1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
2/*
3 * Copyright 2014-2022 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25#ifndef KFD_MQD_MANAGER_H_
26#define KFD_MQD_MANAGER_H_
27
28#include "kfd_priv.h"
29
30#define KFD_MAX_NUM_SE 8
31#define KFD_MAX_NUM_SH_PER_SE 2
32
33/**
34 * struct mqd_manager
35 *
36 * @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it.
37 *
38 * @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp
39 * scheduling mode.
40 *
41 * @update_mqd: Handles a update call for the MQD
42 *
43 * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
44 * Used only for no cp scheduling.
45 *
46 * @free_mqd: Releases the mqd buffer from local gpu memory.
47 *
48 * @is_occupied: Checks if the relevant HQD slot is occupied.
49 *
50 * @get_wave_state: Retrieves context save state and optionally copies the
51 * control stack, if kept in the MQD, to the given userspace address.
52 *
53 * @mqd_mutex: Mqd manager mutex.
54 *
55 * @dev: The kfd device structure coupled with this module.
56 *
57 * MQD stands for Memory Queue Descriptor which represents the current queue
58 * state in the memory and initiate the HQD (Hardware Queue Descriptor) state.
59 * This structure is actually a base class for the different types of MQDs
60 * structures for the variant ASICs that should be supported in the future.
61 * This base class is also contains all the MQD specific operations.
62 * Another important thing to mention is that each queue has a MQD that keeps
63 * his state (or context) after each preemption or reassignment.
64 * Basically there are a instances of the mqd manager class per MQD type per
65 * ASIC. Currently the kfd driver supports only Kaveri so there are instances
66 * per KFD_MQD_TYPE for each device.
67 *
68 */
69extern int pipe_priority_map[];
70struct mqd_manager {
71 struct kfd_mem_obj* (*allocate_mqd)(struct kfd_dev *kfd,
72 struct queue_properties *q);
73
74 void (*init_mqd)(struct mqd_manager *mm, void **mqd,
75 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
76 struct queue_properties *q);
77
78 int (*load_mqd)(struct mqd_manager *mm, void *mqd,
79 uint32_t pipe_id, uint32_t queue_id,
80 struct queue_properties *p,
81 struct mm_struct *mms);
82
83 void (*update_mqd)(struct mqd_manager *mm, void *mqd,
84 struct queue_properties *q,
85 struct mqd_update_info *minfo);
86
87 int (*destroy_mqd)(struct mqd_manager *mm, void *mqd,
88 enum kfd_preempt_type type,
89 unsigned int timeout, uint32_t pipe_id,
90 uint32_t queue_id);
91
92 void (*free_mqd)(struct mqd_manager *mm, void *mqd,
93 struct kfd_mem_obj *mqd_mem_obj);
94
95 bool (*is_occupied)(struct mqd_manager *mm, void *mqd,
96 uint64_t queue_address, uint32_t pipe_id,
97 uint32_t queue_id);
98
99 int (*get_wave_state)(struct mqd_manager *mm, void *mqd,
100 void __user *ctl_stack,
101 u32 *ctl_stack_used_size,
102 u32 *save_area_used_size);
103
104 void (*get_checkpoint_info)(struct mqd_manager *mm, void *mqd, uint32_t *ctl_stack_size);
105
106 void (*checkpoint_mqd)(struct mqd_manager *mm,
107 void *mqd,
108 void *mqd_dst,
109 void *ctl_stack_dst);
110
111 void (*restore_mqd)(struct mqd_manager *mm, void **mqd,
112 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
113 struct queue_properties *p,
114 const void *mqd_src,
115 const void *ctl_stack_src,
116 const u32 ctl_stack_size);
117
118#if defined(CONFIG_DEBUG_FS)
119 int (*debugfs_show_mqd)(struct seq_file *m, void *data);
120#endif
121 uint32_t (*read_doorbell_id)(void *mqd);
122
123 struct mutex mqd_mutex;
124 struct kfd_dev *dev;
125 uint32_t mqd_size;
126};
127
128struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
129 struct queue_properties *q);
130
131struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
132 struct queue_properties *q);
133void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
134 struct kfd_mem_obj *mqd_mem_obj);
135
136void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
137 const uint32_t *cu_mask, uint32_t cu_mask_count,
138 uint32_t *se_mask);
139
140int kfd_hiq_load_mqd_kiq(struct mqd_manager *mm, void *mqd,
141 uint32_t pipe_id, uint32_t queue_id,
142 struct queue_properties *p, struct mm_struct *mms);
143
144int kfd_destroy_mqd_cp(struct mqd_manager *mm, void *mqd,
145 enum kfd_preempt_type type, unsigned int timeout,
146 uint32_t pipe_id, uint32_t queue_id);
147
148void kfd_free_mqd_cp(struct mqd_manager *mm, void *mqd,
149 struct kfd_mem_obj *mqd_mem_obj);
150
151bool kfd_is_occupied_cp(struct mqd_manager *mm, void *mqd,
152 uint64_t queue_address, uint32_t pipe_id,
153 uint32_t queue_id);
154
155int kfd_load_mqd_sdma(struct mqd_manager *mm, void *mqd,
156 uint32_t pipe_id, uint32_t queue_id,
157 struct queue_properties *p, struct mm_struct *mms);
158
159int kfd_destroy_mqd_sdma(struct mqd_manager *mm, void *mqd,
160 enum kfd_preempt_type type, unsigned int timeout,
161 uint32_t pipe_id, uint32_t queue_id);
162
163bool kfd_is_occupied_sdma(struct mqd_manager *mm, void *mqd,
164 uint64_t queue_address, uint32_t pipe_id,
165 uint32_t queue_id);
166
167#endif /* KFD_MQD_MANAGER_H_ */
168

source code of linux/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h