1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <linuxwifi@intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 36 * Copyright(c) 2016 Intel Deutschland GmbH 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 43 * * Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * * Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in 47 * the documentation and/or other materials provided with the 48 * distribution. 49 * * Neither the name Intel Corporation nor the names of its 50 * contributors may be used to endorse or promote products derived 51 * from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 * 65 *****************************************************************************/ 66 #include <linux/module.h> 67 #include <linux/vmalloc.h> 68 #include <net/mac80211.h> 69 70 #include "iwl-notif-wait.h" 71 #include "iwl-trans.h" 72 #include "iwl-op-mode.h" 73 #include "iwl-fw.h" 74 #include "iwl-debug.h" 75 #include "iwl-drv.h" 76 #include "iwl-modparams.h" 77 #include "mvm.h" 78 #include "iwl-phy-db.h" 79 #include "iwl-eeprom-parse.h" 80 #include "iwl-csr.h" 81 #include "iwl-io.h" 82 #include "iwl-prph.h" 83 #include "rs.h" 84 #include "fw-api-scan.h" 85 #include "time-event.h" 86 #include "fw-dbg.h" 87 #include "fw-api.h" 88 #include "fw-api-scan.h" 89 90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 91 MODULE_DESCRIPTION(DRV_DESCRIPTION); 92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 93 MODULE_LICENSE("GPL"); 94 95 static const struct iwl_op_mode_ops iwl_mvm_ops; 96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 97 98 struct iwl_mvm_mod_params iwlmvm_mod_params = { 99 .power_scheme = IWL_POWER_SCHEME_BPS, 100 .tfd_q_hang_detect = true 101 /* rest of fields are 0 by default */ 102 }; 103 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); 105 MODULE_PARM_DESC(init_dbg, 106 "set to true to debug an ASSERT in INIT fw (default: false"); 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); 108 MODULE_PARM_DESC(power_scheme, 109 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 111 bool, S_IRUGO); 112 MODULE_PARM_DESC(tfd_q_hang_detect, 113 "TFD queues hang detection (default: true"); 114 115 /* 116 * module init and exit functions 117 */ 118 static int __init iwl_mvm_init(void) 119 { 120 int ret; 121 122 ret = iwl_mvm_rate_control_register(); 123 if (ret) { 124 pr_err("Unable to register rate control algorithm: %d\n", ret); 125 return ret; 126 } 127 128 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 129 130 if (ret) { 131 pr_err("Unable to register MVM op_mode: %d\n", ret); 132 iwl_mvm_rate_control_unregister(); 133 } 134 135 return ret; 136 } 137 module_init(iwl_mvm_init); 138 139 static void __exit iwl_mvm_exit(void) 140 { 141 iwl_opmode_deregister("iwlmvm"); 142 iwl_mvm_rate_control_unregister(); 143 } 144 module_exit(iwl_mvm_exit); 145 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 147 { 148 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 149 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 150 u32 reg_val = 0; 151 u32 phy_config = iwl_mvm_get_phy_config(mvm); 152 153 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 154 FW_PHY_CFG_RADIO_TYPE_POS; 155 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 156 FW_PHY_CFG_RADIO_STEP_POS; 157 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 158 FW_PHY_CFG_RADIO_DASH_POS; 159 160 /* SKU control */ 161 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 162 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 163 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 164 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 165 166 /* radio configuration */ 167 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 168 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 169 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 170 171 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 172 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 173 174 /* 175 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and 176 * shouldn't be set to any non-zero value. The same is supposed to be 177 * true of the other HW, but unsetting them (such as the 7260) causes 178 * automatic tests to fail on seemingly unrelated errors. Need to 179 * further investigate this, but for now we'll separate cases. 180 */ 181 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 182 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 183 184 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 185 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 186 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 187 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 188 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 189 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 190 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 191 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, 192 reg_val); 193 194 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 195 radio_cfg_step, radio_cfg_dash); 196 197 /* 198 * W/A : NIC is stuck in a reset state after Early PCIe power off 199 * (PCIe power is lost before PERST# is asserted), causing ME FW 200 * to lose ownership and not being able to obtain it back. 201 */ 202 if (!mvm->trans->cfg->apmg_not_supported) 203 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 204 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 205 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 206 } 207 208 /** 209 * enum iwl_rx_handler_context context for Rx handler 210 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 211 * which can't acquire mvm->mutex. 212 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 213 * (and only in this case!), it should be set as ASYNC. In that case, 214 * it will be called from a worker with mvm->mutex held. 215 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 216 * mutex itself, it will be called from a worker without mvm->mutex held. 217 */ 218 enum iwl_rx_handler_context { 219 RX_HANDLER_SYNC, 220 RX_HANDLER_ASYNC_LOCKED, 221 RX_HANDLER_ASYNC_UNLOCKED, 222 }; 223 224 /** 225 * struct iwl_rx_handlers handler for FW notification 226 * @cmd_id: command id 227 * @context: see &iwl_rx_handler_context 228 * @fn: the function is called when notification is received 229 */ 230 struct iwl_rx_handlers { 231 u16 cmd_id; 232 enum iwl_rx_handler_context context; 233 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 234 }; 235 236 #define RX_HANDLER(_cmd_id, _fn, _context) \ 237 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 239 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 240 241 /* 242 * Handlers for fw notifications 243 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 244 * This list should be in order of frequency for performance purposes. 