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authorJiri Slaby <jirislaby@gmail.com>2008-10-13 05:34:56 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-13 12:51:39 -0400
commitf1ddfd950221cca4d7ba753a71bc4b8930a42a43 (patch)
tree5051c57c141121e3ad1b6532908c202b1e5731d6 /drivers/char/ip2/ip2main.c
parent7ccd7020ef188b62781fe2f0a68131aa066d59a5 (diff)
ip2: init/deinit cleanup
Cleanup of module_init/exit: - mostly whitespace - remove empty functions - replace c++ comments - remove useless prints (module loaded, unloaded) - mark the calls as __exit and __init - use break; and return; to save some indent levels after it - note resource leakage It's still mess, but now it's readable. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/ip2/ip2main.c')
-rw-r--r--drivers/char/ip2/ip2main.c415
1 files changed, 198 insertions, 217 deletions
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 098c9de3022d..39269d19a02d 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -314,31 +314,27 @@ MODULE_PARM_DESC(poll_only, "Do not use card interrupts");
314/* for sysfs class support */ 314/* for sysfs class support */
315static struct class *ip2_class; 315static struct class *ip2_class;
316 316
317// Some functions to keep track of what irq's we have 317/* Some functions to keep track of what irqs we have */
318 318
319static int 319static int __init is_valid_irq(int irq)
320is_valid_irq(int irq)
321{ 320{
322 int *i = Valid_Irqs; 321 int *i = Valid_Irqs;
323 322
324 while ((*i != 0) && (*i != irq)) { 323 while (*i != 0 && *i != irq)
325 i++; 324 i++;
326 } 325
327 return (*i); 326 return *i;
328} 327}
329 328
330static void 329static void __init mark_requested_irq(char irq)
331mark_requested_irq( char irq )
332{ 330{
333 rirqs[iindx++] = irq; 331 rirqs[iindx++] = irq;
334} 332}
335 333
336#ifdef MODULE 334static int __exit clear_requested_irq(char irq)
337static int
338clear_requested_irq( char irq )
339{ 335{
340 int i; 336 int i;
341 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 337 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
342 if (rirqs[i] == irq) { 338 if (rirqs[i] == irq) {
343 rirqs[i] = 0; 339 rirqs[i] = 0;
344 return 1; 340 return 1;
@@ -346,17 +342,15 @@ clear_requested_irq( char irq )
346 } 342 }
347 return 0; 343 return 0;
348} 344}
349#endif
350 345
351static int 346static int have_requested_irq(char irq)
352have_requested_irq( char irq )
353{ 347{
354 // array init to zeros so 0 irq will not be requested as a side effect 348 /* array init to zeros so 0 irq will not be requested as a side
349 * effect */
355 int i; 350 int i;
356 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 351 for (i = 0; i < IP2_MAX_BOARDS; ++i)
357 if (rirqs[i] == irq) 352 if (rirqs[i] == irq)
358 return 1; 353 return 1;
359 }
360 return 0; 354 return 0;
361} 355}
362 356
@@ -380,46 +374,44 @@ static void __exit ip2_cleanup_module(void)
380 int err; 374 int err;
381 int i; 375 int i;
382 376
383#ifdef IP2DEBUG_INIT
384 printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion );
385#endif
386 /* Stop poll timer if we had one. */ 377 /* Stop poll timer if we had one. */
387 if ( TimerOn ) { 378 if (TimerOn) {
388 del_timer ( &PollTimer ); 379 del_timer(&PollTimer);
389 TimerOn = 0; 380 TimerOn = 0;
390 } 381 }
391 382
392 /* Reset the boards we have. */ 383 /* Reset the boards we have. */
393 for( i = 0; i < IP2_MAX_BOARDS; ++i ) { 384 for (i = 0; i < IP2_MAX_BOARDS; i++)
394 if ( i2BoardPtrTable[i] ) { 385 if (i2BoardPtrTable[i])
395 iiReset( i2BoardPtrTable[i] ); 386 iiReset(i2BoardPtrTable[i]);
396 }
397 }
398 387
399 /* The following is done at most once, if any boards were installed. */ 388 /* The following is done at most once, if any boards were installed. */
400 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 389 for (i = 0; i < IP2_MAX_BOARDS; i++) {
