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Merge tag 'x86_core_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
[linux-2.6-block.git] / drivers / gpu / drm / amd / amdkfd / kfd_topology.c
CommitLineData
5b5c4e40
EP		 1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23#include <linux/types.h>
24#include <linux/kernel.h>
25#include <linux/pci.h>
26#include <linux/errno.h>
27#include <linux/acpi.h>
28#include <linux/hash.h>
29#include <linux/cpufreq.h>
f7c826ad 30#include <linux/log2.h>
520b8fb7
FK		 31#include <linux/dmi.h>
32#include <linux/atomic.h>
5b5c4e40
EP		 33
34#include "kfd_priv.h"
35#include "kfd_crat.h"
36#include "kfd_topology.h"
851a645e 37#include "kfd_device_queue_manager.h"
64d1c3a4 38#include "kfd_iommu.h"
5b87245f 39#include "amdgpu_amdkfd.h"
0dee45a2 40#include "amdgpu_ras.h"
5b5c4e40 41
4f449311
HK		 42/* topology_device_list - Master list of all topology devices */
43static struct list_head topology_device_list;
520b8fb7 44static struct kfd_system_properties sys_props;
5b5c4e40
EP		 45
46static DECLARE_RWSEM(topology_lock);
520b8fb7 47static atomic_t topology_crat_proximity_domain;
5b5c4e40 48
3a87177e
HK		 49struct 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
44d8cc6f 68struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id)
5b5c4e40 69{
44d8cc6f
YZ		 70 struct kfd_topology_device *top_dev = NULL;
71 struct kfd_topology_device *ret = NULL;
5b5c4e40
EP		 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) {
44d8cc6f 77 ret = top_dev;
5b5c4e40
EP		 78 break;
79 }
80
81 up_read(&topology_lock);
82
44d8cc6f
YZ		 83 return ret;
84}
85
86struct 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;
5b5c4e40
EP		 95}
96
97struct 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)
3704d56e 105 if (top_dev->gpu && top_dev->gpu->pdev == pdev) {
5b5c4e40
EP		 106 device = top_dev->gpu;
107 break;
108 }
109
110 up_read(&topology_lock);
111
112 return device;
113}
114
1dde0ea9
FK		 115struct 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
3a87177e 133/* Called with write topology_lock acquired */
5b5c4e40
EP		 134static 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;
f4757347 139 struct kfd_perf_properties *perf;
5b5c4e40 140
5b5c4e40
EP		 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
f4757347
AL		 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
5b5c4e40 171 kfree(dev);
5b5c4e40
EP		 172}
173
4f449311 174void kfd_release_topology_device_list(struct list_head *device_list)
5b5c4e40
EP		 175{
176 struct kfd_topology_device *dev;
177
4f449311
HK		 178 while (!list_empty(device_list)) {
179 dev = list_first_entry(device_list,
180 struct kfd_topology_device, list);
5b5c4e40 181 kfd_release_topology_device(dev);
4f449311 182 }
5b5c4e40
EP		 183}
184
4f449311
HK		 185static void kfd_release_live_view(void)
186{
187 kfd_release_topology_device_list(&topology_device_list);
5b5c4e40
EP		 188 memset(&sys_props, 0, sizeof(sys_props));
189}
190
4f449311
HK		 191struct kfd_topology_device *kfd_create_topology_device(
192 struct list_head *device_list)
5b5c4e40
EP		 193{
194 struct kfd_topology_device *dev;
195
196 dev = kfd_alloc_struct(dev);
4eacc26b 197 if (!dev) {
5b5c4e40 198 pr_err("No memory to allocate a topology device");
16b9201c 199 return NULL;
5b5c4e40
EP		 200 }
201
202 INIT_LIST_HEAD(&dev->mem_props);
203 INIT_LIST_HEAD(&dev->cache_props);
204 INIT_LIST_HEAD(&dev->io_link_props);
f4757347 205 INIT_LIST_HEAD(&dev->perf_props);
5b5c4e40 206
4f449311 207 list_add_tail(&dev->list, device_list);
5b5c4e40
EP		 208
209 return dev;
16b9201c 210}
5b5c4e40 211
5b5c4e40 212
83a13ef5
FK		 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)
5b5c4e40
EP		 224
225static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
226 char *buffer)
227{
83a13ef5 228 int offs = 0;
5b5c4e40
EP		 229
230 /* Making sure that the buffer is an empty string */
231 buffer[0] = 0;
232
233 if (attr == &sys_props.attr_genid) {
83a13ef5
FK		 234 sysfs_show_32bit_val(buffer, offs,
235 sys_props.generation_count);
5b5c4e40 236 } else if (attr == &sys_props.attr_props) {
83a13ef5
FK		 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);
5b5c4e40 243 } else {
83a13ef5 244 offs = -EINVAL;
5b5c4e40
EP		 245 }
246
83a13ef5 247 return offs;
5b5c4e40
EP		 248}
249
5108d768
YZ		 250static void kfd_topology_kobj_release(struct kobject *kobj)
251{
252 kfree(kobj);
253}
254
5b5c4e40
EP		 255static const struct sysfs_ops sysprops_ops = {
256 .show = sysprops_show,
257};
258
259static struct kobj_type sysprops_type = {
5108d768 260 .release = kfd_topology_kobj_release,
5b5c4e40
EP		 261 .sysfs_ops = &sysprops_ops,
262};
263
264static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
265 char *buffer)
266{
83a13ef5 267 int offs = 0;
5b5c4e40
EP		 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);
6b855f7b
HK		 274 if (iolink->gpu && kfd_devcgroup_check_permission(iolink->gpu))
275 return -EPERM;
83a13ef5
FK		 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;
5b5c4e40
EP		 293}
294
295static const struct sysfs_ops iolink_ops = {
296 .show = iolink_show,
297};
298
299static struct kobj_type iolink_type = {
5108d768 300 .release = kfd_topology_kobj_release,
5b5c4e40
EP		 301 .sysfs_ops = &iolink_ops,
302};
303
304static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
305 char *buffer)
306{
83a13ef5 307 int offs = 0;
5b5c4e40
EP		 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);
6b855f7b
HK		 314 if (mem->gpu && kfd_devcgroup_check_permission(mem->gpu))
315 return -EPERM;
83a13ef5
FK		 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;
5b5c4e40
EP		 325}
326
327static const struct sysfs_ops mem_ops = {
