1 /*======================================================================
3 A PCMCIA ethernet driver for the 3com 3c589 card.
5 Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
7 3c589_cs.c 1.162 2001/10/13 00:08:50
9 The network driver code is based on Donald Becker's 3c589 code:
11 Written 1994 by Donald Becker.
12 Copyright 1993 United States Government as represented by the
13 Director, National Security Agency. This software may be used and
14 distributed according to the terms of the GNU General Public License,
15 incorporated herein by reference.
16 Donald Becker may be reached at becker@scyld.com
18 Updated for 2.5.x by Alan Cox <alan@redhat.com>
20 ======================================================================*/
22 #define DRV_NAME "3c589_cs"
23 #define DRV_VERSION "1.162-ac"
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/kernel.h>
28 #include <linux/ptrace.h>
29 #include <linux/slab.h>
30 #include <linux/string.h>
31 #include <linux/timer.h>
32 #include <linux/interrupt.h>
34 #include <linux/delay.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/skbuff.h>
39 #include <linux/if_arp.h>
40 #include <linux/ioport.h>
41 #include <linux/bitops.h>
43 #include <pcmcia/cs_types.h>
44 #include <pcmcia/cs.h>
45 #include <pcmcia/cistpl.h>
46 #include <pcmcia/cisreg.h>
47 #include <pcmcia/ciscode.h>
48 #include <pcmcia/ds.h>
50 #include <asm/uaccess.h>
52 #include <asm/system.h>
54 /* To minimize the size of the driver source I only define operating
55 constants if they are used several times. You'll need the manual
56 if you want to understand driver details. */
57 /* Offsets from base I/O address. */
59 #define EL3_TIMER 0x0a
61 #define EL3_STATUS 0x0e
63 #define EEPROM_READ 0x0080
64 #define EEPROM_BUSY 0x8000
66 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
68 /* The top five bits written to EL3_CMD are a command, the lower
69 11 bits are the parameter, if applicable. */
71 TotalReset
= 0<<11, SelectWindow
= 1<<11, StartCoax
= 2<<11,
72 RxDisable
= 3<<11, RxEnable
= 4<<11, RxReset
= 5<<11, RxDiscard
= 8<<11,
73 TxEnable
= 9<<11, TxDisable
= 10<<11, TxReset
= 11<<11,
74 FakeIntr
= 12<<11, AckIntr
= 13<<11, SetIntrEnb
= 14<<11,
75 SetStatusEnb
= 15<<11, SetRxFilter
= 16<<11, SetRxThreshold
= 17<<11,
76 SetTxThreshold
= 18<<11, SetTxStart
= 19<<11, StatsEnable
= 21<<11,
77 StatsDisable
= 22<<11, StopCoax
= 23<<11,
81 IntLatch
= 0x0001, AdapterFailure
= 0x0002, TxComplete
= 0x0004,
82 TxAvailable
= 0x0008, RxComplete
= 0x0010, RxEarly
= 0x0020,
83 IntReq
= 0x0040, StatsFull
= 0x0080, CmdBusy
= 0x1000
86 /* The SetRxFilter command accepts the following classes: */
88 RxStation
= 1, RxMulticast
= 2, RxBroadcast
= 4, RxProm
= 8
91 /* Register window 1 offsets, the window used in normal operation. */
94 #define RX_STATUS 0x08
95 #define TX_STATUS 0x0B
96 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
98 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
99 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
100 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
101 #define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
103 /* Time in jiffies before concluding Tx hung */
104 #define TX_TIMEOUT ((400*HZ)/1000)
109 struct net_device_stats stats
;
110 /* For transceiver monitoring */
111 struct timer_list media
;
114 unsigned long last_irq
;
118 static char *if_names
[] = { "auto", "10baseT", "10base2", "AUI" };
120 /*====================================================================*/
122 /* Module parameters */
124 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
125 MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
126 MODULE_LICENSE("GPL");
128 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
130 /* Special hook for setting if_port when module is loaded */
131 INT_MODULE_PARM(if_port
, 0);
134 INT_MODULE_PARM(pc_debug
, PCMCIA_DEBUG
);
135 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
136 static char *version
=
137 DRV_NAME
".c " DRV_VERSION
" 2001/10/13 00:08:50 (David Hinds)";
139 #define DEBUG(n, args...)
