1/****************************************************************************** 2 * 3 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. 4 * 5 * Portions of this file are derived from the ipw3945 project, as well 6 * as portions of the ieee80211 subsystem header files. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of version 2 of the GNU General Public License as 10 * published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along with 18 * this program; if not, write to the Free Software Foundation, Inc., 19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA 20 * 21 * The full GNU General Public License is included in this distribution in the 22 * file called LICENSE. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <ilw@linux.intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 *****************************************************************************/ 29 30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 31 32#include <linux/kernel.h> 33#include <linux/module.h> 34#include <linux/init.h> 35#include <linux/slab.h> 36#include <linux/delay.h> 37#include <linux/sched.h> 38#include <linux/skbuff.h> 39#include <linux/netdevice.h> 40#include <linux/etherdevice.h> 41#include <linux/if_arp.h> 42 43#include <net/mac80211.h> 44 45#include <asm/div64.h> 46 47#include "iwl-eeprom-read.h" 48#include "iwl-eeprom-parse.h" 49#include "iwl-io.h" 50#include "iwl-trans.h" 51#include "iwl-op-mode.h" 52#include "iwl-drv.h" 53#include "iwl-modparams.h" 54#include "iwl-prph.h" 55 56#include "dev.h" 57#include "calib.h" 58#include "agn.h" 59 60 61/****************************************************************************** 62 * 63 * module boiler plate 64 * 65 ******************************************************************************/ 66 67#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" 68MODULE_DESCRIPTION(DRV_DESCRIPTION); 69MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 70MODULE_LICENSE("GPL"); 71 72static const struct iwl_op_mode_ops iwl_dvm_ops; 73 74void iwl_update_chain_flags(struct iwl_priv *priv) 75{ 76 struct iwl_rxon_context *ctx; 77 78 for_each_context(priv, ctx) { 79 iwlagn_set_rxon_chain(priv, ctx); 80 if (ctx->active.rx_chain != ctx->staging.rx_chain) 81 iwlagn_commit_rxon(priv, ctx); 82 } 83} 84 85/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ 86static void iwl_set_beacon_tim(struct iwl_priv *priv, 87 struct iwl_tx_beacon_cmd *tx_beacon_cmd, 88 u8 *beacon, u32 frame_size) 89{ 90 u16 tim_idx; 91 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 92 93 /* 94 * The index is relative to frame start but we start looking at the 95 * variable-length part of the beacon. 96 */ 97 tim_idx = mgmt->u.beacon.variable - beacon; 98 99 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 100 while ((tim_idx < (frame_size - 2)) && 101 (beacon[tim_idx] != WLAN_EID_TIM)) 102 tim_idx += beacon[tim_idx+1] + 2; 103 104 /* If TIM field was found, set variables */ 105 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 106 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); 107 tx_beacon_cmd->tim_size = beacon[tim_idx+1]; 108 } else 109 IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); 110} 111 112int iwlagn_send_beacon_cmd(struct iwl_priv *priv) 113{ 114 struct iwl_tx_beacon_cmd *tx_beacon_cmd; 115 struct iwl_host_cmd cmd = { 116 .id = REPLY_TX_BEACON, 117 }; 118 struct ieee80211_tx_info *info; 119 u32 frame_size; 120 u32 rate_flags; 121 u32 rate; 122 123 /* 124 * We have to set up the TX command, the TX Beacon command, and the 125 * beacon contents. 126 */ 127 128 lockdep_assert_held(&priv->mutex); 129 130 if (!priv->beacon_ctx) { 131 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); 132 return 0; 133 } 134 135 if (WARN_ON(!priv->beacon_skb)) 136 return -EINVAL; 137 138 /* Allocate beacon command */ 139 if (!priv->beacon_cmd) 140 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); 141 tx_beacon_cmd = priv->beacon_cmd; 142 if (!tx_beacon_cmd) 143 return -ENOMEM; 144 145 frame_size = priv->beacon_skb->len; 146 147 /* Set up TX command fields */ 148 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); 149 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; 150 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; 151 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | 152 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; 153 154 /* Set up TX beacon command fields */ 155 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, 156 frame_size); 157 158 /* Set up packet rate and flags */ 159 info = IEEE80211_SKB_CB(priv->beacon_skb); 160 161 /* 162 * Let's set up the rate at least somewhat correctly; 163 * it will currently not actually be used by the uCode, 164 * it uses the broadcast station's rate instead. 165 */ 166 if (info->control.rates[0].idx < 0 || 167 info->control.rates[0].flags & IEEE80211_TX_RC_MCS) 168 rate = 0; 169 else 170 rate = info->control.rates[0].idx; 171 172 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, 173 priv->nvm_data->valid_tx_ant); 174 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); 175 176 /* In mac80211, rates for 5 GHz start at 0 */ 177 if (info->band == IEEE80211_BAND_5GHZ) 178 rate += IWL_FIRST_OFDM_RATE; 179 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) 180 rate_flags |= RATE_MCS_CCK_MSK; 181 182 tx_beacon_cmd->tx.rate_n_flags = 183 iwl_hw_set_rate_n_flags(rate, rate_flags); 184 185 /* Submit command */ 186 cmd.len[0] = sizeof(*tx_beacon_cmd); 187 cmd.data[0] = tx_beacon_cmd; 188 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 189 cmd.len[1] = frame_size; 190 cmd.data[1] = priv->beacon_skb->data; 191 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; 192 193 return iwl_dvm_send_cmd(priv, &cmd); 194} 195 196static void iwl_bg_beacon_update(struct work_struct *work) 197{ 198 struct iwl_priv *priv = 199 container_of(work, struct iwl_priv, beacon_update); 200 struct sk_buff *beacon; 201 202 mutex_lock(&priv->mutex); 203 if (!priv->beacon_ctx) { 204 IWL_ERR(priv, "updating beacon w/o beacon context!\n"); 205 goto out; 206 } 207 208 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { 209 /* 210 * The ucode will send beacon notifications even in 211 * IBSS mode, but we don't want to process them. But 212 * we need to defer the type check to here due to 213 * requiring locking around the beacon_ctx access. 214 */ 215 goto out; 216 } 217 218 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ 219 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); 220 if (!beacon) { 221 IWL_ERR(priv, "update beacon failed -- keeping old\n"); 222 goto out; 223 } 224 225 /* new beacon skb is allocated every time; dispose previous.*/ 226 dev_kfree_skb(priv->beacon_skb); 227 228 priv->beacon_skb = beacon; 229 230 iwlagn_send_beacon_cmd(priv); 231 out: 232 mutex_unlock(&priv->mutex); 233} 234 235static void iwl_bg_bt_runtime_config(struct work_struct *work) 236{ 237 struct iwl_priv *priv = 238 container_of(work, struct iwl_priv, bt_runtime_config); 239 240 mutex_lock(&priv->mutex); 241 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 242 goto out; 243 244 /* dont send host command if rf-kill is on */ 245 if (!iwl_is_ready_rf(priv)) 246 goto out; 247 248 iwlagn_send_advance_bt_config(priv); 249out: 250 mutex_unlock(&priv->mutex); 251} 252 253static void iwl_bg_bt_full_concurrency(struct work_struct *work) 254{ 255 struct iwl_priv *priv = 256 container_of(work, struct iwl_priv, bt_full_concurrency); 257 struct iwl_rxon_context *ctx; 258 259 mutex_lock(&priv->mutex); 260 261 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 262 goto out; 263 264 /* dont send host command if rf-kill is on */ 265 if (!iwl_is_ready_rf(priv)) 266 goto out; 267 268 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", 269 priv->bt_full_concurrent ? 