From patchwork Wed May 23 02:34:03 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hiroo Matsumoto X-Patchwork-Id: 160769 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 C4C07B6F9F for ; Wed, 23 May 2012 12:31:21 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755587Ab2EWCbF (ORCPT ); Tue, 22 May 2012 22:31:05 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:54115 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755359Ab2EWCbD (ORCPT ); Tue, 22 May 2012 22:31:03 -0400 Received: from m4.gw.fujitsu.co.jp (unknown [10.0.50.74]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 8EF563EE0B5 for ; Wed, 23 May 2012 11:31:02 +0900 (JST) Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 75E8545DE55 for ; Wed, 23 May 2012 11:31:02 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 5BAC445DE4F for ; Wed, 23 May 2012 11:31:02 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 4E729E08002 for ; Wed, 23 May 2012 11:31:02 +0900 (JST) Received: from m0001.s.css.fujitsu.com (m0001.s.css.fujitsu.com [10.23.4.186]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 01F7A1DB803F for ; Wed, 23 May 2012 11:31:02 +0900 (JST) Received: from m0001.css.fujitsu.com (m0001 [127.0.0.1]) by m0001.s.css.fujitsu.com (Postfix) with ESMTP id E753E10156A; Wed, 23 May 2012 11:31:01 +0900 (JST) Received: from [127.0.0.1] (ubi135.utsfd.cs.fujitsu.co.jp [10.24.19.135]) by m0001.s.css.fujitsu.com (Postfix) with ESMTP id CC0D21011CC; Wed, 23 May 2012 11:31:01 +0900 (JST) X-SecurityPolicyCheck: OK by SHieldMailChecker v1.5.1 Message-ID: <4FBC4C9B.3030309@jp.fujitsu.com> Date: Wed, 23 May 2012 11:34:03 +0900 From: Hiroo Matsumoto User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: Bjorn Helgaas CC: Kenji Kaneshige , jbarnes@virtuousgeek.org, benh@kernel.crashing.org, linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 2/2] microblaze/PCI: Add pcibios_device_change_notifier for microblaze Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org pcibios_setup_bus_devices which sets DMA and IRQs of PCI device is called only when boot, so DMA and IRQs of PCI device will not set when hotplug. This patch adds pcibios_device_change_notifier which sets DMA and IRQs of PCI device when PCI device adds, so DMA and IRQs of PCI device will be set when boot and hotplug. Signed-off-by: Hiroo MATSUMOTO --- arch/microblaze/include/asm/pci.h | 2 +- arch/microblaze/pci/pci-common.c | 67 +++++++++++++++++++++--------------- 2 files changed, 40 insertions(+), 29 deletions(-) diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h index 0331376..8d11277 100644 --- a/arch/microblaze/include/asm/pci.h +++ b/arch/microblaze/include/asm/pci.h @@ -149,8 +149,8 @@ extern void pci_resource_to_user(const struct pci_dev *dev, int bar, const struct resource *rsrc, resource_size_t *start, resource_size_t *end); -extern void pcibios_setup_bus_devices(struct pci_bus *bus); extern void pcibios_setup_bus_self(struct pci_bus *bus); +extern void pcibios_setup_bus_notifier(void); /* This part of code was originally in xilinx-pci.h */ #ifdef CONFIG_PCI_XILINX diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c index 85f2ac1..bb28ede 100644 --- a/arch/microblaze/pci/pci-common.c +++ b/arch/microblaze/pci/pci-common.c @@ -1063,31 +1063,6 @@ void __devinit pcibios_setup_bus_self(struct pci_bus *bus) pcibios_fixup_bridge(bus); } -void __devinit pcibios_setup_bus_devices(struct pci_bus *bus) -{ - struct pci_dev *dev; - - pr_debug("PCI: Fixup bus devices %d (%s)\n", - bus->number, bus->self ? pci_name(bus->self) : "PHB"); - - list_for_each_entry(dev, &bus->devices, bus_list) { - /* Setup OF node pointer in archdata */ - dev->dev.of_node = pci_device_to_OF_node(dev); - - /* Fixup NUMA node as it may not be setup yet by the generic - * code and is needed by the DMA init - */ - set_dev_node(&dev->dev, pcibus_to_node(dev->bus)); - - /* Hook up default DMA ops */ - set_dma_ops(&dev->dev, pci_dma_ops); - dev->dev.archdata.dma_data = (void *)PCI_DRAM_OFFSET; - - /* Read default IRQs and fixup if necessary */ - pci_read_irq_line(dev); - } -} - void __devinit pcibios_fixup_bus(struct pci_bus *bus) { /* When called from the generic PCI probe, read PCI<->PCI bridge @@ -1099,9 +1074,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus) /* Now fixup the bus bus */ pcibios_setup_bus_self(bus); - - /* Now fixup devices on that bus */ - pcibios_setup_bus_devices(bus); } EXPORT_SYMBOL(pcibios_fixup_bus); @@ -1604,6 +1576,43 @@ static void __devinit pcibios_scan_phb(struct pci_controller *hose) hose->last_busno = bus->subordinate; } +static int pcibios_device_change_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct pci_dev *dev = to_pci_dev(data); + + switch (action) { + case BUS_NOTIFY_ADD_DEVICE: + /* Setup OF node pointer in archdata */ + dev->dev.of_node = pci_device_to_OF_node(dev); + + /* Fixup NUMA node as it may not be setup yet by the generic + * code and is needed by the DMA init + */ + set_dev_node(&dev->dev, pcibus_to_node(dev->bus)); + + /* Hook up default DMA ops */ + set_dma_ops(&dev->dev, pci_dma_ops); + dev->dev.archdata.dma_data = (void *)PCI_DRAM_OFFSET; + + /* Read default IRQs and fixup if necessary */ + pci_read_irq_line(dev); + + break; + } + + return 0; +} + +static struct notifier_block device_nb = { + .notifier_call = pcibios_device_change_notifier, +}; + +void __devinit pcibios_setup_bus_notifier(void) +{ + bus_register_notifier(&pci_bus_type, &device_nb); +} + static int __init pcibios_init(void) { struct pci_controller *hose, *tmp; @@ -1611,6 +1620,8 @@ static int __init pcibios_init(void) printk(KERN_INFO "PCI: Probing PCI hardware\n"); + pcibios_setup_bus_notifier(); + /* Scan all of the recorded PCI controllers. */ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { hose->last_busno = 0xff;