| /* |
| * Copyright 2014 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| #include <linux/errno.h> |
| #include <linux/acpi.h> |
| #include <linux/hash.h> |
| #include <linux/cpufreq.h> |
| #include <linux/log2.h> |
| |
| #include "kfd_priv.h" |
| #include "kfd_crat.h" |
| #include "kfd_topology.h" |
| |
| static struct list_head topology_device_list; |
| static int topology_crat_parsed; |
| static struct kfd_system_properties sys_props; |
| |
| static DECLARE_RWSEM(topology_lock); |
| |
| struct kfd_dev *kfd_device_by_id(uint32_t gpu_id) |
| { |
| struct kfd_topology_device *top_dev; |
| struct kfd_dev *device = NULL; |
| |
| down_read(&topology_lock); |
| |
| list_for_each_entry(top_dev, &topology_device_list, list) |
| if (top_dev->gpu_id == gpu_id) { |
| device = top_dev->gpu; |
| break; |
| } |
| |
| up_read(&topology_lock); |
| |
| return device; |
| } |
| |
| struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev) |
| { |
| struct kfd_topology_device *top_dev; |
| struct kfd_dev *device = NULL; |
| |
| down_read(&topology_lock); |
| |
| list_for_each_entry(top_dev, &topology_device_list, list) |
| if (top_dev->gpu->pdev == pdev) { |
| device = top_dev->gpu; |
| break; |
| } |
| |
| up_read(&topology_lock); |
| |
| return device; |
| } |
| |
| static int kfd_topology_get_crat_acpi(void *crat_image, size_t *size) |
| { |
| struct acpi_table_header *crat_table; |
| acpi_status status; |
| |
| if (!size) |
| return -EINVAL; |
| |
| /* |
| * Fetch the CRAT table from ACPI |
| */ |
| status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table); |
| if (status == AE_NOT_FOUND) { |
| pr_warn("CRAT table not found\n"); |
| return -ENODATA; |
| } else if (ACPI_FAILURE(status)) { |
| const char *err = acpi_format_exception(status); |
| |
| pr_err("CRAT table error: %s\n", err); |
| return -EINVAL; |
| } |
| |
| if (*size >= crat_table->length && crat_image != NULL) |
| memcpy(crat_image, crat_table, crat_table->length); |
| |
| *size = crat_table->length; |
| |
| return 0; |
| } |
| |
| static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev, |
| struct crat_subtype_computeunit *cu) |
| { |
| BUG_ON(!dev); |
| BUG_ON(!cu); |
| |
| dev->node_props.cpu_cores_count = cu->num_cpu_cores; |
| dev->node_props.cpu_core_id_base = cu->processor_id_low; |
| if (cu->hsa_capability & CRAT_CU_FLAGS_IOMMU_PRESENT) |
| dev->node_props.capability |= HSA_CAP_ATS_PRESENT; |
| |
| pr_info("CU CPU: cores=%d id_base=%d\n", cu->num_cpu_cores, |
| cu->processor_id_low); |
| } |
| |
| static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev, |
| struct crat_subtype_computeunit *cu) |
| { |
| BUG_ON(!dev); |
| BUG_ON(!cu); |
| |
| dev->node_props.simd_id_base = cu->processor_id_low; |
| dev->node_props.simd_count = cu->num_simd_cores; |
| dev->node_props.lds_size_in_kb = cu->lds_size_in_kb; |
| dev->node_props.max_waves_per_simd = cu->max_waves_simd; |
| dev->node_props.wave_front_size = cu->wave_front_size; |
| dev->node_props.mem_banks_count = cu->num_banks; |
| dev->node_props.array_count = cu->num_arrays; |
| dev->node_props.cu_per_simd_array = cu->num_cu_per_array; |
| dev->node_props.simd_per_cu = cu->num_simd_per_cu; |
| dev->node_props.max_slots_scratch_cu = cu->max_slots_scatch_cu; |
| if (cu->hsa_capability & CRAT_CU_FLAGS_HOT_PLUGGABLE) |
| dev->node_props.capability |= HSA_CAP_HOT_PLUGGABLE; |
| pr_info("CU GPU: simds=%d id_base=%d\n", cu->num_simd_cores, |
| cu->processor_id_low); |
| } |
| |
| /* kfd_parse_subtype_cu is called when the topology mutex is already acquired */ |
| static int kfd_parse_subtype_cu(struct crat_subtype_computeunit *cu) |
| { |
| struct kfd_topology_device *dev; |
| int i = 0; |
| |
| BUG_ON(!cu); |
| |
| pr_info("Found CU entry in CRAT table with proximity_domain=%d caps=%x\n", |
| cu->proximity_domain, cu->hsa_capability); |
| list_for_each_entry(dev, &topology_device_list, list) { |
| if (cu->proximity_domain == i) { |
| if (cu->flags & CRAT_CU_FLAGS_CPU_PRESENT) |
| kfd_populated_cu_info_cpu(dev, cu); |
| |
| if (cu->flags & CRAT_CU_FLAGS_GPU_PRESENT) |
| kfd_populated_cu_info_gpu(dev, cu); |
| break; |
| } |
| i++; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * kfd_parse_subtype_mem is called when the topology mutex is |
| * already acquired |
| */ |
| static int kfd_parse_subtype_mem(struct crat_subtype_memory *mem) |
