Initial import

1 files changed, 1015 insertions, 0 deletions

diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c
new file mode 100644
index 000000000..0443654f0
--- /dev/null
+++ b/drivers/net/ethernet/8390/ax88796.c
@@ -0,0 +1,1015 @@
+/* drivers/net/ethernet/8390/ax88796.c
+ *
+ * Copyright 2005,2007 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Asix AX88796 10/100 Ethernet controller support
+ *	Based on ne.c, by Donald Becker, et-al.
+ *
+ * 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 <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/isapnp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mdio-bitbang.h>
+#include <linux/phy.h>
+#include <linux/eeprom_93cx6.h>
+#include <linux/slab.h>
+
+#include <net/ax88796.h>
+
+
+/* Rename the lib8390.c functions to show that they are in this driver */
+#define __ei_open ax_ei_open
+#define __ei_close ax_ei_close
+#define __ei_poll ax_ei_poll
+#define __ei_start_xmit ax_ei_start_xmit
+#define __ei_tx_timeout ax_ei_tx_timeout
+#define __ei_get_stats ax_ei_get_stats
+#define __ei_set_multicast_list ax_ei_set_multicast_list
+#define __ei_interrupt ax_ei_interrupt
+#define ____alloc_ei_netdev ax__alloc_ei_netdev
+#define __NS8390_init ax_NS8390_init
+
+/* force unsigned long back to 'void __iomem *' */
+#define ax_convert_addr(_a) ((void __force __iomem *)(_a))
+
+#define ei_inb(_a) readb(ax_convert_addr(_a))
+#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
+
+#define ei_inb_p(_a) ei_inb(_a)
+#define ei_outb_p(_v, _a) ei_outb(_v, _a)
+
+/* define EI_SHIFT() to take into account our register offsets */
+#define EI_SHIFT(x) (ei_local->reg_offset[(x)])
+
+/* Ensure we have our RCR base value */
+#define AX88796_PLATFORM
+
+static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n";
+
+#include "lib8390.c"
+
+#define DRV_NAME "ax88796"
+#define DRV_VERSION "1.00"
+
+/* from ne.c */
+#define NE_CMD		EI_SHIFT(0x00)
+#define NE_RESET	EI_SHIFT(0x1f)
+#define NE_DATAPORT	EI_SHIFT(0x10)
+
+#define NE1SM_START_PG	0x20	/* First page of TX buffer */
+#define NE1SM_STOP_PG	0x40	/* Last page +1 of RX ring */
+#define NESM_START_PG	0x40	/* First page of TX buffer */
+#define NESM_STOP_PG	0x80	/* Last page +1 of RX ring */
+
+#define AX_GPOC_PPDSET	BIT(6)
+
+static u32 ax_msg_enable;
+
+/* device private data */
+
+struct ax_device {
+	struct mii_bus *mii_bus;
+	struct mdiobb_ctrl bb_ctrl;
+	struct phy_device *phy_dev;
+	void __iomem *addr_memr;
+	u8 reg_memr;
+	int link;
+	int speed;
+	int duplex;
+
+	void __iomem *map2;
+	const struct ax_plat_data *plat;
+
+	unsigned char running;
+	unsigned char resume_open;
+	unsigned int irqflags;
+
+	u32 reg_offsets[0x20];
+};
+
+static inline struct ax_device *to_ax_dev(struct net_device *dev)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	return (struct ax_device *)(ei_local + 1);
+}
+
+/*
+ * ax_initial_check
+ *
+ * do an initial probe for the card to check whether it exists
+ * and is functional
+ */
+static int ax_initial_check(struct net_device *dev)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	void __iomem *ioaddr = ei_local->mem;
+	int reg0;
+	int regd;
+
+	reg0 = ei_inb(ioaddr);
+	if (reg0 == 0xFF)
+		return -ENODEV;
+
+	ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD);
+	regd = ei_inb(ioaddr + 0x0d);
+	ei_outb(0xff, ioaddr + 0x0d);
+	ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD);
+	ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
+	if (ei_inb(ioaddr + EN0_COUNTER0) != 0) {
+		ei_outb(reg0, ioaddr);
+		ei_outb(regd, ioaddr + 0x0d);	/* Restore the old values. */
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/*
+ * Hard reset the card. This used to pause for the same period that a
+ * 8390 reset command required, but that shouldn't be necessary.
