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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / net / wan / sdla.c
blob73e2f278093220e4bd3f8f5094c9ab55a1d190f5
1 /*
2 * SDLA An implementation of a driver for the Sangoma S502/S508 series
3 * multi-protocol PC interface card. Initial offering is with
4 * the DLCI driver, providing Frame Relay support for linux.
5 *
6 * Global definitions for the Frame relay interface.
7 *
8 * Version: @(#)sdla.c 0.30 12 Sep 1996
9 *
10 * Credits: Sangoma Technologies, for the use of 2 cards for an extended
11 * period of time.
12 * David Mandelstam <dm@sangoma.com> for getting me started on
13 * this project, and incentive to complete it.
14 * Gene Kozen <74604.152@compuserve.com> for providing me with
15 * important information about the cards.
16 *
17 * Author: Mike McLagan <mike.mclagan@linux.org>
18 *
19 * Changes:
20 * 0.15 Mike McLagan Improved error handling, packet dropping
21 * 0.20 Mike McLagan New transmit/receive flags for config
22 * If in FR mode, don't accept packets from
23 * non DLCI devices.
24 * 0.25 Mike McLagan Fixed problem with rejecting packets
25 * from non DLCI devices.
26 * 0.30 Mike McLagan Fixed kernel panic when used with modified
27 * ifconfig
28 *
29 * This program is free software; you can redistribute it and/or
30 * modify it under the terms of the GNU General Public License
31 * as published by the Free Software Foundation; either version
32 * 2 of the License, or (at your option) any later version.
33 */
34
35 #include <linux/module.h>
36 #include <linux/kernel.h>
37 #include <linux/types.h>
38 #include <linux/fcntl.h>
39 #include <linux/interrupt.h>
40 #include <linux/ptrace.h>
41 #include <linux/ioport.h>
42 #include <linux/in.h>
43 #include <linux/slab.h>
44 #include <linux/string.h>
45 #include <linux/timer.h>
46 #include <linux/errno.h>
47 #include <linux/init.h>
48 #include <linux/netdevice.h>
49 #include <linux/skbuff.h>
50 #include <linux/if_arp.h>
51 #include <linux/if_frad.h>
52 #include <linux/sdla.h>
53 #include <linux/bitops.h>
54
55 #include <asm/system.h>
56 #include <asm/io.h>
57 #include <asm/dma.h>
58 #include <asm/uaccess.h>
59
60 static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
61
62 static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
63
64 static unsigned int valid_mem[] = {
65 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
66 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
67 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
68 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
69 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
70
71 static DEFINE_SPINLOCK(sdla_lock);
72
73 /*********************************************************
74 *
75 * these are the core routines that access the card itself
76 *
77 *********************************************************/
78
79 #define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
80
81 static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
82 {
83 char *temp;
84 const void *base;
85 int offset, bytes;
86
87 temp = buf;
88 while(len)
89 {
90 offset = addr & SDLA_ADDR_MASK;
91 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
92 base = (const void *) (dev->mem_start + offset);
93
94 SDLA_WINDOW(dev, addr);
95 memcpy(temp, base, bytes);
96
97 addr += bytes;
98 temp += bytes;
99 len -= bytes;
100 }
101 }
102
103 static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
104 {
105 unsigned long flags;
106 spin_lock_irqsave(&sdla_lock, flags);
107 __sdla_read(dev, addr, buf, len);
108 spin_unlock_irqrestore(&sdla_lock, flags);
109 }
110
111 static void __sdla_write(struct net_device *dev, int addr,
112 const void *buf, short len)
113 {
114 const char *temp;
115 void *base;
116 int offset, bytes;
117
118 temp = buf;
119 while(len)
120 {
121 offset = addr & SDLA_ADDR_MASK;
122 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
123 base = (void *) (dev->mem_start + offset);
124
125 SDLA_WINDOW(dev, addr);
126 memcpy(base, temp, bytes);
127
128 addr += bytes;
129 temp += bytes;
130 len -= bytes;
131 }
132 }
133
134 static void sdla_write(struct net_device *dev, int addr,
135 const void *buf, short len)
136 {
137 unsigned long flags;
138
139 spin_lock_irqsave(&sdla_lock, flags);
140 __sdla_write(dev, addr, buf, len);
141 spin_unlock_irqrestore(&sdla_lock, flags);
142 }
143
144
145 static void sdla_clear(struct net_device *dev)
146 {
147 unsigned long flags;
148 char *base;
149 int len, addr, bytes;
150
151 len = 65536;
152 addr = 0;
153 bytes = SDLA_WINDOW_SIZE;
154 base = (void *) dev->mem_start;
155
156 spin_lock_irqsave(&sdla_lock, flags);
157 while(len)
158 {
159 SDLA_WINDOW(dev, addr);
160 memset(base, 0, bytes);
161
162 addr += bytes;
163 len -= bytes;
164 }
165 spin_unlock_irqrestore(&sdla_lock, flags);
166
167 }
168
169 static char sdla_byte(struct net_device *dev, int addr)
170 {
171 unsigned long flags;
172 char byte, *temp;
173
174 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
175
176 spin_lock_irqsave(&sdla_lock, flags);
177 SDLA_WINDOW(dev, addr);
178 byte = *temp;
179 spin_unlock_irqrestore(&sdla_lock, flags);
180
181 return(byte);
182 }
183
184 static void sdla_stop(struct net_device *dev)
185 {
186 struct frad_local *flp;
187
188 flp = dev->priv;
189 switch(flp->type)
190 {
191 case SDLA_S502A:
192 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
