return ret;
}
-static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
-{
- struct iwl_notification_wait wait_d3;
- static const u16 d3_notif[] = { D3_CONFIG_CMD };
- int ret;
-
- iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
- d3_notif, ARRAY_SIZE(d3_notif),
- NULL, NULL);
-
- ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
- if (ret)
- goto remove_notif;
-
- ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
- WARN_ON_ONCE(ret);
- return ret;
-
-remove_notif:
- iwl_remove_notification(&mvm->notif_wait, &wait_d3);
- return ret;
-}
-
int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_trans *trans = mvm->trans;
int ret;
- /* make sure the d0i3 exit work is not pending */
- flush_work(&mvm->d0i3_exit_work);
iwl_mvm_pause_tcm(mvm, true);
iwl_fw_runtime_suspend(&mvm->fwrt);
if (ret)
return ret;
- if (wowlan->any) {
- trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
-
- if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
- ret = iwl_mvm_enter_d0i3_sync(mvm);
-
- if (ret)
- return ret;
- }
-
- mutex_lock(&mvm->d0i3_suspend_mutex);
- __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
- mutex_unlock(&mvm->d0i3_suspend_mutex);
-
- iwl_trans_d3_suspend(trans, false, false);
-
- return 0;
- }
-
trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
return __iwl_mvm_suspend(hw, wowlan, false);
return false;
}
-void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_wowlan_status *status)
-{
- struct iwl_mvm_d3_gtk_iter_data gtkdata = {
- .mvm = mvm,
- .status = status,
- };
-
- /*
- * rekey handling requires taking locks that can't be taken now.
- * however, d0i3 doesn't offload rekey, so we're fine.
- */
- if (WARN_ON_ONCE(status->num_of_gtk_rekeys))
- return;
-
- /* find last GTK that we used initially, if any */
- gtkdata.find_phase = true;
- iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, >kdata);
-
- gtkdata.find_phase = false;
- iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, >kdata);
-}
-
#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
IWL_SCAN_MAX_PROFILES)
return __iwl_mvm_resume(mvm, false);
}
-static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
-{
- bool exit_now;
- enum iwl_d3_status d3_status;
- struct iwl_trans *trans = mvm->trans;
-
- iwl_trans_d3_resume(trans, &d3_status, false, false);
-
- /*
- * make sure to clear D0I3_DEFER_WAKEUP before
- * calling iwl_trans_resume(), which might wait
- * for d0i3 exit completion.
- */
- mutex_lock(&mvm->d0i3_suspend_mutex);
- __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
- exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
- &mvm->d0i3_suspend_flags);
- mutex_unlock(&mvm->d0i3_suspend_mutex);
- if (exit_now) {
- IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
- _iwl_mvm_exit_d0i3(mvm);
- }
-
- iwl_trans_resume(trans);
-
- if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
- int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
-
- if (ret)
- return ret;
- /*
- * d0i3 exit will be deferred until reconfig_complete.
- * make sure there we are out of d0i3.
- */
- }
- return 0;
-}
-
int iwl_mvm_resume(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
- if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)
- ret = iwl_mvm_resume_d0i3(mvm);
- else
- ret = iwl_mvm_resume_d3(mvm);
+ ret = iwl_mvm_resume_d3(mvm);
mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
-#ifdef CONFIG_PM
-static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
-#endif
static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
{
mvm->drop_bcn_ap_mode = true;
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_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
-#ifdef CONFIG_PM
- INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
-#endif
INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
INIT_LIST_HEAD(&mvm->add_stream_txqs);
- init_waitqueue_head(&mvm->d0i3_exit_waitq);
init_waitqueue_head(&mvm->rx_sync_waitq);
atomic_set(&mvm->queue_sync_counter, 0);
iwl_fw_runtime_free(&mvm->fwrt);
mutex_destroy(&mvm->mutex);
- mutex_destroy(&mvm->d0i3_suspend_mutex);
ieee80211_free_hw(mvm->hw);
}
iwl_mvm_nic_restart(mvm, true);
}
-#ifdef CONFIG_PM
-struct iwl_d0i3_iter_data {
- struct iwl_mvm *mvm;
- struct ieee80211_vif *connected_vif;
- 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 iwl_mvm_sta *mvmsta;
- u32 available_tids = 0;
- u8 tid;
-
- if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
- mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
- return false;
-
- mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
- if (!mvmsta)
- return false;
-
- 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(mvm, 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,
- false, 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++;
-
- /*
- * no new commands can be sent at this stage, so it's safe
- * to save the vif pointer during d0i3 entrance.
