1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #include <asm/fpu.h> !! 2 /*
3 #include <asm/loongson.h> !! 3 * hibernate.c: Hibernaton support specific for sparc64.
4 #include <asm/sections.h> !! 4 *
5 #include <asm/tlbflush.h> !! 5 * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
6 #include <linux/suspend.h> !! 6 */
7 7
8 static u32 saved_crmd; !! 8 #include <linux/suspend.h>
9 static u32 saved_prmd; !! 9 #include <linux/mm.h>
10 static u32 saved_euen; <<
11 static u32 saved_ecfg; <<
12 static u64 saved_pcpu_base; <<
13 struct pt_regs saved_regs; <<
14 <<
15 void save_processor_state(void) <<
16 { <<
17 saved_crmd = csr_read32(LOONGARCH_CSR_ <<
18 saved_prmd = csr_read32(LOONGARCH_CSR_ <<
19 saved_euen = csr_read32(LOONGARCH_CSR_ <<
20 saved_ecfg = csr_read32(LOONGARCH_CSR_ <<
21 saved_pcpu_base = csr_read64(PERCPU_BA <<
22 10
23 if (is_fpu_owner()) !! 11 #include <asm/hibernate.h>
24 save_fp(current); !! 12 #include <asm/visasm.h>
25 } !! 13 #include <asm/page.h>
>> 14 #include <asm/sections.h>
>> 15 #include <asm/tlb.h>
26 16
27 void restore_processor_state(void) !! 17 struct saved_context saved_context;
28 { <<
29 csr_write32(saved_crmd, LOONGARCH_CSR_ <<
30 csr_write32(saved_prmd, LOONGARCH_CSR_ <<
31 csr_write32(saved_euen, LOONGARCH_CSR_ <<
32 csr_write32(saved_ecfg, LOONGARCH_CSR_ <<
33 csr_write64(saved_pcpu_base, PERCPU_BA <<
34 18
35 if (is_fpu_owner()) !! 19 /*
36 restore_fp(current); !! 20 * pfn_is_nosave - check if given pfn is in the 'nosave' section
37 } !! 21 */
38 22
39 int pfn_is_nosave(unsigned long pfn) 23 int pfn_is_nosave(unsigned long pfn)
40 { 24 {
41 unsigned long nosave_begin_pfn = PFN_D !! 25 unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
42 unsigned long nosave_end_pfn = PFN_UP( !! 26 unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);
43 27
44 return (pfn >= nosave_begin_pfn) && ( !! 28 return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
45 } 29 }
46 30
47 extern int swsusp_asm_suspend(void); !! 31 void save_processor_state(void)
48 <<
49 int swsusp_arch_suspend(void) <<
50 { 32 {
51 enable_pci_wakeup(); !! 33 save_and_clear_fpu();
52 return swsusp_asm_suspend(); <<
53 } 34 }
54 35
55 extern int swsusp_asm_resume(void); !! 36 void restore_processor_state(void)
56 <<
57 int swsusp_arch_resume(void) <<
58 { 37 {
59 /* Avoid TLB mismatch during and after !! 38 struct mm_struct *mm = current->active_mm;
60 local_flush_tlb_all(); !! 39
61 return swsusp_asm_resume(); !! 40 tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
62 } 41 }
63 42
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