| /* |
| * 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/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); |
| 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); |
| } |