git.oblomov.eu Git - linux-2.6/blob - 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 <st3@riseup.net>
   7   Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
   8   Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
   9   Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
  10
  11   Some parts of the code in this file are derived from the ipw2200
  12   driver  Copyright(c) 2003 - 2004 Intel Corporation.
  13
  14   This program is free software; you can redistribute it and/or modify
  15   it under the terms of the GNU General Public License as published by
  16   the Free Software Foundation; either version 2 of the License, or
  17   (at your option) any later version.
  18
  19   This program is distributed in the hope that it will be useful,
  20   but WITHOUT ANY WARRANTY; without even the implied warranty of
  21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22   GNU General Public License for more details.
  23
  24   You should have received a copy of the GNU General Public License
  25   along with this program; see the file COPYING.  If not, write to
  26   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  27   Boston, MA 02110-1301, USA.
  28
  29 */
  30
  31 #include <linux/delay.h>
  32 #include <linux/init.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/if_arp.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/version.h>
  37 #include <linux/firmware.h>
  38 #include <linux/wireless.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/skbuff.h>
  41 #include <linux/dma-mapping.h>
  42 #include <asm/unaligned.h>
  43
  44 #include "b43.h"
  45 #include "main.h"
  46 #include "debugfs.h"
  47 #include "phy.h"
  48 #include "dma.h"
  49 #include "pio.h"
  50 #include "sysfs.h"
  51 #include "xmit.h"
  52 #include "lo.h"
  53 #include "pcmcia.h"
  54
  55 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
  56 MODULE_AUTHOR("Martin Langer");
  57 MODULE_AUTHOR("Stefano Brivio");
  58 MODULE_AUTHOR("Michael Buesch");
  59 MODULE_LICENSE("GPL");
  60
  61 extern char *nvram_get(char *name);
  62
  63 #if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO)
  64 static int modparam_pio;
  65 module_param_named(pio, modparam_pio, int, 0444);
  66 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
  67 #elif defined(CONFIG_B43_DMA)
  68 # define modparam_pio   0
  69 #elif defined(CONFIG_B43_PIO)
  70 # define modparam_pio   1
  71 #endif
  72
  73 static int modparam_bad_frames_preempt;
  74 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
  75 MODULE_PARM_DESC(bad_frames_preempt,
  76                  "enable(1) / disable(0) Bad Frames Preemption");
  77
  78 static int modparam_short_retry = B43_DEFAULT_SHORT_RETRY_LIMIT;
  79 module_param_named(short_retry, modparam_short_retry, int, 0444);
  80 MODULE_PARM_DESC(short_retry, "Short-Retry-Limit (0 - 15)");
  81
  82 static int modparam_long_retry = B43_DEFAULT_LONG_RETRY_LIMIT;
  83 module_param_named(long_retry, modparam_long_retry, int, 0444);
  84 MODULE_PARM_DESC(long_retry, "Long-Retry-Limit (0 - 15)");
  85
  86 static char modparam_fwpostfix[16];
  87 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
  88 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
  89
  90 static int modparam_hwpctl;
  91 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
  92 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
  93
  94 static int modparam_nohwcrypt;
  95 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
  96 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  97
  98 static const struct ssb_device_id b43_ssb_tbl[] = {
  99         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
 100         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
 101         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
 102         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
 103         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
 104         SSB_DEVTABLE_END
 105 };
 106
 107 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
 108
 109 /* Channel and ratetables are shared for all devices.
 110  * They can't be const, because ieee80211 puts some precalculated
 111  * data in there. This data is the same for all devices, so we don't
 112  * get concurrency issues */
 113 #define RATETAB_ENT(_rateid, _flags) \
 114         {                                                       \
 115                 .rate   = B43_RATE_TO_BASE100KBPS(_rateid),     \
 116                 .val    = (_rateid),                            \
 117                 .val2   = (_rateid),                            \
 118                 .flags  = (_flags),                             \
 119         }
 120 static struct ieee80211_rate __b43_ratetable[] = {
 121         RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK),
 122         RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2),
 123         RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2),
 124         RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2),
 125         RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM),
 126         RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM),
 127         RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM),
 128         RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM),
 129         RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM),
 130         RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM),
 131         RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM),
 132         RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM),
 133 };
 134
 135 #define b43_a_ratetable         (__b43_ratetable + 4)
 136 #define b43_a_ratetable_size    8
 137 #define b43_b_ratetable         (__b43_ratetable + 0)
 138 #define b43_b_ratetable_size    4
 139 #define b43_g_ratetable         (__b43_ratetable + 0)
 140 #define b43_g_ratetable_size    12
 141
 142 #define CHANTAB_ENT(_chanid, _freq) \
 143         {                                                       \
 144                 .chan   = (_chanid),                            \
 145                 .freq   = (_freq),                              \
 146                 .val    = (_chanid),                            \
 147                 .flag   = IEEE80211_CHAN_W_SCAN |               \
 148                           IEEE80211_CHAN_W_ACTIVE_SCAN |        \
 149                           IEEE80211_CHAN_W_IBSS,                \
 150                 .power_level    = 0xFF,                         \
 151                 .antenna_max    = 0xFF,                         \
 152         }
 153 static struct ieee80211_channel b43_bg_chantable[] = {
 154         CHANTAB_ENT(1, 2412),
 155         CHANTAB_ENT(2, 2417),
 156         CHANTAB_ENT(3, 2422),
 157         CHANTAB_ENT(4, 2427),
 158         CHANTAB_ENT(5, 2432),
 159         CHANTAB_ENT(6, 2437),
 160         CHANTAB_ENT(7, 2442),
 161         CHANTAB_ENT(8, 2447),
 162         CHANTAB_ENT(9, 2452),
 163         CHANTAB_ENT(10, 2457),
 164         CHANTAB_ENT(11, 2462),
 165         CHANTAB_ENT(12, 2467),
 166         CHANTAB_ENT(13, 2472),
 167         CHANTAB_ENT(14, 2484),
 168 };
 169
 170 #define b43_bg_chantable_size   ARRAY_SIZE(b43_bg_chantable)
 171 static struct ieee80211_channel b43_a_chantable[] = {
 172         CHANTAB_ENT(36, 5180),
 173         CHANTAB_ENT(40, 5200),
 174         CHANTAB_ENT(44, 5220),
 175         CHANTAB_ENT(48, 5240),
 176         CHANTAB_ENT(52, 5260),
 177         CHANTAB_ENT(56, 5280),
 178         CHANTAB_ENT(60, 5300),
 179         CHANTAB_ENT(64, 5320),
 180         CHANTAB_ENT(149, 5745),
 181         CHANTAB_ENT(153, 5765),
 182         CHANTAB_ENT(157, 5785),
 183         CHANTAB_ENT(161, 5805),
 184         CHANTAB_ENT(165, 5825),
 185 };
 186
 187 #define b43_a_chantable_size    ARRAY_SIZE(b43_a_chantable)
 188
 189 static void b43_wireless_core_exit(struct b43_wldev *dev);
 190 static int b43_wireless_core_init(struct b43_wldev *dev);
 191 static void b43_wireless_core_stop(struct b43_wldev *dev);
 192 static int b43_wireless_core_start(struct b43_wldev *dev);
 193
 194 static int b43_ratelimit(struct b43_wl *wl)
 195 {
 196         if (!wl || !wl->current_dev)
 197                 return 1;
 198         if (b43_status(wl->current_dev) < B43_STAT_STARTED)
 199                 return 1;
 200         /* We are up and running.
 201          * Ratelimit the messages to avoid DoS over the net. */
 202         return net_ratelimit();
 203 }
 204
 205 void b43info(struct b43_wl *wl, const char *fmt, ...)
 206 {
 207         va_list args;
 208
 209         if (!b43_ratelimit(wl))
 210                 return;
 211         va_start(args, fmt);
 212         printk(KERN_INFO "b43-%s: ",
 213                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 214         vprintk(fmt, args);
 215         va_end(args);
 216 }
 217
 218 void b43err(struct b43_wl *wl, const char *fmt, ...)
 219 {
 220         va_list args;
 221
 222         if (!b43_ratelimit(wl))
 223                 return;
 224         va_start(args, fmt);
 225         printk(KERN_ERR "b43-%s ERROR: ",
 226                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 227         vprintk(fmt, args);
 228         va_end(args);
 229 }
 230
 231 void b43warn(struct b43_wl *wl, const char *fmt, ...)
 232 {
 233         va_list args;
 234
 235         if (!b43_ratelimit(wl))
 236                 return;
 237         va_start(args, fmt);
 238         printk(KERN_WARNING "b43-%s warning: ",
 239                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 240         vprintk(fmt, args);
 241         va_end(args);
 242 }
 243
 244 #if B43_DEBUG
 245 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
 246 {
 247         va_list args;
 248
 249         va_start(args, fmt);
 250         printk(KERN_DEBUG "b43-%s debug: ",
 251                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 252         vprintk(fmt, args);
 253         va_end(args);
 254 }
 255 #endif /* DEBUG */
 256
 257 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
 258 {
 259         u32 macctl;
 260
 261         B43_WARN_ON(offset % 4 != 0);
 262
 263         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 264         if (macctl & B43_MACCTL_BE)
 265                 val = swab32(val);
 266
 267         b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
 268         mmiowb();
 269         b43_write32(dev, B43_MMIO_RAM_DATA, val);
 270 }
 271
 272 static inline
 273     void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset)
 274 {
 275         u32 control;
 276
 277         /* "offset" is the WORD offset. */
 278
 279         control = routing;
 280         control <<= 16;
 281         control |= offset;
 282         b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
 283 }
 284
 285 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 286 {
 287         u32 ret;
 288
 289         if (routing == B43_SHM_SHARED) {
 290                 B43_WARN_ON(offset & 0x0001);
 291                 if (offset & 0x0003) {
 292                         /* Unaligned access */
 293                         b43_shm_control_word(dev, routing, offset >> 2);
 294                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 295                         ret <<= 16;
 296                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 297                         ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
 298
 299                         return ret;
 300                 }
 301                 offset >>= 2;
 302         }
 303         b43_shm_control_word(dev, routing, offset);
 304         ret = b43_read32(dev, B43_MMIO_SHM_DATA);
 305
 306         return ret;
 307 }
 308
 309 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
 310 {
 311         u16 ret;
 312
 313         if (routing == B43_SHM_SHARED) {
 314                 B43_WARN_ON(offset & 0x0001);
 315                 if (offset & 0x0003) {
 316                         /* Unaligned access */
 317                         b43_shm_control_word(dev, routing, offset >> 2);
 318                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 319
 320                         return ret;
 321                 }
 322                 offset >>= 2;
 323         }
 324         b43_shm_control_word(dev, routing, offset);
 325         ret = b43_read16(dev, B43_MMIO_SHM_DATA);
 326
 327         return ret;
 328 }
 329
 330 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 331 {
 332         if (routing == B43_SHM_SHARED) {
 333                 B43_WARN_ON(offset & 0x0001);
 334                 if (offset & 0x0003) {
 335                         /* Unaligned access */
 336                         b43_shm_control_word(dev, routing, offset >> 2);
 337                         mmiowb();
 338                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
 339                                     (value >> 16) & 0xffff);
 340                         mmiowb();
 341                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 342                         mmiowb();
 343                         b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
 344                         return;
 345                 }
 346                 offset >>= 2;
 347         }
 348         b43_shm_control_word(dev, routing, offset);
 349         mmiowb();
 350         b43_write32(dev, B43_MMIO_SHM_DATA, value);
 351 }
 352
 353 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 354 {
 355         if (routing == B43_SHM_SHARED) {
 356                 B43_WARN_ON(offset & 0x0001);
 357                 if (offset & 0x0003) {
 358                         /* Unaligned access */
 359                         b43_shm_control_word(dev, routing, offset >> 2);
 360                         mmiowb();
 361                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
 362                         return;
 363                 }
 364                 offset >>= 2;
 365         }
 366         b43_shm_control_word(dev, routing, offset);
 367         mmiowb();
 368         b43_write16(dev, B43_MMIO_SHM_DATA, value);
 369 }
 370
 371 /* Read HostFlags */
 372 u32 b43_hf_read(struct b43_wldev * dev)
 373 {
 374         u32 ret;
 375
 376         ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
 377         ret <<= 16;
 378         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
 379
 380         return ret;
 381 }
 382
 383 /* Write HostFlags */
 384 void b43_hf_write(struct b43_wldev *dev, u32 value)
 385 {
 386         b43_shm_write16(dev, B43_SHM_SHARED,
 387                         B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
 388         b43_shm_write16(dev, B43_SHM_SHARED,
 389                         B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
 390 }
 391
 392 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
 393 {
 394         /* We need to be careful. As we read the TSF from multiple
 395          * registers, we should take care of register overflows.
 396          * In theory, the whole tsf read process should be atomic.
 397          * We try to be atomic here, by restaring the read process,
 398          * if any of the high registers changed (overflew).
 399          */
 400         if (dev->dev->id.revision >= 3) {
 401                 u32 low, high, high2;
 402
 403                 do {
 404                         high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 405                         low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
 406                         high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 407                 } while (unlikely(high != high2));
 408
 409                 *tsf = high;
 410                 *tsf <<= 32;
 411                 *tsf |= low;
 412         } else {
 413                 u64 tmp;
 414                 u16 v0, v1, v2, v3;
 415                 u16 test1, test2, test3;
 416
 417                 do {
 418                         v3 = b43_read16(dev, B43_MMIO_TSF_3);
 419                         v2 = b43_read16(dev, B43_MMIO_TSF_2);
 420                         v1 = b43_read16(dev, B43_MMIO_TSF_1);
 421                         v0 = b43_read16(dev, B43_MMIO_TSF_0);
 422
 423                         test3 = b43_read16(dev, B43_MMIO_TSF_3);
 424                         test2 = b43_read16(dev, B43_MMIO_TSF_2);
 425                         test1 = b43_read16(dev, B43_MMIO_TSF_1);
 426                 } while (v3 != test3 || v2 != test2 || v1 != test1);
 427
 428                 *tsf = v3;
 429                 *tsf <<= 48;
 430                 tmp = v2;
 431                 tmp <<= 32;
 432                 *tsf |= tmp;
 433                 tmp = v1;
 434                 tmp <<= 16;
 435                 *tsf |= tmp;
 436                 *tsf |= v0;
 437         }
 438 }
 439
 440 static void b43_time_lock(struct b43_wldev *dev)
 441 {
 442         u32 macctl;
 443
 444         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 445         macctl |= B43_MACCTL_TBTTHOLD;
 446         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 447         /* Commit the write */
 448         b43_read32(dev, B43_MMIO_MACCTL);
 449 }
 450
 451 static void b43_time_unlock(struct b43_wldev *dev)
 452 {
 453         u32 macctl;
 454
 455         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 456         macctl &= ~B43_MACCTL_TBTTHOLD;
 457         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 458         /* Commit the write */
 459         b43_read32(dev, B43_MMIO_MACCTL);
 460 }
 461
 462 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
 463 {
 464         /* Be careful with the in-progress timer.
 465          * First zero out the low register, so we have a full
 466          * register-overflow duration to complete the operation.
 467          */
 468         if (dev->dev->id.revision >= 3) {
 469                 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
 470                 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
 471
 472                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
 473                 mmiowb();
 474                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
 475                 mmiowb();
 476                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
 477         } else {
 478                 u16 v0 = (tsf & 0x000000000000FFFFULL);
 479                 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
 480                 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
 481                 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
 482
 483                 b43_write16(dev, B43_MMIO_TSF_0, 0);
 484                 mmiowb();
 485                 b43_write16(dev, B43_MMIO_TSF_3, v3);
 486                 mmiowb();
 487                 b43_write16(dev, B43_MMIO_TSF_2, v2);
 488                 mmiowb();
 489                 b43_write16(dev, B43_MMIO_TSF_1, v1);
 490                 mmiowb();
 491                 b43_write16(dev, B43_MMIO_TSF_0, v0);
 492         }
 493 }
 494
 495 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
 496 {
 497         b43_time_lock(dev);
 498         b43_tsf_write_locked(dev, tsf);
 499         b43_time_unlock(dev);
 500 }
 501
 502 static
 503 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
 504 {
 505         static const u8 zero_addr[ETH_ALEN] = { 0 };
 506         u16 data;
 507
 508         if (!mac)
 509                 mac = zero_addr;
 510
 511         offset |= 0x0020;
 512         b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
 513
 514         data = mac[0];
 515         data |= mac[1] << 8;
 516         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 517         data = mac[2];
 518         data |= mac[3] << 8;
 519         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 520         data = mac[4];
 521         data |= mac[5] << 8;
 522         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 523 }
 524
 525 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
 526 {
 527         const u8 *mac;
 528         const u8 *bssid;
 529         u8 mac_bssid[ETH_ALEN * 2];
 530         int i;
 531         u32 tmp;
 532
 533         bssid = dev->wl->bssid;
 534         mac = dev->wl->mac_addr;
 535
 536         b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
 537
 538         memcpy(mac_bssid, mac, ETH_ALEN);
 539         memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
 540
 541         /* Write our MAC address and BSSID to template ram */
 542         for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
 543                 tmp = (u32) (mac_bssid[i + 0]);
 544                 tmp |= (u32) (mac_bssid[i + 1]) << 8;
 545                 tmp |= (u32) (mac_bssid[i + 2]) << 16;
 546                 tmp |= (u32) (mac_bssid[i + 3]) << 24;
 547                 b43_ram_write(dev, 0x20 + i, tmp);
 548         }
 549 }
 550
 551 static void b43_upload_card_macaddress(struct b43_wldev *dev)
 552 {
 553         b43_write_mac_bssid_templates(dev);
 554         b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
 555 }
 556
 557 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
 558 {
 559         /* slot_time is in usec. */
 560         if (dev->phy.type != B43_PHYTYPE_G)
 561                 return;
 562         b43_write16(dev, 0x684, 510 + slot_time);
 563         b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
 564 }
 565
 566 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
 567 {
 568         b43_set_slot_time(dev, 9);
 569         dev->short_slot = 1;
 570 }
 571
 572 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
 573 {
 574         b43_set_slot_time(dev, 20);
 575         dev->short_slot = 0;
 576 }
 577
 578 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
 579  * Returns the _previously_ enabled IRQ mask.
