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Message-ID: <53D4E1E1.6060708@amd.com>
Date: Sun, 27 Jul 2014 14:26:25 +0300
From: Oded Gabbay <oded.gabbay@....com>
To: Jerome Glisse <j.glisse@...il.com>
CC: David Airlie <airlied@...ux.ie>,
Alex Deucher <alexdeucher@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
John Bridgman <John.Bridgman@....com>,
Joerg Roedel <joro@...tes.org>,
Andrew Lewycky <Andrew.Lewycky@....com>,
Christian König <deathsimple@...afone.de>,
Michel Dänzer <michel.daenzer@....com>,
Ben Goz <Ben.Goz@....com>,
Alexey Skidanov <Alexey.Skidanov@....com>,
<linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH v2 10/25] amdkfd: Add topology module to amdkfd
On 21/07/14 01:37, Jerome Glisse wrote:
> On Thu, Jul 17, 2014 at 04:29:17PM +0300, Oded Gabbay wrote:
>> From: Evgeny Pinchuk <evgeny.pinchuk@....com>
>>
>> This patch adds the topology module to the driver. The topology is exposed to
>> userspace through the sysfs.
>>
>> The calls to add and remove a device to/from topology are done by the radeon
>> driver.
>
> So overall we already said that we do not want to see the cpu architecture
> re-expose by hsa in its own format. This pacth is NACK. Only expose additional
> non existent information and also follow the number one rules of sysfs which
> is one value -> one file.
>
> I understand the temptation to rexpose the cpu topology in your own way to
> make life simpler but there is already api for this so please use what exist
> today and if there is short coming than i am sure they can be fixed.
>
> See :
>
> /sys/devices/system/cpu/cpu*
>
>>
>> Signed-off-by: Evgeny Pinchuk <evgeny.pinchuk@....com>
>> Signed-off-by: Oded Gabbay <oded.gabbay@....com>
>> ---
>> drivers/gpu/drm/radeon/amdkfd/Makefile | 2 +-
>> drivers/gpu/drm/radeon/amdkfd/kfd_crat.h | 294 +++++++
>> drivers/gpu/drm/radeon/amdkfd/kfd_device.c | 7 +
>> drivers/gpu/drm/radeon/amdkfd/kfd_module.c | 7 +
>> drivers/gpu/drm/radeon/amdkfd/kfd_priv.h | 17 +
>> drivers/gpu/drm/radeon/amdkfd/kfd_topology.c | 1207 ++++++++++++++++++++++++++
>> drivers/gpu/drm/radeon/amdkfd/kfd_topology.h | 168 ++++
>> 7 files changed, 1701 insertions(+), 1 deletion(-)
>> create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_crat.h
>> create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_topology.c
>> create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_topology.h
>>
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/Makefile b/drivers/gpu/drm/radeon/amdkfd/Makefile
>> index 9564e75..08ecfcd 100644
>> --- a/drivers/gpu/drm/radeon/amdkfd/Makefile
>> +++ b/drivers/gpu/drm/radeon/amdkfd/Makefile
>> @@ -4,6 +4,6 @@
>>
>> ccflags-y := -Iinclude/drm
>>
>> -amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o
>> +amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o kfd_topology.o
>>
>> obj-$(CONFIG_HSA_RADEON) += amdkfd.o
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_crat.h b/drivers/gpu/drm/radeon/amdkfd/kfd_crat.h
>> new file mode 100644
>> index 0000000..a374fa3
>> --- /dev/null
>> +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_crat.h
>> @@ -0,0 +1,294 @@
>> +/*
>> + * 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.
>> + */
>> +
>> +#ifndef KFD_CRAT_H_INCLUDED
>> +#define KFD_CRAT_H_INCLUDED
>> +
>> +#include <linux/types.h>
>> +
>> +#pragma pack(1)
>
> No pragma
>
Why no pragma ?
