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iwlwifi: hw_setting cleanup
[linux-2.6-block.git] / drivers / net / ne2.c
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1da177e4
LT		 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)
6aa20a22 31 - added support for Compex ENET-16MC/P (experimental)
1da177e4
LT		 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)
6aa20a22 47 - pass 'dev' as last parameter of request_irq in stead of 'NULL'
1da177e4
LT		 48
49 Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold)
50 - added support for the D-Link DE-320CT
6aa20a22 51
1da177e4
LT		 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>
ff5688ae 78#include <linux/jiffies.h>
1da177e4
LT		 79
80#include <asm/system.h>
81#include <asm/io.h>
82#include <asm/dma.h>
83
84#include "8390.h"
85
86#define DRV_NAME "ne2"
87
88/* Some defines that people can play with if so inclined. */
89
90/* Do we perform extra sanity checks on stuff ? */
91/* #define NE_SANITY_CHECK */
92
93/* Do we implement the read before write bugfix ? */
94/* #define NE_RW_BUGFIX */
95
96/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
97/* #define PACKETBUF_MEMSIZE 0x40 */
98
99
100/* ---- No user-serviceable parts below ---- */
101
102#define NE_BASE (dev->base_addr)
103#define NE_CMD 0x00
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
107
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 */
112
113/* From the .ADF file: */
114static unsigned int addresses[7] __initdata =
115 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
116static int irqs[4] __initdata = {3, 4, 5, 9};
117
118/* From the D-Link ADF file: */
119static unsigned int dlink_addresses[4] __initdata =
120 {0x300, 0x320, 0x340, 0x360};
121static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15};
122
123struct ne2_adapters_t {
124 unsigned int id;
125 char *name;
126};
127
128static 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" },
133 { 0x0000, NULL }
134};
135
136extern int netcard_probe(struct net_device *dev);
137
138static int ne2_probe1(struct net_device *dev, int slot);
139
140static int ne_open(struct net_device *dev);
141static int ne_close(struct net_device *dev);
142
143static void ne_reset_8390(struct net_device *dev);
144static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
145 int ring_page);
146static void ne_block_input(struct net_device *dev, int count,
147 struct sk_buff *skb, int ring_offset);
148static void ne_block_output(struct net_device *dev, const int count,
149 const unsigned char *buf, const int start_page);
150
151
152/*
6aa20a22 153 * special code to read the DE-320's MAC address EEPROM. In contrast to a
1da177e4 154 * standard NE design, this is a serial EEPROM (93C46) that has to be read
6aa20a22 155 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following
1da177e4
LT		 156 * layout:
157 *
158 * Bit 0 = Data out (read from EEPROM)
159 * Bit 1 = Data in (write to EEPROM)
160 * Bit 2 = Clock
161 * Bit 3 = Chip Select
162 * Bit 7 = ~50 kHz clock for defined delays
163 *
164 */
165
166static void __init dlink_put_eeprom(unsigned char value, unsigned int addr)
167{
168 int z;
169 unsigned char v1, v2;
170
171 /* write the value to the NIC EEPROM register */
172
173 outb(value, addr + 0x1e);
174
175 /* now wait the clock line to toggle twice. Effectively, we are
176 waiting (at least) for one clock cycle */
177
178 for (z = 0; z < 2; z++) {
179 do {
180 v1 = inb(addr + 0x1e);
181 v2 = inb(addr + 0x1e);
182 }
183 while (!((v1 ^ v2) & 0x80));
184 }
185}
186
187static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr)
188{
189 /* shift data bit into correct position */
190
191 bit = bit << 1;
192
193 /* write value, keep clock line high for two cycles */
194
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);
199}
200
201static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr)
202{
203 int z;
204
205 /* adjust bits so that they are left-aligned in a 16-bit-word */
206
207 value = value << (16 - len);
208
209 /* shift bits out to the EEPROM */
210
211 for (z = 0; z < len; z++) {
212 dlink_send_eeprom_bit((value & 0x8000) >> 15, addr);
213 value = value << 1;
214 }
215}
216
217static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr)
218{
219 int z;
220 unsigned int value = 0;
6aa20a22 221
1da177e4
LT		 222 /* pull the CS line low for a moment. This resets the EEPROM-
223 internal logic, and makes it ready for a new command. */
224
225 dlink_put_eeprom(0x01, addr);
226 dlink_put_eeprom(0x09, addr);
227
228 /* send one start bit, read command (1 - 0), plus the address to
229 the EEPROM */
230
231 dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr);
232
233 /* get the data word. We clock by sending 0s to the EEPROM, which
234 get ignored during the read process */
235
236 for (z = 0; z < 16; z++) {
237 dlink_send_eeprom_bit(0, addr);
238 value = (value << 1) | (inb(addr + 0x1e) & 0x01);
239 }
240
241 return value;
242}
243
244/*
245 * Note that at boot, this probe only picks up one card at a time.
