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Merge tag 'io_uring-5.11-2021-01-16' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / gpu / drm / amd / amdkfd / kfd_topology.c
bloba3fc2387381956169043c19c2de341833c80a757
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>
30 #include <linux/log2.h>
31 #include <linux/dmi.h>
32 #include <linux/atomic.h>
33
34 #include "kfd_priv.h"
35 #include "kfd_crat.h"
36 #include "kfd_topology.h"
37 #include "kfd_device_queue_manager.h"
38 #include "kfd_iommu.h"
39 #include "amdgpu_amdkfd.h"
40 #include "amdgpu_ras.h"
41
42 /* topology_device_list - Master list of all topology devices */
43 static struct list_head topology_device_list;
44 static struct kfd_system_properties sys_props;
45
46 static DECLARE_RWSEM(topology_lock);
47 static atomic_t topology_crat_proximity_domain;
48
49 struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
50 uint32_t proximity_domain)
51 {
52 struct kfd_topology_device *top_dev;
53 struct kfd_topology_device *device = NULL;
54
55 down_read(&topology_lock);
56
57 list_for_each_entry(top_dev, &topology_device_list, list)
58 if (top_dev->proximity_domain == proximity_domain) {
59 device = top_dev;
60 break;
61 }
62
63 up_read(&topology_lock);
64
65 return device;
66 }
67
68 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id)
69 {
70 struct kfd_topology_device *top_dev = NULL;
71 struct kfd_topology_device *ret = NULL;
72
73 down_read(&topology_lock);
74
75 list_for_each_entry(top_dev, &topology_device_list, list)
76 if (top_dev->gpu_id == gpu_id) {
77 ret = top_dev;
78 break;
79 }
80
81 up_read(&topology_lock);
82
83 return ret;
84 }
85
86 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id)
87 {
88 struct kfd_topology_device *top_dev;
89
90 top_dev = kfd_topology_device_by_id(gpu_id);
91 if (!top_dev)
92 return NULL;
93
94 return top_dev->gpu;
95 }
96
97 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
98 {
99 struct kfd_topology_device *top_dev;
100 struct kfd_dev *device = NULL;
101
102 down_read(&topology_lock);
103
104 list_for_each_entry(top_dev, &topology_device_list, list)
105 if (top_dev->gpu && top_dev->gpu->pdev == pdev) {
106 device = top_dev->gpu;
107 break;
108 }
109
110 up_read(&topology_lock);
111
112 return device;
113 }
114
115 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd)
116 {
117 struct kfd_topology_device *top_dev;
118 struct kfd_dev *device = NULL;
119
120 down_read(&topology_lock);
121
122 list_for_each_entry(top_dev, &topology_device_list, list)
123 if (top_dev->gpu && top_dev->gpu->kgd == kgd) {
124 device = top_dev->gpu;
125 break;
126 }
127
128 up_read(&topology_lock);
129
130 return device;
131 }
132
133 /* Called with write topology_lock acquired */
134 static void kfd_release_topology_device(struct kfd_topology_device *dev)
135 {
136 struct kfd_mem_properties *mem;
137 struct kfd_cache_properties *cache;
138 struct kfd_iolink_properties *iolink;
139 struct kfd_perf_properties *perf;
140
141 list_del(&dev->list);
142
143 while (dev->mem_props.next != &dev->mem_props) {
144 mem = container_of(dev->mem_props.next,
145 struct kfd_mem_properties, list);
146 list_del(&mem->list);
147 kfree(mem);
148 }
149
150 while (dev->cache_props.next != &dev->cache_props) {
151 cache = container_of(dev->cache_props.next,
152 struct kfd_cache_properties, list);
153 list_del(&cache->list);
154 kfree(cache);
155 }
156
157 while (dev->io_link_props.next != &dev->io_link_props) {
158 iolink = container_of(dev->io_link_props.next,
159 struct kfd_iolink_properties, list);
160 list_del(&iolink->list);
161 kfree(iolink);
162 }
163
164 while (dev->perf_props.next != &dev->perf_props) {
165 perf = container_of(dev->perf_props.next,
166 struct kfd_perf_properties, list);
167 list_del(&perf->list);
168 kfree(perf);
169 }
170
171 kfree(dev);
172 }
173
174 void kfd_release_topology_device_list(struct list_head *device_list)
175 {
176 struct kfd_topology_device *dev;
177
178 while (!list_empty(device_list)) {
179 dev = list_first_entry(device_list,
180 struct kfd_topology_device, list);
181 kfd_release_topology_device(dev);
182 }
183 }
184
185 static void kfd_release_live_view(void)
186 {
187 kfd_release_topology_device_list(&topology_device_list);
188 memset(&sys_props, 0, sizeof(sys_props));
189 }
190
191 struct kfd_topology_device *kfd_create_topology_device(
192 struct list_head *device_list)
193 {
194 struct kfd_topology_device *dev;
195
196 dev = kfd_alloc_struct(dev);
197 if (!dev) {
198 pr_err("No memory to allocate a topology device");
199 return NULL;
200 }
201
202 INIT_LIST_HEAD(&dev->mem_props);
203 INIT_LIST_HEAD(&dev->cache_props);
204 INIT_LIST_HEAD(&dev->io_link_props);
205 INIT_LIST_HEAD(&dev->perf_props);
206
207 list_add_tail(&dev->list, device_list);
208
209 return dev;
210 }
211
212
213 #define sysfs_show_gen_prop(buffer, offs, fmt, ...) \
214 (offs += snprintf(buffer+offs, PAGE_SIZE-offs, \
215 fmt, __VA_ARGS__))
216 #define sysfs_show_32bit_prop(buffer, offs, name, value) \
217 sysfs_show_gen_prop(buffer, offs, "%s %u\n", name, value)
218 #define sysfs_show_64bit_prop(buffer, offs, name, value) \
219 sysfs_show_gen_prop(buffer, offs, "%s %llu\n", name, value)
220 #define sysfs_show_32bit_val(buffer, offs, value) \
221 sysfs_show_gen_prop(buffer, offs, "%u\n", value)
222 #define sysfs_show_str_val(buffer, offs, value) \
223 sysfs_show_gen_prop(buffer, offs, "%s\n", value)
224
225 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
226 char *buffer)
227 {
228 int offs = 0;
229
230 /* Making sure that the buffer is an empty string */
231 buffer[0] = 0;