| { |
| struct kfd_mem_properties *props; |
| struct kfd_topology_device *dev; |
| int i = 0; |
| |
| BUG_ON(!mem); |
| |
| pr_info("Found memory entry in CRAT table with proximity_domain=%d\n", |
| mem->promixity_domain); |
| list_for_each_entry(dev, &topology_device_list, list) { |
| if (mem->promixity_domain == i) { |
| props = kfd_alloc_struct(props); |
| if (props == NULL) |
| return -ENOMEM; |
| |
| if (dev->node_props.cpu_cores_count == 0) |
| props->heap_type = HSA_MEM_HEAP_TYPE_FB_PRIVATE; |
| else |
| props->heap_type = HSA_MEM_HEAP_TYPE_SYSTEM; |
| |
| if (mem->flags & CRAT_MEM_FLAGS_HOT_PLUGGABLE) |
| props->flags |= HSA_MEM_FLAGS_HOT_PLUGGABLE; |
| if (mem->flags & CRAT_MEM_FLAGS_NON_VOLATILE) |
| props->flags |= HSA_MEM_FLAGS_NON_VOLATILE; |
| |
| props->size_in_bytes = |
| ((uint64_t)mem->length_high << 32) + |
| mem->length_low; |
| props->width = mem->width; |
| |
| dev->mem_bank_count++; |
| list_add_tail(&props->list, &dev->mem_props); |
| |
| break; |
| } |
| i++; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * kfd_parse_subtype_cache is called when the topology mutex |
| * is already acquired |
| */ |
| static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache) |
| { |
| struct kfd_cache_properties *props; |
| struct kfd_topology_device *dev; |
| uint32_t id; |
| |
| BUG_ON(!cache); |
| |
| id = cache->processor_id_low; |
| |
| pr_info("Found cache entry in CRAT table with processor_id=%d\n", id); |
| list_for_each_entry(dev, &topology_device_list, list) |
| if (id == dev->node_props.cpu_core_id_base || |
| id == dev->node_props.simd_id_base) { |
| props = kfd_alloc_struct(props); |
| if (props == NULL) |
| return -ENOMEM; |
| |
| props->processor_id_low = id; |
| props->cache_level = cache->cache_level; |
| props->cache_size = cache->cache_size; |
| props->cacheline_size = cache->cache_line_size; |
| props->cachelines_per_tag = cache->lines_per_tag; |
| props->cache_assoc = cache->associativity; |
| props->cache_latency = cache->cache_latency; |
| |
| if (cache->flags & CRAT_CACHE_FLAGS_DATA_CACHE) |
| props->cache_type |= HSA_CACHE_TYPE_DATA; |
| if (cache->flags & CRAT_CACHE_FLAGS_INST_CACHE) |
| props->cache_type |= HSA_CACHE_TYPE_INSTRUCTION; |
| if (cache->flags & CRAT_CACHE_FLAGS_CPU_CACHE) |
| props->cache_type |= HSA_CACHE_TYPE_CPU; |
| if (cache->flags & CRAT_CACHE_FLAGS_SIMD_CACHE) |
| props->cache_type |= HSA_CACHE_TYPE_HSACU; |
| |
| dev->cache_count++; |
| dev->node_props.caches_count++; |
| list_add_tail(&props->list, &dev->cache_props); |
| |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * kfd_parse_subtype_iolink is called when the topology mutex |
| * is already acquired |
| */ |
| static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink) |
| { |
| struct kfd_iolink_properties *props; |
| struct kfd_topology_device *dev; |
| uint32_t i = 0; |
| uint32_t id_from; |
| uint32_t id_to; |
| |
| BUG_ON(!iolink); |
| |
| id_from = iolink->proximity_domain_from; |
| id_to = iolink->proximity_domain_to; |
| |
| pr_info("Found IO link entry in CRAT table with id_from=%d\n", id_from); |
| list_for_each_entry(dev, &topology_device_list, list) { |
| if (id_from == i) { |
| props = kfd_alloc_struct(props); |
| if (props == NULL) |
| return -ENOMEM; |
| |
| props->node_from = id_from; |
| props->node_to = id_to; |
| props->ver_maj = iolink->version_major; |
| props->ver_min = iolink->version_minor; |
| |
| /* |
| * weight factor (derived from CDIR), currently always 1 |
| */ |
| props->weight = 1; |
| |
| props->min_latency = iolink->minimum_latency; |
| props->max_latency = iolink->maximum_latency; |
| props->min_bandwidth = iolink->minimum_bandwidth_mbs; |
| props->max_bandwidth = iolink->maximum_bandwidth_mbs; |
| props->rec_transfer_size = |
| iolink->recommended_transfer_size; |
| |
| dev->io_link_count++; |
| dev->node_props.io_links_count++; |
| list_add_tail(&props->list, &dev->io_link_props); |
| |
| break; |
| } |
| i++; |
| } |
| |
| return 0; |
| } |
| |
| static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr) |
| { |
| struct crat_subtype_computeunit *cu; |
| struct crat_subtype_memory *mem; |
| struct crat_subtype_cache *cache; |
| struct crat_subtype_iolink *iolink; |
| int ret = 0; |
| |
| BUG_ON(!sub_type_hdr); |
| |
| switch (sub_type_hdr->type) { |
| case CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY: |
