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_dev *kfd_device_by_id(uint32_t gpu_id)
68 struct kfd_topology_device *top_dev;
69 struct kfd_dev *device = 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) {
75 device = top_dev->gpu;
79 up_read(&topology_lock);
84 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
86 struct kfd_topology_device *top_dev;
87 struct kfd_dev *device = NULL;
89 down_read(&topology_lock);
91 list_for_each_entry(top_dev, &topology_device_list, list)
92 if (top_dev->gpu->pdev == pdev) {
93 device = top_dev->gpu;
97 up_read(&topology_lock);
102 /* Called with write topology_lock acquired */
103 static void kfd_release_topology_device(struct kfd_topology_device *dev)
105 struct kfd_mem_properties *mem;
106 struct kfd_cache_properties *cache;
107 struct kfd_iolink_properties *iolink;
108 struct kfd_perf_properties *perf;
110 list_del(&dev->list);
112 while (dev->mem_props.next != &dev->mem_props) {
113 mem = container_of(dev->mem_props.next,
114 struct kfd_mem_properties, list);
115 list_del(&mem->list);
119 while (dev->cache_props.next != &dev->cache_props) {
120 cache = container_of(dev->cache_props.next,
121 struct kfd_cache_properties, list);
122 list_del(&cache->list);
126 while (dev->io_link_props.next != &dev->io_link_props) {
127 iolink = container_of(dev->io_link_props.next,
128 struct kfd_iolink_properties, list);
129 list_del(&iolink->list);
133 while (dev->perf_props.next != &dev->perf_props) {
134 perf = container_of(dev->perf_props.next,
135 struct kfd_perf_properties, list);
136 list_del(&perf->list);
143 void kfd_release_topology_device_list(struct list_head *device_list)
145 struct kfd_topology_device *dev;
147 while (!list_empty(device_list)) {
148 dev = list_first_entry(device_list,
149 struct kfd_topology_device, list);
150 kfd_release_topology_device(dev);
154 static void kfd_release_live_view(void)
156 kfd_release_topology_device_list(&topology_device_list);
157 memset(&sys_props, 0, sizeof(sys_props));
160 struct kfd_topology_device *kfd_create_topology_device(
161 struct list_head *device_list)
163 struct kfd_topology_device *dev;
165 dev = kfd_alloc_struct(dev);
167 pr_err("No memory to allocate a topology device");
171 INIT_LIST_HEAD(&dev->mem_props);
172 INIT_LIST_HEAD(&dev->cache_props);
173 INIT_LIST_HEAD(&dev->io_link_props);
174 INIT_LIST_HEAD(&dev->perf_props);
176 list_add_tail(&dev->list, device_list);
182 #define sysfs_show_gen_prop(buffer, fmt, ...) \
183 snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__)
184 #define sysfs_show_32bit_prop(buffer, name, value) \
185 sysfs_show_gen_prop(buffer, "%s %u\n", name, value)
186 #define sysfs_show_64bit_prop(buffer, name, value) \
187 sysfs_show_gen_prop(buffer, "%s %llu\n", name, value)
188 #define sysfs_show_32bit_val(buffer, value) \
189 sysfs_show_gen_prop(buffer, "%u\n", value)
190 #define sysfs_show_str_val(buffer, value) \
191 sysfs_show_gen_prop(buffer, "%s\n", value)
193 static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr,
198 /* Making sure that the buffer is an empty string */
201 if (attr == &sys_props.attr_genid) {
202 ret = sysfs_show_32bit_val(buffer, sys_props.generation_count);
203 } else if (attr == &sys_props.attr_props) {
204 sysfs_show_64bit_prop(buffer, "platform_oem",
205 sys_props.platform_oem);
206 sysfs_show_64bit_prop(buffer, "platform_id",
207 sys_props.platform_id);
208 ret = sysfs_show_64bit_prop(buffer, "platform_rev",
209 sys_props.platform_rev);
217 static void kfd_topology_kobj_release(struct kobject *kobj)
222 static const struct sysfs_ops sysprops_ops = {
223 .show = sysprops_show,
226 static struct kobj_type sysprops_type = {
227 .release = kfd_topology_kobj_release,
228 .sysfs_ops = &sysprops_ops,
231 static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr,
235 struct kfd_iolink_properties *iolink;
237 /* Making sure that the buffer is an empty string */
240 iolink = container_of(attr, struct kfd_iolink_properties, attr);
241 sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type);
242 sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj);
243 sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min);
244 sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from);
245 sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to);
