1 // SPDX-License-Identifier: GPL-2.0-only 2 /****************************************************************************** 3 * 4 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. 5 * Copyright(c) 2015 Intel Deutschland GmbH 6 * Copyright (C) 2018 Intel Corporation 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 * Contact Information: 12 * Intel Linux Wireless <linuxwifi@intel.com> 13 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 14 * 15 *****************************************************************************/ 16 17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 18 19 #include <linux/kernel.h> 20 #include <linux/module.h> 21 #include <linux/init.h> 22 #include <linux/slab.h> 23 #include <linux/delay.h> 24 #include <linux/sched.h> 25 #include <linux/skbuff.h> 26 #include <linux/netdevice.h> 27 #include <linux/etherdevice.h> 28 #include <linux/if_arp.h> 29 30 #include <net/mac80211.h> 31 32 #include <asm/div64.h> 33 34 #include "iwl-eeprom-read.h" 35 #include "iwl-eeprom-parse.h" 36 #include "iwl-io.h" 37 #include "iwl-trans.h" 38 #include "iwl-op-mode.h" 39 #include "iwl-drv.h" 40 #include "iwl-modparams.h" 41 #include "iwl-prph.h" 42 43 #include "dev.h" 44 #include "calib.h" 45 #include "agn.h" 46 47 48 /****************************************************************************** 49 * 50 * module boiler plate 51 * 52 ******************************************************************************/ 53 54 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" 55 MODULE_DESCRIPTION(DRV_DESCRIPTION); 56 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 57 MODULE_LICENSE("GPL"); 58 59 /* Please keep this array *SORTED* by hex value. 60 * Access is done through binary search. 61 * A warning will be triggered on violation. 62 */ 63 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = { 64 HCMD_NAME(REPLY_ALIVE), 65 HCMD_NAME(REPLY_ERROR), 66 HCMD_NAME(REPLY_ECHO), 67 HCMD_NAME(REPLY_RXON), 68 HCMD_NAME(REPLY_RXON_ASSOC), 69 HCMD_NAME(REPLY_QOS_PARAM), 70 HCMD_NAME(REPLY_RXON_TIMING), 71 HCMD_NAME(REPLY_ADD_STA), 72 HCMD_NAME(REPLY_REMOVE_STA), 73 HCMD_NAME(REPLY_REMOVE_ALL_STA), 74 HCMD_NAME(REPLY_TX), 75 HCMD_NAME(REPLY_TXFIFO_FLUSH), 76 HCMD_NAME(REPLY_WEPKEY), 77 HCMD_NAME(REPLY_LEDS_CMD), 78 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD), 79 HCMD_NAME(COEX_PRIORITY_TABLE_CMD), 80 HCMD_NAME(COEX_MEDIUM_NOTIFICATION), 81 HCMD_NAME(COEX_EVENT_CMD), 82 HCMD_NAME(TEMPERATURE_NOTIFICATION), 83 HCMD_NAME(CALIBRATION_CFG_CMD), 84 HCMD_NAME(CALIBRATION_RES_NOTIFICATION), 85 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION), 86 HCMD_NAME(REPLY_QUIET_CMD), 87 HCMD_NAME(REPLY_CHANNEL_SWITCH), 88 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION), 89 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD), 90 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION), 91 HCMD_NAME(POWER_TABLE_CMD), 92 HCMD_NAME(PM_SLEEP_NOTIFICATION), 93 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC), 94 HCMD_NAME(REPLY_SCAN_CMD), 95 HCMD_NAME(REPLY_SCAN_ABORT_CMD), 96 HCMD_NAME(SCAN_START_NOTIFICATION), 97 HCMD_NAME(SCAN_RESULTS_NOTIFICATION), 98 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION), 99 HCMD_NAME(BEACON_NOTIFICATION), 100 HCMD_NAME(REPLY_TX_BEACON), 101 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION), 102 HCMD_NAME(REPLY_TX_POWER_DBM_CMD), 103 HCMD_NAME(QUIET_NOTIFICATION), 104 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD), 105 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1), 106 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 107 HCMD_NAME(MEASURE_ABORT_NOTIFICATION), 108 HCMD_NAME(REPLY_BT_CONFIG), 109 HCMD_NAME(REPLY_STATISTICS_CMD), 110 HCMD_NAME(STATISTICS_NOTIFICATION), 111 HCMD_NAME(REPLY_CARD_STATE_CMD), 112 HCMD_NAME(CARD_STATE_NOTIFICATION), 113 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 114 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD), 115 HCMD_NAME(SENSITIVITY_CMD), 116 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD), 117 HCMD_NAME(REPLY_WIPAN_PARAMS), 118 HCMD_NAME(REPLY_WIPAN_RXON), 119 HCMD_NAME(REPLY_WIPAN_RXON_TIMING), 120 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC), 121 HCMD_NAME(REPLY_WIPAN_QOS_PARAM), 122 HCMD_NAME(REPLY_WIPAN_WEPKEY), 123 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH), 124 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION), 125 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE), 126 HCMD_NAME(REPLY_RX_PHY_CMD), 127 HCMD_NAME(REPLY_RX_MPDU_CMD), 128 HCMD_NAME(REPLY_RX), 129 HCMD_NAME(REPLY_COMPRESSED_BA), 130 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE), 131 HCMD_NAME(REPLY_BT_COEX_PROT_ENV), 132 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF), 133 HCMD_NAME(REPLY_D3_CONFIG), 134 HCMD_NAME(REPLY_WOWLAN_PATTERNS), 135 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER), 136 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS), 137 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS), 138 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL), 139 HCMD_NAME(REPLY_WOWLAN_GET_STATUS), 140 }; 141 142 static const struct iwl_hcmd_arr iwl_dvm_groups[] = { 143 [0x0] = HCMD_ARR(iwl_dvm_cmd_names), 144 }; 145 146 static const struct iwl_op_mode_ops iwl_dvm_ops; 147 148 void iwl_update_chain_flags(struct iwl_priv *priv) 149 { 150 struct iwl_rxon_context *ctx; 151 152 for_each_context(priv, ctx) { 153 iwlagn_set_rxon_chain(priv, ctx); 154 if (ctx->active.rx_chain != ctx->staging.rx_chain) 155 iwlagn_commit_rxon(priv, ctx); 156 } 157 } 158 159 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ 160 static void iwl_set_beacon_tim(struct iwl_priv *priv, 161 struct iwl_tx_beacon_cmd *tx_beacon_cmd, 162 u8 *beacon, u32 frame_size) 163 { 164 u16 tim_idx; 165 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 166 167 /* 168 * The index is relative to frame start but we start looking at the 169 * variable-length part of the beacon. 170 */ 171 tim_idx = mgmt->u.beacon.variable - beacon; 172 173 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 174 while ((tim_idx < (frame_size - 2)) && 175 (beacon[tim_idx] != WLAN_EID_TIM)) 176 tim_idx += beacon[tim_idx+1] + 2; 177 178 /* If TIM field was found, set variables */ 179 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 180 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); 181 tx_beacon_cmd->tim_size = beacon[tim_idx+1]; 182 } else 183 IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); 184 } 185 186 int iwlagn_send_beacon_cmd(struct iwl_priv *priv) 187 { 188 struct iwl_tx_beacon_cmd *tx_beacon_cmd; 189 struct iwl_host_cmd cmd = { 190 .id = REPLY_TX_BEACON, 191 }; 192 struct ieee80211_tx_info *info; 193 u32 frame_size; 194 u32 rate_flags; 195 u32 rate; 196 197 /* 198 * We have to set up the TX command, the TX Beacon command, and the 199 * beacon contents. 200 */ 201 202 lockdep_assert_held(&priv->mutex); 203 204 if (!priv->beacon_ctx) { 205 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); 206 return 0; 207 } 208 209 if (WARN_ON(!priv->beacon_skb)) 210 return -EINVAL; 211 212 /* Allocate beacon command */ 213 if (!priv->beacon_cmd) 214 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); 215 tx_beacon_cmd = priv->beacon_cmd; 216 if (!tx_beacon_cmd) 217 return -ENOMEM; 218 219 frame_size = priv->beacon_skb->len; 220 221 /* Set up TX command fields */ 222 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); 223 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; 224 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; 225 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | 226 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; 227 228 /* Set up TX beacon command fields */ 229 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, 230 frame_size); 231 232 /* Set up packet rate and flags */ 233 info = IEEE80211_SKB_CB(priv->beacon_skb); 234 235 /* 236 * Let's set up the rate at least somewhat correctly; 237 * it will currently not actually be used by the uCode, 238 * it uses the broadcast station's rate instead. 