diff options
Diffstat (limited to 'sys/dev/usb/net/if_smsc.c')
| -rw-r--r-- | sys/dev/usb/net/if_smsc.c | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/sys/dev/usb/net/if_smsc.c b/sys/dev/usb/net/if_smsc.c index 2e2b4ef..5ce45bc 100644 --- a/sys/dev/usb/net/if_smsc.c +++ b/sys/dev/usb/net/if_smsc.c @@ -82,6 +82,14 @@ __FBSDID("$FreeBSD$"); #include <sys/priv.h> #include <sys/random.h> +#include "opt_platform.h" + +#ifdef FDT +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> +#endif + #include <dev/usb/usb.h> #include <dev/usb/usbdi.h> #include <dev/usb/usbdi_util.h> @@ -1516,6 +1524,64 @@ smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) return (rc); } +#ifdef FDT +/** + * Get MAC address from FDT blob. Firmware or loader should fill + * mac-address or local-mac-address property Returns 0 if MAC address + * obtained, error code otherwise + */ +static int +smsc_fdt_find_mac(unsigned char *mac) +{ + phandle_t child, parent, root; + int len; + + root = OF_finddevice("/"); + len = 0; + parent = root; + + /* Traverse through entire tree to find nodes usb ethernet nodes */ + for (child = OF_child(parent); child != 0; child = OF_peer(child)) { + + /* Find a 'leaf'. Start the search from this node. */ + while (OF_child(child)) { + parent = child; + child = OF_child(child); + } + + if (fdt_is_compatible(child, "net,ethernet") && + fdt_is_compatible(child, "usb,device")) { + + /* Check if there is property */ + if ((len = OF_getproplen(child, "local-mac-address")) > 0) { + if (len != ETHER_ADDR_LEN) + return (EINVAL); + + OF_getprop(child, "local-mac-address", mac, + ETHER_ADDR_LEN); + return (0); + } + + if ((len = OF_getproplen(child, "mac-address")) > 0) { + if (len != ETHER_ADDR_LEN) + return (EINVAL); + + OF_getprop(child, "mac-address", mac, + ETHER_ADDR_LEN); + return (0); + } + } + + if (OF_peer(child) == 0) { + /* No more siblings. */ + child = parent; + parent = OF_parent(child); + } + } + + return (ENXIO); +} +#endif /** * smsc_attach_post - Called after the driver attached to the USB interface @@ -1563,8 +1629,11 @@ smsc_attach_post(struct usb_ether *ue) if (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)) { err = smsc_eeprom_read(sc, 0x01, sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN); +#ifdef FDT + if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) + err = smsc_fdt_find_mac(sc->sc_ue.ue_eaddr); +#endif if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) { - read_random(sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN); sc->sc_ue.ue_eaddr[0] &= ~0x01; /* unicast */ sc->sc_ue.ue_eaddr[0] |= 0x02; /* locally administered */ |
