From patchwork Tue Jun 18 16:44:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Korenblit, Miriam Rachel" X-Patchwork-Id: 13702726 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6190B13C674 for ; Tue, 18 Jun 2024 16:44:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718729067; cv=none; b=Y3lw1EmaKg7bJ46j6Wgc9pdbXMPKX3cu36AqbQRk+no5rmQ8/d78lhjRCQtB9Ph5gBLz1D7hHkjgxUOYnCWK/J42svQtdOU6xQiHzrk+OSu2XYBBZ3w1AXrU4moCkRegzAB6QaM+XTnRphWXXSFFcT2AmJwnBXATbFFlejEFbas= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718729067; c=relaxed/simple; bh=dnsPCnoP48ahpUkMbaJr4nLD///1EeJGIkPTTg4t8K8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KqYnUR782M+eyYR8Ng8LCwxLXfhlBRbnCzpQJuxWNuo48mk5puxYE37HPszTPvigju5f0YvzN8uVSpauepqdtEWejS9ThgvBuur5u3X/9L1F8IO12nOt6+F3SGb0ebQpbYRrYFwu9QVdStcWdXH2lGvf9/cgxhppHVlhO+NahO0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=dFlU20IJ; arc=none smtp.client-ip=192.198.163.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="dFlU20IJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1718729065; x=1750265065; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=dnsPCnoP48ahpUkMbaJr4nLD///1EeJGIkPTTg4t8K8=; b=dFlU20IJziPo5ljj3Pk1z7cafJJuBE4yZm8RNLWnrIpYjht5u63kQ27C QeAGScgcnG1Z8NP+LPS5+UukPfT2vUteRhLo/Z2/mnLy4Jbq7aup/jt1O dyDben0oLNuerw21jO2nuXWSpLKcBhIN7pJFPX5CllHY5CwHyTNF9Z4ox Dp3hrGfotz4l/uLey+3lnkvwWlCl2jQ8DwI2uetI09wQ/6+37XIGglPwx bWbNdr+2/Mrrog7YrWd85l6jT5L5ZyaKpUXw11KY9ckZcRGadVz9/uKoR BROBYLhMAlOUkLQZYiVjR7DlBwv64/6UvRD+5YIgfLditXKGWt5rfARkn w==; X-CSE-ConnectionGUID: nUb2bIURRNqkMBB5d61zsw== X-CSE-MsgGUID: tKbnSuv5RUGFV5vs0k3IAw== X-IronPort-AV: E=McAfee;i="6700,10204,11107"; a="26257164" X-IronPort-AV: E=Sophos;i="6.08,247,1712646000"; d="scan'208";a="26257164" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jun 2024 09:44:24 -0700 X-CSE-ConnectionGUID: DShJ/lK9QsiAQU/HHDFxUg== X-CSE-MsgGUID: e6GQg5mgQ8qgx6v3kP4DiA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,247,1712646000"; d="scan'208";a="42306500" Received: from weis0040.iil.intel.com ([10.12.217.108]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jun 2024 09:44:23 -0700 From: Miri Korenblit To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Emmanuel Grumbach Subject: [PATCH 01/11] wifi: iwlwifi: support fast resume Date: Tue, 18 Jun 2024 19:44:03 +0300 Message-Id: <20240618194245.03b8d2801044.I613d17c712de7a0d611cde4e14f37ebbe0c3c964@changeid> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240618164413.2416719-1-miriam.rachel.korenblit@intel.com> References: <20240618164413.2416719-1-miriam.rachel.korenblit@intel.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Israel (74) Limited From: Emmanuel Grumbach This will allow to suspend / resume the system without resetting the firmware. This will allow to reduce the resume time. In case the fast_resume fails, stop the device and bring it up from scratch. Raise the timeout for the D3_END notification since in some iterations, it took 240ms. Signed-off-by: Emmanuel Grumbach Signed-off-by: Miri Korenblit --- drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 85 +++++++++++++++++-- .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 40 ++++++++- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 14 ++- drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 2 +- 4 files changed, 130 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index 54f4acbbd05b..b4d650583ac2 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -2493,6 +2493,9 @@ static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, return; } + if (mvm->fast_resume) + return; + iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); iwl_mvm_convert_gtk_v3(status, data->gtk); iwl_mvm_convert_igtk(status, &data->igtk[0]); @@ -3049,7 +3052,7 @@ static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, if (iwl_mvm_rt_status(mvm->trans, mvm->trans->dbg.lmac_error_event_table[0], &err_id)) { - if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { + if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN && vif) { struct cfg80211_wowlan_wakeup wakeup = { .rfkill_release = true, }; @@ -3366,7 +3369,7 @@ static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) return ret; } -#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) +#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 3) static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, struct iwl_d3_data *d3_data) @@ -3377,12 +3380,22 @@ static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) }; + static const u16 d3_fast_resume_notif[] = { + WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) + }; struct iwl_notification_wait wait_d3_notif; int ret; - iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, - d3_resume_notif, ARRAY_SIZE(d3_resume_notif), - iwl_mvm_wait_d3_notif, d3_data); + if (mvm->fast_resume) + iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, + d3_fast_resume_notif, + ARRAY_SIZE(d3_fast_resume_notif), + iwl_mvm_wait_d3_notif, d3_data); + else + iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, + d3_resume_notif, + ARRAY_SIZE(d3_resume_notif), + iwl_mvm_wait_d3_notif, d3_data); ret = iwl_mvm_resume_firmware(mvm, d3_data->test); if (ret) { @@ -3567,6 +3580,68 @@ void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) device_set_wakeup_enable(mvm->trans->dev, enabled); } +void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) +{ + struct iwl_d3_manager_config d3_cfg_cmd_data = {}; + int ret; + + lockdep_assert_held(&mvm->mutex); + + IWL_DEBUG_WOWLAN(mvm, "Starting fast suspend flow\n"); + + mvm->fast_resume = true; + set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); + + WARN_ON(iwl_mvm_power_update_device(mvm)); + mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; + ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, CMD_SEND_IN_D3, + sizeof(d3_cfg_cmd_data), &d3_cfg_cmd_data); + if (ret) + IWL_ERR(mvm, + "fast suspend: couldn't send D3_CONFIG_CMD %d\n", ret); + + WARN_ON(iwl_mvm_power_update_mac(mvm)); + + ret = iwl_trans_d3_suspend(mvm->trans, false, false); + if (ret) + IWL_ERR(mvm, "fast suspend: trans_d3_suspend failed %d\n", ret); +} + +int iwl_mvm_fast_resume(struct iwl_mvm *mvm) +{ + struct iwl_d3_data d3_data = { + .notif_expected = + IWL_D3_NOTIF_D3_END_NOTIF, + }; + int ret; + + lockdep_assert_held(&mvm->mutex); + + IWL_DEBUG_WOWLAN(mvm, "Starting the fast resume flow\n"); + + mvm->last_reset_or_resume_time_jiffies = jiffies; + iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); + + if (iwl_mvm_check_rt_status(mvm, NULL)) { + set_bit(STATUS_FW_ERROR, &mvm->trans->status); + iwl_mvm_dump_nic_error_log(mvm); + iwl_dbg_tlv_time_point(&mvm->fwrt, + IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); + iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, + false, 0); + return -ENODEV; + } + ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); + clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); + mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; + mvm->fast_resume = false; + + if (ret) + IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret); + + return ret; +} + #ifdef CONFIG_IWLWIFI_DEBUGFS static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 896e560f5a82..df2f121aff55 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1209,6 +1209,7 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) int __iwl_mvm_mac_start(struct iwl_mvm *mvm) { + bool fast_resume = false; int ret; lockdep_assert_held(&mvm->mutex); @@ -1234,6 +1235,30 @@ int __iwl_mvm_mac_start(struct iwl_mvm *mvm) mvm->nvm_data = NULL; } +#ifdef CONFIG_PM + /* fast_resume will be cleared by iwl_mvm_fast_resume */ + fast_resume = mvm->fast_resume; + + if (fast_resume) { + ret = iwl_mvm_fast_resume(mvm); + if (ret) { + iwl_mvm_stop_device(mvm); + /* iwl_mvm_up() will be called further down */ + } else { + /* + * We clear IWL_MVM_STATUS_FIRMWARE_RUNNING upon + * mac_down() so that debugfs will stop honoring + * requests after we flush all the workers. + * Set the IWL_MVM_STATUS_FIRMWARE_RUNNING bit again + * now that we are back. This is a bit abusing the + * flag since the firmware wasn't really ever stopped, + * but this still serves the purpose. + */ + set_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); + } + } +#endif /* CONFIG_PM */ + if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { /* * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART @@ -1244,7 +1269,10 @@ int __iwl_mvm_mac_start(struct iwl_mvm *mvm) /* Clean up some internal and mac80211 state on restart */ iwl_mvm_restart_cleanup(mvm); } - ret = iwl_mvm_up(mvm); + + /* we also want to load the firmware if fast_resume failed */ + if (!fast_resume || ret) + ret = iwl_mvm_up(mvm); iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, NULL); @@ -1327,7 +1355,7 @@ void iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, } } -void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) +void __iwl_mvm_mac_stop(struct iwl_mvm *mvm, bool suspend) { lockdep_assert_held(&mvm->mutex); @@ -1343,7 +1371,11 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) if (!iwl_mvm_has_new_station_api(mvm->fw)) iwl_mvm_rm_aux_sta(mvm); - iwl_mvm_stop_device(mvm); + if (suspend && + mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) + iwl_mvm_fast_suspend(mvm); + else + iwl_mvm_stop_device(mvm); iwl_mvm_async_handlers_purge(mvm); /* async_handlers_list is empty and will stay empty: HW is stopped */ @@ -1412,7 +1444,7 @@ void iwl_mvm_mac_stop(struct ieee80211_hw *hw, bool suspend) iwl_mvm_mei_set_sw_rfkill_state(mvm); mutex_lock(&mvm->mutex); - __iwl_mvm_mac_stop(mvm); + __iwl_mvm_mac_stop(mvm, suspend); mutex_unlock(&mvm->mutex); /* diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index 54c3553db219..a57f4738a8c8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -1161,6 +1161,7 @@ struct iwl_mvm { struct ieee80211_channel **nd_channels; int n_nd_channels; bool net_detect; + bool fast_resume; u8 offload_tid; #ifdef CONFIG_IWLWIFI_DEBUGFS bool d3_wake_sysassert; @@ -1739,7 +1740,7 @@ struct iwl_rate_info { u8 ieee; /* MAC header: IWL_RATE_6M_IEEE, etc. */ }; -void __iwl_mvm_mac_stop(struct iwl_mvm *mvm); +void __iwl_mvm_mac_stop(struct iwl_mvm *mvm, bool suspend); int __iwl_mvm_mac_start(struct iwl_mvm *mvm); /****************** @@ -2261,11 +2262,22 @@ extern const struct file_operations iwl_dbgfs_d3_test_ops; #ifdef CONFIG_PM void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif); +void iwl_mvm_fast_suspend(struct iwl_mvm *mvm); +int iwl_mvm_fast_resume(struct iwl_mvm *mvm); #else static inline void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { } + +static inline void iwl_mvm_fast_suspend(struct iwl_mvm *mvm) +{ +} + +static inline int iwl_mvm_fast_resume(struct iwl_mvm *mvm) +{ + return 0; +} #endif void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta, struct iwl_wowlan_config_cmd *cmd); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c index 45b431ffbc97..718184be19b3 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -299,7 +299,7 @@ static void check_exit_ctkill(struct work_struct *work) ret = iwl_mvm_get_temp(mvm, &temp); - __iwl_mvm_mac_stop(mvm); + __iwl_mvm_mac_stop(mvm, false); if (ret) goto reschedule;