From patchwork Mon Jan 7 06:41:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 10749913 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0483D14E2 for ; Mon, 7 Jan 2019 06:43:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E9A9D28446 for ; Mon, 7 Jan 2019 06:43:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DC9D628B00; Mon, 7 Jan 2019 06:43:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8E5FD28446 for ; Mon, 7 Jan 2019 06:43:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726285AbfAGGnG (ORCPT ); Mon, 7 Jan 2019 01:43:06 -0500 Received: from fllv0016.ext.ti.com ([198.47.19.142]:36580 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725771AbfAGGnG (ORCPT ); Mon, 7 Jan 2019 01:43:06 -0500 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x076gj8U021418; Mon, 7 Jan 2019 00:42:45 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1546843365; bh=DSaAqsEfEzTCywHsfjCCo04K82q4H4Dl4uu8P0Qbj8E=; h=From:To:CC:Subject:Date; b=kZPHA6oKtBt1ZBJwMnyd7XEFM3Wof6RkU8UM+/WBldwlDlTJ9C4TudSECdkNDY3uT 45/oMF49uYteHJENr2aMvBzAL0fQEfhHFhnYw53lhFjygBFUwsVtn+T3FQaS0Ob1/M kuiWp+HxVP10lXqyVFFtPGWLZavoseBONQMM0zWE= Received: from DFLE103.ent.ti.com (dfle103.ent.ti.com [10.64.6.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x076gj8A070684 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 7 Jan 2019 00:42:45 -0600 Received: from DFLE101.ent.ti.com (10.64.6.22) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Mon, 7 Jan 2019 00:42:45 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE101.ent.ti.com (10.64.6.22) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Mon, 7 Jan 2019 00:42:45 -0600 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x076gfnv002672; Mon, 7 Jan 2019 00:42:41 -0600 From: Kishon Vijay Abraham I To: Lorenzo Pieralisi , Bjorn Helgaas , Gustavo Pimentel , Alan Douglas , Shawn Lin CC: Jingoo Han , Heiko Stuebner , Cyrille Pitchen , Jia-Ju Bai , , , , , , Subject: [PATCH 00/15] PCI: endpoint: Cleanup EPC features Date: Mon, 7 Jan 2019 12:11:33 +0530 Message-ID: <20190107064148.10152-1-kishon@ti.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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. Thanks Kishon Kishon Vijay Abraham I (15): PCI: endpoint: Add new pci_epc_ops to get EPC features PCI: dwc: Add ->get_features() callback function in dw_pcie_ep_ops PCI: designware-plat: Populate ->get_features() dw_pcie_ep_ops PCI: pci-dra7xx: Populate ->get_features() dw_pcie_ep_ops PCI: rockchip: Populate ->get_features() dw_pcie_ep_ops PCI: cadence: Populate ->get_features() cdns_pcie_epc_ops PCI: endpoint: Add helper to get first unreserved BAR PCI: endpoint: Fix pci_epf_alloc_space to set correct MEM TYPE flags PCI: pci-epf-test: Remove setting epf_bar flags in function driver PCI: pci-epf-test: Do not allocate next BARs memory if current BAR is 64Bit PCI: pci-epf-test: Use pci_epc_get_features to get EPC features PCI: cadence: Remove pci_epf_linkup from Cadence EP driver PCI: rockchip: Remove pci_epf_linkup from Rockchip EP driver PCI: designware-plat: Remove setting epc->features in Designware plat EP driver PCI: endpoint: Remove features member in struct pci_epc drivers/pci/controller/dwc/pci-dra7xx.c | 13 +++ .../pci/controller/dwc/pcie-designware-ep.c | 12 +++ .../pci/controller/dwc/pcie-designware-plat.c | 17 +++- drivers/pci/controller/dwc/pcie-designware.h | 1 + drivers/pci/controller/pcie-cadence-ep.c | 25 +++--- drivers/pci/controller/pcie-rockchip-ep.c | 16 +++- drivers/pci/endpoint/functions/pci-epf-test.c | 80 ++++++++++--------- drivers/pci/endpoint/pci-epc-core.c | 52 ++++++++++++ drivers/pci/endpoint/pci-epf-core.c | 3 + include/linux/pci-epc.h | 30 +++++-- 10 files changed, 185 insertions(+), 64 deletions(-) Tested-by: Heiko Stuebner