Add EP93xx ethernet driver

Added ethernet driver for EP93xx SoCs
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

drivers/net/Makefile

@@ -37,6 +37,7 @@ COBJS-$(CONFIG_DNET) += dnet.o
 COBJS-$(CONFIG_E1000) += e1000.o
 COBJS-$(CONFIG_EEPRO100) += eepro100.o
 COBJS-$(CONFIG_ENC28J60) += enc28j60.o
+COBJS-$(CONFIG_EP93XX) += ep93xx_eth.o
 COBJS-$(CONFIG_FEC_MXC) += fec_mxc.o
 COBJS-$(CONFIG_FSLDMAFEC) += fsl_mcdmafec.o mcfmii.o
 COBJS-$(CONFIG_FTMAC100) += ftmac100.o

drivers/net/ep93xx_eth.h

+/*
+ * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
+ *
+ * Copyright (C) 2004, 2005
+ * Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef _EP93XX_ETH_H
+#define _EP93XX_ETH_H
+
+#include <net.h>
+
+/**
+ * #define this to dump device status and queue info during initialization and
+ * following errors.
+ */
+#undef EP93XX_MAC_DEBUG
+
+/**
+ * Number of descriptor and status entries in our RX queues.
+ * It must be power of 2 !
+ */
+#define NUMRXDESC		PKTBUFSRX
+
+/**
+ * Number of descriptor and status entries in our TX queues.
+ */
+#define NUMTXDESC		1
+
+/**
+ * 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT)
+ */
+#define TXSTARTMAX		944
+
+/**
+ * Receive descriptor queue entry
+ */
+struct rx_descriptor {
+	uint32_t word1;
+	uint32_t word2;
+};
+
+/**
+ * Receive status queue entry
+ */
+struct rx_status {
+	uint32_t word1;
+	uint32_t word2;
+};
+
+#define RX_STATUS_RWE(rx_status) ((rx_status->word1 >> 30) & 0x01)
+#define RX_STATUS_RFP(rx_status) ((rx_status->word1 >> 31) & 0x01)
+#define RX_STATUS_FRAME_LEN(rx_status) (rx_status->word2 & 0xFFFF)
+
+/**
+ * Transmit descriptor queue entry
+ */
+struct tx_descriptor {
+	uint32_t word1;
+	uint32_t word2;
+};
+
+#define TX_DESC_EOF (1 << 31)
+
+/**
+ * Transmit status queue entry
+ */
+struct tx_status {
+	uint32_t word1;
+};
+
+#define TX_STATUS_TXWE(tx_status) (((tx_status)->word1 >> 30) & 0x01)
+#define TX_STATUS_TXFP(tx_status) (((tx_status)->word1 >> 31) & 0x01)
+
+/**
+ * Transmit descriptor queue
+ */
+struct tx_descriptor_queue {
+	struct tx_descriptor *base;
+	struct tx_descriptor *current;
+	struct tx_descriptor *end;
+};
+
+/**
+ * Transmit status queue
+ */
+struct tx_status_queue {
+	struct tx_status *base;
+	volatile struct tx_status *current;
+	struct tx_status *end;
+};
+
+/**
+ * Receive descriptor queue
+ */
+struct rx_descriptor_queue {
+	struct rx_descriptor *base;
+	struct rx_descriptor *current;
+	struct rx_descriptor *end;
+};
+
+/**
+ * Receive status queue
+ */
+struct rx_status_queue {
+	struct rx_status *base;
+	volatile struct rx_status *current;
+	struct rx_status *end;
+};
+
+/**
+ * EP93xx MAC private data structure
+ */
+struct ep93xx_priv {
+	struct rx_descriptor_queue	rx_dq;
+	struct rx_status_queue		rx_sq;
+	void				*rx_buffer[NUMRXDESC];
+
+	struct tx_descriptor_queue	tx_dq;
+	struct tx_status_queue		tx_sq;
+
+	struct mac_regs			*regs;
+};
+
+#endif

include/common.h

@@ -123,6 +123,11 @@ typedef volatile unsigned char	vu_char;
 #define debugX(level,fmt,args...)
 #endif	/* DEBUG */
 
+#define error(fmt, args...) do {					\
+		printf("ERROR: " fmt "\nat %s:%d/%s()\n",		\
+			##args, __FILE__, __LINE__, __func__);		\
+} while (0)
+
 #ifndef BUG
 #define BUG() do { \
 	printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \

include/netdev.h

@@ -49,6 +49,7 @@ int davinci_emac_initialize(void);
 int dnet_eth_initialize(int id, void *regs, unsigned int phy_addr);
 int e1000_initialize(bd_t *bis);
 int eepro100_initialize(bd_t *bis);
+int ep93xx_eth_initialize(u8 dev_num, int base_addr);
 int eth_3com_initialize (bd_t * bis);
 int fec_initialize (bd_t *bis);
 int fecmxc_initialize (bd_t *bis);