1 // SPDX-License-Identifier: GPL-2.0-only 2 /****************************************************************************** 3 * 4 * Copyright(c) 2003 - 2014, 2018 - 2021 Intel Corporation. All rights reserved. 5 * Copyright(c) 2015 Intel Deutschland GmbH 6 * 7 * Portions of this file are derived from the ipw3945 project, as well 8 * as portions of the ieee80211 subsystem header files. 9 *****************************************************************************/ 10 11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 12 13 #include <linux/kernel.h> 14 #include <linux/module.h> 15 #include <linux/init.h> 16 #include <linux/slab.h> 17 #include <linux/delay.h> 18 #include <linux/sched.h> 19 #include <linux/skbuff.h> 20 #include <linux/netdevice.h> 21 #include <linux/etherdevice.h> 22 #include <linux/if_arp.h> 23 24 #include <net/mac80211.h> 25 26 #include <asm/div64.h> 27 28 #include "iwl-eeprom-read.h" 29 #include "iwl-eeprom-parse.h" 30 #include "iwl-io.h" 31 #include "iwl-trans.h" 32 #include "iwl-op-mode.h" 33 #include "iwl-drv.h" 34 #include "iwl-modparams.h" 35 #include "iwl-prph.h" 36 37 #include "dev.h" 38 #include "calib.h" 39 #include "agn.h" 40 41 42 /****************************************************************************** 43 * 44 * module boiler plate 45 * 46 ******************************************************************************/ 47 48 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" 49 MODULE_DESCRIPTION(DRV_DESCRIPTION); 50 MODULE_LICENSE("GPL"); 51 52 /* Please keep this array *SORTED* by hex value. 53 * Access is done through binary search. 54 * A warning will be triggered on violation. 55 */ 56 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = { 57 HCMD_NAME(REPLY_ALIVE), 58 HCMD_NAME(REPLY_ERROR), 59 HCMD_NAME(REPLY_ECHO), 60 HCMD_NAME(REPLY_RXON), 61 HCMD_NAME(REPLY_RXON_ASSOC), 62 HCMD_NAME(REPLY_QOS_PARAM), 63 HCMD_NAME(REPLY_RXON_TIMING), 64 HCMD_NAME(REPLY_ADD_STA), 65 HCMD_NAME(REPLY_REMOVE_STA), 66 HCMD_NAME(REPLY_REMOVE_ALL_STA), 67 HCMD_NAME(REPLY_TX), 68 HCMD_NAME(REPLY_TXFIFO_FLUSH), 69 HCMD_NAME(REPLY_WEPKEY), 70 HCMD_NAME(REPLY_LEDS_CMD), 71 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD), 72 HCMD_NAME(COEX_PRIORITY_TABLE_CMD), 73 HCMD_NAME(COEX_MEDIUM_NOTIFICATION), 74 HCMD_NAME(COEX_EVENT_CMD), 75 HCMD_NAME(TEMPERATURE_NOTIFICATION), 76 HCMD_NAME(CALIBRATION_CFG_CMD), 77 HCMD_NAME(CALIBRATION_RES_NOTIFICATION), 78 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION), 79 HCMD_NAME(REPLY_QUIET_CMD), 80 HCMD_NAME(REPLY_CHANNEL_SWITCH), 81 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION), 82 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD), 83 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION), 84 HCMD_NAME(POWER_TABLE_CMD), 85 HCMD_NAME(PM_SLEEP_NOTIFICATION), 86 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC), 87 HCMD_NAME(REPLY_SCAN_CMD), 88 HCMD_NAME(REPLY_SCAN_ABORT_CMD), 89 HCMD_NAME(SCAN_START_NOTIFICATION), 90 HCMD_NAME(SCAN_RESULTS_NOTIFICATION), 91 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION), 92 HCMD_NAME(BEACON_NOTIFICATION), 93 HCMD_NAME(REPLY_TX_BEACON), 94 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION), 95 HCMD_NAME(REPLY_TX_POWER_DBM_CMD), 96 HCMD_NAME(QUIET_NOTIFICATION), 97 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD), 98 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1), 99 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 100 HCMD_NAME(MEASURE_ABORT_NOTIFICATION), 101 HCMD_NAME(REPLY_BT_CONFIG), 102 HCMD_NAME(REPLY_STATISTICS_CMD), 103 HCMD_NAME(STATISTICS_NOTIFICATION), 104 HCMD_NAME(REPLY_CARD_STATE_CMD), 105 HCMD_NAME(CARD_STATE_NOTIFICATION), 106 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 107 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD), 108 HCMD_NAME(SENSITIVITY_CMD), 109 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD), 110 HCMD_NAME(REPLY_WIPAN_PARAMS), 111 HCMD_NAME(REPLY_WIPAN_RXON), 112 HCMD_NAME(REPLY_WIPAN_RXON_TIMING), 113 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC), 114 HCMD_NAME(REPLY_WIPAN_QOS_PARAM), 115 HCMD_NAME(REPLY_WIPAN_WEPKEY), 116 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH), 117 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION), 118 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE), 119 HCMD_NAME(REPLY_RX_PHY_CMD), 120 HCMD_NAME(REPLY_RX_MPDU_CMD), 121 HCMD_NAME(REPLY_RX), 122 HCMD_NAME(REPLY_COMPRESSED_BA), 123 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE), 124 HCMD_NAME(REPLY_BT_COEX_PROT_ENV), 125 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF), 126 HCMD_NAME(REPLY_D3_CONFIG), 127 HCMD_NAME(REPLY_WOWLAN_PATTERNS), 128 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER), 129 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS), 130 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS), 131 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL), 132 HCMD_NAME(REPLY_WOWLAN_GET_STATUS), 133 }; 134 135 static const struct iwl_hcmd_arr iwl_dvm_groups[] = { 136 [0x0] = HCMD_ARR(iwl_dvm_cmd_names), 137 }; 138 139 static const struct iwl_op_mode_ops iwl_dvm_ops; 140 141 void iwl_update_chain_flags(struct iwl_priv *priv) 142 { 143 struct iwl_rxon_context *ctx; 144 145 for_each_context(priv, ctx) { 146 iwlagn_set_rxon_chain(priv, ctx); 147 if (ctx->active.rx_chain != ctx->staging.rx_chain) 148 iwlagn_commit_rxon(priv, ctx); 149 } 150 } 151 152 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ 153 static void iwl_set_beacon_tim(struct iwl_priv *priv, 154 struct iwl_tx_beacon_cmd *tx_beacon_cmd, 155 u8 *beacon, u32 frame_size) 156 { 157 u16 tim_idx; 158 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 159 160 /* 161 * The index is relative to frame start but we start looking at the 162 * variable-length part of the beacon. 163 */ 164 tim_idx = mgmt->u.beacon.variable - beacon; 165 166 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 167 while ((tim_idx < (frame_size - 2)) && 168 (beacon[tim_idx] != WLAN_EID_TIM)) 169 tim_idx += beacon[tim_idx+1] + 2; 170 171 /* If TIM field was found, set variables */ 172 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 173 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); 174 tx_beacon_cmd->tim_size = beacon[tim_idx+1]; 175 } else 176 IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); 177 } 178 179 int iwlagn_send_beacon_cmd(struct iwl_priv *priv) 180 { 181 struct iwl_tx_beacon_cmd *tx_beacon_cmd; 182 struct iwl_host_cmd cmd = { 183 .id = REPLY_TX_BEACON, 184 }; 185 struct ieee80211_tx_info *info; 186 u32 frame_size; 187 u32 rate_flags; 188 u32 rate; 189 190 /* 191 * We have to set up the TX command, the TX Beacon command, and the 192 * beacon contents. 193 */ 194 195 lockdep_assert_held(&priv->mutex); 196 197 if (!priv->beacon_ctx) { 198 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); 199 return 0; 200 } 201 202 if (WARN_ON(!priv->beacon_skb)) 203 return -EINVAL; 204 205 /* Allocate beacon command */ 206 if (!priv->beacon_cmd) 207 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); 208 tx_beacon_cmd = priv->beacon_cmd; 209 if (!tx_beacon_cmd) 210 return -ENOMEM; 211 212 frame_size = priv->beacon_skb->len; 213 214 /* Set up TX command fields */ 215 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); 216 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; 217 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; 218 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | 219 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; 220 221 /* Set up TX beacon command fields */ 222 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, 223 frame_size); 224 225 /* Set up packet rate and flags */ 226 info = IEEE80211_SKB_CB(priv->beacon_skb); 227 228 /* 229 * Let's set up the rate at least somewhat correctly; 230 * it will currently not actually be used by the uCode, 231 * it uses the broadcast station's rate instead. 