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/config.h>
52 #include <linux/module.h>
53 #include <linux/kernel.h>
54 #include <linux/types.h>
55 #include <linux/fcntl.h>
56 #include <linux/interrupt.h>
57 #include <linux/ptrace.h>
58 #include <linux/ioport.h>
60 #include <linux/slab.h>
61 #include <linux/string.h>
62 #include <linux/errno.h>
63 #include <linux/init.h>
64 #include <linux/netdevice.h>
65 #include <linux/etherdevice.h>
66 #include <linux/skbuff.h>
67 #include <linux/if_arp.h>
68 #include <linux/if_ltalk.h>
69 #include <linux/delay.h> /* For udelay() */
70 #include <linux/atalk.h>
71 #include <linux/spinlock.h>
72 #include <linux/bitops.h>
74 #include <asm/system.h>
78 #include "cops.h" /* Our Stuff */
79 #include "cops_ltdrv.h" /* Firmware code for Tangent type cards. */
80 #include "cops_ffdrv.h" /* Firmware code for Dayna type cards. */
83 * The name of the card. Is used for messages and in the requests for
84 * io regions, irqs and dma channels
87 static const char *cardname = "cops";
89 #ifdef CONFIG_COPS_DAYNA
90 static int board_type = DAYNA; /* Module exported */
92 static int board_type = TANGENT;
95 static int io = 0x240; /* Default IO for Dayna */
96 static int irq = 5; /* Default IRQ */
99 * COPS Autoprobe information.
100 * Right now if port address is right but IRQ is not 5 this will
101 * return a 5 no matter what since we will still get a status response.
102 * Need one more additional check to narrow down after we have gotten
103 * the ioaddr. But since only other possible IRQs is 3 and 4 so no real
104 * hurry on this. I *STRONGLY* recommend using IRQ 5 for your card with
107 * This driver has 2 modes and they are: Dayna mode and Tangent mode.
108 * Each mode corresponds with the type of card. It has been found
109 * that there are 2 main types of cards and all other cards are
110 * the same and just have different names or only have minor differences
111 * such as more IO ports. As this driver is tested it will
112 * become more clear on exactly what cards are supported. The driver
113 * defaults to using Dayna mode. To change the drivers mode, simply
114 * select Dayna or Tangent mode when configuring the kernel.
116 * This driver should support:
117 * TANGENT driver mode:
118 * Tangent ATB-II, Novell NL-1000, Daystar Digital LT-200,
121 * Dayna DL2000/DaynaTalk PC (Half Length), COPS LT-95,
122 * Farallon PhoneNET PC III, Farallon PhoneNET PC II
123 * Other cards possibly supported mode unkown though:
124 * Dayna DL2000 (Full length), COPS LT/M (Micro-Channel)
126 * Cards NOT supported by this driver but supported by the ltpc.c
127 * driver written by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
128 * Farallon PhoneNET PC
129 * Original Apple LocalTalk PC card
133 * The Daystar Digital LT200 boards do not support interrupt-driven
134 * IO. You must specify 'irq=0xff' as a module parameter to invoke
135 * polled mode. I also believe that the port probing logic is quite
136 * dangerous at best and certainly hopeless for a polled card. Best to
137 * specify both. - Steve H.
142 * Zero terminated list of IO ports to probe.
145 static unsigned int ports[] = {
146 0x240, 0x340, 0x200, 0x210, 0x220, 0x230, 0x260,
147 0x2A0, 0x300, 0x310, 0x320, 0x330, 0x350, 0x360,
152 * Zero terminated list of IRQ ports to probe.
