1 /*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version
5 * 2 of the License, or (at your option) any later version.
6 *
7 * Original driver code supplied by Multi-Tech
8 *
9 * Changes
10 * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree
11 * Obtain and use official major/minors
12 * Loader switched to a misc device
13 * (fixed range check bug as a side effect)
14 * Printk clean up
15 * 9/12/98 alan@redhat.com Rough port to 2.1.x
16 *
17 * 10/6/99 sameer Merged the ISA and PCI drivers to
18 * a new unified driver.
19 * 09/06/01 acme@conectiva.com.br use capable, not suser, do
20 * restore_flags on failure in
21 * isicom_send_break, verify put_user
22 * result
23 * ***********************************************************
24 *
25 * To use this driver you also need the support package. You
26 * can find this in RPM format on
27 * ftp://ftp.linux.org.uk/pub/linux/alan
28 *
29 * You can find the original tools for this direct from Multitech
30 * ftp://ftp.multitech.com/ISI-Cards/
31 *
32 * Having installed the cards the module options (/etc/modules.conf)
33 *
34 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
35 *
36 * Omit those entries for boards you don't have installed.
37 *
38 */
39
40 #include <linux/module.h>
41 #include <linux/version.h>
42 #include <linux/kernel.h>
43 #include <linux/tty.h>
44 #include <linux/termios.h>
45 #include <linux/fs.h>
46 #include <linux/sched.h>
47 #include <linux/serial.h>
48 #include <linux/mm.h>
49 #include <linux/miscdevice.h>
50 #include <linux/interrupt.h>
51 #include <linux/timer.h>
52 #include <linux/ioport.h>
53
54 #include <asm/segment.h>
55 #include <asm/uaccess.h>
56 #include <asm/io.h>
57 #include <asm/system.h>
58
59 #include <linux/pci.h>
60
61 #include <linux/isicom.h>
62
63 static struct pci_device_id isicom_pci_tbl[] = {
64 { VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
65 { VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
66 { VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
67 { VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
68 { VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
69 { VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
70 { VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
71 { VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
72 { VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
73 { 0 }
74 };
75 MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
76
77 static int isicom_refcount;
78 static int prev_card = 3; /* start servicing isi_card[0] */
79 static struct isi_board * irq_to_board[16];
80 static struct tty_driver isicom_normal, isicom_callout;
81 static struct tty_struct * isicom_table[PORT_COUNT];
82 static struct termios * isicom_termios[PORT_COUNT];
83 static struct termios * isicom_termios_locked[PORT_COUNT];
84
85 static struct isi_board isi_card[BOARD_COUNT];
86 static struct isi_port isi_ports[PORT_COUNT];
87
88 DECLARE_TASK_QUEUE(tq_isicom);
89
90 static struct timer_list tx;
91 static char re_schedule = 1;
92 #ifdef ISICOM_DEBUG
93 static unsigned long tx_count = 0;
94 #endif
95
96 static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
97
98 static void isicom_tx(unsigned long _data);
99 static void isicom_start(struct tty_struct * tty);
100
101 static unsigned char * tmp_buf = 0;
102 static DECLARE_MUTEX(tmp_buf_sem);
103
104 /* baud index mappings from linux defns to isi */
105
106 static signed char linuxb_to_isib[] = {
107 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17,
108 18, 19
109 };
110
111 /*
112 * Firmware loader driver specific routines
113 *
114 */
115
116 static struct file_operations ISILoad_fops = {
117 owner: THIS_MODULE,
118 ioctl: ISILoad_ioctl,
119 };
120
121 struct miscdevice isiloader_device = {
122 ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops
123 };
124
125
WaitTillCardIsFree(unsigned short base)126 static inline int WaitTillCardIsFree(unsigned short base)
127 {
128 unsigned long count=0;
129 while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000));
130 if (inw(base+0xe)&0x1)
131 return 0;
132 else
133 return 1;
134 }
135
ISILoad_ioctl(struct inode * inode,struct file * filp,unsigned int cmd,unsigned long arg)136 static int ISILoad_ioctl(struct inode *inode, struct file *filp,
137 unsigned int cmd, unsigned long arg)
138 {
139 unsigned int card, i, j, signature, status, portcount = 0;
140 unsigned short word_count, base;
141 bin_frame frame;
142 /* exec_record exec_rec; */
143
144 if(get_user(card, (int *)arg))
145 return -EFAULT;
146
147 if(card < 0 || card >= BOARD_COUNT)
148 return -ENXIO;
149
150 base=isi_card[card].base;
151
152 if(base==0)
153 return -ENXIO; /* disabled or not used */
154
155 switch(cmd) {
156 case MIOCTL_RESET_CARD:
157 if (!capable(CAP_SYS_ADMIN))
158 return -EPERM;
159 printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%x ",card+1,base);
160
161 inw(base+0x8);
162
163 for(i=jiffies+HZ/100;time_before(jiffies, i););
164
165 outw(0,base+0x8); /* Reset */
166
167 for(j=1;j<=3;j++) {
168 for(i=jiffies+HZ;time_before(jiffies, i););
169 printk(".");
170 }
171 signature=(inw(base+0x4)) & 0xff;
172 if (isi_card[card].isa) {
173
174 if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) {
175 #ifdef ISICOM_DEBUG
176 printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
177 #endif
178 printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
179 return -EIO;
180 }
181 }
182 else {
183 portcount = inw(base+0x2);
184 if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) {
185 #ifdef ISICOM_DEBUG
186 printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
187 #endif
188 printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
189 return -EIO;
190 }
191 }
192 switch(signature) {
193 case 0xa5:
194 case 0xbb:
195 case 0xdd:
196 if (isi_card[card].isa)
197 isi_card[card].port_count = 8;
198 else {
199 if (portcount == 4)
200 isi_card[card].port_count = 4;
201 else
202 isi_card[card].port_count = 8;
203 }
204 isi_card[card].shift_count = 12;
205 break;
206
207 case 0xcc: isi_card[card].port_count = 16;
208 isi_card[card].shift_count = 11;
209 break;
210
211 default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
212 #ifdef ISICOM_DEBUG
213 printk("Sig=0x%x\n",signature);
214 #endif
215 return -EIO;
216 }
217 printk("-Done\n");
218 return put_user(signature,(unsigned int*)arg);
219
220 case MIOCTL_LOAD_FIRMWARE:
221 if (!capable(CAP_SYS_ADMIN))
222 return -EPERM;
223
224 if(copy_from_user(&frame, (void *) arg, sizeof(bin_frame)))
225 return -EFAULT;
226
227 if (WaitTillCardIsFree(base))
228 return -EIO;
229
230 outw(0xf0,base); /* start upload sequence */
231 outw(0x00,base);
232 outw((frame.addr), base);/* lsb of adderess */
233
234 word_count=(frame.count >> 1) + frame.count % 2;
235 outw(word_count, base);
236 InterruptTheCard(base);
237
238 for(i=0;i<=0x2f;i++); /* a wee bit of delay */
239
240 if (WaitTillCardIsFree(base))
241 return -EIO;
242
243 if ((status=inw(base+0x4))!=0) {
244 printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
245 card+1, frame.addr, frame.count, status);
246 return -EIO;
247 }
248 outsw(base, (void *) frame.bin_data, word_count);
249
250 InterruptTheCard(base);
251
252 for(i=0;i<=0x0f;i++); /* another wee bit of delay */
253
254 if (WaitTillCardIsFree(base))
255 return -EIO;
256
257 if ((status=inw(base+0x4))!=0) {
258 printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status);
259 return -EIO;
260 }
261 return 0;
262
263 case MIOCTL_READ_FIRMWARE:
264 if (!capable(CAP_SYS_ADMIN))
265 return -EPERM;
266
267 if(copy_from_user(&frame, (void *) arg, sizeof(bin_header)))
268 return -EFAULT;
269
270 if (WaitTillCardIsFree(base))
271 return -EIO;
272
273 outw(0xf1,base); /* start download sequence */
274 outw(0x00,base);
275 outw((frame.addr), base);/* lsb of adderess */
276
277 word_count=(frame.count >> 1) + frame.count % 2;
278 outw(word_count+1, base);
279 InterruptTheCard(base);
280
281 for(i=0;i<=0xf;i++); /* a wee bit of delay */
282
283 if (WaitTillCardIsFree(base))
284 return -EIO;
285
286 if ((status=inw(base+0x4))!=0) {
287 printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
288 card+1, frame.addr, frame.count, status);
289 return -EIO;
290 }
291
292 inw(base);
293 insw(base, frame.bin_data, word_count);
294 InterruptTheCard(base);
295
296 for(i=0;i<=0x0f;i++); /* another wee bit of delay */
297
298 if (WaitTillCardIsFree(base))
299 return -EIO;
300
301 if ((status=inw(base+0x4))!=0) {
302 printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status);
303 return -EIO;
304 }
305
306 if(copy_to_user((void *) arg, &frame, sizeof(bin_frame)))
307 return -EFAULT;
308 return 0;
309
310 case MIOCTL_XFER_CTRL:
311 if (!capable(CAP_SYS_ADMIN))
312 return -EPERM;
313 if (WaitTillCardIsFree(base))
314 return -EIO;
315
316 outw(0xf2, base);
317 outw(0x800, base);
318 outw(0x0, base);
319 outw(0x0, base);
320 InterruptTheCard(base);
321 outw(0x0, base+0x4); /* for ISI4608 cards */
322
323 isi_card[card].status |= FIRMWARE_LOADED;
324 return 0;
325
326 default:
327 #ifdef ISICOM_DEBUG
328 printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd);
329 #endif
330 return -ENOIOCTLCMD;
331
332 }
333
334 }
335
336
337 /*
338 * ISICOM Driver specific routines ...
