1 /* cops.c: LocalTalk driver for Linux.
4 * - Jay Schulist <jschlst@turbolinux.com>
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 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@turbolinux.com>\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/version.h>
55 #include <linux/kernel.h>
56 #include <linux/sched.h>
57 #include <linux/types.h>
58 #include <linux/fcntl.h>
59 #include <linux/interrupt.h>
60 #include <linux/ptrace.h>
61 #include <linux/ioport.h>
63 #include <linux/malloc.h>
64 #include <linux/string.h>
65 #include <asm/system.h>
66 #include <asm/bitops.h>
69 #include <linux/errno.h>
70 #include <linux/init.h>
72 #include <linux/netdevice.h>
73 #include <linux/etherdevice.h>
74 #include <linux/skbuff.h>
76 #include <linux/if_arp.h>
77 #include <linux/if_ltalk.h> /* For ltalk_setup() */
78 #include <linux/delay.h> /* For udelay() */
79 #include <linux/atalk.h>
81 #include "cops.h" /* Our Stuff */
82 #include "cops_ltdrv.h" /* Firmware code for Tangent type cards. */
83 #include "cops_ffdrv.h" /* Firmware code for Dayna type cards. */
86 * The name of the card. Is used for messages and in the requests for
87 * io regions, irqs and dma channels
90 static const char *cardname
= "cops";
92 #ifdef CONFIG_COPS_DAYNA
93 static int board_type
= DAYNA
; /* Module exported */
95 static int board_type
= TANGENT
;
99 static int io
= 0x240; /* Default IO for Dayna */
100 static int irq
= 5; /* Default IRQ */
102 static int io
= 0; /* Default IO for Dayna */
103 static int irq
= 0; /* Default IRQ */
107 * COPS Autoprobe information.
108 * Right now if port address is right but IRQ is not 5 this will
109 * return a 5 no matter what since we will still get a status response.
110 * Need one more additional check to narrow down after we have gotten
111 * the ioaddr. But since only other possible IRQs is 3 and 4 so no real
112 * hurry on this. I *STRONGLY* recommend using IRQ 5 for your card with
115 * This driver has 2 modes and they are: Dayna mode and Tangent mode.
116 * Each mode corresponds with the type of card. It has been found
117 * that there are 2 main types of cards and all other cards are
118 * the same and just have different names or only have minor differences
119 * such as more IO ports. As this driver is tested it will
120 * become more clear on exactly what cards are supported. The driver
121 * defaults to using Dayna mode. To change the drivers mode, simply
122 * select Dayna or Tangent mode when configuring the kernel.
124 * This driver should support:
125 * TANGENT driver mode:
126 * Tangent ATB-II, Novell NL-1000, Daystar Digital LT-200,
129 * Dayna DL2000/DaynaTalk PC (Half Length), COPS LT-95,
130 * Farallon PhoneNET PC III, Farallon PhoneNET PC II
131 * Other cards possibly supported mode unkown though:
132 * Dayna DL2000 (Full length), COPS LT/M (Micro-Channel)
134 * Cards NOT supported by this driver but supported by the ltpc.c
135 * driver written by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
136 * Farallon PhoneNET PC
137 * Original Apple LocalTalk PC card
141 * The Daystar Digital LT200 boards do not support interrupt-driven
142 * IO. You must specify 'irq=0xff' as a module parameter to invoke
143 * polled mode. I also believe that the port probing logic is quite
144 * dangerous at best and certainly hopeless for a polled card. Best to
145 * specify both. - Steve H.
150 * Zero terminated list of IO ports to probe.
153 static unsigned int cops_portlist
[] = {
154 0x240, 0x340, 0x200, 0x210, 0x220, 0x230, 0x260,
155 0x2A0, 0x300, 0x310, 0x320, 0x330, 0x350, 0x360,
160 * Zero terminated list of IRQ ports to probe.
