static int
t4iov_detach(device_t dev)
{
struct t4iov_softc *sc;
int error;
sc = device_get_softc(dev);
if (sc->sc_attached) {
error = t4iov_detach_child(dev);
if (error)
return (error);
}
device_verbose(dev);
return (0);
}
static int
agp_nvidia_probe (device_t dev)
{
const char *desc;
if (resource_disabled("agp", device_get_unit(dev)))
return (ENXIO);
desc = agp_nvidia_match(dev);
if (desc) {
device_verbose(dev);
device_set_desc(dev, desc);
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
atkbdc_isa_probe(device_t dev)
{
struct resource *port0;
struct resource *port1;
u_long start;
u_long count;
int error;
int rid;
#if defined(__i386__) || defined(__amd64__)
bus_space_tag_t tag;
bus_space_handle_t ioh1;
volatile int i;
register_t flags;
#endif
/* check PnP IDs */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
return ENXIO;
device_set_desc(dev, "Keyboard controller (i8042)");
/*
* Adjust I/O port resources.
* The AT keyboard controller uses two ports (a command/data port
* 0x60 and a status port 0x64), which may be given to us in
* one resource (0x60 through 0x64) or as two separate resources
* (0x60 and 0x64). Some brain-damaged ACPI BIOS has reversed
* command/data port and status port. Furthermore, /boot/device.hints
* may contain just one port, 0x60. We shall adjust resource settings
* so that these two ports are available as two separate resources
* in correct order.
*/
device_quiet(dev);
rid = 0;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
return ENXIO;
if (start == IO_KBD + KBD_STATUS_PORT) {
start = IO_KBD;
count++;
}
if (count > 1) /* adjust the count and/or start port */
bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (port0 == NULL)
return ENXIO;
rid = 1;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
bus_set_resource(dev, SYS_RES_IOPORT, 1,
start + KBD_STATUS_PORT, 1);
port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (port1 == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
return ENXIO;
}
#if defined(__i386__) || defined(__amd64__)
/*
* Check if we really have AT keyboard controller. Poll status
* register until we get "all clear" indication. If no such
* indication comes, it probably means that there is no AT
* keyboard controller present. Give up in such case. Check relies
* on the fact that reading from non-existing in/out port returns
* 0xff on i386. May or may not be true on other platforms.
*/
tag = rman_get_bustag(port0);
ioh1 = rman_get_bushandle(port1);
flags = intr_disable();
for (i = 0; i != 65535; i++) {
if ((bus_space_read_1(tag, ioh1, 0) & 0x2) == 0)
break;
}
intr_restore(flags);
if (i == 65535) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
if (bootverbose)
device_printf(dev, "AT keyboard controller not found\n");
return ENXIO;
}
#endif
device_verbose(dev);
error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
return error;
}