339 *
340 */
341
isicom_paranoia_check(struct isi_port const * port,kdev_t dev,const char * routine)342 static inline int isicom_paranoia_check(struct isi_port const * port, kdev_t dev,
343 const char * routine)
344 {
345 #ifdef ISICOM_DEBUG
346 static const char * badmagic =
347 KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n";
348 static const char * badport =
349 KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n";
350 if (!port) {
351 printk(badport, kdevname(dev), routine);
352 return 1;
353 }
354 if (port->magic != ISICOM_MAGIC) {
355 printk(badmagic, kdevname(dev), routine);
356 return 1;
357 }
358 #endif
359 return 0;
360 }
361
schedule_bh(struct isi_port * port)362 static inline void schedule_bh(struct isi_port * port)
363 {
364 queue_task(&port->bh_tqueue, &tq_isicom);
365 mark_bh(ISICOM_BH);
366 }
367
368 /* Transmitter */
369
isicom_tx(unsigned long _data)370 static void isicom_tx(unsigned long _data)
371 {
372 short count = (BOARD_COUNT-1), card, base;
373 short txcount, wait, wrd, residue, word_count, cnt;
374 struct isi_port * port;
375 struct tty_struct * tty;
376 unsigned long flags;
377
378 #ifdef ISICOM_DEBUG
379 ++tx_count;
380 #endif
381
382 /* find next active board */
383 card = (prev_card + 1) & 0x0003;
384 while(count-- > 0) {
385 if (isi_card[card].status & BOARD_ACTIVE)
386 break;
387 card = (card + 1) & 0x0003;
388 }
389 if (!(isi_card[card].status & BOARD_ACTIVE))
390 goto sched_again;
391
392 prev_card = card;
393
394 count = isi_card[card].port_count;
395 port = isi_card[card].ports;
396 base = isi_card[card].base;
397 for (;count > 0;count--, port++) {
398 /* port not active or tx disabled to force flow control */
399 if (!(port->status & ISI_TXOK))
400 continue;
401
402 tty = port->tty;
403 save_flags(flags); cli();
404 txcount = MIN(TX_SIZE, port->xmit_cnt);
405 if ((txcount <= 0) || tty->stopped || tty->hw_stopped) {
406 restore_flags(flags);
407 continue;
408 }
409 wait = 200;
410 while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
411 if (wait <= 0) {
412 restore_flags(flags);
413 #ifdef ISICOM_DEBUG
414 printk(KERN_DEBUG "ISICOM: isicom_tx:Card(0x%x) found busy.\n",
415 card);
416 #endif
417 continue;
418 }
419 if (!(inw(base + 0x02) & (1 << port->channel))) {
420 restore_flags(flags);
421 #ifdef ISICOM_DEBUG
422 printk(KERN_DEBUG "ISICOM: isicom_tx: cannot tx to 0x%x:%d.\n",
423 base, port->channel + 1);
424 #endif
425 continue;
426 }
427 #ifdef ISICOM_DEBUG
428 printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n",
429 txcount, port->channel+1);
430 #endif
431 outw((port->channel << isi_card[card].shift_count) | txcount
432 , base);
433 residue = NO;
434 wrd = 0;
435 while (1) {
436 cnt = MIN(txcount, (SERIAL_XMIT_SIZE - port->xmit_tail));
437 if (residue == YES) {
438 residue = NO;
439 if (cnt > 0) {
440 wrd |= (port->xmit_buf[port->xmit_tail] << 8);
441 port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
442 port->xmit_cnt--;
443 txcount--;
444 cnt--;
445 outw(wrd, base);
446 }
447 else {
448 outw(wrd, base);
449 break;
450 }
451 }
452 if (cnt <= 0) break;
453 word_count = cnt >> 1;
454 outsw(base, port->xmit_buf+port->xmit_tail, word_count);
455 port->xmit_tail = (port->xmit_tail + (word_count << 1)) &
456 (SERIAL_XMIT_SIZE - 1);
457 txcount -= (word_count << 1);
458 port->xmit_cnt -= (word_count << 1);
459 if (cnt & 0x0001) {
460 residue = YES;
461 wrd = port->xmit_buf[port->xmit_tail];
462 port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
463 port->xmit_cnt--;
464 txcount--;
465 }
466 }
467
468 InterruptTheCard(base);
469 if (port->xmit_cnt <= 0)
470 port->status &= ~ISI_TXOK;
471 if (port->xmit_cnt <= WAKEUP_CHARS)
472 schedule_bh(port);
473 restore_flags(flags);
474 }
475
476 /* schedule another tx for hopefully in about 10ms */
477 sched_again:
478 if (!re_schedule)
479 return;
480 init_timer(&tx);
481 tx.expires = jiffies + HZ/100;
482 tx.data = 0;
483 tx.function = isicom_tx;
484 add_timer(&tx);
485
486 return;
487 }
488
489 /* Interrupt handlers */
490
do_isicom_bh(void)491 static void do_isicom_bh(void)
492 {
493 run_task_queue(&tq_isicom);
494 }
495
496
497
isicom_bottomhalf(void * data)498 static void isicom_bottomhalf(void * data)
499 {
500 struct isi_port * port = (struct isi_port *) data;
501 struct tty_struct * tty = port->tty;
502
503 if (!tty)
504 return;
505
506 tty_wakeup(tty);
507 }
508
509 /* main interrupt handler routine */
isicom_interrupt(int irq,void * dev_id,struct pt_regs * regs)510 static void isicom_interrupt(int irq, void * dev_id, struct pt_regs * regs)
511 {
512 struct isi_board * card;
513 struct isi_port * port;
514 struct tty_struct * tty;
515 unsigned short base, header, word_count, count;
516 unsigned char channel;
517 short byte_count;
518
519 /*
520 * find the source of interrupt
521 */
522
523 for(count = 0; count < BOARD_COUNT; count++) {
524 card = &isi_card[count];
525 if (card->base != 0) {
526 if (((card->isa == YES) && (card->irq == irq)) ||
527 ((card->isa == NO) && (card->irq == irq) && (inw(card->base+0x0e) & 0x02)))
528 break;
529 }
530 card = NULL;
531 }
532
533 if (!card || !(card->status & FIRMWARE_LOADED)) {
534 /* printk(KERN_DEBUG "ISICOM: interrupt: not handling irq%d!.\n", irq);*/
535 return;
536 }
537
538 base = card->base;
539 if (card->isa == NO) {
540 /*
541 * disable any interrupts from the PCI card and lower the
542 * interrupt line
543 */
544 outw(0x8000, base+0x04);
545 ClearInterrupt(base);
546 }
547
548 inw(base); /* get the dummy word out */
549 header = inw(base);
550 channel = (header & 0x7800) >> card->shift_count;
551 byte_count = header & 0xff;
552 #ifdef ISICOM_DEBUG
553 printk(KERN_DEBUG "ISICOM:Intr:(0x%x:%d).\n", base, channel+1);
554 #endif
555 if ((channel+1) > card->port_count) {
556 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n",
557 base, channel+1);
558 if (card->isa)
559 ClearInterrupt(base);
560 else
561 outw(0x0000, base+0x04); /* enable interrupts */
562 return;
563 }
564 port = card->ports + channel;
565 if (!(port->flags & ASYNC_INITIALIZED)) {
566 if (card->isa)
567 ClearInterrupt(base);
568 else
569 outw(0x0000, base+0x04); /* enable interrupts */
570 return;
571 }
572
573 tty = port->tty;
574
575 if (header & 0x8000) { /* Status Packet */
576 header = inw(base);
577 switch(header & 0xff) {
578 case 0: /* Change in EIA signals */
579
580 if (port->flags & ASYNC_CHECK_CD) {
581 if (port->status & ISI_DCD) {
582 if (!(header & ISI_DCD)) {
583 /* Carrier has been lost */
584 #ifdef ISICOM_DEBUG
585 printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n");
586 #endif
587 port->status &= ~ISI_DCD;
588 if (!((port->flags & ASYNC_CALLOUT_ACTIVE) &&
589 (port->flags & ASYNC_CALLOUT_NOHUP))) {
590 MOD_INC_USE_COUNT;
591 if (schedule_task(&port->hangup_tq) == 0)
592 MOD_DEC_USE_COUNT;
593 }
594 }
595 }
596 else {
597 if (header & ISI_DCD) {
598 /* Carrier has been detected */
599 #ifdef ISICOM_DEBUG
600 printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n");
601 #endif
602 port->status |= ISI_DCD;
603 wake_up_interruptible(&port->open_wait);
604 }
605 }
606 }
607 else {
608 if (header & ISI_DCD)
609 port->status |= ISI_DCD;
610 else
611 port->status &= ~ISI_DCD;
612 }
613
614 if (port->flags & ASYNC_CTS_FLOW) {
615 if (port->tty->hw_stopped) {
616 if (header & ISI_CTS) {
617 port->tty->hw_stopped = 0;
618 /* start tx ing */
619 port->status |= (ISI_TXOK | ISI_CTS);
620 schedule_bh(port);
621 }
622 }
623 else {
624 if (!(header & ISI_CTS)) {
625 port->tty->hw_stopped = 1;
626 /* stop tx ing */
627 port->status &= ~(ISI_TXOK | ISI_CTS);
628 }
629 }
630 }
