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/config.h>
39 #include <linux/errno.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/mca-legacy.h>
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/types.h>
46 #include <linux/fcntl.h>
47 #include <linux/interrupt.h>
48 #include <linux/ioport.h>
50 #include <linux/skbuff.h>
51 #include <linux/slab.h>
52 #include <linux/string.h>
53 #include <linux/init.h>
54 #include <linux/crc32.h>
55 #include <linux/bitops.h>
57 #include <asm/system.h>
61 static char version[] __initdata =
62 "at1700.c:v1.15 4/7/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
64 #define DRV_NAME "at1700"
66 /* Tunable parameters. */
68 /* When to switch from the 64-entry multicast filter to Rx-all-multicast. */
69 #define MC_FILTERBREAK 64
71 /* These unusual address orders are used to verify the CONFIG register. */
73 static int fmv18x_probe_list[] __initdata = {
74 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x300, 0x340, 0
81 static unsigned at1700_probe_list[] __initdata = {
82 0x260, 0x280, 0x2a0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
88 #ifdef CONFIG_MCA_LEGACY
89 static int at1700_ioaddr_pattern[] __initdata = {
90 0x00, 0x04, 0x01, 0x05, 0x02, 0x06, 0x03, 0x07
93 static int at1700_mca_probe_list[] __initdata = {
94 0x400, 0x1400, 0x2400, 0x3400, 0x4400, 0x5400, 0x6400, 0x7400, 0
97 static int at1700_irq_pattern[] __initdata = {
98 0x00, 0x00, 0x00, 0x30, 0x70, 0xb0, 0x00, 0x00,
99 0x00, 0xf0, 0x34, 0x74, 0xb4, 0x00, 0x00, 0xf4, 0x00
103 /* use 0 for production, 1 for verification, >2 for debug */
107 static unsigned int net_debug = NET_DEBUG;
109 typedef unsigned char uchar;
111 /* Information that need to be kept for each board. */
113 struct net_device_stats stats;
115 unsigned char mc_filter[8];
116 uint jumpered:1; /* Set iff the board has jumper config. */
117 uint tx_started:1; /* Packets are on the Tx queue. */
118 uint tx_queue_ready:1; /* Tx queue is ready to be sent. */
119 uint rx_started:1; /* Packets are Rxing. */
120 uchar tx_queue; /* Number of packet on the Tx queue. */
121 char mca_slot; /* -1 means ISA */
122 ushort tx_queue_len; /* Current length of the Tx queue. */
126 /* Offsets from the base address. */
130 #define TX_INTR 2 /* Bit-mapped interrupt enable registers. */
134 #define CONFIG_0 6 /* Misc. configuration settings. */
136 /* Run-time register bank 2 definitions. */
137 #define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */
139 #define COL16CNTL 11 /* Controll Reg for 16 collisions */
142 /* Configuration registers only on the '865A/B chips. */
143 #define EEPROM_Ctrl 16
144 #define EEPROM_Data 17
145 #define CARDSTATUS 16 /* FMV-18x Card Status */
146 #define CARDSTATUS1 17 /* FMV-18x Card Status */
147 #define IOCONFIG 18 /* Either read the jumper, or move the I/O. */
149 #define SAPROM 20 /* The station address PROM, if no EEPROM. */
151 #define RESET 31 /* Write to reset some parts of the chip. */
152 #define AT1700_IO_EXTENT 32
153 #define PORT_OFFSET(o) (o)
156 #define TX_TIMEOUT 10
159 /* Index to functions, as function prototypes. */
161 static int at1700_probe1(struct net_device *dev, int ioaddr);
162 static int read_eeprom(long ioaddr, int location);
163 static int net_open(struct net_device *dev);
164 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
165 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
166 static void net_rx(struct net_device *dev);
167 static int net_close(struct net_device *dev);
168 static struct net_device_stats *net_get_stats(struct net_device *dev);
169 static void set_rx_mode(struct net_device *dev);
170 static void net_tx_timeout (struct net_device *dev);
173 #ifdef CONFIG_MCA_LEGACY
174 struct at1720_mca_adapters_struct {
178 /* rEnE : maybe there are others I don't know off... */
180 static struct at1720_mca_adapters_struct at1720_mca_adapters[] __initdata = {
181 { "Allied Telesys AT1720AT", 0x6410 },
182 { "Allied Telesys AT1720BT", 0x6413 },
183 { "Allied Telesys AT1720T", 0x6416 },
188 /* Check for a network adaptor of this type, and return '0' iff one exists.
