Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Linux Ethernet device driver for the 3Com Etherlink Plus (3C505) | |
3 | * By Craig Southeren, Juha Laiho and Philip Blundell | |
4 | * | |
5 | * 3c505.c This module implements an interface to the 3Com | |
6 | * Etherlink Plus (3c505) Ethernet card. Linux device | |
7 | * driver interface reverse engineered from the Linux 3C509 | |
8 | * device drivers. Some 3C505 information gleaned from | |
9 | * the Crynwr packet driver. Still this driver would not | |
10 | * be here without 3C505 technical reference provided by | |
11 | * 3Com. | |
12 | * | |
13 | * $Id: 3c505.c,v 1.10 1996/04/16 13:06:27 phil Exp $ | |
14 | * | |
15 | * Authors: Linux 3c505 device driver by | |
16 | * Craig Southeren, <craigs@ineluki.apana.org.au> | |
17 | * Final debugging by | |
18 | * Andrew Tridgell, <tridge@nimbus.anu.edu.au> | |
19 | * Auto irq/address, tuning, cleanup and v1.1.4+ kernel mods by | |
20 | * Juha Laiho, <jlaiho@ichaos.nullnet.fi> | |
21 | * Linux 3C509 driver by | |
22 | * Donald Becker, <becker@super.org> | |
23 | * (Now at <becker@scyld.com>) | |
24 | * Crynwr packet driver by | |
25 | * Krishnan Gopalan and Gregg Stefancik, | |
26 | * Clemson University Engineering Computer Operations. | |
27 | * Portions of the code have been adapted from the 3c505 | |
28 | * driver for NCSA Telnet by Bruce Orchard and later | |
29 | * modified by Warren Van Houten and krus@diku.dk. | |
30 | * 3C505 technical information provided by | |
31 | * Terry Murphy, of 3Com Network Adapter Division | |
32 | * Linux 1.3.0 changes by | |
33 | * Alan Cox <Alan.Cox@linux.org> | |
34 | * More debugging, DMA support, currently maintained by | |
35 | * Philip Blundell <philb@gnu.org> | |
36 | * Multicard/soft configurable dma channel/rev 2 hardware support | |
37 | * by Christopher Collins <ccollins@pcug.org.au> | |
38 | * Ethtool support (jgarzik), 11/17/2001 | |
39 | */ | |
40 | ||
41 | #define DRV_NAME "3c505" | |
42 | #define DRV_VERSION "1.10a" | |
43 | ||
44 | ||
45 | /* Theory of operation: | |
46 | * | |
47 | * The 3c505 is quite an intelligent board. All communication with it is done | |
48 | * by means of Primary Command Blocks (PCBs); these are transferred using PIO | |
49 | * through the command register. The card has 256k of on-board RAM, which is | |
50 | * used to buffer received packets. It might seem at first that more buffers | |
51 | * are better, but in fact this isn't true. From my tests, it seems that | |
52 | * more than about 10 buffers are unnecessary, and there is a noticeable | |
53 | * performance hit in having more active on the card. So the majority of the | |
54 | * card's memory isn't, in fact, used. Sadly, the card only has one transmit | |
55 | * buffer and, short of loading our own firmware into it (which is what some | |
56 | * drivers resort to) there's nothing we can do about this. | |
57 | * | |
58 | * We keep up to 4 "receive packet" commands active on the board at a time. | |
59 | * When a packet comes in, so long as there is a receive command active, the | |
60 | * board will send us a "packet received" PCB and then add the data for that | |
61 | * packet to the DMA queue. If a DMA transfer is not already in progress, we | |
62 | * set one up to start uploading the data. We have to maintain a list of | |
63 | * backlogged receive packets, because the card may decide to tell us about | |
64 | * a newly-arrived packet at any time, and we may not be able to start a DMA | |
65 | * transfer immediately (ie one may already be going on). We can't NAK the | |
66 | * PCB, because then it would throw the packet away. | |
67 | * | |
68 | * Trying to send a PCB to the card at the wrong moment seems to have bad | |
69 | * effects. If we send it a transmit PCB while a receive DMA is happening, | |
70 | * it will just NAK the PCB and so we will have wasted our time. Worse, it | |
71 | * sometimes seems to interrupt the transfer. The majority of the low-level | |
72 | * code is protected by one huge semaphore -- "busy" -- which is set whenever | |
73 | * it probably isn't safe to do anything to the card. The receive routine | |
74 | * must gain a lock on "busy" before it can start a DMA transfer, and the | |
75 | * transmit routine must gain a lock before it sends the first PCB to the card. | |
76 | * The send_pcb() routine also has an internal semaphore to protect it against | |
77 | * being re-entered (which would be disastrous) -- this is needed because | |
78 | * several things can happen asynchronously (re-priming the receiver and | |
79 | * asking the card for statistics, for example). send_pcb() will also refuse | |
80 | * to talk to the card at all if a DMA upload is happening. The higher-level | |
81 | * networking code will reschedule a later retry if some part of the driver | |
82 | * is blocked. In practice, this doesn't seem to happen very often. | |
83 | */ | |
84 | ||
85 | /* This driver may now work with revision 2.x hardware, since all the read | |
86 | * operations on the HCR have been removed (we now keep our own softcopy). | |
87 | * But I don't have an old card to test it on. | |
88 | * | |
89 | * This has had the bad effect that the autoprobe routine is now a bit | |
90 | * less friendly to other devices. However, it was never very good. | |
91 | * before, so I doubt it will hurt anybody. | |
92 | */ | |
93 | ||
94 | /* The driver is a mess. I took Craig's and Juha's code, and hacked it firstly | |
95 | * to make it more reliable, and secondly to add DMA mode. Many things could | |
96 | * probably be done better; the concurrency protection is particularly awful. | |
97 | */ | |
98 | ||
99 | #include <linux/module.h> | |
100 | #include <linux/kernel.h> | |
101 | #include <linux/string.h> | |
102 | #include <linux/interrupt.h> | |
103 | #include <linux/errno.h> | |
104 | #include <linux/in.h> | |
105 | #include <linux/slab.h> | |
106 | #include <linux/ioport.h> | |
107 | #include <linux/spinlock.h> | |
108 | #include <linux/ethtool.h> | |
109 | #include <linux/delay.h> | |
110 | #include <linux/bitops.h> | |
111 | ||
112 | #include <asm/uaccess.h> | |
113 | #include <asm/io.h> | |
114 | #include <asm/dma.h> | |
115 | ||
116 | #include <linux/netdevice.h> | |
117 | #include <linux/etherdevice.h> | |
118 | #include <linux/skbuff.h> | |
119 | #include <linux/init.h> | |
120 | ||
121 | #include "3c505.h" | |
122 | ||
123 | /********************************************************* | |
124 | * | |
125 | * define debug messages here as common strings to reduce space | |
126 | * | |
127 | *********************************************************/ | |
128 | ||
129 | static const char filename[] = __FILE__; | |
130 | ||
131 | static const char timeout_msg[] = "*** timeout at %s:%s (line %d) ***\n"; | |
132 | #define TIMEOUT_MSG(lineno) \ | |
133 | printk(timeout_msg, filename,__FUNCTION__,(lineno)) | |
134 | ||
135 | static const char invalid_pcb_msg[] = | |
136 | "*** invalid pcb length %d at %s:%s (line %d) ***\n"; | |
137 | #define INVALID_PCB_MSG(len) \ | |
138 | printk(invalid_pcb_msg, (len),filename,__FUNCTION__,__LINE__) | |
139 | ||
140 | static char search_msg[] __initdata = KERN_INFO "%s: Looking for 3c505 adapter at address %#x..."; | |
141 | ||
142 | static char stilllooking_msg[] __initdata = "still looking..."; | |
143 | ||
144 | static char found_msg[] __initdata = "found.\n"; | |
145 | ||
146 | static char notfound_msg[] __initdata = "not found (reason = %d)\n"; | |
147 | ||
148 | static char couldnot_msg[] __initdata = KERN_INFO "%s: 3c505 not found\n"; | |
149 | ||
150 | /********************************************************* | |
151 | * | |
152 | * various other debug stuff | |
153 | * | |
154 | *********************************************************/ | |
155 | ||
156 | #ifdef ELP_DEBUG | |
157 | static int elp_debug = ELP_DEBUG; | |
158 | #else | |
159 | static int elp_debug; | |
160 | #endif | |
161 | #define debug elp_debug | |
