drivers/net/zorro8390.c - kernel/msm-4.9 - Gitiles

 /*
  *  Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver
  *
  *  (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
  *
  *  ---------------------------------------------------------------------------
  *
  *  This program is based on all the other NE2000 drivers for Linux
  *
  *  ---------------------------------------------------------------------------
  *
  *  This file is subject to the terms and conditions of the GNU General Public
  *  License.  See the file COPYING in the main directory of the Linux
  *  distribution for more details.
  *
  *  ---------------------------------------------------------------------------
  *
  *  The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
  *  Ethernet Controllers.
  */

 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/zorro.h>
 #include <linux/jiffies.h>

 #include <asm/system.h>
 #include <asm/irq.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>

 #define EI_SHIFT(x)	(ei_local->reg_offset[x])
 #define ei_inb(port)   in_8(port)
 #define ei_outb(val,port)  out_8(port,val)
 #define ei_inb_p(port)   in_8(port)
 #define ei_outb_p(val,port)  out_8(port,val)

 static const char version[] =
     "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";

 #include "lib8390.c"

 #define DRV_NAME	"zorro8390"

 #define NE_BASE		(dev->base_addr)
 #define NE_CMD		(0x00*2)
 #define NE_DATAPORT	(0x10*2)	/* NatSemi-defined port window offset. */
 #define NE_RESET	(0x1f*2)	/* Issue a read to reset, a write to clear. */
 #define NE_IO_EXTENT	(0x20*2)

 #define NE_EN0_ISR	(0x07*2)
 #define NE_EN0_DCFG	(0x0e*2)

 #define NE_EN0_RSARLO	(0x08*2)
 #define NE_EN0_RSARHI	(0x09*2)
 #define NE_EN0_RCNTLO	(0x0a*2)
 #define NE_EN0_RXCR	(0x0c*2)
 #define NE_EN0_TXCR	(0x0d*2)
 #define NE_EN0_RCNTHI	(0x0b*2)
 #define NE_EN0_IMR	(0x0f*2)

 #define NESM_START_PG	0x40	/* First page of TX buffer */
 #define NESM_STOP_PG	0x80	/* Last page +1 of RX ring */


 #define WORDSWAP(a)	((((a)>>8)&0xff) | ((a)<<8))


 static struct card_info {
     zorro_id id;
     const char *name;
     unsigned int offset;
 } cards[] __devinitdata = {
     { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
     { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
 };

 static int __devinit zorro8390_init_one(struct zorro_dev *z,
 					const struct zorro_device_id *ent);
 static int __devinit zorro8390_init(struct net_device *dev,
 				    unsigned long board, const char *name,
 				    unsigned long ioaddr);
 static int zorro8390_open(struct net_device *dev);
 static int zorro8390_close(struct net_device *dev);
 static void zorro8390_reset_8390(struct net_device *dev);
 static void zorro8390_get_8390_hdr(struct net_device *dev,
 				   struct e8390_pkt_hdr *hdr, int ring_page);
 static void zorro8390_block_input(struct net_device *dev, int count,
 				  struct sk_buff *skb, int ring_offset);
 static void zorro8390_block_output(struct net_device *dev, const int count,
 				   const unsigned char *buf,
 				   const int start_page);
 static void __devexit zorro8390_remove_one(struct zorro_dev *z);

 static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = {
     { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
     { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
     { 0 }
 };

 static struct zorro_driver zorro8390_driver = {
     .name	= "zorro8390",
     .id_table	= zorro8390_zorro_tbl,
     .probe	= zorro8390_init_one,
     .remove	= __devexit_p(zorro8390_remove_one),
 };

 static int __devinit zorro8390_init_one(struct zorro_dev *z,
 					const struct zorro_device_id *ent)
 {
     struct net_device *dev;
     unsigned long board, ioaddr;
     int err, i;

     for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
 	if (z->id == cards[i].id)
 	    break;
     board = z->resource.start;
     ioaddr = board+cards[i].offset;
     dev = ____alloc_ei_netdev(0);
     if (!dev)
 	return -ENOMEM;
     if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) {
 	free_netdev(dev);
 	return -EBUSY;
     }
     if ((err = zorro8390_init(dev, board, cards[i].name,
 			      ZTWO_VADDR(ioaddr)))) {
 	release_mem_region(ioaddr, NE_IO_EXTENT*2);
 	free_netdev(dev);
 	return err;
     }
     zorro_set_drvdata(z, dev);
     return 0;
 }

 static int __devinit zorro8390_init(struct net_device *dev,
 				    unsigned long board, const char *name,
 				    unsigned long ioaddr)
 {
     int i;
     int err;
     unsigned char SA_prom[32];
     int start_page, stop_page;
     static u32 zorro8390_offsets[16] = {
 	0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
 	0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
     };

