[RFC PATCH v3 0/4] UFS Multi-Circular Queue (MCQ)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



UFS Multi-Circular Queue (MCQ) has been added in UFSHCI v4.0 to improve storage performance.
This patch series is a RFC implementation of this.

This is the initial driver implementation and it has been verified by booting on an emulation
platform. During testing, all low power modes were disabled and it was in HS-G1 mode.

Please take a look and let us know your thoughts.

v2 -> v3:
- Split the changes based on functionality
- Addressed queue configuration issues
- Faster SQE tail pointer increments
- Addressed comments from Bart and Manivannan

v1 -> v2:
- Enabled host_tagset
- Added queue num configuration support
- Added one more vops to allow vendor provide the wanted MAC
- Determine nutrs and can_queue by considering both MAC, bqueuedepth and EXT_IID support
- Postponed MCQ initialization and scsi_add_host() to async probe
- Used (EXT_IID, Task Tag) tuple to support up to 4096 tasks (theoretically)


Asutosh Das (2):
  ufs: core: prepare ufs for multi circular queue support
  ufs: core: mcq: Adds Multi-Circular Queue support

Can Guo (2):
  ufs: core: Add Event Specific Interrupt configuration vendor specific
    ops
  ufs: host: qcom: Add MCQ support

 drivers/ufs/core/Makefile      |   2 +-
 drivers/ufs/core/ufs-mcq.c     | 474 +++++++++++++++++++++++++++++++++++++++++
 drivers/ufs/core/ufshcd-priv.h | 102 +++++++++
 drivers/ufs/core/ufshcd.c      | 370 +++++++++++++++++++++++++-------
 drivers/ufs/host/ufs-qcom.c    | 134 ++++++++++++
 drivers/ufs/host/ufs-qcom.h    |  13 ++
 include/ufs/ufs.h              |   6 +
 include/ufs/ufshcd.h           | 137 ++++++++++++
 include/ufs/ufshci.h           |  79 +++++++
 9 files changed, 1238 insertions(+), 79 deletions(-)
 create mode 100644 drivers/ufs/core/ufs-mcq.c

-- 
2.7.4




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux