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1 /*
2  * ni6510 (am7990 'lance' chip) driver for Linux-net-3
3  * BETAcode v0.71 (96/09/29) for 2.0.0 (or later)
4  * copyrights (c) 1994,1995,1996 by M.Hipp
5  *
6  * This driver can handle the old ni6510 board and the newer ni6510
7  * EtherBlaster. (probably it also works with every full NE2100
8  * compatible card)
9  *
10  * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7
11  *
12  * This is an extension to the Linux operating system, and is covered by the
13  * same GNU General Public License that covers the Linux-kernel.
14  *
15  * comments/bugs/suggestions can be sent to:
16  *   Michael Hipp
17  *   email: hippm@informatik.uni-tuebingen.de
18  *
19  * sources:
20  *   some things are from the 'ni6510-packet-driver for dos by Russ Nelson'
21  *   and from the original drivers by D.Becker
22  *
23  * known problems:
24  *   - on some PCI boards (including my own) the card/board/ISA-bridge has
25  *     problems with bus master DMA. This results in lotsa overruns.
26  *     It may help to '#define RCV_PARANOIA_CHECK' or try to #undef
27  *     the XMT and RCV_VIA_SKB option .. this reduces driver performance.
28  *     Or just play with your BIOS options to optimize ISA-DMA access.
29  *     Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE
30  *     defines -> please report me your experience then
31  *   - Harald reported for ASUS SP3G mainboards, that you should use
32  *     the 'optimal settings' from the user's manual on page 3-12!
33  *
34  * credits:
35  *   thanx to Jason Sullivan for sending me a ni6510 card!
36  *   lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig
37  *
38  * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB)
39  *    average: FTP -> 8384421 bytes received in 8.5 seconds
40  *           (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS)
41  *    peak: FTP -> 8384421 bytes received in 7.5 seconds
42  *           (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS)
43  */
44 
45 /*
46  * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK)
47  * 96.Sept.29: virt_to_bus stuff added for new memory modell
48  * 96.April.29: Added Harald Koenig's Patches (MH)
49  * 96.April.13: enhanced error handling .. more tests (MH)
50  * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH)
51  * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH)
52  * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH)
53  *            hopefully no more 16MB limit
54  *
55  * 95.Nov.18: multicast tweaked (AC).
56  *
57  * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
58  *
59  * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff  (MH)
60  */
61 
62 #include <linux/kernel.h>
63 #include <linux/string.h>
64 #include <linux/errno.h>
65 #include <linux/ioport.h>
66 #include <linux/slab.h>
67 #include <linux/interrupt.h>
68 #include <linux/delay.h>
69 #include <linux/init.h>
70 #include <linux/netdevice.h>
71 #include <linux/etherdevice.h>
72 #include <linux/skbuff.h>
73 #include <linux/module.h>
74 #include <linux/bitops.h>
75 
76 #include <asm/io.h>
77 #include <asm/dma.h>
78 
79 #include "ni65.h"
80 
81 /*
82  * the current setting allows an acceptable performance
83  * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in
84  * the header of this file
85  * 'invert' the defines for max. performance. This may cause DMA problems
86  * on some boards (e.g on my ASUS SP3G)
87  */
88 #undef XMT_VIA_SKB
89 #undef RCV_VIA_SKB
90 #define RCV_PARANOIA_CHECK
91 
92 #define MID_PERFORMANCE
93 
94 #if   defined( LOW_PERFORMANCE )
95  static int isa0=7,isa1=7,csr80=0x0c10;
96 #elif defined( MID_PERFORMANCE )
97  static int isa0=5,isa1=5,csr80=0x2810;
98 #else	/* high performance */
99  static int isa0=4,isa1=4,csr80=0x0017;
100 #endif
101 
102 /*
103  * a few card/vendor specific defines
104  */
105 #define NI65_ID0    0x00
106 #define NI65_ID1    0x55
107 #define NI65_EB_ID0 0x52
108 #define NI65_EB_ID1 0x44
109 #define NE2100_ID0  0x57
110 #define NE2100_ID1  0x57
111 
112 #define PORT p->cmdr_addr
113 
114 /*
115  * buffer configuration
116  */
117 #if 1
118 #define RMDNUM 16
119 #define RMDNUMMASK 0x80000000
120 #else
121 #define RMDNUM 8
122 #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */
123 #endif
124 
125 #if 0
126 #define TMDNUM 1
127 #define TMDNUMMASK 0x00000000
128 #else
129 #define TMDNUM 4
130 #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */
131 #endif
132 
133 /* slightly oversized */
134 #define R_BUF_SIZE 1544
135 #define T_BUF_SIZE 1544
136 
137 /*
138  * lance register defines
139  */
140 #define L_DATAREG 0x00
141 #define L_ADDRREG 0x02
142 #define L_RESET   0x04
143 #define L_CONFIG  0x05
144 #define L_BUSIF   0x06
145 
146 /*
147  * to access the lance/am7990-regs, you have to write
148  * reg-number into L_ADDRREG, then you can access it using L_DATAREG
149  */
150 #define CSR0  0x00
151 #define CSR1  0x01
152 #define CSR2  0x02
153 #define CSR3  0x03
154 
155 #define INIT_RING_BEFORE_START	0x1
156 #define FULL_RESET_ON_ERROR	0x2
157 
158 #if 0
159 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
160                            outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
161 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
162                        inw(PORT+L_DATAREG))
163 #if 0
164 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
165 #else
166 #define writedatareg(val) {  writereg(val,CSR0); }
167 #endif
168 #else
169 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);}
170 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG))
171 #define writedatareg(val) { writereg(val,CSR0); }
172 #endif
173 
174 static unsigned char ni_vendor[] = { 0x02,0x07,0x01 };
175 
176 static struct card {
177 	unsigned char id0,id1;
178 	short id_offset;
179 	short total_size;
180 	short cmd_offset;
181 	short addr_offset;
182 	unsigned char *vendor_id;
183 	char *cardname;
184 	unsigned long config;
185 } cards[] = {
186 	{
187 		.id0	     = NI65_ID0,
188 		.id1	     = NI65_ID1,
189 		.id_offset   = 0x0e,
190 		.total_size  = 0x10,
191 		.cmd_offset  = 0x0,
192 		.addr_offset = 0x8,
193 		.vendor_id   = ni_vendor,
194 		.cardname    = "ni6510",
195 		.config	     = 0x1,
196        	},
197 	{
198 		.id0	     = NI65_EB_ID0,
199 		.id1	     = NI65_EB_ID1,
200 		.id_offset   = 0x0e,
201 		.total_size  = 0x18,
202 		.cmd_offset  = 0x10,
203 		.addr_offset = 0x0,
204 		.vendor_id   = ni_vendor,
205 		.cardname    = "ni6510 EtherBlaster",
206 		.config	     = 0x2,
207        	},
208 	{
209 		.id0	     = NE2100_ID0,
210 		.id1	     = NE2100_ID1,
211 		.id_offset   = 0x0e,
212 		.total_size  = 0x18,
213 		.cmd_offset  = 0x10,
214 		.addr_offset = 0x0,
215 		.vendor_id   = NULL,
216 		.cardname    = "generic NE2100",
217 		.config	     = 0x0,
218 	},
219 };
220 #define NUM_CARDS 3
221 
222 struct priv
223 {
224 	struct rmd rmdhead[RMDNUM];
225 	struct tmd tmdhead[TMDNUM];
226 	struct init_block ib;
227 	int rmdnum;
228 	int tmdnum,tmdlast;
229 #ifdef RCV_VIA_SKB
230 	struct sk_buff *recv_skb[RMDNUM];
231 #else
232 	void *recvbounce[RMDNUM];
233 #endif
234 #ifdef XMT_VIA_SKB
235 	struct sk_buff *tmd_skb[TMDNUM];
236 #endif
237 	void *tmdbounce[TMDNUM];
238 	int tmdbouncenum;
239 	int lock,xmit_queued;
240 	struct net_device_stats stats;
241 	void *self;
242 	int cmdr_addr;
243 	int cardno;
244 	int features;
245 	spinlock_t ring_lock;
246 };
247 
248 static int  ni65_probe1(struct net_device *dev,int);
249 static irqreturn_t ni65_interrupt(int irq, void * dev_id);
250 static void ni65_recv_intr(struct net_device *dev,int);
251 static void ni65_xmit_intr(struct net_device *dev,int);
252 static int  ni65_open(struct net_device *dev);
253 static int  ni65_lance_reinit(struct net_device *dev);
254 static void ni65_init_lance(struct priv *p,unsigned char*,int,int);
255 static int  ni65_send_packet(struct sk_buff *skb, struct net_device *dev);
256 static void  ni65_timeout(struct net_device *dev);
257 static int  ni65_close(struct net_device *dev);
258 static int  ni65_alloc_buffer(struct net_device *dev);
259 static void ni65_free_buffer(struct priv *p);
260 static struct net_device_stats *ni65_get_stats(struct net_device *);
261 static void set_multicast_list(struct net_device *dev);
262 
263 static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */
264 static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */
265 
266 static int debuglevel = 1;
267 
268 /*
269  * set 'performance' registers .. we must STOP lance for that
270  */
ni65_set_performance(struct priv * p)271 static void ni65_set_performance(struct priv *p)
272 {
273 	writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */
274 
275 	if( !(cards[p->cardno].config & 0x02) )
276 		return;
277 
278 	outw(80,PORT+L_ADDRREG);
279 	if(inw(PORT+L_ADDRREG) != 80)
280 		return;
281 
282 	writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */
283 	outw(0,PORT+L_ADDRREG);
284 	outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */
285 	outw(1,PORT+L_ADDRREG);
286 	outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns	*/
287 
288 	outw(CSR0,PORT+L_ADDRREG);	/* switch back to CSR0 */
289 }
290 
291 /*
292  * open interface (up)
293  */
ni65_open(struct net_device * dev)294 static int ni65_open(struct net_device *dev)
295 {
296 	struct priv *p = dev->ml_priv;
297 	int irqval = request_irq(dev->irq, &ni65_interrupt,0,
