2157 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/******************************************************************************3 *4 * Copyright(c) 2003 - 2014, 2018 - 2022 Intel Corporation. All rights reserved.5 * Copyright(c) 2024 Intel Corporation. All rights reserved.6 * Copyright(c) 2015 Intel Deutschland GmbH7 *8 * Portions of this file are derived from the ipw3945 project, as well9 * as portions of the ieee80211 subsystem header files.10 *****************************************************************************/11 12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt13 14#include <linux/kernel.h>15#include <linux/module.h>16#include <linux/init.h>17#include <linux/slab.h>18#include <linux/delay.h>19#include <linux/sched.h>20#include <linux/skbuff.h>21#include <linux/netdevice.h>22#include <linux/etherdevice.h>23#include <linux/if_arp.h>24 25#include <net/mac80211.h>26 27#include <asm/div64.h>28 29#include "iwl-nvm-utils.h"30#include "iwl-io.h"31#include "iwl-trans.h"32#include "iwl-op-mode.h"33#include "iwl-drv.h"34#include "iwl-modparams.h"35#include "iwl-prph.h"36 37#include "dev.h"38#include "calib.h"39#include "agn.h"40 41 42/******************************************************************************43 *44 * module boiler plate45 *46 ******************************************************************************/47 48#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"49MODULE_DESCRIPTION(DRV_DESCRIPTION);50MODULE_LICENSE("GPL");51MODULE_IMPORT_NS(IWLWIFI);52 53/* Please keep this array *SORTED* by hex value.54 * Access is done through binary search.55 * A warning will be triggered on violation.56 */57static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = {58 HCMD_NAME(REPLY_ALIVE),59 HCMD_NAME(REPLY_ERROR),60 HCMD_NAME(REPLY_ECHO),61 HCMD_NAME(REPLY_RXON),62 HCMD_NAME(REPLY_RXON_ASSOC),63 HCMD_NAME(REPLY_QOS_PARAM),64 HCMD_NAME(REPLY_RXON_TIMING),65 HCMD_NAME(REPLY_ADD_STA),66 HCMD_NAME(REPLY_REMOVE_STA),67 HCMD_NAME(REPLY_REMOVE_ALL_STA),68 HCMD_NAME(REPLY_TX),69 HCMD_NAME(REPLY_TXFIFO_FLUSH),70 HCMD_NAME(REPLY_WEPKEY),71 HCMD_NAME(REPLY_LEDS_CMD),72 HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD),73 HCMD_NAME(COEX_PRIORITY_TABLE_CMD),74 HCMD_NAME(COEX_MEDIUM_NOTIFICATION),75 HCMD_NAME(COEX_EVENT_CMD),76 HCMD_NAME(TEMPERATURE_NOTIFICATION),77 HCMD_NAME(CALIBRATION_CFG_CMD),78 HCMD_NAME(CALIBRATION_RES_NOTIFICATION),79 HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION),80 HCMD_NAME(REPLY_QUIET_CMD),81 HCMD_NAME(REPLY_CHANNEL_SWITCH),82 HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION),83 HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD),84 HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION),85 HCMD_NAME(POWER_TABLE_CMD),86 HCMD_NAME(PM_SLEEP_NOTIFICATION),87 HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC),88 HCMD_NAME(REPLY_SCAN_CMD),89 HCMD_NAME(REPLY_SCAN_ABORT_CMD),90 HCMD_NAME(SCAN_START_NOTIFICATION),91 HCMD_NAME(SCAN_RESULTS_NOTIFICATION),92 HCMD_NAME(SCAN_COMPLETE_NOTIFICATION),93 HCMD_NAME(BEACON_NOTIFICATION),94 HCMD_NAME(REPLY_TX_BEACON),95 HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION),96 HCMD_NAME(REPLY_TX_POWER_DBM_CMD),97 HCMD_NAME(QUIET_NOTIFICATION),98 HCMD_NAME(REPLY_TX_PWR_TABLE_CMD),99 HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1),100 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),101 HCMD_NAME(MEASURE_ABORT_NOTIFICATION),102 HCMD_NAME(REPLY_BT_CONFIG),103 HCMD_NAME(REPLY_STATISTICS_CMD),104 HCMD_NAME(STATISTICS_NOTIFICATION),105 HCMD_NAME(REPLY_CARD_STATE_CMD),106 HCMD_NAME(CARD_STATE_NOTIFICATION),107 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),108 HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD),109 HCMD_NAME(SENSITIVITY_CMD),110 HCMD_NAME(REPLY_PHY_CALIBRATION_CMD),111 HCMD_NAME(REPLY_WIPAN_PARAMS),112 HCMD_NAME(REPLY_WIPAN_RXON),113 HCMD_NAME(REPLY_WIPAN_RXON_TIMING),114 HCMD_NAME(REPLY_WIPAN_RXON_ASSOC),115 HCMD_NAME(REPLY_WIPAN_QOS_PARAM),116 HCMD_NAME(REPLY_WIPAN_WEPKEY),117 HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH),118 HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION),119 HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE),120 HCMD_NAME(REPLY_RX_PHY_CMD),121 HCMD_NAME(REPLY_RX_MPDU_CMD),122 HCMD_NAME(REPLY_RX),123 HCMD_NAME(REPLY_COMPRESSED_BA),124 HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE),125 HCMD_NAME(REPLY_BT_COEX_PROT_ENV),126 HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF),127 HCMD_NAME(REPLY_D3_CONFIG),128 HCMD_NAME(REPLY_WOWLAN_PATTERNS),129 HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER),130 HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS),131 HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS),132 HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL),133 HCMD_NAME(REPLY_WOWLAN_GET_STATUS),134};135 136static const struct iwl_hcmd_arr iwl_dvm_groups[] = {137 [0x0] = HCMD_ARR(iwl_dvm_cmd_names),138};139 140static const struct iwl_op_mode_ops iwl_dvm_ops;141 142void iwl_update_chain_flags(struct iwl_priv *priv)143{144 struct iwl_rxon_context *ctx;145 146 for_each_context(priv, ctx) {147 iwlagn_set_rxon_chain(priv, ctx);148 if (ctx->active.rx_chain != ctx->staging.rx_chain)149 iwlagn_commit_rxon(priv, ctx);150 }151}152 153/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */154static void iwl_set_beacon_tim(struct iwl_priv *priv,155 struct iwl_tx_beacon_cmd *tx_beacon_cmd,156 u8 *beacon, u32 frame_size)157{158 u16 tim_idx;159 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;160 161 /*162 * The index is relative to frame start but we start looking at the163 * variable-length part of the beacon.164 */165 tim_idx = mgmt->u.beacon.variable - beacon;166 167 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */168 while ((tim_idx < (frame_size - 2)) &&169 (beacon[tim_idx] != WLAN_EID_TIM))170 tim_idx += beacon[tim_idx+1] + 2;171 172 /* If TIM field was found, set variables */173 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {174 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);175 tx_beacon_cmd->tim_size = beacon[tim_idx+1];176 } else177 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");178}179 180int iwlagn_send_beacon_cmd(struct iwl_priv *priv)181{182 struct iwl_tx_beacon_cmd *tx_beacon_cmd;183 struct iwl_host_cmd cmd = {184 .id = REPLY_TX_BEACON,185 };186 struct ieee80211_tx_info *info;187 u32 frame_size;188 u32 rate_flags;189 u32 rate;190 191 /*192 * We have to set up the TX command, the TX Beacon command, and the193 * beacon contents.194 */195 196 lockdep_assert_held(&priv->mutex);197 198 if (!priv->beacon_ctx) {199 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");200 return 0;201 }202 203 if (WARN_ON(!priv->beacon_skb))204 return -EINVAL;205 206 /* Allocate beacon command */207 if (!priv->beacon_cmd)208 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);209 tx_beacon_cmd = priv->beacon_cmd;210 if (!tx_beacon_cmd)211 return -ENOMEM;212 213 frame_size = priv->beacon_skb->len;214 215 /* Set up TX command fields */216 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);217 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;218 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;219 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |220 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;221 222 /* Set up TX beacon command fields */223 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,224 frame_size);225 226 /* Set up packet rate and flags */227 info = IEEE80211_SKB_CB(priv->beacon_skb);228 229 /*230 * Let's set up the rate at least somewhat correctly;231 * it will currently not actually be used by the uCode,232 * it uses the broadcast station's rate instead.233 */234 if (info->control.rates[0].idx < 0 ||235 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)236 rate = 0;237 else238 rate = info->control.rates[0].idx;239 240 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,241 priv->nvm_data->valid_tx_ant);242 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);243 244 /* In mac80211, rates for 5 GHz start at 0 */245 if (info->band == NL80211_BAND_5GHZ)246 rate += IWL_FIRST_OFDM_RATE;247 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)248 rate_flags |= RATE_MCS_CCK_MSK;249 250 tx_beacon_cmd->tx.rate_n_flags =251 iwl_hw_set_rate_n_flags(rate, rate_flags);252 253 /* Submit command */254 cmd.len[0] = sizeof(*tx_beacon_cmd);255 cmd.data[0] = tx_beacon_cmd;256 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;257 cmd.len[1] = frame_size;258 cmd.data[1] = priv->beacon_skb->data;259 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;260 261 return iwl_dvm_send_cmd(priv, &cmd);262}263 264static void iwl_bg_beacon_update(struct work_struct *work)265{266 struct iwl_priv *priv =267 container_of(work, struct iwl_priv, beacon_update);268 struct sk_buff *beacon;269 270 mutex_lock(&priv->mutex);271 if (!priv->beacon_ctx) {272 IWL_ERR(priv, "updating beacon w/o beacon context!