1 /* eth16i.c An ICL EtherTeam 16i and 32 EISA ethernet driver for Linux
3 Written 1994-1999 by Mika Kuoppala
5 Copyright (C) 1994-1999 by Mika Kuoppala
6 Based on skeleton.c and heavily on at1700.c by Donald Becker
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
11 The author may be reached as miku@iki.fi
13 This driver supports following cards :
15 - ICL EtherTeam 32 EISA
16 (Uses true 32 bit transfers rather than 16i compability mode)
19 insmod eth16i.o io=0x2a0 mediatype=bnc
21 mediatype can be one of the following: bnc,tp,dix,auto,eprom
23 'auto' will try to autoprobe mediatype.
24 'eprom' will use whatever type defined in eprom.
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.
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
34 - e16iSRV.asm a Netware 3.X Server Driver for ICL EtherTeam16i
35 written by Markku Viima
36 - The Fujitsu MB86965 databook.
38 Author thanks following persons due to their valueble assistance:
42 Kurt Huwig <kurt@huwig.de>
46 Version Date Description
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
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
65 0.08 23.06-95 Wrote part that tries to probe used interface
66 port if AUTO is selected
68 0.09 01.09-95 Added module support
70 0.10 04.09-95 Fixed receive packet allocation to work
73 0.20 20.09-95 Added support for EtherTeam32 EISA
75 0.21 17.10-95 Removed the unnecessary extern
76 init_etherdev() declaration. Some
79 0.22 22.02-96 Receive buffer was not flushed
80 correctly when faulty packet was
83 0.23 26.02-96 Made resetting the adapter
86 0.24 27.02-96 Rewrote faulty packet handling in eth16i_rx
88 0.25 22.05-96 kfree() was missing from cleanup_module.
90 0.26 11.06-96 Sometimes card was not found by
91 check_signature(). Now made more reliable.
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.
97 0.28 28.10-97 Added dev_id parameter (NULL) for free_irq
99 0.29 29.10-97 Multiple card support for module users
101 0.30 30.10-97 Fixed irq allocation bug.
102 (request_irq moved from probe to open)
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>
109 0.31 28.08-98 Media interface port can now be selected
110 with module parameters or kernel
113 0.32 31.08-98 IRQ was never freed if open/close
114 pair wasn't called. Now fixed.
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
121 0.34 29.06-99 Fixed one bad #ifdef.
122 Changed ioaddr -> io for consistency
124 0.35 01.07-99 transmit,-receive bytes were never
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).
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.
145 static char *version =
146 "eth16i.c: v0.35 01-Jul-1999 Mika Kuoppala (miku@iki.fi)\n";
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>
167 #include <asm/system.h>
173 #define BIT(a) ( (1 << (a)) )
174 #define BITSET(ioaddr, bnum) ((outb(((inb(ioaddr)) | (bnum)), ioaddr)))
175 #define BITCLR(ioaddr, bnum) ((outb(((inb(ioaddr)) & (~(bnum))), ioaddr)))
177 /* This is the I/O address space for Etherteam 16i adapter. */
178 #define ETH16I_IO_EXTENT 32
180 /* Ticks before deciding that transmit has timed out */
181 #define TX_TIMEOUT (400*HZ/1000)
183 /* Maximum loop count when receiving packets */
184 #define MAX_RX_LOOP 20
186 /* Some interrupt masks */
187 #define ETH16I_INTR_ON 0xef8a /* Higher is receive mask */
188 #define ETH16I_INTR_OFF 0x0000
190 /* Buffers header status byte meanings */
191 #define PKT_GOOD BIT(5)
192 #define PKT_GOOD_RMT BIT(4)
193 #define PKT_SHORT BIT(3)
194 #define PKT_ALIGN_ERR BIT(2)
195 #define PKT_CRC_ERR BIT(1)
196 #define PKT_RX_BUF_OVERFLOW BIT(0)
198 /* Transmit status register (DLCR0) */
199 #define TX_STATUS_REG 0
200 #define TX_DONE BIT(7)
201 #define NET_BUSY BIT(6)
202 #define TX_PKT_RCD BIT(5)
203 #define CR_LOST BIT(4)
204 #define TX_JABBER_ERR BIT(3)
205 #define COLLISION BIT(2)
206 #define COLLISIONS_16 BIT(1)
208 /* Receive status register (DLCR1) */
209 #define RX_STATUS_REG 1
210 #define RX_PKT BIT(7) /* Packet received */
211 #define BUS_RD_ERR BIT(6)
212 #define SHORT_PKT_ERR BIT(3)
213 #define ALIGN_ERR BIT(2)
214 #define CRC_ERR BIT(1)
215 #define RX_BUF_OVERFLOW BIT(0)
217 /* Transmit Interrupt Enable Register (DLCR2) */