232 */ 233 if (info->control.rates[0].idx < 0 || 234 info->control.rates[0].flags & IEEE80211_TX_RC_MCS) 235 rate = 0; 236 else 237 rate = info->control.rates[0].idx; 238 239 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, 240 priv->nvm_data->valid_tx_ant); 241 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); 242 243 /* In mac80211, rates for 5 GHz start at 0 */ 244 if (info->band == NL80211_BAND_5GHZ) 245 rate += IWL_FIRST_OFDM_RATE; 246 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) 247 rate_flags |= RATE_MCS_CCK_MSK; 248 249 tx_beacon_cmd->tx.rate_n_flags = 250 iwl_hw_set_rate_n_flags(rate, rate_flags); 251 252 /* Submit command */ 253 cmd.len[0] = sizeof(*tx_beacon_cmd); 254 cmd.data[0] = tx_beacon_cmd; 255 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 256 cmd.len[1] = frame_size; 257 cmd.data[1] = priv->beacon_skb->data; 258 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; 259 260 return iwl_dvm_send_cmd(priv, &cmd); 261 } 262 263 static void iwl_bg_beacon_update(struct work_struct *work) 264 { 265 struct iwl_priv *priv = 266 container_of(work, struct iwl_priv, beacon_update); 267 struct sk_buff *beacon; 268 269 mutex_lock(&priv->mutex); 270 if (!priv->beacon_ctx) { 271 IWL_ERR(priv, "updating beacon w/o beacon context!\n"); 272 goto out; 273 } 274 275 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { 276 /* 277 * The ucode will send beacon notifications even in 278 * IBSS mode, but we don't want to process them. But 279 * we need to defer the type check to here due to 280 * requiring locking around the beacon_ctx access. 281 */ 282 goto out; 283 } 284 285 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ 286 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); 287 if (!beacon) { 288 IWL_ERR(priv, "update beacon failed -- keeping old\n"); 289 goto out; 290 } 291 292 /* new beacon skb is allocated every time; dispose previous.*/ 293 dev_kfree_skb(priv->beacon_skb); 294 295 priv->beacon_skb = beacon; 296 297 iwlagn_send_beacon_cmd(priv); 298 out: 299 mutex_unlock(&priv->mutex); 300 } 301 302 static void iwl_bg_bt_runtime_config(struct work_struct *work) 303 { 304 struct iwl_priv *priv = 305 container_of(work, struct iwl_priv, bt_runtime_config); 306 307 mutex_lock(&priv->mutex); 308 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 309 goto out; 310 311 /* dont send host command if rf-kill is on */ 312 if (!iwl_is_ready_rf(priv)) 313 goto out; 314 315 iwlagn_send_advance_bt_config(priv); 316 out: 317 mutex_unlock(&priv->mutex); 318 } 319 320 static void iwl_bg_bt_full_concurrency(struct work_struct *work) 321 { 322 struct iwl_priv *priv = 323 container_of(work, struct iwl_priv, bt_full_concurrency); 324 struct iwl_rxon_context *ctx; 325 326 mutex_lock(&priv->mutex); 327 328 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 329 goto out; 330 331 /* dont send host command if rf-kill is on */ 332 if (!iwl_is_ready_rf(priv)) 333 goto out; 334 335 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", 336 priv->bt_full_concurrent ? 337 "full concurrency" : "3-wire"); 338 339 /* 340 * LQ & RXON updated cmds must be sent before BT Config cmd 341 * to avoid 3-wire collisions 342 */ 343 for_each_context(priv, ctx) { 344 iwlagn_set_rxon_chain(priv, ctx); 345 iwlagn_commit_rxon(priv, ctx); 346 } 347 348 iwlagn_send_advance_bt_config(priv); 349 out: 350 mutex_unlock(&priv->mutex); 351 } 352 353 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) 354 { 355 struct iwl_statistics_cmd statistics_cmd = { 356 .configuration_flags = 357 clear ? IWL_STATS_CONF_CLEAR_STATS : 0, 358 }; 359 360 if (flags & CMD_ASYNC) 361 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 362 CMD_ASYNC, 363 sizeof(struct iwl_statistics_cmd), 364 &statistics_cmd); 365 else 366 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0, 367 sizeof(struct iwl_statistics_cmd), 368 &statistics_cmd); 369 } 370 371 /* 372 * iwl_bg_statistics_periodic - Timer callback to queue statistics 373 * 374 * This callback is provided in order to send a statistics request. 375 * 376 * This timer function is continually reset to execute within 377 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION 378 * was received. We need to ensure we receive the statistics in order 379 * to update the temperature used for calibrating the TXPOWER. 380 */ 381 static void iwl_bg_statistics_periodic(struct timer_list *t) 382 { 383 struct iwl_priv *priv = from_timer(priv, t, statistics_periodic); 384 385 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 386 return; 387 388 /* dont send host command if rf-kill is on */ 389 if (!iwl_is_ready_rf(priv)) 390 return; 391 392 iwl_send_statistics_request(priv, CMD_ASYNC, false); 393 } 394 395 396 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, 397 u32 start_idx, u32 num_events, 398 u32 capacity, u32 mode) 399 { 400 u32 i; 401 u32 ptr; /* SRAM byte address of log data */ 402 u32 ev, time, data; /* event log data */ 403 404 if (mode == 0) 405 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); 406 else 407 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); 408 409 /* Make sure device is powered up for SRAM reads */ 410 if (!iwl_trans_grab_nic_access(priv->trans)) 411 return; 412 413 /* Set starting address; reads will auto-increment */ 414 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); 415 416 /* 417 * Refuse to read more than would have fit into the log from 418 * the current start_idx. This used to happen due to the race 419 * described below, but now WARN because the code below should 420 * prevent it from happening here. 421 */ 422 if (WARN_ON(num_events > capacity - start_idx)) 423 num_events = capacity - start_idx; 424 425 /* 426 * "time" is actually "data" for mode 0 (no timestamp). 427 * place event id # at far right for easier visual parsing. 428 */ 429 for (i = 0; i < num_events; i++) { 430 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 431 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 432 if (mode == 0) { 433 trace_iwlwifi_dev_ucode_cont_event( 434 priv->trans->dev, 0, time, ev); 435 } else { 436 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 437 trace_iwlwifi_dev_ucode_cont_event( 438 priv->trans->dev, time, data, ev); 439 } 440 } 441 /* Allow device to power down */ 442 iwl_trans_release_nic_access(priv->trans); 443 } 444 445 static void iwl_continuous_event_trace(struct iwl_priv *priv) 446 { 447 u32 capacity; /* event log capacity in # entries */ 448 struct { 449 u32 capacity; 450 u32 mode; 451 u32 wrap_counter; 452 u32 write_counter; 453 } __packed read; 454 u32 base; /* SRAM byte address of event log header */ 455 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 456 u32 num_wraps; /* # times uCode wrapped to top of log */ 457 u32 next_entry; /* index of next entry to be written by uCode */ 458 459 base = priv->device_pointers.log_event_table; 460 if (iwlagn_hw_valid_rtc_data_addr(base)) { 461 iwl_trans_read_mem_bytes(priv->trans, base, 462 &read, sizeof(read)); 463 capacity = read.capacity; 464 mode = read.mode; 465 num_wraps = read.wrap_counter; 466 next_entry = read.write_counter; 467 } else 468 return; 469 470 /* 471 * Unfortunately, the uCode doesn't use temporary variables. 472 * Therefore, it can happen that we read next_entry == capacity, 473 * which really means next_entry == 0. 474 */ 475 if (unlikely(next_entry == capacity)) 476 next_entry = 0; 477 /* 478 * Additionally, the uCode increases the write pointer before 479 * the wraps counter, so if the write pointer is smaller than 480 * the old write pointer (wrap occurred) but we read that no 481 * wrap occurred, we actually read between the next_entry and 482 * num_wraps update (this does happen in practice!!) -- take 483 * that into account by increasing num_wraps. 484 */ 485 if (unlikely(next_entry < priv->event_log.next_entry && 486 num_wraps == priv->event_log.num_wraps)) 487 num_wraps++; 488 489 if (num_wraps == priv->event_log.num_wraps) { 490 iwl_print_cont_event_trace( 491 priv, base, priv->event_log.next_entry, 492 next_entry - priv->event_log.next_entry, 493 capacity, mode); 494 495 priv->event_log.non_wraps_count++; 496 } else { 497 if (num_wraps - priv->event_log.num_wraps > 1) 498 priv->event_log.wraps_more_count++; 499 else 500 priv->event_log.wraps_once_count++; 501 502 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, 503 num_wraps - priv->event_log.num_wraps, 504 next_entry, priv->event_log.next_entry); 505 506 if (next_entry < priv->event_log.next_entry) { 507 iwl_print_cont_event_trace( 508 priv, base, priv->event_log.next_entry, 509 capacity - priv->event_log.next_entry, 510 capacity, mode); 511 512 iwl_print_cont_event_trace( 513 priv, base, 0, next_entry, capacity, mode); 514 } else { 515 iwl_print_cont_event_trace( 516 priv, base, next_entry, 517 capacity - next_entry, 518 capacity, mode); 519 520 iwl_print_cont_event_trace( 521 priv, base, 0, next_entry, capacity, mode); 522 } 523 } 524 525 priv->event_log.num_wraps = num_wraps; 526 priv->event_log.next_entry = next_entry; 527 } 528 529 /* 530 * iwl_bg_ucode_trace - Timer callback to log ucode event 531 * 532 * The timer