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	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	struct list_head vram_list;
51
52	/* cache maintenance */
53	u32 last_cpu_prep_op;
54
55	struct etnaviv_gem_userptr userptr;
56};
57
58static inline
59struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
60{
61	return container_of(obj, struct etnaviv_gem_object, base);
62}
63
64struct etnaviv_gem_ops {
65	int (*get_pages)(struct etnaviv_gem_object *);
66	void (*release)(struct etnaviv_gem_object *);
67	void *(*vmap)(struct etnaviv_gem_object *);
68	int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
69};
70
71static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
72{
73	return atomic_read(&etnaviv_obj->gpu_active) != 0;
74}
75
76#define MAX_CMDS 4
77
78struct etnaviv_gem_submit_bo {
79	u32 flags;
80	u64 va;
81	struct etnaviv_gem_object *obj;
82	struct etnaviv_vram_mapping *mapping;
83	struct dma_fence *excl;
84	unsigned int nr_shared;
85	struct dma_fence **shared;
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, *in_fence;
99	int out_fence_id;
100	struct list_head node; /* GPU active submit list */
101	struct etnaviv_cmdbuf cmdbuf;
102	bool runtime_resumed;
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