LXR linux/drivers/gpu/drm/ttm/ttm_sys

   1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
   2
   3#include <drm/ttm/ttm_resource.h>
   4#include <drm/ttm/ttm_device.h>
   5#include <drm/ttm/ttm_placement.h>
   6#include <linux/slab.h>
   7
   8#include "ttm_module.h"
   9
  10static int ttm_sys_man_alloc(struct ttm_resource_manager *man,
  11                             struct ttm_buffer_object *bo,
  12                             const struct ttm_place *place,
  13                             struct ttm_resource **res)
  14{
  15        *res = kzalloc(sizeof(**res), GFP_KERNEL);
  16        if (!*res)
  17                return -ENOMEM;
  18
  19        ttm_resource_init(bo, place, *res);
  20        return 0;
  21}
  22
  23static void ttm_sys_man_free(struct ttm_resource_manager *man,
  24                             struct ttm_resource *res)
  25{
  26        kfree(res);
  27}
  28
  29static const struct ttm_resource_manager_func ttm_sys_manager_func = {
  30        .alloc = ttm_sys_man_alloc,
  31        .free = ttm_sys_man_free,
  32};
  33
  34void ttm_sys_man_init(struct ttm_device *bdev)
  35{
  36        struct ttm_resource_manager *man = &bdev->sysman;
  37
  38        /*
  39         * Initialize the system memory buffer type.
  40         * Other types need to be driver / IOCTL initialized.
  41         */
  42        man->use_tt = true;
  43        man->func = &ttm_sys_manager_func;
  44
  45        ttm_resource_manager_init(man, 0);
  46        ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, man);
  47        ttm_resource_manager_set_used(man, true);
  48}
  49