162 | ||
163 | /* | |
164 | * 0 = no messages (well, some) | |
165 | * 1 = messages when high level commands performed | |
166 | * 2 = messages when low level commands performed | |
167 | * 3 = messages when interrupts received | |
168 | */ | |
169 | ||
170 | /***************************************************************** | |
171 | * | |
172 | * useful macros | |
173 | * | |
174 | *****************************************************************/ | |
175 | ||
176 | #ifndef TRUE | |
177 | #define TRUE 1 | |
178 | #endif | |
179 | ||
180 | #ifndef FALSE | |
181 | #define FALSE 0 | |
182 | #endif | |
183 | ||
184 | ||
185 | /***************************************************************** | |
186 | * | |
187 | * List of I/O-addresses we try to auto-sense | |
188 | * Last element MUST BE 0! | |
189 | *****************************************************************/ | |
190 | ||
191 | static int addr_list[] __initdata = {0x300, 0x280, 0x310, 0}; | |
192 | ||
193 | /* Dma Memory related stuff */ | |
194 | ||
195 | static unsigned long dma_mem_alloc(int size) | |
196 | { | |
197 | int order = get_order(size); | |
198 | return __get_dma_pages(GFP_KERNEL, order); | |
199 | } | |
200 | ||
201 | ||
202 | /***************************************************************** | |
203 | * | |
204 | * Functions for I/O (note the inline !) | |
205 | * | |
206 | *****************************************************************/ | |
207 | ||
208 | static inline unsigned char inb_status(unsigned int base_addr) | |
209 | { | |
210 | return inb(base_addr + PORT_STATUS); | |
211 | } | |
212 | ||
213 | static inline int inb_command(unsigned int base_addr) | |
214 | { | |
215 | return inb(base_addr + PORT_COMMAND); | |
216 | } | |
217 | ||
218 | static inline void outb_control(unsigned char val, struct net_device *dev) | |
219 | { | |
220 | outb(val, dev->base_addr + PORT_CONTROL); | |
221 | ((elp_device *)(dev->priv))->hcr_val = val; | |
222 | } | |
223 | ||
224 | #define HCR_VAL(x) (((elp_device *)((x)->priv))->hcr_val) | |
225 | ||
226 | static inline void outb_command(unsigned char val, unsigned int base_addr) | |
227 | { | |
228 | outb(val, base_addr + PORT_COMMAND); | |
229 | } | |
230 | ||
231 | static inline unsigned int backlog_next(unsigned int n) | |
232 | { | |
233 | return (n + 1) % BACKLOG_SIZE; | |
234 | } | |
235 | ||
236 | /***************************************************************** | |
237 | * | |
238 | * useful functions for accessing the adapter | |
239 | * | |
240 | *****************************************************************/ | |
241 | ||
242 | /* | |
243 | * use this routine when accessing the ASF bits as they are | |
244 | * changed asynchronously by the adapter | |
245 | */ | |
246 | ||
247 | /* get adapter PCB status */ | |
248 | #define GET_ASF(addr) \ | |
249 | (get_status(addr)&ASF_PCB_MASK) | |
250 | ||
251 | static inline int get_status(unsigned int base_addr) | |
252 | { | |
253 | unsigned long timeout = jiffies + 10*HZ/100; | |
254 | register int stat1; | |
255 | do { | |
256 | stat1 = inb_status(base_addr); | |
257 | } while (stat1 != inb_status(base_addr) && time_before(jiffies, timeout)); | |
258 | if (time_after_eq(jiffies, timeout)) | |
259 | TIMEOUT_MSG(__LINE__); | |
260 | return stat1; | |
261 | } | |
262 | ||
263 | static inline void set_hsf(struct net_device *dev, int hsf) | |
264 | { | |
265 | elp_device *adapter = dev->priv; | |
266 | unsigned long flags; | |
267 | ||
268 | spin_lock_irqsave(&adapter->lock, flags); | |
269 | outb_control((HCR_VAL(dev) & ~HSF_PCB_MASK) | hsf, dev); | |
270 | spin_unlock_irqrestore(&adapter->lock, flags); | |
271 | } | |
272 | ||
273 | static int start_receive(struct net_device *, pcb_struct *); | |
274 | ||
77933d72 | 275 | static inline void adapter_reset(struct net_device *dev) |
1da177e4 LT |
276 | { |
277 | unsigned long timeout; | |
278 | elp_device *adapter = dev->priv; | |
279 | unsigned char orig_hcr = adapter->hcr_val; | |
280 | ||
281 | outb_control(0, dev); | |
282 | ||
283 | if (inb_status(dev->base_addr) & ACRF) { | |
284 | do { | |
285 | inb_command(dev->base_addr); | |
286 | timeout = jiffies + 2*HZ/100; | |
287 | while (time_before_eq(jiffies, timeout) && !(inb_status(dev->base_addr) & ACRF)); | |
288 | } while (inb_status(dev->base_addr) & ACRF); | |
289 | set_hsf(dev, HSF_PCB_NAK); | |
290 | } | |
291 | outb_control(adapter->hcr_val | ATTN | DIR, dev); | |
292 | mdelay(10); | |
293 | outb_control(adapter->hcr_val & ~ATTN, dev); | |
294 | mdelay(10); | |
295 | outb_control(adapter->hcr_val | FLSH, dev); | |
296 | mdelay(10); | |
297 | outb_control(adapter->hcr_val & ~FLSH, dev); | |
298 | mdelay(10); | |
299 | ||
300 | outb_control(orig_hcr, dev); | |
301 | if (!start_receive(dev, &adapter->tx_pcb)) | |
302 | printk(KERN_ERR "%s: start receive command failed \n", dev->name); | |
303 | } | |
304 | ||
305 | /* Check to make sure that a DMA transfer hasn't timed out. This should | |
306 | * never happen in theory, but seems to occur occasionally if the card gets | |
307 | * prodded at the wrong time. | |
308 | */ | |
309 | static inline void check_3c505_dma(struct net_device *dev) | |
310 | { | |
311 | elp_device *adapter = dev->priv; | |
312 | if (adapter->dmaing && time_after(jiffies, adapter->current_dma.start_time + 10)) { | |
313 | unsigned long flags, f; | |
314 | printk(KERN_ERR "%s: DMA %s timed out, %d bytes left\n", dev->name, adapter->current_dma.direction ? "download" : "upload", get_dma_residue(dev->dma)); | |
315 | spin_lock_irqsave(&adapter->lock, flags); | |
316 | adapter->dmaing = 0; | |
317 | adapter->busy = 0; | |
318 | ||
319 | f=claim_dma_lock(); | |
320 | disable_dma(dev->dma); | |
321 | release_dma_lock(f); | |
322 | ||
323 | if (adapter->rx_active) | |
324 | adapter->rx_active--; | |
325 | outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev); | |
326 | spin_unlock_irqrestore(&adapter->lock, flags); | |
327 | } | |
328 | } | |
329 | ||
330 | /* Primitive functions used by send_pcb() */ | |
331 | static inline unsigned int send_pcb_slow(unsigned int base_addr, unsigned char byte) | |
332 | { | |
333 | unsigned long timeout; | |
334 | outb_command(byte, base_addr); | |
335 | for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) { | |
336 | if (inb_status(base_addr) & HCRE) | |
337 | return FALSE; | |
338 | } | |
339 | printk(KERN_WARNING "3c505: send_pcb_slow timed out\n"); | |
340 | return TRUE; | |
341 | } | |
342 | ||
343 | static inline unsigned int send_pcb_fast(unsigned int base_addr, unsigned char byte) | |
344 | { | |
345 | unsigned int timeout; | |
346 | outb_command(byte, base_addr); | |
347 | for (timeout = 0; timeout < 40000; timeout++) { | |
348 | if (inb_status(base_addr) & HCRE) | |
349 | return FALSE; | |
350 | } | |
351 | printk(KERN_WARNING "3c505: send_pcb_fast timed out\n"); | |
352 | return TRUE; | |
353 | } | |
354 | ||
355 | /* Check to see if the receiver needs restarting, and kick it if so */ | |
356 | static inline void prime_rx(struct net_device *dev) | |
357 | { | |
358 | elp_device *adapter = dev->priv; | |
359 | while (adapter->rx_active < ELP_RX_PCBS && netif_running(dev)) { | |
360 | if (!start_receive(dev, &adapter->itx_pcb)) | |
361 | break; | |
362 | } | |
363 | } | |
364 | ||
365 | /***************************************************************** | |
366 | * | |
367 | * send_pcb | |
368 | * Send a PCB to the adapter. | |
369 | * | |
370 | * output byte to command reg --<--+ | |
371 | * wait until HCRE is non zero | | |
372 | * loop until all bytes sent -->--+ | |
373 | * set HSF1 and HSF2 to 1 | |
374 | * output pcb length | |
375 | * wait until ASF give ACK or NAK | |
376 | * set HSF1 and HSF2 to 0 | |
377 | * | |
378 | *****************************************************************/ | |
379 | ||
380 | /* This can be quite slow -- the adapter is allowed to take up to 40ms | |
381 | * to respond to the initial interrupt. | |
382 | * | |
