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145static char *version =
146 "eth16i.c: v0.35 01-Jul-1999 Mika Kuoppala (miku@iki.fi)\n";
147
148#include <linux/module.h>
149#include <linux/kernel.h>
150#include <linux/types.h>
151#include <linux/fcntl.h>
152#include <linux/interrupt.h>
153#include <linux/ioport.h>
154#include <linux/in.h>
155#include <linux/string.h>
156#include <linux/errno.h>
157#include <linux/init.h>
158#include <linux/spinlock.h>
159#include <linux/netdevice.h>
160#include <linux/etherdevice.h>
161#include <linux/skbuff.h>
162#include <linux/bitops.h>
163#include <linux/jiffies.h>
164#include <linux/io.h>
165
166#include <asm/system.h>
167#include <asm/dma.h>
168
169
170
171
172#define BITSET(ioaddr, bnum) ((outb(((inb(ioaddr)) | (bnum)), ioaddr)))
173#define BITCLR(ioaddr, bnum) ((outb(((inb(ioaddr)) & (~(bnum))), ioaddr)))
174
175
176#define ETH16I_IO_EXTENT 32
177
178
179#define TX_TIMEOUT (400*HZ/1000)
180
181
182#define MAX_RX_LOOP 20
183
184
185#define ETH16I_INTR_ON 0xef8a
186#define ETH16I_INTR_OFF 0x0000
187
188
189#define PKT_GOOD BIT(5)
190#define PKT_GOOD_RMT BIT(4)
191#define PKT_SHORT BIT(3)
192#define PKT_ALIGN_ERR BIT(2)
193#define PKT_CRC_ERR BIT(1)
194#define PKT_RX_BUF_OVERFLOW BIT(0)
195
196
197#define TX_STATUS_REG 0
198#define TX_DONE BIT(7)
199#define NET_BUSY BIT(6)
200#define TX_PKT_RCD BIT(5)
201#define CR_LOST BIT(4)
202#define TX_JABBER_ERR BIT(3)
203#define COLLISION BIT(2)
204#define COLLISIONS_16 BIT(1)
205
206
207#define RX_STATUS_REG 1
208#define RX_PKT BIT(7)
209#define BUS_RD_ERR BIT(6)
210#define SHORT_PKT_ERR BIT(3)
211#define ALIGN_ERR BIT(2)
212#define CRC_ERR BIT(1)
213#define RX_BUF_OVERFLOW BIT(0)
214
215
216#define TX_INTR_REG 2
217#define TX_INTR_DONE BIT(7)
218#define TX_INTR_COL BIT(2)
219#define TX_INTR_16_COL BIT(1)
220
221
222#define RX_INTR_REG 3
223#define RX_INTR_RECEIVE BIT(7)
224#define RX_INTR_SHORT_PKT BIT(3)
225#define RX_INTR_CRC_ERR BIT(1)
226#define RX_INTR_BUF_OVERFLOW BIT(0)
227
228
229#define TRANSMIT_MODE_REG 4
230#define LOOPBACK_CONTROL BIT(1)
231#define CONTROL_OUTPUT BIT(2)
232
233
234#define RECEIVE_MODE_REG 5
235#define RX_BUFFER_EMPTY BIT(6)
236#define ACCEPT_BAD_PACKETS BIT(5)
237#define RECEIVE_SHORT_ADDR BIT(4)
238#define ACCEPT_SHORT_PACKETS BIT(3)
239#define REMOTE_RESET BIT(2)
240
241#define ADDRESS_FILTER_MODE BIT(1) | BIT(0)
242#define REJECT_ALL 0
243#define ACCEPT_ALL 3
244#define MODE_1 1
245#define MODE_2 2
246
247
248#define CONFIG_REG_0 6
249#define DLC_EN BIT(7)
250#define SRAM_CYCLE_TIME_100NS BIT(6)
251#define SYSTEM_BUS_WIDTH_8 BIT(5)
252#define BUFFER_WIDTH_8 BIT(4)
253#define TBS1 BIT(3)
254#define TBS0 BIT(2)
255#define SRAM_BS1 BIT(1)
256#define SRAM_BS0 BIT(0)
257
258#ifndef ETH16I_TX_BUF_SIZE
259#define ETH16I_TX_BUF_SIZE 3
260#endif
261#define TX_BUF_1x2048 0
262#define TX_BUF_2x2048 1
263#define TX_BUF_2x4098 2
264#define TX_BUF_2x8192 3
265
266
267#define CONFIG_REG_1 7
268#define POWERUP BIT(5)
269
270
271#define TRANSMIT_START_REG 10
272#define TRANSMIT_START_RB 2
273#define TX_START BIT(7)
274
275
276#define NODE_ID_0 8
277#define NODE_ID_RB 0
278
279
280#define HASH_TABLE_0 8
281#define HASH_TABLE_RB 1
282
283
284#define BUFFER_MEM_PORT_LB 8
285#define DATAPORT BUFFER_MEM_PORT_LB
286#define BUFFER_MEM_PORT_HB 9
287
288
289#define COL_16_REG 11
290#define HALT_ON_16 0x00
291#define RETRANS_AND_HALT_ON_16 0x02
292
293
294#define MAX_COL_16 10
295
296
297#define TRANSCEIVER_MODE_REG 13
298#define TRANSCEIVER_MODE_RB 2
299#define IO_BASE_UNLOCK BIT(7)
300#define LOWER_SQUELCH_TRESH BIT(6)
301#define LINK_TEST_DISABLE BIT(5)
302#define AUI_SELECT BIT(4)
303#define DIS_AUTO_PORT_SEL BIT(3)
304
305
306#define FILTER_SELF_RX_REG 14
307#define SKIP_RX_PACKET BIT(2)
308#define FILTER_SELF_RECEIVE BIT(0)
309
310
311#define EEPROM_CTRL_REG 16
312
313
314#define EEPROM_DATA_REG 17
315
316
317#define CS_0 0x00
318#define CS_1 0x20
