satapmp_read
if (satapmp_read(chp, port, PMP_PSCR_SStatus, &sstatus,
if (satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_ID, &id, xfer) != 0 ||
satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_REV, &rev, xfer) != 0 ||
satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_INF, &inf, xfer) != 0) {