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64#include <linux/kernel.h>
65#include <linux/sched.h>
66#include <linux/string.h>
67#include <linux/ptrace.h>
68#include <linux/errno.h>
69#include <linux/ioport.h>
70#include <linux/slab.h>
71#include <linux/interrupt.h>
72#include <linux/delay.h>
73#include <linux/init.h>
74#include <asm/bitops.h>
75#include <asm/io.h>
76#include <asm/dma.h>
77
78#include <linux/netdevice.h>
79#include <linux/etherdevice.h>
80#include <linux/skbuff.h>
81
82#include <linux/version.h>
83#include <linux/module.h>
84
85#include "ni65.h"
86
87
88
89
90
91
92
93
94#undef XMT_VIA_SKB
95#undef RCV_VIA_SKB
96#define RCV_PARANOIA_CHECK
97
98#define MID_PERFORMANCE
99
100#if defined( LOW_PERFORMANCE )
101 static int isa0=7,isa1=7,csr80=0x0c10;
102#elif defined( MID_PERFORMANCE )
103 static int isa0=5,isa1=5,csr80=0x2810;
104#else
105 static int isa0=4,isa1=4,csr80=0x0017;
106#endif
107
108
109
110
111#define NI65_ID0 0x00
112#define NI65_ID1 0x55
113#define NI65_EB_ID0 0x52
114#define NI65_EB_ID1 0x44
115#define NE2100_ID0 0x57
116#define NE2100_ID1 0x57
117
118#define PORT p->cmdr_addr
119
120
121
122
123#if 1
124#define RMDNUM 16
125#define RMDNUMMASK 0x80000000
126#else
127#define RMDNUM 8
128#define RMDNUMMASK 0x60000000
129#endif
130
131#if 0
132#define TMDNUM 1
133#define TMDNUMMASK 0x00000000
134#else
135#define TMDNUM 4
136#define TMDNUMMASK 0x40000000
137#endif
138
139
140#define R_BUF_SIZE 1544
141#define T_BUF_SIZE 1544
142
143
144
145
146#define L_DATAREG 0x00
147#define L_ADDRREG 0x02
148#define L_RESET 0x04
149#define L_CONFIG 0x05
150#define L_BUSIF 0x06
151
152
153
154
155
156#define CSR0 0x00
157#define CSR1 0x01
158#define CSR2 0x02
159#define CSR3 0x03
160
161#define INIT_RING_BEFORE_START 0x1
162#define FULL_RESET_ON_ERROR 0x2
163
164#if 0
165#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
166 outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
167#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
168 inw(PORT+L_DATAREG))
169#if 0
170#define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
171#else
172#define writedatareg(val) { writereg(val,CSR0); }
173#endif
174#else
175#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);}
176#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG))
177#define writedatareg(val) { writereg(val,CSR0); }
178#endif
179
180static unsigned char ni_vendor[] = { 0x02,0x07,0x01 };
181
182static struct card {
183 unsigned char id0,id1;
184 short id_offset;
185 short total_size;
186 short cmd_offset;
187 short addr_offset;
188 unsigned char *vendor_id;
189 char *cardname;
190 unsigned char config;
191} cards[] = {
192 { NI65_ID0,NI65_ID1,0x0e,0x10,0x0,0x8,ni_vendor,"ni6510", 0x1 } ,
193 { NI65_EB_ID0,NI65_EB_ID1,0x0e,0x18,0x10,0x0,ni_vendor,"ni6510 EtherBlaster", 0x2 } ,
194 { NE2100_ID0,NE2100_ID1,0x0e,0x18,0x10,0x0,NULL,"generic NE2100", 0x0 }
195};
196#define NUM_CARDS 3
197
198struct priv
199{
200 struct rmd rmdhead[RMDNUM];
201 struct tmd tmdhead[TMDNUM];
202 struct init_block ib;
203 int rmdnum;
204 int tmdnum,tmdlast;
205#ifdef RCV_VIA_SKB
206 struct sk_buff *recv_skb[RMDNUM];
207#else
208 void *recvbounce[RMDNUM];
209#endif
210#ifdef XMT_VIA_SKB
211 struct sk_buff *tmd_skb[TMDNUM];
212#endif
213 void *tmdbounce[TMDNUM];
214 int tmdbouncenum;
215 int lock,xmit_queued;
