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1 /* smc-ultra.c: A SMC Ultra ethernet driver for linux. */
2 /*
3 	This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards.
4 
5 	Written 1993-1998 by Donald Becker.
6 
7 	Copyright 1993 United States Government as represented by the
8 	Director, National Security Agency.
9 
10 	This software may be used and distributed according to the terms
11 	of the GNU General Public License, incorporated herein by reference.
12 
13 	The author may be reached as becker@scyld.com, or C/O
14 	Scyld Computing Corporation
15 	410 Severn Ave., Suite 210
16 	Annapolis MD 21403
17 
18 	This driver uses the cards in the 8390-compatible mode.
19 	Most of the run-time complexity is handled by the generic code in
20 	8390.c.  The code in this file is responsible for
21 
22 		ultra_probe()	 	Detecting and initializing the card.
23 		ultra_probe1()
24 		ultra_probe_isapnp()
25 
26 		ultra_open()		The card-specific details of starting, stopping
27 		ultra_reset_8390()	and resetting the 8390 NIC core.
28 		ultra_close()
29 
30 		ultra_block_input()		Routines for reading and writing blocks of
31 		ultra_block_output()	packet buffer memory.
32 		ultra_pio_input()
33 		ultra_pio_output()
34 
35 	This driver enables the shared memory only when doing the actual data
36 	transfers to avoid a bug in early version of the card that corrupted
37 	data transferred by a AHA1542.
38 
39 	This driver now supports the programmed-I/O (PIO) data transfer mode of
40 	the EtherEZ. It does not use the non-8390-compatible "Altego" mode.
41 	That support (if available) is in smc-ez.c.
42 
43 	Changelog:
44 
45 	Paul Gortmaker	: multiple card support for module users.
46 	Donald Becker	: 4/17/96 PIO support, minor potential problems avoided.
47 	Donald Becker	: 6/6/96 correctly set auto-wrap bit.
48 	Alexander Sotirov : 1/20/01 Added support for ISAPnP cards
49 
50 	Note about the ISA PnP support:
51 
52 	This driver can not autoprobe for more than one SMC EtherEZ PnP card.
53 	You have to configure the second card manually through the /proc/isapnp
54 	interface and then load the module with an explicit io=0x___ option.
55 */
56 
57 static const char version[] =
58 	"smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
59 
60 #include <linux/module.h>
61 #include <linux/kernel.h>
62 #include <linux/errno.h>
63 #include <linux/string.h>
64 #include <linux/init.h>
65 #include <linux/interrupt.h>
66 #include <linux/isapnp.h>
67 #include <linux/netdevice.h>
68 #include <linux/etherdevice.h>
69 
70 #include <asm/io.h>
71 #include <asm/irq.h>
72 
73 #include "8390.h"
74 
75 #define DRV_NAME "smc-ultra"
76 
77 /* A zero-terminated list of I/O addresses to be probed. */
78 static unsigned int ultra_portlist[] __initdata =
79 {0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0};
80 
81 static int ultra_probe1(struct net_device *dev, int ioaddr);
82 
83 #ifdef __ISAPNP__
84 static int ultra_probe_isapnp(struct net_device *dev);
85 #endif
86 
87 static int ultra_open(struct net_device *dev);
88 static void ultra_reset_8390(struct net_device *dev);
89 static void ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
90 						int ring_page);
91 static void ultra_block_input(struct net_device *dev, int count,
92 						  struct sk_buff *skb, int ring_offset);
93 static void ultra_block_output(struct net_device *dev, int count,
94 							const unsigned char *buf, const int start_page);
95 static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
96 						int ring_page);
97 static void ultra_pio_input(struct net_device *dev, int count,
