1/* 2 * Copyright (C) 2008 Mark Nelson, IBM Corp. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 */ 9#include <asm/page.h> 10#include <asm/processor.h> 11#include <asm/ppc_asm.h> 12#include <asm/asm-offsets.h> 13 14 .section ".toc","aw" 15PPC64_CACHES: 16 .tc ppc64_caches[TC],ppc64_caches 17 .section ".text" 18 19_GLOBAL_TOC(copy_page) 20BEGIN_FTR_SECTION 21 lis r5,PAGE_SIZE@h 22FTR_SECTION_ELSE 23 b copypage_power7 24ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) 25 ori r5,r5,PAGE_SIZE@l 26BEGIN_FTR_SECTION 27 ld r10,PPC64_CACHES@toc(r2) 28 lwz r11,DCACHEL1LOGLINESIZE(r10) /* log2 of cache line size */ 29 lwz r12,DCACHEL1LINESIZE(r10) /* get cache line size */ 30 li r9,0 31 srd r8,r5,r11 32 33 mtctr r8 34.Lsetup: 35 dcbt r9,r4 36 dcbz r9,r3 37 add r9,r9,r12 38 bdnz .Lsetup 39END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ) 40 addi r3,r3,-8 41 srdi r8,r5,7 /* page is copied in 128 byte strides */ 42 addi r8,r8,-1 /* one stride copied outside loop */ 43 44 mtctr r8 45 46 ld r5,0(r4) 47 ld r6,8(r4) 48 ld r7,16(r4) 49 ldu r8,24(r4) 501: std r5,8(r3) 51 std r6,16(r3) 52 ld r9,8(r4) 53 ld r10,16(r4) 54 std r7,24(r3) 55 std r8,32(r3) 56 ld r11,24(r4) 57 ld r12,32(r4) 58 std r9,40(r3) 59 std r10,48(r3) 60 ld r5,40(r4) 61 ld r6,48(r4) 62 std r11,56(r3) 63 std r12,64(r3) 64 ld r7,56(r4) 65 ld r8,64(r4) 66 std r5,72(r3) 67 std r6,80(r3) 68 ld r9,72(r4) 69 ld r10,80(r4) 70 std r7,88(r3) 71 std r8,96(r3) 72 ld r11,88(r4) 73 ld r12,96(r4) 74 std r9,104(r3) 75 std r10,112(r3) 76 ld r5,104(r4) 77 ld r6,112(r4) 78 std r11,120(r3) 79 stdu r12,128(r3) 80 ld r7,120(r4) 81 ldu r8,128(r4) 82 bdnz 1b 83 84 std r5,8(r3) 85 std r6,16(r3) 86 ld r9,8(r4) 87 ld r10,16(r4) 88 std r7,24(r3) 89 std r8,32(r3) 90 ld r11,24(r4) 91 ld r12,32(r4) 92 std r9,40(r3) 93 std r10,48(r3) 94 ld r5,40(r4) 95 ld r6,48(r4) 96 std r11,56(r3) 97 std r12,64(r3) 98 ld r7,56(r4) 99 ld r8,64(r4) 100 std r5,72(r3) 101 std r6,80(r3) 102 ld r9,72(r4) 103 ld r10,80(r4) 104 std r7,88(r3) 105 std r8,96(r3) 106 ld r11,88(r4) 107 ld r12,96(r4) 108 std r9,104(r3) 109 std r10,112(r3) 110 std r11,120(r3) 111 std r12,128(r3) 112 blr 113