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/* 68 * module name, copyright, version, etc. 69 */ 70#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" 71 72#ifdef CONFIG_IWLWIFI_DEBUG 73#define VD "d" 74#else 75#define VD 76#endif 77 78#define DRV_VERSION IWLWIFI_VERSION VD 79 80 81MODULE_DESCRIPTION(DRV_DESCRIPTION); 82MODULE_VERSION(DRV_VERSION); 83MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 84MODULE_LICENSE("GPL"); 85 86static const struct iwl_op_mode_ops iwl_dvm_ops; 87 88void iwl_update_chain_flags(struct iwl_priv *priv) 89{ 90 struct iwl_rxon_context *ctx; 91 92 for_each_context(priv, ctx) { 93 iwlagn_set_rxon_chain(priv, ctx); 94 if (ctx->active.rx_chain != ctx->staging.rx_chain) 95 iwlagn_commit_rxon(priv, ctx); 96 } 97} 98 99/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ 100static void iwl_set_beacon_tim(struct iwl_priv *priv, 101 struct iwl_tx_beacon_cmd *tx_beacon_cmd, 102 u8 *beacon, u32 frame_size) 103{ 104 u16 tim_idx; 105 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 106 107 /* 108 * The index is relative to frame start but we start looking at the 109 * variable-length part of the beacon. 110 */ 111 tim_idx = mgmt->u.beacon.variable - beacon; 112 113 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 114 while ((tim_idx < (frame_size - 2)) && 115 (beacon[tim_idx] != WLAN_EID_TIM)) 116 tim_idx += beacon[tim_idx+1] + 2; 117 118 /* If TIM field was found, set variables */ 119 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 120 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); 121 tx_beacon_cmd->tim_size = beacon[tim_idx+1]; 122 } else 123 IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); 124} 125 126int iwlagn_send_beacon_cmd(struct iwl_priv *priv) 127{ 128 struct iwl_tx_beacon_cmd *tx_beacon_cmd; 129 struct iwl_host_cmd cmd = { 130 .id = REPLY_TX_BEACON, 131 }; 132 struct ieee80211_tx_info *info; 133 u32 frame_size; 134 u32 rate_flags; 135 u32 rate; 136 137 /* 138 * We have to set up the TX command, the TX Beacon command, and the 139 * beacon contents. 140 */ 141 142 lockdep_assert_held(&priv->mutex); 143 144 if (!priv->beacon_ctx) { 145 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); 146 return 0; 147 } 148 149 if (WARN_ON(!priv->beacon_skb)) 150 return -EINVAL; 151 152 /* Allocate beacon command */ 153 if (!priv->beacon_cmd) 154 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); 155 tx_beacon_cmd = priv->beacon_cmd; 156 if (!tx_beacon_cmd) 157 return -ENOMEM; 158 159 frame_size = priv->beacon_skb->len; 160 161 /* Set up TX command fields */ 162 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); 163 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; 164 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; 165 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | 166 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; 167 168 /* Set up TX beacon command fields */ 169 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, 170 frame_size); 171 172 /* Set up packet rate and flags */ 173 info = IEEE80211_SKB_CB(priv->beacon_skb); 174 175 /* 176 * Let's set up the rate at least somewhat correctly; 177 * it will currently not actually be used by the uCode, 178 * it uses the broadcast station's rate instead. 179 */ 180 if (info->control.rates[0].idx < 0 || 181 info->control.rates[0].flags & IEEE80211_TX_RC_MCS) 182 rate = 0; 183 else 184 rate = info->control.rates[0].idx; 185 186 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, 187 priv->nvm_data->valid_tx_ant); 188 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); 189 190 /* In mac80211, rates for 5 GHz start at 0 */ 191 if (info->band == IEEE80211_BAND_5GHZ) 192 rate += IWL_FIRST_OFDM_RATE; 193 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) 194 rate_flags |= RATE_MCS_CCK_MSK; 195 196 tx_beacon_cmd->tx.rate_n_flags = 197 iwl_hw_set_rate_n_flags(rate, rate_flags); 198 199 /* Submit command */ 200 cmd.len[0] = sizeof(*tx_beacon_cmd); 201 cmd.data[0] = tx_beacon_cmd; 202 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 203 cmd.len[1] = frame_size; 204 cmd.data[1] = priv->beacon_skb->data; 205 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; 206 207 return iwl_dvm_send_cmd(priv, &cmd); 208} 209 210static void iwl_bg_beacon_update(struct work_struct *work) 211{ 212 struct iwl_priv *priv = 213 container_of(work, struct iwl_priv, beacon_update); 214 struct sk_buff *beacon; 215 216 mutex_lock(&priv->mutex); 217 if (!priv->beacon_ctx) { 218 IWL_ERR(priv, "updating beacon w/o beacon context!\n"); 219 goto out; 220 } 221 222 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { 223 /* 224 * The ucode will send beacon notifications even in 225 * IBSS mode, but we don't want to process them. But 226 * we need to defer the type check to here due to 227 * requiring locking around the beacon_ctx access. 228 */ 229 goto out; 230 } 231 232 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ 233 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); 234 if (!beacon) { 235 IWL_ERR(priv, "update beacon failed -- keeping old\n"); 236 goto out; 237 } 238 239 /* new beacon skb is allocated every time; dispose previous.*/ 240 dev_kfree_skb(priv->beacon_skb); 241 242 priv->beacon_skb = beacon; 243 244 iwlagn_send_beacon_cmd(priv); 245 out: 246 mutex_unlock(&priv->mutex); 247} 248 249static void iwl_bg_bt_runtime_config(struct work_struct *work) 250{ 251 struct iwl_priv *priv = 252 container_of(work, struct iwl_priv, bt_runtime_config); 253 254 mutex_lock(&priv->mutex); 255 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 256 goto out; 257 258 /* dont send host command if rf-kill is on */ 259 if (!iwl_is_ready_rf(priv)) 260 goto out; 261 262 iwlagn_send_advance_bt_config(priv); 263out: 264 mutex_unlock(&priv->mutex); 265} 266 267static void iwl_bg_bt_full_concurrency(struct work_struct *work) 268{ 269 struct iwl_priv *priv = 270 container_of(work, struct iwl_priv, bt_full_concurrency); 271 struct iwl_rxon_context *ctx; 272 273 mutex_lock(&priv->mutex); 274 275 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 276 goto out; 277 278 /* dont send host command if rf-kill is on */ 279 if (!iwl_is_ready_rf(priv)) 280 goto out; 281 282 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", 283 priv->bt_full_concurrent ? 284 "full concurrency" : "3-wire"); 285 286 /* 287 * LQ & RXON updated cmds must be sent before BT Config cmd 288 * to avoid 3-wire collisions 289 */ 290 for_each_context(priv, ctx) { 291 iwlagn_set_rxon_chain(priv, ctx); 292 iwlagn_commit_rxon(priv, ctx); 293 } 294 295 iwlagn_send_advance_bt_config(priv); 296out: 297 mutex_unlock(&priv->mutex); 298} 299 300int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) 301{ 302 struct iwl_statistics_cmd statistics_cmd = { 303 .configuration_flags = 304 clear ? IWL_STATS_CONF_CLEAR_STATS : 0, 305 }; 306 307 if (flags & CMD_ASYNC) 308 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 309 CMD_ASYNC, 310 sizeof(struct iwl_statistics_cmd), 311 &statistics_cmd); 312 else 313 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0, 314 sizeof(struct iwl_statistics_cmd), 315 &statistics_cmd); 316} 317 318/** 319 * iwl_bg_statistics_periodic - Timer callback to queue statistics 320 * 321 * This callback is provided in order to send a statistics request. 322 * 323 * This timer function is continually reset to execute within 324 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION 325 * was received. We need to ensure we receive the statistics in order 326 * to update the temperature used for calibrating the TXPOWER. 