xref: /illumos-gate/usr/src/uts/common/sys/physmem.h (revision e82490700e19f1b8a2cef6102f4726144d281988)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 #ifndef	_PHYSMEM_H
27 #define	_PHYSMEM_H
28 
29 #ifdef	__cplusplus
30 extern "C" {
31 #endif
32 
33 /* ioctl values */
34 #define	PHYSMEM_SETUP 1
35 #define	PHYSMEM_MAP 2
36 #define	PHYSMEM_DESTROY 3
37 
38 /* flags values */
39 #define	PHYSMEM_CAGE	(1 << 0)
40 #define	PHYSMEM_RETIRED	(1 << 1)
41 
42 struct physmem_setup_param {
43 	uint64_t req_paddr;	/* requested physical address */
44 	uint64_t len;		/* length of memory to be allocated */
45 	uint64_t user_va;	/* VA to associate with req_paddr */
46 	uint64_t cookie;	/* cookie returned for destroy function */
47 };
48 
49 struct physmem_map_param {
50 	uint64_t req_paddr;	/* requested physical address */
51 	uint64_t ret_va;	/* VA which mapped req_paddr */
52 	uint32_t flags;		/* flags for cage or retired pages */
53 };
54 
55 #ifdef	__cplusplus
56 }
57 #endif
58 
59 #endif	/* _PHYSMEM_H */
60