     /* Reset card. Who knows what dain-bramaged state it was left in. */
     {
 	unsigned long reset_start_time = jiffies;

 	z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);

 	while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
 	    if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
 		printk(KERN_WARNING " not found (no reset ack).\n");
 		return -ENODEV;
 	    }

 	z_writeb(0xff, ioaddr + NE_EN0_ISR);		/* Ack all intr. */
     }

     /* Read the 16 bytes of station address PROM.
        We must first initialize registers, similar to NS8390_init(eifdev, 0).
        We can't reliably read the SAPROM address without this.
        (I learned the hard way!). */
     {
 	struct {
 	    u32 value;
 	    u32 offset;
 	} program_seq[] = {
 	    {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
 	    {0x48,	NE_EN0_DCFG},	/* Set byte-wide (0x48) access. */
 	    {0x00,	NE_EN0_RCNTLO},	/* Clear the count regs. */
 	    {0x00,	NE_EN0_RCNTHI},
 	    {0x00,	NE_EN0_IMR},	/* Mask completion irq. */
 	    {0xFF,	NE_EN0_ISR},
 	    {E8390_RXOFF, NE_EN0_RXCR},	/* 0x20  Set to monitor */
 	    {E8390_TXOFF, NE_EN0_TXCR},	/* 0x02  and loopback mode. */
 	    {32,	NE_EN0_RCNTLO},
 	    {0x00,	NE_EN0_RCNTHI},
 	    {0x00,	NE_EN0_RSARLO},	/* DMA starting at 0x0000. */
 	    {0x00,	NE_EN0_RSARHI},
 	    {E8390_RREAD+E8390_START, NE_CMD},
 	};
 	for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
 	    z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
 	}
     }
     for (i = 0; i < 16; i++) {
 	SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
 	(void)z_readb(ioaddr + NE_DATAPORT);
     }

     /* We must set the 8390 for word mode. */
     z_writeb(0x49, ioaddr + NE_EN0_DCFG);
     start_page = NESM_START_PG;
     stop_page = NESM_STOP_PG;

     dev->base_addr = ioaddr;
     dev->irq = IRQ_AMIGA_PORTS;

     /* Install the Interrupt handler */
     i = request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, DRV_NAME, dev);
     if (i) return i;

     for(i = 0; i < ETHER_ADDR_LEN; i++)
 	dev->dev_addr[i] = SA_prom[i];

 #ifdef DEBUG
     printk("%pM", dev->dev_addr);
 #endif

     ei_status.name = name;
     ei_status.tx_start_page = start_page;
     ei_status.stop_page = stop_page;
     ei_status.word16 = 1;

     ei_status.rx_start_page = start_page + TX_PAGES;

     ei_status.reset_8390 = &zorro8390_reset_8390;
     ei_status.block_input = &zorro8390_block_input;
     ei_status.block_output = &zorro8390_block_output;
     ei_status.get_8390_hdr = &zorro8390_get_8390_hdr;
     ei_status.reg_offset = zorro8390_offsets;
     dev->open = &zorro8390_open;
     dev->stop = &zorro8390_close;
 #ifdef CONFIG_NET_POLL_CONTROLLER
     dev->poll_controller = __ei_poll;
 #endif

     __NS8390_init(dev, 0);
     err = register_netdev(dev);
     if (err) {
 	free_irq(IRQ_AMIGA_PORTS, dev);
 	return err;
     }

     printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address %pM\n",
 	   dev->name, name, board, dev->dev_addr);

     return 0;
 }

 static int zorro8390_open(struct net_device *dev)
 {
     __ei_open(dev);
     return 0;
 }

 static int zorro8390_close(struct net_device *dev)
 {
     if (ei_debug > 1)
 	printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
     __ei_close(dev);
     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 zorro8390_reset_8390(struct net_device *dev)
 {
     unsigned long reset_start_time = jiffies;

     if (ei_debug > 1)
 	printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies);

     z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);

     ei_status.txing = 0;
     ei_status.dmaing = 0;

