From patchwork Mon Nov 30 05:36:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dikshita Agarwal X-Patchwork-Id: 11939703 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 44E6EC63777 for ; Mon, 30 Nov 2020 05:37:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 02CDA2074A for ; Mon, 30 Nov 2020 05:37:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725902AbgK3FhM (ORCPT ); Mon, 30 Nov 2020 00:37:12 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:31683 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbgK3FhM (ORCPT ); Mon, 30 Nov 2020 00:37:12 -0500 Received: from ironmsg07-lv.qualcomm.com (HELO ironmsg07-lv.qulacomm.com) ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 29 Nov 2020 21:36:31 -0800 X-QCInternal: smtphost Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg07-lv.qulacomm.com with ESMTP/TLS/AES256-SHA; 29 Nov 2020 21:36:30 -0800 X-QCInternal: smtphost Received: from dikshita-linux.qualcomm.com ([10.204.65.237]) by ironmsg02-blr.qualcomm.com with ESMTP; 30 Nov 2020 11:06:16 +0530 Received: by dikshita-linux.qualcomm.com (Postfix, from userid 347544) id B3AB62128A; Mon, 30 Nov 2020 11:06:15 +0530 (IST) From: Dikshita Agarwal To: linux-media@vger.kernel.org, stanimir.varbanov@linaro.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, vgarodia@codeaurora.org, Dikshita Agarwal Subject: [PATCH] venus: core: add support to dump FW region Date: Mon, 30 Nov 2020 11:06:12 +0530 Message-Id: <1606714572-1113-1-git-send-email-dikshita@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add support to dump video FW region during FW crash using devcoredump helpers. Signed-off-by: Dikshita Agarwal --- drivers/media/platform/qcom/venus/core.c | 47 ++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 6103aaf..01a0cfe 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -7,8 +7,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -22,6 +24,48 @@ #include "firmware.h" #include "pm_helpers.h" +static int subsystem_dump(struct venus_core *core) +{ + struct device_node *node; + struct device *dev; + struct resource r; + void *mem_va; + size_t mem_size; + void *data; + int ret; + + dev = core->dev; + node = of_parse_phandle(dev->of_node, "memory-region", 0); + if (!node) + return -EINVAL; + + ret = of_address_to_resource(node, 0, &r); + if (ret) + goto err_put_node; + + mem_size = resource_size(&r); + + mem_va = memremap(r.start, mem_size, MEMREMAP_WC); + if (!mem_va) { + ret = -ENOMEM; + goto err_put_node; + } + + data = vmalloc(mem_size); + if (!data) { + ret = -EINVAL; + goto err_unmap; + } + + memcpy(data, mem_va, mem_size); + + dev_coredumpv(dev, data, mem_size, GFP_KERNEL); +err_unmap: + memunmap(mem_va); +err_put_node: + of_node_put(node); + return ret; +} static void venus_event_notify(struct venus_core *core, u32 event) { struct venus_inst *inst; @@ -67,6 +111,9 @@ static void venus_sys_error_handler(struct work_struct *work) venus_shutdown(core); + dev_warn(core->dev, "dumping FW region!\n"); + subsystem_dump(core); + pm_runtime_put_sync(core->dev); while (core->pmdomains[0] && pm_runtime_active(core->pmdomains[0]))