2 * linux/drivers/acorn/net/ether3.c
4 * Copyright (C) 1995-2000 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card
13 * By Russell King, with some suggestions from borris@ant.co.uk
16 * 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet
17 * address up to the higher levels - they're
18 * silently ignored. I/F can now be put into
19 * multicast mode. Receiver routine optimised.
20 * 1.05 RMK 30/02/1996 Now claims interrupt at open when part of
21 * the kernel rather than when a module.
22 * 1.06 RMK 02/03/1996 Various code cleanups
23 * 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit
25 * 1.08 RMK 14/10/1996 Fixed problem with too many packets,
26 * prevented the kernel message about dropped
27 * packets appearing too many times a second.
28 * Now does not disable all IRQs, only the IRQ
30 * 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low,
31 * but we still service the TX queue if we get a
33 * 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004.
34 * 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A.
35 * 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1.
36 * RMK 27/06/1998 Changed asm/delay.h to linux/delay.h.
37 * 1.13 RMK 29/06/1998 Fixed problem with transmission of packets.
38 * Chip seems to have a bug in, whereby if the
39 * packet starts two bytes from the end of the
40 * buffer, it corrupts the receiver chain, and
41 * never updates the transmit status correctly.
42 * 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing.
43 * 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy
45 * 1.16 RMK 10/02/2000 Updated for 2.3.43
46 * 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8
49 #include <linux/module.h>
50 #include <linux/kernel.h>
51 #include <linux/types.h>
52 #include <linux/fcntl.h>
53 #include <linux/interrupt.h>
54 #include <linux/ptrace.h>
55 #include <linux/ioport.h>
57 #include <linux/slab.h>
58 #include <linux/string.h>
59 #include <linux/errno.h>
60 #include <linux/netdevice.h>
61 #include <linux/etherdevice.h>
62 #include <linux/skbuff.h>
63 #include <linux/device.h>
64 #include <linux/init.h>
65 #include <linux/delay.h>
66 #include <linux/bitops.h>
68 #include <asm/system.h>
69 #include <asm/ecard.h>
72 static char version
[] __initdata
= "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n";
76 static unsigned int net_debug
= NET_DEBUG
;
78 static void ether3_setmulticastlist(struct net_device
*dev
);
79 static int ether3_rx(struct net_device
*dev
, unsigned int maxcnt
);
80 static void ether3_tx(struct net_device
*dev
);
81 static int ether3_open (struct net_device
*dev
);
82 static int ether3_sendpacket (struct sk_buff
*skb
, struct net_device
*dev
);
83 static irqreturn_t
ether3_interrupt (int irq
, void *dev_id
);
84 static int ether3_close (struct net_device
*dev
);
85 static struct net_device_stats
*ether3_getstats (struct net_device
*dev
);
86 static void ether3_setmulticastlist (struct net_device
*dev
);
87 static void ether3_timeout(struct net_device
*dev
);
93 /* --------------------------------------------------------------------------- */
101 * ether3 read/write. Slow things down a bit...
102 * The SEEQ8005 doesn't like us writing to its registers
105 static inline void ether3_outb(int v
, const void __iomem
*r
)
111 static inline void ether3_outw(int v
, const void __iomem
*r
)
116 #define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; })
117 #define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; })
120 ether3_setbuffer(struct net_device
*dev
, buffer_rw_t read
, int start
)
124 ether3_outw(priv(dev
)->regs
.config1
| CFG1_LOCBUFMEM
, REG_CONFIG1
);
125 ether3_outw(priv(dev
)->regs
.command
| CMD_FIFOWRITE
, REG_COMMAND
);
127 while ((ether3_inw(REG_STATUS
) & STAT_FIFOEMPTY
) == 0) {
129 printk("%s: setbuffer broken\n", dev
->name
);
130 priv(dev
)->broken
= 1;
136 if (read
== buffer_read
) {
137 ether3_outw(start
, REG_DMAADDR
);
138 ether3_outw(priv(dev
)->regs
.command
