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[v8,0/8] scsi: ufs: support LU Dedicated buffer mode for WriteBooster

Message ID 20200508080115.24233-1-stanley.chu@mediatek.com (mailing list archive)
Headers show
Series scsi: ufs: support LU Dedicated buffer mode for WriteBooster | expand

Message

Stanley Chu May 8, 2020, 8:01 a.m. UTC
Hi,
This patchset adds LU dedicated buffer mode support for WriteBooster.
In the meanwhile, enable WriteBooster capability on MediaTek UFS platforms.

v7 -> v8:
  - In exported funtion ufshcd_fixup_dev_quirks(), add null checking for parameter "fixups" (Avri Altman)

v6 -> v7:
  - Add device descriptor length check in ufshcd_wb_probe() back to prevent out-of-boundary access in ufshcd_wb_probe()
  - Fix the check of device descriptor length (Avri Altman)
  - Provide a new ufs_fixup_device_setup() function to pack both device fixup methods by general quirk table and vendor-specific way (Avri Altman)

v5 -> v6:
  - Remove device descriptor length check in ufshcd_wb_probe()

v4 -> v5:
  - Check LUN ID for available WriteBooster buffer only from 0 to 7 according to spec (Avri Altman)
  - Skip checking any possible errors from ufshcd_read_unit_desc_param(hba, lun, UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS) in ufshcd_wb_probe() and check returned d_lu_wb_buf_alloc (shall be zero if error happens) (Avri Altman)

v3 -> v4:
  - Introduce "fixup_dev_quirks" vops to allow vendors to fix and modify device quirks, and provide an initial vendor-specific device quirk table on MediaTek UFS platforms
  - Avoid relying on common device quirk table for pre-3.1 UFS device with non-standard WriteBooster support (Can Guo)
  - Fix comments for ufshcd_wb_probe() (Can Guo)
  - Make ufshcd_wb_get_flag_index() inline and fix ufshcd_is_wb_flags() (Avri Altman)

v2 -> v3:
  - Introduce a device quirk to support WriteBooster in pre-3.1 UFS devices (Avri Altman)
  - Fix WriteBooster related sysfs nodes. Now all WriteBooster related sysfs nodes are specifically mapped to the LUN with WriteBooster enabled in LU Dedicated buffer mode (Avri Altman)

v1 -> v2:
  - Change the definition name of WriteBooster buffer mode to correspond to specification (Bean Huo)
  - Add patch #5: "scsi: ufs: cleanup WriteBooster feature"

Stanley Chu (8):
  scsi: ufs: enable WriteBooster on some pre-3.1 UFS devices
  scsi: ufs: introduce fixup_dev_quirks vops
  scsi: ufs: export ufs_fixup_device_setup() function
  scsi: ufs-mediatek: add fixup_dev_quirks vops
  scsi: ufs: add "index" in parameter list of ufshcd_query_flag()
  scsi: ufs: add LU Dedicated buffer mode support for WriteBooster
  scsi: ufs-mediatek: enable WriteBooster capability
  scsi: ufs: cleanup WriteBooster feature

 drivers/scsi/ufs/ufs-mediatek.c |  25 ++++-
 drivers/scsi/ufs/ufs-sysfs.c    |  11 ++-
 drivers/scsi/ufs/ufs.h          |  10 ++
 drivers/scsi/ufs/ufs_quirks.h   |   7 ++
 drivers/scsi/ufs/ufshcd.c       | 166 +++++++++++++++++++++-----------
 drivers/scsi/ufs/ufshcd.h       |  19 +++-
 6 files changed, 176 insertions(+), 62 deletions(-)

Comments

Avri Altman May 8, 2020, 8:40 a.m. UTC | #1
This series looks good to me.
Thanks,
Avri

