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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
36
37 #include <linux/module.h>
38 #include <linux/kernel.h>
39 #include <linux/types.h>
40 #include <linux/fcntl.h>
41 #include <linux/interrupt.h>
42 #include <linux/ptrace.h>
43 #include <linux/ioport.h>
44 #include <linux/in.h>
45 #include <linux/slab.h>
46 #include <linux/string.h>
47 #include <linux/timer.h>
48 #include <linux/errno.h>
49 #include <linux/init.h>
50 #include <linux/netdevice.h>
51 #include <linux/skbuff.h>
52 #include <linux/if_arp.h>
53 #include <linux/if_frad.h>
54 #include <linux/sdla.h>
55 #include <linux/bitops.h>
56
57 #include <asm/system.h>
58 #include <asm/io.h>
59 #include <asm/dma.h>
60 #include <asm/uaccess.h>
61
62 static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
63
64 static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
65
66 static unsigned int valid_mem[] = {
67 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
68 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
69 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
70 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
71 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
72
73 static DEFINE_SPINLOCK(sdla_lock);
74
75 /*********************************************************
76 *
77 * these are the core routines that access the card itself
78 *
79 *********************************************************/
80
81 #define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
82
__sdla_read(struct net_device * dev,int addr,void * buf,short len)83 static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
84 {
85 char *temp;
86 const void *base;
87 int offset, bytes;
88
89 temp = buf;
90 while(len)
91 {
92 offset = addr & SDLA_ADDR_MASK;
93 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
94 base = (const void *) (dev->mem_start + offset);
95
96 SDLA_WINDOW(dev, addr);
97 memcpy(temp, base, bytes);
98
99 addr += bytes;
100 temp += bytes;
101 len -= bytes;
102 }
103 }
104
sdla_read(struct net_device * dev,int addr,void * buf,short len)105 static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
106 {
107 unsigned long flags;
108 spin_lock_irqsave(&sdla_lock, flags);
109 __sdla_read(dev, addr, buf, len);
110 spin_unlock_irqrestore(&sdla_lock, flags);
111 }
112
__sdla_write(struct net_device * dev,int addr,const void * buf,short len)113 static void __sdla_write(struct net_device *dev, int addr,
114 const void *buf, short len)
115 {
116 const char *temp;
117 void *base;
118 int offset, bytes;
119
120 temp = buf;
121 while(len)
122 {
123 offset = addr & SDLA_ADDR_MASK;
124 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
125 base = (void *) (dev->mem_start + offset);
126
127 SDLA_WINDOW(dev, addr);
128 memcpy(base, temp, bytes);
129
130 addr += bytes;
131 temp += bytes;
132 len -= bytes;
133 }
134 }
135
sdla_write(struct net_device * dev,int addr,const void * buf,short len)136 static void sdla_write(struct net_device *dev, int addr,
137 const void *buf, short len)
138 {
139 unsigned long flags;
140
141 spin_lock_irqsave(&sdla_lock, flags);
142 __sdla_write(dev, addr, buf, len);
143 spin_unlock_irqrestore(&sdla_lock, flags);
144 }
145
146
sdla_clear(struct net_device * dev)147 static void sdla_clear(struct net_device *dev)
148 {
149 unsigned long flags;
150 char *base;
151 int len, addr, bytes;
152
153 len = 65536;
154 addr = 0;
155 bytes = SDLA_WINDOW_SIZE;
156 base = (void *) dev->mem_start;
157
158 spin_lock_irqsave(&sdla_lock, flags);
159 while(len)
160 {
161 SDLA_WINDOW(dev, addr);
162 memset(base, 0, bytes);
163
164 addr += bytes;
165 len -= bytes;
166 }
167 spin_unlock_irqrestore(&sdla_lock, flags);
168
169 }
170
sdla_byte(struct net_device * dev,int addr)171 static char sdla_byte(struct net_device *dev, int addr)
172 {
173 unsigned long flags;
174 char byte, *temp;
175
176 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
177
178 spin_lock_irqsave(&sdla_lock, flags);
179 SDLA_WINDOW(dev, addr);
180 byte = *temp;
181 spin_unlock_irqrestore(&sdla_lock, flags);
182
183 return byte;
184 }
185
sdla_stop(struct net_device * dev)186 static void sdla_stop(struct net_device *dev)
187 {
188 struct frad_local *flp;
189
190 flp = netdev_priv(dev);
191 switch(flp->type)
192 {
193 case SDLA_S502A:
194 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
195 flp->state = SDLA_HALT;
196 break;
197 case SDLA_S502E:
198 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
199 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
200 flp->state = SDLA_S502E_ENABLE;
201 break;
202 case SDLA_S507:
203 flp->state &= ~SDLA_CPUEN;
204 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
205 break;
206 case SDLA_S508:
207 flp->state &= ~SDLA_CPUEN;
208 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
209 break;
210 }
211 }
212
sdla_start(struct net_device * dev)213 static void sdla_start(struct net_device *dev)
214 {
215 struct frad_local *flp;
216
217 flp = netdev_priv(dev);
218 switch(flp->type)
219 {
220 case SDLA_S502A:
221 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
222 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
223 flp->state = SDLA_S502A_START;
224 break;
225 case SDLA_S502E:
226 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
227 outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
228 flp->state = 0;
229 break;
230 case SDLA_S507:
231 flp->state |= SDLA_CPUEN;
232 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
233 break;
234 case SDLA_S508:
235 flp->state |= SDLA_CPUEN;
236 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
237 break;
238 }
239 }