193 flp->state = SDLA_HALT;
194 break;
195 case SDLA_S502E:
196 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
197 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
198 flp->state = SDLA_S502E_ENABLE;
199 break;
200 case SDLA_S507:
201 flp->state &= ~SDLA_CPUEN;
202 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
203 break;
204 case SDLA_S508:
205 flp->state &= ~SDLA_CPUEN;
206 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
207 break;
208 }
209 }
210
211 static void sdla_start(struct net_device *dev)
212 {
213 struct frad_local *flp;
214
215 flp = dev->priv;
216 switch(flp->type)
217 {
218 case SDLA_S502A:
219 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
220 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
221 flp->state = SDLA_S502A_START;
222 break;
223 case SDLA_S502E:
224 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
225 outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
226 flp->state = 0;
227 break;
228 case SDLA_S507:
229 flp->state |= SDLA_CPUEN;
230 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
231 break;
232 case SDLA_S508:
233 flp->state |= SDLA_CPUEN;
234 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
235 break;
236 }
237 }
238
239 /****************************************************
240 *
241 * this is used for the S502A/E cards to determine
242 * the speed of the onboard CPU. Calibration is
243 * necessary for the Frame Relay code uploaded
244 * later. Incorrect results cause timing problems
245 * with link checks & status messages
246 *
247 ***************************************************/
248
249 static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
250 {
251 unsigned long start, done, now;
252 char resp, *temp;
253
254 start = now = jiffies;
255 done = jiffies + jiffs;
256
257 temp = (void *)dev->mem_start;
258 temp += z80_addr & SDLA_ADDR_MASK;
259
260 resp = ~resp1;
261 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
262 {
263 if (jiffies != now)
264 {
265 SDLA_WINDOW(dev, z80_addr);
266 now = jiffies;
267 resp = *temp;
268 }
269 }
270 return(time_before(jiffies, done) ? jiffies - start : -1);
271 }
272
273 /* constants for Z80 CPU speed */
274 #define Z80_READY '1' /* Z80 is ready to begin */
275 #define LOADER_READY '2' /* driver is ready to begin */
276 #define Z80_SCC_OK '3' /* SCC is on board */
277 #define Z80_SCC_BAD '4' /* SCC was not found */
278
279 static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
280 {
281 int jiffs;
282 char data;
283
284 sdla_start(dev);
285 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
286 return(-EIO);
287
288 data = LOADER_READY;
289 sdla_write(dev, 0, &data, 1);
290
291 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
292 return(-EIO);
293
294 sdla_stop(dev);
295 sdla_read(dev, 0, &data, 1);
296
297 if (data == Z80_SCC_BAD)
298 {
299 printk("%s: SCC bad\n", dev->name);
300 return(-EIO);
301 }
302
303 if (data != Z80_SCC_OK)
304 return(-EINVAL);
305
306 if (jiffs < 165)
307 ifr->ifr_mtu = SDLA_CPU_16M;
308 else if (jiffs < 220)
309 ifr->ifr_mtu = SDLA_CPU_10M;
310 else if (jiffs < 258)
311 ifr->ifr_mtu = SDLA_CPU_8M;
312 else if (jiffs < 357)
313 ifr->ifr_mtu = SDLA_CPU_7M;
314 else if (jiffs < 467)
315 ifr->ifr_mtu = SDLA_CPU_5M;
316 else
317 ifr->ifr_mtu = SDLA_CPU_3M;
318
319 return(0);
320 }
321
322 /************************************************
323 *
324 * Direct interaction with the Frame Relay code
325 * starts here.
326 *
327 ************************************************/
328
329 struct _dlci_stat
330 {
331 short dlci;
332 char flags;
333 } __attribute__((packed));
334
335 struct _frad_stat
336 {
337 char flags;
338 struct _dlci_stat dlcis[SDLA_MAX_DLCI];
339 };
340
341 static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
342 {
343 struct _dlci_stat *pstatus;
344 short *pdlci;
345 int i;
346 char *state, line[30];
347
348 switch (ret)
349 {
350 case SDLA_RET_MODEM:
351 state = data;
352 if (*state & SDLA_MODEM_DCD_LOW)
353 printk(KERN_INFO "%s: Modem DCD unexpectedly low!\n", dev->name);
354 if (*state & SDLA_MODEM_CTS_LOW)
355 printk(KERN_INFO "%s: Modem CTS unexpectedly low!\n", dev->name);
356 /* I should probably do something about this! */
357 break;
358
359 case SDLA_RET_CHANNEL_OFF:
360 printk(KERN_INFO "%s: Channel became inoperative!\n", dev->name);
361 /* same here */
362 break;
363
364 case SDLA_RET_CHANNEL_ON:
365 printk(KERN_INFO "%s: Channel became operative!\n", dev->name);
366 /* same here */
367 break;
368
369 case SDLA_RET_DLCI_STATUS:
370 printk(KERN_INFO "%s: Status change reported by Access Node.\n", dev->name);
371 len /= sizeof(struct _dlci_stat);
372 for(pstatus = data, i=0;i < len;i++,pstatus++)
373 {
374 if (pstatus->flags & SDLA_DLCI_NEW)
375 state = "new";
376 else if (pstatus->flags & SDLA_DLCI_DELETED)
377 state = "deleted";
378 else if (pstatus->flags & SDLA_DLCI_ACTIVE)
379 state = "active";
380 else
381 {
382 sprintf(line, "unknown status: %02X", pstatus->flags);
383 state = line;
384 }
385 printk(KERN_INFO "%s: DLCI %i: %s.\n", dev->name, pstatus->dlci, state);
386 /* same here */
387 }
388 break;
389
390 case SDLA_RET_DLCI_UNKNOWN:
391 printk(KERN_INFO "%s: Received unknown DLCIs:", dev->name);
392 len /= sizeof(short);
393 for(pdlci = data,i=0;i < len;i++,pdlci++)
394 printk(" %i", *pdlci);
395 printk("\n");
396 break;
