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Add a default driver to attach to the "hidden" scsi channels of the Dell

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PERC 3 controllers.  This is needed to keep the PM code from powering them
down.
This commit is contained in:
scottl 2005-01-07 05:59:45 +00:00
parent 403229a01e
commit 061dd4dce8
1 changed files with 62 additions and 0 deletions
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62
sys/dev/aac/aac_pci.c
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@ -322,3 +322,65 @@ aac_pci_attach(device_t dev)
aac_free(sc); aac_free(sc);
return(error); return(error);
} }
/*
* Do nothing driver that will attach to the SCSI channels of a Dell PERC
* controller. This is needed to keep the power management subsystem from
* trying to power down these devices.
*/
static int aacch_probe(device_t dev);
static int aacch_attach(device_t dev);
static int aacch_detach(device_t dev);
static device_method_t aacch_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, aacch_probe),
DEVMETHOD(device_attach, aacch_attach),
DEVMETHOD(device_detach, aacch_detach),
{ 0, 0 }
};
struct aacch_softc {
device_t dev;
};
static driver_t aacch_driver = {
"aacch",
aacch_methods,
sizeof(struct aacch_softc)
};
static devclass_t aacch_devclass;
DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, 0, 0);
static int
aacch_probe(device_t dev)
{
if ((pci_get_subvendor(dev) != 0x9005) ||
(pci_get_subdevice(dev) != 0x00c5))
return (ENXIO);
device_set_desc(dev, "AAC RAID Channel");
return (-10);
}
static int
aacch_attach(device_t dev)
{
struct aacch_softc *sc;
sc = device_get_softc(dev);
sc->dev = dev;
return (0);
}
static int
aacch_detach(device_t dev)
{
return (0);
}