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_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards"); 91 MODULE_LICENSE("Dual BSD/GPL"); 92 /* This needs to be adjusted when brcms_firmwares changes */ 93 MODULE_FIRMWARE("brcm/bcm43xx-0.fw"); 94 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw"); 95 96 /* recognized BCMA Core IDs */ 97 static struct bcma_device_id brcms_coreid_table[] = { 98 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS), 99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS), 100 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS), 101 {}, 102 }; 103 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); 104 105 #if defined(CONFIG_BRCMDBG) 106 /* 107 * Module parameter for setting the debug message level. Available 108 * flags are specified by the BRCM_DL_* macros in 109 * drivers/net/wireless/brcm80211/include/defs.h. 110 */ 111 module_param_named(debug, brcm_msg_level, uint, 0644); 112 #endif 113 114 static struct ieee80211_channel brcms_2ghz_chantable[] = { 115 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), 116 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), 117 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), 118 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), 119 CHAN2GHZ(5, 2432, 0), 120 CHAN2GHZ(6, 2437, 0), 121 CHAN2GHZ(7, 2442, 0), 122 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), 123 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), 124 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), 125 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), 126 CHAN2GHZ(12, 2467, 127 IEEE80211_CHAN_NO_IR | 128 IEEE80211_CHAN_NO_HT40PLUS), 129 CHAN2GHZ(13, 2472, 130 IEEE80211_CHAN_NO_IR | 131 IEEE80211_CHAN_NO_HT40PLUS), 132 CHAN2GHZ(14, 2484, 133 IEEE80211_CHAN_NO_IR | 134 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS | 135 IEEE80211_CHAN_NO_OFDM) 136 }; 137 138 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { 139 /* UNII-1 */ 140 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), 141 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), 142 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), 143 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), 144 /* UNII-2 */ 145 CHAN5GHZ(52, 146 IEEE80211_CHAN_RADAR | 147 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 148 CHAN5GHZ(56, 149 IEEE80211_CHAN_RADAR | 150 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 151 CHAN5GHZ(60, 152 IEEE80211_CHAN_RADAR | 153 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 154 CHAN5GHZ(64, 155 IEEE80211_CHAN_RADAR | 156 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 157 /* MID */ 158 CHAN5GHZ(100, 159 IEEE80211_CHAN_RADAR | 160 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 161 CHAN5GHZ(104, 162 IEEE80211_CHAN_RADAR | 163 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 164 CHAN5GHZ(108, 165 IEEE80211_CHAN_RADAR | 166 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 167 CHAN5GHZ(112, 168 IEEE80211_CHAN_RADAR | 169 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 170 CHAN5GHZ(116, 171 IEEE80211_CHAN_RADAR | 172 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 173 CHAN5GHZ(120, 174 IEEE80211_CHAN_RADAR | 175 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 176 CHAN5GHZ(124, 177 IEEE80211_CHAN_RADAR | 178 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 179 CHAN5GHZ(128, 180 IEEE80211_CHAN_RADAR | 181 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 182 CHAN5GHZ(132, 183 IEEE80211_CHAN_RADAR | 184 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 185 CHAN5GHZ(136, 186 IEEE80211_CHAN_RADAR | 187 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 188 CHAN5GHZ(140, 189 IEEE80211_CHAN_RADAR | 190 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS | 191 IEEE80211_CHAN_NO_HT40MINUS), 192 /* UNII-3 */ 193 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), 194 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), 195 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), 196 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), 197 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 198 }; 199 200 /* 201 * The rate table is used for both 2.4G and 5G rates. The 202 * latter being a subset as it does not support CCK rates. 203 */ 204 static struct ieee80211_rate legacy_ratetable[] = { 205 RATE(10, 0), 206 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), 207 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), 208 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), 209 RATE(60, 0), 210 RATE(90, 0), 211 RATE(120, 0), 212 RATE(180, 0), 213 RATE(240, 0), 214 RATE(360, 0), 215 RATE(480, 0), 216 RATE(540, 0), 217 }; 218 219 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = { 220 .band = NL80211_BAND_2GHZ, 221 .channels = brcms_2ghz_chantable, 222 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), 223 .bitrates = legacy_ratetable, 224 .n_bitrates = ARRAY_SIZE(legacy_ratetable), 225 .ht_cap = { 226 /* from include/linux/ieee80211.h */ 227 .cap = IEEE80211_HT_CAP_GRN_FLD | 228 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40, 229 .ht_supported = true, 230 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 231 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 232 .mcs = { 233 /* placeholders for now */ 234 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 235 .rx_highest = cpu_to_le16(500), 236 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 237 } 238 }; 239 240 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = { 241 .band = NL80211_BAND_5GHZ, 242 .channels = brcms_5ghz_nphy_chantable, 243 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), 244 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, 245 .