diff options
Diffstat (limited to 'include/asm-i386/suspend.h')
| -rw-r--r-- | include/asm-i386/suspend.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/asm-i386/suspend.h b/include/asm-i386/suspend.h new file mode 100644 index 000000000000..dfc1114c1b6f --- /dev/null +++ b/include/asm-i386/suspend.h @@ -0,0 +1,66 @@ +/* + * Copyright 2001-2002 Pavel Machek <pavel@suse.cz> + * Based on code + * Copyright 2001 Patrick Mochel <mochel@osdl.org> + */ +#include <asm/desc.h> +#include <asm/i387.h> + +static inline int +arch_prepare_suspend(void) +{ + /* If you want to make non-PSE machine work, turn off paging + in swsusp_arch_suspend. swsusp_pg_dir should have identity mapping, so + it could work... */ + if (!cpu_has_pse) { + printk(KERN_ERR "PSE is required for swsusp.\n"); + return -EPERM; + } + return 0; +} + +/* image of the saved processor state */ +struct saved_context { + u16 es, fs, gs, ss; + unsigned long cr0, cr2, cr3, cr4; + u16 gdt_pad; + u16 gdt_limit; + unsigned long gdt_base; + u16 idt_pad; + u16 idt_limit; + unsigned long idt_base; + u16 ldt; + u16 tss; + unsigned long tr; + unsigned long safety; + unsigned long return_address; +} __attribute__((packed)); + +#define loaddebug(thread,register) \ + __asm__("movl %0,%%db" #register \ + : /* no output */ \ + :"r" ((thread)->debugreg[register])) + +#ifdef CONFIG_ACPI_SLEEP +extern unsigned long saved_eip; +extern unsigned long saved_esp; +extern unsigned long saved_ebp; +extern unsigned long saved_ebx; +extern unsigned long saved_esi; +extern unsigned long saved_edi; + +static inline void acpi_save_register_state(unsigned long return_point) +{ + saved_eip = return_point; + asm volatile ("movl %%esp,%0" : "=m" (saved_esp)); + asm volatile ("movl %%ebp,%0" : "=m" (saved_ebp)); + asm volatile ("movl %%ebx,%0" : "=m" (saved_ebx)); + asm volatile ("movl %%edi,%0" : "=m" (saved_edi)); + asm volatile ("movl %%esi,%0" : "=m" (saved_esi)); +} + +#define acpi_restore_register_state() do {} while (0) + +/* routines for saving/restoring kernel state */ +extern int acpi_save_state_mem(void); +#endif |