     /* This check _should_not_ be necessary, omit eventually. */
     while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
 	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
 	    printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n",
 		   dev->name);
 	    break;
 	}
     z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR);	/* Ack intr. */
 }

 /* Grab the 8390 specific header. Similar to the block_input routine, but
    we don't need to be concerned with ring wrap as the header will be at
    the start of a page, so we optimize accordingly. */

 static void zorro8390_get_8390_hdr(struct net_device *dev,
 				   struct e8390_pkt_hdr *hdr, int ring_page)
 {
     int nic_base = dev->base_addr;
     int cnt;
     short *ptrs;

     /* This *shouldn't* happen. If it does, it's the last thing you'll see */
     if (ei_status.dmaing) {
 	printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr "
 	   "[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing,
 	   ei_status.irqlock);
 	return;
     }

     ei_status.dmaing |= 0x01;
     z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
     z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
     z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
     z_writeb(0, nic_base + NE_EN0_RCNTHI);
     z_writeb(0, nic_base + NE_EN0_RSARLO);		/* On page boundary */
     z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
     z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);

     ptrs = (short*)hdr;
     for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
 	*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);

     z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);	/* Ack intr. */

     hdr->count = WORDSWAP(hdr->count);

     ei_status.dmaing &= ~0x01;
 }

 /* 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 z_writeb. */

 static void zorro8390_block_input(struct net_device *dev, int count,
 				 struct sk_buff *skb, int ring_offset)
 {
     int nic_base = dev->base_addr;
     char *buf = skb->data;
     short *ptrs;
     int cnt;

     /* This *shouldn't* happen. If it does, it's the last thing you'll see */
     if (ei_status.dmaing) {
 	printk(KERN_ERR "%s: DMAing conflict in ne_block_input "
 	   "[DMAstat:%d][irqlock:%d].\n",
 	   dev->name, ei_status.dmaing, ei_status.irqlock);
 	return;
     }
     ei_status.dmaing |= 0x01;
     z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
     z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
     z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
     z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
     z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
     z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
     z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
     ptrs = (short*)buf;
     for (cnt = 0; cnt < (count>>1); cnt++)
 	*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
     if (count & 0x01)
 	buf[count-1] = z_readb(NE_BASE + NE_DATAPORT);

     z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);	/* Ack intr. */
     ei_status.dmaing &= ~0x01;
 }

 static void zorro8390_block_output(struct net_device *dev, int count,
 				   const unsigned char *buf,
 				   const int start_page)
 {
     int nic_base = NE_BASE;
     unsigned long dma_start;
     short *ptrs;
     int cnt;

     /* 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 (count & 0x01)
 	count++;

     /* This *shouldn't* happen. If it does, it's the last thing you'll see */
     if (ei_status.dmaing) {
 	printk(KERN_ERR "%s: DMAing conflict in ne_block_output."
 	   "[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing,
 	   ei_status.irqlock);
 	return;
     }
     ei_status.dmaing |= 0x01;
     /* We should already be in page 0, but to be safe... */
     z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);

     z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);

    /* Now the normal output. */
     z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
     z_writeb(count >> 8,   nic_base + NE_EN0_RCNTHI);
     z_writeb(0x00, nic_base + NE_EN0_RSARLO);
     z_writeb(start_page, nic_base + NE_EN0_RSARHI);

     z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
     ptrs = (short*)buf;
     for (cnt = 0; cnt < count>>1; cnt++)
 	z_writew(*ptrs++, NE_BASE+NE_DATAPORT);

     dma_start = jiffies;

     while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
 	if (time_after(jiffies, dma_start + 2*HZ/100)) {	/* 20ms */
 		printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
 		       dev->name);
 		zorro8390_reset_8390(dev);
 		__NS8390_init(dev,1);
 		break;
 	}

     z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);	/* Ack intr. */
     ei_status.dmaing &= ~0x01;
     return;
 }

 static void __devexit zorro8390_remove_one(struct zorro_dev *z)
 {
     struct net_device *dev = zorro_get_drvdata(z);

     unregister_netdev(dev);
     free_irq(IRQ_AMIGA_PORTS, dev);
     release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2);
     free_netdev(dev);
 }

 static int __init zorro8390_init_module(void)
 {
     return zorro_register_driver(&zorro8390_driver);
 }

 static void __exit zorro8390_cleanup_module(void)
 {
     zorro_unregister_driver(&zorro8390_driver);
 }

 module_init(zorro8390_init_module);
 module_exit(zorro8390_cleanup_module);

