 #else
2705         return bus->chipco.dev;
2706 #endif
2707 }
2708
2709 static int b43_gpio_init(struct b43_wldev *dev)
2710 {
2711         struct ssb_device *gpiodev;
2712         u32 mask, set;
2713
2714         b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_GPOUTSMSK, 0);
2715         b43_maskset16(dev, B43_MMIO_GPIO_MASK, ~0, 0xF);
2716
2717         mask = 0x0000001F;
2718         set = 0x0000000F;
2719         if (dev->dev->chip_id == 0x4301) {
2720                 mask |= 0x0060;
2721                 set |= 0x0060;
2722         } else if (dev->dev->chip_id == 0x5354) {
2723                 /* Don't allow overtaking buttons GPIOs */
2724                 set &= 0x2; /* 0x2 is LED GPIO on BCM5354 */
2725         }
2726
2727         if (0 /* FIXME: conditional unknown */ ) {
2728                 b43_write16(dev, B43_MMIO_GPIO_MASK,
2729                             b43_read16(dev, B43_MMIO_GPIO_MASK)
2730                             | 0x0100);
2731                 /* BT Coexistance Input */
2732                 mask |= 0x0080;
2733                 set |= 0x0080;
2734                 /* BT Coexistance Out */
2735                 mask |= 0x0100;
2736                 set |= 0x0100;
2737         }
2738         if (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL) {
2739                 /* PA is controlled by gpio 9, let ucode handle it */
2740                 b43_write16(dev, B43_MMIO_GPIO_MASK,
2741                             b43_read16(dev, B43_MMIO_GPIO_MASK)
2742                             | 0x0200);
2743                 mask |= 0x0200;
2744                 set |= 0x0200;
2745         }
2746
2747         switch (dev->dev->bus_type) {
2748 #ifdef CONFIG_B43_BCMA
2749         case B43_BUS_BCMA:
2750                 bcma_cc_write32(&dev->dev->bdev->bus->drv_cc, BCMA_CC_GPIOCTL,
2751                                 (bcma_cc_read32(&dev->dev->bdev->bus->drv_cc,
2752                                         BCMA_CC_GPIOCTL) & ~mask) | set);
2753                 break;
2754 #endif
2755 #ifdef CONFIG_B43_SSB
2756         case B43_BUS_SSB:
2757                 gpiodev = b43_ssb_gpio_dev(dev);
2758                 if (gpiodev)
2759                         ssb_write32(gpiodev, B43_GPIO_CONTROL,
2760                                     (ssb_read32(gpiodev, B43_GPIO_CONTROL)
2761                                     & ~mask) | set);
2762                 break;
2763 #endif
2764         }
2765
2766         return 0;
2767 }
2768
2769 /* Turn off all GPIO stuff. Call this on module unload, for example. */
2770 static void b43_gpio_cleanup(struct b43_wldev *dev)
2771 {
2772         struct ssb_device *gpiodev;
2773
2774         switch (dev->dev->bus_type) {
2775 #ifdef CONFIG_B43_BCMA
2776         case B43_BUS_BCMA:
2777                 bcma_cc_write32(&dev->dev->bdev->bus->drv_cc, BCMA_CC_GPIOCTL,
2778                                 0);
2779                 break;
2780 #endif
2781 #ifdef CONFIG_B43_SSB
2782         case B43_BUS_SSB:
2783                 gpiodev = b43_ssb_gpio_dev(dev);
2784                 if (gpiodev)
2785                         ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
2786                 break;
2787 #endif
2788         }
2789 }
2790
2791 /* http://bcm-specs.sipsolutions.net/EnableMac */
2792 void b43_mac_enable(struct b43_wldev *dev)
2793 {
2794         if (b43_debug(dev, B43_DBG_FIRMWARE)) {
2795                 u16 fwstate;
2796
2797                 fwstate = b43_shm_read16(dev, B43_SHM_SHARED,
2798                                          B43_SHM_SH_UCODESTAT);
2799                 if ((fwstate != B43_SHM_SH_UCODESTAT_SUSP) &&
2800                     (fwstate != B43_SHM_SH_UCODESTAT_SLEEP)) {
2801                         b43err(dev->wl, "b43_mac_enable(): The firmware "
2802                                "should be suspended, but current state is %u\n",
2803                                fwstate);
2804                 }
2805         }
2806
2807         dev->mac_suspended--;
2808         B43_WARN_ON(dev->mac_suspended < 0);
2809         if (dev->mac_suspended == 0) {
2810                 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_ENABLED);
2811                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
2812                             B43_IRQ_MAC_SUSPENDED);
2813                 /* Commit writes */
2814                 b43_read32(dev, B43_MMIO_MACCTL);
2815                 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2816                 b43_power_saving_ctl_bits(dev, 0);
2817         }
2818 }
2819
2820 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
2821 void b43_mac_suspend(struct b43_wldev *dev)
2822 {
2823         int i;
2824         u32 tmp;
2825
2826         might_sleep();
2827         B43_WARN_ON(dev->mac_suspended < 0);
2828
2829         if (dev->mac_suspended == 0) {
2830                 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2831                 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_ENABLED, 0);
2832                 /* force pci to flush the write */
2833                 b43_read32(dev, B43_MMIO_MACCTL);
2834                 for (i = 35; i; i--) {
2835                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2836                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2837                                 goto out;
2838                         udelay(10);
2839                 }
2840                 /* Hm, it seems this will take some time. Use msleep(). */
2841                 for (i = 40; i; i--) {
2842                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2843                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2844                                 goto out;
2845                         msleep(1);
2846                 }
2847                 b43err(dev->wl, "MAC suspend failed\n");
2848         }
2849 out:
2850         dev->mac_suspended++;
2851 }
2852
2853 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
2854 void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
2855 {
2856         u32 tmp;
2857
2858         switch (dev->dev->bus_type) {
2859 #ifdef CONFIG_B43_BCMA
2860         case B43_BUS_BCMA:
2861                 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
2862                 if (on)
2863                         tmp |= B43_BCMA_IOCTL_MACPHYCLKEN;
2864                 else
2865                         tmp &= ~B43_BCMA_IOCTL_MACPHYCLKEN;
2866                 bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
2867                 break;
2868 #endif
2869 #ifdef CONFIG_B43_SSB
2870         case B43_BUS_SSB:
2871                 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
2872                 if (on)
2873                         tmp |= B43_TMSLOW_MACPHYCLKEN;
2874                 else
2875                         tmp &= ~B43_TMSLOW_MACPHYCLKEN;
2876                 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
2877                 break;
2878 #endif
2879         }
2880 }
2881
2882 static void b43_adjust_opmode(struct b43_wldev *dev)
2883 {
2884         struct b43_wl *wl = dev->wl;
2885         u32 ctl;
2886         u16 cfp_pretbtt;
2887
2888         ctl = b43_read32(dev, B43_MMIO_MACCTL);
2889         /* Reset status to STA infrastructure mode. */
2890         ctl &= ~B43_MACCTL_AP;
2891         ctl &= ~B43_MACCTL_KEEP_CTL;
2892         ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2893         ctl &= ~B43_MACCTL_KEEP_BAD;
2894         ctl &= ~B43_MACCTL_PROMISC;
2895         ctl &= ~B43_MACCTL_BEACPROMISC;
2896         ctl |= B43_MACCTL_INFRA;
2897
2898         if (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
2899             b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT))
2900                 ctl |= B43_MACCTL_AP;
2901         else if (b43_is_mode(wl, NL80211_IFTYPE_ADHOC))
2902                 ctl &= ~B43_MACCTL_INFRA;
2903
2904         if (wl->filter_flags & FIF_CONTROL)
2905                 ctl |= B43_MACCTL_KEEP_CTL;
2906         if (wl->filter_flags & FIF_FCSFAIL)
2907                 ctl |= B43_MACCTL_KEEP_BAD;
2908         if (wl->filter_flags & FIF_PLCPFAIL)
2909                 ctl |= B43_MACCTL_KEEP_BADPLCP;
2910         if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2911                 ctl |= B43_MACCTL_PROMISC;
2912         if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2913                 ctl |= B43_MACCTL_BEACPROMISC;
2914
2915         /* Workaround: On old hardware the HW-MAC-address-filter
2916          * doesn't work properly, so always run promisc in filter
2917          * it in software. */
2918         if (dev->dev->core_rev <= 4)
2919                 ctl |= B43_MACCTL_PROMISC;
2920
2921         b43_write32(dev, B43_MMIO_MACCTL, ctl);
2922
2923         cfp_pretbtt = 2;
2924         if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2925                 if (dev->dev->chip_id == 0x4306 &&
2926                     dev->dev->chip_rev == 3)
2927                         cfp_pretbtt = 100;
2928                 else
2929                         cfp_pretbtt = 50;
2930         }
2931         b43_write16(dev, 0x612, cfp_pretbtt);
2932
2933         /* FIXME: We don't currently implement the PMQ mechanism,
2934          *        so always disable it. If we want to implement PMQ,
2935          *        we need to enable it here (clear DISCPMQ) in AP mode.
2936          */
2937         if (0  /* ctl & B43_MACCTL_AP */)
2938                 b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_DISCPMQ, 0);
2939         else
2940                 b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_DISCPMQ);
2941 }
2942
2943 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2944 {
2945         u16 offset;
2946
2947         if (is_ofdm) {
2948                 offset = 0x480;
2949                 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2950         } else {
2951                 offset = 0x4C0;
2952                 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2953         }
2954         b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2955                         b43_shm_read16(dev, B43_SHM_SHARED, offset));
2956 }
2957
2958 static void b43_rate_memory_init(struct b43_wldev *dev)
2959 {
2960         switch (dev->phy.type) {
2961         case B43_PHYTYPE_A:
2962         case B43_PHYTYPE_G:
2963         case B43_PHYTYPE_N:
2964         case B43_PHYTYPE_LP:
2965         case B43_PHYTYPE_HT:
2966         case B43_PHYTYPE_LCN:
2967                 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2968                 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2969                 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2970                 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2971                 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2972                 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2973                 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2974                 if (dev->phy.type == B43_PHYTYPE_A)
2975                         break;
2976                 /* fallthrough */
2977         case B43_PHYTYPE_B:
2978                 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2979                 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2980                 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2981                 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2982                 break;
2983         default:
2984                 B43_WARN_ON(1);
2985         }
2986 }
2987
2988 /* Set the default values for the PHY TX Control Words. */
2989 static void b43_set_phytxctl_defaults(struct b43_wldev *dev)
2990 {
2991         u16 ctl = 0;
2992
2993         ctl |= B43_TXH_PHY_ENC_CCK;
2994         ctl |= B43_TXH_PHY_ANT01AUTO;
2995         ctl |= B43_TXH_PHY_TXPWR;
2996
2997         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, ctl);
2998         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, ctl);
2999         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, ctl);
3000 }
3001
3002 /* Set the TX-Antenna for management frames sent by firmware. */
3003 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
3004 {
3005         u16 ant;
3006         u16 tmp;
3007
3008         ant = b43_antenna_to_phyctl(antenna);
3009
3010         /* For ACK/CTS */
3011         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
3012         tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
3013         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
3014         /* For Probe Resposes */
3015         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
3016         tmp = (tmp & ~B43_TXH_PHY_ANT) | ant;
3017         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
3018 }
3019
3020 /* This is the opposite of b43_chip_init() */
3021 static void b43_chip_exit(struct b43_wldev *dev)
3022 {
3023         b43_phy_exit(dev);
3024         b43_gpio_cleanup(dev);
3025         /* firmware is released later */
3026 }
3027
3028 /* Initialize the chip
3029  * http://bcm-specs.sipsolutions.net/ChipInit
3030  */
3031 static int b43_chip_init(struct b43_wldev *dev)
3032 {
3033         struct b43_phy *phy = &dev->phy;
3034         int err;
3035         u32 macctl;
3036         u16 value16;
3037
3038         /* Initialize the MAC control */
3039         macctl = B43_MACCTL_IHR_ENABLED | B43_MACCTL_SHM_ENABLED;
3040         if (dev->phy.gmode)
3041                 macctl |= B43_MACCTL_GMODE;
3042         macctl |= B43_MACCTL_INFRA;
3043         b43_write32(dev, B43_MMIO_MACCTL, macctl);
3044
3045         err = b43_upload_microcode(dev);
3046         if (err)
3047                 goto out;       /* firmware is released later */
3048
3049         err = b43_gpio_init(dev);
3050         if (err)
3051                 goto out;       /* firmware is released later */
3052
3053         err = b43_upload_initvals(dev);
3054         if (err)
3055                 goto err_gpio_clean;
3056
3057         /* Turn the Analog on and initialize the PHY. */
3058         phy->ops->switch_analog(dev, 1);
3059         err = b43_phy_init(dev);
3060         if (err)
3061                 goto err_gpio_clean;
3062
3063         /* Disable Interference Mitigation. */
3064         if (phy->ops->interf_mitigation)
3065                 phy->ops->interf_mitigation(dev, B43_INTERFMODE_NONE);
3066
3067         /* Select the antennae */
3068         if (phy->ops->set_rx_antenna)
3069                 phy->ops->set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
3070         b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
3071
3072         if (phy->type == B43_PHYTYPE_B) {
3073                 value16 = b43_read16(dev, 0x005E);
3074                 value16 |= 0x0004;
3075                 b43_write16(dev, 0x005E, value16);
3076         }
3077         b43_write32(dev, 0x0100, 0x01000000);
3078         if (dev->dev->core_rev < 5)
3079                 b43_write32(dev, 0x010C, 0x01000000);
3080
3081         b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_INFRA, 0);
3082         b43_maskset32(dev, B43_MMIO_MACCTL, ~0, B43_MACCTL_INFRA);
3083
3084         /* Probe Response Timeout value */
3085         /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
3086         b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
3087
3088         /* Initially set the wireless operation mode. */
3089         b43_adjust_opmode(dev);
3090
3091         if (dev->dev->core_rev < 3) {
3092                 b43_write16(dev, 0x060E, 0x0000);
3093                 b43_write16(dev, 0x0610, 0x8000);
3094                 b43_write16(dev, 0x0604, 0x0000);
3095                 b43_write16(dev, 0x0606, 0x0200);
3096         } else {
3097                 b43_write32(dev, 0x0188, 0x80000000);
3098                 b43_write32(dev, 0x018C, 0x02000000);
3099         }
3100         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
3101         b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
3102         b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
3103         b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
3104         b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
3105         b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
3106         b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
3107
3108         b43_mac_phy_clock_set(dev, true);
3109
3110         switch (dev->dev->bus_type) {
3111 #ifdef CONFIG_B43_BCMA
3112         case B43_BUS_BCMA:
3113                 /* FIXME: 0xE74 is quite common, but should be read from CC */
3114                 b43_write16(dev, B43_MMIO_POWERUP_DELAY, 0xE74);
3115                 break;
3116 #endif
3117 #ifdef CONFIG_B43_SSB
3118         case B43_BUS_SSB:
3119                 b43_write16(dev, B43_MMIO_POWERUP_DELAY,
3120                             dev->dev->sdev->bus->chipco.fast_pwrup_delay);
3121                 break;
3122 #endif
3123         }
3124
3125         err = 0;
3126         b43dbg(dev->wl, "Chip initialized\n");
3127 out:
3128         return err;
3129
3130 err_gpio_clean:
3131         b43_gpio_cleanup(dev);
3132         return err;
3133 }
3134
3135 static void b43_periodic_every60sec(struct b43_wldev *dev)
3136 {
3137         const struct b43_phy_operations *ops = dev->phy.ops;
3138
3139         if (ops->pwork_60sec)
3140                 ops->pwork_60sec(dev);
3141
3142         /* Force check the TX power emission now. */
3143         b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME);
3144 }
3145
3146 static void b43_periodic_every30sec(struct b43_wldev *dev)
3147 {
3148         /* Update device statistics. */
3149         b43_calculate_link_quality(dev);
3150 }
3151
3152 static void b43_periodic_every15sec(struct b43_wldev *dev)
3153 {
3154         struct b43_phy *phy = &dev->phy;
3155         u16 wdr;
3156
3157         if (dev->fw.opensource) {
3158                 /* Check if the firmware is still alive.
