From patchwork Mon Aug 20 13:46:30 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 178778 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 34AD02C0097 for ; Mon, 20 Aug 2012 23:46:59 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753765Ab2HTNq6 (ORCPT ); Mon, 20 Aug 2012 09:46:58 -0400 Received: from e4.ny.us.ibm.com ([32.97.182.144]:59984 "EHLO e4.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752114Ab2HTNq6 (ORCPT ); Mon, 20 Aug 2012 09:46:58 -0400 Received: from /spool/local by e4.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 20 Aug 2012 09:46:53 -0400 Received: from d01relay03.pok.ibm.com (d01relay03.pok.ibm.com [9.56.227.235]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id E0D9C6E8063 for ; Mon, 20 Aug 2012 09:46:52 -0400 (EDT) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay03.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q7KDkpLf076272 for ; Mon, 20 Aug 2012 09:46:52 -0400 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q7KDkkFJ016224 for ; Mon, 20 Aug 2012 09:46:50 -0400 Received: from shangw ([9.125.27.211]) by d01av01.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id q7KDkgCc016084; Mon, 20 Aug 2012 09:46:43 -0400 Received: by shangw (Postfix, from userid 1000) id 7B0B630288C; Mon, 20 Aug 2012 21:46:40 +0800 (CST) From: Gavin Shan To: linux-pci@vger.kernel.org Cc: bhelgaas@google.com, benh@kernel.crashing.org, weiyang@linux.vnet.ibm.com, linuxram@us.ibm.com, yinghai@kernel.org, Gavin Shan Subject: [PATCH 3/8] pci: fiddle with conversion of pci and CPU address Date: Mon, 20 Aug 2012 21:46:30 +0800 Message-Id: <1345470395-17295-4-git-send-email-shangw@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1345470395-17295-1-git-send-email-shangw@linux.vnet.ibm.com> References: <1345470395-17295-1-git-send-email-shangw@linux.vnet.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12082013-3534-0000-0000-00000BAAAADB 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 5faa831..a47a4d3 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -692,9 +692,12 @@ 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);