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/* NG4copy_page.S: Niagara-4 optimized copy page.
*
* Copyright (C) 2012 (davem@davemloft.net)
*/
#include <asm/asi.h>
#include <asm/page.h>
.text
.align 32
.register %g2, #scratch
.register %g3, #scratch
.globl NG4copy_user_page
NG4copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */
prefetch [%o1 + 0x000], #n_reads_strong
prefetch [%o1 + 0x040], #n_reads_strong
prefetch [%o1 + 0x080], #n_reads_strong
prefetch [%o1 + 0x0c0], #n_reads_strong
set PAGE_SIZE, %g7
prefetch [%o1 + 0x100], #n_reads_strong
prefetch [%o1 + 0x140], #n_reads_strong
prefetch [%o1 + 0x180], #n_reads_strong
prefetch [%o1 + 0x1c0], #n_reads_strong
1:
ldx [%o1 + 0x00], %o2
subcc %g7, 0x40, %g7
ldx [%o1 + 0x08], %o3
ldx [%o1 + 0x10], %o4
ldx [%o1 + 0x18], %o5
ldx [%o1 + 0x20], %g1
stxa %o2, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
ldx [%o1 + 0x28], %g2
stxa %o3, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
ldx [%o1 + 0x30], %g3
stxa %o4, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
ldx [%o1 + 0x38], %o2
add %o1, 0x40, %o1
stxa %o5, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
stxa %g1, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
stxa %g2, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
stxa %g3, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
stxa %o2, [%o0] ASI_BLK_INIT_QUAD_LDD_P
add %o0, 0x08, %o0
bne,pt %icc, 1b
prefetch [%o1 + 0x200], #n_reads_strong
retl
membar #StoreLoad | #StoreStore
.size NG4copy_user_page,.-NG4copy_user_page
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