1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* NG4copy_page.S: Niagara-4 optimized copy page. |
3 | * |
4 | * Copyright (C) 2012 (davem@davemloft.net) |
5 | */ |
6 | |
7 | #include <asm/asi.h> |
8 | #include <asm/page.h> |
9 | |
10 | .text |
11 | .align 32 |
12 | |
13 | .register %g2, #scratch |
14 | .register %g3, #scratch |
15 | |
16 | .globl NG4copy_user_page |
17 | NG4copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */ |
18 | prefetch [%o1 + 0x000], #n_reads_strong |
19 | prefetch [%o1 + 0x040], #n_reads_strong |
20 | prefetch [%o1 + 0x080], #n_reads_strong |
21 | prefetch [%o1 + 0x0c0], #n_reads_strong |
22 | set PAGE_SIZE, %g7 |
23 | prefetch [%o1 + 0x100], #n_reads_strong |
24 | prefetch [%o1 + 0x140], #n_reads_strong |
25 | prefetch [%o1 + 0x180], #n_reads_strong |
26 | prefetch [%o1 + 0x1c0], #n_reads_strong |
27 | 1: |
28 | ldx [%o1 + 0x00], %o2 |
29 | subcc %g7, 0x40, %g7 |
30 | ldx [%o1 + 0x08], %o3 |
31 | ldx [%o1 + 0x10], %o4 |
32 | ldx [%o1 + 0x18], %o5 |
33 | ldx [%o1 + 0x20], %g1 |
34 | stxa %o2, [%o0] ASI_ST_BLKINIT_MRU_P |
35 | add %o0, 0x08, %o0 |
36 | ldx [%o1 + 0x28], %g2 |
37 | stxa %o3, [%o0] ASI_ST_BLKINIT_MRU_P |
38 | add %o0, 0x08, %o0 |
39 | ldx [%o1 + 0x30], %g3 |
40 | stxa %o4, [%o0] ASI_ST_BLKINIT_MRU_P |
41 | add %o0, 0x08, %o0 |
42 | ldx [%o1 + 0x38], %o2 |
43 | add %o1, 0x40, %o1 |
44 | stxa %o5, [%o0] ASI_ST_BLKINIT_MRU_P |
45 | add %o0, 0x08, %o0 |
46 | stxa %g1, [%o0] ASI_ST_BLKINIT_MRU_P |
47 | add %o0, 0x08, %o0 |
48 | stxa %g2, [%o0] ASI_ST_BLKINIT_MRU_P |
49 | add %o0, 0x08, %o0 |
50 | stxa %g3, [%o0] ASI_ST_BLKINIT_MRU_P |
51 | add %o0, 0x08, %o0 |
52 | stxa %o2, [%o0] ASI_ST_BLKINIT_MRU_P |
53 | add %o0, 0x08, %o0 |
54 | bne,pt %icc, 1b |
55 | prefetch [%o1 + 0x200], #n_reads_strong |
56 | retl |
57 | membar #StoreLoad | #StoreStore |
58 | .size NG4copy_user_page,.-NG4copy_user_page |
59 | |