319#define SK_0 0x00
320#define SK_1 0x40
321#define DI_0 0x00
322#define DI_1 0x80
323
324
325#define EEPROM_READ 0x80
326
327
328#define E_NODEID_0 0x02
329#define E_NODEID_1 0x03
330#define E_NODEID_2 0x04
331#define E_PORT_SELECT 0x14
332 #define E_PORT_BNC 0x00
333 #define E_PORT_DIX 0x01
334 #define E_PORT_TP 0x02
335 #define E_PORT_AUTO 0x03
336 #define E_PORT_FROM_EPROM 0x04
337#define E_PRODUCT_CFG 0x30
338
339
340
341#define eeprom_slow_io() do { int _i = 40; while(--_i > 0) { inb(0x80); }}while(0)
342
343
344#define JUMPERLESS_CONFIG 19
345
346
347#define ID_ROM_0 24
348#define ID_ROM_7 31
349#define RESET ID_ROM_0
350
351
352static unsigned int eth16i_portlist[] __initdata = {
353 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
354};
355
356static unsigned int eth32i_portlist[] __initdata = {
357 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0x7000, 0x8000,
358 0x9000, 0xA000, 0xB000, 0xC000, 0xD000, 0xE000, 0xF000, 0
359};
360
361
362static unsigned int eth16i_irqmap[] __initdata = { 9, 10, 5, 15, 0 };
363#define NUM_OF_ISA_IRQS 4
364
365
366static unsigned int eth32i_irqmap[] __initdata = { 3, 5, 7, 9, 10, 11, 12, 15, 0 };
367#define EISA_IRQ_REG 0xc89
368#define NUM_OF_EISA_IRQS 8
369
370static unsigned int eth16i_tx_buf_map[] = { 2048, 2048, 4096, 8192 };
371
372
373#ifndef ETH16I_DEBUG
374#define ETH16I_DEBUG 0
375#endif
376static unsigned int eth16i_debug = ETH16I_DEBUG;
377
378
379
380struct eth16i_local {
381 unsigned char tx_started;
382 unsigned char tx_buf_busy;
383 unsigned short tx_queue;
384 unsigned short tx_queue_len;
385 unsigned int tx_buf_size;
386 unsigned long open_time;
387 unsigned long tx_buffered_packets;
388 unsigned long tx_buffered_bytes;
389 unsigned long col_16;
390 spinlock_t lock;
391};
392
393
394
395static int eth16i_probe1(struct net_device *dev, int ioaddr);
396static int eth16i_check_signature(int ioaddr);
397static int eth16i_probe_port(int ioaddr);
398static void eth16i_set_port(int ioaddr, int porttype);
399static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l);
400static int eth16i_receive_probe_packet(int ioaddr);
401static int eth16i_get_irq(int ioaddr);
402static int eth16i_read_eeprom(int ioaddr, int offset);
403static int eth16i_read_eeprom_word(int ioaddr);
404static void eth16i_eeprom_cmd(int ioaddr, unsigned char command);
405static int eth16i_open(struct net_device *dev);
406static int eth16i_close(struct net_device *dev);
407static netdev_tx_t eth16i_tx(struct sk_buff *skb, struct net_device *dev);
408static void eth16i_rx(struct net_device *dev);
409static void eth16i_timeout(struct net_device *dev);
410static irqreturn_t eth16i_interrupt(int irq, void *dev_id);
411static void eth16i_reset(struct net_device *dev);
412static void eth16i_timeout(struct net_device *dev);
413static void eth16i_skip_packet(struct net_device *dev);
414static void eth16i_multicast(struct net_device *dev);
415static void eth16i_select_regbank(unsigned char regbank, int ioaddr);
416static void eth16i_initialize(struct net_device *dev, int boot);
417
418#if 0
419static int eth16i_set_irq(struct net_device *dev);
420#endif
421
422#ifdef MODULE
423static ushort eth16i_parse_mediatype(const char* s);
424#endif
425
426static char cardname[] __initdata = "ICL EtherTeam 16i/32";
427
428static int __init do_eth16i_probe(struct net_device *dev)
429{
430 int i;
431 int ioaddr;
432 int base_addr = dev->base_addr;
433
434 if(eth16i_debug > 4)
435 printk(KERN_DEBUG "Probing started for %s\n", cardname);
436
437 if(base_addr > 0x1ff)
438 return eth16i_probe1(dev, base_addr);
439 else if(base_addr != 0)
440 return -ENXIO;
441
442
443 for(i = 0; (ioaddr = eth16i_portlist[i]) ; i++)
444 if(eth16i_probe1(dev, ioaddr) == 0)
445 return 0;
446
447
448 for(i = 0; (ioaddr = eth32i_portlist[i]) ; i++)
449 if(eth16i_probe1(dev, ioaddr) == 0)
450 return 0;
451
452 return -ENODEV;
453}
454
