drivers/net/wireless/b43/main.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
   6   Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
   7   Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
   8   Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
   9   Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
  10
  11   Some parts of the code in this file are derived from the ipw2200
  12   driver  Copyright(c) 2003 - 2004 Intel Corporation.
  13
  14   This program is free software; you can redistribute it and/or modify
  15   it under the terms of the GNU General Public License as published by
  16   the Free Software Foundation; either version 2 of the License, or
  17   (at your option) any later version.
  18
  19   This program is distributed in the hope that it will be useful,
  20   but WITHOUT ANY WARRANTY; without even the implied warranty of
  21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22   GNU General Public License for more details.
  23
  24   You should have received a copy of the GNU General Public License
  25   along with this program; see the file COPYING.  If not, write to
  26   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  27   Boston, MA 02110-1301, USA.
  28
  29 */
  30
  31 #include <linux/delay.h>
  32 #include <linux/init.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/if_arp.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/version.h>
  37 #include <linux/firmware.h>
  38 #include <linux/wireless.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/skbuff.h>
  41 #include <linux/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 "sysfs.h"
  50 #include "xmit.h"
  51 #include "lo.h"
  52 #include "pcmcia.h"
  53
  54 MODULE_DESCRIPTION("Broadcom B43 wireless driver");
  55 MODULE_AUTHOR("Martin Langer");
  56 MODULE_AUTHOR("Stefano Brivio");
  57 MODULE_AUTHOR("Michael Buesch");
  58 MODULE_LICENSE("GPL");
  59
  60
  61 static int modparam_bad_frames_preempt;
  62 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
  63 MODULE_PARM_DESC(bad_frames_preempt,
  64                  "enable(1) / disable(0) Bad Frames Preemption");
  65
  66 static char modparam_fwpostfix[16];
  67 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
  68 MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
  69
  70 static int modparam_hwpctl;
  71 module_param_named(hwpctl, modparam_hwpctl, int, 0444);
  72 MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
  73
  74 static int modparam_nohwcrypt;
  75 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
  76 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  77
  78 static const struct ssb_device_id b43_ssb_tbl[] = {
  79         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
  80         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
  81         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
  82         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
  83         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
  84         SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
  85         SSB_DEVTABLE_END
  86 };
  87
  88 MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
  89
  90 /* Channel and ratetables are shared for all devices.
  91  * They can't be const, because ieee80211 puts some precalculated
  92  * data in there. This data is the same for all devices, so we don't
  93  * get concurrency issues */
  94 #define RATETAB_ENT(_rateid, _flags) \
  95         {                                                       \
  96                 .rate   = B43_RATE_TO_BASE100KBPS(_rateid),     \
  97                 .val    = (_rateid),                            \
  98                 .val2   = (_rateid),                            \
  99                 .flags  = (_flags),                             \
 100         }
 101 static struct ieee80211_rate __b43_ratetable[] = {
 102         RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK),
 103         RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2),
 104         RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2),
 105         RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2),
 106         RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM),
 107         RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM),
 108         RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM),
 109         RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM),
 110         RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM),
 111         RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM),
 112         RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM),
 113         RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM),
 114 };
 115
 116 #define b43_a_ratetable         (__b43_ratetable + 4)
 117 #define b43_a_ratetable_size    8
 118 #define b43_b_ratetable         (__b43_ratetable + 0)
 119 #define b43_b_ratetable_size    4
 120 #define b43_g_ratetable         (__b43_ratetable + 0)
 121 #define b43_g_ratetable_size    12
 122
 123 #define CHANTAB_ENT(_chanid, _freq) \
 124         {                                                       \
 125                 .chan   = (_chanid),                            \
 126                 .freq   = (_freq),                              \
 127                 .val    = (_chanid),                            \
 128                 .flag   = IEEE80211_CHAN_W_SCAN |               \
 129                           IEEE80211_CHAN_W_ACTIVE_SCAN |        \
 130                           IEEE80211_CHAN_W_IBSS,                \
 131                 .power_level    = 0xFF,                         \
 132                 .antenna_max    = 0xFF,                         \
 133         }
 134 static struct ieee80211_channel b43_bg_chantable[] = {
 135         CHANTAB_ENT(1, 2412),
 136         CHANTAB_ENT(2, 2417),
 137         CHANTAB_ENT(3, 2422),
 138         CHANTAB_ENT(4, 2427),
 139         CHANTAB_ENT(5, 2432),
 140         CHANTAB_ENT(6, 2437),
 141         CHANTAB_ENT(7, 2442),
 142         CHANTAB_ENT(8, 2447),
 143         CHANTAB_ENT(9, 2452),
 144         CHANTAB_ENT(10, 2457),
 145         CHANTAB_ENT(11, 2462),
 146         CHANTAB_ENT(12, 2467),
 147         CHANTAB_ENT(13, 2472),
 148         CHANTAB_ENT(14, 2484),
 149 };
 150
 151 #define b43_bg_chantable_size   ARRAY_SIZE(b43_bg_chantable)
 152 static struct ieee80211_channel b43_a_chantable[] = {
 153         CHANTAB_ENT(36, 5180),
 154         CHANTAB_ENT(40, 5200),
 155         CHANTAB_ENT(44, 5220),
 156         CHANTAB_ENT(48, 5240),
 157         CHANTAB_ENT(52, 5260),
 158         CHANTAB_ENT(56, 5280),
 159         CHANTAB_ENT(60, 5300),
 160         CHANTAB_ENT(64, 5320),
 161         CHANTAB_ENT(149, 5745),
 162         CHANTAB_ENT(153, 5765),
 163         CHANTAB_ENT(157, 5785),
 164         CHANTAB_ENT(161, 5805),
 165         CHANTAB_ENT(165, 5825),
 166 };
 167
 168 #define b43_a_chantable_size    ARRAY_SIZE(b43_a_chantable)
 169
 170 static void b43_wireless_core_exit(struct b43_wldev *dev);
 171 static int b43_wireless_core_init(struct b43_wldev *dev);
 172 static void b43_wireless_core_stop(struct b43_wldev *dev);
 173 static int b43_wireless_core_start(struct b43_wldev *dev);
 174
 175 static int b43_ratelimit(struct b43_wl *wl)
 176 {
 177         if (!wl || !wl->current_dev)
 178                 return 1;
 179         if (b43_status(wl->current_dev) < B43_STAT_STARTED)
 180                 return 1;
 181         /* We are up and running.
 182          * Ratelimit the messages to avoid DoS over the net. */
 183         return net_ratelimit();
 184 }
 185
 186 void b43info(struct b43_wl *wl, const char *fmt, ...)
 187 {
 188         va_list args;
 189
 190         if (!b43_ratelimit(wl))
 191                 return;
 192         va_start(args, fmt);
 193         printk(KERN_INFO "b43-%s: ",
 194                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 195         vprintk(fmt, args);
 196         va_end(args);
 197 }
 198
 199 void b43err(struct b43_wl *wl, const char *fmt, ...)
 200 {
 201         va_list args;
 202
 203         if (!b43_ratelimit(wl))
 204                 return;
 205         va_start(args, fmt);
 206         printk(KERN_ERR "b43-%s ERROR: ",
 207                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 208         vprintk(fmt, args);
 209         va_end(args);
 210 }
 211
 212 void b43warn(struct b43_wl *wl, const char *fmt, ...)
 213 {
 214         va_list args;
 215
 216         if (!b43_ratelimit(wl))
 217                 return;
 218         va_start(args, fmt);
 219         printk(KERN_WARNING "b43-%s warning: ",
 220                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 221         vprintk(fmt, args);
 222         va_end(args);
 223 }
 224
 225 #if B43_DEBUG
 226 void b43dbg(struct b43_wl *wl, const char *fmt, ...)
 227 {
 228         va_list args;
 229
 230         va_start(args, fmt);
 231         printk(KERN_DEBUG "b43-%s debug: ",
 232                (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
 233         vprintk(fmt, args);
 234         va_end(args);
 235 }
 236 #endif /* DEBUG */
 237
 238 static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
 239 {
 240         u32 macctl;
 241
 242         B43_WARN_ON(offset % 4 != 0);
 243
 244         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 245         if (macctl & B43_MACCTL_BE)
 246                 val = swab32(val);
 247
 248         b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
 249         mmiowb();
 250         b43_write32(dev, B43_MMIO_RAM_DATA, val);
 251 }
 252
 253 static inline
 254     void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset)
 255 {
 256         u32 control;
 257
 258         /* "offset" is the WORD offset. */
 259
 260         control = routing;
 261         control <<= 16;
 262         control |= offset;
 263         b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
 264 }
 265
 266 u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
 267 {
 268         u32 ret;
 269
 270         if (routing == B43_SHM_SHARED) {
 271                 B43_WARN_ON(offset & 0x0001);
 272                 if (offset & 0x0003) {
 273                         /* Unaligned access */
 274                         b43_shm_control_word(dev, routing, offset >> 2);
 275                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 276                         ret <<= 16;
 277                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 278                         ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
 279
 280                         return ret;
 281                 }
 282                 offset >>= 2;
 283         }
 284         b43_shm_control_word(dev, routing, offset);
 285         ret = b43_read32(dev, B43_MMIO_SHM_DATA);
 286
 287         return ret;
 288 }
 289
 290 u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
 291 {
 292         u16 ret;
 293
 294         if (routing == B43_SHM_SHARED) {
 295                 B43_WARN_ON(offset & 0x0001);
 296                 if (offset & 0x0003) {
 297                         /* Unaligned access */
 298                         b43_shm_control_word(dev, routing, offset >> 2);
 299                         ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
 300
 301                         return ret;
 302                 }
 303                 offset >>= 2;
 304         }
 305         b43_shm_control_word(dev, routing, offset);
 306         ret = b43_read16(dev, B43_MMIO_SHM_DATA);
 307
 308         return ret;
 309 }
 310
 311 void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
 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                         mmiowb();
 319                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
 320                                     (value >> 16) & 0xffff);
 321                         mmiowb();
 322                         b43_shm_control_word(dev, routing, (offset >> 2) + 1);
 323                         mmiowb();
 324                         b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
 325                         return;
 326                 }
 327                 offset >>= 2;
 328         }
 329         b43_shm_control_word(dev, routing, offset);
 330         mmiowb();
 331         b43_write32(dev, B43_MMIO_SHM_DATA, value);
 332 }
 333
 334 void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
 335 {
 336         if (routing == B43_SHM_SHARED) {
 337                 B43_WARN_ON(offset & 0x0001);
 338                 if (offset & 0x0003) {
 339                         /* Unaligned access */
 340                         b43_shm_control_word(dev, routing, offset >> 2);
 341                         mmiowb();
 342                         b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
 343                         return;
 344                 }
 345                 offset >>= 2;
 346         }
 347         b43_shm_control_word(dev, routing, offset);
 348         mmiowb();
 349         b43_write16(dev, B43_MMIO_SHM_DATA, value);
 350 }
 351
 352 /* Read HostFlags */
 353 u32 b43_hf_read(struct b43_wldev * dev)
 354 {
 355         u32 ret;
 356
 357         ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
 358         ret <<= 16;
 359         ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
 360
 361         return ret;
 362 }
 363
 364 /* Write HostFlags */
 365 void b43_hf_write(struct b43_wldev *dev, u32 value)
 366 {
 367         b43_shm_write16(dev, B43_SHM_SHARED,
 368                         B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
 369         b43_shm_write16(dev, B43_SHM_SHARED,
 370                         B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
 371 }
 372
 373 void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
 374 {
 375         /* We need to be careful. As we read the TSF from multiple
 376          * registers, we should take care of register overflows.
 377          * In theory, the whole tsf read process should be atomic.
 378          * We try to be atomic here, by restaring the read process,
 379          * if any of the high registers changed (overflew).
 380          */
 381         if (dev->dev->id.revision >= 3) {
 382                 u32 low, high, high2;
 383
 384                 do {
 385                         high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 386                         low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
 387                         high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
 388                 } while (unlikely(high != high2));
 389
 390                 *tsf = high;
 391                 *tsf <<= 32;
 392                 *tsf |= low;
 393         } else {
 394                 u64 tmp;
 395                 u16 v0, v1, v2, v3;
 396                 u16 test1, test2, test3;
 397
 398                 do {
 399                         v3 = b43_read16(dev, B43_MMIO_TSF_3);
 400                         v2 = b43_read16(dev, B43_MMIO_TSF_2);
 401                         v1 = b43_read16(dev, B43_MMIO_TSF_1);
 402                         v0 = b43_read16(dev, B43_MMIO_TSF_0);
 403
 404                         test3 = b43_read16(dev, B43_MMIO_TSF_3);
 405                         test2 = b43_read16(dev, B43_MMIO_TSF_2);
 406                         test1 = b43_read16(dev, B43_MMIO_TSF_1);
 407                 } while (v3 != test3 || v2 != test2 || v1 != test1);
 408
 409                 *tsf = v3;
 410                 *tsf <<= 48;
 411                 tmp = v2;
 412                 tmp <<= 32;
 413                 *tsf |= tmp;
 414                 tmp = v1;
 415                 tmp <<= 16;
 416                 *tsf |= tmp;
 417                 *tsf |= v0;
 418         }
 419 }
 420
 421 static void b43_time_lock(struct b43_wldev *dev)
 422 {
 423         u32 macctl;
 424
 425         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 426         macctl |= B43_MACCTL_TBTTHOLD;
 427         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 428         /* Commit the write */
 429         b43_read32(dev, B43_MMIO_MACCTL);
 430 }
 431
 432 static void b43_time_unlock(struct b43_wldev *dev)
 433 {
 434         u32 macctl;
 435
 436         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 437         macctl &= ~B43_MACCTL_TBTTHOLD;
 438         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 439         /* Commit the write */
 440         b43_read32(dev, B43_MMIO_MACCTL);
 441 }
 442
 443 static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
 444 {
 445         /* Be careful with the in-progress timer.
 446          * First zero out the low register, so we have a full
 447          * register-overflow duration to complete the operation.
 448          */
 449         if (dev->dev->id.revision >= 3) {
 450                 u32 lo = (tsf & 0x00000000FFFFFFFFULL);
 451                 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
 452
 453                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
 454                 mmiowb();
 455                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
 456                 mmiowb();
 457                 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
 458         } else {
 459                 u16 v0 = (tsf & 0x000000000000FFFFULL);
 460                 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
 461                 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
 462                 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
 463
 464                 b43_write16(dev, B43_MMIO_TSF_0, 0);
 465                 mmiowb();
 466                 b43_write16(dev, B43_MMIO_TSF_3, v3);
 467                 mmiowb();
 468                 b43_write16(dev, B43_MMIO_TSF_2, v2);
 469                 mmiowb();
 470                 b43_write16(dev, B43_MMIO_TSF_1, v1);
 471                 mmiowb();
 472                 b43_write16(dev, B43_MMIO_TSF_0, v0);
 473         }
 474 }
 475
 476 void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
 477 {
 478         b43_time_lock(dev);
 479         b43_tsf_write_locked(dev, tsf);
 480         b43_time_unlock(dev);
 481 }
 482
 483 static
 484 void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
 485 {
 486         static const u8 zero_addr[ETH_ALEN] = { 0 };
 487         u16 data;
 488
 489         if (!mac)
 490                 mac = zero_addr;
 491
 492         offset |= 0x0020;
 493         b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
 494
 495         data = mac[0];
 496         data |= mac[1] << 8;
 497         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 498         data = mac[2];
 499         data |= mac[3] << 8;
 500         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 501         data = mac[4];
 502         data |= mac[5] << 8;
 503         b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
 504 }
 505
 506 static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
 507 {
 508         const u8 *mac;
 509         const u8 *bssid;
 510         u8 mac_bssid[ETH_ALEN * 2];
 511         int i;
 512         u32 tmp;
 513
 514         bssid = dev->wl->bssid;
 515         mac = dev->wl->mac_addr;
 516
 517         b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
 518
 519         memcpy(mac_bssid, mac, ETH_ALEN);
 520         memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
 521
 522         /* Write our MAC address and BSSID to template ram */
 523         for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
 524                 tmp = (u32) (mac_bssid[i + 0]);
 525                 tmp |= (u32) (mac_bssid[i + 1]) << 8;
 526                 tmp |= (u32) (mac_bssid[i + 2]) << 16;
 527                 tmp |= (u32) (mac_bssid[i + 3]) << 24;
 528                 b43_ram_write(dev, 0x20 + i, tmp);
 529         }
 530 }
 531
 532 static void b43_upload_card_macaddress(struct b43_wldev *dev)
 533 {
 534         b43_write_mac_bssid_templates(dev);
 535         b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
 536 }
 537
 538 static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
 539 {
 540         /* slot_time is in usec. */
 541         if (dev->phy.type != B43_PHYTYPE_G)
 542                 return;
 543         b43_write16(dev, 0x684, 510 + slot_time);
 544         b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
 545 }
 546
 547 static void b43_short_slot_timing_enable(struct b43_wldev *dev)
 548 {
 549         b43_set_slot_time(dev, 9);
 550         dev->short_slot = 1;
 551 }
 552
 553 static void b43_short_slot_timing_disable(struct b43_wldev *dev)
 554 {
 555         b43_set_slot_time(dev, 20);
 556         dev->short_slot = 0;
 557 }
 558
 559 /* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
 560  * Returns the _previously_ enabled IRQ mask.
