From patchwork Thu Nov 5 04:50:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 319426 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4BA4C5517A for ; Thu, 5 Nov 2020 04:50:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8013A2083B for ; Thu, 5 Nov 2020 04:50:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="tiU9APlP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730941AbgKEEup (ORCPT ); Wed, 4 Nov 2020 23:50:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38934 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726214AbgKEEue (ORCPT ); Wed, 4 Nov 2020 23:50:34 -0500 Received: from mail-ot1-x344.google.com (mail-ot1-x344.google.com [IPv6:2607:f8b0:4864:20::344]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D9C4C0613D6 for ; Wed, 4 Nov 2020 20:50:32 -0800 (PST) Received: by mail-ot1-x344.google.com with SMTP id j14so296308ots.1 for ; Wed, 04 Nov 2020 20:50:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=FvjwOA4E4EU4uWdZHjmur5yZGUS7qBISeC6b1M+D3zM=; b=tiU9APlPLOoAxUJp76XWPjX0w6Bzx0nGeeJFMUVVCicmATSCu0ouGOStpsm7KH2jwB K7hHvMnRwOoRvfihBotW5GprFltQEStY9Jfm7q+4st4EWnGOTU73Jx2M75hpCfe5Hr6L MF83qfpHNGdRLhGlFU2btE7KJchSHqtEQa3AjnqgjvJB3lQJ/zMbDsXJahAIUwoGiciE Ht1H91HmQnTJG7/5Vos+NVVvdPLXNllP3efOkrwybSR/pIyClUEMvO6FANa7IFG0sKWz 60dlWyzlKq+eLg2Wbu4oJqMqTyOdVtDlFW3Pdc/Dsc5Y6Golc1qyTigYMINObZ1xh4fq WFHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=FvjwOA4E4EU4uWdZHjmur5yZGUS7qBISeC6b1M+D3zM=; b=E83ru0weWqUQQnFZtGivnyuchoFlTTSLYHJuBgnYukePC7zTihF1Z4sg3fHpVYfKVt 12qf5RSKNcYWSP5EmUWBWyGhpPacCD1ySLodacjwdzhMPgIoKQ10yzpdZtxdwyCDJwPo VE+CDt987ddudrgmA0DwNdbor89MsZ/iiW7ga1r6qDIa5xIoMcpc07EWTxDHNghsoy1d 6/jCMCvXzCYRm7tpgNQrFRvDVrRfbhRWJTX/qMOhePNkr61mqd1wABEhKCFnDSbDEWX6 TwJnjbuSMxx6XL4pavkOMf+UDV1z8w9cfqKbxsv+X0QYw2gYgoiLfmBdVDnOnwIAjURA NSPA== X-Gm-Message-State: AOAM533ORzGAEfmm+NLndBFLS9fIDN7EzjYmsg1WxwF49vjBJbl2VN6B I1zOoqQ3sQi1cyU/NnqiGi2MSw== X-Google-Smtp-Source: ABdhPJy+pHmn9uCABK0hmaSx7N/RXjSjED1Z0kRvX70fzCNGwChVT6aF6Wa70HEsQOk6oZmoejz7gA== X-Received: by 2002:a9d:60d:: with SMTP id 13mr468308otn.366.1604551831750; Wed, 04 Nov 2020 20:50:31 -0800 (PST) Received: from localhost.localdomain (104-57-184-186.lightspeed.austtx.sbcglobal.net. [104.57.184.186]) by smtp.gmail.com with ESMTPSA id k13sm100553ooi.41.2020.11.04.20.50.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 20:50:31 -0800 (PST) From: Bjorn Andersson To: Andy Gross , Bjorn Andersson , Ohad Ben-Cohen , Siddharth Gupta , Sibi Sankar Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH v2 1/4] remoteproc: sysmon: Ensure remote notification ordering Date: Wed, 4 Nov 2020 20:50:48 -0800 Message-Id: <20201105045051.1365780-2-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201105045051.1365780-1-bjorn.andersson@linaro.org> References: <20201105045051.1365780-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The reliance on the remoteproc's state for determining when to send sysmon notifications to a remote processor is racy with regard to concurrent remoteproc operations. Further more the advertisement of the state of other remote processor to a newly started remote processor might not only send the wrong state, but might result in a stream of state changes that are out of order. Address this by introducing state tracking within the sysmon instances themselves and extend the locking to ensure that the notifications are consistent with this state. Fixes: 1f36ab3f6e3b ("remoteproc: sysmon: Inform current rproc about all active rprocs") Fixes: 1877f54f75ad ("remoteproc: sysmon: Add notifications for events") Fixes: 1fb82ee806d1 ("remoteproc: qcom: Introduce