2 * Copyright 2014 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
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>
36 #include "kfd_topology.h"
37 #include "kfd_device_queue_manager.h"
38 #include "kfd_iommu.h"
40 /* topology_device_list - Master list of all topology devices */
41 static struct list_head topology_device_list;
42 static struct kfd_system_properties sys_props;
44 static DECLARE_RWSEM(topology_lock);
45 static atomic_t topology_crat_proximity_domain;
47 struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
48 uint32_t proximity_domain)
50 struct kfd_topology_device *top_dev;
51 struct kfd_topology_device *device = NULL;
53 down_read(&topology_lock);
55 list_for_each_entry(top_dev, &topology_device_list, list)
56 if (top_dev->proximity_domain == proximity_domain) {
61 up_read(&topology_lock);
66 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id)
68 struct kfd_topology_device *top_dev = NULL;
69 struct kfd_topology_device *ret = NULL;
71 down_read(&topology_lock);
73 list_for_each_entry(top_dev, &topology_device_list, list)
74 if (top_dev->gpu_id == gpu_id) {
79 up_read(&topology_lock);
84 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id)
86 struct kfd_topology_device *top_dev;
88 top_dev = kfd_topology_device_by_id(gpu_id);
95 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
97 struct kfd_topology_device *top_dev;
98 struct kfd_dev *device = NULL;
100 down_read(&topology_lock);
102 list_for_each_entry(top_dev, &topology_device_list, list)
103 if (top_dev->gpu->pdev == pdev) {
104 device = top_dev->gpu;
108 up_read(&topology_lock);
113 /* Called with write topology_lock acquired */
114 static void kfd_release_topology_device(struct kfd_topology_device *dev)
116 struct kfd_mem_properties *mem;
117 struct kfd_cache_properties *cache;
118 struct kfd_iolink_properties *iolink;
119 struct kfd_perf_properties *perf;
121 list_del(&dev->list);
123 while (dev->mem_props.next != &dev->mem_props) {
124 mem = container_of(dev->mem_props.next,
125 struct kfd_mem_properties, list);
126 list_del(&mem->list);
130 while (dev->cache_props.next != &dev->cache_props) {
131 cache = container_of(dev->cache_props.next,
132 struct kfd_cache_properties, list);
133 list_del(&cache->list);
137 while (dev->io_link_props.next != &dev->io_link_props) {
138 iolink = container_of(dev->io_link_props.next,
139 struct kfd_iolink_properties, list);
140 list_del(&iolink->list);
144 while (dev->perf_props.next != &dev->perf_props) {
145 perf = container_of(dev->perf_props.next,
146 struct kfd_perf_properties, list);
147 list_del(&perf->list);
154 void kfd_release_topology_device_list(struct list_head *device_list)
156 struct kfd_topology_device *dev;
158 while (!list_empty(device_list)) {
159 dev = list_first_entry(device_list,
160 struct kfd_topology_device, list);
161 kfd_release_topology_device(dev);
165 static void kfd_release_live_view(void)
167 kfd_release_topology_device_list(&topology_device_list);
168 memset(&sys_props, 0, sizeof(sys_props));
171 struct kfd_topology_device *kfd_create_topology_device(
172 struct list_head *device_list)
174 struct kfd_topology_device *dev;
176 dev = kfd_alloc_struct(dev);
178 pr_err("No memory to allocate a topology device");
182 INIT_LIST_HEAD(&dev->mem_props);
183 INIT_LIST_HEAD(&dev->cache_props);
184 INIT_LIST_HEAD(&dev->io_link_props);
185 INIT_LIST_HEAD(&dev->perf_props);
187 list_add_tail(&dev->list, device_list);
193 #define sysfs_show_gen_prop(buffer, fmt, ...) \
194 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__)
195 #define sysfs_show_32bit_prop(buffer, name, value) \
196 sysfs_show_gen_prop(buffer, "%s %u\n", name, value)
197 #define sysfs_show_64bit_prop(buffer, name, value) \
198 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value)
199 #define sysfs_show_32bit_val(buffer, value) \
200 sysfs_show_gen_prop(buffer, "%u\n", value)
201 #define sysfs_show_str_val(buffer, value) \
202 sysfs_show_gen_prop(buffer, "%s\n", value)
204 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
209 /* Making sure that the buffer is an empty string */
212 if (attr == &sys_props.attr_genid) {
213 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count);
214 } else if (attr == &sys_props.attr_props) {
215 sysfs_show_64bit_prop(buffer, "platform_oem",
