1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Broadcom B43legacy wireless driver 5 * 6 * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> 7 * Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it> 8 * Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch> 9 * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> 10 * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> 11 * Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> 12 * 13 * Some parts of the code in this file are derived from the ipw2200 14 * driver Copyright(c) 2003 - 2004 Intel Corporation. 15 16 */ 17 18 #include <linux/delay.h> 19 #include <linux/init.h> 20 #include <linux/module.h> 21 #include <linux/if_arp.h> 22 #include <linux/etherdevice.h> 23 #include <linux/firmware.h> 24 #include <linux/workqueue.h> 25 #include <linux/sched/signal.h> 26 #include <linux/skbuff.h> 27 #include <linux/dma-mapping.h> 28 #include <linux/slab.h> 29 #include <net/dst.h> 30 #include <asm/unaligned.h> 31 32 #include "b43legacy.h" 33 #include "main.h" 34 #include "debugfs.h" 35 #include "phy.h" 36 #include "dma.h" 37 #include "pio.h" 38 #include "sysfs.h" 39 #include "xmit.h" 40 #include "radio.h" 41 42 43 MODULE_DESCRIPTION("Broadcom B43legacy wireless driver"); 44 MODULE_AUTHOR("Martin Langer"); 45 MODULE_AUTHOR("Stefano Brivio"); 46 MODULE_AUTHOR("Michael Buesch"); 47 MODULE_LICENSE("GPL"); 48 49 MODULE_FIRMWARE("b43legacy/ucode2.fw"); 50 MODULE_FIRMWARE("b43legacy/ucode4.fw"); 51 52 #if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO) 53 static int modparam_pio; 54 module_param_named(pio, modparam_pio, int, 0444); 55 MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode"); 56 #elif defined(CONFIG_B43LEGACY_DMA) 57 # define modparam_pio 0 58 #elif defined(CONFIG_B43LEGACY_PIO) 59 # define modparam_pio 1 60 #endif 61 62 static int modparam_bad_frames_preempt; 63 module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); 64 MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames" 65 " Preemption"); 66 67 static char modparam_fwpostfix[16]; 68 module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); 69 MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load."); 70 71 /* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */ 72 static const struct ssb_device_id b43legacy_ssb_tbl[] = { 73 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2), 74 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4), 75 {}, 76 }; 77 MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl); 78 79 80 /* Channel and ratetables are shared for all devices. 81 * They can't be const, because ieee80211 puts some precalculated 82 * data in there. This data is the same for all devices, so we don't 83 * get concurrency issues */ 84 #define RATETAB_ENT(_rateid, _flags) \ 85 { \ 86 .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \ 87 .hw_value = (_rateid), \ 88 .flags = (_flags), \ 89 } 90 /* 91 * NOTE: When changing this, sync with xmit.c's 92 * b43legacy_plcp_get_bitrate_idx_* functions! 93 */ 94 static struct ieee80211_rate __b43legacy_ratetable[] = { 95 RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0), 96 RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE), 97 RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE), 98 RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE), 99 RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0), 100 RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0), 101 RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0), 102 RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0), 103 RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0), 104 RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0), 105 RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0), 106 RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0), 107 }; 108 #define b43legacy_b_ratetable (__b43legacy_ratetable + 0) 109 #define b43legacy_b_ratetable_size 4 110 #define b43legacy_g_ratetable (__b43legacy_ratetable + 0) 111 #define b43legacy_g_ratetable_size 12 112 113 #define CHANTAB_ENT(_chanid, _freq) \ 114 { \ 115 .center_freq = (_freq), \ 116 .hw_value = (_chanid), \ 117 } 118 static struct ieee80211_channel b43legacy_bg_chantable[] = { 119 CHANTAB_ENT(1, 2412), 120 CHANTAB_ENT(2, 2417), 121 CHANTAB_ENT(3, 2422), 122 CHANTAB_ENT(4, 2427), 123 CHANTAB_ENT(5, 2432), 124 CHANTAB_ENT(6, 2437), 125 CHANTAB_ENT(7, 2442), 126 CHANTAB_ENT(8, 2447), 127 CHANTAB_ENT(9, 2452), 128 CHANTAB_ENT(10, 2457), 129 CHANTAB_ENT(11, 2462), 130 CHANTAB_ENT(12, 2467), 131 CHANTAB_ENT(13, 2472), 132 CHANTAB_ENT(14, 2484), 133 }; 134 135 static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = { 136 .channels = b43legacy_bg_chantable, 137 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), 138 .bitrates = b43legacy_b_ratetable, 139 .n_bitrates = b43legacy_b_ratetable_size, 140 }; 141 142 static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = { 143 .channels = b43legacy_bg_chantable, 144 .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), 145 .bitrates = b43legacy_g_ratetable, 146 .n_bitrates = b43legacy_g_ratetable_size, 147 }; 148 149 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev); 150 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev); 151 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev); 152 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev); 153 154 155 static int b43legacy_ratelimit(struct b43legacy_wl *wl) 156 { 157 if (!wl || !wl->current_dev) 158 return 1; 159 if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED) 160 return 1; 161 /* We are up and running. 162 * Ratelimit the messages to avoid DoS over the net. */ 163 return net_ratelimit(); 164 } 165 166 void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...) 167 { 168 struct va_format vaf; 169 va_list args; 170 171 if (!b43legacy_ratelimit(wl)) 172 return; 173 174 va_start(args, fmt); 175 176 vaf.fmt = fmt; 177 vaf.va = &args; 178 179 printk(KERN_INFO "b43legacy-%s: %pV", 180 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); 181 182 va_end(args); 183 } 184 185 void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...) 186 { 187 struct va_format vaf; 188 va_list args; 189 190 if (!b43legacy_ratelimit(wl)) 191 return; 192 193 va_start(args, fmt); 194 195 vaf.fmt = fmt; 196 vaf.va = &args; 197 198 printk(KERN_ERR "b43legacy-%s ERROR: %pV", 199 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); 200 201 va_end(args); 202 } 203 204 void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...) 205 { 206 struct va_format vaf; 207 va_list args; 208 209 if (!b43legacy_ratelimit(wl)) 210 return; 211 212 va_start(args, fmt); 213 214 vaf.fmt = fmt; 215 vaf.va = &args; 216 217 printk(KERN_WARNING "b43legacy-%s warning: %pV", 218 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); 219 220 va_end(args); 221 } 222 223 #if B43legacy_DEBUG 224 void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...) 225 { 226 struct va_format vaf; 227 va_list args; 228 229 va_start(args, fmt); 230 231 vaf.fmt = fmt; 232 vaf.va = &args; 233 234 printk(KERN_DEBUG "b43legacy-%s debug: %pV", 235 (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); 236 237 va_end(args); 238 } 239 #endif /* DEBUG */ 240 241 static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset, 242 u32 val) 243 { 244 u32 status; 245 246 B43legacy_WARN_ON(offset % 4 != 0); 247 248 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 249 if (status & B43legacy_MACCTL_BE) 250 val = swab32(val); 251 252 b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset); 253 b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val); 254 } 255 256 static inline 257 void b43legacy_shm_control_word(struct b43legacy_wldev *dev, 258 u16 routing, u16 offset) 259 { 260 u32 control; 261 262 /* "offset" is the WORD offset. */ 263 264 control = routing; 265 control <<= 16; 266 control |= offset; 267 b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control); 268 } 269 270 u32 b43legacy_shm_read32(struct b43legacy_wldev *dev, 271 u16 routing, u16 offset) 272 { 273 u32 ret; 274 275 if (routing == B43legacy_SHM_SHARED) { 276 B43legacy_WARN_ON((offset & 0x0001) != 0); 277 if (offset & 0x0003) { 278 /* Unaligned access */ 279 b43legacy_shm_control_word(dev, routing, offset >> 2); 280 ret = b43legacy_read16(dev, 281 B43legacy_MMIO_SHM_DATA_UNALIGNED); 282 ret <<= 16; 283 b43legacy_shm_control_word(dev, routing, 284 (offset >> 2) + 1); 285 ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); 286 287 return ret; 288 } 289 offset >>= 2; 290 } 291 b43legacy_shm_control_word(dev, routing, offset); 292 ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA); 293 294 return ret; 295 } 296 297 u16 b43legacy_shm_read16(struct b43legacy_wldev *dev, 298 u16 routing, u16 offset) 299 { 300 u16 ret; 301 302 if (routing == B43legacy_SHM_SHARED) { 303 B43legacy_WARN_ON((offset & 0x0001) != 0); 304 if (offset & 0x0003) { 305 /* Unaligned access */ 306 b43legacy_shm_control_word(dev, routing, offset >> 2); 307 ret = b43legacy_read16(dev, 308 B43legacy_MMIO_SHM_DATA_UNALIGNED); 309 310 return ret; 311 } 312 offset >>= 2; 313 } 314 b43legacy_shm_control_word(dev, routing, offset); 315 ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); 316 317 return ret; 318 } 319 320 void b43legacy_shm_write32(struct b43legacy_wldev *dev, 321 u16 routing, u16 offset, 322 u32 value) 323 { 324 if (routing == B43legacy_SHM_SHARED) { 325 B43legacy_WARN_ON((offset & 0x0001) != 0); 326 if (offset & 0x0003) { 327 /* Unaligned access */ 328 b43legacy_shm_control_word(dev, routing, offset >> 2); 329 b43legacy_write16(dev, 330 B43legacy_MMIO_SHM_DATA_UNALIGNED, 331 (value >> 16) & 0xffff); 332 b43legacy_shm_control_word(dev, routing, 333 (offset >> 2) + 1); 334 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, 335 value & 0xffff); 336 return; 337 } 338 offset >>= 2; 339 } 340 b43legacy_shm_control_word(dev, routing, offset); 341 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value); 342 } 343 344 void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset, 345 u16 value) 346 { 347 if (routing == B43legacy_SHM_SHARED) { 348 B43legacy_WARN_ON((offset & 0x0001) != 0); 349 if (offset & 0x0003) { 350 /* Unaligned access */ 351 b43legacy_shm_control_word(dev, routing, offset >> 2); 352 b43legacy_write16(dev, 353 B43legacy_MMIO_SHM_DATA_UNALIGNED, 354 value); 355 return; 356 } 357 offset >>= 2; 358 } 359 b43legacy_shm_control_word(dev, routing, offset); 360 b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value); 361 } 362 363 /* Read HostFlags */ 364 u32 b43legacy_hf_read(struct b43legacy_wldev *dev) 365 { 366 u32 ret; 367 368 ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 369 B43legacy_SHM_SH_HOSTFHI); 370 ret <<= 16; 371 ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 372 B43legacy_SHM_SH_HOSTFLO); 373 374 return ret; 375 } 376 377 /* Write HostFlags */ 378 void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value) 379 { 380 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 381 B43legacy_SHM_SH_HOSTFLO, 382 (value & 0x0000FFFF)); 383 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 384 B43legacy_SHM_SH_HOSTFHI, 385 ((value & 0xFFFF0000) >> 16)); 386 } 387 388 void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf) 389 { 390 /* We need to be careful. As we read the TSF from multiple 391 * registers, we should take care of register overflows. 392 * In theory, the whole tsf read process should be atomic. 393 * We try to be atomic here, by restaring the read process, 394 * if any of the high registers changed (overflew). 395 */ 396 if (dev->dev->id.revision >= 3) { 397 u32 low; 398 u32 high; 399 u32 high2; 400 401 do { 402 high = b43legacy_read32(dev, 403 B43legacy_MMIO_REV3PLUS_TSF_HIGH); 404 low = b43legacy_read32(dev, 405 B43legacy_MMIO_REV3PLUS_TSF_LOW); 406 high2 = b43legacy_read32(dev, 407 B43legacy_MMIO_REV3PLUS_TSF_HIGH); 408 } while (unlikely(high != high2)); 409 410 *tsf = high; 411 *tsf <<= 32; 412 *tsf |= low; 413 } else { 414 u64 tmp; 415 u16 v0; 416 u16 v1; 417 u16 v2; 418 u16 v3; 419 u16 test1; 420 u16 test2; 421 u16 test3; 422 423 do { 424 v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); 425 v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); 426 v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); 427 v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0); 428 429 test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); 430 test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); 431 test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); 432 } while (v3 != test3 || v2 != test2 || v1 != test1); 433 434 *tsf = v3; 435 *tsf <<= 48; 436 tmp = v2; 437 tmp <<= 32; 438 *tsf |= tmp; 439 tmp = v1; 440 tmp <<= 16; 441 *tsf |= tmp; 442 *tsf |= v0; 443 } 444 } 445 446 static void b43legacy_time_lock(struct b43legacy_wldev *dev) 447 { 448 u32 status; 449 450 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 451 status |= B43legacy_MACCTL_TBTTHOLD; 452 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); 453 } 454 455 static void b43legacy_time_unlock(struct b43legacy_wldev *dev) 456 { 457 u32 status; 458 459 status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 460 status &= ~B43legacy_MACCTL_TBTTHOLD; 461 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); 462 } 463 464 static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf) 465 { 466 /* Be careful with the in-progress timer. 467 * First zero out the low register, so we have a full 468 * register-overflow duration to complete the operation. 