static int
fdc_acpi_attach(device_t dev)
{
struct fdc_data *sc;
ACPI_BUFFER buf;
ACPI_OBJECT *obj;
device_t bus;
int error;
/* Get our softc and use the same accessor as ISA. */
sc = device_get_softc(dev);
sc->fdc_dev = dev;
/* Initialize variables and get a temporary buffer for _FDE. */
error = ENXIO;
buf.Length = ACPI_FDC_BUFLEN;
buf.Pointer = malloc(buf.Length, M_TEMP, M_NOWAIT | M_ZERO);
if (buf.Pointer == NULL)
goto out;
/* Allocate resources the same as the ISA attachment. */
error = fdc_isa_alloc_resources(dev, sc);
if (error != 0)
goto out;
/* Call common attach code in fdc(4) first. */
error = fdc_attach(dev);
if (error != 0)
goto out;
/*
* Enumerate _FDE, which lists floppy drives that are present. If
* this fails, fall back to the ISA hints-based probe method.
*/
bus = device_get_parent(dev);
if (ACPI_FAILURE(ACPI_EVALUATE_OBJECT(bus, dev, "_FDE", NULL, &buf))) {
error = fdc_hints_probe(dev);
goto out;
}
/* Add fd child devices as specified. */
obj = buf.Pointer;
error = fdc_acpi_probe_children(bus, dev, obj->Buffer.Pointer);
out:
if (buf.Pointer)
free(buf.Pointer, M_TEMP);
if (error != 0)
fdc_release_resources(sc);
return (error);
}
static int
fdc_isa_attach(device_t dev)
{
struct fdc_data *fdc;
int error;
fdc = device_get_softc(dev);
fdc->fdc_dev = dev;
error = fdc_isa_alloc_resources(dev, fdc);
if (error == 0)
error = fdc_attach(dev);
if (error == 0)
error = fdc_hints_probe(dev);
if (error)
fdc_release_resources(fdc);
return (error);
}
static int
fdc_isa_probe(device_t dev)
{
int error;
struct fdc_data *fdc;
fdc = device_get_softc(dev);
fdc->fdc_dev = dev;
/* Check pnp ids */
error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids);
if (error == ENXIO)
return (ENXIO);
/* Attempt to allocate our resources for the duration of the probe */
error = fdc_isa_alloc_resources(dev, fdc);
if (error == 0)
error = fdc_initial_reset(dev, fdc);
fdc_release_resources(fdc);
return (error);
}
