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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 | |
60 | static 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/string.h> |
70 | #include <linux/errno.h> |
71 | #include <linux/init.h> |
72 | #include <linux/mca-legacy.h> |
73 | #include <linux/netdevice.h> |
74 | #include <linux/etherdevice.h> |
75 | #include <linux/skbuff.h> |
76 | #include <linux/bitops.h> |
77 | #include <linux/jiffies.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: */ |
113 | static unsigned int addresses[7] __initdata = |
114 | {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0}; |
115 | static int irqs[4] __initdata = {3, 4, 5, 9}; |
116 | |
117 | /* From the D-Link ADF file: */ |
118 | static unsigned int dlink_addresses[4] __initdata = |
119 | {0x300, 0x320, 0x340, 0x360}; |
120 | static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15}; |
121 | |
122 | struct ne2_adapters_t { |
123 | unsigned int id; |
124 | char *name; |
125 | }; |
126 | |
127 | static 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 | |
135 | extern int netcard_probe(struct net_device *dev); |
136 | |
137 | static int ne2_probe1(struct net_device *dev, int slot); |
138 | |
139 | static void ne_reset_8390(struct net_device *dev); |
140 | static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
141 | int ring_page); |
142 | static void ne_block_input(struct net_device *dev, int count, |
143 | struct sk_buff *skb, int ring_offset); |
144 | static void ne_block_output(struct net_device *dev, const int count, |
145 | const unsigned char *buf, const int start_page); |
146 | |
147 | |
148 | /* |
149 | * special code to read the DE-320's MAC address EEPROM. In contrast to a |
150 | * standard NE design, this is a serial EEPROM (93C46) that has to be read |
151 | * bit by bit. The EEPROM cotrol port at base + 0x1e has the following |
152 | * layout: |
153 | * |
154 | * Bit 0 = Data out (read from EEPROM) |
155 | * Bit 1 = Data in (write to EEPROM) |
156 | * Bit 2 = Clock |
157 | * Bit 3 = Chip Select |
158 | * Bit 7 = ~50 kHz clock for defined delays |
159 | * |
160 | */ |
161 | |
162 | static void __init dlink_put_eeprom(unsigned char value, unsigned int addr) |
163 | { |
164 | int z; |
165 | unsigned char v1, v2; |
166 | |
167 | /* write the value to the NIC EEPROM register */ |
168 | |
169 | outb(value, addr + 0x1e); |
170 | |
171 | /* now wait the clock line to toggle twice. Effectively, we are |
172 | waiting (at least) for one clock cycle */ |
173 | |
174 | for (z = 0; z < 2; z++) { |
175 | do { |
176 | v1 = inb(addr + 0x1e); |
177 | v2 = inb(addr + 0x1e); |
178 | } |
179 | while (!((v1 ^ v2) & 0x80)); |
180 | } |
181 | } |
182 | |
183 | static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr) |
184 | { |
185 | /* shift data bit into correct position */ |
186 | |
187 | bit = bit << 1; |
188 | |
189 | /* write value, keep clock line high for two cycles */ |
190 | |
191 | dlink_put_eeprom(0x09 | bit, addr); |
192 | dlink_put_eeprom(0x0d | bit, addr); |
193 | dlink_put_eeprom(0x0d | bit, addr); |
194 | dlink_put_eeprom(0x09 | bit, addr); |
195 | } |
196 | |
197 | static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr) |
198 | { |
199 | int z; |
200 | |
201 | /* adjust bits so that they are left-aligned in a 16-bit-word */ |
202 | |
203 | value = value << (16 - len); |
204 | |
205 | /* shift bits out to the EEPROM */ |
206 | |
207 | for (z = 0; z < len; z++) { |
208 | dlink_send_eeprom_bit((value & 0x8000) >> 15, addr); |
209 | value = value << 1; |
210 | } |
211 | } |
212 | |
213 | static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr) |
214 | { |
215 | int z; |
216 | unsigned int value = 0; |
217 | |
218 | /* pull the CS line low for a moment. This resets the EEPROM- |
219 | internal logic, and makes it ready for a new command. */ |
220 | |
221 | dlink_put_eeprom(0x01, addr); |
222 | dlink_put_eeprom(0x09, addr); |