270 "full concurrency" : "3-wire"); 271 272 /* 273 * LQ & RXON updated cmds must be sent before BT Config cmd 274 * to avoid 3-wire collisions 275 */ 276 for_each_context(priv, ctx) { 277 iwlagn_set_rxon_chain(priv, ctx); 278 iwlagn_commit_rxon(priv, ctx); 279 } 280 281 iwlagn_send_advance_bt_config(priv); 282out: 283 mutex_unlock(&priv->mutex); 284} 285 286int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) 287{ 288 struct iwl_statistics_cmd statistics_cmd = { 289 .configuration_flags = 290 clear ? IWL_STATS_CONF_CLEAR_STATS : 0, 291 }; 292 293 if (flags & CMD_ASYNC) 294 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 295 CMD_ASYNC, 296 sizeof(struct iwl_statistics_cmd), 297 &statistics_cmd); 298 else 299 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0, 300 sizeof(struct iwl_statistics_cmd), 301 &statistics_cmd); 302} 303 304/** 305 * iwl_bg_statistics_periodic - Timer callback to queue statistics 306 * 307 * This callback is provided in order to send a statistics request. 308 * 309 * This timer function is continually reset to execute within 310 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION 311 * was received. We need to ensure we receive the statistics in order 312 * to update the temperature used for calibrating the TXPOWER. 313 */ 314static void iwl_bg_statistics_periodic(unsigned long data) 315{ 316 struct iwl_priv *priv = (struct iwl_priv *)data; 317 318 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 319 return; 320 321 /* dont send host command if rf-kill is on */ 322 if (!iwl_is_ready_rf(priv)) 323 return; 324 325 iwl_send_statistics_request(priv, CMD_ASYNC, false); 326} 327 328 329static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, 330 u32 start_idx, u32 num_events, 331 u32 capacity, u32 mode) 332{ 333 u32 i; 334 u32 ptr; /* SRAM byte address of log data */ 335 u32 ev, time, data; /* event log data */ 336 unsigned long reg_flags; 337 338 if (mode == 0) 339 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); 340 else 341 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); 342 343 /* Make sure device is powered up for SRAM reads */ 344 if (!iwl_trans_grab_nic_access(priv->trans, false, ®_flags)) 345 return; 346 347 /* Set starting address; reads will auto-increment */ 348 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); 349 350 /* 351 * Refuse to read more than would have fit into the log from 352 * the current start_idx. This used to happen due to the race 353 * described below, but now WARN because the code below should 354 * prevent it from happening here. 355 */ 356 if (WARN_ON(num_events > capacity - start_idx)) 357 num_events = capacity - start_idx; 358 359 /* 360 * "time" is actually "data" for mode 0 (no timestamp). 361 * place event id # at far right for easier visual parsing. 362 */ 363 for (i = 0; i < num_events; i++) { 364 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 365 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 366 if (mode == 0) { 367 trace_iwlwifi_dev_ucode_cont_event( 368 priv->trans->dev, 0, time, ev); 369 } else { 370 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 371 trace_iwlwifi_dev_ucode_cont_event( 372 priv->trans->dev, time, data, ev); 373 } 374 } 375 /* Allow device to power down */ 376 iwl_trans_release_nic_access(priv->trans, ®_flags); 377} 378 379static void iwl_continuous_event_trace(struct iwl_priv *priv) 380{ 381 u32 capacity; /* event log capacity in # entries */ 382 struct { 383 u32 capacity; 384 u32 mode; 385 u32 wrap_counter; 386 u32 write_counter; 387 } __packed read; 388 u32 base; /* SRAM byte address of event log header */ 389 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 390 u32 num_wraps; /* # times uCode wrapped to top of log */ 391 u32 next_entry; /* index of next entry to be written by uCode */ 392 393 base = priv->device_pointers.log_event_table; 394 if (iwlagn_hw_valid_rtc_data_addr(base)) { 395 iwl_trans_read_mem_bytes(priv->trans, base, 396 &read, sizeof(read)); 397 capacity = read.capacity; 398 mode = read.mode; 399 num_wraps = read.wrap_counter; 400 next_entry = read.write_counter; 401 } else 402 return; 403 404 /* 405 * Unfortunately, the uCode doesn't use temporary variables. 406 * Therefore, it can happen that we read next_entry == capacity, 407 * which really means next_entry == 0. 408 */ 409 if (unlikely(next_entry == capacity)) 410 next_entry = 0; 411 /* 412 * Additionally, the uCode increases the write pointer before 413 * the wraps counter, so if the write pointer is smaller than 414 * the old write pointer (wrap occurred) but we read that no 415 * wrap occurred, we actually read between the next_entry and 416 * num_wraps update (this does happen in practice!!) -- take 417 * that into account by increasing num_wraps. 418 */ 419 if (unlikely(next_entry < priv->event_log.next_entry && 420 num_wraps == priv->event_log.num_wraps)) 421 num_wraps++; 422 423 if (num_wraps == priv->event_log.num_wraps) { 424 iwl_print_cont_event_trace( 425 priv, base, priv->event_log.next_entry, 426 next_entry - priv->event_log.next_entry, 427 capacity, mode); 428 429 priv->event_log.non_wraps_count++; 430 } else { 431 if (num_wraps - priv->event_log.num_wraps > 1) 432 priv->event_log.wraps_more_count++; 433 else 434 priv->event_log.wraps_once_count++; 435 436 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, 437 num_wraps - priv->event_log.num_wraps, 438 next_entry, priv->event_log.next_entry); 439 440 if (next_entry < priv->event_log.next_entry) { 441 iwl_print_cont_event_trace( 442 priv, base, priv->event_log.next_entry, 443 capacity - priv->event_log.next_entry, 444 capacity, mode); 445 446 iwl_print_cont_event_trace( 447 priv, base, 0, next_entry, capacity, mode); 448 } else { 449 iwl_print_cont_event_trace( 450 priv, base, next_entry, 451 capacity - next_entry, 452 capacity, mode); 453 454 iwl_print_cont_event_trace( 455 priv, base, 0, next_entry, capacity, mode); 456 } 457 } 458 459 priv->event_log.num_wraps = num_wraps; 460 priv->event_log.next_entry = next_entry; 461} 462 463/** 464 * iwl_bg_ucode_trace - Timer callback to log ucode event 465 * 466 * The timer is continually set to execute every 467 * UCODE_TRACE_PERIOD milliseconds after the last timer expired 468 * this function is to perform continuous uCode event logging operation 469 * if enabled 470 */ 471static void iwl_bg_ucode_trace(unsigned long data) 472{ 473 struct iwl_priv *priv = (struct iwl_priv *)data; 474 475 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 476 return; 477 478 if (priv->event_log.ucode_trace) { 479 iwl_continuous_event_trace(priv); 480 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ 481 mod_timer(&priv->ucode_trace, 482 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); 483 } 484} 485 486static void iwl_bg_tx_flush(struct work_struct *work) 487{ 488 struct iwl_priv *priv = 489 container_of(work, struct iwl_priv, tx_flush); 490 491 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 492 return; 493 494 /* do nothing if rf-kill is on */ 495 if (!iwl_is_ready_rf(priv)) 496 return; 497 498 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); 499 iwlagn_dev_txfifo_flush(priv); 500} 501 502/* 503 * queue/FIFO/AC mapping definitions 504 */ 505 506static const u8 iwlagn_bss_ac_to_fifo[] = { 507 IWL_TX_FIFO_VO, 508 IWL_TX_FIFO_VI, 509 IWL_TX_FIFO_BE, 510 IWL_TX_FIFO_BK, 511}; 512 513static const u8 iwlagn_bss_ac_to_queue[] = { 514 0, 1, 2, 3, 515}; 516 517static const u8 iwlagn_pan_ac_to_fifo[] = { 518 IWL_TX_FIFO_VO_IPAN, 519 IWL_TX_FIFO_VI_IPAN, 520 IWL_TX_FIFO_BE_IPAN, 521 IWL_TX_FIFO_BK_IPAN, 522}; 523 524static const u8 iwlagn_pan_ac_to_queue[] = { 525 7, 6, 5, 4, 526}; 527 528static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) 529{ 530 int i; 531 532 /* 533 * The default context is always valid, 534 * the PAN context depends on uCode. 