240
241 /****************************************************
242 *
243 * this is used for the S502A/E cards to determine
244 * the speed of the onboard CPU. Calibration is
245 * necessary for the Frame Relay code uploaded
246 * later. Incorrect results cause timing problems
247 * with link checks & status messages
248 *
249 ***************************************************/
250
sdla_z80_poll(struct net_device * dev,int z80_addr,int jiffs,char resp1,char resp2)251 static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
252 {
253 unsigned long start, done, now;
254 char resp, *temp;
255
256 start = now = jiffies;
257 done = jiffies + jiffs;
258
259 temp = (void *)dev->mem_start;
260 temp += z80_addr & SDLA_ADDR_MASK;
261
262 resp = ~resp1;
263 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
264 {
265 if (jiffies != now)
266 {
267 SDLA_WINDOW(dev, z80_addr);
268 now = jiffies;
269 resp = *temp;
270 }
271 }
272 return time_before(jiffies, done) ? jiffies - start : -1;
273 }
274
275 /* constants for Z80 CPU speed */
276 #define Z80_READY '1' /* Z80 is ready to begin */
277 #define LOADER_READY '2' /* driver is ready to begin */
278 #define Z80_SCC_OK '3' /* SCC is on board */
279 #define Z80_SCC_BAD '4' /* SCC was not found */
280
sdla_cpuspeed(struct net_device * dev,struct ifreq * ifr)281 static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
282 {
283 int jiffs;
284 char data;
285
286 sdla_start(dev);
287 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
288 return -EIO;
289
290 data = LOADER_READY;
291 sdla_write(dev, 0, &data, 1);
292
293 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
294 return -EIO;
295
296 sdla_stop(dev);
297 sdla_read(dev, 0, &data, 1);
298
299 if (data == Z80_SCC_BAD)
300 {
301 printk("%s: SCC bad\n", dev->name);
302 return -EIO;
303 }
304
305 if (data != Z80_SCC_OK)
306 return -EINVAL;
307
308 if (jiffs < 165)
309 ifr->ifr_mtu = SDLA_CPU_16M;
310 else if (jiffs < 220)
311 ifr->ifr_mtu = SDLA_CPU_10M;
312 else if (jiffs < 258)
313 ifr->ifr_mtu = SDLA_CPU_8M;
314 else if (jiffs < 357)
315 ifr->ifr_mtu = SDLA_CPU_7M;
316 else if (jiffs < 467)
317 ifr->ifr_mtu = SDLA_CPU_5M;
318 else
319 ifr->ifr_mtu = SDLA_CPU_3M;
320
321 return 0;
322 }
323
324 /************************************************
325 *
326 * Direct interaction with the Frame Relay code
327 * starts here.
328 *
329 ************************************************/
330
331 struct _dlci_stat
332 {
333 short dlci;
334 char flags;
335 } __packed;
336
337 struct _frad_stat
338 {
339 char flags;
340 struct _dlci_stat dlcis[SDLA_MAX_DLCI];
341 };
342
sdla_errors(struct net_device * dev,int cmd,int dlci,int ret,int len,void * data)343 static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
344 {
345 struct _dlci_stat *pstatus;
346 short *pdlci;
347 int i;
348 char *state, line[30];
349
350 switch (ret)
351 {
352 case SDLA_RET_MODEM:
353 state = data;
354 if (*state & SDLA_MODEM_DCD_LOW)
355 netdev_info(dev, "Modem DCD unexpectedly low!\n");
356 if (*state & SDLA_MODEM_CTS_LOW)
357 netdev_info(dev, "Modem CTS unexpectedly low!\n");
358 /* I should probably do something about this! */
359 break;
360
361 case SDLA_RET_CHANNEL_OFF:
362 netdev_info(dev, "Channel became inoperative!\n");
363 /* same here */
364 break;
365
366 case SDLA_RET_CHANNEL_ON:
367 netdev_info(dev, "Channel became operative!\n");
368 /* same here */
369 break;
370
371 case SDLA_RET_DLCI_STATUS:
372 netdev_info(dev, "Status change reported by Access Node\n");
373 len /= sizeof(struct _dlci_stat);
374 for(pstatus = data, i=0;i < len;i++,pstatus++)
375 {
376 if (pstatus->flags & SDLA_DLCI_NEW)
377 state = "new";
378 else if (pstatus->flags & SDLA_DLCI_DELETED)
379 state = "deleted";
380 else if (pstatus->flags & SDLA_DLCI_ACTIVE)
381 state = "active";
382 else
383 {
384 sprintf(line, "unknown status: %02X", pstatus->flags);
385 state = line;
386 }
387 netdev_info(dev, "DLCI %i: %s\n",
388 pstatus->dlci, state);
389 /* same here */
390 }
391 break;
392
393 case SDLA_RET_DLCI_UNKNOWN:
394 netdev_info(dev, "Received unknown DLCIs:");
395 len /= sizeof(short);
396 for(pdlci = data,i=0;i < len;i++,pdlci++)
397 pr_cont(" %i", *pdlci);
398 pr_cont("\n");
399 break;
400
401 case SDLA_RET_TIMEOUT:
402 netdev_err(dev, "Command timed out!\n");
403 break;
404
405 case SDLA_RET_BUF_OVERSIZE:
406 netdev_info(dev, "Bc/CIR overflow, acceptable size is %i\n",
407 len);
408 break;
409
410 case SDLA_RET_BUF_TOO_BIG:
411 netdev_info(dev, "Buffer size over specified max of %i\n",
412 len);
413 break;
414
415 case SDLA_RET_CHANNEL_INACTIVE:
416 case SDLA_RET_DLCI_INACTIVE:
417 case SDLA_RET_CIR_OVERFLOW:
418 case SDLA_RET_NO_BUFS:
419 if (cmd == SDLA_INFORMATION_WRITE)
420 break;
421
422 default:
423 netdev_dbg(dev, "Cmd 0x%02X generated return code 0x%02X\n",
424 cmd, ret);
425 /* Further processing could be done here */
426 break;
427 }
428 }
429
sdla_cmd(struct net_device * dev,int cmd,short dlci,short flags,void * inbuf,short inlen,void * outbuf,short * outlen)430 static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags,
431 void *inbuf, short inlen, void *outbuf, short *outlen)
432 {
433 static struct _frad_stat status;
434 struct frad_local *flp;
435 struct sdla_cmd *cmd_buf;
436 unsigned long pflags;
437 unsigned long jiffs;
438 int ret, waiting, len;
439 long window;
440
441 flp = netdev_priv(dev);
442 window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
443 cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
444 ret = 0;
445 len = 0;
446 jiffs = jiffies + HZ; /* 1 second is plenty */
447
448 spin_lock_irqsave(&sdla_lock, pflags);
449 SDLA_WINDOW(dev, window);
