1 /* cops.c: LocalTalk driver for Linux.
4 * - Jay Schulist <jschlst@samba.org>
6 * With more than a little help from;
7 * - Alan Cox <Alan.Cox@linux.org>
10 * - skeleton.c: A network driver outline for linux.
11 * Written 1993-94 by Donald Becker.
12 * - ltpc.c: A driver for the LocalTalk PC card.
13 * Written by Bradford W. Johnson.
15 * Copyright 1993 United States Government as represented by the
16 * Director, National Security Agency.
18 * This software may be used and distributed according to the terms
19 * of the GNU General Public License, incorporated herein by reference.
22 * 19970608 Alan Cox Allowed dual card type support
23 * Can set board type in insmod
24 * Hooks for cops_setup routine
25 * (not yet implemented).
26 * 19971101 Jay Schulist Fixes for multiple lt* devices.
27 * 19980607 Steven Hirsch Fixed the badly broken support
28 * for Tangent type cards. Only
29 * tested on Daystar LT200. Some
30 * cleanup of formatting and program
31 * logic. Added emacs 'local-vars'
32 * setup for Jay's brace style.
33 * 20000211 Alan Cox Cleaned up for softnet
36 static const char *version
=
37 "cops.c:v0.04 6/7/98 Jay Schulist <jschlst@samba.org>\n";
40 * COPS Localtalk SDK. This provides almost all of the information
45 * insmod/modprobe configurable stuff.
46 * - IO Port, choose one your card supports or 0 if you dare.
47 * - IRQ, also choose one your card supports or nothing and let
48 * the driver figure it out.
51 #include <linux/module.h>
52 #include <linux/kernel.h>
53 #include <linux/types.h>
54 #include <linux/fcntl.h>
55 #include <linux/interrupt.h>
56 #include <linux/ptrace.h>
57 #include <linux/ioport.h>
59 #include <linux/slab.h>
60 #include <linux/string.h>
61 #include <linux/errno.h>
62 #include <linux/init.h>
63 #include <linux/netdevice.h>
64 #include <linux/etherdevice.h>
65 #include <linux/skbuff.h>
66 #include <linux/if_arp.h>
67 #include <linux/if_ltalk.h>
68 #include <linux/delay.h> /* For udelay() */
69 #include <linux/atalk.h>
70 #include <linux/spinlock.h>
71 #include <linux/bitops.h>
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 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
);
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_ioctl (struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
199 static int cops_close (struct net_device
*dev
);
200 static struct net_device_stats
*cops_get_stats (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
);
264 * This is the real probe routine. Linux has a history of friendly device
265 * probes on the ISA bus. A good device probes avoids doing writes, and
266 * verifies that the correct device exists and functions.
268 static int __init
cops_probe1(struct net_device
*dev
, int ioaddr
)
270 struct cops_local
*lp
;
271 static unsigned version_printed
;
272 int board
= board_type
;
275 if(cops_debug
&& version_printed
++ == 0)
276 printk("%s", version
);
278 /* Grab the region so no one else tries to probe our ioports. */
279 if (!request_region(ioaddr
, COPS_IO_EXTENT
, dev
->name
))
283 * Since this board has jumpered interrupts, allocate the interrupt
284 * vector now. There is no point in waiting since no other device
285 * can use the interrupt, and this marks the irq as busy. Jumpered
286 * interrupts are typically not reported by the boards, and we must
287 * used AutoIRQ to find them.
293 /* COPS AutoIRQ routine */
294 dev
->irq
= cops_irq(ioaddr
, board
);
297 /* No IRQ found on this port, fallthrough */
302 /* Fixup for users that don't know that IRQ 2 is really
303 * IRQ 9, or don't know which one to set.
309 /* Polled operation requested. Although irq of zero passed as
310 * a parameter tells the init routines to probe, we'll
311 * overload it to denote polled operation at runtime.
