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-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar8216.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar8216.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar8216.c
new file mode 100644
index 000000000..39221ad62
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ar8216.c
@@ -0,0 +1,53 @@
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ * Special support for the Atheros ar8216 switch chip
+ *
+ * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * Based on Atheros' AG7100 driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ag71xx.h"
+
+#define AR8216_PACKET_TYPE_MASK 0xf
+#define AR8216_PACKET_TYPE_NORMAL 0
+
+#define AR8216_HEADER_LEN 2
+
+void ag71xx_add_ar8216_header(struct ag71xx *ag, struct sk_buff *skb)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ if (!pdata->has_ar8216)
+ return;
+
+ skb_push(skb, AR8216_HEADER_LEN);
+ skb->data[0] = 0x10;
+ skb->data[1] = 0x80;
+}
+
+int ag71xx_remove_ar8216_header(struct ag71xx *ag,
+ struct sk_buff *skb)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ u8 type;
+
+ if (!pdata->has_ar8216)
+ return 0;
+
+ type = skb->data[1] & AR8216_PACKET_TYPE_MASK;
+
+ switch (type) {
+ case AR8216_PACKET_TYPE_NORMAL:
+ skb_pull(skb, AR8216_HEADER_LEN);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}