linux/drivers/gpu/drm/i915/gem/i915_gem_region.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2019 Intel Corporation
 */

#include <uapi/drm/i915_drm.h>

#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)
{ … }

void i915_gem_object_release_memory_region(struct drm_i915_gem_object *obj)
{ … }

static struct drm_i915_gem_object *
__i915_gem_object_create_region(struct intel_memory_region *mem,
				resource_size_t offset,
				resource_size_t size,
				resource_size_t page_size,
				unsigned int flags)
{ … }

struct drm_i915_gem_object *
i915_gem_object_create_region(struct intel_memory_region *mem,
			      resource_size_t size,
			      resource_size_t page_size,
			      unsigned int flags)
{ … }

struct drm_i915_gem_object *
i915_gem_object_create_region_at(struct intel_memory_region *mem,
				 resource_size_t offset,
				 resource_size_t size,
				 unsigned int flags)
{ … }

/**
 * i915_gem_process_region - Iterate over all objects of a region using ops
 * to process and optionally skip objects
 * @mr: The memory region
 * @apply: ops and private data
 *
 * This function can be used to iterate over the regions object list,
 * checking whether to skip objects, and, if not, lock the objects and
 * process them using the supplied ops. Note that this function temporarily
 * removes objects from the region list while iterating, so that if run
 * concurrently with itself may not iterate over all objects.
 *
 * Return: 0 if successful, negative error code on failure.
 */
int i915_gem_process_region(struct intel_memory_region *mr,
			    struct i915_gem_apply_to_region *apply)
{ … }