321 /* Reserve any actual interrupt. */
323 retval
= request_irq(dev
->irq
, &cops_interrupt
, 0, dev
->name
, dev
);
328 dev
->base_addr
= ioaddr
;
330 lp
= netdev_priv(dev
);
331 spin_lock_init(&lp
->lock
);
333 /* Copy local board variable to lp struct. */
336 dev
->hard_start_xmit
= cops_send_packet
;
337 dev
->tx_timeout
= cops_timeout
;
338 dev
->watchdog_timeo
= HZ
* 2;
340 dev
->get_stats
= cops_get_stats
;
341 dev
->open
= cops_open
;
342 dev
->stop
= cops_close
;
343 dev
->do_ioctl
= cops_ioctl
;
344 dev
->set_multicast_list
= set_multicast_list
;
347 /* Tell the user where the card is and what mode we're in. */
349 printk("%s: %s at %#3x, using IRQ %d, in Dayna mode.\n",
350 dev
->name
, cardname
, ioaddr
, dev
->irq
);
353 printk("%s: %s at %#3x, IRQ %d, in Tangent mode\n",
354 dev
->name
, cardname
, ioaddr
, dev
->irq
);
356 printk("%s: %s at %#3x, using polled IO, in Tangent mode.\n",
357 dev
->name
, cardname
, ioaddr
);
363 release_region(ioaddr
, COPS_IO_EXTENT
);
367 static int __init
cops_irq (int ioaddr
, int board
)
369 * This does not use the IRQ to determine where the IRQ is. We just
370 * assume that when we get a correct status response that it's the IRQ.
371 * This really just verifies the IO port but since we only have access
372 * to such a small number of IRQs (5, 4, 3) this is not bad.
373 * This will probably not work for more than one card.
380 outb(0, ioaddr
+DAYNA_RESET
);
381 inb(ioaddr
+DAYNA_RESET
);
388 outb(0, ioaddr
+TANG_RESET
);
391 for(i
=0; cops_irqlist
[i
] !=0; i
++)
393 irqaddr
= cops_irqlist
[i
];
394 for(x
= 0xFFFF; x
>0; x
--) /* wait for response */
398 status
= (inb(ioaddr
+DAYNA_CARD_STATUS
)&3);
404 if((inb(ioaddr
+TANG_CARD_STATUS
)& TANG_TX_READY
) !=0)
409 return 0; /* no IRQ found */
413 * Open/initialize the board. This is called (in the current kernel)
414 * sometime after booting when the 'ifconfig' program is run.
416 static int cops_open(struct net_device
*dev
)
418 struct cops_local
*lp
= netdev_priv(dev
);
423 * I don't know if the Dayna-style boards support polled
424 * operation. For now, only allow it for Tangent.
426 if(lp
->board
==TANGENT
) /* Poll 20 times per second */
428 init_timer(&cops_timer
);
429 cops_timer
.function
= cops_poll
;
430 cops_timer
.data
= (unsigned long)dev
;
431 cops_timer
.expires
= jiffies
+ HZ
/20;
432 add_timer(&cops_timer
);
436 printk(KERN_WARNING
"%s: No irq line set\n", dev
->name
);
441 cops_jumpstart(dev
); /* Start the card up. */
443 netif_start_queue(dev
);
448 * This allows for a dynamic start/restart of the entire card.
450 static int cops_jumpstart(struct net_device
*dev
)
452 struct cops_local
*lp
= netdev_priv(dev
);
455 * Once the card has the firmware loaded and has acquired
456 * the nodeid, if it is reset it will lose it all.
458 cops_reset(dev
,1); /* Need to reset card before load firmware. */
459 cops_load(dev
); /* Load the firmware. */
462 * If atalkd already gave us a nodeid we will use that
463 * one again, else we wait for atalkd to give us a nodeid
464 * in cops_ioctl. This may cause a problem if someone steals
465 * our nodeid while we are resetting.
468 cops_nodeid(dev
,lp
->node_acquire
);
473 static void tangent_wait_reset(int ioaddr
)
477 while(timeout
++ < 5 && (inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
478 mdelay(1); /* Wait 1 second */
482 * Reset the LocalTalk board.