397
398 case SDLA_RET_TIMEOUT:
399 printk(KERN_ERR "%s: Command timed out!\n", dev->name);
400 break;
401
402 case SDLA_RET_BUF_OVERSIZE:
403 printk(KERN_INFO "%s: Bc/CIR overflow, acceptable size is %i\n", dev->name, len);
404 break;
405
406 case SDLA_RET_BUF_TOO_BIG:
407 printk(KERN_INFO "%s: Buffer size over specified max of %i\n", dev->name, len);
408 break;
409
410 case SDLA_RET_CHANNEL_INACTIVE:
411 case SDLA_RET_DLCI_INACTIVE:
412 case SDLA_RET_CIR_OVERFLOW:
413 case SDLA_RET_NO_BUFS:
414 if (cmd == SDLA_INFORMATION_WRITE)
415 break;
416
417 default:
418 printk(KERN_DEBUG "%s: Cmd 0x%2.2X generated return code 0x%2.2X\n", dev->name, cmd, ret);
419 /* Further processing could be done here */
420 break;
421 }
422 }
423
424 static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags,
425 void *inbuf, short inlen, void *outbuf, short *outlen)
426 {
427 static struct _frad_stat status;
428 struct frad_local *flp;
429 struct sdla_cmd *cmd_buf;
430 unsigned long pflags;
431 unsigned long jiffs;
432 int ret, waiting, len;
433 long window;
434
435 flp = dev->priv;
436 window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
437 cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
438 ret = 0;
439 len = 0;
440 jiffs = jiffies + HZ; /* 1 second is plenty */
441
442 spin_lock_irqsave(&sdla_lock, pflags);
443 SDLA_WINDOW(dev, window);
444 cmd_buf->cmd = cmd;
445 cmd_buf->dlci = dlci;
446 cmd_buf->flags = flags;
447
448 if (inbuf)
449 memcpy(cmd_buf->data, inbuf, inlen);
450
451 cmd_buf->length = inlen;
452
453 cmd_buf->opp_flag = 1;
454 spin_unlock_irqrestore(&sdla_lock, pflags);
455
456 waiting = 1;
457 len = 0;
458 while (waiting && time_before_eq(jiffies, jiffs))
459 {
460 if (waiting++ % 3)
461 {
462 spin_lock_irqsave(&sdla_lock, pflags);
463 SDLA_WINDOW(dev, window);
464 waiting = ((volatile int)(cmd_buf->opp_flag));
465 spin_unlock_irqrestore(&sdla_lock, pflags);
466 }
467 }
468
469 if (!waiting)
470 {
471
472 spin_lock_irqsave(&sdla_lock, pflags);
473 SDLA_WINDOW(dev, window);
474 ret = cmd_buf->retval;
475 len = cmd_buf->length;
476 if (outbuf && outlen)
477 {
478 *outlen = *outlen >= len ? len : *outlen;
479
480 if (*outlen)
481 memcpy(outbuf, cmd_buf->data, *outlen);
482 }
483
484 /* This is a local copy that's used for error handling */
485 if (ret)
486 memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
487
488 spin_unlock_irqrestore(&sdla_lock, pflags);
489 }
490 else
491 ret = SDLA_RET_TIMEOUT;
492
493 if (ret != SDLA_RET_OK)
494 sdla_errors(dev, cmd, dlci, ret, len, &status);
495
496 return(ret);
497 }
498
499 /***********************************************
500 *
501 * these functions are called by the DLCI driver
502 *
503 ***********************************************/
504
505 static int sdla_reconfig(struct net_device *dev);
506
507 static int sdla_activate(struct net_device *slave, struct net_device *master)
508 {
509 struct frad_local *flp;
510 int i;
511
512 flp = slave->priv;
513
514 for(i=0;i<CONFIG_DLCI_MAX;i++)
515 if (flp->master[i] == master)
516 break;
517
518 if (i == CONFIG_DLCI_MAX)
519 return(-ENODEV);
520
521 flp->dlci[i] = abs(flp->dlci[i]);
522
523 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
524 sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
525
526 return(0);
527 }
528
529 static int sdla_deactivate(struct net_device *slave, struct net_device *master)
530 {
531 struct frad_local *flp;
532 int i;
533
534 flp = slave->priv;
535
536 for(i=0;i<CONFIG_DLCI_MAX;i++)
537 if (flp->master[i] == master)
538 break;
539
540 if (i == CONFIG_DLCI_MAX)
541 return(-ENODEV);
542
543 flp->dlci[i] = -abs(flp->dlci[i]);
544
545 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
546 sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
547
548 return(0);
549 }
550
551 static int sdla_assoc(struct net_device *slave, struct net_device *master)
552 {
553 struct frad_local *flp;
554 int i;
555
556 if (master->type != ARPHRD_DLCI)
557 return(-EINVAL);
558
559 flp = slave->priv;
560
561 for(i=0;i<CONFIG_DLCI_MAX;i++)
562 {
563 if (!flp->master[i])
564 break;
565 if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
566 return(-EADDRINUSE);
567 }
568
569 if (i == CONFIG_DLCI_MAX)
570 return(-EMLINK); /* #### Alan: Comments on this ?? */
571
572
573 flp->master[i] = master;
574 flp->dlci[i] = -*(short *)(master->dev_addr);
575 master->mtu = slave->mtu;
576
577 if (netif_running(slave)) {
578 if (flp->config.station == FRAD_STATION_CPE)
579 sdla_reconfig(slave);
580 else
581 sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
582 }
583
584 return(0);
585 }
586
587 static int sdla_deassoc(struct net_device *slave, struct net_device *master)
588 {
589 struct frad_local *flp;
590 int i;
591
592 flp = slave->priv;
593
594 for(i=0;i<CONFIG_DLCI_MAX;i++)
595 if (flp->master[i] == master)
596 break;
597
598 if (i == CONFIG_DLCI_MAX)
599 return(-ENODEV);
600
601 flp->master[i] = NULL;
602 flp->dlci[i] = 0;
603
604
605 if (netif_running(slave)) {
606 if (flp->config.station == FRAD_STATION_CPE)
607 sdla_reconfig(slave);
608 else
609 sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
610 }
611
612 return(0);
613 }
614
615 static int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
616 {
617 struct frad_local *flp;
618 struct dlci_local *dlp;
619 int i;
620 short len, ret;
621
622 flp = slave->priv;
623