298                         cards[p->cardno].cardname,dev);
299 	if (irqval) {
300 		printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n",
301 		          dev->name,dev->irq, irqval);
302 		return -EAGAIN;
303 	}
304 
305 	if(ni65_lance_reinit(dev))
306 	{
307 		netif_start_queue(dev);
308 		return 0;
309 	}
310 	else
311 	{
312 		free_irq(dev->irq,dev);
313 		return -EAGAIN;
314 	}
315 }
316 
317 /*
318  * close interface (down)
319  */
ni65_close(struct net_device * dev)320 static int ni65_close(struct net_device *dev)
321 {
322 	struct priv *p = dev->ml_priv;
323 
324 	netif_stop_queue(dev);
325 
326 	outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */
327 
328 #ifdef XMT_VIA_SKB
329 	{
330 		int i;
331 		for(i=0;i<TMDNUM;i++)
332 		{
333 			if(p->tmd_skb[i]) {
334 				dev_kfree_skb(p->tmd_skb[i]);
335 				p->tmd_skb[i] = NULL;
336 			}
337 		}
338 	}
339 #endif
340 	free_irq(dev->irq,dev);
341 	return 0;
342 }
343 
cleanup_card(struct net_device * dev)344 static void cleanup_card(struct net_device *dev)
345 {
346 	struct priv *p = dev->ml_priv;
347 	disable_dma(dev->dma);
348 	free_dma(dev->dma);
349 	release_region(dev->base_addr, cards[p->cardno].total_size);
350 	ni65_free_buffer(p);
351 }
352 
353 /* set: io,irq,dma or set it when calling insmod */
354 static int irq;
355 static int io;
356 static int dma;
357 
358 /*
359  * Probe The Card (not the lance-chip)
360  */
ni65_probe(int unit)361 struct net_device * __init ni65_probe(int unit)
362 {
363 	struct net_device *dev = alloc_etherdev(0);
364 	static int ports[] = {0x360,0x300,0x320,0x340, 0};
365 	int *port;
366 	int err = 0;
367 
368 	if (!dev)
369 		return ERR_PTR(-ENOMEM);
370 
371 	if (unit >= 0) {
372 		sprintf(dev->name, "eth%d", unit);
373 		netdev_boot_setup_check(dev);
374 		irq = dev->irq;
375 		dma = dev->dma;
376 	} else {
377 		dev->base_addr = io;
378 	}
379 
380 	if (dev->base_addr > 0x1ff) { /* Check a single specified location. */
381 		err = ni65_probe1(dev, dev->base_addr);
382 	} else if (dev->base_addr > 0) { /* Don't probe at all. */
383 		err = -ENXIO;
384 	} else {
385 		for (port = ports; *port && ni65_probe1(dev, *port); port++)
386 			;
387 		if (!*port)
388 			err = -ENODEV;
389 	}
390 	if (err)
391 		goto out;
392 
393 	err = register_netdev(dev);
394 	if (err)
395 		goto out1;
396 	return dev;
397 out1:
398 	cleanup_card(dev);
399 out:
400 	free_netdev(dev);
401 	return ERR_PTR(err);
402 }
403 
404 /*
405  * this is the real card probe ..
406  */
ni65_probe1(struct net_device * dev,int ioaddr)407 static int __init ni65_probe1(struct net_device *dev,int ioaddr)
408 {
409 	int i,j;
410 	struct priv *p;
411 	unsigned long flags;
412 
413 	dev->irq = irq;
414 	dev->dma = dma;
415 
416 	for(i=0;i<NUM_CARDS;i++) {
417 		if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname))
418 			continue;
419 		if(cards[i].id_offset >= 0) {
420 			if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 ||
421 				 inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) {
422 				 release_region(ioaddr, cards[i].total_size);
423 				 continue;
424 			}
425 		}
426 		if(cards[i].vendor_id) {
427 			for(j=0;j<3;j++)
428 				if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) {
429 					release_region(ioaddr, cards[i].total_size);
430 					continue;
431 			  }
432 		}
433 		break;
434 	}
435 	if(i == NUM_CARDS)
436 		return -ENODEV;
437 
438 	for(j=0;j<6;j++)
439 		dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j);
440 
441 	if( (j=ni65_alloc_buffer(dev)) < 0) {
442 		release_region(ioaddr, cards[i].total_size);
443 		return j;
444 	}
445 	p = dev->ml_priv;
446 	p->cmdr_addr = ioaddr + cards[i].cmd_offset;
447 	p->cardno = i;
448 	spin_lock_init(&p->ring_lock);
449 
450 	printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr);
451 
452 	outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
453 	if( (j=readreg(CSR0)) != 0x4) {
454 		 printk("failed.\n");
455 		 printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j);
456 		 ni65_free_buffer(p);
457 		 release_region(ioaddr, cards[p->cardno].total_size);
458 		 return -EAGAIN;
459 	}
460 
461 	outw(88,PORT+L_ADDRREG);
462 	if(inw(PORT+L_ADDRREG) == 88) {
463 		unsigned long v;
464 		v = inw(PORT+L_DATAREG);
465 		v <<= 16;
466 		outw(89,PORT+L_ADDRREG);
467 		v |= inw(PORT+L_DATAREG);
468 		printk("Version %#08lx, ",v);
469 		p->features = INIT_RING_BEFORE_START;
470 	}
471 	else {
472 		printk("ancient LANCE, ");
473 		p->features = 0x0;
474 	}
475 
476 	if(test_bit(0,&cards[i].config)) {
477 		dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3];
478 		dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3];