469 */ 470 if (dev->dev->id.revision >= 3) { 471 u32 lo = (tsf & 0x00000000FFFFFFFFULL); 472 u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32; 473 474 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0); 475 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH, 476 hi); 477 b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 478 lo); 479 } else { 480 u16 v0 = (tsf & 0x000000000000FFFFULL); 481 u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16; 482 u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32; 483 u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48; 484 485 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0); 486 b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3); 487 b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2); 488 b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1); 489 b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0); 490 } 491 } 492 493 void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf) 494 { 495 b43legacy_time_lock(dev); 496 b43legacy_tsf_write_locked(dev, tsf); 497 b43legacy_time_unlock(dev); 498 } 499 500 static 501 void b43legacy_macfilter_set(struct b43legacy_wldev *dev, 502 u16 offset, const u8 *mac) 503 { 504 static const u8 zero_addr[ETH_ALEN] = { 0 }; 505 u16 data; 506 507 if (!mac) 508 mac = zero_addr; 509 510 offset |= 0x0020; 511 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset); 512 513 data = mac[0]; 514 data |= mac[1] << 8; 515 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); 516 data = mac[2]; 517 data |= mac[3] << 8; 518 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); 519 data = mac[4]; 520 data |= mac[5] << 8; 521 b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); 522 } 523 524 static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev) 525 { 526 static const u8 zero_addr[ETH_ALEN] = { 0 }; 527 const u8 *mac = dev->wl->mac_addr; 528 const u8 *bssid = dev->wl->bssid; 529 u8 mac_bssid[ETH_ALEN * 2]; 530 int i; 531 u32 tmp; 532 533 if (!bssid) 534 bssid = zero_addr; 535 if (!mac) 536 mac = zero_addr; 537 538 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid); 539 540 memcpy(mac_bssid, mac, ETH_ALEN); 541 memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN); 542 543 /* Write our MAC address and BSSID to template ram */ 544 for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) { 545 tmp = (u32)(mac_bssid[i + 0]); 546 tmp |= (u32)(mac_bssid[i + 1]) << 8; 547 tmp |= (u32)(mac_bssid[i + 2]) << 16; 548 tmp |= (u32)(mac_bssid[i + 3]) << 24; 549 b43legacy_ram_write(dev, 0x20 + i, tmp); 550 b43legacy_ram_write(dev, 0x78 + i, tmp); 551 b43legacy_ram_write(dev, 0x478 + i, tmp); 552 } 553 } 554 555 static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev) 556 { 557 b43legacy_write_mac_bssid_templates(dev); 558 b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF, 559 dev->wl->mac_addr); 560 } 561 562 static void b43legacy_set_slot_time(struct b43legacy_wldev *dev, 563 u16 slot_time) 564 { 565 /* slot_time is in usec. */ 566 if (dev->phy.type != B43legacy_PHYTYPE_G) 567 return; 568 b43legacy_write16(dev, 0x684, 510 + slot_time); 569 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010, 570 slot_time); 571 } 572 573 static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev) 574 { 575 b43legacy_set_slot_time(dev, 9); 576 } 577 578 static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev) 579 { 580 b43legacy_set_slot_time(dev, 20); 581 } 582 583 /* Synchronize IRQ top- and bottom-half. 584 * IRQs must be masked before calling this. 585 * This must not be called with the irq_lock held. 586 */ 587 static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev) 588 { 589 synchronize_irq(dev->dev->irq); 590 tasklet_kill(&dev->isr_tasklet); 591 } 592 593 /* DummyTransmission function, as documented on 594 * https://bcm-specs.sipsolutions.net/DummyTransmission 595 */ 596 void b43legacy_dummy_transmission(struct b43legacy_wldev *dev) 597 { 598 struct b43legacy_phy *phy = &dev->phy; 599 unsigned int i; 600 unsigned int max_loop; 601 u16 value; 602 u32 buffer[5] = { 603 0x00000000, 604 0x00D40000, 605 0x00000000, 606 0x01000000, 607 0x00000000, 608 }; 609 610 switch (phy->type) { 611 case B43legacy_PHYTYPE_B: 612 case B43legacy_PHYTYPE_G: 613 max_loop = 0xFA; 614 buffer[0] = 0x000B846E; 615 break; 616 default: 617 B43legacy_BUG_ON(1); 618 return; 619 } 620 621 for (i = 0; i < 5; i++) 622 b43legacy_ram_write(dev, i * 4, buffer[i]); 623 624 /* dummy read follows */ 625 b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 626 627 b43legacy_write16(dev, 0x0568, 0x0000); 628 b43legacy_write16(dev, 0x07C0, 0x0000); 629 b43legacy_write16(dev, 0x050C, 0x0000); 630 b43legacy_write16(dev, 0x0508, 0x0000); 631 b43legacy_write16(dev, 0x050A, 0x0000); 632 b43legacy_write16(dev, 0x054C, 0x0000); 633 b43legacy_write16(dev, 0x056A, 0x0014); 634 b43legacy_write16(dev, 0x0568, 0x0826); 635 b43legacy_write16(dev, 0x0500, 0x0000); 636 b43legacy_write16(dev, 0x0502, 0x0030); 637 638 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) 639 b43legacy_radio_write16(dev, 0x0051, 0x0017); 640 for (i = 0x00; i < max_loop; i++) { 641 value = b43legacy_read16(dev, 0x050E); 642 if (value & 0x0080) 643 break; 644 udelay(10); 645 } 646 for (i = 0x00; i < 0x0A; i++) { 647 value = b43legacy_read16(dev, 0x050E); 648 if (value & 0x0400) 649 break; 650 udelay(10); 651 } 652 for (i = 0x00; i < 0x0A; i++) { 653 value = b43legacy_read16(dev, 0x0690); 654 if (!(value & 0x0100)) 655 break; 656 udelay(10); 657 } 658 if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) 659 b43legacy_radio_write16(dev, 0x0051, 0x0037); 660 } 661 662 /* Turn the Analog ON/OFF */ 663 static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on) 664 { 665 b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4); 666 } 667 668 void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags) 669 { 670 u32 tmslow; 671 u32 macctl; 672 673 flags |= B43legacy_TMSLOW_PHYCLKEN; 674 flags |= B43legacy_TMSLOW_PHYRESET; 675 ssb_device_enable(dev->dev, flags); 676 msleep(2); /* Wait for the PLL to turn on. */ 677 678 /* Now take the PHY out of Reset again */ 679 tmslow = ssb_read32(dev->dev, SSB_TMSLOW); 680 tmslow |= SSB_TMSLOW_FGC; 681 tmslow &= ~B43legacy_TMSLOW_PHYRESET; 682 ssb_write32(dev->dev, SSB_TMSLOW, tmslow); 683 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ 684 msleep(1); 685 tmslow &= ~SSB_TMSLOW_FGC; 686 ssb_write32(dev->dev, SSB_TMSLOW, tmslow); 687 ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ 688 msleep(1); 689 690 /* Turn Analog ON */ 691 b43legacy_switch_analog(dev, 1); 692 693 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 694 macctl &= ~B43legacy_MACCTL_GMODE; 695 if (flags & B43legacy_TMSLOW_GMODE) { 696 macctl |= B43legacy_MACCTL_GMODE; 697 dev->phy.gmode = true; 698 } else 699 dev->phy.gmode = false; 700 macctl |= B43legacy_MACCTL_IHR_ENABLED; 701 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); 702 } 703 704 static void handle_irq_transmit_status(struct b43legacy_wldev *dev) 705 { 706 u32 v0; 707 u32 v1; 708 u16 tmp; 709 struct b43legacy_txstatus stat; 710 711 while (1) { 712 v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); 713 if (!(v0 & 0x00000001)) 714 break; 715 v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); 716 717 stat.cookie = (v0 >> 16); 718 stat.seq = (v1 & 0x0000FFFF); 719 stat.phy_stat = ((v1 & 0x00FF0000) >> 16); 720 tmp = (v0 & 0x0000FFFF); 721 stat.frame_count = ((tmp & 0xF000) >> 12); 722 stat.rts_count = ((tmp & 0x0F00) >> 8); 723 stat.supp_reason = ((tmp & 0x001C) >> 2); 724 stat.pm_indicated = !!(tmp & 0x0080); 725 stat.intermediate = !!(tmp & 0x0040); 726 stat.for_ampdu = !!(tmp & 0x0020); 727 stat.acked = !!(tmp & 0x0002); 728 729 b43legacy_handle_txstatus(dev, &stat); 730 } 731 } 732 733 static void drain_txstatus_queue(struct b43legacy_wldev *dev) 734 { 735 u32 dummy; 736 737 if (dev->dev->id.revision < 5) 738 return; 739 /* Read all entries from the microcode TXstatus FIFO 740 * and throw them away. 741 */ 742 while (1) { 743 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); 744 if (!(dummy & 0x00000001)) 745 break; 746 dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); 747 } 748 } 749 750 static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev) 751 { 752 u32 val = 0; 753 754 val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A); 755 val <<= 16; 756 val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408); 757 758 return val; 759 } 760 761 static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi) 762 { 763 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408, 764 (jssi & 0x0000FFFF)); 765 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A, 766 (jssi & 0xFFFF0000) >> 16); 767 } 768 769 static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev) 770 { 771 b43legacy_jssi_write(dev, 0x7F7F7F7F); 772 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, 773 b43legacy_read32(dev, B43legacy_MMIO_MACCMD) 774 | B43legacy_MACCMD_BGNOISE); 775 B43legacy_WARN_ON(dev->noisecalc.channel_at_start != 776 dev->phy.channel); 777 } 778 779 static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev) 780 { 781 /* Top half of Link Quality calculation. */ 782 783 if (dev->noisecalc.calculation_running) 784 return; 785 dev->noisecalc.channel_at_start = dev->phy.channel; 786 dev->noisecalc.calculation_running = true; 787 dev->noisecalc.nr_samples = 0; 788 789 b43legacy_generate_noise_sample(dev); 790 } 791 792 static void handle_irq_noise(struct b43legacy_wldev *dev) 793 { 794 struct b43legacy_phy *phy = &dev->phy; 795 u16 tmp; 796 u8 noise[4]; 797 u8 i; 798 u8 j; 799 s32 average; 800 801 /* Bottom half of Link Quality calculation. */ 802 803 B43legacy_WARN_ON(!dev->noisecalc.calculation_running); 804 if (dev->noisecalc.channel_at_start != phy->channel) 805 goto drop_calculation; 806 *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev)); 807 if (noise[0] == 0x7F || noise[1] == 0x7F || 808 noise[2] == 0x7F || noise[3] == 0x7F) 809 goto generate_new; 810 811 /* Get the noise samples. */ 812 B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8); 813 i = dev->noisecalc.nr_samples; 814 noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 815 noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 816 noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 817 noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); 818 dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; 819 dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; 820 dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; 821 dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; 822 dev->noisecalc.nr_samples++; 823 if (dev->noisecalc.nr_samples == 8) { 824 /* Calculate the Link Quality by the noise samples. */ 825 average = 0; 826 for (i = 0; i < 8; i++) { 827 for (j = 0; j < 4; j++) 828 average += dev->noisecalc.samples[i][j]; 829 } 830 average /= (8 * 4); 831 average *= 125; 832 average += 64; 833 average /= 128; 834 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 835 0x40C); 836 tmp = (tmp / 128) & 0x1F; 837 if (tmp >= 8) 838 average += 2; 839 else 840 average -= 25; 841 if (tmp == 8) 842 average -= 72; 843 else 844 average -= 48; 845 846 dev->stats.link_noise = average; 847 drop_calculation: 848 dev->noisecalc.calculation_running = false; 849 return; 850 } 851 generate_new: 852 b43legacy_generate_noise_sample(dev); 853 } 854 855 static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev) 856 { 857 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) { 858 /* TODO: PS TBTT */ 859 } else { 860 if (1/*FIXME: the last PSpoll frame was sent successfully */) 861 b43legacy_power_saving_ctl_bits(dev, -1, -1); 862 } 863 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) 864 dev->dfq_valid = true; 865 } 866 867 static void handle_irq_atim_end(struct b43legacy_wldev *dev) 868 { 869 if (dev->dfq_valid) { 870 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, 871 b43legacy_read32(dev, B43legacy_MMIO_MACCMD) 872 | B43legacy_MACCMD_DFQ_VALID); 873 dev->dfq_valid = false; 874 } 875 } 876 877 static void handle_irq_pmq(struct b43legacy_wldev *dev) 878 { 879 u32 tmp; 880 881 /* TODO: AP mode. */ 882 883 while (1) { 884 tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS); 885 if (!(tmp & 0x00000008)) 886 break; 887 } 888 /* 16bit write is odd, but correct. */ 889 b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002); 890 } 891 892 static void b43legacy_write_template_common(struct b43legacy_wldev *dev, 893 const u8 *data, u16 size, 894 u16 ram_offset, 895 u16 shm_size_offset, u8 rate) 896 { 897 u32 i; 898 u32 tmp; 899 struct b43legacy_plcp_hdr4 plcp; 900 901 plcp.data = 0; 902 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); 903 b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data)); 904 ram_offset += sizeof(u32); 905 /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet. 906 * So leave the first two bytes of the next write blank. 907 */ 908 tmp = (u32)(data[0]) << 16; 909 tmp |= (u32)(data[1]) << 24; 910 b43legacy_ram_write(dev, ram_offset, tmp); 911 ram_offset += sizeof(u32); 912 for (i = 2; i < size; i += sizeof(u32)) { 913 tmp = (u32)(data[i + 0]); 914 if (i + 1 < size) 915 tmp |= (u32)(data[i + 1]) << 8; 916 if (i + 2 < size) 917 tmp |= (u32)(data[i + 2]) << 16; 918 if (i + 3 < size) 919 tmp |= (u32)(data[i + 3]) << 24; 920 b43legacy_ram_write(dev, ram_offset + i - 2, tmp); 921 } 922 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset, 923 size + sizeof(struct b43legacy_plcp_hdr6)); 924 } 925 926 /* Convert a b43legacy antenna number value to the PHY TX control value. */ 927 static u16 b43legacy_antenna_to_phyctl(int antenna) 928 { 929 switch (antenna) { 930 case B43legacy_ANTENNA0: 931 return B43legacy_TX4_PHY_ANT0; 932 case B43legacy_ANTENNA1: 933 return B43legacy_TX4_PHY_ANT1; 934 } 935 return B43legacy_TX4_PHY_ANTLAST; 936 } 937 938 static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev, 939 u16 ram_offset, 940 u16 shm_size_offset) 941 { 942 943 unsigned int i, len, variable_len; 944 const struct ieee80211_mgmt *bcn; 945 const u8 *ie; 946 bool tim_found = false; 947 unsigned int rate; 948 u16 ctl; 949 int antenna; 950 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon); 951 952 bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data); 953 len = min_t(size_t, dev->wl->current_beacon->len, 954 0x200 - sizeof(struct b43legacy_plcp_hdr6)); 955 rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value; 956 957 b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset, 958 shm_size_offset, rate); 959 960 /* Write the PHY TX control parameters. */ 961 antenna = B43legacy_ANTENNA_DEFAULT; 962 antenna = b43legacy_antenna_to_phyctl(antenna); 963 ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 964 B43legacy_SHM_SH_BEACPHYCTL); 965 /* We can't send beacons with short preamble. Would get PHY errors. */ 966 ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL; 967 ctl &= ~B43legacy_TX4_PHY_ANT; 968 ctl &= ~B43legacy_TX4_PHY_ENC; 969 ctl |= antenna; 970 ctl |= B43legacy_TX4_PHY_ENC_CCK; 971 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 972 B43legacy_SHM_SH_BEACPHYCTL, ctl); 973 974 /* Find the position of the TIM and the DTIM_period value 975 * and write them to SHM. */ 976 ie = bcn->u.beacon.variable; 977 variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 978 for (i = 0; i < variable_len - 2; ) { 979 uint8_t ie_id, ie_len; 980 981 ie_id = ie[i]; 982 ie_len = ie[i + 1]; 983 if (ie_id == 5) { 984 u16 tim_position; 985 u16 dtim_period; 986 /* This is the TIM Information Element */ 987 988 /* Check whether the ie_len is in the beacon data range. */ 989 if (variable_len < ie_len + 2 + i) 990 break; 991 /* A valid TIM is at least 4 bytes long. */ 992 if (ie_len < 4) 993 break; 994 tim_found = true; 995 996 tim_position = sizeof(struct b43legacy_plcp_hdr6); 997 tim_position += offsetof(struct ieee80211_mgmt, 998 u.beacon.variable); 999 tim_position += i; 1000 1001 dtim_period = ie[i + 3]; 1002 1003 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 1004 B43legacy_SHM_SH_TIMPOS, tim_position); 1005 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 1006 B43legacy_SHM_SH_DTIMP, dtim_period); 1007 break; 1008 } 1009 i += ie_len + 2; 1010 } 1011 if (!tim_found) { 1012 b43legacywarn(dev->wl, "Did not find a valid TIM IE in the " 1013 "beacon template packet. AP or IBSS operation " 1014 "may be broken.