freebsd-dev/sys/isa/atkbdc_isa.c
Matthew N. Dodd fe0d408987 Remove the 'ivars' arguement to device_add_child() and
device_add_child_ordered().  'ivars' may now be set using the
device_set_ivars() function.

This makes it easier for us to change how arbitrary data structures are
associated with a device_t.  Eventually we won't be modifying device_t
to add additional pointers for ivars, softc data etc.

Despite my best efforts I've probably forgotten something so let me know
if this breaks anything.  I've been running with this change for months
and its been quite involved actually isolating all the changes from
the rest of the local changes in my tree.

Reviewed by:	peter, dfr
1999-12-03 08:41:24 +00:00

270 lines
6.9 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 "atkbdc.h"
#include "opt_kbd.h"
#if NATKBDC > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.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 port; /* port number (same as the controller's) */
int irq; /* ISA IRQ mask */
} 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,
u_long *val);
static int atkbdc_write_ivar(device_t bus, device_t dev, int index,
u_long 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 int
atkbdc_probe(device_t dev)
{
int error;
int rid;
struct resource *port;
/* Check isapnp ids */
if (isa_get_vendorid(dev))
return (ENXIO);
device_set_desc(dev, "keyboard controller (i8042)");
rid = 0;
port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, IO_KBDSIZE, RF_ACTIVE);
if (!port)
return ENXIO;
error = atkbdc_probe_unit(device_get_unit(dev), rman_get_start(port));
bus_release_resource(dev, SYS_RES_IOPORT, rid, port);
return error;
}
static void
atkbdc_add_device(device_t dev, const char *name, int unit)
{
atkbdc_softc_t *sc = *(atkbdc_softc_t **)device_get_softc(dev);
atkbdc_device_t *kdev;
device_t child;
int t;
kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT);
if (!kdev)
return;
bzero(kdev, sizeof *kdev);
kdev->port = sc->port;
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;
struct resource *port;
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;
}
/* XXX should track resource in softc */
rid = 0;
port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, IO_KBDSIZE, RF_ACTIVE);
if (!port)
return ENXIO;
error = atkbdc_attach_unit(unit, sc, rman_get_start(port));
if (error)
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", "atkbdc0");
i != -1;
i = resource_query_string(i, "at", "atkbdc0")) {
atkbdc_add_device(dev, resource_query_name(i),
resource_query_unit(i));
}
/*
* and atkbdc?
*/
for (i = resource_query_string(-1, "at", "atkbdc");
i != -1;
i = resource_query_string(i, "at", "atkbdc")) {
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, u_long *val)
{
atkbdc_device_t *ivar;
ivar = (atkbdc_device_t *)device_get_ivars(dev);
switch (index) {
case KBDC_IVAR_PORT:
*val = (u_long)ivar->port;
break;
case KBDC_IVAR_IRQ:
*val = (u_long)ivar->irq;
break;
case KBDC_IVAR_FLAGS:
*val = (u_long)ivar->flags;
break;
default:
return ENOENT;
}
return 0;
}
static int
atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
{
atkbdc_device_t *ivar;
ivar = (atkbdc_device_t *)device_get_ivars(dev);
switch (index) {
case KBDC_IVAR_PORT:
ivar->port = (int)val;
break;
case KBDC_IVAR_IRQ:
ivar->irq = (int)val;
break;
case KBDC_IVAR_FLAGS:
ivar->flags = (int)val;
break;
default:
return ENOENT;
}
return 0;
}
DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);
#endif /* NATKBDC > 0 */