 561  */
 562 static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
 563 {
 564         u32 old_mask;
 565
 566         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 567         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
 568
 569         return old_mask;
 570 }
 571
 572 /* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
 573  * Returns the _previously_ enabled IRQ mask.
 574  */
 575 static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
 576 {
 577         u32 old_mask;
 578
 579         old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
 580         b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
 581
 582         return old_mask;
 583 }
 584
 585 /* Synchronize IRQ top- and bottom-half.
 586  * IRQs must be masked before calling this.
 587  * This must not be called with the irq_lock held.
 588  */
 589 static void b43_synchronize_irq(struct b43_wldev *dev)
 590 {
 591         synchronize_irq(dev->dev->irq);
 592         tasklet_kill(&dev->isr_tasklet);
 593 }
 594
 595 /* DummyTransmission function, as documented on
 596  * http://bcm-specs.sipsolutions.net/DummyTransmission
 597  */
 598 void b43_dummy_transmission(struct b43_wldev *dev)
 599 {
 600         struct b43_phy *phy = &dev->phy;
 601         unsigned int i, max_loop;
 602         u16 value;
 603         u32 buffer[5] = {
 604                 0x00000000,
 605                 0x00D40000,
 606                 0x00000000,
 607                 0x01000000,
 608                 0x00000000,
 609         };
 610
 611         switch (phy->type) {
 612         case B43_PHYTYPE_A:
 613                 max_loop = 0x1E;
 614                 buffer[0] = 0x000201CC;
 615                 break;
 616         case B43_PHYTYPE_B:
 617         case B43_PHYTYPE_G:
 618                 max_loop = 0xFA;
 619                 buffer[0] = 0x000B846E;
 620                 break;
 621         default:
 622                 B43_WARN_ON(1);
 623                 return;
 624         }
 625
 626         for (i = 0; i < 5; i++)
 627                 b43_ram_write(dev, i * 4, buffer[i]);
 628
 629         /* Commit writes */
 630         b43_read32(dev, B43_MMIO_MACCTL);
 631
 632         b43_write16(dev, 0x0568, 0x0000);
 633         b43_write16(dev, 0x07C0, 0x0000);
 634         value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
 635         b43_write16(dev, 0x050C, value);
 636         b43_write16(dev, 0x0508, 0x0000);
 637         b43_write16(dev, 0x050A, 0x0000);
 638         b43_write16(dev, 0x054C, 0x0000);
 639         b43_write16(dev, 0x056A, 0x0014);
 640         b43_write16(dev, 0x0568, 0x0826);
 641         b43_write16(dev, 0x0500, 0x0000);
 642         b43_write16(dev, 0x0502, 0x0030);
 643
 644         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 645                 b43_radio_write16(dev, 0x0051, 0x0017);
 646         for (i = 0x00; i < max_loop; i++) {
 647                 value = b43_read16(dev, 0x050E);
 648                 if (value & 0x0080)
 649                         break;
 650                 udelay(10);
 651         }
 652         for (i = 0x00; i < 0x0A; i++) {
 653                 value = b43_read16(dev, 0x050E);
 654                 if (value & 0x0400)
 655                         break;
 656                 udelay(10);
 657         }
 658         for (i = 0x00; i < 0x0A; i++) {
 659                 value = b43_read16(dev, 0x0690);
 660                 if (!(value & 0x0100))
 661                         break;
 662                 udelay(10);
 663         }
 664         if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
 665                 b43_radio_write16(dev, 0x0051, 0x0037);
 666 }
 667
 668 static void key_write(struct b43_wldev *dev,
 669                       u8 index, u8 algorithm, const u8 * key)
 670 {
 671         unsigned int i;
 672         u32 offset;
 673         u16 value;
 674         u16 kidx;
 675
 676         /* Key index/algo block */
 677         kidx = b43_kidx_to_fw(dev, index);
 678         value = ((kidx << 4) | algorithm);
 679         b43_shm_write16(dev, B43_SHM_SHARED,
 680                         B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
 681
 682         /* Write the key to the Key Table Pointer offset */
 683         offset = dev->ktp + (index * B43_SEC_KEYSIZE);
 684         for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
 685                 value = key[i];
 686                 value |= (u16) (key[i + 1]) << 8;
 687                 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
 688         }
 689 }
 690
 691 static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
 692 {
 693         u32 addrtmp[2] = { 0, 0, };
 694         u8 per_sta_keys_start = 8;
 695
 696         if (b43_new_kidx_api(dev))
 697                 per_sta_keys_start = 4;
 698
 699         B43_WARN_ON(index < per_sta_keys_start);
 700         /* We have two default TX keys and possibly two default RX keys.
 701          * Physical mac 0 is mapped to physical key 4 or 8, depending
 702          * on the firmware version.
 703          * So we must adjust the index here.
 704          */
 705         index -= per_sta_keys_start;
 706
 707         if (addr) {
 708                 addrtmp[0] = addr[0];
 709                 addrtmp[0] |= ((u32) (addr[1]) << 8);
 710                 addrtmp[0] |= ((u32) (addr[2]) << 16);
 711                 addrtmp[0] |= ((u32) (addr[3]) << 24);
 712                 addrtmp[1] = addr[4];
 713                 addrtmp[1] |= ((u32) (addr[5]) << 8);
 714         }
 715
 716         if (dev->dev->id.revision >= 5) {
 717                 /* Receive match transmitter address mechanism */
 718                 b43_shm_write32(dev, B43_SHM_RCMTA,
 719                                 (index * 2) + 0, addrtmp[0]);
 720                 b43_shm_write16(dev, B43_SHM_RCMTA,
 721                                 (index * 2) + 1, addrtmp[1]);
 722         } else {
 723                 /* RXE (Receive Engine) and
 724                  * PSM (Programmable State Machine) mechanism
 725                  */
 726                 if (index < 8) {
 727                         /* TODO write to RCM 16, 19, 22 and 25 */
 728                 } else {
 729                         b43_shm_write32(dev, B43_SHM_SHARED,
 730                                         B43_SHM_SH_PSM + (index * 6) + 0,
 731                                         addrtmp[0]);
 732                         b43_shm_write16(dev, B43_SHM_SHARED,
 733                                         B43_SHM_SH_PSM + (index * 6) + 4,
 734                                         addrtmp[1]);
 735                 }
 736         }
 737 }
 738
 739 static void do_key_write(struct b43_wldev *dev,
 740                          u8 index, u8 algorithm,
 741                          const u8 * key, size_t key_len, const u8 * mac_addr)
 742 {
 743         u8 buf[B43_SEC_KEYSIZE] = { 0, };
 744         u8 per_sta_keys_start = 8;
 745
 746         if (b43_new_kidx_api(dev))
 747                 per_sta_keys_start = 4;
 748
 749         B43_WARN_ON(index >= dev->max_nr_keys);
 750         B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
 751
 752         if (index >= per_sta_keys_start)
 753                 keymac_write(dev, index, NULL); /* First zero out mac. */
 754         if (key)
 755                 memcpy(buf, key, key_len);
 756         key_write(dev, index, algorithm, buf);
 757         if (index >= per_sta_keys_start)
 758                 keymac_write(dev, index, mac_addr);
 759
 760         dev->key[index].algorithm = algorithm;
 761 }
 762
 763 static int b43_key_write(struct b43_wldev *dev,
 764                          int index, u8 algorithm,
 765                          const u8 * key, size_t key_len,
 766                          const u8 * mac_addr,
 767                          struct ieee80211_key_conf *keyconf)
 768 {
 769         int i;
 770         int sta_keys_start;
 771
 772         if (key_len > B43_SEC_KEYSIZE)
 773                 return -EINVAL;
 774         for (i = 0; i < dev->max_nr_keys; i++) {
 775                 /* Check that we don't already have this key. */
 776                 B43_WARN_ON(dev->key[i].keyconf == keyconf);
 777         }
 778         if (index < 0) {
 779                 /* Either pairwise key or address is 00:00:00:00:00:00
 780                  * for transmit-only keys. Search the index. */
 781                 if (b43_new_kidx_api(dev))
 782                         sta_keys_start = 4;
 783                 else
 784                         sta_keys_start = 8;
 785                 for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
 786                         if (!dev->key[i].keyconf) {
 787                                 /* found empty */
 788                                 index = i;
 789                                 break;
 790                         }
 791                 }
 792                 if (index < 0) {
 793                         b43err(dev->wl, "Out of hardware key memory\n");
 794                         return -ENOSPC;
 795                 }
 796         } else
 797                 B43_WARN_ON(index > 3);
 798
 799         do_key_write(dev, index, algorithm, key, key_len, mac_addr);
 800         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 801                 /* Default RX key */
 802                 B43_WARN_ON(mac_addr);
 803                 do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
 804         }
 805         keyconf->hw_key_idx = index;
 806         dev->key[index].keyconf = keyconf;
 807
 808         return 0;
 809 }
 810
 811 static int b43_key_clear(struct b43_wldev *dev, int index)
 812 {
 813         if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
 814                 return -EINVAL;
 815         do_key_write(dev, index, B43_SEC_ALGO_NONE,
 816                      NULL, B43_SEC_KEYSIZE, NULL);
 817         if ((index <= 3) && !b43_new_kidx_api(dev)) {
 818                 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
 819                              NULL, B43_SEC_KEYSIZE, NULL);
 820         }
 821         dev->key[index].keyconf = NULL;
 822
 823         return 0;
 824 }
 825
 826 static void b43_clear_keys(struct b43_wldev *dev)
 827 {
 828         int i;
 829
 830         for (i = 0; i < dev->max_nr_keys; i++)
 831                 b43_key_clear(dev, i);
 832 }
 833
 834 void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
 835 {
 836         u32 macctl;
 837         u16 ucstat;
 838         bool hwps;
 839         bool awake;
 840         int i;
 841
 842         B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
 843                     (ps_flags & B43_PS_DISABLED));
 844         B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
 845
 846         if (ps_flags & B43_PS_ENABLED) {
 847                 hwps = 1;
 848         } else if (ps_flags & B43_PS_DISABLED) {
 849                 hwps = 0;
 850         } else {
 851                 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
 852                 //      and thus is not an AP and we are associated, set bit 25
 853         }
 854         if (ps_flags & B43_PS_AWAKE) {
 855                 awake = 1;
 856         } else if (ps_flags & B43_PS_ASLEEP) {
 857                 awake = 0;
 858         } else {
 859                 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
 860                 //      or we are associated, or FIXME, or the latest PS-Poll packet sent was
 861                 //      successful, set bit26
 862         }
 863
 864 /* FIXME: For now we force awake-on and hwps-off */
 865         hwps = 0;
 866         awake = 1;
 867
 868         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 869         if (hwps)
 870                 macctl |= B43_MACCTL_HWPS;
 871         else
 872                 macctl &= ~B43_MACCTL_HWPS;
 873         if (awake)
 874                 macctl |= B43_MACCTL_AWAKE;
 875         else
 876                 macctl &= ~B43_MACCTL_AWAKE;
 877         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 878         /* Commit write */
 879         b43_read32(dev, B43_MMIO_MACCTL);
 880         if (awake && dev->dev->id.revision >= 5) {
 881                 /* Wait for the microcode to wake up. */
 882                 for (i = 0; i < 100; i++) {
 883                         ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
 884                                                 B43_SHM_SH_UCODESTAT);
 885                         if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
 886                                 break;
 887                         udelay(10);
 888                 }
 889         }
 890 }
 891
 892 /* Turn the Analog ON/OFF */
 893 static void b43_switch_analog(struct b43_wldev *dev, int on)
 894 {
 895         b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
 896 }
 897
 898 void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
 899 {
 900         u32 tmslow;
 901         u32 macctl;
 902
 903         flags |= B43_TMSLOW_PHYCLKEN;
 904         flags |= B43_TMSLOW_PHYRESET;
 905         ssb_device_enable(dev->dev, flags);
 906         msleep(2);              /* Wait for the PLL to turn on. */
 907
 908         /* Now take the PHY out of Reset again */
 909         tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
 910         tmslow |= SSB_TMSLOW_FGC;
 911         tmslow &= ~B43_TMSLOW_PHYRESET;
 912         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
 913         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
 914         msleep(1);
 915         tmslow &= ~SSB_TMSLOW_FGC;
 916         ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
 917         ssb_read32(dev->dev, SSB_TMSLOW);       /* flush */
 918         msleep(1);
 919
 920         /* Turn Analog ON */
 921         b43_switch_analog(dev, 1);
 922
 923         macctl = b43_read32(dev, B43_MMIO_MACCTL);
 924         macctl &= ~B43_MACCTL_GMODE;
 925         if (flags & B43_TMSLOW_GMODE)
 926                 macctl |= B43_MACCTL_GMODE;
 927         macctl |= B43_MACCTL_IHR_ENABLED;
 928         b43_write32(dev, B43_MMIO_MACCTL, macctl);
 929 }
 930
 931 static void handle_irq_transmit_status(struct b43_wldev *dev)
 932 {
 933         u32 v0, v1;
 934         u16 tmp;
 935         struct b43_txstatus stat;
 936
 937         while (1) {
 938                 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
 939                 if (!(v0 & 0x00000001))
 940                         break;
 941                 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
 942
 943                 stat.cookie = (v0 >> 16);
 944                 stat.seq = (v1 & 0x0000FFFF);
 945                 stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
 946                 tmp = (v0 & 0x0000FFFF);
 947                 stat.frame_count = ((tmp & 0xF000) >> 12);
 948                 stat.rts_count = ((tmp & 0x0F00) >> 8);
 949                 stat.supp_reason = ((tmp & 0x001C) >> 2);
 950                 stat.pm_indicated = !!(tmp & 0x0080);
 951                 stat.intermediate = !!(tmp & 0x0040);
 952                 stat.for_ampdu = !!(tmp & 0x0020);
 953                 stat.acked = !!(tmp & 0x0002);
 954
 955                 b43_handle_txstatus(dev, &stat);
 956         }
 957 }
 958
 959 static void drain_txstatus_queue(struct b43_wldev *dev)
 960 {
 961         u32 dummy;
 962
 963         if (dev->dev->id.revision < 5)
 964                 return;
 965         /* Read all entries from the microcode TXstatus FIFO
 966          * and throw them away.
 967          */
 968         while (1) {
 969                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
 970                 if (!(dummy & 0x00000001))
 971                         break;
 972                 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
 973         }
 974 }
 975
 976 static u32 b43_jssi_read(struct b43_wldev *dev)
 977 {
 978         u32 val = 0;
 979
 980         val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
 981         val <<= 16;
 982         val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
 983
 984         return val;
 985 }
 986
 987 static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
 988 {
 989         b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
 990         b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
 991 }
 992
 993 static void b43_generate_noise_sample(struct b43_wldev *dev)
 994 {
 995         b43_jssi_write(dev, 0x7F7F7F7F);
 996         b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
 997                     b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
 998                     | (1 << 4));
 999         B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
1000 }
1001
1002 static void b43_calculate_link_quality(struct b43_wldev *dev)
1003 {
1004         /* Top half of Link Quality calculation. */
1005
1006         if (dev->noisecalc.calculation_running)
1007                 return;
1008         dev->noisecalc.channel_at_start = dev->phy.channel;
1009         dev->noisecalc.calculation_running = 1;
1010         dev->noisecalc.nr_samples = 0;
1011
1012         b43_generate_noise_sample(dev);
1013 }
1014
1015 static void handle_irq_noise(struct b43_wldev *dev)
1016 {
1017         struct b43_phy *phy = &dev->phy;
1018         u16 tmp;
1019         u8 noise[4];
1020         u8 i, j;
1021         s32 average;
1022
1023         /* Bottom half of Link Quality calculation. */
1024
1025         B43_WARN_ON(!dev->noisecalc.calculation_running);
1026         if (dev->noisecalc.channel_at_start != phy->channel)
1027                 goto drop_calculation;
1028         *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
1029         if (noise[0] == 0x7F || noise[1] == 0x7F ||
1030             noise[2] == 0x7F || noise[3] == 0x7F)
1031                 goto generate_new;
1032
1033         /* Get the noise samples. */
1034         B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
1035         i = dev->noisecalc.nr_samples;
1036         noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1037         noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1038         noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1039         noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
1040         dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
1041         dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
1042         dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
1043         dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
1044         dev->noisecalc.nr_samples++;
1045         if (dev->noisecalc.nr_samples == 8) {
1046                 /* Calculate the Link Quality by the noise samples. */
1047                 average = 0;
1048                 for (i = 0; i < 8; i++) {
1049                         for (j = 0; j < 4; j++)
1050                                 average += dev->noisecalc.samples[i][j];
1051                 }
1052                 average /= (8 * 4);
1053                 average *= 125;
1054                 average += 64;
1055                 average /= 128;
1056                 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
1057                 tmp = (tmp / 128) & 0x1F;
1058                 if (tmp >= 8)
1059                         average += 2;
1060                 else
1061                         average -= 25;
1062                 if (tmp == 8)
1063                         average -= 72;
1064                 else
1065                         average -= 48;
1066
1067                 dev->stats.link_noise = average;
1068               drop_calculation:
1069                 dev->noisecalc.calculation_running = 0;
1070                 return;
1071         }
1072       generate_new:
1073         b43_generate_noise_sample(dev);
1074 }
1075
1076 static void handle_irq_tbtt_indication(struct b43_wldev *dev)
1077 {
1078         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
1079                 ///TODO: PS TBTT
1080         } else {
1081                 if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
1082                         b43_power_saving_ctl_bits(dev, 0);
1083         }
1084         dev->reg124_set_0x4 = 0;
1085         if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
1086                 dev->reg124_set_0x4 = 1;
1087 }
1088
1089 static void handle_irq_atim_end(struct b43_wldev *dev)
1090 {
1091         if (!dev->reg124_set_0x4 /*FIXME rename this variable */ )
1092                 return;
1093         b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
1094                     b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
1095                     | 0x4);
1096 }
1097
1098 static void handle_irq_pmq(struct b43_wldev *dev)
1099 {
1100         u32 tmp;
1101
1102         //TODO: AP mode.
