1 /* cops.c: LocalTalk driver for Linux.
4 * - Jay Schulist <jschlst@samba.org>
6 * With more than a little help from;
7 * - Alan Cox <Alan.Cox@linux.org>
10 * - skeleton.c: A network driver outline for linux.
11 * Written 1993-94 by Donald Becker.
12 * - ltpc.c: A driver for the LocalTalk PC card.
13 * Written by Bradford W. Johnson.
15 * Copyright 1993 United States Government as represented by the
16 * Director, National Security Agency.
18 * This software may be used and distributed according to the terms
19 * of the GNU General Public License, incorporated herein by reference.
22 * 19970608 Alan Cox Allowed dual card type support
23 * Can set board type in insmod
24 * Hooks for cops_setup routine
25 * (not yet implemented).
26 * 19971101 Jay Schulist Fixes for multiple lt* devices.
27 * 19980607 Steven Hirsch Fixed the badly broken support
28 * for Tangent type cards. Only
29 * tested on Daystar LT200. Some
30 * cleanup of formatting and program
31 * logic. Added emacs 'local-vars'
32 * setup for Jay's brace style.
33 * 20000211 Alan Cox Cleaned up for softnet
36 static const char *version =
37 "cops.c:v0.04 6/7/98 Jay Schulist <jschlst@samba.org>\n";
40 * COPS Localtalk SDK. This provides almost all of the information
45 * insmod/modprobe configurable stuff.
46 * - IO Port, choose one your card supports or 0 if you dare.
47 * - IRQ, also choose one your card supports or nothing and let
48 * the driver figure it out.
51 #include <linux/module.h>
52 #include <linux/kernel.h>
53 #include <linux/types.h>
54 #include <linux/fcntl.h>
55 #include <linux/interrupt.h>
56 #include <linux/ptrace.h>
57 #include <linux/ioport.h>
59 #include <linux/slab.h>
60 #include <linux/string.h>
61 #include <linux/errno.h>
62 #include <linux/init.h>
63 #include <linux/netdevice.h>
64 #include <linux/etherdevice.h>
65 #include <linux/skbuff.h>
66 #include <linux/if_arp.h>
67 #include <linux/if_ltalk.h>
68 #include <linux/delay.h> /* For udelay() */
69 #include <linux/atalk.h>
70 #include <linux/spinlock.h>
71 #include <linux/bitops.h>
73 #include <asm/system.h>
77 #include "cops.h" /* Our Stuff */
78 #include "cops_ltdrv.h" /* Firmware code for Tangent type cards. */
79 #include "cops_ffdrv.h" /* Firmware code for Dayna type cards. */
82 * The name of the card. Is used for messages and in the requests for
83 * io regions, irqs and dma channels
86 static const char *cardname = "cops";
88 #ifdef CONFIG_COPS_DAYNA
89 static int board_type = DAYNA; /* Module exported */
91 static int board_type = TANGENT;
94 static int io = 0x240; /* Default IO for Dayna */
95 static int irq = 5; /* Default IRQ */
98 * COPS Autoprobe information.
99 * Right now if port address is right but IRQ is not 5 this will
100 * return a 5 no matter what since we will still get a status response.
101 * Need one more additional check to narrow down after we have gotten
102 * the ioaddr. But since only other possible IRQs is 3 and 4 so no real
103 * hurry on this. I *STRONGLY* recommend using IRQ 5 for your card with
106 * This driver has 2 modes and they are: Dayna mode and Tangent mode.
107 * Each mode corresponds with the type of card. It has been found
108 * that there are 2 main types of cards and all other cards are
109 * the same and just have different names or only have minor differences
110 * such as more IO ports. As this driver is tested it will
111 * become more clear on exactly what cards are supported. The driver
112 * defaults to using Dayna mode. To change the drivers mode, simply
113 * select Dayna or Tangent mode when configuring the kernel.
