1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de> 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #define __UNDEF_NO_VERSION__ 19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 20 21 #include <linux/etherdevice.h> 22 #include <linux/sched.h> 23 #include <linux/firmware.h> 24 #include <linux/interrupt.h> 25 #include <linux/module.h> 26 #include <linux/bcma/bcma.h> 27 #include <net/mac80211.h> 28 #include <defs.h> 29 #include "phy/phy_int.h" 30 #include "d11.h" 31 #include "channel.h" 32 #include "scb.h" 33 #include "pub.h" 34 #include "ucode_loader.h" 35 #include "mac80211_if.h" 36 #include "main.h" 37 #include "debug.h" 38 #include "led.h" 39 40 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */ 41 #define BRCMS_FLUSH_TIMEOUT 500 /* msec */ 42 43 /* Flags we support */ 44 #define MAC_FILTERS (FIF_ALLMULTI | \ 45 FIF_FCSFAIL | \ 46 FIF_CONTROL | \ 47 FIF_OTHER_BSS | \ 48 FIF_BCN_PRBRESP_PROMISC | \ 49 FIF_PSPOLL) 50 51 #define CHAN2GHZ(channel, freqency, chflags) { \ 52 .band = NL80211_BAND_2GHZ, \ 53 .center_freq = (freqency), \ 54 .hw_value = (channel), \ 55 .flags = chflags, \ 56 .max_antenna_gain = 0, \ 57 .max_power = 19, \ 58 } 59 60 #define CHAN5GHZ(channel, chflags) { \ 61 .band = NL80211_BAND_5GHZ, \ 62 .center_freq = 5000 + 5*(channel), \ 63 .hw_value = (channel), \ 64 .flags = chflags, \ 65 .max_antenna_gain = 0, \ 66 .max_power = 21, \ 67 } 68 69 #define RATE(rate100m, _flags) { \ 70 .bitrate = (rate100m), \ 71 .flags = (_flags), \ 72 .hw_value = (rate100m / 5), \ 73 } 74 75 struct firmware_hdr { 76 __le32 offset; 77 __le32 len; 78 __le32 idx; 79 }; 80 81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = { 82 "brcm/bcm43xx", 83 NULL 84 }; 85 86 static int n_adapters_found; 87 88 MODULE_AUTHOR("Broadcom Corporation"); 89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); 90 MODULE_LICENSE("Dual BSD/GPL"); 91 /* This needs to be adjusted when brcms_firmwares changes */ 92 MODULE_FIRMWARE("brcm/bcm43xx-0.fw"); 93 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw"); 94 95 /* recognized BCMA Core IDs */ 96 static struct bcma_device_id brcms_coreid_table[] = { 97 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS), 98 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS), 99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS), 100 {}, 101 }; 102 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); 103 104 #if defined(CONFIG_BRCMDBG) 105 /* 106 * Module parameter for setting the debug message level. Available 107 * flags are specified by the BRCM_DL_* macros in 108 * drivers/net/wireless/brcm80211/include/defs.h. 109 */ 110 module_param_named(debug, brcm_msg_level, uint, 0644); 111 #endif 112 113 static struct ieee80211_channel brcms_2ghz_chantable[] = { 114 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), 115 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), 116 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), 117 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), 118 CHAN2GHZ(5, 2432, 0), 119 CHAN2GHZ(6, 2437, 0), 120 CHAN2GHZ(7, 2442, 0), 121 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), 122 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), 123 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), 124 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), 125 CHAN2GHZ(12, 2467, 126 IEEE80211_CHAN_NO_IR | 127 IEEE80211_CHAN_NO_HT40PLUS), 128 CHAN2GHZ(13, 2472, 129 IEEE80211_CHAN_NO_IR | 130 IEEE80211_CHAN_NO_HT40PLUS), 131 CHAN2GHZ(14, 2484, 132 IEEE80211_CHAN_NO_IR | 133 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS | 134 IEEE80211_CHAN_NO_OFDM) 135 }; 136 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { 138 /* UNII-1 */ 139 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), 140 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), 141 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), 142 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), 143 /* UNII-2 */ 144 CHAN5GHZ(52, 145 IEEE80211_CHAN_RADAR | 146 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 147 CHAN5GHZ(56, 148 IEEE80211_CHAN_RADAR | 149 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 150 CHAN5GHZ(60, 151 IEEE80211_CHAN_RADAR | 152 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 153 CHAN5GHZ(64, 154 IEEE80211_CHAN_RADAR | 155 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 156 /* MID */ 157 CHAN5GHZ(100, 158 IEEE80211_CHAN_RADAR | 159 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 160 CHAN5GHZ(104, 161 IEEE80211_CHAN_RADAR | 162 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 163 CHAN5GHZ(108, 164 IEEE80211_CHAN_RADAR | 165 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 166 CHAN5GHZ(112, 167 IEEE80211_CHAN_RADAR | 168 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 169 CHAN5GHZ(116, 170 IEEE80211_CHAN_RADAR | 171 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 172 CHAN5GHZ(120, 173 IEEE80211_CHAN_RADAR | 174 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 175 CHAN5GHZ(124, 176 IEEE80211_CHAN_RADAR | 177 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 178 CHAN5GHZ(128, 179 IEEE80211_CHAN_RADAR | 180 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 181 CHAN5GHZ(132, 182 IEEE80211_CHAN_RADAR | 183 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 184 CHAN5GHZ(136, 185 IEEE80211_CHAN_RADAR | 186 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 187 CHAN5GHZ(140, 188 IEEE80211_CHAN_RADAR | 189 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS | 190 IEEE80211_CHAN_NO_HT40MINUS), 191 /* UNII-3 */ 192 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), 193 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), 194 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), 195 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), 196 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 197 }; 198 199 /* 200 * The rate table is used for both 2.4G and 5G rates. The 201 * latter being a subset as it does not support CCK rates. 