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i82489var.h revision 1.18 
      1 /*	$NetBSD: i82489var.h,v 1.18 2017/04/22 04:29:31 nonaka 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 vaddr_t local_apic_va;
     44 #endif
     45 
     46 static __inline uint32_t
     47 i82489_readreg(int reg)
     48 {
     49 	return *((volatile uint32_t *)(local_apic_va + reg));
     50 }
     51 
     52 static __inline void
     53 i82489_writereg(int reg, uint32_t val)
     54 {
     55 	*((volatile uint32_t *)(local_apic_va + reg)) = val;
     56 }
     57 
     58 #define lapic_cpu_number() 	(i82489_readreg(LAPIC_ID) >> LAPIC_ID_SHIFT)
     59 
     60 /*
     61  * "spurious interrupt vector"; vector used by interrupt which was
     62  * aborted because the CPU masked it after it happened but before it
     63  * was delivered.. "Oh, sorry, i caught you at a bad time".
     64  * Low-order 4 bits must be all ones.
     65  */
     66 extern void Xintrspurious(void);
     67 #define LAPIC_SPURIOUS_VECTOR		0xef
     68 
     69 /*
     70  * Vectors used for inter-processor interrupts.
     71  */
     72 extern void Xintr_lapic_ipi(void);
     73 extern void Xrecurse_lapic_ipi(void);
     74 extern void Xresume_lapic_ipi(void);
     75 #define LAPIC_IPI_VECTOR			0xe0
     76 
     77 extern void Xintr_lapic_tlb(void);
     78 #define LAPIC_TLB_VECTOR			0xe1
     79 
     80 /*
     81  * Vector used for local apic timer interrupts.
     82  */
     83 
     84 extern void Xintr_lapic_ltimer(void);
     85 extern void Xresume_lapic_ltimer(void);
     86 extern void Xrecurse_lapic_ltimer(void);
     87 #define LAPIC_TIMER_VECTOR		0xc0
     88 
     89 /*
     90  * 'pin numbers' for local APIC
     91  */
     92 #define LAPIC_PIN_TIMER		0
     93 #define LAPIC_PIN_PCINT		2
     94 #define LAPIC_PIN_LVINT0	3
     95 #define LAPIC_PIN_LVINT1	4
     96 #define LAPIC_PIN_LVERR		5
     97 
     98 
     99 struct cpu_info;
    100 
    101 extern void lapic_boot_init(paddr_t);
    102 extern void lapic_set_lvt(void);
    103 extern void lapic_enable(void);
    104 extern void lapic_calibrate_timer(struct cpu_info *ci);
    105 extern void lapic_initclocks(void);
    106 
    107 extern void lapic_write_tpri(uint32_t);
    108 
    109 #endif
    110