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Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-jammy-kernel.git] / drivers / net / wan / sdla.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * SDLA An implementation of a driver for the Sangoma S502/S508 series
4 * multi-protocol PC interface card. Initial offering is with
5 * the DLCI driver, providing Frame Relay support for linux.
6 *
7 * Global definitions for the Frame relay interface.
8 *
9 * Version: @(#)sdla.c 0.30 12 Sep 1996
10 *
11 * Credits: Sangoma Technologies, for the use of 2 cards for an extended
12 * period of time.
13 * David Mandelstam <dm@sangoma.com> for getting me started on
14 * this project, and incentive to complete it.
15 * Gene Kozen <74604.152@compuserve.com> for providing me with
16 * important information about the cards.
17 *
18 * Author: Mike McLagan <mike.mclagan@linux.org>
19 *
20 * Changes:
21 * 0.15 Mike McLagan Improved error handling, packet dropping
22 * 0.20 Mike McLagan New transmit/receive flags for config
23 * If in FR mode, don't accept packets from
24 * non DLCI devices.
25 * 0.25 Mike McLagan Fixed problem with rejecting packets
26 * from non DLCI devices.
27 * 0.30 Mike McLagan Fixed kernel panic when used with modified
28 * ifconfig
29 */
30
31 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32
33 #include <linux/module.h>
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/fcntl.h>
37 #include <linux/interrupt.h>
38 #include <linux/ptrace.h>
39 #include <linux/ioport.h>
40 #include <linux/in.h>
41 #include <linux/slab.h>
42 #include <linux/string.h>
43 #include <linux/timer.h>
44 #include <linux/errno.h>
45 #include <linux/init.h>
46 #include <linux/netdevice.h>
47 #include <linux/skbuff.h>
48 #include <linux/if_arp.h>
49 #include <linux/if_frad.h>
50 #include <linux/sdla.h>
51 #include <linux/bitops.h>
52
53 #include <asm/io.h>
54 #include <asm/dma.h>
55 #include <linux/uaccess.h>
56
57 static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
58
59 static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
60
61 static unsigned int valid_mem[] = {
62 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
63 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
64 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
65 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
66 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
67
68 static DEFINE_SPINLOCK(sdla_lock);
69
70 /*********************************************************
71 *
72 * these are the core routines that access the card itself
73 *
74 *********************************************************/
75
76 #define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
77
78 static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
79 {
80 char *temp;
81 const void *base;
82 int offset, bytes;
83
84 temp = buf;
85 while(len)
86 {
87 offset = addr & SDLA_ADDR_MASK;
88 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
89 base = (const void *) (dev->mem_start + offset);
90
91 SDLA_WINDOW(dev, addr);
92 memcpy(temp, base, bytes);
93
94 addr += bytes;
95 temp += bytes;
96 len -= bytes;
97 }
98 }
99
100 static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
101 {
102 unsigned long flags;
103 spin_lock_irqsave(&sdla_lock, flags);
104 __sdla_read(dev, addr, buf, len);
105 spin_unlock_irqrestore(&sdla_lock, flags);
106 }
107
108 static void __sdla_write(struct net_device *dev, int addr,
109 const void *buf, short len)
110 {
111 const char *temp;
112 void *base;
113 int offset, bytes;
114
115 temp = buf;
116 while(len)
117 {
118 offset = addr & SDLA_ADDR_MASK;
119 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
120 base = (void *) (dev->mem_start + offset);
121
122 SDLA_WINDOW(dev, addr);
123 memcpy(base, temp, bytes);
124
125 addr += bytes;
126 temp += bytes;
127 len -= bytes;
128 }
129 }
130
131 static void sdla_write(struct net_device *dev, int addr,
132 const void *buf, short len)
133 {
134 unsigned long flags;
135
136 spin_lock_irqsave(&sdla_lock, flags);
137 __sdla_write(dev, addr, buf, len);
138 spin_unlock_irqrestore(&sdla_lock, flags);
139 }
140
141
142 static void sdla_clear(struct net_device *dev)
143 {
144 unsigned long flags;
145 char *base;
146 int len, addr, bytes;
147
148 len = 65536;
149 addr = 0;