202 */ 203 static struct ieee80211_rate legacy_ratetable[] = { 204 RATE(10, 0), 205 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), 206 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), 207 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), 208 RATE(60, 0), 209 RATE(90, 0), 210 RATE(120, 0), 211 RATE(180, 0), 212 RATE(240, 0), 213 RATE(360, 0), 214 RATE(480, 0), 215 RATE(540, 0), 216 }; 217 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = { 219 .band = NL80211_BAND_2GHZ, 220 .channels = brcms_2ghz_chantable, 221 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), 222 .bitrates = legacy_ratetable, 223 .n_bitrates = ARRAY_SIZE(legacy_ratetable), 224 .ht_cap = { 225 /* from include/linux/ieee80211.h */ 226 .cap = IEEE80211_HT_CAP_GRN_FLD | 227 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40, 228 .ht_supported = true, 229 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 230 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 231 .mcs = { 232 /* placeholders for now */ 233 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 234 .rx_highest = cpu_to_le16(500), 235 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 236 } 237 }; 238 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = { 240 .band = NL80211_BAND_5GHZ, 241 .channels = brcms_5ghz_nphy_chantable, 242 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), 243 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, 244 .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 245 BRCMS_LEGACY_5G_RATE_OFFSET, 246 .ht_cap = { 247 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | 248 IEEE80211_HT_CAP_SGI_40, 249 .ht_supported = true, 250 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 251 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 252 .mcs = { 253 /* placeholders for now */ 254 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 255 .rx_highest = cpu_to_le16(500), 256 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 257 } 258 }; 259 260 /* flags the given rate in rateset as requested */ 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) 262 { 263 u32 i; 264 265 for (i = 0; i < rs->count; i++) { 266 if (rate != (rs->rates[i] & 0x7f)) 267 continue; 268 269 if (is_br) 270 rs->rates[i] |= BRCMS_RATE_FLAG; 271 else 272 rs->rates[i] &= BRCMS_RATE_MASK; 273 return; 274 } 275 } 276 277 /* 278 * This function frees the WL per-device resources. 279 * 280 * This function frees resources owned by the WL device pointed to 281 * by the wl parameter. 282 * 283 * precondition: can both be called locked and unlocked 284 */ 285 static void brcms_free(struct brcms_info *wl) 286 { 287 struct brcms_timer *t, *next; 288 289 /* free ucode data */ 290 if (wl->fw.fw_cnt) 291 brcms_ucode_data_free(&wl->ucode); 292 if (wl->irq) 293 free_irq(wl->irq, wl); 294 295 /* kill dpc */ 296 tasklet_kill(&wl->tasklet); 297 298 if (wl->pub) { 299 brcms_debugfs_detach(wl->pub); 300 brcms_c_module_unregister(wl->pub, "linux", wl); 301 } 302 303 /* free common resources */ 304 if (wl->wlc) { 305 brcms_c_detach(wl->wlc); 306 wl->wlc = NULL; 307 wl->pub = NULL; 308 } 309 310 /* virtual interface deletion is deferred so we cannot spinwait */ 311 312 /* wait for all pending callbacks to complete */ 313 while (atomic_read(&wl->callbacks) > 0) 314 schedule(); 315 316 /* free timers */ 317 for (t = wl->timers; t; t = next) { 318 next = t->next; 319 #ifdef DEBUG 320 kfree(t->name); 321 #endif 322 kfree(t); 323 } 324 } 325 326 /* 327 * called from both kernel as from this kernel module (error flow on attach) 328 * precondition: perimeter lock is not acquired. 329 */ 330 static void brcms_remove(struct bcma_device *pdev) 331 { 332 struct ieee80211_hw *hw = bcma_get_drvdata(pdev); 333 struct brcms_info *wl = hw->priv; 334 335 if (wl->wlc) { 336 brcms_led_unregister(wl); 337 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); 338 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 339 ieee80211_unregister_hw(hw); 340 } 341 342 brcms_free(wl); 343 344 bcma_set_drvdata(pdev, NULL); 345 ieee80211_free_hw(hw); 346 } 347 348 /* 349 * Precondition: Since this function is called in brcms_pci_probe() context, 350 * no locking is required. 351 */ 352 static void brcms_release_fw(struct brcms_info *wl) 353 { 354 int i; 355 for (i = 0; i < MAX_FW_IMAGES; i++) { 356 release_firmware(wl->fw.fw_bin[i]); 357 release_firmware(wl->fw.fw_hdr[i]); 358 } 359 } 360 361 /* 362 * Precondition: Since this function is called in brcms_pci_probe() context, 363 * no locking is required. 364 */ 365 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) 366 { 367 int status; 368 struct device *device = &pdev->dev; 369 char fw_name[100]; 370 int i; 371 372 memset(&wl->fw, 0, sizeof(struct brcms_firmware)); 373 for (i = 0; i < MAX_FW_IMAGES; i++) { 374 if (brcms_firmwares[i] == NULL) 375 break; 376 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], 377 UCODE_LOADER_API_VER); 378 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); 379 if (status) { 380 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 381 KBUILD_MODNAME, fw_name); 382 return status; 383 } 384 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], 385 UCODE_LOADER_API_VER); 386 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); 387 if (status) { 388 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 389 KBUILD_MODNAME, fw_name); 390 return status; 391 } 392 wl->fw.hdr_num_entries[i] = 393 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); 394 } 395 wl->fw.fw_cnt = i; 396 status = brcms_ucode_data_init(wl, &wl->ucode); 397 brcms_release_fw(wl); 398 return status; 399 } 400 401 static void brcms_ops_tx(struct ieee80211_hw *hw, 402 struct ieee80211_tx_control *control, 403 struct sk_buff *skb) 404 { 405 struct brcms_info *wl = hw->priv; 406 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 407 408 spin_lock_bh(&wl->lock); 409 if (!wl->pub->up) { 410 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); 411 kfree_skb(skb); 412 goto done; 413 } 414 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) 415 