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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/ne2.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/ne2.c')
-rw-r--r--drivers/net/ne2.c829
1 files changed, 829 insertions, 0 deletions
diff --git a/drivers/net/ne2.c b/drivers/net/ne2.c
new file mode 100644
index 000000000000..6ebef27dbfae
--- /dev/null
+++ b/drivers/net/ne2.c
@@ -0,0 +1,829 @@
1/* ne2.c: A NE/2 Ethernet Driver for Linux. */
2/*
3 Based on the NE2000 driver written by Donald Becker (1992-94).
4 modified by Wim Dumon (Apr 1996)
5
6 This software may be used and distributed according to the terms
7 of the GNU General Public License, incorporated herein by reference.
8
9 The author may be reached as wimpie@linux.cc.kuleuven.ac.be
10
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!
15
16 Changelog:
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)
21
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...)
26
27 Mon Sep 7 19:01:44 CET 1998 (David Weinehall)
28 - added support for Arco Electronics AE/2-card (experimental)
29
30 Mon Sep 14 09:53:42 CET 1998 (David Weinehall)
31 - added support for Compex ENET-16MC/P (experimental)
32
33 Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren)
34 - Miscellaneous bugfixes
35
36 Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson)
37 - Cleanup
38
39 Wed Sep 23 14:33:34 CET 1998 (David Weinehall)
40 - Restructuring and rewriting for v2.1.x compliance
41
42 Wed Oct 14 17:19:21 CET 1998 (David Weinehall)
43 - Added code that unregisters irq and proc-info
44 - Version# bump
45
46 Mon Nov 16 15:28:23 CET 1998 (Wim Dumon)
47 - pass 'dev' as last parameter of request_irq in stead of 'NULL'
48
49 Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold)
50 - added support for the D-Link DE-320CT
51
52 * WARNING
53 -------
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 !
58*/
59
60static const char *version = "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n";
61
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>
68#include <linux/in.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
79#include <asm/system.h>
80#include <asm/io.h>
81#include <asm/dma.h>
82
83#include "8390.h"
84
85#define DRV_NAME "ne2"
86
87/* Some defines that people can play with if so inclined. */
88
89/* Do we perform extra sanity checks on stuff ? */
90/* #define NE_SANITY_CHECK */
91
92/* Do we implement the read before write bugfix ? */
93/* #define NE_RW_BUGFIX */
94
95/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
96/* #define PACKETBUF_MEMSIZE 0x40 */
97
98
99/* ---- No user-serviceable parts below ---- */
100
101#define NE_BASE (dev->base_addr)
102#define NE_CMD 0x00
103#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
104#define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */
105#define NE_IO_EXTENT 0x30
106
107#define NE1SM_START_PG 0x20 /* First page of TX buffer */
108#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
109#define NESM_START_PG 0x40 /* First page of TX buffer */
110#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
111
112/* From the .ADF file: */
113static unsigned int addresses[7] __initdata =
114 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
115static int irqs[4] __initdata = {3, 4, 5, 9};
116
117/* From the D-Link ADF file: */
118static unsigned int dlink_addresses[4] __initdata =
119 {0x300, 0x320, 0x340, 0x360};
120static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15};
121
122struct ne2_adapters_t {
123 unsigned int id;
124 char *name;
125};
126
127static struct ne2_adapters_t ne2_adapters[] __initdata = {
