1 /* eth16i.c An ICL EtherTeam 16i and 32 EISA ethernet driver for Linux
2
3 Written 1994-1999 by Mika Kuoppala
4
5 Copyright (C) 1994-1999 by Mika Kuoppala
6 Based on skeleton.c and heavily on at1700.c by Donald Becker
7
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
10
11 The author may be reached as miku@iki.fi
12
13 This driver supports following cards :
14 - ICL EtherTeam 16i
15 - ICL EtherTeam 32 EISA
16 (Uses true 32 bit transfers rather than 16i compability mode)
17
18 Example Module usage:
19 insmod eth16i.o io=0x2a0 mediatype=bnc
20
21 mediatype can be one of the following: bnc,tp,dix,auto,eprom
22
23 'auto' will try to autoprobe mediatype.
24 'eprom' will use whatever type defined in eprom.
25
26 I have benchmarked driver with PII/300Mhz as a ftp client
27 and 486/33Mhz as a ftp server. Top speed was 1128.37 kilobytes/sec.
28
29 Sources:
30 - skeleton.c a sample network driver core for linux,
31 written by Donald Becker <becker@scyld.com>
32 - at1700.c a driver for Allied Telesis AT1700, written
33 by Donald Becker.
34 - e16iSRV.asm a Netware 3.X Server Driver for ICL EtherTeam16i
35 written by Markku Viima
36 - The Fujitsu MB86965 databook.
37
38 Author thanks following persons due to their valueble assistance:
39 Markku Viima (ICL)
40 Ari Valve (ICL)
41 Donald Becker
42 Kurt Huwig <kurt@huwig.de>
43
44 Revision history:
45
46 Version Date Description
47
48 0.01 15.12-94 Initial version (card detection)
49 0.02 23.01-95 Interrupt is now hooked correctly
50 0.03 01.02-95 Rewrote initialization part
51 0.04 07.02-95 Base skeleton done...
52 Made a few changes to signature checking
53 to make it a bit reliable.
54 - fixed bug in tx_buf mapping
55 - fixed bug in initialization (DLC_EN
56 wasn't enabled when initialization
57 was done.)
58 0.05 08.02-95 If there were more than one packet to send,
59 transmit was jammed due to invalid
60 register write...now fixed
61 0.06 19.02-95 Rewrote interrupt handling
62 0.07 13.04-95 Wrote EEPROM read routines
63 Card configuration now set according to
64 data read from EEPROM
65 0.08 23.06-95 Wrote part that tries to probe used interface
66 port if AUTO is selected
67
68 0.09 01.09-95 Added module support
69
70 0.10 04.09-95 Fixed receive packet allocation to work
71 with kernels > 1.3.x
72
73 0.20 20.09-95 Added support for EtherTeam32 EISA
74
75 0.21 17.10-95 Removed the unnecessary extern
76 init_etherdev() declaration. Some
77 other cleanups.
78
79 0.22 22.02-96 Receive buffer was not flushed
80 correctly when faulty packet was
81 received. Now fixed.
82
83 0.23 26.02-96 Made resetting the adapter
84 more reliable.
85
86 0.24 27.02-96 Rewrote faulty packet handling in eth16i_rx
87
88 0.25 22.05-96 kfree() was missing from cleanup_module.
89
90 0.26 11.06-96 Sometimes card was not found by
91 check_signature(). Now made more reliable.
92
93 0.27 23.06-96 Oops. 16 consecutive collisions halted
94 adapter. Now will try to retransmit
95 MAX_COL_16 times before finally giving up.
96
97 0.28 28.10-97 Added dev_id parameter (NULL) for free_irq
98
99 0.29 29.10-97 Multiple card support for module users
100
101 0.30 30.10-97 Fixed irq allocation bug.
102 (request_irq moved from probe to open)
103
104 0.30a 21.08-98 Card detection made more relaxed. Driver
105 had problems with some TCP/IP-PROM boots
106 to find the card. Suggested by
107 Kurt Huwig <kurt@huwig.de>
108
109 0.31 28.08-98 Media interface port can now be selected
110 with module parameters or kernel
111 boot parameters.
112
113 0.32 31.08-98 IRQ was never freed if open/close
114 pair wasn't called. Now fixed.
115
116 0.33 10.09-98 When eth16i_open() was called after
117 eth16i_close() chip never recovered.
118 Now more shallow reset is made on
119 close.
120
121 0.34 29.06-99 Fixed one bad #ifdef.
122 Changed ioaddr -> io for consistency
123
124 0.35 01.07-99 transmit,-receive bytes were never
125 updated in stats.
126
127 Bugs:
128 In some cases the media interface autoprobing code doesn't find
129 the correct interface type. In this case you can
130 manually choose the interface type in DOS with E16IC.EXE which is
131 configuration software for EtherTeam16i and EtherTeam32 cards.
132 This is also true for IRQ setting. You cannot use module
133 parameter to configure IRQ of the card (yet).
134
135 To do:
136 - Real multicast support
137 - Rewrite the media interface autoprobing code. Its _horrible_ !
138 - Possibly merge all the MB86965 specific code to external
139 module for use by eth16.c and Donald's at1700.c
140 - IRQ configuration with module parameter. I will do
141 this when i will get enough info about setting
142 irq without configuration utility.