239 */ 240 if (info->control.rates[0].idx < 0 || 241 info->control.rates[0].flags & IEEE80211_TX_RC_MCS) 242 rate = 0; 243 else 244 rate = info->control.rates[0].idx; 245 246 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, 247 priv->nvm_data->valid_tx_ant); 248 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); 249 250 /* In mac80211, rates for 5 GHz start at 0 */ 251 if (info->band == NL80211_BAND_5GHZ) 252 rate += IWL_FIRST_OFDM_RATE; 253 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) 254 rate_flags |= RATE_MCS_CCK_MSK; 255 256 tx_beacon_cmd->tx.rate_n_flags = 257 iwl_hw_set_rate_n_flags(rate, rate_flags); 258 259 /* Submit command */ 260 cmd.len[0] = sizeof(*tx_beacon_cmd); 261 cmd.data[0] = tx_beacon_cmd; 262 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 263 cmd.len[1] = frame_size; 264 cmd.data[1] = priv->beacon_skb->data; 265 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; 266 267 return iwl_dvm_send_cmd(priv, &cmd); 268 } 269 270 static void iwl_bg_beacon_update(struct work_struct *work) 271 { 272 struct iwl_priv *priv = 273 container_of(work, struct iwl_priv, beacon_update); 274 struct sk_buff *beacon; 275 276 mutex_lock(&priv->mutex); 277 if (!priv->beacon_ctx) { 278 IWL_ERR(priv, "updating beacon w/o beacon context!\n"); 279 goto out; 280 } 281 282 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { 283 /* 284 * The ucode will send beacon notifications even in 285 * IBSS mode, but we don't want to process them. But 286 * we need to defer the type check to here due to 287 * requiring locking around the beacon_ctx access. 288 */ 289 goto out; 290 } 291 292 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ 293 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); 294 if (!beacon) { 295 IWL_ERR(priv, "update beacon failed -- keeping old\n"); 296 goto out; 297 } 298 299 /* new beacon skb is allocated every time; dispose previous.*/ 300 dev_kfree_skb(priv->beacon_skb); 301 302 priv->beacon_skb = beacon; 303 304 iwlagn_send_beacon_cmd(priv); 305 out: 306 mutex_unlock(&priv->mutex); 307 } 308 309 static void iwl_bg_bt_runtime_config(struct work_struct *work) 310 { 311 struct iwl_priv *priv = 312 container_of(work, struct iwl_priv, bt_runtime_config); 313 314 mutex_lock(&priv->mutex); 315 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 316 goto out; 317 318 /* dont send host command if rf-kill is on */ 319 if (!iwl_is_ready_rf(priv)) 320 goto out; 321 322 iwlagn_send_advance_bt_config(priv); 323 out: 324 mutex_unlock(&priv->mutex); 325 } 326 327 static void iwl_bg_bt_full_concurrency(struct work_struct *work) 328 { 329 struct iwl_priv *priv = 330 container_of(work, struct iwl_priv, bt_full_concurrency); 331 struct iwl_rxon_context *ctx; 332 333 mutex_lock(&priv->mutex); 334 335 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 336 goto out; 337 338 /* dont send host command if rf-kill is on */ 339 if (!iwl_is_ready_rf(priv)) 340 goto out; 341 342 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", 343 priv->bt_full_concurrent ? 344 "full concurrency" : "3-wire"); 345 346 /* 347 * LQ & RXON updated cmds must be sent before BT Config cmd 348 * to avoid 3-wire collisions 349 */ 350 for_each_context(priv, ctx) { 351 iwlagn_set_rxon_chain(priv, ctx); 352 iwlagn_commit_rxon(priv, ctx); 353 } 354 355 iwlagn_send_advance_bt_config(priv); 356 out: 357 mutex_unlock(&priv->mutex); 358 } 359 360 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) 361 { 362 struct iwl_statistics_cmd statistics_cmd = { 363 .configuration_flags = 364 clear ? IWL_STATS_CONF_CLEAR_STATS : 0, 365 }; 366 367 if (flags & CMD_ASYNC) 368 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 369 CMD_ASYNC, 370 sizeof(struct iwl_statistics_cmd), 371 &statistics_cmd); 372 else 373 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0, 374 sizeof(struct iwl_statistics_cmd), 375 &statistics_cmd); 376 } 377 378 /** 379 * iwl_bg_statistics_periodic - Timer callback to queue statistics 380 * 381 * This callback is provided in order to send a statistics request. 382 * 383 * This timer function is continually reset to execute within 384 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION 385 * was received. We need to ensure we receive the statistics in order 386 * to update the temperature used for calibrating the TXPOWER. 387 */ 388 static void iwl_bg_statistics_periodic(struct timer_list *t) 389 { 390 struct iwl_priv *priv = from_timer(priv, t, statistics_periodic); 391 392 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 393 return; 394 395 /* dont send host command if rf-kill is on */ 396 if (!iwl_is_ready_rf(priv)) 397 return; 398 399 iwl_send_statistics_request(priv, CMD_ASYNC, false); 400 } 401 402 403 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, 404 u32 start_idx, u32 num_events, 405 u32 capacity, u32 mode) 406 { 407 u32 i; 408 u32 ptr; /* SRAM byte address of log data */ 409 u32 ev, time, data; /* event log data */ 410 unsigned long reg_flags; 411 412 if (mode == 0) 413 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); 414 else 415 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); 416 417 /* Make sure device is powered up for SRAM reads */ 418 if (!iwl_trans_grab_nic_access(priv->trans, ®_flags)) 419 return; 420 421 /* Set starting address; reads will auto-increment */ 422 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); 423 424 /* 425 * Refuse to read more than would have fit into the log from 426 * the current start_idx. This used to happen due to the race 427 * described below, but now WARN because the code below should 428 * prevent it from happening here. 429 */ 430 if (WARN_ON(num_events > capacity - start_idx)) 431 num_events = capacity - start_idx; 432 433 /* 434 * "time" is actually "data" for mode 0 (no timestamp). 435 * place event id # at far right for easier visual parsing. 436 */ 437 for (i = 0; i < num_events; i++) { 438 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 439 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 440 if (mode == 0) { 441 trace_iwlwifi_dev_ucode_cont_event( 442 priv->trans->dev, 0, time, ev); 443 } else { 444 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 445 trace_iwlwifi_dev_ucode_cont_event( 446 priv->trans->dev, time, data, ev); 447 } 448 } 449 /* Allow device to power down */ 450 iwl_trans_release_nic_access(priv->trans, ®_flags); 451 } 452 453 static void iwl_continuous_event_trace(struct iwl_priv *priv) 454 { 455 u32 capacity; /* event log capacity in # entries */ 456 struct { 457 u32 capacity; 458 u32 mode; 459 u32 wrap_counter; 460 u32 write_counter; 461 } __packed read; 462 u32 base; /* SRAM byte address of event log header */ 463 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 464 u32 num_wraps; /* # times uCode wrapped to top of log */ 465 u32 next_entry; /* index of next entry to be written by uCode */ 466 467 base = priv->device_pointers.log_event_table; 468 if (iwlagn_hw_valid_rtc_data_addr(base)) { 469 iwl_trans_read_mem_bytes(priv->trans, base, 470 &read, sizeof(read)); 471 capacity = read.capacity; 472 mode = read.mode; 473 num_wraps = read.wrap_counter; 474 next_entry = read.write_counter; 475 } else 476 return; 477 478 /* 479 * Unfortunately, the uCode doesn't use temporary variables. 480 * Therefore, it can happen that we read next_entry == capacity, 481 * which really means next_entry == 0. 482 */ 483 if (unlikely(next_entry == capacity)) 484 next_entry = 0; 485 /* 486 * Additionally, the uCode increases the write pointer before 487 * the wraps counter, so if the write pointer is smaller than 488 * the old write pointer (wrap occurred) but we read that no 489 * wrap occurred, we actually read between the next_entry and 490 * num_wraps update (this does happen in practice!!) -- take 491 * that into account by increasing num_wraps. 