Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 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 | * |
Emmanuel Grumbach | 51368bf | 2013-12-30 13:15:54 +0200 | [diff] [blame] | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of version 2 of the GNU General Public License as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| 22 | * USA |
| 23 | * |
| 24 | * The full GNU General Public License is included in this distribution |
Emmanuel Grumbach | 410dc5a | 2013-02-18 09:22:28 +0200 | [diff] [blame] | 25 | * in the file called COPYING. |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 26 | * |
| 27 | * Contact Information: |
| 28 | * Intel Linux Wireless <ilw@linux.intel.com> |
| 29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 30 | * |
| 31 | * BSD LICENSE |
| 32 | * |
Emmanuel Grumbach | 51368bf | 2013-12-30 13:15:54 +0200 | [diff] [blame] | 33 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 34 | * All rights reserved. |
| 35 | * |
| 36 | * Redistribution and use in source and binary forms, with or without |
| 37 | * modification, are permitted provided that the following conditions |
| 38 | * are met: |
| 39 | * |
| 40 | * * Redistributions of source code must retain the above copyright |
| 41 | * notice, this list of conditions and the following disclaimer. |
| 42 | * * Redistributions in binary form must reproduce the above copyright |
| 43 | * notice, this list of conditions and the following disclaimer in |
| 44 | * the documentation and/or other materials provided with the |
| 45 | * distribution. |
| 46 | * * Neither the name Intel Corporation nor the names of its |
| 47 | * contributors may be used to endorse or promote products derived |
| 48 | * from this software without specific prior written permission. |
| 49 | * |
| 50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 61 | * |
| 62 | *****************************************************************************/ |
| 63 | #include <linux/module.h> |
| 64 | #include <net/mac80211.h> |
| 65 | |
| 66 | #include "iwl-notif-wait.h" |
| 67 | #include "iwl-trans.h" |
| 68 | #include "iwl-op-mode.h" |
| 69 | #include "iwl-fw.h" |
| 70 | #include "iwl-debug.h" |
| 71 | #include "iwl-drv.h" |
| 72 | #include "iwl-modparams.h" |
| 73 | #include "mvm.h" |
| 74 | #include "iwl-phy-db.h" |
| 75 | #include "iwl-eeprom-parse.h" |
| 76 | #include "iwl-csr.h" |
| 77 | #include "iwl-io.h" |
| 78 | #include "iwl-prph.h" |
| 79 | #include "rs.h" |
| 80 | #include "fw-api-scan.h" |
| 81 | #include "time-event.h" |
| 82 | |
| 83 | /* |
| 84 | * module name, copyright, version, etc. |
| 85 | */ |
| 86 | #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" |
| 87 | |
| 88 | #define DRV_VERSION IWLWIFI_VERSION |
| 89 | |
| 90 | MODULE_DESCRIPTION(DRV_DESCRIPTION); |
| 91 | MODULE_VERSION(DRV_VERSION); |
| 92 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
| 93 | MODULE_LICENSE("GPL"); |
| 94 | |
| 95 | static const struct iwl_op_mode_ops iwl_mvm_ops; |
| 96 | |
| 97 | struct iwl_mvm_mod_params iwlmvm_mod_params = { |
| 98 | .power_scheme = IWL_POWER_SCHEME_BPS, |
| 99 | /* rest of fields are 0 by default */ |
| 100 | }; |
| 101 | |
| 102 | module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); |
| 103 | MODULE_PARM_DESC(init_dbg, |
| 104 | "set to true to debug an ASSERT in INIT fw (default: false"); |
| 105 | module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); |
| 106 | MODULE_PARM_DESC(power_scheme, |
| 107 | "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); |
| 108 | |
| 109 | /* |
| 110 | * module init and exit functions |
| 111 | */ |
| 112 | static int __init iwl_mvm_init(void) |
| 113 | { |
| 114 | int ret; |
| 115 | |
| 116 | ret = iwl_mvm_rate_control_register(); |
| 117 | if (ret) { |
| 118 | pr_err("Unable to register rate control algorithm: %d\n", ret); |
| 119 | return ret; |
| 120 | } |
| 121 | |
| 122 | ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); |
| 123 | |
| 124 | if (ret) { |
| 125 | pr_err("Unable to register MVM op_mode: %d\n", ret); |
| 126 | iwl_mvm_rate_control_unregister(); |
| 127 | } |
| 128 | |
| 129 | return ret; |
| 130 | } |
| 131 | module_init(iwl_mvm_init); |
| 132 | |
| 133 | static void __exit iwl_mvm_exit(void) |
| 134 | { |
| 135 | iwl_opmode_deregister("iwlmvm"); |
| 136 | iwl_mvm_rate_control_unregister(); |
| 137 | } |
| 138 | module_exit(iwl_mvm_exit); |
| 139 | |
| 140 | static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) |
| 141 | { |
| 142 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 143 | u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; |
| 144 | u32 reg_val = 0; |
| 145 | |
Emmanuel Grumbach | d110cb5 | 2013-03-07 17:27:40 +0200 | [diff] [blame] | 146 | radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >> |
| 147 | FW_PHY_CFG_RADIO_TYPE_POS; |
| 148 | radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >> |
| 149 | FW_PHY_CFG_RADIO_STEP_POS; |
| 150 | radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >> |
| 151 | FW_PHY_CFG_RADIO_DASH_POS; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 152 | |
| 153 | /* SKU control */ |
| 154 | reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << |
| 155 | CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; |
| 156 | reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << |
| 157 | CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; |
| 158 | |
| 159 | /* radio configuration */ |
| 160 | reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; |
| 161 | reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; |
| 162 | reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; |
| 163 | |
| 164 | WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & |
| 165 | ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); |
| 166 | |
| 167 | /* silicon bits */ |
| 168 | reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 169 | |
Lilach Edelstein | e139dc4 | 2013-01-13 13:31:10 +0200 | [diff] [blame] | 170 | iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, |
| 171 | CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | |
| 172 | CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | |
| 173 | CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | |
| 174 | CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | |
| 175 | CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | |
| 176 | CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | |
| 177 | CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, |
