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5b5c4e40 EP |
1 | /* |
2 | * Copyright 2014 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 | #include <linux/types.h> | |
24 | #include <linux/kernel.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/acpi.h> | |
28 | #include <linux/hash.h> | |
29 | #include <linux/cpufreq.h> | |
f7c826ad | 30 | #include <linux/log2.h> |
5b5c4e40 EP |
31 | |
32 | #include "kfd_priv.h" | |
33 | #include "kfd_crat.h" | |
34 | #include "kfd_topology.h" | |
35 | ||
36 | static struct list_head topology_device_list; | |
37 | static int topology_crat_parsed; | |
38 | static struct kfd_system_properties sys_props; | |
39 | ||
40 | static DECLARE_RWSEM(topology_lock); | |
41 | ||
42 | struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) | |
43 | { | |
44 | struct kfd_topology_device *top_dev; | |
45 | struct kfd_dev *device = NULL; | |
46 | ||
47 | down_read(&topology_lock); | |
48 | ||
49 | list_for_each_entry(top_dev, &topology_device_list, list) | |
50 | if (top_dev->gpu_id == gpu_id) { | |
51 | device = top_dev->gpu; | |
52 | break; | |
53 | } | |
54 | ||
55 | up_read(&topology_lock); | |
56 | ||
57 | return device; | |
58 | } | |
59 | ||
60 | struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) | |
61 | { | |
62 | struct kfd_topology_device *top_dev; | |
63 | struct kfd_dev *device = NULL; | |
64 | ||
65 | down_read(&topology_lock); | |
66 | ||
67 | list_for_each_entry(top_dev, &topology_device_list, list) | |
68 | if (top_dev->gpu->pdev == pdev) { | |
69 | device = top_dev->gpu; | |
70 | break; | |
71 | } | |
72 | ||
73 | up_read(&topology_lock); | |
74 | ||
75 | return device; | |
76 | } | |
77 | ||
78 | static int kfd_topology_get_crat_acpi(void *crat_image, size_t *size) | |
79 | { | |
80 | struct acpi_table_header *crat_table; | |
81 | acpi_status status; | |
82 | ||
83 | if (!size) | |
84 | return -EINVAL; | |
85 | ||
86 | /* | |
87 | * Fetch the CRAT table from ACPI | |
88 | */ | |
89 | status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table); | |
90 | if (status == AE_NOT_FOUND) { | |
91 | pr_warn("CRAT table not found\n"); | |
92 | return -ENODATA; | |
93 | } else if (ACPI_FAILURE(status)) { | |
94 | const char *err = acpi_format_exception(status); | |
95 | ||
96 | pr_err("CRAT table error: %s\n", err); | |
97 | return -EINVAL; | |
98 | } | |
99 | ||
16b9201c | 100 | if (*size >= crat_table->length && crat_image != NULL) |
5b5c4e40 EP |
101 | memcpy(crat_image, crat_table, crat_table->length); |
102 | ||
103 | *size = crat_table->length; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev, | |
109 | struct crat_subtype_computeunit *cu) | |
110 | { | |
111 | BUG_ON(!dev); | |
112 | BUG_ON(!cu); | |
113 | ||
114 | dev->node_props.cpu_cores_count = cu->num_cpu_cores; | |
115 | dev->node_props.cpu_core_id_base = cu->processor_id_low; | |
116 | if (cu->hsa_capability & CRAT_CU_FLAGS_IOMMU_PRESENT) | |
117 | dev->node_props.capability |= HSA_CAP_ATS_PRESENT; | |
118 | ||
119 | pr_info("CU CPU: cores=%d id_base=%d\n", cu->num_cpu_cores, | |
120 | cu->processor_id_low); | |
121 | } | |
122 | ||
123 | static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev, | |
124 | struct crat_subtype_computeunit *cu) | |
125 | { | |
126 | BUG_ON(!dev); | |
127 | BUG_ON(!cu); | |
128 | ||
129 | dev->node_props.simd_id_base = cu->processor_id_low; | |
130 | dev->node_props.simd_count = cu->num_simd_cores; | |
131 | dev->node_props.lds_size_in_kb = cu->lds_size_in_kb; | |
132 | dev->node_props.max_waves_per_simd = cu->max_waves_simd; | |
133 | dev->node_props.wave_front_size = cu->wave_front_size; | |
134 | dev->node_props.mem_banks_count = cu->num_banks; | |
135 | dev->node_props.array_count = cu->num_arrays; | |
136 | dev->node_props.cu_per_simd_array = cu->num_cu_per_array; | |
137 | dev->node_props.simd_per_cu = cu->num_simd_per_cu; | |
138 | dev->node_props.max_slots_scratch_cu = cu->max_slots_scatch_cu; | |
139 | if (cu->hsa_capability & CRAT_CU_FLAGS_HOT_PLUGGABLE) | |
140 | dev->node_props.capability |= HSA_CAP_HOT_PLUGGABLE; | |
141 | pr_info("CU GPU: simds=%d id_base=%d\n", cu->num_simd_cores, | |
142 | cu->processor_id_low); | |
143 | } | |
144 | ||
145 | /* kfd_parse_subtype_cu is called when the topology mutex is already acquired */ | |
146 | static int kfd_parse_subtype_cu(struct crat_subtype_computeunit *cu) | |
147 | { | |
148 | struct kfd_topology_device *dev; | |
149 | int i = 0; | |
150 | ||
151 | BUG_ON(!cu); | |
152 | ||
153 | pr_info("Found CU entry in CRAT table with proximity_domain=%d caps=%x\n", | |
154 | cu->proximity_domain, cu->hsa_capability); | |
155 | list_for_each_entry(dev, &topology_device_list, list) { | |
156 | if (cu->proximity_domain == i) { | |
157 | if (cu->flags & CRAT_CU_FLAGS_CPU_PRESENT) | |
158 | kfd_populated_cu_info_cpu(dev, cu); | |
159 | ||
160 | if (cu->flags & CRAT_CU_FLAGS_GPU_PRESENT) | |
161 | kfd_populated_cu_info_gpu(dev, cu); | |
162 | break; | |
163 | } | |
164 | i++; | |
165 | } | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | /* | |
171 | * kfd_parse_subtype_mem is called when the topology mutex is | |
172 | * already acquired | |
173 | */ | |
174 | static int kfd_parse_subtype_mem(struct crat_subtype_memory *mem) | |
175 | { | |
176 | struct kfd_mem_properties *props; | |
177 | struct kfd_topology_device *dev; | |