\n");273 goto out;274 }275 276 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {277 /*278 * The ucode will send beacon notifications even in279 * IBSS mode, but we don't want to process them. But280 * we need to defer the type check to here due to281 * requiring locking around the beacon_ctx access.282 */283 goto out;284 }285 286 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */287 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif, 0);288 if (!beacon) {289 IWL_ERR(priv, "update beacon failed -- keeping old\n");290 goto out;291 }292 293 /* new beacon skb is allocated every time; dispose previous.*/294 dev_kfree_skb(priv->beacon_skb);295 296 priv->beacon_skb = beacon;297 298 iwlagn_send_beacon_cmd(priv);299 out:300 mutex_unlock(&priv->mutex);301}302 303static void iwl_bg_bt_runtime_config(struct work_struct *work)304{305 struct iwl_priv *priv =306 container_of(work, struct iwl_priv, bt_runtime_config);307 308 mutex_lock(&priv->mutex);309 if (test_bit(STATUS_EXIT_PENDING, &priv->status))310 goto out;311 312 /* dont send host command if rf-kill is on */313 if (!iwl_is_ready_rf(priv))314 goto out;315 316 iwlagn_send_advance_bt_config(priv);317out:318 mutex_unlock(&priv->mutex);319}320 321static void iwl_bg_bt_full_concurrency(struct work_struct *work)322{323 struct iwl_priv *priv =324 container_of(work, struct iwl_priv, bt_full_concurrency);325 struct iwl_rxon_context *ctx;326 327 mutex_lock(&priv->mutex);328 329 if (test_bit(STATUS_EXIT_PENDING, &priv->status))330 goto out;331 332 /* dont send host command if rf-kill is on */333 if (!iwl_is_ready_rf(priv))334 goto out;335 336 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",337 priv->bt_full_concurrent ?338 "full concurrency" : "3-wire");339 340 /*341 * LQ & RXON updated cmds must be sent before BT Config cmd342 * to avoid 3-wire collisions343 */344 for_each_context(priv, ctx) {345 iwlagn_set_rxon_chain(priv, ctx);346 iwlagn_commit_rxon(priv, ctx);347 }348 349 iwlagn_send_advance_bt_config(priv);350out:351 mutex_unlock(&priv->mutex);352}353 354int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)355{356 struct iwl_statistics_cmd statistics_cmd = {357 .configuration_flags =358 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,359 };360 361 if (flags & CMD_ASYNC)362 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,363 CMD_ASYNC,364 sizeof(struct iwl_statistics_cmd),365 &statistics_cmd);366 else367 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,368 sizeof(struct iwl_statistics_cmd),369 &statistics_cmd);370}371 372/*373 * iwl_bg_statistics_periodic - Timer callback to queue statistics374 *375 * This callback is provided in order to send a statistics request.376 *377 * This timer function is continually reset to execute within378 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION379 * was received. We need to ensure we receive the statistics in order380 * to update the temperature used for calibrating the TXPOWER.381 */382static void iwl_bg_statistics_periodic(struct timer_list *t)383{384 struct iwl_priv *priv = from_timer(priv, t, statistics_periodic);385 386 if (test_bit(STATUS_EXIT_PENDING, &priv->status))387 return;388 389 /* dont send host command if rf-kill is on */390 if (!iwl_is_ready_rf(priv))391 return;392 393 iwl_send_statistics_request(priv, CMD_ASYNC, false);394}395 396 397static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,398 u32 start_idx, u32 num_events,399 u32 capacity, u32 mode)400{401 u32 i;402 u32 ptr; /* SRAM byte address of log data */403 u32 ev, time, data; /* event log data */404 405 if (mode == 0)406 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));407 else408 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));409 410 /* Make sure device is powered up for SRAM reads */411 if (!iwl_trans_grab_nic_access(priv->trans))412 return;413 414 /* Set starting address; reads will auto-increment */415 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);416 417 /*418 * Refuse to read more than would have fit into the log from419 * the current start_idx. This used to happen due to the race420 * described below, but now WARN because the code below should421 * prevent it from happening here.422 */423 if (WARN_ON(num_events > capacity - start_idx))424 num_events = capacity - start_idx;425 426 /*427 * "time" is actually "data" for mode 0 (no timestamp).428 * place event id # at far right for easier visual parsing.429 */430 for (i = 0; i < num_events; i++) {431 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);432 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);433 if (mode == 0) {434 trace_iwlwifi_dev_ucode_cont_event(435 priv->trans->dev, 0, time, ev);436 } else {437 data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);438 trace_iwlwifi_dev_ucode_cont_event(439 priv->trans->dev, time, data, ev);440 }441 }442 /* Allow device to power down */443 iwl_trans_release_nic_access(priv->trans);444}445 446static void iwl_continuous_event_trace(struct iwl_priv *priv)447{448 u32 capacity; /* event log capacity in # entries */449 struct {450 u32 capacity;451 u32 mode;452 u32 wrap_counter;453 u32 write_counter;454 } __packed read;455 u32 base; /* SRAM byte address of event log header */456 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */457 u32 num_wraps; /* # times uCode wrapped to top of log */458 u32 next_entry; /* index of next entry to be written by uCode */459 460 base = priv->device_pointers.log_event_table;461 if (iwlagn_hw_valid_rtc_data_addr(base)) {462 iwl_trans_read_mem_bytes(priv->trans, base,463 &read, sizeof(read));464 capacity = read.capacity;465 mode = read.mode;466 num_wraps = read.wrap_counter;467 next_entry = read.write_counter;468 } else469 return;470 471 /*472 * Unfortunately, the uCode doesn't use temporary variables.473 * Therefore, it can happen that we read next_entry == capacity,474 * which really means next_entry == 0.475 */476 if (unlikely(next_entry == capacity))477 next_entry = 0;478 /*479 * Additionally, the uCode increases the write pointer before480 * the wraps counter, so if the write pointer is smaller than481 * the old write pointer (wrap occurred) but we read that no482 * wrap occurred, we actually read between the next_entry and483 * num_wraps update (this does happen in practice!!) -- take484 * that into account by increasing num_wraps.485 */486 if (unlikely(next_entry < priv->event_log.next_entry &&487 num_wraps == priv->event_log.num_wraps))488 num_wraps++;489 490 if (num_wraps == priv->event_log.num_wraps) {491 iwl_print_cont_event_trace(492 priv, base, priv->event_log.next_entry,493 next_entry - priv->event_log.next_entry,494 capacity, mode);495 496 priv->event_log.non_wraps_count++;497 } else {498 if (num_wraps - priv->event_log.num_wraps > 1)499 priv->event_log.wraps_more_count++;500 else501 priv->event_log.wraps_once_count++;502 503 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,504 num_wraps - priv->event_log.num_wraps,505 next_entry, priv->event_log.next_entry);506 507 if (next_entry < priv->event_log.next_entry) {508 iwl_print_cont_event_trace(509 priv, base, priv->event_log.next_entry,510 capacity - priv->event_log.next_entry,511 capacity, mode);512 513 iwl_print_cont_event_trace(514 priv, base, 0, next_entry, capacity, mode);515 } else {516 iwl_print_cont_event_trace(517 priv, base, next_entry,518 capacity - next_entry,519 capacity, mode);520 521 iwl_print_cont_event_trace(522 priv, base, 0, next_entry, capacity, mode);523 }524 }525 526 priv->event_log.num_wraps = num_wraps;527 priv->event_log.next_entry = next_entry;528}529 530/*531 * iwl_bg_ucode_trace - Timer callback to log ucode event532 *533 * The timer is continually set to execute every534 * UCODE_TRACE_PERIOD milliseconds after the last timer expired535 * this function is to perform continuous uCode event logging operation536 * if enabled537 */538static void iwl_bg_ucode_trace(struct timer_list *t)539{540 struct iwl_priv *priv = from_timer(priv, t, ucode_trace);541 542 if (test_bit(STATUS_EXIT_PENDING, &priv->status))543 return;544 545 if (priv->event_log.ucode_trace) {546 iwl_continuous_event_trace(priv);547 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */548 mod_timer(&priv->ucode_trace,549 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));550 }551}552 553static void iwl_bg_tx_flush(struct work_struct *work)554{555 struct iwl_priv *priv =556 container_of(work, struct iwl_priv, tx_flush);557 558 if (test_bit(STATUS_EXIT_PENDING, &priv->status))559 return;560 561 /* do nothing if rf-kill is on */562 if (!iwl_is_ready_rf(priv))563 return;564 565 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");566 iwlagn_dev_txfifo_flush(priv);567}568 569/*570 * queue/FIFO/AC mapping definitions571 */572 573static const u8 iwlagn_bss_ac_to_fifo[] = {574 IWL_TX_FIFO_VO,575 IWL_TX_FIFO_VI,576 IWL_TX_FIFO_BE,577 IWL_TX_FIFO_BK,578};579 580static const u8 iwlagn_bss_ac_to_queue[] = {581 0, 1, 2, 3,582};583 584static const u8 iwlagn_pan_ac_to_fifo[] = {585 IWL_TX_FIFO_VO_IPAN,586 IWL_TX_FIFO_VI_IPAN,587 IWL_TX_FIFO_BE_IPAN,588 IWL_TX_FIFO_BK_IPAN,589};590 591static const u8 iwlagn_pan_ac_to_queue[] = {592 7, 6, 5, 4,593};594 595static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)596{597 int i;598 599 /*600 * The default context is always valid,601 * the PAN context depends on uCode.602 */603 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);604 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)605 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);606 607 for (i = 0; i < NUM_IWL_RXON_CTX; i++)608 priv->contexts[i].ctxid = i;609 610 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;611 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;612 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;613 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;614 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;615 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;616 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;617 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;618 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;619 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =620 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);621 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =622 BIT(NL80211_IFTYPE_STATION);623 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;624 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;625 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;626 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;627 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,628 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));629 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,630 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));631 632 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;633 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =634 REPLY_WIPAN_RXON_TIMING;635 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =636 REPLY_WIPAN_RXON_ASSOC;637 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;638 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;639 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;640 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;641 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;642 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =643 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);644 645 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;646 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;647 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;648 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,649 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));650 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,651 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));652 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;653 654 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);655}656 657static void iwl_rf_kill_ct_config(struct iwl_priv *priv)658{659 struct iwl_ct_kill_config cmd;660 struct iwl_ct_kill_throttling_config adv_cmd;661 int ret = 0;662 663 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,664 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);665 666 priv->thermal_throttle.ct_kill_toggle = false;667 668 if (priv->lib->support_ct_kill_exit) {669 adv_cmd.critical_temperature_enter =670 cpu_to_le32(priv->hw_params.ct_kill_threshold);671 adv_cmd.critical_temperature_exit =672 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);673 674 ret = iwl_dvm_send_cmd_pdu(priv,675 REPLY_CT_KILL_CONFIG_CMD,676 0, sizeof(adv_cmd), &adv_cmd);677 if (ret)678 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");679 else680 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "681 "succeeded, critical temperature enter is %d,"682 "exit is %d\n",683 priv->hw_params.ct_kill_threshold,684 priv->hw_params.ct_kill_exit_threshold);685 } else {686 cmd.critical_temperature_R =687 cpu_to_le32(priv->hw_params.ct_kill_threshold);688 689 ret = iwl_dvm_send_cmd_pdu(priv,690 REPLY_CT_KILL_CONFIG_CMD,691 0, sizeof(cmd), &cmd);692 if (ret)693 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");694 else695 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "696 "succeeded, "697 "critical temperature is %d\n",698 priv->hw_params.ct_kill_threshold);699 }700}701 702static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)703{704 struct iwl_calib_cfg_cmd calib_cfg_cmd;705 struct iwl_host_cmd cmd = {706 .id = CALIBRATION_CFG_CMD,707 .len = { sizeof(struct iwl_calib_cfg_cmd), },708 .data = { &calib_cfg_cmd, },709 };710 711 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));712 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;713 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);714 715 return iwl_dvm_send_cmd(priv, &cmd);716}717 718 719static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)720{721 struct iwl_tx_ant_config_cmd tx_ant_cmd = {722 .valid = cpu_to_le32(valid_tx_ant),723 };724 725 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {726 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);727 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,728 sizeof(struct iwl_tx_ant_config_cmd),729 &tx_ant_cmd);730 } else {731 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");732 return -EOPNOTSUPP;733 }734}735 736static void iwl_send_bt_config(struct iwl_priv *priv)737{738 struct iwl_bt_cmd bt_cmd = {739 .lead_time = BT_LEAD_TIME_DEF,740 .max_kill = BT_MAX_KILL_DEF,741 .kill_ack_mask = 0,742 .kill_cts_mask = 0,743 };744 745 if (!iwlwifi_mod_params.bt_coex_active)746 bt_cmd.flags = BT_COEX_DISABLE;747 else748 bt_cmd.flags = BT_COEX_ENABLE;749 750 priv->bt_enable_flag = bt_cmd.flags;751 IWL_DEBUG_INFO(priv, "BT coex %s\n",752 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");753 754 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,755 0, sizeof(struct iwl_bt_cmd), &bt_cmd))756 IWL_ERR(priv, "failed to send BT Coex Config\n");757}758 759/*760 * iwl_alive_start - called after REPLY_ALIVE notification received761 * from protocol/runtime uCode (initialization uCode's762 * Alive gets handled by iwl_init_alive_start()).763 */764int iwl_alive_start(struct iwl_priv *priv)765{766 int ret = 0;767 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];768 769 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");770 771 /* After the ALIVE response, we can send host commands to the uCode */772 set_bit(STATUS_ALIVE, &priv->status);773 774 if (iwl_is_rfkill(priv))775 return -ERFKILL;776 777 if (priv->event_log.ucode_trace) {778 /* start collecting data now */779 mod_timer(&priv->ucode_trace, jiffies);780 }781 782 /* download priority table before any calibration request */783 if (priv->lib->bt_params &&784 priv->lib->bt_params->advanced_bt_coexist) {785 /* Configure Bluetooth device coexistence support */786 if (priv->lib->bt_params->bt_sco_disable)787 priv->bt_enable_pspoll = false;788 else789 priv->bt_enable_pspoll = true;790 791 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;792 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;793 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;794 iwlagn_send_advance_bt_config(priv);795 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;796 priv->cur_rssi_ctx = NULL;797 798 iwl_send_prio_tbl(priv);799 800 /* FIXME: w/a to force change uCode BT state machine */801 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,802 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);803 if (ret)804 return ret;805 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,806 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);807 if (ret)808 return ret;809 } else if (priv->lib->bt_params) {810 /*811 * default is 2-wire BT coexexistence support812 */813 iwl_send_bt_config(priv);814 }815 816 /*817 * Perform runtime calibrations, including DC calibration.818 */819 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);820 821 ieee80211_wake_queues(priv->hw);822 823 /* Configure Tx antenna selection based on H/W config */824 iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);825 826 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {827 struct iwl_rxon_cmd *active_rxon =828 (struct iwl_rxon_cmd *)&ctx->active;829 /* apply any changes in staging */830 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;831 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;832 } else {833 struct iwl_rxon_context *tmp;834 /* Initialize our rx_config data */835 for_each_context(priv, tmp)836 iwl_connection_init_rx_config(priv, tmp);837 838 iwlagn_set_rxon_chain(priv, ctx);839 }840 841 if (!priv->wowlan) {842 /* WoWLAN ucode will not reply in the same way, skip it */843 iwl_reset_run_time_calib(priv);844 }845 846 set_bit(STATUS_READY, &priv->status);847 848 /* Configure the adapter for unassociated operation */849 ret = iwlagn_commit_rxon(priv, ctx);850 if (ret)851 return ret;852 853 /* At this point, the NIC is initialized and operational */854 iwl_rf_kill_ct_config(priv);855 856 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");857 858 return iwl_power_update_mode(priv, true);859}860 861/**862 * iwl_clear_driver_stations - clear knowledge of all stations from driver863 * @priv: iwl priv struct864 *865 * This is called during iwl_down() to make sure that in the case866 * we're coming there from a hardware restart mac80211 will be867 * able to reconfigure stations -- if we're getting there in the868 * normal down flow then the stations will already be cleared.869 */870static void iwl_clear_driver_stations(struct iwl_priv *priv)871{872 struct iwl_rxon_context *ctx;873 874 spin_lock_bh(&priv->sta_lock);875 memset(priv->stations, 0, sizeof(priv->stations));876 priv->num_stations = 0;877 878 priv->ucode_key_table = 0;879 880 for_each_context(priv, ctx) {881 /*882 * Remove all key information that is not stored as part883 * of station information since mac80211 may not have had884 * a chance to remove all the keys. When device is885 * reconfigured by mac80211 after an error all keys will886 * be reconfigured.887 */888 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));889 ctx->key_mapping_keys = 0;890 }891 892 spin_unlock_bh(&priv->sta_lock);893}894 895void iwl_down(struct iwl_priv *priv)896{897 int exit_pending;898 899 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");900 901 lockdep_assert_held(&priv->mutex);902 903 iwl_scan_cancel_timeout(priv, 200);904 905 exit_pending =906 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);907 908 iwl_clear_ucode_stations(priv, NULL);909 iwl_dealloc_bcast_stations(priv);910 iwl_clear_driver_stations(priv);911 912 /* reset BT coex data */913 priv->bt_status = 0;914 priv->cur_rssi_ctx = NULL;915 priv->bt_is_sco = 0;916 if (priv->lib->bt_params)917 priv->bt_traffic_load =918 priv->lib->bt_params->bt_init_traffic_load;919 else920 priv->bt_traffic_load = 0;921 priv->bt_full_concurrent = false;922 priv->bt_ci_compliance = 0;923 924 /* Wipe out the EXIT_PENDING status bit if we are not actually925 * exiting the module */926 if (!exit_pending)927 clear_bit(STATUS_EXIT_PENDING, &priv->status);928 929 if (priv->mac80211_registered)930 ieee80211_stop_queues(priv->hw);931 932 priv->ucode_loaded = false;933 iwl_trans_stop_device(priv->trans);934 935 /* Set num_aux_in_flight must be done after the transport is stopped */936 atomic_set(&priv->num_aux_in_flight, 0);937 938 /* Clear out all status bits but a few that are stable across reset */939 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<940 STATUS_RF_KILL_HW |941 test_bit(STATUS_FW_ERROR, &priv->status) <<942 STATUS_FW_ERROR |943 test_bit(STATUS_EXIT_PENDING, &priv->status) <<944 STATUS_EXIT_PENDING;945 946 dev_kfree_skb(priv->beacon_skb);947 priv->beacon_skb = NULL;948}949 950/*****************************************************************************951 *952 * Workqueue callbacks953 *954 *****************************************************************************/955 956static void iwl_bg_run_time_calib_work(struct work_struct *work)957{958 struct iwl_priv *priv = container_of(work, struct iwl_priv,959 run_time_calib_work);960 961 mutex_lock(&priv->mutex);962 963 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||964 test_bit(STATUS_SCANNING, &priv->status)) {965 mutex_unlock(&priv->mutex);966 return;967 }968 969 if (priv->start_calib) {970 iwl_chain_noise_calibration(priv);971 iwl_sensitivity_calibration(priv);972 }973 974 mutex_unlock(&priv->mutex);975}976 977void iwlagn_prepare_restart(struct iwl_priv *priv)978{979 bool bt_full_concurrent;980 u8 bt_ci_compliance;981 u8 bt_load;982 u8 bt_status;983 bool bt_is_sco;984 int i;985 986 lockdep_assert_held(&priv->mutex);987 988 priv->is_open = 0;989 990 /*991 * __iwl_down() will clear the BT status variables,992 * which is correct, but when we restart we really993 * want to keep them so restore them afterwards.994 *995 * The restart process will later pick them up and996 * re-configure the hw when we reconfigure the BT997 * command.998 */999 bt_full_concurrent = priv->bt_full_concurrent;1000 bt_ci_compliance = priv->bt_ci_compliance;1001 bt_load = priv->bt_traffic_load;1002 bt_status = priv->bt_status;1003 bt_is_sco = priv->bt_is_sco;1004 1005 iwl_down(priv);1006 1007 priv->bt_full_concurrent = bt_full_concurrent;1008 priv->bt_ci_compliance = bt_ci_compliance;1009 priv->bt_traffic_load = bt_load;1010 priv->bt_status = bt_status;1011 priv->bt_is_sco = bt_is_sco;1012 1013 /* reset aggregation queues */1014 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)1015 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;1016 /* and stop counts */1017 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)1018 atomic_set(&priv->queue_stop_count[i], 0);1019 1020 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));1021}1022 1023static void iwl_bg_restart(struct work_struct *data)1024{1025 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);1026 1027 if (test_bit(STATUS_EXIT_PENDING, &priv->status))1028 return;1029 1030 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {1031 mutex_lock(&priv->mutex);1032 iwlagn_prepare_restart(priv);1033 mutex_unlock(&priv->mutex);1034 iwl_cancel_deferred_work(priv);1035 if (priv->mac80211_registered)1036 ieee80211_restart_hw(priv->hw);1037 else1038 IWL_ERR(priv,1039 "Cannot request restart before registering with mac80211\n");1040 } else {1041 WARN_ON(1);1042 }1043}1044 1045/*****************************************************************************1046 *1047 * driver setup and teardown1048 *1049 *****************************************************************************/1050 1051static void iwl_setup_deferred_work(struct iwl_priv *priv)1052{1053 priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0);1054 1055 INIT_WORK(&priv->restart, iwl_bg_restart);1056 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);1057 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);1058 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);1059 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);1060 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);1061 