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@lxorguk.ukuu.org.uk>
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>
72 #include <linux/jiffies.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 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_ioctl (struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
198 static int cops_close (struct net_device
*dev
);
200 static void cleanup_card(struct net_device
*dev
)
203 free_irq(dev
->irq
, dev
);
204 release_region(dev
->base_addr
, COPS_IO_EXTENT
);
208 * Check for a network adaptor of this type, and return '0' iff one exists.
209 * If dev->base_addr == 0, probe all likely locations.
210 * If dev->base_addr in [1..0x1ff], always return failure.
211 * otherwise go with what we pass in.
213 struct net_device
* __init
cops_probe(int unit
)
215 struct net_device
*dev
;
220 dev
= alloc_ltalkdev(sizeof(struct cops_local
));
222 return ERR_PTR(-ENOMEM
);
225 sprintf(dev
->name
, "lt%d", unit
);
226 netdev_boot_setup_check(dev
);
228 base_addr
= dev
->base_addr
;
230 base_addr
= dev
->base_addr
= io
;
233 if (base_addr
> 0x1ff) { /* Check a single specified location. */
234 err
= cops_probe1(dev
, base_addr
);
235 } else if (base_addr
!= 0) { /* Don't probe at all. */
238 /* FIXME Does this really work for cards which generate irq?
239 * It's definitely N.G. for polled Tangent. sh
240 * Dayna cards don't autoprobe well at all, but if your card is
241 * at IRQ 5 & IO 0x240 we find it every time. ;) JS
243 for (port
= ports
; *port
&& cops_probe1(dev
, *port
) < 0; port
++)
250 err
= register_netdev(dev
);
262 * This is the real probe routine. Linux has a history of friendly device
263 * probes on the ISA bus. A good device probes avoids doing writes, and
264 * verifies that the correct device exists and functions.
266 static int __init
cops_probe1(struct net_device
*dev
, int ioaddr
)
268 struct cops_local
*lp
;
269 static unsigned version_printed
;
270 int board
= board_type
;
273 if(cops_debug
&& version_printed
++ == 0)
274 printk("%s", version
);
276 /* Grab the region so no one else tries to probe our ioports. */
277 if (!request_region(ioaddr
, COPS_IO_EXTENT
, dev
->name
))
281 * Since this board has jumpered interrupts, allocate the interrupt
282 * vector now. There is no point in waiting since no other device
283 * can use the interrupt, and this marks the irq as busy. Jumpered
284 * interrupts are typically not reported by the boards, and we must
285 * used AutoIRQ to find them.
291 /* COPS AutoIRQ routine */
292 dev
->irq
= cops_irq(ioaddr
, board
);
295 /* No IRQ found on this port, fallthrough */
300 /* Fixup for users that don't know that IRQ 2 is really
301 * IRQ 9, or don't know which one to set.
307 /* Polled operation requested. Although irq of zero passed as
308 * a parameter tells the init routines to probe, we'll
309 * overload it to denote polled operation at runtime.
319 /* Reserve any actual interrupt. */
321 retval
= request_irq(dev
->irq
, &cops_interrupt
, 0, dev
->name
, dev
);
326 dev
->base_addr
= ioaddr
;
328 lp
= netdev_priv(dev
);
329 spin_lock_init(&lp
->lock
);
331 /* Copy local board variable to lp struct. */
334 dev
->hard_start_xmit
= cops_send_packet
;
335 dev
->tx_timeout
= cops_timeout
;
336 dev
->watchdog_timeo
= HZ
* 2;
338 dev
->open
= cops_open
;
339 dev
->stop
= cops_close
;
340 dev
->do_ioctl
= cops_ioctl
;
341 dev
->set_multicast_list
= set_multicast_list
;
344 /* Tell the user where the card is and what mode we're in. */
346 printk("%s: %s at %#3x, using IRQ %d, in Dayna mode.\n",
347 dev
->name
, cardname
, ioaddr
, dev
->irq
);
350 printk("%s: %s at %#3x, IRQ %d, in Tangent mode\n",
351 dev
->name
, cardname
, ioaddr
, dev
->irq
);
353 printk("%s: %s at %#3x, using polled IO, in Tangent mode.\n",
354 dev
->name
, cardname
, ioaddr
);
360 release_region(ioaddr
, COPS_IO_EXTENT
);
364 static int __init
cops_irq (int ioaddr
, int board
)
366 * This does not use the IRQ to determine where the IRQ is. We just
367 * assume that when we get a correct status response that it's the IRQ.