328 .show = mem_show,
329};
330
331static struct kobj_type mem_type = {
5108d768 332 .release = kfd_topology_kobj_release,
5b5c4e40
EP		 333 .sysfs_ops = &mem_ops,
334};
335
336static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
337 char *buffer)
338{
83a13ef5 339 int offs = 0;
bc0c75a3 340 uint32_t i, j;
5b5c4e40
EP		 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);
6b855f7b
HK		 347 if (cache->gpu && kfd_devcgroup_check_permission(cache->gpu))
348 return -EPERM;
83a13ef5 349 sysfs_show_32bit_prop(buffer, offs, "processor_id_low",
5b5c4e40 350 cache->processor_id_low);
83a13ef5
FK		 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 ");
bc0c75a3 361 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
83a13ef5 362 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++)
bc0c75a3 363 /* Check each bit */
83a13ef5
FK		 364 offs += snprintf(buffer+offs, PAGE_SIZE-offs, "%d,",
365 (cache->sibling_map[i] >> j) & 1);
366
bc0c75a3 367 /* Replace the last "," with end of line */
83a13ef5
FK		 368 buffer[offs-1] = '\n';
369 return offs;
5b5c4e40
EP		 370}
371
372static const struct sysfs_ops cache_ops = {
373 .show = kfd_cache_show,
374};
375
376static struct kobj_type cache_type = {
5108d768 377 .release = kfd_topology_kobj_release,
5b5c4e40
EP		 378 .sysfs_ops = &cache_ops,
379};
380
f4757347
AL		 381/****** Sysfs of Performance Counters ******/
382
383struct kfd_perf_attr {
384 struct kobj_attribute attr;
385 uint32_t data;
386};
387
388static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
389 char *buf)
390{
83a13ef5 391 int offs = 0;
f4757347
AL		 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
83a13ef5 399 return sysfs_show_32bit_val(buf, offs, attr->data);
f4757347
AL		 400}
401
402#define KFD_PERF_DESC(_name, _data) \
403{ \
404 .attr = __ATTR(_name, 0444, perf_show, NULL), \
405 .data = _data, \
406}
407
408static 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
5b5c4e40
EP		 415static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
416 char *buffer)
417{
83a13ef5 418 int offs = 0;
5b5c4e40 419 struct kfd_topology_device *dev;
f7c826ad 420 uint32_t log_max_watch_addr;
5b5c4e40
EP		 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);
6b855f7b
HK		 428 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu))
429 return -EPERM;
83a13ef5 430 return sysfs_show_32bit_val(buffer, offs, dev->gpu_id);
f7c826ad
AS		 431 }
432
433 if (strcmp(attr->name, "name") == 0) {
5b5c4e40
EP		 434 dev = container_of(attr, struct kfd_topology_device,
435 attr_name);
c181159a 436
6b855f7b
HK		 437 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu))
438 return -EPERM;
83a13ef5 439 return sysfs_show_str_val(buffer, offs, dev->node_props.name);
f7c826ad 440 }
5b5c4e40 441
f7c826ad
AS		 442 dev = container_of(attr, struct kfd_topology_device,
443 attr_props);
6b855f7b
HK		 444 if (dev->gpu && kfd_devcgroup_check_permission(dev->gpu))
445 return -EPERM;
83a13ef5
FK		 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",
6127896f 449 dev->gpu ? dev->node_props.simd_count : 0);
83a13ef5
FK		 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);
f7c826ad
AS		 500
501 if (dev->gpu) {
502 log_max_watch_addr =
503 __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
504
505 if (log_max_watch_addr) {
506 dev->node_props.capability |=
507 HSA_CAP_WATCH_POINTS_SUPPORTED;
508
509 dev->node_props.capability |=
510 ((log_max_watch_addr <<
511 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
512 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
5b5c4e40
EP		 513 }
514
413e85d5
BG		 515 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
516 dev->node_props.capability |=
517 HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
518
83a13ef5 519 sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_fcompute",
3a87177e 520 dev->node_props.max_engine_clk_fcompute);
42e08c78 521
83a13ef5 522 sysfs_show_64bit_prop(buffer, offs, "local_mem_size", 0ULL);
f7c826ad 523
83a13ef5
FK		 524 sysfs_show_32bit_prop(buffer, offs, "fw_version",
525 dev->gpu->mec_fw_version);
526 sysfs_show_32bit_prop(buffer, offs, "capability",
527 dev->node_props.capability);
528 sysfs_show_32bit_prop(buffer, offs, "sdma_fw_version",
529 dev->gpu->sdma_fw_version);
11964258
KR		 530 sysfs_show_64bit_prop(buffer, offs, "unique_id",
531 amdgpu_amdkfd_get_unique_id(dev->gpu->kgd));
532
5b5c4e40
EP		 533 }
534
83a13ef5
FK		 535 return sysfs_show_32bit_prop(buffer, offs, "max_engine_clk_ccompute",
536 cpufreq_quick_get_max(0)/1000);
5b5c4e40
EP		 537}
538
539static const struct sysfs_ops node_ops = {
540 .show = node_show,
541};
542
543static struct kobj_type node_type = {
5108d768 544 .release = kfd_topology_kobj_release,
5b5c4e40
EP		 545 .sysfs_ops = &node_ops,
546};
547
548static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
549{
550 sysfs_remove_file(kobj, attr);
551 kobject_del(kobj);
552 kobject_put(kobj);
553}
554
555static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
556{
557 struct kfd_iolink_properties *iolink;
558 struct kfd_cache_properties *cache;
559 struct kfd_mem_properties *mem;
f4757347 560 struct kfd_perf_properties *perf;
5b5c4e40 561
5b5c4e40
EP		 562 if (dev->kobj_iolink) {
563 list_for_each_entry(iolink, &dev->io_link_props, list)
564 if (iolink->kobj) {
565 kfd_remove_sysfs_file(iolink->kobj,
566 &iolink->attr);
16b9201c 567 iolink->kobj = NULL;
5b5c4e40
EP		 568 }
569 kobject_del(dev->kobj_iolink);
570 kobject_put(dev->kobj_iolink);
16b9201c 571 dev->kobj_iolink = NULL;
5b5c4e40
EP		 572 }
573
574 if (dev->kobj_cache) {
575 list_for_each_entry(cache, &dev->cache_props, list)
576 if (cache->kobj) {