150 bytes = SDLA_WINDOW_SIZE;
151 base = (void *) dev->mem_start;
152
153 spin_lock_irqsave(&sdla_lock, flags);
154 while(len)
155 {
156 SDLA_WINDOW(dev, addr);
157 memset(base, 0, bytes);
158
159 addr += bytes;
160 len -= bytes;
161 }
162 spin_unlock_irqrestore(&sdla_lock, flags);
163
164 }
165
166 static char sdla_byte(struct net_device *dev, int addr)
167 {
168 unsigned long flags;
169 char byte, *temp;
170
171 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
172
173 spin_lock_irqsave(&sdla_lock, flags);
174 SDLA_WINDOW(dev, addr);
175 byte = *temp;
176 spin_unlock_irqrestore(&sdla_lock, flags);
177
178 return byte;
179 }
180
181 static void sdla_stop(struct net_device *dev)
182 {
183 struct frad_local *flp;
184
185 flp = netdev_priv(dev);
186 switch(flp->type)
187 {
188 case SDLA_S502A:
189 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
190 flp->state = SDLA_HALT;
191 break;
192 case SDLA_S502E:
193 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
194 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
195 flp->state = SDLA_S502E_ENABLE;
196 break;
197 case SDLA_S507:
198 flp->state &= ~SDLA_CPUEN;
199 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
200 break;
201 case SDLA_S508:
202 flp->state &= ~SDLA_CPUEN;
203 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
204 break;
205 }
206 }
207
208 static void sdla_start(struct net_device *dev)
209 {
210 struct frad_local *flp;
211
212 flp = netdev_priv(dev);
213 switch(flp->type)
214 {
215 case SDLA_S502A:
216 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
217 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
218 flp->state = SDLA_S502A_START;
219 break;
220 case SDLA_S502E:
221 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
222 outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
223 flp->state = 0;
224 break;
225 case SDLA_S507:
226 flp->state |= SDLA_CPUEN;
227 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
228 break;
229 case SDLA_S508:
230 flp->state |= SDLA_CPUEN;
231 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
232 break;
233 }
234 }
235
236 /****************************************************
237 *
238 * this is used for the S502A/E cards to determine
239 * the speed of the onboard CPU. Calibration is
240 * necessary for the Frame Relay code uploaded
241 * later. Incorrect results cause timing problems
242 * with link checks & status messages
243 *
244 ***************************************************/
245
246 static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
247 {
248 unsigned long start, done, now;
249 char resp, *temp;
250
251 start = now = jiffies;
252 done = jiffies + jiffs;
253
254 temp = (void *)dev->mem_start;
255 temp += z80_addr & SDLA_ADDR_MASK;
256
257 resp = ~resp1;
258 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
259 {
260 if (jiffies != now)
261 {
262 SDLA_WINDOW(dev, z80_addr);
263 now = jiffies;
264 resp = *temp;
265 }
266 }
267 return time_before(jiffies, done) ? jiffies - start : -1;
268 }
269
270 /* constants for Z80 CPU speed */
271 #define Z80_READY '1' /* Z80 is ready to begin */
272 #define LOADER_READY '2' /* driver is ready to begin */
273 #define Z80_SCC_OK '3' /* SCC is on board */
274 #define Z80_SCC_BAD '4' /* SCC was not found */
275
276 static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
277 {
278 int jiffs;
279 char data;
280
281 sdla_start(dev);
282 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
283 return -EIO;
284
285 data = LOADER_READY;
286 sdla_write(dev, 0, &data, 1);
287
288 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
289 return -EIO;
290
291 sdla_stop(dev);
292 sdla_read(dev, 0, &data, 1);
293
294 if (data == Z80_SCC_BAD)
295 {
296 printk("%s: SCC bad\n", dev->name);
297 return -EIO;
298 }
299
300 if (data != Z80_SCC_OK)
301 return -EINVAL;
302
303 if (jiffs < 165)
304 ifr->ifr_mtu = SDLA_CPU_16M;
305 else if (jiffs < 220)
306 ifr->ifr_mtu = SDLA_CPU_10M;
307 else if (jiffs < 258)
308 ifr->ifr_mtu = SDLA_CPU_8M;
309 else if (jiffs < 357)
310 ifr->ifr_mtu = SDLA_CPU_7M;
311 else if (jiffs < 467)
312 ifr->ifr_mtu = SDLA_CPU_5M;
313 else
314 ifr->ifr_mtu = SDLA_CPU_3M;
315
316 return 0;
317 }
318
319 /************************************************
320 *
321 * Direct interaction with the Frame Relay code
322 * starts here.