535 */ 536 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); 537 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) 538 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 539 540 for (i = 0; i < NUM_IWL_RXON_CTX; i++) 541 priv->contexts[i].ctxid = i; 542 543 priv->contexts[IWL_RXON_CTX_BSS].always_active = true; 544 priv->contexts[IWL_RXON_CTX_BSS].is_active = true; 545 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; 546 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; 547 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; 548 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; 549 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; 550 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; 551 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 552 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = 553 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR); 554 priv->contexts[IWL_RXON_CTX_BSS].interface_modes = 555 BIT(NL80211_IFTYPE_STATION); 556 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; 557 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; 558 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; 559 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; 560 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, 561 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); 562 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, 563 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); 564 565 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; 566 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = 567 REPLY_WIPAN_RXON_TIMING; 568 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = 569 REPLY_WIPAN_RXON_ASSOC; 570 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; 571 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; 572 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; 573 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; 574 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; 575 priv->contexts[IWL_RXON_CTX_PAN].interface_modes = 576 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); 577 578 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; 579 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; 580 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; 581 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, 582 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); 583 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, 584 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); 585 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; 586 587 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); 588} 589 590static void iwl_rf_kill_ct_config(struct iwl_priv *priv) 591{ 592 struct iwl_ct_kill_config cmd; 593 struct iwl_ct_kill_throttling_config adv_cmd; 594 int ret = 0; 595 596 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 597 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); 598 599 priv->thermal_throttle.ct_kill_toggle = false; 600 601 if (priv->lib->support_ct_kill_exit) { 602 adv_cmd.critical_temperature_enter = 603 cpu_to_le32(priv->hw_params.ct_kill_threshold); 604 adv_cmd.critical_temperature_exit = 605 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); 606 607 ret = iwl_dvm_send_cmd_pdu(priv, 608 REPLY_CT_KILL_CONFIG_CMD, 609 0, sizeof(adv_cmd), &adv_cmd); 610 if (ret) 611 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 612 else 613 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 614 "succeeded, critical temperature enter is %d," 615 "exit is %d\n", 616 priv->hw_params.ct_kill_threshold, 617 priv->hw_params.ct_kill_exit_threshold); 618 } else { 619 cmd.critical_temperature_R = 620 cpu_to_le32(priv->hw_params.ct_kill_threshold); 621 622 ret = iwl_dvm_send_cmd_pdu(priv, 623 REPLY_CT_KILL_CONFIG_CMD, 624 0, sizeof(cmd), &cmd); 625 if (ret) 626 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 627 else 628 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 629 "succeeded, " 630 "critical temperature is %d\n", 631 priv->hw_params.ct_kill_threshold); 632 } 633} 634 635static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) 636{ 637 struct iwl_calib_cfg_cmd calib_cfg_cmd; 638 struct iwl_host_cmd cmd = { 639 .id = CALIBRATION_CFG_CMD, 640 .len = { sizeof(struct iwl_calib_cfg_cmd), }, 641 .data = { &calib_cfg_cmd, }, 642 }; 643 644 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); 645 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; 646 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); 647 648 return iwl_dvm_send_cmd(priv, &cmd); 649} 650 651 652static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) 653{ 654 struct iwl_tx_ant_config_cmd tx_ant_cmd = { 655 .valid = cpu_to_le32(valid_tx_ant), 656 }; 657 658 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { 659 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); 660 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0, 661 sizeof(struct iwl_tx_ant_config_cmd), 662 &tx_ant_cmd); 663 } else { 664 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); 665 return -EOPNOTSUPP; 666 } 667} 668 669static void iwl_send_bt_config(struct iwl_priv *priv) 670{ 671 struct iwl_bt_cmd bt_cmd = { 672 .lead_time = BT_LEAD_TIME_DEF, 673 .max_kill = BT_MAX_KILL_DEF, 674 .kill_ack_mask = 0, 675 .kill_cts_mask = 0, 676 }; 677 678 if (!iwlwifi_mod_params.bt_coex_active) 679 bt_cmd.flags = BT_COEX_DISABLE; 680 else 681 bt_cmd.flags = BT_COEX_ENABLE; 682 683 priv->bt_enable_flag = bt_cmd.flags; 684 IWL_DEBUG_INFO(priv, "BT coex %s\n", 685 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); 686 687 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 688 0, sizeof(struct iwl_bt_cmd), &bt_cmd)) 689 IWL_ERR(priv, "failed to send BT Coex Config\n"); 690} 691 692/** 693 * iwl_alive_start - called after REPLY_ALIVE notification received 694 * from protocol/runtime uCode (initialization uCode's 695 * Alive gets handled by iwl_init_alive_start()). 696 */ 697int iwl_alive_start(struct iwl_priv *priv) 698{ 699 int ret = 0; 700 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 701 702 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); 703 704 /* After the ALIVE response, we can send host commands to the uCode */ 705 set_bit(STATUS_ALIVE, &priv->status); 706 707 if (iwl_is_rfkill(priv)) 708 return -ERFKILL; 709 710 if (priv->event_log.ucode_trace) { 711 /* start collecting data now */ 712 mod_timer(&priv->ucode_trace, jiffies); 713 } 714 715 /* download priority table before any calibration request */ 716 if (priv->lib->bt_params && 717 priv->lib->bt_params->advanced_bt_coexist) { 718 /* Configure Bluetooth device coexistence support */ 719 if (priv->lib->bt_params->bt_sco_disable) 720 priv->bt_enable_pspoll = false; 721 else 722 priv->bt_enable_pspoll = true; 723 724 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 725 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 726 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 727 iwlagn_send_advance_bt_config(priv); 728 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; 729 priv->cur_rssi_ctx = NULL; 730 731 iwl_send_prio_tbl(priv); 732 733 /* FIXME: w/a to force change uCode BT state machine */ 734 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, 735 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 736 if (ret) 737 return ret; 738 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, 739 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 740 if (ret) 741 return ret; 742 } else if (priv->lib->bt_params) { 743 /* 744 * default is 2-wire BT coexexistence support 745 */ 746 iwl_send_bt_config(priv); 747 } 748 749 /* 750 * Perform runtime calibrations, including DC calibration. 751 */ 752 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); 753 754 ieee80211_wake_queues(priv->hw); 755 756 /* Configure Tx antenna selection based on H/W config */ 757 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant); 758 759 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { 760 struct iwl_rxon_cmd *active_rxon = 761 (struct iwl_rxon_cmd *)&ctx->active; 762 /* apply any changes in staging */ 763 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; 764 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; 765 } else { 766 struct iwl_rxon_context *tmp; 767 /* Initialize our rx_config data */ 768 for_each_context(priv, tmp) 769 iwl_connection_init_rx_config(priv, tmp); 770 771 iwlagn_set_rxon_chain(priv, ctx); 772 } 773 774 if (!priv->wowlan) { 775 /* WoWLAN ucode will not reply in the same way, skip it */ 776 iwl_reset_run_time_calib(priv); 777 } 778 779 set_bit(STATUS_READY, &priv->status); 780 781 /* Configure the adapter for unassociated operation */ 782 ret = iwlagn_commit_rxon(priv, ctx); 783 if (ret) 784 return ret; 785 786 /* At this point, the NIC is initialized and operational */ 787 iwl_rf_kill_ct_config(priv); 788 789 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); 790 791 return iwl_power_update_mode(priv, true); 792} 793 794/** 795 * iwl_clear_driver_stations - clear knowledge of all stations from driver 796 * @priv: iwl priv struct 797 * 798 * This is called during iwl_down() to make sure that in the case 799 * we're coming there from a hardware restart mac80211 will be 800 * able to reconfigure stations -- if we're getting there in the 801 * normal down flow then the stations will already be cleared. 