142 /*====================================================================*/
144 static void tc589_config(dev_link_t
*link
);
145 static void tc589_release(dev_link_t
*link
);
146 static int tc589_event(event_t event
, int priority
,
147 event_callback_args_t
*args
);
149 static u16
read_eeprom(kio_addr_t ioaddr
, int index
);
150 static void tc589_reset(struct net_device
*dev
);
151 static void media_check(unsigned long arg
);
152 static int el3_config(struct net_device
*dev
, struct ifmap
*map
);
153 static int el3_open(struct net_device
*dev
);
154 static int el3_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
155 static irqreturn_t
el3_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
);
156 static void update_stats(struct net_device
*dev
);
157 static struct net_device_stats
*el3_get_stats(struct net_device
*dev
);
158 static int el3_rx(struct net_device
*dev
);
159 static int el3_close(struct net_device
*dev
);
160 static void el3_tx_timeout(struct net_device
*dev
);
161 static void set_multicast_list(struct net_device
*dev
);
162 static struct ethtool_ops netdev_ethtool_ops
;
164 static dev_info_t dev_info
= "3c589_cs";
166 static dev_link_t
*tc589_attach(void);
167 static void tc589_detach(struct pcmcia_device
*p_dev
);
169 static dev_link_t
*dev_list
;
171 /*======================================================================
173 tc589_attach() creates an "instance" of the driver, allocating
174 local data structures for one device. The device is registered
177 ======================================================================*/
179 static dev_link_t
*tc589_attach(void)
181 struct el3_private
*lp
;
182 client_reg_t client_reg
;
184 struct net_device
*dev
;
187 DEBUG(0, "3c589_attach()\n");
189 /* Create new ethernet device */
190 dev
= alloc_etherdev(sizeof(struct el3_private
));
193 lp
= netdev_priv(dev
);
197 spin_lock_init(&lp
->lock
);
198 link
->io
.NumPorts1
= 16;
199 link
->io
.Attributes1
= IO_DATA_PATH_WIDTH_16
;
200 link
->irq
.Attributes
= IRQ_TYPE_EXCLUSIVE
| IRQ_HANDLE_PRESENT
;
201 link
->irq
.IRQInfo1
= IRQ_LEVEL_ID
;
202 link
->irq
.Handler
= &el3_interrupt
;
203 link
->irq
.Instance
= dev
;
204 link
->conf
.Attributes
= CONF_ENABLE_IRQ
;
206 link
->conf
.IntType
= INT_MEMORY_AND_IO
;
207 link
->conf
.ConfigIndex
= 1;
208 link
->conf
.Present
= PRESENT_OPTION
;
210 /* The EL3-specific entries in the device structure. */
211 SET_MODULE_OWNER(dev
);
212 dev
->hard_start_xmit
= &el3_start_xmit
;
213 dev
->set_config
= &el3_config
;
214 dev
->get_stats
= &el3_get_stats
;
215 dev
->set_multicast_list
= &set_multicast_list
;
216 dev
->open
= &el3_open
;
217 dev
->stop
= &el3_close
;
218 #ifdef HAVE_TX_TIMEOUT
219 dev
->tx_timeout
= el3_tx_timeout
;
220 dev
->watchdog_timeo
= TX_TIMEOUT
;
222 SET_ETHTOOL_OPS(dev
, &netdev_ethtool_ops
);
224 /* Register with Card Services */
225 link
->next
= dev_list
;
227 client_reg
.dev_info
= &dev_info
;
228 client_reg
.Version
= 0x0210;
229 client_reg
.event_callback_args
.client_data
= link
;
230 ret
= pcmcia_register_client(&link
->handle
, &client_reg
);
232 cs_error(link
->handle
, RegisterClient
, ret
);
233 tc589_detach(link
->handle
);
240 /*======================================================================
242 This deletes a driver "instance". The device is de-registered
243 with Card Services. If it has been released, all local data
244 structures are freed. Otherwise, the structures will be freed
245 when the device is released.
247 ======================================================================*/
249 static void tc589_detach(struct pcmcia_device
*p_dev
)
251 dev_link_t
*link
= dev_to_instance(p_dev
);
252 struct net_device
*dev
= link
->priv
;
255 DEBUG(0, "3c589_detach(0x%p)\n", link
);
257 /* Locate device structure */
258 for (linkp
= &dev_list
; *linkp
; linkp
= &(*linkp
)->next
)
259 if (*linkp
== link
) break;
264 unregister_netdev(dev
);
266 if (link
->state
& DEV_CONFIG
)
269 /* Unlink device structure, free bits */
274 /*======================================================================
276 tc589_config() is scheduled to run after a CARD_INSERTION event
277 is received, to configure the PCMCIA socket, and to make the
278 ethernet device available to the system.
