summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/amd/amdkfd/kfd_crat.h
blob: 74c2d7a0d6285715339482b975f946779def8e58 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
 * Copyright 2014-2022 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef KFD_CRAT_H_INCLUDED
#define KFD_CRAT_H_INCLUDED

#include <linux/types.h>

#pragma pack(1)

/*
 * 4CC signature value for the CRAT ACPI table
 */

#define CRAT_SIGNATURE	"CRAT"

/*
 * Component Resource Association Table (CRAT)
 */

#define CRAT_OEMID_LENGTH	6
#define CRAT_OEMTABLEID_LENGTH	8
#define CRAT_RESERVED_LENGTH	6

#define CRAT_OEMID_64BIT_MASK ((1ULL << (CRAT_OEMID_LENGTH * 8)) - 1)

/* Compute Unit flags */
#define COMPUTE_UNIT_CPU	(1 << 0)  /* Create Virtual CRAT for CPU */
#define COMPUTE_UNIT_GPU	(1 << 1)  /* Create Virtual CRAT for GPU */

struct crat_header {
	uint32_t	signature;
	uint32_t	length;
	uint8_t		revision;
	uint8_t		checksum;
	uint8_t		oem_id[CRAT_OEMID_LENGTH];
	uint8_t		oem_table_id[CRAT_OEMTABLEID_LENGTH];
	uint32_t	oem_revision;
	uint32_t	creator_id;
	uint32_t	creator_revision;
	uint32_t	total_entries;
	uint16_t	num_domains;
	uint8_t		reserved[CRAT_RESERVED_LENGTH];
};

/*
 * The header structure is immediately followed by total_entries of the
 * data definitions
 */

/*
 * The currently defined subtype entries in the CRAT
 */
#define CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY	0
#define CRAT_SUBTYPE_MEMORY_AFFINITY		1
#define CRAT_SUBTYPE_CACHE_AFFINITY		2
#define CRAT_SUBTYPE_TLB_AFFINITY		3
#define CRAT_SUBTYPE_CCOMPUTE_AFFINITY		4
#define CRAT_SUBTYPE_IOLINK_AFFINITY		5
#define CRAT_SUBTYPE_MAX			6

/*
 * Do not change the value of CRAT_SIBLINGMAP_SIZE from 32
 * as it breaks the ABI.
 */
#define CRAT_SIBLINGMAP_SIZE	32

/*
 * ComputeUnit Affinity structure and definitions
 */
#define CRAT_CU_FLAGS_ENABLED		0x00000001
#define CRAT_CU_FLAGS_HOT_PLUGGABLE	0x00000002
#define CRAT_CU_FLAGS_CPU_PRESENT	0x00000004
#define CRAT_CU_FLAGS_GPU_PRESENT	0x00000008
#define CRAT_CU_FLAGS_IOMMU_PRESENT	0x00000010
#define CRAT_CU_FLAGS_RESERVED		0xffffffe0

#define CRAT_COMPUTEUNIT_RESERVED_LENGTH 4

struct crat_subtype_computeunit {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
	uint32_t	proximity_domain;
	uint32_t	processor_id_low;
	uint16_t	num_cpu_cores;
	uint16_t	num_simd_cores;
	uint16_t	max_waves_simd;
	uint16_t	io_count;
	uint16_t	hsa_capability;
	uint16_t	lds_size_in_kb;
	uint8_t		wave_front_size;
	uint8_t		num_banks;
	uint16_t	micro_engine_id;
	uint8_t		array_count;
	uint8_t		num_cu_per_array;
	uint8_t		num_simd_per_cu;
	uint8_t		max_slots_scatch_cu;
	uint8_t		reserved2[CRAT_COMPUTEUNIT_RESERVED_LENGTH];
};

