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, frequency, chflags) { \ 52 .band = NL80211_BAND_2GHZ, \ 53 .center_freq = (frequency), \ 54 .hw_value = (channel), \ 55 .flags = chflags, \ 56 .max_antenna_gain = 0, \ 57 .max_power = 19, \ 58 } 59 60 #define CHAN5GHZ(channel, chflags) { \ 61 .band = NL80211_BAND_5GHZ, \ 62 .center_freq = 5000 + 5*(channel), \ 63 .hw_value = (channel), \ 64 .flags = chflags, \ 65 .max_antenna_gain = 0, \ 66 .max_power = 21, \ 67 } 68 69 #define RATE(rate100m, _flags) { \ 70 .bitrate = (rate100m), \ 71 .flags = (_flags), \ 72 .hw_value = (rate100m / 5), \ 73 } 74 75 struct firmware_hdr { 76 __le32 offset; 77 __le32 len; 78 __le32 idx; 79 }; 80 81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = { 82 "brcm/bcm43xx", 83 NULL 84 }; 85 86 static int n_adapters_found; 87 88 MODULE_AUTHOR("Broadcom Corporation"); 89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); 90 MODULE_LICENSE("Dual BSD/GPL"); 91 /* This needs to be adjusted when brcms_firmwares changes */ 92 MODULE_FIRMWARE("brcm/bcm43xx-0.fw"); 93 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw"); 94 95 /* recognized BCMA Core IDs */ 96 static struct bcma_device_id brcms_coreid_table[] = { 97 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS), 98 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS), 99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS), 100 {}, 101 }; 102 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); 103 104 #if defined(CONFIG_BRCMDBG) 105 /* 106 * Module parameter for setting the debug message level. Available 107 * flags are specified by the BRCM_DL_* macros in 108 * drivers/net/wireless/brcm80211/include/defs.h. 109 */ 110 module_param_named(debug, brcm_msg_level, uint, 0644); 111 #endif 112 113 static struct ieee80211_channel brcms_2ghz_chantable[] = { 114 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), 115 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), 116 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), 117 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), 118 CHAN2GHZ(5, 2432, 0), 119 CHAN2GHZ(6, 2437, 0), 120 CHAN2GHZ(7, 2442, 0), 121 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), 122 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), 123 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), 124 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), 125 CHAN2GHZ(12, 2467, 126 IEEE80211_CHAN_NO_IR | 127 IEEE80211_CHAN_NO_HT40PLUS), 128 CHAN2GHZ(13, 2472, 129 IEEE80211_CHAN_NO_IR | 130 IEEE80211_CHAN_NO_HT40PLUS), 131 CHAN2GHZ(14, 2484, 132 IEEE80211_CHAN_NO_IR | 133 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS | 134 IEEE80211_CHAN_NO_OFDM) 135 }; 136 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { 138 /* UNII-1 */ 139 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), 140 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), 141 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), 142 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), 143 /* UNII-2 */ 144 CHAN5GHZ(52, 145 IEEE80211_CHAN_RADAR | 146 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 147 CHAN5GHZ(56, 148 IEEE80211_CHAN_RADAR | 149 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 150 CHAN5GHZ(60, 151 IEEE80211_CHAN_RADAR | 152 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 153 CHAN5GHZ(64, 154 IEEE80211_CHAN_RADAR | 155 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 156 /* MID */ 157 CHAN5GHZ(100, 158 IEEE80211_CHAN_RADAR | 159 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 160 CHAN5GHZ(104, 161 IEEE80211_CHAN_RADAR | 162 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 163 CHAN5GHZ(108, 164 IEEE80211_CHAN_RADAR | 165 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 166 CHAN5GHZ(112, 167 IEEE80211_CHAN_RADAR | 168 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 169 CHAN5GHZ(116, 170 IEEE80211_CHAN_RADAR | 171 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 172 CHAN5GHZ(120, 173 IEEE80211_CHAN_RADAR | 174 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 175 CHAN5GHZ(124, 176 IEEE80211_CHAN_RADAR | 177 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 178 CHAN5GHZ(128, 179 IEEE80211_CHAN_RADAR | 180 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 181 CHAN5GHZ(132, 182 IEEE80211_CHAN_RADAR | 183 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 184 CHAN5GHZ(136, 185 IEEE80211_CHAN_RADAR | 186 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 187 CHAN5GHZ(140, 188 IEEE80211_CHAN_RADAR | 189 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS | 190 IEEE80211_CHAN_NO_HT40MINUS), 191 /* UNII-3 */ 192 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), 193 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), 194 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), 195 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), 196 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 197 }; 198 199 /* 200 * The rate table is used for both 2.4G and 5G rates. The 201 * latter being a subset as it does not support CCK rates. 202 */ 203 static struct ieee80211_rate legacy_ratetable[] = { 204 RATE(10, 0), 205 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), 206 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), 207 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), 208 RATE(60, 0), 209 RATE(90, 0), 210 RATE(120, 0), 211 RATE(180, 0), 212 RATE(240, 0), 213 RATE(360, 0), 214 RATE(480, 0), 215 RATE(540, 0), 216 }; 217 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = { 219 .band = NL80211_BAND_2GHZ, 220 .channels = brcms_2ghz_chantable, 221 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), 222 .bitrates = legacy_ratetable, 223 .n_bitrates = ARRAY_SIZE(legacy_ratetable), 224 .ht_cap = { 225 /* from include/linux/ieee80211.h */ 226 .cap = IEEE80211_HT_CAP_GRN_FLD | 227 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40, 228 .ht_supported = true, 229 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 230 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 231 .mcs = { 232 /* placeholders for now */ 233 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 234 .rx_highest = cpu_to_le16(500), 235 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 236 } 237 }; 238 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = { 240 .band = NL80211_BAND_5GHZ, 241 .channels = brcms_5ghz_nphy_chantable, 242 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), 243 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, 244 .