From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D236CCC6B3A for ; Thu, 15 Oct 2026 16:18:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 328C91122D3; Thu, 15 Oct 2026 16:17:56 +0000 (UTC) Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7DC3B1123A2 for ; Thu, 15 Oct 2026 16:17:49 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 8BB60601EF; Thu, 15 Oct 2026 16:17:48 +0000 (UTC) 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261015142552.4128028-3-ryan.roberts@arm.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 :(