218 #define TX_INTR_REG 2
219 #define TX_INTR_DONE BIT(7)
220 #define TX_INTR_COL BIT(2)
221 #define TX_INTR_16_COL BIT(1)
223 /* Receive Interrupt Enable Register (DLCR3) */
224 #define RX_INTR_REG 3
225 #define RX_INTR_RECEIVE BIT(7)
226 #define RX_INTR_SHORT_PKT BIT(3)
227 #define RX_INTR_CRC_ERR BIT(1)
228 #define RX_INTR_BUF_OVERFLOW BIT(0)
230 /* Transmit Mode Register (DLCR4) */
231 #define TRANSMIT_MODE_REG 4
232 #define LOOPBACK_CONTROL BIT(1)
233 #define CONTROL_OUTPUT BIT(2)
235 /* Receive Mode Register (DLCR5) */
236 #define RECEIVE_MODE_REG 5
237 #define RX_BUFFER_EMPTY BIT(6)
238 #define ACCEPT_BAD_PACKETS BIT(5)
239 #define RECEIVE_SHORT_ADDR BIT(4)
240 #define ACCEPT_SHORT_PACKETS BIT(3)
241 #define REMOTE_RESET BIT(2)
243 #define ADDRESS_FILTER_MODE BIT(1) | BIT(0)
246 #define MODE_1 1 /* NODE ID, BC, MC, 2-24th bit */
247 #define MODE_2 2 /* NODE ID, BC, MC, Hash Table */
249 /* Configuration Register 0 (DLCR6) */
250 #define CONFIG_REG_0 6
251 #define DLC_EN BIT(7)
252 #define SRAM_CYCLE_TIME_100NS BIT(6)
253 #define SYSTEM_BUS_WIDTH_8 BIT(5) /* 1 = 8bit, 0 = 16bit */
254 #define BUFFER_WIDTH_8 BIT(4) /* 1 = 8bit, 0 = 16bit */
257 #define SRAM_BS1 BIT(1) /* 00=8kb, 01=16kb */
258 #define SRAM_BS0 BIT(0) /* 10=32kb, 11=64kb */
260 #ifndef ETH16I_TX_BUF_SIZE /* 0 = 2kb, 1 = 4kb */
261 #define ETH16I_TX_BUF_SIZE 3 /* 2 = 8kb, 3 = 16kb */
263 #define TX_BUF_1x2048 0
264 #define TX_BUF_2x2048 1
265 #define TX_BUF_2x4098 2
266 #define TX_BUF_2x8192 3
268 /* Configuration Register 1 (DLCR7) */
269 #define CONFIG_REG_1 7
270 #define POWERUP BIT(5)
272 /* Transmit start register */
273 #define TRANSMIT_START_REG 10
274 #define TRANSMIT_START_RB 2
275 #define TX_START BIT(7) /* Rest of register bit indicate*/
276 /* number of packets in tx buffer*/
277 /* Node ID registers (DLCR8-13) */
281 /* Hash Table registers (HT8-15) */
282 #define HASH_TABLE_0 8
283 #define HASH_TABLE_RB 1
285 /* Buffer memory ports */
286 #define BUFFER_MEM_PORT_LB 8
287 #define DATAPORT BUFFER_MEM_PORT_LB
288 #define BUFFER_MEM_PORT_HB 9
290 /* 16 Collision control register (BMPR11) */
291 #define COL_16_REG 11
292 #define HALT_ON_16 0x00
293 #define RETRANS_AND_HALT_ON_16 0x02
295 /* Maximum number of attempts to send after 16 concecutive collisions */
296 #define MAX_COL_16 10
298 /* DMA Burst and Transceiver Mode Register (BMPR13) */
299 #define TRANSCEIVER_MODE_REG 13
300 #define TRANSCEIVER_MODE_RB 2
301 #define IO_BASE_UNLOCK BIT(7)
302 #define LOWER_SQUELCH_TRESH BIT(6)
303 #define LINK_TEST_DISABLE BIT(5)
304 #define AUI_SELECT BIT(4)
305 #define DIS_AUTO_PORT_SEL BIT(3)
307 /* Filter Self Receive Register (BMPR14) */
308 #define FILTER_SELF_RX_REG 14
309 #define SKIP_RX_PACKET BIT(2)
310 #define FILTER_SELF_RECEIVE BIT(0)
312 /* EEPROM Control Register (BMPR 16) */
313 #define EEPROM_CTRL_REG 16
315 /* EEPROM Data Register (BMPR 17) */
316 #define EEPROM_DATA_REG 17
318 /* NMC93CSx6 EEPROM Control Bits */
326 /* NMC93CSx6 EEPROM Instructions */
327 #define EEPROM_READ 0x80
329 /* NMC93CSx6 EEPROM Addresses */
330 #define E_NODEID_0 0x02
331 #define E_NODEID_1 0x03
332 #define E_NODEID_2 0x04
333 #define E_PORT_SELECT 0x14
334 #define E_PORT_BNC 0x00
335 #define E_PORT_DIX 0x01
336 #define E_PORT_TP 0x02
337 #define E_PORT_AUTO 0x03
338 #define E_PORT_FROM_EPROM 0x04
339 #define E_PRODUCT_CFG 0x30
342 /* Macro to slow down io between EEPROM clock transitions */
343 #define eeprom_slow_io() do { int _i = 40; while(--_i > 0) { inb(0x80); }}while(0)
345 /* Jumperless Configuration Register (BMPR19) */
346 #define JUMPERLESS_CONFIG 19
348 /* ID ROM registers, writing to them also resets some parts of chip */
351 #define RESET ID_ROM_0
353 /* This is the I/O address list to be probed when seeking the card */
354 static unsigned int eth16i_portlist[] __initdata = {
355 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
358 static unsigned int eth32i_portlist[] __initdata = {
359 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0x7000, 0x8000,
360 0x9000, 0xA000, 0xB000, 0xC000, 0xD000, 0xE000, 0xF000, 0
363 /* This is the Interrupt lookup table for Eth16i card */
364 static unsigned int eth16i_irqmap[] __initdata = { 9, 10, 5, 15, 0 };