383 | * We run initially with interrupts turned on, but with a semaphore set | |
384 | * so that nobody tries to re-enter this code. Once the first byte has | |
385 | * gone through, we turn interrupts off and then send the others (the | |
386 | * timeout is reduced to 500us). | |
387 | */ | |
388 | ||
389 | static int send_pcb(struct net_device *dev, pcb_struct * pcb) | |
390 | { | |
391 | int i; | |
392 | unsigned long timeout; | |
393 | elp_device *adapter = dev->priv; | |
394 | unsigned long flags; | |
395 | ||
396 | check_3c505_dma(dev); | |
397 | ||
398 | if (adapter->dmaing && adapter->current_dma.direction == 0) | |
399 | return FALSE; | |
400 | ||
401 | /* Avoid contention */ | |
402 | if (test_and_set_bit(1, &adapter->send_pcb_semaphore)) { | |
403 | if (elp_debug >= 3) { | |
404 | printk(KERN_DEBUG "%s: send_pcb entered while threaded\n", dev->name); | |
405 | } | |
406 | return FALSE; | |
407 | } | |
408 | /* | |
409 | * load each byte into the command register and | |
410 | * wait for the HCRE bit to indicate the adapter | |
411 | * had read the byte | |
412 | */ | |
413 | set_hsf(dev, 0); | |
414 | ||
415 | if (send_pcb_slow(dev->base_addr, pcb->command)) | |
416 | goto abort; | |
417 | ||
418 | spin_lock_irqsave(&adapter->lock, flags); | |
419 | ||
420 | if (send_pcb_fast(dev->base_addr, pcb->length)) | |
421 | goto sti_abort; | |
422 | ||
423 | for (i = 0; i < pcb->length; i++) { | |
424 | if (send_pcb_fast(dev->base_addr, pcb->data.raw[i])) | |
425 | goto sti_abort; | |
426 | } | |
427 | ||
428 | outb_control(adapter->hcr_val | 3, dev); /* signal end of PCB */ | |
429 | outb_command(2 + pcb->length, dev->base_addr); | |
430 | ||
431 | /* now wait for the acknowledgement */ | |
432 | spin_unlock_irqrestore(&adapter->lock, flags); | |
433 | ||
434 | for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) { | |
435 | switch (GET_ASF(dev->base_addr)) { | |
436 | case ASF_PCB_ACK: | |
437 | adapter->send_pcb_semaphore = 0; | |
438 | return TRUE; | |
439 | ||
440 | case ASF_PCB_NAK: | |
441 | #ifdef ELP_DEBUG | |
442 | printk(KERN_DEBUG "%s: send_pcb got NAK\n", dev->name); | |
443 | #endif | |
444 | goto abort; | |
445 | } | |
446 | } | |
447 | ||
448 | if (elp_debug >= 1) | |
449 | printk(KERN_DEBUG "%s: timeout waiting for PCB acknowledge (status %02x)\n", dev->name, inb_status(dev->base_addr)); | |
450 | goto abort; | |
451 | ||
452 | sti_abort: | |
453 | spin_unlock_irqrestore(&adapter->lock, flags); | |
454 | abort: | |
455 | adapter->send_pcb_semaphore = 0; | |
456 | return FALSE; | |
457 | } | |
458 | ||
459 | ||
460 | /***************************************************************** | |
461 | * | |
462 | * receive_pcb | |
463 | * Read a PCB from the adapter | |
464 | * | |
465 | * wait for ACRF to be non-zero ---<---+ | |
466 | * input a byte | | |
467 | * if ASF1 and ASF2 were not both one | | |
468 | * before byte was read, loop --->---+ | |
469 | * set HSF1 and HSF2 for ack | |
470 | * | |
471 | *****************************************************************/ | |
472 | ||
473 | static int receive_pcb(struct net_device *dev, pcb_struct * pcb) | |
474 | { | |
475 | int i, j; | |
476 | int total_length; | |
477 | int stat; | |
478 | unsigned long timeout; | |
479 | unsigned long flags; | |
480 | ||
481 | elp_device *adapter = dev->priv; | |
482 | ||
483 | set_hsf(dev, 0); | |
484 | ||
485 | /* get the command code */ | |
486 | timeout = jiffies + 2*HZ/100; | |
487 | while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && time_before(jiffies, timeout)); | |
488 | if (time_after_eq(jiffies, timeout)) { | |
489 | TIMEOUT_MSG(__LINE__); | |
490 | return FALSE; | |
491 | } | |
492 | pcb->command = inb_command(dev->base_addr); | |
493 | ||
494 | /* read the data length */ | |
495 | timeout = jiffies + 3*HZ/100; | |
496 | while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && time_before(jiffies, timeout)); | |
497 | if (time_after_eq(jiffies, timeout)) { | |
498 | TIMEOUT_MSG(__LINE__); | |
499 | printk(KERN_INFO "%s: status %02x\n", dev->name, stat); | |
500 | return FALSE; | |
501 | } | |
502 | pcb->length = inb_command(dev->base_addr); | |
503 | ||
504 | if (pcb->length > MAX_PCB_DATA) { | |
505 | INVALID_PCB_MSG(pcb->length); | |
506 | adapter_reset(dev); | |
507 | return FALSE; | |
508 | } | |
509 | /* read the data */ | |
510 | spin_lock_irqsave(&adapter->lock, flags); | |
511 | i = 0; | |
512 | do { | |
513 | j = 0; | |
514 | while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && j++ < 20000); | |
515 | pcb->data.raw[i++] = inb_command(dev->base_addr); | |
516 | if (i > MAX_PCB_DATA) | |
517 | INVALID_PCB_MSG(i); | |
518 | } while ((stat & ASF_PCB_MASK) != ASF_PCB_END && j < 20000); | |
519 | spin_unlock_irqrestore(&adapter->lock, flags); | |
520 | if (j >= 20000) { | |
521 | TIMEOUT_MSG(__LINE__); | |
522 | return FALSE; | |
523 | } | |
524 | /* woops, the last "data" byte was really the length! */ | |
525 | total_length = pcb->data.raw[--i]; | |
526 | ||
527 | /* safety check total length vs data length */ | |
528 | if (total_length != (pcb->length + 2)) { | |
529 | if (elp_debug >= 2) | |
530 | printk(KERN_WARNING "%s: mangled PCB received\n", dev->name); | |
531 | set_hsf(dev, HSF_PCB_NAK); | |
532 | return FALSE; | |
533 | } | |
534 | ||
535 | if (pcb->command == CMD_RECEIVE_PACKET_COMPLETE) { | |
536 | if (test_and_set_bit(0, (void *) &adapter->busy)) { | |
537 | if (backlog_next(adapter->rx_backlog.in) == adapter->rx_backlog.out) { | |
538 | set_hsf(dev, HSF_PCB_NAK); | |
539 | printk(KERN_WARNING "%s: PCB rejected, transfer in progress and backlog full\n", dev->name); | |
540 | pcb->command = 0; | |
541 | return TRUE; | |
542 | } else { | |
543 | pcb->command = 0xff; | |
544 | } | |
545 | } | |
546 | } | |
547 | set_hsf(dev, HSF_PCB_ACK); | |
548 | return TRUE; | |
549 | } | |
550 | ||
551 | /****************************************************** | |
552 | * | |
553 | * queue a receive command on the adapter so we will get an | |
554 | * interrupt when a packet is received. | |
555 | * | |
556 | ******************************************************/ | |
557 | ||
558 | static int start_receive(struct net_device *dev, pcb_struct * tx_pcb) | |
559 | { | |
560 | int status; | |
561 | elp_device *adapter = dev->priv; | |
562 | ||
563 | if (elp_debug >= 3) | |
564 | printk(KERN_DEBUG "%s: restarting receiver\n", dev->name); | |
565 | tx_pcb->command = CMD_RECEIVE_PACKET; | |
566 | tx_pcb->length = sizeof(struct Rcv_pkt); | |
567 | tx_pcb->data.rcv_pkt.buf_seg | |
568 | = tx_pcb->data.rcv_pkt.buf_ofs = 0; /* Unused */ | |
569 | tx_pcb->data.rcv_pkt.buf_len = 1600; | |
570 | tx_pcb->data.rcv_pkt.timeout = 0; /* set timeout to zero */ | |
571 | status = send_pcb(dev, tx_pcb); | |
572 | if (status) | |
573 | adapter->rx_active++; | |
574 | return status; | |
575 | } | |
576 | ||
577 | /****************************************************** | |
578 | * | |
579 | * extract a packet from the adapter | |
580 | * this routine is only called from within the interrupt | |
581 | * service routine, so no cli/sti calls are needed | |
582 | * note that the length is always assumed to be even | |
583 | * | |
584 | ******************************************************/ | |
585 | ||
586 | static void receive_packet(struct net_device *dev, int len) | |
587 | { | |
588 | int rlen; | |
589 | elp_device *adapter = dev->priv; | |
590 | void *target; | |
591 | struct sk_buff *skb; | |
592 | unsigned long flags; | |
593 | ||
594 | rlen = (len + 1) & ~1; | |
595 | skb = dev_alloc_skb(rlen + 2); | |
596 | ||
597 | if (!skb) { | |
598 | printk(KERN_WARNING "%s: memory squeeze, dropping packet\n", dev->name); | |
599 | target = adapter->dma_buffer; | |
600 | adapter->current_dma.target = NULL; | |
601 | /* FIXME: stats */ | |
602 | return; | |
603 | } | |
604 | ||
605 | skb_reserve(skb, 2); | |
606 | target = skb_put(skb, rlen); | |
607 | if ((unsigned long)(target + rlen) >= MAX_DMA_ADDRESS) { | |
