MISDN_BCH_FILL_SIZE
outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE);
count -= MISDN_BCH_FILL_SIZE;
memset(bch->fill, cq->p2 & 0xff, MISDN_BCH_FILL_SIZE);
u8 fill[MISDN_BCH_FILL_SIZE];