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Import 2.3.41pre2
[davej-history.git] / drivers / net / wan / sdla.c
blob29bedf8f9635caff919f671ffefe7bf083a1535a
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/malloc.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 (slave->start && (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 (slave->start && (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 (slave->start) {
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 (slave->start) {
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 (slave->start) {
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;
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 if (dev->tbusy)
659 return(1);
660
661 if (skb == NULL)
662 return(0);
663
664 if (test_and_set_bit(0, (void*)&dev->tbusy) != 0)
665 printk(KERN_WARNING "%s: transmitter access conflict.\n", dev->name);
666 else
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
685 default:
686 printk(KERN_WARNING "%s: unknown firmware type 0x%4.4X\n", dev->name, dev->type);
687 accept = 0;
688 break;
689 }
690
691 if (accept)
692 {
693 /* this is frame specific, but till there's a PPP module, it's the default */
694 switch (flp->type)
695 {
696 case SDLA_S502A:
697 case SDLA_S502E:
698 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
699 break;
700
701 case SDLA_S508:
702 size = sizeof(addr);
703 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
704 if (ret == SDLA_RET_OK)
705 {
706 save_flags(flags);
707 cli();
708 SDLA_WINDOW(dev, addr);
709 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
710
711 sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
712
713 SDLA_WINDOW(dev, addr);
714 pbuf->opp_flag = 1;
715 restore_flags(flags);
716 }
717 break;
718 }
719
720 switch (ret)
721 {
722 case SDLA_RET_OK:
723 flp->stats.tx_packets++;
724 ret = DLCI_RET_OK;
725 break;
726
727 case SDLA_RET_CIR_OVERFLOW:
728 case SDLA_RET_BUF_OVERSIZE:
729 case SDLA_RET_NO_BUFS:
730 flp->stats.tx_dropped++;
731 ret = DLCI_RET_DROP;
732 break;
733
734 default:
735 flp->stats.tx_errors++;
736 ret = DLCI_RET_ERR;
737 break;
738 }
739 }
740 dev->tbusy = 0;
741 }
742 return(ret);
743 }
744
745 static void sdla_receive(struct net_device *dev)
746 {
747 struct net_device *master;
748 struct frad_local *flp;
749 struct dlci_local *dlp;
750 struct sk_buff *skb;
751
752 struct sdla_cmd *cmd;
753 struct buf_info *pbufi;
754 struct buf_entry *pbuf;
755
756 unsigned long flags;
757 int i, received, success, addr, buf_base, buf_top;
758 short dlci, len, len2, split;
759
760 flp = dev->priv;
761 success = 1;
762 received = addr = buf_top = buf_base = 0;
763 len = dlci = 0;
764 skb = NULL;
765 master = NULL;
766 cmd = NULL;
767 pbufi = NULL;
768 pbuf = NULL;
769
770 save_flags(flags);
771 cli();
772
773 switch (flp->type)
774 {
775 case SDLA_S502A:
776 case SDLA_S502E:
777 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
778 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
779 success = cmd->opp_flag;
780 if (!success)
781 break;
782
783 dlci = cmd->dlci;
784 len = cmd->length;
785 break;
786
787 case SDLA_S508:
788 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
789 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
790 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
791 success = pbuf->opp_flag;
792 if (!success)
793 break;
794
795 buf_top = pbufi->buf_top;
796 buf_base = pbufi->buf_base;
797 dlci = pbuf->dlci;
798 len = pbuf->length;
799 addr = pbuf->buf_addr;
800 break;
801 }
802
803 /* common code, find the DLCI and get the SKB */
804 if (success)
805 {
806 for (i=0;i<CONFIG_DLCI_MAX;i++)
807 if (flp->dlci[i] == dlci)
808 break;
809
810 if (i == CONFIG_DLCI_MAX)
811 {
812 printk(KERN_NOTICE "%s: Received packet from invalid DLCI %i, ignoring.", dev->name, dlci);
813 flp->stats.rx_errors++;
814 success = 0;
815 }
816 }
817
818 if (success)
819 {