| cu = (struct crat_subtype_computeunit *)sub_type_hdr; |
| ret = kfd_parse_subtype_cu(cu); |
| break; |
| case CRAT_SUBTYPE_MEMORY_AFFINITY: |
| mem = (struct crat_subtype_memory *)sub_type_hdr; |
| ret = kfd_parse_subtype_mem(mem); |
| break; |
| case CRAT_SUBTYPE_CACHE_AFFINITY: |
| cache = (struct crat_subtype_cache *)sub_type_hdr; |
| ret = kfd_parse_subtype_cache(cache); |
| break; |
| case CRAT_SUBTYPE_TLB_AFFINITY: |
| /* |
| * For now, nothing to do here |
| */ |
| pr_info("Found TLB entry in CRAT table (not processing)\n"); |
| break; |
| case CRAT_SUBTYPE_CCOMPUTE_AFFINITY: |
| /* |
| * For now, nothing to do here |
| */ |
| pr_info("Found CCOMPUTE entry in CRAT table (not processing)\n"); |
| break; |
| case CRAT_SUBTYPE_IOLINK_AFFINITY: |
| iolink = (struct crat_subtype_iolink *)sub_type_hdr; |
| ret = kfd_parse_subtype_iolink(iolink); |
| break; |
| default: |
| pr_warn("Unknown subtype (%d) in CRAT\n", |
| sub_type_hdr->type); |
| } |
| |
| return ret; |
| } |
| |
| static void kfd_release_topology_device(struct kfd_topology_device *dev) |
| { |
| struct kfd_mem_properties *mem; |
| struct kfd_cache_properties *cache; |
| struct kfd_iolink_properties *iolink; |
| |
| BUG_ON(!dev); |
| |
| list_del(&dev->list); |
| |
| while (dev->mem_props.next != &dev->mem_props) { |
| mem = container_of(dev->mem_props.next, |
| struct kfd_mem_properties, list); |
| list_del(&mem->list); |
| kfree(mem); |
| } |
| |
| while (dev->cache_props.next != &dev->cache_props) { |
| cache = container_of(dev->cache_props.next, |
| struct kfd_cache_properties, list); |
| list_del(&cache->list); |
| kfree(cache); |
| } |
| |
| while (dev->io_link_props.next != &dev->io_link_props) { |
| iolink = container_of(dev->io_link_props.next, |
| struct kfd_iolink_properties, list); |
| list_del(&iolink->list); |
| kfree(iolink); |
| } |
| |
| kfree(dev); |
| |
| sys_props.num_devices--; |
| } |
| |
| static void kfd_release_live_view(void) |
| { |
| struct kfd_topology_device *dev; |
| |
| while (topology_device_list.next != &topology_device_list) { |
| dev = container_of(topology_device_list.next, |
| struct kfd_topology_device, list); |
| kfd_release_topology_device(dev); |
| } |
| |
| memset(&sys_props, 0, sizeof(sys_props)); |
| } |
| |
| static struct kfd_topology_device *kfd_create_topology_device(void) |
| { |
| struct kfd_topology_device *dev; |
| |
| dev = kfd_alloc_struct(dev); |
| if (dev == NULL) { |
| pr_err("No memory to allocate a topology device"); |
| return NULL; |
| } |
| |
| INIT_LIST_HEAD(&dev->mem_props); |
| INIT_LIST_HEAD(&dev->cache_props); |
| INIT_LIST_HEAD(&dev->io_link_props); |
| |
| list_add_tail(&dev->list, &topology_device_list); |
| sys_props.num_devices++; |
| |
| return dev; |
| } |
| |
| static int kfd_parse_crat_table(void *crat_image) |
| { |
| struct kfd_topology_device *top_dev; |
| struct crat_subtype_generic *sub_type_hdr; |
| uint16_t node_id; |
| int ret; |
| struct crat_header *crat_table = (struct crat_header *)crat_image; |
| uint16_t num_nodes; |
| uint32_t image_len; |
| |
| if (!crat_image) |
| return -EINVAL; |
| |
| num_nodes = crat_table->num_domains; |
| image_len = crat_table->length; |
| |
| pr_info("Parsing CRAT table with %d nodes\n", num_nodes); |
| |
| for (node_id = 0; node_id < num_nodes; node_id++) { |
| top_dev = kfd_create_topology_device(); |
| if (!top_dev) { |
| kfd_release_live_view(); |
| return -ENOMEM; |
| } |
| } |
| |
| sys_props.platform_id = |
| (*((uint64_t *)crat_table->oem_id)) & CRAT_OEMID_64BIT_MASK; |
| sys_props.platform_oem = *((uint64_t *)crat_table->oem_table_id); |
| sys_props.platform_rev = crat_table->revision; |
| |
| sub_type_hdr = (struct crat_subtype_generic *)(crat_table+1); |
| while ((char *)sub_type_hdr + sizeof(struct crat_subtype_generic) < |
| ((char *)crat_image) + image_len) { |
| if (sub_type_hdr->flags & CRAT_SUBTYPE_FLAGS_ENABLED) { |
| ret = kfd_parse_subtype(sub_type_hdr); |
| if (ret != 0) { |
| kfd_release_live_view(); |
| return ret; |
| } |
| } |
| |
| sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + |
| sub_type_hdr->length); |
| } |
| |
| sys_props.generation_count++; |
| topology_crat_parsed = 1; |
| |
| return 0; |
| } |
| |
| |
| #define sysfs_show_gen_prop(buffer, fmt, ...) \ |
| snprintf(buffer, PAGE_SIZE, "%s"fmt, buffer, __VA_ARGS__) |