| CMD_FIFOREAD
, REG_COMMAND
);
140 ether3_outw(priv(dev
)->regs
.command
| CMD_FIFOWRITE
, REG_COMMAND
);
141 ether3_outw(start
, REG_DMAADDR
);
147 * write data to the buffer memory
149 #define ether3_writebuffer(dev,data,length) \
150 writesw(REG_BUFWIN, (data), (length) >> 1)
152 #define ether3_writeword(dev,data) \
153 writew((data), REG_BUFWIN)
155 #define ether3_writelong(dev,data) { \
156 void __iomem *reg_bufwin = REG_BUFWIN; \
157 writew((data), reg_bufwin); \
158 writew((data) >> 16, reg_bufwin); \
162 * read data from the buffer memory
164 #define ether3_readbuffer(dev,data,length) \
165 readsw(REG_BUFWIN, (data), (length) >> 1)
167 #define ether3_readword(dev) \
170 #define ether3_readlong(dev) \
171 readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16)
176 static void ether3_ledoff(unsigned long data
)
178 struct net_device
*dev
= (struct net_device
*)data
;
179 ether3_outw(priv(dev
)->regs
.config2
|= CFG2_CTRLO
, REG_CONFIG2
);
185 static inline void ether3_ledon(struct net_device
*dev
)
187 del_timer(&priv(dev
)->timer
);
188 priv(dev
)->timer
.expires
= jiffies
+ HZ
/ 50; /* leave on for 1/50th second */
189 priv(dev
)->timer
.data
= (unsigned long)dev
;
190 priv(dev
)->timer
.function
= ether3_ledoff
;
191 add_timer(&priv(dev
)->timer
);
192 if (priv(dev
)->regs
.config2
& CFG2_CTRLO
)
193 ether3_outw(priv(dev
)->regs
.config2
&= ~CFG2_CTRLO
, REG_CONFIG2
);
197 * Read the ethernet address string from the on board rom.
198 * This is an ascii string!!!
201 ether3_addr(char *addr
, struct expansion_card
*ec
)
203 struct in_chunk_dir cd
;
206 if (ecard_readchunk(&cd
, ec
, 0xf5, 0) && (s
= strchr(cd
.d
.string
, '('))) {
208 for (i
= 0; i
<6; i
++) {
209 addr
[i
] = simple_strtoul(s
+ 1, &s
, 0x10);
210 if (*s
!= (i
==5?')' : ':' ))
216 /* I wonder if we should even let the user continue in this case
217 * - no, it would be better to disable the device
219 printk(KERN_ERR
"ether3: Couldn't read a valid MAC address from card.\n");
223 /* --------------------------------------------------------------------------- */
226 ether3_ramtest(struct net_device
*dev
, unsigned char byte
)
228 unsigned char *buffer
= kmalloc(RX_END
, GFP_KERNEL
);
236 memset(buffer
, byte
, RX_END
);
237 ether3_setbuffer(dev
, buffer_write
, 0);
238 ether3_writebuffer(dev
, buffer
, TX_END
);
239 ether3_setbuffer(dev
, buffer_write
, RX_START
);
240 ether3_writebuffer(dev
, buffer
+ RX_START
, RX_LEN
);
241 memset(buffer
, byte
^ 0xff, RX_END
);
242 ether3_setbuffer(dev
, buffer_read
, 0);
243 ether3_readbuffer(dev
, buffer
, TX_END
);
244 ether3_setbuffer(dev
, buffer_read
, RX_START
);
245 ether3_readbuffer(dev
, buffer
+ RX_START
, RX_LEN
);
247 for (i
= 0; i
< RX_END
; i
++) {
248 if (buffer
[i
] != byte
) {
249 if (max_errors
> 0 && bad
!= buffer
[i
]) {
250 printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X",
251 dev
->name
, buffer
[i
], byte
, i
);
259 printk(" - 0x%04X\n", i
- 1);
266 printk(" - 0xffff\n");
272 /* ------------------------------------------------------------------------------- */
274 static int __devinit
ether3_init_2(struct net_device
*dev
)
278 priv(dev
)->regs
.config1
= CFG1_RECVCOMPSTAT0
|CFG1_DMABURST8
;
279 priv(dev
)->regs
.config2
= CFG2_CTRLO
|CFG2_RECVCRC
|CFG2_ERRENCRC
;
280 priv(dev
)->regs
.command
= 0;
283 * Set up our hardware address
285 ether3_outw(priv(dev
)->regs
.config1
| CFG1_BUFSELSTAT0
, REG_CONFIG1
);
286 for (i
= 0; i
< 6; i
++)
287 ether3_outb(dev
->dev_addr
[i
], REG_BUFWIN
);
289 if (dev
->flags
& IFF_PROMISC
)
290 priv(dev
)->regs
.config1
|= CFG1_RECVPROMISC
;
291 else if (dev
->flags
& IFF_MULTICAST
)
292 priv(dev
)->regs
.config1
|= CFG1_RECVSPECBRMULTI
;
294 priv(dev
)->regs
.config1
|= CFG1_RECVSPECBROAD
;
297 * There is a problem with the NQ8005 in that it occasionally loses the
298 * last two bytes. To get round this problem, we receive the CRC as
299 * well. That way, if we do lose the last two, then it doesn't matter.
