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x86/amd-iommu: Add function to complete a tlb flush
[linux/fpc-iii.git] / drivers / net / wan / sdla.c
blob2b15a7e40d5b4de77965b2aa4c2d0c746fbd3e8a
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 = netdev_priv(dev);
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 = netdev_priv(dev);
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 = netdev_priv(dev);
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 = netdev_priv(slave);
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 = netdev_priv(slave);
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 = netdev_priv(slave);
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 = netdev_priv(slave);
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 = netdev_priv(slave);
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 = netdev_priv(master);
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 netdev_tx_t sdla_transmit(struct sk_buff *skb,
655 struct net_device *dev)
656 {
657 struct frad_local *flp;
658 int ret, addr, accept, i;
659 short size;
660 unsigned long flags;
661 struct buf_entry *pbuf;
662
663 flp = netdev_priv(dev);
664 ret = 0;
665 accept = 1;
666
667 netif_stop_queue(dev);
668
669 /*
670 * stupid GateD insists on setting up the multicast router thru us
671 * and we're ill equipped to handle a non Frame Relay packet at this
672 * time!
673 */
674
675 accept = 1;
676 switch (dev->type)
677 {
678 case ARPHRD_FRAD:
679 if (skb->dev->type != ARPHRD_DLCI)
680 {
681 printk(KERN_WARNING "%s: Non DLCI device, type %i, tried to send on FRAD module.\n", dev->name, skb->dev->type);
682 accept = 0;
683 }
684 break;
685 default:
686 printk(KERN_WARNING "%s: unknown firmware type 0x%4.4X\n", dev->name, dev->type);
687 accept = 0;
688 break;
689 }
690 if (accept)
691 {
692 /* this is frame specific, but till there's a PPP module, it's the default */
693 switch (flp->type)
694 {
695 case SDLA_S502A:
696 case SDLA_S502E:
697 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
698 break;
699 case SDLA_S508:
700 size = sizeof(addr);
701 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
702 if (ret == SDLA_RET_OK)
703 {
704
705 spin_lock_irqsave(&sdla_lock, flags);
706 SDLA_WINDOW(dev, addr);
707 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK));
708 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
709 SDLA_WINDOW(dev, addr);
710 pbuf->opp_flag = 1;
711 spin_unlock_irqrestore(&sdla_lock, flags);
712 }
713 break;
714 }
715
716 switch (ret)
717 {
718 case SDLA_RET_OK:
719 dev->stats.tx_packets++;
720 break;
721
722 case SDLA_RET_CIR_OVERFLOW:
723 case SDLA_RET_BUF_OVERSIZE:
724 case SDLA_RET_NO_BUFS:
725 dev->stats.tx_dropped++;
726 break;
727
728 default:
729 dev->stats.tx_errors++;
730 break;
731 }
732 }
733 netif_wake_queue(dev);
734 for(i=0;i<CONFIG_DLCI_MAX;i++)
735 {
736 if(flp->master[i]!=NULL)
737 netif_wake_queue(flp->master[i]);
738 }
739
740 dev_kfree_skb(skb);
741 return NETDEV_TX_OK;
742 }
743
744 static void sdla_receive(struct net_device *dev)
745 {
746 struct net_device *master;
747 struct frad_local *flp;
748 struct dlci_local *dlp;
749 struct sk_buff *skb;
750
751 struct sdla_cmd *cmd;
752 struct buf_info *pbufi;
753 struct buf_entry *pbuf;
754
755 unsigned long flags;
756 int i=0, received, success, addr, buf_base, buf_top;
757 short dlci, len, len2, split;
758
759 flp = netdev_priv(dev);
760 success = 1;
761 received = addr = buf_top = buf_base = 0;
762 len = dlci = 0;
763 skb = NULL;
764 master = NULL;
765 cmd = NULL;
766 pbufi = NULL;
767 pbuf = NULL;
768
769 spin_lock_irqsave(&sdla_lock, flags);
770
771 switch (flp->type)
772 {