 580  */
 581 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
 582 {
 583         u32 old_mask;
 584
 585         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 586         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
 587
 588         return old_mask;
 589 }
 590
 591 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
 592  * Returns the _previously_ enabled IRQ mask.
 593  */
 594 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
 595 {
 596         u32 old_mask;
 597
 598         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 599         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
 600
 601         return old_mask;
 602 }
 603
 604 /* Synchronize IRQ top- and bottom-half.
 605  * IRQs must be masked before calling this.
 606  * This must not be called with the irq_lock held.
 607  */
 608 static void b43_synchronize_irq(struct b43_wldev *dev)
 609 {
 610         synchronize_irq(dev->dev->irq);
 611         tasklet_kill(&dev->isr_tasklet);
 612 }
 613
 614 /* DummyTransmission function, as documented on
 615  * http://bcm-specs.sipsolutions.net/DummyTransmission
 616  */
 617 void b43_dummy_transmission(struct b43_wldev *dev)
 618 {
 619         struct b43_phy *phy = &dev->phy;
 620         unsigned int i, max_loop;
 621         u16 value;
 622         u32 buffer[5] = {
 623                 0x00000000,
 624                 0x00D40000,
 625                 0x00000000,
 626                 0x01000000,
 627                 0x00000000,
 628         };
 629
 630         switch (phy->type) {
 631         case B43_PHYTYPE_A:
 632                 max_loop = 0x1E;
 633                 buffer[0] = 0x000201CC;
 634                 break;
 635         case B43_PHYTYPE_B:
 636         case B43_PHYTYPE_G:
 637                 max_loop = 0xFA;
 638                 buffer[0] = 0x000B846E;
 639                 break;
 640         default:
 641                 B43_WARN_ON(1);
 642                 return;
 643         }
 644
 645         for (i = 0; i < 5; i++)
 646                 b43_ram_write(dev, i * 4, buffer[i]);
 647
 648         /* Commit writes */
 649         b43_read32(dev, B43_MMIO_MACCTL);
 650
 651         b43_write16(dev, 0x0568, 0x0000);
 652         b43_write16(dev, 0x07C0, 0x0000);
 653         value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
 654         b43_write16(dev, 0x050C, value);
 655         b43_write16(dev, 0x0508, 0x0000);
 656         b43_write16(dev, 0x050A, 0x0000);
 657         b43_write16(dev, 0x054C, 0x0000);
 658         b43_write16(dev, 0x056A, 0x0014);
 659         b43_write16(dev, 0x0568, 0x0826);
 660         b43_write16(dev, 0x0500, 0x0000);
 661         b43_write16(dev, 0x0502, 0x0030);
 662
 663         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 664                 b43_radio_write16(dev, 0x0051, 0x0017);
 665         for (i = 0x00; i < max_loop; i++) {
 666                 value = b43_read16(dev, 0x050E);
 667                 if (value & 0x0080)
 668                         break;
 669                 udelay(10);
 670         }
 671         for (i = 0x00; i < 0x0A; i++) {
 672                 value = b43_read16(dev, 0x050E);
 673                 if (value & 0x0400)
 674                         break;
 675                 udelay(10);
 676         }
 677         for (i = 0x00; i < 0x0A; i++) {
 678                 value = b43_read16(dev, 0x0690);
 679                 if (!(value & 0x0100))
 680                         break;
 681                 udelay(10);
 682         }
 683         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 684                 b43_radio_write16(dev, 0x0051, 0x0037);
 685 }
 686
 687 static void key_write(struct b43_wldev *dev,
 688                       u8 index, u8 algorithm, const u8 * key)
 689 {
 690         unsigned int i;
 691         u32 offset;
 692         u16 value;
 693         u16 kidx;
 694
 695         /* Key index/algo block */
 696         kidx = b43_kidx_to_fw(dev, index);
 697         value = ((kidx << 4) | algorithm);
 698         b43_shm_write16(dev, B43_SHM_SHARED,
 699                         B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
 700
 701         /* Write the key to the Key Table Pointer offset */
 702         offset = dev->ktp + (index * B43_SEC_KEYSIZE);
 703         for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
 704                 value = key[i];
 705                 value |= (u16) (key[i + 1]) << 8;
 706                 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
 707         }
 708 }
 709
 710 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
 711 {
 712         u32 addrtmp[2] = { 0, 0, };
 713         u8 per_sta_keys_start = 8;
 714
 715         if (b43_new_kidx_api(dev))
 716                 per_sta_keys_start = 4;
 717
 718         B43_WARN_ON(index < per_sta_keys_start);
 719         /* We have two default TX keys and possibly two default RX keys.
 720          * Physical mac 0 is mapped to physical key 4 or 8, depending
 721          * on the firmware version.
 722          * So we must adjust the index here.
 723          */
 724         index -= per_sta_keys_start;
 725
 726         if (addr) {
 727                 addrtmp[0] = addr[0];
 728                 addrtmp[0] |= ((u32) (addr[1]) << 8);
 729                 addrtmp[0] |= ((u32) (addr[2]) << 16);
 730                 addrtmp[0] |= ((u32) (addr[3]) << 24);
 731                 addrtmp[1] = addr[4];
 732                 addrtmp[1] |= ((u32) (addr[5]) << 8);
 733         }
 734
 735         if (dev->dev->id.revision >= 5) {
 736                 /* Receive match transmitter address mechanism */
 737                 b43_shm_write32(dev, B43_SHM_RCMTA,
 738                                 (index * 2) + 0, addrtmp[0]);
 739                 b43_shm_write16(dev, B43_SHM_RCMTA,
 740                                 (index * 2) + 1, addrtmp[1]);
 741         } else {
 742                 /* RXE (Receive Engine) and
 743                  * PSM (Programmable State Machine) mechanism
 744                  */
 745                 if (index < 8) {
 746                         /* TODO write to RCM 16, 19, 22 and 25 */
 747                 } else {
 748                         b43_shm_write32(dev, B43_SHM_SHARED,
 749                                         B43_SHM_SH_PSM + (index * 6) + 0,
 750                                         addrtmp[0]);
 751                         b43_shm_write16(dev, B43_SHM_SHARED,
 752                                         B43_SHM_SH_PSM + (index * 6) + 4,
 753                                         addrtmp[1]);
 754                 }
 755         }
 756 }
 757
 758 static void do_key_write(struct b43_wldev *dev,
 759                          u8 index, u8 algorithm,
 760                          const u8 * key, size_t key_len, const u8 * mac_addr)
 761 {
 762         u8 buf[B43_SEC_KEYSIZE] = { 0, };
 763         u8 per_sta_keys_start = 8;
 764
 765         if (b43_new_kidx_api(dev))
 766                 per_sta_keys_start = 4;
 767
 768         B43_WARN_ON(index >= dev->max_nr_keys);
 769         B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
 770
 771         if (index >= per_sta_keys_start)
 772                 keymac_write(dev, index, NULL); /* First zero out mac. */
 773         if (key)
 774                 memcpy(buf, key, key_len);
 775         key_write(dev, index, algorithm, buf);
 776         if (index >= per_sta_keys_start)
 777                 keymac_write(dev, index, mac_addr);
 778
 779         dev->key[index].algorithm = algorithm;
 780 }
 781
 782 static int b43_key_write(struct b43_wldev *dev,
 783                          int index, u8 algorithm,
 784                          const u8 * key, size_t key_len,
 785                          const u8 * mac_addr,
 786                          struct ieee80211_key_conf *keyconf)
 787 {
 788         int i;
 789         int sta_keys_start;
 790
 791         if (key_len > B43_SEC_KEYSIZE)
 792                 return -EINVAL;
 793         for (i = 0; i < dev->max_nr_keys; i++) {
 794                 /* Check that we don't already have this key. */
 795                 B43_WARN_ON(dev->key[i].keyconf == keyconf);
 796         }
 797         if (index < 0) {
 798                 /* Either pairwise key or address is 00:00:00:00:00:00
 799                  * for transmit-only keys. Search the index. */
 800                 if (b43_new_kidx_api(dev))
 801                         sta_keys_start = 4;
 802                 else
 803                         sta_keys_start = 8;
 804                 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
 805                         if (!dev->key[i].keyconf) {
 806                                 /* found empty */
 807                                 index = i;
 808                                 break;
 809                         }
 810                 }
 811                 if (index < 0) {
 812                         b43err(dev->wl, "Out of hardware key memory\n");
 813                         return -ENOSPC;
 814                 }
 815         } else
 816                 B43_WARN_ON(index > 3);
 817
 818         do_key_write(dev, index, algorithm, key, key_len, mac_addr);
 819         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 820                 /* Default RX key */
 821                 B43_WARN_ON(mac_addr);
 822                 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
 823         }
 824         keyconf->hw_key_idx = index;
 825         dev->key[index].keyconf = keyconf;
 826
 827         return 0;
 828 }
 829
 830 static int b43_key_clear(struct b43_wldev *dev, int index)
 831 {
 832         if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
 833                 return -EINVAL;
 834         do_key_write(dev, index, B43_SEC_ALGO_NONE,
 835                      NULL, B43_SEC_KEYSIZE, NULL);
 836         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 837                 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
 838                              NULL, B43_SEC_KEYSIZE, NULL);
 839         }
 840         dev->key[index].keyconf = NULL;
 841
 842         return 0;
 843 }
 844
 845 static void b43_clear_keys(struct b43_wldev *dev)
 846 {
 847         int i;
 848
 849         for (i = 0; i < dev->max_nr_keys; i++)
 850                 b43_key_clear(dev, i);
 851 }
 852
 853 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
 854 {
 855         u32 macctl;
 856         u16 ucstat;
 857         bool hwps;
 858         bool awake;
 859         int i;
 860
 861         B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
 862                     (ps_flags & B43_PS_DISABLED));
 863         B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
 864
 865         if (ps_flags & B43_PS_ENABLED) {
 866                 hwps = 1;
 867         } else if (ps_flags & B43_PS_DISABLED) {
 868                 hwps = 0;
 869         } else {
 870                 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
 871                 //      and thus is not an AP and we are associated, set bit 25
 872         }
 873         if (ps_flags & B43_PS_AWAKE) {
 874                 awake = 1;
 875         } else if (ps_flags & B43_PS_ASLEEP) {
 876                 awake = 0;
 877         } else {
 878                 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
 879                 //      or we are associated, or FIXME, or the latest PS-Poll packet sent was
 880                 //      successful, set bit26
 881         }
 882
 883 /* FIXME: For now we force awake-on and hwps-off */
 884         hwps = 0;
 885         awake = 1;
 886
 887         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 888         if (hwps)
 889                 macctl |= B43_MACCTL_HWPS;
 890         else
 891                 macctl &= ~B43_MACCTL_HWPS;
 892         if (awake)
 893                 macctl |= B43_MACCTL_AWAKE;
 894         else
 895                 macctl &= ~B43_MACCTL_AWAKE;
 896         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 897         /* Commit write */
 898         b43_read32(dev, B43_MMIO_MACCTL);
 899         if (awake && dev->dev->id.revision >= 5) {
 900                 /* Wait for the microcode to wake up. */
 901                 for (i = 0; i < 100; i++) {
 902                         ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
 903                                                 B43_SHM_SH_UCODESTAT);
 904                         if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
 905                                 break;
 906                         udelay(10);
 907                 }
 908         }
 909 }
 910
 911 /* Turn the Analog ON/OFF */
 912 static void b43_switch_analog(struct b43_wldev *dev, int on)
 913 {
 914         b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
 915 }
 916
 917 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
 918 {
 919         u32 tmslow;
 920         u32 macctl;
 921
 922         flags |= B43_TMSLOW_PHYCLKEN;
 923         flags |= B43_TMSLOW_PHYRESET;
 924         ssb_device_enable(dev->dev, flags);
 925         msleep(2);              /* Wait for the PLL to turn on. */
 926
 927         /* Now take the PHY out of Reset again */
 928         tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
 929         tmslow |= SSB_TMSLOW_FGC;
 930         tmslow &= ~B43_TMSLOW_PHYRESET;
 931         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
 932         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
 933         msleep(1);
 934         tmslow &= ~SSB_TMSLOW_FGC;
 935         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
 936         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
 937         msleep(1);
 938
 939         /* Turn Analog ON */
 940         b43_switch_analog(dev, 1);
 941
 942         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 943         macctl &= ~B43_MACCTL_GMODE;
 944         if (flags & B43_TMSLOW_GMODE)
 945                 macctl |= B43_MACCTL_GMODE;
 946         macctl |= B43_MACCTL_IHR_ENABLED;
 947         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 948 }
 949
 950 static void handle_irq_transmit_status(struct b43_wldev *dev)
 951 {
 952         u32 v0, v1;
 953         u16 tmp;
 954         struct b43_txstatus stat;
 955
 956         while (1) {
 957                 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
 958                 if (!(v0 & 0x00000001))
 959                         break;
 960                 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
 961
 962                 stat.cookie = (v0 >> 16);
 963                 stat.seq = (v1 & 0x0000FFFF);
 964                 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
 965                 tmp = (v0 & 0x0000FFFF);
 966                 stat.frame_count = ((tmp & 0xF000) >> 12);
 967                 stat.rts_count = ((tmp & 0x0F00) >> 8);
 968                 stat.supp_reason = ((tmp & 0x001C) >> 2);
 969                 stat.pm_indicated = !!(tmp & 0x0080);
 970                 stat.intermediate = !!(tmp & 0x0040);
 971                 stat.for_ampdu = !!(tmp & 0x0020);
 972                 stat.acked = !!(tmp & 0x0002);
 973
 974                 b43_handle_txstatus(dev, &stat);
 975         }
 976 }
 977
 978 static void drain_txstatus_queue(struct b43_wldev *dev)
 979 {
 980         u32 dummy;
 981
 982         if (dev->dev->id.revision < 5)
 983                 return;
 984         /* Read all entries from the microcode TXstatus FIFO
 985          * and throw them away.