 MODULE_LICENSE("GPL");
	/*
	* Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver
	*
	* (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
	*
	* ---------------------------------------------------------------------------
	*
	* This program is based on all the other NE2000 drivers for Linux
	*
	* ---------------------------------------------------------------------------
	*
	* This file is subject to the terms and conditions of the GNU General Public
	* License. See the file COPYING in the main directory of the Linux
	* distribution for more details.
	*
	* ---------------------------------------------------------------------------
	*
	* The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
	* Ethernet Controllers.
	*/

	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/errno.h>
	#include <linux/init.h>
	#include <linux/delay.h>
	#include <linux/netdevice.h>
	#include <linux/etherdevice.h>
	#include <linux/zorro.h>
	#include <linux/jiffies.h>

	#include <asm/system.h>
	#include <asm/irq.h>
	#include <asm/amigaints.h>
	#include <asm/amigahw.h>

	#define EI_SHIFT(x) (ei_local->reg_offset[x])
	#define ei_inb(port) in_8(port)
	#define ei_outb(val,port) out_8(port,val)
	#define ei_inb_p(port) in_8(port)
	#define ei_outb_p(val,port) out_8(port,val)

	static const char version[] =
	"8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";

	#include "lib8390.c"

	#define DRV_NAME "zorro8390"

	#define NE_BASE (dev->base_addr)
	#define NE_CMD (0x00*2)
	#define NE_DATAPORT (0x102) / NatSemi-defined port window offset. */
	#define NE_RESET (0x1f2) / Issue a read to reset, a write to clear. */
	#define NE_IO_EXTENT (0x20*2)

	#define NE_EN0_ISR (0x07*2)
	#define NE_EN0_DCFG (0x0e*2)

	#define NE_EN0_RSARLO (0x08*2)
	#define NE_EN0_RSARHI (0x09*2)
	#define NE_EN0_RCNTLO (0x0a*2)
	#define NE_EN0_RXCR (0x0c*2)
	#define NE_EN0_TXCR (0x0d*2)
	#define NE_EN0_RCNTHI (0x0b*2)
	#define NE_EN0_IMR (0x0f*2)

	#define NESM_START_PG 0x40 /* First page of TX buffer */
	#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */


	#define WORDSWAP(a) ((((a)>>8)&0xff) \| ((a)<<8))


	static struct card_info {
	zorro_id id;
	const char *name;
	unsigned int offset;
	} cards[] __devinitdata = {
	{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
	{ ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
	};

	static int __devinit zorro8390_init_one(struct zorro_dev *z,
	const struct zorro_device_id *ent);
	static int __devinit zorro8390_init(struct net_device *dev,
	unsigned long board, const char *name,
	unsigned long ioaddr);
	static int zorro8390_open(struct net_device *dev);
	static int zorro8390_close(struct net_device *dev);
	static void zorro8390_reset_8390(struct net_device *dev);
	static void zorro8390_get_8390_hdr(struct net_device *dev,
	struct e8390_pkt_hdr *hdr, int ring_page);
	static void zorro8390_block_input(struct net_device *dev, int count,
	struct sk_buff *skb, int ring_offset);
	static void zorro8390_block_output(struct net_device *dev, const int count,
	const unsigned char *buf,
	const int start_page);
	static void __devexit zorro8390_remove_one(struct zorro_dev *z);

	static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = {
	{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
	{ ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
	{ 0 }
	};

	static struct zorro_driver zorro8390_driver = {
	.name = "zorro8390",
	.id_table = zorro8390_zorro_tbl,
	.probe = zorro8390_init_one,
	.remove = __devexit_p(zorro8390_remove_one),
	};

