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>
165 #include <asm/system.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)
462 struct net_device * __init eth16i_probe(int unit)
464 struct net_device *dev = alloc_etherdev(sizeof(struct eth16i_local));
468 return ERR_PTR(-ENOMEM);
470 sprintf(dev->name, "eth%d", unit);
471 netdev_boot_setup_check(dev);
473 err = do_eth16i_probe(dev);
483 static int __init eth16i_probe1(struct net_device *dev, int ioaddr)
485 struct eth16i_local *lp = netdev_priv(dev);
486 static unsigned version_printed;
489 /* Let's grab the region */
490 if (!request_region(ioaddr, ETH16I_IO_EXTENT, cardname))
494 The MB86985 chip has on register which holds information in which
495 io address the chip lies. First read this register and compare
496 it to our current io address and if match then this could
500 if(ioaddr < 0x1000) {
501 if(eth16i_portlist[(inb(ioaddr + JUMPERLESS_CONFIG) & 0x07)]
508 /* Now we will go a bit deeper and try to find the chip's signature */
510 if(eth16i_check_signature(ioaddr) != 0) {
516 Now it seems that we have found a ethernet chip in this particular
517 ioaddr. The MB86985 chip has this feature, that when you read a
518 certain register it will increase it's io base address to next
519 configurable slot. Now when we have found the chip, first thing is
520 to make sure that the chip's ioaddr will hold still here.
523 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
524 outb(0x00, ioaddr + TRANSCEIVER_MODE_REG);
526 outb(0x00, ioaddr + RESET); /* Reset some parts of chip */
527 BITSET(ioaddr + CONFIG_REG_0, BIT(7)); /* Disable the data link */
529 if( (eth16i_debug & version_printed++) == 0)
530 printk(KERN_INFO "%s", version);
532 dev->base_addr = ioaddr;
533 dev->irq = eth16i_get_irq(ioaddr);
535 /* Try to obtain interrupt vector */
537 if ((retval = request_irq(dev->irq, (void *)ð16i_interrupt, 0, cardname, dev))) {
538 printk(KERN_WARNING "%s at %#3x, but is unusable due to conflicting IRQ %d.\n",
539 cardname, ioaddr, dev->irq);
543 printk(KERN_INFO "%s: %s at %#3x, IRQ %d, ",
544 dev->name, cardname, ioaddr, dev->irq);
547 /* Now we will have to lock the chip's io address */
548 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
549 outb(0x38, ioaddr + TRANSCEIVER_MODE_REG);
551 eth16i_initialize(dev, 1); /* Initialize rest of the chip's registers */
553 /* Now let's same some energy by shutting down the chip ;) */
554 BITCLR(ioaddr + CONFIG_REG_1, POWERUP);
556 /* Initialize the device structure */
557 memset(lp, 0, sizeof(struct eth16i_local));
558 dev->open = eth16i_open;
559 dev->stop = eth16i_close;
560 dev->hard_start_xmit = eth16i_tx;
561 dev->get_stats = eth16i_get_stats;
562 dev->set_multicast_list = eth16i_multicast;
563 dev->tx_timeout = eth16i_timeout;
564 dev->watchdog_timeo = TX_TIMEOUT;
565 spin_lock_init(&lp->lock);
567 retval = register_netdev(dev);
572 free_irq(dev->irq, dev);
574 release_region(ioaddr, ETH16I_IO_EXTENT);
579 static void eth16i_initialize(struct net_device *dev, int boot)
581 int ioaddr = dev->base_addr;
583 unsigned char node_byte = 0;
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);
592 for(i = 0; i < 6; i++) {
593 outb( ((unsigned char *)dev->dev_addr)[i], ioaddr + NODE_ID_0 + i);
595 printk("%02x", inb(ioaddr + NODE_ID_0 + i));
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);
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.
