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#include "kfd_mqd_manager.h"
26#include "amdgpu_amdkfd.h"
27#include "kfd_device_queue_manager.h"
28
29/* Mapping queue priority to pipe priority, indexed by queue priority */
30int pipe_priority_map[] = {
31 KFD_PIPE_PRIORITY_CS_LOW,
32 KFD_PIPE_PRIORITY_CS_LOW,
33 KFD_PIPE_PRIORITY_CS_LOW,
34 KFD_PIPE_PRIORITY_CS_LOW,
35 KFD_PIPE_PRIORITY_CS_LOW,
36 KFD_PIPE_PRIORITY_CS_LOW,
37 KFD_PIPE_PRIORITY_CS_LOW,
38 KFD_PIPE_PRIORITY_CS_MEDIUM,
39 KFD_PIPE_PRIORITY_CS_MEDIUM,
40 KFD_PIPE_PRIORITY_CS_MEDIUM,
41 KFD_PIPE_PRIORITY_CS_MEDIUM,
42 KFD_PIPE_PRIORITY_CS_HIGH,
43 KFD_PIPE_PRIORITY_CS_HIGH,
44 KFD_PIPE_PRIORITY_CS_HIGH,
45 KFD_PIPE_PRIORITY_CS_HIGH,
46 KFD_PIPE_PRIORITY_CS_HIGH
47};
48
49struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
50{
51 struct kfd_mem_obj *mqd_mem_obj = NULL;
52
53 mqd_mem_obj = kzalloc(size: sizeof(struct kfd_mem_obj), GFP_KERNEL);
54 if (!mqd_mem_obj)
55 return NULL;
56
57 mqd_mem_obj->gtt_mem = dev->dqm->hiq_sdma_mqd.gtt_mem;
58 mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr;
59 mqd_mem_obj->cpu_ptr = dev->dqm->hiq_sdma_mqd.cpu_ptr;
60
61 return mqd_mem_obj;
62}
63
64struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
65 struct queue_properties *q)
66{
67 struct kfd_mem_obj *mqd_mem_obj = NULL;
68 uint64_t offset;
69
70 mqd_mem_obj = kzalloc(size: sizeof(struct kfd_mem_obj), GFP_KERNEL);
71 if (!mqd_mem_obj)
72 return NULL;
73
74 offset = (q->sdma_engine_id *
75 dev->device_info.num_sdma_queues_per_engine +
76 q->sdma_queue_id) *
77 dev->dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size;
78
79 offset += dev->dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size;
80
81 mqd_mem_obj->gtt_mem = (void *)((uint64_t)dev->dqm->hiq_sdma_mqd.gtt_mem
82 + offset);
83 mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr + offset;
84 mqd_mem_obj->cpu_ptr = (uint32_t *)((uint64_t)
85 dev->dqm->hiq_sdma_mqd.cpu_ptr + offset);
86
87 return mqd_mem_obj;
88}
89
90void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
91 struct kfd_mem_obj *mqd_mem_obj)
92{
93 WARN_ON(!mqd_mem_obj->gtt_mem);
94 kfree(objp: mqd_mem_obj);
95}
96
97void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
98 const uint32_t *cu_mask, uint32_t cu_mask_count,
99 uint32_t *se_mask)
100{
101 struct kfd_cu_info cu_info;
102 uint32_t cu_per_sh[KFD_MAX_NUM_SE][KFD_MAX_NUM_SH_PER_SE] = {0};
103 bool wgp_mode_req = KFD_GC_VERSION(mm->dev) >= IP_VERSION(10, 0, 0);
104 uint32_t en_mask = wgp_mode_req ? 0x3 : 0x1;
105 int i, se, sh, cu, cu_bitmap_sh_mul, inc = wgp_mode_req ? 2 : 1;
106
107 amdgpu_amdkfd_get_cu_info(mm->dev->adev, &cu_info);
108
109 if (cu_mask_count > cu_info.cu_active_number)
110 cu_mask_count = cu_info.cu_active_number;
111
112 /* Exceeding these bounds corrupts the stack and indicates a coding error.
113 * Returning with no CU's enabled will hang the queue, which should be
114 * attention grabbing.
115 */
116 if (cu_info.num_shader_engines > KFD_MAX_NUM_SE) {
117 pr_err("Exceeded KFD_MAX_NUM_SE, chip reports %d\n", cu_info.num_shader_engines);
118 return;
119 }
120 if (cu_info.num_shader_arrays_per_engine > KFD_MAX_NUM_SH_PER_SE) {
121 pr_err("Exceeded KFD_MAX_NUM_SH, chip reports %d\n",
122 cu_info.num_shader_arrays_per_engine * cu_info.num_shader_engines);
123 return;
124 }
125
126 cu_bitmap_sh_mul = (KFD_GC_VERSION(mm->dev) >= IP_VERSION(11, 0, 0) &&
127 KFD_GC_VERSION(mm->dev) < IP_VERSION(12, 0, 0)) ? 2 : 1;
128
129 /* Count active CUs per SH.
130 *
131 * Some CUs in an SH may be disabled. HW expects disabled CUs to be
132 * represented in the high bits of each SH's enable mask (the upper and lower
133 * 16 bits of se_mask) and will take care of the actual distribution of
134 * disabled CUs within each SH automatically.
135 * Each half of se_mask must be filled only on bits 0-cu_per_sh[se][sh]-1.
136 *
137 * See note on Arcturus cu_bitmap layout in gfx_v9_0_get_cu_info.
138 * See note on GFX11 cu_bitmap layout in gfx_v11_0_get_cu_info.
139 */
140 for (se = 0; se < cu_info.num_shader_engines; se++)
141 for (sh = 0; sh < cu_info.num_shader_arrays_per_engine; sh++)
142 cu_per_sh[se][sh] = hweight32(
143 cu_info.cu_bitmap[se % 4][sh + (se / 4) * cu_bitmap_sh_mul]);
144
145 /* Symmetrically map cu_mask to all SEs & SHs:
146 * se_mask programs up to 2 SH in the upper and lower 16 bits.
147 *
148 * Examples
149 * Assuming 1 SH/SE, 4 SEs:
150 * cu_mask[0] bit0 -> se_mask[0] bit0
151 * cu_mask[0] bit1 -> se_mask[1] bit0
152 * ...
153 * cu_mask[0] bit4 -> se_mask[0] bit1
154 * ...
155 *
156 * Assuming 2 SH/SE, 4 SEs
157 * cu_mask[0] bit0 -> se_mask[0] bit0 (SE0,SH0,CU0)
158 * cu_mask[0] bit1 -> se_mask[1] bit0 (SE1,SH0,CU0)
159 * ...
160 * cu_mask[0] bit4 -> se_mask[0] bit16 (SE0,SH1,CU0)
161 * cu_mask[0] bit5 -> se_mask[1] bit16 (SE1,SH1,CU0)
162 * ...
163 * cu_mask[0] bit8 -> se_mask[0] bit1 (SE0,SH0,CU1)
164 * ...
165 *
166 * First ensure all CUs are disabled, then enable user specified CUs.
167 */
168 for (i = 0; i < cu_info.num_shader_engines; i++)
169 se_mask[i] = 0;
170
171 i = 0;
172 for (cu = 0; cu < 16; cu += inc) {
173 for (sh = 0; sh < cu_info.num_shader_arrays_per_engine; sh++) {
174 for (se = 0; se < cu_info.num_shader_engines; se++) {
175 if (cu_per_sh[se][sh] > cu) {
176 if (cu_mask[i / 32] & (en_mask << (i % 32)))
177 se_mask[se] |= en_mask << (cu + sh * 16);
178 i += inc;
179 if (i == cu_mask_count)
180 return;
181 }
182 }
183 }
184 }
185}
186
187int kfd_hiq_load_mqd_kiq(struct mqd_manager *mm, void *mqd,
188 uint32_t pipe_id, uint32_t queue_id,
189 struct queue_properties *p, struct mm_struct *mms)
190{
191 return mm->dev->kfd2kgd->hiq_mqd_load(mm->dev->adev, mqd, pipe_id,
192 queue_id, p->doorbell_off);
193}
194
195int kfd_destroy_mqd_cp(struct mqd_manager *mm, void *mqd,
196 enum kfd_preempt_type type, unsigned int timeout,
197 uint32_t pipe_id, uint32_t queue_id)
198{
199 return mm->dev->kfd2kgd->hqd_destroy(mm->dev->adev, mqd, type, timeout,
200 pipe_id, queue_id);
201}
202
203void kfd_free_mqd_cp(struct mqd_manager *mm, void *mqd,
204 struct kfd_mem_obj *mqd_mem_obj)
205{
206 if (mqd_mem_obj->gtt_mem) {
207 amdgpu_amdkfd_free_gtt_mem(mm->dev->adev, mqd_mem_obj->gtt_mem);
208 kfree(objp: mqd_mem_obj);
209 } else {
210 kfd_gtt_sa_free(kfd: mm->dev, mem_obj: mqd_mem_obj);
211 }
212}
213
214bool kfd_is_occupied_cp(struct mqd_manager *mm, void *mqd,
215 uint64_t queue_address, uint32_t pipe_id,
216 uint32_t queue_id)
217{
218 return mm->dev->kfd2kgd->hqd_is_occupied(mm->dev->adev, queue_address,
219 pipe_id, queue_id);
220}
221
222int kfd_load_mqd_sdma(struct mqd_manager *mm, void *mqd,
223 uint32_t pipe_id, uint32_t queue_id,
224 struct queue_properties *p, struct mm_struct *mms)
225{
226 return mm->dev->kfd2kgd->hqd_sdma_load(mm->dev->adev, mqd,
227 (uint32_t __user *)p->write_ptr,
228 mms);
229}
230
231/*
232 * preempt type here is ignored because there is only one way
233 * to preempt sdma queue
234 */
235int kfd_destroy_mqd_sdma(struct mqd_manager *mm, void *mqd,
236 enum kfd_preempt_type type,
237 unsigned int timeout, uint32_t pipe_id,
238 uint32_t queue_id)
239{
240 return mm->dev->kfd2kgd->hqd_sdma_destroy(mm->dev->adev, mqd, timeout);
241}
242
243bool kfd_is_occupied_sdma(struct mqd_manager *mm, void *mqd,
244 uint64_t queue_address, uint32_t pipe_id,
245 uint32_t queue_id)
246{
247 return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->adev, mqd);
248}
249

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