365 #define NUM_OF_ISA_IRQS 4
367 /* This is the Interrupt lookup table for Eth32i card */
368 static unsigned int eth32i_irqmap[] __initdata = { 3, 5, 7, 9, 10, 11, 12, 15, 0 };
369 #define EISA_IRQ_REG 0xc89
370 #define NUM_OF_EISA_IRQS 8
372 static unsigned int eth16i_tx_buf_map[] = { 2048, 2048, 4096, 8192 };
374 /* Use 0 for production, 1 for verification, >2 for debug */
376 #define ETH16I_DEBUG 0
378 static unsigned int eth16i_debug = ETH16I_DEBUG;
380 /* Information for each board */
382 struct eth16i_local {
383 unsigned char tx_started;
384 unsigned char tx_buf_busy;
385 unsigned short tx_queue; /* Number of packets in transmit buffer */
386 unsigned short tx_queue_len;
387 unsigned int tx_buf_size;
388 unsigned long open_time;
389 unsigned long tx_buffered_packets;
390 unsigned long tx_buffered_bytes;
391 unsigned long col_16;
395 /* Function prototypes */
397 static int eth16i_probe1(struct net_device *dev, int ioaddr);
398 static int eth16i_check_signature(int ioaddr);
399 static int eth16i_probe_port(int ioaddr);
400 static void eth16i_set_port(int ioaddr, int porttype);
401 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l);
402 static int eth16i_receive_probe_packet(int ioaddr);
403 static int eth16i_get_irq(int ioaddr);
404 static int eth16i_read_eeprom(int ioaddr, int offset);
405 static int eth16i_read_eeprom_word(int ioaddr);
406 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command);
407 static int eth16i_open(struct net_device *dev);
408 static int eth16i_close(struct net_device *dev);
409 static int eth16i_tx(struct sk_buff *skb, struct net_device *dev);
410 static void eth16i_rx(struct net_device *dev);
411 static void eth16i_timeout(struct net_device *dev);
412 static irqreturn_t eth16i_interrupt(int irq, void *dev_id);
413 static void eth16i_reset(struct net_device *dev);
414 static void eth16i_timeout(struct net_device *dev);
415 static void eth16i_skip_packet(struct net_device *dev);
416 static void eth16i_multicast(struct net_device *dev);
417 static void eth16i_select_regbank(unsigned char regbank, int ioaddr);
418 static void eth16i_initialize(struct net_device *dev, int boot);
421 static int eth16i_set_irq(struct net_device *dev);
425 static ushort eth16i_parse_mediatype(const char* s);
428 static char cardname[] __initdata = "ICL EtherTeam 16i/32";
430 static int __init do_eth16i_probe(struct net_device *dev)
434 int base_addr = dev->base_addr;
437 printk(KERN_DEBUG "Probing started for %s\n", cardname);
439 if(base_addr > 0x1ff) /* Check only single location */
440 return eth16i_probe1(dev, base_addr);
441 else if(base_addr != 0) /* Don't probe at all */
444 /* Seek card from the ISA io address space */
445 for(i = 0; (ioaddr = eth16i_portlist[i]) ; i++)
446 if(eth16i_probe1(dev, ioaddr) == 0)
449 /* Seek card from the EISA io address space */
450 for(i = 0; (ioaddr = eth32i_portlist[i]) ; i++)
451 if(eth16i_probe1(dev, ioaddr) == 0)
458 struct net_device * __init eth16i_probe(int unit)
460 struct net_device *dev = alloc_etherdev(sizeof(struct eth16i_local));
464 return ERR_PTR(-ENOMEM);
466 sprintf(dev->name, "eth%d", unit);
467 netdev_boot_setup_check(dev);
469 err = do_eth16i_probe(dev);
479 static int __init eth16i_probe1(struct net_device *dev, int ioaddr)
481 struct eth16i_local *lp = netdev_priv(dev);
482 static unsigned version_printed;
485 /* Let's grab the region */
486 if (!request_region(ioaddr, ETH16I_IO_EXTENT, cardname))
490 The MB86985 chip has on register which holds information in which
491 io address the chip lies. First read this register and compare
492 it to our current io address and if match then this could
496 if(ioaddr < 0x1000) {
497 if(eth16i_portlist[(inb(ioaddr + JUMPERLESS_CONFIG) & 0x07)]
504 /* Now we will go a bit deeper and try to find the chip's signature */
506 if(eth16i_check_signature(ioaddr) != 0) {
512 Now it seems that we have found a ethernet chip in this particular
513 ioaddr. The MB86985 chip has this feature, that when you read a
514 certain register it will increase it's io base address to next
515 configurable slot. Now when we have found the chip, first thing is
516 to make sure that the chip's ioaddr will hold still here.
