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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[deliverable/linux.git] / 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/module.h>
36 #include <linux/kernel.h>
37 #include <linux/types.h>
38 #include <linux/fcntl.h>
39 #include <linux/interrupt.h>
40 #include <linux/ptrace.h>
41 #include <linux/ioport.h>
42 #include <linux/in.h>
43 #include <linux/slab.h>
44 #include <linux/string.h>
45 #include <linux/timer.h>
46 #include <linux/errno.h>
47 #include <linux/init.h>
48 #include <linux/netdevice.h>
49 #include <linux/skbuff.h>
50 #include <linux/if_arp.h>
51 #include <linux/if_frad.h>
52 #include <linux/sdla.h>
53 #include <linux/bitops.h>
54
55 #include <asm/system.h>
56 #include <asm/io.h>
57 #include <asm/dma.h>
58 #include <asm/uaccess.h>
59
60 static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
61
62 static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
63
64 static unsigned int valid_mem[] = {
65 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
66 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
67 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
68 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
69 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
70
71 static DEFINE_SPINLOCK(sdla_lock);
72
73 /*********************************************************
74 *
75 * these are the core routines that access the card itself
76 *
77 *********************************************************/
78
79 #define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
80
81 static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
82 {
83 char *temp;
84 const void *base;
85 int offset, bytes;
86
87 temp = buf;
88 while(len)
89 {
90 offset = addr & SDLA_ADDR_MASK;
91 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
92 base = (const void *) (dev->mem_start + offset);
93
94 SDLA_WINDOW(dev, addr);
95 memcpy(temp, base, bytes);
96
97 addr += bytes;
98 temp += bytes;
99 len -= bytes;
100 }
101 }
102
103 static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
104 {
105 unsigned long flags;
106 spin_lock_irqsave(&sdla_lock, flags);
107 __sdla_read(dev, addr, buf, len);
108 spin_unlock_irqrestore(&sdla_lock, flags);
109 }
110
111 static void __sdla_write(struct net_device *dev, int addr,
112 const void *buf, short len)
113 {
114 const char *temp;
115 void *base;
116 int offset, bytes;
117
118 temp = buf;
119 while(len)
120 {
121 offset = addr & SDLA_ADDR_MASK;
122 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
123 base = (void *) (dev->mem_start + offset);
124
125 SDLA_WINDOW(dev, addr);
126 memcpy(base, temp, bytes);
127
128 addr += bytes;
129 temp += bytes;
130 len -= bytes;
131 }
132 }
133
134 static void sdla_write(struct net_device *dev, int addr,
135 const void *buf, short len)
136 {
137 unsigned long flags;
138
139 spin_lock_irqsave(&sdla_lock, flags);
140 __sdla_write(dev, addr, buf, len);
141 spin_unlock_irqrestore(&sdla_lock, flags);
142 }
143
144
145 static void sdla_clear(struct net_device *dev)
146 {
147 unsigned long flags;
148 char *base;
149 int len, addr, bytes;
150
151 len = 65536;
152 addr = 0;
153 bytes = SDLA_WINDOW_SIZE;
154 base = (void *) dev->mem_start;
155
156 spin_lock_irqsave(&sdla_lock, flags);
157 while(len)
158 {
159 SDLA_WINDOW(dev, addr);
160 memset(base, 0, bytes);
161
162 addr += bytes;
163 len -= bytes;
164 }
165 spin_unlock_irqrestore(&sdla_lock, flags);
166
167 }
168
169 static char sdla_byte(struct net_device *dev, int addr)
170 {
171 unsigned long flags;
172 char byte, *temp;
173
174 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
175
176 spin_lock_irqsave(&sdla_lock, flags);
177 SDLA_WINDOW(dev, addr);
178 byte = *temp;
179 spin_unlock_irqrestore(&sdla_lock, flags);
180
181 return(byte);
182 }
183
184 static void sdla_stop(struct net_device *dev)
185 {
186 struct frad_local *flp;
187
188 flp = dev->priv;
189 switch(flp->type)
190 {
191 case SDLA_S502A:
192 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
193 flp->state = SDLA_HALT;
194 break;
195 case SDLA_S502E:
196 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
197 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
198 flp->state = SDLA_S502E_ENABLE;
199 break;
200 case SDLA_S507:
201 flp->state &= ~SDLA_CPUEN;
202 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
203 break;
204 case SDLA_S508:
205 flp->state &= ~SDLA_CPUEN;
206 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
207 break;
208 }
209 }
210
211 static void sdla_start(struct net_device *dev)
212 {
213 struct frad_local *flp;
214
215 flp = dev->priv;
216 switch(flp->type)
217 {
218 case SDLA_S502A:
219 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
220 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
221 flp->state = SDLA_S502A_START;
222 break;
223 case SDLA_S502E:
224 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
225 outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
226 flp->state = 0;
227 break;
228 case SDLA_S507:
229 flp->state |= SDLA_CPUEN;
230 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
231 break;
232 case SDLA_S508:
233 flp->state |= SDLA_CPUEN;
234 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
235 break;
236 }
237 }
238
239 /****************************************************
