[linux-2.6-block.git] / drivers / net / ne3210.c

/*
	ne3210.c

	Linux driver for Novell NE3210 EISA Network Adapter

	Copyright (C) 1998, Paul Gortmaker.

	This software may be used and distributed according to the terms
	of the GNU General Public License, incorporated herein by reference.

	Information and Code Sources:

	1) Based upon my other EISA 8390 drivers (lne390, es3210, smc-ultra32)
	2) The existing myriad of other Linux 8390 drivers by Donald Becker.
	3) Info for getting IRQ and sh-mem gleaned from the EISA cfg file

	The NE3210 is an EISA shared memory NS8390 implementation.  Shared
	memory address > 1MB should work with this driver.

	Note that the .cfg file (3/11/93, v1.0) has AUI and BNC switched
	around (or perhaps there are some defective/backwards cards ???)

	This driver WILL NOT WORK FOR THE NE3200 - it is completely different
	and does not use an 8390 at all.

	Updated to EISA probing API 5/2003 by Marc Zyngier.
*/

#include <linux/module.h>
#include <linux/eisa.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mm.h>

#include <asm/io.h>
#include <asm/system.h>

#include "8390.h"

#define DRV_NAME "ne3210"

static int ne3210_open(struct net_device *dev);
static int ne3210_close(struct net_device *dev);

static void ne3210_reset_8390(struct net_device *dev);

static void ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
static void ne3210_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page);

#define NE3210_START_PG		0x00    /* First page of TX buffer	*/
#define NE3210_STOP_PG		0x80    /* Last page +1 of RX ring	*/

#define NE3210_IO_EXTENT	0x20
#define NE3210_SA_PROM		0x16	/* Start of e'net addr.		*/
#define NE3210_RESET_PORT	0xc84
#define NE3210_NIC_OFFSET	0x00	/* Hello, the 8390 is *here*	*/

#define NE3210_ADDR0		0x00	/* 3 byte vendor prefix		*/
#define NE3210_ADDR1		0x00
#define NE3210_ADDR2		0x1b

#define NE3210_CFG1		0xc84	/* NB: 0xc84 is also "reset" port. */
#define NE3210_CFG2		0xc90
#define NE3210_CFG_EXTENT       (NE3210_CFG2 - NE3210_CFG1 + 1)

/*
 *	You can OR any of the following bits together and assign it
 *	to NE3210_DEBUG to get verbose driver info during operation.
 *	Currently only the probe one is implemented.
 */

#define NE3210_D_PROBE	0x01
#define NE3210_D_RX_PKT	0x02
#define NE3210_D_TX_PKT	0x04
#define NE3210_D_IRQ	0x08

#define NE3210_DEBUG	0x0

static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
static int ifmap_val[] __initdata = {
		IF_PORT_10BASET,
		IF_PORT_UNKNOWN,
		IF_PORT_10BASE2,
		IF_PORT_AUI,
};

static int __init ne3210_eisa_probe (struct device *device)
{
	unsigned long ioaddr, phys_mem;
	int i, retval, port_index;
	struct eisa_device *edev = to_eisa_device (device);
	struct net_device *dev;

	/* Allocate dev->priv and fill in 8390 specific dev fields. */
	if (!(dev = alloc_ei_netdev ())) {
		printk ("ne3210.c: unable to allocate memory for dev!\n");
		return -ENOMEM;
	}

	SET_NETDEV_DEV(dev, device);
	device->driver_data = dev;
	ioaddr = edev->base_addr;

	if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
		retval = -EBUSY;
		goto out;
	}

	if (!request_region(ioaddr + NE3210_CFG1,
			    NE3210_CFG_EXTENT, DRV_NAME)) {
		retval = -EBUSY;
		goto out1;
	}