3159                  * It will reset the watchdog counter to 0 in its idle loop. */
3160                 wdr = b43_shm_read16(dev, B43_SHM_SCRATCH, B43_WATCHDOG_REG);
3161                 if (unlikely(wdr)) {
3162                         b43err(dev->wl, "Firmware watchdog: The firmware died!\n");
3163                         b43_controller_restart(dev, "Firmware watchdog");
3164                         return;
3165                 } else {
3166                         b43_shm_write16(dev, B43_SHM_SCRATCH,
3167                                         B43_WATCHDOG_REG, 1);
3168                 }
3169         }
3170
3171         if (phy->ops->pwork_15sec)
3172                 phy->ops->pwork_15sec(dev);
3173
3174         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3175         wmb();
3176
3177 #if B43_DEBUG
3178         if (b43_debug(dev, B43_DBG_VERBOSESTATS)) {
3179                 unsigned int i;
3180
3181                 b43dbg(dev->wl, "Stats: %7u IRQs/sec, %7u TX/sec, %7u RX/sec\n",
3182                        dev->irq_count / 15,
3183                        dev->tx_count / 15,
3184                        dev->rx_count / 15);
3185                 dev->irq_count = 0;
3186                 dev->tx_count = 0;
3187                 dev->rx_count = 0;
3188                 for (i = 0; i < ARRAY_SIZE(dev->irq_bit_count); i++) {
3189                         if (dev->irq_bit_count[i]) {
3190                                 b43dbg(dev->wl, "Stats: %7u IRQ-%02u/sec (0x%08X)\n",
3191                                        dev->irq_bit_count[i] / 15, i, (1 << i));
3192                                 dev->irq_bit_count[i] = 0;
3193                         }
3194                 }
3195         }
3196 #endif
3197 }
3198
3199 static void do_periodic_work(struct b43_wldev *dev)
3200 {
3201         unsigned int state;
3202
3203         state = dev->periodic_state;
3204         if (state % 4 == 0)
3205                 b43_periodic_every60sec(dev);
3206         if (state % 2 == 0)
3207                 b43_periodic_every30sec(dev);
3208         b43_periodic_every15sec(dev);
3209 }
3210
3211 /* Periodic work locking policy:
3212  *      The whole periodic work handler is protected by
3213  *      wl->mutex. If another lock is needed somewhere in the
3214  *      pwork callchain, it's acquired in-place, where it's needed.
3215  */
3216 static void b43_periodic_work_handler(struct work_struct *work)
3217 {
3218         struct b43_wldev *dev = container_of(work, struct b43_wldev,
3219                                              periodic_work.work);
3220         struct b43_wl *wl = dev->wl;
3221         unsigned long delay;
3222
3223         mutex_lock(&wl->mutex);
3224
3225         if (unlikely(b43_status(dev) != B43_STAT_STARTED))
3226                 goto out;
3227         if (b43_debug(dev, B43_DBG_PWORK_STOP))
3228                 goto out_requeue;
3229
3230         do_periodic_work(dev);
3231
3232         dev->periodic_state++;
3233 out_requeue:
3234         if (b43_debug(dev, B43_DBG_PWORK_FAST))
3235                 delay = msecs_to_jiffies(50);
3236         else
3237                 delay = round_jiffies_relative(HZ * 15);
3238         ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay);
3239 out:
3240         mutex_unlock(&wl->mutex);
3241 }
3242
3243 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
3244 {
3245         struct delayed_work *work = &dev->periodic_work;
3246
3247         dev->periodic_state = 0;
3248         INIT_DELAYED_WORK(work, b43_periodic_work_handler);
3249         ieee80211_queue_delayed_work(dev->wl->hw, work, 0);
3250 }
3251
3252 /* Check if communication with the device works correctly. */
3253 static int b43_validate_chipaccess(struct b43_wldev *dev)
3254 {
3255         u32 v, backup0, backup4;
3256
3257         backup0 = b43_shm_read32(dev, B43_SHM_SHARED, 0);
3258         backup4 = b43_shm_read32(dev, B43_SHM_SHARED, 4);
3259
3260         /* Check for read/write and endianness problems. */
3261         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
3262         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
3263                 goto error;
3264         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
3265         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
3266                 goto error;
3267
3268         /* Check if unaligned 32bit SHM_SHARED access works properly.
3269          * However, don't bail out on failure, because it's noncritical. */
3270         b43_shm_write16(dev, B43_SHM_SHARED, 0, 0x1122);
3271         b43_shm_write16(dev, B43_SHM_SHARED, 2, 0x3344);
3272         b43_shm_write16(dev, B43_SHM_SHARED, 4, 0x5566);
3273         b43_shm_write16(dev, B43_SHM_SHARED, 6, 0x7788);
3274         if (b43_shm_read32(dev, B43_SHM_SHARED, 2) != 0x55663344)
3275                 b43warn(dev->wl, "Unaligned 32bit SHM read access is broken\n");
3276         b43_shm_write32(dev, B43_SHM_SHARED, 2, 0xAABBCCDD);
3277         if (b43_shm_read16(dev, B43_SHM_SHARED, 0) != 0x1122 ||
3278             b43_shm_read16(dev, B43_SHM_SHARED, 2) != 0xCCDD ||
3279             b43_shm_read16(dev, B43_SHM_SHARED, 4) != 0xAABB ||
3280             b43_shm_read16(dev, B43_SHM_SHARED, 6) != 0x7788)
3281                 b43warn(dev->wl, "Unaligned 32bit SHM write access is broken\n");
3282
3283         b43_shm_write32(dev, B43_SHM_SHARED, 0, backup0);
3284         b43_shm_write32(dev, B43_SHM_SHARED, 4, backup4);
3285
3286         if ((dev->dev->core_rev >= 3) && (dev->dev->core_rev <= 10)) {
3287                 /* The 32bit register shadows the two 16bit registers
3288                  * with update sideeffects. Validate this. */
3289                 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
3290                 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
3291                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
3292                         goto error;
3293                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
3294                         goto error;
3295         }
3296         b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
3297
3298         v = b43_read32(dev, B43_MMIO_MACCTL);
3299         v |= B43_MACCTL_GMODE;
3300         if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
3301                 goto error;
3302
3303         return 0;
3304 error:
3305         b43err(dev->wl, "Failed to validate the chipaccess\n");
3306         return -ENODEV;
3307 }
3308
3309 static void b43_security_init(struct b43_wldev *dev)
3310 {
3311         dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
3312         /* KTP is a word address, but we address SHM bytewise.
3313          * So multiply by two.