 986          */
 987         while (1) {
 988                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
 989                 if (!(dummy & 0x00000001))
 990                         break;
 991                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
 992         }
 993 }
 994
 995 static u32 b43_jssi_read(struct b43_wldev *dev)
 996 {
 997         u32 val = 0;
 998
 999         val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
1000         val <<= 16;
1001         val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
1002
1003         return val;
1004 }
1005
1006 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
1007 {
1008         b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
1009         b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
1010 }
1011
1012 static void b43_generate_noise_sample(struct b43_wldev *dev)
1013 {
1014         b43_jssi_write(dev, 0x7F7F7F7F);
1015         b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1016                     b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1017                     | (1 << 4));
1018         B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1019 }
1020
1021 static void b43_calculate_link_quality(struct b43_wldev *dev)
1022 {
1023         /* Top half of Link Quality calculation. */
1024
1025         if (dev->noisecalc.calculation_running)
1026                 return;
1027         dev->noisecalc.channel_at_start = dev->phy.channel;
1028         dev->noisecalc.calculation_running = 1;
1029         dev->noisecalc.nr_samples = 0;
1030
1031         b43_generate_noise_sample(dev);
1032 }
1033
1034 static void handle_irq_noise(struct b43_wldev *dev)
1035 {
1036         struct b43_phy *phy = &dev->phy;
1037         u16 tmp;
1038         u8 noise[4];
1039         u8 i, j;
1040         s32 average;
1041
1042         /* Bottom half of Link Quality calculation. */
1043
1044         B43_WARN_ON(!dev->noisecalc.calculation_running);
1045         if (dev->noisecalc.channel_at_start != phy->channel)
1046                 goto drop_calculation;
1047         *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1048         if (noise[0] == 0x7F || noise[1] == 0x7F ||
1049             noise[2] == 0x7F || noise[3] == 0x7F)
1050                 goto generate_new;
1051
1052         /* Get the noise samples. */
1053         B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1054         i = dev->noisecalc.nr_samples;
1055         noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1056         noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1057         noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1058         noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1059         dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1060         dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1061         dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1062         dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1063         dev->noisecalc.nr_samples++;
1064         if (dev->noisecalc.nr_samples == 8) {
1065                 /* Calculate the Link Quality by the noise samples. */
1066                 average = 0;
1067                 for (i = 0; i < 8; i++) {
1068                         for (j = 0; j < 4; j++)
1069                                 average += dev->noisecalc.samples[i][j];
1070                 }
1071                 average /= (8 * 4);
1072                 average *= 125;
1073                 average += 64;
1074                 average /= 128;
1075                 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1076                 tmp = (tmp / 128) & 0x1F;
1077                 if (tmp >= 8)
1078                         average += 2;
1079                 else
1080                         average -= 25;
1081                 if (tmp == 8)
1082                         average -= 72;
1083                 else
1084                         average -= 48;
1085
1086                 dev->stats.link_noise = average;
1087               drop_calculation:
1088                 dev->noisecalc.calculation_running = 0;
1089                 return;
1090         }
1091       generate_new:
1092         b43_generate_noise_sample(dev);
1093 }
1094
1095 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1096 {
1097         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1098                 ///TODO: PS TBTT
1099         } else {
1100                 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1101                         b43_power_saving_ctl_bits(dev, 0);
1102         }
1103         dev->reg124_set_0x4 = 0;
1104         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1105                 dev->reg124_set_0x4 = 1;
1106 }
1107
1108 static void handle_irq_atim_end(struct b43_wldev *dev)
1109 {
1110         if (!dev->reg124_set_0x4 /*FIXME rename this variable */ )
1111                 return;
1112         b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1113                     b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1114                     | 0x4);
1115 }
1116
1117 static void handle_irq_pmq(struct b43_wldev *dev)
1118 {
1119         u32 tmp;
1120
1121         //TODO: AP mode.
1122
1123         while (1) {
1124                 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1125                 if (!(tmp & 0x00000008))
1126                         break;
1127         }
1128         /* 16bit write is odd, but correct. */
1129         b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1130 }
1131
1132 static void b43_write_template_common(struct b43_wldev *dev,
1133                                       const u8 * data, u16 size,
1134                                       u16 ram_offset,
1135                                       u16 shm_size_offset, u8 rate)
1136 {
1137         u32 i, tmp;
1138         struct b43_plcp_hdr4 plcp;
1139
1140         plcp.data = 0;
1141         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1142         b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1143         ram_offset += sizeof(u32);
1144         /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1145          * So leave the first two bytes of the next write blank.
1146          */
1147         tmp = (u32) (data[0]) << 16;
1148         tmp |= (u32) (data[1]) << 24;
1149         b43_ram_write(dev, ram_offset, tmp);
1150         ram_offset += sizeof(u32);
1151         for (i = 2; i < size; i += sizeof(u32)) {
1152                 tmp = (u32) (data[i + 0]);
1153                 if (i + 1 < size)
1154                         tmp |= (u32) (data[i + 1]) << 8;
1155                 if (i + 2 < size)
1156                         tmp |= (u32) (data[i + 2]) << 16;
1157                 if (i + 3 < size)
1158                         tmp |= (u32) (data[i + 3]) << 24;
1159                 b43_ram_write(dev, ram_offset + i - 2, tmp);
1160         }
1161         b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1162                         size + sizeof(struct b43_plcp_hdr6));
1163 }
1164
1165 static void b43_write_beacon_template(struct b43_wldev *dev,
1166                                       u16 ram_offset,
1167                                       u16 shm_size_offset, u8 rate)
1168 {
1169         int len;
1170         const u8 *data;
1171
1172         B43_WARN_ON(!dev->cached_beacon);
1173         len = min((size_t) dev->cached_beacon->len,
1174                   0x200 - sizeof(struct b43_plcp_hdr6));
1175         data = (const u8 *)(dev->cached_beacon->data);
1176         b43_write_template_common(dev, data,
1177                                   len, ram_offset, shm_size_offset, rate);
1178 }
1179
1180 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1181                                       u16 shm_offset, u16 size, u8 rate)
1182 {
1183         struct b43_plcp_hdr4 plcp;
1184         u32 tmp;
1185         __le16 dur;
1186
1187         plcp.data = 0;
1188         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1189         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1190                                                dev->wl->if_id, size,
1191                                                B43_RATE_TO_BASE100KBPS(rate));
1192         /* Write PLCP in two parts and timing for packet transfer */
1193         tmp = le32_to_cpu(plcp.data);
1194         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1195         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1196         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1197 }
1198
1199 /* Instead of using custom probe response template, this function
1200  * just patches custom beacon template by:
1201  * 1) Changing packet type
1202  * 2) Patching duration field
1203  * 3) Stripping TIM
1204  */
1205 static u8 *b43_generate_probe_resp(struct b43_wldev *dev,
1206                                    u16 * dest_size, u8 rate)
1207 {
1208         const u8 *src_data;
1209         u8 *dest_data;
1210         u16 src_size, elem_size, src_pos, dest_pos;
1211         __le16 dur;
1212         struct ieee80211_hdr *hdr;
1213
1214         B43_WARN_ON(!dev->cached_beacon);
1215         src_size = dev->cached_beacon->len;
1216         src_data = (const u8 *)dev->cached_beacon->data;
1217
1218         if (unlikely(src_size < 0x24)) {
1219                 b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n");
1220                 return NULL;
1221         }
1222
1223         dest_data = kmalloc(src_size, GFP_ATOMIC);
1224         if (unlikely(!dest_data))
1225                 return NULL;
1226
1227         /* 0x24 is offset of first variable-len Information-Element
1228          * in beacon frame.
1229          */
1230         memcpy(dest_data, src_data, 0x24);
1231         src_pos = dest_pos = 0x24;
1232         for (; src_pos < src_size - 2; src_pos += elem_size) {
1233                 elem_size = src_data[src_pos + 1] + 2;
1234                 if (src_data[src_pos] != 0x05) {        /* TIM */
1235                         memcpy(dest_data + dest_pos, src_data + src_pos,
1236                                elem_size);
1237                         dest_pos += elem_size;
1238                 }
1239         }
1240         *dest_size = dest_pos;
1241         hdr = (struct ieee80211_hdr *)dest_data;
1242
1243         /* Set the frame control. */
1244         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1245                                          IEEE80211_STYPE_PROBE_RESP);
1246         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1247                                                dev->wl->if_id, *dest_size,
1248                                                B43_RATE_TO_BASE100KBPS(rate));
1249         hdr->duration_id = dur;
1250
1251         return dest_data;
1252 }
1253
1254 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1255                                           u16 ram_offset,
1256                                           u16 shm_size_offset, u8 rate)
1257 {
1258         u8 *probe_resp_data;
1259         u16 size;
1260
1261         B43_WARN_ON(!dev->cached_beacon);
1262         size = dev->cached_beacon->len;
1263         probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1264         if (unlikely(!probe_resp_data))
1265                 return;
1266
1267         /* Looks like PLCP headers plus packet timings are stored for
1268          * all possible basic rates
1269          */
1270         b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB);
1271         b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB);
1272         b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB);
1273         b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB);
1274
1275         size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1276         b43_write_template_common(dev, probe_resp_data,
1277                                   size, ram_offset, shm_size_offset, rate);
1278         kfree(probe_resp_data);
1279 }
1280
1281 static int b43_refresh_cached_beacon(struct b43_wldev *dev,
1282                                      struct sk_buff *beacon)
1283 {
1284         if (dev->cached_beacon)
1285                 kfree_skb(dev->cached_beacon);
1286         dev->cached_beacon = beacon;
1287
1288         return 0;
1289 }
1290
1291 static void b43_update_templates(struct b43_wldev *dev)
1292 {
1293         u32 status;
1294
1295         B43_WARN_ON(!dev->cached_beacon);
1296
1297         b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1298         b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1299         b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB);
1300
1301         status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1302         status |= 0x03;
1303         b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1304 }
1305
1306 static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon)
1307 {
1308         int err;
1309
1310         err = b43_refresh_cached_beacon(dev, beacon);
1311         if (unlikely(err))
1312                 return;
1313         b43_update_templates(dev);
1314 }
1315
1316 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1317 {
1318         u32 tmp;
1319         u16 i, len;
1320
1321         len = min((u16) ssid_len, (u16) 0x100);
1322         for (i = 0; i < len; i += sizeof(u32)) {
1323                 tmp = (u32) (ssid[i + 0]);
1324                 if (i + 1 < len)
1325                         tmp |= (u32) (ssid[i + 1]) << 8;
1326                 if (i + 2 < len)
1327                         tmp |= (u32) (ssid[i + 2]) << 16;
1328                 if (i + 3 < len)
1329                         tmp |= (u32) (ssid[i + 3]) << 24;
1330                 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1331         }
1332         b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1333 }
1334
1335 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1336 {
1337         b43_time_lock(dev);
1338         if (dev->dev->id.revision >= 3) {
1339                 b43_write32(dev, 0x188, (beacon_int << 16));
1340         } else {
1341                 b43_write16(dev, 0x606, (beacon_int >> 6));
1342                 b43_write16(dev, 0x610, beacon_int);
1343         }
1344         b43_time_unlock(dev);
1345 }
1346
1347 static void handle_irq_beacon(struct b43_wldev *dev)
1348 {
1349         u32 status;
1350
1351         if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP))
1352                 return;
1353
1354         dev->irq_savedstate &= ~B43_IRQ_BEACON;
1355         status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1356
1357         if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) {
1358                 /* ACK beacon IRQ. */
1359                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1360                 dev->irq_savedstate |= B43_IRQ_BEACON;
1361                 if (dev->cached_beacon)
1362                         kfree_skb(dev->cached_beacon);
1363                 dev->cached_beacon = NULL;
1364                 return;
1365         }
1366         if (!(status & 0x1)) {
1367                 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1368                 status |= 0x1;
1369                 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1370         }
1371         if (!(status & 0x2)) {
1372                 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1373                 status |= 0x2;
1374                 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1375         }
1376 }
1377
1378 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1379 {
1380         //TODO
1381 }
1382
1383 /* Interrupt handler bottom-half */
1384 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1385 {
1386         u32 reason;
1387         u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1388         u32 merged_dma_reason = 0;
1389         int i;
1390         unsigned long flags;
1391
1392         spin_lock_irqsave(&dev->wl->irq_lock, flags);
1393
1394         B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1395
1396         reason = dev->irq_reason;
1397         for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1398                 dma_reason[i] = dev->dma_reason[i];
1399                 merged_dma_reason |= dma_reason[i];
1400         }
1401
1402         if (unlikely(reason & B43_IRQ_MAC_TXERR))
1403                 b43err(dev->wl, "MAC transmission error\n");
1404
1405         if (unlikely(reason & B43_IRQ_PHY_TXERR))
1406                 b43err(dev->wl, "PHY transmission error\n");
1407
1408         if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1409                                           B43_DMAIRQ_NONFATALMASK))) {
1410                 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1411                         b43err(dev->wl, "Fatal DMA error: "
1412                                "0x%08X, 0x%08X, 0x%08X, "
1413                                "0x%08X, 0x%08X, 0x%08X\n",
1414                                dma_reason[0], dma_reason[1],
1415                                dma_reason[2], dma_reason[3],
1416                                dma_reason[4], dma_reason[5]);
1417                         b43_controller_restart(dev, "DMA error");
1418                         mmiowb();
1419                         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1420                         return;
1421                 }
1422                 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1423                         b43err(dev->wl, "DMA error: "
1424                                "0x%08X, 0x%08X, 0x%08X, "
1425                                "0x%08X, 0x%08X, 0x%08X\n",
1426                                dma_reason[0], dma_reason[1],
1427                                dma_reason[2], dma_reason[3],
1428                                dma_reason[4], dma_reason[5]);
1429                 }
1430         }
1431
1432         if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1433                 handle_irq_ucode_debug(dev);
1434         if (reason & B43_IRQ_TBTT_INDI)
1435                 handle_irq_tbtt_indication(dev);
1436         if (reason & B43_IRQ_ATIM_END)
1437                 handle_irq_atim_end(dev);
1438         if (reason & B43_IRQ_BEACON)
1439                 handle_irq_beacon(dev);
1440         if (reason & B43_IRQ_PMQ)
1441                 handle_irq_pmq(dev);
1442         if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1443                 ;/* TODO */
1444         if (reason & B43_IRQ_NOISESAMPLE_OK)
1445                 handle_irq_noise(dev);
1446
1447         /* Check the DMA reason registers for received data. */
1448         if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
1449                 if (b43_using_pio(dev))
1450                         b43_pio_rx(dev->pio.queue0);
1451                 else
1452                         b43_dma_rx(dev->dma.rx_ring0);
1453         }
1454         B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1455         B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1456         if (dma_reason[3] & B43_DMAIRQ_RX_DONE) {
1457                 if (b43_using_pio(dev))
1458                         b43_pio_rx(dev->pio.queue3);
1459                 else
1460                         b43_dma_rx(dev->dma.rx_ring3);
1461         }
1462         B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1463         B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1464
1465         if (reason & B43_IRQ_TX_OK)
1466                 handle_irq_transmit_status(dev);
1467
1468         b43_interrupt_enable(dev, dev->irq_savedstate);
1469         mmiowb();
1470         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1471 }
1472
1473 static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx)
1474 {
1475         u16 rxctl;
1476
1477         rxctl = b43_read16(dev, base + B43_PIO_RXCTL);
1478         if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE)
1479                 dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE;
1480         else
1481                 dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE;
1482 }
1483
1484 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1485 {
1486         if (b43_using_pio(dev) &&
1487             (dev->dev->id.revision < 3) &&
1488             (!(reason & B43_IRQ_PIO_WORKAROUND))) {
1489                 /* Apply a PIO specific workaround to the dma_reasons */
1490                 pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0);
1491                 pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1);
1492                 pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2);
1493                 pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3);
1494         }
1495
1496         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1497
1498         b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1499         b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1500         b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1501         b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1502         b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1503         b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1504 }
1505
1506 /* Interrupt handler top-half */
