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gerrit-public.fairphone.software / kernel / msm-4.9 / eeb24de431ac8c80fd13a2c479cd0eb51b70484e / . / arch / ppc64 / kernel / pSeries_hvCall.S
blob: 176e8da764669c4c0c712fe819ed74b3e45c8ae6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
2 * arch/ppc64/kernel/pSeries_hvCall.S
3 *
4 * This file contains the generic code to perform a call to the
5 * pSeries LPAR hypervisor.
6 * NOTE: this file will go away when we move to inline this work.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13#include <asm/hvcall.h>
14#include <asm/processor.h>
15#include <asm/ppc_asm.h>
16
17#define STK_PARM(i) (48 + ((i)-3)*8)
18
19 .text
20
21/* long plpar_hcall(unsigned long opcode, R3
22 unsigned long arg1, R4
23 unsigned long arg2, R5
24 unsigned long arg3, R6
25 unsigned long arg4, R7
26 unsigned long *out1, R8
27 unsigned long *out2, R9
28 unsigned long *out3); R10
29 */
30_GLOBAL(plpar_hcall)
Anton Blanchardeeb24de2005-05-01 08:58:46 -0700[diff] [blame^]31 HMT_MEDIUM
32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]33 mfcr r0
34
35 std r8,STK_PARM(r8)(r1) /* Save out ptrs */
36 std r9,STK_PARM(r9)(r1)
37 std r10,STK_PARM(r10)(r1)
38
39 stw r0,8(r1)
40
41 HVSC /* invoke the hypervisor */
42
43 lwz r0,8(r1)
44
45 ld r8,STK_PARM(r8)(r1) /* Fetch r4-r6 ret args */
46 ld r9,STK_PARM(r9)(r1)
47 ld r10,STK_PARM(r10)(r1)
48 std r4,0(r8)
49 std r5,0(r9)
50 std r6,0(r10)
51
52 mtcrf 0xff,r0
53 blr /* return r3 = status */
54
55
56/* Simple interface with no output values (other than status) */
57_GLOBAL(plpar_hcall_norets)
Anton Blanchardeeb24de2005-05-01 08:58:46 -0700[diff] [blame^]58 HMT_MEDIUM
59
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]60 mfcr r0
61 stw r0,8(r1)
62
63 HVSC /* invoke the hypervisor */
64
65 lwz r0,8(r1)
66 mtcrf 0xff,r0
67 blr /* return r3 = status */
68
69
70/* long plpar_hcall_8arg_2ret(unsigned long opcode, R3
71 unsigned long arg1, R4
72 unsigned long arg2, R5
73 unsigned long arg3, R6
74 unsigned long arg4, R7
75 unsigned long arg5, R8
76 unsigned long arg6, R9
77 unsigned long arg7, R10
78 unsigned long arg8, 112(R1)
79 unsigned long *out1); 120(R1)
80 */
81_GLOBAL(plpar_hcall_8arg_2ret)
Anton Blanchardeeb24de2005-05-01 08:58:46 -0700[diff] [blame^]82 HMT_MEDIUM
83
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]84 mfcr r0
85 ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
86 stw r0,8(r1)
87
88 HVSC /* invoke the hypervisor */
89
90 lwz r0,8(r1)
91 ld r10,STK_PARM(r12)(r1) /* Fetch r4 ret arg */
92 std r4,0(r10)
93 mtcrf 0xff,r0
94 blr /* return r3 = status */
95
96
97/* long plpar_hcall_4out(unsigned long opcode, R3
98 unsigned long arg1, R4
99 unsigned long arg2, R5
100 unsigned long arg3, R6
101 unsigned long arg4, R7
102 unsigned long *out1, R8
103 unsigned long *out2, R9
104 unsigned long *out3, R10
105 unsigned long *out4); 112(R1)
106 */
107_GLOBAL(plpar_hcall_4out)
Anton Blanchardeeb24de2005-05-01 08:58:46 -0700[diff] [blame^]108 HMT_MEDIUM
109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]110 mfcr r0
111 stw r0,8(r1)
112
113 std r8,STK_PARM(r8)(r1) /* Save out ptrs */
114 std r9,STK_PARM(r9)(r1)
115 std r10,STK_PARM(r10)(r1)
116
117 HVSC /* invoke the hypervisor */
118
119 lwz r0,8(r1)
120
121 ld r8,STK_PARM(r8)(r1) /* Fetch r4-r7 ret args */
122 ld r9,STK_PARM(r9)(r1)
123 ld r10,STK_PARM(r10)(r1)
124 ld r11,STK_PARM(r11)(r1)
125 std r4,0(r8)
126 std r5,0(r9)
127 std r6,0(r10)
128 std r7,0(r11)
129
130 mtcrf 0xff,r0
131 blr /* return r3 = status */