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 | * |
| 8 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. |
| 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 | * |
| 33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. |
| 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 | */ |
| 188 | iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, |
| 189 | APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, |
| 190 | ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); |
| 191 | } |
| 192 | |
| 193 | struct iwl_rx_handlers { |
| 194 | u8 cmd_id; |
| 195 | bool async; |
| 196 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, |
| 197 | struct iwl_device_cmd *cmd); |
| 198 | }; |
| 199 | |
| 200 | #define RX_HANDLER(_cmd_id, _fn, _async) \ |
| 201 | { .cmd_id = _cmd_id , .fn = _fn , .async = _async } |
| 202 | |
| 203 | /* |
| 204 | * Handlers for fw notifications |
| 205 | * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME |
| 206 | * This list should be in order of frequency for performance purposes. |
| 207 | * |
| 208 | * The handler can be SYNC - this means that it will be called in the Rx path |
| 209 | * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and |
| 210 | * only in this case!), it should be set as ASYNC. In that case, it will be |
| 211 | * called from a worker with mvm->mutex held. |
| 212 | */ |
| 213 | static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { |
| 214 | RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), |
| 215 | RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), |
| 216 | RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), |
| 217 | RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), |
| 218 | RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), |
| 219 | |
| 220 | RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), |
| 221 | RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false), |
| 222 | |
Emmanuel Grumbach | f421f9c | 2013-01-17 14:20:29 +0200 | [diff] [blame] | 223 | RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), |
Ilan Peer | 571765c | 2013-03-05 15:26:03 +0200 | [diff] [blame] | 224 | RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false), |
Emmanuel Grumbach | f421f9c | 2013-01-17 14:20:29 +0200 | [diff] [blame] | 225 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 226 | RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), |
| 227 | RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), |
| 228 | |
| 229 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), |
| 230 | }; |
| 231 | #undef RX_HANDLER |
| 232 | #define CMD(x) [x] = #x |
| 233 | |
| 234 | static const char *iwl_mvm_cmd_strings[REPLY_MAX] = { |
| 235 | CMD(MVM_ALIVE), |
| 236 | CMD(REPLY_ERROR), |
| 237 | CMD(INIT_COMPLETE_NOTIF), |
| 238 | CMD(PHY_CONTEXT_CMD), |
| 239 | CMD(MGMT_MCAST_KEY), |
| 240 | CMD(TX_CMD), |
| 241 | CMD(TXPATH_FLUSH), |
| 242 | CMD(MAC_CONTEXT_CMD), |
| 243 | CMD(TIME_EVENT_CMD), |
| 244 | CMD(TIME_EVENT_NOTIFICATION), |
| 245 | CMD(BINDING_CONTEXT_CMD), |
| 246 | CMD(TIME_QUOTA_CMD), |
| 247 | CMD(RADIO_VERSION_NOTIFICATION), |
| 248 | CMD(SCAN_REQUEST_CMD), |
| 249 | CMD(SCAN_ABORT_CMD), |
| 250 | CMD(SCAN_START_NOTIFICATION), |
| 251 | CMD(SCAN_RESULTS_NOTIFICATION), |
| 252 | CMD(SCAN_COMPLETE_NOTIFICATION), |
| 253 | CMD(NVM_ACCESS_CMD), |
| 254 | CMD(PHY_CONFIGURATION_CMD), |
| 255 | CMD(CALIB_RES_NOTIF_PHY_DB), |
| 256 | CMD(SET_CALIB_DEFAULT_CMD), |
| 257 | CMD(CALIBRATION_COMPLETE_NOTIFICATION), |
| 258 | CMD(ADD_STA), |
| 259 | CMD(REMOVE_STA), |
| 260 | CMD(LQ_CMD), |
| 261 | CMD(SCAN_OFFLOAD_CONFIG_CMD), |
| 262 | CMD(SCAN_OFFLOAD_REQUEST_CMD), |
| 263 | CMD(SCAN_OFFLOAD_ABORT_CMD), |
| 264 | CMD(SCAN_OFFLOAD_COMPLETE), |
| 265 | CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), |
| 266 | CMD(POWER_TABLE_CMD), |
| 267 | CMD(WEP_KEY), |
| 268 | CMD(REPLY_RX_PHY_CMD), |
| 269 | CMD(REPLY_RX_MPDU_CMD), |