323 *
324 ************************************************/
325
326 struct _dlci_stat
327 {
328 short dlci;
329 char flags;
330 } __packed;
331
332 struct _frad_stat
333 {
334 char flags;
335 struct _dlci_stat dlcis[SDLA_MAX_DLCI];
336 };
337
338 static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
339 {
340 struct _dlci_stat *pstatus;
341 short *pdlci;
342 int i;
343 char *state, line[30];
344
345 switch (ret)
346 {
347 case SDLA_RET_MODEM:
348 state = data;
349 if (*state & SDLA_MODEM_DCD_LOW)
350 netdev_info(dev, "Modem DCD unexpectedly low!\n");
351 if (*state & SDLA_MODEM_CTS_LOW)
352 netdev_info(dev, "Modem CTS unexpectedly low!\n");
353 /* I should probably do something about this! */
354 break;
355
356 case SDLA_RET_CHANNEL_OFF:
357 netdev_info(dev, "Channel became inoperative!\n");
358 /* same here */
359 break;
360
361 case SDLA_RET_CHANNEL_ON:
362 netdev_info(dev, "Channel became operative!\n");
363 /* same here */
364 break;
365
366 case SDLA_RET_DLCI_STATUS:
367 netdev_info(dev, "Status change reported by Access Node\n");
368 len /= sizeof(struct _dlci_stat);
369 for(pstatus = data, i=0;i < len;i++,pstatus++)
370 {
371 if (pstatus->flags & SDLA_DLCI_NEW)
372 state = "new";
373 else if (pstatus->flags & SDLA_DLCI_DELETED)
374 state = "deleted";
375 else if (pstatus->flags & SDLA_DLCI_ACTIVE)
376 state = "active";
377 else
378 {
379 sprintf(line, "unknown status: %02X", pstatus->flags);
380 state = line;
381 }
382 netdev_info(dev, "DLCI %i: %s\n",
383 pstatus->dlci, state);
384 /* same here */
385 }
386 break;
387
388 case SDLA_RET_DLCI_UNKNOWN:
389 netdev_info(dev, "Received unknown DLCIs:");
390 len /= sizeof(short);
391 for(pdlci = data,i=0;i < len;i++,pdlci++)
392 pr_cont(" %i", *pdlci);
393 pr_cont("\n");
394 break;
395
396 case SDLA_RET_TIMEOUT:
397 netdev_err(dev, "Command timed out!\n");
398 break;
399
400 case SDLA_RET_BUF_OVERSIZE:
401 netdev_info(dev, "Bc/CIR overflow, acceptable size is %i\n",
402 len);
403 break;
404
405 case SDLA_RET_BUF_TOO_BIG:
406 netdev_info(dev, "Buffer size over specified max of %i\n",
407 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 netdev_dbg(dev, "Cmd 0x%02X generated return code 0x%02X\n",
419 cmd, ret);
420 /* Further processing could be done here */
421 break;
422 }
423 }
424
425 static 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 = netdev_priv(dev);
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
506 static int sdla_reconfig(struct net_device *dev);
507
508 static int sdla_activate(struct net_device *slave, struct net_device *master)
509 {
510 struct frad_local *flp;
511 int i;
512
513 flp = netdev_priv(slave);
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
530 static int sdla_deactivate(struct net_device *slave, struct net_device *master)
531 {
532 struct frad_local *flp;
533 int i;
534
535 flp = netdev_priv(slave);
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
552 static int 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 = netdev_priv(slave);
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
588 static int sdla_deassoc(struct net_device *slave, struct net_device *master)
589 {
590 struct frad_local *flp;
591 int i;
592
593 flp = netdev_priv(slave);
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
616 static int 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 = netdev_priv(slave);
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 = netdev_priv(master);
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!! */
655 static netdev_tx_t sdla_transmit(struct sk_buff *skb,
656 struct net_device *dev)
657 {
658 struct frad_local *flp;
659 int ret, addr, accept, i;
660 short size;
661 unsigned long flags;
662 struct buf_entry *pbuf;
663
664 flp = netdev_priv(dev);
665 ret = 0;
666 accept = 1;
667
668 netif_stop_queue(dev);
669
670 /*
671 * stupid GateD insists on setting up the multicast router thru us
672 * and we're ill equipped to handle a non Frame Relay packet at this
673 * time!
674 */
675
676 accept = 1;
677 switch (dev->type)
678 {
679 case ARPHRD_FRAD:
680 if (skb->dev->type != ARPHRD_DLCI)
681 {
682 netdev_warn(dev, "Non DLCI device, type %i, tried to send on FRAD module\n",
683 skb->dev->type);
684 accept = 0;
685 }
686 break;
687 default:
688 netdev_warn(dev, "unknown firmware type 0x%04X\n",
689 dev->type);
690 accept = 0;
691 break;
692 }
693 if (accept)
694 {
695 /* this is frame specific, but till there's a PPP module, it's the default */
696 switch (flp->type)
697 {
698 case SDLA_S502A:
699 case SDLA_S502E:
700 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
701 break;
702 case SDLA_S508:
703 size = sizeof(addr);
