File: /usr/src/linux/drivers/char/applicom.c
1 /* Derived from Applicom driver ac.c for SCO Unix */
2 /* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */
3 /* dwmw2@redhat.com 30/8/98 */
4 /* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $ */
5 /* This module is for Linux 2.1 and 2.2 series kernels. */
6 /*****************************************************************************/
7 /* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt */
8 /* ceci pour reseter correctement apres une sortie sauvage */
9 /* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption, */
10 /* LoopCount n'etait pas initialise a 0. */
11 /* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte */
12 /* pour liberer le bus */
13 /* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */
14 /* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */
15 /* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */
16 /* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */
17 /* adresses de base des cartes, IOCTL 6 plus complet */
18 /* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */
19 /* de code autre que le texte V2.6.1 en V2.8.0 */
20 /*****************************************************************************/
21
22
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/slab.h>
26 #include <asm/errno.h>
27 #include <asm/io.h>
28 #include <asm/uaccess.h>
29 #include <linux/miscdevice.h>
30 #include <linux/pci.h>
31 #include <linux/wait.h>
32 #include <linux/init.h>
33 #include <linux/compatmac.h>
34
35 #include "applicom.h"
36
37 #if LINUX_VERSION_CODE < 0x20300
38 /* These probably want adding to <linux/compatmac.h> */
39 #define init_waitqueue_head(x) do { *(x) = NULL; } while (0);
40 #define PCI_BASE_ADDRESS(dev) (dev->base_address[0])
41 #define DECLARE_WAIT_QUEUE_HEAD(x) struct wait_queue *x
42 #define __setup(x,y) /* */
43 #else
44 #define PCI_BASE_ADDRESS(dev) (dev->resource[0].start)
45 #endif
46
47 /* NOTE: We use for loops with {write,read}b() instead of
48 memcpy_{from,to}io throughout this driver. This is because
49 the board doesn't correctly handle word accesses - only
50 bytes.
51 */
52
53
54 #undef DEBUG
55
56 #define MAX_BOARD 8 /* maximum of pc board possible */
57 #define MAX_ISA_BOARD 4
58 #define LEN_RAM_IO 0x800
59 #define AC_MINOR 157
60
61 #ifndef PCI_VENDOR_ID_APPLICOM
62 #define PCI_VENDOR_ID_APPLICOM 0x1389
63 #define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001
64 #define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002
65 #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003
66 #endif
67 #define MAX_PCI_DEVICE_NUM 3
68
69 static char *applicom_pci_devnames[] = {
70 "PCI board",
71 "PCI2000IBS / PCI2000CAN",
72 "PCI2000PFB"
73 };
74
75 MODULE_AUTHOR("David Woodhouse & Applicom International");
76 MODULE_DESCRIPTION("Driver for Applicom Profibus card");
77 MODULE_LICENSE("GPL");
78 MODULE_PARM(irq, "i");
79 MODULE_PARM_DESC(irq, "IRQ of the Applicom board");
80 MODULE_PARM(mem, "i");
81 MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board");
82
83 MODULE_SUPPORTED_DEVICE("ac");
84
85
86 static struct applicom_board {
87 unsigned long PhysIO;
88 unsigned long RamIO;
89 wait_queue_head_t FlagSleepSend;
90 long irq;
91 spinlock_t mutex;
92 } apbs[MAX_BOARD];
93
94 static unsigned int irq = 0; /* interrupt number IRQ */
95 static unsigned long mem = 0; /* physical segment of board */
96
97 static unsigned int numboards; /* number of installed boards */
98 static volatile unsigned char Dummy;
99 static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec);
100 static unsigned int WriteErrorCount; /* number of write error */
101 static unsigned int ReadErrorCount; /* number of read error */
102 static unsigned int DeviceErrorCount; /* number of device error */
103
104 static ssize_t ac_read (struct file *, char *, size_t, loff_t *);
105 static ssize_t ac_write (struct file *, const char *, size_t, loff_t *);
106 static int ac_ioctl(struct inode *, struct file *, unsigned int,
107 unsigned long);
108 static void ac_interrupt(int, void *, struct pt_regs *);
109
110 static struct file_operations ac_fops = {
111 owner:THIS_MODULE,
112 llseek:no_llseek,
113 read:ac_read,
114 write:ac_write,
115 ioctl:ac_ioctl,
116 };
117
118 static struct miscdevice ac_miscdev = {
