1 /****************************************************************************** 2 * 3 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. 4 * Copyright(c) 2015 Intel Deutschland GmbH 5 * 6 * Portions of this file are derived from the ipw3945 project, as well 7 * as portions of the ieee80211 subsystem header files. 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but WITHOUT 14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 16 * more details. 17 * 18 * You should have received a copy of the GNU General Public License along with 19 * this program; if not, write to the Free Software Foundation, Inc., 20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA 21 * 22 * The full GNU General Public License is included in this distribution in the 23 * file called LICENSE. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 *****************************************************************************/ 30 31 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 32 33 #include <linux/kernel.h> 34 #include <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/delay.h> 38 #include <linux/sched.h> 39 #include <linux/skbuff.h> 40 #include <linux/netdevice.h> 41 #include <linux/etherdevice.h> 42 #include <linux/if_arp.h> 43 44 #include <net/mac80211.h> 45 46 #include <asm/div64.h> 47 48 #include "iwl-eeprom-read.h" 49 #include "iwl-eeprom-parse.h" 50 #include "iwl-io.h" 51 #include "iwl-trans.h" 52 #include "iwl-op-mode.h" 53 #include "iwl-drv.h" 54 #include "iwl-modparams.h" 55 #include "iwl-prph.h" 56 57 #include "dev.h" 58 #include "calib.h" 59 #include "agn.h" 60 61 62 /****************************************************************************** 63 * 64 * module boiler plate 65 * 66 ******************************************************************************/ 67 68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" 69 MODULE_DESCRIPTION(DRV_DESCRIPTION); 70 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 71 MODULE_LICENSE("GPL"); 72 73 /* Please keep this array *SORTED* by hex value. 74 * Access is done through binary search. 75 * A warning will be triggered on violation. 76 */ 77 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = { 78 HCMD_NAME(REPLY_ALIVE), 79 HCMD_NAME(REPLY_ERROR), 80 HCMD_NAME(REPLY_ECHO), 81 HCMD_NAME(REPLY_RXON), 82 HCMD_NAME(REPLY_RXON_ASSOC), 83 HCMD_NAME(REPLY_QOS_PARAM), 84 HCMD_NAME(REPLY_RXON_TIMING), 85 HCMD_NAME(REPLY_ADD_STA), 86 HCMD_NAME(REPLY_REMOVE_STA), 87 HCMD_NAME(REPLY_REMOVE_ALL_STA), 88 HCMD_NAME(REPLY_TX), 89 HCMD_NAME(REPLY_TXFIFO_FLUSH), 90 HCMD_NAME(REPLY_WEPKEY), 91 HCMD_NAME(REPLY_LEDS_CMD), 92 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD), 93 HCMD_NAME(COEX_PRIORITY_TABLE_CMD), 94 HCMD_NAME(COEX_MEDIUM_NOTIFICATION), 95 HCMD_NAME(COEX_EVENT_CMD), 96 HCMD_NAME(TEMPERATURE_NOTIFICATION), 97 HCMD_NAME(CALIBRATION_CFG_CMD), 98 HCMD_NAME(CALIBRATION_RES_NOTIFICATION), 99 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION), 100 HCMD_NAME(REPLY_QUIET_CMD), 101 HCMD_NAME(REPLY_CHANNEL_SWITCH), 102 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION), 103 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD), 104 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION), 105 HCMD_NAME(POWER_TABLE_CMD), 106 HCMD_NAME(PM_SLEEP_NOTIFICATION), 107 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC), 108 HCMD_NAME(REPLY_SCAN_CMD), 109 HCMD_NAME(REPLY_SCAN_ABORT_CMD), 110 HCMD_NAME(SCAN_START_NOTIFICATION), 111 HCMD_NAME(SCAN_RESULTS_NOTIFICATION), 112 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION), 113 HCMD_NAME(BEACON_NOTIFICATION), 114 HCMD_NAME(REPLY_TX_BEACON), 115 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION), 116 HCMD_NAME(REPLY_TX_POWER_DBM_CMD), 117 HCMD_NAME(QUIET_NOTIFICATION), 118 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD), 119 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1), 120 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 121 HCMD_NAME(MEASURE_ABORT_NOTIFICATION), 122 HCMD_NAME(REPLY_BT_CONFIG), 123 HCMD_NAME(REPLY_STATISTICS_CMD), 124 HCMD_NAME(STATISTICS_NOTIFICATION), 125 HCMD_NAME(REPLY_CARD_STATE_CMD), 126 HCMD_NAME(CARD_STATE_NOTIFICATION), 127 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 128 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD), 129 HCMD_NAME(SENSITIVITY_CMD), 130 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD), 131 HCMD_NAME(REPLY_WIPAN_PARAMS), 132 HCMD_NAME(REPLY_WIPAN_RXON), 133 HCMD_NAME(REPLY_WIPAN_RXON_TIMING), 134 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC), 135 HCMD_NAME(REPLY_WIPAN_QOS_PARAM), 136 HCMD_NAME(REPLY_WIPAN_WEPKEY), 137 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH), 138 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION), 139 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE), 140 HCMD_NAME(REPLY_RX_PHY_CMD), 141 HCMD_NAME(REPLY_RX_MPDU_CMD), 142 HCMD_NAME(REPLY_RX), 143 HCMD_NAME(REPLY_COMPRESSED_BA), 144 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE), 145 HCMD_NAME(REPLY_BT_COEX_PROT_ENV), 146 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF), 147 HCMD_NAME(REPLY_D3_CONFIG), 148 HCMD_NAME(REPLY_WOWLAN_PATTERNS), 149 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER), 150 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS), 151 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS), 152 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL), 153 HCMD_NAME(REPLY_WOWLAN_GET_STATUS), 154 }; 155 156 static const struct iwl_hcmd_arr iwl_dvm_groups[] = { 157 [0x0] = HCMD_ARR(iwl_dvm_cmd_names), 158 }; 159 160 static const struct iwl_op_mode_ops iwl_dvm_ops; 161 162 void iwl_update_chain_flags(struct iwl_priv *priv) 163 { 164 struct iwl_rxon_context *ctx; 165 166 for_each_context(priv, ctx) { 167 iwlagn_set_rxon_chain(priv, ctx); 168 if (ctx->active.rx_chain != ctx->staging.rx_chain) 169 iwlagn_commit_rxon(priv, ctx); 170 } 171 } 172 173 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ 174 static void iwl_set_beacon_tim(struct iwl_priv *priv, 175 struct iwl_tx_beacon_cmd *tx_beacon_cmd, 176 u8 *beacon, u32 frame_size) 177 { 178 u16 tim_idx; 179 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 180 181 /* 182 * The index is relative to frame start but we start looking at the 183 * variable-length part of the beacon. 184 */ 185 tim_idx = mgmt->u.beacon.variable - beacon; 186 187 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 188 while ((tim_idx < (frame_size - 2)) && 189 (beacon[tim_idx] != WLAN_EID_TIM)) 190 tim_idx += beacon[tim_idx+1] + 2; 191 192 /* If TIM field was found, set variables */ 193 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 194 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); 195 tx_beacon_cmd->tim_size = beacon[tim_idx+1]; 196 } else 197 IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); 198 } 199 200 int iwlagn_send_beacon_cmd(struct iwl_priv *priv) 201 { 202 struct iwl_tx_beacon_cmd *tx_beacon_cmd; 203 struct iwl_host_cmd cmd = { 204 .id = REPLY_TX_BEACON, 205 }; 206 struct ieee80211_tx_info *info; 207 u32 frame_size; 208 u32 rate_flags; 209 u32 rate; 210 211 /* 212 * We have to set up the TX command, the TX Beacon command, and the 213 * beacon contents. 214 */ 215 216 lockdep_assert_held(&priv->mutex); 217 218 if (!priv->beacon_ctx) { 219 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); 220 return 0; 221 } 222 223 if (WARN_ON(!priv->beacon_skb)) 224 return -EINVAL; 225 226 /* Allocate beacon command */ 227 if (!priv->beacon_cmd) 228 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); 229 tx_beacon_cmd = priv->beacon_cmd; 230 if (!tx_beacon_cmd) 231 return -ENOMEM; 232 233 frame_size = priv->beacon_skb->len; 234 235 /* Set up TX command fields */ 236 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); 237 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; 238 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; 239 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | 240 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; 241 242 /* Set up TX beacon command fields */ 243 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, 244 frame_size); 245 246 /* Set up packet rate and flags */ 247 info = IEEE80211_SKB_CB(priv->beacon_skb); 248 249 /* 250 * Let's set up the rate at least somewhat correctly; 251 * it will currently not actually be used by the uCode, 252 * it uses the broadcast station's rate instead. 