The structures here describe H/W tables in the BIOS so we must pragma pack(1)
them. See for example the following line in file atombios.h in radeon:
#pragma pack(1) /* BIOS data must use byte aligment */
Oded
>> +
>> +/*
>> + * 4CC signature values for the CRAT and CDIT ACPI tables
>> + */
>> +
>> +#define CRAT_SIGNATURE "CRAT"
>> +#define CDIT_SIGNATURE "CDIT"
>> +
>> +/*
>> + * Component Resource Association Table (CRAT)
>> + */
>> +
>> +#define CRAT_OEMID_LENGTH 6
>> +#define CRAT_OEMTABLEID_LENGTH 8
>> +#define CRAT_RESERVED_LENGTH 6
>> +
>> +#define CRAT_OEMID_64BIT_MASK ((1ULL << (CRAT_OEMID_LENGTH * 8)) - 1)
>> +
>> +struct crat_header {
>> + uint32_t signature;
>> + uint32_t length;
>> + uint8_t revision;
>> + uint8_t checksum;
>> + uint8_t oem_id[CRAT_OEMID_LENGTH];
>> + uint8_t oem_table_id[CRAT_OEMTABLEID_LENGTH];
>> + uint32_t oem_revision;
>> + uint32_t creator_id;
>> + uint32_t creator_revision;
>> + uint32_t total_entries;
>> + uint16_t num_domains;
>> + uint8_t reserved[CRAT_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * The header structure is immediately followed by total_entries of the
>> + * data definitions
>> + */
>> +
>> +/*
>> + * The currently defined subtype entries in the CRAT
>> + */
>> +#define CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY 0
>> +#define CRAT_SUBTYPE_MEMORY_AFFINITY 1
>> +#define CRAT_SUBTYPE_CACHE_AFFINITY 2
>> +#define CRAT_SUBTYPE_TLB_AFFINITY 3
>> +#define CRAT_SUBTYPE_CCOMPUTE_AFFINITY 4
>> +#define CRAT_SUBTYPE_IOLINK_AFFINITY 5
>> +#define CRAT_SUBTYPE_MAX 6
>> +
>> +#define CRAT_SIBLINGMAP_SIZE 32
>> +
>> +/*
>> + * ComputeUnit Affinity structure and definitions
>> + */
>> +#define CRAT_CU_FLAGS_ENABLED 0x00000001
>> +#define CRAT_CU_FLAGS_HOT_PLUGGABLE 0x00000002
>> +#define CRAT_CU_FLAGS_CPU_PRESENT 0x00000004
>> +#define CRAT_CU_FLAGS_GPU_PRESENT 0x00000008
>> +#define CRAT_CU_FLAGS_IOMMU_PRESENT 0x00000010
>> +#define CRAT_CU_FLAGS_RESERVED 0xffffffe0
>> +
>> +#define CRAT_COMPUTEUNIT_RESERVED_LENGTH 4
>> +
>> +struct crat_subtype_computeunit {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> + uint32_t proximity_domain;
>> + uint32_t processor_id_low;
>> + uint16_t num_cpu_cores;
>> + uint16_t num_simd_cores;
>> + uint16_t max_waves_simd;
>> + uint16_t io_count;
>> + uint16_t hsa_capability;
>> + uint16_t lds_size_in_kb;
>> + uint8_t wave_front_size;
>> + uint8_t num_banks;
>> + uint16_t micro_engine_id;
>> + uint8_t num_arrays;
>> + uint8_t num_cu_per_array;
>> + uint8_t num_simd_per_cu;
>> + uint8_t max_slots_scatch_cu;
>> + uint8_t reserved2[CRAT_COMPUTEUNIT_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * HSA Memory Affinity structure and definitions
>> + */
>> +#define CRAT_MEM_FLAGS_ENABLED 0x00000001
>> +#define CRAT_MEM_FLAGS_HOT_PLUGGABLE 0x00000002
>> +#define CRAT_MEM_FLAGS_NON_VOLATILE 0x00000004
>> +#define CRAT_MEM_FLAGS_RESERVED 0xfffffff8
>> +
>> +#define CRAT_MEMORY_RESERVED_LENGTH 8
>> +
>> +struct crat_subtype_memory {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> + uint32_t promixity_domain;
