mpi_cfg_raid_physdisk
struct mpi_cfg_raid_physdisk *physdisk_list, *physdisk;
physdisk_list = (struct mpi_cfg_raid_physdisk *)(physdisk_pg + 1);
struct mpi_cfg_raid_physdisk *physdisk, int period, int offset, int try)
struct mpi_cfg_raid_physdisk *, int, int, int);