240 *
241 * this is used for the S502A/E cards to determine
242 * the speed of the onboard CPU. Calibration is
243 * necessary for the Frame Relay code uploaded
244 * later. Incorrect results cause timing problems
245 * with link checks & status messages
246 *
247 ***************************************************/
248
249 static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
250 {
251 unsigned long start, done, now;
252 char resp, *temp;
253
254 start = now = jiffies;
255 done = jiffies + jiffs;
256
257 temp = (void *)dev->mem_start;
258 temp += z80_addr & SDLA_ADDR_MASK;
259
260 resp = ~resp1;
261 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
262 {
263 if (jiffies != now)
264 {
265 SDLA_WINDOW(dev, z80_addr);
266 now = jiffies;
267 resp = *temp;
268 }
269 }
270 return(time_before(jiffies, done) ? jiffies - start : -1);
271 }
272
273 /* constants for Z80 CPU speed */
274 #define Z80_READY '1' /* Z80 is ready to begin */
275 #define LOADER_READY '2' /* driver is ready to begin */
276 #define Z80_SCC_OK '3' /* SCC is on board */
277 #define Z80_SCC_BAD '4' /* SCC was not found */
278
279 static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
280 {
281 int jiffs;
282 char data;
283
284 sdla_start(dev);
285 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
286 return(-EIO);
287
288 data = LOADER_READY;
289 sdla_write(dev, 0, &data, 1);
290
291 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
292 return(-EIO);
293
294 sdla_stop(dev);
295 sdla_read(dev, 0, &data, 1);
296
297 if (data == Z80_SCC_BAD)
298 {
299 printk("%s: SCC bad\n", dev->name);
300 return(-EIO);
301 }
302
303 if (data != Z80_SCC_OK)
304 return(-EINVAL);
305
306 if (jiffs < 165)
307 ifr->ifr_mtu = SDLA_CPU_16M;
308 else if (jiffs < 220)
309 ifr->ifr_mtu = SDLA_CPU_10M;
310 else if (jiffs < 258)
311 ifr->ifr_mtu = SDLA_CPU_8M;
312 else if (jiffs < 357)
313 ifr->ifr_mtu = SDLA_CPU_7M;
314 else if (jiffs < 467)
315 ifr->ifr_mtu = SDLA_CPU_5M;
316 else
317 ifr->ifr_mtu = SDLA_CPU_3M;
318
319 return(0);
320 }
321
322 /************************************************
323 *
324 * Direct interaction with the Frame Relay code
325 * starts here.
326 *
327 ************************************************/
328
329 struct _dlci_stat
330 {
331 short dlci;
332 char flags;
333 } __attribute__((packed));
334
335 struct _frad_stat
336 {
337 char flags;
338 struct _dlci_stat dlcis[SDLA_MAX_DLCI];
339 };
340
341 static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
342 {
343 struct _dlci_stat *pstatus;
344 short *pdlci;
345 int i;
346 char *state, line[30];
347
348 switch (ret)
349 {
350 case SDLA_RET_MODEM:
351 state = data;
352 if (*state & SDLA_MODEM_DCD_LOW)
353 printk(KERN_INFO "%s: Modem DCD unexpectedly low!\n", dev->name);
354 if (*state & SDLA_MODEM_CTS_LOW)
355 printk(KERN_INFO "%s: Modem CTS unexpectedly low!\n", dev->name);
356 /* I should probably do something about this! */
357 break;
358
359 case SDLA_RET_CHANNEL_OFF:
360 printk(KERN_INFO "%s: Channel became inoperative!\n", dev->name);
361 /* same here */
362 break;
363
364 case SDLA_RET_CHANNEL_ON:
365 printk(KERN_INFO "%s: Channel became operative!\n", dev->name);
366 /* same here */
367 break;
368
369 case SDLA_RET_DLCI_STATUS:
370 printk(KERN_INFO "%s: Status change reported by Access Node.\n", dev->name);
371 len /= sizeof(struct _dlci_stat);
372 for(pstatus = data, i=0;i < len;i++,pstatus++)
373 {
374 if (pstatus->flags & SDLA_DLCI_NEW)
375 state = "new";
376 else if (pstatus->flags & SDLA_DLCI_DELETED)
377 state = "deleted";
378 else if (pstatus->flags & SDLA_DLCI_ACTIVE)
379 state = "active";
380 else
381 {
382 sprintf(line, "unknown status: %02X", pstatus->flags);
383 state = line;
384 }
385 printk(KERN_INFO "%s: DLCI %i: %s.\n", dev->name, pstatus->dlci, state);
386 /* same here */
387 }
388 break;
389
390 case SDLA_RET_DLCI_UNKNOWN:
391 printk(KERN_INFO "%s: Received unknown DLCIs:", dev->name);
392 len /= sizeof(short);
393 for(pdlci = data,i=0;i < len;i++,pdlci++)
394 printk(" %i", *pdlci);
395 printk("\n");
396 break;
397
398 case SDLA_RET_TIMEOUT:
399 printk(KERN_ERR "%s: Command timed out!\n", dev->name);
400 break;
401
402 case SDLA_RET_BUF_OVERSIZE:
403 printk(KERN_INFO "%s: Bc/CIR overflow, acceptable size is %i\n", dev->name, len);
404 break;
405
406 case SDLA_RET_BUF_TOO_BIG:
407 printk(KERN_INFO "%s: Buffer size over specified max of %i\n", dev->name, len);
408 break;
409
410 case SDLA_RET_CHANNEL_INACTIVE:
411 case SDLA_RET_DLCI_INACTIVE:
412 case SDLA_RET_CIR_OVERFLOW:
413 case SDLA_RET_NO_BUFS:
414 if (cmd == SDLA_INFORMATION_WRITE)
415 break;
416
417 default:
418 printk(KERN_DEBUG "%s: Cmd 0x%2.2X generated return code 0x%2.2X\n", dev->name, cmd, ret);
419 /* Further processing could be done here */
420 break;
421 }
422 }
423
424 static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags,
425 void *inbuf, short inlen, void *outbuf, short *outlen)
426 {
427 static struct _frad_stat status;
428 struct frad_local *flp;
429 struct sdla_cmd *cmd_buf;
430 unsigned long pflags;
431 unsigned long jiffs;
432 int ret, waiting, len;
433 long window;
434
435 flp = dev->priv;
436 window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
437 cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
438 ret = 0;
439 len = 0;