704 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
705 if (ret == SDLA_RET_OK)
706 {
707
708 spin_lock_irqsave(&sdla_lock, flags);
709 SDLA_WINDOW(dev, addr);
710 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
711 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
712 SDLA_WINDOW(dev, addr);
713 pbuf->opp_flag = 1;
714 spin_unlock_irqrestore(&sdla_lock, flags);
715 }
716 break;
717 }
718
719 switch (ret)
720 {
721 case SDLA_RET_OK:
722 dev->stats.tx_packets++;
723 break;
724
725 case SDLA_RET_CIR_OVERFLOW:
726 case SDLA_RET_BUF_OVERSIZE:
727 case SDLA_RET_NO_BUFS:
728 dev->stats.tx_dropped++;
729 break;
730
731 default:
732 dev->stats.tx_errors++;
733 break;
734 }
735 }
736 netif_wake_queue(dev);
737 for(i=0;i<CONFIG_DLCI_MAX;i++)
738 {
739 if(flp->master[i]!=NULL)
740 netif_wake_queue(flp->master[i]);
741 }
742
743 dev_kfree_skb(skb);
744 return NETDEV_TX_OK;
745 }
746
747 static void sdla_receive(struct net_device *dev)
748 {
749 struct net_device *master;
750 struct frad_local *flp;
751 struct dlci_local *dlp;
752 struct sk_buff *skb;
753
754 struct sdla_cmd *cmd;
755 struct buf_info *pbufi;
756 struct buf_entry *pbuf;
757
758 unsigned long flags;
759 int i=0, received, success, addr, buf_base, buf_top;
760 short dlci, len, len2, split;
761
762 flp = netdev_priv(dev);
763 success = 1;
764 received = addr = buf_top = buf_base = 0;
765 len = dlci = 0;
766 skb = NULL;
767 master = NULL;
768 cmd = NULL;
769 pbufi = NULL;
770 pbuf = NULL;
771
772 spin_lock_irqsave(&sdla_lock, flags);
773
774 switch (flp->type)
775 {
776 case SDLA_S502A:
777 case SDLA_S502E:
778 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
779 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
780 success = cmd->opp_flag;
781 if (!success)
782 break;
783
784 dlci = cmd->dlci;
785 len = cmd->length;
786 break;
787
788 case SDLA_S508:
789 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
790 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
791 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
792 success = pbuf->opp_flag;
793 if (!success)
794 break;
795
796 buf_top = pbufi->buf_top;
797 buf_base = pbufi->buf_base;
798 dlci = pbuf->dlci;
799 len = pbuf->length;
800 addr = pbuf->buf_addr;
801 break;
802 }
803
804 /* common code, find the DLCI and get the SKB */
805 if (success)
806 {
807 for (i=0;i<CONFIG_DLCI_MAX;i++)
808 if (flp->dlci[i] == dlci)
809 break;
810
811 if (i == CONFIG_DLCI_MAX)
812 {
813 netdev_notice(dev, "Received packet from invalid DLCI %i, ignoring\n",
814 dlci);
815 dev->stats.rx_errors++;
816 success = 0;
817 }
818 }
819
820 if (success)
821 {
822 master = flp->master[i];
823 skb = dev_alloc_skb(len + sizeof(struct frhdr));
824 if (skb == NULL)
825 {
826 netdev_notice(dev, "Memory squeeze, dropping packet\n");
827 dev->stats.rx_dropped++;
828 success = 0;
829 }
830 else
831 skb_reserve(skb, sizeof(struct frhdr));
832 }
833
834 /* pick up the data */
835 switch (flp->type)
836 {
837 case SDLA_S502A:
838 case SDLA_S502E:
839 if (success)
840 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
841
842 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
843 cmd->opp_flag = 0;
844 break;
845
846 case SDLA_S508:
847 if (success)
848 {
849 /* is this buffer split off the end of the internal ring buffer */
850 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
851 len2 = len - split;
852
853 __sdla_read(dev, addr, skb_put(skb, len2), len2);
854 if (split)
855 __sdla_read(dev, buf_base, skb_put(skb, split), split);
856 }
857
858 /* increment the buffer we're looking at */
859 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
860 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
861 pbuf->opp_flag = 0;
862 break;
863 }
864
865 if (success)
866 {
867 dev->stats.rx_packets++;
868 dlp = netdev_priv(master);
869 (*dlp->receive)(skb, master);
870 }
871
872 spin_unlock_irqrestore(&sdla_lock, flags);
873 }
874
875 static irqreturn_t sdla_isr(int dummy, void *dev_id)
876 {
877 struct net_device *dev;
878 struct frad_local *flp;
879 char byte;
880
881 dev = dev_id;
882
883 flp = netdev_priv(dev);
884
885 if (!flp->initialized)
886 {
887 netdev_warn(dev, "irq %d for uninitialized device\n", dev->irq);
888 return IRQ_NONE;
889 }
890
891 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
892 switch (byte)
893 {
894 case SDLA_INTR_RX:
895 sdla_receive(dev);
896 break;
897
898 /* the command will get an error return, which is processed above */
899 case SDLA_INTR_MODEM:
900 case SDLA_INTR_STATUS:
901 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
902 break;
903
904 case SDLA_INTR_TX:
905 case SDLA_INTR_COMPLETE:
906 case SDLA_INTR_TIMER:
907 netdev_warn(dev, "invalid irq flag 0x%02X\n", byte);