	static int __devinit zorro8390_init_one(struct zorro_dev *z,
	const struct zorro_device_id *ent)
	{
	struct net_device *dev;
	unsigned long board, ioaddr;
	int err, i;

	for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
	if (z->id == cards[i].id)
	break;
	board = z->resource.start;
	ioaddr = board+cards[i].offset;
	dev = ____alloc_ei_netdev(0);
	if (!dev)
	return -ENOMEM;
	if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) {
	free_netdev(dev);
	return -EBUSY;
	}
	if ((err = zorro8390_init(dev, board, cards[i].name,
	ZTWO_VADDR(ioaddr)))) {
	release_mem_region(ioaddr, NE_IO_EXTENT*2);
	free_netdev(dev);
	return err;
	}
	zorro_set_drvdata(z, dev);
	return 0;
	}

	static int __devinit zorro8390_init(struct net_device *dev,
	unsigned long board, const char *name,
	unsigned long ioaddr)
	{
	int i;
	int err;
	unsigned char SA_prom[32];
	int start_page, stop_page;
	static u32 zorro8390_offsets[16] = {
	0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
	0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
	};

	/* Reset card. Who knows what dain-bramaged state it was left in. */
	{
	unsigned long reset_start_time = jiffies;

	z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);

	while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
	printk(KERN_WARNING " not found (no reset ack).\n");
	return -ENODEV;
	}

	z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
	}

	/* Read the 16 bytes of station address PROM.
	We must first initialize registers, similar to NS8390_init(eifdev, 0).
	We can't reliably read the SAPROM address without this.
	(I learned the hard way!). */
	{
	struct {
	u32 value;
	u32 offset;
	} program_seq[] = {
	{E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
	{0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
	{0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
	{0x00, NE_EN0_RCNTHI},
	{0x00, NE_EN0_IMR}, /* Mask completion irq. */
	{0xFF, NE_EN0_ISR},
	{E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
	{E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */
	{32, NE_EN0_RCNTLO},
	{0x00, NE_EN0_RCNTHI},
	{0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
	{0x00, NE_EN0_RSARHI},
	{E8390_RREAD+E8390_START, NE_CMD},
	};
	for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
	z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
	}
	}
	for (i = 0; i < 16; i++) {
	SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
	(void)z_readb(ioaddr + NE_DATAPORT);
	}

	/* We must set the 8390 for word mode. */
	z_writeb(0x49, ioaddr + NE_EN0_DCFG);
	start_page = NESM_START_PG;
	stop_page = NESM_STOP_PG;

	dev->base_addr = ioaddr;
	dev->irq = IRQ_AMIGA_PORTS;

	/* Install the Interrupt handler */
	i = request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, DRV_NAME, dev);
	if (i) return i;

	for(i = 0; i < ETHER_ADDR_LEN; i++)
	dev->dev_addr[i] = SA_prom[i];

	#ifdef DEBUG
	printk("%pM", dev->dev_addr);
	#endif

	ei_status.name = name;
	ei_status.tx_start_page = start_page;
	ei_status.stop_page = stop_page;
	ei_status.word16 = 1;

	ei_status.rx_start_page = start_page + TX_PAGES;

	ei_status.reset_8390 = &zorro8390_reset_8390;
	ei_status.block_input = &zorro8390_block_input;
	ei_status.block_output = &zorro8390_block_output;
	ei_status.get_8390_hdr = &zorro8390_get_8390_hdr;
	ei_status.reg_offset = zorro8390_offsets;
	dev->open = &zorro8390_open;
	dev->stop = &zorro8390_close;
	#ifdef CONFIG_NET_POLL_CONTROLLER
	dev->poll_controller = __ei_poll;
	#endif

	__NS8390_init(dev, 0);
	err = register_netdev(dev);
	if (err) {
	free_irq(IRQ_AMIGA_PORTS, dev);
	return err;
	}

	printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address %pM\n",
	dev->name, name, board, dev->dev_addr);

	return 0;
	}

	static int zorro8390_open(struct net_device *dev)
	{
	__ei_open(dev);
	return 0;
	}

	static int zorro8390_close(struct net_device *dev)
	{
	if (ei_debug > 1)
	printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
	__ei_close(dev);
	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 zorro8390_reset_8390(struct net_device *dev)
	{
	unsigned long reset_start_time = jiffies;

	if (ei_debug > 1)
	printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies);

	z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);

	ei_status.txing = 0;
	ei_status.dmaing = 0;