440 jiffs = jiffies + HZ; /* 1 second is plenty */
441
442 spin_lock_irqsave(&sdla_lock, pflags);
443 SDLA_WINDOW(dev, window);
444 cmd_buf->cmd = cmd;
445 cmd_buf->dlci = dlci;
446 cmd_buf->flags = flags;
447
448 if (inbuf)
449 memcpy(cmd_buf->data, inbuf, inlen);
450
451 cmd_buf->length = inlen;
452
453 cmd_buf->opp_flag = 1;
454 spin_unlock_irqrestore(&sdla_lock, pflags);
455
456 waiting = 1;
457 len = 0;
458 while (waiting && time_before_eq(jiffies, jiffs))
459 {
460 if (waiting++ % 3)
461 {
462 spin_lock_irqsave(&sdla_lock, pflags);
463 SDLA_WINDOW(dev, window);
464 waiting = ((volatile int)(cmd_buf->opp_flag));
465 spin_unlock_irqrestore(&sdla_lock, pflags);
466 }
467 }
468
469 if (!waiting)
470 {
471
472 spin_lock_irqsave(&sdla_lock, pflags);
473 SDLA_WINDOW(dev, window);
474 ret = cmd_buf->retval;
475 len = cmd_buf->length;
476 if (outbuf && outlen)
477 {
478 *outlen = *outlen >= len ? len : *outlen;
479
480 if (*outlen)
481 memcpy(outbuf, cmd_buf->data, *outlen);
482 }
483
484 /* This is a local copy that's used for error handling */
485 if (ret)
486 memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
487
488 spin_unlock_irqrestore(&sdla_lock, pflags);
489 }
490 else
491 ret = SDLA_RET_TIMEOUT;
492
493 if (ret != SDLA_RET_OK)
494 sdla_errors(dev, cmd, dlci, ret, len, &status);
495
496 return(ret);
497 }
498
499 /***********************************************
500 *
501 * these functions are called by the DLCI driver
502 *
503 ***********************************************/
504
505 static int sdla_reconfig(struct net_device *dev);
506
507 static int sdla_activate(struct net_device *slave, struct net_device *master)
508 {
509 struct frad_local *flp;
510 int i;
511
512 flp = slave->priv;
513
514 for(i=0;i<CONFIG_DLCI_MAX;i++)
515 if (flp->master[i] == master)
516 break;
517
518 if (i == CONFIG_DLCI_MAX)
519 return(-ENODEV);
520
521 flp->dlci[i] = abs(flp->dlci[i]);
522
523 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
524 sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
525
526 return(0);
527 }
528
529 static int sdla_deactivate(struct net_device *slave, struct net_device *master)
530 {
531 struct frad_local *flp;
532 int i;
533
534 flp = slave->priv;
535
536 for(i=0;i<CONFIG_DLCI_MAX;i++)
537 if (flp->master[i] == master)
538 break;
539
540 if (i == CONFIG_DLCI_MAX)
541 return(-ENODEV);
542
543 flp->dlci[i] = -abs(flp->dlci[i]);
544
545 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
546 sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
547
548 return(0);
549 }
550
551 static int sdla_assoc(struct net_device *slave, struct net_device *master)
552 {
553 struct frad_local *flp;
554 int i;
555
556 if (master->type != ARPHRD_DLCI)
557 return(-EINVAL);
558
559 flp = slave->priv;
560
561 for(i=0;i<CONFIG_DLCI_MAX;i++)
562 {
563 if (!flp->master[i])
564 break;
565 if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
566 return(-EADDRINUSE);
567 }
568
569 if (i == CONFIG_DLCI_MAX)
570 return(-EMLINK); /* #### Alan: Comments on this ?? */
571
572
573 flp->master[i] = master;
574 flp->dlci[i] = -*(short *)(master->dev_addr);
575 master->mtu = slave->mtu;
576
577 if (netif_running(slave)) {
578 if (flp->config.station == FRAD_STATION_CPE)
579 sdla_reconfig(slave);
580 else
581 sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
582 }
583
584 return(0);
585 }
586
587 static int sdla_deassoc(struct net_device *slave, struct net_device *master)
588 {
589 struct frad_local *flp;
590 int i;
591
592 flp = slave->priv;
593
594 for(i=0;i<CONFIG_DLCI_MAX;i++)
595 if (flp->master[i] == master)
596 break;
597
598 if (i == CONFIG_DLCI_MAX)
599 return(-ENODEV);
600
601 flp->master[i] = NULL;
602 flp->dlci[i] = 0;
603
604
605 if (netif_running(slave)) {
606 if (flp->config.station == FRAD_STATION_CPE)
607 sdla_reconfig(slave);
608 else
609 sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
610 }
611
612 return(0);
613 }
614
615 static int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
616 {
617 struct frad_local *flp;
618 struct dlci_local *dlp;
619 int i;
620 short len, ret;
621
622 flp = slave->priv;
623
624 for(i=0;i<CONFIG_DLCI_MAX;i++)
625 if (flp->master[i] == master)
626 break;
627
628 if (i == CONFIG_DLCI_MAX)
629 return(-ENODEV);
630
631 dlp = master->priv;
632
633 ret = SDLA_RET_OK;
634 len = sizeof(struct dlci_conf);
635 if (netif_running(slave)) {
636 if (get)
637 ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
638 NULL, 0, &dlp->config, &len);
639 else
640 ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
641 &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
642 }
643
644 return(ret == SDLA_RET_OK ? 0 : -EIO);
645 }
646
647 /**************************
648 *
649 * now for the Linux driver
650 *
651 **************************/
652
653 /* NOTE: the DLCI driver deals with freeing the SKB!! */
654 static int sdla_transmit(struct sk_buff *skb, struct net_device *dev)
655 {
656 struct frad_local *flp;
657 int ret, addr, accept, i;
658 short size;
659 unsigned long flags;
660 struct buf_entry *pbuf;
661
662 flp = dev->priv;
663 ret = 0;
664 accept = 1;
665
666 netif_stop_queue(dev);
667
668 /*
669 * stupid GateD insists on setting up the multicast router thru us
670 * and we're ill equipped to handle a non Frame Relay packet at this
671 * time!