| 178 | reg_val); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 179 | |
| 180 | IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, |
| 181 | radio_cfg_step, radio_cfg_dash); |
| 182 | |
| 183 | /* |
| 184 | * W/A : NIC is stuck in a reset state after Early PCIe power off |
| 185 | * (PCIe power is lost before PERST# is asserted), causing ME FW |
| 186 | * to lose ownership and not being able to obtain it back. |
| 187 | */ |
Eran Harary | 3073d8c | 2013-12-29 14:09:59 +0200 | [diff] [blame] | 188 | if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) |
| 189 | iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, |
| 190 | APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, |
| 191 | ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | struct iwl_rx_handlers { |
| 195 | u8 cmd_id; |
| 196 | bool async; |
| 197 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, |
| 198 | struct iwl_device_cmd *cmd); |
| 199 | }; |
| 200 | |
| 201 | #define RX_HANDLER(_cmd_id, _fn, _async) \ |
| 202 | { .cmd_id = _cmd_id , .fn = _fn , .async = _async } |
| 203 | |
| 204 | /* |
| 205 | * Handlers for fw notifications |
| 206 | * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME |
| 207 | * This list should be in order of frequency for performance purposes. |
| 208 | * |
| 209 | * The handler can be SYNC - this means that it will be called in the Rx path |
| 210 | * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and |
| 211 | * only in this case!), it should be set as ASYNC. In that case, it will be |
| 212 | * called from a worker with mvm->mutex held. |
| 213 | */ |
| 214 | static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { |
| 215 | RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), |
| 216 | RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), |
| 217 | RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), |
| 218 | RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 219 | |
Emmanuel Grumbach | f421f9c | 2013-01-17 14:20:29 +0200 | [diff] [blame] | 220 | RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), |
Ilan Peer | 571765c | 2013-03-05 15:26:03 +0200 | [diff] [blame] | 221 | RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false), |
Eytan Lifshitz | 9ee718a | 2013-05-19 19:14:41 +0300 | [diff] [blame] | 222 | RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true), |
Emmanuel Grumbach | b9fae2d | 2014-02-17 11:24:10 +0200 | [diff] [blame] | 223 | RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, |
| 224 | iwl_mvm_rx_ant_coupling_notif, true), |
Emmanuel Grumbach | f421f9c | 2013-01-17 14:20:29 +0200 | [diff] [blame] | 225 | |
Emmanuel Grumbach | 497b49d | 2013-06-02 20:54:48 +0300 | [diff] [blame] | 226 | RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), |
| 227 | |
Johannes Berg | 3e56ead | 2013-02-15 22:23:18 +0100 | [diff] [blame] | 228 | RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false), |
| 229 | |
Emmanuel Grumbach | 497b49d | 2013-06-02 20:54:48 +0300 | [diff] [blame] | 230 | RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), |
Arik Nemtsov | 91b8025 | 2014-02-10 12:49:39 +0200 | [diff] [blame] | 231 | RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true), |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 232 | RX_HANDLER(SCAN_OFFLOAD_COMPLETE, |
Johannes Berg | a6623e8 | 2014-01-27 15:40:53 +0100 | [diff] [blame] | 233 | iwl_mvm_rx_scan_offload_complete_notif, true), |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 234 | RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results, |
| 235 | false), |
Emmanuel Grumbach | 497b49d | 2013-06-02 20:54:48 +0300 | [diff] [blame] | 236 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 237 | RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), |
| 238 | RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), |
| 239 | |
Hila Gonen | d64048e | 2013-03-13 18:00:03 +0200 | [diff] [blame] | 240 | RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, |
| 241 | false), |
| 242 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 243 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), |
Alexander Bondar | 175a70b | 2013-04-14 20:59:37 +0300 | [diff] [blame] | 244 | RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, |
| 245 | iwl_mvm_power_uapsd_misbehaving_ap_notif, false), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 246 | }; |
| 247 | #undef RX_HANDLER |
| 248 | #define CMD(x) [x] = #x |
| 249 | |
Johannes Berg | e520926 | 2014-01-20 23:38:59 +0100 | [diff] [blame] | 250 | static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 251 | CMD(MVM_ALIVE), |
| 252 | CMD(REPLY_ERROR), |
| 253 | CMD(INIT_COMPLETE_NOTIF), |
| 254 | CMD(PHY_CONTEXT_CMD), |
| 255 | CMD(MGMT_MCAST_KEY), |
| 256 | CMD(TX_CMD), |
| 257 | CMD(TXPATH_FLUSH), |
| 258 | CMD(MAC_CONTEXT_CMD), |
| 259 | CMD(TIME_EVENT_CMD), |
| 260 | CMD(TIME_EVENT_NOTIFICATION), |
| 261 | CMD(BINDING_CONTEXT_CMD), |
| 262 | CMD(TIME_QUOTA_CMD), |
Johannes Berg | 4ac6cb5 | 2013-08-08 09:30:13 +0200 | [diff] [blame] | 263 | CMD(NON_QOS_TX_COUNTER_CMD), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 264 | CMD(RADIO_VERSION_NOTIFICATION), |
| 265 | CMD(SCAN_REQUEST_CMD), |
| 266 | CMD(SCAN_ABORT_CMD), |
| 267 | CMD(SCAN_START_NOTIFICATION), |
| 268 | CMD(SCAN_RESULTS_NOTIFICATION), |
| 269 | CMD(SCAN_COMPLETE_NOTIFICATION), |
| 270 | CMD(NVM_ACCESS_CMD), |
| 271 | CMD(PHY_CONFIGURATION_CMD), |
| 272 | CMD(CALIB_RES_NOTIF_PHY_DB), |
| 273 | CMD(SET_CALIB_DEFAULT_CMD), |
| 274 | CMD(CALIBRATION_COMPLETE_NOTIFICATION), |
Max Stepanov | 5a258aa | 2013-04-07 09:11:21 +0300 | [diff] [blame] | 275 | CMD(ADD_STA_KEY), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 276 | CMD(ADD_STA), |
| 277 | CMD(REMOVE_STA), |
| 278 | CMD(LQ_CMD), |
| 279 | CMD(SCAN_OFFLOAD_CONFIG_CMD), |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 280 | CMD(MATCH_FOUND_NOTIFICATION), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 281 | CMD(SCAN_OFFLOAD_REQUEST_CMD), |
| 282 | CMD(SCAN_OFFLOAD_ABORT_CMD), |
| 283 | CMD(SCAN_OFFLOAD_COMPLETE), |
| 284 | CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), |
| 285 | CMD(POWER_TABLE_CMD), |
| 286 | CMD(WEP_KEY), |
| 287 | CMD(REPLY_RX_PHY_CMD), |
| 288 | CMD(REPLY_RX_MPDU_CMD), |
Ilan Peer | 571765c | 2013-03-05 15:26:03 +0200 | [diff] [blame] | 289 | CMD(BEACON_NOTIFICATION), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 290 | CMD(BEACON_TEMPLATE_CMD), |
| 291 | CMD(STATISTICS_NOTIFICATION), |
Johannes Berg | 3e56ead | 2013-02-15 22:23:18 +0100 | [diff] [blame] | 292 | CMD(EOSP_NOTIFICATION), |