232
233 if (attr == &sys_props.attr_genid) {
234 sysfs_show_32bit_val(buffer, offs,
235 sys_props.generation_count);
236 } else if (attr == &sys_props.attr_props) {
237 sysfs_show_64bit_prop(buffer, offs, "platform_oem",
238 sys_props.platform_oem);
239 sysfs_show_64bit_prop(buffer, offs, "platform_id",
240 sys_props.platform_id);
241 sysfs_show_64bit_prop(buffer, offs, "platform_rev",
242 sys_props.platform_rev);
243 } else {
244 offs = -EINVAL;
245 }
246
247 return offs;
248 }
249
250 static void kfd_topology_kobj_release(struct kobject *kobj)
251 {
252 kfree(kobj);
253 }
254
255 static const struct sysfs_ops sysprops_ops = {
256 .show = sysprops_show,
257 };
258
259 static struct kobj_type sysprops_type = {
260 .release = kfd_topology_kobj_release,
261 .sysfs_ops = &sysprops_ops,
262 };
263
264 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
265 char *buffer)
266 {
267 int offs = 0;
268 struct kfd_iolink_properties *iolink;
269
270 /* Making sure that the buffer is an empty string */
271 buffer[0] = 0;
272
273 iolink = container_of(attr, struct kfd_iolink_properties, attr);
274 if (iolink->gpu && kfd_devcgroup_check_permission(iolink->gpu))
275 return -EPERM;
276 sysfs_show_32bit_prop(buffer, offs, "type", iolink->iolink_type);
277 sysfs_show_32bit_prop(buffer, offs, "version_major", iolink->ver_maj);
278 sysfs_show_32bit_prop(buffer, offs, "version_minor", iolink->ver_min);
279 sysfs_show_32bit_prop(buffer, offs, "node_from", iolink->node_from);
280 sysfs_show_32bit_prop(buffer, offs, "node_to", iolink->node_to);
281 sysfs_show_32bit_prop(buffer, offs, "weight", iolink->weight);
282 sysfs_show_32bit_prop(buffer, offs, "min_latency", iolink->min_latency);
283 sysfs_show_32bit_prop(buffer, offs, "max_latency", iolink->max_latency);
284 sysfs_show_32bit_prop(buffer, offs, "min_bandwidth",
285 iolink->min_bandwidth);
286 sysfs_show_32bit_prop(buffer, offs, "max_bandwidth",
287 iolink->max_bandwidth);
288 sysfs_show_32bit_prop(buffer, offs, "recommended_transfer_size",
289 iolink->rec_transfer_size);
290 sysfs_show_32bit_prop(buffer, offs, "flags", iolink->flags);
291
292 return offs;
293 }
294
295 static const struct sysfs_ops iolink_ops = {
296 .show = iolink_show,
297 };
298
299 static struct kobj_type iolink_type = {
300 .release = kfd_topology_kobj_release,
301 .sysfs_ops = &iolink_ops,
302 };
303
304 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
305 char *buffer)
306 {
307 int offs = 0;
308 struct kfd_mem_properties *mem;
309
310 /* Making sure that the buffer is an empty string */
311 buffer[0] = 0;
312
313 mem = container_of(attr, struct kfd_mem_properties, attr);
314 if (mem->gpu && kfd_devcgroup_check_permission(mem->gpu))
315 return -EPERM;
316 sysfs_show_32bit_prop(buffer, offs, "heap_type", mem->heap_type);
317 sysfs_show_64bit_prop(buffer, offs, "size_in_bytes",
318 mem->size_in_bytes);
319 sysfs_show_32bit_prop(buffer, offs, "flags", mem->flags);
320 sysfs_show_32bit_prop(buffer, offs, "width", mem->width);
321 sysfs_show_32bit_prop(buffer, offs, "mem_clk_max",
322 mem->mem_clk_max);
323
324 return offs;
325 }
326
327 static const struct sysfs_ops mem_ops = {
328 .show = mem_show,
329 };
330
331 static struct kobj_type mem_type = {
332 .release = kfd_topology_kobj_release,
333 .sysfs_ops = &mem_ops,
334 };
335
336 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
337 char *buffer)
338 {
339 int offs = 0;
340 uint32_t i, j;
341 struct kfd_cache_properties *cache;
342
343 /* Making sure that the buffer is an empty string */
344 buffer[0] = 0;
345
346 cache = container_of(attr, struct kfd_cache_properties, attr);
347 if (cache->gpu && kfd_devcgroup_check_permission(cache->gpu))
348 return -EPERM;
349 sysfs_show_32bit_prop(buffer, offs, "processor_id_low",
350 cache->processor_id_low);
351 sysfs_show_32bit_prop(buffer, offs, "level", cache->cache_level);
352 sysfs_show_32bit_prop(buffer, offs, "size", cache->cache_size);
353 sysfs_show_32bit_prop(buffer, offs, "cache_line_size",
354 cache->cacheline_size);
355 sysfs_show_32bit_prop(buffer, offs, "cache_lines_per_tag",
356 cache->cachelines_per_tag);
357 sysfs_show_32bit_prop(buffer, offs, "association", cache->cache_assoc);
358 sysfs_show_32bit_prop(buffer, offs, "latency", cache->cache_latency);
359 sysfs_show_32bit_prop(buffer, offs, "type", cache->cache_type);
360 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "sibling_map ");
361 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
362 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++)
363 /* Check each bit */
364 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "%d,",
365 (cache->sibling_map[i] >> j) & 1);
366
367 /* Replace the last "," with end of line */
368 buffer[offs-1] = '\n';
369 return offs;
370 }
371
372 static const struct sysfs_ops cache_ops = {
373 .show = kfd_cache_show,
374 };
375
376 static struct kobj_type cache_type = {
377 .release = kfd_topology_kobj_release,
378 .sysfs_ops = &cache_ops,
379 };
380
381 /****** Sysfs of Performance Counters ******/
382
383 struct kfd_perf_attr {
384 struct kobj_attribute attr;
385 uint32_t data;
386 };
387
388 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
389 char *buf)
390 {
391 int offs = 0;
392 struct kfd_perf_attr *attr;
393
394 buf[0] = 0;
395 attr = container_of(attrs, struct kfd_perf_attr, attr);
396 if (!attr->data) /* invalid data for PMC */
397 return 0;
398 else
399 return sysfs_show_32bit_val(buf, offs, attr->data);
400 }
401
402 #define KFD_PERF_DESC(_name, _data) \
403 { \
404 .attr = __ATTR(_name, 0444, perf_show, NULL), \
405 .data = _data, \
406 }
407