143 */
144
145 static 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/slab.h>
156 #include <linux/string.h>
157 #include <linux/errno.h>
158 #include <linux/init.h>
159 #include <linux/spinlock.h>
160 #include <linux/netdevice.h>
161 #include <linux/etherdevice.h>
162 #include <linux/skbuff.h>
163 #include <linux/bitops.h>
164 #include <linux/jiffies.h>
165 #include <linux/io.h>
166
167 #include <asm/system.h>
168 #include <asm/dma.h>
169
170
171
172 /* Few macros */
173 #define BITSET(ioaddr, bnum) ((outb(((inb(ioaddr)) | (bnum)), ioaddr)))
174 #define BITCLR(ioaddr, bnum) ((outb(((inb(ioaddr)) & (~(bnum))), ioaddr)))
175
176 /* This is the I/O address space for Etherteam 16i adapter. */
177 #define ETH16I_IO_EXTENT 32
178
179 /* Ticks before deciding that transmit has timed out */
180 #define TX_TIMEOUT (400*HZ/1000)
181
182 /* Maximum loop count when receiving packets */
183 #define MAX_RX_LOOP 20
184
185 /* Some interrupt masks */
186 #define ETH16I_INTR_ON 0xef8a /* Higher is receive mask */
187 #define ETH16I_INTR_OFF 0x0000
188
189 /* Buffers header status byte meanings */
190 #define PKT_GOOD BIT(5)
191 #define PKT_GOOD_RMT BIT(4)
192 #define PKT_SHORT BIT(3)
193 #define PKT_ALIGN_ERR BIT(2)
194 #define PKT_CRC_ERR BIT(1)
195 #define PKT_RX_BUF_OVERFLOW BIT(0)
196
197 /* Transmit status register (DLCR0) */
198 #define TX_STATUS_REG 0
199 #define TX_DONE BIT(7)
200 #define NET_BUSY BIT(6)
201 #define TX_PKT_RCD BIT(5)
202 #define CR_LOST BIT(4)
203 #define TX_JABBER_ERR BIT(3)
204 #define COLLISION BIT(2)
205 #define COLLISIONS_16 BIT(1)
206
207 /* Receive status register (DLCR1) */
208 #define RX_STATUS_REG 1
209 #define RX_PKT BIT(7) /* Packet received */
210 #define BUS_RD_ERR BIT(6)
211 #define SHORT_PKT_ERR BIT(3)
212 #define ALIGN_ERR BIT(2)
213 #define CRC_ERR BIT(1)
214 #define RX_BUF_OVERFLOW BIT(0)
215
216 /* Transmit Interrupt Enable Register (DLCR2) */
217 #define TX_INTR_REG 2
218 #define TX_INTR_DONE BIT(7)
219 #define TX_INTR_COL BIT(2)
220 #define TX_INTR_16_COL BIT(1)
221
222 /* Receive Interrupt Enable Register (DLCR3) */
223 #define RX_INTR_REG 3
224 #define RX_INTR_RECEIVE BIT(7)
225 #define RX_INTR_SHORT_PKT BIT(3)
226 #define RX_INTR_CRC_ERR BIT(1)
227 #define RX_INTR_BUF_OVERFLOW BIT(0)
228
229 /* Transmit Mode Register (DLCR4) */
230 #define TRANSMIT_MODE_REG 4
231 #define LOOPBACK_CONTROL BIT(1)
232 #define CONTROL_OUTPUT BIT(2)
233
234 /* Receive Mode Register (DLCR5) */
235 #define RECEIVE_MODE_REG 5
236 #define RX_BUFFER_EMPTY BIT(6)
237 #define ACCEPT_BAD_PACKETS BIT(5)
238 #define RECEIVE_SHORT_ADDR BIT(4)
239 #define ACCEPT_SHORT_PACKETS BIT(3)
240 #define REMOTE_RESET BIT(2)
241
242 #define ADDRESS_FILTER_MODE BIT(1) | BIT(0)
243 #define REJECT_ALL 0
244 #define ACCEPT_ALL 3
245 #define MODE_1 1 /* NODE ID, BC, MC, 2-24th bit */
246 #define MODE_2 2 /* NODE ID, BC, MC, Hash Table */
247
248 /* Configuration Register 0 (DLCR6) */
249 #define CONFIG_REG_0 6
250 #define DLC_EN BIT(7)
251 #define SRAM_CYCLE_TIME_100NS BIT(6)
252 #define SYSTEM_BUS_WIDTH_8 BIT(5) /* 1 = 8bit, 0 = 16bit */
253 #define BUFFER_WIDTH_8 BIT(4) /* 1 = 8bit, 0 = 16bit */
254 #define TBS1 BIT(3)
255 #define TBS0 BIT(2)
256 #define SRAM_BS1 BIT(1) /* 00=8kb, 01=16kb */
257 #define SRAM_BS0 BIT(0) /* 10=32kb, 11=64kb */
258
259 #ifndef ETH16I_TX_BUF_SIZE /* 0 = 2kb, 1 = 4kb */
260 #define ETH16I_TX_BUF_SIZE 3 /* 2 = 8kb, 3 = 16kb */
261 #endif
262 #define TX_BUF_1x2048 0
263 #define TX_BUF_2x2048 1
264 #define TX_BUF_2x4098 2
265 #define TX_BUF_2x8192 3
266
267 /* Configuration Register 1 (DLCR7) */
268 #define CONFIG_REG_1 7
269 #define POWERUP BIT(5)
270
271 /* Transmit start register */
272 #define TRANSMIT_START_REG 10
273 #define TRANSMIT_START_RB 2
274 #define TX_START BIT(7) /* Rest of register bit indicate*/
275 /* number of packets in tx buffer*/
276 /* Node ID registers (DLCR8-13) */
277 #define NODE_ID_0 8
278 #define NODE_ID_RB 0
279
280 /* Hash Table registers (HT8-15) */
281 #define HASH_TABLE_0 8
282 #define HASH_TABLE_RB 1
283
284 /* Buffer memory ports */
285 #define BUFFER_MEM_PORT_LB 8
286 #define DATAPORT BUFFER_MEM_PORT_LB
287 #define BUFFER_MEM_PORT_HB 9
288
289 /* 16 Collision control register (BMPR11) */
290 #define COL_16_REG 11
291 #define HALT_ON_16 0x00
292 #define RETRANS_AND_HALT_ON_16 0x02
293
294 /* Maximum number of attempts to send after 16 concecutive collisions */
295 #define MAX_COL_16 10
296
297 /* DMA Burst and Transceiver Mode Register (BMPR13) */
298 #define TRANSCEIVER_MODE_REG 13
299 #define TRANSCEIVER_MODE_RB 2
300 #define IO_BASE_UNLOCK BIT(7)
301 #define LOWER_SQUELCH_TRESH BIT(6)
302 #define LINK_TEST_DISABLE BIT(5)
303 #define AUI_SELECT BIT(4)
304 #define DIS_AUTO_PORT_SEL BIT(3)
305
306 /* Filter Self Receive Register (BMPR14) */