455#ifndef MODULE
456struct net_device * __init eth16i_probe(int unit)
457{
458 struct net_device *dev = alloc_etherdev(sizeof(struct eth16i_local));
459 int err;
460
461 if (!dev)
462 return ERR_PTR(-ENOMEM);
463
464 sprintf(dev->name, "eth%d", unit);
465 netdev_boot_setup_check(dev);
466
467 err = do_eth16i_probe(dev);
468 if (err)
469 goto out;
470 return dev;
471out:
472 free_netdev(dev);
473 return ERR_PTR(err);
474}
475#endif
476
477static const struct net_device_ops eth16i_netdev_ops = {
478 .ndo_open = eth16i_open,
479 .ndo_stop = eth16i_close,
480 .ndo_start_xmit = eth16i_tx,
481 .ndo_set_rx_mode = eth16i_multicast,
482 .ndo_tx_timeout = eth16i_timeout,
483 .ndo_change_mtu = eth_change_mtu,
484 .ndo_set_mac_address = eth_mac_addr,
485 .ndo_validate_addr = eth_validate_addr,
486};
487
488static int __init eth16i_probe1(struct net_device *dev, int ioaddr)
489{
490 struct eth16i_local *lp = netdev_priv(dev);
491 static unsigned version_printed;
492 int retval;
493
494
495 if (!request_region(ioaddr, ETH16I_IO_EXTENT, cardname))
496 return -EBUSY;
497
498
499
500
501
502
503
504
505 if(ioaddr < 0x1000) {
506 if(eth16i_portlist[(inb(ioaddr + JUMPERLESS_CONFIG) & 0x07)]
507 != ioaddr) {
508 retval = -ENODEV;
509 goto out;
510 }
511 }
512
513
514
515 if(eth16i_check_signature(ioaddr) != 0) {
516 retval = -ENODEV;
517 goto out;
518 }
519
520
521
522
523
524
525
526
527
528 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
529 outb(0x00, ioaddr + TRANSCEIVER_MODE_REG);
530
531 outb(0x00, ioaddr + RESET);
532 BITSET(ioaddr + CONFIG_REG_0, BIT(7));
533
534 if( (eth16i_debug & version_printed++) == 0)
535 printk(KERN_INFO "%s", version);
536
537 dev->base_addr = ioaddr;
538 dev->irq = eth16i_get_irq(ioaddr);
539
540
541
542 if ((retval = request_irq(dev->irq, (void *)ð16i_interrupt, 0, cardname, dev))) {
543 printk(KERN_WARNING "%s at %#3x, but is unusable due to conflicting IRQ %d.\n",
544 cardname, ioaddr, dev->irq);
545 goto out;
546 }
547
548 printk(KERN_INFO "%s: %s at %#3x, IRQ %d, ",
549 dev->name, cardname, ioaddr, dev->irq);
550
551
552
553 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
554 outb(0x38, ioaddr + TRANSCEIVER_MODE_REG);
555
556 eth16i_initialize(dev, 1);
557
558
559 BITCLR(ioaddr + CONFIG_REG_1, POWERUP);
560
561
562 dev->netdev_ops = ð16i_netdev_ops;
563 dev->watchdog_timeo = TX_TIMEOUT;
564 spin_lock_init(&lp->lock);
565
566 retval = register_netdev(dev);
567 if (retval)
568 goto out1;
569 return 0;
570out1:
571 free_irq(dev->irq, dev);
572out:
573 release_region(ioaddr, ETH16I_IO_EXTENT);
574 return retval;
575}
576
577
578static void eth16i_initialize(struct net_device *dev, int boot)
579{
580 int ioaddr = dev->base_addr;
581 int i, node_w = 0;
582 unsigned char node_byte = 0;
583
584
585 eth16i_select_regbank(NODE_ID_RB, ioaddr);
586 for(i = 0 ; i < 3 ; i++) {
587 unsigned short node_val = eth16i_read_eeprom(ioaddr, E_NODEID_0 + i);
588 ((unsigned short *)dev->dev_addr)[i] = ntohs(node_val);
589 }
590
591 for(i = 0; i < 6; i++) {
592 outb( ((unsigned char *)dev->dev_addr)[i], ioaddr + NODE_ID_0 + i);
593 if(boot) {
594 printk("%02x", inb(ioaddr + NODE_ID_0 + i));
595 if(i != 5)
596 printk(":");
597 }
598 }
599
600
601 eth16i_select_regbank(HASH_TABLE_RB, ioaddr);
602 for(i = 0; i < 8; i++)
603 outb(0x00, ioaddr + HASH_TABLE_0 + i);
604
605
606
607
608
609
610
611 eth16i_select_regbank(2, ioaddr);
612
613 node_byte = 0;
614 node_w = eth16i_read_eeprom(ioaddr, E_PRODUCT_CFG);
615
616 if( (node_w & 0xFF00) == 0x0800)
617 node_byte |= BUFFER_WIDTH_8;
618
619 node_byte |= SRAM_BS1;
620
621 if( (node_w & 0x00FF) == 64)
622 node_byte |= SRAM_BS0;
623
624 node_byte |= DLC_EN | SRAM_CYCLE_TIME_100NS | (ETH16I_TX_BUF_SIZE << 2);
625
626 outb(node_byte, ioaddr + CONFIG_REG_0);
627
628
629 outb(HALT_ON_16, ioaddr + COL_16_REG);
630
631#ifdef MODULE
632
633#else
634 dev->if_port = (dev->mem_start < E_PORT_FROM_EPROM) ?