368 * This really just verifies the IO port but since we only have access
369 * to such a small number of IRQs (5, 4, 3) this is not bad.
370 * This will probably not work for more than one card.
377 outb(0, ioaddr
+DAYNA_RESET
);
378 inb(ioaddr
+DAYNA_RESET
);
385 outb(0, ioaddr
+TANG_RESET
);
388 for(i
=0; cops_irqlist
[i
] !=0; i
++)
390 irqaddr
= cops_irqlist
[i
];
391 for(x
= 0xFFFF; x
>0; x
--) /* wait for response */
395 status
= (inb(ioaddr
+DAYNA_CARD_STATUS
)&3);
401 if((inb(ioaddr
+TANG_CARD_STATUS
)& TANG_TX_READY
) !=0)
406 return 0; /* no IRQ found */
410 * Open/initialize the board. This is called (in the current kernel)
411 * sometime after booting when the 'ifconfig' program is run.
413 static int cops_open(struct net_device
*dev
)
415 struct cops_local
*lp
= netdev_priv(dev
);
420 * I don't know if the Dayna-style boards support polled
421 * operation. For now, only allow it for Tangent.
423 if(lp
->board
==TANGENT
) /* Poll 20 times per second */
425 init_timer(&cops_timer
);
426 cops_timer
.function
= cops_poll
;
427 cops_timer
.data
= (unsigned long)dev
;
428 cops_timer
.expires
= jiffies
+ HZ
/20;
429 add_timer(&cops_timer
);
433 printk(KERN_WARNING
"%s: No irq line set\n", dev
->name
);
438 cops_jumpstart(dev
); /* Start the card up. */
440 netif_start_queue(dev
);
445 * This allows for a dynamic start/restart of the entire card.
447 static int cops_jumpstart(struct net_device
*dev
)
449 struct cops_local
*lp
= netdev_priv(dev
);
452 * Once the card has the firmware loaded and has acquired
453 * the nodeid, if it is reset it will lose it all.
455 cops_reset(dev
,1); /* Need to reset card before load firmware. */
456 cops_load(dev
); /* Load the firmware. */
459 * If atalkd already gave us a nodeid we will use that
460 * one again, else we wait for atalkd to give us a nodeid
461 * in cops_ioctl. This may cause a problem if someone steals
462 * our nodeid while we are resetting.
465 cops_nodeid(dev
,lp
->node_acquire
);
470 static void tangent_wait_reset(int ioaddr
)
474 while(timeout
++ < 5 && (inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
475 mdelay(1); /* Wait 1 second */
479 * Reset the LocalTalk board.
481 static void cops_reset(struct net_device
*dev
, int sleep
)
483 struct cops_local
*lp
= netdev_priv(dev
);
484 int ioaddr
=dev
->base_addr
;
486 if(lp
->board
==TANGENT
)
488 inb(ioaddr
); /* Clear request latch. */
489 outb(0,ioaddr
); /* Clear the TANG_TX_READY flop. */
490 outb(0, ioaddr
+TANG_RESET
); /* Reset the adapter. */
492 tangent_wait_reset(ioaddr
);
493 outb(0, ioaddr
+TANG_CLEAR_INT
);
497 outb(0, ioaddr
+DAYNA_RESET
); /* Assert the reset port */
498 inb(ioaddr
+DAYNA_RESET
); /* Clear the reset */
505 netif_wake_queue(dev
);
508 static void cops_load (struct net_device
*dev
)
511 struct ltfirmware
*ltf
= (struct ltfirmware
*)&ifr
.ifr_ifru
;
512 struct cops_local
*lp
= netdev_priv(dev
);
513 int ioaddr
=dev
->base_addr
;
516 strcpy(ifr
.ifr_name
,"lt0");
518 /* Get card's firmware code and do some checks on it. */
519 #ifdef CONFIG_COPS_DAYNA
522 ltf
->length
=sizeof(ffdrv_code
);
523 ltf
->data
=ffdrv_code
;
527 #ifdef CONFIG_COPS_TANGENT
528 if(lp
->board
==TANGENT
)
530 ltf
->length
=sizeof(ltdrv_code
);
531 ltf
->data
=ltdrv_code
;
536 printk(KERN_INFO
"%s; unsupported board type.\n", dev
->name
);
540 /* Check to make sure firmware is correct length. */
541 if(lp
->board
==DAYNA
&& ltf
->length
!=5983)
543 printk(KERN_WARNING
"%s: Firmware is not length of FFDRV.BIN.\n", dev
->name
);
546 if(lp
->board
==TANGENT
&& ltf
->length
!=2501)
548 printk(KERN_WARNING
"%s: Firmware is not length of DRVCODE.BIN.\n", dev
->name
);
555 * We must wait for a status response
556 * with the DAYNA board.