307 #define FILTER_SELF_RX_REG 14
308 #define SKIP_RX_PACKET BIT(2)
309 #define FILTER_SELF_RECEIVE BIT(0)
310
311 /* EEPROM Control Register (BMPR 16) */
312 #define EEPROM_CTRL_REG 16
313
314 /* EEPROM Data Register (BMPR 17) */
315 #define EEPROM_DATA_REG 17
316
317 /* NMC93CSx6 EEPROM Control Bits */
318 #define CS_0 0x00
319 #define CS_1 0x20
320 #define SK_0 0x00
321 #define SK_1 0x40
322 #define DI_0 0x00
323 #define DI_1 0x80
324
325 /* NMC93CSx6 EEPROM Instructions */
326 #define EEPROM_READ 0x80
327
328 /* NMC93CSx6 EEPROM Addresses */
329 #define E_NODEID_0 0x02
330 #define E_NODEID_1 0x03
331 #define E_NODEID_2 0x04
332 #define E_PORT_SELECT 0x14
333 #define E_PORT_BNC 0x00
334 #define E_PORT_DIX 0x01
335 #define E_PORT_TP 0x02
336 #define E_PORT_AUTO 0x03
337 #define E_PORT_FROM_EPROM 0x04
338 #define E_PRODUCT_CFG 0x30
339
340
341 /* Macro to slow down io between EEPROM clock transitions */
342 #define eeprom_slow_io() do { int _i = 40; while(--_i > 0) { inb(0x80); }}while(0)
343
344 /* Jumperless Configuration Register (BMPR19) */
345 #define JUMPERLESS_CONFIG 19
346
347 /* ID ROM registers, writing to them also resets some parts of chip */
348 #define ID_ROM_0 24
349 #define ID_ROM_7 31
350 #define RESET ID_ROM_0
351
352 /* This is the I/O address list to be probed when seeking the card */
353 static unsigned int eth16i_portlist[] __initdata = {
354 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
355 };
356
357 static unsigned int eth32i_portlist[] __initdata = {
358 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0x7000, 0x8000,
359 0x9000, 0xA000, 0xB000, 0xC000, 0xD000, 0xE000, 0xF000, 0
360 };
361
362 /* This is the Interrupt lookup table for Eth16i card */
363 static unsigned int eth16i_irqmap[] __initdata = { 9, 10, 5, 15, 0 };
364 #define NUM_OF_ISA_IRQS 4
365
366 /* This is the Interrupt lookup table for Eth32i card */
367 static unsigned int eth32i_irqmap[] __initdata = { 3, 5, 7, 9, 10, 11, 12, 15, 0 };
368 #define EISA_IRQ_REG 0xc89
369 #define NUM_OF_EISA_IRQS 8
370
371 static unsigned int eth16i_tx_buf_map[] = { 2048, 2048, 4096, 8192 };
372
373 /* Use 0 for production, 1 for verification, >2 for debug */
374 #ifndef ETH16I_DEBUG
375 #define ETH16I_DEBUG 0
376 #endif
377 static unsigned int eth16i_debug = ETH16I_DEBUG;
378
379 /* Information for each board */
380
381 struct eth16i_local {
382 unsigned char tx_started;
383 unsigned char tx_buf_busy;
384 unsigned short tx_queue; /* Number of packets in transmit buffer */
385 unsigned short tx_queue_len;
386 unsigned int tx_buf_size;
387 unsigned long open_time;
388 unsigned long tx_buffered_packets;
389 unsigned long tx_buffered_bytes;
390 unsigned long col_16;
391 spinlock_t lock;
392 };
393
394 /* Function prototypes */
395
396 static int eth16i_probe1(struct net_device *dev, int ioaddr);
397 static int eth16i_check_signature(int ioaddr);
398 static int eth16i_probe_port(int ioaddr);
399 static void eth16i_set_port(int ioaddr, int porttype);
400 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l);
401 static int eth16i_receive_probe_packet(int ioaddr);
402 static int eth16i_get_irq(int ioaddr);
403 static int eth16i_read_eeprom(int ioaddr, int offset);
404 static int eth16i_read_eeprom_word(int ioaddr);
405 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command);
406 static int eth16i_open(struct net_device *dev);
407 static int eth16i_close(struct net_device *dev);
408 static int eth16i_tx(struct sk_buff *skb, struct net_device *dev);
409 static void eth16i_rx(struct net_device *dev);
410 static void eth16i_timeout(struct net_device *dev);
411 static irqreturn_t eth16i_interrupt(int irq, void *dev_id);
412 static void eth16i_reset(struct net_device *dev);
413 static void eth16i_timeout(struct net_device *dev);
414 static void eth16i_skip_packet(struct net_device *dev);
415 static void eth16i_multicast(struct net_device *dev);
416 static void eth16i_select_regbank(unsigned char regbank, int ioaddr);
417 static void eth16i_initialize(struct net_device *dev, int boot);
418
419 #if 0
420 static int eth16i_set_irq(struct net_device *dev);
421 #endif
422
423 #ifdef MODULE
424 static ushort eth16i_parse_mediatype(const char* s);
425 #endif
426
427 static char cardname[] __initdata = "ICL EtherTeam 16i/32";
428
429 static int __init do_eth16i_probe(struct net_device *dev)
430 {
431 int i;
432 int ioaddr;
433 int base_addr = dev->base_addr;
434
435 if(eth16i_debug > 4)
436 printk(KERN_DEBUG "Probing started for %s\n", cardname);
437
438 if(base_addr > 0x1ff) /* Check only single location */
439 return eth16i_probe1(dev, base_addr);
440 else if(base_addr != 0) /* Don't probe at all */
441 return -ENXIO;
442
443 /* Seek card from the ISA io address space */
444 for(i = 0; (ioaddr = eth16i_portlist[i]) ; i++)