280 ======================================================================*/
282 #define CS_CHECK(fn, ret) \
283 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
285 static void tc589_config(dev_link_t
*link
)
287 client_handle_t handle
= link
->handle
;
288 struct net_device
*dev
= link
->priv
;
289 struct el3_private
*lp
= netdev_priv(dev
);
292 u16 buf
[32], *phys_addr
;
293 int last_fn
, last_ret
, i
, j
, multi
= 0, fifo
;
295 char *ram_split
[] = {"5:3", "3:1", "1:1", "3:5"};
297 DEBUG(0, "3c589_config(0x%p)\n", link
);
299 phys_addr
= (u16
*)dev
->dev_addr
;
300 tuple
.Attributes
= 0;
301 tuple
.DesiredTuple
= CISTPL_CONFIG
;
302 CS_CHECK(GetFirstTuple
, pcmcia_get_first_tuple(handle
, &tuple
));
303 tuple
.TupleData
= (cisdata_t
*)buf
;
304 tuple
.TupleDataMax
= sizeof(buf
);
305 tuple
.TupleOffset
= 0;
306 CS_CHECK(GetTupleData
, pcmcia_get_tuple_data(handle
, &tuple
));
307 CS_CHECK(ParseTuple
, pcmcia_parse_tuple(handle
, &tuple
, &parse
));
308 link
->conf
.ConfigBase
= parse
.config
.base
;
309 link
->conf
.Present
= parse
.config
.rmask
[0];
311 /* Is this a 3c562? */
312 tuple
.DesiredTuple
= CISTPL_MANFID
;
313 tuple
.Attributes
= TUPLE_RETURN_COMMON
;
314 if ((pcmcia_get_first_tuple(handle
, &tuple
) == CS_SUCCESS
) &&
315 (pcmcia_get_tuple_data(handle
, &tuple
) == CS_SUCCESS
)) {
316 if (le16_to_cpu(buf
[0]) != MANFID_3COM
)
317 printk(KERN_INFO
"3c589_cs: hmmm, is this really a "
319 multi
= (le16_to_cpu(buf
[1]) == PRODID_3COM_3C562
);
323 link
->state
|= DEV_CONFIG
;
325 /* For the 3c562, the base address must be xx00-xx7f */
326 link
->io
.IOAddrLines
= 16;
327 for (i
= j
= 0; j
< 0x400; j
+= 0x10) {
328 if (multi
&& (j
& 0x80)) continue;
329 link
->io
.BasePort1
= j
^ 0x300;
330 i
= pcmcia_request_io(link
->handle
, &link
->io
);
331 if (i
== CS_SUCCESS
) break;
333 if (i
!= CS_SUCCESS
) {
334 cs_error(link
->handle
, RequestIO
, i
);
337 CS_CHECK(RequestIRQ
, pcmcia_request_irq(link
->handle
, &link
->irq
));
338 CS_CHECK(RequestConfiguration
, pcmcia_request_configuration(link
->handle
, &link
->conf
));
340 dev
->irq
= link
->irq
.AssignedIRQ
;
341 dev
->base_addr
= link
->io
.BasePort1
;
342 ioaddr
= dev
->base_addr
;
345 /* The 3c589 has an extra EEPROM for configuration info, including
346 the hardware address. The 3c562 puts the address in the CIS. */
347 tuple
.DesiredTuple
= 0x88;
348 if (pcmcia_get_first_tuple(handle
, &tuple
) == CS_SUCCESS
) {
349 pcmcia_get_tuple_data(handle
, &tuple
);
350 for (i
= 0; i
< 3; i
++)
351 phys_addr
[i
] = htons(buf
[i
]);
353 for (i
= 0; i
< 3; i
++)
354 phys_addr
[i
] = htons(read_eeprom(ioaddr
, i
));
355 if (phys_addr
[0] == 0x6060) {
356 printk(KERN_ERR
"3c589_cs: IO port conflict at 0x%03lx"
357 "-0x%03lx\n", dev
->base_addr
, dev
->base_addr
+15);
362 /* The address and resource configuration register aren't loaded from
363 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
364 outw(0x3f00, ioaddr
+ 8);
367 /* The if_port symbol can be set when the module is loaded */
368 if ((if_port
>= 0) && (if_port
<= 3))
369 dev
->if_port
= if_port
;
371 printk(KERN_ERR
"3c589_cs: invalid if_port requested\n");
373 link
->dev
= &lp
->node
;
374 link
->state
&= ~DEV_CONFIG_PENDING
;
375 SET_NETDEV_DEV(dev
, &handle_to_dev(handle
));
377 if (register_netdev(dev
) != 0) {
378 printk(KERN_ERR
"3c589_cs: register_netdev() failed\n");
383 strcpy(lp
->node
.dev_name
, dev
->name
);
385 printk(KERN_INFO
"%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
386 dev
->name
, (multi
? "562" : "589"), dev
->base_addr
,
388 for (i
= 0; i
< 6; i
++)
389 printk("%02X%s", dev
->dev_addr
[i
], ((i
<5) ? ":" : "\n"));
390 printk(KERN_INFO
" %dK FIFO split %s Rx:Tx, %s xcvr\n",
391 (fifo
& 7) ? 32 : 8, ram_split
[(fifo
>> 16) & 3],
392 if_names
[dev
->if_port
]);
396 cs_error(link
->handle
, last_fn
, last_ret
);
403 /*======================================================================
405 After a card is removed, tc589_release() will unregister the net
406 device, and release the PCMCIA configuration. If the device is
407 still open, this will be postponed until it is closed.