>> + uint32_t base_addr_low;
>> + uint32_t base_addr_high;
>> + uint32_t length_low;
>> + uint32_t length_high;
>> + uint32_t width;
>> + uint8_t reserved2[CRAT_MEMORY_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * HSA Cache Affinity structure and definitions
>> + */
>> +#define CRAT_CACHE_FLAGS_ENABLED 0x00000001
>> +#define CRAT_CACHE_FLAGS_DATA_CACHE 0x00000002
>> +#define CRAT_CACHE_FLAGS_INST_CACHE 0x00000004
>> +#define CRAT_CACHE_FLAGS_CPU_CACHE 0x00000008
>> +#define CRAT_CACHE_FLAGS_SIMD_CACHE 0x00000010
>> +#define CRAT_CACHE_FLAGS_RESERVED 0xffffffe0
>> +
>> +#define CRAT_CACHE_RESERVED_LENGTH 8
>> +
>> +struct crat_subtype_cache {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> + uint32_t processor_id_low;
>> + uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE];
>> + uint32_t cache_size;
>> + uint8_t cache_level;
>> + uint8_t lines_per_tag;
>> + uint16_t cache_line_size;
>> + uint8_t associativity;
>> + uint8_t cache_properties;
>> + uint16_t cache_latency;
>> + uint8_t reserved2[CRAT_CACHE_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * HSA TLB Affinity structure and definitions
>> + */
>> +#define CRAT_TLB_FLAGS_ENABLED 0x00000001
>> +#define CRAT_TLB_FLAGS_DATA_TLB 0x00000002
>> +#define CRAT_TLB_FLAGS_INST_TLB 0x00000004
>> +#define CRAT_TLB_FLAGS_CPU_TLB 0x00000008
>> +#define CRAT_TLB_FLAGS_SIMD_TLB 0x00000010
>> +#define CRAT_TLB_FLAGS_RESERVED 0xffffffe0
>> +
>> +#define CRAT_TLB_RESERVED_LENGTH 4
>> +
>> +struct crat_subtype_tlb {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> + uint32_t processor_id_low;
>> + uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE];
>> + uint32_t tlb_level;
>> + uint8_t data_tlb_associativity_2mb;
>> + uint8_t data_tlb_size_2mb;
>> + uint8_t instruction_tlb_associativity_2mb;
>> + uint8_t instruction_tlb_size_2mb;
>> + uint8_t data_tlb_associativity_4k;
>> + uint8_t data_tlb_size_4k;
>> + uint8_t instruction_tlb_associativity_4k;
>> + uint8_t instruction_tlb_size_4k;
>> + uint8_t data_tlb_associativity_1gb;
>> + uint8_t data_tlb_size_1gb;
>> + uint8_t instruction_tlb_associativity_1gb;
>> + uint8_t instruction_tlb_size_1gb;
>> + uint8_t reserved2[CRAT_TLB_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * HSA CCompute/APU Affinity structure and definitions
>> + */
>> +#define CRAT_CCOMPUTE_FLAGS_ENABLED 0x00000001
>> +#define CRAT_CCOMPUTE_FLAGS_RESERVED 0xfffffffe
>> +
>> +#define CRAT_CCOMPUTE_RESERVED_LENGTH 16
>> +
>> +struct crat_subtype_ccompute {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> + uint32_t processor_id_low;
>> + uint8_t sibling_map[CRAT_SIBLINGMAP_SIZE];
>> + uint32_t apu_size;
>> + uint8_t reserved2[CRAT_CCOMPUTE_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * HSA IO Link Affinity structure and definitions
>> + */
>> +#define CRAT_IOLINK_FLAGS_ENABLED 0x00000001
>> +#define CRAT_IOLINK_FLAGS_COHERENCY 0x00000002
>> +#define CRAT_IOLINK_FLAGS_RESERVED 0xfffffffc
>> +
>> +/*
>> + * IO interface types
>> + */
>> +#define CRAT_IOLINK_TYPE_UNDEFINED 0
>> +#define CRAT_IOLINK_TYPE_HYPERTRANSPORT 1