216 sys_props.platform_oem);
217 sysfs_show_64bit_prop(buffer, "platform_id",
218 sys_props.platform_id);
219 ret = sysfs_show_64bit_prop(buffer, "platform_rev",
220 sys_props.platform_rev);
228 static void kfd_topology_kobj_release(struct kobject *kobj)
233 static const struct sysfs_ops sysprops_ops = {
234 .show = sysprops_show,
237 static struct kobj_type sysprops_type = {
238 .release = kfd_topology_kobj_release,
239 .sysfs_ops = &sysprops_ops,
242 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
246 struct kfd_iolink_properties *iolink;
248 /* Making sure that the buffer is an empty string */
251 iolink = container_of(attr, struct kfd_iolink_properties, attr);
252 sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type);
253 sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj);
254 sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min);
255 sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from);
256 sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to);
257 sysfs_show_32bit_prop(buffer, "weight", iolink->weight);
258 sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency);
259 sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency);
260 sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth);
261 sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth);
262 sysfs_show_32bit_prop(buffer, "recommended_transfer_size",
263 iolink->rec_transfer_size);
264 ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags);
269 static const struct sysfs_ops iolink_ops = {
273 static struct kobj_type iolink_type = {
274 .release = kfd_topology_kobj_release,
275 .sysfs_ops = &iolink_ops,
278 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
282 struct kfd_mem_properties *mem;
284 /* Making sure that the buffer is an empty string */
287 mem = container_of(attr, struct kfd_mem_properties, attr);
288 sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type);
289 sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes);
290 sysfs_show_32bit_prop(buffer, "flags", mem->flags);
291 sysfs_show_32bit_prop(buffer, "width", mem->width);
292 ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max);
297 static const struct sysfs_ops mem_ops = {
301 static struct kobj_type mem_type = {
302 .release = kfd_topology_kobj_release,
303 .sysfs_ops = &mem_ops,
306 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
311 struct kfd_cache_properties *cache;
313 /* Making sure that the buffer is an empty string */
316 cache = container_of(attr, struct kfd_cache_properties, attr);
317 sysfs_show_32bit_prop(buffer, "processor_id_low",
318 cache->processor_id_low);
319 sysfs_show_32bit_prop(buffer, "level", cache->cache_level);
320 sysfs_show_32bit_prop(buffer, "size", cache->cache_size);
321 sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size);
322 sysfs_show_32bit_prop(buffer, "cache_lines_per_tag",
323 cache->cachelines_per_tag);
324 sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc);
325 sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency);
326 sysfs_show_32bit_prop(buffer, "type", cache->cache_type);
327 snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer);
328 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
329 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) {
331 if (cache->sibling_map[i] & (1 << j))
332 ret = snprintf(buffer, PAGE_SIZE,
333 "%s%d%s", buffer, 1, ",");
335 ret = snprintf(buffer, PAGE_SIZE,
336 "%s%d%s", buffer, 0, ",");
338 /* Replace the last "," with end of line */
339 *(buffer + strlen(buffer) - 1) = 0xA;
343 static const struct sysfs_ops cache_ops = {
344 .show = kfd_cache_show,
347 static struct kobj_type cache_type = {
348 .release = kfd_topology_kobj_release,
349 .sysfs_ops = &cache_ops,
352 /****** Sysfs of Performance Counters ******/
354 struct kfd_perf_attr {
355 struct kobj_attribute attr;
359 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
362 struct kfd_perf_attr *attr;
365 attr = container_of(attrs, struct kfd_perf_attr, attr);
366 if (!attr->data) /* invalid data for PMC */
369 return sysfs_show_32bit_val(buf, attr->data);
372 #define KFD_PERF_DESC(_name, _data) \
374 .attr = __ATTR(_name, 0444, perf_show, NULL), \
378 static struct kfd_perf_attr perf_attr_iommu[] = {
379 KFD_PERF_DESC(max_concurrent, 0),
380 KFD_PERF_DESC(num_counters, 0),
