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drm/amdkfd: Group up CRAT related functions

Browse Source 
Take CRAT related functions out of kfd_topology.c and place them in
kfd_crat.c. This is the initial step of supporting more CRAT features,
i.e. creating virtual CRAT table for KFD devices without CRAT.

v2: Minor cleanup that was missed previously because code moved around

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Signed-off-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling 2017-12-08 23:08:49 -05:00 committed by Oded Gabbay
parent 5108d76840
commit 174de876d6
5 changed files with 362 additions and 332 deletions
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2
drivers/gpu/drm/amd/amdkfd/Makefile
View File

@ -35,7 +35,7 @@ amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o kfd_topology.o \
kfd_process_queue_manager.o kfd_device_queue_manager.o \
kfd_device_queue_manager_cik.o kfd_device_queue_manager_vi.o \
kfd_interrupt.o kfd_events.o cik_event_interrupt.o \
kfd_dbgdev.o kfd_dbgmgr.o
kfd_dbgdev.o kfd_dbgmgr.o kfd_crat.o
amdkfd-$(CONFIG_DEBUG_FS) += kfd_debugfs.o

350
drivers/gpu/drm/amd/amdkfd/kfd_crat.c Normal file
View File

@ -0,0 +1,350 @@
/*
* Copyright 2015-2017 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/acpi.h>
#include "kfd_crat.h"
#include "kfd_topology.h"
static int topology_crat_parsed;
extern struct list_head topology_device_list;
extern struct kfd_system_properties sys_props;
static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev,
struct crat_subtype_computeunit *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)
{
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: id_base=%d\n", 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;
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;
pr_info("Found memory entry in CRAT table with proximity_domain=%d\n",
mem->proximity_domain);
list_for_each_entry(dev, &topology_device_list, list) {
if (mem->proximity_domain == i) {
props = kfd_alloc_struct(props);
if (!props)
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;
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)
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;
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)
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;
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;
}
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;
}
int kfd_topology_get_crat_acpi(void *crat_image, size_t *size)
{
struct acpi_table_header *crat_table;
acpi_status status;
if (!size)
return -EINVAL;
/*
* Fetch the CRAT table from ACPI
*/
status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table);
if (status == AE_NOT_FOUND) {
pr_warn("CRAT table not found\n");
return -ENODATA;
} else if (ACPI_FAILURE(status)) {
const char *err = acpi_format_exception(status);
pr_err("CRAT table error: %s\n", err);
return -EINVAL;
}
if (*size >= crat_table->length && crat_image != NULL)
memcpy(crat_image, crat_table, crat_table->length);
*size = crat_table->length;
return 0;
}

5
drivers/gpu/drm/amd/amdkfd/kfd_crat.h
View File

@ -127,7 +127,7 @@ struct crat_subtype_memory {
uint8_t length;
uint16_t reserved;
uint32_t flags;
uint32_t promixity_domain;
uint32_t proximity_domain;
uint32_t base_addr_low;
uint32_t base_addr_high;
uint32_t length_low;
@ -291,4 +291,7 @@ struct cdit_header {
#pragma pack()
int kfd_topology_get_crat_acpi(void *crat_image, size_t *size);
int kfd_parse_crat_table(void *crat_image);
#endif /* KFD_CRAT_H_INCLUDED */