492 */ 493 if (unlikely(next_entry < priv->event_log.next_entry && 494 num_wraps == priv->event_log.num_wraps)) 495 num_wraps++; 496 497 if (num_wraps == priv->event_log.num_wraps) { 498 iwl_print_cont_event_trace( 499 priv, base, priv->event_log.next_entry, 500 next_entry - priv->event_log.next_entry, 501 capacity, mode); 502 503 priv->event_log.non_wraps_count++; 504 } else { 505 if (num_wraps - priv->event_log.num_wraps > 1) 506 priv->event_log.wraps_more_count++; 507 else 508 priv->event_log.wraps_once_count++; 509 510 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, 511 num_wraps - priv->event_log.num_wraps, 512 next_entry, priv->event_log.next_entry); 513 514 if (next_entry < priv->event_log.next_entry) { 515 iwl_print_cont_event_trace( 516 priv, base, priv->event_log.next_entry, 517 capacity - priv->event_log.next_entry, 518 capacity, mode); 519 520 iwl_print_cont_event_trace( 521 priv, base, 0, next_entry, capacity, mode); 522 } else { 523 iwl_print_cont_event_trace( 524 priv, base, next_entry, 525 capacity - next_entry, 526 capacity, mode); 527 528 iwl_print_cont_event_trace( 529 priv, base, 0, next_entry, capacity, mode); 530 } 531 } 532 533 priv->event_log.num_wraps = num_wraps; 534 priv->event_log.next_entry = next_entry; 535 } 536 537 /** 538 * iwl_bg_ucode_trace - Timer callback to log ucode event 539 * 540 * The timer is continually set to execute every 541 * UCODE_TRACE_PERIOD milliseconds after the last timer expired 542 * this function is to perform continuous uCode event logging operation 543 * if enabled 544 */ 545 static void iwl_bg_ucode_trace(struct timer_list *t) 546 { 547 struct iwl_priv *priv = from_timer(priv, t, ucode_trace); 548 549 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 550 return; 551 552 if (priv->event_log.ucode_trace) { 553 iwl_continuous_event_trace(priv); 554 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ 555 mod_timer(&priv->ucode_trace, 556 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); 557 } 558 } 559 560 static void iwl_bg_tx_flush(struct work_struct *work) 561 { 562 struct iwl_priv *priv = 563 container_of(work, struct iwl_priv, tx_flush); 564 565 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 566 return; 567 568 /* do nothing if rf-kill is on */ 569 if (!iwl_is_ready_rf(priv)) 570 return; 571 572 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); 573 iwlagn_dev_txfifo_flush(priv); 574 } 575 576 /* 577 * queue/FIFO/AC mapping definitions 578 */ 579 580 static const u8 iwlagn_bss_ac_to_fifo[] = { 581 IWL_TX_FIFO_VO, 582 IWL_TX_FIFO_VI, 583 IWL_TX_FIFO_BE, 584 IWL_TX_FIFO_BK, 585 }; 586 587 static const u8 iwlagn_bss_ac_to_queue[] = { 588 0, 1, 2, 3, 589 }; 590 591 static const u8 iwlagn_pan_ac_to_fifo[] = { 592 IWL_TX_FIFO_VO_IPAN, 593 IWL_TX_FIFO_VI_IPAN, 594 IWL_TX_FIFO_BE_IPAN, 595 IWL_TX_FIFO_BK_IPAN, 596 }; 597 598 static const u8 iwlagn_pan_ac_to_queue[] = { 599 7, 6, 5, 4, 600 }; 601 602 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) 603 { 604 int i; 605 606 /* 607 * The default context is always valid, 608 * the PAN context depends on uCode. 609 */ 610 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); 611 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) 612 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 613 614 for (i = 0; i < NUM_IWL_RXON_CTX; i++) 615 priv->contexts[i].ctxid = i; 616 617 priv->contexts[IWL_RXON_CTX_BSS].always_active = true; 618 priv->contexts[IWL_RXON_CTX_BSS].is_active = true; 619 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; 620 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; 621 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; 622 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; 623 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; 624 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; 625 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 626 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = 627 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR); 628 priv->contexts[IWL_RXON_CTX_BSS].interface_modes = 629 BIT(NL80211_IFTYPE_STATION); 630 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; 631 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; 632 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; 633 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; 634 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, 635 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); 636 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, 637 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); 638 639 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; 640 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = 641 REPLY_WIPAN_RXON_TIMING; 642 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = 643 REPLY_WIPAN_RXON_ASSOC; 644 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; 645 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; 646 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; 647 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; 648 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; 649 priv->contexts[IWL_RXON_CTX_PAN].interface_modes = 650 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); 651 652 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; 653 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; 654 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; 655 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, 656 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); 657 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, 658 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); 659 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; 660 661 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); 662 } 663 664 static void iwl_rf_kill_ct_config(struct iwl_priv *priv) 665 { 666 struct iwl_ct_kill_config cmd; 667 struct iwl_ct_kill_throttling_config adv_cmd; 668 int ret = 0; 669 670 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 671 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); 672 673 priv->thermal_throttle.ct_kill_toggle = false; 674 675 if (priv->lib->support_ct_kill_exit) { 676 adv_cmd.critical_temperature_enter = 677 cpu_to_le32(priv->hw_params.ct_kill_threshold); 678 adv_cmd.critical_temperature_exit = 679 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); 680 681 ret = iwl_dvm_send_cmd_pdu(priv, 682 REPLY_CT_KILL_CONFIG_CMD, 683 0, sizeof(adv_cmd), &adv_cmd); 684 if (ret) 685 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 686 else 687 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 688 "succeeded, critical temperature enter is %d," 689 "exit is %d\n", 690 priv->hw_params.ct_kill_threshold, 691 priv->hw_params.ct_kill_exit_threshold); 692 } else { 693 cmd.critical_temperature_R = 694 cpu_to_le32(priv->hw_params.ct_kill_threshold); 695 696 ret = iwl_dvm_send_cmd_pdu(priv, 697 REPLY_CT_KILL_CONFIG_CMD, 698 0, sizeof(cmd), &cmd); 699 if (ret) 700 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 701 else 702 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 703 "succeeded, " 704 "critical temperature is %d\n", 705 priv->hw_params.ct_kill_threshold); 706 } 707 } 708 709 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) 710 { 711 struct iwl_calib_cfg_cmd calib_cfg_cmd; 712 struct iwl_host_cmd cmd = { 713 .id = CALIBRATION_CFG_CMD, 714 .len = { sizeof(struct iwl_calib_cfg_cmd), }, 715 .data = { &calib_cfg_cmd, }, 716 }; 717 718 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); 719 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; 720 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); 721 722 return iwl_dvm_send_cmd(priv, &cmd); 723 } 724 725 726 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) 727 { 728 struct iwl_tx_ant_config_cmd tx_ant_cmd = { 729 .valid = cpu_to_le32(valid_tx_ant), 730 }; 731 732 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { 733 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); 734 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0, 735 sizeof(struct iwl_tx_ant_config_cmd), 736 &tx_ant_cmd); 737 } else { 738 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); 739 return -EOPNOTSUPP; 740 } 741 } 742 743 static void iwl_send_bt_config(struct iwl_priv *priv) 744 { 745 struct iwl_bt_cmd bt_cmd = { 746 .lead_time = BT_LEAD_TIME_DEF, 747 .max_kill = BT_MAX_KILL_DEF, 748 .kill_ack_mask = 0, 749 .kill_cts_mask = 0, 750 }; 751 752 if (!iwlwifi_mod_params.bt_coex_active) 753 bt_cmd.flags = BT_COEX_DISABLE; 754 else 755 bt_cmd.flags = BT_COEX_ENABLE; 756 757 priv->bt_enable_flag = bt_cmd.flags; 758 IWL_DEBUG_INFO(priv, "BT coex %s\n", 759 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); 760 761 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 762 0, sizeof(struct iwl_bt_cmd), &bt_cmd)) 763 IWL_ERR(priv, "failed to send BT Coex Config\n"); 764 } 765 766 /** 767 * iwl_alive_start - called after REPLY_ALIVE notification received 768 * from protocol/runtime uCode (initialization uCode's 769 * Alive gets handled by iwl_init_alive_start()). 