631 else {
632 if (header & ISI_CTS)
633 port->status |= ISI_CTS;
634 else
635 port->status &= ~ISI_CTS;
636 }
637
638 if (header & ISI_DSR)
639 port->status |= ISI_DSR;
640 else
641 port->status &= ~ISI_DSR;
642
643 if (header & ISI_RI)
644 port->status |= ISI_RI;
645 else
646 port->status &= ~ISI_RI;
647
648 break;
649
650 case 1: /* Received Break !!! */
651 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
652 break;
653 *tty->flip.flag_buf_ptr++ = TTY_BREAK;
654 /* dunno if this is right */
655 *tty->flip.char_buf_ptr++ = 0;
656 tty->flip.count++;
657 if (port->flags & ASYNC_SAK)
658 do_SAK(tty);
659 queue_task(&tty->flip.tqueue, &tq_timer);
660 break;
661
662 case 2: /* Statistics */
663 printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n");
664 break;
665
666 default:
667 printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n");
668 break;
669 }
670 }
671 else { /* Data Packet */
672 count = MIN(byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count));
673 #ifdef ISICOM_DEBUG
674 printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n",
675 count, byte_count);
676 #endif
677 word_count = count >> 1;
678 insw(base, tty->flip.char_buf_ptr, word_count);
679 tty->flip.char_buf_ptr += (word_count << 1);
680 byte_count -= (word_count << 1);
681 if (count & 0x0001) {
682 *tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff);
683 byte_count -= 2;
684 }
685 memset(tty->flip.flag_buf_ptr, 0, count);
686 tty->flip.flag_buf_ptr += count;
687 tty->flip.count += count;
688
689 if (byte_count > 0) {
690 printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n",
691 base, channel+1);
692 while(byte_count > 0) { /* drain out unread xtra data */
693 inw(base);
694 byte_count -= 2;
695 }
696 }
697 queue_task(&tty->flip.tqueue, &tq_timer);
698 }
699 if (card->isa == YES)
700 ClearInterrupt(base);
701 else
702 outw(0x0000, base+0x04); /* enable interrupts */
703 return;
704 }
705
706 /* called with interrupts disabled */
isicom_config_port(struct isi_port * port)707 static void isicom_config_port(struct isi_port * port)
708 {
709 struct isi_board * card = port->card;
710 struct tty_struct * tty;
711 unsigned long baud;
712 unsigned short channel_setup, wait, base = card->base;
713 unsigned short channel = port->channel, shift_count = card->shift_count;
714 unsigned char flow_ctrl;
715
716 if (!(tty = port->tty) || !tty->termios)
717 return;
718 baud = C_BAUD(tty);
719 if (baud & CBAUDEX) {
720 baud &= ~CBAUDEX;
721
722 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
723 * then the card is programmed for 57.6Kbps or 115Kbps
724 * respectively.
725 */
726
727 if (baud < 1 || baud > 2)
728 port->tty->termios->c_cflag &= ~CBAUDEX;
729 else
730 baud += 15;
731 }
732 if (baud == 15) {
733
734 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
735 * by the set_serial_info ioctl ... this is done by
736 * the 'setserial' utility.
737 */
738
739 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
740 baud++; /* 57.6 Kbps */
741 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
742 baud +=2; /* 115 Kbps */
743 }
744 if (linuxb_to_isib[baud] == -1) {
745 /* hang up */
746 drop_dtr(port);
747 return;
748 }
749 else
750 raise_dtr(port);
751
752 wait = 100;
753 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
754 if (!wait) {
755 printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at channel setup.\n");
756 return;
757 }
758 outw(0x8000 | (channel << shift_count) |0x03, base);
759 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
760 channel_setup = 0;
761 switch(C_CSIZE(tty)) {
762 case CS5:
763 channel_setup |= ISICOM_CS5;
764 break;
765 case CS6:
766 channel_setup |= ISICOM_CS6;
767 break;
768 case CS7:
769 channel_setup |= ISICOM_CS7;
770 break;
771 case CS8:
772 channel_setup |= ISICOM_CS8;
773 break;
774 }
775
776 if (C_CSTOPB(tty))
777 channel_setup |= ISICOM_2SB;
778
779 if (C_PARENB(tty))
780 channel_setup |= ISICOM_EVPAR;
781 if (C_PARODD(tty))
782 channel_setup |= ISICOM_ODPAR;
783 outw(channel_setup, base);
784 InterruptTheCard(base);
785
786 if (C_CLOCAL(tty))
787 port->flags &= ~ASYNC_CHECK_CD;
788 else
789 port->flags |= ASYNC_CHECK_CD;
790
791 /* flow control settings ...*/
792 flow_ctrl = 0;
793 port->flags &= ~ASYNC_CTS_FLOW;
794 if (C_CRTSCTS(tty)) {
795 port->flags |= ASYNC_CTS_FLOW;
796 flow_ctrl |= ISICOM_CTSRTS;
797 }
798 if (I_IXON(tty))
799 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
800 if (I_IXOFF(tty))
801 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
802
803 wait = 100;
804 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
805 if (!wait) {
806 printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at flow setup.\n");
807 return;
808 }
809 outw(0x8000 | (channel << shift_count) |0x04, base);
810 outw(flow_ctrl << 8 | 0x05, base);
811 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
812 InterruptTheCard(base);
813
814 /* rx enabled -> enable port for rx on the card */
815 if (C_CREAD(tty)) {
816 card->port_status |= (1 << channel);
817 outw(card->port_status, base + 0x02);
818 }
819
820 }
821
822 /* open et all */
823
isicom_setup_board(struct isi_board * bp)824 static inline void isicom_setup_board(struct isi_board * bp)
825 {
826 int channel;
827 struct isi_port * port;
828 unsigned long flags;
829
830 if (bp->status & BOARD_ACTIVE)
831 return;
832 port = bp->ports;
833 #ifdef ISICOM_DEBUG
834 printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts start, port_count %d...\n", bp->port_count);
835 #endif
836 for(channel = 0; channel < bp->port_count; channel++, port++) {
837 save_flags(flags); cli();
838 drop_dtr_rts(port);
839 restore_flags(flags);
840 }
841 #ifdef ISICOM_DEBUG
842 printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts stop...\n");
843 #endif
844
845 bp->status |= BOARD_ACTIVE;
846 MOD_INC_USE_COUNT;
847 return;
848 }
849
isicom_setup_port(struct isi_port * port)850 static int isicom_setup_port(struct isi_port * port)
851 {
852 struct isi_board * card = port->card;
853 unsigned long flags;
854
855 if (port->flags & ASYNC_INITIALIZED)
856 return 0;
857 if (!port->xmit_buf) {
858 unsigned long page;
859
860 if (!(page = get_free_page(GFP_KERNEL)))
861 return -ENOMEM;
862
863 if (port->xmit_buf) {
864 free_page(page);
865 return -ERESTARTSYS;
866 }
867 port->xmit_buf = (unsigned char *) page;
868 }
869 save_flags(flags); cli();
870 if (port->tty)
871 clear_bit(TTY_IO_ERROR, &port->tty->flags);
872 if (port->count == 1)
873 card->count++;
874
875 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
876
877 /* discard any residual data */
878 kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX);
879
880 isicom_config_port(port);
881 port->flags |= ASYNC_INITIALIZED;
882
883 restore_flags(flags);
884
885 return 0;
886 }
887
block_til_ready(struct tty_struct * tty,struct file * filp,struct isi_port * port)888 static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port)
889 {
890 int do_clocal = 0, retval;
891 DECLARE_WAITQUEUE(wait, current);
892
893 /* block if port is in the process of being closed */
894
895 if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
896 #ifdef ISICOM_DEBUG
897 printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n");
898 #endif
899 interruptible_sleep_on(&port->close_wait);
900 if (port->flags & ASYNC_HUP_NOTIFY)
901 return -EAGAIN;
902 else
903 return -ERESTARTSYS;
904 }
905
906 /* trying to open a callout device... check for constraints */
907
908 if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
909 #ifdef ISICOM_DEBUG
910 printk(KERN_DEBUG "ISICOM: bl_ti_rdy: callout open.\n");