223 | |
224 | /* send one start bit, read command (1 - 0), plus the address to |
225 | the EEPROM */ |
226 | |
227 | dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr); |
228 | |
229 | /* get the data word. We clock by sending 0s to the EEPROM, which |
230 | get ignored during the read process */ |
231 | |
232 | for (z = 0; z < 16; z++) { |
233 | dlink_send_eeprom_bit(0, addr); |
234 | value = (value << 1) | (inb(addr + 0x1e) & 0x01); |
235 | } |
236 | |
237 | return value; |
238 | } |
239 | |
240 | /* |
241 | * Note that at boot, this probe only picks up one card at a time. |
242 | */ |
243 | |
244 | static int __init do_ne2_probe(struct net_device *dev) |
245 | { |
246 | static int current_mca_slot = -1; |
247 | int i; |
248 | int adapter_found = 0; |
249 | |
250 | /* Do not check any supplied i/o locations. |
251 | POS registers usually don't fail :) */ |
252 | |
253 | /* MCA cards have POS registers. |
254 | Autodetecting MCA cards is extremely simple. |
255 | Just search for the card. */ |
256 | |
257 | for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) { |
258 | current_mca_slot = |
259 | mca_find_unused_adapter(ne2_adapters[i].id, 0); |
260 | |
261 | if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) { |
262 | int res; |
263 | mca_set_adapter_name(current_mca_slot, |
264 | ne2_adapters[i].name); |
265 | mca_mark_as_used(current_mca_slot); |
266 | |
267 | res = ne2_probe1(dev, current_mca_slot); |
268 | if (res) |
269 | mca_mark_as_unused(current_mca_slot); |
270 | return res; |
271 | } |
272 | } |
273 | return -ENODEV; |
274 | } |
275 | |
276 | #ifndef MODULE |
277 | struct net_device * __init ne2_probe(int unit) |
278 | { |
279 | struct net_device *dev = alloc_eip_netdev(); |
280 | int err; |
281 | |
282 | if (!dev) |
283 | return ERR_PTR(-ENOMEM); |
284 | |
285 | sprintf(dev->name, "eth%d", unit); |
286 | netdev_boot_setup_check(dev); |
287 | |
288 | err = do_ne2_probe(dev); |
289 | if (err) |
290 | goto out; |
291 | return dev; |
292 | out: |
293 | free_netdev(dev); |
294 | return ERR_PTR(err); |
295 | } |
296 | #endif |
297 | |
298 | static int ne2_procinfo(char *buf, int slot, struct net_device *dev) |
299 | { |
300 | int len=0; |
301 | |
302 | len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" ); |
303 | len += sprintf(buf+len, "Driver written by Wim Dumon "); |
304 | len += sprintf(buf+len, "<wimpie@kotnet.org>\n"); |
305 | len += sprintf(buf+len, "Modified by "); |
306 | len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n"); |
307 | len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n"); |
308 | len += sprintf(buf+len, "Based on the original NE2000 drivers\n" ); |
309 | len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr); |
310 | len += sprintf(buf+len, "IRQ : %d\n", dev->irq); |
311 | len += sprintf(buf+len, "HW addr : %pM\n", dev->dev_addr); |
312 | |
313 | return len; |
314 | } |
315 | |
316 | static int __init ne2_probe1(struct net_device *dev, int slot) |
317 | { |
318 | int i, base_addr, irq, retval; |
319 | unsigned char POS; |
320 | unsigned char SA_prom[32]; |
321 | const char *name = "NE/2"; |
322 | int start_page, stop_page; |
323 | static unsigned version_printed; |
324 | |
325 | if (ei_debug && version_printed++ == 0) |
326 | printk(version); |
327 | |
328 | printk("NE/2 ethercard found in slot %d:", slot); |
329 | |
330 | /* Read base IO and IRQ from the POS-registers */ |
331 | POS = mca_read_stored_pos(slot, 2); |
332 | if(!(POS % 2)) { |
333 | printk(" disabled.\n"); |
334 | return -ENODEV; |
335 | } |
336 | |
337 | /* handle different POS register structure for D-Link card */ |
338 | |
339 | if (mca_read_stored_pos(slot, 0) == 0xea) { |
340 | base_addr = dlink_addresses[(POS >> 5) & 0x03]; |
341 | irq = dlink_irqs[(POS >> 2) & 0x07]; |
342 | } |
343 | else { |
344 | i = (POS & 0xE)>>1; |
345 | /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0" |