| #define sysfs_show_32bit_prop(buffer, name, value) \ |
| sysfs_show_gen_prop(buffer, "%s %u\n", name, value) |
| #define sysfs_show_64bit_prop(buffer, name, value) \ |
| sysfs_show_gen_prop(buffer, "%s %llu\n", name, value) |
| #define sysfs_show_32bit_val(buffer, value) \ |
| sysfs_show_gen_prop(buffer, "%u\n", value) |
| #define sysfs_show_str_val(buffer, value) \ |
| sysfs_show_gen_prop(buffer, "%s\n", value) |
| |
| static ssize_t sysprops_show(struct kobject *kobj, struct attribute *attr, |
| char *buffer) |
| { |
| ssize_t ret; |
| |
| /* Making sure that the buffer is an empty string */ |
| buffer[0] = 0; |
| |
| if (attr == &sys_props.attr_genid) { |
| ret = sysfs_show_32bit_val(buffer, sys_props.generation_count); |
| } else if (attr == &sys_props.attr_props) { |
| sysfs_show_64bit_prop(buffer, "platform_oem", |
| sys_props.platform_oem); |
| sysfs_show_64bit_prop(buffer, "platform_id", |
| sys_props.platform_id); |
| ret = sysfs_show_64bit_prop(buffer, "platform_rev", |
| sys_props.platform_rev); |
| } else { |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static const struct sysfs_ops sysprops_ops = { |
| .show = sysprops_show, |
| }; |
| |
| static struct kobj_type sysprops_type = { |
| .sysfs_ops = &sysprops_ops, |
| }; |
| |
| static ssize_t iolink_show(struct kobject *kobj, struct attribute *attr, |
| char *buffer) |
| { |
| ssize_t ret; |
| struct kfd_iolink_properties *iolink; |
| |
| /* Making sure that the buffer is an empty string */ |
| buffer[0] = 0; |
| |
| iolink = container_of(attr, struct kfd_iolink_properties, attr); |
| sysfs_show_32bit_prop(buffer, "type", iolink->iolink_type); |
| sysfs_show_32bit_prop(buffer, "version_major", iolink->ver_maj); |
| sysfs_show_32bit_prop(buffer, "version_minor", iolink->ver_min); |
| sysfs_show_32bit_prop(buffer, "node_from", iolink->node_from); |
| sysfs_show_32bit_prop(buffer, "node_to", iolink->node_to); |
| sysfs_show_32bit_prop(buffer, "weight", iolink->weight); |
| sysfs_show_32bit_prop(buffer, "min_latency", iolink->min_latency); |
| sysfs_show_32bit_prop(buffer, "max_latency", iolink->max_latency); |
| sysfs_show_32bit_prop(buffer, "min_bandwidth", iolink->min_bandwidth); |
| sysfs_show_32bit_prop(buffer, "max_bandwidth", iolink->max_bandwidth); |
| sysfs_show_32bit_prop(buffer, "recommended_transfer_size", |
| iolink->rec_transfer_size); |
| ret = sysfs_show_32bit_prop(buffer, "flags", iolink->flags); |
| |
| return ret; |
| } |
| |
| static const struct sysfs_ops iolink_ops = { |
| .show = iolink_show, |
| }; |
| |
| static struct kobj_type iolink_type = { |
| .sysfs_ops = &iolink_ops, |
| }; |
| |
| static ssize_t mem_show(struct kobject *kobj, struct attribute *attr, |
| char *buffer) |
| { |
| ssize_t ret; |
| struct kfd_mem_properties *mem; |
| |
| /* Making sure that the buffer is an empty string */ |
| buffer[0] = 0; |
| |
| mem = container_of(attr, struct kfd_mem_properties, attr); |
| sysfs_show_32bit_prop(buffer, "heap_type", mem->heap_type); |
| sysfs_show_64bit_prop(buffer, "size_in_bytes", mem->size_in_bytes); |
| sysfs_show_32bit_prop(buffer, "flags", mem->flags); |
| sysfs_show_32bit_prop(buffer, "width", mem->width); |
| ret = sysfs_show_32bit_prop(buffer, "mem_clk_max", mem->mem_clk_max); |
| |
| return ret; |
| } |
| |
| static const struct sysfs_ops mem_ops = { |
| .show = mem_show, |
| }; |
| |
| static struct kobj_type mem_type = { |
| .sysfs_ops = &mem_ops, |
| }; |
| |
| static ssize_t kfd_cache_show(struct kobject *kobj, struct attribute *attr, |
| char *buffer) |
| { |
| ssize_t ret; |
| uint32_t i; |
| struct kfd_cache_properties *cache; |
| |
| /* Making sure that the buffer is an empty string */ |
| buffer[0] = 0; |
| |
| cache = container_of(attr, struct kfd_cache_properties, attr); |
| sysfs_show_32bit_prop(buffer, "processor_id_low", |
| cache->processor_id_low); |
| sysfs_show_32bit_prop(buffer, "level", cache->cache_level); |
| sysfs_show_32bit_prop(buffer, "size", cache->cache_size); |
| sysfs_show_32bit_prop(buffer, "cache_line_size", cache->cacheline_size); |
| sysfs_show_32bit_prop(buffer, "cache_lines_per_tag", |
| cache->cachelines_per_tag); |
| sysfs_show_32bit_prop(buffer, "association", cache->cache_assoc); |
| sysfs_show_32bit_prop(buffer, "latency", cache->cache_latency); |
| sysfs_show_32bit_prop(buffer, "type", cache->cache_type); |