178 | int i = 0; | |
179 | ||
180 | BUG_ON(!mem); | |
181 | ||
182 | pr_info("Found memory entry in CRAT table with proximity_domain=%d\n", | |
183 | mem->promixity_domain); | |
184 | list_for_each_entry(dev, &topology_device_list, list) { | |
185 | if (mem->promixity_domain == i) { | |
186 | props = kfd_alloc_struct(props); | |
16b9201c | 187 | if (props == NULL) |
5b5c4e40 EP |
188 | return -ENOMEM; |
189 | ||
190 | if (dev->node_props.cpu_cores_count == 0) | |
191 | props->heap_type = HSA_MEM_HEAP_TYPE_FB_PRIVATE; | |
192 | else | |
193 | props->heap_type = HSA_MEM_HEAP_TYPE_SYSTEM; | |
194 | ||
195 | if (mem->flags & CRAT_MEM_FLAGS_HOT_PLUGGABLE) | |
196 | props->flags |= HSA_MEM_FLAGS_HOT_PLUGGABLE; | |
197 | if (mem->flags & CRAT_MEM_FLAGS_NON_VOLATILE) | |
198 | props->flags |= HSA_MEM_FLAGS_NON_VOLATILE; | |
199 | ||
200 | props->size_in_bytes = | |
201 | ((uint64_t)mem->length_high << 32) + | |
202 | mem->length_low; | |
203 | props->width = mem->width; | |
204 | ||
205 | dev->mem_bank_count++; | |
206 | list_add_tail(&props->list, &dev->mem_props); | |
207 | ||
208 | break; | |
209 | } | |
210 | i++; | |
211 | } | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | /* | |
217 | * kfd_parse_subtype_cache is called when the topology mutex | |
218 | * is already acquired | |
219 | */ | |
220 | static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache) | |
221 | { | |
222 | struct kfd_cache_properties *props; | |
223 | struct kfd_topology_device *dev; | |
224 | uint32_t id; | |
225 | ||
226 | BUG_ON(!cache); | |
227 | ||
228 | id = cache->processor_id_low; | |
229 | ||
230 | pr_info("Found cache entry in CRAT table with processor_id=%d\n", id); | |
231 | list_for_each_entry(dev, &topology_device_list, list) | |
232 | if (id == dev->node_props.cpu_core_id_base || | |
233 | id == dev->node_props.simd_id_base) { | |
234 | props = kfd_alloc_struct(props); | |
16b9201c | 235 | if (props == NULL) |
5b5c4e40 EP |
236 | return -ENOMEM; |
237 | ||
238 | props->processor_id_low = id; | |
239 | props->cache_level = cache->cache_level; | |
240 | props->cache_size = cache->cache_size; | |
241 | props->cacheline_size = cache->cache_line_size; | |
242 | props->cachelines_per_tag = cache->lines_per_tag; | |
243 | props->cache_assoc = cache->associativity; | |
244 | props->cache_latency = cache->cache_latency; | |
245 | ||
246 | if (cache->flags & CRAT_CACHE_FLAGS_DATA_CACHE) | |
247 | props->cache_type |= HSA_CACHE_TYPE_DATA; | |
248 | if (cache->flags & CRAT_CACHE_FLAGS_INST_CACHE) | |
249 | props->cache_type |= HSA_CACHE_TYPE_INSTRUCTION; | |
250 | if (cache->flags & CRAT_CACHE_FLAGS_CPU_CACHE) | |
251 | props->cache_type |= HSA_CACHE_TYPE_CPU; | |
252 | if (cache->flags & CRAT_CACHE_FLAGS_SIMD_CACHE) | |
253 | props->cache_type |= HSA_CACHE_TYPE_HSACU; | |
254 | ||
255 | dev->cache_count++; | |
256 | dev->node_props.caches_count++; | |
257 | list_add_tail(&props->list, &dev->cache_props); | |
258 | ||
259 | break; | |
260 | } | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | /* | |
266 | * kfd_parse_subtype_iolink is called when the topology mutex | |
267 | * is already acquired | |
268 | */ | |
269 | static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink) | |
270 | { | |
271 | struct kfd_iolink_properties *props; | |
272 | struct kfd_topology_device *dev; | |
273 | uint32_t i = 0; | |
274 | uint32_t id_from; | |
275 | uint32_t id_to; | |
276 | ||
277 | BUG_ON(!iolink); | |
278 | ||
279 | id_from = iolink->proximity_domain_from; | |
280 | id_to = iolink->proximity_domain_to; | |
281 | ||
282 | pr_info("Found IO link entry in CRAT table with id_from=%d\n", id_from); | |
283 | list_for_each_entry(dev, &topology_device_list, list) { | |
284 | if (id_from == i) { | |
285 | props = kfd_alloc_struct(props); | |
16b9201c | 286 | if (props == NULL) |
5b5c4e40 EP |
287 | return -ENOMEM; |
288 | ||
289 | props->node_from = id_from; | |
290 | props->node_to = id_to; | |
291 | props->ver_maj = iolink->version_major; | |
292 | props->ver_min = iolink->version_minor; | |
293 | ||
294 | /* | |
295 | * weight factor (derived from CDIR), currently always 1 | |
296 | */ | |
297 | props->weight = 1; | |
298 | ||
299 | props->min_latency = iolink->minimum_latency; | |
300 | props->max_latency = iolink->maximum_latency; | |
301 | props->min_bandwidth = iolink->minimum_bandwidth_mbs; | |
302 | props->max_bandwidth = iolink->maximum_bandwidth_mbs; | |
303 | props->rec_transfer_size = | |
304 | iolink->recommended_transfer_size; | |
305 | ||
306 | dev->io_link_count++; | |
307 | dev->node_props.io_links_count++; | |
308 | list_add_tail(&props->list, &dev->io_link_props); | |
309 | ||
310 | break; | |
311 | } | |
312 | i++; | |
313 | } | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr) | |
319 | { | |
320 | struct crat_subtype_computeunit *cu; | |
321 | struct crat_subtype_memory *mem; | |
322 | struct crat_subtype_cache *cache; | |
323 | struct crat_subtype_iolink *iolink; | |
324 | int ret = 0; | |
325 | ||
326 | BUG_ON(!sub_type_hdr); | |
327 | ||
328 | switch (sub_type_hdr->type) { | |
329 | case CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY: | |
330 | cu = (struct crat_subtype_computeunit *)sub_type_hdr; | |
331 | ret = kfd_parse_subtype_cu(cu); | |
332 | break; | |
333 | case CRAT_SUBTYPE_MEMORY_AFFINITY: | |
