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/dma-resv.h>
10#include "etnaviv_cmdbuf.h"
11#include "etnaviv_drv.h"
12
13struct dma_fence;
14struct etnaviv_gem_ops;
15struct etnaviv_gem_object;
16
17struct etnaviv_gem_userptr {
18 uintptr_t ptr;
19 struct mm_struct *mm;
20 bool ro;
21};
22
23struct 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_context *context;
29 struct drm_mm_node vram_node;
30 unsigned int use;
31 u32 iova;
32};
33
34struct etnaviv_gem_object {
35 struct drm_gem_object base;
36 const struct etnaviv_gem_ops *ops;
37 struct mutex lock;
38
39 /*
40 * The actual size that is visible to the GPU, not necessarily
41 * PAGE_SIZE aligned, but should be aligned to GPU page size.
42 */
43 u32 size;
44 u32 flags;
45
46 struct list_head gem_node;
47 atomic_t gpu_active;
48
49 struct page **pages;
50 struct sg_table *sgt;
51 void *vaddr;
52
53 struct list_head vram_list;
54
55 /* cache maintenance */
56 u32 last_cpu_prep_op;
57
58 struct etnaviv_gem_userptr userptr;
59};
60
61static inline
62struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
63{
64 return container_of(obj, struct etnaviv_gem_object, base);
65}
66
67struct etnaviv_gem_ops {
68 int (*get_pages)(struct etnaviv_gem_object *);
69 void (*release)(struct etnaviv_gem_object *);
70 void *(*vmap)(struct etnaviv_gem_object *);
71 int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
72};
73
74static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
75{
76 return atomic_read(v: &etnaviv_obj->gpu_active) != 0;
77}
78
79#define MAX_CMDS 4
80
81struct etnaviv_gem_submit_bo {
82 u32 flags;
83 u64 va;
84 struct etnaviv_gem_object *obj;
85 struct etnaviv_vram_mapping *mapping;
86};
87
88/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
89 * associated with the cmdstream submission for synchronization (and
90 * make it easier to unwind when things go wrong, etc).
91 */
92struct etnaviv_gem_submit {
93 struct drm_sched_job sched_job;
94 struct kref refcount;
95 struct etnaviv_file_private *ctx;
96 struct etnaviv_gpu *gpu;
97 struct etnaviv_iommu_context *mmu_context, *prev_mmu_context;
98 struct dma_fence *out_fence;
99 int out_fence_id;
100 struct list_head node; /* GPU active submit list */
101 struct etnaviv_cmdbuf cmdbuf;
102 struct pid *pid; /* submitting process */
103 u32 exec_state;
104 u32 flags;
105 unsigned int nr_pmrs;
106 struct etnaviv_perfmon_request *pmrs;
107 unsigned int nr_bos;
108 struct etnaviv_gem_submit_bo bos[];
109 /* No new members here, the previous one is variable-length! */
110};
111
112void etnaviv_submit_put(struct etnaviv_gem_submit * submit);
113
114int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
115 struct drm_etnaviv_timespec *timeout);
116int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
117 const struct etnaviv_gem_ops *ops, struct etnaviv_gem_object **res);
118void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
119struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
120void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
121
122struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
123 struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context,
124 u64 va);
125void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
126
127#endif /* __ETNAVIV_GEM_H__ */
128

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source code of linux/drivers/gpu/drm/etnaviv/etnaviv_gem.h