1 /* at1700.c: A network device driver for the Allied Telesis AT1700.
3 Written 1993-98 by Donald Becker.
5 Copyright 1993 United States Government as represented by the
6 Director, National Security Agency.
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 becker@scyld.com, or C/O
12 Scyld Computing Corporation
13 410 Severn Ave., Suite 210
16 This is a device driver for the Allied Telesis AT1700, and
17 Fujitsu FMV-181/182/181A/182A/183/184/183A/184A, which are
18 straight-forward Fujitsu MB86965 implementations.
20 Modification for Fujitsu FMV-18X cards is done by Yutaka Tamiya
21 (tamy@flab.fujitsu.co.jp).
24 The Fujitsu MB86965 datasheet.
26 After the initial version of this driver was written Gerry Sawkins of
27 ATI provided their EEPROM configuration code header file.
28 Thanks to NIIBE Yutaka <gniibe@mri.co.jp> for bug fixes.
30 MCA bus (AT1720) support by Rene Schmit <rene@bss.lu>
33 The MB86965 has a design flaw that makes all probes unreliable. Not
34 only is it difficult to detect, it also moves around in I/O space in
35 response to inb()s from other device probes!
38 #include <linux/errno.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/mca-legacy.h>
42 #include <linux/module.h>
43 #include <linux/kernel.h>
44 #include <linux/types.h>
45 #include <linux/fcntl.h>
46 #include <linux/interrupt.h>
47 #include <linux/ioport.h>
49 #include <linux/skbuff.h>
50 #include <linux/slab.h>
51 #include <linux/string.h>
52 #include <linux/init.h>
53 #include <linux/crc32.h>
54 #include <linux/bitops.h>
56 #include <asm/system.h>
60 static char version[] __initdata =
61 "at1700.c:v1.16 9/11/06 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
63 #define DRV_NAME "at1700"
65 /* Tunable parameters. */
67 /* When to switch from the 64-entry multicast filter to Rx-all-multicast. */
68 #define MC_FILTERBREAK 64
70 /* These unusual address orders are used to verify the CONFIG register. */
72 static int fmv18x_probe_list[] __initdata = {
73 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x300, 0x340, 0
80 static unsigned at1700_probe_list[] __initdata = {
81 0x260, 0x280, 0x2a0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
87 #ifdef CONFIG_MCA_LEGACY
88 static int at1700_ioaddr_pattern[] __initdata = {
89 0x00, 0x04, 0x01, 0x05, 0x02, 0x06, 0x03, 0x07
92 static int at1700_mca_probe_list[] __initdata = {
93 0x400, 0x1400, 0x2400, 0x3400, 0x4400, 0x5400, 0x6400, 0x7400, 0
96 static int at1700_irq_pattern[] __initdata = {
97 0x00, 0x00, 0x00, 0x30, 0x70, 0xb0, 0x00, 0x00,
98 0x00, 0xf0, 0x34, 0x74, 0xb4, 0x00, 0x00, 0xf4, 0x00
102 /* use 0 for production, 1 for verification, >2 for debug */
106 static unsigned int net_debug = NET_DEBUG;
108 typedef unsigned char uchar;
110 /* Information that need to be kept for each board. */
113 unsigned char mc_filter[8];
114 uint jumpered:1; /* Set iff the board has jumper config. */
115 uint tx_started:1; /* Packets are on the Tx queue. */
116 uint tx_queue_ready:1; /* Tx queue is ready to be sent. */
117 uint rx_started:1; /* Packets are Rxing. */
118 uchar tx_queue; /* Number of packet on the Tx queue. */
119 char mca_slot; /* -1 means ISA */
120 ushort tx_queue_len; /* Current length of the Tx queue. */
124 /* Offsets from the base address. */
128 #define TX_INTR 2 /* Bit-mapped interrupt enable registers. */
132 #define CONFIG_0 6 /* Misc. configuration settings. */
134 /* Run-time register bank 2 definitions. */
135 #define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */
