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 5FE9FF99344 for ; Thu, 23 Apr 2026 10:03:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2600F10E330; Thu, 23 Apr 2026 10:03:50 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="gmsYjlNp"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id 527AB10E330 for ; Thu, 23 Apr 2026 10:03:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776938629; x=1808474629; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UBuUZiFLPwzNjx/NgSe2NDu4KOAaxRp6QxmbQd/35xA=; b=gmsYjlNpkEGcOqSsmDJ0IGrm9Y2f+NQQapx8Fsa/f4CHeNAeZAgMXIC2 MPLZ8iEbekjFrF+gTL610JhZuqVpXCEueEu52M0IzglvsBViEnzyoLzCS +GpWALcVT2MXNV1ZzkYrJ8EHxhdWz4Kg0Wus1z6gTsZ0BAaShz1+V8Nte httQJKMeBD+o/eCKOsJOsya0CxZOJj9Q4/JiU8VwAkf7qc0lGNDPKFAYQ uQ38c+bX3rL+mcxof7vuMo4D2gGkoDDBrnRoIxZRAdrM/TXPEmOM02g53 oplS/lS3HlHJcqERzJNejt8KYp0QsbhB4UYlTwPaW/V0UsOkJOZh4b+Ob Q==; X-CSE-ConnectionGUID: x5qglpTSSdapxmO5i0aWsg== X-CSE-MsgGUID: f45BIVDqQSm7GEi681tAzA== X-IronPort-AV: E=McAfee;i="6800,10657,11764"; a="88600328" X-IronPort-AV: E=Sophos;i="6.23,194,1770624000"; d="scan'208";a="88600328" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Apr 2026 03:03:49 -0700 X-CSE-ConnectionGUID: 4SOmheuNRZqvBd/Nl3l3lg== X-CSE-MsgGUID: Yhet4++uTU6w7q8PrPFOEA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,194,1770624000"; d="scan'208";a="232522923" Received: from jraag-z790m-itx-wifi.iind.intel.com ([10.190.239.23]) by orviesa008.jf.intel.com with ESMTP; 23 Apr 2026 03:03:45 -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, maarten@lankhorst.se, jani.nikula@intel.com, lukasz.laguna@intel.com, zhanjun.dong@intel.com, lukas@wunner.de, daniele.ceraolospurio@intel.com, badal.nilawar@intel.com, Raag Jadav Subject: [PATCH v6 7/8] drm/xe/pm: Introduce xe_device_suspend/resume() Date: Thu, 23 Apr 2026 15:30:16 +0530 Message-ID: <20260423100017.1051587-8-raag.jadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260423100017.1051587-1-raag.jadav@intel.com> References: <20260423100017.1051587-1-raag.jadav@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" PCIe FLR prepare/re-initialization flows pretty much reflect system suspend/resume flows with a few notable exceptions. Repurpose existing flows for PCIe FLR with an explicit flag to distinguish between them. Suggested-by: Daniele Ceraolo Spurio Signed-off-by: Raag Jadav --- v6: Repurpose system suspend/resume flow for FLR (Daniele) --- drivers/gpu/drm/xe/xe_device.c | 150 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/xe/xe_device.h | 2 + drivers/gpu/drm/xe/xe_pm.c | 103 ++-------------------- 3 files changed, 160 insertions(+), 95 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 4b45b617a039..65f107ba1410 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -39,6 +39,7 @@ #include "xe_force_wake.h" #include "xe_ggtt.h" #include "xe_gt.h" +#include "xe_gt_idle.h" #include "xe_gt_mcr.h" #include "xe_gt_printk.h" #include "xe_gt_sriov_vf.h" @@ -66,6 +67,7 @@ #include "xe_soc_remapper.h" #include "xe_survivability_mode.h" #include "xe_sriov.h" +#include "xe_sriov_vf_ccs.h" #include "xe_svm.h" #include "xe_sysctrl.h" #include "xe_tile.h" @@ -1486,3 +1488,151 @@ struct xe_vm *xe_device_asid_to_vm(struct xe_device *xe, u32 asid) return vm; } + +/** + * xe_device_suspend() - Common helper for system suspend and FLR prepare + * @xe: xe device instance + * @flr: indicate FLR prepare + * + * Return: 0 on success, negative error code otherwise. + */ +int xe_device_suspend(struct xe_device *xe, bool flr) +{ + struct xe_gt *gt; + u8 id; + int err; + + err = xe_pxp_pm_suspend(xe->pxp); + if (err) + return err; + + xe_late_bind_wait_for_worker_completion(&xe->late_bind); + + for_each_gt(gt, xe, id) + xe_gt_suspend_prepare(gt); + + if (flr) { + for_each_gt(gt, xe, id) + xe_gt_flr_prepare(gt); + } else { + xe_display_pm_suspend(xe); + + /* FIXME: Super racey... */ + err = xe_bo_evict_all(xe); + if (err) + goto err_display; + + for_each_gt(gt, xe, id) { + err = xe_gt_suspend(gt); + if (err) + goto err_display; + } + } + + xe_irq_suspend(xe); + + if (flr) { + /* TODO: Drop all user bos */ + xe_bo_pci_dev_remove_pinned(xe); + + unmap_mapping_range(xe->drm.anon_inode->i_mapping, 0, 0, 1); + } else { + xe_display_pm_suspend_late(xe); + + xe_i2c_pm_suspend(xe); + } + + return 0; + +err_display: + xe_display_pm_resume(xe); + xe_pxp_pm_resume(xe->pxp); + return err; +} + +/** + * xe_device_resume() - Common helper for System resume and re-initialization post FLR + * @xe: xe device instance + * @flr: indicate re-initialization post FLR + * + * Return: 0 on success + */ +int xe_device_resume(struct xe_device *xe, bool flr) +{ + struct xe_tile *tile; + struct xe_gt *gt; + u8 id; + int err; + + for_each_gt(gt, xe, id) + xe_gt_idle_disable_c6(gt); + + for_each_tile(tile, xe, id) + xe_wa_apply_tile_workarounds(tile); + + err = xe_pcode_ready(xe, true); + if (err) + return err; + + assert_lmem_ready(xe); + + if (flr) { + err = xe_bo_restore_map(xe); + if (err) + return err; + + for_each_gt(gt, xe, id) { + err = xe_gt_reinit(gt); + if (err) + return err; + } + } else { + xe_display_pm_resume_early(xe); + + /* + * This only restores pinned memory which is the memory required for the + * GT(s) to resume. + */ + err = xe_bo_restore_early(xe); + if (err) + return err; + } + + xe_i2c_pm_resume(xe, true); + + xe_sysctrl_pm_resume(xe); + + xe_irq_resume(xe); + + for_each_gt(gt, xe, id) { + err = xe_gt_resume(gt); + if (err) + break; + } + + if (flr) { + if (err) + return err; + } else { + /* + * Try to bring up display before bailing from GT resume failure, + * so we don't leave the user clueless with a blank screen. + */ + xe_display_pm_resume(xe); + if (err) + return err; + + err = xe_bo_restore_late(xe); + if (err) + return err; + + if (IS_VF_CCS_READY(xe)) + xe_sriov_vf_ccs_register_context(xe); + } + + xe_pxp_pm_resume(xe->pxp); + + xe_late_bind_fw_load(&xe->late_bind); + + return 0; +} diff --git a/drivers/gpu/drm/xe/xe_device.h b/drivers/gpu/drm/xe/xe_device.h index 555c191f7510..d776e620cdf3 100644 --- a/drivers/gpu/drm/xe/xe_device.h +++ b/drivers/gpu/drm/xe/xe_device.h @@ -48,7 +48,9 @@ struct xe_device *xe_device_create(struct pci_dev *pdev, int xe_device_probe_early(struct xe_device *xe); int xe_device_probe(struct xe_device *xe); void xe_device_remove(struct