301 ether3_outw(priv(dev
)->regs
.config1
| CFG1_TRANSEND
, REG_CONFIG1
);
302 ether3_outw((TX_END
>>8) - 1, REG_BUFWIN
);
303 ether3_outw(priv(dev
)->rx_head
, REG_RECVPTR
);
304 ether3_outw(0, REG_TRANSMITPTR
);
305 ether3_outw(priv(dev
)->rx_head
>> 8, REG_RECVEND
);
306 ether3_outw(priv(dev
)->regs
.config2
, REG_CONFIG2
);
307 ether3_outw(priv(dev
)->regs
.config1
| CFG1_LOCBUFMEM
, REG_CONFIG1
);
308 ether3_outw(priv(dev
)->regs
.command
, REG_COMMAND
);
310 i
= ether3_ramtest(dev
, 0x5A);
313 i
= ether3_ramtest(dev
, 0x1E);
317 ether3_setbuffer(dev
, buffer_write
, 0);
318 ether3_writelong(dev
, 0);
323 ether3_init_for_open(struct net_device
*dev
)
327 memset(&priv(dev
)->stats
, 0, sizeof(struct net_device_stats
));
330 ether3_outw(CFG2_RESET
, REG_CONFIG2
);
333 priv(dev
)->regs
.command
= 0;
334 ether3_outw(CMD_RXOFF
|CMD_TXOFF
, REG_COMMAND
);
335 while (ether3_inw(REG_STATUS
) & (STAT_RXON
|STAT_TXON
))
338 ether3_outw(priv(dev
)->regs
.config1
| CFG1_BUFSELSTAT0
, REG_CONFIG1
);
339 for (i
= 0; i
< 6; i
++)
340 ether3_outb(dev
->dev_addr
[i
], REG_BUFWIN
);
342 priv(dev
)->tx_head
= 0;
343 priv(dev
)->tx_tail
= 0;
344 priv(dev
)->regs
.config2
|= CFG2_CTRLO
;
345 priv(dev
)->rx_head
= RX_START
;
347 ether3_outw(priv(dev
)->regs
.config1
| CFG1_TRANSEND
, REG_CONFIG1
);
348 ether3_outw((TX_END
>>8) - 1, REG_BUFWIN
);
349 ether3_outw(priv(dev
)->rx_head
, REG_RECVPTR
);
350 ether3_outw(priv(dev
)->rx_head
>> 8, REG_RECVEND
);
351 ether3_outw(0, REG_TRANSMITPTR
);
352 ether3_outw(priv(dev
)->regs
.config2
, REG_CONFIG2
);
353 ether3_outw(priv(dev
)->regs
.config1
| CFG1_LOCBUFMEM
, REG_CONFIG1
);
355 ether3_setbuffer(dev
, buffer_write
, 0);
356 ether3_writelong(dev
, 0);
358 priv(dev
)->regs
.command
= CMD_ENINTRX
| CMD_ENINTTX
;
359 ether3_outw(priv(dev
)->regs
.command
| CMD_RXON
, REG_COMMAND
);
363 ether3_probe_bus_8(struct net_device
*dev
, int val
)
365 int write_low
, write_high
, read_low
, read_high
;
367 write_low
= val
& 255;
368 write_high
= val
>> 8;
370 printk(KERN_DEBUG
"ether3_probe: write8 [%02X:%02X]", write_high
, write_low
);
372 ether3_outb(write_low
, REG_RECVPTR
);
373 ether3_outb(write_high
, REG_RECVPTR
+ 4);
375 read_low
= ether3_inb(REG_RECVPTR
);
376 read_high
= ether3_inb(REG_RECVPTR
+ 4);
378 printk(", read8 [%02X:%02X]\n", read_high
, read_low
);
380 return read_low
== write_low
&& read_high
== write_high
;
384 ether3_probe_bus_16(struct net_device
*dev
, int val
)
388 ether3_outw(val
, REG_RECVPTR
);
389 read_val
= ether3_inw(REG_RECVPTR
);
391 printk(KERN_DEBUG
"ether3_probe: write16 [%04X], read16 [%04X]\n", val
, read_val
);
393 return read_val
== val
;
397 * Open/initialize the board. This is called (in the current kernel)
398 * sometime after booting when the 'ifconfig' program is run.