1507 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1508 {
1509         irqreturn_t ret = IRQ_NONE;
1510         struct b43_wldev *dev = dev_id;
1511         u32 reason;
1512
1513         if (!dev)
1514                 return IRQ_NONE;
1515
1516         spin_lock(&dev->wl->irq_lock);
1517
1518         if (b43_status(dev) < B43_STAT_STARTED)
1519                 goto out;
1520         reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1521         if (reason == 0xffffffff)       /* shared IRQ */
1522                 goto out;
1523         ret = IRQ_HANDLED;
1524         reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1525         if (!reason)
1526                 goto out;
1527
1528         dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1529             & 0x0001DC00;
1530         dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1531             & 0x0000DC00;
1532         dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1533             & 0x0000DC00;
1534         dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1535             & 0x0001DC00;
1536         dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1537             & 0x0000DC00;
1538         dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1539             & 0x0000DC00;
1540
1541         b43_interrupt_ack(dev, reason);
1542         /* disable all IRQs. They are enabled again in the bottom half. */
1543         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1544         /* save the reason code and call our bottom half. */
1545         dev->irq_reason = reason;
1546         tasklet_schedule(&dev->isr_tasklet);
1547       out:
1548         mmiowb();
1549         spin_unlock(&dev->wl->irq_lock);
1550
1551         return ret;
1552 }
1553
1554 static void b43_release_firmware(struct b43_wldev *dev)
1555 {
1556         release_firmware(dev->fw.ucode);
1557         dev->fw.ucode = NULL;
1558         release_firmware(dev->fw.pcm);
1559         dev->fw.pcm = NULL;
1560         release_firmware(dev->fw.initvals);
1561         dev->fw.initvals = NULL;
1562         release_firmware(dev->fw.initvals_band);
1563         dev->fw.initvals_band = NULL;
1564 }
1565
1566 static void b43_print_fw_helptext(struct b43_wl *wl)
1567 {
1568         b43err(wl, "You must go to "
1569                "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1570                "and download the correct firmware (version 4).\n");
1571 }
1572
1573 static int do_request_fw(struct b43_wldev *dev,
1574                          const char *name,
1575                          const struct firmware **fw)
1576 {
1577         char path[sizeof(modparam_fwpostfix) + 32];
1578         struct b43_fw_header *hdr;
1579         u32 size;
1580         int err;
1581
1582         if (!name)
1583                 return 0;
1584
1585         snprintf(path, ARRAY_SIZE(path),
1586                  "b43%s/%s.fw",
1587                  modparam_fwpostfix, name);
1588         err = request_firmware(fw, path, dev->dev->dev);
1589         if (err) {
1590                 b43err(dev->wl, "Firmware file \"%s\" not found "
1591                        "or load failed.\n", path);
1592                 return err;
1593         }
1594         if ((*fw)->size < sizeof(struct b43_fw_header))
1595                 goto err_format;
1596         hdr = (struct b43_fw_header *)((*fw)->data);
1597         switch (hdr->type) {
1598         case B43_FW_TYPE_UCODE:
1599         case B43_FW_TYPE_PCM:
1600                 size = be32_to_cpu(hdr->size);
1601                 if (size != (*fw)->size - sizeof(struct b43_fw_header))
1602                         goto err_format;
1603                 /* fallthrough */
1604         case B43_FW_TYPE_IV:
1605                 if (hdr->ver != 1)
1606                         goto err_format;
1607                 break;
1608         default:
1609                 goto err_format;
1610         }
1611
1612         return err;
1613
1614 err_format:
1615         b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1616         return -EPROTO;
1617 }
1618
1619 static int b43_request_firmware(struct b43_wldev *dev)
1620 {
1621         struct b43_firmware *fw = &dev->fw;
1622         const u8 rev = dev->dev->id.revision;
1623         const char *filename;
1624         u32 tmshigh;
1625         int err;
1626
1627         tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1628         if (!fw->ucode) {
1629                 if ((rev >= 5) && (rev <= 10))
1630                         filename = "ucode5";
1631                 else if ((rev >= 11) && (rev <= 12))
1632                         filename = "ucode11";
1633                 else if (rev >= 13)
1634                         filename = "ucode13";
1635                 else
1636                         goto err_no_ucode;
1637                 err = do_request_fw(dev, filename, &fw->ucode);
1638                 if (err)
1639                         goto err_load;
1640         }
1641         if (!fw->pcm) {
1642                 if ((rev >= 5) && (rev <= 10))
1643                         filename = "pcm5";
1644                 else if (rev >= 11)
1645                         filename = NULL;
1646                 else
1647                         goto err_no_pcm;
1648                 err = do_request_fw(dev, filename, &fw->pcm);
1649                 if (err)
1650                         goto err_load;
1651         }
1652         if (!fw->initvals) {
1653                 switch (dev->phy.type) {
1654                 case B43_PHYTYPE_A:
1655                         if ((rev >= 5) && (rev <= 10)) {
1656                                 if (tmshigh & B43_TMSHIGH_GPHY)
1657                                         filename = "a0g1initvals5";
1658                                 else
1659                                         filename = "a0g0initvals5";
1660                         } else
1661                                 goto err_no_initvals;
1662                         break;
1663                 case B43_PHYTYPE_G:
1664                         if ((rev >= 5) && (rev <= 10))
1665                                 filename = "b0g0initvals5";
1666                         else if (rev >= 13)
1667                                 filename = "lp0initvals13";
1668                         else
1669                                 goto err_no_initvals;
1670                         break;
1671                 default:
1672                         goto err_no_initvals;
1673                 }
1674                 err = do_request_fw(dev, filename, &fw->initvals);
1675                 if (err)
1676                         goto err_load;
1677         }
1678         if (!fw->initvals_band) {
1679                 switch (dev->phy.type) {
1680                 case B43_PHYTYPE_A:
1681                         if ((rev >= 5) && (rev <= 10)) {
1682                                 if (tmshigh & B43_TMSHIGH_GPHY)
1683                                         filename = "a0g1bsinitvals5";
1684                                 else
1685                                         filename = "a0g0bsinitvals5";
1686                         } else if (rev >= 11)
1687                                 filename = NULL;
1688                         else
1689                                 goto err_no_initvals;
1690                         break;
1691                 case B43_PHYTYPE_G:
1692                         if ((rev >= 5) && (rev <= 10))
1693                                 filename = "b0g0bsinitvals5";
1694                         else if (rev >= 11)
1695                                 filename = NULL;
1696                         else
1697                                 goto err_no_initvals;
1698                         break;
1699                 default:
1700                         goto err_no_initvals;
1701                 }
1702                 err = do_request_fw(dev, filename, &fw->initvals_band);
1703                 if (err)
1704                         goto err_load;
1705         }
1706
1707         return 0;
1708
1709 err_load:
1710         b43_print_fw_helptext(dev->wl);
1711         goto error;
1712
1713 err_no_ucode:
1714         err = -ENODEV;
1715         b43err(dev->wl, "No microcode available for core rev %u\n", rev);
1716         goto error;
1717
1718 err_no_pcm:
1719         err = -ENODEV;
1720         b43err(dev->wl, "No PCM available for core rev %u\n", rev);
1721         goto error;
1722
1723 err_no_initvals:
1724         err = -ENODEV;
1725         b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
1726                "core rev %u\n", dev->phy.type, rev);
1727         goto error;
1728
1729 error:
1730         b43_release_firmware(dev);
1731         return err;
1732 }
1733
1734 static int b43_upload_microcode(struct b43_wldev *dev)
1735 {
1736         const size_t hdr_len = sizeof(struct b43_fw_header);
1737         const __be32 *data;
1738         unsigned int i, len;
1739         u16 fwrev, fwpatch, fwdate, fwtime;
1740         u32 tmp;
1741         int err = 0;
1742
1743         /* Upload Microcode. */
1744         data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1745         len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1746         b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
1747         for (i = 0; i < len; i++) {
1748                 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1749                 udelay(10);
1750         }
1751
1752         if (dev->fw.pcm) {
1753                 /* Upload PCM data. */
1754                 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1755                 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1756                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
1757                 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
1758                 /* No need for autoinc bit in SHM_HW */
1759                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
1760                 for (i = 0; i < len; i++) {
1761                         b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1762                         udelay(10);
1763                 }
1764         }
1765
1766         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
1767         b43_write32(dev, B43_MMIO_MACCTL,
1768                     B43_MACCTL_PSM_RUN |
1769                     B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA);
1770
1771         /* Wait for the microcode to load and respond */
1772         i = 0;
1773         while (1) {
1774                 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1775                 if (tmp == B43_IRQ_MAC_SUSPENDED)
1776                         break;
1777                 i++;
1778                 if (i >= 50) {
1779                         b43err(dev->wl, "Microcode not responding\n");
1780                         b43_print_fw_helptext(dev->wl);
1781                         err = -ENODEV;
1782                         goto out;
1783                 }
1784                 udelay(10);
1785         }
1786         b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);       /* dummy read */
1787
1788         /* Get and check the revisions. */
1789         fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
1790         fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
1791         fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
1792         fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
1793
1794         if (fwrev <= 0x128) {
1795                 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
1796                        "binary drivers older than version 4.x is unsupported. "
1797                        "You must upgrade your firmware files.\n");
1798                 b43_print_fw_helptext(dev->wl);
1799                 b43_write32(dev, B43_MMIO_MACCTL, 0);
1800                 err = -EOPNOTSUPP;
1801                 goto out;
1802         }
1803         b43dbg(dev->wl, "Loading firmware version %u.%u "
1804                "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
1805                fwrev, fwpatch,
1806                (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1807                (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
1808
1809         dev->fw.rev = fwrev;
1810         dev->fw.patch = fwpatch;
1811
1812       out:
1813         return err;
1814 }
1815
1816 static int b43_write_initvals(struct b43_wldev *dev,
1817                               const struct b43_iv *ivals,
1818                               size_t count,
1819                               size_t array_size)
1820 {
1821         const struct b43_iv *iv;
1822         u16 offset;
1823         size_t i;
1824         bool bit32;
1825
1826         BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
1827         iv = ivals;
1828         for (i = 0; i < count; i++) {
1829                 if (array_size < sizeof(iv->offset_size))
1830                         goto err_format;
1831                 array_size -= sizeof(iv->offset_size);
1832                 offset = be16_to_cpu(iv->offset_size);
1833                 bit32 = !!(offset & B43_IV_32BIT);
1834                 offset &= B43_IV_OFFSET_MASK;
1835                 if (offset >= 0x1000)
1836                         goto err_format;
1837                 if (bit32) {
1838                         u32 value;
1839
1840                         if (array_size < sizeof(iv->data.d32))
1841                                 goto err_format;
1842                         array_size -= sizeof(iv->data.d32);
1843
1844                         value = be32_to_cpu(get_unaligned(&iv->data.d32));
1845                         b43_write32(dev, offset, value);
1846
1847                         iv = (const struct b43_iv *)((const uint8_t *)iv +
1848                                                         sizeof(__be16) +
1849                                                         sizeof(__be32));
1850                 } else {
1851                         u16 value;
1852
1853                         if (array_size < sizeof(iv->data.d16))
1854                                 goto err_format;
1855                         array_size -= sizeof(iv->data.d16);
1856
1857                         value = be16_to_cpu(iv->data.d16);
1858                         b43_write16(dev, offset, value);
1859
1860                         iv = (const struct b43_iv *)((const uint8_t *)iv +
1861                                                         sizeof(__be16) +
1862                                                         sizeof(__be16));
1863                 }
1864         }
1865         if (array_size)
1866                 goto err_format;
1867
1868         return 0;
1869
1870 err_format:
1871         b43err(dev->wl, "Initial Values Firmware file-format error.\n");
1872         b43_print_fw_helptext(dev->wl);
1873
1874         return -EPROTO;
1875 }
1876
1877 static int b43_upload_initvals(struct b43_wldev *dev)
1878 {
1879         const size_t hdr_len = sizeof(struct b43_fw_header);
1880         const struct b43_fw_header *hdr;
1881         struct b43_firmware *fw = &dev->fw;
1882         const struct b43_iv *ivals;
1883         size_t count;
1884         int err;
1885
1886         hdr = (const struct b43_fw_header *)(fw->initvals->data);
1887         ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len);
1888         count = be32_to_cpu(hdr->size);
1889         err = b43_write_initvals(dev, ivals, count,
1890                                  fw->initvals->size - hdr_len);
1891         if (err)
1892                 goto out;
1893         if (fw->initvals_band) {
1894                 hdr = (const struct b43_fw_header *)(fw->initvals_band->data);
1895                 ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len);
1896                 count = be32_to_cpu(hdr->size);
1897                 err = b43_write_initvals(dev, ivals, count,
1898                                          fw->initvals_band->size - hdr_len);
1899                 if (err)
1900                         goto out;
1901         }
1902 out:
1903
1904         return err;
1905 }
1906
1907 /* Initialize the GPIOs
1908  * http://bcm-specs.sipsolutions.net/GPIO
1909  */
1910 static int b43_gpio_init(struct b43_wldev *dev)
1911 {
1912         struct ssb_bus *bus = dev->dev->bus;
1913         struct ssb_device *gpiodev, *pcidev = NULL;
1914         u32 mask, set;
1915
1916         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
1917                     & ~B43_MACCTL_GPOUTSMSK);
1918
1919         b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
1920                     | 0x000F);
1921
1922         mask = 0x0000001F;
1923         set = 0x0000000F;
1924         if (dev->dev->bus->chip_id == 0x4301) {
1925                 mask |= 0x0060;
1926                 set |= 0x0060;
1927         }
1928         if (0 /* FIXME: conditional unknown */ ) {
1929                 b43_write16(dev, B43_MMIO_GPIO_MASK,
1930                             b43_read16(dev, B43_MMIO_GPIO_MASK)
1931                             | 0x0100);
1932                 mask |= 0x0180;
1933                 set |= 0x0180;
1934         }
1935         if (dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_PACTRL) {
1936                 b43_write16(dev, B43_MMIO_GPIO_MASK,
1937                             b43_read16(dev, B43_MMIO_GPIO_MASK)
1938                             | 0x0200);
1939                 mask |= 0x0200;
1940                 set |= 0x0200;
1941         }
1942         if (dev->dev->id.revision >= 2)
1943                 mask |= 0x0010; /* FIXME: This is redundant. */
1944
1945 #ifdef CONFIG_SSB_DRIVER_PCICORE
1946         pcidev = bus->pcicore.dev;
1947 #endif
1948         gpiodev = bus->chipco.dev ? : pcidev;
1949         if (!gpiodev)
1950                 return 0;
1951         ssb_write32(gpiodev, B43_GPIO_CONTROL,
1952                     (ssb_read32(gpiodev, B43_GPIO_CONTROL)
1953                      & mask) | set);
1954
1955         return 0;
1956 }
1957
1958 /* Turn off all GPIO stuff. Call this on module unload, for example. */
1959 static void b43_gpio_cleanup(struct b43_wldev *dev)
1960 {
1961         struct ssb_bus *bus = dev->dev->bus;
1962         struct ssb_device *gpiodev, *pcidev = NULL;
1963
1964 #ifdef CONFIG_SSB_DRIVER_PCICORE
1965         pcidev = bus->pcicore.dev;
1966 #endif
1967         gpiodev = bus->chipco.dev ? : pcidev;
1968         if (!gpiodev)
1969                 return;
1970         ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
1971 }
1972
1973 /* http://bcm-specs.sipsolutions.net/EnableMac */
1974 void b43_mac_enable(struct b43_wldev *dev)
1975 {
1976         dev->mac_suspended--;
1977         B43_WARN_ON(dev->mac_suspended < 0);
1978         B43_WARN_ON(irqs_disabled());
1979         if (dev->mac_suspended == 0) {
1980                 b43_write32(dev, B43_MMIO_MACCTL,
1981                             b43_read32(dev, B43_MMIO_MACCTL)
1982                             | B43_MACCTL_ENABLED);
1983                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
1984                             B43_IRQ_MAC_SUSPENDED);
1985                 /* Commit writes */
1986                 b43_read32(dev, B43_MMIO_MACCTL);
1987                 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1988                 b43_power_saving_ctl_bits(dev, 0);
1989
1990                 /* Re-enable IRQs. */
1991                 spin_lock_irq(&dev->wl->irq_lock);
1992                 b43_interrupt_enable(dev, dev->irq_savedstate);
1993                 spin_unlock_irq(&dev->wl->irq_lock);
1994         }
1995 }
1996
1997 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
1998 void b43_mac_suspend(struct b43_wldev *dev)
1999 {
2000         int i;
2001         u32 tmp;
2002
2003         might_sleep();
2004         B43_WARN_ON(irqs_disabled());
2005         B43_WARN_ON(dev->mac_suspended < 0);
2006
2007         if (dev->mac_suspended == 0) {
2008                 /* Mask IRQs before suspending MAC. Otherwise
2009                  * the MAC stays busy and won't suspend. */
2010                 spin_lock_irq(&dev->wl->irq_lock);
2011                 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
2012                 spin_unlock_irq(&dev->wl->irq_lock);
2013                 b43_synchronize_irq(dev);
2014                 dev->irq_savedstate = tmp;
2015
2016                 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
2017                 b43_write32(dev, B43_MMIO_MACCTL,
2018                             b43_read32(dev, B43_MMIO_MACCTL)
2019                             & ~B43_MACCTL_ENABLED);
2020                 /* force pci to flush the write */
2021                 b43_read32(dev, B43_MMIO_MACCTL);
2022                 for (i = 40; i; i--) {
2023                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2024                         if (tmp & B43_IRQ_MAC_SUSPENDED)
2025                                 goto out;
2026                         msleep(1);
2027                 }
2028                 b43err(dev->wl, "MAC suspend failed\n");
2029         }
2030 out:
2031         dev->mac_suspended++;
2032 }
2033
2034 static void b43_adjust_opmode(struct b43_wldev *dev)
2035 {
2036         struct b43_wl *wl = dev->wl;
2037         u32 ctl;
2038         u16 cfp_pretbtt;
2039