Ilan Peer | 571765c | 2013-03-05 15:26:03 +0200 | [diff] [blame] | 270 | CMD(BEACON_NOTIFICATION), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 271 | CMD(BEACON_TEMPLATE_CMD), |
| 272 | CMD(STATISTICS_NOTIFICATION), |
| 273 | CMD(TX_ANT_CONFIGURATION_CMD), |
| 274 | CMD(D3_CONFIG_CMD), |
| 275 | CMD(PROT_OFFLOAD_CONFIG_CMD), |
| 276 | CMD(OFFLOADS_QUERY_CMD), |
| 277 | CMD(REMOTE_WAKE_CONFIG_CMD), |
| 278 | CMD(WOWLAN_PATTERNS), |
| 279 | CMD(WOWLAN_CONFIGURATION), |
| 280 | CMD(WOWLAN_TSC_RSC_PARAM), |
| 281 | CMD(WOWLAN_TKIP_PARAM), |
| 282 | CMD(WOWLAN_KEK_KCK_MATERIAL), |
| 283 | CMD(WOWLAN_GET_STATUSES), |
| 284 | CMD(WOWLAN_TX_POWER_PER_DB), |
| 285 | CMD(NET_DETECT_CONFIG_CMD), |
| 286 | CMD(NET_DETECT_PROFILES_QUERY_CMD), |
| 287 | CMD(NET_DETECT_PROFILES_CMD), |
| 288 | CMD(NET_DETECT_HOTSPOTS_CMD), |
| 289 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), |
Emmanuel Grumbach | 3b4612f | 2013-03-03 09:14:51 +0200 | [diff] [blame] | 290 | CMD(CARD_STATE_NOTIFICATION), |
Emmanuel Grumbach | fb3ceb8 | 2013-01-14 15:04:01 +0200 | [diff] [blame] | 291 | CMD(BT_COEX_PRIO_TABLE), |
| 292 | CMD(BT_COEX_PROT_ENV), |
| 293 | CMD(BT_PROFILE_NOTIFICATION), |
| 294 | CMD(BT_CONFIG), |
Hila Gonen | 7df15b1 | 2012-12-12 11:16:19 +0200 | [diff] [blame^] | 295 | CMD(REPLY_BEACON_FILTERING_CMD), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 296 | }; |
| 297 | #undef CMD |
| 298 | |
| 299 | /* this forward declaration can avoid to export the function */ |
| 300 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); |
| 301 | |
| 302 | static struct iwl_op_mode * |
| 303 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, |
| 304 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) |
| 305 | { |
| 306 | struct ieee80211_hw *hw; |
| 307 | struct iwl_op_mode *op_mode; |
| 308 | struct iwl_mvm *mvm; |
| 309 | struct iwl_trans_config trans_cfg = {}; |
| 310 | static const u8 no_reclaim_cmds[] = { |
| 311 | TX_CMD, |
| 312 | }; |
| 313 | int err, scan_size; |
| 314 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 315 | /******************************** |
| 316 | * 1. Allocating and configuring HW data |
| 317 | ********************************/ |
| 318 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + |
| 319 | sizeof(struct iwl_mvm), |
| 320 | &iwl_mvm_hw_ops); |
| 321 | if (!hw) |
| 322 | return NULL; |
| 323 | |
| 324 | op_mode = hw->priv; |
| 325 | op_mode->ops = &iwl_mvm_ops; |
| 326 | op_mode->trans = trans; |
| 327 | |
| 328 | mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 329 | mvm->dev = trans->dev; |
| 330 | mvm->trans = trans; |
| 331 | mvm->cfg = cfg; |
| 332 | mvm->fw = fw; |
| 333 | mvm->hw = hw; |
| 334 | |
| 335 | mutex_init(&mvm->mutex); |
| 336 | spin_lock_init(&mvm->async_handlers_lock); |
| 337 | INIT_LIST_HEAD(&mvm->time_event_list); |
| 338 | INIT_LIST_HEAD(&mvm->async_handlers_list); |
| 339 | spin_lock_init(&mvm->time_event_lock); |
| 340 | |
| 341 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); |
| 342 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); |
| 343 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); |
| 344 | |
| 345 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); |
| 346 | |
| 347 | /* |
| 348 | * Populate the state variables that the transport layer needs |
| 349 | * to know about. |
| 350 | */ |
| 351 | trans_cfg.op_mode = op_mode; |
| 352 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; |
| 353 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); |
| 354 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; |
| 355 | |
Emmanuel Grumbach | 25b9ea5 | 2013-03-06 11:53:38 +0200 | [diff] [blame] | 356 | 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] | 357 | trans_cfg.bc_table_dword = true; |
| 358 | |
| 359 | if (!iwlwifi_mod_params.wd_disable) |
| 360 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; |
| 361 | else |