577 kfd_remove_sysfs_file(cache->kobj,
578 &cache->attr);
16b9201c 579 cache->kobj = NULL;
5b5c4e40
EP		 580 }
581 kobject_del(dev->kobj_cache);
582 kobject_put(dev->kobj_cache);
16b9201c 583 dev->kobj_cache = NULL;
5b5c4e40
EP		 584 }
585
586 if (dev->kobj_mem) {
587 list_for_each_entry(mem, &dev->mem_props, list)
588 if (mem->kobj) {
589 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
16b9201c 590 mem->kobj = NULL;
5b5c4e40
EP		 591 }
592 kobject_del(dev->kobj_mem);
593 kobject_put(dev->kobj_mem);
16b9201c 594 dev->kobj_mem = NULL;
5b5c4e40
EP		 595 }
596
f4757347
AL		 597 if (dev->kobj_perf) {
598 list_for_each_entry(perf, &dev->perf_props, list) {
599 kfree(perf->attr_group);
600 perf->attr_group = NULL;
601 }
602 kobject_del(dev->kobj_perf);
603 kobject_put(dev->kobj_perf);
604 dev->kobj_perf = NULL;
605 }
606
5b5c4e40
EP		 607 if (dev->kobj_node) {
608 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
609 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
610 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
611 kobject_del(dev->kobj_node);
612 kobject_put(dev->kobj_node);
16b9201c 613 dev->kobj_node = NULL;
5b5c4e40
EP		 614 }
615}
616
617static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
618 uint32_t id)
619{
620 struct kfd_iolink_properties *iolink;
621 struct kfd_cache_properties *cache;
622 struct kfd_mem_properties *mem;
f4757347 623 struct kfd_perf_properties *perf;
5b5c4e40 624 int ret;
f4757347
AL		 625 uint32_t i, num_attrs;
626 struct attribute **attrs;
5b5c4e40 627
32fa8219
FK		 628 if (WARN_ON(dev->kobj_node))
629 return -EEXIST;
630
5b5c4e40
EP		 631 /*
632 * Creating the sysfs folders
633 */
5b5c4e40
EP		 634 dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
635 if (!dev->kobj_node)
636 return -ENOMEM;
637
638 ret = kobject_init_and_add(dev->kobj_node, &node_type,
639 sys_props.kobj_nodes, "%d", id);
20eca012
QW		 640 if (ret < 0) {
641 kobject_put(dev->kobj_node);
5b5c4e40 642 return ret;
20eca012 643 }
5b5c4e40
EP		 644
645 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
646 if (!dev->kobj_mem)
647 return -ENOMEM;
648
649 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
650 if (!dev->kobj_cache)
651 return -ENOMEM;
652
653 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
654 if (!dev->kobj_iolink)
655 return -ENOMEM;
656
f4757347
AL		 657 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
658 if (!dev->kobj_perf)
659 return -ENOMEM;
660
5b5c4e40
EP		 661 /*
662 * Creating sysfs files for node properties
663 */
664 dev->attr_gpuid.name = "gpu_id";
665 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
666 sysfs_attr_init(&dev->attr_gpuid);
667 dev->attr_name.name = "name";
668 dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
669 sysfs_attr_init(&dev->attr_name);
670 dev->attr_props.name = "properties";
671 dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
672 sysfs_attr_init(&dev->attr_props);
673 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
674 if (ret < 0)
675 return ret;
676 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
677 if (ret < 0)
678 return ret;
679 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
680 if (ret < 0)
681 return ret;
682
683 i = 0;
684 list_for_each_entry(mem, &dev->mem_props, list) {
685 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
686 if (!mem->kobj)
687 return -ENOMEM;
688 ret = kobject_init_and_add(mem->kobj, &mem_type,
689 dev->kobj_mem, "%d", i);
20eca012
QW		 690 if (ret < 0) {
691 kobject_put(mem->kobj);
5b5c4e40 692 return ret;
20eca012 693 }
5b5c4e40
EP		 694
695 mem->attr.name = "properties";
696 mem->attr.mode = KFD_SYSFS_FILE_MODE;
697 sysfs_attr_init(&mem->attr);
698 ret = sysfs_create_file(mem->kobj, &mem->attr);
699 if (ret < 0)
700 return ret;
701 i++;
702 }
703
704 i = 0;
705 list_for_each_entry(cache, &dev->cache_props, list) {
706 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
707 if (!cache->kobj)
708 return -ENOMEM;
709 ret = kobject_init_and_add(cache->kobj, &cache_type,
710 dev->kobj_cache, "%d", i);
20eca012
QW		 711 if (ret < 0) {
712 kobject_put(cache->kobj);
5b5c4e40 713 return ret;
20eca012 714 }
5b5c4e40
EP		 715
716 cache->attr.name = "properties";
717 cache->attr.mode = KFD_SYSFS_FILE_MODE;
718 sysfs_attr_init(&cache->attr);
719 ret = sysfs_create_file(cache->kobj, &cache->attr);
720 if (ret < 0)
721 return ret;
722 i++;
723 }
724
725 i = 0;
726 list_for_each_entry(iolink, &dev->io_link_props, list) {
727 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
728 if (!iolink->kobj)
729 return -ENOMEM;
730 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
731 dev->kobj_iolink, "%d", i);
20eca012
QW		 732 if (ret < 0) {
733 kobject_put(iolink->kobj);
5b5c4e40 734 return ret;
20eca012 735 }
5b5c4e40
EP		 736
737 iolink->attr.name = "properties";
738 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
739 sysfs_attr_init(&iolink->attr);
740 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
741 if (ret < 0)
742 return ret;
743 i++;
f4757347
AL		 744 }
745
746 /* All hardware blocks have the same number of attributes. */
3f866f5f 747 num_attrs = ARRAY_SIZE(perf_attr_iommu);
f4757347
AL		 748 list_for_each_entry(perf, &dev->perf_props, list) {
749 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
750 * num_attrs + sizeof(struct attribute_group),
751 GFP_KERNEL);
752 if (!perf->attr_group)
753 return -ENOMEM;
754
755 attrs = (struct attribute **)(perf->attr_group + 1);
756 if (!strcmp(perf->block_name, "iommu")) {
757 /* Information of IOMMU's num_counters and counter_ids is shown
758 * under /sys/bus/event_source/devices/amd_iommu. We don't
759 * duplicate here.
