From patchwork Tue Sep 17 04:02:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raag Jadav X-Patchwork-Id: 13805881 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 E62EDC3ABCB for ; Tue, 17 Sep 2024 04:03:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6B21310E406; Tue, 17 Sep 2024 04:03:40 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="dszERGC5"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1E92010E404; Tue, 17 Sep 2024 04:03:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1726545819; x=1758081819; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=DCYR0za9l8qE1OWNI2AHKrT5zsJWMR8uZ3p9q7rJ1t0=; b=dszERGC5I+0Y5JJKxos7CyNadk482S8g7GbumeWb8/bERCQIkjfmXtwT Qiqp8pegru6y+aWf8/x57aunOHL3jVrC3w96ZBzT1Zms0rV0KtoyWuAve OR6qycGG7KvHym47boRqv42oxa6S0InqsuwlDbaMuPlSMS6GVbVu+PE+d tpkzjeXolLAG5k5rDtWLPxObUqIqD3xNp+xgGikFJO0swGJhqHSiCtyNT jsCskUtDx1snnYuh5IzIk4J6RnNQ9Nxar4PZxBTmNdM39Tdr/xsMuQbQA N1u84bAdBrDhx4N6/67mVi1JkZLuOa94nJ8qFJfytRX2WlMsPfpKKttY/ g==; X-CSE-ConnectionGUID: i9RLQABARAO+hg5t1YDokg== X-CSE-MsgGUID: ohIIk7K3Szy5Dg68wNv1kw== X-IronPort-AV: E=McAfee;i="6700,10204,11197"; a="42865179" X-IronPort-AV: E=Sophos;i="6.10,234,1719903600"; d="scan'208";a="42865179" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2024 21:03:39 -0700 X-CSE-ConnectionGUID: lij/9bTJRUOKdO1bSJmiRA== X-CSE-MsgGUID: udCEXefpRwm9ukmAlVxqyQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,234,1719903600"; d="scan'208";a="69168599" Received: from jraag-nuc8i7beh.iind.intel.com ([10.145.169.79]) by fmviesa008.fm.intel.com with ESMTP; 16 Sep 2024 21:03:33 -0700 From: Raag Jadav To: airlied@gmail.com, simona@ffwll.ch, lucas.demarchi@intel.com, thomas.hellstrom@linux.intel.com, rodrigo.vivi@intel.com, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, tursulin@ursulin.net, lina@asahilina.net Cc: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, himal.prasad.ghimiray@intel.com, francois.dugast@intel.com, aravind.iddamsetty@linux.intel.com, anshuman.gupta@intel.com, andi.shyti@linux.intel.com, andriy.shevchenko@linux.intel.com, matthew.d.roper@intel.com, Raag Jadav Subject: [PATCH v5 3/4] drm/xe: Use device wedged event Date: Tue, 17 Sep 2024 09:32:34 +0530 Message-Id: <20240917040235.197019-4-raag.jadav@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240917040235.197019-1-raag.jadav@intel.com> References: <20240917040235.197019-1-raag.jadav@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This was previously attempted as xe specific reset uevent but dropped in commit 77a0d4d1cea2 ("drm/xe/uapi: Remove reset uevent for now") as part of refactoring. Now that we have device wedged event supported by DRM core, make use of it. With this in place userspace will be notified of wedged device, on the basis of which, userspace may take respective action to recover the device. $ udevadm monitor --property --kernel monitor will print the received events for: KERNEL - the kernel uevent KERNEL[265.802982] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:01.0/0000:03:00.0/drm/card0 (drm) ACTION=change DEVPATH=/devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:01.0/0000:03:00.0/drm/card0 SUBSYSTEM=drm WEDGED=bus-reset DEVNAME=/dev/dri/card0 DEVTYPE=drm_minor SEQNUM=5208 MAJOR=226 MINOR=0 v2: Change authorship to Himal (Aravind) Add uevent for all device wedged cases (Aravind) v3: Generic re-implementation in DRM subsystem (Lucas) v4: Change authorship to Raag (Aravind) Signed-off-by: Raag Jadav --- drivers/gpu/drm/xe/xe_device.c | 17 +++++++++++++++-- drivers/gpu/drm/xe/xe_device.h | 1 + drivers/gpu/drm/xe/xe_pci.c | 2 ++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 4d3c794f134c..1b097643aacb 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -780,6 +780,15 @@ int xe_device_probe(struct xe_device *xe) return err; } +void xe_setup_wedge_recovery(struct xe_device *xe) +{ + struct drm_device *dev = &xe->drm; + + /* Support both driver rebind and bus reset based recovery. */ + set_bit(DRM_WEDGE_RECOVERY_REBIND, &dev->wedge_recovery); + set_bit(DRM_WEDGE_RECOVERY_BUS_RESET, &dev->wedge_recovery); +} + static void xe_device_remove_display(struct xe_device *xe) { xe_display_unregister(xe); @@ -986,11 +995,12 @@ static void xe_device_wedged_fini(struct drm_device *drm, void *arg) * xe_device_declare_wedged - Declare device wedged * @xe: xe device instance * - * This is a final state that can only be cleared with a mudule + * This is a final state that can only be cleared with a module * re-probe (unbind + bind). * In this state every IOCTL will be blocked so the GT cannot be used. * In general it will be called upon any critical error such as gt reset - * failure or guc loading failure. + * failure or guc loading failure. Userspace will be notified of this state + * by a DRM uevent. * If xe.wedged module parameter is set to 2, this function will be called * on every single execution timeout (a.k.a. GPU hang) right after devcoredump * snapshot capture. In this mode, GT reset won't be attempted so the state of @@ -1020,6 +1030,9 @@ void xe_device_declare_wedged(struct xe_device *xe) "IOCTLs and executions are blocked. Only a rebind may clear the failure\n" "Please file a _new_ bug report at https://gitlab.freedesktop.org/drm/xe/kernel/issues/new\n", dev_name(xe->drm.dev)); + + /* Notify userspace of wedged device */ + drm_dev_wedged_event(&xe->drm, DRM_WEDGE_RECOVERY_BUS_RESET); } for_each_gt(gt, xe, id) diff --git a/drivers/gpu/drm/xe/xe_device.h b/drivers/gpu/drm/xe/xe_device.h index ca8d8ef6342b..77a2332b4b87 100644 --- a/drivers/gpu/drm/xe/xe_device.h +++ b/drivers/gpu/drm/xe/xe_device.h @@ -174,6 +174,7 @@ static inline bool xe_device_wedged(struct xe_device *xe) return atomic_read(&xe->wedged.flag); } +void xe_setup_wedge_recovery(struct xe_device *xe); void xe_device_declare_wedged(struct xe_device *xe); struct xe_file *xe_file_get(struct xe_file *xef); diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index a1d08e20cd34..60a8a60f1d9f 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -872,6 +872,8 @@ static int xe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) goto err_driver_cleanup; + xe_setup_wedge_recovery(xe); + drm_dbg(&xe->drm, "d3cold: capable=%s\n", str_yes_no(xe->d3cold.capable));