2040         ctl = b43_read32(dev, B43_MMIO_MACCTL);
2041         /* Reset status to STA infrastructure mode. */
2042         ctl &= ~B43_MACCTL_AP;
2043         ctl &= ~B43_MACCTL_KEEP_CTL;
2044         ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2045         ctl &= ~B43_MACCTL_KEEP_BAD;
2046         ctl &= ~B43_MACCTL_PROMISC;
2047         ctl &= ~B43_MACCTL_BEACPROMISC;
2048         ctl |= B43_MACCTL_INFRA;
2049
2050         if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2051                 ctl |= B43_MACCTL_AP;
2052         else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2053                 ctl &= ~B43_MACCTL_INFRA;
2054
2055         if (wl->filter_flags & FIF_CONTROL)
2056                 ctl |= B43_MACCTL_KEEP_CTL;
2057         if (wl->filter_flags & FIF_FCSFAIL)
2058                 ctl |= B43_MACCTL_KEEP_BAD;
2059         if (wl->filter_flags & FIF_PLCPFAIL)
2060                 ctl |= B43_MACCTL_KEEP_BADPLCP;
2061         if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2062                 ctl |= B43_MACCTL_PROMISC;
2063         if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2064                 ctl |= B43_MACCTL_BEACPROMISC;
2065
2066         /* Workaround: On old hardware the HW-MAC-address-filter
2067          * doesn't work properly, so always run promisc in filter
2068          * it in software. */
2069         if (dev->dev->id.revision <= 4)
2070                 ctl |= B43_MACCTL_PROMISC;
2071
2072         b43_write32(dev, B43_MMIO_MACCTL, ctl);
2073
2074         cfp_pretbtt = 2;
2075         if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2076                 if (dev->dev->bus->chip_id == 0x4306 &&
2077                     dev->dev->bus->chip_rev == 3)
2078                         cfp_pretbtt = 100;
2079                 else
2080                         cfp_pretbtt = 50;
2081         }
2082         b43_write16(dev, 0x612, cfp_pretbtt);
2083 }
2084
2085 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2086 {
2087         u16 offset;
2088
2089         if (is_ofdm) {
2090                 offset = 0x480;
2091                 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2092         } else {
2093                 offset = 0x4C0;
2094                 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2095         }
2096         b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2097                         b43_shm_read16(dev, B43_SHM_SHARED, offset));
2098 }
2099
2100 static void b43_rate_memory_init(struct b43_wldev *dev)
2101 {
2102         switch (dev->phy.type) {
2103         case B43_PHYTYPE_A:
2104         case B43_PHYTYPE_G:
2105                 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2106                 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2107                 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2108                 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2109                 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2110                 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2111                 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2112                 if (dev->phy.type == B43_PHYTYPE_A)
2113                         break;
2114                 /* fallthrough */
2115         case B43_PHYTYPE_B:
2116                 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2117                 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2118                 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2119                 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2120                 break;
2121         default:
2122                 B43_WARN_ON(1);
2123         }
2124 }
2125
2126 /* Set the TX-Antenna for management frames sent by firmware. */
2127 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2128 {
2129         u16 ant = 0;
2130         u16 tmp;
2131
2132         switch (antenna) {
2133         case B43_ANTENNA0:
2134                 ant |= B43_TX4_PHY_ANT0;
2135                 break;
2136         case B43_ANTENNA1:
2137                 ant |= B43_TX4_PHY_ANT1;
2138                 break;
2139         case B43_ANTENNA_AUTO:
2140                 ant |= B43_TX4_PHY_ANTLAST;
2141                 break;
2142         default:
2143                 B43_WARN_ON(1);
2144         }
2145
2146         /* FIXME We also need to set the other flags of the PHY control field somewhere. */
2147
2148         /* For Beacons */
2149         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
2150         tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2151         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
2152         /* For ACK/CTS */
2153         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2154         tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2155         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2156         /* For Probe Resposes */
2157         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2158         tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2159         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2160 }
2161
2162 /* This is the opposite of b43_chip_init() */
2163 static void b43_chip_exit(struct b43_wldev *dev)
2164 {
2165         b43_radio_turn_off(dev, 1);
2166         b43_leds_exit(dev);
2167         b43_gpio_cleanup(dev);
2168         /* firmware is released later */
2169 }
2170
2171 /* Initialize the chip
2172  * http://bcm-specs.sipsolutions.net/ChipInit
2173  */
2174 static int b43_chip_init(struct b43_wldev *dev)
2175 {
2176         struct b43_phy *phy = &dev->phy;
2177         int err, tmp;
2178         u32 value32;
2179         u16 value16;
2180
2181         b43_write32(dev, B43_MMIO_MACCTL,
2182                     B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED);
2183
2184         err = b43_request_firmware(dev);
2185         if (err)
2186                 goto out;
2187         err = b43_upload_microcode(dev);
2188         if (err)
2189                 goto out;       /* firmware is released later */
2190
2191         err = b43_gpio_init(dev);
2192         if (err)
2193                 goto out;       /* firmware is released later */
2194         b43_leds_init(dev);
2195
2196         err = b43_upload_initvals(dev);
2197         if (err)
2198                 goto err_leds_exit;
2199         b43_radio_turn_on(dev);
2200
2201         b43_write16(dev, 0x03E6, 0x0000);
2202         err = b43_phy_init(dev);
2203         if (err)
2204                 goto err_radio_off;
2205
2206         /* Select initial Interference Mitigation. */
2207         tmp = phy->interfmode;
2208         phy->interfmode = B43_INTERFMODE_NONE;
2209         b43_radio_set_interference_mitigation(dev, tmp);
2210
2211         b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2212         b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2213
2214         if (phy->type == B43_PHYTYPE_B) {
2215                 value16 = b43_read16(dev, 0x005E);
2216                 value16 |= 0x0004;
2217                 b43_write16(dev, 0x005E, value16);
2218         }
2219         b43_write32(dev, 0x0100, 0x01000000);
2220         if (dev->dev->id.revision < 5)
2221                 b43_write32(dev, 0x010C, 0x01000000);
2222
2223         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2224                     & ~B43_MACCTL_INFRA);
2225         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2226                     | B43_MACCTL_INFRA);
2227
2228         if (b43_using_pio(dev)) {
2229                 b43_write32(dev, 0x0210, 0x00000100);
2230                 b43_write32(dev, 0x0230, 0x00000100);
2231                 b43_write32(dev, 0x0250, 0x00000100);
2232                 b43_write32(dev, 0x0270, 0x00000100);
2233                 b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000);
2234         }
2235
2236         /* Probe Response Timeout value */
2237         /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2238         b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2239
2240         /* Initially set the wireless operation mode. */
2241         b43_adjust_opmode(dev);
2242
2243         if (dev->dev->id.revision < 3) {
2244                 b43_write16(dev, 0x060E, 0x0000);
2245                 b43_write16(dev, 0x0610, 0x8000);
2246                 b43_write16(dev, 0x0604, 0x0000);
2247                 b43_write16(dev, 0x0606, 0x0200);
2248         } else {
2249                 b43_write32(dev, 0x0188, 0x80000000);
2250                 b43_write32(dev, 0x018C, 0x02000000);
2251         }
2252         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2253         b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2254         b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2255         b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2256         b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2257         b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2258         b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2259
2260         value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2261         value32 |= 0x00100000;
2262         ssb_write32(dev->dev, SSB_TMSLOW, value32);
2263
2264         b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2265                     dev->dev->bus->chipco.fast_pwrup_delay);
2266
2267         err = 0;
2268         b43dbg(dev->wl, "Chip initialized\n");
2269 out:
2270         return err;
2271
2272 err_radio_off:
2273         b43_radio_turn_off(dev, 1);
2274 err_leds_exit:
2275         b43_leds_exit(dev);
2276         b43_gpio_cleanup(dev);
2277         return err;
2278 }
2279
2280 static void b43_periodic_every120sec(struct b43_wldev *dev)
2281 {
2282         struct b43_phy *phy = &dev->phy;
2283
2284         if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2285                 return;
2286
2287         b43_mac_suspend(dev);
2288         b43_lo_g_measure(dev);
2289         b43_mac_enable(dev);
2290         if (b43_has_hardware_pctl(phy))
2291                 b43_lo_g_ctl_mark_all_unused(dev);
2292 }
2293
2294 static void b43_periodic_every60sec(struct b43_wldev *dev)
2295 {
2296         struct b43_phy *phy = &dev->phy;
2297
2298         if (!b43_has_hardware_pctl(phy))
2299                 b43_lo_g_ctl_mark_all_unused(dev);
2300         if (dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_RSSI) {
2301                 b43_mac_suspend(dev);
2302                 b43_calc_nrssi_slope(dev);
2303                 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2304                         u8 old_chan = phy->channel;
2305
2306                         /* VCO Calibration */
2307                         if (old_chan >= 8)
2308                                 b43_radio_selectchannel(dev, 1, 0);
2309                         else
2310                                 b43_radio_selectchannel(dev, 13, 0);
2311                         b43_radio_selectchannel(dev, old_chan, 0);
2312                 }
2313                 b43_mac_enable(dev);
2314         }
2315 }
2316
2317 static void b43_periodic_every30sec(struct b43_wldev *dev)
2318 {
2319         /* Update device statistics. */
2320         b43_calculate_link_quality(dev);
2321 }
2322
2323 static void b43_periodic_every15sec(struct b43_wldev *dev)
2324 {
2325         struct b43_phy *phy = &dev->phy;
2326
2327         if (phy->type == B43_PHYTYPE_G) {
2328                 //TODO: update_aci_moving_average
2329                 if (phy->aci_enable && phy->aci_wlan_automatic) {
2330                         b43_mac_suspend(dev);
2331                         if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2332                                 if (0 /*TODO: bunch of conditions */ ) {
2333                                         b43_radio_set_interference_mitigation
2334                                             (dev, B43_INTERFMODE_MANUALWLAN);
2335                                 }
2336                         } else if (1 /*TODO*/) {
2337                                 /*
2338                                    if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2339                                    b43_radio_set_interference_mitigation(dev,
2340                                    B43_INTERFMODE_NONE);
2341                                    }
2342                                  */
2343                         }
2344                         b43_mac_enable(dev);
2345                 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2346                            phy->rev == 1) {
2347                         //TODO: implement rev1 workaround
2348                 }
2349         }
2350         b43_phy_xmitpower(dev); //FIXME: unless scanning?
2351         //TODO for APHY (temperature?)
2352 }
2353
2354 static void do_periodic_work(struct b43_wldev *dev)
2355 {
2356         unsigned int state;
2357
2358         state = dev->periodic_state;
2359         if (state % 8 == 0)
2360                 b43_periodic_every120sec(dev);
2361         if (state % 4 == 0)
2362                 b43_periodic_every60sec(dev);
2363         if (state % 2 == 0)
2364                 b43_periodic_every30sec(dev);
2365         b43_periodic_every15sec(dev);
2366 }
2367
2368 /* Periodic work locking policy:
2369  *      The whole periodic work handler is protected by
2370  *      wl->mutex. If another lock is needed somewhere in the
2371  *      pwork callchain, it's aquired in-place, where it's needed.
2372  */
2373 static void b43_periodic_work_handler(struct work_struct *work)
2374 {
2375         struct b43_wldev *dev = container_of(work, struct b43_wldev,
2376                                              periodic_work.work);
2377         struct b43_wl *wl = dev->wl;
2378         unsigned long delay;
2379
2380         mutex_lock(&wl->mutex);
2381
2382         if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2383                 goto out;
2384         if (b43_debug(dev, B43_DBG_PWORK_STOP))
2385                 goto out_requeue;
2386
2387         do_periodic_work(dev);
2388
2389         dev->periodic_state++;
2390 out_requeue:
2391         if (b43_debug(dev, B43_DBG_PWORK_FAST))
2392                 delay = msecs_to_jiffies(50);
2393         else
2394                 delay = round_jiffies_relative(HZ * 15);
2395         queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2396 out:
2397         mutex_unlock(&wl->mutex);
2398 }
2399
2400 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2401 {
2402         struct delayed_work *work = &dev->periodic_work;
2403
2404         dev->periodic_state = 0;
2405         INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2406         queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2407 }
2408
2409 /* Validate access to the chip (SHM) */
2410 static int b43_validate_chipaccess(struct b43_wldev *dev)
2411 {
2412         u32 value;
2413         u32 shm_backup;
2414
2415         shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2416         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2417         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2418                 goto error;
2419         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2420         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2421                 goto error;
2422         b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup);
2423
2424         value = b43_read32(dev, B43_MMIO_MACCTL);
2425         if ((value | B43_MACCTL_GMODE) !=
2426             (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2427                 goto error;
2428
2429         value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
2430         if (value)
2431                 goto error;
2432
2433         return 0;
2434       error:
2435         b43err(dev->wl, "Failed to validate the chipaccess\n");
2436         return -ENODEV;
2437 }
2438
2439 static void b43_security_init(struct b43_wldev *dev)
2440 {
2441         dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2442         B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2443         dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2444         /* KTP is a word address, but we address SHM bytewise.
2445          * So multiply by two.
2446          */
2447         dev->ktp *= 2;
2448         if (dev->dev->id.revision >= 5) {
2449                 /* Number of RCMTA address slots */
2450                 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2451         }
2452         b43_clear_keys(dev);
2453 }
2454
2455 static int b43_rng_read(struct hwrng *rng, u32 * data)
2456 {
2457         struct b43_wl *wl = (struct b43_wl *)rng->priv;
2458         unsigned long flags;
2459
2460         /* Don't take wl->mutex here, as it could deadlock with
2461          * hwrng internal locking. It's not needed to take
2462          * wl->mutex here, anyway. */
2463
2464         spin_lock_irqsave(&wl->irq_lock, flags);
2465         *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2466         spin_unlock_irqrestore(&wl->irq_lock, flags);
2467
2468         return (sizeof(u16));
2469 }
2470
2471 static void b43_rng_exit(struct b43_wl *wl)
2472 {
2473         if (wl->rng_initialized)
2474                 hwrng_unregister(&wl->rng);
2475 }
2476
2477 static int b43_rng_init(struct b43_wl *wl)
2478 {
2479         int err;
2480
2481         snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2482                  "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2483         wl->rng.name = wl->rng_name;
2484         wl->rng.data_read = b43_rng_read;
2485         wl->rng.priv = (unsigned long)wl;
2486         wl->rng_initialized = 1;
2487         err = hwrng_register(&wl->rng);
2488         if (err) {
2489                 wl->rng_initialized = 0;
2490                 b43err(wl, "Failed to register the random "
2491                        "number generator (%d)\n", err);
2492         }
2493
2494         return err;
2495 }
2496
2497 static int b43_tx(struct ieee80211_hw *hw,
2498                   struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2499 {
2500         struct b43_wl *wl = hw_to_b43_wl(hw);
2501         struct b43_wldev *dev = wl->current_dev;
2502         int err = -ENODEV;
2503         unsigned long flags;
2504
2505         if (unlikely(!dev))
2506                 goto out;
2507         if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2508                 goto out;
2509         /* DMA-TX is done without a global lock. */
2510         if (b43_using_pio(dev)) {
2511                 spin_lock_irqsave(&wl->irq_lock, flags);
2512                 err = b43_pio_tx(dev, skb, ctl);
2513                 spin_unlock_irqrestore(&wl->irq_lock, flags);
2514         } else
2515                 err = b43_dma_tx(dev, skb, ctl);
2516       out:
2517         if (unlikely(err))
2518                 return NETDEV_TX_BUSY;
2519         return NETDEV_TX_OK;
2520 }
2521
2522 static int b43_conf_tx(struct ieee80211_hw *hw,
2523                        int queue,
2524                        const struct ieee80211_tx_queue_params *params)
2525 {
2526         return 0;
2527 }
2528
2529 static int b43_get_tx_stats(struct ieee80211_hw *hw,
2530                             struct ieee80211_tx_queue_stats *stats)
2531 {
2532         struct b43_wl *wl = hw_to_b43_wl(hw);
2533         struct b43_wldev *dev = wl->current_dev;
2534         unsigned long flags;
2535         int err = -ENODEV;
2536
2537         if (!dev)
2538                 goto out;
2539         spin_lock_irqsave(&wl->irq_lock, flags);
2540         if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2541                 if (b43_using_pio(dev))
2542                         b43_pio_get_tx_stats(dev, stats);
2543                 else
2544                         b43_dma_get_tx_stats(dev, stats);
2545                 err = 0;
2546         }
2547         spin_unlock_irqrestore(&wl->irq_lock, flags);
2548       out:
2549         return err;
2550 }
2551
2552 static int b43_get_stats(struct ieee80211_hw *hw,
2553                          struct ieee80211_low_level_stats *stats)
2554 {
2555         struct b43_wl *wl = hw_to_b43_wl(hw);
2556         unsigned long flags;
2557
2558         spin_lock_irqsave(&wl->irq_lock, flags);
2559         memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2560         spin_unlock_irqrestore(&wl->irq_lock, flags);
2561
2562         return 0;
2563 }
2564
2565 static const char *phymode_to_string(unsigned int phymode)
2566 {
2567         switch (phymode) {
2568         case B43_PHYMODE_A:
2569                 return "A";
2570         case B43_PHYMODE_B:
2571                 return "B";
2572         case B43_PHYMODE_G:
2573                 return "G";
2574         default:
2575                 B43_WARN_ON(1);
2576         }
2577         return "";
2578 }
2579
2580 static int find_wldev_for_phymode(struct b43_wl *wl,
2581                                   unsigned int phymode,
2582                                   struct b43_wldev **dev, bool * gmode)
2583 {
2584         struct b43_wldev *d;
2585
2586         list_for_each_entry(d, &wl->devlist, list) {
2587                 if (d->phy.possible_phymodes & phymode) {
2588                         /* Ok, this device supports the PHY-mode.
