mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-30 22:03:17 +01:00
Aurabindo Jayamohanan
9662dd752c
{save,restore}_dsp() internally checks if the cpu has dsp support.
Therefore, explicit check is not required before calling them in
{save,restore}_processor_state()
Signed-off-by: Aurabindo Jayamohanan <[email protected]>
Signed-off-by: Paul Burton <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
43 lines
833 B
C
43 lines
833 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Suspend support specific for mips.
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*
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* Copyright (C) 2009 Lemote Inc.
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* Author: Hu Hongbing <[email protected]>
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* Wu Zhangjin <[email protected]>
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*/
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#include <asm/sections.h>
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#include <asm/fpu.h>
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#include <asm/dsp.h>
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static u32 saved_status;
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struct pt_regs saved_regs;
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void save_processor_state(void)
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{
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saved_status = read_c0_status();
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if (is_fpu_owner())
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save_fp(current);
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save_dsp(current);
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}
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void restore_processor_state(void)
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{
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write_c0_status(saved_status);
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if (is_fpu_owner())
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restore_fp(current);
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restore_dsp(current);
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}
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int pfn_is_nosave(unsigned long pfn)
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{
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unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
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unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
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return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
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}
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