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 <IOKit/IOPlatformExpert.h>
38
39#include <IOKit/IOHibernatePrivate.h>
40#include <vm/vm_page.h>
41#include <vm/vm_pageout.h>
42#include <vm/vm_purgeable_internal.h>
43#include <vm/vm_compressor.h>
44
45/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
46
47boolean_t need_to_unlock_decompressor = FALSE;
48
49kern_return_t
50hibernate_alloc_page_lists(
51 hibernate_page_list_t ** page_list_ret,
52 hibernate_page_list_t ** page_list_wired_ret,
53 hibernate_page_list_t ** page_list_pal_ret)
54{
55 kern_return_t retval = KERN_SUCCESS;
56
57 hibernate_page_list_t * page_list = NULL;
58 hibernate_page_list_t * page_list_wired = NULL;
59 hibernate_page_list_t * page_list_pal = NULL;
60
61 page_list = hibernate_page_list_allocate(TRUE);
62 if (!page_list) {
63
64 retval = KERN_RESOURCE_SHORTAGE;
65 goto done;
66 }
67 page_list_wired = hibernate_page_list_allocate(FALSE);
68 if (!page_list_wired)
69 {
70 kfree(page_list, page_list->list_size);
71
72 retval = KERN_RESOURCE_SHORTAGE;
73 goto done;
74 }
75 page_list_pal = hibernate_page_list_allocate(FALSE);
76 if (!page_list_pal)
77 {
78 kfree(page_list, page_list->list_size);
79 kfree(page_list_wired, page_list_wired->list_size);
80
81 retval = KERN_RESOURCE_SHORTAGE;
82 goto done;
83 }
84 *page_list_ret = page_list;
85 *page_list_wired_ret = page_list_wired;
86 *page_list_pal_ret = page_list_pal;
87
88done:
89 return (retval);
90
91}
92
93extern int sync_internal(void);
94
95kern_return_t
96hibernate_setup(IOHibernateImageHeader * header,
97 boolean_t vmflush,
98 hibernate_page_list_t * page_list __unused,
99 hibernate_page_list_t * page_list_wired __unused,
100 hibernate_page_list_t * page_list_pal __unused)
101{
102 kern_return_t retval = KERN_SUCCESS;
103
104 hibernate_create_paddr_map();
105
106 hibernate_reset_stats();
107
108 if (vmflush && VM_CONFIG_COMPRESSOR_IS_PRESENT) {
109
110 sync_internal();
111
112 vm_decompressor_lock();
113 need_to_unlock_decompressor = TRUE;
114
115 hibernate_flush_memory();
116 }
117
118 // no failures hereafter
119
120 hibernate_processor_setup(header);
121
122 HIBLOG("hibernate_alloc_pages act %d, inact %d, anon %d, throt %d, spec %d, wire %d, wireinit %d\n",
123 vm_page_active_count, vm_page_inactive_count,
124 vm_page_anonymous_count, vm_page_throttled_count, vm_page_speculative_count,
125 vm_page_wire_count, vm_page_wire_count_initial);
126
127 if (retval != KERN_SUCCESS && need_to_unlock_decompressor == TRUE) {
128 need_to_unlock_decompressor = FALSE;
129 vm_decompressor_unlock();
130 }
131 return (retval);
132}
133
134kern_return_t
135hibernate_teardown(hibernate_page_list_t * page_list,
136 hibernate_page_list_t * page_list_wired,
137 hibernate_page_list_t * page_list_pal)
138{
139 hibernate_free_gobble_pages();
140
141 if (page_list)
142 kfree(page_list, page_list->list_size);
143 if (page_list_wired)
144 kfree(page_list_wired, page_list_wired->list_size);
145 if (page_list_pal)
146 kfree(page_list_pal, page_list_pal->list_size);
147
148 if (VM_CONFIG_COMPRESSOR_IS_PRESENT) {
149 if (need_to_unlock_decompressor == TRUE) {
150 need_to_unlock_decompressor = FALSE;
151 vm_decompressor_unlock();
152 }
153 vm_compressor_delay_trim();
154 }
155 return (KERN_SUCCESS);
156}
157