1 /* ne2.c: A NE/2 Ethernet Driver for Linux. */
3 Based on the NE2000 driver written by Donald Becker (1992-94).
4 modified by Wim Dumon (Apr 1996)
6 This software may be used and distributed according to the terms
7 of the GNU General Public License, incorporated herein by reference.
9 The author may be reached as wimpie@linux.cc.kuleuven.ac.be
11 Currently supported: NE/2
12 This patch was never tested on other MCA-ethernet adapters, but it
13 might work. Just give it a try and let me know if you have problems.
14 Also mail me if it really works, please!
17 Mon Feb 3 16:26:02 MET 1997
18 - adapted the driver to work with the 2.1.25 kernel
19 - multiple ne2 support (untested)
20 - module support (untested)
22 Fri Aug 28 00:18:36 CET 1998 (David Weinehall)
23 - fixed a few minor typos
24 - made the MODULE_PARM conditional (it only works with the v2.1.x kernels)
25 - fixed the module support (Now it's working...)
27 Mon Sep 7 19:01:44 CET 1998 (David Weinehall)
28 - added support for Arco Electronics AE/2-card (experimental)
30 Mon Sep 14 09:53:42 CET 1998 (David Weinehall)
31 - added support for Compex ENET-16MC/P (experimental)
33 Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren)
34 - Miscellaneous bugfixes
36 Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson)
39 Wed Sep 23 14:33:34 CET 1998 (David Weinehall)
40 - Restructuring and rewriting for v2.1.x compliance
42 Wed Oct 14 17:19:21 CET 1998 (David Weinehall)
43 - Added code that unregisters irq and proc-info
46 Mon Nov 16 15:28:23 CET 1998 (Wim Dumon)
47 - pass 'dev' as last parameter of request_irq in stead of 'NULL'
49 Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold)
50 - added support for the D-Link DE-320CT
54 This is alpha-test software. It is not guaranteed to work. As a
55 matter of fact, I'm quite sure there are *LOTS* of bugs in here. I
56 would like to hear from you if you use this driver, even if it works.
57 If it doesn't work, be sure to send me a mail with the problems !
60 static const char *version
= "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n";
62 #include <linux/module.h>
63 #include <linux/version.h>
64 #include <linux/kernel.h>
65 #include <linux/types.h>
66 #include <linux/fcntl.h>
67 #include <linux/interrupt.h>
68 #include <linux/ioport.h>
70 #include <linux/slab.h>
71 #include <linux/string.h>
72 #include <linux/errno.h>
73 #include <linux/init.h>
74 #include <linux/mca.h>
75 #include <linux/netdevice.h>
76 #include <linux/etherdevice.h>
77 #include <linux/skbuff.h>
79 #include <asm/system.h>
80 #include <asm/bitops.h>
86 /* Some defines that people can play with if so inclined. */
88 /* Do we perform extra sanity checks on stuff ? */
89 /* #define NE_SANITY_CHECK */
91 /* Do we implement the read before write bugfix ? */
92 /* #define NE_RW_BUGFIX */
94 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
95 /* #define PACKETBUF_MEMSIZE 0x40 */
98 /* ---- No user-serviceable parts below ---- */
100 #define NE_BASE (dev->base_addr)
102 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
103 #define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */
104 #define NE_IO_EXTENT 0x30
106 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
107 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
108 #define NESM_START_PG 0x40 /* First page of TX buffer */
109 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
111 /* From the .ADF file: */
112 static unsigned int addresses
[7] __initdata
=
113 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