>> +#define CRAT_IOLINK_TYPE_PCIEXPRESS 2
>> +#define CRAT_IOLINK_TYPE_OTHER 3
>> +#define CRAT_IOLINK_TYPE_MAX 255
>> +
>> +#define CRAT_IOLINK_RESERVED_LENGTH 24
>> +
>> +struct crat_subtype_iolink {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> + uint32_t proximity_domain_from;
>> + uint32_t proximity_domain_to;
>> + uint8_t io_interface_type;
>> + uint8_t version_major;
>> + uint16_t version_minor;
>> + uint32_t minimum_latency;
>> + uint32_t maximum_latency;
>> + uint32_t minimum_bandwidth_mbs;
>> + uint32_t maximum_bandwidth_mbs;
>> + uint32_t recommended_transfer_size;
>> + uint8_t reserved2[CRAT_IOLINK_RESERVED_LENGTH];
>> +};
>> +
>> +/*
>> + * HSA generic sub-type header
>> + */
>> +
>> +#define CRAT_SUBTYPE_FLAGS_ENABLED 0x00000001
>> +
>> +struct crat_subtype_generic {
>> + uint8_t type;
>> + uint8_t length;
>> + uint16_t reserved;
>> + uint32_t flags;
>> +};
>> +
>> +/*
>> + * Component Locality Distance Information Table (CDIT)
>> + */
>> +#define CDIT_OEMID_LENGTH 6
>> +#define CDIT_OEMTABLEID_LENGTH 8
>> +
>> +struct cdit_header {
>> + uint32_t signature;
>> + uint32_t length;
>> + uint8_t revision;
>> + uint8_t checksum;
>> + uint8_t oem_id[CDIT_OEMID_LENGTH];
>> + uint8_t oem_table_id[CDIT_OEMTABLEID_LENGTH];
>> + uint32_t oem_revision;
>> + uint32_t creator_id;
>> + uint32_t creator_revision;
>> + uint32_t total_entries;
>> + uint16_t num_domains;
>> + uint8_t entry[1];
>> +};
>> +
>> +#pragma pack()
>> +
>> +#endif /* KFD_CRAT_H_INCLUDED */
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_device.c b/drivers/gpu/drm/radeon/amdkfd/kfd_device.c
>> index dd63ce09..4138694 100644
>> --- a/drivers/gpu/drm/radeon/amdkfd/kfd_device.c
>> +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_device.c
>> @@ -100,6 +100,9 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
>> {
>> kfd->shared_resources = *gpu_resources;
>>
>> + if (kfd_topology_add_device(kfd) != 0)
>> + return false;
>> +
>> kfd->init_complete = true;
>> dev_info(kfd_device, "added device (%x:%x)\n", kfd->pdev->vendor,
>> kfd->pdev->device);
>> @@ -109,6 +112,10 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
>>
>> void kgd2kfd_device_exit(struct kfd_dev *kfd)
>> {
>> + int err = kfd_topology_remove_device(kfd);
>> +
>> + BUG_ON(err != 0);
>> +
>> kfree(kfd);
>> }
>>
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_module.c b/drivers/gpu/drm/radeon/amdkfd/kfd_module.c
>> index c7faac6..c51f981 100644
>> --- a/drivers/gpu/drm/radeon/amdkfd/kfd_module.c
>> +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_module.c
>> @@ -73,16 +73,23 @@ static int __init kfd_module_init(void)
>> if (err < 0)
>> goto err_ioctl;
>>
>> + err = kfd_topology_init();
>> + if (err < 0)
>> + goto err_topology;
>> +
>> dev_info(kfd_device, "Initialized module\n");
>>
>> return 0;
>>
>> +err_topology:
>> + kfd_chardev_exit();
>> err_ioctl:
>> return err;
>> }
>>
>> static void __exit kfd_module_exit(void)
>> {
>> + kfd_topology_shutdown();
>> kfd_chardev_exit();
>> dev_info(kfd_device, "Removed module\n");
>> }