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 246 BRCMS_LEGACY_5G_RATE_OFFSET, 247 .ht_cap = { 248 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | 249 IEEE80211_HT_CAP_SGI_40, 250 .ht_supported = true, 251 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 252 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 253 .mcs = { 254 /* placeholders for now */ 255 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 256 .rx_highest = cpu_to_le16(500), 257 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 258 } 259 }; 260 261 /* flags the given rate in rateset as requested */ 262 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) 263 { 264 u32 i; 265 266 for (i = 0; i < rs->count; i++) { 267 if (rate != (rs->rates[i] & 0x7f)) 268 continue; 269 270 if (is_br) 271 rs->rates[i] |= BRCMS_RATE_FLAG; 272 else 273 rs->rates[i] &= BRCMS_RATE_MASK; 274 return; 275 } 276 } 277 278 /** 279 * This function frees the WL per-device resources. 280 * 281 * This function frees resources owned by the WL device pointed to 282 * by the wl parameter. 283 * 284 * precondition: can both be called locked and unlocked 285 * 286 */ 287 static void brcms_free(struct brcms_info *wl) 288 { 289 struct brcms_timer *t, *next; 290 291 /* free ucode data */ 292 if (wl->fw.fw_cnt) 293 brcms_ucode_data_free(&wl->ucode); 294 if (wl->irq) 295 free_irq(wl->irq, wl); 296 297 /* kill dpc */ 298 tasklet_kill(&wl->tasklet); 299 300 if (wl->pub) { 301 brcms_debugfs_detach(wl->pub); 302 brcms_c_module_unregister(wl->pub, "linux", wl); 303 } 304 305 /* free common resources */ 306 if (wl->wlc) { 307 brcms_c_detach(wl->wlc); 308 wl->wlc = NULL; 309 wl->pub = NULL; 310 } 311 312 /* virtual interface deletion is deferred so we cannot spinwait */ 313 314 /* wait for all pending callbacks to complete */ 315 while (atomic_read(&wl->callbacks) > 0) 316 schedule(); 317 318 /* free timers */ 319 for (t = wl->timers; t; t = next) { 320 next = t->next; 321 #ifdef DEBUG 322 kfree(t->name); 323 #endif 324 kfree(t); 325 } 326 } 327 328 /* 329 * called from both kernel as from this kernel module (error flow on attach) 330 * precondition: perimeter lock is not acquired. 331 */ 332 static void brcms_remove(struct bcma_device *pdev) 333 { 334 struct ieee80211_hw *hw = bcma_get_drvdata(pdev); 335 struct brcms_info *wl = hw->priv; 336 337 if (wl->wlc) { 338 brcms_led_unregister(wl); 339 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); 340 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 341 ieee80211_unregister_hw(hw); 342 } 343 344 brcms_free(wl); 345 346 bcma_set_drvdata(pdev, NULL); 347 ieee80211_free_hw(hw); 348 } 349 350 /* 351 * Precondition: Since this function is called in brcms_pci_probe() context, 352 * no locking is required. 353 */ 354 static void brcms_release_fw(struct brcms_info *wl) 355 { 356 int i; 357 for (i = 0; i < MAX_FW_IMAGES; i++) { 358 release_firmware(wl->fw.fw_bin[i]); 359 release_firmware(wl->fw.fw_hdr[i]); 360 } 361 } 362 363 /* 364 * Precondition: Since this function is called in brcms_pci_probe() context, 365 * no locking is required. 366 */ 367 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) 368 { 369 int status; 370 struct device *device = &pdev->dev; 371 char fw_name[100]; 372 int i; 373 374 memset(&wl->fw, 0, sizeof(struct brcms_firmware)); 375 for (i = 0; i < MAX_FW_IMAGES; i++) { 376 if (brcms_firmwares[i] == NULL) 377 break; 378 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], 379 UCODE_LOADER_API_VER); 380 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); 381 if (status) { 382 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 383 KBUILD_MODNAME, fw_name); 384 return status; 385 } 386 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], 387 UCODE_LOADER_API_VER); 388 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); 389 if (status) { 390 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 391 KBUILD_MODNAME, fw_name); 392 return status; 393 } 394 wl->fw.hdr_num_entries[i] = 395 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); 396 } 397 wl->fw.fw_cnt = i; 398 status = brcms_ucode_data_init(wl, &wl->ucode); 399 brcms_release_fw(wl); 400 return status; 401 } 402 403 static void brcms_ops_tx(struct ieee80211_hw *hw, 404 struct ieee80211_tx_control *control, 405 struct sk_buff *skb) 406 { 407 struct brcms_info *wl = hw->priv; 408 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 409 410 spin_lock_bh(&wl->lock); 411 if (!wl->pub->up) { 412 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); 413 kfree_skb(skb); 414 goto done; 415 } 416 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) 417 tx_info->rate_driver_data[0] = control->sta; 418 done: 419 spin_unlock_bh(&wl->lock); 420 } 421 422 static int brcms_ops_start(struct ieee80211_hw *hw) 423 { 424 struct brcms_info *wl = hw->priv; 425 bool blocked; 426 int err; 427 428 if (!wl->ucode.bcm43xx_bomminor) { 429 err = brcms_request_fw(wl, wl->wlc->hw->d11core); 430 if (err) 431 return -ENOENT; 432 } 433 434 ieee80211_wake_queues(hw); 435 spin_lock_bh(&wl->lock); 436 blocked = brcms_rfkill_set_hw_state(wl); 437 spin_unlock_bh(&wl->lock); 438 if (!blocked) 439 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 440 441 spin_lock_bh(&wl->lock); 442 /* avoid acknowledging frames before a non-monitor device is added */ 443 wl->mute_tx = true; 444 445 if (!wl->pub->up) 446 if (!blocked) 447 err = brcms_up(wl); 448 else 449 err = -ERFKILL; 450 else 451 err = -ENODEV; 452 spin_unlock_bh(&wl->lock); 453 454 if (err != 0) 455 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", 456 __func__, err); 457 458 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); 459 return err; 460 } 461 462 static void brcms_ops_stop(struct ieee80211_hw *hw) 463 { 464 struct brcms_info *wl = hw->priv; 465 int status; 466 467 ieee80211_stop_queues(hw); 468 469 if (wl->wlc == NULL) 470 return; 