246 */
247
248static int __init do_ne2_probe(struct net_device *dev)
249{
250 static int current_mca_slot = -1;
251 int i;
252 int adapter_found = 0;
253
6aa20a22 254 /* Do not check any supplied i/o locations.
1da177e4
LT		 255 POS registers usually don't fail :) */
256
6aa20a22
JG		 257 /* MCA cards have POS registers.
258 Autodetecting MCA cards is extremely simple.
1da177e4
LT		 259 Just search for the card. */
260
261 for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) {
6aa20a22 262 current_mca_slot =
1da177e4
LT		 263 mca_find_unused_adapter(ne2_adapters[i].id, 0);
264
265 if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) {
266 int res;
6aa20a22 267 mca_set_adapter_name(current_mca_slot,
1da177e4
LT		 268 ne2_adapters[i].name);
269 mca_mark_as_used(current_mca_slot);
6aa20a22 270
1da177e4
LT		 271 res = ne2_probe1(dev, current_mca_slot);
272 if (res)
273 mca_mark_as_unused(current_mca_slot);
274 return res;
275 }
276 }
277 return -ENODEV;
278}
279
1da177e4
LT		 280#ifndef MODULE
281struct net_device * __init ne2_probe(int unit)
282{
283 struct net_device *dev = alloc_ei_netdev();
284 int err;
285
286 if (!dev)
287 return ERR_PTR(-ENOMEM);
288
289 sprintf(dev->name, "eth%d", unit);
290 netdev_boot_setup_check(dev);
291
292 err = do_ne2_probe(dev);
293 if (err)
294 goto out;
1da177e4 295 return dev;
1da177e4
LT		 296out:
297 free_netdev(dev);
298 return ERR_PTR(err);
299}
300#endif
301
302static int ne2_procinfo(char *buf, int slot, struct net_device *dev)
303{
304 int len=0;
0795af57 305 DECLARE_MAC_BUF(mac);
1da177e4
LT		 306
307 len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" );
308 len += sprintf(buf+len, "Driver written by Wim Dumon ");
6aa20a22 309 len += sprintf(buf+len, "<wimpie@kotnet.org>\n");
1da177e4
LT		 310 len += sprintf(buf+len, "Modified by ");
311 len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n");
312 len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
313 len += sprintf(buf+len, "Based on the original NE2000 drivers\n" );
314 len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr);
315 len += sprintf(buf+len, "IRQ : %d\n", dev->irq);
0795af57 316 len += sprintf(buf+len, "HW addr : %s\n", print_mac(mac, dev->dev_addr));
1da177e4
LT		 317
318 return len;
319}
320
321static int __init ne2_probe1(struct net_device *dev, int slot)
322{
323 int i, base_addr, irq, retval;
324 unsigned char POS;
325 unsigned char SA_prom[32];
326 const char *name = "NE/2";
327 int start_page, stop_page;
328 static unsigned version_printed;
0795af57 329 DECLARE_MAC_BUF(mac);
1da177e4
LT		 330
331 if (ei_debug && version_printed++ == 0)
332 printk(version);
333
334 printk("NE/2 ethercard found in slot %d:", slot);
335
336 /* Read base IO and IRQ from the POS-registers */
337 POS = mca_read_stored_pos(slot, 2);
338 if(!(POS % 2)) {
339 printk(" disabled.\n");
340 return -ENODEV;
341 }
342
343 /* handle different POS register structure for D-Link card */
344
345 if (mca_read_stored_pos(slot, 0) == 0xea) {
346 base_addr = dlink_addresses[(POS >> 5) & 0x03];
347 irq = dlink_irqs[(POS >> 2) & 0x07];
348 }
349 else {
350 i = (POS & 0xE)>>1;
351 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
352 " en zou het moeten werken -> %d\n", i);
353 The above line was for remote testing, thanx to sdog ... */
354 base_addr = addresses[i - 1];
355 irq = irqs[(POS & 0x60)>>5];
356 }
