This patch adds core FTL (flash translation layer) submodules.
On regular SSDs the FTL is part of firmware, whereas Open Channel
enables moving it to the host and allows for having full controll
of data placement on the device.
Main functionalities added:
* logical to physical address map
* read / write buffer cache
* wear-leveling
* bad block management
Change-Id: I5c28aa277b212734bd4b1f71ae386b3d6f8c3715
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: Jakub Radtke <jakub.radtke@intel.com>
Signed-off-by: Mateusz Kozlowski <mateusz.kozlowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431322
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This patch introduces core structures required for implementing FTL on
top of Open Channel drives. The Open Channel specification describes raw
access to the media on the SSD. The FTL consumes that API and exposes a
block device interface.
The implementation is based on the revision 2.0 of the Open Channel SSD
specification.
Change-Id: Ie306cdfb7920df3b02233fcb60896745f3184cdc
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431321
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