245 * 246 * The handler can be one from three contexts, see &iwl_rx_handler_context 247 */ 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 249 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 250 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 251 252 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 253 RX_HANDLER_ASYNC_LOCKED), 254 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 255 RX_HANDLER_ASYNC_LOCKED), 256 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 257 RX_HANDLER_ASYNC_LOCKED), 258 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, 259 iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED), 260 261 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 262 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 263 264 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 265 RX_HANDLER_SYNC), 266 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 267 RX_HANDLER_ASYNC_LOCKED), 268 269 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 270 271 RX_HANDLER(SCAN_ITERATION_COMPLETE, 272 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 273 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 274 iwl_mvm_rx_lmac_scan_complete_notif, 275 RX_HANDLER_ASYNC_LOCKED), 276 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 277 RX_HANDLER_SYNC), 278 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 279 RX_HANDLER_ASYNC_LOCKED), 280 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 281 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 282 283 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 284 RX_HANDLER_SYNC), 285 286 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 287 RX_HANDLER_SYNC), 288 289 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 290 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 291 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 292 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 293 RX_HANDLER_ASYNC_LOCKED), 294 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 295 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 296 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 297 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 298 299 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 300 RX_HANDLER_ASYNC_LOCKED), 301 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 302 RX_HANDLER_SYNC), 303 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, 304 RX_HANDLER_ASYNC_LOCKED), 305 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 306 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 307 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 308 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 309 }; 310 #undef RX_HANDLER 311 #undef RX_HANDLER_GRP 312 313 /* Please keep this array *SORTED* by hex value. 314 * Access is done through binary search 315 */ 316 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 317 HCMD_NAME(MVM_ALIVE), 318 HCMD_NAME(REPLY_ERROR), 319 HCMD_NAME(ECHO_CMD), 320 HCMD_NAME(INIT_COMPLETE_NOTIF), 321 HCMD_NAME(PHY_CONTEXT_CMD), 322 HCMD_NAME(DBG_CFG), 323 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION), 324 HCMD_NAME(SCAN_CFG_CMD), 325 HCMD_NAME(SCAN_REQ_UMAC), 326 HCMD_NAME(SCAN_ABORT_UMAC), 327 HCMD_NAME(SCAN_COMPLETE_UMAC), 328 HCMD_NAME(TOF_CMD), 329 HCMD_NAME(TOF_NOTIFICATION), 330 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 331 HCMD_NAME(ADD_STA_KEY), 332 HCMD_NAME(ADD_STA), 333 HCMD_NAME(REMOVE_STA), 334 HCMD_NAME(FW_GET_ITEM_CMD), 335 HCMD_NAME(TX_CMD), 336 HCMD_NAME(SCD_QUEUE_CFG), 337 HCMD_NAME(TXPATH_FLUSH), 338 HCMD_NAME(MGMT_MCAST_KEY), 339 HCMD_NAME(WEP_KEY), 340 HCMD_NAME(SHARED_MEM_CFG), 341 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 342 HCMD_NAME(MAC_CONTEXT_CMD), 343 HCMD_NAME(TIME_EVENT_CMD), 344 HCMD_NAME(TIME_EVENT_NOTIFICATION), 345 HCMD_NAME(BINDING_CONTEXT_CMD), 346 HCMD_NAME(TIME_QUOTA_CMD), 347 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 348 HCMD_NAME(LQ_CMD), 349 HCMD_NAME(FW_PAGING_BLOCK_CMD), 350 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 351 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 352 HCMD_NAME(HOT_SPOT_CMD), 353 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 354 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD), 355 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD), 356 HCMD_NAME(BT_COEX_UPDATE_SW_BOOST), 357 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT), 358 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 359 HCMD_NAME(BT_COEX_CI), 360 HCMD_NAME(PHY_CONFIGURATION_CMD), 361 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 362 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 363 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 364 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD), 365 HCMD_NAME(POWER_TABLE_CMD), 366 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 367 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 368 HCMD_NAME(DC2DC_CONFIG_CMD), 369 HCMD_NAME(NVM_ACCESS_CMD), 370 HCMD_NAME(SET_CALIB_DEFAULT_CMD), 371 HCMD_NAME(BEACON_NOTIFICATION), 372 HCMD_NAME(BEACON_TEMPLATE_CMD), 373 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 374 HCMD_NAME(BT_CONFIG), 375 HCMD_NAME(STATISTICS_CMD), 376 HCMD_NAME(STATISTICS_NOTIFICATION), 377 HCMD_NAME(EOSP_NOTIFICATION), 378 HCMD_NAME(REDUCE_TX_POWER_CMD), 379 HCMD_NAME(CARD_STATE_CMD), 380 HCMD_NAME(CARD_STATE_NOTIFICATION), 381 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 382 HCMD_NAME(TDLS_CONFIG_CMD), 383 HCMD_NAME(MAC_PM_POWER_TABLE), 384 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 385 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 386 HCMD_NAME(RSS_CONFIG_CMD), 387 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 388 HCMD_NAME(REPLY_RX_PHY_CMD), 389 HCMD_NAME(REPLY_RX_MPDU_CMD), 390 HCMD_NAME(BA_NOTIF), 391 HCMD_NAME(MCC_UPDATE_CMD), 392 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 393 HCMD_NAME(MARKER_CMD), 394 HCMD_NAME(BT_COEX_PRIO_TABLE), 395 HCMD_NAME(BT_COEX_PROT_ENV), 396 HCMD_NAME(BT_PROFILE_NOTIFICATION), 397 HCMD_NAME(BCAST_FILTER_CMD), 398 HCMD_NAME(MCAST_FILTER_CMD), 399 HCMD_NAME(REPLY_SF_CFG_CMD), 400 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 401 HCMD_NAME(D3_CONFIG_CMD), 402 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 403 HCMD_NAME(OFFLOADS_QUERY_CMD), 404 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 405 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 406 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER), 407 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 408 HCMD_NAME(WOWLAN_PATTERNS), 409 HCMD_NAME(WOWLAN_CONFIGURATION), 410 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 411 HCMD_NAME(WOWLAN_TKIP_PARAM), 412 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 413 HCMD_NAME(WOWLAN_GET_STATUSES), 414 HCMD_NAME(WOWLAN_TX_POWER_PER_DB), 415 HCMD_NAME(SCAN_ITERATION_COMPLETE), 416 HCMD_NAME(D0I3_END_CMD), 417 HCMD_NAME(LTR_CONFIG), 418 HCMD_NAME(REPLY_DEBUG_CMD), 419 }; 420 421 /* Please keep this array *SORTED* by hex value. 