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