216 struct net_device_stats stats;
217 void *self;
218 int cmdr_addr;
219 int cardno;
220 int features;
221};
222
223static int ni65_probe1(struct net_device *dev,int);
224static void ni65_interrupt(int irq, void * dev_id, struct pt_regs *regs);
225static void ni65_recv_intr(struct net_device *dev,int);
226static void ni65_xmit_intr(struct net_device *dev,int);
227static int ni65_open(struct net_device *dev);
228static int ni65_lance_reinit(struct net_device *dev);
229static void ni65_init_lance(struct priv *p,unsigned char*,int,int);
230static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev);
231static void ni65_timeout(struct net_device *dev);
232static int ni65_close(struct net_device *dev);
233static int ni65_alloc_buffer(struct net_device *dev);
234static void ni65_free_buffer(struct priv *p);
235static struct net_device_stats *ni65_get_stats(struct net_device *);
236static void set_multicast_list(struct net_device *dev);
237
238static int irqtab[] __initdata = { 9,12,15,5 };
239static int dmatab[] __initdata = { 0,3,5,6,7 };
240
241static int debuglevel = 1;
242
243
244
245
246static void ni65_set_performance(struct priv *p)
247{
248 writereg(CSR0_STOP | CSR0_CLRALL,CSR0);
249
250 if( !(cards[p->cardno].config & 0x02) )
251 return;
252
253 outw(80,PORT+L_ADDRREG);
254 if(inw(PORT+L_ADDRREG) != 80)
255 return;
256
257 writereg( (csr80 & 0x3fff) ,80);
258 outw(0,PORT+L_ADDRREG);
259 outw((short)isa0,PORT+L_BUSIF);
260 outw(1,PORT+L_ADDRREG);
261 outw((short)isa1,PORT+L_BUSIF);
262
263 outw(CSR0,PORT+L_ADDRREG);
264}
265
266
267
268
269static int ni65_open(struct net_device *dev)
270{
271 struct priv *p = (struct priv *) dev->priv;
272 int irqval = request_irq(dev->irq, &ni65_interrupt,0,
273 cards[p->cardno].cardname,dev);
274 if (irqval) {
275 printk ("%s: unable to get IRQ %d (irqval=%d).\n",
276 dev->name,dev->irq, irqval);
277 return -EAGAIN;
278 }
279
280 if(ni65_lance_reinit(dev))
281 {
282 netif_start_queue(dev);
283 MOD_INC_USE_COUNT;
284 return 0;
285 }
286 else
287 {
288 free_irq(dev->irq,dev);
289 return -EAGAIN;
290 }
291}
292
293
294
295
296static int ni65_close(struct net_device *dev)
297{
298 struct priv *p = (struct priv *) dev->priv;
299
300 netif_stop_queue(dev);
301
302 outw(inw(PORT+L_RESET),PORT+L_RESET);
303
304#ifdef XMT_VIA_SKB
305 {
306 int i;
307 for(i=0;i<TMDNUM;i++)
308 {
309 if(p->tmd_skb[i]) {
310 dev_kfree_skb(p->tmd_skb[i]);
311 p->tmd_skb[i] = NULL;
312 }
313 }
314 }
315#endif
316 free_irq(dev->irq,dev);
317 MOD_DEC_USE_COUNT;
318 return 0;
319}
320
321
322
323
324#ifdef MODULE
325static
326#endif
327int __init ni65_probe(struct net_device *dev)
328{
329 int *port;
330 static int ports[] = {0x360,0x300,0x320,0x340, 0};
331
332 if (dev->base_addr > 0x1ff)
333 return ni65_probe1(dev, dev->base_addr);
334 else if (dev->base_addr > 0)
335 return -ENXIO;
336
337 for (port = ports; *port; port++)
338 {
339 if (ni65_probe1(dev, *port) == 0)
340 return 0;
341 }
342
343 return -ENODEV;
344}
345
346
347
348
349static int __init ni65_probe1(struct net_device *dev,int ioaddr)
350{
351 int i,j;
352 struct priv *p;
353 unsigned long flags;
354
355 for(i=0;i<NUM_CARDS;i++) {
356 if(check_region(ioaddr, cards[i].total_size))
357 continue;
358 if(cards[i].id_offset >= 0) {
359 if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 ||