155 static int cops_irqlist[] = {
159 static struct timer_list cops_timer;
161 /* use 0 for production, 1 for verification, 2 for debug, 3 for verbose debug */
165 static unsigned int cops_debug = COPS_DEBUG;
167 /* The number of low I/O ports used by the card. */
168 #define COPS_IO_EXTENT 8
170 /* Information that needs to be kept for each board. */
174 struct net_device_stats stats;
175 int board; /* Holds what board type is. */
176 int nodeid; /* Set to 1 once have nodeid. */
177 unsigned char node_acquire; /* Node ID when acquired. */
178 struct atalk_addr node_addr; /* Full node address */
179 spinlock_t lock; /* RX/TX lock */
182 /* Index to functions, as function prototypes. */
183 static int cops_probe1 (struct net_device *dev, int ioaddr);
184 static int cops_irq (int ioaddr, int board);
186 static int cops_open (struct net_device *dev);
187 static int cops_jumpstart (struct net_device *dev);
188 static void cops_reset (struct net_device *dev, int sleep);
189 static void cops_load (struct net_device *dev);
190 static int cops_nodeid (struct net_device *dev, int nodeid);
192 static irqreturn_t cops_interrupt (int irq, void *dev_id, struct pt_regs *regs);
193 static void cops_poll (unsigned long ltdev);
194 static void cops_timeout(struct net_device *dev);
195 static void cops_rx (struct net_device *dev);
196 static int cops_send_packet (struct sk_buff *skb, struct net_device *dev);
197 static void set_multicast_list (struct net_device *dev);
198 static int cops_hard_header (struct sk_buff *skb, struct net_device *dev,
199 unsigned short type, void *daddr, void *saddr,
202 static int cops_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
203 static int cops_close (struct net_device *dev);
204 static struct net_device_stats *cops_get_stats (struct net_device *dev);
206 static void cleanup_card(struct net_device *dev)
209 free_irq(dev->irq, dev);
210 release_region(dev->base_addr, COPS_IO_EXTENT);
214 * Check for a network adaptor of this type, and return '0' iff one exists.
215 * If dev->base_addr == 0, probe all likely locations.
216 * If dev->base_addr in [1..0x1ff], always return failure.
217 * otherwise go with what we pass in.
219 struct net_device * __init cops_probe(int unit)
221 struct net_device *dev;
226 dev = alloc_ltalkdev(sizeof(struct cops_local));
228 return ERR_PTR(-ENOMEM);
231 sprintf(dev->name, "lt%d", unit);
232 netdev_boot_setup_check(dev);
234 base_addr = dev->base_addr;
236 base_addr = dev->base_addr = io;
239 SET_MODULE_OWNER(dev);
241 if (base_addr > 0x1ff) { /* Check a single specified location. */
242 err = cops_probe1(dev, base_addr);
243 } else if (base_addr != 0) { /* Don't probe at all. */
246 /* FIXME Does this really work for cards which generate irq?
247 * It's definitely N.G. for polled Tangent. sh
248 * Dayna cards don't autoprobe well at all, but if your card is
249 * at IRQ 5 & IO 0x240 we find it every time. ;) JS
251 for (port = ports; *port && cops_probe1(dev, *port) < 0; port++)
258 err = register_netdev(dev);
270 * This is the real probe routine. Linux has a history of friendly device
271 * probes on the ISA bus. A good device probes avoids doing writes, and
272 * verifies that the correct device exists and functions.
274 static int __init cops_probe1(struct net_device *dev, int ioaddr)
276 struct cops_local *lp;
277 static unsigned version_printed;
278 int board = board_type;
281 if(cops_debug && version_printed++ == 0)
282 printk("%s", version);
284 /* Grab the region so no one else tries to probe our ioports. */
285 if (!request_region(ioaddr, COPS_IO_EXTENT, dev->name))
289 * Since this board has jumpered interrupts, allocate the interrupt
290 * vector now. There is no point in waiting since no other device
291 * can use the interrupt, and this marks the irq as busy. Jumpered
292 * interrupts are typically not reported by the boards, and we must
293 * used AutoIRQ to find them.
299 /* COPS AutoIRQ routine */
300 dev->irq = cops_irq(ioaddr, board);
303 /* No IRQ found on this port, fallthrough */
308 /* Fixup for users that don't know that IRQ 2 is really
309 * IRQ 9, or don't know which one to set.