770 */ 771 int iwl_alive_start(struct iwl_priv *priv) 772 { 773 int ret = 0; 774 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 775 776 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); 777 778 /* After the ALIVE response, we can send host commands to the uCode */ 779 set_bit(STATUS_ALIVE, &priv->status); 780 781 if (iwl_is_rfkill(priv)) 782 return -ERFKILL; 783 784 if (priv->event_log.ucode_trace) { 785 /* start collecting data now */ 786 mod_timer(&priv->ucode_trace, jiffies); 787 } 788 789 /* download priority table before any calibration request */ 790 if (priv->lib->bt_params && 791 priv->lib->bt_params->advanced_bt_coexist) { 792 /* Configure Bluetooth device coexistence support */ 793 if (priv->lib->bt_params->bt_sco_disable) 794 priv->bt_enable_pspoll = false; 795 else 796 priv->bt_enable_pspoll = true; 797 798 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 799 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 800 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 801 iwlagn_send_advance_bt_config(priv); 802 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; 803 priv->cur_rssi_ctx = NULL; 804 805 iwl_send_prio_tbl(priv); 806 807 /* FIXME: w/a to force change uCode BT state machine */ 808 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, 809 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 810 if (ret) 811 return ret; 812 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, 813 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 814 if (ret) 815 return ret; 816 } else if (priv->lib->bt_params) { 817 /* 818 * default is 2-wire BT coexexistence support 819 */ 820 iwl_send_bt_config(priv); 821 } 822 823 /* 824 * Perform runtime calibrations, including DC calibration. 825 */ 826 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); 827 828 ieee80211_wake_queues(priv->hw); 829 830 /* Configure Tx antenna selection based on H/W config */ 831 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant); 832 833 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { 834 struct iwl_rxon_cmd *active_rxon = 835 (struct iwl_rxon_cmd *)&ctx->active; 836 /* apply any changes in staging */ 837 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; 838 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; 839 } else { 840 struct iwl_rxon_context *tmp; 841 /* Initialize our rx_config data */ 842 for_each_context(priv, tmp) 843 iwl_connection_init_rx_config(priv, tmp); 844 845 iwlagn_set_rxon_chain(priv, ctx); 846 } 847 848 if (!priv->wowlan) { 849 /* WoWLAN ucode will not reply in the same way, skip it */ 850 iwl_reset_run_time_calib(priv); 851 } 852 853 set_bit(STATUS_READY, &priv->status); 854 855 /* Configure the adapter for unassociated operation */ 856 ret = iwlagn_commit_rxon(priv, ctx); 857 if (ret) 858 return ret; 859 860 /* At this point, the NIC is initialized and operational */ 861 iwl_rf_kill_ct_config(priv); 862 863 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); 864 865 return iwl_power_update_mode(priv, true); 866 } 867 868 /** 869 * iwl_clear_driver_stations - clear knowledge of all stations from driver 870 * @priv: iwl priv struct 871 * 872 * This is called during iwl_down() to make sure that in the case 873 * we're coming there from a hardware restart mac80211 will be 874 * able to reconfigure stations -- if we're getting there in the 875 * normal down flow then the stations will already be cleared. 876 */ 877 static void iwl_clear_driver_stations(struct iwl_priv *priv) 878 { 879 struct iwl_rxon_context *ctx; 880 881 spin_lock_bh(&priv->sta_lock); 882 memset(priv->stations, 0, sizeof(priv->stations)); 883 priv->num_stations = 0; 884 885 priv->ucode_key_table = 0; 886 887 for_each_context(priv, ctx) { 888 /* 889 * Remove all key information that is not stored as part 890 * of station information since mac80211 may not have had 891 * a chance to remove all the keys. When device is 892 * reconfigured by mac80211 after an error all keys will 893 * be reconfigured. 894 */ 895 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 896 ctx->key_mapping_keys = 0; 897 } 898 899 spin_unlock_bh(&priv->sta_lock); 900 } 901 902 void iwl_down(struct iwl_priv *priv) 903 { 904 int exit_pending; 905 906 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); 907 908 lockdep_assert_held(&priv->mutex); 909 910 iwl_scan_cancel_timeout(priv, 200); 911 912 exit_pending = 913 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); 914 915 iwl_clear_ucode_stations(priv, NULL); 916 iwl_dealloc_bcast_stations(priv); 917 iwl_clear_driver_stations(priv); 918 919 /* reset BT coex data */ 920 priv->bt_status = 0; 921 priv->cur_rssi_ctx = NULL; 922 priv->bt_is_sco = 0; 923 if (priv->lib->bt_params) 924 priv->bt_traffic_load = 925 priv->lib->bt_params->bt_init_traffic_load; 926 else 927 priv->bt_traffic_load = 0; 928 priv->bt_full_concurrent = false; 929 priv->bt_ci_compliance = 0; 930 931 /* Wipe out the EXIT_PENDING status bit if we are not actually 932 * exiting the module */ 933 if (!exit_pending) 934 clear_bit(STATUS_EXIT_PENDING, &priv->status); 935 936 if (priv->mac80211_registered) 937 ieee80211_stop_queues(priv->hw); 938 939 priv->ucode_loaded = false; 940 iwl_trans_stop_device(priv->trans); 941 942 /* Set num_aux_in_flight must be done after the transport is stopped */ 943 atomic_set(&priv->num_aux_in_flight, 0); 944 945 /* Clear out all status bits but a few that are stable across reset */ 946 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << 947 STATUS_RF_KILL_HW | 948 test_bit(STATUS_FW_ERROR, &priv->status) << 949 STATUS_FW_ERROR | 950 test_bit(STATUS_EXIT_PENDING, &priv->status) << 951 STATUS_EXIT_PENDING; 952 953 dev_kfree_skb(priv->beacon_skb); 954 priv->beacon_skb = NULL; 955 } 956 957 /***************************************************************************** 958 * 959 * Workqueue callbacks 960 * 961 *****************************************************************************/ 962 963 static void iwl_bg_run_time_calib_work(struct work_struct *work) 964 { 965 struct iwl_priv *priv = container_of(work, struct iwl_priv, 966 run_time_calib_work); 967 968 mutex_lock(&priv->mutex); 969 970 if (test_bit(STATUS_EXIT_PENDING, &priv->status) || 971 test_bit(STATUS_SCANNING, &priv->status)) { 972 mutex_unlock(&priv->mutex); 973 return; 974 } 975 976 if (priv->start_calib) { 977 iwl_chain_noise_calibration(priv); 978 iwl_sensitivity_calibration(priv); 979 } 980 981 mutex_unlock(&priv->mutex); 982 } 983 984 void iwlagn_prepare_restart(struct iwl_priv *priv) 985 { 986 bool bt_full_concurrent; 987 u8 bt_ci_compliance; 988 u8 bt_load; 989 u8 bt_status; 990 bool bt_is_sco; 991 int i; 992 993 lockdep_assert_held(&priv->mutex); 994 995 priv->is_open = 0; 996 997 /* 998 * __iwl_down() will clear the BT status variables, 999 * which is correct, but when we restart we really 1000 * want to keep them so restore them afterwards. 1001 * 1002 * The restart process will later pick them up and 1003 * re-configure the hw when we reconfigure the BT 1004 * command. 1005 */ 1006 bt_full_concurrent = priv->bt_full_concurrent; 1007 bt_ci_compliance = priv->bt_ci_compliance; 1008 bt_load = priv->bt_traffic_load; 1009 bt_status = priv->bt_status; 1010 bt_is_sco = priv->bt_is_sco; 1011 1012 iwl_down(priv); 1013 1014 priv->bt_full_concurrent = bt_full_concurrent; 1015 priv->bt_ci_compliance = bt_ci_compliance; 1016 priv->bt_traffic_load = bt_load; 1017 priv->bt_status = bt_status; 1018 priv->bt_is_sco = bt_is_sco; 1019 1020 /* reset aggregation queues */ 1021 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) 1022 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1023 /* and stop counts */ 1024 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 1025 atomic_set(&priv->queue_stop_count[i], 0); 1026 1027 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); 1028 } 1029 1030 static void iwl_bg_restart(struct work_struct *data) 1031 { 1032 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); 1033 1034 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 1035 return; 1036 1037 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { 1038 mutex_lock(&priv->mutex); 1039 iwlagn_prepare_restart(priv); 1040 mutex_unlock(&priv->mutex); 1041 iwl_cancel_deferred_work(priv); 1042 if (priv->mac80211_registered) 1043 ieee80211_restart_hw(priv->hw); 1044 else 1045 IWL_ERR(priv, 1046 "Cannot request restart before registering with mac80211\n"); 1047 } else { 1048 WARN_ON(1); 1049 } 1050 } 1051 1052 /***************************************************************************** 1053 * 1054 * driver setup and teardown 1055 * 1056 *****************************************************************************/ 1057 1058 static void iwl_setup_deferred_work(struct iwl_priv *priv) 1059 { 1060 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0); 1061 1062 INIT_WORK(&priv->restart, iwl_bg_restart); 1063 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); 1064 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); 1065 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); 1066 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); 1067 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); 1068 1069 iwl_setup_scan_deferred_work(priv); 1070 