409 ======================================================================*/
411 static void tc589_release(dev_link_t
*link
)
413 DEBUG(0, "3c589_release(0x%p)\n", link
);
415 pcmcia_release_configuration(link
->handle
);
416 pcmcia_release_io(link
->handle
, &link
->io
);
417 pcmcia_release_irq(link
->handle
, &link
->irq
);
419 link
->state
&= ~DEV_CONFIG
;
422 static int tc589_suspend(struct pcmcia_device
*p_dev
)
424 dev_link_t
*link
= dev_to_instance(p_dev
);
425 struct net_device
*dev
= link
->priv
;
427 link
->state
|= DEV_SUSPEND
;
428 if (link
->state
& DEV_CONFIG
) {
430 netif_device_detach(dev
);
431 pcmcia_release_configuration(link
->handle
);
437 static int tc589_resume(struct pcmcia_device
*p_dev
)
439 dev_link_t
*link
= dev_to_instance(p_dev
);
440 struct net_device
*dev
= link
->priv
;
442 link
->state
&= ~DEV_SUSPEND
;
443 if (link
->state
& DEV_CONFIG
) {
444 pcmcia_request_configuration(link
->handle
, &link
->conf
);
447 netif_device_attach(dev
);
454 /*======================================================================
456 The card status event handler. Mostly, this schedules other
457 stuff to run after an event is received. A CARD_REMOVAL event
458 also sets some flags to discourage the net drivers from trying
459 to talk to the card any more.
461 ======================================================================*/
463 static int tc589_event(event_t event
, int priority
,
464 event_callback_args_t
*args
)
466 dev_link_t
*link
= args
->client_data
;
468 DEBUG(1, "3c589_event(0x%06x)\n", event
);
471 case CS_EVENT_CARD_INSERTION
:
472 link
->state
|= DEV_PRESENT
| DEV_CONFIG_PENDING
;
479 /*====================================================================*/
482 Use this for commands that may take time to finish
484 static void tc589_wait_for_completion(struct net_device
*dev
, int cmd
)
487 outw(cmd
, dev
->base_addr
+ EL3_CMD
);
489 if (!(inw(dev
->base_addr
+ EL3_STATUS
) & 0x1000)) break;
491 printk(KERN_WARNING
"%s: command 0x%04x did not complete!\n",
496 Read a word from the EEPROM using the regular EEPROM access register.
497 Assume that we are in register window zero.
499 static u16
read_eeprom(kio_addr_t ioaddr
, int index
)
502 outw(EEPROM_READ
+ index
, ioaddr
+ 10);
503 /* Reading the eeprom takes 162 us */
504 for (i
= 1620; i
>= 0; i
--)
505 if ((inw(ioaddr
+ 10) & EEPROM_BUSY
) == 0)
507 return inw(ioaddr
+ 12);
511 Set transceiver type, perhaps to something other than what the user
512 specified in dev->if_port.
514 static void tc589_set_xcvr(struct net_device
*dev
, int if_port
)
516 struct el3_private
*lp
= netdev_priv(dev
);
517 kio_addr_t ioaddr
= dev
->base_addr
;
521 case 0: case 1: outw(0, ioaddr
+ 6); break;
522 case 2: outw(3<<14, ioaddr
+ 6); break;
523 case 3: outw(1<<14, ioaddr
+ 6); break;
525 /* On PCMCIA, this just turns on the LED */
526 outw((if_port
== 2) ? StartCoax
: StopCoax
, ioaddr
+ EL3_CMD
);
527 /* 10baseT interface, enable link beat and jabber check. */
529 outw(MEDIA_LED
| ((if_port
< 2) ? MEDIA_TP
: 0), ioaddr
+ WN4_MEDIA
);
532 lp
->media_status
= ((dev
->if_port
== 0) ? 0x8000 : 0x4000);
534 lp
->media_status
= ((dev
->if_port
== 0) ? 0x4010 : 0x8800);
537 static void dump_status(struct net_device
*dev
)
539 kio_addr_t ioaddr
= dev
->base_addr
;
541 printk(KERN_INFO
" irq status %04x, rx status %04x, tx status "
542 "%02x tx free %04x\n", inw(ioaddr
+EL3_STATUS
),
543 inw(ioaddr
+RX_STATUS
), inb(ioaddr
+TX_STATUS
),
544 inw(ioaddr
+TX_FREE
));
546 printk(KERN_INFO
" diagnostics: fifo %04x net %04x ethernet %04x"
547 " media %04x\n", inw(ioaddr
