1/* SPDX-License-Identifier: GPL-2.0 */
2/* n2-asm.S: Niagara2 RNG hypervisor call assembler.
3 *
4 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
5 */
6#include <linux/linkage.h>
7#include <asm/hypervisor.h>
8#include "n2rng.h"
9
10	.text
11
12ENTRY(sun4v_rng_get_diag_ctl)
13	mov	HV_FAST_RNG_GET_DIAG_CTL, %o5
14	ta	HV_FAST_TRAP
15	retl
16	 nop
17ENDPROC(sun4v_rng_get_diag_ctl)
18
19ENTRY(sun4v_rng_ctl_read_v1)
20	mov	%o1, %o3
21	mov	%o2, %o4
22	mov	HV_FAST_RNG_CTL_READ, %o5
23	ta	HV_FAST_TRAP
24	stx	%o1, [%o3]
25	retl
26	 stx	%o2, [%o4]
27ENDPROC(sun4v_rng_ctl_read_v1)
28
29ENTRY(sun4v_rng_ctl_read_v2)
30	save	%sp, -192, %sp
31	mov	%i0, %o0
32	mov	%i1, %o1
33	mov	HV_FAST_RNG_CTL_READ, %o5
34	ta	HV_FAST_TRAP
35	stx	%o1, [%i2]
36	stx	%o2, [%i3]
37	stx	%o3, [%i4]
38	stx	%o4, [%i5]
39	ret
40	restore	%g0, %o0, %o0
41ENDPROC(sun4v_rng_ctl_read_v2)
42
43ENTRY(sun4v_rng_ctl_write_v1)
44	mov	%o3, %o4
45	mov	HV_FAST_RNG_CTL_WRITE, %o5
46	ta	HV_FAST_TRAP
47	retl
48	 stx	%o1, [%o4]
49ENDPROC(sun4v_rng_ctl_write_v1)
50
51ENTRY(sun4v_rng_ctl_write_v2)
52	mov	HV_FAST_RNG_CTL_WRITE, %o5
53	ta	HV_FAST_TRAP
54	retl
55	 nop
56ENDPROC(sun4v_rng_ctl_write_v2)
57
58ENTRY(sun4v_rng_data_read_diag_v1)
59	mov	%o2, %o4
60	mov	HV_FAST_RNG_DATA_READ_DIAG, %o5
61	ta	HV_FAST_TRAP
62	retl
63	 stx	%o1, [%o4]
64ENDPROC(sun4v_rng_data_read_diag_v1)
65
66ENTRY(sun4v_rng_data_read_diag_v2)
67	mov	%o3, %o4
68	mov	HV_FAST_RNG_DATA_READ_DIAG, %o5
69	ta	HV_FAST_TRAP
70	retl
71	 stx	%o1, [%o4]
72ENDPROC(sun4v_rng_data_read_diag_v2)
73
74ENTRY(sun4v_rng_data_read)
75	mov	%o1, %o4
76	mov	HV_FAST_RNG_DATA_READ, %o5
77	ta	HV_FAST_TRAP
78	retl
79	 stx	%o1, [%o4]
80ENDPROC(sun4v_rng_data_read)
81