114 static int irqs
[4] __initdata
= {3, 4, 5, 9};
116 /* From the D-Link ADF file: */
117 static unsigned int dlink_addresses
[4] __initdata
=
118 {0x300, 0x320, 0x340, 0x360};
119 static int dlink_irqs
[8] __initdata
= {3, 4, 5, 9, 10, 11, 14, 15};
121 struct ne2_adapters_t
{
126 static struct ne2_adapters_t ne2_adapters
[] __initdata
= {
127 { 0x6354, "Arco Ethernet Adapter AE/2" },
128 { 0x70DE, "Compex ENET-16 MC/P" },
129 { 0x7154, "Novell Ethernet Adapter NE/2" },
130 { 0x56ea, "D-Link DE-320CT" },
134 extern int netcard_probe(struct net_device
*dev
);
136 static int ne2_probe1(struct net_device
*dev
, int slot
);
138 static int ne_open(struct net_device
*dev
);
139 static int ne_close(struct net_device
*dev
);
141 static void ne_reset_8390(struct net_device
*dev
);
142 static void ne_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
,
144 static void ne_block_input(struct net_device
*dev
, int count
,
145 struct sk_buff
*skb
, int ring_offset
);
146 static void ne_block_output(struct net_device
*dev
, const int count
,
147 const unsigned char *buf
, const int start_page
);
151 * special code to read the DE-320's MAC address EEPROM. In contrast to a
152 * standard NE design, this is a serial EEPROM (93C46) that has to be read
153 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following
156 * Bit 0 = Data out (read from EEPROM)
157 * Bit 1 = Data in (write to EEPROM)
159 * Bit 3 = Chip Select
160 * Bit 7 = ~50 kHz clock for defined delays
164 static void __init
dlink_put_eeprom(unsigned char value
, unsigned int addr
)
167 unsigned char v1
, v2
;
169 /* write the value to the NIC EEPROM register */
171 outb(value
, addr
+ 0x1e);
173 /* now wait the clock line to toggle twice. Effectively, we are
174 waiting (at least) for one clock cycle */
176 for (z
= 0; z
< 2; z
++) {
178 v1
= inb(addr
+ 0x1e);
179 v2
= inb(addr
+ 0x1e);
181 while (!((v1
^ v2
) & 0x80));
185 static void __init
dlink_send_eeprom_bit(unsigned int bit
, unsigned int addr
)
187 /* shift data bit into correct position */
191 /* write value, keep clock line high for two cycles */
193 dlink_put_eeprom(0x09 | bit
, addr
);
194 dlink_put_eeprom(0x0d | bit
, addr
);
195 dlink_put_eeprom(0x0d | bit
, addr
);
196 dlink_put_eeprom(0x09 | bit
, addr
);
199 static void __init
dlink_send_eeprom_word(unsigned int value
, unsigned int len
, unsigned int addr
)
203 /* adjust bits so that they are left-aligned in a 16-bit-word */
205 value
= value
<< (16 - len
);
207 /* shift bits out to the EEPROM */
209 for (z
= 0; z
< len
; z
++) {
210 dlink_send_eeprom_bit((value
& 0x8000) >> 15, addr
);
215 static unsigned int __init
dlink_get_eeprom(unsigned int eeaddr
, unsigned int addr
)
218 unsigned int value
= 0;
220 /* pull the CS line low for a moment. This resets the EEPROM-
221 internal logic, and makes it ready for a new command. */
223 dlink_put_eeprom(0x01, addr
);
224 dlink_put_eeprom(0x09, addr
);
226 /* send one start bit, read command (1 - 0), plus the address to
229 dlink_send_eeprom_word(0x0180 | (eeaddr
& 0x3f), 9, addr
);
231 /* get the data word. We clock by sending 0s to the EEPROM, which
232 get ignored during the read process */
234 for (z
= 0; z
< 16; z
++) {
235 dlink_send_eeprom_bit(0, addr
);
236 value
= (value
<< 1) | (inb(addr
+ 0x1e) & 0x01);
243 * Note that at boot, this probe only picks up one card at a time.
246 int __init
ne2_probe(struct net_device
*dev
)
248 static int current_mca_slot
= -1;
250 int adapter_found
= 0;
252 SET_MODULE_OWNER(dev
);
254 /* Do not check any supplied i/o locations.