119 AC_MINOR,
120 "ac",
121 &ac_fops
122 };
123
124 static int dummy; /* dev_id for request_irq() */
125
126 static int ac_register_board(unsigned long physloc, unsigned long loc,
127 unsigned char boardno)
128 {
129 volatile unsigned char byte_reset_it;
130
131 if((readb(loc + CONF_END_TEST) != 0x00) ||
132 (readb(loc + CONF_END_TEST + 1) != 0x55) ||
133 (readb(loc + CONF_END_TEST + 2) != 0xAA) ||
134 (readb(loc + CONF_END_TEST + 3) != 0xFF))
135 return 0;
136
137 if (!boardno)
138 boardno = readb(loc + NUMCARD_OWNER_TO_PC);
139
140 if (!boardno && boardno > MAX_BOARD) {
141 printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n",
142 boardno, physloc, MAX_BOARD);
143 return 0;
144 }
145
146 if (apbs[boardno - 1].RamIO) {
147 printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n",
148 boardno, physloc, boardno, apbs[boardno-1].PhysIO);
149 return 0;
150 }
151
152 boardno--;
153
154 apbs[boardno].PhysIO = physloc;
155 apbs[boardno].RamIO = loc;
156 init_waitqueue_head(&apbs[boardno].FlagSleepSend);
157 spin_lock_init(&apbs[boardno].mutex);
158 byte_reset_it = readb(loc + RAM_IT_TO_PC);
159
160 numboards++;
161 return boardno + 1;
162 }
163
164 #ifdef MODULE
165
166 #define applicom_init init_module
167
168 void cleanup_module(void)
169 {
170 int i;
171
172 misc_deregister(&ac_miscdev);
173
174 for (i = 0; i < MAX_BOARD; i++) {
175
176 if (!apbs[i].RamIO)
177 continue;
178
179 iounmap((void *) apbs[i].RamIO);
180
181 if (apbs[i].irq)
182 free_irq(apbs[i].irq, &dummy);
183 }
184 }
185
186 #endif /* MODULE */
187
188 int __init applicom_init(void)
189 {
190 int i, numisa = 0;
191 struct pci_dev *dev = NULL;
192 void *RamIO;
193 int boardno;
194
195 printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n");
196
197 /* No mem and irq given - check for a PCI card */
198
199 while ( (dev = pci_find_class(PCI_CLASS_OTHERS << 16, dev))) {
200
201 if (dev->vendor != PCI_VENDOR_ID_APPLICOM)
202 continue;
203
204 if (dev->device > MAX_PCI_DEVICE_NUM || dev->device == 0)
205 continue;
206
207 if (pci_enable_device(dev))
208 return -EIO;
209
210 RamIO = ioremap(PCI_BASE_ADDRESS(dev), LEN_RAM_IO);
211
212 if (!RamIO) {
213 printk(KERN_INFO "ac.o: Failed to ioremap PCI memory space at 0x%lx\n", PCI_BASE_ADDRESS(dev));
214 return -EIO;
215 }
216
217 printk(KERN_INFO "Applicom %s found at mem 0x%lx, irq %d\n",
218 applicom_pci_devnames[dev->device-1], PCI_BASE_ADDRESS(dev),
219 dev->irq);
220
221 if (!(boardno = ac_register_board(PCI_BASE_ADDRESS(dev),
222 (unsigned long)RamIO,0))) {
223 printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n");
224 iounmap(RamIO);
225 continue;
226 }
227
228 if (request_irq(dev->irq, &ac_interrupt, SA_SHIRQ, "Applicom PCI", &dummy)) {
229 printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq);
230 iounmap(RamIO);
231 apbs[boardno - 1].RamIO = 0;
232 continue;
233 }
234
235 /* Enable interrupts. */
236
237 writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC);
238
239 apbs[boardno - 1].irq = dev->irq;
240 }
241
242 /* Finished with PCI cards. If none registered,
243 * and there was no mem/irq specified, exit */
244
245 if (!mem || !irq) {
246 if (numboards)
247 goto fin;
248 else {
249 printk(KERN_INFO "ac.o: No PCI boards found.\n");
250 printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n");
251 return -ENXIO;
252 }
253 }
254
255 /* Now try the specified ISA cards */
256
257 #warning "LEAK"
258 RamIO = ioremap(mem, LEN_RAM_IO * MAX_ISA_BOARD);
259
260 if (!RamIO)
261 printk(KERN_INFO "ac.o: Failed to ioremap ISA memory space at 0x%lx\n", mem);
262
263 for (i = 0; i < MAX_ISA_BOARD; i++) {
264 RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO);
265
266 if (!RamIO) {
267 printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1);
268 continue;
269 }
270
271 if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i),
272 (unsigned long)RamIO,i+1))) {
273 iounmap(RamIO);
274 continue;
275 }
276
277 printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq);
278
279 if (!numisa) {
280 if (request_irq(irq, &ac_interrupt, SA_SHIRQ, "Applicom ISA", &dummy)) {
281 printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq);
282 iounmap((void *) RamIO);
283 apbs[boardno - 1].RamIO = 0;
284 }
285 apbs[boardno - 1].irq = irq;
286 }
287 else