137 #define COL16CNTL 11 /* Controll Reg for 16 collisions */
140 /* Configuration registers only on the '865A/B chips. */
141 #define EEPROM_Ctrl 16
142 #define EEPROM_Data 17
143 #define CARDSTATUS 16 /* FMV-18x Card Status */
144 #define CARDSTATUS1 17 /* FMV-18x Card Status */
145 #define IOCONFIG 18 /* Either read the jumper, or move the I/O. */
147 #define SAPROM 20 /* The station address PROM, if no EEPROM. */
149 #define RESET 31 /* Write to reset some parts of the chip. */
150 #define AT1700_IO_EXTENT 32
151 #define PORT_OFFSET(o) (o)
154 #define TX_TIMEOUT 10
157 /* Index to functions, as function prototypes. */
159 static int at1700_probe1(struct net_device *dev, int ioaddr);
160 static int read_eeprom(long ioaddr, int location);
161 static int net_open(struct net_device *dev);
162 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
163 static irqreturn_t net_interrupt(int irq, void *dev_id);
164 static void net_rx(struct net_device *dev);
165 static int net_close(struct net_device *dev);
166 static void set_rx_mode(struct net_device *dev);
167 static void net_tx_timeout (struct net_device *dev);
170 #ifdef CONFIG_MCA_LEGACY
171 struct at1720_mca_adapters_struct {
175 /* rEnE : maybe there are others I don't know off... */
177 static struct at1720_mca_adapters_struct at1720_mca_adapters[] __initdata = {
178 { "Allied Telesys AT1720AT", 0x6410 },
179 { "Allied Telesys AT1720BT", 0x6413 },
180 { "Allied Telesys AT1720T", 0x6416 },
185 /* Check for a network adaptor of this type, and return '0' iff one exists.
186 If dev->base_addr == 0, probe all likely locations.
187 If dev->base_addr == 1, always return failure.
188 If dev->base_addr == 2, allocate space for the device and return success
189 (detachable devices only).
192 static int io = 0x260;
196 static void cleanup_card(struct net_device *dev)
198 #ifdef CONFIG_MCA_LEGACY
199 struct net_local *lp = netdev_priv(dev);
200 if (lp->mca_slot >= 0)
201 mca_mark_as_unused(lp->mca_slot);
203 free_irq(dev->irq, NULL);
204 release_region(dev->base_addr, AT1700_IO_EXTENT);
207 struct net_device * __init at1700_probe(int unit)
209 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
214 return ERR_PTR(-ENODEV);
217 sprintf(dev->name, "eth%d", unit);
218 netdev_boot_setup_check(dev);
226 if (io > 0x1ff) { /* Check a single specified location. */
227 err = at1700_probe1(dev, io);
228 } else if (io != 0) { /* Don't probe at all. */
231 for (port = at1700_probe_list; *port; port++) {
232 if (at1700_probe1(dev, *port) == 0)
241 err = register_netdev(dev);
252 /* The Fujitsu datasheet suggests that the NIC be probed for by checking its
253 "signature", the default bit pattern after a reset. This *doesn't* work --
254 there is no way to reset the bus interface without a complete power-cycle!
256 It turns out that ATI came to the same conclusion I did: the only thing
257 that can be done is checking a few bits and then diving right into an
260 static int __init at1700_probe1(struct net_device *dev, int ioaddr)
262 char fmv_irqmap[4] = {3, 7, 10, 15};
263 char fmv_irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
264 char at1700_irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15};
265 unsigned int i, irq, is_fmv18x = 0, is_at1700 = 0;
266 int slot, ret = -ENODEV;
267 struct net_local *lp = netdev_priv(dev);
269 if (!request_region(ioaddr, AT1700_IO_EXTENT, DRV_NAME))
272 /* Resetting the chip doesn't reset the ISA interface, so don't bother.