+0x04), inw(ioaddr
+0x06),
548 inw(ioaddr
+0x08), inw(ioaddr
+0x0a));
552 /* Reset and restore all of the 3c589 registers. */
553 static void tc589_reset(struct net_device
*dev
)
555 kio_addr_t ioaddr
= dev
->base_addr
;
559 outw(0x0001, ioaddr
+ 4); /* Activate board. */
560 outw(0x3f00, ioaddr
+ 8); /* Set the IRQ line. */
562 /* Set the station address in window 2. */
564 for (i
= 0; i
< 6; i
++)
565 outb(dev
->dev_addr
[i
], ioaddr
+ i
);
567 tc589_set_xcvr(dev
, dev
->if_port
);
569 /* Switch to the stats window, and clear all stats by reading. */
570 outw(StatsDisable
, ioaddr
+ EL3_CMD
);
572 for (i
= 0; i
< 9; i
++)
577 /* Switch to register set 1 for normal use. */
580 /* Accept b-cast and phys addr only. */
581 outw(SetRxFilter
| RxStation
| RxBroadcast
, ioaddr
+ EL3_CMD
);
582 outw(StatsEnable
, ioaddr
+ EL3_CMD
); /* Turn on statistics. */
583 outw(RxEnable
, ioaddr
+ EL3_CMD
); /* Enable the receiver. */
584 outw(TxEnable
, ioaddr
+ EL3_CMD
); /* Enable transmitter. */
585 /* Allow status bits to be seen. */
586 outw(SetStatusEnb
| 0xff, ioaddr
+ EL3_CMD
);
587 /* Ack all pending events, and set active indicator mask. */
588 outw(AckIntr
| IntLatch
| TxAvailable
| RxEarly
| IntReq
,
590 outw(SetIntrEnb
| IntLatch
| TxAvailable
| RxComplete
| StatsFull
591 | AdapterFailure
, ioaddr
+ EL3_CMD
);
594 static void netdev_get_drvinfo(struct net_device
*dev
,
595 struct ethtool_drvinfo
*info
)
597 strcpy(info
->driver
, DRV_NAME
);
598 strcpy(info
->version
, DRV_VERSION
);
599 sprintf(info
->bus_info
, "PCMCIA 0x%lx", dev
->base_addr
);
603 static u32
netdev_get_msglevel(struct net_device
*dev
)
608 static void netdev_set_msglevel(struct net_device
*dev
, u32 level
)
612 #endif /* PCMCIA_DEBUG */
614 static struct ethtool_ops netdev_ethtool_ops
= {
615 .get_drvinfo
= netdev_get_drvinfo
,
617 .get_msglevel
= netdev_get_msglevel
,
618 .set_msglevel
= netdev_set_msglevel
,
619 #endif /* PCMCIA_DEBUG */
622 static int el3_config(struct net_device
*dev
, struct ifmap
*map
)
624 if ((map
->port
!= (u_char
)(-1)) && (map
->port
!= dev
->if_port
)) {
625 if (map
->port
<= 3) {
626 dev
->if_port
= map
->port
;
627 printk(KERN_INFO
"%s: switched to %s port\n",
628 dev
->name
, if_names
[dev
->if_port
]);
629 tc589_set_xcvr(dev
, dev
->if_port
);
636 static int el3_open(struct net_device
*dev
)
638 struct el3_private
*lp
= netdev_priv(dev
);
639 dev_link_t
*link
= &lp
->link
;
645 netif_start_queue(dev
);
648 init_timer(&lp
->media
);
649 lp
->media
.function
= &media_check
;
650 lp
->media
.data
= (unsigned long) dev
;
651 lp
->media
.expires
= jiffies
+ HZ
;
652 add_timer(&lp
->media
);
654 DEBUG(1, "%s: opened, status %4.4x.\n",
655 dev
->name
, inw(dev
->base_addr
+ EL3_STATUS
));
660 static void el3_tx_timeout(struct net_device
*dev
)
662 struct el3_private
*lp
= netdev_priv(dev
);
663 kio_addr_t ioaddr
= dev
->base_addr
;
665 printk(KERN_WARNING
"%s: Transmit timed out!\n", dev
->name
);
667 lp
->stats
.tx_errors
++;
668 dev
->trans_start
= jiffies
;
669 /* Issue TX_RESET and TX_START commands. */
670 tc589_wait_for_completion(dev
, TxReset
);
671 outw(TxEnable
, ioaddr
+ EL3_CMD
);
672 netif_wake_queue(dev
);
675 static void pop_tx_status(struct net_device
*dev
)
677 struct el3_private
*lp
= netdev_priv(dev
);
678 kio_addr_t ioaddr
= dev
->base_addr
;
681 /* Clear the Tx status stack. */
682 for (i
= 32; i
> 0; i
--) {
683 u_char tx_status
= inb(ioaddr
+ TX_STATUS
);
684 if (!(tx_status
& 0x84)) break;
685 /* reset transmitter on jabber error or underrun */
686 if (tx_status
& 0x30)
687 tc589_wait_for_completion(dev
, TxReset
