On Wed, Aug 31, 2022 at 9:48 AM Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx> wrote: > On 8/31/22 16:15, Hannes Reinecke wrote: > > Oh, of course :-) > > That was when doing SMR support for libata. > > I dimly remember that some pre-spec drives had been using the DRDY bit > > to signal an unaligned write. Which never made it into the spec, but the > > decoding stayed. > > Any idea where the other bits come from ? Except for bit 5 (device fault), > I do not see anything else in the specs that mandate these definitions... I have since discovered the "SCSI to ATA" specification which has two tables about mapping ATA errors to SCSI errors. Among those I was able to find an "unaligned write" case as well, but I cannot properly parse the rest of the two tables yet. They are in sections 11.6 and 11.7 of that document. > > Will be sending a patch. > Thanks ! I concur: Thanks! Cheers, Peter
