1 /* 2 * Copyright (c) 2010 Broadcom Corporation 3 * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de> 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #define __UNDEF_NO_VERSION__ 19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 20 21 #include <linux/etherdevice.h> 22 #include <linux/sched.h> 23 #include <linux/firmware.h> 24 #include <linux/interrupt.h> 25 #include <linux/module.h> 26 #include <linux/bcma/bcma.h> 27 #include <net/mac80211.h> 28 #include <defs.h> 29 #include "phy/phy_int.h" 30 #include "d11.h" 31 #include "channel.h" 32 #include "scb.h" 33 #include "pub.h" 34 #include "ucode_loader.h" 35 #include "mac80211_if.h" 36 #include "main.h" 37 #include "debug.h" 38 #include "led.h" 39 40 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */ 41 #define BRCMS_FLUSH_TIMEOUT 500 /* msec */ 42 43 /* Flags we support */ 44 #define MAC_FILTERS (FIF_ALLMULTI | \ 45 FIF_FCSFAIL | \ 46 FIF_CONTROL | \ 47 FIF_OTHER_BSS | \ 48 FIF_BCN_PRBRESP_PROMISC | \ 49 FIF_PSPOLL) 50 51 #define CHAN2GHZ(channel, freqency, chflags) { \ 52 .band = NL80211_BAND_2GHZ, \ 53 .center_freq = (freqency), \ 54 .hw_value = (channel), \ 55 .flags = chflags, \ 56 .max_antenna_gain = 0, \ 57 .max_power = 19, \ 58 } 59 60 #define CHAN5GHZ(channel, chflags) { \ 61 .band = NL80211_BAND_5GHZ, \ 62 .center_freq = 5000 + 5*(channel), \ 63 .hw_value = (channel), \ 64 .flags = chflags, \ 65 .max_antenna_gain = 0, \ 66 .max_power = 21, \ 67 } 68 69 #define RATE(rate100m, _flags) { \ 70 .bitrate = (rate100m), \ 71 .flags = (_flags), \ 72 .hw_value = (rate100m / 5), \ 73 } 74 75 struct firmware_hdr { 76 __le32 offset; 77 __le32 len; 78 __le32 idx; 79 }; 80 81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = { 82 "brcm/bcm43xx", 83 NULL 84 }; 85 86 static int n_adapters_found; 87 88 MODULE_AUTHOR("Broadcom Corporation"); 89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver."); 90 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards"); 91 MODULE_LICENSE("Dual BSD/GPL"); 92 /* This needs to be adjusted when brcms_firmwares changes */ 93 MODULE_FIRMWARE("brcm/bcm43xx-0.fw"); 94 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw"); 95 96 /* recognized BCMA Core IDs */ 97 static struct bcma_device_id brcms_coreid_table[] = { 98 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS), 99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS), 100 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS), 101 {}, 102 }; 103 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table); 104 105 #if defined(CONFIG_BRCMDBG) 106 /* 107 * Module parameter for setting the debug message level. Available 108 * flags are specified by the BRCM_DL_* macros in 109 * drivers/net/wireless/brcm80211/include/defs.h. 110 */ 111 module_param_named(debug, brcm_msg_level, uint, 0644); 112 #endif 113 114 static struct ieee80211_channel brcms_2ghz_chantable[] = { 115 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS), 116 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS), 117 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS), 118 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS), 119 CHAN2GHZ(5, 2432, 0), 120 CHAN2GHZ(6, 2437, 0), 121 CHAN2GHZ(7, 2442, 0), 122 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS), 123 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS), 124 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS), 125 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS), 126 CHAN2GHZ(12, 2467, 127 IEEE80211_CHAN_NO_IR | 128 IEEE80211_CHAN_NO_HT40PLUS), 129 CHAN2GHZ(13, 2472, 130 IEEE80211_CHAN_NO_IR | 131 IEEE80211_CHAN_NO_HT40PLUS), 132 CHAN2GHZ(14, 2484, 133 IEEE80211_CHAN_NO_IR | 134 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS | 135 IEEE80211_CHAN_NO_OFDM) 136 }; 137 138 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = { 139 /* UNII-1 */ 140 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS), 141 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS), 142 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS), 143 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS), 144 /* UNII-2 */ 145 CHAN5GHZ(52, 146 IEEE80211_CHAN_RADAR | 147 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 148 CHAN5GHZ(56, 149 IEEE80211_CHAN_RADAR | 150 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 151 CHAN5GHZ(60, 152 IEEE80211_CHAN_RADAR | 153 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 154 CHAN5GHZ(64, 155 IEEE80211_CHAN_RADAR | 156 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 157 /* MID */ 158 CHAN5GHZ(100, 159 IEEE80211_CHAN_RADAR | 160 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 161 CHAN5GHZ(104, 162 IEEE80211_CHAN_RADAR | 163 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 164 CHAN5GHZ(108, 165 IEEE80211_CHAN_RADAR | 166 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 167 CHAN5GHZ(112, 168 IEEE80211_CHAN_RADAR | 169 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 170 CHAN5GHZ(116, 171 IEEE80211_CHAN_RADAR | 172 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 173 CHAN5GHZ(120, 174 IEEE80211_CHAN_RADAR | 175 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 176 CHAN5GHZ(124, 177 IEEE80211_CHAN_RADAR | 178 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 179 CHAN5GHZ(128, 180 IEEE80211_CHAN_RADAR | 181 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 182 CHAN5GHZ(132, 183 IEEE80211_CHAN_RADAR | 184 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS), 185 CHAN5GHZ(136, 186 IEEE80211_CHAN_RADAR | 187 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS), 188 CHAN5GHZ(140, 189 IEEE80211_CHAN_RADAR | 190 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS | 191 IEEE80211_CHAN_NO_HT40MINUS), 192 /* UNII-3 */ 193 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS), 194 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS), 195 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS), 196 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS), 197 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 198 }; 199 200 /* 201 * The rate table is used for both 2.4G and 5G rates. The 202 * latter being a subset as it does not support CCK rates. 