1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
2 /*
3  * IOCTLs for Remoteproc's character device interface.
4  *
5  * Copyright (c) 2020, The Linux Foundation. All rights reserved.
6  */
7 
8 #ifndef _UAPI_REMOTEPROC_CDEV_H_
9 #define _UAPI_REMOTEPROC_CDEV_H_
10 
11 #include <linux/ioctl.h>
12 #include <linux/types.h>
13 
14 #define RPROC_MAGIC	0xB7
15 
16 /*
17  * The RPROC_SET_SHUTDOWN_ON_RELEASE ioctl allows to enable/disable the shutdown of a remote
18  * processor automatically when the controlling userpsace closes the char device interface.
19  *
20  * input parameter: integer
21  *   0		: disable automatic shutdown
22  *   other	: enable automatic shutdown
23  */
24 #define RPROC_SET_SHUTDOWN_ON_RELEASE _IOW(RPROC_MAGIC, 1, __s32)
25 
26 /*
27  * The RPROC_GET_SHUTDOWN_ON_RELEASE ioctl gets information about whether the automatic shutdown of
28  * a remote processor is enabled or disabled when the controlling userspace closes the char device
29  * interface.
30  *
31  * output parameter: integer
32  *   0		: automatic shutdown disable
33  *   other	: automatic shutdown enable
34  */
35 #define RPROC_GET_SHUTDOWN_ON_RELEASE _IOR(RPROC_MAGIC, 2, __s32)
36 
37 #endif
38