xref: /illumos-gate/usr/src/uts/intel/io/amdzen/usmn.h (revision 4adf43b0b51d2123d4add8287f0e31facb0cbab1)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2022 Oxide Computer Company
14  */
15 
16 #ifndef _USMN_H
17 #define	_USMN_H
18 
19 /*
20  * Private ioctls for interfacing with the usmn driver.
21  */
22 
23 #ifdef __cplusplus
24 extern "C" {
25 #endif
26 
27 #define	USMN_IOCTL	(('u' << 24) | ('s' << 16) | ('m' << 8))
28 
29 #define	USMN_READ	(USMN_IOCTL | 0x01)
30 #define	USMN_WRITE	(USMN_IOCTL | 0x02)
31 
32 typedef struct usmn_reg {
33 	uint32_t usr_addr;
34 	uint32_t usr_data;
35 	uint32_t usr_size;
36 } usmn_reg_t;
37 
38 #ifdef __cplusplus
39 }
40 #endif
41 
42 #endif /* _USMN_H */
43