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/* 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
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