\n"); 1015 } else 1016 b43legacydbg(dev->wl, "Updated beacon template\n"); 1017 } 1018 1019 static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev, 1020 u16 shm_offset, u16 size, 1021 struct ieee80211_rate *rate) 1022 { 1023 struct b43legacy_plcp_hdr4 plcp; 1024 u32 tmp; 1025 __le16 dur; 1026 1027 plcp.data = 0; 1028 b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value); 1029 dur = ieee80211_generic_frame_duration(dev->wl->hw, 1030 dev->wl->vif, 1031 NL80211_BAND_2GHZ, 1032 size, 1033 rate); 1034 /* Write PLCP in two parts and timing for packet transfer */ 1035 tmp = le32_to_cpu(plcp.data); 1036 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset, 1037 tmp & 0xFFFF); 1038 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2, 1039 tmp >> 16); 1040 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6, 1041 le16_to_cpu(dur)); 1042 } 1043 1044 /* Instead of using custom probe response template, this function 1045 * just patches custom beacon template by: 1046 * 1) Changing packet type 1047 * 2) Patching duration field 1048 * 3) Stripping TIM 1049 */ 1050 static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev, 1051 u16 *dest_size, 1052 struct ieee80211_rate *rate) 1053 { 1054 const u8 *src_data; 1055 u8 *dest_data; 1056 u16 src_size, elem_size, src_pos, dest_pos; 1057 __le16 dur; 1058 struct ieee80211_hdr *hdr; 1059 size_t ie_start; 1060 1061 src_size = dev->wl->current_beacon->len; 1062 src_data = (const u8 *)dev->wl->current_beacon->data; 1063 1064 /* Get the start offset of the variable IEs in the packet. */ 1065 ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); 1066 B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, 1067 u.beacon.variable)); 1068 1069 if (B43legacy_WARN_ON(src_size < ie_start)) 1070 return NULL; 1071 1072 dest_data = kmalloc(src_size, GFP_ATOMIC); 1073 if (unlikely(!dest_data)) 1074 return NULL; 1075 1076 /* Copy the static data and all Information Elements, except the TIM. */ 1077 memcpy(dest_data, src_data, ie_start); 1078 src_pos = ie_start; 1079 dest_pos = ie_start; 1080 for ( ; src_pos < src_size - 2; src_pos += elem_size) { 1081 elem_size = src_data[src_pos + 1] + 2; 1082 if (src_data[src_pos] == 5) { 1083 /* This is the TIM. */ 1084 continue; 1085 } 1086 memcpy(dest_data + dest_pos, src_data + src_pos, elem_size); 1087 dest_pos += elem_size; 1088 } 1089 *dest_size = dest_pos; 1090 hdr = (struct ieee80211_hdr *)dest_data; 1091 1092 /* Set the frame control. */ 1093 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1094 IEEE80211_STYPE_PROBE_RESP); 1095 dur = ieee80211_generic_frame_duration(dev->wl->hw, 1096 dev->wl->vif, 1097 NL80211_BAND_2GHZ, 1098 *dest_size, 1099 rate); 1100 hdr->duration_id = dur; 1101 1102 return dest_data; 1103 } 1104 1105 static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev, 1106 u16 ram_offset, 1107 u16 shm_size_offset, 1108 struct ieee80211_rate *rate) 1109 { 1110 const u8 *probe_resp_data; 1111 u16 size; 1112 1113 size = dev->wl->current_beacon->len; 1114 probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate); 1115 if (unlikely(!probe_resp_data)) 1116 return; 1117 1118 /* Looks like PLCP headers plus packet timings are stored for 1119 * all possible basic rates 1120 */ 1121 b43legacy_write_probe_resp_plcp(dev, 0x31A, size, 1122 &b43legacy_b_ratetable[0]); 1123 b43legacy_write_probe_resp_plcp(dev, 0x32C, size, 1124 &b43legacy_b_ratetable[1]); 1125 b43legacy_write_probe_resp_plcp(dev, 0x33E, size, 1126 &b43legacy_b_ratetable[2]); 1127 b43legacy_write_probe_resp_plcp(dev, 0x350, size, 1128 &b43legacy_b_ratetable[3]); 1129 1130 size = min_t(size_t, size, 1131 0x200 - sizeof(struct b43legacy_plcp_hdr6)); 1132 b43legacy_write_template_common(dev, probe_resp_data, 1133 size, ram_offset, 1134 shm_size_offset, rate->hw_value); 1135 kfree(probe_resp_data); 1136 } 1137 1138 static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev) 1139 { 1140 struct b43legacy_wl *wl = dev->wl; 1141 1142 if (wl->beacon0_uploaded) 1143 return; 1144 b43legacy_write_beacon_template(dev, 0x68, 0x18); 1145 /* FIXME: Probe resp upload doesn't really belong here, 1146 * but we don't use that feature anyway. */ 1147 b43legacy_write_probe_resp_template(dev, 0x268, 0x4A, 1148 &__b43legacy_ratetable[3]); 1149 wl->beacon0_uploaded = true; 1150 } 1151 1152 static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev) 1153 { 1154 struct b43legacy_wl *wl = dev->wl; 1155 1156 if (wl->beacon1_uploaded) 1157 return; 1158 b43legacy_write_beacon_template(dev, 0x468, 0x1A); 1159 wl->beacon1_uploaded = true; 1160 } 1161 1162 static void handle_irq_beacon(struct b43legacy_wldev *dev) 1163 { 1164 struct b43legacy_wl *wl = dev->wl; 1165 u32 cmd, beacon0_valid, beacon1_valid; 1166 1167 if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) 1168 return; 1169 1170 /* This is the bottom half of the asynchronous beacon update. */ 1171 1172 /* Ignore interrupt in the future. */ 1173 dev->irq_mask &= ~B43legacy_IRQ_BEACON; 1174 1175 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); 1176 beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID); 1177 beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID); 1178 1179 /* Schedule interrupt manually, if busy. */ 1180 if (beacon0_valid && beacon1_valid) { 1181 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON); 1182 dev->irq_mask |= B43legacy_IRQ_BEACON; 1183 return; 1184 } 1185 1186 if (unlikely(wl->beacon_templates_virgin)) { 1187 /* We never uploaded a beacon before. 1188 * Upload both templates now, but only mark one valid. */ 1189 wl->beacon_templates_virgin = false; 1190 b43legacy_upload_beacon0(dev); 1191 b43legacy_upload_beacon1(dev); 1192 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); 1193 cmd |= B43legacy_MACCMD_BEACON0_VALID; 1194 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); 1195 } else { 1196 if (!beacon0_valid) { 1197 b43legacy_upload_beacon0(dev); 1198 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); 1199 cmd |= B43legacy_MACCMD_BEACON0_VALID; 1200 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); 1201 } else if (!beacon1_valid) { 1202 b43legacy_upload_beacon1(dev); 1203 cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); 1204 cmd |= B43legacy_MACCMD_BEACON1_VALID; 1205 b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); 1206 } 1207 } 1208 } 1209 1210 static void b43legacy_beacon_update_trigger_work(struct work_struct *work) 1211 { 1212 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, 1213 beacon_update_trigger); 1214 struct b43legacy_wldev *dev; 1215 1216 mutex_lock(&wl->mutex); 1217 dev = wl->current_dev; 1218 if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) { 1219 spin_lock_irq(&wl->irq_lock); 1220 /* Update beacon right away or defer to IRQ. */ 1221 handle_irq_beacon(dev); 1222 /* The handler might have updated the IRQ mask. */ 1223 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 1224 dev->irq_mask); 1225 spin_unlock_irq(&wl->irq_lock); 1226 } 1227 mutex_unlock(&wl->mutex); 1228 } 1229 1230 /* Asynchronously update the packet templates in template RAM. 1231 * Locking: Requires wl->irq_lock to be locked. */ 1232 static void b43legacy_update_templates(struct b43legacy_wl *wl) 1233 { 1234 struct sk_buff *beacon; 1235 /* This is the top half of the ansynchronous beacon update. The bottom 1236 * half is the beacon IRQ. Beacon update must be asynchronous to avoid 1237 * sending an invalid beacon. This can happen for example, if the 1238 * firmware transmits a beacon while we are updating it. */ 1239 1240 /* We could modify the existing beacon and set the aid bit in the TIM 1241 * field, but that would probably require resizing and moving of data 1242 * within the beacon template. Simply request a new beacon and let 1243 * mac80211 do the hard work. */ 1244 beacon = ieee80211_beacon_get(wl->hw, wl->vif); 1245 if (unlikely(!beacon)) 1246 return; 1247 1248 if (wl->current_beacon) 1249 dev_kfree_skb_any(wl->current_beacon); 1250 wl->current_beacon = beacon; 1251 wl->beacon0_uploaded = false; 1252 wl->beacon1_uploaded = false; 1253 ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger); 1254 } 1255 1256 static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev, 1257 u16 beacon_int) 1258 { 1259 b43legacy_time_lock(dev); 1260 if (dev->dev->id.revision >= 3) { 1261 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP, 1262 (beacon_int << 16)); 1263 b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START, 1264 (beacon_int << 10)); 1265 } else { 1266 b43legacy_write16(dev, 0x606, (beacon_int >> 6)); 1267 b43legacy_write16(dev, 0x610, beacon_int); 1268 } 1269 b43legacy_time_unlock(dev); 1270 b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int); 1271 } 1272 1273 static void handle_irq_ucode_debug(struct b43legacy_wldev *dev) 1274 { 1275 } 1276 1277 /* Interrupt handler bottom-half */ 1278 static void b43legacy_interrupt_tasklet(struct tasklet_struct *t) 1279 { 1280 struct b43legacy_wldev *dev = from_tasklet(dev, t, isr_tasklet); 1281 u32 reason; 1282 u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; 1283 u32 merged_dma_reason = 0; 1284 int i; 1285 unsigned long flags; 1286 1287 spin_lock_irqsave(&dev->wl->irq_lock, flags); 1288 1289 B43legacy_WARN_ON(b43legacy_status(dev) < 1290 B43legacy_STAT_INITIALIZED); 1291 1292 reason = dev->irq_reason; 1293 for (i = 0; i < ARRAY_SIZE(dma_reason); i++) { 1294 dma_reason[i] = dev->dma_reason[i]; 1295 merged_dma_reason |= dma_reason[i]; 1296 } 1297 1298 if (unlikely(reason & B43legacy_IRQ_MAC_TXERR)) 1299 b43legacyerr(dev->wl, "MAC transmission error\n"); 1300 1301 if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) { 1302 b43legacyerr(dev->wl, "PHY transmission error\n"); 1303 rmb(); 1304 if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { 1305 b43legacyerr(dev->wl, "Too many PHY TX errors, " 1306 "restarting the controller\n"); 1307 b43legacy_controller_restart(dev, "PHY TX errors"); 1308 } 1309 } 1310 1311 if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK | 1312 B43legacy_DMAIRQ_NONFATALMASK))) { 1313 if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) { 1314 b43legacyerr(dev->wl, "Fatal DMA error: " 1315 "0x%08X, 0x%08X, 0x%08X, " 1316 "0x%08X, 0x%08X, 0x%08X\n", 1317 dma_reason[0], dma_reason[1], 1318 dma_reason[2], dma_reason[3], 1319 dma_reason[4], dma_reason[5]); 1320 b43legacy_controller_restart(dev, "DMA error"); 1321 spin_unlock_irqrestore(&dev->wl->irq_lock, flags); 1322 return; 1323 } 1324 if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK) 1325 b43legacyerr(dev->wl, "DMA error: " 1326 "0x%08X, 0x%08X, 0x%08X, " 1327 "0x%08X, 0x%08X, 0x%08X\n", 1328 dma_reason[0], dma_reason[1], 1329 dma_reason[2], dma_reason[3], 1330 dma_reason[4], dma_reason[5]); 1331 } 1332 1333 if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG)) 1334 handle_irq_ucode_debug(dev); 1335 if (reason & B43legacy_IRQ_TBTT_INDI) 1336 handle_irq_tbtt_indication(dev); 1337 if (reason & B43legacy_IRQ_ATIM_END) 1338 handle_irq_atim_end(dev); 1339 if (reason & B43legacy_IRQ_BEACON) 1340 handle_irq_beacon(dev); 1341 if (reason & B43legacy_IRQ_PMQ) 1342 handle_irq_pmq(dev); 1343 if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) { 1344 ;/*TODO*/ 1345 } 1346 if (reason & B43legacy_IRQ_NOISESAMPLE_OK) 1347 handle_irq_noise(dev); 1348 1349 /* Check the DMA reason registers for received data. */ 1350 if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) { 1351 if (b43legacy_using_pio(dev)) 1352 b43legacy_pio_rx(dev->pio.queue0); 1353 else 1354 b43legacy_dma_rx(dev->dma.rx_ring0); 1355 } 1356 B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE); 1357 B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE); 1358 if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) { 1359 if (b43legacy_using_pio(dev)) 1360 b43legacy_pio_rx(dev->pio.queue3); 1361 else 1362 b43legacy_dma_rx(dev->dma.rx_ring3); 1363 } 1364 B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE); 1365 B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE); 1366 1367 if (reason & B43legacy_IRQ_TX_OK) 1368 handle_irq_transmit_status(dev); 1369 1370 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); 1371 spin_unlock_irqrestore(&dev->wl->irq_lock, flags); 1372 } 1373 1374 static void pio_irq_workaround(struct b43legacy_wldev *dev, 1375 u16 base, int queueidx) 1376 { 1377 u16 rxctl; 1378 1379 rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL); 1380 if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE) 1381 dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE; 1382 else 1383 dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE; 1384 } 1385 1386 static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason) 1387 { 1388 if (b43legacy_using_pio(dev) && 1389 (dev->dev->id.revision < 3) && 1390 (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) { 1391 /* Apply a PIO specific workaround to the dma_reasons */ 1392 pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0); 1393 pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1); 1394 pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2); 1395 pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3); 1396 } 1397 1398 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason); 1399 1400 b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON, 1401 dev->dma_reason[0]); 1402 b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON, 1403 dev->dma_reason[1]); 1404 b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON, 1405 dev->dma_reason[2]); 1406 b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON, 1407 dev->dma_reason[3]); 1408 b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON, 1409 dev->dma_reason[4]); 1410 b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON, 1411 dev->dma_reason[5]); 1412 } 1413 1414 /* Interrupt handler top-half */ 1415 static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id) 1416 { 1417 irqreturn_t ret = IRQ_NONE; 1418 struct b43legacy_wldev *dev = dev_id; 1419 u32 reason; 1420 1421 B43legacy_WARN_ON(!dev); 1422 1423 spin_lock(&dev->wl->irq_lock); 1424 1425 if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED)) 1426 /* This can only happen on shared IRQ lines. */ 1427 goto out; 1428 reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); 1429 if (reason == 0xffffffff) /* shared IRQ */ 1430 goto out; 1431 ret = IRQ_HANDLED; 1432 reason &= dev->irq_mask; 1433 if (!reason) 1434 goto out; 1435 1436 dev->dma_reason[0] = b43legacy_read32(dev, 1437 B43legacy_MMIO_DMA0_REASON) 1438 & 0x0001DC00; 1439 dev->dma_reason[1] = b43legacy_read32(dev, 1440 B43legacy_MMIO_DMA1_REASON) 1441 & 0x0000DC00; 1442 dev->dma_reason[2] = b43legacy_read32(dev, 1443 B43legacy_MMIO_DMA2_REASON) 1444 & 0x0000DC00; 1445 dev->dma_reason[3] = b43legacy_read32(dev, 1446 B43legacy_MMIO_DMA3_REASON) 1447 & 0x0001DC00; 1448 dev->dma_reason[4] = b43legacy_read32(dev, 1449 B43legacy_MMIO_DMA4_REASON) 1450 & 0x0000DC00; 1451 dev->dma_reason[5] = b43legacy_read32(dev, 1452 B43legacy_MMIO_DMA5_REASON) 1453 & 0x0000DC00; 1454 1455 b43legacy_interrupt_ack(dev, reason); 1456 /* Disable all IRQs. They are enabled again in the bottom half. */ 1457 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); 1458 /* Save the reason code and call our bottom half. */ 1459 dev->irq_reason = reason; 1460 tasklet_schedule(&dev->isr_tasklet); 1461 out: 1462 spin_unlock(&dev->wl->irq_lock); 1463 1464 return ret; 1465 } 1466 1467 static void b43legacy_release_firmware(struct b43legacy_wldev *dev) 1468 { 1469 release_firmware(dev->fw.ucode); 1470 dev->fw.ucode = NULL; 1471 release_firmware(dev->fw.pcm); 1472 dev->fw.pcm = NULL; 1473 release_firmware(dev->fw.initvals); 1474 dev->fw.initvals = NULL; 1475 release_firmware(dev->fw.initvals_band); 1476 dev->fw.initvals_band = NULL; 1477 } 1478 1479 static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl) 1480 { 1481 b43legacyerr(wl, "You must go to https://wireless.wiki.kernel.org/en/" 1482 "users/Drivers/b43#devicefirmware " 1483 "and download the correct firmware (version 3).