3314          */
3315         dev->ktp *= 2;
3316         /* Number of RCMTA address slots */
3317         b43_write16(dev, B43_MMIO_RCMTA_COUNT, B43_NR_PAIRWISE_KEYS);
3318         /* Clear the key memory. */
3319         b43_clear_keys(dev);
3320 }
3321
3322 #ifdef CONFIG_B43_HWRNG
3323 static int b43_rng_read(struct hwrng *rng, u32 *data)
3324 {
3325         struct b43_wl *wl = (struct b43_wl *)rng->priv;
3326         struct b43_wldev *dev;
3327         int count = -ENODEV;
3328
3329         mutex_lock(&wl->mutex);
3330         dev = wl->current_dev;
3331         if (likely(dev && b43_status(dev) >= B43_STAT_INITIALIZED)) {
3332                 *data = b43_read16(dev, B43_MMIO_RNG);
3333                 count = sizeof(u16);
3334         }
3335         mutex_unlock(&wl->mutex);
3336
3337         return count;
3338 }
3339 #endif /* CONFIG_B43_HWRNG */
3340
3341 static void b43_rng_exit(struct b43_wl *wl)
3342 {
3343 #ifdef CONFIG_B43_HWRNG
3344         if (wl->rng_initialized)
3345                 hwrng_unregister(&wl->rng);
3346 #endif /* CONFIG_B43_HWRNG */
3347 }
3348
3349 static int b43_rng_init(struct b43_wl *wl)
3350 {
3351         int err = 0;
3352
3353 #ifdef CONFIG_B43_HWRNG
3354         snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
3355                  "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
3356         wl->rng.name = wl->rng_name;
3357         wl->rng.data_read = b43_rng_read;
3358         wl->rng.priv = (unsigned long)wl;
3359         wl->rng_initialized = true;
3360         err = hwrng_register(&wl->rng);
3361         if (err) {
3362                 wl->rng_initialized = false;
3363                 b43err(wl, "Failed to register the random "
3364                        "number generator (%d)\n", err);
3365         }
3366 #endif /* CONFIG_B43_HWRNG */
3367
3368         return err;
3369 }
3370
3371 static void b43_tx_work(struct work_struct *work)
3372 {
3373         struct b43_wl *wl = container_of(work, struct b43_wl, tx_work);
3374         struct b43_wldev *dev;
3375         struct sk_buff *skb;
3376         int queue_num;
3377         int err = 0;
3378
3379         mutex_lock(&wl->mutex);
3380         dev = wl->current_dev;
3381         if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) {
3382                 mutex_unlock(&wl->mutex);
3383                 return;
3384         }
3385
3386         for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
3387                 while (skb_queue_len(&wl->tx_queue[queue_num])) {
3388                         skb = skb_dequeue(&wl->tx_queue[queue_num]);
3389                         if (b43_using_pio_transfers(dev))
3390                                 err = b43_pio_tx(dev, skb);
3391                         else
3392                                 err = b43_dma_tx(dev, skb);
3393                         if (err == -ENOSPC) {
3394                                 wl->tx_queue_stopped[queue_num] = 1;
3395                                 ieee80211_stop_queue(wl->hw, queue_num);
3396                                 skb_queue_head(&wl->tx_queue[queue_num], skb);
3397                                 break;
3398                         }
3399                         if (unlikely(err))
3400                                 dev_kfree_skb(skb); /* Drop it */
3401                         err = 0;
3402                 }
3403
3404                 if (!err)
3405                         wl->tx_queue_stopped[queue_num] = 0;
3406         }
3407
3408 #if B43_DEBUG
3409         dev->tx_count++;
3410 #endif
3411         mutex_unlock(&wl->mutex);
3412 }
3413
3414 static void b43_op_tx(struct ieee80211_hw *hw,
3415                      struct sk_buff *skb)
3416 {
3417         struct b43_wl *wl = hw_to_b43_wl(hw);
3418
3419         if (unlikely(skb->len < 2 + 2 + 6)) {
3420                 /* Too short, this can't be a valid frame. */
3421                 dev_kfree_skb_any(skb);
3422                 return;
3423         }
3424         B43_WARN_ON(skb_shinfo(skb)->nr_frags);
3425
3426         skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
3427         if (!wl->tx_queue_stopped[skb->queue_mapping]) {
3428                 ieee80211_queue_work(wl->hw, &wl->tx_work);
3429         } else {
3430                 ieee80211_stop_queue(wl->hw, skb->queue_mapping);
3431         }
3432 }
3433
3434 static void b43_qos_params_upload(struct b43_wldev *dev,
3435                                   const struct ieee80211_tx_queue_params *p,
3436                                   u16 shm_offset)
3437 {
3438         u16 params[B43_NR_QOSPARAMS];
3439         int bslots, tmp;
3440         unsigned int i;
3441
3442         if (!dev->qos_enabled)
3443                 return;
3444
3445         bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
3446
3447         memset(&params, 0, sizeof(params));
3448
3449         params[B43_QOSPARAM_TXOP] = p->txop * 32;
3450         params[B43_QOSPARAM_CWMIN] = p->cw_min;
3451         params[B43_QOSPARAM_CWMAX] = p->cw_max;
3452         params[B43_QOSPARAM_CWCUR] = p->cw_min;
3453         params[B43_QOSPARAM_AIFS] = p->aifs;
3454         params[B43_QOSPARAM_BSLOTS] = bslots;
3455         params[B43_QOSPARAM_REGGAP] = bslots + p->aifs;
3456
3457         for (i = 0; i < ARRAY_SIZE(params); i++) {
3458                 if (i == B43_QOSPARAM_STATUS) {
3459                         tmp = b43_shm_read16(dev, B43_SHM_SHARED,
3460                                              shm_offset + (i * 2));
3461                         /* Mark the parameters as updated. */
3462                         tmp |= 0x100;
3463                         b43_shm_write16(dev, B43_SHM_SHARED,
3464                                         shm_offset + (i * 2),
3465                                         tmp);
3466                 } else {
3467                         b43_shm_write16(dev, B43_SHM_SHARED,
3468                                         shm_offset + (i * 2),
3469                                         params[i]);
3470                 }
3471         }
3472 }
3473
3474 /* Mapping of mac80211 queue numbers to b43 QoS SHM offsets. */
3475 static const u16 b43_qos_shm_offsets[] = {
3476         /* [mac80211-queue-nr] = SHM_OFFSET, */
3477         [0] = B43_QOS_VOICE,
3478         [1] = B43_QOS_VIDEO,
3479         [2] = B43_QOS_BESTEFFORT,
3480         [3] = B43_QOS_BACKGROUND,
3481 };
3482
3483 /* Update all QOS parameters in hardware. */
3484 static void b43_qos_upload_all(struct b43_wldev *dev)
3485 {
3486         struct b43_wl *wl = dev->wl;
3487         struct b43_qos_params *params;
3488         unsigned int i;
3489
3490         if (!dev->qos_enabled)
3491                 return;
3492
3493         BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3494                      ARRAY_SIZE(wl->qos_params));
3495
3496         b43_mac_suspend(dev);
3497         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3498                 params = &(wl->qos_params[i]);
3499                 b43_qos_params_upload(dev, &(params->p),
3500                                       b43_qos_shm_offsets[i]);
3501         }
3502         b43_mac_enable(dev);
3503 }
3504
3505 static void b43_qos_clear(struct b43_wl *wl)
3506 {
3507         struct b43_qos_params *params;
3508         unsigned int i;
3509
3510         /* Initialize QoS parameters to sane defaults. */
3511
3512         BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3513                      ARRAY_SIZE(wl->qos_params));
3514
3515         for (i = 0; i < ARRAY_SIZE(wl->qos_params); i++) {
3516                 params = &(wl->qos_params[i]);
3517
3518                 switch (b43_qos_shm_offsets[i]) {
3519                 case B43_QOS_VOICE:
3520                         params->p.txop = 0;
3521                         params->p.aifs = 2;
3522                         params->p.cw_min = 0x0001;
3523                         params->p.cw_max = 0x0001;
3524                         break;
3525                 case B43_QOS_VIDEO:
3526                         params->p.txop = 0;
3527                         params->p.aifs = 2;
3528                         params->p.cw_min = 0x0001;
3529                         params->p.cw_max = 0x0001;
3530                         break;
3531                 case B43_QOS_BESTEFFORT:
3532                         params->p.txop = 0;
3533                         params->p.aifs = 3;
3534                         params->p.cw_min = 0x0001;
3535                         params->p.cw_max = 0x03FF;
3536                         break;
3537                 case B43_QOS_BACKGROUND:
3538                         params->p.txop = 0;
3539                         params->p.aifs = 7;
3540                         params->p.cw_min = 0x0001;
3541                         params->p.cw_max = 0x03FF;
3542                         break;
3543                 default:
3544                         B43_WARN_ON(1);
3545                 }
3546         }
3547 }
3548
3549 /* Initialize the core's QOS capabilities */
3550 static void b43_qos_init(struct b43_wldev *dev)
3551 {
3552         if (!dev->qos_enabled) {
3553                 /* Disable QOS support. */
3554                 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
3555                 b43_write16(dev, B43_MMIO_IFSCTL,
3556                             b43_read16(dev, B43_MMIO_IFSCTL)
3557                             & ~B43_MMIO_IFSCTL_USE_EDCF);
3558                 b43dbg(dev->wl, "QoS disabled\n");
3559                 return;
3560         }
3561
3562         /* Upload the current QOS parameters. */
3563         b43_qos_upload_all(dev);
3564
3565         /* Enable QOS support. */
3566         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
3567         b43_write16(dev, B43_MMIO_IFSCTL,
3568                     b43_read16(dev, B43_MMIO_IFSCTL)
3569                     | B43_MMIO_IFSCTL_USE_EDCF);
3570         b43dbg(dev->wl, "QoS enabled\n");
3571 }
3572
3573 static int b43_op_conf_tx(struct ieee80211_hw *hw,
3574                           struct ieee80211_vif *vif, u16 _queue,
3575                           const struct ieee80211_tx_queue_params *params)
3576 {
3577         struct b43_wl *wl = hw_to_b43_wl(hw);
3578         struct b43_wldev *dev;
3579         unsigned int queue = (unsigned int)_queue;
3580         int err = -ENODEV;
3581
3582         if (queue >= ARRAY_SIZE(wl->qos_params)) {
3583                 /* Queue not available or don't support setting
3584                  * params on this queue. Return success to not
3585                  * confuse mac80211. */
3586                 return 0;
3587         }
3588         BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
3589                      ARRAY_SIZE(wl->qos_params));
3590
3591         mutex_lock(&wl->mutex);
3592         dev = wl->current_dev;
3593         if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED)))
3594                 goto out_unlock;
3595
3596         memcpy(&(wl->qos_params[queue].p), params, sizeof(*params));
3597         b43_mac_suspend(dev);
3598         b43_qos_params_upload(dev, &(wl->qos_params[queue].p),
3599                               b43_qos_shm_offsets[queue]);
3600         b43_mac_enable(dev);
3601         err = 0;
3602
3603 out_unlock:
3604         mutex_unlock(&wl->mutex);
3605
3606         return err;
3607 }
3608
3609 static int b43_op_get_stats(struct ieee80211_hw *hw,
3610                             struct ieee80211_low_level_stats *stats)
3611 {
3612         struct b43_wl *wl = hw_to_b43_wl(hw);
3613
3614         mutex_lock(&wl->mutex);
3615         memcpy(stats, &wl->ieee_stats, sizeof(*stats));
3616         mutex_unlock(&wl->mutex);
3617
3618         return 0;
3619 }
3620
3621 static u64 b43_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
3622 {
3623         struct b43_wl *wl = hw_to_b43_wl(hw);
3624         struct b43_wldev *dev;
3625         u64 tsf;
3626
3627         mutex_lock(&wl->mutex);
3628         dev = wl->current_dev;
3629
3630         if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3631                 b43_tsf_read(dev, &tsf);
3632         else
3633                 tsf = 0;
3634
3635         mutex_unlock(&wl->mutex);
3636
3637         return tsf;
3638 }
3639
3640 static void b43_op_set_tsf(struct ieee80211_hw *hw,
3641                            struct ieee80211_vif *vif, u64 tsf)
3642 {
3643         struct b43_wl *wl = hw_to_b43_wl(hw);
3644         struct b43_wldev *dev;
3645
3646         mutex_lock(&wl->mutex);
3647         dev = wl->current_dev;
3648
3649         if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED))
3650                 b43_tsf_write(dev, tsf);
3651
3652         mutex_unlock(&wl->mutex);
3653 }
3654
3655 static void b43_put_phy_into_reset(struct b43_wldev *dev)
3656 {
3657         u32 tmp;
3658
3659         switch (dev->dev->bus_type) {
3660 #ifdef CONFIG_B43_BCMA
3661         case B43_BUS_BCMA:
3662                 b43err(dev->wl,
3663                        "Putting PHY into reset not supported on BCMA\n");
3664                 break;
3665 #endif
3666 #ifdef CONFIG_B43_SSB
3667         case B43_BUS_SSB:
3668                 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
3669                 tmp &= ~B43_TMSLOW_GMODE;
3670                 tmp |= B43_TMSLOW_PHYRESET;
3671                 tmp |= SSB_TMSLOW_FGC;
3672                 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
3673                 msleep(1);
3674
3675                 tmp = ssb_read32(dev->dev->sdev, SSB_TMSLOW);
3676                 tmp &= ~SSB_TMSLOW_FGC;
3677                 tmp |= B43_TMSLOW_PHYRESET;
3678                 ssb_write32(dev->dev->sdev, SSB_TMSLOW, tmp);
3679                 msleep(1);
3680
3681                 break;
3682 #endif
3683         }
3684 }
3685
3686 static const char *band_to_string(enum ieee80211_band band)
3687 {
3688         switch (band) {
3689         case IEEE80211_BAND_5GHZ:
3690                 return "5";
3691         case IEEE80211_BAND_2GHZ:
3692                 return "2.4";
3693         default:
3694                 break;
3695         }
3696         B43_WARN_ON(1);
3697         return "";
3698 }
3699
3700 /* Expects wl->mutex locked */
3701 static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
3702 {
3703         struct b43_wldev *up_dev = NULL;
3704         struct b43_wldev *down_dev;
3705         struct b43_wldev *d;
3706         int err;
3707         bool uninitialized_var(gmode);
3708         int prev_status;
3709
3710         /* Find a device and PHY which supports the band. */
3711         list_for_each_entry(d, &wl->devlist, list) {
3712                 switch (chan->band) {
3713                 case IEEE80211_BAND_5GHZ:
3714                         if (d->phy.supports_5ghz) {
3715                                 up_dev = d;
3716                                 gmode = false;
3717                         }
3718                         break;
3719                 case IEEE80211_BAND_2GHZ:
3720                         if (d->phy.supports_2ghz) {
3721                                 up_dev = d;
3722                                 gmode = true;
3723                         }
3724                         break;
3725                 default:
3726                         B43_WARN_ON(1);
3727                         return -EINVAL;
3728                 }
3729                 if (up_dev)
3730                         break;
3731         }
3732         if (!up_dev) {
3733                 b43err(wl, "Could not find a device for %s-GHz band operation\n",
3734                        band_to_string(chan->band));
3735                 return -ENODEV;
3736         }
3737         if ((up_dev == wl->current_dev) &&
3738             (!!wl->current_dev->phy.gmode == !!gmode)) {
3739                 /* This device is already running. */
3740                 return 0;
3741         }
3742         b43dbg(wl, "Switching to %s-GHz band\n",
3743                band_to_string(chan->band));
3744         down_dev = wl->current_dev;
3745
3746         prev_status = b43_status(down_dev);
3747         /* Shutdown the currently running core. */
3748         if (prev_status >= B43_STAT_STARTED)
3749                 down_dev = b43_wireless_core_stop(down_dev);
3750         if (prev_status >= B43_STAT_INITIALIZED)
3751                 b43_wireless_core_exit(down_dev);
3752
3753         if (down_dev != up_dev) {
3754                 /* We switch to a different core, so we put PHY into
3755                  * RESET on the old core. */
3756                 b43_put_phy_into_reset(down_dev);
3757         }
3758
3759         /* Now start the new core. */
3760         up_dev->phy.gmode = gmode;
3761         if (prev_status >= B43_STAT_INITIALIZED) {
3762                 err = b43_wireless_core_init(up_dev);
3763                 if (err) {
3764                         b43err(wl, "Fatal: Could not initialize device for "
3765                                "selected %s-GHz band\n",
3766                                band_to_string(chan->band));
3767                         goto init_failure;
3768                 }
3769         }
3770         if (prev_status >= B43_STAT_STARTED) {
3771                 err = b43_wireless_core_start(up_dev);
3772                 if (err) {
3773                         b43err(wl, "Fatal: Could not start device for "
3774                                "selected %s-GHz band\n",
3775                                band_to_string(chan->band));
3776                         b43_wireless_core_exit(up_dev);
3777                         goto init_failure;
3778                 }
3779         }
3780         B43_WARN_ON(b43_status(up_dev) != prev_status);
3781
3782         wl->current_dev = up_dev;
3783
3784         return 0;
3785 init_failure:
3786         /* Whoops, failed to init the new core. No core is operating now. */
3787         wl->current_dev = NULL;
3788         return err;
3789 }
3790
3791 /* Write the short and long frame retry limit values. */
3792 static void b43_set_retry_limits(struct b43_wldev *dev,
3793                                  unsigned int short_retry,
3794                                  unsigned int long_retry)
3795 {
3796         /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3797          * the chip-internal counter. */
3798         short_retry = min(short_retry, (unsigned int)0xF);
3799         long_retry = min(long_retry, (unsigned int)0xF);
3800
3801         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3802                         short_retry);
3803         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3804                         long_retry);
3805 }
3806
3807 static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
3808 {
3809         struct b43_wl *wl = hw_to_b43_wl(hw);
3810         struct b43_wldev *dev;
3811         struct b43_phy *phy;
3812         struct ieee80211_conf *conf = &hw->conf;
3813         int antenna;
3814         int err = 0;
3815         bool reload_bss = false;
3816
3817         mutex_lock(&wl->mutex);
3818
3819         dev = wl->current_dev;
3820
3821         /* Switch the band (if necessary). This might change the active core. */
3822         err = b43_switch_band(wl, conf->channel);
3823         if (err)
3824                 goto out_unlock_mutex;
3825
3826         /* Need to reload all settings if the core changed */
3827         if (dev != wl->current_dev) {
3828                 dev = wl->current_dev;
3829                 changed = ~0;
3830                 reload_bss = true;
3831         }
3832
3833         phy = &dev->phy;
3834
3835         if (conf_is_ht(conf))
3836                 phy->is_40mhz =
3837                         (conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf));
3838         else
3839                 phy->is_40mhz = false;
3840
3841         b43_mac_suspend(dev);
3842
3843         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
3844                 b43_set_retry_limits(dev, conf->short_frame_max_tx_count,
3845                                           conf->long_frame_max_tx_count);
3846         changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS;
3847         if (!changed)
3848                 goto out_mac_enable;
3849
3850         /* Switch to the requested channel.