381 KFD_PERF_DESC(counter_ids, 0),
383 /****************************************/
385 static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
388 struct kfd_topology_device *dev;
389 char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
391 uint32_t log_max_watch_addr;
393 /* Making sure that the buffer is an empty string */
396 if (strcmp(attr->name, "gpu_id") == 0) {
397 dev = container_of(attr, struct kfd_topology_device,
399 return sysfs_show_32bit_val(buffer, dev->gpu_id);
402 if (strcmp(attr->name, "name") == 0) {
403 dev = container_of(attr, struct kfd_topology_device,
405 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) {
407 (char)dev->node_props.marketing_name[i];
408 if (dev->node_props.marketing_name[i] == 0)
411 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0;
412 return sysfs_show_str_val(buffer, public_name);
415 dev = container_of(attr, struct kfd_topology_device,
417 sysfs_show_32bit_prop(buffer, "cpu_cores_count",
418 dev->node_props.cpu_cores_count);
419 sysfs_show_32bit_prop(buffer, "simd_count",
420 dev->node_props.simd_count);
421 sysfs_show_32bit_prop(buffer, "mem_banks_count",
422 dev->node_props.mem_banks_count);
423 sysfs_show_32bit_prop(buffer, "caches_count",
424 dev->node_props.caches_count);
425 sysfs_show_32bit_prop(buffer, "io_links_count",
426 dev->node_props.io_links_count);
427 sysfs_show_32bit_prop(buffer, "cpu_core_id_base",
428 dev->node_props.cpu_core_id_base);
429 sysfs_show_32bit_prop(buffer, "simd_id_base",
430 dev->node_props.simd_id_base);
431 sysfs_show_32bit_prop(buffer, "max_waves_per_simd",
432 dev->node_props.max_waves_per_simd);
433 sysfs_show_32bit_prop(buffer, "lds_size_in_kb",
434 dev->node_props.lds_size_in_kb);
435 sysfs_show_32bit_prop(buffer, "gds_size_in_kb",
436 dev->node_props.gds_size_in_kb);
437 sysfs_show_32bit_prop(buffer, "wave_front_size",
438 dev->node_props.wave_front_size);
439 sysfs_show_32bit_prop(buffer, "array_count",
440 dev->node_props.array_count);
441 sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine",
442 dev->node_props.simd_arrays_per_engine);
443 sysfs_show_32bit_prop(buffer, "cu_per_simd_array",
444 dev->node_props.cu_per_simd_array);
445 sysfs_show_32bit_prop(buffer, "simd_per_cu",
446 dev->node_props.simd_per_cu);
447 sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu",
448 dev->node_props.max_slots_scratch_cu);
449 sysfs_show_32bit_prop(buffer, "vendor_id",
450 dev->node_props.vendor_id);
451 sysfs_show_32bit_prop(buffer, "device_id",
452 dev->node_props.device_id);
453 sysfs_show_32bit_prop(buffer, "location_id",
454 dev->node_props.location_id);
455 sysfs_show_32bit_prop(buffer, "drm_render_minor",
456 dev->node_props.drm_render_minor);
460 __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
462 if (log_max_watch_addr) {
463 dev->node_props.capability |=
464 HSA_CAP_WATCH_POINTS_SUPPORTED;
466 dev->node_props.capability |=
467 ((log_max_watch_addr <<
468 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
469 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
472 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
473 dev->node_props.capability |=
474 HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
476 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
477 dev->node_props.max_engine_clk_fcompute);
479 sysfs_show_64bit_prop(buffer, "local_mem_size",
480 (unsigned long long int) 0);
482 sysfs_show_32bit_prop(buffer, "fw_version",
483 dev->gpu->kfd2kgd->get_fw_version(
486 sysfs_show_32bit_prop(buffer, "capability",
487 dev->node_props.capability);
490 return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
491 cpufreq_quick_get_max(0)/1000);
494 static const struct sysfs_ops node_ops = {
498 static struct kobj_type node_type = {
499 .release = kfd_topology_kobj_release,
500 .sysfs_ops = &node_ops,
503 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
505 sysfs_remove_file(kobj, attr);
510 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
512 struct kfd_iolink_properties *iolink;
513 struct kfd_cache_properties *cache;
514 struct kfd_mem_properties *mem;
515 struct kfd_perf_properties *perf;
517 if (dev->kobj_iolink) {
518 list_for_each_entry(iolink, &dev->io_link_props, list)
520 kfd_remove_sysfs_file(iolink->kobj,
524 kobject_del(dev->kobj_iolink);
525 kobject_put(dev->kobj_iolink);
