Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
0a625fd2 DM |
2 | /* n2_asm.S: Hypervisor calls for NCS support. |
3 | * | |
4 | * Copyright (C) 2009 David S. Miller <davem@davemloft.net> | |
5 | */ | |
6 | ||
7 | #include <linux/linkage.h> | |
8 | #include <asm/hypervisor.h> | |
9 | #include "n2_core.h" | |
10 | ||
11 | /* o0: queue type | |
12 | * o1: RA of queue | |
13 | * o2: num entries in queue | |
14 | * o3: address of queue handle return | |
15 | */ | |
16 | ENTRY(sun4v_ncs_qconf) | |
17 | mov HV_FAST_NCS_QCONF, %o5 | |
18 | ta HV_FAST_TRAP | |
19 | stx %o1, [%o3] | |
20 | retl | |
21 | nop | |
22 | ENDPROC(sun4v_ncs_qconf) | |
23 | ||
24 | /* %o0: queue handle | |
25 | * %o1: address of queue type return | |
26 | * %o2: address of queue base address return | |
27 | * %o3: address of queue num entries return | |
28 | */ | |
29 | ENTRY(sun4v_ncs_qinfo) | |
30 | mov %o1, %g1 | |
31 | mov %o2, %g2 | |
32 | mov %o3, %g3 | |
33 | mov HV_FAST_NCS_QINFO, %o5 | |
34 | ta HV_FAST_TRAP | |
35 | stx %o1, [%g1] | |
36 | stx %o2, [%g2] | |
37 | stx %o3, [%g3] | |
38 | retl | |
39 | nop | |
40 | ENDPROC(sun4v_ncs_qinfo) | |
41 | ||
42 | /* %o0: queue handle | |
43 | * %o1: address of head offset return | |
44 | */ | |
45 | ENTRY(sun4v_ncs_gethead) | |
46 | mov %o1, %o2 | |
47 | mov HV_FAST_NCS_GETHEAD, %o5 | |
48 | ta HV_FAST_TRAP | |
49 | stx %o1, [%o2] | |
50 | retl | |
51 | nop | |
52 | ENDPROC(sun4v_ncs_gethead) | |
53 | ||
54 | /* %o0: queue handle | |
55 | * %o1: address of tail offset return | |
56 | */ | |
57 | ENTRY(sun4v_ncs_gettail) | |
58 | mov %o1, %o2 | |
59 | mov HV_FAST_NCS_GETTAIL, %o5 | |
60 | ta HV_FAST_TRAP | |
61 | stx %o1, [%o2] | |
62 | retl | |
63 | nop | |
64 | ENDPROC(sun4v_ncs_gettail) | |
65 | ||
66 | /* %o0: queue handle | |
67 | * %o1: new tail offset | |
68 | */ | |
69 | ENTRY(sun4v_ncs_settail) | |
70 | mov HV_FAST_NCS_SETTAIL, %o5 | |
71 | ta HV_FAST_TRAP | |
72 | retl | |
73 | nop | |
74 | ENDPROC(sun4v_ncs_settail) | |
75 | ||
76 | /* %o0: queue handle | |
77 | * %o1: address of devino return | |
78 | */ | |
79 | ENTRY(sun4v_ncs_qhandle_to_devino) | |
80 | mov %o1, %o2 | |
81 | mov HV_FAST_NCS_QHANDLE_TO_DEVINO, %o5 | |
82 | ta HV_FAST_TRAP | |
83 | stx %o1, [%o2] | |
84 | retl | |
85 | nop | |
86 | ENDPROC(sun4v_ncs_qhandle_to_devino) | |
87 | ||
88 | /* %o0: queue handle | |
89 | * %o1: new head offset | |
90 | */ | |
91 | ENTRY(sun4v_ncs_sethead_marker) | |
92 | mov HV_FAST_NCS_SETHEAD_MARKER, %o5 | |
93 | ta HV_FAST_TRAP | |
94 | retl | |
95 | nop | |
96 | ENDPROC(sun4v_ncs_sethead_marker) |