Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.9 / 95e2106f46702f720b80a22b3c79be25362e02be / . / arch / powerpc / lib / copypage_64.S
blob: a3c4dc4defdd86e02ad098fa0269c68170935e78 [file] [log] [blame]
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000[diff] [blame]1/*
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]2 * Copyright (C) 2008 Mark Nelson, IBM Corp.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000[diff] [blame]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 */
Anton Blanchardd988f0e2011-05-08 21:18:38 +0000[diff] [blame]9#include <asm/page.h>
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000[diff] [blame]10#include <asm/processor.h>
11#include <asm/ppc_asm.h>
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]12#include <asm/asm-offsets.h>
13
14 .section ".toc","aw"
15PPC64_CACHES:
16 .tc ppc64_caches[TC],ppc64_caches
17 .section ".text"
18
Anton Blanchard2ac7b012014-06-05 08:04:39 +1000[diff] [blame]19_GLOBAL_TOC(copy_page)
Anton Blanchardfde69282012-05-29 19:33:12 +0000[diff] [blame]20BEGIN_FTR_SECTION
Anton Blanchardd988f0e2011-05-08 21:18:38 +0000[diff] [blame]21 lis r5,PAGE_SIZE@h
Anton Blanchardfde69282012-05-29 19:33:12 +0000[diff] [blame]22FTR_SECTION_ELSE
Anton Blanchardb1576fe2014-02-04 16:04:35 +1100[diff] [blame]23 b copypage_power7
Anton Blanchardfde69282012-05-29 19:33:12 +0000[diff] [blame]24ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY)
Anton Blanchardd988f0e2011-05-08 21:18:38 +0000[diff] [blame]25 ori r5,r5,PAGE_SIZE@l
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]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
Anton Blanchard3cd980d2009-10-18 01:23:28 +0000[diff] [blame]34.Lsetup:
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]35 dcbt r9,r4
36 dcbz r9,r3
37 add r9,r9,r12
Anton Blanchard3cd980d2009-10-18 01:23:28 +0000[diff] [blame]38 bdnz .Lsetup
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]39END_FTR_SECTION_IFSET(CPU_FTR_CP_USE_DCBTZ)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000[diff] [blame]40 addi r3,r3,-8
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]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)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]51 std r6,16(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]52 ld r9,8(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]53 ld r10,16(r4)
54 std r7,24(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]55 std r8,32(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]56 ld r11,24(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]57 ld r12,32(r4)
58 std r9,40(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]59 std r10,48(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]60 ld r5,40(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]61 ld r6,48(r4)
62 std r11,56(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]63 std r12,64(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]64 ld r7,56(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]65 ld r8,64(r4)
66 std r5,72(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]67 std r6,80(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]68 ld r9,72(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]69 ld r10,80(r4)
70 std r7,88(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]71 std r8,96(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]72 ld r11,88(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]73 ld r12,96(r4)
74 std r9,104(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]75 std r10,112(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]76 ld r5,104(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]77 ld r6,112(r4)
78 std r11,120(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]79 stdu r12,128(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]80 ld r7,120(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]81 ldu r8,128(r4)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000[diff] [blame]82 bdnz 1b
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]83
84 std r5,8(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]85 std r6,16(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]86 ld r9,8(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]87 ld r10,16(r4)
88 std r7,24(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]89 std r8,32(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]90 ld r11,24(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]91 ld r12,32(r4)
92 std r9,40(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]93 std r10,48(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]94 ld r5,40(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]95 ld r6,48(r4)
96 std r11,56(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]97 std r12,64(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]98 ld r7,56(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]99 ld r8,64(r4)
100 std r5,72(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]101 std r6,80(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]102 ld r9,72(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]103 ld r10,80(r4)
104 std r7,88(r3)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]105 std r8,96(r3)
Anton Blanchard63e6c5b2010-02-10 18:07:54 +0000[diff] [blame]106 ld r11,88(r4)
Mark Nelson57dda6e2008-08-22 14:39:00 +1000[diff] [blame]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)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000[diff] [blame]112 blr