635 dev->mem_start : E_PORT_FROM_EPROM;
636#endif
637
638
639 if(boot) {
640 static const char * const porttype[] = {
641 "BNC", "DIX", "TP", "AUTO", "FROM_EPROM"
642 };
643
644 switch(dev->if_port)
645 {
646
647 case E_PORT_FROM_EPROM:
648 dev->if_port = eth16i_read_eeprom(ioaddr, E_PORT_SELECT);
649 break;
650
651 case E_PORT_AUTO:
652 dev->if_port = eth16i_probe_port(ioaddr);
653 break;
654
655 case E_PORT_BNC:
656 case E_PORT_TP:
657 case E_PORT_DIX:
658 break;
659 }
660
661 printk(" %s interface.\n", porttype[dev->if_port]);
662
663 eth16i_set_port(ioaddr, dev->if_port);
664 }
665
666
667 outb(MODE_2, ioaddr + RECEIVE_MODE_REG);
668}
669
670static int eth16i_probe_port(int ioaddr)
671{
672 int i;
673 int retcode;
674 unsigned char dummy_packet[64];
675
676
677 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
678
679 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
680
681 eth16i_select_regbank(NODE_ID_RB, ioaddr);
682
683 for(i = 0; i < 6; i++) {
684 dummy_packet[i] = inb(ioaddr + NODE_ID_0 + i);
685 dummy_packet[i+6] = inb(ioaddr + NODE_ID_0 + i);
686 }
687
688 dummy_packet[12] = 0x00;
689 dummy_packet[13] = 0x04;
690 memset(dummy_packet + 14, 0, sizeof(dummy_packet) - 14);
691
692 eth16i_select_regbank(2, ioaddr);
693
694 for(i = 0; i < 3; i++) {
695 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
696 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
697 eth16i_set_port(ioaddr, i);
698
699 if(eth16i_debug > 1)
700 printk(KERN_DEBUG "Set port number %d\n", i);
701
702 retcode = eth16i_send_probe_packet(ioaddr, dummy_packet, 64);
703 if(retcode == 0) {
704 retcode = eth16i_receive_probe_packet(ioaddr);
705 if(retcode != -1) {
706 if(eth16i_debug > 1)
707 printk(KERN_DEBUG "Eth16i interface port found at %d\n", i);
708 return i;
709 }
710 }
711 else {
712 if(eth16i_debug > 1)
713 printk(KERN_DEBUG "TRANSMIT_DONE timeout when probing interface port\n");
714 }
715 }
716
717 if( eth16i_debug > 1)
718 printk(KERN_DEBUG "Using default port\n");
719
720 return E_PORT_BNC;
721}
722
723static void eth16i_set_port(int ioaddr, int porttype)
724{
725 unsigned short temp = 0;
726
727 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
728 outb(LOOPBACK_CONTROL, ioaddr + TRANSMIT_MODE_REG);
729
730 temp |= DIS_AUTO_PORT_SEL;
731
732 switch(porttype) {
733
734 case E_PORT_BNC :
735 temp |= AUI_SELECT;
736 break;
737
738 case E_PORT_TP :
739 break;
740
741 case E_PORT_DIX :
742 temp |= AUI_SELECT;
743 BITSET(ioaddr + TRANSMIT_MODE_REG, CONTROL_OUTPUT);
744 break;
745 }
746
747 outb(temp, ioaddr + TRANSCEIVER_MODE_REG);
748
749 if(eth16i_debug > 1) {
750 printk(KERN_DEBUG "TRANSMIT_MODE_REG = %x\n", inb(ioaddr + TRANSMIT_MODE_REG));
751 printk(KERN_DEBUG "TRANSCEIVER_MODE_REG = %x\n",
752 inb(ioaddr+TRANSCEIVER_MODE_REG));
753 }
754}
755
756static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l)
757{
758 unsigned long starttime;
759
760 outb(0xff, ioaddr + TX_STATUS_REG);
761
762 outw(l, ioaddr + DATAPORT);
763 outsw(ioaddr + DATAPORT, (unsigned short *)b, (l + 1) >> 1);
764
765 starttime = jiffies;
766 outb(TX_START | 1, ioaddr + TRANSMIT_START_REG);
767
768 while( (inb(ioaddr + TX_STATUS_REG) & 0x80) == 0) {
769 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
770 return -1;
771 }
772 }
773
774 return 0;
775}
776
777static int eth16i_receive_probe_packet(int ioaddr)
778{
779 unsigned long starttime;
780
781 starttime = jiffies;
782
783 while((inb(ioaddr + TX_STATUS_REG) & 0x20) == 0) {
784 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
785
786 if(eth16i_debug > 1)
787 printk(KERN_DEBUG "Timeout occurred waiting transmit packet received\n");
788 starttime = jiffies;
789 while((inb(ioaddr + RX_STATUS_REG) & 0x80) == 0) {
790 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
791 if(eth16i_debug > 1)
792 printk(KERN_DEBUG "Timeout occurred waiting receive packet\n");
793 return -1;
794 }
795 }
796
797 if(eth16i_debug > 1)
798 printk(KERN_DEBUG "RECEIVE_PACKET\n");
799 return 0;
800 }
801 }
802
803 if(eth16i_debug > 1) {
804 printk(KERN_DEBUG "TRANSMIT_PACKET_RECEIVED %x\n", inb(ioaddr + TX_STATUS_REG));
805 printk(KERN_DEBUG "RX_STATUS_REG = %x\n", inb(ioaddr + RX_STATUS_REG));
806 }
807
808 return 0;
809}
810
811#if 0
812static int eth16i_set_irq(struct net_device* dev)
813{
814 const int ioaddr = dev->base_addr;
815 const int irq = dev->irq;
816 int i = 0;
817
818 if(ioaddr < 0x1000) {
819 while(eth16i_irqmap[i] && eth16i_irqmap[i] != irq)
820 i++;
821
822 if(i < NUM_OF_ISA_IRQS) {
823 u8 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