911 #endif
912 if (port->flags & ASYNC_NORMAL_ACTIVE)
913 return -EBUSY;
914 if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
915 (port->flags & ASYNC_SESSION_LOCKOUT) &&
916 (port->session != current->session))
917 return -EBUSY;
918
919 if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
920 (port->flags & ASYNC_PGRP_LOCKOUT) &&
921 (port->pgrp != current->pgrp))
922 return -EBUSY;
923 port->flags |= ASYNC_CALLOUT_ACTIVE;
924 cli();
925 raise_dtr_rts(port);
926 sti();
927 return 0;
928 }
929
930 /* if non-blocking mode is set ... */
931
932 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
933 #ifdef ISICOM_DEBUG
934 printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n");
935 #endif
936 if (port->flags & ASYNC_CALLOUT_ACTIVE)
937 return -EBUSY;
938 port->flags |= ASYNC_NORMAL_ACTIVE;
939 return 0;
940 }
941
942 if (port->flags & ASYNC_CALLOUT_ACTIVE) {
943 if (port->normal_termios.c_cflag & CLOCAL)
944 do_clocal = 1;
945 } else {
946 if (C_CLOCAL(tty))
947 do_clocal = 1;
948 }
949 #ifdef ISICOM_DEBUG
950 if (do_clocal)
951 printk(KERN_DEBUG "ISICOM: block_til_ready: CLOCAL set.\n");
952 #endif
953
954 /* block waiting for DCD to be asserted, and while
955 callout dev is busy */
956 retval = 0;
957 add_wait_queue(&port->open_wait, &wait);
958 cli();
959 if (!tty_hung_up_p(filp))
960 port->count--;
961 sti();
962 port->blocked_open++;
963 #ifdef ISICOM_DEBUG
964 printk(KERN_DEBUG "ISICOM: block_til_ready: waiting for DCD...\n");
965 #endif
966 while (1) {
967 cli();
968 if (!(port->flags & ASYNC_CALLOUT_ACTIVE))
969 raise_dtr_rts(port);
970
971 sti();
972 set_current_state(TASK_INTERRUPTIBLE);
973 if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
974 if (port->flags & ASYNC_HUP_NOTIFY)
975 retval = -EAGAIN;
976 else
977 retval = -ERESTARTSYS;
978 #ifdef ISICOM_DEBUG
979 printk(KERN_DEBUG "ISICOM: block_til_ready: tty_hung_up_p || not init.\n");
980 #endif
981 break;
982 }
983 if (!(port->flags & ASYNC_CALLOUT_ACTIVE) &&
984 !(port->flags & ASYNC_CLOSING) &&
985 (do_clocal || (port->status & ISI_DCD))) {
986 #ifdef ISICOM_DEBUG
987 printk(KERN_DEBUG "ISICOM: block_til_ready: do_clocal || DCD.\n");
988 #endif
989 break;
990 }
991 if (signal_pending(current)) {
992 #ifdef ISICOM_DEBUG
993 printk(KERN_DEBUG "ISICOM: block_til_ready: sig blocked.\n");
994 #endif
995 retval = -ERESTARTSYS;
996 break;
997 }
998 schedule();
999 }
1000 set_current_state(TASK_RUNNING);
1001 remove_wait_queue(&port->open_wait, &wait);
1002 if (!tty_hung_up_p(filp))
1003 port->count++;
1004 port->blocked_open--;
1005 if (retval)
1006 return retval;
1007 port->flags |= ASYNC_NORMAL_ACTIVE;
1008 return 0;
1009 }
1010
isicom_open(struct tty_struct * tty,struct file * filp)1011 static int isicom_open(struct tty_struct * tty, struct file * filp)
1012 {
1013 struct isi_port * port;
1014 struct isi_board * card;
1015 unsigned int line, board;
1016 unsigned long flags;
1017 int error;
1018
1019 #ifdef ISICOM_DEBUG
1020 printk(KERN_DEBUG "ISICOM: open start!!!.\n");
1021 #endif
1022 line = MINOR(tty->device) - tty->driver.minor_start;
1023
1024 #ifdef ISICOM_DEBUG
1025 printk(KERN_DEBUG "line = %d.\n", line);
1026 #endif
1027
1028 if ((line < 0) || (line > (PORT_COUNT-1)))
1029 return -ENODEV;
1030 board = BOARD(line);
1031
1032 #ifdef ISICOM_DEBUG
1033 printk(KERN_DEBUG "board = %d.\n", board);
1034 #endif
1035
1036 card = &isi_card[board];
1037 if (!(card->status & FIRMWARE_LOADED)) {
1038 #ifdef ISICOM_DEBUG
1039 printk(KERN_DEBUG"ISICOM: Firmware not loaded to card%d.\n", board);
1040 #endif
1041 return -ENODEV;
1042 }
1043
1044 /* open on a port greater than the port count for the card !!! */
1045 if (line > ((board * 16) + card->port_count - 1)) {
1046 printk(KERN_ERR "ISICOM: Open on a port which exceeds the port_count of the card!\n");
1047 return -ENODEV;
1048 }
1049 port = &isi_ports[line];
1050 if (isicom_paranoia_check(port, tty->device, "isicom_open"))
1051 return -ENODEV;
1052
1053 #ifdef ISICOM_DEBUG
1054 printk(KERN_DEBUG "ISICOM: isicom_setup_board ...\n");
1055 #endif
1056 isicom_setup_board(card);
1057
1058 port->count++;
1059 tty->driver_data = port;
1060 port->tty = tty;
1061 #ifdef ISICOM_DEBUG
1062 printk(KERN_DEBUG "ISICOM: isicom_setup_port ...\n");
1063 #endif
1064 if ((error = isicom_setup_port(port))!=0)
1065 return error;
1066 #ifdef ISICOM_DEBUG
1067 printk(KERN_DEBUG "ISICOM: block_til_ready ...\n");
1068 #endif
1069 if ((error = block_til_ready(tty, filp, port))!=0)
1070 return error;
1071
1072 if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) {
1073 if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
1074 *tty->termios = port->normal_termios;
1075 else
1076 *tty->termios = port->callout_termios;
1077 save_flags(flags); cli();
1078 isicom_config_port(port);
1079 restore_flags(flags);
1080 }
1081
1082 port->session = current->session;
1083 port->pgrp = current->pgrp;
1084 #ifdef ISICOM_DEBUG
1085 printk(KERN_DEBUG "ISICOM: open end!!!.\n");
1086 #endif
1087 return 0;
1088 }
1089
1090 /* close et all */
1091
isicom_shutdown_board(struct isi_board * bp)1092 static inline void isicom_shutdown_board(struct isi_board * bp)
1093 {
1094 int channel;
1095 struct isi_port * port;
1096
1097 if (!(bp->status & BOARD_ACTIVE))
1098 return;
1099 bp->status &= ~BOARD_ACTIVE;
1100 port = bp->ports;
1101 for(channel = 0; channel < bp->port_count; channel++, port++) {
1102 drop_dtr_rts(port);
1103 }
1104 MOD_DEC_USE_COUNT;
1105 }
1106
isicom_shutdown_port(struct isi_port * port)1107 static void isicom_shutdown_port(struct isi_port * port)
1108 {
1109 struct isi_board * card = port->card;
1110 struct tty_struct * tty;
1111
1112 if (!(port->flags & ASYNC_INITIALIZED))
1113 return;
1114 if (port->xmit_buf) {
1115 free_page((unsigned long) port->xmit_buf);
1116 port->xmit_buf = NULL;
1117 }
1118 if (!(tty = port->tty) || C_HUPCL(tty))
1119 /* drop dtr on this port */
1120 drop_dtr(port);
1121
1122 /* any other port uninits */
1123
1124 if (tty)
1125 set_bit(TTY_IO_ERROR, &tty->flags);
1126 port->flags &= ~ASYNC_INITIALIZED;
1127
1128 if (--card->count < 0) {
1129 printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n",
1130 card->base, card->count);
1131 card->count = 0;
1132 }
1133
1134 /* last port was closed , shutdown that boad too */
1135 if (!card->count)
1136 isicom_shutdown_board(card);
1137 }
1138
isicom_close(struct tty_struct * tty,struct file * filp)1139 static void isicom_close(struct tty_struct * tty, struct file * filp)
1140 {
1141 struct isi_port * port = (struct isi_port *) tty->driver_data;
1142 struct isi_board * card = port->card;
1143 unsigned long flags;
1144
1145 if (!port)
1146 return;
1147 if (isicom_paranoia_check(port, tty->device, "isicom_close"))
1148 return;
1149
1150 #ifdef ISICOM_DEBUG
1151 printk(KERN_DEBUG "ISICOM: Close start!!!.\n");
1152 #endif
1153
1154 save_flags(flags); cli();
1155 if (tty_hung_up_p(filp)) {
1156 restore_flags(flags);
1157 return;
1158 }
1159
1160 if ((tty->count == 1) && (port->count != 1)) {
1161 printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count"
1162 "tty->count = 1 port count = %d.\n",
1163 card->base, port->count);
1164 port->count = 1;
1165 }
1166 if (--port->count < 0) {
1167 printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for"
1168 "channel%d = %d", card->base, port->channel,
1169 port->count);
1170 port->count = 0;
1171 }
1172
1173 if (port->count) {
1174 restore_flags(flags);
1175 return;
1176 }
1177 port->flags |= ASYNC_CLOSING;
1178 /*
1179 * save termios struct since callout and dialin termios may be
1180 * different.
