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drm/amdkfd: Add number of watch points to topology
[deliverable/linux.git] / drivers / gpu / drm / amd / amdkfd / kfd_topology.c
CommitLineData
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
36static struct list_head topology_device_list;
37static int topology_crat_parsed;
38static struct kfd_system_properties sys_props;
39
40static DECLARE_RWSEM(topology_lock);
41
42struct 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
60struct 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
78static 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
108static 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
123static 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 */
146static 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 */
174static 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 */
220static 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 */
269static 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
318static 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
365static 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
401static 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
414static 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
434static 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
498static 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
522static const struct sysfs_ops sysprops_ops = {
523 .show = sysprops_show,
524};
525
526static struct kobj_type sysprops_type = {
527 .sysfs_ops = &sysprops_ops,
528};
529
530static 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
557static const struct sysfs_ops iolink_ops = {
558 .show = iolink_show,
559};
560
561static struct kobj_type iolink_type = {
562 .sysfs_ops = &iolink_ops,
563};
564
565static 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
584static const struct sysfs_ops mem_ops = {
585 .show = mem_show,
586};
587
588static struct kobj_type mem_type = {
589 .sysfs_ops = &mem_ops,
590};
591
592static 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
623static const struct sysfs_ops cache_ops = {
624 .show = kfd_cache_show,
625};
626
627static struct kobj_type cache_type = {
628 .sysfs_ops = &cache_ops,
629};
630
631static 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
AS		 728 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
729 kfd2kgd->get_max_engine_clock_in_mhz(
730 dev->gpu->kgd));
731 sysfs_show_64bit_prop(buffer, "local_mem_size",
732 kfd2kgd->get_vmem_size(dev->gpu->kgd));
733
734 sysfs_show_32bit_prop(buffer, "fw_version",
735 kfd2kgd->get_fw_version(
736 dev->gpu->kgd,
737 KGD_ENGINE_MEC1));
5b5c4e40
EP		 738 }
739
f7c826ad
AS		 740 return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
741 cpufreq_quick_get_max(0)/1000);
5b5c4e40
EP		 742}
743
744static const struct sysfs_ops node_ops = {
745 .show = node_show,
746};
747
748static struct kobj_type node_type = {
749 .sysfs_ops = &node_ops,
750};
751
752static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
753{
754 sysfs_remove_file(kobj, attr);
755 kobject_del(kobj);
756 kobject_put(kobj);
757}
758
759static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
760{
761 struct kfd_iolink_properties *iolink;
762 struct kfd_cache_properties *cache;
763 struct kfd_mem_properties *mem;
764
765 BUG_ON(!dev);
766
767 if (dev->kobj_iolink) {
768 list_for_each_entry(iolink, &dev->io_link_props, list)
769 if (iolink->kobj) {
770 kfd_remove_sysfs_file(iolink->kobj,
771 &iolink->attr);
16b9201c 772 iolink->kobj = NULL;
5b5c4e40
EP		 773 }
774 kobject_del(dev->kobj_iolink);
775 kobject_put(dev->kobj_iolink);
16b9201c 776 dev->kobj_iolink = NULL;
5b5c4e40
EP		 777 }
778
779 if (dev->kobj_cache) {
780 list_for_each_entry(cache, &dev->cache_props, list)
781 if (cache->kobj) {
782 kfd_remove_sysfs_file(cache->kobj,
783 &cache->attr);
16b9201c 784 cache->kobj = NULL;
5b5c4e40
EP		 785 }
786 kobject_del(dev->kobj_cache);
787 kobject_put(dev->kobj_cache);
16b9201c 788 dev->kobj_cache = NULL;
5b5c4e40
EP		 789 }
790
791 if (dev->kobj_mem) {
