From patchwork Wed Feb 17 03:43:44 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 8334131 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 477E29F2F0 for ; Wed, 17 Feb 2016 03:45:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 776852024C for ; Wed, 17 Feb 2016 03:45:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 992A220279 for ; Wed, 17 Feb 2016 03:45:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933685AbcBQDpm (ORCPT ); Tue, 16 Feb 2016 22:45:42 -0500 Received: from e23smtp04.au.ibm.com ([202.81.31.146]:34936 "EHLO e23smtp04.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933706AbcBQDph (ORCPT ); Tue, 16 Feb 2016 22:45:37 -0500 Received: from localhost by e23smtp04.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 17 Feb 2016 13:45:34 +1000 Received: from d23dlp02.au.ibm.com (202.81.31.213) by e23smtp04.au.ibm.com (202.81.31.210) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Wed, 17 Feb 2016 13:45:32 +1000 X-IBM-Helo: d23dlp02.au.ibm.com X-IBM-MailFrom: gwshan@linux.vnet.ibm.com X-IBM-RcptTo: devicetree@vger.kernel.org;linux-pci@vger.kernel.org Received: from d23relay07.au.ibm.com (d23relay07.au.ibm.com [9.190.26.37]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id D1CA72BB0055; Wed, 17 Feb 2016 14:45:27 +1100 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay07.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u1H3jJpo852320; Wed, 17 Feb 2016 14:45:27 +1100 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u1H3isTU011981; Wed, 17 Feb 2016 14:44:55 +1100 Received: from ozlabs.au.ibm.com (ozlabs.au.ibm.com [9.192.253.14]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u1H3isd0011331; Wed, 17 Feb 2016 14:44:54 +1100 Received: from bran.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) by ozlabs.au.ibm.com (Postfix) with ESMTP id CE5FFA0276; Wed, 17 Feb 2016 14:44:29 +1100 (AEDT) Received: from gwshan (shangw.ozlabs.ibm.com [10.61.2.199]) by bran.ozlabs.ibm.com (Postfix) with ESMTP id C07CEE39C0; Wed, 17 Feb 2016 14:44:29 +1100 (AEDT) Received: by gwshan (Postfix, from userid 1000) id A8529941E93; Wed, 17 Feb 2016 14:44:29 +1100 (AEDT) From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org, benh@kernel.crashing.org, mpe@ellerman.id.au, aik@ozlabs.ru, dja@axtens.net, bhelgaas@google.com, robherring2@gmail.com, grant.likely@linaro.org, Gavin Shan Subject: [PATCH v8 01/45] PCI: Add pcibios_setup_bridge() Date: Wed, 17 Feb 2016 14:43:44 +1100 Message-Id: <1455680668-23298-2-git-send-email-gwshan@linux.vnet.ibm.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1455680668-23298-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1455680668-23298-1-git-send-email-gwshan@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16021703-0013-0000-0000-000002BF0A24 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently, PowerPC PowerNV platform utilizes ppc_md.pcibios_fixup(), which is called for once after PCI probing and resource assignment are completed, to allocate platform required resources for PCI devices: PE#, IO and MMIO mapping, DMA address translation (TCE) table etc. Obviously, it's not hotplug friendly. This adds weak function pcibios_setup_bridge(), which is called by pci_setup_bridge(). PowerPC PowerNV platform will reuse the function to assign above platform required resources to newly plugged PCI devices during PCI hotplug in subsequent patches. Signed-off-by: Gavin Shan Acked-by: Bjorn Helgaas --- drivers/pci/setup-bus.c | 5 +++++ include/linux/pci.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 7796d0a..acda514 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -696,11 +696,16 @@ static void __pci_setup_bridge(struct pci_bus *bus, unsigned long type) pci_write_config_word(bridge, PCI_BRIDGE_CONTROL, bus->bridge_ctl); } +void __weak pcibios_setup_bridge(struct pci_bus *bus, unsigned long type) +{ +} + void pci_setup_bridge(struct pci_bus *bus) { unsigned long type = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH; + pcibios_setup_bridge(bus, type); __pci_setup_bridge(bus, type); } diff --git a/include/linux/pci.h b/include/linux/pci.h index bc435d62..8161c79 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -842,6 +842,7 @@ void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); void pci_stop_root_bus(struct pci_bus *bus); void pci_remove_root_bus(struct pci_bus *bus); void pci_setup_cardbus(struct pci_bus *bus); +void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type); void pci_sort_breadthfirst(void); #define dev_is_pci(d) ((d)->bus == &pci_bus_type) #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))