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:v1.15 4/7/98 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. */
112 struct net_device_stats stats;
114 unsigned char mc_filter[8];
115 uint jumpered:1; /* Set iff the board has jumper config. */
116 uint tx_started:1; /* Packets are on the Tx queue. */
117 uint tx_queue_ready:1; /* Tx queue is ready to be sent. */
118 uint rx_started:1; /* Packets are Rxing. */
119 uchar tx_queue; /* Number of packet on the Tx queue. */
120 char mca_slot; /* -1 means ISA */
121 ushort tx_queue_len; /* Current length of the Tx queue. */
125 /* Offsets from the base address. */
129 #define TX_INTR 2 /* Bit-mapped interrupt enable registers. */
133 #define CONFIG_0 6 /* Misc. configuration settings. */
135 /* Run-time register bank 2 definitions. */
136 #define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */
138 #define COL16CNTL 11 /* Controll Reg for 16 collisions */
141 /* Configuration registers only on the '865A/B chips. */
142 #define EEPROM_Ctrl 16
143 #define EEPROM_Data 17
144 #define CARDSTATUS 16 /* FMV-18x Card Status */
145 #define CARDSTATUS1 17 /* FMV-18x Card Status */
146 #define IOCONFIG 18 /* Either read the jumper, or move the I/O. */
148 #define SAPROM 20 /* The station address PROM, if no EEPROM. */
150 #define RESET 31 /* Write to reset some parts of the chip. */
151 #define AT1700_IO_EXTENT 32
152 #define PORT_OFFSET(o) (o)
155 #define TX_TIMEOUT 10
158 /* Index to functions, as function prototypes. */
160 static int at1700_probe1(struct net_device *dev, int ioaddr);
161 static int read_eeprom(long ioaddr, int location);
162 static int net_open(struct net_device *dev);
163 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
164 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
165 static void net_rx(struct net_device *dev);
166 static int net_close(struct net_device *dev);
167 static struct net_device_stats *net_get_stats(struct net_device *dev);
168 static void set_rx_mode(struct net_device *dev);
169 static void net_tx_timeout (struct net_device *dev);
172 #ifdef CONFIG_MCA_LEGACY
173 struct at1720_mca_adapters_struct {
177 /* rEnE : maybe there are others I don't know off... */
179 static struct at1720_mca_adapters_struct at1720_mca_adapters[] __initdata = {
180 { "Allied Telesys AT1720AT", 0x6410 },
181 { "Allied Telesys AT1720BT", 0x6413 },
182 { "Allied Telesys AT1720T", 0x6416 },
187 /* Check for a network adaptor of this type, and return '0' iff one exists.
188 If dev->base_addr == 0, probe all likely locations.
189 If dev->base_addr == 1, always return failure.
190 If dev->base_addr == 2, allocate space for the device and return success
191 (detachable devices only).
194 static int io = 0x260;
198 static void cleanup_card(struct net_device *dev)
200 #ifdef CONFIG_MCA_LEGACY
201 struct net_local *lp = netdev_priv(dev);
202 if (lp->mca_slot >= 0)
203 mca_mark_as_unused(lp->mca_slot);
205 free_irq(dev->irq, NULL);
206 release_region(dev->base_addr, AT1700_IO_EXTENT);
209 struct net_device * __init at1700_probe(int unit)
211 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
216 return ERR_PTR(-ENODEV);
219 sprintf(dev->name, "eth%d", unit);
220 netdev_boot_setup_check(dev);
228 SET_MODULE_OWNER(dev);
230 if (io > 0x1ff) { /* Check a single specified location. */
231 err = at1700_probe1(dev, io);
232 } else if (io != 0) { /* Don't probe at all. */
235 for (port = at1700_probe_list; *port; port++) {
236 if (at1700_probe1(dev, *port) == 0)
245 err = register_netdev(dev);
256 /* The Fujitsu datasheet suggests that the NIC be probed for by checking its
257 "signature", the default bit pattern after a reset. This *doesn't* work --
258 there is no way to reset the bus interface without a complete power-cycle!
260 It turns out that ATI came to the same conclusion I did: the only thing
261 that can be done is checking a few bits and then diving right into an
264 static int __init at1700_probe1(struct net_device *dev, int ioaddr)
266 char fmv_irqmap[4] = {3, 7, 10, 15};
267 char fmv_irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
268 char at1700_irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15};
269 unsigned int i, irq, is_fmv18x = 0, is_at1700 = 0;
270 int slot, ret = -ENODEV;
271 struct net_local *lp = netdev_priv(dev);
273 if (!request_region(ioaddr, AT1700_IO_EXTENT, DRV_NAME))
276 /* Resetting the chip doesn't reset the ISA interface, so don't bother.