357
358 if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME))
359 return -EBUSY;
360
361#ifdef DEBUG
362 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS,
363 base_addr, irq);
364#endif
365
366#ifndef CRYNWR_WAY
367 /* Reset the card the way they do it in the Crynwr packet driver */
6aa20a22 368 for (i=0; i<8; i++)
1da177e4
LT		 369 outb(0x0, base_addr + NE_RESET);
370 inb(base_addr + NE_RESET);
371 outb(0x21, base_addr + NE_CMD);
372 if (inb(base_addr + NE_CMD) != 0x21) {
373 printk("NE/2 adapter not responding\n");
374 retval = -ENODEV;
375 goto out;
376 }
377
378 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose
379 my RAM is okay. Suppose your memory is broken. Then this test
380 should fail and you won't be able to use your card. But if I do not
381 test, you won't be able to use your card, neither. So this test
382 won't help you. */
383
384#else /* _I_ never tested it this way .. Go ahead and try ...*/
385 /* Reset card. Who knows what dain-bramaged state it was left in. */
6aa20a22 386 {
1da177e4
LT		 387 unsigned long reset_start_time = jiffies;
388
6aa20a22 389 /* DON'T change these to inb_p/outb_p or reset will fail on
1da177e4
LT		 390 clones.. */
391 outb(inb(base_addr + NE_RESET), base_addr + NE_RESET);
392
393 while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0)
ff5688ae 394 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4
LT		 395 printk(" not found (no reset ack).\n");
396 retval = -ENODEV;
397 goto out;
398 }
399
400 outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */
401 }
402#endif
403
404
405 /* Read the 16 bytes of station address PROM.
6aa20a22 406 We must first initialize registers, similar to
1da177e4
LT		 407 NS8390_init(eifdev, 0).
408 We can't reliably read the SAPROM address without this.
409 (I learned the hard way!). */
410 {
6aa20a22
JG		 411 struct {
412 unsigned char value, offset;
1da177e4
LT		 413 } program_seq[] = {
414 /* Select page 0 */
6aa20a22 415 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD},
1da177e4
LT		 416 {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */
417 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
418 {0x00, EN0_RCNTHI},
419 {0x00, EN0_IMR}, /* Mask completion irq. */
420 {0xFF, EN0_ISR},
421 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
422 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
423 {32, EN0_RCNTLO},
424 {0x00, EN0_RCNTHI},
425 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
426 {0x00, EN0_RSARHI},
427 {E8390_RREAD+E8390_START, E8390_CMD},
428 };
429
ff8ac609 430 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
6aa20a22 431 outb_p(program_seq[i].value, base_addr +
1da177e4
LT		 432 program_seq[i].offset);
433
434 }
435 for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) {
436 SA_prom[i] = inb(base_addr + NE_DATAPORT);
437 }
438
439 /* I don't know whether the previous sequence includes the general
440 board reset procedure, so better don't omit it and just overwrite
441 the garbage read from a DE-320 with correct stuff. */
442
443 if (mca_read_stored_pos(slot, 0) == 0xea) {
444 unsigned int v;
445
446 for (i = 0; i < 3; i++) {
447 v = dlink_get_eeprom(i, base_addr);
448 SA_prom[(i << 1) ] = v & 0xff;
449 SA_prom[(i << 1) + 1] = (v >> 8) & 0xff;
450 }
451 }
452
453 start_page = NESM_START_PG;
454 stop_page = NESM_STOP_PG;
455
456 dev->irq=irq;
457
