1/* 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) 29 HMT_MEDIUM 30 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 HMT_MEDIUM 57 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) 80 HMT_MEDIUM 81 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) 106 HMT_MEDIUM 107 108 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 */ 130