static void
aps_identify(driver_t *driver, struct device *parent)
{
struct device *child;
child = device_find_child(parent, driver->name, -1);
if (child != NULL) {
if (isa_get_portsize(child) == 0) {
// aps(4) must have been compiled into the kernel
if (bootverbose)
kprintf("%s: will specify the port\n",
__func__);
} else if (isa_get_port(child) != APS_ADDR_BASE)
kprintf("%s: will overwrite specified port\n",
__func__);
else {
if (isa_get_portsize(child) == APS_ADDR_SIZE) {
// aps.ko must have been reloaded
kprintf("%s: already have been invoked\n",
__func__);
return;
} else
kprintf("%s: will amend the portsize\n",
__func__);
}
} else {
// first invocation of `kldload aps.ko`
kprintf("%s: creating a new %s\n",
__func__, driver->name);
child = BUS_ADD_CHILD(parent, parent, ISA_ORDER_PNP,
driver->name, -1);
if (child == NULL) {
kprintf("%s: cannot add child\n", __func__);
return;
}
}
if (bus_set_resource(child, SYS_RES_IOPORT, 0,
APS_ADDR_BASE, APS_ADDR_SIZE, -1))
kprintf("%s: cannot set resource\n", __func__);
}
static int
snc_isa_probe(device_t dev)
{
struct snc_softc *sc = device_get_softc(dev);
int type;
int error = 0;
bzero(sc, sizeof(struct snc_softc));
/* Check isapnp ids */
error = ISA_PNP_PROBE(device_get_parent(dev), dev, snc_ids);
/* If the card had a PnP ID that didn't match any we know about */
if (error == ENXIO) {
return(error);
}
switch (error) {
case 0: /* Matched PnP */
type = SNEC_TYPE_PNP;
break;
case ENOENT: /* Legacy ISA */
type = SNEC_TYPE_LEGACY;
break;
default: /* If we had some other problem. */
return(error);
}
if (type == SNEC_TYPE_PNP && isa_get_portsize(dev) == 0) {
int port;
int rid = 0;
struct resource *res = NULL;
for (port = 0x0888; port <= 0x3888; port += 0x1000) {
bus_set_resource(dev, SYS_RES_IOPORT, rid,
port, SNEC_NREGS);
res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0ul, ~0ul, SNEC_NREGS,
0 /* !RF_ACTIVE */);
if (res) break;
}
printf("snc_isa_probe: broken PnP resource, ");
if (res) {
printf("use port 0x%x\n", port);
bus_release_resource(dev, SYS_RES_IOPORT, rid, res);
snc_isapnp_reconfig(dev);
} else {
printf("and can't find port\n");
}
}
error = snc_alloc_port(dev, 0);
error = max(error, snc_alloc_memory(dev, 0));
error = max(error, snc_alloc_irq(dev, 0, 0));
if (!error && !snc_probe(dev, type))
error = ENOENT;
snc_release_resources(dev);
return (error);
}