1062 iwl_setup_scan_deferred_work(priv);1063 1064 if (priv->lib->bt_params)1065 iwlagn_bt_setup_deferred_work(priv);1066 1067 timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0);1068 1069 timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0);1070}1071 1072void iwl_cancel_deferred_work(struct iwl_priv *priv)1073{1074 if (priv->lib->bt_params)1075 iwlagn_bt_cancel_deferred_work(priv);1076 1077 cancel_work_sync(&priv->run_time_calib_work);1078 cancel_work_sync(&priv->beacon_update);1079 1080 iwl_cancel_scan_deferred_work(priv);1081 1082 cancel_work_sync(&priv->bt_full_concurrency);1083 cancel_work_sync(&priv->bt_runtime_config);1084 1085 del_timer_sync(&priv->statistics_periodic);1086 del_timer_sync(&priv->ucode_trace);1087}1088 1089static int iwl_init_drv(struct iwl_priv *priv)1090{1091 spin_lock_init(&priv->sta_lock);1092 1093 mutex_init(&priv->mutex);1094 1095 INIT_LIST_HEAD(&priv->calib_results);1096 1097 priv->band = NL80211_BAND_2GHZ;1098 1099 priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;1100 1101 priv->iw_mode = NL80211_IFTYPE_STATION;1102 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;1103 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;1104 priv->agg_tids_count = 0;1105 1106 priv->rx_statistics_jiffies = jiffies;1107 1108 /* Choose which receivers/antennas to use */1109 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);1110 1111 iwl_init_scan_params(priv);1112 1113 /* init bt coex */1114 if (priv->lib->bt_params &&1115 priv->lib->bt_params->advanced_bt_coexist) {1116 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;1117 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;1118 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;1119 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;1120 priv->bt_duration = BT_DURATION_LIMIT_DEF;1121 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;1122 }1123 1124 return 0;1125}1126 1127static void iwl_uninit_drv(struct iwl_priv *priv)1128{1129 kfree(priv->scan_cmd);1130 kfree(priv->beacon_cmd);1131 kfree(rcu_dereference_raw(priv->noa_data));1132 iwl_calib_free_results(priv);1133#ifdef CONFIG_IWLWIFI_DEBUGFS1134 kfree(priv->wowlan_sram);1135#endif1136}1137 1138static void iwl_set_hw_params(struct iwl_priv *priv)1139{1140 if (priv->cfg->ht_params)1141 priv->hw_params.use_rts_for_aggregation =1142 priv->cfg->ht_params->use_rts_for_aggregation;1143 1144 /* Device-specific setup */1145 priv->lib->set_hw_params(priv);1146}1147 1148 1149 1150/* show what optional capabilities we have */1151static void iwl_option_config(struct iwl_priv *priv)1152{1153#ifdef CONFIG_IWLWIFI_DEBUG1154 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");1155#else1156 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");1157#endif1158 1159#ifdef CONFIG_IWLWIFI_DEBUGFS1160 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");1161#else1162 IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");1163#endif1164 1165#ifdef CONFIG_IWLWIFI_DEVICE_TRACING1166 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");1167#else1168 IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");1169#endif1170}1171 1172static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)1173{1174 struct iwl_nvm_data *data = priv->nvm_data;1175 1176 if (data->sku_cap_11n_enable &&1177 !priv->cfg->ht_params) {1178 IWL_ERR(priv, "Invalid 11n configuration\n");1179 return -EINVAL;1180 }1181 1182 if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable &&1183 !data->sku_cap_band_52ghz_enable) {1184 IWL_ERR(priv, "Invalid device sku\n");1185 return -EINVAL;1186 }1187 1188 IWL_DEBUG_INFO(priv,1189 "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",1190 data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled",1191 data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled",1192 data->sku_cap_11n_enable ? "" : "NOT", "enabled");1193 1194 priv->hw_params.tx_chains_num =1195 num_of_ant(data->valid_tx_ant);1196 if (priv->cfg->rx_with_siso_diversity)1197 priv->hw_params.rx_chains_num = 1;1198 else1199 priv->hw_params.rx_chains_num =1200 num_of_ant(data->valid_rx_ant);1201 1202 IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",1203 data->valid_tx_ant,1204 data->valid_rx_ant);1205 1206 return 0;1207}1208 1209static int iwl_nvm_check_version(struct iwl_nvm_data *data,1210 struct iwl_trans *trans)1211{1212 if (data->nvm_version >= trans->cfg->nvm_ver ||1213 data->calib_version >= trans->cfg->nvm_calib_ver) {1214 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",1215 data->nvm_version, data->calib_version);1216 return 0;1217 }1218 1219 IWL_ERR(trans,1220 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",1221 data->nvm_version, trans->cfg->nvm_ver,1222 data->calib_version, trans->cfg->nvm_calib_ver);1223 return -EINVAL;1224}1225 1226static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,1227 const struct iwl_cfg *cfg,1228 const struct iwl_fw *fw,1229 struct dentry *dbgfs_dir)1230{1231 struct iwl_priv *priv;1232 struct ieee80211_hw *hw;1233 struct iwl_op_mode *op_mode;1234 u16 num_mac;1235 u32 ucode_flags;1236 struct iwl_trans_config trans_cfg = {};1237 static const u8 no_reclaim_cmds[] = {1238 REPLY_RX_PHY_CMD,1239 REPLY_RX_MPDU_CMD,1240 REPLY_COMPRESSED_BA,1241 STATISTICS_NOTIFICATION,1242 REPLY_TX,1243 };1244 int i;1245 1246 /************************1247 * 1. Allocating HW data1248 ************************/1249 hw = iwl_alloc_all();1250 if (!hw) {1251 pr_err("%s: Cannot allocate network device\n", trans->name);1252 goto out;1253 }1254 1255 op_mode = hw->priv;1256 op_mode->ops = &iwl_dvm_ops;1257 priv = IWL_OP_MODE_GET_DVM(op_mode);1258 priv->trans = trans;1259 priv->dev = trans->dev;1260 priv->cfg = cfg;1261 priv->fw = fw;1262 1263 switch (priv->trans->trans_cfg->device_family) {1264 case IWL_DEVICE_FAMILY_1000:1265 case IWL_DEVICE_FAMILY_100:1266 priv->lib = &iwl_dvm_1000_cfg;1267 break;1268 case IWL_DEVICE_FAMILY_2000:1269 priv->lib = &iwl_dvm_2000_cfg;1270 break;1271 case IWL_DEVICE_FAMILY_105:1272 priv->lib = &iwl_dvm_105_cfg;1273 break;1274 case IWL_DEVICE_FAMILY_2030:1275 case IWL_DEVICE_FAMILY_135:1276 priv->lib = &iwl_dvm_2030_cfg;1277 break;1278 case IWL_DEVICE_FAMILY_5000:1279 priv->lib = &iwl_dvm_5000_cfg;1280 break;1281 case IWL_DEVICE_FAMILY_5150:1282 priv->lib = &iwl_dvm_5150_cfg;1283 break;1284 case IWL_DEVICE_FAMILY_6000:1285 case IWL_DEVICE_FAMILY_6000i:1286 priv->lib = &iwl_dvm_6000_cfg;1287 break;1288 case IWL_DEVICE_FAMILY_6005:1289 priv->lib = &iwl_dvm_6005_cfg;1290 break;1291 case IWL_DEVICE_FAMILY_6050:1292 case IWL_DEVICE_FAMILY_6150:1293 priv->lib = &iwl_dvm_6050_cfg;1294 break;1295 case IWL_DEVICE_FAMILY_6030:1296 priv->lib = &iwl_dvm_6030_cfg;1297 break;1298 default:1299 break;1300 }1301 1302 if (WARN_ON(!priv->lib))1303 goto out_free_hw;1304 1305 /*1306 * Populate the state variables that the transport layer needs1307 * to know about.1308 */1309 trans_cfg.op_mode = op_mode;1310 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;1311 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);1312 1313 switch (iwlwifi_mod_params.amsdu_size) {1314 case IWL_AMSDU_DEF:1315 case IWL_AMSDU_4K:1316 trans_cfg.rx_buf_size = IWL_AMSDU_4K;1317 break;1318 case IWL_AMSDU_8K:1319 trans_cfg.rx_buf_size = IWL_AMSDU_8K;1320 break;1321 case IWL_AMSDU_12K:1322 default:1323 trans_cfg.rx_buf_size = IWL_AMSDU_4K;1324 pr_err("Unsupported amsdu_size: %d\n",1325 iwlwifi_mod_params.amsdu_size);1326 }1327 1328 trans_cfg.command_groups = iwl_dvm_groups;1329 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups);1330 1331 trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;1332 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,1333 driver_data[2]);1334 1335 WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <1336 priv->trans->trans_cfg->base_params->num_of_queues);1337 1338 ucode_flags = fw->ucode_capa.flags;1339 1340 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {1341 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;1342 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;1343 } else {1344 priv->sta_key_max_num = STA_KEY_MAX_NUM;1345 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;1346 }1347 1348 /* Configure transport layer */1349 iwl_trans_configure(priv->trans, &trans_cfg);1350 