net: sh: Renesas SH7763 Ethernet device support

Renesas SH7763 has 2 channel Ethernet device.
This is 10/100/1000 Base support.
But this patch check 10/100 Base only.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

3 files changed, 1050 insertions, 0 deletions

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 84be288756..bcf31cbe27 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -66,6 +66,7 @@ COBJS-$(CONFIG_ULI526X) += uli526x.o
 COBJS-$(CONFIG_VSC7385_ENET) += vsc7385.o
 COBJS-$(CONFIG_XILINX_EMAC) += xilinx_emac.o
 COBJS-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o
+COBJS-$(CONFIG_SH_ETHER) += sh_eth.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
new file mode 100644
index 0000000000..9e3cf98b3b
--- /dev/null
+++ b/drivers/net/sh_eth.c
@@ -0,0 +1,603 @@
+/*
+ * sh_eth.c - Driver for Renesas SH7763's ethernet controler.
+ *
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ * Copyright (c) 2008 Nobuhiro Iwamatsu
+ * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <malloc.h>
+#include <net.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+
+#include "sh_eth.h"
+
+#ifndef CONFIG_SH_ETHER_USE_PORT
+# error "Please define CONFIG_SH_ETHER_USE_PORT"
+#endif
+#ifndef CONFIG_SH_ETHER_PHY_ADDR
+# error "Please define CONFIG_SH_ETHER_PHY_ADDR"
+#endif
+
+extern int eth_init(bd_t *bd);
+extern void eth_halt(void);
+extern int eth_rx(void);
+extern int eth_send(volatile void *packet, int length);
+
+static struct dev_info_s *dev;
+
+/*
+ * Bits are written to the PHY serially using the
+ * PIR register, just like a bit banger.
+ */
+static void sh_eth_mii_write_phy_bits(int port, u32 val, int len)
+{
+	int i;
+	u32 pir;
+
+	/* Bit positions is 1 less than the number of bits */
+	for (i = len - 1; i >= 0; i--) {
+		/* Write direction, bit to write, clock is low */
+		pir = 2 | ((val & 1 << i) ? 1 << 2 : 0);
+		outl(pir, PIR(port));
+		udelay(1);
+		/* Write direction, bit to write, clock is high */
+		pir = 3 | ((val & 1 << i) ? 1 << 2 : 0);
+		outl(pir, PIR(port));
+		udelay(1);
+		/* Write direction, bit to write, clock is low */
+		pir = 2 | ((val & 1 << i) ? 1 << 2 : 0);
+		outl(pir, PIR(port));
+		udelay(1);
+	}
+}
+
+static void sh_eth_mii_bus_release(int port)
+{
+	/* Read direction, clock is low */
+	outl(0, PIR(port));
+	udelay(1);
+	/* Read direction, clock is high */
+	outl(1, PIR(port));
+	udelay(1);
+	/* Read direction, clock is low */
+	outl(0, PIR(port));
+	udelay(1);
+}
+
+static void sh_eth_mii_ind_bus_release(int port)
+{
+	/* Read direction, clock is low */
+	outl(0, PIR(port));
+	udelay(1);
+}
+
+static int sh_eth_mii_read_phy_bits(int port, u32 * val, int len)
+{
+	int i;
+	u32 pir;
+
+	*val = 0;
+	for (i = len - 1; i >= 0; i--) {
+		/* Read direction, clock is high */
+		outl(1, PIR(port));
+		udelay(1);
+		/* Read bit */
+		pir = inl(PIR(port));
+		*val |= (pir & 8) ? 1 << i : 0;
+		/* Read direction, clock is low */
+		outl(0, PIR(port));
+		udelay(1);
+	}
+
+	return 0;
+}
+
+#define PHY_INIT	0xFFFFFFFF
+#define PHY_READ	0x02
+#define PHY_WRITE	0x01
+/*
+ * To read a phy register, mii managements frames are sent to the phy.
+ * The frames look like this:
+ * pre (32 bits):	0xffff ffff
+ * st (2 bits):		01
+ * op (2bits):		10: read 01: write
+ * phyad (5 bits):	xxxxx
+ * regad (5 bits):	xxxxx
+ * ta (Bus release):
+ * data (16 bits):	read data
+ */
+static u32 sh_eth_mii_read_phy_reg(int port, u8 phy_addr, int reg)
+{
+	u32 val;
+
+	/* Sent mii management frame */
+	/* pre */
+	sh_eth_mii_write_phy_bits(port, PHY_INIT, 32);
+	/* st (start of frame) */
+	sh_eth_mii_write_phy_bits(port, 0x1, 2);
+	/* op (code) */
+	sh_eth_mii_write_phy_bits(port, PHY_READ, 2);
+	/* phy address */
+	sh_eth_mii_write_phy_bits(port, phy_addr, 5);
+	/* Register to read */
+	sh_eth_mii_write_phy_bits(port, reg, 5);
+
+	/* Bus release */
+	sh_eth_mii_bus_release(port);
+
+	/* Read register */
+	sh_eth_mii_read_phy_bits(port, &val, 16);
+
+	return val;
+}
+
+/*
+ * To write a phy register, mii managements frames are sent to the phy.
