91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* Copyright © 2017 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#include "i915_drv.h"
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#include "i915_gem_object.h"
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#include "i915_globals.h"
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static struct i915_global_object {
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struct i915_global base;
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struct kmem_cache *slab_objects;
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} global;
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struct drm_i915_gem_object *i915_gem_object_alloc(void)
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{
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return kmem_cache_zalloc(global.slab_objects, GFP_KERNEL);
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}
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void i915_gem_object_free(struct drm_i915_gem_object *obj)
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{
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return kmem_cache_free(global.slab_objects, obj);
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}
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/**
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* Mark up the object's coherency levels for a given cache_level
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* @obj: #drm_i915_gem_object
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* @cache_level: cache level
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*/
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void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj,
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unsigned int cache_level)
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{
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obj->cache_level = cache_level;
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if (cache_level != I915_CACHE_NONE)
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obj->cache_coherent = (I915_BO_CACHE_COHERENT_FOR_READ |
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I915_BO_CACHE_COHERENT_FOR_WRITE);
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else if (HAS_LLC(to_i915(obj->base.dev)))
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obj->cache_coherent = I915_BO_CACHE_COHERENT_FOR_READ;
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else
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obj->cache_coherent = 0;
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obj->cache_dirty =
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!(obj->cache_coherent & I915_BO_CACHE_COHERENT_FOR_WRITE);
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}
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static void i915_global_objects_shrink(void)
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{
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kmem_cache_shrink(global.slab_objects);
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}
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static void i915_global_objects_exit(void)
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{
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kmem_cache_destroy(global.slab_objects);
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}
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static struct i915_global_object global = { {
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.shrink = i915_global_objects_shrink,
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.exit = i915_global_objects_exit,
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} };
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int __init i915_global_objects_init(void)
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{
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global.slab_objects =
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KMEM_CACHE(drm_i915_gem_object, SLAB_HWCACHE_ALIGN);
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if (!global.slab_objects)
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return -ENOMEM;
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i915_global_register(&global.base);
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return 0;
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}
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