128 { 0x6354, "Arco Ethernet Adapter AE/2" },
129 { 0x70DE, "Compex ENET-16 MC/P" },
130 { 0x7154, "Novell Ethernet Adapter NE/2" },
131 { 0x56ea, "D-Link DE-320CT" },
132 { 0x0000, NULL }
133};
134
135extern int netcard_probe(struct net_device *dev);
136
137static int ne2_probe1(struct net_device *dev, int slot);
138
139static int ne_open(struct net_device *dev);
140static int ne_close(struct net_device *dev);
141
142static void ne_reset_8390(struct net_device *dev);
143static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
144 int ring_page);
145static void ne_block_input(struct net_device *dev, int count,
146 struct sk_buff *skb, int ring_offset);
147static void ne_block_output(struct net_device *dev, const int count,
148 const unsigned char *buf, const int start_page);
149
150
151/*
152 * special code to read the DE-320's MAC address EEPROM. In contrast to a
153 * standard NE design, this is a serial EEPROM (93C46) that has to be read
154 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following
155 * layout:
156 *
157 * Bit 0 = Data out (read from EEPROM)
158 * Bit 1 = Data in (write to EEPROM)
159 * Bit 2 = Clock
160 * Bit 3 = Chip Select
161 * Bit 7 = ~50 kHz clock for defined delays
162 *
163 */
164
165static void __init dlink_put_eeprom(unsigned char value, unsigned int addr)
166{
167 int z;
168 unsigned char v1, v2;
169
170 /* write the value to the NIC EEPROM register */
171
172 outb(value, addr + 0x1e);
173
174 /* now wait the clock line to toggle twice. Effectively, we are
175 waiting (at least) for one clock cycle */
176
177 for (z = 0; z < 2; z++) {
178 do {
179 v1 = inb(addr + 0x1e);
180 v2 = inb(addr + 0x1e);
181 }
182 while (!((v1 ^ v2) & 0x80));
183 }
184}
185
186static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr)
187{
188 /* shift data bit into correct position */
189
190 bit = bit << 1;
191
192 /* write value, keep clock line high for two cycles */
193
194 dlink_put_eeprom(0x09 | bit, addr);
195 dlink_put_eeprom(0x0d | bit, addr);
196 dlink_put_eeprom(0x0d | bit, addr);
197 dlink_put_eeprom(0x09 | bit, addr);
198}
199
200static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr)
201{
202 int z;
203
204 /* adjust bits so that they are left-aligned in a 16-bit-word */
205
206 value = value << (16 - len);
207
208 /* shift bits out to the EEPROM */
209
210 for (z = 0; z < len; z++) {
211 dlink_send_eeprom_bit((value & 0x8000) >> 15, addr);
212 value = value << 1;
213 }
214}
215
216static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr)
217{
218 int z;
219 unsigned int value = 0;
220
221 /* pull the CS line low for a moment. This resets the EEPROM-
222 internal logic, and makes it ready for a new command. */
223
224 dlink_put_eeprom(0x01, addr);
225 dlink_put_eeprom(0x09, addr);
226
227 /* send one start bit, read command (1 - 0), plus the address to
228 the EEPROM */
229
230 dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr);
231
232 /* get the data word. We clock by sending 0s to the EEPROM, which
233 get ignored during the read process */
234
235 for (z = 0; z < 16; z++) {
236 dlink_send_eeprom_bit(0, addr);
237 value = (value << 1) | (inb(addr + 0x1e) & 0x01);
238 }
239
240 return value;
241}
242
243/*
244 * Note that at boot, this probe only picks up one card at a time.
245 */
246
247static int __init do_ne2_probe(struct net_device *dev)
248{
249 static int current_mca_slot = -1;
250 int i;
251 int adapter_found = 0;
252
253 SET_MODULE_OWNER(dev);
254
255 /* Do not check any supplied i/o locations.
256 POS registers usually don't fail :) */
257
258 /* MCA cards have POS registers.