tx_info->rate_driver_data[0] = control->sta; 416 done: 417 spin_unlock_bh(&wl->lock); 418 } 419 420 static int brcms_ops_start(struct ieee80211_hw *hw) 421 { 422 struct brcms_info *wl = hw->priv; 423 bool blocked; 424 int err; 425 426 if (!wl->ucode.bcm43xx_bomminor) { 427 err = brcms_request_fw(wl, wl->wlc->hw->d11core); 428 if (err) 429 return -ENOENT; 430 } 431 432 ieee80211_wake_queues(hw); 433 spin_lock_bh(&wl->lock); 434 blocked = brcms_rfkill_set_hw_state(wl); 435 spin_unlock_bh(&wl->lock); 436 if (!blocked) 437 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 438 439 spin_lock_bh(&wl->lock); 440 /* avoid acknowledging frames before a non-monitor device is added */ 441 wl->mute_tx = true; 442 443 if (!wl->pub->up) 444 if (!blocked) 445 err = brcms_up(wl); 446 else 447 err = -ERFKILL; 448 else 449 err = -ENODEV; 450 spin_unlock_bh(&wl->lock); 451 452 if (err != 0) 453 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", 454 __func__, err); 455 456 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); 457 return err; 458 } 459 460 static void brcms_ops_stop(struct ieee80211_hw *hw) 461 { 462 struct brcms_info *wl = hw->priv; 463 int status; 464 465 ieee80211_stop_queues(hw); 466 467 if (wl->wlc == NULL) 468 return; 469 470 spin_lock_bh(&wl->lock); 471 status = brcms_c_chipmatch(wl->wlc->hw->d11core); 472 spin_unlock_bh(&wl->lock); 473 if (!status) { 474 brcms_err(wl->wlc->hw->d11core, 475 "wl: brcms_ops_stop: chipmatch failed\n"); 476 return; 477 } 478 479 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); 480 481 /* put driver in down state */ 482 spin_lock_bh(&wl->lock); 483 brcms_down(wl); 484 spin_unlock_bh(&wl->lock); 485 } 486 487 static int 488 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 489 { 490 struct brcms_info *wl = hw->priv; 491 492 /* Just STA, AP and ADHOC for now */ 493 if (vif->type != NL80211_IFTYPE_STATION && 494 vif->type != NL80211_IFTYPE_AP && 495 vif->type != NL80211_IFTYPE_ADHOC) { 496 brcms_err(wl->wlc->hw->d11core, 497 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", 498 __func__, vif->type); 499 return -EOPNOTSUPP; 500 } 501 502 spin_lock_bh(&wl->lock); 503 wl->wlc->vif = vif; 504 wl->mute_tx = false; 505 brcms_c_mute(wl->wlc, false); 506 if (vif->type == NL80211_IFTYPE_STATION) 507 brcms_c_start_station(wl->wlc, vif->addr); 508 else if (vif->type == NL80211_IFTYPE_AP) 509 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, 510 vif->cfg.ssid, vif->cfg.ssid_len); 511 else if (vif->type == NL80211_IFTYPE_ADHOC) 512 brcms_c_start_adhoc(wl->wlc, vif->addr); 513 spin_unlock_bh(&wl->lock); 514 515 return 0; 516 } 517 518 static void 519 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 520 { 521 struct brcms_info *wl = hw->priv; 522 523 spin_lock_bh(&wl->lock); 524 wl->wlc->vif = NULL; 525 spin_unlock_bh(&wl->lock); 526 } 527 528 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed) 529 { 530 struct ieee80211_conf *conf = &hw->conf; 531 struct brcms_info *wl = hw->priv; 532 struct bcma_device *core = wl->wlc->hw->d11core; 533 int err = 0; 534 int new_int; 535 536 spin_lock_bh(&wl->lock); 537 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { 538 brcms_c_set_beacon_listen_interval(wl->wlc, 539 conf->listen_interval); 540 } 541 if (changed & IEEE80211_CONF_CHANGE_MONITOR) 542 brcms_dbg_info(core, "%s: change monitor mode: %s\n", 543 __func__, conf->flags & IEEE80211_CONF_MONITOR ? 544 "true" : "false"); 545 if (changed & IEEE80211_CONF_CHANGE_PS) 546 brcms_err(core, "%s: change power-save mode: %s (implement)\n", 547 __func__, conf->flags & IEEE80211_CONF_PS ? 548 "true" : "false"); 549 550 if (changed & IEEE80211_CONF_CHANGE_POWER) { 551 err = brcms_c_set_tx_power(wl->wlc, conf->power_level); 552 if (err < 0) { 553 brcms_err(core, "%s: Error setting power_level\n", 554 __func__); 555 goto config_out; 556 } 557 new_int = brcms_c_get_tx_power(wl->wlc); 558 if (new_int != conf->power_level) 559 brcms_err(core, 560 "%s: Power level req != actual, %d %d\n", 561 __func__, conf->power_level, 562 new_int); 563 } 564 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 565 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 || 566 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 567 err = brcms_c_set_channel(wl->wlc, 568 conf->chandef.chan->hw_value); 569 else 570 err = -ENOTSUPP; 571 } 572 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) 573 err = brcms_c_set_rate_limit(wl->wlc, 574 conf->short_frame_max_tx_count, 575 conf->long_frame_max_tx_count); 576 577 config_out: 578 spin_unlock_bh(&wl->lock); 579 return err; 580 } 581 582 static void 583 brcms_ops_bss_info_changed(struct ieee80211_hw *hw, 584 struct ieee80211_vif *vif, 585 struct ieee80211_bss_conf *info, u64 changed) 586 { 587 struct brcms_info *wl = hw->priv; 588 struct bcma_device *core = wl->wlc->hw->d11core; 589 590 if (changed & BSS_CHANGED_ASSOC) { 591 /* association status changed (associated/disassociated) 592 * also implies a change in the AID. 593 */ 594 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME, 595 __func__, vif->cfg.assoc ? "" : "dis"); 596 spin_lock_bh(&wl->lock); 597 brcms_c_associate_upd(wl->wlc, vif->cfg.assoc); 598 spin_unlock_bh(&wl->lock); 599 } 600 if (changed & BSS_CHANGED_ERP_SLOT) { 601 s8 val; 602 603 /* slot timing changed */ 604 if (info->use_short_slot) 605 val = 1; 606 else 607 val = 0; 608 spin_lock_bh(&wl->lock); 609 brcms_c_set_shortslot_override(wl->wlc, val); 610 spin_unlock_bh(&wl->lock); 611 } 612 613 if (changed & BSS_CHANGED_HT) { 614 /* 802.11n parameters changed */ 615 u16 mode = info->ht_operation_mode; 616 617 spin_lock_bh(&wl->lock); 618 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG, 619 mode & IEEE80211_HT_OP_MODE_PROTECTION); 620 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF, 621 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); 622 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS, 623 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); 624 spin_unlock_bh(&wl->lock); 625 } 626 if (changed & BSS_CHANGED_BASIC_RATES) { 627 struct ieee80211_supported_band *bi; 628 u32 br_mask, i; 629 u16 rate; 630 struct brcm_rateset rs; 631 int error; 632 633 /* retrieve the current rates */ 634 spin_lock_bh(&wl->lock); 635 brcms_c_get_current_rateset(wl->wlc, &rs); 636 spin_unlock_bh(&wl->lock); 637 638 br_mask = info->basic_rates; 639 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)]; 640 for (i = 0; i < bi->n_bitrates; i++) { 641 /* convert to internal rate value */ 642 rate = (bi->bitrates[i].bitrate << 1) / 10; 643 644 /* set/clear basic rate flag */ 645 brcms_set_basic_rate(&rs, rate, br_mask & 1); 646 br_mask >>= 1; 647 } 648 649 /* update the rate set */ 650 spin_lock_bh(&wl->lock); 651 error = brcms_c_set_rateset(wl->wlc, &rs); 652 spin_unlock_bh(&wl->lock); 653 if (error) 654 brcms_err(core, "changing basic rates failed: %d\n", 655 error); 656 } 657 if (changed & BSS_CHANGED_BEACON_INT) { 658 /* Beacon interval changed */ 659 spin_lock_bh(&wl->lock); 660 brcms_c_set_beacon_period(wl->wlc, info->beacon_int); 661 spin_unlock_bh(&wl->lock); 662 } 663 if (changed & BSS_CHANGED_BSSID) { 664 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 665 spin_lock_bh(&wl->lock); 666 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); 667 spin_unlock_bh(&wl->lock); 668 } 669 if (changed & BSS_CHANGED_SSID) { 670 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 671 spin_lock_bh(&wl->lock); 672 brcms_c_set_ssid(wl->wlc, vif->cfg.ssid, vif->cfg.ssid_len); 673 spin_unlock_bh(&wl->lock); 674 } 675 if (changed & BSS_CHANGED_BEACON) { 676 /* Beacon data changed, retrieve new beacon (beaconing modes) */ 677 struct sk_buff *beacon; 678 u16 tim_offset = 0; 679 680 spin_lock_bh(&wl->lock); 681 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL, 0); 682 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 683 info->dtim_period); 684 spin_unlock_bh(&wl->lock); 685 } 686 687 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 688 struct sk_buff *probe_resp; 689 690 spin_lock_bh(&wl->lock); 691 probe_resp = ieee80211_proberesp_get(hw, vif); 692 brcms_c_set_new_probe_resp(wl->wlc, probe_resp); 693 spin_unlock_bh(&wl->lock); 694 } 695 696 if (changed & BSS_CHANGED_BEACON_ENABLED) { 697 /* Beaconing should be enabled/disabled (beaconing modes) */ 698 brcms_err(core, "%s: Beacon enabled: %s\n", __func__, 699 info->enable_beacon ? "true" : "false"); 700 if (info->enable_beacon && 701 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) { 702 brcms_c_enable_probe_resp(wl->wlc, true); 703 } else { 704 brcms_c_enable_probe_resp(wl->wlc, false); 705 } 706 } 707 708 if (changed & BSS_CHANGED_CQM) { 709 /* Connection quality monitor config changed */ 710 brcms_err(core, "%s: cqm change: threshold %d, hys %d " 711 " (implement)\n", __func__, info->cqm_rssi_thold, 712 info->cqm_rssi_hyst); 713 } 714 715 if (changed & BSS_CHANGED_IBSS) { 716 /* IBSS join status changed */ 717 brcms_err(core, "%s: IBSS joined: %s (implement)\n", 718 __func__, vif->cfg.ibss_joined ? "true" : "false"); 719 } 720 721 if (changed & BSS_CHANGED_ARP_FILTER) { 722 /* Hardware ARP filter address list or state changed */ 723 brcms_err(core, "%s: arp filtering: %d addresses" 724 " (implement)\n", __func__, vif->cfg.arp_addr_cnt); 725 } 726 727 if (changed & BSS_CHANGED_QOS) { 728 /* 729 * QoS for this association was enabled/disabled. 730 * Note that it is only ever disabled for station mode. 731 */ 732 brcms_err(core, "%s: qos enabled: %s (implement)\n", 733 __func__, info->qos ? "true" : "false"); 734 } 735 return; 736 } 737 738 static void 739 brcms_ops_configure_filter(struct ieee80211_hw *hw, 740 unsigned int changed_flags, 741 unsigned int *total_flags, u64 multicast) 742 { 743 struct brcms_info *wl = hw->priv; 744 struct bcma_device *core = wl->wlc->hw->d11core; 745 746 changed_flags &= MAC_FILTERS; 747 *total_flags &= MAC_FILTERS; 748 749 if (changed_flags & FIF_ALLMULTI) 750 brcms_dbg_info(core, "FIF_ALLMULTI\n"); 751 if (changed_flags & FIF_FCSFAIL) 752 brcms_dbg_info(core, "FIF_FCSFAIL\n"); 753 if (changed_flags & FIF_CONTROL) 754 brcms_dbg_info(core, "FIF_CONTROL\n"); 755 if (changed_flags & FIF_OTHER_BSS) 756 brcms_dbg_info(core, "FIF_OTHER_BSS\n"); 757 if (changed_flags & FIF_PSPOLL) 758 brcms_dbg_info(core, "FIF_PSPOLL\n"); 759 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) 760 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n"); 761 762 spin_lock_bh(&wl->lock); 763 brcms_c_mac_promisc(wl->wlc, *total_flags); 764 spin_unlock_bh(&wl->lock); 765 return; 766 } 767 768 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw, 769 struct ieee80211_vif *vif, 770 const u8 *mac_addr) 771 { 772 struct brcms_info *wl = hw->priv; 773 spin_lock_bh(&wl->lock); 774 brcms_c_scan_start(wl->wlc); 775 spin_unlock_bh(&wl->lock); 776 return; 777 } 778 779 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw, 780 struct ieee80211_vif *vif) 781 { 782 struct brcms_info *wl = hw->priv; 783 spin_lock_bh(&wl->lock); 784 brcms_c_scan_stop(wl->wlc); 785 spin_unlock_bh(&wl->lock); 786 return; 787 } 788 789 static int 790 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 791 unsigned int link_id, u16 queue, 792 const struct ieee80211_tx_queue_params *params) 793 { 794 struct brcms_info *wl = hw->priv; 795 796 spin_lock_bh(&wl->lock); 797 brcms_c_wme_setparams(wl->wlc, queue, params, true); 798 spin_unlock_bh(&wl->lock); 799 800 return 0; 801 } 802 803 static int 804 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 805 struct ieee80211_sta *sta) 806 { 807 struct brcms_info *wl = hw->priv; 808 struct scb *scb = &wl->wlc->pri_scb; 809 810 brcms_c_init_scb(scb); 811 812 wl->pub->global_ampdu = &(scb->scb_ampdu); 813 wl->pub->global_ampdu->max_pdu = 16; 814 815 /* 816 * minstrel_ht initiates addBA on our behalf by calling 817 * ieee80211_start_tx_ba_session() 818 */ 819 return 0; 820 } 821 822 static int 823 brcms_ops_ampdu_action(struct ieee80211_hw *hw, 824 struct ieee80211_vif *vif, 825 struct ieee80211_ampdu_params *params) 826 { 827 struct brcms_info *wl = hw->priv; 828 struct scb *scb = &wl->wlc->pri_scb; 829 int status; 830 struct ieee80211_sta *sta = params->sta; 831 enum ieee80211_ampdu_mlme_action action = params->action; 832 u16 tid = params->tid; 833 834 if (WARN_ON(scb->magic != SCB_MAGIC)) 835 return -EIDRM; 836 switch (action) { 837 case IEEE80211_AMPDU_RX_START: 838 break; 839 case IEEE80211_AMPDU_RX_STOP: 840 break; 841 case IEEE80211_AMPDU_TX_START: 842 spin_lock_bh(&wl->lock); 843 status = brcms_c_aggregatable(wl->wlc, tid); 844 spin_unlock_bh(&wl->lock); 845 if (!status) { 846 brcms_dbg_ht(wl->wlc->hw->d11core, 847 "START: tid %d is not agg\'able\n", tid); 848 return -EINVAL; 849 } 850 return IEEE80211_AMPDU_TX_START_IMMEDIATE; 851 852 case IEEE80211_AMPDU_TX_STOP_CONT: 853 case IEEE80211_AMPDU_TX_STOP_FLUSH: 854 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 855 spin_lock_bh(&wl->lock); 856 brcms_c_ampdu_flush(wl->wlc, sta, tid); 857 spin_unlock_bh(&wl->lock); 858 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 859 break; 860 case IEEE80211_AMPDU_TX_OPERATIONAL: 861 /* 862 * BA window size from ADDBA response ('buf_size') defines how 863 * many outstanding MPDUs are allowed for the BA stream by 864 * recipient and traffic class (this is actually unused by the 865 * rest of the driver). 'ampdu_factor' gives maximum AMPDU size. 866 */ 867 spin_lock_bh(&wl->lock); 868 brcms_c_ampdu_tx_operational(wl->wlc, tid, 869 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + 870 sta->deflink.ht_cap.ampdu_factor)) - 1); 871 spin_unlock_bh(&wl->lock); 872 /* Power save wakeup */ 873 break; 874 default: 875 brcms_err(wl->wlc->hw->d11core, 876 "%s: Invalid command, ignoring\n", __func__); 877 } 878 879 return 0; 880 } 881 882 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw) 883 { 884 struct brcms_info *wl = hw->priv; 885 bool blocked; 886 887 spin_lock_bh(&wl->lock); 888 blocked = brcms_c_check_radio_disabled(wl->wlc); 889 spin_unlock_bh(&wl->lock); 890 891 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 892 } 893 894 static bool brcms_tx_flush_completed(struct brcms_info *wl) 895 { 896 bool result; 897 898 spin_lock_bh(&wl->lock); 899 result = brcms_c_tx_flush_completed(wl->wlc); 900 spin_unlock_bh(&wl->lock); 901 return result; 902 } 903 904 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 905 u32 queues, bool drop) 906 { 907 struct brcms_info *wl = hw->priv; 908 int ret; 909 910 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false"); 911 912 ret = wait_event_timeout(wl->tx_flush_wq, 913 brcms_tx_flush_completed(wl), 914 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT)); 915 916 brcms_dbg_mac80211(wl->wlc->hw->d11core, 917 "ret=%d\n", jiffies_to_msecs(ret)); 918 } 919 920 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 921 { 922 struct brcms_info *wl = hw->priv; 923 u64 tsf; 924 925 spin_lock_bh(&wl->lock); 926 tsf = brcms_c_tsf_get(wl->wlc); 927 spin_unlock_bh(&wl->lock); 928 929 return tsf; 930 } 931 932 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, 933 struct ieee80211_vif *vif, u64 tsf) 934 { 935 struct brcms_info *wl = hw->priv; 936 937 spin_lock_bh(&wl->lock); 938 brcms_c_tsf_set(wl->wlc, tsf); 939 spin_unlock_bh(&wl->lock); 940 } 941 942 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw, 943 struct ieee80211_sta *sta, bool set) 944 { 945 struct brcms_info *wl = hw->priv; 946 struct sk_buff *beacon = NULL; 947 u16 tim_offset = 0; 948 949 spin_lock_bh(&wl->lock); 950 if (wl->wlc->vif) 951 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif, 952 &tim_offset, NULL, 0); 953 if (beacon) 954 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 955 wl->wlc->vif->bss_conf.dtim_period); 956 spin_unlock_bh(&wl->lock); 957 958 return 0; 959 } 960 961 static const struct ieee80211_ops brcms_ops = { 962 .tx = brcms_ops_tx, 963 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 964 .start = brcms_ops_start, 965 .stop = brcms_ops_stop, 966 .add_interface = brcms_ops_add_interface, 967 .remove_interface = brcms_ops_remove_interface, 968 .config = brcms_ops_config, 969 .bss_info_changed = brcms_ops_bss_info_changed, 970 .configure_filter = brcms_ops_configure_filter, 971 .sw_scan_start = brcms_ops_sw_scan_start, 972 .sw_scan_complete = brcms_ops_sw_scan_complete, 973 .conf_tx = brcms_ops_conf_tx, 974 .sta_add = brcms_ops_sta_add, 975 .ampdu_action = brcms_ops_ampdu_action, 976 .rfkill_poll = brcms_ops_rfkill_poll, 977 .flush = brcms_ops_flush, 978 .get_tsf = brcms_ops_get_tsf, 979 .set_tsf = brcms_ops_set_tsf, 980 .set_tim = brcms_ops_beacon_set_tim, 981 }; 982 983 void brcms_dpc(struct tasklet_struct *t) 984 { 985 struct brcms_info *wl; 986 987 wl = from_tasklet(wl, t, tasklet); 988 989 spin_lock_bh(&wl->lock); 990 991 /* call the common second level interrupt handler */ 992 if (wl->pub->up) { 993 if (wl->resched) { 994 unsigned long flags; 995 996 spin_lock_irqsave(&wl->isr_lock, flags); 997 brcms_c_intrsupd(wl->wlc); 998 spin_unlock_irqrestore(&wl->isr_lock, flags); 999 } 1000 1001 wl->resched = brcms_c_dpc(wl->wlc, true); 1002 } 1003 1004 /* brcms_c_dpc() may bring the driver down */ 1005 if (!wl->pub->up) 1006 goto done; 1007 1008 /* re-schedule dpc */ 1009 if (wl->resched) 1010 tasklet_schedule(&wl->tasklet); 1011 else 1012 /* re-enable interrupts */ 1013 brcms_intrson(wl); 1014 1015 done: 1016 spin_unlock_bh(&wl->lock); 1017 wake_up(&wl->tx_flush_wq); 1018 } 1019 1020 static irqreturn_t brcms_isr(int irq, void *dev_id) 1021 { 1022 struct brcms_info *wl; 1023 irqreturn_t ret = IRQ_NONE; 1024 1025 wl = (struct brcms_info *) dev_id; 1026 1027 spin_lock(&wl->isr_lock); 1028 1029 /* call common first level interrupt handler */ 1030 if (brcms_c_isr(wl->wlc)) { 1031 /* schedule second level handler */ 1032 tasklet_schedule(&wl->tasklet); 1033 ret = IRQ_HANDLED; 1034 } 1035 1036 spin_unlock(&wl->isr_lock); 1037 1038 return ret; 1039 } 1040 1041 /* 1042 * is called in brcms_pci_probe() context, therefore no locking required. 