360 inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) {
361 continue;
362 }
363 }
364 if(cards[i].vendor_id) {
365 for(j=0;j<3;j++)
366 if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j])
367 continue;
368 }
369 break;
370 }
371 if(i == NUM_CARDS)
372 return -ENODEV;
373
374 for(j=0;j<6;j++)
375 dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j);
376
377 if( (j=ni65_alloc_buffer(dev)) < 0)
378 return j;
379 p = (struct priv *) dev->priv;
380 p->cmdr_addr = ioaddr + cards[i].cmd_offset;
381 p->cardno = i;
382
383 printk("%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr);
384
385 outw(inw(PORT+L_RESET),PORT+L_RESET);
386 if( (j=readreg(CSR0)) != 0x4) {
387 printk(KERN_ERR "can't RESET card: %04x\n",j);
388 ni65_free_buffer(p);
389 return -EAGAIN;
390 }
391
392 outw(88,PORT+L_ADDRREG);
393 if(inw(PORT+L_ADDRREG) == 88) {
394 unsigned long v;
395 v = inw(PORT+L_DATAREG);
396 v <<= 16;
397 outw(89,PORT+L_ADDRREG);
398 v |= inw(PORT+L_DATAREG);
399 printk("Version %#08lx, ",v);
400 p->features = INIT_RING_BEFORE_START;
401 }
402 else {
403 printk("ancient LANCE, ");
404 p->features = 0x0;
405 }
406
407 if(test_bit(0,&cards[i].config)) {
408 dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3];
409 dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3];
410 printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma);
411 }
412 else {
413 if(dev->dma == 0) {
414
415 int dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) | (inb(DMA2_STAT_REG) & 0xf0);
416 for(i=1;i<5;i++) {
417 int dma = dmatab[i];
418 if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))
419 continue;
420
421 flags=claim_dma_lock();
422 disable_dma(dma);
423 set_dma_mode(dma,DMA_MODE_CASCADE);
424 enable_dma(dma);
425 release_dma_lock(flags);
426
427 ni65_init_lance(p,dev->dev_addr,0,0);
428
429 flags=claim_dma_lock();
430 disable_dma(dma);
431 free_dma(dma);
432 release_dma_lock(flags);
433
434 if(readreg(CSR0) & CSR0_IDON)
435 break;
436 }
437 if(i == 5) {
438 printk("Can't detect DMA channel!\n");
439 ni65_free_buffer(p);
440 return -EAGAIN;
441 }
442 dev->dma = dmatab[i];
443 printk("DMA %d (autodetected), ",dev->dma);
444 }
445 else
446 printk("DMA %d (assigned), ",dev->dma);
447
448 if(dev->irq < 2)
449 {
450 ni65_init_lance(p,dev->dev_addr,0,0);
451 autoirq_setup(0);
452 writereg(CSR0_INIT|CSR0_INEA,CSR0);
453
454 if(!(dev->irq = autoirq_report(2)))
455 {
456 printk("Failed to detect IRQ line!\n");
457 ni65_free_buffer(p);
458 return -EAGAIN;
459 }
460 printk("IRQ %d (autodetected).\n",dev->irq);
461 }
462 else
463 printk("IRQ %d (assigned).\n",dev->irq);
464 }
465
466 if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0)
467 {
468 printk("%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma);
469 ni65_free_buffer(p);
470 return -EAGAIN;
471 }
472
473
474
475
476 request_region(ioaddr,cards[p->cardno].total_size,cards[p->cardno].cardname);
477
478 dev->base_addr = ioaddr;
479
480 dev->open = ni65_open;
481 dev->stop = ni65_close;
482 dev->hard_start_xmit = ni65_send_packet;
483 dev->tx_timeout = ni65_timeout;
484 dev->watchdog_timeo = HZ/2;
485 dev->get_stats = ni65_get_stats;
486 dev->set_multicast_list = set_multicast_list;
487
488 ether_setup(dev);
489
490 return 0;
491}
492
493
494
495
496static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode)
497{
498 int i;
499 u32 pib;
500
