netdev - [PATCH 3/8] [MV643XX_ETH] Disable RX/TX byte swapping on little-endian systems

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Date:	Fri, 19 Oct 2007 04:10:28 +0200
From:	Lennert Buytenhek <buytenh@...tstofly.org>
To:	Dale Farnsworth <dale@...nsworth.org>
Cc:	Nicolas Pitre <nico@...vell.com>,
	Tzachi Perelstein <tzachi@...vell.com>,
	Manas Saksena <msaksena@...vell.com>, netdev@...r.kernel.org
Subject: [PATCH 3/8] [MV643XX_ETH] Disable RX/TX byte swapping on little-endian systems

On little-endian systems, configure the SDMA unit with
MV643XX_ETH_BLM_RX_NO_SWAP and MV643XX_ETH_BLM_TX_NO_SWAP.

Signed-off-by: Lennert Buytenhek <buytenh@...vell.com>
Acked-by: Tzachi Perelstein <tzachi@...vell.com>

Index: linux-2.6/drivers/net/mv643xx_eth.h
===================================================================
--- linux-2.6.orig/drivers/net/mv643xx_eth.h
+++ linux-2.6/drivers/net/mv643xx_eth.h
@@ -266,10 +266,21 @@
 
 #define	MV643XX_ETH_IPG_INT_RX(value) ((value & 0x3fff) << 8)
 
+#if defined(__BIG_ENDIAN)
 #define	MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE		\
 		MV643XX_ETH_RX_BURST_SIZE_4_64BIT	|	\
 		MV643XX_ETH_IPG_INT_RX(0)		|	\
 		MV643XX_ETH_TX_BURST_SIZE_4_64BIT
+#elif defined(__LITTLE_ENDIAN)
+#define	MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE		\
+		MV643XX_ETH_RX_BURST_SIZE_4_64BIT	|	\
+		MV643XX_ETH_BLM_RX_NO_SWAP		|	\
+		MV643XX_ETH_BLM_TX_NO_SWAP		|	\
+		MV643XX_ETH_IPG_INT_RX(0)		|	\
+		MV643XX_ETH_TX_BURST_SIZE_4_64BIT
+#else
+#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
+#endif
 
 /* These macros describe Ethernet Port serial control reg (PSCR) bits */
 #define MV643XX_ETH_SERIAL_PORT_DISABLE			0
-
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