277 That means we have to be careful with the register values we probe
281 printk("at1700 probe at %#x, eeprom is %4.4x %4.4x %4.4x ctrl %4.4x.\n",
282 ioaddr, read_eeprom(ioaddr, 4), read_eeprom(ioaddr, 5),
283 read_eeprom(ioaddr, 6), inw(ioaddr + EEPROM_Ctrl));
286 #ifdef CONFIG_MCA_LEGACY
287 /* rEnE (rene@bss.lu): got this from 3c509 driver source , adapted for AT1720 */
289 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch, heavily
290 modified by Chris Beauregard (cpbeaure@csclub.uwaterloo.ca)
291 to support standard MCA probing. */
293 /* redone for multi-card detection by ZP Gu (zpg@castle.net) */
294 /* now works as a module */
301 for (j = 0; at1720_mca_adapters[j].name != NULL; j ++) {
303 while (slot != MCA_NOTFOUND) {
305 slot = mca_find_unused_adapter( at1720_mca_adapters[j].id, slot );
306 if (slot == MCA_NOTFOUND) break;
308 /* if we get this far, an adapter has been detected and is
311 pos3 = mca_read_stored_pos( slot, 3 );
312 pos4 = mca_read_stored_pos( slot, 4 );
314 for (l_i = 0; l_i < 0x09; l_i++)
315 if (( pos3 & 0x07) == at1700_ioaddr_pattern[l_i])
317 ioaddr = at1700_mca_probe_list[l_i];
319 for (irq = 0; irq < 0x10; irq++)
320 if (((((pos4>>4) & 0x0f) | (pos3 & 0xf0)) & 0xff) == at1700_irq_pattern[irq])
323 /* probing for a card at a particular IO/IRQ */
324 if ((dev->irq && dev->irq != irq) ||
325 (dev->base_addr && dev->base_addr != ioaddr)) {
326 slot++; /* probing next slot */
333 mca_set_adapter_name( slot, at1720_mca_adapters[j].name );
334 mca_mark_as_used(slot);
339 /* if we get here, we didn't find an MCA adapter - try ISA */
343 /* We must check for the EEPROM-config boards first, else accessing
344 IOCONFIG0 will move the board! */
345 if (at1700_probe_list[inb(ioaddr + IOCONFIG1) & 0x07] == ioaddr
346 && read_eeprom(ioaddr, 4) == 0x0000
347 && (read_eeprom(ioaddr, 5) & 0xff00) == 0xF400)
349 else if (inb(ioaddr + SAPROM ) == 0x00
350 && inb(ioaddr + SAPROM + 1) == 0x00
351 && inb(ioaddr + SAPROM + 2) == 0x0e)
357 #ifdef CONFIG_MCA_LEGACY
361 /* Reset the internal state machines. */
362 outb(0, ioaddr + RESET);
365 irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
366 | (read_eeprom(ioaddr, 0)>>14)];
368 /* Check PnP mode for FMV-183/184/183A/184A. */
369 /* This PnP routine is very poor. IO and IRQ should be known. */
370 if (inb(ioaddr + CARDSTATUS1) & 0x20) {
372 for (i = 0; i < 8; i++) {
373 if (irq == fmv_irqmap_pnp[i])
380 if (fmv18x_probe_list[inb(ioaddr + IOCONFIG) & 0x07] != ioaddr)
382 irq = fmv_irqmap[(inb(ioaddr + IOCONFIG)>>6) & 0x03];
386 printk("%s: %s found at %#3x, IRQ %d, address ", dev->name,
387 is_at1700 ? "AT1700" : "FMV-18X", ioaddr, irq);
389 dev->base_addr = ioaddr;
393 for(i = 0; i < 3; i++) {
394 unsigned short eeprom_val = read_eeprom(ioaddr, 4+i);
395 printk("%04x", eeprom_val);
396 ((unsigned short *)dev->dev_addr)[i] = ntohs(eeprom_val);
399 for(i = 0; i < 6; i++) {
400 unsigned char val = inb(ioaddr + SAPROM + i);
402 dev->dev_addr[i] = val;
406 /* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
407 rather than 150 ohm shielded twisted pair compensation.