98 						  struct sk_buff *skb, int ring_offset);
99 static void ultra_pio_output(struct net_device *dev, int count,
100 							 const unsigned char *buf, const int start_page);
101 static int ultra_close_card(struct net_device *dev);
102 
103 #ifdef __ISAPNP__
104 static struct isapnp_device_id ultra_device_ids[] __initdata = {
105         {       ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
106                 ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
107                 (long) "SMC EtherEZ (8416)" },
108         { }	/* terminate list */
109 };
110 
111 MODULE_DEVICE_TABLE(isapnp, ultra_device_ids);
112 #endif
113 
114 static u32 ultra_msg_enable;
115 
116 #define START_PG		0x00	/* First page of TX buffer */
117 
118 #define ULTRA_CMDREG	0		/* Offset to ASIC command register. */
119 #define	 ULTRA_RESET	0x80	/* Board reset, in ULTRA_CMDREG. */
120 #define	 ULTRA_MEMENB	0x40	/* Enable the shared memory. */
121 #define IOPD	0x02			/* I/O Pipe Data (16 bits), PIO operation. */
122 #define IOPA	0x07			/* I/O Pipe Address for PIO operation. */
123 #define ULTRA_NIC_OFFSET  16	/* NIC register offset from the base_addr. */
124 #define ULTRA_IO_EXTENT 32
125 #define EN0_ERWCNT		0x08	/* Early receive warning count. */
126 
127 #ifdef CONFIG_NET_POLL_CONTROLLER
ultra_poll(struct net_device * dev)128 static void ultra_poll(struct net_device *dev)
129 {
130 	disable_irq(dev->irq);
131 	ei_interrupt(dev->irq, dev);
132 	enable_irq(dev->irq);
133 }
134 #endif
135 /*	Probe for the Ultra.  This looks like a 8013 with the station
136 	address PROM at I/O ports <base>+8 to <base>+13, with a checksum
137 	following.
138 */
139 
do_ultra_probe(struct net_device * dev)140 static int __init do_ultra_probe(struct net_device *dev)
141 {
142 	int i;
143 	int base_addr = dev->base_addr;
144 	int irq = dev->irq;
145 
146 	if (base_addr > 0x1ff)		/* Check a single specified location. */
147 		return ultra_probe1(dev, base_addr);
148 	else if (base_addr != 0)	/* Don't probe at all. */
149 		return -ENXIO;
150 
151 #ifdef __ISAPNP__
152 	/* Look for any installed ISAPnP cards */
153 	if (isapnp_present() && (ultra_probe_isapnp(dev) == 0))
154 		return 0;
155 #endif
156 
157 	for (i = 0; ultra_portlist[i]; i++) {
158 		dev->irq = irq;
159 		if (ultra_probe1(dev, ultra_portlist[i]) == 0)
160 			return 0;
161 	}
162 
163 	return -ENODEV;
164 }
165 
166 #ifndef MODULE
ultra_probe(int unit)167 struct net_device * __init ultra_probe(int unit)
168 {
169 	struct net_device *dev = alloc_ei_netdev();
170 	int err;
171 
172 	if (!dev)
173 		return ERR_PTR(-ENOMEM);
174 
175 	sprintf(dev->name, "eth%d", unit);
176 	netdev_boot_setup_check(dev);
177 
178 	err = do_ultra_probe(dev);
179 	if (err)
180 		goto out;
181 	return dev;
182 out:
183 	free_netdev(dev);
184 	return ERR_PTR(err);
185 }
186 #endif
187 
188 static const struct net_device_ops ultra_netdev_ops = {
189 	.ndo_open		= ultra_open,
190 	.ndo_stop		= ultra_close_card,
191 
192 	.ndo_start_xmit		= ei_start_xmit,
193 	.ndo_tx_timeout		= ei_tx_timeout,
194 	.ndo_get_stats		= ei_get_stats,
195 	.ndo_set_rx_mode	= ei_set_multicast_list,
196 	.ndo_validate_addr	= eth_validate_addr,
197 	.ndo_set_mac_address 	= eth_mac_addr,
198 	.ndo_change_mtu		= eth_change_mtu,
199 #ifdef CONFIG_NET_POLL_CONTROLLER
200 	.ndo_poll_controller 	= ultra_poll,
201 #endif
202 };
203 
ultra_probe1(struct net_device * dev,int ioaddr)204 static int __init ultra_probe1(struct net_device *dev, int ioaddr)
205 {
206 	int i, retval;
207 	int checksum = 0;
208 	const char *model_name;