560 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&3)==1)
569 * Upload the firmware and kick. Byte-by-byte works nicely here.
572 length
= ltf
->length
;
575 outb(ltf
->data
[i
], ioaddr
);
580 printk("%s: Uploaded firmware - %d bytes of %d bytes.\n",
581 dev
->name
, i
, ltf
->length
);
583 if(lp
->board
==DAYNA
) /* Tell Dayna to run the firmware code. */
584 outb(1, ioaddr
+DAYNA_INT_CARD
);
585 else /* Tell Tang to run the firmware code. */
588 if(lp
->board
==TANGENT
)
590 tangent_wait_reset(ioaddr
);
591 inb(ioaddr
); /* Clear initial ready signal. */
598 * Get the LocalTalk Nodeid from the card. We can suggest
599 * any nodeid 1-254. The card will try and get that exact
600 * address else we can specify 0 as the nodeid and the card
601 * will autoprobe for a nodeid.
603 static int cops_nodeid (struct net_device
*dev
, int nodeid
)
605 struct cops_local
*lp
= netdev_priv(dev
);
606 int ioaddr
= dev
->base_addr
;
608 if(lp
->board
== DAYNA
)
610 /* Empty any pending adapter responses. */
611 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
613 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupts. */
614 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
615 cops_rx(dev
); /* Kick any packets waiting. */
619 outb(2, ioaddr
); /* Output command packet length as 2. */
621 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT command byte. */
622 outb(nodeid
, ioaddr
); /* Suggest node address. */
625 if(lp
->board
== TANGENT
)
627 /* Empty any pending adapter responses. */
628 while(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
630 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupt. */
631 cops_rx(dev
); /* Kick out packets waiting. */
635 /* Not sure what Tangent does if nodeid picked is used. */
636 if(nodeid
== 0) /* Seed. */
637 nodeid
= jiffies
&0xFF; /* Get a random try */
638 outb(2, ioaddr
); /* Command length LSB */
639 outb(0, ioaddr
); /* Command length MSB */
640 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT byte */
641 outb(nodeid
, ioaddr
); /* LAP address hint. */
642 outb(0xFF, ioaddr
); /* Int. level to use */
645 lp
->node_acquire
=0; /* Set nodeid holder to 0. */
646 while(lp
->node_acquire
==0) /* Get *True* nodeid finally. */
648 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear any interrupt. */
650 if(lp
->board
== DAYNA
)
652 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
653 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
655 if(lp
->board
== TANGENT
)
657 if(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
658 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
664 printk(KERN_DEBUG
"%s: Node ID %d has been acquired.\n",
665 dev
->name
, lp
->node_acquire
);
667 lp
->nodeid
=1; /* Set got nodeid to 1. */
673 * Poll the Tangent type cards to see if we have work.
676 static void cops_poll(unsigned long ltdev
)
681 struct net_device
*dev
= (struct net_device
*)ltdev
;
683 del_timer(&cops_timer
);
686 return; /* We've been downed */
688 ioaddr
= dev
->base_addr
;
690 status
=inb(ioaddr
+TANG_CARD_STATUS
);
691 if(status
& TANG_RX_READY
)
693 if(status
& TANG_TX_READY
)
694 netif_wake_queue(dev
);
695 status
= inb(ioaddr
+TANG_CARD_STATUS
);
696 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
698 /* poll 20 times per second */
699 cops_timer
.expires
= jiffies
+ HZ
/20;
700 add_timer(&cops_timer
);
706 * The typical workload of the driver:
707 * Handle the network interface interrupts.