\n"); 1484 } 1485 1486 static void b43legacy_fw_cb(const struct firmware *firmware, void *context) 1487 { 1488 struct b43legacy_wldev *dev = context; 1489 1490 dev->fwp = firmware; 1491 complete(&dev->fw_load_complete); 1492 } 1493 1494 static int do_request_fw(struct b43legacy_wldev *dev, 1495 const char *name, 1496 const struct firmware **fw, bool async) 1497 { 1498 char path[sizeof(modparam_fwpostfix) + 32]; 1499 struct b43legacy_fw_header *hdr; 1500 u32 size; 1501 int err; 1502 1503 if (!name) 1504 return 0; 1505 1506 snprintf(path, ARRAY_SIZE(path), 1507 "b43legacy%s/%s.fw", 1508 modparam_fwpostfix, name); 1509 b43legacyinfo(dev->wl, "Loading firmware %s\n", path); 1510 if (async) { 1511 init_completion(&dev->fw_load_complete); 1512 err = request_firmware_nowait(THIS_MODULE, 1, path, 1513 dev->dev->dev, GFP_KERNEL, 1514 dev, b43legacy_fw_cb); 1515 if (err) { 1516 b43legacyerr(dev->wl, "Unable to load firmware\n"); 1517 return err; 1518 } 1519 /* stall here until fw ready */ 1520 wait_for_completion(&dev->fw_load_complete); 1521 if (!dev->fwp) 1522 err = -EINVAL; 1523 *fw = dev->fwp; 1524 } else { 1525 err = request_firmware(fw, path, dev->dev->dev); 1526 } 1527 if (err) { 1528 b43legacyerr(dev->wl, "Firmware file \"%s\" not found " 1529 "or load failed.\n", path); 1530 return err; 1531 } 1532 if ((*fw)->size < sizeof(struct b43legacy_fw_header)) 1533 goto err_format; 1534 hdr = (struct b43legacy_fw_header *)((*fw)->data); 1535 switch (hdr->type) { 1536 case B43legacy_FW_TYPE_UCODE: 1537 case B43legacy_FW_TYPE_PCM: 1538 size = be32_to_cpu(hdr->size); 1539 if (size != (*fw)->size - sizeof(struct b43legacy_fw_header)) 1540 goto err_format; 1541 fallthrough; 1542 case B43legacy_FW_TYPE_IV: 1543 if (hdr->ver != 1) 1544 goto err_format; 1545 break; 1546 default: 1547 goto err_format; 1548 } 1549 1550 return err; 1551 1552 err_format: 1553 b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path); 1554 return -EPROTO; 1555 } 1556 1557 static int b43legacy_one_core_attach(struct ssb_device *dev, 1558 struct b43legacy_wl *wl); 1559 static void b43legacy_one_core_detach(struct ssb_device *dev); 1560 1561 static void b43legacy_request_firmware(struct work_struct *work) 1562 { 1563 struct b43legacy_wl *wl = container_of(work, 1564 struct b43legacy_wl, firmware_load); 1565 struct b43legacy_wldev *dev = wl->current_dev; 1566 struct b43legacy_firmware *fw = &dev->fw; 1567 const u8 rev = dev->dev->id.revision; 1568 const char *filename; 1569 int err; 1570 1571 if (!fw->ucode) { 1572 if (rev == 2) 1573 filename = "ucode2"; 1574 else if (rev == 4) 1575 filename = "ucode4"; 1576 else 1577 filename = "ucode5"; 1578 err = do_request_fw(dev, filename, &fw->ucode, true); 1579 if (err) 1580 goto err_load; 1581 } 1582 if (!fw->pcm) { 1583 if (rev < 5) 1584 filename = "pcm4"; 1585 else 1586 filename = "pcm5"; 1587 err = do_request_fw(dev, filename, &fw->pcm, false); 1588 if (err) 1589 goto err_load; 1590 } 1591 if (!fw->initvals) { 1592 switch (dev->phy.type) { 1593 case B43legacy_PHYTYPE_B: 1594 case B43legacy_PHYTYPE_G: 1595 if ((rev >= 5) && (rev <= 10)) 1596 filename = "b0g0initvals5"; 1597 else if (rev == 2 || rev == 4) 1598 filename = "b0g0initvals2"; 1599 else 1600 goto err_no_initvals; 1601 break; 1602 default: 1603 goto err_no_initvals; 1604 } 1605 err = do_request_fw(dev, filename, &fw->initvals, false); 1606 if (err) 1607 goto err_load; 1608 } 1609 if (!fw->initvals_band) { 1610 switch (dev->phy.type) { 1611 case B43legacy_PHYTYPE_B: 1612 case B43legacy_PHYTYPE_G: 1613 if ((rev >= 5) && (rev <= 10)) 1614 filename = "b0g0bsinitvals5"; 1615 else if (rev >= 11) 1616 filename = NULL; 1617 else if (rev == 2 || rev == 4) 1618 filename = NULL; 1619 else 1620 goto err_no_initvals; 1621 break; 1622 default: 1623 goto err_no_initvals; 1624 } 1625 err = do_request_fw(dev, filename, &fw->initvals_band, false); 1626 if (err) 1627 goto err_load; 1628 } 1629 err = ieee80211_register_hw(wl->hw); 1630 if (err) 1631 goto err_one_core_detach; 1632 return; 1633 1634 err_one_core_detach: 1635 b43legacy_one_core_detach(dev->dev); 1636 goto error; 1637 1638 err_load: 1639 b43legacy_print_fw_helptext(dev->wl); 1640 goto error; 1641 1642 err_no_initvals: 1643 err = -ENODEV; 1644 b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, " 1645 "core rev %u\n", dev->phy.type, rev); 1646 goto error; 1647 1648 error: 1649 b43legacy_release_firmware(dev); 1650 return; 1651 } 1652 1653 static int b43legacy_upload_microcode(struct b43legacy_wldev *dev) 1654 { 1655 struct wiphy *wiphy = dev->wl->hw->wiphy; 1656 const size_t hdr_len = sizeof(struct b43legacy_fw_header); 1657 const __be32 *data; 1658 unsigned int i; 1659 unsigned int len; 1660 u16 fwrev; 1661 u16 fwpatch; 1662 u16 fwdate; 1663 u16 fwtime; 1664 u32 tmp, macctl; 1665 int err = 0; 1666 1667 /* Jump the microcode PSM to offset 0 */ 1668 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 1669 B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN); 1670 macctl |= B43legacy_MACCTL_PSM_JMP0; 1671 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); 1672 /* Zero out all microcode PSM registers and shared memory. */ 1673 for (i = 0; i < 64; i++) 1674 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0); 1675 for (i = 0; i < 4096; i += 2) 1676 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0); 1677 1678 /* Upload Microcode. */ 1679 data = (__be32 *) (dev->fw.ucode->data + hdr_len); 1680 len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32); 1681 b43legacy_shm_control_word(dev, 1682 B43legacy_SHM_UCODE | 1683 B43legacy_SHM_AUTOINC_W, 1684 0x0000); 1685 for (i = 0; i < len; i++) { 1686 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 1687 be32_to_cpu(data[i])); 1688 udelay(10); 1689 } 1690 1691 if (dev->fw.pcm) { 1692 /* Upload PCM data. */ 1693 data = (__be32 *) (dev->fw.pcm->data + hdr_len); 1694 len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32); 1695 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA); 1696 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000); 1697 /* No need for autoinc bit in SHM_HW */ 1698 b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB); 1699 for (i = 0; i < len; i++) { 1700 b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 1701 be32_to_cpu(data[i])); 1702 udelay(10); 1703 } 1704 } 1705 1706 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 1707 B43legacy_IRQ_ALL); 1708 1709 /* Start the microcode PSM */ 1710 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 1711 macctl &= ~B43legacy_MACCTL_PSM_JMP0; 1712 macctl |= B43legacy_MACCTL_PSM_RUN; 1713 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); 1714 1715 /* Wait for the microcode to load and respond */ 1716 i = 0; 1717 while (1) { 1718 tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); 1719 if (tmp == B43legacy_IRQ_MAC_SUSPENDED) 1720 break; 1721 i++; 1722 if (i >= B43legacy_IRQWAIT_MAX_RETRIES) { 1723 b43legacyerr(dev->wl, "Microcode not responding\n"); 1724 b43legacy_print_fw_helptext(dev->wl); 1725 err = -ENODEV; 1726 goto error; 1727 } 1728 msleep_interruptible(50); 1729 if (signal_pending(current)) { 1730 err = -EINTR; 1731 goto error; 1732 } 1733 } 1734 /* dummy read follows */ 1735 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); 1736 1737 /* Get and check the revisions. */ 1738 fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 1739 B43legacy_SHM_SH_UCODEREV); 1740 fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 1741 B43legacy_SHM_SH_UCODEPATCH); 1742 fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 1743 B43legacy_SHM_SH_UCODEDATE); 1744 fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 1745 B43legacy_SHM_SH_UCODETIME); 1746 1747 if (fwrev > 0x128) { 1748 b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE." 1749 " Only firmware from binary drivers version 3.x" 1750 " is supported. You must change your firmware" 1751 " files.\n"); 1752 b43legacy_print_fw_helptext(dev->wl); 1753 err = -EOPNOTSUPP; 1754 goto error; 1755 } 1756 b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u " 1757 "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch, 1758 (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF, 1759 (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, 1760 fwtime & 0x1F); 1761 1762 dev->fw.rev = fwrev; 1763 dev->fw.patch = fwpatch; 1764 1765 snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u", 1766 dev->fw.rev, dev->fw.patch); 1767 wiphy->hw_version = dev->dev->id.coreid; 1768 1769 return 0; 1770 1771 error: 1772 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 1773 macctl &= ~B43legacy_MACCTL_PSM_RUN; 1774 macctl |= B43legacy_MACCTL_PSM_JMP0; 1775 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); 1776 1777 return err; 1778 } 1779 1780 static int b43legacy_write_initvals(struct b43legacy_wldev *dev, 1781 const struct b43legacy_iv *ivals, 1782 size_t count, 1783 size_t array_size) 1784 { 1785 const struct b43legacy_iv *iv; 1786 u16 offset; 1787 size_t i; 1788 bool bit32; 1789 1790 BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6); 1791 iv = ivals; 1792 for (i = 0; i < count; i++) { 1793 if (array_size < sizeof(iv->offset_size)) 1794 goto err_format; 1795 array_size -= sizeof(iv->offset_size); 1796 offset = be16_to_cpu(iv->offset_size); 1797 bit32 = !!(offset & B43legacy_IV_32BIT); 1798 offset &= B43legacy_IV_OFFSET_MASK; 1799 if (offset >= 0x1000) 1800 goto err_format; 1801 if (bit32) { 1802 u32 value; 1803 1804 if (array_size < sizeof(iv->data.d32)) 1805 goto err_format; 1806 array_size -= sizeof(iv->data.d32); 1807 1808 value = get_unaligned_be32(&iv->data.d32); 1809 b43legacy_write32(dev, offset, value); 1810 1811 iv = (const struct b43legacy_iv *)((const uint8_t *)iv + 1812 sizeof(__be16) + 1813 sizeof(__be32)); 1814 } else { 1815 u16 value; 1816 1817 if (array_size < sizeof(iv->data.d16)) 1818 goto err_format; 1819 array_size -= sizeof(iv->data.d16); 1820 1821 value = be16_to_cpu(iv->data.d16); 1822 b43legacy_write16(dev, offset, value); 1823 1824 iv = (const struct b43legacy_iv *)((const uint8_t *)iv + 1825 sizeof(__be16) + 1826 sizeof(__be16)); 1827 } 1828 } 1829 if (array_size) 1830 goto err_format; 1831 1832 return 0; 1833 1834 err_format: 1835 b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n"); 1836 b43legacy_print_fw_helptext(dev->wl); 1837 1838 return -EPROTO; 1839 } 1840 1841 static int b43legacy_upload_initvals(struct b43legacy_wldev *dev) 1842 { 1843 const size_t hdr_len = sizeof(struct b43legacy_fw_header); 1844 const struct b43legacy_fw_header *hdr; 1845 struct b43legacy_firmware *fw = &dev->fw; 1846 const struct b43legacy_iv *ivals; 1847 size_t count; 1848 int err; 1849 1850 hdr = (const struct b43legacy_fw_header *)(fw->initvals->data); 1851 ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len); 1852 count = be32_to_cpu(hdr->size); 1853 err = b43legacy_write_initvals(dev, ivals, count, 1854 fw->initvals->size - hdr_len); 1855 if (err) 1856 goto out; 1857 if (fw->initvals_band) { 1858 hdr = (const struct b43legacy_fw_header *) 1859 (fw->initvals_band->data); 1860 ivals = (const struct b43legacy_iv *)(fw->initvals_band->data 1861 + hdr_len); 1862 count = be32_to_cpu(hdr->size); 1863 err = b43legacy_write_initvals(dev, ivals, count, 1864 fw->initvals_band->size - hdr_len); 1865 if (err) 1866 goto out; 1867 } 1868 out: 1869 1870 return err; 1871 } 1872 1873 /* Initialize the GPIOs 1874 * https://bcm-specs.sipsolutions.net/GPIO 1875 */ 1876 static int b43legacy_gpio_init(struct b43legacy_wldev *dev) 1877 { 1878 struct ssb_bus *bus = dev->dev->bus; 1879 struct ssb_device *gpiodev, *pcidev = NULL; 1880 u32 mask; 1881 u32 set; 1882 1883 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, 1884 b43legacy_read32(dev, 1885 B43legacy_MMIO_MACCTL) 1886 & 0xFFFF3FFF); 1887 1888 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, 1889 b43legacy_read16(dev, 1890 B43legacy_MMIO_GPIO_MASK) 1891 | 0x000F); 1892 1893 mask = 0x0000001F; 1894 set = 0x0000000F; 1895 if (dev->dev->bus->chip_id == 0x4301) { 1896 mask |= 0x0060; 1897 set |= 0x0060; 1898 } 1899 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) { 1900 b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, 1901 b43legacy_read16(dev, 1902 B43legacy_MMIO_GPIO_MASK) 1903 | 0x0200); 1904 mask |= 0x0200; 1905 set |= 0x0200; 1906 } 1907 if (dev->dev->id.revision >= 2) 1908 mask |= 0x0010; /* FIXME: This is redundant. */ 1909 1910 #ifdef CONFIG_SSB_DRIVER_PCICORE 1911 pcidev = bus->pcicore.dev; 1912 #endif 1913 gpiodev = bus->chipco.dev ? : pcidev; 1914 if (!gpiodev) 1915 return 0; 1916 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 1917 (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL) 1918 & ~mask) | set); 1919 1920 return 0; 1921 } 1922 1923 /* Turn off all GPIO stuff. Call this on module unload, for example. */ 1924 static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev) 1925 { 1926 struct ssb_bus *bus = dev->dev->bus; 1927 struct ssb_device *gpiodev, *pcidev = NULL; 1928 1929 #ifdef CONFIG_SSB_DRIVER_PCICORE 1930 pcidev = bus->pcicore.dev; 1931 #endif 1932 gpiodev = bus->chipco.dev ? : pcidev; 1933 if (!gpiodev) 1934 return; 1935 ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0); 1936 } 1937 1938 /* http://bcm-specs.sipsolutions.net/EnableMac */ 1939 void b43legacy_mac_enable(struct b43legacy_wldev *dev) 1940 { 1941 dev->mac_suspended--; 1942 B43legacy_WARN_ON(dev->mac_suspended < 0); 1943 B43legacy_WARN_ON(irqs_disabled()); 1944 if (dev->mac_suspended == 0) { 1945 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, 1946 b43legacy_read32(dev, 1947 B43legacy_MMIO_MACCTL) 1948 | B43legacy_MACCTL_ENABLED); 1949 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 1950 B43legacy_IRQ_MAC_SUSPENDED); 1951 /* the next two are dummy reads */ 1952 b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 1953 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); 1954 b43legacy_power_saving_ctl_bits(dev, -1, -1); 1955 1956 /* Re-enable IRQs. */ 1957 spin_lock_irq(&dev->wl->irq_lock); 1958 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 1959 dev->irq_mask); 1960 spin_unlock_irq(&dev->wl->irq_lock); 1961 } 1962 } 1963 1964 /* https://bcm-specs.sipsolutions.net/SuspendMAC */ 1965 void b43legacy_mac_suspend(struct b43legacy_wldev *dev) 1966 { 1967 int i; 1968 u32 tmp; 1969 1970 might_sleep(); 1971 B43legacy_WARN_ON(irqs_disabled()); 1972 B43legacy_WARN_ON(dev->mac_suspended < 0); 1973 1974 if (dev->mac_suspended == 0) { 1975 /* Mask IRQs before suspending MAC. Otherwise 1976 * the MAC stays busy and won't suspend. */ 1977 spin_lock_irq(&dev->wl->irq_lock); 1978 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); 1979 spin_unlock_irq(&dev->wl->irq_lock); 1980 b43legacy_synchronize_irq(dev); 1981 1982 b43legacy_power_saving_ctl_bits(dev, -1, 1); 1983 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, 1984 b43legacy_read32(dev, 1985 B43legacy_MMIO_MACCTL) 1986 & ~B43legacy_MACCTL_ENABLED); 1987 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); 1988 for (i = 40; i; i--) { 1989 tmp = b43legacy_read32(dev, 1990 B43legacy_MMIO_GEN_IRQ_REASON); 1991 if (tmp & B43legacy_IRQ_MAC_SUSPENDED) 1992 goto out; 1993 msleep(1); 1994 } 1995 b43legacyerr(dev->wl, "MAC suspend failed\n"); 1996 } 1997 out: 1998 dev->mac_suspended++; 1999 } 2000 2001 static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev) 2002 { 2003 struct b43legacy_wl *wl = dev->wl; 2004 u32 ctl; 2005 u16 cfp_pretbtt; 2006 2007 ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 2008 /* Reset status to STA infrastructure mode. */ 2009 ctl &= ~B43legacy_MACCTL_AP; 2010 ctl &= ~B43legacy_MACCTL_KEEP_CTL; 2011 ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP; 2012 ctl &= ~B43legacy_MACCTL_KEEP_BAD; 2013 ctl &= ~B43legacy_MACCTL_PROMISC; 2014 ctl &= ~B43legacy_MACCTL_BEACPROMISC; 2015 ctl |= B43legacy_MACCTL_INFRA; 2016 2017 if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) 2018 ctl |= B43legacy_MACCTL_AP; 2019 else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)) 2020 ctl &= ~B43legacy_MACCTL_INFRA; 2021 2022 if (wl->filter_flags & FIF_CONTROL) 2023 ctl |= B43legacy_MACCTL_KEEP_CTL; 2024 if (wl->filter_flags & FIF_FCSFAIL) 2025 ctl |= B43legacy_MACCTL_KEEP_BAD; 2026 if (wl->filter_flags & FIF_PLCPFAIL) 2027 ctl |= B43legacy_MACCTL_KEEP_BADPLCP; 2028 if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) 2029 ctl |= B43legacy_MACCTL_BEACPROMISC; 2030 2031 /* Workaround: On old hardware the HW-MAC-address-filter 2032 * doesn't work properly, so always run promisc in filter 2033 * it in software. */ 2034 if (dev->dev->id.revision <= 4) 2035 ctl |= B43legacy_MACCTL_PROMISC; 2036 2037 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl); 2038 2039 cfp_pretbtt = 2; 2040 if ((ctl & B43legacy_MACCTL_INFRA) && 2041 !