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 <linux/string_choices.h> 28 #include <net/mac80211.h> 29 #include <defs.h> 30 #include "phy/phy_int.h" 31 #include "d11.h" 32 #include "channel.h" 33 #include "scb.h" 34 #include "pub.h" 35 #include "ucode_loader.h" 36 #include "mac80211_if.h" 37 #include "main.h" 38 #include "debug.h" 39 #include "led.h" 40 41 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */ 42 #define BRCMS_FLUSH_TIMEOUT 500 /* msec */ 43 44 /* Flags we support */ 45 #define MAC_FILTERS (FIF_ALLMULTI | \ 46 FIF_FCSFAIL | \ 47 FIF_CONTROL | \ 48 FIF_OTHER_BSS | \ 49 FIF_BCN_PRBRESP_PROMISC | \ 50 FIF_PSPOLL) 51 52 #define CHAN2GHZ(channel, frequency, chflags) { \ 53 .band = NL80211_BAND_2GHZ, \ 54 .center_freq = (frequency), \ 55 .hw_value = (channel), \ 56 .flags = chflags, \ 57 .max_antenna_gain = 0, \ 58 .max_power = 19, \ 59 } 60 61 #define CHAN5GHZ(channel, chflags) { \ 62 .band = NL80211_BAND_5GHZ, \ 63 .center_freq = 5000 + 5*(channel), \ 64 .hw_value = (channel), \ 65 .flags = chflags, \ 66 .max_antenna_gain = 0, \ 67 .max_power = 21, \ 68 } 69 70 #define RATE(rate100m, _flags) { \ 71 .bitrate = (rate100m), \ 72 .flags = (_flags), \ 73 .hw_value = (rate100m / 5), \ 74 } 75 76 struct firmware_hdr { 77 __le32 offset; 78 __le32 len; 79 __le32 idx; 80 }; 81 82 static const char * const brcms_firmwares[MAX_FW_IMAGES] = { 83 "brcm/bcm43xx", 84 NULL 85 }; 86 87 static int n_adapters_found; 88 89 MODULE_AUTHOR("Broadcom Corporation"); 90 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); 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 static void brcms_free(struct brcms_info *wl) 287 { 288 struct brcms_timer *t, *next; 289 290 /* free ucode data */ 291 if (wl->fw.fw_cnt) 292 brcms_ucode_data_free(&wl->ucode); 293 if (wl->irq) 294 free_irq(wl->irq, wl); 295 296 /* kill dpc */ 297 tasklet_kill(&wl->tasklet); 298 299 if (wl->pub) { 300 brcms_debugfs_detach(wl->pub); 301 brcms_c_module_unregister(wl->pub, "linux", wl); 302 } 303 304 /* free common resources */ 305 if (wl->wlc) { 306 brcms_c_detach(wl->wlc); 307 wl->wlc = NULL; 308 wl->pub = NULL; 309 } 310 311 /* virtual interface deletion is deferred so we cannot spinwait */ 312 313 /* wait for all pending callbacks to complete */ 314 while (atomic_read(&wl->callbacks) > 0) 315 schedule(); 316 317 /* free timers */ 318 for (t = wl->timers; t; t = next) { 319 next = t->next; 320 #ifdef DEBUG 321 kfree(t->name); 322 #endif 323 kfree(t); 324 } 325 } 326 327 /* 328 * called from both kernel as from this kernel module (error flow on attach) 329 * precondition: perimeter lock is not acquired. 330 */ 331 static void brcms_remove(struct bcma_device *pdev) 332 { 333 struct ieee80211_hw *hw = bcma_get_drvdata(pdev); 334 struct brcms_info *wl = hw->priv; 335 336 if (wl->wlc) { 337 brcms_led_unregister(wl); 338 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); 339 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 340 ieee80211_unregister_hw(hw); 341 } 342 343 brcms_free(wl); 344 345 bcma_set_drvdata(pdev, NULL); 346 ieee80211_free_hw(hw); 347 } 348 349 /* 350 * Precondition: Since this function is called in brcms_pci_probe() context, 351 * no locking is required. 352 */ 353 static void brcms_release_fw(struct brcms_info *wl) 354 { 355 int i; 356 for (i = 0; i < MAX_FW_IMAGES; i++) { 357 release_firmware(wl->fw.fw_bin[i]); 358 release_firmware(wl->fw.fw_hdr[i]); 359 } 360 } 361 362 /* 363 * Precondition: Since this function is called in brcms_pci_probe() context, 364 * no locking is required. 365 */ 366 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) 367 { 368 int status; 369 struct device *device = &pdev->dev; 370 char fw_name[100]; 371 int i; 372 373 memset(&wl->fw, 0, sizeof(struct brcms_firmware)); 374 for (i = 0; i < MAX_FW_IMAGES; i++) { 375 if (brcms_firmwares[i] == NULL) 376 break; 377 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], 378 UCODE_LOADER_API_VER); 379 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); 380 if (status) { 381 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 382 KBUILD_MODNAME, fw_name); 383 return status; 384 } 385 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], 386 UCODE_LOADER_API_VER); 387 