sysmon") Cc: stable@vger.kernel.org Signed-off-by: Bjorn Andersson --- Changes since v1: - Reduced the locking to be per sysmon instance - Dropped unused local "rproc" variable in sysmon_notify() drivers/remoteproc/qcom_sysmon.c | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/remoteproc/qcom_sysmon.c b/drivers/remoteproc/qcom_sysmon.c index 9eb2f6bccea6..38f63c968fa8 100644 --- a/drivers/remoteproc/qcom_sysmon.c +++ b/drivers/remoteproc/qcom_sysmon.c @@ -22,6 +22,9 @@ struct qcom_sysmon { struct rproc_subdev subdev; struct rproc *rproc; + int state; + struct mutex state_lock; + struct list_head node; const char *name; @@ -448,7 +451,10 @@ static int sysmon_prepare(struct rproc_subdev *subdev) .ssr_event = SSCTL_SSR_EVENT_BEFORE_POWERUP }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_BEFORE_POWERUP; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); return 0; } @@ -472,22 +478,25 @@ static int sysmon_start(struct rproc_subdev *subdev) .ssr_event = SSCTL_SSR_EVENT_AFTER_POWERUP }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_AFTER_POWERUP; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); - mutex_lock(&sysmon_lock); list_for_each_entry(target, &sysmon_list, node) { - if (target == sysmon || - target->rproc->state != RPROC_RUNNING) + if (target == sysmon) continue; + mutex_lock(&target->state_lock); event.subsys_name = target->name; + event.ssr_event = target->state; if (sysmon->ssctl_version == 2) ssctl_send_event(sysmon, &event); else if (sysmon->ept) sysmon_send_event(sysmon, &event); + mutex_unlock(&target->state_lock); } - mutex_unlock(&sysmon_lock); return 0; } @@ -500,7 +509,10 @@ static void sysmon_stop(struct rproc_subdev *subdev, bool crashed) .ssr_event = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); /* Don't request graceful shutdown if we've crashed */ if (crashed) @@ -521,7 +533,10 @@ static void sysmon_unprepare(struct rproc_subdev *subdev) .ssr_event = SSCTL_SSR_EVENT_AFTER_SHUTDOWN }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_AFTER_SHUTDOWN; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); } /** @@ -534,11 +549,10 @@ static int sysmon_notify(struct notifier_block *nb, unsigned long event, void *data) { struct qcom_sysmon *sysmon = container_of(nb, struct qcom_sysmon, nb); - struct rproc *rproc = sysmon->rproc; struct sysmon_event *sysmon_event = data; /* Skip non-running rprocs and the originating instance */ - if (rproc->state != RPROC_RUNNING || + if (sysmon->state != SSCTL_SSR_EVENT_AFTER_POWERUP || !strcmp(sysmon_event->subsys_name, sysmon->name)) { dev_dbg(sysmon->dev, "not notifying %s\n", sysmon->name); return NOTIFY_DONE; @@ -591,6 +605,7 @@ struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, init_completion(&sysmon->ind_comp); init_completion(&sysmon->shutdown_comp); mutex_init(&sysmon->lock); + mutex_init(&sysmon->state_lock); sysmon->shutdown_irq = of_irq_get_byname(sysmon->dev->of_node, "shutdown-ack"); From patchwork Thu Nov 5 04:50:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 317906 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69792C55179 for ; 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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id k13sm100553ooi.41.2020.11.04.20.50.