422 * Access is done through binary search 423 */ 424 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 425 HCMD_NAME(SHARED_MEM_CFG_CMD), 426 }; 427 428 /* Please keep this array *SORTED* by hex value. 429 * Access is done through binary search 430 */ 431 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 432 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD), 433 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF), 434 }; 435 436 /* Please keep this array *SORTED* by hex value. 437 * Access is done through binary search 438 */ 439 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 440 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 441 HCMD_NAME(CTDP_CONFIG_CMD), 442 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 443 HCMD_NAME(CT_KILL_NOTIFICATION), 444 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 445 }; 446 447 /* Please keep this array *SORTED* by hex value. 448 * Access is done through binary search 449 */ 450 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 451 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 452 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 453 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 454 HCMD_NAME(RX_QUEUES_NOTIFICATION), 455 }; 456 457 /* Please keep this array *SORTED* by hex value. 458 * Access is done through binary search 459 */ 460 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 461 HCMD_NAME(STORED_BEACON_NTF), 462 }; 463 464 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 465 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 466 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 467 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 468 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 469 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 470 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 471 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 472 }; 473 474 /* this forward declaration can avoid to export the function */ 475 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 476 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 477 478 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 479 { 480 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 481 482 if (!pwr_tx_backoff) 483 return 0; 484 485 while (pwr_tx_backoff->pwr) { 486 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 487 return pwr_tx_backoff->backoff; 488 489 pwr_tx_backoff++; 490 } 491 492 return 0; 493 } 494 495 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 496 497 static struct iwl_op_mode * 498 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 499 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 500 { 501 struct ieee80211_hw *hw; 502 struct iwl_op_mode *op_mode; 503 struct iwl_mvm *mvm; 504 struct iwl_trans_config trans_cfg = {}; 505 static const u8 no_reclaim_cmds[] = { 506 TX_CMD, 507 }; 508 int err, scan_size; 509 u32 min_backoff; 510 511 /* 512 * We use IWL_MVM_STATION_COUNT to check the validity of the station 513 * index all over the driver - check that its value corresponds to the 514 * array size. 515 */ 516 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 517 518 /******************************** 519 * 1. Allocating and configuring HW data 520 ********************************/ 521 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 522 sizeof(struct iwl_mvm), 523 &iwl_mvm_hw_ops); 524 if (!hw) 525 return NULL; 526 527 if (cfg->max_rx_agg_size) 528 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 529 530 if (cfg->max_tx_agg_size) 531 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 532 533 op_mode = hw->priv; 534 535 mvm = IWL_OP_MODE_GET_MVM(op_mode); 536 mvm->dev = trans->dev; 537 mvm->trans = trans; 538 mvm->cfg = cfg; 539 mvm->fw = fw; 540 mvm->hw = hw; 541 542 if (iwl_mvm_has_new_rx_api(mvm)) { 543 op_mode->ops = &iwl_mvm_ops_mq; 544 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 545 } else { 546 op_mode->ops = &iwl_mvm_ops; 547 trans->rx_mpdu_cmd_hdr_size = 548 sizeof(struct iwl_rx_mpdu_res_start); 549 550 if (WARN_ON(trans->num_rx_queues > 1)) 551 goto out_free; 552 } 553 554 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 555 556 mvm->aux_queue = 15; 557 if (!iwl_mvm_is_dqa_supported(mvm)) { 558 mvm->first_agg_queue = 16; 559 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 560 } else { 561 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE; 562 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; 563 } 564 if (mvm->cfg->base_params->num_of_queues == 16) { 565 mvm->aux_queue = 11; 566 mvm->first_agg_queue = 12; 567 } 568 mvm->sf_state = SF_UNINIT; 569 mvm->cur_ucode = IWL_UCODE_INIT; 570 mvm->drop_bcn_ap_mode = true; 571 572 mutex_init(&mvm->mutex); 573 mutex_init(&mvm->d0i3_suspend_mutex); 574 spin_lock_init(&mvm->async_handlers_lock); 575 INIT_LIST_HEAD(&mvm->time_event_list); 576 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 577 INIT_LIST_HEAD(&mvm->async_handlers_list); 578 spin_lock_init(&mvm->time_event_lock); 579 spin_lock_init(&mvm->queue_info_lock); 580 581 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 582 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 583 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 584 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 585 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 586 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 587 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 588 589 spin_lock_init(&mvm->d0i3_tx_lock); 590 spin_lock_init(&mvm->refs_lock); 591 skb_queue_head_init(&mvm->d0i3_tx); 592 init_waitqueue_head(&mvm->d0i3_exit_waitq); 593 594 atomic_set(&mvm->queue_sync_counter, 0); 595 596 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 597 598 /* 599 * Populate the state variables that the transport layer needs 600 * to know about. 