608 | adapter->current_dma.target = target; | |
609 | target = adapter->dma_buffer; | |
610 | } else { | |
611 | adapter->current_dma.target = NULL; | |
612 | } | |
613 | ||
614 | /* if this happens, we die */ | |
615 | if (test_and_set_bit(0, (void *) &adapter->dmaing)) | |
616 | printk(KERN_ERR "%s: rx blocked, DMA in progress, dir %d\n", dev->name, adapter->current_dma.direction); | |
617 | ||
618 | skb->dev = dev; | |
619 | adapter->current_dma.direction = 0; | |
620 | adapter->current_dma.length = rlen; | |
621 | adapter->current_dma.skb = skb; | |
622 | adapter->current_dma.start_time = jiffies; | |
623 | ||
624 | outb_control(adapter->hcr_val | DIR | TCEN | DMAE, dev); | |
625 | ||
626 | flags=claim_dma_lock(); | |
627 | disable_dma(dev->dma); | |
628 | clear_dma_ff(dev->dma); | |
629 | set_dma_mode(dev->dma, 0x04); /* dma read */ | |
630 | set_dma_addr(dev->dma, isa_virt_to_bus(target)); | |
631 | set_dma_count(dev->dma, rlen); | |
632 | enable_dma(dev->dma); | |
633 | release_dma_lock(flags); | |
634 | ||
635 | if (elp_debug >= 3) { | |
636 | printk(KERN_DEBUG "%s: rx DMA transfer started\n", dev->name); | |
637 | } | |
638 | ||
639 | if (adapter->rx_active) | |
640 | adapter->rx_active--; | |
641 | ||
642 | if (!adapter->busy) | |
643 | printk(KERN_WARNING "%s: receive_packet called, busy not set.\n", dev->name); | |
644 | } | |
645 | ||
646 | /****************************************************** | |
647 | * | |
648 | * interrupt handler | |
649 | * | |
650 | ******************************************************/ | |
651 | ||
652 | static irqreturn_t elp_interrupt(int irq, void *dev_id, struct pt_regs *reg_ptr) | |
653 | { | |
654 | int len; | |
655 | int dlen; | |
656 | int icount = 0; | |
657 | struct net_device *dev; | |
658 | elp_device *adapter; | |
659 | unsigned long timeout; | |
660 | ||
661 | dev = dev_id; | |
662 | adapter = (elp_device *) dev->priv; | |
663 | ||
664 | spin_lock(&adapter->lock); | |
665 | ||
666 | do { | |
667 | /* | |
668 | * has a DMA transfer finished? | |
669 | */ | |
670 | if (inb_status(dev->base_addr) & DONE) { | |
671 | if (!adapter->dmaing) { | |
672 | printk(KERN_WARNING "%s: phantom DMA completed\n", dev->name); | |
673 | } | |
674 | if (elp_debug >= 3) { | |
675 | printk(KERN_DEBUG "%s: %s DMA complete, status %02x\n", dev->name, adapter->current_dma.direction ? "tx" : "rx", inb_status(dev->base_addr)); | |
676 | } | |
677 | ||
678 | outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev); | |
679 | if (adapter->current_dma.direction) { | |
680 | dev_kfree_skb_irq(adapter->current_dma.skb); | |
681 | } else { | |
682 | struct sk_buff *skb = adapter->current_dma.skb; | |
683 | if (skb) { | |
684 | if (adapter->current_dma.target) { | |
685 | /* have already done the skb_put() */ | |
686 | memcpy(adapter->current_dma.target, adapter->dma_buffer, adapter->current_dma.length); | |
687 | } | |
688 | skb->protocol = eth_type_trans(skb,dev); | |
689 | adapter->stats.rx_bytes += skb->len; | |
690 | netif_rx(skb); | |
691 | dev->last_rx = jiffies; | |
692 | } | |
693 | } | |
694 | adapter->dmaing = 0; | |
695 | if (adapter->rx_backlog.in != adapter->rx_backlog.out) { | |
696 | int t = adapter->rx_backlog.length[adapter->rx_backlog.out]; | |
697 | adapter->rx_backlog.out = backlog_next(adapter->rx_backlog.out); | |
698 | if (elp_debug >= 2) | |
699 | printk(KERN_DEBUG "%s: receiving backlogged packet (%d)\n", dev->name, t); | |
700 | receive_packet(dev, t); | |
701 | } else { | |
702 | adapter->busy = 0; | |
703 | } | |
704 | } else { | |
705 | /* has one timed out? */ | |
706 | check_3c505_dma(dev); | |
707 | } | |
708 | ||
709 | /* | |
710 | * receive a PCB from the adapter | |
711 | */ | |
712 | timeout = jiffies + 3*HZ/100; | |
713 | while ((inb_status(dev->base_addr) & ACRF) != 0 && time_before(jiffies, timeout)) { | |
714 | if (receive_pcb(dev, &adapter->irx_pcb)) { | |
715 | switch (adapter->irx_pcb.command) | |
716 | { | |
717 | case 0: | |
718 | break; | |
719 | /* | |
720 | * received a packet - this must be handled fast | |
721 | */ | |
722 | case 0xff: | |
723 | case CMD_RECEIVE_PACKET_COMPLETE: | |
724 | /* if the device isn't open, don't pass packets up the stack */ | |
725 | if (!netif_running(dev)) | |
726 | break; | |
727 | len = adapter->irx_pcb.data.rcv_resp.pkt_len; | |
728 | dlen = adapter->irx_pcb.data.rcv_resp.buf_len; | |
729 | if (adapter->irx_pcb.data.rcv_resp.timeout != 0) { | |
730 | printk(KERN_ERR "%s: interrupt - packet not received correctly\n", dev->name); | |
731 | } else { | |
732 | if (elp_debug >= 3) { | |
733 | printk(KERN_DEBUG "%s: interrupt - packet received of length %i (%i)\n", dev->name, len, dlen); | |
734 | } | |
735 | if (adapter->irx_pcb.command == 0xff) { | |
736 | if (elp_debug >= 2) | |
737 | printk(KERN_DEBUG "%s: adding packet to backlog (len = %d)\n", dev->name, dlen); | |
738 | adapter->rx_backlog.length[adapter->rx_backlog.in] = dlen; | |
739 | adapter->rx_backlog.in = backlog_next(adapter->rx_backlog.in); | |
740 | } else { | |
741 | receive_packet(dev, dlen); | |
742 | } | |
743 | if (elp_debug >= 3) | |
744 | printk(KERN_DEBUG "%s: packet received\n", dev->name); | |
745 | } | |
746 | break; | |
747 | ||
748 | /* | |
749 | * 82586 configured correctly | |
750 | */ | |
751 | case CMD_CONFIGURE_82586_RESPONSE: | |
752 | adapter->got[CMD_CONFIGURE_82586] = 1; | |
753 | if (elp_debug >= 3) | |
754 | printk(KERN_DEBUG "%s: interrupt - configure response received\n", dev->name); | |
755 | break; | |
756 | ||
757 | /* | |
758 | * Adapter memory configuration | |
759 | */ | |
760 | case CMD_CONFIGURE_ADAPTER_RESPONSE: | |
761 | adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 1; | |
762 | if (elp_debug >= 3) | |
763 | printk(KERN_DEBUG "%s: Adapter memory configuration %s.\n", dev->name, | |
764 | adapter->irx_pcb.data.failed ? "failed" : "succeeded"); | |
765 | break; | |
766 | ||
767 | /* | |
768 | * Multicast list loading | |
769 | */ | |
770 | case CMD_LOAD_MULTICAST_RESPONSE: | |
771 | adapter->got[CMD_LOAD_MULTICAST_LIST] = 1; | |
772 | if (elp_debug >= 3) | |
773 | printk(KERN_DEBUG "%s: Multicast address list loading %s.\n", dev->name, | |
774 | adapter->irx_pcb.data.failed ? "failed" : "succeeded"); | |
775 | break; | |
776 | ||
777 | /* | |
778 | * Station address setting | |
779 | */ | |
780 | case CMD_SET_ADDRESS_RESPONSE: | |
781 | adapter->got[CMD_SET_STATION_ADDRESS] = 1; | |
782 | if (elp_debug >= 3) | |
783 | printk(KERN_DEBUG "%s: Ethernet address setting %s.\n", dev->name, | |
784 | adapter->irx_pcb.data.failed ? "failed" : "succeeded"); | |
785 | break; | |
786 | ||
787 | ||
788 | /* | |
789 | * received board statistics | |
790 | */ | |
791 | case CMD_NETWORK_STATISTICS_RESPONSE: | |
792 | adapter->stats.rx_packets += adapter->irx_pcb.data.netstat.tot_recv; | |
793 | adapter->stats.tx_packets += adapter->irx_pcb.data.netstat.tot_xmit; | |
794 | adapter->stats.rx_crc_errors += adapter->irx_pcb.data.netstat.err_CRC; | |
795 | adapter->stats.rx_frame_errors += adapter->irx_pcb.data.netstat.err_align; | |
796 | adapter->stats.rx_fifo_errors += adapter->irx_pcb.data.netstat.err_ovrrun; | |
797 | adapter->stats.rx_over_errors += adapter->irx_pcb.data.netstat.err_res; | |
798 | adapter->got[CMD_NETWORK_STATISTICS] = 1; | |
799 | if (elp_debug >= 3) | |
800 | printk(KERN_DEBUG "%s: interrupt - statistics response received\n", dev->name); | |
801 | break; | |
802 | ||
803 | /* | |
804 | * sent a packet | |
805 | */ | |
806 | case CMD_TRANSMIT_PACKET_COMPLETE: | |
807 | if (elp_debug >= 3) | |
808 | printk(KERN_DEBUG "%s: interrupt - packet sent\n", dev->name); | |
809 | if (!netif_running(dev)) | |
810 | break; | |
811 | switch (adapter->irx_pcb.data.xmit_resp.c_stat) { | |
812 | case 0xffff: | |
813 | adapter->stats.tx_aborted_errors++; | |
814 | printk(KERN_INFO "%s: transmit timed out, network cable problem?\n", dev->name); | |
815 | break; | |
816 | case 0xfffe: | |
817 | adapter->stats.tx_fifo_errors++; | |