820 master = flp->master[i];
821 skb = dev_alloc_skb(len + sizeof(struct frhdr));
822 if (skb == NULL)
823 {
824 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
825 flp->stats.rx_dropped++;
826 success = 0;
827 }
828 else
829 skb_reserve(skb, sizeof(struct frhdr));
830 }
831
832 /* pick up the data */
833 switch (flp->type)
834 {
835 case SDLA_S502A:
836 case SDLA_S502E:
837 if (success)
838 sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
839
840 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
841 cmd->opp_flag = 0;
842 break;
843
844 case SDLA_S508:
845 if (success)
846 {
847 /* is this buffer split off the end of the internal ring buffer */
848 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
849 len2 = len - split;
850
851 sdla_read(dev, addr, skb_put(skb, len2), len2);
852 if (split)
853 sdla_read(dev, buf_base, skb_put(skb, split), split);
854 }
855
856 /* increment the buffer we're looking at */
857 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
858 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
859 pbuf->opp_flag = 0;
860 break;
861 }
862
863 if (success)
864 {
865 flp->stats.rx_packets++;
866 dlp = master->priv;
867 (*dlp->receive)(skb, master);
868 }
869
870 restore_flags(flags);
871 }
872
873 static void sdla_isr(int irq, void *dev_id, struct pt_regs * regs)
874 {
875 struct net_device *dev;
876 struct frad_local *flp;
877 char byte;
878
879 dev = dev_id;
880
881 if (dev == NULL)
882 {
883 printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
884 return;
885 }
886
887 flp = dev->priv;
888
889 if (!flp->initialized)
890 {
891 printk(KERN_WARNING "%s: irq %d for uninitialized device.\n", dev->name, irq);
892 return;
893 }
894
895 dev->interrupt = 1;
896 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
897 switch (byte)
898 {
899 case SDLA_INTR_RX:
900 sdla_receive(dev);
901 break;
902
903 /* the command will get an error return, which is processed above */
904 case SDLA_INTR_MODEM:
905 case SDLA_INTR_STATUS:
906 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
907 break;
908
909 case SDLA_INTR_TX:
910 case SDLA_INTR_COMPLETE:
911 case SDLA_INTR_TIMER:
912 printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, byte);
913 break;
914 }
915
916 /* the S502E requires a manual acknowledgement of the interrupt */
917 if (flp->type == SDLA_S502E)
918 {
919 flp->state &= ~SDLA_S502E_INTACK;
920 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
921 flp->state |= SDLA_S502E_INTACK;
922 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
923 }
924
925 /* this clears the byte, informing the Z80 we're done */
926 byte = 0;
927 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
928 dev->interrupt = 0;
929 }
930
931 static void sdla_poll(unsigned long device)
932 {
933 struct net_device *dev;
934 struct frad_local *flp;
935
936 dev = (struct net_device *) device;
937 flp = dev->priv;
938
939 if (sdla_byte(dev, SDLA_502_RCV_BUF))
940 sdla_receive(dev);
941
942 flp->timer.expires = 1;
943 add_timer(&flp->timer);
944 }
945
946 static int sdla_close(struct net_device *dev)
947 {
948 struct frad_local *flp;
949 struct intr_info intr;
950 int len, i;
951 short dlcis[CONFIG_DLCI_MAX];
952
953 flp = dev->priv;
954
955 len = 0;
956 for(i=0;i<CONFIG_DLCI_MAX;i++)
957 if (flp->dlci[i])
958 dlcis[len++] = abs(flp->dlci[i]);
959 len *= 2;
960
961 if (flp->config.station == FRAD_STATION_NODE)
962 {
963 for(i=0;i<CONFIG_DLCI_MAX;i++)
964 if (flp->dlci[i] > 0)
965 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
966 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
967 }
968
969 memset(&intr, 0, sizeof(intr));
970 /* let's start up the reception */
971 switch(flp->type)
972 {
973 case SDLA_S502A:
974 del_timer(&flp->timer);
975 break;
976
977 case SDLA_S502E:
978 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
979 flp->state &= ~SDLA_S502E_INTACK;
980 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