450 cmd_buf->cmd = cmd;
451 cmd_buf->dlci = dlci;
452 cmd_buf->flags = flags;
453
454 if (inbuf)
455 memcpy(cmd_buf->data, inbuf, inlen);
456
457 cmd_buf->length = inlen;
458
459 cmd_buf->opp_flag = 1;
460 spin_unlock_irqrestore(&sdla_lock, pflags);
461
462 waiting = 1;
463 len = 0;
464 while (waiting && time_before_eq(jiffies, jiffs))
465 {
466 if (waiting++ % 3)
467 {
468 spin_lock_irqsave(&sdla_lock, pflags);
469 SDLA_WINDOW(dev, window);
470 waiting = ((volatile int)(cmd_buf->opp_flag));
471 spin_unlock_irqrestore(&sdla_lock, pflags);
472 }
473 }
474
475 if (!waiting)
476 {
477
478 spin_lock_irqsave(&sdla_lock, pflags);
479 SDLA_WINDOW(dev, window);
480 ret = cmd_buf->retval;
481 len = cmd_buf->length;
482 if (outbuf && outlen)
483 {
484 *outlen = *outlen >= len ? len : *outlen;
485
486 if (*outlen)
487 memcpy(outbuf, cmd_buf->data, *outlen);
488 }
489
490 /* This is a local copy that's used for error handling */
491 if (ret)
492 memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
493
494 spin_unlock_irqrestore(&sdla_lock, pflags);
495 }
496 else
497 ret = SDLA_RET_TIMEOUT;
498
499 if (ret != SDLA_RET_OK)
500 sdla_errors(dev, cmd, dlci, ret, len, &status);
501
502 return ret;
503 }
504
505 /***********************************************
506 *
507 * these functions are called by the DLCI driver
508 *
509 ***********************************************/
510
511 static int sdla_reconfig(struct net_device *dev);
512
sdla_activate(struct net_device * slave,struct net_device * master)513 static int sdla_activate(struct net_device *slave, struct net_device *master)
514 {
515 struct frad_local *flp;
516 int i;
517
518 flp = netdev_priv(slave);
519
520 for(i=0;i<CONFIG_DLCI_MAX;i++)
521 if (flp->master[i] == master)
522 break;
523
524 if (i == CONFIG_DLCI_MAX)
525 return -ENODEV;
526
527 flp->dlci[i] = abs(flp->dlci[i]);
528
529 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
530 sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
531
532 return 0;
533 }
534
sdla_deactivate(struct net_device * slave,struct net_device * master)535 static int sdla_deactivate(struct net_device *slave, struct net_device *master)
536 {
537 struct frad_local *flp;
538 int i;
539
540 flp = netdev_priv(slave);
541
542 for(i=0;i<CONFIG_DLCI_MAX;i++)
543 if (flp->master[i] == master)
544 break;
545
546 if (i == CONFIG_DLCI_MAX)
547 return -ENODEV;
548
549 flp->dlci[i] = -abs(flp->dlci[i]);
550
551 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
552 sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
553
554 return 0;
555 }
556
sdla_assoc(struct net_device * slave,struct net_device * master)557 static int sdla_assoc(struct net_device *slave, struct net_device *master)
558 {
559 struct frad_local *flp;
560 int i;
561
562 if (master->type != ARPHRD_DLCI)
563 return -EINVAL;
564
565 flp = netdev_priv(slave);
566
567 for(i=0;i<CONFIG_DLCI_MAX;i++)
568 {
569 if (!flp->master[i])
570 break;
571 if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
572 return -EADDRINUSE;
573 }
574
575 if (i == CONFIG_DLCI_MAX)
576 return -EMLINK; /* #### Alan: Comments on this ?? */
577
578
579 flp->master[i] = master;
580 flp->dlci[i] = -*(short *)(master->dev_addr);
581 master->mtu = slave->mtu;
582
583 if (netif_running(slave)) {
584 if (flp->config.station == FRAD_STATION_CPE)
585 sdla_reconfig(slave);
586 else
587 sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
588 }
589
590 return 0;
591 }
592
sdla_deassoc(struct net_device * slave,struct net_device * master)593 static int sdla_deassoc(struct net_device *slave, struct net_device *master)
594 {
595 struct frad_local *flp;
596 int i;
597
598 flp = netdev_priv(slave);
599
600 for(i=0;i<CONFIG_DLCI_MAX;i++)
601 if (flp->master[i] == master)
602 break;
603
604 if (i == CONFIG_DLCI_MAX)
605 return -ENODEV;
606
607 flp->master[i] = NULL;
608 flp->dlci[i] = 0;
609
610
611 if (netif_running(slave)) {
612 if (flp->config.station == FRAD_STATION_CPE)
613 sdla_reconfig(slave);
614 else
615 sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
616 }
617
618 return 0;
619 }
620
sdla_dlci_conf(struct net_device * slave,struct net_device * master,int get)621 static int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
622 {
623 struct frad_local *flp;
624 struct dlci_local *dlp;
625 int i;
626 short len, ret;
627
628 flp = netdev_priv(slave);
629
630 for(i=0;i<CONFIG_DLCI_MAX;i++)
631 if (flp->master[i] == master)
632 break;
633
634 if (i == CONFIG_DLCI_MAX)
635 return -ENODEV;
636
637 dlp = netdev_priv(master);
638
639 ret = SDLA_RET_OK;
640 len = sizeof(struct dlci_conf);
641 if (netif_running(slave)) {
642 if (get)
643 ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
644 NULL, 0, &dlp->config, &len);
645 else
646 ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
647 &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
648 }
649
650 return ret == SDLA_RET_OK ? 0 : -EIO;
651 }
652
653 /**************************
654 *
655 * now for the Linux driver
656 *
657 **************************/
658
659 /* NOTE: the DLCI driver deals with freeing the SKB!! */
sdla_transmit(struct sk_buff * skb,struct net_device * dev)660 static netdev_tx_t sdla_transmit(struct sk_buff *skb,
661 struct net_device *dev)
662 {
663 struct frad_local *flp;
664 int ret, addr, accept, i;
665 short size;
666 unsigned long flags;
667 struct buf_entry *pbuf;
668
669 flp = netdev_priv(dev);
670 ret = 0;
671 accept = 1;
672
673 netif_stop_queue(dev);
674
675 /*
676 * stupid GateD insists on setting up the multicast router thru us
677 * and we're ill equipped to handle a non Frame Relay packet at this
678 * time!
