[PATCH] Fix FRV PCI config space write

[David Howells]

The attached patch makes byte and word writes to PCI config space work. The
problem was that the pointer to the appropriate chunk of the config port needs
to be juggled to allow for the fact that FRV is big endian in this case.

Signed-Off-By: David Howells <dhowells@xxxxxxxxxx>
---
warthog>diffstat pci-write-2610rc2mm3.diff 
 pci-vdk.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff -uNr /warthog/kernels/linux-2.6.10-rc2-mm3/arch/frv/mb93090-mb00/pci-vdk.c linux-2.6.10-rc2-mm3-frv/arch/frv/mb93090-mb00/pci-vdk.c
--- /warthog/kernels/linux-2.6.10-rc2-mm3/arch/frv/mb93090-mb00/pci-vdk.c	2004-11-22 10:53:41.000000000 +0000
+++ linux-2.6.10-rc2-mm3-frv/arch/frv/mb93090-mb00/pci-vdk.c	2004-11-22 11:45:09.905240995 +0000
@@ -44,9 +44,14 @@
 #define __get_PciCfgDataW(A) readw((volatile void __iomem *) __region_CS1 + 0x88 + ((A) & 2))
 #define __get_PciCfgDataL(A) readl((volatile void __iomem *) __region_CS1 + 0x88)
 
-#define __set_PciCfgDataB(A,V) writeb((V), (volatile void __iomem *) __region_CS1 + 0x88 + ((A) & 3))
-#define __set_PciCfgDataW(A,V) writew((V), (volatile void __iomem *) __region_CS1 + 0x88 + ((A) & 2))
-#define __set_PciCfgDataL(A,V) writel((V), (volatile void __iomem *) __region_CS1 + 0x88)
+#define __set_PciCfgDataB(A,V) \
+	writeb((V), (volatile void __iomem *) __region_CS1 + 0x88 + (3 - ((A) & 3)))
+
+#define __set_PciCfgDataW(A,V) \
+	writew((V), (volatile void __iomem *) __region_CS1 + 0x88 + (2 - ((A) & 2)))
+
+#define __set_PciCfgDataL(A,V) \
+	writel((V), (volatile void __iomem *) __region_CS1 + 0x88)
 
 #define __get_PciBridgeDataB(A) readb((volatile void __iomem *) __region_CS1 + 0x800 + (A))
 #define __get_PciBridgeDataW(A) readw((volatile void __iomem *) __region_CS1 + 0x800 + (A))
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/