| 362 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; |
| 363 | |
| 364 | trans_cfg.command_names = iwl_mvm_cmd_strings; |
| 365 | |
| 366 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; |
| 367 | trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO; |
| 368 | |
| 369 | snprintf(mvm->hw->wiphy->fw_version, |
| 370 | sizeof(mvm->hw->wiphy->fw_version), |
| 371 | "%s", fw->fw_version); |
| 372 | |
| 373 | /* Configure transport layer */ |
| 374 | iwl_trans_configure(mvm->trans, &trans_cfg); |
| 375 | |
| 376 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; |
| 377 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); |
| 378 | |
| 379 | /* set up notification wait support */ |
| 380 | iwl_notification_wait_init(&mvm->notif_wait); |
| 381 | |
| 382 | /* Init phy db */ |
| 383 | mvm->phy_db = iwl_phy_db_init(trans); |
| 384 | if (!mvm->phy_db) { |
| 385 | IWL_ERR(mvm, "Cannot init phy_db\n"); |
| 386 | goto out_free; |
| 387 | } |
| 388 | |
| 389 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", |
| 390 | mvm->cfg->name, mvm->trans->hw_rev); |
| 391 | |
| 392 | err = iwl_trans_start_hw(mvm->trans); |
| 393 | if (err) |
| 394 | goto out_free; |
| 395 | |
| 396 | mutex_lock(&mvm->mutex); |
| 397 | err = iwl_run_init_mvm_ucode(mvm, true); |
| 398 | mutex_unlock(&mvm->mutex); |
| 399 | if (err && !iwlmvm_mod_params.init_dbg) { |
| 400 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); |
| 401 | goto out_free; |
| 402 | } |
| 403 | |
| 404 | /* Stop the hw after the ALIVE and NVM has been read */ |
| 405 | if (!iwlmvm_mod_params.init_dbg) |
| 406 | iwl_trans_stop_hw(mvm->trans, false); |
| 407 | |
| 408 | scan_size = sizeof(struct iwl_scan_cmd) + |
| 409 | mvm->fw->ucode_capa.max_probe_length + |
| 410 | (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel)); |
| 411 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); |
| 412 | if (!mvm->scan_cmd) |
| 413 | goto out_free; |
| 414 | |
| 415 | err = iwl_mvm_mac_setup_register(mvm); |
| 416 | if (err) |
| 417 | goto out_free; |
| 418 | |
| 419 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); |
| 420 | if (err) |
| 421 | goto out_unregister; |
| 422 | |
| 423 | return op_mode; |
| 424 | |
| 425 | out_unregister: |
| 426 | ieee80211_unregister_hw(mvm->hw); |
| 427 | out_free: |
| 428 | iwl_phy_db_free(mvm->phy_db); |
| 429 | kfree(mvm->scan_cmd); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 430 | iwl_trans_stop_hw(trans, true); |
| 431 | ieee80211_free_hw(mvm->hw); |
| 432 | return NULL; |
| 433 | } |
| 434 | |
| 435 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) |
| 436 | { |
| 437 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 438 | int i; |
| 439 | |
| 440 | iwl_mvm_leds_exit(mvm); |
| 441 | |
| 442 | ieee80211_unregister_hw(mvm->hw); |
| 443 | |
| 444 | kfree(mvm->scan_cmd); |
| 445 | |
| 446 | iwl_trans_stop_hw(mvm->trans, true); |
| 447 | |
| 448 | iwl_phy_db_free(mvm->phy_db); |
| 449 | mvm->phy_db = NULL; |
| 450 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 451 | iwl_free_nvm_data(mvm->nvm_data); |
| 452 | for (i = 0; i < NVM_NUM_OF_SECTIONS; i++) |
| 453 | kfree(mvm->nvm_sections[i].data); |
| 454 | |
| 455 | ieee80211_free_hw(mvm->hw); |
| 456 | } |
| 457 | |
| 458 | struct iwl_async_handler_entry { |
| 459 | struct list_head list; |
| 460 | struct iwl_rx_cmd_buffer rxb; |
| 461 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, |
| 462 | struct iwl_device_cmd *cmd); |
| 463 | }; |
| 464 | |
| 465 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) |
| 466 | { |
| 467 | struct iwl_async_handler_entry *entry, *tmp; |
| 468 | |
| 469 | spin_lock_bh(&mvm->async_handlers_lock); |
| 470 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { |
| 471 | iwl_free_rxb(&entry->rxb); |
| 472 | list_del(&entry->list); |
| 473 | kfree(entry); |
| 474 | } |
| 475 | spin_unlock_bh(&mvm->async_handlers_lock); |
| 476 | } |
| 477 | |
