projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 14cf11af | 2 | /* |
| 57dda6ef | 3 | * Copyright (C) 2008 Mark Nelson, IBM Corp. |
| 14cf11af | 4 | */ |
| d988f0e3 | 5 | #include <asm/page.h> |
| 14cf11af PM |
6 | #include <asm/processor.h> |
| 7 | #include <asm/ppc_asm.h> | |
| 57dda6ef | 8 | #include <asm/asm-offsets.h> |
| 9445aa1a | 9 | #include <asm/export.h> |
| 2c86cd18 | 10 | #include <asm/feature-fixups.h> |
| 57dda6ef | 11 | |
| 2ac7b016 | 12 | _GLOBAL_TOC(copy_page) |
| fde69282 | 13 | BEGIN_FTR_SECTION |
| d988f0e3 | 14 | lis r5,PAGE_SIZE@h |
| fde69282 | 15 | FTR_SECTION_ELSE |
| 15a3204d | 16 | #ifdef CONFIG_PPC_BOOK3S_64 |
| b1576fec | 17 | b copypage_power7 |
| 15a3204d | 18 | #endif |
| fde69282 | 19 | ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) |
| d988f0e3 | 20 | ori r5,r5,PAGE_SIZE@l |
| 7e3a68be NP |
21 | #ifdef CONFIG_PPC_KERNEL_PCREL |
| 22 | /* | |
| 23 | * Hack for toolchain - prefixed instructions cause label difference to | |
| 24 | * be non-constant even if 8 byte alignment is known, so they can not | |
| 25 | * be put in FTR sections. | |
| 26 | */ | |
| 27 | LOAD_REG_ADDR(r10, ppc64_caches) | |
| 28 | BEGIN_FTR_SECTION | |
| 29 | #else | |
| 57dda6ef | 30 | BEGIN_FTR_SECTION |
| dab3b8f4 | 31 | LOAD_REG_ADDR(r10, ppc64_caches) |
| 7e3a68be | 32 | #endif |
| bd067f83 BH |
33 | lwz r11,DCACHEL1LOGBLOCKSIZE(r10) /* log2 of cache block size */ |
| 34 | lwz r12,DCACHEL1BLOCKSIZE(r10) /* get cache block size */ | |
| 57dda6ef MN |
35 | li r9,0 |
| 36 | srd r8,r5,r11 | |
| 37 | ||
| 38 | mtctr r8 | |
| 3cd980db | 39 | .Lsetup: |
| 57dda6ef MN |
40 | dcbt r9,r4 |
| 41 | dcbz r9,r3 | |
| 42 | add r9,r9,r12 | |
| 3cd980db | 43 | bdnz .Lsetup |
| 57dda6ef | 44 | END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ) |
| 14cf11af | 45 | addi r3,r3,-8 |
| 57dda6ef MN |
46 | srdi r8,r5,7 /* page is copied in 128 byte strides */ |
| 47 | addi r8,r8,-1 /* one stride copied outside loop */ | |
| 48 | ||
| 49 | mtctr r8 | |
| 50 | ||
| 51 | ld r5,0(r4) | |
| 52 | ld r6,8(r4) | |
| 53 | ld r7,16(r4) | |
| 54 | ldu r8,24(r4) | |
| 55 | 1: std r5,8(r3) | |
| 57dda6ef | 56 | std r6,16(r3) |
| 63e6c5b8 | 57 | ld r9,8(r4) |
| 57dda6ef MN |
58 | ld r10,16(r4) |
| 59 | std r7,24(r3) | |
| 57dda6ef | 60 | std r8,32(r3) |
| 63e6c5b8 | 61 | ld r11,24(r4) |
| 57dda6ef MN |
62 | ld r12,32(r4) |
| 63 | std r9,40(r3) | |
| 57dda6ef | 64 | std r10,48(r3) |
| 63e6c5b8 | 65 | ld r5,40(r4) |
| 57dda6ef MN |
66 | ld r6,48(r4) |
| 67 | std r11,56(r3) | |
| 57dda6ef | 68 | std r12,64(r3) |
| 63e6c5b8 | 69 | ld r7,56(r4) |
| 57dda6ef MN |
70 | ld r8,64(r4) |
| 71 | std r5,72(r3) | |
| 57dda6ef | 72 | std r6,80(r3) |
| 63e6c5b8 | 73 | ld r9,72(r4) |
| 57dda6ef MN |
74 | ld r10,80(r4) |
| 75 | std r7,88(r3) | |
| 57dda6ef | 76 | std r8,96(r3) |
| 63e6c5b8 | 77 | ld r11,88(r4) |
| 57dda6ef MN |
78 | ld r12,96(r4) |
| 79 | std r9,104(r3) | |
| 57dda6ef | 80 | std r10,112(r3) |
| 63e6c5b8 | 81 | ld r5,104(r4) |
| 57dda6ef MN |
82 | ld r6,112(r4) |
| 83 | std r11,120(r3) | |
| 57dda6ef | 84 | stdu r12,128(r3) |
| 63e6c5b8 | 85 | ld r7,120(r4) |
| 57dda6ef | 86 | ldu r8,128(r4) |
| 14cf11af | 87 | bdnz 1b |
| 57dda6ef MN |
88 | |
| 89 | std r5,8(r3) | |
| 57dda6ef | 90 | std r6,16(r3) |
| 63e6c5b8 | 91 | ld r9,8(r4) |
| 57dda6ef MN |
92 | ld r10,16(r4) |
| 93 | std r7,24(r3) | |
| 57dda6ef | 94 | std r8,32(r3) |
| 63e6c5b8 | 95 | ld r11,24(r4) |
| 57dda6ef MN |
96 | ld r12,32(r4) |
| 97 | std r9,40(r3) | |
| 57dda6ef | 98 | std r10,48(r3) |
| 63e6c5b8 | 99 | ld r5,40(r4) |
| 57dda6ef MN |
100 | ld r6,48(r4) |
| 101 | std r11,56(r3) | |
| 57dda6ef | 102 | std r12,64(r3) |
| 63e6c5b8 | 103 | ld r7,56(r4) |
| 57dda6ef MN |
104 | ld r8,64(r4) |
| 105 | std r5,72(r3) | |
| 57dda6ef | 106 | std r6,80(r3) |
| 63e6c5b8 | 107 | ld r9,72(r4) |
| 57dda6ef MN |
108 | ld r10,80(r4) |
| 109 | std r7,88(r3) | |
| 57dda6ef | 110 | std r8,96(r3) |
| 63e6c5b8 | 111 | ld r11,88(r4) |
| 57dda6ef MN |
112 | ld r12,96(r4) |
| 113 | std r9,104(r3) | |
| 114 | std r10,112(r3) | |
| 115 | std r11,120(r3) | |
| 116 | std r12,128(r3) | |
| 14cf11af | 117 | blr |
| 9445aa1a | 118 | EXPORT_SYMBOL(copy_page) |