is continually set to execute every 533 * UCODE_TRACE_PERIOD milliseconds after the last timer expired 534 * this function is to perform continuous uCode event logging operation 535 * if enabled 536 */ 537 static void iwl_bg_ucode_trace(struct timer_list *t) 538 { 539 struct iwl_priv *priv = from_timer(priv, t, ucode_trace); 540 541 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 542 return; 543 544 if (priv->event_log.ucode_trace) { 545 iwl_continuous_event_trace(priv); 546 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ 547 mod_timer(&priv->ucode_trace, 548 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); 549 } 550 } 551 552 static void iwl_bg_tx_flush(struct work_struct *work) 553 { 554 struct iwl_priv *priv = 555 container_of(work, struct iwl_priv, tx_flush); 556 557 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 558 return; 559 560 /* do nothing if rf-kill is on */ 561 if (!iwl_is_ready_rf(priv)) 562 return; 563 564 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); 565 iwlagn_dev_txfifo_flush(priv); 566 } 567 568 /* 569 * queue/FIFO/AC mapping definitions 570 */ 571 572 static const u8 iwlagn_bss_ac_to_fifo[] = { 573 IWL_TX_FIFO_VO, 574 IWL_TX_FIFO_VI, 575 IWL_TX_FIFO_BE, 576 IWL_TX_FIFO_BK, 577 }; 578 579 static const u8 iwlagn_bss_ac_to_queue[] = { 580 0, 1, 2, 3, 581 }; 582 583 static const u8 iwlagn_pan_ac_to_fifo[] = { 584 IWL_TX_FIFO_VO_IPAN, 585 IWL_TX_FIFO_VI_IPAN, 586 IWL_TX_FIFO_BE_IPAN, 587 IWL_TX_FIFO_BK_IPAN, 588 }; 589 590 static const u8 iwlagn_pan_ac_to_queue[] = { 591 7, 6, 5, 4, 592 }; 593 594 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) 595 { 596 int i; 597 598 /* 599 * The default context is always valid, 600 * the PAN context depends on uCode. 601 */ 602 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); 603 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) 604 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 605 606 for (i = 0; i < NUM_IWL_RXON_CTX; i++) 607 priv->contexts[i].ctxid = i; 608 609 priv->contexts[IWL_RXON_CTX_BSS].always_active = true; 610 priv->contexts[IWL_RXON_CTX_BSS].is_active = true; 611 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; 612 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; 613 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; 614 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; 615 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; 616 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; 617 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 618 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = 619 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR); 620 priv->contexts[IWL_RXON_CTX_BSS].interface_modes = 621 BIT(NL80211_IFTYPE_STATION); 622 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; 623 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; 624 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; 625 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; 626 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, 627 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); 628 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, 629 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); 630 631 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; 632 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = 633 REPLY_WIPAN_RXON_TIMING; 634 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = 635 REPLY_WIPAN_RXON_ASSOC; 636 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; 637 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; 638 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; 639 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; 640 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; 641 priv->contexts[IWL_RXON_CTX_PAN].interface_modes = 642 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); 643 644 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; 645 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; 646 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; 647 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, 648 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); 649 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, 650 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); 651 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; 652 653 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); 654 } 655 656 static void iwl_rf_kill_ct_config(struct iwl_priv *priv) 657 { 658 struct iwl_ct_kill_config cmd; 659 struct iwl_ct_kill_throttling_config adv_cmd; 660 int ret = 0; 661 662 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 663 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); 664 665 priv->thermal_throttle.ct_kill_toggle = false; 666 667 if (priv->lib->support_ct_kill_exit) { 668 adv_cmd.critical_temperature_enter = 669 cpu_to_le32(priv->hw_params.ct_kill_threshold); 670 adv_cmd.critical_temperature_exit = 671 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); 672 673 ret = iwl_dvm_send_cmd_pdu(priv, 674 REPLY_CT_KILL_CONFIG_CMD, 675 0, sizeof(adv_cmd), &adv_cmd); 676 if (ret) 677 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 678 else 679 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 680 "succeeded, critical temperature enter is %d," 681 "exit is %d\n", 682 priv->hw_params.ct_kill_threshold, 683 priv->hw_params.ct_kill_exit_threshold); 684 } else { 685 cmd.critical_temperature_R = 686 cpu_to_le32(priv->hw_params.ct_kill_threshold); 687 688 ret = iwl_dvm_send_cmd_pdu(priv, 689 REPLY_CT_KILL_CONFIG_CMD, 690 0, sizeof(cmd), &cmd); 691 if (ret) 692 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 693 else 694 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 695 "succeeded, " 696 "critical temperature is %d\n", 697 priv->hw_params.ct_kill_threshold); 698 } 699 } 700 701 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) 702 { 703 struct iwl_calib_cfg_cmd calib_cfg_cmd; 704 struct iwl_host_cmd cmd = { 705 .id = CALIBRATION_CFG_CMD, 706 .len = { sizeof(struct iwl_calib_cfg_cmd), }, 707 .data = { &calib_cfg_cmd, }, 708 }; 709 710 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); 711 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; 712 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); 713 714 return iwl_dvm_send_cmd(priv, &cmd); 715 } 716 717 718 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) 719 { 720 struct iwl_tx_ant_config_cmd tx_ant_cmd = { 721 .valid = cpu_to_le32(valid_tx_ant), 722 }; 723 724 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { 725 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); 726 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0, 727 sizeof(struct iwl_tx_ant_config_cmd), 728 &tx_ant_cmd); 729 } else { 730 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); 731 return -EOPNOTSUPP; 732 } 733 } 734 735 static void iwl_send_bt_config(struct iwl_priv *priv) 736 { 737 struct iwl_bt_cmd bt_cmd = { 738 .lead_time = BT_LEAD_TIME_DEF, 739 .max_kill = BT_MAX_KILL_DEF, 740 .kill_ack_mask = 0, 741 .kill_cts_mask = 0, 742 }; 743 744 if (!iwlwifi_mod_params.bt_coex_active) 745 bt_cmd.flags = BT_COEX_DISABLE; 746 else 747 bt_cmd.flags = BT_COEX_ENABLE; 748 749 priv->bt_enable_flag = bt_cmd.flags; 750 IWL_DEBUG_INFO(priv, "BT coex %s\n", 751 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); 752 753 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 754 0, sizeof(struct iwl_bt_cmd), &bt_cmd)) 755 IWL_ERR(priv, "failed to send BT Coex Config\n"); 756 } 757 758 /* 759 * iwl_alive_start - called after REPLY_ALIVE notification received 760 * from protocol/runtime uCode (initialization uCode's 761 * Alive gets handled by iwl_init_alive_start()). 