| 478 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) |
| 479 | { |
| 480 | struct iwl_mvm *mvm = |
| 481 | container_of(wk, struct iwl_mvm, async_handlers_wk); |
| 482 | struct iwl_async_handler_entry *entry, *tmp; |
| 483 | struct list_head local_list; |
| 484 | |
| 485 | INIT_LIST_HEAD(&local_list); |
| 486 | |
| 487 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ |
| 488 | mutex_lock(&mvm->mutex); |
| 489 | |
| 490 | /* |
| 491 | * Sync with Rx path with a lock. Remove all the entries from this list, |
| 492 | * add them to a local one (lock free), and then handle them. |
| 493 | */ |
| 494 | spin_lock_bh(&mvm->async_handlers_lock); |
| 495 | list_splice_init(&mvm->async_handlers_list, &local_list); |
| 496 | spin_unlock_bh(&mvm->async_handlers_lock); |
| 497 | |
| 498 | list_for_each_entry_safe(entry, tmp, &local_list, list) { |
| 499 | if (entry->fn(mvm, &entry->rxb, NULL)) |
| 500 | IWL_WARN(mvm, |
| 501 | "returned value from ASYNC handlers are ignored\n"); |
| 502 | iwl_free_rxb(&entry->rxb); |
| 503 | list_del(&entry->list); |
| 504 | kfree(entry); |
| 505 | } |
| 506 | mutex_unlock(&mvm->mutex); |
| 507 | } |
| 508 | |
| 509 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, |
| 510 | struct iwl_rx_cmd_buffer *rxb, |
| 511 | struct iwl_device_cmd *cmd) |
| 512 | { |
| 513 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 514 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 515 | u8 i; |
| 516 | |
| 517 | /* |
| 518 | * Do the notification wait before RX handlers so |
| 519 | * even if the RX handler consumes the RXB we have |
| 520 | * access to it in the notification wait entry. |
| 521 | */ |
| 522 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); |
| 523 | |
| 524 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { |
| 525 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; |
Emmanuel Grumbach | 36eed56 | 2013-02-10 13:25:25 +0200 | [diff] [blame] | 526 | struct iwl_async_handler_entry *entry; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 527 | |
Emmanuel Grumbach | 36eed56 | 2013-02-10 13:25:25 +0200 | [diff] [blame] | 528 | if (rx_h->cmd_id != pkt->hdr.cmd) |
| 529 | continue; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 530 | |
Emmanuel Grumbach | 36eed56 | 2013-02-10 13:25:25 +0200 | [diff] [blame] | 531 | if (!rx_h->async) |
| 532 | return rx_h->fn(mvm, rxb, cmd); |
| 533 | |
| 534 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
| 535 | /* we can't do much... */ |
| 536 | if (!entry) |
| 537 | return 0; |
| 538 | |
| 539 | entry->rxb._page = rxb_steal_page(rxb); |
| 540 | entry->rxb._offset = rxb->_offset; |
| 541 | entry->rxb._rx_page_order = rxb->_rx_page_order; |
| 542 | entry->fn = rx_h->fn; |
| 543 | spin_lock(&mvm->async_handlers_lock); |
| 544 | list_add_tail(&entry->list, &mvm->async_handlers_list); |
| 545 | spin_unlock(&mvm->async_handlers_lock); |
| 546 | schedule_work(&mvm->async_handlers_wk); |
| 547 | break; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) |
| 554 | { |
| 555 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 556 | int mq = mvm->queue_to_mac80211[queue]; |
| 557 | |
| 558 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) |
| 559 | return; |
| 560 | |
| 561 | if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) { |
| 562 | IWL_DEBUG_TX_QUEUES(mvm, |
| 563 | "queue %d (mac80211 %d) already stopped\n", |
| 564 | queue, mq); |
| 565 | return; |
| 566 | } |
| 567 | |
| 568 | set_bit(mq, &mvm->transport_queue_stop); |
| 569 | ieee80211_stop_queue(mvm->hw, mq); |
| 570 | } |
| 571 | |
| 572 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) |
| 573 | { |
| 574 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 575 | int mq = mvm->queue_to_mac80211[queue]; |
| 576 | |
| 577 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) |
| 578 | return; |
| 579 | |
| 580 | if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) { |
