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/kernel.h>
64 #include <linux/types.h>
65 #include <linux/fcntl.h>
66 #include <linux/interrupt.h>
67 #include <linux/ioport.h>
69 #include <linux/slab.h>
70 #include <linux/string.h>
71 #include <linux/errno.h>
72 #include <linux/init.h>
73 #include <linux/mca-legacy.h>
74 #include <linux/netdevice.h>
75 #include <linux/etherdevice.h>
76 #include <linux/skbuff.h>
77 #include <linux/bitops.h>
78 #include <linux/jiffies.h>
80 #include <asm/system.h>
86 #define DRV_NAME "ne2"
88 /* Some defines that people can play with if so inclined. */
90 /* Do we perform extra sanity checks on stuff ? */
91 /* #define NE_SANITY_CHECK */
93 /* Do we implement the read before write bugfix ? */
94 /* #define NE_RW_BUGFIX */
96 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
97 /* #define PACKETBUF_MEMSIZE 0x40 */
100 /* ---- No user-serviceable parts below ---- */
102 #define NE_BASE (dev->base_addr)
104 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
105 #define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */
106 #define NE_IO_EXTENT 0x30
108 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
109 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
110 #define NESM_START_PG 0x40 /* First page of TX buffer */
111 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
113 /* From the .ADF file: */
114 static unsigned int addresses
[7] __initdata
=
115 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
116 static int irqs
[4] __initdata
= {3, 4, 5, 9};
118 /* From the D-Link ADF file: */
119 static unsigned int dlink_addresses
[4] __initdata
=
120 {0x300, 0x320, 0x340, 0x360};
121 static int dlink_irqs
[8] __initdata
= {3, 4, 5, 9, 10, 11, 14, 15};
123 struct ne2_adapters_t
{
128 static struct ne2_adapters_t ne2_adapters
[] __initdata
= {
129 { 0x6354, "Arco Ethernet Adapter AE/2" },
130 { 0x70DE, "Compex ENET-16 MC/P" },
131 { 0x7154, "Novell Ethernet Adapter NE/2" },
132 { 0x56ea, "D-Link DE-320CT" },
136 extern int netcard_probe(struct net_device
*dev
);
138 static int ne2_probe1(struct net_device
*dev
, int slot
);
140 static int ne_open(struct net_device
*dev
);
141 static int ne_close(struct net_device
*dev
);
143 static void ne_reset_8390(struct net_device
*dev
);
144 static void ne_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
,
146 static void ne_block_input(struct net_device
*dev
, int count
,
147 struct sk_buff
*skb
, int ring_offset
);
148 static void ne_block_output(struct net_device
*dev
, const int count
,
149 const unsigned char *buf
, const int start_page
);
153 * special code to read the DE-320's MAC address EEPROM. In contrast to a
154 * standard NE design, this is a serial EEPROM (93C46) that has to be read
155 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following
158 * Bit 0 = Data out (read from EEPROM)
159 * Bit 1 = Data in (write to EEPROM)
161 * Bit 3 = Chip Select
162 * Bit 7 = ~50 kHz clock for defined delays
166 static void __init
dlink_put_eeprom(unsigned char value
, unsigned int addr
)
169 unsigned char v1
, v2
;
171 /* write the value to the NIC EEPROM register */
173 outb(value
, addr
+ 0x1e);
175 /* now wait the clock line to toggle twice. Effectively, we are
176 waiting (at least) for one clock cycle */
178 for (z
= 0; z
< 2; z
++) {
180 v1
= inb(addr
+ 0x1e);
181 v2
= inb(addr
+ 0x1e);
183 while (!((v1
^ v2
) & 0x80));
187 static void __init
dlink_send_eeprom_bit(unsigned int bit
, unsigned int addr
)
189 /* shift data bit into correct position */
