2014-07-17 02:22:32 +08:00
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/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/errno.h>
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#include <linux/acpi.h>
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#include <linux/hash.h>
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#include <linux/cpufreq.h>
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2014-10-13 21:35:12 +08:00
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#include <linux/log2.h>
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2014-07-17 02:22:32 +08:00
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#include "kfd_priv.h"
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#include "kfd_crat.h"
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#include "kfd_topology.h"
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static struct list_head topology_device_list;
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static int topology_crat_parsed;
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static struct kfd_system_properties sys_props;
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static DECLARE_RWSEM(topology_lock);
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struct kfd_dev *kfd_device_by_id(uint32_t gpu_id)
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{
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struct kfd_topology_device *top_dev;
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struct kfd_dev *device = NULL;
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down_read(&topology_lock);
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list_for_each_entry(top_dev, &topology_device_list, list)
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if (top_dev->gpu_id == gpu_id) {
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device = top_dev->gpu;
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break;
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}
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up_read(&topology_lock);
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return device;
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}
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struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
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{
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struct kfd_topology_device *top_dev;
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struct kfd_dev *device = NULL;
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down_read(&topology_lock);
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list_for_each_entry(top_dev, &topology_device_list, list)
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if (top_dev->gpu->pdev == pdev) {
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device = top_dev->gpu;
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break;
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}
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up_read(&topology_lock);
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return device;
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}
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static int kfd_topology_get_crat_acpi(void *crat_image, size_t *size)
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{
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struct acpi_table_header *crat_table;
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acpi_status status;
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if (!size)
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return -EINVAL;
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/*
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* Fetch the CRAT table from ACPI
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*/
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status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table);
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if (status == AE_NOT_FOUND) {
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pr_warn("CRAT table not found\n");
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return -ENODATA;
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} else if (ACPI_FAILURE(status)) {
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const char *err = acpi_format_exception(status);
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pr_err("CRAT table error: %s\n", err);
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return -EINVAL;
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}
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2014-11-20 21:41:33 +08:00
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if (*size >= crat_table->length && crat_image != NULL)
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2014-07-17 02:22:32 +08:00
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memcpy(crat_image, crat_table, crat_table->length);
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*size = crat_table->length;
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return 0;
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}
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static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev,
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struct crat_subtype_computeunit *cu)
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{
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BUG_ON(!dev);
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BUG_ON(!cu);
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dev->node_props.cpu_cores_count = cu->num_cpu_cores;
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dev->node_props.cpu_core_id_base = cu->processor_id_low;
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if (cu->hsa_capability & CRAT_CU_FLAGS_IOMMU_PRESENT)
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dev->node_props.capability |= HSA_CAP_ATS_PRESENT;
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pr_info("CU CPU: cores=%d id_base=%d\n", cu->num_cpu_cores,
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cu->processor_id_low);
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}
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static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev,
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struct crat_subtype_computeunit *cu)
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{
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BUG_ON(!dev);
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BUG_ON(!cu);
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dev->node_props.simd_id_base = cu->processor_id_low;
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dev->node_props.simd_count = cu->num_simd_cores;
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dev->node_props.lds_size_in_kb = cu->lds_size_in_kb;
