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 static const struct net_device_ops at1700_netdev_ops = {
253 .ndo_open = net_open,
254 .ndo_stop = net_close,
255 .ndo_start_xmit = net_send_packet,
256 .ndo_set_multicast_list = set_rx_mode,
257 .ndo_tx_timeout = net_tx_timeout,
258 .ndo_change_mtu = eth_change_mtu,
259 .ndo_set_mac_address = eth_mac_addr,
260 .ndo_validate_addr = eth_validate_addr,
263 /* The Fujitsu datasheet suggests that the NIC be probed for by checking its
264 "signature", the default bit pattern after a reset. This *doesn't* work --
265 there is no way to reset the bus interface without a complete power-cycle!
267 It turns out that ATI came to the same conclusion I did: the only thing
268 that can be done is checking a few bits and then diving right into an
271 static int __init at1700_probe1(struct net_device *dev, int ioaddr)
273 char fmv_irqmap[4] = {3, 7, 10, 15};
274 char fmv_irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
275 char at1700_irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15};
276 unsigned int i, irq, is_fmv18x = 0, is_at1700 = 0;
277 int slot, ret = -ENODEV;
278 struct net_local *lp = netdev_priv(dev);
280 if (!request_region(ioaddr, AT1700_IO_EXTENT, DRV_NAME))
283 /* Resetting the chip doesn't reset the ISA interface, so don't bother.
284 That means we have to be careful with the register values we probe
288 printk("at1700 probe at %#x, eeprom is %4.4x %4.4x %4.4x ctrl %4.4x.\n",
289 ioaddr, read_eeprom(ioaddr, 4), read_eeprom(ioaddr, 5),
290 read_eeprom(ioaddr, 6), inw(ioaddr + EEPROM_Ctrl));
293 #ifdef CONFIG_MCA_LEGACY
294 /* rEnE (rene@bss.lu): got this from 3c509 driver source , adapted for AT1720 */
296 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch, heavily
297 modified by Chris Beauregard (cpbeaure@csclub.uwaterloo.ca)
298 to support standard MCA probing. */
300 /* redone for multi-card detection by ZP Gu (zpg@castle.net) */
301 /* now works as a module */
308 for (j = 0; at1720_mca_adapters[j].name != NULL; j ++) {
310 while (slot != MCA_NOTFOUND) {
312 slot = mca_find_unused_adapter( at1720_mca_adapters[j].id, slot );
313 if (slot == MCA_NOTFOUND) break;
315 /* if we get this far, an adapter has been detected and is
318 pos3 = mca_read_stored_pos( slot, 3 );
319 pos4 = mca_read_stored_pos( slot, 4 );
321 for (l_i = 0; l_i < 0x09; l_i++)
322 if (( pos3 & 0x07) == at1700_ioaddr_pattern[l_i])
324 ioaddr = at1700_mca_probe_list[l_i];
326 for (irq = 0; irq < 0x10; irq++)
327 if (((((pos4>>4) & 0x0f) | (pos3 & 0xf0)) & 0xff) == at1700_irq_pattern[irq])
330 /* probing for a card at a particular IO/IRQ */
331 if ((dev->irq && dev->irq != irq) ||
332 (dev->base_addr && dev->base_addr != ioaddr)) {
333 slot++; /* probing next slot */
340 mca_set_adapter_name( slot, at1720_mca_adapters[j].name );
341 mca_mark_as_used(slot);
346 /* if we get here, we didn't find an MCA adapter - try ISA */
350 /* We must check for the EEPROM-config boards first, else accessing
351 IOCONFIG0 will move the board! */
352 if (at1700_probe_list[inb(ioaddr + IOCONFIG1) & 0x07] == ioaddr
353 && read_eeprom(ioaddr, 4) == 0x0000
354 && (read_eeprom(ioaddr, 5) & 0xff00) == 0xF400)
356 else if (inb(ioaddr + SAPROM ) == 0x00
357 && inb(ioaddr + SAPROM + 1) == 0x00
358 && inb(ioaddr + SAPROM + 2) == 0x0e)
364 #ifdef CONFIG_MCA_LEGACY
368 /* Reset the internal state machines. */
369 outb(0, ioaddr + RESET);