253 */ 254 if (info->control.rates[0].idx < 0 || 255 info->control.rates[0].flags & IEEE80211_TX_RC_MCS) 256 rate = 0; 257 else 258 rate = info->control.rates[0].idx; 259 260 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, 261 priv->nvm_data->valid_tx_ant); 262 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); 263 264 /* In mac80211, rates for 5 GHz start at 0 */ 265 if (info->band == NL80211_BAND_5GHZ) 266 rate += IWL_FIRST_OFDM_RATE; 267 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) 268 rate_flags |= RATE_MCS_CCK_MSK; 269 270 tx_beacon_cmd->tx.rate_n_flags = 271 iwl_hw_set_rate_n_flags(rate, rate_flags); 272 273 /* Submit command */ 274 cmd.len[0] = sizeof(*tx_beacon_cmd); 275 cmd.data[0] = tx_beacon_cmd; 276 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 277 cmd.len[1] = frame_size; 278 cmd.data[1] = priv->beacon_skb->data; 279 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; 280 281 return iwl_dvm_send_cmd(priv, &cmd); 282 } 283 284 static void iwl_bg_beacon_update(struct work_struct *work) 285 { 286 struct iwl_priv *priv = 287 container_of(work, struct iwl_priv, beacon_update); 288 struct sk_buff *beacon; 289 290 mutex_lock(&priv->mutex); 291 if (!priv->beacon_ctx) { 292 IWL_ERR(priv, "updating beacon w/o beacon context!\n"); 293 goto out; 294 } 295 296 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { 297 /* 298 * The ucode will send beacon notifications even in 299 * IBSS mode, but we don't want to process them. But 300 * we need to defer the type check to here due to 301 * requiring locking around the beacon_ctx access. 302 */ 303 goto out; 304 } 305 306 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ 307 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); 308 if (!beacon) { 309 IWL_ERR(priv, "update beacon failed -- keeping old\n"); 310 goto out; 311 } 312 313 /* new beacon skb is allocated every time; dispose previous.*/ 314 dev_kfree_skb(priv->beacon_skb); 315 316 priv->beacon_skb = beacon; 317 318 iwlagn_send_beacon_cmd(priv); 319 out: 320 mutex_unlock(&priv->mutex); 321 } 322 323 static void iwl_bg_bt_runtime_config(struct work_struct *work) 324 { 325 struct iwl_priv *priv = 326 container_of(work, struct iwl_priv, bt_runtime_config); 327 328 mutex_lock(&priv->mutex); 329 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 330 goto out; 331 332 /* dont send host command if rf-kill is on */ 333 if (!iwl_is_ready_rf(priv)) 334 goto out; 335 336 iwlagn_send_advance_bt_config(priv); 337 out: 338 mutex_unlock(&priv->mutex); 339 } 340 341 static void iwl_bg_bt_full_concurrency(struct work_struct *work) 342 { 343 struct iwl_priv *priv = 344 container_of(work, struct iwl_priv, bt_full_concurrency); 345 struct iwl_rxon_context *ctx; 346 347 mutex_lock(&priv->mutex); 348 349 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 350 goto out; 351 352 /* dont send host command if rf-kill is on */ 353 if (!iwl_is_ready_rf(priv)) 354 goto out; 355 356 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", 357 priv->bt_full_concurrent ? 358 "full concurrency" : "3-wire"); 359 360 /* 361 * LQ & RXON updated cmds must be sent before BT Config cmd 362 * to avoid 3-wire collisions 363 */ 364 for_each_context(priv, ctx) { 365 iwlagn_set_rxon_chain(priv, ctx); 366 iwlagn_commit_rxon(priv, ctx); 367 } 368 369 iwlagn_send_advance_bt_config(priv); 370 out: 371 mutex_unlock(&priv->mutex); 372 } 373 374 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) 375 { 376 struct iwl_statistics_cmd statistics_cmd = { 377 .configuration_flags = 378 clear ? IWL_STATS_CONF_CLEAR_STATS : 0, 379 }; 380 381 if (flags & CMD_ASYNC) 382 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 383 CMD_ASYNC, 384 sizeof(struct iwl_statistics_cmd), 385 &statistics_cmd); 386 else 387 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0, 388 sizeof(struct iwl_statistics_cmd), 389 &statistics_cmd); 390 } 391 392 /** 393 * iwl_bg_statistics_periodic - Timer callback to queue statistics 394 * 395 * This callback is provided in order to send a statistics request. 396 * 397 * This timer function is continually reset to execute within 398 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION 399 * was received. We need to ensure we receive the statistics in order 400 * to update the temperature used for calibrating the TXPOWER. 401 */ 402 static void iwl_bg_statistics_periodic(struct timer_list *t) 403 { 404 struct iwl_priv *priv = from_timer(priv, t, statistics_periodic); 405 406 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 407 return; 408 409 /* dont send host command if rf-kill is on */ 410 if (!iwl_is_ready_rf(priv)) 411 return; 412 413 iwl_send_statistics_request(priv, CMD_ASYNC, false); 414 } 415 416 417 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, 418 u32 start_idx, u32 num_events, 419 u32 capacity, u32 mode) 420 { 421 u32 i; 422 u32 ptr; /* SRAM byte address of log data */ 423 u32 ev, time, data; /* event log data */ 424 unsigned long reg_flags; 425 426 if (mode == 0) 427 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); 428 else 429 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); 430 431 /* Make sure device is powered up for SRAM reads */ 432 if (!iwl_trans_grab_nic_access(priv->trans, ®_flags)) 433 return; 434 435 /* Set starting address; reads will auto-increment */ 436 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); 437 438 /* 439 * Refuse to read more than would have fit into the log from 440 * the current start_idx. This used to happen due to the race 441 * described below, but now WARN because the code below should 442 * prevent it from happening here. 443 */ 444 if (WARN_ON(num_events > capacity - start_idx)) 445 num_events = capacity - start_idx; 446 447 /* 448 * "time" is actually "data" for mode 0 (no timestamp). 449 * place event id # at far right for easier visual parsing. 450 */ 451 for (i = 0; i < num_events; i++) { 452 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 453 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 454 if (mode == 0) { 455 trace_iwlwifi_dev_ucode_cont_event( 456 priv->trans->dev, 0, time, ev); 457 } else { 458 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 459 trace_iwlwifi_dev_ucode_cont_event( 460 priv->trans->dev, time, data, ev); 461 } 462 } 463 /* Allow device to power down */ 464 iwl_trans_release_nic_access(priv->trans, ®_flags); 465 } 466 467 static void iwl_continuous_event_trace(struct iwl_priv *priv) 468 { 469 u32 capacity; /* event log capacity in # entries */ 470 struct { 471 u32 capacity; 472 u32 mode; 473 u32 wrap_counter; 474 u32 write_counter; 475 } __packed read; 476 u32 base; /* SRAM byte address of event log header */ 477 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 478 u32 num_wraps; /* # times uCode wrapped to top of log */ 479 u32 next_entry; /* index of next entry to be written by uCode */ 480 481 base = priv->device_pointers.log_event_table; 482 if (iwlagn_hw_valid_rtc_data_addr(base)) { 483 iwl_trans_read_mem_bytes(priv->trans, base, 484 &read, sizeof(read)); 485 capacity = read.capacity; 486 mode = read.mode; 487 num_wraps = read.wrap_counter; 488 next_entry = read.write_counter; 489 } else 490 return; 491 492 /* 493 * Unfortunately, the uCode doesn't use temporary variables. 494 * Therefore, it can happen that we read next_entry == capacity, 495 * which really means next_entry == 0. 496 */ 497 if (unlikely(next_entry == capacity)) 498 next_entry = 0; 499 /* 500 * Additionally, the uCode increases the write pointer before 501 * the wraps counter, so if the write pointer is smaller than 502 * the old write pointer (wrap occurred) but we read that no 503 * wrap occurred, we actually read between the next_entry and 504 * num_wraps update (this does happen in practice!!) -- take 505 * that into account by increasing num_wraps. 