327 */ 328static void iwl_bg_statistics_periodic(unsigned long data) 329{ 330 struct iwl_priv *priv = (struct iwl_priv *)data; 331 332 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 333 return; 334 335 /* dont send host command if rf-kill is on */ 336 if (!iwl_is_ready_rf(priv)) 337 return; 338 339 iwl_send_statistics_request(priv, CMD_ASYNC, false); 340} 341 342 343static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, 344 u32 start_idx, u32 num_events, 345 u32 capacity, u32 mode) 346{ 347 u32 i; 348 u32 ptr; /* SRAM byte address of log data */ 349 u32 ev, time, data; /* event log data */ 350 unsigned long reg_flags; 351 352 if (mode == 0) 353 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); 354 else 355 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); 356 357 /* Make sure device is powered up for SRAM reads */ 358 if (!iwl_trans_grab_nic_access(priv->trans, false, ®_flags)) 359 return; 360 361 /* Set starting address; reads will auto-increment */ 362 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); 363 364 /* 365 * Refuse to read more than would have fit into the log from 366 * the current start_idx. This used to happen due to the race 367 * described below, but now WARN because the code below should 368 * prevent it from happening here. 369 */ 370 if (WARN_ON(num_events > capacity - start_idx)) 371 num_events = capacity - start_idx; 372 373 /* 374 * "time" is actually "data" for mode 0 (no timestamp). 375 * place event id # at far right for easier visual parsing. 376 */ 377 for (i = 0; i < num_events; i++) { 378 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 379 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 380 if (mode == 0) { 381 trace_iwlwifi_dev_ucode_cont_event( 382 priv->trans->dev, 0, time, ev); 383 } else { 384 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); 385 trace_iwlwifi_dev_ucode_cont_event( 386 priv->trans->dev, time, data, ev); 387 } 388 } 389 /* Allow device to power down */ 390 iwl_trans_release_nic_access(priv->trans, ®_flags); 391} 392 393static void iwl_continuous_event_trace(struct iwl_priv *priv) 394{ 395 u32 capacity; /* event log capacity in # entries */ 396 struct { 397 u32 capacity; 398 u32 mode; 399 u32 wrap_counter; 400 u32 write_counter; 401 } __packed read; 402 u32 base; /* SRAM byte address of event log header */ 403 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 404 u32 num_wraps; /* # times uCode wrapped to top of log */ 405 u32 next_entry; /* index of next entry to be written by uCode */ 406 407 base = priv->device_pointers.log_event_table; 408 if (iwlagn_hw_valid_rtc_data_addr(base)) { 409 iwl_trans_read_mem_bytes(priv->trans, base, 410 &read, sizeof(read)); 411 capacity = read.capacity; 412 mode = read.mode; 413 num_wraps = read.wrap_counter; 414 next_entry = read.write_counter; 415 } else 416 return; 417 418 /* 419 * Unfortunately, the uCode doesn't use temporary variables. 420 * Therefore, it can happen that we read next_entry == capacity, 421 * which really means next_entry == 0. 422 */ 423 if (unlikely(next_entry == capacity)) 424 next_entry = 0; 425 /* 426 * Additionally, the uCode increases the write pointer before 427 * the wraps counter, so if the write pointer is smaller than 428 * the old write pointer (wrap occurred) but we read that no 429 * wrap occurred, we actually read between the next_entry and 430 * num_wraps update (this does happen in practice!!) -- take 431 * that into account by increasing num_wraps. 432 */ 433 if (unlikely(next_entry < priv->event_log.next_entry && 434 num_wraps == priv->event_log.num_wraps)) 435 num_wraps++; 436 437 if (num_wraps == priv->event_log.num_wraps) { 438 iwl_print_cont_event_trace( 439 priv, base, priv->event_log.next_entry, 440 next_entry - priv->event_log.next_entry, 441 capacity, mode); 442 443 priv->event_log.non_wraps_count++; 444 } else { 445 if (num_wraps - priv->event_log.num_wraps > 1) 446 priv->event_log.wraps_more_count++; 447 else 448 priv->event_log.wraps_once_count++; 449 450 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, 451 num_wraps - priv->event_log.num_wraps, 452 next_entry, priv->event_log.next_entry); 453 454 if (next_entry < priv->event_log.next_entry) { 455 iwl_print_cont_event_trace( 456 priv, base, priv->event_log.next_entry, 457 capacity - priv->event_log.next_entry, 458 capacity, mode); 459 460 iwl_print_cont_event_trace( 461 priv, base, 0, next_entry, capacity, mode); 462 } else { 463 iwl_print_cont_event_trace( 464 priv, base, next_entry, 465 capacity - next_entry, 466 capacity, mode); 467 468 iwl_print_cont_event_trace( 469 priv, base, 0, next_entry, capacity, mode); 470 } 471 } 472 473 priv->event_log.num_wraps = num_wraps; 474 priv->event_log.next_entry = next_entry; 475} 476 477/** 478 * iwl_bg_ucode_trace - Timer callback to log ucode event 479 * 480 * The timer is continually set to execute every 481 * UCODE_TRACE_PERIOD milliseconds after the last timer expired 482 * this function is to perform continuous uCode event logging operation 483 * if enabled 484 */ 485static void iwl_bg_ucode_trace(unsigned long data) 486{ 487 struct iwl_priv *priv = (struct iwl_priv *)data; 488 489 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 490 return; 491 492 if (priv->event_log.ucode_trace) { 493 iwl_continuous_event_trace(priv); 494 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ 495 mod_timer(&priv->ucode_trace, 496 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); 497 } 498} 499 500static void iwl_bg_tx_flush(struct work_struct *work) 501{ 502 struct iwl_priv *priv = 503 container_of(work, struct iwl_priv, tx_flush); 504 505 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 506 return; 507 508 /* do nothing if rf-kill is on */ 509 if (!iwl_is_ready_rf(priv)) 510 return; 511 512 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); 513 iwlagn_dev_txfifo_flush(priv); 514} 515 516/* 517 * queue/FIFO/AC mapping definitions 518 */ 519 520static const u8 iwlagn_bss_ac_to_fifo[] = { 521 IWL_TX_FIFO_VO, 522 IWL_TX_FIFO_VI, 523 IWL_TX_FIFO_BE, 524 IWL_TX_FIFO_BK, 525}; 526 527static const u8 iwlagn_bss_ac_to_queue[] = { 528 0, 1, 2, 3, 529}; 530 531static const u8 iwlagn_pan_ac_to_fifo[] = { 532 IWL_TX_FIFO_VO_IPAN, 533 IWL_TX_FIFO_VI_IPAN, 534 IWL_TX_FIFO_BE_IPAN, 535 IWL_TX_FIFO_BK_IPAN, 536}; 537 538static const u8 iwlagn_pan_ac_to_queue[] = { 539 7, 6, 5, 4, 540}; 541 542static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) 543{ 544 int i; 545 546 /* 547 * The default context is always valid, 548 * the PAN context depends on uCode. 549 */ 550 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); 551 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) 552 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 553 554 for (i = 0; i < NUM_IWL_RXON_CTX; i++) 555 priv->contexts[i].ctxid = i; 556 557 priv->contexts[IWL_RXON_CTX_BSS].always_active = true; 558 priv->contexts[IWL_RXON_CTX_BSS].is_active = true; 559 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; 560 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; 561 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; 562 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; 563 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; 564 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; 565 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 566 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = 567 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR); 568 priv->contexts[IWL_RXON_CTX_BSS].interface_modes = 569 BIT(NL80211_IFTYPE_STATION); 570 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; 571 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; 572 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; 573 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; 574 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, 575 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); 576 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, 577 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); 578 579 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; 580 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = 581 REPLY_WIPAN_RXON_TIMING; 582 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = 583 