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); 388 if (status) { 389 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 390 KBUILD_MODNAME, fw_name); 391 return status; 392 } 393 wl->fw.hdr_num_entries[i] = 394 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); 395 } 396 wl->fw.fw_cnt = i; 397 status = brcms_ucode_data_init(wl, &wl->ucode); 398 brcms_release_fw(wl); 399 return status; 400 } 401 402 static void brcms_ops_tx(struct ieee80211_hw *hw, 403 struct ieee80211_tx_control *control, 404 struct sk_buff *skb) 405 { 406 struct brcms_info *wl = hw->priv; 407 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 408 409 spin_lock_bh(&wl->lock); 410 if (!wl->pub->up) { 411 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); 412 kfree_skb(skb); 413 goto done; 414 } 415 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) 416 tx_info->rate_driver_data[0] = control->sta; 417 done: 418 spin_unlock_bh(&wl->lock); 419 } 420 421 static int brcms_ops_start(struct ieee80211_hw *hw) 422 { 423 struct brcms_info *wl = hw->priv; 424 bool blocked; 425 int err; 426 427 if (!wl->ucode.bcm43xx_bomminor) { 428 err = brcms_request_fw(wl, wl->wlc->hw->d11core); 429 if (err) 430 return -ENOENT; 431 } 432 433 ieee80211_wake_queues(hw); 434 spin_lock_bh(&wl->lock); 435 blocked = brcms_rfkill_set_hw_state(wl); 436 spin_unlock_bh(&wl->lock); 437 if (!blocked) 438 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 439 440 spin_lock_bh(&wl->lock); 441 /* avoid acknowledging frames before a non-monitor device is added */ 442 wl->mute_tx = true; 443 444 if (!wl->pub->up) 445 if (!blocked) 446 err = brcms_up(wl); 447 else 448 err = -ERFKILL; 449 else 450 err = -ENODEV; 451 spin_unlock_bh(&wl->lock); 452 453 if (err != 0) 454 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", 455 __func__, err); 456 457 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); 458 return err; 459 } 460 461 static void brcms_ops_stop(struct ieee80211_hw *hw, bool suspend) 462 { 463 struct brcms_info *wl = hw->priv; 464 int status; 465 466 ieee80211_stop_queues(hw); 467 468 if (wl->wlc == NULL) 469 return; 470 471 spin_lock_bh(&wl->lock); 472 status = brcms_c_chipmatch(wl->wlc->hw->d11core); 473 spin_unlock_bh(&wl->lock); 474 if (!status) { 475 brcms_err(wl->wlc->hw->d11core, 476 "wl: brcms_ops_stop: chipmatch failed\n"); 477 return; 478 } 479 480 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); 481 482 /* put driver in down state */ 483 spin_lock_bh(&wl->lock); 484 brcms_down(wl); 485 spin_unlock_bh(&wl->lock); 486 } 487 488 static int 489 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 490 { 491 struct brcms_info *wl = hw->priv; 492 493 /* Just STA, AP and ADHOC for now */ 494 if (vif->type != NL80211_IFTYPE_STATION && 495 vif->type != NL80211_IFTYPE_AP && 496 vif->type != NL80211_IFTYPE_ADHOC) { 497 brcms_err(wl->wlc->hw->d11core, 498 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", 499 __func__, vif->type); 500 return -EOPNOTSUPP; 501 } 502 503 spin_lock_bh(&wl->lock); 504 wl->wlc->vif = vif; 505 wl->mute_tx = false; 506 brcms_c_mute(wl->wlc, false); 507 if (vif->type == NL80211_IFTYPE_STATION) 508 brcms_c_start_station(wl->wlc, vif->addr); 509 else if (vif->type == NL80211_IFTYPE_AP) 510 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, 511 vif->cfg.ssid, vif->cfg.ssid_len); 512 else if (vif->type == NL80211_IFTYPE_ADHOC) 513 brcms_c_start_adhoc(wl->wlc, vif->addr); 514 spin_unlock_bh(&wl->lock); 515 516 return 0; 517 } 518 519 static void 520 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 521 { 522 struct brcms_info *wl = hw->priv; 523 524 spin_lock_bh(&wl->lock); 525 wl->wlc->vif = NULL; 526 spin_unlock_bh(&wl->lock); 527 } 528 529 static int brcms_ops_config(struct ieee80211_hw *hw, int radio_idx, 530 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", __func__, 545 str_true_false(conf->flags & 546 IEEE80211_CONF_MONITOR)); 547 if (changed & IEEE80211_CONF_CHANGE_PS) 548 brcms_err(core, "%s: change power-save mode: %s (implement)\n", 549 __func__, 550 str_true_false(conf->flags & IEEE80211_CONF_PS)); 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, u64 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__, vif->cfg.assoc ? "" : "dis"); 598 spin_lock_bh(&wl->lock); 599 brcms_c_associate_upd(wl->wlc, vif->cfg.