203 */ 204 static struct ieee80211_rate legacy_ratetable[] = { 205 RATE(10, 0), 206 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE), 207 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE), 208 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE), 209 RATE(60, 0), 210 RATE(90, 0), 211 RATE(120, 0), 212 RATE(180, 0), 213 RATE(240, 0), 214 RATE(360, 0), 215 RATE(480, 0), 216 RATE(540, 0), 217 }; 218 219 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = { 220 .band = NL80211_BAND_2GHZ, 221 .channels = brcms_2ghz_chantable, 222 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable), 223 .bitrates = legacy_ratetable, 224 .n_bitrates = ARRAY_SIZE(legacy_ratetable), 225 .ht_cap = { 226 /* from include/linux/ieee80211.h */ 227 .cap = IEEE80211_HT_CAP_GRN_FLD | 228 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40, 229 .ht_supported = true, 230 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 231 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 232 .mcs = { 233 /* placeholders for now */ 234 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 235 .rx_highest = cpu_to_le16(500), 236 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 237 } 238 }; 239 240 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = { 241 .band = NL80211_BAND_5GHZ, 242 .channels = brcms_5ghz_nphy_chantable, 243 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable), 244 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET, 245 .n_bitrates = ARRAY_SIZE(legacy_ratetable) - 246 BRCMS_LEGACY_5G_RATE_OFFSET, 247 .ht_cap = { 248 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | 249 IEEE80211_HT_CAP_SGI_40, 250 .ht_supported = true, 251 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, 252 .ampdu_density = AMPDU_DEF_MPDU_DENSITY, 253 .mcs = { 254 /* placeholders for now */ 255 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}, 256 .rx_highest = cpu_to_le16(500), 257 .tx_params = IEEE80211_HT_MCS_TX_DEFINED} 258 } 259 }; 260 261 /* flags the given rate in rateset as requested */ 262 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br) 263 { 264 u32 i; 265 266 for (i = 0; i < rs->count; i++) { 267 if (rate != (rs->rates[i] & 0x7f)) 268 continue; 269 270 if (is_br) 271 rs->rates[i] |= BRCMS_RATE_FLAG; 272 else 273 rs->rates[i] &= BRCMS_RATE_MASK; 274 return; 275 } 276 } 277 278 /** 279 * This function frees the WL per-device resources. 280 * 281 * This function frees resources owned by the WL device pointed to 282 * by the wl parameter. 283 * 284 * precondition: can both be called locked and unlocked 285 * 286 */ 287 static void brcms_free(struct brcms_info *wl) 288 { 289 struct brcms_timer *t, *next; 290 291 /* free ucode data */ 292 if (wl->fw.fw_cnt) 293 brcms_ucode_data_free(&wl->ucode); 294 if (wl->irq) 295 free_irq(wl->irq, wl); 296 297 /* kill dpc */ 298 tasklet_kill(&wl->tasklet); 299 300 if (wl->pub) { 301 brcms_debugfs_detach(wl->pub); 302 brcms_c_module_unregister(wl->pub, "linux", wl); 303 } 304 305 /* free common resources */ 306 if (wl->wlc) { 307 brcms_c_detach(wl->wlc); 308 wl->wlc = NULL; 309 wl->pub = NULL; 310 } 311 312 /* virtual interface deletion is deferred so we cannot spinwait */ 313 314 /* wait for all pending callbacks to complete */ 315 while (atomic_read(&wl->callbacks) > 0) 316 schedule(); 317 318 /* free timers */ 319 for (t = wl->timers; t; t = next) { 320 next = t->next; 321 #ifdef DEBUG 322 kfree(t->name); 323 #endif 324 kfree(t); 325 } 326 } 327 328 /* 329 * called from both kernel as from this kernel module (error flow on attach) 330 * precondition: perimeter lock is not acquired. 331 */ 332 static void brcms_remove(struct bcma_device *pdev) 333 { 334 struct ieee80211_hw *hw = bcma_get_drvdata(pdev); 335 struct brcms_info *wl = hw->priv; 336 337 if (wl->wlc) { 338 brcms_led_unregister(wl); 339 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false); 340 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 341 ieee80211_unregister_hw(hw); 342 } 343 344 brcms_free(wl); 345 346 bcma_set_drvdata(pdev, NULL); 347 ieee80211_free_hw(hw); 348 } 349 350 /* 351 * Precondition: Since this function is called in brcms_pci_probe() context, 352 * no locking is required. 353 */ 354 static void brcms_release_fw(struct brcms_info *wl) 355 { 356 int i; 357 for (i = 0; i < MAX_FW_IMAGES; i++) { 358 release_firmware(wl->fw.fw_bin[i]); 359 release_firmware(wl->fw.fw_hdr[i]); 360 } 361 } 362 363 /* 364 * Precondition: Since this function is called in brcms_pci_probe() context, 365 * no locking is required. 366 */ 367 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev) 368 { 369 int status; 370 struct device *device = &pdev->dev; 371 char fw_name[100]; 372 int i; 373 374 memset(&wl->fw, 0, sizeof(struct brcms_firmware)); 375 for (i = 0; i < MAX_FW_IMAGES; i++) { 376 if (brcms_firmwares[i] == NULL) 377 break; 378 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i], 379 UCODE_LOADER_API_VER); 380 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device); 381 if (status) { 382 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 383 KBUILD_MODNAME, fw_name); 384 return status; 385 } 386 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i], 387 UCODE_LOADER_API_VER); 388 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device); 389 if (status) { 390 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n", 391 KBUILD_MODNAME, fw_name); 392 return status; 393 } 394 wl->fw.hdr_num_entries[i] = 395 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr)); 396 } 397 wl->fw.fw_cnt = i; 398 status = brcms_ucode_data_init(wl, &wl->ucode); 399 brcms_release_fw(wl); 400 return status; 401 } 402 403 static void brcms_ops_tx(struct ieee80211_hw *hw, 404 struct ieee80211_tx_control *control, 405 struct