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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 F3A31CC6B39 for ; Thu, 15 Oct 2026 16:18:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=c+imwRzy+TFjWbQ+yNo83g0lH0n4xVBCsI1vuUaGOns=; b=Rl5xOrjdSOmGyx+52Au1Wdpuny KloU8rbTguRQR0PmjqYAM8ZJs+gwa4BcJEdxK92DZoh1UUTh1YIKhvPMB8BQyf9MmrxdRe+4OtpZi IHImy8LFJEqdksV0H5m18SXICu2oSSBRRWJlriZJhF/WKYHnJH74wAnbfNHF7V5Pz04DvqYimD2Vv oAnCKPM3gbIMxeiwnSIT9BjXv1bVaiDw7+DrVr+6CcHE5j1TR0FMiVgnIgUVwCQyH+UpwuKgPYBAi CcMhHzou7w8KMLqlOJTeTGGbsycL8qkrNRqMxfejwRZPTqb8nHndNgESGuAzDmTS+zmoGj9s7VdBn vp1xa5eg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHO9g-00000000o5S-0P52; Thu, 15 Oct 2026 16:18:08 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHO9N-00000000o0z-43wP for linux-arm-kernel@lists.infradead.org; Thu, 15 Oct 2026 16:17:50 +0000 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: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 :(