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 <linux/ktime.h>
27#include <linux/types.h>
28
29#include "amdgpu_ring.h"
30
31struct drm_device;
32struct drm_file;
33struct amdgpu_fpriv;
34struct amdgpu_ctx_mgr;
35
36#define AMDGPU_MAX_ENTITY_NUM 4
37
38struct amdgpu_ctx_entity {
39 uint32_t hw_ip;
40 uint64_t sequence;
41 struct drm_sched_entity entity;
42 struct dma_fence *fences[];
43};
44
45struct amdgpu_ctx {
46 struct kref refcount;
47 struct amdgpu_ctx_mgr *mgr;
48 unsigned reset_counter;
49 unsigned reset_counter_query;
50 uint32_t vram_lost_counter;
51 spinlock_t ring_lock;
52 struct amdgpu_ctx_entity *entities[AMDGPU_HW_IP_NUM][AMDGPU_MAX_ENTITY_NUM];
53 bool preamble_presented;
54 int32_t init_priority;
55 int32_t override_priority;
56 struct mutex lock;
57 atomic_t guilty;
58 unsigned long ras_counter_ce;
59 unsigned long ras_counter_ue;
60 uint32_t stable_pstate;
61};
62
63struct amdgpu_ctx_mgr {
64 struct amdgpu_device *adev;
65 struct mutex lock;
66 /* protected by lock */
67 struct idr ctx_handles;
68 atomic64_t time_spend[AMDGPU_HW_IP_NUM];
69};
70
71extern const unsigned int amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM];
72
73struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id);
74int amdgpu_ctx_put(struct amdgpu_ctx *ctx);
75
76int amdgpu_ctx_get_entity(struct amdgpu_ctx *ctx, u32 hw_ip, u32 instance,
77 u32 ring, struct drm_sched_entity **entity);
78uint64_t amdgpu_ctx_add_fence(struct amdgpu_ctx *ctx,
79 struct drm_sched_entity *entity,
80 struct dma_fence *fence);
81struct dma_fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
82 struct drm_sched_entity *entity,
83 uint64_t seq);
84bool amdgpu_ctx_priority_is_valid(int32_t ctx_prio);
85void amdgpu_ctx_priority_override(struct amdgpu_ctx *ctx, int32_t ctx_prio);
86
87int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
88 struct drm_file *filp);
89
90int amdgpu_ctx_wait_prev_fence(struct amdgpu_ctx *ctx,
91 struct drm_sched_entity *entity);
92
93void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr,
94 struct amdgpu_device *adev);
95void amdgpu_ctx_mgr_entity_fini(struct amdgpu_ctx_mgr *mgr);
96long amdgpu_ctx_mgr_entity_flush(struct amdgpu_ctx_mgr *mgr, long timeout);
97void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr);
98void amdgpu_ctx_mgr_usage(struct amdgpu_ctx_mgr *mgr,
99 ktime_t usage[AMDGPU_HW_IP_NUM]);
100
101#endif
102

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h