273 That means we have to be careful with the register values we probe
277 printk("at1700 probe at %#x, eeprom is %4.4x %4.4x %4.4x ctrl %4.4x.\n",
278 ioaddr, read_eeprom(ioaddr, 4), read_eeprom(ioaddr, 5),
279 read_eeprom(ioaddr, 6), inw(ioaddr + EEPROM_Ctrl));
282 #ifdef CONFIG_MCA_LEGACY
283 /* rEnE (rene@bss.lu): got this from 3c509 driver source , adapted for AT1720 */
285 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch, heavily
286 modified by Chris Beauregard (cpbeaure@csclub.uwaterloo.ca)
287 to support standard MCA probing. */
289 /* redone for multi-card detection by ZP Gu (zpg@castle.net) */
290 /* now works as a module */
297 for (j = 0; at1720_mca_adapters[j].name != NULL; j ++) {
299 while (slot != MCA_NOTFOUND) {
301 slot = mca_find_unused_adapter( at1720_mca_adapters[j].id, slot );
302 if (slot == MCA_NOTFOUND) break;
304 /* if we get this far, an adapter has been detected and is
307 pos3 = mca_read_stored_pos( slot, 3 );
308 pos4 = mca_read_stored_pos( slot, 4 );
310 for (l_i = 0; l_i < 0x09; l_i++)
311 if (( pos3 & 0x07) == at1700_ioaddr_pattern[l_i])
313 ioaddr = at1700_mca_probe_list[l_i];
315 for (irq = 0; irq < 0x10; irq++)
316 if (((((pos4>>4) & 0x0f) | (pos3 & 0xf0)) & 0xff) == at1700_irq_pattern[irq])
319 /* probing for a card at a particular IO/IRQ */
320 if ((dev->irq && dev->irq != irq) ||
321 (dev->base_addr && dev->base_addr != ioaddr)) {
322 slot++; /* probing next slot */
329 mca_set_adapter_name( slot, at1720_mca_adapters[j].name );
330 mca_mark_as_used(slot);
335 /* if we get here, we didn't find an MCA adapter - try ISA */
339 /* We must check for the EEPROM-config boards first, else accessing
340 IOCONFIG0 will move the board! */
341 if (at1700_probe_list[inb(ioaddr + IOCONFIG1) & 0x07] == ioaddr
342 && read_eeprom(ioaddr, 4) == 0x0000
343 && (read_eeprom(ioaddr, 5) & 0xff00) == 0xF400)
345 else if (inb(ioaddr + SAPROM ) == 0x00
346 && inb(ioaddr + SAPROM + 1) == 0x00
347 && inb(ioaddr + SAPROM + 2) == 0x0e)
353 #ifdef CONFIG_MCA_LEGACY
357 /* Reset the internal state machines. */
358 outb(0, ioaddr + RESET);
361 irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
362 | (read_eeprom(ioaddr, 0)>>14)];
364 /* Check PnP mode for FMV-183/184/183A/184A. */
365 /* This PnP routine is very poor. IO and IRQ should be known. */
366 if (inb(ioaddr + CARDSTATUS1) & 0x20) {
368 for (i = 0; i < 8; i++) {
369 if (irq == fmv_irqmap_pnp[i])
376 if (fmv18x_probe_list[inb(ioaddr + IOCONFIG) & 0x07] != ioaddr)
378 irq = fmv_irqmap[(inb(ioaddr + IOCONFIG)>>6) & 0x03];
382 printk("%s: %s found at %#3x, IRQ %d, address ", dev->name,
383 is_at1700 ? "AT1700" : "FMV-18X", ioaddr, irq);
385 dev->base_addr = ioaddr;
389 for(i = 0; i < 3; i++) {
390 unsigned short eeprom_val = read_eeprom(ioaddr, 4+i);
391 ((unsigned short *)dev->dev_addr)[i] = ntohs(eeprom_val);
394 for(i = 0; i < 6; i++) {
395 unsigned char val = inb(ioaddr + SAPROM + i);
396 dev->dev_addr[i] = val;
399 printk("%pM", dev->dev_addr);
401 /* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
402 rather than 150 ohm shielded twisted pair compensation.
