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>
164 #include <asm/system.h>
165 #include <asm/bitops.h>
172 #define BIT(a) ( (1 << (a)) )
173 #define BITSET(ioaddr, bnum) ((outb(((inb(ioaddr)) | (bnum)), ioaddr)))
174 #define BITCLR(ioaddr, bnum) ((outb(((inb(ioaddr)) & (~(bnum))), ioaddr)))
176 /* This is the I/O address space for Etherteam 16i adapter. */
177 #define ETH16I_IO_EXTENT 32
179 /* Ticks before deciding that transmit has timed out */
180 #define TX_TIMEOUT (400*HZ/1000)
182 /* Maximum loop count when receiving packets */
183 #define MAX_RX_LOOP 20
185 /* Some interrupt masks */
186 #define ETH16I_INTR_ON 0xef8a /* Higher is receive mask */
187 #define ETH16I_INTR_OFF 0x0000
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)
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)
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)
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)
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)
229 /* Transmit Mode Register (DLCR4) */
230 #define TRANSMIT_MODE_REG 4
231 #define LOOPBACK_CONTROL BIT(1)
232 #define CONTROL_OUTPUT BIT(2)
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)
242 #define ADDRESS_FILTER_MODE BIT(1) | BIT(0)
245 #define MODE_1 1 /* NODE ID, BC, MC, 2-24th bit */
246 #define MODE_2 2 /* NODE ID, BC, MC, Hash Table */
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 */
256 #define SRAM_BS1 BIT(1) /* 00=8kb, 01=16kb */
257 #define SRAM_BS0 BIT(0) /* 10=32kb, 11=64kb */
259 #ifndef ETH16I_TX_BUF_SIZE /* 0 = 2kb, 1 = 4kb */
260 #define ETH16I_TX_BUF_SIZE 3 /* 2 = 8kb, 3 = 16kb */
262 #define TX_BUF_1x2048 0
263 #define TX_BUF_2x2048 1
264 #define TX_BUF_2x4098 2
265 #define TX_BUF_2x8192 3
267 /* Configuration Register 1 (DLCR7) */
268 #define CONFIG_REG_1 7
269 #define POWERUP BIT(5)
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) */
280 /* Hash Table registers (HT8-15) */
281 #define HASH_TABLE_0 8
282 #define HASH_TABLE_RB 1
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
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
294 /* Maximum number of attempts to send after 16 concecutive collisions */
295 #define MAX_COL_16 10
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)
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)
311 /* EEPROM Control Register (BMPR 16) */
312 #define EEPROM_CTRL_REG 16
314 /* EEPROM Data Register (BMPR 17) */
315 #define EEPROM_DATA_REG 17
317 /* NMC93CSx6 EEPROM Control Bits */
325 /* NMC93CSx6 EEPROM Instructions */
326 #define EEPROM_READ 0x80
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
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)
344 /* Jumperless Configuration Register (BMPR19) */
345 #define JUMPERLESS_CONFIG 19
347 /* ID ROM registers, writing to them also resets some parts of chip */
350 #define RESET ID_ROM_0
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
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
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
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
371 static unsigned int eth16i_tx_buf_map[] = { 2048, 2048, 4096, 8192 };
373 /* Use 0 for production, 1 for verification, >2 for debug */
375 #define ETH16I_DEBUG 0
377 static unsigned int eth16i_debug = ETH16I_DEBUG;
379 /* Information for each board */
381 struct eth16i_local {
382 struct net_device_stats stats;
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, struct pt_regs *regs);
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 struct net_device_stats *eth16i_get_stats(struct net_device *dev);
430 static char cardname[] __initdata = "ICL EtherTeam 16i/32";
432 static int __init do_eth16i_probe(struct net_device *dev)
436 int base_addr = dev->base_addr;
438 SET_MODULE_OWNER(dev);
441 printk(KERN_DEBUG "Probing started for %s\n", cardname);
443 if(base_addr > 0x1ff) /* Check only single location */
444 return eth16i_probe1(dev, base_addr);
445 else if(base_addr != 0) /* Don't probe at all */
448 /* Seek card from the ISA io address space */