679 */
680
681 accept = 1;
682 switch (dev->type)
683 {
684 case ARPHRD_FRAD:
685 if (skb->dev->type != ARPHRD_DLCI)
686 {
687 netdev_warn(dev, "Non DLCI device, type %i, tried to send on FRAD module\n",
688 skb->dev->type);
689 accept = 0;
690 }
691 break;
692 default:
693 netdev_warn(dev, "unknown firmware type 0x%04X\n",
694 dev->type);
695 accept = 0;
696 break;
697 }
698 if (accept)
699 {
700 /* this is frame specific, but till there's a PPP module, it's the default */
701 switch (flp->type)
702 {
703 case SDLA_S502A:
704 case SDLA_S502E:
705 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
706 break;
707 case SDLA_S508:
708 size = sizeof(addr);
709 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
710 if (ret == SDLA_RET_OK)
711 {
712
713 spin_lock_irqsave(&sdla_lock, flags);
714 SDLA_WINDOW(dev, addr);
715 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
716 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
717 SDLA_WINDOW(dev, addr);
718 pbuf->opp_flag = 1;
719 spin_unlock_irqrestore(&sdla_lock, flags);
720 }
721 break;
722 }
723
724 switch (ret)
725 {
726 case SDLA_RET_OK:
727 dev->stats.tx_packets++;
728 break;
729
730 case SDLA_RET_CIR_OVERFLOW:
731 case SDLA_RET_BUF_OVERSIZE:
732 case SDLA_RET_NO_BUFS:
733 dev->stats.tx_dropped++;
734 break;
735
736 default:
737 dev->stats.tx_errors++;
738 break;
739 }
740 }
741 netif_wake_queue(dev);
742 for(i=0;i<CONFIG_DLCI_MAX;i++)
743 {
744 if(flp->master[i]!=NULL)
745 netif_wake_queue(flp->master[i]);
746 }
747
748 dev_kfree_skb(skb);
749 return NETDEV_TX_OK;
750 }
751
sdla_receive(struct net_device * dev)752 static void sdla_receive(struct net_device *dev)
753 {
754 struct net_device *master;
755 struct frad_local *flp;
756 struct dlci_local *dlp;
757 struct sk_buff *skb;
758
759 struct sdla_cmd *cmd;
760 struct buf_info *pbufi;
761 struct buf_entry *pbuf;
762
763 unsigned long flags;
764 int i=0, received, success, addr, buf_base, buf_top;
765 short dlci, len, len2, split;
766
767 flp = netdev_priv(dev);
768 success = 1;
769 received = addr = buf_top = buf_base = 0;
770 len = dlci = 0;
771 skb = NULL;
772 master = NULL;
773 cmd = NULL;
774 pbufi = NULL;
775 pbuf = NULL;
776
777 spin_lock_irqsave(&sdla_lock, flags);
778
779 switch (flp->type)
780 {
781 case SDLA_S502A:
782 case SDLA_S502E:
783 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
784 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
785 success = cmd->opp_flag;
786 if (!success)
787 break;
788
789 dlci = cmd->dlci;
790 len = cmd->length;
791 break;
792
793 case SDLA_S508:
794 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
795 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
796 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
797 success = pbuf->opp_flag;
798 if (!success)
799 break;
800
801 buf_top = pbufi->buf_top;
802 buf_base = pbufi->buf_base;
803 dlci = pbuf->dlci;
804 len = pbuf->length;
805 addr = pbuf->buf_addr;
806 break;
807 }
808
809 /* common code, find the DLCI and get the SKB */
810 if (success)
811 {
812 for (i=0;i<CONFIG_DLCI_MAX;i++)
813 if (flp->dlci[i] == dlci)
814 break;
815
816 if (i == CONFIG_DLCI_MAX)
817 {
818 netdev_notice(dev, "Received packet from invalid DLCI %i, ignoring\n",
819 dlci);
820 dev->stats.rx_errors++;
821 success = 0;
822 }
823 }
824
825 if (success)
826 {
827 master = flp->master[i];
828 skb = dev_alloc_skb(len + sizeof(struct frhdr));
829 if (skb == NULL)
830 {
831 netdev_notice(dev, "Memory squeeze, dropping packet\n");
832 dev->stats.rx_dropped++;
833 success = 0;
834 }
835 else
836 skb_reserve(skb, sizeof(struct frhdr));
837 }
838
839 /* pick up the data */
840 switch (flp->type)
841 {
842 case SDLA_S502A:
843 case SDLA_S502E:
844 if (success)
845 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
846
847 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
848 cmd->opp_flag = 0;
849 break;
850
851 case SDLA_S508:
852 if (success)
853 {
854 /* is this buffer split off the end of the internal ring buffer */
855 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
856 len2 = len - split;
857
858 __sdla_read(dev, addr, skb_put(skb, len2), len2);
859 if (split)
860 __sdla_read(dev, buf_base, skb_put(skb, split), split);
861 }
862
863 /* increment the buffer we're looking at */
864 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
865 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
866 pbuf->opp_flag = 0;
867 break;
868 }
869
870 if (success)
871 {
872 dev->stats.rx_packets++;
873 dlp = netdev_priv(master);
874 (*dlp->receive)(skb, master);
875 }
876
877 spin_unlock_irqrestore(&sdla_lock, flags);
878 }
879
sdla_isr(int dummy,void * dev_id)880 static irqreturn_t sdla_isr(int dummy, void *dev_id)
881 {
882 struct net_device *dev;
883 struct frad_local *flp;
884 char byte;
885
886 dev = dev_id;
887
888 flp = netdev_priv(dev);
889
890 if (!flp->initialized)
891 {
892 netdev_warn(dev, "irq %d for uninitialized device\n", dev->irq);
893 return IRQ_NONE;
894 }
895
896 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
897 switch (byte)
898 {
899 case SDLA_INTR_RX:
900 sdla_receive(dev);
901 break;
902
903 /* the command will get an error return, which is processed above */
904 case SDLA_INTR_MODEM:
905 case SDLA_INTR_STATUS:
906 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
907 break;
908
909 case SDLA_INTR_TX:
910 case SDLA_INTR_COMPLETE:
911 case SDLA_INTR_TIMER:
912 netdev_warn(dev, "invalid irq flag 0x%02X\n", byte);
913 break;
914 }
915
916 /* the S502E requires a manual acknowledgement of the interrupt */
917 if (flp->type == SDLA_S502E)
918 {
919 flp->state &= ~SDLA_S502E_INTACK;
920 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
921 flp->state |= SDLA_S502E_INTACK;
922 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
923 }
924
925 /* this clears the byte, informing the Z80 we're done */
926 byte = 0;
927 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
928 return IRQ_HANDLED;
929 }
930
sdla_poll(unsigned long device)931 static void sdla_poll(unsigned long device)
932 {
933 struct net_device *dev;
934 struct frad_local *flp;
935
936 dev = (struct net_device *) device;
937 flp = netdev_priv(dev);
938
939 if (sdla_byte(dev, SDLA_502_RCV_BUF))
940 sdla_receive(dev);
941
942 flp->timer.expires = 1;
943 add_timer(&flp->timer);
944 }
945
sdla_close(struct net_device * dev)946 static int sdla_close(struct net_device *dev)
947 {
948 struct frad_local *flp;
949 struct intr_info intr;
950 int len, i;
951 short dlcis[CONFIG_DLCI_MAX];
952
953 flp = netdev_priv(dev);
954
955 len = 0;
956 for(i=0;i<CONFIG_DLCI_MAX;i++)
957 if (flp->dlci[i])
958 dlcis[len++] = abs(flp->dlci[i]);
959 len *= 2;
960
961 if (flp->config.station == FRAD_STATION_NODE)
962 {
963 for(i=0;i<CONFIG_DLCI_MAX;i++)
964 if (flp->dlci[i] > 0)
965 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
966 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
967 }
968
969 memset(&intr, 0, sizeof(intr));
970 /* let's start up the reception */
971 switch(flp->type)
972 {
973 case SDLA_S502A:
974 del_timer(&flp->timer);
975 break;
976
977 case SDLA_S502E:
978 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
979 flp->state &= ~SDLA_S502E_INTACK;
980 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
981 break;
982
983 case SDLA_S507:
984 break;
985
986 case SDLA_S508:
987 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
988 flp->state &= ~SDLA_S508_INTEN;
989 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
990 break;
991 }
992
993 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
994
995 netif_stop_queue(dev);
996
997 return 0;
998 }
999
1000 struct conf_data {
1001 struct frad_conf config;
1002 short dlci[CONFIG_DLCI_MAX];
1003 };
1004
sdla_open(struct net_device * dev)1005 static int sdla_open(struct net_device *dev)
1006 {
1007 struct frad_local *flp;
1008 struct dlci_local *dlp;
1009 struct conf_data data;
1010 struct intr_info intr;
1011 int len, i;
1012 char byte;
1013
1014 flp = netdev_priv(dev);
1015
1016 if (!flp->initialized)
1017 return -EPERM;
1018
1019 if (!flp->configured)
1020 return -EPERM;
1021
1022 /* time to send in the configuration */
1023 len = 0;
1024 for(i=0;i<CONFIG_DLCI_MAX;i++)
1025 if (flp->dlci[i])
1026 data.dlci[len++] = abs(flp->dlci[i]);
1027 len *= 2;
1028
1029 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1030 len += sizeof(struct frad_conf);
1031
1032 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1033 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1034
1035 if (flp->type == SDLA_S508)
1036 flp->buffer = 0;
1037
1038 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1039
1040 /* let's start up the reception */
1041 memset(&intr, 0, sizeof(intr));
1042 switch(flp->type)
1043 {
1044 case SDLA_S502A:
1045 flp->timer.expires = 1;
1046 add_timer(&flp->timer);
1047 break;
1048
1049 case SDLA_S502E:
1050 flp->state |= SDLA_S502E_ENABLE;
1051 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1052 flp->state |= SDLA_S502E_INTACK;
1053 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1054 byte = 0;
1055 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
1056 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1057 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
1058 break;
1059
1060 case SDLA_S507:
1061 break;
1062
1063 case SDLA_S508:
1064 flp->state |= SDLA_S508_INTEN;
1065 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
1066 byte = 0;
1067 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
1068 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
1069 intr.irq = dev->irq;
1070 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
1071 break;
1072 }
1073
1074 if (flp->config.station == FRAD_STATION_CPE)
1075 {
1076 byte = SDLA_ICS_STATUS_ENQ;
1077 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
1078 }
1079 else
1080 {
1081 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
1082 for(i=0;i<CONFIG_DLCI_MAX;i++)
1083 if (flp->dlci[i] > 0)
1084 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
1085 }
1086
1087 /* configure any specific DLCI settings */
1088 for(i=0;i<CONFIG_DLCI_MAX;i++)
1089 if (flp->dlci[i])
1090 {