519 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
520 outb(0x00, ioaddr + TRANSCEIVER_MODE_REG);
522 outb(0x00, ioaddr + RESET); /* Reset some parts of chip */
523 BITSET(ioaddr + CONFIG_REG_0, BIT(7)); /* Disable the data link */
525 if( (eth16i_debug & version_printed++) == 0)
526 printk(KERN_INFO "%s", version);
528 dev->base_addr = ioaddr;
529 dev->irq = eth16i_get_irq(ioaddr);
531 /* Try to obtain interrupt vector */
533 if ((retval = request_irq(dev->irq, (void *)ð16i_interrupt, 0, cardname, dev))) {
534 printk(KERN_WARNING "%s at %#3x, but is unusable due to conflicting IRQ %d.\n",
535 cardname, ioaddr, dev->irq);
539 printk(KERN_INFO "%s: %s at %#3x, IRQ %d, ",
540 dev->name, cardname, ioaddr, dev->irq);
543 /* Now we will have to lock the chip's io address */
544 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
545 outb(0x38, ioaddr + TRANSCEIVER_MODE_REG);
547 eth16i_initialize(dev, 1); /* Initialize rest of the chip's registers */
549 /* Now let's same some energy by shutting down the chip ;) */
550 BITCLR(ioaddr + CONFIG_REG_1, POWERUP);
552 /* Initialize the device structure */
553 memset(lp, 0, sizeof(struct eth16i_local));
554 dev->open = eth16i_open;
555 dev->stop = eth16i_close;
556 dev->hard_start_xmit = eth16i_tx;
557 dev->set_multicast_list = eth16i_multicast;
558 dev->tx_timeout = eth16i_timeout;
559 dev->watchdog_timeo = TX_TIMEOUT;
560 spin_lock_init(&lp->lock);
562 retval = register_netdev(dev);
567 free_irq(dev->irq, dev);
569 release_region(ioaddr, ETH16I_IO_EXTENT);
574 static void eth16i_initialize(struct net_device *dev, int boot)
576 int ioaddr = dev->base_addr;
578 unsigned char node_byte = 0;
580 /* Setup station address */
581 eth16i_select_regbank(NODE_ID_RB, ioaddr);
582 for(i = 0 ; i < 3 ; i++) {
583 unsigned short node_val = eth16i_read_eeprom(ioaddr, E_NODEID_0 + i);
584 ((unsigned short *)dev->dev_addr)[i] = ntohs(node_val);
587 for(i = 0; i < 6; i++) {
588 outb( ((unsigned char *)dev->dev_addr)[i], ioaddr + NODE_ID_0 + i);
590 printk("%02x", inb(ioaddr + NODE_ID_0 + i));
596 /* Now we will set multicast addresses to accept none */
597 eth16i_select_regbank(HASH_TABLE_RB, ioaddr);
598 for(i = 0; i < 8; i++)
599 outb(0x00, ioaddr + HASH_TABLE_0 + i);
602 Now let's disable the transmitter and receiver, set the buffer ram
603 cycle time, bus width and buffer data path width. Also we shall
604 set transmit buffer size and total buffer size.
607 eth16i_select_regbank(2, ioaddr);
610 node_w = eth16i_read_eeprom(ioaddr, E_PRODUCT_CFG);
612 if( (node_w & 0xFF00) == 0x0800)
613 node_byte |= BUFFER_WIDTH_8;
615 node_byte |= SRAM_BS1;
617 if( (node_w & 0x00FF) == 64)
618 node_byte |= SRAM_BS0;
620 node_byte |= DLC_EN | SRAM_CYCLE_TIME_100NS | (ETH16I_TX_BUF_SIZE << 2);
622 outb(node_byte, ioaddr + CONFIG_REG_0);
624 /* We shall halt the transmitting, if 16 collisions are detected */
625 outb(HALT_ON_16, ioaddr + COL_16_REG);
628 /* if_port already set by init_module() */
630 dev->if_port = (dev->mem_start < E_PORT_FROM_EPROM) ?
631 dev->mem_start : E_PORT_FROM_EPROM;
634 /* Set interface port type */
636 char *porttype[] = {"BNC", "DIX", "TP", "AUTO", "FROM_EPROM" };
641 case E_PORT_FROM_EPROM:
642 dev->if_port = eth16i_read_eeprom(ioaddr, E_PORT_SELECT);
646 dev->if_port = eth16i_probe_port(ioaddr);
655 printk(" %s interface.\n", porttype[dev->if_port]);
657 eth16i_set_port(ioaddr, dev->if_port);
660 /* Set Receive Mode to normal operation */
661 outb(MODE_2, ioaddr + RECEIVE_MODE_REG);
664 static int eth16i_probe_port(int ioaddr)
668 unsigned char dummy_packet[64];
670 /* Powerup the chip */
671 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
673 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
675 eth16i_select_regbank(NODE_ID_RB, ioaddr);
677 for(i = 0; i < 6; i++) {
678 dummy_packet[i] = inb(ioaddr + NODE_ID_0 + i);