+ */
+static void ax_reset_8390(struct net_device *dev)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	unsigned long reset_start_time = jiffies;
+	void __iomem *addr = (void __iomem *)dev->base_addr;
+
+	netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
+
+	ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
+
+	ei_local->txing = 0;
+	ei_local->dmaing = 0;
+
+	/* This check _should_not_ be necessary, omit eventually. */
+	while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
+		if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) {
+			netdev_warn(dev, "%s: did not complete.\n", __func__);
+			break;
+		}
+	}
+
+	ei_outb(ENISR_RESET, addr + EN0_ISR);	/* Ack intr. */
+}
+
+
+static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
+			    int ring_page)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	void __iomem *nic_base = ei_local->mem;
+
+	/* This *shouldn't* happen. If it does, it's the last thing you'll see */
+	if (ei_local->dmaing) {
+		netdev_err(dev, "DMAing conflict in %s "
+			"[DMAstat:%d][irqlock:%d].\n",
+			__func__,
+			ei_local->dmaing, ei_local->irqlock);
+		return;
+	}
+
+	ei_local->dmaing |= 0x01;
+	ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
+	ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
+	ei_outb(0, nic_base + EN0_RCNTHI);
+	ei_outb(0, nic_base + EN0_RSARLO);		/* On page boundary */
+	ei_outb(ring_page, nic_base + EN0_RSARHI);
+	ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+
+	if (ei_local->word16)
+		ioread16_rep(nic_base + NE_DATAPORT, hdr,
+			     sizeof(struct e8390_pkt_hdr) >> 1);
+	else
+		ioread8_rep(nic_base + NE_DATAPORT, hdr,
+			    sizeof(struct e8390_pkt_hdr));
+
+	ei_outb(ENISR_RDC, nic_base + EN0_ISR);	/* Ack intr. */
+	ei_local->dmaing &= ~0x01;
+
+	le16_to_cpus(&hdr->count);
+}
+
+
+/*
+ * Block input and output, similar to the Crynwr packet driver. If
+ * you are porting to a new ethercard, look at the packet driver
+ * source for hints. The NEx000 doesn't share the on-board packet
+ * memory -- you have to put the packet out through the "remote DMA"
+ * dataport using ei_outb.
+ */
+static void ax_block_input(struct net_device *dev, int count,
+			   struct sk_buff *skb, int ring_offset)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	void __iomem *nic_base = ei_local->mem;
+	char *buf = skb->data;
+
+	if (ei_local->dmaing) {
+		netdev_err(dev,
+			"DMAing conflict in %s "
+			"[DMAstat:%d][irqlock:%d].\n",
+			__func__,
+			ei_local->dmaing, ei_local->irqlock);
+		return;
+	}
+
+	ei_local->dmaing |= 0x01;
+
+	ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD);
+	ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
+	ei_outb(count >> 8, nic_base + EN0_RCNTHI);
+	ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
+	ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
+	ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+
+	if (ei_local->word16) {
+		ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1);
+		if (count & 0x01)
+			buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
+
+	} else {
+		ioread8_rep(nic_base + NE_DATAPORT, buf, count);
+	}
+
+	ei_local->dmaing &= ~1;
+}
+
+static void ax_block_output(struct net_device *dev, int count,
+			    const unsigned char *buf, const int start_page)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	void __iomem *nic_base = ei_local->mem;
+	unsigned long dma_start;
+
+	/*
+	 * Round the count up for word writes. Do we need to do this?
+	 * What effect will an odd byte count have on the 8390?  I
+	 * should check someday.
+	 */
+	if (ei_local->word16 && (count & 0x01))
+		count++;
+
+	/* This *shouldn't* happen. If it does, it's the last thing you'll see */
+	if (ei_local->dmaing) {
+		netdev_err(dev, "DMAing conflict in %s."