193 /* write value, keep clock line high for two cycles */
195 dlink_put_eeprom(0x09 | bit
, addr
);
196 dlink_put_eeprom(0x0d | bit
, addr
);
197 dlink_put_eeprom(0x0d | bit
, addr
);
198 dlink_put_eeprom(0x09 | bit
, addr
);
201 static void __init
dlink_send_eeprom_word(unsigned int value
, unsigned int len
, unsigned int addr
)
205 /* adjust bits so that they are left-aligned in a 16-bit-word */
207 value
= value
<< (16 - len
);
209 /* shift bits out to the EEPROM */
211 for (z
= 0; z
< len
; z
++) {
212 dlink_send_eeprom_bit((value
& 0x8000) >> 15, addr
);
217 static unsigned int __init
dlink_get_eeprom(unsigned int eeaddr
, unsigned int addr
)
220 unsigned int value
= 0;
222 /* pull the CS line low for a moment. This resets the EEPROM-
223 internal logic, and makes it ready for a new command. */
225 dlink_put_eeprom(0x01, addr
);
226 dlink_put_eeprom(0x09, addr
);
228 /* send one start bit, read command (1 - 0), plus the address to
231 dlink_send_eeprom_word(0x0180 | (eeaddr
& 0x3f), 9, addr
);
233 /* get the data word. We clock by sending 0s to the EEPROM, which
234 get ignored during the read process */
236 for (z
= 0; z
< 16; z
++) {
237 dlink_send_eeprom_bit(0, addr
);
238 value
= (value
<< 1) | (inb(addr
+ 0x1e) & 0x01);
245 * Note that at boot, this probe only picks up one card at a time.
248 static int __init
do_ne2_probe(struct net_device
*dev
)
250 static int current_mca_slot
= -1;
252 int adapter_found
= 0;
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
) {
267 mca_set_adapter_name(current_mca_slot
,
268 ne2_adapters
[i
].name
);
269 mca_mark_as_used(current_mca_slot
);
271 res
= ne2_probe1(dev
, current_mca_slot
);
273 mca_mark_as_unused(current_mca_slot
);
281 struct net_device
* __init
ne2_probe(int unit
)
283 struct net_device
*dev
= alloc_ei_netdev();
287 return ERR_PTR(-ENOMEM
);
289 sprintf(dev
->name
, "eth%d", unit
);
290 netdev_boot_setup_check(dev
);
292 err
= do_ne2_probe(dev
);
302 static int ne2_procinfo(char *buf
, int slot
, struct net_device
*dev
)
306 len
+= sprintf(buf
+len
, "The NE/2 Ethernet Adapter\n" );
307 len
+= sprintf(buf
+len
, "Driver written by Wim Dumon ");
308 len
+= sprintf(buf
+len
, "<wimpie@kotnet.org>\n");
309 len
+= sprintf(buf
+len
, "Modified by ");
310 len
+= sprintf(buf
+len
, "David Weinehall <tao@acc.umu.se>\n");
311 len
+= sprintf(buf
+len
, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
312 len
+= sprintf(buf
+len
, "Based on the original NE2000 drivers\n" );
313 len
+= sprintf(buf
+len
, "Base IO: %#x\n", (unsigned int)dev
->base_addr
);
314 len
+= sprintf(buf
+len
, "IRQ : %d\n", dev
->irq
);
316 #define HW_ADDR(i) dev->dev_addr[i]
317 len
+= sprintf(buf
+len
, "HW addr : %x:%x:%x:%x:%x:%x\n",
318 HW_ADDR(0), HW_ADDR(1), HW_ADDR(2),
319 HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) );
325 static int __init
ne2_probe1(struct net_device
*dev
, int slot
)
327 int i
, base_addr
, irq
, retval
;
329 unsigned char SA_prom
[32];
330 const char *name
= "NE/2";
331 int start_page
, stop_page
;
332 static unsigned version_printed
;
334 if (ei_debug
&& version_printed
++ == 0)
337 printk("NE/2 ethercard found in slot %d:", slot
);
339 /* Read base IO and IRQ from the POS-registers */
340 POS
= mca_read_stored_pos(slot
, 2);
342 printk(" disabled.\n");
346 /* handle different POS register structure for D-Link card */
348 if (mca_read_stored_pos(slot
, 0) == 0xea) {
349 base_addr
= dlink_addresses
[(POS
>> 5) & 0x03];
350 irq
= dlink_irqs
[(POS
>> 2) & 0x07];
