From: Emmanuel Grumbach Date: Tue, 11 Jun 2019 10:15:24 +0000 (+0300) Subject: iwlwifi: remove all the d0i3 references X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=58d3bef4163b40147058649b225fddcdd9de7e82;p=openwrt%2Fstaging%2Fblogic.git iwlwifi: remove all the d0i3 references As part of the d0i3 removal. Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho --- diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h b/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h index cbd1a8eed620..f37d6fee0225 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h @@ -8,7 +8,7 @@ * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH * Copyright(c) 2015 Intel Deutschland GmbH - * Copyright(c) 2018 Intel Corporation + * Copyright(c) 2018 - 2019 Intel Corporation * * 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 @@ -31,7 +31,7 @@ * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH * Copyright(c) 2015 Intel Deutschland GmbH - * Copyright(c) 2018 Intel Corporation + * Copyright(c) 2018 - 2019 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index 3a8a0c43cb6e..7493cae70ea6 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -1106,7 +1106,6 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw, iwl_mvm_free_nd(mvm); if (!unified_image) { - iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); if (mvm->fw_restart > 0) { mvm->fw_restart--; ieee80211_restart_hw(mvm->hw); @@ -2115,14 +2114,6 @@ out: * 2. We are using a unified image but had an error while exiting D3 */ set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); - /* - * When switching images we return 1, which causes mac80211 - * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART. - * This type of reconfig calls iwl_mvm_restart_complete(), - * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need - * to take the reference here. - */ - iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); return 1; } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index 0c188a82cfc1..6d67d3da31e0 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -1056,19 +1056,11 @@ static ssize_t iwl_dbgfs_fw_restart_write(struct iwl_mvm *mvm, char *buf, static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mvm *mvm, char *buf, size_t count, loff_t *ppos) { - int ret; - if (!iwl_mvm_firmware_running(mvm)) return -EIO; - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_NMI); - if (ret) - return ret; - iwl_force_nmi(mvm->trans); - iwl_mvm_unref(mvm, IWL_MVM_REF_NMI); - return count; } @@ -1380,19 +1372,12 @@ static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm, char *buf, size_t count, loff_t *ppos) { - int ret; - - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE); - if (ret) - return ret; if (count == 0) return 0; iwl_fw_dbg_collect(&mvm->fwrt, FW_DBG_TRIGGER_USER, buf, (count - 1), NULL); - iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE); - return count; } @@ -1579,87 +1564,6 @@ static ssize_t iwl_dbgfs_bcast_filters_macs_write(struct iwl_mvm *mvm, } #endif -#define PRINT_MVM_REF(ref) do { \ - if (mvm->refs[ref]) \ - pos += scnprintf(buf + pos, bufsz - pos, \ - "\t(0x%lx): %d %s\n", \ - BIT(ref), mvm->refs[ref], #ref); \ -} while (0) - -static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file, - char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct iwl_mvm *mvm = file->private_data; - int i, pos = 0; - char buf[256]; - const size_t bufsz = sizeof(buf); - u32 refs = 0; - - for (i = 0; i < IWL_MVM_REF_COUNT; i++) - if (mvm->refs[i]) - refs |= BIT(i); - - pos += scnprintf(buf + pos, bufsz - pos, "taken mvm refs: 0x%x\n", - refs); - - PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN); - PRINT_MVM_REF(IWL_MVM_REF_SCAN); - PRINT_MVM_REF(IWL_MVM_REF_ROC); - PRINT_MVM_REF(IWL_MVM_REF_ROC_AUX); - PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT); - PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS); - PRINT_MVM_REF(IWL_MVM_REF_USER); - PRINT_MVM_REF(IWL_MVM_REF_TX); - PRINT_MVM_REF(IWL_MVM_REF_TX_AGG); - PRINT_MVM_REF(IWL_MVM_REF_ADD_IF); - PRINT_MVM_REF(IWL_MVM_REF_START_AP); - PRINT_MVM_REF(IWL_MVM_REF_BSS_CHANGED); - PRINT_MVM_REF(IWL_MVM_REF_PREPARE_TX); - PRINT_MVM_REF(IWL_MVM_REF_PROTECT_TDLS); - PRINT_MVM_REF(IWL_MVM_REF_CHECK_CTKILL); - PRINT_MVM_REF(IWL_MVM_REF_PRPH_READ); - PRINT_MVM_REF(IWL_MVM_REF_PRPH_WRITE); - PRINT_MVM_REF(IWL_MVM_REF_NMI); - PRINT_MVM_REF(IWL_MVM_REF_TM_CMD); - PRINT_MVM_REF(IWL_MVM_REF_EXIT_WORK); - PRINT_MVM_REF(IWL_MVM_REF_PROTECT_CSA); - PRINT_MVM_REF(IWL_MVM_REF_FW_DBG_COLLECT); - PRINT_MVM_REF(IWL_MVM_REF_INIT_UCODE); - PRINT_MVM_REF(IWL_MVM_REF_SENDING_CMD); - PRINT_MVM_REF(IWL_MVM_REF_RX); - - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); -} - -static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf, - size_t