762 */ 763 int iwl_alive_start(struct iwl_priv *priv) 764 { 765 int ret = 0; 766 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 767 768 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); 769 770 /* After the ALIVE response, we can send host commands to the uCode */ 771 set_bit(STATUS_ALIVE, &priv->status); 772 773 if (iwl_is_rfkill(priv)) 774 return -ERFKILL; 775 776 if (priv->event_log.ucode_trace) { 777 /* start collecting data now */ 778 mod_timer(&priv->ucode_trace, jiffies); 779 } 780 781 /* download priority table before any calibration request */ 782 if (priv->lib->bt_params && 783 priv->lib->bt_params->advanced_bt_coexist) { 784 /* Configure Bluetooth device coexistence support */ 785 if (priv->lib->bt_params->bt_sco_disable) 786 priv->bt_enable_pspoll = false; 787 else 788 priv->bt_enable_pspoll = true; 789 790 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 791 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 792 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 793 iwlagn_send_advance_bt_config(priv); 794 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; 795 priv->cur_rssi_ctx = NULL; 796 797 iwl_send_prio_tbl(priv); 798 799 /* FIXME: w/a to force change uCode BT state machine */ 800 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, 801 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 802 if (ret) 803 return ret; 804 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, 805 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 806 if (ret) 807 return ret; 808 } else if (priv->lib->bt_params) { 809 /* 810 * default is 2-wire BT coexexistence support 811 */ 812 iwl_send_bt_config(priv); 813 } 814 815 /* 816 * Perform runtime calibrations, including DC calibration. 817 */ 818 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); 819 820 ieee80211_wake_queues(priv->hw); 821 822 /* Configure Tx antenna selection based on H/W config */ 823 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant); 824 825 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { 826 struct iwl_rxon_cmd *active_rxon = 827 (struct iwl_rxon_cmd *)&ctx->active; 828 /* apply any changes in staging */ 829 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; 830 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; 831 } else { 832 struct iwl_rxon_context *tmp; 833 /* Initialize our rx_config data */ 834 for_each_context(priv, tmp) 835 iwl_connection_init_rx_config(priv, tmp); 836 837 iwlagn_set_rxon_chain(priv, ctx); 838 } 839 840 if (!priv->wowlan) { 841 /* WoWLAN ucode will not reply in the same way, skip it */ 842 iwl_reset_run_time_calib(priv); 843 } 844 845 set_bit(STATUS_READY, &priv->status); 846 847 /* Configure the adapter for unassociated operation */ 848 ret = iwlagn_commit_rxon(priv, ctx); 849 if (ret) 850 return ret; 851 852 /* At this point, the NIC is initialized and operational */ 853 iwl_rf_kill_ct_config(priv); 854 855 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); 856 857 return iwl_power_update_mode(priv, true); 858 } 859 860 /** 861 * iwl_clear_driver_stations - clear knowledge of all stations from driver 862 * @priv: iwl priv struct 863 * 864 * This is called during iwl_down() to make sure that in the case 865 * we're coming there from a hardware restart mac80211 will be 866 * able to reconfigure stations -- if we're getting there in the 867 * normal down flow then the stations will already be cleared. 868 */ 869 static void iwl_clear_driver_stations(struct iwl_priv *priv) 870 { 871 struct iwl_rxon_context *ctx; 872 873 spin_lock_bh(&priv->sta_lock); 874 memset(priv->stations, 0, sizeof(priv->stations)); 875 priv->num_stations = 0; 876 877 priv->ucode_key_table = 0; 878 879 for_each_context(priv, ctx) { 880 /* 881 * Remove all key information that is not stored as part 882 * of station information since mac80211 may not have had 883 * a chance to remove all the keys. When device is 884 * reconfigured by mac80211 after an error all keys will 885 * be reconfigured. 886 */ 887 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 888 ctx->key_mapping_keys = 0; 889 } 890 891 spin_unlock_bh(&priv->sta_lock); 892 } 893 894 void iwl_down(struct iwl_priv *priv) 895 { 896 int exit_pending; 897 898 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); 899 900 lockdep_assert_held(&priv->mutex); 901 902 iwl_scan_cancel_timeout(priv, 200); 903 904 exit_pending = 905 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); 906 907 iwl_clear_ucode_stations(priv, NULL); 908 iwl_dealloc_bcast_stations(priv); 909 iwl_clear_driver_stations(priv); 910 911 /* reset BT coex data */ 912 priv->bt_status = 0; 913 priv->cur_rssi_ctx = NULL; 914 priv->bt_is_sco = 0; 915 if (priv->lib->bt_params) 916 priv->bt_traffic_load = 917 priv->lib->bt_params->bt_init_traffic_load; 918 else 919 priv->bt_traffic_load = 0; 920 priv->bt_full_concurrent = false; 921 priv->bt_ci_compliance = 0; 922 923 /* Wipe out the EXIT_PENDING status bit if we are not actually 924 * exiting the module */ 925 if (!exit_pending) 926 clear_bit(STATUS_EXIT_PENDING, &priv->status); 927 928 if (priv->mac80211_registered) 929 ieee80211_stop_queues(priv->hw); 930 931 priv->ucode_loaded = false; 932 iwl_trans_stop_device(priv->trans); 933 934 /* Set num_aux_in_flight must be done after the transport is stopped */ 935 atomic_set(&priv->num_aux_in_flight, 0); 936 937 /* Clear out all status bits but a few that are stable across reset */ 938 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << 939 STATUS_RF_KILL_HW | 940 test_bit(STATUS_FW_ERROR, &priv->status) << 941 STATUS_FW_ERROR | 942 test_bit(STATUS_EXIT_PENDING, &priv->status) << 943 STATUS_EXIT_PENDING; 944 945 dev_kfree_skb(priv->beacon_skb); 946 priv->beacon_skb = NULL; 947 } 948 949 /***************************************************************************** 950 * 951 * Workqueue callbacks 952 * 953 *****************************************************************************/ 954 955 static void iwl_bg_run_time_calib_work(struct work_struct *work) 956 { 957 struct iwl_priv *priv = container_of(work, struct iwl_priv, 958 run_time_calib_work); 959 960 mutex_lock(&priv->mutex); 961 962 if (test_bit(STATUS_EXIT_PENDING, &priv->status) || 963 test_bit(STATUS_SCANNING, &priv->status)) { 964 mutex_unlock(&priv->mutex); 965 return; 966 } 967 968 if (priv->start_calib) { 969 iwl_chain_noise_calibration(priv); 970 iwl_sensitivity_calibration(priv); 971 } 972 973 mutex_unlock(&priv->mutex); 974 } 975 976 void iwlagn_prepare_restart(struct iwl_priv *priv) 977 { 978 bool bt_full_concurrent; 979 u8 bt_ci_compliance; 980 u8 bt_load; 981 u8 bt_status; 982 bool bt_is_sco; 983 int i; 984 985 lockdep_assert_held(&priv->mutex); 986 987 priv->is_open = 0; 988 989 /* 990 * __iwl_down() will clear the BT status variables, 991 * which is correct, but when we restart we really 992 * want to keep them so restore them afterwards. 993 * 994 * The restart process will later pick them up and 995 * re-configure the hw when we reconfigure the BT 996 * command. 997 */ 998 bt_full_concurrent = priv->bt_full_concurrent; 999 bt_ci_compliance = priv->bt_ci_compliance; 1000 bt_load = priv->bt_traffic_load; 1001 bt_status = priv->bt_status; 1002 bt_is_sco = priv->bt_is_sco; 1003 1004 iwl_down(priv); 1005 1006 priv->bt_full_concurrent = bt_full_concurrent; 1007 priv->bt_ci_compliance = bt_ci_compliance; 1008 priv->bt_traffic_load = bt_load; 1009 priv->bt_status = bt_status; 1010 priv->bt_is_sco = bt_is_sco; 1011 1012 /* reset aggregation queues */ 1013 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) 1014 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1015 /* and stop counts */ 1016 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 1017 atomic_set(&priv->queue_stop_count[i], 0); 1018 1019 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); 1020 } 1021 1022 static void iwl_bg_restart(struct work_struct *data) 1023 { 1024 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); 1025 1026 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 1027 return; 1028 1029 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { 1030 mutex_lock(&priv->mutex); 1031 iwlagn_prepare_restart(priv); 1032 mutex_unlock(&priv->mutex); 1033 iwl_cancel_deferred_work(priv); 1034 if (priv->mac80211_registered) 1035 ieee80211_restart_hw(priv->hw); 1036 else 1037 IWL_ERR(priv, 1038 "Cannot request restart before registering with mac80211\n"); 1039 } else { 1040 WARN_ON(1); 1041 } 1042 } 1043 1044 /***************************************************************************** 1045 * 1046 * driver setup and teardown 1047 * 1048 *****************************************************************************/ 1049 1050 static void iwl_setup_deferred_work(struct iwl_priv *priv) 1051 { 1052 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0); 1053 1054 INIT_WORK(&priv->restart, iwl_bg_restart); 1055 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); 1056 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); 1057 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); 1058 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); 1059 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); 1060 1061 iwl_setup_scan_deferred_work(priv); 1062 1063 if (priv->lib->bt_params) 1064 iwlagn_bt_setup_deferred_work(priv); 1065 1066 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0); 