115 * This driver should support:
116 * TANGENT driver mode:
117 * Tangent ATB-II, Novell NL-1000, Daystar Digital LT-200,
120 * Dayna DL2000/DaynaTalk PC (Half Length), COPS LT-95,
121 * Farallon PhoneNET PC III, Farallon PhoneNET PC II
122 * Other cards possibly supported mode unkown though:
123 * Dayna DL2000 (Full length), COPS LT/M (Micro-Channel)
125 * Cards NOT supported by this driver but supported by the ltpc.c
126 * driver written by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
127 * Farallon PhoneNET PC
128 * Original Apple LocalTalk PC card
132 * The Daystar Digital LT200 boards do not support interrupt-driven
133 * IO. You must specify 'irq=0xff' as a module parameter to invoke
134 * polled mode. I also believe that the port probing logic is quite
135 * dangerous at best and certainly hopeless for a polled card. Best to
136 * specify both. - Steve H.
141 * Zero terminated list of IO ports to probe.
144 static unsigned int ports[] = {
145 0x240, 0x340, 0x200, 0x210, 0x220, 0x230, 0x260,
146 0x2A0, 0x300, 0x310, 0x320, 0x330, 0x350, 0x360,
151 * Zero terminated list of IRQ ports to probe.
154 static int cops_irqlist[] = {
158 static struct timer_list cops_timer;
160 /* use 0 for production, 1 for verification, 2 for debug, 3 for verbose debug */
164 static unsigned int cops_debug = COPS_DEBUG;
166 /* The number of low I/O ports used by the card. */
167 #define COPS_IO_EXTENT 8
169 /* Information that needs to be kept for each board. */
173 struct net_device_stats stats;
174 int board; /* Holds what board type is. */
175 int nodeid; /* Set to 1 once have nodeid. */
176 unsigned char node_acquire; /* Node ID when acquired. */
177 struct atalk_addr node_addr; /* Full node address */
178 spinlock_t lock; /* RX/TX lock */
181 /* Index to functions, as function prototypes. */
182 static int cops_probe1 (struct net_device *dev, int ioaddr);
183 static int cops_irq (int ioaddr, int board);
185 static int cops_open (struct net_device *dev);
186 static int cops_jumpstart (struct net_device *dev);
187 static void cops_reset (struct net_device *dev, int sleep);
188 static void cops_load (struct net_device *dev);
189 static int cops_nodeid (struct net_device *dev, int nodeid);
191 static irqreturn_t cops_interrupt (int irq, void *dev_id);
192 static void cops_poll (unsigned long ltdev);
193 static void cops_timeout(struct net_device *dev);
194 static void cops_rx (struct net_device *dev);
195 static int cops_send_packet (struct sk_buff *skb, struct net_device *dev);
196 static void set_multicast_list (struct net_device *dev);
197 static int cops_hard_header (struct sk_buff *skb, struct net_device *dev,
198 unsigned short type, void *daddr, void *saddr,
201 static int cops_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
202 static int cops_close (struct net_device *dev);
203 static struct net_device_stats *cops_get_stats (struct net_device *dev);
205 static void cleanup_card(struct net_device *dev)
208 free_irq(dev->irq, dev);
209 release_region(dev->base_addr, COPS_IO_EXTENT);
213 * Check for a network adaptor of this type, and return '0' iff one exists.
214 * If dev->base_addr == 0, probe all likely locations.
215 * If dev->base_addr in [1..0x1ff], always return failure.
216 * otherwise go with what we pass in.
218 struct net_device * __init cops_probe(int unit)
220 struct net_device *dev;
225 dev = alloc_ltalkdev(sizeof(struct cops_local));
227 return ERR_PTR(-ENOMEM);
230 sprintf(dev->name, "lt%d", unit);
231 netdev_boot_setup_check(dev);
233 base_addr = dev->base_addr;
235 base_addr = dev->base_addr = io;
238 SET_MODULE_OWNER(dev);
240 if (base_addr > 0x1ff) { /* Check a single specified location. */
241 err = cops_probe1(dev, base_addr);
242 } else if (base_addr != 0) { /* Don't probe at all. */
245 /* FIXME Does this really work for cards which generate irq?
246 * It's definitely N.G. for polled Tangent. sh
247 * Dayna cards don't autoprobe well at all, but if your card is
248 * at IRQ 5 & IO 0x240 we find it every time. ;) JS
250 for (port = ports; *port && cops_probe1(dev, *port) < 0; port++)
257 err = register_netdev(dev);
269 * This is the real probe routine. Linux has a history of friendly device
270 * probes on the ISA bus. A good device probes avoids doing writes, and
271 * verifies that the correct device exists and functions.