526 dev->kobj_iolink = NULL;
529 if (dev->kobj_cache) {
530 list_for_each_entry(cache, &dev->cache_props, list)
532 kfd_remove_sysfs_file(cache->kobj,
536 kobject_del(dev->kobj_cache);
537 kobject_put(dev->kobj_cache);
538 dev->kobj_cache = NULL;
542 list_for_each_entry(mem, &dev->mem_props, list)
544 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
547 kobject_del(dev->kobj_mem);
548 kobject_put(dev->kobj_mem);
549 dev->kobj_mem = NULL;
552 if (dev->kobj_perf) {
553 list_for_each_entry(perf, &dev->perf_props, list) {
554 kfree(perf->attr_group);
555 perf->attr_group = NULL;
557 kobject_del(dev->kobj_perf);
558 kobject_put(dev->kobj_perf);
559 dev->kobj_perf = NULL;
562 if (dev->kobj_node) {
563 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
564 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
565 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
566 kobject_del(dev->kobj_node);
567 kobject_put(dev->kobj_node);
568 dev->kobj_node = NULL;
572 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
575 struct kfd_iolink_properties *iolink;
576 struct kfd_cache_properties *cache;
577 struct kfd_mem_properties *mem;
578 struct kfd_perf_properties *perf;
580 uint32_t i, num_attrs;
581 struct attribute **attrs;
583 if (WARN_ON(dev->kobj_node))
587 * Creating the sysfs folders
589 dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
593 ret = kobject_init_and_add(dev->kobj_node, &node_type,
594 sys_props.kobj_nodes, "%d", id);
598 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
602 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
603 if (!dev->kobj_cache)
606 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
607 if (!dev->kobj_iolink)
610 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
615 * Creating sysfs files for node properties
617 dev->attr_gpuid.name = "gpu_id";
618 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
619 sysfs_attr_init(&dev->attr_gpuid);
620 dev->attr_name.name = "name";
621 dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
622 sysfs_attr_init(&dev->attr_name);
623 dev->attr_props.name = "properties";
624 dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
625 sysfs_attr_init(&dev->attr_props);
626 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
629 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
632 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
637 list_for_each_entry(mem, &dev->mem_props, list) {
638 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
641 ret = kobject_init_and_add(mem->kobj, &mem_type,
642 dev->kobj_mem, "%d", i);
646 mem->attr.name = "properties";
647 mem->attr.mode = KFD_SYSFS_FILE_MODE;
648 sysfs_attr_init(&mem->attr);
649 ret = sysfs_create_file(mem->kobj, &mem->attr);
656 list_for_each_entry(cache, &dev->cache_props, list) {
657 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
660 ret = kobject_init_and_add(cache->kobj, &cache_type,
661 dev->kobj_cache, "%d", i);
665 cache->attr.name = "properties";
666 cache->attr.mode = KFD_SYSFS_FILE_MODE;
667 sysfs_attr_init(&cache->attr);
668 ret = sysfs_create_file(cache->kobj, &cache->attr);
675 list_for_each_entry(iolink, &dev->io_link_props, list) {
676 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
679 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
680 dev->kobj_iolink, "%d", i);
684 iolink->attr.name = "properties";
685 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
686 sysfs_attr_init(&iolink->attr);
687 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
693 /* All hardware blocks have the same number of attributes. */
694 num_attrs = ARRAY_SIZE(perf_attr_iommu);
695 list_for_each_entry(perf, &dev->perf_props, list) {
696 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
697 * num_attrs + sizeof(struct attribute_group),
699 if (!perf->attr_group)
702 attrs = (struct attribute **)(perf->attr_group + 1);
703 if (!strcmp(perf->block_name, "iommu")) {
704 /* Information of IOMMU's num_counters and counter_ids is shown
705 * under /sys/bus/event_source/devices/amd_iommu. We don't
708 perf_attr_iommu[0].data = perf->max_concurrent;
709 for (i = 0; i < num_attrs; i++)
710 attrs[i] = &perf_attr_iommu[i].attr.attr;
712 perf->attr_group->name = perf->block_name;
713 perf->attr_group->attrs = attrs;
714 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
