Merge branch 'for-np' of git://git.wormnet.eu/alex/ts78xx into orion/master
[linux-2.6] / arch / powerpc / kernel / swsusp.c
1 /*
2  * Common powerpc suspend code for 32 and 64 bits
3  *
4  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version
9  * 2 of the License, or (at your option) any later version.
10  */
11
12 #include <linux/sched.h>
13 #include <asm/suspend.h>
14 #include <asm/system.h>
15 #include <asm/current.h>
16 #include <asm/mmu_context.h>
17
18 void save_processor_state(void)
19 {
20         /*
21          * flush out all the special registers so we don't need
22          * to save them in the snapshot
23          */
24         flush_fp_to_thread(current);
25         flush_altivec_to_thread(current);
26         flush_spe_to_thread(current);
27
28 #ifdef CONFIG_PPC64
29         hard_irq_disable();
30 #endif
31
32 }
33
34 void restore_processor_state(void)
35 {
36 #ifdef CONFIG_PPC32
37         switch_mmu_context(NULL, current->active_mm);
38 #endif
39 }