354 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
355 " en zou het moeten werken -> %d\n", i);
356 The above line was for remote testing, thanx to sdog ... */
357 base_addr
= addresses
[i
- 1];
358 irq
= irqs
[(POS
& 0x60)>>5];
361 if (!request_region(base_addr
, NE_IO_EXTENT
, DRV_NAME
))
365 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS
,
370 /* Reset the card the way they do it in the Crynwr packet driver */
372 outb(0x0, base_addr
+ NE_RESET
);
373 inb(base_addr
+ NE_RESET
);
374 outb(0x21, base_addr
+ NE_CMD
);
375 if (inb(base_addr
+ NE_CMD
) != 0x21) {
376 printk("NE/2 adapter not responding\n");
381 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose
382 my RAM is okay. Suppose your memory is broken. Then this test
383 should fail and you won't be able to use your card. But if I do not
384 test, you won't be able to use your card, neither. So this test
387 #else /* _I_ never tested it this way .. Go ahead and try ...*/
388 /* Reset card. Who knows what dain-bramaged state it was left in. */
390 unsigned long reset_start_time
= jiffies
;
392 /* DON'T change these to inb_p/outb_p or reset will fail on
394 outb(inb(base_addr
+ NE_RESET
), base_addr
+ NE_RESET
);
396 while ((inb_p(base_addr
+ EN0_ISR
) & ENISR_RESET
) == 0)
397 if (time_after(jiffies
, reset_start_time
+ 2*HZ
/100)) {
398 printk(" not found (no reset ack).\n");
403 outb_p(0xff, base_addr
+ EN0_ISR
); /* Ack all intr. */
408 /* Read the 16 bytes of station address PROM.
409 We must first initialize registers, similar to
410 NS8390_init(eifdev, 0).
411 We can't reliably read the SAPROM address without this.
412 (I learned the hard way!). */
415 unsigned char value
, offset
;
418 {E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, E8390_CMD
},
419 {0x49, EN0_DCFG
}, /* Set WORD-wide (0x49) access. */
420 {0x00, EN0_RCNTLO
}, /* Clear the count regs. */
422 {0x00, EN0_IMR
}, /* Mask completion irq. */
424 {E8390_RXOFF
, EN0_RXCR
}, /* 0x20 Set to monitor */
425 {E8390_TXOFF
, EN0_TXCR
}, /* 0x02 and loopback mode. */
428 {0x00, EN0_RSARLO
}, /* DMA starting at 0x0000. */
430 {E8390_RREAD
+E8390_START
, E8390_CMD
},
433 for (i
= 0; i
< ARRAY_SIZE(program_seq
); i
++)
434 outb_p(program_seq
[i
].value
, base_addr
+
435 program_seq
[i
].offset
);
438 for(i
= 0; i
< 6 /*sizeof(SA_prom)*/; i
+=1) {
439 SA_prom
[i
] = inb(base_addr
+ NE_DATAPORT
);
442 /* I don't know whether the previous sequence includes the general
443 board reset procedure, so better don't omit it and just overwrite
444 the garbage read from a DE-320 with correct stuff. */
446 if (mca_read_stored_pos(slot
, 0) == 0xea) {
449 for (i
= 0; i
< 3; i
++) {
450 v
= dlink_get_eeprom(i
, base_addr
);
451 SA_prom
[(i
<< 1) ] = v
& 0xff;
452 SA_prom
[(i
<< 1) + 1] = (v
>> 8) & 0xff;
456 start_page
= NESM_START_PG
;
457 stop_page
= NESM_STOP_PG
;
461 /* Snarf the interrupt now. There's no point in waiting since we cannot
462 share and the board will usually be enabled. */
463 retval
= request_irq(dev
->irq
, ei_interrupt
, 0, DRV_NAME
, dev
);
465 printk (" unable to get IRQ %d (irqval=%d).\n",
470 dev
->base_addr
= base_addr
;
472 for(i
= 0; i
< ETHER_ADDR_LEN
; i
++) {
473 printk(" %2.2x", SA_prom
[i
]);
474 dev
->dev_addr
[i
] = SA_prom
[i
];
477 printk("\n%s: %s found at %#x, using IRQ %d.\n",
478 dev
->name
, name
, base_addr
, dev
->irq
);
480 mca_set_adapter_procfn(slot
, (MCA_ProcFn
) ne2_procinfo
, dev
);
482 ei_status
.name
= name
;
483 ei_status
.tx_start_page
= start_page
;
484 ei_status
