File: /usr/src/linux/drivers/net/wan/sdla.c
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/config.h> /* for CONFIG_DLCI_MAX */
36 #include <linux/module.h>
37
38 #include <linux/kernel.h>
39 #include <linux/sched.h>
40 #include <linux/types.h>
41 #include <linux/fcntl.h>
42 #include <linux/interrupt.h>
43 #include <linux/ptrace.h>
44 #include <linux/ioport.h>
45 #include <linux/in.h>
46 #include <linux/slab.h>
47 #include <linux/string.h>
48 #include <linux/timer.h>
49 #include <linux/errno.h>
50 #include <linux/init.h>
51
52 #include <asm/system.h>
53 #include <asm/bitops.h>
54 #include <asm/io.h>
55 #include <asm/dma.h>
56 #include <asm/uaccess.h>
57
58 #include <linux/netdevice.h>
59 #include <linux/skbuff.h>
60 #include <linux/if_arp.h>
61 #include <linux/if_frad.h>
62
63 #include <linux/sdla.h>
64
65 static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
66
67 static const char* devname = "sdla";
68
69 static unsigned int valid_port[] __initdata = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
70
71 static unsigned int valid_mem[] __initdata = {
72 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
73 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
74 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
75 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
76 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
77
78 /*********************************************************
79 *
80 * these are the core routines that access the card itself
81 *
82 *********************************************************/
83
84 #define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
85
86 static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
87 {
88 unsigned long flags;
89 char *temp, *base;
90 int offset, bytes;
91
92 temp = buf;
93 while(len)
94 {
95 offset = addr & SDLA_ADDR_MASK;
96 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
97 base = (void *) (dev->mem_start + offset);
98
99 save_flags(flags);
100 cli();
101 SDLA_WINDOW(dev, addr);
102 memcpy(temp, base, bytes);
103 restore_flags(flags);
104
105 addr += bytes;
106 temp += bytes;
107 len -= bytes;
108 }
109 }
110
111 static void sdla_write(struct net_device *dev, int addr, void *buf, short len)
112 {
113 unsigned long flags;
114 char *temp, *base;
115 int offset, bytes;
116
117 temp = buf;
118 while(len)
119 {
120 offset = addr & SDLA_ADDR_MASK;
121 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
122 base = (void *) (dev->mem_start + offset);
123 save_flags(flags);
124 cli();
125 SDLA_WINDOW(dev, addr);
126 memcpy(base, temp, bytes);
127 restore_flags(flags);
128 addr += bytes;
129 temp += bytes;
130 len -= bytes;
131 }
132 }
133
134 static void sdla_clear(struct net_device *dev)
135 {
136 unsigned long flags;
137 char *base;
138 int len, addr, bytes;
139
140 len = 65536;
141 addr = 0;
142 bytes = SDLA_WINDOW_SIZE;
143 base = (void *) dev->mem_start;
144
145 save_flags(flags);
146 cli();
147 while(len)
148 {
149 SDLA_WINDOW(dev, addr);
150 memset(base, 0, bytes);
151
152 addr += bytes;
153 len -= bytes;
154 }
155 restore_flags(flags);
156 }
157
158 static char sdla_byte(struct net_device *dev, int addr)
159 {
160 unsigned long flags;
161 char byte, *temp;
162
163 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
164
165 save_flags(flags);
166 cli();
167 SDLA_WINDOW(dev, addr);
168 byte = *temp;
169 restore_flags(flags);
170
171 return(byte);
172 }
173
174 void sdla_stop(struct net_device *dev)
175 {
176 struct frad_local *flp;
177
178 flp = dev->priv;
179 switch(flp->type)
180 {
181 case SDLA_S502A:
182 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
183 flp->state = SDLA_HALT;
184 break;
185 case SDLA_S502E:
186 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
187 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
188 flp->state = SDLA_S502E_ENABLE;
189 break;
190 case SDLA_S507:
191 flp->state &= ~SDLA_CPUEN;
192 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
193 break;
194 case SDLA_S508:
195 flp->state &= ~SDLA_CPUEN;
196 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
197 break;
198 }
199 }
200
201 void sdla_start(struct net_device *dev)
202 {
203 struct frad_local *flp;
204
205 flp = dev->priv;
206 switch(flp->type)
207 {
208 case SDLA_S502A:
209 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
210 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
211 flp->state = SDLA_S502A_START;
212 break;
213 case SDLA_S502E:
214 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
215 outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
216 flp->state = 0;
217 break;
218 case SDLA_S507:
219 flp->state |= SDLA_CPUEN;
220 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
221 break;
222 case SDLA_S508:
223 flp->state |= SDLA_CPUEN;
224 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
225 break;
226 }
227 }
228
229 /****************************************************
230 *
231 * this is used for the S502A/E cards to determine
232 * the speed of the onboard CPU. Calibration is
233 * necessary for the Frame Relay code uploaded
234 * later. Incorrect results cause timing problems
235 * with link checks & status messages
236 *
237 ***************************************************/
238
239 int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
240 {
241 unsigned long start, done, now;
242 char resp, *temp;
243
244 start = now = jiffies;
245 done = jiffies + jiffs;
246
247 temp = (void *)dev->mem_start;
248 temp += z80_addr & SDLA_ADDR_MASK;
249
250 resp = ~resp1;
251 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
252 {
253 if (jiffies != now)
254 {
255 SDLA_WINDOW(dev, z80_addr);
256 now = jiffies;
257 resp = *temp;
258 }
259 }
260 return(time_before(jiffies, done) ? jiffies - start : -1);
261 }
262
263 /* constants for Z80 CPU speed */
264 #define Z80_READY '1' /* Z80 is ready to begin */
265 #define LOADER_READY '2' /* driver is ready to begin */
266 #define Z80_SCC_OK '3' /* SCC is on board */
267 #define Z80_SCC_BAD '4' /* SCC was not found */
268
269 static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
270 {
271 int jiffs;
272 char data;
273
274 sdla_start(dev);
275 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
276 return(-EIO);
277
278 data = LOADER_READY;
279 sdla_write(dev, 0, &data, 1);
280
281 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
282 return(-EIO);
283
284 sdla_stop(dev);
285 sdla_read(dev, 0, &data, 1);
286
287 if (data == Z80_SCC_BAD)
288 {
289 printk("%s: SCC bad\n", dev->name);
290 return(-EIO);
291 }
292
293 if (data != Z80_SCC_OK)
294 return(-EINVAL);
295
296 if (jiffs < 165)
297 ifr->ifr_mtu = SDLA_CPU_16M;
298 else if (jiffs < 220)
299 ifr->ifr_mtu = SDLA_CPU_10M;
300 else if (jiffs < 258)
301 ifr->ifr_mtu = SDLA_CPU_8M;
302 else if (jiffs < 357)
303 ifr->ifr_mtu = SDLA_CPU_7M;
304 else if (jiffs < 467)
305 ifr->ifr_mtu = SDLA_CPU_5M;
306 else
307 ifr->ifr_mtu = SDLA_CPU_3M;
308
309 return(0);
310 }
311
312 /************************************************
313 *
314 * Direct interaction with the Frame Relay code
315 * starts here.