802 */ 803static void iwl_clear_driver_stations(struct iwl_priv *priv) 804{ 805 struct iwl_rxon_context *ctx; 806 807 spin_lock_bh(&priv->sta_lock); 808 memset(priv->stations, 0, sizeof(priv->stations)); 809 priv->num_stations = 0; 810 811 priv->ucode_key_table = 0; 812 813 for_each_context(priv, ctx) { 814 /* 815 * Remove all key information that is not stored as part 816 * of station information since mac80211 may not have had 817 * a chance to remove all the keys. When device is 818 * reconfigured by mac80211 after an error all keys will 819 * be reconfigured. 820 */ 821 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 822 ctx->key_mapping_keys = 0; 823 } 824 825 spin_unlock_bh(&priv->sta_lock); 826} 827 828void iwl_down(struct iwl_priv *priv) 829{ 830 int exit_pending; 831 832 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); 833 834 lockdep_assert_held(&priv->mutex); 835 836 iwl_scan_cancel_timeout(priv, 200); 837 838 exit_pending = 839 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); 840 841 iwl_clear_ucode_stations(priv, NULL); 842 iwl_dealloc_bcast_stations(priv); 843 iwl_clear_driver_stations(priv); 844 845 /* reset BT coex data */ 846 priv->bt_status = 0; 847 priv->cur_rssi_ctx = NULL; 848 priv->bt_is_sco = 0; 849 if (priv->lib->bt_params) 850 priv->bt_traffic_load = 851 priv->lib->bt_params->bt_init_traffic_load; 852 else 853 priv->bt_traffic_load = 0; 854 priv->bt_full_concurrent = false; 855 priv->bt_ci_compliance = 0; 856 857 /* Wipe out the EXIT_PENDING status bit if we are not actually 858 * exiting the module */ 859 if (!exit_pending) 860 clear_bit(STATUS_EXIT_PENDING, &priv->status); 861 862 if (priv->mac80211_registered) 863 ieee80211_stop_queues(priv->hw); 864 865 priv->ucode_loaded = false; 866 iwl_trans_stop_device(priv->trans); 867 868 /* Set num_aux_in_flight must be done after the transport is stopped */ 869 atomic_set(&priv->num_aux_in_flight, 0); 870 871 /* Clear out all status bits but a few that are stable across reset */ 872 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << 873 STATUS_RF_KILL_HW | 874 test_bit(STATUS_FW_ERROR, &priv->status) << 875 STATUS_FW_ERROR | 876 test_bit(STATUS_EXIT_PENDING, &priv->status) << 877 STATUS_EXIT_PENDING; 878 879 dev_kfree_skb(priv->beacon_skb); 880 priv->beacon_skb = NULL; 881} 882 883/***************************************************************************** 884 * 885 * Workqueue callbacks 886 * 887 *****************************************************************************/ 888 889static void iwl_bg_run_time_calib_work(struct work_struct *work) 890{ 891 struct iwl_priv *priv = container_of(work, struct iwl_priv, 892 run_time_calib_work); 893 894 mutex_lock(&priv->mutex); 895 896 if (test_bit(STATUS_EXIT_PENDING, &priv->status) || 897 test_bit(STATUS_SCANNING, &priv->status)) { 898 mutex_unlock(&priv->mutex); 899 return; 900 } 901 902 if (priv->start_calib) { 903 iwl_chain_noise_calibration(priv); 904 iwl_sensitivity_calibration(priv); 905 } 906 907 mutex_unlock(&priv->mutex); 908} 909 910void iwlagn_prepare_restart(struct iwl_priv *priv) 911{ 912 bool bt_full_concurrent; 913 u8 bt_ci_compliance; 914 u8 bt_load; 915 u8 bt_status; 916 bool bt_is_sco; 917 int i; 918 919 lockdep_assert_held(&priv->mutex); 920 921 priv->is_open = 0; 922 923 /* 924 * __iwl_down() will clear the BT status variables, 925 * which is correct, but when we restart we really 926 * want to keep them so restore them afterwards. 927 * 928 * The restart process will later pick them up and 929 * re-configure the hw when we reconfigure the BT 930 * command. 931 */ 932 bt_full_concurrent = priv->bt_full_concurrent; 933 bt_ci_compliance = priv->bt_ci_compliance; 934 bt_load = priv->bt_traffic_load; 935 bt_status = priv->bt_status; 936 bt_is_sco = priv->bt_is_sco; 937 938 iwl_down(priv); 939 940 priv->bt_full_concurrent = bt_full_concurrent; 941 priv->bt_ci_compliance = bt_ci_compliance; 942 priv->bt_traffic_load = bt_load; 943 priv->bt_status = bt_status; 944 priv->bt_is_sco = bt_is_sco; 945 946 /* reset aggregation queues */ 947 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) 948 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 949 /* and stop counts */ 950 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 951 atomic_set(&priv->queue_stop_count[i], 0); 952 953 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); 954} 955 956static void iwl_bg_restart(struct work_struct *data) 957{ 958 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); 959 960 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 961 return; 962 963 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { 964 mutex_lock(&priv->mutex); 965 iwlagn_prepare_restart(priv); 966 mutex_unlock(&priv->mutex); 967 iwl_cancel_deferred_work(priv); 968 if (priv->mac80211_registered) 969 ieee80211_restart_hw(priv->hw); 970 else 971 IWL_ERR(priv, 972 "Cannot request restart before registrating with mac80211\n"); 973 } else { 974 WARN_ON(1); 975 } 976} 977 978/***************************************************************************** 979 * 980 * driver setup and teardown 981 * 982 *****************************************************************************/ 983 984static void iwl_setup_deferred_work(struct iwl_priv *priv) 985{ 986 priv->workqueue = create_singlethread_workqueue(DRV_NAME); 987 988 INIT_WORK(&priv->restart, iwl_bg_restart); 989 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); 990 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); 991 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); 992 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); 993 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); 994 995 iwl_setup_scan_deferred_work(priv); 996 997 if (priv->lib->bt_params) 998 iwlagn_bt_setup_deferred_work(priv); 999 1000 setup_timer(&priv->statistics_periodic, iwl_bg_statistics_periodic, 1001 (unsigned long)priv); 1002 1003 setup_timer(&priv->ucode_trace, iwl_bg_ucode_trace, 1004 (unsigned long)priv); 1005} 1006 1007void iwl_cancel_deferred_work(struct iwl_priv *priv) 1008{ 1009 if (priv->lib->bt_params) 1010 iwlagn_bt_cancel_deferred_work(priv); 1011 1012 cancel_work_sync(&priv->run_time_calib_work); 1013 cancel_work_sync(&priv->beacon_update); 1014 1015 iwl_cancel_scan_deferred_work(priv); 1016 1017 cancel_work_sync(&priv->bt_full_concurrency); 1018 cancel_work_sync(&priv->bt_runtime_config); 1019 1020 del_timer_sync(&priv->statistics_periodic); 1021 del_timer_sync(&priv->ucode_trace); 1022} 1023 1024static int iwl_init_drv(struct iwl_priv *priv) 1025{ 1026 spin_lock_init(&priv->sta_lock); 1027 1028 mutex_init(&priv->mutex); 1029 1030 INIT_LIST_HEAD(&priv->calib_results); 1031 1032 priv->band = IEEE80211_BAND_2GHZ; 1033 1034 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold; 1035 1036 priv->iw_mode = NL80211_IFTYPE_STATION; 1037 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; 1038 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; 1039 priv->agg_tids_count = 0; 1040 1041 priv->rx_statistics_jiffies = jiffies; 1042 1043 /* Choose which receivers/antennas to use */ 1044 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); 1045 1046 iwl_init_scan_params(priv); 1047 1048 /* init bt coex */ 1049 if (priv->lib->bt_params && 1050 priv->lib->bt_params->advanced_bt_coexist) { 1051 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 