288 apbs[boardno - 1].irq = 0;
289
290 numisa++;
291 }
292
293 if (!numisa)
294 printk(KERN_WARNING"ac.o: No valid ISA Applicom boards found at mem 0x%lx\n",mem);
295
296 fin:
297 init_waitqueue_head(&FlagSleepRec);
298
299 WriteErrorCount = 0;
300 ReadErrorCount = 0;
301 DeviceErrorCount = 0;
302
303 if (numboards) {
304 misc_register(&ac_miscdev);
305 for (i = 0; i < MAX_BOARD; i++) {
306 int serial;
307 char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
308
309 if (!apbs[i].RamIO)
310 continue;
311
312 for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
313 boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
314
315 boardname[serial] = 0;
316
317
318 printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d",
319 i+1, boardname,
320 (int)(readb(apbs[i].RamIO + VERS) >> 4),
321 (int)(readb(apbs[i].RamIO + VERS) & 0xF));
322
323 serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) +
324 (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) +
325 (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
326
327 if (serial != 0)
328 printk(" S/N %d\n", serial);
329 else
330 printk("\n");
331 }
332 return 0;
333 }
334
335 else
336 return -ENXIO;
337 }
338
339
340 #ifndef MODULE
341 __initcall(applicom_init);
342 #endif
343
344 static ssize_t ac_write(struct file *file, const char *buf, size_t count, loff_t * ppos)
345 {
346 unsigned int NumCard; /* Board number 1 -> 8 */
347 unsigned int IndexCard; /* Index board number 0 -> 7 */
348 unsigned char TicCard; /* Board TIC to send */
349 unsigned long flags; /* Current priority */
350 struct st_ram_io st_loc;
351 struct mailbox tmpmailbox;
352 #ifdef DEBUG
353 int c;
354 #endif
355 DECLARE_WAITQUEUE(wait, current);
356
357 if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
358 static int warncount = 5;
359 if (warncount) {
360 printk(KERN_INFO "Hmmm. write() of Applicom card, length %d != expected %d\n",
361 count, sizeof(struct st_ram_io) + sizeof(struct mailbox));
362 warncount--;
363 }
364 return -EINVAL;
365 }
366
367 if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io)))
368 return -EFAULT;
369
370 if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)],
371 sizeof(struct mailbox)))
372 return -EFAULT;
373
374 NumCard = st_loc.num_card; /* board number to send */
375 TicCard = st_loc.tic_des_from_pc; /* tic number to send */
376 IndexCard = NumCard - 1;
377
378 if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO)
379 return -EINVAL;
380
381 #ifdef DEBUG
382 printk("Write to applicom card #%d. struct st_ram_io follows:",
383 IndexCard+1);
384
385 for (c = 0; c < sizeof(struct st_ram_io);) {
386
387 printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]);
388
389 for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
390 printk(" %2.2X", ((unsigned char *) &st_loc)[c]);
391 }
392 }
393
394 printk("\nstruct mailbox follows:");
395
396 for (c = 0; c < sizeof(struct mailbox);) {
397 printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]);
398
399 for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
400 printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]);
401 }
402 }
403
404 printk("\n");
405 #endif
406
407 spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
408
409 /* Test octet ready correct */
410 if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) {
411 Dummy = readb(apbs[IndexCard].RamIO + VERS);
412 spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
413 printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n",
414 IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY));
415 DeviceErrorCount++;
416 return -EIO;
417 }
418
419 /* Place ourselves on the wait queue */
420 set_current_state(TASK_INTERRUPTIBLE);
421 add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
422
423 /* Check whether the card is ready for us */
424 while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) {
425 Dummy = readb(apbs[IndexCard].RamIO + VERS);
426 /* It's busy. Sleep. */
427
428 spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
429 schedule();
430 if (signal_pending(current)) {
431 remove_wait_queue(&apbs[IndexCard].FlagSleepSend,
432 &wait);
433 return -EINTR;
434 }
435 spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
436 set_current_state(TASK_INTERRUPTIBLE);
437 }
438
