xref: /titanic_44/usr/src/uts/common/sys/bscbus.h (revision 49b225e1cfa7bbf7738d4df0a03f18e3283426eb)
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  * Copyright 2001-2003 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef	_SYS_BSCBUS_H
27 #define	_SYS_BSCBUS_H
28 
29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
30 
31 #ifdef	__cplusplus
32 extern "C" {
33 #endif
34 
35 /*
36  * The bscbus nexus driver provides the same client interface as the lombus
37  * nexus driver.
38  */
39 #include <sys/lombus.h>
40 
41 /*
42  * Register spaces (as lombus.h but spaces now have a channel
43  * value encoded in it too)
44  *
45  *	Space*	Size	Range		Meaning
46  *		(bits)
47  *
48  *	xx00	8	[0 .. 16383]	LOM virtual registers
49  *	xx01	8	[0]		Watchdog pat (on write)
50  *	xx02	16	[0]		Async event info (read only)
51  *	All	32	[-4 .. -12]	Access handle fault info
52  *      * xx is the channel number.
53  */
54 
55 #define	LOMBUS_SPACE_TO_REGSET(rsp)	((rsp) & 0xff)
56 #define	LOMBUS_SPACE_TO_CHANNEL(rsp)	(((rsp) & 0xff00) >> 8)
57 #define	LOMBUS_SPACE(regset, channel)	((regset) | ((channel) << 8))
58 
59 #ifdef	__cplusplus
60 }
61 #endif
62 
63 #endif	/* _SYS_BSCBUS_H */
64