--- /dev/null
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ * Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+#include <net/mac80211.h>
+
+#include "iwl-notif-wait.h"
+#include "iwl-trans.h"
+#include "iwl-op-mode.h"
+#include "iwl-fw.h"
+#include "iwl-debug.h"
+#include "iwl-drv.h"
+#include "iwl-modparams.h"
+#include "mvm.h"
+#include "iwl-phy-db.h"
+#include "iwl-eeprom-parse.h"
+#include "iwl-csr.h"
+#include "iwl-io.h"
+#include "iwl-prph.h"
+#include "rs.h"
+#include "fw-api-scan.h"
+#include "time-event.h"
+
+#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
+MODULE_LICENSE("GPL");
+
+static const struct iwl_op_mode_ops iwl_mvm_ops;
+
+struct iwl_mvm_mod_params iwlmvm_mod_params = {
+ .power_scheme = IWL_POWER_SCHEME_BPS,
+ .tfd_q_hang_detect = true
+ /* rest of fields are 0 by default */
+};
+
+module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
+MODULE_PARM_DESC(init_dbg,
+ "set to true to debug an ASSERT in INIT fw (default: false");
+module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
+MODULE_PARM_DESC(power_scheme,
+ "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
+module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
+ bool, S_IRUGO);
+MODULE_PARM_DESC(tfd_q_hang_detect,
+ "TFD queues hang detection (default: true");
+
+/*
+ * module init and exit functions
+ */
+static int __init iwl_mvm_init(void)
+{
+ int ret;
+
+ ret = iwl_mvm_rate_control_register();
+ if (ret) {
+ pr_err("Unable to register rate control algorithm: %d\n", ret);
+ return ret;
+ }
+
+ ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
+
+ if (ret) {
+ pr_err("Unable to register MVM op_mode: %d\n", ret);
+ iwl_mvm_rate_control_unregister();
+ }
+
+ return ret;
+}
+module_init(iwl_mvm_init);
+
+static void __exit iwl_mvm_exit(void)
+{
+ iwl_opmode_deregister("iwlmvm");
+ iwl_mvm_rate_control_unregister();
+}
+module_exit(iwl_mvm_exit);
+
+static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
+ u32 reg_val = 0;
+ u32 phy_config = iwl_mvm_get_phy_config(mvm);
+
+ radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
+ FW_PHY_CFG_RADIO_TYPE_POS;
+ radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
+ FW_PHY_CFG_RADIO_STEP_POS;
+ radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
+ FW_PHY_CFG_RADIO_DASH_POS;
+
+ /* SKU control */
+ reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
+ CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
+ reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
+ CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
+
+ /* radio configuration */
+ reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
+ reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
+ reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
+
+ WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
+ ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
+
+ /*
+ * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
+ * shouldn't be set to any non-zero value. The same is supposed to be
+ * true of the other HW, but unsetting them (such as the 7260) causes
+ * automatic tests to fail on seemingly unrelated errors. Need to
+ * further investigate this, but for now we'll separate cases.
+ */
+ if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
+ reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
+
+ iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
+ CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
+ CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
+ CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
+ CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
+ CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
+ CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
+ reg_val);
+
+ IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
+ radio_cfg_step, radio_cfg_dash);
+
+ /*
+ * W/A : NIC is stuck in a reset state after Early PCIe power off
+ * (PCIe power is lost before PERST# is asserted), causing ME FW
+ * to lose ownership and not being able to obtain it back.
+ */
+ if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
+ iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
+ ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
+}
+
+struct iwl_rx_handlers {
+ u8 cmd_id;
+ bool async;
+ int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd);
+};
+
+#define RX_HANDLER(_cmd_id, _fn, _async) \
+ { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
+
+/*
+ * Handlers for fw notifications
+ * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
+ * This list should be in order of frequency for performance purposes.
+ *
+ * The handler can be SYNC - this means that it will be called in the Rx path
+ * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
+ * only in this case!), it should be set as ASYNC. In that case, it will be
+ * called from a worker with mvm->mutex held.