Matti Gottlieb | 88f2fd7 | 2013-07-09 15:25:46 +0300 | [diff] [blame] | 293 | CMD(REDUCE_TX_POWER_CMD), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 294 | CMD(TX_ANT_CONFIGURATION_CMD), |
| 295 | CMD(D3_CONFIG_CMD), |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 296 | CMD(D0I3_END_CMD), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 297 | CMD(PROT_OFFLOAD_CONFIG_CMD), |
| 298 | CMD(OFFLOADS_QUERY_CMD), |
| 299 | CMD(REMOTE_WAKE_CONFIG_CMD), |
| 300 | CMD(WOWLAN_PATTERNS), |
| 301 | CMD(WOWLAN_CONFIGURATION), |
| 302 | CMD(WOWLAN_TSC_RSC_PARAM), |
| 303 | CMD(WOWLAN_TKIP_PARAM), |
| 304 | CMD(WOWLAN_KEK_KCK_MATERIAL), |
| 305 | CMD(WOWLAN_GET_STATUSES), |
| 306 | CMD(WOWLAN_TX_POWER_PER_DB), |
| 307 | CMD(NET_DETECT_CONFIG_CMD), |
| 308 | CMD(NET_DETECT_PROFILES_QUERY_CMD), |
| 309 | CMD(NET_DETECT_PROFILES_CMD), |
| 310 | CMD(NET_DETECT_HOTSPOTS_CMD), |
| 311 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), |
Emmanuel Grumbach | 3b4612f | 2013-03-03 09:14:51 +0200 | [diff] [blame] | 312 | CMD(CARD_STATE_NOTIFICATION), |
Hila Gonen | d64048e | 2013-03-13 18:00:03 +0200 | [diff] [blame] | 313 | CMD(MISSED_BEACONS_NOTIFICATION), |
Emmanuel Grumbach | fb3ceb8 | 2013-01-14 15:04:01 +0200 | [diff] [blame] | 314 | CMD(BT_COEX_PRIO_TABLE), |
| 315 | CMD(BT_COEX_PROT_ENV), |
| 316 | CMD(BT_PROFILE_NOTIFICATION), |
| 317 | CMD(BT_CONFIG), |
Emmanuel Grumbach | 51b6b9e | 2013-05-02 15:01:24 +0300 | [diff] [blame] | 318 | CMD(MCAST_FILTER_CMD), |
Eliad Peller | c87163b | 2014-01-08 10:11:11 +0200 | [diff] [blame] | 319 | CMD(BCAST_FILTER_CMD), |
David Spinadel | 7a06a38 | 2014-01-09 09:55:38 +0200 | [diff] [blame] | 320 | CMD(REPLY_SF_CFG_CMD), |
Hila Gonen | 7df15b1 | 2012-12-12 11:16:19 +0200 | [diff] [blame] | 321 | CMD(REPLY_BEACON_FILTERING_CMD), |
Eytan Lifshitz | 9ee718a | 2013-05-19 19:14:41 +0300 | [diff] [blame] | 322 | CMD(REPLY_THERMAL_MNG_BACKOFF), |
Alexander Bondar | e811ada | 2013-03-10 15:29:44 +0200 | [diff] [blame] | 323 | CMD(MAC_PM_POWER_TABLE), |
Emmanuel Grumbach | dac94da | 2013-06-18 07:35:27 +0300 | [diff] [blame] | 324 | CMD(BT_COEX_CI), |
Alexander Bondar | 175a70b | 2013-04-14 20:59:37 +0300 | [diff] [blame] | 325 | CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), |
Emmanuel Grumbach | b9fae2d | 2014-02-17 11:24:10 +0200 | [diff] [blame] | 326 | CMD(ANTENNA_COUPLING_NOTIFICATION), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 327 | }; |
| 328 | #undef CMD |
| 329 | |
| 330 | /* this forward declaration can avoid to export the function */ |
| 331 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 332 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 333 | |
Ido Yariv | 0c0e2c7 | 2014-01-16 21:12:02 -0500 | [diff] [blame] | 334 | static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) |
| 335 | { |
| 336 | const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; |
| 337 | |
| 338 | if (!pwr_tx_backoff) |
| 339 | return 0; |
| 340 | |
| 341 | while (pwr_tx_backoff->pwr) { |
| 342 | if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) |
| 343 | return pwr_tx_backoff->backoff; |
| 344 | |
| 345 | pwr_tx_backoff++; |
| 346 | } |
| 347 | |
| 348 | return 0; |
| 349 | } |
| 350 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 351 | static struct iwl_op_mode * |
| 352 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, |
| 353 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) |
| 354 | { |
| 355 | struct ieee80211_hw *hw; |
| 356 | struct iwl_op_mode *op_mode; |
| 357 | struct iwl_mvm *mvm; |
| 358 | struct iwl_trans_config trans_cfg = {}; |
| 359 | static const u8 no_reclaim_cmds[] = { |
| 360 | TX_CMD, |
| 361 | }; |
| 362 | int err, scan_size; |
Ido Yariv | 0c0e2c7 | 2014-01-16 21:12:02 -0500 | [diff] [blame] | 363 | u32 min_backoff; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 364 | |
Emmanuel Grumbach | c4d8327 | 2014-01-14 08:45:26 +0200 | [diff] [blame] | 365 | /* |
| 366 | * We use IWL_MVM_STATION_COUNT to check the validity of the station |
| 367 | * index all over the driver - check that its value corresponds to the |
| 368 | * array size. |
| 369 | */ |
| 370 | BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); |
| 371 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 372 | /******************************** |
| 373 | * 1. Allocating and configuring HW data |
| 374 | ********************************/ |
| 375 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + |
| 376 | sizeof(struct iwl_mvm), |
| 377 | &iwl_mvm_hw_ops); |
| 378 | if (!hw) |
| 379 | return NULL; |
| 380 | |
| 381 | op_mode = hw->priv; |
| 382 | op_mode->ops = &iwl_mvm_ops; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 383 | |
| 384 | mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 385 | mvm->dev = trans->dev; |
| 386 | mvm->trans = trans; |
| 387 | mvm->cfg = cfg; |
| 388 | mvm->fw = fw; |
| 389 | mvm->hw = hw; |
| 390 | |
Eran Harary | 291aa7c | 2013-07-03 11:00:06 +0300 | [diff] [blame] | 391 | mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; |
| 392 | |
Eytan Lifshitz | 19e737c | 2013-09-09 13:30:15 +0200 | [diff] [blame] | 393 | mvm->aux_queue = 15; |
| 394 | mvm->first_agg_queue = 16; |
| 395 | mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; |
| 396 | if (mvm->cfg->base_params->num_of_queues == 16) { |
| 397 | mvm->aux_queue = 11; |
| 398 | mvm->first_agg_queue = 12; |
| 399 | } |
Lilach Edelstein | 1f3b0ff | 2013-10-06 13:03:32 +0200 | [diff] [blame] | 400 | mvm->sf_state = SF_UNINIT; |
Eytan Lifshitz | 19e737c | 2013-09-09 13:30:15 +0200 | [diff] [blame] | 401 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 402 | mutex_init(&mvm->mutex); |
| 403 | spin_lock_init(&mvm->async_handlers_lock); |
| 404 | INIT_LIST_HEAD(&mvm->time_event_list); |
| 405 | INIT_LIST_HEAD(&mvm->async_handlers_list); |
| 406 | spin_lock_init(&mvm->time_event_lock); |
| 407 | |
| 408 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); |
| 409 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); |
| 410 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 411 | INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 412 | |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 413 | spin_lock_init(&mvm->d0i3_tx_lock); |
| 414 | skb_queue_head_init(&mvm->d0i3_tx); |
| 415 | init_waitqueue_head(&mvm->d0i3_exit_waitq); |
| 416 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 417 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); |
| 418 | |
| 419 | /* |