408 static struct kfd_perf_attr perf_attr_iommu[] = {
409 KFD_PERF_DESC(max_concurrent, 0),
410 KFD_PERF_DESC(num_counters, 0),
411 KFD_PERF_DESC(counter_ids, 0),
412 };
413 /****************************************/
414
415 static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
416 char *buffer)
417 {
418 int offs = 0;
419 struct kfd_topology_device *dev;
420 uint32_t log_max_watch_addr;
421
422 /* Making sure that the buffer is an empty string */
423 buffer[0] = 0;
424
425 if (strcmp(attr->name, "gpu_id") == 0) {
426 dev = container_of(attr, struct kfd_topology_device,
427 attr_gpuid);
428 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu))
429 return -EPERM;
430 return sysfs_show_32bit_val(buffer, offs, dev->gpu_id);
431 }
432
433 if (strcmp(attr->name, "name") == 0) {
434 dev = container_of(attr, struct kfd_topology_device,
435 attr_name);
436
437 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu))
438 return -EPERM;
439 return sysfs_show_str_val(buffer, offs, dev->node_props.name);
440 }
441
442 dev = container_of(attr, struct kfd_topology_device,
443 attr_props);
444 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu))
445 return -EPERM;
446 sysfs_show_32bit_prop(buffer, offs, "cpu_cores_count",
447 dev->node_props.cpu_cores_count);
448 sysfs_show_32bit_prop(buffer, offs, "simd_count",
449 dev->gpu ? dev->node_props.simd_count : 0);
450 sysfs_show_32bit_prop(buffer, offs, "mem_banks_count",
451 dev->node_props.mem_banks_count);
452 sysfs_show_32bit_prop(buffer, offs, "caches_count",
453 dev->node_props.caches_count);
454 sysfs_show_32bit_prop(buffer, offs, "io_links_count",
455 dev->node_props.io_links_count);
456 sysfs_show_32bit_prop(buffer, offs, "cpu_core_id_base",
457 dev->node_props.cpu_core_id_base);
458 sysfs_show_32bit_prop(buffer, offs, "simd_id_base",
459 dev->node_props.simd_id_base);
460 sysfs_show_32bit_prop(buffer, offs, "max_waves_per_simd",
461 dev->node_props.max_waves_per_simd);
462 sysfs_show_32bit_prop(buffer, offs, "lds_size_in_kb",
463 dev->node_props.lds_size_in_kb);
464 sysfs_show_32bit_prop(buffer, offs, "gds_size_in_kb",
465 dev->node_props.gds_size_in_kb);
466 sysfs_show_32bit_prop(buffer, offs, "num_gws",
467 dev->node_props.num_gws);
468 sysfs_show_32bit_prop(buffer, offs, "wave_front_size",
469 dev->node_props.wave_front_size);
470 sysfs_show_32bit_prop(buffer, offs, "array_count",
471 dev->node_props.array_count);
472 sysfs_show_32bit_prop(buffer, offs, "simd_arrays_per_engine",
473 dev->node_props.simd_arrays_per_engine);
474 sysfs_show_32bit_prop(buffer, offs, "cu_per_simd_array",
475 dev->node_props.cu_per_simd_array);
476 sysfs_show_32bit_prop(buffer, offs, "simd_per_cu",
477 dev->node_props.simd_per_cu);
478 sysfs_show_32bit_prop(buffer, offs, "max_slots_scratch_cu",
479 dev->node_props.max_slots_scratch_cu);
480 sysfs_show_32bit_prop(buffer, offs, "vendor_id",
481 dev->node_props.vendor_id);
482 sysfs_show_32bit_prop(buffer, offs, "device_id",
483 dev->node_props.device_id);
484 sysfs_show_32bit_prop(buffer, offs, "location_id",
485 dev->node_props.location_id);
486 sysfs_show_32bit_prop(buffer, offs, "domain",
487 dev->node_props.domain);
488 sysfs_show_32bit_prop(buffer, offs, "drm_render_minor",
489 dev->node_props.drm_render_minor);
490 sysfs_show_64bit_prop(buffer, offs, "hive_id",
491 dev->node_props.hive_id);
492 sysfs_show_32bit_prop(buffer, offs, "num_sdma_engines",
493 dev->node_props.num_sdma_engines);
494 sysfs_show_32bit_prop(buffer, offs, "num_sdma_xgmi_engines",
495 dev->node_props.num_sdma_xgmi_engines);
496 sysfs_show_32bit_prop(buffer, offs, "num_sdma_queues_per_engine",
497 dev->node_props.num_sdma_queues_per_engine);
498 sysfs_show_32bit_prop(buffer, offs, "num_cp_queues",
499 dev->node_props.num_cp_queues);
500 sysfs_show_64bit_prop(buffer, offs, "unique_id",
501 dev->node_props.unique_id);
502
503 if (dev->gpu) {
504 log_max_watch_addr =
505 __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
506
507 if (log_max_watch_addr) {
508 dev->node_props.capability |=
509 HSA_CAP_WATCH_POINTS_SUPPORTED;
510
511 dev->node_props.capability |=
512 ((log_max_watch_addr <<
513 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
514 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
515 }
516
517 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
518 dev->node_props.capability |=
519 HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
520
521 sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_fcompute",
522 dev->node_props.max_engine_clk_fcompute);
523
524 sysfs_show_64bit_prop(buffer, offs, "local_mem_size", 0ULL);
525
526 sysfs_show_32bit_prop(buffer, offs, "fw_version",
527 dev->gpu->mec_fw_version);
528 sysfs_show_32bit_prop(buffer, offs, "capability",
529 dev->node_props.capability);
530 sysfs_show_32bit_prop(buffer, offs, "sdma_fw_version",
531 dev->gpu->sdma_fw_version);
532 }
533
534 return sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_ccompute",
535 cpufreq_quick_get_max(0)/1000);
536 }
537
538 static const struct sysfs_ops node_ops = {
539 .show = node_show,
540 };
541
542 static struct kobj_type node_type = {
543 .release = kfd_topology_kobj_release,
544 .sysfs_ops = &node_ops,
545 };
546
547 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
548 {
549 sysfs_remove_file(kobj, attr);
550 kobject_del(kobj);
551 kobject_put(kobj);
552 }
553
554 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
555 {
556 struct kfd_iolink_properties *iolink;
557 struct kfd_cache_properties *cache;
558 struct kfd_mem_properties *mem;
559 struct kfd_perf_properties *perf;
560