+ * The frames look like this:
+ * pre (32 bits):	0xffff ffff
+ * st (2 bits):		01
+ * op (2bits):		10: read 01: write
+ * phyad (5 bits):	xxxxx
+ * regad (5 bits):	xxxxx
+ * ta (2 bits):		10
+ * data (16 bits):	write data
+ * idle (Independent bus release)
+ */
+static void sh_eth_mii_write_phy_reg(int port, u8 phy_addr, int reg, u16 val)
+{
+	/* Sent mii management frame */
+	/* pre */
+	sh_eth_mii_write_phy_bits(port, PHY_INIT, 32);
+	/* st (start of frame) */
+	sh_eth_mii_write_phy_bits(port, 0x1, 2);
+	/* op (code) */
+	sh_eth_mii_write_phy_bits(port, PHY_WRITE, 2);
+	/* phy address */
+	sh_eth_mii_write_phy_bits(port, phy_addr, 5);
+	/* Register to read */
+	sh_eth_mii_write_phy_bits(port, reg, 5);
+	/* ta */
+	sh_eth_mii_write_phy_bits(port, PHY_READ, 2);
+	/* Write register data */
+	sh_eth_mii_write_phy_bits(port, val, 16);
+
+	/* Independent bus release */
+	sh_eth_mii_ind_bus_release(port);
+}
+
+void eth_halt(void)
+{
+}
+
+int eth_send(volatile void *packet, int len)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+	int timeout;
+	int rc = 0;
+
+	if (!packet || len > 0xffff) {
+		printf("eth_send: Invalid argument\n");
+		return -EINVAL;
+	}
+
+	/* packet must be a 4 byte boundary */
+	if ((int)packet & (4 - 1)) {
+		printf("eth_send: packet not 4 byte alligned\n");
+		return -EFAULT;
+	}
+
+	/* Update tx descriptor */
+	port_info->tx_desc_cur->td2 = ADDR_TO_PHY(packet);
+	port_info->tx_desc_cur->td1 = len << 16;
+	/* Must preserve the end of descriptor list indication */
+	if (port_info->tx_desc_cur->td0 & TD_TDLE)
+		port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP | TD_TDLE;
+	else
+		port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP;
+
+	/* Restart the transmitter if disabled */
+	if (!(inl(EDTRR(port)) & EDTRR_TRNS))
+		outl(EDTRR_TRNS, EDTRR(port));
+
+	/* Wait until packet is transmitted */
+	timeout = 1000;
+	while (port_info->tx_desc_cur->td0 & TD_TACT && timeout--)
+		udelay(100);
+
+	if (timeout < 0) {
+		printf("eth_send: transmit timeout\n");
+		rc = -1;
+		goto err;
+	}
+
+err:
+	port_info->tx_desc_cur++;
+	if (port_info->tx_desc_cur >= port_info->tx_desc_base + NUM_TX_DESC)
+		port_info->tx_desc_cur = port_info->tx_desc_base;
+
+	return rc;
+}
+
+int eth_rx(void)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+	int len = 0;
+	volatile u8 *packet;
+
+	/* Check if the rx descriptor is ready */
+	if (!(port_info->rx_desc_cur->rd0 & RD_RACT)) {
+		/* Check for errors */
+		if (!(port_info->rx_desc_cur->rd0 & RD_RFE)) {
+			len = port_info->rx_desc_cur->rd1 & 0xffff;
+			packet = (volatile u8 *)
+			    ADDR_TO_P2(port_info->rx_desc_cur->rd2);
+			NetReceive(packet, len);
+		}
+
+		/* Make current descriptor available again */
+		if (port_info->rx_desc_cur->rd0 & RD_RDLE)
+			port_info->rx_desc_cur->rd0 = RD_RACT | RD_RDLE;
+		else
+			port_info->rx_desc_cur->rd0 = RD_RACT;
+
+		/* Point to the next descriptor */
+		port_info->rx_desc_cur++;
+		if (port_info->rx_desc_cur >=
+		    port_info->rx_desc_base + NUM_RX_DESC)
+			port_info->rx_desc_cur = port_info->rx_desc_base;
+	}
+
+	/* Restart the receiver if disabled */
+	if (!(inl(EDRRR(port)) & EDRRR_R))
+		outl(EDRRR_R, EDRRR(port));
+
+	return len;
+}
+
+#define EDMR_INIT_CNT 1000
+static int sh_eth_reset(struct dev_info_s *dev)
+{
+	int port = dev->port;
+	int i;
+