| snprintf(buffer, PAGE_SIZE, "%ssibling_map ", buffer); |
| for (i = 0; i < KFD_TOPOLOGY_CPU_SIBLINGS; i++) |
| ret = snprintf(buffer, PAGE_SIZE, "%s%d%s", |
| buffer, cache->sibling_map[i], |
| (i == KFD_TOPOLOGY_CPU_SIBLINGS-1) ? |
| "\n" : ","); |
| |
| return ret; |
| } |
| |
| static const struct sysfs_ops cache_ops = { |
| .show = kfd_cache_show, |
| }; |
| |
| static struct kobj_type cache_type = { |
| .sysfs_ops = &cache_ops, |
| }; |
| |
| static ssize_t node_show(struct kobject *kobj, struct attribute *attr, |
| char *buffer) |
| { |
| struct kfd_topology_device *dev; |
| char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE]; |
| uint32_t i; |
| uint32_t log_max_watch_addr; |
| |
| /* Making sure that the buffer is an empty string */ |
| buffer[0] = 0; |
| |
| if (strcmp(attr->name, "gpu_id") == 0) { |
| dev = container_of(attr, struct kfd_topology_device, |
| attr_gpuid); |
| return sysfs_show_32bit_val(buffer, dev->gpu_id); |
| } |
| |
| if (strcmp(attr->name, "name") == 0) { |
| dev = container_of(attr, struct kfd_topology_device, |
| attr_name); |
| for (i = 0; i < KFD_TOPOLOGY_PUBLIC_NAME_SIZE; i++) { |
| public_name[i] = |
| (char)dev->node_props.marketing_name[i]; |
| if (dev->node_props.marketing_name[i] == 0) |
| break; |
| } |
| public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE-1] = 0x0; |
| return sysfs_show_str_val(buffer, public_name); |
| } |
| |
| dev = container_of(attr, struct kfd_topology_device, |
| attr_props); |
| sysfs_show_32bit_prop(buffer, "cpu_cores_count", |
| dev->node_props.cpu_cores_count); |
| sysfs_show_32bit_prop(buffer, "simd_count", |
| dev->node_props.simd_count); |
| |
| if (dev->mem_bank_count < dev->node_props.mem_banks_count) { |
| pr_warn("kfd: mem_banks_count truncated from %d to %d\n", |
| dev->node_props.mem_banks_count, |
| dev->mem_bank_count); |
| sysfs_show_32bit_prop(buffer, "mem_banks_count", |
| dev->mem_bank_count); |
| } else { |
| sysfs_show_32bit_prop(buffer, "mem_banks_count", |
| dev->node_props.mem_banks_count); |
| } |
| |
| sysfs_show_32bit_prop(buffer, "caches_count", |
| dev->node_props.caches_count); |
| sysfs_show_32bit_prop(buffer, "io_links_count", |
| dev->node_props.io_links_count); |
| sysfs_show_32bit_prop(buffer, "cpu_core_id_base", |
| dev->node_props.cpu_core_id_base); |
| sysfs_show_32bit_prop(buffer, "simd_id_base", |
| dev->node_props.simd_id_base); |
| sysfs_show_32bit_prop(buffer, "capability", |
| dev->node_props.capability); |
| sysfs_show_32bit_prop(buffer, "max_waves_per_simd", |
| dev->node_props.max_waves_per_simd); |
| sysfs_show_32bit_prop(buffer, "lds_size_in_kb", |
| dev->node_props.lds_size_in_kb); |
| sysfs_show_32bit_prop(buffer, "gds_size_in_kb", |
| dev->node_props.gds_size_in_kb); |
| sysfs_show_32bit_prop(buffer, "wave_front_size", |
| dev->node_props.wave_front_size); |
| sysfs_show_32bit_prop(buffer, "array_count", |
| dev->node_props.array_count); |
| sysfs_show_32bit_prop(buffer, "simd_arrays_per_engine", |
| dev->node_props.simd_arrays_per_engine); |
| sysfs_show_32bit_prop(buffer, "cu_per_simd_array", |
| dev->node_props.cu_per_simd_array); |
| sysfs_show_32bit_prop(buffer, "simd_per_cu", |
| dev->node_props.simd_per_cu); |
| sysfs_show_32bit_prop(buffer, "max_slots_scratch_cu", |
| dev->node_props.max_slots_scratch_cu); |
| sysfs_show_32bit_prop(buffer, "vendor_id", |
| dev->node_props.vendor_id); |
| sysfs_show_32bit_prop(buffer, "device_id", |
| dev->node_props.device_id); |
| sysfs_show_32bit_prop(buffer, "location_id", |
| dev->node_props.location_id); |
| |
| if (dev->gpu) { |
| log_max_watch_addr = |
| __ilog2_u32(dev->gpu->device_info->num_of_watch_points); |
| |
| if (log_max_watch_addr) { |
| dev->node_props.capability |= |
| HSA_CAP_WATCH_POINTS_SUPPORTED; |
| |
| dev->node_props.capability |= |
| ((log_max_watch_addr << |
| HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT) & |
| HSA_CAP_WATCH_POINTS_TOTALBITS_MASK); |
| } |
| |
| sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute", |
| dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz( |
| dev->gpu->kgd)); |
| |
| sysfs_show_64bit_prop(buffer, "local_mem_size", |
| (unsigned long long int) 0); |
| |
| sysfs_show_32bit_prop(buffer, "fw_version", |
| dev->gpu->kfd2kgd->get_fw_version( |
| dev->gpu->kgd, |
| KGD_ENGINE_MEC1)); |
| } |
| |
| return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute", |