189 If dev->base_addr == 0, probe all likely locations.
190 If dev->base_addr == 1, always return failure.
191 If dev->base_addr == 2, allocate space for the device and return success
192 (detachable devices only).
195 static int io = 0x260;
199 static void cleanup_card(struct net_device *dev)
201 #ifdef CONFIG_MCA_LEGACY
202 struct net_local *lp = netdev_priv(dev);
203 if (lp->mca_slot >= 0)
204 mca_mark_as_unused(lp->mca_slot);
206 free_irq(dev->irq, NULL);
207 release_region(dev->base_addr, AT1700_IO_EXTENT);
210 struct net_device * __init at1700_probe(int unit)
212 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
217 return ERR_PTR(-ENODEV);
220 sprintf(dev->name, "eth%d", unit);
221 netdev_boot_setup_check(dev);
229 SET_MODULE_OWNER(dev);
231 if (io > 0x1ff) { /* Check a single specified location. */
232 err = at1700_probe1(dev, io);
233 } else if (io != 0) { /* Don't probe at all. */
236 for (port = at1700_probe_list; *port; port++) {
237 if (at1700_probe1(dev, *port) == 0)
246 err = register_netdev(dev);
257 /* The Fujitsu datasheet suggests that the NIC be probed for by checking its
258 "signature", the default bit pattern after a reset. This *doesn't* work --
259 there is no way to reset the bus interface without a complete power-cycle!
261 It turns out that ATI came to the same conclusion I did: the only thing
262 that can be done is checking a few bits and then diving right into an
265 static int __init at1700_probe1(struct net_device *dev, int ioaddr)
267 char fmv_irqmap[4] = {3, 7, 10, 15};
268 char fmv_irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
269 char at1700_irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15};
270 unsigned int i, irq, is_fmv18x = 0, is_at1700 = 0;
271 int slot, ret = -ENODEV;
272 struct net_local *lp = netdev_priv(dev);
274 if (!request_region(ioaddr, AT1700_IO_EXTENT, DRV_NAME))
277 /* Resetting the chip doesn't reset the ISA interface, so don't bother.
278 That means we have to be careful with the register values we probe
282 printk("at1700 probe at %#x, eeprom is %4.4x %4.4x %4.4x ctrl %4.4x.\n",
283 ioaddr, read_eeprom(ioaddr, 4), read_eeprom(ioaddr, 5),
284 read_eeprom(ioaddr, 6), inw(ioaddr + EEPROM_Ctrl));
287 #ifdef CONFIG_MCA_LEGACY
288 /* rEnE (rene@bss.lu): got this from 3c509 driver source , adapted for AT1720 */
290 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch, heavily
291 modified by Chris Beauregard (cpbeaure@csclub.uwaterloo.ca)
292 to support standard MCA probing. */
294 /* redone for multi-card detection by ZP Gu (zpg@castle.net) */
295 /* now works as a module */
302 for (j = 0; at1720_mca_adapters[j].name != NULL; j ++) {
304 while (slot != MCA_NOTFOUND) {
306 slot = mca_find_unused_adapter( at1720_mca_adapters[j].id, slot );
307 if (slot == MCA_NOTFOUND) break;
309 /* if we get this far, an adapter has been detected and is
312 pos3 = mca_read_stored_pos( slot, 3 );
313 pos4 = mca_read_stored_pos( slot, 4 );
315 for (l_i = 0; l_i < 0x09; l_i++)
316 if (( pos3 & 0x07) == at1700_ioaddr_pattern[l_i])
318 ioaddr = at1700_mca_probe_list[l_i];
320 for (irq = 0; irq < 0x10; irq++)
321 if (((((pos4>>4) & 0x0f) | (pos3 & 0xf0)) & 0xff) == at1700_irq_pattern[irq])
324 /* probing for a card at a particular IO/IRQ */
325 if ((dev->irq && dev->irq != irq) ||
326 (dev->base_addr && dev->base_addr != ioaddr)) {
327 slot++; /* probing next slot */
334 mca_set_adapter_name( slot, at1720_mca_adapters[j].name );
335 mca_mark_as_used(slot);
340 /* if we get here, we didn't find an MCA adapter - try ISA */
344 /* We must check for the EEPROM-config boards first, else accessing
345 IOCONFIG0 will move the board! */