612 eth16i_select_regbank(2, ioaddr);
615 node_w = eth16i_read_eeprom(ioaddr, E_PRODUCT_CFG);
617 if( (node_w & 0xFF00) == 0x0800)
618 node_byte |= BUFFER_WIDTH_8;
620 node_byte |= SRAM_BS1;
622 if( (node_w & 0x00FF) == 64)
623 node_byte |= SRAM_BS0;
625 node_byte |= DLC_EN | SRAM_CYCLE_TIME_100NS | (ETH16I_TX_BUF_SIZE << 2);
627 outb(node_byte, ioaddr + CONFIG_REG_0);
629 /* We shall halt the transmitting, if 16 collisions are detected */
630 outb(HALT_ON_16, ioaddr + COL_16_REG);
633 /* if_port already set by init_module() */
635 dev->if_port = (dev->mem_start < E_PORT_FROM_EPROM) ?
636 dev->mem_start : E_PORT_FROM_EPROM;
639 /* Set interface port type */
641 char *porttype[] = {"BNC", "DIX", "TP", "AUTO", "FROM_EPROM" };
646 case E_PORT_FROM_EPROM:
647 dev->if_port = eth16i_read_eeprom(ioaddr, E_PORT_SELECT);
651 dev->if_port = eth16i_probe_port(ioaddr);
660 printk(" %s interface.\n", porttype[dev->if_port]);
662 eth16i_set_port(ioaddr, dev->if_port);
665 /* Set Receive Mode to normal operation */
666 outb(MODE_2, ioaddr + RECEIVE_MODE_REG);
669 static int eth16i_probe_port(int ioaddr)
673 unsigned char dummy_packet[64];
675 /* Powerup the chip */
676 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
678 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
680 eth16i_select_regbank(NODE_ID_RB, ioaddr);
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);
687 dummy_packet[12] = 0x00;
688 dummy_packet[13] = 0x04;
689 memset(dummy_packet + 14, 0, sizeof(dummy_packet) - 14);
691 eth16i_select_regbank(2, ioaddr);
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);
699 printk(KERN_DEBUG "Set port number %d\n", i);
701 retcode = eth16i_send_probe_packet(ioaddr, dummy_packet, 64);
703 retcode = eth16i_receive_probe_packet(ioaddr);
706 printk(KERN_DEBUG "Eth16i interface port found at %d\n", i);
712 printk(KERN_DEBUG "TRANSMIT_DONE timeout when probing interface port\n");
716 if( eth16i_debug > 1)
717 printk(KERN_DEBUG "Using default port\n");
722 static void eth16i_set_port(int ioaddr, int porttype)
724 unsigned short temp = 0;
726 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
727 outb(LOOPBACK_CONTROL, ioaddr + TRANSMIT_MODE_REG);
729 temp |= DIS_AUTO_PORT_SEL;
742 BITSET(ioaddr + TRANSMIT_MODE_REG, CONTROL_OUTPUT);
746 outb(temp, ioaddr + TRANSCEIVER_MODE_REG);
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));
755 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l)
759 outb(0xff, ioaddr + TX_STATUS_REG);
761 outw(l, ioaddr + DATAPORT);
762 outsw(ioaddr + DATAPORT, (unsigned short *)b, (l + 1) >> 1);
765 outb(TX_START | 1, ioaddr + TRANSMIT_START_REG);
767 while( (inb(ioaddr + TX_STATUS_REG) & 0x80) == 0) {
768 if( (jiffies - starttime) > TX_TIMEOUT) {
776 static int eth16i_receive_probe_packet(int ioaddr)
782 while((inb(ioaddr + TX_STATUS_REG) & 0x20) == 0) {
783 if( (jiffies - starttime) > TX_TIMEOUT) {
786 printk(KERN_DEBUG "Timeout occurred waiting transmit packet received\n");
788 while((inb(ioaddr + RX_STATUS_REG) & 0x80) == 0) {
789 if( (jiffies - starttime) > TX_TIMEOUT) {
791 printk(KERN_DEBUG "Timeout occurred waiting receive packet\n");
797 printk(KERN_DEBUG "RECEIVE_PACKET\n");
798 return(0); /* Found receive packet */
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));
807 return(0); /* Return success */
811 static int eth16i_set_irq(struct net_device* dev)
813 const int ioaddr = dev->base_addr;
814 const int irq = dev->irq;
817 if(ioaddr < 0x1000) {
818 while(eth16i_irqmap[i] && eth16i_irqmap[i] != irq)
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);
829 printk(KERN_NOTICE "%s: EISA Interrupt cannot be set. Use EISA Configuration utility.\n", dev->name);
837 static int __init eth16i_get_irq(int ioaddr)
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) {
851 return( eth32i_irqmap[ index ] );
855 static int __init eth16i_check_signature(int ioaddr)
858 unsigned char creg[4] = { 0 };
860 for(i = 0; i < 4 ; i++) {
862 creg[i] = inb(ioaddr + TRANSMIT_MODE_REG + i);
865 printk("eth16i: read signature byte %x at %x\n",
867 ioaddr + TRANSMIT_MODE_REG + i);
870 creg[0] &= 0x0F; /* Mask collision cnr */
871 creg[2] &= 0x7F; /* Mask DCLEN bit */
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.
