244 lines
6.2 KiB
C
244 lines
6.2 KiB
C
/*-
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* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer as
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* the first lines of this file unmodified.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: atkbdc_isa.c,v 1.4 1999/05/08 21:59:29 dfr Exp $
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*/
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#include "atkbdc.h"
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#include "opt_kbd.h"
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#if NATKBDC > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <dev/kbd/atkbdcreg.h>
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#include <isa/isareg.h>
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#include <isa/isavar.h>
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MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device");
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/* children */
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typedef struct atkbdc_device {
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int flags; /* configuration flags */
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int port; /* port number (same as the controller's) */
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int irq; /* ISA IRQ mask */
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} atkbdc_device_t;
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/* kbdc */
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devclass_t atkbdc_devclass;
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static int atkbdc_probe(device_t dev);
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static int atkbdc_attach(device_t dev);
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static void atkbdc_print_child(device_t bus, device_t dev);
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static int atkbdc_read_ivar(device_t bus, device_t dev, int index,
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u_long *val);
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static int atkbdc_write_ivar(device_t bus, device_t dev, int index,
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u_long val);
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static device_method_t atkbdc_methods[] = {
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DEVMETHOD(device_probe, atkbdc_probe),
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DEVMETHOD(device_attach, atkbdc_attach),
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DEVMETHOD(bus_print_child, atkbdc_print_child),
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DEVMETHOD(bus_read_ivar, atkbdc_read_ivar),
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DEVMETHOD(bus_write_ivar, atkbdc_write_ivar),
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DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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{ 0, 0 }
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};
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static driver_t atkbdc_driver = {
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ATKBDC_DRIVER_NAME,
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atkbdc_methods,
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sizeof(atkbdc_softc_t *),
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};
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static int
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atkbdc_probe(device_t dev)
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{
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atkbdc_softc_t *sc;
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int unit;
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int error;
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unit = device_get_unit(dev);
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sc = *(atkbdc_softc_t **)device_get_softc(dev);
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if (sc == NULL) {
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/*
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* We have to maintain two copies of the kbdc_softc struct,
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* as the low-level console needs to have access to the
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* keyboard controller before kbdc is probed and attached.
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* kbdc_soft[] contains the default entry for that purpose.
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* See atkbdc.c. XXX
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*/
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sc = atkbdc_get_softc(unit);
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if (sc == NULL)
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return ENOMEM;
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}
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device_set_desc(dev, "keyboard controller (i8042)");
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error = atkbdc_probe_unit(sc, unit, isa_get_port(dev));
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if (error == 0)
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*(atkbdc_softc_t **)device_get_softc(dev) = sc;
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return error;
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}
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static void
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atkbdc_add_device(device_t dev, const char *name, int unit)
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{
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atkbdc_softc_t *sc = *(atkbdc_softc_t **)device_get_softc(dev);
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atkbdc_device_t *kdev;
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device_t child;
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int t;
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kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT);
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if (!kdev)
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return;
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bzero(kdev, sizeof *kdev);
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kdev->port = sc->port;
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if (resource_int_value(name, unit, "irq", &t) == 0)
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kdev->irq = t;
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else
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kdev->irq = -1;
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if (resource_int_value(name, unit, "flags", &t) == 0)
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kdev->flags = t;
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else
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kdev->flags = 0;
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child = device_add_child(dev, name, unit, kdev);
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}
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static int
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atkbdc_attach(device_t dev)
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{
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atkbdc_softc_t *sc;
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int i;
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sc = *(atkbdc_softc_t **)device_get_softc(dev);
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if ((sc == NULL) || (sc->port <= 0))
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return ENXIO;
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/*
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* Add all devices configured to be attached to atkbdc0.
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*/
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for (i = resource_query_string(-1, "at", "atkbdc0");
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i != -1;
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i = resource_query_string(i, "at", "atkbdc0")) {
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atkbdc_add_device(dev, resource_query_name(i),
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resource_query_unit(i));
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}
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/*
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* and atkbdc?
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*/
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for (i = resource_query_string(-1, "at", "atkbdc");
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i != -1;
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i = resource_query_string(i, "at", "atkbdc")) {
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atkbdc_add_device(dev, resource_query_name(i),
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resource_query_unit(i));
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}
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bus_generic_attach(dev);
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return 0;
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}
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static void
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atkbdc_print_child(device_t bus, device_t dev)
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{
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atkbdc_device_t *kbdcdev;
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kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
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if (kbdcdev->flags != 0)
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printf(" flags 0x%x", kbdcdev->flags);
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if (kbdcdev->irq != -1)
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printf(" irq %d", kbdcdev->irq);
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printf(" on %s%d", device_get_name(bus), device_get_unit(bus));
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}
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static int
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atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
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{
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atkbdc_device_t *ivar;
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ivar = (atkbdc_device_t *)device_get_ivars(dev);
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switch (index) {
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case KBDC_IVAR_PORT:
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*val = (u_long)ivar->port;
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break;
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case KBDC_IVAR_IRQ:
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*val = (u_long)ivar->irq;
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break;
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case KBDC_IVAR_FLAGS:
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*val = (u_long)ivar->flags;
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break;
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default:
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return ENOENT;
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}
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return 0;
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}
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static int
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atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
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{
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atkbdc_device_t *ivar;
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ivar = (atkbdc_device_t *)device_get_ivars(dev);
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switch (index) {
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case KBDC_IVAR_PORT:
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ivar->port = (int)val;
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break;
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case KBDC_IVAR_IRQ:
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ivar->irq = (int)val;
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break;
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case KBDC_IVAR_FLAGS:
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ivar->flags = (int)val;
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break;
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default:
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return ENOENT;
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}
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return 0;
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}
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DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);
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#endif /* NATKBDC > 0 */
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