163 static int cops_irqlist
[] = {
167 static struct timer_list cops_timer
;
169 /* use 0 for production, 1 for verification, 2 for debug, 3 for verbose debug */
173 static unsigned int cops_debug
= COPS_DEBUG
;
175 /* The number of low I/O ports used by the card. */
176 #define COPS_IO_EXTENT 8
178 /* Information that needs to be kept for each board. */
182 struct net_device_stats stats
;
183 int board
; /* Holds what board type is. */
184 int nodeid
; /* Set to 1 once have nodeid. */
185 unsigned char node_acquire
; /* Node ID when acquired. */
186 struct at_addr node_addr
; /* Full node addres */
189 /* Index to functions, as function prototypes. */
190 extern int cops_probe (struct net_device
*dev
);
191 static int cops_probe1 (struct net_device
*dev
, int ioaddr
);
192 static int cops_irq (int ioaddr
, int board
);
194 static int cops_open (struct net_device
*dev
);
195 static int cops_jumpstart (struct net_device
*dev
);
196 static void cops_reset (struct net_device
*dev
, int sleep
);
197 static void cops_load (struct net_device
*dev
);
198 static int cops_nodeid (struct net_device
*dev
, int nodeid
);
200 static void cops_interrupt (int irq
, void *dev_id
, struct pt_regs
*regs
);
201 static void cops_poll (unsigned long ltdev
);
202 static void cops_timeout(struct net_device
*dev
);
203 static void cops_rx (struct net_device
*dev
);
204 static int cops_send_packet (struct sk_buff
*skb
, struct net_device
*dev
);
205 static void set_multicast_list (struct net_device
*dev
);
206 static int cops_hard_header (struct sk_buff
*skb
, struct net_device
*dev
,
207 unsigned short type
, void *daddr
, void *saddr
,
210 static int cops_ioctl (struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
211 static int cops_close (struct net_device
*dev
);
212 static struct net_device_stats
*cops_get_stats (struct net_device
*dev
);
216 * Check for a network adaptor of this type, and return '0' iff one exists.
217 * If dev->base_addr == 0, probe all likely locations.
218 * If dev->base_addr in [1..0x1ff], always return failure.
219 * otherwise go with what we pass in.
221 int __init
cops_probe(struct net_device
*dev
)
224 int base_addr
= dev
? dev
->base_addr
: 0;
226 if(base_addr
== 0 && io
)
229 if(base_addr
> 0x1ff) /* Check a single specified location. */
230 return cops_probe1(dev
, base_addr
);
231 else if(base_addr
!= 0) /* Don't probe at all. */
234 /* FIXME Does this really work for cards which generate irq?
235 * It's definitely N.G. for polled Tangent. sh
236 * Dayna cards don't autoprobe well at all, but if your card is
237 * at IRQ 5 & IO 0x240 we find it every time. ;) JS
239 for(i
=0; cops_portlist
[i
]; i
++) {
240 int ioaddr
= cops_portlist
[i
];
241 if(check_region(ioaddr
, COPS_IO_EXTENT
))
243 if(cops_probe1(dev
, ioaddr
) == 0)
251 * This is the real probe routine. Linux has a history of friendly device
252 * probes on the ISA bus. A good device probes avoids doing writes, and
253 * verifies that the correct device exists and functions.
255 static int __init
cops_probe1(struct net_device
*dev
, int ioaddr
)
257 struct cops_local
*lp
;
258 static unsigned version_printed
= 0;
260 int board
= board_type
;
262 if(cops_debug
&& version_printed
++ == 0)
263 printk("%s", version
);
266 * Since this board has jumpered interrupts, allocate the interrupt
267 * vector now. There is no point in waiting since no other device
268 * can use the interrupt, and this marks the irq as busy. Jumpered
269 * interrupts are typically not reported by the boards, and we must
270 * used AutoIRQ to find them.
275 /* COPS AutoIRQ routine */
276 dev
->irq
= cops_irq(ioaddr
, board
);
278 return -EINVAL
; /* No IRQ found on this port */
285 /* Fixup for users that don't know that IRQ 2 is really
286 * IRQ 9, or don't know which one to set.
292 /* Polled operation requested. Although irq of zero passed as
293 * a parameter tells the init routines to probe, we'll
294 * overload it to denote polled operation at runtime.