722 /* Called with write topology lock acquired */
723 static int kfd_build_sysfs_node_tree(void)
725 struct kfd_topology_device *dev;
729 list_for_each_entry(dev, &topology_device_list, list) {
730 ret = kfd_build_sysfs_node_entry(dev, i);
739 /* Called with write topology lock acquired */
740 static void kfd_remove_sysfs_node_tree(void)
742 struct kfd_topology_device *dev;
744 list_for_each_entry(dev, &topology_device_list, list)
745 kfd_remove_sysfs_node_entry(dev);
748 static int kfd_topology_update_sysfs(void)
752 pr_info("Creating topology SYSFS entries\n");
753 if (!sys_props.kobj_topology) {
754 sys_props.kobj_topology =
755 kfd_alloc_struct(sys_props.kobj_topology);
756 if (!sys_props.kobj_topology)
759 ret = kobject_init_and_add(sys_props.kobj_topology,
760 &sysprops_type, &kfd_device->kobj,
765 sys_props.kobj_nodes = kobject_create_and_add("nodes",
766 sys_props.kobj_topology);
767 if (!sys_props.kobj_nodes)
770 sys_props.attr_genid.name = "generation_id";
771 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
772 sysfs_attr_init(&sys_props.attr_genid);
773 ret = sysfs_create_file(sys_props.kobj_topology,
774 &sys_props.attr_genid);
778 sys_props.attr_props.name = "system_properties";
779 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
780 sysfs_attr_init(&sys_props.attr_props);
781 ret = sysfs_create_file(sys_props.kobj_topology,
782 &sys_props.attr_props);
787 kfd_remove_sysfs_node_tree();
789 return kfd_build_sysfs_node_tree();
792 static void kfd_topology_release_sysfs(void)
794 kfd_remove_sysfs_node_tree();
795 if (sys_props.kobj_topology) {
796 sysfs_remove_file(sys_props.kobj_topology,
797 &sys_props.attr_genid);
798 sysfs_remove_file(sys_props.kobj_topology,
799 &sys_props.attr_props);
800 if (sys_props.kobj_nodes) {
801 kobject_del(sys_props.kobj_nodes);
802 kobject_put(sys_props.kobj_nodes);
803 sys_props.kobj_nodes = NULL;
805 kobject_del(sys_props.kobj_topology);
806 kobject_put(sys_props.kobj_topology);
807 sys_props.kobj_topology = NULL;
811 /* Called with write topology_lock acquired */
812 static void kfd_topology_update_device_list(struct list_head *temp_list,
813 struct list_head *master_list)
815 while (!list_empty(temp_list)) {
816 list_move_tail(temp_list->next, master_list);
817 sys_props.num_devices++;
821 static void kfd_debug_print_topology(void)
823 struct kfd_topology_device *dev;
825 down_read(&topology_lock);
827 dev = list_last_entry(&topology_device_list,
828 struct kfd_topology_device, list);
830 if (dev->node_props.cpu_cores_count &&
831 dev->node_props.simd_count) {
832 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
833 dev->node_props.device_id,
834 dev->node_props.vendor_id);
835 } else if (dev->node_props.cpu_cores_count)
836 pr_info("Topology: Add CPU node\n");
837 else if (dev->node_props.simd_count)
838 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
839 dev->node_props.device_id,
840 dev->node_props.vendor_id);
842 up_read(&topology_lock);
845 /* Helper function for intializing platform_xx members of
846 * kfd_system_properties. Uses OEM info from the last CPU/APU node.
848 static void kfd_update_system_properties(void)
850 struct kfd_topology_device *dev;
852 down_read(&topology_lock);
853 dev = list_last_entry(&topology_device_list,
854 struct kfd_topology_device, list);
856 sys_props.platform_id =
857 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
858 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
859 sys_props.platform_rev = dev->oem_revision;
861 up_read(&topology_lock);
864 static void find_system_memory(const struct dmi_header *dm,
867 struct kfd_mem_properties *mem;
868 u16 mem_width, mem_clock;
869 struct kfd_topology_device *kdev =
870 (struct kfd_topology_device *)private;
871 const u8 *dmi_data = (const u8 *)(dm + 1);
873 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
874 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
875 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
876 list_for_each_entry(mem, &kdev->mem_props, list) {
877 if (mem_width != 0xFFFF && mem_width != 0)
878 mem->width = mem_width;
880 mem->mem_clk_max = mem_clock;
886 * Performance counters information is not part of CRAT but we would like to
887 * put them in the sysfs under topology directory for Thunk to get the data.
