diff options
| author | Niklas Cassel <niklas.cassel@wdc.com> | 2023-06-09 16:08:42 +0200 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2023-09-06 22:48:04 -0400 |
| commit | 1a16ce64fda11bdf50f0c4ab5d9fdde72c1383a2 (patch) | |
| tree | 0c436fdc8b66e309d4383fe01ef9a8a174233c66 /hw/ide | |
| parent | d73b84d0b664e60fffb66f46e84d0db4a8e1c713 (diff) | |
hw/ide/ahci: PxCI should not get cleared when ERR_STAT is set
For NCQ, PxCI is cleared on command queued successfully.
For non-NCQ, PxCI is cleared on command completed successfully.
Successfully means ERR_STAT, BUSY and DRQ are all cleared.
A command that has ERR_STAT set, does not get to clear PxCI.
See AHCI 1.3.1, section 5.3.8, states RegFIS:Entry and RegFIS:ClearCI,
and 5.3.16.5 ERR:FatalTaskfile.
In the case of non-NCQ commands, not clearing PxCI is needed in order
for host software to be able to see which command slot that failed.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Message-id: 20230609140844.202795-7-nks@flawful.org
Signed-off-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/ahci.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index a31e6fa65e..12aaadc554 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -1523,7 +1523,8 @@ static void ahci_clear_cmd_issue(AHCIDevice *ad, uint8_t slot) { IDEState *ide_state = &ad->port.ifs[0]; - if (!(ide_state->status & (BUSY_STAT | DRQ_STAT))) { + if (!(ide_state->status & ERR_STAT) && + !(ide_state->status & (BUSY_STAT | DRQ_STAT))) { ad->port_regs.cmd_issue &= ~(1 << slot); } } @@ -1532,6 +1533,7 @@ static void ahci_clear_cmd_issue(AHCIDevice *ad, uint8_t slot) static void ahci_cmd_done(const IDEDMA *dma) { AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + IDEState *ide_state = &ad->port.ifs[0]; trace_ahci_cmd_done(ad->hba, ad->port_no); @@ -1548,7 +1550,8 @@ static void ahci_cmd_done(const IDEDMA *dma) */ ahci_write_fis_d2h(ad, true); - if (ad->port_regs.cmd_issue && !ad->check_bh) { + if (!(ide_state->status & ERR_STAT) && + ad->port_regs.cmd_issue && !ad->check_bh) { ad->check_bh = qemu_bh_new_guarded(ahci_check_cmd_bh, ad, &ad->mem_reentrancy_guard); qemu_bh_schedule(ad->check_bh); |