506 */ 507 if (unlikely(next_entry < priv->event_log.next_entry && 508 num_wraps == priv->event_log.num_wraps)) 509 num_wraps++; 510 511 if (num_wraps == priv->event_log.num_wraps) { 512 iwl_print_cont_event_trace( 513 priv, base, priv->event_log.next_entry, 514 next_entry - priv->event_log.next_entry, 515 capacity, mode); 516 517 priv->event_log.non_wraps_count++; 518 } else { 519 if (num_wraps - priv->event_log.num_wraps > 1) 520 priv->event_log.wraps_more_count++; 521 else 522 priv->event_log.wraps_once_count++; 523 524 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, 525 num_wraps - priv->event_log.num_wraps, 526 next_entry, priv->event_log.next_entry); 527 528 if (next_entry < priv->event_log.next_entry) { 529 iwl_print_cont_event_trace( 530 priv, base, priv->event_log.next_entry, 531 capacity - priv->event_log.next_entry, 532 capacity, mode); 533 534 iwl_print_cont_event_trace( 535 priv, base, 0, next_entry, capacity, mode); 536 } else { 537 iwl_print_cont_event_trace( 538 priv, base, next_entry, 539 capacity - next_entry, 540 capacity, mode); 541 542 iwl_print_cont_event_trace( 543 priv, base, 0, next_entry, capacity, mode); 544 } 545 } 546 547 priv->event_log.num_wraps = num_wraps; 548 priv->event_log.next_entry = next_entry; 549 } 550 551 /** 552 * iwl_bg_ucode_trace - Timer callback to log ucode event 553 * 554 * The timer is continually set to execute every 555 * UCODE_TRACE_PERIOD milliseconds after the last timer expired 556 * this function is to perform continuous uCode event logging operation 557 * if enabled 558 */ 559 static void iwl_bg_ucode_trace(struct timer_list *t) 560 { 561 struct iwl_priv *priv = from_timer(priv, t, ucode_trace); 562 563 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 564 return; 565 566 if (priv->event_log.ucode_trace) { 567 iwl_continuous_event_trace(priv); 568 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ 569 mod_timer(&priv->ucode_trace, 570 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); 571 } 572 } 573 574 static void iwl_bg_tx_flush(struct work_struct *work) 575 { 576 struct iwl_priv *priv = 577 container_of(work, struct iwl_priv, tx_flush); 578 579 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 580 return; 581 582 /* do nothing if rf-kill is on */ 583 if (!iwl_is_ready_rf(priv)) 584 return; 585 586 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); 587 iwlagn_dev_txfifo_flush(priv); 588 } 589 590 /* 591 * queue/FIFO/AC mapping definitions 592 */ 593 594 static const u8 iwlagn_bss_ac_to_fifo[] = { 595 IWL_TX_FIFO_VO, 596 IWL_TX_FIFO_VI, 597 IWL_TX_FIFO_BE, 598 IWL_TX_FIFO_BK, 599 }; 600 601 static const u8 iwlagn_bss_ac_to_queue[] = { 602 0, 1, 2, 3, 603 }; 604 605 static const u8 iwlagn_pan_ac_to_fifo[] = { 606 IWL_TX_FIFO_VO_IPAN, 607 IWL_TX_FIFO_VI_IPAN, 608 IWL_TX_FIFO_BE_IPAN, 609 IWL_TX_FIFO_BK_IPAN, 610 }; 611 612 static const u8 iwlagn_pan_ac_to_queue[] = { 613 7, 6, 5, 4, 614 }; 615 616 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) 617 { 618 int i; 619 620 /* 621 * The default context is always valid, 622 * the PAN context depends on uCode. 623 */ 624 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); 625 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) 626 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 627 628 for (i = 0; i < NUM_IWL_RXON_CTX; i++) 629 priv->contexts[i].ctxid = i; 630 631 priv->contexts[IWL_RXON_CTX_BSS].always_active = true; 632 priv->contexts[IWL_RXON_CTX_BSS].is_active = true; 633 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; 634 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; 635 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; 636 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; 637 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; 638 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; 639 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 640 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = 641 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR); 642 priv->contexts[IWL_RXON_CTX_BSS].interface_modes = 643 BIT(NL80211_IFTYPE_STATION); 644 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; 645 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; 646 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; 647 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; 648 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, 649 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); 650 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, 651 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); 652 653 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; 654 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = 655 REPLY_WIPAN_RXON_TIMING; 656 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = 657 REPLY_WIPAN_RXON_ASSOC; 658 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; 659 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; 660 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; 661 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; 662 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; 663 priv->contexts[IWL_RXON_CTX_PAN].interface_modes = 664 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); 665 666 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; 667 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; 668 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; 669 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, 670 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); 671 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, 672 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); 673 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; 674 675 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); 676 } 677 678 static void iwl_rf_kill_ct_config(struct iwl_priv *priv) 679 { 680 struct iwl_ct_kill_config cmd; 681 struct iwl_ct_kill_throttling_config adv_cmd; 682 int ret = 0; 683 684 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 685 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); 686 687 priv->thermal_throttle.ct_kill_toggle = false; 688 689 if (priv->lib->support_ct_kill_exit) { 690 adv_cmd.critical_temperature_enter = 691 cpu_to_le32(priv->hw_params.ct_kill_threshold); 692 adv_cmd.critical_temperature_exit = 693 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); 694 695 ret = iwl_dvm_send_cmd_pdu(priv, 696 REPLY_CT_KILL_CONFIG_CMD, 697 0, sizeof(adv_cmd), &adv_cmd); 698 if (ret) 699 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 700 else 701 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 702 "succeeded, critical temperature enter is %d," 703 "exit is %d\n", 704 priv->hw_params.ct_kill_threshold, 705 priv->hw_params.ct_kill_exit_threshold); 706 } else { 707 cmd.critical_temperature_R = 708 cpu_to_le32(priv->hw_params.ct_kill_threshold); 709 710 ret = iwl_dvm_send_cmd_pdu(priv, 711 REPLY_CT_KILL_CONFIG_CMD, 712 0, sizeof(cmd), &cmd); 713 if (ret) 714 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 715 else 716 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 717 "succeeded, " 718 "critical temperature is %d\n", 719 priv->hw_params.ct_kill_threshold); 720 } 721 } 722 723 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) 724 { 725 struct iwl_calib_cfg_cmd calib_cfg_cmd; 726 struct iwl_host_cmd cmd = { 727 .id = CALIBRATION_CFG_CMD, 728 .len = { sizeof(struct iwl_calib_cfg_cmd), }, 729 .data = { &calib_cfg_cmd, }, 730 }; 731 732 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); 733 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; 734 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); 735 736 return iwl_dvm_send_cmd(priv, &cmd); 737 } 738 739 740 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) 741 { 742 struct iwl_tx_ant_config_cmd tx_ant_cmd = { 743 .valid = cpu_to_le32(valid_tx_ant), 744 }; 745 746 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { 747 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); 748 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0, 749 sizeof(struct iwl_tx_ant_config_cmd), 750 &tx_ant_cmd); 751 } else { 752 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); 753 return -EOPNOTSUPP; 754 } 755 } 756 757 static void iwl_send_bt_config(struct iwl_priv *priv) 758 { 759 struct iwl_bt_cmd bt_cmd = { 760 .lead_time = BT_LEAD_TIME_DEF, 761 .max_kill = BT_MAX_KILL_DEF, 762 .kill_ack_mask = 0, 763 .kill_cts_mask = 0, 764 }; 765 766 if (!iwlwifi_mod_params.bt_coex_active) 767 bt_cmd.flags = BT_COEX_DISABLE; 768 else 769 bt_cmd.flags = BT_COEX_ENABLE; 770 771 priv->bt_enable_flag = bt_cmd.flags; 772 IWL_DEBUG_INFO(priv, "BT coex %s\n", 773 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); 774 775 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 776 0, sizeof(struct iwl_bt_cmd), &bt_cmd)) 777 IWL_ERR(priv, "failed to send BT Coex Config\n"); 778 } 779 780 /** 781 * iwl_alive_start - called after REPLY_ALIVE notification received 782 * from protocol/runtime uCode (initialization uCode's 783 * Alive gets handled by iwl_init_alive_start()). 