3851          * The firmware takes care of races with the TX handler. */
3852         if (conf->channel->hw_value != phy->channel)
3853                 b43_switch_channel(dev, conf->channel->hw_value);
3854
3855         dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
3856
3857         /* Adjust the desired TX power level. */
3858         if (conf->power_level != 0) {
3859                 if (conf->power_level != phy->desired_txpower) {
3860                         phy->desired_txpower = conf->power_level;
3861                         b43_phy_txpower_check(dev, B43_TXPWR_IGNORE_TIME |
3862                                                    B43_TXPWR_IGNORE_TSSI);
3863                 }
3864         }
3865
3866         /* Antennas for RX and management frame TX. */
3867         antenna = B43_ANTENNA_DEFAULT;
3868         b43_mgmtframe_txantenna(dev, antenna);
3869         antenna = B43_ANTENNA_DEFAULT;
3870         if (phy->ops->set_rx_antenna)
3871                 phy->ops->set_rx_antenna(dev, antenna);
3872
3873         if (wl->radio_enabled != phy->radio_on) {
3874                 if (wl->radio_enabled) {
3875                         b43_software_rfkill(dev, false);
3876                         b43info(dev->wl, "Radio turned on by software\n");
3877                         if (!dev->radio_hw_enable) {
3878                                 b43info(dev->wl, "The hardware RF-kill button "
3879                                         "still turns the radio physically off. "
3880                                         "Press the button to turn it on.\n");
3881                         }
3882                 } else {
3883                         b43_software_rfkill(dev, true);
3884                         b43info(dev->wl, "Radio turned off by software\n");
3885                 }
3886         }
3887
3888 out_mac_enable:
3889         b43_mac_enable(dev);
3890 out_unlock_mutex:
3891         mutex_unlock(&wl->mutex);
3892
3893         if (wl->vif && reload_bss)
3894                 b43_op_bss_info_changed(hw, wl->vif, &wl->vif->bss_conf, ~0);
3895
3896         return err;
3897 }
3898
3899 static void b43_update_basic_rates(struct b43_wldev *dev, u32 brates)
3900 {
3901         struct ieee80211_supported_band *sband =
3902                 dev->wl->hw->wiphy->bands[b43_current_band(dev->wl)];
3903         struct ieee80211_rate *rate;
3904         int i;
3905         u16 basic, direct, offset, basic_offset, rateptr;
3906
3907         for (i = 0; i < sband->n_bitrates; i++) {
3908                 rate = &sband->bitrates[i];
3909
3910                 if (b43_is_cck_rate(rate->hw_value)) {
3911                         direct = B43_SHM_SH_CCKDIRECT;
3912                         basic = B43_SHM_SH_CCKBASIC;
3913                         offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3914                         offset &= 0xF;
3915                 } else {
3916                         direct = B43_SHM_SH_OFDMDIRECT;
3917                         basic = B43_SHM_SH_OFDMBASIC;
3918                         offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3919                         offset &= 0xF;
3920                 }
3921
3922                 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate);
3923
3924                 if (b43_is_cck_rate(rate->hw_value)) {
3925                         basic_offset = b43_plcp_get_ratecode_cck(rate->hw_value);
3926                         basic_offset &= 0xF;
3927                 } else {
3928                         basic_offset = b43_plcp_get_ratecode_ofdm(rate->hw_value);
3929                         basic_offset &= 0xF;
3930                 }
3931
3932                 /*
3933                  * Get the pointer that we need to point to
3934                  * from the direct map
3935                  */
3936                 rateptr = b43_shm_read16(dev, B43_SHM_SHARED,
3937                                          direct + 2 * basic_offset);
3938                 /* and write it to the basic map */
3939                 b43_shm_write16(dev, B43_SHM_SHARED, basic + 2 * offset,
3940                                 rateptr);
3941         }
3942 }
3943
3944 static void b43_op_bss_info_changed(struct ieee80211_hw *hw,
3945                                     struct ieee80211_vif *vif,
3946                                     struct ieee80211_bss_conf *conf,
3947                                     u32 changed)
3948 {
3949         struct b43_wl *wl = hw_to_b43_wl(hw);
3950         struct b43_wldev *dev;
3951
3952         mutex_lock(&wl->mutex);
3953
3954         dev = wl->current_dev;
3955         if (!dev || b43_status(dev) < B43_STAT_STARTED)
3956                 goto out_unlock_mutex;
3957
3958         B43_WARN_ON(wl->vif != vif);
3959
3960         if (changed & BSS_CHANGED_BSSID) {
3961                 if (conf->bssid)
3962                         memcpy(wl->bssid, conf->bssid, ETH_ALEN);
3963                 else
3964                         memset(wl->bssid, 0, ETH_ALEN);
3965         }
3966
3967         if (b43_status(dev) >= B43_STAT_INITIALIZED) {
3968                 if (changed & BSS_CHANGED_BEACON &&
3969                     (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3970                      b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3971                      b43_is_mode(wl, NL80211_IFTYPE_ADHOC)))
3972                         b43_update_templates(wl);
3973
3974                 if (changed & BSS_CHANGED_BSSID)
3975                         b43_write_mac_bssid_templates(dev);
3976         }
3977
3978         b43_mac_suspend(dev);
3979
3980         /* Update templates for AP/mesh mode. */
3981         if (changed & BSS_CHANGED_BEACON_INT &&
3982             (b43_is_mode(wl, NL80211_IFTYPE_AP) ||
3983              b43_is_mode(wl, NL80211_IFTYPE_MESH_POINT) ||
3984              b43_is_mode(wl, NL80211_IFTYPE_ADHOC)) &&
3985             conf->beacon_int)
3986                 b43_set_beacon_int(dev, conf->beacon_int);
3987
3988         if (changed & BSS_CHANGED_BASIC_RATES)
3989                 b43_update_basic_rates(dev, conf->basic_rates);
3990
3991         if (changed & BSS_CHANGED_ERP_SLOT) {
3992                 if (conf->use_short_slot)
3993                         b43_short_slot_timing_enable(dev);
3994                 else
3995                         b43_short_slot_timing_disable(dev);
3996         }
3997
3998         b43_mac_enable(dev);
3999 out_unlock_mutex:
4000         mutex_unlock(&wl->mutex);
4001 }
4002
4003 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4004                           struct ieee80211_vif *vif, struct ieee80211_sta *sta,
4005                           struct ieee80211_key_conf *key)
4006 {
4007         struct b43_wl *wl = hw_to_b43_wl(hw);
4008         struct b43_wldev *dev;
4009         u8 algorithm;
4010         u8 index;
4011         int err;
4012         static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
4013
4014         if (modparam_nohwcrypt)
4015                 return -ENOSPC; /* User disabled HW-crypto */
4016
4017         if ((vif->type == NL80211_IFTYPE_ADHOC ||
4018              vif->type == NL80211_IFTYPE_MESH_POINT) &&
4019             (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
4020              key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
4021             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
4022                 /*
4023                  * For now, disable hw crypto for the RSN IBSS group keys. This
4024                  * could be optimized in the future, but until that gets
4025                  * implemented, use of software crypto for group addressed
4026                  * frames is a acceptable to allow RSN IBSS to be used.
4027                  */
4028                 return -EOPNOTSUPP;
4029         }
4030
4031         mutex_lock(&wl->mutex);
4032
4033         dev = wl->current_dev;
4034         err = -ENODEV;
4035         if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
4036                 goto out_unlock;
4037
4038         if (dev->fw.pcm_request_failed || !dev->hwcrypto_enabled) {
4039                 /* We don't have firmware for the crypto engine.
