Commit ef2e614c authored by Wojciech Malikowski's avatar Wojciech Malikowski Committed by Ben Walker
Browse files

ftl: Initial implementation 



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: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
Signed-off-by: default avatarWojciech Malikowski <wojciech.malikowski@intel.com>
Signed-off-by: default avatarJakub Radtke <jakub.radtke@intel.com>
Signed-off-by: default avatarMateusz Kozlowski <mateusz.kozlowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/431322


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent e9a236d2

CONFIG

+3 −0
Original line number Diff line number Diff line
@@ -118,3 +118,6 @@ CONFIG_VTUNE_DIR= 


# Build the dpdk igb_uio driver

CONFIG_IGB_UIO_DRIVER=n



# Build FTL library

CONFIG_FTL=n

configure

+6 −0
Original line number Diff line number Diff line
@@ -263,6 +263,12 @@ for i in "$@"; do 
		--without-igb-uio-driver)

			CONFIG[IGB_UIO_DRIVER]=n

			;;

		--with-ftl)

			CONFIG[FTL]=y

			;;

		--without-ftl)

			CONFIG[FTL]=n

			;;

		--)

			break

			;;

lib/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ DIRS-$(CONFIG_VIRTIO) += virtio 
endif



DIRS-$(CONFIG_REDUCE) += reduce

DIRS-$(CONFIG_FTL) += ftl



# If CONFIG_ENV is pointing at a directory in lib, build it.

# Out-of-tree env implementations must be built separately by the user.

lib/ftl/Makefile

0 → 100644
+40 −0
Original line number Diff line number Diff line 
#

#  BSD LICENSE

#

#  Copyright (c) Intel Corporation.

#  All rights reserved.

#

#  Redistribution and use in source and binary forms, with or without

#  modification, are permitted provided that the following conditions

#  are met:

#

#    * Redistributions of source code must retain the above copyright

#      notice, this list of conditions and the following disclaimer.

#    * Redistributions in binary form must reproduce the above copyright

#      notice, this list of conditions and the following disclaimer in

#      the documentation and/or other materials provided with the

#      distribution.

#    * Neither the name of Intel Corporation nor the names of its

#      contributors may be used to endorse or promote products derived

#      from this software without specific prior written permission.

#

#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#



SPDK_ROOT_DIR := $(abspath $(CURDIR)/../..)

include $(SPDK_ROOT_DIR)/mk/spdk.common.mk



C_SRCS = ftl_band.c ftl_core.c ftl_debug.c ftl_io.c ftl_rwb.c

LIBNAME = ftl



include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

lib/ftl/ftl_band.c

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File added.

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