	/* This check _should_not_ be necessary, omit eventually. */
	while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
	printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n",
	dev->name);
	break;
	}
	z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */
	}

	/* Grab the 8390 specific header. Similar to the block_input routine, but
	we don't need to be concerned with ring wrap as the header will be at
	the start of a page, so we optimize accordingly. */

	static void zorro8390_get_8390_hdr(struct net_device *dev,
	struct e8390_pkt_hdr *hdr, int ring_page)
	{
	int nic_base = dev->base_addr;
	int cnt;
	short *ptrs;

	/* This shouldn't happen. If it does, it's the last thing you'll see */
	if (ei_status.dmaing) {
	printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr "
	"[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing,
	ei_status.irqlock);
	return;
	}

	ei_status.dmaing \|= 0x01;
	z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
	z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
	z_writeb(0, nic_base + NE_EN0_RCNTHI);
	z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
	z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
	z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);

	ptrs = (short*)hdr;
	for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
	*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);

	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */

	hdr->count = WORDSWAP(hdr->count);

	ei_status.dmaing &= ~0x01;
	}

	/* 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 z_writeb. */

	static void zorro8390_block_input(struct net_device *dev, int count,
	struct sk_buff *skb, int ring_offset)
	{
	int nic_base = dev->base_addr;
	char *buf = skb->data;
	short *ptrs;
	int cnt;

	/* This shouldn't happen. If it does, it's the last thing you'll see */
	if (ei_status.dmaing) {
	printk(KERN_ERR "%s: DMAing conflict in ne_block_input "
	"[DMAstat:%d][irqlock:%d].\n",
	dev->name, ei_status.dmaing, ei_status.irqlock);
	return;
	}
	ei_status.dmaing \|= 0x01;
	z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
	z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
	z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
	z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
	z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
	z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
	ptrs = (short*)buf;
	for (cnt = 0; cnt < (count>>1); cnt++)
	*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
	if (count & 0x01)
	buf[count-1] = z_readb(NE_BASE + NE_DATAPORT);

	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
	ei_status.dmaing &= ~0x01;
	}

	static void zorro8390_block_output(struct net_device *dev, int count,
	const unsigned char *buf,
	const int start_page)
	{
	int nic_base = NE_BASE;
	unsigned long dma_start;
	short *ptrs;
	int cnt;

	/* 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 (count & 0x01)
	count++;

	/* This shouldn't happen. If it does, it's the last thing you'll see */
	if (ei_status.dmaing) {
	printk(KERN_ERR "%s: DMAing conflict in ne_block_output."
	"[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing,
	ei_status.irqlock);
	return;
	}
	ei_status.dmaing \|= 0x01;
	/* We should already be in page 0, but to be safe... */
	z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);

	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);

	/* Now the normal output. */
	z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
	z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
	z_writeb(0x00, nic_base + NE_EN0_RSARLO);
	z_writeb(start_page, nic_base + NE_EN0_RSARHI);

	z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
	ptrs = (short*)buf;
	for (cnt = 0; cnt < count>>1; cnt++)
	z_writew(*ptrs++, NE_BASE+NE_DATAPORT);

	dma_start = jiffies;

	while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
	if (time_after(jiffies, dma_start + 2HZ/100)) { / 20ms */
	printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
	dev->name);
	zorro8390_reset_8390(dev);
	__NS8390_init(dev,1);
	break;
	}

	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
	ei_status.dmaing &= ~0x01;
	return;
	}

	static void __devexit zorro8390_remove_one(struct zorro_dev *z)
	{
	struct net_device *dev = zorro_get_drvdata(z);

	unregister_netdev(dev);
	free_irq(IRQ_AMIGA_PORTS, dev);
	release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2);
	free_netdev(dev);
	}

	static int __init zorro8390_init_module(void)
	{
	return zorro_register_driver(&zorro8390_driver);
	}

	static void __exit zorro8390_cleanup_module(void)
	{
	zorro_unregister_driver(&zorro8390_driver);
	}

	module_init(zorro8390_init_module);
	module_exit(zorro8390_cleanup_module);

	MODULE_LICENSE("GPL");