1 // SPDX-License-Identifier: GPL-2.0-only 2 /****************************************************************************** 3 * 4 * Copyright(c) 2003 - 2014, 2018 - 2022 Intel Corporation. All rights reserved. 5 * Copyright(c) 2024-2025 Intel Corporation. All rights reserved. 6 * Copyright(c) 2015 Intel Deutschland GmbH 7 * 8 * Portions of this file are derived from the ipw3945 project, as well 9 * as portions of the ieee80211 subsystem header files. 10 *****************************************************************************/ 11 12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 13 14 #include <linux/kernel.h> 15 #include <linux/module.h> 16 #include <linux/init.h> 17 #include <linux/slab.h> 18 #include <linux/delay.h> 19 #include <linux/sched.h> 20 #include <linux/skbuff.h> 21 #include <linux/netdevice.h> 22 #include <linux/etherdevice.h> 23 #include <linux/if_arp.h> 24 25 #include <net/mac80211.h> 26 27 #include <asm/div64.h> 28 29 #include "iwl-nvm-utils.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 MODULE_IMPORT_NS("IWLWIFI"); 52 53 /* Please keep this array *SORTED* by hex value. 54 * Access is done through binary search. 55 * A warning will be triggered on violation. 56 */ 57 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = { 58 HCMD_NAME(REPLY_ALIVE), 59 HCMD_NAME(REPLY_ERROR), 60 HCMD_NAME(REPLY_ECHO), 61 HCMD_NAME(REPLY_RXON), 62 HCMD_NAME(REPLY_RXON_ASSOC), 63 HCMD_NAME(REPLY_QOS_PARAM), 64 HCMD_NAME(REPLY_RXON_TIMING), 65 HCMD_NAME(REPLY_ADD_STA), 66 HCMD_NAME(REPLY_REMOVE_STA), 67 HCMD_NAME(REPLY_REMOVE_ALL_STA), 68 HCMD_NAME(REPLY_TX), 69 HCMD_NAME(REPLY_TXFIFO_FLUSH), 70 HCMD_NAME(REPLY_WEPKEY), 71 HCMD_NAME(REPLY_LEDS_CMD), 72 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD), 73 HCMD_NAME(COEX_PRIORITY_TABLE_CMD), 74 HCMD_NAME(COEX_MEDIUM_NOTIFICATION), 75 HCMD_NAME(COEX_EVENT_CMD), 76 HCMD_NAME(TEMPERATURE_NOTIFICATION), 77 HCMD_NAME(CALIBRATION_CFG_CMD), 78 HCMD_NAME(CALIBRATION_RES_NOTIFICATION), 79 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION), 80 HCMD_NAME(REPLY_QUIET_CMD), 81 HCMD_NAME(REPLY_CHANNEL_SWITCH), 82 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION), 83 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD), 84 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION), 85 HCMD_NAME(POWER_TABLE_CMD), 86 HCMD_NAME(PM_SLEEP_NOTIFICATION), 87 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC), 88 HCMD_NAME(REPLY_SCAN_CMD), 89 HCMD_NAME(REPLY_SCAN_ABORT_CMD), 90 HCMD_NAME(SCAN_START_NOTIFICATION), 91 HCMD_NAME(SCAN_RESULTS_NOTIFICATION), 92 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION), 93 HCMD_NAME(BEACON_NOTIFICATION), 94 HCMD_NAME(REPLY_TX_BEACON), 95 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION), 96 HCMD_NAME(REPLY_TX_POWER_DBM_CMD), 97 HCMD_NAME(QUIET_NOTIFICATION), 98 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD), 99 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1), 100 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 101 HCMD_NAME(MEASURE_ABORT_NOTIFICATION), 102 HCMD_NAME(REPLY_BT_CONFIG), 103 HCMD_NAME(REPLY_STATISTICS_CMD), 104 HCMD_NAME(STATISTICS_NOTIFICATION), 105 HCMD_NAME(REPLY_CARD_STATE_CMD), 106 HCMD_NAME(CARD_STATE_NOTIFICATION), 107 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 108 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD), 109 HCMD_NAME(SENSITIVITY_CMD), 110 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD), 111 HCMD_NAME(REPLY_WIPAN_PARAMS), 112 HCMD_NAME(REPLY_WIPAN_RXON), 113 HCMD_NAME(REPLY_WIPAN_RXON_TIMING), 114 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC), 115 HCMD_NAME(REPLY_WIPAN_QOS_PARAM), 116 HCMD_NAME(REPLY_WIPAN_WEPKEY), 117 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH), 118 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION), 119 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE), 120 HCMD_NAME(REPLY_RX_PHY_CMD), 121 HCMD_NAME(REPLY_RX_MPDU_CMD), 122 HCMD_NAME(REPLY_RX), 123 HCMD_NAME(REPLY_COMPRESSED_BA), 124 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE), 125 HCMD_NAME(REPLY_BT_COEX_PROT_ENV), 126 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF), 127 HCMD_NAME(REPLY_D3_CONFIG), 128 HCMD_NAME(REPLY_WOWLAN_PATTERNS), 129 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER), 130 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS), 131 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS), 132 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL), 133 HCMD_NAME(REPLY_WOWLAN_GET_STATUS), 134 }; 135 136 static const struct iwl_hcmd_arr iwl_dvm_groups[] = { 137 [0x0] = HCMD_ARR(iwl_dvm_cmd_names), 138 }; 139 140 static const struct iwl_op_mode_ops iwl_dvm_ops; 141 142 void iwl_update_chain_flags(struct iwl_priv *priv) 143 { 144 struct iwl_rxon_context *ctx; 145 146 for_each_context(priv, ctx) { 147 iwlagn_set_rxon_chain(priv, ctx); 148 if (ctx->active.rx_chain != ctx->staging.rx_chain) 149 iwlagn_commit_rxon(priv, ctx); 150 } 151 } 152 153 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ 154 static void iwl_set_beacon_tim(struct iwl_priv *priv, 155 struct iwl_tx_beacon_cmd *tx_beacon_cmd, 156 u8 *beacon, u32 frame_size) 157 { 158 u16 tim_idx; 159 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 160 161 /* 162 * The index is relative to frame start but we start looking at the 163 * variable-length part of the beacon. 164 */ 165 tim_idx = mgmt->u.beacon.variable - beacon; 166 167 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 168 while ((tim_idx < (frame_size - 2)) && 169 (beacon[tim_idx] != WLAN_EID_TIM)) 170 tim_idx += beacon[tim_idx+1] + 2; 171 172 /* If TIM field was found, set variables */ 173 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 174 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); 175 tx_beacon_cmd->tim_size = beacon[tim_idx+1]; 176 } else 177 IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); 178 } 179 180 int iwlagn_send_beacon_cmd(struct iwl_priv *priv) 181 { 182 struct iwl_tx_beacon_cmd *tx_beacon_cmd; 183 struct iwl_host_cmd cmd = { 184 .id = REPLY_TX_BEACON, 185 }; 186 struct ieee80211_tx_info *info; 187 u32 frame_size; 188 u32 rate_flags; 189 u32 rate; 190 191 /* 192 * We have to set up the TX command, the TX Beacon command, and the 193 * beacon contents. 194 */ 195 196 lockdep_assert_held(&priv->mutex); 197 198 if (!priv->beacon_ctx) { 199 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); 200 return 0; 201 } 202 203 if (WARN_ON(!priv->beacon_skb)) 204 return -EINVAL; 205 206 /* Allocate beacon command */ 207 if (!priv->beacon_cmd) 208 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); 209 tx_beacon_cmd = priv->beacon_cmd; 210 if (!tx_beacon_cmd) 211 return -ENOMEM; 212 213 frame_size = priv->beacon_skb->len; 214 215 /* Set up TX command fields */ 216 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); 217 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; 218 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; 219 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | 220 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; 221 222 /* Set up TX beacon command fields */ 223 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, 224 frame_size); 225 226 /* Set up packet rate and flags */ 227 info = IEEE80211_SKB_CB(priv->beacon_skb); 228 229 /* 230 * Let's set up the rate at least somewhat correctly; 231 * it will currently not actually be used by the uCode, 232 * it uses the broadcast station's rate instead. 233 */ 234 if (info->control.rates[0].idx < 0 || 235 info->control.rates[0].flags & IEEE80211_TX_RC_MCS) 236 rate = 0; 237 else 238 rate = info->control.rates[0].idx; 239 240 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, 241 priv->nvm_data->valid_tx_ant); 242 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); 243 244 /* In mac80211, rates for 5 GHz start at 0 */ 245 if (info->band == NL80211_BAND_5GHZ) 246 rate += IWL_FIRST_OFDM_RATE; 247 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) 248 rate_flags |= RATE_MCS_CCK_MSK; 249 250 tx_beacon_cmd->tx.rate_n_flags = 251 iwl_hw_set_rate_n_flags(rate, rate_flags); 252 253 /* Submit command */ 254 cmd.len[0] = sizeof(*tx_beacon_cmd); 255 cmd.data[0] = tx_beacon_cmd; 256 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 257 cmd.len[1] = frame_size; 258 cmd.data[1] = priv->beacon_skb->data; 259 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; 260 261 return iwl_dvm_send_cmd(priv, &cmd); 262 } 263 264 static void iwl_bg_beacon_update(struct work_struct *work) 265 { 266 struct iwl_priv *priv = 267 container_of(work, struct iwl_priv, beacon_update); 268 struct sk_buff *beacon; 269 270 mutex_lock(&priv->mutex); 271 if (!priv->beacon_ctx) { 272 IWL_ERR(priv, "updating beacon w/o beacon context!