sk_buff *skb) 406 { 407 struct brcms_info *wl = hw->priv; 408 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); 409 410 spin_lock_bh(&wl->lock); 411 if (!wl->pub->up) { 412 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n"); 413 kfree_skb(skb); 414 goto done; 415 } 416 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw)) 417 tx_info->rate_driver_data[0] = control->sta; 418 done: 419 spin_unlock_bh(&wl->lock); 420 } 421 422 static int brcms_ops_start(struct ieee80211_hw *hw) 423 { 424 struct brcms_info *wl = hw->priv; 425 bool blocked; 426 int err; 427 428 if (!wl->ucode.bcm43xx_bomminor) { 429 err = brcms_request_fw(wl, wl->wlc->hw->d11core); 430 if (err) 431 return -ENOENT; 432 } 433 434 ieee80211_wake_queues(hw); 435 spin_lock_bh(&wl->lock); 436 blocked = brcms_rfkill_set_hw_state(wl); 437 spin_unlock_bh(&wl->lock); 438 if (!blocked) 439 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy); 440 441 spin_lock_bh(&wl->lock); 442 /* avoid acknowledging frames before a non-monitor device is added */ 443 wl->mute_tx = true; 444 445 if (!wl->pub->up) 446 if (!blocked) 447 err = brcms_up(wl); 448 else 449 err = -ERFKILL; 450 else 451 err = -ENODEV; 452 spin_unlock_bh(&wl->lock); 453 454 if (err != 0) 455 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", 456 __func__, err); 457 458 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); 459 return err; 460 } 461 462 static void brcms_ops_stop(struct ieee80211_hw *hw) 463 { 464 struct brcms_info *wl = hw->priv; 465 int status; 466 467 ieee80211_stop_queues(hw); 468 469 if (wl->wlc == NULL) 470 return; 471 472 spin_lock_bh(&wl->lock); 473 status = brcms_c_chipmatch(wl->wlc->hw->d11core); 474 spin_unlock_bh(&wl->lock); 475 if (!status) { 476 brcms_err(wl->wlc->hw->d11core, 477 "wl: brcms_ops_stop: chipmatch failed\n"); 478 return; 479 } 480 481 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); 482 483 /* put driver in down state */ 484 spin_lock_bh(&wl->lock); 485 brcms_down(wl); 486 spin_unlock_bh(&wl->lock); 487 } 488 489 static int 490 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 491 { 492 struct brcms_info *wl = hw->priv; 493 494 /* Just STA, AP and ADHOC for now */ 495 if (vif->type != NL80211_IFTYPE_STATION && 496 vif->type != NL80211_IFTYPE_AP && 497 vif->type != NL80211_IFTYPE_ADHOC) { 498 brcms_err(wl->wlc->hw->d11core, 499 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n", 500 __func__, vif->type); 501 return -EOPNOTSUPP; 502 } 503 504 spin_lock_bh(&wl->lock); 505 wl->mute_tx = false; 506 brcms_c_mute(wl->wlc, false); 507 if (vif->type == NL80211_IFTYPE_STATION) 508 brcms_c_start_station(wl->wlc, vif->addr); 509 else if (vif->type == NL80211_IFTYPE_AP) 510 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid, 511 vif->bss_conf.ssid, vif->bss_conf.ssid_len); 512 else if (vif->type == NL80211_IFTYPE_ADHOC) 513 brcms_c_start_adhoc(wl->wlc, vif->addr); 514 spin_unlock_bh(&wl->lock); 515 516 return 0; 517 } 518 519 static void 520 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 521 { 522 } 523 524 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed) 525 { 526 struct ieee80211_conf *conf = &hw->conf; 527 struct brcms_info *wl = hw->priv; 528 struct bcma_device *core = wl->wlc->hw->d11core; 529 int err = 0; 530 int new_int; 531 532 spin_lock_bh(&wl->lock); 533 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { 534 brcms_c_set_beacon_listen_interval(wl->wlc, 535 conf->listen_interval); 536 } 537 if (changed & IEEE80211_CONF_CHANGE_MONITOR) 538 brcms_dbg_info(core, "%s: change monitor mode: %s\n", 539 __func__, conf->flags & IEEE80211_CONF_MONITOR ? 540 "true" : "false"); 541 if (changed & IEEE80211_CONF_CHANGE_PS) 542 brcms_err(core, "%s: change power-save mode: %s (implement)\n", 543 __func__, conf->flags & IEEE80211_CONF_PS ? 544 "true" : "false"); 545 546 if (changed & IEEE80211_CONF_CHANGE_POWER) { 547 err = brcms_c_set_tx_power(wl->wlc, conf->power_level); 548 if (err < 0) { 549 brcms_err(core, "%s: Error setting power_level\n", 550 __func__); 551 goto config_out; 552 } 553 new_int = brcms_c_get_tx_power(wl->wlc); 554 if (new_int != conf->power_level) 555 brcms_err(core, 556 "%s: Power level req != actual, %d %d\n", 557 __func__, conf->power_level, 558 new_int); 559 } 560 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 561 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 || 562 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 563 err = brcms_c_set_channel(wl->wlc, 564 conf->chandef.chan->hw_value); 565 else 566 err = -ENOTSUPP; 567 } 568 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) 569 err = brcms_c_set_rate_limit(wl->wlc, 570 conf->short_frame_max_tx_count, 571 conf->long_frame_max_tx_count); 572 573 config_out: 574 spin_unlock_bh(&wl->lock); 575 return err; 576 } 577 578 static void 579 brcms_ops_bss_info_changed(struct ieee80211_hw *hw, 580 struct ieee80211_vif *vif, 581 struct ieee80211_bss_conf *info, u32 changed) 582 { 583 struct brcms_info *wl = hw->priv; 584 struct bcma_device *core = wl->wlc->hw->d11core; 585 586 if (changed & BSS_CHANGED_ASSOC) { 587 /* association status changed (associated/disassociated) 588 * also implies a change in the AID. 589 */ 590 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME, 591 __func__, info->assoc ? "" : "dis"); 592 spin_lock_bh(&wl->lock); 593 brcms_c_associate_upd(wl->wlc, info->assoc); 594 spin_unlock_bh(&wl->lock); 595 } 596 if (changed & BSS_CHANGED_ERP_SLOT) { 597 s8 val; 598 599 /* slot timing changed */ 600 if (info->use_short_slot) 601 val = 1; 602 else 603 val = 0; 604 spin_lock_bh(&wl->lock); 605 brcms_c_set_shortslot_override(wl->wlc, val); 606 spin_unlock_bh(&wl->lock); 607 } 608 609 if (changed & BSS_CHANGED_HT) { 610 /* 802.11n parameters changed */ 611 u16 mode = info->ht_operation_mode; 612 613 spin_lock_bh(&wl->lock); 614 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG, 615 mode & IEEE80211_HT_OP_MODE_PROTECTION); 616 