449 for(i = 0; (ioaddr = eth16i_portlist[i]) ; i++)
450 if(eth16i_probe1(dev, ioaddr) == 0)
453 /* Seek card from the EISA io address space */
454 for(i = 0; (ioaddr = eth32i_portlist[i]) ; i++)
455 if(eth16i_probe1(dev, ioaddr) == 0)
461 struct net_device * __init eth16i_probe(int unit)
463 struct net_device *dev = alloc_etherdev(sizeof(struct eth16i_local));
467 return ERR_PTR(-ENOMEM);
469 sprintf(dev->name, "eth%d", unit);
470 netdev_boot_setup_check(dev);
472 err = do_eth16i_probe(dev);
475 err = register_netdev(dev);
480 free_irq(dev->irq, dev);
481 release_region(dev->base_addr, ETH16I_IO_EXTENT);
487 static int __init eth16i_probe1(struct net_device *dev, int ioaddr)
489 struct eth16i_local *lp = netdev_priv(dev);
490 static unsigned version_printed;
493 /* Let's grab the region */
494 if (!request_region(ioaddr, ETH16I_IO_EXTENT, dev->name))
498 The MB86985 chip has on register which holds information in which
499 io address the chip lies. First read this register and compare
500 it to our current io address and if match then this could
504 if(ioaddr < 0x1000) {
505 if(eth16i_portlist[(inb(ioaddr + JUMPERLESS_CONFIG) & 0x07)]
512 /* Now we will go a bit deeper and try to find the chip's signature */
514 if(eth16i_check_signature(ioaddr) != 0) {
520 Now it seems that we have found a ethernet chip in this particular
521 ioaddr. The MB86985 chip has this feature, that when you read a
522 certain register it will increase it's io base address to next
523 configurable slot. Now when we have found the chip, first thing is
524 to make sure that the chip's ioaddr will hold still here.
527 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
528 outb(0x00, ioaddr + TRANSCEIVER_MODE_REG);
530 outb(0x00, ioaddr + RESET); /* Reset some parts of chip */
531 BITSET(ioaddr + CONFIG_REG_0, BIT(7)); /* Disable the data link */
533 if( (eth16i_debug & version_printed++) == 0)
534 printk(KERN_INFO "%s", version);
536 dev->base_addr = ioaddr;
537 dev->irq = eth16i_get_irq(ioaddr);
539 /* Try to obtain interrupt vector */
541 if ((retval = request_irq(dev->irq, (void *)ð16i_interrupt, 0, dev->name, dev))) {
542 printk(KERN_WARNING "%s: %s at %#3x, but is unusable due conflicting IRQ %d.\n",
543 dev->name, cardname, ioaddr, dev->irq);
547 printk(KERN_INFO "%s: %s at %#3x, IRQ %d, ",
548 dev->name, cardname, ioaddr, dev->irq);
551 /* Now we will have to lock the chip's io address */
552 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
553 outb(0x38, ioaddr + TRANSCEIVER_MODE_REG);
555 eth16i_initialize(dev, 1); /* Initialize rest of the chip's registers */
557 /* Now let's same some energy by shutting down the chip ;) */
558 BITCLR(ioaddr + CONFIG_REG_1, POWERUP);
560 /* Initialize the device structure */
561 memset(lp, 0, sizeof(struct eth16i_local));
562 dev->open = eth16i_open;
563 dev->stop = eth16i_close;
564 dev->hard_start_xmit = eth16i_tx;
565 dev->get_stats = eth16i_get_stats;
566 dev->set_multicast_list = eth16i_multicast;
567 dev->tx_timeout = eth16i_timeout;
568 dev->watchdog_timeo = TX_TIMEOUT;
569 spin_lock_init(&lp->lock);
572 release_region(ioaddr, ETH16I_IO_EXTENT);
577 static void eth16i_initialize(struct net_device *dev, int boot)
579 int ioaddr = dev->base_addr;
581 unsigned char node_byte = 0;
583 /* Setup station address */
584 eth16i_select_regbank(NODE_ID_RB, ioaddr);
585 for(i = 0 ; i < 3 ; i++) {
586 unsigned short node_val = eth16i_read_eeprom(ioaddr, E_NODEID_0 + i);
587 ((unsigned short *)dev->dev_addr)[i] = ntohs(node_val);
590 for(i = 0; i < 6; i++) {
591 outb( ((unsigned char *)dev->dev_addr)[i], ioaddr + NODE_ID_0 + i);
593 printk("%02x", inb(ioaddr + NODE_ID_0 + i));
599 /* Now we will set multicast addresses to accept none */
600 eth16i_select_regbank(HASH_TABLE_RB, ioaddr);
601 for(i = 0; i < 8; i++)
602 outb(0x00, ioaddr + HASH_TABLE_0 + i);
605 Now let's disable the transmitter and receiver, set the buffer ram
606 cycle time, bus width and buffer data path width. Also we shall
607 set transmit buffer size and total buffer size.
