1/* 2 * Copyright (c) 2004-2005 Apple Computer, 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#include <kern/kalloc.h> 30#include <kern/machine.h> 31#include <kern/misc_protos.h> 32#include <kern/thread.h> 33#include <kern/processor.h> 34#include <mach/machine.h> 35#include <mach/processor_info.h> 36#include <mach/mach_types.h> 37#include <default_pager/default_pager_internal.h> 38#include <IOKit/IOPlatformExpert.h> 39 40#include <IOKit/IOHibernatePrivate.h> 41#include <vm/vm_page.h> 42#include <vm/vm_pageout.h> 43#include <vm/vm_purgeable_internal.h> 44 45/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 46 47kern_return_t 48hibernate_setup(IOHibernateImageHeader * header, 49 uint32_t free_page_ratio, 50 uint32_t free_page_time, 51 boolean_t vmflush, 52 hibernate_page_list_t ** page_list_ret, 53 hibernate_page_list_t ** page_list_wired_ret, 54 hibernate_page_list_t ** page_list_pal_ret) 55{ 56 hibernate_page_list_t * page_list = NULL; 57 hibernate_page_list_t * page_list_wired = NULL; 58 hibernate_page_list_t * page_list_pal = NULL; 59 uint32_t gobble_count; 60 61 *page_list_ret = NULL; 62 *page_list_wired_ret = NULL; 63 *page_list_pal_ret = NULL; 64 65 if (vmflush && dp_isssd) 66 hibernate_flush_memory(); 67 68 page_list = hibernate_page_list_allocate(TRUE); 69 if (!page_list) 70 return (KERN_RESOURCE_SHORTAGE); 71 page_list_wired = hibernate_page_list_allocate(FALSE); 72 if (!page_list_wired) 73 { 74 kfree(page_list, page_list->list_size); 75 return (KERN_RESOURCE_SHORTAGE); 76 } 77 page_list_pal = hibernate_page_list_allocate(FALSE); 78 if (!page_list_pal) 79 { 80 kfree(page_list, page_list->list_size); 81 kfree(page_list_wired, page_list_wired->list_size); 82 return (KERN_RESOURCE_SHORTAGE); 83 } 84 85 // pages we could force out to reduce hibernate image size 86 gobble_count = (uint32_t)((((uint64_t) page_list->page_count) * ((uint64_t) free_page_ratio)) / 100); 87 88 // no failures hereafter 89 90 hibernate_processor_setup(header); 91 92 if (gobble_count) 93 hibernate_gobble_pages(gobble_count, free_page_time); 94 95 HIBLOG("hibernate_alloc_pages act %d, inact %d, anon %d, throt %d, spec %d, wire %d, wireinit %d\n", 96 vm_page_active_count, vm_page_inactive_count, 97 vm_page_anonymous_count, vm_page_throttled_count, vm_page_speculative_count, 98 vm_page_wire_count, vm_page_wire_count_initial); 99 100 *page_list_ret = page_list; 101 *page_list_wired_ret = page_list_wired; 102 *page_list_pal_ret = page_list_pal; 103 104 return (KERN_SUCCESS); 105} 106 107kern_return_t 108hibernate_teardown(hibernate_page_list_t * page_list, 109 hibernate_page_list_t * page_list_wired, 110 hibernate_page_list_t * page_list_pal) 111{ 112 hibernate_free_gobble_pages(); 113 114 if (page_list) 115 kfree(page_list, page_list->list_size); 116 if (page_list_wired) 117 kfree(page_list_wired, page_list_wired->list_size); 118 if (page_list_pal) 119 kfree(page_list_pal, page_list_pal->list_size); 120 121 return (KERN_SUCCESS); 122} 123 124