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