linux/drivers/gpu/drm/i915/gem/i915_gem_create.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2020 Intel Corporation
 */

#include <drm/drm_fourcc.h>

#include "display/intel_display.h"
#include "gem/i915_gem_ioctls.h"
#include "gem/i915_gem_lmem.h"
#include "gem/i915_gem_region.h"
#include "pxp/intel_pxp.h"

#include "i915_drv.h"
#include "i915_gem_create.h"
#include "i915_trace.h"
#include "i915_user_extensions.h"

static u32 object_max_page_size(struct intel_memory_region **placements,
				unsigned int n_placements)
{ … }

static int object_set_placements(struct drm_i915_gem_object *obj,
				 struct intel_memory_region **placements,
				 unsigned int n_placements)
{ … }

static int i915_gem_publish(struct drm_i915_gem_object *obj,
			    struct drm_file *file,
			    u64 *size_p,
			    u32 *handle_p)
{ … }

static struct drm_i915_gem_object *
__i915_gem_object_create_user_ext(struct drm_i915_private *i915, u64 size,
				  struct intel_memory_region **placements,
				  unsigned int n_placements,
				  unsigned int ext_flags)
{ … }

/**
 * __i915_gem_object_create_user - Creates a new object using the same path as
 *                                 DRM_I915_GEM_CREATE_EXT
 * @i915: i915 private
 * @size: size of the buffer, in bytes
 * @placements: possible placement regions, in priority order
 * @n_placements: number of possible placement regions
 *
 * This function is exposed primarily for selftests and does very little
 * error checking.  It is assumed that the set of placement regions has
 * already been verified to be valid.
 */
struct drm_i915_gem_object *
__i915_gem_object_create_user(struct drm_i915_private *i915, u64 size,
			      struct intel_memory_region **placements,
			      unsigned int n_placements)
{ … }

int
i915_gem_dumb_create(struct drm_file *file,
		     struct drm_device *dev,
		     struct drm_mode_create_dumb *args)
{ … }

/**
 * i915_gem_create_ioctl - Creates a new mm object and returns a handle to it.
 * @dev: drm device pointer
 * @data: ioctl data blob
 * @file: drm file pointer
 */
int
i915_gem_create_ioctl(struct drm_device *dev, void *data,
		      struct drm_file *file)
{ … }

struct create_ext { … };

static void repr_placements(char *buf, size_t size,
			    struct intel_memory_region **placements,
			    int n_placements)
{ … }

static int set_placements(struct drm_i915_gem_create_ext_memory_regions *args,
			  struct create_ext *ext_data)
{ … }

static int ext_set_placements(struct i915_user_extension __user *base,
			      void *data)
{ … }

static int ext_set_protected(struct i915_user_extension __user *base, void *data)
{ … }

static int ext_set_pat(struct i915_user_extension __user *base, void *data)
{ … }

static const i915_user_extension_fn create_extensions[] = …;

#define PAT_INDEX_NOT_SET …
/**
 * i915_gem_create_ext_ioctl - Creates a new mm object and returns a handle to it.
 * @dev: drm device pointer
 * @data: ioctl data blob
 * @file: drm file pointer
 */
int
i915_gem_create_ext_ioctl(struct drm_device *dev, void *data,
			  struct drm_file *file)
{ … }