246 sysfs_show_32bit_prop(buffer, "weight", iolink->weight);
247 sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency);
248 sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency);
249 sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth);
250 sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth);
251 sysfs_show_32bit_prop(buffer, "recommended_transfer_size",
252 iolink->rec_transfer_size);
253 ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags);
258 static const struct sysfs_ops iolink_ops = {
262 static struct kobj_type iolink_type = {
263 .release = kfd_topology_kobj_release,
264 .sysfs_ops = &iolink_ops,
267 static ssize_t mem_show(struct kobject *kobj, struct attribute *attr,
271 struct kfd_mem_properties *mem;
273 /* Making sure that the buffer is an empty string */
276 mem = container_of(attr, struct kfd_mem_properties, attr);
277 sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type);
278 sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes);
279 sysfs_show_32bit_prop(buffer, "flags", mem->flags);
280 sysfs_show_32bit_prop(buffer, "width", mem->width);
281 ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max);
286 static const struct sysfs_ops mem_ops = {
290 static struct kobj_type mem_type = {
291 .release = kfd_topology_kobj_release,
292 .sysfs_ops = &mem_ops,
295 static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr,
300 struct kfd_cache_properties *cache;
302 /* Making sure that the buffer is an empty string */
305 cache = container_of(attr, struct kfd_cache_properties, attr);
306 sysfs_show_32bit_prop(buffer, "processor_id_low",
307 cache->processor_id_low);
308 sysfs_show_32bit_prop(buffer, "level", cache->cache_level);
309 sysfs_show_32bit_prop(buffer, "size", cache->cache_size);
310 sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size);
311 sysfs_show_32bit_prop(buffer, "cache_lines_per_tag",
312 cache->cachelines_per_tag);
313 sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc);
314 sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency);
315 sysfs_show_32bit_prop(buffer, "type", cache->cache_type);
316 snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer);
317 for (i = 0; i < CRAT_SIBLINGMAP_SIZE; i++)
318 for (j = 0; j < sizeof(cache->sibling_map[0])*8; j++) {
320 if (cache->sibling_map[i] & (1 << j))
321 ret = snprintf(buffer, PAGE_SIZE,
322 "%s%d%s", buffer, 1, ",");
324 ret = snprintf(buffer, PAGE_SIZE,
325 "%s%d%s", buffer, 0, ",");
327 /* Replace the last "," with end of line */
328 *(buffer + strlen(buffer) - 1) = 0xA;
332 static const struct sysfs_ops cache_ops = {
333 .show = kfd_cache_show,
336 static struct kobj_type cache_type = {
337 .release = kfd_topology_kobj_release,
338 .sysfs_ops = &cache_ops,
341 /****** Sysfs of Performance Counters ******/
343 struct kfd_perf_attr {
344 struct kobj_attribute attr;
348 static ssize_t perf_show(struct kobject *kobj, struct kobj_attribute *attrs,
351 struct kfd_perf_attr *attr;
354 attr = container_of(attrs, struct kfd_perf_attr, attr);
355 if (!attr->data) /* invalid data for PMC */
358 return sysfs_show_32bit_val(buf, attr->data);
361 #define KFD_PERF_DESC(_name, _data) \
363 .attr = __ATTR(_name, 0444, perf_show, NULL), \
367 static struct kfd_perf_attr perf_attr_iommu[] = {
368 KFD_PERF_DESC(max_concurrent, 0),
369 KFD_PERF_DESC(num_counters, 0),
370 KFD_PERF_DESC(counter_ids, 0),
372 /****************************************/
374 static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
377 struct kfd_topology_device *dev;
378 char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
380 uint32_t log_max_watch_addr;
382 /* Making sure that the buffer is an empty string */
385 if (strcmp(attr->name, "gpu_id") == 0) {
386 dev = container_of(attr, struct kfd_topology_device,
388 return sysfs_show_32bit_val(buffer, dev->gpu_id);
391 if (strcmp(attr->name, "name") == 0) {
392 dev = container_of(attr, struct kfd_topology_device,
394 for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) {
396 (char)dev->node_props.marketing_name[i];
397 if (dev->node_props.marketing_name[i] == 0)
400 public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0;
401 return sysfs_show_str_val(buffer, public_name);
404 dev = container_of(attr, struct kfd_topology_device,
406 sysfs_show_32bit_prop(buffer, "cpu_cores_count",
407 dev->node_props.cpu_cores_count);
