Mark Lord wrote:
> Tejun Heo wrote:
>> Mark Lord wrote:
>>> Tejun Heo wrote:
>>>> Mark Lord wrote:
>>>>> Tejun Heo wrote:
>>>>>> Mark Lord wrote:
>>>>>>> Tejun,
>>> ..
>>>>>> void ata_qc_issue(struct ata_queued_cmd *qc)
>>>>>> {
>>>>>> struct ata_port *ap = qc->ap;
>>>>>> struct ata_link *link = qc->dev->link;
>>>>>>
>>>>>> /* Make sure only one non-NCQ command is outstanding. The
>>>>>> * check is skipped for old EH because it reuses active qc to
>>>>>> * request ATAPI sense.
>>>>>> */
>>>>> = WARN_ON(ap->ops->error_handler &&
>>>> Hmm... Thanks. Do you have your ->qc_defer set?
>>> ..
>>>
>>> Err.. no, never heard of it before (now).
>>>
>>> I suppose I should have it set to the default ?
>>
>> Yeah, just set it to ata_std_qc_defer().
> ..
>
> Super. And when I add FIS-based-switching PMP support on top of NCQ,
> *then* what should it point at?
If the controller can do FIS-based switching w/o any other restrictions,
ata_std_qc_defer() can just stay. If there are restrictions, you need
to roll your own qc_defer. sata_sil24 had to.
For command-based switching, sata_pmp_qc_defer_cmd_switch() can be used.
--
tejun
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