316 *
317 ************************************************/
318
319 struct _dlci_stat
320 {
321 short dlci __attribute__((packed));
322 char flags __attribute__((packed));
323 };
324
325 struct _frad_stat
326 {
327 char flags;
328 struct _dlci_stat dlcis[SDLA_MAX_DLCI];
329 };
330
331 static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
332 {
333 struct _dlci_stat *pstatus;
334 short *pdlci;
335 int i;
336 char *state, line[30];
337
338 switch (ret)
339 {
340 case SDLA_RET_MODEM:
341 state = data;
342 if (*state & SDLA_MODEM_DCD_LOW)
343 printk(KERN_INFO "%s: Modem DCD unexpectedly low!\n", dev->name);
344 if (*state & SDLA_MODEM_CTS_LOW)
345 printk(KERN_INFO "%s: Modem CTS unexpectedly low!\n", dev->name);
346 /* I should probably do something about this! */
347 break;
348
349 case SDLA_RET_CHANNEL_OFF:
350 printk(KERN_INFO "%s: Channel became inoperative!\n", dev->name);
351 /* same here */
352 break;
353
354 case SDLA_RET_CHANNEL_ON:
355 printk(KERN_INFO "%s: Channel became operative!\n", dev->name);
356 /* same here */
357 break;
358
359 case SDLA_RET_DLCI_STATUS:
360 printk(KERN_INFO "%s: Status change reported by Access Node.\n", dev->name);
361 len /= sizeof(struct _dlci_stat);
362 for(pstatus = data, i=0;i < len;i++,pstatus++)
363 {
364 if (pstatus->flags & SDLA_DLCI_NEW)
365 state = "new";
366 else if (pstatus->flags & SDLA_DLCI_DELETED)
367 state = "deleted";
368 else if (pstatus->flags & SDLA_DLCI_ACTIVE)
369 state = "active";
370 else
371 {
372 sprintf(line, "unknown status: %02X", pstatus->flags);
373 state = line;
374 }
375 printk(KERN_INFO "%s: DLCI %i: %s.\n", dev->name, pstatus->dlci, state);
376 /* same here */
377 }
378 break;
379
380 case SDLA_RET_DLCI_UNKNOWN:
381 printk(KERN_INFO "%s: Received unknown DLCIs:", dev->name);
382 len /= sizeof(short);
383 for(pdlci = data,i=0;i < len;i++,pdlci++)
384 printk(" %i", *pdlci);
385 printk("\n");
386 break;
387
388 case SDLA_RET_TIMEOUT:
389 printk(KERN_ERR "%s: Command timed out!\n", dev->name);
390 break;
391
392 case SDLA_RET_BUF_OVERSIZE:
393 printk(KERN_INFO "%s: Bc/CIR overflow, acceptable size is %i\n", dev->name, len);
394 break;
395
396 case SDLA_RET_BUF_TOO_BIG:
397 printk(KERN_INFO "%s: Buffer size over specified max of %i\n", dev->name, len);
398 break;
399
400 case SDLA_RET_CHANNEL_INACTIVE:
401 case SDLA_RET_DLCI_INACTIVE:
402 case SDLA_RET_CIR_OVERFLOW:
403 case SDLA_RET_NO_BUFS:
404 if (cmd == SDLA_INFORMATION_WRITE)
405 break;
406
407 default:
408 printk(KERN_DEBUG "%s: Cmd 0x%2.2X generated return code 0x%2.2X\n", dev->name, cmd, ret);
409 /* Further processing could be done here */
410 break;
411 }
412 }
413
414 static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags,
415 void *inbuf, short inlen, void *outbuf, short *outlen)
416 {
417 static struct _frad_stat status;
418 struct frad_local *flp;
419 struct sdla_cmd *cmd_buf;
420 unsigned long pflags;
421 int jiffs, ret, waiting, len;
422 long window;
423
424 flp = dev->priv;
425 window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
426 cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
427 ret = 0;
428 len = 0;
429 jiffs = jiffies + HZ; /* 1 second is plenty */
430 save_flags(pflags);
431 cli();
432 SDLA_WINDOW(dev, window);
433 cmd_buf->cmd = cmd;
434 cmd_buf->dlci = dlci;
435 cmd_buf->flags = flags;
436
437 if (inbuf)
438 memcpy(cmd_buf->data, inbuf, inlen);
439
440 cmd_buf->length = inlen;
441
442 cmd_buf->opp_flag = 1;
443 restore_flags(pflags);
444
445 waiting = 1;
446 len = 0;
447 while (waiting && time_before_eq(jiffies, jiffs))
448 {
449 if (waiting++ % 3)
450 {
451 save_flags(pflags);
452 cli();
453 SDLA_WINDOW(dev, window);
454 waiting = ((volatile int)(cmd_buf->opp_flag));
455 restore_flags(pflags);
456 }
457 }
458
459 if (!waiting)
460 {
461 save_flags(pflags);
462 cli();
463 SDLA_WINDOW(dev, window);
464 ret = cmd_buf->retval;
465 len = cmd_buf->length;
466 if (outbuf && outlen)
467 {
468 *outlen = *outlen >= len ? len : *outlen;
469
470 if (*outlen)
471 memcpy(outbuf, cmd_buf->data, *outlen);
472 }
473
474 /* This is a local copy that's used for error handling */
475 if (ret)
476 memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
