tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/kernel.h>
38#include <linux/types.h>
39#include <linux/fcntl.h>
40#include <linux/interrupt.h>
41#include <linux/ptrace.h>
42#include <linux/ioport.h>
43#include <linux/in.h>
44#include <linux/slab.h>
45#include <linux/string.h>
46#include <linux/timer.h>
47#include <linux/errno.h>
48#include <linux/init.h>
49#include <linux/netdevice.h>
50#include <linux/skbuff.h>
51#include <linux/if_arp.h>
52#include <linux/if_frad.h>
53#include <linux/sdla.h>
54#include <linux/bitops.h>
55
56#include <asm/system.h>
57#include <asm/io.h>
58#include <asm/dma.h>
59#include <asm/uaccess.h>
60
61static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
62
63static unsigned int valid_port[] __initdata = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
64
65static unsigned int valid_mem[] __initdata = {
66 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
67 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
68 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
69 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
70 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
71
72static DEFINE_SPINLOCK(sdla_lock);
73
74/*********************************************************
75 *
76 * these are the core routines that access the card itself
77 *
78 *********************************************************/
79
80#define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
81
82static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
83{
84 char *temp;
85 const void *base;
86 int offset, bytes;
87
88 temp = buf;
89 while(len)
90 {
91 offset = addr & SDLA_ADDR_MASK;
92 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
93 base = (const void *) (dev->mem_start + offset);
94
95 SDLA_WINDOW(dev, addr);
96 memcpy(temp, base, bytes);
97
98 addr += bytes;
99 temp += bytes;
100 len -= bytes;
101 }
102}
103
104static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
105{
106 unsigned long flags;
107 spin_lock_irqsave(&sdla_lock, flags);
108 __sdla_read(dev, addr, buf, len);
109 spin_unlock_irqrestore(&sdla_lock, flags);
110}
111
112static void __sdla_write(struct net_device *dev, int addr,
113 const void *buf, short len)
114{
115 const char *temp;
116 void *base;
117 int offset, bytes;
118
119 temp = buf;
120 while(len)
121 {
122 offset = addr & SDLA_ADDR_MASK;
123 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
124 base = (void *) (dev->mem_start + offset);
125
126 SDLA_WINDOW(dev, addr);
127 memcpy(base, temp, bytes);
128
129 addr += bytes;
130 temp += bytes;
131 len -= bytes;
132 }
133}
134
135static void sdla_write(struct net_device *dev, int addr,
136 const void *buf, short len)
137{
138 unsigned long flags;
139
140 spin_lock_irqsave(&sdla_lock, flags);
141 __sdla_write(dev, addr, buf, len);
142 spin_unlock_irqrestore(&sdla_lock, flags);
143}
144
145
146static void sdla_clear(struct net_device *dev)
147{
148 unsigned long flags;
149 char *base;
150 int len, addr, bytes;
151
152 len = 65536;
153 addr = 0;
154 bytes = SDLA_WINDOW_SIZE;
155 base = (void *) dev->mem_start;
156
157 spin_lock_irqsave(&sdla_lock, flags);
158 while(len)
159 {
160 SDLA_WINDOW(dev, addr);
161 memset(base, 0, bytes);
162
163 addr += bytes;
164 len -= bytes;
165 }
166 spin_unlock_irqrestore(&sdla_lock, flags);
167
168}
169
170static char sdla_byte(struct net_device *dev, int addr)
171{
172 unsigned long flags;
173 char byte, *temp;
174
175 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
176
177 spin_lock_irqsave(&sdla_lock, flags);
178 SDLA_WINDOW(dev, addr);
179 byte = *temp;
180 spin_unlock_irqrestore(&sdla_lock, flags);
181
182 return(byte);
183}
184
185void sdla_stop(struct net_device *dev)
186{
187 struct frad_local *flp;
188
189 flp = dev->priv;
190 switch(flp->type)
191 {
192 case SDLA_S502A:
193 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
194 flp->state = SDLA_HALT;
195 break;
196 case SDLA_S502E:
197 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
198 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
199 flp->state = SDLA_S502E_ENABLE;
200 break;
201 case SDLA_S507:
202 flp->state &= ~SDLA_CPUEN;
203 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
204 break;
205 case SDLA_S508:
206 flp->state &= ~SDLA_CPUEN;
207 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
208 break;
209 }
210}
211
212void sdla_start(struct net_device *dev)
213{
214 struct frad_local *flp;
215
216 flp = dev->priv;
217 switch(flp->type)
218 {
219 case SDLA_S502A:
220 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
221 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
222 flp->state = SDLA_S502A_START;
223 break;
224 case SDLA_S502E:
225 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
226 outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
227 flp->state = 0;
228 break;
229 case SDLA_S507:
230 flp->state |= SDLA_CPUEN;
231 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
232 break;
233 case SDLA_S508:
234 flp->state |= SDLA_CPUEN;
235 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
236 break;
237 }
238}
239
240/****************************************************
241 *
242 * this is used for the S502A/E cards to determine
