1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
3 * Copyright 2014-2022 Advanced Micro Devices, Inc.
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:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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.
24 #ifndef KFD_CRAT_H_INCLUDED
25 #define KFD_CRAT_H_INCLUDED
27 #include <linux/types.h>
32 * 4CC signature value for the CRAT ACPI table
35 #define CRAT_SIGNATURE "CRAT"
38 * Component Resource Association Table (CRAT)
41 #define CRAT_OEMID_LENGTH 6
42 #define CRAT_OEMTABLEID_LENGTH 8
43 #define CRAT_RESERVED_LENGTH 6
45 /* Compute Unit flags */
46 #define COMPUTE_UNIT_CPU (1 << 0) /* Create Virtual CRAT for CPU */
47 #define COMPUTE_UNIT_GPU (1 << 1) /* Create Virtual CRAT for GPU */
54 uint8_t oem_id[CRAT_OEMID_LENGTH];
55 uint8_t oem_table_id[CRAT_OEMTABLEID_LENGTH];
56 uint32_t oem_revision;
58 uint32_t creator_revision;
59 uint32_t total_entries;
61 uint8_t reserved[CRAT_RESERVED_LENGTH];
65 * The header structure is immediately followed by total_entries of the
70 * The currently defined subtype entries in the CRAT
72 #define CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY 0
73 #define CRAT_SUBTYPE_MEMORY_AFFINITY 1
74 #define CRAT_SUBTYPE_CACHE_AFFINITY 2
75 #define CRAT_SUBTYPE_TLB_AFFINITY 3
76 #define CRAT_SUBTYPE_CCOMPUTE_AFFINITY 4
77 #define CRAT_SUBTYPE_IOLINK_AFFINITY 5
78 #define CRAT_SUBTYPE_MAX 6
81 * Do not change the value of CRAT_SIBLINGMAP_SIZE from 32
82 * as it breaks the ABI.
84 #define CRAT_SIBLINGMAP_SIZE 32
87 * ComputeUnit Affinity structure and definitions
89 #define CRAT_CU_FLAGS_ENABLED 0x00000001
90 #define CRAT_CU_FLAGS_HOT_PLUGGABLE 0x00000002
91 #define CRAT_CU_FLAGS_CPU_PRESENT 0x00000004
92 #define CRAT_CU_FLAGS_GPU_PRESENT 0x00000008
93 #define CRAT_CU_FLAGS_IOMMU_PRESENT 0x00000010
94 #define CRAT_CU_FLAGS_RESERVED 0xffffffe0
96 #define CRAT_COMPUTEUNIT_RESERVED_LENGTH 4
98 struct crat_subtype_computeunit {
103 uint32_t proximity_domain;
104 uint32_t processor_id_low;
105 uint16_t num_cpu_cores;
106 uint16_t num_simd_cores;
107 uint16_t max_waves_simd;
109 uint16_t hsa_capability;
110 uint16_t lds_size_in_kb;
111 uint8_t wave_front_size;
113 uint16_t micro_engine_id;
115 uint8_t num_cu_per_array;
116 uint8_t num_simd_per_cu;
117 uint8_t max_slots_scatch_cu;
118 uint8_t reserved2[CRAT_COMPUTEUNIT_RESERVED_LENGTH];
122 * HSA Memory Affinity structure and definitions
124 #define CRAT_MEM_FLAGS_ENABLED 0x00000001
125 #define CRAT_MEM_FLAGS_HOT_PLUGGABLE 0x00000002
126 #define CRAT_MEM_FLAGS_NON_VOLATILE 0x00000004
127 #define CRAT_MEM_FLAGS_RESERVED 0xfffffff8
129 #define CRAT_MEMORY_RESERVED_LENGTH 8
131 struct crat_subtype_memory {
136 uint32_t proximity_domain;
137 uint32_t base_addr_low;
138 uint32_t base_addr_high;
140 uint32_t length_high;
142 uint8_t visibility_type; /* for virtual (dGPU) CRAT */
143 uint8_t reserved2[CRAT_MEMORY_RESERVED_LENGTH - 1];
147 * HSA Cache Affinity structure and definitions
149 #define CRAT_CACHE_FLAGS_ENABLED 0x00000001
150 #define CRAT_CACHE_FLAGS_DATA_CACHE 0x00000002
151 #define CRAT_CACHE_FLAGS_INST_CACHE 0x00000004
152 #define CRAT_CACHE_FLAGS_CPU_CACHE 0x00000008
153 #define CRAT_CACHE_FLAGS_SIMD_CACHE 0x00000010
154 #define CRAT_CACHE_FLAGS_RESERVED 0xffffffe0
156 #define CRAT_CACHE_RESERVED_LENGTH 8
158 struct crat_subtype_cache {
163 uint32_t processor_id_low;
164 uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE];
167 uint8_t lines_per_tag;
168 uint16_t cache_line_size;
169 uint8_t associativity;
170 uint8_t cache_properties;
171 uint16_t cache_latency;
172 uint8_t reserved2[CRAT_CACHE_RESERVED_LENGTH];
176 * HSA TLB Affinity structure and definitions
178 #define CRAT_TLB_FLAGS_ENABLED 0x00000001
179 #define CRAT_TLB_FLAGS_DATA_TLB 0x00000002