+	/* Start e-dmac transmitter and receiver */
+	outl(EDSR_ENALL, EDSR(port));
+
+	/* Perform a software reset and wait for it to complete */
+	outl(EDMR_SRST, EDMR(port));
+	for (i = 0; i < EDMR_INIT_CNT; i++) {
+		if (!(inl(EDMR(port)) & EDMR_SRST))
+			break;
+		udelay(1000);
+	}
+
+	if (i == EDMR_INIT_CNT) {
+		printf("Error: Software reset timeout\n");
+		return -1;
+	}
+	return 0;
+}
+
+static int sh_eth_tx_desc_init(struct dev_info_s *dev)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+	u32 tmp_addr;
+	struct tx_desc_s *cur_tx_desc;
+	int i;
+
+	/* Allocate tx descriptors. They must be TX_DESC_SIZE bytes
+	   aligned */
+	if (!(port_info->tx_desc_malloc = malloc(NUM_TX_DESC *
+						 sizeof(struct tx_desc_s) +
+						 TX_DESC_SIZE - 1))) {
+		printf("Error: malloc failed\n");
+		return -ENOMEM;
+	}
+	tmp_addr = (u32) (((int)port_info->tx_desc_malloc + TX_DESC_SIZE - 1) &
+			  ~(TX_DESC_SIZE - 1));
+	/* Make sure we use a P2 address (non-cacheable) */
+	port_info->tx_desc_base = (struct tx_desc_s *)ADDR_TO_P2(tmp_addr);
+
+	port_info->tx_desc_cur = port_info->tx_desc_base;
+
+	/* Initialize all descriptors */
+	for (cur_tx_desc = port_info->tx_desc_base, i = 0; i < NUM_TX_DESC;
+	     cur_tx_desc++, i++) {
+		cur_tx_desc->td0 = 0x00;
+		cur_tx_desc->td1 = 0x00;
+		cur_tx_desc->td2 = 0x00;
+	}
+
+	/* Mark the end of the descriptors */
+	cur_tx_desc--;
+	cur_tx_desc->td0 |= TD_TDLE;
+
+	/* Point the controller to the tx descriptor list. Must use physical
+	   addresses */
+	outl(ADDR_TO_PHY(port_info->tx_desc_base), TDLAR(port));
+	outl(ADDR_TO_PHY(port_info->tx_desc_base), TDFAR(port));
+	outl(ADDR_TO_PHY(cur_tx_desc), TDFXR(port));
+	outl(0x01, TDFFR(port));/* Last discriptor bit */
+
+	return 0;
+}
+
+static int sh_eth_rx_desc_init(struct dev_info_s *dev)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+	u32 tmp_addr;
+	struct rx_desc_s *cur_rx_desc;
+	u8 *rx_buf;
+	int i;
+
+	/* Allocate rx descriptors. They must be RX_DESC_SIZE bytes
+	   aligned */
+	if (!(port_info->rx_desc_malloc = malloc(NUM_RX_DESC *
+						 sizeof(struct rx_desc_s) +
+						 RX_DESC_SIZE - 1))) {
+		printf("Error: malloc failed\n");
+		return -ENOMEM;
+	}
+	tmp_addr = (u32) (((int)port_info->rx_desc_malloc + RX_DESC_SIZE - 1) &
+			  ~(RX_DESC_SIZE - 1));
+	/* Make sure we use a P2 address (non-cacheable) */
+	port_info->rx_desc_base = (struct rx_desc_s *)ADDR_TO_P2(tmp_addr);
+
+	port_info->rx_desc_cur = port_info->rx_desc_base;
+
+	/* Allocate rx data buffers. They must be 32 bytes aligned  and in
+	   P2 area */
+	if (!(port_info->rx_buf_malloc = malloc(NUM_RX_DESC * MAX_BUF_SIZE +
+						31))) {
+		printf("Error: malloc failed\n");
+		free(port_info->rx_desc_malloc);
+		port_info->rx_desc_malloc = NULL;
+		return -ENOMEM;
+	}
+	tmp_addr = (u32)(((int)port_info->rx_buf_malloc + (32 - 1)) &
+			  ~(32 - 1));
+	port_info->rx_buf_base = (u8 *)ADDR_TO_P2(tmp_addr);
+
+	/* Initialize all descriptors */
+	for (cur_rx_desc = port_info->rx_desc_base,
+	     rx_buf = port_info->rx_buf_base, i = 0;
+	     i < NUM_RX_DESC; cur_rx_desc++, rx_buf += MAX_BUF_SIZE, i++) {
+		cur_rx_desc->rd0 = RD_RACT;
+		cur_rx_desc->rd1 = MAX_BUF_SIZE << 16;
+		cur_rx_desc->rd2 = (u32) ADDR_TO_PHY(rx_buf);
+	}
+
+	/* Mark the end of the descriptors */
+	cur_rx_desc--;
+	cur_rx_desc->rd0 |= RD_RDLE;
+
