main.c revision d8be11ee95be9ec9eabfec9f635e0feac972369b
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 "pio.h" 50#include "sysfs.h" 51#include "xmit.h" 52#include "lo.h" 53#include "pcmcia.h" 54 55MODULE_DESCRIPTION("Broadcom B43 wireless driver"); 56MODULE_AUTHOR("Martin Langer"); 57MODULE_AUTHOR("Stefano Brivio"); 58MODULE_AUTHOR("Michael Buesch"); 59MODULE_LICENSE("GPL"); 60 61extern char *nvram_get(char *name); 62 63#if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO) 64static int modparam_pio; 65module_param_named(pio, modparam_pio, int, 0444); 66MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode"); 67#elif defined(CONFIG_B43_DMA) 68# define modparam_pio 0 69#elif defined(CONFIG_B43_PIO) 70# define modparam_pio 1 71#endif 72 73static int modparam_bad_frames_preempt; 74module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); 75MODULE_PARM_DESC(bad_frames_preempt, 76 "enable(1) / disable(0) Bad Frames Preemption"); 77 78static char modparam_fwpostfix[16]; 79module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); 80MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load."); 81 82static int modparam_hwpctl; 83module_param_named(hwpctl, modparam_hwpctl, int, 0444); 84MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)"); 85 86static int modparam_nohwcrypt; 87module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); 88MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); 89 90static const struct ssb_device_id b43_ssb_tbl[] = { 91 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5), 92 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6), 93 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7), 94 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9), 95 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10), 96 SSB_DEVTABLE_END 97}; 98 99MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl); 100 101/* Channel and ratetables are shared for all devices. 102 * They can't be const, because ieee80211 puts some precalculated 103 * data in there. This data is the same for all devices, so we don't 104 * get concurrency issues */ 105#define RATETAB_ENT(_rateid, _flags) \ 106 { \ 107 .rate = B43_RATE_TO_BASE100KBPS(_rateid), \ 108 .val = (_rateid), \ 109 .val2 = (_rateid), \ 110 .flags = (_flags), \ 111 } 112static struct ieee80211_rate __b43_ratetable[] = { 113 RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK), 114 RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2), 115 RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2), 116 RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2), 117 RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM), 118 RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM), 119 RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM), 120 RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM), 121 RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM), 122 RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM), 123 RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM), 124 RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM), 125}; 126 127#define b43_a_ratetable (__b43_ratetable + 4) 128#define b43_a_ratetable_size 8 129#define b43_b_ratetable (__b43_ratetable + 0) 130#define b43_b_ratetable_size 4 131#define b43_g_ratetable (__b43_ratetable + 0) 132#define b43_g_ratetable_size 12 133 134#define CHANTAB_ENT(_chanid, _freq) \ 135 { \ 136 .chan = (_chanid), \ 137 .freq = (_freq), \ 138 .val = (_chanid), \ 139 .flag = IEEE80211_CHAN_W_SCAN | \ 140 IEEE80211_CHAN_W_ACTIVE_SCAN | \ 141 IEEE80211_CHAN_W_IBSS, \ 142 .power_level = 0xFF, \ 143 .antenna_max = 0xFF, \ 144 } 145static struct ieee80211_channel b43_bg_chantable[] = { 146 CHANTAB_ENT(1, 2412), 147 CHANTAB_ENT(2, 2417), 148 CHANTAB_ENT(3, 2422), 149 CHANTAB_ENT(4, 2427), 150 CHANTAB_ENT(5, 2432), 151 CHANTAB_ENT(6, 2437), 152 CHANTAB_ENT(7, 2442), 153 CHANTAB_ENT(8, 2447), 154 CHANTAB_ENT(9, 2452), 155 CHANTAB_ENT(10, 2457), 156 CHANTAB_ENT(11, 2462), 157 CHANTAB_ENT(12, 2467), 158 CHANTAB_ENT(13, 2472), 159 CHANTAB_ENT(14, 2484), 160}; 161 162#define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable) 163static struct ieee80211_channel b43_a_chantable[] = { 164 CHANTAB_ENT(36, 5180), 165 CHANTAB_ENT(40, 5200), 166 CHANTAB_ENT(44, 5220), 167 CHANTAB_ENT(48, 5240), 168 CHANTAB_ENT(52, 5260), 169 CHANTAB_ENT(56, 5280), 170 CHANTAB_ENT(60, 5300), 171 CHANTAB_ENT(64, 5320), 172 CHANTAB_ENT(149, 5745), 173 CHANTAB_ENT(153, 5765), 174 CHANTAB_ENT(157, 5785), 175 CHANTAB_ENT(161, 5805), 176 CHANTAB_ENT(165, 5825), 177}; 178 179#define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable) 180 181static void b43_wireless_core_exit(struct b43_wldev *dev); 182static int b43_wireless_core_init(struct b43_wldev *dev); 183static void b43_wireless_core_stop(struct b43_wldev *dev); 184static int b43_wireless_core_start(struct b43_wldev *dev); 185 186static int b43_ratelimit(struct b43_wl *wl) 187{ 188 if (!wl || !wl->current_dev) 189 return 1; 190 if (b43_status(wl->current_dev) < B43_STAT_STARTED) 191 return 1; 192 /* We are up and running. 193 * Ratelimit the messages to avoid DoS over the net. */ 194 return net_ratelimit(); 195} 196 197void b43info(struct b43_wl *wl, const char *fmt, ...) 198{ 199 va_list args; 200 201 if (!b43_ratelimit(wl)) 202 return; 203 va_start(args, fmt); 204 printk(KERN_INFO "b43-%s: ", 205 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); 206 vprintk(fmt, args); 207 va_end(args); 208} 209 210void b43err(struct b43_wl *wl, const char *fmt, ...) 211{ 212 va_list args; 213 214 if (!b43_ratelimit(wl)) 215 return; 216 va_start(args, fmt); 217 printk(KERN_ERR "b43-%s ERROR: ", 218 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); 219 vprintk(fmt, args); 220 va_end(args); 221} 222 223void b43warn(struct b43_wl *wl, const char *fmt, ...) 224{ 225 va_list args; 226 227 if (!b43_ratelimit(wl)) 228 return; 229 va_start(args, fmt); 230 printk(KERN_WARNING "b43-%s warning: ", 231 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); 232 vprintk(fmt, args); 233 va_end(args); 234} 235 236#if B43_DEBUG 237void b43dbg(struct b43_wl *wl, const char *fmt, ...) 238{ 239 va_list args; 240 241 va_start(args, fmt); 242 printk(KERN_DEBUG "b43-%s debug: ", 243 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan"); 244 vprintk(fmt, args); 245 va_end(args); 246} 247#endif /* DEBUG */ 248 249static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val) 250{ 251 u32 macctl; 252 253 B43_WARN_ON(offset % 4 != 0); 254 255 macctl = b43_read32(dev, B43_MMIO_MACCTL); 256 if (macctl & B43_MACCTL_BE) 257 val = swab32(val); 258 259 b43_write32(dev, B43_MMIO_RAM_CONTROL, offset); 260 mmiowb(); 261 b43_write32(dev, B43_MMIO_RAM_DATA, val); 262} 263 264static inline 265 void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset) 266{ 267 u32 control; 268 269 /* "offset" is the WORD offset. */ 270 271 control = routing; 272 control <<= 16; 273 control |= offset; 274 b43_write32(dev, B43_MMIO_SHM_CONTROL, control); 275} 276 277u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) 278{ 279 u32 ret; 280 281 if (routing == B43_SHM_SHARED) { 282 B43_WARN_ON(offset & 0x0001); 283 if (offset & 0x0003) { 284 /* Unaligned access */ 285 b43_shm_control_word(dev, routing, offset >> 2); 286 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); 287 ret <<= 16; 288 b43_shm_control_word(dev, routing, (offset >> 2) + 1); 289 ret |= b43_read16(dev, B43_MMIO_SHM_DATA); 290 291 return ret; 292 } 293 offset >>= 2; 294 } 295 b43_shm_control_word(dev, routing, offset); 296 ret = b43_read32(dev, B43_MMIO_SHM_DATA); 297 298 return ret; 299} 300 301u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset) 302{ 303 u16 ret; 304 305 if (routing == B43_SHM_SHARED) { 306 B43_WARN_ON(offset & 0x0001); 307 if (offset & 0x0003) { 308 /* Unaligned access */ 309 b43_shm_control_word(dev, routing, offset >> 2); 310 ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED); 311 312 return ret; 313 } 314 offset >>= 2; 315 } 316 b43_shm_control_word(dev, routing, offset); 317 ret = b43_read16(dev, B43_MMIO_SHM_DATA); 318 319 return ret; 320} 321 322void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) 323{ 324 if (routing == B43_SHM_SHARED) { 325 B43_WARN_ON(offset & 0x0001); 326 if (offset & 0x0003) { 327 /* Unaligned access */ 328 b43_shm_control_word(dev, routing, offset >> 2); 329 mmiowb(); 330 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, 331 (value >> 16) & 0xffff); 332 mmiowb(); 333 b43_shm_control_word(dev, routing, (offset >> 2) + 1); 334 mmiowb(); 335 b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff); 336 return; 337 } 338 offset >>= 2; 339 } 340 b43_shm_control_word(dev, routing, offset); 341 mmiowb(); 342 b43_write32(dev, B43_MMIO_SHM_DATA, value); 343} 344 345void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) 346{ 347 if (routing == B43_SHM_SHARED) { 348 B43_WARN_ON(offset & 0x0001); 349 if (offset & 0x0003) { 350 /* Unaligned access */ 351 b43_shm_control_word(dev, routing, offset >> 2); 352 mmiowb(); 353 b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value); 354 return; 355 } 356 offset >>= 2; 357 } 358 b43_shm_control_word(dev, routing, offset); 359 mmiowb(); 360 b43_write16(dev, B43_MMIO_SHM_DATA, value); 361} 362 363/* Read HostFlags */ 364u32 b43_hf_read(struct b43_wldev * dev) 365{ 366 u32 ret; 367 368 ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI); 369 ret <<= 16; 370 ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO); 371 372 return ret; 373} 374 375/* Write HostFlags */ 376void b43_hf_write(struct b43_wldev *dev, u32 value) 377{ 378 b43_shm_write16(dev, B43_SHM_SHARED, 379 B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF)); 380 b43_shm_write16(dev, B43_SHM_SHARED, 381 B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16)); 382} 383 384void b43_tsf_read(struct b43_wldev *dev, u64 * tsf) 385{ 386 /* We need to be careful. As we read the TSF from multiple 387 * registers, we should take care of register overflows. 388 * In theory, the whole tsf read process should be atomic. 389 * We try to be atomic here, by restaring the read process, 390 * if any of the high registers changed (overflew). 391 */ 392 if (dev->dev->id.revision >= 3) { 393 u32 low, high, high2; 394 395 do { 396 high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); 397 low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW); 398 high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH); 399 } while (unlikely(high != high2)); 400 401 *tsf = high; 402 *tsf <<= 32; 403 *tsf |= low; 404 } else { 405 u64 tmp; 406 u16 v0, v1, v2, v3; 407 u16 test1, test2, test3; 408 409 do { 410 v3 = b43_read16(dev, B43_MMIO_TSF_3); 411 v2 = b43_read16(dev, B43_MMIO_TSF_2); 412 v1 = b43_read16(dev, B43_MMIO_TSF_1); 413 v0 = b43_read16(dev, B43_MMIO_TSF_0); 414 415 test3 = b43_read16(dev, B43_MMIO_TSF_3); 416 test2 = b43_read16(dev, B43_MMIO_TSF_2); 417 test1 = b43_read16(dev, B43_MMIO_TSF_1); 418 } while (v3 != test3 || v2 != test2 || v1 != test1); 419 420 *tsf = v3; 421 *tsf <<= 48; 422 tmp = v2; 423 tmp <<= 32; 424 *tsf |= tmp; 425 tmp = v1; 426 tmp <<= 16; 427 *tsf |= tmp; 428 *tsf |= v0; 429 } 430} 431 432static void b43_time_lock(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 443static void b43_time_unlock(struct b43_wldev *dev) 444{ 445 u32 macctl; 446 447 macctl = b43_read32(dev, B43_MMIO_MACCTL); 448 macctl &= ~B43_MACCTL_TBTTHOLD; 449 b43_write32(dev, B43_MMIO_MACCTL, macctl); 450 /* Commit the write */ 451 b43_read32(dev, B43_MMIO_MACCTL); 452} 453 454static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf) 455{ 456 /* Be careful with the in-progress timer. 457 * First zero out the low register, so we have a full 458 * register-overflow duration to complete the operation. 459 */ 460 if (dev->dev->id.revision >= 3) { 461 u32 lo = (tsf & 0x00000000FFFFFFFFULL); 462 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32; 463 464 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0); 465 mmiowb(); 466 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi); 467 mmiowb(); 468 b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo); 469 } else { 470 u16 v0 = (tsf & 0x000000000000FFFFULL); 471 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16; 472 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32; 473 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48; 474 475 b43_write16(dev, B43_MMIO_TSF_0, 0); 476 mmiowb(); 477 b43_write16(dev, B43_MMIO_TSF_3, v3); 478 mmiowb(); 479 b43_write16(dev, B43_MMIO_TSF_2, v2); 480 mmiowb(); 481 b43_write16(dev, B43_MMIO_TSF_1, v1); 482 mmiowb(); 483 b43_write16(dev, B43_MMIO_TSF_0, v0); 484 } 485} 486 487void b43_tsf_write(struct b43_wldev *dev, u64 tsf) 488{ 489 b43_time_lock(dev); 490 b43_tsf_write_locked(dev, tsf); 491 b43_time_unlock(dev); 492} 493 494static 495void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac) 496{ 497 static const u8 zero_addr[ETH_ALEN] = { 0 }; 498 u16 data; 499 500 if (!mac) 501 mac = zero_addr; 502 503 offset |= 0x0020; 504 b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset); 505 506 data = mac[0]; 507 data |= mac[1] << 8; 508 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); 509 data = mac[2]; 510 data |= mac[3] << 8; 511 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); 512 data = mac[4]; 513 data |= mac[5] << 8; 514 b43_write16(dev, B43_MMIO_MACFILTER_DATA, data); 515} 516 517static void b43_write_mac_bssid_templates(struct b43_wldev *dev) 518{ 519 const u8 *mac; 520 const u8 *bssid; 521 u8 mac_bssid[ETH_ALEN * 2]; 522 int i; 523 u32 tmp; 524 525 bssid = dev->wl->bssid; 526 mac = dev->wl->mac_addr; 527 528 b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid); 529 530 memcpy(mac_bssid, mac, ETH_ALEN); 531 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN); 532 533 /* Write our MAC address and BSSID to template ram */ 534 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) { 535 tmp = (u32) (mac_bssid[i + 0]); 536 tmp |= (u32) (mac_bssid[i + 1]) << 8; 537 tmp |= (u32) (mac_bssid[i + 2]) << 16; 538 tmp |= (u32) (mac_bssid[i + 3]) << 24; 539 b43_ram_write(dev, 0x20 + i, tmp); 540 } 541} 542 543static void b43_upload_card_macaddress(struct b43_wldev *dev) 544{ 545 b43_write_mac_bssid_templates(dev); 546 b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr); 547} 548 549static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time) 550{ 551 /* slot_time is in usec. */ 552 if (dev->phy.type != B43_PHYTYPE_G) 553 return; 554 b43_write16(dev, 0x684, 510 + slot_time); 555 b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time); 556} 557 558static void b43_short_slot_timing_enable(struct b43_wldev *dev) 559{ 560 b43_set_slot_time(dev, 9); 561 dev->short_slot = 1; 562} 563 564static void b43_short_slot_timing_disable(struct b43_wldev *dev) 565{ 566 b43_set_slot_time(dev, 20); 567 dev->short_slot = 0; 568} 569 570/* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable. 571 * Returns the _previously_ enabled IRQ mask. 572 */ 573static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask) 574{ 575 u32 old_mask; 576 577 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); 578 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask); 579 580 return old_mask; 581} 582 583/* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable. 584 * Returns the _previously_ enabled IRQ mask. 585 */ 586static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask) 587{ 588 u32 old_mask; 589 590 old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); 591 b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask); 592 593 return old_mask; 594} 595 596/* Synchronize IRQ top- and bottom-half. 597 * IRQs must be masked before calling this. 598 * This must not be called with the irq_lock held. 599 */ 600static void b43_synchronize_irq(struct b43_wldev *dev) 601{ 602 synchronize_irq(dev->dev->irq); 603 tasklet_kill(&dev->isr_tasklet); 604} 605 606/* DummyTransmission function, as documented on 607 * http://bcm-specs.sipsolutions.net/DummyTransmission 608 */ 609void b43_dummy_transmission(struct b43_wldev *dev) 610{ 611 struct b43_phy *phy = &dev->phy; 612 unsigned int i, max_loop; 613 u16 value; 614 u32 buffer[5] = { 615 0x00000000, 616 0x00D40000, 617 0x00000000, 618 0x01000000, 619 0x00000000, 620 }; 621 622 switch (phy->type) { 623 case B43_PHYTYPE_A: 624 max_loop = 0x1E; 625 buffer[0] = 0x000201CC; 626 break; 627 case B43_PHYTYPE_B: 628 case B43_PHYTYPE_G: 629 max_loop = 0xFA; 630 buffer[0] = 0x000B846E; 631 break; 632 default: 633 B43_WARN_ON(1); 634 return; 635 } 636 637 for (i = 0; i < 5; i++) 638 b43_ram_write(dev, i * 4, buffer[i]); 639 640 /* Commit writes */ 641 b43_read32(dev, B43_MMIO_MACCTL); 642 643 b43_write16(dev, 0x0568, 0x0000); 644 b43_write16(dev, 0x07C0, 0x0000); 645 value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0); 646 b43_write16(dev, 0x050C, value); 647 b43_write16(dev, 0x0508, 0x0000); 648 b43_write16(dev, 0x050A, 0x0000); 649 b43_write16(dev, 0x054C, 0x0000); 650 b43_write16(dev, 0x056A, 0x0014); 651 b43_write16(dev, 0x0568, 0x0826); 652 b43_write16(dev, 0x0500, 0x0000); 653 b43_write16(dev, 0x0502, 0x0030); 654 655 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) 656 b43_radio_write16(dev, 0x0051, 0x0017); 657 for (i = 0x00; i < max_loop; i++) { 658 value = b43_read16(dev, 0x050E); 659 if (value & 0x0080) 660 break; 661 udelay(10); 662 } 663 for (i = 0x00; i < 0x0A; i++) { 664 value = b43_read16(dev, 0x050E); 665 if (value & 0x0400) 666 break; 667 udelay(10); 668 } 669 for (i = 0x00; i < 0x0A; i++) { 670 value = b43_read16(dev, 0x0690); 671 if (!(value & 0x0100)) 672 break; 673 udelay(10); 674 } 675 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) 676 b43_radio_write16(dev, 0x0051, 0x0037); 677} 678 679static void key_write(struct b43_wldev *dev, 680 u8 index, u8 algorithm, const u8 * key) 681{ 682 unsigned int i; 683 u32 offset; 684 u16 value; 685 u16 kidx; 686 687 /* Key index/algo block */ 688 kidx = b43_kidx_to_fw(dev, index); 689 value = ((kidx << 4) | algorithm); 690 b43_shm_write16(dev, B43_SHM_SHARED, 691 B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value); 692 693 /* Write the key to the Key Table Pointer offset */ 694 offset = dev->ktp + (index * B43_SEC_KEYSIZE); 695 for (i = 0; i < B43_SEC_KEYSIZE; i += 2) { 696 value = key[i]; 697 value |= (u16) (key[i + 1]) << 8; 698 b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value); 699 } 700} 701 702static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr) 703{ 704 u32 addrtmp[2] = { 0, 0, }; 705 u8 per_sta_keys_start = 8; 706 707 if (b43_new_kidx_api(dev)) 708 per_sta_keys_start = 4; 709 710 B43_WARN_ON(index < per_sta_keys_start); 711 /* We have two default TX keys and possibly two default RX keys. 712 * Physical mac 0 is mapped to physical key 4 or 8, depending 713 * on the firmware version. 714 * So we must adjust the index here. 715 */ 716 index -= per_sta_keys_start; 717 718 if (addr) { 719 addrtmp[0] = addr[0]; 720 addrtmp[0] |= ((u32) (addr[1]) << 8); 721 addrtmp[0] |= ((u32) (addr[2]) << 16); 722 addrtmp[0] |= ((u32) (addr[3]) << 24); 723 addrtmp[1] = addr[4]; 724 addrtmp[1] |= ((u32) (addr[5]) << 8); 725 } 726 727 if (dev->dev->id.revision >= 5) { 728 /* Receive match transmitter address mechanism */ 729 b43_shm_write32(dev, B43_SHM_RCMTA, 730 (index * 2) + 0, addrtmp[0]); 731 b43_shm_write16(dev, B43_SHM_RCMTA, 732 (index * 2) + 1, addrtmp[1]); 733 } else { 734 /* RXE (Receive Engine) and 735 * PSM (Programmable State Machine) mechanism 736 */ 737 if (index < 8) { 738 /* TODO write to RCM 16, 19, 22 and 25 */ 739 } else { 740 b43_shm_write32(dev, B43_SHM_SHARED, 741 B43_SHM_SH_PSM + (index * 6) + 0, 742 addrtmp[0]); 743 b43_shm_write16(dev, B43_SHM_SHARED, 744 B43_SHM_SH_PSM + (index * 6) + 4, 745 addrtmp[1]); 746 } 747 } 748} 749 750static void do_key_write(struct b43_wldev *dev, 751 u8 index, u8 algorithm, 752 const u8 * key, size_t key_len, const u8 * mac_addr) 753{ 754 u8 buf[B43_SEC_KEYSIZE] = { 0, }; 755 u8 per_sta_keys_start = 8; 756 757 if (b43_new_kidx_api(dev)) 758 per_sta_keys_start = 4; 759 760 B43_WARN_ON(index >= dev->max_nr_keys); 761 B43_WARN_ON(key_len > B43_SEC_KEYSIZE); 762 763 if (index >= per_sta_keys_start) 764 keymac_write(dev, index, NULL); /* First zero out mac. */ 765 if (key) 766 memcpy(buf, key, key_len); 767 key_write(dev, index, algorithm, buf); 768 if (index >= per_sta_keys_start) 769 keymac_write(dev, index, mac_addr); 770 771 dev->key[index].algorithm = algorithm; 772} 773 774static int b43_key_write(struct b43_wldev *dev, 775 int index, u8 algorithm, 776 const u8 * key, size_t key_len, 777 const u8 * mac_addr, 778 struct ieee80211_key_conf *keyconf) 779{ 780 int i; 781 int sta_keys_start; 782 783 if (key_len > B43_SEC_KEYSIZE) 784 return -EINVAL; 785 for (i = 0; i < dev->max_nr_keys; i++) { 786 /* Check that we don't already have this key. */ 787 B43_WARN_ON(dev->key[i].keyconf == keyconf); 788 } 789 if (index < 0) { 790 /* Either pairwise key or address is 00:00:00:00:00:00 791 * for transmit-only keys. Search the index. */ 792 if (b43_new_kidx_api(dev)) 793 sta_keys_start = 4; 794 else 795 sta_keys_start = 8; 796 for (i = sta_keys_start; i < dev->max_nr_keys; i++) { 797 if (!dev->key[i].keyconf) { 798 /* found empty */ 799 index = i; 800 break; 801 } 802 } 803 if (index < 0) { 804 b43err(dev->wl, "Out of hardware key memory\n"); 805 return -ENOSPC; 806 } 807 } else 808 B43_WARN_ON(index > 3); 809 810 do_key_write(dev, index, algorithm, key, key_len, mac_addr); 811 if ((index <= 3) && !b43_new_kidx_api(dev)) { 812 /* Default RX key */ 813 B43_WARN_ON(mac_addr); 814 do_key_write(dev, index + 4, algorithm, key, key_len, NULL); 815 } 816 keyconf->hw_key_idx = index; 817 dev->key[index].keyconf = keyconf; 818 819 return 0; 820} 821 822static int b43_key_clear(struct b43_wldev *dev, int index) 823{ 824 if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys))) 825 return -EINVAL; 826 do_key_write(dev, index, B43_SEC_ALGO_NONE, 827 NULL, B43_SEC_KEYSIZE, NULL); 828 if ((index <= 3) && !b43_new_kidx_api(dev)) { 829 do_key_write(dev, index + 4, B43_SEC_ALGO_NONE, 830 NULL, B43_SEC_KEYSIZE, NULL); 831 } 832 dev->key[index].keyconf = NULL; 833 834 return 0; 835} 836 837static void b43_clear_keys(struct b43_wldev *dev) 838{ 839 int i; 840 841 for (i = 0; i < dev->max_nr_keys; i++) 842 b43_key_clear(dev, i); 843} 844 845void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags) 846{ 847 u32 macctl; 848 u16 ucstat; 849 bool hwps; 850 bool awake; 851 int i; 852 853 B43_WARN_ON((ps_flags & B43_PS_ENABLED) && 854 (ps_flags & B43_PS_DISABLED)); 855 B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP)); 856 857 if (ps_flags & B43_PS_ENABLED) { 858 hwps = 1; 859 } else if (ps_flags & B43_PS_DISABLED) { 860 hwps = 0; 861 } else { 862 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc 863 // and thus is not an AP and we are associated, set bit 25 864 } 865 if (ps_flags & B43_PS_AWAKE) { 866 awake = 1; 867 } else if (ps_flags & B43_PS_ASLEEP) { 868 awake = 0; 869 } else { 870 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME, 871 // or we are associated, or FIXME, or the latest PS-Poll packet sent was 872 // successful, set bit26 873 } 874 875/* FIXME: For now we force awake-on and hwps-off */ 876 hwps = 0; 877 awake = 1; 878 879 macctl = b43_read32(dev, B43_MMIO_MACCTL); 880 if (hwps) 881 macctl |= B43_MACCTL_HWPS; 882 else 883 macctl &= ~B43_MACCTL_HWPS; 884 if (awake) 885 macctl |= B43_MACCTL_AWAKE; 886 else 887 macctl &= ~B43_MACCTL_AWAKE; 888 b43_write32(dev, B43_MMIO_MACCTL, macctl); 889 /* Commit write */ 890 b43_read32(dev, B43_MMIO_MACCTL); 891 if (awake && dev->dev->id.revision >= 5) { 892 /* Wait for the microcode to wake up. */ 893 for (i = 0; i < 100; i++) { 894 ucstat = b43_shm_read16(dev, B43_SHM_SHARED, 895 B43_SHM_SH_UCODESTAT); 896 if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP) 897 break; 898 udelay(10); 899 } 900 } 901} 902 903/* Turn the Analog ON/OFF */ 904static void b43_switch_analog(struct b43_wldev *dev, int on) 905{ 906 b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4); 907} 908 909void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags) 910{ 911 u32 tmslow; 912 u32 macctl; 913 914 flags |= B43_TMSLOW_PHYCLKEN; 915 flags |= B43_TMSLOW_PHYRESET; 916 ssb_device_enable(dev->dev, flags); 917 msleep(2); /* Wait for the PLL to turn on. */ 918 919 /* Now take the PHY out of Reset again */ 920 tmslow = ssb_read32(dev->dev, SSB_TMSLOW); 921 tmslow |= SSB_TMSLOW_FGC; 922 tmslow &= ~B43_TMSLOW_PHYRESET; 923 ssb_write32(dev->dev, SSB_TMSLOW, tmslow); 924 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ 925 msleep(1); 926 tmslow &= ~SSB_TMSLOW_FGC; 927 ssb_write32(dev->dev, SSB_TMSLOW, tmslow); 928 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ 929 msleep(1); 930 931 /* Turn Analog ON */ 932 b43_switch_analog(dev, 1); 933 934 macctl = b43_read32(dev, B43_MMIO_MACCTL); 935 macctl &= ~B43_MACCTL_GMODE; 936 if (flags & B43_TMSLOW_GMODE) 937 macctl |= B43_MACCTL_GMODE; 938 macctl |= B43_MACCTL_IHR_ENABLED; 939 b43_write32(dev, B43_MMIO_MACCTL, macctl); 940} 941 942static void handle_irq_transmit_status(struct b43_wldev *dev) 943{ 944 u32 v0, v1; 945 u16 tmp; 946 struct b43_txstatus stat; 947 948 while (1) { 949 v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0); 950 if (!(v0 & 0x00000001)) 951 break; 952 v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1); 953 954 stat.cookie = (v0 >> 16); 955 stat.seq = (v1 & 0x0000FFFF); 956 stat.phy_stat = ((v1 & 0x00FF0000) >> 16); 957 tmp = (v0 & 0x0000FFFF); 958 stat.frame_count = ((tmp & 0xF000) >> 12); 959 stat.rts_count = ((tmp & 0x0F00) >> 8); 960 stat.supp_reason = ((tmp & 0x001C) >> 2); 961 stat.pm_indicated = !!(tmp & 0x0080); 962 stat.intermediate = !!(tmp & 0x0040); 963 stat.for_ampdu = !!(tmp & 0x0020); 964 stat.acked = !!(tmp & 0x0002); 965 966 b43_handle_txstatus(dev, &stat); 967 } 968} 969 970static void drain_txstatus_queue(struct b43_wldev *dev) 971{ 972 u32 dummy; 973 974 if (dev->dev->id.revision < 5) 975 return; 976 /* Read all entries from the microcode TXstatus FIFO 977 * and throw them away. 978 */ 979 while (1) { 980 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0); 981 if (!(dummy & 0x00000001)) 982 break; 983 dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1); 984 } 985} 986 987static u32 b43_jssi_read(struct b43_wldev *dev) 988{ 989 u32 val = 0; 990 991 val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A); 992 val <<= 16; 993 val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088); 994 995 return val; 996} 997 998static void b43_jssi_write(struct b43_wldev *dev, u32 jssi) 999{ 1000 b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF)); 1001 b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16); 1002} 1003 1004static void b43_generate_noise_sample(struct b43_wldev *dev) 1005{ 1006 b43_jssi_write(dev, 0x7F7F7F7F); 1007 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, 1008 b43_read32(dev, B43_MMIO_STATUS2_BITFIELD) 1009 | (1 << 4)); 1010 B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel); 1011} 1012 1013static void b43_calculate_link_quality(struct b43_wldev *dev) 1014{ 1015 /* Top half of Link Quality calculation. */ 1016 1017 if (dev->noisecalc.calculation_running) 1018 return; 1019 dev->noisecalc.channel_at_start = dev->phy.channel; 1020 dev->noisecalc.calculation_running = 1; 1021 dev->noisecalc.nr_samples = 0; 1022 1023 b43_generate_noise_sample(dev); 1024} 1025 1026static void handle_irq_noise(struct b43_wldev *dev) 1027{ 1028 struct b43_phy *phy = &dev->phy; 1029 u16 tmp; 1030 u8 noise[4]; 1031 u8 i, j; 1032 s32 average; 1033 1034 /* Bottom half of Link Quality calculation. */ 1035 1036 B43_WARN_ON(!dev->noisecalc.calculation_running); 1037 if (dev->noisecalc.channel_at_start != phy->channel) 1038 goto drop_calculation; 1039 *((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev)); 1040 if (noise[0] == 0x7F || noise[1] == 0x7F || 1041 noise[2] == 0x7F || noise[3] == 0x7F) 1042 goto generate_new; 1043 1044 /* Get the noise samples. */ 1045 B43_WARN_ON(dev->noisecalc.nr_samples >= 8); 1046 i = dev->noisecalc.nr_samples; 1047 noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 1048 noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 1049 noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 1050 noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 1051 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; 1052 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; 1053 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; 1054 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; 1055 dev->noisecalc.nr_samples++; 1056 if (dev->noisecalc.nr_samples == 8) { 1057 /* Calculate the Link Quality by the noise samples. */ 1058 average = 0; 1059 for (i = 0; i < 8; i++) { 1060 for (j = 0; j < 4; j++) 1061 average += dev->noisecalc.samples[i][j]; 1062 } 1063 average /= (8 * 4); 1064 average *= 125; 1065 average += 64; 1066 average /= 128; 1067 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C); 1068 tmp = (tmp / 128) & 0x1F; 1069 if (tmp >= 8) 1070 average += 2; 1071 else 1072 average -= 25; 1073 if (tmp == 8) 1074 average -= 72; 1075 else 1076 average -= 48; 1077 1078 dev->stats.link_noise = average; 1079 drop_calculation: 1080 dev->noisecalc.calculation_running = 0; 1081 return; 1082 } 1083 generate_new: 1084 b43_generate_noise_sample(dev); 1085} 1086 1087static void handle_irq_tbtt_indication(struct b43_wldev *dev) 1088{ 1089 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) { 1090 ///TODO: PS TBTT 1091 } else { 1092 if (1 /*FIXME: the last PSpoll frame was sent successfully */ ) 1093 b43_power_saving_ctl_bits(dev, 0); 1094 } 1095 dev->reg124_set_0x4 = 0; 1096 if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS)) 1097 dev->reg124_set_0x4 = 1; 1098} 1099 1100static void handle_irq_atim_end(struct b43_wldev *dev) 1101{ 1102 if (!dev->reg124_set_0x4 /*FIXME rename this variable */ ) 1103 return; 1104 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, 1105 b43_read32(dev, B43_MMIO_STATUS2_BITFIELD) 1106 | 0x4); 1107} 1108 1109static void handle_irq_pmq(struct b43_wldev *dev) 1110{ 1111 u32 tmp; 1112 1113 //TODO: AP mode. 1114 1115 while (1) { 1116 tmp = b43_read32(dev, B43_MMIO_PS_STATUS); 1117 if (!