From patchwork Sun Sep 19 14:33:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sireesh Kodali X-Patchwork-Id: 12504321 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F920C433EF for ; Sun, 19 Sep 2021 14:33:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E601B61244 for ; Sun, 19 Sep 2021 14:33:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231960AbhISOet (ORCPT ); Sun, 19 Sep 2021 10:34:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231918AbhISOet (ORCPT ); Sun, 19 Sep 2021 10:34:49 -0400 Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8A1FC061574; Sun, 19 Sep 2021 07:33:23 -0700 (PDT) Received: by mail-pg1-x535.google.com with SMTP id s11so14759849pgr.11; Sun, 19 Sep 2021 07:33:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=BDxzixVW4qLygzz/rLWj9i1sOmn4ydTQ+VNVepgXop4=; b=bQXsrcOSH4L3JxdQRZRCUYUU4dxddjNDV2CKo1g88ucDU2jw4z5k24S1G3roj70hxI XoAPo11ZZdYCz8yOwiFkv4BDAoCtErTCf7IGVyR1c4obYEpe61d+pyNRTjoJXvqbgFaR HfziQO2K7pQS/eOvh5pbowqVnxfJVD7gshi0Nf9c5nwE7gx0KkwQRD/r5Qm6/GoY3QPG g6S3/atA31w0BwKjZczj3XsCZNoFvaD4r5ytdd3Uxk5qG30oOeW8ZoDDdurn6I+fBLSp EzY96o2wYnYSRTPqHWJ8Kr4ORzY7T6cQUrkIEQ9vVddFUR++u7SHDrKN1GPx4Zv+L8Uv kcNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=BDxzixVW4qLygzz/rLWj9i1sOmn4ydTQ+VNVepgXop4=; b=4pBkQ05+7YOGtglYqPdctayiICkcz/j/3A6fIhjQLXEoUhtkpLM5XOz8ERL/v6jzaR m1xNgcjsfBI/UagZtis39NWlpxeCLjdij2ge8BcXl2nO0PQ4wBdyfLl6VkwUmuHGQKvG tARF3BxT6R2J1P0TBCGkJRTw5eUL6UzL1/K3TH+7mzZg3l/s/vcaTy/32qbCZwJP1fVP ohAXlDDvjvmFAoAElZWOhrJqnqvDhU1rMwRsY2LIWoZWhSHLGNmJ8bx6Nl0+f86ONCHX /9slYkxfzjGWzJ2TGxqJhyKZ+0pMQ+AHLzDMX8g1IOJ0okwsLkUk4faD5uRsU+kloc0C qOxw== X-Gm-Message-State: AOAM530tnI5Rew+UZTiXuR0svfaCNbnwps4fk1Vy531zGk4Ziv+6TRo5 Xj4BiJ4nOY9kE9lAdzFA7cSyEqUnpZG0bg== X-Google-Smtp-Source: ABdhPJwUIh6IB3dx/EHH8UIYeMxZ/aDKDyVul/PTJJsUNhJZxC+tGt+oEU38ATN29dWoZjnFc40sdw== X-Received: by 2002:a62:8015:0:b0:43b:400c:7a73 with SMTP id j21-20020a628015000000b0043b400c7a73mr21045432pfd.34.1632062002769; Sun, 19 Sep 2021 07:33:22 -0700 (PDT) Received: from skynet-linux.local ([106.201.127.154]) by smtp.googlemail.com with ESMTPSA id m2sm13062149pgd.70.2021.09.19.07.33.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Sep 2021 07:33:22 -0700 (PDT) From: Sireesh Kodali To: phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: Sireesh Kodali Subject: [PATCH 0/1] Add support for metadata in bam_dma Date: Sun, 19 Sep 2021 20:03:10 +0530 Message-Id: <20210919143311.31015-1-sireeshkodali1@gmail.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org IPA v2.x uses BAM to send and receive IP packets, to and from the AP. However, unlike its predecessor BAM-DMUX, it doesn't send information about the packet length. To find the length of the packet, one must instead read the bam_desc metadata. This patch adds support for sending the size metadata over the dmaengine metadata api. Currently only the dma size is stored in the metadata. Only client-side metadata is supported for now, because host-side metadata doesn't make sense for IPA, where more than one DMA descriptors could be waiting to be acked and processed. Sireesh Kodali (1): dmaengine: qcom: bam_dma: Add support for metadata drivers/dma/qcom/bam_dma.c | 74 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+)