484 static void cops_reset(struct net_device
*dev
, int sleep
)
486 struct cops_local
*lp
= netdev_priv(dev
);
487 int ioaddr
=dev
->base_addr
;
489 if(lp
->board
==TANGENT
)
491 inb(ioaddr
); /* Clear request latch. */
492 outb(0,ioaddr
); /* Clear the TANG_TX_READY flop. */
493 outb(0, ioaddr
+TANG_RESET
); /* Reset the adapter. */
495 tangent_wait_reset(ioaddr
);
496 outb(0, ioaddr
+TANG_CLEAR_INT
);
500 outb(0, ioaddr
+DAYNA_RESET
); /* Assert the reset port */
501 inb(ioaddr
+DAYNA_RESET
); /* Clear the reset */
506 /* Let card finish initializing, about 1/3 second */
507 while (time_before(jiffies
, snap
+ HZ
/3))
513 netif_wake_queue(dev
);
517 static void cops_load (struct net_device
*dev
)
520 struct ltfirmware
*ltf
= (struct ltfirmware
*)&ifr
.ifr_ifru
;
521 struct cops_local
*lp
= netdev_priv(dev
);
522 int ioaddr
=dev
->base_addr
;
525 strcpy(ifr
.ifr_name
,"lt0");
527 /* Get card's firmware code and do some checks on it. */
528 #ifdef CONFIG_COPS_DAYNA
531 ltf
->length
=sizeof(ffdrv_code
);
532 ltf
->data
=ffdrv_code
;
536 #ifdef CONFIG_COPS_TANGENT
537 if(lp
->board
==TANGENT
)
539 ltf
->length
=sizeof(ltdrv_code
);
540 ltf
->data
=ltdrv_code
;
545 printk(KERN_INFO
"%s; unsupported board type.\n", dev
->name
);
549 /* Check to make sure firmware is correct length. */
550 if(lp
->board
==DAYNA
&& ltf
->length
!=5983)
552 printk(KERN_WARNING
"%s: Firmware is not length of FFDRV.BIN.\n", dev
->name
);
555 if(lp
->board
==TANGENT
&& ltf
->length
!=2501)
557 printk(KERN_WARNING
"%s: Firmware is not length of DRVCODE.BIN.\n", dev
->name
);
564 * We must wait for a status response
565 * with the DAYNA board.
569 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&3)==1)
578 * Upload the firmware and kick. Byte-by-byte works nicely here.
581 length
= ltf
->length
;
584 outb(ltf
->data
[i
], ioaddr
);
589 printk("%s: Uploaded firmware - %d bytes of %d bytes.\n",
590 dev
->name
, i
, ltf
->length
);
592 if(lp
->board
==DAYNA
) /* Tell Dayna to run the firmware code. */
593 outb(1, ioaddr
+DAYNA_INT_CARD
);
594 else /* Tell Tang to run the firmware code. */
597 if(lp
->board
==TANGENT
)
599 tangent_wait_reset(ioaddr
);
600 inb(ioaddr
); /* Clear initial ready signal. */
607 * Get the LocalTalk Nodeid from the card. We can suggest
608 * any nodeid 1-254. The card will try and get that exact
609 * address else we can specify 0 as the nodeid and the card
610 * will autoprobe for a nodeid.
612 static int cops_nodeid (struct net_device
*dev
, int nodeid
)
614 struct cops_local
*lp
= netdev_priv(dev
);
615 int ioaddr
= dev
->base_addr
;
617 if(lp
->board
== DAYNA
)
619 /* Empty any pending adapter responses. */
620 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
622 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupts. */
623 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
624 cops_rx(dev
); /* Kick any packets waiting. */
628 outb(2, ioaddr
); /* Output command packet length as 2. */
630 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT command byte. */
631 outb(nodeid
, ioaddr
); /* Suggest node address. */
634 if(lp
->board
== TANGENT
)
636 /* Empty any pending adapter responses. */
637 while(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
639 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear interrupt. */
640 cops_rx(dev
); /* Kick out packets waiting. */
644 /* Not sure what Tangent does if nodeid picked is used. */
645 if(nodeid
== 0) /* Seed. */
646 nodeid
= jiffies
&0xFF; /* Get a random try */
647 outb(2, ioaddr
); /* Command length LSB */
648 outb(0, ioaddr
); /* Command length MSB */
649 outb(LAP_INIT
, ioaddr
); /* Send LAP_INIT byte */
650 outb(nodeid
, ioaddr
); /* LAP address hint. */
651 outb(0xFF, ioaddr
); /* Int. level to use */
654 lp
->node_acquire
=0; /* Set nodeid holder to 0. */
655 while(lp
->node_acquire
==0) /* Get *True* nodeid finally. */
657 outb(0, ioaddr
+COPS_CLEAR_INT
); /* Clear any interrupt. */
659 if(lp
->board
== DAYNA
)
661 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_REQUEST
)
662 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
664 if(lp
->board
== TANGENT
)
666 if(inb(ioaddr
+TANG_CARD_STATUS
)&TANG_RX_READY
)
667 cops_rx(dev
); /* Grab the nodeid put in lp->node_acquire. */
673 printk(KERN_DEBUG
"%s: Node ID %d has been acquired.\n",
674 dev
->name
, lp
->node_acquire
);
676 lp
->nodeid
=1; /* Set got nodeid to 1. */
682 * Poll the Tangent type cards to see if we have work.