981 break;
982
983 case SDLA_S507:
984 break;
985
986 case SDLA_S508:
987 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
988 flp->state &= ~SDLA_S508_INTEN;
989 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
990 break;
991 }
992
993 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
994
995 dev->tbusy = 1;
996 dev->start = 0;
997
998 MOD_DEC_USE_COUNT;
999
1000 return(0);
1001 }
1002
1003 struct conf_data {
1004 struct frad_conf config;
1005 short dlci[CONFIG_DLCI_MAX];
1006 };
1007
1008 static int sdla_open(struct net_device *dev)
1009 {
1010 struct frad_local *flp;
1011 struct dlci_local *dlp;
1012 struct conf_data data;
1013 struct intr_info intr;
1014 int len, i;
1015 char byte;
1016
1017 flp = dev->priv;
1018
1019 if (!flp->initialized)
1020 return(-EPERM);
1021
1022 if (!flp->configured)
1023 return(-EPERM);
1024
1025 /* time to send in the configuration */
1026 len = 0;
1027 for(i=0;i<CONFIG_DLCI_MAX;i++)
1028 if (flp->dlci[i])
1029 data.dlci[len++] = abs(flp->dlci[i]);
1030 len *= 2;
1031
1032 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1033 len += sizeof(struct frad_conf);
1034
1035 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1036 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1037
1038 if (flp->type == SDLA_S508)
1039 flp->buffer = 0;
1040
1041 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1042
1043 /* let's start up the reception */
1044 memset(&intr, 0, sizeof(intr));
1045 switch(flp->type)
1046 {
1047 case SDLA_S502A:
1048 flp->timer.expires = 1;
1049 add_timer(&flp->timer);
1050 break;
1051
1052 case SDLA_S502E:
1053 flp->state |= SDLA_S502E_ENABLE;
1054 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1055 flp->state |= SDLA_S502E_INTACK;
1056 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1057 byte = 0;
1058 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1059 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1060 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1061 break;
1062
1063 case SDLA_S507:
1064 break;
1065
1066 case SDLA_S508:
1067 flp->state |= SDLA_S508_INTEN;
1068 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1069 byte = 0;
1070 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1071 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1072 intr.irq = dev->irq;
1073 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1074 break;
1075 }
1076
1077 if (flp->config.station == FRAD_STATION_CPE)
1078 {
1079 byte = SDLA_ICS_STATUS_ENQ;
1080 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1081 }
1082 else
1083 {
1084 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1085 for(i=0;i<CONFIG_DLCI_MAX;i++)
1086 if (flp->dlci[i] > 0)
1087 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1088 }
1089
1090 /* configure any specific DLCI settings */
1091 for(i=0;i<CONFIG_DLCI_MAX;i++)
1092 if (flp->dlci[i])
1093 {
1094 dlp = flp->master[i]->priv;
1095 if (dlp->configured)
1096 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1097 }
1098
1099 dev->tbusy = 0;
1100 dev->interrupt = 0;
1101 dev->start = 1;
1102
1103 MOD_INC_USE_COUNT;
1104
1105 return(0);
1106 }
1107
1108 static int sdla_config(struct net_device *dev, struct frad_conf *conf, int get)
1109 {
1110 struct frad_local *flp;
1111 struct conf_data data;
1112 int i;
1113 short size;
1114
1115 if (dev->type == 0xFFFF)
1116 return(-EUNATCH);
1117
1118 flp = dev->priv;
1119
1120 if (!get)
1121 {
1122 if (dev->start)
1123 return(-EBUSY);
1124
1125 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1126 return -EFAULT;
1127
1128 if (data.config.station & ~FRAD_STATION_NODE)
1129 return(-EINVAL);
1130
1131 if (data.config.flags & ~FRAD_VALID_FLAGS)
1132 return(-EINVAL);
1133
1134 if ((data.config.kbaud < 0) ||
1135 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1136 return(-EINVAL);
1137
1138 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1139 return(-EINVAL);