760 */
761 perf_attr_iommu[0].data = perf->max_concurrent;
762 for (i = 0; i < num_attrs; i++)
763 attrs[i] = &perf_attr_iommu[i].attr.attr;
764 }
765 perf->attr_group->name = perf->block_name;
766 perf->attr_group->attrs = attrs;
767 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
768 if (ret < 0)
769 return ret;
770 }
5b5c4e40
EP		 771
772 return 0;
773}
774
3a87177e 775/* Called with write topology lock acquired */
5b5c4e40
EP		 776static int kfd_build_sysfs_node_tree(void)
777{
778 struct kfd_topology_device *dev;
779 int ret;
780 uint32_t i = 0;
781
782 list_for_each_entry(dev, &topology_device_list, list) {
8dfead6c 783 ret = kfd_build_sysfs_node_entry(dev, i);
5b5c4e40
EP		 784 if (ret < 0)
785 return ret;
786 i++;
787 }
788
789 return 0;
790}
791
3a87177e 792/* Called with write topology lock acquired */
5b5c4e40
EP		 793static void kfd_remove_sysfs_node_tree(void)
794{
795 struct kfd_topology_device *dev;
796
797 list_for_each_entry(dev, &topology_device_list, list)
798 kfd_remove_sysfs_node_entry(dev);
799}
800
801static int kfd_topology_update_sysfs(void)
802{
803 int ret;
804
4eacc26b 805 if (!sys_props.kobj_topology) {
5b5c4e40
EP		 806 sys_props.kobj_topology =
807 kfd_alloc_struct(sys_props.kobj_topology);
808 if (!sys_props.kobj_topology)
809 return -ENOMEM;
810
811 ret = kobject_init_and_add(sys_props.kobj_topology,
812 &sysprops_type, &kfd_device->kobj,
813 "topology");
20eca012
QW		 814 if (ret < 0) {
815 kobject_put(sys_props.kobj_topology);
5b5c4e40 816 return ret;
20eca012 817 }
5b5c4e40
EP		 818
819 sys_props.kobj_nodes = kobject_create_and_add("nodes",
820 sys_props.kobj_topology);
821 if (!sys_props.kobj_nodes)
822 return -ENOMEM;
823
824 sys_props.attr_genid.name = "generation_id";
825 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
826 sysfs_attr_init(&sys_props.attr_genid);
827 ret = sysfs_create_file(sys_props.kobj_topology,
828 &sys_props.attr_genid);
829 if (ret < 0)
830 return ret;
831
832 sys_props.attr_props.name = "system_properties";
833 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
834 sysfs_attr_init(&sys_props.attr_props);
835 ret = sysfs_create_file(sys_props.kobj_topology,
836 &sys_props.attr_props);
837 if (ret < 0)
838 return ret;
839 }
840
841 kfd_remove_sysfs_node_tree();
842
843 return kfd_build_sysfs_node_tree();
844}
845
846static void kfd_topology_release_sysfs(void)
847{
848 kfd_remove_sysfs_node_tree();
849 if (sys_props.kobj_topology) {
850 sysfs_remove_file(sys_props.kobj_topology,
851 &sys_props.attr_genid);
852 sysfs_remove_file(sys_props.kobj_topology,
853 &sys_props.attr_props);
854 if (sys_props.kobj_nodes) {
855 kobject_del(sys_props.kobj_nodes);
856 kobject_put(sys_props.kobj_nodes);
16b9201c 857 sys_props.kobj_nodes = NULL;
5b5c4e40
EP		 858 }
859 kobject_del(sys_props.kobj_topology);
860 kobject_put(sys_props.kobj_topology);
16b9201c 861 sys_props.kobj_topology = NULL;
5b5c4e40
EP		 862 }
863}
864
4f449311
HK		 865/* Called with write topology_lock acquired */
866static void kfd_topology_update_device_list(struct list_head *temp_list,
867 struct list_head *master_list)
868{
869 while (!list_empty(temp_list)) {
870 list_move_tail(temp_list->next, master_list);
871 sys_props.num_devices++;
872 }
873}
874
520b8fb7
FK		 875static void kfd_debug_print_topology(void)
876{
877 struct kfd_topology_device *dev;
878
879 down_read(&topology_lock);
880
881 dev = list_last_entry(&topology_device_list,
882 struct kfd_topology_device, list);
883 if (dev) {
884 if (dev->node_props.cpu_cores_count &&
885 dev->node_props.simd_count) {
886 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
887 dev->node_props.device_id,
888 dev->node_props.vendor_id);
889 } else if (dev->node_props.cpu_cores_count)
890 pr_info("Topology: Add CPU node\n");
891 else if (dev->node_props.simd_count)
892 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
893 dev->node_props.device_id,
894 dev->node_props.vendor_id);
895 }
896 up_read(&topology_lock);
897}
898
899/* Helper function for intializing platform_xx members of
900 * kfd_system_properties. Uses OEM info from the last CPU/APU node.
