187 lines
4.4 KiB
C
187 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
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/*
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* Copyright (c) 2019, The Linux Foundation. All rights reserved.
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* Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __UAPI_SYNX_H__
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#define __UAPI_SYNX_H__
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#include <linux/types.h>
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#include <linux/ioctl.h>
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/* Size of opaque payload sent to kernel for safekeeping until signal time */
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#define SYNX_USER_PAYLOAD_SIZE 4
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#define SYNX_STATE_INVALID 0
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#define SYNX_STATE_ACTIVE 1
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#define SYNX_STATE_SIGNALED_SUCCESS 2
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#define SYNX_STATE_SIGNALED_ERROR 3
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#define SYNX_STATE_SIGNALED_CANCEL 4
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#define SYNX_STATE_SIGNALED_EXTERNAL 5
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#define SYNX_MAX_WAITING_SYNX 16
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#define SYNX_CALLBACK_RESULT_SUCCESS 2
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#define SYNX_CALLBACK_RESULT_FAILED 3
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#define SYNX_CALLBACK_RESULT_CANCELED 4
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/**
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* type of external sync object
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*
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* SYNX_TYPE_CSL : Object is a CSL sync object
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*/
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#define SYNX_TYPE_CSL 0
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#define SYNX_MAX_BIND_TYPES 1
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/**
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* struct synx_info - Sync object creation information
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*
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* @name : Optional string representation of the synx object
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* @synx_obj : Sync object returned after creation in kernel
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*/
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struct synx_info {
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char name[64];
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__s32 synx_obj;
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};
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/**
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* struct synx_userpayload_info - Payload info from user space
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*
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* @synx_obj: Sync object for which payload has to be registered for
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* @reserved: Reserved
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* @payload: Pointer to user payload
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*/
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struct synx_userpayload_info {
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__s32 synx_obj;
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__u32 reserved;
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__u64 payload[SYNX_USER_PAYLOAD_SIZE];
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};
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/**
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* struct synx_signal - Sync object signaling struct
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*
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* @synx_obj : Sync object to be signaled
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* @synx_state : State of the synx object to which it should be signaled
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*/
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struct synx_signal {
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__s32 synx_obj;
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__u32 synx_state;
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};
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/**
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* struct synx_merge - Merge information for synx objects
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*
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* @synx_objs : Pointer to synx object array to merge
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* @num_objs : Number of objects in the array
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* @merged : Merged synx object
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*/
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struct synx_merge {
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__u64 synx_objs;
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__u32 num_objs;
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__s32 merged;
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};
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/**
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* struct synx_wait - Sync object wait information
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*
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* @synx_obj : Sync object to wait on
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* @reserved : Reserved
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* @timeout_ms : Timeout in milliseconds
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*/
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struct synx_wait {
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__s32 synx_obj;
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__u32 reserved;
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__u64 timeout_ms;
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};
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/**
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* struct synx_external_desc - info of external sync object
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*
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* @type : Synx type
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* @reserved : Reserved
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* @id : Sync object id
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*
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*/
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struct synx_external_desc {
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__u32 type;
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__u32 reserved;
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__s32 id[2];
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};
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/**
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* struct synx_bind - info for binding two synx objects
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*
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* @synx_obj : Synx object
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* @Reserved : Reserved
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* @ext_sync_desc : External synx to bind to
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*
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*/
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struct synx_bind {
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__s32 synx_obj;
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__u32 reserved;
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struct synx_external_desc ext_sync_desc;
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};
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/**
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* struct synx_addrefcount - info for refcount increment
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*
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* @synx_obj : Synx object
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* @count : Count to increment
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*
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*/
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struct synx_addrefcount {
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__s32 synx_obj;
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__u32 count;
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};
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/**
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* struct synx_id_info - info for import and export of a synx object
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*
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* @synx_obj : Synx object to be exported
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* @secure_key : Secure key created in export and used in import
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* @new_synx_obj : Synx object created in import
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*
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*/
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struct synx_id_info {
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__s32 synx_obj;
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__u32 secure_key;
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__s32 new_synx_obj;
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__u32 padding;
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};
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/**
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* struct synx_private_ioctl_arg - Sync driver ioctl argument
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*
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* @id : IOCTL command id
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* @size : Size of command payload
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* @result : Result of command execution
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* @reserved : Reserved
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* @ioctl_ptr : Pointer to user data
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*/
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struct synx_private_ioctl_arg {
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__u32 id;
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__u32 size;
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__u32 result;
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__u32 reserved;
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__u64 ioctl_ptr;
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};
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#define SYNX_PRIVATE_MAGIC_NUM 's'
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#define SYNX_PRIVATE_IOCTL_CMD \
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_IOWR(SYNX_PRIVATE_MAGIC_NUM, 130, struct synx_private_ioctl_arg)
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#define SYNX_CREATE 0
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#define SYNX_RELEASE 1
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#define SYNX_SIGNAL 2
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#define SYNX_MERGE 3
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#define SYNX_REGISTER_PAYLOAD 4
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#define SYNX_DEREGISTER_PAYLOAD 5
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#define SYNX_WAIT 6
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#define SYNX_BIND 7
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#define SYNX_ADDREFCOUNT 8
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#define SYNX_GETSTATUS 9
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#define SYNX_IMPORT 10
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#define SYNX_EXPORT 11
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#endif /* __UAPI_SYNX_H__ */
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