Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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 | |
| 24 | #ifndef _GPU_SCHEDULER_H_ |
| 25 | #define _GPU_SCHEDULER_H_ |
| 26 | |
| 27 | #include <linux/kfifo.h> |
Chunming Zhou | 4cef926 | 2015-08-05 19:52:14 +0800 | [diff] [blame] | 28 | #include <linux/fence.h> |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 29 | |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 30 | struct amd_gpu_scheduler; |
Christian König | 432a4ff | 2015-08-12 11:46:04 +0200 | [diff] [blame] | 31 | struct amd_sched_rq; |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 32 | |
Chunming Zhou | f5617f9 | 2015-11-05 11:41:50 +0800 | [diff] [blame] | 33 | extern struct kmem_cache *sched_fence_slab; |
| 34 | extern atomic_t sched_fence_slab_ref; |
| 35 | |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 36 | /** |
| 37 | * A scheduler entity is a wrapper around a job queue or a group |
| 38 | * of other entities. Entities take turns emitting jobs from their |
| 39 | * job queues to corresponding hardware ring based on scheduling |
| 40 | * policy. |
| 41 | */ |
| 42 | struct amd_sched_entity { |
| 43 | struct list_head list; |
Christian König | 0f75aee | 2015-09-07 18:07:14 +0200 | [diff] [blame] | 44 | struct amd_sched_rq *rq; |
| 45 | struct amd_gpu_scheduler *sched; |
| 46 | |
Christian König | 91404fb | 2015-08-05 18:33:21 +0200 | [diff] [blame] | 47 | spinlock_t queue_lock; |
Christian König | 0f75aee | 2015-09-07 18:07:14 +0200 | [diff] [blame] | 48 | struct kfifo job_queue; |
| 49 | |
| 50 | atomic_t fence_seq; |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 51 | uint64_t fence_context; |
Christian König | 0f75aee | 2015-09-07 18:07:14 +0200 | [diff] [blame] | 52 | |
Christian König | e61235d | 2015-08-25 11:05:36 +0200 | [diff] [blame] | 53 | struct fence *dependency; |
| 54 | struct fence_cb cb; |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 55 | }; |
| 56 | |
| 57 | /** |
| 58 | * Run queue is a set of entities scheduling command submissions for |
| 59 | * one specific ring. It implements the scheduling policy that selects |
| 60 | * the next entity to emit commands from. |
| 61 | */ |
Christian König | 432a4ff | 2015-08-12 11:46:04 +0200 | [diff] [blame] | 62 | struct amd_sched_rq { |
Christian König | 2b184d8 | 2015-08-18 14:41:25 +0200 | [diff] [blame] | 63 | spinlock_t lock; |
Christian König | 432a4ff | 2015-08-12 11:46:04 +0200 | [diff] [blame] | 64 | struct list_head entities; |
| 65 | struct amd_sched_entity *current_entity; |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 66 | }; |
| 67 | |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 68 | struct amd_sched_fence { |
| 69 | struct fence base; |
Christian König | 258f3f9 | 2015-08-31 17:02:52 +0200 | [diff] [blame] | 70 | struct fence_cb cb; |
Christian König | 9b398fa | 2015-09-07 18:16:49 +0200 | [diff] [blame] | 71 | struct amd_gpu_scheduler *sched; |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 72 | spinlock_t lock; |
Chunming Zhou | 84f76ea | 2015-08-24 12:47:36 +0800 | [diff] [blame] | 73 | void *owner; |
Junwei Zhang | 2440ff2 | 2015-10-10 08:48:42 +0800 | [diff] [blame] | 74 | struct delayed_work dwork; |
| 75 | struct list_head list; |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 76 | }; |
| 77 | |
Chunming Zhou | 4cef926 | 2015-08-05 19:52:14 +0800 | [diff] [blame] | 78 | struct amd_sched_job { |
Chunming Zhou | 4cef926 | 2015-08-05 19:52:14 +0800 | [diff] [blame] | 79 | struct amd_gpu_scheduler *sched; |
Chunming Zhou | 953e8fd | 2015-08-06 15:19:12 +0800 | [diff] [blame] | 80 | struct amd_sched_entity *s_entity; |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 81 | struct amd_sched_fence *s_fence; |
Chunming Zhou | 4cef926 | 2015-08-05 19:52:14 +0800 | [diff] [blame] | 82 | }; |