\n"); 273 goto out; 274 } 275 276 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { 277 /* 278 * The ucode will send beacon notifications even in 279 * IBSS mode, but we don't want to process them. But 280 * we need to defer the type check to here due to 281 * requiring locking around the beacon_ctx access. 282 */ 283 goto out; 284 } 285 286 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ 287 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif, 0); 288 if (!beacon) { 289 IWL_ERR(priv, "update beacon failed -- keeping old\n"); 290 goto out; 291 } 292 293 /* new beacon skb is allocated every time; dispose previous.*/ 294 dev_kfree_skb(priv->beacon_skb); 295 296 priv->beacon_skb = beacon; 297 298 iwlagn_send_beacon_cmd(priv); 299 out: 300 mutex_unlock(&priv->mutex); 301 } 302 303 static void iwl_bg_bt_runtime_config(struct work_struct *work) 304 { 305 struct iwl_priv *priv = 306 container_of(work, struct iwl_priv, bt_runtime_config); 307 308 mutex_lock(&priv->mutex); 309 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 310 goto out; 311 312 /* dont send host command if rf-kill is on */ 313 if (!iwl_is_ready_rf(priv)) 314 goto out; 315 316 iwlagn_send_advance_bt_config(priv); 317 out: 318 mutex_unlock(&priv->mutex); 319 } 320 321 static void iwl_bg_bt_full_concurrency(struct work_struct *work) 322 { 323 struct iwl_priv *priv = 324 container_of(work, struct iwl_priv, bt_full_concurrency); 325 struct iwl_rxon_context *ctx; 326 327 mutex_lock(&priv->mutex); 328 329 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 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", 337 priv->bt_full_concurrent ? 338 "full concurrency" : "3-wire"); 339 340 /* 341 * LQ & RXON updated cmds must be sent before BT Config cmd 342 * to avoid 3-wire collisions 343 */ 344 for_each_context(priv, ctx) { 345 iwlagn_set_rxon_chain(priv, ctx); 346 iwlagn_commit_rxon(priv, ctx); 347 } 348 349 iwlagn_send_advance_bt_config(priv); 350 out: 351 mutex_unlock(&priv->mutex); 352 } 353 354 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) 355 { 356 struct iwl_statistics_cmd statistics_cmd = { 357 .configuration_flags = 358 clear ? IWL_STATS_CONF_CLEAR_STATS : 0, 359 }; 360 361 if (flags & CMD_ASYNC) 362 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 363 CMD_ASYNC, 364 sizeof(struct iwl_statistics_cmd), 365 &statistics_cmd); 366 else 367 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0, 368 sizeof(struct iwl_statistics_cmd), 369 &statistics_cmd); 370 } 371 372 /* 373 * iwl_bg_statistics_periodic - Timer callback to queue statistics 374 * 375 * This callback is provided in order to send a statistics request. 376 * 377 * This timer function is continually reset to execute within 378 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION 379 * was received. We need to ensure we receive the statistics in order 380 * to update the temperature used for calibrating the TXPOWER. 381 */ 382 static void iwl_bg_statistics_periodic(struct timer_list *t) 383 { 384 struct iwl_priv *priv = timer_container_of(priv, t, 385 statistics_periodic); 386 387 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 388 return; 389 390 /* dont send host command if rf-kill is on */ 391 if (!iwl_is_ready_rf(priv)) 392 return; 393 394 iwl_send_statistics_request(priv, CMD_ASYNC, false); 395 } 396 397 398 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, 399 u32 start_idx, u32 num_events, 400 u32 capacity, u32 mode) 401 { 402 u32 i; 403 u32 ptr; /* SRAM byte address of log data */ 404 u32 ev, time, data; /* event log data */ 405 406 if (mode == 0) 407 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); 408 else 409 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); 410 411 /* Make sure device is powered up for SRAM reads */ 412 if (!iwl_trans_grab_nic_access(priv->trans)) 413 return; 414 415 /* Set starting address; reads will auto-increment */ 416 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); 417 418 /* 419 * Refuse to read more than would have fit into the log from 420 * the current start_idx. This used to happen due to the race 421 * described below, but now WARN because the code below should 422 * prevent it from happening here. 423 */ 424 if (WARN_ON(num_events > capacity - start_idx)) 425 num_events = capacity - start_idx; 426 427 /* 428 * "time" is actually "data" for mode 0 (no timestamp). 429 * place event id # at far right for easier visual parsing. 430 */ 431 for (i = 0; i < num_events; i++) { 432 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 433 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 434 if (mode == 0) { 435 trace_iwlwifi_dev_ucode_cont_event( 436 priv->trans->dev, 0, time, ev); 437 } else { 438 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 439 trace_iwlwifi_dev_ucode_cont_event( 440 priv->trans->dev, time, data, ev); 441 } 442 } 443 /* Allow device to power down */ 444 iwl_trans_release_nic_access(priv->trans); 445 } 446 447 static void iwl_continuous_event_trace(struct iwl_priv *priv) 448 { 449 u32 capacity; /* event log capacity in # entries */ 450 struct { 451 u32 capacity; 452 u32 mode; 453 u32 wrap_counter; 454 u32 write_counter; 455 } __packed read; 456 u32 base; /* SRAM byte address of event log header */ 457 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 458 u32 num_wraps; /* # times uCode wrapped to top of log */ 459 u32 next_entry; /* index of next entry to be written by uCode */ 460 461 base = priv->device_pointers.log_event_table; 462 if (iwlagn_hw_valid_rtc_data_addr(base)) { 463 iwl_trans_read_mem_bytes(priv->trans, base, 464 &read, sizeof(read)); 465 capacity = read.capacity; 466 mode = read.mode; 467 num_wraps = read.wrap_counter; 468 next_entry = read.write_counter; 469 } else 470 return; 471 472 /* 473 * Unfortunately, the uCode doesn't use temporary variables. 474 * Therefore, it can happen that we read next_entry == capacity, 475 * which really means next_entry == 0. 476 */ 477 if (unlikely(next_entry == capacity)) 478 next_entry = 0; 479 /* 480 * Additionally, the uCode increases the write pointer before 481 * the wraps counter, so if the write pointer is smaller than 482 * the old write pointer (wrap occurred) but we read that no 483 * wrap occurred, we actually read between the next_entry and 484 * num_wraps update (this does happen in practice!!) -- take 485 * that into account by increasing num_wraps. 486 */ 487 if (unlikely(next_entry < priv->event_log.next_entry && 488 num_wraps == priv->event_log.num_wraps)) 489 num_wraps++; 490 491 if (num_wraps == priv->event_log.num_wraps) { 492 iwl_print_cont_event_trace( 493 priv, base, priv->event_log.next_entry, 494 next_entry - priv->event_log.next_entry, 495 capacity, mode); 496 497 priv->event_log.non_wraps_count++; 498 } else { 499 if (num_wraps - priv->event_log.num_wraps > 1) 500 priv->event_log.wraps_more_count++; 501 else 502 priv->event_log.wraps_once_count++; 503 504 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, 505 num_wraps - priv->event_log.num_wraps, 506 next_entry, priv->event_log.next_entry); 507 508 if (next_entry < priv->event_log.next_entry) { 509 iwl_print_cont_event_trace( 510 priv, base, priv->event_log.next_entry, 511 capacity - priv->event_log.next_entry, 512 capacity, mode); 513 514 iwl_print_cont_event_trace( 515 priv, base, 0, next_entry, capacity, mode); 516 } else { 517 iwl_print_cont_event_trace( 518 priv, base, next_entry, 519 capacity - next_entry, 520 capacity, mode); 521 522 iwl_print_cont_event_trace( 523 priv, base, 0, next_entry, capacity, mode); 524 } 525 } 526 527 priv->event_log.num_wraps = num_wraps; 528 priv->event_log.next_entry = next_entry; 529 } 530 531 /* 532 * iwl_bg_ucode_trace - Timer callback to log ucode event 533 * 534 * The timer is continually set to execute every 535 * UCODE_TRACE_PERIOD milliseconds after the last timer expired 536 * this function is to perform continuous