arch/x86/include/asm/suspend_64.h

   1 /*
   2  * Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
   3  * Based on code
   4  * Copyright 2001 Patrick Mochel <mochel@osdl.org>
   5  */
   6 #ifndef _ASM_X86_SUSPEND_64_H
   7 #define _ASM_X86_SUSPEND_64_H
   8
   9 #include <asm/desc.h>
  10 #include <asm/i387.h>
  11
  12 static inline int arch_prepare_suspend(void)
  13 {
  14         return 0;
  15 }
  16
  17 /*
  18  * Image of the saved processor state, used by the low level ACPI suspend to
  19  * RAM code and by the low level hibernation code.
  20  *
  21  * If you modify it, fix arch/x86/kernel/acpi/wakeup_64.S and make sure that
  22  * __save/__restore_processor_state(), defined in arch/x86/kernel/suspend_64.c,
  23  * still work as required.
  24  */
  25 struct saved_context {
  26         struct pt_regs regs;
  27         u16 ds, es, fs, gs, ss;
  28         unsigned long gs_base, gs_kernel_base, fs_base;
  29         unsigned long cr0, cr2, cr3, cr4, cr8;
  30         u64 misc_enable;
  31         bool misc_enable_saved;
  32         unsigned long efer;
  33         u16 gdt_pad;
  34         u16 gdt_limit;
  35         unsigned long gdt_base;
  36         u16 idt_pad;
  37         u16 idt_limit;
  38         unsigned long idt_base;
  39         u16 ldt;
  40         u16 tss;
  41         unsigned long tr;
  42         unsigned long safety;
  43         unsigned long return_address;
  44 } __attribute__((packed));
  45
  46 #define loaddebug(thread,register) \
  47         set_debugreg((thread)->debugreg##register, register)
  48
  49 /* routines for saving/restoring kernel state */
  50 extern int acpi_save_state_mem(void);
  51 extern char core_restore_code;
  52 extern char restore_registers;
  53
  54 #endif /* _ASM_X86_SUSPEND_64_H */