freebsd-dev/sys/isa/atkbdc_isa.c
Bruce Evans 3aae7b16d2 Fixed the type of some ivar access functions. Ivars have type uintptr_t,
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().
2000-04-30 10:01:56 +00:00

319 lines
8.2 KiB
C

/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include "opt_kbd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/kbd/atkbdcreg.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device");
/* children */
typedef struct atkbdc_device {
int flags; /* configuration flags */
int irq; /* ISA IRQ mask */
u_int32_t vendorid;
u_int32_t serial;
u_int32_t logicalid;
u_int32_t compatid;
} atkbdc_device_t;
/* kbdc */
devclass_t atkbdc_devclass;
static int atkbdc_probe(device_t dev);
static int atkbdc_attach(device_t dev);
static int atkbdc_print_child(device_t bus, device_t dev);
static int atkbdc_read_ivar(device_t bus, device_t dev, int index,
uintptr_t *val);
static int atkbdc_write_ivar(device_t bus, device_t dev, int index,
uintptr_t val);
static device_method_t atkbdc_methods[] = {
DEVMETHOD(device_probe, atkbdc_probe),
DEVMETHOD(device_attach, atkbdc_attach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(bus_print_child, atkbdc_print_child),
DEVMETHOD(bus_read_ivar, atkbdc_read_ivar),
DEVMETHOD(bus_write_ivar, atkbdc_write_ivar),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
{ 0, 0 }
};
static driver_t atkbdc_driver = {
ATKBDC_DRIVER_NAME,
atkbdc_methods,
sizeof(atkbdc_softc_t *),
};
static struct isa_pnp_id atkbdc_ids[] = {
{ 0x0303d041, "Keyboard controller (i8042)" }, /* PNP0303 */
{ 0 }
};
static int
atkbdc_probe(device_t dev)
{
struct resource *port0;
struct resource *port1;
int error;
int rid;
/* check PnP IDs */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
return ENXIO;
device_set_desc(dev, "Keyboard controller (i8042)");
rid = 0;
port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
RF_ACTIVE);
if (port0 == NULL)
return ENXIO;
/* XXX */
if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) {
bus_set_resource(dev, SYS_RES_IOPORT, 1,
rman_get_start(port0) + KBD_STATUS_PORT, 1);
}
rid = 1;
port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
RF_ACTIVE);
if (port1 == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
return ENXIO;
}
error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
return error;
}
static void
atkbdc_add_device(device_t dev, const char *name, int unit)
{
atkbdc_device_t *kdev;
device_t child;
int t;
if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
return;
kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT);
if (!kdev)
return;
bzero(kdev, sizeof *kdev);
if (resource_int_value(name, unit, "irq", &t) == 0)
kdev->irq = t;
else
kdev->irq = -1;
if (resource_int_value(name, unit, "flags", &t) == 0)
kdev->flags = t;
else
kdev->flags = 0;
child = device_add_child(dev, name, unit);
device_set_ivars(child, kdev);
}
static int
atkbdc_attach(device_t dev)
{
atkbdc_softc_t *sc;
int unit;
int error;
int rid;
int i;
unit = device_get_unit(dev);
sc = *(atkbdc_softc_t **)device_get_softc(dev);
if (sc == NULL) {
/*
* We have to maintain two copies of the kbdc_softc struct,
* as the low-level console needs to have access to the
* keyboard controller before kbdc is probed and attached.
* kbdc_soft[] contains the default entry for that purpose.
* See atkbdc.c. XXX
*/
sc = atkbdc_get_softc(unit);
if (sc == NULL)
return ENOMEM;
}
rid = 0;
sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
RF_ACTIVE);
if (sc->port0 == NULL)
return ENXIO;
rid = 1;
sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
RF_ACTIVE);
if (sc->port1 == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
return ENXIO;
}
error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
if (error) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
return error;
}
*(atkbdc_softc_t **)device_get_softc(dev) = sc;
/*
* Add all devices configured to be attached to atkbdc0.
*/
for (i = resource_query_string(-1, "at", device_get_nameunit(dev));
i != -1;
i = resource_query_string(i, "at", device_get_nameunit(dev))) {
atkbdc_add_device(dev, resource_query_name(i),
resource_query_unit(i));
}
/*
* and atkbdc?
*/
for (i = resource_query_string(-1, "at", device_get_name(dev));
i != -1;
i = resource_query_string(i, "at", device_get_name(dev))) {
atkbdc_add_device(dev, resource_query_name(i),
resource_query_unit(i));
}
bus_generic_attach(dev);
return 0;
}
static int
atkbdc_print_child(device_t bus, device_t dev)
{
atkbdc_device_t *kbdcdev;
int retval = 0;
kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
retval += bus_print_child_header(bus, dev);
if (kbdcdev->flags != 0)
retval += printf(" flags 0x%x", kbdcdev->flags);
if (kbdcdev->irq != -1)
retval += printf(" irq %d", kbdcdev->irq);
retval += bus_print_child_footer(bus, dev);
return (retval);
}
static int
atkbdc_read_ivar(device_t bus, device_t dev, int index, uintptr_t *val)
{
atkbdc_device_t *ivar;
ivar = (atkbdc_device_t *)device_get_ivars(dev);
switch (index) {
case KBDC_IVAR_IRQ:
*val = (u_long)ivar->irq;
break;
case KBDC_IVAR_FLAGS:
*val = (u_long)ivar->flags;
break;
case KBDC_IVAR_VENDORID:
*val = (u_long)ivar->vendorid;
break;
case KBDC_IVAR_SERIAL:
*val = (u_long)ivar->serial;
break;
case KBDC_IVAR_LOGICALID:
*val = (u_long)ivar->logicalid;
break;
case KBDC_IVAR_COMPATID:
*val = (u_long)ivar->compatid;
break;
default:
return ENOENT;
}
return 0;
}
static int
atkbdc_write_ivar(device_t bus, device_t dev, int index, uintptr_t val)
{
atkbdc_device_t *ivar;
ivar = (atkbdc_device_t *)device_get_ivars(dev);
switch (index) {
case KBDC_IVAR_IRQ:
ivar->irq = (int)val;
break;
case KBDC_IVAR_FLAGS:
ivar->flags = (int)val;
break;
case KBDC_IVAR_VENDORID:
ivar->vendorid = (u_int32_t)val;
break;
case KBDC_IVAR_SERIAL:
ivar->serial = (u_int32_t)val;
break;
case KBDC_IVAR_LOGICALID:
ivar->logicalid = (u_int32_t)val;
break;
case KBDC_IVAR_COMPATID:
ivar->compatid = (u_int32_t)val;
break;
default:
return ENOENT;
}
return 0;
}
DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);