610 eth16i_select_regbank(2, ioaddr);
613 node_w = eth16i_read_eeprom(ioaddr, E_PRODUCT_CFG);
615 if( (node_w & 0xFF00) == 0x0800)
616 node_byte |= BUFFER_WIDTH_8;
618 node_byte |= SRAM_BS1;
620 if( (node_w & 0x00FF) == 64)
621 node_byte |= SRAM_BS0;
623 node_byte |= DLC_EN | SRAM_CYCLE_TIME_100NS | (ETH16I_TX_BUF_SIZE << 2);
625 outb(node_byte, ioaddr + CONFIG_REG_0);
627 /* We shall halt the transmitting, if 16 collisions are detected */
628 outb(HALT_ON_16, ioaddr + COL_16_REG);
631 /* if_port already set by init_module() */
633 dev->if_port = (dev->mem_start < E_PORT_FROM_EPROM) ?
634 dev->mem_start : E_PORT_FROM_EPROM;
637 /* Set interface port type */
639 char *porttype[] = {"BNC", "DIX", "TP", "AUTO", "FROM_EPROM" };
644 case E_PORT_FROM_EPROM:
645 dev->if_port = eth16i_read_eeprom(ioaddr, E_PORT_SELECT);
649 dev->if_port = eth16i_probe_port(ioaddr);
658 printk(" %s interface.\n", porttype[dev->if_port]);
660 eth16i_set_port(ioaddr, dev->if_port);
663 /* Set Receive Mode to normal operation */
664 outb(MODE_2, ioaddr + RECEIVE_MODE_REG);
667 static int eth16i_probe_port(int ioaddr)
671 unsigned char dummy_packet[64];
673 /* Powerup the chip */
674 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
676 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
678 eth16i_select_regbank(NODE_ID_RB, ioaddr);
680 for(i = 0; i < 6; i++) {
681 dummy_packet[i] = inb(ioaddr + NODE_ID_0 + i);
682 dummy_packet[i+6] = inb(ioaddr + NODE_ID_0 + i);
685 dummy_packet[12] = 0x00;
686 dummy_packet[13] = 0x04;
687 memset(dummy_packet + 14, 0, sizeof(dummy_packet) - 14);
689 eth16i_select_regbank(2, ioaddr);
691 for(i = 0; i < 3; i++) {
692 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
693 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
694 eth16i_set_port(ioaddr, i);
697 printk(KERN_DEBUG "Set port number %d\n", i);
699 retcode = eth16i_send_probe_packet(ioaddr, dummy_packet, 64);
701 retcode = eth16i_receive_probe_packet(ioaddr);
704 printk(KERN_DEBUG "Eth16i interface port found at %d\n", i);
710 printk(KERN_DEBUG "TRANSMIT_DONE timeout when probing interface port\n");
714 if( eth16i_debug > 1)
715 printk(KERN_DEBUG "Using default port\n");
720 static void eth16i_set_port(int ioaddr, int porttype)
722 unsigned short temp = 0;
724 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
725 outb(LOOPBACK_CONTROL, ioaddr + TRANSMIT_MODE_REG);
727 temp |= DIS_AUTO_PORT_SEL;
740 BITSET(ioaddr + TRANSMIT_MODE_REG, CONTROL_OUTPUT);
744 outb(temp, ioaddr + TRANSCEIVER_MODE_REG);
746 if(eth16i_debug > 1) {
747 printk(KERN_DEBUG "TRANSMIT_MODE_REG = %x\n", inb(ioaddr + TRANSMIT_MODE_REG));