901 */
902static void kfd_update_system_properties(void)
903{
904 struct kfd_topology_device *dev;
905
906 down_read(&topology_lock);
907 dev = list_last_entry(&topology_device_list,
908 struct kfd_topology_device, list);
909 if (dev) {
910 sys_props.platform_id =
911 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
912 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
913 sys_props.platform_rev = dev->oem_revision;
914 }
915 up_read(&topology_lock);
916}
917
918static void find_system_memory(const struct dmi_header *dm,
919 void *private)
920{
921 struct kfd_mem_properties *mem;
922 u16 mem_width, mem_clock;
923 struct kfd_topology_device *kdev =
924 (struct kfd_topology_device *)private;
925 const u8 *dmi_data = (const u8 *)(dm + 1);
926
927 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
928 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
929 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
930 list_for_each_entry(mem, &kdev->mem_props, list) {
931 if (mem_width != 0xFFFF && mem_width != 0)
932 mem->width = mem_width;
933 if (mem_clock != 0)
934 mem->mem_clk_max = mem_clock;
935 }
936 }
937}
f4757347
AL		 938
939/*
940 * Performance counters information is not part of CRAT but we would like to
941 * put them in the sysfs under topology directory for Thunk to get the data.
942 * This function is called before updating the sysfs.
943 */
944static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
945{
64d1c3a4
FK		 946 /* These are the only counters supported so far */
947 return kfd_iommu_add_perf_counters(kdev);
f4757347
AL		 948}
949
520b8fb7
FK		 950/* kfd_add_non_crat_information - Add information that is not currently
951 * defined in CRAT but is necessary for KFD topology
952 * @dev - topology device to which addition info is added
953 */
954static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
955{
956 /* Check if CPU only node. */
957 if (!kdev->gpu) {
958 /* Add system memory information */
959 dmi_walk(find_system_memory, kdev);
960 }
961 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
962}
963
b441093e
HK		 964/* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
965 * Ignore CRAT for all other devices. AMD APU is identified if both CPU
966 * and GPU cores are present.
967 * @device_list - topology device list created by parsing ACPI CRAT table.
968 * @return - TRUE if invalid, FALSE is valid.
969 */
970static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
971{
972 struct kfd_topology_device *dev;
973
974 list_for_each_entry(dev, device_list, list) {
975 if (dev->node_props.cpu_cores_count &&
976 dev->node_props.simd_count)
977 return false;
978 }
979 pr_info("Ignoring ACPI CRAT on non-APU system\n");
980 return true;
981}
982
5b5c4e40
EP		 983int kfd_topology_init(void)
984{
16b9201c 985 void *crat_image = NULL;
5b5c4e40
EP		 986 size_t image_size = 0;
987 int ret;
4f449311 988 struct list_head temp_topology_device_list;
520b8fb7
FK		 989 int cpu_only_node = 0;
990 struct kfd_topology_device *kdev;
991 int proximity_domain;
5b5c4e40 992
4f449311
HK		 993 /* topology_device_list - Master list of all topology devices
994 * temp_topology_device_list - temporary list created while parsing CRAT
995 * or VCRAT. Once parsing is complete the contents of list is moved to
996 * topology_device_list
5b5c4e40 997 */
4f449311
HK		 998
999 /* Initialize the head for the both the lists */
5b5c4e40 1000 INIT_LIST_HEAD(&topology_device_list);
4f449311 1001 INIT_LIST_HEAD(&temp_topology_device_list);
5b5c4e40 1002 init_rwsem(&topology_lock);
5b5c4e40
EP		 1003
1004 memset(&sys_props, 0, sizeof(sys_props));
1005
520b8fb7
FK		 1006 /* Proximity domains in ACPI CRAT tables start counting at
1007 * 0. The same should be true for virtual CRAT tables created
1008 * at this stage. GPUs added later in kfd_topology_add_device
1009 * use a counter.
1010 */
1011 proximity_domain = 0;
1012
5b5c4e40 1013 /*
520b8fb7 1014 * Get the CRAT image from the ACPI. If ACPI doesn't have one
b441093e 1015 * or if ACPI CRAT is invalid create a virtual CRAT.
520b8fb7
FK		 1016 * NOTE: The current implementation expects all AMD APUs to have
1017 * CRAT. If no CRAT is available, it is assumed to be a CPU
5b5c4e40 1018 */
8e05247d
HK		 1019 ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
1020 if (!ret) {
4f449311 1021 ret = kfd_parse_crat_table(crat_image,
520b8fb7
FK		 1022 &temp_topology_device_list,
1023 proximity_domain);
b441093e
HK		 1024 if (ret ||
1025 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
520b8fb7
FK		 1026 kfd_release_topology_device_list(
1027 &temp_topology_device_list);
1028 kfd_destroy_crat_image(crat_image);
1029 crat_image = NULL;
1030 }
1031 }
1032
1033 if (!crat_image) {
1034 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
1035 COMPUTE_UNIT_CPU, NULL,
1036 proximity_domain);
1037 cpu_only_node = 1;
1038 if (ret) {
1039 pr_err("Error creating VCRAT table for CPU\n");
1040 return ret;
1041 }
1042
1043 ret = kfd_parse_crat_table(crat_image,
1044 &temp_topology_device_list,
1045 proximity_domain);
1046 if (ret) {
1047 pr_err("Error parsing VCRAT table for CPU\n");
5b5c4e40 1048 goto err;
520b8fb7 1049 }
5b5c4e40
EP		 1050 }
1051
f4757347
AL		 1052 kdev = list_first_entry(&temp_topology_device_list,
1053 struct kfd_topology_device, list);
1054 kfd_add_perf_to_topology(kdev);
1055
8e05247d 1056 down_write(&topology_lock);
4f449311
HK		 1057 kfd_topology_update_device_list(&temp_topology_device_list,
1058 &topology_device_list);
520b8fb7 1059 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
8e05247d
HK		 1060 ret = kfd_topology_update_sysfs();
1061 up_write(&topology_lock);
1062
4f449311
HK		 1063 if (!ret) {
1064 sys_props.generation_count++;
520b8fb7
FK		 1065 kfd_update_system_properties();
1066 kfd_debug_print_topology();
4f449311 1067 } else
8e05247d
HK		 1068 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1069
520b8fb7
FK		 1070 /* For nodes with GPU, this information gets added
1071 * when GPU is detected (kfd_topology_add_device).
