Re: [PATCH 1/2] scsi: ufs: Add Multi-Circular Queue support

[Can Guo]

Hi Avri,

On 7/24/2022 12:07 PM, Avri Altman wrote:
> > @@ -2558,7 +2587,8 @@ void ufshcd_prepare_utp_scsi_cmd_upiu(struct
> > ufshcd_lrb *lrbp, u8 upiu_flags)
> >                                  UPIU_TRANSACTION_COMMAND, upiu_flags,
> >                                  lrbp->lun, lrbp->task_tag);
> >          ucd_req_ptr->header.dword_1 = UPIU_HEADER_DWORD(
> > -                               UPIU_COMMAND_SET_TYPE_SCSI, 0, 0, 0);
> > +                               UPIU_COMMAND_SET_TYPE_SCSI |
> > +                               (lrbp->hw_queue_id << 4), 0, 0, 0);
> This is fine, as long as we have 16 queues or less.
> Otherwise, we need to fill the EXT_IID as well (only if bEXTIIDEn = 1).
>
> Also, don't we need to do this for query commands as well?
> Or at least add a comment that the queue id for query command is 0.

As per UFS4.0 JEDEC draft, EXT_IID or IID is not required in QUERY 
REQUEST/RESPONSE UPIU,

unless my doc is out dated, please let me know.


Thanks,

Can Guo.

> Thanks,
> Avri