685 static void cops_poll(unsigned long ltdev
)
690 struct net_device
*dev
= (struct net_device
*)ltdev
;
692 del_timer(&cops_timer
);
695 return; /* We've been downed */
697 ioaddr
= dev
->base_addr
;
699 status
=inb(ioaddr
+TANG_CARD_STATUS
);
700 if(status
& TANG_RX_READY
)
702 if(status
& TANG_TX_READY
)
703 netif_wake_queue(dev
);
704 status
= inb(ioaddr
+TANG_CARD_STATUS
);
705 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
707 /* poll 20 times per second */
708 cops_timer
.expires
= jiffies
+ HZ
/20;
709 add_timer(&cops_timer
);
715 * The typical workload of the driver:
716 * Handle the network interface interrupts.
718 static irqreturn_t
cops_interrupt(int irq
, void *dev_id
)
720 struct net_device
*dev
= dev_id
;
721 struct cops_local
*lp
;
725 ioaddr
= dev
->base_addr
;
726 lp
= netdev_priv(dev
);
731 outb(0, ioaddr
+ COPS_CLEAR_INT
);
732 status
=inb(ioaddr
+DAYNA_CARD_STATUS
);
733 if((status
&0x03)==DAYNA_RX_REQUEST
)
735 netif_wake_queue(dev
);
736 } while(++boguscount
< 20);
741 status
=inb(ioaddr
+TANG_CARD_STATUS
);
742 if(status
& TANG_RX_READY
)
744 if(status
& TANG_TX_READY
)
745 netif_wake_queue(dev
);
746 status
=inb(ioaddr
+TANG_CARD_STATUS
);
747 } while((++boguscount
< 20) && (status
&(TANG_RX_READY
|TANG_TX_READY
)));
754 * We have a good packet(s), get it/them out of the buffers.
756 static void cops_rx(struct net_device
*dev
)
760 struct sk_buff
*skb
= NULL
;
761 struct cops_local
*lp
= netdev_priv(dev
);
762 int ioaddr
= dev
->base_addr
;
767 spin_lock_irqsave(&lp
->lock
, flags
);
771 outb(0, ioaddr
); /* Send out Zero length. */
773 outb(DATA_READ
, ioaddr
); /* Send read command out. */
775 /* Wait for DMA to turn around. */
776 while(++boguscount
<1000000)
779 if((inb(ioaddr
+DAYNA_CARD_STATUS
)&0x03)==DAYNA_RX_READY
)
783 if(boguscount
==1000000)
785 printk(KERN_WARNING
"%s: DMA timed out.\n",dev
->name
);
786 spin_unlock_irqrestore(&lp
->lock
, flags
);
791 /* Get response length. */
793 pkt_len
= inb(ioaddr
) & 0xFF;
795 pkt_len
= inb(ioaddr
) & 0x00FF;
796 pkt_len
|= (inb(ioaddr
) << 8);
798 rsp_type
=inb(ioaddr
);
800 /* Malloc up new buffer. */
801 skb
= dev_alloc_skb(pkt_len
);
804 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet.\n",
806 lp
->stats
.rx_dropped
++;
807 while(pkt_len
--) /* Discard packet */
809 spin_unlock_irqrestore(&lp
->lock
, flags
);
813 skb_put(skb
, pkt_len
);
814 skb
->protocol
= htons(ETH_P_LOCALTALK
);
816 insb(ioaddr
, skb
->data
, pkt_len
); /* Eat the Data */
819 outb(1, ioaddr
+DAYNA_INT_CARD
); /* Interrupt the card */
821 spin_unlock_irqrestore(&lp
->lock
, flags
); /* Restore interrupts. */
823 /* Check for bad response length */
824 if(pkt_len
< 0 || pkt_len
> MAX_LLAP_SIZE
)
826 printk(KERN_WARNING
"%s: Bad packet length of %d bytes.\n",
828 lp
->stats
.tx_errors
++;
829 dev_kfree_skb_any(skb
);
833 /* Set nodeid and then get out. */
834 if(rsp_type
== LAP_INIT_RSP
)
835 { /* Nodeid taken from received packet. */
836 lp
->node_acquire
= skb
->data
[0];
837 dev_kfree_skb_any(skb
);
841 /* One last check to make sure we have a good packet. */
842 if(rsp_type
!= LAP_RESPONSE
)
844 printk(KERN_WARNING
"%s: Bad packet type %d.\n", dev
->name
, rsp_type
);
845 lp
->stats
.tx_errors
++;
846 dev_kfree_skb_any(skb
);
850 skb_reset_mac_header(skb
); /* Point to entire packet. */
852 skb_reset_transport_header(skb
); /* Point to data (Skip header). */
854 /* Update the counters. */
855 lp
->stats
.rx_packets
++;
856 lp
->stats
.rx_bytes
+= skb
->len
;
858 /* Send packet to a higher place. */
860 dev
->last_rx
= jiffies
;
863 static void cops_timeout(struct net_device
*dev
)
865 struct cops_local
*lp
= netdev_priv(dev
);
866 int ioaddr
= dev
->base_addr
;
868 lp
->stats
.tx_errors
++;
869 if(lp
->board
==TANGENT
)
871 if((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
872 printk(KERN_WARNING
"%s: No TX complete interrupt.\n", dev
->name
);
874 printk(KERN_WARNING
"%s: Transmit timed out.\n", dev
->name
);
875 cops_jumpstart(dev
); /* Restart the card. */
876 dev
->trans_start
= jiffies
;
877 netif_wake_queue(dev
);
882 * Make the card transmit a LocalTalk packet.
