static int
gscclose (dev_t dev, int flags, int fmt, struct proc *p)
{
int unit = UNIT(minor(dev));
struct gsc_unit *scu = unittab + unit;
lprintf(("gsc%d.close: minor %d\n",
unit, minor(dev)));
if ( unit >= NGSC || !( scu->flags & ATTACHED ) )
{
lprintf(("gsc%d.read: unit was not attached successfully 0x%04x\n",
unit, scu->flags));
return ENXIO;
}
outb(scu->ctrl, scu->ctrl_byte & ~GSC_POWER_ON);
scu->sbuf.size = INVALID;
scu->sbuf.poi = INVALID;
isa_dma_release(scu->channel);
scu->flags &= ~(FLAG_DEBUG | OPEN | READING);
return SUCCESS;
}
static int
dpt_isa_detach (device_t dev)
{
dpt_softc_t * dpt;
int dma;
int error;
dpt = device_get_softc(dev);
dma = rman_get_start(dpt->drq_res);
error = dpt_detach(dev);
isa_dma_release(dma);
return (error);
}
static int
dpt_isa_attach (device_t dev)
{
dpt_softc_t * dpt;
int error = 0;
dpt = device_get_softc(dev);
dpt->dev = dev;
dpt_alloc(dev);
dpt->io_rid = 0;
dpt->io_type = SYS_RES_IOPORT;
dpt->irq_rid = 0;
error = dpt_alloc_resources(dev);
if (error) {
goto bad;
}
dpt->drq_rid = 0;
dpt->drq_res = bus_alloc_resource_any(dev, SYS_RES_DRQ, &dpt->drq_rid,
RF_ACTIVE);
if (!dpt->drq_res) {
device_printf(dev, "No DRQ!\n");
error = ENOMEM;
goto bad;
}
isa_dma_acquire(rman_get_start(dpt->drq_res));
isa_dmacascade(rman_get_start(dpt->drq_res));
/* Allocate a dmatag representing the capabilities of this attachment */
if (bus_dma_tag_create( /* parent */ bus_get_dma_tag(dev),
/* alignemnt */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
/* nsegments */ ~0,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&dpt->parent_dmat) != 0) {
error = ENXIO;
goto bad;
}
if (dpt_init(dpt) != 0) {
error = ENXIO;
goto bad;
}
/* Register with the XPT */
dpt_attach(dpt);
if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY |
INTR_MPSAFE, NULL, dpt_intr, dpt, &dpt->ih)) {
device_printf(dev, "Unable to register interrupt handler\n");
error = ENXIO;
goto bad;
}
return (error);
bad:
if (dpt->drq_res) {
isa_dma_release(rman_get_start(dpt->drq_res));
}
dpt_release_resources(dev);
if (dpt)
dpt_free(dpt);
return (error);
}
