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| /* SPDX-License-Identifier: GPL-2.0 */
| /* NG4copy_page.S: Niagara-4 optimized clear page.
| *
| * Copyright (C) 2012 (davem@davemloft.net)
| */
|
| #include <asm/asi.h>
| #include <asm/page.h>
|
| .text
|
| .register %g3, #scratch
|
| .align 32
| .globl NG4clear_page
| .globl NG4clear_user_page
| NG4clear_page: /* %o0=dest */
| NG4clear_user_page: /* %o0=dest, %o1=vaddr */
| set PAGE_SIZE, %g7
| mov 0x20, %g3
| 1: stxa %g0, [%o0 + %g0] ASI_ST_BLKINIT_MRU_P
| subcc %g7, 0x40, %g7
| stxa %g0, [%o0 + %g3] ASI_ST_BLKINIT_MRU_P
| bne,pt %xcc, 1b
| add %o0, 0x40, %o0
| membar #StoreLoad|#StoreStore
| retl
| nop
| .size NG4clear_page,.-NG4clear_page
| .size NG4clear_user_page,.-NG4clear_user_page
|
|
