diff options
author | Anton Blanchard <anton@samba.org> | 2006-07-19 02:01:28 +0400 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2006-08-01 10:19:15 +0400 |
commit | b9377ffc3a03cde558d76349a262a1adbb6d3112 (patch) | |
tree | c61fcdb732d06c64b9c5634953e46cefdf6af846 /arch/powerpc/platforms/pseries/hvCall.S | |
parent | 57cad8084e0837e0f2c97da789ec9b3f36809be9 (diff) | |
download | linux-b9377ffc3a03cde558d76349a262a1adbb6d3112.tar.xz |
[POWERPC] clean up pseries hcall interfaces
Our pseries hcall interfaces are out of control:
plpar_hcall_norets
plpar_hcall
plpar_hcall_8arg_2ret
plpar_hcall_4out
plpar_hcall_7arg_7ret
plpar_hcall_9arg_9ret
Create 3 interfaces to cover all cases:
plpar_hcall_norets: 7 arguments no returns
plpar_hcall: 6 arguments 4 returns
plpar_hcall9: 9 arguments 9 returns
There are only 2 cases in the kernel that need plpar_hcall9, hopefully
we can keep it that way.
Pass in a buffer to stash return parameters so we avoid the &dummy1,
&dummy2 madness.
Signed-off-by: Anton Blanchard <anton@samba.org>
--
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/hvCall.S')
-rw-r--r-- | arch/powerpc/platforms/pseries/hvCall.S | 207 |
1 files changed, 35 insertions, 172 deletions
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index c9ff547f9d25..9a99b056bd27 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -1,7 +1,6 @@ /* * 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 @@ -16,42 +15,6 @@ .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 @@ -64,164 +27,64 @@ _GLOBAL(plpar_hcall_norets) 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) +_GLOBAL(plpar_hcall) 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 r4,STK_PARM(r4)(r1) /* Save ret buffer */ - std r8,STK_PARM(r8)(r1) /* Save out ptrs */ - std r9,STK_PARM(r9)(r1) - std r10,STK_PARM(r10)(r1) + mr r4,r5 + mr r5,r6 + mr r6,r7 + mr r7,r8 + mr r8,r9 + mr r9,r10 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 */ - -/* plpar_hcall_7arg_7ret(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 *out1, 112(R1) - unsigned long *out2, 110(R1) - unsigned long *out3, 108(R1) - unsigned long *out4, 106(R1) - unsigned long *out5, 104(R1) - unsigned long *out6, 102(R1) - unsigned long *out7); 100(R1) -*/ -_GLOBAL(plpar_hcall_7arg_7ret) - HMT_MEDIUM - - mfcr r0 - stw r0,8(r1) - - HVSC /* invoke the hypervisor */ + ld r12,STK_PARM(r4)(r1) + std r4, 0(r12) + std r5, 8(r12) + std r6, 16(r12) + std r7, 24(r12) lwz r0,8(r1) - - ld r11,STK_PARM(r11)(r1) /* Fetch r4 ret arg */ - std r4,0(r11) - ld r11,STK_PARM(r12)(r1) /* Fetch r5 ret arg */ - std r5,0(r11) - ld r11,STK_PARM(r13)(r1) /* Fetch r6 ret arg */ - std r6,0(r11) - ld r11,STK_PARM(r14)(r1) /* Fetch r7 ret arg */ - std r7,0(r11) - ld r11,STK_PARM(r15)(r1) /* Fetch r8 ret arg */ - std r8,0(r11) - ld r11,STK_PARM(r16)(r1) /* Fetch r9 ret arg */ - std r9,0(r11) - ld r11,STK_PARM(r17)(r1) /* Fetch r10 ret arg */ - std r10,0(r11) - mtcrf 0xff,r0 blr /* return r3 = status */ -/* plpar_hcall_9arg_9ret(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 arg9, 110(R1) - unsigned long *out1, 108(R1) - unsigned long *out2, 106(R1) - unsigned long *out3, 104(R1) - unsigned long *out4, 102(R1) - unsigned long *out5, 100(R1) - unsigned long *out6, 98(R1) - unsigned long *out7); 96(R1) - unsigned long *out8, 94(R1) - unsigned long *out9, 92(R1) -*/ -_GLOBAL(plpar_hcall_9arg_9ret) +_GLOBAL(plpar_hcall9) HMT_MEDIUM mfcr r0 stw r0,8(r1) - ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */ - ld r12,STK_PARM(r12)(r1) /* put arg9 in R12 */ + std r4,STK_PARM(r4)(r1) /* Save ret buffer */ + + mr r4,r5 + mr r5,r6 + mr r6,r7 + mr r7,r8 + mr r8,r9 + mr r9,r10 + ld r10,STK_PARM(r11)(r1) /* put arg7 in R10 */ + ld r11,STK_PARM(r12)(r1) /* put arg8 in R11 */ + ld r12,STK_PARM(r13)(r1) /* put arg9 in R12 */ HVSC /* invoke the hypervisor */ - ld r0,STK_PARM(r13)(r1) /* Fetch r4 ret arg */ - stdx r4,r0,r0 - ld r0,STK_PARM(r14)(r1) /* Fetch r5 ret arg */ - stdx r5,r0,r0 - ld r0,STK_PARM(r15)(r1) /* Fetch r6 ret arg */ - stdx r6,r0,r0 - ld r0,STK_PARM(r16)(r1) /* Fetch r7 ret arg */ - stdx r7,r0,r0 - ld r0,STK_PARM(r17)(r1) /* Fetch r8 ret arg */ - stdx r8,r0,r0 - ld r0,STK_PARM(r18)(r1) /* Fetch r9 ret arg */ - stdx r9,r0,r0 - ld r0,STK_PARM(r19)(r1) /* Fetch r10 ret arg */ - stdx r10,r0,r0 - ld r0,STK_PARM(r20)(r1) /* Fetch r11 ret arg */ - stdx r11,r0,r0 - ld r0,STK_PARM(r21)(r1) /* Fetch r12 ret arg */ - stdx r12,r0,r0 + ld r12,STK_PARM(r4)(r1) + std r4, 0(r12) + std r5, 8(r12) + std r6, 16(r12) + std r7, 24(r12) + std r8, 32(r12) + std r9, 40(r12) + std r10,48(r12) + std r11,56(r12) + std r12,64(r12) lwz r0,8(r1) mtcrf 0xff,r0 |