uCode event logging operation 537 * if enabled 538 */ 539 static void iwl_bg_ucode_trace(struct timer_list *t) 540 { 541 struct iwl_priv *priv = timer_container_of(priv, t, ucode_trace); 542 543 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 544 return; 545 546 if (priv->event_log.ucode_trace) { 547 iwl_continuous_event_trace(priv); 548 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ 549 mod_timer(&priv->ucode_trace, 550 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); 551 } 552 } 553 554 static void iwl_bg_tx_flush(struct work_struct *work) 555 { 556 struct iwl_priv *priv = 557 container_of(work, struct iwl_priv, tx_flush); 558 559 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 560 return; 561 562 /* do nothing if rf-kill is on */ 563 if (!iwl_is_ready_rf(priv)) 564 return; 565 566 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); 567 iwlagn_dev_txfifo_flush(priv); 568 } 569 570 /* 571 * queue/FIFO/AC mapping definitions 572 */ 573 574 static const u8 iwlagn_bss_ac_to_fifo[] = { 575 IWL_TX_FIFO_VO, 576 IWL_TX_FIFO_VI, 577 IWL_TX_FIFO_BE, 578 IWL_TX_FIFO_BK, 579 }; 580 581 static const u8 iwlagn_bss_ac_to_queue[] = { 582 0, 1, 2, 3, 583 }; 584 585 static const u8 iwlagn_pan_ac_to_fifo[] = { 586 IWL_TX_FIFO_VO_IPAN, 587 IWL_TX_FIFO_VI_IPAN, 588 IWL_TX_FIFO_BE_IPAN, 589 IWL_TX_FIFO_BK_IPAN, 590 }; 591 592 static const u8 iwlagn_pan_ac_to_queue[] = { 593 7, 6, 5, 4, 594 }; 595 596 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) 597 { 598 int i; 599 600 /* 601 * The default context is always valid, 602 * the PAN context depends on uCode. 603 */ 604 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); 605 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) 606 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 607 608 for (i = 0; i < NUM_IWL_RXON_CTX; i++) 609 priv->contexts[i].ctxid = i; 610 611 priv->contexts[IWL_RXON_CTX_BSS].always_active = true; 612 priv->contexts[IWL_RXON_CTX_BSS].is_active = true; 613 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; 614 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; 615 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; 616 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; 617 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; 618 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; 619 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 620 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = 621 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR); 622 priv->contexts[IWL_RXON_CTX_BSS].interface_modes = 623 BIT(NL80211_IFTYPE_STATION); 624 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; 625 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; 626 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; 627 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; 628 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, 629 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); 630 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, 631 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); 632 633 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; 634 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = 635 REPLY_WIPAN_RXON_TIMING; 636 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = 637 REPLY_WIPAN_RXON_ASSOC; 638 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; 639 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; 640 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; 641 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; 642 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; 643 priv->contexts[IWL_RXON_CTX_PAN].interface_modes = 644 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); 645 646 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; 647 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; 648 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; 649 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, 650 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); 651 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, 652 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); 653 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; 654 655 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); 656 } 657 658 static void iwl_rf_kill_ct_config(struct iwl_priv *priv) 659 { 660 struct iwl_ct_kill_config cmd; 661 struct iwl_ct_kill_throttling_config adv_cmd; 662 int ret = 0; 663 664 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 665 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); 666 667 priv->thermal_throttle.ct_kill_toggle = false; 668 669 if (priv->lib->support_ct_kill_exit) { 670 adv_cmd.critical_temperature_enter = 671 cpu_to_le32(priv->hw_params.ct_kill_threshold); 672 adv_cmd.critical_temperature_exit = 673 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); 674 675 ret = iwl_dvm_send_cmd_pdu(priv, 676 REPLY_CT_KILL_CONFIG_CMD, 677 0, sizeof(adv_cmd), &adv_cmd); 678 if (ret) 679 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 680 else 681 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 682 "succeeded, critical temperature enter is %d," 683 "exit is %d\n", 684 priv->hw_params.ct_kill_threshold, 685 priv->hw_params.ct_kill_exit_threshold); 686 } else { 687 cmd.critical_temperature_R = 688 cpu_to_le32(priv->hw_params.ct_kill_threshold); 689 690 ret = iwl_dvm_send_cmd_pdu(priv, 691 REPLY_CT_KILL_CONFIG_CMD, 692 0, sizeof(cmd), &cmd); 693 if (ret) 694 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 695 else 696 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 697 "succeeded, " 698 "critical temperature is %d\n", 699 priv->hw_params.ct_kill_threshold); 700 } 701 } 702 703 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) 704 { 705 struct iwl_calib_cfg_cmd calib_cfg_cmd; 706 struct iwl_host_cmd cmd = { 707 .id = CALIBRATION_CFG_CMD, 708 .len = { sizeof(struct iwl_calib_cfg_cmd), }, 709 .data = { &calib_cfg_cmd, }, 710 }; 711 712 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); 713 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; 714 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); 715 716 return iwl_dvm_send_cmd(priv, &cmd); 717 } 718 719 720 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) 721 { 722 struct iwl_tx_ant_config_cmd tx_ant_cmd = { 723 .valid = cpu_to_le32(valid_tx_ant), 724 }; 725 726 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { 727 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); 728 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0, 729 sizeof(struct iwl_tx_ant_config_cmd), 730 &tx_ant_cmd); 731 } else { 732 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); 733 return -EOPNOTSUPP; 734 } 735 } 736 737 static void iwl_send_bt_config(struct iwl_priv *priv) 738 { 739 struct iwl_bt_cmd bt_cmd = { 740 .lead_time = BT_LEAD_TIME_DEF, 741 .max_kill = BT_MAX_KILL_DEF, 742 .kill_ack_mask = 0, 743 .kill_cts_mask = 0, 744 }; 745 746 if (!iwlwifi_mod_params.bt_coex_active) 747 bt_cmd.flags = BT_COEX_DISABLE; 748 else 749 bt_cmd.flags = BT_COEX_ENABLE; 750 751 priv->bt_enable_flag = bt_cmd.flags; 752 IWL_DEBUG_INFO(priv, "BT coex %s\n", 753 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); 754 755 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 756 0, sizeof(struct iwl_bt_cmd), &bt_cmd)) 757 IWL_ERR(priv, "failed to send BT Coex Config\n"); 758 } 759 760 /* 761 * iwl_alive_start - called after REPLY_ALIVE notification received 762 * from protocol/runtime uCode (initialization uCode's 763 * Alive gets handled by iwl_init_alive_start()). 