439 /* We may not have actually slept */
440 current->state = TASK_RUNNING;
441 remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
442
443 writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
444
445 /* Which is best - lock down the pages with rawio and then
446 copy directly, or use bounce buffers? For now we do the latter
447 because it works with 2.2 still */
448 {
449 unsigned char *from = (unsigned char *) &tmpmailbox;
450 unsigned long to = (unsigned long) apbs[IndexCard].RamIO + RAM_FROM_PC;
451 int c;
452
453 for (c = 0; c < sizeof(struct mailbox); c++)
454 writeb(*(from++), to++);
455 }
456
457 writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC);
458 writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC);
459 writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC);
460 writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
461 writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
462 writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
463 Dummy = readb(apbs[IndexCard].RamIO + VERS);
464 spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
465 return 0;
466 }
467
468 static int do_ac_read(int IndexCard, char *buf)
469 {
470 struct st_ram_io st_loc;
471 struct mailbox tmpmailbox; /* bounce buffer - can't copy to user space with cli() */
472 unsigned long from = (unsigned long)apbs[IndexCard].RamIO + RAM_TO_PC;
473 unsigned char *to = (unsigned char *)&tmpmailbox;
474 #ifdef DEBUG
475 int c;
476 #endif
477
478 st_loc.tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC);
479 st_loc.numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
480
481
482 {
483 int c;
484
485 for (c = 0; c < sizeof(struct mailbox); c++)
486 *(to++) = readb(from++);
487 }
488 writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
489 writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC);
490 writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
491 writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC),
492 apbs[IndexCard].RamIO + TIC_ACK_FROM_PC);
493 writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
494 writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY);
495 writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
496 Dummy = readb(apbs[IndexCard].RamIO + VERS);
497
498 #ifdef DEBUG
499 printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard);
500
501 for (c = 0; c < sizeof(struct st_ram_io);) {
502 printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]);
503
504 for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
505 printk(" %2.2X", ((unsigned char *) &st_loc)[c]);
506 }
507 }
508
509 printk("\nstruct mailbox follows:");
510
511 for (c = 0; c < sizeof(struct mailbox);) {
512 printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]);
513
514 for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
515 printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]);
516 }
517 }
518 printk("\n");
519 #endif
520
521 #warning "Je suis stupide. DW. - copy*user in cli"
522
523 if (copy_to_user(buf, &st_loc, sizeof(struct st_ram_io)))
524 return -EFAULT;
525 if (copy_to_user(&buf[sizeof(struct st_ram_io)], &tmpmailbox, sizeof(struct mailbox)))
526 return -EFAULT;
527
528 return (sizeof(struct st_ram_io) + sizeof(struct mailbox));
529 }
530
531 static ssize_t ac_read (struct file *filp, char *buf, size_t count, loff_t *ptr)
532 {
533 unsigned long flags;
534 unsigned int i;
535 unsigned char tmp;
536 int ret = 0;
537 DECLARE_WAITQUEUE(wait, current);
538 #ifdef DEBUG
539 int loopcount=0;
540 #endif
541 /* No need to ratelimit this. Only root can trigger it anyway */
542 if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
543 printk( KERN_WARNING "Hmmm. read() of Applicom card, length %d != expected %d\n",
544 count,sizeof(struct st_ram_io) + sizeof(struct mailbox));
545 return -EINVAL;
546 }
547
548 while(1) {
549 /* Stick ourself on the wait queue */
550 set_current_state(TASK_INTERRUPTIBLE);
551 add_wait_queue(&FlagSleepRec, &wait);
552
553 /* Scan each board, looking for one which has a packet for us */
554 for (i=0; i < MAX_BOARD; i++) {
555 if (!apbs[i].RamIO)
556 continue;
557 spin_lock_irqsave(&apbs[i].mutex, flags);
558
559 tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY);
560
561 if (tmp == 2) {
562 /* Got a packet for us */