773 case SDLA_S502A:
774 case SDLA_S502E:
775 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
776 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
777 success = cmd->opp_flag;
778 if (!success)
779 break;
780
781 dlci = cmd->dlci;
782 len = cmd->length;
783 break;
784
785 case SDLA_S508:
786 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
787 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
788 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
789 success = pbuf->opp_flag;
790 if (!success)
791 break;
792
793 buf_top = pbufi->buf_top;
794 buf_base = pbufi->buf_base;
795 dlci = pbuf->dlci;
796 len = pbuf->length;
797 addr = pbuf->buf_addr;
798 break;
799 }
800
801 /* common code, find the DLCI and get the SKB */
802 if (success)
803 {
804 for (i=0;i<CONFIG_DLCI_MAX;i++)
805 if (flp->dlci[i] == dlci)
806 break;
807
808 if (i == CONFIG_DLCI_MAX)
809 {
810 printk(KERN_NOTICE "%s: Received packet from invalid DLCI %i, ignoring.", dev->name, dlci);
811 dev->stats.rx_errors++;
812 success = 0;
813 }
814 }
815
816 if (success)
817 {
818 master = flp->master[i];
819 skb = dev_alloc_skb(len + sizeof(struct frhdr));
820 if (skb == NULL)
821 {
822 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
823 dev->stats.rx_dropped++;
824 success = 0;
825 }
826 else
827 skb_reserve(skb, sizeof(struct frhdr));
828 }
829
830 /* pick up the data */
831 switch (flp->type)
832 {
833 case SDLA_S502A:
834 case SDLA_S502E:
835 if (success)
836 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
837
838 SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
839 cmd->opp_flag = 0;
840 break;
841
842 case SDLA_S508:
843 if (success)
844 {
845 /* is this buffer split off the end of the internal ring buffer */
846 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
847 len2 = len - split;
848
849 __sdla_read(dev, addr, skb_put(skb, len2), len2);
850 if (split)
851 __sdla_read(dev, buf_base, skb_put(skb, split), split);
852 }
853
854 /* increment the buffer we're looking at */
855 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
856 flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
857 pbuf->opp_flag = 0;
858 break;
859 }
860
861 if (success)
862 {
863 dev->stats.rx_packets++;
864 dlp = netdev_priv(master);
865 (*dlp->receive)(skb, master);
866 }
867
868 spin_unlock_irqrestore(&sdla_lock, flags);
869 }
870
871 static irqreturn_t sdla_isr(int dummy, void *dev_id)
872 {
873 struct net_device *dev;
874 struct frad_local *flp;
875 char byte;
876
877 dev = dev_id;
878
879 flp = netdev_priv(dev);
880
881 if (!flp->initialized)
882 {
883 printk(KERN_WARNING "%s: irq %d for uninitialized device.\n",
884 dev->name, dev->irq);
885 return IRQ_NONE;
886 }
887
888 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
889 switch (byte)
890 {
891 case SDLA_INTR_RX:
892 sdla_receive(dev);
893 break;
894
895 /* the command will get an error return, which is processed above */
896 case SDLA_INTR_MODEM:
897 case SDLA_INTR_STATUS:
898 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
899 break;
900
901 case SDLA_INTR_TX:
902 case SDLA_INTR_COMPLETE:
903 case SDLA_INTR_TIMER:
904 printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, byte);
905 break;
906 }
907
908 /* the S502E requires a manual acknowledgement of the interrupt */
909 if (flp->type == SDLA_S502E)
910 {
911 flp->state &= ~SDLA_S502E_INTACK;
912 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
913 flp->state |= SDLA_S502E_INTACK;
914 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
915 }
916
917 /* this clears the byte, informing the Z80 we're done */
918 byte = 0;
919 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
