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[POWERPC] clean up pseries hcall interfaces

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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>
This commit is contained in:
Anton Blanchard
2006-07-19 08:01:28 +10:00
committed by Paul Mackerras
parent 57cad8084e
commit b9377ffc3a
10 changed files with 186 additions and 315 deletions
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5
arch/powerpc/platforms/pseries/hvconsole.c
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@@ -27,6 +27,7 @@
#include <linux/module.h>
#include <asm/hvcall.h>
#include <asm/hvconsole.h>
#include "plpar_wrappers.h"
/**
* hvc_get_chars - retrieve characters from firmware for denoted vterm adatper
@@ -40,9 +41,9 @@ int hvc_get_chars(uint32_t vtermno, char *buf, int count)
{
unsigned long got;
if (plpar_hcall(H_GET_TERM_CHAR, vtermno, 0, 0, 0, &got,
(unsigned long *)buf, (unsigned long *)buf+1) == H_SUCCESS)
if (plpar_get_term_char(vtermno, &got, buf) == H_SUCCESS)
return got;
return 0;
}