From patchwork Tue Mar 15 18:04:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bob Beckett X-Patchwork-Id: 12781706 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 8A415C433EF for ; Tue, 15 Mar 2022 18:05:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EAA4E10E43E; Tue, 15 Mar 2022 18:05:12 +0000 (UTC) Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by gabe.freedesktop.org (Postfix) with ESMTPS id 84F6F10E3D9; Tue, 15 Mar 2022 18:05:10 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: bbeckett) with ESMTPSA id 052B61F4214F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1647367509; bh=DsgjoK4LQ0Ly1eGE4+wdIjNPUCeUIRPSa/I2TX1Fe60=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EnrQeOtS0Lw8sjUpWtPfoHxS52KcgRzYKsiVY3/eB8i3oxs9pnMGcNMCdPhfGvUH4 XyHOUG2QaaBGE1BHGlcEB4YlY8vP5FmI7n+CjEdkcn4U4j8YWBmGbppmzhkiDAnFIA vq6DHiktdO3+ED7Co2T/AWnEl/h72EHZpFHfTh8Vi7gld4j60+sVCLGfH+d9jE9YgQ uAQ1PxUzjewIY5nlVQw+xv9z5M0Tge/mChj828ltjOAvlCsoJI1JLl46Z2E8PaxRRY 6nR09Gie1K1sGIIciAt/zsKH86I1XfFvlzfMl+0gUEqjB5YhkHOasn9a38eg2P0636 Vaw7ZU83n0iHg== From: Robert Beckett To: intel-gfx@lists.freedesktop.org, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Subject: [RFC PATCH 4/7] drm/i915: stolen memory use ttm backend Date: Tue, 15 Mar 2022 18:04:41 +0000 Message-Id: <20220315180444.3327283-5-bob.beckett@collabora.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220315180444.3327283-1-bob.beckett@collabora.com> References: <20220315180444.3327283-1-bob.beckett@collabora.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: Robert Beckett , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Signed-off-by: Robert Beckett --- drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 385 ++------------------- drivers/gpu/drm/i915/gem/i915_gem_stolen.h | 9 - drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 14 +- drivers/gpu/drm/i915/gem/i915_gem_ttm.h | 7 + 4 files changed, 40 insertions(+), 375 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c index 265133cb2a47..e58f9902ef47 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c @@ -4,19 +4,22 @@ * Copyright © 2008-2012 Intel Corporation */ +#include "drm/ttm/ttm_placement.h" +#include "gem/i915_gem_object_types.h" #include #include -#include #include #include "gem/i915_gem_lmem.h" #include "gem/i915_gem_region.h" +#include "gem/i915_gem_ttm.h" #include "i915_drv.h" #include "i915_gem_stolen.h" #include "i915_reg.h" #include "i915_vgpu.h" #include "intel_mchbar_regs.h" +#include "intel_region_ttm.h" /* * The BIOS typically reserves some of the system's memory for the exclusive @@ -30,46 +33,6 @@ * for is a boon. */ -int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *i915, - struct drm_mm_node *node, u64 size, - unsigned alignment, u64 start, u64 end) -{ - int ret; - - if (!drm_mm_initialized(&i915->mm.stolen)) - return -ENODEV; - - /* WaSkipStolenMemoryFirstPage:bdw+ */ - if (GRAPHICS_VER(i915) >= 8 && start < 4096) - start = 4096; - - mutex_lock(&i915->mm.stolen_lock); - ret = drm_mm_insert_node_in_range(&i915->mm.stolen, node, - size, alignment, 0, - start, end, DRM_MM_INSERT_BEST); - mutex_unlock(&i915->mm.stolen_lock); - - return ret; -} - -int i915_gem_stolen_insert_node(struct drm_i915_private *i915, - struct drm_mm_node *node, u64 size, - unsigned alignment) -{ - return i915_gem_stolen_insert_node_in_range(i915, node, - size, alignment, - I915_GEM_STOLEN_BIAS, - U64_MAX); -} - -void i915_gem_stolen_remove_node(struct drm_i915_private *i915, - struct drm_mm_node *node) -{ - mutex_lock(&i915->mm.stolen_lock); - drm_mm_remove_node(node); - mutex_unlock(&i915->mm.stolen_lock); -} - static int i915_adjust_stolen(struct drm_i915_private *i915, struct resource *dsm) { @@ -170,14 +133,6 @@ static int i915_adjust_stolen(struct drm_i915_private *i915, return 0; } -static void i915_gem_cleanup_stolen(struct drm_i915_private *i915) -{ - if (!drm_mm_initialized(&i915->mm.stolen)) - return; - - drm_mm_takedown(&i915->mm.stolen); -} - static void g4x_get_stolen_reserved(struct drm_i915_private *i915, struct intel_uncore *uncore, resource_size_t *base, @@ -510,216 +465,15 @@ static int i915_gem_init_stolen(struct intel_memory_region *mem) return 0; /* Basic memrange allocator for stolen space. */ - drm_mm_init(&i915->mm.stolen, 0, i915->stolen_usable_size); - - return 0; -} - -static void dbg_poison(struct i915_ggtt *ggtt, - dma_addr_t addr, resource_size_t size, - u8 x) -{ -#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM) - if (!drm_mm_node_allocated(&ggtt->error_capture)) - return; - - if (ggtt->vm.bind_async_flags & I915_VMA_GLOBAL_BIND) - return; /* beware stop_machine() inversion */ - - GEM_BUG_ON(!IS_ALIGNED(size, PAGE_SIZE)); - - mutex_lock(&ggtt->error_mutex); - while (size) { - void __iomem *s; - - ggtt->vm.insert_page(&ggtt->vm, addr, - ggtt->error_capture.start, - I915_CACHE_NONE, 0); - mb(); - - s = io_mapping_map_wc(&ggtt->iomap, - ggtt->error_capture.start, - PAGE_SIZE); - memset_io(s, x, PAGE_SIZE); - io_mapping_unmap(s); - - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - mb(); - ggtt->vm.clear_range(&ggtt->vm, ggtt->error_capture.start, PAGE_SIZE); - mutex_unlock(&ggtt->error_mutex); -#endif -} - -static struct sg_table * -i915_pages_create_for_stolen(struct drm_device *dev, - resource_size_t offset, resource_size_t size) -{ - struct drm_i915_private *i915 = to_i915(dev); - struct sg_table *st; - struct scatterlist *sg; - - GEM_BUG_ON(range_overflows(offset, size, resource_size(&i915->dsm))); - - /* We hide that we have no struct page backing our stolen object - * by wrapping the contiguous physical allocation with a fake - * dma mapping in a single scatterlist. - */ - - st = kmalloc(sizeof(*st), GFP_KERNEL); - if (st == NULL) - return ERR_PTR(-ENOMEM); - - if (sg_alloc_table(st, 1, GFP_KERNEL)) { - kfree(st); - return ERR_PTR(-ENOMEM); - } - - sg = st->sgl; - sg->offset = 0; - sg->length = size; - - sg_dma_address(sg) = (dma_addr_t)i915->dsm.start + offset; - sg_dma_len(sg) = size; - - return st; -} - -static int i915_gem_object_get_pages_stolen(struct drm_i915_gem_object *obj) -{ - struct drm_i915_private *i915 = to_i915(obj->base.dev); - struct sg_table *pages = - i915_pages_create_for_stolen(obj->base.dev, - obj->stolen->start, - obj->stolen->size); - if (IS_ERR(pages)) - return PTR_ERR(pages); - - dbg_poison(to_gt(i915)->ggtt, - sg_dma_address(pages->sgl), - sg_dma_len(pages->sgl), - POISON_INUSE); - - __i915_gem_object_set_pages(obj, pages, obj->stolen->size); - - return 0; -} - -static void i915_gem_object_put_pages_stolen(struct drm_i915_gem_object *obj, - struct sg_table *pages) -{ - struct drm_i915_private *i915 = to_i915(obj->base.dev); - /* Should only be called from i915_gem_object_release_stolen() */ - - dbg_poison(to_gt(i915)->ggtt, - sg_dma_address(pages->sgl), - sg_dma_len(pages->sgl), - POISON_FREE); - - sg_free_table(pages); - kfree(pages); -} - -static void -i915_gem_object_release_stolen(struct drm_i915_gem_object *obj) -{ - struct drm_i915_private *i915 = to_i915(obj->base.dev); - struct drm_mm_node *stolen = fetch_and_zero(&obj->stolen); - - GEM_BUG_ON(!stolen); - i915_gem_stolen_remove_node(i915, stolen); - kfree(stolen); - - i915_gem_object_release_memory_region(obj); -} - -static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = { - .name = "i915_gem_object_stolen", - .get_pages = i915_gem_object_get_pages_stolen, - .put_pages = i915_gem_object_put_pages_stolen, - .release = i915_gem_object_release_stolen, -}; - -static int __i915_gem_object_create_stolen(struct intel_memory_region *mem, - struct drm_i915_gem_object *obj, - struct drm_mm_node *stolen) -{ - static struct lock_class_key lock_class; - unsigned int cache_level; - unsigned int flags; - int err; - - /* - * Stolen objects are always physically contiguous since we just - * allocate one big block underneath using the drm_mm range allocator. - */ - flags = I915_BO_ALLOC_CONTIGUOUS; - - drm_gem_private_object_init(&mem->i915->drm, &obj->base, stolen->size); - i915_gem_object_init(obj, &i915_gem_object_stolen_ops, &lock_class, flags); - - obj->stolen = stolen; - obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT; - cache_level = HAS_LLC(mem->i915) ? I915_CACHE_LLC : I915_CACHE_NONE; - i915_gem_object_set_cache_coherency(obj, cache_level); - - if (WARN_ON(!i915_gem_object_trylock(obj, NULL))) - return -EBUSY; - - i915_gem_object_init_memory_region(obj, mem); - - err = i915_gem_object_pin_pages(obj); - if (err) - i915_gem_object_release_memory_region(obj); - i915_gem_object_unlock(obj); - - return err; -} - -static int _i915_gem_object_stolen_init(struct intel_memory_region *mem, - struct drm_i915_gem_object *obj, - resource_size_t size, - resource_size_t page_size, - unsigned int flags) -{ - struct drm_i915_private *i915 = mem->i915; - struct drm_mm_node *stolen; - int ret; - - if (!drm_mm_initialized(&i915->mm.stolen)) - return -ENODEV; - - if (size == 0) - return -EINVAL; - - stolen = kzalloc(sizeof(*stolen), GFP_KERNEL); - if (!stolen) - return -ENOMEM; - - ret = i915_gem_stolen_insert_node(i915, stolen, size, - mem->min_page_size); - if (ret) - goto err_free; - - ret = __i915_gem_object_create_stolen(mem, obj, stolen); - if (ret) - goto err_remove; - - return 0; - -err_remove: - i915_gem_stolen_remove_node(i915, stolen); -err_free: - kfree(stolen); - return ret; + return intel_region_ttm_init(mem); } struct drm_i915_gem_object * i915_gem_object_create_stolen(struct drm_i915_private *i915, resource_size_t size) { - return i915_gem_object_create_region(i915->mm.stolen_region, size, 0, 0); + return i915_gem_object_create_region(i915->mm.stolen_region, size, 0, + I915_BO_ALLOC_CONTIGUOUS); } static int init_stolen_smem(struct intel_memory_region *mem) @@ -731,16 +485,11 @@ static int init_stolen_smem(struct intel_memory_region *mem) return i915_gem_init_stolen(mem); } -static int release_stolen_smem(struct intel_memory_region *mem) -{ - i915_gem_cleanup_stolen(mem->i915); - return 0; -} - static const struct intel_memory_region_ops i915_region_stolen_smem_ops = { .init = init_stolen_smem, - .release = release_stolen_smem, - .init_object = _i915_gem_object_stolen_init, + .release = intel_region_ttm_fini, + .init_object = __i915_gem_ttm_object_init, + .init_object_in_place = i915_gem_ttm_object_init_in_place, }; static int init_stolen_lmem(struct intel_memory_region *mem) @@ -774,14 +523,14 @@ static int init_stolen_lmem(struct intel_memory_region *mem) static int release_stolen_lmem(struct intel_memory_region *mem) { io_mapping_fini(&mem->iomap); - i915_gem_cleanup_stolen(mem->i915); - return 0; + return intel_region_ttm_fini(mem); } static const struct intel_memory_region_ops i915_region_stolen_lmem_ops = { .init = init_stolen_lmem, .release = release_stolen_lmem, - .init_object = _i915_gem_object_stolen_init, + .init_object = __i915_gem_ttm_object_init, + .init_object_in_place = i915_gem_ttm_object_init_in_place, }; struct intel_memory_region * @@ -855,56 +604,10 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *i915, resource_size_t stolen_offset, resource_size_t size) { - struct intel_memory_region *mem = i915->mm.stolen_region; - struct drm_i915_gem_object *obj; - struct drm_mm_node *stolen; - int ret; - - if (!drm_mm_initialized(&i915->mm.stolen)) - return ERR_PTR(-ENODEV); - - drm_dbg(&i915->drm, - "creating preallocated stolen object: stolen_offset=%pa, size=%pa\n", - &stolen_offset, &size); - - /* KISS and expect everything to be page-aligned */ - if (GEM_WARN_ON(size == 0) || - GEM_WARN_ON(!IS_ALIGNED(size, mem->min_page_size)) || - GEM_WARN_ON(!IS_ALIGNED(stolen_offset, mem->min_page_size))) - return ERR_PTR(-EINVAL); - - stolen = kzalloc(sizeof(*stolen), GFP_KERNEL); - if (!stolen) - return ERR_PTR(-ENOMEM); - - stolen->start = stolen_offset; - stolen->size = size; - mutex_lock(&i915->mm.stolen_lock); - ret = drm_mm_reserve_node(&i915->mm.stolen, stolen); - mutex_unlock(&i915->mm.stolen_lock); - if (ret) - goto err_free; - - obj = i915_gem_object_alloc(); - if (!obj) { - ret = -ENOMEM; - goto err_stolen; - } - - ret = __i915_gem_object_create_stolen(mem, obj, stolen); - if (ret) - goto err_object_free; - - i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE); - return obj; - -err_object_free: - i915_gem_object_free(obj); -err_stolen: - i915_gem_stolen_remove_node(i915, stolen); -err_free: - kfree(stolen); - return ERR_PTR(ret); + return