WRITE_CMD(sc, CMD_TXRESET);
1
WRITE_CMD(sc, CMD_RXRESET);
2
1
Calls the
WRITE_CMD
macro to write data to the command port
register. The data to be written is the transmit (TX) reset command
(
CMD_TXRESET
).
2
Calls the
WRITE_CMD
macro to write data to the command port register.
In this call, the data to be written is the receive (RX) reset command
(
CMD_RXRESET
).
8.2.9 Setting the LAN Address
The following code shows how the
el_init_locked( )
routine sets the
LAN address. This task is specific to the 3Com 3C5x9 device. You may want
to perform similar initialization tasks for the hardware device that your
network driver controls.
WRITE_CMD(sc, CMD_WINDOW2);
1
i = (sc->is_addr[1] << 8) + sc->is_addr[0];
WRITE_AD1(sc, i);
i = (sc->is_addr[3] << 8) + sc->is_addr[2];
WRITE_AD2(sc, i);
i = (sc->is_addr[5] << 8) + sc->is_addr[4];
WRITE_AD3(sc, i);
lan_set_attribute(sc->ehm.current_val, NET_MAC_NDX,
ether_sprintf(sc->is_addr));
2
1
Performs several write operations to set the LAN address.
2
Sets the LAN MAC address attribute for EHM support.
8.2.10 Processing Special Flags
The following code shows how the
el_init_locked( )
routine processes
special flags. This task is specific to the 3Com 3C5x9 device. Make sure
that you perform similar initialization tasks for the hardware device that
your network driver controls.
if (ifp->if_flags & IFF_LOOPBACK) {
1
WRITE_CMD(sc, CMD_WINDOW4);
i = READ_ND(sc);
WRITE_ND(sc, ND_LOOP | i);
lan_set_attribute(sc->ehm.current_val, NET_LOOP_NDX, (void *)1);
2
}
else {
lan_set_attribute(sc->ehm.current_val, NET_LOOP_NDX, (void *)0);
}
i = RF_IND | RF_BRD;
3
if ((ifp->if_flags & IFF_ALLMULTI) || (sc->is_multi.lan_nmulti)) {
4
i |= RF_GRP;
}
if (ifp->if_flags & IFF_PROMISC) {
5
i |= RF_PRM;
lan_set_attribute(sc->ehm.current_val, NET_PROMISC_NDX, (void *)1);
6
}
8–8 Implementing the Initialization Section
