From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/powerpc/lib/copypage_64.S | 108 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 arch/powerpc/lib/copypage_64.S (limited to 'arch/powerpc/lib/copypage_64.S') diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S new file mode 100644 index 000000000..6812cb19d --- /dev/null +++ b/arch/powerpc/lib/copypage_64.S @@ -0,0 +1,108 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2008 Mark Nelson, IBM Corp. + */ +#include +#include +#include +#include +#include +#include + +_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 + LOAD_REG_ADDR(r10, ppc64_caches) + 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) -- cgit v1.2.3