408 sysfs_show_32bit_prop(buffer, "simd_count",
409 dev->node_props.simd_count);
410 sysfs_show_32bit_prop(buffer, "mem_banks_count",
411 dev->node_props.mem_banks_count);
412 sysfs_show_32bit_prop(buffer, "caches_count",
413 dev->node_props.caches_count);
414 sysfs_show_32bit_prop(buffer, "io_links_count",
415 dev->node_props.io_links_count);
416 sysfs_show_32bit_prop(buffer, "cpu_core_id_base",
417 dev->node_props.cpu_core_id_base);
418 sysfs_show_32bit_prop(buffer, "simd_id_base",
419 dev->node_props.simd_id_base);
420 sysfs_show_32bit_prop(buffer, "max_waves_per_simd",
421 dev->node_props.max_waves_per_simd);
422 sysfs_show_32bit_prop(buffer, "lds_size_in_kb",
423 dev->node_props.lds_size_in_kb);
424 sysfs_show_32bit_prop(buffer, "gds_size_in_kb",
425 dev->node_props.gds_size_in_kb);
426 sysfs_show_32bit_prop(buffer, "wave_front_size",
427 dev->node_props.wave_front_size);
428 sysfs_show_32bit_prop(buffer, "array_count",
429 dev->node_props.array_count);
430 sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine",
431 dev->node_props.simd_arrays_per_engine);
432 sysfs_show_32bit_prop(buffer, "cu_per_simd_array",
433 dev->node_props.cu_per_simd_array);
434 sysfs_show_32bit_prop(buffer, "simd_per_cu",
435 dev->node_props.simd_per_cu);
436 sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu",
437 dev->node_props.max_slots_scratch_cu);
438 sysfs_show_32bit_prop(buffer, "vendor_id",
439 dev->node_props.vendor_id);
440 sysfs_show_32bit_prop(buffer, "device_id",
441 dev->node_props.device_id);
442 sysfs_show_32bit_prop(buffer, "location_id",
443 dev->node_props.location_id);
444 sysfs_show_32bit_prop(buffer, "drm_render_minor",
445 dev->node_props.drm_render_minor);
449 __ilog2_u32(dev->gpu->device_info->num_of_watch_points);
451 if (log_max_watch_addr) {
452 dev->node_props.capability |=
453 HSA_CAP_WATCH_POINTS_SUPPORTED;
455 dev->node_props.capability |=
456 ((log_max_watch_addr <<
457 HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) &
458 HSA_CAP_WATCH_POINTS_TOTALBITS_MASK);
461 if (dev->gpu->device_info->asic_family == CHIP_TONGA)
462 dev->node_props.capability |=
463 HSA_CAP_AQL_QUEUE_DOUBLE_MAP;
465 sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
466 dev->node_props.max_engine_clk_fcompute);
468 sysfs_show_64bit_prop(buffer, "local_mem_size",
469 (unsigned long long int) 0);
471 sysfs_show_32bit_prop(buffer, "fw_version",
472 dev->gpu->kfd2kgd->get_fw_version(
475 sysfs_show_32bit_prop(buffer, "capability",
476 dev->node_props.capability);
479 return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
480 cpufreq_quick_get_max(0)/1000);
483 static const struct sysfs_ops node_ops = {
487 static struct kobj_type node_type = {
488 .release = kfd_topology_kobj_release,
489 .sysfs_ops = &node_ops,
492 static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr)
494 sysfs_remove_file(kobj, attr);
499 static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev)
501 struct kfd_iolink_properties *iolink;
502 struct kfd_cache_properties *cache;
503 struct kfd_mem_properties *mem;
504 struct kfd_perf_properties *perf;
506 if (dev->kobj_iolink) {
507 list_for_each_entry(iolink, &dev->io_link_props, list)
509 kfd_remove_sysfs_file(iolink->kobj,
513 kobject_del(dev->kobj_iolink);
514 kobject_put(dev->kobj_iolink);
515 dev->kobj_iolink = NULL;
518 if (dev->kobj_cache) {
519 list_for_each_entry(cache, &dev->cache_props, list)
521 kfd_remove_sysfs_file(cache->kobj,
525 kobject_del(dev->kobj_cache);
526 kobject_put(dev->kobj_cache);
527 dev->kobj_cache = NULL;
531 list_for_each_entry(mem, &dev->mem_props, list)
533 kfd_remove_sysfs_file(mem->kobj, &mem->attr);
536 kobject_del(dev->kobj_mem);
537 kobject_put(dev->kobj_mem);
538 dev->kobj_mem = NULL;
541 if (dev->kobj_perf) {
542 list_for_each_entry(perf, &dev->perf_props, list) {
543 kfree(perf->attr_group);
544 perf->attr_group = NULL;
546 kobject_del(dev->kobj_perf);
547 kobject_put(dev->kobj_perf);
548 dev->kobj_perf = NULL;
551 if (dev->kobj_node) {
552 sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid);
553 sysfs_remove_file(dev->kobj_node, &dev->attr_name);
554 sysfs_remove_file(dev->kobj_node, &dev->attr_props);
555 kobject_del(dev->kobj_node);
556 kobject_put(dev->kobj_node);
557 dev->kobj_node = NULL;
561 static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
