linux-kernel - RE: Re: [PATCH v26 4/4] scsi: ufs: Add HPB 2.0 support

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Date:   Fri, 05 Mar 2021 09:33:02 +0900
From:   Daejun Park <daejun7.park@...sung.com>
To:     Can Guo <cang@...eaurora.org>,
        Daejun Park <daejun7.park@...sung.com>
CC:     Greg KH <gregkh@...uxfoundation.org>,
        "avri.altman@....com" <avri.altman@....com>,
        "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>,
        "bvanassche@....org" <bvanassche@....org>,
        "huobean@...il.com" <huobean@...il.com>,
        ALIM AKHTAR <alim.akhtar@...sung.com>,
        "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>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        BoRam Shin <boram.shin@...sung.com>
Subject: RE: Re: [PATCH v26 4/4] scsi: ufs: Add HPB 2.0 support

Hi, Can Guo

> > diff --git a/drivers/scsi/ufs/ufs-sysfs.c 
> > b/drivers/scsi/ufs/ufs-sysfs.c
> > index 2546e7a1ac4f..00fb519406cf 100644
> > --- a/drivers/scsi/ufs/ufs-sysfs.c
> > +++ b/drivers/scsi/ufs/ufs-sysfs.c
> > @@ -841,6 +841,7 @@ out:                                                                        \
> >  static DEVICE_ATTR_RO(_name)
> > 
> >  UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
> > +UFS_ATTRIBUTE(max_data_size_hpb_single_cmd, _MAX_HPB_SINGLE_CMD);
> >  UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
> >  UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
> >  UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
> > @@ -864,6 +865,7 @@ UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
> > 
> >  static struct attribute *ufs_sysfs_attributes[] = {
> >          &dev_attr_boot_lun_enabled.attr,
> > +        &dev_attr_max_data_size_hpb_single_cmd.attr,
> >          &dev_attr_current_power_mode.attr,
> >          &dev_attr_active_icc_level.attr,
> >          &dev_attr_ooo_data_enabled.attr,
> > diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
> > index 957763db1006..e0b748777a1b 100644
> > --- a/drivers/scsi/ufs/ufs.h
> > +++ b/drivers/scsi/ufs/ufs.h
> > @@ -123,12 +123,13 @@ enum flag_idn {
> >          QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN                 = 0x0F,
> >          QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8     = 0x10,
> >          QUERY_FLAG_IDN_HPB_RESET                        = 0x11,
> > +        QUERY_FLAG_IDN_HPB_EN                                = 0x12,
>  
> Also add this flag to sysfs?

Sure, I will do.

Thanks,
Daejun