From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id C24C6A0556; Fri, 26 Aug 2022 14:07:52 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id B667340146; Fri, 26 Aug 2022 14:07:52 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mails.dpdk.org (Postfix) with ESMTP id C11CF40143 for ; Fri, 26 Aug 2022 14:07:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1661515670; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sEut7NzwP1fpEQ/GoiQhJIl/OAM/XCcpo3HqbK/Ks8o=; b=GsTpgsMISwOLHarke9RYwNxmKd2mBYR6j4rN6Ob/X6IQJwgT3dbIY8BBhqXMh3hjXQJQaJ R8RQFbPJsDCVgjTIUHpZXOjrU/whatrttcuUWxZl5+AKdl14ZRV5ieYuM1tYYjFg3sy/CM mqEPYaT1iH9iRFxXRr/fBjHx47pH6/o= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-426-FPFs211UMh-efEBK1cEOSw-1; Fri, 26 Aug 2022 08:07:47 -0400 X-MC-Unique: FPFs211UMh-efEBK1cEOSw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8D5A63804509; Fri, 26 Aug 2022 12:07:46 +0000 (UTC) Received: from [10.39.208.30] (unknown [10.39.208.30]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 933642166B26; Fri, 26 Aug 2022 12:07:44 +0000 (UTC) Message-ID: Date: Fri, 26 Aug 2022 14:07:43 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 To: Nicolas Chautru , dev@dpdk.org, thomas@monjalon.net, gakhil@marvell.com, hemant.agrawal@nxp.com Cc: trix@redhat.com, mdr@ashroe.eu, bruce.richardson@intel.com, david.marchand@redhat.com, stephen@networkplumber.org References: <1655491040-183649-6-git-send-email-nicolas.chautru@intel.com> <1661451851-106079-1-git-send-email-nicolas.chautru@intel.com> <1661451851-106079-6-git-send-email-nicolas.chautru@intel.com> From: Maxime Coquelin Subject: Re: [PATCH v6 5/7] bbdev: add new operation for FFT processing In-Reply-To: <1661451851-106079-6-git-send-email-nicolas.chautru@intel.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On 8/25/22 20:24, Nicolas Chautru wrote: > Extension of bbdev operation to support FFT based operations. > > Signed-off-by: Nicolas Chautru > Acked-by: Hemant Agrawal > --- > 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 Thanks, Maxime