1140
1141 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1142 return(-EINVAL);
1143
1144 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1145 return(-EINVAL);
1146
1147 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1148 return(-EINVAL);
1149
1150 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1151 return(-EINVAL);
1152
1153 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1154 return(-EINVAL);
1155
1156 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1157 return(-EINVAL);
1158
1159 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1160 flp->config.flags |= SDLA_DIRECT_RECV;
1161
1162 if (flp->type == SDLA_S508)
1163 flp->config.flags |= SDLA_TX70_RX30;
1164
1165 if (dev->mtu != flp->config.mtu)
1166 {
1167 /* this is required to change the MTU */
1168 dev->mtu = flp->config.mtu;
1169 for(i=0;i<CONFIG_DLCI_MAX;i++)
1170 if (flp->master[i])
1171 flp->master[i]->mtu = flp->config.mtu;
1172 }
1173
1174 flp->config.mtu += sizeof(struct frhdr);
1175
1176 /* off to the races! */
1177 if (!flp->configured)
1178 sdla_start(dev);
1179
1180 flp->configured = 1;
1181 }
1182 else
1183 {
1184 /* no sense reading if the CPU isn't started */
1185 if (dev->start)
1186 {
1187 size = sizeof(data);
1188 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1189 return(-EIO);
1190 }
1191 else
1192 if (flp->configured)
1193 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1194 else
1195 memset(&data.config, 0, sizeof(struct frad_conf));
1196
1197 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1198 data.config.flags &= FRAD_VALID_FLAGS;
1199 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1200 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1201 }
1202
1203 return(0);
1204 }
1205
1206 static int sdla_xfer(struct net_device *dev, struct sdla_mem *info, int read)
1207 {
1208 struct sdla_mem mem;
1209 char *temp;
1210
1211 if(copy_from_user(&mem, info, sizeof(mem)))
1212 return -EFAULT;
1213
1214 if (read)
1215 {
1216 temp = kmalloc(mem.len, GFP_KERNEL);
1217 if (!temp)
1218 return(-ENOMEM);
1219 sdla_read(dev, mem.addr, temp, mem.len);
1220 if(copy_to_user(mem.data, temp, mem.len))
1221 return -EFAULT;
1222 kfree(temp);
1223 }
1224 else
1225 {
1226 temp = kmalloc(mem.len, GFP_KERNEL);
1227 if (!temp)
1228 return(-ENOMEM);
1229 if(copy_from_user(temp, mem.data, mem.len))
1230 return -EFAULT;
1231 sdla_write(dev, mem.addr, temp, mem.len);
1232 kfree(temp);
1233 }
1234 return(0);
1235 }
1236
1237 static int sdla_reconfig(struct net_device *dev)
1238 {
1239 struct frad_local *flp;
1240 struct conf_data data;
1241 int i, len;
1242
1243 flp = dev->priv;
1244
1245 len = 0;
1246 for(i=0;i<CONFIG_DLCI_MAX;i++)
1247 if (flp->dlci[i])
1248 data.dlci[len++] = flp->dlci[i];
1249 len *= 2;
1250
1251 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1252 len += sizeof(struct frad_conf);
1253
1254 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1255 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1256 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1257
1258 return(0);
1259 }
1260
1261 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1262 {
1263 struct frad_local *flp;
1264
1265 if(!suser())
1266 return -EPERM;
1267
1268 flp = dev->priv;
1269
1270 if (!flp->initialized)
1271 return(-EINVAL);
1272
1273 switch (cmd)
1274 {
1275 case FRAD_GET_CONF:
1276 case FRAD_SET_CONF:
1277 return(sdla_config(dev, (struct frad_conf *)ifr->ifr_data, cmd == FRAD_GET_CONF));
1278
1279 case SDLA_IDENTIFY:
1280 ifr->ifr_flags = flp->type;
1281 break;
1282
1283 case SDLA_CPUSPEED:
1284 return(sdla_cpuspeed(dev, ifr));
1285
1286 /* ==========================================================
1287 NOTE: This is rather a useless action right now, as the
1288 current driver does not support protocols other than
1289 FR. However, Sangoma has modules for a number of
1290 other protocols in the works.