.stop_page
= stop_page
;
485 ei_status
.word16
= (2 == 2);
487 ei_status
.rx_start_page
= start_page
+ TX_PAGES
;
488 #ifdef PACKETBUF_MEMSIZE
489 /* Allow the packet buffer size to be overridden by know-it-alls. */
490 ei_status
.stop_page
= ei_status
.tx_start_page
+ PACKETBUF_MEMSIZE
;
493 ei_status
.reset_8390
= &ne_reset_8390
;
494 ei_status
.block_input
= &ne_block_input
;
495 ei_status
.block_output
= &ne_block_output
;
496 ei_status
.get_8390_hdr
= &ne_get_8390_hdr
;
498 ei_status
.priv
= slot
;
500 dev
->open
= &ne_open
;
501 dev
->stop
= &ne_close
;
502 #ifdef CONFIG_NET_POLL_CONTROLLER
503 dev
->poll_controller
= ei_poll
;
507 retval
= register_netdev(dev
);
512 mca_set_adapter_procfn( ei_status
.priv
, NULL
, NULL
);
513 free_irq(dev
->irq
, dev
);
515 release_region(base_addr
, NE_IO_EXTENT
);
519 static int ne_open(struct net_device
*dev
)
525 static int ne_close(struct net_device
*dev
)
528 printk("%s: Shutting down ethercard.\n", dev
->name
);
533 /* Hard reset the card. This used to pause for the same period that a
534 8390 reset command required, but that shouldn't be necessary. */
535 static void ne_reset_8390(struct net_device
*dev
)
537 unsigned long reset_start_time
= jiffies
;
540 printk("resetting the 8390 t=%ld...", jiffies
);
542 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
543 outb(inb(NE_BASE
+ NE_RESET
), NE_BASE
+ NE_RESET
);
546 ei_status
.dmaing
= 0;
548 /* This check _should_not_ be necessary, omit eventually. */
549 while ((inb_p(NE_BASE
+EN0_ISR
) & ENISR_RESET
) == 0)
550 if (time_after(jiffies
, reset_start_time
+ 2*HZ
/100)) {
551 printk("%s: ne_reset_8390() did not complete.\n",
555 outb_p(ENISR_RESET
, NE_BASE
+ EN0_ISR
); /* Ack intr. */
558 /* Grab the 8390 specific header. Similar to the block_input routine, but
559 we don't need to be concerned with ring wrap as the header will be at
560 the start of a page, so we optimize accordingly. */
562 static void ne_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
,
566 int nic_base
= dev
->base_addr
;
568 /* This *shouldn't* happen.
569 If it does, it's the last thing you'll see */
570 if (ei_status
.dmaing
) {
571 printk("%s: DMAing conflict in ne_get_8390_hdr "
572 "[DMAstat:%d][irqlock:%d].\n",
573 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
);
577 ei_status
.dmaing
|= 0x01;
578 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, nic_base
+ NE_CMD
);
579 outb_p(sizeof(struct e8390_pkt_hdr
), nic_base
+ EN0_RCNTLO
);
580 outb_p(0, nic_base
+ EN0_RCNTHI
);
581 outb_p(0, nic_base
+ EN0_RSARLO
); /* On page boundary */
582 outb_p(ring_page
, nic_base
+ EN0_RSARHI
);
583 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
585 if (ei_status
.word16
)
586 insw(NE_BASE
+ NE_DATAPORT
, hdr
,
587 sizeof(struct e8390_pkt_hdr
)>>1);
589 insb(NE_BASE
+ NE_DATAPORT
, hdr
,
590 sizeof(struct e8390_pkt_hdr
));
592 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
); /* Ack intr. */
593 ei_status
.dmaing
&= ~0x01;
596 /* Block input and output, similar to the Crynwr packet driver. If you
597 are porting to a new ethercard, look at the packet driver source for
598 hints. The NEx000 doesn't share the on-board packet memory -- you have
599 to put the packet out through the "remote DMA" dataport using outb. */
601 static void ne_block_input(struct net_device
*dev
, int count
, struct sk_buff
*skb
,
604 #ifdef NE_SANITY_CHECK
605 int xfer_count
= count
;
607 int nic_base
= dev
->base_addr
;
608 char *buf
= skb
->data
;
610 /* This *shouldn't* happen.
