SIBA_CFG_SIZE
r_count = SIBA_CFG_SIZE;
.cb_size = SIBA_CFG_SIZE,
cfg_size = SIBA_CFG_SIZE;
bus_reserved = core_id->num_cfg_blocks * SIBA_CFG_SIZE;
KASSERT(reg <= SIBA_CFG_SIZE-4, ("%s invalid CFG0 register offset %#jx",
#define SIBA_CFG_OFFSET(_n) (SIBA_CFG0_OFFSET - ((_n) * SIBA_CFG_SIZE))