908 break;
909 }
910
911 /* the S502E requires a manual acknowledgement of the interrupt */
912 if (flp->type == SDLA_S502E)
913 {
914 flp->state &= ~SDLA_S502E_INTACK;
915 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
916 flp->state |= SDLA_S502E_INTACK;
917 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
918 }
919
920 /* this clears the byte, informing the Z80 we're done */
921 byte = 0;
922 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
923 return IRQ_HANDLED;
924 }
925
926 static void sdla_poll(struct timer_list *t)
927 {
928 struct frad_local *flp = from_timer(flp, t, timer);
929 struct net_device *dev = flp->dev;
930
931 if (sdla_byte(dev, SDLA_502_RCV_BUF))
932 sdla_receive(dev);
933
934 flp->timer.expires = 1;
935 add_timer(&flp->timer);
936 }
937
938 static int sdla_close(struct net_device *dev)
939 {
940 struct frad_local *flp;
941 struct intr_info intr;
942 int len, i;
943 short dlcis[CONFIG_DLCI_MAX];
944
945 flp = netdev_priv(dev);
946
947 len = 0;
948 for(i=0;i<CONFIG_DLCI_MAX;i++)
949 if (flp->dlci[i])
950 dlcis[len++] = abs(flp->dlci[i]);
951 len *= 2;
952
953 if (flp->config.station == FRAD_STATION_NODE)
954 {
955 for(i=0;i<CONFIG_DLCI_MAX;i++)
956 if (flp->dlci[i] > 0)
957 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
958 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
959 }
960
961 memset(&intr, 0, sizeof(intr));
962 /* let's start up the reception */
963 switch(flp->type)
964 {
965 case SDLA_S502A:
966 del_timer(&flp->timer);
967 break;
968
969 case SDLA_S502E:
970 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
971 flp->state &= ~SDLA_S502E_INTACK;
972 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
973 break;
974
975 case SDLA_S507:
976 break;
977
978 case SDLA_S508:
979 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
980 flp->state &= ~SDLA_S508_INTEN;
981 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
982 break;
983 }
984
985 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
986
987 netif_stop_queue(dev);
988
989 return 0;
990 }
991
992 struct conf_data {
993 struct frad_conf config;
994 short dlci[CONFIG_DLCI_MAX];
995 };
996
997 static int sdla_open(struct net_device *dev)
998 {
999 struct frad_local *flp;
1000 struct dlci_local *dlp;
1001 struct conf_data data;
1002 struct intr_info intr;
1003 int len, i;
1004 char byte;
1005
1006 flp = netdev_priv(dev);
1007
1008 if (!flp->initialized)
1009 return -EPERM;
1010
1011 if (!flp->configured)
1012 return -EPERM;
1013
1014 /* time to send in the configuration */
1015 len = 0;
1016 for(i=0;i<CONFIG_DLCI_MAX;i++)
1017 if (flp->dlci[i])
1018 data.dlci[len++] = abs(flp->dlci[i]);
1019 len *= 2;
1020
1021 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1022 len += sizeof(struct frad_conf);
1023
1024 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1025 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1026
1027 if (flp->type == SDLA_S508)
1028 flp->buffer = 0;
1029
1030 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1031
1032 /* let's start up the reception */
1033 memset(&intr, 0, sizeof(intr));
1034 switch(flp->type)
1035 {
1036 case SDLA_S502A:
1037 flp->timer.expires = 1;
1038 add_timer(&flp->timer);
1039 break;
1040
1041 case SDLA_S502E:
1042 flp->state |= SDLA_S502E_ENABLE;
1043 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1044 flp->state |= SDLA_S502E_INTACK;
1045 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1046 byte = 0;
1047 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1048 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1049 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1050 break;
1051
1052 case SDLA_S507:
1053 break;
1054
1055 case SDLA_S508:
1056 flp->state |= SDLA_S508_INTEN;
1057 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1058 byte = 0;
1059 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1060 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1061 intr.irq = dev->irq;
1062 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1063 break;
1064 }
1065
1066 if (flp->config.station == FRAD_STATION_CPE)
1067 {
1068 byte = SDLA_ICS_STATUS_ENQ;
1069 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1070 }
1071 else
1072 {
1073 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1074 for(i=0;i<CONFIG_DLCI_MAX;i++)
1075 if (flp->dlci[i] > 0)
1076 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1077 }
1078
1079 /* configure any specific DLCI settings */
1080 for(i=0;i<CONFIG_DLCI_MAX;i++)
1081 if (flp->dlci[i])
1082 {
1083 dlp = netdev_priv(flp->master[i]);
1084 if (dlp->configured)
1085 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1086 }
1087
1088 netif_start_queue(dev);
1089
1090 return 0;
1091 }
1092
1093 static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
1094 {
1095 struct frad_local *flp;
1096 struct conf_data data;
1097 int i;
1098 short size;
1099
1100 if (dev->type == 0xFFFF)
1101 return -EUNATCH;
1102
1103 flp = netdev_priv(dev);
1104
1105 if (!get)
1106 {
1107 if (netif_running(dev))
1108 return -EBUSY;
1109
1110 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1111 return -EFAULT;
1112
1113 if (data.config.station & ~FRAD_STATION_NODE)
1114 return -EINVAL;
1115
1116 if (data.config.flags & ~FRAD_VALID_FLAGS)
1117 return -EINVAL;
1118
1119 if ((data.config.kbaud < 0) ||
1120 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1121 return -EINVAL;
1122
1123 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1124 return -EINVAL;
1125
1126 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1127 return -EINVAL;
1128
1129 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1130 return -EINVAL;
1131
1132 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1133 return -EINVAL;
1134
1135 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1136 return -EINVAL;
1137
1138 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1139 return -EINVAL;
1140
1141 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1142 return -EINVAL;
1143
1144 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1145 flp->config.flags |= SDLA_DIRECT_RECV;
1146
1147 if (flp->type == SDLA_S508)
1148 flp->config.flags |= SDLA_TX70_RX30;
1149
1150 if (dev->mtu != flp->config.mtu)
1151 {
1152 /* this is required to change the MTU */
1153 dev->mtu = flp->config.mtu;
1154 for(i=0;i<CONFIG_DLCI_MAX;i++)
1155 if (flp->master[i])
1156 flp->master[i]->mtu = flp->config.mtu;
1157 }
1158
1159 flp->config.mtu += sizeof(struct frhdr);
1160
1161 /* off to the races! */
1162 if (!flp->configured)
1163 sdla_start(dev);
1164
1165 flp->configured = 1;
1166 }
1167 else
1168 {
1169 /* no sense reading if the CPU isn't started */
1170 if (netif_running(dev))
1171 {
1172 size = sizeof(data);
1173 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1174 return -EIO;
1175 }
1176 else
1177 if (flp->configured)
1178 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1179 else
1180 memset(&data.config, 0, sizeof(struct frad_conf));
1181
1182 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1183 data.config.flags &= FRAD_VALID_FLAGS;
1184 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1185 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1186 }
1187
1188 return 0;
1189 }
1190
1191 static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
1192 {
1193 struct sdla_mem mem;
1194 char *temp;
1195
1196 if(copy_from_user(&mem, info, sizeof(mem)))
1197 return -EFAULT;
1198
1199 if (read)
1200 {
1201 temp = kzalloc(mem.len, GFP_KERNEL);
1202 if (!temp)
1203 return -ENOMEM;
1204 sdla_read(dev, mem.addr, temp, mem.len);
1205 if(copy_to_user(mem.data, temp, mem.len))
1206 {
1207 kfree(temp);
1208 return -EFAULT;
1209 }
1210 kfree(temp);
1211 }
1212 else
1213 {
1214 temp = memdup_user(mem.data, mem.len);
1215 if (IS_ERR(temp))
1216 return PTR_ERR(temp);
1217 sdla_write(dev, mem.addr, temp, mem.len);
1218 kfree(temp);
1219 }
1220 return 0;
1221 }
1222
1223 static int sdla_reconfig(struct net_device *dev)
1224 {
1225 struct frad_local *flp;
1226 struct conf_data data;
1227 int i, len;
1228
1229 flp = netdev_priv(dev);
1230
1231 len = 0;
1232 for(i=0;i<CONFIG_DLCI_MAX;i++)
1233 if (flp->dlci[i])
1234 data.dlci[len++] = flp->dlci[i];
1235 len *= 2;
1236
1237 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1238 len += sizeof(struct frad_conf);
1239
1240 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1241 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1242 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1243
1244 return 0;
1245 }
1246
1247 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1248 {
1249 struct frad_local *flp;
1250
1251 if(!capable(CAP_NET_ADMIN))
1252 return -EPERM;
1253
1254 flp = netdev_priv(dev);
1255
1256 if (!flp->initialized)
1257 return -EINVAL;
1258
1259 switch (cmd)
1260 {
1261 case FRAD_GET_CONF:
1262 case FRAD_SET_CONF:
1263 return sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF);
1264
1265 case SDLA_IDENTIFY:
1266 ifr->ifr_flags = flp->type;
1267 break;
1268
1269 case SDLA_CPUSPEED:
1270 return sdla_cpuspeed(dev, ifr);
1271
1272 /* ==========================================================
1273 NOTE: This is rather a useless action right now, as the
1274 current driver does not support protocols other than
1275 FR. However, Sangoma has modules for a number of
1276 other protocols in the works.
