static int
gscopen (dev_t dev, int flags, int fmt, struct proc *p)
{
struct gsc_unit *scu;
int unit;
unit = UNIT(minor(dev)) & UNIT_MASK;
if ( unit >= NGSC )
{
#ifdef GSCDEBUG
/* XXX lprintf isn't valid here since there is no scu. */
printf("gsc%d.open: unconfigured unit number (max %d)\n", unit, NGSC);
#endif
return ENXIO;
}
scu = unittab + unit;
if ( !( scu->flags & ATTACHED ) )
{
lprintf(("gsc%d.open: unit was not attached successfully 0x%04x\n",
unit, scu->flags));
return ENXIO;
}
if ( minor(dev) & DBUG_MASK )
scu->flags |= FLAG_DEBUG;
else
scu->flags &= ~FLAG_DEBUG;
switch(minor(dev) & FRMT_MASK) {
case FRMT_PBM:
scu->flags |= PBM_MODE;
lprintf(("gsc%d.open: pbm mode\n", unit));
break;
case FRMT_RAW:
lprintf(("gsc%d.open: raw mode\n", unit));
scu->flags &= ~PBM_MODE;
break;
default:
lprintf(("gsc%d.open: gray maps are not yet supported", unit));
return ENXIO;
}
lprintf(("gsc%d.open: minor %d\n",
unit, minor(dev)));
if ( scu->flags & OPEN )
{
lprintf(("gsc%d.open: already open", unit));
return EBUSY;
}
if (isa_dma_acquire(scu->channel))
return(EBUSY);
scu->flags |= OPEN;
return SUCCESS;
}
int
ppc_isa_attach(device_t dev)
{
struct ppc_data *ppc = device_get_softc(dev);
if ((ppc->ppc_avm & PPB_ECP) && (ppc->ppc_dmachan > 0)) {
/* acquire the DMA channel forever */ /* XXX */
isa_dma_acquire(ppc->ppc_dmachan);
isa_dmainit(ppc->ppc_dmachan, 1024); /* nlpt.BUFSIZE */
ppc->ppc_dmadone = ppc_isa_dmadone;
}
return (ppc_attach(dev));
}
int
ppc_attach(device_t dev)
{
struct ppc_data *ppc = DEVTOSOFTC(dev);
device_t ppbus;
device_t parent = device_get_parent(dev);
device_printf(dev, "%s chipset (%s) in %s mode%s\n",
ppc_models[ppc->ppc_model], ppc_avms[ppc->ppc_avm],
ppc_modes[ppc->ppc_mode], (PPB_IS_EPP(ppc->ppc_mode)) ?
ppc_epp_protocol[ppc->ppc_epp] : "");
if (ppc->ppc_fifo)
device_printf(dev, "FIFO with %d/%d/%d bytes threshold\n",
ppc->ppc_fifo, ppc->ppc_wthr, ppc->ppc_rthr);
if ((ppc->ppc_avm & PPB_ECP) && (ppc->ppc_dmachan > 0)) {
/* acquire the DMA channel forever */ /* XXX */
isa_dma_acquire(ppc->ppc_dmachan);
isa_dmainit(ppc->ppc_dmachan, 1024); /* nlpt.BUFSIZE */
}
/* add ppbus as a child of this isa to parallel bridge */
ppbus = device_add_child(dev, "ppbus", -1);
/*
* Probe the ppbus and attach devices found.
*/
device_probe_and_attach(ppbus);
/* register the ppc interrupt handler as default */
if (ppc->res_irq) {
/* default to the tty mask for registration */ /* XXX */
if (BUS_SETUP_INTR(parent, dev, ppc->res_irq, INTR_TYPE_TTY,
ppcintr, dev, &ppc->intr_cookie) == 0) {
/* remember the ppcintr is registered */
ppc->ppc_registered = 1;
}
}
return (0);
}
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);
}