561 if (dev->kobj_iolink) {
562 list_for_each_entry(iolink, &dev->io_link_props, list)
563 if (iolink->kobj) {
564 kfd_remove_sysfs_file(iolink->kobj,
565 &iolink->attr);
566 iolink->kobj = NULL;
567 }
568 kobject_del(dev->kobj_iolink);
569 kobject_put(dev->kobj_iolink);
570 dev->kobj_iolink = NULL;
571 }
572
573 if (dev->kobj_cache) {
574 list_for_each_entry(cache, &dev->cache_props, list)
575 if (cache->kobj) {
576 kfd_remove_sysfs_file(cache->kobj,
577 &cache->attr);
578 cache->kobj = NULL;
579 }
580 kobject_del(dev->kobj_cache);
581 kobject_put(dev->kobj_cache);
582 dev->kobj_cache = NULL;
583 }
584
585 if (dev->kobj_mem) {
586 list_for_each_entry(mem, &dev->mem_props, list)
587 if (mem->kobj) {
588 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
589 mem->kobj = NULL;
590 }
591 kobject_del(dev->kobj_mem);
592 kobject_put(dev->kobj_mem);
593 dev->kobj_mem = NULL;
594 }
595
596 if (dev->kobj_perf) {
597 list_for_each_entry(perf, &dev->perf_props, list) {
598 kfree(perf->attr_group);
599 perf->attr_group = NULL;
600 }
601 kobject_del(dev->kobj_perf);
602 kobject_put(dev->kobj_perf);
603 dev->kobj_perf = NULL;
604 }
605
606 if (dev->kobj_node) {
607 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
608 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
609 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
610 kobject_del(dev->kobj_node);
611 kobject_put(dev->kobj_node);
612 dev->kobj_node = NULL;
613 }
614 }
615
616 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
617 uint32_t id)
618 {
619 struct kfd_iolink_properties *iolink;
620 struct kfd_cache_properties *cache;
621 struct kfd_mem_properties *mem;
622 struct kfd_perf_properties *perf;
623 int ret;
624 uint32_t i, num_attrs;
625 struct attribute **attrs;
626
627 if (WARN_ON(dev->kobj_node))
628 return -EEXIST;
629
630 /*
631 * Creating the sysfs folders
632 */
633 dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
634 if (!dev->kobj_node)
635 return -ENOMEM;
636
637 ret = kobject_init_and_add(dev->kobj_node, &node_type,
638 sys_props.kobj_nodes, "%d", id);
639 if (ret < 0) {
640 kobject_put(dev->kobj_node);
641 return ret;
642 }
643
644 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
645 if (!dev->kobj_mem)
646 return -ENOMEM;
647
648 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
649 if (!dev->kobj_cache)
650 return -ENOMEM;
651
652 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
653 if (!dev->kobj_iolink)
654 return -ENOMEM;
655
656 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
657 if (!dev->kobj_perf)
658 return -ENOMEM;
659
660 /*
661 * Creating sysfs files for node properties
662 */
663 dev->attr_gpuid.name = "gpu_id";
664 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
665 sysfs_attr_init(&dev->attr_gpuid);
666 dev->attr_name.name = "name";
667 dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
668 sysfs_attr_init(&dev->attr_name);
669 dev->attr_props.name = "properties";
670 dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
671 sysfs_attr_init(&dev->attr_props);
672 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
673 if (ret < 0)
674 return ret;
675 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
676 if (ret < 0)
677 return ret;
678 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
679 if (ret < 0)
680 return ret;
681
682 i = 0;
683 list_for_each_entry(mem, &dev->mem_props, list) {
684 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
685 if (!mem->kobj)
686 return -ENOMEM;
687 ret = kobject_init_and_add(mem->kobj, &mem_type,
688 dev->kobj_mem, "%d", i);
689 if (ret < 0) {
690 kobject_put(mem->kobj);
691 return ret;
692 }
693
694 mem->attr.name = "properties";
695 mem->attr.mode = KFD_SYSFS_FILE_MODE;
696 sysfs_attr_init(&mem->attr);
697 ret = sysfs_create_file(mem->kobj, &mem->attr);
698 if (ret < 0)
699 return ret;
700 i++;
701 }
702
703 i = 0;
704 list_for_each_entry(cache, &dev->cache_props, list) {
705 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
706 if (!cache->kobj)
707 return -ENOMEM;
708 ret = kobject_init_and_add(cache->kobj, &cache_type,
709 dev->kobj_cache, "%d", i);
710 if (ret < 0) {
711 kobject_put(cache->kobj);
712 return ret;
713 }
714
715 cache->attr.name = "properties";
716 cache->attr.mode = KFD_SYSFS_FILE_MODE;
717 sysfs_attr_init(&cache->attr);
718 ret = sysfs_create_file(cache->kobj, &cache->attr);
719 if (ret < 0)
720 return ret;
721 i++;
722 }
723
724 i = 0;
725 list_for_each_entry(iolink, &dev->io_link_props, list) {
726 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
727 if (!iolink->kobj)
728 return -ENOMEM;
729 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
730 dev->kobj_iolink, "%d", i);
731 if (ret < 0) {
732 kobject_put(iolink->kobj);
733 return ret;
734 }
735
736 iolink->attr.name = "properties";
737 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
738 sysfs_attr_init(&iolink->attr);
739 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
740 if (ret < 0)
741 return ret;
742 i++;
743 }
744
745 /* All hardware blocks have the same number of attributes. */
746 num_attrs = ARRAY_SIZE(perf_attr_iommu);
747 list_for_each_entry(perf, &dev->perf_props, list) {
748 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
749 * num_attrs + sizeof(struct attribute_group),
750 GFP_KERNEL);
751 if (!perf->attr_group)
752 return -ENOMEM;
753
754 attrs = (struct attribute **)(perf->attr_group + 1);
755 if (!strcmp(perf->block_name, "iommu")) {
756 /* Information of IOMMU's num_counters and counter_ids is shown
757 * under /sys/bus/event_source/devices/amd_iommu. We don't
758 * duplicate here.
