d4fcf3cba5
and amd64. The optimization is a trivial on recent machines. Reviewed by: -arch (imp, marcel, dfr)
184 lines
3.2 KiB
C
184 lines
3.2 KiB
C
/*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/cdio.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <sys/mutex.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <isa/isavar.h>
|
|
|
|
#include <dev/scd/scdreg.h>
|
|
#include <dev/scd/scdvar.h>
|
|
|
|
static int scd_isa_probe (device_t);
|
|
static int scd_isa_attach (device_t);
|
|
static int scd_isa_detach (device_t);
|
|
|
|
static int scd_alloc_resources (device_t);
|
|
static void scd_release_resources (device_t);
|
|
|
|
static int
|
|
scd_isa_probe (device_t dev)
|
|
{
|
|
struct scd_softc * sc;
|
|
int error;
|
|
|
|
/* No pnp support */
|
|
if (isa_get_vendorid(dev))
|
|
return (ENXIO);
|
|
|
|
/* IO port must be configured. */
|
|
if (bus_get_resource_start(dev, SYS_RES_IOPORT, 0) == 0)
|
|
return (ENXIO);
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->dev = dev;
|
|
sc->port_rid = 0;
|
|
sc->port_type = SYS_RES_IOPORT;
|
|
error = scd_alloc_resources(dev);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = scd_probe(sc);
|
|
if (error) {
|
|
device_printf(dev, "Probe failed.\n");
|
|
goto fail;
|
|
}
|
|
|
|
device_set_desc(dev, sc->data.name);
|
|
|
|
fail:
|
|
scd_release_resources(dev);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
scd_isa_attach (device_t dev)
|
|
{
|
|
struct scd_softc * sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
error = 0;
|
|
|
|
sc->dev = dev;
|
|
sc->port_rid = 0;
|
|
sc->port_type = SYS_RES_IOPORT;
|
|
error = scd_alloc_resources(dev);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = scd_probe(sc);
|
|
if (error) {
|
|
device_printf(dev, "Re-Probe failed.\n");
|
|
goto fail;
|
|
}
|
|
|
|
error = scd_attach(sc);
|
|
if (error) {
|
|
device_printf(dev, "Attach failed.\n");
|
|
goto fail;
|
|
}
|
|
|
|
return (0);
|
|
fail:
|
|
scd_release_resources(dev);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
scd_isa_detach (device_t dev)
|
|
{
|
|
struct scd_softc * sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
error = 0;
|
|
|
|
destroy_dev(sc->scd_dev_t);
|
|
|
|
scd_release_resources(dev);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
scd_alloc_resources (device_t dev)
|
|
{
|
|
struct scd_softc * sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
error = 0;
|
|
|
|
if (sc->port_type) {
|
|
sc->port = bus_alloc_resource_any(dev, sc->port_type,
|
|
&sc->port_rid, RF_ACTIVE);
|
|
if (sc->port == NULL) {
|
|
device_printf(dev, "Unable to allocate PORT resource.\n");
|
|
error = ENOMEM;
|
|
goto bad;
|
|
}
|
|
sc->port_bst = rman_get_bustag(sc->port);
|
|
sc->port_bsh = rman_get_bushandle(sc->port);
|
|
}
|
|
|
|
mtx_init(&sc->mtx, device_get_nameunit(dev),
|
|
"Interrupt lock", MTX_DEF | MTX_RECURSE);
|
|
|
|
bad:
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
scd_release_resources (device_t dev)
|
|
{
|
|
struct scd_softc * sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
if (sc->port) {
|
|
bus_release_resource(dev, sc->port_type, sc->port_rid, sc->port);
|
|
sc->port_bst = 0;
|
|
sc->port_bsh = 0;
|
|
}
|
|
|
|
if (mtx_initialized(&sc->mtx) != 0)
|
|
mtx_destroy(&sc->mtx);
|
|
|
|
return;
|
|
}
|
|
|
|
static device_method_t scd_isa_methods[] = {
|
|
DEVMETHOD(device_probe, scd_isa_probe),
|
|
DEVMETHOD(device_attach, scd_isa_attach),
|
|
DEVMETHOD(device_detach, scd_isa_detach),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t scd_isa_driver = {
|
|
"scd",
|
|
scd_isa_methods,
|
|
sizeof(struct scd_softc)
|
|
};
|
|
|
|
static devclass_t scd_devclass;
|
|
|
|
DRIVER_MODULE(scd, isa, scd_isa_driver, scd_devclass, NULL, 0);
|