+	/* Point the controller to the rx descriptor list */
+	outl(ADDR_TO_PHY(port_info->rx_desc_base), RDLAR(port));
+	outl(ADDR_TO_PHY(port_info->rx_desc_base), RDFAR(port));
+	outl(ADDR_TO_PHY(cur_rx_desc), RDFXR(port));
+	outl(RDFFR_RDLF, RDFFR(port));
+
+	return 0;
+}
+
+static void sh_eth_desc_free(struct dev_info_s *dev)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+
+	if (port_info->tx_desc_malloc) {
+		free(port_info->tx_desc_malloc);
+		port_info->tx_desc_malloc = NULL;
+	}
+
+	if (port_info->rx_desc_malloc) {
+		free(port_info->rx_desc_malloc);
+		port_info->rx_desc_malloc = NULL;
+	}
+
+	if (port_info->rx_buf_malloc) {
+		free(port_info->rx_buf_malloc);
+		port_info->rx_buf_malloc = NULL;
+	}
+}
+
+static int sh_eth_desc_init(struct dev_info_s *dev)
+{
+	int rc;
+
+	if ((rc = sh_eth_tx_desc_init(dev)) || (rc = sh_eth_rx_desc_init(dev))) {
+		sh_eth_desc_free(dev);
+		return rc;
+	}
+
+	return 0;
+}
+
+static int sh_eth_phy_config(struct dev_info_s *dev)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+	int timeout;
+	u32 val;
+	/* Reset phy */
+	sh_eth_mii_write_phy_reg(port, port_info->phy_addr, PHY_CTRL, PHY_C_RESET);
+	timeout = 10;
+	while (timeout--) {
+		val = sh_eth_mii_read_phy_reg(port, port_info->phy_addr, PHY_CTRL);
+		if (!(val & PHY_C_RESET))
+			break;
+		udelay(50000);
+	}
+	if (timeout < 0) {
+		printf("%s phy reset timeout\n", __func__);
+		return -1;
+	}
+
+	/* Advertise 100/10 baseT full/half duplex */
+	sh_eth_mii_write_phy_reg(port, port_info->phy_addr, PHY_ANA,
+		(PHY_A_FDX|PHY_A_HDX|PHY_A_10FDX|PHY_A_10HDX|PHY_A_EXT));
+	/* Autonegotiation, normal operation, full duplex, enable tx */
+	sh_eth_mii_write_phy_reg(port, port_info->phy_addr, PHY_CTRL,
+		(PHY_C_ANEGEN|PHY_C_RANEG));
+	/* Wait for autonegotiation to complete */
+	timeout = 100;
+	while (timeout--) {
+		val = sh_eth_mii_read_phy_reg(port, port_info->phy_addr, 1);
+		if (val & PHY_S_ANEGC)
+			break;
+		udelay(50000);
+	}
+	if (timeout < 0) {
+		printf("sh_eth_phy_config() phy auto-negotiation failed\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int sh_eth_config(struct dev_info_s *dev, bd_t * bd)
+{
+	int port = dev->port;
+	struct port_info_s *port_info = &dev->port_info[port];
+	u32 val;
+	u32 phy_status;
+	int rc;
+
+	/* Configure e-dmac registers */
+	outl((inl(EDMR(port)) & ~EMDR_DESC_R) | EDMR_EL, EDMR(port));
+	outl(0, EESIPR(port));
+	outl(0, TRSCER(port));
+	outl(0, TFTR(port));
+	outl((FIFO_SIZE_T | FIFO_SIZE_R), FDR(port));
+	outl(RMCR_RST, RMCR(port));
+	outl(0, RPADIR(port));
+	outl((FIFO_F_D_RFF | FIFO_F_D_RFD), FCFTR(port));
+
+	/* Configure e-mac registers */
+	outl(0, ECSIPR(port));
+
+	/* Set Mac address */
+	val = bd->bi_enetaddr[0] << 24 | bd->bi_enetaddr[1] << 16 |
+	    bd->bi_enetaddr[2] << 8 | bd->bi_enetaddr[3];
+	outl(val, MAHR(port));
+
+	val = bd->bi_enetaddr[4] << 8 | bd->bi_enetaddr[5];
+	outl(val, MALR(port));
+
+	outl(RFLR_RFL_MIN, RFLR(port));
+	outl(0, PIPR(port));
+	outl(APR_AP, APR(port));
+	outl(MPR_MP, MPR(port));
+	outl(TPAUSER_TPAUSE, TPAUSER(port));
+
+	/* Configure phy */
+	if ((rc = sh_eth_phy_config(dev)))
+		return rc;
+
+	/* Read phy status to finish configuring the e-mac */
+	phy_status = sh_eth_mii_read_phy_reg(dev->port,
+					     dev->port_info[dev->port].phy_addr,
+					     1);
+
+	/* Set the transfer speed */
+	if (phy_status & (PHY_S_100X_F|PHY_S_100X_H)) {
