Johannes Berg | be9c94d | 2007-04-30 21:37:15 +1000 | [diff] [blame] | 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> |
Johannes Berg | be9c94d | 2007-04-30 21:37:15 +1000 | [diff] [blame] | 13 | #include <asm/current.h> |
| 14 | #include <asm/mmu_context.h> |
David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 15 | #include <asm/switch_to.h> |
Johannes Berg | be9c94d | 2007-04-30 21:37:15 +1000 | [diff] [blame] | 16 | |
| 17 | void save_processor_state(void) |
| 18 | { |
| 19 | /* |
| 20 | * flush out all the special registers so we don't need |
| 21 | * to save them in the snapshot |
| 22 | */ |
| 23 | flush_fp_to_thread(current); |
| 24 | flush_altivec_to_thread(current); |
| 25 | flush_spe_to_thread(current); |
Johannes Berg | 543b9fd | 2007-05-03 22:31:38 +1000 | [diff] [blame] | 26 | |
| 27 | #ifdef CONFIG_PPC64 |
| 28 | hard_irq_disable(); |
| 29 | #endif |
| 30 | |
Johannes Berg | be9c94d | 2007-04-30 21:37:15 +1000 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | void restore_processor_state(void) |
| 34 | { |
| 35 | #ifdef CONFIG_PPC32 |
Tang Yuantian | 0330581 | 2011-08-16 19:51:33 +0000 | [diff] [blame] | 36 | switch_mmu_context(current->active_mm, current->active_mm); |
Johannes Berg | be9c94d | 2007-04-30 21:37:15 +1000 | [diff] [blame] | 37 | #endif |
Johannes Berg | be9c94d | 2007-04-30 21:37:15 +1000 | [diff] [blame] | 38 | } |