REPLY_WIPAN_RXON_ASSOC; 584 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; 585 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; 586 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; 587 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; 588 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; 589 priv->contexts[IWL_RXON_CTX_PAN].interface_modes = 590 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); 591 592 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; 593 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; 594 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; 595 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, 596 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); 597 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, 598 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); 599 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; 600 601 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); 602} 603 604static void iwl_rf_kill_ct_config(struct iwl_priv *priv) 605{ 606 struct iwl_ct_kill_config cmd; 607 struct iwl_ct_kill_throttling_config adv_cmd; 608 int ret = 0; 609 610 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 611 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); 612 613 priv->thermal_throttle.ct_kill_toggle = false; 614 615 if (priv->lib->support_ct_kill_exit) { 616 adv_cmd.critical_temperature_enter = 617 cpu_to_le32(priv->hw_params.ct_kill_threshold); 618 adv_cmd.critical_temperature_exit = 619 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); 620 621 ret = iwl_dvm_send_cmd_pdu(priv, 622 REPLY_CT_KILL_CONFIG_CMD, 623 0, sizeof(adv_cmd), &adv_cmd); 624 if (ret) 625 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 626 else 627 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 628 "succeeded, critical temperature enter is %d," 629 "exit is %d\n", 630 priv->hw_params.ct_kill_threshold, 631 priv->hw_params.ct_kill_exit_threshold); 632 } else { 633 cmd.critical_temperature_R = 634 cpu_to_le32(priv->hw_params.ct_kill_threshold); 635 636 ret = iwl_dvm_send_cmd_pdu(priv, 637 REPLY_CT_KILL_CONFIG_CMD, 638 0, sizeof(cmd), &cmd); 639 if (ret) 640 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); 641 else 642 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " 643 "succeeded, " 644 "critical temperature is %d\n", 645 priv->hw_params.ct_kill_threshold); 646 } 647} 648 649static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) 650{ 651 struct iwl_calib_cfg_cmd calib_cfg_cmd; 652 struct iwl_host_cmd cmd = { 653 .id = CALIBRATION_CFG_CMD, 654 .len = { sizeof(struct iwl_calib_cfg_cmd), }, 655 .data = { &calib_cfg_cmd, }, 656 }; 657 658 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); 659 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; 660 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); 661 662 return iwl_dvm_send_cmd(priv, &cmd); 663} 664 665 666static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) 667{ 668 struct iwl_tx_ant_config_cmd tx_ant_cmd = { 669 .valid = cpu_to_le32(valid_tx_ant), 670 }; 671 672 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { 673 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); 674 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0, 675 sizeof(struct iwl_tx_ant_config_cmd), 676 &tx_ant_cmd); 677 } else { 678 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); 679 return -EOPNOTSUPP; 680 } 681} 682 683static void iwl_send_bt_config(struct iwl_priv *priv) 684{ 685 struct iwl_bt_cmd bt_cmd = { 686 .lead_time = BT_LEAD_TIME_DEF, 687 .max_kill = BT_MAX_KILL_DEF, 688 .kill_ack_mask = 0, 689 .kill_cts_mask = 0, 690 }; 691 692 if (!iwlwifi_mod_params.bt_coex_active) 693 bt_cmd.flags = BT_COEX_DISABLE; 694 else 695 bt_cmd.flags = BT_COEX_ENABLE; 696 697 priv->bt_enable_flag = bt_cmd.flags; 698 IWL_DEBUG_INFO(priv, "BT coex %s\n", 699 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); 700 701 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 702 0, sizeof(struct iwl_bt_cmd), &bt_cmd)) 703 IWL_ERR(priv, "failed to send BT Coex Config\n"); 704} 705 706/** 707 * iwl_alive_start - called after REPLY_ALIVE notification received 708 * from protocol/runtime uCode (initialization uCode's 709 * Alive gets handled by iwl_init_alive_start()). 710 */ 711int iwl_alive_start(struct iwl_priv *priv) 712{ 713 int ret = 0; 714 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 715 716 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); 717 718 /* After the ALIVE response, we can send host commands to the uCode */ 719 set_bit(STATUS_ALIVE, &priv->status); 720 721 if (iwl_is_rfkill(priv)) 722 return -ERFKILL; 723 724 if (priv->event_log.ucode_trace) { 725 /* start collecting data now */ 726 mod_timer(&priv->ucode_trace, jiffies); 727 } 728 729 /* download priority table before any calibration request */ 730 if (priv->lib->bt_params && 731 priv->lib->bt_params->advanced_bt_coexist) { 732 /* Configure Bluetooth device coexistence support */ 733 if (priv->lib->bt_params->bt_sco_disable) 734 priv->bt_enable_pspoll = false; 735 else 736 priv->bt_enable_pspoll = true; 737 738 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 739 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 740 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 741 iwlagn_send_advance_bt_config(priv); 742 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; 743 priv->cur_rssi_ctx = NULL; 744 745 iwl_send_prio_tbl(priv); 746 747 /* FIXME: w/a to force change uCode BT state machine */ 748 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, 749 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 750 if (ret) 751 return ret; 752 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, 753 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); 754 if (ret) 755 return ret; 756 } else if (priv->lib->bt_params) { 757 /* 758 * default is 2-wire BT coexexistence support 759 */ 760 iwl_send_bt_config(priv); 761 } 762 763 /* 764 * Perform runtime calibrations, including DC calibration. 765 */ 766 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); 767 768 ieee80211_wake_queues(priv->hw); 769 770 /* Configure Tx antenna selection based on H/W config */ 771 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant); 772 773 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { 774 struct iwl_rxon_cmd *active_rxon = 775 (struct iwl_rxon_cmd *)&ctx->active; 776 /* apply any changes in staging */ 777 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; 778 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; 779 } else { 780 struct iwl_rxon_context *tmp; 781 /* Initialize our rx_config data */ 782 for_each_context(priv, tmp) 783 iwl_connection_init_rx_config(priv, tmp); 784 785 iwlagn_set_rxon_chain(priv, ctx); 786 } 787 788 if (!priv->wowlan) { 789 /* WoWLAN ucode will not reply in the same way, skip it */ 790 iwl_reset_run_time_calib(priv); 791 } 792 793 set_bit(STATUS_READY, &priv->status); 794 795 /* Configure the adapter for unassociated operation */ 796 ret = iwlagn_commit_rxon(priv, ctx); 797 if (ret) 798 return ret; 799 800 /* At this point, the NIC is initialized and operational */ 801 iwl_rf_kill_ct_config(priv); 802 803 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); 804 805 return iwl_power_update_mode(priv, true); 806} 807 808/** 809 * iwl_clear_driver_stations - clear knowledge of all stations from driver 810 * @priv: iwl priv struct 811 * 812 * This is called during iwl_down() to make sure that in the case 813 * we're coming there from a hardware restart mac80211 will be 814 * able to reconfigure stations -- if we're getting there in the 815 * normal down flow then the stations will already be cleared. 