/*
 * HSA Memory Affinity structure and definitions
 */
#define CRAT_MEM_FLAGS_ENABLED		0x00000001
#define CRAT_MEM_FLAGS_HOT_PLUGGABLE	0x00000002
#define CRAT_MEM_FLAGS_NON_VOLATILE	0x00000004
#define CRAT_MEM_FLAGS_RESERVED		0xfffffff8

#define CRAT_MEMORY_RESERVED_LENGTH 8

struct crat_subtype_memory {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
	uint32_t	proximity_domain;
	uint32_t	base_addr_low;
	uint32_t	base_addr_high;
	uint32_t	length_low;
	uint32_t	length_high;
	uint32_t	width;
	uint8_t		visibility_type; /* for virtual (dGPU) CRAT */
	uint8_t		reserved2[CRAT_MEMORY_RESERVED_LENGTH - 1];
};

/*
 * HSA Cache Affinity structure and definitions
 */
#define CRAT_CACHE_FLAGS_ENABLED	0x00000001
#define CRAT_CACHE_FLAGS_DATA_CACHE	0x00000002
#define CRAT_CACHE_FLAGS_INST_CACHE	0x00000004
#define CRAT_CACHE_FLAGS_CPU_CACHE	0x00000008
#define CRAT_CACHE_FLAGS_SIMD_CACHE	0x00000010
#define CRAT_CACHE_FLAGS_RESERVED	0xffffffe0

#define CRAT_CACHE_RESERVED_LENGTH 8

struct crat_subtype_cache {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
	uint32_t	processor_id_low;
	uint8_t		sibling_map[CRAT_SIBLINGMAP_SIZE];
	uint32_t	cache_size;
	uint8_t		cache_level;
	uint8_t		lines_per_tag;
	uint16_t	cache_line_size;
	uint8_t		associativity;
	uint8_t		cache_properties;
	uint16_t	cache_latency;
	uint8_t		reserved2[CRAT_CACHE_RESERVED_LENGTH];
};

/*
 * HSA TLB Affinity structure and definitions
 */
#define CRAT_TLB_FLAGS_ENABLED	0x00000001
#define CRAT_TLB_FLAGS_DATA_TLB	0x00000002
#define CRAT_TLB_FLAGS_INST_TLB	0x00000004
#define CRAT_TLB_FLAGS_CPU_TLB	0x00000008
#define CRAT_TLB_FLAGS_SIMD_TLB	0x00000010
#define CRAT_TLB_FLAGS_RESERVED	0xffffffe0

#define CRAT_TLB_RESERVED_LENGTH 4

struct crat_subtype_tlb {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
	uint32_t	processor_id_low;
	uint8_t		sibling_map[CRAT_SIBLINGMAP_SIZE];
	uint32_t	tlb_level;
	uint8_t		data_tlb_associativity_2mb;
	uint8_t		data_tlb_size_2mb;
	uint8_t		instruction_tlb_associativity_2mb;
	uint8_t		instruction_tlb_size_2mb;
	uint8_t		data_tlb_associativity_4k;
	uint8_t		data_tlb_size_4k;
	uint8_t		instruction_tlb_associativity_4k;
	uint8_t		instruction_tlb_size_4k;
	uint8_t		data_tlb_associativity_1gb;
	uint8_t		data_tlb_size_1gb;
	uint8_t		instruction_tlb_associativity_1gb;
	uint8_t		instruction_tlb_size_1gb;
	uint8_t		reserved2[CRAT_TLB_RESERVED_LENGTH];
};

/*
 * HSA CCompute/APU Affinity structure and definitions
 */
#define CRAT_CCOMPUTE_FLAGS_ENABLED	0x00000001
#define CRAT_CCOMPUTE_FLAGS_RESERVED	0xfffffffe

#define CRAT_CCOMPUTE_RESERVED_LENGTH 16

struct crat_subtype_ccompute {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
	uint32_t	processor_id_low;
	uint8_t		sibling_map[CRAT_SIBLINGMAP_SIZE];
	uint32_t	apu_size;
	uint8_t		reserved2[CRAT_CCOMPUTE_RESERVED_LENGTH];
};