315 /* Polled operation requested. Although irq of zero passed as
316 * a parameter tells the init routines to probe, we'll
317 * overload it to denote polled operation at runtime.
327 /* Reserve any actual interrupt. */
329 retval = request_irq(dev->irq, &cops_interrupt, 0, dev->name, dev);
334 dev->base_addr = ioaddr;
336 lp = netdev_priv(dev);
337 memset(lp, 0, sizeof(struct cops_local));
338 spin_lock_init(&lp->lock);
340 /* Copy local board variable to lp struct. */
343 dev->hard_start_xmit = cops_send_packet;
344 dev->tx_timeout = cops_timeout;
345 dev->watchdog_timeo = HZ * 2;
346 dev->hard_header = cops_hard_header;
347 dev->get_stats = cops_get_stats;
348 dev->open = cops_open;
349 dev->stop = cops_close;
350 dev->do_ioctl = cops_ioctl;
351 dev->set_multicast_list = set_multicast_list;
354 /* Tell the user where the card is and what mode we're in. */
356 printk("%s: %s at %#3x, using IRQ %d, in Dayna mode.\n",
357 dev->name, cardname, ioaddr, dev->irq);
360 printk("%s: %s at %#3x, IRQ %d, in Tangent mode\n",
361 dev->name, cardname, ioaddr, dev->irq);
363 printk("%s: %s at %#3x, using polled IO, in Tangent mode.\n",
364 dev->name, cardname, ioaddr);
370 release_region(ioaddr, COPS_IO_EXTENT);
374 static int __init cops_irq (int ioaddr, int board)
376 * This does not use the IRQ to determine where the IRQ is. We just
377 * assume that when we get a correct status response that it's the IRQ.
378 * This really just verifies the IO port but since we only have access
379 * to such a small number of IRQs (5, 4, 3) this is not bad.
380 * This will probably not work for more than one card.
387 outb(0, ioaddr+DAYNA_RESET);
388 inb(ioaddr+DAYNA_RESET);
395 outb(0, ioaddr+TANG_RESET);
398 for(i=0; cops_irqlist[i] !=0; i++)
400 irqaddr = cops_irqlist[i];
401 for(x = 0xFFFF; x>0; x --) /* wait for response */
405 status = (inb(ioaddr+DAYNA_CARD_STATUS)&3);
411 if((inb(ioaddr+TANG_CARD_STATUS)& TANG_TX_READY) !=0)
416 return 0; /* no IRQ found */
420 * Open/initialize the board. This is called (in the current kernel)
421 * sometime after booting when the 'ifconfig' program is run.
423 static int cops_open(struct net_device *dev)
425 struct cops_local *lp = netdev_priv(dev);
430 * I don't know if the Dayna-style boards support polled
431 * operation. For now, only allow it for Tangent.
433 if(lp->board==TANGENT) /* Poll 20 times per second */
435 init_timer(&cops_timer);
436 cops_timer.function = cops_poll;
437 cops_timer.data = (unsigned long)dev;
438 cops_timer.expires = jiffies + HZ/20;
439 add_timer(&cops_timer);
443 printk(KERN_WARNING "%s: No irq line set\n", dev->name);
448 cops_jumpstart(dev); /* Start the card up. */
450 netif_start_queue(dev);
455 * This allows for a dynamic start/restart of the entire card.
457 static int cops_jumpstart(struct net_device *dev)
459 struct cops_local *lp = netdev_priv(dev);
462 * Once the card has the firmware loaded and has acquired
463 * the nodeid, if it is reset it will lose it all.
465 cops_reset(dev,1); /* Need to reset card before load firmware. */
466 cops_load(dev); /* Load the firmware. */
469 * If atalkd already gave us a nodeid we will use that
470 * one again, else we wait for atalkd to give us a nodeid
471 * in cops_ioctl. This may cause a problem if someone steals
472 * our nodeid while we are resetting.