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF, 617 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); 618 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS, 619 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT); 620 spin_unlock_bh(&wl->lock); 621 } 622 if (changed & BSS_CHANGED_BASIC_RATES) { 623 struct ieee80211_supported_band *bi; 624 u32 br_mask, i; 625 u16 rate; 626 struct brcm_rateset rs; 627 int error; 628 629 /* retrieve the current rates */ 630 spin_lock_bh(&wl->lock); 631 brcms_c_get_current_rateset(wl->wlc, &rs); 632 spin_unlock_bh(&wl->lock); 633 634 br_mask = info->basic_rates; 635 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)]; 636 for (i = 0; i < bi->n_bitrates; i++) { 637 /* convert to internal rate value */ 638 rate = (bi->bitrates[i].bitrate << 1) / 10; 639 640 /* set/clear basic rate flag */ 641 brcms_set_basic_rate(&rs, rate, br_mask & 1); 642 br_mask >>= 1; 643 } 644 645 /* update the rate set */ 646 spin_lock_bh(&wl->lock); 647 error = brcms_c_set_rateset(wl->wlc, &rs); 648 spin_unlock_bh(&wl->lock); 649 if (error) 650 brcms_err(core, "changing basic rates failed: %d\n", 651 error); 652 } 653 if (changed & BSS_CHANGED_BEACON_INT) { 654 /* Beacon interval changed */ 655 spin_lock_bh(&wl->lock); 656 brcms_c_set_beacon_period(wl->wlc, info->beacon_int); 657 spin_unlock_bh(&wl->lock); 658 } 659 if (changed & BSS_CHANGED_BSSID) { 660 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 661 spin_lock_bh(&wl->lock); 662 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid); 663 spin_unlock_bh(&wl->lock); 664 } 665 if (changed & BSS_CHANGED_SSID) { 666 /* BSSID changed, for whatever reason (IBSS and managed mode) */ 667 spin_lock_bh(&wl->lock); 668 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len); 669 spin_unlock_bh(&wl->lock); 670 } 671 if (changed & BSS_CHANGED_BEACON) { 672 /* Beacon data changed, retrieve new beacon (beaconing modes) */ 673 struct sk_buff *beacon; 674 u16 tim_offset = 0; 675 676 spin_lock_bh(&wl->lock); 677 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL); 678 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, 679 info->dtim_period); 680 spin_unlock_bh(&wl->lock); 681 } 682 683 if (changed & BSS_CHANGED_AP_PROBE_RESP) { 684 struct sk_buff *probe_resp; 685 686 spin_lock_bh(&wl->lock); 687 probe_resp = ieee80211_proberesp_get(hw, vif); 688 brcms_c_set_new_probe_resp(wl->wlc, probe_resp); 689 spin_unlock_bh(&wl->lock); 690 } 691 692 if (changed & BSS_CHANGED_BEACON_ENABLED) { 693 /* Beaconing should be enabled/disabled (beaconing modes) */ 694 brcms_err(core, "%s: Beacon enabled: %s\n", __func__, 695 info->enable_beacon ? "true" : "false"); 696 if (info->enable_beacon && 697 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) { 698 brcms_c_enable_probe_resp(wl->wlc, true); 699 } else { 700 brcms_c_enable_probe_resp(wl->wlc, false); 701 } 702 } 703 704 if (changed & BSS_CHANGED_CQM) { 705 /* Connection quality monitor config changed */ 706 brcms_err(core, "%s: cqm change: threshold %d, hys %d " 707 " (implement)\n", __func__, info->cqm_rssi_thold, 708 info->cqm_rssi_hyst); 709 } 710 711 if (changed & BSS_CHANGED_IBSS) { 712 /* IBSS join status changed */ 713 brcms_err(core, "%s: IBSS joined: %s (implement)\n", 714 __func__, info->ibss_joined ? "true" : "false"); 715 } 716 717 if (changed & BSS_CHANGED_ARP_FILTER) { 718 /* Hardware ARP filter address list or state changed */ 719 brcms_err(core, "%s: arp filtering: %d addresses" 720 " (implement)\n", __func__, info->arp_addr_cnt); 721 } 722 723 if (changed & BSS_CHANGED_QOS) { 724 /* 725 * QoS for this association was enabled/disabled. 726 * Note that it is only ever disabled for station mode. 727 */ 728 brcms_err(core, "%s: qos enabled: %s (implement)\n", 729 __func__, info->qos ? "true" : "false"); 730 } 731 return; 732 } 733 734 static void 735 brcms_ops_configure_filter(struct ieee80211_hw *hw, 736 unsigned int changed_flags, 737 unsigned int *total_flags, u64 multicast) 738 { 739 struct brcms_info *wl = hw->priv; 740 struct bcma_device *core = wl->wlc->hw->d11core; 741 742 changed_flags &= MAC_FILTERS; 743 *total_flags &= MAC_FILTERS; 744 745 if (changed_flags & FIF_ALLMULTI) 746 brcms_dbg_info(core, "FIF_ALLMULTI\n"); 747 if (changed_flags & FIF_FCSFAIL) 748 brcms_dbg_info(core, "FIF_FCSFAIL\n"); 749 if (changed_flags & FIF_CONTROL) 750 brcms_dbg_info(core, "FIF_CONTROL\n"); 751 if (changed_flags & FIF_OTHER_BSS) 752 brcms_dbg_info(core, "FIF_OTHER_BSS\n"); 753 if (changed_flags & FIF_PSPOLL) 754 brcms_dbg_info(core, "FIF_PSPOLL\n"); 755 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) 756 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n"); 757 758 spin_lock_bh(&wl->lock); 759 brcms_c_mac_promisc(wl->wlc, *total_flags); 760 spin_unlock_bh(&wl->lock); 761 return; 762 } 763 764 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw, 765 struct ieee80211_vif *vif, 766 const u8 *mac_addr) 767 { 768 struct brcms_info *wl = hw->priv; 769 spin_lock_bh(&wl->lock); 770 brcms_c_scan_start(wl->wlc); 771 spin_unlock_bh(&wl->lock); 772 return; 773 } 774 775 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw, 776 struct ieee80211_vif *vif) 777 { 778 struct brcms_info *wl = hw->priv; 779 spin_lock_bh(&wl->lock); 780 brcms_c_scan_stop(wl->wlc); 781 spin_unlock_bh(&wl->lock); 782 return; 783 } 784 785 static int 786 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, 787 const struct ieee80211_tx_queue_params *params) 788 { 789 struct brcms_info *wl = hw->priv; 790 791 spin_lock_bh(&wl->lock); 792 brcms_c_wme_setparams(wl->wlc, queue, params, true); 793 spin_unlock_bh(&wl->lock); 794 795 return 0; 796 } 797 798 static int 799 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 800 struct ieee80211_sta *sta) 801 { 802 struct brcms_info *wl = hw->priv; 803 struct scb *scb = &wl->wlc->pri_scb; 804 805 brcms_c_init_scb(scb); 806 807 wl->pub->global_ampdu = &(scb->scb_ampdu); 808 wl->pub->global_ampdu->scb = scb; 809 