920 return IRQ_HANDLED;
921 }
922
923 static void sdla_poll(unsigned long device)
924 {
925 struct net_device *dev;
926 struct frad_local *flp;
927
928 dev = (struct net_device *) device;
929 flp = netdev_priv(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 = kmalloc(mem.len, GFP_KERNEL);
1215 if (!temp)
1216 return(-ENOMEM);
1217 if(copy_from_user(temp, mem.data, mem.len))
1218 {
1219 kfree(temp);
1220 return -EFAULT;
1221 }
1222 sdla_write(dev, mem.addr, temp, mem.len);
1223 kfree(temp);
1224 }
1225 return(0);
1226 }
1227
1228 static int sdla_reconfig(struct net_device *dev)
1229 {
1230 struct frad_local *flp;
1231 struct conf_data data;
1232 int i, len;
1233
1234 flp = netdev_priv(dev);
1235
1236 len = 0;
1237 for(i=0;i<CONFIG_DLCI_MAX;i++)
1238 if (flp->dlci[i])
1239 data.dlci[len++] = flp->dlci[i];
1240 len *= 2;
1241
1242 memcpy(&data, &flp->config, sizeof(struct frad_conf));
1243 len += sizeof(struct frad_conf);
1244
1245 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1246 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
1247 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
1248
1249 return(0);
1250 }
1251
1252 static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1253 {
1254 struct frad_local *flp;
1255
1256 if(!capable(CAP_NET_ADMIN))
1257 return -EPERM;
1258
1259 flp = netdev_priv(dev);
1260
1261 if (!flp->initialized)
1262 return(-EINVAL);
1263
1264 switch (cmd)
1265 {
1266 case FRAD_GET_CONF:
1267 case FRAD_SET_CONF:
1268 return(sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF));
1269
1270 case SDLA_IDENTIFY:
1271 ifr->ifr_flags = flp->type;
1272 break;
1273
1274 case SDLA_CPUSPEED:
1275 return(sdla_cpuspeed(dev, ifr));
1276
1277 /* ==========================================================
1278 NOTE: This is rather a useless action right now, as the
1279 current driver does not support protocols other than
1280 FR. However, Sangoma has modules for a number of
1281 other protocols in the works.
1282 ============================================================*/
1283 case SDLA_PROTOCOL:
1284 if (flp->configured)
1285 return(-EALREADY);
1286
1287 switch (ifr->ifr_flags)
1288 {
1289 case ARPHRD_FRAD:
1290 dev->type = ifr->ifr_flags;
1291 break;
1292 default:
1293 return(-ENOPROTOOPT);
1294 }
1295 break;
1296
1297 case SDLA_CLEARMEM:
1298 sdla_clear(dev);
1299 break;
1300
1301 case SDLA_WRITEMEM:
1302 case SDLA_READMEM:
1303 if(!capable(CAP_SYS_RAWIO))
1304 return -EPERM;
1305 return(sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM));
1306
1307 case SDLA_START:
1308 sdla_start(dev);
1309 break;
1310
1311 case SDLA_STOP:
1312 sdla_stop(dev);
1313 break;
1314
1315 default:
1316 return(-EOPNOTSUPP);
1317 }
1318 return(0);
1319 }
1320
1321 static int sdla_change_mtu(struct net_device *dev, int new_mtu)
1322 {
1323 struct frad_local *flp;
1324
1325 flp = netdev_priv(dev);
1326
1327 if (netif_running(dev))
1328 return(-EBUSY);
1329
1330 /* for now, you can't change the MTU! */
1331 return(-EOPNOTSUPP);
1332 }
1333
1334 static int sdla_set_config(struct net_device *dev, struct ifmap *map)
1335 {
1336 struct frad_local *flp;
1337 int i;
1338 char byte;
1339 unsigned base;
1340 int err = -EINVAL;
1341
1342 flp = netdev_priv(dev);
1343
1344 if (flp->initialized)
1345 return(-EINVAL);
1346
1347 for(i=0; i < ARRAY_SIZE(valid_port); i++)
1348 if (valid_port[i] == map->base_addr)
1349 break;
1350
1351 if (i == ARRAY_SIZE(valid_port))
1352 return(-EINVAL);
1353
1354 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
1355 printk(KERN_WARNING "SDLA: io-port 0x%04lx in use \n", dev->base_addr);
1356 return(-EINVAL);
1357 }
1358 base = map->base_addr;
1359
