diff options
| author | John Snow <jsnow@redhat.com> | 2015-07-04 02:06:03 -0400 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2015-07-04 02:06:03 -0400 |
| commit | 5d5f89212f19e3d7d3da1328137ca9e33eead7bf (patch) | |
| tree | 813c350f6f14155245157ca69efb3785bf94819d /hw | |
| parent | d56f4d6965ebcf8f3c496845c286e3a66496fdff (diff) | |
ahci: add ncq debug checks
Most of the time, these bits can be safely ignored. For the purposes
of debugging however, it's nice to know that they're not being used.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435016308-6150-7-git-send-email-jsnow@redhat.com
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/ide/ahci.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 4d0615b82b..b78017a9dd 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -1003,6 +1003,25 @@ static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, (uint64_t)ncq_fis->lba0; ncq_tfs->tag = tag; + /* Sanity-check the NCQ packet */ + if (tag != slot) { + DPRINTF(port, "Warn: NCQ slot (%d) did not match the given tag (%d)\n", + slot, tag); + } + + if (ncq_fis->aux0 || ncq_fis->aux1 || ncq_fis->aux2 || ncq_fis->aux3) { + DPRINTF(port, "Warn: Attempt to use NCQ auxiliary fields.\n"); + } + if (ncq_fis->prio || ncq_fis->icc) { + DPRINTF(port, "Warn: Unsupported attempt to use PRIO/ICC fields\n"); + } + if (ncq_fis->fua & NCQ_FIS_FUA_MASK) { + DPRINTF(port, "Warn: Unsupported attempt to use Force Unit Access\n"); + } + if (ncq_fis->tag & NCQ_FIS_RARC_MASK) { + DPRINTF(port, "Warn: Unsupported attempt to use Rebuild Assist\n"); + } + ncq_tfs->sector_count = ((uint16_t)ncq_fis->sector_count_high << 8) | ncq_fis->sector_count_low; ahci_populate_sglist(ad, &ncq_tfs->sglist, 0); @@ -1016,6 +1035,10 @@ static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, ncq_err(ncq_tfs); ahci_trigger_irq(ad->hba, ad, PORT_IRQ_OVERFLOW); return; + } else if (ncq_tfs->sglist.size != size) { + DPRINTF(port, "Warn: PRDTL (0x%zx)" + " does not match requested size (0x%zx)", + ncq_tfs->sglist.size, size); } DPRINTF(port, "NCQ transfer LBA from %"PRId64" to %"PRId64", " |