764 */ 765 int iwl_alive_start(struct iwl_priv *priv) 766 { 767 int ret = 0; 768 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 769 770 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); 771 772 /* After the ALIVE response, we can send host commands to the uCode */ 773 set_bit(STATUS_ALIVE, &priv->status); 774 775 if (iwl_is_rfkill(priv)) 776 return -ERFKILL; 777 778 if (priv->event_log.ucode_trace) { 779 /* start collecting data now */ 780 mod_timer(&priv->ucode_trace, jiffies); 781 } 782 783 /* download priority table before any calibration request */ 784 if (priv->lib->bt_params && 785 priv->lib->bt_params->advanced_bt_coexist) { 786 /* Configure Bluetooth device coexistence support */ 787 if (priv->lib->bt_params->bt_sco_disable) 788 priv->bt_enable_pspoll = false; 789 else 790 priv->bt_enable_pspoll = true; 791 792 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 793 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 794 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 795 iwlagn_send_advance_bt_config(priv); 796 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; 797 priv->cur_rssi_ctx = NULL; 798 799 iwl_send_prio_tbl(priv); 800 801 /* FIXME: w/a to force change uCode BT state machine */ 802 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, 803 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 804 if (ret) 805 return ret; 806 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, 807 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 808 if (ret) 809 return ret; 810 } else if (priv->lib->bt_params) { 811 /* 812 * default is 2-wire BT coexexistence support 813 */ 814 iwl_send_bt_config(priv); 815 } 816 817 /* 818 * Perform runtime calibrations, including DC calibration. 819 */ 820 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); 821 822 ieee80211_wake_queues(priv->hw); 823 824 /* Configure Tx antenna selection based on H/W config */ 825 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant); 826 827 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { 828 struct iwl_rxon_cmd *active = (void *)(uintptr_t)&ctx->active; 829 830 /* apply any changes in staging */ 831 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; 832 active->filter_flags &= ~RXON_FILTER_ASSOC_MSK; 833 } else { 834 struct iwl_rxon_context *tmp; 835 /* Initialize our rx_config data */ 836 for_each_context(priv, tmp) 837 iwl_connection_init_rx_config(priv, tmp); 838 839 iwlagn_set_rxon_chain(priv, ctx); 840 } 841 842 if (!priv->wowlan) { 843 /* WoWLAN ucode will not reply in the same way, skip it */ 844 iwl_reset_run_time_calib(priv); 845 } 846 847 set_bit(STATUS_READY, &priv->status); 848 849 /* Configure the adapter for unassociated operation */ 850 ret = iwlagn_commit_rxon(priv, ctx); 851 if (ret) 852 return ret; 853 854 /* At this point, the NIC is initialized and operational */ 855 iwl_rf_kill_ct_config(priv); 856 857 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); 858 859 return iwl_power_update_mode(priv, true); 860 } 861 862 /** 863 * iwl_clear_driver_stations - clear knowledge of all stations from driver 864 * @priv: iwl priv struct 865 * 866 * This is called during iwl_down() to make sure that in the case 867 * we're coming there from a hardware restart mac80211 will be 868 * able to reconfigure stations -- if we're getting there in the 869 * normal down flow then the stations will already be cleared. 870 */ 871 static void iwl_clear_driver_stations(struct iwl_priv *priv) 872 { 873 struct iwl_rxon_context *ctx; 874 875 spin_lock_bh(&priv->sta_lock); 876 memset(priv->stations, 0, sizeof(priv->stations)); 877 priv->num_stations = 0; 878 879 priv->ucode_key_table = 0; 880 881 for_each_context(priv, ctx) { 882 /* 883 * Remove all key information that is not stored as part 884 * of station information since mac80211 may not have had 885 * a chance to remove all the keys. When device is 886 * reconfigured by mac80211 after an error all keys will 887 * be reconfigured. 888 */ 889 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 890 ctx->key_mapping_keys = 0; 891 } 892 893 spin_unlock_bh(&priv->sta_lock); 894 } 895 896 void iwl_down(struct iwl_priv *priv) 897 { 898 int exit_pending; 899 900 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); 901 902 lockdep_assert_held(&priv->mutex); 903 904 iwl_scan_cancel_timeout(priv, 200); 905 906 exit_pending = 907 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); 908 909 iwl_clear_ucode_stations(priv, NULL); 910 iwl_dealloc_bcast_stations(priv); 911 iwl_clear_driver_stations(priv); 912 913 /* reset BT coex data */ 914 priv->bt_status = 0; 915 priv->cur_rssi_ctx = NULL; 916 priv->bt_is_sco = 0; 917 if (priv->lib->bt_params) 918 priv->bt_traffic_load = 919 priv->lib->bt_params->bt_init_traffic_load; 920 else 921 priv->bt_traffic_load = 0; 922 priv->bt_full_concurrent = false; 923 priv->bt_ci_compliance = 0; 924 925 /* Wipe out the EXIT_PENDING status bit if we are not actually 926 * exiting the module */ 927 if (!exit_pending) 928 clear_bit(STATUS_EXIT_PENDING, &priv->status); 929 930 if (priv->mac80211_registered) 931 ieee80211_stop_queues(priv->hw); 932 933 priv->ucode_loaded = false; 934 iwl_trans_stop_device(priv->trans); 935 936 /* Set num_aux_in_flight must be done after the transport is stopped */ 937 atomic_set(&priv->num_aux_in_flight, 0); 938 939 /* Clear out all status bits but a few that are stable across reset */ 940 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << 941 STATUS_RF_KILL_HW | 942 test_bit(STATUS_FW_ERROR, &priv->status) << 943 STATUS_FW_ERROR | 944 test_bit(STATUS_EXIT_PENDING, &priv->status) << 945 STATUS_EXIT_PENDING; 946 947 dev_kfree_skb(priv->beacon_skb); 948 priv->beacon_skb = NULL; 949 } 950 951 /***************************************************************************** 952 * 953 * Workqueue callbacks 954 * 955 *****************************************************************************/ 956 957 static void iwl_bg_run_time_calib_work(struct work_struct *work) 958 { 959 struct iwl_priv *priv = container_of(work, struct iwl_priv, 960 run_time_calib_work); 961 962 mutex_lock(&priv->mutex); 963 964 if (test_bit(STATUS_EXIT_PENDING, &priv->status) || 965 test_bit(STATUS_SCANNING, &priv->status)) { 966 mutex_unlock(&priv->mutex); 967 return; 968 } 969 970 if (priv->start_calib) { 971 iwl_chain_noise_calibration(priv); 972 iwl_sensitivity_calibration(priv); 973 } 974 975 mutex_unlock(&priv->mutex); 976 } 977 978 void iwlagn_prepare_restart(struct iwl_priv *priv) 979 { 980 bool bt_full_concurrent; 981 u8 bt_ci_compliance; 982 u8 bt_load; 983 u8 bt_status; 984 bool bt_is_sco; 985 int i; 986 987 lockdep_assert_held(&priv->mutex); 988 989 priv->is_open = 0; 990 991 /* 992 * __iwl_down() will clear the BT status variables, 993 * which is correct, but when we restart we really 994 * want to keep them so restore them afterwards. 995 * 996 * The restart process will later pick them up and 997 * re-configure the hw when we reconfigure the BT 998 * command. 999 */ 1000 bt_full_concurrent = priv->bt_full_concurrent; 1001 bt_ci_compliance = priv->bt_ci_compliance; 1002 bt_load = priv->bt_traffic_load; 1003 bt_status = priv->bt_status; 1004 bt_is_sco = priv->bt_is_sco; 1005 1006 iwl_down(priv); 1007 1008 priv->bt_full_concurrent = bt_full_concurrent; 1009 priv->bt_ci_compliance = bt_ci_compliance; 1010 priv->bt_traffic_load = bt_load; 1011 priv->bt_status = bt_status; 1012 priv->bt_is_sco = bt_is_sco; 1013 1014 /* reset aggregation queues */ 1015 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) 1016 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1017 /* and stop counts */ 1018 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 1019 atomic_set(&priv->queue_stop_count[i], 0); 1020 1021 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); 1022 } 1023 1024 static void iwl_bg_restart(struct work_struct *data) 1025 { 1026 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); 1027 1028 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 1029 return; 1030 1031 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { 1032 mutex_lock(&priv->mutex); 1033 iwlagn_prepare_restart(priv); 1034 mutex_unlock(&priv->mutex); 1035 iwl_cancel_deferred_work(priv); 1036 if (priv->mac80211_registered) 1037 ieee80211_restart_hw(priv->hw); 1038 else 1039 IWL_ERR(priv, 1040 "Cannot request restart before registering with mac80211\n"); 1041 } else { 1042 WARN_ON(1); 1043 } 1044 } 1045 1046 /***************************************************************************** 1047 * 1048 * driver setup and teardown 1049 * 1050 *****************************************************************************/ 1051 1052 static void iwl_setup_deferred_work(struct iwl_priv *priv) 1053 { 1054 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0); 1055 1056 INIT_WORK(&priv->restart, iwl_bg_restart); 1057 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); 1058 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); 1059 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); 1060 