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, vif->cfg.ssid, vif->cfg.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, 0); 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 str_true_false(info->enable_beacon)); 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__, str_true_false(vif->cfg.ibss_joined)); 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__, vif->cfg.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__, str_true_false(info->qos)); 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, 793 unsigned int link_id, u16 queue, 794 const struct ieee80211_tx_queue_params *params) 795 { 796 struct brcms_info *wl = hw->priv; 797 798 spin_lock_bh(&wl->lock); 799 brcms_c_wme_setparams(wl->wlc, queue, params, true); 800 spin_unlock_bh(&wl->lock); 801 802 return 0; 803 } 804 805 static int 806 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 807 struct ieee80211_sta *sta) 808 { 809 struct brcms_info *wl = hw->priv; 810 struct scb *scb = &wl->wlc->pri_scb; 811 812 brcms_c_init_scb(scb); 813 814 wl->pub->global_ampdu = &(scb->scb_ampdu); 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; 835 836 if (WARN_ON(scb->magic != SCB_MAGIC)) 837 return -EIDRM; 838 switch (action) { 839 case IEEE80211_AMPDU_RX_START: 840 break; 841 case IEEE80211_AMPDU_RX_STOP: 842 break; 843 case IEEE80211_AMPDU_TX_START: 844 spin_lock_bh(&wl->lock); 845 status = brcms_c_aggregatable(wl->wlc, tid); 846 spin_unlock_bh(&wl->lock); 847 if (!status) { 848 brcms_dbg_ht(wl->wlc->hw->d11core, 849 "START: tid %d is not agg\'able\n", tid); 850 return -EINVAL; 851 } 852 return IEEE80211_AMPDU_TX_START_IMMEDIATE; 853 854 case IEEE80211_AMPDU_TX_STOP_CONT: 855 case IEEE80211_AMPDU_TX_STOP_FLUSH: 856 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 857 spin_lock_bh(&wl->lock); 858 brcms_c_ampdu_flush(wl->wlc, sta, tid); 859 spin_unlock_bh(&wl->lock); 860 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 861 break; 862 case IEEE80211_AMPDU_TX_OPERATIONAL: 863 /* 864 * BA window size from ADDBA response ('buf_size') defines how 865 * many outstanding MPDUs are allowed for the BA stream by 866 * recipient and traffic class (this is actually unused by the 867 * rest of the driver). 'ampdu_factor' gives maximum AMPDU size. 868 */ 869 spin_lock_bh(&wl->lock); 870 brcms_c_ampdu_tx_operational(wl->wlc, tid, 871 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + 872 sta->deflink.ht_cap.ampdu_factor)) - 1); 873 spin_unlock_bh(&wl->lock); 874 /* Power save wakeup */ 875 break; 876 default: 877 brcms_err(wl->wlc->hw->d11core, 878 "%s: Invalid command, ignoring\n", __func__); 879 } 880 881 return 0; 882 } 883 884 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw) 885 { 886 struct brcms_info *wl = hw->priv; 887 bool blocked; 888 889 spin_lock_bh(&wl->lock); 890 blocked = brcms_c_check_radio_disabled(wl->wlc); 891 spin_unlock_bh(&wl->lock); 892 893 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 894 } 895 896 static bool brcms_tx_flush_completed(struct brcms_info *wl) 897 { 898 bool result; 899 900 spin_lock_bh(&wl->lock); 901 result = brcms_c_tx_flush_completed(wl->wlc); 902 spin_unlock_bh(&wl->lock); 903 return result; 904 } 905 906 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 907 u32 queues, bool drop) 908 { 909 struct brcms_info *wl = hw->priv; 910 int ret; 911 912 no_printk("%s: drop = %s\n", __func__, str_true_false(drop)); 913 914 ret = wait_event_timeout(wl->tx_flush_wq, 915 brcms_tx_flush_completed(wl), 916 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT)); 917 918 brcms_dbg_mac80211(wl->wlc->hw->d11core, 919 "ret=%d\n", jiffies_to_msecs(ret)); 920 } 921 922 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 923 { 924 struct brcms_info *wl = hw->priv; 925 u64 tsf; 926 927 spin_lock_bh(&wl->lock); 928 tsf = brcms_c_tsf_get(wl->wlc); 929 spin_unlock_bh(&wl->lock); 930 931 return tsf; 932 } 933 934 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, 935 struct ieee80211_vif *vif, u64 tsf) 936 { 937 struct brcms_info *wl = hw->priv; 938 939 spin_lock_bh(&wl->lock); 940 brcms_c_tsf_set(wl->wlc, tsf); 941 spin_unlock_bh(&wl->lock); 942 } 943 944 