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 245 BRCMS_LEGACY_5G_RATE_OFFSET, 246 .ht_cap = { 247 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | 248 IEEE80211_HT_CAP_SGI_40, 249 .ht_supported = true, 250 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 251 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 252 .mcs = { 253 /* placeholders for now */ 254 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 255 .rx_highest = cpu_to_le16(500), 256 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 257 } 258 }; 259 260 /* flags the given rate in rateset as requested */ 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) 262 { 263 u32 i; 264 265 for (i = 0; i < rs->count; i++) { 266 if (rate != (rs->rates[i] & 0x7f)) 267 continue; 268 269 if (is_br) 270 rs->rates[i] |= BRCMS_RATE_FLAG; 271 else 272 rs->rates[i] &= BRCMS_RATE_MASK; 273 return; 274 } 275 } 276 277 /* 278 * This function frees the WL per-device resources. 279 * 280 * This function frees resources owned by the WL device pointed to 281 * by the wl parameter. 282 * 283 * precondition: can both be called locked and unlocked 284 */ 285 static void brcms_free(struct brcms_info *wl) 286 { 287 struct brcms_timer *t, *next; 288 289 /* free ucode data */ 290 if (wl->fw.fw_cnt) 291 brcms_ucode_data_free(&wl->ucode); 292 if (wl->irq) 293 free_irq(wl->irq, wl); 294 295 /* kill dpc */ 296 tasklet_kill(&wl->tasklet); 297 298 if (wl->pub) { 299 brcms_debugfs_detach(wl->pub); 300 brcms_c_module_unregister(wl->pub, "linux", wl); 301 } 302 303 /* free common resources */ 304 if (wl->wlc) { 305 brcms_c_detach(wl->wlc); 306 wl->wlc = NULL; 307 wl->pub = NULL; 308 } 309 310 /* virtual interface deletion is deferred so we cannot spinwait */ 311 312 /* wait for all pending callbacks to complete */ 313 while (atomic_read(&wl->callbacks) > 0) 314 schedule(); 315 316 /* free timers */ 317 for (t = wl->timers; t; t = next) { 318 next = t->next; 319 #ifdef DEBUG 320 kfree(t->name); 321 #endif 322 kfree(t); 323 } 324 } 325 326 /* 327 * called from both kernel as from this kernel module (error flow on attach) 328 * precondition: perimeter lock is not acquired. 329 */ 330 static void brcms_remove(struct bcma_device *pdev) 331 { 332 struct ieee80211_hw *hw = bcma_get_drvdata(pdev); 333 struct brcms_info *wl = hw->priv; 334 335 if (wl->wlc) { 336 brcms_led_unregister(wl); 337 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); 338 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 339 ieee80211_unregister_hw(hw); 340 } 341 342 brcms_free(wl); 343 344 bcma_set_drvdata(pdev, NULL); 345 ieee80211_free_hw(hw); 346 } 347 348 /* 349 * Precondition: Since this function is called in brcms_pci_probe() context, 350 * no locking is required. 351 */ 352 static void brcms_release_fw(struct brcms_info *wl) 353 { 354 int i; 355 for (i = 0; i < MAX_FW_IMAGES; i++) { 356 release_firmware(wl->fw.fw_bin[i]); 357 release_firmware(wl->fw.fw_hdr[i]); 358 } 359 } 360 361 /* 362 * Precondition: Since this function is called in brcms_pci_probe() context, 363 * no locking is required. 364 */ 365 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) 366 { 367 int status; 368 struct device *device = &pdev->dev; 369 char fw_name[100]; 370 int i; 371 372 memset(&wl->fw, 0, sizeof(struct brcms_firmware)); 373 for (i = 0; i < MAX_FW_IMAGES; i++) { 374 if (brcms_firmwares[i] == NULL) 375 break; 376 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], 377 UCODE_LOADER_API_VER); 378 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); 379 if (status) { 380 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 381 KBUILD_MODNAME, fw_name); 382 return status; 383 } 384 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], 385 UCODE_LOADER_API_VER); 386 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); 387 if (status) { 388 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 389 KBUILD_MODNAME, fw_name); 390 return status; 391 } 392 wl->fw.hdr_num_entries[i] = 393 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); 394 } 395 wl->fw.fw_cnt = i; 396 status = brcms_ucode_data_init(wl, &wl->ucode); 397 brcms_release_fw(wl); 398 return status; 399 } 400 401 static void brcms_ops_tx(struct ieee80211_hw *hw, 402 struct ieee80211_tx_control *control, 403 struct sk_buff *skb) 404 { 405 struct brcms_info *wl = hw->priv; 406 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 407 408 spin_lock_bh(&wl->lock); 409 if (!wl->pub->up) { 410 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); 411 kfree_skb(skb); 412 goto done; 413 } 414 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) 415 tx_info->rate_driver_data[0] = control->sta; 416 done: 417 spin_unlock_bh(&wl->lock); 418 } 419 420 static int brcms_ops_start(struct ieee80211_hw *hw) 421 { 422 struct brcms_info *wl = hw->priv; 423 bool blocked; 424 int err; 425 426 if (!wl->ucode.bcm43xx_bomminor) { 427 err = brcms_request_fw(wl, wl->wlc->hw->d11core); 428 if (err) 429 return -ENOENT; 430 } 431 432 ieee80211_wake_queues(hw); 433 spin_lock_bh(&wl->lock); 434 blocked = brcms_rfkill_set_hw_state(wl); 435 spin_unlock_bh(&wl->lock); 436 if (!blocked) 437 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 438 439 spin_lock_bh(&wl->lock); 440 /* avoid acknowledging frames before a non-monitor device is added */ 441 wl->mute_tx = true; 442 443 if (!wl->pub->up) 444 if (!blocked) 445 err = brcms_up(wl); 446 else 447 err = -ERFKILL; 448 else 449 err = -ENODEV; 450 spin_unlock_bh(&wl->lock); 451 452 if (err != 0) 453 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", 454 __func__, err); 455 456 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); 457 return err; 458 } 459 460 static void brcms_ops_stop(struct ieee80211_hw *hw, bool suspend) 461 { 462 struct brcms_info *wl = hw->priv; 463 int status; 464 465 ieee80211_stop_queues(hw); 466 467 if (wl->wlc == NULL) 468 return; 469 470 spin_lock_bh(&wl->lock); 471 status = brcms_c_chipmatch(wl->wlc->hw->d11core); 472 spin_unlock_bh(&wl->lock); 473 if (!status) { 474 brcms_err(wl->wlc->hw->d11core, 475 "wl: brcms_ops_stop: chipmatch failed\n"); 476 return; 477 } 478 479 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); 480 481 /* put driver in down state */ 482 spin_lock_bh(&wl->lock); 483 brcms_down(wl); 484 spin_unlock_bh(&wl->lock); 485 } 486 487 static int 488 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 489 { 490 struct brcms_info *wl = hw->priv; 491 492 /* Just STA, AP and ADHOC for now */ 493 if (vif->type != NL80211_IFTYPE_STATION && 494 vif->type != NL80211_IFTYPE_AP && 495 vif->type != NL80211_IFTYPE_ADHOC) { 496 brcms_err(wl->wlc->hw->d11core, 497 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", 498 __func__, vif->type); 499 return -EOPNOTSUPP; 500 } 501 502 spin_lock_bh(&wl->lock); 503 wl->wlc->vif = vif; 504 wl->mute_tx = false; 505 brcms_c_mute(wl->wlc, false); 506 if (vif->type == NL80211_IFTYPE_STATION) 507 brcms_c_start_station(wl->wlc, vif->addr); 508 else if (vif->type == NL80211_IFTYPE_AP) 509 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, 510 vif->cfg.ssid, vif->cfg.ssid_len); 511 else if (vif->type == NL80211_IFTYPE_ADHOC) 512 brcms_c_start_adhoc(wl->wlc, vif->addr); 513 spin_unlock_bh(&wl->lock); 514 515 return 0; 516 } 517 518 static void 519 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 520 { 521 struct brcms_info *wl = hw->priv; 522 523 spin_lock_bh(&wl->lock); 524 wl->wlc->vif = NULL; 525 spin_unlock_bh(&wl->lock); 526 } 527 528 static int brcms_ops_config(struct ieee80211_hw *hw, int radio_idx, 529 u32 changed) 530 { 531 struct ieee80211_conf *conf = &hw->conf; 532 struct brcms_info *wl = hw->priv; 533 struct bcma_device *core = wl->wlc->hw->d11core; 534 int err = 0; 535 int new_int; 536 537 spin_lock_bh(&wl->lock); 538 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { 539 brcms_c_set_beacon_listen_interval(wl->wlc, 540 conf->listen_interval); 541 } 542 if (changed & IEEE80211_CONF_CHANGE_MONITOR) 543 brcms_dbg_info(core, "%s: change monitor mode: %s\n", 544 __func__, conf->flags & IEEE80211_CONF_MONITOR ? 545 "true" : "false"); 546 if (changed & IEEE80211_CONF_CHANGE_PS) 547 brcms_err(core, "%s: change power-save mode: %s (implement)\n", 548 __func__, conf->flags & IEEE80211_CONF_PS ? 549 "true" : "false"); 550 551 if (changed & IEEE80211_CONF_CHANGE_POWER) { 552 err = brcms_c_set_tx_power(wl->wlc, conf->power_level); 553 if (err < 0) { 554 brcms_err(core, "%s: Error setting power_level\n", 555 __func__); 556 goto config_out; 557 } 558 new_int = brcms_c_get_tx_power(wl->wlc); 559 if (new_int != conf->power_level) 560 brcms_err(core, 561 "%s: Power level req != actual, %d %d\n", 562 __func__, conf->power_level, 563 new_int); 564 } 565 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 566 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 || 567 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 568 err = brcms_c_set_channel(wl->wlc, 569 conf->chandef.chan->hw_value); 570 else 571 err = -ENOTSUPP; 572 } 573 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) 574 err = brcms_c_set_rate_limit(wl->wlc, 575 conf->short_frame_max_tx_count, 576 conf->long_frame_max_tx_count); 577 578 config_out: 579 spin_unlock_bh(&wl->lock); 580 return err; 581 } 582 583 static void 584 brcms_ops_bss_info_changed(struct ieee80211_hw *hw, 585 struct ieee80211_vif *vif, 586 struct ieee80211_bss_conf *info, u64 changed) 587 { 588 struct brcms_info *wl = hw->priv; 589 struct bcma_device *core = wl->wlc->hw->d11core; 590 591 if (changed & BSS_CHANGED_ASSOC) { 592 /* association status changed (associated/disassociated) 593 * also implies a change in the AID. 594 */ 595 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME, 596 __func__, vif->cfg.assoc ? "" : "dis"); 597 spin_lock_bh(&wl->lock); 598 brcms_c_associate_upd(wl->wlc, vif->cfg.assoc); 599 spin_unlock_bh(&wl->lock); 600 } 601 if (changed & BSS_CHANGED_ERP_SLOT) { 602 s8 val; 603 604 /* slot timing changed */ 605 if (info->use_short_slot) 606 val = 1; 607 else 608 val = 0; 609 spin_lock_bh(&wl->lock); 610 brcms_c_set_shortslot_override(wl->wlc, val); 611 spin_unlock_bh(&wl->lock); 612 } 613 614 if (changed & BSS_CHANGED_HT) { 615 /* 802.11n parameters changed */ 616 u16 mode = info->ht_operation_mode; 617 618 spin_lock_bh(&wl->lock); 619 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG, 620 mode & IEEE80211_HT_OP_MODE_PROTECTION); 621 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF, 622 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); 623 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS, 624 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); 625 spin_unlock_bh(&wl->lock); 626 } 627 if (changed & BSS_CHANGED_BASIC_RATES) { 628 struct ieee80211_supported_band *bi; 629 u32 br_mask, i; 630 u16 rate; 631 struct brcm_rateset rs; 632 int error; 633 634 /* retrieve the current rates */ 635 spin_lock_bh(&wl->lock); 636 brcms_c_get_current_rateset(wl->wlc, &rs); 637 