4040                  * Must use software-crypto. */
4041                 err = -EOPNOTSUPP;
4042                 goto out_unlock;
4043         }
4044
4045         err = -EINVAL;
4046         switch (key->cipher) {
4047         case WLAN_CIPHER_SUITE_WEP40:
4048                 algorithm = B43_SEC_ALGO_WEP40;
4049                 break;
4050         case WLAN_CIPHER_SUITE_WEP104:
4051                 algorithm = B43_SEC_ALGO_WEP104;
4052                 break;
4053         case WLAN_CIPHER_SUITE_TKIP:
4054                 algorithm = B43_SEC_ALGO_TKIP;
4055                 break;
4056         case WLAN_CIPHER_SUITE_CCMP:
4057                 algorithm = B43_SEC_ALGO_AES;
4058                 break;
4059         default:
4060                 B43_WARN_ON(1);
4061                 goto out_unlock;
4062         }
4063         index = (u8) (key->keyidx);
4064         if (index > 3)
4065                 goto out_unlock;
4066
4067         switch (cmd) {
4068         case SET_KEY:
4069                 if (algorithm == B43_SEC_ALGO_TKIP &&
4070                     (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
4071                     !modparam_hwtkip)) {
4072                         /* We support only pairwise key */
4073                         err = -EOPNOTSUPP;
4074                         goto out_unlock;
4075                 }
4076
4077                 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
4078                         if (WARN_ON(!sta)) {
4079                                 err = -EOPNOTSUPP;
4080                                 goto out_unlock;
4081                         }
4082                         /* Pairwise key with an assigned MAC address. */
4083                         err = b43_key_write(dev, -1, algorithm,
4084                                             key->key, key->keylen,
4085                                             sta->addr, key);
4086                 } else {
4087                         /* Group key */
4088                         err = b43_key_write(dev, index, algorithm,
4089                                             key->key, key->keylen, NULL, key);
4090                 }
4091                 if (err)
4092                         goto out_unlock;
4093
4094                 if (algorithm == B43_SEC_ALGO_WEP40 ||
4095                     algorithm == B43_SEC_ALGO_WEP104) {
4096                         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
4097                 } else {
4098                         b43_hf_write(dev,
4099                                      b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
4100                 }
4101                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4102                 if (algorithm == B43_SEC_ALGO_TKIP)
4103                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
4104                 break;
4105         case DISABLE_KEY: {
4106                 err = b43_key_clear(dev, key->hw_key_idx);
4107                 if (err)
4108                         goto out_unlock;
4109                 break;
4110         }
4111         default:
4112                 B43_WARN_ON(1);
4113         }
4114
4115 out_unlock:
4116         if (!err) {
4117                 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
4118                        "mac: %pM\n",
4119                        cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
4120                        sta ? sta->addr : bcast_addr);
4121                 b43_dump_keymemory(dev);
4122         }
4123         mutex_unlock(&wl->mutex);
4124
4125         return err;
4126 }
4127
4128 static void b43_op_configure_filter(struct ieee80211_hw *hw,
4129                                     unsigned int changed, unsigned int *fflags,
4130                                     u64 multicast)
4131 {
4132         struct b43_wl *wl = hw_to_b43_wl(hw);
4133         struct b43_wldev *dev;
4134
4135         mutex_lock(&wl->mutex);
4136         dev = wl->current_dev;
4137         if (!dev) {
4138                 *fflags = 0;
4139                 goto out_unlock;
4140         }
4141
4142         *fflags &= FIF_PROMISC_IN_BSS |
4143                   FIF_ALLMULTI |
4144                   FIF_FCSFAIL |
4145                   FIF_PLCPFAIL |
4146                   FIF_CONTROL |
4147                   FIF_OTHER_BSS |
4148                   FIF_BCN_PRBRESP_PROMISC;
4149
4150         changed &= FIF_PROMISC_IN_BSS |
4151                    FIF_ALLMULTI |
4152                    FIF_FCSFAIL |
4153                    FIF_PLCPFAIL |
4154                    FIF_CONTROL |
4155                    FIF_OTHER_BSS |
4156                    FIF_BCN_PRBRESP_PROMISC;
4157
4158         wl->filter_flags = *fflags;
4159
4160         if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
4161                 b43_adjust_opmode(dev);
4162
4163 out_unlock:
4164         mutex_unlock(&wl->mutex);
4165 }
4166
4167 /* Locking: wl->mutex
4168  * Returns the current dev. This might be different from the passed in dev,
4169  * because the core might be gone away while we unlocked the mutex. */
4170 static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
4171 {
4172         struct b43_wl *wl;
4173         struct b43_wldev *orig_dev;
4174         u32 mask;
4175         int queue_num;
4176
4177         if (!dev)
4178                 return NULL;
4179         wl = dev->wl;
4180 redo:
4181         if (!dev || b43_status(dev) < B43_STAT_STARTED)
4182                 return dev;
4183
4184         /* Cancel work. Unlock to avoid deadlocks. */
4185         mutex_unlock(&wl->mutex);
4186         cancel_delayed_work_sync(&dev->periodic_work);
4187         cancel_work_sync(&wl->tx_work);
4188         cancel_work_sync(&wl->firmware_load);
4189         mutex_lock(&wl->mutex);
4190         dev = wl->current_dev;
4191         if (!dev || b43_status(dev) < B43_STAT_STARTED) {
4192                 /* Whoops, aliens ate up the device while we were unlocked. */
4193                 return dev;
4194         }
4195
4196         /* Disable interrupts on the device. */
4197         b43_set_status(dev, B43_STAT_INITIALIZED);
4198         if (b43_bus_host_is_sdio(dev->dev)) {
4199                 /* wl->mutex is locked. That is enough. */
4200                 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
4201                 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
4202         } else {
4203                 spin_lock_irq(&wl->hardirq_lock);
4204                 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
4205                 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* Flush */
4206                 spin_unlock_irq(&wl->hardirq_lock);
4207         }
4208         /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
4209         orig_dev = dev;
4210         mutex_unlock(&wl->mutex);
4211         if (b43_bus_host_is_sdio(dev->dev)) {
4212                 b43_sdio_free_irq(dev);
4213         } else {
4214                 synchronize_irq(dev->dev->irq);
4215                 free_irq(dev->dev->irq, dev);
4216         }
4217         mutex_lock(&wl->mutex);
4218         dev = wl->current_dev;
4219         if (!dev)
4220                 return dev;
4221         if (dev != orig_dev) {
4222                 if (b43_status(dev) >= B43_STAT_STARTED)
4223                         goto redo;
4224                 return dev;
4225         }
4226         mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
4227         B43_WARN_ON(mask != 0xFFFFFFFF && mask);
4228
4229         /* Drain all TX queues. */
4230         for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
4231                 while (skb_queue_len(&wl->tx_queue[queue_num]))
4232                         dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
4233         }
4234
4235         b43_mac_suspend(dev);
4236         b43_leds_exit(dev);
4237         b43dbg(wl, "Wireless interface stopped\n");
4238
4239         return dev;
4240 }
4241
4242 /* Locking: wl->mutex */
4243 static int b43_wireless_core_start(struct b43_wldev *dev)
4244 {
4245         int err;
4246
4247         B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
4248
4249         drain_txstatus_queue(dev);
4250         if (b43_bus_host_is_sdio(dev->dev)) {
4251                 err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
4252                 if (err) {
4253                         b43err(dev->wl, "Cannot request SDIO IRQ\n");
4254                         goto out;
4255                 }
4256         } else {
4257                 err = request_threaded_irq(dev->dev->irq, b43_interrupt_handler,
4258                                            b43_interrupt_thread_handler,
4259                                            IRQF_SHARED, KBUILD_MODNAME, dev);
4260                 if (err) {
4261                         b43err(dev->wl, "Cannot request IRQ-%d\n",
4262                                dev->dev->irq);
4263                         goto out;
4264                 }
4265         }
4266
4267         /* We are ready to run. */
4268         ieee80211_wake_queues(dev->wl->hw);
4269         b43_set_status(dev, B43_STAT_STARTED);
4270
4271         /* Start data flow (TX/RX). */
4272         b43_mac_enable(dev);
4273         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, dev->irq_mask);
4274
4275         /* Start maintenance work */
4276         b43_periodic_tasks_setup(dev);
4277
4278         b43_leds_init(dev);
4279
4280         b43dbg(dev->wl, "Wireless interface started\n");
4281 out:
4282         return err;
4283 }
4284
4285 static char *b43_phy_name(struct b43_wldev *dev, u8 phy_type)
4286 {
4287         switch (phy_type) {
4288         case B43_PHYTYPE_A:
4289                 return "A";
4290         case B43_PHYTYPE_B:
4291                 return "B";
4292         case B43_PHYTYPE_G:
4293                 return "G";
4294         case B43_PHYTYPE_N:
4295                 return "N";
4296         case B43_PHYTYPE_LP:
4297                 return "LP";
4298         case B43_PHYTYPE_SSLPN:
4299                 return "SSLPN";
4300         case B43_PHYTYPE_HT:
4301                 return "HT";
4302         case B43_PHYTYPE_LCN:
4303                 return "LCN";
4304         case B43_PHYTYPE_LCNXN:
4305                 return "LCNXN";
4306         case B43_PHYTYPE_LCN40:
4307                 return "LCN40";
4308         case B43_PHYTYPE_AC:
4309                 return "AC";
4310         }
4311         return "UNKNOWN";
4312 }
4313
4314 /* Get PHY and RADIO versioning numbers */
4315 static int b43_phy_versioning(struct b43_wldev *dev)
4316 {
4317         struct b43_phy *phy = &dev->phy;
4318         u32 tmp;
4319         u8 analog_type;
4320         u8 phy_type;
4321         u8 phy_rev;
4322         u16 radio_manuf;
4323         u16 radio_ver;
4324         u16 radio_rev;
4325         int unsupported = 0;
4326
4327         /* Get PHY versioning */
4328         tmp = b43_read16(dev, B43_MMIO_PHY_VER);
4329         analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
4330         phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
4331         phy_rev = (tmp & B43_PHYVER_VERSION);
4332         switch (phy_type) {
4333         case B43_PHYTYPE_A:
4334                 if (phy_rev >= 4)
4335                         unsupported = 1;
4336                 break;
4337         case B43_PHYTYPE_B:
4338                 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
4339                     && phy_rev != 7)
4340                         unsupported = 1;
4341                 break;
4342         case B43_PHYTYPE_G:
4343                 if (phy_rev > 9)
4344                         unsupported = 1;
4345                 break;
4346 #ifdef CONFIG_B43_PHY_N
4347         case B43_PHYTYPE_N:
4348                 if (phy_rev > 9)
4349                         unsupported = 1;
4350                 break;
4351 #endif
4352 #ifdef CONFIG_B43_PHY_LP
4353         case B43_PHYTYPE_LP:
4354                 if (phy_rev > 2)
4355                         unsupported = 1;
4356                 break;
4357 #endif
4358 #ifdef CONFIG_B43_PHY_HT
4359         case B43_PHYTYPE_HT:
4360                 if (phy_rev > 1)
4361                         unsupported = 1;
4362                 break;
4363 #endif
4364 #ifdef CONFIG_B43_PHY_LCN
4365         case B43_PHYTYPE_LCN:
4366                 if (phy_rev > 1)
4367                         unsupported = 1;
4368                 break;
4369 #endif
4370         default:
4371                 unsupported = 1;
4372         }
4373         if (unsupported) {
4374                 b43err(dev->wl, "FOUND UNSUPPORTED PHY (Analog %u, Type %d (%s), Revision %u)\n",
4375                        analog_type, phy_type, b43_phy_name(dev, phy_type),
4376                        phy_rev);
4377                 return -EOPNOTSUPP;
4378         }
4379         b43info(dev->wl, "Found PHY: Analog %u, Type %d (%s), Revision %u\n",
4380                 analog_type, phy_type, b43_phy_name(dev, phy_type), phy_rev);
4381
4382         /* Get RADIO versioning */
4383         if (dev->dev->core_rev >= 24) {
4384                 u16 radio24[3];
4385
4386                 for (tmp = 0; tmp < 3; tmp++) {
4387                         b43_write16(dev, B43_MMIO_RADIO24_CONTROL, tmp);
4388                         radio24[tmp] = b43_read16(dev, B43_MMIO_RADIO24_DATA);
4389                 }
4390
4391                 /* Broadcom uses "id" for our "ver" and has separated "ver" */
4392                 /* radio_ver = (radio24[0] & 0xF0) >> 4; */
4393
4394                 radio_manuf = 0x17F;
4395                 radio_ver = (radio24[2] << 8) | radio24[1];
4396                 radio_rev = (radio24[0] & 0xF);
4397         } else {
4398                 if (dev->dev->chip_id == 0x4317) {
4399                         if (dev->dev->chip_rev == 0)
4400                                 tmp = 0x3205017F;
4401                         else if (dev->dev->chip_rev == 1)
4402                                 tmp = 0x4205017F;
4403                         else
4404                                 tmp = 0x5205017F;
4405                 } else {
4406                         b43_write16(dev, B43_MMIO_RADIO_CONTROL,
4407                                     B43_RADIOCTL_ID);
4408                         tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
4409                         b43_write16(dev, B43_MMIO_RADIO_CONTROL,
4410                                     B43_RADIOCTL_ID);
4411                         tmp |= (u32)b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH)
4412                                 << 16;
4413                 }
4414                 radio_manuf = (tmp & 0x00000FFF);
4415                 radio_ver = (tmp & 0x0FFFF000) >> 12;
4416                 radio_rev = (tmp & 0xF0000000) >> 28;
4417         }
4418
4419         if (radio_manuf != 0x17F /* Broadcom */)
4420                 unsupported = 1;
4421         switch (phy_type) {
4422         case B43_PHYTYPE_A:
4423                 if (radio_ver != 0x2060)
4424                         unsupported = 1;
4425                 if (radio_rev != 1)
4426                         unsupported = 1;
4427                 if (radio_manuf != 0x17F)
4428                         unsupported = 1;
4429                 break;
4430         case B43_PHYTYPE_B:
4431                 if ((radio_ver & 0xFFF0) != 0x2050)
4432                         unsupported = 1;
4433                 break;
4434         case B43_PHYTYPE_G:
4435                 if (radio_ver != 0x2050)
4436                         unsupported = 1;
4437                 break;
4438         case B43_PHYTYPE_N:
4439                 if (radio_ver != 0x2055 && radio_ver != 0x2056)
4440                         unsupported = 1;
4441                 break;
4442         case B43_PHYTYPE_LP:
4443                 if (radio_ver != 0x2062 && radio_ver != 0x2063)
4444                         unsupported = 1;
