Annotation of sys/arch/i386/include/i82489var.h, Revision 1.1.1.1
1.1 nbrk 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
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