[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_MODULE_OWNER(dev);
	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
109	SET_MODULE_OWNER(dev);
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
131
132	port_index = inb(ioaddr + NE3210_CFG2) >> 6;
133	printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr:",
134	edev->slot, ifmap[port_index]);
135	for(i = 0; i < ETHER_ADDR_LEN; i++)
136	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i)));
6aa20a22	137
1da177e4 LT	138
	139	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	140	dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
	141	printk(".\nne3210.c: using IRQ %d, ", dev->irq);
	142
	143	retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
	144	if (retval) {
	145	printk (" unable to get IRQ %d.\n", dev->irq);
	146	goto out2;
	147	}
	148
	149	phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
	150
	151	/*
	152	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	153	the card mem within the region covered by `normal' RAM !!!
	154	*/
	155	if (phys_mem > 10241024) { / phys addr > 1MB */
	156	if (phys_mem < virt_to_phys(high_memory)) {
	157	printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
	158	printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
	159	printk(KERN_CRIT "ne3210.c: or to an address above 0x%lx.\n", virt_to_phys(high_memory));
	160	printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
	161	retval = -EINVAL;
	162	goto out3;
	163	}
	164	}
6aa20a22	165
1da177e4 LT	166	if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
	167	printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
	168	phys_mem);
	169	goto out3;
	170	}
6aa20a22	171
1da177e4 LT	172	printk("%dkB memory at physical address %#lx\n",
	173	NE3210_STOP_PG/4, phys_mem);
	174
	175	ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
	176	if (!ei_status.mem) {
	177	printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
	178	printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
	179	retval = -EAGAIN;
	180	goto out4;
	181	}
	182	printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
	183	NE3210_STOP_PG/4, ei_status.mem);
	184	dev->mem_start = (unsigned long)ei_status.mem;
	185	dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
	186
	187	/* The 8390 offset is zero for the NE3210 */
	188	dev->base_addr = ioaddr;
	189
	190	ei_status.name = "NE3210";
	191	ei_status.tx_start_page = NE3210_START_PG;
	192	ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
	193	ei_status.stop_page = NE3210_STOP_PG;
	194	ei_status.word16 = 1;
	195	ei_status.priv = phys_mem;
	196
	197	if (ei_debug > 0)
9d8cc1b6	198	printk("ne3210 loaded.\n");
1da177e4 LT	199
	200	ei_status.reset_8390 = &ne3210_reset_8390;
	201	ei_status.block_input = &ne3210_block_input;
	202	ei_status.block_output = &ne3210_block_output;
	203	ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
	204
	205	dev->open = &ne3210_open;
	206	dev->stop = &ne3210_close;
	207	#ifdef CONFIG_NET_POLL_CONTROLLER
	208	dev->poll_controller = ei_poll;
	209	#endif
	210	dev->if_port = ifmap_val[port_index];
	211
	212	if ((retval = register_netdev (dev)))
	213	goto out5;
6aa20a22	214
1da177e4 LT	215	NS8390_init(dev, 0);
	216	return 0;
	217
	218	out5:
	219	iounmap(ei_status.mem);
	220	out4:
	221	release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
	222	out3:
	223	free_irq (dev->irq, dev);
	224	out2:
	225	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	226	out1:
	227	release_region (ioaddr, NE3210_IO_EXTENT);
	228	out:
	229	free_netdev (dev);
6aa20a22	230
1da177e4 LT	231	return retval;
	232	}
	233
	234	static int __devexit ne3210_eisa_remove (struct device *device)
	235	{
	236	struct net_device *dev = device->driver_data;
	237	unsigned long ioaddr = to_eisa_device (device)->base_addr;
	238
	239	unregister_netdev (dev);
	240	iounmap(ei_status.mem);
	241	release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
	242	free_irq (dev->irq, dev);
	243	release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
	244	release_region (ioaddr, NE3210_IO_EXTENT);
	245	free_netdev (dev);
	246
	247	return 0;
	248	}
	249
	250	/*
	251	* Reset by toggling the "Board Enable" bits (bit 2 and 0).