1043 */ 1044 static int ieee_hw_rate_init(struct ieee80211_hw *hw) 1045 { 1046 struct brcms_info *wl = hw->priv; 1047 struct brcms_c_info *wlc = wl->wlc; 1048 struct ieee80211_supported_band *band; 1049 u16 phy_type; 1050 1051 hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; 1052 hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; 1053 1054 phy_type = brcms_c_get_phy_type(wl->wlc, 0); 1055 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1056 band = &wlc->bandstate[BAND_2G_INDEX]->band; 1057 *band = brcms_band_2GHz_nphy_template; 1058 if (phy_type == PHY_TYPE_LCN) { 1059 /* Single stream */ 1060 band->ht_cap.mcs.rx_mask[1] = 0; 1061 band->ht_cap.mcs.rx_highest = cpu_to_le16(72); 1062 } 1063 hw->wiphy->bands[NL80211_BAND_2GHZ] = band; 1064 } else { 1065 return -EPERM; 1066 } 1067 1068 /* Assume all bands use the same phy. True for 11n devices. */ 1069 if (wl->pub->_nbands > 1) { 1070 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1071 band = &wlc->bandstate[BAND_5G_INDEX]->band; 1072 *band = brcms_band_5GHz_nphy_template; 1073 hw->wiphy->bands[NL80211_BAND_5GHZ] = band; 1074 } else { 1075 return -EPERM; 1076 } 1077 } 1078 return 0; 1079 } 1080 1081 /* 1082 * is called in brcms_pci_probe() context, therefore no locking required. 1083 */ 1084 static int ieee_hw_init(struct ieee80211_hw *hw) 1085 { 1086 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 1087 ieee80211_hw_set(hw, SIGNAL_DBM); 1088 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 1089 ieee80211_hw_set(hw, MFP_CAPABLE); 1090 1091 hw->extra_tx_headroom = brcms_c_get_header_len(); 1092 hw->queues = N_TX_QUEUES; 1093 hw->max_rates = 2; /* Primary rate and 1 fallback rate */ 1094 1095 /* channel change time is dependent on chip and band */ 1096 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1097 BIT(NL80211_IFTYPE_AP) | 1098 BIT(NL80211_IFTYPE_ADHOC); 1099 1100 /* 1101 * deactivate sending probe responses by ucude, because this will 1102 * cause problems when WPS is used. 1103 * 1104 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 1105 */ 1106 1107 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1108 1109 hw->rate_control_algorithm = "minstrel_ht"; 1110 1111 hw->sta_data_size = 0; 1112 return ieee_hw_rate_init(hw); 1113 } 1114 1115 /* 1116 * attach to the WL device. 1117 * 1118 * Attach to the WL device identified by vendor and device parameters. 1119 * regs is a host accessible memory address pointing to WL device registers. 1120 * 1121 * is called in brcms_bcma_probe() context, therefore no locking required. 1122 */ 1123 static struct brcms_info *brcms_attach(struct bcma_device *pdev) 1124 { 1125 struct brcms_info *wl = NULL; 1126 int unit, err; 1127 struct ieee80211_hw *hw; 1128 u8 perm[ETH_ALEN]; 1129 1130 unit = n_adapters_found; 1131 err = 0; 1132 1133 if (unit < 0) 1134 return NULL; 1135 1136 /* allocate private info */ 1137 hw = bcma_get_drvdata(pdev); 1138 if (hw != NULL) 1139 wl = hw->priv; 1140 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) 1141 return NULL; 1142 wl->wiphy = hw->wiphy; 1143 1144 atomic_set(&wl->callbacks, 0); 1145 1146 init_waitqueue_head(&wl->tx_flush_wq); 1147 1148 /* setup the bottom half handler */ 1149 tasklet_setup(&wl->tasklet, brcms_dpc); 1150 1151 spin_lock_init(&wl->lock); 1152 spin_lock_init(&wl->isr_lock); 1153 1154 /* common load-time initialization */ 1155 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); 1156 if (!wl->wlc) { 1157 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", 1158 KBUILD_MODNAME, err); 1159 goto fail; 1160 } 1161 wl->pub = brcms_c_pub(wl->wlc); 1162 1163 wl->pub->ieee_hw = hw; 1164 1165 /* register our interrupt handler */ 1166 if (request_irq(pdev->irq, brcms_isr, 1167 IRQF_SHARED, KBUILD_MODNAME, wl)) { 1168 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); 1169 goto fail; 1170 } 1171 wl->irq = pdev->irq; 1172 1173 /* register module */ 1174 brcms_c_module_register(wl->pub, "linux", wl, NULL); 1175 1176 if (ieee_hw_init(hw)) { 1177 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, 1178 __func__); 1179 goto fail; 1180 } 1181 1182 brcms_c_regd_init(wl->wlc); 1183 1184 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); 1185 if (WARN_ON(!is_valid_ether_addr(perm))) 1186 goto fail; 1187 SET_IEEE80211_PERM_ADDR(hw, perm); 1188 1189 err = ieee80211_register_hw(hw); 1190 if (err) 1191 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" 1192 "%d\n", __func__, err); 1193 1194 if (wl->pub->srom_ccode[0] && 1195 regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) 1196 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); 1197 1198 brcms_debugfs_attach(wl->pub); 1199 brcms_debugfs_create_files(wl->pub); 1200 n_adapters_found++; 1201 return wl; 1202 1203 fail: 1204 brcms_free(wl); 1205 return NULL; 1206 } 1207 1208 1209 1210 /* 1211 * determines if a device is a WL device, and if so, attaches it. 1212 * 1213 * This function determines if a device pointed to by pdev is a WL device, 1214 * and if so, performs a brcms_attach() on it. 1215 * 1216 * Perimeter lock is initialized in the course of this function. 1217 */ 1218 static int brcms_bcma_probe(struct bcma_device *pdev) 1219 { 1220 struct brcms_info *wl; 1221 struct ieee80211_hw *hw; 1222 int ret; 1223 1224 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", 1225 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, 1226 pdev->irq); 1227 1228 if ((pdev->id.manuf != BCMA_MANUF_BCM) || 1229 (pdev->id.id != BCMA_CORE_80211)) 1230 return -ENODEV; 1231 1232 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); 1233 if (!hw) { 1234 pr_err("%s: ieee80211_alloc_hw failed\n", __func__); 1235 return -ENOMEM; 1236 } 1237 1238 SET_IEEE80211_DEV(hw, &pdev->dev); 1239 1240 bcma_set_drvdata(pdev, hw); 1241 1242 memset(hw->priv, 0, sizeof(*wl)); 1243 1244 wl = brcms_attach(pdev); 1245 if (!wl) { 1246 pr_err("%s: brcms_attach failed!