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 10 static 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 *mem) 14 { 15 mem->mm_node = kzalloc(sizeof(*mem), GFP_KERNEL); 16 if (!mem->mm_node) 17 return -ENOMEM; 18 19 ttm_resource_init(bo, place, mem->mm_node); 20 return 0; 21 } 22 23 static void ttm_sys_man_free(struct ttm_resource_manager *man, 24 struct ttm_resource *mem) 25 { 26 kfree(mem->mm_node); 27 } 28 29 static const struct ttm_resource_manager_func ttm_sys_manager_func = { 30 .alloc = ttm_sys_man_alloc, 31 .free = ttm_sys_man_free, 32 }; 33 34 void 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