);
688 if (tx_status
& 0x38) {
689 DEBUG(1, "%s: transmit error: status 0x%02x\n",
690 dev
->name
, tx_status
);
691 outw(TxEnable
, ioaddr
+ EL3_CMD
);
692 lp
->stats
.tx_aborted_errors
++;
694 outb(0x00, ioaddr
+ TX_STATUS
); /* Pop the status stack. */
698 static int el3_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
700 kio_addr_t ioaddr
= dev
->base_addr
;
701 struct el3_private
*priv
= netdev_priv(dev
);
703 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
704 "status %4.4x.\n", dev
->name
, (long)skb
->len
,
705 inw(ioaddr
+ EL3_STATUS
));
707 priv
->stats
.tx_bytes
+= skb
->len
;
709 /* Put out the doubleword header... */
710 outw(skb
->len
, ioaddr
+ TX_FIFO
);
711 outw(0x00, ioaddr
+ TX_FIFO
);
712 /* ... and the packet rounded to a doubleword. */
713 outsl(ioaddr
+ TX_FIFO
, skb
->data
, (skb
->len
+ 3) >> 2);
715 dev
->trans_start
= jiffies
;
716 if (inw(ioaddr
+ TX_FREE
) <= 1536) {
717 netif_stop_queue(dev
);
718 /* Interrupt us when the FIFO has room for max-sized packet. */
719 outw(SetTxThreshold
+ 1536, ioaddr
+ EL3_CMD
);
728 /* The EL3 interrupt handler. */
729 static irqreturn_t
el3_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
)
731 struct net_device
*dev
= (struct net_device
*) dev_id
;
732 struct el3_private
*lp
= netdev_priv(dev
);
735 int i
= 0, handled
= 1;
737 if (!netif_device_present(dev
))
740 ioaddr
= dev
->base_addr
;
742 DEBUG(3, "%s: interrupt, status %4.4x.\n",
743 dev
->name
, inw(ioaddr
+ EL3_STATUS
));
745 spin_lock(&lp
->lock
);
746 while ((status
= inw(ioaddr
+ EL3_STATUS
)) &
747 (IntLatch
| RxComplete
| StatsFull
)) {
748 if ((status
& 0xe000) != 0x2000) {
749 DEBUG(1, "%s: interrupt from dead card\n", dev
->name
);
754 if (status
& RxComplete
)
757 if (status
& TxAvailable
) {
758 DEBUG(3, " TX room bit was handled.\n");
759 /* There's room in the FIFO for a full-sized packet. */
760 outw(AckIntr
| TxAvailable
, ioaddr
+ EL3_CMD
);
761 netif_wake_queue(dev
);
764 if (status
& TxComplete
)
767 if (status
& (AdapterFailure
| RxEarly
| StatsFull
)) {
768 /* Handle all uncommon interrupts. */
769 if (status
& StatsFull
) /* Empty statistics. */
771 if (status
& RxEarly
) { /* Rx early is unused. */
773 outw(AckIntr
| RxEarly
, ioaddr
+ EL3_CMD
);
775 if (status
& AdapterFailure
) {
778 fifo_diag
= inw(ioaddr
+ 4);
780 printk(KERN_WARNING
"%s: adapter failure, FIFO diagnostic"
781 " register %04x.\n", dev
->name
, fifo_diag
);
782 if (fifo_diag
& 0x0400) {
784 tc589_wait_for_completion(dev
, TxReset
);
785 outw(TxEnable
, ioaddr
+ EL3_CMD
);
787 if (fifo_diag
& 0x2000) {
789 tc589_wait_for_completion(dev
, RxReset
);
790 set_multicast_list(dev
);
791 outw(RxEnable
, ioaddr
+ EL3_CMD
);
793 outw(AckIntr
| AdapterFailure
, ioaddr
+ EL3_CMD
);
798 printk(KERN_ERR
"%s: infinite loop in interrupt, "
799 "status %4.4x.\n", dev
->name
, status
);
800 /* Clear all interrupts */
801 outw(AckIntr
| 0xFF, ioaddr
+ EL3_CMD
);
804 /* Acknowledge the IRQ. */
805 outw(AckIntr
| IntReq
| IntLatch
, ioaddr
+ EL3_CMD
);
808 lp
->last_irq
= jiffies
;
809 spin_unlock(&lp
->lock
);
810 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
811 dev
->name
, inw(ioaddr
+ EL3_STATUS
));
812 return IRQ_RETVAL(handled
);
815 static void media_check(unsigned long arg
)
817 struct net_device
*dev
= (struct net_device
*)(arg
);
818 struct el3_private
*lp
= netdev_priv(dev
);
819 kio_addr_t ioaddr
= dev
->base_addr
;
823 if (!netif_device_present(dev
)) goto reschedule
;
826 /* Check for pending interrupt with expired latency timer: with
827 this, we can limp along even if the interrupt is blocked */