| cpufreq_quick_get_max(0)/1000); |
| } |
| |
| static const struct sysfs_ops node_ops = { |
| .show = node_show, |
| }; |
| |
| static struct kobj_type node_type = { |
| .sysfs_ops = &node_ops, |
| }; |
| |
| static void kfd_remove_sysfs_file(struct kobject *kobj, struct attribute *attr) |
| { |
| sysfs_remove_file(kobj, attr); |
| kobject_del(kobj); |
| kobject_put(kobj); |
| } |
| |
| static void kfd_remove_sysfs_node_entry(struct kfd_topology_device *dev) |
| { |
| struct kfd_iolink_properties *iolink; |
| struct kfd_cache_properties *cache; |
| struct kfd_mem_properties *mem; |
| |
| BUG_ON(!dev); |
| |
| if (dev->kobj_iolink) { |
| list_for_each_entry(iolink, &dev->io_link_props, list) |
| if (iolink->kobj) { |
| kfd_remove_sysfs_file(iolink->kobj, |
| &iolink->attr); |
| iolink->kobj = NULL; |
| } |
| kobject_del(dev->kobj_iolink); |
| kobject_put(dev->kobj_iolink); |
| dev->kobj_iolink = NULL; |
| } |
| |
| if (dev->kobj_cache) { |
| list_for_each_entry(cache, &dev->cache_props, list) |
| if (cache->kobj) { |
| kfd_remove_sysfs_file(cache->kobj, |
| &cache->attr); |
| cache->kobj = NULL; |
| } |
| kobject_del(dev->kobj_cache); |
| kobject_put(dev->kobj_cache); |
| dev->kobj_cache = NULL; |
| } |
| |
| if (dev->kobj_mem) { |
| list_for_each_entry(mem, &dev->mem_props, list) |
| if (mem->kobj) { |
| kfd_remove_sysfs_file(mem->kobj, &mem->attr); |
| mem->kobj = NULL; |
| } |
| kobject_del(dev->kobj_mem); |
| kobject_put(dev->kobj_mem); |
| dev->kobj_mem = NULL; |
| } |
| |
| if (dev->kobj_node) { |
| sysfs_remove_file(dev->kobj_node, &dev->attr_gpuid); |
| sysfs_remove_file(dev->kobj_node, &dev->attr_name); |
| sysfs_remove_file(dev->kobj_node, &dev->attr_props); |
| kobject_del(dev->kobj_node); |
| kobject_put(dev->kobj_node); |
| dev->kobj_node = NULL; |
| } |
| } |
| |
| static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev, |
| uint32_t id) |
| { |
| struct kfd_iolink_properties *iolink; |
| struct kfd_cache_properties *cache; |
| struct kfd_mem_properties *mem; |
| int ret; |
| uint32_t i; |
| |
| BUG_ON(!dev); |
| |
| /* |
| * Creating the sysfs folders |
| */ |
| BUG_ON(dev->kobj_node); |
| dev->kobj_node = kfd_alloc_struct(dev->kobj_node); |
| if (!dev->kobj_node) |
| return -ENOMEM; |
| |
| ret = kobject_init_and_add(dev->kobj_node, &node_type, |
| sys_props.kobj_nodes, "%d", id); |
| if (ret < 0) |
| return ret; |
| |
| dev->kobj_mem = kobject_create_and_add("mem_banks", dev->kobj_node); |
| if (!dev->kobj_mem) |
| return -ENOMEM; |
| |
| dev->kobj_cache = kobject_create_and_add("caches", dev->kobj_node); |
| if (!dev->kobj_cache) |
| return -ENOMEM; |
| |
| dev->kobj_iolink = kobject_create_and_add("io_links", dev->kobj_node); |
| if (!dev->kobj_iolink) |
| return -ENOMEM; |
| |
| /* |
| * Creating sysfs files for node properties |
| */ |
| dev->attr_gpuid.name = "gpu_id"; |
| dev->attr_gpuid.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&dev->attr_gpuid); |
| dev->attr_name.name = "name"; |
| dev->attr_name.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&dev->attr_name); |
| dev->attr_props.name = "properties"; |
| dev->attr_props.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&dev->attr_props); |
| ret = sysfs_create_file(dev->kobj_node, &dev->attr_gpuid); |
| if (ret < 0) |
| return ret; |
| ret = sysfs_create_file(dev->kobj_node, &dev->attr_name); |
| if (ret < 0) |
| return ret; |
| ret = sysfs_create_file(dev->kobj_node, &dev->attr_props); |
| if (ret < 0) |
| return ret; |
| |
| i = 0; |
| list_for_each_entry(mem, &dev->mem_props, list) { |
| mem->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); |
| if (!mem->kobj) |
| return -ENOMEM; |
| ret = kobject_init_and_add(mem->kobj, &mem_type, |
| dev->kobj_mem, "%d", i); |
| if (ret < 0) |
| return ret; |
| |
| mem->attr.name = "properties"; |
| mem->attr.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&mem->attr); |
| ret = sysfs_create_file(mem->kobj, &mem->attr); |
| if (ret < 0) |
| return ret; |
| i++; |
| } |
| |
| i = 0; |
| list_for_each_entry(cache, &dev->cache_props, list) { |
| cache->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); |
| if (!cache->kobj) |
| return -ENOMEM; |
| ret = kobject_init_and_add(cache->kobj, &cache_type, |
| dev->kobj_cache, "%d", i); |
| if (ret < 0) |
| return ret; |
| |
| cache->attr.name = "properties"; |
