[deliverable/linux.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;
	DECLARE_MAC_BUF(mac);

	/* 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;
	for(i = 0; i < ETHER_ADDR_LEN; i++)
		dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i);
	printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %s.\n",
		edev->slot, ifmap[port_index], print_mac(mac, dev->dev_addr));

	/* 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("ne3210.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;
0795af57	102	DECLARE_MAC_BUF(mac);
1da177e4 LT	103
	104	/* Allocate dev->priv and fill in 8390 specific dev fields. */
	105	if (!(dev = alloc_ei_netdev ())) {
	106	printk ("ne3210.c: unable to allocate memory for dev!\n");
	107	return -ENOMEM;
	108	}
	109
1da177e4 LT	110	SET_NETDEV_DEV(dev, device);
	111	device->driver_data = dev;
	112	ioaddr = edev->base_addr;
	113
	114	if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
	115	retval = -EBUSY;
	116	goto out;
	117	}
	118
	119	if (!request_region(ioaddr + NE3210_CFG1,
	120	NE3210_CFG_EXTENT, DRV_NAME)) {
	121	retval = -EBUSY;
	122	goto out1;
	123	}
	124
	125	#if NE3210_DEBUG & NE3210_D_PROBE
	126	printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
	127	printk("ne3210-debug: config regs: %#x %#x\n",
	128	inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
	129	#endif
	130
1da177e4	131	port_index = inb(ioaddr + NE3210_CFG2) >> 6;
1da177e4	132	for(i = 0; i < ETHER_ADDR_LEN; i++)
0795af57 JP	133	dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i);
	134	printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %s.\n",
	135	edev->slot, ifmap[port_index], print_mac(mac, dev->dev_addr));
1da177e4 LT	136
	137	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	138	dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
0795af57	139	printk("ne3210.c: using IRQ %d, ", dev->irq);
1da177e4 LT	140
	141	retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
	142	if (retval) {
	143	printk (" unable to get IRQ %d.\n", dev->irq);
	144	goto out2;
	145	}
	146
	147	phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
	148
	149	/*
	150	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	151	the card mem within the region covered by `normal' RAM !!!
	152	*/
	153	if (phys_mem > 10241024) { / phys addr > 1MB */
	154	if (phys_mem < virt_to_phys(high_memory)) {
	155	printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
	156	printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
	157	printk(KERN_CRIT "ne3210.c: or to an address above 0x%lx.\n", virt_to_phys(high_memory));
	158	printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
	159	retval = -EINVAL;
	160	goto out3;
	161	}
	162	}
6aa20a22	163
1da177e4 LT	164	if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
	165	printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
	166	phys_mem);
	167	goto out3;
	168	}
6aa20a22	169
1da177e4 LT	170	printk("%dkB memory at physical address %#lx\n",
	171	NE3210_STOP_PG/4, phys_mem);
	172
	173	ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
	174	if (!ei_status.mem) {
	175	printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
	176	printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
	177	retval = -EAGAIN;
	178	goto out4;
	179	}
	180	printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
	181	NE3210_STOP_PG/4, ei_status.mem);
	182	dev->mem_start = (unsigned long)ei_status.mem;
	183	dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
	184
	185	/* The 8390 offset is zero for the NE3210 */
	186	dev->base_addr = ioaddr;
	187
	188	ei_status.name = "NE3210";
	189	ei_status.tx_start_page = NE3210_START_PG;
	190	ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
	191	ei_status.stop_page = NE3210_STOP_PG;
	192	ei_status.word16 = 1;
	193	ei_status.priv = phys_mem;
	194
	195	if (ei_debug > 0)
9d8cc1b6	196	printk("ne3210 loaded.\n");
1da177e4 LT	197
	198	ei_status.reset_8390 = &ne3210_reset_8390;
	199	ei_status.block_input = &ne3210_block_input;
	200	ei_status.block_output = &ne3210_block_output;
	201	ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
	202
	203	dev->open = &ne3210_open;
	204	dev->stop = &ne3210_close;
	205	#ifdef CONFIG_NET_POLL_CONTROLLER
	206	dev->poll_controller = ei_poll;
	207	#endif
	208	dev->if_port = ifmap_val[port_index];
	209
	210	if ((retval = register_netdev (dev)))
	211	goto out5;
6aa20a22	212
1da177e4 LT	213	NS8390_init(dev, 0);
	214	return 0;
	215
	216	out5:
	217	iounmap(ei_status.mem);
	218	out4:
	219	release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
	220	out3:
	221	free_irq (dev->irq, dev);
	222	out2:
	223	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	224	out1:
	225	release_region (ioaddr, NE3210_IO_EXTENT);
	226	out:
	227	free_netdev (dev);
6aa20a22	228
1da177e4 LT	229	return retval;
	230	}
	231
	232	static int __devexit ne3210_eisa_remove (struct device *device)
	233	{
	234	struct net_device *dev = device->driver_data;
	235	unsigned long ioaddr = to_eisa_device (device)->base_addr;
	236
	237	unregister_netdev (dev);
	238	iounmap(ei_status.mem);
	239	release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
	240	free_irq (dev->irq, dev);
	241	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	242	release_region (ioaddr, NE3210_IO_EXTENT);
	243	free_netdev (dev);
	244
	245	return 0;
	246	}
	247
	248	/*
	249	* Reset by toggling the "Board Enable" bits (bit 2 and 0).
