1/* 2 * Copyright (c) 2008-2010 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * @OSF_COPYRIGHT@ 30 */ 31 32#include <mach/mach_types.h> 33#include <mach/kern_return.h> 34 35#include <i386/lapic.h> 36#include <i386/cpuid.h> 37#include <i386/proc_reg.h> 38#include <i386/machine_cpu.h> 39#include <i386/misc_protos.h> 40#include <i386/mp.h> 41#include <i386/postcode.h> 42#include <i386/cpu_threads.h> 43#include <i386/machine_routines.h> 44#include <i386/tsc.h> 45 46#include <sys/kdebug.h> 47 48/* Base vector for local APIC interrupt sources */ 49int lapic_interrupt_base = LAPIC_DEFAULT_INTERRUPT_BASE; 50 51int lapic_to_cpu[MAX_LAPICIDS]; 52int cpu_to_lapic[MAX_CPUS]; 53 54void 55lapic_cpu_map_init(void) 56{ 57 int i; 58 59 for (i = 0; i < MAX_CPUS; i++) 60 cpu_to_lapic[i] = -1; 61 for (i = 0; i < MAX_LAPICIDS; i++) 62 lapic_to_cpu[i] = -1; 63} 64 65void 66lapic_cpu_map(int apic_id, int cpu) 67{ 68 assert(apic_id < MAX_LAPICIDS); 69 assert(cpu < MAX_CPUS); 70 cpu_to_lapic[cpu] = apic_id; 71 lapic_to_cpu[apic_id] = cpu; 72} 73 74/* 75 * Retrieve the local apic ID a cpu. 76 * 77 * Returns the local apic ID for the given processor. 78 * If the processor does not exist or apic not configured, returns -1. 79 */ 80 81uint32_t 82ml_get_apicid(uint32_t cpu) 83{ 84 if(cpu >= (uint32_t)MAX_CPUS) 85 return 0xFFFFFFFF; /* Return -1 if cpu too big */ 86 87 /* Return the apic ID (or -1 if not configured) */ 88 return (uint32_t)cpu_to_lapic[cpu]; 89 90} 91 92uint32_t 93ml_get_cpuid(uint32_t lapic_index) 94{ 95 if(lapic_index >= (uint32_t)MAX_LAPICIDS) 96 return 0xFFFFFFFF; /* Return -1 if cpu too big */ 97 98 /* Return the cpu ID (or -1 if not configured) */ 99 return (uint32_t)lapic_to_cpu[lapic_index]; 100 101} 102