564 struct kfd_iolink_properties *iolink;
565 struct kfd_cache_properties *cache;
566 struct kfd_mem_properties *mem;
567 struct kfd_perf_properties *perf;
569 uint32_t i, num_attrs;
570 struct attribute **attrs;
572 if (WARN_ON(dev->kobj_node))
576 * Creating the sysfs folders
578 dev->kobj_node = kfd_alloc_struct(dev->kobj_node);
582 ret = kobject_init_and_add(dev->kobj_node, &node_type,
583 sys_props.kobj_nodes, "%d", id);
587 dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node);
591 dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node);
592 if (!dev->kobj_cache)
595 dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node);
596 if (!dev->kobj_iolink)
599 dev->kobj_perf = kobject_create_and_add("perf", dev->kobj_node);
604 * Creating sysfs files for node properties
606 dev->attr_gpuid.name = "gpu_id";
607 dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE;
608 sysfs_attr_init(&dev->attr_gpuid);
609 dev->attr_name.name = "name";
610 dev->attr_name.mode = KFD_SYSFS_FILE_MODE;
611 sysfs_attr_init(&dev->attr_name);
612 dev->attr_props.name = "properties";
613 dev->attr_props.mode = KFD_SYSFS_FILE_MODE;
614 sysfs_attr_init(&dev->attr_props);
615 ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid);
618 ret = sysfs_create_file(dev->kobj_node, &dev->attr_name);
621 ret = sysfs_create_file(dev->kobj_node, &dev->attr_props);
626 list_for_each_entry(mem, &dev->mem_props, list) {
627 mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
630 ret = kobject_init_and_add(mem->kobj, &mem_type,
631 dev->kobj_mem, "%d", i);
635 mem->attr.name = "properties";
636 mem->attr.mode = KFD_SYSFS_FILE_MODE;
637 sysfs_attr_init(&mem->attr);
638 ret = sysfs_create_file(mem->kobj, &mem->attr);
645 list_for_each_entry(cache, &dev->cache_props, list) {
646 cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
649 ret = kobject_init_and_add(cache->kobj, &cache_type,
650 dev->kobj_cache, "%d", i);
654 cache->attr.name = "properties";
655 cache->attr.mode = KFD_SYSFS_FILE_MODE;
656 sysfs_attr_init(&cache->attr);
657 ret = sysfs_create_file(cache->kobj, &cache->attr);
664 list_for_each_entry(iolink, &dev->io_link_props, list) {
665 iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
668 ret = kobject_init_and_add(iolink->kobj, &iolink_type,
669 dev->kobj_iolink, "%d", i);
673 iolink->attr.name = "properties";
674 iolink->attr.mode = KFD_SYSFS_FILE_MODE;
675 sysfs_attr_init(&iolink->attr);
676 ret = sysfs_create_file(iolink->kobj, &iolink->attr);
682 /* All hardware blocks have the same number of attributes. */
683 num_attrs = ARRAY_SIZE(perf_attr_iommu);
684 list_for_each_entry(perf, &dev->perf_props, list) {
685 perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
686 * num_attrs + sizeof(struct attribute_group),
688 if (!perf->attr_group)
691 attrs = (struct attribute **)(perf->attr_group + 1);
692 if (!strcmp(perf->block_name, "iommu")) {
693 /* Information of IOMMU's num_counters and counter_ids is shown
694 * under /sys/bus/event_source/devices/amd_iommu. We don't
697 perf_attr_iommu[0].data = perf->max_concurrent;
698 for (i = 0; i < num_attrs; i++)
699 attrs[i] = &perf_attr_iommu[i].attr.attr;
701 perf->attr_group->name = perf->block_name;
702 perf->attr_group->attrs = attrs;
703 ret = sysfs_create_group(dev->kobj_perf, perf->attr_group);
711 /* Called with write topology lock acquired */
712 static int kfd_build_sysfs_node_tree(void)
714 struct kfd_topology_device *dev;
718 list_for_each_entry(dev, &topology_device_list, list) {
719 ret = kfd_build_sysfs_node_entry(dev, i);
728 /* Called with write topology lock acquired */
729 static void kfd_remove_sysfs_node_tree(void)
731 struct kfd_topology_device *dev;
733 list_for_each_entry(dev, &topology_device_list, list)
734 kfd_remove_sysfs_node_entry(dev);
737 static int kfd_topology_update_sysfs(void)
741 pr_info("Creating topology SYSFS entries\n");
742 if (!sys_props.kobj_topology) {
743 sys_props.kobj_topology =
744 kfd_alloc_struct(sys_props.kobj_topology);
745 if (!sys_props.kobj_topology)
748 ret = kobject_init_and_add(sys_props.kobj_topology,
749 &sysprops_type, &kfd_device->kobj,
754 sys_props.kobj_nodes = kobject_create_and_add("nodes",
755 sys_props.kobj_topology);
756 if (!sys_props.kobj_nodes)
759 sys_props.attr_genid.name = "generation_id";