spin_unlock_bh(&wl->lock); 638 639 br_mask = info->basic_rates; 640 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)]; 641 for (i = 0; i < bi->n_bitrates; i++) { 642 /* convert to internal rate value */ 643 rate = (bi->bitrates[i].bitrate << 1) / 10; 644 645 /* set/clear basic rate flag */ 646 brcms_set_basic_rate(&rs, rate, br_mask & 1); 647 br_mask >>= 1; 648 } 649 650 /* update the rate set */ 651 spin_lock_bh(&wl->lock); 652 error = brcms_c_set_rateset(wl->wlc, &rs); 653 spin_unlock_bh(&wl->lock); 654 if (error) 655 brcms_err(core, "changing basic rates failed: %d\n", 656 error); 657 } 658 if (changed & BSS_CHANGED_BEACON_INT) { 659 /* Beacon interval changed */ 660 spin_lock_bh(&wl->lock); 661 brcms_c_set_beacon_period(wl->wlc, info->beacon_int); 662 spin_unlock_bh(&wl->lock); 663 } 664 if (changed & BSS_CHANGED_BSSID) { 665 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 666 spin_lock_bh(&wl->lock); 667 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); 668 spin_unlock_bh(&wl->lock); 669 } 670 if (changed & BSS_CHANGED_SSID) { 671 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 672 spin_lock_bh(&wl->lock); 673 brcms_c_set_ssid(wl->wlc, vif->cfg.ssid, vif->cfg.ssid_len); 674 spin_unlock_bh(&wl->lock); 675 } 676 if (changed & BSS_CHANGED_BEACON) { 677 /* Beacon data changed, retrieve new beacon (beaconing modes) */ 678 struct sk_buff *beacon; 679 u16 tim_offset = 0; 680 681 spin_lock_bh(&wl->lock); 682 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL, 0); 683 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 684 info->dtim_period); 685 spin_unlock_bh(&wl->lock); 686 } 687 688 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 689 struct sk_buff *probe_resp; 690 691 spin_lock_bh(&wl->lock); 692 probe_resp = ieee80211_proberesp_get(hw, vif); 693 brcms_c_set_new_probe_resp(wl->wlc, probe_resp); 694 spin_unlock_bh(&wl->lock); 695 } 696 697 if (changed & BSS_CHANGED_BEACON_ENABLED) { 698 /* Beaconing should be enabled/disabled (beaconing modes) */ 699 brcms_err(core, "%s: Beacon enabled: %s\n", __func__, 700 info->enable_beacon ? "true" : "false"); 701 if (info->enable_beacon && 702 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) { 703 brcms_c_enable_probe_resp(wl->wlc, true); 704 } else { 705 brcms_c_enable_probe_resp(wl->wlc, false); 706 } 707 } 708 709 if (changed & BSS_CHANGED_CQM) { 710 /* Connection quality monitor config changed */ 711 brcms_err(core, "%s: cqm change: threshold %d, hys %d " 712 " (implement)\n", __func__, info->cqm_rssi_thold, 713 info->cqm_rssi_hyst); 714 } 715 716 if (changed & BSS_CHANGED_IBSS) { 717 /* IBSS join status changed */ 718 brcms_err(core, "%s: IBSS joined: %s (implement)\n", 719 __func__, vif->cfg.ibss_joined ? "true" : "false"); 720 } 721 722 if (changed & BSS_CHANGED_ARP_FILTER) { 723 /* Hardware ARP filter address list or state changed */ 724 brcms_err(core, "%s: arp filtering: %d addresses" 725 " (implement)\n", __func__, vif->cfg.arp_addr_cnt); 726 } 727 728 if (changed & BSS_CHANGED_QOS) { 729 /* 730 * QoS for this association was enabled/disabled. 731 * Note that it is only ever disabled for station mode. 732 */ 733 brcms_err(core, "%s: qos enabled: %s (implement)\n", 734 __func__, info->qos ? "true" : "false"); 735 } 736 return; 737 } 738 739 static void 740 brcms_ops_configure_filter(struct ieee80211_hw *hw, 741 unsigned int changed_flags, 742 unsigned int *total_flags, u64 multicast) 743 { 744 struct brcms_info *wl = hw->priv; 745 struct bcma_device *core = wl->wlc->hw->d11core; 746 747 changed_flags &= MAC_FILTERS; 748 *total_flags &= MAC_FILTERS; 749 750 if (changed_flags & FIF_ALLMULTI) 751 brcms_dbg_info(core, "FIF_ALLMULTI\n"); 752 if (changed_flags & FIF_FCSFAIL) 753 brcms_dbg_info(core, "FIF_FCSFAIL\n"); 754 if (changed_flags & FIF_CONTROL) 755 brcms_dbg_info(core, "FIF_CONTROL\n"); 756 if (changed_flags & FIF_OTHER_BSS) 757 brcms_dbg_info(core, "FIF_OTHER_BSS\n"); 758 if (changed_flags & FIF_PSPOLL) 759 brcms_dbg_info(core, "FIF_PSPOLL\n"); 760 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) 761 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n"); 762 763 spin_lock_bh(&wl->lock); 764 brcms_c_mac_promisc(wl->wlc, *total_flags); 765 spin_unlock_bh(&wl->lock); 766 return; 767 } 768 769 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw, 770 struct ieee80211_vif *vif, 771 const u8 *mac_addr) 772 { 773 struct brcms_info *wl = hw->priv; 774 spin_lock_bh(&wl->lock); 775 brcms_c_scan_start(wl->wlc); 776 spin_unlock_bh(&wl->lock); 777 return; 778 } 779 780 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw, 781 struct ieee80211_vif *vif) 782 { 783 struct brcms_info *wl = hw->priv; 784 spin_lock_bh(&wl->lock); 785 brcms_c_scan_stop(wl->wlc); 786 spin_unlock_bh(&wl->lock); 787 return; 788 } 789 790 static int 791 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 792 unsigned int link_id, 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->max_pdu = 16; 815 816 /* 817 * minstrel_ht initiates addBA on our behalf by calling 818 * ieee80211_start_tx_ba_session() 819 */ 820 return 0; 821 } 822 823 static int 824 brcms_ops_ampdu_action(struct ieee80211_hw *hw, 825 struct ieee80211_vif *vif, 826 struct ieee80211_ampdu_params *params) 827 { 828 struct brcms_info *wl = hw->priv; 829 struct scb *scb = &wl->wlc->pri_scb; 830 int status; 831 struct ieee80211_sta *sta = params->sta; 832 enum ieee80211_ampdu_mlme_action action = params->action; 833 u16 tid = params->tid; 834 835 if (WARN_ON(scb->magic != SCB_MAGIC)) 836 return -EIDRM; 837 switch (action) { 838 case IEEE80211_AMPDU_RX_START: 839 break; 840 case IEEE80211_AMPDU_RX_STOP: 841 break; 842 case IEEE80211_AMPDU_TX_START: 843 spin_lock_bh(&wl->lock); 844 status = brcms_c_aggregatable(wl->wlc, tid); 845 spin_unlock_bh(&wl->lock); 846 if (!status) { 847 brcms_dbg_ht(wl->wlc->hw->d11core, 848 "START: tid %d is not agg\'able\n", tid); 849 return -EINVAL; 850 } 851 return IEEE80211_AMPDU_TX_START_IMMEDIATE; 852 853 case IEEE80211_AMPDU_TX_STOP_CONT: 854 case IEEE80211_AMPDU_TX_STOP_FLUSH: 855 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 856 spin_lock_bh(&wl->lock); 857 brcms_c_ampdu_flush(wl->wlc, sta, tid); 858 spin_unlock_bh(&wl->lock); 859 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 860 break; 861 case IEEE80211_AMPDU_TX_OPERATIONAL: 862 /* 863 * BA window size from ADDBA response ('buf_size') defines how 864 * many outstanding MPDUs are allowed for the BA stream by 865 * recipient and traffic class (this is actually unused by the 866 * rest of the driver). 