792 list_for_each_entry(mem, &dev->mem_props, list)
793 if (mem->kobj) {
794 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
16b9201c 795 mem->kobj = NULL;
5b5c4e40
EP		 796 }
797 kobject_del(dev->kobj_mem);
798 kobject_put(dev->kobj_mem);
16b9201c 799 dev->kobj_mem = NULL;
5b5c4e40
EP		 800 }
801
802 if (dev->kobj_node) {
803 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
804 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
805 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
806 kobject_del(dev->kobj_node);
807 kobject_put(dev->kobj_node);
16b9201c 808 dev->kobj_node = NULL;
5b5c4e40
EP		 809 }
810}
811
812static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
813 uint32_t id)
814{
815 struct kfd_iolink_properties *iolink;
816 struct kfd_cache_properties *cache;
817 struct kfd_mem_properties *mem;
818 int ret;
819 uint32_t i;
820
821 BUG_ON(!dev);
822
823 /*
824 * Creating the sysfs folders
825 */
826 BUG_ON(dev->kobj_node);
827 dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
828 if (!dev->kobj_node)
829 return -ENOMEM;
830
831 ret = kobject_init_and_add(dev->kobj_node, &node_type,
832 sys_props.kobj_nodes, "%d", id);
833 if (ret < 0)
834 return ret;
835
836 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
837 if (!dev->kobj_mem)
838 return -ENOMEM;
839
840 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
841 if (!dev->kobj_cache)
842 return -ENOMEM;
843
844 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
845 if (!dev->kobj_iolink)
846 return -ENOMEM;
847
848 /*
849 * Creating sysfs files for node properties
850 */
851 dev->attr_gpuid.name = "gpu_id";
852 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
853 sysfs_attr_init(&dev->attr_gpuid);
854 dev->attr_name.name = "name";
855 dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
856 sysfs_attr_init(&dev->attr_name);
857 dev->attr_props.name = "properties";
858 dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
859 sysfs_attr_init(&dev->attr_props);
860 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
861 if (ret < 0)
862 return ret;
863 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
864 if (ret < 0)
865 return ret;
866 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
867 if (ret < 0)
868 return ret;
869
870 i = 0;
871 list_for_each_entry(mem, &dev->mem_props, list) {
872 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
873 if (!mem->kobj)
874 return -ENOMEM;
875 ret = kobject_init_and_add(mem->kobj, &mem_type,
876 dev->kobj_mem, "%d", i);
877 if (ret < 0)
878 return ret;
879
880 mem->attr.name = "properties";
881 mem->attr.mode = KFD_SYSFS_FILE_MODE;
882 sysfs_attr_init(&mem->attr);
883 ret = sysfs_create_file(mem->kobj, &mem->attr);
884 if (ret < 0)
885 return ret;
886 i++;
887 }
888
889 i = 0;
890 list_for_each_entry(cache, &dev->cache_props, list) {
891 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
892 if (!cache->kobj)
893 return -ENOMEM;
894 ret = kobject_init_and_add(cache->kobj, &cache_type,
895 dev->kobj_cache, "%d", i);
896 if (ret < 0)
897 return ret;
898
899 cache->attr.name = "properties";
900 cache->attr.mode = KFD_SYSFS_FILE_MODE;
901 sysfs_attr_init(&cache->attr);
902 ret = sysfs_create_file(cache->kobj, &cache->attr);
903 if (ret < 0)
904 return ret;
905 i++;
906 }
907
908 i = 0;
909 list_for_each_entry(iolink, &dev->io_link_props, list) {
910 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
911 if (!iolink->kobj)
912 return -ENOMEM;
913 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
914 dev->kobj_iolink, "%d", i);
915 if (ret < 0)
916 return ret;
917
918 iolink->attr.name = "properties";
919 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
920 sysfs_attr_init(&iolink->attr);
921 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
922 if (ret < 0)
923 return ret;
924 i++;
925}
926
927 return 0;
928}
929
930static int kfd_build_sysfs_node_tree(void)
931{
932 struct kfd_topology_device *dev;
933 int ret;
934 uint32_t i = 0;
935
936 list_for_each_entry(dev, &topology_device_list, list) {