259 Autodetecting MCA cards is extremely simple.
260 Just search for the card. */
261
262 for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) {
263 current_mca_slot =
264 mca_find_unused_adapter(ne2_adapters[i].id, 0);
265
266 if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) {
267 int res;
268 mca_set_adapter_name(current_mca_slot,
269 ne2_adapters[i].name);
270 mca_mark_as_used(current_mca_slot);
271
272 res = ne2_probe1(dev, current_mca_slot);
273 if (res)
274 mca_mark_as_unused(current_mca_slot);
275 return res;
276 }
277 }
278 return -ENODEV;
279}
280
281static void cleanup_card(struct net_device *dev)
282{
283 mca_mark_as_unused(ei_status.priv);
284 mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
285 free_irq(dev->irq, dev);
286 release_region(dev->base_addr, NE_IO_EXTENT);
287}
288
289#ifndef MODULE
290struct net_device * __init ne2_probe(int unit)
291{
292 struct net_device *dev = alloc_ei_netdev();
293 int err;
294
295 if (!dev)
296 return ERR_PTR(-ENOMEM);
297
298 sprintf(dev->name, "eth%d", unit);
299 netdev_boot_setup_check(dev);
300
301 err = do_ne2_probe(dev);
302 if (err)
303 goto out;
304 err = register_netdev(dev);
305 if (err)
306 goto out1;
307 return dev;
308out1:
309 cleanup_card(dev);
310out:
311 free_netdev(dev);
312 return ERR_PTR(err);
313}
314#endif
315
316static int ne2_procinfo(char *buf, int slot, struct net_device *dev)
317{
318 int len=0;
319
320 len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" );
321 len += sprintf(buf+len, "Driver written by Wim Dumon ");
322 len += sprintf(buf+len, "<wimpie@kotnet.org>\n");
323 len += sprintf(buf+len, "Modified by ");
324 len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n");
325 len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
326 len += sprintf(buf+len, "Based on the original NE2000 drivers\n" );
327 len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr);
328 len += sprintf(buf+len, "IRQ : %d\n", dev->irq);
329
330#define HW_ADDR(i) dev->dev_addr[i]
331 len += sprintf(buf+len, "HW addr : %x:%x:%x:%x:%x:%x\n",
332 HW_ADDR(0), HW_ADDR(1), HW_ADDR(2),
333 HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) );
334#undef HW_ADDR
335
336 return len;
337}
338
339static int __init ne2_probe1(struct net_device *dev, int slot)
340{
341 int i, base_addr, irq, retval;
342 unsigned char POS;
343 unsigned char SA_prom[32];
344 const char *name = "NE/2";
345 int start_page, stop_page;
346 static unsigned version_printed;
347
348 if (ei_debug && version_printed++ == 0)
349 printk(version);
350
351 printk("NE/2 ethercard found in slot %d:", slot);
352
353 /* Read base IO and IRQ from the POS-registers */
354 POS = mca_read_stored_pos(slot, 2);
355 if(!(POS % 2)) {
356 printk(" disabled.\n");
357 return -ENODEV;
358 }
359
360 /* handle different POS register structure for D-Link card */
361
362 if (mca_read_stored_pos(slot, 0) == 0xea) {
363 base_addr = dlink_addresses[(POS >> 5) & 0x03];
364 irq = dlink_irqs[(POS >> 2) & 0x07];
365 }
366 else {
367 i = (POS & 0xE)>>1;
368 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
369 " en zou het moeten werken -> %d\n", i);
370 The above line was for remote testing, thanx to sdog ... */
371 base_addr = addresses[i - 1];
372 irq = irqs[(POS & 0x60)>>5];
373 }
374
375 if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME))
376 return -EBUSY;
377
378#ifdef DEBUG
379 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS,
380 base_addr, irq);
381#endif
382
383#ifndef CRYNWR_WAY
384 /* Reset the card the way they do it in the Crynwr packet driver */
385 for (i=0; i<8; i++)
386 outb(0x0, base_addr + NE_RESET);
387 inb(base_addr + NE_RESET);
388 outb(0x21, base_addr + NE_CMD);
389 if (inb(base_addr + NE_CMD) != 0x21) {
390 printk("NE/2 adapter not responding\n");
391 retval = -ENODEV;
392 goto out;
393 }
394
395 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose
396 my RAM is okay. Suppose your memory is broken. Then this test
397 should fail and you won't be able to use your card. But if I do not
398 test, you won't be able to use your card, neither. So this test
399 won't help you. */
400
401#else /* _I_ never tested it this way .. Go ahead and try ...*/
402 /* Reset card. Who knows what dain-bramaged state it was left in. */
403 {
404 unsigned long reset_start_time = jiffies;
405
406 /* DON'T change these to inb_p/outb_p or reset will fail on
407 clones.. */
408 outb(inb(base_addr + NE_RESET), base_addr + NE_RESET);
409
410 while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0)
411 if (jiffies - reset_start_time > 2*HZ/100) {
412 printk(" not found (no reset ack).\n");
413 retval = -ENODEV;
414 goto out;
415 }
416
417 outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */
418 }
419#endif
420
421
422 /* Read the 16 bytes of station address PROM.