#if NE3210_DEBUG & NE3210_D_PROBE
	printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
	printk("ne3210-debug: config regs: %#x %#x\n",
		inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
#endif


	port_index = inb(ioaddr + NE3210_CFG2) >> 6;
	printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr:",
		edev->slot, ifmap[port_index]);
	for(i = 0; i < ETHER_ADDR_LEN; i++)
		printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i)));


	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
	printk(".\nne3210.c: using IRQ %d, ", dev->irq);

	retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
	if (retval) {
		printk (" unable to get IRQ %d.\n", dev->irq);
		goto out2;
	}

	phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;

	/*
	   BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	   the card mem within the region covered by `normal' RAM  !!!
	*/
	if (phys_mem > 1024*1024) {	/* phys addr > 1MB */
		if (phys_mem < virt_to_phys(high_memory)) {
			printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
			printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
			printk(KERN_CRIT "ne3210.c: or to an address above 0x%lx.\n", virt_to_phys(high_memory));
			printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
			retval = -EINVAL;
			goto out3;
		}
	}

	if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
		printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
			phys_mem);
		goto out3;
	}

	printk("%dkB memory at physical address %#lx\n",
	       NE3210_STOP_PG/4, phys_mem);

	ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
	if (!ei_status.mem) {
		printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
		printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
		retval = -EAGAIN;
		goto out4;
	}
	printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
	       NE3210_STOP_PG/4, ei_status.mem);
	dev->mem_start = (unsigned long)ei_status.mem;
	dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;

	/* The 8390 offset is zero for the NE3210 */
	dev->base_addr = ioaddr;

	ei_status.name = "NE3210";
	ei_status.tx_start_page = NE3210_START_PG;
	ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
	ei_status.stop_page = NE3210_STOP_PG;
	ei_status.word16 = 1;
	ei_status.priv = phys_mem;

	if (ei_debug > 0)
		printk("ne3210 loaded.\n");

	ei_status.reset_8390 = &ne3210_reset_8390;
	ei_status.block_input = &ne3210_block_input;
	ei_status.block_output = &ne3210_block_output;
	ei_status.get_8390_hdr = &ne3210_get_8390_hdr;

	dev->open = &ne3210_open;
	dev->stop = &ne3210_close;
#ifdef CONFIG_NET_POLL_CONTROLLER
	dev->poll_controller = ei_poll;
#endif
	dev->if_port = ifmap_val[port_index];

	if ((retval = register_netdev (dev)))
		goto out5;

	NS8390_init(dev, 0);
	return 0;

 out5:
	iounmap(ei_status.mem);
 out4:
	release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
 out3:
	free_irq (dev->irq, dev);
 out2:
	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
 out1:
	release_region (ioaddr, NE3210_IO_EXTENT);
 out:
	free_netdev (dev);

	return retval;
}

static int __devexit ne3210_eisa_remove (struct device *device)
{
	struct net_device  *dev    = device->driver_data;
	unsigned long       ioaddr = to_eisa_device (device)->base_addr;

	unregister_netdev (dev);
	iounmap(ei_status.mem);
	release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
	free_irq (dev->irq, dev);
	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	release_region (ioaddr, NE3210_IO_EXTENT);
	free_netdev (dev);

	return 0;
}

/*
 *	Reset by toggling the "Board Enable" bits (bit 2 and 0).
 */

static void ne3210_reset_8390(struct net_device *dev)
{
	unsigned short ioaddr = dev->base_addr;

	outb(0x04, ioaddr + NE3210_RESET_PORT);
	if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);

	mdelay(2);

	ei_status.txing = 0;
	outb(0x01, ioaddr + NE3210_RESET_PORT);
	if (ei_debug > 1) printk("reset done\n");

	return;
}

/*
 *	Note: In the following three functions is the implicit assumption
 *	that the associated memcpy will only use "rep; movsl" as long as
 *	we keep the counts as some multiple of doublewords. This is a
 *	requirement of the hardware, and also prevents us from using
 *	eth_io_copy_and_sum() since we can't guarantee it will limit
 *	itself to doubleword access.
 */