816 */ 817static void iwl_clear_driver_stations(struct iwl_priv *priv) 818{ 819 struct iwl_rxon_context *ctx; 820 821 spin_lock_bh(&priv->sta_lock); 822 memset(priv->stations, 0, sizeof(priv->stations)); 823 priv->num_stations = 0; 824 825 priv->ucode_key_table = 0; 826 827 for_each_context(priv, ctx) { 828 /* 829 * Remove all key information that is not stored as part 830 * of station information since mac80211 may not have had 831 * a chance to remove all the keys. When device is 832 * reconfigured by mac80211 after an error all keys will 833 * be reconfigured. 834 */ 835 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 836 ctx->key_mapping_keys = 0; 837 } 838 839 spin_unlock_bh(&priv->sta_lock); 840} 841 842void iwl_down(struct iwl_priv *priv) 843{ 844 int exit_pending; 845 846 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); 847 848 lockdep_assert_held(&priv->mutex); 849 850 iwl_scan_cancel_timeout(priv, 200); 851 852 exit_pending = 853 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); 854 855 iwl_clear_ucode_stations(priv, NULL); 856 iwl_dealloc_bcast_stations(priv); 857 iwl_clear_driver_stations(priv); 858 859 /* reset BT coex data */ 860 priv->bt_status = 0; 861 priv->cur_rssi_ctx = NULL; 862 priv->bt_is_sco = 0; 863 if (priv->lib->bt_params) 864 priv->bt_traffic_load = 865 priv->lib->bt_params->bt_init_traffic_load; 866 else 867 priv->bt_traffic_load = 0; 868 priv->bt_full_concurrent = false; 869 priv->bt_ci_compliance = 0; 870 871 /* Wipe out the EXIT_PENDING status bit if we are not actually 872 * exiting the module */ 873 if (!exit_pending) 874 clear_bit(STATUS_EXIT_PENDING, &priv->status); 875 876 if (priv->mac80211_registered) 877 ieee80211_stop_queues(priv->hw); 878 879 priv->ucode_loaded = false; 880 iwl_trans_stop_device(priv->trans); 881 882 /* Set num_aux_in_flight must be done after the transport is stopped */ 883 atomic_set(&priv->num_aux_in_flight, 0); 884 885 /* Clear out all status bits but a few that are stable across reset */ 886 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << 887 STATUS_RF_KILL_HW | 888 test_bit(STATUS_FW_ERROR, &priv->status) << 889 STATUS_FW_ERROR | 890 test_bit(STATUS_EXIT_PENDING, &priv->status) << 891 STATUS_EXIT_PENDING; 892 893 dev_kfree_skb(priv->beacon_skb); 894 priv->beacon_skb = NULL; 895} 896 897/***************************************************************************** 898 * 899 * Workqueue callbacks 900 * 901 *****************************************************************************/ 902 903static void iwl_bg_run_time_calib_work(struct work_struct *work) 904{ 905 struct iwl_priv *priv = container_of(work, struct iwl_priv, 906 run_time_calib_work); 907 908 mutex_lock(&priv->mutex); 909 910 if (test_bit(STATUS_EXIT_PENDING, &priv->status) || 911 test_bit(STATUS_SCANNING, &priv->status)) { 912 mutex_unlock(&priv->mutex); 913 return; 914 } 915 916 if (priv->start_calib) { 917 iwl_chain_noise_calibration(priv); 918 iwl_sensitivity_calibration(priv); 919 } 920 921 mutex_unlock(&priv->mutex); 922} 923 924void iwlagn_prepare_restart(struct iwl_priv *priv) 925{ 926 bool bt_full_concurrent; 927 u8 bt_ci_compliance; 928 u8 bt_load; 929 u8 bt_status; 930 bool bt_is_sco; 931 int i; 932 933 lockdep_assert_held(&priv->mutex); 934 935 priv->is_open = 0; 936 937 /* 938 * __iwl_down() will clear the BT status variables, 939 * which is correct, but when we restart we really 940 * want to keep them so restore them afterwards. 941 * 942 * The restart process will later pick them up and 943 * re-configure the hw when we reconfigure the BT 944 * command. 945 */ 946 bt_full_concurrent = priv->bt_full_concurrent; 947 bt_ci_compliance = priv->bt_ci_compliance; 948 bt_load = priv->bt_traffic_load; 949 bt_status = priv->bt_status; 950 bt_is_sco = priv->bt_is_sco; 951 952 iwl_down(priv); 953 954 priv->bt_full_concurrent = bt_full_concurrent; 955 priv->bt_ci_compliance = bt_ci_compliance; 956 priv->bt_traffic_load = bt_load; 957 priv->bt_status = bt_status; 958 priv->bt_is_sco = bt_is_sco; 959 960 /* reset aggregation queues */ 961 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) 962 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 963 /* and stop counts */ 964 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 965 atomic_set(&priv->queue_stop_count[i], 0); 966 967 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); 968} 969 970static void iwl_bg_restart(struct work_struct *data) 971{ 972 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); 973 974 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 975 return; 976 977 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { 978 mutex_lock(&priv->mutex); 979 iwlagn_prepare_restart(priv); 980 mutex_unlock(&priv->mutex); 981 iwl_cancel_deferred_work(priv); 982 if (priv->mac80211_registered) 983 ieee80211_restart_hw(priv->hw); 984 else 985 IWL_ERR(priv, 986 "Cannot request restart before registrating with mac80211\n"); 987 } else { 988 WARN_ON(1); 989 } 990} 991 992/***************************************************************************** 993 * 994 * driver setup and teardown 995 * 996 *****************************************************************************/ 997 998static void iwl_setup_deferred_work(struct iwl_priv *priv) 999{ 1000 priv->workqueue = create_singlethread_workqueue(DRV_NAME); 1001 1002 INIT_WORK(&priv->restart, iwl_bg_restart); 1003 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); 1004 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); 1005 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); 1006 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); 1007 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); 1008 1009 iwl_setup_scan_deferred_work(priv); 1010 1011 if (priv->lib->bt_params) 1012 iwlagn_bt_setup_deferred_work(priv); 1013 1014 init_timer(&priv->statistics_periodic); 1015 priv->statistics_periodic.data = (unsigned long)priv; 1016 priv->statistics_periodic.function = iwl_bg_statistics_periodic; 1017 1018 init_timer(&priv->ucode_trace); 1019 priv->ucode_trace.data = (unsigned long)priv; 1020 priv->ucode_trace.function = iwl_bg_ucode_trace; 1021} 1022 1023void iwl_cancel_deferred_work(struct iwl_priv *priv) 1024{ 1025 if (priv->lib->bt_params) 1026 iwlagn_bt_cancel_deferred_work(priv); 1027 1028 cancel_work_sync(&priv->run_time_calib_work); 1029 cancel_work_sync(&priv->beacon_update); 1030 1031 iwl_cancel_scan_deferred_work(priv); 1032 1033 cancel_work_sync(&priv->bt_full_concurrency); 1034 cancel_work_sync(&priv->bt_runtime_config); 1035 1036 del_timer_sync(&priv->statistics_periodic); 1037 del_timer_sync(&priv->ucode_trace); 1038} 1039 1040static int iwl_init_drv(struct iwl_priv *priv) 1041{ 1042 spin_lock_init(&priv->sta_lock); 1043 1044 mutex_init(&priv->mutex); 1045 1046 INIT_LIST_HEAD(&priv->calib_results); 1047 1048 priv->band = IEEE80211_BAND_2GHZ; 1049 1050 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold; 1051 1052 priv->iw_mode = NL80211_IFTYPE_STATION; 1053 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; 1054 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; 1055 priv->agg_tids_count = 0; 1056 1057 priv->rx_statistics_jiffies = jiffies; 1058 1059 /* Choose which receivers/antennas to use */ 1060 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); 1061 1062 iwl_init_scan_params(priv); 1063 1064 /* init bt coex */ 1065 if (priv->lib->bt_params && 1066 priv->lib->bt_params->advanced_bt_coexist) { 1067 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; 1068 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; 1069 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; 1070 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; 1071 priv->bt_duration = BT_DURATION_LIMIT_DEF; 1072 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; 1073 } 1074 1075 return 0; 1076} 1077 1078static void iwl_uninit_drv(struct iwl_priv *priv) 1079{ 1080 kfree(priv->scan_cmd); 1081 kfree(priv->beacon_cmd); 1082 kfree(rcu_dereference_raw(priv->noa_data)); 1083 iwl_calib_free_results(priv); 1084#ifdef CONFIG_IWLWIFI_DEBUGFS 1085 kfree(priv->wowlan_sram); 1086#endif 1087} 1088 1089static void