[linux-2.6-block.git] / drivers / net / zorro8390.c

/*
 *  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,
    };
    DECLARE_MAC_BUF(mac);

    /* 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("%s", print_mac(mac, 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 %s\n",
	   dev->name, name, board, print_mac(mac, 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");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver
	3	*
	4	* (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
	5	*
	6	* ---------------------------------------------------------------------------
	7	*
	8	* This program is based on all the other NE2000 drivers for Linux
	9	*
	10	* ---------------------------------------------------------------------------
	11	*
	12	* This file is subject to the terms and conditions of the GNU General Public
	13	* License. See the file COPYING in the main directory of the Linux
	14	* distribution for more details.
	15	*
	16	* ---------------------------------------------------------------------------
	17	*
	18	* The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
	19	* Ethernet Controllers.
	20	*/
	21
	22	#include <linux/module.h>
	23	#include <linux/kernel.h>
	24	#include <linux/errno.h>
	25	#include <linux/init.h>
	26	#include <linux/delay.h>
	27	#include <linux/netdevice.h>
	28	#include <linux/etherdevice.h>
	29	#include <linux/zorro.h>
ff5688ae	30	#include <linux/jiffies.h>
1da177e4 LT	31
	32	#include <asm/system.h>
	33	#include <asm/irq.h>
	34	#include <asm/amigaints.h>
	35	#include <asm/amigahw.h>
	36
8c6270f9 AV	37	#define EI_SHIFT(x) (ei_local->reg_offset[x])
	38	#define ei_inb(port) in_8(port)
	39	#define ei_outb(val,port) out_8(port,val)
	40	#define ei_inb_p(port) in_8(port)
	41	#define ei_outb_p(val,port) out_8(port,val)
1da177e4	42
8c6270f9 AV	43	static const char version[] =
	44	"8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
	45
	46	#include "lib8390.c"
1da177e4 LT	47
	48	#define DRV_NAME "zorro8390"
	49
	50	#define NE_BASE (dev->base_addr)
	51	#define NE_CMD (0x00*2)
	52	#define NE_DATAPORT (0x102) / NatSemi-defined port window offset. */
	53	#define NE_RESET (0x1f2) / Issue a read to reset, a write to clear. */
	54	#define NE_IO_EXTENT (0x20*2)
	55
	56	#define NE_EN0_ISR (0x07*2)
	57	#define NE_EN0_DCFG (0x0e*2)
	58
	59	#define NE_EN0_RSARLO (0x08*2)
	60	#define NE_EN0_RSARHI (0x09*2)
	61	#define NE_EN0_RCNTLO (0x0a*2)
	62	#define NE_EN0_RXCR (0x0c*2)
	63	#define NE_EN0_TXCR (0x0d*2)
	64	#define NE_EN0_RCNTHI (0x0b*2)
	65	#define NE_EN0_IMR (0x0f*2)
	66
	67	#define NESM_START_PG 0x40 /* First page of TX buffer */
	68	#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
	69
	70
	71	#define WORDSWAP(a) ((((a)>>8)&0xff) \| ((a)<<8))
	72
	73
	74	static struct card_info {
	75	zorro_id id;
	76	const char *name;
	77	unsigned int offset;
	78	} cards[] __devinitdata = {
	79	{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
	80	{ ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
	81	};
	82
	83	static int __devinit zorro8390_init_one(struct zorro_dev *z,
	84	const struct zorro_device_id *ent);
	85	static int __devinit zorro8390_init(struct net_device *dev,
	86	unsigned long board, const char *name,
	87	unsigned long ioaddr);
	88	static int zorro8390_open(struct net_device *dev);
	89	static int zorro8390_close(struct net_device *dev);
	90	static void zorro8390_reset_8390(struct net_device *dev);
	91	static void zorro8390_get_8390_hdr(struct net_device *dev,
	92	struct e8390_pkt_hdr *hdr, int ring_page);
	93	static void zorro8390_block_input(struct net_device *dev, int count,
	94	struct sk_buff *skb, int ring_offset);
	95	static void zorro8390_block_output(struct net_device *dev, const int count,
	96	const unsigned char *buf,
	97	const int start_page);
	98	static void __devexit zorro8390_remove_one(struct zorro_dev *z);
	99
	100	static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = {
	101	{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
	102	{ ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
	103	{ 0 }
	104	};
	105
	106	static struct zorro_driver zorro8390_driver = {
	107	.name = "zorro8390",
	108	.id_table = zorro8390_zorro_tbl,
	109	.probe = zorro8390_init_one,
	110	.remove = __devexit_p(zorro8390_remove_one),
111	};
112
113	static int __devinit zorro8390_init_one(struct zorro_dev *z,
114	const struct zorro_device_id *ent)
115	{
116	struct net_device *dev;
117	unsigned long board, ioaddr;
118	int err, i;
119
120	for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
121	if (z->id == cards[i].id)
122	break;
123	board = z->resource.start;
124	ioaddr = board+cards[i].offset;
8c6270f9	125	dev = ____alloc_ei_netdev(0);
1da177e4 LT	126	if (!dev)
1da177e4 LT	127	return -ENOMEM;
1da177e4 LT	128	if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) {
	129	free_netdev(dev);
	130	return -EBUSY;
	131	}
	132	if ((err = zorro8390_init(dev, board, cards[i].name,
	133	ZTWO_VADDR(ioaddr)))) {
	134	release_mem_region(ioaddr, NE_IO_EXTENT*2);
	135	free_netdev(dev);
	136	return err;
	137	}
	138	zorro_set_drvdata(z, dev);
	139	return 0;
	140	}
	141
	142	static int __devinit zorro8390_init(struct net_device *dev,
	143	unsigned long board, const char *name,
	144	unsigned long ioaddr)
	145	{
	146	int i;
	147	int err;
	148	unsigned char SA_prom[32];
	149	int start_page, stop_page;
	150	static u32 zorro8390_offsets[16] = {
	151	0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
	152	0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
	153	};
0795af57	154	DECLARE_MAC_BUF(mac);
1da177e4 LT	155
	156	/* Reset card. Who knows what dain-bramaged state it was left in. */
	157	{
	158	unsigned long reset_start_time = jiffies;
	159
	160	z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
	161
	162	while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
ff5688ae	163	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4 LT	164	printk(KERN_WARNING " not found (no reset ack).\n");
	165	return -ENODEV;
	166	}
	167
	168	z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
	169	}
	170
	171	/* Read the 16 bytes of station address PROM.
	172	We must first initialize registers, similar to NS8390_init(eifdev, 0).
	173	We can't reliably read the SAPROM address without this.
	174	(I learned the hard way!). */
	175	{
	176	struct {
	177	u32 value;
	178	u32 offset;
	179	} program_seq[] = {
	180	{E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
	181	{0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
	182	{0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
	183	{0x00, NE_EN0_RCNTHI},
	184	{0x00, NE_EN0_IMR}, /* Mask completion irq. */
	185	{0xFF, NE_EN0_ISR},
	186	{E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
	187	{E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */
	188	{32, NE_EN0_RCNTLO},
	189	{0x00, NE_EN0_RCNTHI},
	190	{0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
	191	{0x00, NE_EN0_RSARHI},
	192	{E8390_RREAD+E8390_START, NE_CMD},
	193	};
ff8ac609	194	for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
1da177e4 LT	195	z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
	196	}
	197	}
	198	for (i = 0; i < 16; i++) {
	199	SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
	200	(void)z_readb(ioaddr + NE_DATAPORT);
	201	}
	202
	203	/* We must set the 8390 for word mode. */
	204	z_writeb(0x49, ioaddr + NE_EN0_DCFG);
	205	start_page = NESM_START_PG;
	206	stop_page = NESM_STOP_PG;
	207
	208	dev->base_addr = ioaddr;
	209	dev->irq = IRQ_AMIGA_PORTS;
	210
	211	/* Install the Interrupt handler */
8c6270f9	212	i = request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, DRV_NAME, dev);
1da177e4 LT	213	if (i) return i;
1da177e4 LT	214
0795af57 JP	215	for(i = 0; i < ETHER_ADDR_LEN; i++)
	216	dev->dev_addr[i] = SA_prom[i];
	217
1da177e4	218	#ifdef DEBUG