400 * This routine should set everything up anew at each open, even
401 * registers that "should" only need to be set once at boot, so that
402 * there is non-reboot way to recover if something goes wrong.
405 ether3_open(struct net_device
*dev
)
407 if (!is_valid_ether_addr(dev
->dev_addr
)) {
408 printk(KERN_WARNING
"%s: invalid ethernet MAC address\n",
413 if (request_irq(dev
->irq
, ether3_interrupt
, 0, "ether3", dev
))
416 ether3_init_for_open(dev
);
418 netif_start_queue(dev
);
424 * The inverse routine to ether3_open().
427 ether3_close(struct net_device
*dev
)
429 netif_stop_queue(dev
);
431 disable_irq(dev
->irq
);
433 ether3_outw(CMD_RXOFF
|CMD_TXOFF
, REG_COMMAND
);
434 priv(dev
)->regs
.command
= 0;
435 while (ether3_inw(REG_STATUS
) & (STAT_RXON
|STAT_TXON
))
437 ether3_outb(0x80, REG_CONFIG2
+ 4);
438 ether3_outw(0, REG_COMMAND
);
440 free_irq(dev
->irq
, dev
);
446 * Get the current statistics. This may be called with the card open or
449 static struct net_device_stats
*ether3_getstats(struct net_device
*dev
)
451 return &priv(dev
)->stats
;
455 * Set or clear promiscuous/multicast mode filter for this adaptor.
457 * We don't attempt any packet filtering. The card may have a SEEQ 8004
458 * in which does not have the other ethernet address registers present...
460 static void ether3_setmulticastlist(struct net_device
*dev
)
462 priv(dev
)->regs
.config1
&= ~CFG1_RECVPROMISC
;
464 if (dev
->flags
& IFF_PROMISC
) {
465 /* promiscuous mode */
466 priv(dev
)->regs
.config1
|= CFG1_RECVPROMISC
;
467 } else if (dev
->flags
& IFF_ALLMULTI
) {
468 priv(dev
)->regs
.config1
|= CFG1_RECVSPECBRMULTI
;
470 priv(dev
)->regs
.config1
|= CFG1_RECVSPECBROAD
;
472 ether3_outw(priv(dev
)->regs
.config1
| CFG1_LOCBUFMEM
, REG_CONFIG1
);
475 static void ether3_timeout(struct net_device
*dev
)
479 del_timer(&priv(dev
)->timer
);
481 local_irq_save(flags
);
482 printk(KERN_ERR
"%s: transmit timed out, network cable problem?\n", dev
->name
);
483 printk(KERN_ERR
"%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev
->name
,
484 ether3_inw(REG_STATUS
), ether3_inw(REG_CONFIG1
), ether3_inw(REG_CONFIG2
));
485 printk(KERN_ERR
"%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev
->name
,
486 ether3_inw(REG_RECVPTR
), ether3_inw(REG_RECVEND
), ether3_inw(REG_TRANSMITPTR
));
487 printk(KERN_ERR
"%s: tx head=%X tx tail=%X\n", dev
->name
,
488 priv(dev
)->tx_head
, priv(dev
)->tx_tail
);
489 ether3_setbuffer(dev
, buffer_read
, priv(dev
)->tx_tail
);
490 printk(KERN_ERR
"%s: packet status = %08X\n", dev
->name
, ether3_readlong(dev
));
491 local_irq_restore(flags
);
493 priv(dev
)->regs
.config2
|= CFG2_CTRLO
;
494 priv(dev
)->stats
.tx_errors
+= 1;
495 ether3_outw(priv(dev
)->regs
.config2
, REG_CONFIG2
);
496 priv(dev
)->tx_head
= priv(dev
)->tx_tail
= 0;
498 netif_wake_queue(dev
);
505 ether3_sendpacket(struct sk_buff
*skb
, struct net_device
*dev
)
508 unsigned int length
= ETH_ZLEN
< skb
->len
? skb
->len
: ETH_ZLEN
;
509 unsigned int ptr
, next_ptr
;
511 if (priv(dev
)->broken
) {
513 priv(dev
)->stats
.tx_dropped
++;
