- 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
Signed-off-by: Oded Gabbay oded.gabbay@amd.com --- include/uapi/linux/kfd_ioctl.h | 123 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 123 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..a06e021 --- /dev/null +++ b/include/uapi/linux/kfd_ioctl.h @@ -0,0 +1,123 @@ +/* + * 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_CURRENT_VERSION 1 + +struct kfd_ioctl_get_version_args { + uint32_t min_supported_version; /* from KFD */ + uint32_t max_supported_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 + +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 */ +}; + +struct kfd_ioctl_destroy_queue_args { + uint32_t queue_id; /* to KFD */ +}; + +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 */ +}; + +/* + * 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 */ +}; + +#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 */ +}; + +struct kfd_ioctl_get_process_apertures_args { + struct kfd_process_device_apertures process_apertures[NUM_OF_SUPPORTED_GPUS];/* from KFD */ + uint8_t num_of_nodes; /* from KFD, should be in the range [1 - NUM_OF_SUPPORTED_GPUS]*/ +}; + +#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