471 472 spin_lock_bh(&wl->lock); 473 status = brcms_c_chipmatch(wl->wlc->hw->d11core); 474 spin_unlock_bh(&wl->lock); 475 if (!status) { 476 brcms_err(wl->wlc->hw->d11core, 477 "wl: brcms_ops_stop: chipmatch failed\n"); 478 return; 479 } 480 481 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); 482 483 /* put driver in down state */ 484 spin_lock_bh(&wl->lock); 485 brcms_down(wl); 486 spin_unlock_bh(&wl->lock); 487 } 488 489 static int 490 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 491 { 492 struct brcms_info *wl = hw->priv; 493 494 /* Just STA, AP and ADHOC for now */ 495 if (vif->type != NL80211_IFTYPE_STATION && 496 vif->type != NL80211_IFTYPE_AP && 497 vif->type != NL80211_IFTYPE_ADHOC) { 498 brcms_err(wl->wlc->hw->d11core, 499 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", 500 __func__, vif->type); 501 return -EOPNOTSUPP; 502 } 503 504 spin_lock_bh(&wl->lock); 505 wl->wlc->vif = vif; 506 wl->mute_tx = false; 507 brcms_c_mute(wl->wlc, false); 508 if (vif->type == NL80211_IFTYPE_STATION) 509 brcms_c_start_station(wl->wlc, vif->addr); 510 else if (vif->type == NL80211_IFTYPE_AP) 511 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, 512 vif->bss_conf.ssid, vif->bss_conf.ssid_len); 513 else if (vif->type == NL80211_IFTYPE_ADHOC) 514 brcms_c_start_adhoc(wl->wlc, vif->addr); 515 spin_unlock_bh(&wl->lock); 516 517 return 0; 518 } 519 520 static void 521 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 522 { 523 struct brcms_info *wl = hw->priv; 524 525 spin_lock_bh(&wl->lock); 526 wl->wlc->vif = NULL; 527 spin_unlock_bh(&wl->lock); 528 } 529 530 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed) 531 { 532 struct ieee80211_conf *conf = &hw->conf; 533 struct brcms_info *wl = hw->priv; 534 struct bcma_device *core = wl->wlc->hw->d11core; 535 int err = 0; 536 int new_int; 537 538 spin_lock_bh(&wl->lock); 539 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { 540 brcms_c_set_beacon_listen_interval(wl->wlc, 541 conf->listen_interval); 542 } 543 if (changed & IEEE80211_CONF_CHANGE_MONITOR) 544 brcms_dbg_info(core, "%s: change monitor mode: %s\n", 545 __func__, conf->flags & IEEE80211_CONF_MONITOR ? 546 "true" : "false"); 547 if (changed & IEEE80211_CONF_CHANGE_PS) 548 brcms_err(core, "%s: change power-save mode: %s (implement)\n", 549 __func__, conf->flags & IEEE80211_CONF_PS ? 550 "true" : "false"); 551 552 if (changed & IEEE80211_CONF_CHANGE_POWER) { 553 err = brcms_c_set_tx_power(wl->wlc, conf->power_level); 554 if (err < 0) { 555 brcms_err(core, "%s: Error setting power_level\n", 556 __func__); 557 goto config_out; 558 } 559 new_int = brcms_c_get_tx_power(wl->wlc); 560 if (new_int != conf->power_level) 561 brcms_err(core, 562 "%s: Power level req != actual, %d %d\n", 563 __func__, conf->power_level, 564 new_int); 565 } 566 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 567 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 || 568 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 569 err = brcms_c_set_channel(wl->wlc, 570 conf->chandef.chan->hw_value); 571 else 572 err = -ENOTSUPP; 573 } 574 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) 575 err = brcms_c_set_rate_limit(wl->wlc, 576 conf->short_frame_max_tx_count, 577 conf->long_frame_max_tx_count); 578 579 config_out: 580 spin_unlock_bh(&wl->lock); 581 return err; 582 } 583 584 static void 585 brcms_ops_bss_info_changed(struct ieee80211_hw *hw, 586 struct ieee80211_vif *vif, 587 struct ieee80211_bss_conf *info, u32 changed) 588 { 589 struct brcms_info *wl = hw->priv; 590 struct bcma_device *core = wl->wlc->hw->d11core; 591 592 if (changed & BSS_CHANGED_ASSOC) { 593 /* association status changed (associated/disassociated) 594 * also implies a change in the AID. 595 */ 596 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME, 597 __func__, info->assoc ? "" : "dis"); 598 spin_lock_bh(&wl->lock); 599 brcms_c_associate_upd(wl->wlc, info->assoc); 600 spin_unlock_bh(&wl->lock); 601 } 602 if (changed & BSS_CHANGED_ERP_SLOT) { 603 s8 val; 604 605 /* slot timing changed */ 606 if (info->use_short_slot) 607 val = 1; 608 else 609 val = 0; 610 spin_lock_bh(&wl->lock); 611 brcms_c_set_shortslot_override(wl->wlc, val); 612 spin_unlock_bh(&wl->lock); 613 } 614 615 if (changed & BSS_CHANGED_HT) { 616 /* 802.11n parameters changed */ 617 u16 mode = info->ht_operation_mode; 618 619 spin_lock_bh(&wl->lock); 620 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG, 621 mode & IEEE80211_HT_OP_MODE_PROTECTION); 622 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF, 623 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); 624 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS, 625 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); 626 spin_unlock_bh(&wl->lock); 627 } 628 if (changed & BSS_CHANGED_BASIC_RATES) { 629 struct ieee80211_supported_band *bi; 630 u32 br_mask, i; 631 u16 rate; 632 struct brcm_rateset rs; 633 int error; 634 635 /* retrieve the current rates */ 636 spin_lock_bh(&wl->lock); 637 brcms_c_get_current_rateset(wl->wlc, &rs); 638 spin_unlock_bh(&wl->lock); 639 640 br_mask = info->basic_rates; 641 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)]; 642 for (i = 0; i < bi->n_bitrates; i++) { 643 /* convert to internal rate value */ 644 rate = (bi->bitrates[i].bitrate << 1) / 10; 645 646 /* set/clear basic rate flag */ 647 brcms_set_basic_rate(&rs, rate, br_mask & 1); 648 br_mask >>= 1; 649 } 650 651 /* update the rate set */ 652 spin_lock_bh(&wl->lock); 653 error = brcms_c_set_rateset(wl->wlc, &rs); 654 spin_unlock_bh(&wl->lock); 655 if (error) 656 brcms_err(core, "changing basic rates failed: %d\n", 657 error); 658 } 659 if (changed & BSS_CHANGED_BEACON_INT) { 660 /* Beacon interval changed */ 661 spin_lock_bh(&wl->lock); 662 brcms_c_set_beacon_period(wl->wlc, info->beacon_int); 