From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5DF00C433EF for ; Wed, 8 Dec 2021 11:22:23 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 96379268C; Wed, 8 Dec 2021 12:21:31 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 96379268C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1638962541; bh=COzCVz3dM6GMLmmpEmj0iYNBEz9yXRcNSy9+Tu+aSNI=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=u6zQZ34OD7PYRw/y9cb7RvGH6/L9/oughAKHPgCsGO1cF0lDsrG7Nr7q9lKJQdQ2j hNXb/AfAe9w5pLf92wI9NmR5N1rwXgL7UT0rOmJ/EGEi90PhfAdpcd5POAcyOJ0xZZ g9h5pn7hBJhnqQcQbxFtkwD1qfpo2V7lDUFFNY/c= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 4DA7DF80609; Wed, 8 Dec 2021 12:12:38 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id E479AF80605; Wed, 8 Dec 2021 12:12:36 +0100 (CET) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id A2FCEF805FC for ; Wed, 8 Dec 2021 12:12:33 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz A2FCEF805FC X-IronPort-AV: E=McAfee;i="6200,9189,10191"; a="236548478" X-IronPort-AV: E=Sophos;i="5.87,297,1631602800"; d="scan'208";a="236548478" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2021 03:12:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,297,1631602800"; d="scan'208";a="600600494" Received: from crojewsk-ctrl.igk.intel.com ([10.102.9.28]) by FMSMGA003.fm.intel.com with ESMTP; 08 Dec 2021 03:12:30 -0800 From: Cezary Rojewski To: alsa-devel@alsa-project.org Subject: [RFC 29/37] ASoC: Intel: avs: Coredump and recovery flow Date: Wed, 8 Dec 2021 12:12:53 +0100 Message-Id: <20211208111301.1817725-30-cezary.rojewski@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211208111301.1817725-1-cezary.rojewski@intel.com> References: <20211208111301.1817725-1-cezary.rojewski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Cezary Rojewski , upstream@semihalf.com, harshapriya.n@intel.com, yung-chuan.liao@linux.intel.com, rad@semihalf.com, pierre-louis.bossart@linux.intel.com, tiwai@suse.com, hdegoede@redhat.com, broonie@kernel.org, ranjani.sridharan@linux.intel.com, amadeuszx.slawinski@linux.intel.com, cujomalainey@chromium.org, peter.ujfalusi@linux.intel.com, lma@semihalf.com X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" In rare occassions, under stress conditions or hardware malfunction, DSP firmware may fail. Software is notified about such situation with EXCEPTION_CAUGHT notification. IPC timeout is also counted as critical device failure. More often than not, driver can recover from such situations by performing full reset: killing and restarting ADSP. Signed-off-by: Amadeusz Sławiński Signed-off-by: Cezary Rojewski --- sound/soc/intel/Kconfig | 1 + sound/soc/intel/avs/avs.h | 3 ++ sound/soc/intel/avs/ipc.c | 87 ++++++++++++++++++++++++++++++++-- sound/soc/intel/avs/messages.h | 5 ++ 4 files changed, 93 insertions(+), 3 deletions(-) diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig index b01c492d3514..8c059e2a5a36 100644 --- a/sound/soc/intel/Kconfig +++ b/sound/soc/intel/Kconfig @@ -220,6 +220,7 @@ config SND_SOC_INTEL_AVS select SND_HDA_EXT_CORE select SND_HDA_DSP_LOADER select SND_INTEL_NHLT + select WANT_DEV_COREDUMP help Enable support for Intel(R) cAVS 1.5 platforms with DSP capabilities. This includes Skylake, Kabylake, Amberlake and diff --git a/sound/soc/intel/avs/avs.h b/sound/soc/intel/avs/avs.h index 74194d8c04fe..4562f187939d 100644 --- a/sound/soc/intel/avs/avs.h +++ b/sound/soc/intel/avs/avs.h @@ -33,6 +33,7 @@ struct avs_dsp_ops { int (* const load_lib)(struct avs_dev *, struct firmware *, u32); int (* const transfer_mods)(struct avs_dev *, bool, struct avs_module_entry *, u32); + int (* const coredump)(struct avs_dev *, union avs_notify_msg *); }; #define avs_dsp_op(adev, op, ...) \ @@ -147,6 +148,8 @@ struct avs_ipc { struct mutex msg_mutex; struct completion done_completion; struct completion busy_completion; + + struct work_struct recovery_work; }; #define AVS_EIPC EREMOTEIO diff --git a/sound/soc/intel/avs/ipc.c b/sound/soc/intel/avs/ipc.c index c461f7db3683..a8d2323e07a7 100644 --- a/sound/soc/intel/avs/ipc.c +++ b/sound/soc/intel/avs/ipc.c @@ -14,6 +14,78 @@ #define AVS_IPC_TIMEOUT_MS 300 +static void avs_dsp_recovery(struct avs_dev *adev) +{ + struct avs_soc_component *acomp; + unsigned int core_mask; + int ret; + + mutex_lock(&adev->comp_list_mutex); + /* disconnect all running streams */ + list_for_each_entry(acomp, &adev->comp_list, node) { + struct snd_soc_pcm_runtime *rtd; + struct snd_soc_card *card; + + card = acomp->base.card; + if (!card) + continue; + + for_each_card_rtds(card, rtd) { + struct snd_pcm *pcm; + int dir; + + pcm = rtd->pcm; + if (!pcm || rtd->dai_link->no_pcm) + continue; + + for_each_pcm_streams(dir) { + struct snd_pcm_substream *substream; + + substream = pcm->streams[dir].substream; + if (!substream || !substream->runtime) + continue; + + snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED); + } + } + } + mutex_unlock(&adev->comp_list_mutex); + + /* forcibly shutdown all cores */ + core_mask = GENMASK(adev->hw_cfg.dsp_cores - 1, 0); + avs_dsp_core_disable(adev, core_mask); + + /* attempt dsp reboot */ + ret = avs_dsp_boot_firmware(adev, true); + if (ret < 0) + dev_err(adev->dev, "firmware reboot failed: %d\n", ret); + + pm_runtime_mark_last_busy(adev->dev); + pm_runtime_enable(adev->dev); + pm_request_autosuspend(adev->dev); +} + +static void avs_dsp_recovery_work(struct work_struct *work) +{ + struct avs_ipc *ipc = container_of(work, struct avs_ipc, recovery_work); + + avs_dsp_recovery(to_avs_dev(ipc->dev)); +} + +static void avs_dsp_exception_caught(struct avs_dev *adev, union avs_notify_msg *msg) +{ + dev_crit(adev->dev, "communication severed, rebooting dsp..\n"); + + /* Re-enabled on recovery completion. */ + avs_ipc_block(adev->ipc); + pm_runtime_disable(adev->dev); + + /* Process received notification. */ + avs_dsp_op(adev, coredump, msg); + + schedule_work(&adev->ipc->recovery_work); +} + static void avs_dsp_receive_rx(struct avs_dev *adev, u64 header) { struct avs_ipc *ipc = adev->ipc; @@ -51,6 +123,9 @@ static void avs_dsp_process_notification(struct avs_dev *adev, u64 header) data_size = sizeof(struct avs_notify_res_data); break; + case AVS_NOTIFY_EXCEPTION_CAUGHT: + break; + case AVS_NOTIFY_MODULE_EVENT: memcpy_fromio(&mod_data, avs_uplink_addr(adev), sizeof(mod_data)); data_size = sizeof(mod_data) + mod_data.data_size; @@ -78,6 +153,10 @@ static void avs_dsp_process_notification(struct avs_dev *adev, u64 header) complete(&adev->fw_ready); break; + case AVS_NOTIFY_EXCEPTION_CAUGHT: + avs_dsp_exception_caught(adev, &msg); + break; + default: break; } @@ -264,10 +343,10 @@ static int avs_dsp_do_send_msg(struct avs_dev *adev, struct avs_ipc_msg *request ret = avs_ipc_wait_busy_completion(ipc, timeout); if (ret) { if (ret == -ETIMEDOUT) { - dev_crit(adev->dev, "communication severed: %d, rebooting dsp..\n", - ret); + union avs_notify_msg msg = AVS_NOTIFICATION(EXCEPTION_CAUGHT); - avs_ipc_block(ipc); + /* Same treatment as on exception, just stack_dump=0. */ + avs_dsp_exception_caught(adev, &msg); } goto exit; } @@ -389,6 +468,7 @@ int avs_ipc_init(struct avs_ipc *ipc, struct device *dev) ipc->dev = dev; ipc->ready = false; ipc->default_timeout_ms = AVS_IPC_TIMEOUT_MS; + INIT_WORK(&ipc->recovery_work, avs_dsp_recovery_work); init_completion(&ipc->done_completion); init_completion(&ipc->busy_completion); spin_lock_init(&ipc->rx_lock); @@ -400,4 +480,5 @@ int avs_ipc_init(struct avs_ipc *ipc, struct device *dev) void avs_ipc_block(struct avs_ipc *ipc) { ipc->ready = false; + cancel_work_sync(&ipc->recovery_work); } diff --git a/sound/soc/intel/avs/messages.h b/sound/soc/intel/avs/messages.h index a79aadba161d..f289c3498096 100644 --- a/sound/soc/intel/avs/messages.h +++ b/sound/soc/intel/avs/messages.h @@ -192,6 +192,7 @@ enum avs_notify_msg_type { AVS_NOTIFY_PHRASE_DETECTED = 4, AVS_NOTIFY_RESOURCE_EVENT = 5, AVS_NOTIFY_FW_READY = 8, + AVS_NOTIFY_EXCEPTION_CAUGHT = 10, AVS_NOTIFY_MODULE_EVENT = 12, }; @@ -210,6 +211,10 @@ union avs_notify_msg { }; union { u32 val; + struct { + u32 core_id:2; + u32 stack_dump_size:16; + } coredump; } ext; }; } __packed; -- 2.25.1