563 ret = do_ac_read(i, buf);
564 spin_unlock_irqrestore(&apbs[i].mutex, flags);
565 set_current_state(TASK_RUNNING);
566 remove_wait_queue(&FlagSleepRec, &wait);
567 return tmp;
568 }
569
570 if (tmp > 2) {
571 /* Got an error */
572 Dummy = readb(apbs[i].RamIO + VERS);
573
574 spin_unlock_irqrestore(&apbs[i].mutex, flags);
575 set_current_state(TASK_RUNNING);
576 remove_wait_queue(&FlagSleepRec, &wait);
577
578 printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d\n",
579 i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
580 DeviceErrorCount++;
581 return -EIO;
582 }
583
584 /* Nothing for us. Try the next board */
585 Dummy = readb(apbs[i].RamIO + VERS);
586 spin_unlock_irqrestore(&apbs[i].mutex, flags);
587
588 } /* per board */
589
590 /* OK - No boards had data for us. Sleep now */
591
592 schedule();
593 remove_wait_queue(&FlagSleepRec, &wait);
594
595 if (signal_pending(current))
596 return -EINTR;
597
598 #ifdef DEBUG
599 if (loopcount++ > 2) {
600 printk("Looping in ac_read. loopcount %d\n", loopcount);
601 }
602 #endif
603 }
604 }
605
606 static void ac_interrupt(int vec, void *dev_instance, struct pt_regs *regs)
607 {
608 unsigned int i;
609 unsigned int FlagInt;
610 unsigned int LoopCount;
611
612 // printk("Applicom interrupt on IRQ %d occurred\n", vec);
613
614 LoopCount = 0;
615
616 do {
617 FlagInt = 0;
618 for (i = 0; i < MAX_BOARD; i++) {
619
620 /* Skip if this board doesn't exist */
621 if (!apbs[i].RamIO)
622 continue;
623
624 spin_lock(&apbs[i].mutex);
625
626 /* Skip if this board doesn't want attention */
627 if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) {
628 spin_unlock(&apbs[i].mutex);
629 continue;
630 }
631
632 FlagInt = 1;
633 writeb(0, apbs[i].RamIO + RAM_IT_TO_PC);
634
635 if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) {
636 printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d\n",
637 i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
638 DeviceErrorCount++;
639 }
640
641 if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) &&
642 (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) {
643
644 printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d\n",
645 i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY));
646 DeviceErrorCount++;
647 }
648
649 if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */
650 if (waitqueue_active(&FlagSleepRec)) {
651 wake_up_interruptible(&FlagSleepRec);
652 }
653 }
654
655 if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */
656 if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */
657 wake_up_interruptible(&apbs[i].FlagSleepSend);
658 }
659 }
660 Dummy = readb(apbs[i].RamIO + VERS);
661
662 if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) {
663 /* There's another int waiting on this card */
664 spin_unlock(&apbs[i].mutex);
665 i--;
666 } else {
667 spin_unlock(&apbs[i].mutex);
668 }
669 }
670 if (FlagInt)
671 LoopCount = 0;
672 else
673 LoopCount++;
674 } while(LoopCount < 2);
675 }
676
677
678
679 static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
680
681 { /* @ ADG ou ATO selon le cas */
682 int i;
683 unsigned char IndexCard;
684 unsigned long pmem;
685 int ret = 0;
686 volatile unsigned char byte_reset_it;
687 struct st_ram_io *adgl;
688
689 /* In general, the device is only openable by root anyway, so we're not
690 particularly concerned that bogus ioctls can flood the console. */
691
692 adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL);
693 if (!adgl)
694 return -ENOMEM;
695
696 if (copy_from_user(adgl, (void *)arg,sizeof(struct st_ram_io))) {
697 kfree(adgl);
698 return -EFAULT;
699 }
700
701 IndexCard = adgl->num_card-1;
702
703 if(cmd != 0 && cmd != 6 &&
704 ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
705 static int warncount = 10;
706 if (warncount) {
707 printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1);
708 warncount--;
709 }
710 kfree(adgl);
711 return -EINVAL;
712 }
713
714 switch (cmd) {
715
716 case 0:
717 pmem = apbs[IndexCard].RamIO;
718 for (i = 0; i < sizeof(struct st_ram_io); i++)
719 ((unsigned char *)adgl)[i]=readb(pmem++);
720 if (copy_to_user((void *)arg, adgl, sizeof(struct st_ram_io)))
721 ret = -EFAULT;
722 break;
723 case 1:
724 pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