401 if ( i2BoardPtrTable[i] ) { 390 if (i2BoardPtrTable[i]) {
402 iiResetDelay( i2BoardPtrTable[i] ); 391 iiResetDelay(i2BoardPtrTable[i]);
403 /* free io addresses and Tibet */ 392 /* free io addresses and Tibet */
404 release_region( ip2config.addr[i], 8 ); 393 release_region(ip2config.addr[i], 8);
405 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); 394 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
406 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); 395 device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR,
396 4 * i + 1));
407 } 397 }
408 /* Disable and remove interrupt handler. */ 398 /* Disable and remove interrupt handler. */
409 if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { 399 if (ip2config.irq[i] > 0 &&
410 free_irq ( ip2config.irq[i], (void *)&pcName); 400 have_requested_irq(ip2config.irq[i])) {
411 clear_requested_irq( ip2config.irq[i]); 401 free_irq(ip2config.irq[i], (void *)&pcName);
402 clear_requested_irq(ip2config.irq[i]);
412 } 403 }
413 } 404 }
414 class_destroy(ip2_class); 405 class_destroy(ip2_class);
415 if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) { 406 err = tty_unregister_driver(ip2_tty_driver);
416 printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); 407 if (err)
417 } 408 printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n",
409 err);
418 put_tty_driver(ip2_tty_driver); 410 put_tty_driver(ip2_tty_driver);
419 unregister_chrdev(IP2_IPL_MAJOR, pcIpl); 411 unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
420 remove_proc_entry("ip2mem", NULL); 412 remove_proc_entry("ip2mem", NULL);
421 413
422 // free memory 414 /* free memory */
423 for (i = 0; i < IP2_MAX_BOARDS; i++) { 415 for (i = 0; i < IP2_MAX_BOARDS; i++) {
424 void *pB; 416 void *pB;
425#ifdef CONFIG_PCI 417#ifdef CONFIG_PCI
@@ -431,20 +423,14 @@ static void __exit ip2_cleanup_module(void)
431#endif 423#endif
432 pB = i2BoardPtrTable[i]; 424 pB = i2BoardPtrTable[i];
433 if (pB != NULL) { 425 if (pB != NULL) {
434 kfree ( pB ); 426 kfree(pB);
435 i2BoardPtrTable[i] = NULL; 427 i2BoardPtrTable[i] = NULL;
436 } 428 }
437 if ((DevTableMem[i]) != NULL ) { 429 if (DevTableMem[i] != NULL) {
438 kfree ( DevTableMem[i] ); 430 kfree(DevTableMem[i]);
439 DevTableMem[i] = NULL; 431 DevTableMem[i] = NULL;
440 } 432 }
441 } 433 }
442
443 /* Cleanup the iiEllis subsystem. */
444 iiEllisCleanup();
445#ifdef IP2DEBUG_INIT
446 printk (KERN_DEBUG "IP2 Unloaded\n" );
447#endif
448} 434}
449module_exit(ip2_cleanup_module); 435module_exit(ip2_cleanup_module);
450 436
@@ -552,14 +538,13 @@ static int __init ip2_setup(char *str)
552__setup("ip2=", ip2_setup); 538__setup("ip2=", ip2_setup);
553#endif /* !MODULE */ 539#endif /* !MODULE */
554 540
555static int ip2_loadmain(void) 541static int __init ip2_loadmain(void)
556{ 542{
557 int i, j, box; 543 int i, j, box;
558 int err = 0; 544 int err = 0;
559 static int loaded;
560 i2eBordStrPtr pB = NULL; 545 i2eBordStrPtr pB = NULL;
561 int rc = -1; 546 int rc = -1;
562 static struct pci_dev *pci_dev_i = NULL; 547 struct pci_dev *pdev = NULL;
563 const struct firmware *fw = NULL; 548 const struct firmware *fw = NULL;
564 549
565 if (poll_only) { 550 if (poll_only) {
@@ -567,119 +552,108 @@ static int ip2_loadmain(void)
567 irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0; 552 irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0;
568 } 553 }
569 554
570 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 ); 555 ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0);
571 556
572 /* process command line arguments to modprobe or 557 /* process command line arguments to modprobe or
573 insmod i.e. iop & irqp */ 558 insmod i.e. iop & irqp */
574 /* irqp and iop should ALWAYS be specified now... But we check 559 /* irqp and iop should ALWAYS be specified now... But we check
575 them individually just to be sure, anyways... */ 560 them individually just to be sure, anyways... */
576 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 561 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
577 ip2config.addr[i] = io[i]; 562 ip2config.addr[i] = io[i];
578 if (irq[i] >= 0) 563 if (irq[i] >= 0)
579 ip2config.irq[i] = irq[i]; 564 ip2config.irq[i] = irq[i];
580 else 565 else
581 ip2config.irq[i] = 0; 566 ip2config.irq[i] = 0;
582 // This is a little bit of a hack. If poll_only=1 on command 567 /* This is a little bit of a hack. If poll_only=1 on command
583 // line back in ip2.c OR all IRQs on all specified boards are 568 line back in ip2.c OR all IRQs on all specified boards are
584 // explicitly set to 0, then drop to poll only mode and override 569 explicitly set to 0, then drop to poll only mode and override
585 // PCI or EISA interrupts. This superceeds the old hack of 570 PCI or EISA interrupts. This superceeds the old hack of
586 // triggering if all interrupts were zero (like da default). 571 triggering if all interrupts were zero (like da default).
587 // Still a hack but less prone to random acts of terrorism. 572 Still a hack but less prone to random acts of terrorism.
588 // 573
589 // What we really should do, now that the IRQ default is set 574 What we really should do, now that the IRQ default is set
590 // to -1, is to use 0 as a hard coded, do not probe. 575 to -1, is to use 0 as a hard coded, do not probe.
591 // 576
592 // /\/\|=mhw=|\/\/ 577 /\/\|=mhw=|\/\/
578 */
593 poll_only |= irq[i]; 579 poll_only |= irq[i];
594 } 580 }
595 poll_only = !poll_only; 581 poll_only = !poll_only;
596 582
597 /* Announce our presence */ 583 /* Announce our presence */
598 printk( KERN_INFO "%s version %s\n", pcName, pcVersion ); 584 printk(KERN_INFO "%s version %s\n", pcName, pcVersion);
599
600 // ip2 can be unloaded and reloaded for no good reason
601 // we can't let that happen here or bad things happen
602 // second load hoses board but not system - fixme later
603 if (loaded) {
604 printk( KERN_INFO "Still loaded\n" );
605 return 0;
606 }
607 loaded++;
608 585
609 ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); 586 ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
610 if (!ip2_tty_driver) 587 if (!ip2_tty_driver)
611 return -ENOMEM; 588 return -ENOMEM;
612 589
613 /* Initialise the iiEllis subsystem. */
614 iiEllisInit();
615
616 /* Initialise all the boards we can find (up to the maximum). */ 590 /* Initialise all the boards we can find (up to the maximum). */
617 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 591 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
618 switch ( ip2config.addr[i] ) { 592 switch (ip2config.addr[i]) {
619 case 0: /* skip this slot even if card is present */ 593 case 0: /* skip this slot even if card is present */
620 break; 594 break;
621 default: /* ISA */ 595 default: /* ISA */
622 /* ISA address must be specified */ 596 /* ISA address must be specified */
623 if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) { 597 if (ip2config.addr[i] < 0x100 ||
624 printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n", 598 ip2config.addr[i] > 0x3f8) {
625 i, ip2config.addr[i] ); 599 printk(KERN_ERR "IP2: Bad ISA board %d "
600 "address %x\n", i,
601 ip2config.addr[i]);
626 ip2config.addr[i] = 0; 602 ip2config.addr[i] = 0;
627 } else { 603 break;
628 ip2config.type[i] = ISA; 604 }
629 605 ip2config.type[i] = ISA;
630 /* Check for valid irq argument, set for polling if invalid */ 606
631 if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) { 607 /* Check for valid irq argument, set for polling if
632 printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]); 608 * invalid */
