X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..d26ffc64f583ab2d29df48f13518685602bc8832:/osfmk/i386/cpu.c diff --git a/osfmk/i386/cpu.c b/osfmk/i386/cpu.c index dea338a3c..84cf06615 100644 --- a/osfmk/i386/cpu.c +++ b/osfmk/i386/cpu.c @@ -1,16 +1,19 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2009 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER @@ -20,7 +23,7 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * File: i386/cpu.c @@ -28,13 +31,24 @@ * cpu specific routines */ -#include +#include #include -#include -#include +#include #include +#include +#include +#include +#include +#include +#include +#include +#if CONFIG_VMX +#include +#endif +#include +#include -cpu_data_t cpu_data[NCPUS]; +struct processor processor_master; /*ARGSUSED*/ kern_return_t @@ -43,15 +57,16 @@ cpu_control( processor_info_t info, unsigned int count) { - printf("cpu_control not implemented\n"); + printf("cpu_control(%d,%p,%d) not implemented\n", + slot_num, info, count); return (KERN_FAILURE); } /*ARGSUSED*/ kern_return_t cpu_info_count( - processor_flavor_t flavor, - unsigned int *count) + __unused processor_flavor_t flavor, + unsigned int *count) { *count = 0; return (KERN_FAILURE); @@ -65,12 +80,194 @@ cpu_info( processor_info_t info, unsigned int *count) { - printf("cpu_info not implemented\n"); + printf("cpu_info(%d,%d,%p,%p) not implemented\n", + flavor, slot_num, info, count); return (KERN_FAILURE); } void -cpu_sleep() +cpu_sleep(void) +{ + cpu_data_t *cdp = current_cpu_datap(); + + PE_cpu_machine_quiesce(cdp->cpu_id); + + cpu_thread_halt(); +} + +void +cpu_init(void) +{ + cpu_data_t *cdp = current_cpu_datap(); + + timer_call_queue_init(&cdp->rtclock_timer.queue); + cdp->rtclock_timer.deadline = EndOfAllTime; + + cdp->cpu_type = cpuid_cputype(); + cdp->cpu_subtype = cpuid_cpusubtype(); + + i386_activate_cpu(); +} + +kern_return_t +cpu_start( + int cpu) +{ + kern_return_t ret; + + if (cpu == cpu_number()) { + cpu_machine_init(); + return KERN_SUCCESS; + } + + /* + * Try to bring the CPU back online without a reset. + * If the fast restart doesn't succeed, fall back to + * the slow way. + */ + ret = intel_startCPU_fast(cpu); + if (ret != KERN_SUCCESS) { + /* + * Should call out through PE. + * But take the shortcut here. + */ + ret = intel_startCPU(cpu); + } + + if (ret != KERN_SUCCESS) + kprintf("cpu: cpu_start(%d) returning failure!\n", cpu); + + return(ret); +} + +void +cpu_exit_wait( + int cpu) +{ + cpu_data_t *cdp = cpu_datap(cpu); + boolean_t intrs_enabled; + uint64_t tsc_timeout; + + /* + * Wait until the CPU indicates that it has stopped. + * Disable interrupts while the topo lock is held -- arguably + * this should always be done but in this instance it can lead to + * a timeout if long-running interrupt were to occur here. + */ + intrs_enabled = ml_set_interrupts_enabled(FALSE); + mp_safe_spin_lock(&x86_topo_lock); + /* Set a generous timeout of several seconds (in TSC ticks) */ + tsc_timeout = rdtsc64() + (10ULL * 1000 * 1000 * 1000); + while ((cdp->lcpu.state != LCPU_HALT) + && (cdp->lcpu.state != LCPU_OFF) + && !cdp->lcpu.stopped) { + simple_unlock(&x86_topo_lock); + ml_set_interrupts_enabled(intrs_enabled); + cpu_pause(); + if (rdtsc64() > tsc_timeout) + panic("cpu_exit_wait(%d) timeout", cpu); + ml_set_interrupts_enabled(FALSE); + mp_safe_spin_lock(&x86_topo_lock); + } + simple_unlock(&x86_topo_lock); + ml_set_interrupts_enabled(intrs_enabled); +} + +void +cpu_machine_init( + void) +{ + cpu_data_t *cdp = current_cpu_datap(); + + PE_cpu_machine_init(cdp->cpu_id, !cdp->cpu_boot_complete); + cdp->cpu_boot_complete = TRUE; + cdp->cpu_running = TRUE; + ml_init_interrupt(); + +#if CONFIG_VMX + /* initialize VMX for every CPU */ + vmx_cpu_init(); +#endif +} + +processor_t +cpu_processor_alloc(boolean_t is_boot_cpu) +{ + int ret; + processor_t proc; + + if (is_boot_cpu) + return &processor_master; + + ret = kmem_alloc(kernel_map, (vm_offset_t *) &proc, sizeof(*proc), VM_KERN_MEMORY_OSFMK); + if (ret != KERN_SUCCESS) + return NULL; + + bzero((void *) proc, sizeof(*proc)); + return proc; +} + +void +cpu_processor_free(processor_t proc) +{ + if (proc != NULL && proc != &processor_master) + kfree((void *) proc, sizeof(*proc)); +} + +processor_t +current_processor(void) +{ + return current_cpu_datap()->cpu_processor; +} + +processor_t +cpu_to_processor( + int cpu) +{ + return cpu_datap(cpu)->cpu_processor; +} + +ast_t * +ast_pending(void) +{ + return (¤t_cpu_datap()->cpu_pending_ast); +} + +cpu_type_t +slot_type( + int slot_num) +{ + return (cpu_datap(slot_num)->cpu_type); +} + +cpu_subtype_t +slot_subtype( + int slot_num) +{ + return (cpu_datap(slot_num)->cpu_subtype); +} + +cpu_threadtype_t +slot_threadtype( + int slot_num) +{ + return (cpu_datap(slot_num)->cpu_threadtype); +} + +cpu_type_t +cpu_type(void) +{ + return (current_cpu_datap()->cpu_type); +} + +cpu_subtype_t +cpu_subtype(void) +{ + return (current_cpu_datap()->cpu_subtype); +} + +cpu_threadtype_t +cpu_threadtype(void) { - printf("cpu_sleep not implemented\n"); + return (current_cpu_datap()->cpu_threadtype); }