+ */
+static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
+ RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
+ RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
+ RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
+ RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
+
+ RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
+ RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true),
+ RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
+ RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
+ iwl_mvm_rx_ant_coupling_notif, true),
+
+ RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
+ RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true),
+
+ RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
+
+ RX_HANDLER(SCAN_ITERATION_COMPLETE,
+ iwl_mvm_rx_scan_offload_iter_complete_notif, false),
+ RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
+ iwl_mvm_rx_scan_offload_complete_notif, true),
+ RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results,
+ false),
+ RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
+ true),
+
+ RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
+ RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
+
+ RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
+ false),
+
+ RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
+ RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
+ iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
+ RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true),
+
+ RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
+ true),
+ RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false),
+
+};
+#undef RX_HANDLER
+#define CMD(x) [x] = #x
+
+static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
+ CMD(MVM_ALIVE),
+ CMD(REPLY_ERROR),
+ CMD(INIT_COMPLETE_NOTIF),
+ CMD(PHY_CONTEXT_CMD),
+ CMD(MGMT_MCAST_KEY),
+ CMD(TX_CMD),
+ CMD(TXPATH_FLUSH),
+ CMD(SHARED_MEM_CFG),
+ CMD(MAC_CONTEXT_CMD),
+ CMD(TIME_EVENT_CMD),
+ CMD(TIME_EVENT_NOTIFICATION),
+ CMD(BINDING_CONTEXT_CMD),
+ CMD(TIME_QUOTA_CMD),
+ CMD(NON_QOS_TX_COUNTER_CMD),
+ CMD(RADIO_VERSION_NOTIFICATION),
+ CMD(SCAN_REQUEST_CMD),
+ CMD(SCAN_ABORT_CMD),
+ CMD(SCAN_START_NOTIFICATION),
+ CMD(SCAN_RESULTS_NOTIFICATION),
+ CMD(SCAN_COMPLETE_NOTIFICATION),
+ CMD(NVM_ACCESS_CMD),
+ CMD(PHY_CONFIGURATION_CMD),
+ CMD(CALIB_RES_NOTIF_PHY_DB),
+ CMD(SET_CALIB_DEFAULT_CMD),
+ CMD(CALIBRATION_COMPLETE_NOTIFICATION),
+ CMD(ADD_STA_KEY),
+ CMD(ADD_STA),
+ CMD(REMOVE_STA),
+ CMD(LQ_CMD),
+ CMD(SCAN_OFFLOAD_CONFIG_CMD),
+ CMD(MATCH_FOUND_NOTIFICATION),
+ CMD(SCAN_OFFLOAD_REQUEST_CMD),
+ CMD(SCAN_OFFLOAD_ABORT_CMD),
+ CMD(HOT_SPOT_CMD),
+ CMD(SCAN_OFFLOAD_COMPLETE),
+ CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
+ CMD(SCAN_ITERATION_COMPLETE),
+ CMD(POWER_TABLE_CMD),
+ CMD(WEP_KEY),
+ CMD(REPLY_RX_PHY_CMD),
+ CMD(REPLY_RX_MPDU_CMD),
+ CMD(BEACON_NOTIFICATION),
+ CMD(BEACON_TEMPLATE_CMD),
+ CMD(STATISTICS_CMD),
+ CMD(STATISTICS_NOTIFICATION),
+ CMD(EOSP_NOTIFICATION),
+ CMD(REDUCE_TX_POWER_CMD),
+ CMD(TX_ANT_CONFIGURATION_CMD),
+ CMD(D3_CONFIG_CMD),
+ CMD(D0I3_END_CMD),
+ CMD(PROT_OFFLOAD_CONFIG_CMD),
+ CMD(OFFLOADS_QUERY_CMD),
+ CMD(REMOTE_WAKE_CONFIG_CMD),
+ CMD(WOWLAN_PATTERNS),
+ CMD(WOWLAN_CONFIGURATION),
+ CMD(WOWLAN_TSC_RSC_PARAM),
+ CMD(WOWLAN_TKIP_PARAM),
+ CMD(WOWLAN_KEK_KCK_MATERIAL),
+ CMD(WOWLAN_GET_STATUSES),
+ CMD(WOWLAN_TX_POWER_PER_DB),
+ CMD(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
+ CMD(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
+ CMD(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
+ CMD(CARD_STATE_NOTIFICATION),
+ CMD(MISSED_BEACONS_NOTIFICATION),
+ CMD(BT_COEX_PRIO_TABLE),
+ CMD(BT_COEX_PROT_ENV),
+ CMD(BT_PROFILE_NOTIFICATION),
+ CMD(BT_CONFIG),
+ CMD(MCAST_FILTER_CMD),
+ CMD(BCAST_FILTER_CMD),
+ CMD(REPLY_SF_CFG_CMD),
