From patchwork Wed Oct 16 03:25:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 13837645 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 76131D2069D for ; Wed, 16 Oct 2024 03:25:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0444D10E660; Wed, 16 Oct 2024 03:25:04 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="ElXsN9n0"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2F4E310E654; Wed, 16 Oct 2024 03:25:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1729049100; x=1760585100; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ICHzS1IvSe3mhck8yHv4+OEYu+Ud7FnYBBkFJwqC/YA=; b=ElXsN9n0XYCQ9hWvzwUgWRL9c6xBBhgHIUD1qeRgxaVilylGU2z0KBkD 37BMpNJvtqJ7OQmFx+KAL//yrFxNB8E9IunKTZm0ie5jj+gbpLXdAseX+ 7p+/e1CVIe8thirwDPZ6a3DMbCEPXctOnD+1Fu5iQGvcSyV+s0TPJ8KQy 9+fXqUfw0AXiBXRyZ38q1i5ESRU1OzMqWR794u32SKQpu10PZrYbSQ58Q BFo/iJQojXcLLLhqHQwNVBU2BMYPevO15UdZtDsyVH50pEM3p+Hs2m7Oj f2UDei6v50DFg62/IPGSauZaPz3EmplPso1+Q3bCx1GUsygDjwY49zCdT g==; X-CSE-ConnectionGUID: rAURCsIzR/ScSS1n9D2qhg== X-CSE-MsgGUID: XApLSoEDQyieT6kC8QtrVQ== X-IronPort-AV: E=McAfee;i="6700,10204,11225"; a="39056429" X-IronPort-AV: E=Sophos;i="6.11,206,1725346800"; d="scan'208";a="39056429" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Oct 2024 20:24:59 -0700 X-CSE-ConnectionGUID: RVz4MwzMRNeNRAcXWPTVvA== X-CSE-MsgGUID: 79AazXBzTx2VFRIg1EgTgw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,206,1725346800"; d="scan'208";a="78930268" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Oct 2024 20:24:58 -0700 From: Matthew Brost To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: apopple@nvidia.com, airlied@gmail.com, christian.koenig@amd.com, thomas.hellstrom@linux.intel.com, simona.vetter@ffwll.ch, felix.kuehling@amd.com, dakr@kernel.org Subject: [PATCH v2 17/29] drm/xe: Add SVM device memory mirroring Date: Tue, 15 Oct 2024 20:25:06 -0700 Message-Id: <20241016032518.539495-18-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241016032518.539495-1-matthew.brost@intel.com> References: <20241016032518.539495-1-matthew.brost@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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add SVM device memory mirroring which enables device pages for migration. TODO: Hide this behind Kconfig Signed-off-by: Niranjana Vishwanathapura Signed-off-by: Matthew Brost Reviewed-by: Thomas Hellström gpusvm); } +static void *xe_svm_devm_owner(struct xe_device *xe) +{ + return xe; +} + static struct drm_gpusvm_range * xe_svm_range_alloc(struct drm_gpusvm *gpusvm) { @@ -284,8 +289,9 @@ int xe_svm_init(struct xe_vm *vm) xe_svm_garbage_collector_work_func); return drm_gpusvm_init(&vm->svm.gpusvm, "Xe SVM", &vm->xe->drm, - current->mm, NULL, 0, vm->size, - SZ_512M, &gpusvm_ops, fault_chunk_sizes, + current->mm, xe_svm_devm_owner(vm->xe), 0, + vm->size, SZ_512M, &gpusvm_ops, + fault_chunk_sizes, ARRAY_SIZE(fault_chunk_sizes)); } @@ -383,3 +389,49 @@ bool xe_svm_has_mapping(struct xe_vm *vm, u64 start, u64 end) { return drm_gpusvm_has_mapping(&vm->svm.gpusvm, start, end); } + +/** + * xe_devm_add: Remap and provide memmap backing for device memory + * @tile: tile that the memory region belongs to + * @mr: memory region to remap + * + * This remap device memory to host physical address space and create + * struct page to back device memory + * + * Return: 0 on success standard error code otherwise + */ +int xe_devm_add(struct xe_tile *tile, struct xe_mem_region *mr) +{ + struct xe_device *xe = tile_to_xe(tile); + struct device *dev = &to_pci_dev(xe->drm.dev)->dev; + struct resource *res; + void *addr; + int ret; + + res = devm_request_free_mem_region(dev, &iomem_resource, + mr->usable_size); + if (IS_ERR(res)) { + ret = PTR_ERR(res); + return ret; + } + + mr->pagemap.type = MEMORY_DEVICE_PRIVATE; + mr->pagemap.range.start = res->start; + mr->pagemap.range.end = res->end; + mr->pagemap.nr_range = 1; + mr->pagemap.ops = drm_gpusvm_pagemap_ops_get(); + mr->pagemap.owner = xe_svm_devm_owner(xe); + addr = devm_memremap_pages(dev, &mr->pagemap); + if (IS_ERR(addr)) { + devm_release_mem_region(dev, res->start, resource_size(res)); + ret = PTR_ERR(addr); + drm_err(&xe->drm, "Failed to remap tile %d memory, errno %d\n", + tile->id, ret); + return ret; + } + mr->hpa_base = res->start; + + drm_info(&xe->drm, "Added tile %d memory [%llx-%llx] to devm, remapped to %pr\n", + tile->id, mr->io_start, mr->io_start + mr->usable_size, res); + return 0; +} diff --git a/drivers/gpu/drm/xe/xe_svm.h b/drivers/gpu/drm/xe/xe_svm.h index 472fbc51f30e..760d22cefb1e 100644 --- a/drivers/gpu/drm/xe/xe_svm.h +++ b/drivers/gpu/drm/xe/xe_svm.h @@ -11,6 +11,7 @@ #define XE_INTERCONNECT_VRAM DRM_INTERCONNECT_DRIVER +struct xe_mem_region; struct xe_tile; struct xe_vm; struct xe_vma; @@ -22,6 +23,8 @@ struct xe_svm_range { u8 tile_invalidated; }; +int xe_devm_add(struct xe_tile *tile, struct xe_mem_region *mr); + int xe_svm_init(struct xe_vm *vm); void xe_svm_fini(struct xe_vm *vm); void xe_svm_close(struct xe_vm *vm); diff --git a/drivers/gpu/drm/xe/xe_tile.c b/drivers/gpu/drm/xe/xe_tile.c index 07cf7cfe4abd..bbb430392dfb 100644 --- a/drivers/gpu/drm/xe/xe_tile.c +++ b/drivers/gpu/drm/xe/xe_tile.c @@ -13,6 +13,7 @@ #include "xe_migrate.h" #include "xe_pcode.h" #include "xe_sa.h" +#include "xe_svm.h" #include "xe_tile.h" #include "xe_tile_sysfs.h" #include "xe_ttm_vram_mgr.h" @@ -164,6 +165,7 @@ static int tile_ttm_mgr_init(struct xe_tile *tile) */ int xe_tile_init_noalloc(struct xe_tile *tile) { + struct xe_device *xe = tile_to_xe(tile); int err; err = tile_ttm_mgr_init(tile); @@ -176,6 +178,9 @@ int xe_tile_init_noalloc(struct xe_tile *tile) xe_wa_apply_tile_workarounds(tile); + if (xe->info.has_usm && IS_DGFX(xe)) + xe_devm_add(tile, &tile->mem.vram); + err = xe_tile_sysfs_init(tile); return 0;