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/string.h>
60 #include <linux/errno.h>
61 #include <linux/init.h>
62 #include <linux/netdevice.h>
63 #include <linux/etherdevice.h>
64 #include <linux/skbuff.h>
65 #include <linux/if_arp.h>
66 #include <linux/if_ltalk.h>
67 #include <linux/delay.h> /* For udelay() */
68 #include <linux/atalk.h>
69 #include <linux/spinlock.h>
70 #include <linux/bitops.h>
71 #include <linux/jiffies.h>
73 #include <net/Space.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 unknown 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
;
160 static struct net_device
*cops_timer_dev
;
162 /* use 0 for production, 1 for verification, 2 for debug, 3 for verbose debug */
166 static unsigned int cops_debug
= COPS_DEBUG
;
168 /* The number of low I/O ports used by the card. */
169 #define COPS_IO_EXTENT 8
171 /* Information that needs to be kept for each board. */
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
);
193 static void cops_poll(struct timer_list
*t
);
194 static void cops_timeout(struct net_device
*dev
, unsigned int txqueue
);
195 static void cops_rx (struct net_device
*dev
);
196 static netdev_tx_t
cops_send_packet (struct sk_buff
*skb
,
197 struct net_device
*dev
);
198 static void set_multicast_list (struct net_device
*dev
);
199 static int cops_ioctl (struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
200 static int cops_close (struct net_device
*dev
);
202 static void cleanup_card(struct net_device
*dev
)
205 free_irq(dev
->irq
, dev
);
206 release_region(dev
->base_addr
, COPS_IO_EXTENT
);
210 * Check for a network adaptor of this type, and return '0' iff one exists.
211 * If dev->base_addr == 0, probe all likely locations.
212 * If dev->base_addr in [1..0x1ff], always return failure.
213 * otherwise go with what we pass in.
215 struct net_device
* __init
cops_probe(int unit
)
217 struct net_device
*dev
;
222 dev
= alloc_ltalkdev(sizeof(struct cops_local
));
224 return ERR_PTR(-ENOMEM
);
227 sprintf(dev
->name
, "lt%d", unit
);
228 netdev_boot_setup_check(dev
);
230 base_addr
= dev
->base_addr
;
232 base_addr
= dev
->base_addr
= io
;
235 if (base_addr
> 0x1ff) { /* Check a single specified location. */
236 err
= cops_probe1(dev
, base_addr
);
237 } else if (base_addr
!= 0) { /* Don't probe at all. */
240 /* FIXME Does this really work for cards which generate irq?
241 * It's definitely N.G. for polled Tangent. sh
242 * Dayna cards don't autoprobe well at all, but if your card is
243 * at IRQ 5 & IO 0x240 we find it every time. ;) JS
245 for (port
= ports
; *port
&& cops_probe1(dev
, *port
) < 0; port
++)
252 err
= register_netdev(dev
);
263 static const struct net_device_ops cops_netdev_ops
= {
264 .ndo_open
= cops_open
,
265 .ndo_stop
= cops_close
,
266 .ndo_start_xmit
= cops_send_packet
,
267 .ndo_tx_timeout
= cops_timeout
,
268 .ndo_do_ioctl
= cops_ioctl
,
269 .ndo_set_rx_mode
= set_multicast_list
,
273 * This is the real probe routine. Linux has a history of friendly device
274 * probes on the ISA bus. A good device probes avoids doing writes, and
275 * verifies that the correct device exists and functions.
277 static int __init
cops_probe1(struct net_device
*dev
, int ioaddr
)
279 struct cops_local
*lp
;
280 static unsigned version_printed
;
281 int board
= board_type
;
284 if(cops_debug
&& version_printed
++ == 0)
285 printk("%s", version
);
287 /* Grab the region so no one else tries to probe our ioports. */
288 if (!request_region(ioaddr
, COPS_IO_EXTENT
, dev
->name
))
292 * Since this board has jumpered interrupts, allocate the interrupt
293 * vector now. There is no point in waiting since no other device
294 * can use the interrupt, and this marks the irq as busy. Jumpered
295 * interrupts are typically not reported by the boards, and we must
296 * used AutoIRQ to find them.
302 /* COPS AutoIRQ routine */
303 dev
->irq
= cops_irq(ioaddr
, board
);
306 fallthrough
; /* Once no IRQ found on this port */
311 /* Fixup for users that don't know that IRQ 2 is really
312 * IRQ 9, or don't know which one to set.