+ CMD(REPLY_BEACON_FILTERING_CMD),
+ CMD(CMD_DTS_MEASUREMENT_TRIGGER),
+ CMD(DTS_MEASUREMENT_NOTIFICATION),
+ CMD(REPLY_THERMAL_MNG_BACKOFF),
+ CMD(MAC_PM_POWER_TABLE),
+ CMD(LTR_CONFIG),
+ CMD(BT_COEX_CI),
+ CMD(BT_COEX_UPDATE_SW_BOOST),
+ CMD(BT_COEX_UPDATE_CORUN_LUT),
+ CMD(BT_COEX_UPDATE_REDUCED_TXP),
+ CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
+ CMD(ANTENNA_COUPLING_NOTIFICATION),
+ CMD(SCD_QUEUE_CFG),
+ CMD(SCAN_CFG_CMD),
+ CMD(SCAN_REQ_UMAC),
+ CMD(SCAN_ABORT_UMAC),
+ CMD(SCAN_COMPLETE_UMAC),
+ CMD(TDLS_CHANNEL_SWITCH_CMD),
+ CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION),
+ CMD(TDLS_CONFIG_CMD),
+ CMD(MCC_UPDATE_CMD),
+};
+#undef CMD
+
+/* this forward declaration can avoid to export the function */
+static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
+static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
+
+static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
+{
+ const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
+
+ if (!pwr_tx_backoff)
+ return 0;
+
+ while (pwr_tx_backoff->pwr) {
+ if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
+ return pwr_tx_backoff->backoff;
+
+ pwr_tx_backoff++;
+ }
+
+ return 0;
+}
+
+static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
+
+static struct iwl_op_mode *
+iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
+ const struct iwl_fw *fw, struct dentry *dbgfs_dir)
+{
+ struct ieee80211_hw *hw;
+ struct iwl_op_mode *op_mode;
+ struct iwl_mvm *mvm;
+ struct iwl_trans_config trans_cfg = {};
+ static const u8 no_reclaim_cmds[] = {
+ TX_CMD,
+ };
+ int err, scan_size;
+ u32 min_backoff;
+
+ /*
+ * We use IWL_MVM_STATION_COUNT to check the validity of the station
+ * index all over the driver - check that its value corresponds to the
+ * array size.
+ */
+ BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
+
+ /********************************
+ * 1. Allocating and configuring HW data
+ ********************************/
+ hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
+ sizeof(struct iwl_mvm),
+ &iwl_mvm_hw_ops);
+ if (!hw)
+ return NULL;
+
+ if (cfg->max_rx_agg_size)
+ hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
+
+ if (cfg->max_tx_agg_size)
+ hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
+
+ op_mode = hw->priv;
+ op_mode->ops = &iwl_mvm_ops;
+
+ mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ mvm->dev = trans->dev;
+ mvm->trans = trans;
+ mvm->cfg = cfg;
+ mvm->fw = fw;
+ mvm->hw = hw;
+
+ mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
+
+ mvm->aux_queue = 15;
+ mvm->first_agg_queue = 16;
+ mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
+ if (mvm->cfg->base_params->num_of_queues == 16) {
+ mvm->aux_queue = 11;
+ mvm->first_agg_queue = 12;
+ }
+ mvm->sf_state = SF_UNINIT;
+ mvm->low_latency_agg_frame_limit = 6;
+ mvm->cur_ucode = IWL_UCODE_INIT;
+
+ mutex_init(&mvm->mutex);
+ mutex_init(&mvm->d0i3_suspend_mutex);
+ spin_lock_init(&mvm->async_handlers_lock);
+ INIT_LIST_HEAD(&mvm->time_event_list);
+ INIT_LIST_HEAD(&mvm->aux_roc_te_list);
+ INIT_LIST_HEAD(&mvm->async_handlers_list);
+ spin_lock_init(&mvm->time_event_lock);
+
+ INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
+ INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
+ INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
+ INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
+ INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
+ INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
+
+ spin_lock_init(&mvm->d0i3_tx_lock);
+ spin_lock_init(&mvm->refs_lock);
+ skb_queue_head_init(&mvm->d0i3_tx);
+ init_waitqueue_head(&mvm->d0i3_exit_waitq);
+
+ SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
+
+ /*
+ * Populate the state variables that the transport layer needs
+ * to know about.
