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yaml --- r: 22353 b: refs/heads/master c: 6f059c3 h: refs/heads/master i: 22351: 03fa3f9 v: v3
git-mirror · Mar 21, 2006 · 06a6470 · 06a6470
1 parent 4f53037
commit 06a6470
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Showing 2 changed files with 15 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9362860fd1d9062ff9b3dca42aa3e1e68c2ddb67
+refs/heads/master: 6f059c3e9042bc4eaa4f7a8dd651bbed9be144f2
diff --git a/trunk/drivers/net/mv643xx_eth.h b/trunk/drivers/net/mv643xx_eth.h
@@ -42,13 +42,23 @@
 #define MAX_DESCS_PER_SKB	1
 #endif
 
+/*
+ * The MV643XX HW requires 8-byte alignment.  However, when I/O
+ * is non-cache-coherent, we need to ensure that the I/O buffers
+ * we use don't share cache lines with other data.
+ */
+#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_NOT_COHERENT_CACHE)
+#define ETH_DMA_ALIGN		L1_CACHE_BYTES
+#else
+#define ETH_DMA_ALIGN		8
+#endif
+
 #define ETH_VLAN_HLEN		4
 #define ETH_FCS_LEN		4
-#define ETH_DMA_ALIGN		8	/* hw requires 8-byte alignment */
-#define ETH_HW_IP_ALIGN		2	/* hw aligns IP header */
+#define ETH_HW_IP_ALIGN		2		/* hw aligns IP header */
 #define ETH_WRAPPER_LEN		(ETH_HW_IP_ALIGN + ETH_HLEN + \
-				ETH_VLAN_HLEN + ETH_FCS_LEN)
-#define ETH_RX_SKB_SIZE		((dev->mtu + ETH_WRAPPER_LEN + 7) & ~0x7)
+					ETH_VLAN_HLEN + ETH_FCS_LEN)
+#define ETH_RX_SKB_SIZE		(dev->mtu + ETH_WRAPPER_LEN + ETH_DMA_ALIGN)
 
 #define ETH_RX_QUEUES_ENABLED	(1 << 0)	/* use only Q0 for receive */
 #define ETH_TX_QUEUES_ENABLED	(1 << 0)	/* use only Q0 for transmit */