760 sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE;
761 sysfs_attr_init(&sys_props.attr_genid);
762 ret = sysfs_create_file(sys_props.kobj_topology,
763 &sys_props.attr_genid);
767 sys_props.attr_props.name = "system_properties";
768 sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE;
769 sysfs_attr_init(&sys_props.attr_props);
770 ret = sysfs_create_file(sys_props.kobj_topology,
771 &sys_props.attr_props);
776 kfd_remove_sysfs_node_tree();
778 return kfd_build_sysfs_node_tree();
781 static void kfd_topology_release_sysfs(void)
783 kfd_remove_sysfs_node_tree();
784 if (sys_props.kobj_topology) {
785 sysfs_remove_file(sys_props.kobj_topology,
786 &sys_props.attr_genid);
787 sysfs_remove_file(sys_props.kobj_topology,
788 &sys_props.attr_props);
789 if (sys_props.kobj_nodes) {
790 kobject_del(sys_props.kobj_nodes);
791 kobject_put(sys_props.kobj_nodes);
792 sys_props.kobj_nodes = NULL;
794 kobject_del(sys_props.kobj_topology);
795 kobject_put(sys_props.kobj_topology);
796 sys_props.kobj_topology = NULL;
800 /* Called with write topology_lock acquired */
801 static void kfd_topology_update_device_list(struct list_head *temp_list,
802 struct list_head *master_list)
804 while (!list_empty(temp_list)) {
805 list_move_tail(temp_list->next, master_list);
806 sys_props.num_devices++;
810 static void kfd_debug_print_topology(void)
812 struct kfd_topology_device *dev;
814 down_read(&topology_lock);
816 dev = list_last_entry(&topology_device_list,
817 struct kfd_topology_device, list);
819 if (dev->node_props.cpu_cores_count &&
820 dev->node_props.simd_count) {
821 pr_info("Topology: Add APU node [0x%0x:0x%0x]\n",
822 dev->node_props.device_id,
823 dev->node_props.vendor_id);
824 } else if (dev->node_props.cpu_cores_count)
825 pr_info("Topology: Add CPU node\n");
826 else if (dev->node_props.simd_count)
827 pr_info("Topology: Add dGPU node [0x%0x:0x%0x]\n",
828 dev->node_props.device_id,
829 dev->node_props.vendor_id);
831 up_read(&topology_lock);
834 /* Helper function for intializing platform_xx members of
835 * kfd_system_properties. Uses OEM info from the last CPU/APU node.
837 static void kfd_update_system_properties(void)
839 struct kfd_topology_device *dev;
841 down_read(&topology_lock);
842 dev = list_last_entry(&topology_device_list,
843 struct kfd_topology_device, list);
845 sys_props.platform_id =
846 (*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
847 sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
848 sys_props.platform_rev = dev->oem_revision;
850 up_read(&topology_lock);
853 static void find_system_memory(const struct dmi_header *dm,
856 struct kfd_mem_properties *mem;
857 u16 mem_width, mem_clock;
858 struct kfd_topology_device *kdev =
859 (struct kfd_topology_device *)private;
860 const u8 *dmi_data = (const u8 *)(dm + 1);
862 if (dm->type == DMI_ENTRY_MEM_DEVICE && dm->length >= 0x15) {
863 mem_width = (u16)(*(const u16 *)(dmi_data + 0x6));
864 mem_clock = (u16)(*(const u16 *)(dmi_data + 0x11));
865 list_for_each_entry(mem, &kdev->mem_props, list) {
866 if (mem_width != 0xFFFF && mem_width != 0)
867 mem->width = mem_width;
869 mem->mem_clk_max = mem_clock;
875 * Performance counters information is not part of CRAT but we would like to
876 * put them in the sysfs under topology directory for Thunk to get the data.
877 * This function is called before updating the sysfs.
879 static int kfd_add_perf_to_topology(struct kfd_topology_device *kdev)
881 /* These are the only counters supported so far */
882 return kfd_iommu_add_perf_counters(kdev);
885 /* kfd_add_non_crat_information - Add information that is not currently
886 * defined in CRAT but is necessary for KFD topology
887 * @dev - topology device to which addition info is added
889 static void kfd_add_non_crat_information(struct kfd_topology_device *kdev)
891 /* Check if CPU only node. */
893 /* Add system memory information */
894 dmi_walk(find_system_memory, kdev);
896 /* TODO: For GPU node, rearrange code from kfd_topology_add_device */
899 /* kfd_is_acpi_crat_invalid - CRAT from ACPI is valid only for AMD APU devices.
900 * Ignore CRAT for all other devices. AMD APU is identified if both CPU
901 * and GPU cores are present.
902 * @device_list - topology device list created by parsing ACPI CRAT table.
903 * @return - TRUE if invalid, FALSE is valid.