514 netif_start_queue(dev
);
518 length
= (length
+ 1) & ~1;
519 if (length
!= skb
->len
) {
520 if (skb_padto(skb
, length
))
524 next_ptr
= (priv(dev
)->tx_head
+ 1) & 15;
526 local_irq_save(flags
);
528 if (priv(dev
)->tx_tail
== next_ptr
) {
529 local_irq_restore(flags
);
530 return 1; /* unable to queue */
533 dev
->trans_start
= jiffies
;
534 ptr
= 0x600 * priv(dev
)->tx_head
;
535 priv(dev
)->tx_head
= next_ptr
;
538 #define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS)
540 ether3_setbuffer(dev
, buffer_write
, next_ptr
);
541 ether3_writelong(dev
, 0);
542 ether3_setbuffer(dev
, buffer_write
, ptr
);
543 ether3_writelong(dev
, 0);
544 ether3_writebuffer(dev
, skb
->data
, length
);
545 ether3_writeword(dev
, htons(next_ptr
));
546 ether3_writeword(dev
, TXHDR_CHAINCONTINUE
>> 16);
547 ether3_setbuffer(dev
, buffer_write
, ptr
);
548 ether3_writeword(dev
, htons((ptr
+ length
+ 4)));
549 ether3_writeword(dev
, TXHDR_FLAGS
>> 16);
552 if (!(ether3_inw(REG_STATUS
) & STAT_TXON
)) {
553 ether3_outw(ptr
, REG_TRANSMITPTR
);
554 ether3_outw(priv(dev
)->regs
.command
| CMD_TXON
, REG_COMMAND
);
557 next_ptr
= (priv(dev
)->tx_head
+ 1) & 15;
558 local_irq_restore(flags
);
562 if (priv(dev
)->tx_tail
== next_ptr
)
563 netif_stop_queue(dev
);
570 ether3_interrupt(int irq
, void *dev_id
)
572 struct net_device
*dev
= (struct net_device
*)dev_id
;
573 unsigned int status
, handled
= IRQ_NONE
;
576 if(net_debug
& DEBUG_INT
)
577 printk("eth3irq: %d ", irq
);
580 status
= ether3_inw(REG_STATUS
);
582 if (status
& STAT_INTRX
) {
583 ether3_outw(CMD_ACKINTRX
| priv(dev
)->regs
.command
, REG_COMMAND
);
585 handled
= IRQ_HANDLED
;
588 if (status
& STAT_INTTX
) {
589 ether3_outw(CMD_ACKINTTX
| priv(dev
)->regs
.command
, REG_COMMAND
);
591 handled
= IRQ_HANDLED
;
595 if(net_debug
& DEBUG_INT
)
602 * If we have a good packet(s), get it/them out of the buffers.
604 static int ether3_rx(struct net_device
*dev
, unsigned int maxcnt
)
606 unsigned int next_ptr
= priv(dev
)->rx_head
, received
= 0;
611 unsigned int this_ptr
, status
;
612 unsigned char addrs
[16];
615 * read the first 16 bytes from the buffer.
616 * This contains the status bytes etc and ethernet addresses,
617 * and we also check the source ethernet address to see if
618 * it originated from us.
621 unsigned int temp_ptr
;
622 ether3_setbuffer(dev
, buffer_read
, next_ptr
);
623 temp_ptr
= ether3_readword(dev
);
624 status
= ether3_readword(dev
);
625 if ((status
& (RXSTAT_DONE
| RXHDR_CHAINCONTINUE
| RXHDR_RECEIVE
)) !=
626 (RXSTAT_DONE
| RXHDR_CHAINCONTINUE
) || !temp_ptr
)
629 this_ptr
= next_ptr
+ 4;
630 next_ptr
= ntohs(temp_ptr
);
632 ether3_setbuffer(dev
, buffer_read
, this_ptr
);
633 ether3_readbuffer(dev
, addrs
+2, 12);
635 if (next_ptr
< RX_START
|| next_ptr
>= RX_END
) {
637 printk("%s: bad next pointer @%04X: ", dev
->name
, priv(dev
)->rx_head
);
638 printk("%02X %02X %02X %02X ", next_ptr
>> 8, next_ptr
& 255, status
& 255, status
>> 8);
639 for (i
= 2; i
< 14; i
++)
640 printk("%02X ", addrs
[i
]);
642 next_ptr
= priv(dev
)->rx_head
;
646 * ignore our own packets...
