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 109B2C5DF87 for ; Fri, 21 Aug 2026 11:25:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C3C5710E27D; Fri, 21 Aug 2026 11:25:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="LRt3Ruy5"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id A778210E27D for ; Fri, 21 Aug 2026 11:25:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1787311521; x=1818847521; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vy9IgueuNCzhG3Bp10ArNueSDqrNTZ5EhkCH0zSSh1c=; b=LRt3Ruy5Xn0poGAQ+Nye/xJBJ5epkNG1788m5zgQbEN57sqqzu2KjEW6 LCidB7ix5WBNXxG2JFUBmyyfn5Wo+chA0v1Ra3FZxvsEvBu/b6EVxI4od yGypaF6Qqc8dihWGznjbRM6hQqo8YWSb5GaPr+K21X/NYYPDn1DG1q4mW CyY5g4Ep6l8h/q2HLoYSBZ8cjTLrDvDi1DKCLziHNZeVblKTe6aTw39V7 0AX+aVAbzM7dQCA3O6mmbCMAx5cobMlFpNG18aUE8DR5GS1rExgdV5g/8 QxHTIsJcC+/ae0EkuzD/IPUNXwxEpNVCveOxMg/CN70FPUPx1B8LrttfY A==; X-CSE-ConnectionGUID: +mGtjfIxQae+U3nlBbPq2Q== X-CSE-MsgGUID: SJGBmC5tTo2k2JeHwW0czA== X-IronPort-AV: E=McAfee;i="6800,10657,11881"; a="90377526" X-IronPort-AV: E=Sophos;i="6.25,235,1779174000"; d="scan'208";a="90377526" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2026 04:25:21 -0700 X-CSE-ConnectionGUID: 0zZcLQTQRnCVrjo3VBHvig== X-CSE-MsgGUID: L3vSLRK2T9WsVAJc9ZWV+Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,235,1779174000"; d="scan'208";a="304523395" Received: from jraag-z790m-itx-wifi.iind.intel.com ([10.190.239.23]) by orviesa001.jf.intel.com with ESMTP; 21 Aug 2026 04:25:16 -0700 From: Raag Jadav To: intel-xe@lists.freedesktop.org Cc: matthew.brost@intel.com, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com, riana.tauro@intel.com, michal.wajdeczko@intel.com, matthew.d.roper@intel.com, michal.winiarski@intel.com, matthew.auld@intel.com, dev@lankhorst.se, jani.nikula@intel.com, lukasz.laguna@intel.com, lukas@wunner.de, daniele.ceraolospurio@intel.com, badal.nilawar@intel.com, Raag Jadav Subject: [PATCH v10 02/10] drm/xe/guc_submit: Introduce guc_exec_queue_reinit_kernel() Date: Fri, 21 Aug 2026 16:53:24 +0530 Message-ID: <20260821112436.545405-3-raag.jadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260821112436.545405-1-raag.jadav@intel.com> References: <20260821112436.545405-1-raag.jadav@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 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" In preparation of usecases which require re-initializing GuC submission after PCIe FLR, introduce guc_exec_queue_reinit_kernel() helper. This will restore kernel queues which might have been killed before PCIe FLR. Signed-off-by: Raag Jadav Tested-by: Lukasz Laguna Reviewed-by: Daniele Ceraolo Spurio --- v4: Teardown exec queues instead of mangling scheduler pending list (Matthew Brost) v5: Re-initialize kernel queues through submission backend (Matthew Brost) v8: Introduce xe_sched_reinit() (Daniele) Maintain timeout per scheduler instance (Daniele) s/reinit/reinit_kernel (Daniele) v9: Move drm_sched_is_stopped() assert to xe_sched_reinit() (Daniele) --- drivers/gpu/drm/xe/xe_exec_queue_types.h | 2 ++ drivers/gpu/drm/xe/xe_execlist.c | 6 ++++++ drivers/gpu/drm/xe/xe_gpu_scheduler.c | 17 +++++++++++++++++ drivers/gpu/drm/xe/xe_gpu_scheduler.h | 1 + drivers/gpu/drm/xe/xe_gpu_scheduler_types.h | 5 +++++ drivers/gpu/drm/xe/xe_guc_submit.c | 9 +++++++++ 6 files changed, 40 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_exec_queue_types.h b/drivers/gpu/drm/xe/xe_exec_queue_types.h index 95f75d61a647..3b5bcd08f624 100644 --- a/drivers/gpu/drm/xe/xe_exec_queue_types.h +++ b/drivers/gpu/drm/xe/xe_exec_queue_types.h @@ -297,6 +297,8 @@ struct xe_exec_queue { struct xe_exec_queue_ops { /** @init: Initialize exec queue for submission backend */ int (*init)(struct xe_exec_queue *q); + /** @reinit_kernel: Re-initialize kernel queue for submission backend */ + void (*reinit_kernel)(struct xe_exec_queue *q); /** @kill: Kill inflight submissions for backend */ void (*kill)(struct xe_exec_queue *q); /** @fini: Undoes the init() for submission backend */ diff --git a/drivers/gpu/drm/xe/xe_execlist.c b/drivers/gpu/drm/xe/xe_execlist.c