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dev->node_props.max_waves_per_simd = cu->max_waves_simd;
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dev->node_props.wave_front_size = cu->wave_front_size;
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dev->node_props.mem_banks_count = cu->num_banks;
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dev->node_props.array_count = cu->num_arrays;
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dev->node_props.cu_per_simd_array = cu->num_cu_per_array;
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dev->node_props.simd_per_cu = cu->num_simd_per_cu;
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dev->node_props.max_slots_scratch_cu = cu->max_slots_scatch_cu;
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if (cu->hsa_capability & CRAT_CU_FLAGS_HOT_PLUGGABLE)
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dev->node_props.capability |= HSA_CAP_HOT_PLUGGABLE;
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pr_info("CU GPU: simds=%d id_base=%d\n", cu->num_simd_cores,
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cu->processor_id_low);
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}
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/* kfd_parse_subtype_cu is called when the topology mutex is already acquired */
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static int kfd_parse_subtype_cu(struct crat_subtype_computeunit *cu)
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{
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struct kfd_topology_device *dev;
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int i = 0;
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BUG_ON(!cu);
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pr_info("Found CU entry in CRAT table with proximity_domain=%d caps=%x\n",
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cu->proximity_domain, cu->hsa_capability);
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list_for_each_entry(dev, &topology_device_list, list) {
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if (cu->proximity_domain == i) {
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if (cu->flags & CRAT_CU_FLAGS_CPU_PRESENT)
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kfd_populated_cu_info_cpu(dev, cu);
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if (cu->flags & CRAT_CU_FLAGS_GPU_PRESENT)
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kfd_populated_cu_info_gpu(dev, cu);
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break;
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}
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i++;
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}
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return 0;
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}
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/*
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* kfd_parse_subtype_mem is called when the topology mutex is
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* already acquired
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*/
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static int kfd_parse_subtype_mem(struct crat_subtype_memory *mem)
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{
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struct kfd_mem_properties *props;
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struct kfd_topology_device *dev;
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int i = 0;
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BUG_ON(!mem);
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pr_info("Found memory entry in CRAT table with proximity_domain=%d\n",
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mem->promixity_domain);
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list_for_each_entry(dev, &topology_device_list, list) {
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if (mem->promixity_domain == i) {
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props = kfd_alloc_struct(props);
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2014-11-20 21:41:33 +08:00
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if (props == NULL)
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2014-07-17 02:22:32 +08:00
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return -ENOMEM;
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if (dev->node_props.cpu_cores_count == 0)
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props->heap_type = HSA_MEM_HEAP_TYPE_FB_PRIVATE;
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else
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props->heap_type = HSA_MEM_HEAP_TYPE_SYSTEM;
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if (mem->flags & CRAT_MEM_FLAGS_HOT_PLUGGABLE)
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props->flags |= HSA_MEM_FLAGS_HOT_PLUGGABLE;
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if (mem->flags & CRAT_MEM_FLAGS_NON_VOLATILE)
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props->flags |= HSA_MEM_FLAGS_NON_VOLATILE;
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props->size_in_bytes =
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((uint64_t)mem->length_high << 32) +
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mem->length_low;
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props->width = mem->width;
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dev->mem_bank_count++;
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list_add_tail(&props->list, &dev->mem_props);
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break;
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}
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i++;
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}
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return 0;
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}
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/*
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* kfd_parse_subtype_cache is called when the topology mutex
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* is already acquired
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*/
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static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache)
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{
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struct kfd_cache_properties *props;
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struct kfd_topology_device *dev;
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uint32_t id;
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BUG_ON(!cache);
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id = cache->processor_id_low;
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pr_info("Found cache entry in CRAT table with processor_id=%d\n", id);
