97 lines
2.4 KiB
C
97 lines
2.4 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 "intel_memory_region.h"
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#include "gem/i915_gem_region.h"
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#include "gem/i915_gem_lmem.h"
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#include "i915_drv.h"
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const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = {
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.flags = I915_GEM_OBJECT_HAS_IOMEM,
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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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/* XXX: Time to vfunc your life up? */
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void __iomem *
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i915_gem_object_lmem_io_map_page(struct drm_i915_gem_object *obj,
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unsigned long n)
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{
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resource_size_t offset;
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offset = i915_gem_object_get_dma_address(obj, n);
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offset -= obj->mm.region->region.start;
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return io_mapping_map_wc(&obj->mm.region->iomap, offset, PAGE_SIZE);
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}
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void __iomem *
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i915_gem_object_lmem_io_map_page_atomic(struct drm_i915_gem_object *obj,
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unsigned long n)
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{
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resource_size_t offset;
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offset = i915_gem_object_get_dma_address(obj, n);
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offset -= obj->mm.region->region.start;
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return io_mapping_map_atomic_wc(&obj->mm.region->iomap, offset);
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}
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void __iomem *
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i915_gem_object_lmem_io_map(struct drm_i915_gem_object *obj,
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unsigned long n,
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unsigned long size)
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{
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resource_size_t offset;
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GEM_BUG_ON(!i915_gem_object_is_contiguous(obj));
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offset = i915_gem_object_get_dma_address(obj, n);
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offset -= obj->mm.region->region.start;
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return io_mapping_map_wc(&obj->mm.region->iomap, offset, size);
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}
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bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
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{
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return obj->ops == &i915_gem_lmem_obj_ops;
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}
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struct drm_i915_gem_object *
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i915_gem_object_create_lmem(struct drm_i915_private *i915,
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resource_size_t size,
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unsigned int flags)
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{
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return i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_LMEM],
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size, flags);
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}
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struct drm_i915_gem_object *
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__i915_gem_lmem_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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static struct lock_class_key lock_class;
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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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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, &i915_gem_lmem_obj_ops, &lock_class);
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obj->read_domains = I915_GEM_DOMAIN_WC | 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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