748 printk(KERN_DEBUG "TRANSCEIVER_MODE_REG = %x\n",
749 inb(ioaddr+TRANSCEIVER_MODE_REG));
753 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l)
757 outb(0xff, ioaddr + TX_STATUS_REG);
759 outw(l, ioaddr + DATAPORT);
760 outsw(ioaddr + DATAPORT, (unsigned short *)b, (l + 1) >> 1);
763 outb(TX_START | 1, ioaddr + TRANSMIT_START_REG);
765 while( (inb(ioaddr + TX_STATUS_REG) & 0x80) == 0) {
766 if( (jiffies - starttime) > TX_TIMEOUT) {
774 static int eth16i_receive_probe_packet(int ioaddr)
780 while((inb(ioaddr + TX_STATUS_REG) & 0x20) == 0) {
781 if( (jiffies - starttime) > TX_TIMEOUT) {
784 printk(KERN_DEBUG "Timeout occurred waiting transmit packet received\n");
786 while((inb(ioaddr + RX_STATUS_REG) & 0x80) == 0) {
787 if( (jiffies - starttime) > TX_TIMEOUT) {
789 printk(KERN_DEBUG "Timeout occurred waiting receive packet\n");
795 printk(KERN_DEBUG "RECEIVE_PACKET\n");
796 return(0); /* Found receive packet */
800 if(eth16i_debug > 1) {
801 printk(KERN_DEBUG "TRANSMIT_PACKET_RECEIVED %x\n", inb(ioaddr + TX_STATUS_REG));
802 printk(KERN_DEBUG "RX_STATUS_REG = %x\n", inb(ioaddr + RX_STATUS_REG));
805 return(0); /* Return success */
809 static int eth16i_set_irq(struct net_device* dev)
811 const int ioaddr = dev->base_addr;
812 const int irq = dev->irq;
815 if(ioaddr < 0x1000) {
816 while(eth16i_irqmap[i] && eth16i_irqmap[i] != irq)
819 if(i < NUM_OF_ISA_IRQS) {
820 u8 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
821 cbyte = (cbyte & 0x3F) | (i << 6);
822 outb(cbyte, ioaddr + JUMPERLESS_CONFIG);
827 printk(KERN_NOTICE "%s: EISA Interrupt cannot be set. Use EISA Configuration utility.\n", dev->name);
835 static int __init eth16i_get_irq(int ioaddr)
839 if( ioaddr < 0x1000) {
840 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
841 return( eth16i_irqmap[ ((cbyte & 0xC0) >> 6) ] );
842 } else { /* Oh..the card is EISA so method getting IRQ different */
843 unsigned short index = 0;
844 cbyte = inb(ioaddr + EISA_IRQ_REG);
845 while( (cbyte & 0x01) == 0) {
849 return( eth32i_irqmap[ index ] );
853 static int __init eth16i_check_signature(int ioaddr)
856 unsigned char creg[4] = { 0 };
858 for(i = 0; i < 4 ; i++) {
860 creg[i] = inb(ioaddr + TRANSMIT_MODE_REG + i);
863 printk("eth16i: read signature byte %x at %x\n",
865 ioaddr + TRANSMIT_MODE_REG + i);
868 creg[0] &= 0x0F; /* Mask collision cnr */
869 creg[2] &= 0x7F; /* Mask DCLEN bit */
873 This was removed because the card was sometimes left to state
874 from which it couldn't be find anymore. If there is need
875 to more strict check still this have to be fixed.
