1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de> 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #define __UNDEF_NO_VERSION__ 19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 20 21 #include <linux/etherdevice.h> 22 #include <linux/sched.h> 23 #include <linux/firmware.h> 24 #include <linux/interrupt.h> 25 #include <linux/module.h> 26 #include <linux/bcma/bcma.h> 27 #include <net/mac80211.h> 28 #include <defs.h> 29 #include "phy/phy_int.h" 30 #include "d11.h" 31 #include "channel.h" 32 #include "scb.h" 33 #include "pub.h" 34 #include "ucode_loader.h" 35 #include "mac80211_if.h" 36 #include "main.h" 37 #include "debug.h" 38 #include "led.h" 39 40 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */ 41 #define BRCMS_FLUSH_TIMEOUT 500 /* msec */ 42 43 /* Flags we support */ 44 #define MAC_FILTERS (FIF_ALLMULTI | \ 45 FIF_FCSFAIL | \ 46 FIF_CONTROL | \ 47 FIF_OTHER_BSS | \ 48 FIF_BCN_PRBRESP_PROMISC | \ 49 FIF_PSPOLL) 50 51 #define CHAN2GHZ(channel, freqency, chflags) { \ 52 .band = NL80211_BAND_2GHZ, \ 53 .center_freq = (freqency), \ 54 .hw_value = (channel), \ 55 .flags = chflags, \ 56 .max_antenna_gain = 0, \ 57 .max_power = 19, \ 58 } 59 60 #define CHAN5GHZ(channel, chflags) { \ 61 .band = NL80211_BAND_5GHZ, \ 62 .center_freq = 5000 + 5*(channel), \ 63 .hw_value = (channel), \ 64 .flags = chflags, \ 65 .max_antenna_gain = 0, \ 66 .max_power = 21, \ 67 } 68 69 #define RATE(rate100m, _flags) { \ 70 .bitrate = (rate100m), \ 71 .flags = (_flags), \ 72 .hw_value = (rate100m / 5), \ 73 } 74 75 struct firmware_hdr { 76 __le32 offset; 77 __le32 len; 78 __le32 idx; 79 }; 80 81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = { 82 "brcm/bcm43xx", 83 NULL 84 }; 85 86 static int n_adapters_found; 87 88 MODULE_AUTHOR("Broadcom Corporation"); 89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); 90 MODULE_LICENSE("Dual BSD/GPL"); 91 /* This needs to be adjusted when brcms_firmwares changes */ 92 MODULE_FIRMWARE("brcm/bcm43xx-0.fw"); 93 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw"); 94 95 /* recognized BCMA Core IDs */ 96 static struct bcma_device_id brcms_coreid_table[] = { 97 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS), 98 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS), 99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS), 100 {}, 101 }; 102 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); 103 104 #if defined(CONFIG_BRCMDBG) 105 /* 106 * Module parameter for setting the debug message level. Available 107 * flags are specified by the BRCM_DL_* macros in 108 * drivers/net/wireless/brcm80211/include/defs.h. 109 */ 110 module_param_named(debug, brcm_msg_level, uint, 0644); 111 #endif 112 113 static struct ieee80211_channel brcms_2ghz_chantable[] = { 114 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), 115 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), 116 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), 117 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), 118 CHAN2GHZ(5, 2432, 0), 119 CHAN2GHZ(6, 2437, 0), 120 CHAN2GHZ(7, 2442, 0), 121 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), 122 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), 123 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), 124 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), 125 CHAN2GHZ(12, 2467, 126 IEEE80211_CHAN_NO_IR | 127 IEEE80211_CHAN_NO_HT40PLUS), 128 CHAN2GHZ(13, 2472, 129 IEEE80211_CHAN_NO_IR | 130 IEEE80211_CHAN_NO_HT40PLUS), 131 CHAN2GHZ(14, 2484, 132 IEEE80211_CHAN_NO_IR | 133 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS | 134 IEEE80211_CHAN_NO_OFDM) 135 }; 136 137 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { 138 /* UNII-1 */ 139 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), 140 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), 141 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), 142 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), 143 /* UNII-2 */ 144 CHAN5GHZ(52, 145 IEEE80211_CHAN_RADAR | 146 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 147 CHAN5GHZ(56, 148 IEEE80211_CHAN_RADAR | 149 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 150 CHAN5GHZ(60, 151 IEEE80211_CHAN_RADAR | 152 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 153 CHAN5GHZ(64, 154 IEEE80211_CHAN_RADAR | 155 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 156 /* MID */ 157 CHAN5GHZ(100, 158 IEEE80211_CHAN_RADAR | 159 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 160 CHAN5GHZ(104, 161 IEEE80211_CHAN_RADAR | 162 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 163 CHAN5GHZ(108, 164 IEEE80211_CHAN_RADAR | 165 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 166 CHAN5GHZ(112, 167 IEEE80211_CHAN_RADAR | 168 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 169 CHAN5GHZ(116, 170 IEEE80211_CHAN_RADAR | 171 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 172 CHAN5GHZ(120, 173 IEEE80211_CHAN_RADAR | 174 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 175 CHAN5GHZ(124, 176 IEEE80211_CHAN_RADAR | 177 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 178 CHAN5GHZ(128, 179 IEEE80211_CHAN_RADAR | 180 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 181 CHAN5GHZ(132, 182 IEEE80211_CHAN_RADAR | 183 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 184 CHAN5GHZ(136, 185 IEEE80211_CHAN_RADAR | 186 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 187 CHAN5GHZ(140, 188 IEEE80211_CHAN_RADAR | 189 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS | 190 IEEE80211_CHAN_NO_HT40MINUS), 191 /* UNII-3 */ 192 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), 193 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), 194 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), 195 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), 196 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 197 }; 198 199 /* 200 * The rate table is used for both 2.4G and 5G rates. The 201 * latter being a subset as it does not support CCK rates. 