445 if(eth16i_probe1(dev, ioaddr) == 0)
446 return 0;
447
448 /* Seek card from the EISA io address space */
449 for(i = 0; (ioaddr = eth32i_portlist[i]) ; i++)
450 if(eth16i_probe1(dev, ioaddr) == 0)
451 return 0;
452
453 return -ENODEV;
454 }
455
456 #ifndef MODULE
457 struct net_device * __init eth16i_probe(int unit)
458 {
459 struct net_device *dev = alloc_etherdev(sizeof(struct eth16i_local));
460 int err;
461
462 if (!dev)
463 return ERR_PTR(-ENOMEM);
464
465 sprintf(dev->name, "eth%d", unit);
466 netdev_boot_setup_check(dev);
467
468 err = do_eth16i_probe(dev);
469 if (err)
470 goto out;
471 return dev;
472 out:
473 free_netdev(dev);
474 return ERR_PTR(err);
475 }
476 #endif
477
478 static const struct net_device_ops eth16i_netdev_ops = {
479 .ndo_open = eth16i_open,
480 .ndo_stop = eth16i_close,
481 .ndo_start_xmit = eth16i_tx,
482 .ndo_set_multicast_list = eth16i_multicast,
483 .ndo_tx_timeout = eth16i_timeout,
484 .ndo_change_mtu = eth_change_mtu,
485 .ndo_set_mac_address = eth_mac_addr,
486 .ndo_validate_addr = eth_validate_addr,
487 };
488
489 static int __init eth16i_probe1(struct net_device *dev, int ioaddr)
490 {
491 struct eth16i_local *lp = netdev_priv(dev);
492 static unsigned version_printed;
493 int retval;
494
495 /* Let's grab the region */
496 if (!request_region(ioaddr, ETH16I_IO_EXTENT, cardname))
497 return -EBUSY;
498
499 /*
500 The MB86985 chip has on register which holds information in which
501 io address the chip lies. First read this register and compare
502 it to our current io address and if match then this could
503 be our chip.
504 */
505
506 if(ioaddr < 0x1000) {
507 if(eth16i_portlist[(inb(ioaddr + JUMPERLESS_CONFIG) & 0x07)]
508 != ioaddr) {
509 retval = -ENODEV;
510 goto out;
511 }
512 }
513
514 /* Now we will go a bit deeper and try to find the chip's signature */
515
516 if(eth16i_check_signature(ioaddr) != 0) {
517 retval = -ENODEV;
518 goto out;
519 }
520
521 /*
522 Now it seems that we have found a ethernet chip in this particular
523 ioaddr. The MB86985 chip has this feature, that when you read a
524 certain register it will increase it's io base address to next
525 configurable slot. Now when we have found the chip, first thing is
526 to make sure that the chip's ioaddr will hold still here.
527 */
528
529 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
530 outb(0x00, ioaddr + TRANSCEIVER_MODE_REG);
531
532 outb(0x00, ioaddr + RESET); /* Reset some parts of chip */
533 BITSET(ioaddr + CONFIG_REG_0, BIT(7)); /* Disable the data link */
534
535 if( (eth16i_debug & version_printed++) == 0)
536 printk(KERN_INFO "%s", version);
537
538 dev->base_addr = ioaddr;
539 dev->irq = eth16i_get_irq(ioaddr);
540
541 /* Try to obtain interrupt vector */
542
543 if ((retval = request_irq(dev->irq, (void *)ð16i_interrupt, 0, cardname, dev))) {
544 printk(KERN_WARNING "%s at %#3x, but is unusable due to conflicting IRQ %d.\n",
545 cardname, ioaddr, dev->irq);
546 goto out;
547 }
548
549 printk(KERN_INFO "%s: %s at %#3x, IRQ %d, ",
550 dev->name, cardname, ioaddr, dev->irq);
551
552
553 /* Now we will have to lock the chip's io address */
554 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
555 outb(0x38, ioaddr + TRANSCEIVER_MODE_REG);
556
557 eth16i_initialize(dev, 1); /* Initialize rest of the chip's registers */
558
559 /* Now let's same some energy by shutting down the chip ;) */
560 BITCLR(ioaddr + CONFIG_REG_1, POWERUP);
561
562 /* Initialize the device structure */
563 dev->netdev_ops = ð16i_netdev_ops;
564 dev->watchdog_timeo = TX_TIMEOUT;
565 spin_lock_init(&lp->lock);
566
567 retval = register_netdev(dev);
568 if (retval)
569 goto out1;
570 return 0;
571 out1:
572 free_irq(dev->irq, dev);
573 out:
574 release_region(ioaddr, ETH16I_IO_EXTENT);
575 return retval;
576 }
577
578
579 static void eth16i_initialize(struct net_device *dev, int boot)
580 {
581 int ioaddr = dev->base_addr;
582 int i, node_w = 0;
583 unsigned char node_byte = 0;
584
585 /* Setup station address */
586 eth16i_select_regbank(NODE_ID_RB, ioaddr);
587 for(i = 0 ; i < 3 ; i++) {
588 unsigned short node_val = eth16i_read_eeprom(ioaddr, E_NODEID_0 + i);
589 ((unsigned short *)dev->dev_addr)[i] = ntohs(node_val);
590 }
591
592 for(i = 0; i < 6; i++) {
593 outb( ((unsigned char *)dev->dev_addr)[i], ioaddr + NODE_ID_0 + i);
594 if(boot) {
595 printk("%02x", inb(ioaddr + NODE_ID_0 + i));
596 if(i != 5)
597 printk(":");
598 }
599 }
600
601 /* Now we will set multicast addresses to accept none */
602 eth16i_select_regbank(HASH_TABLE_RB, ioaddr);
603 for(i = 0; i < 8; i++)
604 outb(0x00, ioaddr + HASH_TABLE_0 + i);
605
606 /*
607 Now let's disable the transmitter and receiver, set the buffer ram
608 cycle time, bus width and buffer data path width. Also we shall
609 set transmit buffer size and total buffer size.