877 if( ! ((creg[0] == 0x06) && (creg[1] == 0x41)) ) {
883 if( !((creg[2] == 0x36) && (creg[3] == 0xE0)) ) {
887 if( !((creg[2] == 0x40) && (creg[3] == 0x00)) )
891 if(eth16i_read_eeprom(ioaddr, E_NODEID_0) != 0)
894 if((eth16i_read_eeprom(ioaddr, E_NODEID_1) & 0xFF00) != 0x4B00)
900 static int eth16i_read_eeprom(int ioaddr, int offset)
904 eth16i_eeprom_cmd(ioaddr, EEPROM_READ | offset);
905 outb(CS_1, ioaddr + EEPROM_CTRL_REG);
906 data = eth16i_read_eeprom_word(ioaddr);
907 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
912 static int eth16i_read_eeprom_word(int ioaddr)
917 for(i = 16; i > 0; i--) {
918 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
920 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
923 ((inb(ioaddr + EEPROM_DATA_REG) & DI_1) ? 1 : 0);
931 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command)
935 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
936 outb(DI_0, ioaddr + EEPROM_DATA_REG);
937 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
938 outb(DI_1, ioaddr + EEPROM_DATA_REG);
939 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
941 for(i = 7; i >= 0; i--) {
942 short cmd = ( (command & (1 << i)) ? DI_1 : DI_0 );
943 outb(cmd, ioaddr + EEPROM_DATA_REG);
944 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
946 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
951 static int eth16i_open(struct net_device *dev)
953 struct eth16i_local *lp = netdev_priv(dev);
954 int ioaddr = dev->base_addr;
956 /* Powerup the chip */
957 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
959 /* Initialize the chip */
960 eth16i_initialize(dev, 0);
962 /* Set the transmit buffer size */
963 lp->tx_buf_size = eth16i_tx_buf_map[ETH16I_TX_BUF_SIZE & 0x03];
966 printk(KERN_DEBUG "%s: transmit buffer size %d\n",
967 dev->name, lp->tx_buf_size);
969 /* Now enable Transmitter and Receiver sections */
970 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
972 /* Now switch to register bank 2, for run time operation */
973 eth16i_select_regbank(2, ioaddr);
975 lp->open_time = jiffies;
978 lp->tx_queue_len = 0;
980 /* Turn on interrupts*/
981 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
983 netif_start_queue(dev);
987 static int eth16i_close(struct net_device *dev)
989 struct eth16i_local *lp = netdev_priv(dev);
990 int ioaddr = dev->base_addr;
994 /* Turn off interrupts*/
995 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
997 netif_stop_queue(dev);
1001 /* Disable transmit and receive */
1002 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1004 /* Reset the chip */
1005 /* outb(0xff, ioaddr + RESET); */
1006 /* outw(0xffff, ioaddr + TX_STATUS_REG); */
1008 outb(0x00, ioaddr + CONFIG_REG_1);
1013 static void eth16i_timeout(struct net_device *dev)
1015 struct eth16i_local *lp = netdev_priv(dev);
1016 int ioaddr = dev->base_addr;
1018 If we get here, some higher level has decided that
1019 we are broken. There should really be a "kick me"
1020 function call instead.
1023 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1024 printk(KERN_WARNING "%s: transmit timed out with status %04x, %s ?\n",
1026 inw(ioaddr + TX_STATUS_REG), (inb(ioaddr + TX_STATUS_REG) & TX_DONE) ?
1027 "IRQ conflict" : "network cable problem");
1029 dev->trans_start = jiffies;
1031 /* Let's dump all registers */
1032 if(eth16i_debug > 0) {
1033 printk(KERN_DEBUG "%s: timeout: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
1034 dev->name, inb(ioaddr + 0),
1035 inb(ioaddr + 1), inb(ioaddr + 2),
1036 inb(ioaddr + 3), inb(ioaddr + 4),