709 static irqreturn_t
cops_interrupt(int irq
, void *dev_id
)
711 struct net_device
*dev
= dev_id
;
712 struct cops_local
*lp
;
716 ioaddr
= dev
->base_addr
;
717 lp
= netdev_priv(dev
);
722 outb(0, ioaddr
+ COPS_CLEAR_INT
);
723 status
=inb(ioaddr
+DAYNA_CARD_STATUS
);
724 if((status
&0x03)==DAYNA_RX_REQUEST
)
726 netif_wake_queue(dev
);
727 } while(++boguscount
< 20);
732 status
=inb(ioaddr
+TANG_CARD_STATUS
);
733 if(status
& TANG_RX_READY
)
735 if(status
& TANG_TX_READY
)
736 netif_wake_queue(dev
);
737 status
=inb(ioaddr
+TANG_CARD_STATUS
);
738 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
745 * We have a good packet(s), get it/them out of the buffers.
747 static void cops_rx(struct net_device
*dev
)
751 struct sk_buff
*skb
= NULL
;
752 struct cops_local
*lp
= netdev_priv(dev
);
753 int ioaddr
= dev
->base_addr
;
758 spin_lock_irqsave(&lp
->lock
, flags
);
762 outb(0, ioaddr
); /* Send out Zero length. */
764 outb(DATA_READ
, ioaddr
); /* Send read command out. */
766 /* Wait for DMA to turn around. */
767 while(++boguscount
<1000000)
770 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_READY
)
774 if(boguscount
==1000000)
776 printk(KERN_WARNING
"%s: DMA timed out.\n",dev
->name
);
777 spin_unlock_irqrestore(&lp
->lock
, flags
);
782 /* Get response length. */
784 pkt_len
= inb(ioaddr
) & 0xFF;
786 pkt_len
= inb(ioaddr
) & 0x00FF;
787 pkt_len
|= (inb(ioaddr
) << 8);
789 rsp_type
=inb(ioaddr
);
791 /* Malloc up new buffer. */
792 skb
= dev_alloc_skb(pkt_len
);
795 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet.\n",
797 dev
->stats
.rx_dropped
++;
798 while(pkt_len
--) /* Discard packet */
800 spin_unlock_irqrestore(&lp
->lock
, flags
);
804 skb_put(skb
, pkt_len
);
805 skb
->protocol
= htons(ETH_P_LOCALTALK
);
807 insb(ioaddr
, skb
->data
, pkt_len
); /* Eat the Data */
810 outb(1, ioaddr
+DAYNA_INT_CARD
); /* Interrupt the card */
812 spin_unlock_irqrestore(&lp
->lock
, flags
); /* Restore interrupts. */
814 /* Check for bad response length */
815 if(pkt_len
< 0 || pkt_len
> MAX_LLAP_SIZE
)
817 printk(KERN_WARNING
"%s: Bad packet length of %d bytes.\n",
819 dev
->stats
.tx_errors
++;
820 dev_kfree_skb_any(skb
);
824 /* Set nodeid and then get out. */
825 if(rsp_type
== LAP_INIT_RSP
)
826 { /* Nodeid taken from received packet. */
827 lp
->node_acquire
= skb
->data
[0];
828 dev_kfree_skb_any(skb
);
832 /* One last check to make sure we have a good packet. */
833 if(rsp_type
!= LAP_RESPONSE
)
835 printk(KERN_WARNING
"%s: Bad packet type %d.\n", dev
->name
, rsp_type
);
836 dev
->stats
.tx_errors
++;
837 dev_kfree_skb_any(skb
);
841 skb_reset_mac_header(skb
); /* Point to entire packet. */
843 skb_reset_transport_header(skb
); /* Point to data (Skip header). */
845 /* Update the counters. */
846 dev
->stats
.rx_packets
++;
847 dev
->stats
.rx_bytes
+= skb
->len
;
849 /* Send packet to a higher place. */
853 static void cops_timeout(struct net_device
*dev
)
855 struct cops_local
*lp
= netdev_priv(dev
);
856 int ioaddr
= dev
->base_addr
;
858 dev
->stats
.tx_errors
++;
859 if(lp
->board
==TANGENT
)
861 if((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
862 printk(KERN_WARNING
"%s: No TX complete interrupt.\n", dev
->name
);
864 printk(KERN_WARNING
"%s: Transmit timed out.\n", dev
->name
);
865 cops_jumpstart(dev
); /* Restart the card. */
866 dev
->trans_start
= jiffies
;
867 netif_wake_queue(dev
);
872 * Make the card transmit a LocalTalk packet.
