From ebb4c65869db7213280ad9c510637683939b5ff8 Mon Sep 17 00:00:00 2001
From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Sun, 9 Nov 2008 11:18:36 +0000
Subject: [ARM] iop: iop3xx needs registers mapped uncached+unbuffered
Mikael Pettersson reported:
The 2.6.28-rc kernels fail to detect PCI device 0000:00:01.0
(the first ethernet port) on my Thecus n2100 XScale box.
There is however still a strange "ghost" device that gets partially
detected in 2.6.28-rc2 vanilla.
The IOP321 manual says:
The user designates the memory region containing the OCCDR as
non-cacheable and non-bufferable from the IntelR XScaleTM core.
This guarantees that all load/stores to the OCCDR are only of
DWORD quantities.
Ensure that the OCCDR is so mapped.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
arch/arm/include/asm/mach/map.h | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
(limited to 'arch/arm/include/asm')
diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
index cb1139ac194..39d949b63e8 100644
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -19,12 +19,13 @@ struct map_desc {
};
/* types 0-3 are defined in asm/io.h */
-#define MT_CACHECLEAN 4
-#define MT_MINICLEAN 5
-#define MT_LOW_VECTORS 6
-#define MT_HIGH_VECTORS 7
-#define MT_MEMORY 8
-#define MT_ROM 9
+#define MT_UNCACHED 4
+#define MT_CACHECLEAN 5
+#define MT_MINICLEAN 6
+#define MT_LOW_VECTORS 7
+#define MT_HIGH_VECTORS 8
+#define MT_MEMORY 9
+#define MT_ROM 10
#ifdef CONFIG_MMU
extern void iotable_init(struct map_desc *, int);
--
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