937 ret = kfd_build_sysfs_node_entry(dev, 0);
938 if (ret < 0)
939 return ret;
940 i++;
941 }
942
943 return 0;
944}
945
946static void kfd_remove_sysfs_node_tree(void)
947{
948 struct kfd_topology_device *dev;
949
950 list_for_each_entry(dev, &topology_device_list, list)
951 kfd_remove_sysfs_node_entry(dev);
952}
953
954static int kfd_topology_update_sysfs(void)
955{
956 int ret;
957
958 pr_info("Creating topology SYSFS entries\n");
16b9201c 959 if (sys_props.kobj_topology == NULL) {
5b5c4e40
EP		 960 sys_props.kobj_topology =
961 kfd_alloc_struct(sys_props.kobj_topology);
962 if (!sys_props.kobj_topology)
963 return -ENOMEM;
964
965 ret = kobject_init_and_add(sys_props.kobj_topology,
966 &sysprops_type, &kfd_device->kobj,
967 "topology");
968 if (ret < 0)
969 return ret;
970
971 sys_props.kobj_nodes = kobject_create_and_add("nodes",
972 sys_props.kobj_topology);
973 if (!sys_props.kobj_nodes)
974 return -ENOMEM;
975
976 sys_props.attr_genid.name = "generation_id";
977 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
978 sysfs_attr_init(&sys_props.attr_genid);
979 ret = sysfs_create_file(sys_props.kobj_topology,
980 &sys_props.attr_genid);
981 if (ret < 0)
982 return ret;
983
984 sys_props.attr_props.name = "system_properties";
985 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
986 sysfs_attr_init(&sys_props.attr_props);
987 ret = sysfs_create_file(sys_props.kobj_topology,
988 &sys_props.attr_props);
989 if (ret < 0)
990 return ret;
991 }
992
993 kfd_remove_sysfs_node_tree();
994
995 return kfd_build_sysfs_node_tree();
996}
997
998static void kfd_topology_release_sysfs(void)
999{
1000 kfd_remove_sysfs_node_tree();
1001 if (sys_props.kobj_topology) {
1002 sysfs_remove_file(sys_props.kobj_topology,
1003 &sys_props.attr_genid);
1004 sysfs_remove_file(sys_props.kobj_topology,
1005 &sys_props.attr_props);
1006 if (sys_props.kobj_nodes) {
1007 kobject_del(sys_props.kobj_nodes);
1008 kobject_put(sys_props.kobj_nodes);
16b9201c 1009 sys_props.kobj_nodes = NULL;
5b5c4e40
EP		 1010 }
1011 kobject_del(sys_props.kobj_topology);
1012 kobject_put(sys_props.kobj_topology);
16b9201c 1013 sys_props.kobj_topology = NULL;
5b5c4e40
EP		 1014 }
1015}
1016
1017int kfd_topology_init(void)
1018{
16b9201c 1019 void *crat_image = NULL;
5b5c4e40
EP		 1020 size_t image_size = 0;
1021 int ret;
1022
1023 /*
1024 * Initialize the head for the topology device list
1025 */
1026 INIT_LIST_HEAD(&topology_device_list);
1027 init_rwsem(&topology_lock);
1028 topology_crat_parsed = 0;
1029
1030 memset(&sys_props, 0, sizeof(sys_props));
1031
1032 /*
1033 * Get the CRAT image from the ACPI
1034 */
1035 ret = kfd_topology_get_crat_acpi(crat_image, &image_size);
1036 if (ret == 0 && image_size > 0) {
1037 pr_info("Found CRAT image with size=%zd\n", image_size);
1038 crat_image = kmalloc(image_size, GFP_KERNEL);
1039 if (!crat_image) {
1040 ret = -ENOMEM;
1041 pr_err("No memory for allocating CRAT image\n");
1042 goto err;
1043 }
1044 ret = kfd_topology_get_crat_acpi(crat_image, &image_size);
1045
1046 if (ret == 0) {
1047 down_write(&topology_lock);
1048 ret = kfd_parse_crat_table(crat_image);
1049 if (ret == 0)
1050 ret = kfd_topology_update_sysfs();
1051 up_write(&topology_lock);
1052 } else {
1053 pr_err("Couldn't get CRAT table size from ACPI\n");
1054 }
1055 kfree(crat_image);
1056 } else if (ret == -ENODATA) {
1057 ret = 0;
1058 } else {
1059 pr_err("Couldn't get CRAT table size from ACPI\n");
1060 }
1061
1062err:
1063 pr_info("Finished initializing topology ret=%d\n", ret);
1064 return ret;
1065}
1066
1067void kfd_topology_shutdown(void)
1068{
1069 kfd_topology_release_sysfs();
1070 kfd_release_live_view();
1071}
1072
1073static void kfd_debug_print_topology(void)
1074{
1075 struct kfd_topology_device *dev;
1076 uint32_t i = 0;
1077
1078 pr_info("DEBUG PRINT OF TOPOLOGY:");
1079 list_for_each_entry(dev, &topology_device_list, list) {
1080 pr_info("Node: %d\n", i);
1081 pr_info("\tGPU assigned: %s\n", (dev->gpu ? "yes" : "no"));
1082 pr_info("\tCPU count: %d\n", dev->node_props.cpu_cores_count);
1083 pr_info("\tSIMD count: %d", dev->node_props.simd_count);