2589                          * Now figure out how the gmode bit has to be
2590                          * set to support it. */
2591                         if (phymode == B43_PHYMODE_A)
2592                                 *gmode = 0;
2593                         else
2594                                 *gmode = 1;
2595                         *dev = d;
2596
2597                         return 0;
2598                 }
2599         }
2600
2601         return -ESRCH;
2602 }
2603
2604 static void b43_put_phy_into_reset(struct b43_wldev *dev)
2605 {
2606         struct ssb_device *sdev = dev->dev;
2607         u32 tmslow;
2608
2609         tmslow = ssb_read32(sdev, SSB_TMSLOW);
2610         tmslow &= ~B43_TMSLOW_GMODE;
2611         tmslow |= B43_TMSLOW_PHYRESET;
2612         tmslow |= SSB_TMSLOW_FGC;
2613         ssb_write32(sdev, SSB_TMSLOW, tmslow);
2614         msleep(1);
2615
2616         tmslow = ssb_read32(sdev, SSB_TMSLOW);
2617         tmslow &= ~SSB_TMSLOW_FGC;
2618         tmslow |= B43_TMSLOW_PHYRESET;
2619         ssb_write32(sdev, SSB_TMSLOW, tmslow);
2620         msleep(1);
2621 }
2622
2623 /* Expects wl->mutex locked */
2624 static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode)
2625 {
2626         struct b43_wldev *up_dev;
2627         struct b43_wldev *down_dev;
2628         int err;
2629         bool gmode = 0;
2630         int prev_status;
2631
2632         err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2633         if (err) {
2634                 b43err(wl, "Could not find a device for %s-PHY mode\n",
2635                        phymode_to_string(new_mode));
2636                 return err;
2637         }
2638         if ((up_dev == wl->current_dev) &&
2639             (!!wl->current_dev->phy.gmode == !!gmode)) {
2640                 /* This device is already running. */
2641                 return 0;
2642         }
2643         b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2644                phymode_to_string(new_mode));
2645         down_dev = wl->current_dev;
2646
2647         prev_status = b43_status(down_dev);
2648         /* Shutdown the currently running core. */
2649         if (prev_status >= B43_STAT_STARTED)
2650                 b43_wireless_core_stop(down_dev);
2651         if (prev_status >= B43_STAT_INITIALIZED)
2652                 b43_wireless_core_exit(down_dev);
2653
2654         if (down_dev != up_dev) {
2655                 /* We switch to a different core, so we put PHY into
2656                  * RESET on the old core. */
2657                 b43_put_phy_into_reset(down_dev);
2658         }
2659
2660         /* Now start the new core. */
2661         up_dev->phy.gmode = gmode;
2662         if (prev_status >= B43_STAT_INITIALIZED) {
2663                 err = b43_wireless_core_init(up_dev);
2664                 if (err) {
2665                         b43err(wl, "Fatal: Could not initialize device for "
2666                                "newly selected %s-PHY mode\n",
2667                                phymode_to_string(new_mode));
2668                         goto init_failure;
2669                 }
2670         }
2671         if (prev_status >= B43_STAT_STARTED) {
2672                 err = b43_wireless_core_start(up_dev);
2673                 if (err) {
2674                         b43err(wl, "Fatal: Coult not start device for "
2675                                "newly selected %s-PHY mode\n",
2676                                phymode_to_string(new_mode));
2677                         b43_wireless_core_exit(up_dev);
2678                         goto init_failure;
2679                 }
2680         }
2681         B43_WARN_ON(b43_status(up_dev) != prev_status);
2682
2683         wl->current_dev = up_dev;
2684
2685         return 0;
2686       init_failure:
2687         /* Whoops, failed to init the new core. No core is operating now. */
2688         wl->current_dev = NULL;
2689         return err;
2690 }
2691
2692 static int b43_antenna_from_ieee80211(u8 antenna)
2693 {
2694         switch (antenna) {
2695         case 0:         /* default/diversity */
2696                 return B43_ANTENNA_DEFAULT;
2697         case 1:         /* Antenna 0 */
2698                 return B43_ANTENNA0;
2699         case 2:         /* Antenna 1 */
2700                 return B43_ANTENNA1;
2701         default:
2702                 return B43_ANTENNA_DEFAULT;
2703         }
2704 }
2705
2706 static int b43_dev_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2707 {
2708         struct b43_wl *wl = hw_to_b43_wl(hw);
2709         struct b43_wldev *dev;
2710         struct b43_phy *phy;
2711         unsigned long flags;
2712         unsigned int new_phymode = 0xFFFF;
2713         int antenna_tx;
2714         int antenna_rx;
2715         int err = 0;
2716         u32 savedirqs;
2717
2718         antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx);
2719         antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx);
2720
2721         mutex_lock(&wl->mutex);
2722
2723         /* Switch the PHY mode (if necessary). */
2724         switch (conf->phymode) {
2725         case MODE_IEEE80211A:
2726                 new_phymode = B43_PHYMODE_A;
2727                 break;
2728         case MODE_IEEE80211B:
2729                 new_phymode = B43_PHYMODE_B;
2730                 break;
2731         case MODE_IEEE80211G:
2732                 new_phymode = B43_PHYMODE_G;
2733                 break;
2734         default:
2735                 B43_WARN_ON(1);
2736         }
2737         err = b43_switch_phymode(wl, new_phymode);
2738         if (err)
2739                 goto out_unlock_mutex;
2740         dev = wl->current_dev;
2741         phy = &dev->phy;
2742
2743         /* Disable IRQs while reconfiguring the device.
2744          * This makes it possible to drop the spinlock throughout
2745          * the reconfiguration process. */
2746         spin_lock_irqsave(&wl->irq_lock, flags);
2747         if (b43_status(dev) < B43_STAT_STARTED) {
2748                 spin_unlock_irqrestore(&wl->irq_lock, flags);
2749                 goto out_unlock_mutex;
2750         }
2751         savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
2752         spin_unlock_irqrestore(&wl->irq_lock, flags);
2753         b43_synchronize_irq(dev);
2754
2755         /* Switch to the requested channel.
2756          * The firmware takes care of races with the TX handler. */
2757         if (conf->channel_val != phy->channel)
2758                 b43_radio_selectchannel(dev, conf->channel_val, 0);
2759
2760         /* Enable/Disable ShortSlot timing. */
2761         if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
2762             dev->short_slot) {
2763                 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
2764                 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
2765                         b43_short_slot_timing_enable(dev);
2766                 else
2767                         b43_short_slot_timing_disable(dev);
2768         }
2769
2770         /* Adjust the desired TX power level. */
2771         if (conf->power_level != 0) {
2772                 if (conf->power_level != phy->power_level) {
2773                         phy->power_level = conf->power_level;
2774                         b43_phy_xmitpower(dev);
2775                 }
2776         }
2777
2778         /* Antennas for RX and management frame TX. */
2779         b43_mgmtframe_txantenna(dev, antenna_tx);
2780         b43_set_rx_antenna(dev, antenna_rx);
2781
2782         /* Update templates for AP mode. */
2783         if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2784                 b43_set_beacon_int(dev, conf->beacon_int);
2785
2786         if (!!conf->radio_enabled != phy->radio_on) {
2787                 if (conf->radio_enabled) {
2788                         b43_radio_turn_on(dev);
2789                         b43info(dev->wl, "Radio turned on by software\n");
2790                         if (!dev->radio_hw_enable) {
2791                                 b43info(dev->wl, "The hardware RF-kill button "
2792                                         "still turns the radio physically off. "
2793                                         "Press the button to turn it on.\n");
2794                         }
2795                 } else {
2796                         b43_radio_turn_off(dev, 0);
2797                         b43info(dev->wl, "Radio turned off by software\n");
2798                 }
2799         }
2800
2801         spin_lock_irqsave(&wl->irq_lock, flags);
2802         b43_interrupt_enable(dev, savedirqs);
2803         mmiowb();
2804         spin_unlock_irqrestore(&wl->irq_lock, flags);
2805       out_unlock_mutex:
2806         mutex_unlock(&wl->mutex);
2807
2808         return err;
2809 }
2810
2811 static int b43_dev_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2812                            const u8 *local_addr, const u8 *addr,
2813                            struct ieee80211_key_conf *key)
2814 {
2815         struct b43_wl *wl = hw_to_b43_wl(hw);
2816         struct b43_wldev *dev = wl->current_dev;
2817         unsigned long flags;
2818         u8 algorithm;
2819         u8 index;
2820         int err = -EINVAL;
2821         DECLARE_MAC_BUF(mac);
2822
2823         if (modparam_nohwcrypt)
2824                 return -ENOSPC; /* User disabled HW-crypto */
2825
2826         if (!dev)
2827                 return -ENODEV;
2828         switch (key->alg) {
2829         case ALG_WEP:
2830                 if (key->keylen == 5)
2831                         algorithm = B43_SEC_ALGO_WEP40;
2832                 else
2833                         algorithm = B43_SEC_ALGO_WEP104;
2834                 break;
2835         case ALG_TKIP:
2836                 algorithm = B43_SEC_ALGO_TKIP;
2837                 break;
2838         case ALG_CCMP:
2839                 algorithm = B43_SEC_ALGO_AES;
2840                 break;
2841         default:
2842                 B43_WARN_ON(1);
2843                 goto out;
2844         }
2845
2846         index = (u8) (key->keyidx);
2847         if (index > 3)
2848                 goto out;
2849
2850         mutex_lock(&wl->mutex);
2851         spin_lock_irqsave(&wl->irq_lock, flags);
2852
2853         if (b43_status(dev) < B43_STAT_INITIALIZED) {
2854                 err = -ENODEV;
2855                 goto out_unlock;
2856         }
2857
2858         switch (cmd) {
2859         case SET_KEY:
2860                 if (algorithm == B43_SEC_ALGO_TKIP) {
2861                         /* FIXME: No TKIP hardware encryption for now. */
2862                         err = -EOPNOTSUPP;
2863                         goto out_unlock;
2864                 }
2865
2866                 if (is_broadcast_ether_addr(addr)) {
2867                         /* addr is FF:FF:FF:FF:FF:FF for default keys */
2868                         err = b43_key_write(dev, index, algorithm,
2869                                             key->key, key->keylen, NULL, key);
2870                 } else {
2871                         /*
2872                          * either pairwise key or address is 00:00:00:00:00:00
2873                          * for transmit-only keys
2874                          */
2875                         err = b43_key_write(dev, -1, algorithm,
2876                                             key->key, key->keylen, addr, key);
2877                 }
2878                 if (err)
2879                         goto out_unlock;
2880
2881                 if (algorithm == B43_SEC_ALGO_WEP40 ||
2882                     algorithm == B43_SEC_ALGO_WEP104) {
2883                         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
2884                 } else {
2885                         b43_hf_write(dev,
2886                                      b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
2887                 }
2888                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2889                 break;
2890         case DISABLE_KEY: {
2891                 err = b43_key_clear(dev, key->hw_key_idx);
2892                 if (err)
2893                         goto out_unlock;
2894                 break;
2895         }
2896         default:
2897                 B43_WARN_ON(1);
2898         }
2899 out_unlock:
2900         spin_unlock_irqrestore(&wl->irq_lock, flags);
2901         mutex_unlock(&wl->mutex);
2902 out:
2903         if (!err) {
2904                 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
2905                        "mac: %s\n",
2906                        cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
2907                        print_mac(mac, addr));
2908         }
2909         return err;
2910 }
2911
2912 static void b43_configure_filter(struct ieee80211_hw *hw,
2913                                  unsigned int changed, unsigned int *fflags,
2914                                  int mc_count, struct dev_addr_list *mc_list)
2915 {
2916         struct b43_wl *wl = hw_to_b43_wl(hw);
2917         struct b43_wldev *dev = wl->current_dev;
2918         unsigned long flags;
2919
2920         if (!dev) {
2921                 *fflags = 0;
2922                 return;
2923         }
2924
2925         spin_lock_irqsave(&wl->irq_lock, flags);
2926         *fflags &= FIF_PROMISC_IN_BSS |
2927                   FIF_ALLMULTI |
2928                   FIF_FCSFAIL |
2929                   FIF_PLCPFAIL |
2930                   FIF_CONTROL |
2931                   FIF_OTHER_BSS |
2932                   FIF_BCN_PRBRESP_PROMISC;
2933
2934         changed &= FIF_PROMISC_IN_BSS |
2935                    FIF_ALLMULTI |
2936                    FIF_FCSFAIL |
2937                    FIF_PLCPFAIL |
2938                    FIF_CONTROL |
2939                    FIF_OTHER_BSS |
2940                    FIF_BCN_PRBRESP_PROMISC;
2941
2942         wl->filter_flags = *fflags;
2943
2944         if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
2945                 b43_adjust_opmode(dev);
2946         spin_unlock_irqrestore(&wl->irq_lock, flags);
2947 }
2948
2949 static int b43_config_interface(struct ieee80211_hw *hw,
2950                                 int if_id, struct ieee80211_if_conf *conf)
2951 {
2952         struct b43_wl *wl = hw_to_b43_wl(hw);
2953         struct b43_wldev *dev = wl->current_dev;
2954         unsigned long flags;
2955
2956         if (!dev)
2957                 return -ENODEV;
2958         mutex_lock(&wl->mutex);
2959         spin_lock_irqsave(&wl->irq_lock, flags);
2960         B43_WARN_ON(wl->if_id != if_id);
2961         if (conf->bssid)
2962                 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2963         else
2964                 memset(wl->bssid, 0, ETH_ALEN);
2965         if (b43_status(dev) >= B43_STAT_INITIALIZED) {
2966                 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
2967                         B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
2968                         b43_set_ssid(dev, conf->ssid, conf->ssid_len);
2969                         if (conf->beacon)
2970                                 b43_refresh_templates(dev, conf->beacon);
2971                 }
2972                 b43_write_mac_bssid_templates(dev);
2973         }
2974         spin_unlock_irqrestore(&wl->irq_lock, flags);
2975         mutex_unlock(&wl->mutex);
2976
2977         return 0;
2978 }
2979
2980 /* Locking: wl->mutex */
2981 static void b43_wireless_core_stop(struct b43_wldev *dev)
2982 {
2983         struct b43_wl *wl = dev->wl;
2984         unsigned long flags;
2985
2986         if (b43_status(dev) < B43_STAT_STARTED)
2987                 return;
2988
2989         /* Disable and sync interrupts. We must do this before than
2990          * setting the status to INITIALIZED, as the interrupt handler
2991          * won't care about IRQs then. */
2992         spin_lock_irqsave(&wl->irq_lock, flags);
2993         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
2994         b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
2995         spin_unlock_irqrestore(&wl->irq_lock, flags);
2996         b43_synchronize_irq(dev);
2997
2998         b43_set_status(dev, B43_STAT_INITIALIZED);
2999
3000         mutex_unlock(&wl->mutex);
3001         /* Must unlock as it would otherwise deadlock. No races here.
3002          * Cancel the possibly running self-rearming periodic work. */
3003         cancel_delayed_work_sync(&dev->periodic_work);
3004         mutex_lock(&wl->mutex);
3005
3006         ieee80211_stop_queues(wl->hw);  //FIXME this could cause a deadlock, as mac80211 seems buggy.
