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Commit 5e618699 authored by Rex Zhu's avatar Rex Zhu Committed by Alex Deucher
Browse files

drm/amdgpu: implement cgs interface to query system info 



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

Signed-off-by: default avatarRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: default avatarJammy Zhou <Jammy.Zhou@amd.com>
parent 3f1d35a0

drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c

+23 −0
Original line number Diff line number Diff line
@@ -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 = {

drivers/gpu/drm/amd/include/cgs_common.h

+23 −0
Original line number Diff line number Diff line
@@ -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 */