/*
 *	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. (A single doubleword.)
 */

static void
ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
	void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	hdr->count = (hdr->count + 3) & ~3;     /* Round up allocation. */
}

/*
 *	Block input and output are easy on shared memory ethercards, the only
 *	complication is when the ring buffer wraps. The count will already
 *	be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
 */

static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb,
						  int ring_offset)
{
	void __iomem *start = ei_status.mem + ring_offset - NE3210_START_PG*256;

	if (ring_offset + count > NE3210_STOP_PG*256) {
		/* Packet wraps over end of ring buffer. */
		int semi_count = NE3210_STOP_PG*256 - ring_offset;
		memcpy_fromio(skb->data, start, semi_count);
		count -= semi_count;
		memcpy_fromio(skb->data + semi_count,
				ei_status.mem + TX_PAGES*256, count);
	} else {
		/* Packet is in one chunk. */
		memcpy_fromio(skb->data, start, count);
	}
}

static void ne3210_block_output(struct net_device *dev, int count,
				const unsigned char *buf, int start_page)
{
	void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);

	count = (count + 3) & ~3;     /* Round up to doubleword */
	memcpy_toio(shmem, buf, count);
}

static int ne3210_open(struct net_device *dev)
{
	ei_open(dev);
	return 0;
}

static int ne3210_close(struct net_device *dev)
{

	if (ei_debug > 1)
		printk("%s: Shutting down ethercard.\n", dev->name);

	ei_close(dev);
	return 0;
}

static struct eisa_device_id ne3210_ids[] = {
	{ "EGL0101" },
	{ "NVL1801" },
	{ "" },
};
MODULE_DEVICE_TABLE(eisa, ne3210_ids);

static struct eisa_driver ne3210_eisa_driver = {
	.id_table = ne3210_ids,
	.driver   = {
		.name   = "ne3210",
		.probe  = ne3210_eisa_probe,
		.remove = __devexit_p (ne3210_eisa_remove),
	},
};

MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(eisa, ne3210_ids);

static int ne3210_init(void)
{
	return eisa_driver_register (&ne3210_eisa_driver);
}

static void ne3210_cleanup(void)
{
	eisa_driver_unregister (&ne3210_eisa_driver);
}

