Line data    Source code

       1             : /* SPDX-License-Identifier: GPL-2.0 OR MIT */
       2             : 
       3             : #ifndef _TTM_RANGE_MANAGER_H_
       4             : #define _TTM_RANGE_MANAGER_H_
       5             : 
       6             : #include <drm/ttm/ttm_resource.h>
       7             : #include <drm/ttm/ttm_device.h>
       8             : #include <drm/drm_mm.h>
       9             : 
      10             : /**
      11             :  * struct ttm_range_mgr_node
      12             :  *
      13             :  * @base: base clase we extend
      14             :  * @mm_nodes: MM nodes, usually 1
      15             :  *
      16             :  * Extending the ttm_resource object to manage an address space allocation with
      17             :  * one or more drm_mm_nodes.
      18             :  */
      19             : struct ttm_range_mgr_node {
      20             :         struct ttm_resource base;
      21             :         struct drm_mm_node mm_nodes[];
      22             : };
      23             : 
      24             : /**
      25             :  * to_ttm_range_mgr_node
      26             :  *
      27             :  * @res: the resource to upcast
      28             :  *
      29             :  * Upcast the ttm_resource object into a ttm_range_mgr_node object.
      30             :  */
      31             : static inline struct ttm_range_mgr_node *
      32             : to_ttm_range_mgr_node(struct ttm_resource *res)
      33             : {
      34           0 :         return container_of(res, struct ttm_range_mgr_node, base);
      35             : }
      36             : 
      37             : int ttm_range_man_init_nocheck(struct ttm_device *bdev,
      38             :                        unsigned type, bool use_tt,
      39             :                        unsigned long p_size);
      40             : int ttm_range_man_fini_nocheck(struct ttm_device *bdev,
      41             :                        unsigned type);
      42             : static __always_inline int ttm_range_man_init(struct ttm_device *bdev,
      43             :                        unsigned int type, bool use_tt,
      44             :                        unsigned long p_size)
      45             : {
      46             :         BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES);
      47           0 :         return ttm_range_man_init_nocheck(bdev, type, use_tt, p_size);
      48             : }
      49             : 
      50             : static __always_inline int ttm_range_man_fini(struct ttm_device *bdev,
      51             :                        unsigned int type)
      52             : {
      53             :         BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES);
      54           0 :         return ttm_range_man_fini_nocheck(bdev, type);
      55             : }
      56             : #endif