818 | printk(KERN_INFO "%s: transmit timed out, FIFO underrun\n", dev->name); | |
819 | break; | |
820 | } | |
821 | netif_wake_queue(dev); | |
822 | break; | |
823 | ||
824 | /* | |
825 | * some unknown PCB | |
826 | */ | |
827 | default: | |
828 | printk(KERN_DEBUG "%s: unknown PCB received - %2.2x\n", dev->name, adapter->irx_pcb.command); | |
829 | break; | |
830 | } | |
831 | } else { | |
832 | printk(KERN_WARNING "%s: failed to read PCB on interrupt\n", dev->name); | |
833 | adapter_reset(dev); | |
834 | } | |
835 | } | |
836 | ||
837 | } while (icount++ < 5 && (inb_status(dev->base_addr) & (ACRF | DONE))); | |
838 | ||
839 | prime_rx(dev); | |
840 | ||
841 | /* | |
842 | * indicate no longer in interrupt routine | |
843 | */ | |
844 | spin_unlock(&adapter->lock); | |
845 | return IRQ_HANDLED; | |
846 | } | |
847 | ||
848 | ||
849 | /****************************************************** | |
850 | * | |
851 | * open the board | |
852 | * | |
853 | ******************************************************/ | |
854 | ||
855 | static int elp_open(struct net_device *dev) | |
856 | { | |
857 | elp_device *adapter; | |
858 | int retval; | |
859 | ||
860 | adapter = dev->priv; | |
861 | ||
862 | if (elp_debug >= 3) | |
863 | printk(KERN_DEBUG "%s: request to open device\n", dev->name); | |
864 | ||
865 | /* | |
866 | * make sure we actually found the device | |
867 | */ | |
868 | if (adapter == NULL) { | |
869 | printk(KERN_ERR "%s: Opening a non-existent physical device\n", dev->name); | |
870 | return -EAGAIN; | |
871 | } | |
872 | /* | |
873 | * disable interrupts on the board | |
874 | */ | |
875 | outb_control(0, dev); | |
876 | ||
877 | /* | |
878 | * clear any pending interrupts | |
879 | */ | |
880 | inb_command(dev->base_addr); | |
881 | adapter_reset(dev); | |
882 | ||
883 | /* | |
884 | * no receive PCBs active | |
885 | */ | |
886 | adapter->rx_active = 0; | |
887 | ||
888 | adapter->busy = 0; | |
889 | adapter->send_pcb_semaphore = 0; | |
890 | adapter->rx_backlog.in = 0; | |
891 | adapter->rx_backlog.out = 0; | |
892 | ||
893 | spin_lock_init(&adapter->lock); | |
894 | ||
895 | /* | |
896 | * install our interrupt service routine | |
897 | */ | |
898 | if ((retval = request_irq(dev->irq, &elp_interrupt, 0, dev->name, dev))) { | |
899 | printk(KERN_ERR "%s: could not allocate IRQ%d\n", dev->name, dev->irq); | |
900 | return retval; | |
901 | } | |
902 | if ((retval = request_dma(dev->dma, dev->name))) { | |
903 | free_irq(dev->irq, dev); | |
904 | printk(KERN_ERR "%s: could not allocate DMA%d channel\n", dev->name, dev->dma); | |
905 | return retval; | |
906 | } | |
907 | adapter->dma_buffer = (void *) dma_mem_alloc(DMA_BUFFER_SIZE); | |
908 | if (!adapter->dma_buffer) { | |
909 | printk(KERN_ERR "%s: could not allocate DMA buffer\n", dev->name); | |
910 | free_dma(dev->dma); | |
911 | free_irq(dev->irq, dev); | |
912 | return -ENOMEM; | |
913 | } | |
914 | adapter->dmaing = 0; | |
915 | ||
916 | /* | |
917 | * enable interrupts on the board | |
918 | */ | |
919 | outb_control(CMDE, dev); | |
920 | ||
921 | /* | |
922 | * configure adapter memory: we need 10 multicast addresses, default==0 | |
923 | */ | |
924 | if (elp_debug >= 3) | |
925 | printk(KERN_DEBUG "%s: sending 3c505 memory configuration command\n", dev->name); | |
926 | adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY; | |
927 | adapter->tx_pcb.data.memconf.cmd_q = 10; | |
928 | adapter->tx_pcb.data.memconf.rcv_q = 20; | |
929 | adapter->tx_pcb.data.memconf.mcast = 10; | |
930 | adapter->tx_pcb.data.memconf.frame = 20; | |
931 | adapter->tx_pcb.data.memconf.rcv_b = 20; | |
932 | adapter->tx_pcb.data.memconf.progs = 0; | |
933 | adapter->tx_pcb.length = sizeof(struct Memconf); | |
934 | adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 0; | |
935 | if (!send_pcb(dev, &adapter->tx_pcb)) | |
936 | printk(KERN_ERR "%s: couldn't send memory configuration command\n", dev->name); | |
937 | else { | |
938 | unsigned long timeout = jiffies + TIMEOUT; | |
939 | while (adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] == 0 && time_before(jiffies, timeout)); | |
940 | if (time_after_eq(jiffies, timeout)) | |
941 | TIMEOUT_MSG(__LINE__); | |
942 | } | |
943 | ||
944 | ||
945 | /* | |
946 | * configure adapter to receive broadcast messages and wait for response | |
947 | */ | |
948 | if (elp_debug >= 3) | |
949 | printk(KERN_DEBUG "%s: sending 82586 configure command\n", dev->name); | |
950 | adapter->tx_pcb.command = CMD_CONFIGURE_82586; | |
951 | adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD; | |
952 | adapter->tx_pcb.length = 2; | |
953 | adapter->got[CMD_CONFIGURE_82586] = 0; | |
954 | if (!send_pcb(dev, &adapter->tx_pcb)) | |
955 | printk(KERN_ERR "%s: couldn't send 82586 configure command\n", dev->name); | |
956 | else { | |
957 | unsigned long timeout = jiffies + TIMEOUT; | |
958 | while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout)); | |
959 | if (time_after_eq(jiffies, timeout)) | |
960 | TIMEOUT_MSG(__LINE__); | |
961 | } | |
962 | ||
963 | /* enable burst-mode DMA */ | |
964 | /* outb(0x1, dev->base_addr + PORT_AUXDMA); */ | |
965 | ||
966 | /* | |
967 | * queue receive commands to provide buffering | |
968 | */ | |
969 | prime_rx(dev); | |
970 | if (elp_debug >= 3) | |
971 | printk(KERN_DEBUG "%s: %d receive PCBs active\n", dev->name, adapter->rx_active); | |
972 | ||
973 | /* | |
974 | * device is now officially open! | |
975 | */ | |
976 | ||
977 | netif_start_queue(dev); | |
978 | return 0; | |
979 | } | |
980 | ||
981 | ||
982 | /****************************************************** | |
983 | * | |
984 | * send a packet to the adapter | |
985 | * | |
986 | ******************************************************/ | |
987 | ||
988 | static int send_packet(struct net_device *dev, struct sk_buff *skb) | |
989 | { | |
990 | elp_device *adapter = dev->priv; | |
991 | unsigned long target; | |
992 | unsigned long flags; | |
993 | ||
994 | /* | |
995 | * make sure the length is even and no shorter than 60 bytes | |
996 | */ | |
997 | unsigned int nlen = (((skb->len < 60) ? 60 : skb->len) + 1) & (~1); | |
998 | ||
999 | if (test_and_set_bit(0, (void *) &adapter->busy)) { | |
1000 | if (elp_debug >= 2) | |
1001 | printk(KERN_DEBUG "%s: transmit blocked\n", dev->name); | |
1002 | return FALSE; | |
1003 | } | |
1004 | ||
1005 | adapter->stats.tx_bytes += nlen; | |
1006 | ||
1007 | /* | |
1008 | * send the adapter a transmit packet command. Ignore segment and offset | |
1009 | * and make sure the length is even | |
1010 | */ | |
1011 | adapter->tx_pcb.command = CMD_TRANSMIT_PACKET; | |
1012 | adapter->tx_pcb.length = sizeof(struct Xmit_pkt); | |
1013 | adapter->tx_pcb.data.xmit_pkt.buf_ofs | |
1014 | = adapter->tx_pcb.data.xmit_pkt.buf_seg = 0; /* Unused */ | |
1015 | adapter->tx_pcb.data.xmit_pkt.pkt_len = nlen; | |
1016 | ||
1017 | if (!send_pcb(dev, &adapter->tx_pcb)) { | |
1018 | adapter->busy = 0; | |
1019 | return FALSE; | |
1020 | } | |
1021 | /* if this happens, we die */ | |
1022 | if (test_and_set_bit(0, (void *) &adapter->dmaing)) | |
1023 | printk(KERN_DEBUG "%s: tx: DMA %d in progress\n", dev->name, adapter->current_dma.direction); | |
1024 | ||
1025 | adapter->current_dma.direction = 1; | |
1026 | adapter->current_dma.start_time = jiffies; | |
1027 | ||
1028 | if ((unsigned long)(skb->data + nlen) >= MAX_DMA_ADDRESS || nlen != skb->len) { | |
1029 | memcpy(adapter->dma_buffer, skb->data, nlen); | |
1030 | memset(adapter->dma_buffer+skb->len, 0, nlen-skb->len); | |
1031 | target = isa_virt_to_bus(adapter->dma_buffer); | |
1032 | } | |
1033 | else { | |
1034 | target = isa_virt_to_bus(skb->data); | |
1035 | } | |
1036 | adapter->current_dma.skb = skb; | |
1037 | ||
1038 | flags=claim_dma_lock(); | |
1039 | disable_dma(dev->dma); | |
1040 | clear_dma_ff(dev->dma); | |
1041 | set_dma_mode(dev->dma, 0x48); /* dma memory -> io */ | |
1042 | set_dma_addr(dev->dma, target); | |
