/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * System Trace Module (STM) userspace interfaces * Copyright (c) 2014, Intel Corporation. * * STM class implements generic infrastructure for System Trace Module devices * as defined in MIPI STPv2 specification. */ #ifndef _UAPI_LINUX_STM_H #define _UAPI_LINUX_STM_H #include <linux/types.h> /* Maximum allowed master and channel values */ #define STP_MASTER_MAX 0xffff #define STP_CHANNEL_MAX 0xffff /** * struct stp_policy_id - identification for the STP policy * @size: size of the structure including real id[] length * @master: assigned master * @channel: first assigned channel * @width: number of requested channels * @id: identification string * * User must calculate the total size of the structure and put it into * @size field, fill out the @id and desired @width. In return, kernel * fills out @master, @channel and @width. */ struct stp_policy_id { __u32 size; __u16 master; __u16 channel; __u16 width; /* padding */ __u16 __reserved_0; __u32 __reserved_1; char id[]; }; #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id) #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id) #define STP_SET_OPTIONS _IOW('%', 2, __u64) #endif /* _UAPI_LINUX_STM_H */