888 * This function is called before updating the sysfs.
890 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
892 /* These are the only counters supported so far */
893 return kfd_iommu_add_perf_counters(kdev);
896 /* kfd_add_non_crat_information - Add information that is not currently
897 * defined in CRAT but is necessary for KFD topology
898 * @dev - topology device to which addition info is added
900 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
902 /* Check if CPU only node. */
904 /* Add system memory information */
905 dmi_walk(find_system_memory, kdev);
907 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
910 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
911 * Ignore CRAT for all other devices. AMD APU is identified if both CPU
912 * and GPU cores are present.
913 * @device_list - topology device list created by parsing ACPI CRAT table.
914 * @return - TRUE if invalid, FALSE is valid.
916 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
918 struct kfd_topology_device *dev;
920 list_for_each_entry(dev, device_list, list) {
921 if (dev->node_props.cpu_cores_count &&
922 dev->node_props.simd_count)
925 pr_info("Ignoring ACPI CRAT on non-APU system\n");
929 int kfd_topology_init(void)
931 void *crat_image = NULL;
932 size_t image_size = 0;
934 struct list_head temp_topology_device_list;
935 int cpu_only_node = 0;
936 struct kfd_topology_device *kdev;
937 int proximity_domain;
939 /* topology_device_list - Master list of all topology devices
940 * temp_topology_device_list - temporary list created while parsing CRAT
941 * or VCRAT. Once parsing is complete the contents of list is moved to
942 * topology_device_list
945 /* Initialize the head for the both the lists */
946 INIT_LIST_HEAD(&topology_device_list);
947 INIT_LIST_HEAD(&temp_topology_device_list);
948 init_rwsem(&topology_lock);
950 memset(&sys_props, 0, sizeof(sys_props));
952 /* Proximity domains in ACPI CRAT tables start counting at
953 * 0. The same should be true for virtual CRAT tables created
954 * at this stage. GPUs added later in kfd_topology_add_device
957 proximity_domain = 0;
960 * Get the CRAT image from the ACPI. If ACPI doesn't have one
961 * or if ACPI CRAT is invalid create a virtual CRAT.
962 * NOTE: The current implementation expects all AMD APUs to have
963 * CRAT. If no CRAT is available, it is assumed to be a CPU
965 ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
967 ret = kfd_parse_crat_table(crat_image,
968 &temp_topology_device_list,
971 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
972 kfd_release_topology_device_list(
973 &temp_topology_device_list);
974 kfd_destroy_crat_image(crat_image);
980 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
981 COMPUTE_UNIT_CPU, NULL,
985 pr_err("Error creating VCRAT table for CPU\n");
989 ret = kfd_parse_crat_table(crat_image,
990 &temp_topology_device_list,
993 pr_err("Error parsing VCRAT table for CPU\n");
998 kdev = list_first_entry(&temp_topology_device_list,
999 struct kfd_topology_device, list);
1000 kfd_add_perf_to_topology(kdev);
1002 down_write(&topology_lock);
1003 kfd_topology_update_device_list(&temp_topology_device_list,
1004 &topology_device_list);
1005 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
1006 ret = kfd_topology_update_sysfs();
1007 up_write(&topology_lock);
1010 sys_props.generation_count++;
1011 kfd_update_system_properties();
1012 kfd_debug_print_topology();
1013 pr_info("Finished initializing topology\n");
1015 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1017 /* For nodes with GPU, this information gets added
1018 * when GPU is detected (kfd_topology_add_device).
1020 if (cpu_only_node) {
1021 /* Add additional information to CPU only node created above */
1022 down_write(&topology_lock);
1023 kdev = list_first_entry(&topology_device_list,
1024 struct kfd_topology_device, list);
1025 up_write(&topology_lock);
1026 kfd_add_non_crat_information(kdev);
1030 kfd_destroy_crat_image(crat_image);
1034 void kfd_topology_shutdown(void)
1036 down_write(&topology_lock);
1037 kfd_topology_release_sysfs();
1038 kfd_release_live_view();
1039 up_write(&topology_lock);
1042 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1046 uint64_t local_mem_size;
1048 struct kfd_local_mem_info local_mem_info;
1053 gpu->kfd2kgd->get_local_mem_info(gpu->kgd, &local_mem_info);
1055 local_mem_size = local_mem_info.local_mem_size_private +
1056 local_mem_info.local_mem_size_public;
1058 buf[0] = gpu->pdev->devfn;
1059 buf[1] = gpu->pdev->subsystem_vendor;
1060 buf[2] = gpu->pdev->subsystem_device;
1061 buf[3] = gpu->pdev->device;
1062 buf[4] = gpu->pdev->bus->number;
1063 buf[5] = lower_32_bits(local_mem_size);
1064 buf[6] = upper_32_bits(local_mem_size);
1066 for (i = 0, hashout = 0; i < 7; i++)
1067 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1071 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1072 * the GPU device is not already present in the topology device
1073 * list then return NULL. This means a new topology device has to
1074 * be created for this GPU.