318 /* Polled operation requested. Although irq of zero passed as
319 * a parameter tells the init routines to probe, we'll
320 * overload it to denote polled operation at runtime.
330 dev
->base_addr
= ioaddr
;
332 /* Reserve any actual interrupt. */
334 retval
= request_irq(dev
->irq
, cops_interrupt
, 0, dev
->name
, dev
);
339 lp
= netdev_priv(dev
);
340 spin_lock_init(&lp
->lock
);
342 /* Copy local board variable to lp struct. */
345 dev
->netdev_ops
= &cops_netdev_ops
;
346 dev
->watchdog_timeo
= HZ
* 2;
349 /* Tell the user where the card is and what mode we're in. */
351 printk("%s: %s at %#3x, using IRQ %d, in Dayna mode.\n",
352 dev
->name
, cardname
, ioaddr
, dev
->irq
);
355 printk("%s: %s at %#3x, IRQ %d, in Tangent mode\n",
356 dev
->name
, cardname
, ioaddr
, dev
->irq
);
358 printk("%s: %s at %#3x, using polled IO, in Tangent mode.\n",
359 dev
->name
, cardname
, ioaddr
);
365 release_region(ioaddr
, COPS_IO_EXTENT
);
369 static int __init
cops_irq (int ioaddr
, int board
)
371 * This does not use the IRQ to determine where the IRQ is. We just
372 * assume that when we get a correct status response that it's the IRQ.
373 * This really just verifies the IO port but since we only have access
374 * to such a small number of IRQs (5, 4, 3) this is not bad.
375 * This will probably not work for more than one card.
382 outb(0, ioaddr
+DAYNA_RESET
);
383 inb(ioaddr
+DAYNA_RESET
);
390 outb(0, ioaddr
+TANG_RESET
);
393 for(i
=0; cops_irqlist
[i
] !=0; i
++)
395 irqaddr
= cops_irqlist
[i
];
396 for(x
= 0xFFFF; x
>0; x
--) /* wait for response */
400 status
= (inb(ioaddr
+DAYNA_CARD_STATUS
)&3);
406 if((inb(ioaddr
+TANG_CARD_STATUS
)& TANG_TX_READY
) !=0)
411 return 0; /* no IRQ found */
415 * Open/initialize the board. This is called (in the current kernel)
416 * sometime after booting when the 'ifconfig' program is run.
418 static int cops_open(struct net_device
*dev
)
420 struct cops_local
*lp
= netdev_priv(dev
);
425 * I don't know if the Dayna-style boards support polled
426 * operation. For now, only allow it for Tangent.
428 if(lp
->board
==TANGENT
) /* Poll 20 times per second */
430 cops_timer_dev
= dev
;
431 timer_setup(&cops_timer
, cops_poll
, 0);
432 cops_timer
.expires
= jiffies
+ HZ
/20;
433 add_timer(&cops_timer
);
437 printk(KERN_WARNING
"%s: No irq line set\n", dev
->name
);
442 cops_jumpstart(dev
); /* Start the card up. */
444 netif_start_queue(dev
);
449 * This allows for a dynamic start/restart of the entire card.
451 static int cops_jumpstart(struct net_device
*dev
)
453 struct cops_local
*lp
= netdev_priv(dev
);
456 * Once the card has the firmware loaded and has acquired
457 * the nodeid, if it is reset it will lose it all.
459 cops_reset(dev
,1); /* Need to reset card before load firmware. */
460 cops_load(dev
); /* Load the firmware. */
463 * If atalkd already gave us a nodeid we will use that
464 * one again, else we wait for atalkd to give us a nodeid
465 * in cops_ioctl. This may cause a problem if someone steals
466 * our nodeid while we are resetting.
469 cops_nodeid(dev
,lp
->node_acquire
);
474 static void tangent_wait_reset(int ioaddr
)
478 while(timeout
++ < 5 && (inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
479 mdelay(1); /* Wait 1 second */
483 * Reset the LocalTalk board.