wl->pub->global_ampdu->max_pdu = 16; 810 811 /* 812 * minstrel_ht initiates addBA on our behalf by calling 813 * ieee80211_start_tx_ba_session() 814 */ 815 return 0; 816 } 817 818 static int 819 brcms_ops_ampdu_action(struct ieee80211_hw *hw, 820 struct ieee80211_vif *vif, 821 struct ieee80211_ampdu_params *params) 822 { 823 struct brcms_info *wl = hw->priv; 824 struct scb *scb = &wl->wlc->pri_scb; 825 int status; 826 struct ieee80211_sta *sta = params->sta; 827 enum ieee80211_ampdu_mlme_action action = params->action; 828 u16 tid = params->tid; 829 u8 buf_size = params->buf_size; 830 831 if (WARN_ON(scb->magic != SCB_MAGIC)) 832 return -EIDRM; 833 switch (action) { 834 case IEEE80211_AMPDU_RX_START: 835 break; 836 case IEEE80211_AMPDU_RX_STOP: 837 break; 838 case IEEE80211_AMPDU_TX_START: 839 spin_lock_bh(&wl->lock); 840 status = brcms_c_aggregatable(wl->wlc, tid); 841 spin_unlock_bh(&wl->lock); 842 if (!status) { 843 brcms_err(wl->wlc->hw->d11core, 844 "START: tid %d is not agg\'able\n", tid); 845 return -EINVAL; 846 } 847 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 848 break; 849 850 case IEEE80211_AMPDU_TX_STOP_CONT: 851 case IEEE80211_AMPDU_TX_STOP_FLUSH: 852 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 853 spin_lock_bh(&wl->lock); 854 brcms_c_ampdu_flush(wl->wlc, sta, tid); 855 spin_unlock_bh(&wl->lock); 856 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 857 break; 858 case IEEE80211_AMPDU_TX_OPERATIONAL: 859 /* 860 * BA window size from ADDBA response ('buf_size') defines how 861 * many outstanding MPDUs are allowed for the BA stream by 862 * recipient and traffic class. 'ampdu_factor' gives maximum 863 * AMPDU size. 864 */ 865 spin_lock_bh(&wl->lock); 866 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size, 867 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + 868 sta->ht_cap.ampdu_factor)) - 1); 869 spin_unlock_bh(&wl->lock); 870 /* Power save wakeup */ 871 break; 872 default: 873 brcms_err(wl->wlc->hw->d11core, 874 "%s: Invalid command, ignoring\n", __func__); 875 } 876 877 return 0; 878 } 879 880 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw) 881 { 882 struct brcms_info *wl = hw->priv; 883 bool blocked; 884 885 spin_lock_bh(&wl->lock); 886 blocked = brcms_c_check_radio_disabled(wl->wlc); 887 spin_unlock_bh(&wl->lock); 888 889 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 890 } 891 892 static bool brcms_tx_flush_completed(struct brcms_info *wl) 893 { 894 bool result; 895 896 spin_lock_bh(&wl->lock); 897 result = brcms_c_tx_flush_completed(wl->wlc); 898 spin_unlock_bh(&wl->lock); 899 return result; 900 } 901 902 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 903 u32 queues, bool drop) 904 { 905 struct brcms_info *wl = hw->priv; 906 int ret; 907 908 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false"); 909 910 ret = wait_event_timeout(wl->tx_flush_wq, 911 brcms_tx_flush_completed(wl), 912 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT)); 913 914 brcms_dbg_mac80211(wl->wlc->hw->d11core, 915 "ret=%d\n", jiffies_to_msecs(ret)); 916 } 917 918 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 919 { 920 struct brcms_info *wl = hw->priv; 921 u64 tsf; 922 923 spin_lock_bh(&wl->lock); 924 tsf = brcms_c_tsf_get(wl->wlc); 925 spin_unlock_bh(&wl->lock); 926 927 return tsf; 928 } 929 930 static void brcms_ops_set_tsf(struct ieee80211_hw *hw, 931 struct ieee80211_vif *vif, u64 tsf) 932 { 933 struct brcms_info *wl = hw->priv; 934 935 spin_lock_bh(&wl->lock); 936 brcms_c_tsf_set(wl->wlc, tsf); 937 spin_unlock_bh(&wl->lock); 938 } 939 940 static const struct ieee80211_ops brcms_ops = { 941 .tx = brcms_ops_tx, 942 .start = brcms_ops_start, 943 .stop = brcms_ops_stop, 944 .add_interface = brcms_ops_add_interface, 945 .remove_interface = brcms_ops_remove_interface, 946 .config = brcms_ops_config, 947 .bss_info_changed = brcms_ops_bss_info_changed, 948 .configure_filter = brcms_ops_configure_filter, 949 .sw_scan_start = brcms_ops_sw_scan_start, 950 .sw_scan_complete = brcms_ops_sw_scan_complete, 951 .conf_tx = brcms_ops_conf_tx, 952 .sta_add = brcms_ops_sta_add, 953 .ampdu_action = brcms_ops_ampdu_action, 954 .rfkill_poll = brcms_ops_rfkill_poll, 955 .flush = brcms_ops_flush, 956 .get_tsf = brcms_ops_get_tsf, 957 .set_tsf = brcms_ops_set_tsf, 958 }; 959 960 void brcms_dpc(unsigned long data) 961 { 962 struct brcms_info *wl; 963 964 wl = (struct brcms_info *) data; 965 966 spin_lock_bh(&wl->lock); 967 968 /* call the common second level interrupt handler */ 969 if (wl->pub->up) { 970 if (wl->resched) { 971 unsigned long flags; 972 973 spin_lock_irqsave(&wl->isr_lock, flags); 974 brcms_c_intrsupd(wl->wlc); 975 spin_unlock_irqrestore(&wl->isr_lock, flags); 976 } 977 978 wl->resched = brcms_c_dpc(wl->wlc, true); 979 } 980 981 /* brcms_c_dpc() may bring the driver down */ 982 if (!wl->pub->up) 983 goto done; 984 985 /* re-schedule dpc */ 986 if (wl->resched) 987 tasklet_schedule(&wl->tasklet); 988 else 989 /* re-enable interrupts */ 990 brcms_intrson(wl); 991 992 done: 993 spin_unlock_bh(&wl->lock); 994 wake_up(&wl->tx_flush_wq); 995 } 996 997 static irqreturn_t brcms_isr(int irq, void *dev_id) 998 { 999 struct brcms_info *wl; 1000 irqreturn_t ret = IRQ_NONE; 1001 1002 wl = (struct brcms_info *) dev_id; 1003 1004 spin_lock(&wl->isr_lock); 1005 1006 /* call common first level interrupt handler */ 1007 if (brcms_c_isr(wl->wlc)) { 1008 /* schedule second level handler */ 1009 tasklet_schedule(&wl->tasklet); 1010 ret = IRQ_HANDLED; 1011 } 1012 1013 spin_unlock(&wl->isr_lock); 1014 1015 return ret; 1016 } 1017 1018 /* 1019 * is called in brcms_pci_probe() context, therefore no locking required. 