1091 dlp = netdev_priv(flp->master[i]);
1092 if (dlp->configured)
1093 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
1094 }
1095
1096 netif_start_queue(dev);
1097
1098 return 0;
1099 }
1100
sdla_config(struct net_device * dev,struct frad_conf __user * conf,int get)1101 static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
1102 {
1103 struct frad_local *flp;
1104 struct conf_data data;
1105 int i;
1106 short size;
1107
1108 if (dev->type == 0xFFFF)
1109 return -EUNATCH;
1110
1111 flp = netdev_priv(dev);
1112
1113 if (!get)
1114 {
1115 if (netif_running(dev))
1116 return -EBUSY;
1117
1118 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
1119 return -EFAULT;
1120
1121 if (data.config.station & ~FRAD_STATION_NODE)
1122 return -EINVAL;
1123
1124 if (data.config.flags & ~FRAD_VALID_FLAGS)
1125 return -EINVAL;
1126
1127 if ((data.config.kbaud < 0) ||
1128 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
1129 return -EINVAL;
1130
1131 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
1132 return -EINVAL;
1133
1134 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
1135 return -EINVAL;
1136
1137 if ((data.config.T391 < 5) || (data.config.T391 > 30))
1138 return -EINVAL;
1139
1140 if ((data.config.T392 < 5) || (data.config.T392 > 30))
1141 return -EINVAL;
1142
1143 if ((data.config.N391 < 1) || (data.config.N391 > 255))
1144 return -EINVAL;
1145
1146 if ((data.config.N392 < 1) || (data.config.N392 > 10))
1147 return -EINVAL;
1148
1149 if ((data.config.N393 < 1) || (data.config.N393 > 10))
1150 return -EINVAL;
1151
1152 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1153 flp->config.flags |= SDLA_DIRECT_RECV;
1154
1155 if (flp->type == SDLA_S508)
1156 flp->config.flags |= SDLA_TX70_RX30;
1157
1158 if (dev->mtu != flp->config.mtu)
1159 {
1160 /* this is required to change the MTU */
1161 dev->mtu = flp->config.mtu;
1162 for(i=0;i<CONFIG_DLCI_MAX;i++)
1163 if (flp->master[i])
1164 flp->master[i]->mtu = flp->config.mtu;
1165 }
1166
1167 flp->config.mtu += sizeof(struct frhdr);
1168
1169 /* off to the races! */
1170 if (!flp->configured)
1171 sdla_start(dev);
1172
1173 flp->configured = 1;
1174 }
1175 else
1176 {
1177 /* no sense reading if the CPU isn't started */
1178 if (netif_running(dev))
1179 {
1180 size = sizeof(data);
1181 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
1182 return -EIO;
1183 }
1184 else
1185 if (flp->configured)
1186 memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
1187 else
1188 memset(&data.config, 0, sizeof(struct frad_conf));
1189
1190 memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
1191 data.config.flags &= FRAD_VALID_FLAGS;
1192 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
1193 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
1194 }
1195
1196 return 0;
1197 }
1198
sdla_xfer(struct net_device * dev,struct sdla_mem __user * info,int read)1199 static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
1200 {
1201 struct sdla_mem mem;
1202 char *temp;
1203
1204 if(copy_from_user(&mem, info, sizeof(mem)))
1205 return -EFAULT;
1206
1207 if (read)
1208 {
1209 temp = kzalloc(mem.len, GFP_KERNEL);
1210 if (!temp)
1211 return -ENOMEM;
1212 sdla_read(dev, mem.addr, temp, mem.len);
1213 if(copy_to_user(mem.data, temp, mem.len))
1214 {
1215 kfree(temp);
1216 return -EFAULT;
1217 }
1218 kfree(temp);
1219 }
1220 else
1221 {
1222 temp = memdup_user(mem.data, mem.len);
1223 if (IS_ERR(temp))
1224 return PTR_ERR(temp);
1225 sdla_write(dev, mem.addr, temp, mem.len);
1226 kfree(temp);
1227 }
1228 return 0;
1229 }
1230
sdla_reconfig(struct net_device * dev)1231 static int sdla_reconfig(struct net_device *dev)
1232 {
1233 struct frad_local *flp;
1234 struct conf_data data;
1235 int i, len;
1236
1237 flp = netdev_priv(dev);
1238
1239 len = 0;
1240 for(i=0;i<CONFIG_DLCI_MAX;i++)
1241 if (flp->dlci[i])
1242 data.dlci[len++] = flp->dlci[i];
1243 len *= 2;
1244
1245 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1246 len += sizeof(struct frad_conf);
1247
1248 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1249 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1250 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1251
1252 return 0;
1253 }
1254
sdla_ioctl(struct net_device * dev,struct ifreq * ifr,int cmd)1255 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1256 {
1257 struct frad_local *flp;
1258
1259 if(!capable(CAP_NET_ADMIN))
1260 return -EPERM;
1261
1262 flp = netdev_priv(dev);
1263
1264 if (!flp->initialized)
1265 return -EINVAL;
1266
1267 switch (cmd)
1268 {
1269 case FRAD_GET_CONF:
1270 case FRAD_SET_CONF:
1271 return sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF);
1272
1273 case SDLA_IDENTIFY:
1274 ifr->ifr_flags = flp->type;
1275 break;
1276
1277 case SDLA_CPUSPEED:
1278 return sdla_cpuspeed(dev, ifr);
1279
1280 /* ==========================================================
1281 NOTE: This is rather a useless action right now, as the
1282 current driver does not support protocols other than
1283 FR. However, Sangoma has modules for a number of
1284 other protocols in the works.