824 cbyte = (cbyte & 0x3F) | (i << 6);
825 outb(cbyte, ioaddr + JUMPERLESS_CONFIG);
826 return 0;
827 }
828 }
829 else {
830 printk(KERN_NOTICE "%s: EISA Interrupt cannot be set. Use EISA Configuration utility.\n", dev->name);
831 }
832
833 return -1;
834
835}
836#endif
837
838static int __init eth16i_get_irq(int ioaddr)
839{
840 unsigned char cbyte;
841
842 if( ioaddr < 0x1000) {
843 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
844 return eth16i_irqmap[((cbyte & 0xC0) >> 6)];
845 } else {
846 unsigned short index = 0;
847 cbyte = inb(ioaddr + EISA_IRQ_REG);
848 while( (cbyte & 0x01) == 0) {
849 cbyte = cbyte >> 1;
850 index++;
851 }
852 return eth32i_irqmap[index];
853 }
854}
855
856static int __init eth16i_check_signature(int ioaddr)
857{
858 int i;
859 unsigned char creg[4] = { 0 };
860
861 for(i = 0; i < 4 ; i++) {
862
863 creg[i] = inb(ioaddr + TRANSMIT_MODE_REG + i);
864
865 if(eth16i_debug > 1)
866 printk("eth16i: read signature byte %x at %x\n",
867 creg[i],
868 ioaddr + TRANSMIT_MODE_REG + i);
869 }
870
871 creg[0] &= 0x0F;
872 creg[2] &= 0x7F;
873
874#if 0
875
876
877
878
879
880 if( ! ((creg[0] == 0x06) && (creg[1] == 0x41)) ) {
881 if(creg[1] != 0x42)
882 return -1;
883 }
884#endif
885
886 if( !((creg[2] == 0x36) && (creg[3] == 0xE0)) ) {
887 creg[2] &= 0x40;
888 creg[3] &= 0x03;
889
890 if( !((creg[2] == 0x40) && (creg[3] == 0x00)) )
891 return -1;
892 }
893
894 if(eth16i_read_eeprom(ioaddr, E_NODEID_0) != 0)
895 return -1;
896
897 if((eth16i_read_eeprom(ioaddr, E_NODEID_1) & 0xFF00) != 0x4B00)
898 return -1;
899
900 return 0;
901}
902
903static int eth16i_read_eeprom(int ioaddr, int offset)
904{
905 int data = 0;
906
907 eth16i_eeprom_cmd(ioaddr, EEPROM_READ | offset);
908 outb(CS_1, ioaddr + EEPROM_CTRL_REG);
909 data = eth16i_read_eeprom_word(ioaddr);
910 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
911
912 return data;
913}
914
915static int eth16i_read_eeprom_word(int ioaddr)
916{
917 int i;
918 int data = 0;
919
920 for(i = 16; i > 0; i--) {
921 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
922 eeprom_slow_io();
923 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
924 eeprom_slow_io();
925 data = (data << 1) |
926 ((inb(ioaddr + EEPROM_DATA_REG) & DI_1) ? 1 : 0);
927
928 eeprom_slow_io();
929 }
930
931 return data;
932}
933
934static void eth16i_eeprom_cmd(int ioaddr, unsigned char command)
935{
936 int i;
937
938 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
939 outb(DI_0, ioaddr + EEPROM_DATA_REG);
940 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
941 outb(DI_1, ioaddr + EEPROM_DATA_REG);
942 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
943
944 for(i = 7; i >= 0; i--) {
945 short cmd = ( (command & (1 << i)) ? DI_1 : DI_0 );
946 outb(cmd, ioaddr + EEPROM_DATA_REG);
947 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
948 eeprom_slow_io();
949 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
950 eeprom_slow_io();
951 }
952}
953
954static int eth16i_open(struct net_device *dev)
955{
956 struct eth16i_local *lp = netdev_priv(dev);
957 int ioaddr = dev->base_addr;
958
959
960 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
961
962
963 eth16i_initialize(dev, 0);
964
965
966 lp->tx_buf_size = eth16i_tx_buf_map[ETH16I_TX_BUF_SIZE & 0x03];
967
968 if(eth16i_debug > 0)
969 printk(KERN_DEBUG "%s: transmit buffer size %d\n",
970 dev->name, lp->tx_buf_size);
971
972
973 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
974
975
976 eth16i_select_regbank(2, ioaddr);
977
978 lp->open_time = jiffies;
979 lp->tx_started = 0;
980 lp->tx_queue = 0;
981 lp->tx_queue_len = 0;
982
983
984 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
985
986 netif_start_queue(dev);
987 return 0;
988}
989
990static int eth16i_close(struct net_device *dev)
991{
992 struct eth16i_local *lp = netdev_priv(dev);
993 int ioaddr = dev->base_addr;
994
995 eth16i_reset(dev);
996
997
998 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
999
1000 netif_stop_queue(dev);
1001
1002 lp->open_time = 0;
1003
1004
1005 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1006
1007
1008
1009
1010
1011 outb(0x00, ioaddr + CONFIG_REG_1);
1012
1013 return 0;
1014}
1015
1016static void eth16i_timeout(struct net_device *dev)
1017{
1018 struct eth16i_local *lp = netdev_priv(dev);
1019 int ioaddr = dev->base_addr;
1020
1021
1022
1023
1024
1025
1026 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1027 printk(KERN_WARNING "%s: transmit timed out with status %04x, %s ?\n",
1028 dev->name,
1029 inw(ioaddr + TX_STATUS_REG), (inb(ioaddr + TX_STATUS_REG) & TX_DONE) ?
