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    Subject[PATCH v5 07/24] amdkfd: Add IOCTL set definitions of amdkfd
    Date
    - 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

    Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
    ---
    include/uapi/linux/kfd_ioctl.h | 154 +++++++++++++++++++++++++++++++++++++++++
    1 file changed, 154 insertions(+)
    create mode 100644 include/uapi/linux/kfd_ioctl.h

    diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
    new file mode 100644
    index 0000000..fa1bc6d
    --- /dev/null
    +++ b/include/uapi/linux/kfd_ioctl.h
    @@ -0,0 +1,154 @@
    +/*
    + * 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 2
    +
    +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
    --
    2.1.0


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