784 */ 785 int iwl_alive_start(struct iwl_priv *priv) 786 { 787 int ret = 0; 788 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 789 790 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); 791 792 /* After the ALIVE response, we can send host commands to the uCode */ 793 set_bit(STATUS_ALIVE, &priv->status); 794 795 if (iwl_is_rfkill(priv)) 796 return -ERFKILL; 797 798 if (priv->event_log.ucode_trace) { 799 /* start collecting data now */ 800 mod_timer(&priv->ucode_trace, jiffies); 801 } 802 803 /* download priority table before any calibration request */ 804 if (priv->lib->bt_params && 805 priv->lib->bt_params->advanced_bt_coexist) { 806 /* Configure Bluetooth device coexistence support */ 807 if (priv->lib->bt_params->bt_sco_disable) 808 priv->bt_enable_pspoll = false; 809 else 810 priv->bt_enable_pspoll = true; 811 812 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 813 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 814 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 815 iwlagn_send_advance_bt_config(priv); 816 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; 817 priv->cur_rssi_ctx = NULL; 818 819 iwl_send_prio_tbl(priv); 820 821 /* FIXME: w/a to force change uCode BT state machine */ 822 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, 823 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 824 if (ret) 825 return ret; 826 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, 827 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 828 if (ret) 829 return ret; 830 } else if (priv->lib->bt_params) { 831 /* 832 * default is 2-wire BT coexexistence support 833 */ 834 iwl_send_bt_config(priv); 835 } 836 837 /* 838 * Perform runtime calibrations, including DC calibration. 839 */ 840 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); 841 842 ieee80211_wake_queues(priv->hw); 843 844 /* Configure Tx antenna selection based on H/W config */ 845 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant); 846 847 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { 848 struct iwl_rxon_cmd *active_rxon = 849 (struct iwl_rxon_cmd *)&ctx->active; 850 /* apply any changes in staging */ 851 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; 852 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; 853 } else { 854 struct iwl_rxon_context *tmp; 855 /* Initialize our rx_config data */ 856 for_each_context(priv, tmp) 857 iwl_connection_init_rx_config(priv, tmp); 858 859 iwlagn_set_rxon_chain(priv, ctx); 860 } 861 862 if (!priv->wowlan) { 863 /* WoWLAN ucode will not reply in the same way, skip it */ 864 iwl_reset_run_time_calib(priv); 865 } 866 867 set_bit(STATUS_READY, &priv->status); 868 869 /* Configure the adapter for unassociated operation */ 870 ret = iwlagn_commit_rxon(priv, ctx); 871 if (ret) 872 return ret; 873 874 /* At this point, the NIC is initialized and operational */ 875 iwl_rf_kill_ct_config(priv); 876 877 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); 878 879 return iwl_power_update_mode(priv, true); 880 } 881 882 /** 883 * iwl_clear_driver_stations - clear knowledge of all stations from driver 884 * @priv: iwl priv struct 885 * 886 * This is called during iwl_down() to make sure that in the case 887 * we're coming there from a hardware restart mac80211 will be 888 * able to reconfigure stations -- if we're getting there in the 889 * normal down flow then the stations will already be cleared. 890 */ 891 static void iwl_clear_driver_stations(struct iwl_priv *priv) 892 { 893 struct iwl_rxon_context *ctx; 894 895 spin_lock_bh(&priv->sta_lock); 896 memset(priv->stations, 0, sizeof(priv->stations)); 897 priv->num_stations = 0; 898 899 priv->ucode_key_table = 0; 900 901 for_each_context(priv, ctx) { 902 /* 903 * Remove all key information that is not stored as part 904 * of station information since mac80211 may not have had 905 * a chance to remove all the keys. When device is 906 * reconfigured by mac80211 after an error all keys will 907 * be reconfigured. 908 */ 909 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 910 ctx->key_mapping_keys = 0; 911 } 912 913 spin_unlock_bh(&priv->sta_lock); 914 } 915 916 void iwl_down(struct iwl_priv *priv) 917 { 918 int exit_pending; 919 920 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); 921 922 lockdep_assert_held(&priv->mutex); 923 924 iwl_scan_cancel_timeout(priv, 200); 925 926 exit_pending = 927 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); 928 929 iwl_clear_ucode_stations(priv, NULL); 930 iwl_dealloc_bcast_stations(priv); 931 iwl_clear_driver_stations(priv); 932 933 /* reset BT coex data */ 934 priv->bt_status = 0; 935 priv->cur_rssi_ctx = NULL; 936 priv->bt_is_sco = 0; 937 if (priv->lib->bt_params) 938 priv->bt_traffic_load = 939 priv->lib->bt_params->bt_init_traffic_load; 940 else 941 priv->bt_traffic_load = 0; 942 priv->bt_full_concurrent = false; 943 priv->bt_ci_compliance = 0; 944 945 /* Wipe out the EXIT_PENDING status bit if we are not actually 946 * exiting the module */ 947 if (!exit_pending) 948 clear_bit(STATUS_EXIT_PENDING, &priv->status); 949 950 if (priv->mac80211_registered) 951 ieee80211_stop_queues(priv->hw); 952 953 priv->ucode_loaded = false; 954 iwl_trans_stop_device(priv->trans); 955 956 /* Set num_aux_in_flight must be done after the transport is stopped */ 957 atomic_set(&priv->num_aux_in_flight, 0); 958 959 /* Clear out all status bits but a few that are stable across reset */ 960 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << 961 STATUS_RF_KILL_HW | 962 test_bit(STATUS_FW_ERROR, &priv->status) << 963 STATUS_FW_ERROR | 964 test_bit(STATUS_EXIT_PENDING, &priv->status) << 965 STATUS_EXIT_PENDING; 966 967 dev_kfree_skb(priv->beacon_skb); 968 priv->beacon_skb = NULL; 969 } 970 971 /***************************************************************************** 972 * 973 * Workqueue callbacks 974 * 975 *****************************************************************************/ 976 977 static void iwl_bg_run_time_calib_work(struct work_struct *work) 978 { 979 struct iwl_priv *priv = container_of(work, struct iwl_priv, 980 run_time_calib_work); 981 982 mutex_lock(&priv->mutex); 983 984 if (test_bit(STATUS_EXIT_PENDING, &priv->status) || 985 test_bit(STATUS_SCANNING, &priv->status)) { 986 mutex_unlock(&priv->mutex); 987 return; 988 } 989 990 if (priv->start_calib) { 991 iwl_chain_noise_calibration(priv); 992 iwl_sensitivity_calibration(priv); 993 } 994 995 mutex_unlock(&priv->mutex); 996 } 997 998 void iwlagn_prepare_restart(struct iwl_priv *priv) 999 { 1000 bool bt_full_concurrent; 1001 u8 bt_ci_compliance; 1002 u8 bt_load; 1003 u8 bt_status; 1004 bool bt_is_sco; 1005 int i; 1006 1007 lockdep_assert_held(&priv->mutex); 1008 1009 priv->is_open = 0; 1010 1011 /* 1012 * __iwl_down() will clear the BT status variables, 1013 * which is correct, but when we restart we really 1014 * want to keep them so restore them afterwards. 1015 * 1016 * The restart process will later pick them up and 1017 * re-configure the hw when we reconfigure the BT 1018 * command. 1019 */ 1020 bt_full_concurrent = priv->bt_full_concurrent; 1021 bt_ci_compliance = priv->bt_ci_compliance; 1022 bt_load = priv->bt_traffic_load; 1023 bt_status = priv->bt_status; 1024 bt_is_sco = priv->bt_is_sco; 1025 1026 iwl_down(priv); 1027 1028 priv->bt_full_concurrent = bt_full_concurrent; 1029 priv->bt_ci_compliance = bt_ci_compliance; 1030 priv->bt_traffic_load = bt_load; 1031 priv->bt_status = bt_status; 1032 priv->bt_is_sco = bt_is_sco; 1033 1034 /* reset aggregation queues */ 1035 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) 1036 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1037 /* and stop counts */ 1038 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 1039 atomic_set(&priv->queue_stop_count[i], 0); 1040 1041 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); 1042 } 1043 1044 static void iwl_bg_restart(struct work_struct *data) 1045 { 1046 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); 1047 1048 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 1049 return; 1050 1051 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { 1052 mutex_lock(&priv->mutex); 1053 iwlagn_prepare_restart(priv); 1054 mutex_unlock(&priv->mutex); 1055 iwl_cancel_deferred_work(priv); 1056 if (priv->mac80211_registered) 1057 ieee80211_restart_hw(priv->hw); 1058 else 1059 IWL_ERR(priv, 1060 "Cannot request restart before registrating with mac80211\n"); 1061 } else { 1062 WARN_ON(1); 1063 } 1064 } 1065 1066 /***************************************************************************** 1067 * 1068 * driver setup and teardown 1069 * 1070 *****************************************************************************/ 1071 1072 static void iwl_setup_deferred_work(struct iwl_priv *priv) 1073 { 1074 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0); 1075 1076 INIT_WORK(&priv->restart, iwl_bg_restart); 1077 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); 1078 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); 1079 