672 */
673
674 accept = 1;
675 switch (dev->type)
676 {
677 case ARPHRD_FRAD:
678 if (skb->dev->type != ARPHRD_DLCI)
679 {
680 printk(KERN_WARNING "%s: Non DLCI device, type %i, tried to send on FRAD module.\n", dev->name, skb->dev->type);
681 accept = 0;
682 }
683 break;
684 default:
685 printk(KERN_WARNING "%s: unknown firmware type 0x%4.4X\n", dev->name, dev->type);
686 accept = 0;
687 break;
688 }
689 if (accept)
690 {
691 /* this is frame specific, but till there's a PPP module, it's the default */
692 switch (flp->type)
693 {
694 case SDLA_S502A:
695 case SDLA_S502E:
696 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
697 break;
698 case SDLA_S508:
699 size = sizeof(addr);
700 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
701 if (ret == SDLA_RET_OK)
702 {
703
704 spin_lock_irqsave(&sdla_lock, flags);
705 SDLA_WINDOW(dev, addr);
706 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
707 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
708 SDLA_WINDOW(dev, addr);
709 pbuf->opp_flag = 1;
710 spin_unlock_irqrestore(&sdla_lock, flags);
711 }
712 break;
713 }
714 switch (ret)
715 {
716 case SDLA_RET_OK:
717 flp->stats.tx_packets++;
718 ret = DLCI_RET_OK;
719 break;
720
721 case SDLA_RET_CIR_OVERFLOW:
722 case SDLA_RET_BUF_OVERSIZE:
723 case SDLA_RET_NO_BUFS:
724 flp->stats.tx_dropped++;
725 ret = DLCI_RET_DROP;
726 break;
727
728 default:
729 flp->stats.tx_errors++;
730 ret = DLCI_RET_ERR;
731 break;
732 }
733 }
734 netif_wake_queue(dev);
735 for(i=0;i<CONFIG_DLCI_MAX;i++)
736 {
737 if(flp->master[i]!=NULL)
738 netif_wake_queue(flp->master[i]);
739 }
740 return(ret);
741 }
742
743 static void sdla_receive(struct net_device *dev)
744 {
745 struct net_device *master;
746 struct frad_local *flp;
747 struct dlci_local *dlp;
748 struct sk_buff *skb;
749
750 struct sdla_cmd *cmd;
751 struct buf_info *pbufi;
752 struct buf_entry *pbuf;
753
754 unsigned long flags;
755 int i=0, received, success, addr, buf_base, buf_top;
756 short dlci, len, len2, split;
757
758 flp = dev->priv;
759 success = 1;
760 received = addr = buf_top = buf_base = 0;
761 len = dlci = 0;
762 skb = NULL;
763 master = NULL;
764 cmd = NULL;
765 pbufi = NULL;
766 pbuf = NULL;
767
768 spin_lock_irqsave(&sdla_lock, flags);
769
770 switch (flp->type)
771 {
772 case SDLA_S502A:
773 case SDLA_S502E:
774 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
775 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
776 success = cmd->opp_flag;
777 if (!success)
778 break;
779
780 dlci = cmd->dlci;
781 len = cmd->length;
782 break;
783
784 case SDLA_S508:
785 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
786 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
787 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
788 success = pbuf->opp_flag;
789 if (!success)
790 break;
791
792 buf_top = pbufi->buf_top;
793 buf_base = pbufi->buf_base;
794 dlci = pbuf->dlci;
795 len = pbuf->length;
796 addr = pbuf->buf_addr;
797 break;
798 }
799
800 /* common code, find the DLCI and get the SKB */
801 if (success)
802 {
803 for (i=0;i<CONFIG_DLCI_MAX;i++)
804 if (flp->dlci[i] == dlci)
805 break;
806
807 if (i == CONFIG_DLCI_MAX)
808 {
809 printk(KERN_NOTICE "%s: Received packet from invalid DLCI %i, ignoring.", dev->name, dlci);
810 flp->stats.rx_errors++;
811 success = 0;
812 }
813 }
814
815 if (success)
816 {
817 master = flp->master[i];
818 skb = dev_alloc_skb(len + sizeof(struct frhdr));
819 if (skb == NULL)
820 {
821 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
822 flp->stats.rx_dropped++;
823 success = 0;
824 }
825 else
826 skb_reserve(skb, sizeof(struct frhdr));
827 }
828
829 /* pick up the data */
830 switch (flp->type)
831 {
832 case SDLA_S502A:
833 case SDLA_S502E:
834 if (success)
835 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
836
837 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
838 cmd->opp_flag = 0;
839 break;
840
841 case SDLA_S508:
842 if (success)
843 {
844 /* is this buffer split off the end of the internal ring buffer */
845 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
846 len2 = len - split;
847
848 __sdla_read(dev, addr, skb_put(skb, len2), len2);
849 if (split)
850 __sdla_read(dev, buf_base, skb_put(skb, split), split);
851 }
852
853 /* increment the buffer we're looking at */
854 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
855 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
856 pbuf->opp_flag = 0;
857 break;
858 }
859
860 if (success)
861 {
862 flp->stats.rx_packets++;
863 dlp = master->priv;
864 (*dlp->receive)(skb, master);
865 }
866
867 spin_unlock_irqrestore(&sdla_lock, flags);
868 }
869
870 static irqreturn_t sdla_isr(int irq, void *dev_id)
871 {
872 struct net_device *dev;
873 struct frad_local *flp;
874 char byte;
875
876 dev = dev_id;
877
878 if (dev == NULL)
879 {
880 printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
881 return IRQ_NONE;
882 }
883
884 flp = dev->priv;
885
886 if (!flp->initialized)
887 {
888 printk(KERN_WARNING "%s: irq %d for uninitialized device.\n", dev->name, irq);