334 | mem = (struct crat_subtype_memory *)sub_type_hdr; | |
335 | ret = kfd_parse_subtype_mem(mem); | |
336 | break; | |
337 | case CRAT_SUBTYPE_CACHE_AFFINITY: | |
338 | cache = (struct crat_subtype_cache *)sub_type_hdr; | |
339 | ret = kfd_parse_subtype_cache(cache); | |
340 | break; | |
341 | case CRAT_SUBTYPE_TLB_AFFINITY: | |
342 | /* | |
343 | * For now, nothing to do here | |
344 | */ | |
345 | pr_info("Found TLB entry in CRAT table (not processing)\n"); | |
346 | break; | |
347 | case CRAT_SUBTYPE_CCOMPUTE_AFFINITY: | |
348 | /* | |
349 | * For now, nothing to do here | |
350 | */ | |
351 | pr_info("Found CCOMPUTE entry in CRAT table (not processing)\n"); | |
352 | break; | |
353 | case CRAT_SUBTYPE_IOLINK_AFFINITY: | |
354 | iolink = (struct crat_subtype_iolink *)sub_type_hdr; | |
355 | ret = kfd_parse_subtype_iolink(iolink); | |
356 | break; | |
357 | default: | |
358 | pr_warn("Unknown subtype (%d) in CRAT\n", | |
359 | sub_type_hdr->type); | |
360 | } | |
361 | ||
362 | return ret; | |
363 | } | |
364 | ||
365 | static void kfd_release_topology_device(struct kfd_topology_device *dev) | |
366 | { | |
367 | struct kfd_mem_properties *mem; | |
368 | struct kfd_cache_properties *cache; | |
369 | struct kfd_iolink_properties *iolink; | |
370 | ||
371 | BUG_ON(!dev); | |
372 | ||
373 | list_del(&dev->list); | |
374 | ||
375 | while (dev->mem_props.next != &dev->mem_props) { | |
376 | mem = container_of(dev->mem_props.next, | |
377 | struct kfd_mem_properties, list); | |
378 | list_del(&mem->list); | |
379 | kfree(mem); | |
380 | } | |
381 | ||
382 | while (dev->cache_props.next != &dev->cache_props) { | |
383 | cache = container_of(dev->cache_props.next, | |
384 | struct kfd_cache_properties, list); | |
385 | list_del(&cache->list); | |
386 | kfree(cache); | |
387 | } | |
388 | ||
389 | while (dev->io_link_props.next != &dev->io_link_props) { | |
390 | iolink = container_of(dev->io_link_props.next, | |
391 | struct kfd_iolink_properties, list); | |
392 | list_del(&iolink->list); | |
393 | kfree(iolink); | |
394 | } | |
395 | ||
396 | kfree(dev); | |
397 | ||
398 | sys_props.num_devices--; | |
399 | } | |
400 | ||
401 | static void kfd_release_live_view(void) | |
402 | { | |
403 | struct kfd_topology_device *dev; | |
404 | ||
405 | while (topology_device_list.next != &topology_device_list) { | |
406 | dev = container_of(topology_device_list.next, | |
407 | struct kfd_topology_device, list); | |
408 | kfd_release_topology_device(dev); | |
409 | } | |
410 | ||
411 | memset(&sys_props, 0, sizeof(sys_props)); | |
412 | } | |
413 | ||
414 | static struct kfd_topology_device *kfd_create_topology_device(void) | |
415 | { | |
416 | struct kfd_topology_device *dev; | |
417 | ||
418 | dev = kfd_alloc_struct(dev); | |
16b9201c | 419 | if (dev == NULL) { |
5b5c4e40 | 420 | pr_err("No memory to allocate a topology device"); |
16b9201c | 421 | return NULL; |
5b5c4e40 EP |
422 | } |
423 | ||
424 | INIT_LIST_HEAD(&dev->mem_props); | |
425 | INIT_LIST_HEAD(&dev->cache_props); | |
426 | INIT_LIST_HEAD(&dev->io_link_props); | |
427 | ||
428 | list_add_tail(&dev->list, &topology_device_list); | |
429 | sys_props.num_devices++; | |
430 | ||
431 | return dev; | |
16b9201c | 432 | } |
5b5c4e40 EP |
433 | |
434 | static int kfd_parse_crat_table(void *crat_image) | |
435 | { | |
436 | struct kfd_topology_device *top_dev; | |
437 | struct crat_subtype_generic *sub_type_hdr; | |
438 | uint16_t node_id; | |
439 | int ret; | |
440 | struct crat_header *crat_table = (struct crat_header *)crat_image; | |
441 | uint16_t num_nodes; | |
442 | uint32_t image_len; | |
443 | ||
444 | if (!crat_image) | |
445 | return -EINVAL; | |
446 | ||
447 | num_nodes = crat_table->num_domains; | |
448 | image_len = crat_table->length; | |
449 | ||
450 | pr_info("Parsing CRAT table with %d nodes\n", num_nodes); | |
451 | ||
452 | for (node_id = 0; node_id < num_nodes; node_id++) { | |
453 | top_dev = kfd_create_topology_device(); | |
454 | if (!top_dev) { | |
455 | kfd_release_live_view(); | |
456 | return -ENOMEM; | |
457 | } | |
458 | } | |
459 | ||
460 | sys_props.platform_id = | |
461 | (*((uint64_t *)crat_table->oem_id)) & CRAT_OEMID_64BIT_MASK; | |
462 | sys_props.platform_oem = *((uint64_t *)crat_table->oem_table_id); | |
463 | sys_props.platform_rev = crat_table->revision; | |
464 | ||
465 | sub_type_hdr = (struct crat_subtype_generic *)(crat_table+1); | |
466 | while ((char *)sub_type_hdr + sizeof(struct crat_subtype_generic) < | |
467 | ((char *)crat_image) + image_len) { | |
468 | if (sub_type_hdr->flags & CRAT_SUBTYPE_FLAGS_ENABLED) { | |
469 | ret = kfd_parse_subtype(sub_type_hdr); | |
470 | if (ret != 0) { | |
471 | kfd_release_live_view(); | |
472 | return ret; | |
473 | } | |
474 | } | |
475 | ||
476 | sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + | |
477 | sub_type_hdr->length); | |
478 | } | |
479 | ||
480 | sys_props.generation_count++; | |
481 | topology_crat_parsed = 1; | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | ||
487 | #define sysfs_show_gen_prop(buffer, fmt, ...) \ | |
488 | snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__) | |
489 | #define sysfs_show_32bit_prop(buffer, name, value) \ | |
490 | sysfs_show_gen_prop(buffer, "%s %u\n", name, value) | |
491 | #define sysfs_show_64bit_prop(buffer, name, value) \ | |