403 0x0000 == auto-sense the interface
404 0x0800 == use TP interface
405 0x1800 == use coax interface
408 const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"};
410 ushort setup_value = read_eeprom(ioaddr, 12);
411 dev->if_port = setup_value >> 8;
413 ushort setup_value = inb(ioaddr + CARDSTATUS);
414 switch (setup_value & 0x07) {
415 case 0x01: /* 10base5 */
416 case 0x02: /* 10base2 */
417 dev->if_port = 0x18; break;
418 case 0x04: /* 10baseT */
419 dev->if_port = 0x08; break;
420 default: /* auto-sense */
421 dev->if_port = 0x00; break;
424 printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
427 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
428 bus access, two 4K Tx queues, and disabled Tx and Rx. */
429 outb(0xda, ioaddr + CONFIG_0);
431 /* Set the station address in bank zero. */
432 outb(0x00, ioaddr + CONFIG_1);
433 for (i = 0; i < 6; i++)
434 outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
436 /* Switch to bank 1 and set the multicast table to accept none. */
437 outb(0x04, ioaddr + CONFIG_1);
438 for (i = 0; i < 8; i++)
439 outb(0x00, ioaddr + PORT_OFFSET(8 + i));
442 /* Switch to bank 2 */
443 /* Lock our I/O address, and set manual processing mode for 16 collisions. */
444 outb(0x08, ioaddr + CONFIG_1);
445 outb(dev->if_port, ioaddr + MODE13);
446 outb(0x00, ioaddr + COL16CNTL);
451 memset(lp, 0, sizeof(struct net_local));
453 dev->open = net_open;
454 dev->stop = net_close;
455 dev->hard_start_xmit = net_send_packet;
456 dev->set_multicast_list = &set_rx_mode;
457 dev->tx_timeout = net_tx_timeout;
458 dev->watchdog_timeo = TX_TIMEOUT;
460 spin_lock_init(&lp->lock);
462 lp->jumpered = is_fmv18x;
464 /* Snarf the interrupt vector now. */
465 ret = request_irq(irq, &net_interrupt, 0, DRV_NAME, dev);
467 printk(KERN_ERR "AT1700 at %#3x is unusable due to a "
468 "conflict on IRQ %d.\n",
476 #ifdef CONFIG_MCA_LEGACY
478 mca_mark_as_unused(slot);
481 release_region(ioaddr, AT1700_IO_EXTENT);
486 /* EEPROM_Ctrl bits. */
487 #define EE_SHIFT_CLK 0x40 /* EEPROM shift clock, in reg. 16. */
488 #define EE_CS 0x20 /* EEPROM chip select, in reg. 16. */
489 #define EE_DATA_WRITE 0x80 /* EEPROM chip data in, in reg. 17. */
490 #define EE_DATA_READ 0x80 /* EEPROM chip data out, in reg. 17. */
492 /* The EEPROM commands include the alway-set leading bit. */
493 #define EE_WRITE_CMD (5 << 6)
494 #define EE_READ_CMD (6 << 6)
495 #define EE_ERASE_CMD (7 << 6)
497 static int __init read_eeprom(long ioaddr, int location)
500 unsigned short retval = 0;
501 long ee_addr = ioaddr + EEPROM_Ctrl;
502 long ee_daddr = ioaddr + EEPROM_Data;
503 int read_cmd = location | EE_READ_CMD;
505 /* Shift the read command bits out. */
506 for (i = 9; i >= 0; i--) {
507 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
508 outb(EE_CS, ee_addr);
509 outb(dataval, ee_daddr);
510 outb(EE_CS | EE_SHIFT_CLK, ee_addr); /* EEPROM clock tick. */
512 outb(EE_DATA_WRITE, ee_daddr);
513 for (i = 16; i > 0; i--) {
514 outb(EE_CS, ee_addr);
515 outb(EE_CS | EE_SHIFT_CLK, ee_addr);
516 retval = (retval << 1) | ((inb(ee_daddr) & EE_DATA_READ) ? 1 : 0);
519 /* Terminate the EEPROM access. */
520 outb(EE_CS, ee_addr);
521 outb(EE_SHIFT_CLK, ee_addr);
528 static int net_open(struct net_device *dev)