1052 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 1053 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 1054 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; 1055 priv->bt_duration = BT_DURATION_LIMIT_DEF; 1056 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; 1057 } 1058 1059 return 0; 1060} 1061 1062static void iwl_uninit_drv(struct iwl_priv *priv) 1063{ 1064 kfree(priv->scan_cmd); 1065 kfree(priv->beacon_cmd); 1066 kfree(rcu_dereference_raw(priv->noa_data)); 1067 iwl_calib_free_results(priv); 1068#ifdef CONFIG_IWLWIFI_DEBUGFS 1069 kfree(priv->wowlan_sram); 1070#endif 1071} 1072 1073static void iwl_set_hw_params(struct iwl_priv *priv) 1074{ 1075 if (priv->cfg->ht_params) 1076 priv->hw_params.use_rts_for_aggregation = 1077 priv->cfg->ht_params->use_rts_for_aggregation; 1078 1079 /* Device-specific setup */ 1080 priv->lib->set_hw_params(priv); 1081} 1082 1083 1084 1085/* show what optional capabilities we have */ 1086static void iwl_option_config(struct iwl_priv *priv) 1087{ 1088#ifdef CONFIG_IWLWIFI_DEBUG 1089 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); 1090#else 1091 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); 1092#endif 1093 1094#ifdef CONFIG_IWLWIFI_DEBUGFS 1095 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); 1096#else 1097 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); 1098#endif 1099 1100#ifdef CONFIG_IWLWIFI_DEVICE_TRACING 1101 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); 1102#else 1103 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); 1104#endif 1105} 1106 1107static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) 1108{ 1109 struct iwl_nvm_data *data = priv->nvm_data; 1110 1111 if (data->sku_cap_11n_enable && 1112 !priv->cfg->ht_params) { 1113 IWL_ERR(priv, "Invalid 11n configuration\n"); 1114 return -EINVAL; 1115 } 1116 1117 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable && 1118 !data->sku_cap_band_52GHz_enable) { 1119 IWL_ERR(priv, "Invalid device sku\n"); 1120 return -EINVAL; 1121 } 1122 1123 IWL_DEBUG_INFO(priv, 1124 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n", 1125 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled", 1126 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled", 1127 data->sku_cap_11n_enable ? "" : "NOT", "enabled"); 1128 1129 priv->hw_params.tx_chains_num = 1130 num_of_ant(data->valid_tx_ant); 1131 if (priv->cfg->rx_with_siso_diversity) 1132 priv->hw_params.rx_chains_num = 1; 1133 else 1134 priv->hw_params.rx_chains_num = 1135 num_of_ant(data->valid_rx_ant); 1136 1137 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", 1138 data->valid_tx_ant, 1139 data->valid_rx_ant); 1140 1141 return 0; 1142} 1143 1144static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, 1145 const struct iwl_cfg *cfg, 1146 const struct iwl_fw *fw, 1147 struct dentry *dbgfs_dir) 1148{ 1149 struct iwl_priv *priv; 1150 struct ieee80211_hw *hw; 1151 struct iwl_op_mode *op_mode; 1152 u16 num_mac; 1153 u32 ucode_flags; 1154 struct iwl_trans_config trans_cfg = {}; 1155 static const u8 no_reclaim_cmds[] = { 1156 REPLY_RX_PHY_CMD, 1157 REPLY_RX_MPDU_CMD, 1158 REPLY_COMPRESSED_BA, 1159 STATISTICS_NOTIFICATION, 1160 REPLY_TX, 1161 }; 1162 int i; 1163 1164 /************************ 1165 * 1. Allocating HW data 1166 ************************/ 1167 hw = iwl_alloc_all(); 1168 if (!hw) { 1169 pr_err("%s: Cannot allocate network device\n", cfg->name); 1170 goto out; 1171 } 1172 1173 op_mode = hw->priv; 1174 op_mode->ops = &iwl_dvm_ops; 1175 priv = IWL_OP_MODE_GET_DVM(op_mode); 1176 priv->trans = trans; 1177 priv->dev = trans->dev; 1178 priv->cfg = cfg; 1179 priv->fw = fw; 1180 1181 switch (priv->cfg->device_family) { 1182 case IWL_DEVICE_FAMILY_1000: 1183 case IWL_DEVICE_FAMILY_100: 1184 priv->lib = &iwl_dvm_1000_cfg; 1185 break; 1186 case IWL_DEVICE_FAMILY_2000: 1187 priv->lib = &iwl_dvm_2000_cfg; 1188 break; 1189 case IWL_DEVICE_FAMILY_105: 1190 priv->lib = &iwl_dvm_105_cfg; 1191 break; 1192 case IWL_DEVICE_FAMILY_2030: 1193 case IWL_DEVICE_FAMILY_135: 1194 priv->lib = &iwl_dvm_2030_cfg; 1195 break; 1196 case IWL_DEVICE_FAMILY_5000: 1197 priv->lib = &iwl_dvm_5000_cfg; 1198 break; 1199 case IWL_DEVICE_FAMILY_5150: 1200 priv->lib = &iwl_dvm_5150_cfg; 1201 break; 1202 case IWL_DEVICE_FAMILY_6000: 1203 case IWL_DEVICE_FAMILY_6000i: 1204 priv->lib = &iwl_dvm_6000_cfg; 1205 break; 1206 case IWL_DEVICE_FAMILY_6005: 1207 priv->lib = &iwl_dvm_6005_cfg; 1208 break; 1209 case IWL_DEVICE_FAMILY_6050: 1210 case IWL_DEVICE_FAMILY_6150: 1211 priv->lib = &iwl_dvm_6050_cfg; 1212 break; 1213 case IWL_DEVICE_FAMILY_6030: 1214 priv->lib = &iwl_dvm_6030_cfg; 1215 break; 1216 default: 1217 break; 1218 } 1219 1220 if (WARN_ON(!priv->lib)) 1221 goto out_free_hw; 1222 1223 /* 1224 * Populate the state variables that the transport layer needs 1225 * to know about. 1226 */ 1227 trans_cfg.op_mode = op_mode; 1228 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 1229 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 1230 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; 1231 trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED; 1232 1233 trans_cfg.command_names = iwl_dvm_cmd_strings; 1234 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM; 1235 1236 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < 1237 priv->cfg->base_params->num_of_queues); 1238 1239 ucode_flags = fw->ucode_capa.flags; 1240 1241 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { 1242 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; 1243 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; 1244 } else { 1245 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1246 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1247 } 1248 1249 /* Configure transport layer */ 1250 iwl_trans_configure(priv->trans, &trans_cfg); 1251 1252 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 1253 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 1254 1255 /* At this point both hw and priv are allocated. */ 1256 1257 SET_IEEE80211_DEV(priv->hw, priv->trans->dev); 1258 1259 iwl_option_config(priv); 1260 1261 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); 1262 1263 /* is antenna coupling more than 35dB ? */ 1264 priv->bt_ant_couple_ok = 1265 (iwlwifi_mod_params.ant_coupling > 1266 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? 1267 true : false; 1268 1269 /* bt channel inhibition enabled*/ 1270 priv->bt_ch_announce = true; 1271 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", 1272 (priv->bt_ch_announce) ? "On" : "Off"); 1273 1274 /* these spin locks will be used in apm_ops.init and EEPROM access 1275 * we should init now 1276 */ 1277 spin_lock_init(&priv->statistics.lock); 1278 1279 /*********************** 1280 * 2. Read REV register 1281 ***********************/ 1282 IWL_INFO(priv, "Detected %s, REV=0x%X\n", 1283 priv->cfg->name, priv->trans->hw_rev); 1284 1285 if (iwl_trans_start_hw(priv->trans)) 1286 goto out_free_hw; 1287 1288 /* Read the EEPROM */ 1289 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob, 1290 &priv->eeprom_blob_size)) { 1291 IWL_ERR(priv, "Unable to init EEPROM\n"); 1292 goto out_free_hw; 1293 } 1294 1295 /* Reset chip to save power until we load uCode during "up". */ 1296 iwl_trans_stop_device(priv->trans); 1297 1298 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg, 1299 priv->eeprom_blob, 1300 priv->eeprom_blob_size); 1301 if (!priv->nvm_data) 1302 goto out_free_eeprom_blob; 1303 1304 if (iwl_nvm_check_version(priv->nvm_data, priv->trans)) 1305 goto out_free_eeprom; 1306 1307 if (iwl_eeprom_init_hw_params(priv)) 1308 goto out_free_eeprom; 1309 1310 /* extract MAC Address */ 1311 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN); 1312 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); 1313 priv->hw->wiphy->addresses = priv->addresses; 1314 priv->hw->wiphy->n_addresses = 1; 1315 num_mac = priv->nvm_data->n_hw_addrs; 1316 if (num_mac > 1) { 1317 memcpy(priv->addresses[1].addr, priv->addresses[0].addr, 1318 ETH_ALEN); 1319 priv->addresses[1].addr[5]++; 1320 priv->hw->wiphy->n_addresses++; 1321 } 1322 1323 /************************ 1324 * 4. Setup HW constants 1325 ************************/ 1326 iwl_set_hw_params(priv); 1327 1328 if (!