From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 1768B52B1EC; Thu, 15 Oct 2026 16:17:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792081085; cv=none; b=VIvo0e1+mNdNJCPkXyezHN41F2fDqNb93lOBMXTbS99AudA7YO5D00gU8NxscD0Bc3YxAr6OEIFLRlXZoN37qgDhtAkUJYIjQMhKP+h+Lbyd0ZwgFrH13bcpFNjU797VbnWK6LkIkJZJmMSvMUMACIw1F9rZGyWkU0UbjlQ/VNM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792081085; c=relaxed/simple; bh=CcTsQvG5H264PXNNnbzWGFQnXy4xmeYHvfS34lkt86Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YkE/myxWfUMWGlZlRdncV3ZkZGcoxVhCJ2xTg/eIzpmMgC7WYIXb49d28YwAKotLrU17mbsCjrXckFXK1D/fbUfCkFkIR5E4Q/qFJmku91Xqo0DeRTBMKJUgXfUqXd382DzkUaCMMq7NnvyPq9OtXVZQppJJl5D13mCmcs3qqGQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YRFhddnO; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="YRFhddnO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95EFC1F000C4; Thu, 15 Oct 2026 16:17:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792081068; bh=c+imwRzy+TFjWbQ+yNo83g0lH0n4xVBCsI1vuUaGOns=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=YRFhddnOwD67BDUZz8e+5AHZfAUyqZTD22qHQFLAaw0mX2G1Td8dj64kQAcpTaBmB an3MHuPXbXjRjAAWTHrEfeCBQ23VfxijrwFYdpjokFn7IMZaO0aDLYDSllOGxzPnca j4f4TyUtOAEnSWlIctPI1smEokMCFZ50ju4VKrdM= Date: Thu, 15 Oct 2026 18:17:52 +0200 From: Greg Kroah-Hartman To: Ryan Roberts Cc: Arnd Bergmann , Catalin Marinas , Will Deacon , Mark Rutland , Marc Zyngier , Oliver Upton , Alex Williamson , Jason Gunthorpe , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jean-Philippe Brucker , Oded Gabbay , Jonathan Corbet , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org Subject: Re: [RFC PATCH v2 02/15] misc/arm-cla: Add launch operation helpers Message-ID: <2026101542-briskness-most-a8ca@gregkh> References: <20261015142552.4128028-1-ryan.roberts@arm.com> <20261015142552.4128028-3-ryan.roberts@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261015142552.4128028-3-ryan.roberts@arm.com> On Thu, Oct 15, 2026 at 03:25:36PM +0100, Ryan Roberts wrote: > From: Jean-Philippe Brucker > > CLA commands are issued by writing optional payload registers, > programming the LAUNCH register and polling LRESP until the hardware > accepts or rejects the operation. > > Add a common launch helper that performs this sequence on the CLA's > local CPU, waits for LRESP completion and translates launch response > codes into Linux errors. > > Build accelerator reset and register read and write support on top of > it. The register read and write helpers split larger accesses into > multiple launch operations when an access crosses an eight-register > window. > > Signed-off-by: Jean-Philippe Brucker You forgot to sign off on patches from others :(