6b13f685e
 김민수
BSP 최초 추가
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
|
/* Derived from Applicom driver ac.c for SCO Unix */
/* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */
/* dwmw2@infradead.org 30/8/98 */
/* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $ */
/* This module is for Linux 2.1 and 2.2 series kernels. */
/*****************************************************************************/
/* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt */
/* ceci pour reseter correctement apres une sortie sauvage */
/* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption, */
/* LoopCount n'etait pas initialise a 0. */
/* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte */
/* pour liberer le bus */
/* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */
/* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */
/* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */
/* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */
/* addresses de base des cartes, IOCTL 6 plus complet */
/* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */
/* de code autre que le texte V2.6.1 en V2.8.0 */
/*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/miscdevice.h>
#include <linux/pci.h>
#include <linux/wait.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include "applicom.h"
/* NOTE: We use for loops with {write,read}b() instead of
memcpy_{from,to}io throughout this driver. This is because
the board doesn't correctly handle word accesses - only
bytes.
*/
#undef DEBUG
#define MAX_BOARD 8 /* maximum of pc board possible */
#define MAX_ISA_BOARD 4
#define LEN_RAM_IO 0x800
#define AC_MINOR 157
#ifndef PCI_VENDOR_ID_APPLICOM
#define PCI_VENDOR_ID_APPLICOM 0x1389
#define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001
#define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002
#define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003
#endif
static DEFINE_MUTEX(ac_mutex);
static char *applicom_pci_devnames[] = {
"PCI board",
"PCI2000IBS / PCI2000CAN",
"PCI2000PFB"
};
static struct pci_device_id applicom_pci_tbl[] = {
{ PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC) },
{ PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN) },
{ PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, applicom_pci_tbl);
MODULE_AUTHOR("David Woodhouse & Applicom International");
MODULE_DESCRIPTION("Driver for Applicom Profibus card");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(AC_MINOR);
MODULE_SUPPORTED_DEVICE("ac");
static struct applicom_board {
unsigned long PhysIO;
void __iomem *RamIO;
wait_queue_head_t FlagSleepSend;
long irq;
spinlock_t mutex;
} apbs[MAX_BOARD];
static unsigned int irq = 0; /* interrupt number IRQ */
static unsigned long mem = 0; /* physical segment of board */
module_param(irq, uint, 0);
MODULE_PARM_DESC(irq, "IRQ of the Applicom board");
module_param(mem, ulong, 0);
MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board");
static unsigned int numboards; /* number of installed boards */
static volatile unsigned char Dummy;
static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec);
static unsigned int WriteErrorCount; /* number of write error */
static unsigned int ReadErrorCount; /* number of read error */
static unsigned int DeviceErrorCount; /* number of device error */
static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *);
static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *);
static long ac_ioctl(struct file *, unsigned int, unsigned long);
static irqreturn_t ac_interrupt(int, void *);
static const struct file_operations ac_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = ac_read,
.write = ac_write,
.unlocked_ioctl = ac_ioctl,
};
static struct miscdevice ac_miscdev = {
AC_MINOR,
"ac",
&ac_fops
};
static int dummy; /* dev_id for request_irq() */
static int ac_register_board(unsigned long physloc, void __iomem *loc,
unsigned char boardno)
{
volatile unsigned char byte_reset_it;
if((readb(loc + CONF_END_TEST) != 0x00) ||
(readb(loc + CONF_END_TEST + 1) != 0x55) ||
(readb(loc + CONF_END_TEST + 2) != 0xAA) ||
(readb(loc + CONF_END_TEST + 3) != 0xFF))
return 0;
if (!boardno)
boardno = readb(loc + NUMCARD_OWNER_TO_PC);
if (!boardno || boardno > MAX_BOARD) {
printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).