'ampdu_factor' gives maximum AMPDU size. 867 */ 868 spin_lock_bh(&wl->lock); 869 brcms_c_ampdu_tx_operational(wl->wlc, tid, 870 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + 871 sta->deflink.ht_cap.ampdu_factor)) - 1); 872 spin_unlock_bh(&wl->lock); 873 /* Power save wakeup */ 874 break; 875 default: 876 brcms_err(wl->wlc->hw->d11core, 877 "%s: Invalid command, ignoring\n", __func__); 878 } 879 880 return 0; 881 } 882 883 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw) 884 { 885 struct brcms_info *wl = hw->priv; 886 bool blocked; 887 888 spin_lock_bh(&wl->lock); 889 blocked = brcms_c_check_radio_disabled(wl->wlc); 890 spin_unlock_bh(&wl->lock); 891 892 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 893 } 894 895 static bool brcms_tx_flush_completed(struct brcms_info *wl) 896 { 897 bool result; 898 899 spin_lock_bh(&wl->lock); 900 result = brcms_c_tx_flush_completed(wl->wlc); 901 spin_unlock_bh(&wl->lock); 902 return result; 903 } 904 905 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 906 u32 queues, bool drop) 907 { 908 struct brcms_info *wl = hw->priv; 909 int ret; 910 911 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false"); 912 913 ret = wait_event_timeout(wl->tx_flush_wq, 914 brcms_tx_flush_completed(wl), 915 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT)); 916 917 brcms_dbg_mac80211(wl->wlc->hw->d11core, 918 "ret=%d\n", jiffies_to_msecs(ret)); 919 } 920 921 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 922 { 923 struct brcms_info *wl = hw->priv; 924 u64 tsf; 925 926 spin_lock_bh(&wl->lock); 927 tsf = brcms_c_tsf_get(wl->wlc); 928 spin_unlock_bh(&wl->lock); 929 930 return tsf; 931 } 932 933 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, 934 struct ieee80211_vif *vif, u64 tsf) 935 { 936 struct brcms_info *wl = hw->priv; 937 938 spin_lock_bh(&wl->lock); 939 brcms_c_tsf_set(wl->wlc, tsf); 940 spin_unlock_bh(&wl->lock); 941 } 942 943 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw, 944 struct ieee80211_sta *sta, bool set) 945 { 946 struct brcms_info *wl = hw->priv; 947 struct sk_buff *beacon = NULL; 948 u16 tim_offset = 0; 949 950 spin_lock_bh(&wl->lock); 951 if (wl->wlc->vif) 952 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif, 953 &tim_offset, NULL, 0); 954 if (beacon) 955 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 956 wl->wlc->vif->bss_conf.dtim_period); 957 spin_unlock_bh(&wl->lock); 958 959 return 0; 960 } 961 962 static const struct ieee80211_ops brcms_ops = { 963 .add_chanctx = ieee80211_emulate_add_chanctx, 964 .remove_chanctx = ieee80211_emulate_remove_chanctx, 965 .change_chanctx = ieee80211_emulate_change_chanctx, 966 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 967 .tx = brcms_ops_tx, 968 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 969 .start = brcms_ops_start, 970 .stop = brcms_ops_stop, 971 .add_interface = brcms_ops_add_interface, 972 .remove_interface = brcms_ops_remove_interface, 973 .config = brcms_ops_config, 974 .bss_info_changed = brcms_ops_bss_info_changed, 975 .configure_filter = brcms_ops_configure_filter, 976 .sw_scan_start = brcms_ops_sw_scan_start, 977 .sw_scan_complete = brcms_ops_sw_scan_complete, 978 .conf_tx = brcms_ops_conf_tx, 979 .sta_add = brcms_ops_sta_add, 980 .ampdu_action = brcms_ops_ampdu_action, 981 .rfkill_poll = brcms_ops_rfkill_poll, 982 .flush = brcms_ops_flush, 983 .get_tsf = brcms_ops_get_tsf, 984 .set_tsf = brcms_ops_set_tsf, 985 .set_tim = brcms_ops_beacon_set_tim, 986 }; 987 988 void brcms_dpc(struct tasklet_struct *t) 989 { 990 struct brcms_info *wl; 991 992 wl = from_tasklet(wl, t, tasklet); 993 994 spin_lock_bh(&wl->lock); 995 996 /* call the common second level interrupt handler */ 997 if (wl->pub->up) { 998 if (wl->resched) { 999 unsigned long flags; 1000 1001 spin_lock_irqsave(&wl->isr_lock, flags); 1002 brcms_c_intrsupd(wl->wlc); 1003 spin_unlock_irqrestore(&wl->isr_lock, flags); 1004 } 1005 1006 wl->resched = brcms_c_dpc(wl->wlc, true); 1007 } 1008 1009 /* brcms_c_dpc() may bring the driver down */ 1010 if (!wl->pub->up) 1011 goto done; 1012 1013 /* re-schedule dpc */ 1014 if (wl->resched) 1015 tasklet_schedule(&wl->tasklet); 1016 else 1017 /* re-enable interrupts */ 1018 brcms_intrson(wl); 1019 1020 done: 1021 spin_unlock_bh(&wl->lock); 1022 wake_up(&wl->tx_flush_wq); 1023 } 1024 1025 static irqreturn_t brcms_isr(int irq, void *dev_id) 1026 { 1027 struct brcms_info *wl; 1028 irqreturn_t ret = IRQ_NONE; 1029 1030 wl = (struct brcms_info *) dev_id; 1031 1032 spin_lock(&wl->isr_lock); 1033 1034 /* call common first level interrupt handler */ 1035 if (brcms_c_isr(wl->wlc)) { 1036 /* schedule second level handler */ 1037 tasklet_schedule(&wl->tasklet); 1038 ret = IRQ_HANDLED; 1039 } 1040 1041 spin_unlock(&wl->isr_lock); 1042 1043 return ret; 1044 } 1045 1046 /* 1047 * is called in brcms_pci_probe() context, therefore no locking required. 1048 */ 1049 static int ieee_hw_rate_init(struct ieee80211_hw *hw) 1050 { 1051 struct brcms_info *wl = hw->priv; 1052 struct brcms_c_info *wlc = wl->wlc; 1053 struct ieee80211_supported_band *band; 1054 u16 phy_type; 1055 1056 hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; 1057 hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; 1058 1059 phy_type = brcms_c_get_phy_type(wl->wlc, 0); 1060 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1061 band = &wlc->bandstate[BAND_2G_INDEX]->band; 1062 *band = brcms_band_2GHz_nphy_template; 1063 if (phy_type == PHY_TYPE_LCN) { 1064 /* Single stream */ 1065 band->ht_cap.mcs.rx_mask[1] = 0; 1066 band->ht_cap.mcs.rx_highest = cpu_to_le16(72); 1067 } 1068 hw->wiphy->bands[NL80211_BAND_2GHZ] = band; 1069 } else { 1070 return -EPERM; 1071 } 1072 1073 /* Assume all bands use the same phy. True for 11n devices. */ 1074 if (wl->pub->_nbands > 1) { 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 ieee80211_hw_set(hw, MFP_CAPABLE); 1095 1096 hw->extra_tx_headroom = brcms_c_get_header_len(); 1097 hw->queues = N_TX_QUEUES; 1098 hw->max_rates = 2; /* Primary rate and 1 fallback rate */ 1099 1100 /* channel change time is dependent on chip and band */ 1101 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1102 BIT(NL80211_IFTYPE_AP) | 1103 BIT(NL80211_IFTYPE_ADHOC); 1104 1105 /* 1106 * deactivate sending probe responses by ucude, because this will 1107 * cause problems when WPS is used. 1108 * 1109 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 1110 */ 1111 1112 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1113 1114 hw->rate_control_algorithm = "minstrel_ht"; 1115 1116 hw->sta_data_size = 0; 1117 return ieee_hw_rate_init(hw); 1118 } 1119 1120 /* 1121 * attach to the WL device. 1122 * 1123 * Attach to the WL device identified by vendor and device parameters. 1124 * regs is a host accessible memory address pointing to WL device registers. 1125 * 1126 * is called in brcms_bcma_probe() context, therefore no locking required. 1127 */ 1128 static struct brcms_info *brcms_attach(struct bcma_device *pdev) 1129 { 1130 struct brcms_info *wl = NULL; 1131 int unit, err; 1132 struct ieee80211_hw *hw; 1133 u8 perm[ETH_ALEN]; 1134 1135 unit = n_adapters_found; 1136 err = 0; 1137 1138 if (unit < 0) 1139 return NULL; 1140 1141 /* allocate private info */ 1142 hw = bcma_get_drvdata(pdev); 1143 if (hw != NULL) 1144 wl = hw->priv; 1145 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) 1146 return NULL; 1147 wl->wiphy = hw->wiphy; 1148 1149 atomic_set(&wl->callbacks, 0); 1150 1151 init_waitqueue_head(&wl->tx_flush_wq); 1152 1153 /* setup the bottom half handler */ 1154 tasklet_setup(&wl->tasklet, brcms_dpc); 1155 1156 spin_lock_init(&wl->lock); 1157 spin_lock_init(&wl->isr_lock); 1158 1159 /* common load-time initialization */ 1160 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); 1161 if (!wl->wlc) { 1162 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", 1163 KBUILD_MODNAME, err); 1164 goto fail; 1165 } 1166 wl->pub = brcms_c_pub(wl->wlc); 1167 1168 wl->pub->ieee_hw = hw; 1169 1170 /* register our interrupt handler */ 1171 if (request_irq(pdev->irq, brcms_isr, 1172 IRQF_SHARED, KBUILD_MODNAME, wl)) { 1173 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); 1174 goto fail; 1175 } 1176 wl->irq = pdev->irq; 1177 1178 /* register module */ 1179 brcms_c_module_register(wl->pub, "linux", wl, NULL); 1180 1181 if (ieee_hw_init(hw)) { 1182 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, 1183 __func__); 1184 goto fail; 1185 } 1186 1187 brcms_c_regd_init(wl->wlc); 1188 1189 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); 1190 if (WARN_ON(!is_valid_ether_addr(perm))) 1191 goto fail; 1192 SET_IEEE80211_PERM_ADDR(hw, perm); 1193 1194 err = ieee80211_register_hw(hw); 1195 if (err) 1196 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" 1197 "%d\n", __func__, err); 1198 1199 if (wl->pub->srom_ccode[0] && 1200 regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) 1201 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); 1202 1203 brcms_debugfs_attach(wl->pub); 1204 brcms_debugfs_create_files(wl->pub); 1205 n_adapters_found++; 1206 return wl; 1207 1208 fail: 1209 brcms_free(wl); 1210 return NULL; 1211 } 1212 1213 1214 1215 /* 1216 * determines if a device is a WL device, and if so, attaches it. 1217 * 1218 * This function determines if a device pointed to by pdev is a WL device, 1219 * and if so, performs a brcms_attach() on it. 1220 * 1221 * Perimeter lock is initialized in the course of this function. 1222 */ 1223 static int brcms_bcma_probe(struct bcma_device *pdev) 1224 { 1225 struct brcms_info *wl; 1226 struct ieee80211_hw *hw; 1227 int ret; 1228 1229 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", 1230 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, 1231 pdev->irq); 1232 1233 if ((pdev->id.manuf != BCMA_MANUF_BCM) || 1234 (pdev->id.id != BCMA_CORE_80211)) 1235 return -ENODEV; 1236 1237 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); 1238 if (!hw) { 1239 pr_err("%s: ieee80211_alloc_hw failed\n", __func__); 1240 return -ENOMEM; 1241 } 1242 1243 SET_IEEE80211_DEV(hw, &pdev->dev); 1244 1245 bcma_set_drvdata(pdev, hw); 1246 1247 memset(hw->priv, 0, sizeof(*wl)); 1248 1249 wl = brcms_attach(pdev); 1250 if (!wl) { 1251 pr_err("%s: brcms_attach failed!\n", __func__); 1252 ret = -ENODEV; 1253 goto err_free_ieee80211; 1254 } 1255 brcms_led_register(wl); 1256 1257 return 0; 1258 1259 err_free_ieee80211: 1260 ieee80211_free_hw(hw); 1261 return ret; 1262 } 1263 1264 static int brcms_suspend(struct bcma_device *pdev) 1265 { 1266 struct brcms_info *wl; 1267 struct ieee80211_hw *hw; 1268 1269 hw = bcma_get_drvdata(pdev); 1270 wl = hw->priv; 1271 if (!wl) { 1272 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, 1273 __func__); 1274 return -ENODEV; 1275 } 1276 1277 /* only need to flag hw is down for proper resume */ 1278 spin_lock_bh(&wl->lock); 1279 wl->pub->hw_up = false; 1280 spin_unlock_bh(&wl->lock); 1281 1282 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); 1283 1284 return 0; 1285 } 1286 1287 static int brcms_resume(struct bcma_device *pdev) 1288 { 1289 return 0; 1290 } 1291 1292 static struct bcma_driver brcms_bcma_driver = { 1293 .name = KBUILD_MODNAME, 1294 .probe = brcms_bcma_probe, 1295 .suspend = brcms_suspend, 1296 .resume = brcms_resume, 1297 .remove = brcms_remove, 1298 .id_table = brcms_coreid_table, 1299 }; 1300 1301 /* 1302 * This is the main entry point for the brcmsmac driver. 