475 cops_nodeid(dev,lp->node_acquire);
480 static void tangent_wait_reset(int ioaddr)
484 while(timeout++ < 5 && (inb(ioaddr+TANG_CARD_STATUS)&TANG_TX_READY)==0)
485 mdelay(1); /* Wait 1 second */
489 * Reset the LocalTalk board.
491 static void cops_reset(struct net_device *dev, int sleep)
493 struct cops_local *lp = netdev_priv(dev);
494 int ioaddr=dev->base_addr;
496 if(lp->board==TANGENT)
498 inb(ioaddr); /* Clear request latch. */
499 outb(0,ioaddr); /* Clear the TANG_TX_READY flop. */
500 outb(0, ioaddr+TANG_RESET); /* Reset the adapter. */
502 tangent_wait_reset(ioaddr);
503 outb(0, ioaddr+TANG_CLEAR_INT);
507 outb(0, ioaddr+DAYNA_RESET); /* Assert the reset port */
508 inb(ioaddr+DAYNA_RESET); /* Clear the reset */
513 /* Let card finish initializing, about 1/3 second */
514 while(jiffies-snap<HZ/3)
520 netif_wake_queue(dev);
524 static void cops_load (struct net_device *dev)
527 struct ltfirmware *ltf= (struct ltfirmware *)&ifr.ifr_ifru;
528 struct cops_local *lp = netdev_priv(dev);
529 int ioaddr=dev->base_addr;
532 strcpy(ifr.ifr_name,"lt0");
534 /* Get card's firmware code and do some checks on it. */
535 #ifdef CONFIG_COPS_DAYNA
538 ltf->length=sizeof(ffdrv_code);
539 ltf->data=ffdrv_code;
543 #ifdef CONFIG_COPS_TANGENT
544 if(lp->board==TANGENT)
546 ltf->length=sizeof(ltdrv_code);
547 ltf->data=ltdrv_code;
552 printk(KERN_INFO "%s; unsupported board type.\n", dev->name);
556 /* Check to make sure firmware is correct length. */
557 if(lp->board==DAYNA && ltf->length!=5983)
559 printk(KERN_WARNING "%s: Firmware is not length of FFDRV.BIN.\n", dev->name);
562 if(lp->board==TANGENT && ltf->length!=2501)
564 printk(KERN_WARNING "%s: Firmware is not length of DRVCODE.BIN.\n", dev->name);
571 * We must wait for a status response
572 * with the DAYNA board.
576 if((inb(ioaddr+DAYNA_CARD_STATUS)&3)==1)
585 * Upload the firmware and kick. Byte-by-byte works nicely here.
588 length = ltf->length;
591 outb(ltf->data[i], ioaddr);
596 printk("%s: Uploaded firmware - %d bytes of %d bytes.\n",
597 dev->name, i, ltf->length);
599 if(lp->board==DAYNA) /* Tell Dayna to run the firmware code. */
600 outb(1, ioaddr+DAYNA_INT_CARD);
601 else /* Tell Tang to run the firmware code. */
604 if(lp->board==TANGENT)
606 tangent_wait_reset(ioaddr);
607 inb(ioaddr); /* Clear initial ready signal. */
614 * Get the LocalTalk Nodeid from the card. We can suggest
615 * any nodeid 1-254. The card will try and get that exact
616 * address else we can specify 0 as the nodeid and the card
617 * will autoprobe for a nodeid.