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); 1080 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); 1081 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); 1082 1083 iwl_setup_scan_deferred_work(priv); 1084 1085 if (priv->lib->bt_params) 1086 iwlagn_bt_setup_deferred_work(priv); 1087 1088 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0); 1089 1090 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0); 1091 } 1092 1093 void iwl_cancel_deferred_work(struct iwl_priv *priv) 1094 { 1095 if (priv->lib->bt_params) 1096 iwlagn_bt_cancel_deferred_work(priv); 1097 1098 cancel_work_sync(&priv->run_time_calib_work); 1099 cancel_work_sync(&priv->beacon_update); 1100 1101 iwl_cancel_scan_deferred_work(priv); 1102 1103 cancel_work_sync(&priv->bt_full_concurrency); 1104 cancel_work_sync(&priv->bt_runtime_config); 1105 1106 del_timer_sync(&priv->statistics_periodic); 1107 del_timer_sync(&priv->ucode_trace); 1108 } 1109 1110 static int iwl_init_drv(struct iwl_priv *priv) 1111 { 1112 spin_lock_init(&priv->sta_lock); 1113 1114 mutex_init(&priv->mutex); 1115 1116 INIT_LIST_HEAD(&priv->calib_results); 1117 1118 priv->band = NL80211_BAND_2GHZ; 1119 1120 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold; 1121 1122 priv->iw_mode = NL80211_IFTYPE_STATION; 1123 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; 1124 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; 1125 priv->agg_tids_count = 0; 1126 1127 priv->rx_statistics_jiffies = jiffies; 1128 1129 /* Choose which receivers/antennas to use */ 1130 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); 1131 1132 iwl_init_scan_params(priv); 1133 1134 /* init bt coex */ 1135 if (priv->lib->bt_params && 1136 priv->lib->bt_params->advanced_bt_coexist) { 1137 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 1138 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 1139 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 1140 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; 1141 priv->bt_duration = BT_DURATION_LIMIT_DEF; 1142 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; 1143 } 1144 1145 return 0; 1146 } 1147 1148 static void iwl_uninit_drv(struct iwl_priv *priv) 1149 { 1150 kfree(priv->scan_cmd); 1151 kfree(priv->beacon_cmd); 1152 kfree(rcu_dereference_raw(priv->noa_data)); 1153 iwl_calib_free_results(priv); 1154 #ifdef CONFIG_IWLWIFI_DEBUGFS 1155 kfree(priv->wowlan_sram); 1156 #endif 1157 } 1158 1159 static void iwl_set_hw_params(struct iwl_priv *priv) 1160 { 1161 if (priv->cfg->ht_params) 1162 priv->hw_params.use_rts_for_aggregation = 1163 priv->cfg->ht_params->use_rts_for_aggregation; 1164 1165 /* Device-specific setup */ 1166 priv->lib->set_hw_params(priv); 1167 } 1168 1169 1170 1171 /* show what optional capabilities we have */ 1172 static void iwl_option_config(struct iwl_priv *priv) 1173 { 1174 #ifdef CONFIG_IWLWIFI_DEBUG 1175 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); 1176 #else 1177 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); 1178 #endif 1179 1180 #ifdef CONFIG_IWLWIFI_DEBUGFS 1181 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); 1182 #else 1183 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); 1184 #endif 1185 1186 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING 1187 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); 1188 #else 1189 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); 1190 #endif 1191 } 1192 1193 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) 1194 { 1195 struct iwl_nvm_data *data = priv->nvm_data; 1196 1197 if (data->sku_cap_11n_enable && 1198 !priv->cfg->ht_params) { 1199 IWL_ERR(priv, "Invalid 11n configuration\n"); 1200 return -EINVAL; 1201 } 1202 1203 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable && 1204 !data->sku_cap_band_52ghz_enable) { 1205 IWL_ERR(priv, "Invalid device sku\n"); 1206 return -EINVAL; 1207 } 1208 1209 IWL_DEBUG_INFO(priv, 1210 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n", 1211 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled", 1212 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled", 1213 data->sku_cap_11n_enable ? "" : "NOT", "enabled"); 1214 1215 priv->hw_params.tx_chains_num = 1216 num_of_ant(data->valid_tx_ant); 1217 if (priv->cfg->rx_with_siso_diversity) 1218 priv->hw_params.rx_chains_num = 1; 1219 else 1220 priv->hw_params.rx_chains_num = 1221 num_of_ant(data->valid_rx_ant); 1222 1223 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", 1224 data->valid_tx_ant, 1225 data->valid_rx_ant); 1226 1227 return 0; 1228 } 1229 1230 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, 1231 const struct iwl_cfg *cfg, 1232 const struct iwl_fw *fw, 1233 struct dentry *dbgfs_dir) 1234 { 1235 struct iwl_priv *priv; 1236 struct ieee80211_hw *hw; 1237 struct iwl_op_mode *op_mode; 1238 u16 num_mac; 1239 u32 ucode_flags; 1240 struct iwl_trans_config trans_cfg = {}; 1241 static const u8 no_reclaim_cmds[] = { 1242 REPLY_RX_PHY_CMD, 1243 REPLY_RX_MPDU_CMD, 1244 REPLY_COMPRESSED_BA, 1245 STATISTICS_NOTIFICATION, 1246 REPLY_TX, 1247 }; 1248 int i; 1249 1250 /************************ 1251 * 1. Allocating HW data 1252 ************************/ 1253 hw = iwl_alloc_all(); 1254 if (!hw) { 1255 pr_err("%s: Cannot allocate network device\n", cfg->name); 1256 goto out; 1257 } 1258 1259 op_mode = hw->priv; 1260 op_mode->ops = &iwl_dvm_ops; 1261 priv = IWL_OP_MODE_GET_DVM(op_mode); 1262 priv->trans = trans; 1263 priv->dev = trans->dev; 1264 priv->cfg = cfg; 1265 priv->fw = fw; 1266 1267 switch (priv->cfg->device_family) { 1268 case IWL_DEVICE_FAMILY_1000: 1269 case IWL_DEVICE_FAMILY_100: 1270 priv->lib = &iwl_dvm_1000_cfg; 1271 break; 1272 case IWL_DEVICE_FAMILY_2000: 1273 priv->lib = &iwl_dvm_2000_cfg; 1274 break; 1275 case IWL_DEVICE_FAMILY_105: 1276 priv->lib = &iwl_dvm_105_cfg; 1277 break; 1278 case IWL_DEVICE_FAMILY_2030: 1279 case IWL_DEVICE_FAMILY_135: 1280 priv->lib = &iwl_dvm_2030_cfg; 1281 break; 1282 case IWL_DEVICE_FAMILY_5000: 1283 priv->lib = &iwl_dvm_5000_cfg; 1284 break; 1285 case IWL_DEVICE_FAMILY_5150: 1286 priv->lib = &iwl_dvm_5150_cfg; 1287 break; 1288 case IWL_DEVICE_FAMILY_6000: 1289 case IWL_DEVICE_FAMILY_6000i: 1290 priv->lib = &iwl_dvm_6000_cfg; 1291 break; 1292 case IWL_DEVICE_FAMILY_6005: 1293 priv->lib = &iwl_dvm_6005_cfg; 1294 break; 1295 case IWL_DEVICE_FAMILY_6050: 1296 case IWL_DEVICE_FAMILY_6150: 1297 priv->lib = &iwl_dvm_6050_cfg; 1298 break; 1299 case IWL_DEVICE_FAMILY_6030: 1300 priv->lib = &iwl_dvm_6030_cfg; 1301 break; 1302 default: 1303 break; 1304 } 1305 1306 if (WARN_ON(!priv->lib)) 1307 goto out_free_hw; 1308 1309 /* 1310 * Populate the state variables that the transport layer needs 1311 * to know about. 1312 */ 1313 trans_cfg.op_mode = op_mode; 1314 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 1315 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 1316 1317 switch (iwlwifi_mod_params.amsdu_size) { 1318 case IWL_AMSDU_DEF: 1319 case IWL_AMSDU_4K: 1320 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 1321 break; 1322 case IWL_AMSDU_8K: 1323 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 1324 break; 1325 case IWL_AMSDU_12K: 1326 default: 1327 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 1328 pr_err("Unsupported amsdu_size: %d\n", 1329 iwlwifi_mod_params.amsdu_size); 1330 } 1331 1332 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED; 1333 1334 trans_cfg.command_groups = iwl_dvm_groups; 1335 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups); 1336 1337 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM; 1338 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 1339 driver_data[2]); 1340 1341 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < 1342 priv->cfg->base_params->num_of_queues); 1343 1344 ucode_flags = fw->ucode_capa.flags; 1345 1346 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { 1347 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; 1348 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; 1349 } else { 1350 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1351 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1352 } 1353 1354 /* Configure transport layer */ 1355 iwl_trans_configure(priv->trans, &trans_cfg); 1356 1357 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 1358 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 1359 trans->command_groups = trans_cfg.command_groups; 1360 trans->command_groups_size = trans_cfg.command_groups_size; 1361 1362 /* At this point both hw and priv are allocated. */ 1363 1364 SET_IEEE80211_DEV(priv->hw, priv->trans->dev); 1365 1366 iwl_option_config(priv); 1367 1368 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); 1369 1370 /* is antenna coupling more than 35dB ? */ 1371 priv->bt_ant_couple_ok = 1372 (iwlwifi_mod_params.antenna_coupling > 1373 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? 