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      1 /*	$NetBSD: i82489var.h,v 1.21 2020/05/21 21:12:30 ad 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 #ifdef _KERNEL
     40 extern volatile vaddr_t local_apic_va;
     41 extern bool x2apic_mode;
     42 #endif
     43 
     44 /*
     45  * "spurious interrupt vector"; vector used by interrupt which was
     46  * aborted because the CPU masked it after it happened but before it
     47  * was delivered.. "Oh, sorry, i caught you at a bad time".
     48  * Low-order 4 bits must be all ones.
     49  */
     50 extern void Xintrspurious(void);
     51 #define LAPIC_SPURIOUS_VECTOR		0xef
     52 
     53 /*
     54  * Vectors used for inter-processor interrupts.
     55  */
     56 extern void Xintr_lapic_ipi(void);
     57 extern void Xintr_x2apic_ipi(void);
     58 extern void Xrecurse_lapic_ipi(void);
     59 extern void Xresume_lapic_ipi(void);
     60 #define LAPIC_IPI_VECTOR			0xe0
     61 
     62 extern void Xintr_lapic_tlb(void);
     63 extern void Xintr_x2apic_tlb(void);
     64 #define LAPIC_TLB_VECTOR			0xe1
     65 
     66 /*
     67  * Vector used for local apic timer interrupts.
     68  */
     69 
     70 extern void Xintr_lapic_ltimer(void);
     71 extern void Xintr_x2apic_ltimer(void);
     72 extern void Xresume_lapic_ltimer(void);
     73 extern void Xrecurse_lapic_ltimer(void);
     74 #define LAPIC_TIMER_VECTOR		0xc0
     75 
     76 /*
     77  * 'pin numbers' for local APIC
     78  */
     79 #define LAPIC_PIN_TIMER		0
     80 #define LAPIC_PIN_PCINT		2
     81 #define LAPIC_PIN_LVINT0	3
     82 #define LAPIC_PIN_LVINT1	4
     83 #define LAPIC_PIN_LVERR		5
     84 
     85 
     86 struct cpu_info;
     87 
     88 extern void lapic_boot_init(paddr_t);
     89 extern void lapic_set_lvt(void);
     90 extern void lapic_enable(void);
     91 extern void lapic_calibrate_timer(bool);
     92 extern void lapic_reset(void);
     93 
     94 extern uint32_t lapic_readreg(u_int);
     95 extern void lapic_writereg(u_int, uint32_t);
     96 extern void lapic_write_tpri(uint32_t);
     97 extern uint32_t lapic_cpu_number(void);
     98 extern bool lapic_is_x2apic(void);
     99 
    100 #endif
    101