1303 * 1304 * This function is scheduled upon module initialization and 1305 * does the driver registration, which result in brcms_bcma_probe() 1306 * call resulting in the driver bringup. 1307 */ 1308 static void brcms_driver_init(struct work_struct *work) 1309 { 1310 int error; 1311 1312 error = bcma_driver_register(&brcms_bcma_driver); 1313 if (error) 1314 pr_err("%s: register returned %d\n", __func__, error); 1315 } 1316 1317 static DECLARE_WORK(brcms_driver_work, brcms_driver_init); 1318 1319 static int __init brcms_module_init(void) 1320 { 1321 brcms_debugfs_init(); 1322 if (!schedule_work(&brcms_driver_work)) 1323 return -EBUSY; 1324 1325 return 0; 1326 } 1327 1328 /* 1329 * This function unloads the brcmsmac driver from the system. 1330 * 1331 * This function unconditionally unloads the brcmsmac driver module from the 1332 * system. 1333 * 1334 */ 1335 static void __exit brcms_module_exit(void) 1336 { 1337 cancel_work_sync(&brcms_driver_work); 1338 bcma_driver_unregister(&brcms_bcma_driver); 1339 brcms_debugfs_exit(); 1340 } 1341 1342 module_init(brcms_module_init); 1343 module_exit(brcms_module_exit); 1344 1345 /* 1346 * precondition: perimeter lock has been acquired 1347 */ 1348 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, 1349 bool state, int prio) 1350 { 1351 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); 1352 } 1353 1354 /* 1355 * precondition: perimeter lock has been acquired 1356 */ 1357 void brcms_init(struct brcms_info *wl) 1358 { 1359 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", 1360 wl->pub->unit); 1361 brcms_reset(wl); 1362 brcms_c_init(wl->wlc, wl->mute_tx); 1363 } 1364 1365 /* 1366 * precondition: perimeter lock has been acquired 1367 */ 1368 uint brcms_reset(struct brcms_info *wl) 1369 { 1370 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); 1371 brcms_c_reset(wl->wlc); 1372 1373 /* dpc will not be rescheduled */ 1374 wl->resched = false; 1375 1376 /* inform publicly that interface is down */ 1377 wl->pub->up = false; 1378 1379 return 0; 1380 } 1381 1382 void brcms_fatal_error(struct brcms_info *wl) 1383 { 1384 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", 1385 wl->wlc->pub->unit); 1386 brcms_reset(wl); 1387 ieee80211_restart_hw(wl->pub->ieee_hw); 1388 } 1389 1390 /* 1391 * These are interrupt on/off entry points. Disable interrupts 1392 * during interrupt state transition. 1393 */ 1394 void brcms_intrson(struct brcms_info *wl) 1395 { 1396 unsigned long flags; 1397 1398 spin_lock_irqsave(&wl->isr_lock, flags); 1399 brcms_c_intrson(wl->wlc); 1400 spin_unlock_irqrestore(&wl->isr_lock, flags); 1401 } 1402 1403 u32 brcms_intrsoff(struct brcms_info *wl) 1404 { 1405 unsigned long flags; 1406 u32 status; 1407 1408 spin_lock_irqsave(&wl->isr_lock, flags); 1409 status = brcms_c_intrsoff(wl->wlc); 1410 spin_unlock_irqrestore(&wl->isr_lock, flags); 1411 return status; 1412 } 1413 1414 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) 1415 { 1416 unsigned long flags; 1417 1418 spin_lock_irqsave(&wl->isr_lock, flags); 1419 brcms_c_intrsrestore(wl->wlc, macintmask); 1420 spin_unlock_irqrestore(&wl->isr_lock, flags); 1421 } 1422 1423 /* 1424 * precondition: perimeter lock has been acquired 1425 */ 1426 int brcms_up(struct brcms_info *wl) 1427 { 1428 int error = 0; 1429 1430 if (wl->pub->up) 1431 return 0; 1432 1433 error = brcms_c_up(wl->wlc); 1434 1435 return error; 1436 } 1437 1438 /* 1439 * precondition: perimeter lock has been acquired 1440 */ 1441 void brcms_down(struct brcms_info *wl) 1442 __must_hold(&wl->lock) 1443 { 1444 uint callbacks, ret_val = 0; 1445 1446 /* call common down function */ 1447 ret_val = brcms_c_down(wl->wlc); 1448 callbacks = atomic_read(&wl->callbacks) - ret_val; 1449 1450 /* wait for down callbacks to complete */ 1451 spin_unlock_bh(&wl->lock); 1452 1453 /* For HIGH_only driver, it's important to actually schedule other work, 1454 * not just spin wait since everything runs at schedule level 1455 */ 1456 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); 1457 1458 spin_lock_bh(&wl->lock); 1459 } 1460 1461 /* 1462 * precondition: perimeter lock is not acquired 1463 */ 1464 static void _brcms_timer(struct work_struct *work) 1465 { 1466 struct brcms_timer *t = container_of(work, struct brcms_timer, 1467 dly_wrk.work); 1468 1469 spin_lock_bh(&t->wl->lock); 1470 1471 if (t->set) { 1472 if (t->periodic) { 1473 atomic_inc(&t->wl->callbacks); 1474 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, 1475 &t->dly_wrk, 1476 msecs_to_jiffies(t->ms)); 1477 } else { 1478 t->set = false; 1479 } 1480 1481 t->fn(t->arg); 1482 } 1483 1484 atomic_dec(&t->wl->callbacks); 1485 1486 spin_unlock_bh(&t->wl->lock); 1487 } 1488 1489 /* 1490 * Adds a timer to the list. Caller supplies a timer function. 