forked from mirrors/linux
1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
153 lines
2.8 KiB
ArmAsm
153 lines
2.8 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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*
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* Copyright (C) IBM Corporation, 2012
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*
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* Author: Anton Blanchard <anton@au.ibm.com>
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*/
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#include <asm/page.h>
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#include <asm/ppc_asm.h>
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_GLOBAL(copypage_power7)
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/*
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* We prefetch both the source and destination using enhanced touch
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* instructions. We use a stream ID of 0 for the load side and
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* 1 for the store side. Since source and destination are page
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* aligned we don't need to clear the bottom 7 bits of either
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* address.
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*/
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ori r9,r3,1 /* stream=1 => to */
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#ifdef CONFIG_PPC_64K_PAGES
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lis r7,0x0E01 /* depth=7
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* units/cachelines=512 */
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#else
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lis r7,0x0E00 /* depth=7 */
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ori r7,r7,0x1000 /* units/cachelines=32 */
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#endif
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ori r10,r7,1 /* stream=1 */
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lis r8,0x8000 /* GO=1 */
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clrldi r8,r8,32
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/* setup read stream 0 */
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dcbt 0,r4,0b01000 /* addr from */
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dcbt 0,r7,0b01010 /* length and depth from */
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/* setup write stream 1 */
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dcbtst 0,r9,0b01000 /* addr to */
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dcbtst 0,r10,0b01010 /* length and depth to */
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eieio
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dcbt 0,r8,0b01010 /* all streams GO */
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#ifdef CONFIG_ALTIVEC
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mflr r0
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std r3,-STACKFRAMESIZE+STK_REG(R31)(r1)
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std r4,-STACKFRAMESIZE+STK_REG(R30)(r1)
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std r0,16(r1)
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stdu r1,-STACKFRAMESIZE(r1)
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bl enter_vmx_ops
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cmpwi r3,0
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ld r0,STACKFRAMESIZE+16(r1)
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ld r3,STK_REG(R31)(r1)
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ld r4,STK_REG(R30)(r1)
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mtlr r0
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li r0,(PAGE_SIZE/128)
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mtctr r0
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beq .Lnonvmx_copy
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addi r1,r1,STACKFRAMESIZE
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li r6,16
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li r7,32
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li r8,48
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li r9,64
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li r10,80
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li r11,96
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li r12,112
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.align 5
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1: lvx v7,0,r4
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lvx v6,r4,r6
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lvx v5,r4,r7
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lvx v4,r4,r8
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lvx v3,r4,r9
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lvx v2,r4,r10
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lvx v1,r4,r11
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lvx v0,r4,r12
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addi r4,r4,128
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stvx v7,0,r3
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stvx v6,r3,r6
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stvx v5,r3,r7
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stvx v4,r3,r8
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stvx v3,r3,r9
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stvx v2,r3,r10
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stvx v1,r3,r11
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stvx v0,r3,r12
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addi r3,r3,128
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bdnz 1b
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b exit_vmx_ops /* tail call optimise */
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#else
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li r0,(PAGE_SIZE/128)
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mtctr r0
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stdu r1,-STACKFRAMESIZE(r1)
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#endif
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.Lnonvmx_copy:
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std r14,STK_REG(R14)(r1)
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std r15,STK_REG(R15)(r1)
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std r16,STK_REG(R16)(r1)
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std r17,STK_REG(R17)(r1)
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std r18,STK_REG(R18)(r1)
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std r19,STK_REG(R19)(r1)
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std r20,STK_REG(R20)(r1)
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1: ld r0,0(r4)
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ld r5,8(r4)
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ld r6,16(r4)
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ld r7,24(r4)
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ld r8,32(r4)
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ld r9,40(r4)
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ld r10,48(r4)
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ld r11,56(r4)
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ld r12,64(r4)
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ld r14,72(r4)
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ld r15,80(r4)
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ld r16,88(r4)
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ld r17,96(r4)
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ld r18,104(r4)
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ld r19,112(r4)
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ld r20,120(r4)
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addi r4,r4,128
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std r0,0(r3)
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std r5,8(r3)
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std r6,16(r3)
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std r7,24(r3)
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std r8,32(r3)
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std r9,40(r3)
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std r10,48(r3)
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std r11,56(r3)
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std r12,64(r3)
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std r14,72(r3)
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std r15,80(r3)
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std r16,88(r3)
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std r17,96(r3)
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std r18,104(r3)
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std r19,112(r3)
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std r20,120(r3)
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addi r3,r3,128
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bdnz 1b
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ld r14,STK_REG(R14)(r1)
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ld r15,STK_REG(R15)(r1)
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ld r16,STK_REG(R16)(r1)
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ld r17,STK_REG(R17)(r1)
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ld r18,STK_REG(R18)(r1)
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ld r19,STK_REG(R19)(r1)
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ld r20,STK_REG(R20)(r1)
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addi r1,r1,STACKFRAMESIZE
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blr
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