iwl_set_hw_params(struct iwl_priv *priv) 1090{ 1091 if (priv->cfg->ht_params) 1092 priv->hw_params.use_rts_for_aggregation = 1093 priv->cfg->ht_params->use_rts_for_aggregation; 1094 1095 /* Device-specific setup */ 1096 priv->lib->set_hw_params(priv); 1097} 1098 1099 1100 1101/* show what optional capabilities we have */ 1102static void iwl_option_config(struct iwl_priv *priv) 1103{ 1104#ifdef CONFIG_IWLWIFI_DEBUG 1105 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); 1106#else 1107 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); 1108#endif 1109 1110#ifdef CONFIG_IWLWIFI_DEBUGFS 1111 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); 1112#else 1113 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); 1114#endif 1115 1116#ifdef CONFIG_IWLWIFI_DEVICE_TRACING 1117 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); 1118#else 1119 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); 1120#endif 1121} 1122 1123static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) 1124{ 1125 struct iwl_nvm_data *data = priv->nvm_data; 1126 1127 if (data->sku_cap_11n_enable && 1128 !priv->cfg->ht_params) { 1129 IWL_ERR(priv, "Invalid 11n configuration\n"); 1130 return -EINVAL; 1131 } 1132 1133 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable && 1134 !data->sku_cap_band_52GHz_enable) { 1135 IWL_ERR(priv, "Invalid device sku\n"); 1136 return -EINVAL; 1137 } 1138 1139 IWL_DEBUG_INFO(priv, 1140 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n", 1141 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled", 1142 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled", 1143 data->sku_cap_11n_enable ? "" : "NOT", "enabled"); 1144 1145 priv->hw_params.tx_chains_num = 1146 num_of_ant(data->valid_tx_ant); 1147 if (priv->cfg->rx_with_siso_diversity) 1148 priv->hw_params.rx_chains_num = 1; 1149 else 1150 priv->hw_params.rx_chains_num = 1151 num_of_ant(data->valid_rx_ant); 1152 1153 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", 1154 data->valid_tx_ant, 1155 data->valid_rx_ant); 1156 1157 return 0; 1158} 1159 1160static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, 1161 const struct iwl_cfg *cfg, 1162 const struct iwl_fw *fw, 1163 struct dentry *dbgfs_dir) 1164{ 1165 struct iwl_priv *priv; 1166 struct ieee80211_hw *hw; 1167 struct iwl_op_mode *op_mode; 1168 u16 num_mac; 1169 u32 ucode_flags; 1170 struct iwl_trans_config trans_cfg = {}; 1171 static const u8 no_reclaim_cmds[] = { 1172 REPLY_RX_PHY_CMD, 1173 REPLY_RX_MPDU_CMD, 1174 REPLY_COMPRESSED_BA, 1175 STATISTICS_NOTIFICATION, 1176 REPLY_TX, 1177 }; 1178 int i; 1179 1180 /************************ 1181 * 1. Allocating HW data 1182 ************************/ 1183 hw = iwl_alloc_all(); 1184 if (!hw) { 1185 pr_err("%s: Cannot allocate network device\n", cfg->name); 1186 goto out; 1187 } 1188 1189 op_mode = hw->priv; 1190 op_mode->ops = &iwl_dvm_ops; 1191 priv = IWL_OP_MODE_GET_DVM(op_mode); 1192 priv->trans = trans; 1193 priv->dev = trans->dev; 1194 priv->cfg = cfg; 1195 priv->fw = fw; 1196 1197 switch (priv->cfg->device_family) { 1198 case IWL_DEVICE_FAMILY_1000: 1199 case IWL_DEVICE_FAMILY_100: 1200 priv->lib = &iwl_dvm_1000_cfg; 1201 break; 1202 case IWL_DEVICE_FAMILY_2000: 1203 priv->lib = &iwl_dvm_2000_cfg; 1204 break; 1205 case IWL_DEVICE_FAMILY_105: 1206 priv->lib = &iwl_dvm_105_cfg; 1207 break; 1208 case IWL_DEVICE_FAMILY_2030: 1209 case IWL_DEVICE_FAMILY_135: 1210 priv->lib = &iwl_dvm_2030_cfg; 1211 break; 1212 case IWL_DEVICE_FAMILY_5000: 1213 priv->lib = &iwl_dvm_5000_cfg; 1214 break; 1215 case IWL_DEVICE_FAMILY_5150: 1216 priv->lib = &iwl_dvm_5150_cfg; 1217 break; 1218 case IWL_DEVICE_FAMILY_6000: 1219 case IWL_DEVICE_FAMILY_6000i: 1220 priv->lib = &iwl_dvm_6000_cfg; 1221 break; 1222 case IWL_DEVICE_FAMILY_6005: 1223 priv->lib = &iwl_dvm_6005_cfg; 1224 break; 1225 case IWL_DEVICE_FAMILY_6050: 1226 case IWL_DEVICE_FAMILY_6150: 1227 priv->lib = &iwl_dvm_6050_cfg; 1228 break; 1229 case IWL_DEVICE_FAMILY_6030: 1230 priv->lib = &iwl_dvm_6030_cfg; 1231 break; 1232 default: 1233 break; 1234 } 1235 1236 if (WARN_ON(!priv->lib)) 1237 goto out_free_hw; 1238 1239 /* 1240 * Populate the state variables that the transport layer needs 1241 * to know about. 1242 */ 1243 trans_cfg.op_mode = op_mode; 1244 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 1245 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 1246 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; 1247 if (!iwlwifi_mod_params.wd_disable) 1248 trans_cfg.queue_watchdog_timeout = 1249 priv->cfg->base_params->wd_timeout; 1250 else 1251 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; 1252 trans_cfg.command_names = iwl_dvm_cmd_strings; 1253 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM; 1254 1255 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < 1256 priv->cfg->base_params->num_of_queues); 1257 1258 ucode_flags = fw->ucode_capa.flags; 1259 1260 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { 1261 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; 1262 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; 1263 } else { 1264 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1265 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1266 } 1267 1268 /* Configure transport layer */ 1269 iwl_trans_configure(priv->trans, &trans_cfg); 1270 1271 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 1272 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 1273 1274 /* At this point both hw and priv are allocated. */ 1275 1276 SET_IEEE80211_DEV(priv->hw, priv->trans->dev); 1277 1278 iwl_option_config(priv); 1279 1280 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); 1281 1282 /* is antenna coupling more than 35dB ? */ 1283 priv->bt_ant_couple_ok = 1284 (iwlwifi_mod_params.ant_coupling > 1285 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? 1286 true : false; 1287 1288 /* bt channel inhibition enabled*/ 1289 priv->bt_ch_announce = true; 1290 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", 1291 (priv->bt_ch_announce) ? "On" : "Off"); 1292 1293 /* these spin locks will be used in apm_ops.init and EEPROM access 1294 * we should init now 1295 */ 1296 spin_lock_init(&priv->statistics.lock); 1297 1298 /*********************** 1299 * 2. Read REV register 1300 ***********************/ 1301 IWL_INFO(priv, "Detected %s, REV=0x%X\n", 1302 priv->cfg->name, priv->trans->hw_rev); 1303 1304 if (iwl_trans_start_hw(priv->trans)) 1305 goto out_free_hw; 1306 1307 /* Read the EEPROM */ 1308 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob, 1309 &priv->eeprom_blob_size)) { 1310 IWL_ERR(priv, "Unable to init EEPROM\n"); 1311 goto out_free_hw; 1312 } 1313 1314 /* Reset chip to save power until we load uCode during "up". */ 1315 iwl_trans_stop_device(priv->trans); 1316 1317 priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg, 1318 priv->eeprom_blob, 1319 priv->eeprom_blob_size); 1320 if (!priv->nvm_data) 1321 goto out_free_eeprom_blob; 1322 1323 if (iwl_nvm_check_version(priv->nvm_data, priv->trans)) 1324 goto out_free_eeprom; 1325 1326 if (iwl_eeprom_init_hw_params(priv)) 1327 goto out_free_eeprom; 1328 1329 /* extract MAC Address */ 1330 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN); 1331 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); 1332 priv->hw->wiphy->addresses = priv->addresses; 1333 priv->hw->wiphy->n_addresses = 1; 1334 num_mac = priv->nvm_data->n_hw_addrs; 1335 if (num_mac > 1) { 1336 memcpy(priv->addresses[1].addr, priv->addresses[0].addr, 1337 ETH_ALEN); 1338 priv->addresses[1].addr[5]++; 1339 priv->hw->wiphy->n_addresses++; 1340 } 1341 1342 /************************ 1343 * 4. Setup HW constants 1344 ************************/ 1345 iwl_set_hw_params(priv); 1346 1347 if (!