759 */
760 perf_attr_iommu[0].data = perf->max_concurrent;
761 for (i = 0; i < num_attrs; i++)
762 attrs[i] = &perf_attr_iommu[i].attr.attr;
763 }
764 perf->attr_group->name = perf->block_name;
765 perf->attr_group->attrs = attrs;
766 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
767 if (ret < 0)
768 return ret;
769 }
770
771 return 0;
772 }
773
774 /* Called with write topology lock acquired */
775 static int kfd_build_sysfs_node_tree(void)
776 {
777 struct kfd_topology_device *dev;
778 int ret;
779 uint32_t i = 0;
780
781 list_for_each_entry(dev, &topology_device_list, list) {
782 ret = kfd_build_sysfs_node_entry(dev, i);
783 if (ret < 0)
784 return ret;
785 i++;
786 }
787
788 return 0;
789 }
790
791 /* Called with write topology lock acquired */
792 static void kfd_remove_sysfs_node_tree(void)
793 {
794 struct kfd_topology_device *dev;
795
796 list_for_each_entry(dev, &topology_device_list, list)
797 kfd_remove_sysfs_node_entry(dev);
798 }
799
800 static int kfd_topology_update_sysfs(void)
801 {
802 int ret;
803
804 if (!sys_props.kobj_topology) {
805 sys_props.kobj_topology =
806 kfd_alloc_struct(sys_props.kobj_topology);
807 if (!sys_props.kobj_topology)
808 return -ENOMEM;
809
810 ret = kobject_init_and_add(sys_props.kobj_topology,
811 &sysprops_type, &kfd_device->kobj,
812 "topology");
813 if (ret < 0) {
814 kobject_put(sys_props.kobj_topology);
815 return ret;
816 }
817
818 sys_props.kobj_nodes = kobject_create_and_add("nodes",
819 sys_props.kobj_topology);
820 if (!sys_props.kobj_nodes)
821 return -ENOMEM;
822
823 sys_props.attr_genid.name = "generation_id";
824 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
825 sysfs_attr_init(&sys_props.attr_genid);
826 ret = sysfs_create_file(sys_props.kobj_topology,
827 &sys_props.attr_genid);
828 if (ret < 0)
829 return ret;
830
831 sys_props.attr_props.name = "system_properties";
832 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
833 sysfs_attr_init(&sys_props.attr_props);
834 ret = sysfs_create_file(sys_props.kobj_topology,
835 &sys_props.attr_props);
836 if (ret < 0)
837 return ret;
838 }
839
840 kfd_remove_sysfs_node_tree();
841
842 return kfd_build_sysfs_node_tree();
843 }
844
845 static void kfd_topology_release_sysfs(void)
846 {
847 kfd_remove_sysfs_node_tree();
848 if (sys_props.kobj_topology) {
849 sysfs_remove_file(sys_props.kobj_topology,
850 &sys_props.attr_genid);
851 sysfs_remove_file(sys_props.kobj_topology,
852 &sys_props.attr_props);
853 if (sys_props.kobj_nodes) {
854 kobject_del(sys_props.kobj_nodes);
855 kobject_put(sys_props.kobj_nodes);
856 sys_props.kobj_nodes = NULL;
857 }
858 kobject_del(sys_props.kobj_topology);
859 kobject_put(sys_props.kobj_topology);
860 sys_props.kobj_topology = NULL;
861 }
862 }
863
864 /* Called with write topology_lock acquired */
865 static void kfd_topology_update_device_list(struct list_head *temp_list,
866 struct list_head *master_list)
867 {
868 while (!list_empty(temp_list)) {
869 list_move_tail(temp_list->next, master_list);
870 sys_props.num_devices++;
871 }
872 }
873
874 static void kfd_debug_print_topology(void)
875 {
876 struct kfd_topology_device *dev;
877
878 down_read(&topology_lock);
879
880 dev = list_last_entry(&topology_device_list,
881 struct kfd_topology_device, list);
882 if (dev) {
883 if (dev->node_props.cpu_cores_count &&
884 dev->node_props.simd_count) {
885 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
886 dev->node_props.device_id,
887 dev->node_props.vendor_id);
888 } else if (dev->node_props.cpu_cores_count)
889 pr_info("Topology: Add CPU node\n");
890 else if (dev->node_props.simd_count)
891 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
892 dev->node_props.device_id,
893 dev->node_props.vendor_id);
894 }
895 up_read(&topology_lock);
896 }
897
898 /* Helper function for intializing platform_xx members of
899 * kfd_system_properties. Uses OEM info from the last CPU/APU node.
900 */
901 static void kfd_update_system_properties(void)
902 {
903 struct kfd_topology_device *dev;
904
905 down_read(&topology_lock);
906 dev = list_last_entry(&topology_device_list,
907 struct kfd_topology_device, list);
908 if (dev) {
909 sys_props.platform_id =
910 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
911 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
912 sys_props.platform_rev = dev->oem_revision;
913 }
914 up_read(&topology_lock);
915 }
916
917 static void find_system_memory(const struct dmi_header *dm,
918 void *private)
919 {
920 struct kfd_mem_properties *mem;
921 u16 mem_width, mem_clock;
922 struct kfd_topology_device *kdev =
923 (struct kfd_topology_device *)private;
924 const u8 *dmi_data = (const u8 *)(dm + 1);
925
926 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
927 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
928 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
929 list_for_each_entry(mem, &kdev->mem_props, list) {
930 if (mem_width != 0xFFFF && mem_width != 0)
931 mem->width = mem_width;
932 if (mem_clock != 0)
933 mem->mem_clk_max = mem_clock;
934 }
935 }
936 }
937
938 /*
939 * Performance counters information is not part of CRAT but we would like to
940 * put them in the sysfs under topology directory for Thunk to get the data.
941 * This function is called before updating the sysfs.
942 */
943 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
944 {
945 /* These are the only counters supported so far */
946 return kfd_iommu_add_perf_counters(kdev);
947 }
948
949 /* kfd_add_non_crat_information - Add information that is not currently
950 * defined in CRAT but is necessary for KFD topology
951 * @dev - topology device to which addition info is added
952 */
953 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
954 {
955 /* Check if CPU only node. */
956 if (!kdev->gpu) {
957 /* Add system memory information */
958 dmi_walk(find_system_memory, kdev);
959 }
960 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
961 }
962
963 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
964 * Ignore CRAT for all other devices. AMD APU is identified if both CPU
965 * and GPU cores are present.
966 * @device_list - topology device list created by parsing ACPI CRAT table.
967 * @return - TRUE if invalid, FALSE is valid.
968 */
969 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
970 {
971 struct kfd_topology_device *dev;
972
973 list_for_each_entry(dev, device_list, list) {
974 if (dev->node_props.cpu_cores_count &&
975 dev->node_props.simd_count)
976 return false;
977 }
978 pr_info("Ignoring ACPI CRAT on non-APU system\n");
979 return true;
980 }
981
982 int kfd_topology_init(void)
983 {
984 void *crat_image = NULL;
985 size_t image_size = 0;
986 int ret;
987 struct list_head temp_topology_device_list;
988 int cpu_only_node = 0;
989 struct kfd_topology_device *kdev;
990 int proximity_domain;
991
992 /* topology_device_list - Master list of all topology devices
993 * temp_topology_device_list - temporary list created while parsing CRAT
994 * or VCRAT. Once parsing is complete the contents of list is moved to
995 * topology_device_list
996 */
997
998 /* Initialize the head for the both the lists */
999 INIT_LIST_HEAD(&topology_device_list);
1000 INIT_LIST_HEAD(&temp_topology_device_list);
1001 init_rwsem(&topology_lock);
1002
1003 memset(&sys_props, 0, sizeof(sys_props));
1004
1005 /* Proximity domains in ACPI CRAT tables start counting at
1006 * 0. The same should be true for virtual CRAT tables created
1007 * at this stage. GPUs added later in kfd_topology_add_device
1008 * use a counter.