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); 1061 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); 1062 1063 iwl_setup_scan_deferred_work(priv); 1064 1065 if (priv->lib->bt_params) 1066 iwlagn_bt_setup_deferred_work(priv); 1067 1068 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0); 1069 1070 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0); 1071 } 1072 1073 void iwl_cancel_deferred_work(struct iwl_priv *priv) 1074 { 1075 if (priv->lib->bt_params) 1076 iwlagn_bt_cancel_deferred_work(priv); 1077 1078 cancel_work_sync(&priv->run_time_calib_work); 1079 cancel_work_sync(&priv->beacon_update); 1080 1081 iwl_cancel_scan_deferred_work(priv); 1082 1083 cancel_work_sync(&priv->bt_full_concurrency); 1084 cancel_work_sync(&priv->bt_runtime_config); 1085 1086 timer_delete_sync(&priv->statistics_periodic); 1087 timer_delete_sync(&priv->ucode_trace); 1088 } 1089 1090 static int iwl_init_drv(struct iwl_priv *priv) 1091 { 1092 spin_lock_init(&priv->sta_lock); 1093 1094 mutex_init(&priv->mutex); 1095 1096 INIT_LIST_HEAD(&priv->calib_results); 1097 1098 priv->band = NL80211_BAND_2GHZ; 1099 1100 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold; 1101 1102 priv->iw_mode = NL80211_IFTYPE_STATION; 1103 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; 1104 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; 1105 priv->agg_tids_count = 0; 1106 1107 priv->rx_statistics_jiffies = jiffies; 1108 1109 /* Choose which receivers/antennas to use */ 1110 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); 1111 1112 iwl_init_scan_params(priv); 1113 1114 /* init bt coex */ 1115 if (priv->lib->bt_params && 1116 priv->lib->bt_params->advanced_bt_coexist) { 1117 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 1118 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 1119 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 1120 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; 1121 priv->bt_duration = BT_DURATION_LIMIT_DEF; 1122 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; 1123 } 1124 1125 return 0; 1126 } 1127 1128 static void iwl_uninit_drv(struct iwl_priv *priv) 1129 { 1130 kfree(priv->scan_cmd); 1131 kfree(priv->beacon_cmd); 1132 kfree(rcu_dereference_raw(priv->noa_data)); 1133 iwl_calib_free_results(priv); 1134 #ifdef CONFIG_IWLWIFI_DEBUGFS 1135 kfree(priv->wowlan_sram); 1136 #endif 1137 } 1138 1139 static void iwl_set_hw_params(struct iwl_priv *priv) 1140 { 1141 /* there are no devices with HT but without HT40 on all bands */ 1142 if (priv->cfg->ht_params.ht40_bands) 1143 priv->hw_params.use_rts_for_aggregation = 1144 priv->cfg->ht_params.use_rts_for_aggregation; 1145 1146 /* Device-specific setup */ 1147 priv->lib->set_hw_params(priv); 1148 } 1149 1150 1151 1152 /* show what optional capabilities we have */ 1153 static void iwl_option_config(struct iwl_priv *priv) 1154 { 1155 #ifdef CONFIG_IWLWIFI_DEBUG 1156 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); 1157 #else 1158 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); 1159 #endif 1160 1161 #ifdef CONFIG_IWLWIFI_DEBUGFS 1162 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); 1163 #else 1164 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); 1165 #endif 1166 1167 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING 1168 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); 1169 #else 1170 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); 1171 #endif 1172 } 1173 1174 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) 1175 { 1176 struct iwl_nvm_data *data = priv->nvm_data; 1177 1178 /* all HT devices also have HT40 on at least one band */ 1179 if (data->sku_cap_11n_enable && 1180 !priv->cfg->ht_params.ht40_bands) { 1181 IWL_ERR(priv, "Invalid 11n configuration\n"); 1182 return -EINVAL; 1183 } 1184 1185 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable && 1186 !data->sku_cap_band_52ghz_enable) { 1187 IWL_ERR(priv, "Invalid device sku\n"); 1188 return -EINVAL; 1189 } 1190 1191 IWL_DEBUG_INFO(priv, 1192 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n", 1193 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled", 1194 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled", 1195 data->sku_cap_11n_enable ? "" : "NOT", "enabled"); 1196 1197 priv->hw_params.tx_chains_num = 1198 num_of_ant(data->valid_tx_ant); 1199 if (priv->cfg->rx_with_siso_diversity) 1200 priv->hw_params.rx_chains_num = 1; 1201 else 1202 priv->hw_params.rx_chains_num = 1203 num_of_ant(data->valid_rx_ant); 1204 1205 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", 1206 data->valid_tx_ant, 1207 data->valid_rx_ant); 1208 1209 return 0; 1210 } 1211 1212 static int iwl_nvm_check_version(struct iwl_nvm_data *data, 1213 struct iwl_trans *trans) 1214 { 1215 if (data->nvm_version >= trans->cfg->nvm_ver || 1216 data->calib_version >= trans->cfg->nvm_calib_ver) { 1217 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n", 1218 data->nvm_version, data->calib_version); 1219 return 0; 1220 } 1221 1222 IWL_ERR(trans, 1223 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n", 1224 data->nvm_version, trans->cfg->nvm_ver, 1225 data->calib_version, trans->cfg->nvm_calib_ver); 1226 return -EINVAL; 1227 } 1228 1229 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, 1230 const struct iwl_rf_cfg *cfg, 1231 const struct iwl_fw *fw, 1232 struct dentry *dbgfs_dir) 1233 { 1234 struct iwl_priv *priv; 1235 struct ieee80211_hw *hw; 1236 struct iwl_op_mode *op_mode; 1237 u16 num_mac; 1238 u32 ucode_flags; 1239 static const u8 no_reclaim_cmds[] = { 1240 REPLY_RX_PHY_CMD, 1241 REPLY_RX_MPDU_CMD, 1242 REPLY_COMPRESSED_BA, 1243 STATISTICS_NOTIFICATION, 1244 REPLY_TX, 1245 }; 1246 int i, err; 1247 1248 /************************ 1249 * 1. Allocating HW data 1250 ************************/ 1251 hw = iwl_alloc_all(); 1252 if (!hw) { 1253 pr_err("%s: Cannot allocate network device\n", 1254 trans->info.name); 1255 err = -ENOMEM; 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->trans->mac_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 err = -ENODEV; 1308 goto out_free_hw; 1309 } 1310 1311 /* 1312 * Populate the state variables that the transport layer needs 1313 * to know about. 1314 */ 1315 BUILD_BUG_ON(sizeof(no_reclaim_cmds) > 1316 sizeof(trans->conf.no_reclaim_cmds)); 1317 memcpy(trans->conf.no_reclaim_cmds, no_reclaim_cmds, 1318 sizeof(no_reclaim_cmds)); 1319 1320 switch (iwlwifi_mod_params.amsdu_size) { 1321 case IWL_AMSDU_DEF: 1322 case IWL_AMSDU_4K: 1323 trans->conf.rx_buf_size = IWL_AMSDU_4K; 1324 break; 1325 case IWL_AMSDU_8K: 1326 trans->conf.rx_buf_size = IWL_AMSDU_8K; 1327 break; 1328 case IWL_AMSDU_12K: 1329 default: 1330 trans->conf.rx_buf_size = IWL_AMSDU_4K; 1331 pr_err("Unsupported amsdu_size: %d\n", 1332 iwlwifi_mod_params.amsdu_size); 1333 } 1334 1335 trans->conf.command_groups = iwl_dvm_groups; 1336 trans->conf.command_groups_size = ARRAY_SIZE(iwl_dvm_groups); 1337 1338 trans->conf.cmd_fifo = IWLAGN_CMD_FIFO_NUM; 1339 trans->conf.cb_data_offs = offsetof(struct ieee80211_tx_info, 1340 driver_data[2]); 1341 1342 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < 1343 priv->trans->mac_cfg->base->num_of_queues); 1344 1345 ucode_flags = fw->ucode_capa.flags; 1346 1347 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { 1348 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; 1349 trans->conf.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; 1350 } else { 1351 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1352 trans->conf.