663 spin_unlock_bh(&wl->lock); 664 } 665 if (changed & BSS_CHANGED_BSSID) { 666 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 667 spin_lock_bh(&wl->lock); 668 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); 669 spin_unlock_bh(&wl->lock); 670 } 671 if (changed & BSS_CHANGED_SSID) { 672 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 673 spin_lock_bh(&wl->lock); 674 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len); 675 spin_unlock_bh(&wl->lock); 676 } 677 if (changed & BSS_CHANGED_BEACON) { 678 /* Beacon data changed, retrieve new beacon (beaconing modes) */ 679 struct sk_buff *beacon; 680 u16 tim_offset = 0; 681 682 spin_lock_bh(&wl->lock); 683 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL); 684 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 685 info->dtim_period); 686 spin_unlock_bh(&wl->lock); 687 } 688 689 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 690 struct sk_buff *probe_resp; 691 692 spin_lock_bh(&wl->lock); 693 probe_resp = ieee80211_proberesp_get(hw, vif); 694 brcms_c_set_new_probe_resp(wl->wlc, probe_resp); 695 spin_unlock_bh(&wl->lock); 696 } 697 698 if (changed & BSS_CHANGED_BEACON_ENABLED) { 699 /* Beaconing should be enabled/disabled (beaconing modes) */ 700 brcms_err(core, "%s: Beacon enabled: %s\n", __func__, 701 info->enable_beacon ? "true" : "false"); 702 if (info->enable_beacon && 703 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) { 704 brcms_c_enable_probe_resp(wl->wlc, true); 705 } else { 706 brcms_c_enable_probe_resp(wl->wlc, false); 707 } 708 } 709 710 if (changed & BSS_CHANGED_CQM) { 711 /* Connection quality monitor config changed */ 712 brcms_err(core, "%s: cqm change: threshold %d, hys %d " 713 " (implement)\n", __func__, info->cqm_rssi_thold, 714 info->cqm_rssi_hyst); 715 } 716 717 if (changed & BSS_CHANGED_IBSS) { 718 /* IBSS join status changed */ 719 brcms_err(core, "%s: IBSS joined: %s (implement)\n", 720 __func__, info->ibss_joined ? "true" : "false"); 721 } 722 723 if (changed & BSS_CHANGED_ARP_FILTER) { 724 /* Hardware ARP filter address list or state changed */ 725 brcms_err(core, "%s: arp filtering: %d addresses" 726 " (implement)\n", __func__, info->arp_addr_cnt); 727 } 728 729 if (changed & BSS_CHANGED_QOS) { 730 /* 731 * QoS for this association was enabled/disabled. 732 * Note that it is only ever disabled for station mode. 733 */ 734 brcms_err(core, "%s: qos enabled: %s (implement)\n", 735 __func__, info->qos ? "true" : "false"); 736 } 737 return; 738 } 739 740 static void 741 brcms_ops_configure_filter(struct ieee80211_hw *hw, 742 unsigned int changed_flags, 743 unsigned int *total_flags, u64 multicast) 744 { 745 struct brcms_info *wl = hw->priv; 746 struct bcma_device *core = wl->wlc->hw->d11core; 747 748 changed_flags &= MAC_FILTERS; 749 *total_flags &= MAC_FILTERS; 750 751 if (changed_flags & FIF_ALLMULTI) 752 brcms_dbg_info(core, "FIF_ALLMULTI\n"); 753 if (changed_flags & FIF_FCSFAIL) 754 brcms_dbg_info(core, "FIF_FCSFAIL\n"); 755 if (changed_flags & FIF_CONTROL) 756 brcms_dbg_info(core, "FIF_CONTROL\n"); 757 if (changed_flags & FIF_OTHER_BSS) 758 brcms_dbg_info(core, "FIF_OTHER_BSS\n"); 759 if (changed_flags & FIF_PSPOLL) 760 brcms_dbg_info(core, "FIF_PSPOLL\n"); 761 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) 762 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n"); 763 764 spin_lock_bh(&wl->lock); 765 brcms_c_mac_promisc(wl->wlc, *total_flags); 766 spin_unlock_bh(&wl->lock); 767 return; 768 } 769 770 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw, 771 struct ieee80211_vif *vif, 772 const u8 *mac_addr) 773 { 774 struct brcms_info *wl = hw->priv; 775 spin_lock_bh(&wl->lock); 776 brcms_c_scan_start(wl->wlc); 777 spin_unlock_bh(&wl->lock); 778 return; 779 } 780 781 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw, 782 struct ieee80211_vif *vif) 783 { 784 struct brcms_info *wl = hw->priv; 785 spin_lock_bh(&wl->lock); 786 brcms_c_scan_stop(wl->wlc); 787 spin_unlock_bh(&wl->lock); 788 return; 789 } 790 791 static int 792 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, 793 const struct ieee80211_tx_queue_params *params) 794 { 795 struct brcms_info *wl = hw->priv; 796 797 spin_lock_bh(&wl->lock); 798 brcms_c_wme_setparams(wl->wlc, queue, params, true); 799 spin_unlock_bh(&wl->lock); 800 801 return 0; 802 } 803 804 static int 805 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 806 struct ieee80211_sta *sta) 807 { 808 struct brcms_info *wl = hw->priv; 809 struct scb *scb = &wl->wlc->pri_scb; 810 811 brcms_c_init_scb(scb); 812 813 wl->pub->global_ampdu = &(scb->scb_ampdu); 814 wl->pub->global_ampdu->scb = scb; 815 wl->pub->global_ampdu->max_pdu = 16; 816 817 /* 818 * minstrel_ht initiates addBA on our behalf by calling 819 * ieee80211_start_tx_ba_session() 820 */ 821 return 0; 822 } 823 824 static int 825 brcms_ops_ampdu_action(struct ieee80211_hw *hw, 826 struct ieee80211_vif *vif, 827 struct ieee80211_ampdu_params *params) 828 { 829 struct brcms_info *wl = hw->priv; 830 struct scb *scb = &wl->wlc->pri_scb; 831 int status; 832 struct ieee80211_sta *sta = params->sta; 833 enum ieee80211_ampdu_mlme_action action = params->action; 834 u16 tid = params->tid; 835 u8 buf_size = params->buf_size; 836 837 if (WARN_ON(scb->magic != SCB_MAGIC)) 838 return -EIDRM; 839 switch (action) { 840 case IEEE80211_AMPDU_RX_START: 841 break; 842 case IEEE80211_AMPDU_RX_STOP: 843 break; 844 case IEEE80211_AMPDU_TX_START: 845 spin_lock_bh(&wl->lock); 846 status = brcms_c_aggregatable(wl->wlc, tid); 847 spin_unlock_bh(&wl->lock); 848 if (!status) { 849 brcms_dbg_ht(wl->wlc->hw->d11core, 850 "START: tid %d is not agg\'able\n", tid); 851 return -EINVAL; 852 } 853 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 854 break; 855 856 case IEEE80211_AMPDU_TX_STOP_CONT: 857 case IEEE80211_AMPDU_TX_STOP_FLUSH: 858 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 859 spin_lock_bh(&wl->lock); 860 brcms_c_ampdu_flush(wl->wlc, sta, tid); 861 spin_unlock_bh(&wl->lock); 862 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 863 break; 864 case IEEE80211_AMPDU_TX_OPERATIONAL: 865 /* 866 * BA window size from ADDBA response ('buf_size') defines how 867 * many outstanding MPDUs are allowed for the BA stream by 868 * recipient and traffic class. 