479 		printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma);
480 	}
481 	else {
482 		if(dev->dma == 0) {
483 		/* 'stuck test' from lance.c */
484 			long dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) |
485 					    (inb(DMA2_STAT_REG) & 0xf0);
486 			for(i=1;i<5;i++) {
487 				int dma = dmatab[i];
488 				if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))
489 					continue;
490 
491 				flags=claim_dma_lock();
492 				disable_dma(dma);
493 				set_dma_mode(dma,DMA_MODE_CASCADE);
494 				enable_dma(dma);
495 				release_dma_lock(flags);
496 
497 				ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */
498 
499 				flags=claim_dma_lock();
500 				disable_dma(dma);
501 				free_dma(dma);
502 				release_dma_lock(flags);
503 
504 				if(readreg(CSR0) & CSR0_IDON)
505 					break;
506 			}
507 			if(i == 5) {
508 				printk("failed.\n");
509 				printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name);
510 				ni65_free_buffer(p);
511 				release_region(ioaddr, cards[p->cardno].total_size);
512 				return -EAGAIN;
513 			}
514 			dev->dma = dmatab[i];
515 			printk("DMA %d (autodetected), ",dev->dma);
516 		}
517 		else
518 			printk("DMA %d (assigned), ",dev->dma);
519 
520 		if(dev->irq < 2)
521 		{
522 			unsigned long irq_mask;
523 
524 			ni65_init_lance(p,dev->dev_addr,0,0);
525 			irq_mask = probe_irq_on();
526 			writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */
527 			msleep(20);
528 			dev->irq = probe_irq_off(irq_mask);
529 			if(!dev->irq)
530 			{
531 				printk("Failed to detect IRQ line!\n");
532 				ni65_free_buffer(p);
533 				release_region(ioaddr, cards[p->cardno].total_size);
534 				return -EAGAIN;
535 			}
536 			printk("IRQ %d (autodetected).\n",dev->irq);
537 		}
538 		else
539 			printk("IRQ %d (assigned).\n",dev->irq);
540 	}
541 
542 	if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0)
543 	{
544 		printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
545 		ni65_free_buffer(p);
546 		release_region(ioaddr, cards[p->cardno].total_size);
547 		return -EAGAIN;
548 	}
549 
550 	dev->base_addr = ioaddr;
551 	dev->open		= ni65_open;
552 	dev->stop		= ni65_close;
553 	dev->hard_start_xmit	= ni65_send_packet;
554 	dev->tx_timeout		= ni65_timeout;
555 	dev->watchdog_timeo	= HZ/2;
556 	dev->get_stats		= ni65_get_stats;
557 	dev->set_multicast_list = set_multicast_list;
558 	return 0; /* everything is OK */
559 }
560 
561 /*
562  * set lance register and trigger init
563  */
ni65_init_lance(struct priv * p,unsigned char * daddr,int filter,int mode)564 static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode)
565 {
566 	int i;
567 	u32 pib;
568 
569 	writereg(CSR0_CLRALL|CSR0_STOP,CSR0);
570 
571 	for(i=0;i<6;i++)
572 		p->ib.eaddr[i] = daddr[i];
573 
574 	for(i=0;i<8;i++)
575 		p->ib.filter[i] = filter;
576 	p->ib.mode = mode;
577 
578 	p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK;
579 	p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK;
580 	writereg(0,CSR3);	/* busmaster/no word-swap */
581 	pib = (u32) isa_virt_to_bus(&p->ib);
582 	writereg(pib & 0xffff,CSR1);
583 	writereg(pib >> 16,CSR2);
584 
585 	writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
586 
587 	for(i=0;i<32;i++)
588 	{
589 		mdelay(4);
590 		if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) )
591 			break; /* init ok ? */
592 	}
593 }
594 
595 /*
596  * allocate memory area and check the 16MB border
597  */
ni65_alloc_mem(struct net_device * dev,char * what,int size,int type)598 static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type)
599 {
600 	struct sk_buff *skb=NULL;
601 	unsigned char *ptr;
602 	void *ret;
603 
604 	if(type) {
605 		ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA);
606 		if(!skb) {
607 			printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
608 			return NULL;
609 		}
610 		skb_reserve(skb,2+16);
611 		skb_put(skb,R_BUF_SIZE);	 /* grab the whole space .. (not necessary) */
612 		ptr = skb->data;
613 	}
614 	else {
615 		ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA);
616 		if(!ret) {
617 			printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what);
618 			return NULL;
619 		}
620 	}
621 	if( (u32) virt_to_phys(ptr+size) > 0x1000000) {
622 		printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what);
623 		if(type)
624 			kfree_skb(skb);
625 		else
626 			kfree(ptr);
627 		return NULL;
628 	}
629 	return ret;
630 }
631 
632 /*
633  * allocate all memory structures .. send/recv buffers etc ...
634  */
ni65_alloc_buffer(struct net_device * dev)635 static int ni65_alloc_buffer(struct net_device *dev)
636 {
637 	unsigned char *ptr;
638 	struct priv *p;
639 	int i;
640 
641 	/*
642 	 * we need 8-aligned memory ..
