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i82489var.h revision 1.14.34.1 
      1 /*	$NetBSD: i82489var.h,v 1.14.34.1 2016/11/04 14:49:06 pgoyette 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _X86_I82489VAR_H_
     33 #define _X86_I82489VAR_H_
     34 
     35 /*
     36  * Software definitions belonging to Local APIC driver.
     37  */
     38 
     39 static __inline uint32_t i82489_readreg(int);
     40 static __inline void i82489_writereg(int, uint32_t);
     41 
     42 #ifdef _KERNEL
     43 extern volatile uint32_t local_apic[];
     44 #endif
     45 
     46 static __inline uint32_t
     47 i82489_readreg(int reg)
     48 {
     49 	return *((volatile uint32_t *)(((volatile uint8_t *)local_apic)
     50 	    + reg));
     51 }
     52 
     53 static __inline void
     54 i82489_writereg(int reg, uint32_t val)
     55 {
     56 	*((volatile uint32_t *)(((volatile uint8_t *)local_apic) + reg)) = val;
     57 }
     58 
     59 #define lapic_cpu_number() 	(i82489_readreg(LAPIC_ID) >> LAPIC_ID_SHIFT)
     60 
     61 /*
     62  * "spurious interrupt vector"; vector used by interrupt which was
     63  * aborted because the CPU masked it after it happened but before it
     64  * was delivered.. "Oh, sorry, i caught you at a bad time".
     65  * Low-order 4 bits must be all ones.
     66  */
     67 extern void Xintrspurious(void);
     68 #define LAPIC_SPURIOUS_VECTOR		0xef
     69 
     70 /*
     71  * Vectors used for inter-processor interrupts.
     72  */
     73 extern void Xintr_lapic_ipi(void);
     74 extern void Xrecurse_lapic_ipi(void);
     75 extern void Xresume_lapic_ipi(void);
     76 #define LAPIC_IPI_VECTOR			0xe0
     77 
     78 extern void Xintr_lapic_tlb(void);
     79 #define LAPIC_TLB_VECTOR			0xe1
     80 
     81 /*
     82  * Vector used for local apic timer interrupts.
     83  */
     84 
     85 extern void Xintr_lapic_ltimer(void);
     86 extern void Xresume_lapic_ltimer(void);
     87 extern void Xrecurse_lapic_ltimer(void);
     88 #define LAPIC_TIMER_VECTOR		0xc0
     89 
     90 /*
     91  * 'pin numbers' for local APIC
     92  */
     93 #define LAPIC_PIN_TIMER		0
     94 #define LAPIC_PIN_PCINT		2
     95 #define LAPIC_PIN_LVINT0	3
     96 #define LAPIC_PIN_LVINT1	4
     97 #define LAPIC_PIN_LVERR		5
     98 
     99 extern void Xintr_lapic0(void);
    100 extern void Xintr_lapic2(void);
    101 extern void Xintr_lapic3(void);
    102 extern void Xintr_lapic4(void);
    103 extern void Xintr_lapic5(void);
    104 
    105 
    106 struct cpu_info;
    107 
    108 extern void lapic_boot_init(paddr_t);
    109 extern void lapic_set_lvt(void);
    110 extern void lapic_enable(void);
    111 extern void lapic_calibrate_timer(struct cpu_info *ci);
    112 extern void lapic_initclocks(void);
    113 
    114 #endif
    115