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