372 irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
373 | (read_eeprom(ioaddr, 0)>>14)];
375 /* Check PnP mode for FMV-183/184/183A/184A. */
376 /* This PnP routine is very poor. IO and IRQ should be known. */
377 if (inb(ioaddr + CARDSTATUS1) & 0x20) {
379 for (i = 0; i < 8; i++) {
380 if (irq == fmv_irqmap_pnp[i])
387 if (fmv18x_probe_list[inb(ioaddr + IOCONFIG) & 0x07] != ioaddr)
389 irq = fmv_irqmap[(inb(ioaddr + IOCONFIG)>>6) & 0x03];
393 printk("%s: %s found at %#3x, IRQ %d, address ", dev->name,
394 is_at1700 ? "AT1700" : "FMV-18X", ioaddr, irq);
396 dev->base_addr = ioaddr;
400 for(i = 0; i < 3; i++) {
401 unsigned short eeprom_val = read_eeprom(ioaddr, 4+i);
402 ((unsigned short *)dev->dev_addr)[i] = ntohs(eeprom_val);
405 for(i = 0; i < 6; i++) {
406 unsigned char val = inb(ioaddr + SAPROM + i);
407 dev->dev_addr[i] = val;
410 printk("%pM", dev->dev_addr);
412 /* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
413 rather than 150 ohm shielded twisted pair compensation.
414 0x0000 == auto-sense the interface
415 0x0800 == use TP interface
416 0x1800 == use coax interface
419 const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"};
421 ushort setup_value = read_eeprom(ioaddr, 12);
422 dev->if_port = setup_value >> 8;
424 ushort setup_value = inb(ioaddr + CARDSTATUS);
425 switch (setup_value & 0x07) {
426 case 0x01: /* 10base5 */
427 case 0x02: /* 10base2 */
428 dev->if_port = 0x18; break;
429 case 0x04: /* 10baseT */
430 dev->if_port = 0x08; break;
431 default: /* auto-sense */
432 dev->if_port = 0x00; break;
435 printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
438 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
439 bus access, two 4K Tx queues, and disabled Tx and Rx. */
440 outb(0xda, ioaddr + CONFIG_0);
442 /* Set the station address in bank zero. */
443 outb(0x00, ioaddr + CONFIG_1);
444 for (i = 0; i < 6; i++)
445 outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
447 /* Switch to bank 1 and set the multicast table to accept none. */
448 outb(0x04, ioaddr + CONFIG_1);
449 for (i = 0; i < 8; i++)
450 outb(0x00, ioaddr + PORT_OFFSET(8 + i));
453 /* Switch to bank 2 */
454 /* Lock our I/O address, and set manual processing mode for 16 collisions. */
455 outb(0x08, ioaddr + CONFIG_1);
456 outb(dev->if_port, ioaddr + MODE13);
457 outb(0x00, ioaddr + COL16CNTL);
462 dev->netdev_ops = &at1700_netdev_ops;
463 dev->watchdog_timeo = TX_TIMEOUT;
465 spin_lock_init(&lp->lock);
467 lp->jumpered = is_fmv18x;
469 /* Snarf the interrupt vector now. */
470 ret = request_irq(irq, &net_interrupt, 0, DRV_NAME, dev);
472 printk(KERN_ERR "AT1700 at %#3x is unusable due to a "
473 "conflict on IRQ %d.\n",
481 #ifdef CONFIG_MCA_LEGACY
483 mca_mark_as_unused(slot);
486 release_region(ioaddr, AT1700_IO_EXTENT);
491 /* EEPROM_Ctrl bits. */
492 #define EE_SHIFT_CLK 0x40 /* EEPROM shift clock, in reg. 16. */
493 #define EE_CS 0x20 /* EEPROM chip select, in reg. 16. */
494 #define EE_DATA_WRITE 0x80 /* EEPROM chip data in, in reg. 17. */
495 #define EE_DATA_READ 0x80 /* EEPROM chip data out, in reg. 17. */
497 /* The EEPROM commands include the alway-set leading bit. */
498 #define EE_WRITE_CMD (5 << 6)
499 #define EE_READ_CMD (6 << 6)
500 #define EE_ERASE_CMD (7 << 6)
502 static int __init read_eeprom(long ioaddr, int location)
505 unsigned short retval = 0;
506 long ee_addr = ioaddr + EEPROM_Ctrl;
507 long ee_daddr = ioaddr + EEPROM_Data;