1067 1068 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0); 1069 } 1070 1071 void iwl_cancel_deferred_work(struct iwl_priv *priv) 1072 { 1073 if (priv->lib->bt_params) 1074 iwlagn_bt_cancel_deferred_work(priv); 1075 1076 cancel_work_sync(&priv->run_time_calib_work); 1077 cancel_work_sync(&priv->beacon_update); 1078 1079 iwl_cancel_scan_deferred_work(priv); 1080 1081 cancel_work_sync(&priv->bt_full_concurrency); 1082 cancel_work_sync(&priv->bt_runtime_config); 1083 1084 del_timer_sync(&priv->statistics_periodic); 1085 del_timer_sync(&priv->ucode_trace); 1086 } 1087 1088 static int iwl_init_drv(struct iwl_priv *priv) 1089 { 1090 spin_lock_init(&priv->sta_lock); 1091 1092 mutex_init(&priv->mutex); 1093 1094 INIT_LIST_HEAD(&priv->calib_results); 1095 1096 priv->band = NL80211_BAND_2GHZ; 1097 1098 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold; 1099 1100 priv->iw_mode = NL80211_IFTYPE_STATION; 1101 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; 1102 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; 1103 priv->agg_tids_count = 0; 1104 1105 priv->rx_statistics_jiffies = jiffies; 1106 1107 /* Choose which receivers/antennas to use */ 1108 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); 1109 1110 iwl_init_scan_params(priv); 1111 1112 /* init bt coex */ 1113 if (priv->lib->bt_params && 1114 priv->lib->bt_params->advanced_bt_coexist) { 1115 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 1116 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 1117 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 1118 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; 1119 priv->bt_duration = BT_DURATION_LIMIT_DEF; 1120 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; 1121 } 1122 1123 return 0; 1124 } 1125 1126 static void iwl_uninit_drv(struct iwl_priv *priv) 1127 { 1128 kfree(priv->scan_cmd); 1129 kfree(priv->beacon_cmd); 1130 kfree(rcu_dereference_raw(priv->noa_data)); 1131 iwl_calib_free_results(priv); 1132 #ifdef CONFIG_IWLWIFI_DEBUGFS 1133 kfree(priv->wowlan_sram); 1134 #endif 1135 } 1136 1137 static void iwl_set_hw_params(struct iwl_priv *priv) 1138 { 1139 if (priv->cfg->ht_params) 1140 priv->hw_params.use_rts_for_aggregation = 1141 priv->cfg->ht_params->use_rts_for_aggregation; 1142 1143 /* Device-specific setup */ 1144 priv->lib->set_hw_params(priv); 1145 } 1146 1147 1148 1149 /* show what optional capabilities we have */ 1150 static void iwl_option_config(struct iwl_priv *priv) 1151 { 1152 #ifdef CONFIG_IWLWIFI_DEBUG 1153 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); 1154 #else 1155 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); 1156 #endif 1157 1158 #ifdef CONFIG_IWLWIFI_DEBUGFS 1159 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); 1160 #else 1161 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); 1162 #endif 1163 1164 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING 1165 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); 1166 #else 1167 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); 1168 #endif 1169 } 1170 1171 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) 1172 { 1173 struct iwl_nvm_data *data = priv->nvm_data; 1174 1175 if (data->sku_cap_11n_enable && 1176 !priv->cfg->ht_params) { 1177 IWL_ERR(priv, "Invalid 11n configuration\n"); 1178 return -EINVAL; 1179 } 1180 1181 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable && 1182 !data->sku_cap_band_52ghz_enable) { 1183 IWL_ERR(priv, "Invalid device sku\n"); 1184 return -EINVAL; 1185 } 1186 1187 IWL_DEBUG_INFO(priv, 1188 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n", 1189 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled", 1190 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled", 1191 data->sku_cap_11n_enable ? "" : "NOT", "enabled"); 1192 1193 priv->hw_params.tx_chains_num = 1194 num_of_ant(data->valid_tx_ant); 1195 if (priv->cfg->rx_with_siso_diversity) 1196 priv->hw_params.rx_chains_num = 1; 1197 else 1198 priv->hw_params.rx_chains_num = 1199 num_of_ant(data->valid_rx_ant); 1200 1201 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", 1202 data->valid_tx_ant, 1203 data->valid_rx_ant); 1204 1205 return 0; 1206 } 1207 1208 static int iwl_nvm_check_version(struct iwl_nvm_data *data, 1209 struct iwl_trans *trans) 1210 { 1211 if (data->nvm_version >= trans->cfg->nvm_ver || 1212 data->calib_version >= trans->cfg->nvm_calib_ver) { 1213 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n", 1214 data->nvm_version, data->calib_version); 1215 return 0; 1216 } 1217 1218 IWL_ERR(trans, 1219 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n", 1220 data->nvm_version, trans->cfg->nvm_ver, 1221 data->calib_version, trans->cfg->nvm_calib_ver); 1222 return -EINVAL; 1223 } 1224 1225 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, 1226 const struct iwl_cfg *cfg, 1227 const struct iwl_fw *fw, 1228 struct dentry *dbgfs_dir) 1229 { 1230 struct iwl_priv *priv; 1231 struct ieee80211_hw *hw; 1232 struct iwl_op_mode *op_mode; 1233 u16 num_mac; 1234 u32 ucode_flags; 1235 struct iwl_trans_config trans_cfg = {}; 1236 static const u8 no_reclaim_cmds[] = { 1237 REPLY_RX_PHY_CMD, 1238 REPLY_RX_MPDU_CMD, 1239 REPLY_COMPRESSED_BA, 1240 STATISTICS_NOTIFICATION, 1241 REPLY_TX, 1242 }; 1243 int i; 1244 1245 /************************ 1246 * 1. Allocating HW data 1247 ************************/ 1248 hw = iwl_alloc_all(); 1249 if (!hw) { 1250 pr_err("%s: Cannot allocate network device\n", trans->name); 1251 goto out; 1252 } 1253 1254 op_mode = hw->priv; 1255 op_mode->ops = &iwl_dvm_ops; 1256 priv = IWL_OP_MODE_GET_DVM(op_mode); 1257 priv->trans = trans; 1258 priv->dev = trans->dev; 1259 priv->cfg = cfg; 1260 priv->fw = fw; 1261 1262 switch (priv->trans->trans_cfg->device_family) { 1263 case IWL_DEVICE_FAMILY_1000: 1264 case IWL_DEVICE_FAMILY_100: 1265 priv->lib = &iwl_dvm_1000_cfg; 1266 break; 1267 case IWL_DEVICE_FAMILY_2000: 1268 priv->lib = &iwl_dvm_2000_cfg; 1269 break; 1270 case IWL_DEVICE_FAMILY_105: 1271 priv->lib = &iwl_dvm_105_cfg; 1272 break; 1273 case IWL_DEVICE_FAMILY_2030: 1274 case IWL_DEVICE_FAMILY_135: 1275 priv->lib = &iwl_dvm_2030_cfg; 1276 break; 1277 case IWL_DEVICE_FAMILY_5000: 1278 priv->lib = &iwl_dvm_5000_cfg; 1279 break; 1280 case IWL_DEVICE_FAMILY_5150: 1281 priv->lib = &iwl_dvm_5150_cfg; 1282 break; 1283 case IWL_DEVICE_FAMILY_6000: 1284 case IWL_DEVICE_FAMILY_6000i: 1285 priv->lib = &iwl_dvm_6000_cfg; 1286 break; 1287 case IWL_DEVICE_FAMILY_6005: 1288 priv->lib = &iwl_dvm_6005_cfg; 1289 break; 1290 case IWL_DEVICE_FAMILY_6050: 1291 case IWL_DEVICE_FAMILY_6150: 1292 priv->lib = &iwl_dvm_6050_cfg; 1293 break; 1294 case IWL_DEVICE_FAMILY_6030: 1295 priv->lib = &iwl_dvm_6030_cfg; 1296 break; 1297 default: 1298 break; 1299 } 1300 1301 if (WARN_ON(!priv->lib)) 1302 goto out_free_hw; 1303 1304 /* 1305 * Populate the state variables that the transport layer needs 1306 * to know about. 1307 */ 1308 trans_cfg.op_mode = op_mode; 1309 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 1310 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 1311 1312 switch (iwlwifi_mod_params.amsdu_size) { 1313 case IWL_AMSDU_DEF: 1314 case IWL_AMSDU_4K: 1315 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 1316 break; 1317 case IWL_AMSDU_8K: 1318 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 1319 break; 1320 case IWL_AMSDU_12K: 1321 default: 1322 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 1323 pr_err("Unsupported amsdu_size: %d\n", 1324 iwlwifi_mod_params.amsdu_size); 1325 } 1326 1327 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED; 1328 1329 trans_cfg.command_groups = iwl_dvm_groups; 1330 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups); 1331 1332 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM; 1333 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 1334 driver_data[2]); 1335 1336 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < 1337 priv->trans->trans_cfg->base_params->num_of_queues); 1338 1339 ucode_flags = fw->ucode_capa.flags; 1340 1341 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { 1342 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; 1343 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; 1344 } else { 1345 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1346 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1347 } 1348 1349 /* Configure transport layer */ 1350 iwl_trans_configure(priv->trans, &trans_cfg); 1351 1352 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 1353 