1360 /* test for card types, S502A, S502E, S507, S508 */
1361 /* these tests shut down the card completely, so clear the state */
1362 flp->type = SDLA_UNKNOWN;
1363 flp->state = 0;
1364
1365 for(i=1;i<SDLA_IO_EXTENTS;i++)
1366 if (inb(base + i) != 0xFF)
1367 break;
1368
1369 if (i == SDLA_IO_EXTENTS) {
1370 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
1371 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
1372 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
1373 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
1374 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1375 flp->type = SDLA_S502E;
1376 goto got_type;
1377 }
1378 }
1379 }
1380
1381 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
1382 if (inb(base + i) != byte)
1383 break;
1384
1385 if (i == SDLA_IO_EXTENTS) {
1386 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1387 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
1388 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
1389 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
1390 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1391 flp->type = SDLA_S507;
1392 goto got_type;
1393 }
1394 }
1395 }
1396
1397 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1398 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
1399 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
1400 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
1401 outb(SDLA_HALT, base + SDLA_REG_CONTROL);
1402 flp->type = SDLA_S508;
1403 goto got_type;
1404 }
1405 }
1406
1407 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
1408 if (inb(base + SDLA_S502_STS) == 0x40) {
1409 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1410 if (inb(base + SDLA_S502_STS) == 0x40) {
1411 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
1412 if (inb(base + SDLA_S502_STS) == 0x44) {
1413 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
1414 flp->type = SDLA_S502A;
1415 goto got_type;
1416 }
1417 }
1418 }
1419
1420 printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
1421 err = -ENODEV;
1422 goto fail;
1423
1424 got_type:
1425 switch(base) {
1426 case 0x270:
1427 case 0x280:
1428 case 0x380:
1429 case 0x390:
1430 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1431 goto fail;
1432 }
1433
1434 switch (map->irq) {
1435 case 2:
1436 if (flp->type != SDLA_S502E)
1437 goto fail;
1438 break;
1439
1440 case 10:
1441 case 11:
1442 case 12:
1443 case 15:
1444 case 4:
1445 if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
1446 goto fail;
1447 break;
1448 case 3:
1449 case 5:
1450 case 7:
1451 if (flp->type == SDLA_S502A)
1452 goto fail;
1453 break;
1454
1455 default:
1456 goto fail;
1457 }
1458
1459 err = -EAGAIN;
1460 if (request_irq(dev->irq, &sdla_isr, 0, dev->name, dev))
1461 goto fail;
1462
1463 if (flp->type == SDLA_S507) {
1464 switch(dev->irq) {
1465 case 3:
1466 flp->state = SDLA_S507_IRQ3;
1467 break;
1468 case 4:
1469 flp->state = SDLA_S507_IRQ4;
1470 break;
1471 case 5:
1472 flp->state = SDLA_S507_IRQ5;
1473 break;
1474 case 7:
1475 flp->state = SDLA_S507_IRQ7;
1476 break;
1477 case 10:
1478 flp->state = SDLA_S507_IRQ10;
1479 break;
1480 case 11:
1481 flp->state = SDLA_S507_IRQ11;
1482 break;
1483 case 12:
1484 flp->state = SDLA_S507_IRQ12;
1485 break;
1486 case 15:
1487 flp->state = SDLA_S507_IRQ15;
1488 break;
1489 }
1490 }
1491
1492 for(i=0; i < ARRAY_SIZE(valid_mem); i++)
1493 if (valid_mem[i] == map->mem_start)
1494 break;
1495
1496 err = -EINVAL;
1497 if (i == ARRAY_SIZE(valid_mem))
1498 goto fail2;
1499
1500 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
1501 goto fail2;
1502
1503 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
