projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| fde69282 AB |
1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify | |
| 3 | * it under the terms of the GNU General Public License as published by | |
| 4 | * the Free Software Foundation; either version 2 of the License, or | |
| 5 | * (at your option) any later version. | |
| 6 | * | |
| 7 | * This program is distributed in the hope that it will be useful, | |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 10 | * GNU General Public License for more details. | |
| 11 | * | |
| 12 | * You should have received a copy of the GNU General Public License | |
| 13 | * along with this program; if not, write to the Free Software | |
| 14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 15 | * | |
| 16 | * Copyright (C) IBM Corporation, 2012 | |
| 17 | * | |
| 18 | * Author: Anton Blanchard <anton@au.ibm.com> | |
| 19 | */ | |
| 20 | #include <asm/page.h> | |
| 21 | #include <asm/ppc_asm.h> | |
| 22 | ||
| fde69282 AB |
23 | _GLOBAL(copypage_power7) |
| 24 | /* | |
| 25 | * We prefetch both the source and destination using enhanced touch | |
| 26 | * instructions. We use a stream ID of 0 for the load side and | |
| 27 | * 1 for the store side. Since source and destination are page | |
| 28 | * aligned we don't need to clear the bottom 7 bits of either | |
| 29 | * address. | |
| 30 | */ | |
| 280a5ba2 | 31 | ori r9,r3,1 /* stream=1 => to */ |
| fde69282 AB |
32 | |
| 33 | #ifdef CONFIG_PPC_64K_PAGES | |
| 280a5ba2 MN |
34 | lis r7,0x0E01 /* depth=7 |
| 35 | * units/cachelines=512 */ | |
| fde69282 AB |
36 | #else |
| 37 | lis r7,0x0E00 /* depth=7 */ | |
| 280a5ba2 | 38 | ori r7,r7,0x1000 /* units/cachelines=32 */ |
| fde69282 AB |
39 | #endif |
| 40 | ori r10,r7,1 /* stream=1 */ | |
| 41 | ||
| 42 | lis r8,0x8000 /* GO=1 */ | |
| 43 | clrldi r8,r8,32 | |
| 44 | ||
| 280a5ba2 | 45 | /* setup read stream 0 */ |
| 8a583c0a AS |
46 | dcbt 0,r4,0b01000 /* addr from */ |
| 47 | dcbt 0,r7,0b01010 /* length and depth from */ | |
| 280a5ba2 | 48 | /* setup write stream 1 */ |
| 8a583c0a AS |
49 | dcbtst 0,r9,0b01000 /* addr to */ |
| 50 | dcbtst 0,r10,0b01010 /* length and depth to */ | |
| fde69282 | 51 | eieio |
| 8a583c0a | 52 | dcbt 0,r8,0b01010 /* all streams GO */ |
| fde69282 AB |
53 | |
| 54 | #ifdef CONFIG_ALTIVEC | |
| 55 | mflr r0 | |
| 752a6422 UW |
56 | std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) |
| 57 | std r4,-STACKFRAMESIZE+STK_REG(R30)(r1) | |
| fde69282 AB |
58 | std r0,16(r1) |
| 59 | stdu r1,-STACKFRAMESIZE(r1) | |
| b1576fec | 60 | bl enter_vmx_copy |
| fde69282 AB |
61 | cmpwi r3,0 |
| 62 | ld r0,STACKFRAMESIZE+16(r1) | |
| 752a6422 UW |
63 | ld r3,STK_REG(R31)(r1) |
| 64 | ld r4,STK_REG(R30)(r1) | |