1020 */ 1021 static int ieee_hw_rate_init(struct ieee80211_hw *hw) 1022 { 1023 struct brcms_info *wl = hw->priv; 1024 struct brcms_c_info *wlc = wl->wlc; 1025 struct ieee80211_supported_band *band; 1026 int has_5g = 0; 1027 u16 phy_type; 1028 1029 hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; 1030 hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; 1031 1032 phy_type = brcms_c_get_phy_type(wl->wlc, 0); 1033 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1034 band = &wlc->bandstate[BAND_2G_INDEX]->band; 1035 *band = brcms_band_2GHz_nphy_template; 1036 if (phy_type == PHY_TYPE_LCN) { 1037 /* Single stream */ 1038 band->ht_cap.mcs.rx_mask[1] = 0; 1039 band->ht_cap.mcs.rx_highest = cpu_to_le16(72); 1040 } 1041 hw->wiphy->bands[NL80211_BAND_2GHZ] = band; 1042 } else { 1043 return -EPERM; 1044 } 1045 1046 /* Assume all bands use the same phy. True for 11n devices. */ 1047 if (wl->pub->_nbands > 1) { 1048 has_5g++; 1049 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) { 1050 band = &wlc->bandstate[BAND_5G_INDEX]->band; 1051 *band = brcms_band_5GHz_nphy_template; 1052 hw->wiphy->bands[NL80211_BAND_5GHZ] = band; 1053 } else { 1054 return -EPERM; 1055 } 1056 } 1057 return 0; 1058 } 1059 1060 /* 1061 * is called in brcms_pci_probe() context, therefore no locking required. 1062 */ 1063 static int ieee_hw_init(struct ieee80211_hw *hw) 1064 { 1065 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 1066 ieee80211_hw_set(hw, SIGNAL_DBM); 1067 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 1068 1069 hw->extra_tx_headroom = brcms_c_get_header_len(); 1070 hw->queues = N_TX_QUEUES; 1071 hw->max_rates = 2; /* Primary rate and 1 fallback rate */ 1072 1073 /* channel change time is dependent on chip and band */ 1074 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1075 BIT(NL80211_IFTYPE_AP) | 1076 BIT(NL80211_IFTYPE_ADHOC); 1077 1078 /* 1079 * deactivate sending probe responses by ucude, because this will 1080 * cause problems when WPS is used. 1081 * 1082 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 1083 */ 1084 1085 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1086 1087 hw->rate_control_algorithm = "minstrel_ht"; 1088 1089 hw->sta_data_size = 0; 1090 return ieee_hw_rate_init(hw); 1091 } 1092 1093 /** 1094 * attach to the WL device. 1095 * 1096 * Attach to the WL device identified by vendor and device parameters. 1097 * regs is a host accessible memory address pointing to WL device registers. 1098 * 1099 * is called in brcms_bcma_probe() context, therefore no locking required. 1100 */ 1101 static struct brcms_info *brcms_attach(struct bcma_device *pdev) 1102 { 1103 struct brcms_info *wl = NULL; 1104 int unit, err; 1105 struct ieee80211_hw *hw; 1106 u8 perm[ETH_ALEN]; 1107 1108 unit = n_adapters_found; 1109 err = 0; 1110 1111 if (unit < 0) 1112 return NULL; 1113 1114 /* allocate private info */ 1115 hw = bcma_get_drvdata(pdev); 1116 if (hw != NULL) 1117 wl = hw->priv; 1118 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL)) 1119 return NULL; 1120 wl->wiphy = hw->wiphy; 1121 1122 atomic_set(&wl->callbacks, 0); 1123 1124 init_waitqueue_head(&wl->tx_flush_wq); 1125 1126 /* setup the bottom half handler */ 1127 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl); 1128 1129 spin_lock_init(&wl->lock); 1130 spin_lock_init(&wl->isr_lock); 1131 1132 /* common load-time initialization */ 1133 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err); 1134 if (!wl->wlc) { 1135 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n", 1136 KBUILD_MODNAME, err); 1137 goto fail; 1138 } 1139 wl->pub = brcms_c_pub(wl->wlc); 1140 1141 wl->pub->ieee_hw = hw; 1142 1143 /* register our interrupt handler */ 1144 if (request_irq(pdev->irq, brcms_isr, 1145 IRQF_SHARED, KBUILD_MODNAME, wl)) { 1146 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit); 1147 goto fail; 1148 } 1149 wl->irq = pdev->irq; 1150 1151 /* register module */ 1152 brcms_c_module_register(wl->pub, "linux", wl, NULL); 1153 1154 if (ieee_hw_init(hw)) { 1155 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit, 1156 __func__); 1157 goto fail; 1158 } 1159 1160 brcms_c_regd_init(wl->wlc); 1161 1162 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN); 1163 if (WARN_ON(!is_valid_ether_addr(perm))) 1164 goto fail; 1165 SET_IEEE80211_PERM_ADDR(hw, perm); 1166 1167 err = ieee80211_register_hw(hw); 1168 if (err) 1169 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status" 1170 "%d\n", __func__, err); 1171 1172 if (wl->pub->srom_ccode[0] && 1173 regulatory_hint(wl->wiphy, wl->pub->srom_ccode)) 1174 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__); 1175 1176 brcms_debugfs_attach(wl->pub); 1177 brcms_debugfs_create_files(wl->pub); 1178 n_adapters_found++; 1179 return wl; 1180 1181 fail: 1182 brcms_free(wl); 1183 return NULL; 1184 } 1185 1186 1187 1188 /** 1189 * determines if a device is a WL device, and if so, attaches it. 1190 * 1191 * This function determines if a device pointed to by pdev is a WL device, 1192 * and if so, performs a brcms_attach() on it. 1193 * 1194 * Perimeter lock is initialized in the course of this function. 1195 */ 1196 static int brcms_bcma_probe(struct bcma_device *pdev) 1197 { 1198 struct brcms_info *wl; 1199 struct ieee80211_hw *hw; 1200 1201 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n", 1202 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class, 1203 pdev->irq); 1204 1205 if ((pdev->id.manuf != BCMA_MANUF_BCM) || 1206 (pdev->id.id != BCMA_CORE_80211)) 1207 return -ENODEV; 1208 1209 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops); 1210 if (!hw) { 1211 pr_err("%s: ieee80211_alloc_hw failed\n", __func__); 1212 return -ENOMEM; 1213 } 1214 1215 SET_IEEE80211_DEV(hw, &pdev->dev); 1216 1217 bcma_set_drvdata(pdev, hw); 1218 1219 memset(hw->priv, 0, sizeof(*wl)); 1220 1221 wl = brcms_attach(pdev); 1222 if (!wl) { 1223 pr_err("%s: brcms_attach failed!