| cache->attr.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&cache->attr); |
| ret = sysfs_create_file(cache->kobj, &cache->attr); |
| if (ret < 0) |
| return ret; |
| i++; |
| } |
| |
| i = 0; |
| list_for_each_entry(iolink, &dev->io_link_props, list) { |
| iolink->kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); |
| if (!iolink->kobj) |
| return -ENOMEM; |
| ret = kobject_init_and_add(iolink->kobj, &iolink_type, |
| dev->kobj_iolink, "%d", i); |
| if (ret < 0) |
| return ret; |
| |
| iolink->attr.name = "properties"; |
| iolink->attr.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&iolink->attr); |
| ret = sysfs_create_file(iolink->kobj, &iolink->attr); |
| if (ret < 0) |
| return ret; |
| i++; |
| } |
| |
| return 0; |
| } |
| |
| static int kfd_build_sysfs_node_tree(void) |
| { |
| struct kfd_topology_device *dev; |
| int ret; |
| uint32_t i = 0; |
| |
| list_for_each_entry(dev, &topology_device_list, list) { |
| ret = kfd_build_sysfs_node_entry(dev, i); |
| if (ret < 0) |
| return ret; |
| i++; |
| } |
| |
| return 0; |
| } |
| |
| static void kfd_remove_sysfs_node_tree(void) |
| { |
| struct kfd_topology_device *dev; |
| |
| list_for_each_entry(dev, &topology_device_list, list) |
| kfd_remove_sysfs_node_entry(dev); |
| } |
| |
| static int kfd_topology_update_sysfs(void) |
| { |
| int ret; |
| |
| pr_info("Creating topology SYSFS entries\n"); |
| if (sys_props.kobj_topology == NULL) { |
| sys_props.kobj_topology = |
| kfd_alloc_struct(sys_props.kobj_topology); |
| if (!sys_props.kobj_topology) |
| return -ENOMEM; |
| |
| ret = kobject_init_and_add(sys_props.kobj_topology, |
| &sysprops_type, &kfd_device->kobj, |
| "topology"); |
| if (ret < 0) |
| return ret; |
| |
| sys_props.kobj_nodes = kobject_create_and_add("nodes", |
| sys_props.kobj_topology); |
| if (!sys_props.kobj_nodes) |
| return -ENOMEM; |
| |
| sys_props.attr_genid.name = "generation_id"; |
| sys_props.attr_genid.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&sys_props.attr_genid); |
| ret = sysfs_create_file(sys_props.kobj_topology, |
| &sys_props.attr_genid); |
| if (ret < 0) |
| return ret; |
| |
| sys_props.attr_props.name = "system_properties"; |
| sys_props.attr_props.mode = KFD_SYSFS_FILE_MODE; |
| sysfs_attr_init(&sys_props.attr_props); |
| ret = sysfs_create_file(sys_props.kobj_topology, |
| &sys_props.attr_props); |
| if (ret < 0) |
| return ret; |
| } |
| |
| kfd_remove_sysfs_node_tree(); |
| |
| return kfd_build_sysfs_node_tree(); |
| } |
| |
| static void kfd_topology_release_sysfs(void) |
| { |
| kfd_remove_sysfs_node_tree(); |
| if (sys_props.kobj_topology) { |
| sysfs_remove_file(sys_props.kobj_topology, |
| &sys_props.attr_genid); |
| sysfs_remove_file(sys_props.kobj_topology, |
| &sys_props.attr_props); |
| if (sys_props.kobj_nodes) { |
| kobject_del(sys_props.kobj_nodes); |
| kobject_put(sys_props.kobj_nodes); |
| sys_props.kobj_nodes = NULL; |
| } |
| kobject_del(sys_props.kobj_topology); |
| kobject_put(sys_props.kobj_topology); |
| sys_props.kobj_topology = NULL; |
| } |
| } |
| |
| int kfd_topology_init(void) |
| { |
| void *crat_image = NULL; |
| size_t image_size = 0; |
| int ret; |
| |
| /* |
| * Initialize the head for the topology device list |
| */ |
| INIT_LIST_HEAD(&topology_device_list); |
| init_rwsem(&topology_lock); |
| topology_crat_parsed = 0; |
| |
| memset(&sys_props, 0, sizeof(sys_props)); |
| |
| /* |
| * Get the CRAT image from the ACPI |
| */ |
| ret = kfd_topology_get_crat_acpi(crat_image, &image_size); |
| if (ret == 0 && image_size > 0) { |
| pr_info("Found CRAT image with size=%zd\n", image_size); |
| crat_image = kmalloc(image_size, GFP_KERNEL); |
| if (!crat_image) { |
| ret = -ENOMEM; |
| pr_err("No memory for allocating CRAT image\n"); |
| goto err; |
| } |
| ret = kfd_topology_get_crat_acpi(crat_image, &image_size); |
| |
| if (ret == 0) { |
| down_write(&topology_lock); |
| ret = kfd_parse_crat_table(crat_image); |
| if (ret == 0) |
| ret = kfd_topology_update_sysfs(); |
| up_write(&topology_lock); |
| } else { |
| pr_err("Couldn't get CRAT table size from ACPI\n"); |
| } |
| kfree(crat_image); |
| } else if (ret == -ENODATA) { |
| ret = 0; |
| } else { |
| pr_err("Couldn't get CRAT table size from ACPI\n"); |
| } |
| |
| err: |
| pr_info("Finished initializing topology ret=%d\n", ret); |
| return ret; |
| } |