889 return IRQ_NONE;
890 }
891
892 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
893 switch (byte)
894 {
895 case SDLA_INTR_RX:
896 sdla_receive(dev);
897 break;
898
899 /* the command will get an error return, which is processed above */
900 case SDLA_INTR_MODEM:
901 case SDLA_INTR_STATUS:
902 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
903 break;
904
905 case SDLA_INTR_TX:
906 case SDLA_INTR_COMPLETE:
907 case SDLA_INTR_TIMER:
908 printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, byte);
909 break;
910 }
911
912 /* the S502E requires a manual acknowledgement of the interrupt */
913 if (flp->type == SDLA_S502E)
914 {
915 flp->state &= ~SDLA_S502E_INTACK;
916 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
917 flp->state |= SDLA_S502E_INTACK;
918 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
919 }
920
921 /* this clears the byte, informing the Z80 we're done */
922 byte = 0;
923 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
924 return IRQ_HANDLED;
925 }
926
927 static void sdla_poll(unsigned long device)
928 {
929 struct net_device *dev;
930 struct frad_local *flp;
931
932 dev = (struct net_device *) device;
933 flp = dev->priv;
934
935 if (sdla_byte(dev, SDLA_502_RCV_BUF))
936 sdla_receive(dev);
937
938 flp->timer.expires = 1;
939 add_timer(&flp->timer);
940 }
941
942 static int sdla_close(struct net_device *dev)
943 {
944 struct frad_local *flp;
945 struct intr_info intr;
946 int len, i;
947 short dlcis[CONFIG_DLCI_MAX];
948
949 flp = dev->priv;
950
951 len = 0;
952 for(i=0;i<CONFIG_DLCI_MAX;i++)
953 if (flp->dlci[i])
954 dlcis[len++] = abs(flp->dlci[i]);
955 len *= 2;
956
957 if (flp->config.station == FRAD_STATION_NODE)
958 {
959 for(i=0;i<CONFIG_DLCI_MAX;i++)
960 if (flp->dlci[i] > 0)
961 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
962 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
963 }
964
965 memset(&intr, 0, sizeof(intr));
966 /* let's start up the reception */
967 switch(flp->type)
968 {
969 case SDLA_S502A:
970 del_timer(&flp->timer);
971 break;
972
973 case SDLA_S502E:
974 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
975 flp->state &= ~SDLA_S502E_INTACK;
976 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
977 break;
978
979 case SDLA_S507:
980 break;
981
982 case SDLA_S508:
983 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
984 flp->state &= ~SDLA_S508_INTEN;
985 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
986 break;
987 }
988
989 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
990
991 netif_stop_queue(dev);
992
993 return(0);
994 }
995
996 struct conf_data {
997 struct frad_conf config;
998 short dlci[CONFIG_DLCI_MAX];
999 };
1000
1001 static int sdla_open(struct net_device *dev)
1002 {
1003 struct frad_local *flp;
1004 struct dlci_local *dlp;
1005 struct conf_data data;
1006 struct intr_info intr;
1007 int len, i;
1008 char byte;
1009
1010 flp = dev->priv;
1011
1012 if (!flp->initialized)
1013 return(-EPERM);
1014
1015 if (!flp->configured)
1016 return(-EPERM);
1017
1018 /* time to send in the configuration */
1019 len = 0;
1020 for(i=0;i<CONFIG_DLCI_MAX;i++)
1021 if (flp->dlci[i])
1022 data.dlci[len++] = abs(flp->dlci[i]);
1023 len *= 2;
1024
1025 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1026 len += sizeof(struct frad_conf);
1027
1028 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1029 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1030
1031 if (flp->type == SDLA_S508)
1032 flp->buffer = 0;
1033
1034 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1035
1036 /* let's start up the reception */
1037 memset(&intr, 0, sizeof(intr));
1038 switch(flp->type)
1039 {
1040 case SDLA_S502A:
1041 flp->timer.expires = 1;
1042 add_timer(&flp->timer);
1043 break;
1044
1045 case SDLA_S502E:
1046 flp->state |= SDLA_S502E_ENABLE;
1047 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1048 flp->state |= SDLA_S502E_INTACK;
1049 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1050 byte = 0;
1051 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1052 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1053 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1054 break;
1055
1056 case SDLA_S507:
1057 break;
1058
1059 case SDLA_S508:
1060 flp->state |= SDLA_S508_INTEN;
1061 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1062 byte = 0;
1063 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1064 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1065 intr.irq = dev->irq;
1066 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1067 break;
1068 }
1069
1070 if (flp->config.station == FRAD_STATION_CPE)
1071 {
1072 byte = SDLA_ICS_STATUS_ENQ;
1073 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1074 }
1075 else
1076 {
1077 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1078 for(i=0;i<CONFIG_DLCI_MAX;i++)
1079 if (flp->dlci[i] > 0)
1080 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1081 }
1082
1083 /* configure any specific DLCI settings */