module_init (ne3210_init);
module_exit (ne3210_cleanup);
Commit	Line	Data
1da177e4 LT	1	/*
	2	ne3210.c
	3
	4	Linux driver for Novell NE3210 EISA Network Adapter
	5
	6	Copyright (C) 1998, Paul Gortmaker.
	7
	8	This software may be used and distributed according to the terms
	9	of the GNU General Public License, incorporated herein by reference.
	10
	11	Information and Code Sources:
	12
	13	1) Based upon my other EISA 8390 drivers (lne390, es3210, smc-ultra32)
	14	2) The existing myriad of other Linux 8390 drivers by Donald Becker.
	15	3) Info for getting IRQ and sh-mem gleaned from the EISA cfg file
	16
6aa20a22	17	The NE3210 is an EISA shared memory NS8390 implementation. Shared
1da177e4 LT	18	memory address > 1MB should work with this driver.
1da177e4 LT	19
6aa20a22	20	Note that the .cfg file (3/11/93, v1.0) has AUI and BNC switched
1da177e4 LT	21	around (or perhaps there are some defective/backwards cards ???)
	22
	23	This driver WILL NOT WORK FOR THE NE3200 - it is completely different
	24	and does not use an 8390 at all.
	25
	26	Updated to EISA probing API 5/2003 by Marc Zyngier.
	27	*/
	28
1da177e4 LT	29	#include <linux/module.h>
	30	#include <linux/eisa.h>
	31	#include <linux/kernel.h>
	32	#include <linux/errno.h>
	33	#include <linux/string.h>
	34	#include <linux/delay.h>
	35	#include <linux/init.h>
	36	#include <linux/interrupt.h>
	37	#include <linux/netdevice.h>
	38	#include <linux/etherdevice.h>
d7fe0f24	39	#include <linux/mm.h>
1da177e4 LT	40
	41	#include <asm/io.h>
	42	#include <asm/system.h>
	43
	44	#include "8390.h"
	45
	46	#define DRV_NAME "ne3210"
	47
	48	static int ne3210_open(struct net_device *dev);
	49	static int ne3210_close(struct net_device *dev);
	50
	51	static void ne3210_reset_8390(struct net_device *dev);
	52
	53	static void ne3210_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page);
	54	static void ne3210_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset);
	55	static void ne3210_block_output(struct net_device dev, int count, const unsigned char buf, const int start_page);
	56
	57	#define NE3210_START_PG 0x00 /* First page of TX buffer */
	58	#define NE3210_STOP_PG 0x80 /* Last page +1 of RX ring */
	59
	60	#define NE3210_IO_EXTENT 0x20
	61	#define NE3210_SA_PROM 0x16 /* Start of e'net addr. */
	62	#define NE3210_RESET_PORT 0xc84
	63	#define NE3210_NIC_OFFSET 0x00 /* Hello, the 8390 is here */
	64
	65	#define NE3210_ADDR0 0x00 /* 3 byte vendor prefix */
	66	#define NE3210_ADDR1 0x00
	67	#define NE3210_ADDR2 0x1b
	68
	69	#define NE3210_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
	70	#define NE3210_CFG2 0xc90
	71	#define NE3210_CFG_EXTENT (NE3210_CFG2 - NE3210_CFG1 + 1)
	72
	73	/*
	74	* You can OR any of the following bits together and assign it
	75	* to NE3210_DEBUG to get verbose driver info during operation.
	76	* Currently only the probe one is implemented.
	77	*/
	78
	79	#define NE3210_D_PROBE 0x01
	80	#define NE3210_D_RX_PKT 0x02
	81	#define NE3210_D_TX_PKT 0x04
	82	#define NE3210_D_IRQ 0x08
	83
	84	#define NE3210_DEBUG 0x0
	85
	86	static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
	87	static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
	88	static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
	89	static int ifmap_val[] __initdata = {
	90	IF_PORT_10BASET,
	91	IF_PORT_UNKNOWN,
	92	IF_PORT_10BASE2,
	93	IF_PORT_AUI,
	94	};
	95
	96	static int __init ne3210_eisa_probe (struct device *device)
	97	{
	98	unsigned long ioaddr, phys_mem;
	99	int i, retval, port_index;
	100	struct eisa_device *edev = to_eisa_device (device);
	101	struct net_device *dev;
	102
	103	/* Allocate dev->priv and fill in 8390 specific dev fields. */
104	if (!(dev = alloc_ei_netdev ())) {
105	printk ("ne3210.c: unable to allocate memory for dev!\n");
106	return -ENOMEM;
107	}
108
1da177e4 LT	109	SET_NETDEV_DEV(dev, device);
	110	device->driver_data = dev;
	111	ioaddr = edev->base_addr;
	112
	113	if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
	114	retval = -EBUSY;
	115	goto out;
	116	}
	117
