On 22/03/2022 11:20, Christoph Hellwig wrote:
On Tue, Mar 22, 2022 at 06:39:37PM +0800, John Garry wrote:
When SCSI HBA device drivers are required to process an ATA internal
command they still need a tag for the IO. This often requires the driver
to set aside a set of tags for these sorts of IOs and manage the tags
themselves.
If we associate a SCSI command (and request) with an ATA internal command
then the tag is already provided, so introduce the change to send ATA
internal commands through the block layer with a set of custom blk-mq ops.
note: I think that the timeout handling needs to be fixed up.
Any reason to not just send them through an ATA_16 passthrough CDB and
just use all the normal SCSI command handling?
.
No reason that I know about.
TBH, I was hoping that someone woud have a better idea on how to do this
as what I was doing was messy.
Let me check it.
Cheers,
John