4445                 break;
4446         case B43_PHYTYPE_HT:
4447                 if (radio_ver != 0x2059)
4448                         unsupported = 1;
4449                 break;
4450         case B43_PHYTYPE_LCN:
4451                 if (radio_ver != 0x2064)
4452                         unsupported = 1;
4453                 break;
4454         default:
4455                 B43_WARN_ON(1);
4456         }
4457         if (unsupported) {
4458                 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
4459                        "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
4460                        radio_manuf, radio_ver, radio_rev);
4461                 return -EOPNOTSUPP;
4462         }
4463         b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
4464                radio_manuf, radio_ver, radio_rev);
4465
4466         phy->radio_manuf = radio_manuf;
4467         phy->radio_ver = radio_ver;
4468         phy->radio_rev = radio_rev;
4469
4470         phy->analog = analog_type;
4471         phy->type = phy_type;
4472         phy->rev = phy_rev;
4473
4474         return 0;
4475 }
4476
4477 static void setup_struct_phy_for_init(struct b43_wldev *dev,
4478                                       struct b43_phy *phy)
4479 {
4480         phy->hardware_power_control = !!modparam_hwpctl;
4481         phy->next_txpwr_check_time = jiffies;
4482         /* PHY TX errors counter. */
4483         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
4484
4485 #if B43_DEBUG
4486         phy->phy_locked = false;
4487         phy->radio_locked = false;
4488 #endif
4489 }
4490
4491 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
4492 {
4493         dev->dfq_valid = false;
4494
4495         /* Assume the radio is enabled. If it's not enabled, the state will
4496          * immediately get fixed on the first periodic work run. */
4497         dev->radio_hw_enable = true;
4498
4499         /* Stats */
4500         memset(&dev->stats, 0, sizeof(dev->stats));
4501
4502         setup_struct_phy_for_init(dev, &dev->phy);
4503
4504         /* IRQ related flags */
4505         dev->irq_reason = 0;
4506         memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
4507         dev->irq_mask = B43_IRQ_MASKTEMPLATE;
4508         if (b43_modparam_verbose < B43_VERBOSITY_DEBUG)
4509                 dev->irq_mask &= ~B43_IRQ_PHY_TXERR;
4510
4511         dev->mac_suspended = 1;
4512
4513         /* Noise calculation context */
4514         memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
4515 }
4516
4517 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
4518 {
4519         struct ssb_sprom *sprom = dev->dev->bus_sprom;
4520         u64 hf;
4521
4522         if (!modparam_btcoex)
4523                 return;
4524         if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
4525                 return;
4526         if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
4527                 return;
4528
4529         hf = b43_hf_read(dev);
4530         if (sprom->boardflags_lo & B43_BFL_BTCMOD)
4531                 hf |= B43_HF_BTCOEXALT;
4532         else
4533                 hf |= B43_HF_BTCOEX;
4534         b43_hf_write(dev, hf);
4535 }
4536
4537 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
4538 {
4539         if (!modparam_btcoex)
4540                 return;
4541         //TODO
4542 }
4543
4544 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
4545 {
4546         struct ssb_bus *bus;
4547         u32 tmp;
4548
4549         if (dev->dev->bus_type != B43_BUS_SSB)
4550                 return;
4551
4552         bus = dev->dev->sdev->bus;
4553
4554         if ((bus->chip_id == 0x4311 && bus->chip_rev == 2) ||
4555             (bus->chip_id == 0x4312)) {
4556                 tmp = ssb_read32(dev->dev->sdev, SSB_IMCFGLO);
4557                 tmp &= ~SSB_IMCFGLO_REQTO;
4558                 tmp &= ~SSB_IMCFGLO_SERTO;
4559                 tmp |= 0x3;
4560                 ssb_write32(dev->dev->sdev, SSB_IMCFGLO, tmp);
4561                 ssb_commit_settings(bus);
4562         }
4563 }
4564
4565 static void b43_set_synth_pu_delay(struct b43_wldev *dev, bool idle)
4566 {
4567         u16 pu_delay;
4568
4569         /* The time value is in microseconds. */
4570         if (dev->phy.type == B43_PHYTYPE_A)
4571                 pu_delay = 3700;
4572         else
4573                 pu_delay = 1050;
4574         if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle)
4575                 pu_delay = 500;
4576         if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
4577                 pu_delay = max(pu_delay, (u16)2400);
4578
4579         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SPUWKUP, pu_delay);
4580 }
4581
4582 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
4583 static void b43_set_pretbtt(struct b43_wldev *dev)
4584 {
4585         u16 pretbtt;
4586
4587         /* The time value is in microseconds. */
4588         if (b43_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) {
4589                 pretbtt = 2;
4590         } else {
4591                 if (dev->phy.type == B43_PHYTYPE_A)
4592                         pretbtt = 120;
4593                 else
4594                         pretbtt = 250;
4595         }
4596         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRETBTT, pretbtt);
4597         b43_write16(dev, B43_MMIO_TSF_CFP_PRETBTT, pretbtt);
4598 }
4599
4600 /* Shutdown a wireless core */
4601 /* Locking: wl->mutex */
4602 static void b43_wireless_core_exit(struct b43_wldev *dev)
4603 {
4604         B43_WARN_ON(dev && b43_status(dev) > B43_STAT_INITIALIZED);
4605         if (!dev || b43_status(dev) != B43_STAT_INITIALIZED)
4606                 return;
4607
4608         /* Unregister HW RNG driver */
4609         b43_rng_exit(dev->wl);
4610
4611         b43_set_status(dev, B43_STAT_UNINIT);
4612
4613         /* Stop the microcode PSM. */
4614         b43_maskset32(dev, B43_MMIO_MACCTL, ~B43_MACCTL_PSM_RUN,
4615                       B43_MACCTL_PSM_JMP0);
4616
4617         b43_dma_free(dev);
4618         b43_pio_free(dev);
4619         b43_chip_exit(dev);
4620         dev->phy.ops->switch_analog(dev, 0);
4621         if (dev->wl->current_beacon) {
4622                 dev_kfree_skb_any(dev->wl->current_beacon);
4623                 dev->wl->current_beacon = NULL;
4624         }
4625
4626         b43_device_disable(dev, 0);
4627         b43_bus_may_powerdown(dev);
4628 }
4629
4630 /* Initialize a wireless core */
4631 static int b43_wireless_core_init(struct b43_wldev *dev)
4632 {
4633         struct ssb_sprom *sprom = dev->dev->bus_sprom;
4634         struct b43_phy *phy = &dev->phy;
4635         int err;
4636         u64 hf;
4637
4638         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4639
4640         err = b43_bus_powerup(dev, 0);
4641         if (err)
4642                 goto out;
4643         if (!b43_device_is_enabled(dev))
4644                 b43_wireless_core_reset(dev, phy->gmode);
4645
4646         /* Reset all data structures. */
4647         setup_struct_wldev_for_init(dev);
4648         phy->ops->prepare_structs(dev);
4649
4650         /* Enable IRQ routing to this device. */
4651         switch (dev->dev->bus_type) {
4652 #ifdef CONFIG_B43_BCMA
4653         case B43_BUS_BCMA:
4654                 bcma_core_pci_irq_ctl(&dev->dev->bdev->bus->drv_pci,
4655                                       dev->dev->bdev, true);
4656                 break;
4657 #endif
4658 #ifdef CONFIG_B43_SSB
4659         case B43_BUS_SSB:
4660                 ssb_pcicore_dev_irqvecs_enable(&dev->dev->sdev->bus->pcicore,
4661                                                dev->dev->sdev);
4662                 break;
4663 #endif
4664         }
4665
4666         b43_imcfglo_timeouts_workaround(dev);
4667         b43_bluetooth_coext_disable(dev);
4668         if (phy->ops->prepare_hardware) {
4669                 err = phy->ops->prepare_hardware(dev);
4670                 if (err)
4671                         goto err_busdown;
4672         }
4673         err = b43_chip_init(dev);
4674         if (err)
4675                 goto err_busdown;
4676         b43_shm_write16(dev, B43_SHM_SHARED,
4677                         B43_SHM_SH_WLCOREREV, dev->dev->core_rev);
4678         hf = b43_hf_read(dev);
4679         if (phy->type == B43_PHYTYPE_G) {
4680                 hf |= B43_HF_SYMW;
4681                 if (phy->rev == 1)
4682                         hf |= B43_HF_GDCW;
4683                 if (sprom->boardflags_lo & B43_BFL_PACTRL)
4684                         hf |= B43_HF_OFDMPABOOST;
4685         }
4686         if (phy->radio_ver == 0x2050) {
4687                 if (phy->radio_rev == 6)
4688                         hf |= B43_HF_4318TSSI;
4689                 if (phy->radio_rev < 6)
4690                         hf |= B43_HF_VCORECALC;
4691         }
4692         if (sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW)
4693                 hf |= B43_HF_DSCRQ; /* Disable slowclock requests from ucode. */
4694 #ifdef CONFIG_SSB_DRIVER_PCICORE
4695         if (dev->dev->bus_type == B43_BUS_SSB &&
4696             dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI &&
4697             dev->dev->sdev->bus->pcicore.dev->id.revision <= 10)
4698                 hf |= B43_HF_PCISCW; /* PCI slow clock workaround. */
4699 #endif
4700         hf &= ~B43_HF_SKCFPUP;
4701         b43_hf_write(dev, hf);
4702
4703         b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
4704                              B43_DEFAULT_LONG_RETRY_LIMIT);
4705         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
4706         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
4707
4708         /* Disable sending probe responses from firmware.
4709          * Setting the MaxTime to one usec will always trigger
4710          * a timeout, so we never send any probe resp.
4711          * A timeout of zero is infinite. */
4712         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
4713
4714         b43_rate_memory_init(dev);
4715         b43_set_phytxctl_defaults(dev);
4716
4717         /* Minimum Contention Window */
4718         if (phy->type == B43_PHYTYPE_B)
4719                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
4720         else
4721                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
4722         /* Maximum Contention Window */
4723         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
4724
4725         if (b43_bus_host_is_pcmcia(dev->dev) ||
4726             b43_bus_host_is_sdio(dev->dev)) {
4727                 dev->__using_pio_transfers = true;
4728                 err = b43_pio_init(dev);
4729         } else if (dev->use_pio) {
4730                 b43warn(dev->wl, "Forced PIO by use_pio module parameter. "
4731                         "This should not be needed and will result in lower "
4732                         "performance.\n");
4733                 dev->__using_pio_transfers = true;
4734                 err = b43_pio_init(dev);
4735         } else {
4736                 dev->__using_pio_transfers = false;
4737                 err = b43_dma_init(dev);
4738         }
4739         if (err)
4740                 goto err_chip_exit;
4741         b43_qos_init(dev);
4742         b43_set_synth_pu_delay(dev, 1);
4743         b43_bluetooth_coext_enable(dev);
4744
4745         b43_bus_powerup(dev, !(sprom->boardflags_lo & B43_BFL_XTAL_NOSLOW));
4746         b43_upload_card_macaddress(dev);
4747         b43_security_init(dev);
4748
4749         ieee80211_wake_queues(dev->wl->hw);
4750
4751         b43_set_status(dev, B43_STAT_INITIALIZED);
4752
4753         /* Register HW RNG driver */
4754         b43_rng_init(dev->wl);
4755
4756 out:
4757         return err;
4758
4759 err_chip_exit:
4760         b43_chip_exit(dev);
4761 err_busdown:
4762         b43_bus_may_powerdown(dev);
4763         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
4764         return err;
4765 }
4766
4767 static int b43_op_add_interface(struct ieee80211_hw *hw,
4768                                 struct ieee80211_vif *vif)
4769 {
4770         struct b43_wl *wl = hw_to_b43_wl(hw);
4771         struct b43_wldev *dev;
4772         int err = -EOPNOTSUPP;
4773
4774         /* TODO: allow WDS/AP devices to coexist */
4775
4776         if (vif->type != NL80211_IFTYPE_AP &&
4777             vif->type != NL80211_IFTYPE_MESH_POINT &&
4778             vif->type != NL80211_IFTYPE_STATION &&
4779             vif->type != NL80211_IFTYPE_WDS &&
4780             vif->type != NL80211_IFTYPE_ADHOC)
4781                 return -EOPNOTSUPP;
4782
4783         mutex_lock(&wl->mutex);
4784         if (wl->operating)
4785                 goto out_mutex_unlock;
4786
4787         b43dbg(wl, "Adding Interface type %d\n", vif->type);
4788
4789         dev = wl->current_dev;
4790         wl->operating = true;
4791         wl->vif = vif;
4792         wl->if_type = vif->type;
4793         memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
4794
4795         b43_adjust_opmode(dev);
4796         b43_set_pretbtt(dev);
4797         b43_set_synth_pu_delay(dev, 0);
4798         b43_upload_card_macaddress(dev);
4799
4800         err = 0;
4801  out_mutex_unlock:
4802         mutex_unlock(&wl->mutex);
4803
4804         if (err == 0)
4805                 b43_op_bss_info_changed(hw, vif, &vif->bss_conf, ~0);
4806
4807         return err;
4808 }
4809
4810 static void b43_op_remove_interface(struct ieee80211_hw *hw,
4811                                     struct ieee80211_vif *vif)
4812 {
4813         struct b43_wl *wl = hw_to_b43_wl(hw);
4814         struct b43_wldev *dev = wl->current_dev;
4815
4816         b43dbg(wl, "Removing Interface type %d\n", vif->type);
4817
4818         mutex_lock(&wl->mutex);
4819
4820         B43_WARN_ON(!wl->operating);
4821         B43_WARN_ON(wl->vif != vif);
4822         wl->vif = NULL;
4823
4824         wl->operating = false;
4825
4826         b43_adjust_opmode(dev);
4827         memset(wl->mac_addr, 0, ETH_ALEN);
4828         b43_upload_card_macaddress(dev);
4829
4830         mutex_unlock(&wl->mutex);
4831 }
4832
4833 static int b43_op_start(struct ieee80211_hw *hw)
4834 {
4835         struct b43_wl *wl = hw_to_b43_wl(hw);
4836         struct b43_wldev *dev = wl->current_dev;
4837         int did_init = 0;
4838         int err = 0;
4839
4840         /* Kill all old instance specific information to make sure
4841          * the card won't use it in the short timeframe between start
4842          * and mac80211 reconfiguring it. */
4843         memset(wl->bssid, 0, ETH_ALEN);
4844         memset(wl->mac_addr, 0, ETH_ALEN);
4845         wl->filter_flags = 0;
4846         wl->radiotap_enabled = false;
4847         b43_qos_clear(wl);
4848         wl->beacon0_uploaded = false;
4849         wl->beacon1_uploaded = false;
4850         wl->beacon_templates_virgin = true;
4851         wl->radio_enabled = true;
4852
4853         mutex_lock(&wl->mutex);
4854
4855         if (b43_status(dev) < B43_STAT_INITIALIZED) {
4856                 err = b43_wireless_core_init(dev);
4857                 if (err)
4858                         goto out_mutex_unlock;
4859                 did_init = 1;
4860         }
4861
4862         if (b43_status(dev) < B43_STAT_STARTED) {
4863                 err = b43_wireless_core_start(dev);
4864                 if (err) {
4865                         if (did_init)
4866                                 b43_wireless_core_exit(dev);
4867                         goto out_mutex_unlock;
4868                 }
4869         }
4870
4871         /* XXX: only do if device doesn't support rfkill irq */
4872         wiphy_rfkill_start_polling(hw->wiphy);
4873
4874  out_mutex_unlock:
4875         mutex_unlock(&wl->mutex);
4876
4877         /*
4878          * Configuration may have been overwritten during initialization.