'ampdu_factor' gives maximum 869 * AMPDU size. 870 */ 871 spin_lock_bh(&wl->lock); 872 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size, 873 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + 874 sta->ht_cap.ampdu_factor)) - 1); 875 spin_unlock_bh(&wl->lock); 876 /* Power save wakeup */ 877 break; 878 default: 879 brcms_err(wl->wlc->hw->d11core, 880 "%s: Invalid command, ignoring\n", __func__); 881 } 882 883 return 0; 884 } 885 886 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw) 887 { 888 struct brcms_info *wl = hw->priv; 889 bool blocked; 890 891 spin_lock_bh(&wl->lock); 892 blocked = brcms_c_check_radio_disabled(wl->wlc); 893 spin_unlock_bh(&wl->lock); 894 895 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 896 } 897 898 static bool brcms_tx_flush_completed(struct brcms_info *wl) 899 { 900 bool result; 901 902 spin_lock_bh(&wl->lock); 903 result = brcms_c_tx_flush_completed(wl->wlc); 904 spin_unlock_bh(&wl->lock); 905 return result; 906 } 907 908 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 909 u32 queues, bool drop) 910 { 911 struct brcms_info *wl = hw->priv; 912 int ret; 913 914 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false"); 915 916 ret = wait_event_timeout(wl->tx_flush_wq, 917 brcms_tx_flush_completed(wl), 918 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT)); 919 920 brcms_dbg_mac80211(wl->wlc->hw->d11core, 921 "ret=%d\n", jiffies_to_msecs(ret)); 922 } 923 924 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 925 { 926 struct brcms_info *wl = hw->priv; 927 u64 tsf; 928 929 spin_lock_bh(&wl->lock); 930 tsf = brcms_c_tsf_get(wl->wlc); 931 spin_unlock_bh(&wl->lock); 932 933 return tsf; 934 } 935 936 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, 937 struct ieee80211_vif *vif, u64 tsf) 938 { 939 struct brcms_info *wl = hw->priv; 940 941 spin_lock_bh(&wl->lock); 942 brcms_c_tsf_set(wl->wlc, tsf); 943 spin_unlock_bh(&wl->lock); 944 } 945 946 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw, 947 struct ieee80211_sta *sta, bool set) 948 { 949 struct brcms_info *wl = hw->priv; 950 struct sk_buff *beacon = NULL; 951 u16 tim_offset = 0; 952 953 spin_lock_bh(&wl->lock); 954 if (wl->wlc->vif) 955 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif, 956 &tim_offset, NULL); 957 if (beacon) 958 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 959 wl->wlc->vif->bss_conf.dtim_period); 960 spin_unlock_bh(&wl->lock); 961 962 return 0; 963 } 964 965 static const struct ieee80211_ops brcms_ops = { 966 .tx = brcms_ops_tx, 967 .start = brcms_ops_start, 968 .stop = brcms_ops_stop, 969 .add_interface = brcms_ops_add_interface, 970 .remove_interface = brcms_ops_remove_interface, 971 .config = brcms_ops_config, 972 .bss_info_changed = brcms_ops_bss_info_changed, 973 .configure_filter = brcms_ops_configure_filter, 974 .sw_scan_start = brcms_ops_sw_scan_start, 975 .sw_scan_complete = brcms_ops_sw_scan_complete, 976 .conf_tx = brcms_ops_conf_tx, 977 .sta_add = brcms_ops_sta_add, 978 .ampdu_action = brcms_ops_ampdu_action, 979 .rfkill_poll = brcms_ops_rfkill_poll, 980 .flush = brcms_ops_flush, 981 .get_tsf = brcms_ops_get_tsf, 982 .set_tsf = brcms_ops_set_tsf, 983 .set_tim = brcms_ops_beacon_set_tim, 984 }; 985 986 void brcms_dpc(unsigned long data) 987 { 988 struct brcms_info *wl; 989 990 wl = (struct brcms_info *) data; 991 992 spin_lock_bh(&wl->lock); 993 994 /* call the common second level interrupt handler */ 995 if (wl->pub->up) { 996 if (wl->resched) { 997 unsigned long flags; 998 999 spin_lock_irqsave(&wl->isr_lock, flags); 1000 brcms_c_intrsupd(wl->wlc); 1001 spin_unlock_irqrestore(&wl->isr_lock, flags); 1002 } 1003 1004 wl->resched = brcms_c_dpc(wl->wlc, true); 1005 } 1006 1007 /* brcms_c_dpc() may bring the driver down */ 1008 if (!wl->pub->up) 1009 goto done; 1010 1011 /* re-schedule dpc */ 1012 if (wl->resched) 1013 tasklet_schedule(&wl->tasklet); 1014 else 1015 /* re-enable interrupts */ 1016 brcms_intrson(wl); 1017 1018 done: 1019 spin_unlock_bh(&wl->lock); 1020 wake_up(&wl->tx_flush_wq); 1021 } 1022 1023 static irqreturn_t brcms_isr(int irq, void *dev_id) 1024 { 1025 struct brcms_info *wl; 1026 irqreturn_t ret = IRQ_NONE; 1027 1028 wl = (struct brcms_info *) dev_id; 1029 1030 spin_lock(&wl->isr_lock); 1031 1032 /* call common first level interrupt handler */ 1033 if (brcms_c_isr(wl->wlc)) { 1034 /* schedule second level handler */ 1035 tasklet_schedule(&wl->tasklet); 1036 ret = IRQ_HANDLED; 1037 } 1038 1039 spin_unlock(&wl->isr_lock); 1040 1041 return ret; 1042 } 1043 1044 /* 1045 * is called in brcms_pci_probe() context, therefore no locking required. 1046 */ 1047 static int ieee_hw_rate_init(struct ieee80211_hw *hw) 1048 { 1049 struct brcms_info *wl = hw->priv; 1050 struct brcms_c_info *wlc = wl->wlc; 1051 struct ieee80211_supported_band *band; 1052 int has_5g = 0; 1053 u16 phy_type; 1054 1055 hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; 1056 hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; 1057 1058 phy_type = brcms_c_get_phy_type(wl->wlc, 0); 1059 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1060 band = &wlc->bandstate[BAND_2G_INDEX]->band; 1061 *band = brcms_band_2GHz_nphy_template; 1062 if (phy_type == PHY_TYPE_LCN) { 1063 /* Single stream */ 1064 band->ht_cap.mcs.rx_mask[1] = 0; 1065 band->ht_cap.mcs.rx_highest = cpu_to_le16(72); 1066 } 1067 hw->wiphy->bands[NL80211_BAND_2GHZ] = band; 1068 } else { 1069 return -EPERM; 1070 } 1071 1072 /* Assume all bands use the same phy. True for 11n devices. */ 1073 if (wl->pub->_nbands > 1) { 1074 has_5g++; 1075 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1076 band = &wlc->bandstate[BAND_5G_INDEX]->band; 1077 *band = brcms_band_5GHz_nphy_template; 1078 hw->wiphy->bands[NL80211_BAND_5GHZ] = band; 1079 } else { 1080 return -EPERM; 1081 } 1082 } 1083 return 0; 1084 } 1085 1086 /* 1087 * is called in brcms_pci_probe() context, therefore no locking required. 