1491 * Is called from wlc. 1492 * 1493 * precondition: perimeter lock has been acquired 1494 */ 1495 struct brcms_timer *brcms_init_timer(struct brcms_info *wl, 1496 void (*fn) (void *arg), 1497 void *arg, const char *name) 1498 { 1499 struct brcms_timer *t; 1500 1501 t = kzalloc(sizeof(*t), GFP_ATOMIC); 1502 if (!t) 1503 return NULL; 1504 1505 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); 1506 t->wl = wl; 1507 t->fn = fn; 1508 t->arg = arg; 1509 t->next = wl->timers; 1510 wl->timers = t; 1511 1512 #ifdef DEBUG 1513 t->name = kstrdup(name, GFP_ATOMIC); 1514 #endif 1515 1516 return t; 1517 } 1518 1519 /* 1520 * adds only the kernel timer since it's going to be more accurate 1521 * as well as it's easier to make it periodic 1522 * 1523 * precondition: perimeter lock has been acquired 1524 */ 1525 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) 1526 { 1527 struct ieee80211_hw *hw = t->wl->pub->ieee_hw; 1528 1529 #ifdef DEBUG 1530 if (t->set) 1531 brcms_dbg_info(t->wl->wlc->hw->d11core, 1532 "%s: Already set. Name: %s, per %d\n", 1533 __func__, t->name, periodic); 1534 #endif 1535 t->ms = ms; 1536 t->periodic = (bool) periodic; 1537 if (!t->set) { 1538 t->set = true; 1539 atomic_inc(&t->wl->callbacks); 1540 } 1541 1542 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); 1543 } 1544 1545 /* 1546 * return true if timer successfully deleted, false if still pending 1547 * 1548 * precondition: perimeter lock has been acquired 1549 */ 1550 bool brcms_del_timer(struct brcms_timer *t) 1551 { 1552 if (t->set) { 1553 t->set = false; 1554 if (!cancel_delayed_work(&t->dly_wrk)) 1555 return false; 1556 1557 atomic_dec(&t->wl->callbacks); 1558 } 1559 1560 return true; 1561 } 1562 1563 /* 1564 * precondition: perimeter lock has been acquired 1565 */ 1566 void brcms_free_timer(struct brcms_timer *t) 1567 { 1568 struct brcms_info *wl = t->wl; 1569 struct brcms_timer *tmp; 1570 1571 /* delete the timer in case it is active */ 1572 brcms_del_timer(t); 1573 1574 if (wl->timers == t) { 1575 wl->timers = wl->timers->next; 1576 #ifdef DEBUG 1577 kfree(t->name); 1578 #endif 1579 kfree(t); 1580 return; 1581 1582 } 1583 1584 tmp = wl->timers; 1585 while (tmp) { 1586 if (tmp->next == t) { 1587 tmp->next = t->next; 1588 #ifdef DEBUG 1589 kfree(t->name); 1590 #endif 1591 kfree(t); 1592 return; 1593 } 1594 tmp = tmp->next; 1595 } 1596 1597 } 1598 1599 /* 1600 * precondition: no locking required 1601 */ 1602 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) 1603 { 1604 int i, entry; 1605 const u8 *pdata; 1606 struct firmware_hdr *hdr; 1607 for (i = 0; i < wl->fw.fw_cnt; i++) { 1608 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1609 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1610 entry++, hdr++) { 1611 u32 len = le32_to_cpu(hdr->len); 1612 if (le32_to_cpu(hdr->idx) == idx) { 1613 pdata = wl->fw.fw_bin[i]->data + 1614 le32_to_cpu(hdr->offset); 1615 *pbuf = kvmemdup(pdata, len, GFP_KERNEL); 1616 if (*pbuf == NULL) 1617 return -ENOMEM; 1618 return 0; 1619 } 1620 } 1621 } 1622 brcms_err(wl->wlc->hw->d11core, 1623 "ERROR: ucode buf tag:%d can not be found!\n", idx); 1624 *pbuf = NULL; 1625 return -ENODATA; 1626 } 1627 1628 /* 1629 * Precondition: Since this function is called in brcms_bcma_probe() context, 1630 * no locking is required. 1631 */ 1632 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) 1633 { 1634 int i, entry; 1635 const u8 *pdata; 1636 struct firmware_hdr *hdr; 1637 for (i = 0; i < wl->fw.fw_cnt; i++) { 1638 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1639 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1640 entry++, hdr++) { 1641 if (le32_to_cpu(hdr->idx) == idx) { 1642 pdata = wl->fw.fw_bin[i]->data + 1643 le32_to_cpu(hdr->offset); 1644 if (le32_to_cpu(hdr->len) != 4) { 1645 brcms_err(wl->wlc->hw->d11core, 1646 "ERROR: fw hdr len\n"); 1647 return -ENOMSG; 1648 } 1649 *n_bytes = le32_to_cpu(*((__le32 *) pdata)); 1650 return 0; 1651 } 1652 } 1653 } 1654 brcms_err(wl->wlc->hw->d11core, 1655 "ERROR: ucode tag:%d can not be found!\n", idx); 1656 return -ENOMSG; 1657 } 1658 1659 /* 1660 * precondition: can both be called locked and unlocked 1661 */ 1662 void brcms_ucode_free_buf(void *p) 1663 { 1664 kvfree(p); 1665 } 1666 1667 /* 1668 * checks validity of all firmware images loaded from user space 1669 * 1670 * Precondition: Since this function is called in brcms_bcma_probe() context, 1671 * no locking is required. 1672 */ 1673 int brcms_check_firmwares(struct brcms_info *wl) 1674 { 1675 int i; 1676 int entry; 1677 int rc = 0; 1678 const struct firmware *fw; 1679 const struct firmware *fw_hdr; 1680 struct firmware_hdr *ucode_hdr; 1681 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) { 1682 fw = wl->fw.fw_bin[i]; 1683 fw_hdr = wl->fw.fw_hdr[i]; 1684 if (fw == NULL && fw_hdr == NULL) { 1685 break; 1686 } else if (fw == NULL || fw_hdr == NULL) { 1687 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", 1688 __func__); 1689 rc = -EBADF; 1690 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) { 1691 wiphy_err(wl->wiphy, "%s: non integral fw hdr file " 1692 "size %zu/%zu\n", __func__, fw_hdr->size, 1693 sizeof(struct firmware_hdr)); 1694 rc = -EBADF; 1695 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { 1696 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n", 1697 __func__, fw->size); 1698 rc = -EBADF; 1699 } else { 1700 /* check if ucode section overruns firmware image */ 1701 ucode_hdr = (struct firmware_hdr *)fw_hdr->data; 1702 for (entry = 0; entry < wl->fw.hdr_num_entries[i] && 1703 !rc; entry++, ucode_hdr++) { 1704 if (le32_to_cpu(ucode_hdr->offset) + 1705 le32_to_cpu(ucode_hdr->len) > 1706 fw->size) { 1707 wiphy_err(wl->wiphy, 1708 "%s: conflicting bin/hdr\n", 1709 __func__); 1710 rc = -EBADF; 1711 } 1712 } 1713 } 1714 } 1715 if (rc == 0 && wl->fw.fw_cnt != i) { 1716 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, 1717 wl->fw.fw_cnt); 1718 rc = -EBADF; 1719 } 1720 return rc; 1721 } 1722 1723 /* 1724 * precondition: perimeter lock has been acquired 1725 */ 1726 bool brcms_rfkill_set_hw_state(struct brcms_info *wl) 1727 __must_hold(&wl->lock) 1728 { 1729 bool blocked = brcms_c_check_radio_disabled(wl->wlc); 1730 1731 spin_unlock_bh(&wl->lock); 1732 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 1733 if (blocked) 1734 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); 1735 spin_lock_bh(&wl->lock); 1736 return blocked; 1737 } 1738