334
drivers/gpu/drm/amd/amdkfd/kfd_topology.c
View File

@ -34,9 +34,8 @@
#include "kfd_topology.h"
#include "kfd_device_queue_manager.h"
static struct list_head topology_device_list;
static int topology_crat_parsed;
static struct kfd_system_properties sys_props;
struct list_head topology_device_list;
struct kfd_system_properties sys_props;
static DECLARE_RWSEM(topology_lock);
@ -76,276 +75,6 @@ struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
return device;
}
static int kfd_topology_get_crat_acpi(void *crat_image, size_t *size)
{
struct acpi_table_header *crat_table;
acpi_status status;
if (!size)
return -EINVAL;
/*
* Fetch the CRAT table from ACPI
*/
status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table);
if (status == AE_NOT_FOUND) {
pr_warn("CRAT table not found\n");
return -ENODATA;
} else if (ACPI_FAILURE(status)) {
const char *err = acpi_format_exception(status);
pr_err("CRAT table error: %s\n", err);
return -EINVAL;
}
if (*size >= crat_table->length && crat_image != NULL)
memcpy(crat_image, crat_table, crat_table->length);
*size = crat_table->length;
return 0;
}
static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev,
struct crat_subtype_computeunit *cu)
{
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)
{
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: id_base=%d\n", 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;
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;
pr_info("Found memory entry in CRAT table with proximity_domain=%d\n",
mem->promixity_domain);
list_for_each_entry(dev, &topology_device_list, list) {
if (mem->promixity_domain == i) {
props = kfd_alloc_struct(props);
if (props == NULL)
return -ENOMEM;
if (dev->node_props.cpu_cores_count == 0)
props->heap_type = HSA_MEM_HEAP_TYPE_FB_PRIVATE;
else
props->heap_type = HSA_MEM_HEAP_TYPE_SYSTEM;
if (mem->flags & CRAT_MEM_FLAGS_HOT_PLUGGABLE)
props->flags |= HSA_MEM_FLAGS_HOT_PLUGGABLE;
if (mem->flags & CRAT_MEM_FLAGS_NON_VOLATILE)
props->flags |= HSA_MEM_FLAGS_NON_VOLATILE;
props->size_in_bytes =
((uint64_t)mem->length_high << 32) +
mem->length_low;
props->width = mem->width;
dev->mem_bank_count++;
list_add_tail(&props->list, &dev->mem_props);
break;
}
i++;
}
return 0;
}
/*
* kfd_parse_subtype_cache is called when the topology mutex
* is already acquired
*/
static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache)
{
struct kfd_cache_properties *props;
struct kfd_topology_device *dev;
uint32_t id;
id = cache->processor_id_low;
pr_info("Found cache entry in CRAT table with processor_id=%d\n", id);
list_for_each_entry(dev, &topology_device_list, list)
if (id == dev->node_props.cpu_core_id_base ||
id == dev->node_props.simd_id_base) {
props = kfd_alloc_struct(props);
if (props == NULL)
return -ENOMEM;
props->processor_id_low = id;
props->cache_level = cache->cache_level;
props->cache_size = cache->cache_size;
props->cacheline_size = cache->cache_line_size;
props->cachelines_per_tag = cache->lines_per_tag;
props->cache_assoc = cache->associativity;
props->cache_latency = cache->cache_latency;
if (cache->flags & CRAT_CACHE_FLAGS_DATA_CACHE)
props->cache_type |= HSA_CACHE_TYPE_DATA;
if (cache->flags & CRAT_CACHE_FLAGS_INST_CACHE)
props->cache_type |= HSA_CACHE_TYPE_INSTRUCTION;
if (cache->flags & CRAT_CACHE_FLAGS_CPU_CACHE)
props->cache_type |= HSA_CACHE_TYPE_CPU;
if (cache->flags & CRAT_CACHE_FLAGS_SIMD_CACHE)
props->cache_type |= HSA_CACHE_TYPE_HSACU;
dev->cache_count++;
dev->node_props.caches_count++;
list_add_tail(&props->list, &dev->cache_props);
break;
}
return 0;
}
/*
* kfd_parse_subtype_iolink is called when the topology mutex
* is already acquired
*/
static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink)
{
struct kfd_iolink_properties *props;
struct kfd_topology_device *dev;
uint32_t i = 0;
uint32_t id_from;
uint32_t id_to;
id_from = iolink->proximity_domain_from;
id_to = iolink->proximity_domain_to;
pr_info("Found IO link entry in CRAT table with id_from=%d\n", id_from);
list_for_each_entry(dev, &topology_device_list, list) {
if (id_from == i) {
props = kfd_alloc_struct(props);
if (props == NULL)
return -ENOMEM;
props->node_from = id_from;
props->node_to = id_to;
props->ver_maj = iolink->version_major;
props->ver_min = iolink->version_minor;
/*
* weight factor (derived from CDIR), currently always 1
*/
props->weight = 1;
props->min_latency = iolink->minimum_latency;
props->max_latency = iolink->maximum_latency;
props->min_bandwidth = iolink->minimum_bandwidth_mbs;
props->max_bandwidth = iolink->maximum_bandwidth_mbs;
props->rec_transfer_size =
iolink->recommended_transfer_size;
dev->io_link_count++;
dev->node_props.io_links_count++;
list_add_tail(&props->list, &dev->io_link_props);
break;
}
i++;
}
return 0;
}
static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr)
{
struct crat_subtype_computeunit *cu;
struct crat_subtype_memory *mem;
struct crat_subtype_cache *cache;
struct crat_subtype_iolink *iolink;
int ret = 0;
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;
@ -380,7 +109,7 @@ static void kfd_release_topology_device(struct kfd_topology_device *dev)
sys_props.num_devices--;
}
static void kfd_release_live_view(void)
void kfd_release_live_view(void)
{
struct kfd_topology_device *dev;
@ -393,7 +122,7 @@ static void kfd_release_live_view(void)
memset(&sys_props, 0, sizeof(sys_props));
}
static struct kfd_topology_device *kfd_create_topology_device(void)
struct kfd_topology_device *kfd_create_topology_device(void)
{
struct kfd_topology_device *dev;
@ -413,58 +142,6 @@ static struct kfd_topology_device *kfd_create_topology_device(void)
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__)
@ -1016,7 +693,6 @@ int kfd_topology_init(void)
*/
INIT_LIST_HEAD(&topology_device_list);
init_rwsem(&topology_lock);
topology_crat_parsed = 0;
memset(&sys_props, 0, sizeof(sys_props));
@ -1219,7 +895,7 @@ int kfd_topology_remove_device(struct kfd_dev *gpu)
up_write(&topology_lock);
if (res == 0)
if (!res)
kfd_notify_gpu_change(gpu_id, 0);
return res;

3
drivers/gpu/drm/amd/amdkfd/kfd_topology.h
View File

@ -164,6 +164,7 @@ struct kfd_system_properties {
struct attribute attr_props;
};
struct kfd_topology_device *kfd_create_topology_device(void);
void kfd_release_live_view(void);
#endif /* __KFD_TOPOLOGY_H__ */