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David S. Miller0a625fd22010-05-19 14:14:04 +10001/* n2_asm.S: Hypervisor calls for NCS support.
2 *
3 * Copyright (C) 2009 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/linkage.h>
7#include <asm/hypervisor.h>
8#include "n2_core.h"
9
10 /* o0: queue type
11 * o1: RA of queue
12 * o2: num entries in queue
13 * o3: address of queue handle return
14 */
15ENTRY(sun4v_ncs_qconf)
16 mov HV_FAST_NCS_QCONF, %o5
17 ta HV_FAST_TRAP
18 stx %o1, [%o3]
19 retl
20 nop
21ENDPROC(sun4v_ncs_qconf)
22
23 /* %o0: queue handle
24 * %o1: address of queue type return
25 * %o2: address of queue base address return
26 * %o3: address of queue num entries return
27 */
28ENTRY(sun4v_ncs_qinfo)
29 mov %o1, %g1
30 mov %o2, %g2
31 mov %o3, %g3
32 mov HV_FAST_NCS_QINFO, %o5
33 ta HV_FAST_TRAP
34 stx %o1, [%g1]
35 stx %o2, [%g2]
36 stx %o3, [%g3]
37 retl
38 nop
39ENDPROC(sun4v_ncs_qinfo)
40
41 /* %o0: queue handle
42 * %o1: address of head offset return
43 */
44ENTRY(sun4v_ncs_gethead)
45 mov %o1, %o2
46 mov HV_FAST_NCS_GETHEAD, %o5
47 ta HV_FAST_TRAP
48 stx %o1, [%o2]
49 retl
50 nop
51ENDPROC(sun4v_ncs_gethead)
52
53 /* %o0: queue handle
54 * %o1: address of tail offset return
55 */
56ENTRY(sun4v_ncs_gettail)
57 mov %o1, %o2
58 mov HV_FAST_NCS_GETTAIL, %o5
59 ta HV_FAST_TRAP
60 stx %o1, [%o2]
61 retl
62 nop
63ENDPROC(sun4v_ncs_gettail)
64
65 /* %o0: queue handle
66 * %o1: new tail offset
67 */
68ENTRY(sun4v_ncs_settail)
69 mov HV_FAST_NCS_SETTAIL, %o5
70 ta HV_FAST_TRAP
71 retl
72 nop
73ENDPROC(sun4v_ncs_settail)
74
75 /* %o0: queue handle
76 * %o1: address of devino return
77 */
78ENTRY(sun4v_ncs_qhandle_to_devino)
79 mov %o1, %o2
80 mov HV_FAST_NCS_QHANDLE_TO_DEVINO, %o5
81 ta HV_FAST_TRAP
82 stx %o1, [%o2]
83 retl
84 nop
85ENDPROC(sun4v_ncs_qhandle_to_devino)
86
87 /* %o0: queue handle
88 * %o1: new head offset
89 */
90ENTRY(sun4v_ncs_sethead_marker)
91 mov HV_FAST_NCS_SETHEAD_MARKER, %o5
92 ta HV_FAST_TRAP
93 retl
94 nop
95ENDPROC(sun4v_ncs_sethead_marker)