477
478 restore_flags(pflags);
479 }
480 else
481 ret = SDLA_RET_TIMEOUT;
482
483 if (ret != SDLA_RET_OK)
484 sdla_errors(dev, cmd, dlci, ret, len, &status);
485
486 return(ret);
487 }
488
489 /***********************************************
490 *
491 * these functions are called by the DLCI driver
492 *
493 ***********************************************/
494
495 static int sdla_reconfig(struct net_device *dev);
496
497 int sdla_activate(struct net_device *slave, struct net_device *master)
498 {
499 struct frad_local *flp;
500 int i;
501
502 flp = slave->priv;
503
504 for(i=0;i<CONFIG_DLCI_MAX;i++)
505 if (flp->master[i] == master)
506 break;
507
508 if (i == CONFIG_DLCI_MAX)
509 return(-ENODEV);
510
511 flp->dlci[i] = abs(flp->dlci[i]);
512
513 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
514 sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
515
516 return(0);
517 }
518
519 int sdla_deactivate(struct net_device *slave, struct net_device *master)
520 {
521 struct frad_local *flp;
522 int i;
523
524 flp = slave->priv;
525
526 for(i=0;i<CONFIG_DLCI_MAX;i++)
527 if (flp->master[i] == master)
528 break;
529
530 if (i == CONFIG_DLCI_MAX)
531 return(-ENODEV);
532
533 flp->dlci[i] = -abs(flp->dlci[i]);
534
535 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
536 sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
537
538 return(0);
539 }
540
541 int sdla_assoc(struct net_device *slave, struct net_device *master)
542 {
543 struct frad_local *flp;
544 int i;
545
546 if (master->type != ARPHRD_DLCI)
547 return(-EINVAL);
548
549 flp = slave->priv;
550
551 for(i=0;i<CONFIG_DLCI_MAX;i++)
552 {
553 if (!flp->master[i])
554 break;
555 if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
556 return(-EADDRINUSE);
557 }
558
559 if (i == CONFIG_DLCI_MAX)
560 return(-EMLINK); /* #### Alan: Comments on this ?? */
561
562 MOD_INC_USE_COUNT;
563
564 flp->master[i] = master;
565 flp->dlci[i] = -*(short *)(master->dev_addr);
566 master->mtu = slave->mtu;
567
568 if (netif_running(slave)) {
569 if (flp->config.station == FRAD_STATION_CPE)
570 sdla_reconfig(slave);
571 else
572 sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
573 }
574
575 return(0);
576 }
577
578 int sdla_deassoc(struct net_device *slave, struct net_device *master)
579 {
580 struct frad_local *flp;
581 int i;
582
583 flp = slave->priv;
584
585 for(i=0;i<CONFIG_DLCI_MAX;i++)
586 if (flp->master[i] == master)
587 break;
588
589 if (i == CONFIG_DLCI_MAX)
590 return(-ENODEV);
591
592 flp->master[i] = NULL;
593 flp->dlci[i] = 0;
594
595 MOD_DEC_USE_COUNT;
596
597 if (netif_running(slave)) {
598 if (flp->config.station == FRAD_STATION_CPE)
599 sdla_reconfig(slave);
600 else
601 sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
602 }
603
604 return(0);
605 }
606
607 int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
608 {
609 struct frad_local *flp;
610 struct dlci_local *dlp;
611 int i;
612 short len, ret;
613
614 flp = slave->priv;
615
616 for(i=0;i<CONFIG_DLCI_MAX;i++)
617 if (flp->master[i] == master)
618 break;
619
620 if (i == CONFIG_DLCI_MAX)
621 return(-ENODEV);
622
623 dlp = master->priv;
624
625 ret = SDLA_RET_OK;
626 len = sizeof(struct dlci_conf);
627 if (netif_running(slave)) {
628 if (get)
629 ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
630 NULL, 0, &dlp->config, &len);
631 else
632 ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
633 &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
634 }
635
636 return(ret == SDLA_RET_OK ? 0 : -EIO);
637 }
638
639 /**************************
640 *
641 * now for the Linux driver
642 *
643 **************************/
644
645 /* NOTE: the DLCI driver deals with freeing the SKB!! */
646 static int sdla_transmit(struct sk_buff *skb, struct net_device *dev)
647 {
648 struct frad_local *flp;
649 int ret, addr, accept, i;
650 short size;
651 unsigned long flags;
652 struct buf_entry *pbuf;
653
654 flp = dev->priv;
655 ret = 0;
656 accept = 1;
657
658 netif_stop_queue(dev);
659
660 /*
661 * stupid GateD insists on setting up the multicast router thru us
662 * and we're ill equipped to handle a non Frame Relay packet at this
663 * time!