610 */
611
612 eth16i_select_regbank(2, ioaddr);
613
614 node_byte = 0;
615 node_w = eth16i_read_eeprom(ioaddr, E_PRODUCT_CFG);
616
617 if( (node_w & 0xFF00) == 0x0800)
618 node_byte |= BUFFER_WIDTH_8;
619
620 node_byte |= SRAM_BS1;
621
622 if( (node_w & 0x00FF) == 64)
623 node_byte |= SRAM_BS0;
624
625 node_byte |= DLC_EN | SRAM_CYCLE_TIME_100NS | (ETH16I_TX_BUF_SIZE << 2);
626
627 outb(node_byte, ioaddr + CONFIG_REG_0);
628
629 /* We shall halt the transmitting, if 16 collisions are detected */
630 outb(HALT_ON_16, ioaddr + COL_16_REG);
631
632 #ifdef MODULE
633 /* if_port already set by init_module() */
634 #else
635 dev->if_port = (dev->mem_start < E_PORT_FROM_EPROM) ?
636 dev->mem_start : E_PORT_FROM_EPROM;
637 #endif
638
639 /* Set interface port type */
640 if(boot) {
641 char *porttype[] = {"BNC", "DIX", "TP", "AUTO", "FROM_EPROM" };
642
643 switch(dev->if_port)
644 {
645
646 case E_PORT_FROM_EPROM:
647 dev->if_port = eth16i_read_eeprom(ioaddr, E_PORT_SELECT);
648 break;
649
650 case E_PORT_AUTO:
651 dev->if_port = eth16i_probe_port(ioaddr);
652 break;
653
654 case E_PORT_BNC:
655 case E_PORT_TP:
656 case E_PORT_DIX:
657 break;
658 }
659
660 printk(" %s interface.\n", porttype[dev->if_port]);
661
662 eth16i_set_port(ioaddr, dev->if_port);
663 }
664
665 /* Set Receive Mode to normal operation */
666 outb(MODE_2, ioaddr + RECEIVE_MODE_REG);
667 }
668
669 static int eth16i_probe_port(int ioaddr)
670 {
671 int i;
672 int retcode;
673 unsigned char dummy_packet[64];
674
675 /* Powerup the chip */
676 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
677
678 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
679
680 eth16i_select_regbank(NODE_ID_RB, ioaddr);
681
682 for(i = 0; i < 6; i++) {
683 dummy_packet[i] = inb(ioaddr + NODE_ID_0 + i);
684 dummy_packet[i+6] = inb(ioaddr + NODE_ID_0 + i);
685 }
686
687 dummy_packet[12] = 0x00;
688 dummy_packet[13] = 0x04;
689 memset(dummy_packet + 14, 0, sizeof(dummy_packet) - 14);
690
691 eth16i_select_regbank(2, ioaddr);
692
693 for(i = 0; i < 3; i++) {
694 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
695 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
696 eth16i_set_port(ioaddr, i);
697
698 if(eth16i_debug > 1)
699 printk(KERN_DEBUG "Set port number %d\n", i);
700
701 retcode = eth16i_send_probe_packet(ioaddr, dummy_packet, 64);
702 if(retcode == 0) {
703 retcode = eth16i_receive_probe_packet(ioaddr);
704 if(retcode != -1) {
705 if(eth16i_debug > 1)
706 printk(KERN_DEBUG "Eth16i interface port found at %d\n", i);
707 return i;
708 }
709 }
710 else {
711 if(eth16i_debug > 1)
712 printk(KERN_DEBUG "TRANSMIT_DONE timeout when probing interface port\n");
713 }
714 }
715
716 if( eth16i_debug > 1)
717 printk(KERN_DEBUG "Using default port\n");
718
719 return E_PORT_BNC;
720 }
721
722 static void eth16i_set_port(int ioaddr, int porttype)
723 {
724 unsigned short temp = 0;
725
726 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
727 outb(LOOPBACK_CONTROL, ioaddr + TRANSMIT_MODE_REG);
728
729 temp |= DIS_AUTO_PORT_SEL;
730
731 switch(porttype) {
732
733 case E_PORT_BNC :
734 temp |= AUI_SELECT;
735 break;
736
737 case E_PORT_TP :
738 break;
739
740 case E_PORT_DIX :
741 temp |= AUI_SELECT;
742 BITSET(ioaddr + TRANSMIT_MODE_REG, CONTROL_OUTPUT);
743 break;
744 }
745
746 outb(temp, ioaddr + TRANSCEIVER_MODE_REG);
747
748 if(eth16i_debug > 1) {
749 printk(KERN_DEBUG "TRANSMIT_MODE_REG = %x\n", inb(ioaddr + TRANSMIT_MODE_REG));
750 printk(KERN_DEBUG "TRANSCEIVER_MODE_REG = %x\n",
751 inb(ioaddr+TRANSCEIVER_MODE_REG));
752 }
753 }
754
755 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l)
756 {
757 unsigned long starttime;
758
759 outb(0xff, ioaddr + TX_STATUS_REG);
760
761 outw(l, ioaddr + DATAPORT);
762 outsw(ioaddr + DATAPORT, (unsigned short *)b, (l + 1) >> 1);
763
764 starttime = jiffies;
765 outb(TX_START | 1, ioaddr + TRANSMIT_START_REG);
766
767 while( (inb(ioaddr + TX_STATUS_REG) & 0x80) == 0) {
768 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
769 return -1;
770 }
771 }
772
773 return 0;
774 }
775
776 static int eth16i_receive_probe_packet(int ioaddr)
777 {
778 unsigned long starttime;
779
780 starttime = jiffies;
781
782 while((inb(ioaddr + TX_STATUS_REG) & 0x20) == 0) {
783 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
784
785 if(eth16i_debug > 1)
786 printk(KERN_DEBUG "Timeout occurred waiting transmit packet received\n");
787 starttime = jiffies;
788 while((inb(ioaddr + RX_STATUS_REG) & 0x80) == 0) {
789 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
790 if(eth16i_debug > 1)
791 printk(KERN_DEBUG "Timeout occurred waiting receive packet\n");
792 return -1;
793 }
794 }
795
796 if(eth16i_debug > 1)
797 printk(KERN_DEBUG "RECEIVE_PACKET\n");
798 return(0); /* Found receive packet */
799 }
800 }
801
802 if(eth16i_debug > 1) {
803 printk(KERN_DEBUG "TRANSMIT_PACKET_RECEIVED %x\n", inb(ioaddr + TX_STATUS_REG));
804 printk(KERN_DEBUG "RX_STATUS_REG = %x\n", inb(ioaddr + RX_STATUS_REG));
805 }
806
807 return(0); /* Return success */
808 }
809
810 #if 0
811 static int eth16i_set_irq(struct net_device* dev)
812 {
813 const int ioaddr = dev->base_addr;
814 const int irq = dev->irq;
815 int i = 0;
816
817 if(ioaddr < 0x1000) {
818 while(eth16i_irqmap[i] && eth16i_irqmap[i] != irq)
819 i++;
820
821 if(i < NUM_OF_ISA_IRQS) {
822 u8 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
823 cbyte = (cbyte & 0x3F) | (i << 6);
824 outb(cbyte, ioaddr + JUMPERLESS_CONFIG);
825 return 0;
826 }
827 }
828 else {
829 printk(KERN_NOTICE "%s: EISA Interrupt cannot be set. Use EISA Configuration utility.\n", dev->name);
830 }
831
832 return -1;
833
834 }
835 #endif
836
837 static int __init eth16i_get_irq(int ioaddr)
838 {
839 unsigned char cbyte;
840
841 if( ioaddr < 0x1000) {
842 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
843 return( eth16i_irqmap[ ((cbyte & 0xC0) >> 6) ] );
844 } else { /* Oh..the card is EISA so method getting IRQ different */
845 unsigned short index = 0;
846 cbyte = inb(ioaddr + EISA_IRQ_REG);
847 while( (cbyte & 0x01) == 0) {
848 cbyte = cbyte >> 1;
849 index++;
850 }
851 return( eth32i_irqmap[ index ] );
852 }
853 }
854
855 static int __init eth16i_check_signature(int ioaddr)
856 {
857 int i;
858 unsigned char creg[4] = { 0 };
859
860 for(i = 0; i < 4 ; i++) {
861
862 creg[i] = inb(ioaddr + TRANSMIT_MODE_REG + i);
863
864 if(eth16i_debug > 1)
865 printk("eth16i: read signature byte %x at %x\n",
866 creg[i],
867 ioaddr + TRANSMIT_MODE_REG + i);
868 }
869
870 creg[0] &= 0x0F; /* Mask collision cnr */
871 creg[2] &= 0x7F; /* Mask DCLEN bit */
872
873 #if 0
874 /*
875 This was removed because the card was sometimes left to state
876 from which it couldn't be find anymore. If there is need
877 to more strict check still this have to be fixed.