1075 * TODO: Rather than assiging @gpu to first topology device withtout
1076 * gpu attached, it will better to have more stringent check.
1078 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1080 struct kfd_topology_device *dev;
1081 struct kfd_topology_device *out_dev = NULL;
1083 down_write(&topology_lock);
1084 list_for_each_entry(dev, &topology_device_list, list)
1085 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
1090 up_write(&topology_lock);
1094 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1097 * TODO: Generate an event for thunk about the arrival/removal
1102 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1103 * patch this after CRAT parsing.
1105 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1107 struct kfd_mem_properties *mem;
1108 struct kfd_local_mem_info local_mem_info;
1113 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1114 * single bank of VRAM local memory.
1115 * for dGPUs - VCRAT reports only one bank of Local Memory
1116 * for APUs - If CRAT from ACPI reports more than one bank, then
1117 * all the banks will report the same mem_clk_max information
1119 dev->gpu->kfd2kgd->get_local_mem_info(dev->gpu->kgd,
1122 list_for_each_entry(mem, &dev->mem_props, list)
1123 mem->mem_clk_max = local_mem_info.mem_clk_max;
1126 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1128 struct kfd_iolink_properties *link;
1130 if (!dev || !dev->gpu)
1133 /* GPU only creates direck links so apply flags setting to all */
1134 if (dev->gpu->device_info->asic_family == CHIP_HAWAII)
1135 list_for_each_entry(link, &dev->io_link_props, list)
1136 link->flags = CRAT_IOLINK_FLAGS_ENABLED |
1137 CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1138 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1141 int kfd_topology_add_device(struct kfd_dev *gpu)
1144 struct kfd_topology_device *dev;
1145 struct kfd_cu_info cu_info;
1147 struct list_head temp_topology_device_list;
1148 void *crat_image = NULL;
1149 size_t image_size = 0;
1150 int proximity_domain;
1152 INIT_LIST_HEAD(&temp_topology_device_list);
1154 gpu_id = kfd_generate_gpu_id(gpu);
1156 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1158 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1160 /* Check to see if this gpu device exists in the topology_device_list.
1161 * If so, assign the gpu to that device,
1162 * else create a Virtual CRAT for this gpu device and then parse that
1163 * CRAT to create a new topology device. Once created assign the gpu to
1164 * that topology device
1166 dev = kfd_assign_gpu(gpu);
1168 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1169 COMPUTE_UNIT_GPU, gpu,
1172 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1176 res = kfd_parse_crat_table(crat_image,
1177 &temp_topology_device_list,
1180 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1185 down_write(&topology_lock);
1186 kfd_topology_update_device_list(&temp_topology_device_list,
1187 &topology_device_list);
1189 /* Update the SYSFS tree, since we added another topology
1192 res = kfd_topology_update_sysfs();
1193 up_write(&topology_lock);
1196 sys_props.generation_count++;
1198 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1200 dev = kfd_assign_gpu(gpu);
1201 if (WARN_ON(!dev)) {
1207 dev->gpu_id = gpu_id;
1210 /* TODO: Move the following lines to function
1211 * kfd_add_non_crat_information
1214 /* Fill-in additional information that is not available in CRAT but
1215 * needed for the topology
1218 dev->gpu->kfd2kgd->get_cu_info(dev->gpu->kgd, &cu_info);
1219 dev->node_props.simd_arrays_per_engine =
1220 cu_info.num_shader_arrays_per_engine;
1222 dev->node_props.vendor_id = gpu->pdev->vendor;
1223 dev->node_props.device_id = gpu->pdev->device;
1224 dev->node_props.location_id = PCI_DEVID(gpu->pdev->bus->number,
1226 dev->node_props.max_engine_clk_fcompute =
1227 dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz(dev->gpu->kgd);
1228 dev->node_props.max_engine_clk_ccompute =
1229 cpufreq_quick_get_max(0) / 1000;
1230 dev->node_props.drm_render_minor =
1231 gpu->shared_resources.drm_render_minor;
1233 kfd_fill_mem_clk_max_info(dev);
1234 kfd_fill_iolink_non_crat_info(dev);
1236 switch (dev->gpu->device_info->asic_family) {
1240 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 <<
1241 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1242 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1246 case CHIP_POLARIS10:
1247 case CHIP_POLARIS11:
1248 pr_debug("Adding doorbell packet type capability\n");
1249 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 <<
1250 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1251 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1255 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 <<
1256 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1257 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1260 WARN(1, "Unexpected ASIC family %u",
1261 dev->gpu->device_info->asic_family);
1264 /* Fix errors in CZ CRAT.