1072 */
1073 if (cpu_only_node) {
1074 /* Add additional information to CPU only node created above */
1075 down_write(&topology_lock);
1076 kdev = list_first_entry(&topology_device_list,
1077 struct kfd_topology_device, list);
1078 up_write(&topology_lock);
1079 kfd_add_non_crat_information(kdev);
1080 }
1081
5b5c4e40 1082err:
8e05247d 1083 kfd_destroy_crat_image(crat_image);
5b5c4e40
EP		 1084 return ret;
1085}
1086
1087void kfd_topology_shutdown(void)
1088{
4f449311 1089 down_write(&topology_lock);
5b5c4e40
EP		 1090 kfd_topology_release_sysfs();
1091 kfd_release_live_view();
4f449311 1092 up_write(&topology_lock);
5b5c4e40
EP		 1093}
1094
5b5c4e40
EP		 1095static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1096{
1097 uint32_t hashout;
1098 uint32_t buf[7];
585f0e6c 1099 uint64_t local_mem_size;
5b5c4e40 1100 int i;
0504cccf 1101 struct kfd_local_mem_info local_mem_info;
5b5c4e40
EP		 1102
1103 if (!gpu)
1104 return 0;
1105
7cd52c91 1106 amdgpu_amdkfd_get_local_mem_info(gpu->kgd, &local_mem_info);
0504cccf
HK		 1107
1108 local_mem_size = local_mem_info.local_mem_size_private +
1109 local_mem_info.local_mem_size_public;
585f0e6c 1110
5b5c4e40 1111 buf[0] = gpu->pdev->devfn;
46096058
AL		 1112 buf[1] = gpu->pdev->subsystem_vendor |
1113 (gpu->pdev->subsystem_device << 16);
1114 buf[2] = pci_domain_nr(gpu->pdev->bus);
5b5c4e40
EP		 1115 buf[3] = gpu->pdev->device;
1116 buf[4] = gpu->pdev->bus->number;
585f0e6c
EC		 1117 buf[5] = lower_32_bits(local_mem_size);
1118 buf[6] = upper_32_bits(local_mem_size);
5b5c4e40
EP		 1119
1120 for (i = 0, hashout = 0; i < 7; i++)
1121 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1122
1123 return hashout;
1124}
3a87177e
HK		 1125/* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1126 * the GPU device is not already present in the topology device
1127 * list then return NULL. This means a new topology device has to
1128 * be created for this GPU.
3a87177e 1129 */
5b5c4e40
EP		 1130static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1131{
1132 struct kfd_topology_device *dev;
16b9201c 1133 struct kfd_topology_device *out_dev = NULL;
171bc67e
HK		 1134 struct kfd_mem_properties *mem;
1135 struct kfd_cache_properties *cache;
1136 struct kfd_iolink_properties *iolink;
5b5c4e40 1137
3a87177e 1138 down_write(&topology_lock);
b8fe0524
FK		 1139 list_for_each_entry(dev, &topology_device_list, list) {
1140 /* Discrete GPUs need their own topology device list
1141 * entries. Don't assign them to CPU/APU nodes.
1142 */
6127896f 1143 if (!gpu->use_iommu_v2 &&
b8fe0524
FK		 1144 dev->node_props.cpu_cores_count)
1145 continue;
1146
4eacc26b 1147 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
5b5c4e40
EP		 1148 dev->gpu = gpu;
1149 out_dev = dev;
171bc67e
HK		 1150
1151 list_for_each_entry(mem, &dev->mem_props, list)
1152 mem->gpu = dev->gpu;
1153 list_for_each_entry(cache, &dev->cache_props, list)
1154 cache->gpu = dev->gpu;
1155 list_for_each_entry(iolink, &dev->io_link_props, list)
1156 iolink->gpu = dev->gpu;
5b5c4e40
EP		 1157 break;
1158 }
b8fe0524 1159 }
3a87177e 1160 up_write(&topology_lock);
5b5c4e40
EP		 1161 return out_dev;
1162}
1163
1164static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1165{
1166 /*
1167 * TODO: Generate an event for thunk about the arrival/removal
1168 * of the GPU
1169 */
1170}
1171
3a87177e
HK		 1172/* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1173 * patch this after CRAT parsing.
1174 */
1175static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1176{
1177 struct kfd_mem_properties *mem;
1178 struct kfd_local_mem_info local_mem_info;
1179
1180 if (!dev)
1181 return;
1182
1183 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1184 * single bank of VRAM local memory.