633 ip2config.irq[i] = 0;// 0 is polling and is valid in that sense 609 if (ip2config.irq[i] &&
634 } 610 !is_valid_irq(ip2config.irq[i])) {
611 printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",
612 ip2config.irq[i]);
613 /* 0 is polling and is valid in that sense */
614 ip2config.irq[i] = 0;
635 } 615 }
636 break; 616 break;
637 case PCI: 617 case PCI:
638#ifdef CONFIG_PCI 618#ifdef CONFIG_PCI
639 { 619 {
640 int status; 620 u32 addr;
621 int status;
641 622
642 pci_dev_i = pci_get_device(PCI_VENDOR_ID_COMPUTONE, 623 pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE,
643 PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i); 624 PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev);
644 if (pci_dev_i != NULL) { 625 if (pdev == NULL) {
645 unsigned int addr; 626 ip2config.addr[i] = 0;
646 627 printk(KERN_ERR "IP2: PCI board %d not "
647 if (pci_enable_device(pci_dev_i)) { 628 "found\n", i);
648 printk( KERN_ERR "IP2: can't enable PCI device at %s\n", 629 break;
649 pci_name(pci_dev_i)); 630 }
650 break;
651 }
652 ip2config.type[i] = PCI;
653 ip2config.pci_dev[i] = pci_dev_get(pci_dev_i);
654 status =
655 pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr);
656 if ( addr & 1 ) {
657 ip2config.addr[i]=(USHORT)(addr&0xfffe);
658 } else {
659 printk( KERN_ERR "IP2: PCI I/O address error\n");
660 }
661 631
662// If the PCI BIOS assigned it, lets try and use it. If we 632 if (pci_enable_device(pdev)) {
663// can't acquire it or it screws up, deal with it then. 633 dev_err(&pdev->dev, "can't enable device\n");
664 634 break;
665// if (!is_valid_irq(pci_irq)) {
666// printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq);
667// pci_irq = 0;
668// }
669 ip2config.irq[i] = pci_dev_i->irq;
670 } else { // ann error
671 ip2config.addr[i] = 0;
672 printk(KERN_ERR "IP2: PCI board %d not found\n", i);
673 }
674 } 635 }
636 ip2config.type[i] = PCI;
637 ip2config.pci_dev[i] = pci_dev_get(pdev);
638 status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1,
639 &addr);
640 if (addr & 1)
641 ip2config.addr[i] = (USHORT)(addr & 0xfffe);
642 else
643 dev_err(&pdev->dev, "I/O address error\n");
644
645 ip2config.irq[i] = pdev->irq;
646 }
675#else 647#else
676 printk( KERN_ERR "IP2: PCI card specified but PCI support not\n"); 648 printk(KERN_ERR "IP2: PCI card specified but PCI "
677 printk( KERN_ERR "IP2: configured in this kernel.\n"); 649 "support not enabled.\n");
678 printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n"); 650 printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI "
651 "defined!\n");
679#endif /* CONFIG_PCI */ 652#endif /* CONFIG_PCI */
680 break; 653 break;
681 case EISA: 654 case EISA:
682 if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) { 655 ip2config.addr[i] = find_eisa_board(Eisa_slot + 1);
656 if (ip2config.addr[i] != 0) {
683 /* Eisa_irq set as side effect, boo */ 657 /* Eisa_irq set as side effect, boo */
684 ip2config.type[i] = EISA; 658 ip2config.type[i] = EISA;
685 } 659 }
@@ -687,31 +661,32 @@ static int ip2_loadmain(void)
687 break; 661 break;
688 } /* switch */ 662 } /* switch */
689 } /* for */ 663 } /* for */
690 if (pci_dev_i) 664 pci_dev_put(pdev);
691 pci_dev_put(pci_dev_i);
692 665
693 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 666 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
694 if ( ip2config.addr[i] ) { 667 if (ip2config.addr[i]) {
695 pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL); 668 pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL);
696 if (pB) { 669 if (pB) {
697 i2BoardPtrTable[i] = pB; 670 i2BoardPtrTable[i] = pB;
698 iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer ); 671 iiSetAddress(pB, ip2config.addr[i],
699 iiReset( pB ); 672 ii2DelayTimer);
700 } else { 673 iiReset(pB);
701 printk(KERN_ERR "IP2: board memory allocation error\n"); 674 } else