+ */
+ trans_cfg.op_mode = op_mode;
+ trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
+ trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
+ trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
+
+ if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
+ trans_cfg.bc_table_dword = true;
+
+ trans_cfg.command_names = iwl_mvm_cmd_strings;
+
+ trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
+ trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
+ trans_cfg.scd_set_active = true;
+
+ trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
+
+ /* Set a short watchdog for the command queue */
+ trans_cfg.cmd_q_wdg_timeout =
+ iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
+
+ snprintf(mvm->hw->wiphy->fw_version,
+ sizeof(mvm->hw->wiphy->fw_version),
+ "%s", fw->fw_version);
+
+ /* Configure transport layer */
+ iwl_trans_configure(mvm->trans, &trans_cfg);
+
+ trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
+ trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
+ trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
+ trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
+ memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
+ sizeof(trans->dbg_conf_tlv));
+ trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
+
+ /* set up notification wait support */
+ iwl_notification_wait_init(&mvm->notif_wait);
+
+ /* Init phy db */
+ mvm->phy_db = iwl_phy_db_init(trans);
+ if (!mvm->phy_db) {
+ IWL_ERR(mvm, "Cannot init phy_db\n");
+ goto out_free;
+ }
+
+ IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
+ mvm->cfg->name, mvm->trans->hw_rev);
+
+ min_backoff = calc_min_backoff(trans, cfg);
+ iwl_mvm_tt_initialize(mvm, min_backoff);
+ /* set the nvm_file_name according to priority */
+ if (iwlwifi_mod_params.nvm_file) {
+ mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
+ } else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
+ if (CSR_HW_REV_STEP(trans->hw_rev) == SILICON_B_STEP)
+ mvm->nvm_file_name = mvm->cfg->default_nvm_file_B_step;
+ else
+ mvm->nvm_file_name = mvm->cfg->default_nvm_file_C_step;
+ }
+
+ if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
+ "not allowing power-up and not having nvm_file\n"))
+ goto out_free;
+
+ /*
+ * Even if nvm exists in the nvm_file driver should read again the nvm
+ * from the nic because there might be entries that exist in the OTP
+ * and not in the file.
+ * for nics with no_power_up_nic_in_init: rely completley on nvm_file
+ */
+ if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
+ err = iwl_nvm_init(mvm, false);
+ if (err)
+ goto out_free;
+ } else {
+ err = iwl_trans_start_hw(mvm->trans);
+ if (err)
+ goto out_free;
+
+ mutex_lock(&mvm->mutex);
+ err = iwl_run_init_mvm_ucode(mvm, true);
+ if (!err || !iwlmvm_mod_params.init_dbg)
+ iwl_trans_stop_device(trans);
+ mutex_unlock(&mvm->mutex);
+ /* returns 0 if successful, 1 if success but in rfkill */
+ if (err < 0 && !iwlmvm_mod_params.init_dbg) {
+ IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
+ goto out_free;
+ }
+ }
+
+ scan_size = iwl_mvm_scan_size(mvm);
+
+ mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
+ if (!mvm->scan_cmd)
+ goto out_free;
+
+ /* Set EBS as successful as long as not stated otherwise by the FW. */
+ mvm->last_ebs_successful = true;
+
+ err = iwl_mvm_mac_setup_register(mvm);
+ if (err)
+ goto out_free;
+
+ err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
+ if (err)
+ goto out_unregister;
+
+ memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
+
+ /* rpm starts with a taken ref. only set the appropriate bit here. */
+ mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1;
+
+ return op_mode;
+
+ out_unregister:
+ ieee80211_unregister_hw(mvm->hw);
+ iwl_mvm_leds_exit(mvm);
+ out_free:
+ iwl_phy_db_free(mvm->phy_db);
+ kfree(mvm->scan_cmd);
+ if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
+ iwl_trans_op_mode_leave(trans);
+ ieee80211_free_hw(mvm->hw);
+ return NULL;
+}
+
+static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ int i;
+
+ iwl_mvm_leds_exit(mvm);
+
+ iwl_mvm_tt_exit(mvm);
+
+ ieee80211_unregister_hw(mvm->hw);
+
+ kfree(mvm->scan_cmd);
+ kfree(mvm->mcast_filter_cmd);
+ mvm->mcast_filter_cmd = NULL;
+
+#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
+ kfree(mvm->d3_resume_sram);
+ if (mvm->nd_config) {
+ kfree(mvm->nd_config->match_sets);
+ kfree(mvm->nd_config);
+ mvm->nd_config = NULL;
+ }
+#endif
+
+ iwl_trans_op_mode_leave(mvm->trans);
+
+ iwl_phy_db_free(mvm->phy_db);
+ mvm->phy_db = NULL;
+
+ iwl_free_nvm_data(mvm->nvm_data);
+ for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
+ kfree(mvm->nvm_sections[i].data);
+
+ ieee80211_free_hw(mvm->hw);
+}
+
+struct iwl_async_handler_entry {
+ struct list_head list;
+ struct iwl_rx_cmd_buffer rxb;
+ int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd);
+};
+
+void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
+{
+ struct iwl_async_handler_entry *entry, *tmp;
+
+ spin_lock_bh(&mvm->async_handlers_lock);
+ list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
+ iwl_free_rxb(&entry->rxb);
+ list_del(&entry->list);
+ kfree(entry);
+ }
+ spin_unlock_bh(&mvm->async_handlers_lock);
+}
+
+static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
+{
+ struct iwl_mvm *mvm =
+ container_of(wk, struct iwl_mvm, async_handlers_wk);
+ struct iwl_async_handler_entry *entry, *tmp;
+ struct list_head local_list;
+
+ INIT_LIST_HEAD(&local_list);
+
+ /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
+ mutex_lock(&mvm->mutex);
+
+ /*
+ * Sync with Rx path with a lock. Remove all the entries from this list,
+ * add them to a local one (lock free), and then handle them.