1103
1104         while (1) {
1105                 tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
1106                 if (!(tmp & 0x00000008))
1107                         break;
1108         }
1109         /* 16bit write is odd, but correct. */
1110         b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
1111 }
1112
1113 static void b43_write_template_common(struct b43_wldev *dev,
1114                                       const u8 * data, u16 size,
1115                                       u16 ram_offset,
1116                                       u16 shm_size_offset, u8 rate)
1117 {
1118         u32 i, tmp;
1119         struct b43_plcp_hdr4 plcp;
1120
1121         plcp.data = 0;
1122         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1123         b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
1124         ram_offset += sizeof(u32);
1125         /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
1126          * So leave the first two bytes of the next write blank.
1127          */
1128         tmp = (u32) (data[0]) << 16;
1129         tmp |= (u32) (data[1]) << 24;
1130         b43_ram_write(dev, ram_offset, tmp);
1131         ram_offset += sizeof(u32);
1132         for (i = 2; i < size; i += sizeof(u32)) {
1133                 tmp = (u32) (data[i + 0]);
1134                 if (i + 1 < size)
1135                         tmp |= (u32) (data[i + 1]) << 8;
1136                 if (i + 2 < size)
1137                         tmp |= (u32) (data[i + 2]) << 16;
1138                 if (i + 3 < size)
1139                         tmp |= (u32) (data[i + 3]) << 24;
1140                 b43_ram_write(dev, ram_offset + i - 2, tmp);
1141         }
1142         b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
1143                         size + sizeof(struct b43_plcp_hdr6));
1144 }
1145
1146 static void b43_write_beacon_template(struct b43_wldev *dev,
1147                                       u16 ram_offset,
1148                                       u16 shm_size_offset, u8 rate)
1149 {
1150         int len;
1151         const u8 *data;
1152
1153         B43_WARN_ON(!dev->cached_beacon);
1154         len = min((size_t) dev->cached_beacon->len,
1155                   0x200 - sizeof(struct b43_plcp_hdr6));
1156         data = (const u8 *)(dev->cached_beacon->data);
1157         b43_write_template_common(dev, data,
1158                                   len, ram_offset, shm_size_offset, rate);
1159 }
1160
1161 static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
1162                                       u16 shm_offset, u16 size, u8 rate)
1163 {
1164         struct b43_plcp_hdr4 plcp;
1165         u32 tmp;
1166         __le16 dur;
1167
1168         plcp.data = 0;
1169         b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
1170         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1171                                                dev->wl->if_id, size,
1172                                                B43_RATE_TO_BASE100KBPS(rate));
1173         /* Write PLCP in two parts and timing for packet transfer */
1174         tmp = le32_to_cpu(plcp.data);
1175         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
1176         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
1177         b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
1178 }
1179
1180 /* Instead of using custom probe response template, this function
1181  * just patches custom beacon template by:
1182  * 1) Changing packet type
1183  * 2) Patching duration field
1184  * 3) Stripping TIM
1185  */
1186 static u8 *b43_generate_probe_resp(struct b43_wldev *dev,
1187                                    u16 * dest_size, u8 rate)
1188 {
1189         const u8 *src_data;
1190         u8 *dest_data;
1191         u16 src_size, elem_size, src_pos, dest_pos;
1192         __le16 dur;
1193         struct ieee80211_hdr *hdr;
1194
1195         B43_WARN_ON(!dev->cached_beacon);
1196         src_size = dev->cached_beacon->len;
1197         src_data = (const u8 *)dev->cached_beacon->data;
1198
1199         if (unlikely(src_size < 0x24)) {
1200                 b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n");
1201                 return NULL;
1202         }
1203
1204         dest_data = kmalloc(src_size, GFP_ATOMIC);
1205         if (unlikely(!dest_data))
1206                 return NULL;
1207
1208         /* 0x24 is offset of first variable-len Information-Element
1209          * in beacon frame.
1210          */
1211         memcpy(dest_data, src_data, 0x24);
1212         src_pos = dest_pos = 0x24;
1213         for (; src_pos < src_size - 2; src_pos += elem_size) {
1214                 elem_size = src_data[src_pos + 1] + 2;
1215                 if (src_data[src_pos] != 0x05) {        /* TIM */
1216                         memcpy(dest_data + dest_pos, src_data + src_pos,
1217                                elem_size);
1218                         dest_pos += elem_size;
1219                 }
1220         }
1221         *dest_size = dest_pos;
1222         hdr = (struct ieee80211_hdr *)dest_data;
1223
1224         /* Set the frame control. */
1225         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1226                                          IEEE80211_STYPE_PROBE_RESP);
1227         dur = ieee80211_generic_frame_duration(dev->wl->hw,
1228                                                dev->wl->if_id, *dest_size,
1229                                                B43_RATE_TO_BASE100KBPS(rate));
1230         hdr->duration_id = dur;
1231
1232         return dest_data;
1233 }
1234
1235 static void b43_write_probe_resp_template(struct b43_wldev *dev,
1236                                           u16 ram_offset,
1237                                           u16 shm_size_offset, u8 rate)
1238 {
1239         u8 *probe_resp_data;
1240         u16 size;
1241
1242         B43_WARN_ON(!dev->cached_beacon);
1243         size = dev->cached_beacon->len;
1244         probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
1245         if (unlikely(!probe_resp_data))
1246                 return;
1247
1248         /* Looks like PLCP headers plus packet timings are stored for
1249          * all possible basic rates
1250          */
1251         b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB);
1252         b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB);
1253         b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB);
1254         b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB);
1255
1256         size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
1257         b43_write_template_common(dev, probe_resp_data,
1258                                   size, ram_offset, shm_size_offset, rate);
1259         kfree(probe_resp_data);
1260 }
1261
1262 static int b43_refresh_cached_beacon(struct b43_wldev *dev,
1263                                      struct sk_buff *beacon)
1264 {
1265         if (dev->cached_beacon)
1266                 kfree_skb(dev->cached_beacon);
1267         dev->cached_beacon = beacon;
1268
1269         return 0;
1270 }
1271
1272 static void b43_update_templates(struct b43_wldev *dev)
1273 {
1274         u32 status;
1275
1276         B43_WARN_ON(!dev->cached_beacon);
1277
1278         b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1279         b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1280         b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB);
1281
1282         status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1283         status |= 0x03;
1284         b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1285 }
1286
1287 static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon)
1288 {
1289         int err;
1290
1291         err = b43_refresh_cached_beacon(dev, beacon);
1292         if (unlikely(err))
1293                 return;
1294         b43_update_templates(dev);
1295 }
1296
1297 static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
1298 {
1299         u32 tmp;
1300         u16 i, len;
1301
1302         len = min((u16) ssid_len, (u16) 0x100);
1303         for (i = 0; i < len; i += sizeof(u32)) {
1304                 tmp = (u32) (ssid[i + 0]);
1305                 if (i + 1 < len)
1306                         tmp |= (u32) (ssid[i + 1]) << 8;
1307                 if (i + 2 < len)
1308                         tmp |= (u32) (ssid[i + 2]) << 16;
1309                 if (i + 3 < len)
1310                         tmp |= (u32) (ssid[i + 3]) << 24;
1311                 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
1312         }
1313         b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
1314 }
1315
1316 static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
1317 {
1318         b43_time_lock(dev);
1319         if (dev->dev->id.revision >= 3) {
1320                 b43_write32(dev, 0x188, (beacon_int << 16));
1321         } else {
1322                 b43_write16(dev, 0x606, (beacon_int >> 6));
1323                 b43_write16(dev, 0x610, beacon_int);
1324         }
1325         b43_time_unlock(dev);
1326 }
1327
1328 static void handle_irq_beacon(struct b43_wldev *dev)
1329 {
1330         u32 status;
1331
1332         if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP))
1333                 return;
1334
1335         dev->irq_savedstate &= ~B43_IRQ_BEACON;
1336         status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
1337
1338         if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) {
1339                 /* ACK beacon IRQ. */
1340                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
1341                 dev->irq_savedstate |= B43_IRQ_BEACON;
1342                 if (dev->cached_beacon)
1343                         kfree_skb(dev->cached_beacon);
1344                 dev->cached_beacon = NULL;
1345                 return;
1346         }
1347         if (!(status & 0x1)) {
1348                 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
1349                 status |= 0x1;
1350                 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1351         }
1352         if (!(status & 0x2)) {
1353                 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
1354                 status |= 0x2;
1355                 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
1356         }
1357 }
1358
1359 static void handle_irq_ucode_debug(struct b43_wldev *dev)
1360 {
1361         //TODO
1362 }
1363
1364 /* Interrupt handler bottom-half */
1365 static void b43_interrupt_tasklet(struct b43_wldev *dev)
1366 {
1367         u32 reason;
1368         u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
1369         u32 merged_dma_reason = 0;
1370         int i;
1371         unsigned long flags;
1372
1373         spin_lock_irqsave(&dev->wl->irq_lock, flags);
1374
1375         B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
1376
1377         reason = dev->irq_reason;
1378         for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
1379                 dma_reason[i] = dev->dma_reason[i];
1380                 merged_dma_reason |= dma_reason[i];
1381         }
1382
1383         if (unlikely(reason & B43_IRQ_MAC_TXERR))
1384                 b43err(dev->wl, "MAC transmission error\n");
1385
1386         if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
1387                 b43err(dev->wl, "PHY transmission error\n");
1388                 rmb();
1389                 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
1390                         atomic_set(&dev->phy.txerr_cnt,
1391                                    B43_PHY_TX_BADNESS_LIMIT);
1392                         b43err(dev->wl, "Too many PHY TX errors, "
1393                                         "restarting the controller\n");
1394                         b43_controller_restart(dev, "PHY TX errors");
1395                 }
1396         }
1397
1398         if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
1399                                           B43_DMAIRQ_NONFATALMASK))) {
1400                 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
1401                         b43err(dev->wl, "Fatal DMA error: "
1402                                "0x%08X, 0x%08X, 0x%08X, "
1403                                "0x%08X, 0x%08X, 0x%08X\n",
1404                                dma_reason[0], dma_reason[1],
1405                                dma_reason[2], dma_reason[3],
1406                                dma_reason[4], dma_reason[5]);
1407                         b43_controller_restart(dev, "DMA error");
1408                         mmiowb();
1409                         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1410                         return;
1411                 }
1412                 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
1413                         b43err(dev->wl, "DMA error: "
1414                                "0x%08X, 0x%08X, 0x%08X, "
1415                                "0x%08X, 0x%08X, 0x%08X\n",
1416                                dma_reason[0], dma_reason[1],
1417                                dma_reason[2], dma_reason[3],
1418                                dma_reason[4], dma_reason[5]);
1419                 }
1420         }
1421
1422         if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
1423                 handle_irq_ucode_debug(dev);
1424         if (reason & B43_IRQ_TBTT_INDI)
1425                 handle_irq_tbtt_indication(dev);
1426         if (reason & B43_IRQ_ATIM_END)
1427                 handle_irq_atim_end(dev);
1428         if (reason & B43_IRQ_BEACON)
1429                 handle_irq_beacon(dev);
1430         if (reason & B43_IRQ_PMQ)
1431                 handle_irq_pmq(dev);
1432         if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
1433                 ;/* TODO */
1434         if (reason & B43_IRQ_NOISESAMPLE_OK)
1435                 handle_irq_noise(dev);
1436
1437         /* Check the DMA reason registers for received data. */
1438         if (dma_reason[0] & B43_DMAIRQ_RX_DONE)
1439                 b43_dma_rx(dev->dma.rx_ring0);
1440         if (dma_reason[3] & B43_DMAIRQ_RX_DONE)
1441                 b43_dma_rx(dev->dma.rx_ring3);
1442         B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
1443         B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
1444         B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
1445         B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
1446
1447         if (reason & B43_IRQ_TX_OK)
1448                 handle_irq_transmit_status(dev);
1449
1450         b43_interrupt_enable(dev, dev->irq_savedstate);
1451         mmiowb();
1452         spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
1453 }
1454
1455 static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
1456 {
1457         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
1458
1459         b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
1460         b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
1461         b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
1462         b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
1463         b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
1464         b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
1465 }
1466
1467 /* Interrupt handler top-half */
1468 static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
1469 {
1470         irqreturn_t ret = IRQ_NONE;
1471         struct b43_wldev *dev = dev_id;
1472         u32 reason;
1473
1474         if (!dev)
1475                 return IRQ_NONE;
1476
1477         spin_lock(&dev->wl->irq_lock);
1478
1479         if (b43_status(dev) < B43_STAT_STARTED)
1480                 goto out;
1481         reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1482         if (reason == 0xffffffff)       /* shared IRQ */
1483                 goto out;
1484         ret = IRQ_HANDLED;
1485         reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
1486         if (!reason)
1487                 goto out;
1488
1489         dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
1490             & 0x0001DC00;
1491         dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
1492             & 0x0000DC00;
1493         dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
1494             & 0x0000DC00;
1495         dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
1496             & 0x0001DC00;
1497         dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
1498             & 0x0000DC00;
1499         dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
1500             & 0x0000DC00;
1501
1502         b43_interrupt_ack(dev, reason);
1503         /* disable all IRQs. They are enabled again in the bottom half. */
1504         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
1505         /* save the reason code and call our bottom half. */
1506         dev->irq_reason = reason;
1507         tasklet_schedule(&dev->isr_tasklet);
1508       out:
1509         mmiowb();
1510         spin_unlock(&dev->wl->irq_lock);
1511
1512         return ret;
1513 }
1514
1515 static void b43_release_firmware(struct b43_wldev *dev)
1516 {
1517         release_firmware(dev->fw.ucode);
1518         dev->fw.ucode = NULL;
1519         release_firmware(dev->fw.pcm);
1520         dev->fw.pcm = NULL;
1521         release_firmware(dev->fw.initvals);
1522         dev->fw.initvals = NULL;
1523         release_firmware(dev->fw.initvals_band);
1524         dev->fw.initvals_band = NULL;
1525 }
1526
1527 static void b43_print_fw_helptext(struct b43_wl *wl)
1528 {
1529         b43err(wl, "You must go to "
1530                "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
1531                "and download the correct firmware (version 4).\n");
1532 }
1533
1534 static int do_request_fw(struct b43_wldev *dev,
1535                          const char *name,
1536                          const struct firmware **fw)
1537 {
1538         char path[sizeof(modparam_fwpostfix) + 32];
1539         struct b43_fw_header *hdr;
1540         u32 size;
1541         int err;
1542
1543         if (!name)
1544                 return 0;
1545
1546         snprintf(path, ARRAY_SIZE(path),
1547                  "b43%s/%s.fw",
1548                  modparam_fwpostfix, name);
1549         err = request_firmware(fw, path, dev->dev->dev);
1550         if (err) {
1551                 b43err(dev->wl, "Firmware file \"%s\" not found "
1552                        "or load failed.\n", path);
1553                 return err;
1554         }
1555         if ((*fw)->size < sizeof(struct b43_fw_header))
1556                 goto err_format;
1557         hdr = (struct b43_fw_header *)((*fw)->data);
1558         switch (hdr->type) {
1559         case B43_FW_TYPE_UCODE:
1560         case B43_FW_TYPE_PCM:
1561                 size = be32_to_cpu(hdr->size);
1562                 if (size != (*fw)->size - sizeof(struct b43_fw_header))
1563                         goto err_format;
1564                 /* fallthrough */
1565         case B43_FW_TYPE_IV:
1566                 if (hdr->ver != 1)
1567                         goto err_format;
1568                 break;
1569         default:
1570                 goto err_format;