1088 */ 1089 static int ieee_hw_init(struct ieee80211_hw *hw) 1090 { 1091 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 1092 ieee80211_hw_set(hw, SIGNAL_DBM); 1093 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 1094 1095 hw->extra_tx_headroom = brcms_c_get_header_len(); 1096 hw->queues = N_TX_QUEUES; 1097 hw->max_rates = 2; /* Primary rate and 1 fallback rate */ 1098 1099 /* channel change time is dependent on chip and band */ 1100 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1101 BIT(NL80211_IFTYPE_AP) | 1102 BIT(NL80211_IFTYPE_ADHOC); 1103 1104 /* 1105 * deactivate sending probe responses by ucude, because this will 1106 * cause problems when WPS is used. 1107 * 1108 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 1109 */ 1110 1111 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1112 1113 hw->rate_control_algorithm = "minstrel_ht"; 1114 1115 hw->sta_data_size = 0; 1116 return ieee_hw_rate_init(hw); 1117 } 1118 1119 /** 1120 * attach to the WL device. 1121 * 1122 * Attach to the WL device identified by vendor and device parameters. 1123 * regs is a host accessible memory address pointing to WL device registers. 1124 * 1125 * is called in brcms_bcma_probe() context, therefore no locking required. 1126 */ 1127 static struct brcms_info *brcms_attach(struct bcma_device *pdev) 1128 { 1129 struct brcms_info *wl = NULL; 1130 int unit, err; 1131 struct ieee80211_hw *hw; 1132 u8 perm[ETH_ALEN]; 1133 1134 unit = n_adapters_found; 1135 err = 0; 1136 1137 if (unit < 0) 1138 return NULL; 1139 1140 /* allocate private info */ 1141 hw = bcma_get_drvdata(pdev); 1142 if (hw != NULL) 1143 wl = hw->priv; 1144 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) 1145 return NULL; 1146 wl->wiphy = hw->wiphy; 1147 1148 atomic_set(&wl->callbacks, 0); 1149 1150 init_waitqueue_head(&wl->tx_flush_wq); 1151 1152 /* setup the bottom half handler */ 1153 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl); 1154 1155 spin_lock_init(&wl->lock); 1156 spin_lock_init(&wl->isr_lock); 1157 1158 /* common load-time initialization */ 1159 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); 1160 if (!wl->wlc) { 1161 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", 1162 KBUILD_MODNAME, err); 1163 goto fail; 1164 } 1165 wl->pub = brcms_c_pub(wl->wlc); 1166 1167 wl->pub->ieee_hw = hw; 1168 1169 /* register our interrupt handler */ 1170 if (request_irq(pdev->irq, brcms_isr, 1171 IRQF_SHARED, KBUILD_MODNAME, wl)) { 1172 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); 1173 goto fail; 1174 } 1175 wl->irq = pdev->irq; 1176 1177 /* register module */ 1178 brcms_c_module_register(wl->pub, "linux", wl, NULL); 1179 1180 if (ieee_hw_init(hw)) { 1181 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, 1182 __func__); 1183 goto fail; 1184 } 1185 1186 brcms_c_regd_init(wl->wlc); 1187 1188 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); 1189 if (WARN_ON(!is_valid_ether_addr(perm))) 1190 goto fail; 1191 SET_IEEE80211_PERM_ADDR(hw, perm); 1192 1193 err = ieee80211_register_hw(hw); 1194 if (err) 1195 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" 1196 "%d\n", __func__, err); 1197 1198 if (wl->pub->srom_ccode[0] && 1199 regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) 1200 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); 1201 1202 brcms_debugfs_attach(wl->pub); 1203 brcms_debugfs_create_files(wl->pub); 1204 n_adapters_found++; 1205 return wl; 1206 1207 fail: 1208 brcms_free(wl); 1209 return NULL; 1210 } 1211 1212 1213 1214 /** 1215 * determines if a device is a WL device, and if so, attaches it. 1216 * 1217 * This function determines if a device pointed to by pdev is a WL device, 1218 * and if so, performs a brcms_attach() on it. 1219 * 1220 * Perimeter lock is initialized in the course of this function. 1221 */ 1222 static int brcms_bcma_probe(struct bcma_device *pdev) 1223 { 1224 struct brcms_info *wl; 1225 struct ieee80211_hw *hw; 1226 1227 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", 1228 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, 1229 pdev->irq); 1230 1231 if ((pdev->id.manuf != BCMA_MANUF_BCM) || 1232 (pdev->id.id != BCMA_CORE_80211)) 1233 return -ENODEV; 1234 1235 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); 1236 if (!hw) { 1237 pr_err("%s: ieee80211_alloc_hw failed\n", __func__); 1238 return -ENOMEM; 1239 } 1240 1241 SET_IEEE80211_DEV(hw, &pdev->dev); 1242 1243 bcma_set_drvdata(pdev, hw); 1244 1245 memset(hw->priv, 0, sizeof(*wl)); 1246 1247 wl = brcms_attach(pdev); 1248 if (!wl) { 1249 pr_err("%s: brcms_attach failed!\n", __func__); 1250 return -ENODEV; 1251 } 1252 brcms_led_register(wl); 1253 1254 return 0; 1255 } 1256 1257 static int brcms_suspend(struct bcma_device *pdev) 1258 { 1259 struct brcms_info *wl; 1260 struct ieee80211_hw *hw; 1261 1262 hw = bcma_get_drvdata(pdev); 1263 wl = hw->priv; 1264 if (!wl) { 1265 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, 1266 __func__); 1267 return -ENODEV; 1268 } 1269 1270 /* only need to flag hw is down for proper resume */ 1271 spin_lock_bh(&wl->lock); 1272 wl->pub->hw_up = false; 1273 spin_unlock_bh(&wl->lock); 1274 1275 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); 1276 1277 return 0; 1278 } 1279 1280 static int brcms_resume(struct bcma_device *pdev) 1281 { 1282 return 0; 1283 } 1284 1285 static struct bcma_driver brcms_bcma_driver = { 1286 .name = KBUILD_MODNAME, 1287 .probe = brcms_bcma_probe, 1288 .suspend = brcms_suspend, 1289 .resume = brcms_resume, 1290 .remove = brcms_remove, 1291 .id_table = brcms_coreid_table, 1292 }; 1293 1294 /** 1295 * This is the main entry point for the brcmsmac driver. 