(tmp & 0x00000008)) 1118 break; 1119 } 1120 /* 16bit write is odd, but correct. */ 1121 b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002); 1122} 1123 1124static void b43_write_template_common(struct b43_wldev *dev, 1125 const u8 * data, u16 size, 1126 u16 ram_offset, 1127 u16 shm_size_offset, u8 rate) 1128{ 1129 u32 i, tmp; 1130 struct b43_plcp_hdr4 plcp; 1131 1132 plcp.data = 0; 1133 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); 1134 b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data)); 1135 ram_offset += sizeof(u32); 1136 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet. 1137 * So leave the first two bytes of the next write blank. 1138 */ 1139 tmp = (u32) (data[0]) << 16; 1140 tmp |= (u32) (data[1]) << 24; 1141 b43_ram_write(dev, ram_offset, tmp); 1142 ram_offset += sizeof(u32); 1143 for (i = 2; i < size; i += sizeof(u32)) { 1144 tmp = (u32) (data[i + 0]); 1145 if (i + 1 < size) 1146 tmp |= (u32) (data[i + 1]) << 8; 1147 if (i + 2 < size) 1148 tmp |= (u32) (data[i + 2]) << 16; 1149 if (i + 3 < size) 1150 tmp |= (u32) (data[i + 3]) << 24; 1151 b43_ram_write(dev, ram_offset + i - 2, tmp); 1152 } 1153 b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset, 1154 size + sizeof(struct b43_plcp_hdr6)); 1155} 1156 1157static void b43_write_beacon_template(struct b43_wldev *dev, 1158 u16 ram_offset, 1159 u16 shm_size_offset, u8 rate) 1160{ 1161 int len; 1162 const u8 *data; 1163 1164 B43_WARN_ON(!dev->cached_beacon); 1165 len = min((size_t) dev->cached_beacon->len, 1166 0x200 - sizeof(struct b43_plcp_hdr6)); 1167 data = (const u8 *)(dev->cached_beacon->data); 1168 b43_write_template_common(dev, data, 1169 len, ram_offset, shm_size_offset, rate); 1170} 1171 1172static void b43_write_probe_resp_plcp(struct b43_wldev *dev, 1173 u16 shm_offset, u16 size, u8 rate) 1174{ 1175 struct b43_plcp_hdr4 plcp; 1176 u32 tmp; 1177 __le16 dur; 1178 1179 plcp.data = 0; 1180 b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); 1181 dur = ieee80211_generic_frame_duration(dev->wl->hw, 1182 dev->wl->if_id, size, 1183 B43_RATE_TO_BASE100KBPS(rate)); 1184 /* Write PLCP in two parts and timing for packet transfer */ 1185 tmp = le32_to_cpu(plcp.data); 1186 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF); 1187 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16); 1188 b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur)); 1189} 1190 1191/* Instead of using custom probe response template, this function 1192 * just patches custom beacon template by: 1193 * 1) Changing packet type 1194 * 2) Patching duration field 1195 * 3) Stripping TIM 1196 */ 1197static u8 *b43_generate_probe_resp(struct b43_wldev *dev, 1198 u16 * dest_size, u8 rate) 1199{ 1200 const u8 *src_data; 1201 u8 *dest_data; 1202 u16 src_size, elem_size, src_pos, dest_pos; 1203 __le16 dur; 1204 struct ieee80211_hdr *hdr; 1205 1206 B43_WARN_ON(!dev->cached_beacon); 1207 src_size = dev->cached_beacon->len; 1208 src_data = (const u8 *)dev->cached_beacon->data; 1209 1210 if (unlikely(src_size < 0x24)) { 1211 b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n"); 1212 return NULL; 1213 } 1214 1215 dest_data = kmalloc(src_size, GFP_ATOMIC); 1216 if (unlikely(!dest_data)) 1217 return NULL; 1218 1219 /* 0x24 is offset of first variable-len Information-Element 1220 * in beacon frame. 1221 */ 1222 memcpy(dest_data, src_data, 0x24); 1223 src_pos = dest_pos = 0x24; 1224 for (; src_pos < src_size - 2; src_pos += elem_size) { 1225 elem_size = src_data[src_pos + 1] + 2; 1226 if (src_data[src_pos] != 0x05) { /* TIM */ 1227 memcpy(dest_data + dest_pos, src_data + src_pos, 1228 elem_size); 1229 dest_pos += elem_size; 1230 } 1231 } 1232 *dest_size = dest_pos; 1233 hdr = (struct ieee80211_hdr *)dest_data; 1234 1235 /* Set the frame control. */ 1236 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1237 IEEE80211_STYPE_PROBE_RESP); 1238 dur = ieee80211_generic_frame_duration(dev->wl->hw, 1239 dev->wl->if_id, *dest_size, 1240 B43_RATE_TO_BASE100KBPS(rate)); 1241 hdr->duration_id = dur; 1242 1243 return dest_data; 1244} 1245 1246static void b43_write_probe_resp_template(struct b43_wldev *dev, 1247 u16 ram_offset, 1248 u16 shm_size_offset, u8 rate) 1249{ 1250 u8 *probe_resp_data; 1251 u16 size; 1252 1253 B43_WARN_ON(!dev->cached_beacon); 1254 size = dev->cached_beacon->len; 1255 probe_resp_data = b43_generate_probe_resp(dev, &size, rate); 1256 if (unlikely(!probe_resp_data)) 1257 return; 1258 1259 /* Looks like PLCP headers plus packet timings are stored for 1260 * all possible basic rates 1261 */ 1262 b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB); 1263 b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB); 1264 b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB); 1265 b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB); 1266 1267 size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6)); 1268 b43_write_template_common(dev, probe_resp_data, 1269 size, ram_offset, shm_size_offset, rate); 1270 kfree(probe_resp_data); 1271} 1272 1273static int b43_refresh_cached_beacon(struct b43_wldev *dev, 1274 struct sk_buff *beacon) 1275{ 1276 if (dev->cached_beacon) 1277 kfree_skb(dev->cached_beacon); 1278 dev->cached_beacon = beacon; 1279 1280 return 0; 1281} 1282 1283static void b43_update_templates(struct b43_wldev *dev) 1284{ 1285 u32 status; 1286 1287 B43_WARN_ON(!dev->cached_beacon); 1288 1289 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB); 1290 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB); 1291 b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB); 1292 1293 status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD); 1294 status |= 0x03; 1295 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); 1296} 1297 1298static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon) 1299{ 1300 int err; 1301 1302 err = b43_refresh_cached_beacon(dev, beacon); 1303 if (unlikely(err)) 1304 return; 1305 b43_update_templates(dev); 1306} 1307 1308static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len) 1309{ 1310 u32 tmp; 1311 u16 i, len; 1312 1313 len = min((u16) ssid_len, (u16) 0x100); 1314 for (i = 0; i < len; i += sizeof(u32)) { 1315 tmp = (u32) (ssid[i + 0]); 1316 if (i + 1 < len) 1317 tmp |= (u32) (ssid[i + 1]) << 8; 1318 if (i + 2 < len) 1319 tmp |= (u32) (ssid[i + 2]) << 16; 1320 if (i + 3 < len) 1321 tmp |= (u32) (ssid[i + 3]) << 24; 1322 b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp); 1323 } 1324 b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len); 1325} 1326 1327static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int) 1328{ 1329 b43_time_lock(dev); 1330 if (dev->dev->id.revision >= 3) { 1331 b43_write32(dev, 0x188, (beacon_int << 16)); 1332 } else { 1333 b43_write16(dev, 0x606, (beacon_int >> 6)); 1334 b43_write16(dev, 0x610, beacon_int); 1335 } 1336 b43_time_unlock(dev); 1337} 1338 1339static void handle_irq_beacon(struct b43_wldev *dev) 1340{ 1341 u32 status; 1342 1343 if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) 1344 return; 1345 1346 dev->irq_savedstate &= ~B43_IRQ_BEACON; 1347 status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD); 1348 1349 if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) { 1350 /* ACK beacon IRQ. */ 1351 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON); 1352 dev->irq_savedstate |= B43_IRQ_BEACON; 1353 if (dev->cached_beacon) 1354 kfree_skb(dev->cached_beacon); 1355 dev->cached_beacon = NULL; 1356 return; 1357 } 1358 if (!(status & 0x1)) { 1359 b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB); 1360 status |= 0x1; 1361 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); 1362 } 1363 if (!(status & 0x2)) { 1364 b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB); 1365 status |= 0x2; 1366 b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status); 1367 } 1368} 1369 1370static void handle_irq_ucode_debug(struct b43_wldev *dev) 1371{ 1372 //TODO 1373} 1374 1375/* Interrupt handler bottom-half */ 1376static void b43_interrupt_tasklet(struct b43_wldev *dev) 1377{ 1378 u32 reason; 1379 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; 1380 u32 merged_dma_reason = 0; 1381 int i; 1382 unsigned long flags; 1383 1384 spin_lock_irqsave(&dev->wl->irq_lock, flags); 1385 1386 B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED); 1387 1388 reason = dev->irq_reason; 1389 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) { 1390 dma_reason[i] = dev->dma_reason[i]; 1391 merged_dma_reason |= dma_reason[i]; 1392 } 1393 1394 if (unlikely(reason & B43_IRQ_MAC_TXERR)) 1395 b43err(dev->wl, "MAC transmission error\n"); 1396 1397 if (unlikely(reason & B43_IRQ_PHY_TXERR)) 1398 b43err(dev->wl, "PHY transmission error\n"); 1399 1400 if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK | 1401 B43_DMAIRQ_NONFATALMASK))) { 1402 if (merged_dma_reason & B43_DMAIRQ_FATALMASK) { 1403 b43err(dev->wl, "Fatal DMA error: " 1404 "0x%08X, 0x%08X, 0x%08X, " 1405 "0x%08X, 0x%08X, 0x%08X\n", 1406 dma_reason[0], dma_reason[1], 1407 dma_reason[2], dma_reason[3], 1408 dma_reason[4], dma_reason[5]); 1409 b43_controller_restart(dev, "DMA error"); 1410 mmiowb(); 1411 spin_unlock_irqrestore(&dev->wl->irq_lock, flags); 1412 return; 1413 } 1414 if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) { 1415 b43err(dev->wl, "DMA error: " 1416 "0x%08X, 0x%08X, 0x%08X, " 1417 "0x%08X, 0x%08X, 0x%08X\n", 1418 dma_reason[0], dma_reason[1], 1419 dma_reason[2], dma_reason[3], 1420 dma_reason[4], dma_reason[5]); 1421 } 1422 } 1423 1424 if (unlikely(reason & B43_IRQ_UCODE_DEBUG)) 1425 handle_irq_ucode_debug(dev); 1426 if (reason & B43_IRQ_TBTT_INDI) 1427 handle_irq_tbtt_indication(dev); 1428 if (reason & B43_IRQ_ATIM_END) 1429 handle_irq_atim_end(dev); 1430 if (reason & B43_IRQ_BEACON) 1431 handle_irq_beacon(dev); 1432 if (reason & B43_IRQ_PMQ) 1433 handle_irq_pmq(dev); 1434 if (reason & B43_IRQ_TXFIFO_FLUSH_OK) 1435 ;/* TODO */ 1436 if (reason & B43_IRQ_NOISESAMPLE_OK) 1437 handle_irq_noise(dev); 1438 1439 /* Check the DMA reason registers for received data. */ 1440 if (dma_reason[0] & B43_DMAIRQ_RX_DONE) { 1441 if (b43_using_pio(dev)) 1442 b43_pio_rx(dev->pio.queue0); 1443 else 1444 b43_dma_rx(dev->dma.rx_ring0); 1445 } 1446 B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE); 1447 B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE); 1448 if (dma_reason[3] & B43_DMAIRQ_RX_DONE) { 1449 if (b43_using_pio(dev)) 1450 b43_pio_rx(dev->pio.queue3); 1451 else 1452 b43_dma_rx(dev->dma.rx_ring3); 1453 } 1454 B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE); 1455 B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE); 1456 1457 if (reason & B43_IRQ_TX_OK) 1458 handle_irq_transmit_status(dev); 1459 1460 b43_interrupt_enable(dev, dev->irq_savedstate); 1461 mmiowb(); 1462 spin_unlock_irqrestore(&dev->wl->irq_lock, flags); 1463} 1464 1465static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx) 1466{ 1467 u16 rxctl; 1468 1469 rxctl = b43_read16(dev, base + B43_PIO_RXCTL); 1470 if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE) 1471 dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE; 1472 else 1473 dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE; 1474} 1475 1476static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason) 1477{ 1478 if (b43_using_pio(dev) && 1479 (dev->dev->id.revision < 3) && 1480 (!(reason & B43_IRQ_PIO_WORKAROUND))) { 1481 /* Apply a PIO specific workaround to the dma_reasons */ 1482 pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0); 1483 pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1); 1484 pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2); 1485 pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3); 1486 } 1487 1488 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason); 1489 1490 b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]); 1491 b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]); 1492 b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]); 1493 b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]); 1494 b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]); 1495 b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]); 1496} 1497 1498/* Interrupt handler top-half */ 1499static irqreturn_t b43_interrupt_handler(int irq, void *dev_id) 1500{ 1501 irqreturn_t ret = IRQ_NONE; 1502 struct b43_wldev *dev = dev_id; 1503 u32 reason; 1504 1505 if (!dev) 1506 return IRQ_NONE; 1507 1508 spin_lock(&dev->wl->irq_lock); 1509 1510 if (b43_status(dev) < B43_STAT_STARTED) 1511 goto out; 1512 reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); 1513 if (reason == 0xffffffff) /* shared IRQ */ 1514 goto out; 1515 ret = IRQ_HANDLED; 1516 reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); 1517 if (!reason) 1518 goto out; 1519 1520 dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON) 1521 & 0x0001DC00; 1522 dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON) 1523 & 0x0000DC00; 1524 dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON) 1525 & 0x0000DC00; 1526 dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON) 1527 & 0x0001DC00; 1528 dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON) 1529 & 0x0000DC00; 1530 dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON) 1531 & 0x0000DC00; 1532 1533 b43_interrupt_ack(dev, reason); 1534 /* disable all IRQs. They are enabled again in the bottom half. */ 1535 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL); 1536 /* save the reason code and call our bottom half. */ 1537 dev->irq_reason = reason; 1538 tasklet_schedule(&dev->isr_tasklet); 1539 out: 1540 mmiowb(); 1541 spin_unlock(&dev->wl->irq_lock); 1542 1543 return ret; 1544} 1545 1546static void b43_release_firmware(struct b43_wldev *dev) 1547{ 1548 release_firmware(dev->fw.ucode); 1549 dev->fw.ucode = NULL; 1550 release_firmware(dev->fw.pcm); 1551 dev->fw.pcm = NULL; 1552 release_firmware(dev->fw.initvals); 1553 dev->fw.initvals = NULL; 1554 release_firmware(dev->fw.initvals_band); 1555 dev->fw.initvals_band = NULL; 1556} 1557 1558static void b43_print_fw_helptext(struct b43_wl *wl) 1559{ 1560 b43err(wl, "You must go to " 1561 "http://linuxwireless.org/en/users/Drivers/b43#devicefirmware " 1562 "and download the correct firmware (version 4).