1571         }
1572
1573         return err;
1574
1575 err_format:
1576         b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
1577         return -EPROTO;
1578 }
1579
1580 static int b43_request_firmware(struct b43_wldev *dev)
1581 {
1582         struct b43_firmware *fw = &dev->fw;
1583         const u8 rev = dev->dev->id.revision;
1584         const char *filename;
1585         u32 tmshigh;
1586         int err;
1587
1588         tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
1589         if (!fw->ucode) {
1590                 if ((rev >= 5) && (rev <= 10))
1591                         filename = "ucode5";
1592                 else if ((rev >= 11) && (rev <= 12))
1593                         filename = "ucode11";
1594                 else if (rev >= 13)
1595                         filename = "ucode13";
1596                 else
1597                         goto err_no_ucode;
1598                 err = do_request_fw(dev, filename, &fw->ucode);
1599                 if (err)
1600                         goto err_load;
1601         }
1602         if (!fw->pcm) {
1603                 if ((rev >= 5) && (rev <= 10))
1604                         filename = "pcm5";
1605                 else if (rev >= 11)
1606                         filename = NULL;
1607                 else
1608                         goto err_no_pcm;
1609                 err = do_request_fw(dev, filename, &fw->pcm);
1610                 if (err)
1611                         goto err_load;
1612         }
1613         if (!fw->initvals) {
1614                 switch (dev->phy.type) {
1615                 case B43_PHYTYPE_A:
1616                         if ((rev >= 5) && (rev <= 10)) {
1617                                 if (tmshigh & B43_TMSHIGH_GPHY)
1618                                         filename = "a0g1initvals5";
1619                                 else
1620                                         filename = "a0g0initvals5";
1621                         } else
1622                                 goto err_no_initvals;
1623                         break;
1624                 case B43_PHYTYPE_G:
1625                         if ((rev >= 5) && (rev <= 10))
1626                                 filename = "b0g0initvals5";
1627                         else if (rev >= 13)
1628                                 filename = "lp0initvals13";
1629                         else
1630                                 goto err_no_initvals;
1631                         break;
1632                 default:
1633                         goto err_no_initvals;
1634                 }
1635                 err = do_request_fw(dev, filename, &fw->initvals);
1636                 if (err)
1637                         goto err_load;
1638         }
1639         if (!fw->initvals_band) {
1640                 switch (dev->phy.type) {
1641                 case B43_PHYTYPE_A:
1642                         if ((rev >= 5) && (rev <= 10)) {
1643                                 if (tmshigh & B43_TMSHIGH_GPHY)
1644                                         filename = "a0g1bsinitvals5";
1645                                 else
1646                                         filename = "a0g0bsinitvals5";
1647                         } else if (rev >= 11)
1648                                 filename = NULL;
1649                         else
1650                                 goto err_no_initvals;
1651                         break;
1652                 case B43_PHYTYPE_G:
1653                         if ((rev >= 5) && (rev <= 10))
1654                                 filename = "b0g0bsinitvals5";
1655                         else if (rev >= 11)
1656                                 filename = NULL;
1657                         else
1658                                 goto err_no_initvals;
1659                         break;
1660                 default:
1661                         goto err_no_initvals;
1662                 }
1663                 err = do_request_fw(dev, filename, &fw->initvals_band);
1664                 if (err)
1665                         goto err_load;
1666         }
1667
1668         return 0;
1669
1670 err_load:
1671         b43_print_fw_helptext(dev->wl);
1672         goto error;
1673
1674 err_no_ucode:
1675         err = -ENODEV;
1676         b43err(dev->wl, "No microcode available for core rev %u\n", rev);
1677         goto error;
1678
1679 err_no_pcm:
1680         err = -ENODEV;
1681         b43err(dev->wl, "No PCM available for core rev %u\n", rev);
1682         goto error;
1683
1684 err_no_initvals:
1685         err = -ENODEV;
1686         b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
1687                "core rev %u\n", dev->phy.type, rev);
1688         goto error;
1689
1690 error:
1691         b43_release_firmware(dev);
1692         return err;
1693 }
1694
1695 static int b43_upload_microcode(struct b43_wldev *dev)
1696 {
1697         const size_t hdr_len = sizeof(struct b43_fw_header);
1698         const __be32 *data;
1699         unsigned int i, len;
1700         u16 fwrev, fwpatch, fwdate, fwtime;
1701         u32 tmp;
1702         int err = 0;
1703
1704         /* Upload Microcode. */
1705         data = (__be32 *) (dev->fw.ucode->data + hdr_len);
1706         len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
1707         b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
1708         for (i = 0; i < len; i++) {
1709                 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1710                 udelay(10);
1711         }
1712
1713         if (dev->fw.pcm) {
1714                 /* Upload PCM data. */
1715                 data = (__be32 *) (dev->fw.pcm->data + hdr_len);
1716                 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
1717                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
1718                 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
1719                 /* No need for autoinc bit in SHM_HW */
1720                 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
1721                 for (i = 0; i < len; i++) {
1722                         b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
1723                         udelay(10);
1724                 }
1725         }
1726
1727         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
1728         b43_write32(dev, B43_MMIO_MACCTL,
1729                     B43_MACCTL_PSM_RUN |
1730                     B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA);
1731
1732         /* Wait for the microcode to load and respond */
1733         i = 0;
1734         while (1) {
1735                 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1736                 if (tmp == B43_IRQ_MAC_SUSPENDED)
1737                         break;
1738                 i++;
1739                 if (i >= 50) {
1740                         b43err(dev->wl, "Microcode not responding\n");
1741                         b43_print_fw_helptext(dev->wl);
1742                         err = -ENODEV;
1743                         goto out;
1744                 }
1745                 udelay(10);
1746         }
1747         b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);       /* dummy read */
1748
1749         /* Get and check the revisions. */
1750         fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
1751         fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
1752         fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
1753         fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
1754
1755         if (fwrev <= 0x128) {
1756                 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
1757                        "binary drivers older than version 4.x is unsupported. "
1758                        "You must upgrade your firmware files.\n");
1759                 b43_print_fw_helptext(dev->wl);
1760                 b43_write32(dev, B43_MMIO_MACCTL, 0);
1761                 err = -EOPNOTSUPP;
1762                 goto out;
1763         }
1764         b43dbg(dev->wl, "Loading firmware version %u.%u "
1765                "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
1766                fwrev, fwpatch,
1767                (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
1768                (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
1769
1770         dev->fw.rev = fwrev;
1771         dev->fw.patch = fwpatch;
1772
1773       out:
1774         return err;
1775 }
1776
1777 static int b43_write_initvals(struct b43_wldev *dev,
1778                               const struct b43_iv *ivals,
1779                               size_t count,
1780                               size_t array_size)
1781 {
1782         const struct b43_iv *iv;
1783         u16 offset;
1784         size_t i;
1785         bool bit32;
1786
1787         BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
1788         iv = ivals;
1789         for (i = 0; i < count; i++) {
1790                 if (array_size < sizeof(iv->offset_size))
1791                         goto err_format;
1792                 array_size -= sizeof(iv->offset_size);
1793                 offset = be16_to_cpu(iv->offset_size);
1794                 bit32 = !!(offset & B43_IV_32BIT);
1795                 offset &= B43_IV_OFFSET_MASK;
1796                 if (offset >= 0x1000)
1797                         goto err_format;
1798                 if (bit32) {
1799                         u32 value;
1800
1801                         if (array_size < sizeof(iv->data.d32))
1802                                 goto err_format;
1803                         array_size -= sizeof(iv->data.d32);
1804
1805                         value = be32_to_cpu(get_unaligned(&iv->data.d32));
1806                         b43_write32(dev, offset, value);
1807
1808                         iv = (const struct b43_iv *)((const uint8_t *)iv +
1809                                                         sizeof(__be16) +
1810                                                         sizeof(__be32));
1811                 } else {
1812                         u16 value;
1813
1814                         if (array_size < sizeof(iv->data.d16))
1815                                 goto err_format;
1816                         array_size -= sizeof(iv->data.d16);
1817
1818                         value = be16_to_cpu(iv->data.d16);
1819                         b43_write16(dev, offset, value);
1820
1821                         iv = (const struct b43_iv *)((const uint8_t *)iv +
1822                                                         sizeof(__be16) +
1823                                                         sizeof(__be16));
1824                 }
1825         }
1826         if (array_size)
1827                 goto err_format;
1828
1829         return 0;
1830
1831 err_format:
1832         b43err(dev->wl, "Initial Values Firmware file-format error.\n");
1833         b43_print_fw_helptext(dev->wl);
1834
1835         return -EPROTO;
1836 }
1837
1838 static int b43_upload_initvals(struct b43_wldev *dev)
1839 {
1840         const size_t hdr_len = sizeof(struct b43_fw_header);
1841         const struct b43_fw_header *hdr;
1842         struct b43_firmware *fw = &dev->fw;
1843         const struct b43_iv *ivals;
1844         size_t count;
1845         int err;
1846
1847         hdr = (const struct b43_fw_header *)(fw->initvals->data);
1848         ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len);
1849         count = be32_to_cpu(hdr->size);
1850         err = b43_write_initvals(dev, ivals, count,
1851                                  fw->initvals->size - hdr_len);
1852         if (err)
1853                 goto out;
1854         if (fw->initvals_band) {
1855                 hdr = (const struct b43_fw_header *)(fw->initvals_band->data);
1856                 ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len);
1857                 count = be32_to_cpu(hdr->size);
1858                 err = b43_write_initvals(dev, ivals, count,
1859                                          fw->initvals_band->size - hdr_len);
1860                 if (err)
1861                         goto out;
1862         }
1863 out:
1864
1865         return err;
1866 }
1867
1868 /* Initialize the GPIOs
1869  * http://bcm-specs.sipsolutions.net/GPIO
1870  */
1871 static int b43_gpio_init(struct b43_wldev *dev)
1872 {
1873         struct ssb_bus *bus = dev->dev->bus;
1874         struct ssb_device *gpiodev, *pcidev = NULL;
1875         u32 mask, set;
1876
1877         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
1878                     & ~B43_MACCTL_GPOUTSMSK);
1879
1880         b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
1881                     | 0x000F);
1882
1883         mask = 0x0000001F;
1884         set = 0x0000000F;
1885         if (dev->dev->bus->chip_id == 0x4301) {
1886                 mask |= 0x0060;
1887                 set |= 0x0060;
1888         }
1889         if (0 /* FIXME: conditional unknown */ ) {
1890                 b43_write16(dev, B43_MMIO_GPIO_MASK,
1891                             b43_read16(dev, B43_MMIO_GPIO_MASK)
1892                             | 0x0100);
1893                 mask |= 0x0180;
1894                 set |= 0x0180;
1895         }
1896         if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
1897                 b43_write16(dev, B43_MMIO_GPIO_MASK,
1898                             b43_read16(dev, B43_MMIO_GPIO_MASK)
1899                             | 0x0200);
1900                 mask |= 0x0200;
1901                 set |= 0x0200;
1902         }
1903         if (dev->dev->id.revision >= 2)
1904                 mask |= 0x0010; /* FIXME: This is redundant. */
1905
1906 #ifdef CONFIG_SSB_DRIVER_PCICORE
1907         pcidev = bus->pcicore.dev;
1908 #endif
1909         gpiodev = bus->chipco.dev ? : pcidev;
1910         if (!gpiodev)
1911                 return 0;
1912         ssb_write32(gpiodev, B43_GPIO_CONTROL,
1913                     (ssb_read32(gpiodev, B43_GPIO_CONTROL)
1914                      & mask) | set);
1915
1916         return 0;
1917 }
1918
1919 /* Turn off all GPIO stuff. Call this on module unload, for example. */
1920 static void b43_gpio_cleanup(struct b43_wldev *dev)
1921 {
1922         struct ssb_bus *bus = dev->dev->bus;
1923         struct ssb_device *gpiodev, *pcidev = NULL;
1924
1925 #ifdef CONFIG_SSB_DRIVER_PCICORE
1926         pcidev = bus->pcicore.dev;
1927 #endif
1928         gpiodev = bus->chipco.dev ? : pcidev;
1929         if (!gpiodev)
1930                 return;
1931         ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
1932 }
1933
1934 /* http://bcm-specs.sipsolutions.net/EnableMac */
1935 void b43_mac_enable(struct b43_wldev *dev)
1936 {
1937         dev->mac_suspended--;
1938         B43_WARN_ON(dev->mac_suspended < 0);
1939         B43_WARN_ON(irqs_disabled());
1940         if (dev->mac_suspended == 0) {
1941                 b43_write32(dev, B43_MMIO_MACCTL,
1942                             b43_read32(dev, B43_MMIO_MACCTL)
1943                             | B43_MACCTL_ENABLED);
1944                 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
1945                             B43_IRQ_MAC_SUSPENDED);
1946                 /* Commit writes */
1947                 b43_read32(dev, B43_MMIO_MACCTL);
1948                 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1949                 b43_power_saving_ctl_bits(dev, 0);
1950
1951                 /* Re-enable IRQs. */
1952                 spin_lock_irq(&dev->wl->irq_lock);
1953                 b43_interrupt_enable(dev, dev->irq_savedstate);
1954                 spin_unlock_irq(&dev->wl->irq_lock);
1955         }
1956 }
1957
1958 /* http://bcm-specs.sipsolutions.net/SuspendMAC */
1959 void b43_mac_suspend(struct b43_wldev *dev)
1960 {
1961         int i;
1962         u32 tmp;
1963
1964         might_sleep();
1965         B43_WARN_ON(irqs_disabled());
1966         B43_WARN_ON(dev->mac_suspended < 0);
1967
1968         if (dev->mac_suspended == 0) {
1969                 /* Mask IRQs before suspending MAC. Otherwise
1970                  * the MAC stays busy and won't suspend. */
1971                 spin_lock_irq(&dev->wl->irq_lock);
1972                 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
1973                 spin_unlock_irq(&dev->wl->irq_lock);
1974                 b43_synchronize_irq(dev);
1975                 dev->irq_savedstate = tmp;
1976
1977                 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
1978                 b43_write32(dev, B43_MMIO_MACCTL,
1979                             b43_read32(dev, B43_MMIO_MACCTL)
1980                             & ~B43_MACCTL_ENABLED);
1981                 /* force pci to flush the write */
1982                 b43_read32(dev, B43_MMIO_MACCTL);
1983                 for (i = 40; i; i--) {
1984                         tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
1985                         if (tmp & B43_IRQ_MAC_SUSPENDED)
1986                                 goto out;
1987                         msleep(1);
1988                 }
1989                 b43err(dev->wl, "MAC suspend failed\n");
1990         }
1991 out:
1992         dev->mac_suspended++;
1993 }
1994
1995 static void b43_adjust_opmode(struct b43_wldev *dev)
1996 {
1997         struct b43_wl *wl = dev->wl;
1998         u32 ctl;
1999         u16 cfp_pretbtt;
2000
2001         ctl = b43_read32(dev, B43_MMIO_MACCTL);
2002         /* Reset status to STA infrastructure mode. */
2003         ctl &= ~B43_MACCTL_AP;
2004         ctl &= ~B43_MACCTL_KEEP_CTL;
2005         ctl &= ~B43_MACCTL_KEEP_BADPLCP;
2006         ctl &= ~B43_MACCTL_KEEP_BAD;
2007         ctl &= ~B43_MACCTL_PROMISC;
2008         ctl &= ~B43_MACCTL_BEACPROMISC;
2009         ctl |= B43_MACCTL_INFRA;
2010
2011         if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2012                 ctl |= B43_MACCTL_AP;
2013         else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
2014                 ctl &= ~B43_MACCTL_INFRA;
2015
2016         if (wl->filter_flags & FIF_CONTROL)
2017                 ctl |= B43_MACCTL_KEEP_CTL;
2018         if (wl->filter_flags & FIF_FCSFAIL)
2019                 ctl |= B43_MACCTL_KEEP_BAD;
2020         if (wl->filter_flags & FIF_PLCPFAIL)
2021                 ctl |= B43_MACCTL_KEEP_BADPLCP;
2022         if (wl->filter_flags & FIF_PROMISC_IN_BSS)
2023                 ctl |= B43_MACCTL_PROMISC;
2024         if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
2025                 ctl |= B43_MACCTL_BEACPROMISC;
2026
2027         /* Workaround: On old hardware the HW-MAC-address-filter
2028          * doesn't work properly, so always run promisc in filter
2029          * it in software. */
2030         if (dev->dev->id.revision <= 4)
2031                 ctl |= B43_MACCTL_PROMISC;
2032
2033         b43_write32(dev, B43_MMIO_MACCTL, ctl);
2034
2035         cfp_pretbtt = 2;
2036         if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
2037                 if (dev->dev->bus->chip_id == 0x4306 &&
2038                     dev->dev->bus->chip_rev == 3)
2039                         cfp_pretbtt = 100;
2040                 else
2041                         cfp_pretbtt = 50;
2042         }
2043         b43_write16(dev, 0x612, cfp_pretbtt);