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1353 } 1354 1355 trans->conf.rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 1356 trans->conf.rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 1357 1358 iwl_trans_op_mode_enter(priv->trans, op_mode); 1359 1360 /* At this point both hw and priv are allocated. */ 1361 1362 SET_IEEE80211_DEV(priv->hw, priv->trans->dev); 1363 1364 iwl_option_config(priv); 1365 1366 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); 1367 1368 /* bt channel inhibition enabled*/ 1369 priv->bt_ch_announce = true; 1370 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", 1371 (priv->bt_ch_announce) ? "On" : "Off"); 1372 1373 /* these spin locks will be used in apm_ops.init and EEPROM access 1374 * we should init now 1375 */ 1376 spin_lock_init(&priv->statistics.lock); 1377 1378 /*********************** 1379 * 2. Read REV register 1380 ***********************/ 1381 IWL_INFO(priv, "Detected %s, REV=0x%X\n", 1382 priv->trans->info.name, priv->trans->info.hw_rev); 1383 1384 err = iwl_trans_start_hw(priv->trans); 1385 if (err) 1386 goto out_leave_trans; 1387 1388 /* Read the EEPROM */ 1389 err = iwl_read_eeprom(priv->trans, &priv->eeprom_blob, 1390 &priv->eeprom_blob_size); 1391 if (err) { 1392 IWL_ERR(priv, "Unable to init EEPROM\n"); 1393 goto out_leave_trans; 1394 } 1395 1396 /* Reset chip to save power until we load uCode during "up". */ 1397 iwl_trans_stop_device(priv->trans); 1398 1399 priv->nvm_data = iwl_parse_eeprom_data(priv->trans, priv->cfg, 1400 priv->eeprom_blob, 1401 priv->eeprom_blob_size); 1402 if (!priv->nvm_data) { 1403 err = -ENOMEM; 1404 goto out_free_eeprom_blob; 1405 } 1406 1407 err = iwl_nvm_check_version(priv->nvm_data, priv->trans); 1408 if (err) 1409 goto out_free_eeprom; 1410 1411 err = iwl_eeprom_init_hw_params(priv); 1412 if (err) 1413 goto out_free_eeprom; 1414 1415 /* extract MAC Address */ 1416 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN); 1417 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); 1418 priv->hw->wiphy->addresses = priv->addresses; 1419 priv->hw->wiphy->n_addresses = 1; 1420 num_mac = priv->nvm_data->n_hw_addrs; 1421 if (num_mac > 1) { 1422 memcpy(priv->addresses[1].addr, priv->addresses[0].addr, 1423 ETH_ALEN); 1424 priv->addresses[1].addr[5]++; 1425 priv->hw->wiphy->n_addresses++; 1426 } 1427 1428 /************************ 1429 * 4. Setup HW constants 1430 ************************/ 1431 iwl_set_hw_params(priv); 1432 1433 if (!(priv->nvm_data->sku_cap_ipan_enable)) { 1434 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n"); 1435 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; 1436 /* 1437 * if not PAN, then don't support P2P -- might be a uCode 1438 * packaging bug or due to the eeprom check above 1439 */ 1440 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1441 trans->conf.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1442 } 1443 1444 /******************* 1445 * 5. Setup priv 1446 *******************/ 1447 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { 1448 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1449 if (i < IWLAGN_FIRST_AMPDU_QUEUE && 1450 i != IWL_DEFAULT_CMD_QUEUE_NUM && 1451 i != IWL_IPAN_CMD_QUEUE_NUM) 1452 priv->queue_to_mac80211[i] = i; 1453 atomic_set(&priv->queue_stop_count[i], 0); 1454 } 1455 1456 err = iwl_init_drv(priv); 1457 if (err) 1458 goto out_free_eeprom; 1459 1460 /* At this point both hw and priv are initialized. */ 1461 1462 /******************** 1463 * 6. Setup services 1464 ********************/ 1465 iwl_setup_deferred_work(priv); 1466 iwl_setup_rx_handlers(priv); 1467 1468 iwl_power_initialize(priv); 1469 iwl_tt_initialize(priv); 1470 1471 snprintf(priv->hw->wiphy->fw_version, 1472 sizeof(priv->hw->wiphy->fw_version), 1473 "%.31s", fw->fw_version); 1474 1475 priv->new_scan_threshold_behaviour = 1476 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); 1477 1478 priv->phy_calib_chain_noise_reset_cmd = 1479 fw->ucode_capa.standard_phy_calibration_size; 1480 priv->phy_calib_chain_noise_gain_cmd = 1481 fw->ucode_capa.standard_phy_calibration_size + 1; 1482 1483 /* initialize all valid contexts */ 1484 iwl_init_context(priv, ucode_flags); 1485 1486 /************************************************** 1487 * This is still part of probe() in a sense... 1488 * 1489 * 7. Setup and register with mac80211 and debugfs 1490 **************************************************/ 1491 err = iwlagn_mac_setup_register(priv, &fw->ucode_capa); 1492 if (err) 1493 goto out_destroy_workqueue; 1494 1495 iwl_dbgfs_register(priv, dbgfs_dir); 1496 1497 return op_mode; 1498 1499 out_destroy_workqueue: 1500 iwl_tt_exit(priv); 1501 iwl_cancel_deferred_work(priv); 1502 destroy_workqueue(priv->workqueue); 1503 priv->workqueue = NULL; 1504 iwl_uninit_drv(priv); 1505 out_free_eeprom_blob: 1506 kfree(priv->eeprom_blob); 1507 out_free_eeprom: 1508 kfree(priv->nvm_data); 1509 out_leave_trans: 1510 iwl_trans_op_mode_leave(priv->trans); 1511 out_free_hw: 1512 ieee80211_free_hw(priv->hw); 1513 out: 1514 return ERR_PTR(err); 1515 } 1516 1517 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) 1518 { 1519 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1520 1521 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); 1522 1523 iwlagn_mac_unregister(priv); 1524 1525 iwl_tt_exit(priv); 1526 1527 kfree(priv->eeprom_blob); 1528 kfree(priv->nvm_data); 1529 1530 /*netif_stop_queue(dev); */ 1531 1532 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes 1533 * priv->workqueue... so we can't take down the workqueue 1534 * until now... */ 1535 destroy_workqueue(priv->workqueue); 1536 priv->workqueue = NULL; 1537 1538 iwl_uninit_drv(priv); 1539 1540 dev_kfree_skb(priv->beacon_skb); 1541 1542 iwl_trans_op_mode_leave(priv->trans); 1543 ieee80211_free_hw(priv->hw); 1544 } 1545 1546 static const char * const desc_lookup_text[] = { 1547 "OK", 1548 "FAIL", 1549 "BAD_PARAM", 1550 "BAD_CHECKSUM", 1551 "NMI_INTERRUPT_WDG", 1552 "SYSASSERT", 1553 "FATAL_ERROR", 1554 "BAD_COMMAND", 1555 "HW_ERROR_TUNE_LOCK", 1556 "HW_ERROR_TEMPERATURE", 1557 "ILLEGAL_CHAN_FREQ", 1558 "VCC_NOT_STABLE", 1559 "FH_ERROR", 1560 "NMI_INTERRUPT_HOST", 1561 "NMI_INTERRUPT_ACTION_PT", 1562 "NMI_INTERRUPT_UNKNOWN", 1563 "UCODE_VERSION_MISMATCH", 1564 "HW_ERROR_ABS_LOCK", 1565 "HW_ERROR_CAL_LOCK_FAIL", 1566 "NMI_INTERRUPT_INST_ACTION_PT", 1567 "NMI_INTERRUPT_DATA_ACTION_PT", 1568 "NMI_TRM_HW_ER", 1569 "NMI_INTERRUPT_TRM", 1570 "NMI_INTERRUPT_BREAK_POINT", 1571 "DEBUG_0", 1572 "DEBUG_1", 1573 "DEBUG_2", 1574 "DEBUG_3", 1575 }; 1576 1577 static struct { char *name; u8 num; } advanced_lookup[] = { 1578 { "NMI_INTERRUPT_WDG", 0x34 }, 1579 { "SYSASSERT", 0x35 }, 1580 { "UCODE_VERSION_MISMATCH", 0x37 }, 1581 { "BAD_COMMAND", 0x38 }, 1582 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 1583 { "FATAL_ERROR", 0x3D }, 1584 { "NMI_TRM_HW_ERR", 0x46 }, 1585 { "NMI_INTERRUPT_TRM", 0x4C }, 1586 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 1587 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 1588 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 1589 { "NMI_INTERRUPT_HOST", 0x66 }, 1590 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 1591 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 1592 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 1593 { "ADVANCED_SYSASSERT", 0 }, 1594 }; 1595 1596 static const char *desc_lookup(u32 num) 1597 { 1598 int i; 1599 int max = ARRAY_SIZE(desc_lookup_text); 1600 1601 if (num < max) 1602 return desc_lookup_text[num]; 1603 1604 max = ARRAY_SIZE(advanced_lookup) - 1; 1605 for (i = 0; i < max; i++) { 1606 if (advanced_lookup[i].num == num) 1607 break; 1608 } 1609 return advanced_lookup[i].name; 1610 } 1611 1612 #define ERROR_START_OFFSET (1 * sizeof(u32)) 1613 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 1614 1615 static void iwl_dump_nic_error_log(struct iwl_priv *priv) 1616 { 1617 struct iwl_trans *trans = priv->trans; 1618 u32 base; 1619 struct iwl_error_event_table table; 1620 1621 base = priv->device_pointers.error_event_table; 1622 if (priv->cur_ucode == IWL_UCODE_INIT) { 1623 if (!base) 1624 base = priv->fw->init_errlog_ptr; 1625 } else { 1626 if (!base) 1627 base = priv->fw->inst_errlog_ptr; 1628 } 1629 1630 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1631 IWL_ERR(priv, 1632 "Not valid error log pointer 0x%08X for %s uCode\n", 1633 base, 1634 (priv->cur_ucode == IWL_UCODE_INIT) 1635 ? "Init" : "RT"); 1636 return; 1637 } 1638 1639 /*TODO: Update dbgfs with ISR error stats obtained below */ 1640 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 1641 1642 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 1643 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 1644 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 1645 priv->status, table.valid); 1646 } 1647 1648 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, 1649 desc_lookup(table.error_id)); 1650 IWL_ERR(priv, "0x%08X | uPc\n", table.pc); 1651 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); 1652 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); 1653 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); 1654 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); 