+ */
+ spin_lock_bh(&mvm->async_handlers_lock);
+ list_splice_init(&mvm->async_handlers_list, &local_list);
+ spin_unlock_bh(&mvm->async_handlers_lock);
+
+ list_for_each_entry_safe(entry, tmp, &local_list, list) {
+ if (entry->fn(mvm, &entry->rxb, NULL))
+ IWL_WARN(mvm,
+ "returned value from ASYNC handlers are ignored\n");
+ iwl_free_rxb(&entry->rxb);
+ list_del(&entry->list);
+ kfree(entry);
+ }
+ mutex_unlock(&mvm->mutex);
+}
+
+static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
+ struct iwl_rx_packet *pkt)
+{
+ struct iwl_fw_dbg_trigger_tlv *trig;
+ struct iwl_fw_dbg_trigger_cmd *cmds_trig;
+ int i;
+
+ if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
+ return;
+
+ trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
+ cmds_trig = (void *)trig->data;
+
+ if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
+ /* don't collect on CMD 0 */
+ if (!cmds_trig->cmds[i].cmd_id)
+ break;
+
+ if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd)
+ continue;
+
+ iwl_mvm_fw_dbg_collect_trig(mvm, trig,
+ "CMD 0x%02x received",
+ pkt->hdr.cmd);
+ break;
+ }
+}
+
+static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
+ struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ u8 i;
+
+ iwl_mvm_rx_check_trigger(mvm, pkt);
+
+ /*
+ * Do the notification wait before RX handlers so
+ * even if the RX handler consumes the RXB we have
+ * access to it in the notification wait entry.
+ */
+ iwl_notification_wait_notify(&mvm->notif_wait, pkt);
+
+ for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
+ const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
+ struct iwl_async_handler_entry *entry;
+
+ if (rx_h->cmd_id != pkt->hdr.cmd)
+ continue;
+
+ if (!rx_h->async)
+ return rx_h->fn(mvm, rxb, cmd);
+
+ entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
+ /* we can't do much... */
+ if (!entry)
+ return 0;
+
+ entry->rxb._page = rxb_steal_page(rxb);
+ entry->rxb._offset = rxb->_offset;
+ entry->rxb._rx_page_order = rxb->_rx_page_order;
+ entry->fn = rx_h->fn;
+ spin_lock(&mvm->async_handlers_lock);
+ list_add_tail(&entry->list, &mvm->async_handlers_list);
+ spin_unlock(&mvm->async_handlers_lock);
+ schedule_work(&mvm->async_handlers_wk);
+ break;
+ }
+
+ return 0;
+}
+
+static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ int mq = mvm->queue_to_mac80211[queue];
+
+ if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
+ return;
+
+ if (atomic_inc_return(&mvm->mac80211_queue_stop_count[mq]) > 1) {
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "queue %d (mac80211 %d) already stopped\n",
+ queue, mq);
+ return;
+ }
+
+ ieee80211_stop_queue(mvm->hw, mq);
+}
+
+static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ int mq = mvm->queue_to_mac80211[queue];
+
+ if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
+ return;
+
+ if (atomic_dec_return(&mvm->mac80211_queue_stop_count[mq]) > 0) {
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "queue %d (mac80211 %d) still stopped\n",
+ queue, mq);
+ return;
+ }
+
+ ieee80211_wake_queue(mvm->hw, mq);
+}
+
+void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
+{
+ if (state)
+ set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
+ else
+ clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
+
+ wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
+}
+
+static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ bool calibrating = ACCESS_ONCE(mvm->calibrating);
+
+ if (state)
+ set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
+ else
+ clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
+
+ wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
+
+ /* iwl_run_init_mvm_ucode is waiting for results, abort it */
+ if (calibrating)
+ iwl_abort_notification_waits(&mvm->notif_wait);
+
+ /*
+ * Stop the device if we run OPERATIONAL firmware or if we are in the
+ * middle of the calibrations.
