1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2015-2018 Etnaviv Project
4 */
5
6 #ifndef __ETNAVIV_GEM_H__
7 #define __ETNAVIV_GEM_H__
8
9 #include <linux/reservation.h>
10 #include "etnaviv_cmdbuf.h"
11 #include "etnaviv_drv.h"
12
13 struct dma_fence;
14 struct etnaviv_gem_ops;
15 struct etnaviv_gem_object;
16
17 struct etnaviv_gem_userptr {
18 uintptr_t ptr;
19 struct mm_struct *mm;
20 bool ro;
21 };
22
23 struct etnaviv_vram_mapping {
24 struct list_head obj_node;
25 struct list_head scan_node;
26 struct list_head mmu_node;
27 struct etnaviv_gem_object *object;
28 struct etnaviv_iommu *mmu;
29 struct drm_mm_node vram_node;
30 unsigned int use;
31 u32 iova;
32 };
33
34 struct etnaviv_gem_object {
35 struct drm_gem_object base;
36 const struct etnaviv_gem_ops *ops;
37 struct mutex lock;
38
39 u32 flags;
40
41 struct list_head gem_node;
42 struct etnaviv_gpu *gpu; /* non-null if active */
43 atomic_t gpu_active;
44 u32 access;
45
46 struct page **pages;
47 struct sg_table *sgt;
48 void *vaddr;
49
50 /* normally (resv == &_resv) except for imported bo's */
51 struct reservation_object *resv;
52 struct reservation_object _resv;
53
54 struct list_head vram_list;
55
56 /* cache maintenance */
57 u32 last_cpu_prep_op;
58
59 struct etnaviv_gem_userptr userptr;
60 };
61
62 static inline
to_etnaviv_bo(struct drm_gem_object * obj)63 struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
64 {
65 return container_of(obj, struct etnaviv_gem_object, base);
66 }
67
68 struct etnaviv_gem_ops {
69 int (*get_pages)(struct etnaviv_gem_object *);
70 void (*release)(struct etnaviv_gem_object *);
71 void *(*vmap)(struct etnaviv_gem_object *);
72 int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
73 };
74
is_active(struct etnaviv_gem_object * etnaviv_obj)75 static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
76 {
77 return atomic_read(&etnaviv_obj->gpu_active) != 0;
78 }
79
80 #define MAX_CMDS 4
81
82 struct etnaviv_gem_submit_bo {
83 u32 flags;
84 struct etnaviv_gem_object *obj;
85 struct etnaviv_vram_mapping *mapping;
86 struct dma_fence *excl;
87 unsigned int nr_shared;
88 struct dma_fence **shared;
89 };
90
91 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
92 * associated with the cmdstream submission for synchronization (and
93 * make it easier to unwind when things go wrong, etc).
94 */
95 struct etnaviv_gem_submit {
96 struct drm_sched_job sched_job;
97 struct kref refcount;
98 struct etnaviv_gpu *gpu;
99 struct dma_fence *out_fence, *in_fence;
100 int out_fence_id;
101 struct list_head node; /* GPU active submit list */
102 struct etnaviv_cmdbuf cmdbuf;
103 bool runtime_resumed;
104 u32 exec_state;
105 u32 flags;
106 unsigned int nr_pmrs;
107 struct etnaviv_perfmon_request *pmrs;
108 unsigned int nr_bos;
109 struct etnaviv_gem_submit_bo bos[0];
110 /* No new members here, the previous one is variable-length! */
111 };
112
113 void etnaviv_submit_put(struct etnaviv_gem_submit * submit);
114
115 int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
116 struct timespec *timeout);
117 int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
118 struct reservation_object *robj, const struct etnaviv_gem_ops *ops,
119 struct etnaviv_gem_object **res);
120 void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
121 struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
122 void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
123
124 struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
125 struct drm_gem_object *obj, struct etnaviv_gpu *gpu);
126 void etnaviv_gem_mapping_reference(struct etnaviv_vram_mapping *mapping);
127 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
128
129 #endif /* __ETNAVIV_GEM_H__ */
130