| 581 | IWL_DEBUG_TX_QUEUES(mvm, |
| 582 | "queue %d (mac80211 %d) already awake\n", |
| 583 | queue, mq); |
| 584 | return; |
| 585 | } |
| 586 | |
| 587 | clear_bit(mq, &mvm->transport_queue_stop); |
| 588 | |
| 589 | ieee80211_wake_queue(mvm->hw, mq); |
| 590 | } |
| 591 | |
| 592 | static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) |
| 593 | { |
| 594 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 595 | |
| 596 | if (state) |
| 597 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); |
| 598 | else |
| 599 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); |
| 600 | |
| 601 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); |
| 602 | } |
| 603 | |
| 604 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) |
| 605 | { |
| 606 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 607 | struct ieee80211_tx_info *info; |
| 608 | |
| 609 | info = IEEE80211_SKB_CB(skb); |
| 610 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); |
| 611 | ieee80211_free_txskb(mvm->hw, skb); |
| 612 | } |
| 613 | |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 614 | static void iwl_mvm_nic_restart(struct iwl_mvm *mvm) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 615 | { |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 616 | iwl_abort_notification_waits(&mvm->notif_wait); |
| 617 | |
| 618 | /* |
| 619 | * If we're restarting already, don't cycle restarts. |
| 620 | * If INIT fw asserted, it will likely fail again. |
| 621 | * If WoWLAN fw asserted, don't restart either, mac80211 |
| 622 | * can't recover this since we're already half suspended. |
| 623 | */ |
| 624 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { |
| 625 | IWL_ERR(mvm, "Firmware error during reconfiguration! Abort.\n"); |
| 626 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && |
| 627 | iwlwifi_mod_params.restart_fw) { |
| 628 | /* |
| 629 | * This is a bit racy, but worst case we tell mac80211 about |
| 630 | * a stopped/aborted (sched) scan when that was already done |
| 631 | * which is not a problem. It is necessary to abort any scan |
| 632 | * here because mac80211 requires having the scan cleared |
| 633 | * before restarting. |
| 634 | * We'll reset the scan_status to NONE in restart cleanup in |
| 635 | * the next start() call from mac80211. |
| 636 | */ |
| 637 | switch (mvm->scan_status) { |
| 638 | case IWL_MVM_SCAN_NONE: |
| 639 | break; |
| 640 | case IWL_MVM_SCAN_OS: |
| 641 | ieee80211_scan_completed(mvm->hw, true); |
| 642 | break; |
| 643 | } |
| 644 | |
| 645 | ieee80211_restart_hw(mvm->hw); |
| 646 | } |
| 647 | } |
| 648 | |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 649 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) |
| 650 | { |
| 651 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 652 | |
| 653 | iwl_mvm_dump_nic_error_log(mvm); |
| 654 | |
| 655 | iwl_mvm_nic_restart(mvm); |
| 656 | } |
| 657 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 658 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) |
| 659 | { |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 660 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); |
| 661 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 662 | WARN_ON(1); |
Emmanuel Grumbach | 715c998 | 2013-02-28 08:57:31 +0200 | [diff] [blame] | 663 | iwl_mvm_nic_restart(mvm); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | static const struct iwl_op_mode_ops iwl_mvm_ops = { |
| 667 | .start = iwl_op_mode_mvm_start, |
| 668 | .stop = iwl_op_mode_mvm_stop, |
| 669 | .rx = iwl_mvm_rx_dispatch, |
| 670 | .queue_full = iwl_mvm_stop_sw_queue, |
| 671 | .queue_not_full = iwl_mvm_wake_sw_queue, |
| 672 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, |
| 673 | .free_skb = iwl_mvm_free_skb, |
| 674 | .nic_error = iwl_mvm_nic_error, |
| 675 | .cmd_queue_full = iwl_mvm_cmd_queue_full, |
| 676 | .nic_config = iwl_mvm_nic_config, |
| 677 | }; |