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 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 EFD27F34C52 for ; Mon, 13 Apr 2026 13:32:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B804E10E455; Mon, 13 Apr 2026 13:32:55 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="JlQ1x4pD"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6B46C10E455; Mon, 13 Apr 2026 13:32:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776087175; x=1807623175; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kq6Gkw/8QZBEQa3KLO4uX00J2JXASuixfjJSwcN8r1M=; b=JlQ1x4pDVPiShj/E0UxLrRrxwhJCc3CULxfetbf8wNSP8QJEYPhUX1Pu LhQcWh9hTr7B6SSqnxZtzeb0zPc+c9wV6rFfAlaMWusaWC5QE0pgzflV+ cx5/Rc8JXqDOTNQ0/fytxbg5j4Qr+otZYqRjJIt3Yjo1WPEWrtfNK5UFm /F4EI8azjxHXKf2wjB8iCauzRT62KZtGqDXssKjfKleYW6XJ3j8skBQj0 XDKWCriXljONSFf4MhWcrN2LTf2F8gf058UGup0C/Bdm9UzzOrbhHzrrN cr6+pClP4NgLr1nvzaJCs1wO+FE+ASRjoFYJQpMZfV4gKCYNN5/zHe276 w==; X-CSE-ConnectionGUID: 1Oyz/PX2Ta+DnGiORsifcw== X-CSE-MsgGUID: oJmrRm98RKisza4u1RSXmw== X-IronPort-AV: E=McAfee;i="6800,10657,11758"; a="94594673" X-IronPort-AV: E=Sophos;i="6.23,177,1770624000"; d="scan'208";a="94594673" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2026 06:32:54 -0700 X-CSE-ConnectionGUID: iQ6Wrf2rR3e4+HmD7aCFkQ== X-CSE-MsgGUID: 5jiWQQ6QSAqo6wEtlrE+dg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,177,1770624000"; d="scan'208";a="229659660" Received: from jraag-z790m-itx-wifi.iind.intel.com ([10.190.239.23]) by orviesa009.jf.intel.com with ESMTP; 13 Apr 2026 06:32:50 -0700 From: Mallesh Koujalagi To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, rodrigo.vivi@intel.com Cc: andrealmeid@igalia.com, christian.koenig@amd.com, airlied@gmail.com, simona.vetter@ffwll.ch, mripard@kernel.org, anshuman.gupta@intel.com, badal.nilawar@intel.com, riana.tauro@intel.com, karthik.poosa@intel.com, sk.anirban@intel.com, raag.jadav@intel.com, Mallesh Koujalagi Subject: [PATCH v4 2/4] drm: Add DRM_WEDGE_RECOVERY_COLD_RESET recovery method Date: Mon, 13 Apr 2026 19:00:16 +0530 Message-ID: <20260413133013.560239-8-mallesh.koujalagi@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260413133013.560239-6-mallesh.koujalagi@intel.com> References: <20260413133013.560239-6-mallesh.koujalagi@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Introduce DRM_WEDGE_RECOVERY_COLD_RESET (BIT(4)) recovery method to handle scenarios requiring device power cycle. This method addresses cases where other recovery mechanisms (driver reload, PCIe reset, etc.) are insufficient to restore device functionality. When set, it indicates to userspace that only device power cycle can recover the device from its current error state. The cold reset method serves as a last resort when all other recovery options have been exhausted. v3: - Update any scenario that requires cold-reset. (Riana) v4: - Rename cold reset to power cyclce. (Raag) Signed-off-by: Mallesh Koujalagi --- drivers/gpu/drm/drm_drv.c | 2 ++ include/drm/drm_device.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 985c283cf59f..8c0236e2e6a6 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -535,6 +535,8 @@ static const char *drm_get_wedge_recovery(unsigned int opt) return "bus-reset"; case DRM_WEDGE_RECOVERY_VENDOR: return "vendor-specific"; + case DRM_WEDGE_RECOVERY_COLD_RESET: + return "cold-reset"; default: return NULL; } diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index bc78fb77cc27..3e386eb42023 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -37,6 +37,7 @@ struct pci_controller; #define DRM_WEDGE_RECOVERY_REBIND BIT(1) /* unbind + bind driver */ #define DRM_WEDGE_RECOVERY_BUS_RESET BIT(2) /* unbind + reset bus device + bind */ #define DRM_WEDGE_RECOVERY_VENDOR BIT(3) /* vendor specific recovery method */ +#define DRM_WEDGE_RECOVERY_COLD_RESET BIT(4) /* full device cold reset */ /** * struct drm_wedge_task_info - information about the guilty task of a wedge dev -- 2.34.1