cpu.c
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/*
* Suspend support specific for mips.
*
* Licensed under the GPLv2
*
* Copyright (C) 2009 Lemote Inc.
* Author: Hu Hongbing <huhb@lemote.com>
* Wu Zhangjin <wuzhangjin@gmail.com>
*/
#include <asm/suspend.h>
#include <asm/fpu.h>
#include <asm/dsp.h>
static u32 saved_status;
struct pt_regs saved_regs;
void save_processor_state(void)
{
saved_status = read_c0_status();
if (is_fpu_owner())
save_fp(current);
if (cpu_has_dsp)
save_dsp(current);
}
void restore_processor_state(void)
{
write_c0_status(saved_status);
if (is_fpu_owner())
restore_fp(current);
if (cpu_has_dsp)
restore_dsp(current);
}
int pfn_is_nosave(unsigned long pfn)
{
unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
}