209 	unsigned char eeprom_irq = 0;
210 	static unsigned version_printed;
211 	/* Values from various config regs. */
212 	unsigned char num_pages, irqreg, addr, piomode;
213 	unsigned char idreg = inb(ioaddr + 7);
214 	unsigned char reg4 = inb(ioaddr + 4) & 0x7f;
215 	struct ei_device *ei_local = netdev_priv(dev);
216 
217 	if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME))
218 		return -EBUSY;
219 
220 	/* Check the ID nibble. */
221 	if ((idreg & 0xF0) != 0x20 			/* SMC Ultra */
222 		&& (idreg & 0xF0) != 0x40) {		/* SMC EtherEZ */
223 		retval = -ENODEV;
224 		goto out;
225 	}
226 
227 	/* Select the station address register set. */
228 	outb(reg4, ioaddr + 4);
229 
230 	for (i = 0; i < 8; i++)
231 		checksum += inb(ioaddr + 8 + i);
232 	if ((checksum & 0xff) != 0xFF) {
233 		retval = -ENODEV;
234 		goto out;
235 	}
236 
237 	if ((ultra_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
238 		netdev_info(dev, version);
239 
240 	model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ";
241 
242 	for (i = 0; i < 6; i++)
243 		dev->dev_addr[i] = inb(ioaddr + 8 + i);
244 
245 	netdev_info(dev, "%s at %#3x, %pM", model_name,
246 		    ioaddr, dev->dev_addr);
247 
248 	/* Switch from the station address to the alternate register set and
249 	   read the useful registers there. */
250 	outb(0x80 | reg4, ioaddr + 4);
251 
252 	/* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
253 	outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
254 	piomode = inb(ioaddr + 0x8);
255 	addr = inb(ioaddr + 0xb);
256 	irqreg = inb(ioaddr + 0xd);
257 
258 	/* Switch back to the station address register set so that the MS-DOS driver
259 	   can find the card after a warm boot. */
260 	outb(reg4, ioaddr + 4);
261 
262 	if (dev->irq < 2) {
263 		unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
264 		int irq;
265 
266 		/* The IRQ bits are split. */
267 		irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];
268 
269 		if (irq == 0) {
270 			pr_cont(", failed to detect IRQ line.\n");
271 			retval =  -EAGAIN;
272 			goto out;
273 		}
274 		dev->irq = irq;
275 		eeprom_irq = 1;
276 	}
277 
278 	/* The 8390 isn't at the base address, so fake the offset */
279 	dev->base_addr = ioaddr+ULTRA_NIC_OFFSET;
280 
281 	{
282 		static const int addr_tbl[4] = {
283 			0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000
284 		};
285 		static const short num_pages_tbl[4] = {
286 			0x20, 0x40, 0x80, 0xff
287 		};
288 
289 		dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ;
290 		num_pages = num_pages_tbl[(addr >> 4) & 3];
291 	}
292 
293 	ei_status.name = model_name;
294 	ei_status.word16 = 1;
295 	ei_status.tx_start_page = START_PG;
296 	ei_status.rx_start_page = START_PG + TX_PAGES;
297 	ei_status.stop_page = num_pages;
298 
299 	ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG)*256);
300 	if (!ei_status.mem) {
301 		pr_cont(", failed to ioremap.\n");
302 		retval =  -ENOMEM;
303 		goto out;
304 	}
305 
306 	dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256;
307 
308 	if (piomode) {
309 		pr_cont(", %s IRQ %d programmed-I/O mode.\n",
310 			eeprom_irq ? "EEPROM" : "assigned ", dev->irq);
311 		ei_status.block_input = &ultra_pio_input;
312 		ei_status.block_output = &ultra_pio_output;
313 		ei_status.get_8390_hdr = &ultra_pio_get_hdr;
314 	} else {
315 		pr_cont(", %s IRQ %d memory %#lx-%#lx.\n",
316 			eeprom_irq ? "" : "assigned ", dev->irq, dev->mem_start,
317 			dev->mem_end-1);
318 		ei_status.block_input = &ultra_block_input;
319 		ei_status.block_output = &ultra_block_output;