1285 ============================================================*/
1286 case SDLA_PROTOCOL:
1287 if (flp->configured)
1288 return -EALREADY;
1289
1290 switch (ifr->ifr_flags)
1291 {
1292 case ARPHRD_FRAD:
1293 dev->type = ifr->ifr_flags;
1294 break;
1295 default:
1296 return -ENOPROTOOPT;
1297 }
1298 break;
1299
1300 case SDLA_CLEARMEM:
1301 sdla_clear(dev);
1302 break;
1303
1304 case SDLA_WRITEMEM:
1305 case SDLA_READMEM:
1306 if(!capable(CAP_SYS_RAWIO))
1307 return -EPERM;
1308 return sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM);
1309
1310 case SDLA_START:
1311 sdla_start(dev);
1312 break;
1313
1314 case SDLA_STOP:
1315 sdla_stop(dev);
1316 break;
1317
1318 default:
1319 return -EOPNOTSUPP;
1320 }
1321 return 0;
1322 }
1323
sdla_change_mtu(struct net_device * dev,int new_mtu)1324 static int sdla_change_mtu(struct net_device *dev, int new_mtu)
1325 {
1326 struct frad_local *flp;
1327
1328 flp = netdev_priv(dev);
1329
1330 if (netif_running(dev))
1331 return -EBUSY;
1332
1333 /* for now, you can't change the MTU! */
1334 return -EOPNOTSUPP;
1335 }
1336
sdla_set_config(struct net_device * dev,struct ifmap * map)1337 static int sdla_set_config(struct net_device *dev, struct ifmap *map)
1338 {
1339 struct frad_local *flp;
1340 int i;
1341 char byte;
1342 unsigned base;
1343 int err = -EINVAL;
1344
1345 flp = netdev_priv(dev);
1346
1347 if (flp->initialized)
1348 return -EINVAL;
1349
1350 for(i=0; i < ARRAY_SIZE(valid_port); i++)
1351 if (valid_port[i] == map->base_addr)
1352 break;
1353
1354 if (i == ARRAY_SIZE(valid_port))
1355 return -EINVAL;
1356
1357 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
1358 pr_warn("io-port 0x%04lx in use\n", dev->base_addr);
1359 return -EINVAL;
1360 }
1361 base = map->base_addr;
1362
1363 /* test for card types, S502A, S502E, S507, S508 */
1364 /* these tests shut down the card completely, so clear the state */
1365 flp->type = SDLA_UNKNOWN;
1366 flp->state = 0;
1367
1368 for(i=1;i<SDLA_IO_EXTENTS;i++)
1369 if (inb(base + i) != 0xFF)
1370 break;
1371
1372 if (i == SDLA_IO_EXTENTS) {
1373 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
1374 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
1375 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
1376 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
1377 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1378 flp->type = SDLA_S502E;
1379 goto got_type;
1380 }
1381 }
1382 }
1383
1384 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
1385 if (inb(base + i) != byte)
1386 break;
1387
1388 if (i == SDLA_IO_EXTENTS) {
1389 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1390 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
1391 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
1392 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
1393 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1394 flp->type = SDLA_S507;
1395 goto got_type;
1396 }
1397 }
1398 }
1399
1400 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1401 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
1402 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
1403 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
1404 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1405 flp->type = SDLA_S508;
1406 goto got_type;
1407 }
1408 }
1409
1410 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
1411 if (inb(base + SDLA_S502_STS) == 0x40) {
1412 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1413 if (inb(base + SDLA_S502_STS) == 0x40) {
1414 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
1415 if (inb(base + SDLA_S502_STS) == 0x44) {
1416 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1417 flp->type = SDLA_S502A;
1418 goto got_type;
1419 }
1420 }
1421 }
1422
1423 netdev_notice(dev, "Unknown card type\n");
1424 err = -ENODEV;
1425 goto fail;
1426
1427 got_type:
1428 switch(base) {
1429 case 0x270:
1430 case 0x280:
1431 case 0x380:
1432 case 0x390:
1433 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1434 goto fail;
1435 }
1436
1437 switch (map->irq) {
1438 case 2:
1439 if (flp->type != SDLA_S502E)
1440 goto fail;
1441 break;
1442
1443 case 10:
1444 case 11:
1445 case 12:
1446 case 15:
1447 case 4:
1448 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1449 goto fail;
1450 break;
1451 case 3:
1452 case 5:
1453 case 7:
1454 if (flp->type == SDLA_S502A)
1455 goto fail;
1456 break;
1457
1458 default:
1459 goto fail;
1460 }
1461
1462 err = -EAGAIN;
1463 if (request_irq(dev->irq, sdla_isr, 0, dev->name, dev))
1464 goto fail;
1465
1466 if (flp->type == SDLA_S507) {