\n", __func__); 1247 ret = -ENODEV; 1248 goto err_free_ieee80211; 1249 } 1250 brcms_led_register(wl); 1251 1252 return 0; 1253 1254 err_free_ieee80211: 1255 ieee80211_free_hw(hw); 1256 return ret; 1257 } 1258 1259 static int brcms_suspend(struct bcma_device *pdev) 1260 { 1261 struct brcms_info *wl; 1262 struct ieee80211_hw *hw; 1263 1264 hw = bcma_get_drvdata(pdev); 1265 wl = hw->priv; 1266 if (!wl) { 1267 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, 1268 __func__); 1269 return -ENODEV; 1270 } 1271 1272 /* only need to flag hw is down for proper resume */ 1273 spin_lock_bh(&wl->lock); 1274 wl->pub->hw_up = false; 1275 spin_unlock_bh(&wl->lock); 1276 1277 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); 1278 1279 return 0; 1280 } 1281 1282 static int brcms_resume(struct bcma_device *pdev) 1283 { 1284 return 0; 1285 } 1286 1287 static struct bcma_driver brcms_bcma_driver = { 1288 .name = KBUILD_MODNAME, 1289 .probe = brcms_bcma_probe, 1290 .suspend = brcms_suspend, 1291 .resume = brcms_resume, 1292 .remove = brcms_remove, 1293 .id_table = brcms_coreid_table, 1294 }; 1295 1296 /* 1297 * This is the main entry point for the brcmsmac driver. 1298 * 1299 * This function is scheduled upon module initialization and 1300 * does the driver registration, which result in brcms_bcma_probe() 1301 * call resulting in the driver bringup. 1302 */ 1303 static void brcms_driver_init(struct work_struct *work) 1304 { 1305 int error; 1306 1307 error = bcma_driver_register(&brcms_bcma_driver); 1308 if (error) 1309 pr_err("%s: register returned %d\n", __func__, error); 1310 } 1311 1312 static DECLARE_WORK(brcms_driver_work, brcms_driver_init); 1313 1314 static int __init brcms_module_init(void) 1315 { 1316 brcms_debugfs_init(); 1317 if (!schedule_work(&brcms_driver_work)) 1318 return -EBUSY; 1319 1320 return 0; 1321 } 1322 1323 /* 1324 * This function unloads the brcmsmac driver from the system. 1325 * 1326 * This function unconditionally unloads the brcmsmac driver module from the 1327 * system. 1328 * 1329 */ 1330 static void __exit brcms_module_exit(void) 1331 { 1332 cancel_work_sync(&brcms_driver_work); 1333 bcma_driver_unregister(&brcms_bcma_driver); 1334 brcms_debugfs_exit(); 1335 } 1336 1337 module_init(brcms_module_init); 1338 module_exit(brcms_module_exit); 1339 1340 /* 1341 * precondition: perimeter lock has been acquired 1342 */ 1343 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, 1344 bool state, int prio) 1345 { 1346 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); 1347 } 1348 1349 /* 1350 * precondition: perimeter lock has been acquired 1351 */ 1352 void brcms_init(struct brcms_info *wl) 1353 { 1354 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", 1355 wl->pub->unit); 1356 brcms_reset(wl); 1357 brcms_c_init(wl->wlc, wl->mute_tx); 1358 } 1359 1360 /* 1361 * precondition: perimeter lock has been acquired 1362 */ 1363 uint brcms_reset(struct brcms_info *wl) 1364 { 1365 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); 1366 brcms_c_reset(wl->wlc); 1367 1368 /* dpc will not be rescheduled */ 1369 wl->resched = false; 1370 1371 /* inform publicly that interface is down */ 1372 wl->pub->up = false; 1373 1374 return 0; 1375 } 1376 1377 void brcms_fatal_error(struct brcms_info *wl) 1378 { 1379 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", 1380 wl->wlc->pub->unit); 1381 brcms_reset(wl); 1382 ieee80211_restart_hw(wl->pub->ieee_hw); 1383 } 1384 1385 /* 1386 * These are interrupt on/off entry points. Disable interrupts 1387 * during interrupt state transition. 1388 */ 1389 void brcms_intrson(struct brcms_info *wl) 1390 { 1391 unsigned long flags; 1392 1393 spin_lock_irqsave(&wl->isr_lock, flags); 1394 brcms_c_intrson(wl->wlc); 1395 spin_unlock_irqrestore(&wl->isr_lock, flags); 1396 } 1397 1398 u32 brcms_intrsoff(struct brcms_info *wl) 1399 { 1400 unsigned long flags; 1401 u32 status; 1402 1403 spin_lock_irqsave(&wl->isr_lock, flags); 1404 status = brcms_c_intrsoff(wl->wlc); 1405 spin_unlock_irqrestore(&wl->isr_lock, flags); 1406 return status; 1407 } 1408 1409 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) 1410 { 1411 unsigned long flags; 1412 1413 spin_lock_irqsave(&wl->isr_lock, flags); 1414 brcms_c_intrsrestore(wl->wlc, macintmask); 1415 spin_unlock_irqrestore(&wl->isr_lock, flags); 1416 } 1417 1418 /* 1419 * precondition: perimeter lock has been acquired 1420 */ 1421 int brcms_up(struct brcms_info *wl) 1422 { 1423 int error = 0; 1424 1425 if (wl->pub->up) 1426 return 0; 1427 1428 error = brcms_c_up(wl->wlc); 1429 1430 return error; 1431 } 1432 1433 /* 1434 * precondition: perimeter lock has been acquired 1435 */ 1436 void brcms_down(struct brcms_info *wl) 1437 __must_hold(&wl->lock) 1438 { 1439 uint callbacks, ret_val = 0; 1440 1441 /* call common down function */ 1442 ret_val = brcms_c_down(wl->wlc); 1443 callbacks = atomic_read(&wl->callbacks) - ret_val; 1444 1445 /* wait for down callbacks to complete */ 1446 spin_unlock_bh(&wl->lock); 1447 1448 /* For HIGH_only driver, it's important to actually schedule other work, 1449 * not just spin wait since everything runs at schedule level 1450 */ 1451 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); 1452 1453 spin_lock_bh(&wl->lock); 1454 } 1455 1456 /* 1457 * precondition: perimeter lock is not acquired 1458 */ 1459 static void _brcms_timer(struct work_struct *work) 1460 { 1461 struct brcms_timer *t = container_of(work, struct brcms_timer, 1462 dly_wrk.work); 1463 1464 spin_lock_bh(&t->wl->lock); 1465 1466 if (t->set) { 1467 if (t->periodic) { 1468 atomic_inc(&t->wl->callbacks); 1469 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, 1470 &t->dly_wrk, 1471 msecs_to_jiffies(t->ms)); 1472 } else { 1473 t->set = false; 1474 } 1475 1476 t->fn(t->arg); 1477 } 1478 1479 atomic_dec(&t->wl->callbacks); 1480 1481 spin_unlock_bh(&t->wl->lock); 1482 } 1483 1484 /* 1485 * Adds a timer to the list. Caller supplies a timer function. 