508 int read_cmd = location | EE_READ_CMD;
510 /* Shift the read command bits out. */
511 for (i = 9; i >= 0; i--) {
512 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
513 outb(EE_CS, ee_addr);
514 outb(dataval, ee_daddr);
515 outb(EE_CS | EE_SHIFT_CLK, ee_addr); /* EEPROM clock tick. */
517 outb(EE_DATA_WRITE, ee_daddr);
518 for (i = 16; i > 0; i--) {
519 outb(EE_CS, ee_addr);
520 outb(EE_CS | EE_SHIFT_CLK, ee_addr);
521 retval = (retval << 1) | ((inb(ee_daddr) & EE_DATA_READ) ? 1 : 0);
524 /* Terminate the EEPROM access. */
525 outb(EE_CS, ee_addr);
526 outb(EE_SHIFT_CLK, ee_addr);
533 static int net_open(struct net_device *dev)
535 struct net_local *lp = netdev_priv(dev);
536 int ioaddr = dev->base_addr;
538 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
539 bus access, and two 4K Tx queues. */
540 outb(0x5a, ioaddr + CONFIG_0);
542 /* Powerup, switch to register bank 2, and enable the Rx and Tx. */
543 outb(0xe8, ioaddr + CONFIG_1);
546 lp->tx_queue_ready = 1;
549 lp->tx_queue_len = 0;
551 /* Turn on hardware Tx and Rx interrupts. */
552 outb(0x82, ioaddr + TX_INTR);
553 outb(0x81, ioaddr + RX_INTR);
555 /* Enable the IRQ on boards of fmv18x it is feasible. */
557 outb(0x80, ioaddr + IOCONFIG1);
560 netif_start_queue(dev);
564 static void net_tx_timeout (struct net_device *dev)
566 struct net_local *lp = netdev_priv(dev);
567 int ioaddr = dev->base_addr;
569 printk ("%s: transmit timed out with status %04x, %s?\n", dev->name,
570 inw (ioaddr + STATUS), inb (ioaddr + TX_STATUS) & 0x80
571 ? "IRQ conflict" : "network cable problem");
572 printk ("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
573 dev->name, inw(ioaddr + TX_STATUS), inw(ioaddr + TX_INTR), inw(ioaddr + TX_MODE),
574 inw(ioaddr + CONFIG_0), inw(ioaddr + DATAPORT), inw(ioaddr + TX_START),
575 inw(ioaddr + MODE13 - 1), inw(ioaddr + RX_CTRL));
576 dev->stats.tx_errors++;
577 /* ToDo: We should try to restart the adaptor... */
578 outw(0xffff, ioaddr + MODE24);
579 outw (0xffff, ioaddr + TX_STATUS);
580 outb (0x5a, ioaddr + CONFIG_0);
581 outb (0xe8, ioaddr + CONFIG_1);
582 outw (0x8182, ioaddr + TX_INTR);
583 outb (0x00, ioaddr + TX_START);
584 outb (0x03, ioaddr + COL16CNTL);
586 dev->trans_start = jiffies;
589 lp->tx_queue_ready = 1;
592 lp->tx_queue_len = 0;
594 netif_wake_queue(dev);
598 static int net_send_packet (struct sk_buff *skb, struct net_device *dev)
600 struct net_local *lp = netdev_priv(dev);
601 int ioaddr = dev->base_addr;
602 short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
603 short len = skb->len;
604 unsigned char *buf = skb->data;
605 static u8 pad[ETH_ZLEN];
607 netif_stop_queue (dev);
609 /* We may not start transmitting unless we finish transferring
610 a packet into the Tx queue. During executing the following
611 codes we possibly catch a Tx interrupt. Thus we flag off
612 tx_queue_ready, so that we prevent the interrupt routine
613 (net_interrupt) to start transmitting. */
614 lp->tx_queue_ready = 0;
616 outw (length, ioaddr + DATAPORT);
618 outsw (ioaddr + DATAPORT, buf, len >> 1);
619 /* Check for dribble byte */
621 outw(skb->data[skb->len-1], ioaddr + DATAPORT);
624 /* Check for packet padding */
625 if (length != skb->len)
626 outsw(ioaddr + DATAPORT, pad, (length - len + 1) >> 1);
629 lp->tx_queue_len += length + 2;
631 lp->tx_queue_ready = 1;
633 if (lp->tx_started == 0) {
634 /* If the Tx is idle, always trigger a transmit. */
