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 X-Spam-Level: X-Spam-Status: No, score=-13.1 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 C9526C433DF for ; Thu, 30 Jul 2020 09:54:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AAE852082E for ; Thu, 30 Jul 2020 09:54:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="LfvJup6o" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729392AbgG3Jyf (ORCPT ); Thu, 30 Jul 2020 05:54:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729137AbgG3Jye (ORCPT ); Thu, 30 Jul 2020 05:54:34 -0400 Received: from mail-wm1-x342.google.com (mail-wm1-x342.google.com [IPv6:2a00:1450:4864:20::342]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2947C0619D2 for ; Thu, 30 Jul 2020 02:54:33 -0700 (PDT) Received: by mail-wm1-x342.google.com with SMTP id 3so5626432wmi.1 for ; Thu, 30 Jul 2020 02:54:33 -0700 (PDT) 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; bh=AUdOHKBSFKpTj40WJgkPwcDzGagUihc/mu7zxNsYZ+k=; b=LfvJup6ovWiwAucvKZVQFk1CwI7buQN2T1r+dQ6oB6Y9OXRHdh2ia0LkWSZQm/HJGy 28edLScXxl/nFAygtX+andMgAEDNdZzl294AwcOdk34IoozNgT+1XTlfbcQHE0bTO1g5 6cmQV+vZo2eVuUx7lvUZ4zb9qHJvS/iMBf0ymbLFujgr46o9drobClO/VtKP6dnUFQ4w NnFIiKiXFJos9qfmi3OBbIROMi63tzS99nhh8SbMx7+I0J14pFLognQoy/3wpSlVjvAF mxHn5t0oEEAd9LDh6237j12wSQeZ0yvmlaJZ31q8hftrRcvypvmNNDv+Tq/SlsG0YXG2 L2EQ== 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; bh=AUdOHKBSFKpTj40WJgkPwcDzGagUihc/mu7zxNsYZ+k=; b=L6IkR5E43DCnityHJ1cJ5V8jsJ97mPkLwiU2mAedprf9VV1cRkQh4QDul+YwhtBiy9 THG3uksqw+AFLLtkND/AMZ8Ky7iSMjXTAlai0OqKkg+vSXVuZbfUlorsyeXelhDCDywz YV2yCXxbXg55kksdm6IcFOXck0FdyXUxal4bvLOS79tBiI6IW4BJvcjSm/0y8jexMwL3 ArTbki05uM2CP3w5Q9zstQzNxY6QN7ynZJ6wESu7Mszyov2cekU35jXkK6vZvwl6qG9x Hw9LtGtxgRr9B6h8M1uU8yAm2ADIXdjHr5LQUjDmCPZcayuAkcW0GTWhrUlcBodfVeCv HDvQ== X-Gm-Message-State: AOAM531MPxYswB24KyGknf/pnPleUt5SvYLeyoPCE8falOhxXCPPodfh DhyTWBj48cBIJ1bWVSSyaIKzaA== X-Google-Smtp-Source: ABdhPJxl+zAauMo/NwX8D0vz10uVpUP3IZ/MMYh5A3LnBT6RWGbY47iRI70Rr003qXL238CNARVaXw== X-Received: by 2002:a1c:5451:: with SMTP id p17mr13612609wmi.180.1596102872621; Thu, 30 Jul 2020 02:54:32 -0700 (PDT) Received: from localhost.localdomain ([195.24.90.54]) by smtp.gmail.com with ESMTPSA id u1sm10623139wrb.78.2020.07.30.02.54.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Jul 2020 02:54:32 -0700 (PDT) From: Stanimir Varbanov To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: jim.cromie@gmail.com, Joe Perches , Jason Baron , Greg Kroah-Hartman , Stanimir Varbanov Subject: [PATCH v5 2/3] venus: Add a debugfs file for SSR trigger Date: Thu, 30 Jul 2020 12:53:49 +0300 Message-Id: <20200730095350.13925-3-stanimir.varbanov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200730095350.13925-1-stanimir.varbanov@linaro.org> References: <20200730095350.13925-1-stanimir.varbanov@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The SSR (SubSystem Restart) is used to simulate an error on FW side of Venus. We support following type of triggers - fatal error, div by zero and watchdog IRQ. Signed-off-by: Stanimir Varbanov --- drivers/media/platform/qcom/venus/dbgfs.c | 30 +++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/media/platform/qcom/venus/dbgfs.c b/drivers/media/platform/qcom/venus/dbgfs.c index 782d54ac1b8f..f95b7b1febe5 100644 --- a/drivers/media/platform/qcom/venus/dbgfs.c +++ b/drivers/media/platform/qcom/venus/dbgfs.c @@ -9,10 +9,40 @@ extern int venus_fw_debug; +static int trigger_ssr_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t trigger_ssr_write(struct file *filp, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct venus_core *core = filp->private_data; + u32 ssr_type; + int ret; + + ret = kstrtou32_from_user(buf, count, 4, &ssr_type); + if (ret) + return ret; + + ret = hfi_core_trigger_ssr(core, ssr_type); + if (ret < 0) + return ret; + + return count; +} + +static const struct file_operations ssr_fops = { + .open = trigger_ssr_open, + .write = trigger_ssr_write, +}; + void venus_dbgfs_init(struct venus_core *core) { core->root = debugfs_create_dir("venus", NULL); debugfs_create_x32("fw_level", 0644, core->root, &venus_fw_debug); + debugfs_create_file("trigger_ssr", 0200, core->root, core, &ssr_fops); } void venus_dbgfs_deinit(struct venus_core *core) -- 2.17.1