243 * the speed of the onboard CPU. Calibration is
244 * necessary for the Frame Relay code uploaded
245 * later. Incorrect results cause timing problems
246 * with link checks & status messages
247 *
248 ***************************************************/
249
250int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
251{
252 unsigned long start, done, now;
253 char resp, *temp;
254
255 start = now = jiffies;
256 done = jiffies + jiffs;
257
258 temp = (void *)dev->mem_start;
259 temp += z80_addr & SDLA_ADDR_MASK;
260
261 resp = ~resp1;
262 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
263 {
264 if (jiffies != now)
265 {
266 SDLA_WINDOW(dev, z80_addr);
267 now = jiffies;
268 resp = *temp;
269 }
270 }
271 return(time_before(jiffies, done) ? jiffies - start : -1);
272}
273
274/* constants for Z80 CPU speed */
275#define Z80_READY '1' /* Z80 is ready to begin */
276#define LOADER_READY '2' /* driver is ready to begin */
277#define Z80_SCC_OK '3' /* SCC is on board */
278#define Z80_SCC_BAD '4' /* SCC was not found */
279
280static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
281{
282 int jiffs;
283 char data;
284
285 sdla_start(dev);
286 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
287 return(-EIO);
288
289 data = LOADER_READY;
290 sdla_write(dev, 0, &data, 1);
291
292 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
293 return(-EIO);
294
295 sdla_stop(dev);
296 sdla_read(dev, 0, &data, 1);
297
298 if (data == Z80_SCC_BAD)
299 {
300 printk("%s: SCC bad\n", dev->name);
301 return(-EIO);
302 }
303
304 if (data != Z80_SCC_OK)
305 return(-EINVAL);
306
307 if (jiffs < 165)
308 ifr->ifr_mtu = SDLA_CPU_16M;
309 else if (jiffs < 220)
310 ifr->ifr_mtu = SDLA_CPU_10M;
311 else if (jiffs < 258)
312 ifr->ifr_mtu = SDLA_CPU_8M;
313 else if (jiffs < 357)
314 ifr->ifr_mtu = SDLA_CPU_7M;
315 else if (jiffs < 467)
316 ifr->ifr_mtu = SDLA_CPU_5M;
317 else
318 ifr->ifr_mtu = SDLA_CPU_3M;
319
320 return(0);
321}
322
323/************************************************
324 *
325 * Direct interaction with the Frame Relay code
326 * starts here.
327 *
328 ************************************************/
329
330struct _dlci_stat
331{
332 short dlci __attribute__((packed));
333 char flags __attribute__((packed));
334};
335
336struct _frad_stat
337{
338 char flags;
339 struct _dlci_stat dlcis[SDLA_MAX_DLCI];
340};
341
342static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
343{
344 struct _dlci_stat *pstatus;
345 short *pdlci;
346 int i;
347 char *state, line[30];
348
349 switch (ret)
350 {
351 case SDLA_RET_MODEM:
352 state = data;
353 if (*state & SDLA_MODEM_DCD_LOW)
354 printk(KERN_INFO "%s: Modem DCD unexpectedly low!\n", dev->name);
355 if (*state & SDLA_MODEM_CTS_LOW)
356 printk(KERN_INFO "%s: Modem CTS unexpectedly low!\n", dev->name);
357 /* I should probably do something about this! */
358 break;
359
360 case SDLA_RET_CHANNEL_OFF:
361 printk(KERN_INFO "%s: Channel became inoperative!\n", dev->name);
362 /* same here */
363 break;
364
365 case SDLA_RET_CHANNEL_ON:
366 printk(KERN_INFO "%s: Channel became operative!\n", dev->name);
367 /* same here */
368 break;
369
370 case SDLA_RET_DLCI_STATUS:
371 printk(KERN_INFO "%s: Status change reported by Access Node.\n", dev->name);
372 len /= sizeof(struct _dlci_stat);
373 for(pstatus = data, i=0;i < len;i++,pstatus++)
374 {
375 if (pstatus->flags & SDLA_DLCI_NEW)
376 state = "new";
377 else if (pstatus->flags & SDLA_DLCI_DELETED)
378 state = "deleted";
379 else if (pstatus->flags & SDLA_DLCI_ACTIVE)
380 state = "active";
381 else
382 {
383 sprintf(line, "unknown status: %02X", pstatus->flags);
384 state = line;
385 }
386 printk(KERN_INFO "%s: DLCI %i: %s.\n", dev->name, pstatus->dlci, state);
387 /* same here */
388 }
389 break;
390
391 case SDLA_RET_DLCI_UNKNOWN:
392 printk(KERN_INFO "%s: Received unknown DLCIs:", dev->name);
393 len /= sizeof(short);
394 for(pdlci = data,i=0;i < len;i++,pdlci++)
395 printk(" %i", *pdlci);
396 printk("\n");
397 break;
398
399 case SDLA_RET_TIMEOUT:
400 printk(KERN_ERR "%s: Command timed out!\n", dev->name);
401 break;
402
403 case SDLA_RET_BUF_OVERSIZE:
404 printk(KERN_INFO "%s: Bc/CIR overflow, acceptable size is %i\n", dev->name, len);
405 break;
406
407 case SDLA_RET_BUF_TOO_BIG:
408 printk(KERN_INFO "%s: Buffer size over specified max of %i\n", dev->name, len);
409 break;
410
411 case SDLA_RET_CHANNEL_INACTIVE:
412 case SDLA_RET_DLCI_INACTIVE:
413 case SDLA_RET_CIR_OVERFLOW:
414 case SDLA_RET_NO_BUFS:
415 if (cmd == SDLA_INFORMATION_WRITE)
416 break;
417
418 default:
419 printk(KERN_DEBUG "%s: Cmd 0x%2.2X generated return code 0x%2.2X\n", dev->name, cmd, ret);
420 /* Further processing could be done here */
421 break;
422 }
423}
424
425static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags,
426 void *inbuf, short inlen, void *outbuf, short *outlen)
427{
428 static struct _frad_stat status;
429 struct frad_local *flp;
430 struct sdla_cmd *cmd_buf;
431 unsigned long pflags;
432 unsigned long jiffs;
433 int ret, waiting, len;
434 long window;
435
436 flp = dev->priv;
437 window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
438 cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
439 ret = 0;
440 len = 0;