624 for(i=0;i<CONFIG_DLCI_MAX;i++)
625 if (flp->master[i] == master)
626 break;
627
628 if (i == CONFIG_DLCI_MAX)
629 return(-ENODEV);
630
631 dlp = master->priv;
632
633 ret = SDLA_RET_OK;
634 len = sizeof(struct dlci_conf);
635 if (netif_running(slave)) {
636 if (get)
637 ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
638 NULL, 0, &dlp->config, &len);
639 else
640 ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
641 &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
642 }
643
644 return(ret == SDLA_RET_OK ? 0 : -EIO);
645 }
646
647 /**************************
648 *
649 * now for the Linux driver
650 *
651 **************************/
652
653 /* NOTE: the DLCI driver deals with freeing the SKB!! */
654 static int sdla_transmit(struct sk_buff *skb, struct net_device *dev)
655 {
656 struct frad_local *flp;
657 int ret, addr, accept, i;
658 short size;
659 unsigned long flags;
660 struct buf_entry *pbuf;
661
662 flp = dev->priv;
663 ret = 0;
664 accept = 1;
665
666 netif_stop_queue(dev);
667
668 /*
669 * stupid GateD insists on setting up the multicast router thru us
670 * and we're ill equipped to handle a non Frame Relay packet at this
671 * time!
672 */
673
674 accept = 1;
675 switch (dev->type)
676 {
677 case ARPHRD_FRAD:
678 if (skb->dev->type != ARPHRD_DLCI)
679 {
680 printk(KERN_WARNING "%s: Non DLCI device, type %i, tried to send on FRAD module.\n", dev->name, skb->dev->type);
681 accept = 0;
682 }
683 break;
684 default:
685 printk(KERN_WARNING "%s: unknown firmware type 0x%4.4X\n", dev->name, dev->type);
686 accept = 0;
687 break;
688 }
689 if (accept)
690 {
691 /* this is frame specific, but till there's a PPP module, it's the default */
692 switch (flp->type)
693 {
694 case SDLA_S502A:
695 case SDLA_S502E:
696 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
697 break;
698 case SDLA_S508:
699 size = sizeof(addr);
700 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
701 if (ret == SDLA_RET_OK)
702 {
703
704 spin_lock_irqsave(&sdla_lock, flags);
705 SDLA_WINDOW(dev, addr);
706 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
707 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
708 SDLA_WINDOW(dev, addr);
709 pbuf->opp_flag = 1;
710 spin_unlock_irqrestore(&sdla_lock, flags);
711 }
712 break;
713 }
714 switch (ret)
715 {
716 case SDLA_RET_OK:
717 flp->stats.tx_packets++;
718 ret = DLCI_RET_OK;
719 break;
720
721 case SDLA_RET_CIR_OVERFLOW:
722 case SDLA_RET_BUF_OVERSIZE:
723 case SDLA_RET_NO_BUFS:
724 flp->stats.tx_dropped++;
725 ret = DLCI_RET_DROP;
726 break;
727
728 default:
729 flp->stats.tx_errors++;
730 ret = DLCI_RET_ERR;
731 break;
732 }
733 }
734 netif_wake_queue(dev);
735 for(i=0;i<CONFIG_DLCI_MAX;i++)
736 {
737 if(flp->master[i]!=NULL)
738 netif_wake_queue(flp->master[i]);
739 }
740 return(ret);
741 }
742
743 static void sdla_receive(struct net_device *dev)
744 {
745 struct net_device *master;
746 struct frad_local *flp;
747 struct dlci_local *dlp;
748 struct sk_buff *skb;
749
750 struct sdla_cmd *cmd;
751 struct buf_info *pbufi;
752 struct buf_entry *pbuf;
753
754 unsigned long flags;
755 int i=0, received, success, addr, buf_base, buf_top;
756 short dlci, len, len2, split;
757
758 flp = dev->priv;
759 success = 1;
760 received = addr = buf_top = buf_base = 0;
761 len = dlci = 0;
762 skb = NULL;
763 master = NULL;
764 cmd = NULL;
765 pbufi = NULL;
766 pbuf = NULL;
767
768 spin_lock_irqsave(&sdla_lock, flags);
769
770 switch (flp->type)
771 {
772 case SDLA_S502A:
773 case SDLA_S502E:
774 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
775 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
776 success = cmd->opp_flag;
777 if (!success)
778 break;
779
780 dlci = cmd->dlci;
781 len = cmd->length;
782 break;
783
784 case SDLA_S508:
785 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
786 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
787 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
788 success = pbuf->opp_flag;
789 if (!success)
790 break;
791
792 buf_top = pbufi->buf_top;
793 buf_base = pbufi->buf_base;
794 dlci = pbuf->dlci;
795 len = pbuf->length;
796 addr = pbuf->buf_addr;
797 break;
798 }
799
800 /* common code, find the DLCI and get the SKB */
801 if (success)
802 {
803 for (i=0;i<CONFIG_DLCI_MAX;i++)
804 if (flp->dlci[i] == dlci)
805 break;
806
807 if (i == CONFIG_DLCI_MAX)
808 {
809 printk(KERN_NOTICE "%s: Received packet from invalid DLCI %i, ignoring.", dev->name, dlci);
810 flp->stats.rx_errors++;
811 success = 0;
812 }
813 }
814
815 if (success)
816 {
817 master = flp->master[i];
818 skb = dev_alloc_skb(len + sizeof(struct frhdr));
819 if (skb == NULL)
820 {
821 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
822 flp->stats.rx_dropped++;
823 success = 0;
824 }
825 else
826 skb_reserve(skb, sizeof(struct frhdr));
827 }
828
829 /* pick up the data */
830 switch (flp->type)
831 {
832 case SDLA_S502A:
833 case SDLA_S502E:
834 if (success)
835 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
836
837 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
838 cmd->opp_flag = 0;
839 break;
840
841 case SDLA_S508:
842 if (success)
843 {
844 /* is this buffer split off the end of the internal ring buffer */
845 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
846 len2 = len - split;
847
848 __sdla_read(dev, addr, skb_put(skb, len2), len2);
849 if (split)
