From patchwork Fri Apr 22 19:50:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Roper X-Patchwork-Id: 12824052 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 6726AC433EF for ; Fri, 22 Apr 2022 19:50:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9A8A910E659; Fri, 22 Apr 2022 19:50:23 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9107D10E64A; Fri, 22 Apr 2022 19:50:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1650657021; x=1682193021; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=crpxNc2oUcn53DncUN9ljqmb/XSre7mfZ/TeMzWpuzQ=; b=VrJ3hyYwaF4qfqH6SOAykVN+k3WdQmSQGsw4TpLViFfkqvBf+75qMssK je9dHFwYZqp5VRWpSHAffssGl8+HzEkD9GCejVD7n0Hrcvu+j19oHtPax MlMs/zo7RiT7HHiDjEKmEljAkAYVJB//8X0YZjZgXg1tb+YyiuGwpYXHk eGOeEEtRHuUtcktkD+oGMYyEtR50oA+C6naLcbU7UgOVNmwzVxiF3J+2u shJOCqb5Tp7L5PsRi/c12SwHjESfiNm1YHS+YmxB0LLZ2AuT857yaG1Vc xB7ja9DesJ0o2+BoPwO4T0BjDEiwJ2ZYJ2NgkG9tqJQze74wOWAug52zW A==; X-IronPort-AV: E=McAfee;i="6400,9594,10324"; a="351219969" X-IronPort-AV: E=Sophos;i="5.90,282,1643702400"; d="scan'208";a="351219969" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Apr 2022 12:50:21 -0700 X-IronPort-AV: E=Sophos;i="5.90,282,1643702400"; d="scan'208";a="672595750" Received: from mdroper-desk1.fm.intel.com ([10.1.27.134]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Apr 2022 12:50:20 -0700 From: Matt Roper To: intel-gfx@lists.freedesktop.org Subject: [PATCH 1/2] drm/i915/xehp: Add compute engine ABI Date: Fri, 22 Apr 2022 12:50:06 -0700 Message-Id: <20220422195007.4019661-2-matthew.d.roper@intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220422195007.4019661-1-matthew.d.roper@intel.com> References: <20220422195007.4019661-1-matthew.d.roper@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: , Cc: Tvrtko Ursulin , Jordan Justen , dri-devel@lists.freedesktop.org, Daniele Ceraolo Spurio , Szymon Morek , Vinay Belgaumkar Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" We're now ready to start exposing compute engines to userspace. While we're at it, let's extend the kerneldoc description for the other engine types as well. Cc: Daniele Ceraolo Spurio Cc: Tvrtko Ursulin Cc: Vinay Belgaumkar Cc: Jordan Justen Cc: Szymon Morek UMD (mesa): https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14395 UMD (compute): https://github.com/intel/compute-runtime/pull/451 Signed-off-by: Matt Roper --- drivers/gpu/drm/i915/gt/intel_engine_user.c | 2 +- drivers/gpu/drm/i915/gt/intel_gt.c | 1 + drivers/gpu/drm/i915/i915_drm_client.c | 1 + drivers/gpu/drm/i915/i915_drm_client.h | 2 +- include/uapi/drm/i915_drm.h | 62 +++++++++++++++++++-- 5 files changed, 60 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c index 0f6cd96b459f..46a174f8aa00 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_user.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c @@ -47,7 +47,7 @@ static const u8 uabi_classes[] = { [COPY_ENGINE_CLASS] = I915_ENGINE_CLASS_COPY, [VIDEO_DECODE_CLASS] = I915_ENGINE_CLASS_VIDEO, [VIDEO_ENHANCEMENT_CLASS] = I915_ENGINE_CLASS_VIDEO_ENHANCE, - /* TODO: Add COMPUTE_CLASS mapping once ABI is available */ + [COMPUTE_CLASS] = I915_ENGINE_CLASS_COMPUTE, }; static int engine_cmp(void *priv, const struct list_head *A, diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 92394f13b42f..c96e123496a5 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -1175,6 +1175,7 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) [VIDEO_DECODE_CLASS] = GEN12_VD_TLB_INV_CR, [VIDEO_ENHANCEMENT_CLASS] = GEN12_VE_TLB_INV_CR, [COPY_ENGINE_CLASS] = GEN12_BLT_TLB_INV_CR, + [COMPUTE_CLASS] = GEN12_GFX_TLB_INV_CR, }; struct drm_i915_private *i915 = gt->i915; struct