601 */ 602 trans_cfg.op_mode = op_mode; 603 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 604 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 605 switch (iwlwifi_mod_params.amsdu_size) { 606 case IWL_AMSDU_4K: 607 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 608 break; 609 case IWL_AMSDU_8K: 610 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 611 break; 612 case IWL_AMSDU_12K: 613 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 614 break; 615 default: 616 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 617 iwlwifi_mod_params.amsdu_size); 618 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 619 } 620 trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa, 621 IWL_UCODE_TLV_API_WIDE_CMD_HDR); 622 623 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) 624 trans_cfg.bc_table_dword = true; 625 626 trans_cfg.command_groups = iwl_mvm_groups; 627 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 628 629 if (iwl_mvm_is_dqa_supported(mvm)) 630 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 631 else 632 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 633 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 634 trans_cfg.scd_set_active = true; 635 636 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 637 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 638 639 /* Set a short watchdog for the command queue */ 640 trans_cfg.cmd_q_wdg_timeout = 641 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 642 643 snprintf(mvm->hw->wiphy->fw_version, 644 sizeof(mvm->hw->wiphy->fw_version), 645 "%s", fw->fw_version); 646 647 /* Configure transport layer */ 648 iwl_trans_configure(mvm->trans, &trans_cfg); 649 650 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 651 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 652 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 653 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 654 sizeof(trans->dbg_conf_tlv)); 655 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 656 657 /* set up notification wait support */ 658 iwl_notification_wait_init(&mvm->notif_wait); 659 660 /* Init phy db */ 661 mvm->phy_db = iwl_phy_db_init(trans); 662 if (!mvm->phy_db) { 663 IWL_ERR(mvm, "Cannot init phy_db\n"); 664 goto out_free; 665 } 666 667 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 668 mvm->cfg->name, mvm->trans->hw_rev); 669 670 if (iwlwifi_mod_params.nvm_file) 671 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 672 else 673 IWL_DEBUG_EEPROM(mvm->trans->dev, 674 "working without external nvm file\n"); 675 676 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, 677 "not allowing power-up and not having nvm_file\n")) 678 goto out_free; 679 680 /* 681 * Even if nvm exists in the nvm_file driver should read again the nvm 682 * from the nic because there might be entries that exist in the OTP 683 * and not in the file. 684 * for nics with no_power_up_nic_in_init: rely completley on nvm_file 685 */ 686 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { 687 err = iwl_nvm_init(mvm, false); 688 if (err) 689 goto out_free; 690 } else { 691 err = iwl_trans_start_hw(mvm->trans); 692 if (err) 693 goto out_free; 694 695 mutex_lock(&mvm->mutex); 696 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 697 err = iwl_run_init_mvm_ucode(mvm, true); 698 if (!err || !iwlmvm_mod_params.init_dbg) 699 iwl_mvm_stop_device(mvm); 700 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 701 mutex_unlock(&mvm->mutex); 702 /* returns 0 if successful, 1 if success but in rfkill */ 703 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 704 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 705 goto out_free; 706 } 707 } 708 709 scan_size = iwl_mvm_scan_size(mvm); 710 711 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 712 if (!mvm->scan_cmd) 713 goto out_free; 714 715 /* Set EBS as successful as long as not stated otherwise by the FW. */ 716 mvm->last_ebs_successful = true; 717 718 err = iwl_mvm_mac_setup_register(mvm); 719 if (err) 720 goto out_free; 721 722 min_backoff = calc_min_backoff(trans, cfg); 723 iwl_mvm_thermal_initialize(mvm, min_backoff); 724 725 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 726 if (err) 727 goto out_unregister; 728 729 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 730 731 /* The transport always starts with a taken reference, we can 732 * release it now if d0i3 is supported */ 733 if (iwl_mvm_is_d0i3_supported(mvm)) 734 iwl_trans_unref(mvm->trans); 735 736 iwl_mvm_tof_init(mvm); 737 738 setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout, 739 (unsigned long)mvm); 740 741 return op_mode; 742 743 out_unregister: 744 ieee80211_unregister_hw(mvm->hw); 745 iwl_mvm_leds_exit(mvm); 746 iwl_mvm_thermal_exit(mvm); 747 out_free: 748 flush_delayed_work(&mvm->fw_dump_wk); 749 iwl_phy_db_free(mvm->phy_db); 750 kfree(mvm->scan_cmd); 751 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) 752 iwl_trans_op_mode_leave(trans); 753 ieee80211_free_hw(mvm->hw); 754 return NULL; 755 } 756 757 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 758 { 759 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 760 int i; 761 762 /* If d0i3 is supported, we have released the reference that 763 * the transport started with, so we should take it back now 764 * that we are leaving. 765 */ 766 if (iwl_mvm_is_d0i3_supported(mvm)) 767 iwl_trans_ref(mvm->trans); 768 769 iwl_mvm_leds_exit(mvm); 770 771 iwl_mvm_thermal_exit(mvm); 772 773 ieee80211_unregister_hw(mvm->hw); 774 775 kfree(mvm->scan_cmd); 776 kfree(mvm->mcast_filter_cmd); 777 mvm->mcast_filter_cmd = NULL; 778 779 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 780 kfree(mvm->d3_resume_sram); 781 #endif 782 783 iwl_trans_op_mode_leave(mvm->trans); 784 785 iwl_phy_db_free(mvm->phy_db); 786 mvm->phy_db = NULL; 787 788 iwl_free_nvm_data(mvm->nvm_data); 789 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 790 kfree(mvm->nvm_sections[i].data); 791 792 iwl_mvm_tof_clean(mvm); 793 794 del_timer_sync(&mvm->scan_timer); 795 796 mutex_destroy(&mvm->mutex); 797 mutex_destroy(&mvm->d0i3_suspend_mutex); 798 799 ieee80211_free_hw(mvm->hw); 800 } 801 802 struct iwl_async_handler_entry { 803 struct list_head list; 804 struct iwl_rx_cmd_buffer rxb; 805 enum iwl_rx_handler_context context; 806 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 807 }; 808 809 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 810 { 811 struct iwl_async_handler_entry *entry, *tmp; 