From patchwork Wed Dec 9 15:03:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Loic Poulain X-Patchwork-Id: 1413478 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=cM7DPz1e; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CrgB63Vz6z9sVq for ; Thu, 10 Dec 2020 01:57:02 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733312AbgLIO47 (ORCPT ); Wed, 9 Dec 2020 09:56:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40644 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733310AbgLIO4n (ORCPT ); Wed, 9 Dec 2020 09:56:43 -0500 Received: from mail-wm1-x344.google.com (mail-wm1-x344.google.com [IPv6:2a00:1450:4864:20::344]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57694C061794 for ; Wed, 9 Dec 2020 06:56:03 -0800 (PST) Received: by mail-wm1-x344.google.com with SMTP id a3so1960436wmb.5 for ; Wed, 09 Dec 2020 06:56:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ecliB25BkDl7EtZQbZOa7FY8xOJRTZHDugkajt346ps=; b=cM7DPz1e0wcHHZ9QaAHOeggqlWF/cZuUV42BMeczFGC5+e84TsMwJcw4tXIl9ns1kj L3aAJtygMKOM2wVxvo93uEq6Fq9MeJNcdCARhMQp07zoZWEUzyWQmFRYvwxCzYwdoIa5 hF99N00s0iugtQkoBh2oOzmi8Cxat6/gWampLmDqBbroEZ3xhfh821B8RrNdVKAXhQeN H4J3B9Fx3xM2Z6i33jMTg1ASNtqDImExfHmlvwmkA5Bl6stHTYPqbNbh6/Ljl7bc6eGw 0P4FMYYhaWdbfQXnOPACLDi/hZ6f1HwIqVjQnQDcLPniqeguWX/PXe+bpR18XIwprUGj q5wA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=ecliB25BkDl7EtZQbZOa7FY8xOJRTZHDugkajt346ps=; b=EcmUWbzuht9ajSacFRHT5TM5Td92oA5CuCTa6+cQXz3+Ah1pgbaTflxG39/NKKPbf4 mAdA42SEWptd7BrzyWgnUDWz9JfuCqxnAK459nZKGAoCWTDqibhWWLFRaPjkRRILUCWa BfuwsvLwBk0U/HBJGY0KAfe6Fd6U6oCa0BDLr++KnsUSBRx/F1kKP3nJNt/sxNauvHhM iFZnFgdPpWbBXfLffTmiD3DmNmzXKCA7TUmijkEwwdKzEq+UIeWkaUesz/rYh3EV4dud GS0kEl45wAp29LyeFn5BgKy9gacOTcb7l00JGeH+Dc8MhUO+453h5zWm+zd5Gu0I0rsT i+SA== X-Gm-Message-State: AOAM5305+ikTPXdXNZPgjYBXAU506JAmxZkctcL9VjFXn5+owbLvMZBL u6lMNquBE99nCg5FTwYbjVUFag== X-Google-Smtp-Source: ABdhPJwbVyhyvERj8OwNjWetMWm4OEdK1qiCddorl/OduN1GwtyyVG7K2q3FLuwAnoRMsCCBqd5ajw== X-Received: by 2002:a05:600c:410d:: with SMTP id j13mr3196810wmi.95.1607525761755; Wed, 09 Dec 2020 06:56:01 -0800 (PST) Received: from localhost.localdomain ([2a01:e0a:490:8730:c728:53f6:5e7e:2f63]) by smtp.gmail.com with ESMTPSA id i11sm3782219wrm.1.2020.12.09.06.56.01 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 09 Dec 2020 06:56:01 -0800 (PST) From: Loic Poulain To: kuba@kernel.org Cc: manivannan.sadhasivam@linaro.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, davem@davemloft.net, Loic Poulain Subject: [PATCH 2/3] net: mhi: Get RX queue size from MHI core Date: Wed, 9 Dec 2020 16:03:02 +0100 Message-Id: <1607526183-25652-2-git-send-email-loic.poulain@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1607526183-25652-1-git-send-email-loic.poulain@linaro.org> References: <1607526183-25652-1-git-send-email-loic.poulain@linaro.org> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The RX queue size can be determined at runtime by retrieveing the number of available transfer descriptors Signed-off-by: Loic Poulain --- drivers/net/mhi_net.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/mhi_net.c b/drivers/net/mhi_net.c index 8e72d94..0333e07 100644 --- a/drivers/net/mhi_net.c +++ b/drivers/net/mhi_net.c @@ -256,9 +256,6 @@ static int mhi_net_probe(struct mhi_device *mhi_dev, mhi_netdev->mdev = mhi_dev; SET_NETDEV_DEV(ndev, &mhi_dev->dev); - /* All MHI net channels have 128 ring elements (at least for now) */ - mhi_netdev->rx_queue_sz = 128; - INIT_DELAYED_WORK(&mhi_netdev->rx_refill, mhi_net_rx_refill_work); u64_stats_init(&mhi_netdev->stats.rx_syncp); u64_stats_init(&mhi_netdev->stats.tx_syncp); @@ -268,6 +265,9 @@ static int mhi_net_probe(struct mhi_device *mhi_dev, if (err) goto out_err; + /* Number of transfer descriptors determines size of the queue */ + mhi_netdev->rx_queue_sz = mhi_get_free_desc_count(mhi_dev, DMA_FROM_DEVICE); + err = register_netdev(ndev); if (err) goto out_err;