(ctl & B43legacy_MACCTL_AP)) { 2042 if (dev->dev->bus->chip_id == 0x4306 && 2043 dev->dev->bus->chip_rev == 3) 2044 cfp_pretbtt = 100; 2045 else 2046 cfp_pretbtt = 50; 2047 } 2048 b43legacy_write16(dev, 0x612, cfp_pretbtt); 2049 } 2050 2051 static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev, 2052 u16 rate, 2053 int is_ofdm) 2054 { 2055 u16 offset; 2056 2057 if (is_ofdm) { 2058 offset = 0x480; 2059 offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; 2060 } else { 2061 offset = 0x4C0; 2062 offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2; 2063 } 2064 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20, 2065 b43legacy_shm_read16(dev, 2066 B43legacy_SHM_SHARED, offset)); 2067 } 2068 2069 static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev) 2070 { 2071 switch (dev->phy.type) { 2072 case B43legacy_PHYTYPE_G: 2073 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1); 2074 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1); 2075 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1); 2076 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1); 2077 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1); 2078 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1); 2079 b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1); 2080 fallthrough; 2081 case B43legacy_PHYTYPE_B: 2082 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0); 2083 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0); 2084 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0); 2085 b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0); 2086 break; 2087 default: 2088 B43legacy_BUG_ON(1); 2089 } 2090 } 2091 2092 /* Set the TX-Antenna for management frames sent by firmware. */ 2093 static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev, 2094 int antenna) 2095 { 2096 u16 ant = 0; 2097 u16 tmp; 2098 2099 switch (antenna) { 2100 case B43legacy_ANTENNA0: 2101 ant |= B43legacy_TX4_PHY_ANT0; 2102 break; 2103 case B43legacy_ANTENNA1: 2104 ant |= B43legacy_TX4_PHY_ANT1; 2105 break; 2106 case B43legacy_ANTENNA_AUTO: 2107 ant |= B43legacy_TX4_PHY_ANTLAST; 2108 break; 2109 default: 2110 B43legacy_BUG_ON(1); 2111 } 2112 2113 /* FIXME We also need to set the other flags of the PHY control 2114 * field somewhere. */ 2115 2116 /* For Beacons */ 2117 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2118 B43legacy_SHM_SH_BEACPHYCTL); 2119 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; 2120 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 2121 B43legacy_SHM_SH_BEACPHYCTL, tmp); 2122 /* For ACK/CTS */ 2123 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2124 B43legacy_SHM_SH_ACKCTSPHYCTL); 2125 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; 2126 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 2127 B43legacy_SHM_SH_ACKCTSPHYCTL, tmp); 2128 /* For Probe Resposes */ 2129 tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2130 B43legacy_SHM_SH_PRPHYCTL); 2131 tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; 2132 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 2133 B43legacy_SHM_SH_PRPHYCTL, tmp); 2134 } 2135 2136 /* This is the opposite of b43legacy_chip_init() */ 2137 static void b43legacy_chip_exit(struct b43legacy_wldev *dev) 2138 { 2139 b43legacy_radio_turn_off(dev, 1); 2140 b43legacy_gpio_cleanup(dev); 2141 /* firmware is released later */ 2142 } 2143 2144 /* Initialize the chip 2145 * https://bcm-specs.sipsolutions.net/ChipInit 2146 */ 2147 static int b43legacy_chip_init(struct b43legacy_wldev *dev) 2148 { 2149 struct b43legacy_phy *phy = &dev->phy; 2150 int err; 2151 int tmp; 2152 u32 value32, macctl; 2153 u16 value16; 2154 2155 /* Initialize the MAC control */ 2156 macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED; 2157 if (dev->phy.gmode) 2158 macctl |= B43legacy_MACCTL_GMODE; 2159 macctl |= B43legacy_MACCTL_INFRA; 2160 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); 2161 2162 err = b43legacy_upload_microcode(dev); 2163 if (err) 2164 goto out; /* firmware is released later */ 2165 2166 err = b43legacy_gpio_init(dev); 2167 if (err) 2168 goto out; /* firmware is released later */ 2169 2170 err = b43legacy_upload_initvals(dev); 2171 if (err) 2172 goto err_gpio_clean; 2173 b43legacy_radio_turn_on(dev); 2174 2175 b43legacy_write16(dev, 0x03E6, 0x0000); 2176 err = b43legacy_phy_init(dev); 2177 if (err) 2178 goto err_radio_off; 2179 2180 /* Select initial Interference Mitigation. */ 2181 tmp = phy->interfmode; 2182 phy->interfmode = B43legacy_INTERFMODE_NONE; 2183 b43legacy_radio_set_interference_mitigation(dev, tmp); 2184 2185 b43legacy_phy_set_antenna_diversity(dev); 2186 b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT); 2187 2188 if (phy->type == B43legacy_PHYTYPE_B) { 2189 value16 = b43legacy_read16(dev, 0x005E); 2190 value16 |= 0x0004; 2191 b43legacy_write16(dev, 0x005E, value16); 2192 } 2193 b43legacy_write32(dev, 0x0100, 0x01000000); 2194 if (dev->dev->id.revision < 5) 2195 b43legacy_write32(dev, 0x010C, 0x01000000); 2196 2197 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 2198 value32 &= ~B43legacy_MACCTL_INFRA; 2199 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); 2200 value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 2201 value32 |= B43legacy_MACCTL_INFRA; 2202 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); 2203 2204 if (b43legacy_using_pio(dev)) { 2205 b43legacy_write32(dev, 0x0210, 0x00000100); 2206 b43legacy_write32(dev, 0x0230, 0x00000100); 2207 b43legacy_write32(dev, 0x0250, 0x00000100); 2208 b43legacy_write32(dev, 0x0270, 0x00000100); 2209 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034, 2210 0x0000); 2211 } 2212 2213 /* Probe Response Timeout value */ 2214 /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ 2215 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000); 2216 2217 /* Initially set the wireless operation mode. */ 2218 b43legacy_adjust_opmode(dev); 2219 2220 if (dev->dev->id.revision < 3) { 2221 b43legacy_write16(dev, 0x060E, 0x0000); 2222 b43legacy_write16(dev, 0x0610, 0x8000); 2223 b43legacy_write16(dev, 0x0604, 0x0000); 2224 b43legacy_write16(dev, 0x0606, 0x0200); 2225 } else { 2226 b43legacy_write32(dev, 0x0188, 0x80000000); 2227 b43legacy_write32(dev, 0x018C, 0x02000000); 2228 } 2229 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000); 2230 b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00); 2231 b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00); 2232 b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00); 2233 b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00); 2234 b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00); 2235 b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00); 2236 2237 value32 = ssb_read32(dev->dev, SSB_TMSLOW); 2238 value32 |= B43legacy_TMSLOW_MACPHYCLKEN; 2239 ssb_write32(dev->dev, SSB_TMSLOW, value32); 2240 2241 b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY, 2242 dev->dev->bus->chipco.fast_pwrup_delay); 2243 2244 /* PHY TX errors counter. */ 2245 atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); 2246 2247 B43legacy_WARN_ON(err != 0); 2248 b43legacydbg(dev->wl, "Chip initialized\n"); 2249 out: 2250 return err; 2251 2252 err_radio_off: 2253 b43legacy_radio_turn_off(dev, 1); 2254 err_gpio_clean: 2255 b43legacy_gpio_cleanup(dev); 2256 goto out; 2257 } 2258 2259 static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev) 2260 { 2261 struct b43legacy_phy *phy = &dev->phy; 2262 2263 if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2) 2264 return; 2265 2266 b43legacy_mac_suspend(dev); 2267 b43legacy_phy_lo_g_measure(dev); 2268 b43legacy_mac_enable(dev); 2269 } 2270 2271 static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev) 2272 { 2273 b43legacy_phy_lo_mark_all_unused(dev); 2274 if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) { 2275 b43legacy_mac_suspend(dev); 2276 b43legacy_calc_nrssi_slope(dev); 2277 b43legacy_mac_enable(dev); 2278 } 2279 } 2280 2281 static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev) 2282 { 2283 /* Update device statistics. */ 2284 b43legacy_calculate_link_quality(dev); 2285 } 2286 2287 static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev) 2288 { 2289 b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */ 2290 2291 atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); 2292 wmb(); 2293 } 2294 2295 static void do_periodic_work(struct b43legacy_wldev *dev) 2296 { 2297 unsigned int state; 2298 2299 state = dev->periodic_state; 2300 if (state % 8 == 0) 2301 b43legacy_periodic_every120sec(dev); 2302 if (state % 4 == 0) 2303 b43legacy_periodic_every60sec(dev); 2304 if (state % 2 == 0) 2305 b43legacy_periodic_every30sec(dev); 2306 b43legacy_periodic_every15sec(dev); 2307 } 2308 2309 /* Periodic work locking policy: 2310 * The whole periodic work handler is protected by 2311 * wl->mutex. If another lock is needed somewhere in the 2312 * pwork callchain, it's acquired in-place, where it's needed. 2313 */ 2314 static void b43legacy_periodic_work_handler(struct work_struct *work) 2315 { 2316 struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev, 2317 periodic_work.work); 2318 struct b43legacy_wl *wl = dev->wl; 2319 unsigned long delay; 2320 2321 mutex_lock(&wl->mutex); 2322 2323 if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED)) 2324 goto out; 2325 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP)) 2326 goto out_requeue; 2327 2328 do_periodic_work(dev); 2329 2330 dev->periodic_state++; 2331 out_requeue: 2332 if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST)) 2333 delay = msecs_to_jiffies(50); 2334 else 2335 delay = round_jiffies_relative(HZ * 15); 2336 ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay); 2337 out: 2338 mutex_unlock(&wl->mutex); 2339 } 2340 2341 static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev) 2342 { 2343 struct delayed_work *work = &dev->periodic_work; 2344 2345 dev->periodic_state = 0; 2346 INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler); 2347 ieee80211_queue_delayed_work(dev->wl->hw, work, 0); 2348 } 2349 2350 /* Validate access to the chip (SHM) */ 2351 static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev) 2352 { 2353 u32 value; 2354 u32 shm_backup; 2355 2356 shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0); 2357 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA); 2358 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != 2359 0xAA5555AA) 2360 goto error; 2361 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55); 2362 if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != 2363 0x55AAAA55) 2364 goto error; 2365 b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup); 2366 2367 value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 2368 if ((value | B43legacy_MACCTL_GMODE) != 2369 (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED)) 2370 goto error; 2371 2372 value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); 2373 if (value) 2374 goto error; 2375 2376 return 0; 2377 error: 2378 b43legacyerr(dev->wl, "Failed to validate the chipaccess\n"); 2379 return -ENODEV; 2380 } 2381 2382 static void b43legacy_security_init(struct b43legacy_wldev *dev) 2383 { 2384 dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; 2385 B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); 2386 dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2387 0x0056); 2388 /* KTP is a word address, but we address SHM bytewise. 2389 * So multiply by two. 2390 */ 2391 dev->ktp *= 2; 2392 if (dev->dev->id.revision >= 5) 2393 /* Number of RCMTA address slots */ 2394 b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT, 2395 dev->max_nr_keys - 8); 2396 } 2397 2398 #ifdef CONFIG_B43LEGACY_HWRNG 2399 static int b43legacy_rng_read(struct hwrng *rng, u32 *data) 2400 { 2401 struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv; 2402 unsigned long flags; 2403 2404 /* Don't take wl->mutex here, as it could deadlock with 2405 * hwrng internal locking. It's not needed to take 2406 * wl->mutex here, anyway. */ 2407 2408 spin_lock_irqsave(&wl->irq_lock, flags); 2409 *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG); 2410 spin_unlock_irqrestore(&wl->irq_lock, flags); 2411 2412 return (sizeof(u16)); 2413 } 2414 #endif 2415 2416 static void b43legacy_rng_exit(struct b43legacy_wl *wl) 2417 { 2418 #ifdef CONFIG_B43LEGACY_HWRNG 2419 if (wl->rng_initialized) 2420 hwrng_unregister(&wl->rng); 2421 #endif 2422 } 2423 2424 static int b43legacy_rng_init(struct b43legacy_wl *wl) 2425 { 2426 int err = 0; 2427 2428 #ifdef CONFIG_B43LEGACY_HWRNG 2429 snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), 2430 "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); 2431 wl->rng.name = wl->rng_name; 2432 wl->rng.data_read = b43legacy_rng_read; 2433 wl->rng.priv = (unsigned long)wl; 2434 wl->rng_initialized = 1; 2435 err = hwrng_register(&wl->rng); 2436 if (err) { 2437 wl->rng_initialized = 0; 2438 b43legacyerr(wl, "Failed to register the random " 2439 "number generator (%d)\n", err); 2440 } 2441 2442 #endif 2443 return err; 2444 } 2445 2446 static void b43legacy_tx_work(struct work_struct *work) 2447 { 2448 struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, 2449 tx_work); 2450 struct b43legacy_wldev *dev; 2451 struct sk_buff *skb; 2452 int queue_num; 2453 int err = 0; 2454 2455 mutex_lock(&wl->mutex); 2456 dev = wl->current_dev; 2457 if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) { 2458 mutex_unlock(&wl->mutex); 2459 return; 2460 } 2461 2462 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { 2463 while (skb_queue_len(&wl->tx_queue[queue_num])) { 2464 skb = skb_dequeue(&wl->tx_queue[queue_num]); 2465 if (b43legacy_using_pio(dev)) 2466 err = b43legacy_pio_tx(dev, skb); 2467 else 2468 err = b43legacy_dma_tx(dev, skb); 2469 if (err == -ENOSPC) { 2470 wl->tx_queue_stopped[queue_num] = 1; 2471 ieee80211_stop_queue(wl->hw, queue_num); 2472 skb_queue_head(&wl->tx_queue[queue_num], skb); 2473 break; 2474 } 2475 if (unlikely(err)) 2476 dev_kfree_skb(skb); /* Drop it */ 2477 err = 0; 2478 } 2479 2480 if (!err) 2481 wl->tx_queue_stopped[queue_num] = 0; 2482 } 2483 2484 mutex_unlock(&wl->mutex); 2485 } 2486 2487 static void b43legacy_op_tx(struct ieee80211_hw *hw, 2488 struct ieee80211_tx_control *control, 2489 struct sk_buff *skb) 2490 { 2491 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 2492 2493 if (unlikely(skb->len < 2 + 2 + 6)) { 2494 /* Too short, this can't be a valid frame. */ 2495 dev_kfree_skb_any(skb); 2496 return; 2497 } 2498 B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags); 2499 2500 skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb); 2501 if (!wl->tx_queue_stopped[skb->queue_mapping]) 2502 ieee80211_queue_work(wl->hw, &wl->tx_work); 2503 else 2504 ieee80211_stop_queue(wl->hw, skb->queue_mapping); 2505 } 2506 2507 static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, 2508 struct ieee80211_vif *vif, u16 queue, 2509 const struct ieee80211_tx_queue_params *params) 2510 { 2511 return 0; 2512 } 2513 2514 static int b43legacy_op_get_stats(struct ieee80211_hw *hw, 2515 struct ieee80211_low_level_stats *stats) 2516 { 2517 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 2518 unsigned long flags; 2519 2520 spin_lock_irqsave(&wl->irq_lock, flags); 2521 memcpy(stats, &wl->ieee_stats, sizeof(*stats)); 2522 spin_unlock_irqrestore(&wl->irq_lock, flags); 2523 2524 return 0; 2525 } 2526 2527 static const char *phymode_to_string(unsigned int phymode) 2528 { 2529 switch (phymode) { 2530 case B43legacy_PHYMODE_B: 2531 return "B"; 2532 case B43legacy_PHYMODE_G: 2533 return "G"; 2534 default: 2535 B43legacy_BUG_ON(1); 2536 } 2537 return ""; 2538 } 2539 2540 static int find_wldev_for_phymode(struct b43legacy_wl *wl, 2541 unsigned int phymode, 2542 struct b43legacy_wldev **dev, 2543 bool *gmode) 2544 { 2545 struct b43legacy_wldev *d; 2546 2547 list_for_each_entry(d, &wl->devlist, list) { 2548 if (d->phy.possible_phymodes & phymode) { 2549 /* Ok, this device supports the PHY-mode. 2550 * Set the gmode bit. */ 2551 *gmode = true; 2552 *dev = d; 2553 2554 return 0; 2555 } 2556 } 2557 2558 return -ESRCH; 2559 } 2560 2561 static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev) 2562 { 2563 struct ssb_device *sdev = dev->dev; 2564 u32 tmslow; 2565 2566 tmslow = ssb_read32(sdev, SSB_TMSLOW); 2567 tmslow &= ~B43legacy_TMSLOW_GMODE; 2568 tmslow |= B43legacy_TMSLOW_PHYRESET; 2569 tmslow |= SSB_TMSLOW_FGC; 2570 ssb_write32(sdev, SSB_TMSLOW, tmslow); 2571 msleep(1); 2572 2573 tmslow = ssb_read32(sdev, SSB_TMSLOW); 2574 tmslow &= ~SSB_TMSLOW_FGC; 2575 tmslow |= B43legacy_TMSLOW_PHYRESET; 2576 ssb_write32(sdev, SSB_TMSLOW, tmslow); 2577 msleep(1); 2578 } 2579 2580 /* Expects wl->mutex locked */ 2581 static int b43legacy_switch_phymode(struct b43legacy_wl *wl, 2582 unsigned int new_mode) 2583 { 2584 struct b43legacy_wldev *up_dev; 2585 struct b43legacy_wldev *down_dev; 2586 int err; 2587 bool gmode = false; 2588 int prev_status; 2589 2590 err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); 2591 if (err) { 2592 b43legacyerr(wl, "Could not find a device for %s-PHY mode\n", 2593 phymode_to_string(new_mode)); 2594 return err; 2595 } 2596 if ((up_dev == wl->current_dev) && 2597 (!!wl->current_dev->phy.gmode == !!gmode)) 2598 /* This device is already running. */ 2599 return 0; 2600 b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n", 2601 phymode_to_string(new_mode)); 2602 down_dev = wl->current_dev; 2603 2604 prev_status = b43legacy_status(down_dev); 2605 /* Shutdown the currently running core. */ 2606 if (prev_status >= B43legacy_STAT_STARTED) 2607 b43legacy_wireless_core_stop(down_dev); 2608 if (prev_status >= B43legacy_STAT_INITIALIZED) 2609 b43legacy_wireless_core_exit(down_dev); 2610 2611 if (down_dev != up_dev) 2612 /* We switch to a different core, so we put PHY into 2613 * RESET on the old core. */ 2614 b43legacy_put_phy_into_reset(down_dev); 2615 2616 /* Now start the new core. */ 2617 up_dev->phy.gmode = gmode; 2618 if (prev_status >= B43legacy_STAT_INITIALIZED) { 2619 err = b43legacy_wireless_core_init(up_dev); 2620 if (err) { 2621 b43legacyerr(wl, "Fatal: Could not initialize device" 2622 " for newly selected %s-PHY mode\n", 2623 phymode_to_string(new_mode)); 2624 goto init_failure; 2625 } 2626 } 2627 if (prev_status >= B43legacy_STAT_STARTED) { 2628 err = b43legacy_wireless_core_start(up_dev); 2629 if (err) { 2630 b43legacyerr(wl, "Fatal: Could not start device for " 2631 "newly selected %s-PHY mode\n", 2632 phymode_to_string(new_mode)); 2633 b43legacy_wireless_core_exit(up_dev); 2634 goto init_failure; 2635 } 2636 } 2637 B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status); 2638 2639 b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0); 2640 2641 wl->current_dev = up_dev; 2642 2643 return 0; 2644 init_failure: 2645 /* Whoops, failed to init the new core. No core is operating now. */ 2646 wl->current_dev = NULL; 2647 return err; 2648 } 2649 2650 /* Write the short and long frame retry limit values. */ 2651 static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev, 2652 unsigned int short_retry, 2653 unsigned int long_retry) 2654 { 2655 /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing 2656 * the chip-internal counter. */ 2657 short_retry = min(short_retry, (unsigned int)0xF); 2658 long_retry = min(long_retry, (unsigned int)0xF); 2659 2660 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry); 2661 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry); 2662 } 2663 2664 static int b43legacy_op_dev_config(struct ieee80211_hw *hw, 2665 u32 changed) 2666 { 2667 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 2668 struct b43legacy_wldev *dev; 2669 struct b43legacy_phy *phy; 2670 struct ieee80211_conf *conf = &hw->conf; 2671 unsigned long flags; 2672 unsigned int new_phymode = 0xFFFF; 2673 int antenna_tx; 2674 int err = 0; 2675 2676 antenna_tx = B43legacy_ANTENNA_DEFAULT; 2677 2678 mutex_lock(&wl->mutex); 2679 dev = wl->current_dev; 2680 phy = &dev->phy; 2681 2682 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) 2683 b43legacy_set_retry_limits(dev, 2684 conf->short_frame_max_tx_count, 2685 conf->long_frame_max_tx_count); 2686 changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS; 2687 if (!changed) 2688 goto out_unlock_mutex; 2689 2690 /* Switch the PHY mode (if necessary). */ 2691 switch (conf->chandef.chan->band) { 2692 case NL80211_BAND_2GHZ: 2693 if (phy->type == B43legacy_PHYTYPE_B) 2694 new_phymode = B43legacy_PHYMODE_B; 2695 else 2696 new_phymode = B43legacy_PHYMODE_G; 2697 break; 2698 default: 2699 B43legacy_WARN_ON(1); 2700 } 2701 err = b43legacy_switch_phymode(wl, new_phymode); 2702 if (err) 2703 goto out_unlock_mutex; 2704 2705 /* Disable IRQs while reconfiguring the device. 2706 * This makes it possible to drop the spinlock throughout 2707 * the reconfiguration process. */ 2708 spin_lock_irqsave(&wl->irq_lock, flags); 2709 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { 2710 spin_unlock_irqrestore(&wl->irq_lock, flags); 2711 goto out_unlock_mutex; 2712 } 2713 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); 2714 spin_unlock_irqrestore(&wl->irq_lock, flags); 2715 b43legacy_synchronize_irq(dev); 2716 2717 /* Switch to the requested channel. 2718 * The firmware takes care of races with the TX handler. */ 2719 if (conf->chandef.chan->hw_value != phy->channel) 2720 b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value, 2721 0); 2722 2723 dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR); 2724 2725 /* Adjust the desired TX power level. */ 2726 if (conf->power_level != 0) { 2727 if (conf->power_level != phy->power_level) { 2728 phy->power_level = conf->power_level; 2729 b43legacy_phy_xmitpower(dev); 2730 } 2731 } 2732 2733 /* Antennas for RX and management frame TX. */ 2734 b43legacy_mgmtframe_txantenna(dev, antenna_tx); 2735 2736 if (wl->radio_enabled != phy->radio_on) { 2737 if (wl->radio_enabled) { 2738 b43legacy_radio_turn_on(dev); 2739 b43legacyinfo(dev->wl, "Radio turned on by software\n"); 2740 if (!dev->radio_hw_enable) 2741 b43legacyinfo(dev->wl, "The hardware RF-kill" 2742 " button still turns the radio" 2743 " physically off. Press the" 2744 " button to turn it on.\n"); 2745 } else { 2746 b43legacy_radio_turn_off(dev, 0); 2747 b43legacyinfo(dev->wl, "Radio turned off by" 2748 " software\n"); 2749 } 2750 } 2751 2752 spin_lock_irqsave(&wl->irq_lock, flags); 2753 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); 2754 spin_unlock_irqrestore(&wl->irq_lock, flags); 2755 out_unlock_mutex: 2756 mutex_unlock(&wl->mutex); 2757 2758 return err; 2759 } 2760 2761 static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates) 2762 { 2763 struct ieee80211_supported_band *sband = 2764 dev->wl->hw->wiphy->bands[NL80211_BAND_2GHZ]; 2765 const struct ieee80211_rate *rate; 2766 int i; 2767 u16 basic, direct, offset, basic_offset, rateptr; 2768 2769 for (i = 0; i < sband->n_bitrates; i++) { 2770 rate = &sband->bitrates[i]; 2771 2772 if (b43legacy_is_cck_rate(rate->hw_value)) { 2773 direct = B43legacy_SHM_SH_CCKDIRECT; 2774 basic = B43legacy_SHM_SH_CCKBASIC; 2775 offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); 2776 offset &= 0xF; 2777 } else { 2778 direct = B43legacy_SHM_SH_OFDMDIRECT; 2779 basic = B43legacy_SHM_SH_OFDMBASIC; 2780 offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); 2781 offset &= 0xF; 2782 } 2783 2784 rate = ieee80211_get_response_rate(sband, brates, rate->bitrate); 2785 2786 if (b43legacy_is_cck_rate(rate->hw_value)) { 2787 basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); 2788 basic_offset &= 0xF; 2789 } else { 2790 basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); 2791 basic_offset &= 0xF; 2792 } 2793 2794 /* 2795 * Get the pointer that we need to point to 2796 * from the direct map 2797 */ 2798 rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2799 direct + 2 * basic_offset); 2800 /* and write it to the basic map */ 2801 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 2802 basic + 2 * offset, rateptr); 2803 } 2804 } 2805 2806 static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw, 2807 struct ieee80211_vif *vif, 2808 struct ieee80211_bss_conf *conf, 2809 u32 changed) 2810 { 2811 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 2812 struct b43legacy_wldev *dev; 2813 unsigned long flags; 2814 2815 mutex_lock(&wl->mutex); 2816 B43legacy_WARN_ON(wl->vif != vif); 2817 2818 dev = wl->current_dev; 2819 2820 /* Disable IRQs while reconfiguring the device. 2821 * This makes it possible to drop the spinlock throughout 2822 * the reconfiguration process. */ 2823 spin_lock_irqsave(&wl->irq_lock, flags); 2824 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { 2825 spin_unlock_irqrestore(&wl->irq_lock, flags); 2826 goto out_unlock_mutex; 2827 } 2828 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); 2829 2830 if (changed & BSS_CHANGED_BSSID) { 2831 b43legacy_synchronize_irq(dev); 2832 2833 if (conf->bssid) 2834 memcpy(wl->bssid, conf->bssid, ETH_ALEN); 2835 else 2836 eth_zero_addr(wl->bssid); 2837 } 2838 2839 if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) { 2840 if (changed & BSS_CHANGED_BEACON && 2841 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || 2842 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) 2843 b43legacy_update_templates(wl); 2844 2845 if (changed & BSS_CHANGED_BSSID) 2846 b43legacy_write_mac_bssid_templates(dev); 2847 } 2848 spin_unlock_irqrestore(&wl->irq_lock, flags); 2849 2850 b43legacy_mac_suspend(dev); 2851 2852 if (changed & BSS_CHANGED_BEACON_INT && 2853 (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || 2854 b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) 2855 b43legacy_set_beacon_int(dev, conf->beacon_int); 2856 2857 if (changed & BSS_CHANGED_BASIC_RATES) 2858 b43legacy_update_basic_rates(dev, conf->basic_rates); 2859 2860 if (changed & BSS_CHANGED_ERP_SLOT) { 2861 if (conf->use_short_slot) 2862 b43legacy_short_slot_timing_enable(dev); 2863 else 2864 b43legacy_short_slot_timing_disable(dev); 2865 } 2866 2867 b43legacy_mac_enable(dev); 2868 2869 spin_lock_irqsave(&wl->irq_lock, flags); 2870 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); 2871 /* XXX: why? */ 2872 spin_unlock_irqrestore(&wl->irq_lock, flags); 2873 out_unlock_mutex: 2874 mutex_unlock(&wl->mutex); 2875 } 2876 2877 static void b43legacy_op_configure_filter(struct ieee80211_hw *hw, 2878 unsigned int changed, 2879 unsigned int *fflags,u64 multicast) 2880 { 2881 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 2882 struct b43legacy_wldev *dev = wl->current_dev; 2883 unsigned long flags; 2884 2885 if (!dev) { 2886 *fflags = 0; 2887 return; 2888 } 2889 2890 spin_lock_irqsave(&wl->irq_lock, flags); 2891 *fflags &= FIF_ALLMULTI | 2892 FIF_FCSFAIL | 2893 FIF_PLCPFAIL | 2894 FIF_CONTROL | 2895 FIF_OTHER_BSS | 2896 FIF_BCN_PRBRESP_PROMISC; 2897 2898 changed &= FIF_ALLMULTI | 2899 FIF_FCSFAIL | 2900 FIF_PLCPFAIL | 2901 FIF_CONTROL | 2902 FIF_OTHER_BSS | 2903 FIF_BCN_PRBRESP_PROMISC; 2904 2905 wl->filter_flags = *fflags; 2906 2907 if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) 2908 b43legacy_adjust_opmode(dev); 2909 spin_unlock_irqrestore(&wl->irq_lock, flags); 2910 } 2911 2912 /* Locking: wl->mutex */ 2913 static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev) 2914 { 2915 struct b43legacy_wl *wl = dev->wl; 2916 unsigned long flags; 2917 int queue_num; 2918 2919 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) 2920 return; 2921 2922 /* Disable and sync interrupts. We must do this before than 2923 * setting the status to INITIALIZED, as the interrupt handler 2924 * won't care about IRQs then. */ 2925 spin_lock_irqsave(&wl->irq_lock, flags); 2926 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); 2927 b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */ 2928 spin_unlock_irqrestore(&wl->irq_lock, flags); 2929 b43legacy_synchronize_irq(dev); 2930 2931 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); 2932 2933 mutex_unlock(&wl->mutex); 2934 /* Must unlock as it would otherwise deadlock. No races here. 2935 * Cancel the possibly running self-rearming periodic work. */ 2936 cancel_delayed_work_sync(&dev->periodic_work); 2937 cancel_work_sync(&wl->tx_work); 2938 mutex_lock(&wl->mutex); 2939 2940 /* Drain all TX queues. */ 2941 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { 2942 while (skb_queue_len(&wl->tx_queue[queue_num])) 2943 dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num])); 2944 } 2945 2946 b43legacy_mac_suspend(dev); 2947 free_irq(dev->dev->irq, dev); 2948 b43legacydbg(wl, "Wireless interface stopped\n"); 2949 } 2950 2951 /* Locking: wl->mutex */ 2952 static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev) 2953 { 2954 int err; 2955 2956 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED); 2957 2958 drain_txstatus_queue(dev); 2959 err = request_irq(dev->dev->irq, b43legacy_interrupt_handler, 2960 IRQF_SHARED, KBUILD_MODNAME, dev); 2961 if (err) { 2962 b43legacyerr(dev->wl, "Cannot request IRQ-%d\n", 2963 dev->dev->irq); 2964 goto out; 2965 } 2966 /* We are ready to run. */ 2967 ieee80211_wake_queues(dev->wl->hw); 2968 b43legacy_set_status(dev, B43legacy_STAT_STARTED); 2969 2970 /* Start data flow (TX/RX) */ 2971 b43legacy_mac_enable(dev); 2972 b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); 2973 2974 /* Start maintenance work */ 2975 b43legacy_periodic_tasks_setup(dev); 2976 2977 b43legacydbg(dev->wl, "Wireless interface started\n"); 2978 out: 2979 return err; 2980 } 2981 2982 /* Get PHY and RADIO versioning numbers */ 2983 static int b43legacy_phy_versioning(struct