4879          * Reload the configuration, but only if initialization was
4880          * successful. Reloading the configuration after a failed init
4881          * may hang the system.
4882          */
4883         if (!err)
4884                 b43_op_config(hw, ~0);
4885
4886         return err;
4887 }
4888
4889 static void b43_op_stop(struct ieee80211_hw *hw)
4890 {
4891         struct b43_wl *wl = hw_to_b43_wl(hw);
4892         struct b43_wldev *dev = wl->current_dev;
4893
4894         cancel_work_sync(&(wl->beacon_update_trigger));
4895
4896         if (!dev)
4897                 goto out;
4898
4899         mutex_lock(&wl->mutex);
4900         if (b43_status(dev) >= B43_STAT_STARTED) {
4901                 dev = b43_wireless_core_stop(dev);
4902                 if (!dev)
4903                         goto out_unlock;
4904         }
4905         b43_wireless_core_exit(dev);
4906         wl->radio_enabled = false;
4907
4908 out_unlock:
4909         mutex_unlock(&wl->mutex);
4910 out:
4911         cancel_work_sync(&(wl->txpower_adjust_work));
4912 }
4913
4914 static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
4915                                  struct ieee80211_sta *sta, bool set)
4916 {
4917         struct b43_wl *wl = hw_to_b43_wl(hw);
4918
4919         /* FIXME: add locking */
4920         b43_update_templates(wl);
4921
4922         return 0;
4923 }
4924
4925 static void b43_op_sta_notify(struct ieee80211_hw *hw,
4926                               struct ieee80211_vif *vif,
4927                               enum sta_notify_cmd notify_cmd,
4928                               struct ieee80211_sta *sta)
4929 {
4930         struct b43_wl *wl = hw_to_b43_wl(hw);
4931
4932         B43_WARN_ON(!vif || wl->vif != vif);
4933 }
4934
4935 static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
4936 {
4937         struct b43_wl *wl = hw_to_b43_wl(hw);
4938         struct b43_wldev *dev;
4939
4940         mutex_lock(&wl->mutex);
4941         dev = wl->current_dev;
4942         if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4943                 /* Disable CFP update during scan on other channels. */
4944                 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
4945         }
4946         mutex_unlock(&wl->mutex);
4947 }
4948
4949 static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
4950 {
4951         struct b43_wl *wl = hw_to_b43_wl(hw);
4952         struct b43_wldev *dev;
4953
4954         mutex_lock(&wl->mutex);
4955         dev = wl->current_dev;
4956         if (dev && (b43_status(dev) >= B43_STAT_INITIALIZED)) {
4957                 /* Re-enable CFP update. */
4958                 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);
4959         }
4960         mutex_unlock(&wl->mutex);
4961 }
4962
4963 static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
4964                              struct survey_info *survey)
4965 {
4966         struct b43_wl *wl = hw_to_b43_wl(hw);
4967         struct b43_wldev *dev = wl->current_dev;
4968         struct ieee80211_conf *conf = &hw->conf;
4969
4970         if (idx != 0)
4971                 return -ENOENT;
4972
4973         survey->channel = conf->channel;
4974         survey->filled = SURVEY_INFO_NOISE_DBM;
4975         survey->noise = dev->stats.link_noise;
4976
4977         return 0;
4978 }
4979
4980 static const struct ieee80211_ops b43_hw_ops = {
4981         .tx                     = b43_op_tx,
4982         .conf_tx                = b43_op_conf_tx,
4983         .add_interface          = b43_op_add_interface,
4984         .remove_interface       = b43_op_remove_interface,
4985         .config                 = b43_op_config,
4986         .bss_info_changed       = b43_op_bss_info_changed,
4987         .configure_filter       = b43_op_configure_filter,
4988         .set_key                = b43_op_set_key,
4989         .update_tkip_key        = b43_op_update_tkip_key,
4990         .get_stats              = b43_op_get_stats,
4991         .get_tsf                = b43_op_get_tsf,
4992         .set_tsf                = b43_op_set_tsf,
4993         .start                  = b43_op_start,
4994         .stop                   = b43_op_stop,
4995         .set_tim                = b43_op_beacon_set_tim,
4996         .sta_notify             = b43_op_sta_notify,
4997         .sw_scan_start          = b43_op_sw_scan_start_notifier,
4998         .sw_scan_complete       = b43_op_sw_scan_complete_notifier,
4999         .get_survey             = b43_op_get_survey,
5000         .rfkill_poll            = b43_rfkill_poll,
5001 };
5002
5003 /* Hard-reset the chip. Do not call this directly.
5004  * Use b43_controller_restart()
5005  */
5006 static void b43_chip_reset(struct work_struct *work)
5007 {
5008         struct b43_wldev *dev =
5009             container_of(work, struct b43_wldev, restart_work);
5010         struct b43_wl *wl = dev->wl;
5011         int err = 0;
5012         int prev_status;
5013
5014         mutex_lock(&wl->mutex);
5015
5016         prev_status = b43_status(dev);
5017         /* Bring the device down... */
5018         if (prev_status >= B43_STAT_STARTED) {
5019                 dev = b43_wireless_core_stop(dev);
5020                 if (!dev) {
5021                         err = -ENODEV;
5022                         goto out;
5023                 }
5024         }
5025         if (prev_status >= B43_STAT_INITIALIZED)
5026                 b43_wireless_core_exit(dev);
5027
5028         /* ...and up again. */
5029         if (prev_status >= B43_STAT_INITIALIZED) {
5030                 err = b43_wireless_core_init(dev);
5031                 if (err)
5032                         goto out;
5033         }
5034         if (prev_status >= B43_STAT_STARTED) {
5035                 err = b43_wireless_core_start(dev);
5036                 if (err) {
5037                         b43_wireless_core_exit(dev);
5038                         goto out;
5039                 }
5040         }
5041 out:
5042         if (err)
5043                 wl->current_dev = NULL; /* Failed to init the dev. */
5044         mutex_unlock(&wl->mutex);
5045
5046         if (err) {
5047                 b43err(wl, "Controller restart FAILED\n");
5048                 return;
5049         }
5050
5051         /* reload configuration */
5052         b43_op_config(wl->hw, ~0);
5053         if (wl->vif)
5054                 b43_op_bss_info_changed(wl->hw, wl->vif, &wl->vif->bss_conf, ~0);
5055
5056         b43info(wl, "Controller restarted\n");
5057 }
5058
5059 static int b43_setup_bands(struct b43_wldev *dev,
5060                            bool have_2ghz_phy, bool have_5ghz_phy)
5061 {
5062         struct ieee80211_hw *hw = dev->wl->hw;
5063
5064         if (have_2ghz_phy)
5065                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &b43_band_2GHz;
5066         if (dev->phy.type == B43_PHYTYPE_N) {
5067                 if (have_5ghz_phy)
5068                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_nphy;
5069         } else {
5070                 if (have_5ghz_phy)
5071                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &b43_band_5GHz_aphy;
5072         }
5073
5074         dev->phy.supports_2ghz = have_2ghz_phy;
5075         dev->phy.supports_5ghz = have_5ghz_phy;
5076
5077         return 0;
5078 }
5079
5080 static void b43_wireless_core_detach(struct b43_wldev *dev)
5081 {
5082         /* We release firmware that late to not be required to re-request
5083          * is all the time when we reinit the core. */
5084         b43_release_firmware(dev);
5085         b43_phy_free(dev);
5086 }
5087
5088 static int b43_wireless_core_attach(struct b43_wldev *dev)
5089 {
5090         struct b43_wl *wl = dev->wl;
5091         struct pci_dev *pdev = NULL;
5092         int err;
5093         u32 tmp;
5094         bool have_2ghz_phy = false, have_5ghz_phy = false;
5095
5096         /* Do NOT do any device initialization here.
5097          * Do it in wireless_core_init() instead.
5098          * This function is for gathering basic information about the HW, only.
5099          * Also some structs may be set up here. But most likely you want to have
5100          * that in core_init(), too.
5101          */
5102
5103 #ifdef CONFIG_B43_SSB
5104         if (dev->dev->bus_type == B43_BUS_SSB &&
5105             dev->dev->sdev->bus->bustype == SSB_BUSTYPE_PCI)
5106                 pdev = dev->dev->sdev->bus->host_pci;
5107 #endif
5108
5109         err = b43_bus_powerup(dev, 0);
5110         if (err) {
5111                 b43err(wl, "Bus powerup failed\n");
5112                 goto out;
5113         }
5114
5115         /* Get the PHY type. */
5116         switch (dev->dev->bus_type) {
5117 #ifdef CONFIG_B43_BCMA
5118         case B43_BUS_BCMA:
5119                 tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST);
5120                 have_2ghz_phy = !!(tmp & B43_BCMA_IOST_2G_PHY);
5121                 have_5ghz_phy = !!(tmp & B43_BCMA_IOST_5G_PHY);
5122                 break;
5123 #endif
5124 #ifdef CONFIG_B43_SSB
5125         case B43_BUS_SSB:
5126                 if (dev->dev->core_rev >= 5) {
5127                         tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
5128                         have_2ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_2GHZ_PHY);
5129                         have_5ghz_phy = !!(tmp & B43_TMSHIGH_HAVE_5GHZ_PHY);
5130                 } else
5131                         B43_WARN_ON(1);
5132                 break;
5133 #endif
5134         }
5135
5136         dev->phy.gmode = have_2ghz_phy;
5137         dev->phy.radio_on = true;
5138         b43_wireless_core_reset(dev, dev->phy.gmode);
5139
5140         err = b43_phy_versioning(dev);
5141         if (err)
5142                 goto err_powerdown;
5143         /* Check if this device supports multiband. */
5144         if (!pdev ||
5145             (pdev->device != 0x4312 &&
5146              pdev->device != 0x4319 && pdev->device != 0x4324)) {
5147                 /* No multiband support. */
5148                 have_2ghz_phy = false;
5149                 have_5ghz_phy = false;
5150                 switch (dev->phy.type) {
5151                 case B43_PHYTYPE_A:
5152                         have_5ghz_phy = true;
5153                         break;
5154                 case B43_PHYTYPE_LP: //FIXME not always!
5155 #if 0 //FIXME enabling 5GHz causes a NULL pointer dereference
5156                         have_5ghz_phy = 1;
5157 #endif
5158                 case B43_PHYTYPE_G:
5159                 case B43_PHYTYPE_N:
5160                 case B43_PHYTYPE_HT:
5161                 case B43_PHYTYPE_LCN:
5162                         have_2ghz_phy = true;
5163                         break;
5164                 default:
5165                         B43_WARN_ON(1);
5166                 }
5167         }
5168         if (dev->phy.type == B43_PHYTYPE_A) {
5169                 /* FIXME */
5170                 b43err(wl, "IEEE 802.11a devices are unsupported\n");
5171                 err = -EOPNOTSUPP;
5172                 goto err_powerdown;
5173         }
5174         if (1 /* disable A-PHY */) {
5175                 /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
5176                 if (dev->phy.type != B43_PHYTYPE_N &&
5177                     dev->phy.type != B43_PHYTYPE_LP) {
5178                         have_2ghz_phy = true;
5179                         have_5ghz_phy = false;
5180                 }
5181         }
5182
5183         err = b43_phy_allocate(dev);
5184         if (err)
5185                 goto err_powerdown;
5186
5187         dev->phy.gmode = have_2ghz_phy;
5188         b43_wireless_core_reset(dev, dev->phy.gmode);
5189
5190         err = b43_validate_chipaccess(dev);
5191         if (err)
5192                 goto err_phy_free;
5193         err = b43_setup_bands(dev, have_2ghz_phy, have_5ghz_phy);
5194         if (err)
5195                 goto err_phy_free;
5196
5197         /* Now set some default "current_dev" */
5198         if (!wl->current_dev)
5199                 wl->current_dev = dev;
5200         INIT_WORK(&dev->restart_work, b43_chip_reset);
5201
5202         dev->phy.ops->switch_analog(dev, 0);
5203         b43_device_disable(dev, 0);
5204         b43_bus_may_powerdown(dev);
5205
5206 out:
5207         return err;
5208
5209 err_phy_free:
5210         b43_phy_free(dev);
5211 err_powerdown:
5212         b43_bus_may_powerdown(dev);
5213         return err;
5214 }
5215
5216 static void b43_one_core_detach(struct b43_bus_dev *dev)
5217 {
5218         struct b43_wldev *wldev;
5219         struct b43_wl *wl;
5220
5221         /* Do not cancel ieee80211-workqueue based work here.
