projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 1da177e4 LT |
2 | * This file contains the generic code to perform a call to the |
| 3 | * pSeries LPAR hypervisor. | |
| 4 | * NOTE: this file will go away when we move to inline this work. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the License, or (at your option) any later version. | |
| 10 | */ | |
| 11 | #include <asm/hvcall.h> | |
| 12 | #include <asm/processor.h> | |
| 13 | #include <asm/ppc_asm.h> | |
| 14 | ||
| 15 | #define STK_PARM(i) (48 + ((i)-3)*8) | |
| 16 | ||
| 17 | .text | |
| 18 | ||
| 19 | /* long plpar_hcall(unsigned long opcode, R3 | |
| 20 | unsigned long arg1, R4 | |
| 21 | unsigned long arg2, R5 | |
| 22 | unsigned long arg3, R6 | |
| 23 | unsigned long arg4, R7 | |
| 24 | unsigned long *out1, R8 | |
| 25 | unsigned long *out2, R9 | |
| 26 | unsigned long *out3); R10 | |
| 27 | */ | |
| 28 | _GLOBAL(plpar_hcall) | |
| eeb24de4 AB |
29 | HMT_MEDIUM |
| 30 | ||
| 1da177e4 LT |
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) | |
| eeb24de4 AB |
56 | HMT_MEDIUM |
| 57 | ||
| 1da177e4 LT |
58 | mfcr r0 |
| 59 | stw r0,8(r1) | |
| 60 | ||
| 61 | HVSC /* invoke the hypervisor */ | |
| 62 | ||
| 63 | lwz r0,8(r1) | |
| 64 | mtcrf 0xff,r0 | |
| 65 | blr /* return r3 = status */ | |
| 66 | ||
| 67 | ||
| 68 | /* long plpar_hcall_8arg_2ret(unsigned long opcode, R3 | |
| 69 | unsigned long arg1, R4 | |
| 70 | unsigned long arg2, R5 | |
| 71 | unsigned long arg3, R6 | |
| 72 | unsigned long arg4, R7 | |
| 73 | unsigned long arg5, R8 | |
| 74 | unsigned long arg6, R9 | |
| 75 | unsigned long arg7, R10 | |
| 76 | unsigned long arg8, 112(R1) | |
| 77 | unsigned long *out1); 120(R1) | |
| 78 | */ | |
| 79 | _GLOBAL(plpar_hcall_8arg_2ret) | |
| eeb24de4 AB |
80 | HMT_MEDIUM |
| 81 | ||
| 1da177e4 LT |
82 | mfcr r0 |
| 83 | ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */ | |
| 84 | stw r0,8(r1) | |
| 85 | ||
| 86 | HVSC /* invoke the hypervisor */ | |
| 87 | ||
| 88 | lwz r0,8(r1) | |
| 89 | ld r10,STK_PARM(r12)(r1) /* Fetch r4 ret arg */ | |
| 90 | std r4,0(r10) | |
| 91 | mtcrf 0xff,r0 | |
| 92 | blr /* return r3 = status */ | |
| 93 | ||
| 94 | ||
| 95 | /* long plpar_hcall_4out(unsigned long opcode, R3 | |
| 96 | unsigned long arg1, R4 | |
| 97 | unsigned long arg2, R5 | |
| 98 | unsigned long arg3, R6 | |
| 99 | unsigned long arg4, R7 | |
| 100 | unsigned long *out1, R8 | |
| 101 | unsigned long *out2, R9 | |
| 102 | unsigned long *out3, R10 | |
| 103 | unsigned long *out4); 112(R1) | |
| 104 | */ | |
| 105 | _GLOBAL(plpar_hcall_4out) | |
| eeb24de4 AB |
106 | HMT_MEDIUM |
| 107 | ||
| 1da177e4 LT |
108 | mfcr r0 |
| 109 | stw r0,8(r1) | |
| 110 | ||
| 111 | std r8,STK_PARM(r8)(r1) /* Save out ptrs */ | |
| 112 | std r9,STK_PARM(r9)(r1) | |
| 113 | std r10,STK_PARM(r10)(r1) | |
| 114 | ||
| 115 | HVSC /* invoke the hypervisor */ | |
| 116 | ||
| 117 | lwz r0,8(r1) | |
| 118 | ||
| 119 | ld r8,STK_PARM(r8)(r1) /* Fetch r4-r7 ret args */ | |
| 120 | ld r9,STK_PARM(r9)(r1) | |
| 121 | ld r10,STK_PARM(r10)(r1) | |
| 122 | ld r11,STK_PARM(r11)(r1) | |
| 123 | std r4,0(r8) | |
| 124 | std r5,0(r9) | |
| 125 | std r6,0(r10) | |
| 126 | std r7,0(r11) | |
| 127 | ||
| 128 | mtcrf 0xff,r0 | |
| 129 | blr /* return r3 = status */ |