346 if (at1700_probe_list[inb(ioaddr + IOCONFIG1) & 0x07] == ioaddr
347 && read_eeprom(ioaddr, 4) == 0x0000
348 && (read_eeprom(ioaddr, 5) & 0xff00) == 0xF400)
350 else if (inb(ioaddr + SAPROM ) == 0x00
351 && inb(ioaddr + SAPROM + 1) == 0x00
352 && inb(ioaddr + SAPROM + 2) == 0x0e)
358 #ifdef CONFIG_MCA_LEGACY
362 /* Reset the internal state machines. */
363 outb(0, ioaddr + RESET);
366 irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
367 | (read_eeprom(ioaddr, 0)>>14)];
369 /* Check PnP mode for FMV-183/184/183A/184A. */
370 /* This PnP routine is very poor. IO and IRQ should be known. */
371 if (inb(ioaddr + CARDSTATUS1) & 0x20) {
373 for (i = 0; i < 8; i++) {
374 if (irq == fmv_irqmap_pnp[i])
381 if (fmv18x_probe_list[inb(ioaddr + IOCONFIG) & 0x07] != ioaddr)
383 irq = fmv_irqmap[(inb(ioaddr + IOCONFIG)>>6) & 0x03];
387 printk("%s: %s found at %#3x, IRQ %d, address ", dev->name,
388 is_at1700 ? "AT1700" : "FMV-18X", ioaddr, irq);
390 dev->base_addr = ioaddr;
394 for(i = 0; i < 3; i++) {
395 unsigned short eeprom_val = read_eeprom(ioaddr, 4+i);
396 printk("%04x", eeprom_val);
397 ((unsigned short *)dev->dev_addr)[i] = ntohs(eeprom_val);
400 for(i = 0; i < 6; i++) {
401 unsigned char val = inb(ioaddr + SAPROM + i);
403 dev->dev_addr[i] = val;
407 /* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
408 rather than 150 ohm shielded twisted pair compensation.
409 0x0000 == auto-sense the interface
410 0x0800 == use TP interface
411 0x1800 == use coax interface
414 const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"};
416 ushort setup_value = read_eeprom(ioaddr, 12);
417 dev->if_port = setup_value >> 8;
419 ushort setup_value = inb(ioaddr + CARDSTATUS);
420 switch (setup_value & 0x07) {
421 case 0x01: /* 10base5 */
422 case 0x02: /* 10base2 */
423 dev->if_port = 0x18; break;
424 case 0x04: /* 10baseT */
425 dev->if_port = 0x08; break;
426 default: /* auto-sense */
427 dev->if_port = 0x00; break;
430 printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
433 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
434 bus access, two 4K Tx queues, and disabled Tx and Rx. */
435 outb(0xda, ioaddr + CONFIG_0);
437 /* Set the station address in bank zero. */
438 outb(0x00, ioaddr + CONFIG_1);
439 for (i = 0; i < 6; i++)
440 outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
442 /* Switch to bank 1 and set the multicast table to accept none. */
443 outb(0x04, ioaddr + CONFIG_1);
444 for (i = 0; i < 8; i++)
445 outb(0x00, ioaddr + PORT_OFFSET(8 + i));
448 /* Switch to bank 2 */
449 /* Lock our I/O address, and set manual processing mode for 16 collisions. */
450 outb(0x08, ioaddr + CONFIG_1);
451 outb(dev->if_port, ioaddr + MODE13);
452 outb(0x00, ioaddr + COL16CNTL);
457 memset(lp, 0, sizeof(struct net_local));
459 dev->open = net_open;
460 dev->stop = net_close;
461 dev->hard_start_xmit = net_send_packet;
462 dev->get_stats = net_get_stats;
463 dev->set_multicast_list = &set_rx_mode;
464 dev->tx_timeout = net_tx_timeout;
465 dev->watchdog_timeo = TX_TIMEOUT;
467 spin_lock_init(&lp->lock);
469 lp->jumpered = is_fmv18x;
471 /* Snarf the interrupt vector now. */
472 ret = request_irq(irq, &net_interrupt, 0, DRV_NAME, dev);
474 printk (" AT1700 at %#3x is unusable due to a conflict on"
475 "IRQ %d.\n", ioaddr, irq);
482 #ifdef CONFIG_MCA_LEGACY
484 mca_mark_as_unused(slot);
487 release_region(ioaddr, AT1700_IO_EXTENT);
492 /* EEPROM_Ctrl bits. */
493 #define EE_SHIFT_CLK 0x40 /* EEPROM shift clock, in reg. 16. */
494 #define EE_CS 0x20 /* EEPROM chip select, in reg. 16. */
495 #define EE_DATA_WRITE 0x80 /* EEPROM chip data in, in reg. 17. */
496 #define EE_DATA_READ 0x80 /* EEPROM chip data out, in reg. 17. */