i915_gem_object_create_region_in_place(i915->mm.stolen_region, size, 0, + I915_BO_ALLOC_CONTIGUOUS, + stolen_offset, + stolen_offset + size); } struct drm_i915_gem_object * @@ -913,61 +616,25 @@ i915_gem_object_create_stolen_in_range(struct drm_i915_private *i915, resource_size_t alignment, u64 start, u64 end) { - struct intel_memory_region *mem = i915->mm.stolen_region; - struct drm_i915_gem_object *obj; - struct drm_mm_node *stolen; - int ret; - - if (!drm_mm_initialized(&i915->mm.stolen)) - return ERR_PTR(-ENODEV); - - /* KISS and expect everything to be page-aligned */ - if (GEM_WARN_ON(size == 0) || - GEM_WARN_ON(!IS_ALIGNED(size, mem->min_page_size)) || - GEM_WARN_ON(!IS_ALIGNED(alignment, mem->min_page_size))) - return ERR_PTR(-EINVAL); - - stolen = kzalloc(sizeof(*stolen), GFP_KERNEL); - if (!stolen) - return ERR_PTR(-ENOMEM); - - ret = i915_gem_stolen_insert_node_in_range(i915, stolen, size, - alignment, start, end); - if (ret) - goto err_free; - - obj = i915_gem_object_alloc(); - if (!obj) { - ret = -ENOMEM; - goto err_stolen; - } - - ret = __i915_gem_object_create_stolen(mem, obj, stolen); - if (ret) - goto err_object_free; - - i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE); - return obj; - -err_object_free: - i915_gem_object_free(obj); -err_stolen: - i915_gem_stolen_remove_node(i915, stolen); -err_free: - kfree(stolen); - return ERR_PTR(ret); + return i915_gem_object_create_region_in_place(i915->mm.stolen_region, size, 0, + I915_BO_ALLOC_CONTIGUOUS, + start, end); } u64 i915_gem_object_stolen_offset(const struct drm_i915_gem_object *obj) { + struct ttm_buffer_object *ttm_obj; if (!obj || !i915_gem_object_is_stolen(obj)) return 0; - return obj->stolen->start; + ttm_obj = i915_gem_to_ttm((struct drm_i915_gem_object *)obj); + + return ttm_obj->resource->start; } bool i915_gem_object_is_stolen(const struct drm_i915_gem_object *obj) { - return obj->ops == &i915_gem_object_stolen_ops; + return obj->mm.region->type == INTEL_MEMORY_STOLEN_SYSTEM || + obj->mm.region->type == INTEL_MEMORY_STOLEN_LOCAL; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.h b/drivers/gpu/drm/i915/gem/i915_gem_stolen.h index 494e90f130f4..921e51a5bbc4 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.h @@ -12,15 +12,6 @@ struct drm_i915_private; struct drm_mm_node; struct drm_i915_gem_object; -int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv, - struct drm_mm_node *node, u64 size, - unsigned alignment); -int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv, - struct drm_mm_node *node, u64 size, - unsigned alignment, u64 start, - u64 end); -void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv, - struct drm_mm_node *node); struct intel_memory_region * i915_gem_stolen_smem_setup(struct drm_i915_private *i915, u16 type, u16 instance); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index 35d1bde19267..b26bde6a4bb9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -1232,13 +1232,13 @@ int __i915_gem_ttm_object_init(struct intel_memory_region *mem, * * Return: 0 on success, negative error code on failure. */ -static int i915_gem_ttm_object_init_in_place(struct intel_memory_region *mem, - struct drm_i915_gem_object *obj, - resource_size_t size, - resource_size_t page_size, - unsigned int flags, - u64 start, - u64 end) +int i915_gem_ttm_object_init_in_place(struct intel_memory_region *mem, + struct drm_i915_gem_object *obj, + resource_size_t size, + resource_size_t page_size, + unsigned int flags, + u64 start, + u64 end) { struct ttm_place place; struct ttm_placement placement = { diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.h b/drivers/gpu/drm/i915/gem/i915_gem_ttm.h index 9d698ad00853..f8ff52d81072 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.h @@ -48,6 +48,13 @@ int __i915_gem_ttm_object_init(struct intel_memory_region *mem, resource_size_t size, resource_size_t page_size, unsigned int flags); +int i915_gem_ttm_object_init_in_place(struct intel_memory_region *mem, + struct drm_i915_gem_object *obj, + resource_size_t size, + resource_size_t page_size, + unsigned int flags, + u64 start, + u64 end); /* Internal I915 TTM declarations and definitions below. */