273 static int __init cops_probe1(struct net_device *dev, int ioaddr)
275 struct cops_local *lp;
276 static unsigned version_printed;
277 int board = board_type;
280 if(cops_debug && version_printed++ == 0)
281 printk("%s", version);
283 /* Grab the region so no one else tries to probe our ioports. */
284 if (!request_region(ioaddr, COPS_IO_EXTENT, dev->name))
288 * Since this board has jumpered interrupts, allocate the interrupt
289 * vector now. There is no point in waiting since no other device
290 * can use the interrupt, and this marks the irq as busy. Jumpered
291 * interrupts are typically not reported by the boards, and we must
292 * used AutoIRQ to find them.
298 /* COPS AutoIRQ routine */
299 dev->irq = cops_irq(ioaddr, board);
302 /* No IRQ found on this port, fallthrough */
307 /* Fixup for users that don't know that IRQ 2 is really
308 * IRQ 9, or don't know which one to set.
314 /* Polled operation requested. Although irq of zero passed as
315 * a parameter tells the init routines to probe, we'll
316 * overload it to denote polled operation at runtime.
326 /* Reserve any actual interrupt. */
328 retval = request_irq(dev->irq, &cops_interrupt, 0, dev->name, dev);
333 dev->base_addr = ioaddr;
335 lp = netdev_priv(dev);
336 memset(lp, 0, sizeof(struct cops_local));
337 spin_lock_init(&lp->lock);
339 /* Copy local board variable to lp struct. */
342 dev->hard_start_xmit = cops_send_packet;
343 dev->tx_timeout = cops_timeout;
344 dev->watchdog_timeo = HZ * 2;
345 dev->hard_header = cops_hard_header;
346 dev->get_stats = cops_get_stats;
347 dev->open = cops_open;
348 dev->stop = cops_close;
349 dev->do_ioctl = cops_ioctl;
350 dev->set_multicast_list = set_multicast_list;
353 /* Tell the user where the card is and what mode we're in. */
355 printk("%s: %s at %#3x, using IRQ %d, in Dayna mode.\n",
356 dev->name, cardname, ioaddr, dev->irq);
359 printk("%s: %s at %#3x, IRQ %d, in Tangent mode\n",
360 dev->name, cardname, ioaddr, dev->irq);
362 printk("%s: %s at %#3x, using polled IO, in Tangent mode.\n",
363 dev->name, cardname, ioaddr);
369 release_region(ioaddr, COPS_IO_EXTENT);
373 static int __init cops_irq (int ioaddr, int board)
375 * This does not use the IRQ to determine where the IRQ is. We just
376 * assume that when we get a correct status response that it's the IRQ.
377 * This really just verifies the IO port but since we only have access
378 * to such a small number of IRQs (5, 4, 3) this is not bad.
379 * This will probably not work for more than one card.
386 outb(0, ioaddr+DAYNA_RESET);
387 inb(ioaddr+DAYNA_RESET);
394 outb(0, ioaddr+TANG_RESET);
397 for(i=0; cops_irqlist[i] !=0; i++)
399 irqaddr = cops_irqlist[i];
400 for(x = 0xFFFF; x>0; x --) /* wait for response */
404 status = (inb(ioaddr+DAYNA_CARD_STATUS)&3);
410 if((inb(ioaddr+TANG_CARD_STATUS)& TANG_TX_READY) !=0)
415 return 0; /* no IRQ found */
419 * Open/initialize the board. This is called (in the current kernel)
420 * sometime after booting when the 'ifconfig' program is run.
422 static int cops_open(struct net_device *dev)
424 struct cops_local *lp = netdev_priv(dev);
429 * I don't know if the Dayna-style boards support polled
430 * operation. For now, only allow it for Tangent.