878 */
879 if( ! ((creg[0] == 0x06) && (creg[1] == 0x41)) ) {
880 if(creg[1] != 0x42)
881 return -1;
882 }
883 #endif
884
885 if( !((creg[2] == 0x36) && (creg[3] == 0xE0)) ) {
886 creg[2] &= 0x40;
887 creg[3] &= 0x03;
888
889 if( !((creg[2] == 0x40) && (creg[3] == 0x00)) )
890 return -1;
891 }
892
893 if(eth16i_read_eeprom(ioaddr, E_NODEID_0) != 0)
894 return -1;
895
896 if((eth16i_read_eeprom(ioaddr, E_NODEID_1) & 0xFF00) != 0x4B00)
897 return -1;
898
899 return 0;
900 }
901
902 static int eth16i_read_eeprom(int ioaddr, int offset)
903 {
904 int data = 0;
905
906 eth16i_eeprom_cmd(ioaddr, EEPROM_READ | offset);
907 outb(CS_1, ioaddr + EEPROM_CTRL_REG);
908 data = eth16i_read_eeprom_word(ioaddr);
909 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
910
911 return(data);
912 }
913
914 static int eth16i_read_eeprom_word(int ioaddr)
915 {
916 int i;
917 int data = 0;
918
919 for(i = 16; i > 0; i--) {
920 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
921 eeprom_slow_io();
922 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
923 eeprom_slow_io();
924 data = (data << 1) |
925 ((inb(ioaddr + EEPROM_DATA_REG) & DI_1) ? 1 : 0);
926
927 eeprom_slow_io();
928 }
929
930 return(data);
931 }
932
933 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command)
934 {
935 int i;
936
937 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
938 outb(DI_0, ioaddr + EEPROM_DATA_REG);
939 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
940 outb(DI_1, ioaddr + EEPROM_DATA_REG);
941 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
942
943 for(i = 7; i >= 0; i--) {
944 short cmd = ( (command & (1 << i)) ? DI_1 : DI_0 );
945 outb(cmd, ioaddr + EEPROM_DATA_REG);
946 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
947 eeprom_slow_io();
948 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
949 eeprom_slow_io();
950 }
951 }
952
953 static int eth16i_open(struct net_device *dev)
954 {
955 struct eth16i_local *lp = netdev_priv(dev);
956 int ioaddr = dev->base_addr;
957
958 /* Powerup the chip */
959 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
960
961 /* Initialize the chip */
962 eth16i_initialize(dev, 0);
963
964 /* Set the transmit buffer size */
965 lp->tx_buf_size = eth16i_tx_buf_map[ETH16I_TX_BUF_SIZE & 0x03];
966
967 if(eth16i_debug > 0)
968 printk(KERN_DEBUG "%s: transmit buffer size %d\n",
969 dev->name, lp->tx_buf_size);
970
971 /* Now enable Transmitter and Receiver sections */
972 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
973
974 /* Now switch to register bank 2, for run time operation */
975 eth16i_select_regbank(2, ioaddr);
976
977 lp->open_time = jiffies;
978 lp->tx_started = 0;
979 lp->tx_queue = 0;
980 lp->tx_queue_len = 0;
981
982 /* Turn on interrupts*/
983 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
984
985 netif_start_queue(dev);
986 return 0;
987 }
988
989 static int eth16i_close(struct net_device *dev)
990 {
991 struct eth16i_local *lp = netdev_priv(dev);
992 int ioaddr = dev->base_addr;
993
994 eth16i_reset(dev);
995
996 /* Turn off interrupts*/
997 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
998
999 netif_stop_queue(dev);
1000
1001 lp->open_time = 0;
1002
1003 /* Disable transmit and receive */
1004 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1005
1006 /* Reset the chip */
1007 /* outb(0xff, ioaddr + RESET); */
1008 /* outw(0xffff, ioaddr + TX_STATUS_REG); */
1009
1010 outb(0x00, ioaddr + CONFIG_REG_1);
1011
1012 return 0;
1013 }
1014
1015 static void eth16i_timeout(struct net_device *dev)
1016 {
1017 struct eth16i_local *lp = netdev_priv(dev);
1018 int ioaddr = dev->base_addr;
1019 /*
1020 If we get here, some higher level has decided that
1021 we are broken. There should really be a "kick me"
1022 function call instead.
1023 */
1024
1025 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1026 printk(KERN_WARNING "%s: transmit timed out with status %04x, %s ?\n",
1027 dev->name,
1028 inw(ioaddr + TX_STATUS_REG), (inb(ioaddr + TX_STATUS_REG) & TX_DONE) ?
1029 "IRQ conflict" : "network cable problem");
1030
1031 dev->trans_start = jiffies;
1032
1033 /* Let's dump all registers */
1034 if(eth16i_debug > 0) {
1035 printk(KERN_DEBUG "%s: timeout: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
1036 dev->name, inb(ioaddr + 0),
1037 inb(ioaddr + 1), inb(ioaddr + 2),
1038 inb(ioaddr + 3), inb(ioaddr + 4),
1039 inb(ioaddr + 5),
1040 inb(ioaddr + 6), inb(ioaddr + 7));
1041
1042 printk(KERN_DEBUG "%s: transmit start reg: %02x. collision reg %02x\n",
1043 dev->name, inb(ioaddr + TRANSMIT_START_REG),
1044 inb(ioaddr + COL_16_REG));
1045 printk(KERN_DEBUG "lp->tx_queue = %d\n", lp->tx_queue);
1046 printk(KERN_DEBUG "lp->tx_queue_len = %d\n", lp->tx_queue_len);
1047 printk(KERN_DEBUG "lp->tx_started = %d\n", lp->tx_started);
1048 }
1049 dev->stats.tx_errors++;
1050 eth16i_reset(dev);
1051 dev->trans_start = jiffies;
1052 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1053 netif_wake_queue(dev);
1054 }
1055
1056 static int eth16i_tx(struct sk_buff *skb, struct net_device *dev)
1057 {
1058 struct eth16i_local *lp = netdev_priv(dev);
1059 int ioaddr = dev->base_addr;
1060 int status = 0;
1061 ushort length = skb->len;
1062 unsigned char *buf;
1063 unsigned long flags;
1064
1065 if (length < ETH_ZLEN) {
1066 if (skb_padto(skb, ETH_ZLEN))
1067 return 0;
1068 length = ETH_ZLEN;
1069 }
1070 buf = skb->data;
1071
1072 netif_stop_queue(dev);
1073
1074 /* Turn off TX interrupts */
1075 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1076
1077 /* We would be better doing the disable_irq tricks the 3c509 does,
1078 that would make this suck a lot less */
1079
1080 spin_lock_irqsave(&lp->lock, flags);
1081
1082 if( (length + 2) > (lp->tx_buf_size - lp->tx_queue_len)) {