885 static int cops_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
887 struct cops_local
*lp
= netdev_priv(dev
);
888 int ioaddr
= dev
->base_addr
;
892 * Block a timer-based transmit from overlapping.
895 netif_stop_queue(dev
);
897 spin_lock_irqsave(&lp
->lock
, flags
);
898 if(lp
->board
== DAYNA
) /* Wait for adapter transmit buffer. */
899 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0)
901 if(lp
->board
== TANGENT
) /* Wait for adapter transmit buffer. */
902 while((inb(ioaddr
+TANG_CARD_STATUS
)&TANG_TX_READY
)==0)
905 /* Output IO length. */
906 outb(skb
->len
, ioaddr
);
907 if(lp
->board
== DAYNA
)
908 outb(skb
->len
>> 8, ioaddr
);
910 outb((skb
->len
>> 8)&0x0FF, ioaddr
);
912 /* Output IO code. */
913 outb(LAP_WRITE
, ioaddr
);
915 if(lp
->board
== DAYNA
) /* Check the transmit buffer again. */
916 while((inb(ioaddr
+DAYNA_CARD_STATUS
)&DAYNA_TX_READY
)==0);
918 outsb(ioaddr
, skb
->data
, skb
->len
); /* Send out the data. */
920 if(lp
->board
==DAYNA
) /* Dayna requires you kick the card */
921 outb(1, ioaddr
+DAYNA_INT_CARD
);
923 spin_unlock_irqrestore(&lp
->lock
, flags
); /* Restore interrupts. */
925 /* Done sending packet, update counters and cleanup. */
926 lp
->stats
.tx_packets
++;
927 lp
->stats
.tx_bytes
+= skb
->len
;
928 dev
->trans_start
= jiffies
;
934 * Dummy function to keep the Appletalk layer happy.
937 static void set_multicast_list(struct net_device
*dev
)
940 printk("%s: set_multicast_list executed\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
= netdev_priv(dev
);
950 struct sockaddr_at
*sa
= (struct sockaddr_at
*)&ifr
->ifr_addr
;
951 struct atalk_addr
*aa
= (struct atalk_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
= netdev_priv(dev
);
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
);
997 * Get the current statistics.
998 * This may be called with the card open or closed.
1000 static struct net_device_stats
*cops_get_stats(struct net_device
*dev
)
1002 struct cops_local
*lp
= netdev_priv(dev
);
1007 static struct net_device
*cops_dev
;
1009 MODULE_LICENSE("GPL");
1010 module_param(io
, int, 0);
1011 module_param(irq
, int, 0);
1012 module_param(board_type
, int, 0);
1014 static int __init
cops_module_init(void)
1017 printk(KERN_WARNING
"%s: You shouldn't autoprobe with insmod\n",
1019 cops_dev
= cops_probe(-1);
1020 if (IS_ERR(cops_dev
))
1021 return PTR_ERR(cops_dev
);
1025 static void __exit
cops_module_exit(void)
1027 unregister_netdev(cops_dev
);
1028 cleanup_card(cops_dev
);
1029 free_netdev(cops_dev
);
1031 module_init(cops_module_init
);
1032 module_exit(cops_module_exit
);
1037 * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O2 -c cops.c"
1039 * c-file-offsets: ((substatement-open . 0))