432 if(lp->board==TANGENT) /* Poll 20 times per second */
434 init_timer(&cops_timer);
435 cops_timer.function = cops_poll;
436 cops_timer.data = (unsigned long)dev;
437 cops_timer.expires = jiffies + HZ/20;
438 add_timer(&cops_timer);
442 printk(KERN_WARNING "%s: No irq line set\n", dev->name);
447 cops_jumpstart(dev); /* Start the card up. */
449 netif_start_queue(dev);
454 * This allows for a dynamic start/restart of the entire card.
456 static int cops_jumpstart(struct net_device *dev)
458 struct cops_local *lp = netdev_priv(dev);
461 * Once the card has the firmware loaded and has acquired
462 * the nodeid, if it is reset it will lose it all.
464 cops_reset(dev,1); /* Need to reset card before load firmware. */
465 cops_load(dev); /* Load the firmware. */
468 * If atalkd already gave us a nodeid we will use that
469 * one again, else we wait for atalkd to give us a nodeid
470 * in cops_ioctl. This may cause a problem if someone steals
471 * our nodeid while we are resetting.
474 cops_nodeid(dev,lp->node_acquire);
479 static void tangent_wait_reset(int ioaddr)
483 while(timeout++ < 5 && (inb(ioaddr+TANG_CARD_STATUS)&TANG_TX_READY)==0)
484 mdelay(1); /* Wait 1 second */
488 * Reset the LocalTalk board.
490 static void cops_reset(struct net_device *dev, int sleep)
492 struct cops_local *lp = netdev_priv(dev);
493 int ioaddr=dev->base_addr;
495 if(lp->board==TANGENT)
497 inb(ioaddr); /* Clear request latch. */
498 outb(0,ioaddr); /* Clear the TANG_TX_READY flop. */
499 outb(0, ioaddr+TANG_RESET); /* Reset the adapter. */
501 tangent_wait_reset(ioaddr);
502 outb(0, ioaddr+TANG_CLEAR_INT);
506 outb(0, ioaddr+DAYNA_RESET); /* Assert the reset port */
507 inb(ioaddr+DAYNA_RESET); /* Clear the reset */
512 /* Let card finish initializing, about 1/3 second */
513 while(jiffies-snap<HZ/3)
519 netif_wake_queue(dev);
523 static void cops_load (struct net_device *dev)
526 struct ltfirmware *ltf= (struct ltfirmware *)&ifr.ifr_ifru;
527 struct cops_local *lp = netdev_priv(dev);
528 int ioaddr=dev->base_addr;
531 strcpy(ifr.ifr_name,"lt0");
533 /* Get card's firmware code and do some checks on it. */
534 #ifdef CONFIG_COPS_DAYNA
537 ltf->length=sizeof(ffdrv_code);
538 ltf->data=ffdrv_code;
542 #ifdef CONFIG_COPS_TANGENT
543 if(lp->board==TANGENT)
545 ltf->length=sizeof(ltdrv_code);
546 ltf->data=ltdrv_code;
551 printk(KERN_INFO "%s; unsupported board type.\n", dev->name);
555 /* Check to make sure firmware is correct length. */
556 if(lp->board==DAYNA && ltf->length!=5983)
558 printk(KERN_WARNING "%s: Firmware is not length of FFDRV.BIN.\n", dev->name);
561 if(lp->board==TANGENT && ltf->length!=2501)
563 printk(KERN_WARNING "%s: Firmware is not length of DRVCODE.BIN.\n", dev->name);
570 * We must wait for a status response
571 * with the DAYNA board.
575 if((inb(ioaddr+DAYNA_CARD_STATUS)&3)==1)
584 * Upload the firmware and kick. Byte-by-byte works nicely here.
587 length = ltf->length;
590 outb(ltf->data[i], ioaddr);
595 printk("%s: Uploaded firmware - %d bytes of %d bytes.\n",
596 dev->name, i, ltf->length);
598 if(lp->board==DAYNA) /* Tell Dayna to run the firmware code. */
599 outb(1, ioaddr+DAYNA_INT_CARD);
600 else /* Tell Tang to run the firmware code. */
603 if(lp->board==TANGENT)
605 tangent_wait_reset(ioaddr);
606 inb(ioaddr); /* Clear initial ready signal. */
613 * Get the LocalTalk Nodeid from the card. We can suggest
614 * any nodeid 1-254. The card will try and get that exact
615 * address else we can specify 0 as the nodeid and the card
616 * will autoprobe for a nodeid.