530 struct net_local *lp = netdev_priv(dev);
531 int ioaddr = dev->base_addr;
533 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
534 bus access, and two 4K Tx queues. */
535 outb(0x5a, ioaddr + CONFIG_0);
537 /* Powerup, switch to register bank 2, and enable the Rx and Tx. */
538 outb(0xe8, ioaddr + CONFIG_1);
541 lp->tx_queue_ready = 1;
544 lp->tx_queue_len = 0;
546 /* Turn on hardware Tx and Rx interrupts. */
547 outb(0x82, ioaddr + TX_INTR);
548 outb(0x81, ioaddr + RX_INTR);
550 /* Enable the IRQ on boards of fmv18x it is feasible. */
552 outb(0x80, ioaddr + IOCONFIG1);
555 netif_start_queue(dev);
559 static void net_tx_timeout (struct net_device *dev)
561 struct net_local *lp = netdev_priv(dev);
562 int ioaddr = dev->base_addr;
564 printk ("%s: transmit timed out with status %04x, %s?\n", dev->name,
565 inw (ioaddr + STATUS), inb (ioaddr + TX_STATUS) & 0x80
566 ? "IRQ conflict" : "network cable problem");
567 printk ("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
568 dev->name, inw(ioaddr + TX_STATUS), inw(ioaddr + TX_INTR), inw(ioaddr + TX_MODE),
569 inw(ioaddr + CONFIG_0), inw(ioaddr + DATAPORT), inw(ioaddr + TX_START),
570 inw(ioaddr + MODE13 - 1), inw(ioaddr + RX_CTRL));
571 dev->stats.tx_errors++;
572 /* ToDo: We should try to restart the adaptor... */
573 outw(0xffff, ioaddr + MODE24);
574 outw (0xffff, ioaddr + TX_STATUS);
575 outb (0x5a, ioaddr + CONFIG_0);
576 outb (0xe8, ioaddr + CONFIG_1);
577 outw (0x8182, ioaddr + TX_INTR);
578 outb (0x00, ioaddr + TX_START);
579 outb (0x03, ioaddr + COL16CNTL);
581 dev->trans_start = jiffies;
584 lp->tx_queue_ready = 1;
587 lp->tx_queue_len = 0;
589 netif_wake_queue(dev);
593 static int net_send_packet (struct sk_buff *skb, struct net_device *dev)
595 struct net_local *lp = netdev_priv(dev);
596 int ioaddr = dev->base_addr;
597 short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
598 short len = skb->len;
599 unsigned char *buf = skb->data;
600 static u8 pad[ETH_ZLEN];
602 netif_stop_queue (dev);
604 /* We may not start transmitting unless we finish transferring
605 a packet into the Tx queue. During executing the following
606 codes we possibly catch a Tx interrupt. Thus we flag off
607 tx_queue_ready, so that we prevent the interrupt routine
608 (net_interrupt) to start transmitting. */
609 lp->tx_queue_ready = 0;
611 outw (length, ioaddr + DATAPORT);
613 outsw (ioaddr + DATAPORT, buf, len >> 1);
614 /* Check for dribble byte */
616 outw(skb->data[skb->len-1], ioaddr + DATAPORT);
619 /* Check for packet padding */
620 if (length != skb->len)
621 outsw(ioaddr + DATAPORT, pad, (length - len + 1) >> 1);
624 lp->tx_queue_len += length + 2;
626 lp->tx_queue_ready = 1;
628 if (lp->tx_started == 0) {
629 /* If the Tx is idle, always trigger a transmit. */
630 outb (0x80 | lp->tx_queue, ioaddr + TX_START);
632 lp->tx_queue_len = 0;
633 dev->trans_start = jiffies;
635 netif_start_queue (dev);
636 } else if (lp->tx_queue_len < 4096 - 1502)
637 /* Yes, there is room for one more packet. */
638 netif_start_queue (dev);
644 /* The typical workload of the driver:
645 Handle the network interface interrupts. */
646 static irqreturn_t net_interrupt(int irq, void *dev_id)
648 struct net_device *dev = dev_id;
