From patchwork Wed Jul 25 01:49:52 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 173093 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 073762C0092 for ; Wed, 25 Jul 2012 11:50:21 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753967Ab2GYBuU (ORCPT ); Tue, 24 Jul 2012 21:50:20 -0400 Received: from e31.co.us.ibm.com ([32.97.110.149]:60748 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754418Ab2GYBuT (ORCPT ); Tue, 24 Jul 2012 21:50:19 -0400 Received: from /spool/local by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 24 Jul 2012 19:50:17 -0600 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id D96E719D8039 for ; Wed, 25 Jul 2012 01:50:13 +0000 (WET) Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q6P1oGe7156594 for ; Tue, 24 Jul 2012 19:50:16 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q6P1o9vt011419 for ; Tue, 24 Jul 2012 19:50:15 -0600 Received: from shangw (shangw.cn.ibm.com [9.125.213.201]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with SMTP id q6P1o3xt010551; Tue, 24 Jul 2012 19:50:04 -0600 Received: by shangw (Postfix, from userid 1000) id E4055302DA1; Wed, 25 Jul 2012 09:50:02 +0800 (CST) From: Gavin Shan To: linux-pci@vger.kernel.org Cc: bhelgaas@google.com, benh@kernel.crashing.org, linuxram@us.ibm.com, Gavin Shan , Yinghai Lu Subject: [PATCH 3/8] fiddle with conversion of pci and CPU address Date: Wed, 25 Jul 2012 09:49:52 +0800 Message-Id: <1343180997-9483-4-git-send-email-shangw@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1343180997-9483-1-git-send-email-shangw@linux.vnet.ibm.com> References: <1343180997-9483-1-git-send-email-shangw@linux.vnet.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12072501-7282-0000-0000-00000B45BA18 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The patch fiddles with the those functions used to do conversion between PCI and CPU address. More specificly, 2 functions are involved: pcibios_bus_to_resource() and pcibios_resource_to_bus() Signed-off-by: Yinghai Lu Signed-off-by: Gavin Shan --- drivers/pci/host-bridge.c | 24 +++++++++++++++++++----- include/linux/pci.h | 5 ++++- 2 files changed, 23 insertions(+), 6 deletions(-) diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index fc16357..abcf053 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -37,10 +37,10 @@ static bool resource_contains(struct resource *res1, struct resource *res2) return res1->start <= res2->start && res1->end >= res2->end; } -void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, - struct resource *res) +void __pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, + struct resource *res) { - struct pci_host_bridge *bridge = find_pci_host_bridge(dev->bus); + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); struct pci_host_bridge_window *window; resource_size_t offset = 0; @@ -57,6 +57,13 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, region->start = res->start - offset; region->end = res->end - offset; } + +void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, + struct resource *res) +{ + __pcibios_resource_to_bus(dev->bus, region, res); +} + EXPORT_SYMBOL(pcibios_resource_to_bus); static bool region_contains(struct pci_bus_region *region1, @@ -65,10 +72,10 @@ static bool region_contains(struct pci_bus_region *region1, return region1->start <= region2->start && region1->end >= region2->end; } -void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, struct pci_bus_region *region) { - struct pci_host_bridge *bridge = find_pci_host_bridge(dev->bus); + struct pci_host_bridge *bridge = find_pci_host_bridge(bus); struct pci_host_bridge_window *window; resource_size_t offset = 0; @@ -90,4 +97,11 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, res->start = region->start + offset; res->end = region->end + offset; } + +void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, + struct pci_bus_region *region) +{ + __pcibios_bus_to_resource(dev->bus, res, region); +} + EXPORT_SYMBOL(pcibios_bus_to_resource); diff --git a/include/linux/pci.h b/include/linux/pci.h index d8c379d..9acea4b 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -654,9 +654,12 @@ void pcibios_update_irq(struct pci_dev *, int irq); void pci_fixup_cardbus(struct pci_bus *); /* Generic PCI functions used internally */ - +void __pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, + struct resource *res); void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, struct resource *res); +void __pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, + struct pci_bus_region *region); void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, struct pci_bus_region *region); void pcibios_scan_specific_bus(int busn);