2044 }
2045
2046 static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
2047 {
2048         u16 offset;
2049
2050         if (is_ofdm) {
2051                 offset = 0x480;
2052                 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
2053         } else {
2054                 offset = 0x4C0;
2055                 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
2056         }
2057         b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
2058                         b43_shm_read16(dev, B43_SHM_SHARED, offset));
2059 }
2060
2061 static void b43_rate_memory_init(struct b43_wldev *dev)
2062 {
2063         switch (dev->phy.type) {
2064         case B43_PHYTYPE_A:
2065         case B43_PHYTYPE_G:
2066                 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
2067                 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
2068                 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
2069                 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
2070                 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
2071                 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
2072                 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
2073                 if (dev->phy.type == B43_PHYTYPE_A)
2074                         break;
2075                 /* fallthrough */
2076         case B43_PHYTYPE_B:
2077                 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
2078                 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
2079                 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
2080                 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
2081                 break;
2082         default:
2083                 B43_WARN_ON(1);
2084         }
2085 }
2086
2087 /* Set the TX-Antenna for management frames sent by firmware. */
2088 static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
2089 {
2090         u16 ant = 0;
2091         u16 tmp;
2092
2093         switch (antenna) {
2094         case B43_ANTENNA0:
2095                 ant |= B43_TX4_PHY_ANT0;
2096                 break;
2097         case B43_ANTENNA1:
2098                 ant |= B43_TX4_PHY_ANT1;
2099                 break;
2100         case B43_ANTENNA_AUTO:
2101                 ant |= B43_TX4_PHY_ANTLAST;
2102                 break;
2103         default:
2104                 B43_WARN_ON(1);
2105         }
2106
2107         /* FIXME We also need to set the other flags of the PHY control field somewhere. */
2108
2109         /* For Beacons */
2110         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
2111         tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2112         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
2113         /* For ACK/CTS */
2114         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
2115         tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2116         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
2117         /* For Probe Resposes */
2118         tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
2119         tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
2120         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
2121 }
2122
2123 /* This is the opposite of b43_chip_init() */
2124 static void b43_chip_exit(struct b43_wldev *dev)
2125 {
2126         b43_radio_turn_off(dev, 1);
2127         b43_gpio_cleanup(dev);
2128         /* firmware is released later */
2129 }
2130
2131 /* Initialize the chip
2132  * http://bcm-specs.sipsolutions.net/ChipInit
2133  */
2134 static int b43_chip_init(struct b43_wldev *dev)
2135 {
2136         struct b43_phy *phy = &dev->phy;
2137         int err, tmp;
2138         u32 value32;
2139         u16 value16;
2140
2141         b43_write32(dev, B43_MMIO_MACCTL,
2142                     B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED);
2143
2144         err = b43_request_firmware(dev);
2145         if (err)
2146                 goto out;
2147         err = b43_upload_microcode(dev);
2148         if (err)
2149                 goto out;       /* firmware is released later */
2150
2151         err = b43_gpio_init(dev);
2152         if (err)
2153                 goto out;       /* firmware is released later */
2154
2155         err = b43_upload_initvals(dev);
2156         if (err)
2157                 goto err_gpio_clean;
2158         b43_radio_turn_on(dev);
2159
2160         b43_write16(dev, 0x03E6, 0x0000);
2161         err = b43_phy_init(dev);
2162         if (err)
2163                 goto err_radio_off;
2164
2165         /* Select initial Interference Mitigation. */
2166         tmp = phy->interfmode;
2167         phy->interfmode = B43_INTERFMODE_NONE;
2168         b43_radio_set_interference_mitigation(dev, tmp);
2169
2170         b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
2171         b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
2172
2173         if (phy->type == B43_PHYTYPE_B) {
2174                 value16 = b43_read16(dev, 0x005E);
2175                 value16 |= 0x0004;
2176                 b43_write16(dev, 0x005E, value16);
2177         }
2178         b43_write32(dev, 0x0100, 0x01000000);
2179         if (dev->dev->id.revision < 5)
2180                 b43_write32(dev, 0x010C, 0x01000000);
2181
2182         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2183                     & ~B43_MACCTL_INFRA);
2184         b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
2185                     | B43_MACCTL_INFRA);
2186
2187         /* Probe Response Timeout value */
2188         /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
2189         b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
2190
2191         /* Initially set the wireless operation mode. */
2192         b43_adjust_opmode(dev);
2193
2194         if (dev->dev->id.revision < 3) {
2195                 b43_write16(dev, 0x060E, 0x0000);
2196                 b43_write16(dev, 0x0610, 0x8000);
2197                 b43_write16(dev, 0x0604, 0x0000);
2198                 b43_write16(dev, 0x0606, 0x0200);
2199         } else {
2200                 b43_write32(dev, 0x0188, 0x80000000);
2201                 b43_write32(dev, 0x018C, 0x02000000);
2202         }
2203         b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
2204         b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
2205         b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
2206         b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
2207         b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
2208         b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
2209         b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
2210
2211         value32 = ssb_read32(dev->dev, SSB_TMSLOW);
2212         value32 |= 0x00100000;
2213         ssb_write32(dev->dev, SSB_TMSLOW, value32);
2214
2215         b43_write16(dev, B43_MMIO_POWERUP_DELAY,
2216                     dev->dev->bus->chipco.fast_pwrup_delay);
2217
2218         err = 0;
2219         b43dbg(dev->wl, "Chip initialized\n");
2220 out:
2221         return err;
2222
2223 err_radio_off:
2224         b43_radio_turn_off(dev, 1);
2225 err_gpio_clean:
2226         b43_gpio_cleanup(dev);
2227         return err;
2228 }
2229
2230 static void b43_periodic_every120sec(struct b43_wldev *dev)
2231 {
2232         struct b43_phy *phy = &dev->phy;
2233
2234         if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
2235                 return;
2236
2237         b43_mac_suspend(dev);
2238         b43_lo_g_measure(dev);
2239         b43_mac_enable(dev);
2240         if (b43_has_hardware_pctl(phy))
2241                 b43_lo_g_ctl_mark_all_unused(dev);
2242 }
2243
2244 static void b43_periodic_every60sec(struct b43_wldev *dev)
2245 {
2246         struct b43_phy *phy = &dev->phy;
2247
2248         if (!b43_has_hardware_pctl(phy))
2249                 b43_lo_g_ctl_mark_all_unused(dev);
2250         if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
2251                 b43_mac_suspend(dev);
2252                 b43_calc_nrssi_slope(dev);
2253                 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
2254                         u8 old_chan = phy->channel;
2255
2256                         /* VCO Calibration */
2257                         if (old_chan >= 8)
2258                                 b43_radio_selectchannel(dev, 1, 0);
2259                         else
2260                                 b43_radio_selectchannel(dev, 13, 0);
2261                         b43_radio_selectchannel(dev, old_chan, 0);
2262                 }
2263                 b43_mac_enable(dev);
2264         }
2265 }
2266
2267 static void b43_periodic_every30sec(struct b43_wldev *dev)
2268 {
2269         /* Update device statistics. */
2270         b43_calculate_link_quality(dev);
2271 }
2272
2273 static void b43_periodic_every15sec(struct b43_wldev *dev)
2274 {
2275         struct b43_phy *phy = &dev->phy;
2276
2277         if (phy->type == B43_PHYTYPE_G) {
2278                 //TODO: update_aci_moving_average
2279                 if (phy->aci_enable && phy->aci_wlan_automatic) {
2280                         b43_mac_suspend(dev);
2281                         if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
2282                                 if (0 /*TODO: bunch of conditions */ ) {
2283                                         b43_radio_set_interference_mitigation
2284                                             (dev, B43_INTERFMODE_MANUALWLAN);
2285                                 }
2286                         } else if (1 /*TODO*/) {
2287                                 /*
2288                                    if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
2289                                    b43_radio_set_interference_mitigation(dev,
2290                                    B43_INTERFMODE_NONE);
2291                                    }
2292                                  */
2293                         }
2294                         b43_mac_enable(dev);
2295                 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
2296                            phy->rev == 1) {
2297                         //TODO: implement rev1 workaround
2298                 }
2299         }
2300         b43_phy_xmitpower(dev); //FIXME: unless scanning?
2301         //TODO for APHY (temperature?)
2302
2303         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
2304         wmb();
2305 }
2306
2307 static void do_periodic_work(struct b43_wldev *dev)
2308 {
2309         unsigned int state;
2310
2311         state = dev->periodic_state;
2312         if (state % 8 == 0)
2313                 b43_periodic_every120sec(dev);
2314         if (state % 4 == 0)
2315                 b43_periodic_every60sec(dev);
2316         if (state % 2 == 0)
2317                 b43_periodic_every30sec(dev);
2318         b43_periodic_every15sec(dev);
2319 }
2320
2321 /* Periodic work locking policy:
2322  *      The whole periodic work handler is protected by
2323  *      wl->mutex. If another lock is needed somewhere in the
2324  *      pwork callchain, it's aquired in-place, where it's needed.
2325  */
2326 static void b43_periodic_work_handler(struct work_struct *work)
2327 {
2328         struct b43_wldev *dev = container_of(work, struct b43_wldev,
2329                                              periodic_work.work);
2330         struct b43_wl *wl = dev->wl;
2331         unsigned long delay;
2332
2333         mutex_lock(&wl->mutex);
2334
2335         if (unlikely(b43_status(dev) != B43_STAT_STARTED))
2336                 goto out;
2337         if (b43_debug(dev, B43_DBG_PWORK_STOP))
2338                 goto out_requeue;
2339
2340         do_periodic_work(dev);
2341
2342         dev->periodic_state++;
2343 out_requeue:
2344         if (b43_debug(dev, B43_DBG_PWORK_FAST))
2345                 delay = msecs_to_jiffies(50);
2346         else
2347                 delay = round_jiffies_relative(HZ * 15);
2348         queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
2349 out:
2350         mutex_unlock(&wl->mutex);
2351 }
2352
2353 static void b43_periodic_tasks_setup(struct b43_wldev *dev)
2354 {
2355         struct delayed_work *work = &dev->periodic_work;
2356
2357         dev->periodic_state = 0;
2358         INIT_DELAYED_WORK(work, b43_periodic_work_handler);
2359         queue_delayed_work(dev->wl->hw->workqueue, work, 0);
2360 }
2361
2362 /* Check if communication with the device works correctly. */
2363 static int b43_validate_chipaccess(struct b43_wldev *dev)
2364 {
2365         u32 v, backup;
2366
2367         backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
2368
2369         /* Check for read/write and endianness problems. */
2370         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
2371         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
2372                 goto error;
2373         b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
2374         if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
2375                 goto error;
2376
2377         b43_shm_write32(dev, B43_SHM_SHARED, 0, backup);
2378
2379         if ((dev->dev->id.revision >= 3) && (dev->dev->id.revision <= 10)) {
2380                 /* The 32bit register shadows the two 16bit registers
2381                  * with update sideeffects. Validate this. */
2382                 b43_write16(dev, B43_MMIO_TSF_CFP_START, 0xAAAA);
2383                 b43_write32(dev, B43_MMIO_TSF_CFP_START, 0xCCCCBBBB);
2384                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_LOW) != 0xBBBB)
2385                         goto error;
2386                 if (b43_read16(dev, B43_MMIO_TSF_CFP_START_HIGH) != 0xCCCC)
2387                         goto error;
2388         }
2389         b43_write32(dev, B43_MMIO_TSF_CFP_START, 0);
2390
2391         v = b43_read32(dev, B43_MMIO_MACCTL);
2392         v |= B43_MACCTL_GMODE;
2393         if (v != (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
2394                 goto error;
2395
2396         return 0;
2397 error:
2398         b43err(dev->wl, "Failed to validate the chipaccess\n");
2399         return -ENODEV;
2400 }
2401
2402 static void b43_security_init(struct b43_wldev *dev)
2403 {
2404         dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
2405         B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
2406         dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
2407         /* KTP is a word address, but we address SHM bytewise.
2408          * So multiply by two.
2409          */
2410         dev->ktp *= 2;
2411         if (dev->dev->id.revision >= 5) {
2412                 /* Number of RCMTA address slots */
2413                 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
2414         }
2415         b43_clear_keys(dev);
2416 }
2417
2418 static int b43_rng_read(struct hwrng *rng, u32 * data)
2419 {
2420         struct b43_wl *wl = (struct b43_wl *)rng->priv;
2421         unsigned long flags;
2422
2423         /* Don't take wl->mutex here, as it could deadlock with
2424          * hwrng internal locking. It's not needed to take
2425          * wl->mutex here, anyway. */
2426
2427         spin_lock_irqsave(&wl->irq_lock, flags);
2428         *data = b43_read16(wl->current_dev, B43_MMIO_RNG);
2429         spin_unlock_irqrestore(&wl->irq_lock, flags);
2430
2431         return (sizeof(u16));
2432 }
2433
2434 static void b43_rng_exit(struct b43_wl *wl)
2435 {
2436         if (wl->rng_initialized)
2437                 hwrng_unregister(&wl->rng);
2438 }
2439
2440 static int b43_rng_init(struct b43_wl *wl)
2441 {
2442         int err;
2443
2444         snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
2445                  "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
2446         wl->rng.name = wl->rng_name;
2447         wl->rng.data_read = b43_rng_read;
2448         wl->rng.priv = (unsigned long)wl;
2449         wl->rng_initialized = 1;
2450         err = hwrng_register(&wl->rng);
2451         if (err) {
2452                 wl->rng_initialized = 0;
2453                 b43err(wl, "Failed to register the random "
2454                        "number generator (%d)\n", err);
2455         }
2456
2457         return err;
2458 }
2459
2460 static int b43_op_tx(struct ieee80211_hw *hw,
2461                      struct sk_buff *skb,
2462                      struct ieee80211_tx_control *ctl)
2463 {
2464         struct b43_wl *wl = hw_to_b43_wl(hw);
2465         struct b43_wldev *dev = wl->current_dev;
2466         int err = -ENODEV;
2467
2468         if (unlikely(!dev))
2469                 goto out;
2470         if (unlikely(b43_status(dev) < B43_STAT_STARTED))
2471                 goto out;
2472         /* DMA-TX is done without a global lock. */
2473         err = b43_dma_tx(dev, skb, ctl);
2474 out:
2475         if (unlikely(err))
2476                 return NETDEV_TX_BUSY;
2477         return NETDEV_TX_OK;
2478 }
2479
2480 static int b43_op_conf_tx(struct ieee80211_hw *hw,
2481                           int queue,
2482                           const struct ieee80211_tx_queue_params *params)
2483 {
2484         return 0;
2485 }
2486
2487 static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
2488                                struct ieee80211_tx_queue_stats *stats)
2489 {
2490         struct b43_wl *wl = hw_to_b43_wl(hw);
2491         struct b43_wldev *dev = wl->current_dev;
2492         unsigned long flags;
2493         int err = -ENODEV;
2494
2495         if (!dev)
2496                 goto out;
2497         spin_lock_irqsave(&wl->irq_lock, flags);
2498         if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
2499                 b43_dma_get_tx_stats(dev, stats);
2500                 err = 0;
2501         }
2502         spin_unlock_irqrestore(&wl->irq_lock, flags);
2503 out:
2504         return err;
2505 }
2506
2507 static int b43_op_get_stats(struct ieee80211_hw *hw,
2508                             struct ieee80211_low_level_stats *stats)
2509 {
2510         struct b43_wl *wl = hw_to_b43_wl(hw);
2511         unsigned long flags;
2512
2513         spin_lock_irqsave(&wl->irq_lock, flags);
2514         memcpy(stats, &wl->ieee_stats, sizeof(*stats));
2515         spin_unlock_irqrestore(&wl->irq_lock, flags);
2516
2517         return 0;
2518 }
2519
2520 static const char *phymode_to_string(unsigned int phymode)
2521 {
2522         switch (phymode) {
2523         case B43_PHYMODE_A:
2524                 return "A";
2525         case B43_PHYMODE_B:
2526                 return "B";
2527         case B43_PHYMODE_G:
2528                 return "G";
2529         default:
2530                 B43_WARN_ON(1);
2531         }
2532         return "";
2533 }
2534
2535 static int find_wldev_for_phymode(struct b43_wl *wl,
2536                                   unsigned int phymode,
2537                                   struct b43_wldev **dev, bool * gmode)
2538 {
2539         struct b43_wldev *d;
2540
2541         list_for_each_entry(d, &wl->devlist, list) {
2542                 if (d->phy.possible_phymodes & phymode) {
2543                         /* Ok, this device supports the PHY-mode.