1030 "IRQ conflict" : "network cable problem");
1031
1032 dev->trans_start = jiffies;
1033
1034
1035 if(eth16i_debug > 0) {
1036 printk(KERN_DEBUG "%s: timeout: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
1037 dev->name, inb(ioaddr + 0),
1038 inb(ioaddr + 1), inb(ioaddr + 2),
1039 inb(ioaddr + 3), inb(ioaddr + 4),
1040 inb(ioaddr + 5),
1041 inb(ioaddr + 6), inb(ioaddr + 7));
1042
1043 printk(KERN_DEBUG "%s: transmit start reg: %02x. collision reg %02x\n",
1044 dev->name, inb(ioaddr + TRANSMIT_START_REG),
1045 inb(ioaddr + COL_16_REG));
1046 printk(KERN_DEBUG "lp->tx_queue = %d\n", lp->tx_queue);
1047 printk(KERN_DEBUG "lp->tx_queue_len = %d\n", lp->tx_queue_len);
1048 printk(KERN_DEBUG "lp->tx_started = %d\n", lp->tx_started);
1049 }
1050 dev->stats.tx_errors++;
1051 eth16i_reset(dev);
1052 dev->trans_start = jiffies;
1053 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1054 netif_wake_queue(dev);
1055}
1056
1057static netdev_tx_t eth16i_tx(struct sk_buff *skb, struct net_device *dev)
1058{
1059 struct eth16i_local *lp = netdev_priv(dev);
1060 int ioaddr = dev->base_addr;
1061 int status = 0;
1062 ushort length = skb->len;
1063 unsigned char *buf;
1064 unsigned long flags;
1065
1066 if (length < ETH_ZLEN) {
1067 if (skb_padto(skb, ETH_ZLEN))
1068 return NETDEV_TX_OK;
1069 length = ETH_ZLEN;
1070 }
1071 buf = skb->data;
1072
1073 netif_stop_queue(dev);
1074
1075
1076 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1077
1078
1079
1080
1081 spin_lock_irqsave(&lp->lock, flags);
1082
1083 if( (length + 2) > (lp->tx_buf_size - lp->tx_queue_len)) {
1084 if(eth16i_debug > 0)
1085 printk(KERN_WARNING "%s: Transmit buffer full.\n", dev->name);
1086 }
1087 else {
1088 outw(length, ioaddr + DATAPORT);
1089
1090 if( ioaddr < 0x1000 )
1091 outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
1092 else {
1093 unsigned char frag = length % 4;
1094 outsl(ioaddr + DATAPORT, buf, length >> 2);
1095 if( frag != 0 ) {
1096 outsw(ioaddr + DATAPORT, (buf + (length & 0xFFFC)), 1);
1097 if( frag == 3 )
1098 outsw(ioaddr + DATAPORT,
1099 (buf + (length & 0xFFFC) + 2), 1);
1100 }
1101 }
1102 lp->tx_buffered_packets++;
1103 lp->tx_buffered_bytes = length;
1104 lp->tx_queue++;
1105 lp->tx_queue_len += length + 2;
1106 }
1107 lp->tx_buf_busy = 0;
1108
1109 if(lp->tx_started == 0) {
1110
1111 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1112 lp->tx_queue = 0;
1113 lp->tx_queue_len = 0;
1114 lp->tx_started = 1;
1115 netif_wake_queue(dev);
1116 }
1117 else if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1118
1119 netif_wake_queue(dev);
1120 }
1121
1122 spin_unlock_irqrestore(&lp->lock, flags);
1123
1124 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1125
1126
1127 status = 0;
1128 dev_kfree_skb(skb);
1129 return NETDEV_TX_OK;
1130}
1131
1132static void eth16i_rx(struct net_device *dev)
1133{
1134 int ioaddr = dev->base_addr;
1135 int boguscount = MAX_RX_LOOP;
1136
1137
1138 while( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) {
1139
1140
1141 ushort status = inw(ioaddr + DATAPORT);
1142
1143
1144 ushort pkt_len = inw(ioaddr + DATAPORT);
1145
1146 if(eth16i_debug > 4)
1147 printk(KERN_DEBUG "%s: Receiving packet mode %02x status %04x.\n",
1148 dev->name,
1149 inb(ioaddr + RECEIVE_MODE_REG), status);
1150
1151 if( !(status & PKT_GOOD) ) {
1152 dev->stats.rx_errors++;
1153
1154 if( (pkt_len < ETH_ZLEN) || (pkt_len > ETH_FRAME_LEN) ) {
1155 dev->stats.rx_length_errors++;
1156 eth16i_reset(dev);
1157 return;
1158 }
1159 else {
1160 eth16i_skip_packet(dev);
1161 dev->stats.rx_dropped++;
1162 }
1163 }
1164 else {
1165 struct sk_buff *skb;
1166
1167 skb = dev_alloc_skb(pkt_len + 3);
1168 if( skb == NULL ) {
1169 printk(KERN_WARNING "%s: Could'n allocate memory for packet (len %d)\n",
1170 dev->name, pkt_len);
1171 eth16i_skip_packet(dev);
1172 dev->stats.rx_dropped++;
1173 break;
1174 }
1175