648 if (!(*(unsigned long *)&dev
->dev_addr
[0] ^ *(unsigned long *)&addrs
[2+6]) &&
649 !(*(unsigned short *)&dev
->dev_addr
[4] ^ *(unsigned short *)&addrs
[2+10])) {
650 maxcnt
++; /* compensate for loopedback packet */
651 ether3_outw(next_ptr
>> 8, REG_RECVEND
);
653 if (!(status
& (RXSTAT_OVERSIZE
|RXSTAT_CRCERROR
|RXSTAT_DRIBBLEERROR
|RXSTAT_SHORTPACKET
))) {
654 unsigned int length
= next_ptr
- this_ptr
;
657 if (next_ptr
<= this_ptr
)
658 length
+= RX_END
- RX_START
;
660 skb
= dev_alloc_skb(length
+ 2);
666 buf
= skb_put(skb
, length
);
667 ether3_readbuffer(dev
, buf
+ 12, length
- 12);
668 ether3_outw(next_ptr
>> 8, REG_RECVEND
);
669 *(unsigned short *)(buf
+ 0) = *(unsigned short *)(addrs
+ 2);
670 *(unsigned long *)(buf
+ 2) = *(unsigned long *)(addrs
+ 4);
671 *(unsigned long *)(buf
+ 6) = *(unsigned long *)(addrs
+ 8);
672 *(unsigned short *)(buf
+ 10) = *(unsigned short *)(addrs
+ 12);
673 skb
->protocol
= eth_type_trans(skb
, dev
);
679 struct net_device_stats
*stats
= &priv(dev
)->stats
;
680 ether3_outw(next_ptr
>> 8, REG_RECVEND
);
681 if (status
& RXSTAT_OVERSIZE
) stats
->rx_over_errors
++;
682 if (status
& RXSTAT_CRCERROR
) stats
->rx_crc_errors
++;
683 if (status
& RXSTAT_DRIBBLEERROR
) stats
->rx_fifo_errors
++;
684 if (status
& RXSTAT_SHORTPACKET
) stats
->rx_length_errors
++;
691 priv(dev
)->stats
.rx_packets
+= received
;
692 priv(dev
)->rx_head
= next_ptr
;
694 * If rx went off line, then that means that the buffer may be full. We
695 * have dropped at least one packet.
697 if (!(ether3_inw(REG_STATUS
) & STAT_RXON
)) {
698 priv(dev
)->stats
.rx_dropped
++;
699 ether3_outw(next_ptr
, REG_RECVPTR
);
700 ether3_outw(priv(dev
)->regs
.command
| CMD_RXON
, REG_COMMAND
);
706 static unsigned long last_warned
;
708 ether3_outw(next_ptr
>> 8, REG_RECVEND
);
710 * Don't print this message too many times...
712 if (time_after(jiffies
, last_warned
+ 10 * HZ
)) {
713 last_warned
= jiffies
;
714 printk("%s: memory squeeze, dropping packet.\n", dev
->name
);
716 priv(dev
)->stats
.rx_dropped
++;
722 * Update stats for the transmitted packet(s)
724 static void ether3_tx(struct net_device
*dev
)
726 unsigned int tx_tail
= priv(dev
)->tx_tail
;
730 unsigned long status
;
733 * Read the packet header
735 ether3_setbuffer(dev
, buffer_read
, tx_tail
* 0x600);
736 status
= ether3_readlong(dev
);
739 * Check to see if this packet has been transmitted
741 if ((status
& (TXSTAT_DONE
| TXHDR_TRANSMIT
)) !=
742 (TXSTAT_DONE
| TXHDR_TRANSMIT
))
748 if (!(status
& (TXSTAT_BABBLED
| TXSTAT_16COLLISIONS
)))
749 priv(dev
)->stats
.tx_packets
++;
751 priv(dev
)->stats
.tx_errors
++;
752 if (status
& TXSTAT_16COLLISIONS
)
753 priv(dev
)->stats
.collisions
+= 16;
754 if (status
& TXSTAT_BABBLED
)
755 priv(dev
)->stats
.tx_fifo_errors
++;
758 tx_tail
= (tx_tail
+ 1) & 15;
759 } while (--max_work
);
761 if (priv(dev
)->tx_tail
!= tx_tail
) {
762 priv(dev
)->tx_tail
= tx_tail
;
763 netif_wake_queue(dev
);
767 static void __devinit