408 0x0000 == auto-sense the interface
409 0x0800 == use TP interface
410 0x1800 == use coax interface
413 const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"};
415 ushort setup_value = read_eeprom(ioaddr, 12);
416 dev->if_port = setup_value >> 8;
418 ushort setup_value = inb(ioaddr + CARDSTATUS);
419 switch (setup_value & 0x07) {
420 case 0x01: /* 10base5 */
421 case 0x02: /* 10base2 */
422 dev->if_port = 0x18; break;
423 case 0x04: /* 10baseT */
424 dev->if_port = 0x08; break;
425 default: /* auto-sense */
426 dev->if_port = 0x00; break;
429 printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
432 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
433 bus access, two 4K Tx queues, and disabled Tx and Rx. */
434 outb(0xda, ioaddr + CONFIG_0);
436 /* Set the station address in bank zero. */
437 outb(0x00, ioaddr + CONFIG_1);
438 for (i = 0; i < 6; i++)
439 outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
441 /* Switch to bank 1 and set the multicast table to accept none. */
442 outb(0x04, ioaddr + CONFIG_1);
443 for (i = 0; i < 8; i++)
444 outb(0x00, ioaddr + PORT_OFFSET(8 + i));
447 /* Switch to bank 2 */
448 /* Lock our I/O address, and set manual processing mode for 16 collisions. */
449 outb(0x08, ioaddr + CONFIG_1);
450 outb(dev->if_port, ioaddr + MODE13);
451 outb(0x00, ioaddr + COL16CNTL);
456 memset(lp, 0, sizeof(struct net_local));
458 dev->open = net_open;
459 dev->stop = net_close;
460 dev->hard_start_xmit = net_send_packet;
461 dev->get_stats = net_get_stats;
462 dev->set_multicast_list = &set_rx_mode;
463 dev->tx_timeout = net_tx_timeout;
464 dev->watchdog_timeo = TX_TIMEOUT;
466 spin_lock_init(&lp->lock);
468 lp->jumpered = is_fmv18x;
470 /* Snarf the interrupt vector now. */
471 ret = request_irq(irq, &net_interrupt, 0, DRV_NAME, dev);
473 printk (" AT1700 at %#3x is unusable due to a conflict on"
474 "IRQ %d.\n", ioaddr, irq);
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 lp->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. */
652 net_interrupt(int irq, void *dev_id, struct pt_regs *regs)
654 struct net_device *dev = dev_id;
655 struct net_local *lp;
660 printk ("at1700_interrupt(): irq %d for unknown device.\n", irq);
664 ioaddr = dev->base_addr;
665 lp = netdev_priv(dev);
667 spin_lock (&lp->lock);
669 status = inw(ioaddr + TX_STATUS);
670 outw(status, ioaddr + TX_STATUS);
673 printk("%s: Interrupt with status %04x.\n", dev->name, status);
674 if (lp->rx_started == 0 &&
675 (status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
677 We cannot execute net_rx more than once at the same time for
678 the same device. During executing net_rx, we possibly catch a
679 Tx interrupt. Thus we flag on rx_started, so that we prevent
680 the interrupt routine (net_interrupt) to dive into net_rx
684 outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
686 outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
689 if (status & 0x00ff) {
692 /* More than 16 collisions occurred */
694 printk("%s: 16 Collision occur during Txing.\n", dev->name);
695 /* Cancel sending a packet. */
696 outb(0x03, ioaddr + COL16CNTL);
697 lp->stats.collisions++;
700 lp->stats.tx_packets++;
701 /* The Tx queue has any packets and is not being
702 transferred a packet from the host, start
704 if (lp->tx_queue && lp->tx_queue_ready) {
705 outb(0x80 | lp->tx_queue, ioaddr + TX_START);
707 lp->tx_queue_len = 0;
708 dev->trans_start = jiffies;
709 netif_wake_queue (dev);
712 netif_wake_queue (dev);
717 spin_unlock (&lp->lock);
718 return IRQ_RETVAL(handled);
721 /* We have a good packet(s), get it/them out of the buffers. */
723 net_rx(struct net_device *dev)
725 struct net_local *lp = netdev_priv(dev);
726 int ioaddr = dev->base_addr;
729 while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
730 ushort status = inw(ioaddr + DATAPORT);
731 ushort pkt_len = inw(ioaddr + DATAPORT);
734 printk("%s: Rxing packet mode %02x status %04x.\n",
735 dev->name, inb(ioaddr + RX_MODE), status);
736 #ifndef final_version
738 outb(0x05, ioaddr + RX_CTRL);
743 if ((status & 0xF0) != 0x20) { /* There was an error. */
744 lp->stats.rx_errors++;
745 if (status & 0x08) lp->stats.rx_length_errors++;
746 if (status & 0x04) lp->stats.rx_frame_errors++;
747 if (status & 0x02) lp->stats.rx_crc_errors++;
748 if (status & 0x01) lp->stats.rx_over_errors++;
750 /* Malloc up new buffer. */
753 if (pkt_len > 1550) {
754 printk("%s: The AT1700 claimed a very large packet, size %d.\n",