492 | sysfs_show_gen_prop(buffer, "%s %llu\n", name, value) | |
493 | #define sysfs_show_32bit_val(buffer, value) \ | |
494 | sysfs_show_gen_prop(buffer, "%u\n", value) | |
495 | #define sysfs_show_str_val(buffer, value) \ | |
496 | sysfs_show_gen_prop(buffer, "%s\n", value) | |
497 | ||
498 | static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, | |
499 | char *buffer) | |
500 | { | |
501 | ssize_t ret; | |
502 | ||
503 | /* Making sure that the buffer is an empty string */ | |
504 | buffer[0] = 0; | |
505 | ||
506 | if (attr == &sys_props.attr_genid) { | |
507 | ret = sysfs_show_32bit_val(buffer, sys_props.generation_count); | |
508 | } else if (attr == &sys_props.attr_props) { | |
509 | sysfs_show_64bit_prop(buffer, "platform_oem", | |
510 | sys_props.platform_oem); | |
511 | sysfs_show_64bit_prop(buffer, "platform_id", | |
512 | sys_props.platform_id); | |
513 | ret = sysfs_show_64bit_prop(buffer, "platform_rev", | |
514 | sys_props.platform_rev); | |
515 | } else { | |
516 | ret = -EINVAL; | |
517 | } | |
518 | ||
519 | return ret; | |
520 | } | |
521 | ||
522 | static const struct sysfs_ops sysprops_ops = { | |
523 | .show = sysprops_show, | |
524 | }; | |
525 | ||
526 | static struct kobj_type sysprops_type = { | |
527 | .sysfs_ops = &sysprops_ops, | |
528 | }; | |
529 | ||
530 | static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, | |
531 | char *buffer) | |
532 | { | |
533 | ssize_t ret; | |
534 | struct kfd_iolink_properties *iolink; | |
535 | ||
536 | /* Making sure that the buffer is an empty string */ | |
537 | buffer[0] = 0; | |
538 | ||
539 | iolink = container_of(attr, struct kfd_iolink_properties, attr); | |
540 | sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type); | |
541 | sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj); | |
542 | sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min); | |
543 | sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from); | |
544 | sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to); | |
545 | sysfs_show_32bit_prop(buffer, "weight", iolink->weight); | |
546 | sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency); | |
547 | sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency); | |
548 | sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth); | |
549 | sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth); | |
550 | sysfs_show_32bit_prop(buffer, "recommended_transfer_size", | |
551 | iolink->rec_transfer_size); | |
552 | ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags); | |
553 | ||
554 | return ret; | |
555 | } | |
556 | ||
557 | static const struct sysfs_ops iolink_ops = { | |
558 | .show = iolink_show, | |
559 | }; | |
560 | ||
561 | static struct kobj_type iolink_type = { | |
562 | .sysfs_ops = &iolink_ops, | |
563 | }; | |
564 | ||
565 | static ssize_t mem_show(struct kobject *kobj, struct attribute *attr, | |
566 | char *buffer) | |
567 | { | |
568 | ssize_t ret; | |
569 | struct kfd_mem_properties *mem; | |
570 | ||
571 | /* Making sure that the buffer is an empty string */ | |
572 | buffer[0] = 0; | |
573 | ||
574 | mem = container_of(attr, struct kfd_mem_properties, attr); | |
575 | sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type); | |
576 | sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes); | |
577 | sysfs_show_32bit_prop(buffer, "flags", mem->flags); | |
578 | sysfs_show_32bit_prop(buffer, "width", mem->width); | |
579 | ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max); | |
580 | ||
581 | return ret; | |
582 | } | |
583 | ||
584 | static const struct sysfs_ops mem_ops = { | |
585 | .show = mem_show, | |
586 | }; | |
587 | ||
588 | static struct kobj_type mem_type = { | |
589 | .sysfs_ops = &mem_ops, | |
590 | }; | |
591 | ||
592 | static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, | |
593 | char *buffer) | |
594 | { | |
595 | ssize_t ret; | |
596 | uint32_t i; | |
597 | struct kfd_cache_properties *cache; | |
598 | ||
599 | /* Making sure that the buffer is an empty string */ | |
600 | buffer[0] = 0; | |
601 | ||
602 | cache = container_of(attr, struct kfd_cache_properties, attr); | |
603 | sysfs_show_32bit_prop(buffer, "processor_id_low", | |
604 | cache->processor_id_low); | |
605 | sysfs_show_32bit_prop(buffer, "level", cache->cache_level); | |
606 | sysfs_show_32bit_prop(buffer, "size", cache->cache_size); | |
607 | sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size); | |
608 | sysfs_show_32bit_prop(buffer, "cache_lines_per_tag", | |
609 | cache->cachelines_per_tag); | |
610 | sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc); | |
611 | sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency); | |
612 | sysfs_show_32bit_prop(buffer, "type", cache->cache_type); | |
613 | snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer); | |
614 | for (i = 0; i < KFD_TOPOLOGY_CPU_SIBLINGS; i++) | |
615 | ret = snprintf(buffer, PAGE_SIZE, "%s%d%s", | |
616 | buffer, cache->sibling_map[i], | |
617 | (i == KFD_TOPOLOGY_CPU_SIBLINGS-1) ? | |
618 | "\n" : ","); | |
619 | ||
620 | return ret; | |
621 | } | |
622 | ||
623 | static const struct sysfs_ops cache_ops = { | |
624 | .show = kfd_cache_show, | |
625 | }; | |
626 | ||
627 | static struct kobj_type cache_type = { | |
628 | .sysfs_ops = &cache_ops, | |
629 | }; | |
630 | ||