	250	*/
	251
	252	static void ne3210_reset_8390(struct net_device *dev)
	253	{
	254	unsigned short ioaddr = dev->base_addr;
	255
	256	outb(0x04, ioaddr + NE3210_RESET_PORT);
	257	if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
	258
	259	mdelay(2);
	260
	261	ei_status.txing = 0;
	262	outb(0x01, ioaddr + NE3210_RESET_PORT);
	263	if (ei_debug > 1) printk("reset done\n");
	264
	265	return;
	266	}
	267
	268	/*
	269	* Note: In the following three functions is the implicit assumption
	270	* that the associated memcpy will only use "rep; movsl" as long as
	271	* we keep the counts as some multiple of doublewords. This is a
	272	* requirement of the hardware, and also prevents us from using
	273	* eth_io_copy_and_sum() since we can't guarantee it will limit
	274	* itself to doubleword access.
	275	*/
	276
	277	/*
	278	* Grab the 8390 specific header. Similar to the block_input routine, but
	279	* we don't need to be concerned with ring wrap as the header will be at
	280	* the start of a page, so we optimize accordingly. (A single doubleword.)
	281	*/
	282
	283	static void
	284	ne3210_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	285	{
	286	void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
	287	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	288	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	289	}
	290
6aa20a22	291	/*
1da177e4 LT	292	* Block input and output are easy on shared memory ethercards, the only
	293	* complication is when the ring buffer wraps. The count will already
	294	* be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
	295	*/
	296
	297	static void ne3210_block_input(struct net_device dev, int count, struct sk_buff skb,
	298	int ring_offset)
	299	{
	300	void __iomem start = ei_status.mem + ring_offset - NE3210_START_PG256;
	301
	302	if (ring_offset + count > NE3210_STOP_PG*256) {
	303	/* Packet wraps over end of ring buffer. */
	304	int semi_count = NE3210_STOP_PG*256 - ring_offset;
	305	memcpy_fromio(skb->data, start, semi_count);
	306	count -= semi_count;
	307	memcpy_fromio(skb->data + semi_count,
	308	ei_status.mem + TX_PAGES*256, count);
	309	} else {
	310	/* Packet is in one chunk. */
	311	memcpy_fromio(skb->data, start, count);
	312	}
	313	}
	314
	315	static void ne3210_block_output(struct net_device *dev, int count,
	316	const unsigned char *buf, int start_page)
	317	{
	318	void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
	319
	320	count = (count + 3) & ~3; /* Round up to doubleword */
	321	memcpy_toio(shmem, buf, count);
	322	}
	323
	324	static int ne3210_open(struct net_device *dev)
	325	{
	326	ei_open(dev);
	327	return 0;
	328	}
	329
	330	static int ne3210_close(struct net_device *dev)
	331	{
	332
	333	if (ei_debug > 1)
	334	printk("%s: Shutting down ethercard.\n", dev->name);
	335
	336	ei_close(dev);
	337	return 0;
	338	}
	339
	340	static struct eisa_device_id ne3210_ids[] = {
	341	{ "EGL0101" },
	342	{ "NVL1801" },
	343	{ "" },
	344	};
07563c71	345	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
1da177e4 LT	346
	347	static struct eisa_driver ne3210_eisa_driver = {
	348	.id_table = ne3210_ids,
	349	.driver = {
	350	.name = "ne3210",
	351	.probe = ne3210_eisa_probe,
	352	.remove = __devexit_p (ne3210_eisa_remove),
	353	},
	354	};
	355
	356	MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
	357	MODULE_LICENSE("GPL");
	358	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
	359
9d8cc1b6	360	static int ne3210_init(void)
1da177e4 LT	361	{
	362	return eisa_driver_register (&ne3210_eisa_driver);
	363	}
	364
9d8cc1b6	365	static void ne3210_cleanup(void)
1da177e4 LT	366	{
	367	eisa_driver_unregister (&ne3210_eisa_driver);
	368	}
	369
	370	module_init (ne3210_init);
	371	module_exit (ne3210_cleanup);