702 } 675 printk(KERN_ERR "IP2: board memory allocation "
676 "error\n");
703 } 677 }
704 } 678 }
705 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 679 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
706 if ( ( pB = i2BoardPtrTable[i] ) != NULL ) { 680 pB = i2BoardPtrTable[i];
707 iiResetDelay( pB ); 681 if (pB != NULL) {
682 iiResetDelay(pB);
708 break; 683 break;
709 } 684 }
710 } 685 }
711 for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { 686 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
712 /* We don't want to request the firmware unless we have at 687 /* We don't want to request the firmware unless we have at
713 least one board */ 688 least one board */
714 if ( i2BoardPtrTable[i] != NULL ) { 689 if (i2BoardPtrTable[i] != NULL) {
715 if (!fw) 690 if (!fw)
716 fw = ip2_request_firmware(); 691 fw = ip2_request_firmware();
717 if (!fw) 692 if (!fw)
@@ -722,7 +697,7 @@ static int ip2_loadmain(void)
722 if (fw) 697 if (fw)
723 release_firmware(fw); 698 release_firmware(fw);
724 699
725 ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 ); 700 ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0);
726 701
727 ip2_tty_driver->owner = THIS_MODULE; 702 ip2_tty_driver->owner = THIS_MODULE;
728 ip2_tty_driver->name = "ttyF"; 703 ip2_tty_driver->name = "ttyF";
@@ -733,20 +708,23 @@ static int ip2_loadmain(void)
733 ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; 708 ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
734 ip2_tty_driver->init_termios = tty_std_termios; 709 ip2_tty_driver->init_termios = tty_std_termios;
735 ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; 710 ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
736 ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; 711 ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW |
712 TTY_DRIVER_DYNAMIC_DEV;
737 tty_set_operations(ip2_tty_driver, &ip2_ops); 713 tty_set_operations(ip2_tty_driver, &ip2_ops);
738 714
739 ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); 715 ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0);
740 716
741 /* Register the tty devices. */ 717 err = tty_register_driver(ip2_tty_driver);
742 if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) { 718 if (err) {
743 printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err); 719 printk(KERN_ERR "IP2: failed to register tty driver\n");
744 put_tty_driver(ip2_tty_driver); 720 put_tty_driver(ip2_tty_driver);
745 return -EINVAL; 721 return err; /* leaking resources */
746 } else 722 }
747 /* Register the IPL driver. */ 723
748 if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) { 724 err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl);
749 printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err ); 725 if (err) {
726 printk(KERN_ERR "IP2: failed to register IPL device (%d)\n",
727 err);
750 } else { 728 } else {
751 /* create the sysfs class */ 729 /* create the sysfs class */
752 ip2_class = class_create(THIS_MODULE, "ip2"); 730 ip2_class = class_create(THIS_MODULE, "ip2");
@@ -758,82 +736,85 @@ static int ip2_loadmain(void)
758 /* Register the read_procmem thing */ 736 /* Register the read_procmem thing */
759 if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) { 737 if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) {
760 printk(KERN_ERR "IP2: failed to register read_procmem\n"); 738 printk(KERN_ERR "IP2: failed to register read_procmem\n");
761 } else { 739 return -EIO; /* leaking resources */
740 }
762 741
763 ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 ); 742 ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0);
764 /* Register the interrupt handler or poll handler, depending upon the 743 /* Register the interrupt handler or poll handler, depending upon the
765 * specified interrupt. 744 * specified interrupt.