(priv->nvm_data->sku_cap_ipan_enable)) { 1329 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n"); 1330 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; 1331 /* 1332 * if not PAN, then don't support P2P -- might be a uCode 1333 * packaging bug or due to the eeprom check above 1334 */ 1335 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1336 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1337 1338 /* Configure transport layer again*/ 1339 iwl_trans_configure(priv->trans, &trans_cfg); 1340 } 1341 1342 /******************* 1343 * 5. Setup priv 1344 *******************/ 1345 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { 1346 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1347 if (i < IWLAGN_FIRST_AMPDU_QUEUE && 1348 i != IWL_DEFAULT_CMD_QUEUE_NUM && 1349 i != IWL_IPAN_CMD_QUEUE_NUM) 1350 priv->queue_to_mac80211[i] = i; 1351 atomic_set(&priv->queue_stop_count[i], 0); 1352 } 1353 1354 if (iwl_init_drv(priv)) 1355 goto out_free_eeprom; 1356 1357 /* At this point both hw and priv are initialized. */ 1358 1359 /******************** 1360 * 6. Setup services 1361 ********************/ 1362 iwl_setup_deferred_work(priv); 1363 iwl_setup_rx_handlers(priv); 1364 1365 iwl_power_initialize(priv); 1366 iwl_tt_initialize(priv); 1367 1368 snprintf(priv->hw->wiphy->fw_version, 1369 sizeof(priv->hw->wiphy->fw_version), 1370 "%s", fw->fw_version); 1371 1372 priv->new_scan_threshold_behaviour = 1373 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); 1374 1375 priv->phy_calib_chain_noise_reset_cmd = 1376 fw->ucode_capa.standard_phy_calibration_size; 1377 priv->phy_calib_chain_noise_gain_cmd = 1378 fw->ucode_capa.standard_phy_calibration_size + 1; 1379 1380 /* initialize all valid contexts */ 1381 iwl_init_context(priv, ucode_flags); 1382 1383 /************************************************** 1384 * This is still part of probe() in a sense... 1385 * 1386 * 7. Setup and register with mac80211 and debugfs 1387 **************************************************/ 1388 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa)) 1389 goto out_destroy_workqueue; 1390 1391 if (iwl_dbgfs_register(priv, dbgfs_dir)) 1392 goto out_mac80211_unregister; 1393 1394 return op_mode; 1395 1396out_mac80211_unregister: 1397 iwlagn_mac_unregister(priv); 1398out_destroy_workqueue: 1399 iwl_tt_exit(priv); 1400 iwl_cancel_deferred_work(priv); 1401 destroy_workqueue(priv->workqueue); 1402 priv->workqueue = NULL; 1403 iwl_uninit_drv(priv); 1404out_free_eeprom_blob: 1405 kfree(priv->eeprom_blob); 1406out_free_eeprom: 1407 iwl_free_nvm_data(priv->nvm_data); 1408out_free_hw: 1409 ieee80211_free_hw(priv->hw); 1410out: 1411 op_mode = NULL; 1412 return op_mode; 1413} 1414 1415static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) 1416{ 1417 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1418 1419 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); 1420 1421 iwlagn_mac_unregister(priv); 1422 1423 iwl_tt_exit(priv); 1424 1425 kfree(priv->eeprom_blob); 1426 iwl_free_nvm_data(priv->nvm_data); 1427 1428 /*netif_stop_queue(dev); */ 1429 flush_workqueue(priv->workqueue); 1430 1431 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes 1432 * priv->workqueue... so we can't take down the workqueue 1433 * until now... */ 1434 destroy_workqueue(priv->workqueue); 1435 priv->workqueue = NULL; 1436 1437 iwl_uninit_drv(priv); 1438 1439 dev_kfree_skb(priv->beacon_skb); 1440 1441 iwl_trans_op_mode_leave(priv->trans); 1442 ieee80211_free_hw(priv->hw); 1443} 1444 1445static const char * const desc_lookup_text[] = { 1446 "OK", 1447 "FAIL", 1448 "BAD_PARAM", 1449 "BAD_CHECKSUM", 1450 "NMI_INTERRUPT_WDG", 1451 "SYSASSERT", 1452 "FATAL_ERROR", 1453 "BAD_COMMAND", 1454 "HW_ERROR_TUNE_LOCK", 1455 "HW_ERROR_TEMPERATURE", 1456 "ILLEGAL_CHAN_FREQ", 1457 "VCC_NOT_STABLE", 1458 "FH_ERROR", 1459 "NMI_INTERRUPT_HOST", 1460 "NMI_INTERRUPT_ACTION_PT", 1461 "NMI_INTERRUPT_UNKNOWN", 1462 "UCODE_VERSION_MISMATCH", 1463 "HW_ERROR_ABS_LOCK", 1464 "HW_ERROR_CAL_LOCK_FAIL", 1465 "NMI_INTERRUPT_INST_ACTION_PT", 1466 "NMI_INTERRUPT_DATA_ACTION_PT", 1467 "NMI_TRM_HW_ER", 1468 "NMI_INTERRUPT_TRM", 1469 "NMI_INTERRUPT_BREAK_POINT", 1470 "DEBUG_0", 1471 "DEBUG_1", 1472 "DEBUG_2", 1473 "DEBUG_3", 1474}; 1475 1476static struct { char *name; u8 num; } advanced_lookup[] = { 1477 { "NMI_INTERRUPT_WDG", 0x34 }, 1478 { "SYSASSERT", 0x35 }, 1479 { "UCODE_VERSION_MISMATCH", 0x37 }, 1480 { "BAD_COMMAND", 0x38 }, 1481 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 1482 { "FATAL_ERROR", 0x3D }, 1483 { "NMI_TRM_HW_ERR", 0x46 }, 1484 { "NMI_INTERRUPT_TRM", 0x4C }, 1485 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 1486 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 1487 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 1488 { "NMI_INTERRUPT_HOST", 0x66 }, 1489 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 1490 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 1491 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 1492 { "ADVANCED_SYSASSERT", 0 }, 1493}; 1494 1495static const char *desc_lookup(u32 num) 1496{ 1497 int i; 1498 int max = ARRAY_SIZE(desc_lookup_text); 1499 1500 if (num < max) 1501 return desc_lookup_text[num]; 1502 1503 max = ARRAY_SIZE(advanced_lookup) - 1; 1504 for (i = 0; i < max; i++) { 1505 if (advanced_lookup[i].num == num) 1506 break; 1507 } 1508 return advanced_lookup[i].name; 1509} 1510 1511#define ERROR_START_OFFSET (1 * sizeof(u32)) 1512#define ERROR_ELEM_SIZE (7 * sizeof(u32)) 1513 1514static void iwl_dump_nic_error_log(struct iwl_priv *priv) 1515{ 1516 struct iwl_trans *trans = priv->trans; 1517 u32 base; 1518 struct iwl_error_event_table table; 1519 1520 base = priv->device_pointers.error_event_table; 1521 if (priv->cur_ucode == IWL_UCODE_INIT) { 1522 if (!base) 1523 base = priv->fw->init_errlog_ptr; 1524 } else { 1525 if (!base) 1526 base = priv->fw->inst_errlog_ptr; 1527 } 1528 1529 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1530 IWL_ERR(priv, 1531 "Not valid error log pointer 0x%08X for %s uCode\n", 1532 base, 1533 (priv->cur_ucode == IWL_UCODE_INIT) 1534 ? "Init" : "RT"); 1535 return; 1536 } 1537 1538 /*TODO: Update dbgfs with ISR error stats obtained below */ 1539 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 1540 1541 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 1542 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 1543 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 1544 priv->status, table.valid); 1545 } 1546 1547 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low, 1548 table.data1, table.data2, table.line, 1549 table.blink1, table.blink2, table.ilink1, 1550 table.ilink2, table.bcon_time, table.gp1, 1551 table.gp2, table.gp3, table.ucode_ver, 1552 table.hw_ver, 0, table.brd_ver); 1553 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, 1554 desc_lookup(table.error_id)); 1555 IWL_ERR(priv, "0x%08X | uPc\n", table.pc); 1556 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); 1557 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); 1558 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); 1559 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); 1560 IWL_ERR(priv, "0x%08X | data1\n", table.data1); 1561 IWL_ERR(priv, "0x%08X | data2\n", table.data2); 1562 IWL_ERR(priv, "0x%08X | line\n", table.line); 1563 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); 1564 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); 1565 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); 1566 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); 1567 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); 1568 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); 1569 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); 1570 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); 1571 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); 1572 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); 1573 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); 