",
boardno, physloc, MAX_BOARD);
return 0;
}
if (apbs[boardno - 1].RamIO) {
printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)
",
boardno, physloc, boardno, apbs[boardno-1].PhysIO);
return 0;
}
boardno--;
apbs[boardno].PhysIO = physloc;
apbs[boardno].RamIO = loc;
init_waitqueue_head(&apbs[boardno].FlagSleepSend);
spin_lock_init(&apbs[boardno].mutex);
byte_reset_it = readb(loc + RAM_IT_TO_PC);
numboards++;
return boardno + 1;
}
static void __exit applicom_exit(void)
{
unsigned int i;
misc_deregister(&ac_miscdev);
for (i = 0; i < MAX_BOARD; i++) {
if (!apbs[i].RamIO)
continue;
if (apbs[i].irq)
free_irq(apbs[i].irq, &dummy);
iounmap(apbs[i].RamIO);
}
}
static int __init applicom_init(void)
{
int i, numisa = 0;
struct pci_dev *dev = NULL;
void __iomem *RamIO;
int boardno, ret;
printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $
");
/* No mem and irq given - check for a PCI card */
while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) {
if (!pci_match_id(applicom_pci_tbl, dev))
continue;
if (pci_enable_device(dev))
return -EIO;
RamIO = ioremap_nocache(pci_resource_start(dev, 0), LEN_RAM_IO);
if (!RamIO) {
printk(KERN_INFO "ac.o: Failed to ioremap PCI memory "
"space at 0x%llx
",
(unsigned long long)pci_resource_start(dev, 0));
pci_disable_device(dev);
return -EIO;
}
printk(KERN_INFO "Applicom %s found at mem 0x%llx, irq %d
",
applicom_pci_devnames[dev->device-1],
(unsigned long long)pci_resource_start(dev, 0),
dev->irq);
boardno = ac_register_board(pci_resource_start(dev, 0),
RamIO, 0);
if (!boardno) {
printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.
");
iounmap(RamIO);
pci_disable_device(dev);
continue;
}
if (request_irq(dev->irq, &ac_interrupt, IRQF_SHARED, "Applicom PCI", &dummy)) {
printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.
", dev->irq);
iounmap(RamIO);
pci_disable_device(dev);
apbs[boardno - 1].RamIO = NULL;
continue;
}
/* Enable interrupts. */
writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC);
apbs[boardno - 1].irq = dev->irq;
}
/* Finished with PCI cards. If none registered,
* and there was no mem/irq specified, exit */
if (!mem || !irq) {
if (numboards)
goto fin;
else {
printk(KERN_INFO "ac.o: No PCI boards found.
");
printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.
");
return -ENXIO;
}
}
/* Now try the specified ISA cards */
for (i = 0; i < MAX_ISA_BOARD; i++) {
RamIO = ioremap_nocache(mem + (LEN_RAM_IO * i), LEN_RAM_IO);
if (!RamIO) {
printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)
", i + 1);
continue;
}
if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i),
RamIO,i+1))) {
iounmap(RamIO);
continue;
}
printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d
", mem + (LEN_RAM_IO*i), irq);
if (!numisa) {
if (request_irq(irq, &ac_interrupt, IRQF_SHARED, "Applicom ISA", &dummy)) {
printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.