1291 ============================================================*/
1292 case SDLA_PROTOCOL:
1293 if (flp->configured)
1294 return(-EALREADY);
1295
1296 switch (ifr->ifr_flags)
1297 {
1298 case ARPHRD_FRAD:
1299 dev->type = ifr->ifr_flags;
1300 break;
1301 default:
1302 return(-ENOPROTOOPT);
1303 }
1304 break;
1305
1306 case SDLA_CLEARMEM:
1307 sdla_clear(dev);
1308 break;
1309
1310 case SDLA_WRITEMEM:
1311 case SDLA_READMEM:
1312 return(sdla_xfer(dev, (struct sdla_mem *)ifr->ifr_data, cmd == SDLA_READMEM));
1313
1314 case SDLA_START:
1315 sdla_start(dev);
1316 break;
1317
1318 case SDLA_STOP:
1319 sdla_stop(dev);
1320 break;
1321
1322 default:
1323 return(-EOPNOTSUPP);
1324 }
1325 return(0);
1326 }
1327
1328 int sdla_change_mtu(struct net_device *dev, int new_mtu)
1329 {
1330 struct frad_local *flp;
1331
1332 flp = dev->priv;
1333
1334 if (dev->start)
1335 return(-EBUSY);
1336
1337 /* for now, you can't change the MTU! */
1338 return(-EOPNOTSUPP);
1339 }
1340
1341 int sdla_set_config(struct net_device *dev, struct ifmap *map)
1342 {
1343 struct frad_local *flp;
1344 int i;
1345 char byte;
1346
1347 flp = dev->priv;
1348
1349 if (flp->initialized)
1350 return(-EINVAL);
1351
1352 for(i=0;i < sizeof(valid_port) / sizeof (int) ; i++)
1353 if (valid_port[i] == map->base_addr)
1354 break;
1355
1356 if (i == sizeof(valid_port) / sizeof(int))
1357 return(-EINVAL);
1358
1359 dev->base_addr = map->base_addr;
1360 request_region(dev->base_addr, SDLA_IO_EXTENTS, dev->name);
1361
1362 /* test for card types, S502A, S502E, S507, S508 */
1363 /* these tests shut down the card completely, so clear the state */
1364 flp->type = SDLA_UNKNOWN;
1365 flp->state = 0;
1366
1367 for(i=1;i<SDLA_IO_EXTENTS;i++)
1368 if (inb(dev->base_addr + i) != 0xFF)
1369 break;
1370
1371 if (i == SDLA_IO_EXTENTS)
1372 {
1373 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
1374 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x0F) == 0x08)
1375 {
1376 outb(SDLA_S502E_INTACK, dev->base_addr + SDLA_REG_CONTROL);
1377 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x0F) == 0x0C)
1378 {
1379 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1380 flp->type = SDLA_S502E;
1381 }
1382 }
1383 }
1384
1385 if (flp->type == SDLA_UNKNOWN)
1386 {
1387 for(byte=inb(dev->base_addr),i=0;i<SDLA_IO_EXTENTS;i++)
1388 if (inb(dev->base_addr + i) != byte)
1389 break;
1390
1391 if (i == SDLA_IO_EXTENTS)
1392 {
1393 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1394 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x7E) == 0x30)
1395 {
1396 outb(SDLA_S507_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
1397 if ((inb(dev->base_addr + SDLA_S502_STS) & 0x7E) == 0x32)
1398 {
1399 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1400 flp->type = SDLA_S507;
1401 }
1402 }
1403 }
1404 }
1405
1406 if (flp->type == SDLA_UNKNOWN)
1407 {
1408 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1409 if ((inb(dev->base_addr + SDLA_S508_STS) & 0x3F) == 0x00)
1410 {
1411 outb(SDLA_S508_INTEN, dev->base_addr + SDLA_REG_CONTROL);
1412 if ((inb(dev->base_addr + SDLA_S508_STS) & 0x3F) == 0x10)
1413 {
1414 outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