501 writereg(CSR0_CLRALL|CSR0_STOP,CSR0);
502
503 for(i=0;i<6;i++)
504 p->ib.eaddr[i] = daddr[i];
505
506 for(i=0;i<8;i++)
507 p->ib.filter[i] = filter;
508 p->ib.mode = mode;
509
510 p->ib.trp = (u32) virt_to_bus(p->tmdhead) | TMDNUMMASK;
511 p->ib.rrp = (u32) virt_to_bus(p->rmdhead) | RMDNUMMASK;
512 writereg(0,CSR3);
513 pib = (u32) virt_to_bus(&p->ib);
514 writereg(pib & 0xffff,CSR1);
515 writereg(pib >> 16,CSR2);
516
517 writereg(CSR0_INIT,CSR0);
518
519 for(i=0;i<32;i++)
520 {
521 mdelay(4);
522 if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) )
523 break;
524 }
525}
526
527
528
529
530static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type)
531{
532 struct sk_buff *skb=NULL;
533 unsigned char *ptr;
534 void *ret;
535
536 if(type) {
537 ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA);
538 if(!skb) {
539 printk("%s: unable to allocate %s memory.\n",dev->name,what);
540 return NULL;
541 }
542 skb->dev = dev;
543 skb_reserve(skb,2+16);
544 skb_put(skb,R_BUF_SIZE);
545 ptr = skb->data;
546 }
547 else {
548 ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA);
549 if(!ret) {
550 printk("%s: unable to allocate %s memory.\n",dev->name,what);
551 return NULL;
552 }
553 }
554 if( (u32) virt_to_bus(ptr+size) > 0x1000000) {
555 printk("%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what);
556 if(type)
557 kfree_skb(skb);
558 else
559 kfree(ptr);
560 return NULL;
561 }
562 return ret;
563}
564
565
566
567
568static int ni65_alloc_buffer(struct net_device *dev)
569{
570 unsigned char *ptr;
571 struct priv *p;
572 int i;
573
574
575
576
577 ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0);
578 if(!ptr)
579 return -ENOMEM;
580
581 p = dev->priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
582 memset((char *) dev->priv,0,sizeof(struct priv));
583 p->self = ptr;
584
585 for(i=0;i<TMDNUM;i++)
586 {
587#ifdef XMT_VIA_SKB
588 p->tmd_skb[i] = NULL;
589#endif
590 p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
591 if(!p->tmdbounce[i]) {
592 ni65_free_buffer(p);
593 return -ENOMEM;
594 }
595 }
596
597 for(i=0;i<RMDNUM;i++)
598 {
599#ifdef RCV_VIA_SKB
600 p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
601 if(!p->recv_skb[i]) {
602 ni65_free_buffer(p);
603 return -ENOMEM;
604 }
605#else
606 p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
607 if(!p->recvbounce[i]) {
608 ni65_free_buffer(p);
609 return -ENOMEM;
610 }
611#endif
612 }
613
614 return 0;
615}
616
617
618
619
620static void ni65_free_buffer(struct priv *p)
621{
622 int i;
623
624 if(!p)
625 return;
626
627 for(i=0;i<TMDNUM;i++) {
628 if(p->tmdbounce[i])
629 kfree(p->tmdbounce[i]);
630#ifdef XMT_VIA_SKB
631 if(p->tmd_skb[i])
632 dev_kfree_skb(p->tmd_skb[i]);
633#endif
634 }
635
636 for(i=0;i<RMDNUM;i++)
637 {
638#ifdef RCV_VIA_SKB
639 if(p->recv_skb[i])
640 dev_kfree_skb(p->recv_skb[i]);
641#else
642 if(p->recvbounce[i])
643 kfree(p->recvbounce[i]);
644#endif
645 }
646 if(p->self)
647 kfree(p->self);
648}
649
650
651
652
653
654static void ni65_stop_start(struct net_device *dev,struct priv *p)
655{
656 int csr0 = CSR0_INEA;
657
658 writedatareg(CSR0_STOP);
659
660 if(debuglevel > 1)
661 printk("ni65_stop_start\n");
662
663 if(p->features & INIT_RING_BEFORE_START) {
664 int i;
665#ifdef XMT_VIA_SKB
666 struct sk_buff *skb_save[TMDNUM];
667#endif
668 unsigned long buffer[TMDNUM];