1185 * for dGPUs - VCRAT reports only one bank of Local Memory
1186 * for APUs - If CRAT from ACPI reports more than one bank, then
1187 * all the banks will report the same mem_clk_max information
1188 */
7cd52c91 1189 amdgpu_amdkfd_get_local_mem_info(dev->gpu->kgd, &local_mem_info);
3a87177e
HK		 1190
1191 list_for_each_entry(mem, &dev->mem_props, list)
1192 mem->mem_clk_max = local_mem_info.mem_clk_max;
1193}
1194
1195static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1196{
d35f00d8
EH		 1197 struct kfd_iolink_properties *link, *cpu_link;
1198 struct kfd_topology_device *cpu_dev;
1199 uint32_t cap;
1200 uint32_t cpu_flag = CRAT_IOLINK_FLAGS_ENABLED;
1201 uint32_t flag = CRAT_IOLINK_FLAGS_ENABLED;
3a87177e
HK		 1202
1203 if (!dev || !dev->gpu)
1204 return;
1205
d35f00d8
EH		 1206 pcie_capability_read_dword(dev->gpu->pdev,
1207 PCI_EXP_DEVCAP2, &cap);
1208
1209 if (!(cap & (PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
1210 PCI_EXP_DEVCAP2_ATOMIC_COMP64)))
1211 cpu_flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1212 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1213
1214 if (!dev->gpu->pci_atomic_requested ||
1215 dev->gpu->device_info->asic_family == CHIP_HAWAII)
1216 flag |= CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1217 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1218
1219 /* GPU only creates direct links so apply flags setting to all */
1220 list_for_each_entry(link, &dev->io_link_props, list) {
1221 link->flags = flag;
1222 cpu_dev = kfd_topology_device_by_proximity_domain(
1223 link->node_to);
1224 if (cpu_dev) {
1225 list_for_each_entry(cpu_link,
1226 &cpu_dev->io_link_props, list)
1227 if (cpu_link->node_to == link->node_from)
1228 cpu_link->flags = cpu_flag;
1229 }
1230 }
3a87177e
HK		 1231}
1232
5b5c4e40
EP		 1233int kfd_topology_add_device(struct kfd_dev *gpu)
1234{
1235 uint32_t gpu_id;
1236 struct kfd_topology_device *dev;
f7ce2fad 1237 struct kfd_cu_info cu_info;
4f449311
HK		 1238 int res = 0;
1239 struct list_head temp_topology_device_list;
3a87177e
HK		 1240 void *crat_image = NULL;
1241 size_t image_size = 0;
1242 int proximity_domain;
5436ab94 1243 struct amdgpu_device *adev;
4f449311
HK		 1244
1245 INIT_LIST_HEAD(&temp_topology_device_list);
5b5c4e40 1246
5b5c4e40
EP		 1247 gpu_id = kfd_generate_gpu_id(gpu);
1248
79775b62 1249 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
5b5c4e40 1250
3a87177e
HK		 1251 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1252
1253 /* Check to see if this gpu device exists in the topology_device_list.
1254 * If so, assign the gpu to that device,
1255 * else create a Virtual CRAT for this gpu device and then parse that
1256 * CRAT to create a new topology device. Once created assign the gpu to
1257 * that topology device
5b5c4e40
EP		 1258 */
1259 dev = kfd_assign_gpu(gpu);
1260 if (!dev) {
3a87177e
HK		 1261 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1262 COMPUTE_UNIT_GPU, gpu,
1263 proximity_domain);
1264 if (res) {
1265 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1266 gpu_id);
1267 return res;
1268 }
1269 res = kfd_parse_crat_table(crat_image,
1270 &temp_topology_device_list,
1271 proximity_domain);
1272 if (res) {
1273 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1274 gpu_id);
5b5c4e40
EP		 1275 goto err;
1276 }
4f449311 1277
4f449311
HK		 1278 down_write(&topology_lock);
1279 kfd_topology_update_device_list(&temp_topology_device_list,
1280 &topology_device_list);
1281
8eabaf54
KR		 1282 /* Update the SYSFS tree, since we added another topology
1283 * device
5b5c4e40 1284 */
3a87177e 1285 res = kfd_topology_update_sysfs();
4f449311
HK		 1286 up_write(&topology_lock);
1287
3a87177e
HK		 1288 if (!res)
1289 sys_props.generation_count++;
1290 else
1291 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1292 gpu_id, res);
1293 dev = kfd_assign_gpu(gpu);
1294 if (WARN_ON(!dev)) {
1295 res = -ENODEV;
1296 goto err;
1297 }
5b5c4e40
EP		 1298 }
1299
1300 dev->gpu_id = gpu_id;
1301 gpu->id = gpu_id;
3a87177e
HK		 1302
1303 /* TODO: Move the following lines to function
1304 * kfd_add_non_crat_information
1305 */
1306
1307 /* Fill-in additional information that is not available in CRAT but
1308 * needed for the topology
1309 */
1310
7cd52c91 1311 amdgpu_amdkfd_get_cu_info(dev->gpu->kgd, &cu_info);
c181159a
YZ		 1312
1313 strncpy(dev->node_props.name, gpu->device_info->asic_name,
1314 KFD_TOPOLOGY_PUBLIC_NAME_SIZE);
1315
3a87177e
HK		 1316 dev->node_props.simd_arrays_per_engine =
1317 cu_info.num_shader_arrays_per_engine;
1318
5b5c4e40
EP		 1319 dev->node_props.vendor_id = gpu->pdev->vendor;
1320 dev->node_props.device_id = gpu->pdev->device;
c6d1ec41
JG		 1321 dev->node_props.capability |=
1322 ((amdgpu_amdkfd_get_asic_rev_id(dev->gpu->kgd) <<
1323 HSA_CAP_ASIC_REVISION_SHIFT) &
1324 HSA_CAP_ASIC_REVISION_MASK);
babe2ef3 1325 dev->node_props.location_id = pci_dev_id(gpu->pdev);
3e58e95a 1326 dev->node_props.domain = pci_domain_nr(gpu->pdev->bus);
3a87177e 1327 dev->node_props.max_engine_clk_fcompute =
7cd52c91 1328 amdgpu_amdkfd_get_max_engine_clock_in_mhz(dev->gpu->kgd);
3a87177e
HK		 1329 dev->node_props.max_engine_clk_ccompute =
1330 cpufreq_quick_get_max(0) / 1000;
7c9b7171
OZ		 1331 dev->node_props.drm_render_minor =
1332 gpu->shared_resources.drm_render_minor;
3a87177e 1333
0c1690e3 1334 dev->node_props.hive_id = gpu->hive_id;
14568cf6
OZ		 1335 dev->node_props.num_sdma_engines = gpu->device_info->num_sdma_engines;
1336 dev->node_props.num_sdma_xgmi_engines =
1337 gpu->device_info->num_xgmi_sdma_engines;
bb71c74d
HR		 1338 dev->node_props.num_sdma_queues_per_engine =
1339 gpu->device_info->num_sdma_queues_per_engine;
29633d0e 1340 dev->node_props.num_gws = (dev->gpu->gws &&
29e76462
OZ		 1341 dev->gpu->dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) ?