180 #define CRAT_TLB_FLAGS_INST_TLB 0x00000004
181 #define CRAT_TLB_FLAGS_CPU_TLB 0x00000008
182 #define CRAT_TLB_FLAGS_SIMD_TLB 0x00000010
183 #define CRAT_TLB_FLAGS_RESERVED 0xffffffe0
185 #define CRAT_TLB_RESERVED_LENGTH 4
187 struct crat_subtype_tlb {
192 uint32_t processor_id_low;
193 uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE];
195 uint8_t data_tlb_associativity_2mb;
196 uint8_t data_tlb_size_2mb;
197 uint8_t instruction_tlb_associativity_2mb;
198 uint8_t instruction_tlb_size_2mb;
199 uint8_t data_tlb_associativity_4k;
200 uint8_t data_tlb_size_4k;
201 uint8_t instruction_tlb_associativity_4k;
202 uint8_t instruction_tlb_size_4k;
203 uint8_t data_tlb_associativity_1gb;
204 uint8_t data_tlb_size_1gb;
205 uint8_t instruction_tlb_associativity_1gb;
206 uint8_t instruction_tlb_size_1gb;
207 uint8_t reserved2[CRAT_TLB_RESERVED_LENGTH];
211 * HSA CCompute/APU Affinity structure and definitions
213 #define CRAT_CCOMPUTE_FLAGS_ENABLED 0x00000001
214 #define CRAT_CCOMPUTE_FLAGS_RESERVED 0xfffffffe
216 #define CRAT_CCOMPUTE_RESERVED_LENGTH 16
218 struct crat_subtype_ccompute {
223 uint32_t processor_id_low;
224 uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE];
226 uint8_t reserved2[CRAT_CCOMPUTE_RESERVED_LENGTH];
230 * HSA IO Link Affinity structure and definitions
232 #define CRAT_IOLINK_FLAGS_ENABLED (1 << 0)
233 #define CRAT_IOLINK_FLAGS_NON_COHERENT (1 << 1)
234 #define CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT (1 << 2)
235 #define CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT (1 << 3)
236 #define CRAT_IOLINK_FLAGS_NO_PEER_TO_PEER_DMA (1 << 4)
237 #define CRAT_IOLINK_FLAGS_BI_DIRECTIONAL (1 << 31)
238 #define CRAT_IOLINK_FLAGS_RESERVED_MASK 0x7fffffe0
243 #define CRAT_IOLINK_TYPE_UNDEFINED 0
244 #define CRAT_IOLINK_TYPE_HYPERTRANSPORT 1
245 #define CRAT_IOLINK_TYPE_PCIEXPRESS 2
246 #define CRAT_IOLINK_TYPE_AMBA 3
247 #define CRAT_IOLINK_TYPE_MIPI 4
248 #define CRAT_IOLINK_TYPE_QPI_1_1 5
249 #define CRAT_IOLINK_TYPE_RESERVED1 6
250 #define CRAT_IOLINK_TYPE_RESERVED2 7
251 #define CRAT_IOLINK_TYPE_RAPID_IO 8
252 #define CRAT_IOLINK_TYPE_INFINIBAND 9
253 #define CRAT_IOLINK_TYPE_RESERVED3 10
254 #define CRAT_IOLINK_TYPE_XGMI 11
255 #define CRAT_IOLINK_TYPE_XGOP 12
256 #define CRAT_IOLINK_TYPE_GZ 13
257 #define CRAT_IOLINK_TYPE_ETHERNET_RDMA 14
258 #define CRAT_IOLINK_TYPE_RDMA_OTHER 15
259 #define CRAT_IOLINK_TYPE_OTHER 16
260 #define CRAT_IOLINK_TYPE_MAX 255
262 #define CRAT_IOLINK_RESERVED_LENGTH 24
264 struct crat_subtype_iolink {
269 uint32_t proximity_domain_from;
270 uint32_t proximity_domain_to;
271 uint8_t io_interface_type;
272 uint8_t version_major;
273 uint16_t version_minor;
274 uint32_t minimum_latency;
275 uint32_t maximum_latency;
276 uint32_t minimum_bandwidth_mbs;
277 uint32_t maximum_bandwidth_mbs;
278 uint32_t recommended_transfer_size;
279 uint8_t reserved2[CRAT_IOLINK_RESERVED_LENGTH - 1];
284 * HSA generic sub-type header
287 #define CRAT_SUBTYPE_FLAGS_ENABLED 0x00000001
289 struct crat_subtype_generic {
300 /* Static table to describe GPU Cache information */
301 struct kfd_gpu_cache_info {
303 uint32_t cache_level;
304 uint32_t cache_line_size;
306 /* Indicates how many Compute Units share this cache
307 * within a SA. Value = 1 indicates the cache is not shared
309 uint32_t num_cu_shared;
311 int kfd_get_gpu_cache_info(struct kfd_node *kdev, struct kfd_gpu_cache_info **pcache_info);
313 void kfd_destroy_crat_image(void *crat_image);
314 int kfd_parse_crat_table(void *crat_image, struct list_head *device_list,
315 uint32_t proximity_domain);
316 int kfd_create_crat_image_virtual(void **crat_image, size_t *size,
317 int flags, struct kfd_node *kdev,
318 uint32_t proximity_domain);
320 #endif /* KFD_CRAT_H_INCLUDED */