441 jiffs = jiffies + HZ; /* 1 second is plenty */
442
443 spin_lock_irqsave(&sdla_lock, pflags);
444 SDLA_WINDOW(dev, window);
445 cmd_buf->cmd = cmd;
446 cmd_buf->dlci = dlci;
447 cmd_buf->flags = flags;
448
449 if (inbuf)
450 memcpy(cmd_buf->data, inbuf, inlen);
451
452 cmd_buf->length = inlen;
453
454 cmd_buf->opp_flag = 1;
455 spin_unlock_irqrestore(&sdla_lock, pflags);
456
457 waiting = 1;
458 len = 0;
459 while (waiting && time_before_eq(jiffies, jiffs))
460 {
461 if (waiting++ % 3)
462 {
463 spin_lock_irqsave(&sdla_lock, pflags);
464 SDLA_WINDOW(dev, window);
465 waiting = ((volatile int)(cmd_buf->opp_flag));
466 spin_unlock_irqrestore(&sdla_lock, pflags);
467 }
468 }
469
470 if (!waiting)
471 {
472
473 spin_lock_irqsave(&sdla_lock, pflags);
474 SDLA_WINDOW(dev, window);
475 ret = cmd_buf->retval;
476 len = cmd_buf->length;
477 if (outbuf && outlen)
478 {
479 *outlen = *outlen >= len ? len : *outlen;
480
481 if (*outlen)
482 memcpy(outbuf, cmd_buf->data, *outlen);
483 }
484
485 /* This is a local copy that's used for error handling */
486 if (ret)
487 memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
488
489 spin_unlock_irqrestore(&sdla_lock, pflags);
490 }
491 else
492 ret = SDLA_RET_TIMEOUT;
493
494 if (ret != SDLA_RET_OK)
495 sdla_errors(dev, cmd, dlci, ret, len, &status);
496
497 return(ret);
498}
499
500/***********************************************
501 *
502 * these functions are called by the DLCI driver
503 *
504 ***********************************************/
505
506static int sdla_reconfig(struct net_device *dev);
507
508int sdla_activate(struct net_device *slave, struct net_device *master)
509{
510 struct frad_local *flp;
511 int i;
512
513 flp = slave->priv;
514
515 for(i=0;i<CONFIG_DLCI_MAX;i++)
516 if (flp->master[i] == master)
517 break;
518
519 if (i == CONFIG_DLCI_MAX)
520 return(-ENODEV);
521
522 flp->dlci[i] = abs(flp->dlci[i]);
523
524 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
525 sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
526
527 return(0);
528}
529
530int sdla_deactivate(struct net_device *slave, struct net_device *master)
531{
532 struct frad_local *flp;
533 int i;
534
535 flp = slave->priv;
536
537 for(i=0;i<CONFIG_DLCI_MAX;i++)
538 if (flp->master[i] == master)
539 break;
540
541 if (i == CONFIG_DLCI_MAX)
542 return(-ENODEV);
543
544 flp->dlci[i] = -abs(flp->dlci[i]);
545
546 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
547 sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
548
549 return(0);
550}
551
552int sdla_assoc(struct net_device *slave, struct net_device *master)
553{
554 struct frad_local *flp;
555 int i;
556
557 if (master->type != ARPHRD_DLCI)
558 return(-EINVAL);
559
560 flp = slave->priv;
561
562 for(i=0;i<CONFIG_DLCI_MAX;i++)
563 {
564 if (!flp->master[i])
565 break;
566 if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
567 return(-EADDRINUSE);
568 }
569
570 if (i == CONFIG_DLCI_MAX)
571 return(-EMLINK); /* #### Alan: Comments on this ?? */
572
573
574 flp->master[i] = master;
575 flp->dlci[i] = -*(short *)(master->dev_addr);
576 master->mtu = slave->mtu;
577
578 if (netif_running(slave)) {
579 if (flp->config.station == FRAD_STATION_CPE)
580 sdla_reconfig(slave);
581 else
582 sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
583 }
584
585 return(0);
586}
587
588int sdla_deassoc(struct net_device *slave, struct net_device *master)
589{
590 struct frad_local *flp;
591 int i;
592
593 flp = slave->priv;
594
595 for(i=0;i<CONFIG_DLCI_MAX;i++)
596 if (flp->master[i] == master)
597 break;
598
599 if (i == CONFIG_DLCI_MAX)
600 return(-ENODEV);
601
602 flp->master[i] = NULL;
603 flp->dlci[i] = 0;
604
605
606 if (netif_running(slave)) {
607 if (flp->config.station == FRAD_STATION_CPE)
608 sdla_reconfig(slave);
609 else
610 sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
611 }
612
613 return(0);
614}
615
616int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
617{
618 struct frad_local *flp;
619 struct dlci_local *dlp;
620 int i;
621 short len, ret;
622
623 flp = slave->priv;
624
625 for(i=0;i<CONFIG_DLCI_MAX;i++)
626 if (flp->master[i] == master)
627 break;
628
629 if (i == CONFIG_DLCI_MAX)
630 return(-ENODEV);
631
632 dlp = master->priv;
633
634 ret = SDLA_RET_OK;
635 len = sizeof(struct dlci_conf);
636 if (netif_running(slave)) {
637 if (get)
638 ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
639 NULL, 0, &dlp->config, &len);
640 else
641 ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
642 &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
643 }
644
645 return(ret == SDLA_RET_OK ? 0 : -EIO);
646}
647
648/**************************
649 *
650 * now for the Linux driver
651 *
652 **************************/
653
654/* NOTE: the DLCI driver deals with freeing the SKB!! */
655static int sdla_transmit(struct sk_buff *skb, struct net_device *dev)
656{
657 struct frad_local *flp;
658 int ret, addr, accept, i;
659 short size;
660 unsigned long flags;
661 struct buf_entry *pbuf;
662
663 flp = dev->priv;
664 ret = 0;
665 accept = 1;
666
667 netif_stop_queue(dev);
668
669 /*
670 * stupid GateD insists on setting up the multicast router thru us
671 * and we're ill equipped to handle a non Frame Relay packet at this
672 * time!