202 */ 203 static struct ieee80211_rate legacy_ratetable[] = { 204 RATE(10, 0), 205 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), 206 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), 207 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), 208 RATE(60, 0), 209 RATE(90, 0), 210 RATE(120, 0), 211 RATE(180, 0), 212 RATE(240, 0), 213 RATE(360, 0), 214 RATE(480, 0), 215 RATE(540, 0), 216 }; 217 218 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = { 219 .band = NL80211_BAND_2GHZ, 220 .channels = brcms_2ghz_chantable, 221 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), 222 .bitrates = legacy_ratetable, 223 .n_bitrates = ARRAY_SIZE(legacy_ratetable), 224 .ht_cap = { 225 /* from include/linux/ieee80211.h */ 226 .cap = IEEE80211_HT_CAP_GRN_FLD | 227 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40, 228 .ht_supported = true, 229 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 230 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 231 .mcs = { 232 /* placeholders for now */ 233 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 234 .rx_highest = cpu_to_le16(500), 235 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 236 } 237 }; 238 239 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = { 240 .band = NL80211_BAND_5GHZ, 241 .channels = brcms_5ghz_nphy_chantable, 242 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), 243 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, 244 .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 245 BRCMS_LEGACY_5G_RATE_OFFSET, 246 .ht_cap = { 247 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | 248 IEEE80211_HT_CAP_SGI_40, 249 .ht_supported = true, 250 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 251 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 252 .mcs = { 253 /* placeholders for now */ 254 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 255 .rx_highest = cpu_to_le16(500), 256 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 257 } 258 }; 259 260 /* flags the given rate in rateset as requested */ 261 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) 262 { 263 u32 i; 264 265 for (i = 0; i < rs->count; i++) { 266 if (rate != (rs->rates[i] & 0x7f)) 267 continue; 268 269 if (is_br) 270 rs->rates[i] |= BRCMS_RATE_FLAG; 271 else 272 rs->rates[i] &= BRCMS_RATE_MASK; 273 return; 274 } 275 } 276 277 /* 278 * This function frees the WL per-device resources. 279 * 280 * This function frees resources owned by the WL device pointed to 281 * by the wl parameter. 282 * 283 * precondition: can both be called locked and unlocked 284 */ 285 static void brcms_free(struct brcms_info *wl) 286 { 287 struct brcms_timer *t, *next; 288 289 /* free ucode data */ 290 if (wl->fw.fw_cnt) 291 brcms_ucode_data_free(&wl->ucode); 292 if (wl->irq) 293 free_irq(wl->irq, wl); 294 295 /* kill dpc */ 296 tasklet_kill(&wl->tasklet); 297 298 if (wl->pub) { 299 brcms_debugfs_detach(wl->pub); 300 brcms_c_module_unregister(wl->pub, "linux", wl); 301 } 302 303 /* free common resources */ 304 if (wl->wlc) { 305 brcms_c_detach(wl->wlc); 306 wl->wlc = NULL; 307 wl->pub = NULL; 308 } 309 310 /* virtual interface deletion is deferred so we cannot spinwait */ 311 312 /* wait for all pending callbacks to complete */ 313 while (atomic_read(&wl->callbacks) > 0) 314 schedule(); 315 316 /* free timers */ 317 for (t = wl->timers; t; t = next) { 318 next = t->next; 319 #ifdef DEBUG 320 kfree(t->name); 321 #endif 322 kfree(t); 323 } 324 } 325 326 /* 327 * called from both kernel as from this kernel module (error flow on attach) 328 * precondition: perimeter lock is not acquired. 329 */ 330 static void brcms_remove(struct bcma_device *pdev) 331 { 332 struct ieee80211_hw *hw = bcma_get_drvdata(pdev); 333 struct brcms_info *wl = hw->priv; 334 335 if (wl->wlc) { 336 brcms_led_unregister(wl); 337 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); 338 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 339 ieee80211_unregister_hw(hw); 340 } 341 342 brcms_free(wl); 343 344 bcma_set_drvdata(pdev, NULL); 345 ieee80211_free_hw(hw); 346 } 347 348 /* 349 * Precondition: Since this function is called in brcms_pci_probe() context, 350 * no locking is required. 351 */ 352 static void brcms_release_fw(struct brcms_info *wl) 353 { 354 int i; 355 for (i = 0; i < MAX_FW_IMAGES; i++) { 356 release_firmware(wl->fw.fw_bin[i]); 357 release_firmware(wl->fw.fw_hdr[i]); 358 } 359 } 360 361 /* 362 * Precondition: Since this function is called in brcms_pci_probe() context, 363 * no locking is required. 