618 static int cops_nodeid (struct net_device *dev, int nodeid)
620 struct cops_local *lp = netdev_priv(dev);
621 int ioaddr = dev->base_addr;
623 if(lp->board == DAYNA)
625 /* Empty any pending adapter responses. */
626 while((inb(ioaddr+DAYNA_CARD_STATUS)&DAYNA_TX_READY)==0)
628 outb(0, ioaddr+COPS_CLEAR_INT); /* Clear interrupts. */
629 if((inb(ioaddr+DAYNA_CARD_STATUS)&0x03)==DAYNA_RX_REQUEST)
630 cops_rx(dev); /* Kick any packets waiting. */
634 outb(2, ioaddr); /* Output command packet length as 2. */
636 outb(LAP_INIT, ioaddr); /* Send LAP_INIT command byte. */
637 outb(nodeid, ioaddr); /* Suggest node address. */
640 if(lp->board == TANGENT)
642 /* Empty any pending adapter responses. */
643 while(inb(ioaddr+TANG_CARD_STATUS)&TANG_RX_READY)
645 outb(0, ioaddr+COPS_CLEAR_INT); /* Clear interrupt. */
646 cops_rx(dev); /* Kick out packets waiting. */
650 /* Not sure what Tangent does if nodeid picked is used. */
651 if(nodeid == 0) /* Seed. */
652 nodeid = jiffies&0xFF; /* Get a random try */
653 outb(2, ioaddr); /* Command length LSB */
654 outb(0, ioaddr); /* Command length MSB */
655 outb(LAP_INIT, ioaddr); /* Send LAP_INIT byte */
656 outb(nodeid, ioaddr); /* LAP address hint. */
657 outb(0xFF, ioaddr); /* Int. level to use */
660 lp->node_acquire=0; /* Set nodeid holder to 0. */
661 while(lp->node_acquire==0) /* Get *True* nodeid finally. */
663 outb(0, ioaddr+COPS_CLEAR_INT); /* Clear any interrupt. */
665 if(lp->board == DAYNA)
667 if((inb(ioaddr+DAYNA_CARD_STATUS)&0x03)==DAYNA_RX_REQUEST)
668 cops_rx(dev); /* Grab the nodeid put in lp->node_acquire. */
670 if(lp->board == TANGENT)
672 if(inb(ioaddr+TANG_CARD_STATUS)&TANG_RX_READY)
673 cops_rx(dev); /* Grab the nodeid put in lp->node_acquire. */
679 printk(KERN_DEBUG "%s: Node ID %d has been acquired.\n",
680 dev->name, lp->node_acquire);
682 lp->nodeid=1; /* Set got nodeid to 1. */
688 * Poll the Tangent type cards to see if we have work.
691 static void cops_poll(unsigned long ltdev)
696 struct net_device *dev = (struct net_device *)ltdev;
698 del_timer(&cops_timer);
701 return; /* We've been downed */
703 ioaddr = dev->base_addr;
705 status=inb(ioaddr+TANG_CARD_STATUS);
706 if(status & TANG_RX_READY)
708 if(status & TANG_TX_READY)
709 netif_wake_queue(dev);
710 status = inb(ioaddr+TANG_CARD_STATUS);
711 } while((++boguscount < 20) && (status&(TANG_RX_READY|TANG_TX_READY)));
713 /* poll 20 times per second */
714 cops_timer.expires = jiffies + HZ/20;
715 add_timer(&cops_timer);
721 * The typical workload of the driver:
722 * Handle the network interface interrupts.
724 static irqreturn_t cops_interrupt(int irq, void *dev_id)
726 struct net_device *dev = dev_id;
727 struct cops_local *lp;
731 ioaddr = dev->base_addr;
732 lp = netdev_priv(dev);
737 outb(0, ioaddr + COPS_CLEAR_INT);
738 status=inb(ioaddr+DAYNA_CARD_STATUS);
739 if((status&0x03)==DAYNA_RX_REQUEST)
741 netif_wake_queue(dev);
742 } while(++boguscount < 20);
747 status=inb(ioaddr+TANG_CARD_STATUS);
748 if(status & TANG_RX_READY)
750 if(status & TANG_TX_READY)
751 netif_wake_queue(dev);
752 status=inb(ioaddr+TANG_CARD_STATUS);
753 } while((++boguscount < 20) && (status&(TANG_RX_READY|TANG_TX_READY)));
760 * We have a good packet(s), get it/them out of the buffers.