423 We must first initialize registers, similar to
424 NS8390_init(eifdev, 0).
425 We can't reliably read the SAPROM address without this.
426 (I learned the hard way!). */
427 {
428 struct {
429 unsigned char value, offset;
430 } program_seq[] = {
431 /* Select page 0 */
432 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD},
433 {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */
434 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
435 {0x00, EN0_RCNTHI},
436 {0x00, EN0_IMR}, /* Mask completion irq. */
437 {0xFF, EN0_ISR},
438 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
439 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
440 {32, EN0_RCNTLO},
441 {0x00, EN0_RCNTHI},
442 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
443 {0x00, EN0_RSARHI},
444 {E8390_RREAD+E8390_START, E8390_CMD},
445 };
446
447 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
448 outb_p(program_seq[i].value, base_addr +
449 program_seq[i].offset);
450
451 }
452 for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) {
453 SA_prom[i] = inb(base_addr + NE_DATAPORT);
454 }
455
456 /* I don't know whether the previous sequence includes the general
457 board reset procedure, so better don't omit it and just overwrite
458 the garbage read from a DE-320 with correct stuff. */
459
460 if (mca_read_stored_pos(slot, 0) == 0xea) {
461 unsigned int v;
462
463 for (i = 0; i < 3; i++) {
464 v = dlink_get_eeprom(i, base_addr);
465 SA_prom[(i << 1) ] = v & 0xff;
466 SA_prom[(i << 1) + 1] = (v >> 8) & 0xff;
467 }
468 }
469
470 start_page = NESM_START_PG;
471 stop_page = NESM_STOP_PG;
472
473 dev->irq=irq;
474
475 /* Snarf the interrupt now. There's no point in waiting since we cannot
476 share and the board will usually be enabled. */
477 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
478 if (retval) {
479 printk (" unable to get IRQ %d (irqval=%d).\n",
480 dev->irq, retval);
481 goto out;
482 }
483
484 dev->base_addr = base_addr;
485
486 for(i = 0; i < ETHER_ADDR_LEN; i++) {
487 printk(" %2.2x", SA_prom[i]);
488 dev->dev_addr[i] = SA_prom[i];
489 }
490
491 printk("\n%s: %s found at %#x, using IRQ %d.\n",
492 dev->name, name, base_addr, dev->irq);
493
494 mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev);
495
496 ei_status.name = name;
497 ei_status.tx_start_page = start_page;
498 ei_status.stop_page = stop_page;
499 ei_status.word16 = (2 == 2);
500
501 ei_status.rx_start_page = start_page + TX_PAGES;
502#ifdef PACKETBUF_MEMSIZE
503 /* Allow the packet buffer size to be overridden by know-it-alls. */
504 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
505#endif
506
507 ei_status.reset_8390 = &ne_reset_8390;
508 ei_status.block_input = &ne_block_input;
509 ei_status.block_output = &ne_block_output;
510 ei_status.get_8390_hdr = &ne_get_8390_hdr;
511
512 ei_status.priv = slot;
513
514 dev->open = &ne_open;
515 dev->stop = &ne_close;
516#ifdef CONFIG_NET_POLL_CONTROLLER
517 dev->poll_controller = ei_poll;
518#endif
519 NS8390_init(dev, 0);
520 return 0;
521out:
522 release_region(base_addr, NE_IO_EXTENT);
523 return retval;
524}
525
526static int ne_open(struct net_device *dev)
527{
528 ei_open(dev);
529 return 0;
530}
531
532static int ne_close(struct net_device *dev)
533{
534 if (ei_debug > 1)
535 printk("%s: Shutting down ethercard.\n", dev->name);
536 ei_close(dev);
537 return 0;
538}
539
540/* Hard reset the card. This used to pause for the same period that a
541 8390 reset command required, but that shouldn't be necessary. */
542static void ne_reset_8390(struct net_device *dev)
543{
544 unsigned long reset_start_time = jiffies;
545
546 if (ei_debug > 1)
547 printk("resetting the 8390 t=%ld...", jiffies);
548
549 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
550 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
551
552 ei_status.txing = 0;
553 ei_status.dmaing = 0;
554
555 /* This check _should_not_ be necessary, omit eventually. */
556 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
557 if (jiffies - reset_start_time > 2*HZ/100) {
558 printk("%s: ne_reset_8390() did not complete.\n",
559 dev->name);
560 break;
561 }
562 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
563}
564
565/* Grab the 8390 specific header. Similar to the block_input routine, but
566 we don't need to be concerned with ring wrap as the header will be at
567 the start of a page, so we optimize accordingly. */
568
569static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
570 int ring_page)
571{
572
573 int nic_base = dev->base_addr;
574
575 /* This *shouldn't* happen.