850 __sdla_read(dev, buf_base, skb_put(skb, split), split);
851 }
852
853 /* increment the buffer we're looking at */
854 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
855 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
856 pbuf->opp_flag = 0;
857 break;
858 }
859
860 if (success)
861 {
862 flp->stats.rx_packets++;
863 dlp = master->priv;
864 (*dlp->receive)(skb, master);
865 }
866
867 spin_unlock_irqrestore(&sdla_lock, flags);
868 }
869
870 static irqreturn_t sdla_isr(int dummy, void *dev_id)
871 {
872 struct net_device *dev;
873 struct frad_local *flp;
874 char byte;
875
876 dev = dev_id;
877
878 flp = netdev_priv(dev);
879
880 if (!flp->initialized)
881 {
882 printk(KERN_WARNING "%s: irq %d for uninitialized device.\n",
883 dev->name, dev->irq);
884 return IRQ_NONE;
885 }
886
887 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
888 switch (byte)
889 {
890 case SDLA_INTR_RX:
891 sdla_receive(dev);
892 break;
893
894 /* the command will get an error return, which is processed above */
895 case SDLA_INTR_MODEM:
896 case SDLA_INTR_STATUS:
897 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
898 break;
899
900 case SDLA_INTR_TX:
901 case SDLA_INTR_COMPLETE:
902 case SDLA_INTR_TIMER:
903 printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, byte);
904 break;
905 }
906
907 /* the S502E requires a manual acknowledgement of the interrupt */
908 if (flp->type == SDLA_S502E)
909 {
910 flp->state &= ~SDLA_S502E_INTACK;
911 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
912 flp->state |= SDLA_S502E_INTACK;
913 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
914 }
915
916 /* this clears the byte, informing the Z80 we're done */
917 byte = 0;
918 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
919 return IRQ_HANDLED;
920 }
921
922 static void sdla_poll(unsigned long device)
923 {
924 struct net_device *dev;
925 struct frad_local *flp;
926
927 dev = (struct net_device *) device;
928 flp = dev->priv;
929
930 if (sdla_byte(dev, SDLA_502_RCV_BUF))
931 sdla_receive(dev);
932
933 flp->timer.expires = 1;
934 add_timer(&flp->timer);
935 }
936
937 static int sdla_close(struct net_device *dev)
938 {
939 struct frad_local *flp;
940 struct intr_info intr;
941 int len, i;
942 short dlcis[CONFIG_DLCI_MAX];
943
944 flp = dev->priv;
945
946 len = 0;
947 for(i=0;i<CONFIG_DLCI_MAX;i++)
948 if (flp->dlci[i])
949 dlcis[len++] = abs(flp->dlci[i]);
950 len *= 2;
951
952 if (flp->config.station == FRAD_STATION_NODE)
953 {
954 for(i=0;i<CONFIG_DLCI_MAX;i++)
955 if (flp->dlci[i] > 0)
956 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
957 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
958 }
959
960 memset(&intr, 0, sizeof(intr));
961 /* let's start up the reception */
962 switch(flp->type)
963 {
964 case SDLA_S502A:
965 del_timer(&flp->timer);
966 break;
967
968 case SDLA_S502E:
969 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
970 flp->state &= ~SDLA_S502E_INTACK;
971 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
972 break;
973
974 case SDLA_S507:
975 break;
976
977 case SDLA_S508:
978 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
979 flp->state &= ~SDLA_S508_INTEN;
980 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
981 break;
982 }
983
984 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
985
986 netif_stop_queue(dev);
987
988 return(0);
989 }
990
991 struct conf_data {
992 struct frad_conf config;
993 short dlci[CONFIG_DLCI_MAX];
994 };
995
996 static int sdla_open(struct net_device *dev)
997 {
998 struct frad_local *flp;
999 struct dlci_local *dlp;
1000 struct conf_data data;
1001 struct intr_info intr;
1002 int len, i;
1003 char byte;
1004
1005 flp = dev->priv;
1006
1007 if (!flp->initialized)
1008 return(-EPERM);
1009
1010 if (!flp->configured)
1011 return(-EPERM);
1012
1013 /* time to send in the configuration */
1014 len = 0;
1015 for(i=0;i<CONFIG_DLCI_MAX;i++)
1016 if (flp->dlci[i])
1017 data.dlci[len++] = abs(flp->dlci[i]);
1018 len *= 2;
1019
1020 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1021 len += sizeof(struct frad_conf);
1022
1023 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1024 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1025
1026 if (flp->type == SDLA_S508)
1027 flp->buffer = 0;
1028
1029 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1030
1031 /* let's start up the reception */
1032 memset(&intr, 0, sizeof(intr));
1033 switch(flp->type)
1034 {
1035 case SDLA_S502A:
1036 flp->timer.expires = 1;
1037 add_timer(&flp->timer);
1038 break;
1039
1040 case SDLA_S502E:
1041 flp->state |= SDLA_S502E_ENABLE;
1042 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1043 flp->state |= SDLA_S502E_INTACK;
1044 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1045 byte = 0;
1046 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1047 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1048 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1049 break;
1050
1051 case SDLA_S507:
1052 break;
1053
1054 case SDLA_S508:
1055 flp->state |= SDLA_S508_INTEN;
1056 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1057 byte = 0;
1058 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1059 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1060 intr.irq = dev->irq;
1061 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1062 break;
1063 }
1064