1009 */
1010 proximity_domain = 0;
1011
1012 /*
1013 * Get the CRAT image from the ACPI. If ACPI doesn't have one
1014 * or if ACPI CRAT is invalid create a virtual CRAT.
1015 * NOTE: The current implementation expects all AMD APUs to have
1016 * CRAT. If no CRAT is available, it is assumed to be a CPU
1017 */
1018 ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
1019 if (!ret) {
1020 ret = kfd_parse_crat_table(crat_image,
1021 &temp_topology_device_list,
1022 proximity_domain);
1023 if (ret ||
1024 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
1025 kfd_release_topology_device_list(
1026 &temp_topology_device_list);
1027 kfd_destroy_crat_image(crat_image);
1028 crat_image = NULL;
1029 }
1030 }
1031
1032 if (!crat_image) {
1033 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
1034 COMPUTE_UNIT_CPU, NULL,
1035 proximity_domain);
1036 cpu_only_node = 1;
1037 if (ret) {
1038 pr_err("Error creating VCRAT table for CPU\n");
1039 return ret;
1040 }
1041
1042 ret = kfd_parse_crat_table(crat_image,
1043 &temp_topology_device_list,
1044 proximity_domain);
1045 if (ret) {
1046 pr_err("Error parsing VCRAT table for CPU\n");
1047 goto err;
1048 }
1049 }
1050
1051 kdev = list_first_entry(&temp_topology_device_list,
1052 struct kfd_topology_device, list);
1053 kfd_add_perf_to_topology(kdev);
1054
1055 down_write(&topology_lock);
1056 kfd_topology_update_device_list(&temp_topology_device_list,
1057 &topology_device_list);
1058 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
1059 ret = kfd_topology_update_sysfs();
1060 up_write(&topology_lock);
1061
1062 if (!ret) {
1063 sys_props.generation_count++;
1064 kfd_update_system_properties();
1065 kfd_debug_print_topology();
1066 } else
1067 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1068
1069 /* For nodes with GPU, this information gets added
1070 * when GPU is detected (kfd_topology_add_device).
1071 */
1072 if (cpu_only_node) {
1073 /* Add additional information to CPU only node created above */
1074 down_write(&topology_lock);
1075 kdev = list_first_entry(&topology_device_list,
1076 struct kfd_topology_device, list);
1077 up_write(&topology_lock);
1078 kfd_add_non_crat_information(kdev);
1079 }
1080
1081 err:
1082 kfd_destroy_crat_image(crat_image);
1083 return ret;
1084 }
1085
1086 void kfd_topology_shutdown(void)
1087 {
1088 down_write(&topology_lock);
1089 kfd_topology_release_sysfs();
1090 kfd_release_live_view();
1091 up_write(&topology_lock);
1092 }
1093
1094 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1095 {
1096 uint32_t hashout;
1097 uint32_t buf[7];
1098 uint64_t local_mem_size;
1099 int i;
1100 struct kfd_local_mem_info local_mem_info;
1101
1102 if (!gpu)
1103 return 0;
1104
1105 amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info);
1106
1107 local_mem_size = local_mem_info.local_mem_size_private +
1108 local_mem_info.local_mem_size_public;
1109
1110 buf[0] = gpu->pdev->devfn;
1111 buf[1] = gpu->pdev->subsystem_vendor |
1112 (gpu->pdev->subsystem_device << 16);
1113 buf[2] = pci_domain_nr(gpu->pdev->bus);
1114 buf[3] = gpu->pdev->device;
1115 buf[4] = gpu->pdev->bus->number;
1116 buf[5] = lower_32_bits(local_mem_size);
1117 buf[6] = upper_32_bits(local_mem_size);
1118
1119 for (i = 0, hashout = 0; i < 7; i++)
1120 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1121
1122 return hashout;
1123 }
1124 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1125 * the GPU device is not already present in the topology device
1126 * list then return NULL. This means a new topology device has to
1127 * be created for this GPU.
1128 */
1129 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1130 {
1131 struct kfd_topology_device *dev;
1132 struct kfd_topology_device *out_dev = NULL;
1133 struct kfd_mem_properties *mem;
1134 struct kfd_cache_properties *cache;
1135 struct kfd_iolink_properties *iolink;
1136
1137 down_write(&topology_lock);
1138 list_for_each_entry(dev, &topology_device_list, list) {
1139 /* Discrete GPUs need their own topology device list
1140 * entries. Don't assign them to CPU/APU nodes.
1141 */
1142 if (!gpu->use_iommu_v2 &&
1143 dev->node_props.cpu_cores_count)
1144 continue;
1145
1146 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
1147 dev->gpu = gpu;
1148 out_dev = dev;
1149
1150 list_for_each_entry(mem, &dev->mem_props, list)
1151 mem->gpu = dev->gpu;
1152 list_for_each_entry(cache, &dev->cache_props, list)
1153 cache->gpu = dev->gpu;
1154 list_for_each_entry(iolink, &dev->io_link_props, list)
1155 iolink->gpu = dev->gpu;
1156 break;
1157 }
1158 }
1159 up_write(&topology_lock);
1160 return out_dev;
1161 }
1162
1163 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1164 {
1165 /*
1166 * TODO: Generate an event for thunk about the arrival/removal
1167 * of the GPU
1168 */
1169 }
1170
1171 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1172 * patch this after CRAT parsing.
1173 */
1174 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1175 {
1176 struct kfd_mem_properties *mem;
1177 struct kfd_local_mem_info local_mem_info;
1178
1179 if (!dev)
1180 return;
1181
1182 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1183 * single bank of VRAM local memory.