1084 for(i=0;i<CONFIG_DLCI_MAX;i++)
1085 if (flp->dlci[i])
1086 {
1087 dlp = flp->master[i]->priv;
1088 if (dlp->configured)
1089 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1090 }
1091
1092 netif_start_queue(dev);
1093
1094 return(0);
1095 }
1096
1097 static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
1098 {
1099 struct frad_local *flp;
1100 struct conf_data data;
1101 int i;
1102 short size;
1103
1104 if (dev->type == 0xFFFF)
1105 return(-EUNATCH);
1106
1107 flp = dev->priv;
1108
1109 if (!get)
1110 {
1111 if (netif_running(dev))
1112 return(-EBUSY);
1113
1114 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1115 return -EFAULT;
1116
1117 if (data.config.station & ~FRAD_STATION_NODE)
1118 return(-EINVAL);
1119
1120 if (data.config.flags & ~FRAD_VALID_FLAGS)
1121 return(-EINVAL);
1122
1123 if ((data.config.kbaud < 0) ||
1124 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1125 return(-EINVAL);
1126
1127 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1128 return(-EINVAL);
1129
1130 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1131 return(-EINVAL);
1132
1133 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1134 return(-EINVAL);
1135
1136 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1137 return(-EINVAL);
1138
1139 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1140 return(-EINVAL);
1141
1142 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1143 return(-EINVAL);
1144
1145 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1146 return(-EINVAL);
1147
1148 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1149 flp->config.flags |= SDLA_DIRECT_RECV;
1150
1151 if (flp->type == SDLA_S508)
1152 flp->config.flags |= SDLA_TX70_RX30;
1153
1154 if (dev->mtu != flp->config.mtu)
1155 {
1156 /* this is required to change the MTU */
1157 dev->mtu = flp->config.mtu;
1158 for(i=0;i<CONFIG_DLCI_MAX;i++)
1159 if (flp->master[i])
1160 flp->master[i]->mtu = flp->config.mtu;
1161 }
1162
1163 flp->config.mtu += sizeof(struct frhdr);
1164
1165 /* off to the races! */
1166 if (!flp->configured)
1167 sdla_start(dev);
1168
1169 flp->configured = 1;
1170 }
1171 else
1172 {
1173 /* no sense reading if the CPU isn't started */
1174 if (netif_running(dev))
1175 {
1176 size = sizeof(data);
1177 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1178 return(-EIO);
1179 }
1180 else
1181 if (flp->configured)
1182 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1183 else
1184 memset(&data.config, 0, sizeof(struct frad_conf));
1185
1186 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1187 data.config.flags &= FRAD_VALID_FLAGS;
1188 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1189 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1190 }
1191
1192 return(0);
1193 }
1194
1195 static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
1196 {
1197 struct sdla_mem mem;
1198 char *temp;
1199
1200 if(copy_from_user(&mem, info, sizeof(mem)))
1201 return -EFAULT;
1202
1203 if (read)
1204 {
1205 temp = kmalloc(mem.len, GFP_KERNEL);
1206 if (!temp)
1207 return(-ENOMEM);
1208 memset(temp, 0, mem.len);
1209 sdla_read(dev, mem.addr, temp, mem.len);
1210 if(copy_to_user(mem.data, temp, mem.len))
1211 {
1212 kfree(temp);
1213 return -EFAULT;
1214 }
1215 kfree(temp);
1216 }
1217 else
1218 {
1219 temp = kmalloc(mem.len, GFP_KERNEL);
1220 if (!temp)
1221 return(-ENOMEM);
1222 if(copy_from_user(temp, mem.data, mem.len))
1223 {
1224 kfree(temp);
1225 return -EFAULT;
1226 }
1227 sdla_write(dev, mem.addr, temp, mem.len);
1228 kfree(temp);
1229 }
1230 return(0);
1231 }
1232
1233 static int sdla_reconfig(struct net_device *dev)
1234 {
1235 struct frad_local *flp;
1236 struct conf_data data;
1237 int i, len;
1238
1239 flp = dev->priv;
1240
1241 len = 0;
1242 for(i=0;i<CONFIG_DLCI_MAX;i++)
1243 if (flp->dlci[i])
1244 data.dlci[len++] = flp->dlci[i];
1245 len *= 2;
1246
1247 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1248 len += sizeof(struct frad_conf);
1249
1250 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1251 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1252 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1253
1254 return(0);
1255 }
1256
1257 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1258 {
1259 struct frad_local *flp;
1260
1261 if(!capable(CAP_NET_ADMIN))
1262 return -EPERM;
1263
1264 flp = dev->priv;
1265
1266 if (!flp->initialized)
1267 return(-EINVAL);
1268
1269 switch (cmd)
1270 {
1271 case FRAD_GET_CONF:
1272 case FRAD_SET_CONF:
1273 return(sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF));
1274
1275 case SDLA_IDENTIFY:
1276 ifr->ifr_flags = flp->type;
1277 break;
1278
1279 case SDLA_CPUSPEED:
1280 return(sdla_cpuspeed(dev, ifr));
1281
1282 /* ==========================================================
1283 NOTE: This is rather a useless action right now, as the
1284 current driver does not support protocols other than
1285 FR. However, Sangoma has modules for a number of
1286 other protocols in the works.
