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