664 */
665
666 accept = 1;
667 switch (dev->type)
668 {
669 case ARPHRD_FRAD:
670 if (skb->dev->type != ARPHRD_DLCI)
671 {
672 printk(KERN_WARNING "%s: Non DLCI device, type %i, tried to send on FRAD module.\n", dev->name, skb->dev->type);
673 accept = 0;
674 }
675 break;
676 default:
677 printk(KERN_WARNING "%s: unknown firmware type 0x%4.4X\n", dev->name, dev->type);
678 accept = 0;
679 break;
680 }
681 if (accept)
682 {
683 /* this is frame specific, but till there's a PPP module, it's the default */
684 switch (flp->type)
685 {
686 case SDLA_S502A:
687 case SDLA_S502E:
688 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
689 break;
690 case SDLA_S508:
691 size = sizeof(addr);
692 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
693 if (ret == SDLA_RET_OK)
694 {
695 save_flags(flags);
696 cli();
697 SDLA_WINDOW(dev, addr);
698 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
699 sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
700 SDLA_WINDOW(dev, addr);
701 pbuf->opp_flag = 1;
702 restore_flags(flags);
703 }
704 break;
705 }
706 switch (ret)
707 {
708 case SDLA_RET_OK:
709 flp->stats.tx_packets++;
710 ret = DLCI_RET_OK;
711 break;
712
713 case SDLA_RET_CIR_OVERFLOW:
714 case SDLA_RET_BUF_OVERSIZE:
715 case SDLA_RET_NO_BUFS:
716 flp->stats.tx_dropped++;
717 ret = DLCI_RET_DROP;
718 break;
719
720 default:
721 flp->stats.tx_errors++;
722 ret = DLCI_RET_ERR;
723 break;
724 }
725 }
726 netif_wake_queue(dev);
727 for(i=0;i<CONFIG_DLCI_MAX;i++)
728 {
729 if(flp->master[i]!=NULL)
730 netif_wake_queue(flp->master[i]);
731 }
732 return(ret);
733 }
734
735 static void sdla_receive(struct net_device *dev)
736 {
737 struct net_device *master;
738 struct frad_local *flp;
739 struct dlci_local *dlp;
740 struct sk_buff *skb;
741
742 struct sdla_cmd *cmd;
743 struct buf_info *pbufi;
744 struct buf_entry *pbuf;
745
746 unsigned long flags;
747 int i=0, received, success, addr, buf_base, buf_top;
748 short dlci, len, len2, split;
749
750 flp = dev->priv;
751 success = 1;
752 received = addr = buf_top = buf_base = 0;
753 len = dlci = 0;
754 skb = NULL;
755 master = NULL;
756 cmd = NULL;
757 pbufi = NULL;
758 pbuf = NULL;
759
760 save_flags(flags);
761 cli();
762
763 switch (flp->type)
764 {
765 case SDLA_S502A:
766 case SDLA_S502E:
767 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
768 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
769 success = cmd->opp_flag;
770 if (!success)
771 break;
772
773 dlci = cmd->dlci;
774 len = cmd->length;
775 break;
776
777 case SDLA_S508:
778 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
779 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
780 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
781 success = pbuf->opp_flag;
782 if (!success)
783 break;
784
785 buf_top = pbufi->buf_top;
786 buf_base = pbufi->buf_base;
787 dlci = pbuf->dlci;
788 len = pbuf->length;
789 addr = pbuf->buf_addr;
790 break;
791 }
792
793 /* common code, find the DLCI and get the SKB */
794 if (success)
795 {
796 for (i=0;i<CONFIG_DLCI_MAX;i++)
797 if (flp->dlci[i] == dlci)
798 break;
799
800 if (i == CONFIG_DLCI_MAX)
801 {
802 printk(KERN_NOTICE "%s: Received packet from invalid DLCI %i, ignoring.", dev->name, dlci);
803 flp->stats.rx_errors++;
804 success = 0;
805 }
806 }
807
808 if (success)
809 {
810 master = flp->master[i];
811 skb = dev_alloc_skb(len + sizeof(struct frhdr));
812 if (skb == NULL)
813 {
814 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
815 flp->stats.rx_dropped++;
816 success = 0;
817 }
818 else
819 skb_reserve(skb, sizeof(struct frhdr));
820 }
821
822 /* pick up the data */
823 switch (flp->type)
824 {
825 case SDLA_S502A:
826 case SDLA_S502E:
827 if (success)
828 sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
829
830 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
831 cmd->opp_flag = 0;
832 break;
833
834 case SDLA_S508:
835 if (success)
836 {
837 /* is this buffer split off the end of the internal ring buffer */
838 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
839 len2 = len - split;
840
841 sdla_read(dev, addr, skb_put(skb, len2), len2);
842 if (split)
843 sdla_read(dev, buf_base, skb_put(skb, split), split);
844 }
845
846 /* increment the buffer we're looking at */
847 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
848 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
849 pbuf->opp_flag = 0;
850 break;
851 }
852
853 if (success)
854 {
855 flp->stats.rx_packets++;
856 dlp = master->priv;
857 (*dlp->receive)(skb, master);
858 }
859
860 restore_flags(flags);
861 }
862
863 static void sdla_isr(int irq, void *dev_id, struct pt_regs * regs)
864 {
865 struct net_device *dev;
866 struct frad_local *flp;
867 char byte;
868
869 dev = dev_id;
870
871 if (dev == NULL)
872 {
873 printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
874 return;
875 }
876
877 flp = dev->priv;
878
879 if (!flp->initialized)
880 {
881 printk(KERN_WARNING "%s: irq %d for uninitialized device.\n", dev->name, irq);
882 return;