1071 if (priv->lib->bt_params) 1072 iwlagn_bt_setup_deferred_work(priv); 1073 1074 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0); 1075 1076 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0); 1077 } 1078 1079 void iwl_cancel_deferred_work(struct iwl_priv *priv) 1080 { 1081 if (priv->lib->bt_params) 1082 iwlagn_bt_cancel_deferred_work(priv); 1083 1084 cancel_work_sync(&priv->run_time_calib_work); 1085 cancel_work_sync(&priv->beacon_update); 1086 1087 iwl_cancel_scan_deferred_work(priv); 1088 1089 cancel_work_sync(&priv->bt_full_concurrency); 1090 cancel_work_sync(&priv->bt_runtime_config); 1091 1092 del_timer_sync(&priv->statistics_periodic); 1093 del_timer_sync(&priv->ucode_trace); 1094 } 1095 1096 static int iwl_init_drv(struct iwl_priv *priv) 1097 { 1098 spin_lock_init(&priv->sta_lock); 1099 1100 mutex_init(&priv->mutex); 1101 1102 INIT_LIST_HEAD(&priv->calib_results); 1103 1104 priv->band = NL80211_BAND_2GHZ; 1105 1106 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold; 1107 1108 priv->iw_mode = NL80211_IFTYPE_STATION; 1109 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; 1110 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; 1111 priv->agg_tids_count = 0; 1112 1113 priv->rx_statistics_jiffies = jiffies; 1114 1115 /* Choose which receivers/antennas to use */ 1116 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); 1117 1118 iwl_init_scan_params(priv); 1119 1120 /* init bt coex */ 1121 if (priv->lib->bt_params && 1122 priv->lib->bt_params->advanced_bt_coexist) { 1123 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 1124 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 1125 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 1126 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; 1127 priv->bt_duration = BT_DURATION_LIMIT_DEF; 1128 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; 1129 } 1130 1131 return 0; 1132 } 1133 1134 static void iwl_uninit_drv(struct iwl_priv *priv) 1135 { 1136 kfree(priv->scan_cmd); 1137 kfree(priv->beacon_cmd); 1138 kfree(rcu_dereference_raw(priv->noa_data)); 1139 iwl_calib_free_results(priv); 1140 #ifdef CONFIG_IWLWIFI_DEBUGFS 1141 kfree(priv->wowlan_sram); 1142 #endif 1143 } 1144 1145 static void iwl_set_hw_params(struct iwl_priv *priv) 1146 { 1147 if (priv->cfg->ht_params) 1148 priv->hw_params.use_rts_for_aggregation = 1149 priv->cfg->ht_params->use_rts_for_aggregation; 1150 1151 /* Device-specific setup */ 1152 priv->lib->set_hw_params(priv); 1153 } 1154 1155 1156 1157 /* show what optional capabilities we have */ 1158 static void iwl_option_config(struct iwl_priv *priv) 1159 { 1160 #ifdef CONFIG_IWLWIFI_DEBUG 1161 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); 1162 #else 1163 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); 1164 #endif 1165 1166 #ifdef CONFIG_IWLWIFI_DEBUGFS 1167 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); 1168 #else 1169 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); 1170 #endif 1171 1172 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING 1173 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); 1174 #else 1175 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); 1176 #endif 1177 } 1178 1179 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) 1180 { 1181 struct iwl_nvm_data *data = priv->nvm_data; 1182 1183 if (data->sku_cap_11n_enable && 1184 !priv->cfg->ht_params) { 1185 IWL_ERR(priv, "Invalid 11n configuration\n"); 1186 return -EINVAL; 1187 } 1188 1189 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable && 1190 !data->sku_cap_band_52ghz_enable) { 1191 IWL_ERR(priv, "Invalid device sku\n"); 1192 return -EINVAL; 1193 } 1194 1195 IWL_DEBUG_INFO(priv, 1196 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n", 1197 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled", 1198 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled", 1199 data->sku_cap_11n_enable ? "" : "NOT", "enabled"); 1200 1201 priv->hw_params.tx_chains_num = 1202 num_of_ant(data->valid_tx_ant); 1203 if (priv->cfg->rx_with_siso_diversity) 1204 priv->hw_params.rx_chains_num = 1; 1205 else 1206 priv->hw_params.rx_chains_num = 1207 num_of_ant(data->valid_rx_ant); 1208 1209 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", 1210 data->valid_tx_ant, 1211 data->valid_rx_ant); 1212 1213 return 0; 1214 } 1215 1216 static int iwl_nvm_check_version(struct iwl_nvm_data *data, 1217 struct iwl_trans *trans) 1218 { 1219 if (data->nvm_version >= trans->cfg->nvm_ver || 1220 data->calib_version >= trans->cfg->nvm_calib_ver) { 1221 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n", 1222 data->nvm_version, data->calib_version); 1223 return 0; 1224 } 1225 1226 IWL_ERR(trans, 1227 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n", 1228 data->nvm_version, trans->cfg->nvm_ver, 1229 data->calib_version, trans->cfg->nvm_calib_ver); 1230 return -EINVAL; 1231 } 1232 1233 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, 1234 const struct iwl_cfg *cfg, 1235 const struct iwl_fw *fw, 1236 struct dentry *dbgfs_dir) 1237 { 1238 struct iwl_priv *priv; 1239 struct ieee80211_hw *hw; 1240 struct iwl_op_mode *op_mode; 1241 u16 num_mac; 1242 u32 ucode_flags; 1243 struct iwl_trans_config trans_cfg = {}; 1244 static const u8 no_reclaim_cmds[] = { 1245 REPLY_RX_PHY_CMD, 1246 REPLY_RX_MPDU_CMD, 1247 REPLY_COMPRESSED_BA, 1248 STATISTICS_NOTIFICATION, 1249 REPLY_TX, 1250 }; 1251 int i; 1252 1253 /************************ 1254 * 1. Allocating HW data 1255 ************************/ 1256 hw = iwl_alloc_all(); 1257 if (!hw) { 1258 pr_err("%s: Cannot allocate network device\n", cfg->name); 1259 goto out; 1260 } 1261 1262 op_mode = hw->priv; 1263 op_mode->ops = &iwl_dvm_ops; 1264 priv = IWL_OP_MODE_GET_DVM(op_mode); 1265 priv->trans = trans; 1266 priv->dev = trans->dev; 1267 priv->cfg = cfg; 1268 priv->fw = fw; 1269 1270 switch (priv->cfg->device_family) { 1271 case IWL_DEVICE_FAMILY_1000: 1272 case IWL_DEVICE_FAMILY_100: 1273 priv->lib = &iwl_dvm_1000_cfg; 1274 break; 1275 case IWL_DEVICE_FAMILY_2000: 1276 priv->lib = &iwl_dvm_2000_cfg; 1277 break; 1278 case IWL_DEVICE_FAMILY_105: 1279 priv->lib = &iwl_dvm_105_cfg; 1280 break; 1281 case IWL_DEVICE_FAMILY_2030: 1282 case IWL_DEVICE_FAMILY_135: 1283 priv->lib = &iwl_dvm_2030_cfg; 1284 break; 1285 case IWL_DEVICE_FAMILY_5000: 1286 priv->lib = &iwl_dvm_5000_cfg; 1287 break; 1288 case IWL_DEVICE_FAMILY_5150: 1289 priv->lib = &iwl_dvm_5150_cfg; 1290 break; 1291 case IWL_DEVICE_FAMILY_6000: 1292 case IWL_DEVICE_FAMILY_6000i: 1293 priv->lib = &iwl_dvm_6000_cfg; 1294 break; 1295 case IWL_DEVICE_FAMILY_6005: 1296 priv->lib = &iwl_dvm_6005_cfg; 1297 break; 1298 case IWL_DEVICE_FAMILY_6050: 1299 case IWL_DEVICE_FAMILY_6150: 1300 priv->lib = &iwl_dvm_6050_cfg; 1301 break; 1302 case IWL_DEVICE_FAMILY_6030: 1303 priv->lib = &iwl_dvm_6030_cfg; 1304 break; 1305 default: 1306 break; 1307 } 1308 1309 if (WARN_ON(!priv->lib)) 1310 goto out_free_hw; 1311 1312 /* 1313 * Populate the state variables that the transport layer needs 1314 * to know about. 1315 */ 1316 trans_cfg.op_mode = op_mode; 1317 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 1318 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 1319 1320 switch (iwlwifi_mod_params.amsdu_size) { 1321 case IWL_AMSDU_DEF: 1322 case IWL_AMSDU_4K: 1323 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 1324 break; 1325 case IWL_AMSDU_8K: 1326 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 1327 break; 1328 case IWL_AMSDU_12K: 1329 default: 1330 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 1331 pr_err("Unsupported amsdu_size: %d\n", 1332 iwlwifi_mod_params.amsdu_size); 1333 } 1334 1335 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED; 1336 1337 trans_cfg.command_groups = iwl_dvm_groups; 1338 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups); 1339 1340 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM; 1341 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 1342 driver_data[2]); 1343 1344 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < 1345 priv->cfg->base_params->num_of_queues); 1346 1347 ucode_flags = fw->ucode_capa.flags; 1348 1349 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { 1350 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; 1351 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; 1352 } else { 1353 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1354 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1355 } 1356 1357 /* Configure transport layer */ 1358 iwl_trans_configure(priv->trans, &trans_cfg); 1359 1360 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 1361 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 1362 trans->command_groups = trans_cfg.command_groups; 1363 trans->command_groups_size = trans_cfg.command_groups_size; 1364 1365 /* At this point both hw and priv are allocated. */ 1366 1367 SET_IEEE80211_DEV(priv->hw, priv->trans->dev); 1368 1369 iwl_option_config(priv); 1370 1371 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); 1372 1373 /* is antenna coupling more than 35dB ? */ 1374 priv->bt_ant_couple_ok = 1375 (iwlwifi_mod_params.antenna_coupling > 1376 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? 