1415 flp->type = SDLA_S508;
1416 }
1417 }
1418 }
1419
1420 if (flp->type == SDLA_UNKNOWN)
1421 {
1422 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
1423 if (inb(dev->base_addr + SDLA_S502_STS) == 0x40)
1424 {
1425 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
1426 if (inb(dev->base_addr + SDLA_S502_STS) == 0x40)
1427 {
1428 outb(SDLA_S502A_INTEN, dev->base_addr + SDLA_REG_CONTROL);
1429 if (inb(dev->base_addr + SDLA_S502_STS) == 0x44)
1430 {
1431 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
1432 flp->type = SDLA_S502A;
1433 }
1434 }
1435 }
1436 }
1437
1438 if (flp->type == SDLA_UNKNOWN)
1439 {
1440 printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
1441 return(-ENODEV);
1442 }
1443
1444 switch(dev->base_addr)
1445 {
1446 case 0x270:
1447 case 0x280:
1448 case 0x380:
1449 case 0x390:
1450 if ((flp->type != SDLA_S508) && (flp->type != SDLA_S507))
1451 return(-EINVAL);
1452 }
1453
1454 switch (map->irq)
1455 {
1456 case 2:
1457 if (flp->type != SDLA_S502E)
1458 return(-EINVAL);
1459 break;
1460
1461 case 10:
1462 case 11:
1463 case 12:
1464 case 15:
1465 case 4:
1466 if ((flp->type != SDLA_S508) && (flp->type != SDLA_S507))
1467 return(-EINVAL);
1468
1469 case 3:
1470 case 5:
1471 case 7:
1472 if (flp->type == SDLA_S502A)
1473 return(-EINVAL);
1474 break;
1475
1476 default:
1477 return(-EINVAL);
1478 }
1479 dev->irq = map->irq;
1480
1481 if (request_irq(dev->irq, &sdla_isr, 0, dev->name, dev))
1482 return(-EAGAIN);
1483
1484 if (flp->type == SDLA_S507)
1485 {
1486 switch(dev->irq)
1487 {
1488 case 3:
1489 flp->state = SDLA_S507_IRQ3;
1490 break;
1491 case 4:
1492 flp->state = SDLA_S507_IRQ4;
1493 break;
1494 case 5:
1495 flp->state = SDLA_S507_IRQ5;
1496 break;
1497 case 7:
1498 flp->state = SDLA_S507_IRQ7;
1499 break;
1500 case 10:
1501 flp->state = SDLA_S507_IRQ10;
1502 break;
1503 case 11:
1504 flp->state = SDLA_S507_IRQ11;
1505 break;
1506 case 12:
1507 flp->state = SDLA_S507_IRQ12;
1508 break;
1509 case 15:
1510 flp->state = SDLA_S507_IRQ15;
1511 break;
1512 }
1513 }
1514
1515 for(i=0;i < sizeof(valid_mem) / sizeof (int) ; i++)
1516 if (valid_mem[i] == map->mem_start)
1517 break;
1518
1519 if (i == sizeof(valid_mem) / sizeof(int))
1520 /*
1521 * FIXME:
1522 * BUG BUG BUG: MUST RELEASE THE IRQ WE ALLOCATED IN
1523 * ALL THESE CASES
1524 *
1525 */
1526 return(-EINVAL);
1527
1528 if ((flp->type == SDLA_S502A) && (((map->mem_start & 0xF000) >> 12) == 0x0E))
1529 return(-EINVAL);
1530
1531 if ((flp->type != SDLA_S507) && ((map->mem_start >> 16) == 0x0B))
1532 return(-EINVAL);
1533
1534 if ((flp->type == SDLA_S507) && ((map->mem_start >> 16) == 0x0D))
1535 return(-EINVAL);
1536
1537 dev->mem_start = map->mem_start;
1538 dev->mem_end = dev->mem_start + 0x2000;
1539
1540 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1541 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1542 switch(flp->type)
1543 {
1544 case SDLA_S502A:
1545 case SDLA_S502E:
1546 switch (map->mem_start >> 16)
1547 {
1548 case 0x0A:
1549 byte |= SDLA_S502_SEG_A;
1550 break;
1551 case 0x0C:
1552 byte |= SDLA_S502_SEG_C;
1553 break;
1554 case 0x0D:
1555 byte |= SDLA_S502_SEG_D;