828 if ((inw(ioaddr
+ EL3_STATUS
) & IntLatch
) &&
829 (inb(ioaddr
+ EL3_TIMER
) == 0xff)) {
831 printk(KERN_WARNING
"%s: interrupt(s) dropped!\n", dev
->name
);
832 el3_interrupt(dev
->irq
, lp
, NULL
);
837 lp
->media
.expires
= jiffies
+ HZ
/100;
838 add_timer(&lp
->media
);
842 /* lp->lock guards the EL3 window. Window should always be 1 except
843 when the lock is held */
844 spin_lock_irqsave(&lp
->lock
, flags
);
846 media
= inw(ioaddr
+WN4_MEDIA
) & 0xc810;
848 /* Ignore collisions unless we've had no irq's recently */
849 if (jiffies
- lp
->last_irq
< HZ
) {
852 /* Try harder to detect carrier errors */
854 outw(StatsDisable
, ioaddr
+ EL3_CMD
);
855 errs
= inb(ioaddr
+ 0);
856 outw(StatsEnable
, ioaddr
+ EL3_CMD
);
857 lp
->stats
.tx_carrier_errors
+= errs
;
858 if (errs
|| (lp
->media_status
& 0x0010)) media
|= 0x0010;
861 if (media
!= lp
->media_status
) {
862 if ((media
& lp
->media_status
& 0x8000) &&
863 ((lp
->media_status
^ media
) & 0x0800))
864 printk(KERN_INFO
"%s: %s link beat\n", dev
->name
,
865 (lp
->media_status
& 0x0800 ? "lost" : "found"));
866 else if ((media
& lp
->media_status
& 0x4000) &&
867 ((lp
->media_status
^ media
) & 0x0010))
868 printk(KERN_INFO
"%s: coax cable %s\n", dev
->name
,
869 (lp
->media_status
& 0x0010 ? "ok" : "problem"));
870 if (dev
->if_port
== 0) {
871 if (media
& 0x8000) {
873 printk(KERN_INFO
"%s: flipped to 10baseT\n",
876 tc589_set_xcvr(dev
, 2);
877 } else if (media
& 0x4000) {
879 tc589_set_xcvr(dev
, 1);
881 printk(KERN_INFO
"%s: flipped to 10base2\n",
885 lp
->media_status
= media
;
889 spin_unlock_irqrestore(&lp
->lock
, flags
);
892 lp
->media
.expires
= jiffies
+ HZ
;
893 add_timer(&lp
->media
);
896 static struct net_device_stats
*el3_get_stats(struct net_device
*dev
)
898 struct el3_private
*lp
= netdev_priv(dev
);
900 dev_link_t
*link
= &lp
->link
;
903 spin_lock_irqsave(&lp
->lock
, flags
);
905 spin_unlock_irqrestore(&lp
->lock
, flags
);
911 Update statistics. We change to register window 6, so this should be run
912 single-threaded if the device is active. This is expected to be a rare
913 operation, and it's simpler for the rest of the driver to assume that
914 window 1 is always valid rather than use a special window-state variable.
916 Caller must hold the lock for this
918 static void update_stats(struct net_device
*dev
)
920 struct el3_private
*lp
= netdev_priv(dev
);
921 kio_addr_t ioaddr
= dev
->base_addr
;
923 DEBUG(2, "%s: updating the statistics.\n", dev
->name
);
924 /* Turn off statistics updates while reading. */
925 outw(StatsDisable
, ioaddr
+ EL3_CMD
);
926 /* Switch to the stats window, and read everything. */
928 lp
->stats
.tx_carrier_errors
+= inb(ioaddr
+ 0);
929 lp
->stats
.tx_heartbeat_errors
+= inb(ioaddr
+ 1);
930 /* Multiple collisions. */ inb(ioaddr
+ 2);
931 lp
->stats
.collisions
+= inb(ioaddr
+ 3);
932 lp
->stats
.tx_window_errors
+= inb(ioaddr
+ 4);
933 lp
->stats
.rx_fifo_errors
+= inb(ioaddr
+ 5);
934 lp
->stats
.tx_packets
+= inb(ioaddr
+ 6);
935 /* Rx packets */ inb(ioaddr
+ 7);
936 /* Tx deferrals */ inb(ioaddr
+ 8);
937 /* Rx octets */ inw(ioaddr
+ 10);
938 /* Tx octets */ inw(ioaddr
+ 12);
940 /* Back to window 1, and turn statistics back on. */
942 outw(StatsEnable
, ioaddr
+ EL3_CMD
);
945 static int el3_rx(struct net_device
*dev
)
947 struct el3_private
*lp
= netdev_priv(dev
);
948 kio_addr_t ioaddr
= dev
->base_addr
;
952 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
953 dev
->name
, inw(ioaddr
+EL3_STATUS
), inw(ioaddr
+RX_STATUS
));
954 while (!((rx_status
= inw(ioaddr
+ RX_STATUS
)) & 0x8000) &&