364 */ 365 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) 366 { 367 int status; 368 struct device *device = &pdev->dev; 369 char fw_name[100]; 370 int i; 371 372 memset(&wl->fw, 0, sizeof(struct brcms_firmware)); 373 for (i = 0; i < MAX_FW_IMAGES; i++) { 374 if (brcms_firmwares[i] == NULL) 375 break; 376 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], 377 UCODE_LOADER_API_VER); 378 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); 379 if (status) { 380 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 381 KBUILD_MODNAME, fw_name); 382 return status; 383 } 384 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], 385 UCODE_LOADER_API_VER); 386 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); 387 if (status) { 388 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 389 KBUILD_MODNAME, fw_name); 390 return status; 391 } 392 wl->fw.hdr_num_entries[i] = 393 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); 394 } 395 wl->fw.fw_cnt = i; 396 status = brcms_ucode_data_init(wl, &wl->ucode); 397 brcms_release_fw(wl); 398 return status; 399 } 400 401 static void brcms_ops_tx(struct ieee80211_hw *hw, 402 struct ieee80211_tx_control *control, 403 struct sk_buff *skb) 404 { 405 struct brcms_info *wl = hw->priv; 406 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 407 408 spin_lock_bh(&wl->lock); 409 if (!wl->pub->up) { 410 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); 411 kfree_skb(skb); 412 goto done; 413 } 414 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) 415 tx_info->rate_driver_data[0] = control->sta; 416 done: 417 spin_unlock_bh(&wl->lock); 418 } 419 420 static int brcms_ops_start(struct ieee80211_hw *hw) 421 { 422 struct brcms_info *wl = hw->priv; 423 bool blocked; 424 int err; 425 426 if (!wl->ucode.bcm43xx_bomminor) { 427 err = brcms_request_fw(wl, wl->wlc->hw->d11core); 428 if (err) 429 return -ENOENT; 430 } 431 432 ieee80211_wake_queues(hw); 433 spin_lock_bh(&wl->lock); 434 blocked = brcms_rfkill_set_hw_state(wl); 435 spin_unlock_bh(&wl->lock); 436 if (!blocked) 437 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 438 439 spin_lock_bh(&wl->lock); 440 /* avoid acknowledging frames before a non-monitor device is added */ 441 wl->mute_tx = true; 442 443 if (!wl->pub->up) 444 if (!blocked) 445 err = brcms_up(wl); 446 else 447 err = -ERFKILL; 448 else 449 err = -ENODEV; 450 spin_unlock_bh(&wl->lock); 451 452 if (err != 0) 453 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", 454 __func__, err); 455 456 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); 457 return err; 458 } 459 460 static void brcms_ops_stop(struct ieee80211_hw *hw) 461 { 462 struct brcms_info *wl = hw->priv; 463 int status; 464 465 ieee80211_stop_queues(hw); 466 467 if (wl->wlc == NULL) 468 return; 469 470 spin_lock_bh(&wl->lock); 471 status = brcms_c_chipmatch(wl->wlc->hw->d11core); 472 spin_unlock_bh(&wl->lock); 473 if (!status) { 474 brcms_err(wl->wlc->hw->d11core, 475 "wl: brcms_ops_stop: chipmatch failed\n"); 476 return; 477 } 478 479 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); 480 481 /* put driver in down state */ 482 spin_lock_bh(&wl->lock); 483 brcms_down(wl); 484 spin_unlock_bh(&wl->lock); 485 } 486 487 static int 488 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 489 { 490 struct brcms_info *wl = hw->priv; 491 492 /* Just STA, AP and ADHOC for now */ 493 if (vif->type != NL80211_IFTYPE_STATION && 494 vif->type != NL80211_IFTYPE_AP && 495 vif->type != NL80211_IFTYPE_ADHOC) { 496 brcms_err(wl->wlc->hw->d11core, 497 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", 498 __func__, vif->type); 499 return -EOPNOTSUPP; 500 } 501 502 spin_lock_bh(&wl->lock); 503 wl->wlc->vif = vif; 504 wl->mute_tx = false; 505 brcms_c_mute(wl->wlc, false); 506 if (vif->type == NL80211_IFTYPE_STATION) 507 brcms_c_start_station(wl->wlc, vif->addr); 508 else if (vif->type == NL80211_IFTYPE_AP) 509 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, 510 vif->cfg.ssid, vif->cfg.ssid_len); 511 else if (vif->type == NL80211_IFTYPE_ADHOC) 512 brcms_c_start_adhoc(wl->wlc, vif->addr); 513 spin_unlock_bh(&wl->lock); 514 515 return 0; 516 } 517 518 static void 519 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 520 { 521 struct brcms_info *wl = hw->priv; 522 523 spin_lock_bh(&wl->lock); 524 wl->wlc->vif = NULL; 525 spin_unlock_bh(&wl->lock); 526 } 527 528 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed) 529 { 530 struct ieee80211_conf *conf = &hw->conf; 531 struct brcms_info *wl = hw->priv; 532 struct bcma_device *core = wl->wlc->hw->d11core; 533 int err = 0; 534 int new_int; 535 536 spin_lock_bh(&wl->lock); 537 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { 538 brcms_c_set_beacon_listen_interval(wl->wlc, 539 conf->listen_interval); 540 } 541 if (changed & IEEE80211_CONF_CHANGE_MONITOR) 542 brcms_dbg_info(core, "%s: change monitor mode: %s\n", 543 __func__, conf->flags & IEEE80211_CONF_MONITOR ? 544 "true" : "false"); 545 if (changed & IEEE80211_CONF_CHANGE_PS) 546 brcms_err(core, "%s: change power-save mode: %s (implement)\n", 547 __func__, conf->flags & IEEE80211_CONF_PS ? 548 "true" : "false"); 549 550 if (changed & IEEE80211_CONF_CHANGE_POWER) { 551 err = brcms_c_set_tx_power(wl->wlc, conf->power_level); 552 if (err < 0) { 553 brcms_err(core, "%s: Error setting power_level\n", 554 __func__); 555 goto config_out; 556 } 557 new_int = brcms_c_get_tx_power(wl->wlc); 558 if (new_int != conf->power_level) 559 brcms_err(core, 560 "%s: Power level req != actual, %d %d\n", 561 __func__, conf->power_level, 562 new_int); 563 } 564 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 565 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 || 566 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 567 err = brcms_c_set_channel(wl->wlc, 568 conf->chandef.chan->hw_value); 569 else 570 err = -ENOTSUPP; 571 } 572 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) 573 err = brcms_c_set_rate_limit(wl->wlc, 574 conf->short_frame_max_tx_count, 575 conf->long_frame_max_tx_count); 576 577 config_out: 578 spin_unlock_bh(&wl->lock); 579 return err; 580 } 581 582 static void 583 brcms_ops_bss_info_changed(struct ieee80211_hw *hw, 584 