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 1354 trans->command_groups = trans_cfg.command_groups; 1355 trans->command_groups_size = trans_cfg.command_groups_size; 1356 1357 /* At this point both hw and priv are allocated. */ 1358 1359 SET_IEEE80211_DEV(priv->hw, priv->trans->dev); 1360 1361 iwl_option_config(priv); 1362 1363 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); 1364 1365 /* bt channel inhibition enabled*/ 1366 priv->bt_ch_announce = true; 1367 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", 1368 (priv->bt_ch_announce) ? "On" : "Off"); 1369 1370 /* these spin locks will be used in apm_ops.init and EEPROM access 1371 * we should init now 1372 */ 1373 spin_lock_init(&priv->statistics.lock); 1374 1375 /*********************** 1376 * 2. Read REV register 1377 ***********************/ 1378 IWL_INFO(priv, "Detected %s, REV=0x%X\n", 1379 priv->trans->name, priv->trans->hw_rev); 1380 1381 if (iwl_trans_start_hw(priv->trans)) 1382 goto out_free_hw; 1383 1384 /* Read the EEPROM */ 1385 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob, 1386 &priv->eeprom_blob_size)) { 1387 IWL_ERR(priv, "Unable to init EEPROM\n"); 1388 goto out_free_hw; 1389 } 1390 1391 /* Reset chip to save power until we load uCode during "up". */ 1392 iwl_trans_stop_device(priv->trans); 1393 1394 priv->nvm_data = iwl_parse_eeprom_data(priv->trans, priv->cfg, 1395 priv->eeprom_blob, 1396 priv->eeprom_blob_size); 1397 if (!priv->nvm_data) 1398 goto out_free_eeprom_blob; 1399 1400 if (iwl_nvm_check_version(priv->nvm_data, priv->trans)) 1401 goto out_free_eeprom; 1402 1403 if (iwl_eeprom_init_hw_params(priv)) 1404 goto out_free_eeprom; 1405 1406 /* extract MAC Address */ 1407 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN); 1408 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); 1409 priv->hw->wiphy->addresses = priv->addresses; 1410 priv->hw->wiphy->n_addresses = 1; 1411 num_mac = priv->nvm_data->n_hw_addrs; 1412 if (num_mac > 1) { 1413 memcpy(priv->addresses[1].addr, priv->addresses[0].addr, 1414 ETH_ALEN); 1415 priv->addresses[1].addr[5]++; 1416 priv->hw->wiphy->n_addresses++; 1417 } 1418 1419 /************************ 1420 * 4. Setup HW constants 1421 ************************/ 1422 iwl_set_hw_params(priv); 1423 1424 if (!(priv->nvm_data->sku_cap_ipan_enable)) { 1425 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n"); 1426 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; 1427 /* 1428 * if not PAN, then don't support P2P -- might be a uCode 1429 * packaging bug or due to the eeprom check above 1430 */ 1431 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1432 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1433 1434 /* Configure transport layer again*/ 1435 iwl_trans_configure(priv->trans, &trans_cfg); 1436 } 1437 1438 /******************* 1439 * 5. Setup priv 1440 *******************/ 1441 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { 1442 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1443 if (i < IWLAGN_FIRST_AMPDU_QUEUE && 1444 i != IWL_DEFAULT_CMD_QUEUE_NUM && 1445 i != IWL_IPAN_CMD_QUEUE_NUM) 1446 priv->queue_to_mac80211[i] = i; 1447 atomic_set(&priv->queue_stop_count[i], 0); 1448 } 1449 1450 if (iwl_init_drv(priv)) 1451 goto out_free_eeprom; 1452 1453 /* At this point both hw and priv are initialized. */ 1454 1455 /******************** 1456 * 6. Setup services 1457 ********************/ 1458 iwl_setup_deferred_work(priv); 1459 iwl_setup_rx_handlers(priv); 1460 1461 iwl_power_initialize(priv); 1462 iwl_tt_initialize(priv); 1463 1464 snprintf(priv->hw->wiphy->fw_version, 1465 sizeof(priv->hw->wiphy->fw_version), 1466 "%s", fw->fw_version); 1467 1468 priv->new_scan_threshold_behaviour = 1469 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); 1470 1471 priv->phy_calib_chain_noise_reset_cmd = 1472 fw->ucode_capa.standard_phy_calibration_size; 1473 priv->phy_calib_chain_noise_gain_cmd = 1474 fw->ucode_capa.standard_phy_calibration_size + 1; 1475 1476 /* initialize all valid contexts */ 1477 iwl_init_context(priv, ucode_flags); 1478 1479 /************************************************** 1480 * This is still part of probe() in a sense... 1481 * 1482 * 7. Setup and register with mac80211 and debugfs 1483 **************************************************/ 1484 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa)) 1485 goto out_destroy_workqueue; 1486 1487 iwl_dbgfs_register(priv, dbgfs_dir); 1488 1489 return op_mode; 1490 1491 out_destroy_workqueue: 1492 iwl_tt_exit(priv); 1493 iwl_cancel_deferred_work(priv); 1494 destroy_workqueue(priv->workqueue); 1495 priv->workqueue = NULL; 1496 iwl_uninit_drv(priv); 1497 out_free_eeprom_blob: 1498 kfree(priv->eeprom_blob); 1499 out_free_eeprom: 1500 kfree(priv->nvm_data); 1501 out_free_hw: 1502 ieee80211_free_hw(priv->hw); 1503 out: 1504 op_mode = NULL; 1505 return op_mode; 1506 } 1507 1508 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) 1509 { 1510 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1511 1512 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); 1513 1514 iwlagn_mac_unregister(priv); 1515 1516 iwl_tt_exit(priv); 1517 1518 kfree(priv->eeprom_blob); 1519 kfree(priv->nvm_data); 1520 1521 /*netif_stop_queue(dev); */ 1522 1523 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes 1524 * priv->workqueue... so we can't take down the workqueue 1525 * until now... */ 1526 destroy_workqueue(priv->workqueue); 1527 priv->workqueue = NULL; 1528 1529 iwl_uninit_drv(priv); 1530 1531 dev_kfree_skb(priv->beacon_skb); 1532 1533 iwl_trans_op_mode_leave(priv->trans); 1534 ieee80211_free_hw(priv->hw); 1535 } 1536 1537 static const char * const desc_lookup_text[] = { 1538 "OK", 1539 "FAIL", 1540 "BAD_PARAM", 1541 "BAD_CHECKSUM", 1542 "NMI_INTERRUPT_WDG", 1543 "SYSASSERT", 1544 "FATAL_ERROR", 1545 "BAD_COMMAND", 1546 "HW_ERROR_TUNE_LOCK", 1547 "HW_ERROR_TEMPERATURE", 1548 "ILLEGAL_CHAN_FREQ", 1549 "VCC_NOT_STABLE", 1550 "FH_ERROR", 1551 "NMI_INTERRUPT_HOST", 1552 "NMI_INTERRUPT_ACTION_PT", 1553 "NMI_INTERRUPT_UNKNOWN", 1554 "UCODE_VERSION_MISMATCH", 1555 "HW_ERROR_ABS_LOCK", 1556 "HW_ERROR_CAL_LOCK_FAIL", 1557 "NMI_INTERRUPT_INST_ACTION_PT", 1558 "NMI_INTERRUPT_DATA_ACTION_PT", 1559 "NMI_TRM_HW_ER", 1560 "NMI_INTERRUPT_TRM", 1561 "NMI_INTERRUPT_BREAK_POINT", 1562 "DEBUG_0", 1563 "DEBUG_1", 1564 "DEBUG_2", 1565 "DEBUG_3", 1566 }; 1567 1568 static struct { char *name; u8 num; } advanced_lookup[] = { 1569 { "NMI_INTERRUPT_WDG", 0x34 }, 1570 { "SYSASSERT", 0x35 }, 1571 { "UCODE_VERSION_MISMATCH", 0x37 }, 1572 { "BAD_COMMAND", 0x38 }, 1573 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 1574 { "FATAL_ERROR", 0x3D }, 1575 { "NMI_TRM_HW_ERR", 0x46 }, 1576 { "NMI_INTERRUPT_TRM", 0x4C }, 1577 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 1578 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 1579 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 1580 { "NMI_INTERRUPT_HOST", 0x66 }, 1581 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 1582 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 1583 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 1584 { "ADVANCED_SYSASSERT", 0 }, 1585 }; 1586 1587 static const char *desc_lookup(u32 num) 1588 { 1589 int i; 1590 int max = ARRAY_SIZE(desc_lookup_text); 1591 1592 if (num < max) 1593 return desc_lookup_text[num]; 1594 1595 max = ARRAY_SIZE(advanced_lookup) - 1; 1596 for (i = 0; i < max; i++) { 1597 if (advanced_lookup[i].num == num) 1598 break; 1599 } 1600 return advanced_lookup[i].name; 1601 } 1602 1603 #define ERROR_START_OFFSET (1 * sizeof(u32)) 1604 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 1605 1606 static void iwl_dump_nic_error_log(struct iwl_priv *priv) 1607 { 1608 struct iwl_trans *trans = priv->trans; 1609 u32 base; 1610 struct iwl_error_event_table table; 1611 1612 base = priv->device_pointers.error_event_table; 1613 if (priv->cur_ucode == IWL_UCODE_INIT) { 1614 if (!base) 1615 base = priv->fw->init_errlog_ptr; 1616 } else { 1617 if (!base) 1618 base = priv->fw->inst_errlog_ptr; 1619 } 1620 1621 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1622 IWL_ERR(priv, 1623 "Not valid error log pointer 0x%08X for %s uCode\n", 1624 base, 1625 (priv->cur_ucode == IWL_UCODE_INIT) 1626 ? "Init" : "RT"); 1627 return; 1628 } 1629 1630 /*TODO: Update dbgfs with ISR error stats obtained below */ 1631 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 1632 1633 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 1634 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 1635 