1/*
 2 * Copyright 2018 Advanced Micro Devices, Inc.
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining a
 5 * copy of this software and associated documentation files (the "Software"),
 6 * to deal in the Software without restriction, including without limitation
 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 8 * and/or sell copies of the Software, and to permit persons to whom the
 9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23#ifndef __AMDGPU_CTX_H__
24#define __AMDGPU_CTX_H__
25
26#include "amdgpu_ring.h"
27
28struct drm_device;
29struct drm_file;
30struct amdgpu_fpriv;
31
32#define AMDGPU_MAX_ENTITY_NUM 4
33
34struct amdgpu_ctx_entity {
35	uint64_t		sequence;
36	struct drm_sched_entity	entity;
37	struct dma_fence	*fences[];
38};
39
40struct amdgpu_ctx {
41	struct kref			refcount;
42	struct amdgpu_device		*adev;
43	unsigned			reset_counter;
44	unsigned			reset_counter_query;
45	uint32_t			vram_lost_counter;
46	spinlock_t			ring_lock;
47	struct amdgpu_ctx_entity	*entities[AMDGPU_HW_IP_NUM][AMDGPU_MAX_ENTITY_NUM];
48	bool				preamble_presented;
49	enum drm_sched_priority		init_priority;
50	enum drm_sched_priority		override_priority;
51	struct mutex			lock;
52	atomic_t			guilty;
53	unsigned long			ras_counter_ce;
54	unsigned long			ras_counter_ue;
55};
56
57struct amdgpu_ctx_mgr {
58	struct amdgpu_device	*adev;
59	struct mutex		lock;
60	/* protected by lock */
61	struct idr		ctx_handles;
62};
63
64extern const unsigned int amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM];
65
66struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id);
67int amdgpu_ctx_put(struct amdgpu_ctx *ctx);
68
69int amdgpu_ctx_get_entity(struct amdgpu_ctx *ctx, u32 hw_ip, u32 instance,
70			  u32 ring, struct drm_sched_entity **entity);
71void amdgpu_ctx_add_fence(struct amdgpu_ctx *ctx,
72			  struct drm_sched_entity *entity,
73			  struct dma_fence *fence, uint64_t *seq);
74struct dma_fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
75				       struct drm_sched_entity *entity,
76				       uint64_t seq);
77void amdgpu_ctx_priority_override(struct amdgpu_ctx *ctx,
78				  enum drm_sched_priority priority);
79
80int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
81		     struct drm_file *filp);
82
83int amdgpu_ctx_wait_prev_fence(struct amdgpu_ctx *ctx,
84			       struct drm_sched_entity *entity);
85
86void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr);
87void amdgpu_ctx_mgr_entity_fini(struct amdgpu_ctx_mgr *mgr);
88long amdgpu_ctx_mgr_entity_flush(struct amdgpu_ctx_mgr *mgr, long timeout);
89void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr);
90
91#endif