883 }
884
885 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
886 switch (byte)
887 {
888 case SDLA_INTR_RX:
889 sdla_receive(dev);
890 break;
891
892 /* the command will get an error return, which is processed above */
893 case SDLA_INTR_MODEM:
894 case SDLA_INTR_STATUS:
895 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
896 break;
897
898 case SDLA_INTR_TX:
899 case SDLA_INTR_COMPLETE:
900 case SDLA_INTR_TIMER:
901 printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, byte);
902 break;
903 }
904
905 /* the S502E requires a manual acknowledgement of the interrupt */
906 if (flp->type == SDLA_S502E)
907 {
908 flp->state &= ~SDLA_S502E_INTACK;
909 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
910 flp->state |= SDLA_S502E_INTACK;
911 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
912 }
913
914 /* this clears the byte, informing the Z80 we're done */
915 byte = 0;
916 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
917 }
918
919 static void sdla_poll(unsigned long device)
920 {
921 struct net_device *dev;
922 struct frad_local *flp;
923
924 dev = (struct net_device *) device;
925 flp = dev->priv;
926
927 if (sdla_byte(dev, SDLA_502_RCV_BUF))
928 sdla_receive(dev);
929
930 flp->timer.expires = 1;
931 add_timer(&flp->timer);
932 }
933
934 static int sdla_close(struct net_device *dev)
935 {
936 struct frad_local *flp;
937 struct intr_info intr;
938 int len, i;
939 short dlcis[CONFIG_DLCI_MAX];
940
941 flp = dev->priv;
942
943 len = 0;
944 for(i=0;i<CONFIG_DLCI_MAX;i++)
945 if (flp->dlci[i])
946 dlcis[len++] = abs(flp->dlci[i]);
947 len *= 2;
948
949 if (flp->config.station == FRAD_STATION_NODE)
950 {
951 for(i=0;i<CONFIG_DLCI_MAX;i++)
952 if (flp->dlci[i] > 0)
953 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
954 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
955 }
956
957 memset(&intr, 0, sizeof(intr));
958 /* let's start up the reception */
959 switch(flp->type)
960 {
961 case SDLA_S502A:
962 del_timer(&flp->timer);
963 break;
964
965 case SDLA_S502E:
966 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
967 flp->state &= ~SDLA_S502E_INTACK;
968 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
969 break;
970
971 case SDLA_S507:
972 break;
973
974 case SDLA_S508:
975 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
976 flp->state &= ~SDLA_S508_INTEN;
977 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
978 break;
979 }
980
981 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
982
983 netif_stop_queue(dev);
984
985 MOD_DEC_USE_COUNT;
986
987 return(0);
988 }
989
990 struct conf_data {
991 struct frad_conf config;
992 short dlci[CONFIG_DLCI_MAX];
993 };
994
995 static int sdla_open(struct net_device *dev)
996 {
997 struct frad_local *flp;
998 struct dlci_local *dlp;
999 struct conf_data data;
1000 struct intr_info intr;
1001 int len, i;
1002 char byte;
1003
1004 flp = dev->priv;
1005
1006 if (!flp->initialized)
1007 return(-EPERM);
1008
1009 if (!flp->configured)
1010 return(-EPERM);
1011
1012 /* time to send in the configuration */
1013 len = 0;
1014 for(i=0;i<CONFIG_DLCI_MAX;i++)
1015 if (flp->dlci[i])
1016 data.dlci[len++] = abs(flp->dlci[i]);
1017 len *= 2;
1018
1019 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1020 len += sizeof(struct frad_conf);
1021
1022 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1023 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1024
1025 if (flp->type == SDLA_S508)
1026 flp->buffer = 0;
1027
1028 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1029
1030 /* let's start up the reception */
1031 memset(&intr, 0, sizeof(intr));
1032 switch(flp->type)
1033 {
1034 case SDLA_S502A:
1035 flp->timer.expires = 1;
1036 add_timer(&flp->timer);
1037 break;
1038
1039 case SDLA_S502E:
1040 flp->state |= SDLA_S502E_ENABLE;
1041 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1042 flp->state |= SDLA_S502E_INTACK;
1043 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1044 byte = 0;
1045 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1046 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1047 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1048 break;
1049
1050 case SDLA_S507:
1051 break;
1052
1053 case SDLA_S508:
1054 flp->state |= SDLA_S508_INTEN;
1055 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1056 byte = 0;
1057 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1058 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1059 intr.irq = dev->irq;
1060 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1061 break;
1062 }
1063
1064 if (flp->config.station == FRAD_STATION_CPE)
1065 {
1066 byte = SDLA_ICS_STATUS_ENQ;
1067 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1068 }
1069 else
1070 {
1071 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1072 for(i=0;i<CONFIG_DLCI_MAX;i++)
1073 if (flp->dlci[i] > 0)
1074 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1075 }
1076
1077 /* configure any specific DLCI settings */
1078 for(i=0;i<CONFIG_DLCI_MAX;i++)