631 | static ssize_t node_show(struct kobject *kobj, struct attribute *attr, | |
632 | char *buffer) | |
633 | { | |
5b5c4e40 EP |
634 | struct kfd_topology_device *dev; |
635 | char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE]; | |
636 | uint32_t i; | |
f7c826ad | 637 | uint32_t log_max_watch_addr; |
5b5c4e40 EP |
638 | |
639 | /* Making sure that the buffer is an empty string */ | |
640 | buffer[0] = 0; | |
641 | ||
642 | if (strcmp(attr->name, "gpu_id") == 0) { | |
643 | dev = container_of(attr, struct kfd_topology_device, | |
644 | attr_gpuid); | |
f7c826ad AS |
645 | return sysfs_show_32bit_val(buffer, dev->gpu_id); |
646 | } | |
647 | ||
648 | if (strcmp(attr->name, "name") == 0) { | |
5b5c4e40 EP |
649 | dev = container_of(attr, struct kfd_topology_device, |
650 | attr_name); | |
651 | for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) { | |
652 | public_name[i] = | |
653 | (char)dev->node_props.marketing_name[i]; | |
654 | if (dev->node_props.marketing_name[i] == 0) | |
655 | break; | |
656 | } | |
657 | public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0; | |
f7c826ad AS |
658 | return sysfs_show_str_val(buffer, public_name); |
659 | } | |
5b5c4e40 | 660 | |
f7c826ad AS |
661 | dev = container_of(attr, struct kfd_topology_device, |
662 | attr_props); | |
663 | sysfs_show_32bit_prop(buffer, "cpu_cores_count", | |
664 | dev->node_props.cpu_cores_count); | |
665 | sysfs_show_32bit_prop(buffer, "simd_count", | |
666 | dev->node_props.simd_count); | |
667 | ||
668 | if (dev->mem_bank_count < dev->node_props.mem_banks_count) { | |
669 | pr_warn("kfd: mem_banks_count truncated from %d to %d\n", | |
670 | dev->node_props.mem_banks_count, | |
671 | dev->mem_bank_count); | |
672 | sysfs_show_32bit_prop(buffer, "mem_banks_count", | |
673 | dev->mem_bank_count); | |
674 | } else { | |
675 | sysfs_show_32bit_prop(buffer, "mem_banks_count", | |
676 | dev->node_props.mem_banks_count); | |
677 | } | |
f1386fbc | 678 | |
f7c826ad AS |
679 | sysfs_show_32bit_prop(buffer, "caches_count", |
680 | dev->node_props.caches_count); | |
681 | sysfs_show_32bit_prop(buffer, "io_links_count", | |
682 | dev->node_props.io_links_count); | |
683 | sysfs_show_32bit_prop(buffer, "cpu_core_id_base", | |
684 | dev->node_props.cpu_core_id_base); | |
685 | sysfs_show_32bit_prop(buffer, "simd_id_base", | |
686 | dev->node_props.simd_id_base); | |
687 | sysfs_show_32bit_prop(buffer, "capability", | |
688 | dev->node_props.capability); | |
689 | sysfs_show_32bit_prop(buffer, "max_waves_per_simd", | |
690 | dev->node_props.max_waves_per_simd); | |
691 | sysfs_show_32bit_prop(buffer, "lds_size_in_kb", | |
692 | dev->node_props.lds_size_in_kb); | |
693 | sysfs_show_32bit_prop(buffer, "gds_size_in_kb", | |
694 | dev->node_props.gds_size_in_kb); | |
695 | sysfs_show_32bit_prop(buffer, "wave_front_size", | |
696 | dev->node_props.wave_front_size); | |
697 | sysfs_show_32bit_prop(buffer, "array_count", | |
698 | dev->node_props.array_count); | |
699 | sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine", | |
700 | dev->node_props.simd_arrays_per_engine); | |
701 | sysfs_show_32bit_prop(buffer, "cu_per_simd_array", | |
702 | dev->node_props.cu_per_simd_array); | |
703 | sysfs_show_32bit_prop(buffer, "simd_per_cu", | |
704 | dev->node_props.simd_per_cu); | |
705 | sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu", | |
706 | dev->node_props.max_slots_scratch_cu); | |
707 | sysfs_show_32bit_prop(buffer, "vendor_id", | |
708 | dev->node_props.vendor_id); | |
709 | sysfs_show_32bit_prop(buffer, "device_id", | |
710 | dev->node_props.device_id); | |
711 | sysfs_show_32bit_prop(buffer, "location_id", | |
712 | dev->node_props.location_id); | |
713 | ||
714 | if (dev->gpu) { | |
715 | log_max_watch_addr = | |
716 | __ilog2_u32(dev->gpu->device_info->num_of_watch_points); | |
717 | ||
718 | if (log_max_watch_addr) { | |
719 | dev->node_props.capability |= | |
720 | HSA_CAP_WATCH_POINTS_SUPPORTED; | |
721 | ||
722 | dev->node_props.capability |= | |
723 | ((log_max_watch_addr << | |
724 | HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & | |
725 | HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); | |
5b5c4e40 EP |
726 | } |
727 | ||
f7c826ad | 728 | sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute", |
cea405b1 | 729 | dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz( |
f7c826ad | 730 | dev->gpu->kgd)); |
42e08c78 | 731 | |
f7c826ad | 732 | sysfs_show_64bit_prop(buffer, "local_mem_size", |
42e08c78 | 733 | (unsigned long long int) 0); |
f7c826ad AS |
734 | |
735 | sysfs_show_32bit_prop(buffer, "fw_version", | |
cea405b1 | 736 | dev->gpu->kfd2kgd->get_fw_version( |
f7c826ad AS |
737 | dev->gpu->kgd, |
738 | KGD_ENGINE_MEC1)); | |
5b5c4e40 EP |
739 | } |
740 | ||
f7c826ad AS |
741 | return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute", |
742 | cpufreq_quick_get_max(0)/1000); | |
5b5c4e40 EP |
743 | } |
744 | ||
745 | static const struct sysfs_ops node_ops = { | |
746 | .show = node_show, | |
747 | }; | |
748 | ||
749 | static struct kobj_type node_type = { | |
750 | .sysfs_ops = &node_ops, | |
751 | }; | |
752 | ||
753 | static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) | |
754 | { | |
755 | sysfs_remove_file(kobj, attr); | |
756 | kobject_del(kobj); | |
757 | kobject_put(kobj); | |
758 | } | |