1504 goto fail2;
1505
1506 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
1507 goto fail2;
1508
1509 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
1510 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
1511 switch(flp->type) {
1512 case SDLA_S502A:
1513 case SDLA_S502E:
1514 switch (map->mem_start >> 16) {
1515 case 0x0A:
1516 byte |= SDLA_S502_SEG_A;
1517 break;
1518 case 0x0C:
1519 byte |= SDLA_S502_SEG_C;
1520 break;
1521 case 0x0D:
1522 byte |= SDLA_S502_SEG_D;
1523 break;
1524 case 0x0E:
1525 byte |= SDLA_S502_SEG_E;
1526 break;
1527 }
1528 break;
1529 case SDLA_S507:
1530 switch (map->mem_start >> 16) {
1531 case 0x0A:
1532 byte |= SDLA_S507_SEG_A;
1533 break;
1534 case 0x0B:
1535 byte |= SDLA_S507_SEG_B;
1536 break;
1537 case 0x0C:
1538 byte |= SDLA_S507_SEG_C;
1539 break;
1540 case 0x0E:
1541 byte |= SDLA_S507_SEG_E;
1542 break;
1543 }
1544 break;
1545 case SDLA_S508:
1546 switch (map->mem_start >> 16) {
1547 case 0x0A:
1548 byte |= SDLA_S508_SEG_A;
1549 break;
1550 case 0x0C:
1551 byte |= SDLA_S508_SEG_C;
1552 break;
1553 case 0x0D:
1554 byte |= SDLA_S508_SEG_D;
1555 break;
1556 case 0x0E:
1557 byte |= SDLA_S508_SEG_E;
1558 break;
1559 }
1560 break;
1561 }
1562
1563 /* set the memory bits, and enable access */
1564 outb(byte, base + SDLA_REG_PC_WINDOW);
1565
1566 switch(flp->type)
1567 {
1568 case SDLA_S502E:
1569 flp->state = SDLA_S502E_ENABLE;
1570 break;
1571 case SDLA_S507:
1572 flp->state |= SDLA_MEMEN;
1573 break;
1574 case SDLA_S508:
1575 flp->state = SDLA_MEMEN;
1576 break;
1577 }
1578 outb(flp->state, base + SDLA_REG_CONTROL);
1579
1580 dev->irq = map->irq;
1581 dev->base_addr = base;
1582 dev->mem_start = map->mem_start;
1583 dev->mem_end = dev->mem_start + 0x2000;
1584 flp->initialized = 1;
1585 return 0;
1586
1587 fail2:
1588 free_irq(map->irq, dev);
1589 fail:
1590 release_region(base, SDLA_IO_EXTENTS);
1591 return err;
1592 }
1593
1594 static const struct net_device_ops sdla_netdev_ops = {
1595 .ndo_open = sdla_open,
1596 .ndo_stop = sdla_close,
1597 .ndo_do_ioctl = sdla_ioctl,
1598 .ndo_set_config = sdla_set_config,
1599 .ndo_start_xmit = sdla_transmit,
1600 .ndo_change_mtu = sdla_change_mtu,
1601 };
1602
1603 static void setup_sdla(struct net_device *dev)
1604 {
1605 struct frad_local *flp = netdev_priv(dev);
1606
1607 netdev_boot_setup_check(dev);
1608
1609 dev->netdev_ops = &sdla_netdev_ops;
1610 dev->flags = 0;
1611 dev->type = 0xFFFF;
1612 dev->hard_header_len = 0;
1613 dev->addr_len = 0;
1614 dev->mtu = SDLA_MAX_MTU;
1615
1616 flp->activate = sdla_activate;
1617 flp->deactivate = sdla_deactivate;
1618 flp->assoc = sdla_assoc;
1619 flp->deassoc = sdla_deassoc;
1620 flp->dlci_conf = sdla_dlci_conf;
1621
1622 init_timer(&flp->timer);
1623 flp->timer.expires = 1;
1624 flp->timer.data = (unsigned long) dev;
1625 flp->timer.function = sdla_poll;
1626 }
1627
1628 static struct net_device *sdla;
1629
1630 static int __init init_sdla(void)
1631 {
1632 int err;
1633
1634 printk("%s.\n", version);
1635
1636 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0", setup_sdla);
1637 if (!sdla)
1638 return -ENOMEM;
1639
1640 err = register_netdev(sdla);
1641 if (err)
1642 free_netdev(sdla);
1643
1644 return err;
1645 }
1646
1647 static void __exit exit_sdla(void)
1648 {
1649 struct frad_local *flp = netdev_priv(sdla);
1650
1651 unregister_netdev(sdla);
1652 if (flp->initialized) {
1653 free_irq(sdla->irq, sdla);
1654 release_region(sdla->base_addr, SDLA_IO_EXTENTS);
1655 }
1656 del_timer_sync(&flp->timer);
1657 free_netdev(sdla);
1658 }
1659
1660 MODULE_LICENSE("GPL");
1661
1662 module_init(init_sdla);
1663 module_exit(exit_sdla);
Linux with added FPC-III support