+		printf("100Base/");
+		outl(GECMR_100B, GECMR(port));
+	} else {
+		printf("10Base/");
+		outl(GECMR_10B, GECMR(port));
+	}
+
+	/* Check if full duplex mode is supported by the phy */
+	if (phy_status & (PHY_S_100X_F|PHY_S_10T_F)) {
+		printf("Full\n");
+		outl((ECMR_CHG_DM|ECMR_RE|ECMR_TE|ECMR_DM), ECMR(port));
+	} else {
+		printf("Half\n");
+		outl((ECMR_CHG_DM|ECMR_RE|ECMR_TE),  ECMR(port));
+	}
+	return 0;
+}
+
+static int sh_eth_start(struct dev_info_s *dev)
+{
+	/*
+	 * Enable the e-dmac receiver only. The transmitter will be enabled when
+	 * we have something to transmit
+	 */
+	outl(EDRRR_R, EDRRR(dev->port));
+
+	return 0;
+}
+
+static int sh_eth_get_mac(bd_t *bd)
+{
+	char *s, *e;
+	int i;
+
+	s = getenv("ethaddr");
+	if (s != NULL) {
+		for (i = 0; i < 6; ++i) {
+			bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
+			if (s)
+				s = (*e) ? e + 1 : e;
+		}
+	} else {
+		puts("Please set MAC address\n");
+	}
+	return 0;
+}
+
+int eth_init(bd_t *bd)
+{
+	int rc;
+	/* Allocate main device information structure */
+	if (!(dev = malloc(sizeof(*dev)))) {
+		printf("eth_init: malloc failed\n");
+		return -ENOMEM;
+	}
+
+	memset(dev, 0, sizeof(*dev));
+
+	dev->port = CONFIG_SH_ETHER_USE_PORT;
+	dev->port_info[dev->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
+
+	sh_eth_get_mac(bd);
+
+	if ((rc = sh_eth_reset(dev)) || (rc = sh_eth_desc_init(dev)))
+		goto err;
+
+	if ((rc = sh_eth_config(dev, bd)) || (rc = sh_eth_start(dev)))
+		goto err_desc;
+
+	return 0;
+
+err_desc:
+	sh_eth_desc_free(dev);
+err:
+	free(dev);
+	printf("eth_init: Failed\n");
+	return rc;
+}
diff --git a/drivers/net/sh_eth.h b/drivers/net/sh_eth.h
new file mode 100644
index 0000000000..9cf0ea0b9e
--- /dev/null
+++ b/drivers/net/sh_eth.h
@@ -0,0 +1,446 @@
+/*
+ * sh_eth.h - Driver for Renesas SH7763's gigabit ethernet controler.
+ *
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ * Copyright (c) 2008 Nobuhiro Iwamatsu
+ * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/types.h>
+
+#define SHETHER_NAME "sh_eth"
+
+/* Malloc returns addresses in the P1 area (cacheable). However we need to
+   use area P2 (non-cacheable) */
+#define ADDR_TO_P2(addr)	((((int)(addr) & ~0xe0000000) | 0xa0000000))
+
+/* The ethernet controller needs to use physical addresses */
+#define ADDR_TO_PHY(addr)	((int)(addr) & ~0xe0000000)
+
+/* Number of supported ports */
+#define MAX_PORT_NUM	2
+
+/* Buffers must be big enough to hold the largest ethernet frame. Also, rx
+   buffers must be a multiple of 32 bytes */
+#define MAX_BUF_SIZE	(48 * 32)
+
+/* The number of tx descriptors must be large enough to point to 5 or more
+   frames. If each frame uses 2 descriptors, at least 10 descriptors are needed.
+   We use one descriptor per frame */
+#define NUM_TX_DESC		8
+
+/* The size of the tx descriptor is determined by how much padding is used.
+   4, 20, or 52 bytes of padding can be used */
+#define TX_DESC_PADDING		4
+#define TX_DESC_SIZE		(12 + TX_DESC_PADDING)
+
+/* Tx descriptor. We always use 4 bytes of padding */
+struct tx_desc_s {
+	volatile u32 td0;
+	u32 td1;
+	u32 td2;		/* Buffer start */
+	u32 padding;
+};
+
+/* There is no limitation in the number of rx descriptors */
+#define NUM_RX_DESC	8
+
+/* The size of the rx descriptor is determined by how much padding is used.
