lpt.c (ca3d37955c7c41e64a80c97b3f1c1fa4e9ff4897) lpt.c (6bfa9a2d66dd0e00182017d6741d44e54d0b2cca)
1/*-
2 * Copyright (c) 1990 William F. Jolitz, TeleMuse
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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456 * printer -- this is just used for passing ioctls.
457 */
458
459static int
460lptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
461{
462 int s;
463 int trys, err;
1/*-
2 * Copyright (c) 1990 William F. Jolitz, TeleMuse
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 447 unchanged lines hidden (view full) ---

456 * printer -- this is just used for passing ioctls.
457 */
458
459static int
460lptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
461{
462 int s;
463 int trys, err;
464 u_int unit = LPTUNIT(minor(dev));
464 u_int unit = LPTUNIT(dev2unit(dev));
465 struct lpt_data *sc = UNITOSOFTC(unit);
466 device_t lptdev = UNITODEVICE(unit);
467 device_t ppbus = device_get_parent(lptdev);
468
469 if (!sc)
470 return (ENXIO);
471
472 if (sc->sc_state) {
473 lprintf((LPT_NAME ": still open %x\n", sc->sc_state));
474 return(EBUSY);
475 } else
476 sc->sc_state |= LPTINIT;
477
465 struct lpt_data *sc = UNITOSOFTC(unit);
466 device_t lptdev = UNITODEVICE(unit);
467 device_t ppbus = device_get_parent(lptdev);
468
469 if (!sc)
470 return (ENXIO);
471
472 if (sc->sc_state) {
473 lprintf((LPT_NAME ": still open %x\n", sc->sc_state));
474 return(EBUSY);
475 } else
476 sc->sc_state |= LPTINIT;
477
478 sc->sc_flags = LPTFLAGS(minor(dev));
478 sc->sc_flags = LPTFLAGS(dev2unit(dev));
479
480 /* Check for open with BYPASS flag set. */
481 if (sc->sc_flags & LP_BYPASS) {
482 sc->sc_state = OPEN;
483 return(0);
484 }
485
486 /* request the ppbus only if we don't have it already */

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574 * lptclose -- close the device, free the local line buffer.
575 *
576 * Check for interrupted write call added.
577 */
578
579static int
580lptclose(struct cdev *dev, int flags, int fmt, struct thread *td)
581{
479
480 /* Check for open with BYPASS flag set. */
481 if (sc->sc_flags & LP_BYPASS) {
482 sc->sc_state = OPEN;
483 return(0);
484 }
485
486 /* request the ppbus only if we don't have it already */

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574 * lptclose -- close the device, free the local line buffer.
575 *
576 * Check for interrupted write call added.
577 */
578
579static int
580lptclose(struct cdev *dev, int flags, int fmt, struct thread *td)
581{
582 u_int unit = LPTUNIT(minor(dev));
582 u_int unit = LPTUNIT(dev2unit(dev));
583 struct lpt_data *sc = UNITOSOFTC(unit);
584 device_t lptdev = UNITODEVICE(unit);
585 device_t ppbus = device_get_parent(lptdev);
586 int err;
587
588 if(sc->sc_flags & LP_BYPASS)
589 goto end_close;
590

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683
684/*
685 * lptread --retrieve printer status in IEEE1284 NIBBLE mode
686 */
687
688static int
689lptread(struct cdev *dev, struct uio *uio, int ioflag)
690{
583 struct lpt_data *sc = UNITOSOFTC(unit);
584 device_t lptdev = UNITODEVICE(unit);
585 device_t ppbus = device_get_parent(lptdev);
586 int err;
587
588 if(sc->sc_flags & LP_BYPASS)
589 goto end_close;
590

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683
684/*
685 * lptread --retrieve printer status in IEEE1284 NIBBLE mode
686 */
687
688static int
689lptread(struct cdev *dev, struct uio *uio, int ioflag)
690{
691 u_int unit = LPTUNIT(minor(dev));
691 u_int unit = LPTUNIT(dev2unit(dev));
692 struct lpt_data *sc = UNITOSOFTC(unit);
693 device_t lptdev = UNITODEVICE(unit);
694 device_t ppbus = device_get_parent(lptdev);
695 int error = 0, len;
696
697 if (sc->sc_flags & LP_BYPASS) {
698 /* we can't do reads in bypass mode */
699 return (EPERM);

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730 * Flagging of interrupted write added.
731 */
732
733static int
734lptwrite(struct cdev *dev, struct uio *uio, int ioflag)
735{
736 register unsigned n;
737 int err;
692 struct lpt_data *sc = UNITOSOFTC(unit);
693 device_t lptdev = UNITODEVICE(unit);
694 device_t ppbus = device_get_parent(lptdev);
695 int error = 0, len;
696
697 if (sc->sc_flags & LP_BYPASS) {
698 /* we can't do reads in bypass mode */
699 return (EPERM);

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730 * Flagging of interrupted write added.
731 */
732
733static int
734lptwrite(struct cdev *dev, struct uio *uio, int ioflag)
735{
736 register unsigned n;
737 int err;
738 u_int unit = LPTUNIT(minor(dev));
738 u_int unit = LPTUNIT(dev2unit(dev));
739 struct lpt_data *sc = UNITOSOFTC(unit);
740 device_t lptdev = UNITODEVICE(unit);
741 device_t ppbus = device_get_parent(lptdev);
742
743 if(sc->sc_flags & LP_BYPASS) {
744 /* we can't do writes in bypass mode */
745 return(EPERM);
746 }

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897 splx(s);
898 return;
899}
900
901static int
902lptioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td)
903{
904 int error = 0;
739 struct lpt_data *sc = UNITOSOFTC(unit);
740 device_t lptdev = UNITODEVICE(unit);
741 device_t ppbus = device_get_parent(lptdev);
742
743 if(sc->sc_flags & LP_BYPASS) {
744 /* we can't do writes in bypass mode */
745 return(EPERM);
746 }

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897 splx(s);
898 return;
899}
900
901static int
902lptioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td)
903{
904 int error = 0;
905 u_int unit = LPTUNIT(minor(dev));
905 u_int unit = LPTUNIT(dev2unit(dev));
906 struct lpt_data *sc = UNITOSOFTC(unit);
907 u_char old_sc_irq; /* old printer IRQ status */
908
909 switch (cmd) {
910 case LPT_IRQ :
911 if(sc->sc_irq & LP_HAS_IRQ) {
912 /*
913 * NOTE:

--- 65 unchanged lines hidden --- 		906 struct lpt_data *sc = UNITOSOFTC(unit);
907 u_char old_sc_irq; /* old printer IRQ status */
908
909 switch (cmd) {
910 case LPT_IRQ :
911 if(sc->sc_irq & LP_HAS_IRQ) {
912 /*
913 * NOTE:

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