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list_for_each_entry(dev, &topology_device_list, list)
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if (id == dev->node_props.cpu_core_id_base ||
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id == dev->node_props.simd_id_base) {
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props = kfd_alloc_struct(props);
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2014-11-20 21:41:33 +08:00
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if (props == NULL)
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2014-07-17 02:22:32 +08:00
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return -ENOMEM;
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props->processor_id_low = id;
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props->cache_level = cache->cache_level;
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props->cache_size = cache->cache_size;
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props->cacheline_size = cache->cache_line_size;
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props->cachelines_per_tag = cache->lines_per_tag;
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props->cache_assoc = cache->associativity;
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props->cache_latency = cache->cache_latency;
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if (cache->flags & CRAT_CACHE_FLAGS_DATA_CACHE)
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props->cache_type |= HSA_CACHE_TYPE_DATA;
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if (cache->flags & CRAT_CACHE_FLAGS_INST_CACHE)
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props->cache_type |= HSA_CACHE_TYPE_INSTRUCTION;
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if (cache->flags & CRAT_CACHE_FLAGS_CPU_CACHE)
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props->cache_type |= HSA_CACHE_TYPE_CPU;
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if (cache->flags & CRAT_CACHE_FLAGS_SIMD_CACHE)
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props->cache_type |= HSA_CACHE_TYPE_HSACU;
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dev->cache_count++;
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dev->node_props.caches_count++;
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list_add_tail(&props->list, &dev->cache_props);
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break;
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}
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return 0;
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}
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/*
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* kfd_parse_subtype_iolink is called when the topology mutex
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* is already acquired
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*/
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static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink)
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{
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struct kfd_iolink_properties *props;
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struct kfd_topology_device *dev;
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uint32_t i = 0;
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uint32_t id_from;
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uint32_t id_to;
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BUG_ON(!iolink);
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id_from = iolink->proximity_domain_from;
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id_to = iolink->proximity_domain_to;
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pr_info("Found IO link entry in CRAT table with id_from=%d\n", id_from);
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list_for_each_entry(dev, &topology_device_list, list) {
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if (id_from == i) {
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props = kfd_alloc_struct(props);
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2014-11-20 21:41:33 +08:00
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if (props == NULL)
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2014-07-17 02:22:32 +08:00
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return -ENOMEM;
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props->node_from = id_from;
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props->node_to = id_to;
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props->ver_maj = iolink->version_major;
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props->ver_min = iolink->version_minor;
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/*
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* weight factor (derived from CDIR), currently always 1
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*/
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props->weight = 1;
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props->min_latency = iolink->minimum_latency;
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props->max_latency = iolink->maximum_latency;
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props->min_bandwidth = iolink->minimum_bandwidth_mbs;
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props->max_bandwidth = iolink->maximum_bandwidth_mbs;
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props->rec_transfer_size =
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iolink->recommended_transfer_size;
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dev->io_link_count++;
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dev->node_props.io_links_count++;
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list_add_tail(&props->list, &dev->io_link_props);
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break;
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}
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i++;
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}
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return 0;
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}
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static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr)
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{
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struct crat_subtype_computeunit *cu;
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struct crat_subtype_memory *mem;
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struct crat_subtype_cache *cache;
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struct crat_subtype_iolink *iolink;
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int ret = 0;
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BUG_ON(!sub_type_hdr);
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switch (sub_type_hdr->type) {