643 	 */
644 	ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0);
645 	if(!ptr)
646 		return -ENOMEM;
647 
648 	p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
649 	memset((char *)p, 0, sizeof(struct priv));
650 	p->self = ptr;
651 
652 	for(i=0;i<TMDNUM;i++)
653 	{
654 #ifdef XMT_VIA_SKB
655 		p->tmd_skb[i] = NULL;
656 #endif
657 		p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
658 		if(!p->tmdbounce[i]) {
659 			ni65_free_buffer(p);
660 			return -ENOMEM;
661 		}
662 	}
663 
664 	for(i=0;i<RMDNUM;i++)
665 	{
666 #ifdef RCV_VIA_SKB
667 		p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
668 		if(!p->recv_skb[i]) {
669 			ni65_free_buffer(p);
670 			return -ENOMEM;
671 		}
672 #else
673 		p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
674 		if(!p->recvbounce[i]) {
675 			ni65_free_buffer(p);
676 			return -ENOMEM;
677 		}
678 #endif
679 	}
680 
681 	return 0; /* everything is OK */
682 }
683 
684 /*
685  * free buffers and private struct
686  */
ni65_free_buffer(struct priv * p)687 static void ni65_free_buffer(struct priv *p)
688 {
689 	int i;
690 
691 	if(!p)
692 		return;
693 
694 	for(i=0;i<TMDNUM;i++) {
695 		kfree(p->tmdbounce[i]);
696 #ifdef XMT_VIA_SKB
697 		if(p->tmd_skb[i])
698 			dev_kfree_skb(p->tmd_skb[i]);
699 #endif
700 	}
701 
702 	for(i=0;i<RMDNUM;i++)
703 	{
704 #ifdef RCV_VIA_SKB
705 		if(p->recv_skb[i])
706 			dev_kfree_skb(p->recv_skb[i]);
707 #else
708 		kfree(p->recvbounce[i]);
709 #endif
710 	}
711 	kfree(p->self);
712 }
713 
714 
715 /*
716  * stop and (re)start lance .. e.g after an error
717  */
ni65_stop_start(struct net_device * dev,struct priv * p)718 static void ni65_stop_start(struct net_device *dev,struct priv *p)
719 {
720 	int csr0 = CSR0_INEA;
721 
722 	writedatareg(CSR0_STOP);
723 
724 	if(debuglevel > 1)
725 		printk(KERN_DEBUG "ni65_stop_start\n");
726 
727 	if(p->features & INIT_RING_BEFORE_START) {
728 		int i;
729 #ifdef XMT_VIA_SKB
730 		struct sk_buff *skb_save[TMDNUM];
731 #endif
732 		unsigned long buffer[TMDNUM];
733 		short blen[TMDNUM];
734 
735 		if(p->xmit_queued) {
736 			while(1) {
737 				if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN))
738 					break;
739 				p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
740 				if(p->tmdlast == p->tmdnum)
741 					break;
742 			}
743 		}
744 
745 		for(i=0;i<TMDNUM;i++) {
746 			struct tmd *tmdp = p->tmdhead + i;
747 #ifdef XMT_VIA_SKB
748 			skb_save[i] = p->tmd_skb[i];
749 #endif
750 			buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer);
751 			blen[i] = tmdp->blen;
752 			tmdp->u.s.status = 0x0;
753 		}
754 
755 		for(i=0;i<RMDNUM;i++) {
756 			struct rmd *rmdp = p->rmdhead + i;
757 			rmdp->u.s.status = RCV_OWN;
758 		}
759 		p->tmdnum = p->xmit_queued = 0;
760 		writedatareg(CSR0_STRT | csr0);
761 
762 		for(i=0;i<TMDNUM;i++) {
763 			int num = (i + p->tmdlast) & (TMDNUM-1);
764 			p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */
765 			p->tmdhead[i].blen = blen[num];
766 			if(p->tmdhead[i].u.s.status & XMIT_OWN) {
767 				 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
768 				 p->xmit_queued = 1;
769 	 writedatareg(CSR0_TDMD | CSR0_INEA | csr0);
770 			}
771 #ifdef XMT_VIA_SKB
772 			p->tmd_skb[i] = skb_save[num];
773 #endif
774 		}
775 		p->rmdnum = p->tmdlast = 0;
776 		if(!p->lock)
777 			if (p->tmdnum || !p->xmit_queued)
778 				netif_wake_queue(dev);
779 		dev->trans_start = jiffies;
780 	}
781 	else
782 		writedatareg(CSR0_STRT | csr0);
783 }
784 
785 /*
786  * init lance (write init-values .. init-buffers) (open-helper)
787  */
ni65_lance_reinit(struct net_device * dev)788 static int ni65_lance_reinit(struct net_device *dev)
789 {
790 	 int i;
791 	 struct priv *p = dev->ml_priv;
792 	 unsigned long flags;
793 
794 	 p->lock = 0;
795 	 p->xmit_queued = 0;
796 
797 	 flags=claim_dma_lock();
798 	 disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
799 	 set_dma_mode(dev->dma,DMA_MODE_CASCADE);
800 	 enable_dma(dev->dma);
801 	 release_dma_lock(flags);
802 
803 	 outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
804 	 if( (i=readreg(CSR0) ) != 0x4)
805 	 {
806 		 printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name,
807 							cards[p->cardno].cardname,(int) i);
808 		 flags=claim_dma_lock();
809 		 disable_dma(dev->dma);
810 		 release_dma_lock(flags);
811 		 return 0;
812 	 }
813 