1181 */
1182 if (port->flags & ASYNC_NORMAL_ACTIVE)
1183 port->normal_termios = *tty->termios;
1184 if (port->flags & ASYNC_CALLOUT_ACTIVE)
1185 port->callout_termios = *tty->termios;
1186
1187 tty->closing = 1;
1188 if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
1189 tty_wait_until_sent(tty, port->closing_wait);
1190 /* indicate to the card that no more data can be received
1191 on this port */
1192 if (port->flags & ASYNC_INITIALIZED) {
1193 card->port_status &= ~(1 << port->channel);
1194 outw(card->port_status, card->base + 0x02);
1195 }
1196 isicom_shutdown_port(port);
1197 if (tty->driver.flush_buffer)
1198 tty->driver.flush_buffer(tty);
1199
1200 tty_ldisc_flush(tty);
1201 tty->closing = 0;
1202 port->tty = 0;
1203 if (port->blocked_open) {
1204 if (port->close_delay) {
1205 set_current_state(TASK_INTERRUPTIBLE);
1206 #ifdef ISICOM_DEBUG
1207 printk(KERN_DEBUG "ISICOM: scheduling until time out.\n");
1208 #endif
1209 schedule_timeout(port->close_delay);
1210 }
1211 wake_up_interruptible(&port->open_wait);
1212 }
1213 port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE |
1214 ASYNC_CLOSING);
1215 wake_up_interruptible(&port->close_wait);
1216 restore_flags(flags);
1217 #ifdef ISICOM_DEBUG
1218 printk(KERN_DEBUG "ISICOM: Close end!!!.\n");
1219 #endif
1220 }
1221
1222 /* write et all */
isicom_write(struct tty_struct * tty,int from_user,const unsigned char * buf,int count)1223 static int isicom_write(struct tty_struct * tty, int from_user,
1224 const unsigned char * buf, int count)
1225 {
1226 struct isi_port * port;
1227 unsigned long flags;
1228 int cnt, total = 0;
1229
1230 if (!tty)
1231 return 0;
1232
1233 port = (struct isi_port *) tty->driver_data;
1234
1235 #ifdef ISICOM_DEBUG
1236 printk(KERN_DEBUG "ISICOM: isicom_write for port%d: %d bytes.\n",
1237 port->channel+1, count);
1238 #endif
1239 if (isicom_paranoia_check(port, tty->device, "isicom_write"))
1240 return 0;
1241
1242 if (!port->xmit_buf || !tmp_buf)
1243 return 0;
1244 if (from_user)
1245 down(&tmp_buf_sem); /* acquire xclusive access to tmp_buf */
1246
1247 save_flags(flags);
1248 while(1) {
1249 cli();
1250 cnt = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
1251 SERIAL_XMIT_SIZE - port->xmit_head));
1252 if (cnt <= 0)
1253 break;
1254
1255 if (from_user) {
1256 /* the following may block for paging... hence
1257 enabling interrupts but tx routine may have
1258 created more space in xmit_buf when the ctrl
1259 gets back here */
1260 sti();
1261 copy_from_user(tmp_buf, buf, cnt);
1262 cli();
1263 cnt = MIN(cnt, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
1264 SERIAL_XMIT_SIZE - port->xmit_head));
1265 memcpy(port->xmit_buf + port->xmit_head, tmp_buf, cnt);
1266 }
1267 else
1268 memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
1269 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
1270 port->xmit_cnt += cnt;
1271 restore_flags(flags);
1272 buf += cnt;
1273 count -= cnt;
1274 total += cnt;
1275 }
1276 if (from_user)
1277 up(&tmp_buf_sem);
1278 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
1279 port->status |= ISI_TXOK;
1280 restore_flags(flags);
1281 #ifdef ISICOM_DEBUG
1282 printk(KERN_DEBUG "ISICOM: isicom_write %d bytes written.\n", total);
1283 #endif
1284 return total;
1285 }
1286
1287 /* put_char et all */
isicom_put_char(struct tty_struct * tty,unsigned char ch)1288 static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
1289 {
1290 struct isi_port * port;
1291 unsigned long flags;
1292
1293 if (!tty)
1294 return;
1295
1296 port = (struct isi_port *) tty->driver_data;
1297
1298 if (isicom_paranoia_check(port, tty->device, "isicom_put_char"))
1299 return;
1300
1301 if (!port->xmit_buf)
1302 return;
1303 #ifdef ISICOM_DEBUG
1304 printk(KERN_DEBUG "ISICOM: put_char, port %d, char %c.\n", port->channel+1, ch);
1305 #endif
1306
1307 save_flags(flags); cli();
1308
1309 if (port->xmit_cnt >= (SERIAL_XMIT_SIZE - 1)) {
1310 restore_flags(flags);
1311 return;
1312 }
1313
1314 port->xmit_buf[port->xmit_head++] = ch;
1315 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1316 port->xmit_cnt++;
1317 restore_flags(flags);
1318 }
1319
1320 /* flush_chars et all */
isicom_flush_chars(struct tty_struct * tty)1321 static void isicom_flush_chars(struct tty_struct * tty)
1322 {
1323 struct isi_port * port = (struct isi_port *) tty->driver_data;
1324
1325 if (isicom_paranoia_check(port, tty->device, "isicom_flush_chars"))
1326 return;
1327
1328 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
1329 !port->xmit_buf)
1330 return;
1331
1332 /* this tells the transmitter to consider this port for
1333 data output to the card ... that's the best we can do. */
1334 port->status |= ISI_TXOK;
1335 }
1336
1337 /* write_room et all */
isicom_write_room(struct tty_struct * tty)1338 static int isicom_write_room(struct tty_struct * tty)
1339 {
1340 struct isi_port * port = (struct isi_port *) tty->driver_data;
1341 int free;
1342 if (isicom_paranoia_check(port, tty->device, "isicom_write_room"))
1343 return 0;
1344
1345 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1346 if (free < 0)
1347 free = 0;
1348 return free;
1349 }
1350
1351 /* chars_in_buffer et all */
isicom_chars_in_buffer(struct tty_struct * tty)1352 static int isicom_chars_in_buffer(struct tty_struct * tty)
1353 {
1354 struct isi_port * port = (struct isi_port *) tty->driver_data;
1355 if (isicom_paranoia_check(port, tty->device, "isicom_chars_in_buffer"))
1356 return 0;
1357 return port->xmit_cnt;
1358 }
1359
1360 /* ioctl et all */
isicom_send_break(struct isi_port * port,unsigned long length)1361 static inline void isicom_send_break(struct isi_port * port, unsigned long length)
1362 {
1363 struct isi_board * card = port->card;
1364 short wait = 10;
1365 unsigned short base = card->base;
1366 unsigned long flags;
1367
1368 save_flags(flags); cli();
1369 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
1370 if (!wait) {
1371 printk(KERN_DEBUG "ISICOM: Card found busy in isicom_send_break.\n");
1372 goto out;
1373 }
1374 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1375 outw((length & 0xff) << 8 | 0x00, base);
1376 outw((length & 0xff00), base);
1377 InterruptTheCard(base);
1378 out: restore_flags(flags);
1379 }
1380
isicom_get_modem_info(struct isi_port * port,unsigned int * value)1381 static int isicom_get_modem_info(struct isi_port * port, unsigned int * value)
1382 {
1383 /* just send the port status */
1384 unsigned int info;
1385 unsigned short status = port->status;
1386
