From patchwork Thu Jun 16 11:02:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dikshita Agarwal X-Patchwork-Id: 12883728 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 464CBCCA47A for ; Thu, 16 Jun 2022 11:02:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230100AbiFPLCT (ORCPT ); Thu, 16 Jun 2022 07:02:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229663AbiFPLCT (ORCPT ); Thu, 16 Jun 2022 07:02:19 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AA825DD09; Thu, 16 Jun 2022 04:02:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1655377338; x=1686913338; h=from:to:cc:subject:date:message-id; bh=7g/s2GiM6jmBG+/eoD9DO8AkGUDJbrWKyYBTl86tXM8=; b=GoRfAYxQIsAF6IBFIoyn5iU3xBjcM3SqhJ9A5MWbSCdgSecU/d8Qjaak cqPm1Y1EV18zRYD7sYV/Jg59L4sZxtemK1lBoRZPcvp5ZC1nxrN3OWMxf yKyw905tUa9vWOiiioLDZ6+Uk9TKumH4H2fy63HdyZuWcfaBOX0knVcQ/ I=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 16 Jun 2022 04:02:18 -0700 X-QCInternal: smtphost Received: from ironmsg01-blr.qualcomm.com ([10.86.208.130]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/AES256-SHA; 16 Jun 2022 04:02:15 -0700 X-QCInternal: smtphost Received: from hu-dikshita-hyd.qualcomm.com (HELO hu-sgudaval-hyd.qualcomm.com) ([10.213.110.13]) by ironmsg01-blr.qualcomm.com with ESMTP; 16 Jun 2022 16:32:05 +0530 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 347544) id 842E2460E; Thu, 16 Jun 2022 16:32:04 +0530 (+0530) From: Dikshita Agarwal To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, stanimir.varbanov@linaro.org, quic_vgarodia@quicinc.com, swboyd@chromium.org, Dikshita Agarwal Subject: [PATCH v3] venus: Add support for SSR trigger using fault injection Date: Thu, 16 Jun 2022 16:32:02 +0530 Message-Id: <1655377322-14195-1-git-send-email-quic_dikshita@quicinc.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Here we introduce a new fault injection for SSR trigger. To trigger the SSR: echo 100 > /sys/kernel/debug/venus/fail_ssr/probability echo 1 > /sys/kernel/debug/venus/fail_ssr/times Co-developed-by: Stanimir Varbanov signed-off-by: Dikshita Agarwal Signed-off-by: Stanimir Varbanov Reviewed-by: Stephen Boyd --- drivers/media/platform/qcom/venus/core.c | 15 ++++++++++++++- drivers/media/platform/qcom/venus/dbgfs.c | 9 +++++++++ drivers/media/platform/qcom/venus/dbgfs.h | 13 +++++++++++++ 3 files changed, 36 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 877eca1..abfa5d6 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -265,6 +265,19 @@ static void venus_assign_register_offsets(struct venus_core *core) } } +static irqreturn_t venus_isr_thread(int irq, void *dev_id) +{ + struct venus_core *core = dev_id; + irqreturn_t ret; + + ret = hfi_isr_thread(irq, dev_id); + + if (ret == IRQ_HANDLED && venus_fault_inject_ssr()) + hfi_core_trigger_ssr(core, HFI_TEST_SSR_SW_ERR_FATAL); + + return ret; +} + static int venus_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -320,7 +333,7 @@ static int venus_probe(struct platform_device *pdev) INIT_DELAYED_WORK(&core->work, venus_sys_error_handler); init_waitqueue_head(&core->sys_err_done); - ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, hfi_isr_thread, + ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, venus_isr_thread, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "venus", core); if (ret) diff --git a/drivers/media/platform/qcom/venus/dbgfs.c b/drivers/media/platform/qcom/venus/dbgfs.c index 52de47f..726f4b7 100644 --- a/drivers/media/platform/qcom/venus/dbgfs.c +++ b/drivers/media/platform/qcom/venus/dbgfs.c @@ -4,13 +4,22 @@ */ #include +#include #include "core.h" +#ifdef CONFIG_FAULT_INJECTION +DECLARE_FAULT_ATTR(venus_ssr_attr); +#endif + 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); + +#ifdef CONFIG_FAULT_INJECTION + fault_create_debugfs_attr("fail_ssr", core->root, &venus_ssr_attr); +#endif } void venus_dbgfs_deinit(struct venus_core *core) diff --git a/drivers/media/platform/qcom/venus/dbgfs.h b/drivers/media/platform/qcom/venus/dbgfs.h index b7b621a..c87c135 100644 --- a/drivers/media/platform/qcom/venus/dbgfs.h +++ b/drivers/media/platform/qcom/venus/dbgfs.h @@ -4,8 +4,21 @@ #ifndef __VENUS_DBGFS_H__ #define __VENUS_DBGFS_H__ +#include + struct venus_core; +#ifdef CONFIG_FAULT_INJECTION +extern struct fault_attr venus_ssr_attr; +static inline bool venus_fault_inject_ssr(void) +{ + return should_fail(&venus_ssr_attr, 1); +} +#else +static inline bool venus_fault_inject_ssr(void) { return false; } +#endif + + void venus_dbgfs_init(struct venus_core *core); void venus_dbgfs_deinit(struct venus_core *core);