619 static int cops_nodeid (struct net_device *dev, int nodeid)
621 struct cops_local *lp = netdev_priv(dev);
622 int ioaddr = dev->base_addr;
624 if(lp->board == DAYNA)
626 /* Empty any pending adapter responses. */
627 while((inb(ioaddr+DAYNA_CARD_STATUS)&DAYNA_TX_READY)==0)
629 outb(0, ioaddr+COPS_CLEAR_INT); /* Clear interrupts. */
630 if((inb(ioaddr+DAYNA_CARD_STATUS)&0x03)==DAYNA_RX_REQUEST)
631 cops_rx(dev); /* Kick any packets waiting. */
635 outb(2, ioaddr); /* Output command packet length as 2. */
637 outb(LAP_INIT, ioaddr); /* Send LAP_INIT command byte. */
638 outb(nodeid, ioaddr); /* Suggest node address. */
641 if(lp->board == TANGENT)
643 /* Empty any pending adapter responses. */
644 while(inb(ioaddr+TANG_CARD_STATUS)&TANG_RX_READY)
646 outb(0, ioaddr+COPS_CLEAR_INT); /* Clear interrupt. */
647 cops_rx(dev); /* Kick out packets waiting. */
651 /* Not sure what Tangent does if nodeid picked is used. */
652 if(nodeid == 0) /* Seed. */
653 nodeid = jiffies&0xFF; /* Get a random try */
654 outb(2, ioaddr); /* Command length LSB */
655 outb(0, ioaddr); /* Command length MSB */
656 outb(LAP_INIT, ioaddr); /* Send LAP_INIT byte */
657 outb(nodeid, ioaddr); /* LAP address hint. */
658 outb(0xFF, ioaddr); /* Int. level to use */
661 lp->node_acquire=0; /* Set nodeid holder to 0. */
662 while(lp->node_acquire==0) /* Get *True* nodeid finally. */
664 outb(0, ioaddr+COPS_CLEAR_INT); /* Clear any interrupt. */
666 if(lp->board == DAYNA)
668 if((inb(ioaddr+DAYNA_CARD_STATUS)&0x03)==DAYNA_RX_REQUEST)
669 cops_rx(dev); /* Grab the nodeid put in lp->node_acquire. */
671 if(lp->board == TANGENT)
673 if(inb(ioaddr+TANG_CARD_STATUS)&TANG_RX_READY)
674 cops_rx(dev); /* Grab the nodeid put in lp->node_acquire. */
680 printk(KERN_DEBUG "%s: Node ID %d has been acquired.\n",
681 dev->name, lp->node_acquire);
683 lp->nodeid=1; /* Set got nodeid to 1. */
689 * Poll the Tangent type cards to see if we have work.
692 static void cops_poll(unsigned long ltdev)
697 struct net_device *dev = (struct net_device *)ltdev;
699 del_timer(&cops_timer);
702 return; /* We've been downed */
704 ioaddr = dev->base_addr;
706 status=inb(ioaddr+TANG_CARD_STATUS);
707 if(status & TANG_RX_READY)
709 if(status & TANG_TX_READY)
710 netif_wake_queue(dev);
711 status = inb(ioaddr+TANG_CARD_STATUS);
712 } while((++boguscount < 20) && (status&(TANG_RX_READY|TANG_TX_READY)));
714 /* poll 20 times per second */
715 cops_timer.expires = jiffies + HZ/20;
716 add_timer(&cops_timer);
722 * The typical workload of the driver:
723 * Handle the network interface interrupts.
725 static irqreturn_t cops_interrupt(int irq, void *dev_id, struct pt_regs * regs)
727 struct net_device *dev = dev_id;
728 struct cops_local *lp;
732 ioaddr = dev->base_addr;
733 lp = netdev_priv(dev);
738 outb(0, ioaddr + COPS_CLEAR_INT);
739 status=inb(ioaddr+DAYNA_CARD_STATUS);
740 if((status&0x03)==DAYNA_RX_REQUEST)
742 netif_wake_queue(dev);
743 } while(++boguscount < 20);
748 status=inb(ioaddr+TANG_CARD_STATUS);
749 if(status & TANG_RX_READY)
751 if(status & TANG_TX_READY)
752 netif_wake_queue(dev);
753 status=inb(ioaddr+TANG_CARD_STATUS);
754 } while((++boguscount < 20) && (status&(TANG_RX_READY|TANG_TX_READY)));
761 * We have a good packet(s), get it/them out of the buffers.