1351 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;1352 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);1353 trans->command_groups = trans_cfg.command_groups;1354 trans->command_groups_size = trans_cfg.command_groups_size;1355 1356 /* At this point both hw and priv are allocated. */1357 1358 SET_IEEE80211_DEV(priv->hw, priv->trans->dev);1359 1360 iwl_option_config(priv);1361 1362 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");1363 1364 /* bt channel inhibition enabled*/1365 priv->bt_ch_announce = true;1366 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",1367 (priv->bt_ch_announce) ? "On" : "Off");1368 1369 /* these spin locks will be used in apm_ops.init and EEPROM access1370 * we should init now1371 */1372 spin_lock_init(&priv->statistics.lock);1373 1374 /***********************1375 * 2. Read REV register1376 ***********************/1377 IWL_INFO(priv, "Detected %s, REV=0x%X\n",1378 priv->trans->name, priv->trans->hw_rev);1379 1380 if (iwl_trans_start_hw(priv->trans))1381 goto out_free_hw;1382 1383 /* Read the EEPROM */1384 if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,1385 &priv->eeprom_blob_size)) {1386 IWL_ERR(priv, "Unable to init EEPROM\n");1387 goto out_free_hw;1388 }1389 1390 /* Reset chip to save power until we load uCode during "up". */1391 iwl_trans_stop_device(priv->trans);1392 1393 priv->nvm_data = iwl_parse_eeprom_data(priv->trans, priv->cfg,1394 priv->eeprom_blob,1395 priv->eeprom_blob_size);1396 if (!priv->nvm_data)1397 goto out_free_eeprom_blob;1398 1399 if (iwl_nvm_check_version(priv->nvm_data, priv->trans))1400 goto out_free_eeprom;1401 1402 if (iwl_eeprom_init_hw_params(priv))1403 goto out_free_eeprom;1404 1405 /* extract MAC Address */1406 memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);1407 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);1408 priv->hw->wiphy->addresses = priv->addresses;1409 priv->hw->wiphy->n_addresses = 1;1410 num_mac = priv->nvm_data->n_hw_addrs;1411 if (num_mac > 1) {1412 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,1413 ETH_ALEN);1414 priv->addresses[1].addr[5]++;1415 priv->hw->wiphy->n_addresses++;1416 }1417 1418 /************************1419 * 4. Setup HW constants1420 ************************/1421 iwl_set_hw_params(priv);1422 1423 if (!(priv->nvm_data->sku_cap_ipan_enable)) {1424 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");1425 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;1426 /*1427 * if not PAN, then don't support P2P -- might be a uCode1428 * packaging bug or due to the eeprom check above1429 */1430 priv->sta_key_max_num = STA_KEY_MAX_NUM;1431 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;1432 1433 /* Configure transport layer again*/1434 iwl_trans_configure(priv->trans, &trans_cfg);1435 }1436 1437 /*******************1438 * 5. Setup priv1439 *******************/1440 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {1441 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;1442 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&1443 i != IWL_DEFAULT_CMD_QUEUE_NUM &&1444 i != IWL_IPAN_CMD_QUEUE_NUM)1445 priv->queue_to_mac80211[i] = i;1446 atomic_set(&priv->queue_stop_count[i], 0);1447 }1448 1449 if (iwl_init_drv(priv))1450 goto out_free_eeprom;1451 1452 /* At this point both hw and priv are initialized. */1453 1454 /********************1455 * 6. Setup services1456 ********************/1457 iwl_setup_deferred_work(priv);1458 iwl_setup_rx_handlers(priv);1459 1460 iwl_power_initialize(priv);1461 iwl_tt_initialize(priv);1462 1463 snprintf(priv->hw->wiphy->fw_version,1464 sizeof(priv->hw->wiphy->fw_version),1465 "%.31s", fw->fw_version);1466 1467 priv->new_scan_threshold_behaviour =1468 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);1469 1470 priv->phy_calib_chain_noise_reset_cmd =1471 fw->ucode_capa.standard_phy_calibration_size;1472 priv->phy_calib_chain_noise_gain_cmd =1473 fw->ucode_capa.standard_phy_calibration_size + 1;1474 1475 /* initialize all valid contexts */1476 iwl_init_context(priv, ucode_flags);1477 1478 /**************************************************1479 * This is still part of probe() in a sense...1480 *1481 * 7. Setup and register with mac80211 and debugfs1482 **************************************************/1483 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))1484 goto out_destroy_workqueue;1485 1486 iwl_dbgfs_register(priv, dbgfs_dir);1487 1488 return op_mode;1489 1490out_destroy_workqueue:1491 iwl_tt_exit(priv);1492 iwl_cancel_deferred_work(priv);1493 destroy_workqueue(priv->workqueue);1494 priv->workqueue = NULL;1495 iwl_uninit_drv(priv);1496out_free_eeprom_blob:1497 kfree(priv->eeprom_blob);1498out_free_eeprom:1499 kfree(priv->nvm_data);1500out_free_hw:1501 ieee80211_free_hw(priv->hw);1502out:1503 op_mode = NULL;1504 return op_mode;1505}1506 1507static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)1508{1509 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);1510 1511 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");1512 1513 iwlagn_mac_unregister(priv);1514 1515 iwl_tt_exit(priv);1516 1517 kfree(priv->eeprom_blob);1518 kfree(priv->nvm_data);1519 1520 /*netif_stop_queue(dev); */1521 1522 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes1523 * priv->workqueue... so we can't take down the workqueue1524 * until now... */1525 destroy_workqueue(priv->workqueue);1526 priv->workqueue = NULL;1527 1528 iwl_uninit_drv(priv);1529 1530 dev_kfree_skb(priv->beacon_skb);1531 1532 iwl_trans_op_mode_leave(priv->trans);1533 ieee80211_free_hw(priv->hw);1534}1535 1536static const char * const desc_lookup_text[] = {1537 "OK",1538 "FAIL",1539 "BAD_PARAM",1540 "BAD_CHECKSUM",1541 "NMI_INTERRUPT_WDG",1542 "SYSASSERT",1543 "FATAL_ERROR",1544 "BAD_COMMAND",1545 "HW_ERROR_TUNE_LOCK",1546 "HW_ERROR_TEMPERATURE",1547 "ILLEGAL_CHAN_FREQ",1548 "VCC_NOT_STABLE",1549 "FH_ERROR",1550 "NMI_INTERRUPT_HOST",1551 "NMI_INTERRUPT_ACTION_PT",1552 "NMI_INTERRUPT_UNKNOWN",1553 "UCODE_VERSION_MISMATCH",1554 "HW_ERROR_ABS_LOCK",1555 "HW_ERROR_CAL_LOCK_FAIL",1556 "NMI_INTERRUPT_INST_ACTION_PT",1557 "NMI_INTERRUPT_DATA_ACTION_PT",1558 "NMI_TRM_HW_ER",1559 "NMI_INTERRUPT_TRM",1560 "NMI_INTERRUPT_BREAK_POINT",1561 "DEBUG_0",1562 "DEBUG_1",1563 "DEBUG_2",1564 "DEBUG_3",1565};1566 1567static struct { char *name; u8 num; } advanced_lookup[] = {1568 { "NMI_INTERRUPT_WDG", 0x34 },1569 { "SYSASSERT", 0x35 },1570 { "UCODE_VERSION_MISMATCH", 0x37 },1571 { "BAD_COMMAND", 0x38 },1572 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },1573 { "FATAL_ERROR", 0x3D },1574 { "NMI_TRM_HW_ERR", 0x46 },1575 { "NMI_INTERRUPT_TRM", 0x4C },1576 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },1577 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },1578 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },1579 { "NMI_INTERRUPT_HOST", 0x66 },1580 { "NMI_INTERRUPT_ACTION_PT", 0x7C },1581 { "NMI_INTERRUPT_UNKNOWN", 0x84 },1582 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },1583 { "ADVANCED_SYSASSERT", 0 },1584};1585 1586static const char *desc_lookup(u32 num)1587{1588 int i;1589 int max = ARRAY_SIZE(desc_lookup_text);1590 1591 if (num < max)1592 return desc_lookup_text[num];1593 1594 max = ARRAY_SIZE(advanced_lookup) - 1;1595 for (i = 0; i < max; i++) {1596 if (advanced_lookup[i].num == num)1597 break;1598 }1599 return advanced_lookup[i].name;1600}1601 1602#define ERROR_START_OFFSET (1 * sizeof(u32))1603#define ERROR_ELEM_SIZE (7 * sizeof(u32))1604 1605static void iwl_dump_nic_error_log(struct iwl_priv *priv)1606{1607 struct iwl_trans *trans = priv->trans;1608 u32 base;1609 struct iwl_error_event_table table;1610 1611 base = priv->device_pointers.error_event_table;1612 if (priv->cur_ucode == IWL_UCODE_INIT) {1613 if (!base)1614 base = priv->fw->init_errlog_ptr;1615 } else {1616 if (!base)1617 base = priv->fw->inst_errlog_ptr;1618 }1619 1620 if (!iwlagn_hw_valid_rtc_data_addr(base)) {1621 IWL_ERR(priv,1622 "Not valid error log pointer 0x%08X for %s uCode\n",1623 base,1624 (priv->cur_ucode == IWL_UCODE_INIT)1625 ? "Init" : "RT");1626 return;1627 }1628 1629 /*TODO: Update dbgfs with ISR error stats obtained below */1630 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));1631 1632 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {1633 