1387 info = ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1388 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1389 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1390 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1391 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1392 ((status & ISI_RI ) ? TIOCM_RI : 0);
1393 return put_user(info, (unsigned int *) value);
1394 }
1395
isicom_set_modem_info(struct isi_port * port,unsigned int cmd,unsigned int * value)1396 static int isicom_set_modem_info(struct isi_port * port, unsigned int cmd,
1397 unsigned int * value)
1398 {
1399 unsigned int arg;
1400 unsigned long flags;
1401
1402 if(get_user(arg, value))
1403 return -EFAULT;
1404
1405 save_flags(flags); cli();
1406
1407 switch(cmd) {
1408 case TIOCMBIS:
1409 if (arg & TIOCM_RTS)
1410 raise_rts(port);
1411 if (arg & TIOCM_DTR)
1412 raise_dtr(port);
1413 break;
1414
1415 case TIOCMBIC:
1416 if (arg & TIOCM_RTS)
1417 drop_rts(port);
1418 if (arg & TIOCM_DTR)
1419 drop_dtr(port);
1420 break;
1421
1422 case TIOCMSET:
1423 if (arg & TIOCM_RTS)
1424 raise_rts(port);
1425 else
1426 drop_rts(port);
1427
1428 if (arg & TIOCM_DTR)
1429 raise_dtr(port);
1430 else
1431 drop_dtr(port);
1432 break;
1433
1434 default:
1435 restore_flags(flags);
1436 return -EINVAL;
1437 }
1438 restore_flags(flags);
1439 return 0;
1440 }
1441
isicom_set_serial_info(struct isi_port * port,struct serial_struct * info)1442 static int isicom_set_serial_info(struct isi_port * port,
1443 struct serial_struct * info)
1444 {
1445 struct serial_struct newinfo;
1446 unsigned long flags;
1447 int reconfig_port;
1448
1449 if(copy_from_user(&newinfo, info, sizeof(newinfo)))
1450 return -EFAULT;
1451
1452 reconfig_port = ((port->flags & ASYNC_SPD_MASK) !=
1453 (newinfo.flags & ASYNC_SPD_MASK));
1454
1455 if (!capable(CAP_SYS_ADMIN)) {
1456 if ((newinfo.close_delay != port->close_delay) ||
1457 (newinfo.closing_wait != port->closing_wait) ||
1458 ((newinfo.flags & ~ASYNC_USR_MASK) !=
1459 (port->flags & ~ASYNC_USR_MASK)))
1460 return -EPERM;
1461 port->flags = ((port->flags & ~ ASYNC_USR_MASK) |
1462 (newinfo.flags & ASYNC_USR_MASK));
1463 }
1464 else {
1465 port->close_delay = newinfo.close_delay;
1466 port->closing_wait = newinfo.closing_wait;
1467 port->flags = ((port->flags & ~ASYNC_FLAGS) |
1468 (newinfo.flags & ASYNC_FLAGS));
1469 }
1470 if (reconfig_port) {
1471 save_flags(flags); cli();
1472 isicom_config_port(port);
1473 restore_flags(flags);
1474 }
1475 return 0;
1476 }
1477
isicom_get_serial_info(struct isi_port * port,struct serial_struct * info)1478 static int isicom_get_serial_info(struct isi_port * port,
1479 struct serial_struct * info)
1480 {
1481 struct serial_struct out_info;
1482
1483 memset(&out_info, 0, sizeof(out_info));
1484 /* out_info.type = ? */
1485 out_info.line = port - isi_ports;
1486 out_info.port = port->card->base;
1487 out_info.irq = port->card->irq;
1488 out_info.flags = port->flags;
1489 /* out_info.baud_base = ? */
1490 out_info.close_delay = port->close_delay;
1491 out_info.closing_wait = port->closing_wait;
1492 if(copy_to_user(info, &out_info, sizeof(out_info)))
1493 return -EFAULT;
1494 return 0;
1495 }
1496
isicom_ioctl(struct tty_struct * tty,struct file * filp,unsigned int cmd,unsigned long arg)1497 static int isicom_ioctl(struct tty_struct * tty, struct file * filp,
1498 unsigned int cmd, unsigned long arg)
1499 {
1500 struct isi_port * port = (struct isi_port *) tty->driver_data;
1501 int retval;
1502
1503 if (isicom_paranoia_check(port, tty->device, "isicom_ioctl"))
1504 return -ENODEV;
1505
1506 switch(cmd) {
1507 case TCSBRK:
1508 retval = tty_check_change(tty);
1509 if (retval)
1510 return retval;
1511 tty_wait_until_sent(tty, 0);
1512 if (!arg)
1513 isicom_send_break(port, HZ/4);
1514 return 0;
1515
1516 case TCSBRKP:
1517 retval = tty_check_change(tty);
1518 if (retval)
1519 return retval;
1520 tty_wait_until_sent(tty, 0);
1521 isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4);
1522 return 0;
1523
1524 case TIOCGSOFTCAR:
1525 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
1526
1527 case TIOCSSOFTCAR:
1528 if(get_user(arg, (unsigned long *) arg))
1529 return -EFAULT;
1530 tty->termios->c_cflag =
1531 ((tty->termios->c_cflag & ~CLOCAL) |
1532 (arg ? CLOCAL : 0));
1533 return 0;
1534
1535 case TIOCMGET:
1536 return isicom_get_modem_info(port, (unsigned int*) arg);
1537
1538 case TIOCMBIS:
1539 case TIOCMBIC:
1540 case TIOCMSET:
1541 return isicom_set_modem_info(port, cmd,
1542 (unsigned int *) arg);
1543
1544 case TIOCGSERIAL:
1545 return isicom_get_serial_info(port,
1546 (struct serial_struct *) arg);
1547
1548 case TIOCSSERIAL:
1549 return isicom_set_serial_info(port,
1550 (struct serial_struct *) arg);
1551
1552 default:
1553 return -ENOIOCTLCMD;
1554 }
1555 return 0;
1556 }
1557
1558 /* set_termios et all */
isicom_set_termios(struct tty_struct * tty,struct termios * old_termios)1559 static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios)
1560 {
1561 struct isi_port * port = (struct isi_port *) tty->driver_data;
1562 unsigned long flags;
1563
1564 if (isicom_paranoia_check(port, tty->device, "isicom_set_termios"))
1565 return;
1566
1567 if (tty->termios->c_cflag == old_termios->c_cflag &&
1568 tty->termios->c_iflag == old_termios->c_iflag)
1569 return;
1570
1571 save_flags(flags); cli();
1572 isicom_config_port(port);
1573 restore_flags(flags);
1574
1575 if ((old_termios->c_cflag & CRTSCTS) &&
1576 !(tty->termios->c_cflag & CRTSCTS)) {
1577 tty->hw_stopped = 0;
1578 isicom_start(tty);
1579 }
1580 }
1581
1582 /* throttle et all */
isicom_throttle(struct tty_struct * tty)1583 static void isicom_throttle(struct tty_struct * tty)
1584 {
1585 struct isi_port * port = (struct isi_port *) tty->driver_data;
1586 struct isi_board * card = port->card;
1587 unsigned long flags;
1588
1589 if (isicom_paranoia_check(port, tty->device, "isicom_throttle"))
1590 return;
1591
1592 /* tell the card that this port cannot handle any more data for now */
1593 save_flags(flags); cli();
1594 card->port_status &= ~(1 << port->channel);
1595 outw(card->port_status, card->base + 0x02);
1596 restore_flags(flags);
1597 }
1598
1599 /* unthrottle et all */
isicom_unthrottle(struct tty_struct * tty)1600 static void isicom_unthrottle(struct tty_struct * tty)
1601 {
1602 struct isi_port * port = (struct isi_port *) tty->driver_data;
1603 struct isi_board * card = port->card;
1604 unsigned long flags;
1605
1606 if (isicom_paranoia_check(port, tty->device, "isicom_unthrottle"))
1607 return;
1608
1609 /* tell the card that this port is ready to accept more data */
1610 save_flags(flags); cli();