+			"[DMAstat:%d][irqlock:%d]\n",
+			__func__,
+		       ei_local->dmaing, ei_local->irqlock);
+		return;
+	}
+
+	ei_local->dmaing |= 0x01;
+	/* We should already be in page 0, but to be safe... */
+	ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
+
+	ei_outb(ENISR_RDC, nic_base + EN0_ISR);
+
+	/* Now the normal output. */
+	ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
+	ei_outb(count >> 8, nic_base + EN0_RCNTHI);
+	ei_outb(0x00, nic_base + EN0_RSARLO);
+	ei_outb(start_page, nic_base + EN0_RSARHI);
+
+	ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
+	if (ei_local->word16)
+		iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1);
+	else
+		iowrite8_rep(nic_base + NE_DATAPORT, buf, count);
+
+	dma_start = jiffies;
+
+	while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
+		if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */
+			netdev_warn(dev, "timeout waiting for Tx RDC.\n");
+			ax_reset_8390(dev);
+			ax_NS8390_init(dev, 1);
+			break;
+		}
+	}
+
+	ei_outb(ENISR_RDC, nic_base + EN0_ISR);	/* Ack intr. */
+	ei_local->dmaing &= ~0x01;
+}
+
+/* definitions for accessing MII/EEPROM interface */
+
+#define AX_MEMR			EI_SHIFT(0x14)
+#define AX_MEMR_MDC		BIT(0)
+#define AX_MEMR_MDIR		BIT(1)
+#define AX_MEMR_MDI		BIT(2)
+#define AX_MEMR_MDO		BIT(3)
+#define AX_MEMR_EECS		BIT(4)
+#define AX_MEMR_EEI		BIT(5)
+#define AX_MEMR_EEO		BIT(6)
+#define AX_MEMR_EECLK		BIT(7)
+
+static void ax_handle_link_change(struct net_device *dev)
+{
+	struct ax_device  *ax = to_ax_dev(dev);
+	struct phy_device *phy_dev = ax->phy_dev;
+	int status_change = 0;
+
+	if (phy_dev->link && ((ax->speed != phy_dev->speed) ||
+			     (ax->duplex != phy_dev->duplex))) {
+
+		ax->speed = phy_dev->speed;
+		ax->duplex = phy_dev->duplex;
+		status_change = 1;
+	}
+
+	if (phy_dev->link != ax->link) {
+		if (!phy_dev->link) {
+			ax->speed = 0;
+			ax->duplex = -1;
+		}
+		ax->link = phy_dev->link;
+
+		status_change = 1;
+	}
+
+	if (status_change)
+		phy_print_status(phy_dev);
+}
+
+static int ax_mii_probe(struct net_device *dev)
+{
+	struct ax_device  *ax = to_ax_dev(dev);
+	struct phy_device *phy_dev = NULL;
+	int ret;
+
+	/* find the first phy */
+	phy_dev = phy_find_first(ax->mii_bus);
+	if (!phy_dev) {
+		netdev_err(dev, "no PHY found\n");
+		return -ENODEV;
+	}
+
+	ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change,
+				 PHY_INTERFACE_MODE_MII);
+	if (ret) {
+		netdev_err(dev, "Could not attach to PHY\n");
+		return ret;
+	}
+
+	/* mask with MAC supported features */
+	phy_dev->supported &= PHY_BASIC_FEATURES;
+	phy_dev->advertising = phy_dev->supported;
+
+	ax->phy_dev = phy_dev;
+
+	netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
+		    phy_dev->drv->name, dev_name(&phy_dev->dev), phy_dev->irq);
+
+	return 0;
+}
+
+static void ax_phy_switch(struct net_device *dev, int on)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	struct ax_device *ax = to_ax_dev(dev);
+
+	u8 reg_gpoc =  ax->plat->gpoc_val;
+
+	if (!!on)
+		reg_gpoc &= ~AX_GPOC_PPDSET;
+	else
+		reg_gpoc |= AX_GPOC_PPDSET;
+
+	ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17));
+}
+
+static int ax_open(struct net_device *dev)
+{
+	struct ax_device *ax = to_ax_dev(dev);
+	int ret;
+
+	netdev_dbg(dev, "open\n");
+
+	ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