679 dummy_packet[i+6] = inb(ioaddr + NODE_ID_0 + i);
682 dummy_packet[12] = 0x00;
683 dummy_packet[13] = 0x04;
684 memset(dummy_packet + 14, 0, sizeof(dummy_packet) - 14);
686 eth16i_select_regbank(2, ioaddr);
688 for(i = 0; i < 3; i++) {
689 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
690 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
691 eth16i_set_port(ioaddr, i);
694 printk(KERN_DEBUG "Set port number %d\n", i);
696 retcode = eth16i_send_probe_packet(ioaddr, dummy_packet, 64);
698 retcode = eth16i_receive_probe_packet(ioaddr);
701 printk(KERN_DEBUG "Eth16i interface port found at %d\n", i);
707 printk(KERN_DEBUG "TRANSMIT_DONE timeout when probing interface port\n");
711 if( eth16i_debug > 1)
712 printk(KERN_DEBUG "Using default port\n");
717 static void eth16i_set_port(int ioaddr, int porttype)
719 unsigned short temp = 0;
721 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
722 outb(LOOPBACK_CONTROL, ioaddr + TRANSMIT_MODE_REG);
724 temp |= DIS_AUTO_PORT_SEL;
737 BITSET(ioaddr + TRANSMIT_MODE_REG, CONTROL_OUTPUT);
741 outb(temp, ioaddr + TRANSCEIVER_MODE_REG);
743 if(eth16i_debug > 1) {
744 printk(KERN_DEBUG "TRANSMIT_MODE_REG = %x\n", inb(ioaddr + TRANSMIT_MODE_REG));
745 printk(KERN_DEBUG "TRANSCEIVER_MODE_REG = %x\n",
746 inb(ioaddr+TRANSCEIVER_MODE_REG));
750 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l)
752 unsigned long starttime;
754 outb(0xff, ioaddr + TX_STATUS_REG);
756 outw(l, ioaddr + DATAPORT);
757 outsw(ioaddr + DATAPORT, (unsigned short *)b, (l + 1) >> 1);
760 outb(TX_START | 1, ioaddr + TRANSMIT_START_REG);
762 while( (inb(ioaddr + TX_STATUS_REG) & 0x80) == 0) {
763 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
771 static int eth16i_receive_probe_packet(int ioaddr)
773 unsigned long starttime;
777 while((inb(ioaddr + TX_STATUS_REG) & 0x20) == 0) {
778 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
781 printk(KERN_DEBUG "Timeout occurred waiting transmit packet received\n");
783 while((inb(ioaddr + RX_STATUS_REG) & 0x80) == 0) {
784 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
786 printk(KERN_DEBUG "Timeout occurred waiting receive packet\n");
792 printk(KERN_DEBUG "RECEIVE_PACKET\n");
793 return(0); /* Found receive packet */
797 if(eth16i_debug > 1) {
798 printk(KERN_DEBUG "TRANSMIT_PACKET_RECEIVED %x\n", inb(ioaddr + TX_STATUS_REG));
799 printk(KERN_DEBUG "RX_STATUS_REG = %x\n", inb(ioaddr + RX_STATUS_REG));
802 return(0); /* Return success */
806 static int eth16i_set_irq(struct net_device* dev)
808 const int ioaddr = dev->base_addr;
809 const int irq = dev->irq;
812 if(ioaddr < 0x1000) {
813 while(eth16i_irqmap[i] && eth16i_irqmap[i] != irq)
816 if(i < NUM_OF_ISA_IRQS) {
817 u8 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
818 cbyte = (cbyte & 0x3F) | (i << 6);
819 outb(cbyte, ioaddr + JUMPERLESS_CONFIG);
824 printk(KERN_NOTICE "%s: EISA Interrupt cannot be set. Use EISA Configuration utility.\n", dev->name);
832 static int __init eth16i_get_irq(int ioaddr)
836 if( ioaddr < 0x1000) {
837 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
838 return( eth16i_irqmap[ ((cbyte & 0xC0) >> 6) ] );
839 } else { /* Oh..the card is EISA so method getting IRQ different */
840 unsigned short index = 0;
841 cbyte = inb(ioaddr + EISA_IRQ_REG);
842 while( (cbyte & 0x01) == 0) {
846 return( eth32i_irqmap[ index ] );
850 static int __init eth16i_check_signature(int ioaddr)
853 unsigned char creg[4] = { 0 };
855 for(i = 0; i < 4 ; i++) {
857 creg[i] = inb(ioaddr + TRANSMIT_MODE_REG + i);
860 printk("eth16i: read signature byte %x at %x\n",
862 ioaddr + TRANSMIT_MODE_REG + i);
865 creg[0] &= 0x0F; /* Mask collision cnr */
866 creg[2] &= 0x7F; /* Mask DCLEN bit */
870 This was removed because the card was sometimes left to state
871 from which it couldn't be find anymore. If there is need
872 to more strict check still this have to be fixed.