814 	 p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0;
815 	 for(i=0;i<TMDNUM;i++)
816 	 {
817 		 struct tmd *tmdp = p->tmdhead + i;
818 #ifdef XMT_VIA_SKB
819 		 if(p->tmd_skb[i]) {
820 			 dev_kfree_skb(p->tmd_skb[i]);
821 			 p->tmd_skb[i] = NULL;
822 		 }
823 #endif
824 		 tmdp->u.buffer = 0x0;
825 		 tmdp->u.s.status = XMIT_START | XMIT_END;
826 		 tmdp->blen = tmdp->status2 = 0;
827 	 }
828 
829 	 for(i=0;i<RMDNUM;i++)
830 	 {
831 		 struct rmd *rmdp = p->rmdhead + i;
832 #ifdef RCV_VIA_SKB
833 		 rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data);
834 #else
835 		 rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]);
836 #endif
837 		 rmdp->blen = -(R_BUF_SIZE-8);
838 		 rmdp->mlen = 0;
839 		 rmdp->u.s.status = RCV_OWN;
840 	 }
841 
842 	 if(dev->flags & IFF_PROMISC)
843 		 ni65_init_lance(p,dev->dev_addr,0x00,M_PROM);
844 	 else if(dev->mc_count || dev->flags & IFF_ALLMULTI)
845 		 ni65_init_lance(p,dev->dev_addr,0xff,0x0);
846 	 else
847 		 ni65_init_lance(p,dev->dev_addr,0x00,0x00);
848 
849 	/*
850 	 * ni65_set_lance_mem() sets L_ADDRREG to CSR0
851 	 * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED
852 	 */
853 
854 	 if(inw(PORT+L_DATAREG) & CSR0_IDON)	{
855 		 ni65_set_performance(p);
856 					 /* init OK: start lance , enable interrupts */
857 		 writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT);
858 		 return 1; /* ->OK */
859 	 }
860 	 printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
861 	 flags=claim_dma_lock();
862 	 disable_dma(dev->dma);
863 	 release_dma_lock(flags);
864 	 return 0; /* ->Error */
865 }
866 
867 /*
868  * interrupt handler
869  */
ni65_interrupt(int irq,void * dev_id)870 static irqreturn_t ni65_interrupt(int irq, void * dev_id)
871 {
872 	int csr0 = 0;
873 	struct net_device *dev = dev_id;
874 	struct priv *p;
875 	int bcnt = 32;
876 
877 	p = dev->ml_priv;
878 
879 	spin_lock(&p->ring_lock);
880 
881 	while(--bcnt) {
882 		csr0 = inw(PORT+L_DATAREG);
883 
884 #if 0
885 		writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */
886 #else
887 		writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */
888 #endif
889 
890 		if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT)))
891 			break;
892 
893 		if(csr0 & CSR0_RINT) /* RECV-int? */
894 			ni65_recv_intr(dev,csr0);
895 		if(csr0 & CSR0_TINT) /* XMIT-int? */
896 			ni65_xmit_intr(dev,csr0);
897 
898 		if(csr0 & CSR0_ERR)
899 		{
900 			struct priv *p = dev->ml_priv;
901 			if(debuglevel > 1)
902 				printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0);
903 			if(csr0 & CSR0_BABL)
904 				p->stats.tx_errors++;
905 			if(csr0 & CSR0_MISS) {
906 				int i;
907 				for(i=0;i<RMDNUM;i++)
908 					printk("%02x ",p->rmdhead[i].u.s.status);
909 				printk("\n");
910 				p->stats.rx_errors++;
911 			}
912 			if(csr0 & CSR0_MERR) {
913 				if(debuglevel > 1)
914 					printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0);
915 				ni65_stop_start(dev,p);
916 			}
917 		}
918 	}
919 
920 #ifdef RCV_PARANOIA_CHECK
921 {
922  int j;
923  for(j=0;j<RMDNUM;j++)
924  {
925 	struct priv *p = dev->ml_priv;
926 	int i,k,num1,num2;
927 	for(i=RMDNUM-1;i>0;i--) {
928 		 num2 = (p->rmdnum + i) & (RMDNUM-1);
929 		 if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
930 				break;
931 	}
932 
933 	if(i) {
934 		for(k=0;k<RMDNUM;k++) {
935 			num1 = (p->rmdnum + k) & (RMDNUM-1);
936 			if(!(p->rmdhead[num1].u.s.status & RCV_OWN))
937 				break;
938 		}
939 		if(!k)
940 			break;
941 
942 		if(debuglevel > 0)
943 		{
944 			char buf[256],*buf1;
945 			int k;
946 			buf1 = buf;
947 			for(k=0;k<RMDNUM;k++) {
948 				sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */
949 				buf1 += 3;
950 			}
951 			*buf1 = 0;
952 			printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf);
953 		}
954 
955 		p->rmdnum = num1;
956 		ni65_recv_intr(dev,csr0);
957 		if((p->rmdhead[num2].u.s.status & RCV_OWN))
958 			break;	/* ok, we are 'in sync' again */
959 	}
960 	else
961 		break;
962  }
963 }
964 #endif
965 
966 	if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
967 		printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name);
968 		ni65_stop_start(dev,p);
969 	}
970 	else
971 		writedatareg(CSR0_INEA);
972 
973 	spin_unlock(&p->ring_lock);
974 	return IRQ_HANDLED;
975 }
976 
977 /*
978  * We have received an Xmit-Interrupt ..