955 (--worklimit
>= 0)) {
956 if (rx_status
& 0x4000) { /* Error, update stats. */
957 short error
= rx_status
& 0x3800;
958 lp
->stats
.rx_errors
++;
960 case 0x0000: lp
->stats
.rx_over_errors
++; break;
961 case 0x0800: lp
->stats
.rx_length_errors
++; break;
962 case 0x1000: lp
->stats
.rx_frame_errors
++; break;
963 case 0x1800: lp
->stats
.rx_length_errors
++; break;
964 case 0x2000: lp
->stats
.rx_frame_errors
++; break;
965 case 0x2800: lp
->stats
.rx_crc_errors
++; break;
968 short pkt_len
= rx_status
& 0x7ff;
971 skb
= dev_alloc_skb(pkt_len
+5);
973 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
978 insl(ioaddr
+RX_FIFO
, skb_put(skb
, pkt_len
),
980 skb
->protocol
= eth_type_trans(skb
, dev
);
982 dev
->last_rx
= jiffies
;
983 lp
->stats
.rx_packets
++;
984 lp
->stats
.rx_bytes
+= pkt_len
;
986 DEBUG(1, "%s: couldn't allocate a sk_buff of"
987 " size %d.\n", dev
->name
, pkt_len
);
988 lp
->stats
.rx_dropped
++;
991 /* Pop the top of the Rx FIFO */
992 tc589_wait_for_completion(dev
, RxDiscard
);
995 printk(KERN_WARNING
"%s: too much work in el3_rx!\n", dev
->name
);
999 static void set_multicast_list(struct net_device
*dev
)
1001 struct el3_private
*lp
= netdev_priv(dev
);
1002 dev_link_t
*link
= &lp
->link
;
1003 kio_addr_t ioaddr
= dev
->base_addr
;
1004 u16 opts
= SetRxFilter
| RxStation
| RxBroadcast
;
1006 if (!(DEV_OK(link
))) return;
1007 if (dev
->flags
& IFF_PROMISC
)
1008 opts
|= RxMulticast
| RxProm
;
1009 else if (dev
->mc_count
|| (dev
->flags
& IFF_ALLMULTI
))
1010 opts
|= RxMulticast
;
1011 outw(opts
, ioaddr
+ EL3_CMD
);
1014 static int el3_close(struct net_device
*dev
)
1016 struct el3_private
*lp
= netdev_priv(dev
);
1017 dev_link_t
*link
= &lp
->link
;
1018 kio_addr_t ioaddr
= dev
->base_addr
;
1020 DEBUG(1, "%s: shutting down ethercard.\n", dev
->name
);
1023 /* Turn off statistics ASAP. We update lp->stats below. */
1024 outw(StatsDisable
, ioaddr
+ EL3_CMD
);
1026 /* Disable the receiver and transmitter. */
1027 outw(RxDisable
, ioaddr
+ EL3_CMD
);
1028 outw(TxDisable
, ioaddr
+ EL3_CMD
);
1030 if (dev
->if_port
== 2)
1031 /* Turn off thinnet power. Green! */
1032 outw(StopCoax
, ioaddr
+ EL3_CMD
);
1033 else if (dev
->if_port
== 1) {
1034 /* Disable link beat and jabber */
1036 outw(0, ioaddr
+ WN4_MEDIA
);
1039 /* Switching back to window 0 disables the IRQ. */
1041 /* But we explicitly zero the IRQ line select anyway. */
1042 outw(0x0f00, ioaddr
+ WN0_IRQ
);
1044 /* Check if the card still exists */
1045 if ((inw(ioaddr
+EL3_STATUS
) & 0xe000) == 0x2000)
1050 netif_stop_queue(dev
);
1051 del_timer_sync(&lp
->media
);
1056 static struct pcmcia_device_id tc589_ids
[] = {
1057 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
1058 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
1059 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
1060 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
1061 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
1062 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
1065 MODULE_DEVICE_TABLE(pcmcia
, tc589_ids
);
1067 static struct pcmcia_driver tc589_driver
= {
1068 .owner
= THIS_MODULE
,
1072 .attach
= tc589_attach
,
1073 .event
= tc589_event
,
1074 .remove
= tc589_detach
,
1075 .id_table
= tc589_ids
,
1076 .suspend
= tc589_suspend
,
1077 .resume
= tc589_resume
,
1080 static int __init
init_tc589(void)
1082 return pcmcia_register_driver(&tc589_driver
);
1085 static void __exit
exit_tc589(void)
1087 pcmcia_unregister_driver(&tc589_driver
);
1088 BUG_ON(dev_list
!= NULL
);
1091 module_init(init_tc589
);
1092 module_exit(exit_tc589
);