762 static void cops_rx(struct net_device *dev)
766 struct sk_buff *skb = NULL;
767 struct cops_local *lp = netdev_priv(dev);
768 int ioaddr = dev->base_addr;
773 spin_lock_irqsave(&lp->lock, flags);
777 outb(0, ioaddr); /* Send out Zero length. */
779 outb(DATA_READ, ioaddr); /* Send read command out. */
781 /* Wait for DMA to turn around. */
782 while(++boguscount<1000000)
785 if((inb(ioaddr+DAYNA_CARD_STATUS)&0x03)==DAYNA_RX_READY)
789 if(boguscount==1000000)
791 printk(KERN_WARNING "%s: DMA timed out.\n",dev->name);
792 spin_unlock_irqrestore(&lp->lock, flags);
797 /* Get response length. */
799 pkt_len = inb(ioaddr) & 0xFF;
801 pkt_len = inb(ioaddr) & 0x00FF;
802 pkt_len |= (inb(ioaddr) << 8);
804 rsp_type=inb(ioaddr);
806 /* Malloc up new buffer. */
807 skb = dev_alloc_skb(pkt_len);
810 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n",
812 lp->stats.rx_dropped++;
813 while(pkt_len--) /* Discard packet */
815 spin_unlock_irqrestore(&lp->lock, flags);
819 skb_put(skb, pkt_len);
820 skb->protocol = htons(ETH_P_LOCALTALK);
822 insb(ioaddr, skb->data, pkt_len); /* Eat the Data */
825 outb(1, ioaddr+DAYNA_INT_CARD); /* Interrupt the card */
827 spin_unlock_irqrestore(&lp->lock, flags); /* Restore interrupts. */
829 /* Check for bad response length */
830 if(pkt_len < 0 || pkt_len > MAX_LLAP_SIZE)
832 printk(KERN_WARNING "%s: Bad packet length of %d bytes.\n",
834 lp->stats.tx_errors++;
835 dev_kfree_skb_any(skb);
839 /* Set nodeid and then get out. */
840 if(rsp_type == LAP_INIT_RSP)
841 { /* Nodeid taken from received packet. */
842 lp->node_acquire = skb->data[0];
843 dev_kfree_skb_any(skb);
847 /* One last check to make sure we have a good packet. */
848 if(rsp_type != LAP_RESPONSE)
850 printk(KERN_WARNING "%s: Bad packet type %d.\n", dev->name, rsp_type);
851 lp->stats.tx_errors++;
852 dev_kfree_skb_any(skb);
856 skb->mac.raw = skb->data; /* Point to entire packet. */
858 skb->h.raw = skb->data; /* Point to data (Skip header). */
860 /* Update the counters. */
861 lp->stats.rx_packets++;
862 lp->stats.rx_bytes += skb->len;
864 /* Send packet to a higher place. */
866 dev->last_rx = jiffies;
869 static void cops_timeout(struct net_device *dev)
871 struct cops_local *lp = netdev_priv(dev);
872 int ioaddr = dev->base_addr;
874 lp->stats.tx_errors++;
875 if(lp->board==TANGENT)
877 if((inb(ioaddr+TANG_CARD_STATUS)&TANG_TX_READY)==0)
878 printk(KERN_WARNING "%s: No TX complete interrupt.\n", dev->name);
880 printk(KERN_WARNING "%s: Transmit timed out.\n", dev->name);
881 cops_jumpstart(dev); /* Restart the card. */
882 dev->trans_start = jiffies;
883 netif_wake_queue(dev);
888 * Make the card transmit a LocalTalk packet.
891 static int cops_send_packet(struct sk_buff *skb, struct net_device *dev)
893 struct cops_local *lp = netdev_priv(dev);
894 int ioaddr = dev->base_addr;
898 * Block a timer-based transmit from overlapping.