\n"); 1563} 1564 1565static int do_request_fw(struct b43_wldev *dev, 1566 const char *name, 1567 const struct firmware **fw) 1568{ 1569 char path[sizeof(modparam_fwpostfix) + 32]; 1570 struct b43_fw_header *hdr; 1571 u32 size; 1572 int err; 1573 1574 if (!name) 1575 return 0; 1576 1577 snprintf(path, ARRAY_SIZE(path), 1578 "b43%s/%s.fw", 1579 modparam_fwpostfix, name); 1580 err = request_firmware(fw, path, dev->dev->dev); 1581 if (err) { 1582 b43err(dev->wl, "Firmware file \"%s\" not found " 1583 "or load failed.\n", path); 1584 return err; 1585 } 1586 if ((*fw)->size < sizeof(struct b43_fw_header)) 1587 goto err_format; 1588 hdr = (struct b43_fw_header *)((*fw)->data); 1589 switch (hdr->type) { 1590 case B43_FW_TYPE_UCODE: 1591 case B43_FW_TYPE_PCM: 1592 size = be32_to_cpu(hdr->size); 1593 if (size != (*fw)->size - sizeof(struct b43_fw_header)) 1594 goto err_format; 1595 /* fallthrough */ 1596 case B43_FW_TYPE_IV: 1597 if (hdr->ver != 1) 1598 goto err_format; 1599 break; 1600 default: 1601 goto err_format; 1602 } 1603 1604 return err; 1605 1606err_format: 1607 b43err(dev->wl, "Firmware file \"%s\" format error.\n", path); 1608 return -EPROTO; 1609} 1610 1611static int b43_request_firmware(struct b43_wldev *dev) 1612{ 1613 struct b43_firmware *fw = &dev->fw; 1614 const u8 rev = dev->dev->id.revision; 1615 const char *filename; 1616 u32 tmshigh; 1617 int err; 1618 1619 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); 1620 if (!fw->ucode) { 1621 if ((rev >= 5) && (rev <= 10)) 1622 filename = "ucode5"; 1623 else if ((rev >= 11) && (rev <= 12)) 1624 filename = "ucode11"; 1625 else if (rev >= 13) 1626 filename = "ucode13"; 1627 else 1628 goto err_no_ucode; 1629 err = do_request_fw(dev, filename, &fw->ucode); 1630 if (err) 1631 goto err_load; 1632 } 1633 if (!fw->pcm) { 1634 if ((rev >= 5) && (rev <= 10)) 1635 filename = "pcm5"; 1636 else if (rev >= 11) 1637 filename = NULL; 1638 else 1639 goto err_no_pcm; 1640 err = do_request_fw(dev, filename, &fw->pcm); 1641 if (err) 1642 goto err_load; 1643 } 1644 if (!fw->initvals) { 1645 switch (dev->phy.type) { 1646 case B43_PHYTYPE_A: 1647 if ((rev >= 5) && (rev <= 10)) { 1648 if (tmshigh & B43_TMSHIGH_GPHY) 1649 filename = "a0g1initvals5"; 1650 else 1651 filename = "a0g0initvals5"; 1652 } else 1653 goto err_no_initvals; 1654 break; 1655 case B43_PHYTYPE_G: 1656 if ((rev >= 5) && (rev <= 10)) 1657 filename = "b0g0initvals5"; 1658 else if (rev >= 13) 1659 filename = "lp0initvals13"; 1660 else 1661 goto err_no_initvals; 1662 break; 1663 default: 1664 goto err_no_initvals; 1665 } 1666 err = do_request_fw(dev, filename, &fw->initvals); 1667 if (err) 1668 goto err_load; 1669 } 1670 if (!fw->initvals_band) { 1671 switch (dev->phy.type) { 1672 case B43_PHYTYPE_A: 1673 if ((rev >= 5) && (rev <= 10)) { 1674 if (tmshigh & B43_TMSHIGH_GPHY) 1675 filename = "a0g1bsinitvals5"; 1676 else 1677 filename = "a0g0bsinitvals5"; 1678 } else if (rev >= 11) 1679 filename = NULL; 1680 else 1681 goto err_no_initvals; 1682 break; 1683 case B43_PHYTYPE_G: 1684 if ((rev >= 5) && (rev <= 10)) 1685 filename = "b0g0bsinitvals5"; 1686 else if (rev >= 11) 1687 filename = NULL; 1688 else 1689 goto err_no_initvals; 1690 break; 1691 default: 1692 goto err_no_initvals; 1693 } 1694 err = do_request_fw(dev, filename, &fw->initvals_band); 1695 if (err) 1696 goto err_load; 1697 } 1698 1699 return 0; 1700 1701err_load: 1702 b43_print_fw_helptext(dev->wl); 1703 goto error; 1704 1705err_no_ucode: 1706 err = -ENODEV; 1707 b43err(dev->wl, "No microcode available for core rev %u\n", rev); 1708 goto error; 1709 1710err_no_pcm: 1711 err = -ENODEV; 1712 b43err(dev->wl, "No PCM available for core rev %u\n", rev); 1713 goto error; 1714 1715err_no_initvals: 1716 err = -ENODEV; 1717 b43err(dev->wl, "No Initial Values firmware file for PHY %u, " 1718 "core rev %u\n", dev->phy.type, rev); 1719 goto error; 1720 1721error: 1722 b43_release_firmware(dev); 1723 return err; 1724} 1725 1726static int b43_upload_microcode(struct b43_wldev *dev) 1727{ 1728 const size_t hdr_len = sizeof(struct b43_fw_header); 1729 const __be32 *data; 1730 unsigned int i, len; 1731 u16 fwrev, fwpatch, fwdate, fwtime; 1732 u32 tmp; 1733 int err = 0; 1734 1735 /* Upload Microcode. */ 1736 data = (__be32 *) (dev->fw.ucode->data + hdr_len); 1737 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32); 1738 b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000); 1739 for (i = 0; i < len; i++) { 1740 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i])); 1741 udelay(10); 1742 } 1743 1744 if (dev->fw.pcm) { 1745 /* Upload PCM data. */ 1746 data = (__be32 *) (dev->fw.pcm->data + hdr_len); 1747 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32); 1748 b43_shm_control_word(dev, B43_SHM_HW, 0x01EA); 1749 b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000); 1750 /* No need for autoinc bit in SHM_HW */ 1751 b43_shm_control_word(dev, B43_SHM_HW, 0x01EB); 1752 for (i = 0; i < len; i++) { 1753 b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i])); 1754 udelay(10); 1755 } 1756 } 1757 1758 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL); 1759 b43_write32(dev, B43_MMIO_MACCTL, 1760 B43_MACCTL_PSM_RUN | 1761 B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA); 1762 1763 /* Wait for the microcode to load and respond */ 1764 i = 0; 1765 while (1) { 1766 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); 1767 if (tmp == B43_IRQ_MAC_SUSPENDED) 1768 break; 1769 i++; 1770 if (i >= 50) { 1771 b43err(dev->wl, "Microcode not responding\n"); 1772 b43_print_fw_helptext(dev->wl); 1773 err = -ENODEV; 1774 goto out; 1775 } 1776 udelay(10); 1777 } 1778 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */ 1779 1780 /* Get and check the revisions. */ 1781 fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV); 1782 fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH); 1783 fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE); 1784 fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME); 1785 1786 if (fwrev <= 0x128) { 1787 b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from " 1788 "binary drivers older than version 4.x is unsupported. " 1789 "You must upgrade your firmware files.\n"); 1790 b43_print_fw_helptext(dev->wl); 1791 b43_write32(dev, B43_MMIO_MACCTL, 0); 1792 err = -EOPNOTSUPP; 1793 goto out; 1794 } 1795 b43dbg(dev->wl, "Loading firmware version %u.%u " 1796 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", 1797 fwrev, fwpatch, 1798 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF, 1799 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F); 1800 1801 dev->fw.rev = fwrev; 1802 dev->fw.patch = fwpatch; 1803 1804 out: 1805 return err; 1806} 1807 1808static int b43_write_initvals(struct b43_wldev *dev, 1809 const struct b43_iv *ivals, 1810 size_t count, 1811 size_t array_size) 1812{ 1813 const struct b43_iv *iv; 1814 u16 offset; 1815 size_t i; 1816 bool bit32; 1817 1818 BUILD_BUG_ON(sizeof(struct b43_iv) != 6); 1819 iv = ivals; 1820 for (i = 0; i < count; i++) { 1821 if (array_size < sizeof(iv->offset_size)) 1822 goto err_format; 1823 array_size -= sizeof(iv->offset_size); 1824 offset = be16_to_cpu(iv->offset_size); 1825 bit32 = !!(offset & B43_IV_32BIT); 1826 offset &= B43_IV_OFFSET_MASK; 1827 if (offset >= 0x1000) 1828 goto err_format; 1829 if (bit32) { 1830 u32 value; 1831 1832 if (array_size < sizeof(iv->data.d32)) 1833 goto err_format; 1834 array_size -= sizeof(iv->data.d32); 1835 1836 value = be32_to_cpu(get_unaligned(&iv->data.d32)); 1837 b43_write32(dev, offset, value); 1838 1839 iv = (const struct b43_iv *)((const uint8_t *)iv + 1840 sizeof(__be16) + 1841 sizeof(__be32)); 1842 } else { 1843 u16 value; 1844 1845 if (array_size < sizeof(iv->data.d16)) 1846 goto err_format; 1847 array_size -= sizeof(iv->data.d16); 1848 1849 value = be16_to_cpu(iv->data.d16); 1850 b43_write16(dev, offset, value); 1851 1852 iv = (const struct b43_iv *)((const uint8_t *)iv + 1853 sizeof(__be16) + 1854 sizeof(__be16)); 1855 } 1856 } 1857 if (array_size) 1858 goto err_format; 1859 1860 return 0; 1861 1862err_format: 1863 b43err(dev->wl, "Initial Values Firmware file-format error.\n"); 1864 b43_print_fw_helptext(dev->wl); 1865 1866 return -EPROTO; 1867} 1868 1869static int b43_upload_initvals(struct b43_wldev *dev) 1870{ 1871 const size_t hdr_len = sizeof(struct b43_fw_header); 1872 const struct b43_fw_header *hdr; 1873 struct b43_firmware *fw = &dev->fw; 1874 const struct b43_iv *ivals; 1875 size_t count; 1876 int err; 1877 1878 hdr = (const struct b43_fw_header *)(fw->initvals->data); 1879 ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len); 1880 count = be32_to_cpu(hdr->size); 1881 err = b43_write_initvals(dev, ivals, count, 1882 fw->initvals->size - hdr_len); 1883 if (err) 1884 goto out; 1885 if (fw->initvals_band) { 1886 hdr = (const struct b43_fw_header *)(fw->initvals_band->data); 1887 ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len); 1888 count = be32_to_cpu(hdr->size); 1889 err = b43_write_initvals(dev, ivals, count, 1890 fw->initvals_band->size - hdr_len); 1891 if (err) 1892 goto out; 1893 } 1894out: 1895 1896 return err; 1897} 1898 1899/* Initialize the GPIOs 1900 * http://bcm-specs.sipsolutions.net/GPIO 1901 */ 1902static int b43_gpio_init(struct b43_wldev *dev) 1903{ 1904 struct ssb_bus *bus = dev->dev->bus; 1905 struct ssb_device *gpiodev, *pcidev = NULL; 1906 u32 mask, set; 1907 1908 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) 1909 & ~B43_MACCTL_GPOUTSMSK); 1910 1911 b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK) 1912 | 0x000F); 1913 1914 mask = 0x0000001F; 1915 set = 0x0000000F; 1916 if (dev->dev->bus->chip_id == 0x4301) { 1917 mask |= 0x0060; 1918 set |= 0x0060; 1919 } 1920 if (0 /* FIXME: conditional unknown */ ) { 1921 b43_write16(dev, B43_MMIO_GPIO_MASK, 1922 b43_read16(dev, B43_MMIO_GPIO_MASK) 1923 | 0x0100); 1924 mask |= 0x0180; 1925 set |= 0x0180; 1926 } 1927 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) { 1928 b43_write16(dev, B43_MMIO_GPIO_MASK, 1929 b43_read16(dev, B43_MMIO_GPIO_MASK) 1930 | 0x0200); 1931 mask |= 0x0200; 1932 set |= 0x0200; 1933 } 1934 if (dev->dev->id.revision >= 2) 1935 mask |= 0x0010; /* FIXME: This is redundant. */ 1936 1937#ifdef CONFIG_SSB_DRIVER_PCICORE 1938 pcidev = bus->pcicore.dev; 1939#endif 1940 gpiodev = bus->chipco.dev ? : pcidev; 1941 if (!gpiodev) 1942 return 0; 1943 ssb_write32(gpiodev, B43_GPIO_CONTROL, 1944 (ssb_read32(gpiodev, B43_GPIO_CONTROL) 1945 & mask) | set); 1946 1947 return 0; 1948} 1949 1950/* Turn off all GPIO stuff. Call this on module unload, for example. */ 1951static void b43_gpio_cleanup(struct b43_wldev *dev) 1952{ 1953 struct ssb_bus *bus = dev->dev->bus; 1954 struct ssb_device *gpiodev, *pcidev = NULL; 1955 1956#ifdef CONFIG_SSB_DRIVER_PCICORE 1957 pcidev = bus->pcicore.dev; 1958#endif 1959 gpiodev = bus->chipco.dev ? : pcidev; 1960 if (!gpiodev) 1961 return; 1962 ssb_write32(gpiodev, B43_GPIO_CONTROL, 0); 1963} 1964 1965/* http://bcm-specs.sipsolutions.net/EnableMac */ 1966void b43_mac_enable(struct b43_wldev *dev) 1967{ 1968 dev->mac_suspended--; 1969 B43_WARN_ON(dev->mac_suspended < 0); 1970 B43_WARN_ON(irqs_disabled()); 1971 if (dev->mac_suspended == 0) { 1972 b43_write32(dev, B43_MMIO_MACCTL, 1973 b43_read32(dev, B43_MMIO_MACCTL) 1974 | B43_MACCTL_ENABLED); 1975 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 1976 B43_IRQ_MAC_SUSPENDED); 1977 /* Commit writes */ 1978 b43_read32(dev, B43_MMIO_MACCTL); 1979 b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); 1980 b43_power_saving_ctl_bits(dev, 0); 1981 1982 /* Re-enable IRQs. */ 1983 spin_lock_irq(&dev->wl->irq_lock); 1984 b43_interrupt_enable(dev, dev->irq_savedstate); 1985 spin_unlock_irq(&dev->wl->irq_lock); 1986 } 1987} 1988 1989/* http://bcm-specs.sipsolutions.net/SuspendMAC */ 1990void b43_mac_suspend(struct b43_wldev *dev) 1991{ 1992 int i; 1993 u32 tmp; 1994 1995 might_sleep(); 1996 B43_WARN_ON(irqs_disabled()); 1997 B43_WARN_ON(dev->mac_suspended < 0); 1998 1999 if (dev->mac_suspended == 0) { 2000 /* Mask IRQs before suspending MAC. Otherwise 2001 * the MAC stays busy and won't suspend. */ 2002 spin_lock_irq(&dev->wl->irq_lock); 2003 tmp = b43_interrupt_disable(dev, B43_IRQ_ALL); 2004 spin_unlock_irq(&dev->wl->irq_lock); 2005 b43_synchronize_irq(dev); 2006 dev->irq_savedstate = tmp; 2007 2008 b43_power_saving_ctl_bits(dev, B43_PS_AWAKE); 2009 b43_write32(dev, B43_MMIO_MACCTL, 2010 b43_read32(dev, B43_MMIO_MACCTL) 2011 & ~B43_MACCTL_ENABLED); 2012 /* force pci to flush the write */ 2013 b43_read32(dev, B43_MMIO_MACCTL); 2014 for (i = 40; i; i--) { 2015 tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); 2016 if (tmp & B43_IRQ_MAC_SUSPENDED) 2017 goto out; 2018 msleep(1); 2019 } 2020 b43err(dev->wl, "MAC suspend failed\n"); 2021 } 2022out: 2023 dev->mac_suspended++; 2024} 2025 2026static void b43_adjust_opmode(struct b43_wldev *dev) 2027{ 2028 struct b43_wl *wl = dev->wl; 2029 u32 ctl; 2030 u16 cfp_pretbtt; 2031 2032 ctl = b43_read32(dev, B43_MMIO_MACCTL); 2033 /* Reset status to STA infrastructure mode. */ 2034 ctl &= ~B43_MACCTL_AP; 2035 ctl &= ~B43_MACCTL_KEEP_CTL; 2036 ctl &= ~B43_MACCTL_KEEP_BADPLCP; 2037 ctl &= ~B43_MACCTL_KEEP_BAD; 2038 ctl &= ~B43_MACCTL_PROMISC; 2039 ctl &= ~B43_MACCTL_BEACPROMISC; 2040 ctl |= B43_MACCTL_INFRA; 2041 2042 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) 2043 ctl |= B43_MACCTL_AP; 2044 else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS)) 2045 ctl &= ~B43_MACCTL_INFRA; 2046 2047 if (wl->filter_flags & FIF_CONTROL) 2048 ctl |= B43_MACCTL_KEEP_CTL; 2049 if (wl->filter_flags & FIF_FCSFAIL) 2050 ctl |= B43_MACCTL_KEEP_BAD; 2051 if (wl->filter_flags & FIF_PLCPFAIL) 2052 ctl |= B43_MACCTL_KEEP_BADPLCP; 2053 if (wl->filter_flags & FIF_PROMISC_IN_BSS) 2054 ctl |= B43_MACCTL_PROMISC; 2055 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) 2056 ctl |= B43_MACCTL_BEACPROMISC; 2057 2058 /* Workaround: On old hardware the HW-MAC-address-filter 2059 * doesn't work properly, so always run promisc in filter 2060 * it in software. */ 2061 if (dev->dev->id.revision <= 4) 2062 ctl |= B43_MACCTL_PROMISC; 2063 2064 b43_write32(dev, B43_MMIO_MACCTL, ctl); 2065 2066 cfp_pretbtt = 2; 2067 if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) { 2068 if (dev->dev->bus->chip_id == 0x4306 && 2069 dev->dev->bus->chip_rev == 3) 2070 cfp_pretbtt = 100; 2071 else 2072 cfp_pretbtt = 50; 2073 } 2074 b43_write16(dev, 0x612, cfp_pretbtt); 2075} 2076 2077static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm) 2078{ 2079 u16 offset; 2080 2081 if (is_ofdm) { 2082 offset = 0x480; 2083 offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; 2084 } else { 2085 offset = 0x4C0; 2086 offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2; 2087 } 2088 b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20, 2089 b43_shm_read16(dev, B43_SHM_SHARED, offset)); 2090} 2091 2092static void b43_rate_memory_init(struct b43_wldev *dev) 2093{ 2094 switch (dev->phy.type) { 2095 case B43_PHYTYPE_A: 2096 case B43_PHYTYPE_G: 2097 b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1); 2098 b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1); 2099 b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1); 2100 b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1); 2101 b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1); 2102 b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1); 2103 b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1); 2104 if (dev->phy.type == B43_PHYTYPE_A) 2105 break; 2106 /* fallthrough */ 2107 case B43_PHYTYPE_B: 2108 b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0); 2109 b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0); 2110 b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0); 2111 b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0); 2112 break; 2113 default: 2114 B43_WARN_ON(1); 2115 } 2116} 2117 2118/* Set the TX-Antenna for management frames sent by firmware. */ 2119static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna) 2120{ 2121 u16 ant = 0; 2122 u16 tmp; 2123 2124 switch (antenna) { 2125 case B43_ANTENNA0: 2126 ant |= B43_TX4_PHY_ANT0; 2127 break; 2128 case B43_ANTENNA1: 2129 ant |= B43_TX4_PHY_ANT1; 2130 break; 2131 case B43_ANTENNA_AUTO: 2132 ant |= B43_TX4_PHY_ANTLAST; 2133 break; 2134 default: 2135 B43_WARN_ON(1); 2136 } 2137 2138 /* FIXME We also need to set the other flags of the PHY control field somewhere. */ 2139 2140 /* For Beacons */ 2141 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL); 2142 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; 2143 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp); 2144 /* For ACK/CTS */ 2145 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL); 2146 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; 2147 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp); 2148 /* For Probe Resposes */ 2149 tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL); 2150 tmp = (tmp & ~B43_TX4_PHY_ANT) | ant; 2151 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp); 2152} 2153 2154/* This is the opposite of b43_chip_init() */ 2155static void b43_chip_exit(struct b43_wldev *dev) 2156{ 2157 b43_radio_turn_off(dev, 1); 2158 b43_gpio_cleanup(dev); 2159 /* firmware is released later */ 2160} 2161 2162/* Initialize the chip 2163 * http://bcm-specs.sipsolutions.net/ChipInit 2164 */ 2165static int b43_chip_init(struct b43_wldev *dev) 2166{ 2167 struct b43_phy *phy = &dev->phy; 2168 int err, tmp; 2169 u32 value32; 2170 u16 value16; 2171 2172 b43_write32(dev, B43_MMIO_MACCTL, 2173 B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED); 2174 2175 err = b43_request_firmware(dev); 2176 if (err) 2177 goto out; 2178 err = b43_upload_microcode(dev); 2179 if (err) 2180 goto out; /* firmware is released later */ 2181 2182 err = b43_gpio_init(dev); 2183 if (err) 2184 goto out; /* firmware is released later */ 2185 2186 err = b43_upload_initvals(dev); 2187 if (err) 2188 goto err_gpio_clean; 2189 b43_radio_turn_on(dev); 2190 2191 b43_write16(dev, 0x03E6, 0x0000); 2192 err = b43_phy_init(dev); 2193 if (err) 2194 goto err_radio_off; 2195 2196 /* Select initial Interference Mitigation. */ 2197 tmp = phy->interfmode; 2198 phy->interfmode = B43_INTERFMODE_NONE; 2199 b43_radio_set_interference_mitigation(dev, tmp); 2200 2201 b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT); 2202 b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT); 2203 2204 if (phy->type == B43_PHYTYPE_B) { 2205 value16 = b43_read16(dev, 0x005E); 2206 value16 |= 0x0004; 2207 b43_write16(dev, 0x005E, value16); 2208 } 2209 b43_write32(dev, 0x0100, 0x01000000); 2210 if (dev->dev->id.revision < 5) 2211 b43_write32(dev, 0x010C, 0x01000000); 2212 2213 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) 2214 & ~B43_MACCTL_INFRA); 2215 b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL) 2216 | B43_MACCTL_INFRA); 2217 2218 if (b43_using_pio(dev)) { 2219 b43_write32(dev, 0x0210, 0x00000100); 2220 b43_write32(dev, 0x0230, 0x00000100); 2221 b43_write32(dev, 0x0250, 0x00000100); 2222 b43_write32(dev, 0x0270, 0x00000100); 2223 b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000); 2224 } 2225 2226 /* Probe Response Timeout value */ 2227 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ 2228 b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000); 2229 2230 /* Initially set the wireless operation mode. */ 2231 b43_adjust_opmode(dev); 2232 2233 if (dev->dev->id.revision < 3) { 2234 b43_write16(dev, 0x060E, 0x0000); 2235 b43_write16(dev, 0x0610, 0x8000); 2236 b43_write16(dev, 0x0604, 0x0000); 2237 b43_write16(dev, 0x0606, 0x0200); 2238 } else { 2239 b43_write32(dev, 0x0188, 0x80000000); 2240 b43_write32(dev, 0x018C, 0x02000000); 2241 } 2242 b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000); 2243 b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00); 2244 b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00); 2245 b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00); 2246 b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00); 2247 b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00); 2248 b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00); 2249 2250 value32 = ssb_read32(dev->dev, SSB_TMSLOW); 2251 value32 |= 0x00100000; 2252 ssb_write32(dev->dev, SSB_TMSLOW, value32); 2253 2254 b43_write16(dev, B43_MMIO_POWERUP_DELAY, 2255 dev->dev->bus->chipco.fast_pwrup_delay); 2256 2257 /* OFDM address caching. */ 2258 phy->ofdm_valid = 0; 2259 2260 err = 0; 2261 b43dbg(dev->wl, "Chip initialized\n"); 2262out: 2263 return err; 2264 2265err_radio_off: 2266 b43_radio_turn_off(dev, 1); 2267err_gpio_clean: 2268 b43_gpio_cleanup(dev); 2269 return err; 2270} 2271 2272static void b43_periodic_every120sec(struct b43_wldev *dev) 2273{ 2274 struct b43_phy *phy = &dev->phy; 2275 2276 if (phy->type != B43_PHYTYPE_G || phy->rev < 2) 2277 return; 2278 2279 b43_mac_suspend(dev); 2280 b43_lo_g_measure(dev); 2281 b43_mac_enable(dev); 2282 if (b43_has_hardware_pctl(phy)) 2283 b43_lo_g_ctl_mark_all_unused(dev); 2284} 2285 2286static void b43_periodic_every60sec(struct b43_wldev *dev) 2287{ 2288 struct b43_phy *phy = &dev->phy; 2289 2290 if (!b43_has_hardware_pctl(phy)) 2291 b43_lo_g_ctl_mark_all_unused(dev); 2292 if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) { 2293 b43_mac_suspend(dev); 2294 b43_calc_nrssi_slope(dev); 2295 if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) { 2296 u8 old_chan = phy->channel; 2297 2298 /* VCO Calibration */ 2299 if (old_chan >= 8) 2300 b43_radio_selectchannel(dev, 1, 0); 2301 else 2302 b43_radio_selectchannel(dev, 13, 0); 2303 b43_radio_selectchannel(dev, old_chan, 0); 2304 } 2305 b43_mac_enable(dev); 2306 } 2307} 2308 2309static void b43_periodic_every30sec(struct b43_wldev *dev) 2310{ 2311 /* Update device statistics. */ 2312 b43_calculate_link_quality(dev); 2313} 2314 2315static void b43_periodic_every15sec(struct b43_wldev *dev) 2316{ 2317 struct b43_phy *phy = &dev->phy; 2318 2319 if (phy->type == B43_PHYTYPE_G) { 2320 //TODO: update_aci_moving_average 2321 if (phy->aci_enable && phy->aci_wlan_automatic) { 2322 b43_mac_suspend(dev); 2323 if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) { 2324 if (0 /*TODO: bunch of conditions */ ) { 2325 b43_radio_set_interference_mitigation 2326 (dev, B43_INTERFMODE_MANUALWLAN); 2327 } 2328 } else if (1 /*TODO*/) { 2329 /* 2330 if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) { 2331 b43_radio_set_interference_mitigation(dev, 2332 B43_INTERFMODE_NONE); 2333 } 2334 */ 2335 } 2336 b43_mac_enable(dev); 2337 } else if (phy->interfmode == B43_INTERFMODE_NONWLAN && 2338 phy->rev == 1) { 2339 //TODO: implement rev1 workaround 2340 } 2341 } 2342 b43_phy_xmitpower(dev); //FIXME: unless scanning? 2343 //TODO for APHY (temperature?) 2344} 2345 2346static void do_periodic_work(struct b43_wldev *dev) 2347{ 2348 unsigned int state; 2349 2350 state = dev->periodic_state; 2351 if (state % 8 == 0) 2352 b43_periodic_every120sec(dev); 2353 if (state % 4 == 0) 2354 b43_periodic_every60sec(dev); 2355 if (state % 2 == 0) 2356 b43_periodic_every30sec(dev); 2357 b43_periodic_every15sec(dev); 2358} 2359 2360/* Periodic work locking policy: 2361 * The whole periodic work handler is protected by 2362 * wl->mutex. If another lock is needed somewhere in the 2363 * pwork callchain, it's aquired in-place, where it's needed. 2364 */ 2365static void b43_periodic_work_handler(struct work_struct *work) 2366{ 2367 struct b43_wldev *dev = container_of(work, struct b43_wldev, 2368 periodic_work.work); 2369 struct b43_wl *wl = dev->wl; 2370 unsigned long delay; 2371 2372 mutex_lock(&wl->mutex); 2373 2374 if (unlikely(b43_status(dev) != B43_STAT_STARTED)) 2375 goto out; 2376 if (b43_debug(dev, B43_DBG_PWORK_STOP)) 2377 goto out_requeue; 2378 2379 do_periodic_work(dev); 2380 2381 dev->periodic_state++; 2382out_requeue: 2383 if (b43_debug(dev, B43_DBG_PWORK_FAST)) 2384 delay = msecs_to_jiffies(50); 2385 else 2386 delay = round_jiffies_relative(HZ * 15); 2387 queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay); 2388out: 2389 mutex_unlock(&wl->mutex); 2390} 2391 2392static void b43_periodic_tasks_setup(struct b43_wldev *dev) 2393{ 2394 struct delayed_work *work = &dev->periodic_work; 2395 2396 dev->periodic_state = 0; 2397 INIT_DELAYED_WORK(work, b43_periodic_work_handler); 2398 queue_delayed_work(dev->wl->hw->workqueue, work, 0); 2399} 2400 2401/* Validate access to the chip (SHM) */ 2402static int b43_validate_chipaccess(struct b43_wldev *dev) 2403{ 2404 u32 value; 2405 u32 shm_backup; 2406 2407 shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0); 2408 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA); 2409 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA) 2410 goto error; 2411 b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55); 2412 if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55) 2413 goto error; 2414 b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup); 2415 2416 value = b43_read32(dev, B43_MMIO_MACCTL); 2417 if ((value | B43_MACCTL_GMODE) != 2418 (B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED)) 2419 goto error; 2420 2421 value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); 2422 if (value) 2423 goto error; 2424 2425 return 0; 2426 error: 2427 b43err(dev->wl, "Failed to validate the chipaccess\n"); 2428 return -ENODEV; 2429} 2430 2431static void b43_security_init(struct b43_wldev *dev) 2432{ 2433 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; 2434 B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); 2435 dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP); 2436 /* KTP is a word address, but we address SHM bytewise. 2437 * So multiply by two. 2438 */ 2439 dev->ktp *= 2; 2440 if (dev->dev->id.revision >= 5) { 2441 /* Number of RCMTA address slots */ 2442 b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8); 2443 } 2444 b43_clear_keys(dev); 2445} 2446 2447static int b43_rng_read(struct hwrng *rng, u32 * data) 2448{ 2449 struct b43_wl *wl = (struct b43_wl *)rng->priv; 2450 unsigned long flags; 2451 2452 /* Don't take wl->mutex here, as it could deadlock with 2453 * hwrng internal locking. It's not needed to take 2454 * wl->mutex here, anyway. */ 2455 2456 spin_lock_irqsave(&wl->irq_lock, flags); 2457 *data = b43_read16(wl->current_dev, B43_MMIO_RNG); 2458 spin_unlock_irqrestore(&wl->irq_lock, flags); 2459 2460 return (sizeof(u16)); 2461} 2462 2463static void b43_rng_exit(struct b43_wl *wl) 2464{ 2465 if (wl->rng_initialized) 2466 hwrng_unregister(&wl->rng); 2467} 2468 2469static int b43_rng_init(struct b43_wl *wl) 2470{ 2471 int err; 2472 2473 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), 2474 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); 2475 wl->rng.name = wl->rng_name; 2476 wl->rng.data_read = b43_rng_read; 2477 wl->rng.priv = (unsigned long)wl; 2478 wl->rng_initialized = 1; 2479 err = hwrng_register(&wl->rng); 2480 if (err) { 2481 wl->rng_initialized = 0; 2482 b43err(wl, "Failed to register the random " 2483 "number generator (%d)\n", err); 2484 } 2485 2486 return err; 2487} 2488 2489static int b43_op_tx(struct ieee80211_hw *hw, 2490 struct sk_buff *skb, 2491 struct ieee80211_tx_control *ctl) 2492{ 2493 struct b43_wl *wl = hw_to_b43_wl(hw); 2494 struct b43_wldev *dev = wl->current_dev; 2495 int err = -ENODEV; 2496 unsigned long flags; 2497 2498 if (unlikely(!dev)) 2499 goto out; 2500 if (unlikely(b43_status(dev) < B43_STAT_STARTED)) 2501 goto out; 2502 /* DMA-TX is done without a global lock. */ 2503 if (b43_using_pio(dev)) { 2504 spin_lock_irqsave(&wl->irq_lock, flags); 2505 err = b43_pio_tx(dev, skb, ctl); 2506 spin_unlock_irqrestore(&wl->irq_lock, flags); 2507 } else 2508 err = b43_dma_tx(dev, skb, ctl); 2509out: 2510 if (unlikely(err)) 2511 return NETDEV_TX_BUSY; 2512 return NETDEV_TX_OK; 2513} 2514 2515static int b43_op_conf_tx(struct ieee80211_hw *hw, 2516 int queue, 2517 const struct ieee80211_tx_queue_params *params) 2518{ 2519 return 0; 2520} 2521 2522static int b43_op_get_tx_stats(struct ieee80211_hw *hw, 2523 struct ieee80211_tx_queue_stats *stats) 2524{ 2525 struct b43_wl *wl = hw_to_b43_wl(hw); 2526 