498 /* The EEPROM commands include the alway-set leading bit. */
499 #define EE_WRITE_CMD (5 << 6)
500 #define EE_READ_CMD (6 << 6)
501 #define EE_ERASE_CMD (7 << 6)
503 static int __init read_eeprom(long ioaddr, int location)
506 unsigned short retval = 0;
507 long ee_addr = ioaddr + EEPROM_Ctrl;
508 long ee_daddr = ioaddr + EEPROM_Data;
509 int read_cmd = location | EE_READ_CMD;
511 /* Shift the read command bits out. */
512 for (i = 9; i >= 0; i--) {
513 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
514 outb(EE_CS, ee_addr);
515 outb(dataval, ee_daddr);
516 outb(EE_CS | EE_SHIFT_CLK, ee_addr); /* EEPROM clock tick. */
518 outb(EE_DATA_WRITE, ee_daddr);
519 for (i = 16; i > 0; i--) {
520 outb(EE_CS, ee_addr);
521 outb(EE_CS | EE_SHIFT_CLK, ee_addr);
522 retval = (retval << 1) | ((inb(ee_daddr) & EE_DATA_READ) ? 1 : 0);
525 /* Terminate the EEPROM access. */
526 outb(EE_CS, ee_addr);
527 outb(EE_SHIFT_CLK, ee_addr);
534 static int net_open(struct net_device *dev)
536 struct net_local *lp = netdev_priv(dev);
537 int ioaddr = dev->base_addr;
539 /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
540 bus access, and two 4K Tx queues. */
541 outb(0x5a, ioaddr + CONFIG_0);
543 /* Powerup, switch to register bank 2, and enable the Rx and Tx. */
544 outb(0xe8, ioaddr + CONFIG_1);
547 lp->tx_queue_ready = 1;
550 lp->tx_queue_len = 0;
552 /* Turn on hardware Tx and Rx interrupts. */
553 outb(0x82, ioaddr + TX_INTR);
554 outb(0x81, ioaddr + RX_INTR);
556 /* Enable the IRQ on boards of fmv18x it is feasible. */
558 outb(0x80, ioaddr + IOCONFIG1);
561 netif_start_queue(dev);
565 static void net_tx_timeout (struct net_device *dev)
567 struct net_local *lp = netdev_priv(dev);
568 int ioaddr = dev->base_addr;
570 printk ("%s: transmit timed out with status %04x, %s?\n", dev->name,
571 inw (ioaddr + STATUS), inb (ioaddr + TX_STATUS) & 0x80
572 ? "IRQ conflict" : "network cable problem");
573 printk ("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
574 dev->name, inw(ioaddr + TX_STATUS), inw(ioaddr + TX_INTR), inw(ioaddr + TX_MODE),
575 inw(ioaddr + CONFIG_0), inw(ioaddr + DATAPORT), inw(ioaddr + TX_START),
576 inw(ioaddr + MODE13 - 1), inw(ioaddr + RX_CTRL));
577 lp->stats.tx_errors++;
578 /* ToDo: We should try to restart the adaptor... */
579 outw(0xffff, ioaddr + MODE24);
580 outw (0xffff, ioaddr + TX_STATUS);
581 outb (0x5a, ioaddr + CONFIG_0);
582 outb (0xe8, ioaddr + CONFIG_1);
583 outw (0x8182, ioaddr + TX_INTR);
584 outb (0x00, ioaddr + TX_START);
585 outb (0x03, ioaddr + COL16CNTL);
587 dev->trans_start = jiffies;
590 lp->tx_queue_ready = 1;
593 lp->tx_queue_len = 0;
595 netif_wake_queue(dev);
599 static int net_send_packet (struct sk_buff *skb, struct net_device *dev)
601 struct net_local *lp = netdev_priv(dev);
602 int ioaddr = dev->base_addr;
603 short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
604 short len = skb->len;
605 unsigned char *buf = skb->data;
606 static u8 pad[ETH_ZLEN];
608 netif_stop_queue (dev);
610 /* We may not start transmitting unless we finish transferring
611 a packet into the Tx queue. During executing the following
612 codes we possibly catch a Tx interrupt. Thus we flag off
613 tx_queue_ready, so that we prevent the interrupt routine
614 (net_interrupt) to start transmitting. */
615 lp->tx_queue_ready = 0;
617 outw (length, ioaddr + DATAPORT);
619 outsw (ioaddr + DATAPORT, buf, len >> 1);
620 /* Check for dribble byte */
622 outw(skb->data[skb->len-1], ioaddr + DATAPORT);
625 /* Check for packet padding */
626 if (length != skb->len)
627 outsw(ioaddr + DATAPORT, pad, (length - len + 1) >> 1);
630 lp->tx_queue_len += length + 2;
632 lp->tx_queue_ready = 1;