1277 ============================================================*/
1278 case SDLA_PROTOCOL:
1279 if (flp->configured)
1280 return -EALREADY;
1281
1282 switch (ifr->ifr_flags)
1283 {
1284 case ARPHRD_FRAD:
1285 dev->type = ifr->ifr_flags;
1286 break;
1287 default:
1288 return -ENOPROTOOPT;
1289 }
1290 break;
1291
1292 case SDLA_CLEARMEM:
1293 sdla_clear(dev);
1294 break;
1295
1296 case SDLA_WRITEMEM:
1297 case SDLA_READMEM:
1298 if(!capable(CAP_SYS_RAWIO))
1299 return -EPERM;
1300 return sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM);
1301
1302 case SDLA_START:
1303 sdla_start(dev);
1304 break;
1305
1306 case SDLA_STOP:
1307 sdla_stop(dev);
1308 break;
1309
1310 default:
1311 return -EOPNOTSUPP;
1312 }
1313 return 0;
1314 }
1315
1316 static int sdla_change_mtu(struct net_device *dev, int new_mtu)
1317 {
1318 if (netif_running(dev))
1319 return -EBUSY;
1320
1321 /* for now, you can't change the MTU! */
1322 return -EOPNOTSUPP;
1323 }
1324
1325 static int sdla_set_config(struct net_device *dev, struct ifmap *map)
1326 {
1327 struct frad_local *flp;
1328 int i;
1329 char byte;
1330 unsigned base;
1331 int err = -EINVAL;
1332
1333 flp = netdev_priv(dev);
1334
1335 if (flp->initialized)
1336 return -EINVAL;
1337
1338 for(i=0; i < ARRAY_SIZE(valid_port); i++)
1339 if (valid_port[i] == map->base_addr)
1340 break;
1341
1342 if (i == ARRAY_SIZE(valid_port))
1343 return -EINVAL;
1344
1345 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
1346 pr_warn("io-port 0x%04lx in use\n", dev->base_addr);
1347 return -EINVAL;
1348 }
1349 base = map->base_addr;
1350
1351 /* test for card types, S502A, S502E, S507, S508 */
1352 /* these tests shut down the card completely, so clear the state */
1353 flp->type = SDLA_UNKNOWN;
1354 flp->state = 0;
1355
1356 for(i=1;i<SDLA_IO_EXTENTS;i++)
1357 if (inb(base + i) != 0xFF)
1358 break;
1359
1360 if (i == SDLA_IO_EXTENTS) {
1361 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
1362 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
1363 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
1364 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
1365 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1366 flp->type = SDLA_S502E;
1367 goto got_type;
1368 }
1369 }
1370 }
1371
1372 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
1373 if (inb(base + i) != byte)
1374 break;
1375
1376 if (i == SDLA_IO_EXTENTS) {
1377 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1378 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
1379 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
1380 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
1381 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1382 flp->type = SDLA_S507;
1383 goto got_type;
1384 }
1385 }
1386 }
1387
1388 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1389 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
1390 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
1391 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
1392 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1393 flp->type = SDLA_S508;
1394 goto got_type;
1395 }
1396 }
1397
1398 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
1399 if (inb(base + SDLA_S502_STS) == 0x40) {
1400 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1401 if (inb(base + SDLA_S502_STS) == 0x40) {
1402 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
1403 if (inb(base + SDLA_S502_STS) == 0x44) {
1404 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1405 flp->type = SDLA_S502A;
1406 goto got_type;
1407 }
1408 }
1409 }
1410
1411 netdev_notice(dev, "Unknown card type\n");
1412 err = -ENODEV;
1413 goto fail;
1414
1415 got_type:
1416 switch(base) {
1417 case 0x270:
1418 case 0x280:
1419 case 0x380:
1420 case 0x390:
1421 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1422 goto fail;
1423 }
1424
1425 switch (map->irq) {
1426 case 2:
1427 if (flp->type != SDLA_S502E)
1428 goto fail;
1429 break;
1430
1431 case 10:
1432 case 11:
1433 case 12:
1434 case 15:
1435 case 4:
1436 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1437 goto fail;
1438 break;
1439 case 3:
1440 case 5:
1441 case 7:
1442 if (flp->type == SDLA_S502A)
1443 goto fail;
1444 break;
1445
1446 default:
1447 goto fail;
1448 }
1449
1450 err = -EAGAIN;
1451 if (request_irq(dev->irq, sdla_isr, 0, dev->name, dev))
1452 goto fail;
1453
1454 if (flp->type == SDLA_S507) {
1455 switch(dev->irq) {
1456 case 3:
1457 flp->state = SDLA_S507_IRQ3;