b43legacy_wldev *dev) 2984 { 2985 struct b43legacy_phy *phy = &dev->phy; 2986 u32 tmp; 2987 u8 analog_type; 2988 u8 phy_type; 2989 u8 phy_rev; 2990 u16 radio_manuf; 2991 u16 radio_ver; 2992 u16 radio_rev; 2993 int unsupported = 0; 2994 2995 /* Get PHY versioning */ 2996 tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); 2997 analog_type = (tmp & B43legacy_PHYVER_ANALOG) 2998 >> B43legacy_PHYVER_ANALOG_SHIFT; 2999 phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT; 3000 phy_rev = (tmp & B43legacy_PHYVER_VERSION); 3001 switch (phy_type) { 3002 case B43legacy_PHYTYPE_B: 3003 if (phy_rev != 2 && phy_rev != 4 3004 && phy_rev != 6 && phy_rev != 7) 3005 unsupported = 1; 3006 break; 3007 case B43legacy_PHYTYPE_G: 3008 if (phy_rev > 8) 3009 unsupported = 1; 3010 break; 3011 default: 3012 unsupported = 1; 3013 } 3014 if (unsupported) { 3015 b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY " 3016 "(Analog %u, Type %u, Revision %u)\n", 3017 analog_type, phy_type, phy_rev); 3018 return -EOPNOTSUPP; 3019 } 3020 b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n", 3021 analog_type, phy_type, phy_rev); 3022 3023 3024 /* Get RADIO versioning */ 3025 if (dev->dev->bus->chip_id == 0x4317) { 3026 if (dev->dev->bus->chip_rev == 0) 3027 tmp = 0x3205017F; 3028 else if (dev->dev->bus->chip_rev == 1) 3029 tmp = 0x4205017F; 3030 else 3031 tmp = 0x5205017F; 3032 } else { 3033 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, 3034 B43legacy_RADIOCTL_ID); 3035 tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH); 3036 tmp <<= 16; 3037 b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, 3038 B43legacy_RADIOCTL_ID); 3039 tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW); 3040 } 3041 radio_manuf = (tmp & 0x00000FFF); 3042 radio_ver = (tmp & 0x0FFFF000) >> 12; 3043 radio_rev = (tmp & 0xF0000000) >> 28; 3044 switch (phy_type) { 3045 case B43legacy_PHYTYPE_B: 3046 if ((radio_ver & 0xFFF0) != 0x2050) 3047 unsupported = 1; 3048 break; 3049 case B43legacy_PHYTYPE_G: 3050 if (radio_ver != 0x2050) 3051 unsupported = 1; 3052 break; 3053 default: 3054 B43legacy_BUG_ON(1); 3055 } 3056 if (unsupported) { 3057 b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO " 3058 "(Manuf 0x%X, Version 0x%X, Revision %u)\n", 3059 radio_manuf, radio_ver, radio_rev); 3060 return -EOPNOTSUPP; 3061 } 3062 b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X," 3063 " Revision %u\n", radio_manuf, radio_ver, radio_rev); 3064 3065 3066 phy->radio_manuf = radio_manuf; 3067 phy->radio_ver = radio_ver; 3068 phy->radio_rev = radio_rev; 3069 3070 phy->analog = analog_type; 3071 phy->type = phy_type; 3072 phy->rev = phy_rev; 3073 3074 return 0; 3075 } 3076 3077 static void setup_struct_phy_for_init(struct b43legacy_wldev *dev, 3078 struct b43legacy_phy *phy) 3079 { 3080 struct b43legacy_lopair *lo; 3081 int i; 3082 3083 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); 3084 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); 3085 3086 /* Assume the radio is enabled. If it's not enabled, the state will 3087 * immediately get fixed on the first periodic work run. */ 3088 dev->radio_hw_enable = true; 3089 3090 phy->savedpctlreg = 0xFFFF; 3091 phy->aci_enable = false; 3092 phy->aci_wlan_automatic = false; 3093 phy->aci_hw_rssi = false; 3094 3095 lo = phy->_lo_pairs; 3096 if (lo) 3097 memset(lo, 0, sizeof(struct b43legacy_lopair) * 3098 B43legacy_LO_COUNT); 3099 phy->max_lb_gain = 0; 3100 phy->trsw_rx_gain = 0; 3101 3102 /* Set default attenuation values. */ 3103 phy->bbatt = b43legacy_default_baseband_attenuation(dev); 3104 phy->rfatt = b43legacy_default_radio_attenuation(dev); 3105 phy->txctl1 = b43legacy_default_txctl1(dev); 3106 phy->txpwr_offset = 0; 3107 3108 /* NRSSI */ 3109 phy->nrssislope = 0; 3110 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) 3111 phy->nrssi[i] = -1000; 3112 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) 3113 phy->nrssi_lt[i] = i; 3114 3115 phy->lofcal = 0xFFFF; 3116 phy->initval = 0xFFFF; 3117 3118 phy->interfmode = B43legacy_INTERFMODE_NONE; 3119 phy->channel = 0xFF; 3120 } 3121 3122 static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev) 3123 { 3124 /* Flags */ 3125 dev->dfq_valid = false; 3126 3127 /* Stats */ 3128 memset(&dev->stats, 0, sizeof(dev->stats)); 3129 3130 setup_struct_phy_for_init(dev, &dev->phy); 3131 3132 /* IRQ related flags */ 3133 dev->irq_reason = 0; 3134 memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); 3135 dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE; 3136 3137 dev->mac_suspended = 1; 3138 3139 /* Noise calculation context */ 3140 memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); 3141 } 3142 3143 static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev, 3144 bool idle) { 3145 u16 pu_delay = 1050; 3146 3147 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle) 3148 pu_delay = 500; 3149 if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8)) 3150 pu_delay = max(pu_delay, (u16)2400); 3151 3152 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 3153 B43legacy_SHM_SH_SPUWKUP, pu_delay); 3154 } 3155 3156 /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */ 3157 static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev) 3158 { 3159 u16 pretbtt; 3160 3161 /* The time value is in microseconds. */ 3162 if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) 3163 pretbtt = 2; 3164 else 3165 pretbtt = 250; 3166 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 3167 B43legacy_SHM_SH_PRETBTT, pretbtt); 3168 b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt); 3169 } 3170 3171 /* Shutdown a wireless core */ 3172 /* Locking: wl->mutex */ 3173 static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev) 3174 { 3175 struct b43legacy_phy *phy = &dev->phy; 3176 u32 macctl; 3177 3178 B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED); 3179 if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED) 3180 return; 3181 b43legacy_set_status(dev, B43legacy_STAT_UNINIT); 3182 3183 /* Stop the microcode PSM. */ 3184 macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); 3185 macctl &= ~B43legacy_MACCTL_PSM_RUN; 3186 macctl |= B43legacy_MACCTL_PSM_JMP0; 3187 b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); 3188 3189 b43legacy_leds_exit(dev); 3190 b43legacy_rng_exit(dev->wl); 3191 b43legacy_pio_free(dev); 3192 b43legacy_dma_free(dev); 3193 b43legacy_chip_exit(dev); 3194 b43legacy_radio_turn_off(dev, 1); 3195 b43legacy_switch_analog(dev, 0); 3196 if (phy->dyn_tssi_tbl) 3197 kfree(phy->tssi2dbm); 3198 kfree(phy->lo_control); 3199 phy->lo_control = NULL; 3200 if (dev->wl->current_beacon) { 3201 dev_kfree_skb_any(dev->wl->current_beacon); 3202 dev->wl->current_beacon = NULL; 3203 } 3204 3205 ssb_device_disable(dev->dev, 0); 3206 ssb_bus_may_powerdown(dev->dev->bus); 3207 } 3208 3209 static void prepare_phy_data_for_init(struct b43legacy_wldev *dev) 3210 { 3211 struct b43legacy_phy *phy = &dev->phy; 3212 int i; 3213 3214 /* Set default attenuation values. */ 3215 phy->bbatt = b43legacy_default_baseband_attenuation(dev); 3216 phy->rfatt = b43legacy_default_radio_attenuation(dev); 3217 phy->txctl1 = b43legacy_default_txctl1(dev); 3218 phy->txctl2 = 0xFFFF; 3219 phy->txpwr_offset = 0; 3220 3221 /* NRSSI */ 3222 phy->nrssislope = 0; 3223 for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) 3224 phy->nrssi[i] = -1000; 3225 for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) 3226 phy->nrssi_lt[i] = i; 3227 3228 phy->lofcal = 0xFFFF; 3229 phy->initval = 0xFFFF; 3230 3231 phy->aci_enable = false; 3232 phy->aci_wlan_automatic = false; 3233 phy->aci_hw_rssi = false; 3234 3235 phy->antenna_diversity = 0xFFFF; 3236 memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); 3237 memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); 3238 3239 /* Flags */ 3240 phy->calibrated = 0; 3241 3242 if (phy->_lo_pairs) 3243 memset(phy->_lo_pairs, 0, 3244 sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT); 3245 memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain)); 3246 } 3247 3248 /* Initialize a wireless core */ 3249 static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev) 3250 { 3251 struct b43legacy_wl *wl = dev->wl; 3252 struct ssb_bus *bus = dev->dev->bus; 3253 struct b43legacy_phy *phy = &dev->phy; 3254 struct ssb_sprom *sprom = &dev->dev->bus->sprom; 3255 int err; 3256 u32 hf; 3257 u32 tmp; 3258 3259 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); 3260 3261 err = ssb_bus_powerup(bus, 0); 3262 if (err) 3263 goto out; 3264 if (!ssb_device_is_enabled(dev->dev)) { 3265 tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0; 3266 b43legacy_wireless_core_reset(dev, tmp); 3267 } 3268 3269 if ((phy->type == B43legacy_PHYTYPE_B) || 3270 (phy->type == B43legacy_PHYTYPE_G)) { 3271 phy->_lo_pairs = kcalloc(B43legacy_LO_COUNT, 3272 sizeof(struct b43legacy_lopair), 3273 GFP_KERNEL); 3274 if (!phy->_lo_pairs) 3275 return -ENOMEM; 3276 } 3277 setup_struct_wldev_for_init(dev); 3278 3279 err = b43legacy_phy_init_tssi2dbm_table(dev); 3280 if (err) 3281 goto err_kfree_lo_control; 3282 3283 /* Enable IRQ routing to this device. */ 3284 ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev); 3285 3286 prepare_phy_data_for_init(dev); 3287 b43legacy_phy_calibrate(dev); 3288 err = b43legacy_chip_init(dev); 3289 if (err) 3290 goto err_kfree_tssitbl; 3291 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 3292 B43legacy_SHM_SH_WLCOREREV, 3293 dev->dev->id.revision); 3294 hf = b43legacy_hf_read(dev); 3295 if (phy->type == B43legacy_PHYTYPE_G) { 3296 hf |= B43legacy_HF_SYMW; 3297 if (phy->rev == 1) 3298 hf |= B43legacy_HF_GDCW; 3299 if (sprom->boardflags_lo & B43legacy_BFL_PACTRL) 3300 hf |= B43legacy_HF_OFDMPABOOST; 3301 } else if (phy->type == B43legacy_PHYTYPE_B) { 3302 hf |= B43legacy_HF_SYMW; 3303 if (phy->rev >= 2 && phy->radio_ver == 0x2050) 3304 hf &= ~B43legacy_HF_GDCW; 3305 } 3306 b43legacy_hf_write(dev, hf); 3307 3308 b43legacy_set_retry_limits(dev, 3309 B43legacy_DEFAULT_SHORT_RETRY_LIMIT, 3310 B43legacy_DEFAULT_LONG_RETRY_LIMIT); 3311 3312 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 3313 0x0044, 3); 3314 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 3315 0x0046, 2); 3316 3317 /* Disable sending probe responses from firmware. 3318 * Setting the MaxTime to one usec will always trigger 3319 * a timeout, so we never send any probe resp. 3320 * A timeout of zero is infinite. */ 3321 b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 3322 B43legacy_SHM_SH_PRMAXTIME, 1); 3323 3324 b43legacy_rate_memory_init(dev); 3325 3326 /* Minimum Contention Window */ 3327 if (phy->type == B43legacy_PHYTYPE_B) 3328 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 3329 0x0003, 31); 3330 else 3331 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 3332 0x0003, 15); 3333 /* Maximum Contention Window */ 3334 b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 3335 0x0004, 1023); 3336 3337 do { 3338 if (b43legacy_using_pio(dev)) 3339 err = b43legacy_pio_init(dev); 3340 else { 3341 err = b43legacy_dma_init(dev); 3342 if (!err) 3343 b43legacy_qos_init(dev); 3344 } 3345 } while (err == -EAGAIN); 3346 if (err) 3347 goto err_chip_exit; 3348 3349 b43legacy_set_synth_pu_delay(dev, 1); 3350 3351 ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ 3352 b43legacy_upload_card_macaddress(dev); 3353 b43legacy_security_init(dev); 3354 b43legacy_rng_init(wl); 3355 3356 ieee80211_wake_queues(dev->wl->hw); 3357 b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); 3358 3359 b43legacy_leds_init(dev); 3360 out: 3361 return err; 3362 3363 err_chip_exit: 3364 b43legacy_chip_exit(dev); 3365 err_kfree_tssitbl: 3366 if (phy->dyn_tssi_tbl) 3367 kfree(phy->tssi2dbm); 3368 err_kfree_lo_control: 3369 kfree(phy->lo_control); 3370 phy->lo_control = NULL; 3371 ssb_bus_may_powerdown(bus); 3372 B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); 3373 return err; 3374 } 3375 3376 static int b43legacy_op_add_interface(struct ieee80211_hw *hw, 3377 struct ieee80211_vif *vif) 3378 { 3379 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 3380 struct b43legacy_wldev *dev; 3381 unsigned long flags; 3382 int err = -EOPNOTSUPP; 3383 3384 /* TODO: allow AP devices to coexist */ 3385 3386 if (vif->type != NL80211_IFTYPE_AP && 3387 vif->type != NL80211_IFTYPE_STATION && 3388 vif->type != NL80211_IFTYPE_ADHOC) 3389 return -EOPNOTSUPP; 3390 3391 mutex_lock(&wl->mutex); 3392 if (wl->operating) 3393 goto out_mutex_unlock; 3394 3395 b43legacydbg(wl, "Adding Interface type %d\n", vif->type); 3396 3397 dev = wl->current_dev; 3398 wl->operating = true; 3399 wl->vif = vif; 3400 wl->if_type = vif->type; 3401 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 3402 3403 spin_lock_irqsave(&wl->irq_lock, flags); 3404 b43legacy_adjust_opmode(dev); 3405 b43legacy_set_pretbtt(dev); 3406 b43legacy_set_synth_pu_delay(dev, 0); 3407 b43legacy_upload_card_macaddress(dev); 3408 spin_unlock_irqrestore(&wl->irq_lock, flags); 3409 3410 err = 0; 3411 out_mutex_unlock: 3412 mutex_unlock(&wl->mutex); 3413 3414 return err; 3415 } 3416 3417 static void b43legacy_op_remove_interface(struct ieee80211_hw *hw, 3418 struct ieee80211_vif *vif) 3419 { 3420 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 3421 struct b43legacy_wldev *dev = wl->current_dev; 3422 unsigned long flags; 3423 3424 b43legacydbg(wl, "Removing Interface type %d\n", vif->type); 3425 3426 mutex_lock(&wl->mutex); 3427 3428 B43legacy_WARN_ON(!wl->operating); 3429 B43legacy_WARN_ON(wl->vif != vif); 3430 wl->vif = NULL; 3431 3432 wl->operating = false; 3433 3434 spin_lock_irqsave(&wl->irq_lock, flags); 3435 b43legacy_adjust_opmode(dev); 3436 eth_zero_addr(wl->mac_addr); 3437 b43legacy_upload_card_macaddress(dev); 3438 spin_unlock_irqrestore(&wl->irq_lock, flags); 3439 3440 mutex_unlock(&wl->mutex); 3441 } 3442 3443 static int b43legacy_op_start(struct ieee80211_hw *hw) 3444 { 3445 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 3446 struct b43legacy_wldev *dev = wl->current_dev; 3447 int did_init = 0; 3448 int err = 0; 3449 3450 /* Kill all old instance specific information to make sure 3451 * the card won't use it in the short timeframe between start 3452 * and mac80211 reconfiguring it. */ 3453 eth_zero_addr(wl->bssid); 3454 eth_zero_addr(wl->mac_addr); 3455 wl->filter_flags = 0; 3456 wl->beacon0_uploaded = false; 3457 wl->beacon1_uploaded = false; 3458 wl->beacon_templates_virgin = true; 3459 wl->radio_enabled = true; 3460 3461 mutex_lock(&wl->mutex); 3462 3463 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) { 3464 err = b43legacy_wireless_core_init(dev); 3465 if (err) 3466 goto out_mutex_unlock; 3467 did_init = 1; 3468 } 3469 3470 if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { 3471 err = b43legacy_wireless_core_start(dev); 3472 if (err) { 3473 if (did_init) 3474 b43legacy_wireless_core_exit(dev); 3475 goto out_mutex_unlock; 3476 } 3477 } 3478 3479 wiphy_rfkill_start_polling(hw->wiphy); 3480 3481 out_mutex_unlock: 3482 mutex_unlock(&wl->mutex); 3483 3484 return err; 3485 } 3486 3487 static void b43legacy_op_stop(struct ieee80211_hw *hw) 3488 { 3489 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 3490 struct b43legacy_wldev *dev = wl->current_dev; 3491 3492 cancel_work_sync(&(wl->beacon_update_trigger)); 3493 3494 mutex_lock(&wl->mutex); 3495 if (b43legacy_status(dev) >= B43legacy_STAT_STARTED) 3496 b43legacy_wireless_core_stop(dev); 3497 b43legacy_wireless_core_exit(dev); 3498 wl->radio_enabled = false; 3499 mutex_unlock(&wl->mutex); 3500 } 3501 3502 static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw, 3503 struct ieee80211_sta *sta, bool set) 3504 { 3505 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 3506 unsigned long flags; 3507 3508 spin_lock_irqsave(&wl->irq_lock, flags); 3509 b43legacy_update_templates(wl); 3510 spin_unlock_irqrestore(&wl->irq_lock, flags); 3511 3512 return 0; 3513 } 3514 3515 static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx, 3516 struct survey_info *survey) 3517 { 3518 struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); 3519 struct b43legacy_wldev *dev = wl->current_dev; 3520 struct ieee80211_conf *conf = &hw->conf; 3521 3522 if (idx != 0) 3523 return -ENOENT; 3524 3525 survey->channel = conf->chandef.chan; 3526 survey->filled = SURVEY_INFO_NOISE_DBM; 3527 survey->noise = dev->stats.link_noise; 3528 3529 return 0; 3530 } 3531 3532 static const struct ieee80211_ops b43legacy_hw_ops = { 3533 .tx = b43legacy_op_tx, 3534 .conf_tx = b43legacy_op_conf_tx, 3535 .add_interface = b43legacy_op_add_interface, 3536 .remove_interface = b43legacy_op_remove_interface, 3537 .config = b43legacy_op_dev_config, 3538 .bss_info_changed = b43legacy_op_bss_info_changed, 3539 .configure_filter = b43legacy_op_configure_filter, 3540 .get_stats = b43legacy_op_get_stats, 3541 .start = b43legacy_op_start, 3542 .stop = b43legacy_op_stop, 3543 .set_tim = b43legacy_op_beacon_set_tim, 3544 .get_survey = b43legacy_op_get_survey, 3545 .rfkill_poll = b43legacy_rfkill_poll, 3546 }; 3547 3548 /* Hard-reset the chip. Do not call this directly. 