3007
3008         b43_mac_suspend(dev);
3009         free_irq(dev->dev->irq, dev);
3010         b43dbg(wl, "Wireless interface stopped\n");
3011 }
3012
3013 /* Locking: wl->mutex */
3014 static int b43_wireless_core_start(struct b43_wldev *dev)
3015 {
3016         int err;
3017
3018         B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3019
3020         drain_txstatus_queue(dev);
3021         err = request_irq(dev->dev->irq, b43_interrupt_handler,
3022                           IRQF_SHARED, KBUILD_MODNAME, dev);
3023         if (err) {
3024                 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3025                 goto out;
3026         }
3027
3028         /* We are ready to run. */
3029         b43_set_status(dev, B43_STAT_STARTED);
3030
3031         /* Start data flow (TX/RX). */
3032         b43_mac_enable(dev);
3033         b43_interrupt_enable(dev, dev->irq_savedstate);
3034         ieee80211_start_queues(dev->wl->hw);
3035
3036         /* Start maintainance work */
3037         b43_periodic_tasks_setup(dev);
3038
3039         b43dbg(dev->wl, "Wireless interface started\n");
3040       out:
3041         return err;
3042 }
3043
3044 /* Get PHY and RADIO versioning numbers */
3045 static int b43_phy_versioning(struct b43_wldev *dev)
3046 {
3047         struct b43_phy *phy = &dev->phy;
3048         u32 tmp;
3049         u8 analog_type;
3050         u8 phy_type;
3051         u8 phy_rev;
3052         u16 radio_manuf;
3053         u16 radio_ver;
3054         u16 radio_rev;
3055         int unsupported = 0;
3056
3057         /* Get PHY versioning */
3058         tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3059         analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3060         phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3061         phy_rev = (tmp & B43_PHYVER_VERSION);
3062         switch (phy_type) {
3063         case B43_PHYTYPE_A:
3064                 if (phy_rev >= 4)
3065                         unsupported = 1;
3066                 break;
3067         case B43_PHYTYPE_B:
3068                 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3069                     && phy_rev != 7)
3070                         unsupported = 1;
3071                 break;
3072         case B43_PHYTYPE_G:
3073                 if (phy_rev > 8)
3074                         unsupported = 1;
3075                 break;
3076         default:
3077                 unsupported = 1;
3078         };
3079         if (unsupported) {
3080                 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3081                        "(Analog %u, Type %u, Revision %u)\n",
3082                        analog_type, phy_type, phy_rev);
3083                 return -EOPNOTSUPP;
3084         }
3085         b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3086                analog_type, phy_type, phy_rev);
3087
3088         /* Get RADIO versioning */
3089         if (dev->dev->bus->chip_id == 0x4317) {
3090                 if (dev->dev->bus->chip_rev == 0)
3091                         tmp = 0x3205017F;
3092                 else if (dev->dev->bus->chip_rev == 1)
3093                         tmp = 0x4205017F;
3094                 else
3095                         tmp = 0x5205017F;
3096         } else {
3097                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3098                 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH);
3099                 tmp <<= 16;
3100                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3101                 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3102         }
3103         radio_manuf = (tmp & 0x00000FFF);
3104         radio_ver = (tmp & 0x0FFFF000) >> 12;
3105         radio_rev = (tmp & 0xF0000000) >> 28;
3106         switch (phy_type) {
3107         case B43_PHYTYPE_A:
3108                 if (radio_ver != 0x2060)
3109                         unsupported = 1;
3110                 if (radio_rev != 1)
3111                         unsupported = 1;
3112                 if (radio_manuf != 0x17F)
3113                         unsupported = 1;
3114                 break;
3115         case B43_PHYTYPE_B:
3116                 if ((radio_ver & 0xFFF0) != 0x2050)
3117                         unsupported = 1;
3118                 break;
3119         case B43_PHYTYPE_G:
3120                 if (radio_ver != 0x2050)
3121                         unsupported = 1;
3122                 break;
3123         default:
3124                 B43_WARN_ON(1);
3125         }
3126         if (unsupported) {
3127                 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3128                        "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3129                        radio_manuf, radio_ver, radio_rev);
3130                 return -EOPNOTSUPP;
3131         }
3132         b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3133                radio_manuf, radio_ver, radio_rev);
3134
3135         phy->radio_manuf = radio_manuf;
3136         phy->radio_ver = radio_ver;
3137         phy->radio_rev = radio_rev;
3138
3139         phy->analog = analog_type;
3140         phy->type = phy_type;
3141         phy->rev = phy_rev;
3142
3143         return 0;
3144 }
3145
3146 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3147                                       struct b43_phy *phy)
3148 {
3149         struct b43_txpower_lo_control *lo;
3150         int i;
3151
3152         memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3153         memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3154
3155         /* Flags */
3156         phy->locked = 0;
3157
3158         phy->aci_enable = 0;
3159         phy->aci_wlan_automatic = 0;
3160         phy->aci_hw_rssi = 0;
3161
3162         phy->radio_off_context.valid = 0;
3163
3164         lo = phy->lo_control;
3165         if (lo) {
3166                 memset(lo, 0, sizeof(*(phy->lo_control)));
3167                 lo->rebuild = 1;
3168                 lo->tx_bias = 0xFF;
3169         }
3170         phy->max_lb_gain = 0;
3171         phy->trsw_rx_gain = 0;
3172         phy->txpwr_offset = 0;
3173
3174         /* NRSSI */
3175         phy->nrssislope = 0;
3176         for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3177                 phy->nrssi[i] = -1000;
3178         for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3179                 phy->nrssi_lt[i] = i;
3180
3181         phy->lofcal = 0xFFFF;
3182         phy->initval = 0xFFFF;
3183
3184         spin_lock_init(&phy->lock);
3185         phy->interfmode = B43_INTERFMODE_NONE;
3186         phy->channel = 0xFF;
3187
3188         phy->hardware_power_control = !!modparam_hwpctl;
3189 }
3190
3191 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3192 {
3193         /* Flags */
3194         dev->reg124_set_0x4 = 0;
3195         /* Assume the radio is enabled. If it's not enabled, the state will
3196          * immediately get fixed on the first periodic work run. */
3197         dev->radio_hw_enable = 1;
3198
3199         /* Stats */
3200         memset(&dev->stats, 0, sizeof(dev->stats));
3201
3202         setup_struct_phy_for_init(dev, &dev->phy);
3203
3204         /* IRQ related flags */
3205         dev->irq_reason = 0;
3206         memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3207         dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3208
3209         dev->mac_suspended = 1;
3210
3211         /* Noise calculation context */
3212         memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3213 }
3214
3215 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3216 {
3217         struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3218         u32 hf;
3219
3220         if (!(sprom->r1.boardflags_lo & B43_BFL_BTCOEXIST))
3221                 return;
3222         if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3223                 return;
3224
3225         hf = b43_hf_read(dev);
3226         if (sprom->r1.boardflags_lo & B43_BFL_BTCMOD)
3227                 hf |= B43_HF_BTCOEXALT;
3228         else
3229                 hf |= B43_HF_BTCOEX;
3230         b43_hf_write(dev, hf);
3231         //TODO
3232 }
3233
3234 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3235 {                               //TODO
3236 }
3237
3238 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3239 {
3240 #ifdef CONFIG_SSB_DRIVER_PCICORE
3241         struct ssb_bus *bus = dev->dev->bus;
3242         u32 tmp;
3243
3244         if (bus->pcicore.dev &&
3245             bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3246             bus->pcicore.dev->id.revision <= 5) {
3247                 /* IMCFGLO timeouts workaround. */
3248                 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3249                 tmp &= ~SSB_IMCFGLO_REQTO;
3250                 tmp &= ~SSB_IMCFGLO_SERTO;
3251                 switch (bus->bustype) {
3252                 case SSB_BUSTYPE_PCI:
3253                 case SSB_BUSTYPE_PCMCIA:
3254                         tmp |= 0x32;
3255                         break;
3256                 case SSB_BUSTYPE_SSB:
3257                         tmp |= 0x53;
3258                         break;
3259                 }
3260                 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3261         }
3262 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3263 }
3264
3265 /* Shutdown a wireless core */
3266 /* Locking: wl->mutex */
3267 static void b43_wireless_core_exit(struct b43_wldev *dev)
3268 {
3269         struct b43_phy *phy = &dev->phy;
3270
3271         B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3272         if (b43_status(dev) != B43_STAT_INITIALIZED)
3273                 return;
3274         b43_set_status(dev, B43_STAT_UNINIT);
3275
3276         mutex_unlock(&dev->wl->mutex);
3277         b43_rfkill_exit(dev);
3278         mutex_lock(&dev->wl->mutex);
3279
3280         b43_rng_exit(dev->wl);
3281         b43_pio_free(dev);
3282         b43_dma_free(dev);
3283         b43_chip_exit(dev);
3284         b43_radio_turn_off(dev, 1);
3285         b43_switch_analog(dev, 0);
3286         if (phy->dyn_tssi_tbl)
3287                 kfree(phy->tssi2dbm);
3288         kfree(phy->lo_control);
3289         phy->lo_control = NULL;
3290         ssb_device_disable(dev->dev, 0);
3291         ssb_bus_may_powerdown(dev->dev->bus);
3292 }
3293
3294 /* Initialize a wireless core */
3295 static int b43_wireless_core_init(struct b43_wldev *dev)
3296 {
3297         struct b43_wl *wl = dev->wl;
3298         struct ssb_bus *bus = dev->dev->bus;
3299         struct ssb_sprom *sprom = &bus->sprom;
3300         struct b43_phy *phy = &dev->phy;
3301         int err;
3302         u32 hf, tmp;
3303
3304         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3305
3306         err = ssb_bus_powerup(bus, 0);
3307         if (err)
3308                 goto out;
3309         if (!ssb_device_is_enabled(dev->dev)) {
3310                 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3311                 b43_wireless_core_reset(dev, tmp);
3312         }
3313
3314         if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3315                 phy->lo_control =
3316                     kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3317                 if (!phy->lo_control) {
3318                         err = -ENOMEM;
3319                         goto err_busdown;
3320                 }
3321         }
3322         setup_struct_wldev_for_init(dev);
3323
3324         err = b43_phy_init_tssi2dbm_table(dev);
3325         if (err)
3326                 goto err_kfree_lo_control;
3327
3328         /* Enable IRQ routing to this device. */
3329         ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3330
3331         b43_imcfglo_timeouts_workaround(dev);
3332         b43_bluetooth_coext_disable(dev);
3333         b43_phy_early_init(dev);
3334         err = b43_chip_init(dev);
3335         if (err)
3336                 goto err_kfree_tssitbl;
3337         b43_shm_write16(dev, B43_SHM_SHARED,
3338                         B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3339         hf = b43_hf_read(dev);
3340         if (phy->type == B43_PHYTYPE_G) {
3341                 hf |= B43_HF_SYMW;
3342                 if (phy->rev == 1)
3343                         hf |= B43_HF_GDCW;
3344                 if (sprom->r1.boardflags_lo & B43_BFL_PACTRL)
3345                         hf |= B43_HF_OFDMPABOOST;
3346         } else if (phy->type == B43_PHYTYPE_B) {
3347                 hf |= B43_HF_SYMW;
3348                 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3349                         hf &= ~B43_HF_GDCW;
3350         }
3351         b43_hf_write(dev, hf);
3352
3353         /* Short/Long Retry Limit.
3354          * The retry-limit is a 4-bit counter. Enforce this to avoid overflowing
3355          * the chip-internal counter.
3356          */
3357         tmp = limit_value(modparam_short_retry, 0, 0xF);
3358         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, tmp);
3359         tmp = limit_value(modparam_long_retry, 0, 0xF);
3360         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, tmp);
3361
3362         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3363         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3364
3365         /* Disable sending probe responses from firmware.
3366          * Setting the MaxTime to one usec will always trigger
3367          * a timeout, so we never send any probe resp.
3368          * A timeout of zero is infinite. */
3369         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3370
3371         b43_rate_memory_init(dev);
3372
3373         /* Minimum Contention Window */
3374         if (phy->type == B43_PHYTYPE_B) {
3375                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3376         } else {
3377                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3378         }
3379         /* Maximum Contention Window */
3380         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3381
3382         do {
3383                 if (b43_using_pio(dev)) {
3384                         err = b43_pio_init(dev);
3385                 } else {
3386                         err = b43_dma_init(dev);
3387                         if (!err)
3388                                 b43_qos_init(dev);
3389                 }
3390         } while (err == -EAGAIN);
3391         if (err)
3392                 goto err_chip_exit;
3393
3394 //FIXME
3395 #if 1
3396         b43_write16(dev, 0x0612, 0x0050);
3397         b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
3398         b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
3399 #endif
3400
3401         b43_bluetooth_coext_enable(dev);
3402
3403         ssb_bus_powerup(bus, 1);        /* Enable dynamic PCTL */
3404         memset(wl->bssid, 0, ETH_ALEN);
3405         memset(wl->mac_addr, 0, ETH_ALEN);
3406         b43_upload_card_macaddress(dev);
3407         b43_security_init(dev);
3408         b43_rfkill_init(dev);
3409         b43_rng_init(wl);
3410
3411         b43_set_status(dev, B43_STAT_INITIALIZED);
3412
3413       out:
3414         return err;
3415
3416       err_chip_exit:
3417         b43_chip_exit(dev);
3418       err_kfree_tssitbl:
3419         if (phy->dyn_tssi_tbl)
3420                 kfree(phy->tssi2dbm);
3421       err_kfree_lo_control:
3422         kfree(phy->lo_control);
3423         phy->lo_control = NULL;
3424       err_busdown:
3425         ssb_bus_may_powerdown(bus);
3426         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3427         return err;
3428 }
3429
3430 static int b43_add_interface(struct ieee80211_hw *hw,
3431                              struct ieee80211_if_init_conf *conf)
3432 {
3433         struct b43_wl *wl = hw_to_b43_wl(hw);
3434         struct b43_wldev *dev;
3435         unsigned long flags;
3436         int err = -EOPNOTSUPP;
3437
3438         /* TODO: allow WDS/AP devices to coexist */
3439
3440         if (conf->type != IEEE80211_IF_TYPE_AP &&
3441             conf->type != IEEE80211_IF_TYPE_STA &&
3442             conf->type != IEEE80211_IF_TYPE_WDS &&
3443             conf->type != IEEE80211_IF_TYPE_IBSS)
3444                 return -EOPNOTSUPP;
3445
3446         mutex_lock(&wl->mutex);
3447         if (wl->operating)
3448                 goto out_mutex_unlock;
3449
3450         b43dbg(wl, "Adding Interface type %d\n", conf->type);
3451
3452         dev = wl->current_dev;
3453         wl->operating = 1;
3454         wl->if_id = conf->if_id;
3455         wl->if_type = conf->type;
3456         memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3457
3458         spin_lock_irqsave(&wl->irq_lock, flags);
3459         b43_adjust_opmode(dev);
3460         b43_upload_card_macaddress(dev);
3461         spin_unlock_irqrestore(&wl->irq_lock, flags);
3462
3463         err = 0;
3464  out_mutex_unlock:
3465         mutex_unlock(&wl->mutex);
3466
3467         return err;
3468 }
3469
3470 static void b43_remove_interface(struct ieee80211_hw *hw,
3471                                  struct ieee80211_if_init_conf *conf)
3472 {
3473         struct b43_wl *wl = hw_to_b43_wl(hw);
3474         struct b43_wldev *dev = wl->current_dev;
3475         unsigned long flags;
3476
3477         b43dbg(wl, "Removing Interface type %d\n", conf->type);
3478
3479         mutex_lock(&wl->mutex);
3480
3481         B43_WARN_ON(!wl->operating);
3482         B43_WARN_ON(wl->if_id != conf->if_id);
3483
3484         wl->operating = 0;
3485
3486         spin_lock_irqsave(&wl->irq_lock, flags);
3487         b43_adjust_opmode(dev);
3488         memset(wl->mac_addr, 0, ETH_ALEN);
3489         b43_upload_card_macaddress(dev);
3490         spin_unlock_irqrestore(&wl->irq_lock, flags);
3491
3492         mutex_unlock(&wl->mutex);
3493 }
3494
3495 static int b43_start(struct ieee80211_hw *hw)
3496 {
3497         struct b43_wl *wl = hw_to_b43_wl(hw);
3498         struct b43_wldev *dev = wl->current_dev;
3499         int did_init = 0;
3500         int err = 0;
3501
3502         mutex_lock(&wl->mutex);
3503
3504         if (b43_status(dev) < B43_STAT_INITIALIZED) {
3505                 err = b43_wireless_core_init(dev);
3506                 if (err)
3507                         goto out_mutex_unlock;
3508                 did_init = 1;
3509         }
3510
3511         if (b43_status(dev) < B43_STAT_STARTED) {
3512                 err = b43_wireless_core_start(dev);
3513                 if (err) {
3514                         if (did_init)
3515                                 b43_wireless_core_exit(dev);
3516                         goto out_mutex_unlock;
3517                 }
3518         }
3519
3520  out_mutex_unlock:
3521         mutex_unlock(&wl->mutex);
3522
3523         return err;
3524 }
3525
3526 static void b43_stop(struct ieee80211_hw *hw)
3527 {
3528         struct b43_wl *wl = hw_to_b43_wl(hw);
3529         struct b43_wldev *dev = wl->current_dev;
3530
3531         mutex_lock(&wl->mutex);
3532         if (b43_status(dev) >= B43_STAT_STARTED)
3533                 b43_wireless_core_stop(dev);
3534         b43_wireless_core_exit(dev);
3535         mutex_unlock(&wl->mutex);
3536 }
3537
3538 static const struct ieee80211_ops b43_hw_ops = {
3539         .tx = b43_tx,
3540         .conf_tx = b43_conf_tx,
3541         .add_interface = b43_add_interface,
3542         .remove_interface = b43_remove_interface,
3543         .config = b43_dev_config,
3544         .config_interface = b43_config_interface,
3545         .configure_filter = b43_configure_filter,
3546         .set_key = b43_dev_set_key,
3547         .get_stats = b43_get_stats,
3548         .get_tx_stats = b43_get_tx_stats,
3549         .start = b43_start,
3550         .stop = b43_stop,
3551 };
3552
3553 /* Hard-reset the chip. Do not call this directly.