(priv->nvm_data->sku_cap_ipan_enable)) { 1348 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n"); 1349 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; 1350 /* 1351 * if not PAN, then don't support P2P -- might be a uCode 1352 * packaging bug or due to the eeprom check above 1353 */ 1354 priv->sta_key_max_num = STA_KEY_MAX_NUM; 1355 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; 1356 1357 /* Configure transport layer again*/ 1358 iwl_trans_configure(priv->trans, &trans_cfg); 1359 } 1360 1361 /******************* 1362 * 5. Setup priv 1363 *******************/ 1364 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { 1365 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; 1366 if (i < IWLAGN_FIRST_AMPDU_QUEUE && 1367 i != IWL_DEFAULT_CMD_QUEUE_NUM && 1368 i != IWL_IPAN_CMD_QUEUE_NUM) 1369 priv->queue_to_mac80211[i] = i; 1370 atomic_set(&priv->queue_stop_count[i], 0); 1371 } 1372 1373 if (iwl_init_drv(priv)) 1374 goto out_free_eeprom; 1375 1376 /* At this point both hw and priv are initialized. */ 1377 1378 /******************** 1379 * 6. Setup services 1380 ********************/ 1381 iwl_setup_deferred_work(priv); 1382 iwl_setup_rx_handlers(priv); 1383 1384 iwl_power_initialize(priv); 1385 iwl_tt_initialize(priv); 1386 1387 snprintf(priv->hw->wiphy->fw_version, 1388 sizeof(priv->hw->wiphy->fw_version), 1389 "%s", fw->fw_version); 1390 1391 priv->new_scan_threshold_behaviour = 1392 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); 1393 1394 priv->phy_calib_chain_noise_reset_cmd = 1395 fw->ucode_capa.standard_phy_calibration_size; 1396 priv->phy_calib_chain_noise_gain_cmd = 1397 fw->ucode_capa.standard_phy_calibration_size + 1; 1398 1399 /* initialize all valid contexts */ 1400 iwl_init_context(priv, ucode_flags); 1401 1402 /************************************************** 1403 * This is still part of probe() in a sense... 1404 * 1405 * 7. Setup and register with mac80211 and debugfs 1406 **************************************************/ 1407 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa)) 1408 goto out_destroy_workqueue; 1409 1410 if (iwl_dbgfs_register(priv, dbgfs_dir)) 1411 goto out_mac80211_unregister; 1412 1413 return op_mode; 1414 1415out_mac80211_unregister: 1416 iwlagn_mac_unregister(priv); 1417out_destroy_workqueue: 1418 iwl_tt_exit(priv); 1419 iwl_cancel_deferred_work(priv); 1420 destroy_workqueue(priv->workqueue); 1421 priv->workqueue = NULL; 1422 iwl_uninit_drv(priv); 1423out_free_eeprom_blob: 1424 kfree(priv->eeprom_blob); 1425out_free_eeprom: 1426 iwl_free_nvm_data(priv->nvm_data); 1427out_free_hw: 1428 ieee80211_free_hw(priv->hw); 1429out: 1430 op_mode = NULL; 1431 return op_mode; 1432} 1433 1434static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) 1435{ 1436 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1437 1438 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); 1439 1440 iwlagn_mac_unregister(priv); 1441 1442 iwl_tt_exit(priv); 1443 1444 kfree(priv->eeprom_blob); 1445 iwl_free_nvm_data(priv->nvm_data); 1446 1447 /*netif_stop_queue(dev); */ 1448 flush_workqueue(priv->workqueue); 1449 1450 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes 1451 * priv->workqueue... so we can't take down the workqueue 1452 * until now... */ 1453 destroy_workqueue(priv->workqueue); 1454 priv->workqueue = NULL; 1455 1456 iwl_uninit_drv(priv); 1457 1458 dev_kfree_skb(priv->beacon_skb); 1459 1460 iwl_trans_op_mode_leave(priv->trans); 1461 ieee80211_free_hw(priv->hw); 1462} 1463 1464static const char * const desc_lookup_text[] = { 1465 "OK", 1466 "FAIL", 1467 "BAD_PARAM", 1468 "BAD_CHECKSUM", 1469 "NMI_INTERRUPT_WDG", 1470 "SYSASSERT", 1471 "FATAL_ERROR", 1472 "BAD_COMMAND", 1473 "HW_ERROR_TUNE_LOCK", 1474 "HW_ERROR_TEMPERATURE", 1475 "ILLEGAL_CHAN_FREQ", 1476 "VCC_NOT_STABLE", 1477 "FH_ERROR", 1478 "NMI_INTERRUPT_HOST", 1479 "NMI_INTERRUPT_ACTION_PT", 1480 "NMI_INTERRUPT_UNKNOWN", 1481 "UCODE_VERSION_MISMATCH", 1482 "HW_ERROR_ABS_LOCK", 1483 "HW_ERROR_CAL_LOCK_FAIL", 1484 "NMI_INTERRUPT_INST_ACTION_PT", 1485 "NMI_INTERRUPT_DATA_ACTION_PT", 1486 "NMI_TRM_HW_ER", 1487 "NMI_INTERRUPT_TRM", 1488 "NMI_INTERRUPT_BREAK_POINT", 1489 "DEBUG_0", 1490 "DEBUG_1", 1491 "DEBUG_2", 1492 "DEBUG_3", 1493}; 1494 1495static struct { char *name; u8 num; } advanced_lookup[] = { 1496 { "NMI_INTERRUPT_WDG", 0x34 }, 1497 { "SYSASSERT", 0x35 }, 1498 { "UCODE_VERSION_MISMATCH", 0x37 }, 1499 { "BAD_COMMAND", 0x38 }, 1500 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 1501 { "FATAL_ERROR", 0x3D }, 1502 { "NMI_TRM_HW_ERR", 0x46 }, 1503 { "NMI_INTERRUPT_TRM", 0x4C }, 1504 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 1505 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 1506 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 1507 { "NMI_INTERRUPT_HOST", 0x66 }, 1508 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 1509 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 1510 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 1511 { "ADVANCED_SYSASSERT", 0 }, 1512}; 1513 1514static const char *desc_lookup(u32 num) 1515{ 1516 int i; 1517 int max = ARRAY_SIZE(desc_lookup_text); 1518 1519 if (num < max) 1520 return desc_lookup_text[num]; 1521 1522 max = ARRAY_SIZE(advanced_lookup) - 1; 1523 for (i = 0; i < max; i++) { 1524 if (advanced_lookup[i].num == num) 1525 break; 1526 } 1527 return advanced_lookup[i].name; 1528} 1529 1530#define ERROR_START_OFFSET (1 * sizeof(u32)) 1531#define ERROR_ELEM_SIZE (7 * sizeof(u32)) 1532 1533static void iwl_dump_nic_error_log(struct iwl_priv *priv) 1534{ 1535 struct iwl_trans *trans = priv->trans; 1536 u32 base; 1537 struct iwl_error_event_table table; 1538 1539 base = priv->device_pointers.error_event_table; 1540 if (priv->cur_ucode == IWL_UCODE_INIT) { 1541 if (!base) 1542 base = priv->fw->init_errlog_ptr; 1543 } else { 1544 if (!base) 1545 base = priv->fw->inst_errlog_ptr; 1546 } 1547 1548 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1549 IWL_ERR(priv, 1550 "Not valid error log pointer 0x%08X for %s uCode\n", 1551 base, 1552 (priv->cur_ucode == IWL_UCODE_INIT) 1553 ? "Init" : "RT"); 1554 return; 1555 } 1556 1557 /*TODO: Update dbgfs with ISR error stats obtained below */ 1558 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 1559 1560 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 1561 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 1562 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 1563 priv->status, table.valid); 1564 } 1565 1566 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low, 1567 table.data1, table.data2, table.line, 1568 table.blink1, table.blink2, table.ilink1, 1569 table.ilink2, table.bcon_time, table.gp1, 1570 table.gp2, table.gp3, table.ucode_ver, 1571 table.hw_ver, table.brd_ver); 1572 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, 1573 desc_lookup(table.error_id)); 1574 IWL_ERR(priv, "0x%08X | uPc\n", table.pc); 1575 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); 1576 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); 1577 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); 1578 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); 1579 IWL_ERR(priv, "0x%08X | data1\n", table.data1); 1580 IWL_ERR(priv, "0x%08X | data2\n", table.data2); 1581 IWL_ERR(priv, "0x%08X | line\n", table.line); 1582 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); 1583 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); 1584 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); 1585 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); 1586 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); 1587 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); 1588 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); 1589 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); 1590 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); 1591 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); 1592 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); 1593 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); 1594 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); 1595 