1296 * 1297 * This function is scheduled upon module initialization and 1298 * does the driver registration, which result in brcms_bcma_probe() 1299 * call resulting in the driver bringup. 1300 */ 1301 static void brcms_driver_init(struct work_struct *work) 1302 { 1303 int error; 1304 1305 error = bcma_driver_register(&brcms_bcma_driver); 1306 if (error) 1307 pr_err("%s: register returned %d\n", __func__, error); 1308 } 1309 1310 static DECLARE_WORK(brcms_driver_work, brcms_driver_init); 1311 1312 static int __init brcms_module_init(void) 1313 { 1314 brcms_debugfs_init(); 1315 if (!schedule_work(&brcms_driver_work)) 1316 return -EBUSY; 1317 1318 return 0; 1319 } 1320 1321 /** 1322 * This function unloads the brcmsmac driver from the system. 1323 * 1324 * This function unconditionally unloads the brcmsmac driver module from the 1325 * system. 1326 * 1327 */ 1328 static void __exit brcms_module_exit(void) 1329 { 1330 cancel_work_sync(&brcms_driver_work); 1331 bcma_driver_unregister(&brcms_bcma_driver); 1332 brcms_debugfs_exit(); 1333 } 1334 1335 module_init(brcms_module_init); 1336 module_exit(brcms_module_exit); 1337 1338 /* 1339 * precondition: perimeter lock has been acquired 1340 */ 1341 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, 1342 bool state, int prio) 1343 { 1344 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); 1345 } 1346 1347 /* 1348 * precondition: perimeter lock has been acquired 1349 */ 1350 void brcms_init(struct brcms_info *wl) 1351 { 1352 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", 1353 wl->pub->unit); 1354 brcms_reset(wl); 1355 brcms_c_init(wl->wlc, wl->mute_tx); 1356 } 1357 1358 /* 1359 * precondition: perimeter lock has been acquired 1360 */ 1361 uint brcms_reset(struct brcms_info *wl) 1362 { 1363 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); 1364 brcms_c_reset(wl->wlc); 1365 1366 /* dpc will not be rescheduled */ 1367 wl->resched = false; 1368 1369 /* inform publicly that interface is down */ 1370 wl->pub->up = false; 1371 1372 return 0; 1373 } 1374 1375 void brcms_fatal_error(struct brcms_info *wl) 1376 { 1377 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", 1378 wl->wlc->pub->unit); 1379 brcms_reset(wl); 1380 ieee80211_restart_hw(wl->pub->ieee_hw); 1381 } 1382 1383 /* 1384 * These are interrupt on/off entry points. Disable interrupts 1385 * during interrupt state transition. 1386 */ 1387 void brcms_intrson(struct brcms_info *wl) 1388 { 1389 unsigned long flags; 1390 1391 spin_lock_irqsave(&wl->isr_lock, flags); 1392 brcms_c_intrson(wl->wlc); 1393 spin_unlock_irqrestore(&wl->isr_lock, flags); 1394 } 1395 1396 u32 brcms_intrsoff(struct brcms_info *wl) 1397 { 1398 unsigned long flags; 1399 u32 status; 1400 1401 spin_lock_irqsave(&wl->isr_lock, flags); 1402 status = brcms_c_intrsoff(wl->wlc); 1403 spin_unlock_irqrestore(&wl->isr_lock, flags); 1404 return status; 1405 } 1406 1407 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) 1408 { 1409 unsigned long flags; 1410 1411 spin_lock_irqsave(&wl->isr_lock, flags); 1412 brcms_c_intrsrestore(wl->wlc, macintmask); 1413 spin_unlock_irqrestore(&wl->isr_lock, flags); 1414 } 1415 1416 /* 1417 * precondition: perimeter lock has been acquired 1418 */ 1419 int brcms_up(struct brcms_info *wl) 1420 { 1421 int error = 0; 1422 1423 if (wl->pub->up) 1424 return 0; 1425 1426 error = brcms_c_up(wl->wlc); 1427 1428 return error; 1429 } 1430 1431 /* 1432 * precondition: perimeter lock has been acquired 1433 */ 1434 void brcms_down(struct brcms_info *wl) 1435 { 1436 uint callbacks, ret_val = 0; 1437 1438 /* call common down function */ 1439 ret_val = brcms_c_down(wl->wlc); 1440 callbacks = atomic_read(&wl->callbacks) - ret_val; 1441 1442 /* wait for down callbacks to complete */ 1443 spin_unlock_bh(&wl->lock); 1444 1445 /* For HIGH_only driver, it's important to actually schedule other work, 1446 * not just spin wait since everything runs at schedule level 1447 */ 1448 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); 1449 1450 spin_lock_bh(&wl->lock); 1451 } 1452 1453 /* 1454 * precondition: perimeter lock is not acquired 1455 */ 1456 static void _brcms_timer(struct work_struct *work) 1457 { 1458 struct brcms_timer *t = container_of(work, struct brcms_timer, 1459 dly_wrk.work); 1460 1461 spin_lock_bh(&t->wl->lock); 1462 1463 if (t->set) { 1464 if (t->periodic) { 1465 atomic_inc(&t->wl->callbacks); 1466 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, 1467 &t->dly_wrk, 1468 msecs_to_jiffies(t->ms)); 1469 } else { 1470 t->set = false; 1471 } 1472 1473 t->fn(t->arg); 1474 } 1475 1476 atomic_dec(&t->wl->callbacks); 1477 1478 spin_unlock_bh(&t->wl->lock); 1479 } 1480 1481 /* 1482 * Adds a timer to the list. Caller supplies a timer function. 