304 /* Reserve any actual interrupt. */
305 if(dev
->irq
&& request_irq(dev
->irq
, &cops_interrupt
, 0, cardname
, dev
))
308 /* Grab the region so no one else tries to probe our ioports. */
309 request_region(ioaddr
, COPS_IO_EXTENT
, cardname
);
310 dev
->base_addr
= ioaddr
;
312 /* Initialize the private device structure. */
313 dev
->priv
= kmalloc(sizeof(struct cops_local
), GFP_KERNEL
);
314 if(dev
->priv
== NULL
)
317 lp
= (struct cops_local
*)dev
->priv
;
318 memset(lp
, 0, sizeof(struct cops_local
));
320 /* Copy local board variable to lp struct. */
323 /* Fill in the fields of the device structure with LocalTalk values. */
326 dev
->hard_start_xmit
= cops_send_packet
;
327 dev
->tx_timeout
= cops_timeout
;
328 dev
->watchdog_timeo
= HZ
* 2;
329 dev
->hard_header
= cops_hard_header
;
330 dev
->get_stats
= cops_get_stats
;
331 dev
->open
= cops_open
;
332 dev
->stop
= cops_close
;
333 dev
->do_ioctl
= cops_ioctl
;
334 dev
->set_multicast_list
= set_multicast_list
;
337 /* Tell the user where the card is and what mode we're in. */
339 printk("%s: %s at %#3x, using IRQ %d, in Dayna mode.\n",
340 dev
->name
, cardname
, ioaddr
, dev
->irq
);
343 printk("%s: %s at %#3x, IRQ %d, in Tangent mode\n",
344 dev
->name
, cardname
, ioaddr
, dev
->irq
);
346 printk("%s: %s at %#3x, using polled IO, in Tangent mode.\n",
347 dev
->name
, cardname
, ioaddr
);
353 static int __init
cops_irq (int ioaddr
, int board
)
355 * This does not use the IRQ to determine where the IRQ is. We just
356 * assume that when we get a correct status response that it's the IRQ.
357 * This really just verifies the IO port but since we only have access
358 * to such a small number of IRQs (5, 4, 3) this is not bad.
359 * This will probably not work for more than one card.
366 outb(0, ioaddr
+DAYNA_RESET
);
367 inb(ioaddr
+DAYNA_RESET
);
374 outb(0, ioaddr
+TANG_RESET
);
377 for(i
=0; cops_irqlist
[i
] !=0; i
++)
379 irqaddr
= cops_irqlist
[i
];
380 for(x
= 0xFFFF; x
>0; x
--) /* wait for response */
384 status
= (inb(ioaddr
+DAYNA_CARD_STATUS
)&3);
390 if((inb(ioaddr
+TANG_CARD_STATUS
)& TANG_TX_READY
) !=0)
395 return 0; /* no IRQ found */
399 * Open/initialize the board. This is called (in the current kernel)
400 * sometime after booting when the 'ifconfig' program is run.
402 static int cops_open(struct net_device
*dev
)
404 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
409 * I don't know if the Dayna-style boards support polled
410 * operation. For now, only allow it for Tangent.
412 if(lp
->board
==TANGENT
) /* Poll 20 times per second */
414 init_timer(&cops_timer
);
415 cops_timer
.function
= cops_poll
;
416 cops_timer
.data
= (unsigned long)dev
;
417 cops_timer
.expires
= jiffies
+ 5;
418 add_timer(&cops_timer
);
422 printk(KERN_WARNING
"%s: No irq line set\n", dev
->name
);
427 cops_jumpstart(dev
); /* Start the card up. */
429 netif_start_queue(dev
);
438 * This allows for a dynamic start/restart of the entire card.
440 static int cops_jumpstart(struct net_device
*dev
)
442 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
445 * Once the card has the firmware loaded and has acquired
446 * the nodeid, if it is reset it will lose it all.
448 cops_reset(dev
,1); /* Need to reset card before load firmware. */
449 cops_load(dev
); /* Load the firmware. */
452 * If atalkd already gave us a nodeid we will use that
453 * one again, else we wait for atalkd to give us a nodeid
454 * in cops_ioctl. This may cause a problem if someone steals
455 * our nodeid while we are resetting.
458 cops_nodeid(dev
,lp
->node_acquire
);
463 static void tangent_wait_reset(int ioaddr
)
467 while(timeout
++ < 5 && (inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
468 mdelay(1); /* Wait 1 second */
472 * Reset the LocalTalk board.