879 if( ! ((creg[0] == 0x06) && (creg[1] == 0x41)) ) {
885 if( !((creg[2] == 0x36) && (creg[3] == 0xE0)) ) {
889 if( !((creg[2] == 0x40) && (creg[3] == 0x00)) )
893 if(eth16i_read_eeprom(ioaddr, E_NODEID_0) != 0)
896 if((eth16i_read_eeprom(ioaddr, E_NODEID_1) & 0xFF00) != 0x4B00)
902 static int eth16i_read_eeprom(int ioaddr, int offset)
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);
914 static int eth16i_read_eeprom_word(int ioaddr)
919 for(i = 16; i > 0; i--) {
920 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
922 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
925 ((inb(ioaddr + EEPROM_DATA_REG) & DI_1) ? 1 : 0);
933 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command)
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);
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);
948 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
953 static int eth16i_open(struct net_device *dev)
955 struct eth16i_local *lp = netdev_priv(dev);
956 int ioaddr = dev->base_addr;
958 /* Powerup the chip */
959 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
961 /* Initialize the chip */
962 eth16i_initialize(dev, 0);
964 /* Set the transmit buffer size */
965 lp->tx_buf_size = eth16i_tx_buf_map[ETH16I_TX_BUF_SIZE & 0x03];
968 printk(KERN_DEBUG "%s: transmit buffer size %d\n",
969 dev->name, lp->tx_buf_size);
971 /* Now enable Transmitter and Receiver sections */
972 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
974 /* Now switch to register bank 2, for run time operation */
975 eth16i_select_regbank(2, ioaddr);
977 lp->open_time = jiffies;
980 lp->tx_queue_len = 0;
982 /* Turn on interrupts*/
983 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
985 netif_start_queue(dev);
989 static int eth16i_close(struct net_device *dev)
991 struct eth16i_local *lp = netdev_priv(dev);
992 int ioaddr = dev->base_addr;
996 /* Turn off interrupts*/
997 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
999 netif_stop_queue(dev);
1003 /* Disable transmit and receive */
1004 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1006 /* Reset the chip */
1007 /* outb(0xff, ioaddr + RESET); */
1008 /* outw(0xffff, ioaddr + TX_STATUS_REG); */
1010 outb(0x00, ioaddr + CONFIG_REG_1);
1015 static void eth16i_timeout(struct net_device *dev)
1017 struct eth16i_local *lp = netdev_priv(dev);
1018 int ioaddr = dev->base_addr;
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.
1025 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1026 printk(KERN_WARNING "%s: transmit timed out with status %04x, %s ?\n",
1028 inw(ioaddr + TX_STATUS_REG), (inb(ioaddr + TX_STATUS_REG) & TX_DONE) ?