| 420 | * Populate the state variables that the transport layer needs |
| 421 | * to know about. |
| 422 | */ |
| 423 | trans_cfg.op_mode = op_mode; |
| 424 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; |
| 425 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); |
| 426 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; |
| 427 | |
Emmanuel Grumbach | 25b9ea5 | 2013-03-06 11:53:38 +0200 | [diff] [blame] | 428 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 429 | trans_cfg.bc_table_dword = true; |
| 430 | |
| 431 | if (!iwlwifi_mod_params.wd_disable) |
| 432 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; |
| 433 | else |
| 434 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; |
| 435 | |
| 436 | trans_cfg.command_names = iwl_mvm_cmd_strings; |
| 437 | |
| 438 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; |
| 439 | trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO; |
| 440 | |
| 441 | snprintf(mvm->hw->wiphy->fw_version, |
| 442 | sizeof(mvm->hw->wiphy->fw_version), |
| 443 | "%s", fw->fw_version); |
| 444 | |
| 445 | /* Configure transport layer */ |
| 446 | iwl_trans_configure(mvm->trans, &trans_cfg); |
| 447 | |
| 448 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; |
| 449 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); |
| 450 | |
| 451 | /* set up notification wait support */ |
| 452 | iwl_notification_wait_init(&mvm->notif_wait); |
| 453 | |
| 454 | /* Init phy db */ |
| 455 | mvm->phy_db = iwl_phy_db_init(trans); |
| 456 | if (!mvm->phy_db) { |
| 457 | IWL_ERR(mvm, "Cannot init phy_db\n"); |
| 458 | goto out_free; |
| 459 | } |
| 460 | |
| 461 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", |
| 462 | mvm->cfg->name, mvm->trans->hw_rev); |
| 463 | |
Ido Yariv | 0c0e2c7 | 2014-01-16 21:12:02 -0500 | [diff] [blame] | 464 | min_backoff = calc_min_backoff(trans, cfg); |
| 465 | iwl_mvm_tt_initialize(mvm, min_backoff); |
Eytan Lifshitz | 9ee718a | 2013-05-19 19:14:41 +0300 | [diff] [blame] | 466 | |
Eytan Lifshitz | 81a67e3 | 2013-09-11 12:39:18 +0200 | [diff] [blame] | 467 | /* |
| 468 | * If the NVM exists in an external file, |
| 469 | * there is no need to unnecessarily power up the NIC at driver load |
| 470 | */ |
| 471 | if (iwlwifi_mod_params.nvm_file) { |
Eliad Peller | 8c678ed | 2013-12-09 13:15:02 +0200 | [diff] [blame] | 472 | err = iwl_nvm_init(mvm); |
| 473 | if (err) |
| 474 | goto out_free; |
Eytan Lifshitz | 81a67e3 | 2013-09-11 12:39:18 +0200 | [diff] [blame] | 475 | } else { |
| 476 | err = iwl_trans_start_hw(mvm->trans); |
| 477 | if (err) |
| 478 | goto out_free; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 479 | |
Eytan Lifshitz | 81a67e3 | 2013-09-11 12:39:18 +0200 | [diff] [blame] | 480 | mutex_lock(&mvm->mutex); |
| 481 | err = iwl_run_init_mvm_ucode(mvm, true); |
Arik Nemtsov | a408284 | 2013-11-24 19:10:46 +0200 | [diff] [blame] | 482 | iwl_trans_stop_device(trans); |
Eytan Lifshitz | 81a67e3 | 2013-09-11 12:39:18 +0200 | [diff] [blame] | 483 | mutex_unlock(&mvm->mutex); |
| 484 | /* returns 0 if successful, 1 if success but in rfkill */ |
| 485 | if (err < 0 && !iwlmvm_mod_params.init_dbg) { |
| 486 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); |
| 487 | goto out_free; |
| 488 | } |
Eytan Lifshitz | 81a67e3 | 2013-09-11 12:39:18 +0200 | [diff] [blame] | 489 | } |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 490 | |
| 491 | scan_size = sizeof(struct iwl_scan_cmd) + |
| 492 | mvm->fw->ucode_capa.max_probe_length + |
| 493 | (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel)); |
| 494 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); |
| 495 | if (!mvm->scan_cmd) |
| 496 | goto out_free; |
| 497 | |
| 498 | err = iwl_mvm_mac_setup_register(mvm); |
| 499 | if (err) |
| 500 | goto out_free; |
| 501 | |
| 502 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); |
| 503 | if (err) |
| 504 | goto out_unregister; |
| 505 | |
Matti Gottlieb | 3848ab6 | 2013-07-30 15:29:37 +0300 | [diff] [blame] | 506 | memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); |
| 507 | |
Eliad Peller | 7498cf4 | 2014-01-16 17:10:44 +0200 | [diff] [blame] | 508 | /* rpm starts with a taken ref. only set the appropriate bit here. */ |
| 509 | set_bit(IWL_MVM_REF_UCODE_DOWN, mvm->ref_bitmap); |
| 510 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 511 | return op_mode; |
| 512 | |
| 513 | out_unregister: |
| 514 | ieee80211_unregister_hw(mvm->hw); |
Eliad Peller | 91b0d11 | 2014-01-05 12:41:12 +0200 | [diff] [blame] | 515 | iwl_mvm_leds_exit(mvm); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 516 | out_free: |
| 517 | iwl_phy_db_free(mvm->phy_db); |
| 518 | kfree(mvm->scan_cmd); |
Eytan Lifshitz | 81a67e3 | 2013-09-11 12:39:18 +0200 | [diff] [blame] | 519 | if (!iwlwifi_mod_params.nvm_file) |
Arik Nemtsov | a408284 | 2013-11-24 19:10:46 +0200 | [diff] [blame] | 520 | iwl_trans_op_mode_leave(trans); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 521 | ieee80211_free_hw(mvm->hw); |
| 522 | return NULL; |
| 523 | } |
| 524 | |
| 525 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) |
| 526 | { |
| 527 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 528 | int i; |
| 529 | |
| 530 | iwl_mvm_leds_exit(mvm); |
| 531 | |
Eytan Lifshitz | 9ee718a | 2013-05-19 19:14:41 +0300 | [diff] [blame] | 532 | iwl_mvm_tt_exit(mvm); |
| 533 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 534 | ieee80211_unregister_hw(mvm->hw); |
| 535 | |
| 536 | kfree(mvm->scan_cmd); |
Eliad Peller | e59647e | 2013-11-28 14:08:50 +0200 | [diff] [blame] | 537 | kfree(mvm->mcast_filter_cmd); |
| 538 | mvm->mcast_filter_cmd = NULL; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 539 | |
Johannes Berg | afc66bb | 2013-05-03 11:44:16 +0200 | [diff] [blame] | 540 | #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) |
| 541 | kfree(mvm->d3_resume_sram); |
| 542 | #endif |
| 543 | |
Arik Nemtsov | a408284 | 2013-11-24 19:10:46 +0200 | [diff] [blame] | 544 | iwl_trans_op_mode_leave(mvm->trans); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 545 | |
| 546 | iwl_phy_db_free(mvm->phy_db); |
| 547 | mvm->phy_db = NULL; |
| 548 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 549 | iwl_free_nvm_data(mvm->nvm_data); |
Eran Harary | ae2b21b | 2014-01-09 08:08:24 +0200 | [diff] [blame] | 550 | for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 551 | kfree(mvm->nvm_sections[i].data); |
| 552 | |
| 553 | ieee80211_free_hw(mvm->hw); |
| 554 | } |
| 555 | |
| 556 | struct iwl_async_handler_entry { |
| 557 | struct list_head list; |
