[deliverable/linux.git] / arch / sparc / power / hibernate.c

/*
 * hibernate.c:  Hibernaton support specific for sparc64.
 *
 * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
 */

#include <linux/mm.h>

#include <asm/hibernate.h>
#include <asm/visasm.h>
#include <asm/page.h>
#include <asm/sections.h>
#include <asm/tlb.h>

struct saved_context saved_context;

/*
 *	pfn_is_nosave - check if given pfn is in the 'nosave' section
 */

int pfn_is_nosave(unsigned long pfn)
{
	unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
	unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);

	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
}

void save_processor_state(void)
{
	save_and_clear_fpu();
}

void restore_processor_state(void)
{
	struct mm_struct *mm = current->active_mm;

	load_secondary_context(mm);
	tsb_context_switch(mm);
}
Commit	Line	Data
bdde6b3c TK	1	/*
	2	* hibernate.c: Hibernaton support specific for sparc64.
	3	*
	4	* Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
	5	*/
	6
	7	#include <linux/mm.h>
	8
	9	#include <asm/hibernate.h>
	10	#include <asm/visasm.h>
	11	#include <asm/page.h>
7f8998c7	12	#include <asm/sections.h>
bdde6b3c TK	13	#include <asm/tlb.h>
bdde6b3c TK	14
bdde6b3c TK	15	struct saved_context saved_context;
	16
	17	/*
	18	* pfn_is_nosave - check if given pfn is in the 'nosave' section
	19	*/
	20
	21	int pfn_is_nosave(unsigned long pfn)
	22	{
	23	unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
	24	unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);
	25
	26	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
	27	}
	28
	29	void save_processor_state(void)
	30	{
	31	save_and_clear_fpu();
	32	}
	33
	34	void restore_processor_state(void)
	35	{
	36	struct mm_struct *mm = current->active_mm;
	37
	38	load_secondary_context(mm);
	39	tsb_context_switch(mm);
	40	}