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw, 945 struct ieee80211_sta *sta, bool set) 946 { 947 struct brcms_info *wl = hw->priv; 948 struct sk_buff *beacon = NULL; 949 u16 tim_offset = 0; 950 951 spin_lock_bh(&wl->lock); 952 if (wl->wlc->vif) 953 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif, 954 &tim_offset, NULL, 0); 955 if (beacon) 956 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 957 wl->wlc->vif->bss_conf.dtim_period); 958 spin_unlock_bh(&wl->lock); 959 960 return 0; 961 } 962 963 static const struct ieee80211_ops brcms_ops = { 964 .add_chanctx = ieee80211_emulate_add_chanctx, 965 .remove_chanctx = ieee80211_emulate_remove_chanctx, 966 .change_chanctx = ieee80211_emulate_change_chanctx, 967 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 968 .tx = brcms_ops_tx, 969 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 970 .start = brcms_ops_start, 971 .stop = brcms_ops_stop, 972 .add_interface = brcms_ops_add_interface, 973 .remove_interface = brcms_ops_remove_interface, 974 .config = brcms_ops_config, 975 .bss_info_changed = brcms_ops_bss_info_changed, 976 .configure_filter = brcms_ops_configure_filter, 977 .sw_scan_start = brcms_ops_sw_scan_start, 978 .sw_scan_complete = brcms_ops_sw_scan_complete, 979 .conf_tx = brcms_ops_conf_tx, 980 .sta_add = brcms_ops_sta_add, 981 .ampdu_action = brcms_ops_ampdu_action, 982 .rfkill_poll = brcms_ops_rfkill_poll, 983 .flush = brcms_ops_flush, 984 .get_tsf = brcms_ops_get_tsf, 985 .set_tsf = brcms_ops_set_tsf, 986 .set_tim = brcms_ops_beacon_set_tim, 987 }; 988 989 void brcms_dpc(struct tasklet_struct *t) 990 { 991 struct brcms_info *wl; 992 993 wl = from_tasklet(wl, t, tasklet); 994 995 spin_lock_bh(&wl->lock); 996 997 /* call the common second level interrupt handler */ 998 if (wl->pub->up) { 999 if (wl->resched) { 1000 unsigned long flags; 1001 1002 spin_lock_irqsave(&wl->isr_lock, flags); 1003 brcms_c_intrsupd(wl->wlc); 1004 spin_unlock_irqrestore(&wl->isr_lock, flags); 1005 } 1006 1007 wl->resched = brcms_c_dpc(wl->wlc, true); 1008 } 1009 1010 /* brcms_c_dpc() may bring the driver down */ 1011 if (!wl->pub->up) 1012 goto done; 1013 1014 /* re-schedule dpc */ 1015 if (wl->resched) 1016 tasklet_schedule(&wl->tasklet); 1017 else 1018 /* re-enable interrupts */ 1019 brcms_intrson(wl); 1020 1021 done: 1022 spin_unlock_bh(&wl->lock); 1023 wake_up(&wl->tx_flush_wq); 1024 } 1025 1026 static irqreturn_t brcms_isr(int irq, void *dev_id) 1027 { 1028 struct brcms_info *wl; 1029 irqreturn_t ret = IRQ_NONE; 1030 1031 wl = (struct brcms_info *) dev_id; 1032 1033 spin_lock(&wl->isr_lock); 1034 1035 /* call common first level interrupt handler */ 1036 if (brcms_c_isr(wl->wlc)) { 1037 /* schedule second level handler */ 1038 tasklet_schedule(&wl->tasklet); 1039 ret = IRQ_HANDLED; 1040 } 1041 1042 spin_unlock(&wl->isr_lock); 1043 1044 return ret; 1045 } 1046 1047 /* 1048 * is called in brcms_pci_probe() context, therefore no locking required. 1049 */ 1050 static int ieee_hw_rate_init(struct ieee80211_hw *hw) 1051 { 1052 struct brcms_info *wl = hw->priv; 1053 struct brcms_c_info *wlc = wl->wlc; 1054 struct ieee80211_supported_band *band; 1055 u16 phy_type; 1056 1057 hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; 1058 hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; 1059 1060 phy_type = brcms_c_get_phy_type(wl->wlc, 0); 1061 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1062 band = &wlc->bandstate[BAND_2G_INDEX]->band; 1063 *band = brcms_band_2GHz_nphy_template; 1064 if (phy_type == PHY_TYPE_LCN) { 1065 /* Single stream */ 1066 band->ht_cap.mcs.rx_mask[1] = 0; 1067 band->ht_cap.mcs.rx_highest = cpu_to_le16(72); 1068 } 1069 hw->wiphy->bands[NL80211_BAND_2GHZ] = band; 1070 } else { 1071 return -EPERM; 1072 } 1073 1074 /* Assume all bands use the same phy. True for 11n devices. */ 1075 if (wl->pub->_nbands > 1) { 1076 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1077 band = &wlc->bandstate[BAND_5G_INDEX]->band; 1078 *band = brcms_band_5GHz_nphy_template; 1079 hw->wiphy->bands[NL80211_BAND_5GHZ] = band; 1080 } else { 1081 return -EPERM; 1082 } 1083 } 1084 return 0; 1085 } 1086 1087 /* 1088 * is called in brcms_pci_probe() context, therefore no locking required. 