346 | " en zou het moeten werken -> %d\n", i); |
347 | The above line was for remote testing, thanx to sdog ... */ |
348 | base_addr = addresses[i - 1]; |
349 | irq = irqs[(POS & 0x60)>>5]; |
350 | } |
351 | |
352 | if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME)) |
353 | return -EBUSY; |
354 | |
355 | #ifdef DEBUG |
356 | printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS, |
357 | base_addr, irq); |
358 | #endif |
359 | |
360 | #ifndef CRYNWR_WAY |
361 | /* Reset the card the way they do it in the Crynwr packet driver */ |
362 | for (i=0; i<8; i++) |
363 | outb(0x0, base_addr + NE_RESET); |
364 | inb(base_addr + NE_RESET); |
365 | outb(0x21, base_addr + NE_CMD); |
366 | if (inb(base_addr + NE_CMD) != 0x21) { |
367 | printk("NE/2 adapter not responding\n"); |
368 | retval = -ENODEV; |
369 | goto out; |
370 | } |
371 | |
372 | /* In the crynwr sources they do a RAM-test here. I skip it. I suppose |
373 | my RAM is okay. Suppose your memory is broken. Then this test |
374 | should fail and you won't be able to use your card. But if I do not |
375 | test, you won't be able to use your card, neither. So this test |
376 | won't help you. */ |
377 | |
378 | #else /* _I_ never tested it this way .. Go ahead and try ...*/ |
379 | /* Reset card. Who knows what dain-bramaged state it was left in. */ |
380 | { |
381 | unsigned long reset_start_time = jiffies; |
382 | |
383 | /* DON'T change these to inb_p/outb_p or reset will fail on |
384 | clones.. */ |
385 | outb(inb(base_addr + NE_RESET), base_addr + NE_RESET); |
386 | |
387 | while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0) |
388 | if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
389 | printk(" not found (no reset ack).\n"); |
390 | retval = -ENODEV; |
391 | goto out; |
392 | } |
393 | |
394 | outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */ |
395 | } |
396 | #endif |
397 | |
398 | |
399 | /* Read the 16 bytes of station address PROM. |
400 | We must first initialize registers, similar to |
401 | NS8390p_init(eifdev, 0). |
402 | We can't reliably read the SAPROM address without this. |
403 | (I learned the hard way!). */ |
404 | { |
405 | struct { |
406 | unsigned char value, offset; |
407 | } program_seq[] = { |
408 | /* Select page 0 */ |
409 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, |
410 | {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */ |
411 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ |
412 | {0x00, EN0_RCNTHI}, |
413 | {0x00, EN0_IMR}, /* Mask completion irq. */ |
414 | {0xFF, EN0_ISR}, |
415 | {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ |
416 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ |
417 | {32, EN0_RCNTLO}, |
418 | {0x00, EN0_RCNTHI}, |
419 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ |
420 | {0x00, EN0_RSARHI}, |
421 | {E8390_RREAD+E8390_START, E8390_CMD}, |
422 | }; |
423 | |
424 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
425 | outb_p(program_seq[i].value, base_addr + |
426 | program_seq[i].offset); |
427 | |
428 | } |
429 | for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) { |
430 | SA_prom[i] = inb(base_addr + NE_DATAPORT); |
431 | } |
432 | |
433 | /* I don't know whether the previous sequence includes the general |
434 | board reset procedure, so better don't omit it and just overwrite |
435 | the garbage read from a DE-320 with correct stuff. */ |
436 | |
437 | if (mca_read_stored_pos(slot, 0) == 0xea) { |
438 | unsigned int v; |
439 | |
440 | for (i = 0; i < 3; i++) { |
441 | v = dlink_get_eeprom(i, base_addr); |
442 | SA_prom[(i << 1) ] = v & 0xff; |
443 | SA_prom[(i << 1) + 1] = (v >> 8) & 0xff; |
444 | } |
445 | } |
446 | |
447 | start_page = NESM_START_PG; |
448 | stop_page = NESM_STOP_PG; |
449 | |
450 | dev->irq=irq; |
451 | |
452 | /* Snarf the interrupt now. There's no point in waiting since we cannot |
453 | share and the board will usually be enabled. */ |
