1 /* $OpenBSD: i82489var.h,v 1.6 2007/05/26 22:09:17 weingart Exp $ */
2 /* $NetBSD: i82489var.h,v 1.1.2.2 2000/02/21 18:46:14 sommerfeld Exp $ */
3
4 /*-
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Frank van der Linden.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #ifndef _I386_I82489VAR_H_
41 #define _I386_I82489VAR_H_
42
43 static __inline__ u_int32_t i82489_readreg(int);
44 static __inline__ void i82489_writereg(int, u_int32_t);
45
46 #ifdef _KERNEL
47 extern volatile u_int32_t local_apic[];
48 #endif
49
50 static __inline__ u_int32_t
51 i82489_readreg(reg)
52 int reg;
53 {
54 return *((volatile u_int32_t *)(((volatile u_int8_t *)local_apic)
55 + reg));
56 }
57
58 static __inline__ void
59 i82489_writereg(reg, val)
60 int reg;
61 u_int32_t val;
62 {
63 *((volatile u_int32_t *)(((volatile u_int8_t *)local_apic) + reg)) =
64 val;
65 /*
66 * intel xeon errata p53:
67 * write to a lapic register sometimes may appear to have not occured
68 * workaround:
69 * follow write with a read [from id register]
70 */
71 val = *((volatile u_int32_t *)(((volatile u_int8_t *)local_apic) +
72 LAPIC_ID));
73 }
74
75 /*
76 * "spurious interrupt vector"; vector used by interrupt which was
77 * aborted because the CPU masked it after it happened but before it
78 * was delivered.. "Oh, sorry, i caught you at a bad time".
79 * Low-order 4 bits must be all ones.
80 */
81 extern void i386_spurious(void);
82 extern void Xintrspurious(void);
83 #define LAPIC_SPURIOUS_VECTOR 0xef
84
85 /*
86 * Vector used for inter-processor interrupts.
87 */
88 extern void Xintripi(void);
89 #define LAPIC_IPI_VECTOR IPL_IPI
90
91 /*
92 * Vector used for local apic timer interrupts.
93 */
94
95 extern void Xintrltimer(void);
96 #define LAPIC_TIMER_VECTOR IPL_CLOCK
97
98 /*
99 * Vectors to be used for self-soft-interrupts.
100 */
101
102 #define LAPIC_SOFTCLOCK_VECTOR IPL_SOFTCLOCK
103 #define LAPIC_SOFTNET_VECTOR IPL_SOFTNET
104 #define LAPIC_SOFTTTY_VECTOR IPL_SOFTTTY
105 #define LAPIC_SOFTAST_VECTOR IPL_SOFTAST
106
107 /*
108 * Special IPI vectors. We can use IDT 0xf0 - 0xff for this.
109 */
110 #define LAPIC_IPI_OFFSET 0xf0
111 #define LAPIC_IPI_AST (LAPIC_IPI_OFFSET + 0)
112 #define LAPIC_IPI_INVLTLB (LAPIC_IPI_OFFSET + 1)
113 #define LAPIC_IPI_INVLPG (LAPIC_IPI_OFFSET + 2)
114 #define LAPIC_IPI_INVLRANGE (LAPIC_IPI_OFFSET + 3)
115
116 extern void Xintripi_ast(void);
117 extern void Xintripi_invltlb(void);
118 extern void Xintripi_invlpg(void);
119 extern void Xintripi_invlrange(void);
120
121 extern void Xintrsoftclock(void);
122 extern void Xintrsoftnet(void);
123 extern void Xintrsofttty(void);
124 extern void Xintrsoftast(void);
125
126 extern void (*apichandler[])(void);
127
128 struct cpu_info;
129
130 extern void lapic_boot_init(paddr_t);
131 extern void lapic_initclocks(void);
132 extern void lapic_set_lvt(void);
133 extern void lapic_set_softvectors(void);
134 extern void lapic_enable(void);
135 extern void lapic_calibrate_timer(struct cpu_info *);
136
137 #define lapic_cpu_number() (i82489_readreg(LAPIC_ID)>>LAPIC_ID_SHIFT)
138
139 #endif