ether3_banner(void)
769 static unsigned version_printed
= 0;
771 if (net_debug
&& version_printed
++ == 0)
772 printk(KERN_INFO
"%s", version
);
776 ether3_probe(struct expansion_card
*ec
, const struct ecard_id
*id
)
778 const struct ether3_data
*data
= id
->data
;
779 struct net_device
*dev
;
780 int i
, bus_type
, ret
;
784 ret
= ecard_request_resources(ec
);
788 dev
= alloc_etherdev(sizeof(struct dev_priv
));
794 SET_MODULE_OWNER(dev
);
795 SET_NETDEV_DEV(dev
, &ec
->dev
);
797 priv(dev
)->base
= ioremap(ecard_resource_start(ec
, ECARD_RES_MEMC
),
798 ecard_resource_len(ec
, ECARD_RES_MEMC
));
799 if (!priv(dev
)->base
) {
804 ec
->irqaddr
= priv(dev
)->base
+ data
->base_offset
;
807 priv(dev
)->seeq
= priv(dev
)->base
+ data
->base_offset
;
810 ether3_addr(dev
->dev_addr
, ec
);
812 init_timer(&priv(dev
)->timer
);
816 ether3_outb(0x80, REG_CONFIG2
+ 4);
817 bus_type
= BUS_UNKNOWN
;
820 /* Test using Receive Pointer (16-bit register) to find out
821 * how the ether3 is connected to the bus...
823 if (ether3_probe_bus_8(dev
, 0x100) &&
824 ether3_probe_bus_8(dev
, 0x201))
827 if (bus_type
== BUS_UNKNOWN
&&
828 ether3_probe_bus_16(dev
, 0x101) &&
829 ether3_probe_bus_16(dev
, 0x201))
834 printk(KERN_ERR
"%s: unable to identify bus width\n", dev
->name
);
839 printk(KERN_ERR
"%s: %s found, but is an unsupported "
840 "8-bit card\n", dev
->name
, data
->name
);
848 if (ether3_init_2(dev
)) {
853 dev
->open
= ether3_open
;
854 dev
->stop
= ether3_close
;
855 dev
->hard_start_xmit
= ether3_sendpacket
;
856 dev
->get_stats
= ether3_getstats
;
857 dev
->set_multicast_list
= ether3_setmulticastlist
;
858 dev
->tx_timeout
= ether3_timeout
;
859 dev
->watchdog_timeo
= 5 * HZ
/ 100;
861 ret
= register_netdev(dev
);
865 printk("%s: %s in slot %d, ", dev
->name
, data
->name
, ec
->slot_no
);
866 for (i
= 0; i
< 6; i
++)
867 printk("%2.2x%c", dev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
869 ecard_set_drvdata(ec
, dev
);
874 iounmap(priv(dev
)->base
);
877 ecard_release_resources(ec
);
882 static void __devexit
ether3_remove(struct expansion_card
*ec
)
884 struct net_device
*dev
= ecard_get_drvdata(ec
);
886 ecard_set_drvdata(ec
, NULL
);
888 unregister_netdev(dev
);
889 iounmap(priv(dev
)->base
);
891 ecard_release_resources(ec
);
894 static struct ether3_data ether3
= {
899 static struct ether3_data etherb
= {
901 .base_offset
= 0x800,
904 static const struct ecard_id ether3_ids
[] = {
905 { MANU_ANT2
, PROD_ANT_ETHER3
, ðer3
},
906 { MANU_ANT
, PROD_ANT_ETHER3
, ðer3
},
907 { MANU_ANT
, PROD_ANT_ETHERB
, ðerb
},
911 static struct ecard_driver ether3_driver
= {
912 .probe
= ether3_probe
,
913 .remove
= __devexit_p(ether3_remove
),
914 .id_table
= ether3_ids
,
920 static int __init
ether3_init(void)
922 return ecard_register_driver(ðer3_driver
);
925 static void __exit
ether3_exit(void)
927 ecard_remove_driver(ðer3_driver
);
930 module_init(ether3_init
);
931 module_exit(ether3_exit
);
933 MODULE_LICENSE("GPL");