454 | retval = request_irq(dev->irq, eip_interrupt, 0, DRV_NAME, dev); |
455 | if (retval) { |
456 | printk (" unable to get IRQ %d (irqval=%d).\n", |
457 | dev->irq, retval); |
458 | goto out; |
459 | } |
460 | |
461 | dev->base_addr = base_addr; |
462 | |
463 | for(i = 0; i < ETHER_ADDR_LEN; i++) |
464 | dev->dev_addr[i] = SA_prom[i]; |
465 | |
466 | printk(" %pM\n", dev->dev_addr); |
467 | |
468 | printk("%s: %s found at %#x, using IRQ %d.\n", |
469 | dev->name, name, base_addr, dev->irq); |
470 | |
471 | mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev); |
472 | |
473 | ei_status.name = name; |
474 | ei_status.tx_start_page = start_page; |
475 | ei_status.stop_page = stop_page; |
476 | ei_status.word16 = (2 == 2); |
477 | |
478 | ei_status.rx_start_page = start_page + TX_PAGES; |
479 | #ifdef PACKETBUF_MEMSIZE |
480 | /* Allow the packet buffer size to be overridden by know-it-alls. */ |
481 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; |
482 | #endif |
483 | |
484 | ei_status.reset_8390 = &ne_reset_8390; |
485 | ei_status.block_input = &ne_block_input; |
486 | ei_status.block_output = &ne_block_output; |
487 | ei_status.get_8390_hdr = &ne_get_8390_hdr; |
488 | |
489 | ei_status.priv = slot; |
490 | |
491 | dev->netdev_ops = &eip_netdev_ops; |
492 | NS8390p_init(dev, 0); |
493 | |
494 | retval = register_netdev(dev); |
495 | if (retval) |
496 | goto out1; |
497 | return 0; |
498 | out1: |
499 | mca_set_adapter_procfn( ei_status.priv, NULL, NULL); |
500 | free_irq(dev->irq, dev); |
501 | out: |
502 | release_region(base_addr, NE_IO_EXTENT); |
503 | return retval; |
504 | } |
505 | |
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) |
509 | { |
510 | unsigned long reset_start_time = jiffies; |
511 | |
512 | if (ei_debug > 1) |
513 | printk("resetting the 8390 t=%ld...", jiffies); |
514 | |
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); |
517 | |
518 | ei_status.txing = 0; |
519 | ei_status.dmaing = 0; |
520 | |
521 | /* This check _should_not_ be necessary, omit eventually. */ |
522 | while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) |
523 | if (time_after(jiffies, reset_start_time + 2*HZ/100)) { |
524 | printk("%s: ne_reset_8390() did not complete.\n", |
525 | dev->name); |
526 | break; |
527 | } |
528 | outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ |
529 | } |
530 | |
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. */ |
534 | |
535 | static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
536 | int ring_page) |
537 | { |
538 | |
539 | int nic_base = dev->base_addr; |
540 | |
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); |
547 | return; |
548 | } |
549 | |
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); |
557 | |
558 | if (ei_status.word16) |
559 | insw(NE_BASE + NE_DATAPORT, hdr, |
560 | sizeof(struct e8390_pkt_hdr)>>1); |
561 | else |
562 | insb(NE_BASE + NE_DATAPORT, hdr, |
563 | sizeof(struct e8390_pkt_hdr)); |
564 | |
565 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
566 | ei_status.dmaing &= ~0x01; |
567 | } |
568 | |
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. */ |
573 | |
574 | static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, |
575 | int ring_offset) |
576 | { |
577 | #ifdef NE_SANITY_CHECK |
578 | int xfer_count = count; |
579 | #endif |
580 | int nic_base = dev->base_addr; |
581 | char *buf = skb->data; |
582 | |
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); |
589 | return; |
590 | } |
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); |
600 | if (count & 0x01) { |
601 | buf[count-1] = inb(NE_BASE + NE_DATAPORT); |
602 | #ifdef NE_SANITY_CHECK |
603 | xfer_count++; |
604 | #endif |
605 | } |
606 | } else { |
607 | insb(NE_BASE + NE_DATAPORT, buf, count); |
608 | } |
609 | |
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; |
617 | do { |
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) |