+			  dev->name, dev);
+	if (ret)
+		goto failed_request_irq;
+
+	/* turn the phy on (if turned off) */
+	ax_phy_switch(dev, 1);
+
+	ret = ax_mii_probe(dev);
+	if (ret)
+		goto failed_mii_probe;
+	phy_start(ax->phy_dev);
+
+	ret = ax_ei_open(dev);
+	if (ret)
+		goto failed_ax_ei_open;
+
+	ax->running = 1;
+
+	return 0;
+
+ failed_ax_ei_open:
+	phy_disconnect(ax->phy_dev);
+ failed_mii_probe:
+	ax_phy_switch(dev, 0);
+	free_irq(dev->irq, dev);
+ failed_request_irq:
+	return ret;
+}
+
+static int ax_close(struct net_device *dev)
+{
+	struct ax_device *ax = to_ax_dev(dev);
+
+	netdev_dbg(dev, "close\n");
+
+	ax->running = 0;
+	wmb();
+
+	ax_ei_close(dev);
+
+	/* turn the phy off */
+	ax_phy_switch(dev, 0);
+	phy_disconnect(ax->phy_dev);
+
+	free_irq(dev->irq, dev);
+	return 0;
+}
+
+static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
+{
+	struct ax_device *ax = to_ax_dev(dev);
+	struct phy_device *phy_dev = ax->phy_dev;
+
+	if (!netif_running(dev))
+		return -EINVAL;
+
+	if (!phy_dev)
+		return -ENODEV;
+
+	return phy_mii_ioctl(phy_dev, req, cmd);
+}
+
+/* ethtool ops */
+
+static void ax_get_drvinfo(struct net_device *dev,
+			   struct ethtool_drvinfo *info)
+{
+	struct platform_device *pdev = to_platform_device(dev->dev.parent);
+
+	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+	strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
+}
+
+static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct ax_device *ax = to_ax_dev(dev);
+	struct phy_device *phy_dev = ax->phy_dev;
+
+	if (!phy_dev)
+		return -ENODEV;
+
+	return phy_ethtool_gset(phy_dev, cmd);
+}
+
+static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct ax_device *ax = to_ax_dev(dev);
+	struct phy_device *phy_dev = ax->phy_dev;
+
+	if (!phy_dev)
+		return -ENODEV;
+
+	return phy_ethtool_sset(phy_dev, cmd);
+}
+
+static u32 ax_get_msglevel(struct net_device *dev)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+
+	return ei_local->msg_enable;
+}
+
+static void ax_set_msglevel(struct net_device *dev, u32 v)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+
+	ei_local->msg_enable = v;
+}
+
+static const struct ethtool_ops ax_ethtool_ops = {
+	.get_drvinfo		= ax_get_drvinfo,
+	.get_settings		= ax_get_settings,
+	.set_settings		= ax_set_settings,
+	.get_link		= ethtool_op_get_link,
+	.get_ts_info		= ethtool_op_get_ts_info,
+	.get_msglevel		= ax_get_msglevel,
+	.set_msglevel		= ax_set_msglevel,
+};
+
+#ifdef CONFIG_AX88796_93CX6
+static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom)
+{
+	struct ei_device *ei_local = eeprom->data;
+	u8 reg = ei_inb(ei_local->mem + AX_MEMR);
+
+	eeprom->reg_data_in = reg & AX_MEMR_EEI;
+	eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */
+	eeprom->reg_data_clock = reg & AX_MEMR_EECLK;
+	eeprom->reg_chip_select = reg & AX_MEMR_EECS;
+}
+
+static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom)
+{
+	struct ei_device *ei_local = eeprom->data;
+	u8 reg = ei_inb(ei_local->mem + AX_MEMR);
+
+	reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS);
+
+	if (eeprom->reg_data_in)
+		reg |= AX_MEMR_EEI;
+	if (eeprom->reg_data_clock)
+		reg |= AX_MEMR_EECLK;
+	if (eeprom->reg_chip_select)
+		reg |= AX_MEMR_EECS;
+
+	ei_outb(reg, ei_local->mem + AX_MEMR);
+	udelay(10);
+}
+#endif
+