485 static void cops_reset(struct net_device
*dev
, int sleep
)
487 struct cops_local
*lp
= netdev_priv(dev
);
488 int ioaddr
=dev
->base_addr
;
490 if(lp
->board
==TANGENT
)
492 inb(ioaddr
); /* Clear request latch. */
493 outb(0,ioaddr
); /* Clear the TANG_TX_READY flop. */
494 outb(0, ioaddr
+TANG_RESET
); /* Reset the adapter. */
496 tangent_wait_reset(ioaddr
);
497 outb(0, ioaddr
+TANG_CLEAR_INT
);
501 outb(0, ioaddr
+DAYNA_RESET
); /* Assert the reset port */
502 inb(ioaddr
+DAYNA_RESET
); /* Clear the reset */
509 netif_wake_queue(dev
);
512 static void cops_load (struct net_device
*dev
)
515 struct ltfirmware
*ltf
= (struct ltfirmware
*)&ifr
.ifr_ifru
;
516 struct cops_local
*lp
= netdev_priv(dev
);
517 int ioaddr
=dev
->base_addr
;
520 strcpy(ifr
.ifr_name
,"lt0");
522 /* Get card's firmware code and do some checks on it. */
523 #ifdef CONFIG_COPS_DAYNA
526 ltf
->length
=sizeof(ffdrv_code
);
527 ltf
->data
=ffdrv_code
;
531 #ifdef CONFIG_COPS_TANGENT
532 if(lp
->board
==TANGENT
)
534 ltf
->length
=sizeof(ltdrv_code
);
535 ltf
->data
=ltdrv_code
;
540 printk(KERN_INFO
"%s; unsupported board type.\n", dev
->name
);
544 /* Check to make sure firmware is correct length. */
545 if(lp
->board
==DAYNA
&& ltf
->length
!=5983)
547 printk(KERN_WARNING
"%s: Firmware is not length of FFDRV.BIN.\n", dev
->name
);
550 if(lp
->board
==TANGENT
&& ltf
->length
!=2501)
552 printk(KERN_WARNING
"%s: Firmware is not length of DRVCODE.BIN.\n", dev
->name
);
559 * We must wait for a status response
560 * with the DAYNA board.
564 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&3)==1)
573 * Upload the firmware and kick. Byte-by-byte works nicely here.
576 length
= ltf
->length
;
579 outb(ltf
->data
[i
], ioaddr
);
584 printk("%s: Uploaded firmware - %d bytes of %d bytes.\n",
585 dev
->name
, i
, ltf
->length
);
587 if(lp
->board
==DAYNA
) /* Tell Dayna to run the firmware code. */
588 outb(1, ioaddr
+DAYNA_INT_CARD
);
589 else /* Tell Tang to run the firmware code. */
592 if(lp
->board
==TANGENT
)
594 tangent_wait_reset(ioaddr
);
595 inb(ioaddr
); /* Clear initial ready signal. */
600 * Get the LocalTalk Nodeid from the card. We can suggest
601 * any nodeid 1-254. The card will try and get that exact
602 * address else we can specify 0 as the nodeid and the card
603 * will autoprobe for a nodeid.
605 static int cops_nodeid (struct net_device
*dev
, int nodeid
)
607 struct cops_local
*lp
= netdev_priv(dev
);
608 int ioaddr
= dev
->base_addr
;
610 if(lp
->board
== DAYNA
)
612 /* Empty any pending adapter responses. */
613 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
615 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupts. */
616 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
617 cops_rx(dev
); /* Kick any packets waiting. */
621 outb(2, ioaddr
); /* Output command packet length as 2. */
623 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT command byte. */
624 outb(nodeid
, ioaddr
); /* Suggest node address. */
627 if(lp
->board
== TANGENT
)
629 /* Empty any pending adapter responses. */
630 while(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
632 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupt. */
633 cops_rx(dev
); /* Kick out packets waiting. */
637 /* Not sure what Tangent does if nodeid picked is used. */
638 if(nodeid
== 0) /* Seed. */
639 nodeid
= jiffies
&0xFF; /* Get a random try */
640 outb(2, ioaddr
); /* Command length LSB */
641 outb(0, ioaddr
); /* Command length MSB */
642 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT byte */
643 outb(nodeid
, ioaddr
); /* LAP address hint. */
644 outb(0xFF, ioaddr
); /* Int. level to use */
647 lp
->node_acquire
=0; /* Set nodeid holder to 0. */
648 while(lp
->node_acquire
==0) /* Get *True* nodeid finally. */
650 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear any interrupt. */
652 if(lp
->board
== DAYNA
)
654 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
655 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
657 if(lp
->board
== TANGENT
)
659 if(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
660 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
666 printk(KERN_DEBUG
"%s: Node ID %d has been acquired.\n",
667 dev
->name
, lp
->node_acquire
);
669 lp
->nodeid
=1; /* Set got nodeid to 1. */
675 * Poll the Tangent type cards to see if we have work.