1043 | set_dma_count(dev->dma, nlen); | |
1044 | outb_control(adapter->hcr_val | DMAE | TCEN, dev); | |
1045 | enable_dma(dev->dma); | |
1046 | release_dma_lock(flags); | |
1047 | ||
1048 | if (elp_debug >= 3) | |
1049 | printk(KERN_DEBUG "%s: DMA transfer started\n", dev->name); | |
1050 | ||
1051 | return TRUE; | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | * The upper layer thinks we timed out | |
1056 | */ | |
1057 | ||
1058 | static void elp_timeout(struct net_device *dev) | |
1059 | { | |
1060 | elp_device *adapter = dev->priv; | |
1061 | int stat; | |
1062 | ||
1063 | stat = inb_status(dev->base_addr); | |
1064 | printk(KERN_WARNING "%s: transmit timed out, lost %s?\n", dev->name, (stat & ACRF) ? "interrupt" : "command"); | |
1065 | if (elp_debug >= 1) | |
1066 | printk(KERN_DEBUG "%s: status %#02x\n", dev->name, stat); | |
1067 | dev->trans_start = jiffies; | |
1068 | adapter->stats.tx_dropped++; | |
1069 | netif_wake_queue(dev); | |
1070 | } | |
1071 | ||
1072 | /****************************************************** | |
1073 | * | |
1074 | * start the transmitter | |
1075 | * return 0 if sent OK, else return 1 | |
1076 | * | |
1077 | ******************************************************/ | |
1078 | ||
1079 | static int elp_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1080 | { | |
1081 | unsigned long flags; | |
1082 | elp_device *adapter = dev->priv; | |
1083 | ||
1084 | spin_lock_irqsave(&adapter->lock, flags); | |
1085 | check_3c505_dma(dev); | |
1086 | ||
1087 | if (elp_debug >= 3) | |
1088 | printk(KERN_DEBUG "%s: request to send packet of length %d\n", dev->name, (int) skb->len); | |
1089 | ||
1090 | netif_stop_queue(dev); | |
1091 | ||
1092 | /* | |
1093 | * send the packet at skb->data for skb->len | |
1094 | */ | |
1095 | if (!send_packet(dev, skb)) { | |
1096 | if (elp_debug >= 2) { | |
1097 | printk(KERN_DEBUG "%s: failed to transmit packet\n", dev->name); | |
1098 | } | |
1099 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1100 | return 1; | |
1101 | } | |
1102 | if (elp_debug >= 3) | |
1103 | printk(KERN_DEBUG "%s: packet of length %d sent\n", dev->name, (int) skb->len); | |
1104 | ||
1105 | /* | |
1106 | * start the transmit timeout | |
1107 | */ | |
1108 | dev->trans_start = jiffies; | |
1109 | ||
1110 | prime_rx(dev); | |
1111 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1112 | netif_start_queue(dev); | |
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | /****************************************************** | |
1117 | * | |
1118 | * return statistics on the board | |
1119 | * | |
1120 | ******************************************************/ | |
1121 | ||
1122 | static struct net_device_stats *elp_get_stats(struct net_device *dev) | |
1123 | { | |
1124 | elp_device *adapter = (elp_device *) dev->priv; | |
1125 | ||
1126 | if (elp_debug >= 3) | |
1127 | printk(KERN_DEBUG "%s: request for stats\n", dev->name); | |
1128 | ||
1129 | /* If the device is closed, just return the latest stats we have, | |
1130 | - we cannot ask from the adapter without interrupts */ | |
1131 | if (!netif_running(dev)) | |
1132 | return &adapter->stats; | |
1133 | ||
1134 | /* send a get statistics command to the board */ | |
1135 | adapter->tx_pcb.command = CMD_NETWORK_STATISTICS; | |
1136 | adapter->tx_pcb.length = 0; | |
1137 | adapter->got[CMD_NETWORK_STATISTICS] = 0; | |
1138 | if (!send_pcb(dev, &adapter->tx_pcb)) | |
1139 | printk(KERN_ERR "%s: couldn't send get statistics command\n", dev->name); | |
1140 | else { | |
1141 | unsigned long timeout = jiffies + TIMEOUT; | |
1142 | while (adapter->got[CMD_NETWORK_STATISTICS] == 0 && time_before(jiffies, timeout)); | |
1143 | if (time_after_eq(jiffies, timeout)) { | |
1144 | TIMEOUT_MSG(__LINE__); | |
1145 | return &adapter->stats; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | /* statistics are now up to date */ | |
1150 | return &adapter->stats; | |
1151 | } | |
1152 | ||
1153 | ||
1154 | static void netdev_get_drvinfo(struct net_device *dev, | |
1155 | struct ethtool_drvinfo *info) | |
1156 | { | |
1157 | strcpy(info->driver, DRV_NAME); | |
1158 | strcpy(info->version, DRV_VERSION); | |
1159 | sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr); | |
1160 | } | |
1161 | ||
1162 | static u32 netdev_get_msglevel(struct net_device *dev) | |
1163 | { | |
1164 | return debug; | |
1165 | } | |
1166 | ||
1167 | static void netdev_set_msglevel(struct net_device *dev, u32 level) | |
1168 | { | |
1169 | debug = level; | |
1170 | } | |
1171 | ||
1172 | static struct ethtool_ops netdev_ethtool_ops = { | |
1173 | .get_drvinfo = netdev_get_drvinfo, | |
1174 | .get_msglevel = netdev_get_msglevel, | |
1175 | .set_msglevel = netdev_set_msglevel, | |
1176 | }; | |
1177 | ||
1178 | /****************************************************** | |
1179 | * | |
1180 | * close the board | |
1181 | * | |
1182 | ******************************************************/ | |
1183 | ||
1184 | static int elp_close(struct net_device *dev) | |
1185 | { | |
1186 | elp_device *adapter; | |
1187 | ||
1188 | adapter = dev->priv; | |
1189 | ||
1190 | if (elp_debug >= 3) | |
1191 | printk(KERN_DEBUG "%s: request to close device\n", dev->name); | |
1192 | ||
1193 | netif_stop_queue(dev); | |
1194 | ||
1195 | /* Someone may request the device statistic information even when | |
1196 | * the interface is closed. The following will update the statistics | |
1197 | * structure in the driver, so we'll be able to give current statistics. | |
1198 | */ | |
1199 | (void) elp_get_stats(dev); | |
1200 | ||
1201 | /* | |
1202 | * disable interrupts on the board | |
1203 | */ | |
1204 | outb_control(0, dev); | |
1205 | ||
1206 | /* | |
1207 | * release the IRQ | |
1208 | */ | |
1209 | free_irq(dev->irq, dev); | |
1210 | ||
1211 | free_dma(dev->dma); | |
1212 | free_pages((unsigned long) adapter->dma_buffer, get_order(DMA_BUFFER_SIZE)); | |
1213 | ||
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | ||
1218 | /************************************************************ | |
1219 | * | |
1220 | * Set multicast list | |
1221 | * num_addrs==0: clear mc_list | |
1222 | * num_addrs==-1: set promiscuous mode | |
1223 | * num_addrs>0: set mc_list | |
1224 | * | |
1225 | ************************************************************/ | |
1226 | ||
1227 | static void elp_set_mc_list(struct net_device *dev) | |
1228 | { | |
1229 | elp_device *adapter = (elp_device *) dev->priv; | |
1230 | struct dev_mc_list *dmi = dev->mc_list; | |
1231 | int i; | |
1232 | unsigned long flags; | |
1233 | ||
1234 | if (elp_debug >= 3) | |
1235 | printk(KERN_DEBUG "%s: request to set multicast list\n", dev->name); | |
1236 | ||
1237 | spin_lock_irqsave(&adapter->lock, flags); | |
1238 | ||
1239 | if (!(dev->flags & (IFF_PROMISC | IFF_ALLMULTI))) { | |
1240 | /* send a "load multicast list" command to the board, max 10 addrs/cmd */ | |
1241 | /* if num_addrs==0 the list will be cleared */ | |
1242 | adapter->tx_pcb.command = CMD_LOAD_MULTICAST_LIST; | |
1243 | adapter->tx_pcb.length = 6 * dev->mc_count; | |
1244 | for (i = 0; i < dev->mc_count; i++) { | |
1245 | memcpy(adapter->tx_pcb.data.multicast[i], dmi->dmi_addr, 6); | |
1246 | dmi = dmi->next; | |
1247 | } | |
1248 | adapter->got[CMD_LOAD_MULTICAST_LIST] = 0; | |
1249 | if (!send_pcb(dev, &adapter->tx_pcb)) | |
1250 | printk(KERN_ERR "%s: couldn't send set_multicast command\n", dev->name); | |
1251 | else { | |
1252 | unsigned long timeout = jiffies + TIMEOUT; | |
1253 | while (adapter->got[CMD_LOAD_MULTICAST_LIST] == 0 && time_before(jiffies, timeout)); | |
1254 | if (time_after_eq(jiffies, timeout)) { | |
1255 | TIMEOUT_MSG(__LINE__); | |
1256 | } | |
1257 | } | |
1258 | if (dev->mc_count) | |
1259 | adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD | RECV_MULTI; | |
1260 | else /* num_addrs == 0 */ | |
1261 | adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD; | |
1262 | } else | |
1263 | adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_PROMISC; | |