1374 true : false; 1375 1376 /* bt channel inhibition enabled*/ 1377 priv->bt_ch_announce = true; 1378 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", 1379 (priv->bt_ch_announce) ? "On" : "Off"); 1380 1381 /* these spin locks will be used in apm_ops.init and EEPROM access 1382 * we should init now 1383 */ 1384 spin_lock_init(&priv->statistics.lock); 1385 1386 /*********************** 1387 * 2. Read REV register 1388 ***********************/ 1389 IWL_INFO(priv, "Detected %s, REV=0x%X\n", 1390 priv->cfg->name, priv->trans->hw_rev); 1391 1392 if (iwl_trans_start_hw(priv->trans)) 1393 goto out_free_hw; 1394 1395 /* Read the EEPROM */ 1396 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob, 1397 &priv->eeprom_blob_size)) { 1398 IWL_ERR(priv, "Unable to init EEPROM\n"); 1399 goto out_free_hw; 1400 } 1401 1402 /* Reset chip to save power until we load uCode during "up". */ 1403 iwl_trans_stop_device(priv->trans); 1404 1405 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg, 1406 priv->eeprom_blob, 1407 priv->eeprom_blob_size); 1408 if (!priv->nvm_data) 1409 goto out_free_eeprom_blob; 1410 1411 if (iwl_nvm_check_version(priv->nvm_data, priv->trans)) 1412 goto out_free_eeprom; 1413 1414 if (iwl_eeprom_init_hw_params(priv)) 1415 goto out_free_eeprom; 1416 1417 /* extract MAC Address */ 1418 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN); 1419 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); 1420 priv->hw->wiphy->addresses = priv->addresses; 1421 priv->hw->wiphy->n_addresses = 1; 1422 num_mac = priv->nvm_data->n_hw_addrs; 1423 if (num_mac > 1) { 1424 memcpy(priv->addresses[1].addr, priv->addresses[0].addr, 1425 ETH_ALEN); 1426 priv->addresses[1].addr[5]++; 1427 priv->hw->wiphy->n_addresses++; 1428 } 1429 1430 /************************ 1431 * 4. Setup HW constants 1432 ************************/ 1433 iwl_set_hw_params(priv); 1434 1435 if (!(priv->nvm_data->sku_cap_ipan_enable)) { 1436 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n"); 1437 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; 1438 /* 1439 * if not PAN, then don't support P2P -- might be a uCode 1440 * packaging bug or due to the eeprom check above 1441 */ 1442 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1443 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1444 1445 /* Configure transport layer again*/ 1446 iwl_trans_configure(priv->trans, &trans_cfg); 1447 } 1448 1449 /******************* 1450 * 5. Setup priv 1451 *******************/ 1452 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { 1453 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1454 if (i < IWLAGN_FIRST_AMPDU_QUEUE && 1455 i != IWL_DEFAULT_CMD_QUEUE_NUM && 1456 i != IWL_IPAN_CMD_QUEUE_NUM) 1457 priv->queue_to_mac80211[i] = i; 1458 atomic_set(&priv->queue_stop_count[i], 0); 1459 } 1460 1461 if (iwl_init_drv(priv)) 1462 goto out_free_eeprom; 1463 1464 /* At this point both hw and priv are initialized. */ 1465 1466 /******************** 1467 * 6. Setup services 1468 ********************/ 1469 iwl_setup_deferred_work(priv); 1470 iwl_setup_rx_handlers(priv); 1471 1472 iwl_power_initialize(priv); 1473 iwl_tt_initialize(priv); 1474 1475 snprintf(priv->hw->wiphy->fw_version, 1476 sizeof(priv->hw->wiphy->fw_version), 1477 "%s", fw->fw_version); 1478 1479 priv->new_scan_threshold_behaviour = 1480 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); 1481 1482 priv->phy_calib_chain_noise_reset_cmd = 1483 fw->ucode_capa.standard_phy_calibration_size; 1484 priv->phy_calib_chain_noise_gain_cmd = 1485 fw->ucode_capa.standard_phy_calibration_size + 1; 1486 1487 /* initialize all valid contexts */ 1488 iwl_init_context(priv, ucode_flags); 1489 1490 /************************************************** 1491 * This is still part of probe() in a sense... 1492 * 1493 * 7. Setup and register with mac80211 and debugfs 1494 **************************************************/ 1495 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa)) 1496 goto out_destroy_workqueue; 1497 1498 if (iwl_dbgfs_register(priv, dbgfs_dir)) 1499 goto out_mac80211_unregister; 1500 1501 return op_mode; 1502 1503 out_mac80211_unregister: 1504 iwlagn_mac_unregister(priv); 1505 out_destroy_workqueue: 1506 iwl_tt_exit(priv); 1507 iwl_cancel_deferred_work(priv); 1508 destroy_workqueue(priv->workqueue); 1509 priv->workqueue = NULL; 1510 iwl_uninit_drv(priv); 1511 out_free_eeprom_blob: 1512 kfree(priv->eeprom_blob); 1513 out_free_eeprom: 1514 kfree(priv->nvm_data); 1515 out_free_hw: 1516 ieee80211_free_hw(priv->hw); 1517 out: 1518 op_mode = NULL; 1519 return op_mode; 1520 } 1521 1522 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) 1523 { 1524 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1525 1526 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); 1527 1528 iwlagn_mac_unregister(priv); 1529 1530 iwl_tt_exit(priv); 1531 1532 kfree(priv->eeprom_blob); 1533 kfree(priv->nvm_data); 1534 1535 /*netif_stop_queue(dev); */ 1536 flush_workqueue(priv->workqueue); 1537 1538 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes 1539 * priv->workqueue... so we can't take down the workqueue 1540 * until now... */ 1541 destroy_workqueue(priv->workqueue); 1542 priv->workqueue = NULL; 1543 1544 iwl_uninit_drv(priv); 1545 1546 dev_kfree_skb(priv->beacon_skb); 1547 1548 iwl_trans_op_mode_leave(priv->trans); 1549 ieee80211_free_hw(priv->hw); 1550 } 1551 1552 static const char * const desc_lookup_text[] = { 1553 "OK", 1554 "FAIL", 1555 "BAD_PARAM", 1556 "BAD_CHECKSUM", 1557 "NMI_INTERRUPT_WDG", 1558 "SYSASSERT", 1559 "FATAL_ERROR", 1560 "BAD_COMMAND", 1561 "HW_ERROR_TUNE_LOCK", 1562 "HW_ERROR_TEMPERATURE", 1563 "ILLEGAL_CHAN_FREQ", 1564 "VCC_NOT_STABLE", 1565 "FH_ERROR", 1566 "NMI_INTERRUPT_HOST", 1567 "NMI_INTERRUPT_ACTION_PT", 1568 "NMI_INTERRUPT_UNKNOWN", 1569 "UCODE_VERSION_MISMATCH", 1570 "HW_ERROR_ABS_LOCK", 1571 "HW_ERROR_CAL_LOCK_FAIL", 1572 "NMI_INTERRUPT_INST_ACTION_PT", 1573 "NMI_INTERRUPT_DATA_ACTION_PT", 1574 "NMI_TRM_HW_ER", 1575 "NMI_INTERRUPT_TRM", 1576 "NMI_INTERRUPT_BREAK_POINT", 1577 "DEBUG_0", 1578 "DEBUG_1", 1579 "DEBUG_2", 1580 "DEBUG_3", 1581 }; 1582 1583 static struct { char *name; u8 num; } advanced_lookup[] = { 1584 { "NMI_INTERRUPT_WDG", 0x34 }, 1585 { "SYSASSERT", 0x35 }, 1586 { "UCODE_VERSION_MISMATCH", 0x37 }, 1587 { "BAD_COMMAND", 0x38 }, 1588 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 1589 { "FATAL_ERROR", 0x3D }, 1590 { "NMI_TRM_HW_ERR", 0x46 }, 1591 { "NMI_INTERRUPT_TRM", 0x4C }, 1592 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 1593 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 1594 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 1595 { "NMI_INTERRUPT_HOST", 0x66 }, 1596 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 1597 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 1598 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 1599 { "ADVANCED_SYSASSERT", 0 }, 1600 }; 1601 1602 static const char *desc_lookup(u32 num) 1603 { 1604 int i; 1605 int max = ARRAY_SIZE(desc_lookup_text); 1606 1607 if (num < max) 1608 return desc_lookup_text[num]; 1609 1610 max = ARRAY_SIZE(advanced_lookup) - 1; 1611 for (i = 0; i < max; i++) { 1612 if (advanced_lookup[i].num == num) 1613 break; 1614 } 1615 return advanced_lookup[i].name; 1616 } 1617 1618 #define ERROR_START_OFFSET (1 * sizeof(u32)) 1619 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 1620 1621 static void iwl_dump_nic_error_log(struct iwl_priv *priv) 1622 { 1623 struct iwl_trans *trans = priv->trans; 1624 u32 base; 1625 struct iwl_error_event_table table; 1626 1627 base = priv->device_pointers.error_event_table; 1628 if (priv->cur_ucode == IWL_UCODE_INIT) { 1629 if (!base) 1630 base = priv->fw->init_errlog_ptr; 1631 } else { 1632 if (!base) 1633 base = priv->fw->inst_errlog_ptr; 1634 } 1635 1636 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1637 IWL_ERR(priv, 1638 "Not valid error log pointer 0x%08X for %s uCode\n", 1639 base, 1640 (priv->cur_ucode == IWL_UCODE_INIT) 1641 ? "Init" : "RT"); 1642 return; 1643 } 1644 1645 /*TODO: Update dbgfs with ISR error stats obtained below */ 1646 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 1647 1648 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 1649 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 1650 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 