759 | ||
760 | static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) | |
761 | { | |
762 | struct kfd_iolink_properties *iolink; | |
763 | struct kfd_cache_properties *cache; | |
764 | struct kfd_mem_properties *mem; | |
765 | ||
766 | BUG_ON(!dev); | |
767 | ||
768 | if (dev->kobj_iolink) { | |
769 | list_for_each_entry(iolink, &dev->io_link_props, list) | |
770 | if (iolink->kobj) { | |
771 | kfd_remove_sysfs_file(iolink->kobj, | |
772 | &iolink->attr); | |
16b9201c | 773 | iolink->kobj = NULL; |
5b5c4e40 EP |
774 | } |
775 | kobject_del(dev->kobj_iolink); | |
776 | kobject_put(dev->kobj_iolink); | |
16b9201c | 777 | dev->kobj_iolink = NULL; |
5b5c4e40 EP |
778 | } |
779 | ||
780 | if (dev->kobj_cache) { | |
781 | list_for_each_entry(cache, &dev->cache_props, list) | |
782 | if (cache->kobj) { | |
783 | kfd_remove_sysfs_file(cache->kobj, | |
784 | &cache->attr); | |
16b9201c | 785 | cache->kobj = NULL; |
5b5c4e40 EP |
786 | } |
787 | kobject_del(dev->kobj_cache); | |
788 | kobject_put(dev->kobj_cache); | |
16b9201c | 789 | dev->kobj_cache = NULL; |
5b5c4e40 EP |
790 | } |
791 | ||
792 | if (dev->kobj_mem) { | |
793 | list_for_each_entry(mem, &dev->mem_props, list) | |
794 | if (mem->kobj) { | |
795 | kfd_remove_sysfs_file(mem->kobj, &mem->attr); | |
16b9201c | 796 | mem->kobj = NULL; |
5b5c4e40 EP |
797 | } |
798 | kobject_del(dev->kobj_mem); | |
799 | kobject_put(dev->kobj_mem); | |
16b9201c | 800 | dev->kobj_mem = NULL; |
5b5c4e40 EP |
801 | } |
802 | ||
803 | if (dev->kobj_node) { | |
804 | sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); | |
805 | sysfs_remove_file(dev->kobj_node, &dev->attr_name); | |
806 | sysfs_remove_file(dev->kobj_node, &dev->attr_props); | |
807 | kobject_del(dev->kobj_node); | |
808 | kobject_put(dev->kobj_node); | |
16b9201c | 809 | dev->kobj_node = NULL; |
5b5c4e40 EP |
810 | } |
811 | } | |
812 | ||
813 | static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, | |
814 | uint32_t id) | |
815 | { | |
816 | struct kfd_iolink_properties *iolink; | |
817 | struct kfd_cache_properties *cache; | |
818 | struct kfd_mem_properties *mem; | |
819 | int ret; | |
820 | uint32_t i; | |
821 | ||
822 | BUG_ON(!dev); | |
823 | ||
824 | /* | |
825 | * Creating the sysfs folders | |
826 | */ | |
827 | BUG_ON(dev->kobj_node); | |
828 | dev->kobj_node = kfd_alloc_struct(dev->kobj_node); | |
829 | if (!dev->kobj_node) | |
830 | return -ENOMEM; | |
831 | ||
832 | ret = kobject_init_and_add(dev->kobj_node, &node_type, | |
833 | sys_props.kobj_nodes, "%d", id); | |
834 | if (ret < 0) | |
835 | return ret; | |
836 | ||
837 | dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); | |
838 | if (!dev->kobj_mem) | |
839 | return -ENOMEM; | |
840 | ||
841 | dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); | |
842 | if (!dev->kobj_cache) | |
843 | return -ENOMEM; | |
844 | ||
845 | dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); | |
846 | if (!dev->kobj_iolink) | |
847 | return -ENOMEM; | |
848 | ||
849 | /* | |
850 | * Creating sysfs files for node properties | |
851 | */ | |
852 | dev->attr_gpuid.name = "gpu_id"; | |
853 | dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; | |
854 | sysfs_attr_init(&dev->attr_gpuid); | |
855 | dev->attr_name.name = "name"; | |
856 | dev->attr_name.mode = KFD_SYSFS_FILE_MODE; | |
857 | sysfs_attr_init(&dev->attr_name); | |
858 | dev->attr_props.name = "properties"; | |
859 | dev->attr_props.mode = KFD_SYSFS_FILE_MODE; | |
860 | sysfs_attr_init(&dev->attr_props); | |
861 | ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); | |
862 | if (ret < 0) | |
863 | return ret; | |
864 | ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); | |
865 | if (ret < 0) | |
866 | return ret; | |
867 | ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); | |
868 | if (ret < 0) | |
869 | return ret; | |
870 | ||
871 | i = 0; | |
872 | list_for_each_entry(mem, &dev->mem_props, list) { | |
873 | mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); | |
874 | if (!mem->kobj) | |
875 | return -ENOMEM; | |
876 | ret = kobject_init_and_add(mem->kobj, &mem_type, | |
877 | dev->kobj_mem, "%d", i); | |
878 | if (ret < 0) | |
879 | return ret; | |
880 | ||
881 | mem->attr.name = "properties"; | |
882 | mem->attr.mode = KFD_SYSFS_FILE_MODE; | |
883 | sysfs_attr_init(&mem->attr); | |
884 | ret = sysfs_create_file(mem->kobj, &mem->attr); | |
885 | if (ret < 0) | |
886 | return ret; | |
887 | i++; | |
888 | } | |
889 | ||
890 | i = 0; | |
891 | list_for_each_entry(cache, &dev->cache_props, list) { | |
892 | cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); | |
893 | if (!cache->kobj) | |
894 | return -ENOMEM; | |
895 | ret = kobject_init_and_add(cache->kobj, &cache_type, | |
896 | dev->kobj_cache, "%d", i); | |
897 | if (ret < 0) | |
898 | return ret; | |
899 | ||
900 | cache->attr.name = "properties"; | |
901 | cache->attr.mode = KFD_SYSFS_FILE_MODE; | |
902 | sysfs_attr_init(&cache->attr); | |
903 | ret = sysfs_create_file(cache->kobj, &cache->attr); | |
904 | if (ret < 0) | |
905 | return ret; | |
906 | i++; | |
907 | } | |
908 | ||
909 | i = 0; | |
910 | list_for_each_entry(iolink, &dev->io_link_props, list) { | |
911 | iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); | |
912 | if (!iolink->kobj) | |
913 | return -ENOMEM; | |