979  * send a new packet if necessary
980  */
ni65_xmit_intr(struct net_device * dev,int csr0)981 static void ni65_xmit_intr(struct net_device *dev,int csr0)
982 {
983 	struct priv *p = dev->ml_priv;
984 
985 	while(p->xmit_queued)
986 	{
987 		struct tmd *tmdp = p->tmdhead + p->tmdlast;
988 		int tmdstat = tmdp->u.s.status;
989 
990 		if(tmdstat & XMIT_OWN)
991 			break;
992 
993 		if(tmdstat & XMIT_ERR)
994 		{
995 #if 0
996 			if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3)
997 				printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name);
998 #endif
999 		 /* checking some errors */
1000 			if(tmdp->status2 & XMIT_RTRY)
1001 				p->stats.tx_aborted_errors++;
1002 			if(tmdp->status2 & XMIT_LCAR)
1003 				p->stats.tx_carrier_errors++;
1004 			if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) {
1005 		/* this stops the xmitter */
1006 				p->stats.tx_fifo_errors++;
1007 				if(debuglevel > 0)
1008 					printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name);
1009 				if(p->features & INIT_RING_BEFORE_START) {
1010 					tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;	/* test: resend this frame */
1011 					ni65_stop_start(dev,p);
1012 					break;	/* no more Xmit processing .. */
1013 				}
1014 				else
1015 				 ni65_stop_start(dev,p);
1016 			}
1017 			if(debuglevel > 2)
1018 				printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2);
1019 			if(!(csr0 & CSR0_BABL)) /* don't count errors twice */
1020 				p->stats.tx_errors++;
1021 			tmdp->status2 = 0;
1022 		}
1023 		else {
1024 			p->stats.tx_bytes -= (short)(tmdp->blen);
1025 			p->stats.tx_packets++;
1026 		}
1027 
1028 #ifdef XMT_VIA_SKB
1029 		if(p->tmd_skb[p->tmdlast]) {
1030 			 dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]);
1031 			 p->tmd_skb[p->tmdlast] = NULL;
1032 		}
1033 #endif
1034 
1035 		p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
1036 		if(p->tmdlast == p->tmdnum)
1037 			p->xmit_queued = 0;
1038 	}
1039 	netif_wake_queue(dev);
1040 }
1041 
1042 /*
1043  * We have received a packet
1044  */
ni65_recv_intr(struct net_device * dev,int csr0)1045 static void ni65_recv_intr(struct net_device *dev,int csr0)
1046 {
1047 	struct rmd *rmdp;
1048 	int rmdstat,len;
1049 	int cnt=0;
1050 	struct priv *p = dev->ml_priv;
1051 
1052 	rmdp = p->rmdhead + p->rmdnum;
1053 	while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
1054 	{
1055 		cnt++;
1056 		if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */
1057 		{
1058 			if(!(rmdstat & RCV_ERR)) {
1059 				if(rmdstat & RCV_START)
1060 				{
1061 					p->stats.rx_length_errors++;
1062 					printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff);
1063 				}
1064 			}
1065 			else {
1066 				if(debuglevel > 2)
1067 					printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n",
1068 									dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) );
1069 				if(rmdstat & RCV_FRAM)
1070 					p->stats.rx_frame_errors++;
1071 				if(rmdstat & RCV_OFLO)
1072 					p->stats.rx_over_errors++;
1073 				if(rmdstat & RCV_CRC)
1074 					p->stats.rx_crc_errors++;
1075 				if(rmdstat & RCV_BUF_ERR)
1076 					p->stats.rx_fifo_errors++;
1077 			}
1078 			if(!(csr0 & CSR0_MISS)) /* don't count errors twice */
1079 				p->stats.rx_errors++;
1080 		}
1081 		else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60)
1082 		{
1083 #ifdef RCV_VIA_SKB
1084 			struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC);
1085 			if (skb)
1086 				skb_reserve(skb,16);
1087 #else
1088 			struct sk_buff *skb = dev_alloc_skb(len+2);
1089 #endif
1090 			if(skb)
1091 			{
1092 				skb_reserve(skb,2);
1093 #ifdef RCV_VIA_SKB
1094 				if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) {
1095 					skb_put(skb,len);
1096 					skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len);
1097 				}
1098 				else {
1099 					struct sk_buff *skb1 = p->recv_skb[p->rmdnum];
1100 					skb_put(skb,R_BUF_SIZE);
1101 					p->recv_skb[p->rmdnum] = skb;
1102 					rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1103 					skb = skb1;
1104 					skb_trim(skb,len);
1105 				}
1106 #else
1107 				skb_put(skb,len);
1108 				skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len);
1109 #endif
1110 				p->stats.rx_packets++;
1111 				p->stats.rx_bytes += len;
1112 				skb->protocol=eth_type_trans(skb,dev);
1113 				netif_rx(skb);
1114 			}
1115 			else
1116 			{
1117 				printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name);
1118 				p->stats.rx_dropped++;
1119 			}
1120 		}
1121 		else {
1122 			printk(KERN_INFO "%s: received runt packet\n",dev->name);
1123 			p->stats.rx_errors++;
1124 		}
1125 		rmdp->blen = -(R_BUF_SIZE-8);
1126 		rmdp->mlen = 0;
1127 		rmdp->u.s.status = RCV_OWN; /* change owner */
1128 		p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1);
1129 		rmdp = p->rmdhead + p->rmdnum;
1130 	}
1131 }
1132 
1133 /*
1134  * kick xmitter ..