875 static int cops_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
877 struct cops_local
*lp
= netdev_priv(dev
);
878 int ioaddr
= dev
->base_addr
;
882 * Block a timer-based transmit from overlapping.
885 netif_stop_queue(dev
);
887 spin_lock_irqsave(&lp
->lock
, flags
);
888 if(lp
->board
== DAYNA
) /* Wait for adapter transmit buffer. */
889 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
891 if(lp
->board
== TANGENT
) /* Wait for adapter transmit buffer. */
892 while((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
895 /* Output IO length. */
896 outb(skb
->len
, ioaddr
);
897 if(lp
->board
== DAYNA
)
898 outb(skb
->len
>> 8, ioaddr
);
900 outb((skb
->len
>> 8)&0x0FF, ioaddr
);
902 /* Output IO code. */
903 outb(LAP_WRITE
, ioaddr
);
905 if(lp
->board
== DAYNA
) /* Check the transmit buffer again. */
906 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0);
908 outsb(ioaddr
, skb
->data
, skb
->len
); /* Send out the data. */
910 if(lp
->board
==DAYNA
) /* Dayna requires you kick the card */
911 outb(1, ioaddr
+DAYNA_INT_CARD
);
913 spin_unlock_irqrestore(&lp
->lock
, flags
); /* Restore interrupts. */
915 /* Done sending packet, update counters and cleanup. */
916 dev
->stats
.tx_packets
++;
917 dev
->stats
.tx_bytes
+= skb
->len
;
918 dev
->trans_start
= jiffies
;
924 * Dummy function to keep the Appletalk layer happy.
927 static void set_multicast_list(struct net_device
*dev
)
930 printk("%s: set_multicast_list executed\n", dev
->name
);
934 * System ioctls for the COPS LocalTalk card.
937 static int cops_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
939 struct cops_local
*lp
= netdev_priv(dev
);
940 struct sockaddr_at
*sa
= (struct sockaddr_at
*)&ifr
->ifr_addr
;
941 struct atalk_addr
*aa
= (struct atalk_addr
*)&lp
->node_addr
;
946 /* Get and set the nodeid and network # atalkd wants. */
947 cops_nodeid(dev
, sa
->sat_addr
.s_node
);
948 aa
->s_net
= sa
->sat_addr
.s_net
;
949 aa
->s_node
= lp
->node_acquire
;
951 /* Set broardcast address. */
952 dev
->broadcast
[0] = 0xFF;
954 /* Set hardware address. */
955 dev
->dev_addr
[0] = aa
->s_node
;
960 sa
->sat_addr
.s_net
= aa
->s_net
;
961 sa
->sat_addr
.s_node
= aa
->s_node
;
970 * The inverse routine to cops_open().
973 static int cops_close(struct net_device
*dev
)
975 struct cops_local
*lp
= netdev_priv(dev
);
977 /* If we were running polled, yank the timer.
979 if(lp
->board
==TANGENT
&& dev
->irq
==0)
980 del_timer(&cops_timer
);
982 netif_stop_queue(dev
);
988 static struct net_device
*cops_dev
;
990 MODULE_LICENSE("GPL");
991 module_param(io
, int, 0);
992 module_param(irq
, int, 0);
993 module_param(board_type
, int, 0);
995 static int __init
cops_module_init(void)
998 printk(KERN_WARNING
"%s: You shouldn't autoprobe with insmod\n",
1000 cops_dev
= cops_probe(-1);
1001 if (IS_ERR(cops_dev
))
1002 return PTR_ERR(cops_dev
);
1006 static void __exit
cops_module_exit(void)
1008 unregister_netdev(cops_dev
);
1009 cleanup_card(cops_dev
);
1010 free_netdev(cops_dev
);
1012 module_init(cops_module_init
);
1013 module_exit(cops_module_exit
);