1176 skb_reserve(skb,2);
1177
1178
1179
1180
1181
1182
1183
1184 if(ioaddr < 0x1000)
1185 insw(ioaddr + DATAPORT, skb_put(skb, pkt_len),
1186 (pkt_len + 1) >> 1);
1187 else {
1188 unsigned char *buf = skb_put(skb, pkt_len);
1189 unsigned char frag = pkt_len % 4;
1190
1191 insl(ioaddr + DATAPORT, buf, pkt_len >> 2);
1192
1193 if(frag != 0) {
1194 unsigned short rest[2];
1195 rest[0] = inw( ioaddr + DATAPORT );
1196 if(frag == 3)
1197 rest[1] = inw( ioaddr + DATAPORT );
1198
1199 memcpy(buf + (pkt_len & 0xfffc), (char *)rest, frag);
1200 }
1201 }
1202
1203 skb->protocol=eth_type_trans(skb, dev);
1204
1205 if( eth16i_debug > 5 ) {
1206 int i;
1207 printk(KERN_DEBUG "%s: Received packet of length %d.\n",
1208 dev->name, pkt_len);
1209 for(i = 0; i < 14; i++)
1210 printk(KERN_DEBUG " %02x", skb->data[i]);
1211 printk(KERN_DEBUG ".\n");
1212 }
1213 netif_rx(skb);
1214 dev->stats.rx_packets++;
1215 dev->stats.rx_bytes += pkt_len;
1216
1217 }
1218
1219 if(--boguscount <= 0)
1220 break;
1221
1222 }
1223}
1224
1225static irqreturn_t eth16i_interrupt(int irq, void *dev_id)
1226{
1227 struct net_device *dev = dev_id;
1228 struct eth16i_local *lp;
1229 int ioaddr = 0, status;
1230 int handled = 0;
1231
1232 ioaddr = dev->base_addr;
1233 lp = netdev_priv(dev);
1234
1235
1236 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1237
1238
1239 spin_lock(&lp->lock);
1240
1241 status = inw(ioaddr + TX_STATUS_REG);
1242 outw(status, ioaddr + TX_STATUS_REG);
1243
1244 if (status)
1245 handled = 1;
1246
1247 if(eth16i_debug > 3)
1248 printk(KERN_DEBUG "%s: Interrupt with status %04x.\n", dev->name, status);
1249
1250 if( status & 0x7f00 ) {
1251
1252 dev->stats.rx_errors++;
1253
1254 if(status & (BUS_RD_ERR << 8) )
1255 printk(KERN_WARNING "%s: Bus read error.\n",dev->name);
1256 if(status & (SHORT_PKT_ERR << 8) ) dev->stats.rx_length_errors++;
1257 if(status & (ALIGN_ERR << 8) ) dev->stats.rx_frame_errors++;
1258 if(status & (CRC_ERR << 8) ) dev->stats.rx_crc_errors++;
1259 if(status & (RX_BUF_OVERFLOW << 8) ) dev->stats.rx_over_errors++;
1260 }
1261 if( status & 0x001a) {
1262
1263 dev->stats.tx_errors++;
1264
1265 if(status & CR_LOST) dev->stats.tx_carrier_errors++;
1266 if(status & TX_JABBER_ERR) dev->stats.tx_window_errors++;
1267
1268#if 0
1269 if(status & COLLISION) {
1270 dev->stats.collisions +=
1271 ((inb(ioaddr+TRANSMIT_MODE_REG) & 0xF0) >> 4);
1272 }
1273#endif
1274 if(status & COLLISIONS_16) {
1275 if(lp->col_16 < MAX_COL_16) {
1276 lp->col_16++;
1277 dev->stats.collisions++;
1278
1279 outb(0x02, ioaddr + COL_16_REG);
1280 }
1281 else {
1282 printk(KERN_WARNING "%s: bailing out due to many consecutive 16-in-a-row collisions. Network cable problem?\n", dev->name);
1283 }
1284 }
1285 }
1286
1287 if( status & 0x00ff ) {
1288
1289 if(status & TX_DONE) {
1290 dev->stats.tx_packets = lp->tx_buffered_packets;
1291 dev->stats.tx_bytes += lp->tx_buffered_bytes;
1292 lp->col_16 = 0;
1293
1294 if(lp->tx_queue) {
1295
1296
1297 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1298 lp->tx_queue = 0;
1299 lp->tx_queue_len = 0;
1300 lp->tx_started = 1;
1301 }
1302 else {
1303 lp->tx_started = 0;
1304 }
1305 netif_wake_queue(dev);
1306 }
1307 }
1308
1309 if( ( status & 0x8000 ) ||
1310 ( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) ) {
1311 eth16i_rx(dev);
1312 }
1313
1314
1315 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1316
1317 if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1318
1319 netif_wake_queue(dev);
1320 }
1321
1322 spin_unlock(&lp->lock);
1323
1324 return IRQ_RETVAL(handled);
1325}
1326
1327static void eth16i_skip_packet(struct net_device *dev)
1328{
1329 int ioaddr = dev->base_addr;
1330
1331 inw(ioaddr + DATAPORT);
1332 inw(ioaddr + DATAPORT);
1333 inw(ioaddr + DATAPORT);
1334
1335 outb(SKIP_RX_PACKET, ioaddr + FILTER_SELF_RX_REG);
1336 while( inb( ioaddr + FILTER_SELF_RX_REG ) != 0);
1337}
1338
