From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0DA5129A78; Fri, 25 Apr 2025 06:18:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745561912; cv=none; b=PQt+MF0vJO6pghuc0xD7VCGm0wsmxNEBsbAGLFT8BIN+VcRa7sFG5R7KNjjaNPoZ8ZZdb9/xBAclSYFnT7WCnLdUCD5TsLZ+jyZ+NK4LbeStM+7SD4B6OirjuQ8jFOIM6a+Ful/LnipK3Rx6gS3/ndD16n+WLoA8F4QFHPQGTRY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745561912; c=relaxed/simple; bh=TZBqwTGakRiI4xCMOVlYfoco7l7Gxq+F1PuR3rAswoE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ZONwmuCydlKGtBGHOslqPc8xbpv72swHPBpEb/1kCw5yFoVTxzgZFEcqJOvAj0iA/0fnWQqN7cCQlT9dWUsgkbJ1bJeAYdkER2auVELd0gE6bxFm2HqoyPUi+vHsDEqAR92dnrc3pRfgyUcJCkrOKnwtELZo7LByUfyts2iVLIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=efif1Fkv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="efif1Fkv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56039C4CEE4; Fri, 25 Apr 2025 06:18:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745561912; bh=TZBqwTGakRiI4xCMOVlYfoco7l7Gxq+F1PuR3rAswoE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=efif1Fkve+IIndI24SNv7BWar4d22kcjqJZkjcLhP4kEZdmRVIoiq28MHClUVLifA CjGFNAOiW0CBKFkLN+c+EkawiaQ4hMkpRdkZAeVF44mjgV+bOJtozJRUq5Zo93iRoo lJnDU+At0qxHhJ+xhjtdkJ1jrTB28yara2Z3iKx7GDyTs7fzYsuQK8mybusMlt80p4 eLTIubHG3+S6Z1AlwZXNcX3kZhsdvGLyru1ltf3jVXTY2bXIKO0IHCIfLUG2YCwl1i D0C4udRHeFyBA5Qu8MM70l0TH9TGHrm4B+ydBORrMSI0YdXcHHb3JGCNznsmnHEExG sVUfuGbPaULng== Message-ID: Date: Fri, 25 Apr 2025 08:18:25 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [net-next v7 4/7] net: mtip: The L2 switch driver for imx287 To: Lukasz Majewski Cc: Jakub Kicinski , Andrew Lunn , davem@davemloft.net, Eric Dumazet , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Richard Cochran , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Stefan Wahren , Simon Horman , Andrew Lunn References: <20250423072911.3513073-1-lukma@denx.de> <20250423072911.3513073-5-lukma@denx.de> <20250424181110.2734cd0b@kernel.org> <0bf77ef6-d884-44d2-8ecc-a530fee215d1@kernel.org> <20250425080556.138922a8@wsk> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 25/04/2025 08:05, Lukasz Majewski wrote: > Hi Krzysztof, Jakub, > >> On 25/04/2025 03:11, Jakub Kicinski wrote: >>> On Wed, 23 Apr 2025 09:29:08 +0200 Lukasz Majewski wrote: >>>> This patch series provides support for More Than IP L2 switch >>>> embedded in the imx287 SoC. >>>> >>>> This is a two port switch (placed between uDMA[01] and >>>> MAC-NET[01]), which can be used for offloading the network traffic. >>>> >>>> It can be used interchangeably with current FEC driver - to be more >>>> specific: one can use either of it, depending on the requirements. >>>> >>>> The biggest difference is the usage of DMA - when FEC is used, >>>> separate DMAs are available for each ENET-MAC block. >>>> However, with switch enabled - only the DMA0 is used to >>>> send/receive data to/form switch (and then switch sends them to >>>> respecitive ports). >>> >>> Lots of sparse warnings and build issues here, at least on x86. >>> >>> Could you make sure it's clean with an allmodconfig config, >>> something like: >>> >>> make C=1 W=1 drivers/net/ethernet/freescale/mtipsw/ >> >> ... and W=1 with clang as well. >> > > The sparse warnings are because of struct switch_t casting and register clang W=1 fails on errors, so it is not only sparse: error: cast to smaller integer type 'uint' (aka 'unsigned int') from 'struct cbd_t *' [-Werror,-Wpointer-to-int-cast] You probably wanted there kenel_ulong_t. > access with this paradigm (as it is done with other drivers). I don't understand. I see code like: struct switch_t *fecp = fep->hwp; But this is not a cast - the same types. > > What is the advise here from the community? > >> Best regards, >> Krzysztof > > > > > Best regards, > > Lukasz Majewski > > -- > > DENX Software Engineering GmbH, Managing Director: Erika Unter > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de Best regards, Krzysztof