474 static void cops_reset(struct net_device
*dev
, int sleep
)
476 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
477 int ioaddr
=dev
->base_addr
;
479 if(lp
->board
==TANGENT
)
481 inb(ioaddr
); /* Clear request latch. */
482 outb(0,ioaddr
); /* Clear the TANG_TX_READY flop. */
483 outb(0, ioaddr
+TANG_RESET
); /* Reset the adapter. */
485 tangent_wait_reset(ioaddr
);
486 outb(0, ioaddr
+TANG_CLEAR_INT
);
490 outb(0, ioaddr
+DAYNA_RESET
); /* Assert the reset port */
491 inb(ioaddr
+DAYNA_RESET
); /* Clear the reset */
496 /* Let card finish initializing, about 1/3 second */
497 while(jiffies
-snap
<HZ
/3)
503 netif_wake_queue(dev
);
507 static void cops_load (struct net_device
*dev
)
510 struct ltfirmware
*ltf
= (struct ltfirmware
*)&ifr
.ifr_data
;
511 struct cops_local
*lp
=(struct cops_local
*)dev
->priv
;
512 int ioaddr
=dev
->base_addr
;
515 strcpy(ifr
.ifr_name
,"lt0");
517 /* Get card's firmware code and do some checks on it. */
518 #ifdef CONFIG_COPS_DAYNA
521 ltf
->length
=sizeof(ffdrv_code
);
522 ltf
->data
=ffdrv_code
;
526 #ifdef CONFIG_COPS_TANGENT
527 if(lp
->board
==TANGENT
)
529 ltf
->length
=sizeof(ltdrv_code
);
530 ltf
->data
=ltdrv_code
;
535 printk(KERN_INFO
"%s; unsupported board type.\n", dev
->name
);
539 /* Check to make sure firmware is correct length. */
540 if(lp
->board
==DAYNA
&& ltf
->length
!=5983)
542 printk(KERN_WARNING
"%s: Firmware is not length of FFDRV.BIN.\n", dev
->name
);
545 if(lp
->board
==TANGENT
&& ltf
->length
!=2501)
547 printk(KERN_WARNING
"%s: Firmware is not length of DRVCODE.BIN.\n", dev
->name
);
554 * We must wait for a status response
555 * with the DAYNA board.
559 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&3)==1)
568 * Upload the firmware and kick. Byte-by-byte works nicely here.
571 length
= ltf
->length
;
574 outb(ltf
->data
[i
], ioaddr
);
579 printk("%s: Uploaded firmware - %d bytes of %d bytes.\n",
580 dev
->name
, i
, ltf
->length
);
582 if(lp
->board
==DAYNA
) /* Tell Dayna to run the firmware code. */
583 outb(1, ioaddr
+DAYNA_INT_CARD
);
584 else /* Tell Tang to run the firmware code. */
587 if(lp
->board
==TANGENT
)
589 tangent_wait_reset(ioaddr
);
590 inb(ioaddr
); /* Clear initial ready signal. */
597 * Get the LocalTalk Nodeid from the card. We can suggest
598 * any nodeid 1-254. The card will try and get that exact
599 * address else we can specify 0 as the nodeid and the card
600 * will autoprobe for a nodeid.
602 static int cops_nodeid (struct net_device
*dev
, int nodeid
)
604 struct cops_local
*lp
= (struct cops_local
*) dev
->priv
;
605 int ioaddr
= dev
->base_addr
;
607 if(lp
->board
== DAYNA
)
609 /* Empty any pending adapter responses. */
610 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
612 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupts. */
613 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
614 cops_rx(dev
); /* Kick any packets waiting. */
618 outb(2, ioaddr
); /* Output command packet length as 2. */
620 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT command byte. */
621 outb(nodeid
, ioaddr
); /* Suggest node address. */
624 if(lp
->board
== TANGENT
)
626 /* Empty any pending adapter responses. */
627 while(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
629 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupt. */
630 cops_rx(dev
); /* Kick out packets waiting. */
634 /* Not sure what Tangent does if nodeid picked is used. */
635 if(nodeid
== 0) /* Seed. */
636 nodeid
= jiffies
&0xFF; /* Get a random try */
637 outb(2, ioaddr
); /* Command length LSB */
638 outb(0, ioaddr
); /* Command length MSB */
639 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT byte */
640 outb(nodeid
, ioaddr
); /* LAP address hint. */
641 outb(0xFF, ioaddr
); /* Int. level to use */
644 lp
->node_acquire
=0; /* Set nodeid holder to 0. */
645 while(lp
->node_acquire
==0) /* Get *True* nodeid finally. */
647 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear any interrupt. */
649 if(lp
->board
== DAYNA
)
651 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
652 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
654 if(lp
->board
== TANGENT
)
656 if(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
657 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
663 printk(KERN_DEBUG
"%s: Node ID %d has been acquired.\n",
664 dev
->name
, lp
->node_acquire
);
666 lp
->nodeid
=1; /* Set got nodeid to 1. */
672 * Poll the Tangent type cards to see if we have work.