255 POS registers usually don't fail :) */
257 /* MCA cards have POS registers.
258 Autodetecting MCA cards is extremely simple.
259 Just search for the card. */
261 for(i
= 0; (ne2_adapters
[i
].name
!= NULL
) && !adapter_found
; i
++) {
263 mca_find_unused_adapter(ne2_adapters
[i
].id
, 0);
265 if((current_mca_slot
!= MCA_NOTFOUND
) && !adapter_found
) {
266 mca_set_adapter_name(current_mca_slot
,
267 ne2_adapters
[i
].name
);
268 mca_mark_as_used(current_mca_slot
);
270 return ne2_probe1(dev
, current_mca_slot
);
277 static int ne2_procinfo(char *buf
, int slot
, struct net_device
*dev
)
281 len
+= sprintf(buf
+len
, "The NE/2 Ethernet Adapter\n" );
282 len
+= sprintf(buf
+len
, "Driver written by Wim Dumon ");
283 len
+= sprintf(buf
+len
, "<wimpie@kotnet.org>\n");
284 len
+= sprintf(buf
+len
, "Modified by ");
285 len
+= sprintf(buf
+len
, "David Weinehall <tao@acc.umu.se>\n");
286 len
+= sprintf(buf
+len
, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
287 len
+= sprintf(buf
+len
, "Based on the original NE2000 drivers\n" );
288 len
+= sprintf(buf
+len
, "Base IO: %#x\n", (unsigned int)dev
->base_addr
);
289 len
+= sprintf(buf
+len
, "IRQ : %d\n", dev
->irq
);
291 #define HW_ADDR(i) dev->dev_addr[i]
292 len
+= sprintf(buf
+len
, "HW addr : %x:%x:%x:%x:%x:%x\n",
293 HW_ADDR(0), HW_ADDR(1), HW_ADDR(2),
294 HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) );
300 static int __init
ne2_probe1(struct net_device
*dev
, int slot
)
302 int i
, base_addr
, irq
, retval
;
304 unsigned char SA_prom
[32];
305 const char *name
= "NE/2";
306 int start_page
, stop_page
;
307 static unsigned version_printed
;
309 if (ei_debug
&& version_printed
++ == 0)
312 printk("NE/2 ethercard found in slot %d:", slot
);
314 /* Read base IO and IRQ from the POS-registers */
315 POS
= mca_read_stored_pos(slot
, 2);
317 printk(" disabled.\n");
321 /* handle different POS register structure for D-Link card */
323 if (mca_read_stored_pos(slot
, 0) == 0xea) {
324 base_addr
= dlink_addresses
[(POS
>> 5) & 0x03];
325 irq
= dlink_irqs
[(POS
>> 2) & 0x07];
329 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
330 " en zou het moeten werken -> %d\n", i);
331 The above line was for remote testing, thanx to sdog ... */
332 base_addr
= addresses
[i
- 1];
333 irq
= irqs
[(POS
& 0x60)>>5];
336 if (!request_region(base_addr
, NE_IO_EXTENT
, dev
->name
))
340 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS
,
345 /* Reset the card the way they do it in the Crynwr packet driver */
347 outb(0x0, base_addr
+ NE_RESET
);
348 inb(base_addr
+ NE_RESET
);
349 outb(0x21, base_addr
+ NE_CMD
);
350 if (inb(base_addr
+ NE_CMD
) != 0x21) {
351 printk("NE/2 adapter not responding\n");
356 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose
357 my RAM is okay. Suppose your memory is broken. Then this test
358 should fail and you won't be able to use your card. But if I do not
359 test, you won't be able to use your card, neither. So this test
362 #else /* _I_ never tested it this way .. Go ahead and try ...*/
363 /* Reset card. Who knows what dain-bramaged state it was left in. */
365 unsigned long reset_start_time
= jiffies
;
367 /* DON'T change these to inb_p/outb_p or reset will fail on
369 outb(inb(base_addr
+ NE_RESET
), base_addr
+ NE_RESET
);
371 while ((inb_p(base_addr
+ EN0_ISR
) & ENISR_RESET
) == 0)
372 if (jiffies
- reset_start_time
> 2*HZ
/100) {
373 printk(" not found (no reset ack).\n");
378 outb_p(0xff, base_addr
+ EN0_ISR
); /* Ack all intr. */
383 /* Read the 16 bytes of station address PROM.
