xref: /titanic_44/usr/src/uts/sun4/sys/intreg.h (revision b7f45089ccbe01bab3d7c7377b49d80d2ae18a69)
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 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_INTREG_H
28 #define	_SYS_INTREG_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <sys/machintreg.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 #define	INO_SIZE	6		/* Interrupt Number Offset bit size */
39 #define	INR_SIZE	(IGN_SIZE + INO_SIZE)	/* Interrupt Number bit size */
40 #define	MAX_IGN		(1 << IGN_SIZE) /* max Interrupt Group Number size */
41 #define	MAX_INO		(1 << INO_SIZE) /* max Interrupt Number per group */
42 
43 /*
44  * MAX_SOFT_INO: Need two softints per cpu for cyclics plus some for
45  * miscellaneous system use.
46  */
47 #define	MAX_SOFT_INO	((NCPU * 2) + 192)
48 
49 #define	SOFTIVNUM	(MAX_IGN * MAX_INO)
50 #define	MAXIVNUM	(MAX_IGN * MAX_INO + MAX_SOFT_INO)
51 
52 /*
53  * Interrupt State Machine
54  *	Each interrupt source has a 2-bit state machine which ensures that
55  *	software sees exactly one interrupt packet per assertion of the
56  *	interrupt signal.
57  */
58 #define	ISM_IDLE	0x0	/* not asserted or pending */
59 #define	ISM_TRANSMIT	0x1	/* asserted but is not dispatched */
60 #define	ISM_PENDING	0x2	/* dispatched to a processor or is in transit */
61 
62 /*
63  * Per-Processor Soft Interrupt Register
64  * XXX use %asr when the new assembler supports them
65  */
66 #define	SET_SOFTINT	%asr20		/* ASR 0x14 */
67 #define	CLEAR_SOFTINT	%asr21		/* ASR 0x15 */
68 #define	SOFTINT		%asr22		/* ASR 0x16 */
69 #define	SOFTINT_MASK	0xFFFE		/* <15:1> */
70 #define	TICK_INT_MASK	0x1		/* <0> */
71 #define	STICK_INT_MASK	0x10000		/* <0> */
72 
73 /*
74  * Per-Processor TICK Register and TICK_Compare registers
75  *
76  */
77 #define	TICK_COMPARE	%asr23		/* ASR 0x17 */
78 #define	STICK		%asr24		/* ASR 0x18 */
79 #define	STICK_COMPARE	%asr25		/* ASR 0x19 */
80 #define	TICKINT_DIS_SHFT	0x3f
81 
82 #ifndef _ASM
83 
84 /*
85  * Interrupt Packet (mondo)
86  */
87 struct intr_packet {
88 	uint64_t intr_data0; /* can be an interrupt number or a pc */
89 	uint64_t intr_data1;
90 	uint64_t intr_data2;
91 };
92 
93 /*
94  * Leftover bogus stuff; removed them later
95  */
96 struct cpu_intreg {
97 	uint_t	pend;
98 	uint_t	clr_pend;
99 	uint_t	set_pend;
100 	uchar_t	filler[0x1000 - 0xc];
101 };
102 
103 struct sys_intreg {
104 	uint_t	sys_pend;
105 	uint_t	sys_m;
106 	uint_t	sys_mclear;
107 	uint_t	sys_mset;
108 	uint_t	itr;
109 };
110 
111 #endif  /* _ASM */
112 
113 #ifdef	__cplusplus
114 }
115 #endif
116 
117 #endif	/* _SYS_INTREG_H */
118