1287 ============================================================*/
1288 case SDLA_PROTOCOL:
1289 if (flp->configured)
1290 return(-EALREADY);
1291
1292 switch (ifr->ifr_flags)
1293 {
1294 case ARPHRD_FRAD:
1295 dev->type = ifr->ifr_flags;
1296 break;
1297 default:
1298 return(-ENOPROTOOPT);
1299 }
1300 break;
1301
1302 case SDLA_CLEARMEM:
1303 sdla_clear(dev);
1304 break;
1305
1306 case SDLA_WRITEMEM:
1307 case SDLA_READMEM:
1308 if(!capable(CAP_SYS_RAWIO))
1309 return -EPERM;
1310 return(sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM));
1311
1312 case SDLA_START:
1313 sdla_start(dev);
1314 break;
1315
1316 case SDLA_STOP:
1317 sdla_stop(dev);
1318 break;
1319
1320 default:
1321 return(-EOPNOTSUPP);
1322 }
1323 return(0);
1324 }
1325
1326 static int sdla_change_mtu(struct net_device *dev, int new_mtu)
1327 {
1328 struct frad_local *flp;
1329
1330 flp = dev->priv;
1331
1332 if (netif_running(dev))
1333 return(-EBUSY);
1334
1335 /* for now, you can't change the MTU! */
1336 return(-EOPNOTSUPP);
1337 }
1338
1339 static int sdla_set_config(struct net_device *dev, struct ifmap *map)
1340 {
1341 struct frad_local *flp;
1342 int i;
1343 char byte;
1344 unsigned base;
1345 int err = -EINVAL;
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 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
1360 printk(KERN_WARNING "SDLA: io-port 0x%04lx in use \n", dev->base_addr);
1361 return(-EINVAL);
1362 }
1363 base = map->base_addr;
1364
1365 /* test for card types, S502A, S502E, S507, S508 */
1366 /* these tests shut down the card completely, so clear the state */
1367 flp->type = SDLA_UNKNOWN;
1368 flp->state = 0;
1369
1370 for(i=1;i<SDLA_IO_EXTENTS;i++)
1371 if (inb(base + i) != 0xFF)
1372 break;
1373
1374 if (i == SDLA_IO_EXTENTS) {
1375 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
1376 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
1377 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
1378 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
1379 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1380 flp->type = SDLA_S502E;
1381 goto got_type;
1382 }
1383 }
1384 }
1385
1386 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
1387 if (inb(base + i) != byte)
1388 break;
1389
1390 if (i == SDLA_IO_EXTENTS) {
1391 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1392 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
1393 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
1394 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
1395 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1396 flp->type = SDLA_S507;
1397 goto got_type;
1398 }
1399 }
1400 }
1401
1402 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1403 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
1404 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
1405 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
1406 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1407 flp->type = SDLA_S508;
1408 goto got_type;
1409 }
1410 }
1411
1412 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
1413 if (inb(base + SDLA_S502_STS) == 0x40) {
1414 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1415 if (inb(base + SDLA_S502_STS) == 0x40) {
1416 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
1417 if (inb(base + SDLA_S502_STS) == 0x44) {
1418 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1419 flp->type = SDLA_S502A;
1420 goto got_type;
1421 }
1422 }
1423 }
1424
1425 printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
1426 err = -ENODEV;
1427 goto fail;
1428
1429 got_type:
1430 switch(base) {
1431 case 0x270:
1432 case 0x280:
1433 case 0x380:
1434 case 0x390:
1435 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1436 goto fail;
1437 }
1438
1439 switch (map->irq) {
1440 case 2:
1441 if (flp->type != SDLA_S502E)
1442 goto fail;
1443 break;
1444
1445 case 10:
1446 case 11:
1447 case 12:
1448 case 15:
1449 case 4:
1450 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1451 goto fail;
1452 break;
1453 case 3:
1454 case 5:
1455 case 7:
1456 if (flp->type == SDLA_S502A)
1457 goto fail;
1458 break;
1459
1460 default:
1461 goto fail;
1462 }
1463
1464 err = -EAGAIN;
1465 if (request_irq(dev->irq, &sdla_isr, 0, dev->name, dev))
1466 goto fail;
1467
1468 if (flp->type == SDLA_S507) {
1469 switch(dev->irq) {
1470 case 3:
1471 flp->state = SDLA_S507_IRQ3;
1472 break;
1473 case 4:
1474 flp->state = SDLA_S507_IRQ4;
1475 break;
1476 case 5:
1477 flp->state = SDLA_S507_IRQ5;
1478 break;