1483 * Is called from wlc. 1484 * 1485 * precondition: perimeter lock has been acquired 1486 */ 1487 struct brcms_timer *brcms_init_timer(struct brcms_info *wl, 1488 void (*fn) (void *arg), 1489 void *arg, const char *name) 1490 { 1491 struct brcms_timer *t; 1492 1493 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC); 1494 if (!t) 1495 return NULL; 1496 1497 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); 1498 t->wl = wl; 1499 t->fn = fn; 1500 t->arg = arg; 1501 t->next = wl->timers; 1502 wl->timers = t; 1503 1504 #ifdef DEBUG 1505 t->name = kstrdup(name, GFP_ATOMIC); 1506 #endif 1507 1508 return t; 1509 } 1510 1511 /* 1512 * adds only the kernel timer since it's going to be more accurate 1513 * as well as it's easier to make it periodic 1514 * 1515 * precondition: perimeter lock has been acquired 1516 */ 1517 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) 1518 { 1519 struct ieee80211_hw *hw = t->wl->pub->ieee_hw; 1520 1521 #ifdef DEBUG 1522 if (t->set) 1523 brcms_dbg_info(t->wl->wlc->hw->d11core, 1524 "%s: Already set. Name: %s, per %d\n", 1525 __func__, t->name, periodic); 1526 #endif 1527 t->ms = ms; 1528 t->periodic = (bool) periodic; 1529 if (!t->set) { 1530 t->set = true; 1531 atomic_inc(&t->wl->callbacks); 1532 } 1533 1534 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); 1535 } 1536 1537 /* 1538 * return true if timer successfully deleted, false if still pending 1539 * 1540 * precondition: perimeter lock has been acquired 1541 */ 1542 bool brcms_del_timer(struct brcms_timer *t) 1543 { 1544 if (t->set) { 1545 t->set = false; 1546 if (!cancel_delayed_work(&t->dly_wrk)) 1547 return false; 1548 1549 atomic_dec(&t->wl->callbacks); 1550 } 1551 1552 return true; 1553 } 1554 1555 /* 1556 * precondition: perimeter lock has been acquired 1557 */ 1558 void brcms_free_timer(struct brcms_timer *t) 1559 { 1560 struct brcms_info *wl = t->wl; 1561 struct brcms_timer *tmp; 1562 1563 /* delete the timer in case it is active */ 1564 brcms_del_timer(t); 1565 1566 if (wl->timers == t) { 1567 wl->timers = wl->timers->next; 1568 #ifdef DEBUG 1569 kfree(t->name); 1570 #endif 1571 kfree(t); 1572 return; 1573 1574 } 1575 1576 tmp = wl->timers; 1577 while (tmp) { 1578 if (tmp->next == t) { 1579 tmp->next = t->next; 1580 #ifdef DEBUG 1581 kfree(t->name); 1582 #endif 1583 kfree(t); 1584 return; 1585 } 1586 tmp = tmp->next; 1587 } 1588 1589 } 1590 1591 /* 1592 * precondition: no locking required 1593 */ 1594 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) 1595 { 1596 int i, entry; 1597 const u8 *pdata; 1598 struct firmware_hdr *hdr; 1599 for (i = 0; i < wl->fw.fw_cnt; i++) { 1600 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1601 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1602 entry++, hdr++) { 1603 u32 len = le32_to_cpu(hdr->len); 1604 if (le32_to_cpu(hdr->idx) == idx) { 1605 pdata = wl->fw.fw_bin[i]->data + 1606 le32_to_cpu(hdr->offset); 1607 *pbuf = kvmalloc(len, GFP_KERNEL); 1608 if (*pbuf == NULL) 1609 goto fail; 1610 memcpy(*pbuf, pdata, len); 1611 return 0; 1612 } 1613 } 1614 } 1615 brcms_err(wl->wlc->hw->d11core, 1616 "ERROR: ucode buf tag:%d can not be found!\n", idx); 1617 *pbuf = NULL; 1618 fail: 1619 return -ENODATA; 1620 } 1621 1622 /* 1623 * Precondition: Since this function is called in brcms_bcma_probe() context, 1624 * no locking is required. 1625 */ 1626 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) 1627 { 1628 int i, entry; 1629 const u8 *pdata; 1630 struct firmware_hdr *hdr; 1631 for (i = 0; i < wl->fw.fw_cnt; i++) { 1632 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1633 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1634 entry++, hdr++) { 1635 if (le32_to_cpu(hdr->idx) == idx) { 1636 pdata = wl->fw.fw_bin[i]->data + 1637 le32_to_cpu(hdr->offset); 1638 if (le32_to_cpu(hdr->len) != 4) { 1639 brcms_err(wl->wlc->hw->d11core, 1640 "ERROR: fw hdr len\n"); 1641 return -ENOMSG; 1642 } 1643 *n_bytes = le32_to_cpu(*((__le32 *) pdata)); 1644 return 0; 1645 } 1646 } 1647 } 1648 brcms_err(wl->wlc->hw->d11core, 1649 "ERROR: ucode tag:%d can not be found!\n", idx); 1650 return -ENOMSG; 1651 } 1652 1653 /* 1654 * precondition: can both be called locked and unlocked 1655 */ 1656 void brcms_ucode_free_buf(void *p) 1657 { 1658 kvfree(p); 1659 } 1660 1661 /* 1662 * checks validity of all firmware images loaded from user space 1663 * 1664 * Precondition: Since this function is called in brcms_bcma_probe() context, 1665 * no locking is required. 1666 */ 1667 int brcms_check_firmwares(struct brcms_info *wl) 1668 { 1669 int i; 1670 int entry; 1671 int rc = 0; 1672 const struct firmware *fw; 1673 const struct firmware *fw_hdr; 1674 struct firmware_hdr *ucode_hdr; 1675 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) { 1676 fw = wl->fw.fw_bin[i]; 1677 fw_hdr = wl->fw.fw_hdr[i]; 1678 if (fw == NULL && fw_hdr == NULL) { 1679 break; 1680 } else if (fw == NULL || fw_hdr == NULL) { 1681 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", 1682 __func__); 1683 rc = -EBADF; 1684 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) { 1685 wiphy_err(wl->wiphy, "%s: non integral fw hdr file " 1686 "size %zu/%zu\n", __func__, fw_hdr->size, 1687 sizeof(struct firmware_hdr)); 1688 rc = -EBADF; 1689 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { 1690 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n", 1691 __func__, fw->size); 1692 rc = -EBADF; 1693 } else { 1694 /* check if ucode section overruns firmware image */ 1695 ucode_hdr = (struct firmware_hdr *)fw_hdr->data; 1696 for (entry = 0; entry < wl->fw.hdr_num_entries[i] && 1697 !rc; entry++, ucode_hdr++) { 1698 if (le32_to_cpu(ucode_hdr->offset) + 1699 le32_to_cpu(ucode_hdr->len) > 1700 fw->size) { 1701 wiphy_err(wl->wiphy, 1702 "%s: conflicting bin/hdr\n", 1703 __func__); 1704 rc = -EBADF; 1705 } 1706 } 1707 } 1708 } 1709 if (rc == 0 && wl->fw.fw_cnt != i) { 1710 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, 1711 wl->fw.fw_cnt); 1712 rc = -EBADF; 1713 } 1714 return rc; 1715 } 1716 1717 /* 1718 * precondition: perimeter lock has been acquired 1719 */ 1720 bool brcms_rfkill_set_hw_state(struct brcms_info *wl) 1721 { 1722 bool blocked = brcms_c_check_radio_disabled(wl->wlc); 1723 1724 spin_unlock_bh(&wl->lock); 1725 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 1726 if (blocked) 1727 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); 1728 spin_lock_bh(&wl->lock); 1729 return blocked; 1730 } 1731