1184 * for dGPUs - VCRAT reports only one bank of Local Memory
1185 * for APUs - If CRAT from ACPI reports more than one bank, then
1186 * all the banks will report the same mem_clk_max information
1187 */
1188 amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info);
1189
1190 list_for_each_entry(mem, &dev->mem_props, list)
1191 mem->mem_clk_max = local_mem_info.mem_clk_max;
1192 }
1193
1194 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1195 {
1196 struct kfd_iolink_properties *link, *cpu_link;
1197 struct kfd_topology_device *cpu_dev;
1198 uint32_t cap;
1199 uint32_t cpu_flag = CRAT_IOLINK_FLAGS_ENABLED;
1200 uint32_t flag = CRAT_IOLINK_FLAGS_ENABLED;
1201
1202 if (!dev || !dev->gpu)
1203 return;
1204
1205 pcie_capability_read_dword(dev->gpu->pdev,
1206 PCI_EXP_DEVCAP2, &cap);
1207
1208 if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
1209 PCI_EXP_DEVCAP2_ATOMIC_COMP64)))
1210 cpu_flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1211 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1212
1213 if (!dev->gpu->pci_atomic_requested ||
1214 dev->gpu->device_info->asic_family == CHIP_HAWAII)
1215 flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1216 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1217
1218 /* GPU only creates direct links so apply flags setting to all */
1219 list_for_each_entry(link, &dev->io_link_props, list) {
1220 link->flags = flag;
1221 cpu_dev = kfd_topology_device_by_proximity_domain(
1222 link->node_to);
1223 if (cpu_dev) {
1224 list_for_each_entry(cpu_link,
1225 &cpu_dev->io_link_props, list)
1226 if (cpu_link->node_to == link->node_from)
1227 cpu_link->flags = cpu_flag;
1228 }
1229 }
1230 }
1231
1232 int kfd_topology_add_device(struct kfd_dev *gpu)
1233 {
1234 uint32_t gpu_id;
1235 struct kfd_topology_device *dev;
1236 struct kfd_cu_info cu_info;
1237 int res = 0;
1238 struct list_head temp_topology_device_list;
1239 void *crat_image = NULL;
1240 size_t image_size = 0;
1241 int proximity_domain;
1242 struct amdgpu_device *adev;
1243
1244 INIT_LIST_HEAD(&temp_topology_device_list);
1245
1246 gpu_id = kfd_generate_gpu_id(gpu);
1247
1248 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1249
1250 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1251
1252 /* Check to see if this gpu device exists in the topology_device_list.
1253 * If so, assign the gpu to that device,
1254 * else create a Virtual CRAT for this gpu device and then parse that
1255 * CRAT to create a new topology device. Once created assign the gpu to
1256 * that topology device
1257 */
1258 dev = kfd_assign_gpu(gpu);
1259 if (!dev) {
1260 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1261 COMPUTE_UNIT_GPU, gpu,
1262 proximity_domain);
1263 if (res) {
1264 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1265 gpu_id);
1266 return res;
1267 }
1268 res = kfd_parse_crat_table(crat_image,
1269 &temp_topology_device_list,
1270 proximity_domain);
1271 if (res) {
1272 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1273 gpu_id);
1274 goto err;
1275 }
1276
1277 down_write(&topology_lock);
1278 kfd_topology_update_device_list(&temp_topology_device_list,
1279 &topology_device_list);
1280
1281 /* Update the SYSFS tree, since we added another topology
1282 * device
1283 */
1284 res = kfd_topology_update_sysfs();
1285 up_write(&topology_lock);
1286
1287 if (!res)
1288 sys_props.generation_count++;
1289 else
1290 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1291 gpu_id, res);
1292 dev = kfd_assign_gpu(gpu);
1293 if (WARN_ON(!dev)) {
1294 res = -ENODEV;
1295 goto err;
1296 }
1297 }
1298
1299 dev->gpu_id = gpu_id;
1300 gpu->id = gpu_id;
1301
1302 /* TODO: Move the following lines to function
1303 * kfd_add_non_crat_information
1304 */
1305
1306 /* Fill-in additional information that is not available in CRAT but
1307 * needed for the topology
1308 */
1309
1310 amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info);
1311
1312 strncpy(dev->node_props.name, gpu->device_info->asic_name,
1313 KFD_TOPOLOGY_PUBLIC_NAME_SIZE);
1314
1315 dev->node_props.simd_arrays_per_engine =
1316 cu_info.num_shader_arrays_per_engine;
1317
1318 dev->node_props.vendor_id = gpu->pdev->vendor;
1319 dev->node_props.device_id = gpu->pdev->device;
1320 dev->node_props.capability |=
1321 ((amdgpu_amdkfd_get_asic_rev_id(dev->gpu->kgd) <<
1322 HSA_CAP_ASIC_REVISION_SHIFT) &
1323 HSA_CAP_ASIC_REVISION_MASK);
1324 dev->node_props.location_id = pci_dev_id(gpu->pdev);
1325 dev->node_props.domain = pci_domain_nr(gpu->pdev->bus);
1326 dev->node_props.max_engine_clk_fcompute =
1327 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd);
1328 dev->node_props.max_engine_clk_ccompute =
1329 cpufreq_quick_get_max(0) / 1000;
1330 dev->node_props.drm_render_minor =
1331 gpu->shared_resources.drm_render_minor;
1332
1333 dev->node_props.hive_id = gpu->hive_id;
1334 dev->node_props.num_sdma_engines = gpu->device_info->num_sdma_engines;
1335 dev->node_props.num_sdma_xgmi_engines =
1336 gpu->device_info->num_xgmi_sdma_engines;
1337 dev->node_props.num_sdma_queues_per_engine =
1338 gpu->device_info->num_sdma_queues_per_engine;
1339 dev->node_props.num_gws = (dev->gpu->gws &&
1340 dev->gpu->dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) ?
1341 amdgpu_amdkfd_get_num_gws(dev->gpu->kgd) : 0;
1342 dev->node_props.num_cp_queues = get_cp_queues_num(dev->gpu->dqm);
1343 dev->node_props.unique_id = amdgpu_amdkfd_get_unique_id(dev->gpu->kgd);
1344
1345 kfd_fill_mem_clk_max_info(dev);
1346 kfd_fill_iolink_non_crat_info(dev);
1347
1348 switch (dev->gpu->device_info->asic_family) {
1349 case CHIP_KAVERI:
1350 case CHIP_HAWAII:
1351 case CHIP_TONGA:
1352 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 <<
1353 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1354 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1355 break;
1356 case CHIP_CARRIZO:
1357 case CHIP_FIJI:
1358 case CHIP_POLARIS10:
1359 case CHIP_POLARIS11:
1360 case CHIP_POLARIS12:
1361 case CHIP_VEGAM:
1362 pr_debug("Adding doorbell packet type capability\n");
1363 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 <<
1364 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1365 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1366 break;
1367 case CHIP_VEGA10:
1368 case CHIP_VEGA12:
1369 case CHIP_VEGA20:
1370 case CHIP_RAVEN:
1371 case CHIP_RENOIR:
1372 case CHIP_ARCTURUS:
1373 case CHIP_NAVI10:
1374 case CHIP_NAVI12:
1375 case CHIP_NAVI14:
1376 case CHIP_SIENNA_CICHLID:
1377 case CHIP_NAVY_FLOUNDER:
1378 case CHIP_VANGOGH:
1379 case CHIP_DIMGREY_CAVEFISH:
1380 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 <<
1381 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1382 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1383 break;
1384 default:
1385 WARN(1, "Unexpected ASIC family %u",
1386 dev->gpu->device_info->asic_family);
1387 }
1388
1389 /*
1390 * Overwrite ATS capability according to needs_iommu_device to fix
1391 * potential missing corresponding bit in CRAT of BIOS.
