From patchwork Wed Mar 5 11:48:52 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liviu Dudau X-Patchwork-Id: 25764 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-ie0-f199.google.com (mail-ie0-f199.google.com [209.85.223.199]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id 45808203C3 for ; Wed, 5 Mar 2014 11:52:49 +0000 (UTC) Received: by mail-ie0-f199.google.com with SMTP id rl12sf3184504iec.10 for ; Wed, 05 Mar 2014 03:52:48 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:in-reply-to:references:sender:precedence:list-id :x-original-sender:x-original-authentication-results:mailing-list :list-post:list-help:list-archive:list-unsubscribe; bh=J/2EdNuV2C3LIUCb7kzQiAFAhEQhs3/jk3yFpeUnLSI=; b=UaDr7J+MGD3lZOuQ3RvNGI8RsYNic0GArFpNlZv+WPMEmiy+KxqS21yvdldVDyDpQR PwPL6FQGv/O5CMAZI0cs2LIjIdcp8B1u+QV9X7mU1OX+q3KuDVSz20LpaSxda+nsLukd n4BiGeHR2HtIjdPN8bPsigk8ldrGetzTtbVGIlYAd4cvfJkE94c696wBIntwBDs+LvN3 dtFF64ZTh7fdWw5E2baeAuxRnpZMnzZ7RVKjXCyS6uJNvsq98SB5zSRA0/7utxw+A3Nm U2f5TmmlezpwQXsGJaI2XdKL9bmTrgUQUiSyX5JYEGlDlxup5w18OvWffCXl20MHQAHW IV/Q== X-Gm-Message-State: ALoCoQluN1Wymugb+S4PJ7WwDdUR4NKchtOomHYpRALdp8z7dCurrssUJr47m7r5r2H3X0Tb+cbk X-Received: by 10.182.98.230 with SMTP id el6mr2255591obb.10.1394020368337; Wed, 05 Mar 2014 03:52:48 -0800 (PST) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.140.106.165 with SMTP id e34ls260769qgf.29.gmail; Wed, 05 Mar 2014 03:52:48 -0800 (PST) X-Received: by 10.220.106.84 with SMTP id w20mr4256673vco.18.1394020368236; Wed, 05 Mar 2014 03:52:48 -0800 (PST) Received: from mail-ve0-f171.google.com (mail-ve0-f171.google.com [209.85.128.171]) by mx.google.com with ESMTPS id fb12si602723veb.128.2014.03.05.03.52.48 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 05 Mar 2014 03:52:48 -0800 (PST) Received-SPF: neutral (google.com: 209.85.128.171 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) client-ip=209.85.128.171; Received: by mail-ve0-f171.google.com with SMTP id cz12so931894veb.30 for ; Wed, 05 Mar 2014 03:52:48 -0800 (PST) X-Received: by 10.58.186.132 with SMTP id fk4mr37011vec.9.1394020368154; Wed, 05 Mar 2014 03:52:48 -0800 (PST) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patch@linaro.org Received: by 10.220.78.9 with SMTP id i9csp12611vck; Wed, 5 Mar 2014 03:52:47 -0800 (PST) X-Received: by 10.68.36.41 with SMTP id n9mr6102412pbj.99.1394020367201; Wed, 05 Mar 2014 03:52:47 -0800 (PST) Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id vo7si2200603pab.335.2014.03.05.03.52.46; Wed, 05 Mar 2014 03:52:46 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756562AbaCELwd (ORCPT + 26 others); Wed, 5 Mar 2014 06:52:33 -0500 Received: from fw-tnat.cambridge.arm.com ([217.140.96.21]:51502 "EHLO cam-smtp0.cambridge.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755737AbaCELtj (ORCPT ); Wed, 5 Mar 2014 06:49:39 -0500 Received: from e106497-lin.cambridge.arm.com (e106497-lin.cambridge.arm.com [10.1.195.170]) by cam-smtp0.cambridge.arm.com (8.13.8/8.13.8) with ESMTP id s25Bmvb9028509; Wed, 5 Mar 2014 11:48:58 GMT From: Liviu Dudau To: linux-pci , Bjorn Helgaas , Catalin Marinas , Will Deacon , linaro-kernel Cc: Benjamin Herrenschmidt , LKML , "devicetree@vger.kernel.org" , LAKML , Tanmay Inamdar , Arnd Bergmann Subject: [PATCH v6 1/6] pci: Introduce pci_register_io_range() helper function. Date: Wed, 5 Mar 2014 11:48:52 +0000 Message-Id: <1394020137-1830-2-git-send-email-Liviu.Dudau@arm.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1394020137-1830-1-git-send-email-Liviu.Dudau@arm.com> References: <1394020137-1830-1-git-send-email-Liviu.Dudau@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: liviu.dudau@arm.com X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.128.171 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Some architectures do not share x86 simple view of the I/O space and instead use a range of addresses that map to external devices. For PCI, these ranges can be expressed by OF bindings in a device tree file. Introduce a pci_register_io_range() helper function that can be used by the architecture code to keep track of the io ranges described by the PCI bindings. Signed-off-by: Liviu Dudau Tested-by: Tanmay Inamdar Acked-by: Grant Likely --- drivers/of/address.c | 5 +++++ include/linux/of_address.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/of/address.c b/drivers/of/address.c index 1a54f1f..d1bb30f 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -619,6 +619,11 @@ const __be32 *of_get_address(struct device_node *dev, int index, u64 *size, } EXPORT_SYMBOL(of_get_address); +int __weak pci_register_io_range(phys_addr_t addr, resource_size_t size) +{ + return 0; +} + unsigned long __weak pci_address_to_pio(phys_addr_t address) { if (address > IO_SPACE_LIMIT) diff --git a/include/linux/of_address.h b/include/linux/of_address.h index 5f6ed6b..40c418d 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -56,6 +56,7 @@ extern void __iomem *of_iomap(struct device_node *device, int index); extern const __be32 *of_get_address(struct device_node *dev, int index, u64 *size, unsigned int *flags); +extern int pci_register_io_range(phys_addr_t addr, resource_size_t size); extern unsigned long pci_address_to_pio(phys_addr_t addr); extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,