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drm/amdgpu: implement cgs interface to query system info

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Add a query to get the bus number and function of the
device.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
This commit is contained in:
Rex Zhu 2015-09-23 20:11:54 +08:00 committed by Alex Deucher
parent 3f1d35a03b
commit 5e6186991a
2 changed files with 46 additions and 0 deletions
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23
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
View File

@ -736,6 +736,28 @@ static int amdgpu_cgs_get_firmware_info(void *cgs_device,
return 0;
}
static int amdgpu_cgs_query_system_info(void *cgs_device,
struct cgs_system_info *sys_info)
{
CGS_FUNC_ADEV;
if (NULL == sys_info)
return -ENODEV;
if (sizeof(struct cgs_system_info) != sys_info->size)
return -ENODEV;
switch (sys_info->info_id) {
case CGS_SYSTEM_INFO_ADAPTER_BDF_ID:
sys_info->value = adev->pdev->devfn | (adev->pdev->bus->number << 8);
break;
default:
return -ENODEV;
}
return 0;
}
/** \brief evaluate acpi namespace object, handle or pathname must be valid
* \param cgs_device
* \param info input/output arguments for the control method
@ -985,6 +1007,7 @@ static const struct cgs_ops amdgpu_cgs_ops = {
amdgpu_cgs_set_powergating_state,
amdgpu_cgs_set_clockgating_state,
amdgpu_cgs_call_acpi_method,
amdgpu_cgs_query_system_info,
};
static const struct cgs_os_ops amdgpu_cgs_os_ops = {

23
drivers/gpu/drm/amd/include/cgs_common.h
View File

@ -105,6 +105,21 @@ enum cgs_ucode_id {
CGS_UCODE_ID_MAXIMUM,
};
enum cgs_system_info_id {
CGS_SYSTEM_INFO_ADAPTER_BDF_ID = 1,
CGS_SYSTEM_INFO_ID_MAXIMUM,
};
struct cgs_system_info {
uint64_t size;
uint64_t info_id;
union {
void *ptr;
uint64_t value;
};
uint64_t padding[13];
};
/**
* struct cgs_clock_limits - Clock limits
*
@ -533,6 +548,10 @@ typedef int (*cgs_call_acpi_method)(void *cgs_device,
uint32_t output_count,
uint32_t input_size,
uint32_t output_size);
typedef int (*cgs_query_system_info)(void *cgs_device,
struct cgs_system_info *sys_info);
struct cgs_ops {
/* memory management calls (similar to KFD interface) */
cgs_gpu_mem_info_t gpu_mem_info;
@ -575,6 +594,8 @@ struct cgs_ops {
cgs_set_clockgating_state set_clockgating_state;
/* ACPI */
cgs_call_acpi_method call_acpi_method;
/* get system info */
cgs_query_system_info query_system_info;
};
struct cgs_os_ops; /* To be define in OS-specific CGS header */
@ -663,5 +684,7 @@ struct cgs_device
CGS_CALL(set_clockgating_state, dev, block_type, state)
#define cgs_call_acpi_method(dev, acpi_method, acpi_function, pintput, poutput, output_count, input_size, output_size) \
CGS_CALL(call_acpi_method, dev, acpi_method, acpi_function, pintput, poutput, output_count, input_size, output_size)
#define cgs_query_system_info(dev, sys_info) \
CGS_CALL(query_system_info, dev, sys_info)
#endif /* _CGS_COMMON_H */