+   4, 20, or 52 bytes of padding can be used */
+#define RX_DESC_PADDING		4
+#define RX_DESC_SIZE		(12 + RX_DESC_PADDING)
+
+/* Rx descriptor. We always use 4 bytes of padding */
+struct rx_desc_s {
+	volatile u32 rd0;
+	volatile u32 rd1;
+	u32 rd2;		/* Buffer start */
+	u32 padding;
+};
+
+struct port_info_s {
+	struct tx_desc_s *tx_desc_malloc;
+	struct tx_desc_s *tx_desc_base;
+	struct tx_desc_s *tx_desc_cur;
+	struct rx_desc_s *rx_desc_malloc;
+	struct rx_desc_s *rx_desc_base;
+	struct rx_desc_s *rx_desc_cur;
+	u8 *rx_buf_malloc;
+	u8 *rx_buf_base;
+	u8 mac_addr[6];
+	u8 phy_addr;
+};
+
+struct dev_info_s {
+	int port;
+	struct port_info_s port_info[MAX_PORT_NUM];
+};
+
+/* Register Address */
+#define BASE_IO_ADDR	0xfee00000
+
+#define EDSR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0000)
+
+#define TDLAR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0010)
+#define TDFAR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0014)
+#define TDFXR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0018)
+#define TDFFR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x001c)
+
+#define RDLAR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0030)
+#define RDFAR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0034)
+#define RDFXR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0038)
+#define RDFFR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x003c)
+
+#define EDMR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0400)
+#define EDTRR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0408)
+#define EDRRR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0410)
+#define EESR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0428)
+#define EESIPR(port)	(BASE_IO_ADDR + 0x800 * (port) + 0x0430)
+#define TRSCER(port)	(BASE_IO_ADDR + 0x800 * (port) + 0x0438)
+#define TFTR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0448)
+#define FDR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0450)
+#define RMCR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0458)
+#define RPADIR(port)	(BASE_IO_ADDR + 0x800 * (port) + 0x0460)
+#define FCFTR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0468)
+#define ECMR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0500)
+#define RFLR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0508)
+#define ECSIPR(port)	(BASE_IO_ADDR + 0x800 * (port) + 0x0518)
+#define PIR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0520)
+#define PIPR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x052c)
+#define APR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0554)
+#define MPR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x0558)
+#define TPAUSER(port)	(BASE_IO_ADDR + 0x800 * (port) + 0x0564)
+#define GECMR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x05b0)
+#define MALR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x05c8)
+#define MAHR(port)		(BASE_IO_ADDR + 0x800 * (port) + 0x05c0)
+
+/*
+ * Register's bits
+ * Copy from Linux driver source code
+ */
+#ifdef CONFIG_CPU_SH7763
+/* EDSR */
+enum EDSR_BIT {
+	EDSR_ENT = 0x01, EDSR_ENR = 0x02,
+};
+#define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
+#endif
+
+/* EDMR */
+enum DMAC_M_BIT {
+	EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
+#ifdef CONFIG_CPU_SH7763
+	EDMR_SRST	= 0x03,
+	EMDR_DESC_R	= 0x30, /* Descriptor reserve size */
+	EDMR_EL		= 0x40, /* Litte endian */
+#else /* CONFIG_CPU_SH7763 */
+	EDMR_SRST = 0x01,
+#endif
+};
+
+/* RFLR */
+#define RFLR_RFL_MIN	0x05EE	/* Recv Frame length 1518 byte */
+
+/* EDTRR */
+enum DMAC_T_BIT {
+#ifdef CONFIG_CPU_SH7763
+	EDTRR_TRNS = 0x03,
+#else
+	EDTRR_TRNS = 0x01,
+#endif
+};
+
+/* GECMR */
+enum GECMR_BIT {
+	GECMR_1000B = 0x01, GECMR_100B = 0x40, GECMR_10B = 0x00,
+};
+
+/* EDRRR*/
+enum EDRRR_R_BIT {
+	EDRRR_R = 0x01,
+};
+
+/* TPAUSER */
+enum TPAUSER_BIT {