678 static void cops_poll(struct timer_list
*unused
)
682 struct net_device
*dev
= cops_timer_dev
;
684 del_timer(&cops_timer
);
687 return; /* We've been downed */
689 ioaddr
= dev
->base_addr
;
691 status
=inb(ioaddr
+TANG_CARD_STATUS
);
692 if(status
& TANG_RX_READY
)
694 if(status
& TANG_TX_READY
)
695 netif_wake_queue(dev
);
696 status
= inb(ioaddr
+TANG_CARD_STATUS
);
697 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
699 /* poll 20 times per second */
700 cops_timer
.expires
= jiffies
+ HZ
/20;
701 add_timer(&cops_timer
);
705 * The typical workload of the driver:
706 * Handle the network interface interrupts.
708 static irqreturn_t
cops_interrupt(int irq
, void *dev_id
)
710 struct net_device
*dev
= dev_id
;
711 struct cops_local
*lp
;
715 ioaddr
= dev
->base_addr
;
716 lp
= netdev_priv(dev
);
721 outb(0, ioaddr
+ COPS_CLEAR_INT
);
722 status
=inb(ioaddr
+DAYNA_CARD_STATUS
);
723 if((status
&0x03)==DAYNA_RX_REQUEST
)
725 netif_wake_queue(dev
);
726 } while(++boguscount
< 20);
731 status
=inb(ioaddr
+TANG_CARD_STATUS
);
732 if(status
& TANG_RX_READY
)
734 if(status
& TANG_TX_READY
)
735 netif_wake_queue(dev
);
736 status
=inb(ioaddr
+TANG_CARD_STATUS
);
737 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
744 * We have a good packet(s), get it/them out of the buffers.
746 static void cops_rx(struct net_device
*dev
)
750 struct sk_buff
*skb
= NULL
;
751 struct cops_local
*lp
= netdev_priv(dev
);
752 int ioaddr
= dev
->base_addr
;
757 spin_lock_irqsave(&lp
->lock
, flags
);
761 outb(0, ioaddr
); /* Send out Zero length. */
763 outb(DATA_READ
, ioaddr
); /* Send read command out. */
765 /* Wait for DMA to turn around. */
766 while(++boguscount
<1000000)
769 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_READY
)
773 if(boguscount
==1000000)
775 printk(KERN_WARNING
"%s: DMA timed out.\n",dev
->name
);
776 spin_unlock_irqrestore(&lp
->lock
, flags
);
781 /* Get response length. */
782 pkt_len
= inb(ioaddr
);
783 pkt_len
|= (inb(ioaddr
) << 8);
785 rsp_type
=inb(ioaddr
);
787 /* Malloc up new buffer. */
788 skb
= dev_alloc_skb(pkt_len
);
791 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet.\n",
793 dev
->stats
.rx_dropped
++;
794 while(pkt_len
--) /* Discard packet */
796 spin_unlock_irqrestore(&lp
->lock
, flags
);
800 skb_put(skb
, pkt_len
);
801 skb
->protocol
= htons(ETH_P_LOCALTALK
);
803 insb(ioaddr
, skb
->data
, pkt_len
); /* Eat the Data */
806 outb(1, ioaddr
+DAYNA_INT_CARD
); /* Interrupt the card */
808 spin_unlock_irqrestore(&lp
->lock
, flags
); /* Restore interrupts. */
810 /* Check for bad response length */
811 if(pkt_len
< 0 || pkt_len
> MAX_LLAP_SIZE
)
813 printk(KERN_WARNING
"%s: Bad packet length of %d bytes.\n",
815 dev
->stats
.tx_errors
++;
816 dev_kfree_skb_any(skb
);
820 /* Set nodeid and then get out. */
821 if(rsp_type
== LAP_INIT_RSP
)
822 { /* Nodeid taken from received packet. */
823 lp
->node_acquire
= skb
->data
[0];
824 dev_kfree_skb_any(skb
);
828 /* One last check to make sure we have a good packet. */
829 if(rsp_type
!= LAP_RESPONSE
)
831 printk(KERN_WARNING
"%s: Bad packet type %d.\n", dev
->name
, rsp_type
);
832 dev
->stats
.tx_errors
++;
833 dev_kfree_skb_any(skb
);
837 skb_reset_mac_header(skb
); /* Point to entire packet. */
839 skb_reset_transport_header(skb
); /* Point to data (Skip header). */
841 /* Update the counters. */
842 dev
->stats
.rx_packets
++;
843 dev
->stats
.rx_bytes
+= skb
->len
;
845 /* Send packet to a higher place. */
849 static void cops_timeout(struct net_device
*dev
, unsigned int txqueue
)
851 struct cops_local
*lp
= netdev_priv(dev
);
852 int ioaddr
= dev
->base_addr
;
854 dev
->stats
.tx_errors
++;
855 if(lp
->board
==TANGENT
)
857 if((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
858 printk(KERN_WARNING
"%s: No TX complete interrupt.\n", dev
->name
);
860 printk(KERN_WARNING
"%s: Transmit timed out.\n", dev
->name
);
861 cops_jumpstart(dev
); /* Restart the card. */
862 netif_trans_update(dev
); /* prevent tx timeout */
863 netif_wake_queue(dev
);
868 * Make the card transmit a LocalTalk packet.