", irq);
iounmap(RamIO);
apbs[boardno - 1].RamIO = NULL;
}
else
apbs[boardno - 1].irq = irq;
}
else
apbs[boardno - 1].irq = 0;
numisa++;
}
if (!numisa)
printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found "
"at mem 0x%lx
", mem);
fin:
init_waitqueue_head(&FlagSleepRec);
WriteErrorCount = 0;
ReadErrorCount = 0;
DeviceErrorCount = 0;
if (numboards) {
ret = misc_register(&ac_miscdev);
if (ret) {
printk(KERN_WARNING "ac.o: Unable to register misc device
");
goto out;
}
for (i = 0; i < MAX_BOARD; i++) {
int serial;
char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
if (!apbs[i].RamIO)
continue;
for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
boardname[serial] = 0;
printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d",
i+1, boardname,
(int)(readb(apbs[i].RamIO + VERS) >> 4),
(int)(readb(apbs[i].RamIO + VERS) & 0xF));
serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) +
(readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) +
(readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
if (serial != 0)
printk(" S/N %d
", serial);
else
printk("
");
}
return 0;
}
else
return -ENXIO;
out:
for (i = 0; i < MAX_BOARD; i++) {
if (!apbs[i].RamIO)
continue;
if (apbs[i].irq)
free_irq(apbs[i].irq, &dummy);
iounmap(apbs[i].RamIO);
}
return ret;
}
module_init(applicom_init);
module_exit(applicom_exit);
static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos)
{
unsigned int NumCard; /* Board number 1 -> 8 */
unsigned int IndexCard; /* Index board number 0 -> 7 */
unsigned char TicCard; /* Board TIC to send */
unsigned long flags; /* Current priority */
struct st_ram_io st_loc;
struct mailbox tmpmailbox;
#ifdef DEBUG
int c;
#endif
DECLARE_WAITQUEUE(wait, current);
if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
static int warncount = 5;
if (warncount) {
printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd
",
count, sizeof(struct st_ram_io) + sizeof(struct mailbox));
warncount--;
}
return -EINVAL;
}
if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io)))
return -EFAULT;
if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)],
sizeof(struct mailbox)))
return -EFAULT;
NumCard = st_loc.num_card; /* board number to send */
TicCard = st_loc.tic_des_from_pc; /* tic number to send */
IndexCard = NumCard - 1;
if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO)
return -EINVAL;
#ifdef DEBUG
printk("Write to applicom card #%d. struct st_ram_io follows:",
IndexCard+1);
for (c = 0; c < sizeof(struct st_ram_io);) {
printk("
%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]);
for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
printk(" %2.2X", ((unsigned char *) &st_loc)[c]);
}
}
printk("
struct mailbox follows:");
for (c = 0; c < sizeof(struct mailbox);) {
printk("
%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]);
for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]);
}
}
printk("
");
#endif
spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
/* Test octet ready correct */
if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) {
Dummy = readb(apbs[IndexCard].RamIO + VERS);
spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d
",
IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY));
DeviceErrorCount++;
return -EIO;
}
/* Place ourselves on the wait queue */
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
/* Check whether the card is ready for us */
while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) {
Dummy = readb(apbs[IndexCard].RamIO + VERS);
/* It's busy. Sleep. */
spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
schedule();
if (signal_pending(current)) {
remove_wait_queue(&apbs[IndexCard].FlagSleepSend,
&wait);
return -EINTR;
}
spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
set_current_state(TASK_INTERRUPTIBLE);
}
/* We may not have actually slept */
set_current_state(TASK_RUNNING);
remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
/* Which is best - lock down the pages with rawio and then
copy directly, or use bounce buffers? For now we do the latter
because it works with 2.2 still */
{
unsigned char *from = (unsigned char *) &tmpmailbox;
void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC;
int c;
for (c = 0; c < sizeof(struct mailbox); c++)
writeb(*(from++), to++);
}
writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC);
writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC);
writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC);
writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
Dummy = readb(apbs[IndexCard].RamIO + VERS);
spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
return 0;
}
static int do_ac_read(int IndexCard, char __user *buf,
struct st_ram_io *st_loc, struct mailbox *mailbox)
{
void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC;
unsigned char *to = (unsigned char *)mailbox;
#ifdef DEBUG
int c;
#endif
st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC);
st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
{
int c;
for (c = 0; c < sizeof(struct mailbox); c++)
*(to++) = readb(from++);
}
writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC);
writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC),
apbs[IndexCard].RamIO + TIC_ACK_FROM_PC);
writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY);
writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
Dummy = readb(apbs[IndexCard].RamIO + VERS);
#ifdef DEBUG
printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard);
for (c = 0; c < sizeof(struct st_ram_io);) {
printk("
%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]);
for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
printk(" %2.2X", ((unsigned char *)st_loc)[c]);
}
}
printk("
struct mailbox follows:");
for (c = 0; c < sizeof(struct mailbox);) {
printk("
%5.5X: %2.2X", c, ((unsigned char *)mailbox)[c]);
for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
printk(" %2.2X", ((unsigned char *)mailbox)[c]);
}
}
printk("
");
#endif
return (sizeof(struct st_ram_io) + sizeof(struct mailbox));
}
static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr)
{
unsigned long flags;
unsigned int i;
unsigned char tmp;
int ret = 0;
DECLARE_WAITQUEUE(wait, current);
#ifdef DEBUG
int loopcount=0;
#endif
/* No need to ratelimit this. Only root can trigger it anyway */
if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
printk( KERN_WARNING "Hmmm. read() of Applicom card, length %zd != expected %zd
",
count,sizeof(struct st_ram_io) + sizeof(struct mailbox));
return -EINVAL;
}
while(1) {
/* Stick ourself on the wait queue */
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&FlagSleepRec, &wait);
/* Scan each board, looking for one which has a packet for us */
for (i=0; i < MAX_BOARD; i++) {
if (!apbs[i].RamIO)
continue;
spin_lock_irqsave(&apbs[i].mutex, flags);
tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY);
if (tmp == 2) {
struct st_ram_io st_loc;
struct mailbox mailbox;
/* Got a packet for us */
memset(&st_loc, 0, sizeof(st_loc));
ret = do_ac_read(i, buf, &st_loc, &mailbox);
spin_unlock_irqrestore(&apbs[i].mutex, flags);
set_current_state(TASK_RUNNING);
remove_wait_queue(&FlagSleepRec, &wait);
if (copy_to_user(buf, &st_loc, sizeof(st_loc)))
return -EFAULT;
if (copy_to_user(buf + sizeof(st_loc), &mailbox, sizeof(mailbox)))
return -EFAULT;
return tmp;
}
if (tmp > 2) {
/* Got an error */
Dummy = readb(apbs[i].RamIO + VERS);
spin_unlock_irqrestore(&apbs[i].mutex, flags);
set_current_state(TASK_RUNNING);
remove_wait_queue(&FlagSleepRec, &wait);
printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d
",
i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
DeviceErrorCount++;
return -EIO;
}
/* Nothing for us. Try the next board */
Dummy = readb(apbs[i].RamIO + VERS);
spin_unlock_irqrestore(&apbs[i].mutex, flags);
} /* per board */
/* OK - No boards had data for us. Sleep now */
schedule();
remove_wait_queue(&FlagSleepRec, &wait);
if (signal_pending(current))
return -EINTR;
#ifdef DEBUG
if (loopcount++ > 2) {
printk(KERN_DEBUG "Looping in ac_read. loopcount %d
", loopcount);
}
#endif
}
}
static irqreturn_t ac_interrupt(int vec, void *dev_instance)
{
unsigned int i;
unsigned int FlagInt;
unsigned int LoopCount;
int handled = 0;
// printk("Applicom interrupt on IRQ %d occurred
", vec);
LoopCount = 0;
do {
FlagInt = 0;
for (i = 0; i < MAX_BOARD; i++) {
/* Skip if this board doesn't exist */
if (!apbs[i].RamIO)
continue;
spin_lock(&apbs[i].mutex);
/* Skip if this board doesn't want attention */
if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) {
spin_unlock(&apbs[i].mutex);
continue;
}
handled = 1;
FlagInt = 1;
writeb(0, apbs[i].RamIO + RAM_IT_TO_PC);
if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) {
printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d
",
i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
DeviceErrorCount++;
}
if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) &&
(readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) {
printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d
",
i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY));
DeviceErrorCount++;
}
if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */
if (waitqueue_active(&FlagSleepRec)) {
wake_up_interruptible(&FlagSleepRec);
}
}
if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */
if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */
wake_up_interruptible(&apbs[i].FlagSleepSend);
}
}
Dummy = readb(apbs[i].RamIO + VERS);
if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) {
/* There's another int waiting on this card */
spin_unlock(&apbs[i].mutex);
i--;
} else {
spin_unlock(&apbs[i].mutex);
}
}
if (FlagInt)
LoopCount = 0;
else
LoopCount++;
} while(LoopCount < 2);
return IRQ_RETVAL(handled);
}
static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{ /* @ ADG ou ATO selon le cas */
int i;
unsigned char IndexCard;
void __iomem *pmem;
int ret = 0;
volatile unsigned char byte_reset_it;
struct st_ram_io *adgl;
void __user *argp = (void __user *)arg;
/* In general, the device is only openable by root anyway, so we're not
particularly concerned that bogus ioctls can flood the console. */
adgl = memdup_user(argp, sizeof(struct st_ram_io));
if (IS_ERR(adgl))
return PTR_ERR(adgl);
mutex_lock(&ac_mutex);
IndexCard = adgl->num_card-1;
if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
static int warncount = 10;
if (warncount) {
printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d
",(int)IndexCard+1);
warncount--;
}
kfree(adgl);
mutex_unlock(&ac_mutex);
return -EINVAL;
}
switch (cmd) {
case 0:
pmem = apbs[IndexCard].RamIO;
for (i = 0; i < sizeof(struct st_ram_io); i++)
((unsigned char *)adgl)[i]=readb(pmem++);
if (copy_to_user(argp, adgl, sizeof(struct st_ram_io)))
ret = -EFAULT;
break;
case 1:
pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
for (i = 0; i < 4; i++)
adgl->conf_end_test[i] = readb(pmem++);
for (i = 0; i < 2; i++)
adgl->error_code[i] = readb(pmem++);
for (i = 0; i < 4; i++)
adgl->parameter_error[i] = readb(pmem++);
pmem = apbs[IndexCard].RamIO + VERS;
adgl->vers = readb(pmem);
pmem = apbs[IndexCard].RamIO + TYPE_CARD;
for (i = 0; i < 20; i++)
adgl->reserv1[i] = readb(pmem++);
*(int *)&adgl->reserv1[20] =
(readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) +
(readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) +
(readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) );
if (copy_to_user(argp, adgl, sizeof(struct st_ram_io)))
ret = -EFAULT;
break;
case 2:
pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
for (i = 0; i < 10; i++)
writeb(0xff, pmem++);
writeb(adgl->data_from_pc_ready,
apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
for (i = 0; i < MAX_BOARD; i++) {
if (apbs[i].RamIO) {
byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC);
}
}
break;
case 3:
pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC;
writeb(adgl->tic_des_from_pc, pmem);
break;
case 4:
pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC;
adgl->tic_owner_to_pc = readb(pmem++);
adgl->numcard_owner_to_pc = readb(pmem);
if (copy_to_user(argp, adgl,sizeof(struct st_ram_io)))
ret = -EFAULT;
break;
case 5:
writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
break;
case 6:
printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)
");
printk(KERN_INFO "Number of installed boards . %d
", (int) numboards);
printk(KERN_INFO "Segment of board ........... %X
", (int) mem);
printk(KERN_INFO "Interrupt IRQ number ....... %d
", (int) irq);
for (i = 0; i < MAX_BOARD; i++) {
int serial;
char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
if (!apbs[i].RamIO)
continue;
for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
boardname[serial] = 0;
printk(KERN_INFO "Prom version board %d ....... V%d.%d %s",
i+1,
(int)(readb(apbs[i].RamIO + VERS) >> 4),
(int)(readb(apbs[i].RamIO + VERS) & 0xF),
boardname);
serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) +
(readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) +
(readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
if (serial != 0)
printk(" S/N %d
", serial);
else
printk("
");
}
if (DeviceErrorCount != 0)
printk(KERN_INFO "DeviceErrorCount ........... %d
", DeviceErrorCount);
if (ReadErrorCount != 0)
printk(KERN_INFO "ReadErrorCount ............. %d
", ReadErrorCount);
if (WriteErrorCount != 0)
printk(KERN_INFO "WriteErrorCount ............ %d
", WriteErrorCount);
if (waitqueue_active(&FlagSleepRec))
printk(KERN_INFO "Process in read pending
");
for (i = 0; i < MAX_BOARD; i++) {
if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend))
printk(KERN_INFO "Process in write pending board %d
",i+1);
}
break;
default:
ret = -ENOTTY;
break;
}
Dummy = readb(apbs[IndexCard].RamIO + VERS);
kfree(adgl);
mutex_unlock(&ac_mutex);
return 0;
}
|