874 if( ! ((creg[0] == 0x06) && (creg[1] == 0x41)) ) {
880 if( !((creg[2] == 0x36) && (creg[3] == 0xE0)) ) {
884 if( !((creg[2] == 0x40) && (creg[3] == 0x00)) )
888 if(eth16i_read_eeprom(ioaddr, E_NODEID_0) != 0)
891 if((eth16i_read_eeprom(ioaddr, E_NODEID_1) & 0xFF00) != 0x4B00)
897 static int eth16i_read_eeprom(int ioaddr, int offset)
901 eth16i_eeprom_cmd(ioaddr, EEPROM_READ | offset);
902 outb(CS_1, ioaddr + EEPROM_CTRL_REG);
903 data = eth16i_read_eeprom_word(ioaddr);
904 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
909 static int eth16i_read_eeprom_word(int ioaddr)
914 for(i = 16; i > 0; i--) {
915 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
917 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
920 ((inb(ioaddr + EEPROM_DATA_REG) & DI_1) ? 1 : 0);
928 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command)
932 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
933 outb(DI_0, ioaddr + EEPROM_DATA_REG);
934 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
935 outb(DI_1, ioaddr + EEPROM_DATA_REG);
936 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
938 for(i = 7; i >= 0; i--) {
939 short cmd = ( (command & (1 << i)) ? DI_1 : DI_0 );
940 outb(cmd, ioaddr + EEPROM_DATA_REG);
941 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
943 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
948 static int eth16i_open(struct net_device *dev)
950 struct eth16i_local *lp = netdev_priv(dev);
951 int ioaddr = dev->base_addr;
953 /* Powerup the chip */
954 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
956 /* Initialize the chip */
957 eth16i_initialize(dev, 0);
959 /* Set the transmit buffer size */
960 lp->tx_buf_size = eth16i_tx_buf_map[ETH16I_TX_BUF_SIZE & 0x03];
963 printk(KERN_DEBUG "%s: transmit buffer size %d\n",
964 dev->name, lp->tx_buf_size);
966 /* Now enable Transmitter and Receiver sections */
967 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
969 /* Now switch to register bank 2, for run time operation */
970 eth16i_select_regbank(2, ioaddr);
972 lp->open_time = jiffies;
975 lp->tx_queue_len = 0;
977 /* Turn on interrupts*/
978 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
980 netif_start_queue(dev);
984 static int eth16i_close(struct net_device *dev)
986 struct eth16i_local *lp = netdev_priv(dev);
987 int ioaddr = dev->base_addr;
991 /* Turn off interrupts*/
992 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
994 netif_stop_queue(dev);
998 /* Disable transmit and receive */
999 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1001 /* Reset the chip */
1002 /* outb(0xff, ioaddr + RESET); */
1003 /* outw(0xffff, ioaddr + TX_STATUS_REG); */
1005 outb(0x00, ioaddr + CONFIG_REG_1);
1010 static void eth16i_timeout(struct net_device *dev)
1012 struct eth16i_local *lp = netdev_priv(dev);
1013 int ioaddr = dev->base_addr;
1015 If we get here, some higher level has decided that
1016 we are broken. There should really be a "kick me"
1017 function call instead.
1020 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1021 printk(KERN_WARNING "%s: transmit timed out with status %04x, %s ?\n",
1023 inw(ioaddr + TX_STATUS_REG), (inb(ioaddr + TX_STATUS_REG) & TX_DONE) ?
1024 "IRQ conflict" : "network cable problem");
1026 dev->trans_start = jiffies;
1028 /* Let's dump all registers */
1029 if(eth16i_debug > 0) {
1030 printk(KERN_DEBUG "%s: timeout: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
1031 dev->name, inb(ioaddr + 0),
1032 inb(ioaddr + 1), inb(ioaddr + 2),
1033 inb(ioaddr + 3), inb(ioaddr + 4),
1035 inb(ioaddr + 6), inb(ioaddr + 7));
1037 printk(KERN_DEBUG "%s: transmit start reg: %02x. collision reg %02x\n",
1038 dev->name, inb(ioaddr + TRANSMIT_START_REG),
1039 inb(ioaddr + COL_16_REG));
1040 printk(KERN_DEBUG "lp->tx_queue = %d\n", lp->tx_queue);
1041 printk(KERN_DEBUG "lp->tx_queue_len = %d\n", lp->tx_queue_len);
1042 printk(KERN_DEBUG "lp->tx_started = %d\n", lp->tx_started);
1044 dev->stats.tx_errors++;
1046 dev->trans_start = jiffies;
1047 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1048 netif_wake_queue(dev);
1051 static int eth16i_tx(struct sk_buff *skb, struct net_device *dev)
1053 struct eth16i_local *lp = netdev_priv(dev);
1054 int ioaddr = dev->base_addr;
1056 ushort length = skb->len;
1058 unsigned long flags;
1060 if (length < ETH_ZLEN) {
1061 if (skb_padto(skb, ETH_ZLEN))
1067 netif_stop_queue(dev);
1069 /* Turn off TX interrupts */
1070 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1072 /* We would be better doing the disable_irq tricks the 3c509 does,
1073 that would make this suck a lot less */
1075 spin_lock_irqsave(&lp->lock, flags);
1077 if( (length + 2) > (lp->tx_buf_size - lp->tx_queue_len)) {
1078 if(eth16i_debug > 0)
1079 printk(KERN_WARNING "%s: Transmit buffer full.\n", dev->name);
1082 outw(length, ioaddr + DATAPORT);
1084 if( ioaddr < 0x1000 )
1085 outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
1087 unsigned char frag = length % 4;
1088 outsl(ioaddr + DATAPORT, buf, length >> 2);
1090 outsw(ioaddr + DATAPORT, (buf + (length & 0xFFFC)), 1);
1092 outsw(ioaddr + DATAPORT,
1093 (buf + (length & 0xFFFC) + 2), 1);
1096 lp->tx_buffered_packets++;
1097 lp->tx_buffered_bytes = length;
1099 lp->tx_queue_len += length + 2;
1101 lp->tx_buf_busy = 0;
1103 if(lp->tx_started == 0) {
1104 /* If the transmitter is idle..always trigger a transmit */
1105 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1107 lp->tx_queue_len = 0;
1108 dev->trans_start = jiffies;
1110 netif_wake_queue(dev);
1112 else if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1113 /* There is still more room for one more packet in tx buffer */
1114 netif_wake_queue(dev);
1117 spin_unlock_irqrestore(&lp->lock, flags);
1119 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1120 /* Turn TX interrupts back on */
1121 /* outb(TX_INTR_DONE | TX_INTR_16_COL, ioaddr + TX_INTR_REG); */
1127 static void eth16i_rx(struct net_device *dev)
1129 int ioaddr = dev->base_addr;
1130 int boguscount = MAX_RX_LOOP;
1132 /* Loop until all packets have been read */
1133 while( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) {
1135 /* Read status byte from receive buffer */
1136 ushort status = inw(ioaddr + DATAPORT);
1138 /* Get the size of the packet from receive buffer */
1139 ushort pkt_len = inw(ioaddr + DATAPORT);
1141 if(eth16i_debug > 4)
1142 printk(KERN_DEBUG "%s: Receiving packet mode %02x status %04x.\n",
1144 inb(ioaddr + RECEIVE_MODE_REG), status);
1146 if( !(status & PKT_GOOD) ) {
1147 dev->stats.rx_errors++;
1149 if( (pkt_len < ETH_ZLEN) || (pkt_len > ETH_FRAME_LEN) ) {
1150 dev->stats.rx_length_errors++;
1155 eth16i_skip_packet(dev);
1156 dev->stats.rx_dropped++;
1159 else { /* Ok so now we should have a good packet */
1160 struct sk_buff *skb;
1162 skb = dev_alloc_skb(pkt_len + 3);
1164 printk(KERN_WARNING "%s: Could'n allocate memory for packet (len %d)\n",
1165 dev->name, pkt_len);
1166 eth16i_skip_packet(dev);
1167 dev->stats.rx_dropped++;
