1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
 4 */
 5#include <linux/linkage.h>
 6#include <asm/asm.h>
 7#include <asm/export.h>
 8#include <asm/page.h>
 9#include <asm/regdef.h>
10
11	.align 5
12SYM_FUNC_START(clear_page)
13	lu12i.w	t0, 1 << (PAGE_SHIFT - 12)
14	add.d	t0, t0, a0
151:
16	st.d	zero, a0, 0
17	st.d	zero, a0, 8
18	st.d	zero, a0, 16
19	st.d	zero, a0, 24
20	st.d	zero, a0, 32
21	st.d	zero, a0, 40
22	st.d	zero, a0, 48
23	st.d	zero, a0, 56
24	addi.d	a0,   a0, 128
25	st.d	zero, a0, -64
26	st.d	zero, a0, -56
27	st.d	zero, a0, -48
28	st.d	zero, a0, -40
29	st.d	zero, a0, -32
30	st.d	zero, a0, -24
31	st.d	zero, a0, -16
32	st.d	zero, a0, -8
33	bne	t0,   a0, 1b
34
35	jr	ra
36SYM_FUNC_END(clear_page)
37EXPORT_SYMBOL(clear_page)
38
39.align 5
40SYM_FUNC_START(copy_page)
41	lu12i.w	t8, 1 << (PAGE_SHIFT - 12)
42	add.d	t8, t8, a0
431:
44	ld.d	t0, a1, 0
45	ld.d	t1, a1, 8
46	ld.d	t2, a1, 16
47	ld.d	t3, a1, 24
48	ld.d	t4, a1, 32
49	ld.d	t5, a1, 40
50	ld.d	t6, a1, 48
51	ld.d	t7, a1, 56
52
53	st.d	t0, a0, 0
54	st.d	t1, a0, 8
55	ld.d	t0, a1, 64
56	ld.d	t1, a1, 72
57	st.d	t2, a0, 16
58	st.d	t3, a0, 24
59	ld.d	t2, a1, 80
60	ld.d	t3, a1, 88
61	st.d	t4, a0, 32
62	st.d	t5, a0, 40
63	ld.d	t4, a1, 96
64	ld.d	t5, a1, 104
65	st.d	t6, a0, 48
66	st.d	t7, a0, 56
67	ld.d	t6, a1, 112
68	ld.d	t7, a1, 120
69	addi.d	a0, a0, 128
70	addi.d	a1, a1, 128
71
72	st.d	t0, a0, -64
73	st.d	t1, a0, -56
74	st.d	t2, a0, -48
75	st.d	t3, a0, -40
76	st.d	t4, a0, -32
77	st.d	t5, a0, -24
78	st.d	t6, a0, -16
79	st.d	t7, a0, -8
80
81	bne	t8, a0, 1b
82	jr	ra
83SYM_FUNC_END(copy_page)
84EXPORT_SYMBOL(copy_page)