914 | ret = kobject_init_and_add(iolink->kobj, &iolink_type, | |
915 | dev->kobj_iolink, "%d", i); | |
916 | if (ret < 0) | |
917 | return ret; | |
918 | ||
919 | iolink->attr.name = "properties"; | |
920 | iolink->attr.mode = KFD_SYSFS_FILE_MODE; | |
921 | sysfs_attr_init(&iolink->attr); | |
922 | ret = sysfs_create_file(iolink->kobj, &iolink->attr); | |
923 | if (ret < 0) | |
924 | return ret; | |
925 | i++; | |
926 | } | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
931 | static int kfd_build_sysfs_node_tree(void) | |
932 | { | |
933 | struct kfd_topology_device *dev; | |
934 | int ret; | |
935 | uint32_t i = 0; | |
936 | ||
937 | list_for_each_entry(dev, &topology_device_list, list) { | |
8dfead6c | 938 | ret = kfd_build_sysfs_node_entry(dev, i); |
5b5c4e40 EP |
939 | if (ret < 0) |
940 | return ret; | |
941 | i++; | |
942 | } | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | static void kfd_remove_sysfs_node_tree(void) | |
948 | { | |
949 | struct kfd_topology_device *dev; | |
950 | ||
951 | list_for_each_entry(dev, &topology_device_list, list) | |
952 | kfd_remove_sysfs_node_entry(dev); | |
953 | } | |
954 | ||
955 | static int kfd_topology_update_sysfs(void) | |
956 | { | |
957 | int ret; | |
958 | ||
959 | pr_info("Creating topology SYSFS entries\n"); | |
16b9201c | 960 | if (sys_props.kobj_topology == NULL) { |
5b5c4e40 EP |
961 | sys_props.kobj_topology = |
962 | kfd_alloc_struct(sys_props.kobj_topology); | |
963 | if (!sys_props.kobj_topology) | |
964 | return -ENOMEM; | |
965 | ||
966 | ret = kobject_init_and_add(sys_props.kobj_topology, | |
967 | &sysprops_type, &kfd_device->kobj, | |
968 | "topology"); | |
969 | if (ret < 0) | |
970 | return ret; | |
971 | ||
972 | sys_props.kobj_nodes = kobject_create_and_add("nodes", | |
973 | sys_props.kobj_topology); | |
974 | if (!sys_props.kobj_nodes) | |
975 | return -ENOMEM; | |
976 | ||
977 | sys_props.attr_genid.name = "generation_id"; | |
978 | sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; | |
979 | sysfs_attr_init(&sys_props.attr_genid); | |
980 | ret = sysfs_create_file(sys_props.kobj_topology, | |
981 | &sys_props.attr_genid); | |
982 | if (ret < 0) | |
983 | return ret; | |
984 | ||
985 | sys_props.attr_props.name = "system_properties"; | |
986 | sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; | |
987 | sysfs_attr_init(&sys_props.attr_props); | |
988 | ret = sysfs_create_file(sys_props.kobj_topology, | |
989 | &sys_props.attr_props); | |
990 | if (ret < 0) | |
991 | return ret; | |
992 | } | |
993 | ||
994 | kfd_remove_sysfs_node_tree(); | |
995 | ||
996 | return kfd_build_sysfs_node_tree(); | |
997 | } | |
998 | ||
999 | static void kfd_topology_release_sysfs(void) | |
1000 | { | |
1001 | kfd_remove_sysfs_node_tree(); | |
1002 | if (sys_props.kobj_topology) { | |
1003 | sysfs_remove_file(sys_props.kobj_topology, | |
1004 | &sys_props.attr_genid); | |
1005 | sysfs_remove_file(sys_props.kobj_topology, | |
1006 | &sys_props.attr_props); | |
1007 | if (sys_props.kobj_nodes) { | |
1008 | kobject_del(sys_props.kobj_nodes); | |
1009 | kobject_put(sys_props.kobj_nodes); | |
16b9201c | 1010 | sys_props.kobj_nodes = NULL; |
5b5c4e40 EP |
1011 | } |
1012 | kobject_del(sys_props.kobj_topology); | |
1013 | kobject_put(sys_props.kobj_topology); | |
16b9201c | 1014 | sys_props.kobj_topology = NULL; |
5b5c4e40 EP |
1015 | } |
1016 | } | |
1017 | ||
1018 | int kfd_topology_init(void) | |
1019 | { | |
16b9201c | 1020 | void *crat_image = NULL; |
5b5c4e40 EP |
1021 | size_t image_size = 0; |
1022 | int ret; | |
1023 | ||
1024 | /* | |
1025 | * Initialize the head for the topology device list | |
1026 | */ | |
1027 | INIT_LIST_HEAD(&topology_device_list); | |
1028 | init_rwsem(&topology_lock); | |
1029 | topology_crat_parsed = 0; | |
1030 | ||
1031 | memset(&sys_props, 0, sizeof(sys_props)); | |
1032 | ||
1033 | /* | |
1034 | * Get the CRAT image from the ACPI | |
1035 | */ | |
1036 | ret = kfd_topology_get_crat_acpi(crat_image, &image_size); | |
1037 | if (ret == 0 && image_size > 0) { | |
1038 | pr_info("Found CRAT image with size=%zd\n", image_size); | |
1039 | crat_image = kmalloc(image_size, GFP_KERNEL); | |
1040 | if (!crat_image) { | |
1041 | ret = -ENOMEM; | |
1042 | pr_err("No memory for allocating CRAT image\n"); | |
1043 | goto err; | |
1044 | } | |
1045 | ret = kfd_topology_get_crat_acpi(crat_image, &image_size); | |
1046 | ||
1047 | if (ret == 0) { | |
1048 | down_write(&topology_lock); | |
1049 | ret = kfd_parse_crat_table(crat_image); | |
1050 | if (ret == 0) | |
1051 | ret = kfd_topology_update_sysfs(); | |
1052 | up_write(&topology_lock); | |
1053 | } else { | |
1054 | pr_err("Couldn't get CRAT table size from ACPI\n"); | |
1055 | } | |
1056 | kfree(crat_image); | |
1057 | } else if (ret == -ENODATA) { | |
1058 | ret = 0; | |
1059 | } else { | |
1060 | pr_err("Couldn't get CRAT table size from ACPI\n"); | |
1061 | } | |
1062 | ||
1063 | err: | |
1064 | pr_info("Finished initializing topology ret=%d\n", ret); | |
1065 | return ret; | |
1066 | } | |
1067 | ||
1068 | void kfd_topology_shutdown(void) | |
1069 | { | |
1070 | kfd_topology_release_sysfs(); | |
1071 | kfd_release_live_view(); | |
1072 | } | |
1073 | ||
1074 | static void kfd_debug_print_topology(void) | |
1075 | { | |
1076 | struct kfd_topology_device *dev; | |
1077 | uint32_t i = 0; | |
1078 | ||
