sf1_read
(ret = sf1_read(adapter, 1, 0, &status)) != 0)
(ret = sf1_read(adapter, 1, 1, data)) != 0)
ret = sf1_read(adapter, 4, nwords > 1, data);
ret = sf1_read(adapter, 3, 0, 1, &flashid);
(ret = sf1_read(adapter, 1, 0, 1, &status)) != 0)
(ret = sf1_read(adapter, 1, 1, 0, data)) != 0)
ret = sf1_read(adapter, 4, nwords > 1, nwords == 1, data);