669 short blen[TMDNUM];
670
671 if(p->xmit_queued) {
672 while(1) {
673 if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN))
674 break;
675 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
676 if(p->tmdlast == p->tmdnum)
677 break;
678 }
679 }
680
681 for(i=0;i<TMDNUM;i++) {
682 struct tmd *tmdp = p->tmdhead + i;
683#ifdef XMT_VIA_SKB
684 skb_save[i] = p->tmd_skb[i];
685#endif
686 buffer[i] = (u32) bus_to_virt(tmdp->u.buffer);
687 blen[i] = tmdp->blen;
688 tmdp->u.s.status = 0x0;
689 }
690
691 for(i=0;i<RMDNUM;i++) {
692 struct rmd *rmdp = p->rmdhead + i;
693 rmdp->u.s.status = RCV_OWN;
694 }
695 p->tmdnum = p->xmit_queued = 0;
696 writedatareg(CSR0_STRT | csr0);
697
698 for(i=0;i<TMDNUM;i++) {
699 int num = (i + p->tmdlast) & (TMDNUM-1);
700 p->tmdhead[i].u.buffer = (u32) virt_to_bus((char *)buffer[num]);
701 p->tmdhead[i].blen = blen[num];
702 if(p->tmdhead[i].u.s.status & XMIT_OWN) {
703 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
704 p->xmit_queued = 1;
705 writedatareg(CSR0_TDMD | CSR0_INEA | csr0);
706 }
707#ifdef XMT_VIA_SKB
708 p->tmd_skb[i] = skb_save[num];
709#endif
710 }
711 p->rmdnum = p->tmdlast = 0;
712 if(!p->lock)
713 if (p->tmdnum || !p->xmit_queued)
714 netif_wake_queue(dev);
715 dev->trans_start = jiffies;
716 }
717 else
718 writedatareg(CSR0_STRT | csr0);
719}
720
721
722
723
724static int ni65_lance_reinit(struct net_device *dev)
725{
726 int i;
727 struct priv *p = (struct priv *) dev->priv;
728 unsigned long flags;
729
730 p->lock = 0;
731 p->xmit_queued = 0;
732
733 flags=claim_dma_lock();
734 disable_dma(dev->dma);
735 set_dma_mode(dev->dma,DMA_MODE_CASCADE);
736 enable_dma(dev->dma);
737 release_dma_lock(flags);
738
739 outw(inw(PORT+L_RESET),PORT+L_RESET);
740 if( (i=readreg(CSR0) ) != 0x4)
741 {
742 printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name,
743 cards[p->cardno].cardname,(int) i);
744 flags=claim_dma_lock();
745 disable_dma(dev->dma);
746 release_dma_lock(flags);
747 return 0;
748 }
749
750 p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0;
751 for(i=0;i<TMDNUM;i++)
752 {
753 struct tmd *tmdp = p->tmdhead + i;
754#ifdef XMT_VIA_SKB
755 if(p->tmd_skb[i]) {
756 dev_kfree_skb(p->tmd_skb[i]);
757 p->tmd_skb[i] = NULL;
758 }
759#endif
760 tmdp->u.buffer = 0x0;
761 tmdp->u.s.status = XMIT_START | XMIT_END;
762 tmdp->blen = tmdp->status2 = 0;
763 }
764
765 for(i=0;i<RMDNUM;i++)
766 {
767 struct rmd *rmdp = p->rmdhead + i;
768#ifdef RCV_VIA_SKB
769 rmdp->u.buffer = (u32) virt_to_bus(p->recv_skb[i]->data);
770#else
771 rmdp->u.buffer = (u32) virt_to_bus(p->recvbounce[i]);
772#endif
773 rmdp->blen = -(R_BUF_SIZE-8);
774 rmdp->mlen = 0;
775 rmdp->u.s.status = RCV_OWN;
776 }
777
778 if(dev->flags & IFF_PROMISC)
779 ni65_init_lance(p,dev->dev_addr,0x00,M_PROM);
780 else if(dev->mc_count || dev->flags & IFF_ALLMULTI)
781 ni65_init_lance(p,dev->dev_addr,0xff,0x0);
782 else
783 ni65_init_lance(p,dev->dev_addr,0x00,0x00);
784
785
786
787
788
789
790 if(inw(PORT+L_DATAREG) & CSR0_IDON) {
791 ni65_set_performance(p);
792
793 writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT);
794 return 1;
795 }
796 printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG));
797 flags=claim_dma_lock();
798 disable_dma(dev->dma);
799 release_dma_lock(flags);
800 return 0;
801}
802
803
804
805
806static void ni65_interrupt(int irq, void * dev_id, struct pt_regs * regs)
