// SPDX-License-Identifier: GPL-2.0-only /* * Suspend support specific for mips. * * Copyright (C) 2009 Lemote Inc. * Author: Hu Hongbing <huhb@lemote.com> * Wu Zhangjin <wuzhangjin@gmail.com> */ #include <asm/sections.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); save_dsp(current); } void restore_processor_state(void) { write_c0_status(saved_status); if (is_fpu_owner()) restore_fp(current); 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); }