index cc33ae80e8cf..fba0d2850905 100644 --- a/drivers/gpu/drm/xe/xe_execlist.c +++ b/drivers/gpu/drm/xe/xe_execlist.c @@ -403,6 +403,11 @@ static void execlist_exec_queue_destroy_async(struct work_struct *w) xe_exec_queue_fini(q); } +static void execlist_exec_queue_reinit_kernel(struct xe_exec_queue *q) +{ + /* NIY */ +} + static void execlist_exec_queue_kill(struct xe_exec_queue *q) { /* NIY */ @@ -460,6 +465,7 @@ static bool execlist_exec_queue_reset_status(struct xe_exec_queue *q) static const struct xe_exec_queue_ops execlist_exec_queue_ops = { .init = execlist_exec_queue_init, + .reinit_kernel = execlist_exec_queue_reinit_kernel, .kill = execlist_exec_queue_kill, .fini = execlist_exec_queue_fini, .destroy = execlist_exec_queue_destroy, diff --git a/drivers/gpu/drm/xe/xe_gpu_scheduler.c b/drivers/gpu/drm/xe/xe_gpu_scheduler.c index 67d8ce368486..e85bc4077809 100644 --- a/drivers/gpu/drm/xe/xe_gpu_scheduler.c +++ b/drivers/gpu/drm/xe/xe_gpu_scheduler.c @@ -3,7 +3,10 @@ * Copyright © 2023 Intel Corporation */ +#include "xe_assert.h" +#include "xe_exec_queue_types.h" #include "xe_gpu_scheduler.h" +#include "xe_guc_exec_queue_types.h" static void xe_sched_process_msg_queue(struct xe_gpu_scheduler *sched) { @@ -76,6 +79,7 @@ int xe_sched_init(struct xe_gpu_scheduler *sched, }; sched->ops = xe_ops; + sched->timeout = timeout; spin_lock_init(&sched->msg_lock); INIT_LIST_HEAD(&sched->msgs); INIT_WORK(&sched->work_process_msg, xe_sched_process_msg_work); @@ -83,6 +87,19 @@ int xe_sched_init(struct xe_gpu_scheduler *sched, return drm_sched_init(&sched->base, &args); } +void xe_sched_reinit(struct xe_gpu_scheduler *sched) +{ + struct xe_guc_exec_queue *ge = container_of(sched, struct xe_guc_exec_queue, sched); + + xe_gt_assert(ge->q->gt, drm_sched_is_stopped(&sched->base)); + + /* + * TODO: Implement drm_sched_reinit() instead of requiring the + * driver to restore individual fields. + */ + sched->base.timeout = sched->timeout; +} + void xe_sched_fini(struct xe_gpu_scheduler *sched) { xe_sched_submission_stop(sched); diff --git a/drivers/gpu/drm/xe/xe_gpu_scheduler.h b/drivers/gpu/drm/xe/xe_gpu_scheduler.h index 664c2db56af3..22e24b4b7171 100644 --- a/drivers/gpu/drm/xe/xe_gpu_scheduler.h +++ b/drivers/gpu/drm/xe/xe_gpu_scheduler.h @@ -17,6 +17,7 @@ int xe_sched_init(struct xe_gpu_scheduler *sched, long timeout, struct workqueue_struct *timeout_wq, atomic_t *score, const char *name, struct device *dev); +void xe_sched_reinit(struct xe_gpu_scheduler *sched); void xe_sched_fini(struct xe_gpu_scheduler *sched); void xe_sched_submission_start(struct xe_gpu_scheduler *sched); diff --git a/drivers/gpu/drm/xe/xe_gpu_scheduler_types.h b/drivers/gpu/drm/xe/xe_gpu_scheduler_types.h index 63d9bf92583c..e73fdacca164 100644 --- a/drivers/gpu/drm/xe/xe_gpu_scheduler_types.h +++ b/drivers/gpu/drm/xe/xe_gpu_scheduler_types.h @@ -51,6 +51,11 @@ struct xe_gpu_scheduler { spinlock_t msg_lock; /** @work_process_msg: processes messages */ struct work_struct work_process_msg; + /** + * @timeout: timeout for the scheduler instance, to be restored + * during exec queue re-initialization + */ + long timeout; }; #define xe_sched_entity drm_sched_entity diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c index 99d8c807ff05..f7519e55b610 100644 --- a/drivers/gpu/drm/xe/xe_guc_submit.c +++ b/drivers/gpu/drm/xe/xe_guc_submit.c @@ -2130,6 +2130,14 @@ static int guc_exec_queue_init(struct xe_exec_queue *q) return err; } +static void guc_exec_queue_reinit_kernel(struct xe_exec_queue *q) +{ + xe_gt_assert(q->gt, q->flags & EXEC_QUEUE_FLAG_KERNEL); + + atomic_set(&q->guc->state, 0); + xe_sched_reinit(&q->guc->sched); +} + static void guc_exec_queue_kill(struct xe_exec_queue *q) { trace_xe_exec_queue_kill(q); @@ -2597,6 +2605,7 @@ static bool guc_exec_queue_reset_status(struct xe_exec_queue *q) */ static const struct xe_exec_queue_ops guc_exec_queue_ops = { .init = guc_exec_queue_init, + .reinit_kernel = guc_exec_queue_reinit_kernel, .kill = guc_exec_queue_kill, .fini = guc_exec_queue_fini, .destroy = guc_exec_queue_destroy, -- 2.43.0