+ */
+ return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
+}
+
+static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ struct ieee80211_tx_info *info;
+
+ info = IEEE80211_SKB_CB(skb);
+ iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
+ ieee80211_free_txskb(mvm->hw, skb);
+}
+
+struct iwl_mvm_reprobe {
+ struct device *dev;
+ struct work_struct work;
+};
+
+static void iwl_mvm_reprobe_wk(struct work_struct *wk)
+{
+ struct iwl_mvm_reprobe *reprobe;
+
+ reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
+ if (device_reprobe(reprobe->dev))
+ dev_err(reprobe->dev, "reprobe failed!\n");
+ kfree(reprobe);
+ module_put(THIS_MODULE);
+}
+
+static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
+{
+ struct iwl_mvm *mvm =
+ container_of(work, struct iwl_mvm, fw_dump_wk.work);
+
+ if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
+ return;
+
+ mutex_lock(&mvm->mutex);
+
+ /* stop recording */
+ if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
+ iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
+ } else {
+ iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
+ /* wait before we collect the data till the DBGC stop */
+ udelay(100);
+ }
+
+ iwl_mvm_fw_error_dump(mvm);
+
+ /* start recording again if the firmware is not crashed */
+ WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
+ mvm->fw->dbg_dest_tlv &&
+ iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
+
+ mutex_unlock(&mvm->mutex);
+
+ iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
+}
+
+void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
+{
+ iwl_abort_notification_waits(&mvm->notif_wait);
+
+ /*
+ * This is a bit racy, but worst case we tell mac80211 about
+ * a stopped/aborted scan when that was already done which
+ * is not a problem. It is necessary to abort any os scan
+ * here because mac80211 requires having the scan cleared
+ * before restarting.
+ * We'll reset the scan_status to NONE in restart cleanup in
+ * the next start() call from mac80211. If restart isn't called
+ * (no fw restart) scan status will stay busy.
+ */
+ iwl_mvm_report_scan_aborted(mvm);
+
+ /*
+ * If we're restarting already, don't cycle restarts.
+ * If INIT fw asserted, it will likely fail again.
+ * If WoWLAN fw asserted, don't restart either, mac80211
+ * can't recover this since we're already half suspended.
+ */
+ if (!mvm->restart_fw && fw_error) {
+ iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 0);
+ } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
+ &mvm->status)) {
+ struct iwl_mvm_reprobe *reprobe;
+
+ IWL_ERR(mvm,
+ "Firmware error during reconfiguration - reprobe!\n");
+
+ /*
+ * get a module reference to avoid doing this while unloading
+ * anyway and to avoid scheduling a work with code that's
+ * being removed.
+ */
+ if (!try_module_get(THIS_MODULE)) {
+ IWL_ERR(mvm, "Module is being unloaded - abort\n");
+ return;
+ }
+
+ reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
+ if (!reprobe) {
+ module_put(THIS_MODULE);
+ return;
+ }
+ reprobe->dev = mvm->trans->dev;
+ INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
+ schedule_work(&reprobe->work);
+ } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
+ /* don't let the transport/FW power down */
+ iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
+
+ if (fw_error && mvm->restart_fw > 0)
+ mvm->restart_fw--;
+ ieee80211_restart_hw(mvm->hw);
+ }
+}
+
+static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+
+ iwl_mvm_dump_nic_error_log(mvm);
+
+ iwl_mvm_nic_restart(mvm, true);
+}
+
+static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+
+ WARN_ON(1);
+ iwl_mvm_nic_restart(mvm, true);
+}
+
+struct iwl_d0i3_iter_data {
+ struct iwl_mvm *mvm;
+ u8 ap_sta_id;
+ u8 vif_count;
+ u8 offloading_tid;
+ bool disable_offloading;
+};
+
+static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct iwl_d0i3_iter_data *iter_data)
+{
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+ struct ieee80211_sta *ap_sta;
+ struct iwl_mvm_sta *mvmsta;
+ u32 available_tids = 0;
+ u8 tid;
+
+ if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
+ mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
+ return false;
+
+ ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
+ if (IS_ERR_OR_NULL(ap_sta))
+ return false;
+
+ mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
+ spin_lock_bh(&mvmsta->lock);
+ for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
+ struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
+
+ /*
+ * in case of pending tx packets, don't use this tid
+ * for offloading in order to prevent reuse of the same
+ * qos seq counters.