624 | break; |
625 | } while (--tries > 0); |
626 | if (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); |
630 | } |
631 | #endif |
632 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
633 | ei_status.dmaing &= ~0x01; |
634 | } |
635 | |
636 | static void ne_block_output(struct net_device *dev, int count, |
637 | const unsigned char *buf, const int start_page) |
638 | { |
639 | int nic_base = NE_BASE; |
640 | unsigned long dma_start; |
641 | #ifdef NE_SANITY_CHECK |
642 | int retries = 0; |
643 | #endif |
644 | |
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)) |
649 | count++; |
650 | |
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); |
657 | return; |
658 | } |
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); |
662 | |
663 | #ifdef NE_SANITY_CHECK |
664 | retry: |
665 | #endif |
666 | |
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. */ |
678 | SLOW_DOWN_IO; |
679 | SLOW_DOWN_IO; |
680 | SLOW_DOWN_IO; |
681 | #endif |
682 | |
683 | outb_p(ENISR_RDC, nic_base + EN0_ISR); |
684 | |
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); |
690 | |
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); |
694 | } else { |
695 | outsb(NE_BASE + NE_DATAPORT, buf, count); |
696 | } |
697 | |
698 | dma_start = jiffies; |
699 | |
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. */ |
703 | |
704 | if (ei_debug > 1) { /* DMA termination address check... */ |
705 | int addr, tries = 20; |
706 | do { |
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) |
711 | break; |
712 | } while (--tries > 0); |
713 | if (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); |
717 | if (retries++ == 0) |
718 | goto retry; |
719 | } |
720 | } |
721 | #endif |
722 | |
723 | while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) |
724 | if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ |
725 | printk("%s: timeout waiting for Tx RDC.\n", dev->name); |
726 | ne_reset_8390(dev); |
727 | NS8390p_init(dev, 1); |
728 | break; |
729 | } |
730 | |
731 | outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
732 | ei_status.dmaing &= ~0x01; |
733 | return; |
734 | } |
735 | |
736 | |
737 | #ifdef MODULE |
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"); |
744 | |
745 | module_param_array(io, int, NULL, 0); |
746 | module_param_array(irq, int, NULL, 0); |
747 | module_param_array(bad, int, NULL, 0); |
748 | MODULE_PARM_DESC(io, "(ignored)"); |
749 | MODULE_PARM_DESC(irq, "(ignored)"); |
750 | MODULE_PARM_DESC(bad, "(ignored)"); |
751 | |
752 | /* Module code fixed by David Weinehall */ |
753 | |
754 | int __init init_module(void) |
755 | { |
756 | struct net_device *dev; |
757 | int this_dev, found = 0; |
758 | |
759 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { |
760 | dev = alloc_eip_netdev(); |
761 | if (!dev) |
762 | break; |
763 | dev->irq = irq[this_dev]; |
764 | dev->mem_end = bad[this_dev]; |
765 | dev->base_addr = io[this_dev]; |
766 | if (do_ne2_probe(dev) == 0) { |
767 | dev_ne[found++] = dev; |
768 | continue; |
769 | } |
770 | free_netdev(dev); |
771 | break; |
772 | } |
773 | if (found) |
774 | return 0; |
775 | printk(KERN_WARNING "ne2.c: No NE/2 card found\n"); |
776 | return -ENXIO; |
777 | } |
778 | |
779 | static void cleanup_card(struct net_device *dev) |
780 | { |
781 | mca_mark_as_unused(ei_status.priv); |
782 | mca_set_adapter_procfn( ei_status.priv, NULL, NULL); |
783 | free_irq(dev->irq, dev); |
784 | release_region(dev->base_addr, NE_IO_EXTENT); |
785 | } |
786 | |
787 | void __exit cleanup_module(void) |
788 | { |
789 | int this_dev; |
790 | |
791 | for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { |
792 | struct net_device *dev = dev_ne[this_dev]; |
793 | if (dev) { |
794 | unregister_netdev(dev); |
795 | cleanup_card(dev); |
796 | free_netdev(dev); |
797 | } |
798 | } |
799 | } |
800 | #endif /* MODULE */ |
801 |
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