384 We must first initialize registers, similar to
385 NS8390_init(eifdev, 0).
386 We can't reliably read the SAPROM address without this.
387 (I learned the hard way!). */
390 unsigned char value
, offset
;
393 {E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, E8390_CMD
},
394 {0x49, EN0_DCFG
}, /* Set WORD-wide (0x49) access. */
395 {0x00, EN0_RCNTLO
}, /* Clear the count regs. */
397 {0x00, EN0_IMR
}, /* Mask completion irq. */
399 {E8390_RXOFF
, EN0_RXCR
}, /* 0x20 Set to monitor */
400 {E8390_TXOFF
, EN0_TXCR
}, /* 0x02 and loopback mode. */
403 {0x00, EN0_RSARLO
}, /* DMA starting at 0x0000. */
405 {E8390_RREAD
+E8390_START
, E8390_CMD
},
408 for (i
= 0; i
< sizeof(program_seq
)/sizeof(program_seq
[0]); i
++)
409 outb_p(program_seq
[i
].value
, base_addr
+
410 program_seq
[i
].offset
);
413 for(i
= 0; i
< 6 /*sizeof(SA_prom)*/; i
+=1) {
414 SA_prom
[i
] = inb(base_addr
+ NE_DATAPORT
);
417 /* I don't know whether the previous sequence includes the general
418 board reset procedure, so better don't omit it and just overwrite
419 the garbage read from a DE-320 with correct stuff. */
421 if (mca_read_stored_pos(slot
, 0) == 0xea) {
424 for (i
= 0; i
< 3; i
++) {
425 v
= dlink_get_eeprom(i
, base_addr
);
426 SA_prom
[(i
<< 1) ] = v
& 0xff;
427 SA_prom
[(i
<< 1) + 1] = (v
>> 8) & 0xff;
431 start_page
= NESM_START_PG
;
432 stop_page
= NESM_STOP_PG
;
436 /* Snarf the interrupt now. There's no point in waiting since we cannot
437 share and the board will usually be enabled. */
438 retval
= request_irq(dev
->irq
, ei_interrupt
, 0, dev
->name
, dev
);
440 printk (" unable to get IRQ %d (irqval=%d).\n",
445 dev
->base_addr
= base_addr
;
447 /* Allocate dev->priv and fill in 8390 specific dev fields. */
448 if (ethdev_init(dev
)) {
449 printk (" unable to get memory for dev->priv.\n");
450 free_irq(dev
->irq
, dev
);
455 for(i
= 0; i
< ETHER_ADDR_LEN
; i
++) {
456 printk(" %2.2x", SA_prom
[i
]);
457 dev
->dev_addr
[i
] = SA_prom
[i
];
460 printk("\n%s: %s found at %#x, using IRQ %d.\n",
461 dev
->name
, name
, base_addr
, dev
->irq
);
463 mca_set_adapter_procfn(slot
, (MCA_ProcFn
) ne2_procinfo
, dev
);
465 ei_status
.name
= name
;
466 ei_status
.tx_start_page
= start_page
;
467 ei_status
.stop_page
= stop_page
;
468 ei_status
.word16
= (2 == 2);
470 ei_status
.rx_start_page
= start_page
+ TX_PAGES
;
471 #ifdef PACKETBUF_MEMSIZE
472 /* Allow the packet buffer size to be overridden by know-it-alls. */
473 ei_status
.stop_page
= ei_status
.tx_start_page
+ PACKETBUF_MEMSIZE
;
476 ei_status
.reset_8390
= &ne_reset_8390
;
477 ei_status
.block_input
= &ne_block_input
;
478 ei_status
.block_output
= &ne_block_output
;
479 ei_status
.get_8390_hdr
= &ne_get_8390_hdr
;
481 ei_status
.priv
= slot
;
483 dev
->open
= &ne_open