1377 true : false; 1378 1379 /* bt channel inhibition enabled*/ 1380 priv->bt_ch_announce = true; 1381 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", 1382 (priv->bt_ch_announce) ? "On" : "Off"); 1383 1384 /* these spin locks will be used in apm_ops.init and EEPROM access 1385 * we should init now 1386 */ 1387 spin_lock_init(&priv->statistics.lock); 1388 1389 /*********************** 1390 * 2. Read REV register 1391 ***********************/ 1392 IWL_INFO(priv, "Detected %s, REV=0x%X\n", 1393 priv->cfg->name, priv->trans->hw_rev); 1394 1395 if (iwl_trans_start_hw(priv->trans)) 1396 goto out_free_hw; 1397 1398 /* Read the EEPROM */ 1399 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob, 1400 &priv->eeprom_blob_size)) { 1401 IWL_ERR(priv, "Unable to init EEPROM\n"); 1402 goto out_free_hw; 1403 } 1404 1405 /* Reset chip to save power until we load uCode during "up". */ 1406 iwl_trans_stop_device(priv->trans); 1407 1408 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg, 1409 priv->eeprom_blob, 1410 priv->eeprom_blob_size); 1411 if (!priv->nvm_data) 1412 goto out_free_eeprom_blob; 1413 1414 if (iwl_nvm_check_version(priv->nvm_data, priv->trans)) 1415 goto out_free_eeprom; 1416 1417 if (iwl_eeprom_init_hw_params(priv)) 1418 goto out_free_eeprom; 1419 1420 /* extract MAC Address */ 1421 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN); 1422 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); 1423 priv->hw->wiphy->addresses = priv->addresses; 1424 priv->hw->wiphy->n_addresses = 1; 1425 num_mac = priv->nvm_data->n_hw_addrs; 1426 if (num_mac > 1) { 1427 memcpy(priv->addresses[1].addr, priv->addresses[0].addr, 1428 ETH_ALEN); 1429 priv->addresses[1].addr[5]++; 1430 priv->hw->wiphy->n_addresses++; 1431 } 1432 1433 /************************ 1434 * 4. Setup HW constants 1435 ************************/ 1436 iwl_set_hw_params(priv); 1437 1438 if (!(priv->nvm_data->sku_cap_ipan_enable)) { 1439 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n"); 1440 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; 1441 /* 1442 * if not PAN, then don't support P2P -- might be a uCode 1443 * packaging bug or due to the eeprom check above 1444 */ 1445 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1446 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1447 1448 /* Configure transport layer again*/ 1449 iwl_trans_configure(priv->trans, &trans_cfg); 1450 } 1451 1452 /******************* 1453 * 5. Setup priv 1454 *******************/ 1455 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { 1456 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1457 if (i < IWLAGN_FIRST_AMPDU_QUEUE && 1458 i != IWL_DEFAULT_CMD_QUEUE_NUM && 1459 i != IWL_IPAN_CMD_QUEUE_NUM) 1460 priv->queue_to_mac80211[i] = i; 1461 atomic_set(&priv->queue_stop_count[i], 0); 1462 } 1463 1464 if (iwl_init_drv(priv)) 1465 goto out_free_eeprom; 1466 1467 /* At this point both hw and priv are initialized. */ 1468 1469 /******************** 1470 * 6. Setup services 1471 ********************/ 1472 iwl_setup_deferred_work(priv); 1473 iwl_setup_rx_handlers(priv); 1474 1475 iwl_power_initialize(priv); 1476 iwl_tt_initialize(priv); 1477 1478 snprintf(priv->hw->wiphy->fw_version, 1479 sizeof(priv->hw->wiphy->fw_version), 1480 "%s", fw->fw_version); 1481 1482 priv->new_scan_threshold_behaviour = 1483 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); 1484 1485 priv->phy_calib_chain_noise_reset_cmd = 1486 fw->ucode_capa.standard_phy_calibration_size; 1487 priv->phy_calib_chain_noise_gain_cmd = 1488 fw->ucode_capa.standard_phy_calibration_size + 1; 1489 1490 /* initialize all valid contexts */ 1491 iwl_init_context(priv, ucode_flags); 1492 1493 /************************************************** 1494 * This is still part of probe() in a sense... 1495 * 1496 * 7. Setup and register with mac80211 and debugfs 1497 **************************************************/ 1498 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa)) 1499 goto out_destroy_workqueue; 1500 1501 iwl_dbgfs_register(priv, dbgfs_dir); 1502 1503 return op_mode; 1504 1505 out_destroy_workqueue: 1506 iwl_tt_exit(priv); 1507 iwl_cancel_deferred_work(priv); 1508 destroy_workqueue(priv->workqueue); 1509 priv->workqueue = NULL; 1510 iwl_uninit_drv(priv); 1511 out_free_eeprom_blob: 1512 kfree(priv->eeprom_blob); 1513 out_free_eeprom: 1514 kfree(priv->nvm_data); 1515 out_free_hw: 1516 ieee80211_free_hw(priv->hw); 1517 out: 1518 op_mode = NULL; 1519 return op_mode; 1520 } 1521 1522 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) 1523 { 1524 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1525 1526 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); 1527 1528 iwlagn_mac_unregister(priv); 1529 1530 iwl_tt_exit(priv); 1531 1532 kfree(priv->eeprom_blob); 1533 kfree(priv->nvm_data); 1534 1535 /*netif_stop_queue(dev); */ 1536 flush_workqueue(priv->workqueue); 1537 1538 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes 1539 * priv->workqueue... so we can't take down the workqueue 1540 * until now... */ 1541 destroy_workqueue(priv->workqueue); 1542 priv->workqueue = NULL; 1543 1544 iwl_uninit_drv(priv); 1545 1546 dev_kfree_skb(priv->beacon_skb); 1547 1548 iwl_trans_op_mode_leave(priv->trans); 1549 ieee80211_free_hw(priv->hw); 1550 } 1551 1552 static const char * const desc_lookup_text[] = { 1553 "OK", 1554 "FAIL", 1555 "BAD_PARAM", 1556 "BAD_CHECKSUM", 1557 "NMI_INTERRUPT_WDG", 1558 "SYSASSERT", 1559 "FATAL_ERROR", 1560 "BAD_COMMAND", 1561 "HW_ERROR_TUNE_LOCK", 1562 "HW_ERROR_TEMPERATURE", 1563 "ILLEGAL_CHAN_FREQ", 1564 "VCC_NOT_STABLE", 1565 "FH_ERROR", 1566 "NMI_INTERRUPT_HOST", 1567 "NMI_INTERRUPT_ACTION_PT", 1568 "NMI_INTERRUPT_UNKNOWN", 1569 "UCODE_VERSION_MISMATCH", 1570 "HW_ERROR_ABS_LOCK", 1571 "HW_ERROR_CAL_LOCK_FAIL", 1572 "NMI_INTERRUPT_INST_ACTION_PT", 1573 "NMI_INTERRUPT_DATA_ACTION_PT", 1574 "NMI_TRM_HW_ER", 1575 "NMI_INTERRUPT_TRM", 1576 "NMI_INTERRUPT_BREAK_POINT", 1577 "DEBUG_0", 1578 "DEBUG_1", 1579 "DEBUG_2", 1580 "DEBUG_3", 1581 }; 1582 1583 static struct { char *name; u8 num; } advanced_lookup[] = { 1584 { "NMI_INTERRUPT_WDG", 0x34 }, 1585 { "SYSASSERT", 0x35 }, 1586 { "UCODE_VERSION_MISMATCH", 0x37 }, 1587 { "BAD_COMMAND", 0x38 }, 1588 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 1589 { "FATAL_ERROR", 0x3D }, 1590 { "NMI_TRM_HW_ERR", 0x46 }, 1591 { "NMI_INTERRUPT_TRM", 0x4C }, 1592 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 1593 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 1594 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 1595 { "NMI_INTERRUPT_HOST", 0x66 }, 1596 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 1597 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 1598 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 1599 { "ADVANCED_SYSASSERT", 0 }, 1600 }; 1601 1602 static const char *desc_lookup(u32 num) 1603 { 1604 int i; 1605 int max = ARRAY_SIZE(desc_lookup_text); 1606 1607 if (num < max) 1608 return desc_lookup_text[num]; 1609 1610 max = ARRAY_SIZE(advanced_lookup) - 1; 1611 for (i = 0; i < max; i++) { 1612 if (advanced_lookup[i].num == num) 1613 break; 1614 } 1615 return advanced_lookup[i].name; 1616 } 1617 1618 #define ERROR_START_OFFSET (1 * sizeof(u32)) 1619 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 1620 1621 static void iwl_dump_nic_error_log(struct iwl_priv *priv) 1622 { 1623 struct iwl_trans *trans = priv->trans; 1624 u32 base; 1625 struct iwl_error_event_table table; 1626 1627 base = priv->device_pointers.error_event_table; 1628 if (priv->cur_ucode == IWL_UCODE_INIT) { 1629 if (!base) 1630 base = priv->fw->init_errlog_ptr; 1631 } else { 1632 if (!base) 1633 base = priv->fw->inst_errlog_ptr; 1634 } 1635 1636 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1637 IWL_ERR(priv, 1638 "Not valid error log pointer 0x%08X for %s uCode\n", 1639 base, 1640 (priv->cur_ucode == IWL_UCODE_INIT) 1641 ? "Init" : "RT"); 1642 return; 