1089 */ 1090 static int ieee_hw_init(struct ieee80211_hw *hw) 1091 { 1092 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 1093 ieee80211_hw_set(hw, SIGNAL_DBM); 1094 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 1095 ieee80211_hw_set(hw, MFP_CAPABLE); 1096 1097 hw->extra_tx_headroom = brcms_c_get_header_len(); 1098 hw->queues = N_TX_QUEUES; 1099 hw->max_rates = 2; /* Primary rate and 1 fallback rate */ 1100 1101 /* channel change time is dependent on chip and band */ 1102 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1103 BIT(NL80211_IFTYPE_AP) | 1104 BIT(NL80211_IFTYPE_ADHOC); 1105 1106 /* 1107 * deactivate sending probe responses by ucude, because this will 1108 * cause problems when WPS is used. 1109 * 1110 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 1111 */ 1112 1113 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1114 1115 hw->rate_control_algorithm = "minstrel_ht"; 1116 1117 hw->sta_data_size = 0; 1118 return ieee_hw_rate_init(hw); 1119 } 1120 1121 /* 1122 * attach to the WL device. 1123 * 1124 * Attach to the WL device identified by vendor and device parameters. 1125 * regs is a host accessible memory address pointing to WL device registers. 1126 * 1127 * is called in brcms_bcma_probe() context, therefore no locking required. 1128 */ 1129 static struct brcms_info *brcms_attach(struct bcma_device *pdev) 1130 { 1131 struct brcms_info *wl = NULL; 1132 int unit, err; 1133 struct ieee80211_hw *hw; 1134 u8 perm[ETH_ALEN]; 1135 1136 unit = n_adapters_found; 1137 err = 0; 1138 1139 if (unit < 0) 1140 return NULL; 1141 1142 /* allocate private info */ 1143 hw = bcma_get_drvdata(pdev); 1144 if (hw != NULL) 1145 wl = hw->priv; 1146 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) 1147 return NULL; 1148 wl->wiphy = hw->wiphy; 1149 1150 atomic_set(&wl->callbacks, 0); 1151 1152 init_waitqueue_head(&wl->tx_flush_wq); 1153 1154 /* setup the bottom half handler */ 1155 tasklet_setup(&wl->tasklet, brcms_dpc); 1156 1157 spin_lock_init(&wl->lock); 1158 spin_lock_init(&wl->isr_lock); 1159 1160 /* common load-time initialization */ 1161 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); 1162 if (!wl->wlc) { 1163 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", 1164 KBUILD_MODNAME, err); 1165 goto fail; 1166 } 1167 wl->pub = brcms_c_pub(wl->wlc); 1168 1169 wl->pub->ieee_hw = hw; 1170 1171 /* register our interrupt handler */ 1172 if (request_irq(pdev->irq, brcms_isr, 1173 IRQF_SHARED, KBUILD_MODNAME, wl)) { 1174 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); 1175 goto fail; 1176 } 1177 wl->irq = pdev->irq; 1178 1179 /* register module */ 1180 brcms_c_module_register(wl->pub, "linux", wl, NULL); 1181 1182 if (ieee_hw_init(hw)) { 1183 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, 1184 __func__); 1185 goto fail; 1186 } 1187 1188 brcms_c_regd_init(wl->wlc); 1189 1190 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); 1191 if (WARN_ON(!is_valid_ether_addr(perm))) 1192 goto fail; 1193 SET_IEEE80211_PERM_ADDR(hw, perm); 1194 1195 err = ieee80211_register_hw(hw); 1196 if (err) 1197 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" 1198 "%d\n", __func__, err); 1199 1200 if (wl->pub->srom_ccode[0] && 1201 regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) 1202 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); 1203 1204 brcms_debugfs_attach(wl->pub); 1205 brcms_debugfs_create_files(wl->pub); 1206 n_adapters_found++; 1207 return wl; 1208 1209 fail: 1210 brcms_free(wl); 1211 return NULL; 1212 } 1213 1214 1215 1216 /* 1217 * determines if a device is a WL device, and if so, attaches it. 1218 * 1219 * This function determines if a device pointed to by pdev is a WL device, 1220 * and if so, performs a brcms_attach() on it. 1221 * 1222 * Perimeter lock is initialized in the course of this function. 1223 */ 1224 static int brcms_bcma_probe(struct bcma_device *pdev) 1225 { 1226 struct brcms_info *wl; 1227 struct ieee80211_hw *hw; 1228 int ret; 1229 1230 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", 1231 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, 1232 pdev->irq); 1233 1234 if ((pdev->id.manuf != BCMA_MANUF_BCM) || 1235 (pdev->id.id != BCMA_CORE_80211)) 1236 return -ENODEV; 1237 1238 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); 1239 if (!hw) { 1240 pr_err("%s: ieee80211_alloc_hw failed\n", __func__); 1241 return -ENOMEM; 1242 } 1243 1244 SET_IEEE80211_DEV(hw, &pdev->dev); 1245 1246 bcma_set_drvdata(pdev, hw); 1247 1248 memset(hw->priv, 0, sizeof(*wl)); 1249 1250 wl = brcms_attach(pdev); 1251 if (!wl) { 1252 pr_err("%s: brcms_attach failed!