xref: /illumos-gate/usr/src/uts/sun4/sys/iommutsb.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 2000 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #ifndef _SYS_IOMMUTSB_H
28 #define	_SYS_IOMMUTSB_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <sys/types.h>
33 
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37 
38 #ifdef _KERNEL
39 
40 /*
41  * IOMMU TSB allocation.
42  */
43 
44 /* These four function comprise the interface for the nexus drivers. */
45 #define	IOMMU_TSB_COOKIE_NONE	((uint16_t)-1)
46 extern uint16_t iommu_tsb_alloc(uint16_t);
47 extern void iommu_tsb_free(uint16_t);
48 extern uint64_t *iommu_tsb_cookie_to_va(uint16_t);
49 extern uint_t iommu_tsb_cookie_to_size(uint16_t);
50 
51 /* iommu_tsb_init() is called during startup. */
52 extern caddr_t iommu_tsb_init(caddr_t);
53 
54 #endif /* _KERNEL */
55 
56 #ifdef __cplusplus
57 }
58 #endif
59 
60 #endif	/* _SYS_IOMMUTSB_H */
61