sys/arch/x86/include/i82489var.h

   1 /*      $NetBSD: i82489var.h,v 1.14 2011/06/12 03:35:50 rmind 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 extern volatile uint32_t lapic_tpr;
  45 #endif
  46
  47 static __inline uint32_t
  48 i82489_readreg(int reg)
  49 {
  50         return *((volatile uint32_t *)(((volatile uint8_t *)local_apic)
  51             + reg));
  52 }
  53
  54 static __inline void
  55 i82489_writereg(int reg, uint32_t val)
  56 {
  57         *((volatile uint32_t *)(((volatile uint8_t *)local_apic) + reg)) = val;
  58 }
  59
  60 #define lapic_cpu_number()      (i82489_readreg(LAPIC_ID) >> LAPIC_ID_SHIFT)
  61
  62 /*
  63  * "spurious interrupt vector"; vector used by interrupt which was
  64  * aborted because the CPU masked it after it happened but before it
  65  * was delivered.. "Oh, sorry, i caught you at a bad time".
  66  * Low-order 4 bits must be all ones.
  67  */
  68 extern void Xintrspurious(void);
  69 #define LAPIC_SPURIOUS_VECTOR           0xef
  70
  71 /*
  72  * Vectors used for inter-processor interrupts.
  73  */
  74 extern void Xintr_lapic_ipi(void);
  75 extern void Xrecurse_lapic_ipi(void);
  76 extern void Xresume_lapic_ipi(void);
  77 #define LAPIC_IPI_VECTOR                        0xe0
  78
  79 extern void Xintr_lapic_tlb(void);
  80 #define LAPIC_TLB_VECTOR                        0xe1
  81
  82 /*
  83  * Vector used for local apic timer interrupts.
  84  */
  85
  86 extern void Xintr_lapic_ltimer(void);
  87 extern void Xresume_lapic_ltimer(void);
  88 extern void Xrecurse_lapic_ltimer(void);
  89 #define LAPIC_TIMER_VECTOR              0xc0
  90
  91 /*
  92  * 'pin numbers' for local APIC
  93  */
  94 #define LAPIC_PIN_TIMER         0
  95 #define LAPIC_PIN_PCINT         2
  96 #define LAPIC_PIN_LVINT0        3
  97 #define LAPIC_PIN_LVINT1        4
  98 #define LAPIC_PIN_LVERR         5
  99
 100 extern void Xintr_lapic0(void);
 101 extern void Xintr_lapic2(void);
 102 extern void Xintr_lapic3(void);
 103 extern void Xintr_lapic4(void);
 104 extern void Xintr_lapic5(void);
 105
 106
 107 struct cpu_info;
 108
 109 extern void lapic_boot_init(paddr_t);
 110 extern void lapic_set_lvt(void);
 111 extern void lapic_enable(void);
 112 extern void lapic_calibrate_timer(struct cpu_info *ci);
 113 extern void lapic_initclocks(void);
 114
 115 #endif