On 8/25/22 20:24, Nicolas Chautru wrote:
Extension of bbdev operation to support FFT based operations.
Signed-off-by: Nicolas Chautru <nicolas.chau...@intel.com>
Acked-by: Hemant Agrawal <hemant.agra...@nxp.com>
---
doc/guides/prog_guide/bbdev.rst | 130 +++++++++++++++++++++++++++++++++++
lib/bbdev/rte_bbdev.c | 10 ++-
lib/bbdev/rte_bbdev.h | 76 ++++++++++++++++++++
lib/bbdev/rte_bbdev_op.h | 149 ++++++++++++++++++++++++++++++++++++++++
lib/bbdev/version.map | 4 ++
5 files changed, 368 insertions(+), 1 deletion(-)
diff --git a/doc/guides/prog_guide/bbdev.rst b/doc/guides/prog_guide/bbdev.rst
index 70fa01a..150161b 100644
--- a/doc/guides/prog_guide/bbdev.rst
+++ b/doc/guides/prog_guide/bbdev.rst
@@ -1118,6 +1118,136 @@ Figure :numref:`figure_turbo_tb_decode` above
showing the Turbo decoding of CBs using BBDEV interface in TB-mode
is also valid for LDPC decode.
+BBDEV FFT Operation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This operation allows to run a combination of DFT and/or IDFT and/or
time-domain windowing.
+These can be used in a modular fashion (using bypass modes) or as a processing
pipeline
+which can be used for FFT-based baseband signal processing.
+In more details it allows :
+- to process the data first through an IDFT of adjustable size and padding;
+- to perform the windowing as a programmable cyclic shift offset of the data
followed by a
+pointwise multiplication by a time domain window;
+- to process the related data through a DFT of adjustable size and depadding
for each such cyclic
depadding?
+shift output.
+
+A flexible number of Rx antennas are being processed in parallel with the same
configuration.
+The API allows more generally for flexibility in what the PMD may support
(cabability flags) and
s/cabability/capability/
With above typos fixed:
Acked-by: Maxime Coquelin <maxime.coque...@redhat.com>
Thanks,
Maxime