812 813 spin_lock_bh(&mvm->async_handlers_lock); 814 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 815 iwl_free_rxb(&entry->rxb); 816 list_del(&entry->list); 817 kfree(entry); 818 } 819 spin_unlock_bh(&mvm->async_handlers_lock); 820 } 821 822 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 823 { 824 struct iwl_mvm *mvm = 825 container_of(wk, struct iwl_mvm, async_handlers_wk); 826 struct iwl_async_handler_entry *entry, *tmp; 827 struct list_head local_list; 828 829 INIT_LIST_HEAD(&local_list); 830 831 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 832 833 /* 834 * Sync with Rx path with a lock. Remove all the entries from this list, 835 * add them to a local one (lock free), and then handle them. 836 */ 837 spin_lock_bh(&mvm->async_handlers_lock); 838 list_splice_init(&mvm->async_handlers_list, &local_list); 839 spin_unlock_bh(&mvm->async_handlers_lock); 840 841 list_for_each_entry_safe(entry, tmp, &local_list, list) { 842 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 843 mutex_lock(&mvm->mutex); 844 entry->fn(mvm, &entry->rxb); 845 iwl_free_rxb(&entry->rxb); 846 list_del(&entry->list); 847 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 848 mutex_unlock(&mvm->mutex); 849 kfree(entry); 850 } 851 } 852 853 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 854 struct iwl_rx_packet *pkt) 855 { 856 struct iwl_fw_dbg_trigger_tlv *trig; 857 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 858 int i; 859 860 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 861 return; 862 863 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 864 cmds_trig = (void *)trig->data; 865 866 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 867 return; 868 869 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 870 /* don't collect on CMD 0 */ 871 if (!cmds_trig->cmds[i].cmd_id) 872 break; 873 874 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 875 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 876 continue; 877 878 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 879 "CMD 0x%02x.%02x received", 880 pkt->hdr.group_id, pkt->hdr.cmd); 881 break; 882 } 883 } 884 885 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 886 struct iwl_rx_cmd_buffer *rxb, 887 struct iwl_rx_packet *pkt) 888 { 889 int i; 890 891 iwl_mvm_rx_check_trigger(mvm, pkt); 892 893 /* 894 * Do the notification wait before RX handlers so 895 * even if the RX handler consumes the RXB we have 896 * access to it in the notification wait entry. 897 */ 898 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 899 900 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 901 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 902 struct iwl_async_handler_entry *entry; 903 904 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 905 continue; 906 907 if (rx_h->context == RX_HANDLER_SYNC) { 908 rx_h->fn(mvm, rxb); 909 return; 910 } 911 912 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 913 /* we can't do much... */ 914 if (!entry) 915 return; 916 917 entry->rxb._page = rxb_steal_page(rxb); 918 entry->rxb._offset = rxb->_offset; 919 entry->rxb._rx_page_order = rxb->_rx_page_order; 920 entry->fn = rx_h->fn; 921 entry->context = rx_h->context; 922 spin_lock(&mvm->async_handlers_lock); 923 list_add_tail(&entry->list, &mvm->async_handlers_list); 924 spin_unlock(&mvm->async_handlers_lock); 925 schedule_work(&mvm->async_handlers_wk); 926 break; 927 } 928 } 929 930 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 931 struct napi_struct *napi, 932 struct iwl_rx_cmd_buffer *rxb) 933 { 934 struct iwl_rx_packet *pkt = rxb_addr(rxb); 935 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 936 937 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) 938 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 939 else if (pkt->hdr.cmd == FRAME_RELEASE) 940 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 941 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD) 942 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 943 else 944 iwl_mvm_rx_common(mvm, rxb, pkt); 945 } 946 947 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 948 struct napi_struct *napi, 949 struct iwl_rx_cmd_buffer *rxb) 950 { 951 struct iwl_rx_packet *pkt = rxb_addr(rxb); 952 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 953 954 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) 955 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 956 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD) 957 iwl_mvm_rx_phy_cmd_mq(mvm, rxb); 958 else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP && 959 pkt->hdr.cmd == RX_QUEUES_NOTIFICATION)) 960 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 961 else 962 iwl_mvm_rx_common(mvm, rxb, pkt); 963 } 964 965 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 966 { 967 int q; 968 969 if (WARN_ON_ONCE(!mq)) 970 return; 971 972 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 973 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 974 IWL_DEBUG_TX_QUEUES(mvm, 975 "mac80211 %d already stopped\n", q); 976 continue; 977 } 978 979 ieee80211_stop_queue(mvm->hw, q); 980 } 981 } 982 983 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 984 const struct iwl_device_cmd *cmd) 985 { 986 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 987 988 /* 989 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 990 * commands that need to block the Tx queues. 991 */ 992 iwl_trans_block_txq_ptrs(mvm->trans, false); 993 } 994 995 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 996 { 997 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 998 unsigned long mq; 999 1000 spin_lock_bh(&mvm->queue_info_lock); 1001 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1002 spin_unlock_bh(&mvm->queue_info_lock); 1003 1004 iwl_mvm_stop_mac_queues(mvm, mq); 1005 } 1006 1007 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1008 { 1009 int q; 1010 1011 if (WARN_ON_ONCE(!mq)) 1012 return; 1013 1014 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1015 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1016 IWL_DEBUG_TX_QUEUES(mvm, 1017 "mac80211 %d still stopped\n", q); 1018 continue; 1019 } 1020 1021 ieee80211_wake_queue(mvm->hw, q); 1022 } 1023 } 1024 1025 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1026 { 1027 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1028 unsigned long mq; 1029 1030 spin_lock_bh(&mvm->queue_info_lock); 1031 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1032 spin_unlock_bh(&mvm->queue_info_lock); 1033 1034 iwl_mvm_start_mac_queues(mvm, mq); 1035 } 1036 1037 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1038 { 1039 if (state) 1040 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1041 else 1042 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1043 1044 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1045 } 1046 1047 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1048 { 1049 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1050 bool calibrating = ACCESS_ONCE(mvm->calibrating); 1051 1052 if (state) 1053 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1054 else 1055 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1056 1057 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1058 1059 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1060 if (calibrating) 1061 iwl_abort_notification_waits(&mvm->notif_wait); 1062 1063 /* 1064 * Stop the device if we run OPERATIONAL firmware or if we are in the 1065 * middle of the calibrations. 