xref: /illumos-gate/usr/src/uts/common/sys/physmem.h (revision 2983dda76a6d296fdb560c88114fe41caad1b84f)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
30 
31 #ifdef	__cplusplus
32 extern "C" {
33 #endif
34 
35 /* ioctl values */
36 #define	PHYSMEM_SETUP 1
37 #define	PHYSMEM_MAP 2
38 #define	PHYSMEM_DESTROY 3
39 
40 /* flags values */
41 #define	PHYSMEM_CAGE	(1 << 0)
42 #define	PHYSMEM_RETIRED	(1 << 1)
43 
44 struct physmem_setup_param {
45 	uint64_t req_paddr;	/* requested physical address */
46 	uint64_t len;		/* length of memory to be allocated */
47 	uint64_t user_va;	/* VA to associate with req_paddr */
48 	uint64_t cookie;	/* cookie returned for destroy function */
49 };
50 
51 struct physmem_map_param {
52 	uint64_t req_paddr;	/* requested physical address */
53 	uint64_t ret_va;	/* VA which mapped req_paddr */
54 	uint32_t flags;		/* flags for cage or retired pages */
55 };
56 
57 #ifdef	__cplusplus
58 }
59 #endif
60 
61 #endif	/* _PHYSMEM_H */
62