From patchwork Fri Jul 18 15:14:25 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 4585781 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 49D9C9F26C for ; Fri, 18 Jul 2014 15:17:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E6282201BA for ; Fri, 18 Jul 2014 15:17:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD82B20120 for ; Fri, 18 Jul 2014 15:17:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965624AbaGRPRZ (ORCPT ); Fri, 18 Jul 2014 11:17:25 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:35825 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965465AbaGRPP4 (ORCPT ); Fri, 18 Jul 2014 11:15:56 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s6IFEVCr016912; Fri, 18 Jul 2014 10:14:31 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s6IFEV2u023773; Fri, 18 Jul 2014 10:14:31 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.174.1; Fri, 18 Jul 2014 10:14:30 -0500 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id s6IFESYl025193; Fri, 18 Jul 2014 10:14:30 -0500 From: Murali Karicheri To: , , CC: Murali Karicheri , Russell King , Grant Likely , Rob Herring , Bjorn Helgaas , Richard Zhu , Kishon Vijay Abraham I , Marek Vasut , Arnd Bergmann , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Randy Dunlap Subject: [PATCH v6 1/5] PCI: designware: add rd[wr]_other_conf API Date: Fri, 18 Jul 2014 11:14:25 -0400 Message-ID: <1405696469-7172-2-git-send-email-m-karicheri2@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1405696469-7172-1-git-send-email-m-karicheri2@ti.com> References: <1405696469-7172-1-git-send-email-m-karicheri2@ti.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP v3.65 version of the designware h/w, requires application space registers to be configured to access the remote EP config space. To support this, add rd[wr]_other_conf API in the pcie_host_opts Signed-off-by: Murali Karicheri Reviewed-by: Pratyush Anand Acked-by: Mohit Kumar Acked-by: Jingoo Han Acked-by: Santosh Shilimkar CC: Russell King CC: Grant Likely CC: Rob Herring CC: Bjorn Helgaas CC: Richard Zhu CC: Kishon Vijay Abraham I CC: Marek Vasut CC: Arnd Bergmann CC: Pawel Moll CC: Mark Rutland CC: Ian Campbell CC: Kumar Gala CC: Randy Dunlap CC: Grant Likely --- drivers/pci/host/pcie-designware.c | 12 ++++++++++-- drivers/pci/host/pcie-designware.h | 4 ++++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index 1eaf4df..d8f3af7 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -656,7 +656,11 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, } if (bus->number != pp->root_bus_nr) - ret = dw_pcie_rd_other_conf(pp, bus, devfn, + if (pp->ops->rd_other_conf) + ret = pp->ops->rd_other_conf(pp, bus, devfn, + where, size, val); + else + ret = dw_pcie_rd_other_conf(pp, bus, devfn, where, size, val); else ret = dw_pcie_rd_own_conf(pp, where, size, val); @@ -679,7 +683,11 @@ static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn, return PCIBIOS_DEVICE_NOT_FOUND; if (bus->number != pp->root_bus_nr) - ret = dw_pcie_wr_other_conf(pp, bus, devfn, + if (pp->ops->wr_other_conf) + ret = pp->ops->wr_other_conf(pp, bus, devfn, + where, size, val); + else + ret = dw_pcie_wr_other_conf(pp, bus, devfn, where, size, val); else ret = dw_pcie_wr_own_conf(pp, where, size, val); diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h index 77f592f..8121901 100644 --- a/drivers/pci/host/pcie-designware.h +++ b/drivers/pci/host/pcie-designware.h @@ -61,6 +61,10 @@ struct pcie_host_ops { u32 val, void __iomem *dbi_base); int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val); int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val); + int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus, + unsigned int devfn, int where, int size, u32 *val); + int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus, + unsigned int devfn, int where, int size, u32 val); int (*link_up)(struct pcie_port *pp); void (*host_init)(struct pcie_port *pp); };