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[linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_ctx.h
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
31 struct drm_device;
32 struct drm_file;
33 struct amdgpu_fpriv;
34 struct amdgpu_ctx_mgr;
35
36 #define AMDGPU_MAX_ENTITY_NUM 4
37
38 struct 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
45 struct 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         atomic_t                        guilty;
57         unsigned long                   ras_counter_ce;
58         unsigned long                   ras_counter_ue;
59         uint32_t                        stable_pstate;
60 };
61
62 struct amdgpu_ctx_mgr {
63         struct amdgpu_device    *adev;
64         struct mutex            lock;
65         /* protected by lock */
66         struct idr              ctx_handles;
67         atomic64_t              time_spend[AMDGPU_HW_IP_NUM];
68 };
69
70 extern const unsigned int amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM];
71
72 struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id);
73 int amdgpu_ctx_put(struct amdgpu_ctx *ctx);
74
75 int amdgpu_ctx_get_entity(struct amdgpu_ctx *ctx, u32 hw_ip, u32 instance,
76                           u32 ring, struct drm_sched_entity **entity);
77 uint64_t amdgpu_ctx_add_fence(struct amdgpu_ctx *ctx,
78                               struct drm_sched_entity *entity,
79                               struct dma_fence *fence);
80 struct dma_fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
81                                        struct drm_sched_entity *entity,
82                                        uint64_t seq);
83 bool amdgpu_ctx_priority_is_valid(int32_t ctx_prio);
84 void amdgpu_ctx_priority_override(struct amdgpu_ctx *ctx, int32_t ctx_prio);
85
86 int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
87                      struct drm_file *filp);
88
89 int amdgpu_ctx_wait_prev_fence(struct amdgpu_ctx *ctx,
90                                struct drm_sched_entity *entity);
91
92 void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr,
93                          struct amdgpu_device *adev);
94 void amdgpu_ctx_mgr_entity_fini(struct amdgpu_ctx_mgr *mgr);
95 long amdgpu_ctx_mgr_entity_flush(struct amdgpu_ctx_mgr *mgr, long timeout);
96 void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr);
97 void amdgpu_ctx_mgr_usage(struct amdgpu_ctx_mgr *mgr,
98                           ktime_t usage[AMDGPU_HW_IP_NUM]);
99
100 #endif
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