1038 inb(ioaddr + 6), inb(ioaddr + 7));
1040 printk(KERN_DEBUG "%s: transmit start reg: %02x. collision reg %02x\n",
1041 dev->name, inb(ioaddr + TRANSMIT_START_REG),
1042 inb(ioaddr + COL_16_REG));
1043 printk(KERN_DEBUG "lp->tx_queue = %d\n", lp->tx_queue);
1044 printk(KERN_DEBUG "lp->tx_queue_len = %d\n", lp->tx_queue_len);
1045 printk(KERN_DEBUG "lp->tx_started = %d\n", lp->tx_started);
1047 lp->stats.tx_errors++;
1049 dev->trans_start = jiffies;
1050 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1051 netif_wake_queue(dev);
1054 static int eth16i_tx(struct sk_buff *skb, struct net_device *dev)
1056 struct eth16i_local *lp = netdev_priv(dev);
1057 int ioaddr = dev->base_addr;
1059 ushort length = skb->len;
1061 unsigned long flags;
1063 if (length < ETH_ZLEN) {
1064 skb = skb_padto(skb, ETH_ZLEN);
1071 netif_stop_queue(dev);
1073 /* Turn off TX interrupts */
1074 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1076 /* We would be better doing the disable_irq tricks the 3c509 does,
1077 that would make this suck a lot less */
1079 spin_lock_irqsave(&lp->lock, flags);
1081 if( (length + 2) > (lp->tx_buf_size - lp->tx_queue_len)) {
1082 if(eth16i_debug > 0)
1083 printk(KERN_WARNING "%s: Transmit buffer full.\n", dev->name);
1086 outw(length, ioaddr + DATAPORT);
1088 if( ioaddr < 0x1000 )
1089 outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
1091 unsigned char frag = length % 4;
1092 outsl(ioaddr + DATAPORT, buf, length >> 2);
1094 outsw(ioaddr + DATAPORT, (buf + (length & 0xFFFC)), 1);
1096 outsw(ioaddr + DATAPORT,
1097 (buf + (length & 0xFFFC) + 2), 1);
1100 lp->tx_buffered_packets++;
1101 lp->tx_buffered_bytes = length;
1103 lp->tx_queue_len += length + 2;
1105 lp->tx_buf_busy = 0;
1107 if(lp->tx_started == 0) {
1108 /* If the transmitter is idle..always trigger a transmit */
1109 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1111 lp->tx_queue_len = 0;
1112 dev->trans_start = jiffies;
1114 netif_wake_queue(dev);
1116 else if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1117 /* There is still more room for one more packet in tx buffer */
1118 netif_wake_queue(dev);
1121 spin_unlock_irqrestore(&lp->lock, flags);
1123 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1124 /* Turn TX interrupts back on */
1125 /* outb(TX_INTR_DONE | TX_INTR_16_COL, ioaddr + TX_INTR_REG); */
1131 static void eth16i_rx(struct net_device *dev)
1133 struct eth16i_local *lp = netdev_priv(dev);
1134 int ioaddr = dev->base_addr;
1135 int boguscount = MAX_RX_LOOP;
1137 /* Loop until all packets have been read */
1138 while( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) {
1140 /* Read status byte from receive buffer */
1141 ushort status = inw(ioaddr + DATAPORT);
1143 /* Get the size of the packet from receive buffer */
1144 ushort pkt_len = inw(ioaddr + DATAPORT);
1146 if(eth16i_debug > 4)
1147 printk(KERN_DEBUG "%s: Receiving packet mode %02x status %04x.\n",
1149 inb(ioaddr + RECEIVE_MODE_REG), status);
1151 if( !(status & PKT_GOOD) ) {
1152 lp->stats.rx_errors++;
1154 if( (pkt_len < ETH_ZLEN) || (pkt_len > ETH_FRAME_LEN) ) {
1155 lp->stats.rx_length_errors++;
1160 eth16i_skip_packet(dev);
1161 lp->stats.rx_dropped++;
1164 else { /* Ok so now we should have a good packet */
1165 struct sk_buff *skb;
1167 skb = dev_alloc_skb(pkt_len + 3);
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 lp->stats.rx_dropped++;
1180 Now let's get the packet out of buffer.
1181 size is (pkt_len + 1) >> 1, cause we are now reading words
1182 and it have to be even aligned.