1029 "IRQ conflict" : "network cable problem");
1031 dev->trans_start = jiffies;
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),
1040 inb(ioaddr + 6), inb(ioaddr + 7));
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);
1049 lp->stats.tx_errors++;
1051 dev->trans_start = jiffies;
1052 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1053 netif_wake_queue(dev);
1056 static int eth16i_tx(struct sk_buff *skb, struct net_device *dev)
1058 struct eth16i_local *lp = netdev_priv(dev);
1059 int ioaddr = dev->base_addr;
1061 ushort length = skb->len;
1063 unsigned long flags;
1065 if (length < ETH_ZLEN) {
1066 skb = skb_padto(skb, ETH_ZLEN);
1073 netif_stop_queue(dev);
1075 /* Turn off TX interrupts */
1076 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1078 /* We would be better doing the disable_irq tricks the 3c509 does,
1079 that would make this suck a lot less */
1081 spin_lock_irqsave(&lp->lock, flags);
1083 if( (length + 2) > (lp->tx_buf_size - lp->tx_queue_len)) {
1084 if(eth16i_debug > 0)
1085 printk(KERN_WARNING "%s: Transmit buffer full.\n", dev->name);
1088 outw(length, ioaddr + DATAPORT);
1090 if( ioaddr < 0x1000 )
1091 outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
1093 unsigned char frag = length % 4;
1094 outsl(ioaddr + DATAPORT, buf, length >> 2);
1096 outsw(ioaddr + DATAPORT, (buf + (length & 0xFFFC)), 1);
1098 outsw(ioaddr + DATAPORT,
1099 (buf + (length & 0xFFFC) + 2), 1);
1102 lp->tx_buffered_packets++;
1103 lp->tx_buffered_bytes = length;
1105 lp->tx_queue_len += length + 2;
1107 lp->tx_buf_busy = 0;
1109 if(lp->tx_started == 0) {
1110 /* If the transmitter is idle..always trigger a transmit */
1111 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1113 lp->tx_queue_len = 0;
1114 dev->trans_start = jiffies;
1116 netif_wake_queue(dev);
1118 else if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1119 /* There is still more room for one more packet in tx buffer */
1120 netif_wake_queue(dev);
1123 spin_unlock_irqrestore(&lp->lock, flags);
1125 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1126 /* Turn TX interrupts back on */
1127 /* outb(TX_INTR_DONE | TX_INTR_16_COL, ioaddr + TX_INTR_REG); */
1133 static void eth16i_rx(struct net_device *dev)
1135 struct eth16i_local *lp = netdev_priv(dev);
1136 int ioaddr = dev->base_addr;
1137 int boguscount = MAX_RX_LOOP;
1139 /* Loop until all packets have been read */
1140 while( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) {
1142 /* Read status byte from receive buffer */
1143 ushort status = inw(ioaddr + DATAPORT);
1145 /* Get the size of the packet from receive buffer */
1146 ushort pkt_len = inw(ioaddr + DATAPORT);
1148 if(eth16i_debug > 4)
1149 printk(KERN_DEBUG "%s: Receiving packet mode %02x status %04x.\n",
1151 inb(ioaddr + RECEIVE_MODE_REG), status);
1153 if( !(status & PKT_GOOD) ) {
1154 lp->stats.rx_errors++;
1156 if( (pkt_len < ETH_ZLEN) || (pkt_len > ETH_FRAME_LEN) ) {
1157 lp->stats.rx_length_errors++;
1162 eth16i_skip_packet(dev);
1163 lp->stats.rx_dropped++;
1166 else { /* Ok so now we should have a good packet */
1167 struct sk_buff *skb;
1169 skb = dev_alloc_skb(pkt_len + 3);
1171 printk(KERN_WARNING "%s: Could'n allocate memory for packet (len %d)\n",
1172 dev->name, pkt_len);
1173 eth16i_skip_packet(dev);
1174 lp->stats.rx_dropped++;
1182 Now let's get the packet out of buffer.
1183 size is (pkt_len + 1) >> 1, cause we are now reading words
1184 and it have to be even aligned.