901 netif_stop_queue(dev);
903 spin_lock_irqsave(&lp->lock, flags);
904 if(lp->board == DAYNA) /* Wait for adapter transmit buffer. */
905 while((inb(ioaddr+DAYNA_CARD_STATUS)&DAYNA_TX_READY)==0)
907 if(lp->board == TANGENT) /* Wait for adapter transmit buffer. */
908 while((inb(ioaddr+TANG_CARD_STATUS)&TANG_TX_READY)==0)
911 /* Output IO length. */
912 outb(skb->len, ioaddr);
913 if(lp->board == DAYNA)
914 outb(skb->len >> 8, ioaddr);
916 outb((skb->len >> 8)&0x0FF, ioaddr);
918 /* Output IO code. */
919 outb(LAP_WRITE, ioaddr);
921 if(lp->board == DAYNA) /* Check the transmit buffer again. */
922 while((inb(ioaddr+DAYNA_CARD_STATUS)&DAYNA_TX_READY)==0);
924 outsb(ioaddr, skb->data, skb->len); /* Send out the data. */
926 if(lp->board==DAYNA) /* Dayna requires you kick the card */
927 outb(1, ioaddr+DAYNA_INT_CARD);
929 spin_unlock_irqrestore(&lp->lock, flags); /* Restore interrupts. */
931 /* Done sending packet, update counters and cleanup. */
932 lp->stats.tx_packets++;
933 lp->stats.tx_bytes += skb->len;
934 dev->trans_start = jiffies;
940 * Dummy function to keep the Appletalk layer happy.
943 static void set_multicast_list(struct net_device *dev)
946 printk("%s: set_multicast_list executed\n", dev->name);
950 * Another Dummy function to keep the Appletalk layer happy.
953 static int cops_hard_header(struct sk_buff *skb, struct net_device *dev,
954 unsigned short type, void *daddr, void *saddr,
958 printk("%s: cops_hard_header executed. Wow!\n", dev->name);
963 * System ioctls for the COPS LocalTalk card.
966 static int cops_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
968 struct cops_local *lp = netdev_priv(dev);
969 struct sockaddr_at *sa = (struct sockaddr_at *)&ifr->ifr_addr;
970 struct atalk_addr *aa = (struct atalk_addr *)&lp->node_addr;
975 /* Get and set the nodeid and network # atalkd wants. */
976 cops_nodeid(dev, sa->sat_addr.s_node);
977 aa->s_net = sa->sat_addr.s_net;
978 aa->s_node = lp->node_acquire;
980 /* Set broardcast address. */
981 dev->broadcast[0] = 0xFF;
983 /* Set hardware address. */
984 dev->dev_addr[0] = aa->s_node;
989 sa->sat_addr.s_net = aa->s_net;
990 sa->sat_addr.s_node = aa->s_node;
999 * The inverse routine to cops_open().
1002 static int cops_close(struct net_device *dev)
1004 struct cops_local *lp = netdev_priv(dev);
1006 /* If we were running polled, yank the timer.
1008 if(lp->board==TANGENT && dev->irq==0)
1009 del_timer(&cops_timer);
1011 netif_stop_queue(dev);
1016 * Get the current statistics.
1017 * This may be called with the card open or closed.
1019 static struct net_device_stats *cops_get_stats(struct net_device *dev)
1021 struct cops_local *lp = netdev_priv(dev);
1026 static struct net_device *cops_dev;
1028 MODULE_LICENSE("GPL");
1029 module_param(io, int, 0);
1030 module_param(irq, int, 0);
1031 module_param(board_type, int, 0);
1033 int __init init_module(void)
1036 printk(KERN_WARNING "%s: You shouldn't autoprobe with insmod\n",
1038 cops_dev = cops_probe(-1);
1039 if (IS_ERR(cops_dev))
1040 return PTR_ERR(cops_dev);
1044 void cleanup_module(void)
1046 unregister_netdev(cops_dev);
1047 cleanup_card(cops_dev);
1048 free_netdev(cops_dev);
1054 * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O2 -c cops.c"
1056 * c-file-offsets: ((substatement-open . 0))