;
484 dev
->stop
= &ne_close
;
488 release_region(base_addr
, NE_IO_EXTENT
);
492 static int ne_open(struct net_device
*dev
)
498 static int ne_close(struct net_device
*dev
)
501 printk("%s: Shutting down ethercard.\n", dev
->name
);
506 /* Hard reset the card. This used to pause for the same period that a
507 8390 reset command required, but that shouldn't be necessary. */
508 static void ne_reset_8390(struct net_device
*dev
)
510 unsigned long reset_start_time
= jiffies
;
513 printk("resetting the 8390 t=%ld...", jiffies
);
515 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
516 outb(inb(NE_BASE
+ NE_RESET
), NE_BASE
+ NE_RESET
);
519 ei_status
.dmaing
= 0;
521 /* This check _should_not_ be necessary, omit eventually. */
522 while ((inb_p(NE_BASE
+EN0_ISR
) & ENISR_RESET
) == 0)
523 if (jiffies
- reset_start_time
> 2*HZ
/100) {
524 printk("%s: ne_reset_8390() did not complete.\n",
528 outb_p(ENISR_RESET
, NE_BASE
+ EN0_ISR
); /* Ack intr. */
531 /* Grab the 8390 specific header. Similar to the block_input routine, but
532 we don't need to be concerned with ring wrap as the header will be at
533 the start of a page, so we optimize accordingly. */
535 static void ne_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
,
539 int nic_base
= dev
->base_addr
;
541 /* This *shouldn't* happen.
542 If it does, it's the last thing you'll see */
543 if (ei_status
.dmaing
) {
544 printk("%s: DMAing conflict in ne_get_8390_hdr "
545 "[DMAstat:%d][irqlock:%d].\n",
546 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
);
550 ei_status
.dmaing
|= 0x01;
551 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, nic_base
+ NE_CMD
);
552 outb_p(sizeof(struct e8390_pkt_hdr
), nic_base
+ EN0_RCNTLO
);
553 outb_p(0, nic_base
+ EN0_RCNTHI
);
554 outb_p(0, nic_base
+ EN0_RSARLO
); /* On page boundary */
555 outb_p(ring_page
, nic_base
+ EN0_RSARHI
);
556 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
558 if (ei_status
.word16
)
559 insw(NE_BASE
+ NE_DATAPORT
, hdr
,
560 sizeof(struct e8390_pkt_hdr
)>>1);
562 insb(NE_BASE
+ NE_DATAPORT
, hdr
,
563 sizeof(struct e8390_pkt_hdr
));
565 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
); /* Ack intr. */
566 ei_status
.dmaing
&= ~0x01;
569 /* Block input and output, similar to the Crynwr packet driver. If you
570 are porting to a new ethercard, look at the packet driver source for
571 hints. The NEx000 doesn't share the on-board packet memory -- you have
572 to put the packet out through the "remote DMA" dataport using outb. */
574 static void ne_block_input(struct net_device
*dev
, int count
, struct sk_buff
*skb
,
577 #ifdef NE_SANITY_CHECK
578 int xfer_count
= count
;
580 int nic_base
= dev
->base_addr
;
581 char *buf
= skb
->data
;
583 /* This *shouldn't* happen.