struct ieee80211_vif *vif, 585 struct ieee80211_bss_conf *info, u64 changed) 586 { 587 struct brcms_info *wl = hw->priv; 588 struct bcma_device *core = wl->wlc->hw->d11core; 589 590 if (changed & BSS_CHANGED_ASSOC) { 591 /* association status changed (associated/disassociated) 592 * also implies a change in the AID. 593 */ 594 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME, 595 __func__, vif->cfg.assoc ? "" : "dis"); 596 spin_lock_bh(&wl->lock); 597 brcms_c_associate_upd(wl->wlc, vif->cfg.assoc); 598 spin_unlock_bh(&wl->lock); 599 } 600 if (changed & BSS_CHANGED_ERP_SLOT) { 601 s8 val; 602 603 /* slot timing changed */ 604 if (info->use_short_slot) 605 val = 1; 606 else 607 val = 0; 608 spin_lock_bh(&wl->lock); 609 brcms_c_set_shortslot_override(wl->wlc, val); 610 spin_unlock_bh(&wl->lock); 611 } 612 613 if (changed & BSS_CHANGED_HT) { 614 /* 802.11n parameters changed */ 615 u16 mode = info->ht_operation_mode; 616 617 spin_lock_bh(&wl->lock); 618 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG, 619 mode & IEEE80211_HT_OP_MODE_PROTECTION); 620 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF, 621 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); 622 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS, 623 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); 624 spin_unlock_bh(&wl->lock); 625 } 626 if (changed & BSS_CHANGED_BASIC_RATES) { 627 struct ieee80211_supported_band *bi; 628 u32 br_mask, i; 629 u16 rate; 630 struct brcm_rateset rs; 631 int error; 632 633 /* retrieve the current rates */ 634 spin_lock_bh(&wl->lock); 635 brcms_c_get_current_rateset(wl->wlc, &rs); 636 spin_unlock_bh(&wl->lock); 637 638 br_mask = info->basic_rates; 639 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)]; 640 for (i = 0; i < bi->n_bitrates; i++) { 641 /* convert to internal rate value */ 642 rate = (bi->bitrates[i].bitrate << 1) / 10; 643 644 /* set/clear basic rate flag */ 645 brcms_set_basic_rate(&rs, rate, br_mask & 1); 646 br_mask >>= 1; 647 } 648 649 /* update the rate set */ 650 spin_lock_bh(&wl->lock); 651 error = brcms_c_set_rateset(wl->wlc, &rs); 652 spin_unlock_bh(&wl->lock); 653 if (error) 654 brcms_err(core, "changing basic rates failed: %d\n", 655 error); 656 } 657 if (changed & BSS_CHANGED_BEACON_INT) { 658 /* Beacon interval changed */ 659 spin_lock_bh(&wl->lock); 660 brcms_c_set_beacon_period(wl->wlc, info->beacon_int); 661 spin_unlock_bh(&wl->lock); 662 } 663 if (changed & BSS_CHANGED_BSSID) { 664 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 665 spin_lock_bh(&wl->lock); 666 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); 667 spin_unlock_bh(&wl->lock); 668 } 669 if (changed & BSS_CHANGED_SSID) { 670 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 671 spin_lock_bh(&wl->lock); 672 brcms_c_set_ssid(wl->wlc, vif->cfg.ssid, vif->cfg.ssid_len); 673 spin_unlock_bh(&wl->lock); 674 } 675 if (changed & BSS_CHANGED_BEACON) { 676 /* Beacon data changed, retrieve new beacon (beaconing modes) */ 677 struct sk_buff *beacon; 678 u16 tim_offset = 0; 679 680 spin_lock_bh(&wl->lock); 681 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL, 0); 682 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 683 info->dtim_period); 684 spin_unlock_bh(&wl->lock); 685 } 686 687 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 688 struct sk_buff *probe_resp; 689 690 spin_lock_bh(&wl->lock); 691 probe_resp = ieee80211_proberesp_get(hw, vif); 692 brcms_c_set_new_probe_resp(wl->wlc, probe_resp); 693 spin_unlock_bh(&wl->lock); 694 } 695 696 if (changed & BSS_CHANGED_BEACON_ENABLED) { 697 /* Beaconing should be enabled/disabled (beaconing modes) */ 698 brcms_err(core, "%s: Beacon enabled: %s\n", __func__, 699 info->enable_beacon ? "true" : "false"); 700 if (info->enable_beacon && 701 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) { 702 brcms_c_enable_probe_resp(wl->wlc, true); 703 } else { 704 brcms_c_enable_probe_resp(wl->wlc, false); 705 } 706 } 707 708 if (changed & BSS_CHANGED_CQM) { 709 /* Connection quality monitor config changed */ 710 brcms_err(core, "%s: cqm change: threshold %d, hys %d " 711 " (implement)\n", __func__, info->cqm_rssi_thold, 712 info->cqm_rssi_hyst); 713 } 714 715 if (changed & BSS_CHANGED_IBSS) { 716 /* IBSS join status changed */ 717 brcms_err(core, "%s: IBSS joined: %s (implement)\n", 718 __func__, vif->cfg.ibss_joined ? "true" : "false"); 719 } 720 721 if (changed & BSS_CHANGED_ARP_FILTER) { 722 /* Hardware ARP filter address list or state changed */ 723 brcms_err(core, "%s: arp filtering: %d addresses" 724 " (implement)\n", __func__, vif->cfg.arp_addr_cnt); 725 } 726 727 if (changed & BSS_CHANGED_QOS) { 728 /* 729 * QoS for this association was enabled/disabled. 730 * Note that it is only ever disabled for station mode. 731 */ 732 brcms_err(core, "%s: qos enabled: %s (implement)\n", 733 __func__, info->qos ? "true" : "false"); 734 } 735 return; 736 } 737 738 static void 739 brcms_ops_configure_filter(struct ieee80211_hw *hw, 740 unsigned int changed_flags, 741 unsigned int *total_flags, u64 multicast) 742 { 743 struct brcms_info *wl = hw->priv; 744 struct bcma_device *core = wl->wlc->hw->d11core; 745 746 changed_flags &= MAC_FILTERS; 747 *total_flags &= MAC_FILTERS; 748 749 if (changed_flags & FIF_ALLMULTI) 750 brcms_dbg_info(core, "FIF_ALLMULTI\n"); 751 if (changed_flags & FIF_FCSFAIL) 752 brcms_dbg_info(core, "FIF_FCSFAIL\n"); 753 if (changed_flags & FIF_CONTROL) 754 brcms_dbg_info(core, "FIF_CONTROL\n"); 755 if (changed_flags & FIF_OTHER_BSS) 756 brcms_dbg_info(core, "FIF_OTHER_BSS\n"); 757 if (changed_flags & FIF_PSPOLL) 758 brcms_dbg_info(core, "FIF_PSPOLL\n"); 759 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) 760 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n"); 761 762 spin_lock_bh(&wl->lock); 763 brcms_c_mac_promisc(wl->wlc, *total_flags); 764 spin_unlock_bh(&wl->lock); 765 return; 766 } 767 768 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw, 769 struct ieee80211_vif *vif, 770 const u8 *mac_addr) 771 { 772 struct brcms_info *wl = hw->priv; 773 spin_lock_bh(&wl->lock); 774 brcms_c_scan_start(wl->wlc); 775 spin_unlock_bh(&wl->lock); 776 return; 777 } 778 779 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw, 780 struct ieee80211_vif *vif) 781 { 782 struct brcms_info *wl = hw->priv; 783 spin_lock_bh(&wl->lock); 784 brcms_c_scan_stop(wl->wlc); 785 spin_unlock_bh(&wl->lock); 786 return; 787 } 788 789 static int 790 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 791 unsigned int link_id, u16 queue, 792 const struct ieee80211_tx_queue_params *params) 793 { 794 struct brcms_info *wl = hw->priv; 795 796 spin_lock_bh(&wl->lock); 797 brcms_c_wme_setparams(wl->wlc, queue, params, true); 798 spin_unlock_bh(&wl->lock); 799 800 return 0; 801 } 802 803 static int 804 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 805 struct ieee80211_sta *sta) 806 { 807 struct brcms_info *wl = hw->priv; 808 struct scb *scb = &wl->wlc->pri_scb; 809 810 brcms_c_init_scb(scb); 811 812 wl->pub->global_ampdu = &(scb->scb_ampdu); 813 wl->pub->global_ampdu->scb = scb; 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 u8 buf_size = params->buf_size; 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. 'ampdu_factor' gives maximum 867 * AMPDU size. 868 */ 869 spin_lock_bh(&wl->lock); 870 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size, 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__, drop ? "true" : "false"); 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 .tx = brcms_ops_tx, 965 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 966 .start = brcms_ops_start, 967 .stop = brcms_ops_stop, 968 .add_interface = brcms_ops_add_interface, 969 .remove_interface = brcms_ops_remove_interface, 970 .config = brcms_ops_config, 971 .bss_info_changed = brcms_ops_bss_info_changed, 972 .configure_filter = brcms_ops_configure_filter, 973 .sw_scan_start = brcms_ops_sw_scan_start, 974 .sw_scan_complete = brcms_ops_sw_scan_complete, 975 .conf_tx = brcms_ops_conf_tx, 976 .sta_add = brcms_ops_sta_add, 977 .ampdu_action = brcms_ops_ampdu_action, 978 .rfkill_poll = brcms_ops_rfkill_poll, 979 .flush = brcms_ops_flush, 980 .get_tsf = brcms_ops_get_tsf, 981 .set_tsf = brcms_ops_set_tsf, 982 .set_tim = brcms_ops_beacon_set_tim, 983 }; 984 985 void brcms_dpc(struct tasklet_struct *t) 986 { 987 struct brcms_info *wl; 988 989 wl = from_tasklet(wl, t, tasklet); 990 991 spin_lock_bh(&wl->lock); 992 993 /* call the common second level interrupt handler */ 994 if (wl->pub->up) { 995 if (wl->resched) { 996 unsigned long flags; 997 998 spin_lock_irqsave(&wl->isr_lock, flags); 999 brcms_c_intrsupd(wl->wlc); 1000 spin_unlock_irqrestore(&wl->isr_lock, flags); 1001 } 1002 1003 wl->resched = brcms_c_dpc(wl->wlc, true); 1004 } 1005 1006 /* brcms_c_dpc() may bring the driver down */ 1007 if (!wl->pub->up) 1008 goto done; 1009 1010 /* re-schedule dpc */ 1011 if (wl->resched) 1012 tasklet_schedule(&wl->tasklet); 1013 else 1014 /* re-enable interrupts */ 1015 brcms_intrson(wl); 1016 1017 done: 1018 spin_unlock_bh(&wl->lock); 1019 wake_up(&wl->tx_flush_wq); 1020 } 1021 1022 static irqreturn_t brcms_isr(int irq, void *dev_id) 1023 { 1024 struct brcms_info *wl; 1025 irqreturn_t ret = IRQ_NONE; 1026 1027 wl = (struct brcms_info *) dev_id; 1028 1029 spin_lock(&wl->isr_lock); 1030 1031 /* call common first level interrupt handler */ 1032 if (brcms_c_isr(wl->wlc)) { 1033 /* schedule second level handler */ 1034 tasklet_schedule(&wl->tasklet); 1035 ret = IRQ_HANDLED; 1036 } 1037 1038 spin_unlock(&wl->isr_lock); 1039 1040 return ret; 1041 } 1042 1043 /* 1044 * is called in brcms_pci_probe() context, therefore no locking required. 1045 */ 1046 static int ieee_hw_rate_init(struct ieee80211_hw *hw) 1047 { 1048 struct brcms_info *wl = hw->priv; 1049 struct brcms_c_info *wlc = wl->wlc; 1050 struct ieee80211_supported_band *band; 1051 u16 phy_type; 1052 1053 hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; 1054 hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; 1055 1056 phy_type = brcms_c_get_phy_type(wl->wlc, 0); 1057 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1058 band = &wlc->bandstate[BAND_2G_INDEX]->band; 1059 *band = brcms_band_2GHz_nphy_template; 1060 if (phy_type == PHY_TYPE_LCN) { 1061 /* Single stream */ 1062 band->ht_cap.mcs.rx_mask[1] = 0; 1063 band->ht_cap.mcs.rx_highest = cpu_to_le16(72); 1064 } 1065 hw->wiphy->bands[NL80211_BAND_2GHZ] = band; 1066 } else { 1067 return -EPERM; 1068 } 1069 1070 /* Assume all bands use the same phy. True for 11n devices. */ 1071 if (wl->pub->_nbands > 1) { 1072 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1073 band = &wlc->bandstate[BAND_5G_INDEX]->band; 1074 *band = brcms_band_5GHz_nphy_template; 1075 hw->wiphy->bands[NL80211_BAND_5GHZ] = band; 1076 } else { 1077 return -EPERM; 1078 } 1079 } 1080 return 0; 1081 } 1082 1083 /* 1084 * is called in brcms_pci_probe() context, therefore no locking required. 