649 struct net_local *lp;
654 printk ("at1700_interrupt(): irq %d for unknown device.\n", irq);
658 ioaddr = dev->base_addr;
659 lp = netdev_priv(dev);
661 spin_lock (&lp->lock);
663 status = inw(ioaddr + TX_STATUS);
664 outw(status, ioaddr + TX_STATUS);
667 printk("%s: Interrupt with status %04x.\n", dev->name, status);
668 if (lp->rx_started == 0 &&
669 (status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
671 We cannot execute net_rx more than once at the same time for
672 the same device. During executing net_rx, we possibly catch a
673 Tx interrupt. Thus we flag on rx_started, so that we prevent
674 the interrupt routine (net_interrupt) to dive into net_rx
678 outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
680 outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
683 if (status & 0x00ff) {
686 /* More than 16 collisions occurred */
688 printk("%s: 16 Collision occur during Txing.\n", dev->name);
689 /* Cancel sending a packet. */
690 outb(0x03, ioaddr + COL16CNTL);
691 dev->stats.collisions++;
694 dev->stats.tx_packets++;
695 /* The Tx queue has any packets and is not being
696 transferred a packet from the host, start
698 if (lp->tx_queue && lp->tx_queue_ready) {
699 outb(0x80 | lp->tx_queue, ioaddr + TX_START);
701 lp->tx_queue_len = 0;
702 dev->trans_start = jiffies;
703 netif_wake_queue (dev);
706 netif_wake_queue (dev);
711 spin_unlock (&lp->lock);
712 return IRQ_RETVAL(handled);
715 /* We have a good packet(s), get it/them out of the buffers. */
717 net_rx(struct net_device *dev)
719 int ioaddr = dev->base_addr;
722 while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
723 ushort status = inw(ioaddr + DATAPORT);
724 ushort pkt_len = inw(ioaddr + DATAPORT);
727 printk("%s: Rxing packet mode %02x status %04x.\n",
728 dev->name, inb(ioaddr + RX_MODE), status);
729 #ifndef final_version
731 outb(0x05, ioaddr + RX_CTRL);
736 if ((status & 0xF0) != 0x20) { /* There was an error. */
737 dev->stats.rx_errors++;
738 if (status & 0x08) dev->stats.rx_length_errors++;
739 if (status & 0x04) dev->stats.rx_frame_errors++;
740 if (status & 0x02) dev->stats.rx_crc_errors++;
741 if (status & 0x01) dev->stats.rx_over_errors++;
743 /* Malloc up new buffer. */
746 if (pkt_len > 1550) {
747 printk("%s: The AT1700 claimed a very large packet, size %d.\n",
749 /* Prime the FIFO and then flush the packet. */
750 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
751 outb(0x05, ioaddr + RX_CTRL);
752 dev->stats.rx_errors++;
755 skb = dev_alloc_skb(pkt_len+3);
757 printk("%s: Memory squeeze, dropping packet (len %d).\n",
759 /* Prime the FIFO and then flush the packet. */
760 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
761 outb(0x05, ioaddr + RX_CTRL);
762 dev->stats.rx_dropped++;
767 insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
768 skb->protocol=eth_type_trans(skb, dev);
770 dev->stats.rx_packets++;
771 dev->stats.rx_bytes += pkt_len;
773 if (--boguscount <= 0)
777 /* If any worth-while packets have been received, dev_rint()
778 has done a mark_bh(NET_BH) for us and will work on them
779 when we get to the bottom-half routine. */
782 for (i = 0; i < 20; i++) {
783 if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
785 inw(ioaddr + DATAPORT); /* dummy status read */