1264 | /* | |
1265 | * configure adapter to receive messages (as specified above) | |
1266 | * and wait for response | |
1267 | */ | |
1268 | if (elp_debug >= 3) | |
1269 | printk(KERN_DEBUG "%s: sending 82586 configure command\n", dev->name); | |
1270 | adapter->tx_pcb.command = CMD_CONFIGURE_82586; | |
1271 | adapter->tx_pcb.length = 2; | |
1272 | adapter->got[CMD_CONFIGURE_82586] = 0; | |
1273 | if (!send_pcb(dev, &adapter->tx_pcb)) | |
1274 | { | |
1275 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1276 | printk(KERN_ERR "%s: couldn't send 82586 configure command\n", dev->name); | |
1277 | } | |
1278 | else { | |
1279 | unsigned long timeout = jiffies + TIMEOUT; | |
1280 | spin_unlock_irqrestore(&adapter->lock, flags); | |
1281 | while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout)); | |
1282 | if (time_after_eq(jiffies, timeout)) | |
1283 | TIMEOUT_MSG(__LINE__); | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | /************************************************************ | |
1288 | * | |
1289 | * A couple of tests to see if there's 3C505 or not | |
1290 | * Called only by elp_autodetect | |
1291 | ************************************************************/ | |
1292 | ||
1293 | static int __init elp_sense(struct net_device *dev) | |
1294 | { | |
1295 | int addr = dev->base_addr; | |
1296 | const char *name = dev->name; | |
1297 | byte orig_HSR; | |
1298 | ||
1299 | if (!request_region(addr, ELP_IO_EXTENT, "3c505")) | |
1300 | return -ENODEV; | |
1301 | ||
1302 | orig_HSR = inb_status(addr); | |
1303 | ||
1304 | if (elp_debug > 0) | |
1305 | printk(search_msg, name, addr); | |
1306 | ||
1307 | if (orig_HSR == 0xff) { | |
1308 | if (elp_debug > 0) | |
1309 | printk(notfound_msg, 1); | |
1310 | goto out; | |
1311 | } | |
1312 | ||
1313 | /* Wait for a while; the adapter may still be booting up */ | |
1314 | if (elp_debug > 0) | |
1315 | printk(stilllooking_msg); | |
1316 | ||
1317 | if (orig_HSR & DIR) { | |
1318 | /* If HCR.DIR is up, we pull it down. HSR.DIR should follow. */ | |
1319 | outb(0, dev->base_addr + PORT_CONTROL); | |
c56943e6 | 1320 | msleep(300); |
1da177e4 LT |
1321 | if (inb_status(addr) & DIR) { |
1322 | if (elp_debug > 0) | |
1323 | printk(notfound_msg, 2); | |
1324 | goto out; | |
1325 | } | |
1326 | } else { | |
1327 | /* If HCR.DIR is down, we pull it up. HSR.DIR should follow. */ | |
1328 | outb(DIR, dev->base_addr + PORT_CONTROL); | |
c56943e6 | 1329 | msleep(300); |
1da177e4 LT |
1330 | if (!(inb_status(addr) & DIR)) { |
1331 | if (elp_debug > 0) | |
1332 | printk(notfound_msg, 3); | |
1333 | goto out; | |
1334 | } | |
1335 | } | |
1336 | /* | |
1337 | * It certainly looks like a 3c505. | |
1338 | */ | |
1339 | if (elp_debug > 0) | |
1340 | printk(found_msg); | |
1341 | ||
1342 | return 0; | |
1343 | out: | |
1344 | release_region(addr, ELP_IO_EXTENT); | |
1345 | return -ENODEV; | |
1346 | } | |
1347 | ||
1348 | /************************************************************* | |
1349 | * | |
1350 | * Search through addr_list[] and try to find a 3C505 | |
1351 | * Called only by eplus_probe | |
1352 | *************************************************************/ | |
1353 | ||
1354 | static int __init elp_autodetect(struct net_device *dev) | |
1355 | { | |
1356 | int idx = 0; | |
1357 | ||
1358 | /* if base address set, then only check that address | |
1359 | otherwise, run through the table */ | |
1360 | if (dev->base_addr != 0) { /* dev->base_addr == 0 ==> plain autodetect */ | |
1361 | if (elp_sense(dev) == 0) | |
1362 | return dev->base_addr; | |
1363 | } else | |
1364 | while ((dev->base_addr = addr_list[idx++])) { | |
1365 | if (elp_sense(dev) == 0) | |
1366 | return dev->base_addr; | |
1367 | } | |
1368 | ||
1369 | /* could not find an adapter */ | |
1370 | if (elp_debug > 0) | |
1371 | printk(couldnot_msg, dev->name); | |
1372 | ||
1373 | return 0; /* Because of this, the layer above will return -ENODEV */ | |
1374 | } | |
1375 | ||
1376 | ||
1377 | /****************************************************** | |
1378 | * | |
1379 | * probe for an Etherlink Plus board at the specified address | |
1380 | * | |
1381 | ******************************************************/ | |
1382 | ||
1383 | /* There are three situations we need to be able to detect here: | |
1384 | ||
1385 | * a) the card is idle | |
1386 | * b) the card is still booting up | |
1387 | * c) the card is stuck in a strange state (some DOS drivers do this) | |
1388 | * | |
1389 | * In case (a), all is well. In case (b), we wait 10 seconds to see if the | |
1390 | * card finishes booting, and carry on if so. In case (c), we do a hard reset, | |
1391 | * loop round, and hope for the best. | |
1392 | * | |
1393 | * This is all very unpleasant, but hopefully avoids the problems with the old | |
1394 | * probe code (which had a 15-second delay if the card was idle, and didn't | |
1395 | * work at all if it was in a weird state). | |
1396 | */ | |
1397 | ||
1398 | static int __init elplus_setup(struct net_device *dev) | |
1399 | { | |
1400 | elp_device *adapter = dev->priv; | |
1401 | int i, tries, tries1, okay; | |
1402 | unsigned long timeout; | |
1403 | unsigned long cookie = 0; | |
1404 | int err = -ENODEV; | |
1405 | ||
1406 | SET_MODULE_OWNER(dev); | |
1407 | ||
1408 | /* | |
1409 | * setup adapter structure | |
1410 | */ | |
1411 | ||
1412 | dev->base_addr = elp_autodetect(dev); | |
1413 | if (!dev->base_addr) | |
1414 | return -ENODEV; | |
1415 | ||
1416 | adapter->send_pcb_semaphore = 0; | |
1417 | ||
1418 | for (tries1 = 0; tries1 < 3; tries1++) { | |
1419 | outb_control((adapter->hcr_val | CMDE) & ~DIR, dev); | |
1420 | /* First try to write just one byte, to see if the card is | |
1421 | * responding at all normally. | |
1422 | */ | |
1423 | timeout = jiffies + 5*HZ/100; | |
1424 | okay = 0; | |
1425 | while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE)); | |
1426 | if ((inb_status(dev->base_addr) & HCRE)) { | |
1427 | outb_command(0, dev->base_addr); /* send a spurious byte */ | |
1428 | timeout = jiffies + 5*HZ/100; | |
1429 | while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE)); | |
1430 | if (inb_status(dev->base_addr) & HCRE) | |
1431 | okay = 1; | |
1432 | } | |
1433 | if (!okay) { | |
1434 | /* Nope, it's ignoring the command register. This means that | |
1435 | * either it's still booting up, or it's died. | |
1436 | */ | |
1437 | printk(KERN_ERR "%s: command register wouldn't drain, ", dev->name); | |
1438 | if ((inb_status(dev->base_addr) & 7) == 3) { | |
1439 | /* If the adapter status is 3, it *could* still be booting. | |
1440 | * Give it the benefit of the doubt for 10 seconds. | |
1441 | */ | |
1442 | printk("assuming 3c505 still starting\n"); | |
1443 | timeout = jiffies + 10*HZ; | |
1444 | while (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7)); | |
1445 | if (inb_status(dev->base_addr) & 7) { | |
1446 | printk(KERN_ERR "%s: 3c505 failed to start\n", dev->name); | |
1447 | } else { | |
1448 | okay = 1; /* It started */ | |
1449 | } | |
1450 | } else { | |
1451 | /* Otherwise, it must just be in a strange | |
1452 | * state. We probably need to kick it. | |
1453 | */ | |
1454 | printk("3c505 is sulking\n"); | |
1455 | } | |
1456 | } | |
1457 | for (tries = 0; tries < 5 && okay; tries++) { | |
1458 | ||
1459 | /* | |
1460 | * Try to set the Ethernet address, to make sure that the board | |
1461 | * is working. | |
1462 | */ | |
1463 | adapter->tx_pcb.command = CMD_STATION_ADDRESS; | |
1464 | adapter->tx_pcb.length = 0; | |
1465 | cookie = probe_irq_on(); | |
1466 | if (!send_pcb(dev, &adapter->tx_pcb)) { | |
1467 | printk(KERN_ERR "%s: could not send first PCB\n", dev->name); | |
1468 | probe_irq_off(cookie); | |
1469 | continue; | |
1470 | } | |
1471 | if (!receive_pcb(dev, &adapter->rx_pcb)) { | |
1472 | printk(KERN_ERR "%s: could not read first PCB\n", dev->name); | |
1473 | probe_irq_off(cookie); | |