+	TPAUSER_TPAUSE = 0x0000ffff,
+	TPAUSER_UNLIMITED = 0,
+};
+
+/* BCFR */
+enum BCFR_BIT {
+	BCFR_RPAUSE = 0x0000ffff,
+	BCFR_UNLIMITED = 0,
+};
+
+/* PIR */
+enum PIR_BIT {
+	PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
+};
+
+/* PSR */
+enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };
+
+/* EESR */
+enum EESR_BIT {
+#ifndef CONFIG_CPU_SH7763
+	EESR_TWB  = 0x40000000,
+#else
+	EESR_TWB  = 0xC0000000,
+	EESR_TC1  = 0x20000000,
+	EESR_TUC  = 0x10000000,
+	EESR_ROC  = 0x80000000,
+#endif
+	EESR_TABT = 0x04000000,
+	EESR_RABT = 0x02000000, EESR_RFRMER = 0x01000000,
+#ifndef CONFIG_CPU_SH7763
+	EESR_ADE  = 0x00800000,
+#endif
+	EESR_ECI  = 0x00400000,
+	EESR_FTC  = 0x00200000, EESR_TDE  = 0x00100000,
+	EESR_TFE  = 0x00080000, EESR_FRC  = 0x00040000,
+	EESR_RDE  = 0x00020000, EESR_RFE  = 0x00010000,
+#ifndef CONFIG_CPU_SH7763
+	EESR_CND  = 0x00000800,
+#endif
+	EESR_DLC  = 0x00000400,
+	EESR_CD   = 0x00000200, EESR_RTO  = 0x00000100,
+	EESR_RMAF = 0x00000080, EESR_CEEF = 0x00000040,
+	EESR_CELF = 0x00000020, EESR_RRF  = 0x00000010,
+	rESR_RTLF = 0x00000008, EESR_RTSF = 0x00000004,
+	EESR_PRE  = 0x00000002, EESR_CERF = 0x00000001,
+};
+
+
+#ifdef CONFIG_CPU_SH7763
+# define TX_CHECK (EESR_TC1 | EESR_FTC)
+# define EESR_ERR_CHECK	(EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE \
+		| EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI)
+# define TX_ERROR_CEHCK (EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE)
+
+#else
+# define TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO)
+# define EESR_ERR_CHECK	(EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE \
+		| EESR_RFRMER | EESR_ADE | EESR_TFE | EESR_TDE | EESR_ECI)
+# define TX_ERROR_CEHCK (EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE)
+#endif
+
+/* EESIPR */
+enum DMAC_IM_BIT {
+	DMAC_M_TWB = 0x40000000, DMAC_M_TABT = 0x04000000,
+	DMAC_M_RABT = 0x02000000,
+	DMAC_M_RFRMER = 0x01000000, DMAC_M_ADF = 0x00800000,
+	DMAC_M_ECI = 0x00400000, DMAC_M_FTC = 0x00200000,
+	DMAC_M_TDE = 0x00100000, DMAC_M_TFE = 0x00080000,
+	DMAC_M_FRC = 0x00040000, DMAC_M_RDE = 0x00020000,
+	DMAC_M_RFE = 0x00010000, DMAC_M_TINT4 = 0x00000800,
+	DMAC_M_TINT3 = 0x00000400, DMAC_M_TINT2 = 0x00000200,
+	DMAC_M_TINT1 = 0x00000100, DMAC_M_RINT8 = 0x00000080,
+	DMAC_M_RINT5 = 0x00000010, DMAC_M_RINT4 = 0x00000008,
+	DMAC_M_RINT3 = 0x00000004, DMAC_M_RINT2 = 0x00000002,
+	DMAC_M_RINT1 = 0x00000001,
+};
+
+/* Receive descriptor bit */
+enum RD_STS_BIT {
+	RD_RACT = 0x80000000, RD_RDLE = 0x40000000,
+	RD_RFP1 = 0x20000000, RD_RFP0 = 0x10000000,
+	RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
+	RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
+	RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
+	RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
+	RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
+	RD_RFS1 = 0x00000001,
+};
+#define RDF1ST	RD_RFP1
+#define RDFEND	RD_RFP0
+#define RD_RFP	(RD_RFP1|RD_RFP0)
+
+/* RDFFR*/
+enum RDFFR_BIT {
+	RDFFR_RDLF = 0x01,
+};
+
+/* FCFTR */
+enum FCFTR_BIT {
+	FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
+	FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
+	FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
+};
+#define FIFO_F_D_RFF	(FCFTR_RFF2|FCFTR_RFF1|FCFTR_RFF0)
+#define FIFO_F_D_RFD	(FCFTR_RFD2|FCFTR_RFD1|FCFTR_RFD0)
+
+/* Transfer descriptor bit */
+enum TD_STS_BIT {
+#ifdef CONFIG_CPU_SH7763
+	TD_TACT = 0x80000000,
+#else
+	TD_TACT = 0x7fffffff,
+#endif
+	TD_TDLE = 0x40000000, TD_TFP1 = 0x20000000,
+	TD_TFP0 = 0x10000000,
+};
+#define TDF1ST	TD_TFP1
+#define TDFEND	TD_TFP0
+#define TD_TFP	(TD_TFP1|TD_TFP0)
+
+/* RMCR */
+enum RECV_RST_BIT { RMCR_RST = 0x01, };
+/* ECMR */
+enum FELIC_MODE_BIT {
+#ifdef CONFIG_CPU_SH7763
+	ECMR_TRCCM=0x04000000, ECMR_RCSC= 0x00800000, ECMR_DPAD= 0x00200000,
+	ECMR_RZPF = 0x00100000,
+#endif