1655 IWL_ERR(priv, "0x%08X | data1\n", table.data1); 1656 IWL_ERR(priv, "0x%08X | data2\n", table.data2); 1657 IWL_ERR(priv, "0x%08X | line\n", table.line); 1658 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); 1659 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); 1660 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); 1661 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); 1662 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); 1663 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); 1664 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); 1665 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); 1666 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); 1667 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); 1668 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); 1669 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); 1670 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); 1671 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); 1672 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); 1673 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); 1674 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); 1675 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); 1676 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); 1677 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 1678 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 1679 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 1680 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); 1681 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); 1682 } 1683 1684 #define EVENT_START_OFFSET (4 * sizeof(u32)) 1685 1686 /* 1687 * iwl_print_event_log - Dump error event log to syslog 1688 */ 1689 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, 1690 u32 num_events, u32 mode, 1691 int pos, char **buf, size_t bufsz) 1692 { 1693 u32 i; 1694 u32 base; /* SRAM byte address of event log header */ 1695 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ 1696 u32 ptr; /* SRAM byte address of log data */ 1697 u32 ev, time, data; /* event log data */ 1698 1699 struct iwl_trans *trans = priv->trans; 1700 1701 if (num_events == 0) 1702 return pos; 1703 1704 base = priv->device_pointers.log_event_table; 1705 if (priv->cur_ucode == IWL_UCODE_INIT) { 1706 if (!base) 1707 base = priv->fw->init_evtlog_ptr; 1708 } else { 1709 if (!base) 1710 base = priv->fw->inst_evtlog_ptr; 1711 } 1712 1713 if (mode == 0) 1714 event_size = 2 * sizeof(u32); 1715 else 1716 event_size = 3 * sizeof(u32); 1717 1718 ptr = base + EVENT_START_OFFSET + (start_idx * event_size); 1719 1720 /* Make sure device is powered up for SRAM reads */ 1721 if (!iwl_trans_grab_nic_access(trans)) 1722 return pos; 1723 1724 /* Set starting address; reads will auto-increment */ 1725 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); 1726 1727 /* "time" is actually "data" for mode 0 (no timestamp). 1728 * place event id # at far right for easier visual parsing. */ 1729 for (i = 0; i < num_events; i++) { 1730 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1731 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1732 if (mode == 0) { 1733 /* data, ev */ 1734 if (bufsz) { 1735 pos += scnprintf(*buf + pos, bufsz - pos, 1736 "EVT_LOG:0x%08x:%04u\n", 1737 time, ev); 1738 } else { 1739 trace_iwlwifi_dev_ucode_event(trans->dev, 0, 1740 time, ev); 1741 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", 1742 time, ev); 1743 } 1744 } else { 1745 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1746 if (bufsz) { 1747 pos += scnprintf(*buf + pos, bufsz - pos, 1748 "EVT_LOGT:%010u:0x%08x:%04u\n", 1749 time, data, ev); 1750 } else { 1751 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", 1752 time, data, ev); 1753 trace_iwlwifi_dev_ucode_event(trans->dev, time, 1754 data, ev); 1755 } 1756 } 1757 } 1758 1759 /* Allow device to power down */ 1760 iwl_trans_release_nic_access(trans); 1761 return pos; 1762 } 1763 1764 /* 1765 * iwl_print_last_event_logs - Dump the newest # of event log to syslog 1766 */ 1767 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, 1768 u32 num_wraps, u32 next_entry, 1769 u32 size, u32 mode, 1770 int pos, char **buf, size_t bufsz) 1771 { 1772 /* 1773 * display the newest DEFAULT_LOG_ENTRIES entries 1774 * i.e the entries just before the next ont that uCode would fill. 1775 */ 1776 if (num_wraps) { 1777 if (next_entry < size) { 1778 pos = iwl_print_event_log(priv, 1779 capacity - (size - next_entry), 1780 size - next_entry, mode, 1781 pos, buf, bufsz); 1782 pos = iwl_print_event_log(priv, 0, 1783 next_entry, mode, 1784 pos, buf, bufsz); 1785 } else 1786 pos = iwl_print_event_log(priv, next_entry - size, 1787 size, mode, pos, buf, bufsz); 1788 } else { 1789 if (next_entry < size) { 1790 pos = iwl_print_event_log(priv, 0, next_entry, 1791 mode, pos, buf, bufsz); 1792 } else { 1793 pos = iwl_print_event_log(priv, next_entry - size, 1794 size, mode, pos, buf, bufsz); 1795 } 1796 } 1797 return pos; 1798 } 1799 1800 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) 1801 1802 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, 1803 char **buf) 1804 { 1805 u32 base; /* SRAM byte address of event log header */ 1806 u32 capacity; /* event log capacity in # entries */ 1807 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 1808 u32 num_wraps; /* # times uCode wrapped to top of log */ 1809 u32 next_entry; /* index of next entry to be written by uCode */ 1810 u32 size; /* # entries that we'll print */ 1811 u32 logsize; 1812 int pos = 0; 1813 size_t bufsz = 0; 1814 struct iwl_trans *trans = priv->trans; 1815 1816 base = priv->device_pointers.log_event_table; 1817 if (priv->cur_ucode == IWL_UCODE_INIT) { 1818 logsize = priv->fw->init_evtlog_size; 1819 if (!base) 1820 base = priv->fw->init_evtlog_ptr; 1821 } else { 1822 logsize = priv->fw->inst_evtlog_size; 1823 if (!base) 1824 base = priv->fw->inst_evtlog_ptr; 1825 } 1826 1827 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1828 IWL_ERR(priv, 1829 "Invalid event log pointer 0x%08X for %s uCode\n", 1830 base, 1831 (priv->cur_ucode == IWL_UCODE_INIT) 1832 ? "Init" : "RT"); 1833 return -EINVAL; 1834 } 1835 1836 /* event log header */ 1837 capacity = iwl_trans_read_mem32(trans, base); 1838 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32))); 1839 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32))); 1840 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32))); 1841 1842 if (capacity > logsize) { 1843 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " 1844 "entries\n", capacity, logsize); 1845 capacity = logsize; 1846 } 1847 1848 if (next_entry > logsize) { 1849 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", 1850 next_entry, logsize); 1851 next_entry = logsize; 1852 } 1853 1854 size = num_wraps ? capacity : next_entry; 1855 1856 /* bail out if nothing in log */ 1857 if (size == 0) { 1858 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); 1859 return pos; 1860 } 1861 1862 if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log) 1863 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) 1864 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; 1865 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", 1866 size); 1867 1868 #ifdef CONFIG_IWLWIFI_DEBUG 1869 if (buf) { 1870 if (full_log) 1871 bufsz = capacity * 48; 1872 else 1873 bufsz = size * 48; 1874 *buf = kmalloc(bufsz, GFP_KERNEL); 1875 if (!