\n", __func__); 1224 return -ENODEV; 1225 } 1226 brcms_led_register(wl); 1227 1228 return 0; 1229 } 1230 1231 static int brcms_suspend(struct bcma_device *pdev) 1232 { 1233 struct brcms_info *wl; 1234 struct ieee80211_hw *hw; 1235 1236 hw = bcma_get_drvdata(pdev); 1237 wl = hw->priv; 1238 if (!wl) { 1239 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME, 1240 __func__); 1241 return -ENODEV; 1242 } 1243 1244 /* only need to flag hw is down for proper resume */ 1245 spin_lock_bh(&wl->lock); 1246 wl->pub->hw_up = false; 1247 spin_unlock_bh(&wl->lock); 1248 1249 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n"); 1250 1251 return 0; 1252 } 1253 1254 static int brcms_resume(struct bcma_device *pdev) 1255 { 1256 return 0; 1257 } 1258 1259 static struct bcma_driver brcms_bcma_driver = { 1260 .name = KBUILD_MODNAME, 1261 .probe = brcms_bcma_probe, 1262 .suspend = brcms_suspend, 1263 .resume = brcms_resume, 1264 .remove = brcms_remove, 1265 .id_table = brcms_coreid_table, 1266 }; 1267 1268 /** 1269 * This is the main entry point for the brcmsmac driver. 1270 * 1271 * This function is scheduled upon module initialization and 1272 * does the driver registration, which result in brcms_bcma_probe() 1273 * call resulting in the driver bringup. 1274 */ 1275 static void brcms_driver_init(struct work_struct *work) 1276 { 1277 int error; 1278 1279 error = bcma_driver_register(&brcms_bcma_driver); 1280 if (error) 1281 pr_err("%s: register returned %d\n", __func__, error); 1282 } 1283 1284 static DECLARE_WORK(brcms_driver_work, brcms_driver_init); 1285 1286 static int __init brcms_module_init(void) 1287 { 1288 brcms_debugfs_init(); 1289 if (!schedule_work(&brcms_driver_work)) 1290 return -EBUSY; 1291 1292 return 0; 1293 } 1294 1295 /** 1296 * This function unloads the brcmsmac driver from the system. 1297 * 1298 * This function unconditionally unloads the brcmsmac driver module from the 1299 * system. 1300 * 1301 */ 1302 static void __exit brcms_module_exit(void) 1303 { 1304 cancel_work_sync(&brcms_driver_work); 1305 bcma_driver_unregister(&brcms_bcma_driver); 1306 brcms_debugfs_exit(); 1307 } 1308 1309 module_init(brcms_module_init); 1310 module_exit(brcms_module_exit); 1311 1312 /* 1313 * precondition: perimeter lock has been acquired 1314 */ 1315 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif, 1316 bool state, int prio) 1317 { 1318 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__); 1319 } 1320 1321 /* 1322 * precondition: perimeter lock has been acquired 1323 */ 1324 void brcms_init(struct brcms_info *wl) 1325 { 1326 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n", 1327 wl->pub->unit); 1328 brcms_reset(wl); 1329 brcms_c_init(wl->wlc, wl->mute_tx); 1330 } 1331 1332 /* 1333 * precondition: perimeter lock has been acquired 1334 */ 1335 uint brcms_reset(struct brcms_info *wl) 1336 { 1337 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit); 1338 brcms_c_reset(wl->wlc); 1339 1340 /* dpc will not be rescheduled */ 1341 wl->resched = false; 1342 1343 /* inform publicly that interface is down */ 1344 wl->pub->up = false; 1345 1346 return 0; 1347 } 1348 1349 void brcms_fatal_error(struct brcms_info *wl) 1350 { 1351 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n", 1352 wl->wlc->pub->unit); 1353 brcms_reset(wl); 1354 ieee80211_restart_hw(wl->pub->ieee_hw); 1355 } 1356 1357 /* 1358 * These are interrupt on/off entry points. Disable interrupts 1359 * during interrupt state transition. 1360 */ 1361 void brcms_intrson(struct brcms_info *wl) 1362 { 1363 unsigned long flags; 1364 1365 spin_lock_irqsave(&wl->isr_lock, flags); 1366 brcms_c_intrson(wl->wlc); 1367 spin_unlock_irqrestore(&wl->isr_lock, flags); 1368 } 1369 1370 u32 brcms_intrsoff(struct brcms_info *wl) 1371 { 1372 unsigned long flags; 1373 u32 status; 1374 1375 spin_lock_irqsave(&wl->isr_lock, flags); 1376 status = brcms_c_intrsoff(wl->wlc); 1377 spin_unlock_irqrestore(&wl->isr_lock, flags); 1378 return status; 1379 } 1380 1381 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask) 1382 { 1383 unsigned long flags; 1384 1385 spin_lock_irqsave(&wl->isr_lock, flags); 1386 brcms_c_intrsrestore(wl->wlc, macintmask); 1387 spin_unlock_irqrestore(&wl->isr_lock, flags); 1388 } 1389 1390 /* 1391 * precondition: perimeter lock has been acquired 1392 */ 1393 int brcms_up(struct brcms_info *wl) 1394 { 1395 int error = 0; 1396 1397 if (wl->pub->up) 1398 return 0; 1399 1400 error = brcms_c_up(wl->wlc); 1401 1402 return error; 1403 } 1404 1405 /* 1406 * precondition: perimeter lock has been acquired 1407 */ 1408 void brcms_down(struct brcms_info *wl) 1409 { 1410 uint callbacks, ret_val = 0; 1411 1412 /* call common down function */ 1413 ret_val = brcms_c_down(wl->wlc); 1414 callbacks = atomic_read(&wl->callbacks) - ret_val; 1415 1416 /* wait for down callbacks to complete */ 1417 spin_unlock_bh(&wl->lock); 1418 1419 /* For HIGH_only driver, it's important to actually schedule other work, 1420 * not just spin wait since everything runs at schedule level 1421 */ 1422 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000); 1423 1424 spin_lock_bh(&wl->lock); 1425 } 1426 1427 /* 1428 * precondition: perimeter lock is not acquired 1429 */ 1430 static void _brcms_timer(struct work_struct *work) 1431 { 1432 struct brcms_timer *t = container_of(work, struct brcms_timer, 1433 dly_wrk.work); 1434 1435 spin_lock_bh(&t->wl->lock); 1436 1437 if (t->set) { 1438 if (t->periodic) { 1439 atomic_inc(&t->wl->callbacks); 1440 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw, 1441 &t->dly_wrk, 1442 msecs_to_jiffies(t->ms)); 1443 } else { 1444 t->set = false; 1445 } 1446 1447 t->fn(t->arg); 1448 } 1449 1450 atomic_dec(&t->wl->callbacks); 1451 1452 spin_unlock_bh(&t->wl->lock); 1453 } 1454 1455 /* 1456 * Adds a timer to the list. Caller supplies a timer function. 