611 If it does, it's the last thing you'll see */
612 if (ei_status
.dmaing
) {
613 printk("%s: DMAing conflict in ne_block_input "
614 "[DMAstat:%d][irqlock:%d].\n",
615 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
);
618 ei_status
.dmaing
|= 0x01;
619 outb_p(E8390_NODMA
+E8390_PAGE0
+E8390_START
, nic_base
+ NE_CMD
);
620 outb_p(count
& 0xff, nic_base
+ EN0_RCNTLO
);
621 outb_p(count
>> 8, nic_base
+ EN0_RCNTHI
);
622 outb_p(ring_offset
& 0xff, nic_base
+ EN0_RSARLO
);
623 outb_p(ring_offset
>> 8, nic_base
+ EN0_RSARHI
);
624 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
625 if (ei_status
.word16
) {
626 insw(NE_BASE
+ NE_DATAPORT
,buf
,count
>>1);
628 buf
[count
-1] = inb(NE_BASE
+ NE_DATAPORT
);
629 #ifdef NE_SANITY_CHECK
634 insb(NE_BASE
+ NE_DATAPORT
, buf
, count
);
637 #ifdef NE_SANITY_CHECK
638 /* This was for the ALPHA version only, but enough people have
639 been encountering problems so it is still here. If you see
640 this message you either 1) have a slightly incompatible clone
641 or 2) have noise/speed problems with your bus. */
642 if (ei_debug
> 1) { /* DMA termination address check... */
643 int addr
, tries
= 20;
645 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
646 -- it's broken for Rx on some cards! */
647 int high
= inb_p(nic_base
+ EN0_RSARHI
);
648 int low
= inb_p(nic_base
+ EN0_RSARLO
);
649 addr
= (high
<< 8) + low
;
650 if (((ring_offset
+ xfer_count
) & 0xff) == low
)
652 } while (--tries
> 0);
654 printk("%s: RX transfer address mismatch,"
655 "%#4.4x (expected) vs. %#4.4x (actual).\n",
656 dev
->name
, ring_offset
+ xfer_count
, addr
);
659 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
); /* Ack intr. */
660 ei_status
.dmaing
&= ~0x01;
663 static void ne_block_output(struct net_device
*dev
, int count
,
664 const unsigned char *buf
, const int start_page
)
666 int nic_base
= NE_BASE
;
667 unsigned long dma_start
;
668 #ifdef NE_SANITY_CHECK
672 /* Round the count up for word writes. Do we need to do this?
673 What effect will an odd byte count have on the 8390?
674 I should check someday. */
675 if (ei_status
.word16
&& (count
& 0x01))
678 /* This *shouldn't* happen.
679 If it does, it's the last thing you'll see */
680 if (ei_status
.dmaing
) {
681 printk("%s: DMAing conflict in ne_block_output."
682 "[DMAstat:%d][irqlock:%d]\n",
683 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
);
686 ei_status
.dmaing
|= 0x01;
687 /* We should already be in page 0, but to be safe... */
688 outb_p(E8390_PAGE0
+E8390_START
+E8390_NODMA
, nic_base
+ NE_CMD
);