584 If it does, it's the last thing you'll see */
585 if (ei_status
.dmaing
) {
586 printk("%s: DMAing conflict in ne_block_input "
587 "[DMAstat:%d][irqlock:%d].\n",
588 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
);
591 ei_status
.dmaing
|= 0x01;
592 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, nic_base
+ NE_CMD
);
593 outb_p(count
& 0xff, nic_base
+ EN0_RCNTLO
);
594 outb_p(count
>> 8, nic_base
+ EN0_RCNTHI
);
595 outb_p(ring_offset
& 0xff, nic_base
+ EN0_RSARLO
);
596 outb_p(ring_offset
>> 8, nic_base
+ EN0_RSARHI
);
597 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
598 if (ei_status
.word16
) {
599 insw(NE_BASE
+ NE_DATAPORT
,buf
,count
>>1);
601 buf
[count
-1] = inb(NE_BASE
+ NE_DATAPORT
);
602 #ifdef NE_SANITY_CHECK
607 insb(NE_BASE
+ NE_DATAPORT
, buf
, count
);
610 #ifdef NE_SANITY_CHECK
611 /* This was for the ALPHA version only, but enough people have
612 been encountering problems so it is still here. If you see
613 this message you either 1) have a slightly incompatible clone
614 or 2) have noise/speed problems with your bus. */
615 if (ei_debug
> 1) { /* DMA termination address check... */
616 int addr
, tries
= 20;
618 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
619 -- it's broken for Rx on some cards! */
620 int high
= inb_p(nic_base
+ EN0_RSARHI
);
621 int low
= inb_p(nic_base
+ EN0_RSARLO
);
622 addr
= (high
<< 8) + low
;
623 if (((ring_offset
+ xfer_count
) & 0xff) == low
)
625 } while (--tries
> 0);
627 printk("%s: RX transfer address mismatch,"
628 "%#4.4x (expected) vs. %#4.4x (actual).\n",
629 dev
->name
, ring_offset
+ xfer_count
, addr
);
632 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
); /* Ack intr. */
633 ei_status
.dmaing
&= ~0x01;
636 static void ne_block_output(struct net_device
*dev
, int count
,
637 const unsigned char *buf
, const int start_page
)
639 int nic_base
= NE_BASE
;
640 unsigned long dma_start
;
641 #ifdef NE_SANITY_CHECK
645 /* Round the count up for word writes. Do we need to do this?
646 What effect will an odd byte count have on the 8390?
647 I should check someday. */
648 if (ei_status
.word16
&& (count
& 0x01))
651 /* This *shouldn't* happen.
652 If it does, it's the last thing you'll see */
653 if (ei_status
.dmaing
) {
654 printk("%s: DMAing conflict in ne_block_output."
655 "[DMAstat:%d][irqlock:%d]\n",
656 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
);
659 ei_status
.dmaing
|= 0x01;
660 /* We should already be in page 0, but to be safe... */
661 outb_p(E8390_PAGE0
+E8390_START
+E8390_NODMA
, nic_base
+ NE_CMD
);