786 outb(0x05, ioaddr + RX_CTRL);
790 printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
791 dev->name, inb(ioaddr + RX_MODE), i);
796 /* The inverse routine to net_open(). */
797 static int net_close(struct net_device *dev)
799 struct net_local *lp = netdev_priv(dev);
800 int ioaddr = dev->base_addr;
802 netif_stop_queue(dev);
804 /* Set configuration register 0 to disable Tx and Rx. */
805 outb(0xda, ioaddr + CONFIG_0);
807 /* No statistic counters on the chip to update. */
809 /* Disable the IRQ on boards of fmv18x where it is feasible. */
811 outb(0x00, ioaddr + IOCONFIG1);
812 free_irq(dev->irq, dev);
815 /* Power-down the chip. Green, green, green! */
816 outb(0x00, ioaddr + CONFIG_1);
821 Set the multicast/promiscuous mode for this adaptor.
825 set_rx_mode(struct net_device *dev)
827 int ioaddr = dev->base_addr;
828 struct net_local *lp = netdev_priv(dev);
829 unsigned char mc_filter[8]; /* Multicast hash filter */
833 if (dev->flags & IFF_PROMISC) {
834 memset(mc_filter, 0xff, sizeof(mc_filter));
835 outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
836 } else if (dev->mc_count > MC_FILTERBREAK
837 || (dev->flags & IFF_ALLMULTI)) {
838 /* Too many to filter perfectly -- accept all multicasts. */
839 memset(mc_filter, 0xff, sizeof(mc_filter));
840 outb(2, ioaddr + RX_MODE); /* Use normal mode. */
841 } else if (dev->mc_count == 0) {
842 memset(mc_filter, 0x00, sizeof(mc_filter));
843 outb(1, ioaddr + RX_MODE); /* Ignore almost all multicasts. */
845 struct dev_mc_list *mclist;
848 memset(mc_filter, 0, sizeof(mc_filter));
849 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
850 i++, mclist = mclist->next) {
852 ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 26;
853 mc_filter[bit >> 3] |= (1 << bit);
855 outb(0x02, ioaddr + RX_MODE); /* Use normal mode. */
858 spin_lock_irqsave (&lp->lock, flags);
859 if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
860 int saved_bank = inw(ioaddr + CONFIG_0);
861 /* Switch to bank 1 and set the multicast table. */
862 outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
863 for (i = 0; i < 8; i++)
864 outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
865 memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
866 outw(saved_bank, ioaddr + CONFIG_0);
868 spin_unlock_irqrestore (&lp->lock, flags);
873 static struct net_device *dev_at1700;
875 module_param(io, int, 0);
876 module_param(irq, int, 0);
877 module_param(net_debug, int, 0);
878 MODULE_PARM_DESC(io, "AT1700/FMV18X I/O base address");
879 MODULE_PARM_DESC(irq, "AT1700/FMV18X IRQ number");
880 MODULE_PARM_DESC(net_debug, "AT1700/FMV18X debug level (0-6)");
882 static int __init at1700_module_init(void)
885 printk("at1700: You should not use auto-probing with insmod!\n");
886 dev_at1700 = at1700_probe(-1);
887 if (IS_ERR(dev_at1700))
888 return PTR_ERR(dev_at1700);
892 static void __exit at1700_module_exit(void)
894 unregister_netdev(dev_at1700);
895 cleanup_card(dev_at1700);
896 free_netdev(dev_at1700);
898 module_init(at1700_module_init);
899 module_exit(at1700_module_exit);
901 MODULE_LICENSE("GPL");
906 * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"
907 * alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"