458 /* Snarf the interrupt now. There's no point in waiting since we cannot
459 share and the board will usually be enabled. */
460 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
461 if (retval) {
6aa20a22 462 printk (" unable to get IRQ %d (irqval=%d).\n",
1da177e4
LT		 463 dev->irq, retval);
464 goto out;
465 }
466
467 dev->base_addr = base_addr;
468
0795af57 469 for(i = 0; i < ETHER_ADDR_LEN; i++)
1da177e4 470 dev->dev_addr[i] = SA_prom[i];
1da177e4 471
0795af57
JP		 472 printk(" %s\n", print_mac(mac, dev->dev_addr));
473
474 printk("%s: %s found at %#x, using IRQ %d.\n",
1da177e4
LT		 475 dev->name, name, base_addr, dev->irq);
476
477 mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev);
478
479 ei_status.name = name;
480 ei_status.tx_start_page = start_page;
481 ei_status.stop_page = stop_page;
482 ei_status.word16 = (2 == 2);
483
484 ei_status.rx_start_page = start_page + TX_PAGES;
485#ifdef PACKETBUF_MEMSIZE
486 /* Allow the packet buffer size to be overridden by know-it-alls. */
487 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
488#endif
489
490 ei_status.reset_8390 = &ne_reset_8390;
491 ei_status.block_input = &ne_block_input;
492 ei_status.block_output = &ne_block_output;
493 ei_status.get_8390_hdr = &ne_get_8390_hdr;
6aa20a22 494
1da177e4 495 ei_status.priv = slot;
6aa20a22 496
1da177e4
LT		 497 dev->open = &ne_open;
498 dev->stop = &ne_close;
499#ifdef CONFIG_NET_POLL_CONTROLLER
500 dev->poll_controller = ei_poll;
501#endif
502 NS8390_init(dev, 0);
b1fc5505 503
504 retval = register_netdev(dev);
505 if (retval)
506 goto out1;
1da177e4 507 return 0;
b1fc5505 508out1:
509 mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
510 free_irq(dev->irq, dev);
1da177e4
LT		 511out:
512 release_region(base_addr, NE_IO_EXTENT);
513 return retval;
514}
515
516static int ne_open(struct net_device *dev)
517{
518 ei_open(dev);
519 return 0;
520}
521
522static int ne_close(struct net_device *dev)
523{
524 if (ei_debug > 1)
525 printk("%s: Shutting down ethercard.\n", dev->name);
526 ei_close(dev);
527 return 0;
528}
529
530/* Hard reset the card. This used to pause for the same period that a
531 8390 reset command required, but that shouldn't be necessary. */
532static void ne_reset_8390(struct net_device *dev)
533{
534 unsigned long reset_start_time = jiffies;
535
6aa20a22 536 if (ei_debug > 1)
1da177e4
LT		 537 printk("resetting the 8390 t=%ld...", jiffies);
538
539 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
540 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
541
542 ei_status.txing = 0;
543 ei_status.dmaing = 0;
544
545 /* This check _should_not_ be necessary, omit eventually. */
546 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
ff5688ae 547 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
6aa20a22 548 printk("%s: ne_reset_8390() did not complete.\n",
1da177e4
LT		 549 dev->name);
550 break;
551 }
552 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
553}
554
555/* Grab the 8390 specific header. Similar to the block_input routine, but
556 we don't need to be concerned with ring wrap as the header will be at
557 the start of a page, so we optimize accordingly. */
558
6aa20a22 559static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
1da177e4
LT		 560 int ring_page)
561{
562
563 int nic_base = dev->base_addr;
564
6aa20a22 565 /* This *shouldn't* happen.
