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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 <mail@aurabindo.in>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: ralf@linux-mips.org
Cc: jhogan@kernel.org
Cc: alexios.zavras@intel.com
Cc: gregkh@linuxfoundation.org
Cc: armijn@tjaldur.nl
Cc: allison@lohutok.net
Cc: tglx@linutronix.de
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
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 <huhb@lemote.com>
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* Wu Zhangjin <wuzhangjin@gmail.com>
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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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