1/*
2 * Suspend support specific for mips.
3 *
4 * Licensed under the GPLv2
5 *
6 * Copyright (C) 2009 Lemote Inc.
7 * Author: Hu Hongbing <huhb@lemote.com>
8 *	   Wu Zhangjin <wuzhangjin@gmail.com>
9 */
10#include <asm/sections.h>
11#include <asm/fpu.h>
12#include <asm/dsp.h>
13
14static u32 saved_status;
15struct pt_regs saved_regs;
16
17void save_processor_state(void)
18{
19	saved_status = read_c0_status();
20
21	if (is_fpu_owner())
22		save_fp(current);
23	if (cpu_has_dsp)
24		save_dsp(current);
25}
26
27void restore_processor_state(void)
28{
29	write_c0_status(saved_status);
30
31	if (is_fpu_owner())
32		restore_fp(current);
33	if (cpu_has_dsp)
34		restore_dsp(current);
35}
36
37int pfn_is_nosave(unsigned long pfn)
38{
39	unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
40	unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
41
42	return	(pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
43}
44