e58e9fbda8
Module, etc., will follow. Notes: * IDXD is an Intel silicon feature available in future Intel CPUs. Initial development is being done on a simulator. Once HW is available and the code fully tested the experimental label will be lifted. Spec can be found here: https://software.intel.com/en-us/download/intel-data-streaming-accelerator-preliminary-architecture-specification * The current implementation will only work with VFIO. * DSA has a number of engines that can be grouped based on application need such as type of memory being served or QoS. Engines are processing units and are assigned to groups. Work queues are on device structures that act as front-end groups for queueing descriptors. Full details on what is configurable & how will come in later doc patches. * There is a finite number of work queue slots that are divided amongst the number of desired work queues in some fashion (ie evenly). * SW (outside of the idxd lib) is required to manage flow control, to not over-run the work queues.This is provided in the accel plug-in module. The upper layers use public API to manage this. * Work queue submissions are done with a 64 byte atomic instruction * The design here creates a set of descriptor rings per channel that match the size of the work queues. Then, an spdk_bit_array is used to make sure we don't overrun a queue. If there are not slots available, the operation is put on a linked list to be retried later from the poller. * As we need to support any number of channels (we can't limit ourselves to the number of work queues) we need to dynamically size/resize our per channel descriptor rings based on the number of current channels. This is done from upper layers via public API into the lib. * As channels are created, the total number of work queue slots is divided across the channels evenly. Same thing when they are destroyed, remaining channels with see the ring sizes increase. This is done from upper layers via public API into the lib. * The sim has 64 total work queue entries (WQE) that get dolled out to the work queues (WQ) evenly. Signed-off-by: paul luse <paul.e.luse@intel.com> Change-Id: I899bbeda3cef3db05bea4197b8757e89dddb579d Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/1809 Community-CI: Mellanox Build Bot Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Vitaliy Mysak <vitaliy.mysak@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
175 lines
4.4 KiB
Plaintext
175 lines
4.4 KiB
Plaintext
#
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# BSD LICENSE
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#
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# Copyright (c) Intel Corporation.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Intel Corporation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Installation prefix
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CONFIG_PREFIX="/usr/local"
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# Target architecture
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CONFIG_ARCH=native
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# Prefix for cross compilation
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CONFIG_CROSS_PREFIX=
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# Build with debug logging. Turn off for performance testing and normal usage
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CONFIG_DEBUG=n
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# Build with support of backtrace printing in log messages. Requires libunwind.
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CONFIG_LOG_BACKTRACE=n
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# Treat warnings as errors (fail the build on any warning).
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CONFIG_WERROR=n
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# Build with link-time optimization.
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CONFIG_LTO=n
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# Generate profile guided optimization data.
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CONFIG_PGO_CAPTURE=n
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# Use profile guided optimization data.
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CONFIG_PGO_USE=n
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# Build with code coverage instrumentation.
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CONFIG_COVERAGE=n
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# Build with Address Sanitizer enabled
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CONFIG_ASAN=n
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# Build with Undefined Behavior Sanitizer enabled
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CONFIG_UBSAN=n
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# Build with Thread Sanitizer enabled
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CONFIG_TSAN=n
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# Build functional tests
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CONFIG_TESTS=y
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# Build unit tests
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CONFIG_UNIT_TESTS=y
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# Build examples
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CONFIG_EXAMPLES=y
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# Directory that contains the desired SPDK environment library.
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# By default, this is implemented using DPDK.
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CONFIG_ENV=
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# This directory should contain 'include' and 'lib' directories for your DPDK
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# installation.
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CONFIG_DPDK_DIR=
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# Build SPDK FIO plugin. Requires CONFIG_FIO_SOURCE_DIR set to a valid
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# fio source code directory.
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CONFIG_FIO_PLUGIN=n
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# This directory should contain the source code directory for fio
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# which is required for building the SPDK FIO plugin.
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CONFIG_FIO_SOURCE_DIR=/usr/src/fio
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# Enable RDMA support for the NVMf target.
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# Requires ibverbs development libraries.
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CONFIG_RDMA=n
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CONFIG_RDMA_SEND_WITH_INVAL=n
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CONFIG_RDMA_SET_ACK_TIMEOUT=n
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# Enable NVMe Character Devices.
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CONFIG_NVME_CUSE=n
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# Enable FC support for the NVMf target.
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# Requires FC low level driver (from FC vendor)
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CONFIG_FC=n
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CONFIG_FC_PATH=
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# Build Ceph RBD support in bdev modules
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# Requires librbd development libraries
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CONFIG_RBD=n
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# Build vhost library.
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CONFIG_VHOST=y
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CONFIG_VHOST_INTERNAL_LIB=n
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# Build vhost initiator (Virtio) driver.
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CONFIG_VIRTIO=y
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# Build with PMDK backends
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CONFIG_PMDK=n
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CONFIG_PMDK_DIR=
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# Enable the dependencies for building the compress vbdev
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CONFIG_REDUCE=n
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# Build with VPP
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CONFIG_VPP=n
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CONFIG_VPP_DIR=
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# Requires libiscsi development libraries.
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CONFIG_ISCSI_INITIATOR=n
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# Enable the dependencies for building the crypto vbdev
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CONFIG_CRYPTO=n
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# Build spdk shared libraries in addition to the static ones.
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CONFIG_SHARED=n
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# Build with VTune suport.
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CONFIG_VTUNE=n
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CONFIG_VTUNE_DIR=
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# Build the dpdk igb_uio driver
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CONFIG_IGB_UIO_DRIVER=n
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# Build Intel IPSEC_MB library
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CONFIG_IPSEC_MB=n
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# Enable OCF module
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CONFIG_OCF=n
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CONFIG_OCF_PATH=
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CONFIG_CUSTOMOCF=n
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# Build ISA-L library
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CONFIG_ISAL=y
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# Build with IO_URING support
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CONFIG_URING=n
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# Path to custom built IO_URING library
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CONFIG_URING_PATH=
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# Build with FUSE support
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CONFIG_FUSE=n
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# Build with RAID5 support
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CONFIG_RAID5=n
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# Build with IDXD support
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CONFIG_IDXD=n
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