1574 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); 1575 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); 1576 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); 1577 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); 1578 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); 1579 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); 1580 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); 1581 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); 1582 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 1583 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 1584 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 1585 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); 1586 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); 1587} 1588 1589#define EVENT_START_OFFSET (4 * sizeof(u32)) 1590 1591/** 1592 * iwl_print_event_log - Dump error event log to syslog 1593 * 1594 */ 1595static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, 1596 u32 num_events, u32 mode, 1597 int pos, char **buf, size_t bufsz) 1598{ 1599 u32 i; 1600 u32 base; /* SRAM byte address of event log header */ 1601 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ 1602 u32 ptr; /* SRAM byte address of log data */ 1603 u32 ev, time, data; /* event log data */ 1604 unsigned long reg_flags; 1605 1606 struct iwl_trans *trans = priv->trans; 1607 1608 if (num_events == 0) 1609 return pos; 1610 1611 base = priv->device_pointers.log_event_table; 1612 if (priv->cur_ucode == IWL_UCODE_INIT) { 1613 if (!base) 1614 base = priv->fw->init_evtlog_ptr; 1615 } else { 1616 if (!base) 1617 base = priv->fw->inst_evtlog_ptr; 1618 } 1619 1620 if (mode == 0) 1621 event_size = 2 * sizeof(u32); 1622 else 1623 event_size = 3 * sizeof(u32); 1624 1625 ptr = base + EVENT_START_OFFSET + (start_idx * event_size); 1626 1627 /* Make sure device is powered up for SRAM reads */ 1628 if (!iwl_trans_grab_nic_access(trans, false, ®_flags)) 1629 return pos; 1630 1631 /* Set starting address; reads will auto-increment */ 1632 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); 1633 1634 /* "time" is actually "data" for mode 0 (no timestamp). 1635 * place event id # at far right for easier visual parsing. */ 1636 for (i = 0; i < num_events; i++) { 1637 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1638 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1639 if (mode == 0) { 1640 /* data, ev */ 1641 if (bufsz) { 1642 pos += scnprintf(*buf + pos, bufsz - pos, 1643 "EVT_LOG:0x%08x:%04u\n", 1644 time, ev); 1645 } else { 1646 trace_iwlwifi_dev_ucode_event(trans->dev, 0, 1647 time, ev); 1648 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", 1649 time, ev); 1650 } 1651 } else { 1652 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1653 if (bufsz) { 1654 pos += scnprintf(*buf + pos, bufsz - pos, 1655 "EVT_LOGT:%010u:0x%08x:%04u\n", 1656 time, data, ev); 1657 } else { 1658 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", 1659 time, data, ev); 1660 trace_iwlwifi_dev_ucode_event(trans->dev, time, 1661 data, ev); 1662 } 1663 } 1664 } 1665 1666 /* Allow device to power down */ 1667 iwl_trans_release_nic_access(trans, ®_flags); 1668 return pos; 1669} 1670 1671/** 1672 * iwl_print_last_event_logs - Dump the newest # of event log to syslog 1673 */ 1674static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, 1675 u32 num_wraps, u32 next_entry, 1676 u32 size, u32 mode, 1677 int pos, char **buf, size_t bufsz) 1678{ 1679 /* 1680 * display the newest DEFAULT_LOG_ENTRIES entries 1681 * i.e the entries just before the next ont that uCode would fill. 1682 */ 1683 if (num_wraps) { 1684 if (next_entry < size) { 1685 pos = iwl_print_event_log(priv, 1686 capacity - (size - next_entry), 1687 size - next_entry, mode, 1688 pos, buf, bufsz); 1689 pos = iwl_print_event_log(priv, 0, 1690 next_entry, mode, 1691 pos, buf, bufsz); 1692 } else 1693 pos = iwl_print_event_log(priv, next_entry - size, 1694 size, mode, pos, buf, bufsz); 1695 } else { 1696 if (next_entry < size) { 1697 pos = iwl_print_event_log(priv, 0, next_entry, 1698 mode, pos, buf, bufsz); 1699 } else { 1700 pos = iwl_print_event_log(priv, next_entry - size, 1701 size, mode, pos, buf, bufsz); 1702 } 1703 } 1704 return pos; 1705} 1706 1707#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) 1708 1709int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, 1710 char **buf) 1711{ 1712 u32 base; /* SRAM byte address of event log header */ 1713 u32 capacity; /* event log capacity in # entries */ 1714 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 1715 u32 num_wraps; /* # times uCode wrapped to top of log */ 1716 u32 next_entry; /* index of next entry to be written by uCode */ 1717 u32 size; /* # entries that we'll print */ 1718 u32 logsize; 1719 int pos = 0; 1720 size_t bufsz = 0; 1721 struct iwl_trans *trans = priv->trans; 1722 1723 base = priv->device_pointers.log_event_table; 1724 if (priv->cur_ucode == IWL_UCODE_INIT) { 1725 logsize = priv->fw->init_evtlog_size; 1726 if (!base) 1727 base = priv->fw->init_evtlog_ptr; 1728 } else { 1729 logsize = priv->fw->inst_evtlog_size; 1730 if (!base) 1731 base = priv->fw->inst_evtlog_ptr; 1732 } 1733 1734 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1735 IWL_ERR(priv, 1736 "Invalid event log pointer 0x%08X for %s uCode\n", 1737 base, 1738 (priv->cur_ucode == IWL_UCODE_INIT) 1739 ? "Init" : "RT"); 1740 return -EINVAL; 1741 } 1742 1743 /* event log header */ 1744 capacity = iwl_trans_read_mem32(trans, base); 1745 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32))); 1746 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32))); 1747 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32))); 1748 1749 if (capacity > logsize) { 1750 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " 1751 "entries\n", capacity, logsize); 1752 capacity = logsize; 1753 } 1754 1755 if (next_entry > logsize) { 1756 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", 1757 next_entry, logsize); 1758 next_entry = logsize; 1759 } 1760 1761 size = num_wraps ? capacity : next_entry; 1762 1763 /* bail out if nothing in log */ 1764 if (size == 0) { 1765 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); 1766 return pos; 1767 } 1768 1769 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log) 1770 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) 1771 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; 1772 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", 1773 size); 1774 1775#ifdef CONFIG_IWLWIFI_DEBUG 1776 if (buf) { 1777 if (full_log) 1778 bufsz = capacity * 48; 1779 else 1780 bufsz = size * 48; 1781 *buf = kmalloc(bufsz, GFP_KERNEL); 1782 if (!*buf) 1783 return -ENOMEM; 1784 } 1785 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) { 1786 /* 1787 * if uCode has wrapped back to top of log, 1788 * start at the oldest entry, 1789 * i.e the next one that uCode would fill. 1790 */ 1791 if (num_wraps) 1792 pos = iwl_print_event_log(priv, next_entry, 1793 capacity - next_entry, mode, 1794 pos, buf, bufsz); 1795 /* (then/else) start at top of log */ 1796 pos = iwl_print_event_log(priv, 0, 1797 next_entry, mode, pos, buf, bufsz); 1798 } else 1799 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1800 next_entry, size, mode, 1801 pos, buf, bufsz); 1802#else 1803 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1804 next_entry, size, mode, 1805 pos, buf, bufsz); 1806#endif 1807 return pos; 1808} 1809 1810static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) 1811{ 1812 unsigned int reload_msec; 1813 unsigned long reload_jiffies; 1814 1815 if (iwl_have_debug_level(IWL_DL_FW_ERRORS)) 1816 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); 1817 1818 /* uCode is no longer loaded. */ 1819 priv->ucode_loaded = false; 1820 1821 /* Set the FW error flag -- cleared on iwl_down */ 1822 set_bit(STATUS_FW_ERROR, &priv->status); 1823 1824 iwl_abort_notification_waits(&priv->notif_wait); 1825 1826 /* Keep the restart process from trying to send host 1827 * commands by clearing the ready bit */ 1828 clear_bit(STATUS_READY, &priv->status); 1829 1830 if (!ondemand) { 1831 /* 1832 * If firmware keep reloading, then it indicate something 1833 * serious wrong and firmware having problem to recover 1834 * from it. Instead of keep trying which will fill the syslog 1835 * and hang the system, let's just stop it 1836 */ 1837 reload_jiffies = jiffies; 1838 reload_msec = jiffies_to_msecs((long) reload_jiffies - 1839 (long) priv->reload_jiffies); 1840 priv->reload_jiffies = reload_jiffies; 1841 if (reload_msec <= IWL_MIN_RELOAD_DURATION) { 1842 priv->reload_count++; 1843 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { 1844 IWL_ERR(priv, "BUG_ON, Stop restarting\n"); 1845 return; 1846 } 1847 } else 1848 priv->reload_count = 0; 1849 } 1850 1851 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { 1852 if (iwlwifi_mod_params.restart_fw) { 1853 IWL_DEBUG_FW_ERRORS(priv, 1854 "Restarting adapter due to uCode error.