linux-kernel - RE: [PATCH v24 4/4] scsi: ufs: Add HPB 2.0 support

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Date:   Wed, 24 Feb 2021 10:24:07 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     "daejun7.park@...sung.com" <daejun7.park@...sung.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "bvanassche@....org" <bvanassche@....org>,
        "huobean@...il.com" <huobean@...il.com>,
        ALIM AKHTAR <alim.akhtar@...sung.com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        JinHwan Park <jh.i.park@...sung.com>,
        Javier Gonzalez <javier.gonz@...sung.com>,
        SEUNGUK SHIN <seunguk.shin@...sung.com>,
        Sung-Jun Park <sungjun07.park@...sung.com>,
        yongmyung lee <ymhungry.lee@...sung.com>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        BoRam Shin <boram.shin@...sung.com>
Subject: RE: [PATCH v24 4/4] scsi: ufs: Add HPB 2.0 support


> +static int ufshpb_issue_umap_all_req(struct ufshpb_lu *hpb)
Maybe ufshpb_issue_umap_all_req is just a wrapper for ufshpb_issue_umap_req?
e.g it calls ufshpb_issue_umap_req(hpb, int read_buferr_id = 0x3) ?
Then on host mode inactivation:
static int ufshpb_issue_umap_single_req(struct ufshpb_lu *hpb)
{
	return ufshpb_issue_umap_req(hpb, 0x1);
}

> @@ -1691,6 +2180,7 @@ static void ufshpb_hpb_lu_prepared(struct ufs_hba
> *hba)
>                         ufshpb_set_state(hpb, HPB_PRESENT);
>                         if ((hpb->lu_pinned_end - hpb->lu_pinned_start) > 0)
>                                 queue_work(ufshpb_wq, &hpb->map_work);
> +                       ufshpb_issue_umap_all_req(hpb);
If (!is_legacy)