xref: /linux/drivers/accel/ivpu/ivpu_gem.h (revision fd7d598270724cc787982ea48bbe17ad383a8b7f)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2020-2023 Intel Corporation
4  */
5 #ifndef __IVPU_GEM_H__
6 #define __IVPU_GEM_H__
7 
8 #include <drm/drm_gem.h>
9 #include <drm/drm_mm.h>
10 
11 struct dma_buf;
12 struct ivpu_bo_ops;
13 struct ivpu_file_priv;
14 
15 struct ivpu_bo {
16 	struct drm_gem_object base;
17 	const struct ivpu_bo_ops *ops;
18 
19 	struct ivpu_mmu_context *ctx;
20 	struct list_head ctx_node;
21 	struct drm_mm_node mm_node;
22 
23 	struct mutex lock; /* Protects: pages, sgt, mmu_mapped */
24 	struct sg_table *sgt;
25 	struct page **pages;
26 	bool mmu_mapped;
27 
28 	void *kvaddr;
29 	u64 vpu_addr;
30 	u32 handle;
31 	u32 flags;
32 	uintptr_t user_ptr;
33 	u32 job_status;
34 };
35 
36 enum ivpu_bo_type {
37 	IVPU_BO_TYPE_SHMEM = 1,
38 	IVPU_BO_TYPE_INTERNAL,
39 	IVPU_BO_TYPE_PRIME,
40 };
41 
42 struct ivpu_bo_ops {
43 	enum ivpu_bo_type type;
44 	const char *name;
45 	int (*alloc_pages)(struct ivpu_bo *bo);
46 	void (*free_pages)(struct ivpu_bo *bo);
47 	int (*map_pages)(struct ivpu_bo *bo);
48 	void (*unmap_pages)(struct ivpu_bo *bo);
49 };
50 
51 int ivpu_bo_pin(struct ivpu_bo *bo);
52 void ivpu_bo_remove_all_bos_from_context(struct ivpu_mmu_context *ctx);
53 void ivpu_bo_list(struct drm_device *dev, struct drm_printer *p);
54 void ivpu_bo_list_print(struct drm_device *dev);
55 
56 struct ivpu_bo *
57 ivpu_bo_alloc_internal(struct ivpu_device *vdev, u64 vpu_addr, u64 size, u32 flags);
58 void ivpu_bo_free_internal(struct ivpu_bo *bo);
59 struct drm_gem_object *ivpu_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf);
60 void ivpu_bo_unmap_sgt_and_remove_from_context(struct ivpu_bo *bo);
61 
62 int ivpu_bo_create_ioctl(struct drm_device *dev, void *data, struct drm_file *file);
63 int ivpu_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file);
64 int ivpu_bo_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file);
65 
66 static inline struct ivpu_bo *to_ivpu_bo(struct drm_gem_object *obj)
67 {
68 	return container_of(obj, struct ivpu_bo, base);
69 }
70 
71 static inline void *ivpu_bo_vaddr(struct ivpu_bo *bo)
72 {
73 	return bo->kvaddr;
74 }
75 
76 static inline size_t ivpu_bo_size(struct ivpu_bo *bo)
77 {
78 	return bo->base.size;
79 }
80 
81 static inline struct page *ivpu_bo_get_page(struct ivpu_bo *bo, u64 offset)
82 {
83 	if (offset > ivpu_bo_size(bo) || !bo->pages)
84 		return NULL;
85 
86 	return bo->pages[offset / PAGE_SIZE];
87 }
88 
89 static inline u32 ivpu_bo_cache_mode(struct ivpu_bo *bo)
90 {
91 	return bo->flags & DRM_IVPU_BO_CACHE_MASK;
92 }
93 
94 static inline bool ivpu_bo_is_snooped(struct ivpu_bo *bo)
95 {
96 	return ivpu_bo_cache_mode(bo) == DRM_IVPU_BO_CACHED;
97 }
98 
99 static inline pgprot_t ivpu_bo_pgprot(struct ivpu_bo *bo, pgprot_t prot)
100 {
101 	if (bo->flags & DRM_IVPU_BO_WC)
102 		return pgprot_writecombine(prot);
103 
104 	if (bo->flags & DRM_IVPU_BO_UNCACHED)
105 		return pgprot_noncached(prot);
106 
107 	return prot;
108 }
109 
110 static inline struct ivpu_device *ivpu_bo_to_vdev(struct ivpu_bo *bo)
111 {
112 	return to_ivpu_device(bo->base.dev);
113 }
114 
115 static inline void *ivpu_to_cpu_addr(struct ivpu_bo *bo, u32 vpu_addr)
116 {
117 	if (vpu_addr < bo->vpu_addr)
118 		return NULL;
119 
120 	if (vpu_addr >= (bo->vpu_addr + ivpu_bo_size(bo)))
121 		return NULL;
122 
123 	return ivpu_bo_vaddr(bo) + (vpu_addr - bo->vpu_addr);
124 }
125 
126 static inline u32 cpu_to_vpu_addr(struct ivpu_bo *bo, void *cpu_addr)
127 {
128 	if (cpu_addr < ivpu_bo_vaddr(bo))
129 		return 0;
130 
131 	if (cpu_addr >= (ivpu_bo_vaddr(bo) + ivpu_bo_size(bo)))
132 		return 0;
133 
134 	return bo->vpu_addr + (cpu_addr - ivpu_bo_vaddr(bo));
135 }
136 
137 #endif /* __IVPU_GEM_H__ */
138