1084 i++;
1085 }
1086}
1087
1088static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1089{
1090 uint32_t hashout;
1091 uint32_t buf[7];
1092 int i;
1093
1094 if (!gpu)
1095 return 0;
1096
1097 buf[0] = gpu->pdev->devfn;
1098 buf[1] = gpu->pdev->subsystem_vendor;
1099 buf[2] = gpu->pdev->subsystem_device;
1100 buf[3] = gpu->pdev->device;
1101 buf[4] = gpu->pdev->bus->number;
1102 buf[5] = (uint32_t)(kfd2kgd->get_vmem_size(gpu->kgd) & 0xffffffff);
1103 buf[6] = (uint32_t)(kfd2kgd->get_vmem_size(gpu->kgd) >> 32);
1104
1105 for (i = 0, hashout = 0; i < 7; i++)
1106 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1107
1108 return hashout;
1109}
1110
1111static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1112{
1113 struct kfd_topology_device *dev;
16b9201c 1114 struct kfd_topology_device *out_dev = NULL;
5b5c4e40
EP		 1115
1116 BUG_ON(!gpu);
1117
1118 list_for_each_entry(dev, &topology_device_list, list)
16b9201c 1119 if (dev->gpu == NULL && dev->node_props.simd_count > 0) {
5b5c4e40
EP		 1120 dev->gpu = gpu;
1121 out_dev = dev;
1122 break;
1123 }
1124
1125 return out_dev;
1126}
1127
1128static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1129{
1130 /*
1131 * TODO: Generate an event for thunk about the arrival/removal
1132 * of the GPU
1133 */
1134}
1135
1136int kfd_topology_add_device(struct kfd_dev *gpu)
1137{
1138 uint32_t gpu_id;
1139 struct kfd_topology_device *dev;
1140 int res;
1141
1142 BUG_ON(!gpu);
1143
1144 gpu_id = kfd_generate_gpu_id(gpu);
1145
1146 pr_debug("kfd: Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1147
1148 down_write(&topology_lock);
1149 /*
1150 * Try to assign the GPU to existing topology device (generated from
1151 * CRAT table
1152 */
1153 dev = kfd_assign_gpu(gpu);
1154 if (!dev) {
1155 pr_info("GPU was not found in the current topology. Extending.\n");
1156 kfd_debug_print_topology();
1157 dev = kfd_create_topology_device();
1158 if (!dev) {
1159 res = -ENOMEM;
1160 goto err;
1161 }
1162 dev->gpu = gpu;
1163
1164 /*
1165 * TODO: Make a call to retrieve topology information from the
1166 * GPU vBIOS
1167 */
1168
1169 /*
1170 * Update the SYSFS tree, since we added another topology device
1171 */
1172 if (kfd_topology_update_sysfs() < 0)
1173 kfd_topology_release_sysfs();
1174
1175 }
1176
1177 dev->gpu_id = gpu_id;
1178 gpu->id = gpu_id;
1179 dev->node_props.vendor_id = gpu->pdev->vendor;
1180 dev->node_props.device_id = gpu->pdev->device;
1181 dev->node_props.location_id = (gpu->pdev->bus->number << 24) +
1182 (gpu->pdev->devfn & 0xffffff);
1183 /*
1184 * TODO: Retrieve max engine clock values from KGD
1185 */
1186
1187 res = 0;
1188
1189err:
1190 up_write(&topology_lock);
1191
1192 if (res == 0)
1193 kfd_notify_gpu_change(gpu_id, 1);
1194
1195 return res;
1196}
1197
1198int kfd_topology_remove_device(struct kfd_dev *gpu)
1199{
1200 struct kfd_topology_device *dev;
1201 uint32_t gpu_id;
1202 int res = -ENODEV;
1203
1204 BUG_ON(!gpu);
1205
1206 down_write(&topology_lock);
1207
1208 list_for_each_entry(dev, &topology_device_list, list)
1209 if (dev->gpu == gpu) {
1210 gpu_id = dev->gpu_id;
1211 kfd_remove_sysfs_node_entry(dev);
1212 kfd_release_topology_device(dev);
1213 res = 0;
1214 if (kfd_topology_update_sysfs() < 0)
1215 kfd_topology_release_sysfs();
1216 break;
1217 }
1218
1219 up_write(&topology_lock);
1220
1221 if (res == 0)
1222 kfd_notify_gpu_change(gpu_id, 0);
1223
1224 return res;
1225}
1226
1227/*
1228 * When idx is out of bounds, the function will return NULL
1229 */
1230struct kfd_dev *kfd_topology_enum_kfd_devices(uint8_t idx)
1231{
1232
1233 struct kfd_topology_device *top_dev;
1234 struct kfd_dev *device = NULL;
1235 uint8_t device_idx = 0;
1236
1237 down_read(&topology_lock);
1238
1239 list_for_each_entry(top_dev, &topology_device_list, list) {
1240 if (device_idx == idx) {
1241 device = top_dev->gpu;
1242 break;
1243 }
1244
1245 device_idx++;
1246 }
1247
1248 up_read(&topology_lock);
1249
1250 return device;
1251
1252}
Linux kernel - Deliverables
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