576 If it does, it's the last thing you'll see */
577 if (ei_status.dmaing) {
578 printk("%s: DMAing conflict in ne_get_8390_hdr "
579 "[DMAstat:%d][irqlock:%d].\n",
580 dev->name, ei_status.dmaing, ei_status.irqlock);
581 return;
582 }
583
584 ei_status.dmaing |= 0x01;
585 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
586 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
587 outb_p(0, nic_base + EN0_RCNTHI);
588 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
589 outb_p(ring_page, nic_base + EN0_RSARHI);
590 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
591
592 if (ei_status.word16)
593 insw(NE_BASE + NE_DATAPORT, hdr,
594 sizeof(struct e8390_pkt_hdr)>>1);
595 else
596 insb(NE_BASE + NE_DATAPORT, hdr,
597 sizeof(struct e8390_pkt_hdr));
598
599 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
600 ei_status.dmaing &= ~0x01;
601}
602
603/* Block input and output, similar to the Crynwr packet driver. If you
604 are porting to a new ethercard, look at the packet driver source for
605 hints. The NEx000 doesn't share the on-board packet memory -- you have
606 to put the packet out through the "remote DMA" dataport using outb. */
607
608static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb,
609 int ring_offset)
610{
611#ifdef NE_SANITY_CHECK
612 int xfer_count = count;
613#endif
614 int nic_base = dev->base_addr;
615 char *buf = skb->data;
616
617 /* This *shouldn't* happen.
618 If it does, it's the last thing you'll see */
619 if (ei_status.dmaing) {
620 printk("%s: DMAing conflict in ne_block_input "
621 "[DMAstat:%d][irqlock:%d].\n",
622 dev->name, ei_status.dmaing, ei_status.irqlock);
623 return;
624 }
625 ei_status.dmaing |= 0x01;
626 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
627 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
628 outb_p(count >> 8, nic_base + EN0_RCNTHI);
629 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
630 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
631 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
632 if (ei_status.word16) {
633 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
634 if (count & 0x01) {
635 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
636#ifdef NE_SANITY_CHECK
637 xfer_count++;
638#endif
639 }
640 } else {
641 insb(NE_BASE + NE_DATAPORT, buf, count);
642 }
643
644#ifdef NE_SANITY_CHECK
645 /* This was for the ALPHA version only, but enough people have
646 been encountering problems so it is still here. If you see
647 this message you either 1) have a slightly incompatible clone
648 or 2) have noise/speed problems with your bus. */
649 if (ei_debug > 1) { /* DMA termination address check... */
650 int addr, tries = 20;
651 do {
652 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
653 -- it's broken for Rx on some cards! */
654 int high = inb_p(nic_base + EN0_RSARHI);
655 int low = inb_p(nic_base + EN0_RSARLO);
656 addr = (high << 8) + low;
657 if (((ring_offset + xfer_count) & 0xff) == low)
658 break;
659 } while (--tries > 0);
660 if (tries <= 0)
661 printk("%s: RX transfer address mismatch,"
662 "%#4.4x (expected) vs. %#4.4x (actual).\n",
663 dev->name, ring_offset + xfer_count, addr);
664 }
665#endif
666 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
667 ei_status.dmaing &= ~0x01;
668}
669
670static void ne_block_output(struct net_device *dev, int count,
671 const unsigned char *buf, const int start_page)
672{
673 int nic_base = NE_BASE;
674 unsigned long dma_start;
675#ifdef NE_SANITY_CHECK
676 int retries = 0;
677#endif
678
679 /* Round the count up for word writes. Do we need to do this?
680 What effect will an odd byte count have on the 8390?
681 I should check someday. */
682 if (ei_status.word16 && (count & 0x01))
683 count++;
684
685 /* This *shouldn't* happen.
686 If it does, it's the last thing you'll see */
687 if (ei_status.dmaing) {
688 printk("%s: DMAing conflict in ne_block_output."