1643 } 1644 1645 /*TODO: Update dbgfs with ISR error stats obtained below */ 1646 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 1647 1648 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 1649 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 1650 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 1651 priv->status, table.valid); 1652 } 1653 1654 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, 1655 desc_lookup(table.error_id)); 1656 IWL_ERR(priv, "0x%08X | uPc\n", table.pc); 1657 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); 1658 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); 1659 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); 1660 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); 1661 IWL_ERR(priv, "0x%08X | data1\n", table.data1); 1662 IWL_ERR(priv, "0x%08X | data2\n", table.data2); 1663 IWL_ERR(priv, "0x%08X | line\n", table.line); 1664 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); 1665 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); 1666 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); 1667 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); 1668 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); 1669 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); 1670 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); 1671 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); 1672 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); 1673 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); 1674 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); 1675 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); 1676 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); 1677 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); 1678 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); 1679 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); 1680 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); 1681 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); 1682 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); 1683 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 1684 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 1685 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 1686 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); 1687 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); 1688 } 1689 1690 #define EVENT_START_OFFSET (4 * sizeof(u32)) 1691 1692 /** 1693 * iwl_print_event_log - Dump error event log to syslog 1694 * 1695 */ 1696 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, 1697 u32 num_events, u32 mode, 1698 int pos, char **buf, size_t bufsz) 1699 { 1700 u32 i; 1701 u32 base; /* SRAM byte address of event log header */ 1702 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ 1703 u32 ptr; /* SRAM byte address of log data */ 1704 u32 ev, time, data; /* event log data */ 1705 unsigned long reg_flags; 1706 1707 struct iwl_trans *trans = priv->trans; 1708 1709 if (num_events == 0) 1710 return pos; 1711 1712 base = priv->device_pointers.log_event_table; 1713 if (priv->cur_ucode == IWL_UCODE_INIT) { 1714 if (!base) 1715 base = priv->fw->init_evtlog_ptr; 1716 } else { 1717 if (!base) 1718 base = priv->fw->inst_evtlog_ptr; 1719 } 1720 1721 if (mode == 0) 1722 event_size = 2 * sizeof(u32); 1723 else 1724 event_size = 3 * sizeof(u32); 1725 1726 ptr = base + EVENT_START_OFFSET + (start_idx * event_size); 1727 1728 /* Make sure device is powered up for SRAM reads */ 1729 if (!iwl_trans_grab_nic_access(trans, ®_flags)) 1730 return pos; 1731 1732 /* Set starting address; reads will auto-increment */ 1733 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); 1734 1735 /* "time" is actually "data" for mode 0 (no timestamp). 1736 * place event id # at far right for easier visual parsing. */ 1737 for (i = 0; i < num_events; i++) { 1738 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1739 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1740 if (mode == 0) { 1741 /* data, ev */ 1742 if (bufsz) { 1743 pos += scnprintf(*buf + pos, bufsz - pos, 1744 "EVT_LOG:0x%08x:%04u\n", 1745 time, ev); 1746 } else { 1747 trace_iwlwifi_dev_ucode_event(trans->dev, 0, 1748 time, ev); 1749 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", 1750 time, ev); 1751 } 1752 } else { 1753 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1754 if (bufsz) { 1755 pos += scnprintf(*buf + pos, bufsz - pos, 1756 "EVT_LOGT:%010u:0x%08x:%04u\n", 1757 time, data, ev); 1758 } else { 1759 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", 1760 time, data, ev); 1761 trace_iwlwifi_dev_ucode_event(trans->dev, time, 1762 data, ev); 1763 } 1764 } 1765 } 1766 1767 /* Allow device to power down */ 1768 iwl_trans_release_nic_access(trans, ®_flags); 1769 return pos; 1770 } 1771 1772 /** 1773 * iwl_print_last_event_logs - Dump the newest # of event log to syslog 1774 */ 1775 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, 1776 u32 num_wraps, u32 next_entry, 1777 u32 size, u32 mode, 1778 int pos, char **buf, size_t bufsz) 1779 { 1780 /* 1781 * display the newest DEFAULT_LOG_ENTRIES entries 1782 * i.e the entries just before the next ont that uCode would fill. 1783 */ 1784 if (num_wraps) { 1785 if (next_entry < size) { 1786 pos = iwl_print_event_log(priv, 1787 capacity - (size - next_entry), 1788 size - next_entry, mode, 1789 pos, buf, bufsz); 1790 pos = iwl_print_event_log(priv, 0, 1791 next_entry, mode, 1792 pos, buf, bufsz); 1793 } else 1794 pos = iwl_print_event_log(priv, next_entry - size, 1795 size, mode, pos, buf, bufsz); 1796 } else { 1797 if (next_entry < size) { 1798 pos = iwl_print_event_log(priv, 0, next_entry, 1799 mode, pos, buf, bufsz); 1800 } else { 1801 pos = iwl_print_event_log(priv, next_entry - size, 1802 size, mode, pos, buf, bufsz); 1803 } 1804 } 1805 return pos; 1806 } 1807 1808 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) 1809 1810 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, 1811 char **buf) 1812 { 1813 u32 base; /* SRAM byte address of event log header */ 1814 u32 capacity; /* event log capacity in # entries */ 1815 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 1816 u32 num_wraps; /* # times uCode wrapped to top of log */ 1817 u32 next_entry; /* index of next entry to be written by uCode */ 1818 u32 size; /* # entries that we'll print */ 1819 u32 logsize; 1820 int pos = 0; 1821 size_t bufsz = 0; 1822 struct iwl_trans *trans = priv->trans; 1823 1824 base = priv->device_pointers.log_event_table; 1825 if (priv->cur_ucode == IWL_UCODE_INIT) { 1826 logsize = priv->fw->init_evtlog_size; 1827 if (!base) 1828 base = priv->fw->init_evtlog_ptr; 1829 } else { 1830 logsize = priv->fw->inst_evtlog_size; 1831 if (!base) 1832 base = priv->fw->inst_evtlog_ptr; 1833 } 1834 1835 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1836 IWL_ERR(priv, 1837 "Invalid event log pointer 0x%08X for %s uCode\n", 1838 base, 1839 (priv->cur_ucode == IWL_UCODE_INIT) 1840 ? "Init" : "RT"); 1841 return -EINVAL; 1842 } 1843 1844 /* event log header */ 1845 capacity = iwl_trans_read_mem32(trans, base); 1846 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32))); 1847 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32))); 1848 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32))); 1849 1850 if (capacity > logsize) { 1851 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " 1852 "entries\n", capacity, logsize); 1853 capacity = logsize; 1854 } 1855 1856 if (next_entry > logsize) { 1857 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", 1858 next_entry, logsize); 1859 next_entry = logsize; 1860 } 1861 1862 size = num_wraps ? capacity : next_entry; 1863 1864 /* bail out if nothing in log */ 1865 if (size == 0) { 1866 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); 1867 return pos; 1868 } 1869 1870 if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log) 1871 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) 1872 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; 1873 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", 1874 size); 1875 1876 #ifdef CONFIG_IWLWIFI_DEBUG 1877 if (buf) { 1878 if (full_log) 1879 bufsz = capacity * 48; 1880 else 1881 bufsz = size * 48; 1882 *buf = kmalloc(bufsz, GFP_KERNEL); 1883 if (!