1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
2 | /* |
3 | * Copyright (C) 2023 Loongson Technology Corporation Limited |
4 | */ |
5 | |
6 | #ifndef __LSDC_TTM_H__ |
7 | #define __LSDC_TTM_H__ |
8 | |
9 | #include <linux/container_of.h> |
10 | #include <linux/iosys-map.h> |
11 | #include <linux/list.h> |
12 | |
13 | #include <drm/drm_gem.h> |
14 | #include <drm/ttm/ttm_bo.h> |
15 | #include <drm/ttm/ttm_placement.h> |
16 | #include <drm/ttm/ttm_range_manager.h> |
17 | #include <drm/ttm/ttm_tt.h> |
18 | |
19 | #define LSDC_GEM_DOMAIN_SYSTEM 0x1 |
20 | #define LSDC_GEM_DOMAIN_GTT 0x2 |
21 | #define LSDC_GEM_DOMAIN_VRAM 0x4 |
22 | |
23 | struct lsdc_bo { |
24 | struct ttm_buffer_object tbo; |
25 | |
26 | /* Protected by gem.mutex */ |
27 | struct list_head list; |
28 | |
29 | struct iosys_map map; |
30 | |
31 | unsigned int vmap_count; |
32 | /* cross device driver sharing reference count */ |
33 | unsigned int sharing_count; |
34 | |
35 | struct ttm_bo_kmap_obj kmap; |
36 | void *kptr; |
37 | bool is_iomem; |
38 | |
39 | size_t size; |
40 | |
41 | u32 initial_domain; |
42 | |
43 | struct ttm_placement placement; |
44 | struct ttm_place placements[4]; |
45 | }; |
46 | |
47 | static inline struct ttm_buffer_object *to_ttm_bo(struct drm_gem_object *gem) |
48 | { |
49 | return container_of(gem, struct ttm_buffer_object, base); |
50 | } |
51 | |
52 | static inline struct lsdc_bo *to_lsdc_bo(struct ttm_buffer_object *tbo) |
53 | { |
54 | return container_of(tbo, struct lsdc_bo, tbo); |
55 | } |
56 | |
57 | static inline struct lsdc_bo *gem_to_lsdc_bo(struct drm_gem_object *gem) |
58 | { |
59 | return container_of(gem, struct lsdc_bo, tbo.base); |
60 | } |
61 | |
62 | const char *lsdc_mem_type_to_str(uint32_t mem_type); |
63 | const char *lsdc_domain_to_str(u32 domain); |
64 | |
65 | struct lsdc_bo *lsdc_bo_create(struct drm_device *ddev, |
66 | u32 domain, |
67 | size_t size, |
68 | bool kernel, |
69 | struct sg_table *sg, |
70 | struct dma_resv *resv); |
71 | |
72 | struct lsdc_bo *lsdc_bo_create_kernel_pinned(struct drm_device *ddev, |
73 | u32 domain, |
74 | size_t size); |
75 | |
76 | void lsdc_bo_free_kernel_pinned(struct lsdc_bo *lbo); |
77 | |
78 | int lsdc_bo_reserve(struct lsdc_bo *lbo); |
79 | void lsdc_bo_unreserve(struct lsdc_bo *lbo); |
80 | |
81 | int lsdc_bo_pin(struct lsdc_bo *lbo, u32 domain, u64 *gpu_addr); |
82 | void lsdc_bo_unpin(struct lsdc_bo *lbo); |
83 | |
84 | void lsdc_bo_ref(struct lsdc_bo *lbo); |
85 | void lsdc_bo_unref(struct lsdc_bo *lbo); |
86 | |
87 | u64 lsdc_bo_gpu_offset(struct lsdc_bo *lbo); |
88 | size_t lsdc_bo_size(struct lsdc_bo *lbo); |
89 | |
90 | int lsdc_bo_kmap(struct lsdc_bo *lbo); |
91 | void lsdc_bo_kunmap(struct lsdc_bo *lbo); |
92 | void lsdc_bo_clear(struct lsdc_bo *lbo); |
93 | |
94 | int lsdc_bo_evict_vram(struct drm_device *ddev); |
95 | |
96 | int lsdc_ttm_init(struct lsdc_device *ldev); |
97 | void lsdc_ttm_debugfs_init(struct lsdc_device *ldev); |
98 | |
99 | #endif |
100 | |