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
>> index 05e892f..b391e24 100644
>> --- a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
>> +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
>> @@ -32,6 +32,14 @@
>> #include <linux/spinlock.h>
>> #include "../radeon_kfd.h"
>>
>> +#define KFD_SYSFS_FILE_MODE 0444
>> +
>> +/* GPU ID hash width in bits */
>> +#define KFD_GPU_ID_HASH_WIDTH 16
>> +
>> +/* Macro for allocating structures */
>> +#define kfd_alloc_struct(ptr_to_struct) ((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL))
>> +
>> struct kfd_device_info {
>> const struct kfd_scheduler_class *scheduler_class;
>> unsigned int max_pasid_bits;
>> @@ -71,6 +79,15 @@ struct kfd_process {
>>
>> extern struct device *kfd_device;
>>
>> +/* Topology */
>> +int kfd_topology_init(void);
>> +void kfd_topology_shutdown(void);
>> +int kfd_topology_add_device(struct kfd_dev *gpu);
>> +int kfd_topology_remove_device(struct kfd_dev *gpu);
>> +struct kfd_dev *kfd_device_by_id(uint32_t gpu_id);
>> +struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev);
>> +struct kfd_dev *kfd_topology_enum_kfd_devices(uint8_t idx);
>> +
>> /* Interrupts */
>> void kgd2kfd_interrupt(struct kfd_dev *dev, const void *ih_ring_entry);
>>
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_topology.c b/drivers/gpu/drm/radeon/amdkfd/kfd_topology.c
>> new file mode 100644
>> index 0000000..30da4c3
>> --- /dev/null
>> +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_topology.c
>> @@ -0,0 +1,1207 @@
>> +/*
>> + * 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 "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 != 0)
>> + 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 == 0)
>> + 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 == 0)
>> + 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 == 0)
>> + 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 == 0) {
>> + pr_err("No memory to allocate a topology device");
>> + return 0;
>> + }
>> +
>> + 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)
>> +{
>> + ssize_t ret;
>> + struct kfd_topology_device *dev;
>> + char public_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
>> + uint32_t i;
>> +
>> + /* 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);
>> + ret = sysfs_show_32bit_val(buffer, dev->gpu_id);
>> + } else 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;
>> + ret = sysfs_show_str_val(buffer, public_name);
>> + } else {
>> + 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);
>> + 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, "engine_id",
>> + dev->node_props.engine_id);
>> + 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);
>> + sysfs_show_32bit_prop(buffer, "max_engine_clk_fcompute",
>> + kfd2kgd->get_max_engine_clock_in_mhz(
>> + dev->gpu->kgd));
>> + sysfs_show_64bit_prop(buffer, "local_mem_size",
>> + kfd2kgd->get_vmem_size(dev->gpu->kgd));
>> + ret = sysfs_show_32bit_prop(buffer, "max_engine_clk_ccompute",
>> + cpufreq_quick_get_max(0)/1000);
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +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 = 0;