689 "[DMAstat:%d][irqlock:%d]\n",
690 dev->name, ei_status.dmaing, ei_status.irqlock);
691 return;
692 }
693 ei_status.dmaing |= 0x01;
694 /* We should already be in page 0, but to be safe... */
695 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
696
697#ifdef NE_SANITY_CHECK
698retry:
699#endif
700
701#ifdef NE8390_RW_BUGFIX
702 /* Handle the read-before-write bug the same way as the
703 Crynwr packet driver -- the NatSemi method doesn't work.
704 Actually this doesn't always work either, but if you have
705 problems with your NEx000 this is better than nothing! */
706 outb_p(0x42, nic_base + EN0_RCNTLO);
707 outb_p(0x00, nic_base + EN0_RCNTHI);
708 outb_p(0x42, nic_base + EN0_RSARLO);
709 outb_p(0x00, nic_base + EN0_RSARHI);
710 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
711 /* Make certain that the dummy read has occurred. */
712 SLOW_DOWN_IO;
713 SLOW_DOWN_IO;
714 SLOW_DOWN_IO;
715#endif
716
717 outb_p(ENISR_RDC, nic_base + EN0_ISR);
718
719 /* Now the normal output. */
720 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
721 outb_p(count >> 8, nic_base + EN0_RCNTHI);
722 outb_p(0x00, nic_base + EN0_RSARLO);
723 outb_p(start_page, nic_base + EN0_RSARHI);
724
725 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
726 if (ei_status.word16) {
727 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
728 } else {
729 outsb(NE_BASE + NE_DATAPORT, buf, count);
730 }
731
732 dma_start = jiffies;
733
734#ifdef NE_SANITY_CHECK
735 /* This was for the ALPHA version only, but enough people have
736 been encountering problems so it is still here. */
737
738 if (ei_debug > 1) { /* DMA termination address check... */
739 int addr, tries = 20;
740 do {
741 int high = inb_p(nic_base + EN0_RSARHI);
742 int low = inb_p(nic_base + EN0_RSARLO);
743 addr = (high << 8) + low;
744 if ((start_page << 8) + count == addr)
745 break;
746 } while (--tries > 0);
747 if (tries <= 0) {
748 printk("%s: Tx packet transfer address mismatch,"
749 "%#4.4x (expected) vs. %#4.4x (actual).\n",
750 dev->name, (start_page << 8) + count, addr);
751 if (retries++ == 0)
752 goto retry;
753 }
754 }
755#endif
756
757 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
758 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
759 printk("%s: timeout waiting for Tx RDC.\n", dev->name);
760 ne_reset_8390(dev);
761 NS8390_init(dev,1);
762 break;
763 }
764
765 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
766 ei_status.dmaing &= ~0x01;
767 return;
768}
769
770
771#ifdef MODULE
772#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
773static struct net_device *dev_ne[MAX_NE_CARDS];
774static int io[MAX_NE_CARDS];
775static int irq[MAX_NE_CARDS];
776static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
777MODULE_LICENSE("GPL");
778
779module_param_array(io, int, NULL, 0);
780module_param_array(irq, int, NULL, 0);
781module_param_array(bad, int, NULL, 0);
782MODULE_PARM_DESC(io, "(ignored)");
783MODULE_PARM_DESC(irq, "(ignored)");
784MODULE_PARM_DESC(bad, "(ignored)");
785
786/* Module code fixed by David Weinehall */
787
788int init_module(void)
789{
790 struct net_device *dev;
791 int this_dev, found = 0;
792
793 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
794 dev = alloc_ei_netdev();
795 if (!dev)
796 break;
797 dev->irq = irq[this_dev];
798 dev->mem_end = bad[this_dev];
799 dev->base_addr = io[this_dev];
800 if (do_ne2_probe(dev) == 0) {
801 if (register_netdev(dev) == 0) {
802 dev_ne[found++] = dev;
803 continue;
804 }
805 cleanup_card(dev);
806 }
807 free_netdev(dev);
808 break;
809 }
810 if (found)
811 return 0;
812 printk(KERN_WARNING "ne2.c: No NE/2 card found\n");
813 return -ENXIO;
814}
815
816void cleanup_module(void)
817{
818 int this_dev;
819
820 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
821 struct net_device *dev = dev_ne[this_dev];
822 if (dev) {
823 unregister_netdev(dev);
824 cleanup_card(dev);
825 free_netdev(dev);
826 }
827 }
828}
829#endif /* MODULE */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-08 07:05:08 -0500