	118	if (!request_region(ioaddr + NE3210_CFG1,
	119	NE3210_CFG_EXTENT, DRV_NAME)) {
	120	retval = -EBUSY;
	121	goto out1;
	122	}
	123
	124	#if NE3210_DEBUG & NE3210_D_PROBE
	125	printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
	126	printk("ne3210-debug: config regs: %#x %#x\n",
	127	inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
	128	#endif
	129
	130
	131	port_index = inb(ioaddr + NE3210_CFG2) >> 6;
	132	printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr:",
	133	edev->slot, ifmap[port_index]);
	134	for(i = 0; i < ETHER_ADDR_LEN; i++)
	135	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i)));
6aa20a22	136
1da177e4 LT	137
	138	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	139	dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
	140	printk(".\nne3210.c: using IRQ %d, ", dev->irq);
	141
	142	retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
	143	if (retval) {
	144	printk (" unable to get IRQ %d.\n", dev->irq);
	145	goto out2;
	146	}
	147
	148	phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
	149
	150	/*
	151	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	152	the card mem within the region covered by `normal' RAM !!!
	153	*/
	154	if (phys_mem > 10241024) { / phys addr > 1MB */
	155	if (phys_mem < virt_to_phys(high_memory)) {
	156	printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
	157	printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
	158	printk(KERN_CRIT "ne3210.c: or to an address above 0x%lx.\n", virt_to_phys(high_memory));
	159	printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
	160	retval = -EINVAL;
	161	goto out3;
	162	}
	163	}
6aa20a22	164
1da177e4 LT	165	if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
	166	printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
	167	phys_mem);
	168	goto out3;
	169	}
6aa20a22	170
1da177e4 LT	171	printk("%dkB memory at physical address %#lx\n",
	172	NE3210_STOP_PG/4, phys_mem);
	173
	174	ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
	175	if (!ei_status.mem) {
	176	printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
	177	printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
	178	retval = -EAGAIN;
	179	goto out4;
	180	}
	181	printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
	182	NE3210_STOP_PG/4, ei_status.mem);
	183	dev->mem_start = (unsigned long)ei_status.mem;
	184	dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
	185
	186	/* The 8390 offset is zero for the NE3210 */
	187	dev->base_addr = ioaddr;
	188
	189	ei_status.name = "NE3210";
	190	ei_status.tx_start_page = NE3210_START_PG;
	191	ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
	192	ei_status.stop_page = NE3210_STOP_PG;
	193	ei_status.word16 = 1;
	194	ei_status.priv = phys_mem;
	195
	196	if (ei_debug > 0)
9d8cc1b6	197	printk("ne3210 loaded.\n");
1da177e4 LT	198
	199	ei_status.reset_8390 = &ne3210_reset_8390;
	200	ei_status.block_input = &ne3210_block_input;
	201	ei_status.block_output = &ne3210_block_output;
	202	ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
	203
	204	dev->open = &ne3210_open;
	205	dev->stop = &ne3210_close;
	206	#ifdef CONFIG_NET_POLL_CONTROLLER
	207	dev->poll_controller = ei_poll;
	208	#endif
	209	dev->if_port = ifmap_val[port_index];
	210
	211	if ((retval = register_netdev (dev)))
	212	goto out5;
6aa20a22	213
1da177e4 LT	214	NS8390_init(dev, 0);
	215	return 0;
	216
	217	out5:
	218	iounmap(ei_status.mem);
	219	out4:
	220	release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
	221	out3:
	222	free_irq (dev->irq, dev);
	223	out2:
	224	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	225	out1:
	226	release_region (ioaddr, NE3210_IO_EXTENT);
	227	out:
	228	free_netdev (dev);
6aa20a22	229
1da177e4 LT	230	return retval;
	231	}
	232
	233	static int __devexit ne3210_eisa_remove (struct device *device)
	234	{
	235	struct net_device *dev = device->driver_data;
	236	unsigned long ioaddr = to_eisa_device (device)->base_addr;
	237
	238	unregister_netdev (dev);
	239	iounmap(ei_status.mem);
	240	release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
