1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /* 1 /*
3 * Suspend support specific for mips. 2 * Suspend support specific for mips.
4 * 3 *
>> 4 * Licensed under the GPLv2
>> 5 *
5 * Copyright (C) 2009 Lemote Inc. 6 * Copyright (C) 2009 Lemote Inc.
6 * Author: Hu Hongbing <huhb@lemote.com> 7 * Author: Hu Hongbing <huhb@lemote.com>
7 * Wu Zhangjin <wuzhangjin@gmail.com> 8 * Wu Zhangjin <wuzhangjin@gmail.com>
8 */ 9 */
9 #include <linux/suspend.h> <<
10 #include <asm/sections.h> 10 #include <asm/sections.h>
11 #include <asm/fpu.h> 11 #include <asm/fpu.h>
12 #include <asm/dsp.h> 12 #include <asm/dsp.h>
13 13
14 static u32 saved_status; 14 static u32 saved_status;
15 struct pt_regs saved_regs; 15 struct pt_regs saved_regs;
16 16
17 void save_processor_state(void) 17 void save_processor_state(void)
18 { 18 {
19 saved_status = read_c0_status(); 19 saved_status = read_c0_status();
20 20
21 if (is_fpu_owner()) 21 if (is_fpu_owner())
22 save_fp(current); 22 save_fp(current);
23 !! 23 if (cpu_has_dsp)
24 save_dsp(current); !! 24 save_dsp(current);
25 } 25 }
26 26
27 void restore_processor_state(void) 27 void restore_processor_state(void)
28 { 28 {
29 write_c0_status(saved_status); 29 write_c0_status(saved_status);
30 30
31 if (is_fpu_owner()) 31 if (is_fpu_owner())
32 restore_fp(current); 32 restore_fp(current);
33 !! 33 if (cpu_has_dsp)
34 restore_dsp(current); !! 34 restore_dsp(current);
35 } 35 }
36 36
37 int pfn_is_nosave(unsigned long pfn) 37 int pfn_is_nosave(unsigned long pfn)
38 { 38 {
39 unsigned long nosave_begin_pfn = PFN_D 39 unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
40 unsigned long nosave_end_pfn = PFN_UP( 40 unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
41 41
42 return (pfn >= nosave_begin_pfn) && ( 42 return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
43 } 43 }
44 44
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