1135  */
1136 
ni65_timeout(struct net_device * dev)1137 static void ni65_timeout(struct net_device *dev)
1138 {
1139 	int i;
1140 	struct priv *p = dev->ml_priv;
1141 
1142 	printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name);
1143 	for(i=0;i<TMDNUM;i++)
1144 		printk("%02x ",p->tmdhead[i].u.s.status);
1145 	printk("\n");
1146 	ni65_lance_reinit(dev);
1147 	dev->trans_start = jiffies;
1148 	netif_wake_queue(dev);
1149 }
1150 
1151 /*
1152  *	Send a packet
1153  */
1154 
ni65_send_packet(struct sk_buff * skb,struct net_device * dev)1155 static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev)
1156 {
1157 	struct priv *p = dev->ml_priv;
1158 
1159 	netif_stop_queue(dev);
1160 
1161 	if (test_and_set_bit(0, (void*)&p->lock)) {
1162 		printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
1163 		return 1;
1164 	}
1165 
1166 	{
1167 		short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1168 		struct tmd *tmdp;
1169 		unsigned long flags;
1170 
1171 #ifdef XMT_VIA_SKB
1172 		if( (unsigned long) (skb->data + skb->len) > 0x1000000) {
1173 #endif
1174 
1175 			skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum],
1176 				      skb->len > T_BUF_SIZE ? T_BUF_SIZE :
1177 							      skb->len);
1178 			if (len > skb->len)
1179 				memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len);
1180 			dev_kfree_skb (skb);
1181 
1182 			spin_lock_irqsave(&p->ring_lock, flags);
1183 			tmdp = p->tmdhead + p->tmdnum;
1184 			tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]);
1185 			p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1);
1186 
1187 #ifdef XMT_VIA_SKB
1188 		}
1189 		else {
1190 			spin_lock_irqsave(&p->ring_lock, flags);
1191 
1192 			tmdp = p->tmdhead + p->tmdnum;
1193 			tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data);
1194 			p->tmd_skb[p->tmdnum] = skb;
1195 		}
1196 #endif
1197 		tmdp->blen = -len;
1198 
1199 		tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
1200 		writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
1201 
1202 		p->xmit_queued = 1;
1203 		p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
1204 
1205 		if(p->tmdnum != p->tmdlast)
1206 			netif_wake_queue(dev);
1207 
1208 		p->lock = 0;
1209 		dev->trans_start = jiffies;
1210 
1211 		spin_unlock_irqrestore(&p->ring_lock, flags);
1212 	}
1213 
1214 	return 0;
1215 }
1216 
ni65_get_stats(struct net_device * dev)1217 static struct net_device_stats *ni65_get_stats(struct net_device *dev)
1218 {
1219 
1220 #if 0
1221 	int i;
1222 	struct priv *p = dev->ml_priv;
1223 	for(i=0;i<RMDNUM;i++)
1224 	{
1225 		struct rmd *rmdp = p->rmdhead + ((p->rmdnum + i) & (RMDNUM-1));
1226 		printk("%02x ",rmdp->u.s.status);
1227 	}
1228 	printk("\n");
1229 #endif
1230 
1231 	return &((struct priv *)dev->ml_priv)->stats;
1232 }
1233 
set_multicast_list(struct net_device * dev)1234 static void set_multicast_list(struct net_device *dev)
1235 {
1236 	if(!ni65_lance_reinit(dev))
1237 		printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name);
1238 	netif_wake_queue(dev);
1239 }
1240 
1241 #ifdef MODULE
1242 static struct net_device *dev_ni65;
1243 
1244 module_param(irq, int, 0);
1245 module_param(io, int, 0);
1246 module_param(dma, int, 0);
1247 MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
1248 MODULE_PARM_DESC(io, "ni6510 I/O base address");
1249 MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
1250 
init_module(void)1251 int __init init_module(void)
1252 {
1253  	dev_ni65 = ni65_probe(-1);
1254 	return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0;
1255 }
1256 
cleanup_module(void)1257 void __exit cleanup_module(void)
1258 {
1259  	unregister_netdev(dev_ni65);
1260  	cleanup_card(dev_ni65);
1261  	free_netdev(dev_ni65);
1262 }
1263 #endif /* MODULE */
1264 
1265 MODULE_LICENSE("GPL");
1266