1556 break;
1557 case 0x0E:
1558 byte |= SDLA_S502_SEG_E;
1559 break;
1560 }
1561 break;
1562 case SDLA_S507:
1563 switch (map->mem_start >> 16)
1564 {
1565 case 0x0A:
1566 byte |= SDLA_S507_SEG_A;
1567 break;
1568 case 0x0B:
1569 byte |= SDLA_S507_SEG_B;
1570 break;
1571 case 0x0C:
1572 byte |= SDLA_S507_SEG_C;
1573 break;
1574 case 0x0E:
1575 byte |= SDLA_S507_SEG_E;
1576 break;
1577 }
1578 break;
1579 case SDLA_S508:
1580 switch (map->mem_start >> 16)
1581 {
1582 case 0x0A:
1583 byte |= SDLA_S508_SEG_A;
1584 break;
1585 case 0x0C:
1586 byte |= SDLA_S508_SEG_C;
1587 break;
1588 case 0x0D:
1589 byte |= SDLA_S508_SEG_D;
1590 break;
1591 case 0x0E:
1592 byte |= SDLA_S508_SEG_E;
1593 break;
1594 }
1595 break;
1596 }
1597
1598 /* set the memory bits, and enable access */
1599 outb(byte, dev->base_addr + SDLA_REG_PC_WINDOW);
1600
1601 switch(flp->type)
1602 {
1603 case SDLA_S502E:
1604 flp->state = SDLA_S502E_ENABLE;
1605 break;
1606 case SDLA_S507:
1607 flp->state |= SDLA_MEMEN;
1608 break;
1609 case SDLA_S508:
1610 flp->state = SDLA_MEMEN;
1611 break;
1612 }
1613 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1614
1615 flp->initialized = 1;
1616 return(0);
1617 }
1618
1619 static struct net_device_stats *sdla_stats(struct net_device *dev)
1620 {
1621 struct frad_local *flp;
1622 flp = dev->priv;
1623
1624 return(&flp->stats);
1625 }
1626
1627 int __init sdla_init(struct net_device *dev)
1628 {
1629 struct frad_local *flp;
1630
1631 /* allocate the private data structure */
1632 flp = kmalloc(sizeof(struct frad_local), GFP_KERNEL);
1633 if (!flp)
1634 return(-ENOMEM);
1635
1636 memset(flp, 0, sizeof(struct frad_local));
1637 dev->priv = flp;
1638
1639 dev->flags = 0;
1640 dev->open = sdla_open;
1641 dev->stop = sdla_close;
1642 dev->do_ioctl = sdla_ioctl;
1643 dev->set_config = sdla_set_config;
1644 dev->get_stats = sdla_stats;
1645 dev->hard_start_xmit = sdla_transmit;
1646 dev->change_mtu = sdla_change_mtu;
1647
1648 dev->type = 0xFFFF;
1649 dev->hard_header_len = 0;
1650 dev->addr_len = 0;
1651 dev->mtu = SDLA_MAX_MTU;
1652
1653 dev_init_buffers(dev);
1654
1655 flp->activate = sdla_activate;
1656 flp->deactivate = sdla_deactivate;
1657 flp->assoc = sdla_assoc;
1658 flp->deassoc = sdla_deassoc;
1659 flp->dlci_conf = sdla_dlci_conf;
1660
1661 init_timer(&flp->timer);
1662 flp->timer.expires = 1;
1663 flp->timer.data = (unsigned long) dev;
1664 flp->timer.function = sdla_poll;
1665
1666 return(0);
1667 }
1668
1669 int __init sdla_c_setup(void)
1670 {
1671 printk("%s.\n", version);
1672 register_frad(devname);
1673 return 0;
1674 }
1675
1676 #ifdef MODULE
1677 static struct net_device sdla0 = {"sdla0", 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, sdla_init};
1678
1679 int init_module(void)
1680 {
1681 int result;
1682
1683 sdla_c_setup();
1684 if ((result = register_netdev(&sdla0)) != 0)
1685 return result;
1686 return 0;
1687 }
1688
1689 void cleanup_module(void)
1690 {
1691 unregister_netdev(&sdla0);
1692 if (sdla0.priv)
1693 kfree(sdla0.priv);
1694 if (sdla0.irq)
1695 free_irq(sdla0.irq, &sdla0);
1696 }
1697 #endif /* MODULE */
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