1065 if (flp->config.station == FRAD_STATION_CPE)
1066 {
1067 byte = SDLA_ICS_STATUS_ENQ;
1068 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1069 }
1070 else
1071 {
1072 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1073 for(i=0;i<CONFIG_DLCI_MAX;i++)
1074 if (flp->dlci[i] > 0)
1075 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1076 }
1077
1078 /* configure any specific DLCI settings */
1079 for(i=0;i<CONFIG_DLCI_MAX;i++)
1080 if (flp->dlci[i])
1081 {
1082 dlp = flp->master[i]->priv;
1083 if (dlp->configured)
1084 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1085 }
1086
1087 netif_start_queue(dev);
1088
1089 return(0);
1090 }
1091
1092 static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
1093 {
1094 struct frad_local *flp;
1095 struct conf_data data;
1096 int i;
1097 short size;
1098
1099 if (dev->type == 0xFFFF)
1100 return(-EUNATCH);
1101
1102 flp = dev->priv;
1103
1104 if (!get)
1105 {
1106 if (netif_running(dev))
1107 return(-EBUSY);
1108
1109 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1110 return -EFAULT;
1111
1112 if (data.config.station & ~FRAD_STATION_NODE)
1113 return(-EINVAL);
1114
1115 if (data.config.flags & ~FRAD_VALID_FLAGS)
1116 return(-EINVAL);
1117
1118 if ((data.config.kbaud < 0) ||
1119 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1120 return(-EINVAL);
1121
1122 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1123 return(-EINVAL);
1124
1125 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1126 return(-EINVAL);
1127
1128 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1129 return(-EINVAL);
1130
1131 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1132 return(-EINVAL);
1133
1134 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1135 return(-EINVAL);
1136
1137 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1138 return(-EINVAL);
1139
1140 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1141 return(-EINVAL);
1142
1143 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1144 flp->config.flags |= SDLA_DIRECT_RECV;
1145
1146 if (flp->type == SDLA_S508)
1147 flp->config.flags |= SDLA_TX70_RX30;
1148
1149 if (dev->mtu != flp->config.mtu)
1150 {
1151 /* this is required to change the MTU */
1152 dev->mtu = flp->config.mtu;
1153 for(i=0;i<CONFIG_DLCI_MAX;i++)
1154 if (flp->master[i])
1155 flp->master[i]->mtu = flp->config.mtu;
1156 }
1157
1158 flp->config.mtu += sizeof(struct frhdr);
1159
1160 /* off to the races! */
1161 if (!flp->configured)
1162 sdla_start(dev);
1163
1164 flp->configured = 1;
1165 }
1166 else
1167 {
1168 /* no sense reading if the CPU isn't started */
1169 if (netif_running(dev))
1170 {
1171 size = sizeof(data);
1172 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1173 return(-EIO);
1174 }
1175 else
1176 if (flp->configured)
1177 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1178 else
1179 memset(&data.config, 0, sizeof(struct frad_conf));
1180
1181 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1182 data.config.flags &= FRAD_VALID_FLAGS;
1183 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1184 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1185 }
1186
1187 return(0);
1188 }
1189
1190 static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
1191 {
1192 struct sdla_mem mem;
1193 char *temp;
1194
1195 if(copy_from_user(&mem, info, sizeof(mem)))
1196 return -EFAULT;
1197
1198 if (read)
1199 {
1200 temp = kzalloc(mem.len, GFP_KERNEL);
1201 if (!temp)
1202 return(-ENOMEM);
1203 sdla_read(dev, mem.addr, temp, mem.len);
1204 if(copy_to_user(mem.data, temp, mem.len))
1205 {
1206 kfree(temp);
1207 return -EFAULT;
1208 }
1209 kfree(temp);
1210 }
1211 else
1212 {
1213 temp = kmalloc(mem.len, GFP_KERNEL);
1214 if (!temp)
1215 return(-ENOMEM);
1216 if(copy_from_user(temp, mem.data, mem.len))
1217 {
1218 kfree(temp);
1219 return -EFAULT;
1220 }
1221 sdla_write(dev, mem.addr, temp, mem.len);
1222 kfree(temp);
1223 }
1224 return(0);
1225 }
1226
1227 static int sdla_reconfig(struct net_device *dev)
1228 {
1229 struct frad_local *flp;
1230 struct conf_data data;
1231 int i, len;
1232
1233 flp = dev->priv;
1234
1235 len = 0;
1236 for(i=0;i<CONFIG_DLCI_MAX;i++)
1237 if (flp->dlci[i])
1238 data.dlci[len++] = flp->dlci[i];
1239 len *= 2;
1240
1241 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1242 len += sizeof(struct frad_conf);
1243
1244 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1245 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1246 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1247
1248 return(0);
1249 }
1250
1251 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1252 {
1253 struct frad_local *flp;
1254
1255 if(!capable(CAP_NET_ADMIN))
1256 return -EPERM;
1257
1258 flp = dev->priv;
1259
1260 if (!flp->initialized)
1261 return(-EINVAL);
1262
1263 switch (cmd)
1264 {
1265 case FRAD_GET_CONF:
1266 case FRAD_SET_CONF:
1267 return(sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF));
1268
1269 case SDLA_IDENTIFY:
1270 ifr->ifr_flags = flp->type;
1271 break;
1272
1273 case SDLA_CPUSPEED:
1274 return(sdla_cpuspeed(dev, ifr));
1275
1276 /* ==========================================================
1277 NOTE: This is rather a useless action right now, as the
1278 current driver does not support protocols other than
1279 FR. However, Sangoma has modules for a number of
1280 other protocols in the works.