3554  * Use b43_controller_restart()
3555  */
3556 static void b43_chip_reset(struct work_struct *work)
3557 {
3558         struct b43_wldev *dev =
3559             container_of(work, struct b43_wldev, restart_work);
3560         struct b43_wl *wl = dev->wl;
3561         int err = 0;
3562         int prev_status;
3563
3564         mutex_lock(&wl->mutex);
3565
3566         prev_status = b43_status(dev);
3567         /* Bring the device down... */
3568         if (prev_status >= B43_STAT_STARTED)
3569                 b43_wireless_core_stop(dev);
3570         if (prev_status >= B43_STAT_INITIALIZED)
3571                 b43_wireless_core_exit(dev);
3572
3573         /* ...and up again. */
3574         if (prev_status >= B43_STAT_INITIALIZED) {
3575                 err = b43_wireless_core_init(dev);
3576                 if (err)
3577                         goto out;
3578         }
3579         if (prev_status >= B43_STAT_STARTED) {
3580                 err = b43_wireless_core_start(dev);
3581                 if (err) {
3582                         b43_wireless_core_exit(dev);
3583                         goto out;
3584                 }
3585         }
3586       out:
3587         mutex_unlock(&wl->mutex);
3588         if (err)
3589                 b43err(wl, "Controller restart FAILED\n");
3590         else
3591                 b43info(wl, "Controller restarted\n");
3592 }
3593
3594 static int b43_setup_modes(struct b43_wldev *dev,
3595                            int have_aphy, int have_bphy, int have_gphy)
3596 {
3597         struct ieee80211_hw *hw = dev->wl->hw;
3598         struct ieee80211_hw_mode *mode;
3599         struct b43_phy *phy = &dev->phy;
3600         int cnt = 0;
3601         int err;
3602
3603 /*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */
3604         have_aphy = 0;
3605
3606         phy->possible_phymodes = 0;
3607         for (; 1; cnt++) {
3608                 if (have_aphy) {
3609                         B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3610                         mode = &phy->hwmodes[cnt];
3611
3612                         mode->mode = MODE_IEEE80211A;
3613                         mode->num_channels = b43_a_chantable_size;
3614                         mode->channels = b43_a_chantable;
3615                         mode->num_rates = b43_a_ratetable_size;
3616                         mode->rates = b43_a_ratetable;
3617                         err = ieee80211_register_hwmode(hw, mode);
3618                         if (err)
3619                                 return err;
3620
3621                         phy->possible_phymodes |= B43_PHYMODE_A;
3622                         have_aphy = 0;
3623                         continue;
3624                 }
3625                 if (have_bphy) {
3626                         B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3627                         mode = &phy->hwmodes[cnt];
3628
3629                         mode->mode = MODE_IEEE80211B;
3630                         mode->num_channels = b43_bg_chantable_size;
3631                         mode->channels = b43_bg_chantable;
3632                         mode->num_rates = b43_b_ratetable_size;
3633                         mode->rates = b43_b_ratetable;
3634                         err = ieee80211_register_hwmode(hw, mode);
3635                         if (err)
3636                                 return err;
3637
3638                         phy->possible_phymodes |= B43_PHYMODE_B;
3639                         have_bphy = 0;
3640                         continue;
3641                 }
3642                 if (have_gphy) {
3643                         B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3644                         mode = &phy->hwmodes[cnt];
3645
3646                         mode->mode = MODE_IEEE80211G;
3647                         mode->num_channels = b43_bg_chantable_size;
3648                         mode->channels = b43_bg_chantable;
3649                         mode->num_rates = b43_g_ratetable_size;
3650                         mode->rates = b43_g_ratetable;
3651                         err = ieee80211_register_hwmode(hw, mode);
3652                         if (err)
3653                                 return err;
3654
3655                         phy->possible_phymodes |= B43_PHYMODE_G;
3656                         have_gphy = 0;
3657                         continue;
3658                 }
3659                 break;
3660         }
3661
3662         return 0;
3663 }
3664
3665 static void b43_wireless_core_detach(struct b43_wldev *dev)
3666 {
3667         /* We release firmware that late to not be required to re-request
3668          * is all the time when we reinit the core. */
3669         b43_release_firmware(dev);
3670 }
3671
3672 static int b43_wireless_core_attach(struct b43_wldev *dev)
3673 {
3674         struct b43_wl *wl = dev->wl;
3675         struct ssb_bus *bus = dev->dev->bus;
3676         struct pci_dev *pdev = bus->host_pci;
3677         int err;
3678         int have_aphy = 0, have_bphy = 0, have_gphy = 0;
3679         u32 tmp;
3680
3681         /* Do NOT do any device initialization here.
3682          * Do it in wireless_core_init() instead.
3683          * This function is for gathering basic information about the HW, only.
3684          * Also some structs may be set up here. But most likely you want to have
3685          * that in core_init(), too.
3686          */
3687
3688         err = ssb_bus_powerup(bus, 0);
3689         if (err) {
3690                 b43err(wl, "Bus powerup failed\n");
3691                 goto out;
3692         }
3693         /* Get the PHY type. */
3694         if (dev->dev->id.revision >= 5) {
3695                 u32 tmshigh;
3696
3697                 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3698                 have_aphy = !!(tmshigh & B43_TMSHIGH_APHY);
3699                 have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY);
3700                 if (!have_aphy && !have_gphy)
3701                         have_bphy = 1;
3702         } else if (dev->dev->id.revision == 4) {
3703                 have_gphy = 1;
3704                 have_aphy = 1;
3705         } else
3706                 have_bphy = 1;
3707
3708         dev->phy.gmode = (have_gphy || have_bphy);
3709         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3710         b43_wireless_core_reset(dev, tmp);
3711
3712         err = b43_phy_versioning(dev);
3713         if (err)
3714                 goto err_powerdown;
3715         /* Check if this device supports multiband. */
3716         if (!pdev ||
3717             (pdev->device != 0x4312 &&
3718              pdev->device != 0x4319 && pdev->device != 0x4324)) {
3719                 /* No multiband support. */
3720                 have_aphy = 0;
3721                 have_bphy = 0;
3722                 have_gphy = 0;
3723                 switch (dev->phy.type) {
3724                 case B43_PHYTYPE_A:
3725                         have_aphy = 1;
3726                         break;
3727                 case B43_PHYTYPE_B:
3728                         have_bphy = 1;
3729                         break;
3730                 case B43_PHYTYPE_G:
3731                         have_gphy = 1;
3732                         break;
3733                 default:
3734                         B43_WARN_ON(1);
3735                 }
3736         }
3737         dev->phy.gmode = (have_gphy || have_bphy);
3738         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3739         b43_wireless_core_reset(dev, tmp);
3740
3741         err = b43_validate_chipaccess(dev);
3742         if (err)
3743                 goto err_powerdown;
3744         err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy);
3745         if (err)
3746                 goto err_powerdown;
3747
3748         /* Now set some default "current_dev" */
3749         if (!wl->current_dev)
3750                 wl->current_dev = dev;
3751         INIT_WORK(&dev->restart_work, b43_chip_reset);
3752
3753         b43_radio_turn_off(dev, 1);
3754         b43_switch_analog(dev, 0);
3755         ssb_device_disable(dev->dev, 0);
3756         ssb_bus_may_powerdown(bus);
3757
3758 out:
3759         return err;
3760
3761 err_powerdown:
3762         ssb_bus_may_powerdown(bus);
3763         return err;
3764 }
3765
3766 static void b43_one_core_detach(struct ssb_device *dev)
3767 {
3768         struct b43_wldev *wldev;
3769         struct b43_wl *wl;
3770
3771         wldev = ssb_get_drvdata(dev);
3772         wl = wldev->wl;
3773         cancel_work_sync(&wldev->restart_work);
3774         b43_debugfs_remove_device(wldev);
3775         b43_wireless_core_detach(wldev);
3776         list_del(&wldev->list);
3777         wl->nr_devs--;
3778         ssb_set_drvdata(dev, NULL);
3779         kfree(wldev);
3780 }
3781
3782 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
3783 {
3784         struct b43_wldev *wldev;
3785         struct pci_dev *pdev;
3786         int err = -ENOMEM;
3787
3788         if (!list_empty(&wl->devlist)) {
3789                 /* We are not the first core on this chip. */
3790                 pdev = dev->bus->host_pci;
3791                 /* Only special chips support more than one wireless
3792                  * core, although some of the other chips have more than
3793                  * one wireless core as well. Check for this and
3794                  * bail out early.
3795                  */
3796                 if (!pdev ||
3797                     ((pdev->device != 0x4321) &&
3798                      (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
3799                         b43dbg(wl, "Ignoring unconnected 802.11 core\n");
3800                         return -ENODEV;
3801                 }
3802         }
3803
3804         wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3805         if (!wldev)
3806                 goto out;
3807
3808         wldev->dev = dev;
3809         wldev->wl = wl;
3810         b43_set_status(wldev, B43_STAT_UNINIT);
3811         wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3812         tasklet_init(&wldev->isr_tasklet,
3813                      (void (*)(unsigned long))b43_interrupt_tasklet,
3814                      (unsigned long)wldev);
3815         if (modparam_pio)
3816                 wldev->__using_pio = 1;
3817         INIT_LIST_HEAD(&wldev->list);
3818
3819         err = b43_wireless_core_attach(wldev);
3820         if (err)
3821                 goto err_kfree_wldev;
3822
3823         list_add(&wldev->list, &wl->devlist);
3824         wl->nr_devs++;
3825         ssb_set_drvdata(dev, wldev);
3826         b43_debugfs_add_device(wldev);
3827
3828       out:
3829         return err;
3830
3831       err_kfree_wldev:
3832         kfree(wldev);
3833         return err;
3834 }
3835
3836 static void b43_sprom_fixup(struct ssb_bus *bus)
3837 {
3838         /* boardflags workarounds */
3839         if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
3840             bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
3841                 bus->sprom.r1.boardflags_lo |= B43_BFL_BTCOEXIST;
3842         if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3843             bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
3844                 bus->sprom.r1.boardflags_lo |= B43_BFL_PACTRL;
3845
3846         /* Handle case when gain is not set in sprom */
3847         if (bus->sprom.r1.antenna_gain_a == 0xFF)
3848                 bus->sprom.r1.antenna_gain_a = 2;
3849         if (bus->sprom.r1.antenna_gain_bg == 0xFF)
3850                 bus->sprom.r1.antenna_gain_bg = 2;
3851
3852         /* Convert Antennagain values to Q5.2 */
3853         bus->sprom.r1.antenna_gain_a <<= 2;
3854         bus->sprom.r1.antenna_gain_bg <<= 2;
3855 }
3856
3857 static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
3858 {
3859         struct ieee80211_hw *hw = wl->hw;
3860
3861         ssb_set_devtypedata(dev, NULL);
3862         ieee80211_free_hw(hw);
3863 }
3864
3865 static int b43_wireless_init(struct ssb_device *dev)
3866 {
3867         struct ssb_sprom *sprom = &dev->bus->sprom;
3868         struct ieee80211_hw *hw;
3869         struct b43_wl *wl;
3870         int err = -ENOMEM;
3871
3872         b43_sprom_fixup(dev->bus);
3873
3874         hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
3875         if (!hw) {
3876                 b43err(NULL, "Could not allocate ieee80211 device\n");
3877                 goto out;
3878         }
3879
3880         /* fill hw info */
3881         hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
3882         hw->max_signal = 100;
3883         hw->max_rssi = -110;
3884         hw->max_noise = -110;
3885         hw->queues = 1;         /* FIXME: hardware has more queues */
3886         SET_IEEE80211_DEV(hw, dev->dev);
3887         if (is_valid_ether_addr(sprom->r1.et1mac))
3888                 SET_IEEE80211_PERM_ADDR(hw, sprom->r1.et1mac);
3889         else
3890                 SET_IEEE80211_PERM_ADDR(hw, sprom->r1.il0mac);
3891
3892         /* Get and initialize struct b43_wl */
3893         wl = hw_to_b43_wl(hw);
3894         memset(wl, 0, sizeof(*wl));
3895         wl->hw = hw;
3896         spin_lock_init(&wl->irq_lock);
3897         spin_lock_init(&wl->leds_lock);
3898         mutex_init(&wl->mutex);
3899         INIT_LIST_HEAD(&wl->devlist);
3900
3901         ssb_set_devtypedata(dev, wl);
3902         b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
3903         err = 0;
3904       out:
3905         return err;
3906 }
3907
3908 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
3909 {
3910         struct b43_wl *wl;
3911         int err;
3912         int first = 0;
3913
3914         wl = ssb_get_devtypedata(dev);
3915         if (!wl) {
3916                 /* Probing the first core. Must setup common struct b43_wl */
3917                 first = 1;
3918                 err = b43_wireless_init(dev);
3919                 if (err)
3920                         goto out;
3921                 wl = ssb_get_devtypedata(dev);
3922                 B43_WARN_ON(!wl);
3923         }
3924         err = b43_one_core_attach(dev, wl);
3925         if (err)
3926                 goto err_wireless_exit;
3927
3928         if (first) {
3929                 err = ieee80211_register_hw(wl->hw);
3930                 if (err)
3931                         goto err_one_core_detach;
3932         }
3933
3934       out:
3935         return err;
3936
3937       err_one_core_detach:
3938         b43_one_core_detach(dev);
3939       err_wireless_exit:
3940         if (first)
3941                 b43_wireless_exit(dev, wl);
3942         return err;
3943 }
3944
3945 static void b43_remove(struct ssb_device *dev)
3946 {
3947         struct b43_wl *wl = ssb_get_devtypedata(dev);
3948         struct b43_wldev *wldev = ssb_get_drvdata(dev);
3949
3950         B43_WARN_ON(!wl);
3951         if (wl->current_dev == wldev)
3952                 ieee80211_unregister_hw(wl->hw);
3953
3954         b43_one_core_detach(dev);
3955
3956         if (list_empty(&wl->devlist)) {
3957                 /* Last core on the chip unregistered.
3958                  * We can destroy common struct b43_wl.
3959                  */
3960                 b43_wireless_exit(dev, wl);
3961         }
3962 }
3963
3964 /* Perform a hardware reset. This can be called from any context. */
3965 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
3966 {
3967         /* Must avoid requeueing, if we are in shutdown. */
3968         if (b43_status(dev) < B43_STAT_INITIALIZED)
3969                 return;
3970         b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
3971         queue_work(dev->wl->hw->workqueue, &dev->restart_work);
3972 }
3973
3974 #ifdef CONFIG_PM
3975
3976 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
3977 {
3978         struct b43_wldev *wldev = ssb_get_drvdata(dev);
3979         struct b43_wl *wl = wldev->wl;
3980
3981         b43dbg(wl, "Suspending...\n");
3982
3983         mutex_lock(&wl->mutex);
3984         wldev->suspend_init_status = b43_status(wldev);
3985         if (wldev->suspend_init_status >= B43_STAT_STARTED)
3986                 b43_wireless_core_stop(wldev);
3987         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
3988                 b43_wireless_core_exit(wldev);
3989         mutex_unlock(&wl->mutex);
3990
3991         b43dbg(wl, "Device suspended.\n");
3992
3993         return 0;
3994 }
3995
3996 static int b43_resume(struct ssb_device *dev)
3997 {
3998         struct b43_wldev *wldev = ssb_get_drvdata(dev);
3999         struct b43_wl *wl = wldev->wl;
4000         int err = 0;
4001
4002         b43dbg(wl, "Resuming...\n");
4003
4004         mutex_lock(&wl->mutex);
4005         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4006                 err = b43_wireless_core_init(wldev);
4007                 if (err) {
4008                         b43err(wl, "Resume failed at core init\n");
4009                         goto out;
4010                 }
4011         }
4012         if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4013                 err = b43_wireless_core_start(wldev);
4014                 if (err) {
4015                         b43_wireless_core_exit(wldev);
4016                         b43err(wl, "Resume failed at core start\n");
4017                         goto out;
4018                 }
4019         }
4020         mutex_unlock(&wl->mutex);
4021
4022         b43dbg(wl, "Device resumed.\n");
4023       out:
4024         return err;
4025 }
4026
4027 #else /* CONFIG_PM */
4028 # define b43_suspend    NULL
4029 # define b43_resume     NULL
4030 #endif /* CONFIG_PM */
4031
4032 static struct ssb_driver b43_ssb_driver = {
4033         .name           = KBUILD_MODNAME,
4034         .id_table       = b43_ssb_tbl,
4035         .probe          = b43_probe,
4036         .remove         = b43_remove,
4037         .suspend        = b43_suspend,
4038         .resume         = b43_resume,
4039 };
4040
4041 static int __init b43_init(void)
4042 {
4043         int err;
4044
4045         b43_debugfs_init();
4046         err = b43_pcmcia_init();
4047         if (err)
4048                 goto err_dfs_exit;
4049         err = ssb_driver_register(&b43_ssb_driver);
4050         if (err)
4051                 goto err_pcmcia_exit;
4052
4053         return err;
4054
4055 err_pcmcia_exit:
4056         b43_pcmcia_exit();
4057 err_dfs_exit:
4058         b43_debugfs_exit();
4059         return err;
4060 }
4061
4062 static void __exit b43_exit(void)
4063 {
4064         ssb_driver_unregister(&b43_ssb_driver);
4065         b43_pcmcia_exit();
4066         b43_debugfs_exit();
4067 }
4068
4069 module_init(b43_init)
4070 module_exit(b43_exit)