1188 insw(ioaddr + DATAPORT, skb_put(skb, pkt_len),
1189 (pkt_len + 1) >> 1);
1191 unsigned char *buf = skb_put(skb, pkt_len);
1192 unsigned char frag = pkt_len % 4;
1194 insl(ioaddr + DATAPORT, buf, pkt_len >> 2);
1197 unsigned short rest[2];
1198 rest[0] = inw( ioaddr + DATAPORT );
1200 rest[1] = inw( ioaddr + DATAPORT );
1202 memcpy(buf + (pkt_len & 0xfffc), (char *)rest, frag);
1206 skb->protocol=eth_type_trans(skb, dev);
1208 if( eth16i_debug > 5 ) {
1210 printk(KERN_DEBUG "%s: Received packet of length %d.\n",
1211 dev->name, pkt_len);
1212 for(i = 0; i < 14; i++)
1213 printk(KERN_DEBUG " %02x", skb->data[i]);
1214 printk(KERN_DEBUG ".\n");
1217 dev->last_rx = jiffies;
1218 lp->stats.rx_packets++;
1219 lp->stats.rx_bytes += pkt_len;
1223 if(--boguscount <= 0)
1229 static irqreturn_t eth16i_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1231 struct net_device *dev = dev_id;
1232 struct eth16i_local *lp;
1233 int ioaddr = 0, status;
1236 ioaddr = dev->base_addr;
1237 lp = netdev_priv(dev);
1239 /* Turn off all interrupts from adapter */
1240 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1242 /* eth16i_tx won't be called */
1243 spin_lock(&lp->lock);
1245 status = inw(ioaddr + TX_STATUS_REG); /* Get the status */
1246 outw(status, ioaddr + TX_STATUS_REG); /* Clear status bits */
1251 if(eth16i_debug > 3)
1252 printk(KERN_DEBUG "%s: Interrupt with status %04x.\n", dev->name, status);
1254 if( status & 0x7f00 ) {
1256 lp->stats.rx_errors++;
1258 if(status & (BUS_RD_ERR << 8) )
1259 printk(KERN_WARNING "%s: Bus read error.\n",dev->name);
1260 if(status & (SHORT_PKT_ERR << 8) ) lp->stats.rx_length_errors++;
1261 if(status & (ALIGN_ERR << 8) ) lp->stats.rx_frame_errors++;
1262 if(status & (CRC_ERR << 8) ) lp->stats.rx_crc_errors++;
1263 if(status & (RX_BUF_OVERFLOW << 8) ) lp->stats.rx_over_errors++;
1265 if( status & 0x001a) {
1267 lp->stats.tx_errors++;
1269 if(status & CR_LOST) lp->stats.tx_carrier_errors++;
1270 if(status & TX_JABBER_ERR) lp->stats.tx_window_errors++;
1273 if(status & COLLISION) {
1274 lp->stats.collisions +=
1275 ((inb(ioaddr+TRANSMIT_MODE_REG) & 0xF0) >> 4);
1278 if(status & COLLISIONS_16) {
1279 if(lp->col_16 < MAX_COL_16) {
1281 lp->stats.collisions++;
1282 /* Resume transmitting, skip failed packet */
1283 outb(0x02, ioaddr + COL_16_REG);
1286 printk(KERN_WARNING "%s: bailing out due to many consecutive 16-in-a-row collisions. Network cable problem?\n", dev->name);
1291 if( status & 0x00ff ) { /* Let's check the transmit status reg */
1293 if(status & TX_DONE) { /* The transmit has been done */
1294 lp->stats.tx_packets = lp->tx_buffered_packets;
1295 lp->stats.tx_bytes += lp->tx_buffered_bytes;
1298 if(lp->tx_queue) { /* Is there still packets ? */
1299 /* There was packet(s) so start transmitting and write also
1300 how many packets there is to be sended */
1301 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1303 lp->tx_queue_len = 0;
1309 netif_wake_queue(dev);
1313 if( ( status & 0x8000 ) ||
1314 ( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) ) {
1315 eth16i_rx(dev); /* We have packet in receive buffer */
1318 /* Turn interrupts back on */
1319 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1321 if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1322 /* There is still more room for one more packet in tx buffer */
1323 netif_wake_queue(dev);
1326 spin_unlock(&lp->lock);
1328 return IRQ_RETVAL(handled);
1331 static void eth16i_skip_packet(struct net_device *dev)
1333 int ioaddr = dev->base_addr;
1335 inw(ioaddr + DATAPORT);
1336 inw(ioaddr + DATAPORT);
1337 inw(ioaddr + DATAPORT);