635 outb (0x80 | lp->tx_queue, ioaddr + TX_START);
637 lp->tx_queue_len = 0;
638 dev->trans_start = jiffies;
640 netif_start_queue (dev);
641 } else if (lp->tx_queue_len < 4096 - 1502)
642 /* Yes, there is room for one more packet. */
643 netif_start_queue (dev);
649 /* The typical workload of the driver:
650 Handle the network interface interrupts. */
651 static irqreturn_t net_interrupt(int irq, void *dev_id)
653 struct net_device *dev = dev_id;
654 struct net_local *lp;
659 printk ("at1700_interrupt(): irq %d for unknown device.\n", irq);
663 ioaddr = dev->base_addr;
664 lp = netdev_priv(dev);
666 spin_lock (&lp->lock);
668 status = inw(ioaddr + TX_STATUS);
669 outw(status, ioaddr + TX_STATUS);
672 printk("%s: Interrupt with status %04x.\n", dev->name, status);
673 if (lp->rx_started == 0 &&
674 (status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
676 We cannot execute net_rx more than once at the same time for
677 the same device. During executing net_rx, we possibly catch a
678 Tx interrupt. Thus we flag on rx_started, so that we prevent
679 the interrupt routine (net_interrupt) to dive into net_rx
683 outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
685 outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
688 if (status & 0x00ff) {
691 /* More than 16 collisions occurred */
693 printk("%s: 16 Collision occur during Txing.\n", dev->name);
694 /* Cancel sending a packet. */
695 outb(0x03, ioaddr + COL16CNTL);
696 dev->stats.collisions++;
699 dev->stats.tx_packets++;
700 /* The Tx queue has any packets and is not being
701 transferred a packet from the host, start
703 if (lp->tx_queue && lp->tx_queue_ready) {
704 outb(0x80 | lp->tx_queue, ioaddr + TX_START);
706 lp->tx_queue_len = 0;
707 dev->trans_start = jiffies;
708 netif_wake_queue (dev);
711 netif_wake_queue (dev);
716 spin_unlock (&lp->lock);
717 return IRQ_RETVAL(handled);
720 /* We have a good packet(s), get it/them out of the buffers. */
722 net_rx(struct net_device *dev)
724 int ioaddr = dev->base_addr;
727 while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
728 ushort status = inw(ioaddr + DATAPORT);
729 ushort pkt_len = inw(ioaddr + DATAPORT);
732 printk("%s: Rxing packet mode %02x status %04x.\n",
733 dev->name, inb(ioaddr + RX_MODE), status);
734 #ifndef final_version
736 outb(0x05, ioaddr + RX_CTRL);
741 if ((status & 0xF0) != 0x20) { /* There was an error. */
742 dev->stats.rx_errors++;
743 if (status & 0x08) dev->stats.rx_length_errors++;
744 if (status & 0x04) dev->stats.rx_frame_errors++;
745 if (status & 0x02) dev->stats.rx_crc_errors++;
746 if (status & 0x01) dev->stats.rx_over_errors++;
748 /* Malloc up new buffer. */
751 if (pkt_len > 1550) {
752 printk("%s: The AT1700 claimed a very large packet, size %d.\n",
754 /* Prime the FIFO and then flush the packet. */
755 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
756 outb(0x05, ioaddr + RX_CTRL);
757 dev->stats.rx_errors++;
760 skb = dev_alloc_skb(pkt_len+3);
762 printk("%s: Memory squeeze, dropping packet (len %d).\n",
764 /* Prime the FIFO and then flush the packet. */
765 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
766 outb(0x05, ioaddr + RX_CTRL);
767 dev->stats.rx_dropped++;
772 insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
773 skb->protocol=eth_type_trans(skb, dev);
775 dev->stats.rx_packets++;
776 dev->stats.rx_bytes += pkt_len;
778 if (--boguscount <= 0)