766 */ 745 */
767 746
768 for( i = 0; i < IP2_MAX_BOARDS; ++i ) { 747 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
769 if ( 0 == ip2config.addr[i] ) { 748 if (ip2config.addr[i] == 0)
770 continue; 749 continue;
771 }
772 750
773 if ( NULL != ( pB = i2BoardPtrTable[i] ) ) { 751 pB = i2BoardPtrTable[i];
774 device_create_drvdata(ip2_class, NULL, 752 if (pB != NULL) {
775 MKDEV(IP2_IPL_MAJOR, 4 * i), 753 device_create_drvdata(ip2_class, NULL,
776 NULL, "ipl%d", i); 754 MKDEV(IP2_IPL_MAJOR, 4 * i),
777 device_create_drvdata(ip2_class, NULL, 755 NULL, "ipl%d", i);
778 MKDEV(IP2_IPL_MAJOR, 4 * i + 1), 756 device_create_drvdata(ip2_class, NULL,
779 NULL, "stat%d", i); 757 MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
780 758 NULL, "stat%d", i);
781 for ( box = 0; box < ABS_MAX_BOXES; ++box ) 759
782 { 760 for (box = 0; box < ABS_MAX_BOXES; box++)
783 for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) 761 for (j = 0; j < ABS_BIGGEST_BOX; j++)
784 { 762 if (pB->i2eChannelMap[box] & (1 << j))
785 if ( pB->i2eChannelMap[box] & (1 << j) ) 763 tty_register_device(
786 { 764 ip2_tty_driver,
787 tty_register_device(ip2_tty_driver, 765 j + ABS_BIGGEST_BOX *
788 j + ABS_BIGGEST_BOX * 766 (box+i*ABS_MAX_BOXES),
789 (box+i*ABS_MAX_BOXES), NULL); 767 NULL);
790 } 768 }
791 }
792 }
793 }
794 769
795 if (poll_only) { 770 if (poll_only) {
796// Poll only forces driver to only use polling and 771 /* Poll only forces driver to only use polling and
797// to ignore the probed PCI or EISA interrupts. 772 to ignore the probed PCI or EISA interrupts. */
798 ip2config.irq[i] = CIR_POLL; 773 ip2config.irq[i] = CIR_POLL;
799 } 774 }
800 if ( ip2config.irq[i] == CIR_POLL ) { 775 if (ip2config.irq[i] == CIR_POLL) {
801retry: 776retry:
802 if (!TimerOn) { 777 if (!TimerOn) {
803 PollTimer.expires = POLL_TIMEOUT; 778 PollTimer.expires = POLL_TIMEOUT;
804 add_timer ( &PollTimer ); 779 add_timer(&PollTimer);
805 TimerOn = 1; 780 TimerOn = 1;
806 printk( KERN_INFO "IP2: polling\n"); 781 printk(KERN_INFO "IP2: polling\n");
807 }
808 } else {
809 if (have_requested_irq(ip2config.irq[i]))
810 continue;
811 rc = request_irq( ip2config.irq[i], ip2_interrupt,
812 IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
813 pcName, i2BoardPtrTable[i]);
814 if (rc) {
815 printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
816 ip2config.irq[i] = CIR_POLL;
817 printk( KERN_INFO "IP2: Polling %ld/sec.\n",
818 (POLL_TIMEOUT - jiffies));
819 goto retry;
820 }
821 mark_requested_irq(ip2config.irq[i]);
822 /* Initialise the interrupt handler bottom half (aka slih). */
823 } 782 }
824 } 783 } else {
825 for( i = 0; i < IP2_MAX_BOARDS; ++i ) { 784 if (have_requested_irq(ip2config.irq[i]))
826 if ( i2BoardPtrTable[i] ) { 785 continue;
827 set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */ 786 rc = request_irq(ip2config.irq[i], ip2_interrupt,
787 IP2_SA_FLAGS |
788 (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
789 pcName, i2BoardPtrTable[i]);
790 if (rc) {
791 printk(KERN_ERR "IP2: request_irq failed: "
792 "error %d\n", rc);
793 ip2config.irq[i] = CIR_POLL;
794 printk(KERN_INFO "IP2: Polling %ld/sec.\n",
795 (POLL_TIMEOUT - jiffies));
796 goto retry;
828 } 797 }
798 mark_requested_irq(ip2config.irq[i]);
799 /* Initialise the interrupt handler bottom half
800 * (aka slih). */
829 } 801 }
830 } 802 }
831 ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 ); 803
832 goto out; 804 for (i = 0; i < IP2_MAX_BOARDS; ++i) {
805 if (i2BoardPtrTable[i]) {
806 /* set and enable board interrupt */
807 set_irq(i, ip2config.irq[i]);
808 }
809 }
810
811 ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0);
812
813 return 0;
833 814
834out_chrdev: 815out_chrdev:
835 unregister_chrdev(IP2_IPL_MAJOR, "ip2"); 816 unregister_chrdev(IP2_IPL_MAJOR, "ip2");
836out: 817 /* unregister and put tty here */
837 return err; 818 return err;
838} 819}
839module_init(ip2_loadmain); 820module_init(ip2_loadmain);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-26 08:31:14 -0500