2544                          * Now figure out how the gmode bit has to be
2545                          * set to support it. */
2546                         if (phymode == B43_PHYMODE_A)
2547                                 *gmode = 0;
2548                         else
2549                                 *gmode = 1;
2550                         *dev = d;
2551
2552                         return 0;
2553                 }
2554         }
2555
2556         return -ESRCH;
2557 }
2558
2559 static void b43_put_phy_into_reset(struct b43_wldev *dev)
2560 {
2561         struct ssb_device *sdev = dev->dev;
2562         u32 tmslow;
2563
2564         tmslow = ssb_read32(sdev, SSB_TMSLOW);
2565         tmslow &= ~B43_TMSLOW_GMODE;
2566         tmslow |= B43_TMSLOW_PHYRESET;
2567         tmslow |= SSB_TMSLOW_FGC;
2568         ssb_write32(sdev, SSB_TMSLOW, tmslow);
2569         msleep(1);
2570
2571         tmslow = ssb_read32(sdev, SSB_TMSLOW);
2572         tmslow &= ~SSB_TMSLOW_FGC;
2573         tmslow |= B43_TMSLOW_PHYRESET;
2574         ssb_write32(sdev, SSB_TMSLOW, tmslow);
2575         msleep(1);
2576 }
2577
2578 /* Expects wl->mutex locked */
2579 static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode)
2580 {
2581         struct b43_wldev *up_dev;
2582         struct b43_wldev *down_dev;
2583         int err;
2584         bool gmode = 0;
2585         int prev_status;
2586
2587         err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
2588         if (err) {
2589                 b43err(wl, "Could not find a device for %s-PHY mode\n",
2590                        phymode_to_string(new_mode));
2591                 return err;
2592         }
2593         if ((up_dev == wl->current_dev) &&
2594             (!!wl->current_dev->phy.gmode == !!gmode)) {
2595                 /* This device is already running. */
2596                 return 0;
2597         }
2598         b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
2599                phymode_to_string(new_mode));
2600         down_dev = wl->current_dev;
2601
2602         prev_status = b43_status(down_dev);
2603         /* Shutdown the currently running core. */
2604         if (prev_status >= B43_STAT_STARTED)
2605                 b43_wireless_core_stop(down_dev);
2606         if (prev_status >= B43_STAT_INITIALIZED)
2607                 b43_wireless_core_exit(down_dev);
2608
2609         if (down_dev != up_dev) {
2610                 /* We switch to a different core, so we put PHY into
2611                  * RESET on the old core. */
2612                 b43_put_phy_into_reset(down_dev);
2613         }
2614
2615         /* Now start the new core. */
2616         up_dev->phy.gmode = gmode;
2617         if (prev_status >= B43_STAT_INITIALIZED) {
2618                 err = b43_wireless_core_init(up_dev);
2619                 if (err) {
2620                         b43err(wl, "Fatal: Could not initialize device for "
2621                                "newly selected %s-PHY mode\n",
2622                                phymode_to_string(new_mode));
2623                         goto init_failure;
2624                 }
2625         }
2626         if (prev_status >= B43_STAT_STARTED) {
2627                 err = b43_wireless_core_start(up_dev);
2628                 if (err) {
2629                         b43err(wl, "Fatal: Coult not start device for "
2630                                "newly selected %s-PHY mode\n",
2631                                phymode_to_string(new_mode));
2632                         b43_wireless_core_exit(up_dev);
2633                         goto init_failure;
2634                 }
2635         }
2636         B43_WARN_ON(b43_status(up_dev) != prev_status);
2637
2638         wl->current_dev = up_dev;
2639
2640         return 0;
2641       init_failure:
2642         /* Whoops, failed to init the new core. No core is operating now. */
2643         wl->current_dev = NULL;
2644         return err;
2645 }
2646
2647 /* Check if the use of the antenna that ieee80211 told us to
2648  * use is possible. This will fall back to DEFAULT.
2649  * "antenna_nr" is the antenna identifier we got from ieee80211. */
2650 u8 b43_ieee80211_antenna_sanitize(struct b43_wldev *dev,
2651                                   u8 antenna_nr)
2652 {
2653         u8 antenna_mask;
2654
2655         if (antenna_nr == 0) {
2656                 /* Zero means "use default antenna". That's always OK. */
2657                 return 0;
2658         }
2659
2660         /* Get the mask of available antennas. */
2661         if (dev->phy.gmode)
2662                 antenna_mask = dev->dev->bus->sprom.ant_available_bg;
2663         else
2664                 antenna_mask = dev->dev->bus->sprom.ant_available_a;
2665
2666         if (!(antenna_mask & (1 << (antenna_nr - 1)))) {
2667                 /* This antenna is not available. Fall back to default. */
2668                 return 0;
2669         }
2670
2671         return antenna_nr;
2672 }
2673
2674 static int b43_antenna_from_ieee80211(struct b43_wldev *dev, u8 antenna)
2675 {
2676         antenna = b43_ieee80211_antenna_sanitize(dev, antenna);
2677         switch (antenna) {
2678         case 0:         /* default/diversity */
2679                 return B43_ANTENNA_DEFAULT;
2680         case 1:         /* Antenna 0 */
2681                 return B43_ANTENNA0;
2682         case 2:         /* Antenna 1 */
2683                 return B43_ANTENNA1;
2684         default:
2685                 return B43_ANTENNA_DEFAULT;
2686         }
2687 }
2688
2689 static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2690 {
2691         struct b43_wl *wl = hw_to_b43_wl(hw);
2692         struct b43_wldev *dev;
2693         struct b43_phy *phy;
2694         unsigned long flags;
2695         unsigned int new_phymode = 0xFFFF;
2696         int antenna;
2697         int err = 0;
2698         u32 savedirqs;
2699
2700         mutex_lock(&wl->mutex);
2701
2702         /* Switch the PHY mode (if necessary). */
2703         switch (conf->phymode) {
2704         case MODE_IEEE80211A:
2705                 new_phymode = B43_PHYMODE_A;
2706                 break;
2707         case MODE_IEEE80211B:
2708                 new_phymode = B43_PHYMODE_B;
2709                 break;
2710         case MODE_IEEE80211G:
2711                 new_phymode = B43_PHYMODE_G;
2712                 break;
2713         default:
2714                 B43_WARN_ON(1);
2715         }
2716         err = b43_switch_phymode(wl, new_phymode);
2717         if (err)
2718                 goto out_unlock_mutex;
2719         dev = wl->current_dev;
2720         phy = &dev->phy;
2721
2722         /* Disable IRQs while reconfiguring the device.
2723          * This makes it possible to drop the spinlock throughout
2724          * the reconfiguration process. */
2725         spin_lock_irqsave(&wl->irq_lock, flags);
2726         if (b43_status(dev) < B43_STAT_STARTED) {
2727                 spin_unlock_irqrestore(&wl->irq_lock, flags);
2728                 goto out_unlock_mutex;
2729         }
2730         savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
2731         spin_unlock_irqrestore(&wl->irq_lock, flags);
2732         b43_synchronize_irq(dev);
2733
2734         /* Switch to the requested channel.
2735          * The firmware takes care of races with the TX handler. */
2736         if (conf->channel_val != phy->channel)
2737                 b43_radio_selectchannel(dev, conf->channel_val, 0);
2738
2739         /* Enable/Disable ShortSlot timing. */
2740         if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
2741             dev->short_slot) {
2742                 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
2743                 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
2744                         b43_short_slot_timing_enable(dev);
2745                 else
2746                         b43_short_slot_timing_disable(dev);
2747         }
2748
2749         dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2750
2751         /* Adjust the desired TX power level. */
2752         if (conf->power_level != 0) {
2753                 if (conf->power_level != phy->power_level) {
2754                         phy->power_level = conf->power_level;
2755                         b43_phy_xmitpower(dev);
2756                 }
2757         }
2758
2759         /* Antennas for RX and management frame TX. */
2760         antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_tx);
2761         b43_mgmtframe_txantenna(dev, antenna);
2762         antenna = b43_antenna_from_ieee80211(dev, conf->antenna_sel_rx);
2763         b43_set_rx_antenna(dev, antenna);
2764
2765         /* Update templates for AP mode. */
2766         if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
2767                 b43_set_beacon_int(dev, conf->beacon_int);
2768
2769         if (!!conf->radio_enabled != phy->radio_on) {
2770                 if (conf->radio_enabled) {
2771                         b43_radio_turn_on(dev);
2772                         b43info(dev->wl, "Radio turned on by software\n");
2773                         if (!dev->radio_hw_enable) {
2774                                 b43info(dev->wl, "The hardware RF-kill button "
2775                                         "still turns the radio physically off. "
2776                                         "Press the button to turn it on.\n");
2777                         }
2778                 } else {
2779                         b43_radio_turn_off(dev, 0);
2780                         b43info(dev->wl, "Radio turned off by software\n");
2781                 }
2782         }
2783
2784         spin_lock_irqsave(&wl->irq_lock, flags);
2785         b43_interrupt_enable(dev, savedirqs);
2786         mmiowb();
2787         spin_unlock_irqrestore(&wl->irq_lock, flags);
2788       out_unlock_mutex:
2789         mutex_unlock(&wl->mutex);
2790
2791         return err;
2792 }
2793
2794 static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2795                            const u8 *local_addr, const u8 *addr,
2796                            struct ieee80211_key_conf *key)
2797 {
2798         struct b43_wl *wl = hw_to_b43_wl(hw);
2799         struct b43_wldev *dev;
2800         unsigned long flags;
2801         u8 algorithm;
2802         u8 index;
2803         int err;
2804         DECLARE_MAC_BUF(mac);
2805
2806         if (modparam_nohwcrypt)
2807                 return -ENOSPC; /* User disabled HW-crypto */
2808
2809         mutex_lock(&wl->mutex);
2810         spin_lock_irqsave(&wl->irq_lock, flags);
2811
2812         dev = wl->current_dev;
2813         err = -ENODEV;
2814         if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
2815                 goto out_unlock;
2816
2817         err = -EINVAL;
2818         switch (key->alg) {
2819         case ALG_WEP:
2820                 if (key->keylen == 5)
2821                         algorithm = B43_SEC_ALGO_WEP40;
2822                 else
2823                         algorithm = B43_SEC_ALGO_WEP104;
2824                 break;
2825         case ALG_TKIP:
2826                 algorithm = B43_SEC_ALGO_TKIP;
2827                 break;
2828         case ALG_CCMP:
2829                 algorithm = B43_SEC_ALGO_AES;
2830                 break;
2831         default:
2832                 B43_WARN_ON(1);
2833                 goto out_unlock;
2834         }
2835         index = (u8) (key->keyidx);
2836         if (index > 3)
2837                 goto out_unlock;
2838
2839         switch (cmd) {
2840         case SET_KEY:
2841                 if (algorithm == B43_SEC_ALGO_TKIP) {
2842                         /* FIXME: No TKIP hardware encryption for now. */
2843                         err = -EOPNOTSUPP;
2844                         goto out_unlock;
2845                 }
2846
2847                 if (is_broadcast_ether_addr(addr)) {
2848                         /* addr is FF:FF:FF:FF:FF:FF for default keys */
2849                         err = b43_key_write(dev, index, algorithm,
2850                                             key->key, key->keylen, NULL, key);
2851                 } else {
2852                         /*
2853                          * either pairwise key or address is 00:00:00:00:00:00
2854                          * for transmit-only keys
2855                          */
2856                         err = b43_key_write(dev, -1, algorithm,
2857                                             key->key, key->keylen, addr, key);
2858                 }
2859                 if (err)
2860                         goto out_unlock;
2861
2862                 if (algorithm == B43_SEC_ALGO_WEP40 ||
2863                     algorithm == B43_SEC_ALGO_WEP104) {
2864                         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
2865                 } else {
2866                         b43_hf_write(dev,
2867                                      b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
2868                 }
2869                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2870                 break;
2871         case DISABLE_KEY: {
2872                 err = b43_key_clear(dev, key->hw_key_idx);
2873                 if (err)
2874                         goto out_unlock;
2875                 break;
2876         }
2877         default:
2878                 B43_WARN_ON(1);
2879         }
2880 out_unlock:
2881         spin_unlock_irqrestore(&wl->irq_lock, flags);
2882         mutex_unlock(&wl->mutex);
2883         if (!err) {
2884                 b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
2885                        "mac: %s\n",
2886                        cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
2887                        print_mac(mac, addr));
2888         }
2889         return err;
2890 }
2891
2892 static void b43_op_configure_filter(struct ieee80211_hw *hw,
2893                                     unsigned int changed, unsigned int *fflags,
2894                                     int mc_count, struct dev_addr_list *mc_list)
2895 {
2896         struct b43_wl *wl = hw_to_b43_wl(hw);
2897         struct b43_wldev *dev = wl->current_dev;
2898         unsigned long flags;
2899
2900         if (!dev) {
2901                 *fflags = 0;
2902                 return;
2903         }
2904
2905         spin_lock_irqsave(&wl->irq_lock, flags);
2906         *fflags &= FIF_PROMISC_IN_BSS |
2907                   FIF_ALLMULTI |
2908                   FIF_FCSFAIL |
2909                   FIF_PLCPFAIL |
2910                   FIF_CONTROL |
2911                   FIF_OTHER_BSS |
2912                   FIF_BCN_PRBRESP_PROMISC;
2913
2914         changed &= FIF_PROMISC_IN_BSS |
2915                    FIF_ALLMULTI |
2916                    FIF_FCSFAIL |
2917                    FIF_PLCPFAIL |
2918                    FIF_CONTROL |
2919                    FIF_OTHER_BSS |
2920                    FIF_BCN_PRBRESP_PROMISC;
2921
2922         wl->filter_flags = *fflags;
2923
2924         if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
2925                 b43_adjust_opmode(dev);
2926         spin_unlock_irqrestore(&wl->irq_lock, flags);
2927 }
2928
2929 static int b43_op_config_interface(struct ieee80211_hw *hw,
2930                                    int if_id,
2931                                    struct ieee80211_if_conf *conf)
2932 {
2933         struct b43_wl *wl = hw_to_b43_wl(hw);
2934         struct b43_wldev *dev = wl->current_dev;
2935         unsigned long flags;
2936
2937         if (!dev)
2938                 return -ENODEV;
2939         mutex_lock(&wl->mutex);
2940         spin_lock_irqsave(&wl->irq_lock, flags);
2941         B43_WARN_ON(wl->if_id != if_id);
2942         if (conf->bssid)
2943                 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
2944         else
2945                 memset(wl->bssid, 0, ETH_ALEN);
2946         if (b43_status(dev) >= B43_STAT_INITIALIZED) {
2947                 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
2948                         B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
2949                         b43_set_ssid(dev, conf->ssid, conf->ssid_len);
2950                         if (conf->beacon)
2951                                 b43_refresh_templates(dev, conf->beacon);
2952                 }
2953                 b43_write_mac_bssid_templates(dev);
2954         }
2955         spin_unlock_irqrestore(&wl->irq_lock, flags);
2956         mutex_unlock(&wl->mutex);
2957
2958         return 0;
2959 }
2960
2961 /* Locking: wl->mutex */
2962 static void b43_wireless_core_stop(struct b43_wldev *dev)
2963 {
2964         struct b43_wl *wl = dev->wl;
2965         unsigned long flags;
2966
2967         if (b43_status(dev) < B43_STAT_STARTED)
2968                 return;
2969
2970         /* Disable and sync interrupts. We must do this before than
2971          * setting the status to INITIALIZED, as the interrupt handler
2972          * won't care about IRQs then. */
2973         spin_lock_irqsave(&wl->irq_lock, flags);
2974         dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
2975         b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
2976         spin_unlock_irqrestore(&wl->irq_lock, flags);
2977         b43_synchronize_irq(dev);
2978
2979         b43_set_status(dev, B43_STAT_INITIALIZED);
2980
2981         mutex_unlock(&wl->mutex);
2982         /* Must unlock as it would otherwise deadlock. No races here.
2983          * Cancel the possibly running self-rearming periodic work. */
2984         cancel_delayed_work_sync(&dev->periodic_work);
2985         mutex_lock(&wl->mutex);
2986
2987         ieee80211_stop_queues(wl->hw);  //FIXME this could cause a deadlock, as mac80211 seems buggy.
