pdc_iodc_read
struct pdc_iodc_read pdc_iodc_read PDC_ALIGNMENT;
PDC_IODC_READ, &pdc_iodc_read, nca.ca_hpa, IODC_DATA,
nca.ca_pdc_iodc_read = &pdc_iodc_read;
struct pdc_iodc_read *ca_pdc_iodc_read;