blob: 9a67dbf340f45a5c264a0768143bb2c7405fdd62 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
David S. Miller0a625fd2010-05-19 14:14:04 +10002/* 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 */
16ENTRY(sun4v_ncs_qconf)
17 mov HV_FAST_NCS_QCONF, %o5
18 ta HV_FAST_TRAP
19 stx %o1, [%o3]
20 retl
21 nop
22ENDPROC(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 */
29ENTRY(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
40ENDPROC(sun4v_ncs_qinfo)
41
42 /* %o0: queue handle
43 * %o1: address of head offset return
44 */
45ENTRY(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
52ENDPROC(sun4v_ncs_gethead)
53
54 /* %o0: queue handle
55 * %o1: address of tail offset return
56 */
57ENTRY(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
64ENDPROC(sun4v_ncs_gettail)
65
66 /* %o0: queue handle
67 * %o1: new tail offset
68 */
69ENTRY(sun4v_ncs_settail)
70 mov HV_FAST_NCS_SETTAIL, %o5
71 ta HV_FAST_TRAP
72 retl
73 nop
74ENDPROC(sun4v_ncs_settail)
75
76 /* %o0: queue handle
77 * %o1: address of devino return
78 */
79ENTRY(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
86ENDPROC(sun4v_ncs_qhandle_to_devino)
87
88 /* %o0: queue handle
89 * %o1: new head offset
90 */
91ENTRY(sun4v_ncs_sethead_marker)
92 mov HV_FAST_NCS_SETHEAD_MARKER, %o5
93 ta HV_FAST_TRAP
94 retl
95 nop
96ENDPROC(sun4v_ncs_sethead_marker)