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case CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY:
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cu = (struct crat_subtype_computeunit *)sub_type_hdr;
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ret = kfd_parse_subtype_cu(cu);
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break;
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case CRAT_SUBTYPE_MEMORY_AFFINITY:
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mem = (struct crat_subtype_memory *)sub_type_hdr;
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ret = kfd_parse_subtype_mem(mem);
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break;
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case CRAT_SUBTYPE_CACHE_AFFINITY:
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cache = (struct crat_subtype_cache *)sub_type_hdr;
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ret = kfd_parse_subtype_cache(cache);
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break;
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case CRAT_SUBTYPE_TLB_AFFINITY:
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/*
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* For now, nothing to do here
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*/
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pr_info("Found TLB entry in CRAT table (not processing)\n");
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break;
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case CRAT_SUBTYPE_CCOMPUTE_AFFINITY:
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/*
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* For now, nothing to do here
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*/
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pr_info("Found CCOMPUTE entry in CRAT table (not processing)\n");
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break;
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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);
|
2014-11-20 21:41:33 +08:00
|
|
|
if (dev == NULL) {
|
2014-07-17 02:22:32 +08:00
|
|
|
pr_err("No memory to allocate a topology device");
|
2014-11-20 21:41:33 +08:00
|
|
|
return NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
2014-11-20 21:41:33 +08:00
|
|
|
}
|
2014-07-17 02:22:32 +08:00
|
|
|
|
|
|
|
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;
|
2014-10-13 21:35:12 +08:00
|
|
|
uint32_t log_max_watch_addr;
|
2014-07-17 02:22:32 +08:00
|
|
|
|
|
|
|
/* 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);
|
2014-10-13 21:35:12 +08:00
|
|
|
return sysfs_show_32bit_val(buffer, dev->gpu_id);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (strcmp(attr->name, "name") == 0) {
|
2014-07-17 02:22:32 +08:00
|
|
|
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;
|
2014-10-13 21:35:12 +08:00
|
|
|
return sysfs_show_str_val(buffer, public_name);
|
|
|
|
}
|
2014-07-17 02:22:32 +08:00
|
|
|
|
2014-10-13 21:35:12 +08:00
|
|
|
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);
|
|
|
|
}
|
2014-11-09 18:46:56 +08:00
|
|
|
|
2014-10-13 21:35:12 +08:00
|
|
|
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);
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
2014-10-13 21:35:12 +08:00
|
|
|
sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
|
2015-03-17 19:32:53 +08:00
|
|
|
dev->gpu->kfd2kgd->get_max_engine_clock_in_mhz(
|
2014-10-13 21:35:12 +08:00
|
|
|
dev->gpu->kgd));
|
|
|
|
sysfs_show_64bit_prop(buffer, "local_mem_size",
|
2015-03-17 19:32:53 +08:00
|
|
|
dev->gpu->kfd2kgd->get_vmem_size(
|
|
|
|
dev->gpu->kgd));
|
2014-10-13 21:35:12 +08:00
|
|
|
|
|
|
|
sysfs_show_32bit_prop(buffer, "fw_version",
|
2015-03-17 19:32:53 +08:00
|
|
|
dev->gpu->kfd2kgd->get_fw_version(
|
2014-10-13 21:35:12 +08:00
|
|
|
dev->gpu->kgd,
|
|
|
|
KGD_ENGINE_MEC1));
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
2014-10-13 21:35:12 +08:00
|
|
|
return sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
|
|
|
|
cpufreq_quick_get_max(0)/1000);
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
2014-11-20 21:41:33 +08:00
|
|
|
iolink->kobj = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
kobject_del(dev->kobj_iolink);
|
|
|
|
kobject_put(dev->kobj_iolink);
|
2014-11-20 21:41:33 +08:00
|
|
|
dev->kobj_iolink = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->kobj_cache) {
|
|
|
|
list_for_each_entry(cache, &dev->cache_props, list)
|
|
|
|
if (cache->kobj) {
|
|
|
|
kfd_remove_sysfs_file(cache->kobj,
|
|
|
|
&cache->attr);
|
2014-11-20 21:41:33 +08:00
|
|
|
cache->kobj = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
kobject_del(dev->kobj_cache);
|
|
|
|
kobject_put(dev->kobj_cache);
|
2014-11-20 21:41:33 +08:00
|
|
|
dev->kobj_cache = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->kobj_mem) {
|
|
|
|
list_for_each_entry(mem, &dev->mem_props, list)
|
|
|
|
if (mem->kobj) {
|
|
|
|
kfd_remove_sysfs_file(mem->kobj, &mem->attr);
|
2014-11-20 21:41:33 +08:00
|
|
|
mem->kobj = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
kobject_del(dev->kobj_mem);
|
|
|
|
kobject_put(dev->kobj_mem);
|
2014-11-20 21:41:33 +08:00
|
|
|
dev->kobj_mem = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
2014-11-20 21:41:33 +08:00
|
|
|
dev->kobj_node = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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) {
|
2014-12-02 22:41:08 +08:00
|
|
|
ret = kfd_build_sysfs_node_entry(dev, i);
|
2014-07-17 02:22:32 +08:00
|
|
|
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");
|
2014-11-20 21:41:33 +08:00
|
|
|
if (sys_props.kobj_topology == NULL) {
|
2014-07-17 02:22:32 +08:00
|
|
|
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);
|
2014-11-20 21:41:33 +08:00
|
|
|
sys_props.kobj_nodes = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
kobject_del(sys_props.kobj_topology);
|
|
|
|
kobject_put(sys_props.kobj_topology);
|
2014-11-20 21:41:33 +08:00
|
|
|
sys_props.kobj_topology = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int kfd_topology_init(void)
|
|
|
|
{
|
2014-11-20 21:41:33 +08:00
|
|
|
void *crat_image = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
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;
|
2015-03-17 19:32:53 +08:00
|
|
|
buf[5] = (uint32_t)(gpu->kfd2kgd->get_vmem_size(gpu->kgd)
|
|
|
|
& 0xffffffff);
|
|
|
|
buf[6] = (uint32_t)(gpu->kfd2kgd->get_vmem_size(gpu->kgd) >> 32);
|
2014-07-17 02:22:32 +08:00
|
|
|
|
|
|
|
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;
|
2014-11-20 21:41:33 +08:00
|
|
|
struct kfd_topology_device *out_dev = NULL;
|
2014-07-17 02:22:32 +08:00
|
|
|
|
|
|
|
BUG_ON(!gpu);
|
|
|
|
|
|
|
|
list_for_each_entry(dev, &topology_device_list, list)
|
2014-11-20 21:41:33 +08:00
|
|
|
if (dev->gpu == NULL && dev->node_props.simd_count > 0) {
|
2014-07-17 02:22:32 +08:00
|
|
|
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;
|
|
|
|
|
|
|
|
}
|