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[ARM] 3009/1: S3C2410 - io.h offsets too large for LDRH/STRH

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Patch from Ben Dooks

The __inwc/__outwc calls are capable of creating
LDRH and STRH instructions with offsets over 8bits
as GCC does not have a constraint for an 8bit
offset.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ben Dooks 2005-10-14 12:24:24 +01:00 committed by Russell King
parent 13b1f64c16
commit 6205d158d1
1 changed files with 42 additions and 16 deletions
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58
include/asm-arm/arch-s3c2410/io.h
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@ -9,7 +9,7 @@
* 06-Dec-1997 RMK Created.
* 02-Sep-2003 BJD Modified for S3C2410
* 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
*
* 13-Oct-2005 BJD Fixed problems with LDRH/STRH offset range
*/
#ifndef __ASM_ARM_ARCH_IO_H
@ -97,7 +97,7 @@ DECLARE_IO(int,l,"")
else \
__asm__ __volatile__( \
"strb %0, [%1, #0] @ outbc" \
: : "r" (value), "r" ((port))); \
: : "r" (value), "r" ((port))); \
})
#define __inbc(port) \
@ -110,35 +110,61 @@ DECLARE_IO(int,l,"")
else \
__asm__ __volatile__( \
"ldrb %0, [%1, #0] @ inbc" \
: "=r" (result) : "r" ((port))); \
: "=r" (result) : "r" ((port))); \
result; \
})
#define __outwc(value,port) \
({ \
unsigned long v = value; \
if (__PORT_PCIO((port))) \
__asm__ __volatile__( \
"strh %0, [%1, %2] @ outwc" \
: : "r" (v), "r" (PCIO_BASE), "Jr" ((port))); \
else \
if (__PORT_PCIO((port))) { \
if ((port) < 256 && (port) > -256) \
__asm__ __volatile__( \
"strh %0, [%1, %2] @ outwc" \
: : "r" (v), "r" (PCIO_BASE), "Jr" ((port))); \
else if ((port) > 0) \
__asm__ __volatile__( \
"strh %0, [%1, %2] @ outwc" \
: : "r" (v), \
"r" (PCIO_BASE + ((port) & ~0xff)), \
"Jr" (((port) & 0xff))); \
else \
__asm__ __volatile__( \
"strh %0, [%1, #0] @ outwc" \
: : "r" (v), \
"r" (PCIO_BASE + (port))); \
} else \
__asm__ __volatile__( \
"strh %0, [%1, #0] @ outwc" \
: : "r" (v), "r" ((port))); \
: : "r" (v), "r" ((port))); \
})
#define __inwc(port) \
({ \
unsigned short result; \
if (__PORT_PCIO((port))) \
__asm__ __volatile__( \
"ldrh %0, [%1, %2] @ inwc" \
: "=r" (result) : "r" (PCIO_BASE), "Jr" ((port))); \
else \
if (__PORT_PCIO((port))) { \
if ((port) < 256 && (port) > -256 ) \
__asm__ __volatile__( \
"ldrh %0, [%1, %2] @ inwc" \
: "=r" (result) \
: "r" (PCIO_BASE), \
"Jr" ((port))); \
else if ((port) > 0) \
__asm__ __volatile__( \
"ldrh %0, [%1, %2] @ inwc" \
: "=r" (result) \
: "r" (PCIO_BASE + ((port) & ~0xff)), \
"Jr" (((port) & 0xff))); \
else \
__asm__ __volatile__( \
"ldrh %0, [%1, #0] @ inwc" \
: "=r" (result) \
: "r" (PCIO_BASE + ((port)))); \
} else \
__asm__ __volatile__( \
"ldrh %0, [%1, #0] @ inwc" \
: "=r" (result) : "r" ((port))); \
result; \
: "=r" (result) : "r" ((port))); \
result; \
})
#define __outlc(value,port) \