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 1636 priv->status, table.valid); 1637 } 1638 1639 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, 1640 desc_lookup(table.error_id)); 1641 IWL_ERR(priv, "0x%08X | uPc\n", table.pc); 1642 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); 1643 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); 1644 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); 1645 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); 1646 IWL_ERR(priv, "0x%08X | data1\n", table.data1); 1647 IWL_ERR(priv, "0x%08X | data2\n", table.data2); 1648 IWL_ERR(priv, "0x%08X | line\n", table.line); 1649 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); 1650 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); 1651 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); 1652 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); 1653 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); 1654 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); 1655 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); 1656 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); 1657 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); 1658 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); 1659 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); 1660 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); 1661 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); 1662 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); 1663 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); 1664 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); 1665 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); 1666 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); 1667 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); 1668 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 1669 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 1670 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 1671 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); 1672 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); 1673 } 1674 1675 #define EVENT_START_OFFSET (4 * sizeof(u32)) 1676 1677 /* 1678 * iwl_print_event_log - Dump error event log to syslog 1679 */ 1680 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, 1681 u32 num_events, u32 mode, 1682 int pos, char **buf, size_t bufsz) 1683 { 1684 u32 i; 1685 u32 base; /* SRAM byte address of event log header */ 1686 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ 1687 u32 ptr; /* SRAM byte address of log data */ 1688 u32 ev, time, data; /* event log data */ 1689 1690 struct iwl_trans *trans = priv->trans; 1691 1692 if (num_events == 0) 1693 return pos; 1694 1695 base = priv->device_pointers.log_event_table; 1696 if (priv->cur_ucode == IWL_UCODE_INIT) { 1697 if (!base) 1698 base = priv->fw->init_evtlog_ptr; 1699 } else { 1700 if (!base) 1701 base = priv->fw->inst_evtlog_ptr; 1702 } 1703 1704 if (mode == 0) 1705 event_size = 2 * sizeof(u32); 1706 else 1707 event_size = 3 * sizeof(u32); 1708 1709 ptr = base + EVENT_START_OFFSET + (start_idx * event_size); 1710 1711 /* Make sure device is powered up for SRAM reads */ 1712 if (!iwl_trans_grab_nic_access(trans)) 1713 return pos; 1714 1715 /* Set starting address; reads will auto-increment */ 1716 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); 1717 1718 /* "time" is actually "data" for mode 0 (no timestamp). 1719 * place event id # at far right for easier visual parsing. */ 1720 for (i = 0; i < num_events; i++) { 1721 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1722 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1723 if (mode == 0) { 1724 /* data, ev */ 1725 if (bufsz) { 1726 pos += scnprintf(*buf + pos, bufsz - pos, 1727 "EVT_LOG:0x%08x:%04u\n", 1728 time, ev); 1729 } else { 1730 trace_iwlwifi_dev_ucode_event(trans->dev, 0, 1731 time, ev); 1732 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", 1733 time, ev); 1734 } 1735 } else { 1736 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1737 if (bufsz) { 1738 pos += scnprintf(*buf + pos, bufsz - pos, 1739 "EVT_LOGT:%010u:0x%08x:%04u\n", 1740 time, data, ev); 1741 } else { 1742 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", 1743 time, data, ev); 1744 trace_iwlwifi_dev_ucode_event(trans->dev, time, 1745 data, ev); 1746 } 1747 } 1748 } 1749 1750 /* Allow device to power down */ 1751 iwl_trans_release_nic_access(trans); 1752 return pos; 1753 } 1754 1755 /* 1756 * iwl_print_last_event_logs - Dump the newest # of event log to syslog 1757 */ 1758 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, 1759 u32 num_wraps, u32 next_entry, 1760 u32 size, u32 mode, 1761 int pos, char **buf, size_t bufsz) 1762 { 1763 /* 1764 * display the newest DEFAULT_LOG_ENTRIES entries 1765 * i.e the entries just before the next ont that uCode would fill. 1766 */ 1767 if (num_wraps) { 1768 if (next_entry < size) { 1769 pos = iwl_print_event_log(priv, 1770 capacity - (size - next_entry), 1771 size - next_entry, mode, 1772 pos, buf, bufsz); 1773 pos = iwl_print_event_log(priv, 0, 1774 next_entry, mode, 1775 pos, buf, bufsz); 1776 } else 1777 pos = iwl_print_event_log(priv, next_entry - size, 1778 size, mode, pos, buf, bufsz); 1779 } else { 1780 if (next_entry < size) { 1781 pos = iwl_print_event_log(priv, 0, next_entry, 1782 mode, pos, buf, bufsz); 1783 } else { 1784 pos = iwl_print_event_log(priv, next_entry - size, 1785 size, mode, pos, buf, bufsz); 1786 } 1787 } 1788 return pos; 1789 } 1790 1791 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) 1792 1793 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, 1794 char **buf) 1795 { 1796 u32 base; /* SRAM byte address of event log header */ 1797 u32 capacity; /* event log capacity in # entries */ 1798 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 1799 u32 num_wraps; /* # times uCode wrapped to top of log */ 1800 u32 next_entry; /* index of next entry to be written by uCode */ 1801 u32 size; /* # entries that we'll print */ 1802 u32 logsize; 1803 int pos = 0; 1804 size_t bufsz = 0; 1805 struct iwl_trans *trans = priv->trans; 1806 1807 base = priv->device_pointers.log_event_table; 1808 if (priv->cur_ucode == IWL_UCODE_INIT) { 1809 logsize = priv->fw->init_evtlog_size; 1810 if (!base) 1811 base = priv->fw->init_evtlog_ptr; 1812 } else { 1813 logsize = priv->fw->inst_evtlog_size; 1814 if (!base) 1815 base = priv->fw->inst_evtlog_ptr; 1816 } 1817 1818 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1819 IWL_ERR(priv, 1820 "Invalid event log pointer 0x%08X for %s uCode\n", 1821 base, 1822 (priv->cur_ucode == IWL_UCODE_INIT) 1823 ? "Init" : "RT"); 1824 return -EINVAL; 1825 } 1826 1827 /* event log header */ 1828 capacity = iwl_trans_read_mem32(trans, base); 1829 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32))); 1830 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32))); 1831 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32))); 1832 1833 if (capacity > logsize) { 1834 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " 1835 "entries\n", capacity, logsize); 1836 capacity = logsize; 1837 } 1838 1839 if (next_entry > logsize) { 1840 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", 1841 next_entry, logsize); 1842 next_entry = logsize; 1843 } 1844 1845 size = num_wraps ? capacity : next_entry; 1846 1847 /* bail out if nothing in log */ 1848 if (size == 0) { 1849 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); 1850 return pos; 1851 } 1852 1853 if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log) 1854 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) 1855 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; 1856 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", 1857 size); 1858 1859 #ifdef CONFIG_IWLWIFI_DEBUG 1860 if (buf) { 1861 if (full_log) 1862 bufsz = capacity * 48; 1863 else 1864 bufsz = size * 48; 1865 *buf = kmalloc(bufsz, GFP_KERNEL); 1866 if (!