1339static void eth16i_reset(struct net_device *dev)
1340{
1341 struct eth16i_local *lp = netdev_priv(dev);
1342 int ioaddr = dev->base_addr;
1343
1344 if(eth16i_debug > 1)
1345 printk(KERN_DEBUG "%s: Resetting device.\n", dev->name);
1346
1347 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1348 outw(0xffff, ioaddr + TX_STATUS_REG);
1349 eth16i_select_regbank(2, ioaddr);
1350
1351 lp->tx_started = 0;
1352 lp->tx_buf_busy = 0;
1353 lp->tx_queue = 0;
1354 lp->tx_queue_len = 0;
1355 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
1356}
1357
1358static void eth16i_multicast(struct net_device *dev)
1359{
1360 int ioaddr = dev->base_addr;
1361
1362 if (!netdev_mc_empty(dev) || dev->flags&(IFF_ALLMULTI|IFF_PROMISC))
1363 {
1364 outb(3, ioaddr + RECEIVE_MODE_REG);
1365 } else {
1366 outb(2, ioaddr + RECEIVE_MODE_REG);
1367 }
1368}
1369
1370static void eth16i_select_regbank(unsigned char banknbr, int ioaddr)
1371{
1372 unsigned char data;
1373
1374 data = inb(ioaddr + CONFIG_REG_1);
1375 outb( ((data & 0xF3) | ( (banknbr & 0x03) << 2)), ioaddr + CONFIG_REG_1);
1376}
1377
1378#ifdef MODULE
1379
1380static ushort eth16i_parse_mediatype(const char* s)
1381{
1382 if(!s)
1383 return E_PORT_FROM_EPROM;
1384
1385 if (!strncmp(s, "bnc", 3))
1386 return E_PORT_BNC;
1387 else if (!strncmp(s, "tp", 2))
1388 return E_PORT_TP;
1389 else if (!strncmp(s, "dix", 3))
1390 return E_PORT_DIX;
1391 else if (!strncmp(s, "auto", 4))
1392 return E_PORT_AUTO;
1393 else
1394 return E_PORT_FROM_EPROM;
1395}
1396
1397#define MAX_ETH16I_CARDS 4
1398
1399static struct net_device *dev_eth16i[MAX_ETH16I_CARDS];
1400static int io[MAX_ETH16I_CARDS];
1401#if 0
1402static int irq[MAX_ETH16I_CARDS];
1403#endif
1404static char* mediatype[MAX_ETH16I_CARDS];
1405static int debug = -1;
1406
1407MODULE_AUTHOR("Mika Kuoppala <miku@iki.fi>");
1408MODULE_DESCRIPTION("ICL EtherTeam 16i/32 driver");
1409MODULE_LICENSE("GPL");
1410
1411
1412module_param_array(io, int, NULL, 0);
1413MODULE_PARM_DESC(io, "eth16i I/O base address(es)");
1414
1415#if 0
1416module_param_array(irq, int, NULL, 0);
1417MODULE_PARM_DESC(irq, "eth16i interrupt request number");
1418#endif
1419
1420module_param_array(mediatype, charp, NULL, 0);
1421MODULE_PARM_DESC(mediatype, "eth16i media type of interface(s) (bnc,tp,dix,auto,eprom)");
1422
1423module_param(debug, int, 0);
1424MODULE_PARM_DESC(debug, "eth16i debug level (0-6)");
1425
1426int __init init_module(void)
1427{
1428 int this_dev, found = 0;
1429 struct net_device *dev;
1430
1431 for (this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1432 dev = alloc_etherdev(sizeof(struct eth16i_local));
1433 if (!dev)
1434 break;
1435
1436 dev->base_addr = io[this_dev];
1437
1438 if(debug != -1)
1439 eth16i_debug = debug;
1440
1441 if(eth16i_debug > 1)
1442 printk(KERN_NOTICE "eth16i(%d): interface type %s\n", this_dev, mediatype[this_dev] ? mediatype[this_dev] : "none" );
1443
1444 dev->if_port = eth16i_parse_mediatype(mediatype[this_dev]);
1445
1446 if(io[this_dev] == 0) {
1447 if (this_dev != 0) {
1448 free_netdev(dev);
1449 break;
1450 }
1451
1452 printk(KERN_NOTICE "eth16i.c: Presently autoprobing (not recommended) for a single card.\n");
1453 }
1454
1455 if (do_eth16i_probe(dev) == 0) {
1456 dev_eth16i[found++] = dev;
1457 continue;
1458 }
1459 printk(KERN_WARNING "eth16i.c No Eth16i card found (i/o = 0x%x).\n",
1460 io[this_dev]);
1461 free_netdev(dev);
1462 break;
1463 }
1464 if (found)
1465 return 0;
1466 return -ENXIO;
1467}
1468
1469void __exit cleanup_module(void)
1470{
1471 int this_dev;
1472
1473 for(this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1474 struct net_device *dev = dev_eth16i[this_dev];
1475
1476 if (netdev_priv(dev)) {
1477 unregister_netdev(dev);
1478 free_irq(dev->irq, dev);
1479 release_region(dev->base_addr, ETH16I_IO_EXTENT);
1480 free_netdev(dev);
1481 }
1482 }
1483}
1484#endif
1485