count, loff_t *ppos) -{ - unsigned long value; - int ret; - bool taken; - - ret = kstrtoul(buf, 10, &value); - if (ret < 0) - return ret; - - mutex_lock(&mvm->mutex); - - taken = mvm->refs[IWL_MVM_REF_USER]; - if (value == 1 && !taken) - iwl_mvm_ref(mvm, IWL_MVM_REF_USER); - else if (value == 0 && taken) - iwl_mvm_unref(mvm, IWL_MVM_REF_USER); - else - ret = -EINVAL; - - mutex_unlock(&mvm->mutex); - - if (ret < 0) - return ret; - return count; -} - #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm) #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \ @@ -1692,21 +1596,14 @@ iwl_dbgfs_prph_reg_read(struct file *file, int pos = 0; char buf[32]; const size_t bufsz = sizeof(buf); - int ret; if (!mvm->dbgfs_prph_reg_addr) return -EINVAL; - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_READ); - if (ret) - return ret; - pos += scnprintf(buf + pos, bufsz - pos, "Reg 0x%x: (0x%x)\n", mvm->dbgfs_prph_reg_addr, iwl_read_prph(mvm->trans, mvm->dbgfs_prph_reg_addr)); - iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_READ); - return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } @@ -1716,7 +1613,6 @@ iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf, { u8 args; u32 value; - int ret; args = sscanf(buf, "%i %i", &mvm->dbgfs_prph_reg_addr, &value); /* if we only want to set the reg address - nothing more to do */ @@ -1727,13 +1623,8 @@ iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf, if (args != 2) return -EINVAL; - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE); - if (ret) - return ret; - iwl_write_prph(mvm->trans, mvm->dbgfs_prph_reg_addr, value); - iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE); out: return count; } @@ -1892,7 +1783,6 @@ MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10); MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10); MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10); MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8); -MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8); MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8); MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64); MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl, @@ -2091,7 +1981,6 @@ void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) MVM_DEBUGFS_ADD_FILE(bt_force_ant, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir, 0600); MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, 0600); - MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, 0600); MVM_DEBUGFS_ADD_FILE(fw_dbg_conf, mvm->debugfs_dir, 0600); MVM_DEBUGFS_ADD_FILE(fw_dbg_collect, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, 0200); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index ed6453b2fc79..251e7c235aaa 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -1326,10 +1326,6 @@ int iwl_mvm_up(struct iwl_mvm *mvm) goto error; } - /* allow FW/transport low power modes if not during restart */ - if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) - iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); - if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_UPDATE_DB); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index a7ed4e85cf8f..c17f769b3451 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -213,91 +213,6 @@ static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, struct ieee80211_sta *sta, struct ieee80211_key_conf *key); -void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) -{ - if (!iwl_mvm_is_d0i3_supported(mvm)) - return; - - IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); - spin_lock_bh(&mvm->refs_lock); - mvm->refs[ref_type]++; - spin_unlock_bh(&mvm->refs_lock); - iwl_trans_ref(mvm->trans); -} - -void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) -{ - if (!iwl_mvm_is_d0i3_supported(mvm)) - return; - - IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); - spin_lock_bh(&mvm->refs_lock); - if (WARN_ON(!mvm->refs[ref_type])) { - spin_unlock_bh(&mvm->refs_lock); - return; - } - mvm->refs[ref_type]--; - spin_unlock_bh(&mvm->refs_lock); - iwl_trans_unref(mvm->trans); -} - -static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, - enum iwl_mvm_ref_type except_ref) -{ - int i, j; - - if (!iwl_mvm_is_d0i3_supported(mvm)) - return; - - spin_lock_bh(&mvm->refs_lock); - for (i = 0; i < IWL_MVM_REF_COUNT; i++) { - if (except_ref == i || !mvm->refs[i]) - continue; - - IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", - i, mvm->refs[i]); - for (j = 0; j < mvm->refs[i]; j++) - iwl_trans_unref(mvm->trans); - mvm->refs[i] = 0; - } - spin_unlock_bh(&mvm->refs_lock); -} - -bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) -{ - int i; - bool taken = false; - - if (!iwl_mvm_is_d0i3_supported(mvm)) - return true; - - spin_lock_bh(&mvm->refs_lock); - for (i = 0; i < IWL_MVM_REF_COUNT; i++) { - if (mvm->refs[i]) { - taken = true; - break; - } - } - spin_unlock_bh(&mvm->refs_lock); - - return taken; -} - -int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) -{ - iwl_mvm_ref(mvm, ref_type); - - if (!wait_event_timeout(mvm->d0i3_exit_waitq, - !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), - HZ)) { - WARN_ON_ONCE(1); - iwl_mvm_unref(mvm, ref_type); - return -EIO; - } - - return 0; -} - static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) { int i; @@ -857,10 +772,6 @@ static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, __skb_queue_tail(&mvm->d0i3_tx, skb); - /* trigger wakeup */ - iwl_mvm_ref(mvm, IWL_MVM_REF_TX); - iwl_mvm_unref(mvm, IWL_MVM_REF_TX); - defer = true; out: spin_unlock(&mvm->d0i3_tx_lock); @@ -1080,7 +991,6 @@ static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; - bool tx_agg_ref = false; struct ieee80211_sta *sta = params->sta; enum ieee80211_ampdu_mlme_action action = params->action; u16 tid = params->tid; @@ -1095,31 +1005,6 @@ static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, if (!(mvm->nvm_data->sku_cap_11n_enable)) return -EACCES; - /* return from D0i3 before starting a new Tx aggregation */ - switch (action) { - case IEEE80211_AMPDU_TX_START: - case IEEE80211_AMPDU_TX_STOP_CONT: - case IEEE80211_AMPDU_TX_STOP_FLUSH: - case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: - case IEEE80211_AMPDU_TX_OPERATIONAL: - /* - * for tx start, wait synchronously until D0i3 exit to - * get the correct sequence number for the tid. - * additionally, some other ampdu actions use direct - * target access, which is not handled automatically - * by the trans layer (unlike commands), so wait for - * d0i3 exit in these cases as well. - */ - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); - if (ret) - return ret; - - tx_agg_ref = true; - break; - default: - break; - } - mutex_lock(&mvm->mutex); switch (action) { @@ -1180,13 +1065,6 @@ static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, } mutex_unlock(&mvm->mutex); - /* - * If the tid is marked as started, we won't use it for offloaded - * traffic on the next D0i3 entry. It's safe to unref. - */ - if (tx_agg_ref) - iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); - return ret; } @@ -1210,11 +1088,6 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) { - /* cleanup all stale references (scan, roc), but keep the - * ucode_down ref until reconfig is complete - */ - iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); - iwl_mvm_stop_device(mvm); mvm->cur_aid = 0; @@ -1272,14 +1145,6 @@ int __iwl_mvm_mac_start(struct iwl_mvm *mvm) clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); /* Clean up some internal and mac80211 state on restart */ iwl_mvm_restart_cleanup(mvm); - } else { - /* Hold the reference to prevent runtime suspend while - * the start procedure runs. It's a bit confusing - * that the UCODE_DOWN reference is taken, but it just - * means "UCODE is not UP yet". ( TODO: rename this - * reference). - */ - iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); } ret = iwl_mvm_up(mvm); @@ -1339,9 +1204,6 @@ static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", ret); - /* allow transport/FW low power modes */ - iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); - iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); /* @@ -1593,15 +1455,6 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, mvmvif->mvm = mvm; RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); - /* - * make sure D0i3 exit is completed, otherwise a target access - * during tx queue configuration could be done when still in - * D0i3 state. - */ - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); - if (ret) - return ret; - /* * Not much to do here. The stack will not allow interface * types or combinations that we didn't advertise, so we @@ -1737,8 +1590,6 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, out_unlock: mutex_unlock(&mvm->mutex); - iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); - return ret; } @@ -2506,7 +2357,6 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, iwl_mvm_sf_update(mvm, vif, false); iwl_mvm_power_vif_assoc(mvm, vif); if (vif->p2p) { - iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_PROT, IEEE80211_SMPS_DYNAMIC); @@ -2553,9 +2403,6 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, if (ret) IWL_ERR(mvm, "failed to update quotas\n"); - if (vif->p2p) - iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); - /* this will take the cleared BSSID from bss_conf */ ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); if (ret) @@ -2643,14 +2490,6 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ret, i; - /* - * iwl_mvm_mac_ctxt_add() might read directly from the device - * (the system time), so make sure it is available. - */ - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); - if (ret) - return ret; - mutex_lock(&mvm->mutex); /* Send the beacon template */ @@ -2746,8 +2585,6 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, if (vif->p2p && mvm->p2p_device_vif) iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); - iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); - iwl_mvm_bt_coex_vif_change(mvm); /* we don't support TDLS during DCM */ @@ -2769,7 +2606,6 @@ out_remove: iwl_mvm_mac_ctxt_remove(mvm, vif); out_unlock: mutex_unlock(&mvm->mutex); - iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); return ret; } @@ -2807,8 +2643,6 @@ static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, iwl_mvm_bt_coex_vif_change(mvm); - iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); - /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ if (vif->p2p && mvm->p2p_device_vif) iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); @@ -2882,14 +2716,6 @@ static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); - /* - * iwl_mvm_bss_info_changed_station() might call - * iwl_mvm_protect_session(), which reads directly from - * the device (the system time), so make sure it is available. - */ - if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) - return; - mutex_lock(&mvm->mutex); if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) @@ -2913,7 +2739,6 @@ static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, } mutex_unlock(&mvm->mutex); - iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); } static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, @@ -3483,13 +3308,6 @@ static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; - /* - * iwl_mvm_protect_session() reads directly from the device - * (the system time), so make sure it is available. - */ - if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) - return; - if (req_duration > duration) duration = req_duration; @@ -3497,8 +3315,6 @@ static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, /* Try really hard to protect the session and hear a beacon */ iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); mutex_unlock(&mvm->mutex); - - iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); } static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, @@ -4314,23 +4130,12 @@ static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { u32 duration = 3 * vif->bss_conf.beacon_int; - - /* iwl_mvm_protect_session() reads directly from the - * device (the system time), so make sure it is - * available. - */ - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); - if (ret) - goto out_remove_binding; - /* Protect the session to make sure we hear the first * beacon on the new channel. */ iwl_mvm_protect_session(mvm, vif, duration, duration, vif->bss_conf.beacon_int / 2, true); - - iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); } iwl_mvm_update_quotas(mvm, false, NULL); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index e5703aa7935e..245e8c721102 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -258,38 +258,6 @@ enum iwl_mvm_smps_type_request { NUM_IWL_MVM_SMPS_REQ, }; -enum iwl_mvm_ref_type { - IWL_MVM_REF_UCODE_DOWN, - IWL_MVM_REF_SCAN, - IWL_MVM_REF_ROC, - IWL_MVM_REF_ROC_AUX, - IWL_MVM_REF_P2P_CLIENT, - IWL_MVM_REF_AP_IBSS, - IWL_MVM_REF_USER, - IWL_MVM_REF_TX, - IWL_MVM_REF_TX_AGG, - IWL_MVM_REF_ADD_IF, - IWL_MVM_REF_START_AP, - IWL_MVM_REF_BSS_CHANGED, - IWL_MVM_REF_PREPARE_TX, - IWL_MVM_REF_PROTECT_TDLS, - IWL_MVM_REF_CHECK_CTKILL, - IWL_MVM_REF_PRPH_READ, - IWL_MVM_REF_PRPH_WRITE, - IWL_MVM_REF_NMI, - IWL_MVM_REF_TM_CMD, - IWL_MVM_REF_EXIT_WORK, - IWL_MVM_REF_PROTECT_CSA, - IWL_MVM_REF_FW_DBG_COLLECT, - IWL_MVM_REF_INIT_UCODE, - IWL_MVM_REF_SENDING_CMD, - IWL_MVM_REF_RX, - - /* update debugfs.c when changing this */ - - IWL_MVM_REF_COUNT, -}; - enum iwl_bt_force_ant_mode { BT_FORCE_ANT_DIS = 0, BT_FORCE_ANT_AUTO, @@ -1014,10 +982,6 @@ struct iwl_mvm { unsigned long fw_key_table[BITS_TO_LONGS(STA_KEY_MAX_NUM)]; u8 fw_key_deleted[STA_KEY_MAX_NUM]; - /* references taken by the driver and spinlock protecting them */ - spinlock_t refs_lock; - u8 refs[IWL_MVM_REF_COUNT]; - u8 vif_count; struct ieee80211_vif __rcu *vif_id_to_mac[NUM_MAC_INDEX_DRIVER]; @@ -1294,13 +1258,6 @@ iwl_mvm_rcu_dereference_vif_id(struct iwl_mvm *mvm, u8 vif_id, bool rcu) lockdep_is_held(&mvm->mutex)); } -static inline bool iwl_mvm_is_d0i3_supported(struct iwl_mvm *mvm) -{ - return !iwlwifi_mod_params.d0i3_disable && - fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_D0I3_SUPPORT); -} - static inline bool iwl_mvm_is_adaptive_dwell_supported(struct iwl_mvm *mvm) { return fw_has_api(&mvm->fw->ucode_capa, @@ -1903,12 +1860,6 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, bool offload_ns, u32 cmd_flags); -/* D0i3 */ -void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type); -void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type); -int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type); -bool iwl_mvm_ref_taken(struct iwl_mvm *mvm); - #ifdef CONFIG_PM void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq); int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 2aa5320e9d1a..255b402f7b19 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -566,23 +566,16 @@ unlock: static int iwl_mvm_fwrt_dump_start(void *ctx) { struct iwl_mvm *mvm = ctx; - int ret = 0; mutex_lock(&mvm->mutex); - ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); - if (ret) - mutex_unlock(&mvm->mutex); - - return ret; + return 0; } static void iwl_mvm_fwrt_dump_end(void *ctx) { struct iwl_mvm *mvm = ctx; - iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); - mutex_unlock(&mvm->mutex); } @@ -721,7 +714,6 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, INIT_LIST_HEAD(&mvm->add_stream_txqs); 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); init_waitqueue_head(&mvm->rx_sync_waitq); @@ -834,13 +826,11 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, goto out_free; mutex_lock(&mvm->mutex); - iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); err = iwl_run_init_mvm_ucode(mvm, true); if (err && err != -ERFKILL) iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER); if (!iwlmvm_mod_params.init_dbg || !err) iwl_mvm_stop_device(mvm); - iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); mutex_unlock(&mvm->mutex); if (err < 0) { IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); @@ -872,11 +862,6 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, else memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); - /* The transport always starts with a taken reference, we