1da177e4
LT		 566 If it does, it's the last thing you'll see */
567 if (ei_status.dmaing) {
568 printk("%s: DMAing conflict in ne_get_8390_hdr "
569 "[DMAstat:%d][irqlock:%d].\n",
570 dev->name, ei_status.dmaing, ei_status.irqlock);
571 return;
572 }
573
574 ei_status.dmaing |= 0x01;
575 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
576 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
577 outb_p(0, nic_base + EN0_RCNTHI);
578 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
579 outb_p(ring_page, nic_base + EN0_RSARHI);
580 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
581
582 if (ei_status.word16)
6aa20a22 583 insw(NE_BASE + NE_DATAPORT, hdr,
1da177e4
LT		 584 sizeof(struct e8390_pkt_hdr)>>1);
585 else
6aa20a22 586 insb(NE_BASE + NE_DATAPORT, hdr,
1da177e4
LT		 587 sizeof(struct e8390_pkt_hdr));
588
589 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
590 ei_status.dmaing &= ~0x01;
591}
592
593/* Block input and output, similar to the Crynwr packet driver. If you
594 are porting to a new ethercard, look at the packet driver source for
595 hints. The NEx000 doesn't share the on-board packet memory -- you have
596 to put the packet out through the "remote DMA" dataport using outb. */
597
6aa20a22 598static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb,
1da177e4
LT		 599 int ring_offset)
600{
601#ifdef NE_SANITY_CHECK
602 int xfer_count = count;
603#endif
604 int nic_base = dev->base_addr;
605 char *buf = skb->data;
606
6aa20a22 607 /* This *shouldn't* happen.
1da177e4
LT		 608 If it does, it's the last thing you'll see */
609 if (ei_status.dmaing) {
610 printk("%s: DMAing conflict in ne_block_input "
611 "[DMAstat:%d][irqlock:%d].\n",
612 dev->name, ei_status.dmaing, ei_status.irqlock);
613 return;
614 }
615 ei_status.dmaing |= 0x01;
616 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
617 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
618 outb_p(count >> 8, nic_base + EN0_RCNTHI);
619 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
620 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
621 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
622 if (ei_status.word16) {
623 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
624 if (count & 0x01) {
625 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
626#ifdef NE_SANITY_CHECK
627 xfer_count++;
628#endif
629 }
630 } else {
631 insb(NE_BASE + NE_DATAPORT, buf, count);
632 }
633
634#ifdef NE_SANITY_CHECK
635 /* This was for the ALPHA version only, but enough people have
636 been encountering problems so it is still here. If you see
637 this message you either 1) have a slightly incompatible clone
638 or 2) have noise/speed problems with your bus. */
639 if (ei_debug > 1) { /* DMA termination address check... */
640 int addr, tries = 20;
641 do {
642 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
643 -- it's broken for Rx on some cards! */
644 int high = inb_p(nic_base + EN0_RSARHI);
645 int low = inb_p(nic_base + EN0_RSARLO);
646 addr = (high << 8) + low;
647 if (((ring_offset + xfer_count) & 0xff) == low)
648 break;
649 } while (--tries > 0);
650 if (tries <= 0)
651 printk("%s: RX transfer address mismatch,"
652 "%#4.4x (expected) vs. %#4.4x (actual).\n",
653 dev->name, ring_offset + xfer_count, addr);
654 }
655#endif
656 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
657 ei_status.dmaing &= ~0x01;
658}
659
660static void ne_block_output(struct net_device *dev, int count,
661 const unsigned char *buf, const int start_page)
662{
663 int nic_base = NE_BASE;
664 unsigned long dma_start;
665#ifdef NE_SANITY_CHECK
666 int retries = 0;
667#endif
668
669 /* Round the count up for word writes. Do we need to do this?
670 What effect will an odd byte count have on the 8390?
671 I should check someday. */
672 if (ei_status.word16 && (count & 0x01))
673 count++;
674
6aa20a22 675 /* This *shouldn't* happen.
1da177e4
LT		 676 If it does, it's the last thing you'll see */
677 if (ei_status.dmaing) {
678 printk("%s: DMAing conflict in ne_block_output."
679 "[DMAstat:%d][irqlock:%d]\n",
680 dev->name, ei_status.dmaing, ei_status.irqlock);
681 return;
682 }
683 ei_status.dmaing |= 0x01;
684 /* We should already be in page 0, but to be safe... */
685 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
686
687#ifdef NE_SANITY_CHECK
688retry:
689#endif
690
691#ifdef NE8390_RW_BUGFIX
692 /* Handle the read-before-write bug the same way as the
693 Crynwr packet driver -- the NatSemi method doesn't work.
694 Actually this doesn't always work either, but if you have
695 problems with your NEx000 this is better than nothing! */
696 outb_p(0x42, nic_base + EN0_RCNTLO);
697 outb_p(0x00, nic_base + EN0_RCNTHI);
698 outb_p(0x42, nic_base + EN0_RSARLO);
699 outb_p(0x00, nic_base + EN0_RSARHI);
700 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
701 /* Make certain that the dummy read has occurred. */
702 SLOW_DOWN_IO;
703 SLOW_DOWN_IO;
704 SLOW_DOWN_IO;
705#endif
706
707 outb_p(ENISR_RDC, nic_base + EN0_ISR);
708
709 /* Now the normal output. */
710 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
711 outb_p(count >> 8, nic_base + EN0_RCNTHI);
712 outb_p(0x00, nic_base + EN0_RSARLO);
713 outb_p(start_page, nic_base + EN0_RSARHI);
714
715 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
716 if (ei_status.word16) {
717 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
718 } else {
719 outsb(NE_BASE + NE_DATAPORT, buf, count);
720 }
721
722 dma_start = jiffies;
723
724#ifdef NE_SANITY_CHECK
725 /* This was for the ALPHA version only, but enough people have
726 been encountering problems so it is still here. */
727
728 if (ei_debug > 1) { /* DMA termination address check... */
729 int addr, tries = 20;
730 do {
731 int high = inb_p(nic_base + EN0_RSARHI);
732 int low = inb_p(nic_base + EN0_RSARLO);
733 addr = (high << 8) + low;
734 if ((start_page << 8) + count == addr)
735 break;
736 } while (--tries > 0);
737 if (tries <= 0) {
738 printk("%s: Tx packet transfer address mismatch,"
739 "%#4.4x (expected) vs. %#4.4x (actual).\n",
740 dev->name, (start_page << 8) + count, addr);
741 if (retries++ == 0)
742 goto retry;
743 }
744 }
745#endif
746
747 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
ff5688ae 748 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
1da177e4
LT		 749 printk("%s: timeout waiting for Tx RDC.\n", dev->name);
750 ne_reset_8390(dev);
751 NS8390_init(dev,1);
752 break;
753 }
754
755 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
756 ei_status.dmaing &= ~0x01;
757 return;
758}
759
760
761#ifdef MODULE
762#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
763static struct net_device *dev_ne[MAX_NE_CARDS];
764static int io[MAX_NE_CARDS];
765static int irq[MAX_NE_CARDS];
766static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
767MODULE_LICENSE("GPL");
768
769module_param_array(io, int, NULL, 0);
770module_param_array(irq, int, NULL, 0);
771module_param_array(bad, int, NULL, 0);
772MODULE_PARM_DESC(io, "(ignored)");
773MODULE_PARM_DESC(irq, "(ignored)");
774MODULE_PARM_DESC(bad, "(ignored)");
775
776/* Module code fixed by David Weinehall */
777
5d1f16c6 778int __init init_module(void)
1da177e4
LT		 779{
780 struct net_device *dev;
781 int this_dev, found = 0;
782
783 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
784 dev = alloc_ei_netdev();
785 if (!dev)
786 break;
787 dev->irq = irq[this_dev];
788 dev->mem_end = bad[this_dev];
789 dev->base_addr = io[this_dev];
790 if (do_ne2_probe(dev) == 0) {
b1fc5505 791 dev_ne[found++] = dev;
792 continue;
1da177e4
LT		 793 }
794 free_netdev(dev);
795 break;
796 }
797 if (found)
798 return 0;
799 printk(KERN_WARNING "ne2.c: No NE/2 card found\n");
800 return -ENXIO;
801}
802
64916f1e
DV		 803static void cleanup_card(struct net_device *dev)
804{
805 mca_mark_as_unused(ei_status.priv);
806 mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
807 free_irq(dev->irq, dev);
808 release_region(dev->base_addr, NE_IO_EXTENT);
809}
810
afc8eb46 811void __exit cleanup_module(void)
1da177e4
LT		 812{
813 int this_dev;
814
815 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
816 struct net_device *dev = dev_ne[this_dev];
817 if (dev) {
818 unregister_netdev(dev);
819 cleanup_card(dev);
820 free_netdev(dev);
821 }
822 }
823}
824#endif /* MODULE */
Linux 6.x block layer and io_uring tree(s)