+static const struct net_device_ops ax_netdev_ops = {
+	.ndo_open		= ax_open,
+	.ndo_stop		= ax_close,
+	.ndo_do_ioctl		= ax_ioctl,
+
+	.ndo_start_xmit		= ax_ei_start_xmit,
+	.ndo_tx_timeout		= ax_ei_tx_timeout,
+	.ndo_get_stats		= ax_ei_get_stats,
+	.ndo_set_rx_mode	= ax_ei_set_multicast_list,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_change_mtu		= eth_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= ax_ei_poll,
+#endif
+};
+
+static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level)
+{
+	struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+
+	if (level)
+		ax->reg_memr |= AX_MEMR_MDC;
+	else
+		ax->reg_memr &= ~AX_MEMR_MDC;
+
+	ei_outb(ax->reg_memr, ax->addr_memr);
+}
+
+static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output)
+{
+	struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+
+	if (output)
+		ax->reg_memr &= ~AX_MEMR_MDIR;
+	else
+		ax->reg_memr |= AX_MEMR_MDIR;
+
+	ei_outb(ax->reg_memr, ax->addr_memr);
+}
+
+static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value)
+{
+	struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+
+	if (value)
+		ax->reg_memr |= AX_MEMR_MDO;
+	else
+		ax->reg_memr &= ~AX_MEMR_MDO;
+
+	ei_outb(ax->reg_memr, ax->addr_memr);
+}
+
+static int ax_bb_get_data(struct mdiobb_ctrl *ctrl)
+{
+	struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+	int reg_memr = ei_inb(ax->addr_memr);
+
+	return reg_memr & AX_MEMR_MDI ? 1 : 0;
+}
+
+static struct mdiobb_ops bb_ops = {
+	.owner = THIS_MODULE,
+	.set_mdc = ax_bb_mdc,
+	.set_mdio_dir = ax_bb_dir,
+	.set_mdio_data = ax_bb_set_data,
+	.get_mdio_data = ax_bb_get_data,
+};
+
+/* setup code */
+
+static int ax_mii_init(struct net_device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev->dev.parent);
+	struct ei_device *ei_local = netdev_priv(dev);
+	struct ax_device *ax = to_ax_dev(dev);
+	int err, i;
+
+	ax->bb_ctrl.ops = &bb_ops;
+	ax->addr_memr = ei_local->mem + AX_MEMR;
+	ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl);
+	if (!ax->mii_bus) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	ax->mii_bus->name = "ax88796_mii_bus";
+	ax->mii_bus->parent = dev->dev.parent;
+	snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+		pdev->name, pdev->id);
+
+	ax->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
+	if (!ax->mii_bus->irq) {
+		err = -ENOMEM;
+		goto out_free_mdio_bitbang;
+	}
+
+	for (i = 0; i < PHY_MAX_ADDR; i++)
+		ax->mii_bus->irq[i] = PHY_POLL;
+
+	err = mdiobus_register(ax->mii_bus);
+	if (err)
+		goto out_free_irq;
+
+	return 0;
+
+ out_free_irq:
+	kfree(ax->mii_bus->irq);
+ out_free_mdio_bitbang:
+	free_mdio_bitbang(ax->mii_bus);
+ out:
+	return err;
+}
+
+static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local)
+{
+	void __iomem *ioaddr = ei_local->mem;
+	struct ax_device *ax = to_ax_dev(dev);
+
+	/* Select page 0 */
+	ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD);
+
+	/* set to byte access */
+	ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG);
+	ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17));
+}
+
+/*
+ * ax_init_dev
+ *
+ * initialise the specified device, taking care to note the MAC
+ * address it may already have (if configured), ensure
+ * the device is ready to be used by lib8390.c and registerd with
+ * the network layer.