1651 priv->status, table.valid); 1652 } 1653 1654 trace_iwlwifi_dev_ucode_error(trans->dev, &table, 0, table.brd_ver); 1655 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, 1656 desc_lookup(table.error_id)); 1657 IWL_ERR(priv, "0x%08X | uPc\n", table.pc); 1658 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); 1659 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); 1660 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); 1661 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); 1662 IWL_ERR(priv, "0x%08X | data1\n", table.data1); 1663 IWL_ERR(priv, "0x%08X | data2\n", table.data2); 1664 IWL_ERR(priv, "0x%08X | line\n", table.line); 1665 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); 1666 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); 1667 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); 1668 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); 1669 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); 1670 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); 1671 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); 1672 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); 1673 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); 1674 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); 1675 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); 1676 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); 1677 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); 1678 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); 1679 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); 1680 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); 1681 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); 1682 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); 1683 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); 1684 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 1685 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 1686 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 1687 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); 1688 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); 1689 } 1690 1691 #define EVENT_START_OFFSET (4 * sizeof(u32)) 1692 1693 /** 1694 * iwl_print_event_log - Dump error event log to syslog 1695 * 1696 */ 1697 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, 1698 u32 num_events, u32 mode, 1699 int pos, char **buf, size_t bufsz) 1700 { 1701 u32 i; 1702 u32 base; /* SRAM byte address of event log header */ 1703 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ 1704 u32 ptr; /* SRAM byte address of log data */ 1705 u32 ev, time, data; /* event log data */ 1706 unsigned long reg_flags; 1707 1708 struct iwl_trans *trans = priv->trans; 1709 1710 if (num_events == 0) 1711 return pos; 1712 1713 base = priv->device_pointers.log_event_table; 1714 if (priv->cur_ucode == IWL_UCODE_INIT) { 1715 if (!base) 1716 base = priv->fw->init_evtlog_ptr; 1717 } else { 1718 if (!base) 1719 base = priv->fw->inst_evtlog_ptr; 1720 } 1721 1722 if (mode == 0) 1723 event_size = 2 * sizeof(u32); 1724 else 1725 event_size = 3 * sizeof(u32); 1726 1727 ptr = base + EVENT_START_OFFSET + (start_idx * event_size); 1728 1729 /* Make sure device is powered up for SRAM reads */ 1730 if (!iwl_trans_grab_nic_access(trans, ®_flags)) 1731 return pos; 1732 1733 /* Set starting address; reads will auto-increment */ 1734 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); 1735 1736 /* "time" is actually "data" for mode 0 (no timestamp). 1737 * place event id # at far right for easier visual parsing. */ 1738 for (i = 0; i < num_events; i++) { 1739 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1740 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1741 if (mode == 0) { 1742 /* data, ev */ 1743 if (bufsz) { 1744 pos += scnprintf(*buf + pos, bufsz - pos, 1745 "EVT_LOG:0x%08x:%04u\n", 1746 time, ev); 1747 } else { 1748 trace_iwlwifi_dev_ucode_event(trans->dev, 0, 1749 time, ev); 1750 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", 1751 time, ev); 1752 } 1753 } else { 1754 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1755 if (bufsz) { 1756 pos += scnprintf(*buf + pos, bufsz - pos, 1757 "EVT_LOGT:%010u:0x%08x:%04u\n", 1758 time, data, ev); 1759 } else { 1760 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", 1761 time, data, ev); 1762 trace_iwlwifi_dev_ucode_event(trans->dev, time, 1763 data, ev); 1764 } 1765 } 1766 } 1767 1768 /* Allow device to power down */ 1769 iwl_trans_release_nic_access(trans, ®_flags); 1770 return pos; 1771 } 1772 1773 /** 1774 * iwl_print_last_event_logs - Dump the newest # of event log to syslog 1775 */ 1776 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, 1777 u32 num_wraps, u32 next_entry, 1778 u32 size, u32 mode, 1779 int pos, char **buf, size_t bufsz) 1780 { 1781 /* 1782 * display the newest DEFAULT_LOG_ENTRIES entries 1783 * i.e the entries just before the next ont that uCode would fill. 1784 */ 1785 if (num_wraps) { 1786 if (next_entry < size) { 1787 pos = iwl_print_event_log(priv, 1788 capacity - (size - next_entry), 1789 size - next_entry, mode, 1790 pos, buf, bufsz); 1791 pos = iwl_print_event_log(priv, 0, 1792 next_entry, mode, 1793 pos, buf, bufsz); 1794 } else 1795 pos = iwl_print_event_log(priv, next_entry - size, 1796 size, mode, pos, buf, bufsz); 1797 } else { 1798 if (next_entry < size) { 1799 pos = iwl_print_event_log(priv, 0, next_entry, 1800 mode, pos, buf, bufsz); 1801 } else { 1802 pos = iwl_print_event_log(priv, next_entry - size, 1803 size, mode, pos, buf, bufsz); 1804 } 1805 } 1806 return pos; 1807 } 1808 1809 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) 1810 1811 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, 1812 char **buf) 1813 { 1814 u32 base; /* SRAM byte address of event log header */ 1815 u32 capacity; /* event log capacity in # entries */ 1816 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 1817 u32 num_wraps; /* # times uCode wrapped to top of log */ 1818 u32 next_entry; /* index of next entry to be written by uCode */ 1819 u32 size; /* # entries that we'll print */ 1820 u32 logsize; 1821 int pos = 0; 1822 size_t bufsz = 0; 1823 struct iwl_trans *trans = priv->trans; 1824 1825 base = priv->device_pointers.log_event_table; 1826 if (priv->cur_ucode == IWL_UCODE_INIT) { 1827 logsize = priv->fw->init_evtlog_size; 1828 if (!base) 1829 base = priv->fw->init_evtlog_ptr; 1830 } else { 1831 logsize = priv->fw->inst_evtlog_size; 1832 if (!base) 1833 base = priv->fw->inst_evtlog_ptr; 1834 } 1835 1836 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1837 IWL_ERR(priv, 1838 "Invalid event log pointer 0x%08X for %s uCode\n", 1839 base, 1840 (priv->cur_ucode == IWL_UCODE_INIT) 1841 ? "Init" : "RT"); 1842 return -EINVAL; 1843 } 1844 1845 /* event log header */ 1846 capacity = iwl_trans_read_mem32(trans, base); 1847 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32))); 1848 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32))); 1849 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32))); 1850 1851 if (capacity > logsize) { 1852 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " 1853 "entries\n", capacity, logsize); 1854 capacity = logsize; 1855 } 1856 1857 if (next_entry > logsize) { 1858 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", 1859 next_entry, logsize); 1860 next_entry = logsize; 1861 } 1862 1863 size = num_wraps ? capacity : next_entry; 1864 1865 /* bail out if nothing in log */ 1866 if (size == 0) { 1867 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); 1868 return pos; 1869 } 1870 1871 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log) 1872 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) 1873 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; 1874 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", 1875 size); 1876 1877 #ifdef CONFIG_IWLWIFI_DEBUG 1878 if (buf) { 1879 if (full_log) 1880 bufsz = capacity * 48; 1881 else 1882 bufsz = size * 48; 1883 *buf = kmalloc(bufsz, GFP_KERNEL); 1884 if (!