3aae7b16d2
not u_long. On i386's with 64-bit longs, returning u_longs indirectly in (more than) the space reserved for uintptr_t's tended to corrupt the previous frame pointer in the stack frame, so it was not easy to debug. The type mismatches are hidden by the bogus cast in DEVMETHOD().
319 lines
8.2 KiB
C
319 lines
8.2 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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* $FreeBSD$
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*/
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#include "opt_kbd.h"
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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 <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.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 irq; /* ISA IRQ mask */
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u_int32_t vendorid;
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u_int32_t serial;
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u_int32_t logicalid;
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u_int32_t compatid;
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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 int 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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uintptr_t *val);
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static int atkbdc_write_ivar(device_t bus, device_t dev, int index,
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uintptr_t 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(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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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 struct isa_pnp_id atkbdc_ids[] = {
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{ 0x0303d041, "Keyboard controller (i8042)" }, /* PNP0303 */
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{ 0 }
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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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struct resource *port0;
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struct resource *port1;
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int error;
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int rid;
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/* check PnP IDs */
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if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
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return ENXIO;
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device_set_desc(dev, "Keyboard controller (i8042)");
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rid = 0;
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port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
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RF_ACTIVE);
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if (port0 == NULL)
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return ENXIO;
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/* XXX */
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if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) {
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bus_set_resource(dev, SYS_RES_IOPORT, 1,
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rman_get_start(port0) + KBD_STATUS_PORT, 1);
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}
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rid = 1;
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port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
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RF_ACTIVE);
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if (port1 == NULL) {
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bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
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return ENXIO;
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}
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error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
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bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
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bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
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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_device_t *kdev;
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device_t child;
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int t;
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if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
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return;
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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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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);
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device_set_ivars(child, 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 unit;
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int error;
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int rid;
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int i;
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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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rid = 0;
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sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
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RF_ACTIVE);
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if (sc->port0 == NULL)
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return ENXIO;
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rid = 1;
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sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
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RF_ACTIVE);
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if (sc->port1 == NULL) {
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bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
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return ENXIO;
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}
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error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
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if (error) {
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bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
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bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
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return error;
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}
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*(atkbdc_softc_t **)device_get_softc(dev) = sc;
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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", device_get_nameunit(dev));
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i != -1;
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i = resource_query_string(i, "at", device_get_nameunit(dev))) {
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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", device_get_name(dev));
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i != -1;
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i = resource_query_string(i, "at", device_get_name(dev))) {
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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 int
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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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int retval = 0;
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kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
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retval += bus_print_child_header(bus, dev);
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if (kbdcdev->flags != 0)
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retval += printf(" flags 0x%x", kbdcdev->flags);
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if (kbdcdev->irq != -1)
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retval += printf(" irq %d", kbdcdev->irq);
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retval += bus_print_child_footer(bus, dev);
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return (retval);
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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, uintptr_t *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_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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case KBDC_IVAR_VENDORID:
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*val = (u_long)ivar->vendorid;
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break;
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case KBDC_IVAR_SERIAL:
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*val = (u_long)ivar->serial;
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break;
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case KBDC_IVAR_LOGICALID:
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*val = (u_long)ivar->logicalid;
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break;
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case KBDC_IVAR_COMPATID:
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*val = (u_long)ivar->compatid;
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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, uintptr_t 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_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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case KBDC_IVAR_VENDORID:
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ivar->vendorid = (u_int32_t)val;
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break;
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case KBDC_IVAR_SERIAL:
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ivar->serial = (u_int32_t)val;
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break;
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case KBDC_IVAR_LOGICALID:
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ivar->logicalid = (u_int32_t)val;
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break;
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case KBDC_IVAR_COMPATID:
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ivar->compatid = (u_int32_t)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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