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