3549 * Use b43legacy_controller_restart() 3550 */ 3551 static void b43legacy_chip_reset(struct work_struct *work) 3552 { 3553 struct b43legacy_wldev *dev = 3554 container_of(work, struct b43legacy_wldev, restart_work); 3555 struct b43legacy_wl *wl = dev->wl; 3556 int err = 0; 3557 int prev_status; 3558 3559 mutex_lock(&wl->mutex); 3560 3561 prev_status = b43legacy_status(dev); 3562 /* Bring the device down... */ 3563 if (prev_status >= B43legacy_STAT_STARTED) 3564 b43legacy_wireless_core_stop(dev); 3565 if (prev_status >= B43legacy_STAT_INITIALIZED) 3566 b43legacy_wireless_core_exit(dev); 3567 3568 /* ...and up again. */ 3569 if (prev_status >= B43legacy_STAT_INITIALIZED) { 3570 err = b43legacy_wireless_core_init(dev); 3571 if (err) 3572 goto out; 3573 } 3574 if (prev_status >= B43legacy_STAT_STARTED) { 3575 err = b43legacy_wireless_core_start(dev); 3576 if (err) { 3577 b43legacy_wireless_core_exit(dev); 3578 goto out; 3579 } 3580 } 3581 out: 3582 if (err) 3583 wl->current_dev = NULL; /* Failed to init the dev. */ 3584 mutex_unlock(&wl->mutex); 3585 if (err) 3586 b43legacyerr(wl, "Controller restart FAILED\n"); 3587 else 3588 b43legacyinfo(wl, "Controller restarted\n"); 3589 } 3590 3591 static int b43legacy_setup_modes(struct b43legacy_wldev *dev, 3592 int have_bphy, 3593 int have_gphy) 3594 { 3595 struct ieee80211_hw *hw = dev->wl->hw; 3596 struct b43legacy_phy *phy = &dev->phy; 3597 3598 phy->possible_phymodes = 0; 3599 if (have_bphy) { 3600 hw->wiphy->bands[NL80211_BAND_2GHZ] = 3601 &b43legacy_band_2GHz_BPHY; 3602 phy->possible_phymodes |= B43legacy_PHYMODE_B; 3603 } 3604 3605 if (have_gphy) { 3606 hw->wiphy->bands[NL80211_BAND_2GHZ] = 3607 &b43legacy_band_2GHz_GPHY; 3608 phy->possible_phymodes |= B43legacy_PHYMODE_G; 3609 } 3610 3611 return 0; 3612 } 3613 3614 static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev) 3615 { 3616 /* We release firmware that late to not be required to re-request 3617 * is all the time when we reinit the core. */ 3618 b43legacy_release_firmware(dev); 3619 } 3620 3621 static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev) 3622 { 3623 struct b43legacy_wl *wl = dev->wl; 3624 struct ssb_bus *bus = dev->dev->bus; 3625 struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL; 3626 int err; 3627 int have_bphy = 0; 3628 int have_gphy = 0; 3629 u32 tmp; 3630 3631 /* Do NOT do any device initialization here. 3632 * Do it in wireless_core_init() instead. 3633 * This function is for gathering basic information about the HW, only. 3634 * Also some structs may be set up here. But most likely you want to 3635 * have that in core_init(), too. 3636 */ 3637 3638 err = ssb_bus_powerup(bus, 0); 3639 if (err) { 3640 b43legacyerr(wl, "Bus powerup failed\n"); 3641 goto out; 3642 } 3643 /* Get the PHY type. */ 3644 if (dev->dev->id.revision >= 5) { 3645 u32 tmshigh; 3646 3647 tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); 3648 have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY); 3649 if (!have_gphy) 3650 have_bphy = 1; 3651 } else if (dev->dev->id.revision == 4) 3652 have_gphy = 1; 3653 else 3654 have_bphy = 1; 3655 3656 dev->phy.gmode = (have_gphy || have_bphy); 3657 dev->phy.radio_on = true; 3658 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; 3659 b43legacy_wireless_core_reset(dev, tmp); 3660 3661 err = b43legacy_phy_versioning(dev); 3662 if (err) 3663 goto err_powerdown; 3664 /* Check if this device supports multiband. */ 3665 if (!pdev || 3666 (pdev->device != 0x4312 && 3667 pdev->device != 0x4319 && 3668 pdev->device != 0x4324)) { 3669 /* No multiband support. */ 3670 have_bphy = 0; 3671 have_gphy = 0; 3672 switch (dev->phy.type) { 3673 case B43legacy_PHYTYPE_B: 3674 have_bphy = 1; 3675 break; 3676 case B43legacy_PHYTYPE_G: 3677 have_gphy = 1; 3678 break; 3679 default: 3680 B43legacy_BUG_ON(1); 3681 } 3682 } 3683 dev->phy.gmode = (have_gphy || have_bphy); 3684 tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; 3685 b43legacy_wireless_core_reset(dev, tmp); 3686 3687 err = b43legacy_validate_chipaccess(dev); 3688 if (err) 3689 goto err_powerdown; 3690 err = b43legacy_setup_modes(dev, have_bphy, have_gphy); 3691 if (err) 3692 goto err_powerdown; 3693 3694 /* Now set some default "current_dev" */ 3695 if (!wl->current_dev) 3696 wl->current_dev = dev; 3697 INIT_WORK(&dev->restart_work, b43legacy_chip_reset); 3698 3699 b43legacy_radio_turn_off(dev, 1); 3700 b43legacy_switch_analog(dev, 0); 3701 ssb_device_disable(dev->dev, 0); 3702 ssb_bus_may_powerdown(bus); 3703 3704 out: 3705 return err; 3706 3707 err_powerdown: 3708 ssb_bus_may_powerdown(bus); 3709 return err; 3710 } 3711 3712 static void b43legacy_one_core_detach(struct ssb_device *dev) 3713 { 3714 struct b43legacy_wldev *wldev; 3715 struct b43legacy_wl *wl; 3716 3717 /* Do not cancel ieee80211-workqueue based work here. 3718 * See comment in b43legacy_remove(). */ 3719 3720 wldev = ssb_get_drvdata(dev); 3721 wl = wldev->wl; 3722 b43legacy_debugfs_remove_device(wldev); 3723 b43legacy_wireless_core_detach(wldev); 3724 list_del(&wldev->list); 3725 wl->nr_devs--; 3726 ssb_set_drvdata(dev, NULL); 3727 kfree(wldev); 3728 } 3729 3730 static int b43legacy_one_core_attach(struct ssb_device *dev, 3731 struct b43legacy_wl *wl) 3732 { 3733 struct b43legacy_wldev *wldev; 3734 int err = -ENOMEM; 3735 3736 wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); 3737 if (!wldev) 3738 goto out; 3739 3740 wldev->dev = dev; 3741 wldev->wl = wl; 3742 b43legacy_set_status(wldev, B43legacy_STAT_UNINIT); 3743 wldev->bad_frames_preempt = modparam_bad_frames_preempt; 3744 tasklet_setup(&wldev->isr_tasklet, b43legacy_interrupt_tasklet); 3745 if (modparam_pio) 3746 wldev->__using_pio = true; 3747 INIT_LIST_HEAD(&wldev->list); 3748 3749 err = b43legacy_wireless_core_attach(wldev); 3750 if (err) 3751 goto err_kfree_wldev; 3752 3753 list_add(&wldev->list, &wl->devlist); 3754 wl->nr_devs++; 3755 ssb_set_drvdata(dev, wldev); 3756 b43legacy_debugfs_add_device(wldev); 3757 out: 3758 return err; 3759 3760 err_kfree_wldev: 3761 kfree(wldev); 3762 return err; 3763 } 3764 3765 static void b43legacy_sprom_fixup(struct ssb_bus *bus) 3766 { 3767 /* boardflags workarounds */ 3768 if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && 3769 bus->boardinfo.type == 0x4E && 3770 bus->sprom.board_rev > 0x40) 3771 bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL; 3772 } 3773 3774 static void b43legacy_wireless_exit(struct ssb_device *dev, 3775 struct b43legacy_wl *wl) 3776 { 3777 struct ieee80211_hw *hw = wl->hw; 3778 3779 ssb_set_devtypedata(dev, NULL); 3780 ieee80211_free_hw(hw); 3781 } 3782 3783 static int b43legacy_wireless_init(struct ssb_device *dev) 3784 { 3785 struct ssb_sprom *sprom = &dev->bus->sprom; 3786 struct ieee80211_hw *hw; 3787 struct b43legacy_wl *wl; 3788 int err = -ENOMEM; 3789 int queue_num; 3790 3791 b43legacy_sprom_fixup(dev->bus); 3792 3793 hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops); 3794 if (!hw) { 3795 b43legacyerr(NULL, "Could not allocate ieee80211 device\n"); 3796 goto out; 3797 } 3798 3799 /* fill hw info */ 3800 ieee80211_hw_set(hw, RX_INCLUDES_FCS); 3801 ieee80211_hw_set(hw, SIGNAL_DBM); 3802 ieee80211_hw_set(hw, MFP_CAPABLE); /* Allow WPA3 in software */ 3803 3804 hw->wiphy->interface_modes = 3805 BIT(NL80211_IFTYPE_AP) | 3806 BIT(NL80211_IFTYPE_STATION) | 3807 BIT(NL80211_IFTYPE_ADHOC); 3808 hw->queues = 1; /* FIXME: hardware has more queues */ 3809 hw->max_rates = 2; 3810 SET_IEEE80211_DEV(hw, dev->dev); 3811 if (is_valid_ether_addr(sprom->et1mac)) 3812 SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); 3813 else 3814 SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); 3815 3816 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 3817 3818 /* Get and initialize struct b43legacy_wl */ 3819 wl = hw_to_b43legacy_wl(hw); 3820 memset(wl, 0, sizeof(*wl)); 3821 wl->hw = hw; 3822 spin_lock_init(&wl->irq_lock); 3823 spin_lock_init(&wl->leds_lock); 3824 mutex_init(&wl->mutex); 3825 INIT_LIST_HEAD(&wl->devlist); 3826 INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work); 3827 INIT_WORK(&wl->tx_work, b43legacy_tx_work); 3828 3829 /* Initialize queues and flags. */ 3830 for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { 3831 skb_queue_head_init(&wl->tx_queue[queue_num]); 3832 wl->tx_queue_stopped[queue_num] = 0; 3833 } 3834 3835 ssb_set_devtypedata(dev, wl); 3836 b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n", 3837 dev->bus->chip_id, dev->id.revision); 3838 err = 0; 3839 out: 3840 return err; 3841 } 3842 3843 static int b43legacy_probe(struct ssb_device *dev, 3844 const struct ssb_device_id *id) 3845 { 3846 struct b43legacy_wl *wl; 3847 int err; 3848 int first = 0; 3849 3850 wl = ssb_get_devtypedata(dev); 3851 if (!wl) { 3852 /* Probing the first core - setup common struct b43legacy_wl */ 3853 first = 1; 3854 err = b43legacy_wireless_init(dev); 3855 if (err) 3856 goto out; 3857 wl = ssb_get_devtypedata(dev); 3858 B43legacy_WARN_ON(!wl); 3859 } 3860 err = b43legacy_one_core_attach(dev, wl); 3861 if (err) 3862 goto err_wireless_exit; 3863 3864 /* setup and start work to load firmware */ 3865 INIT_WORK(&wl->firmware_load, b43legacy_request_firmware); 3866 schedule_work(&wl->firmware_load); 3867 3868 out: 3869 return err; 3870 3871 err_wireless_exit: 3872 if (first) 3873 b43legacy_wireless_exit(dev, wl); 3874 return err; 3875 } 3876 3877 static void b43legacy_remove(struct ssb_device *dev) 3878 { 3879 struct b43legacy_wl *wl = ssb_get_devtypedata(dev); 3880 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); 3881 3882 /* We must cancel any work here before unregistering from ieee80211, 3883 * as the ieee80211 unreg will destroy the workqueue. */ 3884 cancel_work_sync(&wldev->restart_work); 3885 cancel_work_sync(&wl->firmware_load); 3886 complete(&wldev->fw_load_complete); 3887 3888 B43legacy_WARN_ON(!wl); 3889 if (!wldev->fw.ucode) 3890 return; /* NULL if fw never loaded */ 3891 if (wl->current_dev == wldev) 3892 ieee80211_unregister_hw(wl->hw); 3893 3894 b43legacy_one_core_detach(dev); 3895 3896 if (list_empty(&wl->devlist)) 3897 /* Last core on the chip unregistered. 3898 * We can destroy common struct b43legacy_wl. 3899 */ 3900 b43legacy_wireless_exit(dev, wl); 3901 } 3902 3903 /* Perform a hardware reset. This can be called from any context. */ 3904 void b43legacy_controller_restart(struct b43legacy_wldev *dev, 3905 const char *reason) 3906 { 3907 /* Must avoid requeueing, if we are in shutdown. */ 3908 if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) 3909 return; 3910 b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason); 3911 ieee80211_queue_work(dev->wl->hw, &dev->restart_work); 3912 } 3913 3914 #ifdef CONFIG_PM 3915 3916 static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state) 3917 { 3918 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); 3919 struct b43legacy_wl *wl = wldev->wl; 3920 3921 b43legacydbg(wl, "Suspending...\n"); 3922 3923 mutex_lock(&wl->mutex); 3924 wldev->suspend_init_status = b43legacy_status(wldev); 3925 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) 3926 b43legacy_wireless_core_stop(wldev); 3927 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) 3928 b43legacy_wireless_core_exit(wldev); 3929 mutex_unlock(&wl->mutex); 3930 3931 b43legacydbg(wl, "Device suspended.\n"); 3932 3933 return 0; 3934 } 3935 3936 static int b43legacy_resume(struct ssb_device *dev) 3937 { 3938 struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); 3939 struct b43legacy_wl *wl = wldev->wl; 3940 int err = 0; 3941 3942 b43legacydbg(wl, "Resuming...\n"); 3943 3944 mutex_lock(&wl->mutex); 3945 if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) { 3946 err = b43legacy_wireless_core_init(wldev); 3947 if (err) { 3948 b43legacyerr(wl, "Resume failed at core init\n"); 3949 goto out; 3950 } 3951 } 3952 if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) { 3953 err = b43legacy_wireless_core_start(wldev); 3954 if (err) { 3955 b43legacy_wireless_core_exit(wldev); 3956 b43legacyerr(wl, "Resume failed at core start\n"); 3957 goto out; 3958 } 3959 } 3960 3961 b43legacydbg(wl, "Device resumed.\n"); 3962 out: 3963 mutex_unlock(&wl->mutex); 3964 return err; 3965 } 3966 3967 #else /* CONFIG_PM */ 3968 # define b43legacy_suspend NULL 3969 # define b43legacy_resume NULL 3970 #endif /* CONFIG_PM */ 3971 3972 static struct ssb_driver b43legacy_ssb_driver = { 3973 .name = KBUILD_MODNAME, 3974 .id_table = b43legacy_ssb_tbl, 3975 .probe = b43legacy_probe, 3976 .remove = b43legacy_remove, 3977 .suspend = b43legacy_suspend, 3978 .resume = b43legacy_resume, 3979 }; 3980 3981 static void b43legacy_print_driverinfo(void) 3982 { 3983 const char *feat_pci = "", *feat_leds = "", 3984 *feat_pio = "", *feat_dma = ""; 3985 3986 #ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT 3987 feat_pci = "P"; 3988 #endif 3989 #ifdef CONFIG_B43LEGACY_LEDS 3990 feat_leds = "L"; 3991 #endif 3992 #ifdef CONFIG_B43LEGACY_PIO 3993 feat_pio = "I"; 3994 #endif 3995 #ifdef CONFIG_B43LEGACY_DMA 3996 feat_dma = "D"; 3997 #endif 3998 printk(KERN_INFO "Broadcom 43xx-legacy driver loaded " 3999 "[ Features: %s%s%s%s ]\n", 4000 feat_pci, feat_leds, feat_pio, feat_dma); 4001 } 4002 4003 static int __init b43legacy_init(void) 4004 { 4005 int err; 4006 4007 b43legacy_debugfs_init(); 4008 4009 err = ssb_driver_register(&b43legacy_ssb_driver); 4010 if (err) 4011 goto err_dfs_exit; 4012 4013 b43legacy_print_driverinfo(); 4014 4015 return err; 4016 4017 err_dfs_exit: 4018 b43legacy_debugfs_exit(); 4019 return err; 4020 } 4021 4022 static void __exit b43legacy_exit(void) 4023 { 4024 ssb_driver_unregister(&b43legacy_ssb_driver); 4025 b43legacy_debugfs_exit(); 4026 } 4027 4028 module_init(b43legacy_init) 4029 module_exit(b43legacy_exit) 4030