+ */
+ if (iwl_mvm_tid_queued(tid_data))
+ continue;
+
+ if (tid_data->state != IWL_AGG_OFF)
+ continue;
+
+ available_tids |= BIT(tid);
+ }
+ spin_unlock_bh(&mvmsta->lock);
+
+ /*
+ * disallow protocol offloading if we have no available tid
+ * (with no pending frames and no active aggregation,
+ * as we don't handle "holes" properly - the scheduler needs the
+ * frame's seq number and TFD index to match)
+ */
+ if (!available_tids)
+ return true;
+
+ /* for simplicity, just use the first available tid */
+ iter_data->offloading_tid = ffs(available_tids) - 1;
+ return false;
+}
+
+static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct iwl_d0i3_iter_data *data = _data;
+ struct iwl_mvm *mvm = data->mvm;
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+ u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
+
+ IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
+ if (vif->type != NL80211_IFTYPE_STATION ||
+ !vif->bss_conf.assoc)
+ return;
+
+ /*
+ * in case of pending tx packets or active aggregations,
+ * avoid offloading features in order to prevent reuse of
+ * the same qos seq counters.
+ */
+ if (iwl_mvm_disallow_offloading(mvm, vif, data))
+ data->disable_offloading = true;
+
+ iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
+ iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags);
+
+ /*
+ * on init/association, mvm already configures POWER_TABLE_CMD
+ * and REPLY_MCAST_FILTER_CMD, so currently don't
+ * reconfigure them (we might want to use different
+ * params later on, though).
+ */
+ data->ap_sta_id = mvmvif->ap_sta_id;
+ data->vif_count++;
+}
+
+static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
+ struct iwl_wowlan_config_cmd *cmd,
+ struct iwl_d0i3_iter_data *iter_data)
+{
+ struct ieee80211_sta *ap_sta;
+ struct iwl_mvm_sta *mvm_ap_sta;
+
+ if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
+ return;
+
+ rcu_read_lock();
+
+ ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
+ if (IS_ERR_OR_NULL(ap_sta))
+ goto out;
+
+ mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
+ cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
+ cmd->offloading_tid = iter_data->offloading_tid;
+
+ /*
+ * The d0i3 uCode takes care of the nonqos counters,
+ * so configure only the qos seq ones.
+ */
+ iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
+out:
+ rcu_read_unlock();
+}
+
+int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+ u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
+ int ret;
+ struct iwl_d0i3_iter_data d0i3_iter_data = {
+ .mvm = mvm,
+ };
+ struct iwl_wowlan_config_cmd wowlan_config_cmd = {
+ .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
+ IWL_WOWLAN_WAKEUP_BEACON_MISS |
+ IWL_WOWLAN_WAKEUP_LINK_CHANGE |
+ IWL_WOWLAN_WAKEUP_BCN_FILTERING),
+ };
+ struct iwl_d3_manager_config d3_cfg_cmd = {
+ .min_sleep_time = cpu_to_le32(1000),
+ .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
+ };
+
+ IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
+
+ /* make sure we have no running tx while configuring the qos */
+ set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
+ synchronize_net();
+
+ /*
+ * iwl_mvm_ref_sync takes a reference before checking the flag.
+ * so by checking there is no held reference we prevent a state
+ * in which iwl_mvm_ref_sync continues successfully while we
+ * configure the firmware to enter d0i3
+ */
+ if (iwl_mvm_ref_taken(mvm)) {
+ IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
+ clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
+ wake_up(&mvm->d0i3_exit_waitq);
+ return 1;
+ }
+
+ ieee80211_iterate_active_interfaces_atomic(mvm->hw,
+ IEEE80211_IFACE_ITER_NORMAL,
+ iwl_mvm_enter_d0i3_iterator,
+ &d0i3_iter_data);
+ if (d0i3_iter_data.vif_count == 1) {
+ mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
+ mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
+ } else {
+ WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
+ mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
+ mvm->d0i3_offloading = false;
+ }
+
+ iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data);
+ ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
+ sizeof(wowlan_config_cmd),
+ &wowlan_config_cmd);
+ if (ret)
+ return ret;
+
+ return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
+ flags | CMD_MAKE_TRANS_IDLE,
+ sizeof(d3_cfg_cmd), &d3_cfg_cmd);
+}
+
+static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct iwl_mvm *mvm = _data;
+ u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
+
+ IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
+ if (vif->type != NL80211_IFTYPE_STATION ||
+ !vif->bss_conf.assoc)
+ return;
+
+ iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
+}
+
+static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct iwl_mvm *mvm = data;
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+ if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
+ mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