1467 switch(dev->irq) {
1468 case 3:
1469 flp->state = SDLA_S507_IRQ3;
1470 break;
1471 case 4:
1472 flp->state = SDLA_S507_IRQ4;
1473 break;
1474 case 5:
1475 flp->state = SDLA_S507_IRQ5;
1476 break;
1477 case 7:
1478 flp->state = SDLA_S507_IRQ7;
1479 break;
1480 case 10:
1481 flp->state = SDLA_S507_IRQ10;
1482 break;
1483 case 11:
1484 flp->state = SDLA_S507_IRQ11;
1485 break;
1486 case 12:
1487 flp->state = SDLA_S507_IRQ12;
1488 break;
1489 case 15:
1490 flp->state = SDLA_S507_IRQ15;
1491 break;
1492 }
1493 }
1494
1495 for(i=0; i < ARRAY_SIZE(valid_mem); i++)
1496 if (valid_mem[i] == map->mem_start)
1497 break;
1498
1499 err = -EINVAL;
1500 if (i == ARRAY_SIZE(valid_mem))
1501 goto fail2;
1502
1503 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
1504 goto fail2;
1505
1506 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
1507 goto fail2;
1508
1509 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
1510 goto fail2;
1511
1512 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1513 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1514 switch(flp->type) {
1515 case SDLA_S502A:
1516 case SDLA_S502E:
1517 switch (map->mem_start >> 16) {
1518 case 0x0A:
1519 byte |= SDLA_S502_SEG_A;
1520 break;
1521 case 0x0C:
1522 byte |= SDLA_S502_SEG_C;
1523 break;
1524 case 0x0D:
1525 byte |= SDLA_S502_SEG_D;
1526 break;
1527 case 0x0E:
1528 byte |= SDLA_S502_SEG_E;
1529 break;
1530 }
1531 break;
1532 case SDLA_S507:
1533 switch (map->mem_start >> 16) {
1534 case 0x0A:
1535 byte |= SDLA_S507_SEG_A;
1536 break;
1537 case 0x0B:
1538 byte |= SDLA_S507_SEG_B;
1539 break;
1540 case 0x0C:
1541 byte |= SDLA_S507_SEG_C;
1542 break;
1543 case 0x0E:
1544 byte |= SDLA_S507_SEG_E;
1545 break;
1546 }
1547 break;
1548 case SDLA_S508:
1549 switch (map->mem_start >> 16) {
1550 case 0x0A:
1551 byte |= SDLA_S508_SEG_A;
1552 break;
1553 case 0x0C:
1554 byte |= SDLA_S508_SEG_C;
1555 break;
1556 case 0x0D:
1557 byte |= SDLA_S508_SEG_D;
1558 break;
1559 case 0x0E:
1560 byte |= SDLA_S508_SEG_E;
1561 break;
1562 }
1563 break;
1564 }
1565
1566 /* set the memory bits, and enable access */
1567 outb(byte, base + SDLA_REG_PC_WINDOW);
1568
1569 switch(flp->type)
1570 {
1571 case SDLA_S502E:
1572 flp->state = SDLA_S502E_ENABLE;
1573 break;
1574 case SDLA_S507:
1575 flp->state |= SDLA_MEMEN;
1576 break;
1577 case SDLA_S508:
1578 flp->state = SDLA_MEMEN;
1579 break;
1580 }
1581 outb(flp->state, base + SDLA_REG_CONTROL);
1582
1583 dev->irq = map->irq;
1584 dev->base_addr = base;
1585 dev->mem_start = map->mem_start;
1586 dev->mem_end = dev->mem_start + 0x2000;
1587 flp->initialized = 1;
1588 return 0;
1589
1590 fail2:
1591 free_irq(map->irq, dev);
1592 fail:
1593 release_region(base, SDLA_IO_EXTENTS);
1594 return err;
1595 }
1596
1597 static const struct net_device_ops sdla_netdev_ops = {
1598 .ndo_open = sdla_open,
1599 .ndo_stop = sdla_close,
1600 .ndo_do_ioctl = sdla_ioctl,
1601 .ndo_set_config = sdla_set_config,
1602 .ndo_start_xmit = sdla_transmit,
1603 .ndo_change_mtu = sdla_change_mtu,
1604 };
1605
setup_sdla(struct net_device * dev)1606 static void setup_sdla(struct net_device *dev)
1607 {
1608 struct frad_local *flp = netdev_priv(dev);
1609
1610 netdev_boot_setup_check(dev);
1611
1612 dev->netdev_ops = &sdla_netdev_ops;
1613 dev->flags = 0;
1614 dev->type = 0xFFFF;
1615 dev->hard_header_len = 0;
1616 dev->addr_len = 0;
1617 dev->mtu = SDLA_MAX_MTU;
1618
1619 flp->activate = sdla_activate;
1620 flp->deactivate = sdla_deactivate;
1621 flp->assoc = sdla_assoc;
1622 flp->deassoc = sdla_deassoc;
1623 flp->dlci_conf = sdla_dlci_conf;
1624
1625 init_timer(&flp->timer);
1626 flp->timer.expires = 1;
1627 flp->timer.data = (unsigned long) dev;
1628 flp->timer.function = sdla_poll;
1629 }
1630
1631 static struct net_device *sdla;
1632
init_sdla(void)1633 static int __init init_sdla(void)
1634 {
1635 int err;
1636
1637 printk("%s.\n", version);
1638
1639 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0", setup_sdla);
1640 if (!sdla)
1641 return -ENOMEM;
1642
1643 err = register_netdev(sdla);
1644 if (err)
1645 free_netdev(sdla);
1646
1647 return err;
1648 }
1649
exit_sdla(void)1650 static void __exit exit_sdla(void)
1651 {
1652 struct frad_local *flp = netdev_priv(sdla);
1653
1654 unregister_netdev(sdla);
1655 if (flp->initialized) {
1656 free_irq(sdla->irq, sdla);
1657 release_region(sdla->base_addr, SDLA_IO_EXTENTS);
1658 }
1659 del_timer_sync(&flp->timer);
1660 free_netdev(sdla);
1661 }
1662
1663 MODULE_LICENSE("GPL");
1664
1665 module_init(init_sdla);
1666 module_exit(exit_sdla);
1667