1079 | pr_info("DEBUG PRINT OF TOPOLOGY:"); | |
1080 | list_for_each_entry(dev, &topology_device_list, list) { | |
1081 | pr_info("Node: %d\n", i); | |
1082 | pr_info("\tGPU assigned: %s\n", (dev->gpu ? "yes" : "no")); | |
1083 | pr_info("\tCPU count: %d\n", dev->node_props.cpu_cores_count); | |
1084 | pr_info("\tSIMD count: %d", dev->node_props.simd_count); | |
1085 | i++; | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) | |
1090 | { | |
1091 | uint32_t hashout; | |
1092 | uint32_t buf[7]; | |
1093 | int i; | |
1094 | ||
1095 | if (!gpu) | |
1096 | return 0; | |
1097 | ||
1098 | buf[0] = gpu->pdev->devfn; | |
1099 | buf[1] = gpu->pdev->subsystem_vendor; | |
1100 | buf[2] = gpu->pdev->subsystem_device; | |
1101 | buf[3] = gpu->pdev->device; | |
1102 | buf[4] = gpu->pdev->bus->number; | |
cea405b1 XZ |
1103 | buf[5] = (uint32_t)(gpu->kfd2kgd->get_vmem_size(gpu->kgd) |
1104 | & 0xffffffff); | |
1105 | buf[6] = (uint32_t)(gpu->kfd2kgd->get_vmem_size(gpu->kgd) >> 32); | |
5b5c4e40 EP |
1106 | |
1107 | for (i = 0, hashout = 0; i < 7; i++) | |
1108 | hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); | |
1109 | ||
1110 | return hashout; | |
1111 | } | |
1112 | ||
1113 | static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) | |
1114 | { | |
1115 | struct kfd_topology_device *dev; | |
16b9201c | 1116 | struct kfd_topology_device *out_dev = NULL; |
5b5c4e40 EP |
1117 | |
1118 | BUG_ON(!gpu); | |
1119 | ||
1120 | list_for_each_entry(dev, &topology_device_list, list) | |
16b9201c | 1121 | if (dev->gpu == NULL && dev->node_props.simd_count > 0) { |
5b5c4e40 EP |
1122 | dev->gpu = gpu; |
1123 | out_dev = dev; | |
1124 | break; | |
1125 | } | |
1126 | ||
1127 | return out_dev; | |
1128 | } | |
1129 | ||
1130 | static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) | |
1131 | { | |
1132 | /* | |
1133 | * TODO: Generate an event for thunk about the arrival/removal | |
1134 | * of the GPU | |
1135 | */ | |
1136 | } | |
1137 | ||
1138 | int kfd_topology_add_device(struct kfd_dev *gpu) | |
1139 | { | |
1140 | uint32_t gpu_id; | |
1141 | struct kfd_topology_device *dev; | |
1142 | int res; | |
1143 | ||
1144 | BUG_ON(!gpu); | |
1145 | ||
1146 | gpu_id = kfd_generate_gpu_id(gpu); | |
1147 | ||
1148 | pr_debug("kfd: Adding new GPU (ID: 0x%x) to topology\n", gpu_id); | |
1149 | ||
1150 | down_write(&topology_lock); | |
1151 | /* | |
1152 | * Try to assign the GPU to existing topology device (generated from | |
1153 | * CRAT table | |
1154 | */ | |
1155 | dev = kfd_assign_gpu(gpu); | |
1156 | if (!dev) { | |
1157 | pr_info("GPU was not found in the current topology. Extending.\n"); | |
1158 | kfd_debug_print_topology(); | |
1159 | dev = kfd_create_topology_device(); | |
1160 | if (!dev) { | |
1161 | res = -ENOMEM; | |
1162 | goto err; | |
1163 | } | |
1164 | dev->gpu = gpu; | |
1165 | ||
1166 | /* | |
1167 | * TODO: Make a call to retrieve topology information from the | |
1168 | * GPU vBIOS | |
1169 | */ | |
1170 | ||
1171 | /* | |
1172 | * Update the SYSFS tree, since we added another topology device | |
1173 | */ | |
1174 | if (kfd_topology_update_sysfs() < 0) | |
1175 | kfd_topology_release_sysfs(); | |
1176 | ||
1177 | } | |
1178 | ||
1179 | dev->gpu_id = gpu_id; | |
1180 | gpu->id = gpu_id; | |
1181 | dev->node_props.vendor_id = gpu->pdev->vendor; | |
1182 | dev->node_props.device_id = gpu->pdev->device; | |
1183 | dev->node_props.location_id = (gpu->pdev->bus->number << 24) + | |
1184 | (gpu->pdev->devfn & 0xffffff); | |
1185 | /* | |
1186 | * TODO: Retrieve max engine clock values from KGD | |
1187 | */ | |
1188 | ||
1189 | res = 0; | |
1190 | ||
1191 | err: | |
1192 | up_write(&topology_lock); | |
1193 | ||
1194 | if (res == 0) | |
1195 | kfd_notify_gpu_change(gpu_id, 1); | |
1196 | ||
1197 | return res; | |
1198 | } | |
1199 | ||
1200 | int kfd_topology_remove_device(struct kfd_dev *gpu) | |
1201 | { | |
1202 | struct kfd_topology_device *dev; | |
1203 | uint32_t gpu_id; | |
1204 | int res = -ENODEV; | |
1205 | ||
1206 | BUG_ON(!gpu); | |
1207 | ||
1208 | down_write(&topology_lock); | |
1209 | ||
1210 | list_for_each_entry(dev, &topology_device_list, list) | |
1211 | if (dev->gpu == gpu) { | |
1212 | gpu_id = dev->gpu_id; | |
1213 | kfd_remove_sysfs_node_entry(dev); | |
1214 | kfd_release_topology_device(dev); | |
1215 | res = 0; | |
1216 | if (kfd_topology_update_sysfs() < 0) | |
1217 | kfd_topology_release_sysfs(); | |
1218 | break; | |
1219 | } | |
1220 | ||
1221 | up_write(&topology_lock); | |
1222 | ||
1223 | if (res == 0) | |
1224 | kfd_notify_gpu_change(gpu_id, 0); | |
1225 | ||
1226 | return res; | |
1227 | } | |
1228 | ||
1229 | /* | |
1230 | * When idx is out of bounds, the function will return NULL | |
1231 | */ | |
1232 | struct kfd_dev *kfd_topology_enum_kfd_devices(uint8_t idx) | |
1233 | { | |
1234 | ||
1235 | struct kfd_topology_device *top_dev; | |
1236 | struct kfd_dev *device = NULL; | |
1237 | uint8_t device_idx = 0; | |
1238 | ||
1239 | down_read(&topology_lock); | |
1240 | ||
1241 | list_for_each_entry(top_dev, &topology_device_list, list) { | |
1242 | if (device_idx == idx) { | |
1243 | device = top_dev->gpu; | |
1244 | break; | |
1245 | } | |
1246 | ||
1247 | device_idx++; | |
1248 | } | |
1249 | ||
1250 | up_read(&topology_lock); | |
1251 | ||
1252 | return device; | |
1253 | ||
1254 | } |