| 558 | struct iwl_rx_cmd_buffer rxb; |
| 559 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, |
| 560 | struct iwl_device_cmd *cmd); |
| 561 | }; |
| 562 | |
| 563 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) |
| 564 | { |
| 565 | struct iwl_async_handler_entry *entry, *tmp; |
| 566 | |
| 567 | spin_lock_bh(&mvm->async_handlers_lock); |
| 568 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { |
| 569 | iwl_free_rxb(&entry->rxb); |
| 570 | list_del(&entry->list); |
| 571 | kfree(entry); |
| 572 | } |
| 573 | spin_unlock_bh(&mvm->async_handlers_lock); |
| 574 | } |
| 575 | |
| 576 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) |
| 577 | { |
| 578 | struct iwl_mvm *mvm = |
| 579 | container_of(wk, struct iwl_mvm, async_handlers_wk); |
| 580 | struct iwl_async_handler_entry *entry, *tmp; |
| 581 | struct list_head local_list; |
| 582 | |
| 583 | INIT_LIST_HEAD(&local_list); |
| 584 | |
| 585 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ |
| 586 | mutex_lock(&mvm->mutex); |
| 587 | |
| 588 | /* |
| 589 | * Sync with Rx path with a lock. Remove all the entries from this list, |
| 590 | * add them to a local one (lock free), and then handle them. |
| 591 | */ |
| 592 | spin_lock_bh(&mvm->async_handlers_lock); |
| 593 | list_splice_init(&mvm->async_handlers_list, &local_list); |
| 594 | spin_unlock_bh(&mvm->async_handlers_lock); |
| 595 | |
| 596 | list_for_each_entry_safe(entry, tmp, &local_list, list) { |
| 597 | if (entry->fn(mvm, &entry->rxb, NULL)) |
| 598 | IWL_WARN(mvm, |
| 599 | "returned value from ASYNC handlers are ignored\n"); |
| 600 | iwl_free_rxb(&entry->rxb); |
| 601 | list_del(&entry->list); |
| 602 | kfree(entry); |
| 603 | } |
| 604 | mutex_unlock(&mvm->mutex); |
| 605 | } |
| 606 | |
| 607 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, |
| 608 | struct iwl_rx_cmd_buffer *rxb, |
| 609 | struct iwl_device_cmd *cmd) |
| 610 | { |
| 611 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 612 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 613 | u8 i; |
| 614 | |
| 615 | /* |
| 616 | * Do the notification wait before RX handlers so |
| 617 | * even if the RX handler consumes the RXB we have |
| 618 | * access to it in the notification wait entry. |
| 619 | */ |
| 620 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); |
| 621 | |
| 622 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { |
| 623 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; |
Emmanuel Grumbach | 36eed56 | 2013-02-10 13:25:25 +0200 | [diff] [blame] | 624 | struct iwl_async_handler_entry *entry; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 625 | |
Emmanuel Grumbach | 36eed56 | 2013-02-10 13:25:25 +0200 | [diff] [blame] | 626 | if (rx_h->cmd_id != pkt->hdr.cmd) |
| 627 | continue; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 628 | |
Emmanuel Grumbach | 36eed56 | 2013-02-10 13:25:25 +0200 | [diff] [blame] | 629 | if (!rx_h->async) |
| 630 | return rx_h->fn(mvm, rxb, cmd); |
| 631 | |
| 632 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
| 633 | /* we can't do much... */ |
| 634 | if (!entry) |
| 635 | return 0; |
| 636 | |
| 637 | entry->rxb._page = rxb_steal_page(rxb); |
| 638 | entry->rxb._offset = rxb->_offset; |
| 639 | entry->rxb._rx_page_order = rxb->_rx_page_order; |
| 640 | entry->fn = rx_h->fn; |
| 641 | spin_lock(&mvm->async_handlers_lock); |
| 642 | list_add_tail(&entry->list, &mvm->async_handlers_list); |
| 643 | spin_unlock(&mvm->async_handlers_lock); |
| 644 | schedule_work(&mvm->async_handlers_wk); |
| 645 | break; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | return 0; |
| 649 | } |
| 650 | |
| 651 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) |
| 652 | { |
| 653 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 654 | int mq = mvm->queue_to_mac80211[queue]; |
| 655 | |
| 656 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) |
| 657 | return; |
| 658 | |
| 659 | if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) { |
| 660 | IWL_DEBUG_TX_QUEUES(mvm, |
| 661 | "queue %d (mac80211 %d) already stopped\n", |
| 662 | queue, mq); |
| 663 | return; |
| 664 | } |
| 665 | |
| 666 | set_bit(mq, &mvm->transport_queue_stop); |
| 667 | ieee80211_stop_queue(mvm->hw, mq); |
| 668 | } |
| 669 | |
| 670 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) |
| 671 | { |
| 672 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 673 | int mq = mvm->queue_to_mac80211[queue]; |
| 674 | |
| 675 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) |
| 676 | return; |
| 677 | |
| 678 | if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) { |
| 679 | IWL_DEBUG_TX_QUEUES(mvm, |
| 680 | "queue %d (mac80211 %d) already awake\n", |
| 681 | queue, mq); |
| 682 | return; |
| 683 | } |
| 684 | |
| 685 | clear_bit(mq, &mvm->transport_queue_stop); |
| 686 | |
| 687 | ieee80211_wake_queue(mvm->hw, mq); |
| 688 | } |
| 689 | |
Eytan Lifshitz | 9ee718a | 2013-05-19 19:14:41 +0300 | [diff] [blame] | 690 | void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) |
| 691 | { |
| 692 | if (state) |
| 693 | set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); |
| 694 | else |
| 695 | clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); |
| 696 | |
| 697 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); |
| 698 | } |
| 699 | |
Johannes Berg | 14cfca7 | 2014-02-25 20:50:53 +0100 | [diff] [blame] | 700 | static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 701 | { |
| 702 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 703 | |
| 704 | if (state) |
| 705 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); |
| 706 | else |
| 707 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); |
| 708 | |
Eytan Lifshitz | 9ee718a | 2013-05-19 19:14:41 +0300 | [diff] [blame] | 709 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); |
Johannes Berg | 14cfca7 | 2014-02-25 20:50:53 +0100 | [diff] [blame] | 710 | |
| 711 | return state && mvm->cur_ucode != IWL_UCODE_INIT; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) |
| 715 | { |
| 716 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 717 | struct ieee80211_tx_info *info; |
| 718 | |
| 719 | info = IEEE80211_SKB_CB(skb); |
| 720 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); |
| 721 | ieee80211_free_txskb(mvm->hw, skb); |
| 722 | } |
| 723 | |
Johannes Berg | ac1ed41 | 2013-07-04 15:25:25 +0200 | [diff] [blame] | 724 | struct iwl_mvm_reprobe { |
| 725 | struct device *dev; |
| 726 | struct work_struct work; |
| 727 | }; |
| 728 | |