0795af57	219	printk("%s", print_mac(mac, dev->dev_addr));
1da177e4	220	#endif
1da177e4 LT	221
	222	ei_status.name = name;
	223	ei_status.tx_start_page = start_page;
	224	ei_status.stop_page = stop_page;
	225	ei_status.word16 = 1;
	226
	227	ei_status.rx_start_page = start_page + TX_PAGES;
	228
	229	ei_status.reset_8390 = &zorro8390_reset_8390;
	230	ei_status.block_input = &zorro8390_block_input;
	231	ei_status.block_output = &zorro8390_block_output;
	232	ei_status.get_8390_hdr = &zorro8390_get_8390_hdr;
	233	ei_status.reg_offset = zorro8390_offsets;
	234	dev->open = &zorro8390_open;
	235	dev->stop = &zorro8390_close;
	236	#ifdef CONFIG_NET_POLL_CONTROLLER
8c6270f9	237	dev->poll_controller = __ei_poll;
1da177e4 LT	238	#endif
1da177e4 LT	239
8c6270f9	240	__NS8390_init(dev, 0);
1da177e4 LT	241	err = register_netdev(dev);
	242	if (err) {
	243	free_irq(IRQ_AMIGA_PORTS, dev);
	244	return err;
	245	}
	246
0795af57 JP	247	printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address %s\n",
0795af57 JP	248	dev->name, name, board, print_mac(mac, dev->dev_addr));
1da177e4 LT	249
	250	return 0;
	251	}
	252
	253	static int zorro8390_open(struct net_device *dev)
	254	{
8c6270f9	255	__ei_open(dev);
1da177e4 LT	256	return 0;
	257	}
	258
	259	static int zorro8390_close(struct net_device *dev)
	260	{
	261	if (ei_debug > 1)
	262	printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
8c6270f9	263	__ei_close(dev);
1da177e4 LT	264	return 0;
	265	}
	266
	267	/* Hard reset the card. This used to pause for the same period that a
	268	8390 reset command required, but that shouldn't be necessary. */
	269	static void zorro8390_reset_8390(struct net_device *dev)
	270	{
	271	unsigned long reset_start_time = jiffies;
	272
	273	if (ei_debug > 1)
	274	printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies);
	275
	276	z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
	277
	278	ei_status.txing = 0;
	279	ei_status.dmaing = 0;
	280
	281	/* This check _should_not_ be necessary, omit eventually. */
	282	while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
ff5688ae	283	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4 LT	284	printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n",
	285	dev->name);
	286	break;
	287	}
	288	z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */
	289	}
	290
	291	/* Grab the 8390 specific header. Similar to the block_input routine, but
	292	we don't need to be concerned with ring wrap as the header will be at
	293	the start of a page, so we optimize accordingly. */
	294
	295	static void zorro8390_get_8390_hdr(struct net_device *dev,
	296	struct e8390_pkt_hdr *hdr, int ring_page)
	297	{
	298	int nic_base = dev->base_addr;
	299	int cnt;
	300	short *ptrs;
	301
	302	/* This shouldn't happen. If it does, it's the last thing you'll see */
	303	if (ei_status.dmaing) {
	304	printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr "
	305	"[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing,
	306	ei_status.irqlock);
	307	return;
	308	}
	309
	310	ei_status.dmaing \|= 0x01;
	311	z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
	312	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
	313	z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
	314	z_writeb(0, nic_base + NE_EN0_RCNTHI);
	315	z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
	316	z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
	317	z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
	318
	319	ptrs = (short*)hdr;
	320	for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
	321	*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
	322
	323	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
	324
	325	hdr->count = WORDSWAP(hdr->count);
	326
	327	ei_status.dmaing &= ~0x01;
	328	}
	329
	330	/* Block input and output, similar to the Crynwr packet driver. If you
	331	are porting to a new ethercard, look at the packet driver source for hints.