struct b43_wldev *dev = wl->current_dev; 2527 unsigned long flags; 2528 int err = -ENODEV; 2529 2530 if (!dev) 2531 goto out; 2532 spin_lock_irqsave(&wl->irq_lock, flags); 2533 if (likely(b43_status(dev) >= B43_STAT_STARTED)) { 2534 if (b43_using_pio(dev)) 2535 b43_pio_get_tx_stats(dev, stats); 2536 else 2537 b43_dma_get_tx_stats(dev, stats); 2538 err = 0; 2539 } 2540 spin_unlock_irqrestore(&wl->irq_lock, flags); 2541out: 2542 return err; 2543} 2544 2545static int b43_op_get_stats(struct ieee80211_hw *hw, 2546 struct ieee80211_low_level_stats *stats) 2547{ 2548 struct b43_wl *wl = hw_to_b43_wl(hw); 2549 unsigned long flags; 2550 2551 spin_lock_irqsave(&wl->irq_lock, flags); 2552 memcpy(stats, &wl->ieee_stats, sizeof(*stats)); 2553 spin_unlock_irqrestore(&wl->irq_lock, flags); 2554 2555 return 0; 2556} 2557 2558static const char *phymode_to_string(unsigned int phymode) 2559{ 2560 switch (phymode) { 2561 case B43_PHYMODE_A: 2562 return "A"; 2563 case B43_PHYMODE_B: 2564 return "B"; 2565 case B43_PHYMODE_G: 2566 return "G"; 2567 default: 2568 B43_WARN_ON(1); 2569 } 2570 return ""; 2571} 2572 2573static int find_wldev_for_phymode(struct b43_wl *wl, 2574 unsigned int phymode, 2575 struct b43_wldev **dev, bool * gmode) 2576{ 2577 struct b43_wldev *d; 2578 2579 list_for_each_entry(d, &wl->devlist, list) { 2580 if (d->phy.possible_phymodes & phymode) { 2581 /* Ok, this device supports the PHY-mode. 2582 * Now figure out how the gmode bit has to be 2583 * set to support it. */ 2584 if (phymode == B43_PHYMODE_A) 2585 *gmode = 0; 2586 else 2587 *gmode = 1; 2588 *dev = d; 2589 2590 return 0; 2591 } 2592 } 2593 2594 return -ESRCH; 2595} 2596 2597static void b43_put_phy_into_reset(struct b43_wldev *dev) 2598{ 2599 struct ssb_device *sdev = dev->dev; 2600 u32 tmslow; 2601 2602 tmslow = ssb_read32(sdev, SSB_TMSLOW); 2603 tmslow &= ~B43_TMSLOW_GMODE; 2604 tmslow |= B43_TMSLOW_PHYRESET; 2605 tmslow |= SSB_TMSLOW_FGC; 2606 ssb_write32(sdev, SSB_TMSLOW, tmslow); 2607 msleep(1); 2608 2609 tmslow = ssb_read32(sdev, SSB_TMSLOW); 2610 tmslow &= ~SSB_TMSLOW_FGC; 2611 tmslow |= B43_TMSLOW_PHYRESET; 2612 ssb_write32(sdev, SSB_TMSLOW, tmslow); 2613 msleep(1); 2614} 2615 2616/* Expects wl->mutex locked */ 2617static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode) 2618{ 2619 struct b43_wldev *up_dev; 2620 struct b43_wldev *down_dev; 2621 int err; 2622 bool gmode = 0; 2623 int prev_status; 2624 2625 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); 2626 if (err) { 2627 b43err(wl, "Could not find a device for %s-PHY mode\n", 2628 phymode_to_string(new_mode)); 2629 return err; 2630 } 2631 if ((up_dev == wl->current_dev) && 2632 (!!wl->current_dev->phy.gmode == !!gmode)) { 2633 /* This device is already running. */ 2634 return 0; 2635 } 2636 b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n", 2637 phymode_to_string(new_mode)); 2638 down_dev = wl->current_dev; 2639 2640 prev_status = b43_status(down_dev); 2641 /* Shutdown the currently running core. */ 2642 if (prev_status >= B43_STAT_STARTED) 2643 b43_wireless_core_stop(down_dev); 2644 if (prev_status >= B43_STAT_INITIALIZED) 2645 b43_wireless_core_exit(down_dev); 2646 2647 if (down_dev != up_dev) { 2648 /* We switch to a different core, so we put PHY into 2649 * RESET on the old core. */ 2650 b43_put_phy_into_reset(down_dev); 2651 } 2652 2653 /* Now start the new core. */ 2654 up_dev->phy.gmode = gmode; 2655 if (prev_status >= B43_STAT_INITIALIZED) { 2656 err = b43_wireless_core_init(up_dev); 2657 if (err) { 2658 b43err(wl, "Fatal: Could not initialize device for " 2659 "newly selected %s-PHY mode\n", 2660 phymode_to_string(new_mode)); 2661 goto init_failure; 2662 } 2663 } 2664 if (prev_status >= B43_STAT_STARTED) { 2665 err = b43_wireless_core_start(up_dev); 2666 if (err) { 2667 b43err(wl, "Fatal: Coult not start device for " 2668 "newly selected %s-PHY mode\n", 2669 phymode_to_string(new_mode)); 2670 b43_wireless_core_exit(up_dev); 2671 goto init_failure; 2672 } 2673 } 2674 B43_WARN_ON(b43_status(up_dev) != prev_status); 2675 2676 wl->current_dev = up_dev; 2677 2678 return 0; 2679 init_failure: 2680 /* Whoops, failed to init the new core. No core is operating now. */ 2681 wl->current_dev = NULL; 2682 return err; 2683} 2684 2685static int b43_antenna_from_ieee80211(u8 antenna) 2686{ 2687 switch (antenna) { 2688 case 0: /* default/diversity */ 2689 return B43_ANTENNA_DEFAULT; 2690 case 1: /* Antenna 0 */ 2691 return B43_ANTENNA0; 2692 case 2: /* Antenna 1 */ 2693 return B43_ANTENNA1; 2694 default: 2695 return B43_ANTENNA_DEFAULT; 2696 } 2697} 2698 2699static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) 2700{ 2701 struct b43_wl *wl = hw_to_b43_wl(hw); 2702 struct b43_wldev *dev; 2703 struct b43_phy *phy; 2704 unsigned long flags; 2705 unsigned int new_phymode = 0xFFFF; 2706 int antenna_tx; 2707 int antenna_rx; 2708 int err = 0; 2709 u32 savedirqs; 2710 2711 antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx); 2712 antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx); 2713 2714 mutex_lock(&wl->mutex); 2715 2716 /* Switch the PHY mode (if necessary). */ 2717 switch (conf->phymode) { 2718 case MODE_IEEE80211A: 2719 new_phymode = B43_PHYMODE_A; 2720 break; 2721 case MODE_IEEE80211B: 2722 new_phymode = B43_PHYMODE_B; 2723 break; 2724 case MODE_IEEE80211G: 2725 new_phymode = B43_PHYMODE_G; 2726 break; 2727 default: 2728 B43_WARN_ON(1); 2729 } 2730 err = b43_switch_phymode(wl, new_phymode); 2731 if (err) 2732 goto out_unlock_mutex; 2733 dev = wl->current_dev; 2734 phy = &dev->phy; 2735 2736 /* Disable IRQs while reconfiguring the device. 2737 * This makes it possible to drop the spinlock throughout 2738 * the reconfiguration process. */ 2739 spin_lock_irqsave(&wl->irq_lock, flags); 2740 if (b43_status(dev) < B43_STAT_STARTED) { 2741 spin_unlock_irqrestore(&wl->irq_lock, flags); 2742 goto out_unlock_mutex; 2743 } 2744 savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL); 2745 spin_unlock_irqrestore(&wl->irq_lock, flags); 2746 b43_synchronize_irq(dev); 2747 2748 /* Switch to the requested channel. 2749 * The firmware takes care of races with the TX handler. */ 2750 if (conf->channel_val != phy->channel) 2751 b43_radio_selectchannel(dev, conf->channel_val, 0); 2752 2753 /* Enable/Disable ShortSlot timing. */ 2754 if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) != 2755 dev->short_slot) { 2756 B43_WARN_ON(phy->type != B43_PHYTYPE_G); 2757 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) 2758 b43_short_slot_timing_enable(dev); 2759 else 2760 b43_short_slot_timing_disable(dev); 2761 } 2762 2763 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP); 2764 2765 /* Adjust the desired TX power level. */ 2766 if (conf->power_level != 0) { 2767 if (conf->power_level != phy->power_level) { 2768 phy->power_level = conf->power_level; 2769 b43_phy_xmitpower(dev); 2770 } 2771 } 2772 2773 /* Antennas for RX and management frame TX. */ 2774 b43_mgmtframe_txantenna(dev, antenna_tx); 2775 b43_set_rx_antenna(dev, antenna_rx); 2776 2777 /* Update templates for AP mode. */ 2778 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) 2779 b43_set_beacon_int(dev, conf->beacon_int); 2780 2781 if (!!conf->radio_enabled != phy->radio_on) { 2782 if (conf->radio_enabled) { 2783 b43_radio_turn_on(dev); 2784 b43info(dev->wl, "Radio turned on by software\n"); 2785 if (!dev->radio_hw_enable) { 2786 b43info(dev->wl, "The hardware RF-kill button " 2787 "still turns the radio physically off. " 2788 "Press the button to turn it on.\n"); 2789 } 2790 } else { 2791 b43_radio_turn_off(dev, 0); 2792 b43info(dev->wl, "Radio turned off by software\n"); 2793 } 2794 } 2795 2796 spin_lock_irqsave(&wl->irq_lock, flags); 2797 b43_interrupt_enable(dev, savedirqs); 2798 mmiowb(); 2799 spin_unlock_irqrestore(&wl->irq_lock, flags); 2800 out_unlock_mutex: 2801 mutex_unlock(&wl->mutex); 2802 2803 return err; 2804} 2805 2806static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2807 const u8 *local_addr, const u8 *addr, 2808 struct ieee80211_key_conf *key) 2809{ 2810 struct b43_wl *wl = hw_to_b43_wl(hw); 2811 struct b43_wldev *dev; 2812 unsigned long flags; 2813 u8 algorithm; 2814 u8 index; 2815 int err; 2816 DECLARE_MAC_BUF(mac); 2817 2818 if (modparam_nohwcrypt) 2819 return -ENOSPC; /* User disabled HW-crypto */ 2820 2821 mutex_lock(&wl->mutex); 2822 spin_lock_irqsave(&wl->irq_lock, flags); 2823 2824 dev = wl->current_dev; 2825 err = -ENODEV; 2826 if (!dev || b43_status(dev) < B43_STAT_INITIALIZED) 2827 goto out_unlock; 2828 2829 err = -EINVAL; 2830 switch (key->alg) { 2831 case ALG_WEP: 2832 if (key->keylen == 5) 2833 algorithm = B43_SEC_ALGO_WEP40; 2834 else 2835 algorithm = B43_SEC_ALGO_WEP104; 2836 break; 2837 case ALG_TKIP: 2838 algorithm = B43_SEC_ALGO_TKIP; 2839 break; 2840 case ALG_CCMP: 2841 algorithm = B43_SEC_ALGO_AES; 2842 break; 2843 default: 2844 B43_WARN_ON(1); 2845 goto out_unlock; 2846 } 2847 index = (u8) (key->keyidx); 2848 if (index > 3) 2849 goto out_unlock; 2850 2851 switch (cmd) { 2852 case SET_KEY: 2853 if (algorithm == B43_SEC_ALGO_TKIP) { 2854 /* FIXME: No TKIP hardware encryption for now. */ 2855 err = -EOPNOTSUPP; 2856 goto out_unlock; 2857 } 2858 2859 if (is_broadcast_ether_addr(addr)) { 2860 /* addr is FF:FF:FF:FF:FF:FF for default keys */ 2861 err = b43_key_write(dev, index, algorithm, 2862 key->key, key->keylen, NULL, key); 2863 } else { 2864 /* 2865 * either pairwise key or address is 00:00:00:00:00:00 2866 * for transmit-only keys 2867 */ 2868 err = b43_key_write(dev, -1, algorithm, 2869 key->key, key->keylen, addr, key); 2870 } 2871 if (err) 2872 goto out_unlock; 2873 2874 if (algorithm == B43_SEC_ALGO_WEP40 || 2875 algorithm == B43_SEC_ALGO_WEP104) { 2876 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS); 2877 } else { 2878 b43_hf_write(dev, 2879 b43_hf_read(dev) & ~B43_HF_USEDEFKEYS); 2880 } 2881 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 2882 break; 2883 case DISABLE_KEY: { 2884 err = b43_key_clear(dev, key->hw_key_idx); 2885 if (err) 2886 goto out_unlock; 2887 break; 2888 } 2889 default: 2890 B43_WARN_ON(1); 2891 } 2892out_unlock: 2893 spin_unlock_irqrestore(&wl->irq_lock, flags); 2894 mutex_unlock(&wl->mutex); 2895 if (!err) { 2896 b43dbg(wl, "%s hardware based encryption for keyidx: %d, " 2897 "mac: %s\n", 2898 cmd == SET_KEY ? "Using" : "Disabling", key->keyidx, 2899 print_mac(mac, addr)); 2900 } 2901 return err; 2902} 2903 2904static void b43_op_configure_filter(struct ieee80211_hw *hw, 2905 unsigned int changed, unsigned int *fflags, 2906 int mc_count, struct dev_addr_list *mc_list) 2907{ 2908 struct b43_wl *wl = hw_to_b43_wl(hw); 2909 struct b43_wldev *dev = wl->current_dev; 2910 unsigned long flags; 2911 2912 if (!dev) { 2913 *fflags = 0; 2914 return; 2915 } 2916 2917 spin_lock_irqsave(&wl->irq_lock, flags); 2918 *fflags &= FIF_PROMISC_IN_BSS | 2919 FIF_ALLMULTI | 2920 FIF_FCSFAIL | 2921 FIF_PLCPFAIL | 2922 FIF_CONTROL | 2923 FIF_OTHER_BSS | 2924 FIF_BCN_PRBRESP_PROMISC; 2925 2926 changed &= FIF_PROMISC_IN_BSS | 2927 FIF_ALLMULTI | 2928 FIF_FCSFAIL | 2929 FIF_PLCPFAIL | 2930 FIF_CONTROL | 2931 FIF_OTHER_BSS | 2932 FIF_BCN_PRBRESP_PROMISC; 2933 2934 wl->filter_flags = *fflags; 2935 2936 if (changed && b43_status(dev) >= B43_STAT_INITIALIZED) 2937 b43_adjust_opmode(dev); 2938 spin_unlock_irqrestore(&wl->irq_lock, flags); 2939} 2940 2941static int b43_op_config_interface(struct ieee80211_hw *hw, 2942 int if_id, 2943 struct ieee80211_if_conf *conf) 2944{ 2945 struct b43_wl *wl = hw_to_b43_wl(hw); 2946 struct b43_wldev *dev = wl->current_dev; 2947 unsigned long flags; 2948 2949 if (!dev) 2950 return -ENODEV; 2951 mutex_lock(&wl->mutex); 2952 spin_lock_irqsave(&wl->irq_lock, flags); 2953 B43_WARN_ON(wl->if_id != if_id); 2954 if (conf->bssid) 2955 memcpy(wl->bssid, conf->bssid, ETH_ALEN); 2956 else 2957 memset(wl->bssid, 0, ETH_ALEN); 2958 if (b43_status(dev) >= B43_STAT_INITIALIZED) { 2959 if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) { 2960 B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP); 2961 b43_set_ssid(dev, conf->ssid, conf->ssid_len); 2962 if (conf->beacon) 2963 b43_refresh_templates(dev, conf->beacon); 2964 } 2965 b43_write_mac_bssid_templates(dev); 2966 } 2967 spin_unlock_irqrestore(&wl->irq_lock, flags); 2968 mutex_unlock(&wl->mutex); 2969 2970 return 0; 2971} 2972 2973/* Locking: wl->mutex */ 2974static void b43_wireless_core_stop(struct b43_wldev *dev) 2975{ 2976 struct b43_wl *wl = dev->wl; 2977 unsigned long flags; 2978 2979 if (b43_status(dev) < B43_STAT_STARTED) 2980 return; 2981 2982 /* Disable and sync interrupts. We must do this before than 2983 * setting the status to INITIALIZED, as the interrupt handler 2984 * won't care about IRQs then. */ 2985 spin_lock_irqsave(&wl->irq_lock, flags); 2986 dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL); 2987 b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */ 2988 spin_unlock_irqrestore(&wl->irq_lock, flags); 2989 b43_synchronize_irq(dev); 2990 2991 b43_set_status(dev, B43_STAT_INITIALIZED); 2992 2993 mutex_unlock(&wl->mutex); 2994 /* Must unlock as it would otherwise deadlock. No races here. 2995 * Cancel the possibly running self-rearming periodic work. */ 2996 cancel_delayed_work_sync(&dev->periodic_work); 2997 mutex_lock(&wl->mutex); 2998 2999 ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy. 3000 3001 b43_mac_suspend(dev); 3002 free_irq(dev->dev->irq, dev); 3003 b43dbg(wl, "Wireless interface stopped\n"); 3004} 3005 3006/* Locking: wl->mutex */ 3007static int b43_wireless_core_start(struct b43_wldev *dev) 3008{ 3009 int err; 3010 3011 B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED); 3012 3013 drain_txstatus_queue(dev); 3014 err = request_irq(dev->dev->irq, b43_interrupt_handler, 3015 IRQF_SHARED, KBUILD_MODNAME, dev); 3016 if (err) { 3017 b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq); 3018 goto out; 3019 } 3020 3021 /* We are ready to run. */ 3022 b43_set_status(dev, B43_STAT_STARTED); 3023 3024 /* Start data flow (TX/RX). */ 3025 b43_mac_enable(dev); 3026 b43_interrupt_enable(dev, dev->irq_savedstate); 3027 ieee80211_start_queues(dev->wl->hw); 3028 3029 /* Start maintainance work */ 3030 b43_periodic_tasks_setup(dev); 3031 3032 b43dbg(dev->wl, "Wireless interface started\n"); 3033 out: 3034 return err; 3035} 3036 3037/* Get PHY and RADIO versioning numbers */ 3038static int b43_phy_versioning(struct b43_wldev *dev) 3039{ 3040 struct b43_phy *phy = &dev->phy; 3041 u32 tmp; 3042 u8 analog_type; 3043 u8 phy_type; 3044 u8 phy_rev; 3045 u16 radio_manuf; 3046 u16 