871 static netdev_tx_t
cops_send_packet(struct sk_buff
*skb
,
872 struct net_device
*dev
)
874 struct cops_local
*lp
= netdev_priv(dev
);
875 int ioaddr
= dev
->base_addr
;
879 * Block a timer-based transmit from overlapping.
882 netif_stop_queue(dev
);
884 spin_lock_irqsave(&lp
->lock
, flags
);
885 if(lp
->board
== DAYNA
) /* Wait for adapter transmit buffer. */
886 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
888 if(lp
->board
== TANGENT
) /* Wait for adapter transmit buffer. */
889 while((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
892 /* Output IO length. */
893 outb(skb
->len
, ioaddr
);
894 outb(skb
->len
>> 8, ioaddr
);
896 /* Output IO code. */
897 outb(LAP_WRITE
, ioaddr
);
899 if(lp
->board
== DAYNA
) /* Check the transmit buffer again. */
900 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0);
902 outsb(ioaddr
, skb
->data
, skb
->len
); /* Send out the data. */
904 if(lp
->board
==DAYNA
) /* Dayna requires you kick the card */
905 outb(1, ioaddr
+DAYNA_INT_CARD
);
907 spin_unlock_irqrestore(&lp
->lock
, flags
); /* Restore interrupts. */
909 /* Done sending packet, update counters and cleanup. */
910 dev
->stats
.tx_packets
++;
911 dev
->stats
.tx_bytes
+= skb
->len
;
917 * Dummy function to keep the Appletalk layer happy.
920 static void set_multicast_list(struct net_device
*dev
)
923 printk("%s: set_multicast_list executed\n", dev
->name
);
927 * System ioctls for the COPS LocalTalk card.
930 static int cops_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
932 struct cops_local
*lp
= netdev_priv(dev
);
933 struct sockaddr_at
*sa
= (struct sockaddr_at
*)&ifr
->ifr_addr
;
934 struct atalk_addr
*aa
= &lp
->node_addr
;
939 /* Get and set the nodeid and network # atalkd wants. */
940 cops_nodeid(dev
, sa
->sat_addr
.s_node
);
941 aa
->s_net
= sa
->sat_addr
.s_net
;
942 aa
->s_node
= lp
->node_acquire
;
944 /* Set broardcast address. */
945 dev
->broadcast
[0] = 0xFF;
947 /* Set hardware address. */
948 dev
->dev_addr
[0] = aa
->s_node
;
953 sa
->sat_addr
.s_net
= aa
->s_net
;
954 sa
->sat_addr
.s_node
= aa
->s_node
;
963 * The inverse routine to cops_open().
966 static int cops_close(struct net_device
*dev
)
968 struct cops_local
*lp
= netdev_priv(dev
);
970 /* If we were running polled, yank the timer.
972 if(lp
->board
==TANGENT
&& dev
->irq
==0)
973 del_timer(&cops_timer
);
975 netif_stop_queue(dev
);
981 static struct net_device
*cops_dev
;
983 MODULE_LICENSE("GPL");
984 module_param_hw(io
, int, ioport
, 0);
985 module_param_hw(irq
, int, irq
, 0);
986 module_param_hw(board_type
, int, other
, 0);
988 static int __init
cops_module_init(void)
991 printk(KERN_WARNING
"%s: You shouldn't autoprobe with insmod\n",
993 cops_dev
= cops_probe(-1);
994 return PTR_ERR_OR_ZERO(cops_dev
);
997 static void __exit
cops_module_exit(void)
999 unregister_netdev(cops_dev
);
1000 cleanup_card(cops_dev
);
1001 free_netdev(cops_dev
);
1003 module_init(cops_module_init
);
1004 module_exit(cops_module_exit
);