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/processor.h> 10#include <asm/ppc_asm.h> 11#include <asm/asm-offsets.h> 12 13 .section ".toc","aw" 14PPC64_CACHES: 15 .tc ppc64_caches[TC],ppc64_caches 16 .section ".text" 17 18 19_GLOBAL(copy_4K_page) 20 li r5,4096 /* 4K page size */ 21BEGIN_FTR_SECTION 22 ld r10,PPC64_CACHES@toc(r2) 23 lwz r11,DCACHEL1LOGLINESIZE(r10) /* log2 of cache line size */ 24 lwz r12,DCACHEL1LINESIZE(r10) /* get cache line size */ 25 li r9,0 26 srd r8,r5,r11 27 28 mtctr r8 29setup: 30 dcbt r9,r4 31 dcbz r9,r3 32 add r9,r9,r12 33 bdnz setup 34END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ) 35 addi r3,r3,-8 36 srdi r8,r5,7 /* page is copied in 128 byte strides */ 37 addi r8,r8,-1 /* one stride copied outside loop */ 38 39 mtctr r8 40 41 ld r5,0(r4) 42 ld r6,8(r4) 43 ld r7,16(r4) 44 ldu r8,24(r4) 451: std r5,8(r3) 46 ld r9,8(r4) 47 std r6,16(r3) 48 ld r10,16(r4) 49 std r7,24(r3) 50 ld r11,24(r4) 51 std r8,32(r3) 52 ld r12,32(r4) 53 std r9,40(r3) 54 ld r5,40(r4) 55 std r10,48(r3) 56 ld r6,48(r4) 57 std r11,56(r3) 58 ld r7,56(r4) 59 std r12,64(r3) 60 ld r8,64(r4) 61 std r5,72(r3) 62 ld r9,72(r4) 63 std r6,80(r3) 64 ld r10,80(r4) 65 std r7,88(r3) 66 ld r11,88(r4) 67 std r8,96(r3) 68 ld r12,96(r4) 69 std r9,104(r3) 70 ld r5,104(r4) 71 std r10,112(r3) 72 ld r6,112(r4) 73 std r11,120(r3) 74 ld r7,120(r4) 75 stdu r12,128(r3) 76 ldu r8,128(r4) 77 bdnz 1b 78 79 std r5,8(r3) 80 ld r9,8(r4) 81 std r6,16(r3) 82 ld r10,16(r4) 83 std r7,24(r3) 84 ld r11,24(r4) 85 std r8,32(r3) 86 ld r12,32(r4) 87 std r9,40(r3) 88 ld r5,40(r4) 89 std r10,48(r3) 90 ld r6,48(r4) 91 std r11,56(r3) 92 ld r7,56(r4) 93 std r12,64(r3) 94 ld r8,64(r4) 95 std r5,72(r3) 96 ld r9,72(r4) 97 std r6,80(r3) 98 ld r10,80(r4) 99 std r7,88(r3) 100 ld r11,88(r4) 101 std r8,96(r3) 102 ld r12,96(r4) 103 std r9,104(r3) 104 std r10,112(r3) 105 std r11,120(r3) 106 std r12,128(r3) 107 blr 108