782 /* If any worth-while packets have been received, dev_rint()
783 has done a mark_bh(NET_BH) for us and will work on them
784 when we get to the bottom-half routine. */
787 for (i = 0; i < 20; i++) {
788 if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
790 inw(ioaddr + DATAPORT); /* dummy status read */
791 outb(0x05, ioaddr + RX_CTRL);
795 printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
796 dev->name, inb(ioaddr + RX_MODE), i);
801 /* The inverse routine to net_open(). */
802 static int net_close(struct net_device *dev)
804 struct net_local *lp = netdev_priv(dev);
805 int ioaddr = dev->base_addr;
807 netif_stop_queue(dev);
809 /* Set configuration register 0 to disable Tx and Rx. */
810 outb(0xda, ioaddr + CONFIG_0);
812 /* No statistic counters on the chip to update. */
814 /* Disable the IRQ on boards of fmv18x where it is feasible. */
816 outb(0x00, ioaddr + IOCONFIG1);
817 free_irq(dev->irq, dev);
820 /* Power-down the chip. Green, green, green! */
821 outb(0x00, ioaddr + CONFIG_1);
826 Set the multicast/promiscuous mode for this adaptor.
830 set_rx_mode(struct net_device *dev)
832 int ioaddr = dev->base_addr;
833 struct net_local *lp = netdev_priv(dev);
834 unsigned char mc_filter[8]; /* Multicast hash filter */
837 if (dev->flags & IFF_PROMISC) {
838 memset(mc_filter, 0xff, sizeof(mc_filter));
839 outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
840 } else if (dev->mc_count > MC_FILTERBREAK
841 || (dev->flags & IFF_ALLMULTI)) {
842 /* Too many to filter perfectly -- accept all multicasts. */
843 memset(mc_filter, 0xff, sizeof(mc_filter));
844 outb(2, ioaddr + RX_MODE); /* Use normal mode. */
845 } else if (dev->mc_count == 0) {
846 memset(mc_filter, 0x00, sizeof(mc_filter));
847 outb(1, ioaddr + RX_MODE); /* Ignore almost all multicasts. */
849 struct dev_mc_list *mclist;
852 memset(mc_filter, 0, sizeof(mc_filter));
853 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
854 i++, mclist = mclist->next) {
856 ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 26;
857 mc_filter[bit >> 3] |= (1 << bit);
859 outb(0x02, ioaddr + RX_MODE); /* Use normal mode. */
862 spin_lock_irqsave (&lp->lock, flags);
863 if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
865 int saved_bank = inw(ioaddr + CONFIG_0);
866 /* Switch to bank 1 and set the multicast table. */
867 outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
868 for (i = 0; i < 8; i++)
869 outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
870 memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
871 outw(saved_bank, ioaddr + CONFIG_0);
873 spin_unlock_irqrestore (&lp->lock, flags);
878 static struct net_device *dev_at1700;
880 module_param(io, int, 0);
881 module_param(irq, int, 0);
882 module_param(net_debug, int, 0);
883 MODULE_PARM_DESC(io, "AT1700/FMV18X I/O base address");
884 MODULE_PARM_DESC(irq, "AT1700/FMV18X IRQ number");
885 MODULE_PARM_DESC(net_debug, "AT1700/FMV18X debug level (0-6)");
887 static int __init at1700_module_init(void)
890 printk("at1700: You should not use auto-probing with insmod!\n");
891 dev_at1700 = at1700_probe(-1);
892 if (IS_ERR(dev_at1700))
893 return PTR_ERR(dev_at1700);
897 static void __exit at1700_module_exit(void)
899 unregister_netdev(dev_at1700);
900 cleanup_card(dev_at1700);
901 free_netdev(dev_at1700);
903 module_init(at1700_module_init);
904 module_exit(at1700_module_exit);
906 MODULE_LICENSE("GPL");