Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
31 lines
682 B
ArmAsm
31 lines
682 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/* NG4copy_page.S: Niagara-4 optimized clear page.
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*
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* Copyright (C) 2012 (davem@davemloft.net)
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*/
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#include <asm/asi.h>
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#include <asm/page.h>
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.text
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.register %g3, #scratch
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.align 32
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.globl NG4clear_page
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.globl NG4clear_user_page
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NG4clear_page: /* %o0=dest */
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NG4clear_user_page: /* %o0=dest, %o1=vaddr */
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set PAGE_SIZE, %g7
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mov 0x20, %g3
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1: stxa %g0, [%o0 + %g0] ASI_ST_BLKINIT_MRU_P
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subcc %g7, 0x40, %g7
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stxa %g0, [%o0 + %g3] ASI_ST_BLKINIT_MRU_P
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bne,pt %xcc, 1b
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add %o0, 0x40, %o0
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membar #StoreLoad|#StoreStore
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retl
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nop
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.size NG4clear_page,.-NG4clear_page
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.size NG4clear_user_page,.-NG4clear_user_page
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