1474 | continue; | |
1475 | } | |
1476 | if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) || | |
1477 | (adapter->rx_pcb.length != 6)) { | |
1478 | printk(KERN_ERR "%s: first PCB wrong (%d, %d)\n", dev->name, adapter->rx_pcb.command, adapter->rx_pcb.length); | |
1479 | probe_irq_off(cookie); | |
1480 | continue; | |
1481 | } | |
1482 | goto okay; | |
1483 | } | |
1484 | /* It's broken. Do a hard reset to re-initialise the board, | |
1485 | * and try again. | |
1486 | */ | |
1487 | printk(KERN_INFO "%s: resetting adapter\n", dev->name); | |
1488 | outb_control(adapter->hcr_val | FLSH | ATTN, dev); | |
1489 | outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev); | |
1490 | } | |
1491 | printk(KERN_ERR "%s: failed to initialise 3c505\n", dev->name); | |
1492 | goto out; | |
1493 | ||
1494 | okay: | |
1495 | if (dev->irq) { /* Is there a preset IRQ? */ | |
1496 | int rpt = probe_irq_off(cookie); | |
1497 | if (dev->irq != rpt) { | |
1498 | printk(KERN_WARNING "%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt); | |
1499 | } | |
1500 | /* if dev->irq == probe_irq_off(cookie), all is well */ | |
1501 | } else /* No preset IRQ; just use what we can detect */ | |
1502 | dev->irq = probe_irq_off(cookie); | |
1503 | switch (dev->irq) { /* Legal, sane? */ | |
1504 | case 0: | |
1505 | printk(KERN_ERR "%s: IRQ probe failed: check 3c505 jumpers.\n", | |
1506 | dev->name); | |
1507 | goto out; | |
1508 | case 1: | |
1509 | case 6: | |
1510 | case 8: | |
1511 | case 13: | |
1512 | printk(KERN_ERR "%s: Impossible IRQ %d reported by probe_irq_off().\n", | |
1513 | dev->name, dev->irq); | |
1514 | goto out; | |
1515 | } | |
1516 | /* | |
1517 | * Now we have the IRQ number so we can disable the interrupts from | |
1518 | * the board until the board is opened. | |
1519 | */ | |
1520 | outb_control(adapter->hcr_val & ~CMDE, dev); | |
1521 | ||
1522 | /* | |
1523 | * copy Ethernet address into structure | |
1524 | */ | |
1525 | for (i = 0; i < 6; i++) | |
1526 | dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i]; | |
1527 | ||
1528 | /* find a DMA channel */ | |
1529 | if (!dev->dma) { | |
1530 | if (dev->mem_start) { | |
1531 | dev->dma = dev->mem_start & 7; | |
1532 | } | |
1533 | else { | |
1534 | printk(KERN_WARNING "%s: warning, DMA channel not specified, using default\n", dev->name); | |
1535 | dev->dma = ELP_DMA; | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * print remainder of startup message | |
1541 | */ | |
1542 | printk(KERN_INFO "%s: 3c505 at %#lx, irq %d, dma %d, ", | |
1543 | dev->name, dev->base_addr, dev->irq, dev->dma); | |
1544 | printk("addr %02x:%02x:%02x:%02x:%02x:%02x, ", | |
1545 | dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], | |
1546 | dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); | |
1547 | ||
1548 | /* | |
1549 | * read more information from the adapter | |
1550 | */ | |
1551 | ||
1552 | adapter->tx_pcb.command = CMD_ADAPTER_INFO; | |
1553 | adapter->tx_pcb.length = 0; | |
1554 | if (!send_pcb(dev, &adapter->tx_pcb) || | |
1555 | !receive_pcb(dev, &adapter->rx_pcb) || | |
1556 | (adapter->rx_pcb.command != CMD_ADAPTER_INFO_RESPONSE) || | |
1557 | (adapter->rx_pcb.length != 10)) { | |
1558 | printk("not responding to second PCB\n"); | |
1559 | } | |
1560 | printk("rev %d.%d, %dk\n", adapter->rx_pcb.data.info.major_vers, adapter->rx_pcb.data.info.minor_vers, adapter->rx_pcb.data.info.RAM_sz); | |
1561 | ||
1562 | /* | |
1563 | * reconfigure the adapter memory to better suit our purposes | |
1564 | */ | |
1565 | adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY; | |
1566 | adapter->tx_pcb.length = 12; | |
1567 | adapter->tx_pcb.data.memconf.cmd_q = 8; | |
1568 | adapter->tx_pcb.data.memconf.rcv_q = 8; | |
1569 | adapter->tx_pcb.data.memconf.mcast = 10; | |
1570 | adapter->tx_pcb.data.memconf.frame = 10; | |
1571 | adapter->tx_pcb.data.memconf.rcv_b = 10; | |
1572 | adapter->tx_pcb.data.memconf.progs = 0; | |
1573 | if (!send_pcb(dev, &adapter->tx_pcb) || | |
1574 | !receive_pcb(dev, &adapter->rx_pcb) || | |
1575 | (adapter->rx_pcb.command != CMD_CONFIGURE_ADAPTER_RESPONSE) || | |
1576 | (adapter->rx_pcb.length != 2)) { | |
1577 | printk(KERN_ERR "%s: could not configure adapter memory\n", dev->name); | |
1578 | } | |
1579 | if (adapter->rx_pcb.data.configure) { | |
1580 | printk(KERN_ERR "%s: adapter configuration failed\n", dev->name); | |
1581 | } | |
1582 | ||
1583 | dev->open = elp_open; /* local */ | |
1584 | dev->stop = elp_close; /* local */ | |
1585 | dev->get_stats = elp_get_stats; /* local */ | |
1586 | dev->hard_start_xmit = elp_start_xmit; /* local */ | |
1587 | dev->tx_timeout = elp_timeout; /* local */ | |
1588 | dev->watchdog_timeo = 10*HZ; | |
1589 | dev->set_multicast_list = elp_set_mc_list; /* local */ | |
1590 | dev->ethtool_ops = &netdev_ethtool_ops; /* local */ | |
1591 | ||
1592 | memset(&(adapter->stats), 0, sizeof(struct net_device_stats)); | |
1593 | dev->mem_start = dev->mem_end = 0; | |
1594 | ||
1595 | err = register_netdev(dev); | |
1596 | if (err) | |
1597 | goto out; | |
1598 | ||
1599 | return 0; | |
1600 | out: | |
1601 | release_region(dev->base_addr, ELP_IO_EXTENT); | |
1602 | return err; | |
1603 | } | |
1604 | ||
1605 | #ifndef MODULE | |
1606 | struct net_device * __init elplus_probe(int unit) | |
1607 | { | |
1608 | struct net_device *dev = alloc_etherdev(sizeof(elp_device)); | |
1609 | int err; | |
1610 | if (!dev) | |
1611 | return ERR_PTR(-ENOMEM); | |
1612 | ||
1613 | sprintf(dev->name, "eth%d", unit); | |
1614 | netdev_boot_setup_check(dev); | |
1615 | ||
1616 | err = elplus_setup(dev); | |
1617 | if (err) { | |
1618 | free_netdev(dev); | |
1619 | return ERR_PTR(err); | |
1620 | } | |
1621 | return dev; | |
1622 | } | |
1623 | ||
1624 | #else | |
1625 | static struct net_device *dev_3c505[ELP_MAX_CARDS]; | |
1626 | static int io[ELP_MAX_CARDS]; | |
1627 | static int irq[ELP_MAX_CARDS]; | |
1628 | static int dma[ELP_MAX_CARDS]; | |
1629 | module_param_array(io, int, NULL, 0); | |
1630 | module_param_array(irq, int, NULL, 0); | |
1631 | module_param_array(dma, int, NULL, 0); | |
1632 | MODULE_PARM_DESC(io, "EtherLink Plus I/O base address(es)"); | |
1633 | MODULE_PARM_DESC(irq, "EtherLink Plus IRQ number(s) (assigned)"); | |
1634 | MODULE_PARM_DESC(dma, "EtherLink Plus DMA channel(s)"); | |
1635 | ||
1636 | int init_module(void) | |
1637 | { | |
1638 | int this_dev, found = 0; | |
1639 | ||
1640 | for (this_dev = 0; this_dev < ELP_MAX_CARDS; this_dev++) { | |
1641 | struct net_device *dev = alloc_etherdev(sizeof(elp_device)); | |
1642 | if (!dev) | |
1643 | break; | |
1644 | ||
1645 | dev->irq = irq[this_dev]; | |
1646 | dev->base_addr = io[this_dev]; | |
1647 | if (dma[this_dev]) { | |
1648 | dev->dma = dma[this_dev]; | |
1649 | } else { | |
1650 | dev->dma = ELP_DMA; | |
1651 | printk(KERN_WARNING "3c505.c: warning, using default DMA channel,\n"); | |
1652 | } | |
1653 | if (io[this_dev] == 0) { | |
1654 | if (this_dev) { | |
1655 | free_netdev(dev); | |
1656 | break; | |
1657 | } | |
1658 | printk(KERN_NOTICE "3c505.c: module autoprobe not recommended, give io=xx.\n"); | |
1659 | } | |
1660 | if (elplus_setup(dev) != 0) { | |
1661 | printk(KERN_WARNING "3c505.c: Failed to register card at 0x%x.\n", io[this_dev]); | |
1662 | free_netdev(dev); | |
1663 | break; | |
1664 | } | |
1665 | dev_3c505[this_dev] = dev; | |
1666 | found++; | |
1667 | } | |
1668 | if (!found) | |
1669 | return -ENODEV; | |
1670 | return 0; | |
1671 | } | |
1672 | ||
1673 | void cleanup_module(void) | |
1674 | { | |
1675 | int this_dev; | |
1676 | ||
1677 | for (this_dev = 0; this_dev < ELP_MAX_CARDS; this_dev++) { | |
1678 | struct net_device *dev = dev_3c505[this_dev]; | |
1679 | if (dev) { | |
1680 | unregister_netdev(dev); | |
1681 | release_region(dev->base_addr, ELP_IO_EXTENT); | |
1682 | free_netdev(dev); | |
1683 | } | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | #endif /* MODULE */ | |
1688 | MODULE_LICENSE("GPL"); |