807{
808 int csr0 = 0;
809 struct net_device *dev = dev_id;
810 struct priv *p;
811 int bcnt = 32;
812
813 p = (struct priv *) dev->priv;
814
815 while(--bcnt) {
816 csr0 = inw(PORT+L_DATAREG);
817
818#if 0
819 writedatareg( (csr0 & CSR0_CLRALL) );
820#else
821 writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA );
822#endif
823
824 if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT)))
825 break;
826
827 if(csr0 & CSR0_RINT)
828 ni65_recv_intr(dev,csr0);
829 if(csr0 & CSR0_TINT)
830 ni65_xmit_intr(dev,csr0);
831
832 if(csr0 & CSR0_ERR)
833 {
834 struct priv *p = (struct priv *) dev->priv;
835 if(debuglevel > 1)
836 printk("%s: general error: %04x.\n",dev->name,csr0);
837 if(csr0 & CSR0_BABL)
838 p->stats.tx_errors++;
839 if(csr0 & CSR0_MISS) {
840 int i;
841 for(i=0;i<RMDNUM;i++)
842 printk("%02x ",p->rmdhead[i].u.s.status);
843 printk("\n");
844 p->stats.rx_errors++;
845 }
846 if(csr0 & CSR0_MERR) {
847 if(debuglevel > 1)
848 printk("%s: Ooops .. memory error: %04x.\n",dev->name,csr0);
849 ni65_stop_start(dev,p);
850 }
851 }
852 }
853
854#ifdef RCV_PARANOIA_CHECK
855{
856 int j;
857 for(j=0;j<RMDNUM;j++)
858 {
859 struct priv *p = (struct priv *) dev->priv;
860 int i,k,num1,num2;
861 for(i=RMDNUM-1;i>0;i--) {
862 num2 = (p->rmdnum + i) & (RMDNUM-1);
863 if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
864 break;
865 }
866
867 if(i) {
868 for(k=0;k<RMDNUM;k++) {
869 num1 = (p->rmdnum + k) & (RMDNUM-1);
870 if(!(p->rmdhead[num1].u.s.status & RCV_OWN))
871 break;
872 }
873 if(!k)
874 break;
875
876 if(debuglevel > 0)
877 {
878 char buf[256],*buf1;
879 int k;
880 buf1 = buf;
881 for(k=0;k<RMDNUM;k++) {
882 sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status));
883 buf1 += 3;
884 }
885 *buf1 = 0;
886 printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf);
887 }
888
889 p->rmdnum = num1;
890 ni65_recv_intr(dev,csr0);
891 if((p->rmdhead[num2].u.s.status & RCV_OWN))
892 break;
893 }
894 else
895 break;
896 }
897}
898#endif
899
900 if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
901 printk("%s: RX or TX was offline -> restart\n",dev->name);
902 ni65_stop_start(dev,p);
903 }
904 else
905 writedatareg(CSR0_INEA);
906
907 return;
908}
909
910
911
912
913
914static void ni65_xmit_intr(struct net_device *dev,int csr0)
915{
916 struct priv *p = (struct priv *) dev->priv;
917
918 while(p->xmit_queued)
919 {
920 struct tmd *tmdp = p->tmdhead + p->tmdlast;
921 int tmdstat = tmdp->u.s.status;
922
923 if(tmdstat & XMIT_OWN)
924 break;
925
926 if(tmdstat & XMIT_ERR)
927 {
928#if 0
929 if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3)
930 printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name);
931#endif
932
933 if(tmdp->status2 & XMIT_RTRY)
934 p->stats.tx_aborted_errors++;
935 if(tmdp->status2 & XMIT_LCAR)
936 p->stats.tx_carrier_errors++;
937 if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) {
938
939 p->stats.tx_fifo_errors++;
940 if(debuglevel > 0)
941 printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name);
942 if(p->features & INIT_RING_BEFORE_START) {
943 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
944 ni65_stop_start(dev,p);
945 break;
946 }
947 else
948 ni65_stop_start(dev,p);
949 }
950 if(debuglevel > 2)
951 printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2);