1458 break;
1459 case 4:
1460 flp->state = SDLA_S507_IRQ4;
1461 break;
1462 case 5:
1463 flp->state = SDLA_S507_IRQ5;
1464 break;
1465 case 7:
1466 flp->state = SDLA_S507_IRQ7;
1467 break;
1468 case 10:
1469 flp->state = SDLA_S507_IRQ10;
1470 break;
1471 case 11:
1472 flp->state = SDLA_S507_IRQ11;
1473 break;
1474 case 12:
1475 flp->state = SDLA_S507_IRQ12;
1476 break;
1477 case 15:
1478 flp->state = SDLA_S507_IRQ15;
1479 break;
1480 }
1481 }
1482
1483 for(i=0; i < ARRAY_SIZE(valid_mem); i++)
1484 if (valid_mem[i] == map->mem_start)
1485 break;
1486
1487 err = -EINVAL;
1488 if (i == ARRAY_SIZE(valid_mem))
1489 goto fail2;
1490
1491 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
1492 goto fail2;
1493
1494 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
1495 goto fail2;
1496
1497 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
1498 goto fail2;
1499
1500 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1501 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1502 switch(flp->type) {
1503 case SDLA_S502A:
1504 case SDLA_S502E:
1505 switch (map->mem_start >> 16) {
1506 case 0x0A:
1507 byte |= SDLA_S502_SEG_A;
1508 break;
1509 case 0x0C:
1510 byte |= SDLA_S502_SEG_C;
1511 break;
1512 case 0x0D:
1513 byte |= SDLA_S502_SEG_D;
1514 break;
1515 case 0x0E:
1516 byte |= SDLA_S502_SEG_E;
1517 break;
1518 }
1519 break;
1520 case SDLA_S507:
1521 switch (map->mem_start >> 16) {
1522 case 0x0A:
1523 byte |= SDLA_S507_SEG_A;
1524 break;
1525 case 0x0B:
1526 byte |= SDLA_S507_SEG_B;
1527 break;
1528 case 0x0C:
1529 byte |= SDLA_S507_SEG_C;
1530 break;
1531 case 0x0E:
1532 byte |= SDLA_S507_SEG_E;
1533 break;
1534 }
1535 break;
1536 case SDLA_S508:
1537 switch (map->mem_start >> 16) {
1538 case 0x0A:
1539 byte |= SDLA_S508_SEG_A;
1540 break;
1541 case 0x0C:
1542 byte |= SDLA_S508_SEG_C;
1543 break;
1544 case 0x0D:
1545 byte |= SDLA_S508_SEG_D;
1546 break;
1547 case 0x0E:
1548 byte |= SDLA_S508_SEG_E;
1549 break;
1550 }
1551 break;
1552 }
1553
1554 /* set the memory bits, and enable access */
1555 outb(byte, base + SDLA_REG_PC_WINDOW);
1556
1557 switch(flp->type)
1558 {
1559 case SDLA_S502E:
1560 flp->state = SDLA_S502E_ENABLE;
1561 break;
1562 case SDLA_S507:
1563 flp->state |= SDLA_MEMEN;
1564 break;
1565 case SDLA_S508:
1566 flp->state = SDLA_MEMEN;
1567 break;
1568 }
1569 outb(flp->state, base + SDLA_REG_CONTROL);
1570
1571 dev->irq = map->irq;
1572 dev->base_addr = base;
1573 dev->mem_start = map->mem_start;
1574 dev->mem_end = dev->mem_start + 0x2000;
1575 flp->initialized = 1;
1576 return 0;
1577
1578 fail2:
1579 free_irq(map->irq, dev);
1580 fail:
1581 release_region(base, SDLA_IO_EXTENTS);
1582 return err;
1583 }
1584
1585 static const struct net_device_ops sdla_netdev_ops = {
1586 .ndo_open = sdla_open,
1587 .ndo_stop = sdla_close,
1588 .ndo_do_ioctl = sdla_ioctl,
1589 .ndo_set_config = sdla_set_config,
1590 .ndo_start_xmit = sdla_transmit,
1591 .ndo_change_mtu = sdla_change_mtu,
1592 };
1593
1594 static void setup_sdla(struct net_device *dev)
1595 {
1596 struct frad_local *flp = netdev_priv(dev);
1597
1598 netdev_boot_setup_check(dev);
1599
1600 dev->netdev_ops = &sdla_netdev_ops;
1601 dev->flags = 0;
1602 dev->type = 0xFFFF;
1603 dev->hard_header_len = 0;
1604 dev->addr_len = 0;
1605 dev->mtu = SDLA_MAX_MTU;
1606
1607 flp->activate = sdla_activate;
1608 flp->deactivate = sdla_deactivate;
1609 flp->assoc = sdla_assoc;
1610 flp->deassoc = sdla_deassoc;
1611 flp->dlci_conf = sdla_dlci_conf;
1612 flp->dev = dev;
1613
1614 timer_setup(&flp->timer, sdla_poll, 0);
1615 flp->timer.expires = 1;
1616 }
1617
1618 static struct net_device *sdla;
1619
1620 static int __init init_sdla(void)
1621 {
1622 int err;
1623
1624 printk("%s.\n", version);
1625
1626 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0",
1627 NET_NAME_UNKNOWN, setup_sdla);
1628 if (!sdla)
1629 return -ENOMEM;
1630
1631 err = register_netdev(sdla);
1632 if (err)
1633 free_netdev(sdla);
1634
1635 return err;
1636 }
1637
1638 static void __exit exit_sdla(void)
1639 {
1640 struct frad_local *flp = netdev_priv(sdla);
1641
1642 unregister_netdev(sdla);
1643 if (flp->initialized) {
1644 free_irq(sdla->irq, sdla);
1645 release_region(sdla->base_addr, SDLA_IO_EXTENTS);
1646 }
1647 del_timer_sync(&flp->timer);
1648 free_netdev(sdla);
1649 }
1650
1651 MODULE_LICENSE("GPL");
1652
1653 module_init(init_sdla);
1654 module_exit(exit_sdla);
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