>> + }
>> + kobject_del(dev->kobj_iolink);
>> + kobject_put(dev->kobj_iolink);
>> + dev->kobj_iolink = 0;
>> + }
>> +
>> + 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 = 0;
>> + }
>> + kobject_del(dev->kobj_cache);
>> + kobject_put(dev->kobj_cache);
>> + dev->kobj_cache = 0;
>> + }
>> +
>> + 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 = 0;
>> + }
>> + kobject_del(dev->kobj_mem);
>> + kobject_put(dev->kobj_mem);
>> + dev->kobj_mem = 0;
>> + }
>> +
>> + 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 = 0;
>> + }
>> +}
>> +
>> +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, 0);
>> + 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 == 0) {
>> + 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 = 0;
>> + }
>> + kobject_del(sys_props.kobj_topology);
>> + kobject_put(sys_props.kobj_topology);
>> + sys_props.kobj_topology = 0;
>> + }
>> +}
>> +
>> +int kfd_topology_init(void)
>> +{
>> + void *crat_image = 0;
>> + 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)(kfd2kgd->get_vmem_size(gpu->kgd) & 0xffffffff);
>> + buf[6] = (uint32_t)(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 = 0;
>> +
>> + BUG_ON(!gpu);
>> +
>> + list_for_each_entry(dev, &topology_device_list, list)
>> + if (dev->gpu == 0 && 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;
>> +
>> +}
>> diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_topology.h b/drivers/gpu/drm/radeon/amdkfd/kfd_topology.h
>> new file mode 100644
>> index 0000000..989624b
>> --- /dev/null
>> +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_topology.h
>> @@ -0,0 +1,168 @@
>> +/*
>> + * 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.
>> + */
>> +
>> +#ifndef __KFD_TOPOLOGY_H__
>> +#define __KFD_TOPOLOGY_H__
>> +
>> +#include <linux/types.h>
>> +#include <linux/list.h>
>> +#include "kfd_priv.h"
>> +
>> +#define KFD_TOPOLOGY_PUBLIC_NAME_SIZE 128
>> +
>> +#define HSA_CAP_HOT_PLUGGABLE 0x00000001
>> +#define HSA_CAP_ATS_PRESENT 0x00000002
>> +#define HSA_CAP_SHARED_WITH_GRAPHICS 0x00000004
>> +#define HSA_CAP_QUEUE_SIZE_POW2 0x00000008
>> +#define HSA_CAP_QUEUE_SIZE_32BIT 0x00000010
>> +#define HSA_CAP_QUEUE_IDLE_EVENT 0x00000020
>> +#define HSA_CAP_VA_LIMIT 0x00000040
>> +#define HSA_CAP_WATCH_POINTS_SUPPORTED 0x00000080
>> +#define HSA_CAP_WATCH_POINTS_TOTALBITS_MASK 0x00000f00
>> +#define HSA_CAP_WATCH_POINTS_TOTALBITS_SHIFT 8
>> +#define HSA_CAP_RESERVED 0xfffff000
>> +
>> +struct kfd_node_properties {
>> + uint32_t cpu_cores_count;
>> + uint32_t simd_count;
>> + uint32_t mem_banks_count;
>> + uint32_t caches_count;
>> + uint32_t io_links_count;
>> + uint32_t cpu_core_id_base;
>> + uint32_t simd_id_base;
>> + uint32_t capability;
>> + uint32_t max_waves_per_simd;
>> + uint32_t lds_size_in_kb;
>> + uint32_t gds_size_in_kb;
>> + uint32_t wave_front_size;
>> + uint32_t array_count;
>> + uint32_t simd_arrays_per_engine;
>> + uint32_t cu_per_simd_array;
>> + uint32_t simd_per_cu;
>> + uint32_t max_slots_scratch_cu;
>> + uint32_t engine_id;