1186 insw(ioaddr + DATAPORT, skb_put(skb, pkt_len),
1187 (pkt_len + 1) >> 1);
1189 unsigned char *buf = skb_put(skb, pkt_len);
1190 unsigned char frag = pkt_len % 4;
1192 insl(ioaddr + DATAPORT, buf, pkt_len >> 2);
1195 unsigned short rest[2];
1196 rest[0] = inw( ioaddr + DATAPORT );
1198 rest[1] = inw( ioaddr + DATAPORT );
1200 memcpy(buf + (pkt_len & 0xfffc), (char *)rest, frag);
1204 skb->protocol=eth_type_trans(skb, dev);
1206 if( eth16i_debug > 5 ) {
1208 printk(KERN_DEBUG "%s: Received packet of length %d.\n",
1209 dev->name, pkt_len);
1210 for(i = 0; i < 14; i++)
1211 printk(KERN_DEBUG " %02x", skb->data[i]);
1212 printk(KERN_DEBUG ".\n");
1215 dev->last_rx = jiffies;
1216 lp->stats.rx_packets++;
1217 lp->stats.rx_bytes += pkt_len;
1221 if(--boguscount <= 0)
1227 static irqreturn_t eth16i_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1229 struct net_device *dev = dev_id;
1230 struct eth16i_local *lp;
1231 int ioaddr = 0, status;
1234 ioaddr = dev->base_addr;
1235 lp = netdev_priv(dev);
1237 /* Turn off all interrupts from adapter */
1238 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1240 /* eth16i_tx won't be called */
1241 spin_lock(&lp->lock);
1243 status = inw(ioaddr + TX_STATUS_REG); /* Get the status */
1244 outw(status, ioaddr + TX_STATUS_REG); /* Clear status bits */
1249 if(eth16i_debug > 3)
1250 printk(KERN_DEBUG "%s: Interrupt with status %04x.\n", dev->name, status);
1252 if( status & 0x7f00 ) {
1254 lp->stats.rx_errors++;
1256 if(status & (BUS_RD_ERR << 8) )
1257 printk(KERN_WARNING "%s: Bus read error.\n",dev->name);
1258 if(status & (SHORT_PKT_ERR << 8) ) lp->stats.rx_length_errors++;
1259 if(status & (ALIGN_ERR << 8) ) lp->stats.rx_frame_errors++;
1260 if(status & (CRC_ERR << 8) ) lp->stats.rx_crc_errors++;
1261 if(status & (RX_BUF_OVERFLOW << 8) ) lp->stats.rx_over_errors++;
1263 if( status & 0x001a) {
1265 lp->stats.tx_errors++;
1267 if(status & CR_LOST) lp->stats.tx_carrier_errors++;
1268 if(status & TX_JABBER_ERR) lp->stats.tx_window_errors++;
1271 if(status & COLLISION) {
1272 lp->stats.collisions +=
1273 ((inb(ioaddr+TRANSMIT_MODE_REG) & 0xF0) >> 4);
1276 if(status & COLLISIONS_16) {
1277 if(lp->col_16 < MAX_COL_16) {
1279 lp->stats.collisions++;
1280 /* Resume transmitting, skip failed packet */
1281 outb(0x02, ioaddr + COL_16_REG);
1284 printk(KERN_WARNING "%s: bailing out due to many consecutive 16-in-a-row collisions. Network cable problem?\n", dev->name);
1289 if( status & 0x00ff ) { /* Let's check the transmit status reg */
1291 if(status & TX_DONE) { /* The transmit has been done */
1292 lp->stats.tx_packets = lp->tx_buffered_packets;
1293 lp->stats.tx_bytes += lp->tx_buffered_bytes;
1296 if(lp->tx_queue) { /* Is there still packets ? */
1297 /* There was packet(s) so start transmitting and write also
1298 how many packets there is to be sended */
1299 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1301 lp->tx_queue_len = 0;
1307 netif_wake_queue(dev);
1311 if( ( status & 0x8000 ) ||
1312 ( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) ) {
1313 eth16i_rx(dev); /* We have packet in receive buffer */
1316 /* Turn interrupts back on */
1317 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1319 if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1320 /* There is still more room for one more packet in tx buffer */
1321 netif_wake_queue(dev);
1324 spin_unlock(&lp->lock);
1326 return IRQ_RETVAL(handled);
1329 static void eth16i_skip_packet(struct net_device *dev)
1331 int ioaddr = dev->base_addr;
1333 inw(ioaddr + DATAPORT);
1334 inw(ioaddr + DATAPORT);
1335 inw(ioaddr + DATAPORT);
1337 outb(SKIP_RX_PACKET, ioaddr + FILTER_SELF_RX_REG);
1338 while( inb( ioaddr + FILTER_SELF_RX_REG ) != 0);