1339 outb(SKIP_RX_PACKET, ioaddr + FILTER_SELF_RX_REG);
1340 while( inb( ioaddr + FILTER_SELF_RX_REG ) != 0);
1343 static void eth16i_reset(struct net_device *dev)
1345 struct eth16i_local *lp = netdev_priv(dev);
1346 int ioaddr = dev->base_addr;
1348 if(eth16i_debug > 1)
1349 printk(KERN_DEBUG "%s: Resetting device.\n", dev->name);
1351 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1352 outw(0xffff, ioaddr + TX_STATUS_REG);
1353 eth16i_select_regbank(2, ioaddr);
1356 lp->tx_buf_busy = 0;
1358 lp->tx_queue_len = 0;
1359 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
1362 static void eth16i_multicast(struct net_device *dev)
1364 int ioaddr = dev->base_addr;
1366 if(dev->mc_count || dev->flags&(IFF_ALLMULTI|IFF_PROMISC))
1368 dev->flags|=IFF_PROMISC; /* Must do this */
1369 outb(3, ioaddr + RECEIVE_MODE_REG);
1371 outb(2, ioaddr + RECEIVE_MODE_REG);
1375 static struct net_device_stats *eth16i_get_stats(struct net_device *dev)
1377 struct eth16i_local *lp = netdev_priv(dev);
1381 static void eth16i_select_regbank(unsigned char banknbr, int ioaddr)
1385 data = inb(ioaddr + CONFIG_REG_1);
1386 outb( ((data & 0xF3) | ( (banknbr & 0x03) << 2)), ioaddr + CONFIG_REG_1);
1391 static ushort eth16i_parse_mediatype(const char* s)
1394 return E_PORT_FROM_EPROM;
1396 if (!strncmp(s, "bnc", 3))
1398 else if (!strncmp(s, "tp", 2))
1400 else if (!strncmp(s, "dix", 3))
1402 else if (!strncmp(s, "auto", 4))
1405 return E_PORT_FROM_EPROM;
1408 #define MAX_ETH16I_CARDS 4 /* Max number of Eth16i cards per module */
1410 static struct net_device *dev_eth16i[MAX_ETH16I_CARDS];
1411 static int io[MAX_ETH16I_CARDS];
1413 static int irq[MAX_ETH16I_CARDS];
1415 static char* mediatype[MAX_ETH16I_CARDS];
1416 static int debug = -1;
1418 MODULE_AUTHOR("Mika Kuoppala <miku@iki.fi>");
1419 MODULE_DESCRIPTION("ICL EtherTeam 16i/32 driver");
1420 MODULE_LICENSE("GPL");
1423 module_param_array(io, int, NULL, 0);
1424 MODULE_PARM_DESC(io, "eth16i I/O base address(es)");
1427 module_param_array(irq, int, NULL, 0);
1428 MODULE_PARM_DESC(irq, "eth16i interrupt request number");
1431 module_param_array(mediatype, charp, NULL, 0);
1432 MODULE_PARM_DESC(mediatype, "eth16i media type of interface(s) (bnc,tp,dix,auto,eprom)");
1434 module_param(debug, int, 0);
1435 MODULE_PARM_DESC(debug, "eth16i debug level (0-6)");
1437 int init_module(void)
1439 int this_dev, found = 0;
1440 struct net_device *dev;
1442 for (this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1443 dev = alloc_etherdev(sizeof(struct eth16i_local));
1447 dev->base_addr = io[this_dev];
1450 eth16i_debug = debug;
1452 if(eth16i_debug > 1)
1453 printk(KERN_NOTICE "eth16i(%d): interface type %s\n", this_dev, mediatype[this_dev] ? mediatype[this_dev] : "none" );
1455 dev->if_port = eth16i_parse_mediatype(mediatype[this_dev]);
1457 if(io[this_dev] == 0) {
1458 if(this_dev != 0) /* Only autoprobe 1st one */
1461 printk(KERN_NOTICE "eth16i.c: Presently autoprobing (not recommended) for a single card.\n");
1464 if (do_eth16i_probe(dev) == 0) {
1465 dev_eth16i[found++] = dev;
1468 printk(KERN_WARNING "eth16i.c No Eth16i card found (i/o = 0x%x).\n",
1478 void cleanup_module(void)
1482 for(this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1483 struct net_device *dev = dev_eth16i[this_dev];
1486 unregister_netdev(dev);
1487 free_irq(dev->irq, dev);
1488 release_region(dev->base_addr, ETH16I_IO_EXTENT);
1497 * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c eth16i.c"
1498 * alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict -prototypes -O6 -c eth16i.c"
1505 /* End of file eth16i.c */