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 */ 55