xe_device *xe); +int xe_device_resume(struct xe_device *xe, bool flr); void xe_device_shutdown(struct xe_device *xe); +int xe_device_suspend(struct xe_device *xe, bool flr); void xe_device_wmb(struct xe_device *xe); diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c index d4672eb07476..e2097e4524af 100644 --- a/drivers/gpu/drm/xe/xe_pm.c +++ b/drivers/gpu/drm/xe/xe_pm.c @@ -171,52 +171,18 @@ static void xe_rpm_lockmap_release(const struct xe_device *xe) */ int xe_pm_suspend(struct xe_device *xe) { - struct xe_gt *gt; - u8 id; int err; drm_dbg(&xe->drm, "Suspending device\n"); xe_pm_block_begin_signalling(); trace_xe_pm_suspend(xe, __builtin_return_address(0)); - err = xe_pxp_pm_suspend(xe->pxp); + err = xe_device_suspend(xe, false); if (err) - goto err; + drm_dbg(&xe->drm, "Device suspend failed %d\n", err); + else + drm_dbg(&xe->drm, "Device suspended\n"); - xe_late_bind_wait_for_worker_completion(&xe->late_bind); - - for_each_gt(gt, xe, id) - xe_gt_suspend_prepare(gt); - - xe_display_pm_suspend(xe); - - /* FIXME: Super racey... */ - err = xe_bo_evict_all(xe); - if (err) - goto err_display; - - for_each_gt(gt, xe, id) { - err = xe_gt_suspend(gt); - if (err) - goto err_display; - } - - xe_irq_suspend(xe); - - xe_display_pm_suspend_late(xe); - - xe_i2c_pm_suspend(xe); - - drm_dbg(&xe->drm, "Device suspended\n"); - xe_pm_block_end_signalling(); - - return 0; - -err_display: - xe_display_pm_resume(xe); - xe_pxp_pm_resume(xe->pxp); -err: - drm_dbg(&xe->drm, "Device suspend failed %d\n", err); xe_pm_block_end_signalling(); return err; } @@ -229,71 +195,18 @@ int xe_pm_suspend(struct xe_device *xe) */ int xe_pm_resume(struct xe_device *xe) { - struct xe_tile *tile; - struct xe_gt *gt; - u8 id; int err; xe_pm_block_begin_signalling(); drm_dbg(&xe->drm, "Resuming device\n"); trace_xe_pm_resume(xe, __builtin_return_address(0)); - for_each_gt(gt, xe, id) - xe_gt_idle_disable_c6(gt); - - for_each_tile(tile, xe, id) - xe_wa_apply_tile_workarounds(tile); - - err = xe_pcode_ready(xe, true); - if (err) - return err; - - xe_display_pm_resume_early(xe); - - /* - * This only restores pinned memory which is the memory required for the - * GT(s) to resume. - */ - err = xe_bo_restore_early(xe); - if (err) - goto err; - - xe_i2c_pm_resume(xe, true); - - xe_sysctrl_pm_resume(xe); - - xe_irq_resume(xe); - - for_each_gt(gt, xe, id) { - err = xe_gt_resume(gt); - if (err) - break; - } - - /* - * Try to bring up display before bailing from GT resume failure, - * so we don't leave the user clueless with a blank screen. - */ - xe_display_pm_resume(xe); - if (err) - goto err; - - err = xe_bo_restore_late(xe); + err = xe_device_resume(xe, false); if (err) - goto err; - - xe_pxp_pm_resume(xe->pxp); - - if (IS_VF_CCS_READY(xe)) - xe_sriov_vf_ccs_register_context(xe); - - xe_late_bind_fw_load(&xe->late_bind); + drm_dbg(&xe->drm, "Device resume failed %d\n", err); + else + drm_dbg(&xe->drm, "Device resumed\n"); - drm_dbg(&xe->drm, "Device resumed\n"); - xe_pm_block_end_signalling(); - return 0; -err: - drm_dbg(&xe->drm, "Device resume failed %d\n", err); xe_pm_block_end_signalling(); return err; } -- 2.43.0