952 if(!(csr0 & CSR0_BABL))
953 p->stats.tx_errors++;
954 tmdp->status2 = 0;
955 }
956 else {
957 p->stats.tx_bytes -= (short)(tmdp->blen);
958 p->stats.tx_packets++;
959 }
960
961#ifdef XMT_VIA_SKB
962 if(p->tmd_skb[p->tmdlast]) {
963 dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]);
964 p->tmd_skb[p->tmdlast] = NULL;
965 }
966#endif
967
968 p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
969 if(p->tmdlast == p->tmdnum)
970 p->xmit_queued = 0;
971 }
972 netif_wake_queue(dev);
973}
974
975
976
977
978static void ni65_recv_intr(struct net_device *dev,int csr0)
979{
980 struct rmd *rmdp;
981 int rmdstat,len;
982 int cnt=0;
983 struct priv *p = (struct priv *) dev->priv;
984
985 rmdp = p->rmdhead + p->rmdnum;
986 while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
987 {
988 cnt++;
989 if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) )
990 {
991 if(!(rmdstat & RCV_ERR)) {
992 if(rmdstat & RCV_START)
993 {
994 p->stats.rx_length_errors++;
995 printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff);
996 }
997 }
998 else {
999 if(debuglevel > 2)
1000 printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n",
1001 dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) );
1002 if(rmdstat & RCV_FRAM)
1003 p->stats.rx_frame_errors++;
1004 if(rmdstat & RCV_OFLO)
1005 p->stats.rx_over_errors++;
1006 if(rmdstat & RCV_CRC)
1007 p->stats.rx_crc_errors++;
1008 if(rmdstat & RCV_BUF_ERR)
1009 p->stats.rx_fifo_errors++;
1010 }
1011 if(!(csr0 & CSR0_MISS))
1012 p->stats.rx_errors++;
1013 }
1014 else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60)
1015 {
1016#ifdef RCV_VIA_SKB
1017 struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC);
1018 if (skb)
1019 skb_reserve(skb,16);
1020#else
1021 struct sk_buff *skb = dev_alloc_skb(len+2);
1022#endif
1023 if(skb)
1024 {
1025 skb_reserve(skb,2);
1026 skb->dev = dev;
1027#ifdef RCV_VIA_SKB
1028 if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) {
1029 skb_put(skb,len);
1030 eth_copy_and_sum(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len,0);
1031 }
1032 else {
1033 struct sk_buff *skb1 = p->recv_skb[p->rmdnum];
1034 skb_put(skb,R_BUF_SIZE);
1035 p->recv_skb[p->rmdnum] = skb;
1036 rmdp->u.buffer = (u32) virt_to_bus(skb->data);
1037 skb = skb1;
1038 skb_trim(skb,len);
1039 }
1040#else
1041 skb_put(skb,len);
1042 eth_copy_and_sum(skb, (unsigned char *) p->recvbounce[p->rmdnum],len,0);
1043#endif
1044 p->stats.rx_packets++;
1045 p->stats.rx_bytes += len;
1046 skb->protocol=eth_type_trans(skb,dev);
1047 netif_rx(skb);
1048 dev->last_rx = jiffies;
1049 }
1050 else
1051 {
1052 printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name);
1053 p->stats.rx_dropped++;
1054 }
1055 }
1056 else {
1057 printk(KERN_INFO "%s: received runt packet\n",dev->name);
1058 p->stats.rx_errors++;
1059 }
1060 rmdp->blen = -(R_BUF_SIZE-8);
1061 rmdp->mlen = 0;
1062 rmdp->u.s.status = RCV_OWN;
1063 p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1);
1064 rmdp = p->rmdhead + p->rmdnum;
1065 }
1066}
1067
1068
1069
1070
1071
1072static void ni65_timeout(struct net_device *dev)
1073{
1074 int i;
1075 struct priv *p = (struct priv *) dev->priv;
1076
1077 printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name);
1078 for(i=0;i<TMDNUM;i++)
1079 printk("%02x ",p->tmdhead[i].u.s.status);
1080 printk("\n");