\n", __func__); 1253 ret = -ENODEV; 1254 goto err_free_ieee80211; 1255 } 1256 brcms_led_register(wl); 1257 1258 return 0; 1259 1260 err_free_ieee80211: 1261 ieee80211_free_hw(hw); 1262 return ret; 1263 } 1264 1265 static int brcms_suspend(struct bcma_device *pdev) 1266 { 1267 struct brcms_info *wl; 1268 struct ieee80211_hw *hw; 1269 1270 hw = bcma_get_drvdata(pdev); 1271 wl = hw->priv; 1272 if (!wl) { 1273 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, 1274 __func__); 1275 return -ENODEV; 1276 } 1277 1278 /* only need to flag hw is down for proper resume */ 1279 spin_lock_bh(&wl->lock); 1280 wl->pub->hw_up = false; 1281 spin_unlock_bh(&wl->lock); 1282 1283 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); 1284 1285 return 0; 1286 } 1287 1288 static int brcms_resume(struct bcma_device *pdev) 1289 { 1290 return 0; 1291 } 1292 1293 static struct bcma_driver brcms_bcma_driver = { 1294 .name = KBUILD_MODNAME, 1295 .probe = brcms_bcma_probe, 1296 .suspend = brcms_suspend, 1297 .resume = brcms_resume, 1298 .remove = brcms_remove, 1299 .id_table = brcms_coreid_table, 1300 }; 1301 1302 /* 1303 * This is the main entry point for the brcmsmac driver. 1304 * 1305 * This function is scheduled upon module initialization and 1306 * does the driver registration, which result in brcms_bcma_probe() 1307 * call resulting in the driver bringup. 1308 */ 1309 static void brcms_driver_init(struct work_struct *work) 1310 { 1311 int error; 1312 1313 error = bcma_driver_register(&brcms_bcma_driver); 1314 if (error) 1315 pr_err("%s: register returned %d\n", __func__, error); 1316 } 1317 1318 static DECLARE_WORK(brcms_driver_work, brcms_driver_init); 1319 1320 static int __init brcms_module_init(void) 1321 { 1322 brcms_debugfs_init(); 1323 if (!schedule_work(&brcms_driver_work)) 1324 return -EBUSY; 1325 1326 return 0; 1327 } 1328 1329 /* 1330 * This function unloads the brcmsmac driver from the system. 1331 * 1332 * This function unconditionally unloads the brcmsmac driver module from the 1333 * system. 1334 * 1335 */ 1336 static void __exit brcms_module_exit(void) 1337 { 1338 cancel_work_sync(&brcms_driver_work); 1339 bcma_driver_unregister(&brcms_bcma_driver); 1340 brcms_debugfs_exit(); 1341 } 1342 1343 module_init(brcms_module_init); 1344 module_exit(brcms_module_exit); 1345 1346 /* 1347 * precondition: perimeter lock has been acquired 1348 */ 1349 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, 1350 bool state, int prio) 1351 { 1352 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); 1353 } 1354 1355 /* 1356 * precondition: perimeter lock has been acquired 1357 */ 1358 void brcms_init(struct brcms_info *wl) 1359 { 1360 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", 1361 wl->pub->unit); 1362 brcms_reset(wl); 1363 brcms_c_init(wl->wlc, wl->mute_tx); 1364 } 1365 1366 /* 1367 * precondition: perimeter lock has been acquired 1368 */ 1369 uint brcms_reset(struct brcms_info *wl) 1370 { 1371 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); 1372 brcms_c_reset(wl->wlc); 1373 1374 /* dpc will not be rescheduled */ 1375 wl->resched = false; 1376 1377 /* inform publicly that interface is down */ 1378 wl->pub->up = false; 1379 1380 return 0; 1381 } 1382 1383 void brcms_fatal_error(struct brcms_info *wl) 1384 { 1385 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", 1386 wl->wlc->pub->unit); 1387 brcms_reset(wl); 1388 ieee80211_restart_hw(wl->pub->ieee_hw); 1389 } 1390 1391 /* 1392 * These are interrupt on/off entry points. Disable interrupts 1393 * during interrupt state transition. 