1066 */ 1067 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 1068 } 1069 1070 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1071 { 1072 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1073 struct ieee80211_tx_info *info; 1074 1075 info = IEEE80211_SKB_CB(skb); 1076 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1077 ieee80211_free_txskb(mvm->hw, skb); 1078 } 1079 1080 struct iwl_mvm_reprobe { 1081 struct device *dev; 1082 struct work_struct work; 1083 }; 1084 1085 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1086 { 1087 struct iwl_mvm_reprobe *reprobe; 1088 1089 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1090 if (device_reprobe(reprobe->dev)) 1091 dev_err(reprobe->dev, "reprobe failed!\n"); 1092 kfree(reprobe); 1093 module_put(THIS_MODULE); 1094 } 1095 1096 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 1097 { 1098 struct iwl_mvm *mvm = 1099 container_of(work, struct iwl_mvm, fw_dump_wk.work); 1100 1101 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 1102 return; 1103 1104 mutex_lock(&mvm->mutex); 1105 1106 /* stop recording */ 1107 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 1108 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 1109 } else { 1110 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 1111 /* wait before we collect the data till the DBGC stop */ 1112 udelay(100); 1113 } 1114 1115 iwl_mvm_fw_error_dump(mvm); 1116 1117 /* start recording again if the firmware is not crashed */ 1118 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) && 1119 mvm->fw->dbg_dest_tlv && 1120 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf)); 1121 1122 mutex_unlock(&mvm->mutex); 1123 1124 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 1125 } 1126 1127 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1128 { 1129 iwl_abort_notification_waits(&mvm->notif_wait); 1130 1131 /* 1132 * This is a bit racy, but worst case we tell mac80211 about 1133 * a stopped/aborted scan when that was already done which 1134 * is not a problem. It is necessary to abort any os scan 1135 * here because mac80211 requires having the scan cleared 1136 * before restarting. 1137 * We'll reset the scan_status to NONE in restart cleanup in 1138 * the next start() call from mac80211. If restart isn't called 1139 * (no fw restart) scan status will stay busy. 1140 */ 1141 iwl_mvm_report_scan_aborted(mvm); 1142 1143 /* 1144 * If we're restarting already, don't cycle restarts. 1145 * If INIT fw asserted, it will likely fail again. 1146 * If WoWLAN fw asserted, don't restart either, mac80211 1147 * can't recover this since we're already half suspended. 1148 */ 1149 if (!mvm->restart_fw && fw_error) { 1150 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 1151 NULL); 1152 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1153 &mvm->status)) { 1154 struct iwl_mvm_reprobe *reprobe; 1155 1156 IWL_ERR(mvm, 1157 "Firmware error during reconfiguration - reprobe!\n"); 1158 1159 /* 1160 * get a module reference to avoid doing this while unloading 1161 * anyway and to avoid scheduling a work with code that's 1162 * being removed. 1163 */ 1164 if (!try_module_get(THIS_MODULE)) { 1165 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1166 return; 1167 } 1168 1169 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1170 if (!reprobe) { 1171 module_put(THIS_MODULE); 1172 return; 1173 } 1174 reprobe->dev = mvm->trans->dev; 1175 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1176 schedule_work(&reprobe->work); 1177 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) { 1178 /* don't let the transport/FW power down */ 1179 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1180 1181 if (fw_error && mvm->restart_fw > 0) 1182 mvm->restart_fw--; 1183 ieee80211_restart_hw(mvm->hw); 1184 } 1185 } 1186 1187 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1188 { 1189 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1190 1191 iwl_mvm_dump_nic_error_log(mvm); 1192 1193 iwl_mvm_nic_restart(mvm, true); 1194 } 1195 1196 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1197 { 1198 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1199 1200 WARN_ON(1); 1201 iwl_mvm_nic_restart(mvm, true); 1202 } 1203 1204 struct iwl_d0i3_iter_data { 1205 struct iwl_mvm *mvm; 1206 struct ieee80211_vif *connected_vif; 1207 u8 ap_sta_id; 1208 u8 vif_count; 1209 u8 offloading_tid; 1210 bool disable_offloading; 1211 }; 1212 1213 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1214 struct ieee80211_vif *vif, 1215 struct iwl_d0i3_iter_data *iter_data) 1216 { 1217 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1218 struct iwl_mvm_sta *mvmsta; 1219 u32 available_tids = 0; 1220 u8 tid; 1221 1222 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1223 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) 1224 return false; 1225 1226 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1227 if (!mvmsta) 1228 return false; 1229 1230 spin_lock_bh(&mvmsta->lock); 1231 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1232 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1233 1234 /* 1235 * in case of pending tx packets, don't use this tid 1236 * for offloading in order to prevent reuse of the same 1237 * qos seq counters. 