radio_ver; 3047 u16 radio_rev; 3048 int unsupported = 0; 3049 3050 /* Get PHY versioning */ 3051 tmp = b43_read16(dev, B43_MMIO_PHY_VER); 3052 analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT; 3053 phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT; 3054 phy_rev = (tmp & B43_PHYVER_VERSION); 3055 switch (phy_type) { 3056 case B43_PHYTYPE_A: 3057 if (phy_rev >= 4) 3058 unsupported = 1; 3059 break; 3060 case B43_PHYTYPE_B: 3061 if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6 3062 && phy_rev != 7) 3063 unsupported = 1; 3064 break; 3065 case B43_PHYTYPE_G: 3066 if (phy_rev > 8) 3067 unsupported = 1; 3068 break; 3069 default: 3070 unsupported = 1; 3071 }; 3072 if (unsupported) { 3073 b43err(dev->wl, "FOUND UNSUPPORTED PHY " 3074 "(Analog %u, Type %u, Revision %u)\n", 3075 analog_type, phy_type, phy_rev); 3076 return -EOPNOTSUPP; 3077 } 3078 b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n", 3079 analog_type, phy_type, phy_rev); 3080 3081 /* Get RADIO versioning */ 3082 if (dev->dev->bus->chip_id == 0x4317) { 3083 if (dev->dev->bus->chip_rev == 0) 3084 tmp = 0x3205017F; 3085 else if (dev->dev->bus->chip_rev == 1) 3086 tmp = 0x4205017F; 3087 else 3088 tmp = 0x5205017F; 3089 } else { 3090 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); 3091 tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH); 3092 tmp <<= 16; 3093 b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID); 3094 tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW); 3095 } 3096 radio_manuf = (tmp & 0x00000FFF); 3097 radio_ver = (tmp & 0x0FFFF000) >> 12; 3098 radio_rev = (tmp & 0xF0000000) >> 28; 3099 switch (phy_type) { 3100 case B43_PHYTYPE_A: 3101 if (radio_ver != 0x2060) 3102 unsupported = 1; 3103 if (radio_rev != 1) 3104 unsupported = 1; 3105 if (radio_manuf != 0x17F) 3106 unsupported = 1; 3107 break; 3108 case B43_PHYTYPE_B: 3109 if ((radio_ver & 0xFFF0) != 0x2050) 3110 unsupported = 1; 3111 break; 3112 case B43_PHYTYPE_G: 3113 if (radio_ver != 0x2050) 3114 unsupported = 1; 3115 break; 3116 default: 3117 B43_WARN_ON(1); 3118 } 3119 if (unsupported) { 3120 b43err(dev->wl, "FOUND UNSUPPORTED RADIO " 3121 "(Manuf 0x%X, Version 0x%X, Revision %u)\n", 3122 radio_manuf, radio_ver, radio_rev); 3123 return -EOPNOTSUPP; 3124 } 3125 b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n", 3126 radio_manuf, radio_ver, radio_rev); 3127 3128 phy->radio_manuf = radio_manuf; 3129 phy->radio_ver = radio_ver; 3130 phy->radio_rev = radio_rev; 3131 3132 phy->analog = analog_type; 3133 phy->type = phy_type; 3134 phy->rev = phy_rev; 3135 3136 return 0; 3137} 3138 3139static void setup_struct_phy_for_init(struct b43_wldev *dev, 3140 struct b43_phy *phy) 3141{ 3142 struct b43_txpower_lo_control *lo; 3143 int i; 3144 3145 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); 3146 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); 3147 3148 /* Flags */ 3149 phy->locked = 0; 3150 3151 phy->aci_enable = 0; 3152 phy->aci_wlan_automatic = 0; 3153 phy->aci_hw_rssi = 0; 3154 3155 phy->radio_off_context.valid = 0; 3156 3157 lo = phy->lo_control; 3158 if (lo) { 3159 memset(lo, 0, sizeof(*(phy->lo_control))); 3160 lo->rebuild = 1; 3161 lo->tx_bias = 0xFF; 3162 } 3163 phy->max_lb_gain = 0; 3164 phy->trsw_rx_gain = 0; 3165 phy->txpwr_offset = 0; 3166 3167 /* NRSSI */ 3168 phy->nrssislope = 0; 3169 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) 3170 phy->nrssi[i] = -1000; 3171 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) 3172 phy->nrssi_lt[i] = i; 3173 3174 phy->lofcal = 0xFFFF; 3175 phy->initval = 0xFFFF; 3176 3177 spin_lock_init(&phy->lock); 3178 phy->interfmode = B43_INTERFMODE_NONE; 3179 phy->channel = 0xFF; 3180 3181 phy->hardware_power_control = !!modparam_hwpctl; 3182} 3183 3184static void setup_struct_wldev_for_init(struct b43_wldev *dev) 3185{ 3186 /* Flags */ 3187 dev->reg124_set_0x4 = 0; 3188 /* Assume the radio is enabled. If it's not enabled, the state will 3189 * immediately get fixed on the first periodic work run. */ 3190 dev->radio_hw_enable = 1; 3191 3192 /* Stats */ 3193 memset(&dev->stats, 0, sizeof(dev->stats)); 3194 3195 setup_struct_phy_for_init(dev, &dev->phy); 3196 3197 /* IRQ related flags */ 3198 dev->irq_reason = 0; 3199 memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); 3200 dev->irq_savedstate = B43_IRQ_MASKTEMPLATE; 3201 3202 dev->mac_suspended = 1; 3203 3204 /* Noise calculation context */ 3205 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); 3206} 3207 3208static void b43_bluetooth_coext_enable(struct b43_wldev *dev) 3209{ 3210 struct ssb_sprom *sprom = &dev->dev->bus->sprom; 3211 u32 hf; 3212 3213 if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST)) 3214 return; 3215 if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode) 3216 return; 3217 3218 hf = b43_hf_read(dev); 3219 if (sprom->boardflags_lo & B43_BFL_BTCMOD) 3220 hf |= B43_HF_BTCOEXALT; 3221 else 3222 hf |= B43_HF_BTCOEX; 3223 b43_hf_write(dev, hf); 3224 //TODO 3225} 3226 3227static void b43_bluetooth_coext_disable(struct b43_wldev *dev) 3228{ //TODO 3229} 3230 3231static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev) 3232{ 3233#ifdef CONFIG_SSB_DRIVER_PCICORE 3234 struct ssb_bus *bus = dev->dev->bus; 3235 u32 tmp; 3236 3237 if (bus->pcicore.dev && 3238 bus->pcicore.dev->id.coreid == SSB_DEV_PCI && 3239 bus->pcicore.dev->id.revision <= 5) { 3240 /* IMCFGLO timeouts workaround. */ 3241 tmp = ssb_read32(dev->dev, SSB_IMCFGLO); 3242 tmp &= ~SSB_IMCFGLO_REQTO; 3243 tmp &= ~SSB_IMCFGLO_SERTO; 3244 switch (bus->bustype) { 3245 case SSB_BUSTYPE_PCI: 3246 case SSB_BUSTYPE_PCMCIA: 3247 tmp |= 0x32; 3248 break; 3249 case SSB_BUSTYPE_SSB: 3250 tmp |= 0x53; 3251 break; 3252 } 3253 ssb_write32(dev->dev, SSB_IMCFGLO, tmp); 3254 } 3255#endif /* CONFIG_SSB_DRIVER_PCICORE */ 3256} 3257 3258/* Write the short and long frame retry limit values. */ 3259static void b43_set_retry_limits(struct b43_wldev *dev, 3260 unsigned int short_retry, 3261 unsigned int long_retry) 3262{ 3263 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing 3264 * the chip-internal counter. */ 3265 short_retry = min(short_retry, (unsigned int)0xF); 3266 long_retry = min(long_retry, (unsigned int)0xF); 3267 3268 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT, 3269 short_retry); 3270 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT, 3271 long_retry); 3272} 3273 3274/* Shutdown a wireless core */ 3275/* Locking: wl->mutex */ 3276static void b43_wireless_core_exit(struct b43_wldev *dev) 3277{ 3278 struct b43_phy *phy = &dev->phy; 3279 3280 B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED); 3281 if (b43_status(dev) != B43_STAT_INITIALIZED) 3282 return; 3283 b43_set_status(dev, B43_STAT_UNINIT); 3284 3285 b43_leds_exit(dev); 3286 b43_rng_exit(dev->wl); 3287 b43_pio_free(dev); 3288 b43_dma_free(dev); 3289 b43_chip_exit(dev); 3290 b43_radio_turn_off(dev, 1); 3291 b43_switch_analog(dev, 0); 3292 if (phy->dyn_tssi_tbl) 3293 kfree(phy->tssi2dbm); 3294 kfree(phy->lo_control); 3295 phy->lo_control = NULL; 3296 ssb_device_disable(dev->dev, 0); 3297 ssb_bus_may_powerdown(dev->dev->bus); 3298} 3299 3300/* Initialize a wireless core */ 3301static int b43_wireless_core_init(struct b43_wldev *dev) 3302{ 3303 struct b43_wl *wl = dev->wl; 3304 struct ssb_bus *bus = dev->dev->bus; 3305 struct ssb_sprom *sprom = &bus->sprom; 3306 struct b43_phy *phy = &dev->phy; 3307 int err; 3308 u32 hf, tmp; 3309 3310 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); 3311 3312 err = ssb_bus_powerup(bus, 0); 3313 if (err) 3314 goto out; 3315 if (!ssb_device_is_enabled(dev->dev)) { 3316 tmp = phy->gmode ? B43_TMSLOW_GMODE : 0; 3317 b43_wireless_core_reset(dev, tmp); 3318 } 3319 3320 if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) { 3321 phy->lo_control = 3322 kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL); 3323 if (!phy->lo_control) { 3324 err = -ENOMEM; 3325 goto err_busdown; 3326 } 3327 } 3328 setup_struct_wldev_for_init(dev); 3329 3330 err = b43_phy_init_tssi2dbm_table(dev); 3331 if (err) 3332 goto err_kfree_lo_control; 3333 3334 /* Enable IRQ routing to this device. */ 3335 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev); 3336 3337 b43_imcfglo_timeouts_workaround(dev); 3338 b43_bluetooth_coext_disable(dev); 3339 b43_phy_early_init(dev); 3340 err = b43_chip_init(dev); 3341 if (err) 3342 goto err_kfree_tssitbl; 3343 b43_shm_write16(dev, B43_SHM_SHARED, 3344 B43_SHM_SH_WLCOREREV, dev->dev->id.revision); 3345 hf = b43_hf_read(dev); 3346 if (phy->type == B43_PHYTYPE_G) { 3347 hf |= B43_HF_SYMW; 3348 if (phy->rev == 1) 3349 hf |= B43_HF_GDCW; 3350 if (sprom->boardflags_lo & B43_BFL_PACTRL) 3351 hf |= B43_HF_OFDMPABOOST; 3352 } else if (phy->type == B43_PHYTYPE_B) { 3353 hf |= B43_HF_SYMW; 3354 if (phy->rev >= 2 && phy->radio_ver == 0x2050) 3355 hf &= ~B43_HF_GDCW; 3356 } 3357 b43_hf_write(dev, hf); 3358 3359 b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT, 3360 B43_DEFAULT_LONG_RETRY_LIMIT); 3361 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3); 3362 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2); 3363 3364 /* Disable sending probe responses from firmware. 3365 * Setting the MaxTime to one usec will always trigger 3366 * a timeout, so we never send any probe resp. 3367 * A timeout of zero is infinite. */ 3368 b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1); 3369 3370 b43_rate_memory_init(dev); 3371 3372 /* Minimum Contention Window */ 3373 if (phy->type == B43_PHYTYPE_B) { 3374 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F); 3375 } else { 3376 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF); 3377 } 3378 /* Maximum Contention Window */ 3379 b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF); 3380 3381 do { 3382 if (b43_using_pio(dev)) { 3383 err = b43_pio_init(dev); 3384 } else { 3385 err = b43_dma_init(dev); 3386 if (!err) 3387 b43_qos_init(dev); 3388 } 3389 } while (err == -EAGAIN); 3390 if (err) 3391 goto err_chip_exit; 3392 3393//FIXME 3394#if 1 3395 b43_write16(dev, 0x0612, 0x0050); 3396 b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050); 3397 b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4); 3398#endif 3399 3400 b43_bluetooth_coext_enable(dev); 3401 3402 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ 3403 memset(wl->bssid, 0, ETH_ALEN); 3404 memset(wl->mac_addr, 0, ETH_ALEN); 3405 b43_upload_card_macaddress(dev); 3406 b43_security_init(dev); 3407 b43_rng_init(wl); 3408 3409 b43_set_status(dev, B43_STAT_INITIALIZED); 3410 3411 b43_leds_init(dev); 3412out: 3413 return err; 3414 3415 err_chip_exit: 3416 b43_chip_exit(dev); 3417 err_kfree_tssitbl: 3418 if (phy->dyn_tssi_tbl) 3419 kfree(phy->tssi2dbm); 3420 err_kfree_lo_control: 3421 kfree(phy->lo_control); 3422 phy->lo_control = NULL; 3423 err_busdown: 3424 ssb_bus_may_powerdown(bus); 3425 B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT); 3426 return err; 3427} 3428 3429static int b43_op_add_interface(struct ieee80211_hw *hw, 3430 struct ieee80211_if_init_conf *conf) 3431{ 3432 struct b43_wl *wl = hw_to_b43_wl(hw); 3433 struct b43_wldev *dev; 3434 unsigned long flags; 3435 int err = -EOPNOTSUPP; 3436 3437 /* TODO: allow WDS/AP devices to coexist */ 3438 3439 if (conf->type != IEEE80211_IF_TYPE_AP && 3440 conf->type != IEEE80211_IF_TYPE_STA && 3441 conf->type != IEEE80211_IF_TYPE_WDS && 3442 conf->type != IEEE80211_IF_TYPE_IBSS) 3443 return -EOPNOTSUPP; 3444 3445 mutex_lock(&wl->mutex); 3446 if (wl->operating) 3447 goto out_mutex_unlock; 3448 3449 b43dbg(wl, "Adding Interface type %d\n", conf->type); 3450 3451 dev = wl->current_dev; 3452 wl->operating = 1; 3453 wl->if_id = conf->if_id; 3454 wl->if_type = conf->type; 3455 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN); 3456 3457 spin_lock_irqsave(&wl->irq_lock, flags); 3458 b43_adjust_opmode(dev); 3459 b43_upload_card_macaddress(dev); 3460 spin_unlock_irqrestore(&wl->irq_lock, flags); 3461 3462 err = 0; 3463 out_mutex_unlock: 3464 mutex_unlock(&wl->mutex); 3465 3466 return err; 3467} 3468 3469static void b43_op_remove_interface(struct ieee80211_hw *hw, 3470 struct ieee80211_if_init_conf *conf) 3471{ 3472 struct b43_wl *wl = hw_to_b43_wl(hw); 3473 struct b43_wldev *dev = wl->current_dev; 3474 unsigned long flags; 3475 3476 b43dbg(wl, "Removing Interface type %d\n", conf->type); 3477 3478 mutex_lock(&wl->mutex); 3479 3480 B43_WARN_ON(!wl->operating); 3481 B43_WARN_ON(wl->if_id != conf->if_id); 3482 3483 wl->operating = 0; 3484 3485 spin_lock_irqsave(&wl->irq_lock, flags); 3486 b43_adjust_opmode(dev); 3487 memset(wl->mac_addr, 0, ETH_ALEN); 3488 b43_upload_card_macaddress(dev); 3489 spin_unlock_irqrestore(&wl->irq_lock, flags); 3490 3491 mutex_unlock(&wl->mutex); 3492} 3493 3494static int b43_op_start(struct ieee80211_hw *hw) 3495{ 3496 struct b43_wl *wl = hw_to_b43_wl(hw); 3497 struct b43_wldev *dev = wl->current_dev; 3498 int did_init = 0; 3499 int err = 0; 3500 3501 /* First register RFkill. 3502 * LEDs that are registered later depend on it. */ 3503 b43_rfkill_init(dev); 3504 3505 mutex_lock(&wl->mutex); 3506 3507 if (b43_status(dev) < B43_STAT_INITIALIZED) { 3508 err = b43_wireless_core_init(dev); 3509 if (err) 3510 goto out_mutex_unlock; 3511 did_init = 1; 3512 } 3513 3514 if (b43_status(dev) < B43_STAT_STARTED) { 3515 err = b43_wireless_core_start(dev); 3516 if (err) { 3517 if (did_init) 3518 b43_wireless_core_exit(dev); 3519 goto out_mutex_unlock; 3520 } 3521 } 3522 3523 out_mutex_unlock: 3524 mutex_unlock(&wl->mutex); 3525 3526 return err; 3527} 3528 3529static void b43_op_stop(struct ieee80211_hw *hw) 3530{ 3531 struct b43_wl *wl = hw_to_b43_wl(hw); 3532 struct b43_wldev *dev = wl->current_dev; 3533 3534 b43_rfkill_exit(dev); 3535 3536 mutex_lock(&wl->mutex); 3537 if (b43_status(dev) >= B43_STAT_STARTED) 3538 b43_wireless_core_stop(dev); 3539 b43_wireless_core_exit(dev); 3540 mutex_unlock(&wl->mutex); 3541} 3542 3543static int b43_op_set_retry_limit(struct ieee80211_hw *hw, 3544 u32 short_retry_limit, u32 long_retry_limit) 3545{ 3546 struct b43_wl *wl = hw_to_b43_wl(hw); 3547 struct b43_wldev *dev; 3548 int err = 0; 3549 3550 mutex_lock(&wl->mutex); 3551 dev = wl->current_dev; 3552 if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) { 3553 err = -ENODEV; 3554 goto out_unlock; 3555 } 3556 b43_set_retry_limits(dev, short_retry_limit, long_retry_limit); 3557out_unlock: 3558 mutex_unlock(&wl->mutex); 3559 3560 return err; 3561} 3562 3563static const struct ieee80211_ops b43_hw_ops = { 3564 .tx = b43_op_tx, 3565 .conf_tx = b43_op_conf_tx, 3566 .add_interface = b43_op_add_interface, 3567 .remove_interface = b43_op_remove_interface, 3568 .config = b43_op_config, 3569 .config_interface = b43_op_config_interface, 3570 .configure_filter = b43_op_configure_filter, 3571 .set_key = b43_op_set_key, 3572 .get_stats = b43_op_get_stats, 3573 .get_tx_stats = b43_op_get_tx_stats, 3574 .start = b43_op_start, 3575 .stop = b43_op_stop, 3576 .set_retry_limit = b43_op_set_retry_limit, 3577}; 3578 3579/* Hard-reset the chip. Do not call this directly. 