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// SPDX-License-Identifier: MIT
/*
* Copyright © 2019 Intel Corporation
*/
#include "intel_memory_region.h"
#include "i915_gem_region.h"
#include "i915_drv.h"
#include "i915_trace.h"
void i915_gem_object_init_memory_region(struct drm_i915_gem_object *obj,
struct intel_memory_region *mem)
{
obj->mm.region = intel_memory_region_get(mem);
if (obj->base.size <= mem->min_page_size)
obj->flags |= I915_BO_ALLOC_CONTIGUOUS;
mutex_lock(&mem->objects.lock);
if (obj->flags & I915_BO_ALLOC_VOLATILE)
list_add(&obj->mm.region_link, &mem->objects.purgeable);
else
list_add(&obj->mm.region_link, &mem->objects.list);
mutex_unlock(&mem->objects.lock);
}
void i915_gem_object_release_memory_region(struct drm_i915_gem_object *obj)
{
struct intel_memory_region *mem = obj->mm.region;
mutex_lock(&mem->objects.lock);
list_del(&obj->mm.region_link);
mutex_unlock(&mem->objects.lock);
intel_memory_region_put(mem);
}
struct drm_i915_gem_object *
i915_gem_object_create_region(struct intel_memory_region *mem,
resource_size_t size,
unsigned int flags)
{
struct drm_i915_gem_object *obj;
int err;
/*
* NB: Our use of resource_size_t for the size stems from using struct
* resource for the mem->region. We might need to revisit this in the
* future.
*/
GEM_BUG_ON(flags & ~I915_BO_ALLOC_FLAGS);
if (!mem)
return ERR_PTR(-ENODEV);
size = round_up(size, mem->min_page_size);
GEM_BUG_ON(!size);
GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_MIN_ALIGNMENT));
if (i915_gem_object_size_2big(size))
return ERR_PTR(-E2BIG);
obj = i915_gem_object_alloc();
if (!obj)
return ERR_PTR(-ENOMEM);
err = mem->ops->init_object(mem, obj, size, flags);
if (err)
goto err_object_free;
trace_i915_gem_object_create(obj);
return obj;
err_object_free:
i915_gem_object_free(obj);
return ERR_PTR(err);
}
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