mbox series

[RFC,v3,0/2] ufs: introduce callbacks to get command information

Message ID cover.1593752220.git.kwmad.kim@samsung.com (mailing list archive)
Headers show
Series ufs: introduce callbacks to get command information | expand

Message

Kiwoong Kim July 3, 2020, 5:31 a.m. UTC 
v2 -> v3
fix build errors

v1 -> v2
change callbacks
allocate memory for ufs_s_dbg_mgr dynamically, not static way

Some SoC specific might need command history for
various reasons, such as stacking command contexts
in system memory to check for debugging in the future
or scaling some DVFS knobs to boost IO throughput.

What you would do with the information could be
variant per SoC vendor.

Kiwoong Kim (2):
  ufs: introduce a callback to get info of command completion
  exynos-ufs: implement dbg_register_dump and compl_xfer_req

 drivers/scsi/ufs/Kconfig          |  14 +++
 drivers/scsi/ufs/Makefile         |   2 +-
 drivers/scsi/ufs/ufs-exynos-dbg.c | 202 ++++++++++++++++++++++++++++++++++++++
 drivers/scsi/ufs/ufs-exynos-if.h  |  17 ++++
 drivers/scsi/ufs/ufs-exynos.c     |  63 +++++++++++-
 drivers/scsi/ufs/ufs-exynos.h     |  13 +++
 drivers/scsi/ufs/ufshcd.c         |   2 +
 drivers/scsi/ufs/ufshcd.h         |   8 ++
 8 files changed, 318 insertions(+), 3 deletions(-)
 create mode 100644 drivers/scsi/ufs/ufs-exynos-dbg.c
 create mode 100644 drivers/scsi/ufs/ufs-exynos-if.h