320 		ei_status.get_8390_hdr = &ultra_get_8390_hdr;
321 	}
322 	ei_status.reset_8390 = &ultra_reset_8390;
323 
324 	dev->netdev_ops = &ultra_netdev_ops;
325 	NS8390_init(dev, 0);
326 	ei_local->msg_enable = ultra_msg_enable;
327 
328 	retval = register_netdev(dev);
329 	if (retval)
330 		goto out;
331 	return 0;
332 out:
333 	release_region(ioaddr, ULTRA_IO_EXTENT);
334 	return retval;
335 }
336 
337 #ifdef __ISAPNP__
ultra_probe_isapnp(struct net_device * dev)338 static int __init ultra_probe_isapnp(struct net_device *dev)
339 {
340         int i;
341 
342         for (i = 0; ultra_device_ids[i].vendor != 0; i++) {
343 		struct pnp_dev *idev = NULL;
344 
345                 while ((idev = pnp_find_dev(NULL,
346                                             ultra_device_ids[i].vendor,
347                                             ultra_device_ids[i].function,
348                                             idev))) {
349                         /* Avoid already found cards from previous calls */
350                         if (pnp_device_attach(idev) < 0)
351                         	continue;
352                         if (pnp_activate_dev(idev) < 0) {
353                               __again:
354                         	pnp_device_detach(idev);
355                         	continue;
356                         }
357 			/* if no io and irq, search for next */
358 			if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0))
359 				goto __again;
360                         /* found it */
361 			dev->base_addr = pnp_port_start(idev, 0);
362 			dev->irq = pnp_irq(idev, 0);
363 			netdev_info(dev,
364 				    "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
365 				    (char *) ultra_device_ids[i].driver_data,
366 				    dev->base_addr, dev->irq);
367                         if (ultra_probe1(dev, dev->base_addr) != 0) {      /* Shouldn't happen. */
368 				netdev_err(dev,
369 					   "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n",
370 					   dev->base_addr);
371 				pnp_device_detach(idev);
372 				return -ENXIO;
373                         }
374                         ei_status.priv = (unsigned long)idev;
375                         break;
376                 }
377                 if (!idev)
378                         continue;
379                 return 0;
380         }
381 
382         return -ENODEV;
383 }
384 #endif
385 
386 static int
ultra_open(struct net_device * dev)387 ultra_open(struct net_device *dev)
388 {
389 	int retval;
390 	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
391 	unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40,
392 				   0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, };
393 
394 	retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
395 	if (retval)
396 		return retval;
397 
398 	outb(0x00, ioaddr);	/* Disable shared memory for safety. */
399 	outb(0x80, ioaddr + 5);
400 	/* Set the IRQ line. */
401 	outb(inb(ioaddr + 4) | 0x80, ioaddr + 4);
402 	outb((inb(ioaddr + 13) & ~0x4C) | irq2reg[dev->irq], ioaddr + 13);
403 	outb(inb(ioaddr + 4) & 0x7f, ioaddr + 4);
404 
405 	if (ei_status.block_input == &ultra_pio_input) {
406 		outb(0x11, ioaddr + 6);		/* Enable interrupts and PIO. */
407 		outb(0x01, ioaddr + 0x19);  	/* Enable ring read auto-wrap. */
408 	} else
409 		outb(0x01, ioaddr + 6);		/* Enable interrupts and memory. */
410 	/* Set the early receive warning level in window 0 high enough not
411 	   to receive ERW interrupts. */
412 	outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
413 	outb(0xff, dev->base_addr + EN0_ERWCNT);
414 	ei_open(dev);
415 	return 0;