905 static bool kfd_is_acpi_crat_invalid(struct list_head *device_list)
907 struct kfd_topology_device *dev;
909 list_for_each_entry(dev, device_list, list) {
910 if (dev->node_props.cpu_cores_count &&
911 dev->node_props.simd_count)
914 pr_info("Ignoring ACPI CRAT on non-APU system\n");
918 int kfd_topology_init(void)
920 void *crat_image = NULL;
921 size_t image_size = 0;
923 struct list_head temp_topology_device_list;
924 int cpu_only_node = 0;
925 struct kfd_topology_device *kdev;
926 int proximity_domain;
928 /* topology_device_list - Master list of all topology devices
929 * temp_topology_device_list - temporary list created while parsing CRAT
930 * or VCRAT. Once parsing is complete the contents of list is moved to
931 * topology_device_list
934 /* Initialize the head for the both the lists */
935 INIT_LIST_HEAD(&topology_device_list);
936 INIT_LIST_HEAD(&temp_topology_device_list);
937 init_rwsem(&topology_lock);
939 memset(&sys_props, 0, sizeof(sys_props));
941 /* Proximity domains in ACPI CRAT tables start counting at
942 * 0. The same should be true for virtual CRAT tables created
943 * at this stage. GPUs added later in kfd_topology_add_device
946 proximity_domain = 0;
949 * Get the CRAT image from the ACPI. If ACPI doesn't have one
950 * or if ACPI CRAT is invalid create a virtual CRAT.
951 * NOTE: The current implementation expects all AMD APUs to have
952 * CRAT. If no CRAT is available, it is assumed to be a CPU
954 ret = kfd_create_crat_image_acpi(&crat_image, &image_size);
956 ret = kfd_parse_crat_table(crat_image,
957 &temp_topology_device_list,
960 kfd_is_acpi_crat_invalid(&temp_topology_device_list)) {
961 kfd_release_topology_device_list(
962 &temp_topology_device_list);
963 kfd_destroy_crat_image(crat_image);
969 ret = kfd_create_crat_image_virtual(&crat_image, &image_size,
970 COMPUTE_UNIT_CPU, NULL,
974 pr_err("Error creating VCRAT table for CPU\n");
978 ret = kfd_parse_crat_table(crat_image,
979 &temp_topology_device_list,
982 pr_err("Error parsing VCRAT table for CPU\n");
987 kdev = list_first_entry(&temp_topology_device_list,
988 struct kfd_topology_device, list);
989 kfd_add_perf_to_topology(kdev);
991 down_write(&topology_lock);
992 kfd_topology_update_device_list(&temp_topology_device_list,
993 &topology_device_list);
994 atomic_set(&topology_crat_proximity_domain, sys_props.num_devices-1);
995 ret = kfd_topology_update_sysfs();
996 up_write(&topology_lock);
999 sys_props.generation_count++;
1000 kfd_update_system_properties();
1001 kfd_debug_print_topology();
1002 pr_info("Finished initializing topology\n");
1004 pr_err("Failed to update topology in sysfs ret=%d\n", ret);
1006 /* For nodes with GPU, this information gets added
1007 * when GPU is detected (kfd_topology_add_device).
1009 if (cpu_only_node) {
1010 /* Add additional information to CPU only node created above */
1011 down_write(&topology_lock);
1012 kdev = list_first_entry(&topology_device_list,
1013 struct kfd_topology_device, list);
1014 up_write(&topology_lock);
1015 kfd_add_non_crat_information(kdev);
1019 kfd_destroy_crat_image(crat_image);
1023 void kfd_topology_shutdown(void)
1025 down_write(&topology_lock);
1026 kfd_topology_release_sysfs();
1027 kfd_release_live_view();
1028 up_write(&topology_lock);
1031 static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu)
1035 uint64_t local_mem_size;
1037 struct kfd_local_mem_info local_mem_info;
1042 gpu->kfd2kgd->get_local_mem_info(gpu->kgd, &local_mem_info);
1044 local_mem_size = local_mem_info.local_mem_size_private +
1045 local_mem_info.local_mem_size_public;
1047 buf[0] = gpu->pdev->devfn;
1048 buf[1] = gpu->pdev->subsystem_vendor;
1049 buf[2] = gpu->pdev->subsystem_device;
1050 buf[3] = gpu->pdev->device;
1051 buf[4] = gpu->pdev->bus->number;
1052 buf[5] = lower_32_bits(local_mem_size);
1053 buf[6] = upper_32_bits(local_mem_size);
1055 for (i = 0, hashout = 0; i < 7; i++)
1056 hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH);
1060 /* kfd_assign_gpu - Attach @gpu to the correct kfd topology device. If
1061 * the GPU device is not already present in the topology device
1062 * list then return NULL. This means a new topology device has to
1063 * be created for this GPU.
1064 * TODO: Rather than assiging @gpu to first topology device withtout
1065 * gpu attached, it will better to have more stringent check.