1611 card->port_status |= (1 << port->channel);
1612 outw(card->port_status, card->base + 0x02);
1613 restore_flags(flags);
1614 }
1615
1616 /* stop et all */
isicom_stop(struct tty_struct * tty)1617 static void isicom_stop(struct tty_struct * tty)
1618 {
1619 struct isi_port * port = (struct isi_port *) tty->driver_data;
1620
1621 if (isicom_paranoia_check(port, tty->device, "isicom_stop"))
1622 return;
1623
1624 /* this tells the transmitter not to consider this port for
1625 data output to the card. */
1626 port->status &= ~ISI_TXOK;
1627 }
1628
1629 /* start et all */
isicom_start(struct tty_struct * tty)1630 static void isicom_start(struct tty_struct * tty)
1631 {
1632 struct isi_port * port = (struct isi_port *) tty->driver_data;
1633
1634 if (isicom_paranoia_check(port, tty->device, "isicom_start"))
1635 return;
1636
1637 /* this tells the transmitter to consider this port for
1638 data output to the card. */
1639 port->status |= ISI_TXOK;
1640 }
1641
1642 /* hangup et all */
do_isicom_hangup(void * data)1643 static void do_isicom_hangup(void * data)
1644 {
1645 struct isi_port * port = (struct isi_port *) data;
1646 struct tty_struct * tty;
1647
1648 tty = port->tty;
1649 if (tty)
1650 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
1651 MOD_DEC_USE_COUNT;
1652 }
1653
isicom_hangup(struct tty_struct * tty)1654 static void isicom_hangup(struct tty_struct * tty)
1655 {
1656 struct isi_port * port = (struct isi_port *) tty->driver_data;
1657
1658 if (isicom_paranoia_check(port, tty->device, "isicom_hangup"))
1659 return;
1660
1661 isicom_shutdown_port(port);
1662 port->count = 0;
1663 port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
1664 port->tty = 0;
1665 wake_up_interruptible(&port->open_wait);
1666 }
1667
1668 /* flush_buffer et all */
isicom_flush_buffer(struct tty_struct * tty)1669 static void isicom_flush_buffer(struct tty_struct * tty)
1670 {
1671 struct isi_port * port = (struct isi_port *) tty->driver_data;
1672 unsigned long flags;
1673
1674 if (isicom_paranoia_check(port, tty->device, "isicom_flush_buffer"))
1675 return;
1676
1677 save_flags(flags); cli();
1678 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1679 restore_flags(flags);
1680
1681 tty_wakeup(tty);
1682 }
1683
1684
register_ioregion(void)1685 static int register_ioregion(void)
1686 {
1687 int count, done=0;
1688 for (count=0; count < BOARD_COUNT; count++ ) {
1689 if (isi_card[count].base) {
1690 if (check_region(isi_card[count].base,16)) {
1691 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.\n",
1692 isi_card[count].base,isi_card[count].base+15,count+1);
1693 isi_card[count].base=0;
1694 }
1695 else {
1696 request_region(isi_card[count].base,16,ISICOM_NAME);
1697 #ifdef ISICOM_DEBUG
1698 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x requested for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1);
1699 #endif
1700 done++;
1701 }
1702 }
1703 }
1704 return done;
1705 }
1706
unregister_ioregion(void)1707 static void unregister_ioregion(void)
1708 {
1709 int count;
1710 for (count=0; count < BOARD_COUNT; count++ )
1711 if (isi_card[count].base) {
1712 release_region(isi_card[count].base,16);
1713 #ifdef ISICOM_DEBUG
1714 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1);
1715 #endif
1716 }
1717 }
1718
register_drivers(void)1719 static int register_drivers(void)
1720 {
1721 int error;
1722
1723 /* tty driver structure initialization */
1724 memset(&isicom_normal, 0, sizeof(struct tty_driver));
1725 isicom_normal.magic = TTY_DRIVER_MAGIC;
1726 isicom_normal.name = "ttyM";
1727 isicom_normal.major = ISICOM_NMAJOR;
1728 isicom_normal.minor_start = 0;
1729 isicom_normal.num = PORT_COUNT;
1730 isicom_normal.type = TTY_DRIVER_TYPE_SERIAL;
1731 isicom_normal.subtype = SERIAL_TYPE_NORMAL;
1732 isicom_normal.init_termios = tty_std_termios;
1733 isicom_normal.init_termios.c_cflag =
1734 B9600 | CS8 | CREAD | HUPCL |CLOCAL;
1735 isicom_normal.flags = TTY_DRIVER_REAL_RAW;
1736 isicom_normal.refcount = &isicom_refcount;
1737
1738 isicom_normal.table = isicom_table;
1739 isicom_normal.termios = isicom_termios;
1740 isicom_normal.termios_locked = isicom_termios_locked;
1741
1742 isicom_normal.open = isicom_open;
1743 isicom_normal.close = isicom_close;
1744 isicom_normal.write = isicom_write;
1745 isicom_normal.put_char = isicom_put_char;
1746 isicom_normal.flush_chars = isicom_flush_chars;
1747 isicom_normal.write_room = isicom_write_room;
1748 isicom_normal.chars_in_buffer = isicom_chars_in_buffer;
1749 isicom_normal.ioctl = isicom_ioctl;
1750 isicom_normal.set_termios = isicom_set_termios;
1751 isicom_normal.throttle = isicom_throttle;
1752 isicom_normal.unthrottle = isicom_unthrottle;
1753 isicom_normal.stop = isicom_stop;
1754 isicom_normal.start = isicom_start;
1755 isicom_normal.hangup = isicom_hangup;
1756 isicom_normal.flush_buffer = isicom_flush_buffer;
1757
1758 /* callout device */
1759
1760 isicom_callout = isicom_normal;
1761 isicom_callout.name = "cum";
1762 isicom_callout.major = ISICOM_CMAJOR;
1763 isicom_callout.subtype = SERIAL_TYPE_CALLOUT;
1764
1765 if ((error=tty_register_driver(&isicom_normal))!=0) {
1766 printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n",
1767 error);
1768 return error;
1769 }
1770 if ((error=tty_register_driver(&isicom_callout))!=0) {
1771 tty_unregister_driver(&isicom_normal);
1772 printk(KERN_DEBUG "ISICOM: Couldn't register the callout driver, error=%d\n",
1773 error);
1774 return error;
1775 }
1776 return 0;
1777 }
1778
unregister_drivers(void)1779 static void unregister_drivers(void)
1780 {
1781 int error;
1782 if ((error=tty_unregister_driver(&isicom_callout))!=0)
1783 printk(KERN_DEBUG "ISICOM: couldn't unregister callout driver error=%d.\n",error);
1784 if (tty_unregister_driver(&isicom_normal))
1785 printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error);
1786 }
1787
register_isr(void)1788 static int register_isr(void)
1789 {
1790 int count, done=0, card;
1791 int flag;
1792 unsigned char request;
1793 for (count=0; count < BOARD_COUNT; count++ ) {
1794 if (isi_card[count].base) {
1795 /*
1796 * verify if the required irq has already been requested for
1797 * another ISI Card, if so we already have it, else request it
1798 */
1799 request = YES;
1800 for(card = 0; card < count; card++)
1801 if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
1802 request = NO;
1803 if ((isi_card[count].isa == NO) && (isi_card[card].isa == NO))
1804 break;
1805 /*
1806 * ISA cards cannot share interrupts with other
1807 * PCI or ISA devices hence disable this card.
