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i82489var.h revision 1.2 
      1 /*	$NetBSD: i82489var.h,v 1.2 2002/10/01 12:57:06 fvdl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _I386_I82489REG_H_
     40 #define _I386_I82489REG_H_
     41 
     42 /*
     43  * Software definitions belonging to Local APIC driver.
     44  */
     45 
     46 static __inline__ u_int32_t i82489_readreg __P((int));
     47 static __inline__ void i82489_writereg __P((int, u_int32_t));
     48 
     49 #ifdef _KERNEL
     50 extern volatile u_int32_t local_apic[];
     51 #endif
     52 
     53 static __inline__ u_int32_t
     54 i82489_readreg(reg)
     55 	int reg;
     56 {
     57 	return *((volatile u_int32_t *)(((volatile u_int8_t *)local_apic)
     58 	    + reg));
     59 }
     60 
     61 static __inline__ void
     62 i82489_writereg(reg, val)
     63 	int reg;
     64 	u_int32_t val;
     65 {
     66 	*((volatile u_int32_t *)(((volatile u_int8_t *)local_apic) + reg)) = val;
     67 }
     68 
     69 #define lapic_cpu_number() 	(i82489_readreg(LAPIC_ID)>>LAPIC_ID_SHIFT)
     70 
     71 /*
     72  * "spurious interrupt vector"; vector used by interrupt which was
     73  * aborted because the CPU masked it after it happened but before it
     74  * was delivered.. "Oh, sorry, i caught you at a bad time".
     75  * Low-order 4 bits must be all ones.
     76  */
     77 extern void i386_spurious(void);
     78 extern void Xintrspurious(void);
     79 #define LAPIC_SPURIOUS_VECTOR		0xef
     80 
     81 /*
     82  * Vector used for inter-processor interrupts.
     83  */
     84 extern void Xintripi(void);
     85 #define LAPIC_IPI_VECTOR			0xe0
     86 
     87 /*
     88  * Vector used for local apic timer interrupts.
     89  */
     90 
     91 extern void Xintrltimer(void);
     92 #define LAPIC_TIMER_VECTOR		0xd0
     93 
     94 extern void (*apichandler[]) __P((void));
     95 
     96 struct cpu_info;
     97 
     98 extern void lapic_boot_init __P((paddr_t));
     99 extern void lapic_set_lvt __P((void));
    100 extern void lapic_enable __P((void));
    101 extern void lapic_calibrate_timer __P((struct cpu_info *ci));
    102 extern void lapic_initclocks __P((void));
    103 
    104 #endif
    105 
    106