634 if (lp->tx_started == 0) {
635 /* If the Tx is idle, always trigger a transmit. */
636 outb (0x80 | lp->tx_queue, ioaddr + TX_START);
638 lp->tx_queue_len = 0;
639 dev->trans_start = jiffies;
641 netif_start_queue (dev);
642 } else if (lp->tx_queue_len < 4096 - 1502)
643 /* Yes, there is room for one more packet. */
644 netif_start_queue (dev);
650 /* The typical workload of the driver:
651 Handle the network interface interrupts. */
653 net_interrupt(int irq, void *dev_id, struct pt_regs *regs)
655 struct net_device *dev = dev_id;
656 struct net_local *lp;
661 printk ("at1700_interrupt(): irq %d for unknown device.\n", irq);
665 ioaddr = dev->base_addr;
666 lp = netdev_priv(dev);
668 spin_lock (&lp->lock);
670 status = inw(ioaddr + TX_STATUS);
671 outw(status, ioaddr + TX_STATUS);
674 printk("%s: Interrupt with status %04x.\n", dev->name, status);
675 if (lp->rx_started == 0 &&
676 (status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
678 We cannot execute net_rx more than once at the same time for
679 the same device. During executing net_rx, we possibly catch a
680 Tx interrupt. Thus we flag on rx_started, so that we prevent
681 the interrupt routine (net_interrupt) to dive into net_rx
685 outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
687 outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
690 if (status & 0x00ff) {
693 /* More than 16 collisions occurred */
695 printk("%s: 16 Collision occur during Txing.\n", dev->name);
696 /* Cancel sending a packet. */
697 outb(0x03, ioaddr + COL16CNTL);
698 lp->stats.collisions++;
701 lp->stats.tx_packets++;
702 /* The Tx queue has any packets and is not being
703 transferred a packet from the host, start
705 if (lp->tx_queue && lp->tx_queue_ready) {
706 outb(0x80 | lp->tx_queue, ioaddr + TX_START);
708 lp->tx_queue_len = 0;
709 dev->trans_start = jiffies;
710 netif_wake_queue (dev);
713 netif_wake_queue (dev);
718 spin_unlock (&lp->lock);
719 return IRQ_RETVAL(handled);
722 /* We have a good packet(s), get it/them out of the buffers. */
724 net_rx(struct net_device *dev)
726 struct net_local *lp = netdev_priv(dev);
727 int ioaddr = dev->base_addr;
730 while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
731 ushort status = inw(ioaddr + DATAPORT);
732 ushort pkt_len = inw(ioaddr + DATAPORT);
735 printk("%s: Rxing packet mode %02x status %04x.\n",
736 dev->name, inb(ioaddr + RX_MODE), status);
737 #ifndef final_version
739 outb(0x05, ioaddr + RX_CTRL);
744 if ((status & 0xF0) != 0x20) { /* There was an error. */
745 lp->stats.rx_errors++;
746 if (status & 0x08) lp->stats.rx_length_errors++;
747 if (status & 0x04) lp->stats.rx_frame_errors++;
748 if (status & 0x02) lp->stats.rx_crc_errors++;
749 if (status & 0x01) lp->stats.rx_over_errors++;
751 /* Malloc up new buffer. */
754 if (pkt_len > 1550) {
755 printk("%s: The AT1700 claimed a very large packet, size %d.\n",
757 /* Prime the FIFO and then flush the packet. */
758 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
759 outb(0x05, ioaddr + RX_CTRL);
760 lp->stats.rx_errors++;
763 skb = dev_alloc_skb(pkt_len+3);
765 printk("%s: Memory squeeze, dropping packet (len %d).\n",
767 /* Prime the FIFO and then flush the packet. */
768 inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
769 outb(0x05, ioaddr + RX_CTRL);
770 lp->stats.rx_dropped++;
776 insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
777 skb->protocol=eth_type_trans(skb, dev);
779 dev->last_rx = jiffies;
780 lp->stats.rx_packets++;
781 lp->stats.rx_bytes += pkt_len;
783 if (--boguscount <= 0)
787 /* If any worth-while packets have been received, dev_rint()
788 has done a mark_bh(NET_BH) for us and will work on them