1067 static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu)
1069 struct kfd_topology_device *dev;
1070 struct kfd_topology_device *out_dev = NULL;
1072 down_write(&topology_lock);
1073 list_for_each_entry(dev, &topology_device_list, list)
1074 if (!dev->gpu && (dev->node_props.simd_count > 0)) {
1079 up_write(&topology_lock);
1083 static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival)
1086 * TODO: Generate an event for thunk about the arrival/removal
1091 /* kfd_fill_mem_clk_max_info - Since CRAT doesn't have memory clock info,
1092 * patch this after CRAT parsing.
1094 static void kfd_fill_mem_clk_max_info(struct kfd_topology_device *dev)
1096 struct kfd_mem_properties *mem;
1097 struct kfd_local_mem_info local_mem_info;
1102 /* Currently, amdgpu driver (amdgpu_mc) deals only with GPUs with
1103 * single bank of VRAM local memory.
1104 * for dGPUs - VCRAT reports only one bank of Local Memory
1105 * for APUs - If CRAT from ACPI reports more than one bank, then
1106 * all the banks will report the same mem_clk_max information
1108 dev->gpu->kfd2kgd->get_local_mem_info(dev->gpu->kgd,
1111 list_for_each_entry(mem, &dev->mem_props, list)
1112 mem->mem_clk_max = local_mem_info.mem_clk_max;
1115 static void kfd_fill_iolink_non_crat_info(struct kfd_topology_device *dev)
1117 struct kfd_iolink_properties *link;
1119 if (!dev || !dev->gpu)
1122 /* GPU only creates direck links so apply flags setting to all */
1123 if (dev->gpu->device_info->asic_family == CHIP_HAWAII)
1124 list_for_each_entry(link, &dev->io_link_props, list)
1125 link->flags = CRAT_IOLINK_FLAGS_ENABLED |
1126 CRAT_IOLINK_FLAGS_NO_ATOMICS_32_BIT |
1127 CRAT_IOLINK_FLAGS_NO_ATOMICS_64_BIT;
1130 int kfd_topology_add_device(struct kfd_dev *gpu)
1133 struct kfd_topology_device *dev;
1134 struct kfd_cu_info cu_info;
1136 struct list_head temp_topology_device_list;
1137 void *crat_image = NULL;
1138 size_t image_size = 0;
1139 int proximity_domain;
1141 INIT_LIST_HEAD(&temp_topology_device_list);
1143 gpu_id = kfd_generate_gpu_id(gpu);
1145 pr_debug("Adding new GPU (ID: 0x%x) to topology\n", gpu_id);
1147 proximity_domain = atomic_inc_return(&topology_crat_proximity_domain);
1149 /* Check to see if this gpu device exists in the topology_device_list.
1150 * If so, assign the gpu to that device,
1151 * else create a Virtual CRAT for this gpu device and then parse that
1152 * CRAT to create a new topology device. Once created assign the gpu to
1153 * that topology device
1155 dev = kfd_assign_gpu(gpu);
1157 res = kfd_create_crat_image_virtual(&crat_image, &image_size,
1158 COMPUTE_UNIT_GPU, gpu,
1161 pr_err("Error creating VCRAT for GPU (ID: 0x%x)\n",
1165 res = kfd_parse_crat_table(crat_image,
1166 &temp_topology_device_list,
1169 pr_err("Error parsing VCRAT for GPU (ID: 0x%x)\n",
1174 down_write(&topology_lock);
1175 kfd_topology_update_device_list(&temp_topology_device_list,
1176 &topology_device_list);
1178 /* Update the SYSFS tree, since we added another topology
1181 res = kfd_topology_update_sysfs();
1182 up_write(&topology_lock);
1185 sys_props.generation_count++;
1187 pr_err("Failed to update GPU (ID: 0x%x) to sysfs topology. res=%d\n",
1189 dev = kfd_assign_gpu(gpu);
1190 if (WARN_ON(!dev)) {
1196 dev->gpu_id = gpu_id;
1199 /* TODO: Move the following lines to function
1200 * kfd_add_non_crat_information
1203 /* Fill-in additional information that is not available in CRAT but
1204 * needed for the topology
1207 dev->gpu->kfd2kgd->get_cu_info(dev->gpu->kgd, &cu_info);
1208 dev->node_props.simd_arrays_per_engine =
1209 cu_info.num_shader_arrays_per_engine;
1211 dev->node_props.vendor_id = gpu->pdev->vendor;
1212 dev->node_props.device_id = gpu->pdev->device;
1213 dev->node_props.location_id = PCI_DEVID(gpu->pdev->bus->number,
1215 dev->node_props.max_engine_clk_fcompute =
1216 dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz(dev->gpu->kgd);
1217 dev->node_props.max_engine_clk_ccompute =
1218 cpufreq_quick_get_max(0) / 1000;
1219 dev->node_props.drm_render_minor =
1220 gpu->shared_resources.drm_render_minor;
1222 kfd_fill_mem_clk_max_info(dev);
1223 kfd_fill_iolink_non_crat_info(dev);
1225 switch (dev->gpu->device_info->asic_family) {
1229 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_PRE_1_0 <<
1230 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1231 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1235 case CHIP_POLARIS10:
1236 case CHIP_POLARIS11:
1237 pr_debug("Adding doorbell packet type capability\n");
1238 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_1_0 <<
1239 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1240 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1244 dev->node_props.capability |= ((HSA_CAP_DOORBELL_TYPE_2_0 <<
1245 HSA_CAP_DOORBELL_TYPE_TOTALBITS_SHIFT) &
1246 HSA_CAP_DOORBELL_TYPE_TOTALBITS_MASK);
1249 WARN(1, "Unexpected ASIC family %u",
1250 dev->gpu->device_info->asic_family);
1253 /* Fix errors in CZ CRAT.