1341 static void eth16i_reset(struct net_device *dev)
1343 struct eth16i_local *lp = netdev_priv(dev);
1344 int ioaddr = dev->base_addr;
1346 if(eth16i_debug > 1)
1347 printk(KERN_DEBUG "%s: Resetting device.\n", dev->name);
1349 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1350 outw(0xffff, ioaddr + TX_STATUS_REG);
1351 eth16i_select_regbank(2, ioaddr);
1354 lp->tx_buf_busy = 0;
1356 lp->tx_queue_len = 0;
1357 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
1360 static void eth16i_multicast(struct net_device *dev)
1362 int ioaddr = dev->base_addr;
1364 if(dev->mc_count || dev->flags&(IFF_ALLMULTI|IFF_PROMISC))
1366 dev->flags|=IFF_PROMISC; /* Must do this */
1367 outb(3, ioaddr + RECEIVE_MODE_REG);
1369 outb(2, ioaddr + RECEIVE_MODE_REG);
1373 static struct net_device_stats *eth16i_get_stats(struct net_device *dev)
1375 struct eth16i_local *lp = netdev_priv(dev);
1379 static void eth16i_select_regbank(unsigned char banknbr, int ioaddr)
1383 data = inb(ioaddr + CONFIG_REG_1);
1384 outb( ((data & 0xF3) | ( (banknbr & 0x03) << 2)), ioaddr + CONFIG_REG_1);
1389 static ushort eth16i_parse_mediatype(const char* s)
1392 return E_PORT_FROM_EPROM;
1394 if (!strncmp(s, "bnc", 3))
1396 else if (!strncmp(s, "tp", 2))
1398 else if (!strncmp(s, "dix", 3))
1400 else if (!strncmp(s, "auto", 4))
1403 return E_PORT_FROM_EPROM;
1406 #define MAX_ETH16I_CARDS 4 /* Max number of Eth16i cards per module */
1408 static struct net_device *dev_eth16i[MAX_ETH16I_CARDS];
1409 static int io[MAX_ETH16I_CARDS];
1411 static int irq[MAX_ETH16I_CARDS];
1413 static char* mediatype[MAX_ETH16I_CARDS];
1414 static int debug = -1;
1416 MODULE_AUTHOR("Mika Kuoppala <miku@iki.fi>");
1417 MODULE_DESCRIPTION("ICL EtherTeam 16i/32 driver");
1418 MODULE_LICENSE("GPL");
1421 MODULE_PARM(io, "1-" __MODULE_STRING(MAX_ETH16I_CARDS) "i");
1422 MODULE_PARM_DESC(io, "eth16i I/O base address(es)");
1425 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_ETH16I_CARDS) "i");
1426 MODULE_PARM_DESC(irq, "eth16i interrupt request number");
1429 MODULE_PARM(mediatype, "1-" __MODULE_STRING(MAX_ETH16I_CARDS) "s");
1430 MODULE_PARM_DESC(mediatype, "eth16i media type of interface(s) (bnc,tp,dix,auto,eprom)");
1432 MODULE_PARM(debug, "i");
1433 MODULE_PARM_DESC(debug, "eth16i debug level (0-6)");
1435 int init_module(void)
1437 int this_dev, found = 0;
1438 struct net_device *dev;
1440 for (this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1441 dev = alloc_etherdev(sizeof(struct eth16i_local));
1445 dev->base_addr = io[this_dev];
1448 eth16i_debug = debug;
1450 if(eth16i_debug > 1)
1451 printk(KERN_NOTICE "eth16i(%d): interface type %s\n", this_dev, mediatype[this_dev] ? mediatype[this_dev] : "none" );
1453 dev->if_port = eth16i_parse_mediatype(mediatype[this_dev]);
1455 if(io[this_dev] == 0) {
1456 if(this_dev != 0) /* Only autoprobe 1st one */
1459 printk(KERN_NOTICE "eth16i.c: Presently autoprobing (not recommended) for a single card.\n");
1462 if (do_eth16i_probe(dev) == 0) {
1463 if (register_netdev(dev) == 0) {
1464 dev_eth16i[found++] = dev;
1467 free_irq(dev->irq, dev);
1468 release_region(dev->base_addr, ETH16I_IO_EXTENT);
1470 printk(KERN_WARNING "eth16i.c No Eth16i card found (i/o = 0x%x).\n",
1480 void cleanup_module(void)
1484 for(this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1485 struct net_device *dev = dev_eth16i[this_dev];
1488 unregister_netdev(dev);
1489 free_irq(dev->irq, dev);
1490 release_region(dev->base_addr, ETH16I_IO_EXTENT);
1499 * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c eth16i.c"
1500 * alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict -prototypes -O6 -c eth16i.c"
1507 /* End of file eth16i.c */