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/*
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* arch/ppc64/kernel/pSeries_hvCall.S
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*
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* This file contains the generic code to perform a call to the
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* pSeries LPAR hypervisor.
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* NOTE: this file will go away when we move to inline this work.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <asm/hvcall.h>
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#include <asm/processor.h>
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#include <asm/ppc_asm.h>
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#define STK_PARM(i) (48 + ((i)-3)*8)
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.text
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/* long plpar_hcall(unsigned long opcode, R3
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unsigned long arg1, R4
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unsigned long arg2, R5
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unsigned long arg3, R6
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unsigned long arg4, R7
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unsigned long *out1, R8
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unsigned long *out2, R9
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unsigned long *out3); R10
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*/
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_GLOBAL(plpar_hcall)
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HMT_MEDIUM
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mfcr r0
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std r8,STK_PARM(r8)(r1) /* Save out ptrs */
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std r9,STK_PARM(r9)(r1)
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std r10,STK_PARM(r10)(r1)
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stw r0,8(r1)
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HVSC /* invoke the hypervisor */
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lwz r0,8(r1)
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ld r8,STK_PARM(r8)(r1) /* Fetch r4-r6 ret args */
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ld r9,STK_PARM(r9)(r1)
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ld r10,STK_PARM(r10)(r1)
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std r4,0(r8)
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std r5,0(r9)
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std r6,0(r10)
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mtcrf 0xff,r0
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blr /* return r3 = status */
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/* Simple interface with no output values (other than status) */
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_GLOBAL(plpar_hcall_norets)
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HMT_MEDIUM
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mfcr r0
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stw r0,8(r1)
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HVSC /* invoke the hypervisor */
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lwz r0,8(r1)
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mtcrf 0xff,r0
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blr /* return r3 = status */
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/* long plpar_hcall_8arg_2ret(unsigned long opcode, R3
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unsigned long arg1, R4
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unsigned long arg2, R5
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unsigned long arg3, R6
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unsigned long arg4, R7
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unsigned long arg5, R8
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unsigned long arg6, R9
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unsigned long arg7, R10
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unsigned long arg8, 112(R1)
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unsigned long *out1); 120(R1)
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*/
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_GLOBAL(plpar_hcall_8arg_2ret)
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HMT_MEDIUM
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mfcr r0
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ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
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stw r0,8(r1)
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HVSC /* invoke the hypervisor */
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lwz r0,8(r1)
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ld r10,STK_PARM(r12)(r1) /* Fetch r4 ret arg */
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std r4,0(r10)
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mtcrf 0xff,r0
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blr /* return r3 = status */
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/* long plpar_hcall_4out(unsigned long opcode, R3
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unsigned long arg1, R4
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unsigned long arg2, R5
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unsigned long arg3, R6
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unsigned long arg4, R7
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unsigned long *out1, R8
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unsigned long *out2, R9
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unsigned long *out3, R10
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unsigned long *out4); 112(R1)
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*/
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_GLOBAL(plpar_hcall_4out)
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HMT_MEDIUM
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mfcr r0
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stw r0,8(r1)
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std r8,STK_PARM(r8)(r1) /* Save out ptrs */
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std r9,STK_PARM(r9)(r1)
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std r10,STK_PARM(r10)(r1)
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HVSC /* invoke the hypervisor */
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lwz r0,8(r1)
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ld r8,STK_PARM(r8)(r1) /* Fetch r4-r7 ret args */
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ld r9,STK_PARM(r9)(r1)
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ld r10,STK_PARM(r10)(r1)
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ld r11,STK_PARM(r11)(r1)
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std r4,0(r8)
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std r5,0(r9)
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std r6,0(r10)
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std r7,0(r11)
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mtcrf 0xff,r0
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blr /* return r3 = status */
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