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x86: SGI UV: Add volatile semantics to macros that access chipset registers

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Add volatile-semantics to the SGI UV read/write macros that are
used to access chipset memory mapped registers. No direct
references to volatile are made. Instead the readq/writeq macros
are used.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Cc: dwalker@fifo99.com
Cc: cfriesen@nortel.com
LKML-Reference: <20090910143149.GA14273@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jack Steiner 2009-09-10 09:31:49 -05:00 committed by Ingo Molnar
parent d2374aecda
commit 8dc579e868
1 changed files with 9 additions and 8 deletions
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17
arch/x86/include/asm/uv/uv_hub.h
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@ -15,6 +15,7 @@
#include <linux/numa.h>
#include <linux/percpu.h>
#include <linux/timer.h>
#include <linux/io.h>
#include <asm/types.h>
#include <asm/percpu.h>
#include <asm/uv/uv_mmrs.h>
@ -258,13 +259,13 @@ static inline unsigned long *uv_global_mmr32_address(int pnode,
static inline void uv_write_global_mmr32(int pnode, unsigned long offset,
unsigned long val)
{
*uv_global_mmr32_address(pnode, offset) = val;
writeq(val, uv_global_mmr32_address(pnode, offset));
}
static inline unsigned long uv_read_global_mmr32(int pnode,
unsigned long offset)
{
return *uv_global_mmr32_address(pnode, offset);
return readq(uv_global_mmr32_address(pnode, offset));
}
/*
@ -281,13 +282,13 @@ static inline unsigned long *uv_global_mmr64_address(int pnode,
static inline void uv_write_global_mmr64(int pnode, unsigned long offset,
unsigned long val)
{
*uv_global_mmr64_address(pnode, offset) = val;
writeq(val, uv_global_mmr64_address(pnode, offset));
}
static inline unsigned long uv_read_global_mmr64(int pnode,
unsigned long offset)
{
return *uv_global_mmr64_address(pnode, offset);
return readq(uv_global_mmr64_address(pnode, offset));
}
/*
@ -301,22 +302,22 @@ static inline unsigned long *uv_local_mmr_address(unsigned long offset)
static inline unsigned long uv_read_local_mmr(unsigned long offset)
{
return *uv_local_mmr_address(offset);
return readq(uv_local_mmr_address(offset));
}
static inline void uv_write_local_mmr(unsigned long offset, unsigned long val)
{
*uv_local_mmr_address(offset) = val;
writeq(val, uv_local_mmr_address(offset));
}
static inline unsigned char uv_read_local_mmr8(unsigned long offset)
{
return *((unsigned char *)uv_local_mmr_address(offset));
return readb(uv_local_mmr_address(offset));
}
static inline void uv_write_local_mmr8(unsigned long offset, unsigned char val)
{
*((unsigned char *)uv_local_mmr_address(offset)) = val;
writeb(val, uv_local_mmr_address(offset));
}
/*