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Commit b7facbae authored by Oded Gabbay's avatar Oded Gabbay
Browse files

amdkfd: Add IOCTL set definitions of amdkfd 



- KFD_IOC_GET_VERSION:
	Retrieves the interface version of amdkfd

- KFD_IOC_CREATE_QUEUE:
	Creates a usermode queue that runs on a specific GPU device

- KFD_IOC_DESTROY_QUEUE:
	Destroys an existing usermode queue

- KFD_IOC_SET_MEMORY_POLICY:
	Sets the memory policy of the default and alternate aperture of the
        calling process

- KFD_IOC_GET_CLOCK_COUNTERS:
	Retrieves counters (timestamps) of CPU and GPU

- KFD_IOC_GET_PROCESS_APERTURES:
	Retrieves information about process apertures that were initialized
        during the open() call of the amdkfd device

- KFD_IOC_UPDATE_QUEUE:
	Updates configuration of an existing usermode queue

v3: Remove pragma pack and pmc ioctls. Added parameter for doorbell offset and
a comment on counters

v5:

Add define for AQL queues.
Fix arguments of Get Version IOCTL
Make IOCTL's structures to be the same size on 32/64 bit

v6: Change the version of the amdkfd-thunk interface

Signed-off-by: default avatarOded Gabbay <oded.gabbay@amd.com>
parent 16423d67

include/uapi/linux/kfd_ioctl.h

0 → 100644
+154 −0
Original line number Diff line number Diff line 
/*

 * 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_IOCTL_H_INCLUDED

#define KFD_IOCTL_H_INCLUDED



#include <linux/types.h>

#include <linux/ioctl.h>



#define KFD_IOCTL_MAJOR_VERSION 1

#define KFD_IOCTL_MINOR_VERSION 0



struct kfd_ioctl_get_version_args {

	uint32_t major_version;	/* from KFD */

	uint32_t minor_version;	/* from KFD */

};



/* For kfd_ioctl_create_queue_args.queue_type. */

#define KFD_IOC_QUEUE_TYPE_COMPUTE	0

#define KFD_IOC_QUEUE_TYPE_SDMA		1

#define KFD_IOC_QUEUE_TYPE_COMPUTE_AQL	2



#define KFD_MAX_QUEUE_PERCENTAGE	100

#define KFD_MAX_QUEUE_PRIORITY		15



struct kfd_ioctl_create_queue_args {

	uint64_t ring_base_address;	/* to KFD */

	uint64_t write_pointer_address;	/* from KFD */

	uint64_t read_pointer_address;	/* from KFD */

	uint64_t doorbell_offset;	/* from KFD */



	uint32_t ring_size;		/* to KFD */

	uint32_t gpu_id;		/* to KFD */

	uint32_t queue_type;		/* to KFD */

	uint32_t queue_percentage;	/* to KFD */

	uint32_t queue_priority;	/* to KFD */

	uint32_t queue_id;		/* from KFD */



	uint64_t eop_buffer_address;	/* to KFD */

	uint64_t eop_buffer_size;	/* to KFD */

	uint64_t ctx_save_restore_address; /* to KFD */

	uint64_t ctx_save_restore_size;	/* to KFD */

};



struct kfd_ioctl_destroy_queue_args {

	uint32_t queue_id;		/* to KFD */

	uint32_t pad;

};



struct kfd_ioctl_update_queue_args {

	uint64_t ring_base_address;	/* to KFD */



	uint32_t queue_id;		/* to KFD */

	uint32_t ring_size;		/* to KFD */

	uint32_t queue_percentage;	/* to KFD */

	uint32_t queue_priority;	/* to KFD */

};



/* For kfd_ioctl_set_memory_policy_args.default_policy and alternate_policy */

#define KFD_IOC_CACHE_POLICY_COHERENT 0

#define KFD_IOC_CACHE_POLICY_NONCOHERENT 1



struct kfd_ioctl_set_memory_policy_args {

	uint64_t alternate_aperture_base;	/* to KFD */

	uint64_t alternate_aperture_size;	/* to KFD */



	uint32_t gpu_id;			/* to KFD */

	uint32_t default_policy;		/* to KFD */

	uint32_t alternate_policy;		/* to KFD */

	uint32_t pad;

};



/*

 * All counters are monotonic. They are used for profiling of compute jobs.

 * The profiling is done by userspace.

 *

 * In case of GPU reset, the counter should not be affected.

 */



struct kfd_ioctl_get_clock_counters_args {

	uint64_t gpu_clock_counter;	/* from KFD */

	uint64_t cpu_clock_counter;	/* from KFD */

	uint64_t system_clock_counter;	/* from KFD */

	uint64_t system_clock_freq;	/* from KFD */



	uint32_t gpu_id;		/* to KFD */

	uint32_t pad;

};



#define NUM_OF_SUPPORTED_GPUS 7



struct kfd_process_device_apertures {

	uint64_t lds_base;		/* from KFD */

	uint64_t lds_limit;		/* from KFD */

	uint64_t scratch_base;		/* from KFD */

	uint64_t scratch_limit;		/* from KFD */

	uint64_t gpuvm_base;		/* from KFD */

	uint64_t gpuvm_limit;		/* from KFD */

	uint32_t gpu_id;		/* from KFD */

	uint32_t pad;

};



struct kfd_ioctl_get_process_apertures_args {

	struct kfd_process_device_apertures

			process_apertures[NUM_OF_SUPPORTED_GPUS];/* from KFD */



	/* from KFD, should be in the range [1 - NUM_OF_SUPPORTED_GPUS] */

	uint32_t num_of_nodes;

	uint32_t pad;

};



#define KFD_IOC_MAGIC 'K'



#define KFD_IOC_GET_VERSION \

		_IOR(KFD_IOC_MAGIC, 1, struct kfd_ioctl_get_version_args)



#define KFD_IOC_CREATE_QUEUE \

		_IOWR(KFD_IOC_MAGIC, 2, struct kfd_ioctl_create_queue_args)



#define KFD_IOC_DESTROY_QUEUE \

	_IOWR(KFD_IOC_MAGIC, 3, struct kfd_ioctl_destroy_queue_args)



#define KFD_IOC_SET_MEMORY_POLICY \

	_IOW(KFD_IOC_MAGIC, 4, struct kfd_ioctl_set_memory_policy_args)



#define KFD_IOC_GET_CLOCK_COUNTERS \

	_IOWR(KFD_IOC_MAGIC, 5, struct kfd_ioctl_get_clock_counters_args)



#define KFD_IOC_GET_PROCESS_APERTURES \

	_IOR(KFD_IOC_MAGIC, 6, struct kfd_ioctl_get_process_apertures_args)



#define KFD_IOC_UPDATE_QUEUE \

	_IOW(KFD_IOC_MAGIC, 7, struct kfd_ioctl_update_queue_args)



#endif