| 729 | static void iwl_mvm_reprobe_wk(struct work_struct *wk) |
| 730 | { |
| 731 | struct iwl_mvm_reprobe *reprobe; |
| 732 | |
| 733 | reprobe = container_of(wk, struct iwl_mvm_reprobe, work); |
| 734 | if (device_reprobe(reprobe->dev)) |
| 735 | dev_err(reprobe->dev, "reprobe failed!\n"); |
| 736 | kfree(reprobe); |
| 737 | module_put(THIS_MODULE); |
| 738 | } |
| 739 | |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 740 | static void iwl_mvm_nic_restart(struct iwl_mvm *mvm) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 741 | { |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 742 | iwl_abort_notification_waits(&mvm->notif_wait); |
| 743 | |
| 744 | /* |
David Spinadel | 992f81f | 2014-01-09 14:22:55 +0200 | [diff] [blame] | 745 | * This is a bit racy, but worst case we tell mac80211 about |
| 746 | * a stopped/aborted scan when that was already done which |
| 747 | * is not a problem. It is necessary to abort any os scan |
| 748 | * here because mac80211 requires having the scan cleared |
| 749 | * before restarting. |
| 750 | * We'll reset the scan_status to NONE in restart cleanup in |
| 751 | * the next start() call from mac80211. If restart isn't called |
| 752 | * (no fw restart) scan status will stay busy. |
| 753 | */ |
| 754 | switch (mvm->scan_status) { |
| 755 | case IWL_MVM_SCAN_NONE: |
| 756 | break; |
| 757 | case IWL_MVM_SCAN_OS: |
| 758 | ieee80211_scan_completed(mvm->hw, true); |
| 759 | break; |
| 760 | case IWL_MVM_SCAN_SCHED: |
| 761 | /* Sched scan will be restarted by mac80211 in restart_hw. */ |
| 762 | if (!mvm->restart_fw) |
| 763 | ieee80211_sched_scan_stopped(mvm->hw); |
| 764 | break; |
| 765 | } |
| 766 | |
| 767 | /* |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 768 | * If we're restarting already, don't cycle restarts. |
| 769 | * If INIT fw asserted, it will likely fail again. |
| 770 | * If WoWLAN fw asserted, don't restart either, mac80211 |
| 771 | * can't recover this since we're already half suspended. |
| 772 | */ |
| 773 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { |
Johannes Berg | ac1ed41 | 2013-07-04 15:25:25 +0200 | [diff] [blame] | 774 | struct iwl_mvm_reprobe *reprobe; |
| 775 | |
| 776 | IWL_ERR(mvm, |
| 777 | "Firmware error during reconfiguration - reprobe!\n"); |
| 778 | |
| 779 | /* |
| 780 | * get a module reference to avoid doing this while unloading |
| 781 | * anyway and to avoid scheduling a work with code that's |
| 782 | * being removed. |
| 783 | */ |
| 784 | if (!try_module_get(THIS_MODULE)) { |
| 785 | IWL_ERR(mvm, "Module is being unloaded - abort\n"); |
| 786 | return; |
| 787 | } |
| 788 | |
| 789 | reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); |
| 790 | if (!reprobe) { |
| 791 | module_put(THIS_MODULE); |
| 792 | return; |
| 793 | } |
| 794 | reprobe->dev = mvm->trans->dev; |
| 795 | INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); |
| 796 | schedule_work(&reprobe->work); |
Eran Harary | 291aa7c | 2013-07-03 11:00:06 +0300 | [diff] [blame] | 797 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) { |
Eliad Peller | 7498cf4 | 2014-01-16 17:10:44 +0200 | [diff] [blame] | 798 | /* don't let the transport/FW power down */ |
| 799 | iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); |
| 800 | |
Eran Harary | 291aa7c | 2013-07-03 11:00:06 +0300 | [diff] [blame] | 801 | if (mvm->restart_fw > 0) |
| 802 | mvm->restart_fw--; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 803 | ieee80211_restart_hw(mvm->hw); |
| 804 | } |
| 805 | } |
| 806 | |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 807 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) |
| 808 | { |
| 809 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 810 | |
| 811 | iwl_mvm_dump_nic_error_log(mvm); |
Eran Harary | 291aa7c | 2013-07-03 11:00:06 +0300 | [diff] [blame] | 812 | if (!mvm->restart_fw) |
Matti Gottlieb | 0c393d4 | 2013-07-04 14:47:30 +0300 | [diff] [blame] | 813 | iwl_mvm_dump_sram(mvm); |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 814 | |
| 815 | iwl_mvm_nic_restart(mvm); |
| 816 | } |
| 817 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 818 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) |
| 819 | { |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 820 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 821 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 822 | WARN_ON(1); |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 823 | iwl_mvm_nic_restart(mvm); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 824 | } |
| 825 | |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 826 | struct iwl_d0i3_iter_data { |
| 827 | struct iwl_mvm *mvm; |
| 828 | u8 ap_sta_id; |
| 829 | u8 vif_count; |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 830 | u8 offloading_tid; |
| 831 | bool disable_offloading; |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 832 | }; |
| 833 | |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 834 | static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, |
| 835 | struct ieee80211_vif *vif, |
| 836 | struct iwl_d0i3_iter_data *iter_data) |
| 837 | { |
| 838 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| 839 | struct ieee80211_sta *ap_sta; |
| 840 | struct iwl_mvm_sta *mvmsta; |
| 841 | u32 available_tids = 0; |
| 842 | u8 tid; |
| 843 | |
| 844 | if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || |
| 845 | mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) |
| 846 | return false; |
| 847 | |
| 848 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); |
| 849 | if (IS_ERR_OR_NULL(ap_sta)) |
| 850 | return false; |
| 851 | |
| 852 | mvmsta = iwl_mvm_sta_from_mac80211(ap_sta); |
| 853 | spin_lock_bh(&mvmsta->lock); |
| 854 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { |
| 855 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
| 856 | |
| 857 | /* |
| 858 | * in case of pending tx packets, don't use this tid |
| 859 | * for offloading in order to prevent reuse of the same |
| 860 | * qos seq counters. |
| 861 | */ |
| 862 | if (iwl_mvm_tid_queued(tid_data)) |
| 863 | continue; |
| 864 | |
| 865 | if (tid_data->state != IWL_AGG_OFF) |
| 866 | continue; |
| 867 | |
| 868 | available_tids |= BIT(tid); |
| 869 | } |
| 870 | spin_unlock_bh(&mvmsta->lock); |
| 871 | |
| 872 | /* |
| 873 | * disallow protocol offloading if we have no available tid |
| 874 | * (with no pending frames and no active aggregation, |
| 875 | * as we don't handle "holes" properly - the scheduler needs the |