1486 * Is called from wlc. 1487 * 1488 * precondition: perimeter lock has been acquired 1489 */ 1490 struct brcms_timer *brcms_init_timer(struct brcms_info *wl, 1491 void (*fn) (void *arg), 1492 void *arg, const char *name) 1493 { 1494 struct brcms_timer *t; 1495 1496 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC); 1497 if (!t) 1498 return NULL; 1499 1500 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); 1501 t->wl = wl; 1502 t->fn = fn; 1503 t->arg = arg; 1504 t->next = wl->timers; 1505 wl->timers = t; 1506 1507 #ifdef DEBUG 1508 t->name = kstrdup(name, GFP_ATOMIC); 1509 #endif 1510 1511 return t; 1512 } 1513 1514 /* 1515 * adds only the kernel timer since it's going to be more accurate 1516 * as well as it's easier to make it periodic 1517 * 1518 * precondition: perimeter lock has been acquired 1519 */ 1520 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) 1521 { 1522 struct ieee80211_hw *hw = t->wl->pub->ieee_hw; 1523 1524 #ifdef DEBUG 1525 if (t->set) 1526 brcms_dbg_info(t->wl->wlc->hw->d11core, 1527 "%s: Already set. Name: %s, per %d\n", 1528 __func__, t->name, periodic); 1529 #endif 1530 t->ms = ms; 1531 t->periodic = (bool) periodic; 1532 if (!t->set) { 1533 t->set = true; 1534 atomic_inc(&t->wl->callbacks); 1535 } 1536 1537 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); 1538 } 1539 1540 /* 1541 * return true if timer successfully deleted, false if still pending 1542 * 1543 * precondition: perimeter lock has been acquired 1544 */ 1545 bool brcms_del_timer(struct brcms_timer *t) 1546 { 1547 if (t->set) { 1548 t->set = false; 1549 if (!cancel_delayed_work(&t->dly_wrk)) 1550 return false; 1551 1552 atomic_dec(&t->wl->callbacks); 1553 } 1554 1555 return true; 1556 } 1557 1558 /* 1559 * precondition: perimeter lock has been acquired 1560 */ 1561 void brcms_free_timer(struct brcms_timer *t) 1562 { 1563 struct brcms_info *wl = t->wl; 1564 struct brcms_timer *tmp; 1565 1566 /* delete the timer in case it is active */ 1567 brcms_del_timer(t); 1568 1569 if (wl->timers == t) { 1570 wl->timers = wl->timers->next; 1571 #ifdef DEBUG 1572 kfree(t->name); 1573 #endif 1574 kfree(t); 1575 return; 1576 1577 } 1578 1579 tmp = wl->timers; 1580 while (tmp) { 1581 if (tmp->next == t) { 1582 tmp->next = t->next; 1583 #ifdef DEBUG 1584 kfree(t->name); 1585 #endif 1586 kfree(t); 1587 return; 1588 } 1589 tmp = tmp->next; 1590 } 1591 1592 } 1593 1594 /* 1595 * precondition: no locking required 1596 */ 1597 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) 1598 { 1599 int i, entry; 1600 const u8 *pdata; 1601 struct firmware_hdr *hdr; 1602 for (i = 0; i < wl->fw.fw_cnt; i++) { 1603 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1604 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1605 entry++, hdr++) { 1606 u32 len = le32_to_cpu(hdr->len); 1607 if (le32_to_cpu(hdr->idx) == idx) { 1608 pdata = wl->fw.fw_bin[i]->data + 1609 le32_to_cpu(hdr->offset); 1610 *pbuf = kvmalloc(len, GFP_KERNEL); 1611 if (*pbuf == NULL) 1612 goto fail; 1613 memcpy(*pbuf, pdata, len); 1614 return 0; 1615 } 1616 } 1617 } 1618 brcms_err(wl->wlc->hw->d11core, 1619 "ERROR: ucode buf tag:%d can not be found!\n", idx); 1620 *pbuf = NULL; 1621 fail: 1622 return -ENODATA; 1623 } 1624 1625 /* 1626 * Precondition: Since this function is called in brcms_bcma_probe() context, 1627 * no locking is required. 1628 */ 1629 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) 1630 { 1631 int i, entry; 1632 const u8 *pdata; 1633 struct firmware_hdr *hdr; 1634 for (i = 0; i < wl->fw.fw_cnt; i++) { 1635 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1636 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1637 entry++, hdr++) { 1638 if (le32_to_cpu(hdr->idx) == idx) { 1639 pdata = wl->fw.fw_bin[i]->data + 1640 le32_to_cpu(hdr->offset); 1641 if (le32_to_cpu(hdr->len) != 4) { 1642 brcms_err(wl->wlc->hw->d11core, 1643 "ERROR: fw hdr len\n"); 1644 return -ENOMSG; 1645 } 1646 *n_bytes = le32_to_cpu(*((__le32 *) pdata)); 1647 return 0; 1648 } 1649 } 1650 } 1651 brcms_err(wl->wlc->hw->d11core, 1652 "ERROR: ucode tag:%d can not be found!\n", idx); 1653 return -ENOMSG; 1654 } 1655 1656 /* 1657 * precondition: can both be called locked and unlocked 1658 */ 1659 void brcms_ucode_free_buf(void *p) 1660 { 1661 kvfree(p); 1662 } 1663 1664 /* 1665 * checks validity of all firmware images loaded from user space 1666 * 1667 * Precondition: Since this function is called in brcms_bcma_probe() context, 1668 * no locking is required. 1669 */ 1670 int brcms_check_firmwares(struct brcms_info *wl) 1671 { 1672 int i; 1673 int entry; 1674 int rc = 0; 1675 const struct firmware *fw; 1676 const struct firmware *fw_hdr; 1677 struct firmware_hdr *ucode_hdr; 1678 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) { 1679 fw = wl->fw.fw_bin[i]; 1680 fw_hdr = wl->fw.fw_hdr[i]; 1681 if (fw == NULL && fw_hdr == NULL) { 1682 break; 1683 } else if (fw == NULL || fw_hdr == NULL) { 1684 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", 1685 __func__); 1686 rc = -EBADF; 1687 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) { 1688 wiphy_err(wl->wiphy, "%s: non integral fw hdr file " 1689 "size %zu/%zu\n", __func__, fw_hdr->size, 1690 sizeof(struct firmware_hdr)); 1691 rc = -EBADF; 1692 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { 1693 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n", 1694 __func__, fw->size); 1695 rc = -EBADF; 1696 } else { 1697 /* check if ucode section overruns firmware image */ 1698 ucode_hdr = (struct firmware_hdr *)fw_hdr->data; 1699 for (entry = 0; entry < wl->fw.hdr_num_entries[i] && 1700 !rc; entry++, ucode_hdr++) { 1701 if (le32_to_cpu(ucode_hdr->offset) + 1702 le32_to_cpu(ucode_hdr->len) > 1703 fw->size) { 1704 wiphy_err(wl->wiphy, 1705 "%s: conflicting bin/hdr\n", 1706 __func__); 1707 rc = -EBADF; 1708 } 1709 } 1710 } 1711 } 1712 if (rc == 0 && wl->fw.fw_cnt != i) { 1713 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, 1714 wl->fw.fw_cnt); 1715 rc = -EBADF; 1716 } 1717 return rc; 1718 } 1719 1720 /* 1721 * precondition: perimeter lock has been acquired 1722 */ 1723 bool brcms_rfkill_set_hw_state(struct brcms_info *wl) 1724 __must_hold(&wl->lock) 1725 { 1726 bool blocked = brcms_c_check_radio_disabled(wl->wlc); 1727 1728 spin_unlock_bh(&wl->lock); 1729 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 1730 if (blocked) 1731 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); 1732 spin_lock_bh(&wl->lock); 1733 return blocked; 1734 } 1735