+	ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
+	ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
+	ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
+	ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004, ECMR_DM = 0x00000002,
+	ECMR_PRM = 0x00000001,
+};
+
+#ifdef CONFIG_CPU_SH7763
+#define ECMR_CHG_DM	(ECMR_TRCCM | ECMR_RZPF | ECMR_ZPF | ECMR_PFR | ECMR_RXF | \
+						ECMR_TXF | ECMR_MCT)
+#else
+#define ECMR_CHG_DM	(ECMR_ZPF | ECMR_PFR ECMR_RXF | ECMR_TXF | ECMR_MCT)
+#endif
+
+/* ECSR */
+enum ECSR_STATUS_BIT {
+#ifndef CONFIG_CPU_SH7763
+	ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
+#endif
+	ECSR_LCHNG = 0x04,
+	ECSR_MPD = 0x02, ECSR_ICD = 0x01,
+};
+
+#ifdef CONFIG_CPU_SH7763
+# define ECSR_INIT (ECSR_ICD | ECSIPR_MPDIP)
+#else
+# define ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | \
+			ECSR_LCHNG | ECSR_ICD | ECSIPR_MPDIP)
+#endif
+
+/* ECSIPR */
+enum ECSIPR_STATUS_MASK_BIT {
+#ifndef CONFIG_CPU_SH7763
+	ECSIPR_BRCRXIP = 0x20, ECSIPR_PSRTOIP = 0x10,
+#endif
+	ECSIPR_LCHNGIP = 0x04,
+	ECSIPR_MPDIP = 0x02, ECSIPR_ICDIP = 0x01,
+};
+
+#ifdef CONFIG_CPU_SH7763
+# define ECSIPR_INIT (ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
+#else
+# define ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | \
+				ECSIPR_ICDIP | ECSIPR_MPDIP)
+#endif
+
+/* APR */
+enum APR_BIT {
+	APR_AP = 0x00000004,
+};
+
+/* MPR */
+enum MPR_BIT {
+	MPR_MP = 0x00000006,
+};
+
+/* TRSCER */
+enum DESC_I_BIT {
+	DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
+	DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
+	DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
+	DESC_I_RINT1 = 0x0001,
+};
+
+/* RPADIR */
+enum RPADIR_BIT {
+	RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
+	RPADIR_PADR = 0x0003f,
+};
+
+#ifdef CONFIG_CPU_SH7763
+# define RPADIR_INIT (0x00)
+#else
+# define RPADIR_INIT (RPADIR_PADS1)
+#endif
+
+/* FDR */
+enum FIFO_SIZE_BIT {
+	FIFO_SIZE_T = 0x00000700, FIFO_SIZE_R = 0x00000007,
+};
+
+enum PHY_OFFSETS {
+	PHY_CTRL = 0, PHY_STAT = 1, PHY_IDT1 = 2, PHY_IDT2 = 3,
+	PHY_ANA = 4, PHY_ANL = 5, PHY_ANE = 6,
+	PHY_16 = 16,
+};
+
+/* PHY_CTRL */
+enum PHY_CTRL_BIT {
+	PHY_C_RESET = 0x8000, PHY_C_LOOPBK = 0x4000, PHY_C_SPEEDSL = 0x2000,
+	PHY_C_ANEGEN = 0x1000, PHY_C_PWRDN = 0x0800, PHY_C_ISO = 0x0400,
+	PHY_C_RANEG = 0x0200, PHY_C_DUPLEX = 0x0100, PHY_C_COLT = 0x0080,
+};
+#define DM9161_PHY_C_ANEGEN 0	/* auto nego special */
+
+/* PHY_STAT */
+enum PHY_STAT_BIT {
+	PHY_S_100T4 = 0x8000, PHY_S_100X_F = 0x4000, PHY_S_100X_H = 0x2000,
+	PHY_S_10T_F = 0x1000, PHY_S_10T_H = 0x0800, PHY_S_ANEGC = 0x0020,
+	PHY_S_RFAULT = 0x0010, PHY_S_ANEGA = 0x0008, PHY_S_LINK = 0x0004,
+	PHY_S_JAB = 0x0002, PHY_S_EXTD = 0x0001,
+};
+
+/* PHY_ANA */
+enum PHY_ANA_BIT {
+	PHY_A_NP = 0x8000, PHY_A_ACK = 0x4000, PHY_A_RF = 0x2000,
+	PHY_A_FCS = 0x0400, PHY_A_T4 = 0x0200, PHY_A_FDX = 0x0100,
+	PHY_A_HDX = 0x0080, PHY_A_10FDX = 0x0040, PHY_A_10HDX = 0x0020,
+	PHY_A_SEL = 0x001e,
+	PHY_A_EXT = 0x0001,
+};
+
+/* PHY_ANL */
+enum PHY_ANL_BIT {
+	PHY_L_NP = 0x8000, PHY_L_ACK = 0x4000, PHY_L_RF = 0x2000,
+	PHY_L_FCS = 0x0400, PHY_L_T4 = 0x0200, PHY_L_FDX = 0x0100,
+	PHY_L_HDX = 0x0080, PHY_L_10FDX = 0x0040, PHY_L_10HDX = 0x0020,
+	PHY_L_SEL = 0x001f,
+};
+
+/* PHY_ANE */
+enum PHY_ANE_BIT {
+	PHY_E_PDF = 0x0010, PHY_E_LPNPA = 0x0008, PHY_E_NPA = 0x0004,
+	PHY_E_PRX = 0x0002, PHY_E_LPANEGA = 0x0001,
+};
+
+/* DM9161 */
+enum PHY_16_BIT {
+	PHY_16_BP4B45 = 0x8000, PHY_16_BPSCR = 0x4000, PHY_16_BPALIGN = 0x2000,
+	PHY_16_BP_ADPOK = 0x1000, PHY_16_Repeatmode = 0x0800,
+	PHY_16_TXselect = 0x0400,
+	PHY_16_Rsvd = 0x0200, PHY_16_RMIIEnable = 0x0100,
+	PHY_16_Force100LNK = 0x0080,
+	PHY_16_APDLED_CTL = 0x0040, PHY_16_COLLED_CTL = 0x0020,
+	PHY_16_RPDCTR_EN = 0x0010,
+	PHY_16_ResetStMch = 0x0008, PHY_16_PreamSupr = 0x0004,
+	PHY_16_Sleepmode = 0x0002,
+	PHY_16_RemoteLoopOut = 0x0001,
+};