1281 ============================================================*/
1282 case SDLA_PROTOCOL:
1283 if (flp->configured)
1284 return(-EALREADY);
1285
1286 switch (ifr->ifr_flags)
1287 {
1288 case ARPHRD_FRAD:
1289 dev->type = ifr->ifr_flags;
1290 break;
1291 default:
1292 return(-ENOPROTOOPT);
1293 }
1294 break;
1295
1296 case SDLA_CLEARMEM:
1297 sdla_clear(dev);
1298 break;
1299
1300 case SDLA_WRITEMEM:
1301 case SDLA_READMEM:
1302 if(!capable(CAP_SYS_RAWIO))
1303 return -EPERM;
1304 return(sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM));
1305
1306 case SDLA_START:
1307 sdla_start(dev);
1308 break;
1309
1310 case SDLA_STOP:
1311 sdla_stop(dev);
1312 break;
1313
1314 default:
1315 return(-EOPNOTSUPP);
1316 }
1317 return(0);
1318 }
1319
1320 static int sdla_change_mtu(struct net_device *dev, int new_mtu)
1321 {
1322 struct frad_local *flp;
1323
1324 flp = dev->priv;
1325
1326 if (netif_running(dev))
1327 return(-EBUSY);
1328
1329 /* for now, you can't change the MTU! */
1330 return(-EOPNOTSUPP);
1331 }
1332
1333 static int sdla_set_config(struct net_device *dev, struct ifmap *map)
1334 {
1335 struct frad_local *flp;
1336 int i;
1337 char byte;
1338 unsigned base;
1339 int err = -EINVAL;
1340
1341 flp = dev->priv;
1342
1343 if (flp->initialized)
1344 return(-EINVAL);
1345
1346 for(i=0; i < ARRAY_SIZE(valid_port); i++)
1347 if (valid_port[i] == map->base_addr)
1348 break;
1349
1350 if (i == ARRAY_SIZE(valid_port))
1351 return(-EINVAL);
1352
1353 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
1354 printk(KERN_WARNING "SDLA: io-port 0x%04lx in use \n", dev->base_addr);
1355 return(-EINVAL);
1356 }
1357 base = map->base_addr;
1358
1359 /* test for card types, S502A, S502E, S507, S508 */
1360 /* these tests shut down the card completely, so clear the state */
1361 flp->type = SDLA_UNKNOWN;
1362 flp->state = 0;
1363
1364 for(i=1;i<SDLA_IO_EXTENTS;i++)
1365 if (inb(base + i) != 0xFF)
1366 break;
1367
1368 if (i == SDLA_IO_EXTENTS) {
1369 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
1370 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
1371 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
1372 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
1373 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1374 flp->type = SDLA_S502E;
1375 goto got_type;
1376 }
1377 }
1378 }
1379
1380 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
1381 if (inb(base + i) != byte)
1382 break;
1383
1384 if (i == SDLA_IO_EXTENTS) {
1385 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1386 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
1387 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
1388 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
1389 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1390 flp->type = SDLA_S507;
1391 goto got_type;
1392 }
1393 }
1394 }
1395
1396 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1397 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
1398 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
1399 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
1400 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1401 flp->type = SDLA_S508;
1402 goto got_type;
1403 }
1404 }
1405
1406 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
1407 if (inb(base + SDLA_S502_STS) == 0x40) {
1408 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1409 if (inb(base + SDLA_S502_STS) == 0x40) {
1410 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
1411 if (inb(base + SDLA_S502_STS) == 0x44) {
1412 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1413 flp->type = SDLA_S502A;
1414 goto got_type;
1415 }
1416 }
1417 }
1418
1419 printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
1420 err = -ENODEV;
1421 goto fail;
1422
1423 got_type:
1424 switch(base) {
1425 case 0x270:
1426 case 0x280:
1427 case 0x380:
1428 case 0x390:
1429 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1430 goto fail;
1431 }
1432
1433 switch (map->irq) {
1434 case 2:
1435 if (flp->type != SDLA_S502E)
1436 goto fail;
1437 break;
1438
1439 case 10:
1440 case 11:
1441 case 12:
1442 case 15:
1443 case 4:
1444 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1445 goto fail;
1446 break;
1447 case 3:
1448 case 5:
1449 case 7:
1450 if (flp->type == SDLA_S502A)
1451 goto fail;
1452 break;
1453
1454 default:
1455 goto fail;
1456 }
1457
1458 err = -EAGAIN;
1459 if (request_irq(dev->irq, &sdla_isr, 0, dev->name, dev))
1460 goto fail;
1461
1462 if (flp->type == SDLA_S507) {
1463 switch(dev->irq) {
1464 case 3:
1465 flp->state = SDLA_S507_IRQ3;