1265 * simd_count: Carrizo CRAT reports wrong simd_count, probably
1266 * because it doesn't consider masked out CUs
1267 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd
1268 * capability flag: Carrizo CRAT doesn't report IOMMU flags
1270 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) {
1271 dev->node_props.simd_count =
1272 cu_info.simd_per_cu * cu_info.cu_active_number;
1273 dev->node_props.max_waves_per_simd = 10;
1274 dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
1277 kfd_debug_print_topology();
1280 kfd_notify_gpu_change(gpu_id, 1);
1282 kfd_destroy_crat_image(crat_image);
1286 int kfd_topology_remove_device(struct kfd_dev *gpu)
1288 struct kfd_topology_device *dev, *tmp;
1292 down_write(&topology_lock);
1294 list_for_each_entry_safe(dev, tmp, &topology_device_list, list)
1295 if (dev->gpu == gpu) {
1296 gpu_id = dev->gpu_id;
1297 kfd_remove_sysfs_node_entry(dev);
1298 kfd_release_topology_device(dev);
1299 sys_props.num_devices--;
1301 if (kfd_topology_update_sysfs() < 0)
1302 kfd_topology_release_sysfs();
1306 up_write(&topology_lock);
1309 kfd_notify_gpu_change(gpu_id, 0);
1314 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD
1315 * topology. If GPU device is found @idx, then valid kfd_dev pointer is
1316 * returned through @kdev
1317 * Return - 0: On success (@kdev will be NULL for non GPU nodes)
1318 * -1: If end of list
1320 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
1323 struct kfd_topology_device *top_dev;
1324 uint8_t device_idx = 0;
1327 down_read(&topology_lock);
1329 list_for_each_entry(top_dev, &topology_device_list, list) {
1330 if (device_idx == idx) {
1331 *kdev = top_dev->gpu;
1332 up_read(&topology_lock);
1339 up_read(&topology_lock);
1345 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
1347 const struct cpuinfo_x86 *cpuinfo;
1348 int first_cpu_of_numa_node;
1350 if (!cpumask || cpumask == cpu_none_mask)
1352 first_cpu_of_numa_node = cpumask_first(cpumask);
1353 if (first_cpu_of_numa_node >= nr_cpu_ids)
1355 cpuinfo = &cpu_data(first_cpu_of_numa_node);
1357 return cpuinfo->apicid;
1360 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor
1361 * of the given NUMA node (numa_node_id)
1362 * Return -1 on failure
1364 int kfd_numa_node_to_apic_id(int numa_node_id)
1366 if (numa_node_id == -1) {
1367 pr_warn("Invalid NUMA Node. Use online CPU mask\n");
1368 return kfd_cpumask_to_apic_id(cpu_online_mask);
1370 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id));
1373 #if defined(CONFIG_DEBUG_FS)
1375 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data)
1377 struct kfd_topology_device *dev;
1381 down_read(&topology_lock);
1383 list_for_each_entry(dev, &topology_device_list, list) {
1389 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1390 r = dqm_debugfs_hqds(m, dev->gpu->dqm);
1395 up_read(&topology_lock);
1400 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data)
1402 struct kfd_topology_device *dev;
1406 down_read(&topology_lock);
1408 list_for_each_entry(dev, &topology_device_list, list) {
1414 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1415 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets);
1420 up_read(&topology_lock);