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ahci: add ncq debug checks

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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
This commit is contained in:
John Snow 2015-07-04 02:06:03 -04:00
parent d56f4d6965
commit 5d5f89212f
1 changed files with 23 additions and 0 deletions
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23
hw/ide/ahci.c
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@ -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", "