| fde69282 AB |
65 | mtlr r0 |
| 66 | ||
| 67 | li r0,(PAGE_SIZE/128) | |
| 68 | mtctr r0 | |
| 69 | ||
| 70 | beq .Lnonvmx_copy | |
| 71 | ||
| 72 | addi r1,r1,STACKFRAMESIZE | |
| 73 | ||
| 74 | li r6,16 | |
| 75 | li r7,32 | |
| 76 | li r8,48 | |
| 77 | li r9,64 | |
| 78 | li r10,80 | |
| 79 | li r11,96 | |
| 80 | li r12,112 | |
| 81 | ||
| 82 | .align 5 | |
| 8a583c0a | 83 | 1: lvx v7,0,r4 |
| c2ce6f9f AB |
84 | lvx v6,r4,r6 |
| 85 | lvx v5,r4,r7 | |
| 86 | lvx v4,r4,r8 | |
| 87 | lvx v3,r4,r9 | |
| 88 | lvx v2,r4,r10 | |
| 89 | lvx v1,r4,r11 | |
| 90 | lvx v0,r4,r12 | |
| fde69282 | 91 | addi r4,r4,128 |
| 8a583c0a | 92 | stvx v7,0,r3 |
| c2ce6f9f AB |
93 | stvx v6,r3,r6 |
| 94 | stvx v5,r3,r7 | |
| 95 | stvx v4,r3,r8 | |
| 96 | stvx v3,r3,r9 | |
| 97 | stvx v2,r3,r10 | |
| 98 | stvx v1,r3,r11 | |
| 99 | stvx v0,r3,r12 | |
| fde69282 AB |
100 | addi r3,r3,128 |
| 101 | bdnz 1b | |
| 102 | ||
| b1576fec | 103 | b exit_vmx_copy /* tail call optimise */ |
| fde69282 AB |
104 | |
| 105 | #else | |
| 106 | li r0,(PAGE_SIZE/128) | |
| 107 | mtctr r0 | |
| 108 | ||
| 109 | stdu r1,-STACKFRAMESIZE(r1) | |
| 110 | #endif | |
| 111 | ||
| 112 | .Lnonvmx_copy: | |
| c75df6f9 MN |
113 | std r14,STK_REG(R14)(r1) |
| 114 | std r15,STK_REG(R15)(r1) | |
| 115 | std r16,STK_REG(R16)(r1) | |
| 116 | std r17,STK_REG(R17)(r1) | |
| 117 | std r18,STK_REG(R18)(r1) | |
| 118 | std r19,STK_REG(R19)(r1) | |
| 119 | std r20,STK_REG(R20)(r1) | |
| fde69282 AB |
120 | |
| 121 | 1: ld r0,0(r4) | |
| 122 | ld r5,8(r4) | |
| 123 | ld r6,16(r4) | |
| 124 | ld r7,24(r4) | |
| 125 | ld r8,32(r4) | |
| 126 | ld r9,40(r4) | |
| 127 | ld r10,48(r4) | |
| 128 | ld r11,56(r4) | |
| 129 | ld r12,64(r4) | |
| 130 | ld r14,72(r4) | |
| 131 | ld r15,80(r4) | |
| 132 | ld r16,88(r4) | |
| 133 | ld r17,96(r4) | |
| 134 | ld r18,104(r4) | |
| 135 | ld r19,112(r4) | |
| 136 | ld r20,120(r4) | |
| 137 | addi r4,r4,128 | |
| 138 | std r0,0(r3) | |
| 139 | std r5,8(r3) | |
| 140 | std r6,16(r3) | |
| 141 | std r7,24(r3) | |
| 142 | std r8,32(r3) | |
| 143 | std r9,40(r3) | |
| 144 | std r10,48(r3) | |
| 145 | std r11,56(r3) | |
| 146 | std r12,64(r3) | |
| 147 | std r14,72(r3) | |
| 148 | std r15,80(r3) | |
| 149 | std r16,88(r3) | |
| 150 | std r17,96(r3) | |
| 151 | std r18,104(r3) | |
| 152 | std r19,112(r3) | |
| 153 | std r20,120(r3) | |
| 154 | addi r3,r3,128 | |
| 155 | bdnz 1b | |
| 156 | ||
| c75df6f9 MN |
157 | ld r14,STK_REG(R14)(r1) |
| 158 | ld r15,STK_REG(R15)(r1) | |
| 159 | ld r16,STK_REG(R16)(r1) | |
| 160 | ld r17,STK_REG(R17)(r1) | |
| 161 | ld r18,STK_REG(R18)(r1) | |
| 162 | ld r19,STK_REG(R19)(r1) | |
| 163 | ld r20,STK_REG(R20)(r1) | |
| fde69282 AB |
164 | addi r1,r1,STACKFRAMESIZE |
| 165 | blr |