2988
2989         b43_mac_suspend(dev);
2990         free_irq(dev->dev->irq, dev);
2991         b43dbg(wl, "Wireless interface stopped\n");
2992 }
2993
2994 /* Locking: wl->mutex */
2995 static int b43_wireless_core_start(struct b43_wldev *dev)
2996 {
2997         int err;
2998
2999         B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
3000
3001         drain_txstatus_queue(dev);
3002         err = request_irq(dev->dev->irq, b43_interrupt_handler,
3003                           IRQF_SHARED, KBUILD_MODNAME, dev);
3004         if (err) {
3005                 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
3006                 goto out;
3007         }
3008
3009         /* We are ready to run. */
3010         b43_set_status(dev, B43_STAT_STARTED);
3011
3012         /* Start data flow (TX/RX). */
3013         b43_mac_enable(dev);
3014         b43_interrupt_enable(dev, dev->irq_savedstate);
3015         ieee80211_start_queues(dev->wl->hw);
3016
3017         /* Start maintainance work */
3018         b43_periodic_tasks_setup(dev);
3019
3020         b43dbg(dev->wl, "Wireless interface started\n");
3021       out:
3022         return err;
3023 }
3024
3025 /* Get PHY and RADIO versioning numbers */
3026 static int b43_phy_versioning(struct b43_wldev *dev)
3027 {
3028         struct b43_phy *phy = &dev->phy;
3029         u32 tmp;
3030         u8 analog_type;
3031         u8 phy_type;
3032         u8 phy_rev;
3033         u16 radio_manuf;
3034         u16 radio_ver;
3035         u16 radio_rev;
3036         int unsupported = 0;
3037
3038         /* Get PHY versioning */
3039         tmp = b43_read16(dev, B43_MMIO_PHY_VER);
3040         analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
3041         phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
3042         phy_rev = (tmp & B43_PHYVER_VERSION);
3043         switch (phy_type) {
3044         case B43_PHYTYPE_A:
3045                 if (phy_rev >= 4)
3046                         unsupported = 1;
3047                 break;
3048         case B43_PHYTYPE_B:
3049                 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
3050                     && phy_rev != 7)
3051                         unsupported = 1;
3052                 break;
3053         case B43_PHYTYPE_G:
3054                 if (phy_rev > 9)
3055                         unsupported = 1;
3056                 break;
3057         default:
3058                 unsupported = 1;
3059         };
3060         if (unsupported) {
3061                 b43err(dev->wl, "FOUND UNSUPPORTED PHY "
3062                        "(Analog %u, Type %u, Revision %u)\n",
3063                        analog_type, phy_type, phy_rev);
3064                 return -EOPNOTSUPP;
3065         }
3066         b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
3067                analog_type, phy_type, phy_rev);
3068
3069         /* Get RADIO versioning */
3070         if (dev->dev->bus->chip_id == 0x4317) {
3071                 if (dev->dev->bus->chip_rev == 0)
3072                         tmp = 0x3205017F;
3073                 else if (dev->dev->bus->chip_rev == 1)
3074                         tmp = 0x4205017F;
3075                 else
3076                         tmp = 0x5205017F;
3077         } else {
3078                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3079                 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH);
3080                 tmp <<= 16;
3081                 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
3082                 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
3083         }
3084         radio_manuf = (tmp & 0x00000FFF);
3085         radio_ver = (tmp & 0x0FFFF000) >> 12;
3086         radio_rev = (tmp & 0xF0000000) >> 28;
3087         switch (phy_type) {
3088         case B43_PHYTYPE_A:
3089                 if (radio_ver != 0x2060)
3090                         unsupported = 1;
3091                 if (radio_rev != 1)
3092                         unsupported = 1;
3093                 if (radio_manuf != 0x17F)
3094                         unsupported = 1;
3095                 break;
3096         case B43_PHYTYPE_B:
3097                 if ((radio_ver & 0xFFF0) != 0x2050)
3098                         unsupported = 1;
3099                 break;
3100         case B43_PHYTYPE_G:
3101                 if (radio_ver != 0x2050)
3102                         unsupported = 1;
3103                 break;
3104         default:
3105                 B43_WARN_ON(1);
3106         }
3107         if (unsupported) {
3108                 b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
3109                        "(Manuf 0x%X, Version 0x%X, Revision %u)\n",
3110                        radio_manuf, radio_ver, radio_rev);
3111                 return -EOPNOTSUPP;
3112         }
3113         b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
3114                radio_manuf, radio_ver, radio_rev);
3115
3116         phy->radio_manuf = radio_manuf;
3117         phy->radio_ver = radio_ver;
3118         phy->radio_rev = radio_rev;
3119
3120         phy->analog = analog_type;
3121         phy->type = phy_type;
3122         phy->rev = phy_rev;
3123
3124         return 0;
3125 }
3126
3127 static void setup_struct_phy_for_init(struct b43_wldev *dev,
3128                                       struct b43_phy *phy)
3129 {
3130         struct b43_txpower_lo_control *lo;
3131         int i;
3132
3133         memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
3134         memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
3135
3136         /* Flags */
3137         phy->locked = 0;
3138
3139         phy->aci_enable = 0;
3140         phy->aci_wlan_automatic = 0;
3141         phy->aci_hw_rssi = 0;
3142
3143         phy->radio_off_context.valid = 0;
3144
3145         lo = phy->lo_control;
3146         if (lo) {
3147                 memset(lo, 0, sizeof(*(phy->lo_control)));
3148                 lo->rebuild = 1;
3149                 lo->tx_bias = 0xFF;
3150         }
3151         phy->max_lb_gain = 0;
3152         phy->trsw_rx_gain = 0;
3153         phy->txpwr_offset = 0;
3154
3155         /* NRSSI */
3156         phy->nrssislope = 0;
3157         for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
3158                 phy->nrssi[i] = -1000;
3159         for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
3160                 phy->nrssi_lt[i] = i;
3161
3162         phy->lofcal = 0xFFFF;
3163         phy->initval = 0xFFFF;
3164
3165         spin_lock_init(&phy->lock);
3166         phy->interfmode = B43_INTERFMODE_NONE;
3167         phy->channel = 0xFF;
3168
3169         phy->hardware_power_control = !!modparam_hwpctl;
3170
3171         /* PHY TX errors counter. */
3172         atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
3173
3174         /* OFDM-table address caching. */
3175         phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
3176 }
3177
3178 static void setup_struct_wldev_for_init(struct b43_wldev *dev)
3179 {
3180         /* Flags */
3181         dev->reg124_set_0x4 = 0;
3182         /* Assume the radio is enabled. If it's not enabled, the state will
3183          * immediately get fixed on the first periodic work run. */
3184         dev->radio_hw_enable = 1;
3185
3186         /* Stats */
3187         memset(&dev->stats, 0, sizeof(dev->stats));
3188
3189         setup_struct_phy_for_init(dev, &dev->phy);
3190
3191         /* IRQ related flags */
3192         dev->irq_reason = 0;
3193         memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
3194         dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
3195
3196         dev->mac_suspended = 1;
3197
3198         /* Noise calculation context */
3199         memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
3200 }
3201
3202 static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
3203 {
3204         struct ssb_sprom *sprom = &dev->dev->bus->sprom;
3205         u32 hf;
3206
3207         if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
3208                 return;
3209         if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
3210                 return;
3211
3212         hf = b43_hf_read(dev);
3213         if (sprom->boardflags_lo & B43_BFL_BTCMOD)
3214                 hf |= B43_HF_BTCOEXALT;
3215         else
3216                 hf |= B43_HF_BTCOEX;
3217         b43_hf_write(dev, hf);
3218         //TODO
3219 }
3220
3221 static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
3222 {                               //TODO
3223 }
3224
3225 static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
3226 {
3227 #ifdef CONFIG_SSB_DRIVER_PCICORE
3228         struct ssb_bus *bus = dev->dev->bus;
3229         u32 tmp;
3230
3231         if (bus->pcicore.dev &&
3232             bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
3233             bus->pcicore.dev->id.revision <= 5) {
3234                 /* IMCFGLO timeouts workaround. */
3235                 tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
3236                 tmp &= ~SSB_IMCFGLO_REQTO;
3237                 tmp &= ~SSB_IMCFGLO_SERTO;
3238                 switch (bus->bustype) {
3239                 case SSB_BUSTYPE_PCI:
3240                 case SSB_BUSTYPE_PCMCIA:
3241                         tmp |= 0x32;
3242                         break;
3243                 case SSB_BUSTYPE_SSB:
3244                         tmp |= 0x53;
3245                         break;
3246                 }
3247                 ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
3248         }
3249 #endif /* CONFIG_SSB_DRIVER_PCICORE */
3250 }
3251
3252 /* Write the short and long frame retry limit values. */
3253 static void b43_set_retry_limits(struct b43_wldev *dev,
3254                                  unsigned int short_retry,
3255                                  unsigned int long_retry)
3256 {
3257         /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
3258          * the chip-internal counter. */
3259         short_retry = min(short_retry, (unsigned int)0xF);
3260         long_retry = min(long_retry, (unsigned int)0xF);
3261
3262         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
3263                         short_retry);
3264         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
3265                         long_retry);
3266 }
3267
3268 /* Shutdown a wireless core */
3269 /* Locking: wl->mutex */
3270 static void b43_wireless_core_exit(struct b43_wldev *dev)
3271 {
3272         struct b43_phy *phy = &dev->phy;
3273
3274         B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
3275         if (b43_status(dev) != B43_STAT_INITIALIZED)
3276                 return;
3277         b43_set_status(dev, B43_STAT_UNINIT);
3278
3279         b43_leds_exit(dev);
3280         b43_rng_exit(dev->wl);
3281         b43_dma_free(dev);
3282         b43_chip_exit(dev);
3283         b43_radio_turn_off(dev, 1);
3284         b43_switch_analog(dev, 0);
3285         if (phy->dyn_tssi_tbl)
3286                 kfree(phy->tssi2dbm);
3287         kfree(phy->lo_control);
3288         phy->lo_control = NULL;
3289         ssb_device_disable(dev->dev, 0);
3290         ssb_bus_may_powerdown(dev->dev->bus);
3291 }
3292
3293 /* Initialize a wireless core */
3294 static int b43_wireless_core_init(struct b43_wldev *dev)
3295 {
3296         struct b43_wl *wl = dev->wl;
3297         struct ssb_bus *bus = dev->dev->bus;
3298         struct ssb_sprom *sprom = &bus->sprom;
3299         struct b43_phy *phy = &dev->phy;
3300         int err;
3301         u32 hf, tmp;
3302
3303         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3304
3305         err = ssb_bus_powerup(bus, 0);
3306         if (err)
3307                 goto out;
3308         if (!ssb_device_is_enabled(dev->dev)) {
3309                 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
3310                 b43_wireless_core_reset(dev, tmp);
3311         }
3312
3313         if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
3314                 phy->lo_control =
3315                     kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
3316                 if (!phy->lo_control) {
3317                         err = -ENOMEM;
3318                         goto err_busdown;
3319                 }
3320         }
3321         setup_struct_wldev_for_init(dev);
3322
3323         err = b43_phy_init_tssi2dbm_table(dev);
3324         if (err)
3325                 goto err_kfree_lo_control;
3326
3327         /* Enable IRQ routing to this device. */
3328         ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
3329
3330         b43_imcfglo_timeouts_workaround(dev);
3331         b43_bluetooth_coext_disable(dev);
3332         b43_phy_early_init(dev);
3333         err = b43_chip_init(dev);
3334         if (err)
3335                 goto err_kfree_tssitbl;
3336         b43_shm_write16(dev, B43_SHM_SHARED,
3337                         B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
3338         hf = b43_hf_read(dev);
3339         if (phy->type == B43_PHYTYPE_G) {
3340                 hf |= B43_HF_SYMW;
3341                 if (phy->rev == 1)
3342                         hf |= B43_HF_GDCW;
3343                 if (sprom->boardflags_lo & B43_BFL_PACTRL)
3344                         hf |= B43_HF_OFDMPABOOST;
3345         } else if (phy->type == B43_PHYTYPE_B) {
3346                 hf |= B43_HF_SYMW;
3347                 if (phy->rev >= 2 && phy->radio_ver == 0x2050)
3348                         hf &= ~B43_HF_GDCW;
3349         }
3350         b43_hf_write(dev, hf);
3351
3352         b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
3353                              B43_DEFAULT_LONG_RETRY_LIMIT);
3354         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
3355         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
3356
3357         /* Disable sending probe responses from firmware.
3358          * Setting the MaxTime to one usec will always trigger
3359          * a timeout, so we never send any probe resp.
3360          * A timeout of zero is infinite. */
3361         b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
3362
3363         b43_rate_memory_init(dev);
3364
3365         /* Minimum Contention Window */
3366         if (phy->type == B43_PHYTYPE_B) {
3367                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
3368         } else {
3369                 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
3370         }
3371         /* Maximum Contention Window */
3372         b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
3373
3374         err = b43_dma_init(dev);
3375         if (err)
3376                 goto err_chip_exit;
3377         b43_qos_init(dev);
3378
3379 //FIXME
3380 #if 1
3381         b43_write16(dev, 0x0612, 0x0050);
3382         b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
3383         b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
3384 #endif
3385
3386         b43_bluetooth_coext_enable(dev);
3387
3388         ssb_bus_powerup(bus, 1);        /* Enable dynamic PCTL */
3389         memset(wl->bssid, 0, ETH_ALEN);
3390         memset(wl->mac_addr, 0, ETH_ALEN);
3391         b43_upload_card_macaddress(dev);
3392         b43_security_init(dev);
3393         b43_rng_init(wl);
3394
3395         b43_set_status(dev, B43_STAT_INITIALIZED);
3396
3397         b43_leds_init(dev);
3398 out:
3399         return err;
3400
3401       err_chip_exit:
3402         b43_chip_exit(dev);
3403       err_kfree_tssitbl:
3404         if (phy->dyn_tssi_tbl)
3405                 kfree(phy->tssi2dbm);
3406       err_kfree_lo_control:
3407         kfree(phy->lo_control);
3408         phy->lo_control = NULL;
3409       err_busdown:
3410         ssb_bus_may_powerdown(bus);
3411         B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
3412         return err;
3413 }
3414
3415 static int b43_op_add_interface(struct ieee80211_hw *hw,
3416                                 struct ieee80211_if_init_conf *conf)
3417 {
3418         struct b43_wl *wl = hw_to_b43_wl(hw);
3419         struct b43_wldev *dev;
3420         unsigned long flags;
3421         int err = -EOPNOTSUPP;
3422
3423         /* TODO: allow WDS/AP devices to coexist */
3424
3425         if (conf->type != IEEE80211_IF_TYPE_AP &&
3426             conf->type != IEEE80211_IF_TYPE_STA &&
3427             conf->type != IEEE80211_IF_TYPE_WDS &&
3428             conf->type != IEEE80211_IF_TYPE_IBSS)
3429                 return -EOPNOTSUPP;
3430
3431         mutex_lock(&wl->mutex);
3432         if (wl->operating)
3433                 goto out_mutex_unlock;
3434
3435         b43dbg(wl, "Adding Interface type %d\n", conf->type);
3436
3437         dev = wl->current_dev;
3438         wl->operating = 1;
3439         wl->if_id = conf->if_id;
3440         wl->if_type = conf->type;
3441         memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
3442
3443         spin_lock_irqsave(&wl->irq_lock, flags);
3444         b43_adjust_opmode(dev);
3445         b43_upload_card_macaddress(dev);
3446         spin_unlock_irqrestore(&wl->irq_lock, flags);
3447
3448         err = 0;
3449  out_mutex_unlock:
3450         mutex_unlock(&wl->mutex);
3451
3452         return err;
3453 }
3454
3455 static void b43_op_remove_interface(struct ieee80211_hw *hw,
3456                                     struct ieee80211_if_init_conf *conf)
3457 {
3458         struct b43_wl *wl = hw_to_b43_wl(hw);
3459         struct b43_wldev *dev = wl->current_dev;
3460         unsigned long flags;
3461
3462         b43dbg(wl, "Removing Interface type %d\n", conf->type);
3463
3464         mutex_lock(&wl->mutex);
3465
3466         B43_WARN_ON(!wl->operating);
3467         B43_WARN_ON(wl->if_id != conf->if_id);
3468
3469         wl->operating = 0;
3470
3471         spin_lock_irqsave(&wl->irq_lock, flags);
3472         b43_adjust_opmode(dev);
3473         memset(wl->mac_addr, 0, ETH_ALEN);
3474         b43_upload_card_macaddress(dev);
3475         spin_unlock_irqrestore(&wl->irq_lock, flags);
3476
3477         mutex_unlock(&wl->mutex);
3478 }
3479
3480 static int b43_op_start(struct ieee80211_hw *hw)
3481 {
3482         struct b43_wl *wl = hw_to_b43_wl(hw);
3483         struct b43_wldev *dev = wl->current_dev;
3484         int did_init = 0;
3485         int err = 0;
3486
3487         /* First register RFkill.
3488          * LEDs that are registered later depend on it. */
3489         b43_rfkill_init(dev);
3490
3491         mutex_lock(&wl->mutex);
3492
3493         if (b43_status(dev) < B43_STAT_INITIALIZED) {
3494                 err = b43_wireless_core_init(dev);
3495                 if (err)
3496                         goto out_mutex_unlock;
3497                 did_init = 1;
3498         }
3499
3500         if (b43_status(dev) < B43_STAT_STARTED) {
3501                 err = b43_wireless_core_start(dev);
3502                 if (err) {
3503                         if (did_init)
3504                                 b43_wireless_core_exit(dev);
3505                         goto out_mutex_unlock;
3506                 }
3507         }
3508
3509  out_mutex_unlock:
3510         mutex_unlock(&wl->mutex);
3511
3512         return err;
3513 }
3514
3515 static void b43_op_stop(struct ieee80211_hw *hw)
3516 {
3517         struct b43_wl *wl = hw_to_b43_wl(hw);
3518         struct b43_wldev *dev = wl->current_dev;
3519
3520         b43_rfkill_exit(dev);
3521
3522         mutex_lock(&wl->mutex);
3523         if (b43_status(dev) >= B43_STAT_STARTED)
3524                 b43_wireless_core_stop(dev);
3525         b43_wireless_core_exit(dev);
3526         mutex_unlock(&wl->mutex);
3527 }
3528
3529 static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
3530                                   u32 short_retry_limit, u32 long_retry_limit)
3531 {
3532         struct b43_wl *wl = hw_to_b43_wl(hw);
3533         struct b43_wldev *dev;
3534         int err = 0;
3535
3536         mutex_lock(&wl->mutex);
3537         dev = wl->current_dev;
3538         if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
3539                 err = -ENODEV;
3540                 goto out_unlock;
3541         }
3542         b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
3543 out_unlock:
3544         mutex_unlock(&wl->mutex);
3545
3546         return err;
3547 }
3548
3549 static const struct ieee80211_ops b43_hw_ops = {
3550         .tx                     = b43_op_tx,
3551         .conf_tx                = b43_op_conf_tx,
3552         .add_interface          = b43_op_add_interface,
3553         .remove_interface       = b43_op_remove_interface,
3554         .config                 = b43_op_config,
3555         .config_interface       = b43_op_config_interface,
3556         .configure_filter       = b43_op_configure_filter,
3557         .set_key                = b43_op_set_key,
3558         .get_stats              = b43_op_get_stats,
3559         .get_tx_stats           = b43_op_get_tx_stats,
3560         .start                  = b43_op_start,
3561         .stop                   = b43_op_stop,
3562         .set_retry_limit        = b43_op_set_retry_limit,
3563 };
3564
3565 /* Hard-reset the chip. Do not call this directly.