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 20:50:32 -0800 (PST) From: Bjorn Andersson To: Andy Gross , Bjorn Andersson , Ohad Ben-Cohen , Siddharth Gupta , Sibi Sankar Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] remoteproc: sysmon: Expose the shutdown result Date: Wed, 4 Nov 2020 20:50:49 -0800 Message-Id: <20201105045051.1365780-3-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201105045051.1365780-1-bjorn.andersson@linaro.org> References: <20201105045051.1365780-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org A graceful shutdown of the Qualcomm remote processors where traditionally performed by invoking a shared memory state signal and waiting for the associated ack. This was later superseded by the "sysmon" mechanism, where some form of shared memory bus is used to send a "graceful shutdown request" message and one of more signals comes back to indicate its success. But when this newer mechanism is in effect the firmware is shut down by the time the older mechanism, implemented in the remoteproc drivers, attempts to perform a graceful shutdown - and as such it will never receive an ack back. This patch therefor track the success of the latest shutdown attempt in sysmon and exposes a new function in the API that the remoteproc driver can use to query the success and the necessity of invoking the older mechanism. Signed-off-by: Bjorn Andersson Reviewed-by: Rishabh Bhatnagar --- Changes since v1: - New patch drivers/remoteproc/qcom_common.h | 6 +++ drivers/remoteproc/qcom_sysmon.c | 82 ++++++++++++++++++++++++-------- 2 files changed, 69 insertions(+), 19 deletions(-) diff --git a/drivers/remoteproc/qcom_common.h b/drivers/remoteproc/qcom_common.h index dfc641c3a98b..8ba9052955bd 100644 --- a/drivers/remoteproc/qcom_common.h +++ b/drivers/remoteproc/qcom_common.h @@ -51,6 +51,7 @@ struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, const char *name, int ssctl_instance); void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon); +bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon); #else static inline struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, const char *name, @@ -62,6 +63,11 @@ static inline struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, static inline void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon) { } + +static inline bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon) +{ + return false; +} #endif #endif diff --git a/drivers/remoteproc/qcom_sysmon.c b/drivers/remoteproc/qcom_sysmon.c index 38f63c968fa8..1c42f00010d3 100644 --- a/drivers/remoteproc/qcom_sysmon.c +++ b/drivers/remoteproc/qcom_sysmon.c @@ -44,6 +44,7 @@ struct qcom_sysmon { struct mutex lock; bool ssr_ack; + bool shutdown_acked; struct qmi_handle qmi; struct sockaddr_qrtr ssctl; @@ -115,10 +116,13 @@ static void sysmon_send_event(struct qcom_sysmon *sysmon, /** * sysmon_request_shutdown() - request graceful shutdown of remote * @sysmon: sysmon context + * + * Return: boolean indicator of the remote processor acking the request */ -static void sysmon_request_shutdown(struct qcom_sysmon *sysmon) +static bool sysmon_request_shutdown(struct qcom_sysmon *sysmon) { char *req = "ssr:shutdown"; + bool acked = false; int ret; mutex_lock(&sysmon->lock); @@ -141,9 +145,13 @@ static void sysmon_request_shutdown(struct qcom_sysmon *sysmon) if (!sysmon->ssr_ack) dev_err(sysmon->dev, "unexpected response to sysmon shutdown request\n"); + else + acked = true; out_unlock: mutex_unlock(&sysmon->lock); + + return acked; } static int sysmon_callback(struct rpmsg_device *rpdev, void *data, int count, @@ -297,14 +305,33 @@ static struct qmi_msg_handler qmi_indication_handler[] = { {} }; +static bool ssctl_request_shutdown_wait(struct qcom_sysmon *sysmon) +{ + int ret; + + ret = wait_for_completion_timeout(&sysmon->shutdown_comp, 10 * HZ); + if (ret) + return true; + + ret = try_wait_for_completion(&sysmon->ind_comp); + if (ret) + return true; + + dev_err(sysmon->dev, "timeout waiting