1808 */
1809 release_region(isi_card[count].base,16);
1810 isi_card[count].base = 0;
1811 break;
1812 }
1813 flag=0;
1814 if(isi_card[count].isa == NO)
1815 flag |= SA_SHIRQ;
1816
1817 if (request == YES) {
1818 if (request_irq(isi_card[count].irq, isicom_interrupt, SA_INTERRUPT|flag, ISICOM_NAME, NULL)) {
1819 printk(KERN_WARNING "ISICOM: Could not install handler at Irq %d. Card%d will be disabled.\n",
1820 isi_card[count].irq, count+1);
1821 release_region(isi_card[count].base,16);
1822 isi_card[count].base=0;
1823 }
1824 else {
1825 printk(KERN_INFO "ISICOM: Card%d at 0x%x using irq %d.\n",
1826 count+1, isi_card[count].base, isi_card[count].irq);
1827
1828 irq_to_board[isi_card[count].irq]=&isi_card[count];
1829 done++;
1830 }
1831 }
1832 }
1833 }
1834 return done;
1835 }
1836
unregister_isr(void)1837 static void unregister_isr(void)
1838 {
1839 int count, card;
1840 unsigned char freeirq;
1841 for (count=0; count < BOARD_COUNT; count++ ) {
1842 if (isi_card[count].base) {
1843 freeirq = YES;
1844 for(card = 0; card < count; card++)
1845 if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
1846 freeirq = NO;
1847 break;
1848 }
1849 if (freeirq == YES) {
1850 free_irq(isi_card[count].irq, NULL);
1851 #ifdef ISICOM_DEBUG
1852 printk(KERN_DEBUG "ISICOM: Irq %d released for Card%d.\n",isi_card[count].irq, count+1);
1853 #endif
1854 }
1855 }
1856 }
1857 }
1858
isicom_init(void)1859 static int isicom_init(void)
1860 {
1861 int card, channel, base;
1862 struct isi_port * port;
1863 unsigned long page;
1864
1865 if (!tmp_buf) {
1866 page = get_free_page(GFP_KERNEL);
1867 if (!page) {
1868 #ifdef ISICOM_DEBUG
1869 printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n");
1870 #else
1871 printk(KERN_ERR "ISICOM: Not enough memory...\n");
1872 #endif
1873 return 0;
1874 }
1875 tmp_buf = (unsigned char *) page;
1876 }
1877
1878 if (!register_ioregion())
1879 {
1880 printk(KERN_ERR "ISICOM: All required I/O space found busy.\n");
1881 free_page((unsigned long)tmp_buf);
1882 return 0;
1883 }
1884 if (register_drivers())
1885 {
1886 unregister_ioregion();
1887 free_page((unsigned long)tmp_buf);
1888 return 0;
1889 }
1890 if (!register_isr())
1891 {
1892 unregister_drivers();
1893 /* ioports already uregistered in register_isr */
1894 free_page((unsigned long)tmp_buf);
1895 return 0;
1896 }
1897
1898 /* initialize bottom half */
1899 init_bh(ISICOM_BH, do_isicom_bh);
1900
1901
1902 memset(isi_ports, 0, sizeof(isi_ports));
1903 for (card = 0; card < BOARD_COUNT; card++) {
1904 port = &isi_ports[card * 16];
1905 isi_card[card].ports = port;
1906 base = isi_card[card].base;
1907 for (channel = 0; channel < 16; channel++, port++) {
1908 port->magic = ISICOM_MAGIC;
1909 port->card = &isi_card[card];
1910 port->channel = channel;
1911 port->normal_termios = isicom_normal.init_termios;
1912 port->callout_termios = isicom_callout.init_termios;
1913 port->close_delay = 50 * HZ/100;
1914 port->closing_wait = 3000 * HZ/100;
1915 port->hangup_tq.routine = do_isicom_hangup;
1916 port->hangup_tq.data = port;
1917 port->bh_tqueue.routine = isicom_bottomhalf;
1918 port->bh_tqueue.data = port;
1919 port->status = 0;
1920 init_waitqueue_head(&port->open_wait);
1921 init_waitqueue_head(&port->close_wait);
1922 /* . . . */
1923 }
1924 }
1925
1926 return 1;
1927 }
1928
1929 /*
1930 * Insmod can set static symbols so keep these static
1931 */
1932
1933 static int io[4];
1934 static int irq[4];
1935
1936 MODULE_AUTHOR("MultiTech");
1937 MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1938 MODULE_LICENSE("GPL");
1939 MODULE_PARM(io, "1-4i");
1940 MODULE_PARM_DESC(io, "I/O ports for the cards");
1941 MODULE_PARM(irq, "1-4i");
1942 MODULE_PARM_DESC(irq, "Interrupts for the cards");
1943
init_module(void)1944 int init_module(void)
1945 {
1946 struct pci_dev *dev = NULL;
1947 int retval, card, idx, count;
1948 unsigned char pciirq;
1949 unsigned int ioaddr;
1950
1951 card = 0;
1952 for(idx=0; idx < BOARD_COUNT; idx++) {
1953 if (io[idx]) {
1954 isi_card[idx].base=io[idx];
1955 isi_card[idx].irq=irq[idx];
1956 isi_card[idx].isa=YES;
1957 card++;
1958 }
1959 else {
1960 isi_card[idx].base = 0;
1961 isi_card[idx].irq = 0;
1962 }
1963 }
1964
1965 for (idx=0 ;idx < card; idx++) {
1966 if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)||
1967 (isi_card[idx].irq==4)||(isi_card[idx].irq==5)||
1968 (isi_card[idx].irq==7)||(isi_card[idx].irq==10)||
1969 (isi_card[idx].irq==11)||(isi_card[idx].irq==12)||
1970 (isi_card[idx].irq==15))) {
1971
1972 if (isi_card[idx].base) {
1973 printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n",
1974 isi_card[idx].irq, idx+1);
1975 isi_card[idx].base=0;
1976 card--;
1977 }
1978 }
1979 }
1980
1981 if (pci_present() && (card < BOARD_COUNT)) {
1982 for (idx=0; idx < DEVID_COUNT; idx++) {
1983 dev = NULL;
1984 for (;;){
1985 if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev)))
1986 break;
1987 if (card >= BOARD_COUNT)
1988 break;
1989
1990 if (pci_enable_device(dev))
1991 break;
1992
1993 /* found a PCI ISI card! */
1994 ioaddr = pci_resource_start (dev, 3); /* i.e at offset 0x1c in the
1995 * PCI configuration register
1996 * space.
1997 */
1998 pciirq = dev->irq;
1999 printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device);
2000 /*
2001 * allot the first empty slot in the array
2002 */
2003 for (count=0; count < BOARD_COUNT; count++) {
2004 if (isi_card[count].base == 0) {
2005 isi_card[count].base = ioaddr;
2006 isi_card[count].irq = pciirq;
2007 isi_card[count].isa = NO;
2008 card++;
2009 break;
2010 }
2011 }
2012 }
2013 if (card >= BOARD_COUNT) break;
2014 }
2015 }
2016
2017 if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) {
2018 printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n");
2019 return -EIO;
2020 }
2021 retval=misc_register(&isiloader_device);
2022 if (retval<0) {
2023 printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n");
2024 return retval;
2025 }
2026
2027 if (!isicom_init()) {
2028 if (misc_deregister(&isiloader_device))
2029 printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
2030 return -EIO;
2031 }
2032
2033 init_timer(&tx);
2034 tx.expires = jiffies + 1;
2035 tx.data = 0;
2036 tx.function = isicom_tx;
2037 re_schedule = 1;
2038 add_timer(&tx);
2039
2040 return 0;
2041 }
2042
cleanup_module(void)2043 void cleanup_module(void)
2044 {
2045 re_schedule = 0;
2046 set_current_state(TASK_INTERRUPTIBLE);
2047 schedule_timeout(HZ);
2048
2049 remove_bh(ISICOM_BH);
2050
2051 #ifdef ISICOM_DEBUG
2052 printk("ISICOM: isicom_tx tx_count = %ld.\n", tx_count);
2053 #endif
2054
2055 #ifdef ISICOM_DEBUG
2056 printk("ISICOM: uregistering isr ...\n");
2057 #endif
2058 unregister_isr();
2059
2060 #ifdef ISICOM_DEBUG
2061 printk("ISICOM: unregistering drivers ...\n");
2062 #endif
2063 unregister_drivers();
2064
2065 #ifdef ISICOM_DEBUG
2066 printk("ISICOM: unregistering ioregion ...\n");
2067 #endif
2068 unregister_ioregion();
2069
2070 #ifdef ISICOM_DEBUG
2071 printk("ISICOM: freeing tmp_buf ...\n");
2072 #endif
2073 free_page((unsigned long)tmp_buf);
2074
2075 #ifdef ISICOM_DEBUG
2076 printk("ISICOM: unregistering firmware loader ...\n");
2077 #endif
2078 if (misc_deregister(&isiloader_device))
2079 printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
2080 }
2081