[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 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);
	dev_set_drvdata(device, 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: %pM.\n",
		edev->slot, ifmap[port_index], 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%llx.\n",
				(u64)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->netdev_ops = &ei_netdev_ops;

	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    = dev_get_drvdata(device);
	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 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
1da177e4 LT	48	static void ne3210_reset_8390(struct net_device *dev);
	49
	50	static void ne3210_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page);
	51	static void ne3210_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset);
	52	static void ne3210_block_output(struct net_device dev, int count, const unsigned char buf, const int start_page);
	53
	54	#define NE3210_START_PG 0x00 /* First page of TX buffer */
	55	#define NE3210_STOP_PG 0x80 /* Last page +1 of RX ring */
	56
	57	#define NE3210_IO_EXTENT 0x20
	58	#define NE3210_SA_PROM 0x16 /* Start of e'net addr. */
	59	#define NE3210_RESET_PORT 0xc84
	60	#define NE3210_NIC_OFFSET 0x00 /* Hello, the 8390 is here */
	61
	62	#define NE3210_ADDR0 0x00 /* 3 byte vendor prefix */
	63	#define NE3210_ADDR1 0x00
	64	#define NE3210_ADDR2 0x1b
	65
	66	#define NE3210_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
	67	#define NE3210_CFG2 0xc90
	68	#define NE3210_CFG_EXTENT (NE3210_CFG2 - NE3210_CFG1 + 1)
	69
	70	/*
	71	* You can OR any of the following bits together and assign it
	72	* to NE3210_DEBUG to get verbose driver info during operation.
	73	* Currently only the probe one is implemented.
	74	*/
	75
	76	#define NE3210_D_PROBE 0x01
	77	#define NE3210_D_RX_PKT 0x02
	78	#define NE3210_D_TX_PKT 0x04
	79	#define NE3210_D_IRQ 0x08
	80
	81	#define NE3210_DEBUG 0x0
	82
	83	static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
	84	static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
	85	static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
	86	static int ifmap_val[] __initdata = {
	87	IF_PORT_10BASET,
	88	IF_PORT_UNKNOWN,
	89	IF_PORT_10BASE2,
	90	IF_PORT_AUI,
	91	};
	92
	93	static int __init ne3210_eisa_probe (struct device *device)
	94	{
	95	unsigned long ioaddr, phys_mem;
	96	int i, retval, port_index;
	97	struct eisa_device *edev = to_eisa_device (device);
	98	struct net_device *dev;
	99
	100	/* Allocate dev->priv and fill in 8390 specific dev fields. */
	101	if (!(dev = alloc_ei_netdev ())) {
	102	printk ("ne3210.c: unable to allocate memory for dev!\n");
	103	return -ENOMEM;
	104	}
	105
1da177e4	106	SET_NETDEV_DEV(dev, device);
1aec5bdf	107	dev_set_drvdata(device, dev);
1da177e4 LT	108	ioaddr = edev->base_addr;
	109
	110	if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
	111	retval = -EBUSY;
	112	goto out;
	113	}
	114
	115	if (!request_region(ioaddr + NE3210_CFG1,
	116	NE3210_CFG_EXTENT, DRV_NAME)) {
	117	retval = -EBUSY;
	118	goto out1;
	119	}
	120
	121	#if NE3210_DEBUG & NE3210_D_PROBE
	122	printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
	123	printk("ne3210-debug: config regs: %#x %#x\n",
	124	inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
	125	#endif
	126
1da177e4	127	port_index = inb(ioaddr + NE3210_CFG2) >> 6;
1da177e4	128	for(i = 0; i < ETHER_ADDR_LEN; i++)
0795af57	129	dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i);
e174961c JB	130	printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %pM.\n",
e174961c JB	131	edev->slot, ifmap[port_index], dev->dev_addr);
1da177e4 LT	132
	133	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	134	dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
0795af57	135	printk("ne3210.c: using IRQ %d, ", dev->irq);
1da177e4 LT	136
	137	retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
	138	if (retval) {
	139	printk (" unable to get IRQ %d.\n", dev->irq);
	140	goto out2;
	141	}
	142
	143	phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
	144
	145	/*
	146	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	147	the card mem within the region covered by `normal' RAM !!!