3566  * Use b43_controller_restart()
3567  */
3568 static void b43_chip_reset(struct work_struct *work)
3569 {
3570         struct b43_wldev *dev =
3571             container_of(work, struct b43_wldev, restart_work);
3572         struct b43_wl *wl = dev->wl;
3573         int err = 0;
3574         int prev_status;
3575
3576         mutex_lock(&wl->mutex);
3577
3578         prev_status = b43_status(dev);
3579         /* Bring the device down... */
3580         if (prev_status >= B43_STAT_STARTED)
3581                 b43_wireless_core_stop(dev);
3582         if (prev_status >= B43_STAT_INITIALIZED)
3583                 b43_wireless_core_exit(dev);
3584
3585         /* ...and up again. */
3586         if (prev_status >= B43_STAT_INITIALIZED) {
3587                 err = b43_wireless_core_init(dev);
3588                 if (err)
3589                         goto out;
3590         }
3591         if (prev_status >= B43_STAT_STARTED) {
3592                 err = b43_wireless_core_start(dev);
3593                 if (err) {
3594                         b43_wireless_core_exit(dev);
3595                         goto out;
3596                 }
3597         }
3598       out:
3599         mutex_unlock(&wl->mutex);
3600         if (err)
3601                 b43err(wl, "Controller restart FAILED\n");
3602         else
3603                 b43info(wl, "Controller restarted\n");
3604 }
3605
3606 static int b43_setup_modes(struct b43_wldev *dev,
3607                            int have_aphy, int have_bphy, int have_gphy)
3608 {
3609         struct ieee80211_hw *hw = dev->wl->hw;
3610         struct ieee80211_hw_mode *mode;
3611         struct b43_phy *phy = &dev->phy;
3612         int cnt = 0;
3613         int err;
3614
3615 /*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */
3616         have_aphy = 0;
3617
3618         phy->possible_phymodes = 0;
3619         for (; 1; cnt++) {
3620                 if (have_aphy) {
3621                         B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3622                         mode = &phy->hwmodes[cnt];
3623
3624                         mode->mode = MODE_IEEE80211A;
3625                         mode->num_channels = b43_a_chantable_size;
3626                         mode->channels = b43_a_chantable;
3627                         mode->num_rates = b43_a_ratetable_size;
3628                         mode->rates = b43_a_ratetable;
3629                         err = ieee80211_register_hwmode(hw, mode);
3630                         if (err)
3631                                 return err;
3632
3633                         phy->possible_phymodes |= B43_PHYMODE_A;
3634                         have_aphy = 0;
3635                         continue;
3636                 }
3637                 if (have_bphy) {
3638                         B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3639                         mode = &phy->hwmodes[cnt];
3640
3641                         mode->mode = MODE_IEEE80211B;
3642                         mode->num_channels = b43_bg_chantable_size;
3643                         mode->channels = b43_bg_chantable;
3644                         mode->num_rates = b43_b_ratetable_size;
3645                         mode->rates = b43_b_ratetable;
3646                         err = ieee80211_register_hwmode(hw, mode);
3647                         if (err)
3648                                 return err;
3649
3650                         phy->possible_phymodes |= B43_PHYMODE_B;
3651                         have_bphy = 0;
3652                         continue;
3653                 }
3654                 if (have_gphy) {
3655                         B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
3656                         mode = &phy->hwmodes[cnt];
3657
3658                         mode->mode = MODE_IEEE80211G;
3659                         mode->num_channels = b43_bg_chantable_size;
3660                         mode->channels = b43_bg_chantable;
3661                         mode->num_rates = b43_g_ratetable_size;
3662                         mode->rates = b43_g_ratetable;
3663                         err = ieee80211_register_hwmode(hw, mode);
3664                         if (err)
3665                                 return err;
3666
3667                         phy->possible_phymodes |= B43_PHYMODE_G;
3668                         have_gphy = 0;
3669                         continue;
3670                 }
3671                 break;
3672         }
3673
3674         return 0;
3675 }
3676
3677 static void b43_wireless_core_detach(struct b43_wldev *dev)
3678 {
3679         /* We release firmware that late to not be required to re-request
3680          * is all the time when we reinit the core. */
3681         b43_release_firmware(dev);
3682 }
3683
3684 static int b43_wireless_core_attach(struct b43_wldev *dev)
3685 {
3686         struct b43_wl *wl = dev->wl;
3687         struct ssb_bus *bus = dev->dev->bus;
3688         struct pci_dev *pdev = bus->host_pci;
3689         int err;
3690         int have_aphy = 0, have_bphy = 0, have_gphy = 0;
3691         u32 tmp;
3692
3693         /* Do NOT do any device initialization here.
3694          * Do it in wireless_core_init() instead.
3695          * This function is for gathering basic information about the HW, only.
3696          * Also some structs may be set up here. But most likely you want to have
3697          * that in core_init(), too.
3698          */
3699
3700         err = ssb_bus_powerup(bus, 0);
3701         if (err) {
3702                 b43err(wl, "Bus powerup failed\n");
3703                 goto out;
3704         }
3705         /* Get the PHY type. */
3706         if (dev->dev->id.revision >= 5) {
3707                 u32 tmshigh;
3708
3709                 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
3710                 have_aphy = !!(tmshigh & B43_TMSHIGH_APHY);
3711                 have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY);
3712                 if (!have_aphy && !have_gphy)
3713                         have_bphy = 1;
3714         } else if (dev->dev->id.revision == 4) {
3715                 have_gphy = 1;
3716                 have_aphy = 1;
3717         } else
3718                 have_bphy = 1;
3719
3720         dev->phy.gmode = (have_gphy || have_bphy);
3721         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3722         b43_wireless_core_reset(dev, tmp);
3723
3724         err = b43_phy_versioning(dev);
3725         if (err)
3726                 goto err_powerdown;
3727         /* Check if this device supports multiband. */
3728         if (!pdev ||
3729             (pdev->device != 0x4312 &&
3730              pdev->device != 0x4319 && pdev->device != 0x4324)) {
3731                 /* No multiband support. */
3732                 have_aphy = 0;
3733                 have_bphy = 0;
3734                 have_gphy = 0;
3735                 switch (dev->phy.type) {
3736                 case B43_PHYTYPE_A:
3737                         have_aphy = 1;
3738                         break;
3739                 case B43_PHYTYPE_B:
3740                         have_bphy = 1;
3741                         break;
3742                 case B43_PHYTYPE_G:
3743                         have_gphy = 1;
3744                         break;
3745                 default:
3746                         B43_WARN_ON(1);
3747                 }
3748         }
3749         dev->phy.gmode = (have_gphy || have_bphy);
3750         tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
3751         b43_wireless_core_reset(dev, tmp);
3752
3753         err = b43_validate_chipaccess(dev);
3754         if (err)
3755                 goto err_powerdown;
3756         err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy);
3757         if (err)
3758                 goto err_powerdown;
3759
3760         /* Now set some default "current_dev" */
3761         if (!wl->current_dev)
3762                 wl->current_dev = dev;
3763         INIT_WORK(&dev->restart_work, b43_chip_reset);
3764
3765         b43_radio_turn_off(dev, 1);
3766         b43_switch_analog(dev, 0);
3767         ssb_device_disable(dev->dev, 0);
3768         ssb_bus_may_powerdown(bus);
3769
3770 out:
3771         return err;
3772
3773 err_powerdown:
3774         ssb_bus_may_powerdown(bus);
3775         return err;
3776 }
3777
3778 static void b43_one_core_detach(struct ssb_device *dev)
3779 {
3780         struct b43_wldev *wldev;
3781         struct b43_wl *wl;
3782
3783         wldev = ssb_get_drvdata(dev);
3784         wl = wldev->wl;
3785         cancel_work_sync(&wldev->restart_work);
3786         b43_debugfs_remove_device(wldev);
3787         b43_wireless_core_detach(wldev);
3788         list_del(&wldev->list);
3789         wl->nr_devs--;
3790         ssb_set_drvdata(dev, NULL);
3791         kfree(wldev);
3792 }
3793
3794 static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
3795 {
3796         struct b43_wldev *wldev;
3797         struct pci_dev *pdev;
3798         int err = -ENOMEM;
3799
3800         if (!list_empty(&wl->devlist)) {
3801                 /* We are not the first core on this chip. */
3802                 pdev = dev->bus->host_pci;
3803                 /* Only special chips support more than one wireless
3804                  * core, although some of the other chips have more than
3805                  * one wireless core as well. Check for this and
3806                  * bail out early.
3807                  */
3808                 if (!pdev ||
3809                     ((pdev->device != 0x4321) &&
3810                      (pdev->device != 0x4313) && (pdev->device != 0x431A))) {
3811                         b43dbg(wl, "Ignoring unconnected 802.11 core\n");
3812                         return -ENODEV;
3813                 }
3814         }
3815
3816         wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
3817         if (!wldev)
3818                 goto out;
3819
3820         wldev->dev = dev;
3821         wldev->wl = wl;
3822         b43_set_status(wldev, B43_STAT_UNINIT);
3823         wldev->bad_frames_preempt = modparam_bad_frames_preempt;
3824         tasklet_init(&wldev->isr_tasklet,
3825                      (void (*)(unsigned long))b43_interrupt_tasklet,
3826                      (unsigned long)wldev);
3827         INIT_LIST_HEAD(&wldev->list);
3828
3829         err = b43_wireless_core_attach(wldev);
3830         if (err)
3831                 goto err_kfree_wldev;
3832
3833         list_add(&wldev->list, &wl->devlist);
3834         wl->nr_devs++;
3835         ssb_set_drvdata(dev, wldev);
3836         b43_debugfs_add_device(wldev);
3837
3838       out:
3839         return err;
3840
3841       err_kfree_wldev:
3842         kfree(wldev);
3843         return err;
3844 }
3845
3846 static void b43_sprom_fixup(struct ssb_bus *bus)
3847 {
3848         /* boardflags workarounds */
3849         if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
3850             bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
3851                 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
3852         if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
3853             bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
3854                 bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
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                     IEEE80211_HW_RX_INCLUDES_FCS;
3883         hw->max_signal = 100;
3884         hw->max_rssi = -110;
3885         hw->max_noise = -110;
3886         hw->queues = 1;         /* FIXME: hardware has more queues */
3887         SET_IEEE80211_DEV(hw, dev->dev);
3888         if (is_valid_ether_addr(sprom->et1mac))
3889                 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
3890         else
3891                 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
3892
3893         /* Get and initialize struct b43_wl */
3894         wl = hw_to_b43_wl(hw);
3895         memset(wl, 0, sizeof(*wl));
3896         wl->hw = hw;
3897         spin_lock_init(&wl->irq_lock);
3898         spin_lock_init(&wl->leds_lock);
3899         mutex_init(&wl->mutex);
3900         INIT_LIST_HEAD(&wl->devlist);
3901
3902         ssb_set_devtypedata(dev, wl);
3903         b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
3904         err = 0;
3905       out:
3906         return err;
3907 }
3908
3909 static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
3910 {
3911         struct b43_wl *wl;
3912         int err;
3913         int first = 0;
3914
3915         wl = ssb_get_devtypedata(dev);
3916         if (!wl) {
3917                 /* Probing the first core. Must setup common struct b43_wl */
3918                 first = 1;
3919                 err = b43_wireless_init(dev);
3920                 if (err)
3921                         goto out;
3922                 wl = ssb_get_devtypedata(dev);
3923                 B43_WARN_ON(!wl);
3924         }
3925         err = b43_one_core_attach(dev, wl);
3926         if (err)
3927                 goto err_wireless_exit;
3928
3929         if (first) {
3930                 err = ieee80211_register_hw(wl->hw);
3931                 if (err)
3932                         goto err_one_core_detach;
3933         }
3934
3935       out:
3936         return err;
3937
3938       err_one_core_detach:
3939         b43_one_core_detach(dev);
3940       err_wireless_exit:
3941         if (first)
3942                 b43_wireless_exit(dev, wl);
3943         return err;
3944 }
3945
3946 static void b43_remove(struct ssb_device *dev)
3947 {
3948         struct b43_wl *wl = ssb_get_devtypedata(dev);
3949         struct b43_wldev *wldev = ssb_get_drvdata(dev);
3950
3951         B43_WARN_ON(!wl);
3952         if (wl->current_dev == wldev)
3953                 ieee80211_unregister_hw(wl->hw);
3954
3955         b43_one_core_detach(dev);
3956
3957         if (list_empty(&wl->devlist)) {
3958                 /* Last core on the chip unregistered.
3959                  * We can destroy common struct b43_wl.
3960                  */
3961                 b43_wireless_exit(dev, wl);
3962         }
3963 }
3964
3965 /* Perform a hardware reset. This can be called from any context. */
3966 void b43_controller_restart(struct b43_wldev *dev, const char *reason)
3967 {
3968         /* Must avoid requeueing, if we are in shutdown. */
3969         if (b43_status(dev) < B43_STAT_INITIALIZED)
3970                 return;
3971         b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
3972         queue_work(dev->wl->hw->workqueue, &dev->restart_work);
3973 }
3974
3975 #ifdef CONFIG_PM
3976
3977 static int b43_suspend(struct ssb_device *dev, pm_message_t state)
3978 {
3979         struct b43_wldev *wldev = ssb_get_drvdata(dev);
3980         struct b43_wl *wl = wldev->wl;
3981
3982         b43dbg(wl, "Suspending...\n");
3983
3984         mutex_lock(&wl->mutex);
3985         wldev->suspend_init_status = b43_status(wldev);
3986         if (wldev->suspend_init_status >= B43_STAT_STARTED)
3987                 b43_wireless_core_stop(wldev);
3988         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
3989                 b43_wireless_core_exit(wldev);
3990         mutex_unlock(&wl->mutex);
3991
3992         b43dbg(wl, "Device suspended.\n");
3993
3994         return 0;
3995 }
3996
3997 static int b43_resume(struct ssb_device *dev)
3998 {
3999         struct b43_wldev *wldev = ssb_get_drvdata(dev);
4000         struct b43_wl *wl = wldev->wl;
4001         int err = 0;
4002
4003         b43dbg(wl, "Resuming...\n");
4004
4005         mutex_lock(&wl->mutex);
4006         if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
4007                 err = b43_wireless_core_init(wldev);
4008                 if (err) {
4009                         b43err(wl, "Resume failed at core init\n");
4010                         goto out;
4011                 }
4012         }
4013         if (wldev->suspend_init_status >= B43_STAT_STARTED) {
4014                 err = b43_wireless_core_start(wldev);
4015                 if (err) {
4016                         b43_wireless_core_exit(wldev);
4017                         b43err(wl, "Resume failed at core start\n");
4018                         goto out;
4019                 }
4020         }
4021         mutex_unlock(&wl->mutex);
4022
4023         b43dbg(wl, "Device resumed.\n");
4024       out:
4025         return err;
4026 }
4027
4028 #else /* CONFIG_PM */
4029 # define b43_suspend    NULL
4030 # define b43_resume     NULL
4031 #endif /* CONFIG_PM */
4032
4033 static struct ssb_driver b43_ssb_driver = {
4034         .name           = KBUILD_MODNAME,
4035         .id_table       = b43_ssb_tbl,
4036         .probe          = b43_probe,
4037         .remove         = b43_remove,
4038         .suspend        = b43_suspend,
4039         .resume         = b43_resume,
4040 };
4041
4042 static int __init b43_init(void)
4043 {
4044         int err;
4045
4046         b43_debugfs_init();
4047         err = b43_pcmcia_init();
4048         if (err)
4049                 goto err_dfs_exit;
4050         err = ssb_driver_register(&b43_ssb_driver);
4051         if (err)
4052                 goto err_pcmcia_exit;
4053
4054         return err;
4055
4056 err_pcmcia_exit:
4057         b43_pcmcia_exit();
4058 err_dfs_exit:
4059         b43_debugfs_exit();
4060         return err;
4061 }
4062
4063 static void __exit b43_exit(void)
4064 {
4065         ssb_driver_unregister(&b43_ssb_driver);
4066         b43_pcmcia_exit();
4067         b43_debugfs_exit();
4068 }
4069
4070 module_init(b43_init)
4071 module_exit(b43_exit)