linux-kernel - [PATCH v2 0/3] scsi: ufs: core: support WB buffer resize function

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Message-Id: <20230908102113.547-1-luhongfei@vivo.com>
Date:   Fri,  8 Sep 2023 18:20:15 +0800
From:   Lu Hongfei <luhongfei@...o.com>
To:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Bart Van Assche <bvanassche@....org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Lu Hongfei <luhongfei@...o.com>,
        Can Guo <quic_cang@...cinc.com>, Bean Huo <beanhuo@...ron.com>,
        Arthur Simchaev <arthur.simchaev@....com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Asutosh Das <quic_asutoshd@...cinc.com>,
        "Bao D. Nguyen" <quic_nguyenb@...cinc.com>,
        zhanghui <zhanghui31@...omi.com>,
        Po-Wen Kao <powen.kao@...iatek.com>,
        Eric Biggers <ebiggers@...gle.com>,
        Keoseong Park <keosung.park@...sung.com>,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Cc:     opensource.kernel@...o.com
Subject: [PATCH v2 0/3] scsi: ufs: core: support WB buffer resize function

Hello,

This v2 series implements the function of controlling the wb buffer resize
via sysfs that will be supported in UFS4.1.

The patch 1 add WB buffer resize related attr_idns.
The patch 2 Add ufshcd_wb_buf_resize function to enable WB buffer resize.
The patch 3 Add sysfs attributes to control WB buffer resize function.

version 2 changes
-Using sysfs to control WB buffer resize instead of exception event handler
-Removed content related to exception event
-Solved several issues that caused compilation errors

Of course, there may be better ways to implement this feature.
If necessary, please point it out and I will optimize it as soon as
possible.

As of now, there have been no UFS device releases that support this
feature, so I have not tested the code on real hardware.

------------------------------------------------------------------------

Lu Hongfei (3):
  scsi: ufs: core: add wb buffer resize related attr_idn
  scsi: ufs: core: Add ufshcd_wb_buf_resize function to enable WB buffer
    resize
  scsi: ufs: core: Add sysfs attributes to control WB buffer resize
    function

 Documentation/ABI/testing/sysfs-driver-ufs | 52 ++++++++++++++++
 drivers/ufs/core/ufs-sysfs.c               | 71 ++++++++++++++++++++++
 drivers/ufs/core/ufshcd-priv.h             |  1 +
 drivers/ufs/core/ufshcd.c                  | 21 +++++++
 include/ufs/ufs.h                          |  5 +-
 include/ufs/ufshcd.h                       |  1 +
 6 files changed, 150 insertions(+), 1 deletion(-)

-- 
2.39.0