	148	*/
	149	if (phys_mem > 10241024) { / phys addr > 1MB */
	150	if (phys_mem < virt_to_phys(high_memory)) {
	151	printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
	152	printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
76a85639 JSR	153	printk(KERN_CRIT "ne3210.c: or to an address above 0x%llx.\n",
76a85639 JSR	154	(u64)virt_to_phys(high_memory));
1da177e4 LT	155	printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
	156	retval = -EINVAL;
	157	goto out3;
	158	}
	159	}
6aa20a22	160
1da177e4 LT	161	if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
	162	printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
	163	phys_mem);
	164	goto out3;
	165	}
6aa20a22	166
1da177e4 LT	167	printk("%dkB memory at physical address %#lx\n",
	168	NE3210_STOP_PG/4, phys_mem);
	169
	170	ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
	171	if (!ei_status.mem) {
	172	printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
	173	printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
	174	retval = -EAGAIN;
	175	goto out4;
	176	}
	177	printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
	178	NE3210_STOP_PG/4, ei_status.mem);
	179	dev->mem_start = (unsigned long)ei_status.mem;
	180	dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
	181
	182	/* The 8390 offset is zero for the NE3210 */
	183	dev->base_addr = ioaddr;
	184
	185	ei_status.name = "NE3210";
	186	ei_status.tx_start_page = NE3210_START_PG;
	187	ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
	188	ei_status.stop_page = NE3210_STOP_PG;
	189	ei_status.word16 = 1;
	190	ei_status.priv = phys_mem;
	191
	192	if (ei_debug > 0)
9d8cc1b6	193	printk("ne3210 loaded.\n");
1da177e4 LT	194
	195	ei_status.reset_8390 = &ne3210_reset_8390;
	196	ei_status.block_input = &ne3210_block_input;
	197	ei_status.block_output = &ne3210_block_output;
	198	ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
	199
d269941b SH	200	dev->netdev_ops = &ei_netdev_ops;
d269941b SH	201
1da177e4 LT	202	dev->if_port = ifmap_val[port_index];
	203
	204	if ((retval = register_netdev (dev)))
	205	goto out5;
6aa20a22	206
1da177e4 LT	207	NS8390_init(dev, 0);
	208	return 0;
	209
	210	out5:
	211	iounmap(ei_status.mem);
	212	out4:
	213	release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
	214	out3:
	215	free_irq (dev->irq, dev);
	216	out2:
	217	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	218	out1:
	219	release_region (ioaddr, NE3210_IO_EXTENT);
	220	out:
	221	free_netdev (dev);
6aa20a22	222
1da177e4 LT	223	return retval;
	224	}
	225
	226	static int __devexit ne3210_eisa_remove (struct device *device)
	227	{
1aec5bdf	228	struct net_device *dev = dev_get_drvdata(device);
1da177e4 LT	229	unsigned long ioaddr = to_eisa_device (device)->base_addr;
	230
	231	unregister_netdev (dev);
	232	iounmap(ei_status.mem);
	233	release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
	234	free_irq (dev->irq, dev);
	235	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	236	release_region (ioaddr, NE3210_IO_EXTENT);
	237	free_netdev (dev);
	238
	239	return 0;
	240	}
	241
	242	/*
	243	* Reset by toggling the "Board Enable" bits (bit 2 and 0).
	244	*/
	245
	246	static void ne3210_reset_8390(struct net_device *dev)
	247	{
	248	unsigned short ioaddr = dev->base_addr;
	249
	250	outb(0x04, ioaddr + NE3210_RESET_PORT);
	251	if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
	252
	253	mdelay(2);
	254
	255	ei_status.txing = 0;
	256	outb(0x01, ioaddr + NE3210_RESET_PORT);
	257	if (ei_debug > 1) printk("reset done\n");
	258
	259	return;
	260	}
	261
	262	/*
	263	* Note: In the following three functions is the implicit assumption
	264	* that the associated memcpy will only use "rep; movsl" as long as
	265	* we keep the counts as some multiple of doublewords. This is a
	266	* requirement of the hardware, and also prevents us from using
	267	* eth_io_copy_and_sum() since we can't guarantee it will limit
	268	* itself to doubleword access.
	269	*/
	270
	271	/*
	272	* Grab the 8390 specific header. Similar to the block_input routine, but
	273	* we don't need to be concerned with ring wrap as the header will be at
	274	* the start of a page, so we optimize accordingly. (A single doubleword.)
	275	*/
	276
	277	static void
	278	ne3210_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	279	{
	280	void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
	281	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	282	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	283	}
	284
6aa20a22	285	/*
1da177e4 LT	286	* Block input and output are easy on shared memory ethercards, the only
	287	* complication is when the ring buffer wraps. The count will already
	288	* be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
	289	*/
	290
	291	static void ne3210_block_input(struct net_device dev, int count, struct sk_buff skb,
	292	int ring_offset)
	293	{
	294	void __iomem start = ei_status.mem + ring_offset - NE3210_START_PG256;
	295
	296	if (ring_offset + count > NE3210_STOP_PG*256) {
	297	/* Packet wraps over end of ring buffer. */
	298	int semi_count = NE3210_STOP_PG*256 - ring_offset;
	299	memcpy_fromio(skb->data, start, semi_count);
	300	count -= semi_count;
	301	memcpy_fromio(skb->data + semi_count,
	302	ei_status.mem + TX_PAGES*256, count);
	303	} else {
	304	/* Packet is in one chunk. */
	305	memcpy_fromio(skb->data, start, count);
	306	}
	307	}
	308
	309	static void ne3210_block_output(struct net_device *dev, int count,
	310	const unsigned char *buf, int start_page)
	311	{
	312	void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
	313
	314	count = (count + 3) & ~3; /* Round up to doubleword */
	315	memcpy_toio(shmem, buf, count);
	316	}
	317
1da177e4 LT	318	static struct eisa_device_id ne3210_ids[] = {
	319	{ "EGL0101" },
	320	{ "NVL1801" },
	321	{ "" },
	322	};
07563c71	323	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
1da177e4 LT	324
	325	static struct eisa_driver ne3210_eisa_driver = {
	326	.id_table = ne3210_ids,
	327	.driver = {
	328	.name = "ne3210",
	329	.probe = ne3210_eisa_probe,
	330	.remove = __devexit_p (ne3210_eisa_remove),
	331	},
	332	};
	333
	334	MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
	335	MODULE_LICENSE("GPL");
	336	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
	337
9d8cc1b6	338	static int ne3210_init(void)
1da177e4 LT	339	{
	340	return eisa_driver_register (&ne3210_eisa_driver);
	341	}
	342
9d8cc1b6	343	static void ne3210_cleanup(void)
1da177e4 LT	344	{
	345	eisa_driver_unregister (&ne3210_eisa_driver);
	346	}
	347
	348	module_init (ne3210_init);
	349	module_exit (ne3210_cleanup);