789 when we get to the bottom-half routine. */
792 for (i = 0; i < 20; i++) {
793 if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
795 inw(ioaddr + DATAPORT); /* dummy status read */
796 outb(0x05, ioaddr + RX_CTRL);
800 printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
801 dev->name, inb(ioaddr + RX_MODE), i);
806 /* The inverse routine to net_open(). */
807 static int net_close(struct net_device *dev)
809 struct net_local *lp = netdev_priv(dev);
810 int ioaddr = dev->base_addr;
812 netif_stop_queue(dev);
814 /* Set configuration register 0 to disable Tx and Rx. */
815 outb(0xda, ioaddr + CONFIG_0);
817 /* No statistic counters on the chip to update. */
819 /* Disable the IRQ on boards of fmv18x where it is feasible. */
821 outb(0x00, ioaddr + IOCONFIG1);
822 free_irq(dev->irq, dev);
825 /* Power-down the chip. Green, green, green! */
826 outb(0x00, ioaddr + CONFIG_1);
830 /* Get the current statistics.
831 This may be called with the card open or closed.
832 There are no on-chip counters, so this function is trivial.
834 static struct net_device_stats *
835 net_get_stats(struct net_device *dev)
837 struct net_local *lp = netdev_priv(dev);
842 Set the multicast/promiscuous mode for this adaptor.
846 set_rx_mode(struct net_device *dev)
848 int ioaddr = dev->base_addr;
849 struct net_local *lp = netdev_priv(dev);
850 unsigned char mc_filter[8]; /* Multicast hash filter */
854 if (dev->flags & IFF_PROMISC) {
855 /* Unconditionally log net taps. */
856 printk("%s: Promiscuous mode enabled.\n", dev->name);
857 memset(mc_filter, 0xff, sizeof(mc_filter));
858 outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
859 } else if (dev->mc_count > MC_FILTERBREAK
860 || (dev->flags & IFF_ALLMULTI)) {
861 /* Too many to filter perfectly -- accept all multicasts. */
862 memset(mc_filter, 0xff, sizeof(mc_filter));
863 outb(2, ioaddr + RX_MODE); /* Use normal mode. */
864 } else if (dev->mc_count == 0) {
865 memset(mc_filter, 0x00, sizeof(mc_filter));
866 outb(1, ioaddr + RX_MODE); /* Ignore almost all multicasts. */
868 struct dev_mc_list *mclist;
871 memset(mc_filter, 0, sizeof(mc_filter));
872 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
873 i++, mclist = mclist->next) {
875 ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 26;
876 mc_filter[bit >> 3] |= (1 << bit);
878 outb(0x02, ioaddr + RX_MODE); /* Use normal mode. */
881 spin_lock_irqsave (&lp->lock, flags);
882 if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
883 int saved_bank = inw(ioaddr + CONFIG_0);
884 /* Switch to bank 1 and set the multicast table. */
885 outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
886 for (i = 0; i < 8; i++)
887 outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
888 memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
889 outw(saved_bank, ioaddr + CONFIG_0);
891 spin_unlock_irqrestore (&lp->lock, flags);
896 static struct net_device *dev_at1700;
898 module_param(io, int, 0);
899 module_param(irq, int, 0);
900 module_param(net_debug, int, 0);
901 MODULE_PARM_DESC(io, "AT1700/FMV18X I/O base address");
902 MODULE_PARM_DESC(irq, "AT1700/FMV18X IRQ number");
903 MODULE_PARM_DESC(net_debug, "AT1700/FMV18X debug level (0-6)");
905 int init_module(void)
908 printk("at1700: You should not use auto-probing with insmod!\n");
909 dev_at1700 = at1700_probe(-1);
910 if (IS_ERR(dev_at1700))
911 return PTR_ERR(dev_at1700);
918 unregister_netdev(dev_at1700);
919 cleanup_card(dev_at1700);
920 free_netdev(dev_at1700);
923 MODULE_LICENSE("GPL");
928 * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"
929 * alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"