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