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); 1596 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); 1597 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); 1598 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); 1599 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); 1600 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); 1601 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 1602 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 1603 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 1604 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); 1605 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); 1606} 1607 1608#define EVENT_START_OFFSET (4 * sizeof(u32)) 1609 1610/** 1611 * iwl_print_event_log - Dump error event log to syslog 1612 * 1613 */ 1614static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, 1615 u32 num_events, u32 mode, 1616 int pos, char **buf, size_t bufsz) 1617{ 1618 u32 i; 1619 u32 base; /* SRAM byte address of event log header */ 1620 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ 1621 u32 ptr; /* SRAM byte address of log data */ 1622 u32 ev, time, data; /* event log data */ 1623 unsigned long reg_flags; 1624 1625 struct iwl_trans *trans = priv->trans; 1626 1627 if (num_events == 0) 1628 return pos; 1629 1630 base = priv->device_pointers.log_event_table; 1631 if (priv->cur_ucode == IWL_UCODE_INIT) { 1632 if (!base) 1633 base = priv->fw->init_evtlog_ptr; 1634 } else { 1635 if (!base) 1636 base = priv->fw->inst_evtlog_ptr; 1637 } 1638 1639 if (mode == 0) 1640 event_size = 2 * sizeof(u32); 1641 else 1642 event_size = 3 * sizeof(u32); 1643 1644 ptr = base + EVENT_START_OFFSET + (start_idx * event_size); 1645 1646 /* Make sure device is powered up for SRAM reads */ 1647 if (!iwl_trans_grab_nic_access(trans, false, ®_flags)) 1648 return pos; 1649 1650 /* Set starting address; reads will auto-increment */ 1651 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); 1652 1653 /* "time" is actually "data" for mode 0 (no timestamp). 1654 * place event id # at far right for easier visual parsing. */ 1655 for (i = 0; i < num_events; i++) { 1656 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1657 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1658 if (mode == 0) { 1659 /* data, ev */ 1660 if (bufsz) { 1661 pos += scnprintf(*buf + pos, bufsz - pos, 1662 "EVT_LOG:0x%08x:%04u\n", 1663 time, ev); 1664 } else { 1665 trace_iwlwifi_dev_ucode_event(trans->dev, 0, 1666 time, ev); 1667 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", 1668 time, ev); 1669 } 1670 } else { 1671 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); 1672 if (bufsz) { 1673 pos += scnprintf(*buf + pos, bufsz - pos, 1674 "EVT_LOGT:%010u:0x%08x:%04u\n", 1675 time, data, ev); 1676 } else { 1677 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", 1678 time, data, ev); 1679 trace_iwlwifi_dev_ucode_event(trans->dev, time, 1680 data, ev); 1681 } 1682 } 1683 } 1684 1685 /* Allow device to power down */ 1686 iwl_trans_release_nic_access(trans, ®_flags); 1687 return pos; 1688} 1689 1690/** 1691 * iwl_print_last_event_logs - Dump the newest # of event log to syslog 1692 */ 1693static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, 1694 u32 num_wraps, u32 next_entry, 1695 u32 size, u32 mode, 1696 int pos, char **buf, size_t bufsz) 1697{ 1698 /* 1699 * display the newest DEFAULT_LOG_ENTRIES entries 1700 * i.e the entries just before the next ont that uCode would fill. 1701 */ 1702 if (num_wraps) { 1703 if (next_entry < size) { 1704 pos = iwl_print_event_log(priv, 1705 capacity - (size - next_entry), 1706 size - next_entry, mode, 1707 pos, buf, bufsz); 1708 pos = iwl_print_event_log(priv, 0, 1709 next_entry, mode, 1710 pos, buf, bufsz); 1711 } else 1712 pos = iwl_print_event_log(priv, next_entry - size, 1713 size, mode, pos, buf, bufsz); 1714 } else { 1715 if (next_entry < size) { 1716 pos = iwl_print_event_log(priv, 0, next_entry, 1717 mode, pos, buf, bufsz); 1718 } else { 1719 pos = iwl_print_event_log(priv, next_entry - size, 1720 size, mode, pos, buf, bufsz); 1721 } 1722 } 1723 return pos; 1724} 1725 1726#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) 1727 1728int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, 1729 char **buf) 1730{ 1731 u32 base; /* SRAM byte address of event log header */ 1732 u32 capacity; /* event log capacity in # entries */ 1733 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ 1734 u32 num_wraps; /* # times uCode wrapped to top of log */ 1735 u32 next_entry; /* index of next entry to be written by uCode */ 1736 u32 size; /* # entries that we'll print */ 1737 u32 logsize; 1738 int pos = 0; 1739 size_t bufsz = 0; 1740 struct iwl_trans *trans = priv->trans; 1741 1742 base = priv->device_pointers.log_event_table; 1743 if (priv->cur_ucode == IWL_UCODE_INIT) { 1744 logsize = priv->fw->init_evtlog_size; 1745 if (!base) 1746 base = priv->fw->init_evtlog_ptr; 1747 } else { 1748 logsize = priv->fw->inst_evtlog_size; 1749 if (!base) 1750 base = priv->fw->inst_evtlog_ptr; 1751 } 1752 1753 if (!iwlagn_hw_valid_rtc_data_addr(base)) { 1754 IWL_ERR(priv, 1755 "Invalid event log pointer 0x%08X for %s uCode\n", 1756 base, 1757 (priv->cur_ucode == IWL_UCODE_INIT) 1758 ? "Init" : "RT"); 1759 return -EINVAL; 1760 } 1761 1762 /* event log header */ 1763 capacity = iwl_trans_read_mem32(trans, base); 1764 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32))); 1765 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32))); 1766 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32))); 1767 1768 if (capacity > logsize) { 1769 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " 1770 "entries\n", capacity, logsize); 1771 capacity = logsize; 1772 } 1773 1774 if (next_entry > logsize) { 1775 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", 1776 next_entry, logsize); 1777 next_entry = logsize; 1778 } 1779 1780 size = num_wraps ? capacity : next_entry; 1781 1782 /* bail out if nothing in log */ 1783 if (size == 0) { 1784 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); 1785 return pos; 1786 } 1787 1788 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log) 1789 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) 1790 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; 1791 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", 1792 size); 1793 1794#ifdef CONFIG_IWLWIFI_DEBUG 1795 if (buf) { 1796 if (full_log) 1797 bufsz = capacity * 48; 1798 else 1799 bufsz = size * 48; 1800 *buf = kmalloc(bufsz, GFP_KERNEL); 1801 if (!*buf) 1802 return -ENOMEM; 1803 } 1804 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) { 1805 /* 1806 * if uCode has wrapped back to top of log, 1807 * start at the oldest entry, 1808 * i.e the next one that uCode would fill. 1809 */ 1810 if (num_wraps) 1811 pos = iwl_print_event_log(priv, next_entry, 1812 capacity - next_entry, mode, 1813 pos, buf, bufsz); 1814 /* (then/else) start at top of log */ 1815 pos = iwl_print_event_log(priv, 0, 1816 next_entry, mode, pos, buf, bufsz); 1817 } else 1818 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1819 next_entry, size, mode, 1820 pos, buf, bufsz); 1821#else 1822 pos = iwl_print_last_event_logs(priv, capacity, num_wraps, 1823 next_entry, size, mode, 1824 pos, buf, bufsz); 1825#endif 1826 return pos; 1827} 1828 1829static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) 1830{ 1831 unsigned int reload_msec; 1832 unsigned long reload_jiffies; 1833 1834 if (iwl_have_debug_level(IWL_DL_FW_ERRORS)) 1835 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); 1836 1837 /* uCode is no longer loaded. */ 1838 priv->ucode_loaded = false; 1839 1840 /* Set the FW error flag -- cleared on iwl_down */ 1841 set_bit(STATUS_FW_ERROR, &priv->status); 1842 1843 iwl_abort_notification_waits(&priv->notif_wait); 1844 1845 /* Keep the restart process from trying to send host 1846 * commands by clearing the ready bit */ 1847 clear_bit(STATUS_READY, &priv->status); 1848 1849 if (!ondemand) { 1850 /* 1851 * If firmware keep reloading, then it indicate something 1852 * serious wrong and firmware having problem to recover 1853 * from it. Instead of keep trying which will fill the syslog 1854 * and hang the system, let's just stop it 1855 */ 1856 reload_jiffies = jiffies; 1857 reload_msec = jiffies_to_msecs((long) reload_jiffies - 1858 (long) priv->reload_jiffies); 1859 priv->reload_jiffies = reload_jiffies; 1860 if (reload_msec <= IWL_MIN_RELOAD_DURATION) { 1861 priv->reload_count++; 1862 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { 1863 IWL_ERR(priv, "BUG_ON, Stop restarting\n"); 1864 return; 1865 } 1866 } else 1867 priv->reload_count = 0; 1868 } 1869 1870 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { 1871 if (iwlwifi_mod_params.restart_fw) { 1872 IWL_DEBUG_FW_ERRORS(priv, 1873 "Restarting adapter due to uCode error.