| 876 | * frame's seq number and TFD index to match) |
| 877 | */ |
| 878 | if (!available_tids) |
| 879 | return true; |
| 880 | |
| 881 | /* for simplicity, just use the first available tid */ |
| 882 | iter_data->offloading_tid = ffs(available_tids) - 1; |
| 883 | return false; |
| 884 | } |
| 885 | |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 886 | static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, |
| 887 | struct ieee80211_vif *vif) |
| 888 | { |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 889 | struct iwl_d0i3_iter_data *data = _data; |
| 890 | struct iwl_mvm *mvm = data->mvm; |
| 891 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 892 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
| 893 | |
| 894 | IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); |
| 895 | if (vif->type != NL80211_IFTYPE_STATION || |
| 896 | !vif->bss_conf.assoc) |
| 897 | return; |
| 898 | |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 899 | /* |
| 900 | * in case of pending tx packets or active aggregations, |
| 901 | * avoid offloading features in order to prevent reuse of |
| 902 | * the same qos seq counters. |
| 903 | */ |
| 904 | if (iwl_mvm_disallow_offloading(mvm, vif, data)) |
| 905 | data->disable_offloading = true; |
| 906 | |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 907 | iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); |
| 908 | |
| 909 | /* |
| 910 | * on init/association, mvm already configures POWER_TABLE_CMD |
| 911 | * and REPLY_MCAST_FILTER_CMD, so currently don't |
| 912 | * reconfigure them (we might want to use different |
| 913 | * params later on, though). |
| 914 | */ |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 915 | data->ap_sta_id = mvmvif->ap_sta_id; |
| 916 | data->vif_count++; |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 917 | } |
| 918 | |
Eliad Peller | 1a95c8d | 2013-11-21 19:19:52 +0200 | [diff] [blame] | 919 | static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, |
| 920 | struct iwl_wowlan_config_cmd_v3 *cmd, |
| 921 | struct iwl_d0i3_iter_data *iter_data) |
| 922 | { |
| 923 | struct ieee80211_sta *ap_sta; |
| 924 | struct iwl_mvm_sta *mvm_ap_sta; |
| 925 | |
| 926 | if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) |
| 927 | return; |
| 928 | |
| 929 | rcu_read_lock(); |
| 930 | |
| 931 | ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); |
| 932 | if (IS_ERR_OR_NULL(ap_sta)) |
| 933 | goto out; |
| 934 | |
| 935 | mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); |
| 936 | cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported; |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 937 | cmd->offloading_tid = iter_data->offloading_tid; |
Eliad Peller | 1a95c8d | 2013-11-21 19:19:52 +0200 | [diff] [blame] | 938 | |
| 939 | /* |
| 940 | * The d0i3 uCode takes care of the nonqos counters, |
| 941 | * so configure only the qos seq ones. |
| 942 | */ |
| 943 | iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common); |
| 944 | out: |
| 945 | rcu_read_unlock(); |
| 946 | } |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 947 | static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) |
| 948 | { |
| 949 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 950 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; |
Eliad Peller | b77f06d | 2013-11-06 10:49:32 +0200 | [diff] [blame] | 951 | int ret; |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 952 | struct iwl_d0i3_iter_data d0i3_iter_data = { |
| 953 | .mvm = mvm, |
| 954 | }; |
Eliad Peller | 1a95c8d | 2013-11-21 19:19:52 +0200 | [diff] [blame] | 955 | struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = { |
| 956 | .common = { |
| 957 | .wakeup_filter = |
| 958 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | |
| 959 | IWL_WOWLAN_WAKEUP_BEACON_MISS | |
| 960 | IWL_WOWLAN_WAKEUP_LINK_CHANGE | |
| 961 | IWL_WOWLAN_WAKEUP_BCN_FILTERING), |
| 962 | }, |
Eliad Peller | b77f06d | 2013-11-06 10:49:32 +0200 | [diff] [blame] | 963 | }; |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 964 | struct iwl_d3_manager_config d3_cfg_cmd = { |
| 965 | .min_sleep_time = cpu_to_le32(1000), |
| 966 | }; |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 967 | |
| 968 | IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 969 | |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 970 | /* make sure we have no running tx while configuring the qos */ |
| 971 | set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); |
| 972 | synchronize_net(); |
| 973 | |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 974 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
| 975 | IEEE80211_IFACE_ITER_NORMAL, |
| 976 | iwl_mvm_enter_d0i3_iterator, |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 977 | &d0i3_iter_data); |
| 978 | if (d0i3_iter_data.vif_count == 1) { |
| 979 | mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 980 | mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 981 | } else { |
| 982 | WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); |
| 983 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 984 | mvm->d0i3_offloading = false; |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 985 | } |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 986 | |
Eliad Peller | 1a95c8d | 2013-11-21 19:19:52 +0200 | [diff] [blame] | 987 | iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data); |
Eliad Peller | b77f06d | 2013-11-06 10:49:32 +0200 | [diff] [blame] | 988 | ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, |
| 989 | sizeof(wowlan_config_cmd), |
| 990 | &wowlan_config_cmd); |
| 991 | if (ret) |
| 992 | return ret; |
| 993 | |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 994 | return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, |
| 995 | flags | CMD_MAKE_TRANS_IDLE, |
| 996 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 997 | } |
| 998 | |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 999 | static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, |
| 1000 | struct ieee80211_vif *vif) |
| 1001 | { |
| 1002 | struct iwl_mvm *mvm = _data; |
| 1003 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; |
| 1004 | |
| 1005 | IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); |
| 1006 | if (vif->type != NL80211_IFTYPE_STATION || |
| 1007 | !vif->bss_conf.assoc) |
| 1008 | return; |
| 1009 | |
| 1010 | iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); |
| 1011 | } |