416 }
417 
418 static void
ultra_reset_8390(struct net_device * dev)419 ultra_reset_8390(struct net_device *dev)
420 {
421 	int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */
422 	struct ei_device *ei_local = netdev_priv(dev);
423 
424 	outb(ULTRA_RESET, cmd_port);
425 	netif_dbg(ei_local, hw, dev, "resetting Ultra, t=%ld...\n", jiffies);
426 	ei_status.txing = 0;
427 
428 	outb(0x00, cmd_port);	/* Disable shared memory for safety. */
429 	outb(0x80, cmd_port + 5);
430 	if (ei_status.block_input == &ultra_pio_input)
431 		outb(0x11, cmd_port + 6);		/* Enable interrupts and PIO. */
432 	else
433 		outb(0x01, cmd_port + 6);		/* Enable interrupts and memory. */
434 
435 	netif_dbg(ei_local, hw, dev, "reset done\n");
436 }
437 
438 /* Grab the 8390 specific header. Similar to the block_input routine, but
439    we don't need to be concerned with ring wrap as the header will be at
440    the start of a page, so we optimize accordingly. */
441 
442 static void
ultra_get_8390_hdr(struct net_device * dev,struct e8390_pkt_hdr * hdr,int ring_page)443 ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
444 {
445 	void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8);
446 
447 	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);	/* shmem on */
448 #ifdef __BIG_ENDIAN
449 	/* Officially this is what we are doing, but the readl() is faster */
450 	/* unfortunately it isn't endian aware of the struct               */
451 	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
452 	hdr->count = le16_to_cpu(hdr->count);
453 #else
454 	((unsigned int*)hdr)[0] = readl(hdr_start);
455 #endif
456 	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */
457 }
458 
459 /* Block input and output are easy on shared memory ethercards, the only
460    complication is when the ring buffer wraps. */
461 
462 static void
ultra_block_input(struct net_device * dev,int count,struct sk_buff * skb,int ring_offset)463 ultra_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
464 {
465 	void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8);
466 
467 	/* Enable shared memory. */
468 	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
469 
470 	if (ring_offset + count > ei_status.stop_page*256) {
471 		/* We must wrap the input move. */
472 		int semi_count = ei_status.stop_page*256 - ring_offset;
473 		memcpy_fromio(skb->data, xfer_start, semi_count);
474 		count -= semi_count;
475 		memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
476 	} else {
477 		memcpy_fromio(skb->data, xfer_start, count);
478 	}
479 
480 	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET);	/* Disable memory. */
481 }
482 
483 static void
ultra_block_output(struct net_device * dev,int count,const unsigned char * buf,int start_page)484 ultra_block_output(struct net_device *dev, int count, const unsigned char *buf,
485 				int start_page)
486 {
487 	void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8);
488 
489 	/* Enable shared memory. */
490 	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
491 
492 	memcpy_toio(shmem, buf, count);
493 
494 	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
495 }
496 
497 /* The identical operations for programmed I/O cards.
498    The PIO model is trivial to use: the 16 bit start address is written
499    byte-sequentially to IOPA, with no intervening I/O operations, and the
500    data is read or written to the IOPD data port.
501    The only potential complication is that the address register is shared
502    and must be always be rewritten between each read/write direction change.