*buf) 1885 return -ENOMEM; 1886 } 1887 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) { 1888 /* 1889 * if uCode has wrapped back to top of log, 1890 * start at the oldest entry, 1891 * i.e the next one that uCode would fill. 1892 */ 1893 if (num_wraps) 1894 pos = iwl_print_event_log(priv, next_entry, 1895 capacity - next_entry, mode, 1896 pos, buf, bufsz); 1897 /* (then/else) start at top of log */ 1898 pos = iwl_print_event_log(priv, 0, 1899 next_entry, mode, pos, buf, bufsz); 1900 } else 1901 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1902 next_entry, size, mode, 1903 pos, buf, bufsz); 1904 #else 1905 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1906 next_entry, size, mode, 1907 pos, buf, bufsz); 1908 #endif 1909 return pos; 1910 } 1911 1912 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) 1913 { 1914 unsigned int reload_msec; 1915 unsigned long reload_jiffies; 1916 1917 if (iwl_have_debug_level(IWL_DL_FW_ERRORS)) 1918 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); 1919 1920 /* uCode is no longer loaded. */ 1921 priv->ucode_loaded = false; 1922 1923 /* Set the FW error flag -- cleared on iwl_down */ 1924 set_bit(STATUS_FW_ERROR, &priv->status); 1925 1926 iwl_abort_notification_waits(&priv->notif_wait); 1927 1928 /* Keep the restart process from trying to send host 1929 * commands by clearing the ready bit */ 1930 clear_bit(STATUS_READY, &priv->status); 1931 1932 if (!ondemand) { 1933 /* 1934 * If firmware keep reloading, then it indicate something 1935 * serious wrong and firmware having problem to recover 1936 * from it. Instead of keep trying which will fill the syslog 1937 * and hang the system, let's just stop it 1938 */ 1939 reload_jiffies = jiffies; 1940 reload_msec = jiffies_to_msecs((long) reload_jiffies - 1941 (long) priv->reload_jiffies); 1942 priv->reload_jiffies = reload_jiffies; 1943 if (reload_msec <= IWL_MIN_RELOAD_DURATION) { 1944 priv->reload_count++; 1945 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { 1946 IWL_ERR(priv, "BUG_ON, Stop restarting\n"); 1947 return; 1948 } 1949 } else 1950 priv->reload_count = 0; 1951 } 1952 1953 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { 1954 if (iwlwifi_mod_params.fw_restart) { 1955 IWL_DEBUG_FW_ERRORS(priv, 1956 "Restarting adapter due to uCode error.\n"); 1957 queue_work(priv->workqueue, &priv->restart); 1958 } else 1959 IWL_DEBUG_FW_ERRORS(priv, 1960 "Detected FW error, but not restarting\n"); 1961 } 1962 } 1963 1964 static void iwl_nic_error(struct iwl_op_mode *op_mode) 1965 { 1966 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1967 1968 IWL_ERR(priv, "Loaded firmware version: %s\n", 1969 priv->fw->fw_version); 1970 1971 iwl_dump_nic_error_log(priv); 1972 iwl_dump_nic_event_log(priv, false, NULL); 1973 1974 iwlagn_fw_error(priv, false); 1975 } 1976 1977 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode) 1978 { 1979 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1980 1981 if (!iwl_check_for_ct_kill(priv)) { 1982 IWL_ERR(priv, "Restarting adapter queue is full\n"); 1983 iwlagn_fw_error(priv, false); 1984 } 1985 } 1986 1987 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3 1988 1989 static void iwl_nic_config(struct iwl_op_mode *op_mode) 1990 { 1991 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1992 1993 /* SKU Control */ 1994 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1995 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 1996 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP, 1997 (CSR_HW_REV_STEP(priv->trans->hw_rev) << 1998 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) | 1999 (CSR_HW_REV_DASH(priv->trans->hw_rev) << 2000 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH)); 2001 2002 /* write radio config values to register */ 2003 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) { 2004 u32 reg_val = 2005 priv->nvm_data->radio_cfg_type << 2006 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | 2007 priv->nvm_data->radio_cfg_step << 2008 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | 2009 priv->nvm_data->radio_cfg_dash << 2010 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 2011 2012 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 2013 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 2014 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 2015 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, 2016 reg_val); 2017 2018 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", 2019 priv->nvm_data->radio_cfg_type, 2020 priv->nvm_data->radio_cfg_step, 2021 priv->nvm_data->radio_cfg_dash); 2022 } else { 2023 WARN_ON(1); 2024 } 2025 2026 /* set CSR_HW_CONFIG_REG for uCode use */ 2027 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, 2028 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 2029 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); 2030 2031 /* W/A : NIC is stuck in a reset state after Early PCIe power off 2032 * (PCIe power is lost before PERST# is asserted), 2033 * causing ME FW to lose ownership and not being able to obtain it back. 2034 */ 2035 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, 2036 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 2037 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 2038 2039 if (priv->lib->nic_config) 2040 priv->lib->nic_config(priv); 2041 } 2042 2043 static void iwl_wimax_active(struct iwl_op_mode *op_mode) 2044 { 2045 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2046 2047 clear_bit(STATUS_READY, &priv->status); 2048 IWL_ERR(priv, "RF is used by WiMAX\n"); 2049 } 2050 2051 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 2052 { 2053 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2054 int mq = priv->queue_to_mac80211[queue]; 2055 2056 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2057 return; 2058 2059 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) { 2060 IWL_DEBUG_TX_QUEUES(priv, 2061 "queue %d (mac80211 %d) already stopped\n", 2062 queue, mq); 2063 return; 2064 } 2065 2066 set_bit(mq, &priv->transport_queue_stop); 2067 ieee80211_stop_queue(priv->hw, mq); 2068 } 2069 2070 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 2071 { 2072 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2073 int mq = priv->queue_to_mac80211[queue]; 2074 2075 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2076 return; 2077 2078 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { 2079 IWL_DEBUG_TX_QUEUES(priv, 2080 "queue %d (mac80211 %d) already awake\n", 2081 queue, mq); 2082 return; 2083 } 2084 2085 clear_bit(mq, &priv->transport_queue_stop); 2086 2087 if (!priv->passive_no_rx) 2088 ieee80211_wake_queue(priv->hw, mq); 2089 } 2090 2091 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) 2092 { 2093 int mq; 2094 2095 if (!priv->passive_no_rx) 2096 return; 2097 2098 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { 2099 if (!test_bit(mq, &priv->transport_queue_stop)) { 2100 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq); 2101 ieee80211_wake_queue(priv->hw, mq); 2102 } else { 2103 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq); 2104 } 2105 } 2106 2107 priv->passive_no_rx = false; 2108 } 2109 2110 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 2111 { 2112 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2113 struct ieee80211_tx_info *info; 2114 2115 info = IEEE80211_SKB_CB(skb); 2116 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); 2117 ieee80211_free_txskb(priv->hw, skb); 2118 } 2119 2120 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 2121 { 2122 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2123 2124 if (state) 2125 set_bit(STATUS_RF_KILL_HW, &priv->status); 2126 else 2127 clear_bit(STATUS_RF_KILL_HW, &priv->status); 2128 2129 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); 2130 2131 return false; 2132 } 2133 2134 static const struct iwl_op_mode_ops iwl_dvm_ops = { 2135 .start = iwl_op_mode_dvm_start, 2136 .stop = iwl_op_mode_dvm_stop, 2137 .rx = iwl_rx_dispatch, 2138 .queue_full = iwl_stop_sw_queue, 2139 .queue_not_full = iwl_wake_sw_queue, 2140 .hw_rf_kill = iwl_set_hw_rfkill_state, 2141 .free_skb = iwl_free_skb, 2142 .nic_error = iwl_nic_error, 2143 .cmd_queue_full = iwl_cmd_queue_full, 2144 .nic_config = iwl_nic_config, 2145 .wimax_active = iwl_wimax_active, 2146 }; 2147 2148 /***************************************************************************** 2149 * 2150 * driver and module entry point 2151 * 2152 *****************************************************************************/ 2153 static int __init iwl_init(void) 2154 { 2155 2156 int ret; 2157 2158 ret = iwlagn_rate_control_register(); 2159 if (ret) { 2160 pr_err("Unable to register rate control algorithm: %d\n", ret); 2161 return ret; 2162 } 2163 2164 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); 2165 if (ret) { 2166 pr_err("Unable to register op_mode: %d\n", ret); 2167 iwlagn_rate_control_unregister(); 2168 } 2169 2170 return ret; 2171 } 2172 module_init(iwl_init); 2173 2174 static void __exit iwl_exit(void) 2175 { 2176 iwl_opmode_deregister("iwldvm"); 2177 iwlagn_rate_control_unregister(); 2178 } 2179 module_exit(iwl_exit); 2180