675 static void cops_poll(unsigned long ltdev
)
680 struct net_device
*dev
= (struct net_device
*)ltdev
;
682 del_timer(&cops_timer
);
685 return; /* We've been downed */
687 ioaddr
= dev
->base_addr
;
689 status
=inb(ioaddr
+TANG_CARD_STATUS
);
690 if(status
& TANG_RX_READY
)
692 if(status
& TANG_TX_READY
)
693 netif_wake_queue(dev
);
694 status
= inb(ioaddr
+TANG_CARD_STATUS
);
695 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
697 cops_timer
.expires
= jiffies
+5;
698 add_timer(&cops_timer
);
704 * The typical workload of the driver:
705 * Handle the network interface interrupts.
707 static void cops_interrupt(int irq
, void *dev_id
, struct pt_regs
* regs
)
709 struct net_device
*dev
= dev_id
;
710 struct cops_local
*lp
;
714 ioaddr
= dev
->base_addr
;
715 lp
= (struct cops_local
*)dev
->priv
;
720 outb(0, ioaddr
+ COPS_CLEAR_INT
);
721 status
=inb(ioaddr
+DAYNA_CARD_STATUS
);
722 if((status
&0x03)==DAYNA_RX_REQUEST
)
724 netif_wake_queue(dev
);
725 } while(++boguscount
< 20);
730 status
=inb(ioaddr
+TANG_CARD_STATUS
);
731 if(status
& TANG_RX_READY
)
733 if(status
& TANG_TX_READY
)
734 netif_wake_queue(dev
);
735 status
=inb(ioaddr
+TANG_CARD_STATUS
);
736 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
743 * We have a good packet(s), get it/them out of the buffers.
745 static void cops_rx(struct net_device
*dev
)
750 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
751 int ioaddr
= dev
->base_addr
;
757 cli(); /* Disable interrupts. */
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)
768 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_READY
)
772 if(boguscount
==1000000)
774 printk(KERN_WARNING
"%s: DMA timed out.\n",dev
->name
);
779 /* Get response length. */
781 pkt_len
= inb(ioaddr
) & 0xFF;
783 pkt_len
= inb(ioaddr
) & 0x00FF;
784 pkt_len
|= (inb(ioaddr
) << 8);
786 rsp_type
=inb(ioaddr
);
788 /* Malloc up new buffer. */
789 skb
= dev_alloc_skb(pkt_len
);
792 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet.\n",
794 lp
->stats
.rx_dropped
++;
795 while(pkt_len
--) /* Discard packet */
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 restore_flags(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 lp
->stats
.tx_errors
++;
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];
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 lp
->stats
.tx_errors
++;
837 skb
->mac
.raw
= skb
->data
; /* Point to entire packet. */
839 skb
->h
.raw
= skb
->data
; /* Point to data (Skip header). */
841 /* Update the counters. */
842 lp
->stats
.rx_packets
++;
843 lp
->stats
.rx_bytes
+= skb
->len
;
845 /* Send packet to a higher place. */
851 static void cops_timeout(struct net_device
*dev
)
853 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
854 int ioaddr
= dev
->base_addr
;
856 lp
->stats
.tx_errors
++;
857 if(lp
->board
==TANGENT
)
859 if((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
860 printk(KERN_WARNING
"%s: No TX complete interrupt.\n", dev
->name
);
862 printk(KERN_WARNING
"%s: Transmit timed out.\n", dev
->name
);
863 cops_jumpstart(dev
); /* Restart the card. */
864 dev
->trans_start
= jiffies
;
865 netif_wake_queue(dev
);
870 * Make the card transmit a LocalTalk packet.
873 static int cops_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
875 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
876 int ioaddr
= dev
->base_addr
;
880 * Block a timer-based transmit from overlapping.