1394 */ 1395 void brcms_intrson(struct brcms_info *wl) 1396 { 1397 unsigned long flags; 1398 1399 spin_lock_irqsave(&wl->isr_lock, flags); 1400 brcms_c_intrson(wl->wlc); 1401 spin_unlock_irqrestore(&wl->isr_lock, flags); 1402 } 1403 1404 u32 brcms_intrsoff(struct brcms_info *wl) 1405 { 1406 unsigned long flags; 1407 u32 status; 1408 1409 spin_lock_irqsave(&wl->isr_lock, flags); 1410 status = brcms_c_intrsoff(wl->wlc); 1411 spin_unlock_irqrestore(&wl->isr_lock, flags); 1412 return status; 1413 } 1414 1415 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) 1416 { 1417 unsigned long flags; 1418 1419 spin_lock_irqsave(&wl->isr_lock, flags); 1420 brcms_c_intrsrestore(wl->wlc, macintmask); 1421 spin_unlock_irqrestore(&wl->isr_lock, flags); 1422 } 1423 1424 /* 1425 * precondition: perimeter lock has been acquired 1426 */ 1427 int brcms_up(struct brcms_info *wl) 1428 { 1429 int error = 0; 1430 1431 if (wl->pub->up) 1432 return 0; 1433 1434 error = brcms_c_up(wl->wlc); 1435 1436 return error; 1437 } 1438 1439 /* 1440 * precondition: perimeter lock has been acquired 1441 */ 1442 void brcms_down(struct brcms_info *wl) 1443 __must_hold(&wl->lock) 1444 { 1445 uint callbacks, ret_val = 0; 1446 1447 /* call common down function */ 1448 ret_val = brcms_c_down(wl->wlc); 1449 callbacks = atomic_read(&wl->callbacks) - ret_val; 1450 1451 /* wait for down callbacks to complete */ 1452 spin_unlock_bh(&wl->lock); 1453 1454 /* For HIGH_only driver, it's important to actually schedule other work, 1455 * not just spin wait since everything runs at schedule level 1456 */ 1457 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); 1458 1459 spin_lock_bh(&wl->lock); 1460 } 1461 1462 /* 1463 * precondition: perimeter lock is not acquired 1464 */ 1465 static void _brcms_timer(struct work_struct *work) 1466 { 1467 struct brcms_timer *t = container_of(work, struct brcms_timer, 1468 dly_wrk.work); 1469 1470 spin_lock_bh(&t->wl->lock); 1471 1472 if (t->set) { 1473 if (t->periodic) { 1474 atomic_inc(&t->wl->callbacks); 1475 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, 1476 &t->dly_wrk, 1477 msecs_to_jiffies(t->ms)); 1478 } else { 1479 t->set = false; 1480 } 1481 1482 t->fn(t->arg); 1483 } 1484 1485 atomic_dec(&t->wl->callbacks); 1486 1487 spin_unlock_bh(&t->wl->lock); 1488 } 1489 1490 /* 1491 * Adds a timer to the list. Caller supplies a timer function. 1492 * Is called from wlc. 1493 * 1494 * precondition: perimeter lock has been acquired 1495 */ 1496 struct brcms_timer *brcms_init_timer(struct brcms_info *wl, 1497 void (*fn) (void *arg), 1498 void *arg, const char *name) 1499 { 1500 struct brcms_timer *t; 1501 1502 t = kzalloc(sizeof(*t), GFP_ATOMIC); 1503 if (!t) 1504 return NULL; 1505 1506 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); 1507 t->wl = wl; 1508 t->fn = fn; 1509 t->arg = arg; 1510 t->next = wl->timers; 1511 wl->timers = t; 1512 1513 #ifdef DEBUG 1514 t->name = kstrdup(name, GFP_ATOMIC); 1515 #endif 1516 1517 return t; 1518 } 1519 1520 /* 1521 * adds only the kernel timer since it's going to be more accurate 1522 * as well as it's easier to make it periodic 1523 * 1524 * precondition: perimeter lock has been acquired 1525 */ 1526 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) 1527 { 1528 struct ieee80211_hw *hw = t->wl->pub->ieee_hw; 1529 1530 #ifdef DEBUG 1531 if (t->set) 1532 brcms_dbg_info(t->wl->wlc->hw->d11core, 1533 "%s: Already set. Name: %s, per %d\n", 1534 __func__, t->name, periodic); 1535 #endif 1536 t->ms = ms; 1537 t->periodic = (bool) periodic; 1538 if (!t->set) { 1539 t->set = true; 1540 atomic_inc(&t->wl->callbacks); 1541 } 1542 1543 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); 1544 } 1545 1546 /* 1547 * return true if timer successfully deleted, false if still pending 1548 * 1549 * precondition: perimeter lock has been acquired 1550 */ 1551 bool brcms_del_timer(struct brcms_timer *t) 1552 { 1553 if (t->set) { 1554 t->set = false; 1555 if (!cancel_delayed_work(&t->dly_wrk)) 1556 return false; 1557 1558 atomic_dec(&t->wl->callbacks); 1559 } 1560 1561 return true; 1562 } 1563 1564 /* 1565 * precondition: perimeter lock has been acquired 1566 */ 1567 void brcms_free_timer(struct brcms_timer *t) 1568 { 1569 struct brcms_info *wl = t->wl; 1570 struct brcms_timer *tmp; 1571 1572 /* delete the timer in case it is active */ 1573 brcms_del_timer(t); 1574 1575 if (wl->timers == t) { 1576 wl->timers = wl->timers->next; 1577 #ifdef DEBUG 1578 kfree(t->name); 1579 #endif 1580 kfree(t); 1581 return; 1582 1583 } 1584 1585 tmp = wl->timers; 1586 while (tmp) { 1587 if (tmp->next == t) { 1588 tmp->next = t->next; 1589 #ifdef DEBUG 1590 kfree(t->name); 1591 #endif 1592 kfree(t); 1593 return; 1594 } 1595 tmp = tmp->next; 1596 } 1597 1598 } 1599 1600 /* 1601 * precondition: no locking required 1602 */ 1603 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) 1604 { 1605 int i, entry; 1606 const u8 *pdata; 1607 struct firmware_hdr *hdr; 1608 for (i = 0; i < wl->fw.fw_cnt; i++) { 1609 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1610 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1611 entry++, hdr++) { 1612 u32 len = le32_to_cpu(hdr->len); 1613 if (le32_to_cpu(hdr->idx) == idx) { 1614 pdata = wl->fw.fw_bin[i]->data + 1615 le32_to_cpu(hdr->offset); 1616 *pbuf = kvmemdup(pdata, len, GFP_KERNEL); 1617 if (*pbuf == NULL) 1618 return -ENOMEM; 1619 return 0; 1620 } 1621 } 1622 } 1623 brcms_err(wl->wlc->hw->d11core, 1624 "ERROR: ucode buf tag:%d can not be found!\n", idx); 1625 *pbuf = NULL; 1626 return -ENODATA; 1627 } 1628 1629 /* 1630 * Precondition: Since this function is called in brcms_bcma_probe() context, 1631 * no locking is required. 1632 */ 1633 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) 1634 { 1635 int i, entry; 1636 const u8 *pdata; 1637 struct firmware_hdr *hdr; 1638 for (i = 0; i < wl->fw.fw_cnt; i++) { 1639 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1640 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1641 entry++, hdr++) { 1642 if (le32_to_cpu(hdr->idx) == idx) { 1643 pdata = wl->fw.fw_bin[i]->data + 1644 le32_to_cpu(hdr->offset); 1645 if (le32_to_cpu(hdr->len) != 4) { 1646 brcms_err(wl->wlc->hw->d11core, 1647 "ERROR: fw hdr len\n"); 1648 return -ENOMSG; 1649 } 1650 *n_bytes = le32_to_cpu(*((__le32 *) pdata)); 1651 return 0; 1652 } 1653 } 1654 } 1655 brcms_err(wl->wlc->hw->d11core, 1656 "ERROR: ucode tag:%d can not be found!\n", idx); 1657 return -ENOMSG; 1658 } 1659 1660 /* 1661 * precondition: can both be called locked and unlocked 1662 */ 1663 void brcms_ucode_free_buf(void *p) 1664 { 1665 kvfree(p); 1666 } 1667 1668 /* 1669 * checks validity of all firmware images loaded from user space 1670 * 1671 * Precondition: Since this function is called in brcms_bcma_probe() context, 1672 * no locking is required. 1673 */ 1674 int brcms_check_firmwares(struct brcms_info *wl) 1675 { 1676 int i; 1677 int entry; 1678 int rc = 0; 1679 const struct firmware *fw; 1680 const struct firmware *fw_hdr; 1681 struct firmware_hdr *ucode_hdr; 1682 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) { 1683 fw = wl->fw.fw_bin[i]; 1684 fw_hdr = wl->fw.fw_hdr[i]; 1685 if (fw == NULL && fw_hdr == NULL) { 1686 break; 1687 } else if (fw == NULL || fw_hdr == NULL) { 1688 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", 1689 __func__); 1690 rc = -EBADF; 1691 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) { 1692 wiphy_err(wl->wiphy, "%s: non integral fw hdr file " 1693 "size %zu/%zu\n", __func__, fw_hdr->size, 1694 sizeof(struct firmware_hdr)); 1695 rc = -EBADF; 1696 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { 1697 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n", 1698 __func__, fw->size); 1699 rc = -EBADF; 1700 } else { 1701 /* check if ucode section overruns firmware image */ 1702 ucode_hdr = (struct firmware_hdr *)fw_hdr->data; 1703 for (entry = 0; entry < wl->fw.hdr_num_entries[i] && 1704 !rc; entry++, ucode_hdr++) { 1705 if (le32_to_cpu(ucode_hdr->offset) + 1706 le32_to_cpu(ucode_hdr->len) > 1707 fw->size) { 1708 wiphy_err(wl->wiphy, 1709 "%s: conflicting bin/hdr\n", 1710 __func__); 1711 rc = -EBADF; 1712 } 1713 } 1714 } 1715 } 1716 if (rc == 0 && wl->fw.fw_cnt != i) { 1717 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, 1718 wl->fw.fw_cnt); 1719 rc = -EBADF; 1720 } 1721 return rc; 1722 } 1723 1724 /* 1725 * precondition: perimeter lock has been acquired 1726 */ 1727 bool brcms_rfkill_set_hw_state(struct brcms_info *wl) 1728 __must_hold(&wl->lock) 1729 { 1730 bool blocked = brcms_c_check_radio_disabled(wl->wlc); 1731 1732 spin_unlock_bh(&wl->lock); 1733 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 1734 if (blocked) 1735 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); 1736 spin_lock_bh(&wl->lock); 1737 return blocked; 1738 } 1739