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/* $OpenBSD: i82489var.h,v 1.9 2008/06/26 05:42:10 ray Exp $ */
/* $NetBSD: i82489var.h,v 1.1.2.2 2000/02/21 18:46:14 sommerfeld Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _I386_I82489VAR_H_
#define _I386_I82489VAR_H_
static __inline__ u_int32_t i82489_readreg(int);
static __inline__ void i82489_writereg(int, u_int32_t);
#ifdef _KERNEL
extern volatile u_int32_t local_apic[];
#endif
static __inline__ u_int32_t
i82489_readreg(reg)
int reg;
{
return *((volatile u_int32_t *)(((volatile u_int8_t *)local_apic)
+ reg));
}
static __inline__ void
i82489_writereg(reg, val)
int reg;
u_int32_t val;
{
*((volatile u_int32_t *)(((volatile u_int8_t *)local_apic) + reg)) =
val;
/*
* intel xeon errata p53:
* write to a lapic register sometimes may appear to have not occured
* workaround:
* follow write with a read [from id register]
*/
val = *((volatile u_int32_t *)(((volatile u_int8_t *)local_apic) +
LAPIC_ID));
}
/*
* "spurious interrupt vector"; vector used by interrupt which was
* aborted because the CPU masked it after it happened but before it
* was delivered.. "Oh, sorry, i caught you at a bad time".
* Low-order 4 bits must be all ones.
*/
extern void i386_spurious(void);
extern void Xintrspurious(void);
#define LAPIC_SPURIOUS_VECTOR 0xef
/*
* Vector used for inter-processor interrupts.
*/
extern void Xintripi(void);
#define LAPIC_IPI_VECTOR IPL_IPI
/*
* Vector used for local apic timer interrupts.
*/
extern void Xintrltimer(void);
#define LAPIC_TIMER_VECTOR IPL_CLOCK
/*
* Vectors to be used for self-soft-interrupts.
*/
#define LAPIC_SOFTCLOCK_VECTOR IPL_SOFTCLOCK
#define LAPIC_SOFTNET_VECTOR IPL_SOFTNET
#define LAPIC_SOFTTTY_VECTOR IPL_SOFTTTY
/*
* Special IPI vectors. We can use IDT 0xf0 - 0xff for this.
*/
#define LAPIC_IPI_OFFSET 0xf0
#define LAPIC_IPI_INVLTLB (LAPIC_IPI_OFFSET + 0)
#define LAPIC_IPI_INVLPG (LAPIC_IPI_OFFSET + 1)
#define LAPIC_IPI_INVLRANGE (LAPIC_IPI_OFFSET + 2)
extern void Xintripi_invltlb(void);
extern void Xintripi_invlpg(void);
extern void Xintripi_invlrange(void);
extern void Xintrsoftclock(void);
extern void Xintrsoftnet(void);
extern void Xintrsofttty(void);
extern void (*apichandler[])(void);
struct cpu_info;
extern void lapic_boot_init(paddr_t);
extern void lapic_initclocks(void);
extern void lapic_set_lvt(void);
extern void lapic_set_softvectors(void);
extern void lapic_enable(void);
extern void lapic_calibrate_timer(struct cpu_info *);
#define lapic_cpu_number() (i82489_readreg(LAPIC_ID)>>LAPIC_ID_SHIFT)
#endif
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