3580 * Use b43_controller_restart() 3581 */ 3582static void b43_chip_reset(struct work_struct *work) 3583{ 3584 struct b43_wldev *dev = 3585 container_of(work, struct b43_wldev, restart_work); 3586 struct b43_wl *wl = dev->wl; 3587 int err = 0; 3588 int prev_status; 3589 3590 mutex_lock(&wl->mutex); 3591 3592 prev_status = b43_status(dev); 3593 /* Bring the device down... */ 3594 if (prev_status >= B43_STAT_STARTED) 3595 b43_wireless_core_stop(dev); 3596 if (prev_status >= B43_STAT_INITIALIZED) 3597 b43_wireless_core_exit(dev); 3598 3599 /* ...and up again. */ 3600 if (prev_status >= B43_STAT_INITIALIZED) { 3601 err = b43_wireless_core_init(dev); 3602 if (err) 3603 goto out; 3604 } 3605 if (prev_status >= B43_STAT_STARTED) { 3606 err = b43_wireless_core_start(dev); 3607 if (err) { 3608 b43_wireless_core_exit(dev); 3609 goto out; 3610 } 3611 } 3612 out: 3613 mutex_unlock(&wl->mutex); 3614 if (err) 3615 b43err(wl, "Controller restart FAILED\n"); 3616 else 3617 b43info(wl, "Controller restarted\n"); 3618} 3619 3620static int b43_setup_modes(struct b43_wldev *dev, 3621 int have_aphy, int have_bphy, int have_gphy) 3622{ 3623 struct ieee80211_hw *hw = dev->wl->hw; 3624 struct ieee80211_hw_mode *mode; 3625 struct b43_phy *phy = &dev->phy; 3626 int cnt = 0; 3627 int err; 3628 3629/*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */ 3630 have_aphy = 0; 3631 3632 phy->possible_phymodes = 0; 3633 for (; 1; cnt++) { 3634 if (have_aphy) { 3635 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); 3636 mode = &phy->hwmodes[cnt]; 3637 3638 mode->mode = MODE_IEEE80211A; 3639 mode->num_channels = b43_a_chantable_size; 3640 mode->channels = b43_a_chantable; 3641 mode->num_rates = b43_a_ratetable_size; 3642 mode->rates = b43_a_ratetable; 3643 err = ieee80211_register_hwmode(hw, mode); 3644 if (err) 3645 return err; 3646 3647 phy->possible_phymodes |= B43_PHYMODE_A; 3648 have_aphy = 0; 3649 continue; 3650 } 3651 if (have_bphy) { 3652 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); 3653 mode = &phy->hwmodes[cnt]; 3654 3655 mode->mode = MODE_IEEE80211B; 3656 mode->num_channels = b43_bg_chantable_size; 3657 mode->channels = b43_bg_chantable; 3658 mode->num_rates = b43_b_ratetable_size; 3659 mode->rates = b43_b_ratetable; 3660 err = ieee80211_register_hwmode(hw, mode); 3661 if (err) 3662 return err; 3663 3664 phy->possible_phymodes |= B43_PHYMODE_B; 3665 have_bphy = 0; 3666 continue; 3667 } 3668 if (have_gphy) { 3669 B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES); 3670 mode = &phy->hwmodes[cnt]; 3671 3672 mode->mode = MODE_IEEE80211G; 3673 mode->num_channels = b43_bg_chantable_size; 3674 mode->channels = b43_bg_chantable; 3675 mode->num_rates = b43_g_ratetable_size; 3676 mode->rates = b43_g_ratetable; 3677 err = ieee80211_register_hwmode(hw, mode); 3678 if (err) 3679 return err; 3680 3681 phy->possible_phymodes |= B43_PHYMODE_G; 3682 have_gphy = 0; 3683 continue; 3684 } 3685 break; 3686 } 3687 3688 return 0; 3689} 3690 3691static void b43_wireless_core_detach(struct b43_wldev *dev) 3692{ 3693 /* We release firmware that late to not be required to re-request 3694 * is all the time when we reinit the core. */ 3695 b43_release_firmware(dev); 3696} 3697 3698static int b43_wireless_core_attach(struct b43_wldev *dev) 3699{ 3700 struct b43_wl *wl = dev->wl; 3701 struct ssb_bus *bus = dev->dev->bus; 3702 struct pci_dev *pdev = bus->host_pci; 3703 int err; 3704 int have_aphy = 0, have_bphy = 0, have_gphy = 0; 3705 u32 tmp; 3706 3707 /* Do NOT do any device initialization here. 3708 * Do it in wireless_core_init() instead. 3709 * This function is for gathering basic information about the HW, only. 3710 * Also some structs may be set up here. But most likely you want to have 3711 * that in core_init(), too. 3712 */ 3713 3714 err = ssb_bus_powerup(bus, 0); 3715 if (err) { 3716 b43err(wl, "Bus powerup failed\n"); 3717 goto out; 3718 } 3719 /* Get the PHY type. */ 3720 if (dev->dev->id.revision >= 5) { 3721 u32 tmshigh; 3722 3723 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); 3724 have_aphy = !!(tmshigh & B43_TMSHIGH_APHY); 3725 have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY); 3726 if (!have_aphy && !have_gphy) 3727 have_bphy = 1; 3728 } else if (dev->dev->id.revision == 4) { 3729 have_gphy = 1; 3730 have_aphy = 1; 3731 } else 3732 have_bphy = 1; 3733 3734 dev->phy.gmode = (have_gphy || have_bphy); 3735 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0; 3736 b43_wireless_core_reset(dev, tmp); 3737 3738 err = b43_phy_versioning(dev); 3739 if (err) 3740 goto err_powerdown; 3741 /* Check if this device supports multiband. */ 3742 if (!pdev || 3743 (pdev->device != 0x4312 && 3744 pdev->device != 0x4319 && pdev->device != 0x4324)) { 3745 /* No multiband support. */ 3746 have_aphy = 0; 3747 have_bphy = 0; 3748 have_gphy = 0; 3749 switch (dev->phy.type) { 3750 case B43_PHYTYPE_A: 3751 have_aphy = 1; 3752 break; 3753 case B43_PHYTYPE_B: 3754 have_bphy = 1; 3755 break; 3756 case B43_PHYTYPE_G: 3757 have_gphy = 1; 3758 break; 3759 default: 3760 B43_WARN_ON(1); 3761 } 3762 } 3763 dev->phy.gmode = (have_gphy || have_bphy); 3764 tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0; 3765 b43_wireless_core_reset(dev, tmp); 3766 3767 err = b43_validate_chipaccess(dev); 3768 if (err) 3769 goto err_powerdown; 3770 err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy); 3771 if (err) 3772 goto err_powerdown; 3773 3774 /* Now set some default "current_dev" */ 3775 if (!wl->current_dev) 3776 wl->current_dev = dev; 3777 INIT_WORK(&dev->restart_work, b43_chip_reset); 3778 3779 b43_radio_turn_off(dev, 1); 3780 b43_switch_analog(dev, 0); 3781 ssb_device_disable(dev->dev, 0); 3782 ssb_bus_may_powerdown(bus); 3783 3784out: 3785 return err; 3786 3787err_powerdown: 3788 ssb_bus_may_powerdown(bus); 3789 return err; 3790} 3791 3792static void b43_one_core_detach(struct ssb_device *dev) 3793{ 3794 struct b43_wldev *wldev; 3795 struct b43_wl *wl; 3796 3797 wldev = ssb_get_drvdata(dev); 3798 wl = wldev->wl; 3799 cancel_work_sync(&wldev->restart_work); 3800 b43_debugfs_remove_device(wldev); 3801 b43_wireless_core_detach(wldev); 3802 list_del(&wldev->list); 3803 wl->nr_devs--; 3804 ssb_set_drvdata(dev, NULL); 3805 kfree(wldev); 3806} 3807 3808static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl) 3809{ 3810 struct b43_wldev *wldev; 3811 struct pci_dev *pdev; 3812 int err = -ENOMEM; 3813 3814 if (!list_empty(&wl->devlist)) { 3815 /* We are not the first core on this chip. */ 3816 pdev = dev->bus->host_pci; 3817 /* Only special chips support more than one wireless 3818 * core, although some of the other chips have more than 3819 * one wireless core as well. Check for this and 3820 * bail out early. 3821 */ 3822 if (!pdev || 3823 ((pdev->device != 0x4321) && 3824 (pdev->device != 0x4313) && (pdev->device != 0x431A))) { 3825 b43dbg(wl, "Ignoring unconnected 802.11 core\n"); 3826 return -ENODEV; 3827 } 3828 } 3829 3830 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); 3831 if (!wldev) 3832 goto out; 3833 3834 wldev->dev = dev; 3835 wldev->wl = wl; 3836 b43_set_status(wldev, B43_STAT_UNINIT); 3837 wldev->bad_frames_preempt = modparam_bad_frames_preempt; 3838 tasklet_init(&wldev->isr_tasklet, 3839 (void (*)(unsigned long))b43_interrupt_tasklet, 3840 (unsigned long)wldev); 3841 if (modparam_pio) 3842 wldev->__using_pio = 1; 3843 INIT_LIST_HEAD(&wldev->list); 3844 3845 err = b43_wireless_core_attach(wldev); 3846 if (err) 3847 goto err_kfree_wldev; 3848 3849 list_add(&wldev->list, &wl->devlist); 3850 wl->nr_devs++; 3851 ssb_set_drvdata(dev, wldev); 3852 b43_debugfs_add_device(wldev); 3853 3854 out: 3855 return err; 3856 3857 err_kfree_wldev: 3858 kfree(wldev); 3859 return err; 3860} 3861 3862static void b43_sprom_fixup(struct ssb_bus *bus) 3863{ 3864 /* boardflags workarounds */ 3865 if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL && 3866 bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74) 3867 bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST; 3868 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && 3869 bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40) 3870 bus->sprom.boardflags_lo |= B43_BFL_PACTRL; 3871 3872 /* Handle case when gain is not set in sprom */ 3873 if (bus->sprom.antenna_gain_a == 0xFF) 3874 bus->sprom.antenna_gain_a = 2; 3875 if (bus->sprom.antenna_gain_bg == 0xFF) 3876 bus->sprom.antenna_gain_bg = 2; 3877 3878 /* Convert Antennagain values to Q5.2 */ 3879 bus->sprom.antenna_gain_a <<= 2; 3880 bus->sprom.antenna_gain_bg <<= 2; 3881} 3882 3883static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl) 3884{ 3885 struct ieee80211_hw *hw = wl->hw; 3886 3887 ssb_set_devtypedata(dev, NULL); 3888 ieee80211_free_hw(hw); 3889} 3890 3891static int b43_wireless_init(struct ssb_device *dev) 3892{ 3893 struct ssb_sprom *sprom = &dev->bus->sprom; 3894 struct ieee80211_hw *hw; 3895 struct b43_wl *wl; 3896 int err = -ENOMEM; 3897 3898 b43_sprom_fixup(dev->bus); 3899 3900 hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops); 3901 if (!hw) { 3902 b43err(NULL, "Could not allocate ieee80211 device\n"); 3903 goto out; 3904 } 3905 3906 /* fill hw info */ 3907 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE | 3908 IEEE80211_HW_RX_INCLUDES_FCS; 3909 hw->max_signal = 100; 3910 hw->max_rssi = -110; 3911 hw->max_noise = -110; 3912 hw->queues = 1; /* FIXME: hardware has more queues */ 3913 SET_IEEE80211_DEV(hw, dev->dev); 3914 if (is_valid_ether_addr(sprom->et1mac)) 3915 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); 3916 else 3917 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); 3918 3919 /* Get and initialize struct b43_wl */ 3920 wl = hw_to_b43_wl(hw); 3921 memset(wl, 0, sizeof(*wl)); 3922 wl->hw = hw; 3923 spin_lock_init(&wl->irq_lock); 3924 spin_lock_init(&wl->leds_lock); 3925 mutex_init(&wl->mutex); 3926 INIT_LIST_HEAD(&wl->devlist); 3927 3928 ssb_set_devtypedata(dev, wl); 3929 b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id); 3930 err = 0; 3931 out: 3932 return err; 3933} 3934 3935static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id) 3936{ 3937 struct b43_wl *wl; 3938 int err; 3939 int first = 0; 3940 3941 wl = ssb_get_devtypedata(dev); 3942 if (!wl) { 3943 /* Probing the first core. Must setup common struct b43_wl */ 3944 first = 1; 3945 err = b43_wireless_init(dev); 3946 if (err) 3947 goto out; 3948 wl = ssb_get_devtypedata(dev); 3949 B43_WARN_ON(!wl); 3950 } 3951 err = b43_one_core_attach(dev, wl); 3952 if (err) 3953 goto err_wireless_exit; 3954 3955 if (first) { 3956 err = ieee80211_register_hw(wl->hw); 3957 if (err) 3958 goto err_one_core_detach; 3959 } 3960 3961 out: 3962 return err; 3963 3964 err_one_core_detach: 3965 b43_one_core_detach(dev); 3966 err_wireless_exit: 3967 if (first) 3968 b43_wireless_exit(dev, wl); 3969 return err; 3970} 3971 3972static void b43_remove(struct ssb_device *dev) 3973{ 3974 struct b43_wl *wl = ssb_get_devtypedata(dev); 3975 struct b43_wldev *wldev = ssb_get_drvdata(dev); 3976 3977 B43_WARN_ON(!wl); 3978 if (wl->current_dev == wldev) 3979 ieee80211_unregister_hw(wl->hw); 3980 3981 b43_one_core_detach(dev); 3982 3983 if (list_empty(&wl->devlist)) { 3984 /* Last core on the chip unregistered. 3985 * We can destroy common struct b43_wl. 3986 */ 3987 b43_wireless_exit(dev, wl); 3988 } 3989} 3990 3991/* Perform a hardware reset. This can be called from any context. */ 3992void b43_controller_restart(struct b43_wldev *dev, const char *reason) 3993{ 3994 /* Must avoid requeueing, if we are in shutdown. */ 3995 if (b43_status(dev) < B43_STAT_INITIALIZED) 3996 return; 3997 b43info(dev->wl, "Controller RESET (%s) ...\n", reason); 3998 queue_work(dev->wl->hw->workqueue, &dev->restart_work); 3999} 4000 4001#ifdef CONFIG_PM 4002 4003static int b43_suspend(struct ssb_device *dev, pm_message_t state) 4004{ 4005 struct b43_wldev *wldev = ssb_get_drvdata(dev); 4006 struct b43_wl *wl = wldev->wl; 4007 4008 b43dbg(wl, "Suspending...\n"); 4009 4010 mutex_lock(&wl->mutex); 4011 wldev->suspend_init_status = b43_status(wldev); 4012 if (wldev->suspend_init_status >= B43_STAT_STARTED) 4013 b43_wireless_core_stop(wldev); 4014 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) 4015 b43_wireless_core_exit(wldev); 4016 mutex_unlock(&wl->mutex); 4017 4018 b43dbg(wl, "Device suspended.\n"); 4019 4020 return 0; 4021} 4022 4023static int b43_resume(struct ssb_device *dev) 4024{ 4025 struct b43_wldev *wldev = ssb_get_drvdata(dev); 4026 struct b43_wl *wl = wldev->wl; 4027 int err = 0; 4028 4029 b43dbg(wl, "Resuming...\n"); 4030 4031 mutex_lock(&wl->mutex); 4032 if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) { 4033 err = b43_wireless_core_init(wldev); 4034 if (err) { 4035 b43err(wl, "Resume failed at core init\n"); 4036 goto out; 4037 } 4038 } 4039 if (wldev->suspend_init_status >= B43_STAT_STARTED) { 4040 err = b43_wireless_core_start(wldev); 4041 if (err) { 4042 b43_wireless_core_exit(wldev); 4043 b43err(wl, "Resume failed at core start\n"); 4044 goto out; 4045 } 4046 } 4047 mutex_unlock(&wl->mutex); 4048 4049 b43dbg(wl, "Device resumed.\n"); 4050 out: 4051 return err; 4052} 4053 4054#else /* CONFIG_PM */ 4055# define b43_suspend NULL 4056# define b43_resume NULL 4057#endif /* CONFIG_PM */ 4058 4059static struct ssb_driver b43_ssb_driver = { 4060 .name = KBUILD_MODNAME, 4061 .id_table = b43_ssb_tbl, 4062 .probe = b43_probe, 4063 .remove = b43_remove, 4064 .suspend = b43_suspend, 4065 .resume = b43_resume, 4066}; 4067 4068static int __init b43_init(void) 4069{ 4070 int err; 4071 4072 b43_debugfs_init(); 4073 err = b43_pcmcia_init(); 4074 if (err) 4075 goto err_dfs_exit; 4076 err = ssb_driver_register(&b43_ssb_driver); 4077 if (err) 4078 goto err_pcmcia_exit; 4079 4080 return err; 4081 4082err_pcmcia_exit: 4083 b43_pcmcia_exit(); 4084err_dfs_exit: 4085 b43_debugfs_exit(); 4086 return err; 4087} 4088 4089static void __exit b43_exit(void) 4090{ 4091 ssb_driver_unregister(&b43_ssb_driver); 4092 b43_pcmcia_exit(); 4093 b43_debugfs_exit(); 4094} 4095 4096module_init(b43_init) 4097module_exit(b43_exit) 4098