osfmk/ppc/hibernate_ppc.c

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 #include <kern/kern_types.h>
  24 #include <kern/kalloc.h>
  25 #include <kern/machine.h>
  26 #include <kern/misc_protos.h>
  27 #include <kern/thread.h>
  28 #include <kern/processor.h>
  29 #include <mach/machine.h>
  30 #include <mach/processor_info.h>
  31 #include <mach/mach_types.h>
  32 #include <ppc/proc_reg.h>
  33 #include <ppc/misc_protos.h>
  34 #include <ppc/machine_routines.h>
  35 #include <ppc/machine_cpu.h>
  36 #include <ppc/exception.h>
  37 #include <ppc/asm.h>
  38 #include <ppc/hw_perfmon.h>
  39 #include <pexpert/pexpert.h>
  40 #include <kern/cpu_data.h>
  41 #include <ppc/mappings.h>
  42 #include <ppc/Diagnostics.h>
  43 #include <ppc/trap.h>
  44 #include <ppc/mem.h>
  45 #include <IOKit/IOPlatformExpert.h>
  46 #define KERNEL
  47
  48 #include <IOKit/IOHibernatePrivate.h>
  49 #include <vm/vm_page.h>
  50
  51 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  52
  53 hibernate_page_list_t *
  54 hibernate_page_list_allocate(void)
  55 {
  56     vm_size_t               size;
  57     uint32_t                bank;
  58     uint32_t                pages, page_count;
  59     hibernate_page_list_t * list;
  60     hibernate_bitmap_t *    bitmap;
  61
  62     page_count = 0;
  63     size = sizeof(hibernate_page_list_t);
  64
  65     for (bank = 0; bank < (uint32_t) pmap_mem_regions_count; bank++)
  66     {
  67         size += sizeof(hibernate_bitmap_t);
  68         pages = pmap_mem_regions[bank].mrEnd + 1 - pmap_mem_regions[bank].mrStart;
  69         page_count += pages;
  70         size += ((pages + 31) >> 5) * sizeof(uint32_t);
  71     }
  72
  73     list = kalloc(size);
  74     if (!list)
  75         return (list);
  76
  77     list->list_size  = size;
  78     list->page_count = page_count;
  79     list->bank_count = pmap_mem_regions_count;
  80
  81     bitmap = &list->bank_bitmap[0];
  82     for (bank = 0; bank < list->bank_count; bank++)
  83     {
  84         bitmap->first_page  =  pmap_mem_regions[bank].mrStart;
  85         bitmap->last_page   =  pmap_mem_regions[bank].mrEnd;
  86         bitmap->bitmapwords = (pmap_mem_regions[bank].mrEnd + 1
  87                              - pmap_mem_regions[bank].mrStart + 31) >> 5;
  88
  89         bitmap = (hibernate_bitmap_t *) &bitmap->bitmap[bitmap->bitmapwords];
  90     }
  91     return (list);
  92 }
  93
  94 void
  95 hibernate_page_list_setall_machine(hibernate_page_list_t * page_list,
  96                                     hibernate_page_list_t * page_list_wired,
  97                                     uint32_t * pagesOut)
  98 {
  99     uint32_t page, count, PCAsize;
 100
 101     /* Get total size of PCA table */
 102     PCAsize = round_page((hash_table_size / PerProcTable[0].ppe_vaddr->pf.pfPTEG)
 103                           * sizeof(PCA_t));
 104
 105     page = atop_64(hash_table_base - PCAsize);
 106     count = atop_64(hash_table_size + PCAsize);
 107
 108     hibernate_set_page_state(page_list, page_list_wired, page, count, 0);
 109     pagesOut -= count;
 110
 111     HIBLOG("removed hash, pca: %d pages\n", count);
 112
 113     save_snapshot();
 114 }
 115
 116 kern_return_t
 117 hibernate_processor_setup(IOHibernateImageHeader * header)
 118 {
 119     header->processorFlags = PerProcTable[0].ppe_vaddr->pf.Available;
 120
 121     PerProcTable[0].ppe_vaddr->hibernate = 1;
 122
 123     return (KERN_SUCCESS);
 124 }
 125
 126 void
 127 hibernate_vm_lock(void)
 128 {
 129     if (getPerProc()->hibernate)
 130     {
 131         vm_page_lock_queues();
 132         mutex_lock(&vm_page_queue_free_lock);
 133     }
 134 }
 135
 136 void
 137 hibernate_vm_unlock(void)
 138 {
 139     if (getPerProc()->hibernate)
 140     {
 141         mutex_unlock(&vm_page_queue_free_lock);
 142         vm_page_unlock_queues();
 143     }
 144 }
 145
 146 void ml_ppc_sleep(void)
 147 {
 148     struct per_proc_info *proc_info;
 149     boolean_t dohalt;
 150
 151     proc_info = getPerProc();
 152     if (!proc_info->hibernate)
 153     {
 154         ml_ppc_do_sleep();
 155         return;
 156     }
 157
 158     {
 159         uint64_t start, end, nsec;
 160
 161         HIBLOG("mapping_hibernate_flush start\n");
 162         clock_get_uptime(&start);
 163
 164         mapping_hibernate_flush();
 165
 166         clock_get_uptime(&end);
 167         absolutetime_to_nanoseconds(end - start, &nsec);
 168         HIBLOG("mapping_hibernate_flush time: %qd ms\n", nsec / 1000000ULL);
 169     }
 170
 171     dohalt = hibernate_write_image();
 172
 173     if (dohalt)
 174     {
 175         // off
 176         HIBLOG("power off\n");
 177         if (PE_halt_restart)
 178             (*PE_halt_restart)(kPEHaltCPU);
 179     }
 180     else
 181     {
 182         // sleep
 183         HIBLOG("sleep\n");
 184
 185         // should we come back via regular wake, set the state in memory.
 186         PerProcTable[0].ppe_vaddr->hibernate = 0;
 187
 188         PE_cpu_machine_quiesce(proc_info->cpu_id);
 189         return;
 190     }
 191 }
 192