1079 if (flp->dlci[i])
1080 {
1081 dlp = flp->master[i]->priv;
1082 if (dlp->configured)
1083 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1084 }
1085
1086 netif_start_queue(dev);
1087
1088 MOD_INC_USE_COUNT;
1089
1090 return(0);
1091 }
1092
1093 static int sdla_config(struct net_device *dev, struct frad_conf *conf, int get)
1094 {
1095 struct frad_local *flp;
1096 struct conf_data data;
1097 int i;
1098 short size;
1099
1100 if (dev->type == 0xFFFF)
1101 return(-EUNATCH);
1102
1103 flp = dev->priv;
1104
1105 if (!get)
1106 {
1107 if (netif_running(dev))
1108 return(-EBUSY);
1109
1110 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1111 return -EFAULT;
1112
1113 if (data.config.station & ~FRAD_STATION_NODE)
1114 return(-EINVAL);
1115
1116 if (data.config.flags & ~FRAD_VALID_FLAGS)
1117 return(-EINVAL);
1118
1119 if ((data.config.kbaud < 0) ||
1120 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1121 return(-EINVAL);
1122
1123 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1124 return(-EINVAL);
1125
1126 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1127 return(-EINVAL);
1128
1129 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1130 return(-EINVAL);
1131
1132 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1133 return(-EINVAL);
1134
1135 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1136 return(-EINVAL);
1137
1138 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1139 return(-EINVAL);
1140
1141 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1142 return(-EINVAL);
1143
1144 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1145 flp->config.flags |= SDLA_DIRECT_RECV;
1146
1147 if (flp->type == SDLA_S508)
1148 flp->config.flags |= SDLA_TX70_RX30;
1149
1150 if (dev->mtu != flp->config.mtu)
1151 {
1152 /* this is required to change the MTU */
1153 dev->mtu = flp->config.mtu;
1154 for(i=0;i<CONFIG_DLCI_MAX;i++)
1155 if (flp->master[i])
1156 flp->master[i]->mtu = flp->config.mtu;
1157 }
1158
1159 flp->config.mtu += sizeof(struct frhdr);
1160
1161 /* off to the races! */
1162 if (!flp->configured)
1163 sdla_start(dev);
1164
1165 flp->configured = 1;
1166 }
1167 else
1168 {
1169 /* no sense reading if the CPU isn't started */
1170 if (netif_running(dev))
1171 {
1172 size = sizeof(data);
1173 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1174 return(-EIO);
1175 }
1176 else
1177 if (flp->configured)
1178 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1179 else
1180 memset(&data.config, 0, sizeof(struct frad_conf));
1181
1182 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1183 data.config.flags &= FRAD_VALID_FLAGS;
1184 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1185 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1186 }
1187
1188 return(0);
1189 }
1190
1191 static int sdla_xfer(struct net_device *dev, struct sdla_mem *info, int read)
1192 {
1193 struct sdla_mem mem;
1194 char *temp;
1195
1196 if(copy_from_user(&mem, info, sizeof(mem)))
1197 return -EFAULT;
1198
1199 if (read)
1200 {
1201 temp = kmalloc(mem.len, GFP_KERNEL);
1202 if (!temp)
1203 return(-ENOMEM);
1204 sdla_read(dev, mem.addr, temp, mem.len);
1205 if(copy_to_user(mem.data, temp, mem.len))
1206 {
1207 kfree(temp);
1208 return -EFAULT;
1209 }
1210 kfree(temp);
1211 }
1212 else
1213 {
1214 temp = kmalloc(mem.len, GFP_KERNEL);
1215 if (!temp)
1216 return(-ENOMEM);
1217 if(copy_from_user(temp, mem.data, mem.len))
1218 {
1219 kfree(temp);
1220 return -EFAULT;
1221 }
1222 sdla_write(dev, mem.addr, temp, mem.len);
1223 kfree(temp);
1224 }
1225 return(0);
1226 }
1227
1228 static int sdla_reconfig(struct net_device *dev)
1229 {
1230 struct frad_local *flp;
1231 struct conf_data data;
1232 int i, len;
1233
1234 flp = dev->priv;
1235
1236 len = 0;
1237 for(i=0;i<CONFIG_DLCI_MAX;i++)
1238 if (flp->dlci[i])
1239 data.dlci[len++] = flp->dlci[i];
1240 len *= 2;
1241
1242 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1243 len += sizeof(struct frad_conf);
1244
1245 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1246 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1247 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1248
1249 return(0);
1250 }
1251
1252 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1253 {
1254 struct frad_local *flp;
1255
1256 if(!capable(CAP_NET_ADMIN))
1257 return -EPERM;
1258
1259 flp = dev->priv;
1260
1261 if (!flp->initialized)
1262 return(-EINVAL);
1263
1264 switch (cmd)
1265 {
1266 case FRAD_GET_CONF:
1267 case FRAD_SET_CONF:
1268 return(sdla_config(dev, (struct frad_conf *)ifr->ifr_data, cmd == FRAD_GET_CONF));
1269
1270 case SDLA_IDENTIFY:
1271 ifr->ifr_flags = flp->type;
1272 break;
1273
1274 case SDLA_CPUSPEED:
1275 return(sdla_cpuspeed(dev, ifr));
1276
1277 /* ==========================================================
1278 NOTE: This is rather a useless action right now, as the
1279 current driver does not support protocols other than
1280 FR. However, Sangoma has modules for a number of
1281 other protocols in the works.