690 #ifdef NE_SANITY_CHECK
694 #ifdef NE8390_RW_BUGFIX
695 /* Handle the read-before-write bug the same way as the
696 Crynwr packet driver -- the NatSemi method doesn't work.
697 Actually this doesn't always work either, but if you have
698 problems with your NEx000 this is better than nothing! */
699 outb_p(0x42, nic_base
+ EN0_RCNTLO
);
700 outb_p(0x00, nic_base
+ EN0_RCNTHI
);
701 outb_p(0x42, nic_base
+ EN0_RSARLO
);
702 outb_p(0x00, nic_base
+ EN0_RSARHI
);
703 outb_p(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
704 /* Make certain that the dummy read has occurred. */
710 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
);
712 /* Now the normal output. */
713 outb_p(count
& 0xff, nic_base
+ EN0_RCNTLO
);
714 outb_p(count
>> 8, nic_base
+ EN0_RCNTHI
);
715 outb_p(0x00, nic_base
+ EN0_RSARLO
);
716 outb_p(start_page
, nic_base
+ EN0_RSARHI
);
718 outb_p(E8390_RWRITE
+E8390_START
, nic_base
+ NE_CMD
);
719 if (ei_status
.word16
) {
720 outsw(NE_BASE
+ NE_DATAPORT
, buf
, count
>>1);
722 outsb(NE_BASE
+ NE_DATAPORT
, buf
, count
);
727 #ifdef NE_SANITY_CHECK
728 /* This was for the ALPHA version only, but enough people have
729 been encountering problems so it is still here. */
731 if (ei_debug
> 1) { /* DMA termination address check... */
732 int addr
, tries
= 20;
734 int high
= inb_p(nic_base
+ EN0_RSARHI
);
735 int low
= inb_p(nic_base
+ EN0_RSARLO
);
736 addr
= (high
<< 8) + low
;
737 if ((start_page
<< 8) + count
== addr
)
739 } while (--tries
> 0);
741 printk("%s: Tx packet transfer address mismatch,"
742 "%#4.4x (expected) vs. %#4.4x (actual).\n",
743 dev
->name
, (start_page
<< 8) + count
, addr
);
750 while ((inb_p(nic_base
+ EN0_ISR
) & ENISR_RDC
) == 0)
751 if (time_after(jiffies
, dma_start
+ 2*HZ
/100)) { /* 20ms */
752 printk("%s: timeout waiting for Tx RDC.\n", dev
->name
);
758 outb_p(ENISR_RDC
, nic_base
+ EN0_ISR
); /* Ack intr. */
759 ei_status
.dmaing
&= ~0x01;
765 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
766 static struct net_device
*dev_ne
[MAX_NE_CARDS
];
767 static int io
[MAX_NE_CARDS
];
768 static int irq
[MAX_NE_CARDS
];
769 static int bad
[MAX_NE_CARDS
]; /* 0xbad = bad sig or no reset ack */
770 MODULE_LICENSE("GPL");
772 module_param_array(io
, int, NULL
, 0);
773 module_param_array(irq
, int, NULL
, 0);
774 module_param_array(bad
, int, NULL
, 0);
775 MODULE_PARM_DESC(io
, "(ignored)");
776 MODULE_PARM_DESC(irq
, "(ignored)");
777 MODULE_PARM_DESC(bad
, "(ignored)");
779 /* Module code fixed by David Weinehall */
781 int __init
init_module(void)
783 struct net_device
*dev
;
784 int this_dev
, found
= 0;
786 for (this_dev
= 0; this_dev
< MAX_NE_CARDS
; this_dev
++) {
787 dev
= alloc_ei_netdev();
790 dev
->irq
= irq
[this_dev
];
791 dev
->mem_end
= bad
[this_dev
];
792 dev
->base_addr
= io
[this_dev
];
793 if (do_ne2_probe(dev
) == 0) {
794 dev_ne
[found
++] = dev
;
802 printk(KERN_WARNING
"ne2.c: No NE/2 card found\n");
806 static void cleanup_card(struct net_device
*dev
)
808 mca_mark_as_unused(ei_status
.priv
);
809 mca_set_adapter_procfn( ei_status
.priv
, NULL
, NULL
);
810 free_irq(dev
->irq
, dev
);
811 release_region(dev
->base_addr
, NE_IO_EXTENT
);
814 void __exit
cleanup_module(void)
818 for (this_dev
= 0; this_dev
< MAX_NE_CARDS
; this_dev
++) {
819 struct net_device
*dev
= dev_ne
[this_dev
];
821 unregister_netdev(dev
);