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 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1398C04AB6 for ; Mon, 3 Jun 2019 04:42:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6F77627B83 for ; Mon, 3 Jun 2019 04:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559536979; bh=b0KkH0Lj6BQEkhVygSpgJ3mJjqE4vfh/Xpt0AD6GEtE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=RdEu8o8uV1l6tSp2U3nThapcVvhUkFwXeUKZUgjAwCBp3zFH91cip1jnqnAcoa2N+ TV/WdxDbblujPXnEUbSGi5RtDjI8g0phrRfDnjF2pI5VZNk57B2K84WYzHD+/jpADj 9SllojIaCv5WR8vnn1FWyNvdDQPHrMgcZsvMM1rY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726374AbfFCEm6 (ORCPT ); Mon, 3 Jun 2019 00:42:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:49924 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726277AbfFCEm6 (ORCPT ); Mon, 3 Jun 2019 00:42:58 -0400 Received: from localhost (unknown [106.51.109.249]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9297427B7F; Mon, 3 Jun 2019 04:42:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559536977; bh=b0KkH0Lj6BQEkhVygSpgJ3mJjqE4vfh/Xpt0AD6GEtE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=WA9TJKkMLWxMsSGCBg+GIiPeAkLdPj9QPtUrqyFV53pUeJrwJFb1ZMwRBOM+2ZZPD soo2kg7BO7pclLmv7aHqs95DvajdGpITbc761avkiZAqaLQEOHm3X5z+tG+P0vi/Rj F0jqZWVzFFsLSpaYwDXwWsKnCEtflAKdlqscJcUw= Date: Mon, 3 Jun 2019 10:12:51 +0530 From: Vinod Koul To: Kishon Vijay Abraham I Cc: Alan Mikhak , Gustavo Pimentel , "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "lorenzo.pieralisi@arm.com" , "arnd@arndb.de" , "gregkh@linuxfoundation.org" , "jingoohan1@gmail.com" , "bhelgaas@google.com" , "wen.yang99@zte.com.cn" , "kjlu@umn.edu" , "linux-riscv@lists.infradead.org" , "palmer@sifive.com" , "paul.walmsley@sifive.com" Subject: Re: [PATCH] PCI: endpoint: Add DMA to Linux PCI EP Framework Message-ID: <20190603044251.GS15118@vkoul-mobl> References: <1558650258-15050-1-git-send-email-alan.mikhak@sifive.com> <305100E33629484CBB767107E4246BBB0A6FAFFD@DE02WEMBXB.internal.synopsys.com> <305100E33629484CBB767107E4246BBB0A6FC308@DE02WEMBXB.internal.synopsys.com> <192e3a19-8b69-dfaf-aa5c-45c7087548cc@ti.com> <20190531050727.GO15118@vkoul-mobl> <20190531063247.GP15118@vkoul-mobl> <400a7c28-39b1-f242-7810-a1d38aa51446@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <400a7c28-39b1-f242-7810-a1d38aa51446@ti.com> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Kishon, On 03-06-19, 09:54, Kishon Vijay Abraham I wrote: > right. For the endpoint case, drivers/pci/controller should register with the > dmaengine i.e if the controller has aN embedded DMA (I think it should be okay > to keep that in drivers/pci/controller itself instead of drivers/dma) and > drivers/pci/endpoint/functions/ should use dmaengine API's (Depending on the > platform, this will either use system DMA or DMA within the PCI controller). Typically I would prefer the driver to be part of drivers/dma. Would this be a standalone driver or part of the endpoint driver. In former case we can move to dmaengine for latter i guess it makes sense to stay in PCI Thanks -- ~Vinod