1282 ============================================================*/
1283 case SDLA_PROTOCOL:
1284 if (flp->configured)
1285 return(-EALREADY);
1286
1287 switch (ifr->ifr_flags)
1288 {
1289 case ARPHRD_FRAD:
1290 dev->type = ifr->ifr_flags;
1291 break;
1292 default:
1293 return(-ENOPROTOOPT);
1294 }
1295 break;
1296
1297 case SDLA_CLEARMEM:
1298 sdla_clear(dev);
1299 break;
1300
1301 case SDLA_WRITEMEM:
1302 case SDLA_READMEM:
1303 return(sdla_xfer(dev, (struct sdla_mem *)ifr->ifr_data, cmd == SDLA_READMEM));
1304
1305 case SDLA_START:
1306 sdla_start(dev);
1307 break;
1308
1309 case SDLA_STOP:
1310 sdla_stop(dev);
1311 break;
1312
1313 default:
1314 return(-EOPNOTSUPP);
1315 }
1316 return(0);
1317 }
1318
1319 int sdla_change_mtu(struct net_device *dev, int new_mtu)
1320 {
1321 struct frad_local *flp;
1322
1323 flp = dev->priv;
1324
1325 if (netif_running(dev))
1326 return(-EBUSY);
1327
1328 /* for now, you can't change the MTU! */
1329 return(-EOPNOTSUPP);
1330 }
1331
1332 int sdla_set_config(struct net_device *dev, struct ifmap *map)
1333 {
1334 struct frad_local *flp;
1335 int i;
1336 char byte;
1337
1338 flp = dev->priv;
1339
1340 if (flp->initialized)
1341 return(-EINVAL);
1342
1343 for(i=0;i < sizeof(valid_port) / sizeof (int) ; i++)
1344 if (valid_port[i] == map->base_addr)
1345 break;
1346
1347 if (i == sizeof(valid_port) / sizeof(int))
1348 return(-EINVAL);
1349
1350 dev->base_addr = map->base_addr;
1351 request_region(dev->base_addr, SDLA_IO_EXTENTS, dev->name);
1352
1353 /* test for card types, S502A, S502E, S507, S508 */
1354 /* these tests shut down the card completely, so clear the state */
1355 flp->type = SDLA_UNKNOWN;
1356 flp->state = 0;
1357
1358 for(i=1;i<SDLA_IO_EXTENTS;i++)
1359 if (inb(dev->base_addr + i) != 0xFF)
1360 break;
1361
1362 if (i == SDLA_IO_EXTENTS)
1363 {
1364 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
1365 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x0F) == 0x08)
1366 {
1367 outb(SDLA_S502E_INTACK, dev->base_addr + SDLA_REG_CONTROL);
1368 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x0F) == 0x0C)
1369 {
1370 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1371 flp->type = SDLA_S502E;
1372 }
1373 }
1374 }
1375
1376 if (flp->type == SDLA_UNKNOWN)
1377 {
1378 for(byte=inb(dev->base_addr),i=0;i<SDLA_IO_EXTENTS;i++)
1379 if (inb(dev->base_addr + i) != byte)
1380 break;
1381
1382 if (i == SDLA_IO_EXTENTS)
1383 {
1384 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1385 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x7E) == 0x30)
1386 {
1387 outb(SDLA_S507_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
1388 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x7E) == 0x32)
1389 {
1390 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1391 flp->type = SDLA_S507;
1392 }
1393 }
1394 }
1395 }
1396
1397 if (flp->type == SDLA_UNKNOWN)
1398 {
1399 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1400 if ((inb(dev->base_addr + SDLA_S508_STS) & 0x3F) == 0x00)
1401 {
1402 outb(SDLA_S508_INTEN, dev->base_addr + SDLA_REG_CONTROL);
1403 if ((inb(dev->base_addr + SDLA_S508_STS) & 0x3F) == 0x10)
1404 {
1405 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1406 flp->type = SDLA_S508;
1407 }
1408 }
1409 }
1410
1411 if (flp->type == SDLA_UNKNOWN)
1412 {
1413 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
1414 if (inb(dev->base_addr + SDLA_S502_STS) == 0x40)
1415 {
1416 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
1417 if (inb(dev->base_addr + SDLA_S502_STS) == 0x40)
1418 {
1419 outb(SDLA_S502A_INTEN, dev->base_addr + SDLA_REG_CONTROL);
1420 if (inb(dev->base_addr + SDLA_S502_STS) == 0x44)
1421 {
1422 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
1423 flp->type = SDLA_S502A;
1424 }
1425 }
1426 }
1427 }
1428
1429 if (flp->type == SDLA_UNKNOWN)
1430 {
1431 printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
1432 return(-ENODEV);
1433 }
1434
1435 switch(dev->base_addr)
1436 {
1437 case 0x270:
1438 case 0x280:
1439 case 0x380:
1440 case 0x390:
1441 if ((flp->type != SDLA_S508) && (flp->type != SDLA_S507))
1442 return(-EINVAL);
1443 }
1444
1445 switch (map->irq)
1446 {
1447 case 2:
1448 if (flp->type != SDLA_S502E)
1449 return(-EINVAL);
1450 break;
1451
1452 case 10:
1453 case 11:
1454 case 12:
1455 case 15:
1456 case 4:
1457 if ((flp->type != SDLA_S508) && (flp->type != SDLA_S507))
1458 return(-EINVAL);
1459
1460 case 3:
1461 case 5:
1462 case 7:
1463 if (flp->type == SDLA_S502A)
1464 return(-EINVAL);
1465 break;
1466
1467 default:
1468 return(-EINVAL);
1469 }
1470 dev->irq = map->irq;
1471
1472 if (request_irq(dev->irq, &sdla_isr, 0, dev->name, dev))
1473 return(-EAGAIN);
1474
1475 if (flp->type == SDLA_S507)
1476 {
1477 switch(dev->irq)