for shutdown ack\n"); + return false; +} + /** * ssctl_request_shutdown() - request shutdown via SSCTL QMI service * @sysmon: sysmon context + * + * Return: boolean indicator of the remote processor acking the request */ -static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) +static bool ssctl_request_shutdown(struct qcom_sysmon *sysmon) { struct ssctl_shutdown_resp resp; struct qmi_txn txn; + bool acked = false; int ret; reinit_completion(&sysmon->ind_comp); @@ -312,7 +339,7 @@ static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) ret = qmi_txn_init(&sysmon->qmi, &txn, ssctl_shutdown_resp_ei, &resp); if (ret < 0) { dev_err(sysmon->dev, "failed to allocate QMI txn\n"); - return; + return false; } ret = qmi_send_request(&sysmon->qmi, &sysmon->ssctl, &txn, @@ -320,27 +347,23 @@ static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) if (ret < 0) { dev_err(sysmon->dev, "failed to send shutdown request\n"); qmi_txn_cancel(&txn); - return; + return false; } ret = qmi_txn_wait(&txn, 5 * HZ); - if (ret < 0) + if (ret < 0) { dev_err(sysmon->dev, "failed receiving QMI response\n"); - else if (resp.resp.result) + } else if (resp.resp.result) { dev_err(sysmon->dev, "shutdown request failed\n"); - else + } else { dev_dbg(sysmon->dev, "shutdown request completed\n"); - - if (sysmon->shutdown_irq > 0) { - ret = wait_for_completion_timeout(&sysmon->shutdown_comp, - 10 * HZ); - if (!ret) { - ret = try_wait_for_completion(&sysmon->ind_comp); - if (!ret) - dev_err(sysmon->dev, - "timeout waiting for shutdown ack\n"); - } + acked = true; } + + if (sysmon->shutdown_irq > 0) + return ssctl_request_shutdown_wait(sysmon); + + return acked; } /** @@ -508,6 +531,9 @@ static void sysmon_stop(struct rproc_subdev *subdev, bool crashed) .subsys_name = sysmon->name, .ssr_event = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN }; + bool acked; + + sysmon->shutdown_acked = false; mutex_lock(&sysmon->state_lock); sysmon->state = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN; @@ -519,9 +545,11 @@ static void sysmon_stop(struct rproc_subdev *subdev, bool crashed) return; if (sysmon->ssctl_version) - ssctl_request_shutdown(sysmon); + acked = ssctl_request_shutdown(sysmon); else if (sysmon->ept) - sysmon_request_shutdown(sysmon); + acked = sysmon_request_shutdown(sysmon); + + sysmon->shutdown_acked = acked; } static void sysmon_unprepare(struct rproc_subdev *subdev) @@ -679,6 +707,22 @@ void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon) } EXPORT_SYMBOL_GPL(qcom_remove_sysmon_subdev); +/** + * qcom_sysmon_shutdown_acked() - query the success of the last shutdown + * @sysmon: sysmon context + * + * When sysmon is used to request a graceful shutdown of the remote processor + * this can be used by the remoteproc driver to query the success, in order to + * know if it should fall back to other means of requesting a shutdown. + * + * Return: boolean indicator of the success of the last shutdown request + */ +bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon) +{ + return sysmon && sysmon->shutdown_acked; +} +EXPORT_SYMBOL_GPL(qcom_sysmon_shutdown_acked); + /** * sysmon_probe() - probe sys_mon channel * @rpdev: rpmsg device handle From patchwork Thu Nov 5 04:50:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 317907 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BB47C388F9 for ; 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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id k13sm100553ooi.41.2020.11.04.20.50.