1174 Now let's get the packet out of buffer.
1175 size is (pkt_len + 1) >> 1, cause we are now reading words
1176 and it have to be even aligned.
1180 insw(ioaddr + DATAPORT, skb_put(skb, pkt_len),
1181 (pkt_len + 1) >> 1);
1183 unsigned char *buf = skb_put(skb, pkt_len);
1184 unsigned char frag = pkt_len % 4;
1186 insl(ioaddr + DATAPORT, buf, pkt_len >> 2);
1189 unsigned short rest[2];
1190 rest[0] = inw( ioaddr + DATAPORT );
1192 rest[1] = inw( ioaddr + DATAPORT );
1194 memcpy(buf + (pkt_len & 0xfffc), (char *)rest, frag);
1198 skb->protocol=eth_type_trans(skb, dev);
1200 if( eth16i_debug > 5 ) {
1202 printk(KERN_DEBUG "%s: Received packet of length %d.\n",
1203 dev->name, pkt_len);
1204 for(i = 0; i < 14; i++)
1205 printk(KERN_DEBUG " %02x", skb->data[i]);
1206 printk(KERN_DEBUG ".\n");
1209 dev->last_rx = jiffies;
1210 dev->stats.rx_packets++;
1211 dev->stats.rx_bytes += pkt_len;
1215 if(--boguscount <= 0)
1221 static irqreturn_t eth16i_interrupt(int irq, void *dev_id)
1223 struct net_device *dev = dev_id;
1224 struct eth16i_local *lp;
1225 int ioaddr = 0, status;
1228 ioaddr = dev->base_addr;
1229 lp = netdev_priv(dev);
1231 /* Turn off all interrupts from adapter */
1232 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1234 /* eth16i_tx won't be called */
1235 spin_lock(&lp->lock);
1237 status = inw(ioaddr + TX_STATUS_REG); /* Get the status */
1238 outw(status, ioaddr + TX_STATUS_REG); /* Clear status bits */
1243 if(eth16i_debug > 3)
1244 printk(KERN_DEBUG "%s: Interrupt with status %04x.\n", dev->name, status);
1246 if( status & 0x7f00 ) {
1248 dev->stats.rx_errors++;
1250 if(status & (BUS_RD_ERR << 8) )
1251 printk(KERN_WARNING "%s: Bus read error.\n",dev->name);
1252 if(status & (SHORT_PKT_ERR << 8) ) dev->stats.rx_length_errors++;
1253 if(status & (ALIGN_ERR << 8) ) dev->stats.rx_frame_errors++;
1254 if(status & (CRC_ERR << 8) ) dev->stats.rx_crc_errors++;
1255 if(status & (RX_BUF_OVERFLOW << 8) ) dev->stats.rx_over_errors++;
1257 if( status & 0x001a) {
1259 dev->stats.tx_errors++;
1261 if(status & CR_LOST) dev->stats.tx_carrier_errors++;
1262 if(status & TX_JABBER_ERR) dev->stats.tx_window_errors++;
1265 if(status & COLLISION) {
1266 dev->stats.collisions +=
1267 ((inb(ioaddr+TRANSMIT_MODE_REG) & 0xF0) >> 4);
1270 if(status & COLLISIONS_16) {
1271 if(lp->col_16 < MAX_COL_16) {
1273 dev->stats.collisions++;
1274 /* Resume transmitting, skip failed packet */
1275 outb(0x02, ioaddr + COL_16_REG);
1278 printk(KERN_WARNING "%s: bailing out due to many consecutive 16-in-a-row collisions. Network cable problem?\n", dev->name);
1283 if( status & 0x00ff ) { /* Let's check the transmit status reg */
1285 if(status & TX_DONE) { /* The transmit has been done */
1286 dev->stats.tx_packets = lp->tx_buffered_packets;
1287 dev->stats.tx_bytes += lp->tx_buffered_bytes;
1290 if(lp->tx_queue) { /* Is there still packets ? */
1291 /* There was packet(s) so start transmitting and write also
1292 how many packets there is to be sended */
1293 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1295 lp->tx_queue_len = 0;
1301 netif_wake_queue(dev);
1305 if( ( status & 0x8000 ) ||
1306 ( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) ) {
1307 eth16i_rx(dev); /* We have packet in receive buffer */
1310 /* Turn interrupts back on */
1311 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1313 if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1314 /* There is still more room for one more packet in tx buffer */
1315 netif_wake_queue(dev);
1318 spin_unlock(&lp->lock);
1320 return IRQ_RETVAL(handled);
1323 static void eth16i_skip_packet(struct net_device *dev)