IWL_ERR(trans, "Start IWL Error Log Dump:\n");1634 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",1635 priv->status, table.valid);1636 }1637 1638 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,1639 desc_lookup(table.error_id));1640 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);1641 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);1642 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);1643 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);1644 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);1645 IWL_ERR(priv, "0x%08X | data1\n", table.data1);1646 IWL_ERR(priv, "0x%08X | data2\n", table.data2);1647 IWL_ERR(priv, "0x%08X | line\n", table.line);1648 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);1649 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);1650 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);1651 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);1652 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);1653 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);1654 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);1655 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);1656 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);1657 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);1658 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);1659 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);1660 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);1661 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);1662 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);1663 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);1664 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);1665 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);1666 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);1667 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);1668 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);1669 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);1670 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);1671 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);1672}1673 1674#define EVENT_START_OFFSET (4 * sizeof(u32))1675 1676/*1677 * iwl_print_event_log - Dump error event log to syslog1678 */1679static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,1680 u32 num_events, u32 mode,1681 int pos, char **buf, size_t bufsz)1682{1683 u32 i;1684 u32 base; /* SRAM byte address of event log header */1685 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */1686 u32 ptr; /* SRAM byte address of log data */1687 u32 ev, time, data; /* event log data */1688 1689 struct iwl_trans *trans = priv->trans;1690 1691 if (num_events == 0)1692 return pos;1693 1694 base = priv->device_pointers.log_event_table;1695 if (priv->cur_ucode == IWL_UCODE_INIT) {1696 if (!base)1697 base = priv->fw->init_evtlog_ptr;1698 } else {1699 if (!base)1700 base = priv->fw->inst_evtlog_ptr;1701 }1702 1703 if (mode == 0)1704 event_size = 2 * sizeof(u32);1705 else1706 event_size = 3 * sizeof(u32);1707 1708 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);1709 1710 /* Make sure device is powered up for SRAM reads */1711 if (!iwl_trans_grab_nic_access(trans))1712 return pos;1713 1714 /* Set starting address; reads will auto-increment */1715 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);1716 1717 /* "time" is actually "data" for mode 0 (no timestamp).1718 * place event id # at far right for easier visual parsing. */1719 for (i = 0; i < num_events; i++) {1720 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);1721 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);1722 if (mode == 0) {1723 /* data, ev */1724 if (bufsz) {1725 pos += scnprintf(*buf + pos, bufsz - pos,1726 "EVT_LOG:0x%08x:%04u\n",1727 time, ev);1728 } else {1729 trace_iwlwifi_dev_ucode_event(trans->dev, 0,1730 time, ev);1731 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",1732 time, ev);1733 }1734 } else {1735 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);1736 if (bufsz) {1737 pos += scnprintf(*buf + pos, bufsz - pos,1738 "EVT_LOGT:%010u:0x%08x:%04u\n",1739 time, data, ev);1740 } else {1741 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",1742 time, data, ev);1743 trace_iwlwifi_dev_ucode_event(trans->dev, time,1744 data, ev);1745 }1746 }1747 }1748 1749 /* Allow device to power down */1750 iwl_trans_release_nic_access(trans);1751 return pos;1752}1753 1754/*1755 * iwl_print_last_event_logs - Dump the newest # of event log to syslog1756 */1757static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,1758 u32 num_wraps, u32 next_entry,1759 u32 size, u32 mode,1760 int pos, char **buf, size_t bufsz)1761{1762 /*1763 * display the newest DEFAULT_LOG_ENTRIES entries1764 * i.e the entries just before the next ont that uCode would fill.1765 */1766 if (num_wraps) {1767 if (next_entry < size) {1768 pos = iwl_print_event_log(priv,1769 capacity - (size - next_entry),1770 size - next_entry, mode,1771 pos, buf, bufsz);1772 pos = iwl_print_event_log(priv, 0,1773 next_entry, mode,1774 pos, buf, bufsz);1775 } else1776 pos = iwl_print_event_log(priv, next_entry - size,1777 size, mode, pos, buf, bufsz);1778 } else {1779 if (next_entry < size) {1780 pos = iwl_print_event_log(priv, 0, next_entry,1781 mode, pos, buf, bufsz);1782 } else {1783 pos = iwl_print_event_log(priv, next_entry - size,1784 size, mode, pos, buf, bufsz);1785 }1786 }1787 return pos;1788}1789 1790#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)1791 1792int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,1793 char **buf)1794{1795 u32 base; /* SRAM byte address of event log header */1796 u32 capacity; /* event log capacity in # entries */1797 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */1798 u32 num_wraps; /* # times uCode wrapped to top of log */1799 u32 next_entry; /* index of next entry to be written by uCode */1800 u32 size; /* # entries that we'll print */1801 u32 logsize;1802 int pos = 0;1803 size_t bufsz = 0;1804 struct iwl_trans *trans = priv->trans;1805 1806 base = priv->device_pointers.log_event_table;1807 if (priv->cur_ucode == IWL_UCODE_INIT) {1808 logsize = priv->fw->init_evtlog_size;1809 if (!base)1810 base = priv->fw->init_evtlog_ptr;1811 } else {1812 logsize = priv->fw->inst_evtlog_size;1813 if (!base)1814 base = priv->fw->inst_evtlog_ptr;1815 }1816 1817 if (!iwlagn_hw_valid_rtc_data_addr(base)) {1818 IWL_ERR(priv,1819 "Invalid event log pointer 0x%08X for %s uCode\n",1820 base,1821 (priv->cur_ucode == IWL_UCODE_INIT)1822 ? "Init" : "RT");1823 return -EINVAL;1824 }1825 1826 /* event log header */1827 capacity = iwl_trans_read_mem32(trans, base);1828 mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));1829 num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));1830 next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));1831 1832 if (capacity > logsize) {1833 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "1834 "entries\n", capacity, logsize);1835 capacity = logsize;1836 }1837 1838 if (next_entry > logsize) {1839 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",1840 next_entry, logsize);1841 next_entry = logsize;1842 }1843 1844 size = num_wraps ? capacity : next_entry;1845 1846 /* bail out if nothing in log */1847 if (size == 0) {1848 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");1849 return pos;1850 }1851 1852 if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log)1853 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)1854 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;1855 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",1856 size);1857 1858#ifdef CONFIG_IWLWIFI_DEBUG1859 if (buf) {1860 if (full_log)1861 bufsz = capacity * 48;1862 else1863 bufsz = size * 48;1864 *buf = kmalloc(bufsz, GFP_KERNEL);1865 if (!