1083 if(eth16i_debug > 0)
1084 printk(KERN_WARNING "%s: Transmit buffer full.\n", dev->name);
1085 }
1086 else {
1087 outw(length, ioaddr + DATAPORT);
1088
1089 if( ioaddr < 0x1000 )
1090 outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
1091 else {
1092 unsigned char frag = length % 4;
1093 outsl(ioaddr + DATAPORT, buf, length >> 2);
1094 if( frag != 0 ) {
1095 outsw(ioaddr + DATAPORT, (buf + (length & 0xFFFC)), 1);
1096 if( frag == 3 )
1097 outsw(ioaddr + DATAPORT,
1098 (buf + (length & 0xFFFC) + 2), 1);
1099 }
1100 }
1101 lp->tx_buffered_packets++;
1102 lp->tx_buffered_bytes = length;
1103 lp->tx_queue++;
1104 lp->tx_queue_len += length + 2;
1105 }
1106 lp->tx_buf_busy = 0;
1107
1108 if(lp->tx_started == 0) {
1109 /* If the transmitter is idle..always trigger a transmit */
1110 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1111 lp->tx_queue = 0;
1112 lp->tx_queue_len = 0;
1113 dev->trans_start = jiffies;
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 /* There is still more room for one more packet in tx buffer */
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 /* Turn TX interrupts back on */
1126 /* outb(TX_INTR_DONE | TX_INTR_16_COL, ioaddr + TX_INTR_REG); */
1127 status = 0;
1128 dev_kfree_skb(skb);
1129 return 0;
1130 }
1131
1132 static void eth16i_rx(struct net_device *dev)
1133 {
1134 int ioaddr = dev->base_addr;
1135 int boguscount = MAX_RX_LOOP;
1136
1137 /* Loop until all packets have been read */
1138 while( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) {
1139
1140 /* Read status byte from receive buffer */
1141 ushort status = inw(ioaddr + DATAPORT);
1142
1143 /* Get the size of the packet from receive buffer */
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 { /* Ok so now we should have a good packet */
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 Now let's get the packet out of buffer.
1180 size is (pkt_len + 1) >> 1, cause we are now reading words
1181 and it have to be even aligned.
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 } /* else */
1218
1219 if(--boguscount <= 0)
1220 break;
1221
1222 } /* while */
1223 }
1224
1225 static 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 /* Turn off all interrupts from adapter */
1236 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1237
1238 /* eth16i_tx won't be called */
1239 spin_lock(&lp->lock);
1240
1241 status = inw(ioaddr + TX_STATUS_REG); /* Get the status */
1242 outw(status, ioaddr + TX_STATUS_REG); /* Clear status bits */
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 /* Resume transmitting, skip failed packet */
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 ) { /* Let's check the transmit status reg */
1288
1289 if(status & TX_DONE) { /* The transmit has been 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) { /* Is there still packets ? */
1295 /* There was packet(s) so start transmitting and write also
1296 how many packets there is to be sended */
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); /* We have packet in receive buffer */
1312 }
1313
1314 /* Turn interrupts back on */
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 /* There is still more room for one more packet in tx buffer */
1319 netif_wake_queue(dev);
1320 }
1321
1322 spin_unlock(&lp->lock);
1323
1324 return IRQ_RETVAL(handled);
1325 }
1326
1327 static 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
1339 static 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
1358 static void eth16i_multicast(struct net_device *dev)
1359 {
1360 int ioaddr = dev->base_addr;
1361
1362 if(dev->mc_count || 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
1370 static 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
1380 static 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 /* Max number of Eth16i cards per module */
1398
1399 static struct net_device *dev_eth16i[MAX_ETH16I_CARDS];
1400 static int io[MAX_ETH16I_CARDS];
1401 #if 0
1402 static int irq[MAX_ETH16I_CARDS];
1403 #endif
1404 static char* mediatype[MAX_ETH16I_CARDS];
1405 static int debug = -1;
1406
1407 MODULE_AUTHOR("Mika Kuoppala <miku@iki.fi>");
1408 MODULE_DESCRIPTION("ICL EtherTeam 16i/32 driver");
1409 MODULE_LICENSE("GPL");
1410
1411
1412 module_param_array(io, int, NULL, 0);
1413 MODULE_PARM_DESC(io, "eth16i I/O base address(es)");
1414
1415 #if 0
1416 module_param_array(irq, int, NULL, 0);
1417 MODULE_PARM_DESC(irq, "eth16i interrupt request number");
1418 #endif
1419
1420 module_param_array(mediatype, charp, NULL, 0);
1421 MODULE_PARM_DESC(mediatype, "eth16i media type of interface(s) (bnc,tp,dix,auto,eprom)");
1422
1423 module_param(debug, int, 0);
1424 MODULE_PARM_DESC(debug, "eth16i debug level (0-6)");
1425
1426 int __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) /* Only autoprobe 1st one */
1448 break;
1449
1450 printk(KERN_NOTICE "eth16i.c: Presently autoprobing (not recommended) for a single card.\n");
1451 }
1452
1453 if (do_eth16i_probe(dev) == 0) {
1454 dev_eth16i[found++] = dev;
1455 continue;
1456 }
1457 printk(KERN_WARNING "eth16i.c No Eth16i card found (i/o = 0x%x).\n",
1458 io[this_dev]);
1459 free_netdev(dev);
1460 break;
1461 }
1462 if (found)
1463 return 0;
1464 return -ENXIO;
1465 }
1466
1467 void __exit cleanup_module(void)
1468 {
1469 int this_dev;
1470
1471 for(this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1472 struct net_device *dev = dev_eth16i[this_dev];
1473
1474 if (netdev_priv(dev)) {
1475 unregister_netdev(dev);
1476 free_irq(dev->irq, dev);
1477 release_region(dev->base_addr, ETH16I_IO_EXTENT);
1478 free_netdev(dev);
1479 }
1480 }
1481 }
1482 #endif /* MODULE */
1483
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