/**
* Write a 32-bit PCIe TLP/DLLP/PLP protocol register value.
*
* @param sc The bhndb_pci driver state.
* @param addr The protocol register offset.
* @param val The value to write to @p addr.
*/
static void
bhndb_pcie_write_proto_reg(struct bhndb_pci_softc *sc, uint32_t addr,
uint32_t val)
{
KASSERT(bhnd_get_class(sc->bhndb.hostb_dev) == BHND_DEVCLASS_PCIE,
("not a pcie device!"));
BHNDB_LOCK(&sc->bhndb);
BHNDB_PCI_WRITE_4(sc, BHND_PCIE_IND_ADDR, addr);
BHNDB_PCI_WRITE_4(sc, BHND_PCIE_IND_DATA, val);
BHNDB_UNLOCK(&sc->bhndb);
}
/**
* Read a 32-bit PCIe TLP/DLLP/PLP protocol register.
*
* @param sc The bhndb_pci driver state.
* @param addr The protocol register offset.
*/
static uint32_t
bhndb_pcie_read_proto_reg(struct bhndb_pci_softc *sc, uint32_t addr)
{
uint32_t val;
KASSERT(bhnd_get_class(sc->bhndb.hostb_dev) == BHND_DEVCLASS_PCIE,
("not a pcie device!"));
BHNDB_LOCK(&sc->bhndb);
BHNDB_PCI_WRITE_4(sc, BHND_PCIE_IND_ADDR, addr);
val = BHNDB_PCI_READ_4(sc, BHND_PCIE_IND_DATA);
BHNDB_UNLOCK(&sc->bhndb);
return (val);
}
/**
* Helper function for implementing BHND_BUS_GET_PROBE_ORDER().
*
* This implementation determines probe ordering based on the device's class
* and other properties, including whether the device is serving as a host
* bridge.
*/
int
bhnd_generic_get_probe_order(device_t dev, device_t child)
{
switch (bhnd_get_class(child)) {
case BHND_DEVCLASS_CC:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_FIRST);
case BHND_DEVCLASS_CC_B:
/* fall through */
case BHND_DEVCLASS_PMU:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_EARLY);
case BHND_DEVCLASS_SOC_ROUTER:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_LATE);
case BHND_DEVCLASS_SOC_BRIDGE:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_LAST);
case BHND_DEVCLASS_CPU:
return (BHND_PROBE_CPU + BHND_PROBE_ORDER_FIRST);
case BHND_DEVCLASS_RAM:
/* fall through */
case BHND_DEVCLASS_MEMC:
return (BHND_PROBE_CPU + BHND_PROBE_ORDER_EARLY);
case BHND_DEVCLASS_NVRAM:
return (BHND_PROBE_RESOURCE + BHND_PROBE_ORDER_EARLY);
case BHND_DEVCLASS_PCI:
case BHND_DEVCLASS_PCIE:
case BHND_DEVCLASS_PCCARD:
case BHND_DEVCLASS_ENET:
case BHND_DEVCLASS_ENET_MAC:
case BHND_DEVCLASS_ENET_PHY:
case BHND_DEVCLASS_WLAN:
case BHND_DEVCLASS_WLAN_MAC:
case BHND_DEVCLASS_WLAN_PHY:
case BHND_DEVCLASS_EROM:
case BHND_DEVCLASS_OTHER:
case BHND_DEVCLASS_INVALID:
if (bhnd_is_hostb_device(child))
return (BHND_PROBE_ROOT + BHND_PROBE_ORDER_EARLY);
return (BHND_PROBE_DEFAULT);
}
}