1342 amdgpu_amdkfd_get_num_gws(dev->gpu->kgd) : 0;
e6945304 1343 dev->node_props.num_cp_queues = get_cp_queues_num(dev->gpu->dqm);
0c1690e3 1344
3a87177e
HK		 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:
846a44d7 1360 case CHIP_POLARIS12:
ed81cd6e 1361 case CHIP_VEGAM:
42aa8793 1362 pr_debug("Adding doorbell packet type capability\n");
3a87177e
HK		 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;
389056e5 1367 case CHIP_VEGA10:
846a44d7 1368 case CHIP_VEGA12:
22a3a294 1369 case CHIP_VEGA20:
389056e5 1370 case CHIP_RAVEN:
f5d843d4 1371 case CHIP_RENOIR:
49adcf8a 1372 case CHIP_ARCTURUS:
14328aa5 1373 case CHIP_NAVI10:
0e94b564 1374 case CHIP_NAVI12:
8099ae40 1375 case CHIP_NAVI14:
3a2f0c81 1376 case CHIP_SIENNA_CICHLID:
de89b2e4 1377 case CHIP_NAVY_FLOUNDER:
3a5e715d 1378 case CHIP_VANGOGH:
eb5a34d4 1379 case CHIP_DIMGREY_CAVEFISH:
389056e5
FK		 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;
3a87177e
HK		 1384 default:
1385 WARN(1, "Unexpected ASIC family %u",
1386 dev->gpu->device_info->asic_family);
7639a8c4
BG		 1387 }
1388
1ae99eab
OZ		 1389 /*
1390 * Overwrite ATS capability according to needs_iommu_device to fix
1391 * potential missing corresponding bit in CRAT of BIOS.
1392 */
6127896f 1393 if (dev->gpu->use_iommu_v2)
1ae99eab
OZ		 1394 dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
1395 else
1396 dev->node_props.capability &= ~HSA_CAP_ATS_PRESENT;
1397
3a87177e
HK		 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
70f372bf 1401 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd
3a87177e 1402 */
70f372bf 1403 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) {
3a87177e
HK		 1404 dev->node_props.simd_count =
1405 cu_info.simd_per_cu * cu_info.cu_active_number;
70f372bf 1406 dev->node_props.max_waves_per_simd = 10;
70f372bf 1407 }
3a87177e 1408
5436ab94
SY		 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) ?
0dee45a2 1419 HSA_CAP_RASEVENTNOTIFY : 0;
0dee45a2 1420
3a87177e
HK		 1421 kfd_debug_print_topology();
1422
4f449311 1423 if (!res)
5b5c4e40 1424 kfd_notify_gpu_change(gpu_id, 1);
4f449311 1425err:
3a87177e 1426 kfd_destroy_crat_image(crat_image);
5b5c4e40
EP		 1427 return res;
1428}
1429
1430int kfd_topology_remove_device(struct kfd_dev *gpu)
1431{
4f449311 1432 struct kfd_topology_device *dev, *tmp;
5b5c4e40
EP		 1433 uint32_t gpu_id;
1434 int res = -ENODEV;
1435
5b5c4e40
EP		 1436 down_write(&topology_lock);
1437
4f449311 1438 list_for_each_entry_safe(dev, tmp, &topology_device_list, list)
5b5c4e40
EP		 1439 if (dev->gpu == gpu) {
1440 gpu_id = dev->gpu_id;
1441 kfd_remove_sysfs_node_entry(dev);
1442 kfd_release_topology_device(dev);
4f449311 1443 sys_props.num_devices--;
5b5c4e40
EP		 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
174de876 1452 if (!res)
5b5c4e40
EP		 1453 kfd_notify_gpu_change(gpu_id, 0);
1454
1455 return res;
1456}
1457
6d82eb0e
HK		 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
5b5c4e40 1463 */
6d82eb0e 1464int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
5b5c4e40
EP		 1465{
1466
1467 struct kfd_topology_device *top_dev;
5b5c4e40
EP		 1468 uint8_t device_idx = 0;
1469
6d82eb0e 1470 *kdev = NULL;
5b5c4e40
EP		 1471 down_read(&topology_lock);
1472
1473 list_for_each_entry(top_dev, &topology_device_list, list) {
1474 if (device_idx == idx) {
6d82eb0e
HK		 1475 *kdev = top_dev->gpu;
1476 up_read(&topology_lock);
1477 return 0;
5b5c4e40
EP		 1478 }
1479
1480 device_idx++;
1481 }
1482
1483 up_read(&topology_lock);
1484
6d82eb0e 1485 return -1;
5b5c4e40
EP		 1486
1487}
851a645e 1488
520b8fb7
FK		 1489static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
1490{
520b8fb7
FK		 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;
df1dd4f4
FK		 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
520b8fb7
FK		 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 */
1509int 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
6127896f
HR		 1518void 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
851a645e
FK		 1541#if defined(CONFIG_DEBUG_FS)
1542
1543int 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
1568int 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 6.x block layer and io_uring tree(s)