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 13661C3065B for ; Wed, 26 Jun 2024 00:38:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 99F7010E300; Wed, 26 Jun 2024 00:38:45 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Yvxl1BA7"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 212B810E2DF for ; Wed, 26 Jun 2024 00:38:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1719362325; x=1750898325; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=RcRXYzC/nDuikuweal5gF77tzPRFZwLVKsAucpB42sI=; b=Yvxl1BA7HqhCN2eDBY6N50aq3AMcwexCqdeFOpmX8c9yAGcDlZdY4RnX I9qqVyCt7XnYKC1YE45g5x440Oxp3xgXfPvNBjeAjymeupivWIahdDi75 2V9yp4+JIOU52uFOZdLzhHqkVrOLkHWcLJVR7CYu6z6fFhf2vadfkTum8 drtPfSn5IJxQ/QgwXbm1JFu1bp9fjV3t+VJdeP/CSE0o+p5mx8cxWP73Z Lb1v0wE1CzivtwgXaHV6fy9N3qEoqTlKrtOdjmrfOtHEI98ZwhI1GqAUi gq1N7r+CnWoWbTZ39Y9FoJqJfY3rPWhmSGgUYdJK+0fBUdoou9l2fT+hJ A==; X-CSE-ConnectionGUID: gRV55rKBQKSvjyrfFaHdxg== X-CSE-MsgGUID: O1wAiR+KSZuL8QelMLUHRw== X-IronPort-AV: E=McAfee;i="6700,10204,11114"; a="16238394" X-IronPort-AV: E=Sophos;i="6.08,265,1712646000"; d="scan'208";a="16238394" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jun 2024 17:38:44 -0700 X-CSE-ConnectionGUID: dz2bxuQJS1WmkhfES7R57g== X-CSE-MsgGUID: fw8LdnvNR3a0vEGYyrP01A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,265,1712646000"; d="scan'208";a="43629603" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jun 2024 17:38:43 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org Subject: [PATCH v5 7/7] drm/xe: Add VM bind IOCTL error injection Date: Tue, 25 Jun 2024 17:39:20 -0700 Message-Id: <20240626003920.4060633-8-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240626003920.4060633-1-matthew.brost@intel.com> References: <20240626003920.4060633-1-matthew.brost@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" Add VM bind IOCTL error injection which steals MSB of the bind flags field which if set injects errors at various points in the VM bind IOCTL. Intended to validate error paths. Enabled by CONFIG_DRM_XE_DEBUG. v4: - Change define layout (Jonathan) Signed-off-by: Matthew Brost Reviewed-by: Jonathan Cavitt --- drivers/gpu/drm/xe/xe_device_types.h | 12 ++++++++++++ drivers/gpu/drm/xe/xe_pt.c | 12 ++++++++++++ drivers/gpu/drm/xe/xe_vm.c | 24 +++++++++++++++++++++++- drivers/gpu/drm/xe/xe_vm_types.h | 14 ++++++++++++++ 4 files changed, 61 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index c37be471d11c..57cbb6889228 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -23,6 +23,10 @@ #include "xe_sriov_types.h" #include "xe_step_types.h" +#if IS_ENABLED(CONFIG_DRM_XE_DEBUG) +#define TEST_VM_OPS_ERROR +#endif + #if IS_ENABLED(CONFIG_DRM_XE_DISPLAY) #include "soc/intel_pch.h" #include "intel_display_core.h" @@ -477,6 +481,14 @@ struct xe_device { int mode; } wedged; +#ifdef TEST_VM_OPS_ERROR + /** + * @vm_inject_error_position: inject errors at different places in VM + * bind IOCTL based on this value + */ + u8 vm_inject_error_position; +#endif + /* private: */ #if IS_ENABLED(CONFIG_DRM_XE_DISPLAY) diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index