1466 break;
1467 case 4:
1468 flp->state = SDLA_S507_IRQ4;
1469 break;
1470 case 5:
1471 flp->state = SDLA_S507_IRQ5;
1472 break;
1473 case 7:
1474 flp->state = SDLA_S507_IRQ7;
1475 break;
1476 case 10:
1477 flp->state = SDLA_S507_IRQ10;
1478 break;
1479 case 11:
1480 flp->state = SDLA_S507_IRQ11;
1481 break;
1482 case 12:
1483 flp->state = SDLA_S507_IRQ12;
1484 break;
1485 case 15:
1486 flp->state = SDLA_S507_IRQ15;
1487 break;
1488 }
1489 }
1490
1491 for(i=0; i < ARRAY_SIZE(valid_mem); i++)
1492 if (valid_mem[i] == map->mem_start)
1493 break;
1494
1495 err = -EINVAL;
1496 if (i == ARRAY_SIZE(valid_mem))
1497 goto fail2;
1498
1499 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
1500 goto fail2;
1501
1502 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
1503 goto fail2;
1504
1505 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
1506 goto fail2;
1507
1508 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1509 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1510 switch(flp->type) {
1511 case SDLA_S502A:
1512 case SDLA_S502E:
1513 switch (map->mem_start >> 16) {
1514 case 0x0A:
1515 byte |= SDLA_S502_SEG_A;
1516 break;
1517 case 0x0C:
1518 byte |= SDLA_S502_SEG_C;
1519 break;
1520 case 0x0D:
1521 byte |= SDLA_S502_SEG_D;
1522 break;
1523 case 0x0E:
1524 byte |= SDLA_S502_SEG_E;
1525 break;
1526 }
1527 break;
1528 case SDLA_S507:
1529 switch (map->mem_start >> 16) {
1530 case 0x0A:
1531 byte |= SDLA_S507_SEG_A;
1532 break;
1533 case 0x0B:
1534 byte |= SDLA_S507_SEG_B;
1535 break;
1536 case 0x0C:
1537 byte |= SDLA_S507_SEG_C;
1538 break;
1539 case 0x0E:
1540 byte |= SDLA_S507_SEG_E;
1541 break;
1542 }
1543 break;
1544 case SDLA_S508:
1545 switch (map->mem_start >> 16) {
1546 case 0x0A:
1547 byte |= SDLA_S508_SEG_A;
1548 break;
1549 case 0x0C:
1550 byte |= SDLA_S508_SEG_C;
1551 break;
1552 case 0x0D:
1553 byte |= SDLA_S508_SEG_D;
1554 break;
1555 case 0x0E:
1556 byte |= SDLA_S508_SEG_E;
1557 break;
1558 }
1559 break;
1560 }
1561
1562 /* set the memory bits, and enable access */
1563 outb(byte, base + SDLA_REG_PC_WINDOW);
1564
1565 switch(flp->type)
1566 {
1567 case SDLA_S502E:
1568 flp->state = SDLA_S502E_ENABLE;
1569 break;
1570 case SDLA_S507:
1571 flp->state |= SDLA_MEMEN;
1572 break;
1573 case SDLA_S508:
1574 flp->state = SDLA_MEMEN;
1575 break;
1576 }
1577 outb(flp->state, base + SDLA_REG_CONTROL);
1578
1579 dev->irq = map->irq;
1580 dev->base_addr = base;
1581 dev->mem_start = map->mem_start;
1582 dev->mem_end = dev->mem_start + 0x2000;
1583 flp->initialized = 1;
1584 return 0;
1585
1586 fail2:
1587 free_irq(map->irq, dev);
1588 fail:
1589 release_region(base, SDLA_IO_EXTENTS);
1590 return err;
1591 }
1592
1593 static struct net_device_stats *sdla_stats(struct net_device *dev)
1594 {
1595 struct frad_local *flp;
1596 flp = dev->priv;
1597
1598 return(&flp->stats);
1599 }
1600
1601 static void setup_sdla(struct net_device *dev)
1602 {
1603 struct frad_local *flp = dev->priv;
1604
1605 netdev_boot_setup_check(dev);
1606
1607 dev->flags = 0;
1608 dev->type = 0xFFFF;
1609 dev->hard_header_len = 0;
1610 dev->addr_len = 0;
1611 dev->mtu = SDLA_MAX_MTU;
1612
1613 dev->open = sdla_open;
1614 dev->stop = sdla_close;
1615 dev->do_ioctl = sdla_ioctl;
1616 dev->set_config = sdla_set_config;
1617 dev->get_stats = sdla_stats;
1618 dev->hard_start_xmit = sdla_transmit;
1619 dev->change_mtu = sdla_change_mtu;
1620
1621 flp->activate = sdla_activate;
1622 flp->deactivate = sdla_deactivate;
1623 flp->assoc = sdla_assoc;
1624 flp->deassoc = sdla_deassoc;
1625 flp->dlci_conf = sdla_dlci_conf;
1626
1627 init_timer(&flp->timer);
1628 flp->timer.expires = 1;
1629 flp->timer.data = (unsigned long) dev;
1630 flp->timer.function = sdla_poll;
1631 }
1632
1633 static struct net_device *sdla;
1634
1635 static int __init init_sdla(void)
1636 {
1637 int err;
1638
1639 printk("%s.\n", version);
1640
1641 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0", setup_sdla);
1642 if (!sdla)
1643 return -ENOMEM;
1644
1645 err = register_netdev(sdla);
1646 if (err)
1647 free_netdev(sdla);
1648
1649 return err;
1650 }
1651
1652 static void __exit exit_sdla(void)
1653 {
1654 struct frad_local *flp = sdla->priv;
1655
1656 unregister_netdev(sdla);
1657 if (flp->initialized) {
1658 free_irq(sdla->irq, sdla);
1659 release_region(sdla->base_addr, SDLA_IO_EXTENTS);
1660 }
1661 del_timer_sync(&flp->timer);
1662 free_netdev(sdla);
1663 }
1664
1665 MODULE_LICENSE("GPL");
1666
1667 module_init(init_sdla);
1668 module_exit(exit_sdla);
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