+ iwl_mvm_connection_loss(mvm, vif, "D0i3");
+}
+
+void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
+{
+ struct ieee80211_sta *sta = NULL;
+ struct iwl_mvm_sta *mvm_ap_sta;
+ int i;
+ bool wake_queues = false;
+
+ lockdep_assert_held(&mvm->mutex);
+
+ spin_lock_bh(&mvm->d0i3_tx_lock);
+
+ if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
+ goto out;
+
+ IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
+
+ /* get the sta in order to update seq numbers and re-enqueue skbs */
+ sta = rcu_dereference_protected(
+ mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
+ lockdep_is_held(&mvm->mutex));
+
+ if (IS_ERR_OR_NULL(sta)) {
+ sta = NULL;
+ goto out;
+ }
+
+ if (mvm->d0i3_offloading && qos_seq) {
+ /* update qos seq numbers if offloading was enabled */
+ mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
+ for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
+ u16 seq = le16_to_cpu(qos_seq[i]);
+ /* firmware stores last-used one, we store next one */
+ seq += 0x10;
+ mvm_ap_sta->tid_data[i].seq_number = seq;
+ }
+ }
+out:
+ /* re-enqueue (or drop) all packets */
+ while (!skb_queue_empty(&mvm->d0i3_tx)) {
+ struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
+
+ if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
+ ieee80211_free_txskb(mvm->hw, skb);
+
+ /* if the skb_queue is not empty, we need to wake queues */
+ wake_queues = true;
+ }
+ clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
+ wake_up(&mvm->d0i3_exit_waitq);
+ mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
+ if (wake_queues)
+ ieee80211_wake_queues(mvm->hw);
+
+ spin_unlock_bh(&mvm->d0i3_tx_lock);
+}
+
+static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
+{
+ struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
+ struct iwl_host_cmd get_status_cmd = {
+ .id = WOWLAN_GET_STATUSES,
+ .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
+ };
+ struct iwl_wowlan_status *status;
+ int ret;
+ u32 disconnection_reasons, wakeup_reasons;
+ __le16 *qos_seq = NULL;
+
+ mutex_lock(&mvm->mutex);
+ ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
+ if (ret)
+ goto out;
+
+ if (!get_status_cmd.resp_pkt)
+ goto out;
+
+ status = (void *)get_status_cmd.resp_pkt->data;
+ wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
+ qos_seq = status->qos_seq_ctr;
+
+ IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
+
+ disconnection_reasons =
+ IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
+ IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
+ if (wakeup_reasons & disconnection_reasons)
+ ieee80211_iterate_active_interfaces(
+ mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+ iwl_mvm_d0i3_disconnect_iter, mvm);
+out:
+ iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
+
+ /* qos_seq might point inside resp_pkt, so free it only now */
+ if (get_status_cmd.resp_pkt)
+ iwl_free_resp(&get_status_cmd);
+
+ /* the FW might have updated the regdomain */
+ iwl_mvm_update_changed_regdom(mvm);
+
+ iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
+ mutex_unlock(&mvm->mutex);
+}
+
+int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
+{
+ u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
+ CMD_WAKE_UP_TRANS;
+ int ret;
+
+ IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
+
+ mutex_lock(&mvm->d0i3_suspend_mutex);
+ if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
+ IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
+ __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
+ mutex_unlock(&mvm->d0i3_suspend_mutex);
+ return 0;
+ }
+ mutex_unlock(&mvm->d0i3_suspend_mutex);
+
+ ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
+ if (ret)
+ goto out;
+
+ ieee80211_iterate_active_interfaces_atomic(mvm->hw,
+ IEEE80211_IFACE_ITER_NORMAL,
+ iwl_mvm_exit_d0i3_iterator,
+ mvm);
+out:
+ schedule_work(&mvm->d0i3_exit_work);
+ return ret;
+}
+
+int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+
+ iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
+ return _iwl_mvm_exit_d0i3(mvm);
+}
+
+static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode,
+ struct napi_struct *napi,
+ struct net_device *napi_dev,
+ int (*poll)(struct napi_struct *, int),
+ int weight)
+{
+ struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
+
+ ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight);
+}
+
+static const struct iwl_op_mode_ops iwl_mvm_ops = {
+ .start = iwl_op_mode_mvm_start,
+ .stop = iwl_op_mode_mvm_stop,
+ .rx = iwl_mvm_rx_dispatch,
+ .queue_full = iwl_mvm_stop_sw_queue,
+ .queue_not_full = iwl_mvm_wake_sw_queue,
+ .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
+ .free_skb = iwl_mvm_free_skb,
+ .nic_error = iwl_mvm_nic_error,
+ .cmd_queue_full = iwl_mvm_cmd_queue_full,
+ .nic_config = iwl_mvm_nic_config,
+ .enter_d0i3 = iwl_mvm_enter_d0i3,
+ .exit_d0i3 = iwl_mvm_exit_d0i3,
+ .napi_add = iwl_mvm_napi_add,
+};
Code Review / kvmfornfv.git / blobdiff