>> + uint32_t vendor_id;
>> + uint32_t device_id;
>> + uint32_t location_id;
>> + uint32_t max_engine_clk_fcompute;
>> + uint32_t max_engine_clk_ccompute;
>> + uint16_t marketing_name[KFD_TOPOLOGY_PUBLIC_NAME_SIZE];
>> +};
>> +
>> +#define HSA_MEM_HEAP_TYPE_SYSTEM 0
>> +#define HSA_MEM_HEAP_TYPE_FB_PUBLIC 1
>> +#define HSA_MEM_HEAP_TYPE_FB_PRIVATE 2
>> +#define HSA_MEM_HEAP_TYPE_GPU_GDS 3
>> +#define HSA_MEM_HEAP_TYPE_GPU_LDS 4
>> +#define HSA_MEM_HEAP_TYPE_GPU_SCRATCH 5
>> +
>> +#define HSA_MEM_FLAGS_HOT_PLUGGABLE 0x00000001
>> +#define HSA_MEM_FLAGS_NON_VOLATILE 0x00000002
>> +#define HSA_MEM_FLAGS_RESERVED 0xfffffffc
>> +
>> +struct kfd_mem_properties {
>> + struct list_head list;
>> + uint32_t heap_type;
>> + uint64_t size_in_bytes;
>> + uint32_t flags;
>> + uint32_t width;
>> + uint32_t mem_clk_max;
>> + struct kobject *kobj;
>> + struct attribute attr;
>> +};
>> +
>> +#define KFD_TOPOLOGY_CPU_SIBLINGS 256
>> +
>> +#define HSA_CACHE_TYPE_DATA 0x00000001
>> +#define HSA_CACHE_TYPE_INSTRUCTION 0x00000002
>> +#define HSA_CACHE_TYPE_CPU 0x00000004
>> +#define HSA_CACHE_TYPE_HSACU 0x00000008
>> +#define HSA_CACHE_TYPE_RESERVED 0xfffffff0
>> +
>> +struct kfd_cache_properties {
>> + struct list_head list;
>> + uint32_t processor_id_low;
>> + uint32_t cache_level;
>> + uint32_t cache_size;
>> + uint32_t cacheline_size;
>> + uint32_t cachelines_per_tag;
>> + uint32_t cache_assoc;
>> + uint32_t cache_latency;
>> + uint32_t cache_type;
>> + uint8_t sibling_map[KFD_TOPOLOGY_CPU_SIBLINGS];
>> + struct kobject *kobj;
>> + struct attribute attr;
>> +};
>> +
>> +struct kfd_iolink_properties {
>> + struct list_head list;
>> + uint32_t iolink_type;
>> + uint32_t ver_maj;
>> + uint32_t ver_min;
>> + uint32_t node_from;
>> + uint32_t node_to;
>> + uint32_t weight;
>> + uint32_t min_latency;
>> + uint32_t max_latency;
>> + uint32_t min_bandwidth;
>> + uint32_t max_bandwidth;
>> + uint32_t rec_transfer_size;
>> + uint32_t flags;
>> + struct kobject *kobj;
>> + struct attribute attr;
>> +};
>> +
>> +struct kfd_topology_device {
>> + struct list_head list;
>> + uint32_t gpu_id;
>> + struct kfd_node_properties node_props;
>> + uint32_t mem_bank_count;
>> + struct list_head mem_props;
>> + uint32_t cache_count;
>> + struct list_head cache_props;
>> + uint32_t io_link_count;
>> + struct list_head io_link_props;
>> + struct kfd_dev *gpu;
>> + struct kobject *kobj_node;
>> + struct kobject *kobj_mem;
>> + struct kobject *kobj_cache;
>> + struct kobject *kobj_iolink;
>> + struct attribute attr_gpuid;
>> + struct attribute attr_name;
>> + struct attribute attr_props;
>> +};
>> +
>> +struct kfd_system_properties {
>> + uint32_t num_devices; /* Number of H-NUMA nodes */
>> + uint32_t generation_count;
>> + uint64_t platform_oem;
>> + uint64_t platform_id;
>> + uint64_t platform_rev;
>> + struct kobject *kobj_topology;
>> + struct kobject *kobj_nodes;
>> + struct attribute attr_genid;
>> + struct attribute attr_props;
>> +};
>> +
>> +
>> +
>> +#endif /* __KFD_TOPOLOGY_H__ */
>> --
>> 1.9.1
>>
--
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