| |
| void kfd_topology_shutdown(void) |
| { |
| kfd_topology_release_sysfs(); |
| kfd_release_live_view(); |
| } |
| |
| static void kfd_debug_print_topology(void) |
| { |
| struct kfd_topology_device *dev; |
| uint32_t i = 0; |
| |
| pr_info("DEBUG PRINT OF TOPOLOGY:"); |
| list_for_each_entry(dev, &topology_device_list, list) { |
| pr_info("Node: %d\n", i); |
| pr_info("\tGPU assigned: %s\n", (dev->gpu ? "yes" : "no")); |
| pr_info("\tCPU count: %d\n", dev->node_props.cpu_cores_count); |
| pr_info("\tSIMD count: %d", dev->node_props.simd_count); |
| i++; |
| } |
| } |
| |
| static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) |
| { |
| uint32_t hashout; |
| uint32_t buf[7]; |
| int i; |
| |
| if (!gpu) |
| return 0; |
| |
| buf[0] = gpu->pdev->devfn; |
| buf[1] = gpu->pdev->subsystem_vendor; |
| buf[2] = gpu->pdev->subsystem_device; |
| buf[3] = gpu->pdev->device; |
| buf[4] = gpu->pdev->bus->number; |
| buf[5] = (uint32_t)(gpu->kfd2kgd->get_vmem_size(gpu->kgd) |
| & 0xffffffff); |
| buf[6] = (uint32_t)(gpu->kfd2kgd->get_vmem_size(gpu->kgd) >> 32); |
| |
| for (i = 0, hashout = 0; i < 7; i++) |
| hashout ^= hash_32(buf[i], KFD_GPU_ID_HASH_WIDTH); |
| |
| return hashout; |
| } |
| |
| static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) |
| { |
| struct kfd_topology_device *dev; |
| struct kfd_topology_device *out_dev = NULL; |
| |
| BUG_ON(!gpu); |
| |
| list_for_each_entry(dev, &topology_device_list, list) |
| if (dev->gpu == NULL && dev->node_props.simd_count > 0) { |
| dev->gpu = gpu; |
| out_dev = dev; |
| break; |
| } |
| |
| return out_dev; |
| } |
| |
| static void kfd_notify_gpu_change(uint32_t gpu_id, int arrival) |
| { |
| /* |
| * TODO: Generate an event for thunk about the arrival/removal |
| * of the GPU |
| */ |
| } |
| |
| int kfd_topology_add_device(struct kfd_dev *gpu) |
| { |
| uint32_t gpu_id; |
| struct kfd_topology_device *dev; |
| int res; |
| |
| BUG_ON(!gpu); |
| |
| gpu_id = kfd_generate_gpu_id(gpu); |
| |
| pr_debug("kfd: Adding new GPU (ID: 0x%x) to topology\n", gpu_id); |
| |
| down_write(&topology_lock); |
| /* |
| * Try to assign the GPU to existing topology device (generated from |
| * CRAT table |
| */ |
| dev = kfd_assign_gpu(gpu); |
| if (!dev) { |
| pr_info("GPU was not found in the current topology. Extending.\n"); |
| kfd_debug_print_topology(); |
| dev = kfd_create_topology_device(); |
| if (!dev) { |
| res = -ENOMEM; |
| goto err; |
| } |
| dev->gpu = gpu; |
| |
| /* |
| * TODO: Make a call to retrieve topology information from the |
| * GPU vBIOS |
| */ |
| |
| /* |
| * Update the SYSFS tree, since we added another topology device |
| */ |
| if (kfd_topology_update_sysfs() < 0) |
| kfd_topology_release_sysfs(); |
| |
| } |
| |
| dev->gpu_id = gpu_id; |
| gpu->id = gpu_id; |
| dev->node_props.vendor_id = gpu->pdev->vendor; |
| dev->node_props.device_id = gpu->pdev->device; |
| dev->node_props.location_id = (gpu->pdev->bus->number << 24) + |
| (gpu->pdev->devfn & 0xffffff); |
| /* |
| * TODO: Retrieve max engine clock values from KGD |
| */ |
| |
| res = 0; |
| |
| err: |
| up_write(&topology_lock); |
| |
| if (res == 0) |
| kfd_notify_gpu_change(gpu_id, 1); |
| |
| return res; |
| } |
| |
| int kfd_topology_remove_device(struct kfd_dev *gpu) |
| { |
| struct kfd_topology_device *dev; |
| uint32_t gpu_id; |
| int res = -ENODEV; |
| |
| BUG_ON(!gpu); |
| |
| down_write(&topology_lock); |
| |
| list_for_each_entry(dev, &topology_device_list, list) |
| if (dev->gpu == gpu) { |
| gpu_id = dev->gpu_id; |
| kfd_remove_sysfs_node_entry(dev); |
| kfd_release_topology_device(dev); |
| res = 0; |
| if (kfd_topology_update_sysfs() < 0) |
| kfd_topology_release_sysfs(); |
| break; |
| } |
| |
| up_write(&topology_lock); |
| |
| if (res == 0) |
| kfd_notify_gpu_change(gpu_id, 0); |
| |
| return res; |
| } |
| |
| /* |
| * When idx is out of bounds, the function will return NULL |
| */ |
| struct kfd_dev *kfd_topology_enum_kfd_devices(uint8_t idx) |
| { |
| |
| struct kfd_topology_device *top_dev; |
| struct kfd_dev *device = NULL; |
| uint8_t device_idx = 0; |
| |
| down_read(&topology_lock); |
| |
| list_for_each_entry(top_dev, &topology_device_list, list) { |
| if (device_idx == idx) { |
| device = top_dev->gpu; |
| break; |
| } |
| |
| device_idx++; |
| } |
| |
| up_read(&topology_lock); |
| |
| return device; |
| |
| } |