a43b558b30f4..7692b8c95151 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -1861,6 +1861,12 @@ int xe_pt_update_ops_prepare(struct xe_tile *tile, struct xe_vma_ops *vops) xe_tile_assert(tile, pt_update_ops->current_op <= pt_update_ops->num_ops); +#ifdef TEST_VM_OPS_ERROR + if (vops->inject_error && + vops->vm->xe->vm_inject_error_position == FORCE_OP_ERROR_PREPARE) + return -ENOSPC; +#endif + return 0; } @@ -2001,6 +2007,12 @@ xe_pt_update_ops_run(struct xe_tile *tile, struct xe_vma_ops *vops) return dma_fence_get_stub(); } +#ifdef TEST_VM_OPS_ERROR + if (vops->inject_error && + vm->xe->vm_inject_error_position == FORCE_OP_ERROR_RUN) + return ERR_PTR(-ENOSPC); +#endif + if (pt_update_ops->needs_invalidation) { ifence = kzalloc(sizeof(*ifence), GFP_KERNEL); if (!ifence) { diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index 68f8f975e36e..773f21328f72 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -2468,6 +2468,12 @@ static int vm_bind_ioctl_ops_lock_and_prep(struct drm_exec *exec, return err; } +#ifdef TEST_VM_OPS_ERROR + if (vops->inject_error && + vm->xe->vm_inject_error_position == FORCE_OP_ERROR_LOCK) + return -ENOSPC; +#endif + return 0; } @@ -2704,11 +2710,18 @@ static int vm_bind_ioctl_ops_execute(struct xe_vm *vm, return err; } -#define SUPPORTED_FLAGS \ +#define SUPPORTED_FLAGS_STUB \ (DRM_XE_VM_BIND_FLAG_READONLY | \ DRM_XE_VM_BIND_FLAG_IMMEDIATE | \ DRM_XE_VM_BIND_FLAG_NULL | \ DRM_XE_VM_BIND_FLAG_DUMPABLE) + +#ifdef TEST_VM_OPS_ERROR +#define SUPPORTED_FLAGS (SUPPORTED_FLAGS_STUB | FORCE_OP_ERROR) +#else +#define SUPPORTED_FLAGS SUPPORTED_FLAGS_STUB +#endif + #define XE_64K_PAGE_MASK 0xffffull #define ALL_DRM_XE_SYNCS_FLAGS (DRM_XE_SYNCS_FLAG_WAIT_FOR_OP) @@ -3056,6 +3069,15 @@ int xe_vm_bind_ioctl(struct drm_device *dev, void *data, struct drm_file *file) err = vm_bind_ioctl_ops_parse(vm, ops[i], &vops); if (err) goto unwind_ops; + +#ifdef TEST_VM_OPS_ERROR + if (flags & FORCE_OP_ERROR) { + vops.inject_error = true; + vm->xe->vm_inject_error_position = + (vm->xe->vm_inject_error_position + 1) % + FORCE_OP_ERROR_COUNT; + } +#endif } /* Nothing to do */ diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h index 27d651093d30..7f9a303e51d8 100644 --- a/drivers/gpu/drm/xe/xe_vm_types.h +++ b/drivers/gpu/drm/xe/xe_vm_types.h @@ -23,6 +23,16 @@ struct xe_user_fence; struct xe_vm; struct xe_vm_pgtable_update_op; +#if IS_ENABLED(CONFIG_DRM_XE_DEBUG) +#define TEST_VM_OPS_ERROR +#define FORCE_OP_ERROR BIT(31) + +#define FORCE_OP_ERROR_LOCK 0 +#define FORCE_OP_ERROR_PREPARE 1 +#define FORCE_OP_ERROR_RUN 2 +#define FORCE_OP_ERROR_COUNT 3 +#endif + #define XE_VMA_READ_ONLY DRM_GPUVA_USERBITS #define XE_VMA_DESTROYED (DRM_GPUVA_USERBITS << 1) #define XE_VMA_ATOMIC_PTE_BIT (DRM_GPUVA_USERBITS << 2) @@ -359,6 +369,10 @@ struct xe_vma_ops { u32 num_syncs; /** @pt_update_ops: page table update operations */ struct xe_vm_pgtable_update_ops pt_update_ops[XE_MAX_TILES_PER_DEVICE]; +#ifdef TEST_VM_OPS_ERROR + /** @inject_error: inject error to test error handling */ + bool inject_error; +#endif }; #endif -- 2.34.1