Received: by 2002:a05:6a10:17d3:0:0:0:0 with SMTP id hz19csp3006773pxb; Tue, 13 Apr 2021 16:13:45 -0700 (PDT) X-Google-Smtp-Source: ABdhPJybw2FfTGt/iaig9xg4E42AIX1jH2/9RLg6m+H03vWY0Yhb+n99lxHMfFeCCzI4Tkwxq88H X-Received: by 2002:a17:906:4d10:: with SMTP id r16mr26185391eju.169.1618355624986; Tue, 13 Apr 2021 16:13:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1618355624; cv=none; d=google.com; s=arc-20160816; b=vyCaPVwBPsJlBk27dxV0tgK02wtss/DtDVe585qKE4fNA1CKihIPedsvxDReNg6VI6 ofpcW4SRBkQWCXr+QR3G8Qvc4gbYRC1Yn6ccXQ0E3bBE8uIfAOc2KFQKiYMHk+e2IlW0 iKuknMx91p8Xa3chHzlIgHp0C/Yj/lQw/yYb4tYyv0f+6oZzObcmWMcHZ0H5vGHHvChI rA5Pxjl8jTvFB+om/ON0g8hPucjoio6XsBbAWopQ3S/PT2S0GOe1uWkFKPGrWicd4+T9 QedECPFuZiXl7n7yWhQX6ywfYgVVKVUgcRl0pIXkUjPCM+TNwQsX5BZIZRR8Wb1D+8wd Lfug== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :message-id:subject:cc:to:from:date:dkim-signature; bh=Wa/gDKXmZV9s5Y2WwqHku8tYb/6GMUjD/iJKaGmu7/E=; b=yA4q0aW6xgI2NYP/KfCg4aZrUR/ljXNeKa9YKVZBxd8OuoHw7USAzMuaULMWDlDRin ItXvoKuRINNzVLEd+BHGf1mEpc1Jh4t5nxCHux+OvJiq62/y5oJu/onWqHWqFLTxk65K rgt2PIV5Nv6Z5J1Sm0bVwOTe0/f0+tApjwUqTkGz9L5muXBjEndeve6EtniuKe3lP+T3 L3O9wE5deMsh5hcDlhTtJRVgp/bNRH+PuHLdTp/g2lY9z/FWw0yCyDLHTRGSesCegxvD bHzHPWbi4Zmo/4hNfkrkHOAzs5EKJaXlsIb9KiCP4qZdXtycMZ264NuVQVztkLvgutBL euDg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=E5tOj1ht; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id ho20si11495624ejc.295.2021.04.13.16.13.22; Tue, 13 Apr 2021 16:13:44 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=E5tOj1ht; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348023AbhDMTFc (ORCPT + 99 others); Tue, 13 Apr 2021 15:05:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:60716 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231734AbhDMTFb (ORCPT ); Tue, 13 Apr 2021 15:05:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F37F9613CA; Tue, 13 Apr 2021 19:05:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618340711; bh=4Ni2D0JUJ42Est7AJ0WpTT8dYYJFoHWL2Gb1omodwC4=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=E5tOj1ht7JAZoA45fjn5AJPCOcYkUxA6HJR0noeyrwa0ogD1ofa+bAfI/4gy9GRAt zcSV7bWTOSQ64roa6Bfwe4x48tAuqG3Tx5zO3fbr8NhZB3J86SFA109BXiXhKxDyl4 MDSN+61Bf0p8Rq1jurlKFVNLiRTdBHMdW5ccdYQ7FhuS+1bOL4Je3dbCueP5CjFQ2S bWueyMhZRODLv8geYEgzBuBBhjm/08so5aJf6uefuYyiDOulL4UHysVJcgzdrYpzsy 0jDiXfEh80Hl0sZbCn7iM4VVeGwZR2UvInbWe+BvGPMVzOnMcal0S/eVcQ4gpnLcKV Ez3CDMD1OBJ3A== Date: Tue, 13 Apr 2021 14:05:09 -0500 From: Bjorn Helgaas To: Vidya Sagar Cc: Matthew Wilcox , bhelgaas@google.com, lorenzo.pieralisi@arm.com, amurray@thegoodpenguin.co.uk, robh@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, Krishna Thota , Manikanta Maddireddy , Thierry Reding , Jonathan Hunter , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org Subject: Re: Device driver location for the PCIe root port's DMA engine Message-ID: <20210413190509.GA2256814@bjorn-Precision-5520> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5fe57865-41f8-67c5-e6a6-9abe7252591c@nvidia.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 13, 2021 at 11:42:15PM +0530, Vidya Sagar wrote: > On 4/13/2021 3:23 AM, Bjorn Helgaas wrote: > > The existing port services (AER, DPC, hotplug, etc) are things the > > device advertises via the PCI Capabilities defined by the generic PCIe > > spec, and in my opinion the support for them should be directly part > > of the PCI core and activated when the relevant Capability is present. > Is there an on-going activity to remove port service drivers are move > AER/DPC/Hotplug etc.. handling within PCI core? No, not that I'm aware of. I'd just like to avoid extending that model. Bjorn