673 */
674
675 accept = 1;
676 switch (dev->type)
677 {
678 case ARPHRD_FRAD:
679 if (skb->dev->type != ARPHRD_DLCI)
680 {
681 printk(KERN_WARNING "%s: Non DLCI device, type %i, tried to send on FRAD module.\n", dev->name, skb->dev->type);
682 accept = 0;
683 }
684 break;
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 if (accept)
691 {
692 /* this is frame specific, but till there's a PPP module, it's the default */
693 switch (flp->type)
694 {
695 case SDLA_S502A:
696 case SDLA_S502E:
697 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
698 break;
699 case SDLA_S508:
700 size = sizeof(addr);
701 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
702 if (ret == SDLA_RET_OK)
703 {
704
705 spin_lock_irqsave(&sdla_lock, flags);
706 SDLA_WINDOW(dev, addr);
707 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
708 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
709 SDLA_WINDOW(dev, addr);
710 pbuf->opp_flag = 1;
711 spin_unlock_irqrestore(&sdla_lock, flags);
712 }
713 break;
714 }
715 switch (ret)
716 {
717 case SDLA_RET_OK:
718 flp->stats.tx_packets++;
719 ret = DLCI_RET_OK;
720 break;
721
722 case SDLA_RET_CIR_OVERFLOW:
723 case SDLA_RET_BUF_OVERSIZE:
724 case SDLA_RET_NO_BUFS:
725 flp->stats.tx_dropped++;
726 ret = DLCI_RET_DROP;
727 break;
728
729 default:
730 flp->stats.tx_errors++;
731 ret = DLCI_RET_ERR;
732 break;
733 }
734 }
735 netif_wake_queue(dev);
736 for(i=0;i<CONFIG_DLCI_MAX;i++)
737 {
738 if(flp->master[i]!=NULL)
739 netif_wake_queue(flp->master[i]);
740 }
741 return(ret);
742}
743
744static void sdla_receive(struct net_device *dev)
745{
746 struct net_device *master;
747 struct frad_local *flp;
748 struct dlci_local *dlp;
749 struct sk_buff *skb;
750
751 struct sdla_cmd *cmd;
752 struct buf_info *pbufi;
753 struct buf_entry *pbuf;
754
755 unsigned long flags;
756 int i=0, received, success, addr, buf_base, buf_top;
757 short dlci, len, len2, split;
758
759 flp = dev->priv;
760 success = 1;
761 received = addr = buf_top = buf_base = 0;
762 len = dlci = 0;
763 skb = NULL;
764 master = NULL;
765 cmd = NULL;
766 pbufi = NULL;
767 pbuf = NULL;
768
769 spin_lock_irqsave(&sdla_lock, flags);
770
771 switch (flp->type)
772 {
773 case SDLA_S502A:
774 case SDLA_S502E:
775 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
776 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
777 success = cmd->opp_flag;
778 if (!success)
779 break;
780
781 dlci = cmd->dlci;
782 len = cmd->length;
783 break;
784
785 case SDLA_S508:
786 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
787 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
788 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
789 success = pbuf->opp_flag;
790 if (!success)
791 break;
792
793 buf_top = pbufi->buf_top;
794 buf_base = pbufi->buf_base;
795 dlci = pbuf->dlci;
796 len = pbuf->length;
797 addr = pbuf->buf_addr;
798 break;
799 }
800
801 /* common code, find the DLCI and get the SKB */
802 if (success)
803 {
804 for (i=0;i<CONFIG_DLCI_MAX;i++)
805 if (flp->dlci[i] == dlci)
806 break;
807
808 if (i == CONFIG_DLCI_MAX)
809 {
810 printk(KERN_NOTICE "%s: Received packet from invalid DLCI %i, ignoring.", dev->name, dlci);
811 flp->stats.rx_errors++;
812 success = 0;
813 }
814 }
815
816 if (success)
817 {
818 master = flp->master[i];
819 skb = dev_alloc_skb(len + sizeof(struct frhdr));
820 if (skb == NULL)
821 {
822 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
823 flp->stats.rx_dropped++;
824 success = 0;
825 }
826 else
827 skb_reserve(skb, sizeof(struct frhdr));
828 }
829
830 /* pick up the data */
831 switch (flp->type)
832 {
833 case SDLA_S502A:
834 case SDLA_S502E:
835 if (success)
836 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
837
838 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
839 cmd->opp_flag = 0;
840 break;
841
842 case SDLA_S508:
843 if (success)
844 {
845 /* is this buffer split off the end of the internal ring buffer */
846 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
847 len2 = len - split;
848
849 __sdla_read(dev, addr, skb_put(skb, len2), len2);
850 if (split)
851 __sdla_read(dev, buf_base, skb_put(skb, split), split);
852 }
853
854 /* increment the buffer we're looking at */
855 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
856 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
857 pbuf->opp_flag = 0;
858 break;
859 }
860
861 if (success)
862 {
863 flp->stats.rx_packets++;
864 dlp = master->priv;
865 (*dlp->receive)(skb, master);
866 }
867
868 spin_unlock_irqrestore(&sdla_lock, flags);
869}
870
871static irqreturn_t sdla_isr(int irq, void *dev_id, struct pt_regs * regs)
872{
873 struct net_device *dev;
874 struct frad_local *flp;
875 char byte;
876
877 dev = dev_id;
878
879 if (dev == NULL)
880 {
881 printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
882 return IRQ_NONE;
883 }
884
885 flp = dev->priv;
886
887 if (!flp->initialized)
888 {
889 printk(KERN_WARNING "%s: irq %d for uninitialized device.\n", dev->name, irq);
