2f0b97ca02
Some kernel internal objects may need to be allocated as a contiguous block, also thinking ahead the various kernel io_mapping interfaces seem to expect it, although this is purely a limitation in the kernel API...so perhaps something to be improved. Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Michael J Ruhl <michael.j.ruhl@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20191008160116.18379-3-matthew.auld@intel.com
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#include "gem/i915_gem_region.h"
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#include "intel_memory_region.h"
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#include "mock_region.h"
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static const struct drm_i915_gem_object_ops mock_region_obj_ops = {
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.get_pages = i915_gem_object_get_pages_buddy,
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.put_pages = i915_gem_object_put_pages_buddy,
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.release = i915_gem_object_release_memory_region,
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};
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static struct drm_i915_gem_object *
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mock_object_create(struct intel_memory_region *mem,
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resource_size_t size,
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unsigned int flags)
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{
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struct drm_i915_private *i915 = mem->i915;
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struct drm_i915_gem_object *obj;
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if (size > BIT(mem->mm.max_order) * mem->mm.chunk_size)
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return ERR_PTR(-E2BIG);
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obj = i915_gem_object_alloc();
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if (!obj)
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return ERR_PTR(-ENOMEM);
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drm_gem_private_object_init(&i915->drm, &obj->base, size);
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i915_gem_object_init(obj, &mock_region_obj_ops);
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obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
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i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
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i915_gem_object_init_memory_region(obj, mem, flags);
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return obj;
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}
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static const struct intel_memory_region_ops mock_region_ops = {
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.init = intel_memory_region_init_buddy,
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.release = intel_memory_region_release_buddy,
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.create_object = mock_object_create,
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};
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struct intel_memory_region *
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mock_region_create(struct drm_i915_private *i915,
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resource_size_t start,
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resource_size_t size,
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resource_size_t min_page_size,
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resource_size_t io_start)
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{
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return intel_memory_region_create(i915, start, size, min_page_size,
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io_start, &mock_region_ops);
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}
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