	241	free_irq (dev->irq, dev);
	242	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	243	release_region (ioaddr, NE3210_IO_EXTENT);
	244	free_netdev (dev);
	245
	246	return 0;
	247	}
	248
	249	/*
	250	* Reset by toggling the "Board Enable" bits (bit 2 and 0).
	251	*/
	252
	253	static void ne3210_reset_8390(struct net_device *dev)
	254	{
	255	unsigned short ioaddr = dev->base_addr;
	256
	257	outb(0x04, ioaddr + NE3210_RESET_PORT);
	258	if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
	259
	260	mdelay(2);
	261
	262	ei_status.txing = 0;
	263	outb(0x01, ioaddr + NE3210_RESET_PORT);
	264	if (ei_debug > 1) printk("reset done\n");
	265
	266	return;
	267	}
	268
	269	/*
	270	* Note: In the following three functions is the implicit assumption
	271	* that the associated memcpy will only use "rep; movsl" as long as
	272	* we keep the counts as some multiple of doublewords. This is a
	273	* requirement of the hardware, and also prevents us from using
	274	* eth_io_copy_and_sum() since we can't guarantee it will limit
	275	* itself to doubleword access.
	276	*/
	277
	278	/*
	279	* Grab the 8390 specific header. Similar to the block_input routine, but
	280	* we don't need to be concerned with ring wrap as the header will be at
	281	* the start of a page, so we optimize accordingly. (A single doubleword.)
	282	*/
	283
	284	static void
	285	ne3210_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	286	{
	287	void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
	288	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	289	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	290	}
	291
6aa20a22	292	/*
1da177e4 LT	293	* Block input and output are easy on shared memory ethercards, the only
	294	* complication is when the ring buffer wraps. The count will already
	295	* be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
	296	*/
	297
	298	static void ne3210_block_input(struct net_device dev, int count, struct sk_buff skb,
	299	int ring_offset)
	300	{
	301	void __iomem start = ei_status.mem + ring_offset - NE3210_START_PG256;
	302
	303	if (ring_offset + count > NE3210_STOP_PG*256) {
	304	/* Packet wraps over end of ring buffer. */
	305	int semi_count = NE3210_STOP_PG*256 - ring_offset;
	306	memcpy_fromio(skb->data, start, semi_count);
	307	count -= semi_count;
	308	memcpy_fromio(skb->data + semi_count,
	309	ei_status.mem + TX_PAGES*256, count);
	310	} else {
	311	/* Packet is in one chunk. */
	312	memcpy_fromio(skb->data, start, count);
	313	}
	314	}
	315
	316	static void ne3210_block_output(struct net_device *dev, int count,
	317	const unsigned char *buf, int start_page)
	318	{
	319	void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
	320
	321	count = (count + 3) & ~3; /* Round up to doubleword */
	322	memcpy_toio(shmem, buf, count);
	323	}
	324
	325	static int ne3210_open(struct net_device *dev)
	326	{
	327	ei_open(dev);
	328	return 0;
	329	}
	330
	331	static int ne3210_close(struct net_device *dev)
	332	{
	333
	334	if (ei_debug > 1)
	335	printk("%s: Shutting down ethercard.\n", dev->name);
	336
	337	ei_close(dev);
	338	return 0;
	339	}
	340
	341	static struct eisa_device_id ne3210_ids[] = {
	342	{ "EGL0101" },
	343	{ "NVL1801" },
	344	{ "" },
	345	};
07563c71	346	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
1da177e4 LT	347
	348	static struct eisa_driver ne3210_eisa_driver = {
	349	.id_table = ne3210_ids,
	350	.driver = {
	351	.name = "ne3210",
	352	.probe = ne3210_eisa_probe,
	353	.remove = __devexit_p (ne3210_eisa_remove),
	354	},
	355	};
	356
	357	MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
	358	MODULE_LICENSE("GPL");
	359	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
	360
9d8cc1b6	361	static int ne3210_init(void)
1da177e4 LT	362	{
	363	return eisa_driver_register (&ne3210_eisa_driver);
	364	}
	365
9d8cc1b6	366	static void ne3210_cleanup(void)
1da177e4 LT	367	{
	368	eisa_driver_unregister (&ne3210_eisa_driver);
	369	}
	370
	371	module_init (ne3210_init);
	372	module_exit (ne3210_cleanup);