> 
> 
> Hi,
> This patchset adds LU dedicated buffer mode support for WriteBooster.
> In the meanwhile, enable WriteBooster capability on MediaTek UFS
> platforms.
> 
> v7 -> v8:
>   - In exported funtion ufshcd_fixup_dev_quirks(), add null checking for
> parameter "fixups" (Avri Altman)
> 
> v6 -> v7:
>   - Add device descriptor length check in ufshcd_wb_probe() back to prevent
> out-of-boundary access in ufshcd_wb_probe()
>   - Fix the check of device descriptor length (Avri Altman)
>   - Provide a new ufs_fixup_device_setup() function to pack both device fixup
> methods by general quirk table and vendor-specific way (Avri Altman)
> 
> v5 -> v6:
>   - Remove device descriptor length check in ufshcd_wb_probe()
> 
> v4 -> v5:
>   - Check LUN ID for available WriteBooster buffer only from 0 to 7 according
> to spec (Avri Altman)
>   - Skip checking any possible errors from ufshcd_read_unit_desc_param(hba,
> lun, UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS) in ufshcd_wb_probe() and
> check returned d_lu_wb_buf_alloc (shall be zero if error happens) (Avri
> Altman)
> 
> v3 -> v4:
>   - Introduce "fixup_dev_quirks" vops to allow vendors to fix and modify
> device quirks, and provide an initial vendor-specific device quirk table on
> MediaTek UFS platforms
>   - Avoid relying on common device quirk table for pre-3.1 UFS device with
> non-standard WriteBooster support (Can Guo)
>   - Fix comments for ufshcd_wb_probe() (Can Guo)
>   - Make ufshcd_wb_get_flag_index() inline and fix ufshcd_is_wb_flags() (Avri
> Altman)
> 
> v2 -> v3:
>   - Introduce a device quirk to support WriteBooster in pre-3.1 UFS devices
> (Avri Altman)
>   - Fix WriteBooster related sysfs nodes. Now all WriteBooster related sysfs
> nodes are specifically mapped to the LUN with WriteBooster enabled in LU
> Dedicated buffer mode (Avri Altman)
> 
> v1 -> v2:
>   - Change the definition name of WriteBooster buffer mode to correspond
> to specification (Bean Huo)
>   - Add patch #5: "scsi: ufs: cleanup WriteBooster feature"
> 
> Stanley Chu (8):
>   scsi: ufs: enable WriteBooster on some pre-3.1 UFS devices
>   scsi: ufs: introduce fixup_dev_quirks vops
>   scsi: ufs: export ufs_fixup_device_setup() function
>   scsi: ufs-mediatek: add fixup_dev_quirks vops
>   scsi: ufs: add "index" in parameter list of ufshcd_query_flag()
>   scsi: ufs: add LU Dedicated buffer mode support for WriteBooster
>   scsi: ufs-mediatek: enable WriteBooster capability
>   scsi: ufs: cleanup WriteBooster feature
> 
>  drivers/scsi/ufs/ufs-mediatek.c |  25 ++++-
>  drivers/scsi/ufs/ufs-sysfs.c    |  11 ++-
>  drivers/scsi/ufs/ufs.h          |  10 ++
>  drivers/scsi/ufs/ufs_quirks.h   |   7 ++
>  drivers/scsi/ufs/ufshcd.c       | 166 +++++++++++++++++++++-----------
>  drivers/scsi/ufs/ufshcd.h       |  19 +++-
>  6 files changed, 176 insertions(+), 62 deletions(-)
> 
> --
> 2.18.0
Martin K. Petersen May 12, 2020, 3:28 a.m. UTC | #2
On Fri, 8 May 2020 16:01:07 +0800, Stanley Chu wrote:

> This patchset adds LU dedicated buffer mode support for WriteBooster.
> In the meanwhile, enable WriteBooster capability on MediaTek UFS platforms.
> 
> v7 -> v8:
>   - In exported funtion ufshcd_fixup_dev_quirks(), add null checking for parameter "fixups" (Avri Altman)
> 
> v6 -> v7:
>   - Add device descriptor length check in ufshcd_wb_probe() back to prevent out-of-boundary access in ufshcd_wb_probe()
>   - Fix the check of device descriptor length (Avri Altman)
>   - Provide a new ufs_fixup_device_setup() function to pack both device fixup methods by general quirk table and vendor-specific way (Avri Altman)
> 
> [...]

Applied to 5.8/scsi-queue, thanks!

[1/8] scsi: ufs: Enable WriteBooster on some pre-3.1 UFS devices
      https://git.kernel.org/mkp/scsi/c/817d7e140283
[2/8] scsi: ufs: Introduce fixup_dev_quirks vops
      https://git.kernel.org/mkp/scsi/c/c28c00ba4f06
[3/8] scsi: ufs: Export ufs_fixup_device_setup() function
      https://git.kernel.org/mkp/scsi/c/8db269a5102e
[4/8] scsi: ufs-mediatek: Add fixup_dev_quirks vops
      https://git.kernel.org/mkp/scsi/c/62c2f503b54c
[5/8] scsi: ufs: Add "index" in parameter list of ufshcd_query_flag()
      https://git.kernel.org/mkp/scsi/c/1f34eedf9bc1
[6/8] scsi: ufs: Add LU Dedicated buffer mode support for WriteBooster
      https://git.kernel.org/mkp/scsi/c/6f8d5a6a78cf
[7/8] scsi: ufs-mediatek: Enable WriteBooster capability
      https://git.kernel.org/mkp/scsi/c/29060a629135
[8/8] scsi: ufs: Cleanup WriteBooster feature
      https://git.kernel.org/mkp/scsi/c/79e3520f82cb