+ */
+static int ax_init_dev(struct net_device *dev)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+	struct ax_device *ax = to_ax_dev(dev);
+	void __iomem *ioaddr = ei_local->mem;
+	unsigned int start_page;
+	unsigned int stop_page;
+	int ret;
+	int i;
+
+	ret = ax_initial_check(dev);
+	if (ret)
+		goto err_out;
+
+	/* setup goes here */
+
+	ax_initial_setup(dev, ei_local);
+
+	/* read the mac from the card prom if we need it */
+
+	if (ax->plat->flags & AXFLG_HAS_EEPROM) {
+		unsigned char SA_prom[32];
+
+		for (i = 0; i < sizeof(SA_prom); i += 2) {
+			SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT);
+			SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT);
+		}
+
+		if (ax->plat->wordlength == 2)
+			for (i = 0; i < 16; i++)
+				SA_prom[i] = SA_prom[i+i];
+
+		memcpy(dev->dev_addr, SA_prom, ETH_ALEN);
+	}
+
+#ifdef CONFIG_AX88796_93CX6
+	if (ax->plat->flags & AXFLG_HAS_93CX6) {
+		unsigned char mac_addr[ETH_ALEN];
+		struct eeprom_93cx6 eeprom;
+
+		eeprom.data = ei_local;
+		eeprom.register_read = ax_eeprom_register_read;
+		eeprom.register_write = ax_eeprom_register_write;
+		eeprom.width = PCI_EEPROM_WIDTH_93C56;
+
+		eeprom_93cx6_multiread(&eeprom, 0,
+				       (__le16 __force *)mac_addr,
+				       sizeof(mac_addr) >> 1);
+
+		memcpy(dev->dev_addr, mac_addr, ETH_ALEN);
+	}
+#endif
+	if (ax->plat->wordlength == 2) {
+		/* We must set the 8390 for word mode. */
+		ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG);
+		start_page = NESM_START_PG;
+		stop_page = NESM_STOP_PG;
+	} else {
+		start_page = NE1SM_START_PG;
+		stop_page = NE1SM_STOP_PG;
+	}
+
+	/* load the mac-address from the device */
+	if (ax->plat->flags & AXFLG_MAC_FROMDEV) {
+		ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
+			ei_local->mem + E8390_CMD); /* 0x61 */
+		for (i = 0; i < ETH_ALEN; i++)
+			dev->dev_addr[i] =
+				ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
+	}
+
+	if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) &&
+	    ax->plat->mac_addr)
+		memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN);
+
+	ax_reset_8390(dev);
+
+	ei_local->name = "AX88796";
+	ei_local->tx_start_page = start_page;
+	ei_local->stop_page = stop_page;
+	ei_local->word16 = (ax->plat->wordlength == 2);
+	ei_local->rx_start_page = start_page + TX_PAGES;
+
+#ifdef PACKETBUF_MEMSIZE
+	/* Allow the packet buffer size to be overridden by know-it-alls. */
+	ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE;
+#endif
+
+	ei_local->reset_8390 = &ax_reset_8390;
+	ei_local->block_input = &ax_block_input;
+	ei_local->block_output = &ax_block_output;
+	ei_local->get_8390_hdr = &ax_get_8390_hdr;
+	ei_local->priv = 0;
+	ei_local->msg_enable = ax_msg_enable;
+
+	dev->netdev_ops = &ax_netdev_ops;
+	dev->ethtool_ops = &ax_ethtool_ops;
+
+	ret = ax_mii_init(dev);
+	if (ret)
+		goto out_irq;
+
+	ax_NS8390_init(dev, 0);
+
+	ret = register_netdev(dev);
+	if (ret)
+		goto out_irq;
+
+	netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n",
+		    ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr,
+		    dev->dev_addr);
+
+	return 0;
+
+ out_irq:
+	/* cleanup irq */
+	free_irq(dev->irq, dev);
+ err_out:
+	return ret;
+}
+
+static int ax_remove(struct platform_device *pdev)
+{
+	struct net_device *dev = platform_get_drvdata(pdev);
+	struct ei_device *ei_local = netdev_priv(dev);
+	struct ax_device *ax = to_ax_dev(dev);
+	struct resource *mem;
+
+	unregister_netdev(dev);
+	free_irq(dev->irq, dev);
+
+	iounmap(ei_local->mem);
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(mem->start, resource_size(mem));
+
+	if (ax->map2) {
+		iounmap(ax->map2);
+		mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+		release_mem_region(mem->start, resource_size(mem));
+	}
+
+	free_netdev(dev);
+
+	return 0;
+}
+
+/*
+ * ax_probe
+ *
+ * This is the entry point when the platform device system uses to
+ * notify us of a new device to attach to. Allocate memory, find the
+ * resources and information passed, and map the necessary registers.