*buf)1866 return -ENOMEM;1867 }1868 if (iwl_have_debug_level(IWL_DL_FW) || full_log) {1869 /*1870 * if uCode has wrapped back to top of log,1871 * start at the oldest entry,1872 * i.e the next one that uCode would fill.1873 */1874 if (num_wraps)1875 pos = iwl_print_event_log(priv, next_entry,1876 capacity - next_entry, mode,1877 pos, buf, bufsz);1878 /* (then/else) start at top of log */1879 pos = iwl_print_event_log(priv, 0,1880 next_entry, mode, pos, buf, bufsz);1881 } else1882 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,1883 next_entry, size, mode,1884 pos, buf, bufsz);1885#else1886 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,1887 next_entry, size, mode,1888 pos, buf, bufsz);1889#endif1890 return pos;1891}1892 1893static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)1894{1895 unsigned int reload_msec;1896 unsigned long reload_jiffies;1897 1898 if (iwl_have_debug_level(IWL_DL_FW))1899 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);1900 1901 /* uCode is no longer loaded. */1902 priv->ucode_loaded = false;1903 1904 /* Set the FW error flag -- cleared on iwl_down */1905 set_bit(STATUS_FW_ERROR, &priv->status);1906 1907 iwl_abort_notification_waits(&priv->notif_wait);1908 1909 /* Keep the restart process from trying to send host1910 * commands by clearing the ready bit */1911 clear_bit(STATUS_READY, &priv->status);1912 1913 if (!ondemand) {1914 /*1915 * If firmware keep reloading, then it indicate something1916 * serious wrong and firmware having problem to recover1917 * from it. Instead of keep trying which will fill the syslog1918 * and hang the system, let's just stop it1919 */1920 reload_jiffies = jiffies;1921 reload_msec = jiffies_to_msecs((long) reload_jiffies -1922 (long) priv->reload_jiffies);1923 priv->reload_jiffies = reload_jiffies;1924 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {1925 priv->reload_count++;1926 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {1927 IWL_ERR(priv, "BUG_ON, Stop restarting\n");1928 return;1929 }1930 } else1931 priv->reload_count = 0;1932 }1933 1934 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {1935 if (iwlwifi_mod_params.fw_restart) {1936 IWL_DEBUG_FW(priv,1937 "Restarting adapter due to uCode error.\n");1938 queue_work(priv->workqueue, &priv->restart);1939 } else1940 IWL_DEBUG_FW(priv,1941 "Detected FW error, but not restarting\n");1942 }1943}1944 1945static void iwl_nic_error(struct iwl_op_mode *op_mode, bool sync)1946{1947 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);1948 1949 IWL_ERR(priv, "Loaded firmware version: %s\n",1950 priv->fw->fw_version);1951 1952 iwl_dump_nic_error_log(priv);1953 iwl_dump_nic_event_log(priv, false, NULL);1954 1955 iwlagn_fw_error(priv, false);1956}1957 1958static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)1959{1960 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);1961 1962 if (!iwl_check_for_ct_kill(priv)) {1963 IWL_ERR(priv, "Restarting adapter queue is full\n");1964 iwlagn_fw_error(priv, false);1965 }1966}1967 1968#define EEPROM_RF_CONFIG_TYPE_MAX 0x31969 1970static void iwl_nic_config(struct iwl_op_mode *op_mode)1971{1972 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);1973 1974 /* SKU Control */1975 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,1976 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP_DASH,1977 CSR_HW_REV_STEP_DASH(priv->trans->hw_rev));1978 1979 /* write radio config values to register */1980 if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {1981 u32 reg_val =1982 priv->nvm_data->radio_cfg_type <<1983 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |1984 priv->nvm_data->radio_cfg_step <<1985 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |1986 priv->nvm_data->radio_cfg_dash <<1987 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;1988 1989 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,1990 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |1991 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |1992 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,1993 reg_val);1994 1995 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",1996 priv->nvm_data->radio_cfg_type,1997 priv->nvm_data->radio_cfg_step,1998 priv->nvm_data->radio_cfg_dash);1999 } else {2000 WARN_ON(1);2001 }2002 2003 /* set CSR_HW_CONFIG_REG for uCode use */2004 iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,2005 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |2006 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);2007 2008 /* W/A : NIC is stuck in a reset state after Early PCIe power off2009 * (PCIe power is lost before PERST# is asserted),2010 * causing ME FW to lose ownership and not being able to obtain it back.2011 */2012 iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,2013 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,2014 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);2015 2016 if (priv->lib->nic_config)2017 priv->lib->nic_config(priv);2018}2019 2020static void iwl_wimax_active(struct iwl_op_mode *op_mode)2021{2022 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);2023 2024 clear_bit(STATUS_READY, &priv->status);2025 IWL_ERR(priv, "RF is used by WiMAX\n");2026}2027 2028static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)2029{2030 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);2031 int mq = priv->queue_to_mac80211[queue];2032 2033 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))2034 return;2035 2036 if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {2037 IWL_DEBUG_TX_QUEUES(priv,2038 "queue %d (mac80211 %d) already stopped\n",2039 queue, mq);2040 return;2041 }2042 2043 set_bit(mq, &priv->transport_queue_stop);2044 ieee80211_stop_queue(priv->hw, mq);2045}2046 2047static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)2048{2049 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);2050 int mq = priv->queue_to_mac80211[queue];2051 2052 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))2053 return;2054 2055 if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {2056 IWL_DEBUG_TX_QUEUES(priv,2057 "queue %d (mac80211 %d) already awake\n",2058 queue, mq);2059 return;2060 }2061 2062 clear_bit(mq, &priv->transport_queue_stop);2063 2064 if (!priv->passive_no_rx)2065 ieee80211_wake_queue(priv->hw, mq);2066}2067 2068void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)2069{2070 int mq;2071 2072 if (!priv->passive_no_rx)2073 return;2074 2075 for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {2076 if (!test_bit(mq, &priv->transport_queue_stop)) {2077 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);2078 ieee80211_wake_queue(priv->hw, mq);2079 } else {2080 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);2081 }2082 }2083 2084 priv->passive_no_rx = false;2085}2086 2087static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)2088{2089 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);2090 struct ieee80211_tx_info *info;2091 2092 info = IEEE80211_SKB_CB(skb);2093 iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);2094 ieee80211_free_txskb(priv->hw, skb);2095}2096 2097static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)2098{2099 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);2100 2101 if (state)2102 set_bit(STATUS_RF_KILL_HW, &priv->status);2103 else2104 clear_bit(STATUS_RF_KILL_HW, &priv->status);2105 2106 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);2107 2108 return false;2109}2110 2111static const struct iwl_op_mode_ops iwl_dvm_ops = {2112 .start = iwl_op_mode_dvm_start,2113 .stop = iwl_op_mode_dvm_stop,2114 .rx = iwl_rx_dispatch,2115 .queue_full = iwl_stop_sw_queue,2116 .queue_not_full = iwl_wake_sw_queue,2117 .hw_rf_kill = iwl_set_hw_rfkill_state,2118 .free_skb = iwl_free_skb,2119 .nic_error = iwl_nic_error,2120 .cmd_queue_full = iwl_cmd_queue_full,2121 .nic_config = iwl_nic_config,2122 .wimax_active = iwl_wimax_active,2123};2124 2125/*****************************************************************************2126 *2127 * driver and module entry point2128 *2129 *****************************************************************************/2130static int __init iwl_init(void)2131{2132 2133 int ret;2134 2135 ret = iwlagn_rate_control_register();2136 if (ret) {2137 pr_err("Unable to register rate control algorithm: %d\n", ret);2138 return ret;2139 }2140 2141 ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);2142 if (ret) {2143 pr_err("Unable to register op_mode: %d\n", ret);2144 iwlagn_rate_control_unregister();2145 }2146 2147 return ret;2148}2149module_init(iwl_init);2150 2151static void __exit iwl_exit(void)2152{2153 iwl_opmode_deregister("iwldvm");2154 iwlagn_rate_control_unregister();2155}2156module_exit(iwl_exit);2157