725 for (i = 0; i < 4; i++)
726 adgl->conf_end_test[i] = readb(pmem++);
727 for (i = 0; i < 2; i++)
728 adgl->error_code[i] = readb(pmem++);
729 for (i = 0; i < 4; i++)
730 adgl->parameter_error[i] = readb(pmem++);
731 pmem = apbs[IndexCard].RamIO + VERS;
732 adgl->vers = readb(pmem);
733 pmem = apbs[IndexCard].RamIO + TYPE_CARD;
734 for (i = 0; i < 20; i++)
735 adgl->reserv1[i] = readb(pmem++);
736 *(int *)&adgl->reserv1[20] =
737 (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) +
738 (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) +
739 (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) );
740
741 if (copy_to_user((void *)arg, adgl, sizeof(struct st_ram_io)))
742 ret = -EFAULT;
743 break;
744 case 2:
745 pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
746 for (i = 0; i < 10; i++)
747 writeb(0xff, pmem++);
748 writeb(adgl->data_from_pc_ready,
749 apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
750
751 writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
752
753 for (i = 0; i < MAX_BOARD; i++) {
754 if (apbs[i].RamIO) {
755 byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC);
756 }
757 }
758 break;
759 case 3:
760 pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC;
761 writeb(adgl->tic_des_from_pc, pmem);
762 break;
763 case 4:
764 pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC;
765 adgl->tic_owner_to_pc = readb(pmem++);
766 adgl->numcard_owner_to_pc = readb(pmem);
767 if (copy_to_user((void *)arg, adgl,sizeof(struct st_ram_io)))
768 ret = -EFAULT;
769 break;
770 case 5:
771 writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
772 writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
773 writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
774 writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
775 writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
776 break;
777 case 6:
778 printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)\n");
779 printk(KERN_INFO "Number of installed boards . %d\n", (int) numboards);
780 printk(KERN_INFO "Segment of board ........... %X\n", (int) mem);
781 printk(KERN_INFO "Interrupt IRQ number ....... %d\n", (int) irq);
782 for (i = 0; i < MAX_BOARD; i++) {
783 int serial;
784 char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
785
786 if (!apbs[i].RamIO)
787 continue;
788
789 for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
790 boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
791 boardname[serial] = 0;
792
793 printk(KERN_INFO "Prom version board %d ....... V%d.%d %s",
794 i+1,
795 (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4),
796 (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF),
797 boardname);
798
799
800 serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) +
801 (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) +
802 (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
803
804 if (serial != 0)
805 printk(" S/N %d\n", serial);
806 else
807 printk("\n");
808 }
809 if (DeviceErrorCount != 0)
810 printk(KERN_INFO "DeviceErrorCount ........... %d\n", DeviceErrorCount);
811 if (ReadErrorCount != 0)
812 printk(KERN_INFO "ReadErrorCount ............. %d\n", ReadErrorCount);
813 if (WriteErrorCount != 0)
814 printk(KERN_INFO "WriteErrorCount ............ %d\n", WriteErrorCount);
815 if (waitqueue_active(&FlagSleepRec))
816 printk(KERN_INFO "Process in read pending\n");
817 for (i = 0; i < MAX_BOARD; i++) {
818 if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend))
819 printk(KERN_INFO "Process in write pending board %d\n",i+1);
820 }
821 break;
822 default:
823 printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %d\n",cmd) ;
824 ret = -EINVAL;
825 break;
826 }
827 Dummy = readb(apbs[IndexCard].RamIO + VERS);
828 kfree(adgl);
829 return 0;
830 }
831
832 #ifndef MODULE
833 static int __init applicom_setup(char *str)
834 {
835 int ints[4];
836
837 (void) get_options(str, 4, ints);
838
839 if (ints[0] > 2) {
840 printk(KERN_WARNING "Too many arguments to 'applicom=', expected mem,irq only.\n");
841 }
842
843 if (ints[0] < 2) {
844 printk(KERN_INFO"applicom numargs: %d\n", ints[0]);
845 return 0;
846 }
847
848 mem = ints[1];
849 irq = ints[2];
850 return 1;
851 }
852
853 __setup("applicom=", applicom_setup);
854
855 #endif /* MODULE */
856
857