1392 */
1393 if (dev->gpu->use_iommu_v2)
1394 dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
1395 else
1396 dev->node_props.capability &= ~HSA_CAP_ATS_PRESENT;
1397
1398 /* Fix errors in CZ CRAT.
1399 * simd_count: Carrizo CRAT reports wrong simd_count, probably
1400 * because it doesn't consider masked out CUs
1401 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd
1402 */
1403 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) {
1404 dev->node_props.simd_count =
1405 cu_info.simd_per_cu * cu_info.cu_active_number;
1406 dev->node_props.max_waves_per_simd = 10;
1407 }
1408
1409 adev = (struct amdgpu_device *)(dev->gpu->kgd);
1410 /* kfd only concerns sram ecc on GFX and HBM ecc on UMC */
1411 dev->node_props.capability |=
1412 ((adev->ras_features & BIT(AMDGPU_RAS_BLOCK__GFX)) != 0) ?
1413 HSA_CAP_SRAM_EDCSUPPORTED : 0;
1414 dev->node_props.capability |= ((adev->ras_features & BIT(AMDGPU_RAS_BLOCK__UMC)) != 0) ?
1415 HSA_CAP_MEM_EDCSUPPORTED : 0;
1416
1417 if (adev->asic_type != CHIP_VEGA10)
1418 dev->node_props.capability |= (adev->ras_features != 0) ?
1419 HSA_CAP_RASEVENTNOTIFY : 0;
1420
1421 kfd_debug_print_topology();
1422
1423 if (!res)
1424 kfd_notify_gpu_change(gpu_id, 1);
1425 err:
1426 kfd_destroy_crat_image(crat_image);
1427 return res;
1428 }
1429
1430 int kfd_topology_remove_device(struct kfd_dev *gpu)
1431 {
1432 struct kfd_topology_device *dev, *tmp;
1433 uint32_t gpu_id;
1434 int res = -ENODEV;
1435
1436 down_write(&topology_lock);
1437
1438 list_for_each_entry_safe(dev, tmp, &topology_device_list, list)
1439 if (dev->gpu == gpu) {
1440 gpu_id = dev->gpu_id;
1441 kfd_remove_sysfs_node_entry(dev);
1442 kfd_release_topology_device(dev);
1443 sys_props.num_devices--;
1444 res = 0;
1445 if (kfd_topology_update_sysfs() < 0)
1446 kfd_topology_release_sysfs();
1447 break;
1448 }
1449
1450 up_write(&topology_lock);
1451
1452 if (!res)
1453 kfd_notify_gpu_change(gpu_id, 0);
1454
1455 return res;
1456 }
1457
1458 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD
1459 * topology. If GPU device is found @idx, then valid kfd_dev pointer is
1460 * returned through @kdev
1461 * Return - 0: On success (@kdev will be NULL for non GPU nodes)
1462 * -1: If end of list
1463 */
1464 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
1465 {
1466
1467 struct kfd_topology_device *top_dev;
1468 uint8_t device_idx = 0;
1469
1470 *kdev = NULL;
1471 down_read(&topology_lock);
1472
1473 list_for_each_entry(top_dev, &topology_device_list, list) {
1474 if (device_idx == idx) {
1475 *kdev = top_dev->gpu;
1476 up_read(&topology_lock);
1477 return 0;
1478 }
1479
1480 device_idx++;
1481 }
1482
1483 up_read(&topology_lock);
1484
1485 return -1;
1486
1487 }
1488
1489 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
1490 {
1491 int first_cpu_of_numa_node;
1492
1493 if (!cpumask || cpumask == cpu_none_mask)
1494 return -1;
1495 first_cpu_of_numa_node = cpumask_first(cpumask);
1496 if (first_cpu_of_numa_node >= nr_cpu_ids)
1497 return -1;
1498 #ifdef CONFIG_X86_64
1499 return cpu_data(first_cpu_of_numa_node).apicid;
1500 #else
1501 return first_cpu_of_numa_node;
1502 #endif
1503 }
1504
1505 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor
1506 * of the given NUMA node (numa_node_id)
1507 * Return -1 on failure
1508 */
1509 int kfd_numa_node_to_apic_id(int numa_node_id)
1510 {
1511 if (numa_node_id == -1) {
1512 pr_warn("Invalid NUMA Node. Use online CPU mask\n");
1513 return kfd_cpumask_to_apic_id(cpu_online_mask);
1514 }
1515 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id));
1516 }
1517
1518 void kfd_double_confirm_iommu_support(struct kfd_dev *gpu)
1519 {
1520 struct kfd_topology_device *dev;
1521
1522 gpu->use_iommu_v2 = false;
1523
1524 if (!gpu->device_info->needs_iommu_device)
1525 return;
1526
1527 down_read(&topology_lock);
1528
1529 /* Only use IOMMUv2 if there is an APU topology node with no GPU
1530 * assigned yet. This GPU will be assigned to it.
1531 */
1532 list_for_each_entry(dev, &topology_device_list, list)
1533 if (dev->node_props.cpu_cores_count &&
1534 dev->node_props.simd_count &&
1535 !dev->gpu)
1536 gpu->use_iommu_v2 = true;
1537
1538 up_read(&topology_lock);
1539 }
1540
1541 #if defined(CONFIG_DEBUG_FS)
1542
1543 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data)
1544 {
1545 struct kfd_topology_device *dev;
1546 unsigned int i = 0;
1547 int r = 0;
1548
1549 down_read(&topology_lock);
1550
1551 list_for_each_entry(dev, &topology_device_list, list) {
1552 if (!dev->gpu) {
1553 i++;
1554 continue;
1555 }
1556
1557 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1558 r = dqm_debugfs_hqds(m, dev->gpu->dqm);
1559 if (r)
1560 break;
1561 }
1562
1563 up_read(&topology_lock);
1564
1565 return r;
1566 }
1567
1568 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data)
1569 {
1570 struct kfd_topology_device *dev;
1571 unsigned int i = 0;
1572 int r = 0;
1573
1574 down_read(&topology_lock);
1575
1576 list_for_each_entry(dev, &topology_device_list, list) {
1577 if (!dev->gpu) {
1578 i++;
1579 continue;
1580 }
1581
1582 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1583 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets);
1584 if (r)
1585 break;
1586 }
1587
1588 up_read(&topology_lock);
1589
1590 return r;
1591 }
1592
1593 #endif
Linux with added FPC-III support