890 return IRQ_NONE;
891 }
892
893 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
894 switch (byte)
895 {
896 case SDLA_INTR_RX:
897 sdla_receive(dev);
898 break;
899
900 /* the command will get an error return, which is processed above */
901 case SDLA_INTR_MODEM:
902 case SDLA_INTR_STATUS:
903 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
904 break;
905
906 case SDLA_INTR_TX:
907 case SDLA_INTR_COMPLETE:
908 case SDLA_INTR_TIMER:
909 printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, byte);
910 break;
911 }
912
913 /* the S502E requires a manual acknowledgement of the interrupt */
914 if (flp->type == SDLA_S502E)
915 {
916 flp->state &= ~SDLA_S502E_INTACK;
917 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
918 flp->state |= SDLA_S502E_INTACK;
919 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
920 }
921
922 /* this clears the byte, informing the Z80 we're done */
923 byte = 0;
924 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
925 return IRQ_HANDLED;
926}
927
928static void sdla_poll(unsigned long device)
929{
930 struct net_device *dev;
931 struct frad_local *flp;
932
933 dev = (struct net_device *) device;
934 flp = dev->priv;
935
936 if (sdla_byte(dev, SDLA_502_RCV_BUF))
937 sdla_receive(dev);
938
939 flp->timer.expires = 1;
940 add_timer(&flp->timer);
941}
942
943static int sdla_close(struct net_device *dev)
944{
945 struct frad_local *flp;
946 struct intr_info intr;
947 int len, i;
948 short dlcis[CONFIG_DLCI_MAX];
949
950 flp = dev->priv;
951
952 len = 0;
953 for(i=0;i<CONFIG_DLCI_MAX;i++)
954 if (flp->dlci[i])
955 dlcis[len++] = abs(flp->dlci[i]);
956 len *= 2;
957
958 if (flp->config.station == FRAD_STATION_NODE)
959 {
960 for(i=0;i<CONFIG_DLCI_MAX;i++)
961 if (flp->dlci[i] > 0)
962 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
963 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
964 }
965
966 memset(&intr, 0, sizeof(intr));
967 /* let's start up the reception */
968 switch(flp->type)
969 {
970 case SDLA_S502A:
971 del_timer(&flp->timer);
972 break;
973
974 case SDLA_S502E:
975 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
976 flp->state &= ~SDLA_S502E_INTACK;
977 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
978 break;
979
980 case SDLA_S507:
981 break;
982
983 case SDLA_S508:
984 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
985 flp->state &= ~SDLA_S508_INTEN;
986 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
987 break;
988 }
989
990 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
991
992 netif_stop_queue(dev);
993
994 return(0);
995}
996
997struct conf_data {
998 struct frad_conf config;
999 short dlci[CONFIG_DLCI_MAX];
1000};
1001
1002static int sdla_open(struct net_device *dev)
1003{
1004 struct frad_local *flp;
1005 struct dlci_local *dlp;
1006 struct conf_data data;
1007 struct intr_info intr;
1008 int len, i;
1009 char byte;
1010
1011 flp = dev->priv;
1012
1013 if (!flp->initialized)
1014 return(-EPERM);
1015
1016 if (!flp->configured)
1017 return(-EPERM);
1018
1019 /* time to send in the configuration */
1020 len = 0;
1021 for(i=0;i<CONFIG_DLCI_MAX;i++)
1022 if (flp->dlci[i])
1023 data.dlci[len++] = abs(flp->dlci[i]);
1024 len *= 2;
1025
1026 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1027 len += sizeof(struct frad_conf);
1028
1029 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1030 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1031
1032 if (flp->type == SDLA_S508)
1033 flp->buffer = 0;
1034
1035 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1036
1037 /* let's start up the reception */
1038 memset(&intr, 0, sizeof(intr));
1039 switch(flp->type)
1040 {
1041 case SDLA_S502A:
1042 flp->timer.expires = 1;
1043 add_timer(&flp->timer);
1044 break;
1045
1046 case SDLA_S502E:
1047 flp->state |= SDLA_S502E_ENABLE;
1048 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1049 flp->state |= SDLA_S502E_INTACK;
1050 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1051 byte = 0;
1052 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1053 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1054 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1055 break;
1056
1057 case SDLA_S507:
1058 break;
1059
1060 case SDLA_S508:
1061 flp->state |= SDLA_S508_INTEN;
1062 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1063 byte = 0;
1064 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1065 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1066 intr.irq = dev->irq;
1067 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1068 break;
1069 }
1070
1071 if (flp->config.station == FRAD_STATION_CPE)
1072 {
1073 byte = SDLA_ICS_STATUS_ENQ;
1074 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1075 }
1076 else
1077 {
1078 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1079 for(i=0;i<CONFIG_DLCI_MAX;i++)
1080 if (flp->dlci[i] > 0)
1081 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1082 }
1083
1084 /* configure any specific DLCI settings */