5222          * See comment in b43_remove(). */
5223
5224         wldev = b43_bus_get_wldev(dev);
5225         wl = wldev->wl;
5226         b43_debugfs_remove_device(wldev);
5227         b43_wireless_core_detach(wldev);
5228         list_del(&wldev->list);
5229         wl->nr_devs--;
5230         b43_bus_set_wldev(dev, NULL);
5231         kfree(wldev);
5232 }
5233
5234 static int b43_one_core_attach(struct b43_bus_dev *dev, struct b43_wl *wl)
5235 {
5236         struct b43_wldev *wldev;
5237         int err = -ENOMEM;
5238
5239         wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
5240         if (!wldev)
5241                 goto out;
5242
5243         wldev->use_pio = b43_modparam_pio;
5244         wldev->dev = dev;
5245         wldev->wl = wl;
5246         b43_set_status(wldev, B43_STAT_UNINIT);
5247         wldev->bad_frames_preempt = modparam_bad_frames_preempt;
5248         INIT_LIST_HEAD(&wldev->list);
5249
5250         err = b43_wireless_core_attach(wldev);
5251         if (err)
5252                 goto err_kfree_wldev;
5253
5254         list_add(&wldev->list, &wl->devlist);
5255         wl->nr_devs++;
5256         b43_bus_set_wldev(dev, wldev);
5257         b43_debugfs_add_device(wldev);
5258
5259       out:
5260         return err;
5261
5262       err_kfree_wldev:
5263         kfree(wldev);
5264         return err;
5265 }
5266
5267 #define IS_PDEV(pdev, _vendor, _device, _subvendor, _subdevice)         ( \
5268         (pdev->vendor == PCI_VENDOR_ID_##_vendor) &&                    \
5269         (pdev->device == _device) &&                                    \
5270         (pdev->subsystem_vendor == PCI_VENDOR_ID_##_subvendor) &&       \
5271         (pdev->subsystem_device == _subdevice)                          )
5272
5273 static void b43_sprom_fixup(struct ssb_bus *bus)
5274 {
5275         struct pci_dev *pdev;
5276
5277         /* boardflags workarounds */
5278         if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
5279             bus->chip_id == 0x4301 && bus->sprom.board_rev == 0x74)
5280                 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
5281         if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
5282             bus->boardinfo.type == 0x4E && bus->sprom.board_rev > 0x40)
5283                 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
5284         if (bus->bustype == SSB_BUSTYPE_PCI) {
5285                 pdev = bus->host_pci;
5286                 if (IS_PDEV(pdev, BROADCOM, 0x4318, ASUSTEK, 0x100F) ||
5287                     IS_PDEV(pdev, BROADCOM, 0x4320,    DELL, 0x0003) ||
5288                     IS_PDEV(pdev, BROADCOM, 0x4320,      HP, 0x12f8) ||
5289                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0015) ||
5290                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0014) ||
5291                     IS_PDEV(pdev, BROADCOM, 0x4320, LINKSYS, 0x0013) ||
5292                     IS_PDEV(pdev, BROADCOM, 0x4320, MOTOROLA, 0x7010))
5293                         bus->sprom.boardflags_lo &= ~B43_BFL_BTCOEXIST;
5294         }
5295 }
5296
5297 static void b43_wireless_exit(struct b43_bus_dev *dev, struct b43_wl *wl)
5298 {
5299         struct ieee80211_hw *hw = wl->hw;
5300
5301         ssb_set_devtypedata(dev->sdev, NULL);
5302         ieee80211_free_hw(hw);
5303 }
5304
5305 static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev)
5306 {
5307         struct ssb_sprom *sprom = dev->bus_sprom;
5308         struct ieee80211_hw *hw;
5309         struct b43_wl *wl;
5310         char chip_name[6];
5311         int queue_num;
5312
5313         hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
5314         if (!hw) {
5315                 b43err(NULL, "Could not allocate ieee80211 device\n");
5316                 return ERR_PTR(-ENOMEM);
5317         }
5318         wl = hw_to_b43_wl(hw);
5319
5320         /* fill hw info */
5321         hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
5322                     IEEE80211_HW_SIGNAL_DBM;
5323
5324         hw->wiphy->interface_modes =
5325                 BIT(NL80211_IFTYPE_AP) |
5326                 BIT(NL80211_IFTYPE_MESH_POINT) |
5327                 BIT(NL80211_IFTYPE_STATION) |
5328                 BIT(NL80211_IFTYPE_WDS) |
5329                 BIT(NL80211_IFTYPE_ADHOC);
5330
5331         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
5332
5333         wl->hw_registred = false;
5334         hw->max_rates = 2;
5335         SET_IEEE80211_DEV(hw, dev->dev);
5336         if (is_valid_ether_addr(sprom->et1mac))
5337                 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
5338         else
5339                 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
5340
5341         /* Initialize struct b43_wl */
5342         wl->hw = hw;
5343         mutex_init(&wl->mutex);
5344         spin_lock_init(&wl->hardirq_lock);
5345         INIT_LIST_HEAD(&wl->devlist);
5346         INIT_WORK(&wl->beacon_update_trigger, b43_beacon_update_trigger_work);
5347         INIT_WORK(&wl->txpower_adjust_work, b43_phy_txpower_adjust_work);
5348         INIT_WORK(&wl->tx_work, b43_tx_work);
5349
5350         /* Initialize queues and flags. */
5351         for (queue_num = 0; queue_num < B43_QOS_QUEUE_NUM; queue_num++) {
5352                 skb_queue_head_init(&wl->tx_queue[queue_num]);
5353                 wl->tx_queue_stopped[queue_num] = 0;
5354         }
5355
5356         snprintf(chip_name, ARRAY_SIZE(chip_name),
5357                  (dev->chip_id > 0x9999) ? "%d" : "%04X", dev->chip_id);
5358         b43info(wl, "Broadcom %s WLAN found (core revision %u)\n", chip_name,
5359                 dev->core_rev);
5360         return wl;
5361 }
5362
5363 #ifdef CONFIG_B43_BCMA
5364 static int b43_bcma_probe(struct bcma_device *core)
5365 {
5366         struct b43_bus_dev *dev;
5367         struct b43_wl *wl;
5368         int err;
5369
5370         dev = b43_bus_dev_bcma_init(core);
5371         if (!dev)
5372                 return -ENODEV;
5373
5374         wl = b43_wireless_init(dev);
5375         if (IS_ERR(wl)) {
5376                 err = PTR_ERR(wl);
5377                 goto bcma_out;
5378         }
5379
5380         err = b43_one_core_attach(dev, wl);
5381         if (err)
5382                 goto bcma_err_wireless_exit;
5383
5384         /* setup and start work to load firmware */
5385         INIT_WORK(&wl->firmware_load, b43_request_firmware);
5386         schedule_work(&wl->firmware_load);
5387
5388 bcma_out:
5389         return err;
5390
5391 bcma_err_wireless_exit:
5392         ieee80211_free_hw(wl->hw);
5393         return err;
5394 }
5395
5396 static void b43_bcma_remove(struct bcma_device *core)
5397 {
5398         struct b43_wldev *wldev = bcma_get_drvdata(core);
5399         struct b43_wl *wl = wldev->wl;
5400
5401         /* We must cancel any work here before unregistering from ieee80211,
5402          * as the ieee80211 unreg will destroy the workqueue. */
5403         cancel_work_sync(&wldev->restart_work);
5404
5405         B43_WARN_ON(!wl);
5406         if (wl->current_dev == wldev && wl->hw_registred) {
5407                 b43_leds_stop(wldev);
5408                 ieee80211_unregister_hw(wl->hw);
5409         }
5410
5411         b43_one_core_detach(wldev->dev);
5412
5413         b43_leds_unregister(wl);
5414
5415         ieee80211_free_hw(wl->hw);
5416 }
5417
5418 static struct bcma_driver b43_bcma_driver = {
5419         .name           = KBUILD_MODNAME,
5420         .id_table       = b43_bcma_tbl,
5421         .probe          = b43_bcma_probe,
5422         .remove         = b43_bcma_remove,
5423 };
5424 #endif
5425
5426 #ifdef CONFIG_B43_SSB
5427 static
5428 int b43_ssb_probe(struct ssb_device *sdev, const struct ssb_device_id *id)
5429 {
5430         struct b43_bus_dev *dev;
5431         struct b43_wl *wl;
5432         int err;
5433         int first = 0;
5434
5435         dev = b43_bus_dev_ssb_init(sdev);
5436         if (!dev)
5437                 return -ENOMEM;
5438
5439         wl = ssb_get_devtypedata(sdev);
5440         if (!wl) {
5441                 /* Probing the first core. Must setup common struct b43_wl */
5442                 first = 1;
5443                 b43_sprom_fixup(sdev->bus);
5444                 wl = b43_wireless_init(dev);
5445                 if (IS_ERR(wl)) {
5446                         err = PTR_ERR(wl);
5447                         goto out;
5448                 }
5449                 ssb_set_devtypedata(sdev, wl);
5450                 B43_WARN_ON(ssb_get_devtypedata(sdev) != wl);
5451         }
5452         err = b43_one_core_attach(dev, wl);
5453         if (err)
5454                 goto err_wireless_exit;
5455
5456         /* setup and start work to load firmware */
5457         INIT_WORK(&wl->firmware_load, b43_request_firmware);
5458         schedule_work(&wl->firmware_load);
5459
5460       out:
5461         return err;
5462
5463       err_wireless_exit:
5464         if (first)
5465                 b43_wireless_exit(dev, wl);
5466         return err;
5467 }
5468
5469 static void b43_ssb_remove(struct ssb_device *sdev)
5470 {
5471         struct b43_wl *wl = ssb_get_devtypedata(sdev);
5472         struct b43_wldev *wldev = ssb_get_drvdata(sdev);
5473         struct b43_bus_dev *dev = wldev->dev;
5474
5475         /* We must cancel any work here before unregistering from ieee80211,
5476          * as the ieee80211 unreg will destroy the workqueue. */
5477         cancel_work_sync(&wldev->restart_work);
5478
5479         B43_WARN_ON(!wl);
5480         if (wl->current_dev == wldev && wl->hw_registred) {
5481                 b43_leds_stop(wldev);
5482                 ieee80211_unregister_hw(wl->hw);
5483         }
5484
5485         b43_one_core_detach(dev);
5486
5487         if (list_empty(&wl->devlist)) {
5488                 b43_leds_unregister(wl);
5489                 /* Last core on the chip unregistered.
5490                  * We can destroy common struct b43_wl.
5491                  */
5492                 b43_wireless_exit(dev, wl);
5493         }
5494 }
5495
5496 static struct ssb_driver b43_ssb_driver = {
5497         .name           = KBUILD_MODNAME,
5498         .id_table       = b43_ssb_tbl,
5499         .probe          = b43_ssb_probe,
5500         .remove         = b43_ssb_remove,
5501 };
5502 #endif /* CONFIG_B43_SSB */
5503
5504 /* Perform a hardware reset. This can be called from any context. */
5505 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
5506 {
5507         /* Must avoid requeueing, if we are in shutdown. */
5508         if (b43_status(dev) < B43_STAT_INITIALIZED)
5509                 return;
5510         b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
5511         ieee80211_queue_work(dev->wl->hw, &dev->restart_work);
5512 }
5513
5514 static void b43_print_driverinfo(void)
5515 {
5516         const char *feat_pci = "", *feat_pcmcia = "", *feat_nphy = "",
5517                    *feat_leds = "", *feat_sdio = "";
5518
5519 #ifdef CONFIG_B43_PCI_AUTOSELECT
5520         feat_pci = "P";
5521 #endif
5522 #ifdef CONFIG_B43_PCMCIA
5523         feat_pcmcia = "M";
5524 #endif
5525 #ifdef CONFIG_B43_PHY_N
5526         feat_nphy = "N";
5527 #endif
5528 #ifdef CONFIG_B43_LEDS
5529         feat_leds = "L";
5530 #endif
5531 #ifdef CONFIG_B43_SDIO
5532         feat_sdio = "S";
5533 #endif
5534         printk(KERN_INFO "Broadcom 43xx driver loaded "
5535                "[ Features: %s%s%s%s%s ]\n",
5536                feat_pci, feat_pcmcia, feat_nphy,
5537                feat_leds, feat_sdio);
5538 }
5539
5540 static int __init b43_init(void)
5541 {
5542         int err;
5543
5544         b43_debugfs_init();
5545         err = b43_pcmcia_init();
5546         if (err)
5547                 goto err_dfs_exit;
5548         err = b43_sdio_init();
5549         if (err)
5550                 goto err_pcmcia_exit;
5551 #ifdef CONFIG_B43_BCMA
5552         err = bcma_driver_register(&b43_bcma_driver);
5553         if (err)
5554                 goto err_sdio_exit;
5555 #endif
5556 #ifdef CONFIG_B43_SSB
5557         err = ssb_driver_register(&b43_ssb_driver);
5558         if (err)
5559                 goto err_bcma_driver_exit;
5560 #endif
5561         b43_print_driverinfo();
5562
5563         return err;
5564
5565 #ifdef CONFIG_B43_SSB
5566 err_bcma_driver_exit:
5567 #endif
5568 #ifdef CONFIG_B43_BCMA
5569         bcma_driver_unregister(&b43_bcma_driver);
5570 err_sdio_exit:
5571 #endif
5572         b43_sdio_exit();
5573 err_pcmcia_exit:
5574         b43_pcmcia_exit();
5575 err_dfs_exit:
5576         b43_debugfs_exit();
5577         return err;
5578 }
5579
5580 static void __exit b43_exit(void)
5581 {
5582 #ifdef CONFIG_B43_SSB
5583         ssb_driver_unregister(&b43_ssb_driver);
5584 #endif
5585 #ifdef CONFIG_B43_BCMA
5586         bcma_driver_unregister(&b43_bcma_driver);
5587 #endif
5588         b43_sdio_exit();
5589         b43_pcmcia_exit();
5590         b43_debugfs_exit();
5591 }
5592
5593 module_init(b43_init)
5594 module_exit(b43_exit)