E1000_CONNSW
reg = rd32(E1000_CONNSW);
wr32(E1000_CONNSW, reg);
reg = rd32(E1000_CONNSW);
wr32(E1000_CONNSW, reg);
regs_buff[5] = rd32(E1000_CONNSW);
connsw = rd32(E1000_CONNSW);
wr32(E1000_CONNSW, connsw);
wr32(E1000_CONNSW, connsw);
u32 connsw = rd32(E1000_CONNSW);
wr32(E1000_CONNSW, connsw);
connsw = rd32(E1000_CONNSW);