*buf) 1884 return -ENOMEM; 1885 } 1886 if (iwl_have_debug_level(IWL_DL_FW) || full_log) { 1887 /* 1888 * if uCode has wrapped back to top of log, 1889 * start at the oldest entry, 1890 * i.e the next one that uCode would fill. 1891 */ 1892 if (num_wraps) 1893 pos = iwl_print_event_log(priv, next_entry, 1894 capacity - next_entry, mode, 1895 pos, buf, bufsz); 1896 /* (then/else) start at top of log */ 1897 pos = iwl_print_event_log(priv, 0, 1898 next_entry, mode, pos, buf, bufsz); 1899 } else 1900 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1901 next_entry, size, mode, 1902 pos, buf, bufsz); 1903 #else 1904 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1905 next_entry, size, mode, 1906 pos, buf, bufsz); 1907 #endif 1908 return pos; 1909 } 1910 1911 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) 1912 { 1913 unsigned int reload_msec; 1914 unsigned long reload_jiffies; 1915 1916 if (iwl_have_debug_level(IWL_DL_FW)) 1917 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); 1918 1919 /* uCode is no longer loaded. */ 1920 priv->ucode_loaded = false; 1921 1922 /* Set the FW error flag -- cleared on iwl_down */ 1923 set_bit(STATUS_FW_ERROR, &priv->status); 1924 1925 iwl_abort_notification_waits(&priv->notif_wait); 1926 1927 /* Keep the restart process from trying to send host 1928 * commands by clearing the ready bit */ 1929 clear_bit(STATUS_READY, &priv->status); 1930 1931 if (!ondemand) { 1932 /* 1933 * If firmware keep reloading, then it indicate something 1934 * serious wrong and firmware having problem to recover 1935 * from it. Instead of keep trying which will fill the syslog 1936 * and hang the system, let's just stop it 1937 */ 1938 reload_jiffies = jiffies; 1939 reload_msec = jiffies_to_msecs((long) reload_jiffies - 1940 (long) priv->reload_jiffies); 1941 priv->reload_jiffies = reload_jiffies; 1942 if (reload_msec <= IWL_MIN_RELOAD_DURATION) { 1943 priv->reload_count++; 1944 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { 1945 IWL_ERR(priv, "BUG_ON, Stop restarting\n"); 1946 return; 1947 } 1948 } else 1949 priv->reload_count = 0; 1950 } 1951 1952 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { 1953 if (iwlwifi_mod_params.fw_restart) { 1954 IWL_DEBUG_FW(priv, 1955 "Restarting adapter due to uCode error.\n"); 1956 queue_work(priv->workqueue, &priv->restart); 1957 } else 1958 IWL_DEBUG_FW(priv, 1959 "Detected FW error, but not restarting\n"); 1960 } 1961 } 1962 1963 static void iwl_nic_error(struct iwl_op_mode *op_mode) 1964 { 1965 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1966 1967 IWL_ERR(priv, "Loaded firmware version: %s\n", 1968 priv->fw->fw_version); 1969 1970 iwl_dump_nic_error_log(priv); 1971 iwl_dump_nic_event_log(priv, false, NULL); 1972 1973 iwlagn_fw_error(priv, false); 1974 } 1975 1976 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode) 1977 { 1978 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1979 1980 if (!iwl_check_for_ct_kill(priv)) { 1981 IWL_ERR(priv, "Restarting adapter queue is full\n"); 1982 iwlagn_fw_error(priv, false); 1983 } 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_DASH | 1995 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP, 1996 (CSR_HW_REV_STEP(priv->trans->hw_rev) << 1997 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) | 1998 (CSR_HW_REV_DASH(priv->trans->hw_rev) << 1999 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH)); 2000 2001 /* write radio config values to register */ 2002 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) { 2003 u32 reg_val = 2004 priv->nvm_data->radio_cfg_type << 2005 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | 2006 priv->nvm_data->radio_cfg_step << 2007 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | 2008 priv->nvm_data->radio_cfg_dash << 2009 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 2010 2011 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 2012 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 2013 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 2014 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, 2015 reg_val); 2016 2017 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", 2018 priv->nvm_data->radio_cfg_type, 2019 priv->nvm_data->radio_cfg_step, 2020 priv->nvm_data->radio_cfg_dash); 2021 } else { 2022 WARN_ON(1); 2023 } 2024 2025 /* set CSR_HW_CONFIG_REG for uCode use */ 2026 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, 2027 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 2028 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); 2029 2030 /* W/A : NIC is stuck in a reset state after Early PCIe power off 2031 * (PCIe power is lost before PERST# is asserted), 2032 * causing ME FW to lose ownership and not being able to obtain it back. 2033 */ 2034 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, 2035 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 2036 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 2037 2038 if (priv->lib->nic_config) 2039 priv->lib->nic_config(priv); 2040 } 2041 2042 static void iwl_wimax_active(struct iwl_op_mode *op_mode) 2043 { 2044 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2045 2046 clear_bit(STATUS_READY, &priv->status); 2047 IWL_ERR(priv, "RF is used by WiMAX\n"); 2048 } 2049 2050 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 2051 { 2052 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2053 int mq = priv->queue_to_mac80211[queue]; 2054 2055 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2056 return; 2057 2058 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) { 2059 IWL_DEBUG_TX_QUEUES(priv, 2060 "queue %d (mac80211 %d) already stopped\n", 2061 queue, mq); 2062 return; 2063 } 2064 2065 set_bit(mq, &priv->transport_queue_stop); 2066 ieee80211_stop_queue(priv->hw, mq); 2067 } 2068 2069 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 2070 { 2071 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2072 int mq = priv->queue_to_mac80211[queue]; 2073 2074 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 2075 return; 2076 2077 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { 2078 IWL_DEBUG_TX_QUEUES(priv, 2079 "queue %d (mac80211 %d) already awake\n", 2080 queue, mq); 2081 return; 2082 } 2083 2084 clear_bit(mq, &priv->transport_queue_stop); 2085 2086 if (!priv->passive_no_rx) 2087 ieee80211_wake_queue(priv->hw, mq); 2088 } 2089 2090 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) 2091 { 2092 int mq; 2093 2094 if (!priv->passive_no_rx) 2095 return; 2096 2097 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { 2098 if (!test_bit(mq, &priv->transport_queue_stop)) { 2099 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq); 2100 ieee80211_wake_queue(priv->hw, mq); 2101 } else { 2102 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq); 2103 } 2104 } 2105 2106 priv->passive_no_rx = false; 2107 } 2108 2109 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 2110 { 2111 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2112 struct ieee80211_tx_info *info; 2113 2114 info = IEEE80211_SKB_CB(skb); 2115 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); 2116 ieee80211_free_txskb(priv->hw, skb); 2117 } 2118 2119 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 2120 { 2121 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2122 2123 if (state) 2124 set_bit(STATUS_RF_KILL_HW, &priv->status); 2125 else 2126 clear_bit(STATUS_RF_KILL_HW, &priv->status); 2127 2128 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); 2129 2130 return false; 2131 } 2132 2133 static const struct iwl_op_mode_ops iwl_dvm_ops = { 2134 .start = iwl_op_mode_dvm_start, 2135 .stop = iwl_op_mode_dvm_stop, 2136 .rx = iwl_rx_dispatch, 2137 .queue_full = iwl_stop_sw_queue, 2138 .queue_not_full = iwl_wake_sw_queue, 2139 .hw_rf_kill = iwl_set_hw_rfkill_state, 2140 .free_skb = iwl_free_skb, 2141 .nic_error = iwl_nic_error, 2142 .cmd_queue_full = iwl_cmd_queue_full, 2143 .nic_config = iwl_nic_config, 2144 .wimax_active = iwl_wimax_active, 2145 }; 2146 2147 /***************************************************************************** 2148 * 2149 * driver and module entry point 2150 * 2151 *****************************************************************************/ 2152 static int __init iwl_init(void) 2153 { 2154 2155 int ret; 2156 2157 ret = iwlagn_rate_control_register(); 2158 if (ret) { 2159 pr_err("Unable to register rate control algorithm: %d\n", ret); 2160 return ret; 2161 } 2162 2163 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); 2164 if (ret) { 2165 pr_err("Unable to register op_mode: %d\n", ret); 2166 iwlagn_rate_control_unregister(); 2167 } 2168 2169 return ret; 2170 } 2171 module_init(iwl_init); 2172 2173 static void __exit iwl_exit(void) 2174 { 2175 iwl_opmode_deregister("iwldvm"); 2176 iwlagn_rate_control_unregister(); 2177 } 2178 module_exit(iwl_exit); 2179