503    This is no problem for us, as the 8390 code ensures that we are single
504    threaded. */
ultra_pio_get_hdr(struct net_device * dev,struct e8390_pkt_hdr * hdr,int ring_page)505 static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
506 						int ring_page)
507 {
508 	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
509 	outb(0x00, ioaddr + IOPA);	/* Set the address, LSB first. */
510 	outb(ring_page, ioaddr + IOPA);
511 	insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1);
512 }
513 
ultra_pio_input(struct net_device * dev,int count,struct sk_buff * skb,int ring_offset)514 static void ultra_pio_input(struct net_device *dev, int count,
515 						  struct sk_buff *skb, int ring_offset)
516 {
517 	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
518     char *buf = skb->data;
519 
520 	/* For now set the address again, although it should already be correct. */
521 	outb(ring_offset, ioaddr + IOPA);	/* Set the address, LSB first. */
522 	outb(ring_offset >> 8, ioaddr + IOPA);
523 	/* We know skbuffs are padded to at least word alignment. */
524 	insw(ioaddr + IOPD, buf, (count+1)>>1);
525 }
526 
ultra_pio_output(struct net_device * dev,int count,const unsigned char * buf,const int start_page)527 static void ultra_pio_output(struct net_device *dev, int count,
528 							const unsigned char *buf, const int start_page)
529 {
530 	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
531 	outb(0x00, ioaddr + IOPA);	/* Set the address, LSB first. */
532 	outb(start_page, ioaddr + IOPA);
533 	/* An extra odd byte is OK here as well. */
534 	outsw(ioaddr + IOPD, buf, (count+1)>>1);
535 }
536 
537 static int
ultra_close_card(struct net_device * dev)538 ultra_close_card(struct net_device *dev)
539 {
540 	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */
541 	struct ei_device *ei_local = netdev_priv(dev);
542 
543 	netif_stop_queue(dev);
544 
545 	netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
546 
547 	outb(0x00, ioaddr + 6);		/* Disable interrupts. */
548 	free_irq(dev->irq, dev);
549 
550 	NS8390_init(dev, 0);
551 
552 	/* We should someday disable shared memory and change to 8-bit mode
553 	   "just in case"... */
554 
555 	return 0;
556 }
557 
558 
559 #ifdef MODULE
560 #define MAX_ULTRA_CARDS	4	/* Max number of Ultra cards per module */
561 static struct net_device *dev_ultra[MAX_ULTRA_CARDS];
562 static int io[MAX_ULTRA_CARDS];
563 static int irq[MAX_ULTRA_CARDS];
564 
565 module_param_array(io, int, NULL, 0);
566 module_param_array(irq, int, NULL, 0);
567 module_param_named(msg_enable, ultra_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
568 MODULE_PARM_DESC(io, "I/O base address(es)");
569 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
570 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
571 MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver");
572 MODULE_LICENSE("GPL");
573 
574 /* This is set up so that only a single autoprobe takes place per call.
575 ISA device autoprobes on a running machine are not recommended. */
576 int __init
init_module(void)577 init_module(void)
578 {
579 	struct net_device *dev;
580 	int this_dev, found = 0;
581 
582 	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
583 		if (io[this_dev] == 0)  {
584 			if (this_dev != 0) break; /* only autoprobe 1st one */
585 			printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n");
586 		}
587 		dev = alloc_ei_netdev();
588 		if (!dev)
589 			break;
590 		dev->irq = irq[this_dev];
591 		dev->base_addr = io[this_dev];
592 		if (do_ultra_probe(dev) == 0) {
593 			dev_ultra[found++] = dev;
594 			continue;
595 		}
596 		free_netdev(dev);
597 		printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
598 		break;
599 	}
600 	if (found)
601 		return 0;
602 	return -ENXIO;
603 }
604 
cleanup_card(struct net_device * dev)605 static void cleanup_card(struct net_device *dev)
606 {
607 	/* NB: ultra_close_card() does free_irq */
608 #ifdef __ISAPNP__
609 	struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
610 	if (idev)
611 		pnp_device_detach(idev);
612 #endif
613 	release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT);
614 	iounmap(ei_status.mem);
615 }
616 
617 void __exit
cleanup_module(void)618 cleanup_module(void)
619 {
620 	int this_dev;
621 
622 	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
623 		struct net_device *dev = dev_ultra[this_dev];
624 		if (dev) {
625 			unregister_netdev(dev);
626 			cleanup_card(dev);
627 			free_netdev(dev);
628 		}
629 	}
630 }
631 #endif /* MODULE */
632