+ */
+static int ax_probe(struct platform_device *pdev)
+{
+	struct net_device *dev;
+	struct ei_device *ei_local;
+	struct ax_device *ax;
+	struct resource *irq, *mem, *mem2;
+	unsigned long mem_size, mem2_size = 0;
+	int ret = 0;
+
+	dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
+	if (dev == NULL)
+		return -ENOMEM;
+
+	/* ok, let's setup our device */
+	SET_NETDEV_DEV(dev, &pdev->dev);
+	ei_local = netdev_priv(dev);
+	ax = to_ax_dev(dev);
+
+	ax->plat = dev_get_platdata(&pdev->dev);
+	platform_set_drvdata(pdev, dev);
+
+	ei_local->rxcr_base = ax->plat->rcr_val;
+
+	/* find the platform resources */
+	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!irq) {
+		dev_err(&pdev->dev, "no IRQ specified\n");
+		ret = -ENXIO;
+		goto exit_mem;
+	}
+
+	dev->irq = irq->start;
+	ax->irqflags = irq->flags & IRQF_TRIGGER_MASK;
+
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mem) {
+		dev_err(&pdev->dev, "no MEM specified\n");
+		ret = -ENXIO;
+		goto exit_mem;
+	}
+
+	mem_size = resource_size(mem);
+
+	/*
+	 * setup the register offsets from either the platform data or
+	 * by using the size of the resource provided
+	 */
+	if (ax->plat->reg_offsets)
+		ei_local->reg_offset = ax->plat->reg_offsets;
+	else {
+		ei_local->reg_offset = ax->reg_offsets;
+		for (ret = 0; ret < 0x18; ret++)
+			ax->reg_offsets[ret] = (mem_size / 0x18) * ret;
+	}
+
+	if (!request_mem_region(mem->start, mem_size, pdev->name)) {
+		dev_err(&pdev->dev, "cannot reserve registers\n");
+		ret = -ENXIO;
+		goto exit_mem;
+	}
+
+	ei_local->mem = ioremap(mem->start, mem_size);
+	dev->base_addr = (unsigned long)ei_local->mem;
+
+	if (ei_local->mem == NULL) {
+		dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem);
+
+		ret = -ENXIO;
+		goto exit_req;
+	}
+
+	/* look for reset area */
+	mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (!mem2) {
+		if (!ax->plat->reg_offsets) {
+			for (ret = 0; ret < 0x20; ret++)
+				ax->reg_offsets[ret] = (mem_size / 0x20) * ret;
+		}
+	} else {
+		mem2_size = resource_size(mem2);
+
+		if (!request_mem_region(mem2->start, mem2_size, pdev->name)) {
+			dev_err(&pdev->dev, "cannot reserve registers\n");
+			ret = -ENXIO;
+			goto exit_mem1;
+		}
+
+		ax->map2 = ioremap(mem2->start, mem2_size);
+		if (!ax->map2) {
+			dev_err(&pdev->dev, "cannot map reset register\n");
+			ret = -ENXIO;
+			goto exit_mem2;
+		}
+
+		ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem;
+	}
+
+	/* got resources, now initialise and register device */
+	ret = ax_init_dev(dev);
+	if (!ret)
+		return 0;
+
+	if (!ax->map2)
+		goto exit_mem1;
+
+	iounmap(ax->map2);
+
+ exit_mem2:
+	release_mem_region(mem2->start, mem2_size);
+
+ exit_mem1:
+	iounmap(ei_local->mem);
+
+ exit_req:
+	release_mem_region(mem->start, mem_size);
+
+ exit_mem:
+	free_netdev(dev);
+
+	return ret;
+}
+
+/* suspend and resume */
+
+#ifdef CONFIG_PM
+static int ax_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct net_device *ndev = platform_get_drvdata(dev);
+	struct ax_device *ax = to_ax_dev(ndev);
+
+	ax->resume_open = ax->running;
+
+	netif_device_detach(ndev);
+	ax_close(ndev);
+
+	return 0;
+}
+
+static int ax_resume(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct ax_device *ax = to_ax_dev(ndev);
+
+	ax_initial_setup(ndev, netdev_priv(ndev));
+	ax_NS8390_init(ndev, ax->resume_open);
+	netif_device_attach(ndev);
+
+	if (ax->resume_open)
+		ax_open(ndev);
+
+	return 0;
+}
+
+#else
+#define ax_suspend NULL
+#define ax_resume NULL
+#endif
+
+static struct platform_driver axdrv = {
+	.driver	= {
+		.name		= "ax88796",
+	},
+	.probe		= ax_probe,
+	.remove		= ax_remove,
+	.suspend	= ax_suspend,
+	.resume		= ax_resume,
+};
+
+module_platform_driver(axdrv);
+
+MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
+MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:ax88796");