883 netif_stop_queue(dev
);
886 cli(); /* Disable interrupts. */
887 if(lp
->board
== DAYNA
) /* Wait for adapter transmit buffer. */
888 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0);
889 if(lp
->board
== TANGENT
) /* Wait for adapter transmit buffer. */
890 while((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0);
892 /* Output IO length. */
893 outb(skb
->len
, ioaddr
);
894 if(lp
->board
== DAYNA
)
895 outb(skb
->len
>> 8, ioaddr
);
897 outb((skb
->len
>> 8)&0x0FF, ioaddr
);
899 /* Output IO code. */
900 outb(LAP_WRITE
, ioaddr
);
902 if(lp
->board
== DAYNA
) /* Check the transmit buffer again. */
903 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0);
905 outsb(ioaddr
, skb
->data
, skb
->len
); /* Send out the data. */
907 if(lp
->board
==DAYNA
) /* Dayna requires you kick the card */
908 outb(1, ioaddr
+DAYNA_INT_CARD
);
910 restore_flags(flags
); /* Restore interrupts. */
912 /* Done sending packet, update counters and cleanup. */
913 lp
->stats
.tx_packets
++;
914 lp
->stats
.tx_bytes
+= skb
->len
;
915 dev
->trans_start
= jiffies
;
921 * Dummy function to keep the Appletalk layer happy.
924 static void set_multicast_list(struct net_device
*dev
)
927 printk("%s: set_multicast_list executed\n", dev
->name
);
931 * Another Dummy function to keep the Appletalk layer happy.
934 static int cops_hard_header(struct sk_buff
*skb
, struct net_device
*dev
,
935 unsigned short type
, void *daddr
, void *saddr
,
939 printk("%s: cops_hard_header executed. Wow!\n", dev
->name
);
944 * System ioctls for the COPS LocalTalk card.
947 static int cops_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
949 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
950 struct sockaddr_at
*sa
=(struct sockaddr_at
*)&ifr
->ifr_addr
;
951 struct at_addr
*aa
=(struct at_addr
*)&lp
->node_addr
;
956 /* Get and set the nodeid and network # atalkd wants. */
957 cops_nodeid(dev
, sa
->sat_addr
.s_node
);
958 aa
->s_net
= sa
->sat_addr
.s_net
;
959 aa
->s_node
= lp
->node_acquire
;
961 /* Set broardcast address. */
962 dev
->broadcast
[0] = 0xFF;
964 /* Set hardware address. */
965 dev
->dev_addr
[0] = aa
->s_node
;
970 sa
->sat_addr
.s_net
= aa
->s_net
;
971 sa
->sat_addr
.s_node
= aa
->s_node
;
980 * The inverse routine to cops_open().
983 static int cops_close(struct net_device
*dev
)
985 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
987 /* If we were running polled, yank the timer.
989 if(lp
->board
==TANGENT
&& dev
->irq
==0)
990 del_timer(&cops_timer
);
992 netif_stop_queue(dev
);
1001 * Get the current statistics.
1002 * This may be called with the card open or closed.
1004 static struct net_device_stats
*cops_get_stats(struct net_device
*dev
)
1006 struct cops_local
*lp
= (struct cops_local
*)dev
->priv
;
1011 static char lt_name
[16];
1013 static struct net_device cops0_dev
=
1015 lt_name
, /* device name */
1017 0x0, 0, /* I/O address, IRQ */
1018 0, 0, 0, NULL
, cops_probe
1022 MODULE_PARM(io
, "i");
1023 MODULE_PARM(irq
, "i");
1024 MODULE_PARM(board_type
, "i");
1026 int init_module(void)
1031 printk(KERN_WARNING
"%s: You shouldn't autoprobe with insmod\n",
1034 /* Copy the parameters from insmod into the device structure. */
1035 cops0_dev
.base_addr
= io
;
1036 cops0_dev
.irq
= irq
;
1038 err
=dev_alloc_name(&cops0_dev
, "lt%d");
1042 if((result
= register_netdev(&cops0_dev
)) != 0)
1048 void cleanup_module(void)
1050 /* No need to check MOD_IN_USE, as sys_delete_module() checks. */
1051 unregister_netdev(&cops0_dev
);
1053 kfree_s(cops0_dev
.priv
, sizeof(struct cops_local
));
1055 free_irq(cops0_dev
.irq
, &cops0_dev
);
1056 release_region(cops0_dev
.base_addr
, COPS_IO_EXTENT
);
1062 * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O2 -c cops.c"
1064 * c-file-offsets: ((substatement-open . 0))