1081 ni65_lance_reinit(dev);
1082 dev->trans_start = jiffies;
1083 netif_wake_queue(dev);
1084}
1085
1086
1087
1088
1089
1090static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev)
1091{
1092 struct priv *p = (struct priv *) dev->priv;
1093
1094 netif_stop_queue(dev);
1095
1096 if (test_and_set_bit(0, (void*)&p->lock)) {
1097 printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
1098 return 1;
1099 }
1100
1101 {
1102 short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1103 struct tmd *tmdp;
1104 long flags;
1105
1106#ifdef XMT_VIA_SKB
1107 if( (unsigned long) (skb->data + skb->len) > 0x1000000) {
1108#endif
1109
1110 memcpy((char *) p->tmdbounce[p->tmdbouncenum] ,(char *)skb->data,
1111 (skb->len > T_BUF_SIZE) ? T_BUF_SIZE : skb->len);
1112 dev_kfree_skb (skb);
1113
1114 save_flags(flags);
1115 cli();
1116
1117 tmdp = p->tmdhead + p->tmdnum;
1118 tmdp->u.buffer = (u32) virt_to_bus(p->tmdbounce[p->tmdbouncenum]);
1119 p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1);
1120
1121#ifdef XMT_VIA_SKB
1122 }
1123 else {
1124 save_flags(flags);
1125 cli();
1126
1127 tmdp = p->tmdhead + p->tmdnum;
1128 tmdp->u.buffer = (u32) virt_to_bus(skb->data);
1129 p->tmd_skb[p->tmdnum] = skb;
1130 }
1131#endif
1132 tmdp->blen = -len;
1133
1134 tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
1135 writedatareg(CSR0_TDMD | CSR0_INEA);
1136
1137 p->xmit_queued = 1;
1138 p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
1139
1140 if(p->tmdnum != p->tmdlast)
1141 netif_wake_queue(dev);
1142
1143 p->lock = 0;
1144 dev->trans_start = jiffies;
1145
1146 restore_flags(flags);
1147 }
1148
1149 return 0;
1150}
1151
1152static struct net_device_stats *ni65_get_stats(struct net_device *dev)
1153{
1154
1155#if 0
1156 int i;
1157 struct priv *p = (struct priv *) dev->priv;
1158 for(i=0;i<RMDNUM;i++)
1159 {
1160 struct rmd *rmdp = p->rmdhead + ((p->rmdnum + i) & (RMDNUM-1));
1161 printk("%02x ",rmdp->u.s.status);
1162 }
1163 printk("\n");
1164#endif
1165
1166 return &((struct priv *) dev->priv)->stats;
1167}
1168
1169static void set_multicast_list(struct net_device *dev)
1170{
1171 if(!ni65_lance_reinit(dev))
1172 printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name);
1173 netif_wake_queue(dev);
1174}
1175
1176#ifdef MODULE
1177static struct net_device dev_ni65 = { base_addr: 0x360, irq: 9, init: ni65_probe };
1178
1179
1180static int irq;
1181static int io;
1182static int dma;
1183
1184MODULE_PARM(irq, "i");
1185MODULE_PARM(io, "i");
1186MODULE_PARM(dma, "i");
1187MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
1188MODULE_PARM_DESC(io, "ni6510 I/O base address");
1189MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
1190
1191int init_module(void)
1192{
1193 dev_ni65.irq = irq;
1194 dev_ni65.dma = dma;
1195 dev_ni65.base_addr = io;
1196 if (register_netdev(&dev_ni65) != 0)
1197 return -EIO;
1198 return 0;
1199}
1200
1201void cleanup_module(void)
1202{
1203 struct priv *p;
1204 p = (struct priv *) dev_ni65.priv;
1205 if(!p) {
1206 printk("Ooops .. no private struct\n");
1207 return;
1208 }
1209 disable_dma(dev_ni65.dma);
1210 free_dma(dev_ni65.dma);
1211 unregister_netdev(&dev_ni65);
1212 release_region(dev_ni65.base_addr,cards[p->cardno].total_size);
1213 ni65_free_buffer(p);
1214 dev_ni65.priv = NULL;
1215}
1216#endif
1217MODULE_LICENSE("GPL");
1218
1219
1220
1221
1222