1238 */ 1239 if (iwl_mvm_tid_queued(tid_data)) 1240 continue; 1241 1242 if (tid_data->state != IWL_AGG_OFF) 1243 continue; 1244 1245 available_tids |= BIT(tid); 1246 } 1247 spin_unlock_bh(&mvmsta->lock); 1248 1249 /* 1250 * disallow protocol offloading if we have no available tid 1251 * (with no pending frames and no active aggregation, 1252 * as we don't handle "holes" properly - the scheduler needs the 1253 * frame's seq number and TFD index to match) 1254 */ 1255 if (!available_tids) 1256 return true; 1257 1258 /* for simplicity, just use the first available tid */ 1259 iter_data->offloading_tid = ffs(available_tids) - 1; 1260 return false; 1261 } 1262 1263 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1264 struct ieee80211_vif *vif) 1265 { 1266 struct iwl_d0i3_iter_data *data = _data; 1267 struct iwl_mvm *mvm = data->mvm; 1268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1269 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1270 1271 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1272 if (vif->type != NL80211_IFTYPE_STATION || 1273 !vif->bss_conf.assoc) 1274 return; 1275 1276 /* 1277 * in case of pending tx packets or active aggregations, 1278 * avoid offloading features in order to prevent reuse of 1279 * the same qos seq counters. 1280 */ 1281 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1282 data->disable_offloading = true; 1283 1284 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1285 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1286 false, flags); 1287 1288 /* 1289 * on init/association, mvm already configures POWER_TABLE_CMD 1290 * and REPLY_MCAST_FILTER_CMD, so currently don't 1291 * reconfigure them (we might want to use different 1292 * params later on, though). 1293 */ 1294 data->ap_sta_id = mvmvif->ap_sta_id; 1295 data->vif_count++; 1296 1297 /* 1298 * no new commands can be sent at this stage, so it's safe 1299 * to save the vif pointer during d0i3 entrance. 1300 */ 1301 data->connected_vif = vif; 1302 } 1303 1304 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1305 struct iwl_wowlan_config_cmd *cmd, 1306 struct iwl_d0i3_iter_data *iter_data) 1307 { 1308 struct ieee80211_sta *ap_sta; 1309 struct iwl_mvm_sta *mvm_ap_sta; 1310 1311 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) 1312 return; 1313 1314 rcu_read_lock(); 1315 1316 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1317 if (IS_ERR_OR_NULL(ap_sta)) 1318 goto out; 1319 1320 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1321 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1322 cmd->offloading_tid = iter_data->offloading_tid; 1323 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1324 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1325 /* 1326 * The d0i3 uCode takes care of the nonqos counters, 1327 * so configure only the qos seq ones. 1328 */ 1329 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1330 out: 1331 rcu_read_unlock(); 1332 } 1333 1334 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1335 { 1336 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1337 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1338 int ret; 1339 struct iwl_d0i3_iter_data d0i3_iter_data = { 1340 .mvm = mvm, 1341 }; 1342 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1343 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1344 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1345 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1346 }; 1347 struct iwl_d3_manager_config d3_cfg_cmd = { 1348 .min_sleep_time = cpu_to_le32(1000), 1349 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1350 }; 1351 1352 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1353 1354 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1355 return -EINVAL; 1356 1357 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1358 1359 /* 1360 * iwl_mvm_ref_sync takes a reference before checking the flag. 1361 * so by checking there is no held reference we prevent a state 1362 * in which iwl_mvm_ref_sync continues successfully while we 1363 * configure the firmware to enter d0i3 1364 */ 1365 if (iwl_mvm_ref_taken(mvm)) { 1366 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1367 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1368 wake_up(&mvm->d0i3_exit_waitq); 1369 return 1; 1370 } 1371 1372 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1373 IEEE80211_IFACE_ITER_NORMAL, 1374 iwl_mvm_enter_d0i3_iterator, 1375 &d0i3_iter_data); 1376 if (d0i3_iter_data.vif_count == 1) { 1377 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1378 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1379 } else { 1380 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1381 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1382 mvm->d0i3_offloading = false; 1383 } 1384 1385 /* make sure we have no running tx while configuring the seqno */ 1386 synchronize_net(); 1387 1388 /* Flush the hw queues, in case something got queued during entry */ 1389 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags); 1390 if (ret) 1391 return ret; 1392 1393 /* configure wowlan configuration only if needed */ 1394 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) { 1395 /* wake on beacons only if beacon storing isn't supported */ 1396 if (!fw_has_capa(&mvm->fw->ucode_capa, 1397 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1398 wowlan_config_cmd.wakeup_filter |= 1399 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1400 1401 iwl_mvm_wowlan_config_key_params(mvm, 1402 d0i3_iter_data.connected_vif, 1403 true, flags); 1404 1405 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1406 &d0i3_iter_data); 1407 1408 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1409 sizeof(wowlan_config_cmd), 1410 &wowlan_config_cmd); 1411 if (ret) 1412 return ret; 1413 } 1414 1415 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1416 flags | CMD_MAKE_TRANS_IDLE, 1417 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1418 } 1419 1420 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1421 struct ieee80211_vif *vif) 1422 { 1423 struct iwl_mvm *mvm = _data; 1424 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1425 1426 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1427 if (vif->type != NL80211_IFTYPE_STATION || 1428 !vif->bss_conf.assoc) 1429 return; 1430 1431 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1432 } 1433 1434 struct iwl_mvm_d0i3_exit_work_iter_data { 1435 struct iwl_mvm *mvm; 1436 struct iwl_wowlan_status *status; 1437 u32 wakeup_reasons; 1438 }; 1439 1440 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1441 struct ieee80211_vif *vif) 1442 { 1443 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1444 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1445 u32 reasons = data->wakeup_reasons; 1446 1447 /* consider only the relevant station interface */ 1448 