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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ce087150 DM |
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 | ||
12 | ENTRY(sun4v_rng_get_diag_ctl) | |
13 | mov HV_FAST_RNG_GET_DIAG_CTL, %o5 | |
14 | ta HV_FAST_TRAP | |
15 | retl | |
16 | nop | |
17 | ENDPROC(sun4v_rng_get_diag_ctl) | |
18 | ||
19 | ENTRY(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] | |
27 | ENDPROC(sun4v_rng_ctl_read_v1) | |
28 | ||
29 | ENTRY(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 | |
41 | ENDPROC(sun4v_rng_ctl_read_v2) | |
42 | ||
43 | ENTRY(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] | |
49 | ENDPROC(sun4v_rng_ctl_write_v1) | |
50 | ||
51 | ENTRY(sun4v_rng_ctl_write_v2) | |
52 | mov HV_FAST_RNG_CTL_WRITE, %o5 | |
53 | ta HV_FAST_TRAP | |
54 | retl | |
55 | nop | |
56 | ENDPROC(sun4v_rng_ctl_write_v2) | |
57 | ||
58 | ENTRY(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] | |
64 | ENDPROC(sun4v_rng_data_read_diag_v1) | |
65 | ||
66 | ENTRY(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] | |
72 | ENDPROC(sun4v_rng_data_read_diag_v2) | |
73 | ||
74 | ENTRY(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] | |
80 | ENDPROC(sun4v_rng_data_read) |