- */
- data->connected_vif = vif;
-}
-
-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_INVALID_STA)
- 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;
- cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
- ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
- /*
- * 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),
- };
- 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");
-
- if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
- return -EINVAL;
-
- set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
-
- 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_INVALID_STA;
- mvm->d0i3_offloading = false;
- }
-
- iwl_mvm_pause_tcm(mvm, true);
- /* make sure we have no running tx while configuring the seqno */
- synchronize_net();
-
- /* Flush the hw queues, in case something got queued during entry */
- /* TODO new tx api */
- if (iwl_mvm_has_new_tx_api(mvm)) {
- WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
- } else {
- ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
- flags);
- if (ret)
- return ret;
- }
-
- /* configure wowlan configuration only if needed */
- if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
- /* wake on beacons only if beacon storing isn't supported */
- if (!fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_BEACON_STORING))
- wowlan_config_cmd.wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
-
- iwl_mvm_wowlan_config_key_params(mvm,
- d0i3_iter_data.connected_vif,
- true, flags);
-
- 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);
-}
-
-struct iwl_mvm_d0i3_exit_work_iter_data {
- struct iwl_mvm *mvm;
- struct iwl_wowlan_status *status;
- u32 wakeup_reasons;
-};
-
-static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- u32 reasons = data->wakeup_reasons;
-
- /* consider only the relevant station interface */
- if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
- data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
- return;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
- iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
- else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
- ieee80211_beacon_loss(vif);
- else
- iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
-}
-
-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_mvm_d0i3_exit_work_iter_data iter_data = {
- .mvm = mvm,
- };
-
- struct iwl_wowlan_status *status;
- u32 wakeup_reasons = 0;
-
- mutex_lock(&mvm->mutex);
-
- status = iwl_mvm_send_wowlan_get_status(mvm);
- if (IS_ERR_OR_NULL(status)) {
- /* set to NULL so we don't need to check before kfree'ing */
- status = NULL;
- goto out;
- }
-
- wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
-
- IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
-
- iter_data.wakeup_reasons = wakeup_reasons;
- iter_data.status = status;
- ieee80211_iterate_active_interfaces(mvm->hw,
- IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_d0i3_exit_work_iter,
- &iter_data);
-out:
- IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
- wakeup_reasons);
-
- kfree(status);
-
- /* the FW might have updated the regdomain */
- iwl_mvm_update_changed_regdom(mvm);
-
- iwl_mvm_resume_tcm(mvm);
- 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");
-
- if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
- return -EINVAL;
-
- 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);
-
- return _iwl_mvm_exit_d0i3(mvm);
-}
-
-#define IWL_MVM_D0I3_OPS \
- .enter_d0i3 = iwl_mvm_enter_d0i3, \
- .exit_d0i3 = iwl_mvm_exit_d0i3,
-#else /* CONFIG_PM */
-#define IWL_MVM_D0I3_OPS
-#endif /* CONFIG_PM */
-
#define IWL_MVM_COMMON_OPS \
/* these could be differentiated */ \
.async_cb = iwl_mvm_async_cb, \
.nic_error = iwl_mvm_nic_error, \
.cmd_queue_full = iwl_mvm_cmd_queue_full, \
.nic_config = iwl_mvm_nic_config, \
- IWL_MVM_D0I3_OPS \
/* as we only register one, these MUST be common! */ \
.start = iwl_op_mode_mvm_start, \
.stop = iwl_op_mode_mvm_stop
projects / linux.git / commitdiff