1479 case 7:
1480 flp->state = SDLA_S507_IRQ7;
1481 break;
1482 case 10:
1483 flp->state = SDLA_S507_IRQ10;
1484 break;
1485 case 11:
1486 flp->state = SDLA_S507_IRQ11;
1487 break;
1488 case 12:
1489 flp->state = SDLA_S507_IRQ12;
1490 break;
1491 case 15:
1492 flp->state = SDLA_S507_IRQ15;
1493 break;
1494 }
1495 }
1496
1497 for(i=0;i < sizeof(valid_mem) / sizeof (int) ; i++)
1498 if (valid_mem[i] == map->mem_start)
1499 break;
1500
1501 err = -EINVAL;
1502 if (i == sizeof(valid_mem) / sizeof(int))
1503 goto fail2;
1504
1505 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
1506 goto fail2;
1507
1508 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
1509 goto fail2;
1510
1511 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
1512 goto fail2;
1513
1514 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1515 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1516 switch(flp->type) {
1517 case SDLA_S502A:
1518 case SDLA_S502E:
1519 switch (map->mem_start >> 16) {
1520 case 0x0A:
1521 byte |= SDLA_S502_SEG_A;
1522 break;
1523 case 0x0C:
1524 byte |= SDLA_S502_SEG_C;
1525 break;
1526 case 0x0D:
1527 byte |= SDLA_S502_SEG_D;
1528 break;
1529 case 0x0E:
1530 byte |= SDLA_S502_SEG_E;
1531 break;
1532 }
1533 break;
1534 case SDLA_S507:
1535 switch (map->mem_start >> 16) {
1536 case 0x0A:
1537 byte |= SDLA_S507_SEG_A;
1538 break;
1539 case 0x0B:
1540 byte |= SDLA_S507_SEG_B;
1541 break;
1542 case 0x0C:
1543 byte |= SDLA_S507_SEG_C;
1544 break;
1545 case 0x0E:
1546 byte |= SDLA_S507_SEG_E;
1547 break;
1548 }
1549 break;
1550 case SDLA_S508:
1551 switch (map->mem_start >> 16) {
1552 case 0x0A:
1553 byte |= SDLA_S508_SEG_A;
1554 break;
1555 case 0x0C:
1556 byte |= SDLA_S508_SEG_C;
1557 break;
1558 case 0x0D:
1559 byte |= SDLA_S508_SEG_D;
1560 break;
1561 case 0x0E:
1562 byte |= SDLA_S508_SEG_E;
1563 break;
1564 }
1565 break;
1566 }
1567
1568 /* set the memory bits, and enable access */
1569 outb(byte, base + SDLA_REG_PC_WINDOW);
1570
1571 switch(flp->type)
1572 {
1573 case SDLA_S502E:
1574 flp->state = SDLA_S502E_ENABLE;
1575 break;
1576 case SDLA_S507:
1577 flp->state |= SDLA_MEMEN;
1578 break;
1579 case SDLA_S508:
1580 flp->state = SDLA_MEMEN;
1581 break;
1582 }
1583 outb(flp->state, base + SDLA_REG_CONTROL);
1584
1585 dev->irq = map->irq;
1586 dev->base_addr = base;
1587 dev->mem_start = map->mem_start;
1588 dev->mem_end = dev->mem_start + 0x2000;
1589 flp->initialized = 1;
1590 return 0;
1591
1592 fail2:
1593 free_irq(map->irq, dev);
1594 fail:
1595 release_region(base, SDLA_IO_EXTENTS);
1596 return err;
1597 }
1598
1599 static struct net_device_stats *sdla_stats(struct net_device *dev)
1600 {
1601 struct frad_local *flp;
1602 flp = dev->priv;
1603
1604 return(&flp->stats);
1605 }
1606
1607 static void setup_sdla(struct net_device *dev)
1608 {
1609 struct frad_local *flp = dev->priv;
1610
1611 netdev_boot_setup_check(dev);
1612
1613 SET_MODULE_OWNER(dev);
1614 dev->flags = 0;
1615 dev->type = 0xFFFF;
1616 dev->hard_header_len = 0;
1617 dev->addr_len = 0;
1618 dev->mtu = SDLA_MAX_MTU;
1619
1620 dev->open = sdla_open;
1621 dev->stop = sdla_close;
1622 dev->do_ioctl = sdla_ioctl;
1623 dev->set_config = sdla_set_config;
1624 dev->get_stats = sdla_stats;
1625 dev->hard_start_xmit = sdla_transmit;
1626 dev->change_mtu = sdla_change_mtu;
1627
1628 flp->activate = sdla_activate;
1629 flp->deactivate = sdla_deactivate;
1630 flp->assoc = sdla_assoc;
1631 flp->deassoc = sdla_deassoc;
1632 flp->dlci_conf = sdla_dlci_conf;
1633
1634 init_timer(&flp->timer);
1635 flp->timer.expires = 1;
1636 flp->timer.data = (unsigned long) dev;
1637 flp->timer.function = sdla_poll;
1638 }
1639
1640 static struct net_device *sdla;
1641
1642 static int __init init_sdla(void)
1643 {
1644 int err;
1645
1646 printk("%s.\n", version);
1647
1648 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0", setup_sdla);
1649 if (!sdla)
1650 return -ENOMEM;
1651
1652 err = register_netdev(sdla);
1653 if (err)
1654 free_netdev(sdla);
1655
1656 return err;
1657 }
1658
1659 static void __exit exit_sdla(void)
1660 {
1661 struct frad_local *flp = sdla->priv;
1662
1663 unregister_netdev(sdla);
1664 if (flp->initialized) {
1665 free_irq(sdla->irq, sdla);
1666 release_region(sdla->base_addr, SDLA_IO_EXTENTS);
1667 }
1668 del_timer_sync(&flp->timer);
1669 free_netdev(sdla);
1670 }
1671
1672 MODULE_LICENSE("GPL");
1673
1674 module_init(init_sdla);
1675 module_exit(exit_sdla);
Linux kernel - Deliverables
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