1478 {
1479 case 3:
1480 flp->state = SDLA_S507_IRQ3;
1481 break;
1482 case 4:
1483 flp->state = SDLA_S507_IRQ4;
1484 break;
1485 case 5:
1486 flp->state = SDLA_S507_IRQ5;
1487 break;
1488 case 7:
1489 flp->state = SDLA_S507_IRQ7;
1490 break;
1491 case 10:
1492 flp->state = SDLA_S507_IRQ10;
1493 break;
1494 case 11:
1495 flp->state = SDLA_S507_IRQ11;
1496 break;
1497 case 12:
1498 flp->state = SDLA_S507_IRQ12;
1499 break;
1500 case 15:
1501 flp->state = SDLA_S507_IRQ15;
1502 break;
1503 }
1504 }
1505
1506 for(i=0;i < sizeof(valid_mem) / sizeof (int) ; i++)
1507 if (valid_mem[i] == map->mem_start)
1508 break;
1509
1510 if (i == sizeof(valid_mem) / sizeof(int))
1511 /*
1512 * FIXME:
1513 * BUG BUG BUG: MUST RELEASE THE IRQ WE ALLOCATED IN
1514 * ALL THESE CASES
1515 *
1516 */
1517 return(-EINVAL);
1518
1519 if ((flp->type == SDLA_S502A) && (((map->mem_start & 0xF000) >> 12) == 0x0E))
1520 return(-EINVAL);
1521
1522 if ((flp->type != SDLA_S507) && ((map->mem_start >> 16) == 0x0B))
1523 return(-EINVAL);
1524
1525 if ((flp->type == SDLA_S507) && ((map->mem_start >> 16) == 0x0D))
1526 return(-EINVAL);
1527
1528 dev->mem_start = map->mem_start;
1529 dev->mem_end = dev->mem_start + 0x2000;
1530
1531 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1532 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1533 switch(flp->type)
1534 {
1535 case SDLA_S502A:
1536 case SDLA_S502E:
1537 switch (map->mem_start >> 16)
1538 {
1539 case 0x0A:
1540 byte |= SDLA_S502_SEG_A;
1541 break;
1542 case 0x0C:
1543 byte |= SDLA_S502_SEG_C;
1544 break;
1545 case 0x0D:
1546 byte |= SDLA_S502_SEG_D;
1547 break;
1548 case 0x0E:
1549 byte |= SDLA_S502_SEG_E;
1550 break;
1551 }
1552 break;
1553 case SDLA_S507:
1554 switch (map->mem_start >> 16)
1555 {
1556 case 0x0A:
1557 byte |= SDLA_S507_SEG_A;
1558 break;
1559 case 0x0B:
1560 byte |= SDLA_S507_SEG_B;
1561 break;
1562 case 0x0C:
1563 byte |= SDLA_S507_SEG_C;
1564 break;
1565 case 0x0E:
1566 byte |= SDLA_S507_SEG_E;
1567 break;
1568 }
1569 break;
1570 case SDLA_S508:
1571 switch (map->mem_start >> 16)
1572 {
1573 case 0x0A:
1574 byte |= SDLA_S508_SEG_A;
1575 break;
1576 case 0x0C:
1577 byte |= SDLA_S508_SEG_C;
1578 break;
1579 case 0x0D:
1580 byte |= SDLA_S508_SEG_D;
1581 break;
1582 case 0x0E:
1583 byte |= SDLA_S508_SEG_E;
1584 break;
1585 }
1586 break;
1587 }
1588
1589 /* set the memory bits, and enable access */
1590 outb(byte, dev->base_addr + SDLA_REG_PC_WINDOW);
1591
1592 switch(flp->type)
1593 {
1594 case SDLA_S502E:
1595 flp->state = SDLA_S502E_ENABLE;
1596 break;
1597 case SDLA_S507:
1598 flp->state |= SDLA_MEMEN;
1599 break;
1600 case SDLA_S508:
1601 flp->state = SDLA_MEMEN;
1602 break;
1603 }
1604 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1605
1606 flp->initialized = 1;
1607 return(0);
1608 }
1609
1610 static struct net_device_stats *sdla_stats(struct net_device *dev)
1611 {
1612 struct frad_local *flp;
1613 flp = dev->priv;
1614
1615 return(&flp->stats);
1616 }
1617
1618 int __init sdla_init(struct net_device *dev)
1619 {
1620 struct frad_local *flp;
1621
1622 /* allocate the private data structure */
1623 flp = kmalloc(sizeof(struct frad_local), GFP_KERNEL);
1624 if (!flp)
1625 return(-ENOMEM);
1626
1627 memset(flp, 0, sizeof(struct frad_local));
1628 dev->priv = flp;
1629
1630 dev->flags = 0;
1631 dev->open = sdla_open;
1632 dev->stop = sdla_close;
1633 dev->do_ioctl = sdla_ioctl;
1634 dev->set_config = sdla_set_config;
1635 dev->get_stats = sdla_stats;
1636 dev->hard_start_xmit = sdla_transmit;
1637 dev->change_mtu = sdla_change_mtu;
1638
1639 dev->type = 0xFFFF;
1640 dev->hard_header_len = 0;
1641 dev->addr_len = 0;
1642 dev->mtu = SDLA_MAX_MTU;
1643
1644 flp->activate = sdla_activate;
1645 flp->deactivate = sdla_deactivate;
1646 flp->assoc = sdla_assoc;
1647 flp->deassoc = sdla_deassoc;
1648 flp->dlci_conf = sdla_dlci_conf;
1649
1650 init_timer(&flp->timer);
1651 flp->timer.expires = 1;
1652 flp->timer.data = (unsigned long) dev;
1653 flp->timer.function = sdla_poll;
1654
1655 return(0);
1656 }
1657
1658 int __init sdla_c_setup(void)
1659 {
1660 printk("%s.\n", version);
1661 register_frad(devname);
1662 return 0;
1663 }
1664
1665 #ifdef MODULE
1666 static struct net_device sdla0 = {"sdla0", 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, sdla_init};
1667
1668 MODULE_LICENSE("GPL");
1669
1670 int init_module(void)
1671 {
1672 int result;
1673
1674 sdla_c_setup();
1675 if ((result = register_netdev(&sdla0)) != 0)
1676 return result;
1677 return 0;
1678 }
1679
1680 void cleanup_module(void)
1681 {
1682 unregister_netdev(&sdla0);
1683 if (sdla0.priv)
1684 kfree(sdla0.priv);
1685 if (sdla0.irq)
1686 free_irq(sdla0.irq, &sdla0);
1687 }
1688 #endif /* MODULE */
1689