	332	The NEx000 doesn't share the on-board packet memory -- you have to put
	333	the packet out through the "remote DMA" dataport using z_writeb. */
	334
	335	static void zorro8390_block_input(struct net_device *dev, int count,
	336	struct sk_buff *skb, int ring_offset)
	337	{
	338	int nic_base = dev->base_addr;
	339	char *buf = skb->data;
	340	short *ptrs;
	341	int cnt;
	342
	343	/* This shouldn't happen. If it does, it's the last thing you'll see */
	344	if (ei_status.dmaing) {
	345	printk(KERN_ERR "%s: DMAing conflict in ne_block_input "
	346	"[DMAstat:%d][irqlock:%d].\n",
	347	dev->name, ei_status.dmaing, ei_status.irqlock);
348	return;
349	}
350	ei_status.dmaing \|= 0x01;
351	z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
352	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
353	z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
354	z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
355	z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
356	z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
357	z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
358	ptrs = (short*)buf;
359	for (cnt = 0; cnt < (count>>1); cnt++)
360	*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
361	if (count & 0x01)
362	buf[count-1] = z_readb(NE_BASE + NE_DATAPORT);
363
364	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
365	ei_status.dmaing &= ~0x01;
366	}
367
368	static void zorro8390_block_output(struct net_device *dev, int count,
369	const unsigned char *buf,
370	const int start_page)
371	{
372	int nic_base = NE_BASE;
373	unsigned long dma_start;
374	short *ptrs;
375	int cnt;
376
377	/* Round the count up for word writes. Do we need to do this?
378	What effect will an odd byte count have on the 8390?
379	I should check someday. */
380	if (count & 0x01)
381	count++;
382
383	/* This shouldn't happen. If it does, it's the last thing you'll see */
384	if (ei_status.dmaing) {
385	printk(KERN_ERR "%s: DMAing conflict in ne_block_output."
386	"[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing,
387	ei_status.irqlock);
388	return;
389	}
390	ei_status.dmaing \|= 0x01;
391	/* We should already be in page 0, but to be safe... */
392	z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
393
394	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
395
396	/* Now the normal output. */
397	z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
398	z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
399	z_writeb(0x00, nic_base + NE_EN0_RSARLO);
400	z_writeb(start_page, nic_base + NE_EN0_RSARHI);
401
402	z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
403	ptrs = (short*)buf;
404	for (cnt = 0; cnt < count>>1; cnt++)
405	z_writew(*ptrs++, NE_BASE+NE_DATAPORT);
406
407	dma_start = jiffies;
408
409	while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
ff5688ae	410	if (time_after(jiffies, dma_start + 2HZ/100)) { / 20ms */
1da177e4 LT	411	printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
	412	dev->name);
	413	zorro8390_reset_8390(dev);
8c6270f9	414	__NS8390_init(dev,1);
1da177e4 LT	415	break;
	416	}
	417
	418	z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
	419	ei_status.dmaing &= ~0x01;
	420	return;
	421	}
	422
	423	static void __devexit zorro8390_remove_one(struct zorro_dev *z)
	424	{
	425	struct net_device *dev = zorro_get_drvdata(z);
	426
	427	unregister_netdev(dev);
	428	free_irq(IRQ_AMIGA_PORTS, dev);
	429	release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2);
	430	free_netdev(dev);
	431	}
	432
	433	static int __init zorro8390_init_module(void)
	434	{
33d8675e	435	return zorro_register_driver(&zorro8390_driver);
1da177e4 LT	436	}
	437
	438	static void __exit zorro8390_cleanup_module(void)
	439	{
	440	zorro_unregister_driver(&zorro8390_driver);
	441	}
	442
	443	module_init(zorro8390_init_module);
	444	module_exit(zorro8390_cleanup_module);
	445
	446	MODULE_LICENSE("GPL");