forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
2.0 KiB
113 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
|
/* |
|
* Copyright (C) 2008 Mark Nelson, IBM Corp. |
|
*/ |
|
#include <asm/page.h> |
|
#include <asm/processor.h> |
|
#include <asm/ppc_asm.h> |
|
#include <asm/asm-offsets.h> |
|
#include <asm/export.h> |
|
#include <asm/feature-fixups.h> |
|
|
|
.section ".toc","aw" |
|
PPC64_CACHES: |
|
.tc ppc64_caches[TC],ppc64_caches |
|
.section ".text" |
|
|
|
_GLOBAL_TOC(copy_page) |
|
BEGIN_FTR_SECTION |
|
lis r5,PAGE_SIZE@h |
|
FTR_SECTION_ELSE |
|
#ifdef CONFIG_PPC_BOOK3S_64 |
|
b copypage_power7 |
|
#endif |
|
ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) |
|
ori r5,r5,PAGE_SIZE@l |
|
BEGIN_FTR_SECTION |
|
ld r10,PPC64_CACHES@toc(r2) |
|
lwz r11,DCACHEL1LOGBLOCKSIZE(r10) /* log2 of cache block size */ |
|
lwz r12,DCACHEL1BLOCKSIZE(r10) /* get cache block size */ |
|
li r9,0 |
|
srd r8,r5,r11 |
|
|
|
mtctr r8 |
|
.Lsetup: |
|
dcbt r9,r4 |
|
dcbz r9,r3 |
|
add r9,r9,r12 |
|
bdnz .Lsetup |
|
END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ) |
|
addi r3,r3,-8 |
|
srdi r8,r5,7 /* page is copied in 128 byte strides */ |
|
addi r8,r8,-1 /* one stride copied outside loop */ |
|
|
|
mtctr r8 |
|
|
|
ld r5,0(r4) |
|
ld r6,8(r4) |
|
ld r7,16(r4) |
|
ldu r8,24(r4) |
|
1: std r5,8(r3) |
|
std r6,16(r3) |
|
ld r9,8(r4) |
|
ld r10,16(r4) |
|
std r7,24(r3) |
|
std r8,32(r3) |
|
ld r11,24(r4) |
|
ld r12,32(r4) |
|
std r9,40(r3) |
|
std r10,48(r3) |
|
ld r5,40(r4) |
|
ld r6,48(r4) |
|
std r11,56(r3) |
|
std r12,64(r3) |
|
ld r7,56(r4) |
|
ld r8,64(r4) |
|
std r5,72(r3) |
|
std r6,80(r3) |
|
ld r9,72(r4) |
|
ld r10,80(r4) |
|
std r7,88(r3) |
|
std r8,96(r3) |
|
ld r11,88(r4) |
|
ld r12,96(r4) |
|
std r9,104(r3) |
|
std r10,112(r3) |
|
ld r5,104(r4) |
|
ld r6,112(r4) |
|
std r11,120(r3) |
|
stdu r12,128(r3) |
|
ld r7,120(r4) |
|
ldu r8,128(r4) |
|
bdnz 1b |
|
|
|
std r5,8(r3) |
|
std r6,16(r3) |
|
ld r9,8(r4) |
|
ld r10,16(r4) |
|
std r7,24(r3) |
|
std r8,32(r3) |
|
ld r11,24(r4) |
|
ld r12,32(r4) |
|
std r9,40(r3) |
|
std r10,48(r3) |
|
ld r5,40(r4) |
|
ld r6,48(r4) |
|
std r11,56(r3) |
|
std r12,64(r3) |
|
ld r7,56(r4) |
|
ld r8,64(r4) |
|
std r5,72(r3) |
|
std r6,80(r3) |
|
ld r9,72(r4) |
|
ld r10,80(r4) |
|
std r7,88(r3) |
|
std r8,96(r3) |
|
ld r11,88(r4) |
|
ld r12,96(r4) |
|
std r9,104(r3) |
|
std r10,112(r3) |
|
std r11,120(r3) |
|
std r12,128(r3) |
|
blr |
|
EXPORT_SYMBOL(copy_page)
|
|
|