663 #ifdef NE_SANITY_CHECK
667 #ifdef NE8390_RW_BUGFIX
668 /* Handle the read-before-write bug the same way as the
669 Crynwr packet driver -- the NatSemi method doesn't work.
670 Actually this doesn't always work either, but if you have
671 problems with your NEx000 this is better than nothing! */
672 outb_p(0x42, nic_base
+ EN0_RCNTLO
);
673 outb_p(0x00, nic_base
+ EN0_RCNTHI
);
674 outb_p(0x42, nic_base
+ EN0_RSARLO
);
675 outb_p(0x00, nic_base
+ EN0_RSARHI
);
676 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
677 /* Make certain that the dummy read has occurred. */
683 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
);
685 /* Now the normal output. */
686 outb_p(count
& 0xff, nic_base
+ EN0_RCNTLO
);
687 outb_p(count
>> 8, nic_base
+ EN0_RCNTHI
);
688 outb_p(0x00, nic_base
+ EN0_RSARLO
);
689 outb_p(start_page
, nic_base
+ EN0_RSARHI
);
691 outb_p(E8390_RWRITE
+E8390_START
, nic_base
+ NE_CMD
);
692 if (ei_status
.word16
) {
693 outsw(NE_BASE
+ NE_DATAPORT
, buf
, count
>>1);
695 outsb(NE_BASE
+ NE_DATAPORT
, buf
, count
);
700 #ifdef NE_SANITY_CHECK
701 /* This was for the ALPHA version only, but enough people have
702 been encountering problems so it is still here. */
704 if (ei_debug
> 1) { /* DMA termination address check... */
705 int addr
, tries
= 20;
707 int high
= inb_p(nic_base
+ EN0_RSARHI
);
708 int low
= inb_p(nic_base
+ EN0_RSARLO
);
709 addr
= (high
<< 8) + low
;
710 if ((start_page
<< 8) + count
== addr
)
712 } while (--tries
> 0);
714 printk("%s: Tx packet transfer address mismatch,"
715 "%#4.4x (expected) vs. %#4.4x (actual).\n",
716 dev
->name
, (start_page
<< 8) + count
, addr
);
723 while ((inb_p(nic_base
+ EN0_ISR
) & ENISR_RDC
) == 0)
724 if (jiffies
- dma_start
> 2*HZ
/100) { /* 20ms */
725 printk("%s: timeout waiting for Tx RDC.\n", dev
->name
);
731 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
); /* Ack intr. */
732 ei_status
.dmaing
&= ~0x01;
738 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
739 static struct net_device dev_ne
[MAX_NE_CARDS
];
740 static int io
[MAX_NE_CARDS
];
741 static int irq
[MAX_NE_CARDS
];
742 static int bad
[MAX_NE_CARDS
]; /* 0xbad = bad sig or no reset ack */
743 MODULE_LICENSE("GPL");
746 MODULE_PARM(io
, "1-" __MODULE_STRING(MAX_NE_CARDS
) "i");
747 MODULE_PARM(irq
, "1-" __MODULE_STRING(MAX_NE_CARDS
) "i");
748 MODULE_PARM(bad
, "1-" __MODULE_STRING(MAX_NE_CARDS
) "i");
749 MODULE_PARM_DESC(io
, "(ignored)");
750 MODULE_PARM_DESC(irq
, "(ignored)");
751 MODULE_PARM_DESC(bad
, "(ignored)");
754 /* Module code fixed by David Weinehall */
756 int init_module(void)
758 int this_dev
, found
= 0;
760 for (this_dev
= 0; this_dev
< MAX_NE_CARDS
; this_dev
++) {
761 struct net_device
*dev
= &dev_ne
[this_dev
];
762 dev
->irq
= irq
[this_dev
];
763 dev
->mem_end
= bad
[this_dev
];
764 dev
->base_addr
= io
[this_dev
];
765 dev
->init
= ne2_probe
;
766 if (register_netdev(dev
) != 0) {
767 if (found
!= 0) return 0; /* Got at least one. */
769 printk(KERN_WARNING
"ne2.c: No NE/2 card found.\n");
777 void cleanup_module(void)
781 for (this_dev
= 0; this_dev
< MAX_NE_CARDS
; this_dev
++) {
782 struct net_device
*dev
= &dev_ne
[this_dev
];
783 if (dev
->priv
!= NULL
) {
784 mca_mark_as_unused(ei_status
.priv
);
785 mca_set_adapter_procfn( ei_status
.priv
, NULL
, NULL
);
787 free_irq(dev
->irq
, dev
);
788 release_region(dev
->base_addr
, NE_IO_EXTENT
);
789 unregister_netdev(dev
);
797 * compile-command: "gcc -DKERNEL -Wall -O6 -fomit-frame-pointer -I/usr/src/linux/net/tcp -c ne2.c"
799 * kept-new-versions: 5