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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 109D5C43612 for ; Mon, 7 Jan 2019 14:36:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D3A56218A3 for ; Mon, 7 Jan 2019 14:36:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728539AbfAGOgJ (ORCPT ); Mon, 7 Jan 2019 09:36:09 -0500 Received: from gloria.sntech.de ([185.11.138.130]:34932 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727854AbfAGOgI (ORCPT ); Mon, 7 Jan 2019 09:36:08 -0500 Received: from wf0848.dip.tu-dresden.de ([141.76.183.80] helo=phil.localnet) by gloria.sntech.de with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ggW0R-0003eu-5K; Mon, 07 Jan 2019 15:35:55 +0100 From: Heiko Stuebner To: Kishon Vijay Abraham I Cc: Lorenzo Pieralisi , Bjorn Helgaas , Gustavo Pimentel , Alan Douglas , Shawn Lin , Jingoo Han , Cyrille Pitchen , Jia-Ju Bai , linux-omap@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 00/15] PCI: endpoint: Cleanup EPC features Date: Mon, 07 Jan 2019 15:35:54 +0100 Message-ID: <1936135.agpnLP3rXd@phil> In-Reply-To: <20190107064148.10152-1-kishon@ti.com> References: <20190107064148.10152-1-kishon@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Montag, 7. Januar 2019, 07:41:33 CET schrieb Kishon Vijay Abraham I: > Hi Lorenzo, > > The Endpoint controller driver uses features member in 'struct pci_epc' > to advertise the list of supported features to the endpoint function > driver. > > There are a few shortcomings with this approach. > *) Certain endpoint controllers support fixed size BAR (e.g. TI's > AM654 uses Designware configuration with fixed size BAR). The > size of each BARs cannot be passed to the endpoint function > driver. > *) Too many macros for handling EPC features. > (EPC_FEATURE_NO_LINKUP_NOTIFIER, EPC_FEATURE_BAR_MASK, > EPC_FEATURE_MSIX_AVAILABLE, EPC_FEATURE_SET_BAR, > EPC_FEATURE_GET_BAR) > *) Endpoint controllers are directly modifying struct pci_epc > members. (I have plans to move struct pci_epc to > drivers/pci/endpoint so that pci_epc members are referenced > only by endpoint core). > > To overcome the above shortcomings, introduced pci_epc_get_features() > API, pci_epc_features structure and a ->get_features() callback. > > Also added a patch to set BAR flags in pci_epf_alloc_space and > remove it from pci-epf-test function driver. > > Tested on TI's DRA7xx platform. While I don't have that much PCI experience and hence cannot judge this cleanup as a whole, I can at least say, that my Rockchip rk3399 still does find its PCIE-connected wifi card, so this series on rk3399 Tested-by: Heiko Stuebner