Symbol: PCS_SOCKET_IO
usr/src/uts/common/io/pcic.c
1790
pcic->pc_sockets[i].pcs_flags |= PCS_SOCKET_IO;
usr/src/uts/common/io/pcic.c
4210
socket->SocketCaps = (value & PCS_SOCKET_IO) ? IF_IO : IF_MEMORY;