\n"); 1855 queue_work(priv->workqueue, &priv->restart); 1856 } else 1857 IWL_DEBUG_FW_ERRORS(priv, 1858 "Detected FW error, but not restarting\n"); 1859 } 1860} 1861 1862static void iwl_nic_error(struct iwl_op_mode *op_mode) 1863{ 1864 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1865 1866 IWL_ERR(priv, "Loaded firmware version: %s\n", 1867 priv->fw->fw_version); 1868 1869 iwl_dump_nic_error_log(priv); 1870 iwl_dump_nic_event_log(priv, false, NULL); 1871 1872 iwlagn_fw_error(priv, false); 1873} 1874 1875static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode) 1876{ 1877 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1878 1879 if (!iwl_check_for_ct_kill(priv)) { 1880 IWL_ERR(priv, "Restarting adapter queue is full\n"); 1881 iwlagn_fw_error(priv, false); 1882 } 1883} 1884 1885#define EEPROM_RF_CONFIG_TYPE_MAX 0x3 1886 1887static void iwl_nic_config(struct iwl_op_mode *op_mode) 1888{ 1889 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1890 1891 /* SKU Control */ 1892 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1893 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 1894 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP, 1895 (CSR_HW_REV_STEP(priv->trans->hw_rev) << 1896 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) | 1897 (CSR_HW_REV_DASH(priv->trans->hw_rev) << 1898 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH)); 1899 1900 /* write radio config values to register */ 1901 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) { 1902 u32 reg_val = 1903 priv->nvm_data->radio_cfg_type << 1904 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | 1905 priv->nvm_data->radio_cfg_step << 1906 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | 1907 priv->nvm_data->radio_cfg_dash << 1908 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 1909 1910 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1911 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 1912 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 1913 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, 1914 reg_val); 1915 1916 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", 1917 priv->nvm_data->radio_cfg_type, 1918 priv->nvm_data->radio_cfg_step, 1919 priv->nvm_data->radio_cfg_dash); 1920 } else { 1921 WARN_ON(1); 1922 } 1923 1924 /* set CSR_HW_CONFIG_REG for uCode use */ 1925 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, 1926 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 1927 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); 1928 1929 /* W/A : NIC is stuck in a reset state after Early PCIe power off 1930 * (PCIe power is lost before PERST# is asserted), 1931 * causing ME FW to lose ownership and not being able to obtain it back. 1932 */ 1933 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, 1934 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 1935 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 1936 1937 if (priv->lib->nic_config) 1938 priv->lib->nic_config(priv); 1939} 1940 1941static void iwl_wimax_active(struct iwl_op_mode *op_mode) 1942{ 1943 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1944 1945 clear_bit(STATUS_READY, &priv->status); 1946 IWL_ERR(priv, "RF is used by WiMAX\n"); 1947} 1948 1949static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 1950{ 1951 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1952 int mq = priv->queue_to_mac80211[queue]; 1953 1954 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 1955 return; 1956 1957 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) { 1958 IWL_DEBUG_TX_QUEUES(priv, 1959 "queue %d (mac80211 %d) already stopped\n", 1960 queue, mq); 1961 return; 1962 } 1963 1964 set_bit(mq, &priv->transport_queue_stop); 1965 ieee80211_stop_queue(priv->hw, mq); 1966} 1967 1968static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 1969{ 1970 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1971 int mq = priv->queue_to_mac80211[queue]; 1972 1973 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 1974 return; 1975 1976 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { 1977 IWL_DEBUG_TX_QUEUES(priv, 1978 "queue %d (mac80211 %d) already awake\n", 1979 queue, mq); 1980 return; 1981 } 1982 1983 clear_bit(mq, &priv->transport_queue_stop); 1984 1985 if (!priv->passive_no_rx) 1986 ieee80211_wake_queue(priv->hw, mq); 1987} 1988 1989void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) 1990{ 1991 int mq; 1992 1993 if (!priv->passive_no_rx) 1994 return; 1995 1996 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { 1997 if (!test_bit(mq, &priv->transport_queue_stop)) { 1998 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq); 1999 ieee80211_wake_queue(priv->hw, mq); 2000 } else { 2001 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq); 2002 } 2003 } 2004 2005 priv->passive_no_rx = false; 2006} 2007 2008static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 2009{ 2010 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2011 struct ieee80211_tx_info *info; 2012 2013 info = IEEE80211_SKB_CB(skb); 2014 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); 2015 ieee80211_free_txskb(priv->hw, skb); 2016} 2017 2018static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 2019{ 2020 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2021 2022 if (state) 2023 set_bit(STATUS_RF_KILL_HW, &priv->status); 2024 else 2025 clear_bit(STATUS_RF_KILL_HW, &priv->status); 2026 2027 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); 2028 2029 return false; 2030} 2031 2032static void iwl_napi_add(struct iwl_op_mode *op_mode, 2033 struct napi_struct *napi, 2034 struct net_device *napi_dev, 2035 int (*poll)(struct napi_struct *, int), 2036 int weight) 2037{ 2038 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2039 2040 ieee80211_napi_add(priv->hw, napi, napi_dev, poll, weight); 2041} 2042 2043static const struct iwl_op_mode_ops iwl_dvm_ops = { 2044 .start = iwl_op_mode_dvm_start, 2045 .stop = iwl_op_mode_dvm_stop, 2046 .rx = iwl_rx_dispatch, 2047 .queue_full = iwl_stop_sw_queue, 2048 .queue_not_full = iwl_wake_sw_queue, 2049 .hw_rf_kill = iwl_set_hw_rfkill_state, 2050 .free_skb = iwl_free_skb, 2051 .nic_error = iwl_nic_error, 2052 .cmd_queue_full = iwl_cmd_queue_full, 2053 .nic_config = iwl_nic_config, 2054 .wimax_active = iwl_wimax_active, 2055 .napi_add = iwl_napi_add, 2056}; 2057 2058/***************************************************************************** 2059 * 2060 * driver and module entry point 2061 * 2062 *****************************************************************************/ 2063static int __init iwl_init(void) 2064{ 2065 2066 int ret; 2067 2068 ret = iwlagn_rate_control_register(); 2069 if (ret) { 2070 pr_err("Unable to register rate control algorithm: %d\n", ret); 2071 return ret; 2072 } 2073 2074 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); 2075 if (ret) { 2076 pr_err("Unable to register op_mode: %d\n", ret); 2077 iwlagn_rate_control_unregister(); 2078 } 2079 2080 return ret; 2081} 2082module_init(iwl_init); 2083 2084static void __exit iwl_exit(void) 2085{ 2086 iwl_opmode_deregister("iwldvm"); 2087 iwlagn_rate_control_unregister(); 2088} 2089module_exit(iwl_exit); 2090