intel_uncore *uncore = gt->uncore; diff --git a/drivers/gpu/drm/i915/i915_drm_client.c b/drivers/gpu/drm/i915/i915_drm_client.c index 475a6f824cad..18d38cb59923 100644 --- a/drivers/gpu/drm/i915/i915_drm_client.c +++ b/drivers/gpu/drm/i915/i915_drm_client.c @@ -81,6 +81,7 @@ static const char * const uabi_class_names[] = { [I915_ENGINE_CLASS_COPY] = "copy", [I915_ENGINE_CLASS_VIDEO] = "video", [I915_ENGINE_CLASS_VIDEO_ENHANCE] = "video-enhance", + [I915_ENGINE_CLASS_COMPUTE] = "compute", }; static u64 busy_add(struct i915_gem_context *ctx, unsigned int class) diff --git a/drivers/gpu/drm/i915/i915_drm_client.h b/drivers/gpu/drm/i915/i915_drm_client.h index 5f5b02b01ba0..f796c5e8e060 100644 --- a/drivers/gpu/drm/i915/i915_drm_client.h +++ b/drivers/gpu/drm/i915/i915_drm_client.h @@ -13,7 +13,7 @@ #include "gt/intel_engine_types.h" -#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_VIDEO_ENHANCE +#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE struct drm_i915_private; diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 35ca528803fd..a2def7b27009 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -154,21 +154,71 @@ enum i915_mocs_table_index { I915_MOCS_CACHED, }; -/* +/** + * enum drm_i915_gem_engine_class - uapi engine type enumeration + * * Different engines serve different roles, and there may be more than one - * engine serving each role. enum drm_i915_gem_engine_class provides a - * classification of the role of the engine, which may be used when requesting - * operations to be performed on a certain subset of engines, or for providing - * information about that group. + * engine serving each role. This enum provides a classification of the role + * of the engine, which may be used when requesting operations to be performed + * on a certain subset of engines, or for providing information about that + * group. */ enum drm_i915_gem_engine_class { + /** + * @I915_ENGINE_CLASS_RENDER: + * + * Render engines support instructions used for 3D, Compute (GPGPU), + * and programmable media workloads. These instructions fetch data and + * dispatch individual work items to threads that operate in parallel. + * The threads run small programs (called "kernels" or "shaders") on + * the GPU's execution units (EUs). + */ I915_ENGINE_CLASS_RENDER = 0, + + /** + * @I915_ENGINE_CLASS_COPY: + * + * Copy engines (also referred to as "blitters") support instructions + * that move blocks of data from one location in memory to another, + * or that fill a specified location of memory with fixed data. + * Copy engines can perform pre-defined logical or bitwise operations + * on the source, destination, or pattern data. + */ I915_ENGINE_CLASS_COPY = 1, + + /** + * @I915_ENGINE_CLASS_VIDEO: + * + * Video engines (also referred to as "bit stream decode" (BSD) or + * "vdbox") support instructions that perform fixed-function media + * decode and encode. + */ I915_ENGINE_CLASS_VIDEO = 2, + + /** + * @I915_ENGINE_CLASS_VIDEO_ENHANCE: + * + * Video enhancement engines (also referred to as "vebox") support + * instructions related to image enhancement. + */ I915_ENGINE_CLASS_VIDEO_ENHANCE = 3, - /* should be kept compact */ + /** + * @I915_ENGINE_CLASS_COMPUTE: + * + * Compute engines support a subset of the instructions available + * on render engines: compute engines support Compute (GPGPU) and + * programmable media workloads, but do not support the 3D pipeline. + */ + I915_ENGINE_CLASS_COMPUTE = 4, + + /* Values in this enum should be kept compact. */ + /** + * @I915_ENGINE_CLASS_INVALID: + * + * Placeholder value to represent an invalid engine class assignment. + */ I915_ENGINE_CLASS_INVALID = -1 };