can - * release it now if d0i3 is supported */ - if (iwl_mvm_is_d0i3_supported(mvm)) - iwl_trans_unref(mvm->trans); - iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); return op_mode; @@ -900,13 +885,6 @@ 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; - /* If d0i3 is supported, we have released the reference that - * the transport started with, so we should take it back now - * that we are leaving. - */ - if (iwl_mvm_is_d0i3_supported(mvm)) - iwl_trans_ref(mvm->trans); - iwl_mvm_leds_exit(mvm); iwl_mvm_thermal_exit(mvm); @@ -1320,9 +1298,6 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && mvm->hw_registered && !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { - /* don't let the transport/FW power down */ - iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); - if (mvm->fw->ucode_capa.error_log_size) { u32 src_size = mvm->fw->ucode_capa.error_log_size; u32 src_addr = mvm->fw->ucode_capa.error_log_addr; @@ -1520,19 +1495,6 @@ int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); - /* - * 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, @@ -1728,7 +1690,6 @@ out: iwl_mvm_update_changed_regdom(mvm); iwl_mvm_resume_tcm(mvm); - iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); mutex_unlock(&mvm->mutex); } @@ -1769,7 +1730,6 @@ 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); } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c index 160b0db27103..0ad8ed23a455 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c @@ -8,6 +8,7 @@ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH + * Copyright(c) 2018 - 2019 Intel Corporation * * 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 @@ -29,6 +30,8 @@ * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * Copyright(c) 2016 - 2017 Intel Deutschland GmbH + * Copyright(c) 2018 - 2019 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -349,7 +352,6 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, u32 rate_n_flags; u32 rx_pkt_status; u8 crypt_len = 0; - bool take_ref; phy_info = &mvm->last_phy_info; rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; @@ -557,22 +559,8 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, ieee80211_is_probe_resp(hdr->frame_control))) rx_status->boottime_ns = ktime_get_boottime_ns(); - /* Take a reference briefly to kick off a d0i3 entry delay so - * we can handle bursts of RX packets without toggling the - * state too often. But don't do this for beacons if we are - * going to idle because the beacon filtering changes we make - * cause the firmware to send us collateral beacons. */ - take_ref = !(test_bit(STATUS_TRANS_GOING_IDLE, &mvm->trans->status) && - ieee80211_is_beacon(hdr->frame_control)); - - if (take_ref) - iwl_mvm_ref(mvm, IWL_MVM_REF_RX); - iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len, crypt_len, rxb); - - if (take_ref) - iwl_mvm_unref(mvm, IWL_MVM_REF_RX); } struct iwl_mvm_stat_data { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index 5999b4ebd699..2652e6ce4089 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -512,7 +512,6 @@ void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; ieee80211_scan_completed(mvm->hw, &info); - iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); cancel_delayed_work(&mvm->scan_timeout_dwork); iwl_mvm_resume_tcm(mvm); } else { @@ -1758,7 +1757,6 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); mvm->scan_status |= IWL_MVM_SCAN_REGULAR; mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); - iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); schedule_delayed_work(&mvm->scan_timeout_dwork, msecs_to_jiffies(SCAN_TIMEOUT)); @@ -1884,7 +1882,6 @@ void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); ieee80211_scan_completed(mvm->hw, &info); mvm->scan_vif = NULL; - iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); cancel_delayed_work(&mvm->scan_timeout_dwork); iwl_mvm_resume_tcm(mvm); } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { @@ -2099,10 +2096,6 @@ out: mvm->scan_status &= ~type; if (type == IWL_MVM_SCAN_REGULAR) { - /* Since the rx handler won't do anything now, we have - * to release the scan reference here. - */ - iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); cancel_delayed_work(&mvm->scan_timeout_dwork); if (notify) { struct cfg80211_scan_info info = { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c index 9df21a8d1fc1..1851719e9f4b 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c @@ -205,19 +205,10 @@ void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw, struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int; - /* - * iwl_mvm_protect_session() reads directly from the device - * (the system time), so make sure it is available. - */ - if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_TDLS)) - return; - mutex_lock(&mvm->mutex); /* Protect the session to hear the TDLS setup response on the channel */ iwl_mvm_protect_session(mvm, vif, duration, duration, 100, true); mutex_unlock(&mvm->mutex); - - iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS); } static const char * diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c index 4d34e5ab1bff..a06bc63fb516 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c @@ -106,10 +106,8 @@ void iwl_mvm_roc_done_wk(struct work_struct *wk) * in the case that the time event actually completed in the firmware * (which is handled in iwl_mvm_te_handle_notif). */ - if (test_and_clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) - iwl_mvm_unref(mvm, IWL_MVM_REF_ROC); - if (test_and_clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) - iwl_mvm_unref(mvm, IWL_MVM_REF_ROC_AUX); + clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status); + clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status); synchronize_net(); @@ -357,7 +355,6 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm, if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) { set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status); - iwl_mvm_ref(mvm, IWL_MVM_REF_ROC); ieee80211_ready_on_channel(mvm->hw); } else if (te_data->id == TE_CHANNEL_SWITCH_PERIOD) { iwl_mvm_te_handle_notify_csa(mvm, te_data, notif); @@ -405,7 +402,6 @@ static int iwl_mvm_aux_roc_te_handle_notif(struct iwl_mvm *mvm, } else if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_START) { set_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status); te_data->running = true; - iwl_mvm_ref(mvm, IWL_MVM_REF_ROC_AUX); ieee80211_ready_on_channel(mvm->hw); /* Start TE */ } else { IWL_DEBUG_TE(mvm, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c index 0b3e5c99d316..32a708301cfc 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -5,7 +5,7 @@ * * GPL LICENSE SUMMARY * - * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. + * Copyright(c) 2013 - 2014, 2019 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH * Copyright(c) 2015 - 2016 Intel Deutschland GmbH * @@ -27,7 +27,7 @@ * * BSD LICENSE * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. + * Copyright(c) 2012 - 2014, 2019 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH * Copyright(c) 2015 - 2016 Intel Deutschland GmbH * All rights reserved. @@ -298,16 +298,8 @@ static void check_exit_ctkill(struct work_struct *work) if (__iwl_mvm_mac_start(mvm)) goto reschedule; - /* make sure the device is available for direct read/writes */ - if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) { - __iwl_mvm_mac_stop(mvm); - goto reschedule; - } - ret = iwl_mvm_get_temp(mvm, &temp); - iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL); - __iwl_mvm_mac_stop(mvm); if (ret) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c index b8e20a01c192..06ef853fb84a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c @@ -88,17 +88,11 @@ int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) * the mutex, this ensures we don't try to send two * (or more) synchronous commands at a time. */ - if (!(cmd->flags & CMD_ASYNC)) { + if (!(cmd->flags & CMD_ASYNC)) lockdep_assert_held(&mvm->mutex); - if (!(cmd->flags & CMD_SEND_IN_IDLE)) - iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD); - } ret = iwl_trans_send_cmd(mvm->trans, cmd); - if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE))) - iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD); - /* * If the caller wants the SKB, then don't hide any problems, the * caller might access the response buffer which will be NULL if