From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932500Ab1JNE2q (ORCPT ); Fri, 14 Oct 2011 00:28:46 -0400 Received: from smtp-out.google.com ([216.239.44.51]:21295 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932433Ab1JNE2i (ORCPT ); Fri, 14 Oct 2011 00:28:38 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=subject:to:from:cc:date:message-id:in-reply-to:references: user-agent:mime-version:content-type: content-transfer-encoding:x-system-of-record; b=cKL5BmkrgTuotg63A5pV5CeFiRenhi9Qt8tRN64ECrt7VblUT4uxuHspChoJqF1WO lJ+fhcuFedKdWTE6qMvQg== Subject: [PATCH v2 17/29] ia64/PCI: convert to pci_create_root_bus() for correct root bus resources To: linux-pci@vger.kernel.org From: Bjorn Helgaas Cc: linux-arch@vger.kernel.org, Tony Luck , linux-kernel@vger.kernel.org Date: Thu, 13 Oct 2011 22:28:33 -0600 Message-ID: <20111014042833.23504.81310.stgit@bhelgaas.mtv.corp.google.com> In-Reply-To: <20111014042142.23504.70417.stgit@bhelgaas.mtv.corp.google.com> References: <20111014042142.23504.70417.stgit@bhelgaas.mtv.corp.google.com> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Convert from pci_create_bus() to pci_create_root_bus(). This way the root bus resources are correct immediately. This fixes the problem of "early" and "header" quirks seeing incorrect root bus resources. We can't use pci_scan_root_bus() because, like x86, ACPI hotplug currently requires pci_bus_add_devices() in a separate host bridge .start() method. CC: Tony Luck Signed-off-by: Bjorn Helgaas --- arch/ia64/pci/pci.c | 39 ++++++++++++++------------------------- 1 files changed, 14 insertions(+), 25 deletions(-) diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index d7e47a9..a7949b5 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -133,6 +133,7 @@ alloc_pci_controller (int seg) struct pci_root_info { struct acpi_device *bridge; struct pci_controller *controller; + struct list_head resources; char *name; }; @@ -314,24 +315,13 @@ static __devinit acpi_status add_window(struct acpi_resource *res, void *data) &window->resource); } - return AE_OK; -} + /* HP's firmware has a hack to work around a Windows bug. + * Ignore these tiny memory ranges */ + if (!((res->flags & IORESOURCE_MEM) && + (res->end - res->start < 16))) + pci_add_resource(&info->resources, &window->resource); -static void __devinit -pcibios_setup_root_windows(struct pci_bus *bus, struct pci_controller *ctrl) -{ - int i; - - pci_bus_remove_resources(bus); - for (i = 0; i < ctrl->windows; i++) { - struct resource *res = &ctrl->window[i].resource; - /* HP's firmware has a hack to work around a Windows bug. - * Ignore these tiny memory ranges */ - if ((res->flags & IORESOURCE_MEM) && - (res->end - res->start < 16)) - continue; - pci_bus_add_resource(bus, res, 0); - } + return AE_OK; } struct pci_bus * __devinit @@ -342,6 +332,7 @@ pci_acpi_scan_root(struct acpi_pci_root *root) int bus = root->secondary.start; struct pci_controller *controller; unsigned int windows = 0; + struct pci_root_info info; struct pci_bus *pbus; char *name; int pxm; @@ -358,11 +349,10 @@ pci_acpi_scan_root(struct acpi_pci_root *root) controller->node = pxm_to_node(pxm); #endif + INIT_LIST_HEAD(&info.resources); acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window, &windows); if (windows) { - struct pci_root_info info; - controller->window = kmalloc_node(sizeof(*controller->window) * windows, GFP_KERNEL, controller->node); @@ -386,9 +376,12 @@ pci_acpi_scan_root(struct acpi_pci_root *root) * should handle the case here, but it appears that IA64 hasn't * such quirk. So we just ignore the case now. */ - pbus = pci_create_bus(NULL, bus, &pci_root_ops, controller, NULL); - if (!pbus) + pbus = pci_create_root_bus(NULL, bus, &pci_root_ops, controller, + &info.resources); + if (!pbus) { + pci_free_resource_list(&info.resources); return NULL; + } pbus->subordinate = pci_scan_child_bus(pbus); return pbus; @@ -506,14 +499,10 @@ pcibios_fixup_bus (struct pci_bus *b) if (b->self) { pci_read_bridge_bases(b); pcibios_fixup_bridge_resources(b->self); - } else { - pcibios_setup_root_windows(b, b->sysdata); } list_for_each_entry(dev, &b->devices, bus_list) pcibios_fixup_device_resources(dev); platform_pci_fixup_bus(b); - - return; } void __devinit