756 /* Prime the FIFO and then flush the packet. */
757 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
758 outb(0x05, ioaddr + RX_CTRL);
759 lp->stats.rx_errors++;
762 skb = dev_alloc_skb(pkt_len+3);
764 printk("%s: Memory squeeze, dropping packet (len %d).\n",
766 /* Prime the FIFO and then flush the packet. */
767 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
768 outb(0x05, ioaddr + RX_CTRL);
769 lp->stats.rx_dropped++;
775 insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
776 skb->protocol=eth_type_trans(skb, dev);
778 dev->last_rx = jiffies;
779 lp->stats.rx_packets++;
780 lp->stats.rx_bytes += pkt_len;
782 if (--boguscount <= 0)
786 /* If any worth-while packets have been received, dev_rint()
787 has done a mark_bh(NET_BH) for us and will work on them
788 when we get to the bottom-half routine. */
791 for (i = 0; i < 20; i++) {
792 if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
794 inw(ioaddr + DATAPORT); /* dummy status read */
795 outb(0x05, ioaddr + RX_CTRL);
799 printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
800 dev->name, inb(ioaddr + RX_MODE), i);
805 /* The inverse routine to net_open(). */
806 static int net_close(struct net_device *dev)
808 struct net_local *lp = netdev_priv(dev);
809 int ioaddr = dev->base_addr;
811 netif_stop_queue(dev);
813 /* Set configuration register 0 to disable Tx and Rx. */
814 outb(0xda, ioaddr + CONFIG_0);
816 /* No statistic counters on the chip to update. */
818 /* Disable the IRQ on boards of fmv18x where it is feasible. */
820 outb(0x00, ioaddr + IOCONFIG1);
821 free_irq(dev->irq, dev);
824 /* Power-down the chip. Green, green, green! */
825 outb(0x00, ioaddr + CONFIG_1);
829 /* Get the current statistics.
830 This may be called with the card open or closed.
831 There are no on-chip counters, so this function is trivial.
833 static struct net_device_stats *
834 net_get_stats(struct net_device *dev)
836 struct net_local *lp = netdev_priv(dev);
841 Set the multicast/promiscuous mode for this adaptor.
845 set_rx_mode(struct net_device *dev)
847 int ioaddr = dev->base_addr;
848 struct net_local *lp = netdev_priv(dev);
849 unsigned char mc_filter[8]; /* Multicast hash filter */
853 if (dev->flags & IFF_PROMISC) {
854 /* Unconditionally log net taps. */
855 printk("%s: Promiscuous mode enabled.\n", dev->name);
856 memset(mc_filter, 0xff, sizeof(mc_filter));
857 outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
858 } else if (dev->mc_count > MC_FILTERBREAK
859 || (dev->flags & IFF_ALLMULTI)) {
860 /* Too many to filter perfectly -- accept all multicasts. */
861 memset(mc_filter, 0xff, sizeof(mc_filter));
862 outb(2, ioaddr + RX_MODE); /* Use normal mode. */
863 } else if (dev->mc_count == 0) {
864 memset(mc_filter, 0x00, sizeof(mc_filter));
865 outb(1, ioaddr + RX_MODE); /* Ignore almost all multicasts. */
867 struct dev_mc_list *mclist;
870 memset(mc_filter, 0, sizeof(mc_filter));
871 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
872 i++, mclist = mclist->next) {
874 ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 26;
875 mc_filter[bit >> 3] |= (1 << bit);
877 outb(0x02, ioaddr + RX_MODE); /* Use normal mode. */
880 spin_lock_irqsave (&lp->lock, flags);
881 if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
882 int saved_bank = inw(ioaddr + CONFIG_0);
883 /* Switch to bank 1 and set the multicast table. */
884 outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
885 for (i = 0; i < 8; i++)
886 outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
887 memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
888 outw(saved_bank, ioaddr + CONFIG_0);
890 spin_unlock_irqrestore (&lp->lock, flags);
895 static struct net_device *dev_at1700;
897 module_param(io, int, 0);
898 module_param(irq, int, 0);
899 module_param(net_debug, int, 0);
900 MODULE_PARM_DESC(io, "AT1700/FMV18X I/O base address");
901 MODULE_PARM_DESC(irq, "AT1700/FMV18X IRQ number");
902 MODULE_PARM_DESC(net_debug, "AT1700/FMV18X debug level (0-6)");
904 int __init init_module(void)
907 printk("at1700: You should not use auto-probing with insmod!\n");
908 dev_at1700 = at1700_probe(-1);
909 if (IS_ERR(dev_at1700))
910 return PTR_ERR(dev_at1700);
917 unregister_netdev(dev_at1700);
918 cleanup_card(dev_at1700);
919 free_netdev(dev_at1700);
922 MODULE_LICENSE("GPL");
927 * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"
928 * alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"