1e2be04c7SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 27bd1d409SAlexander Shishkin /* 37bd1d409SAlexander Shishkin * System Trace Module (STM) userspace interfaces 47bd1d409SAlexander Shishkin * Copyright (c) 2014, Intel Corporation. 57bd1d409SAlexander Shishkin * 67bd1d409SAlexander Shishkin * STM class implements generic infrastructure for System Trace Module devices 77bd1d409SAlexander Shishkin * as defined in MIPI STPv2 specification. 87bd1d409SAlexander Shishkin */ 97bd1d409SAlexander Shishkin 107bd1d409SAlexander Shishkin #ifndef _UAPI_LINUX_STM_H 117bd1d409SAlexander Shishkin #define _UAPI_LINUX_STM_H 127bd1d409SAlexander Shishkin 137bd1d409SAlexander Shishkin #include <linux/types.h> 147bd1d409SAlexander Shishkin 154f0c7c6aSAlexander Shishkin /* Maximum allowed master and channel values */ 164f0c7c6aSAlexander Shishkin #define STP_MASTER_MAX 0xffff 174f0c7c6aSAlexander Shishkin #define STP_CHANNEL_MAX 0xffff 184f0c7c6aSAlexander Shishkin 197bd1d409SAlexander Shishkin /** 207bd1d409SAlexander Shishkin * struct stp_policy_id - identification for the STP policy 217bd1d409SAlexander Shishkin * @size: size of the structure including real id[] length 227bd1d409SAlexander Shishkin * @master: assigned master 237bd1d409SAlexander Shishkin * @channel: first assigned channel 247bd1d409SAlexander Shishkin * @width: number of requested channels 257bd1d409SAlexander Shishkin * @id: identification string 267bd1d409SAlexander Shishkin * 277bd1d409SAlexander Shishkin * User must calculate the total size of the structure and put it into 287bd1d409SAlexander Shishkin * @size field, fill out the @id and desired @width. In return, kernel 297bd1d409SAlexander Shishkin * fills out @master, @channel and @width. 307bd1d409SAlexander Shishkin */ 317bd1d409SAlexander Shishkin struct stp_policy_id { 327bd1d409SAlexander Shishkin __u32 size; 337bd1d409SAlexander Shishkin __u16 master; 347bd1d409SAlexander Shishkin __u16 channel; 357bd1d409SAlexander Shishkin __u16 width; 367bd1d409SAlexander Shishkin /* padding */ 377bd1d409SAlexander Shishkin __u16 __reserved_0; 387bd1d409SAlexander Shishkin __u32 __reserved_1; 39*94dfc73eSGustavo A. R. Silva char id[]; 407bd1d409SAlexander Shishkin }; 417bd1d409SAlexander Shishkin 427bd1d409SAlexander Shishkin #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id) 437bd1d409SAlexander Shishkin #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id) 447bd1d409SAlexander Shishkin #define STP_SET_OPTIONS _IOW('%', 2, __u64) 457bd1d409SAlexander Shishkin 467bd1d409SAlexander Shishkin #endif /* _UAPI_LINUX_STM_H */ 47