1325 int ioaddr = dev->base_addr;
1327 inw(ioaddr + DATAPORT);
1328 inw(ioaddr + DATAPORT);
1329 inw(ioaddr + DATAPORT);
1331 outb(SKIP_RX_PACKET, ioaddr + FILTER_SELF_RX_REG);
1332 while( inb( ioaddr + FILTER_SELF_RX_REG ) != 0);
1335 static void eth16i_reset(struct net_device *dev)
1337 struct eth16i_local *lp = netdev_priv(dev);
1338 int ioaddr = dev->base_addr;
1340 if(eth16i_debug > 1)
1341 printk(KERN_DEBUG "%s: Resetting device.\n", dev->name);
1343 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1344 outw(0xffff, ioaddr + TX_STATUS_REG);
1345 eth16i_select_regbank(2, ioaddr);
1348 lp->tx_buf_busy = 0;
1350 lp->tx_queue_len = 0;
1351 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
1354 static void eth16i_multicast(struct net_device *dev)
1356 int ioaddr = dev->base_addr;
1358 if(dev->mc_count || dev->flags&(IFF_ALLMULTI|IFF_PROMISC))
1360 dev->flags|=IFF_PROMISC; /* Must do this */
1361 outb(3, ioaddr + RECEIVE_MODE_REG);
1363 outb(2, ioaddr + RECEIVE_MODE_REG);
1367 static void eth16i_select_regbank(unsigned char banknbr, int ioaddr)
1371 data = inb(ioaddr + CONFIG_REG_1);
1372 outb( ((data & 0xF3) | ( (banknbr & 0x03) << 2)), ioaddr + CONFIG_REG_1);
1377 static ushort eth16i_parse_mediatype(const char* s)
1380 return E_PORT_FROM_EPROM;
1382 if (!strncmp(s, "bnc", 3))
1384 else if (!strncmp(s, "tp", 2))
1386 else if (!strncmp(s, "dix", 3))
1388 else if (!strncmp(s, "auto", 4))
1391 return E_PORT_FROM_EPROM;
1394 #define MAX_ETH16I_CARDS 4 /* Max number of Eth16i cards per module */
1396 static struct net_device *dev_eth16i[MAX_ETH16I_CARDS];
1397 static int io[MAX_ETH16I_CARDS];
1399 static int irq[MAX_ETH16I_CARDS];
1401 static char* mediatype[MAX_ETH16I_CARDS];
1402 static int debug = -1;
1404 MODULE_AUTHOR("Mika Kuoppala <miku@iki.fi>");
1405 MODULE_DESCRIPTION("ICL EtherTeam 16i/32 driver");
1406 MODULE_LICENSE("GPL");
1409 module_param_array(io, int, NULL, 0);
1410 MODULE_PARM_DESC(io, "eth16i I/O base address(es)");
1413 module_param_array(irq, int, NULL, 0);
1414 MODULE_PARM_DESC(irq, "eth16i interrupt request number");
1417 module_param_array(mediatype, charp, NULL, 0);
1418 MODULE_PARM_DESC(mediatype, "eth16i media type of interface(s) (bnc,tp,dix,auto,eprom)");
1420 module_param(debug, int, 0);
1421 MODULE_PARM_DESC(debug, "eth16i debug level (0-6)");
1423 int __init init_module(void)
1425 int this_dev, found = 0;
1426 struct net_device *dev;
1428 for (this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1429 dev = alloc_etherdev(sizeof(struct eth16i_local));
1433 dev->base_addr = io[this_dev];
1436 eth16i_debug = debug;
1438 if(eth16i_debug > 1)
1439 printk(KERN_NOTICE "eth16i(%d): interface type %s\n", this_dev, mediatype[this_dev] ? mediatype[this_dev] : "none" );
1441 dev->if_port = eth16i_parse_mediatype(mediatype[this_dev]);
1443 if(io[this_dev] == 0) {
1444 if(this_dev != 0) /* Only autoprobe 1st one */
1447 printk(KERN_NOTICE "eth16i.c: Presently autoprobing (not recommended) for a single card.\n");
1450 if (do_eth16i_probe(dev) == 0) {
1451 dev_eth16i[found++] = dev;
1454 printk(KERN_WARNING "eth16i.c No Eth16i card found (i/o = 0x%x).\n",
1464 void __exit cleanup_module(void)
1468 for(this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1469 struct net_device *dev = dev_eth16i[this_dev];
1472 unregister_netdev(dev);
1473 free_irq(dev->irq, dev);
1474 release_region(dev->base_addr, ETH16I_IO_EXTENT);
1483 * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c eth16i.c"
1484 * alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict -prototypes -O6 -c eth16i.c"
1491 /* End of file eth16i.c */