*buf) 1867 return -ENOMEM; 1868 } 1869 if (iwl_have_debug_level(IWL_DL_FW) || full_log) { 1870 /* 1871 * if uCode has wrapped back to top of log, 1872 * start at the oldest entry, 1873 * i.e the next one that uCode would fill. 1874 */ 1875 if (num_wraps) 1876 pos = iwl_print_event_log(priv, next_entry, 1877 capacity - next_entry, mode, 1878 pos, buf, bufsz); 1879 /* (then/else) start at top of log */ 1880 pos = iwl_print_event_log(priv, 0, 1881 next_entry, mode, pos, buf, bufsz); 1882 } else 1883 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1884 next_entry, size, mode, 1885 pos, buf, bufsz); 1886 #else 1887 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1888 next_entry, size, mode, 1889 pos, buf, bufsz); 1890 #endif 1891 return pos; 1892 } 1893 1894 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) 1895 { 1896 unsigned int reload_msec; 1897 unsigned long reload_jiffies; 1898 1899 if (iwl_have_debug_level(IWL_DL_FW)) 1900 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); 1901 1902 /* uCode is no longer loaded. */ 1903 priv->ucode_loaded = false; 1904 1905 /* Set the FW error flag -- cleared on iwl_down */ 1906 set_bit(STATUS_FW_ERROR, &priv->status); 1907 1908 iwl_abort_notification_waits(&priv->notif_wait); 1909 1910 /* Keep the restart process from trying to send host 1911 * commands by clearing the ready bit */ 1912 clear_bit(STATUS_READY, &priv->status); 1913 1914 if (!ondemand) { 1915 /* 1916 * If firmware keep reloading, then it indicate something 1917 * serious wrong and firmware having problem to recover 1918 * from it. Instead of keep trying which will fill the syslog 1919 * and hang the system, let's just stop it 1920 */ 1921 reload_jiffies = jiffies; 1922 reload_msec = jiffies_to_msecs((long) reload_jiffies - 1923 (long) priv->reload_jiffies); 1924 priv->reload_jiffies = reload_jiffies; 1925 if (reload_msec <= IWL_MIN_RELOAD_DURATION) { 1926 priv->reload_count++; 1927 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { 1928 IWL_ERR(priv, "BUG_ON, Stop restarting\n"); 1929 return; 1930 } 1931 } else 1932 priv->reload_count = 0; 1933 } 1934 1935 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { 1936 if (iwlwifi_mod_params.fw_restart) { 1937 IWL_DEBUG_FW(priv, 1938 "Restarting adapter due to uCode error.\n"); 1939 queue_work(priv->workqueue, &priv->restart); 1940 } else 1941 IWL_DEBUG_FW(priv, 1942 "Detected FW error, but not restarting\n"); 1943 } 1944 } 1945 1946 static void iwl_nic_error(struct iwl_op_mode *op_mode, bool sync) 1947 { 1948 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1949 1950 IWL_ERR(priv, "Loaded firmware version: %s\n", 1951 priv->fw->fw_version); 1952 1953 iwl_dump_nic_error_log(priv); 1954 iwl_dump_nic_event_log(priv, false, NULL); 1955 1956 iwlagn_fw_error(priv, false); 1957 } 1958 1959 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode) 1960 { 1961 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1962 1963 if (!iwl_check_for_ct_kill(priv)) { 1964 IWL_ERR(priv, "Restarting adapter queue is full\n"); 1965 iwlagn_fw_error(priv, false); 1966 } 1967 } 1968 1969 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3 1970 1971 static void iwl_nic_config(struct iwl_op_mode *op_mode) 1972 { 1973 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1974 1975 /* SKU Control */ 1976 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1977 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 1978 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP, 1979 (CSR_HW_REV_STEP(priv->trans->hw_rev) << 1980 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) | 1981 (CSR_HW_REV_DASH(priv->trans->hw_rev) << 1982 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH)); 1983 1984 /* write radio config values to register */ 1985 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) { 1986 u32 reg_val = 1987 priv->nvm_data->radio_cfg_type << 1988 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | 1989 priv->nvm_data->radio_cfg_step << 1990 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | 1991 priv->nvm_data->radio_cfg_dash << 1992 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 1993 1994 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1995 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 1996 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 1997 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, 1998 reg_val); 1999 2000 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", 2001 priv->nvm_data->radio_cfg_type, 2002 priv->nvm_data->radio_cfg_step, 2003 priv->nvm_data->radio_cfg_dash); 2004 } else { 2005 WARN_ON(1); 2006 } 2007 2008 /* set CSR_HW_CONFIG_REG for uCode use */ 2009 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, 2010 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 2011 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); 2012 2013 /* W/A : NIC is stuck in a reset state after Early PCIe power off 2014 * (PCIe power is lost before PERST# is asserted), 2015 * causing ME FW to lose ownership and not being able to obtain it back. 2016 */ 2017 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, 2018 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 2019 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 2020 2021 if (priv->lib->nic_config) 2022 priv->lib->nic_config(priv); 2023 } 2024 2025 static void iwl_wimax_active(struct iwl_op_mode *op_mode) 2026 { 2027 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2028 2029 clear_bit(STATUS_READY, &priv->status); 2030 IWL_ERR(priv, "RF is used by WiMAX\n"); 2031 } 2032 2033 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 2034 { 2035 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2036 int mq = priv->queue_to_mac80211[queue]; 2037 2038 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2039 return; 2040 2041 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) { 2042 IWL_DEBUG_TX_QUEUES(priv, 2043 "queue %d (mac80211 %d) already stopped\n", 2044 queue, mq); 2045 return; 2046 } 2047 2048 set_bit(mq, &priv->transport_queue_stop); 2049 ieee80211_stop_queue(priv->hw, mq); 2050 } 2051 2052 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 2053 { 2054 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2055 int mq = priv->queue_to_mac80211[queue]; 2056 2057 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2058 return; 2059 2060 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { 2061 IWL_DEBUG_TX_QUEUES(priv, 2062 "queue %d (mac80211 %d) already awake\n", 2063 queue, mq); 2064 return; 2065 } 2066 2067 clear_bit(mq, &priv->transport_queue_stop); 2068 2069 if (!priv->passive_no_rx) 2070 ieee80211_wake_queue(priv->hw, mq); 2071 } 2072 2073 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) 2074 { 2075 int mq; 2076 2077 if (!priv->passive_no_rx) 2078 return; 2079 2080 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { 2081 if (!test_bit(mq, &priv->transport_queue_stop)) { 2082 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq); 2083 ieee80211_wake_queue(priv->hw, mq); 2084 } else { 2085 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq); 2086 } 2087 } 2088 2089 priv->passive_no_rx = false; 2090 } 2091 2092 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 2093 { 2094 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2095 struct ieee80211_tx_info *info; 2096 2097 info = IEEE80211_SKB_CB(skb); 2098 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); 2099 ieee80211_free_txskb(priv->hw, skb); 2100 } 2101 2102 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 2103 { 2104 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2105 2106 if (state) 2107 set_bit(STATUS_RF_KILL_HW, &priv->status); 2108 else 2109 clear_bit(STATUS_RF_KILL_HW, &priv->status); 2110 2111 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); 2112 2113 return false; 2114 } 2115 2116 static const struct iwl_op_mode_ops iwl_dvm_ops = { 2117 .start = iwl_op_mode_dvm_start, 2118 .stop = iwl_op_mode_dvm_stop, 2119 .rx = iwl_rx_dispatch, 2120 .queue_full = iwl_stop_sw_queue, 2121 .queue_not_full = iwl_wake_sw_queue, 2122 .hw_rf_kill = iwl_set_hw_rfkill_state, 2123 .free_skb = iwl_free_skb, 2124 .nic_error = iwl_nic_error, 2125 .cmd_queue_full = iwl_cmd_queue_full, 2126 .nic_config = iwl_nic_config, 2127 .wimax_active = iwl_wimax_active, 2128 }; 2129 2130 /***************************************************************************** 2131 * 2132 * driver and module entry point 2133 * 2134 *****************************************************************************/ 2135 static int __init iwl_init(void) 2136 { 2137 2138 int ret; 2139 2140 ret = iwlagn_rate_control_register(); 2141 if (ret) { 2142 pr_err("Unable to register rate control algorithm: %d\n", ret); 2143 return ret; 2144 } 2145 2146 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); 2147 if (ret) { 2148 pr_err("Unable to register op_mode: %d\n", ret); 2149 iwlagn_rate_control_unregister(); 2150 } 2151 2152 return ret; 2153 } 2154 module_init(iwl_init); 2155 2156 static void __exit iwl_exit(void) 2157 { 2158 iwl_opmode_deregister("iwldvm"); 2159 iwlagn_rate_control_unregister(); 2160 } 2161 module_exit(iwl_exit); 2162