	252	*/
	253
	254	static void ne3210_reset_8390(struct net_device *dev)
	255	{
	256	unsigned short ioaddr = dev->base_addr;
	257
	258	outb(0x04, ioaddr + NE3210_RESET_PORT);
	259	if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
	260
	261	mdelay(2);
	262
	263	ei_status.txing = 0;
	264	outb(0x01, ioaddr + NE3210_RESET_PORT);
	265	if (ei_debug > 1) printk("reset done\n");
	266
	267	return;
	268	}
	269
	270	/*
	271	* Note: In the following three functions is the implicit assumption
	272	* that the associated memcpy will only use "rep; movsl" as long as
	273	* we keep the counts as some multiple of doublewords. This is a
	274	* requirement of the hardware, and also prevents us from using
	275	* eth_io_copy_and_sum() since we can't guarantee it will limit
	276	* itself to doubleword access.
	277	*/
	278
	279	/*
	280	* Grab the 8390 specific header. Similar to the block_input routine, but
	281	* we don't need to be concerned with ring wrap as the header will be at
	282	* the start of a page, so we optimize accordingly. (A single doubleword.)
	283	*/
	284
	285	static void
	286	ne3210_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	287	{
	288	void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
	289	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	290	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	291	}
	292
6aa20a22	293	/*
1da177e4 LT	294	* Block input and output are easy on shared memory ethercards, the only
	295	* complication is when the ring buffer wraps. The count will already
	296	* be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
	297	*/
	298
	299	static void ne3210_block_input(struct net_device dev, int count, struct sk_buff skb,
	300	int ring_offset)
	301	{
	302	void __iomem start = ei_status.mem + ring_offset - NE3210_START_PG256;
	303
	304	if (ring_offset + count > NE3210_STOP_PG*256) {
	305	/* Packet wraps over end of ring buffer. */
	306	int semi_count = NE3210_STOP_PG*256 - ring_offset;
	307	memcpy_fromio(skb->data, start, semi_count);
	308	count -= semi_count;
	309	memcpy_fromio(skb->data + semi_count,
	310	ei_status.mem + TX_PAGES*256, count);
	311	} else {
	312	/* Packet is in one chunk. */
	313	memcpy_fromio(skb->data, start, count);
	314	}
	315	}
	316
	317	static void ne3210_block_output(struct net_device *dev, int count,
	318	const unsigned char *buf, int start_page)
	319	{
	320	void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
	321
	322	count = (count + 3) & ~3; /* Round up to doubleword */
	323	memcpy_toio(shmem, buf, count);
	324	}
	325
	326	static int ne3210_open(struct net_device *dev)
	327	{
	328	ei_open(dev);
	329	return 0;
	330	}
	331
	332	static int ne3210_close(struct net_device *dev)
	333	{
	334
	335	if (ei_debug > 1)
	336	printk("%s: Shutting down ethercard.\n", dev->name);
	337
	338	ei_close(dev);
	339	return 0;
	340	}
	341
	342	static struct eisa_device_id ne3210_ids[] = {
	343	{ "EGL0101" },
	344	{ "NVL1801" },
	345	{ "" },
	346	};
07563c71	347	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
1da177e4 LT	348
	349	static struct eisa_driver ne3210_eisa_driver = {
	350	.id_table = ne3210_ids,
	351	.driver = {
	352	.name = "ne3210",
	353	.probe = ne3210_eisa_probe,
	354	.remove = __devexit_p (ne3210_eisa_remove),
	355	},
	356	};
	357
	358	MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
	359	MODULE_LICENSE("GPL");
	360	MODULE_DEVICE_TABLE(eisa, ne3210_ids);
	361
9d8cc1b6	362	static int ne3210_init(void)
1da177e4 LT	363	{
	364	return eisa_driver_register (&ne3210_eisa_driver);
	365	}
	366
9d8cc1b6	367	static void ne3210_cleanup(void)
1da177e4 LT	368	{
	369	eisa_driver_unregister (&ne3210_eisa_driver);
	370	}
	371
	372	module_init (ne3210_init);
	373	module_exit (ne3210_cleanup);