*buf) 1876 return -ENOMEM; 1877 } 1878 if (iwl_have_debug_level(IWL_DL_FW) || full_log) { 1879 /* 1880 * if uCode has wrapped back to top of log, 1881 * start at the oldest entry, 1882 * i.e the next one that uCode would fill. 1883 */ 1884 if (num_wraps) 1885 pos = iwl_print_event_log(priv, next_entry, 1886 capacity - next_entry, mode, 1887 pos, buf, bufsz); 1888 /* (then/else) start at top of log */ 1889 pos = iwl_print_event_log(priv, 0, 1890 next_entry, mode, pos, buf, bufsz); 1891 } else 1892 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1893 next_entry, size, mode, 1894 pos, buf, bufsz); 1895 #else 1896 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1897 next_entry, size, mode, 1898 pos, buf, bufsz); 1899 #endif 1900 return pos; 1901 } 1902 1903 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) 1904 { 1905 unsigned int reload_msec; 1906 unsigned long reload_jiffies; 1907 1908 /* uCode is no longer loaded. */ 1909 priv->ucode_loaded = false; 1910 1911 /* Keep the restart process from trying to send host 1912 * commands by clearing the ready bit */ 1913 clear_bit(STATUS_READY, &priv->status); 1914 1915 if (!ondemand) { 1916 /* 1917 * If firmware keep reloading, then it indicate something 1918 * serious wrong and firmware having problem to recover 1919 * from it. Instead of keep trying which will fill the syslog 1920 * and hang the system, let's just stop it 1921 */ 1922 reload_jiffies = jiffies; 1923 reload_msec = jiffies_to_msecs((long) reload_jiffies - 1924 (long) priv->reload_jiffies); 1925 priv->reload_jiffies = reload_jiffies; 1926 if (reload_msec <= IWL_MIN_RELOAD_DURATION) { 1927 priv->reload_count++; 1928 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { 1929 IWL_ERR(priv, "BUG_ON, Stop restarting\n"); 1930 return; 1931 } 1932 } else 1933 priv->reload_count = 0; 1934 } 1935 1936 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { 1937 if (iwlwifi_mod_params.fw_restart) { 1938 IWL_DEBUG_FW(priv, 1939 "Restarting adapter due to uCode error.\n"); 1940 queue_work(priv->workqueue, &priv->restart); 1941 } else 1942 IWL_DEBUG_FW(priv, 1943 "Detected FW error, but not restarting\n"); 1944 } 1945 } 1946 1947 static void iwl_nic_error(struct iwl_op_mode *op_mode, 1948 enum iwl_fw_error_type type) 1949 { 1950 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1951 1952 /* Set the FW error flag -- cleared on iwl_down */ 1953 set_bit(STATUS_FW_ERROR, &priv->status); 1954 1955 iwl_abort_notification_waits(&priv->notif_wait); 1956 1957 if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL && iwl_check_for_ct_kill(priv)) 1958 return; 1959 1960 IWL_ERR(priv, "Loaded firmware version: %s\n", 1961 priv->fw->fw_version); 1962 1963 if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL) { 1964 IWL_ERR(priv, "Command queue full!\n"); 1965 } else { 1966 iwl_dump_nic_error_log(priv); 1967 iwl_dump_nic_event_log(priv, false, NULL); 1968 } 1969 1970 if (iwl_have_debug_level(IWL_DL_FW)) 1971 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); 1972 } 1973 1974 static bool iwlagn_sw_reset(struct iwl_op_mode *op_mode, 1975 enum iwl_fw_error_type type) 1976 { 1977 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1978 1979 if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL && iwl_check_for_ct_kill(priv)) 1980 return false; 1981 1982 iwlagn_fw_error(priv, false); 1983 return true; 1984 } 1985 1986 #define EEPROM_RF_CONFIG_TYPE_MAX 0x3 1987 1988 static void iwl_nic_config(struct iwl_op_mode *op_mode) 1989 { 1990 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1991 1992 /* SKU Control */ 1993 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1994 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP_DASH, 1995 CSR_HW_REV_STEP_DASH(priv->trans->info.hw_rev)); 1996 1997 /* write radio config values to register */ 1998 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) { 1999 u32 reg_val = 2000 priv->nvm_data->radio_cfg_type << 2001 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | 2002 priv->nvm_data->radio_cfg_step << 2003 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | 2004 priv->nvm_data->radio_cfg_dash << 2005 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 2006 2007 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 2008 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 2009 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 2010 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, 2011 reg_val); 2012 2013 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", 2014 priv->nvm_data->radio_cfg_type, 2015 priv->nvm_data->radio_cfg_step, 2016 priv->nvm_data->radio_cfg_dash); 2017 } else { 2018 WARN_ON(1); 2019 } 2020 2021 /* set CSR_HW_CONFIG_REG for uCode use */ 2022 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, 2023 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 2024 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); 2025 2026 /* W/A : NIC is stuck in a reset state after Early PCIe power off 2027 * (PCIe power is lost before PERST# is asserted), 2028 * causing ME FW to lose ownership and not being able to obtain it back. 2029 */ 2030 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, 2031 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 2032 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 2033 2034 if (priv->lib->nic_config) 2035 priv->lib->nic_config(priv); 2036 } 2037 2038 static void iwl_wimax_active(struct iwl_op_mode *op_mode) 2039 { 2040 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2041 2042 clear_bit(STATUS_READY, &priv->status); 2043 IWL_ERR(priv, "RF is used by WiMAX\n"); 2044 } 2045 2046 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 2047 { 2048 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2049 int mq = priv->queue_to_mac80211[queue]; 2050 2051 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2052 return; 2053 2054 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) { 2055 IWL_DEBUG_TX_QUEUES(priv, 2056 "queue %d (mac80211 %d) already stopped\n", 2057 queue, mq); 2058 return; 2059 } 2060 2061 set_bit(mq, &priv->transport_queue_stop); 2062 ieee80211_stop_queue(priv->hw, mq); 2063 } 2064 2065 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 2066 { 2067 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2068 int mq = priv->queue_to_mac80211[queue]; 2069 2070 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2071 return; 2072 2073 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { 2074 IWL_DEBUG_TX_QUEUES(priv, 2075 "queue %d (mac80211 %d) already awake\n", 2076 queue, mq); 2077 return; 2078 } 2079 2080 clear_bit(mq, &priv->transport_queue_stop); 2081 2082 if (!priv->passive_no_rx) 2083 ieee80211_wake_queue(priv->hw, mq); 2084 } 2085 2086 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) 2087 { 2088 int mq; 2089 2090 if (!priv->passive_no_rx) 2091 return; 2092 2093 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { 2094 if (!test_bit(mq, &priv->transport_queue_stop)) { 2095 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq); 2096 ieee80211_wake_queue(priv->hw, mq); 2097 } else { 2098 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq); 2099 } 2100 } 2101 2102 priv->passive_no_rx = false; 2103 } 2104 2105 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 2106 { 2107 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2108 struct ieee80211_tx_info *info; 2109 2110 info = IEEE80211_SKB_CB(skb); 2111 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); 2112 ieee80211_free_txskb(priv->hw, skb); 2113 } 2114 2115 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 2116 { 2117 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2118 2119 if (state) 2120 set_bit(STATUS_RF_KILL_HW, &priv->status); 2121 else 2122 clear_bit(STATUS_RF_KILL_HW, &priv->status); 2123 2124 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); 2125 2126 return false; 2127 } 2128 2129 static const struct iwl_op_mode_ops iwl_dvm_ops = { 2130 .start = iwl_op_mode_dvm_start, 2131 .stop = iwl_op_mode_dvm_stop, 2132 .rx = iwl_rx_dispatch, 2133 .queue_full = iwl_stop_sw_queue, 2134 .queue_not_full = iwl_wake_sw_queue, 2135 .hw_rf_kill = iwl_set_hw_rfkill_state, 2136 .free_skb = iwl_free_skb, 2137 .nic_error = iwl_nic_error, 2138 .sw_reset = iwlagn_sw_reset, 2139 .nic_config = iwl_nic_config, 2140 .wimax_active = iwl_wimax_active, 2141 }; 2142 2143 /***************************************************************************** 2144 * 2145 * driver and module entry point 2146 * 2147 *****************************************************************************/ 2148 static int __init iwl_init(void) 2149 { 2150 2151 int ret; 2152 2153 ret = iwlagn_rate_control_register(); 2154 if (ret) { 2155 pr_err("Unable to register rate control algorithm: %d\n", ret); 2156 return ret; 2157 } 2158 2159 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); 2160 if (ret) { 2161 pr_err("Unable to register op_mode: %d\n", ret); 2162 iwlagn_rate_control_unregister(); 2163 } 2164 2165 return ret; 2166 } 2167 module_init(iwl_init); 2168 2169 static void __exit iwl_exit(void) 2170 { 2171 iwl_opmode_deregister("iwldvm"); 2172 iwlagn_rate_control_unregister(); 2173 } 2174 module_exit(iwl_exit); 2175