From patchwork Tue Jul 21 06:48:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhou Wang X-Patchwork-Id: 6832331 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 727FE9F358 for ; Tue, 21 Jul 2015 06:45:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6993D2062E for ; Tue, 21 Jul 2015 06:45:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6693F20481 for ; Tue, 21 Jul 2015 06:45:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752293AbbGUGpO (ORCPT ); Tue, 21 Jul 2015 02:45:14 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:1152 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751916AbbGUGpN (ORCPT ); Tue, 21 Jul 2015 02:45:13 -0400 Received: from 172.24.1.51 (EHLO szxeml431-hub.china.huawei.com) ([172.24.1.51]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BJQ07417; Tue, 21 Jul 2015 14:42:24 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by szxeml431-hub.china.huawei.com (10.82.67.208) with Microsoft SMTP Server id 14.3.158.1; Tue, 21 Jul 2015 14:42:11 +0800 From: Zhou Wang To: Bjorn Helgaas , Jingoo Han , Pratyush Anand , Arnd Bergmann , , , James Morse , CC: , , , , , , , , , , , Zhou Wang Subject: [PATCH v4 1/5] ARM/PCI: remove align_resource in pci_sys_data Date: Tue, 21 Jul 2015 14:48:39 +0800 Message-ID: <1437461323-3531-2-git-send-email-wangzhou1@hisilicon.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1437461323-3531-1-git-send-email-wangzhou1@hisilicon.com> References: <1437461323-3531-1-git-send-email-wangzhou1@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.55ADE9D0.00E0, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 0a632122970d2a463fac8f8727f05ad3 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-8.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 This patch is needed in order to unify the PCIe designware framework for ARM and ARM64 architectures. In the PCIe designware unification process we are calling pci_create_root_bus() passing a "sysdata" parameter that is the same for both ARM and ARM64 and is of type "struct pcie_port*". In the ARM case this will cause a problem with the function pcibios_align_resource(); in fact this will cast "dev->sysdata" to "struct pci_sys_data*", whereas designware had passed a "struct pcie_port*" pointer. This patch solves the issue by removing "align_resource" from "pci_sys_data" struct and defining a static global function pointer in "bios32.c" Signed-off-by: Gabriele Paoloni Signed-off-by: Zhou Wang --- arch/arm/include/asm/mach/pci.h | 5 ----- arch/arm/kernel/bios32.c | 12 ++++++++---- 2 files changed, 8 insertions(+), 9 deletions(-) diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h index 28b9bb3..8a4e4de 100644 --- a/arch/arm/include/asm/mach/pci.h +++ b/arch/arm/include/asm/mach/pci.h @@ -58,11 +58,6 @@ struct pci_sys_data { /* IRQ mapping */ int (*map_irq)(const struct pci_dev *, u8, u8); /* Resource alignement requirements */ - resource_size_t (*align_resource)(struct pci_dev *dev, - const struct resource *res, - resource_size_t start, - resource_size_t size, - resource_size_t align); void *private_data; /* platform controller private data */ }; diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index fcbbbb1..4cdc64d 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -17,6 +17,11 @@ #include static int debug_pci; +static resource_size_t (*align_resource)(struct pci_dev *dev, + const struct resource *res, + resource_size_t start, + resource_size_t size, + resource_size_t align) = NULL; #ifdef CONFIG_PCI_MSI struct msi_controller *pcibios_msi_controller(struct pci_dev *dev) @@ -468,7 +473,7 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw, sys->busnr = busnr; sys->swizzle = hw->swizzle; sys->map_irq = hw->map_irq; - sys->align_resource = hw->align_resource; + align_resource = hw->align_resource; INIT_LIST_HEAD(&sys->resources); if (hw->private_data) @@ -589,7 +594,6 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res, resource_size_t size, resource_size_t align) { struct pci_dev *dev = data; - struct pci_sys_data *sys = dev->sysdata; resource_size_t start = res->start; if (res->flags & IORESOURCE_IO && start & 0x300) @@ -597,8 +601,8 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res, start = (start + align - 1) & ~(align - 1); - if (sys->align_resource) - return sys->align_resource(dev, res, start, size, align); + if (align_resource) + return align_resource(dev, res, start, size, align); return start; }