| 1012 | |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1013 | static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, |
| 1014 | struct ieee80211_vif *vif) |
| 1015 | { |
| 1016 | struct iwl_mvm *mvm = data; |
| 1017 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| 1018 | |
| 1019 | if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && |
| 1020 | mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) |
| 1021 | ieee80211_connection_loss(vif); |
| 1022 | } |
| 1023 | |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 1024 | void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) |
| 1025 | { |
| 1026 | struct ieee80211_sta *sta = NULL; |
| 1027 | struct iwl_mvm_sta *mvm_ap_sta; |
| 1028 | int i; |
| 1029 | bool wake_queues = false; |
| 1030 | |
| 1031 | lockdep_assert_held(&mvm->mutex); |
| 1032 | |
| 1033 | spin_lock_bh(&mvm->d0i3_tx_lock); |
| 1034 | |
| 1035 | if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) |
| 1036 | goto out; |
| 1037 | |
| 1038 | IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); |
| 1039 | |
| 1040 | /* get the sta in order to update seq numbers and re-enqueue skbs */ |
| 1041 | sta = rcu_dereference_protected( |
| 1042 | mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], |
| 1043 | lockdep_is_held(&mvm->mutex)); |
| 1044 | |
| 1045 | if (IS_ERR_OR_NULL(sta)) { |
| 1046 | sta = NULL; |
| 1047 | goto out; |
| 1048 | } |
| 1049 | |
| 1050 | if (mvm->d0i3_offloading && qos_seq) { |
| 1051 | /* update qos seq numbers if offloading was enabled */ |
| 1052 | mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv; |
| 1053 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { |
| 1054 | u16 seq = le16_to_cpu(qos_seq[i]); |
| 1055 | /* firmware stores last-used one, we store next one */ |
| 1056 | seq += 0x10; |
| 1057 | mvm_ap_sta->tid_data[i].seq_number = seq; |
| 1058 | } |
| 1059 | } |
| 1060 | out: |
| 1061 | /* re-enqueue (or drop) all packets */ |
| 1062 | while (!skb_queue_empty(&mvm->d0i3_tx)) { |
| 1063 | struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); |
| 1064 | |
| 1065 | if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) |
| 1066 | ieee80211_free_txskb(mvm->hw, skb); |
| 1067 | |
| 1068 | /* if the skb_queue is not empty, we need to wake queues */ |
| 1069 | wake_queues = true; |
| 1070 | } |
| 1071 | clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); |
| 1072 | wake_up(&mvm->d0i3_exit_waitq); |
| 1073 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; |
| 1074 | if (wake_queues) |
| 1075 | ieee80211_wake_queues(mvm->hw); |
| 1076 | |
| 1077 | spin_unlock_bh(&mvm->d0i3_tx_lock); |
| 1078 | } |
| 1079 | |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1080 | static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) |
| 1081 | { |
| 1082 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); |
| 1083 | struct iwl_host_cmd get_status_cmd = { |
| 1084 | .id = WOWLAN_GET_STATUSES, |
| 1085 | .flags = CMD_SYNC | CMD_HIGH_PRIO | CMD_WANT_SKB, |
| 1086 | }; |
| 1087 | struct iwl_wowlan_status_v6 *status; |
| 1088 | int ret; |
| 1089 | u32 disconnection_reasons, wakeup_reasons; |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 1090 | __le16 *qos_seq = NULL; |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1091 | |
| 1092 | mutex_lock(&mvm->mutex); |
| 1093 | ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); |
| 1094 | if (ret) |
| 1095 | goto out; |
| 1096 | |
| 1097 | if (!get_status_cmd.resp_pkt) |
| 1098 | goto out; |
| 1099 | |
| 1100 | status = (void *)get_status_cmd.resp_pkt->data; |
| 1101 | wakeup_reasons = le32_to_cpu(status->wakeup_reasons); |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 1102 | qos_seq = status->qos_seq_ctr; |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1103 | |
| 1104 | IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); |
| 1105 | |
| 1106 | disconnection_reasons = |
| 1107 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | |
| 1108 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; |
| 1109 | if (wakeup_reasons & disconnection_reasons) |
| 1110 | ieee80211_iterate_active_interfaces( |
| 1111 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, |
| 1112 | iwl_mvm_d0i3_disconnect_iter, mvm); |
| 1113 | |
| 1114 | iwl_free_resp(&get_status_cmd); |
| 1115 | out: |
Arik Nemtsov | b249250 | 2014-03-13 12:21:50 +0200 | [diff] [blame^] | 1116 | iwl_mvm_d0i3_enable_tx(mvm, qos_seq); |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1117 | mutex_unlock(&mvm->mutex); |
| 1118 | } |
| 1119 | |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 1120 | static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) |
| 1121 | { |
| 1122 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 1123 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | |
| 1124 | CMD_WAKE_UP_TRANS; |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 1125 | int ret; |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 1126 | |
| 1127 | IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); |
Arik Nemtsov | 98ee778 | 2013-10-02 16:58:09 +0300 | [diff] [blame] | 1128 | |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 1129 | ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); |
| 1130 | if (ret) |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1131 | goto out; |
Eliad Peller | d623097 | 2013-11-03 20:09:08 +0200 | [diff] [blame] | 1132 | |
| 1133 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
| 1134 | IEEE80211_IFACE_ITER_NORMAL, |
| 1135 | iwl_mvm_exit_d0i3_iterator, |
| 1136 | mvm); |
Eliad Peller | 37577fe | 2013-12-05 17:19:39 +0200 | [diff] [blame] | 1137 | out: |
| 1138 | schedule_work(&mvm->d0i3_exit_work); |
| 1139 | return ret; |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 1140 | } |
| 1141 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 1142 | static const struct iwl_op_mode_ops iwl_mvm_ops = { |
| 1143 | .start = iwl_op_mode_mvm_start, |
| 1144 | .stop = iwl_op_mode_mvm_stop, |
| 1145 | .rx = iwl_mvm_rx_dispatch, |
| 1146 | .queue_full = iwl_mvm_stop_sw_queue, |
| 1147 | .queue_not_full = iwl_mvm_wake_sw_queue, |
| 1148 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, |
| 1149 | .free_skb = iwl_mvm_free_skb, |
| 1150 | .nic_error = iwl_mvm_nic_error, |
| 1151 | .cmd_queue_full = iwl_mvm_cmd_queue_full, |
| 1152 | .nic_config = iwl_mvm_nic_config, |
Eliad Peller | b3370d4 | 2013-11-25 15:20:16 +0200 | [diff] [blame] | 1153 | .enter_d0i3 = iwl_mvm_enter_d0i3, |
| 1154 | .exit_d0i3 = iwl_mvm_exit_d0i3, |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 1155 | }; |