1457 * Is called from wlc. 1458 * 1459 * precondition: perimeter lock has been acquired 1460 */ 1461 struct brcms_timer *brcms_init_timer(struct brcms_info *wl, 1462 void (*fn) (void *arg), 1463 void *arg, const char *name) 1464 { 1465 struct brcms_timer *t; 1466 1467 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC); 1468 if (!t) 1469 return NULL; 1470 1471 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer); 1472 t->wl = wl; 1473 t->fn = fn; 1474 t->arg = arg; 1475 t->next = wl->timers; 1476 wl->timers = t; 1477 1478 #ifdef DEBUG 1479 t->name = kstrdup(name, GFP_ATOMIC); 1480 #endif 1481 1482 return t; 1483 } 1484 1485 /* 1486 * adds only the kernel timer since it's going to be more accurate 1487 * as well as it's easier to make it periodic 1488 * 1489 * precondition: perimeter lock has been acquired 1490 */ 1491 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic) 1492 { 1493 struct ieee80211_hw *hw = t->wl->pub->ieee_hw; 1494 1495 #ifdef DEBUG 1496 if (t->set) 1497 brcms_dbg_info(t->wl->wlc->hw->d11core, 1498 "%s: Already set. Name: %s, per %d\n", 1499 __func__, t->name, periodic); 1500 #endif 1501 t->ms = ms; 1502 t->periodic = (bool) periodic; 1503 if (!t->set) { 1504 t->set = true; 1505 atomic_inc(&t->wl->callbacks); 1506 } 1507 1508 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms)); 1509 } 1510 1511 /* 1512 * return true if timer successfully deleted, false if still pending 1513 * 1514 * precondition: perimeter lock has been acquired 1515 */ 1516 bool brcms_del_timer(struct brcms_timer *t) 1517 { 1518 if (t->set) { 1519 t->set = false; 1520 if (!cancel_delayed_work(&t->dly_wrk)) 1521 return false; 1522 1523 atomic_dec(&t->wl->callbacks); 1524 } 1525 1526 return true; 1527 } 1528 1529 /* 1530 * precondition: perimeter lock has been acquired 1531 */ 1532 void brcms_free_timer(struct brcms_timer *t) 1533 { 1534 struct brcms_info *wl = t->wl; 1535 struct brcms_timer *tmp; 1536 1537 /* delete the timer in case it is active */ 1538 brcms_del_timer(t); 1539 1540 if (wl->timers == t) { 1541 wl->timers = wl->timers->next; 1542 #ifdef DEBUG 1543 kfree(t->name); 1544 #endif 1545 kfree(t); 1546 return; 1547 1548 } 1549 1550 tmp = wl->timers; 1551 while (tmp) { 1552 if (tmp->next == t) { 1553 tmp->next = t->next; 1554 #ifdef DEBUG 1555 kfree(t->name); 1556 #endif 1557 kfree(t); 1558 return; 1559 } 1560 tmp = tmp->next; 1561 } 1562 1563 } 1564 1565 /* 1566 * precondition: no locking required 1567 */ 1568 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx) 1569 { 1570 int i, entry; 1571 const u8 *pdata; 1572 struct firmware_hdr *hdr; 1573 for (i = 0; i < wl->fw.fw_cnt; i++) { 1574 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1575 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1576 entry++, hdr++) { 1577 u32 len = le32_to_cpu(hdr->len); 1578 if (le32_to_cpu(hdr->idx) == idx) { 1579 pdata = wl->fw.fw_bin[i]->data + 1580 le32_to_cpu(hdr->offset); 1581 *pbuf = kmemdup(pdata, len, GFP_KERNEL); 1582 if (*pbuf == NULL) 1583 goto fail; 1584 1585 return 0; 1586 } 1587 } 1588 } 1589 brcms_err(wl->wlc->hw->d11core, 1590 "ERROR: ucode buf tag:%d can not be found!\n", idx); 1591 *pbuf = NULL; 1592 fail: 1593 return -ENODATA; 1594 } 1595 1596 /* 1597 * Precondition: Since this function is called in brcms_bcma_probe() context, 1598 * no locking is required. 1599 */ 1600 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx) 1601 { 1602 int i, entry; 1603 const u8 *pdata; 1604 struct firmware_hdr *hdr; 1605 for (i = 0; i < wl->fw.fw_cnt; i++) { 1606 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data; 1607 for (entry = 0; entry < wl->fw.hdr_num_entries[i]; 1608 entry++, hdr++) { 1609 if (le32_to_cpu(hdr->idx) == idx) { 1610 pdata = wl->fw.fw_bin[i]->data + 1611 le32_to_cpu(hdr->offset); 1612 if (le32_to_cpu(hdr->len) != 4) { 1613 brcms_err(wl->wlc->hw->d11core, 1614 "ERROR: fw hdr len\n"); 1615 return -ENOMSG; 1616 } 1617 *n_bytes = le32_to_cpu(*((__le32 *) pdata)); 1618 return 0; 1619 } 1620 } 1621 } 1622 brcms_err(wl->wlc->hw->d11core, 1623 "ERROR: ucode tag:%d can not be found!\n", idx); 1624 return -ENOMSG; 1625 } 1626 1627 /* 1628 * precondition: can both be called locked and unlocked 1629 */ 1630 void brcms_ucode_free_buf(void *p) 1631 { 1632 kfree(p); 1633 } 1634 1635 /* 1636 * checks validity of all firmware images loaded from user space 1637 * 1638 * Precondition: Since this function is called in brcms_bcma_probe() context, 1639 * no locking is required. 1640 */ 1641 int brcms_check_firmwares(struct brcms_info *wl) 1642 { 1643 int i; 1644 int entry; 1645 int rc = 0; 1646 const struct firmware *fw; 1647 const struct firmware *fw_hdr; 1648 struct firmware_hdr *ucode_hdr; 1649 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) { 1650 fw = wl->fw.fw_bin[i]; 1651 fw_hdr = wl->fw.fw_hdr[i]; 1652 if (fw == NULL && fw_hdr == NULL) { 1653 break; 1654 } else if (fw == NULL || fw_hdr == NULL) { 1655 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n", 1656 __func__); 1657 rc = -EBADF; 1658 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) { 1659 wiphy_err(wl->wiphy, "%s: non integral fw hdr file " 1660 "size %zu/%zu\n", __func__, fw_hdr->size, 1661 sizeof(struct firmware_hdr)); 1662 rc = -EBADF; 1663 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) { 1664 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n", 1665 __func__, fw->size); 1666 rc = -EBADF; 1667 } else { 1668 /* check if ucode section overruns firmware image */ 1669 ucode_hdr = (struct firmware_hdr *)fw_hdr->data; 1670 for (entry = 0; entry < wl->fw.hdr_num_entries[i] && 1671 !rc; entry++, ucode_hdr++) { 1672 if (le32_to_cpu(ucode_hdr->offset) + 1673 le32_to_cpu(ucode_hdr->len) > 1674 fw->size) { 1675 wiphy_err(wl->wiphy, 1676 "%s: conflicting bin/hdr\n", 1677 __func__); 1678 rc = -EBADF; 1679 } 1680 } 1681 } 1682 } 1683 if (rc == 0 && wl->fw.fw_cnt != i) { 1684 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__, 1685 wl->fw.fw_cnt); 1686 rc = -EBADF; 1687 } 1688 return rc; 1689 } 1690 1691 /* 1692 * precondition: perimeter lock has been acquired 1693 */ 1694 bool brcms_rfkill_set_hw_state(struct brcms_info *wl) 1695 { 1696 bool blocked = brcms_c_check_radio_disabled(wl->wlc); 1697 1698 spin_unlock_bh(&wl->lock); 1699 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked); 1700 if (blocked) 1701 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy); 1702 spin_lock_bh(&wl->lock); 1703 return blocked; 1704 } 1705