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1da177e4 LT |
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) | |
31 | mfcr r0 | |
32 | ||
33 | std r8,STK_PARM(r8)(r1) /* Save out ptrs */ | |
34 | std r9,STK_PARM(r9)(r1) | |
35 | std r10,STK_PARM(r10)(r1) | |
36 | ||
37 | stw r0,8(r1) | |
38 | ||
39 | HVSC /* invoke the hypervisor */ | |
40 | ||
41 | lwz r0,8(r1) | |
42 | ||
43 | ld r8,STK_PARM(r8)(r1) /* Fetch r4-r6 ret args */ | |
44 | ld r9,STK_PARM(r9)(r1) | |
45 | ld r10,STK_PARM(r10)(r1) | |
46 | std r4,0(r8) | |
47 | std r5,0(r9) | |
48 | std r6,0(r10) | |
49 | ||
50 | mtcrf 0xff,r0 | |
51 | blr /* return r3 = status */ | |
52 | ||
53 | ||
54 | /* Simple interface with no output values (other than status) */ | |
55 | _GLOBAL(plpar_hcall_norets) | |
56 | mfcr r0 | |
57 | stw r0,8(r1) | |
58 | ||
59 | HVSC /* invoke the hypervisor */ | |
60 | ||
61 | lwz r0,8(r1) | |
62 | mtcrf 0xff,r0 | |
63 | blr /* return r3 = status */ | |
64 | ||
65 | ||
66 | /* long plpar_hcall_8arg_2ret(unsigned long opcode, R3 | |
67 | unsigned long arg1, R4 | |
68 | unsigned long arg2, R5 | |
69 | unsigned long arg3, R6 | |
70 | unsigned long arg4, R7 | |
71 | unsigned long arg5, R8 | |
72 | unsigned long arg6, R9 | |
73 | unsigned long arg7, R10 | |
74 | unsigned long arg8, 112(R1) | |
75 | unsigned long *out1); 120(R1) | |
76 | */ | |
77 | _GLOBAL(plpar_hcall_8arg_2ret) | |
78 | mfcr r0 | |
79 | ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */ | |
80 | stw r0,8(r1) | |
81 | ||
82 | HVSC /* invoke the hypervisor */ | |
83 | ||
84 | lwz r0,8(r1) | |
85 | ld r10,STK_PARM(r12)(r1) /* Fetch r4 ret arg */ | |
86 | std r4,0(r10) | |
87 | mtcrf 0xff,r0 | |
88 | blr /* return r3 = status */ | |
89 | ||
90 | ||
91 | /* long plpar_hcall_4out(unsigned long opcode, R3 | |
92 | unsigned long arg1, R4 | |
93 | unsigned long arg2, R5 | |
94 | unsigned long arg3, R6 | |
95 | unsigned long arg4, R7 | |
96 | unsigned long *out1, R8 | |
97 | unsigned long *out2, R9 | |
98 | unsigned long *out3, R10 | |
99 | unsigned long *out4); 112(R1) | |
100 | */ | |
101 | _GLOBAL(plpar_hcall_4out) | |
102 | mfcr r0 | |
103 | stw r0,8(r1) | |
104 | ||
105 | std r8,STK_PARM(r8)(r1) /* Save out ptrs */ | |
106 | std r9,STK_PARM(r9)(r1) | |
107 | std r10,STK_PARM(r10)(r1) | |
108 | ||
109 | HVSC /* invoke the hypervisor */ | |
110 | ||
111 | lwz r0,8(r1) | |
112 | ||
113 | ld r8,STK_PARM(r8)(r1) /* Fetch r4-r7 ret args */ | |
114 | ld r9,STK_PARM(r9)(r1) | |
115 | ld r10,STK_PARM(r10)(r1) | |
116 | ld r11,STK_PARM(r11)(r1) | |
117 | std r4,0(r8) | |
118 | std r5,0(r9) | |
119 | std r6,0(r10) | |
120 | std r7,0(r11) | |
121 | ||
122 | mtcrf 0xff,r0 | |
123 | blr /* return r3 = status */ |