1085 */ 1086 static int ieee_hw_init(struct ieee80211_hw *hw) 1087 { 1088 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 1089 ieee80211_hw_set(hw, SIGNAL_DBM); 1090 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 1091 1092 hw->extra_tx_headroom = brcms_c_get_header_len(); 1093 hw->queues = N_TX_QUEUES; 1094 hw->max_rates = 2; /* Primary rate and 1 fallback rate */ 1095 1096 /* channel change time is dependent on chip and band */ 1097 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1098 BIT(NL80211_IFTYPE_AP) | 1099 BIT(NL80211_IFTYPE_ADHOC); 1100 1101 /* 1102 * deactivate sending probe responses by ucude, because this will 1103 * cause problems when WPS is used. 1104 * 1105 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 1106 */ 1107 1108 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1109 1110 hw->rate_control_algorithm = "minstrel_ht"; 1111 1112 hw->sta_data_size = 0; 1113 return ieee_hw_rate_init(hw); 1114 } 1115 1116 /* 1117 * attach to the WL device. 1118 * 1119 * Attach to the WL device identified by vendor and device parameters. 1120 * regs is a host accessible memory address pointing to WL device registers. 1121 * 1122 * is called in brcms_bcma_probe() context, therefore no locking required. 1123 */ 1124 static struct brcms_info *brcms_attach(struct bcma_device *pdev) 1125 { 1126 struct brcms_info *wl = NULL; 1127 int unit, err; 1128 struct ieee80211_hw *hw; 1129 u8 perm[ETH_ALEN]; 1130 1131 unit = n_adapters_found; 1132 err = 0; 1133 1134 if (unit < 0) 1135 return NULL; 1136 1137 /* allocate private info */ 1138 hw = bcma_get_drvdata(pdev); 1139 if (hw != NULL) 1140 wl = hw->priv; 1141 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) 1142 return NULL; 1143 wl->wiphy = hw->wiphy; 1144 1145 atomic_set(&wl->callbacks, 0); 1146 1147 init_waitqueue_head(&wl->tx_flush_wq); 1148 1149 /* setup the bottom half handler */ 1150 tasklet_setup(&wl->tasklet, brcms_dpc); 1151 1152 spin_lock_init(&wl->lock); 1153 spin_lock_init(&wl->isr_lock); 1154 1155 /* common load-time initialization */ 1156 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); 1157 if (!wl->wlc) { 1158 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", 1159 KBUILD_MODNAME, err); 1160 goto fail; 1161 } 1162 wl->pub = brcms_c_pub(wl->wlc); 1163 1164 wl->pub->ieee_hw = hw; 1165 1166 /* register our interrupt handler */ 1167 if (request_irq(pdev->irq, brcms_isr, 1168 IRQF_SHARED, KBUILD_MODNAME, wl)) { 1169 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); 1170 goto fail; 1171 } 1172 wl->irq = pdev->irq; 1173 1174 /* register module */ 1175 brcms_c_module_register(wl->pub, "linux", wl, NULL); 1176 1177 if (ieee_hw_init(hw)) { 1178 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, 1179 __func__); 1180 goto fail; 1181 } 1182 1183 brcms_c_regd_init(wl->wlc); 1184 1185 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); 1186 if (WARN_ON(!is_valid_ether_addr(perm))) 1187 goto fail; 1188 SET_IEEE80211_PERM_ADDR(hw, perm); 1189 1190 err = ieee80211_register_hw(hw); 1191 if (err) 1192 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" 1193 "%d\n", __func__, err); 1194 1195 if (wl->pub->srom_ccode[0] && 1196 regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) 1197 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); 1198 1199 brcms_debugfs_attach(wl->pub); 1200 brcms_debugfs_create_files(wl->pub); 1201 n_adapters_found++; 1202 return wl; 1203 1204 fail: 1205 brcms_free(wl); 1206 return NULL; 1207 } 1208 1209 1210 1211 /* 1212 * determines if a device is a WL device, and if so, attaches it. 1213 * 1214 * This function determines if a device pointed to by pdev is a WL device, 1215 * and if so, performs a brcms_attach() on it. 1216 * 1217 * Perimeter lock is initialized in the course of this function. 1218 */ 1219 static int brcms_bcma_probe(struct bcma_device *pdev) 1220 { 1221 struct brcms_info *wl; 1222 struct ieee80211_hw *hw; 1223 int ret; 1224 1225 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", 1226 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, 1227 pdev->irq); 1228 1229 if ((pdev->id.manuf != BCMA_MANUF_BCM) || 1230 (pdev->id.id != BCMA_CORE_80211)) 1231 return -ENODEV; 1232 1233 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); 1234 if (!hw) { 1235 pr_err("%s: ieee80211_alloc_hw failed\n", __func__); 1236 return -ENOMEM; 1237 } 1238 1239 SET_IEEE80211_DEV(hw, &pdev->dev); 1240 1241 bcma_set_drvdata(pdev, hw); 1242 1243 memset(hw->priv, 0, sizeof(*wl)); 1244 1245 wl = brcms_attach(pdev); 1246 if (!wl) { 1247 pr_err("%s: brcms_attach failed!\n", __func__); 1248 ret = -ENODEV; 1249 goto err_free_ieee80211; 1250 } 1251 brcms_led_register(wl); 1252 1253 return 0; 1254 1255 err_free_ieee80211: 1256 ieee80211_free_hw(hw); 1257 return ret; 1258 } 1259 1260 static int brcms_suspend(struct bcma_device *pdev) 1261 { 1262 struct brcms_info *wl; 1263 struct ieee80211_hw *hw; 1264 1265 hw = bcma_get_drvdata(pdev); 1266 wl = hw->priv; 1267 if (!wl) { 1268 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, 1269 __func__); 1270 return -ENODEV; 1271 } 1272 1273 /* only need to flag hw is down for proper resume */ 1274 spin_lock_bh(&wl->lock); 1275 wl->pub->hw_up = false; 1276 spin_unlock_bh(&wl->lock); 1277 1278 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); 1279 1280 return 0; 1281 } 1282 1283 static int brcms_resume(struct bcma_device *pdev) 1284 { 1285 return 0; 1286 } 1287 1288 static struct bcma_driver brcms_bcma_driver = { 1289 .name = KBUILD_MODNAME, 1290 .probe = brcms_bcma_probe, 1291 .suspend = brcms_suspend, 1292 .resume = brcms_resume, 1293 .remove = brcms_remove, 1294 .id_table = brcms_coreid_table, 1295 }; 1296 1297 /* 1298 * This is the main entry point for the brcmsmac driver. 