763 static void cops_rx(struct net_device *dev)
767 struct sk_buff *skb = NULL;
768 struct cops_local *lp = netdev_priv(dev);
769 int ioaddr = dev->base_addr;
774 spin_lock_irqsave(&lp->lock, flags);
778 outb(0, ioaddr); /* Send out Zero length. */
780 outb(DATA_READ, ioaddr); /* Send read command out. */
782 /* Wait for DMA to turn around. */
783 while(++boguscount<1000000)
786 if((inb(ioaddr+DAYNA_CARD_STATUS)&0x03)==DAYNA_RX_READY)
790 if(boguscount==1000000)
792 printk(KERN_WARNING "%s: DMA timed out.\n",dev->name);
793 spin_unlock_irqrestore(&lp->lock, flags);
798 /* Get response length. */
800 pkt_len = inb(ioaddr) & 0xFF;
802 pkt_len = inb(ioaddr) & 0x00FF;
803 pkt_len |= (inb(ioaddr) << 8);
805 rsp_type=inb(ioaddr);
807 /* Malloc up new buffer. */
808 skb = dev_alloc_skb(pkt_len);
811 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n",
813 lp->stats.rx_dropped++;
814 while(pkt_len--) /* Discard packet */
816 spin_unlock_irqrestore(&lp->lock, flags);
820 skb_put(skb, pkt_len);
821 skb->protocol = htons(ETH_P_LOCALTALK);
823 insb(ioaddr, skb->data, pkt_len); /* Eat the Data */
826 outb(1, ioaddr+DAYNA_INT_CARD); /* Interrupt the card */
828 spin_unlock_irqrestore(&lp->lock, flags); /* Restore interrupts. */
830 /* Check for bad response length */
831 if(pkt_len < 0 || pkt_len > MAX_LLAP_SIZE)
833 printk(KERN_WARNING "%s: Bad packet length of %d bytes.\n",
835 lp->stats.tx_errors++;
836 dev_kfree_skb_any(skb);
840 /* Set nodeid and then get out. */
841 if(rsp_type == LAP_INIT_RSP)
842 { /* Nodeid taken from received packet. */
843 lp->node_acquire = skb->data[0];
844 dev_kfree_skb_any(skb);
848 /* One last check to make sure we have a good packet. */
849 if(rsp_type != LAP_RESPONSE)
851 printk(KERN_WARNING "%s: Bad packet type %d.\n", dev->name, rsp_type);
852 lp->stats.tx_errors++;
853 dev_kfree_skb_any(skb);
857 skb->mac.raw = skb->data; /* Point to entire packet. */
859 skb->h.raw = skb->data; /* Point to data (Skip header). */
861 /* Update the counters. */
862 lp->stats.rx_packets++;
863 lp->stats.rx_bytes += skb->len;
865 /* Send packet to a higher place. */
867 dev->last_rx = jiffies;
870 static void cops_timeout(struct net_device *dev)
872 struct cops_local *lp = netdev_priv(dev);
873 int ioaddr = dev->base_addr;
875 lp->stats.tx_errors++;
876 if(lp->board==TANGENT)
878 if((inb(ioaddr+TANG_CARD_STATUS)&TANG_TX_READY)==0)
879 printk(KERN_WARNING "%s: No TX complete interrupt.\n", dev->name);
881 printk(KERN_WARNING "%s: Transmit timed out.\n", dev->name);
882 cops_jumpstart(dev); /* Restart the card. */
883 dev->trans_start = jiffies;
884 netif_wake_queue(dev);
889 * Make the card transmit a LocalTalk packet.
892 static int cops_send_packet(struct sk_buff *skb, struct net_device *dev)
894 struct cops_local *lp = netdev_priv(dev);
895 int ioaddr = dev->base_addr;
899 * Block a timer-based transmit from overlapping.
