AHCI_PREG_SERR
s = ahci_pread(ap, AHCI_PREG_SERR);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
r = ahci_pread(ap, AHCI_PREG_SERR);
ahci_pwrite(ap, AHCI_PREG_SERR, AHCI_PREG_SERR_DIAG_X);
AHCI_PFMT_SERR, ahci_pread(ap, AHCI_PREG_SERR));
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR,
serr = ahci_pread(ap, AHCI_PREG_SERR);
ahci_pwrite(ap, AHCI_PREG_SERR, serr);
ahci_pwrite(ap, AHCI_PREG_SERR,
u_int32_t serr = ahci_pread(ap, AHCI_PREG_SERR);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
serr = ahci_pread(ap, AHCI_PREG_SERR);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR,
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);
ahci_pwrite(ap, AHCI_PREG_SERR, -1);