1299 * 1300 * This function is scheduled upon module initialization and 1301 * does the driver registration, which result in brcms_bcma_probe() 1302 * call resulting in the driver bringup. 1303 */ 1304 static void brcms_driver_init(struct work_struct *work) 1305 { 1306 int error; 1307 1308 error = bcma_driver_register(&brcms_bcma_driver); 1309 if (error) 1310 pr_err("%s: register returned %d\n", __func__, error); 1311 } 1312 1313 static DECLARE_WORK(brcms_driver_work, brcms_driver_init); 1314 1315 static int __init brcms_module_init(void) 1316 { 1317 brcms_debugfs_init(); 1318 if (!schedule_work(&brcms_driver_work)) 1319 return -EBUSY; 1320 1321 return 0; 1322 } 1323 1324 /* 1325 * This function unloads the brcmsmac driver from the system. 1326 * 1327 * This function unconditionally unloads the brcmsmac driver module from the 1328 * system. 1329 * 1330 */ 1331 static void __exit brcms_module_exit(void) 1332 { 1333 cancel_work_sync(&brcms_driver_work); 1334 bcma_driver_unregister(&brcms_bcma_driver); 1335 brcms_debugfs_exit(); 1336 } 1337 1338 module_init(brcms_module_init); 1339 module_exit(brcms_module_exit); 1340 1341 /* 1342 * precondition: perimeter lock has been acquired 1343 */ 1344 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, 1345 bool state, int prio) 1346 { 1347 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); 1348 } 1349 1350 /* 1351 * precondition: perimeter lock has been acquired 1352 */ 1353 void brcms_init(struct brcms_info *wl) 1354 { 1355 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", 1356 wl->pub->unit); 1357 brcms_reset(wl); 1358 brcms_c_init(wl->wlc, wl->mute_tx); 1359 } 1360 1361 /* 1362 * precondition: perimeter lock has been acquired 1363 */ 1364 uint brcms_reset(struct brcms_info *wl) 1365 { 1366 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); 1367 brcms_c_reset(wl->wlc); 1368 1369 /* dpc will not be rescheduled */ 1370 wl->resched = false; 1371 1372 /* inform publicly that interface is down */ 1373 wl->pub->up = false; 1374 1375 return 0; 1376 } 1377 1378 void brcms_fatal_error(struct brcms_info *wl) 1379 { 1380 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", 1381 wl->wlc->pub->unit); 1382 brcms_reset(wl); 1383 ieee80211_restart_hw(wl->pub->ieee_hw); 1384 } 1385 1386 /* 1387 * These are interrupt on/off entry points. Disable interrupts 1388 * during interrupt state transition. 1389 */ 1390 void brcms_intrson(struct brcms_info *wl) 1391 { 1392 unsigned long flags; 1393 1394 spin_lock_irqsave(&wl->isr_lock, flags); 1395 brcms_c_intrson(wl->wlc); 1396 spin_unlock_irqrestore(&wl->isr_lock, flags); 1397 } 1398 1399 u32 brcms_intrsoff(struct brcms_info *wl) 1400 { 1401 unsigned long flags; 1402 u32 status; 1403 1404 spin_lock_irqsave(&wl->isr_lock, flags); 1405 status = brcms_c_intrsoff(wl->wlc); 1406 spin_unlock_irqrestore(&wl->isr_lock, flags); 1407 return status; 1408 } 1409 1410 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) 1411 { 1412 unsigned long flags; 1413 1414 spin_lock_irqsave(&wl->isr_lock, flags); 1415 brcms_c_intrsrestore(wl->wlc, macintmask); 1416 spin_unlock_irqrestore(&wl->isr_lock, flags); 1417 } 1418 1419 /* 1420 * precondition: perimeter lock has been acquired 1421 */ 1422 int brcms_up(struct brcms_info *wl) 1423 { 1424 int error = 0; 1425 1426 if (wl->pub->up) 1427 return 0; 1428 1429 error = brcms_c_up(wl->wlc); 1430 1431 return error; 1432 } 1433 1434 /* 1435 * precondition: perimeter lock has been acquired 1436 */ 1437 void brcms_down(struct brcms_info *wl) 1438 __must_hold(&wl->lock) 1439 { 1440 uint callbacks, ret_val = 0; 1441 1442 /* call common down function */ 1443 ret_val = brcms_c_down(wl->wlc); 1444 callbacks = atomic_read(&wl->callbacks) - ret_val; 1445 1446 /* wait for down callbacks to complete */ 1447 spin_unlock_bh(&wl->lock); 1448 1449 /* For HIGH_only driver, it's important to actually schedule other work, 1450 * not just spin wait since everything runs at schedule level 1451 */ 1452 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); 1453 1454 spin_lock_bh(&wl->lock); 1455 } 1456 1457 /* 1458 * precondition: perimeter lock is not acquired 1459 */ 1460 static void _brcms_timer(struct work_struct *work) 1461 { 1462 struct brcms_timer *t = container_of(work, struct brcms_timer, 1463 dly_wrk.work); 1464 1465 spin_lock_bh(&t->wl->lock); 1466 1467 if (t->set) { 1468 if (t->periodic) { 1469 atomic_inc(&t->wl->callbacks); 1470 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, 1471 &t->dly_wrk, 1472 msecs_to_jiffies(t->ms)); 1473 } else { 1474 t->set = false; 1475 } 1476 1477 t->fn(t->arg); 1478 } 1479 1480 atomic_dec(&t->wl->callbacks); 1481 1482 spin_unlock_bh(&t->wl->lock); 1483 } 1484 1485 /* 1486 * Adds a timer to the list. Caller supplies a timer function. 1487 * Is called from wlc. 1488 * 1489 * precondition: perimeter lock has been acquired 1490 */ 1491 struct brcms_timer *brcms_init_timer(struct brcms_info *wl, 1492 void (*fn) (void *arg), 1493 void *arg, const char *name) 1494 { 1495 struct brcms_timer *t; 1496 1497 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC); 1498 if (!t) 1499 return NULL; 1500 1501 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); 1502 t->wl = wl; 1503 t->fn = fn; 1504 t->arg = arg; 1505 t->next = wl->timers; 1506 wl->timers = t; 1507 1508 #ifdef DEBUG 1509 t->name = kstrdup(name, GFP_ATOMIC); 1510 #endif 1511 1512 return t; 1513 } 1514 1515 /* 1516 * adds only the kernel timer since it's going to be more accurate 1517 * as well as it's easier to make it periodic 1518 * 1519 * precondition: perimeter lock has been acquired 1520 */ 1521 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) 