From patchwork Mon May 30 13:32:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yongji Xie X-Patchwork-Id: 627818 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 3rJHkr1tP0z9t7W for ; Mon, 30 May 2016 23:38:28 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933237AbcE3NiU (ORCPT ); Mon, 30 May 2016 09:38:20 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:65431 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933158AbcE3NiC (ORCPT ); Mon, 30 May 2016 09:38:02 -0400 Received: from pps.filterd (m0049461.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u4UDY3kD026717 for ; Mon, 30 May 2016 09:38:01 -0400 Message-Id: <201605301338.u4UDY3kD026717@mx0a-001b2d01.pphosted.com> Received: from e28smtp05.in.ibm.com (e28smtp05.in.ibm.com [125.16.236.5]) by mx0a-001b2d01.pphosted.com with ESMTP id 238jhvp7q2-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 30 May 2016 09:38:01 -0400 Received: from localhost by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 30 May 2016 19:07:54 +0530 X-IBM-Helo: d28dlp01.in.ibm.com X-IBM-MailFrom: xyjxie@linux.vnet.ibm.com X-IBM-RcptTo: kvm@vger.kernel.org; linux-kernel@vger.kernel.org; linux-pci@vger.kernel.org Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 5D2D6E005B; Mon, 30 May 2016 19:11:16 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay02.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u4UDbmiG20840926; Mon, 30 May 2016 19:07:49 +0530 Received: from d28av01.in.ibm.com (localhost [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u4UDbgR6012454; Mon, 30 May 2016 19:07:52 +0530 Received: from localhost (chinaltcdragon.cn.ibm.com [9.186.9.18]) by d28av01.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u4UDbeRV012380; Mon, 30 May 2016 19:07:41 +0530 From: Yongji Xie To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org Cc: alex.williamson@redhat.com, bhelgaas@google.com, aik@ozlabs.ru, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, joro@8bytes.org, warrier@linux.vnet.ibm.com, zhong@linux.vnet.ibm.com, nikunj@linux.vnet.ibm.com, eric.auger@linaro.org, will.deacon@arm.com, gwshan@linux.vnet.ibm.com, alistair@popple.id.au, ruscur@russell.cc, kevin.tian@intel.com, David.Laight@ACULAB.COM Subject: [PATCH v2 5/6] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for IODA host bridge Date: Mon, 30 May 2016 21:32:12 +0800 X-Mailer: git-send-email 1.7.1 In-Reply-To: <1464615133-12050-1-git-send-email-xyjxie@linux.vnet.ibm.com> References: <1464615133-12050-1-git-send-email-xyjxie@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16053013-0016-0000-0000-000002921A0C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16053013-0017-0000-0000-0000240425F5 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-05-30_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=82 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1605300165 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Any IODA host bridge have the capability of IRQ remapping. So we set PCI_BUS_FLAGS_MSI_REMAP when this kind of host birdge is detected. Signed-off-by: Yongji Xie Reviewed-by: Alexey Kardashevskiy --- arch/powerpc/platforms/powernv/pci-ioda.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index c5baaf3..9011268 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -3094,6 +3094,12 @@ static void pnv_pci_ioda_fixup(void) pnv_npu_ioda_fixup(); } +int pnv_pci_ioda_root_bridge_prepare(struct pci_host_bridge *bridge) +{ + bridge->bus->bus_flags |= PCI_BUS_FLAGS_MSI_REMAP; + return 0; +} + /* * Returns the alignment for I/O or memory windows for P2P * bridges. That actually depends on how PEs are segmented. @@ -3395,6 +3401,8 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, */ ppc_md.pcibios_fixup = pnv_pci_ioda_fixup; + ppc_md.pcibios_root_bridge_prepare = pnv_pci_ioda_root_bridge_prepare; + if (phb->type == PNV_PHB_NPU) hose->controller_ops = pnv_npu_ioda_controller_ops; else