1085 for(i=0;i<CONFIG_DLCI_MAX;i++)
1086 if (flp->dlci[i])
1087 {
1088 dlp = flp->master[i]->priv;
1089 if (dlp->configured)
1090 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1091 }
1092
1093 netif_start_queue(dev);
1094
1095 return(0);
1096}
1097
1098static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
1099{
1100 struct frad_local *flp;
1101 struct conf_data data;
1102 int i;
1103 short size;
1104
1105 if (dev->type == 0xFFFF)
1106 return(-EUNATCH);
1107
1108 flp = dev->priv;
1109
1110 if (!get)
1111 {
1112 if (netif_running(dev))
1113 return(-EBUSY);
1114
1115 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1116 return -EFAULT;
1117
1118 if (data.config.station & ~FRAD_STATION_NODE)
1119 return(-EINVAL);
1120
1121 if (data.config.flags & ~FRAD_VALID_FLAGS)
1122 return(-EINVAL);
1123
1124 if ((data.config.kbaud < 0) ||
1125 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1126 return(-EINVAL);
1127
1128 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1129 return(-EINVAL);
1130
1131 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1132 return(-EINVAL);
1133
1134 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1135 return(-EINVAL);
1136
1137 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1138 return(-EINVAL);
1139
1140 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1141 return(-EINVAL);
1142
1143 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1144 return(-EINVAL);
1145
1146 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1147 return(-EINVAL);
1148
1149 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1150 flp->config.flags |= SDLA_DIRECT_RECV;
1151
1152 if (flp->type == SDLA_S508)
1153 flp->config.flags |= SDLA_TX70_RX30;
1154
1155 if (dev->mtu != flp->config.mtu)
1156 {
1157 /* this is required to change the MTU */
1158 dev->mtu = flp->config.mtu;
1159 for(i=0;i<CONFIG_DLCI_MAX;i++)
1160 if (flp->master[i])
1161 flp->master[i]->mtu = flp->config.mtu;
1162 }
1163
1164 flp->config.mtu += sizeof(struct frhdr);
1165
1166 /* off to the races! */
1167 if (!flp->configured)
1168 sdla_start(dev);
1169
1170 flp->configured = 1;
1171 }
1172 else
1173 {
1174 /* no sense reading if the CPU isn't started */
1175 if (netif_running(dev))
1176 {
1177 size = sizeof(data);
1178 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1179 return(-EIO);
1180 }
1181 else
1182 if (flp->configured)
1183 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1184 else
1185 memset(&data.config, 0, sizeof(struct frad_conf));
1186
1187 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1188 data.config.flags &= FRAD_VALID_FLAGS;
1189 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1190 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1191 }
1192
1193 return(0);
1194}
1195
1196static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
1197{
1198 struct sdla_mem mem;
1199 char *temp;
1200
1201 if(copy_from_user(&mem, info, sizeof(mem)))
1202 return -EFAULT;
1203
1204 if (read)
1205 {
1206 temp = kmalloc(mem.len, GFP_KERNEL);
1207 if (!temp)
1208 return(-ENOMEM);
1209 memset(temp, 0, mem.len);
1210 sdla_read(dev, mem.addr, temp, mem.len);
1211 if(copy_to_user(mem.data, temp, mem.len))
1212 {
1213 kfree(temp);
1214 return -EFAULT;
1215 }
1216 kfree(temp);
1217 }
1218 else
1219 {
1220 temp = kmalloc(mem.len, GFP_KERNEL);
1221 if (!temp)
1222 return(-ENOMEM);
1223 if(copy_from_user(temp, mem.data, mem.len))
1224 {
1225 kfree(temp);
1226 return -EFAULT;
1227 }
1228 sdla_write(dev, mem.addr, temp, mem.len);
1229 kfree(temp);
1230 }
1231 return(0);
1232}
1233
1234static int sdla_reconfig(struct net_device *dev)
1235{
1236 struct frad_local *flp;
1237 struct conf_data data;
1238 int i, len;
1239
1240 flp = dev->priv;
1241
1242 len = 0;
1243 for(i=0;i<CONFIG_DLCI_MAX;i++)
1244 if (flp->dlci[i])
1245 data.dlci[len++] = flp->dlci[i];
1246 len *= 2;
1247
1248 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1249 len += sizeof(struct frad_conf);
1250
1251 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1252 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1253 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1254
1255 return(0);
1256}
1257
1258static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1259{
1260 struct frad_local *flp;
1261
1262 if(!capable(CAP_NET_ADMIN))
1263 return -EPERM;
1264
1265 flp = dev->priv;
1266
1267 if (!flp->initialized)
1268 return(-EINVAL);
1269
1270 switch (cmd)
1271 {
1272 case FRAD_GET_CONF:
1273 case FRAD_SET_CONF:
1274 return(sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF));
1275
1276 case SDLA_IDENTIFY:
1277 ifr->ifr_flags = flp->type;
1278 break;
1279
1280 case SDLA_CPUSPEED:
1281 return(sdla_cpuspeed(dev, ifr));
1282
1283/* ==========================================================
1284NOTE: This is rather a useless action right now, as the
1285 current driver does not support protocols other than
1286 FR. However, Sangoma has modules for a number of
1287 other protocols in the works.