1522 { 1523 struct ieee80211_hw *hw = t->wl->pub->ieee_hw; 1524 1525 #ifdef DEBUG 1526 if (t->set) 1527 brcms_dbg_info(t->wl->wlc->hw->d11core, 1528 "%s: Already set. Name: %s, per %d\n", 1529 __func__, t->name, periodic); 1530 #endif 1531 t->ms = ms; 1532 t->periodic = (bool) periodic; 1533 if (!t->set) { 1534 t->set = true; 1535 atomic_inc(&t->wl->callbacks); 1536 } 1537 1538 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); 1539 } 1540 1541 /* 1542 * return true if timer successfully deleted, false if still pending 1543 * 1544 * precondition: perimeter lock has been acquired 1545 */ 1546 bool brcms_del_timer(struct brcms_timer *t) 1547 { 1548 if (t->set) { 1549 t->set = false; 1550 if (!cancel_delayed_work(&t->dly_wrk)) 1551 return false; 1552 1553 atomic_dec(&t->wl->callbacks); 1554 } 1555 1556 return true; 1557 } 1558 1559 /* 1560 * precondition: perimeter lock has been acquired 1561 */ 1562 void brcms_free_timer(struct brcms_timer *t) 1563 { 1564 struct brcms_info *wl = t->wl; 1565 struct brcms_timer *tmp; 1566 1567 /* delete the timer in case it is active */ 1568 brcms_del_timer(t); 1569 1570 if (wl->timers == t) { 1571 wl->timers = wl->timers->next; 1572 #ifdef DEBUG 1573 kfree(t->name); 1574 #endif 1575 kfree(t); 1576 return; 1577 1578 } 1579 1580 tmp = wl->timers; 1581 while (tmp) { 1582 if (tmp->next == t) { 1583 tmp->next = t->next; 1584 #ifdef DEBUG 1585 kfree(t->name); 1586 #endif 1587 kfree(t); 1588 return; 1589 } 1590 tmp = tmp->next; 1591 } 1592 1593 } 1594 1595 /* 1596 * precondition: no locking required 1597 */ 1598 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) 1599 { 1600 int i, entry; 1601 const u8 *pdata; 1602 struct firmware_hdr *hdr; 1603 for (i = 0; i < wl->fw.fw_cnt; i++) { 1604 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1605 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1606 entry++, hdr++) { 1607 u32 len = le32_to_cpu(hdr->len); 1608 if (le32_to_cpu(hdr->idx) == idx) { 1609 pdata = wl->fw.fw_bin[i]->data + 1610 le32_to_cpu(hdr->offset); 1611 *pbuf = kvmalloc(len, GFP_KERNEL); 1612 if (*pbuf == NULL) 1613 goto fail; 1614 memcpy(*pbuf, pdata, len); 1615 return 0; 1616 } 1617 } 1618 } 1619 brcms_err(wl->wlc->hw->d11core, 1620 "ERROR: ucode buf tag:%d can not be found!\n", idx); 1621 *pbuf = NULL; 1622 fail: 1623 return -ENODATA; 1624 } 1625 1626 /* 1627 * Precondition: Since this function is called in brcms_bcma_probe() context, 1628 * no locking is required. 1629 */ 1630 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) 1631 { 1632 int i, entry; 1633 const u8 *pdata; 1634 struct firmware_hdr *hdr; 1635 for (i = 0; i < wl->fw.fw_cnt; i++) { 1636 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1637 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1638 entry++, hdr++) { 1639 if (le32_to_cpu(hdr->idx) == idx) { 1640 pdata = wl->fw.fw_bin[i]->data + 1641 le32_to_cpu(hdr->offset); 1642 if (le32_to_cpu(hdr->len) != 4) { 1643 brcms_err(wl->wlc->hw->d11core, 1644 "ERROR: fw hdr len\n"); 1645 return -ENOMSG; 1646 } 1647 *n_bytes = le32_to_cpu(*((__le32 *) pdata)); 1648 return 0; 1649 } 1650 } 1651 } 1652 brcms_err(wl->wlc->hw->d11core, 1653 "ERROR: ucode tag:%d can not be found!\n", idx); 1654 return -ENOMSG; 1655 } 1656 1657 /* 1658 * precondition: can both be called locked and unlocked 1659 */ 1660 void brcms_ucode_free_buf(void *p) 1661 { 1662 kvfree(p); 1663 } 1664 1665 /* 1666 * checks validity of all firmware images loaded from user space 1667 * 1668 * Precondition: Since this function is called in brcms_bcma_probe() context, 1669 * no locking is required. 1670 */ 1671 int brcms_check_firmwares(struct brcms_info *wl) 1672 { 1673 int i; 1674 int entry; 1675 int rc = 0; 1676 const struct firmware *fw; 1677 const struct firmware *fw_hdr; 1678 struct firmware_hdr *ucode_hdr; 1679 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) { 1680 fw = wl->fw.fw_bin[i]; 1681 fw_hdr = wl->fw.fw_hdr[i]; 1682 if (fw == NULL && fw_hdr == NULL) { 1683 break; 1684 } else if (fw == NULL || fw_hdr == NULL) { 1685 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", 1686 __func__); 1687 rc = -EBADF; 1688 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) { 1689 wiphy_err(wl->wiphy, "%s: non integral fw hdr file " 1690 "size %zu/%zu\n", __func__, fw_hdr->size, 1691 sizeof(struct firmware_hdr)); 1692 rc = -EBADF; 1693 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { 1694 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n", 1695 __func__, fw->size); 1696 rc = -EBADF; 1697 } else { 1698 /* check if ucode section overruns firmware image */ 1699 ucode_hdr = (struct firmware_hdr *)fw_hdr->data; 1700 for (entry = 0; entry < wl->fw.hdr_num_entries[i] && 1701 !rc; entry++, ucode_hdr++) { 1702 if (le32_to_cpu(ucode_hdr->offset) + 1703 le32_to_cpu(ucode_hdr->len) > 1704 fw->size) { 1705 wiphy_err(wl->wiphy, 1706 "%s: conflicting bin/hdr\n", 1707 __func__); 1708 rc = -EBADF; 1709 } 1710 } 1711 } 1712 } 1713 if (rc == 0 && wl->fw.fw_cnt != i) { 1714 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, 1715 wl->fw.fw_cnt); 1716 rc = -EBADF; 1717 } 1718 return rc; 1719 } 1720 1721 /* 1722 * precondition: perimeter lock has been acquired 1723 */ 1724 bool brcms_rfkill_set_hw_state(struct brcms_info *wl) 1725 __must_hold(&wl->lock) 1726 { 1727 bool blocked = brcms_c_check_radio_disabled(wl->wlc); 1728 1729 spin_unlock_bh(&wl->lock); 1730 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 1731 if (blocked) 1732 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); 1733 spin_lock_bh(&wl->lock); 1734 return blocked; 1735 } 1736