1254 * simd_count: Carrizo CRAT reports wrong simd_count, probably
1255 * because it doesn't consider masked out CUs
1256 * max_waves_per_simd: Carrizo reports wrong max_waves_per_simd
1257 * capability flag: Carrizo CRAT doesn't report IOMMU flags
1259 if (dev->gpu->device_info->asic_family == CHIP_CARRIZO) {
1260 dev->node_props.simd_count =
1261 cu_info.simd_per_cu * cu_info.cu_active_number;
1262 dev->node_props.max_waves_per_simd = 10;
1263 dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
1266 kfd_debug_print_topology();
1269 kfd_notify_gpu_change(gpu_id, 1);
1271 kfd_destroy_crat_image(crat_image);
1275 int kfd_topology_remove_device(struct kfd_dev *gpu)
1277 struct kfd_topology_device *dev, *tmp;
1281 down_write(&topology_lock);
1283 list_for_each_entry_safe(dev, tmp, &topology_device_list, list)
1284 if (dev->gpu == gpu) {
1285 gpu_id = dev->gpu_id;
1286 kfd_remove_sysfs_node_entry(dev);
1287 kfd_release_topology_device(dev);
1288 sys_props.num_devices--;
1290 if (kfd_topology_update_sysfs() < 0)
1291 kfd_topology_release_sysfs();
1295 up_write(&topology_lock);
1298 kfd_notify_gpu_change(gpu_id, 0);
1303 /* kfd_topology_enum_kfd_devices - Enumerate through all devices in KFD
1304 * topology. If GPU device is found @idx, then valid kfd_dev pointer is
1305 * returned through @kdev
1306 * Return - 0: On success (@kdev will be NULL for non GPU nodes)
1307 * -1: If end of list
1309 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev)
1312 struct kfd_topology_device *top_dev;
1313 uint8_t device_idx = 0;
1316 down_read(&topology_lock);
1318 list_for_each_entry(top_dev, &topology_device_list, list) {
1319 if (device_idx == idx) {
1320 *kdev = top_dev->gpu;
1321 up_read(&topology_lock);
1328 up_read(&topology_lock);
1334 static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
1336 const struct cpuinfo_x86 *cpuinfo;
1337 int first_cpu_of_numa_node;
1339 if (!cpumask || cpumask == cpu_none_mask)
1341 first_cpu_of_numa_node = cpumask_first(cpumask);
1342 if (first_cpu_of_numa_node >= nr_cpu_ids)
1344 cpuinfo = &cpu_data(first_cpu_of_numa_node);
1346 return cpuinfo->apicid;
1349 /* kfd_numa_node_to_apic_id - Returns the APIC ID of the first logical processor
1350 * of the given NUMA node (numa_node_id)
1351 * Return -1 on failure
1353 int kfd_numa_node_to_apic_id(int numa_node_id)
1355 if (numa_node_id == -1) {
1356 pr_warn("Invalid NUMA Node. Use online CPU mask\n");
1357 return kfd_cpumask_to_apic_id(cpu_online_mask);
1359 return kfd_cpumask_to_apic_id(cpumask_of_node(numa_node_id));
1362 #if defined(CONFIG_DEBUG_FS)
1364 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data)
1366 struct kfd_topology_device *dev;
1370 down_read(&topology_lock);
1372 list_for_each_entry(dev, &topology_device_list, list) {
1378 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1379 r = dqm_debugfs_hqds(m, dev->gpu->dqm);
1384 up_read(&topology_lock);
1389 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data)
1391 struct kfd_topology_device *dev;
1395 down_read(&topology_lock);
1397 list_for_each_entry(dev, &topology_device_list, list) {
1403 seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
1404 r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets);
1409 up_read(&topology_lock);