1288============================================================*/
1289 case SDLA_PROTOCOL:
1290 if (flp->configured)
1291 return(-EALREADY);
1292
1293 switch (ifr->ifr_flags)
1294 {
1295 case ARPHRD_FRAD:
1296 dev->type = ifr->ifr_flags;
1297 break;
1298 default:
1299 return(-ENOPROTOOPT);
1300 }
1301 break;
1302
1303 case SDLA_CLEARMEM:
1304 sdla_clear(dev);
1305 break;
1306
1307 case SDLA_WRITEMEM:
1308 case SDLA_READMEM:
1309 if(!capable(CAP_SYS_RAWIO))
1310 return -EPERM;
1311 return(sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM));
1312
1313 case SDLA_START:
1314 sdla_start(dev);
1315 break;
1316
1317 case SDLA_STOP:
1318 sdla_stop(dev);
1319 break;
1320
1321 default:
1322 return(-EOPNOTSUPP);
1323 }
1324 return(0);
1325}
1326
1327int sdla_change_mtu(struct net_device *dev, int new_mtu)
1328{
1329 struct frad_local *flp;
1330
1331 flp = dev->priv;
1332
1333 if (netif_running(dev))
1334 return(-EBUSY);
1335
1336 /* for now, you can't change the MTU! */
1337 return(-EOPNOTSUPP);
1338}
1339
1340int sdla_set_config(struct net_device *dev, struct ifmap *map)
1341{
1342 struct frad_local *flp;
1343 int i;
1344 char byte;
1345 unsigned base;
1346 int err = -EINVAL;
1347
1348 flp = dev->priv;
1349
1350 if (flp->initialized)
1351 return(-EINVAL);
1352
1353 for(i=0;i < sizeof(valid_port) / sizeof (int) ; i++)
1354 if (valid_port[i] == map->base_addr)
1355 break;
1356
1357 if (i == sizeof(valid_port) / sizeof(int))
1358 return(-EINVAL);
1359
1360 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
1361 printk(KERN_WARNING "SDLA: io-port 0x%04lx in use \n", dev->base_addr);
1362 return(-EINVAL);
1363 }
1364 base = map->base_addr;
1365
1366 /* test for card types, S502A, S502E, S507, S508 */
1367 /* these tests shut down the card completely, so clear the state */
1368 flp->type = SDLA_UNKNOWN;
1369 flp->state = 0;
1370
1371 for(i=1;i<SDLA_IO_EXTENTS;i++)
1372 if (inb(base + i) != 0xFF)
1373 break;
1374
1375 if (i == SDLA_IO_EXTENTS) {
1376 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
1377 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
1378 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
1379 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
1380 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1381 flp->type = SDLA_S502E;
1382 goto got_type;
1383 }
1384 }
1385 }
1386
1387 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
1388 if (inb(base + i) != byte)
1389 break;
1390
1391 if (i == SDLA_IO_EXTENTS) {
1392 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1393 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
1394 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
1395 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
1396 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1397 flp->type = SDLA_S507;
1398 goto got_type;
1399 }
1400 }
1401 }
1402
1403 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1404 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
1405 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
1406 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
1407 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1408 flp->type = SDLA_S508;
1409 goto got_type;
1410 }
1411 }
1412
1413 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
1414 if (inb(base + SDLA_S502_STS) == 0x40) {
1415 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1416 if (inb(base + SDLA_S502_STS) == 0x40) {
1417 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
1418 if (inb(base + SDLA_S502_STS) == 0x44) {
1419 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1420 flp->type = SDLA_S502A;
1421 goto got_type;
1422 }
1423 }
1424 }
1425
1426 printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
1427 err = -ENODEV;
1428 goto fail;
1429
1430got_type:
1431 switch(base) {
1432 case 0x270:
1433 case 0x280:
1434 case 0x380:
1435 case 0x390:
1436 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1437 goto fail;
1438 }
1439
1440 switch (map->irq) {
1441 case 2:
1442 if (flp->type != SDLA_S502E)
1443 goto fail;
1444 break;
1445
1446 case 10:
1447 case 11:
1448 case 12:
1449 case 15:
1450 case 4:
1451 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1452 goto fail;
1453 break;
1454 case 3:
1455 case 5:
1456 case 7:
1457 if (flp->type == SDLA_S502A)
1458 goto fail;
1459 break;
1460
1461 default:
1462 goto fail;
1463 }
1464
1465 err = -EAGAIN;
1466 if (request_irq(dev->irq, &sdla_isr, 0, dev->name, dev))
1467 goto fail;
1468
1469 if (flp->type == SDLA_S507) {
1470 switch(dev->irq) {
1471 case 3:
1472 flp->state = SDLA_S507_IRQ3;
1473 break;
1474 case 4:
1475 flp->state = SDLA_S507_IRQ4;
1476 break;
1477 case 5:
1478 flp->state = SDLA_S507_IRQ5;
1479 break;
1480 case 7:
1481 flp->state = SDLA_S507_IRQ7;
1482 break;
1483 case 10:
1484 flp->state = SDLA_S507_IRQ10;
1485 break;
1486 case 11:
1487 flp->state = SDLA_S507_IRQ11;
1488 break;
1489 case 12:
1490 flp->state = SDLA_S507_IRQ12;
1491 break;
1492 case 15:
1493 flp->state = SDLA_S507_IRQ15;
1494 break;
1495 }
1496 }
1497
1498 for(i=0;i < sizeof(valid_mem) / sizeof (int) ; i++)
1499 if (valid_mem[i] == map->mem_start)
1500 break;
1501
1502 err = -EINVAL;
1503 if (i == sizeof(valid_mem) / sizeof(int))
1504 goto fail2;
1505
1506 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
1507 goto fail2;
1508
1509 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
1510 goto fail2;
1511
1512 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
1513 goto fail2;
1514
1515 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1516 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1517 switch(flp->type) {
1518 case SDLA_S502A:
1519 case SDLA_S502E:
1520 switch (map->mem_start >> 16) {
1521 case 0x0A:
1522 byte |= SDLA_S502_SEG_A;
1523 break;
1524 case 0x0C:
1525 byte |= SDLA_S502_SEG_C;
1526 break;
1527 case 0x0D:
1528 byte |= SDLA_S502_SEG_D;
1529 break;
1530 case 0x0E:
1531 byte |= SDLA_S502_SEG_E;
1532 break;
1533 }
1534 break;
1535 case SDLA_S507:
1536 switch (map->mem_start >> 16) {
1537 case 0x0A:
1538 byte |= SDLA_S507_SEG_A;
1539 break;
1540 case 0x0B:
1541 byte |= SDLA_S507_SEG_B;
1542 break;
1543 case 0x0C:
1544 byte |= SDLA_S507_SEG_C;
1545 break;
1546 case 0x0E:
1547 byte |= SDLA_S507_SEG_E;
1548 break;
1549 }
1550 break;
1551 case SDLA_S508:
1552 switch (map->mem_start >> 16) {
1553 case 0x0A:
1554 byte |= SDLA_S508_SEG_A;
1555 break;
1556 case 0x0C:
1557 byte |= SDLA_S508_SEG_C;
1558 break;
1559 case 0x0D:
1560 byte |= SDLA_S508_SEG_D;
1561 break;
1562 case 0x0E:
1563 byte |= SDLA_S508_SEG_E;
1564 break;
1565 }
1566 break;
1567 }
1568
1569 /* set the memory bits, and enable access */
1570 outb(byte, base + SDLA_REG_PC_WINDOW);
1571
1572 switch(flp->type)
1573 {
1574 case SDLA_S502E:
1575 flp->state = SDLA_S502E_ENABLE;
1576 break;
1577 case SDLA_S507:
1578 flp->state |= SDLA_MEMEN;
1579 break;
1580 case SDLA_S508:
1581 flp->state = SDLA_MEMEN;
1582 break;
1583 }
1584 outb(flp->state, base + SDLA_REG_CONTROL);
1585
1586 dev->irq = map->irq;
1587 dev->base_addr = base;
1588 dev->mem_start = map->mem_start;
1589 dev->mem_end = dev->mem_start + 0x2000;
1590 flp->initialized = 1;
1591 return 0;
1592
1593fail2:
1594 free_irq(map->irq, dev);
1595fail:
1596 release_region(base, SDLA_IO_EXTENTS);
1597 return err;
1598}
1599
1600static struct net_device_stats *sdla_stats(struct net_device *dev)
1601{
1602 struct frad_local *flp;
1603 flp = dev->priv;
1604
1605 return(&flp->stats);
1606}
1607
1608static void setup_sdla(struct net_device *dev)
1609{
1610 struct frad_local *flp = dev->priv;
1611
1612 netdev_boot_setup_check(dev);
1613
1614 SET_MODULE_OWNER(dev);
1615 dev->flags = 0;
1616 dev->type = 0xFFFF;
1617 dev->hard_header_len = 0;
1618 dev->addr_len = 0;
1619 dev->mtu = SDLA_MAX_MTU;
1620
1621 dev->open = sdla_open;
1622 dev->stop = sdla_close;
1623 dev->do_ioctl = sdla_ioctl;
1624 dev->set_config = sdla_set_config;
1625 dev->get_stats = sdla_stats;
1626 dev->hard_start_xmit = sdla_transmit;
1627 dev->change_mtu = sdla_change_mtu;
1628
1629 flp->activate = sdla_activate;
1630 flp->deactivate = sdla_deactivate;
1631 flp->assoc = sdla_assoc;
1632 flp->deassoc = sdla_deassoc;
1633 flp->dlci_conf = sdla_dlci_conf;
1634
1635 init_timer(&flp->timer);
1636 flp->timer.expires = 1;
1637 flp->timer.data = (unsigned long) dev;
1638 flp->timer.function = sdla_poll;
1639}
1640
1641static struct net_device *sdla;
1642
1643static int __init init_sdla(void)
1644{
1645 int err;
1646
1647 printk("%s.\n", version);
1648
1649 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0", setup_sdla);
1650 if (!sdla)
1651 return -ENOMEM;
1652
1653 err = register_netdev(sdla);
1654 if (err)
1655 free_netdev(sdla);
1656
1657 return err;
1658}
1659
1660static void __exit exit_sdla(void)
1661{
1662 struct frad_local *flp = sdla->priv;
1663
1664 unregister_netdev(sdla);
1665 if (flp->initialized) {
1666 free_irq(sdla->irq, sdla);
1667 release_region(sdla->base_addr, SDLA_IO_EXTENTS);
1668 }
1669 del_timer_sync(&flp->timer);
1670 free_netdev(sdla);
1671}
1672
1673MODULE_LICENSE("GPL");
1674
1675module_init(init_sdla);
1676module_exit(exit_sdla);