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1449 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1450 return; 1451 1452 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1453 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1454 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1455 ieee80211_beacon_loss(vif); 1456 else 1457 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1458 } 1459 1460 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1461 { 1462 struct ieee80211_sta *sta = NULL; 1463 struct iwl_mvm_sta *mvm_ap_sta; 1464 int i; 1465 bool wake_queues = false; 1466 1467 lockdep_assert_held(&mvm->mutex); 1468 1469 spin_lock_bh(&mvm->d0i3_tx_lock); 1470 1471 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) 1472 goto out; 1473 1474 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1475 1476 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1477 sta = rcu_dereference_protected( 1478 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1479 lockdep_is_held(&mvm->mutex)); 1480 1481 if (IS_ERR_OR_NULL(sta)) { 1482 sta = NULL; 1483 goto out; 1484 } 1485 1486 if (mvm->d0i3_offloading && qos_seq) { 1487 /* update qos seq numbers if offloading was enabled */ 1488 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1489 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1490 u16 seq = le16_to_cpu(qos_seq[i]); 1491 /* firmware stores last-used one, we store next one */ 1492 seq += 0x10; 1493 mvm_ap_sta->tid_data[i].seq_number = seq; 1494 } 1495 } 1496 out: 1497 /* re-enqueue (or drop) all packets */ 1498 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1499 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1500 1501 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1502 ieee80211_free_txskb(mvm->hw, skb); 1503 1504 /* if the skb_queue is not empty, we need to wake queues */ 1505 wake_queues = true; 1506 } 1507 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1508 wake_up(&mvm->d0i3_exit_waitq); 1509 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1510 if (wake_queues) 1511 ieee80211_wake_queues(mvm->hw); 1512 1513 spin_unlock_bh(&mvm->d0i3_tx_lock); 1514 } 1515 1516 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1517 { 1518 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1519 struct iwl_host_cmd get_status_cmd = { 1520 .id = WOWLAN_GET_STATUSES, 1521 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1522 }; 1523 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1524 .mvm = mvm, 1525 }; 1526 1527 struct iwl_wowlan_status *status; 1528 int ret; 1529 u32 wakeup_reasons = 0; 1530 __le16 *qos_seq = NULL; 1531 1532 mutex_lock(&mvm->mutex); 1533 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1534 if (ret) 1535 goto out; 1536 1537 if (!get_status_cmd.resp_pkt) 1538 goto out; 1539 1540 status = (void *)get_status_cmd.resp_pkt->data; 1541 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1542 qos_seq = status->qos_seq_ctr; 1543 1544 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1545 1546 iter_data.wakeup_reasons = wakeup_reasons; 1547 iter_data.status = status; 1548 ieee80211_iterate_active_interfaces(mvm->hw, 1549 IEEE80211_IFACE_ITER_NORMAL, 1550 iwl_mvm_d0i3_exit_work_iter, 1551 &iter_data); 1552 out: 1553 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1554 1555 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1556 wakeup_reasons); 1557 1558 /* qos_seq might point inside resp_pkt, so free it only now */ 1559 if (get_status_cmd.resp_pkt) 1560 iwl_free_resp(&get_status_cmd); 1561 1562 /* the FW might have updated the regdomain */ 1563 iwl_mvm_update_changed_regdom(mvm); 1564 1565 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1566 mutex_unlock(&mvm->mutex); 1567 } 1568 1569 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1570 { 1571 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1572 CMD_WAKE_UP_TRANS; 1573 int ret; 1574 1575 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1576 1577 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1578 return -EINVAL; 1579 1580 mutex_lock(&mvm->d0i3_suspend_mutex); 1581 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1582 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1583 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1584 mutex_unlock(&mvm->d0i3_suspend_mutex); 1585 return 0; 1586 } 1587 mutex_unlock(&mvm->d0i3_suspend_mutex); 1588 1589 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1590 if (ret) 1591 goto out; 1592 1593 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1594 IEEE80211_IFACE_ITER_NORMAL, 1595 iwl_mvm_exit_d0i3_iterator, 1596 mvm); 1597 out: 1598 schedule_work(&mvm->d0i3_exit_work); 1599 return ret; 1600 } 1601 1602 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1603 { 1604 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1605 1606 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1607 return _iwl_mvm_exit_d0i3(mvm); 1608 } 1609 1610 #define IWL_MVM_COMMON_OPS \ 1611 /* these could be differentiated */ \ 1612 .async_cb = iwl_mvm_async_cb, \ 1613 .queue_full = iwl_mvm_stop_sw_queue, \ 1614 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1615 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1616 .free_skb = iwl_mvm_free_skb, \ 1617 .nic_error = iwl_mvm_nic_error, \ 1618 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1619 .nic_config = iwl_mvm_nic_config, \ 1620 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1621 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1622 /* as we only register one, these MUST be common! */ \ 1623 .start = iwl_op_mode_mvm_start, \ 1624 .stop = iwl_op_mode_mvm_stop 1625 1626 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1627 IWL_MVM_COMMON_OPS, 1628 .rx = iwl_mvm_rx, 1629 }; 1630 1631 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1632 struct napi_struct *napi, 1633 struct iwl_rx_cmd_buffer *rxb, 1634 unsigned int queue) 1635 { 1636 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1637 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1638 1639 if (unlikely(pkt->hdr.cmd == FRAME_RELEASE)) 1640 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1641 else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION && 1642 pkt->hdr.group_id == DATA_PATH_GROUP)) 1643 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1644 else 1645 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1646 } 1647 1648 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1649 IWL_MVM_COMMON_OPS, 1650 .rx = iwl_mvm_rx_mq, 1651 .rx_rss = iwl_mvm_rx_mq_rss, 1652 }; 1653