| 83 | |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 84 | extern const struct fence_ops amd_sched_fence_ops; |
| 85 | static inline struct amd_sched_fence *to_amd_sched_fence(struct fence *f) |
| 86 | { |
| 87 | struct amd_sched_fence *__f = container_of(f, struct amd_sched_fence, base); |
| 88 | |
| 89 | if (__f->base.ops == &amd_sched_fence_ops) |
| 90 | return __f; |
| 91 | |
| 92 | return NULL; |
| 93 | } |
| 94 | |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 95 | /** |
| 96 | * Define the backend operations called by the scheduler, |
| 97 | * these functions should be implemented in driver side |
| 98 | */ |
| 99 | struct amd_sched_backend_ops { |
Junwei Zhang | 4c7eb91 | 2015-09-09 09:05:55 +0800 | [diff] [blame] | 100 | struct fence *(*dependency)(struct amd_sched_job *sched_job); |
| 101 | struct fence *(*run_job)(struct amd_sched_job *sched_job); |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 102 | }; |
| 103 | |
| 104 | /** |
| 105 | * One scheduler is implemented for each hardware ring |
| 106 | */ |
| 107 | struct amd_gpu_scheduler { |
Christian König | 4f839a2 | 2015-09-08 20:22:31 +0200 | [diff] [blame] | 108 | struct amd_sched_backend_ops *ops; |
| 109 | uint32_t hw_submission_limit; |
Junwei Zhang | 2440ff2 | 2015-10-10 08:48:42 +0800 | [diff] [blame] | 110 | long timeout; |
Christian König | 4f839a2 | 2015-09-08 20:22:31 +0200 | [diff] [blame] | 111 | const char *name; |
Christian König | 432a4ff | 2015-08-12 11:46:04 +0200 | [diff] [blame] | 112 | struct amd_sched_rq sched_rq; |
| 113 | struct amd_sched_rq kernel_rq; |
Christian König | c2b6bd7 | 2015-08-25 21:39:31 +0200 | [diff] [blame] | 114 | wait_queue_head_t wake_up_worker; |
| 115 | wait_queue_head_t job_scheduled; |
Christian König | 4f839a2 | 2015-09-08 20:22:31 +0200 | [diff] [blame] | 116 | atomic_t hw_rq_count; |
Junwei Zhang | 2440ff2 | 2015-10-10 08:48:42 +0800 | [diff] [blame] | 117 | struct list_head fence_list; |
| 118 | spinlock_t fence_list_lock; |
Christian König | 4f839a2 | 2015-09-08 20:22:31 +0200 | [diff] [blame] | 119 | struct task_struct *thread; |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 120 | }; |
| 121 | |
Christian König | 4f839a2 | 2015-09-08 20:22:31 +0200 | [diff] [blame] | 122 | int amd_sched_init(struct amd_gpu_scheduler *sched, |
| 123 | struct amd_sched_backend_ops *ops, |
Junwei Zhang | 2440ff2 | 2015-10-10 08:48:42 +0800 | [diff] [blame] | 124 | uint32_t hw_submission, long timeout, const char *name); |
Christian König | 4f839a2 | 2015-09-08 20:22:31 +0200 | [diff] [blame] | 125 | void amd_sched_fini(struct amd_gpu_scheduler *sched); |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 126 | |
Christian König | 91404fb | 2015-08-05 18:33:21 +0200 | [diff] [blame] | 127 | int amd_sched_entity_init(struct amd_gpu_scheduler *sched, |
| 128 | struct amd_sched_entity *entity, |
Christian König | 432a4ff | 2015-08-12 11:46:04 +0200 | [diff] [blame] | 129 | struct amd_sched_rq *rq, |
Christian König | 91404fb | 2015-08-05 18:33:21 +0200 | [diff] [blame] | 130 | uint32_t jobs); |
Christian König | 062c7fb | 2015-08-21 15:46:43 +0200 | [diff] [blame] | 131 | void amd_sched_entity_fini(struct amd_gpu_scheduler *sched, |
| 132 | struct amd_sched_entity *entity); |
Christian König | e284022 | 2015-11-05 19:49:48 +0100 | [diff] [blame] | 133 | void amd_sched_entity_push_job(struct amd_sched_job *sched_job); |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 134 | |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 135 | struct amd_sched_fence *amd_sched_fence_create( |
Chunming Zhou | 84f76ea | 2015-08-24 12:47:36 +0800 | [diff] [blame] | 136 | struct amd_sched_entity *s_entity, void *owner); |
Chunming Zhou | f556cb0c | 2015-08-02 11:18:04 +0800 | [diff] [blame] | 137 | void amd_sched_fence_signal(struct amd_sched_fence *fence); |
| 138 | |
| 139 | |
Jammy Zhou | a72ce6f | 2015-05-22 18:55:07 +0800 | [diff] [blame] | 140 | #endif |