902 netif_stop_queue(dev);
904 spin_lock_irqsave(&lp->lock, flags);
905 if(lp->board == DAYNA) /* Wait for adapter transmit buffer. */
906 while((inb(ioaddr+DAYNA_CARD_STATUS)&DAYNA_TX_READY)==0)
908 if(lp->board == TANGENT) /* Wait for adapter transmit buffer. */
909 while((inb(ioaddr+TANG_CARD_STATUS)&TANG_TX_READY)==0)
912 /* Output IO length. */
913 outb(skb->len, ioaddr);
914 if(lp->board == DAYNA)
915 outb(skb->len >> 8, ioaddr);
917 outb((skb->len >> 8)&0x0FF, ioaddr);
919 /* Output IO code. */
920 outb(LAP_WRITE, ioaddr);
922 if(lp->board == DAYNA) /* Check the transmit buffer again. */
923 while((inb(ioaddr+DAYNA_CARD_STATUS)&DAYNA_TX_READY)==0);
925 outsb(ioaddr, skb->data, skb->len); /* Send out the data. */
927 if(lp->board==DAYNA) /* Dayna requires you kick the card */
928 outb(1, ioaddr+DAYNA_INT_CARD);
930 spin_unlock_irqrestore(&lp->lock, flags); /* Restore interrupts. */
932 /* Done sending packet, update counters and cleanup. */
933 lp->stats.tx_packets++;
934 lp->stats.tx_bytes += skb->len;
935 dev->trans_start = jiffies;
941 * Dummy function to keep the Appletalk layer happy.
944 static void set_multicast_list(struct net_device *dev)
947 printk("%s: set_multicast_list executed\n", dev->name);
951 * Another Dummy function to keep the Appletalk layer happy.
954 static int cops_hard_header(struct sk_buff *skb, struct net_device *dev,
955 unsigned short type, void *daddr, void *saddr,
959 printk("%s: cops_hard_header executed. Wow!\n", dev->name);
964 * System ioctls for the COPS LocalTalk card.
967 static int cops_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
969 struct cops_local *lp = netdev_priv(dev);
970 struct sockaddr_at *sa = (struct sockaddr_at *)&ifr->ifr_addr;
971 struct atalk_addr *aa = (struct atalk_addr *)&lp->node_addr;
976 /* Get and set the nodeid and network # atalkd wants. */
977 cops_nodeid(dev, sa->sat_addr.s_node);
978 aa->s_net = sa->sat_addr.s_net;
979 aa->s_node = lp->node_acquire;
981 /* Set broardcast address. */
982 dev->broadcast[0] = 0xFF;
984 /* Set hardware address. */
985 dev->dev_addr[0] = aa->s_node;
990 sa->sat_addr.s_net = aa->s_net;
991 sa->sat_addr.s_node = aa->s_node;
1000 * The inverse routine to cops_open().
1003 static int cops_close(struct net_device *dev)
1005 struct cops_local *lp = netdev_priv(dev);
1007 /* If we were running polled, yank the timer.
1009 if(lp->board==TANGENT && dev->irq==0)
1010 del_timer(&cops_timer);
1012 netif_stop_queue(dev);
1017 * Get the current statistics.
1018 * This may be called with the card open or closed.
1020 static struct net_device_stats *cops_get_stats(struct net_device *dev)
1022 struct cops_local *lp = netdev_priv(dev);
1027 static struct net_device *cops_dev;
1029 MODULE_LICENSE("GPL");
1030 module_param(io, int, 0);
1031 module_param(irq, int, 0);
1032 module_param(board_type, int, 0);
1034 int init_module(void)
1037 printk(KERN_WARNING "%s: You shouldn't autoprobe with insmod\n",
1039 cops_dev = cops_probe(-1);
1040 if (IS_ERR(cops_dev))
1041 return PTR_ERR(cops_dev);
1045 void cleanup_module(void)
1047 unregister_netdev(cops_dev);
1048 cleanup_card(cops_dev);
1049 free_netdev(cops_dev);
1055 * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O2 -c cops.c"
1057 * c-file-offsets: ((substatement-open . 0))