[RFC PATCH v2 0/3] Cavium ThunderX ZIP driver

[Mahipal Challa]

Hi Herbert,

This series adds support for hardware accelerated compression & decompression
as found on ThunderX (arm64) SOCs.

As per your suggestion, we've switched to the new crypto acomp/scomp interface.

To test the ZIP driver, we modified the kernel's ZSWAP to use acomp API's.

Performance numbers from ZSWAP look promising.
The "average time" for compressing a 4KB page:

Compression Software    : 278 usec
Compression HW deflate  :  17 usec
Compression HW LZS      :  11 usec

Decompression Software  : 20 usec
Decompression HW deflate:  8 usec
Decompression HW LZS    :  6 usec

Addressed the review comments from the RFC v1.
 - Added acomp/scomp crypto interface support.
 - Improved the error handling.
 - ZIP command completion codes are renamed suitably.
 - Removed some un-used code.
 - raw_smp_processor_id() replaced with smp_processor_id().
 - Some more miscellaneous changes. 

Patches are on top of "kernel/git/herbert/crypto-2.6.git" repository

Please provide your feedback.

Regards,
Mahipal 
------------

Mahipal Challa (3):
  crypto: zip - Add ThunderX ZIP driver core
  crypto: zip - Wire-up Compression / decompression HW offload
  crypto: zip - Add Compression/Decompression statistics

 drivers/crypto/Kconfig                  |    7 +
 drivers/crypto/Makefile                 |    1 +
 drivers/crypto/cavium/Makefile          |    4 +
 drivers/crypto/cavium/zip/Makefile      |   11 +
 drivers/crypto/cavium/zip/common.h      |  202 +++++
 drivers/crypto/cavium/zip/zip_crypto.c  |  314 +++++++
 drivers/crypto/cavium/zip/zip_crypto.h  |   79 ++
 drivers/crypto/cavium/zip/zip_deflate.c |  200 +++++
 drivers/crypto/cavium/zip/zip_deflate.h |   62 ++
 drivers/crypto/cavium/zip/zip_device.c  |  202 +++++
 drivers/crypto/cavium/zip/zip_device.h  |  108 +++
 drivers/crypto/cavium/zip/zip_inflate.c |  223 +++++
 drivers/crypto/cavium/zip/zip_inflate.h |   62 ++
 drivers/crypto/cavium/zip/zip_main.c    |  729 +++++++++++++++++
 drivers/crypto/cavium/zip/zip_main.h    |  121 +++
 drivers/crypto/cavium/zip/zip_mem.c     |  114 +++
 drivers/crypto/cavium/zip/zip_mem.h     |   78 ++
 drivers/crypto/cavium/zip/zip_regs.h    | 1347 +++++++++++++++++++++++++++++++
 18 files changed, 3864 insertions(+)
 create mode 100644 drivers/crypto/cavium/Makefile
 create mode 100644 drivers/crypto/cavium/zip/Makefile
 create mode 100644 drivers/crypto/cavium/zip/common.h
 create mode 100644 drivers/crypto/cavium/zip/zip_crypto.c
 create mode 100644 drivers/crypto/cavium/zip/zip_crypto.h
 create mode 100644 drivers/crypto/cavium/zip/zip_deflate.c
 create mode 100644 drivers/crypto/cavium/zip/zip_deflate.h
 create mode 100644 drivers/crypto/cavium/zip/zip_device.c
 create mode 100644 drivers/crypto/cavium/zip/zip_device.h
 create mode 100644 drivers/crypto/cavium/zip/zip_inflate.c
 create mode 100644 drivers/crypto/cavium/zip/zip_inflate.h
 create mode 100644 drivers/crypto/cavium/zip/zip_main.c
 create mode 100644 drivers/crypto/cavium/zip/zip_main.h
 create mode 100644 drivers/crypto/cavium/zip/zip_mem.c
 create mode 100644 drivers/crypto/cavium/zip/zip_mem.h
 create mode 100644 drivers/crypto/cavium/zip/zip_regs.h

-- 
1.8.3.1