/*
 * HSA IO Link Affinity structure and definitions
 */
#define CRAT_IOLINK_FLAGS_ENABLED		(1 << 0)
#define CRAT_IOLINK_FLAGS_NON_COHERENT		(1 << 1)
#define CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT	(1 << 2)
#define CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT	(1 << 3)
#define CRAT_IOLINK_FLAGS_NO_PEER_TO_PEER_DMA	(1 << 4)
#define CRAT_IOLINK_FLAGS_BI_DIRECTIONAL	(1 << 31)
#define CRAT_IOLINK_FLAGS_RESERVED_MASK		0x7fffffe0

/*
 * IO interface types
 */
#define CRAT_IOLINK_TYPE_UNDEFINED	0
#define CRAT_IOLINK_TYPE_HYPERTRANSPORT	1
#define CRAT_IOLINK_TYPE_PCIEXPRESS	2
#define CRAT_IOLINK_TYPE_AMBA		3
#define CRAT_IOLINK_TYPE_MIPI		4
#define CRAT_IOLINK_TYPE_QPI_1_1	5
#define CRAT_IOLINK_TYPE_RESERVED1	6
#define CRAT_IOLINK_TYPE_RESERVED2	7
#define CRAT_IOLINK_TYPE_RAPID_IO	8
#define CRAT_IOLINK_TYPE_INFINIBAND	9
#define CRAT_IOLINK_TYPE_RESERVED3	10
#define CRAT_IOLINK_TYPE_XGMI		11
#define CRAT_IOLINK_TYPE_XGOP		12
#define CRAT_IOLINK_TYPE_GZ		13
#define CRAT_IOLINK_TYPE_ETHERNET_RDMA	14
#define CRAT_IOLINK_TYPE_RDMA_OTHER	15
#define CRAT_IOLINK_TYPE_OTHER		16
#define CRAT_IOLINK_TYPE_MAX		255

#define CRAT_IOLINK_RESERVED_LENGTH	24

struct crat_subtype_iolink {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
	uint32_t	proximity_domain_from;
	uint32_t	proximity_domain_to;
	uint8_t		io_interface_type;
	uint8_t		version_major;
	uint16_t	version_minor;
	uint32_t	minimum_latency;
	uint32_t	maximum_latency;
	uint32_t	minimum_bandwidth_mbs;
	uint32_t	maximum_bandwidth_mbs;
	uint32_t	recommended_transfer_size;
	uint8_t		reserved2[CRAT_IOLINK_RESERVED_LENGTH - 1];
	uint8_t		weight_xgmi;
};

/*
 * HSA generic sub-type header
 */

#define CRAT_SUBTYPE_FLAGS_ENABLED 0x00000001

struct crat_subtype_generic {
	uint8_t		type;
	uint8_t		length;
	uint16_t	reserved;
	uint32_t	flags;
};

#pragma pack()

struct kfd_node;

/* Static table to describe GPU Cache information */
struct kfd_gpu_cache_info {
	uint32_t	cache_size;
	uint32_t	cache_level;
	uint32_t	flags;
	/* Indicates how many Compute Units share this cache
	 * within a SA. Value = 1 indicates the cache is not shared
	 */
	uint32_t	num_cu_shared;
};
int kfd_get_gpu_cache_info(struct kfd_node *kdev, struct kfd_gpu_cache_info **pcache_info);

void kfd_destroy_crat_image(void *crat_image);
int kfd_parse_crat_table(void *crat_image, struct list_head *device_list,
			 uint32_t proximity_domain);
int kfd_create_crat_image_virtual(void **crat_image, size_t *size,
				  int flags, struct kfd_node *kdev,
				  uint32_t proximity_domain);

#endif /* KFD_CRAT_H_INCLUDED */