\n"); 1874 queue_work(priv->workqueue, &priv->restart); 1875 } else 1876 IWL_DEBUG_FW_ERRORS(priv, 1877 "Detected FW error, but not restarting\n"); 1878 } 1879} 1880 1881static void iwl_nic_error(struct iwl_op_mode *op_mode) 1882{ 1883 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1884 1885 IWL_ERR(priv, "Loaded firmware version: %s\n", 1886 priv->fw->fw_version); 1887 1888 iwl_dump_nic_error_log(priv); 1889 iwl_dump_nic_event_log(priv, false, NULL); 1890 1891 iwlagn_fw_error(priv, false); 1892} 1893 1894static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode) 1895{ 1896 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1897 1898 if (!iwl_check_for_ct_kill(priv)) { 1899 IWL_ERR(priv, "Restarting adapter queue is full\n"); 1900 iwlagn_fw_error(priv, false); 1901 } 1902} 1903 1904#define EEPROM_RF_CONFIG_TYPE_MAX 0x3 1905 1906static void iwl_nic_config(struct iwl_op_mode *op_mode) 1907{ 1908 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1909 1910 /* SKU Control */ 1911 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1912 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 1913 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP, 1914 (CSR_HW_REV_STEP(priv->trans->hw_rev) << 1915 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) | 1916 (CSR_HW_REV_DASH(priv->trans->hw_rev) << 1917 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH)); 1918 1919 /* write radio config values to register */ 1920 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) { 1921 u32 reg_val = 1922 priv->nvm_data->radio_cfg_type << 1923 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | 1924 priv->nvm_data->radio_cfg_step << 1925 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | 1926 priv->nvm_data->radio_cfg_dash << 1927 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 1928 1929 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, 1930 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 1931 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 1932 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, 1933 reg_val); 1934 1935 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", 1936 priv->nvm_data->radio_cfg_type, 1937 priv->nvm_data->radio_cfg_step, 1938 priv->nvm_data->radio_cfg_dash); 1939 } else { 1940 WARN_ON(1); 1941 } 1942 1943 /* set CSR_HW_CONFIG_REG for uCode use */ 1944 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, 1945 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 1946 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); 1947 1948 /* W/A : NIC is stuck in a reset state after Early PCIe power off 1949 * (PCIe power is lost before PERST# is asserted), 1950 * causing ME FW to lose ownership and not being able to obtain it back. 1951 */ 1952 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, 1953 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 1954 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 1955 1956 if (priv->lib->nic_config) 1957 priv->lib->nic_config(priv); 1958} 1959 1960static void iwl_wimax_active(struct iwl_op_mode *op_mode) 1961{ 1962 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1963 1964 clear_bit(STATUS_READY, &priv->status); 1965 IWL_ERR(priv, "RF is used by WiMAX\n"); 1966} 1967 1968static void iwl_stop_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_inc_return(&priv->queue_stop_count[mq]) > 1) { 1977 IWL_DEBUG_TX_QUEUES(priv, 1978 "queue %d (mac80211 %d) already stopped\n", 1979 queue, mq); 1980 return; 1981 } 1982 1983 set_bit(mq, &priv->transport_queue_stop); 1984 ieee80211_stop_queue(priv->hw, mq); 1985} 1986 1987static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 1988{ 1989 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1990 int mq = priv->queue_to_mac80211[queue]; 1991 1992 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 1993 return; 1994 1995 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { 1996 IWL_DEBUG_TX_QUEUES(priv, 1997 "queue %d (mac80211 %d) already awake\n", 1998 queue, mq); 1999 return; 2000 } 2001 2002 clear_bit(mq, &priv->transport_queue_stop); 2003 2004 if (!priv->passive_no_rx) 2005 ieee80211_wake_queue(priv->hw, mq); 2006} 2007 2008void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) 2009{ 2010 int mq; 2011 2012 if (!priv->passive_no_rx) 2013 return; 2014 2015 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { 2016 if (!test_bit(mq, &priv->transport_queue_stop)) { 2017 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq); 2018 ieee80211_wake_queue(priv->hw, mq); 2019 } else { 2020 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq); 2021 } 2022 } 2023 2024 priv->passive_no_rx = false; 2025} 2026 2027static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 2028{ 2029 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2030 struct ieee80211_tx_info *info; 2031 2032 info = IEEE80211_SKB_CB(skb); 2033 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); 2034 ieee80211_free_txskb(priv->hw, skb); 2035} 2036 2037static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 2038{ 2039 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2040 2041 if (state) 2042 set_bit(STATUS_RF_KILL_HW, &priv->status); 2043 else 2044 clear_bit(STATUS_RF_KILL_HW, &priv->status); 2045 2046 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); 2047 2048 return false; 2049} 2050 2051static void iwl_napi_add(struct iwl_op_mode *op_mode, 2052 struct napi_struct *napi, 2053 struct net_device *napi_dev, 2054 int (*poll)(struct napi_struct *, int), 2055 int weight) 2056{ 2057 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 2058 2059 ieee80211_napi_add(priv->hw, napi, napi_dev, poll, weight); 2060} 2061 2062static const struct iwl_op_mode_ops iwl_dvm_ops = { 2063 .start = iwl_op_mode_dvm_start, 2064 .stop = iwl_op_mode_dvm_stop, 2065 .rx = iwl_rx_dispatch, 2066 .queue_full = iwl_stop_sw_queue, 2067 .queue_not_full = iwl_wake_sw_queue, 2068 .hw_rf_kill = iwl_set_hw_rfkill_state, 2069 .free_skb = iwl_free_skb, 2070 .nic_error = iwl_nic_error, 2071 .cmd_queue_full = iwl_cmd_queue_full, 2072 .nic_config = iwl_nic_config, 2073 .wimax_active = iwl_wimax_active, 2074 .napi_add = iwl_napi_add, 2075}; 2076 2077/***************************************************************************** 2078 * 2079 * driver and module entry point 2080 * 2081 *****************************************************************************/ 2082static int __init iwl_init(void) 2083{ 2084 2085 int ret; 2086 2087 ret = iwlagn_rate_control_register(); 2088 if (ret) { 2089 pr_err("Unable to register rate control algorithm: %d\n", ret); 2090 return ret; 2091 } 2092 2093 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); 2094 if (ret) { 2095 pr_err("Unable to register op_mode: %d\n", ret); 2096 iwlagn_rate_control_unregister(); 2097 } 2098 2099 return ret; 2100} 2101module_init(iwl_init); 2102 2103static void __exit iwl_exit(void) 2104{ 2105 iwl_opmode_deregister("iwldvm"); 2106 iwlagn_rate_control_unregister(); 2107} 2108module_exit(iwl_exit); 2109