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 20:50:33 -0800 (PST) From: Bjorn Andersson To: Andy Gross , Bjorn Andersson , Ohad Ben-Cohen , Siddharth Gupta , Sibi Sankar Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/4] remoteproc: qcom: q6v5: Query sysmon before graceful shutdown Date: Wed, 4 Nov 2020 20:50:50 -0800 Message-Id: <20201105045051.1365780-4-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201105045051.1365780-1-bjorn.andersson@linaro.org> References: <20201105045051.1365780-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Requesting a graceful shutdown through the shared memory state signals will not be acked in the event that sysmon has already successfully shut down the remote firmware. So extend the stop request API to optinally take the remoteproc's sysmon instance and query if there's already been a successful shutdown attempt, before doing the signal dance. Signed-off-by: Bjorn Andersson Reviewed-by: Rishabh Bhatnagar --- Changes since v1: - New patch drivers/remoteproc/qcom_q6v5.c | 8 +++++++- drivers/remoteproc/qcom_q6v5.h | 3 ++- drivers/remoteproc/qcom_q6v5_adsp.c | 2 +- drivers/remoteproc/qcom_q6v5_mss.c | 2 +- drivers/remoteproc/qcom_q6v5_pas.c | 2 +- drivers/remoteproc/qcom_q6v5_wcss.c | 2 +- 6 files changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c index fd6fd36268d9..9627a950928e 100644 --- a/drivers/remoteproc/qcom_q6v5.c +++ b/drivers/remoteproc/qcom_q6v5.c @@ -13,6 +13,7 @@ #include #include #include +#include "qcom_common.h" #include "qcom_q6v5.h" #define Q6V5_PANIC_DELAY_MS 200 @@ -146,15 +147,20 @@ static irqreturn_t q6v5_stop_interrupt(int irq, void *data) /** * qcom_q6v5_request_stop() - request the remote processor to stop * @q6v5: reference to qcom_q6v5 context + * @sysmon: reference to the remote's sysmon instance, or NULL * * Return: 0 on success, negative errno on failure */ -int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5) +int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5, struct qcom_sysmon *sysmon) { int ret; q6v5->running = false; + /* Don't perform SMP2P dance if sysmon already shut down the remote */ + if (qcom_sysmon_shutdown_acked(sysmon)) + return 0; + qcom_smem_state_update_bits(q6v5->state, BIT(q6v5->stop_bit), BIT(q6v5->stop_bit)); diff --git a/drivers/remoteproc/qcom_q6v5.h b/drivers/remoteproc/qcom_q6v5.h index c4ed887c1499..1c212f670cbc 100644 --- a/drivers/remoteproc/qcom_q6v5.h +++ b/drivers/remoteproc/qcom_q6v5.h @@ -8,6 +8,7 @@ struct rproc; struct qcom_smem_state; +struct qcom_sysmon; struct qcom_q6v5 { struct device *dev; @@ -40,7 +41,7 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev, int qcom_q6v5_prepare(struct qcom_q6v5 *q6v5); int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5); -int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5); +int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5, struct qcom_sysmon *sysmon); int qcom_q6v5_wait_for_start(struct qcom_q6v5 *q6v5, int timeout); unsigned long qcom_q6v5_panic(struct qcom_q6v5 *q6v5); diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c index efb2c1aa80a3..9db0380236e7 100644 --- a/drivers/remoteproc/qcom_q6v5_adsp.c +++ b/drivers/remoteproc/qcom_q6v5_adsp.c @@ -264,7 +264,7 @@ static int adsp_stop(struct rproc *rproc) int handover; int ret; - ret = qcom_q6v5_request_stop(&adsp->q6v5); + ret = qcom_q6v5_request_stop(&adsp->q6v5, adsp->sysmon); if (ret == -ETIMEDOUT) dev_err(adsp->dev, "timed out on wait\n"); diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index 9a473cfef758..501764934014 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -1370,7 +1370,7 @@ static int q6v5_stop(struct rproc *rproc) struct q6v5 *qproc = (struct q6v5 *)rproc->priv; int ret; - ret = qcom_q6v5_request_stop(&qproc->q6v5); + ret = qcom_q6v5_request_stop(&qproc->q6v5, qproc->sysmon); if (ret == -ETIMEDOUT) dev_err(qproc->dev, "timed out on wait\n"); diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c index 3837f23995e0..ed1772bfa55d 100644 --- a/drivers/remoteproc/qcom_q6v5_pas.c +++ b/drivers/remoteproc/qcom_q6v5_pas.c @@ -214,7 +214,7 @@ static int adsp_stop(struct rproc *rproc) int handover; int ret; - ret = qcom_q6v5_request_stop(&adsp->q6v5); + ret = qcom_q6v5_request_stop(&adsp->q6v5, adsp->sysmon); if (ret == -ETIMEDOUT) dev_err(adsp->dev, "timed out on wait\n"); diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c index 8846ef0b0f1a..d6639856069b 100644 --- a/drivers/remoteproc/qcom_q6v5_wcss.c +++ b/drivers/remoteproc/qcom_q6v5_wcss.c @@ -390,7 +390,7 @@ static int q6v5_wcss_stop(struct rproc *rproc) int ret; /* WCSS powerdown */ - ret = qcom_q6v5_request_stop(&wcss->q6v5); + ret = qcom_q6v5_request_stop(&wcss->q6v5, wcss->sysmon); if (ret == -ETIMEDOUT) { dev_err(wcss->dev, "timed out on wait\n"); return ret; From patchwork Thu Nov 5 04:50:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 319427 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0017C00A89 for ; 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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id k13sm100553ooi.41.2020.11.04.20.50.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 20:50:34 -0800 (PST) From: Bjorn Andersson To: Andy Gross , Bjorn Andersson , Ohad Ben-Cohen , Siddharth Gupta , Sibi Sankar Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/4] remoteproc: sysmon: Improve error messages Date: Wed, 4 Nov 2020 20:50:51 -0800 Message-Id: <20201105045051.1365780-5-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201105045051.1365780-1-bjorn.andersson@linaro.org> References: <20201105045051.1365780-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Improve the style of a few of the error messages printed by the sysmon implementation and fix the copy-pasted shutdown error in the send-event function. Signed-off-by: Bjorn Andersson Reviewed-by: Rishabh Bhatnagar --- Changes since v1: - New patch drivers/remoteproc/qcom_sysmon.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/remoteproc/qcom_sysmon.c b/drivers/remoteproc/qcom_sysmon.c index 1c42f00010d3..47683932512a 100644 --- a/drivers/remoteproc/qcom_sysmon.c +++ b/drivers/remoteproc/qcom_sysmon.c @@ -352,9 +352,9 @@ static bool ssctl_request_shutdown(struct qcom_sysmon *sysmon) ret = qmi_txn_wait(&txn, 5 * HZ); if (ret < 0) { - dev_err(sysmon->dev, "failed receiving QMI response\n"); + dev_err(sysmon->dev, "timeout waiting for shutdown response\n"); } else if (resp.resp.result) { - dev_err(sysmon->dev, "shutdown request failed\n"); + dev_err(sysmon->dev, "shutdown request rejected\n"); } else { dev_dbg(sysmon->dev, "shutdown request completed\n"); acked = true; @@ -397,18 +397,18 @@ static void ssctl_send_event(struct qcom_sysmon *sysmon, SSCTL_SUBSYS_EVENT_REQ, 40, ssctl_subsys_event_req_ei, &req); if (ret < 0) { - dev_err(sysmon->dev, "failed to send shutdown request\n"); + dev_err(sysmon->dev, "failed to send subsystem event\n"); qmi_txn_cancel(&txn); return; } ret = qmi_txn_wait(&txn, 5 * HZ); if (ret < 0) - dev_err(sysmon->dev, "failed receiving QMI response\n"); + dev_err(sysmon->dev, "timeout waiting for subsystem event response\n"); else if (resp.resp.result) - dev_err(sysmon->dev, "ssr event send failed\n"); + dev_err(sysmon->dev, "subsystem event rejected\n"); else - dev_dbg(sysmon->dev, "ssr event send completed\n"); + dev_dbg(sysmon->dev, "subsystem event accepted\n"); } /**