Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752606AbcCGHux (ORCPT ); Mon, 7 Mar 2016 02:50:53 -0500 Received: from e23smtp01.au.ibm.com ([202.81.31.143]:52314 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752574AbcCGHuk (ORCPT ); Mon, 7 Mar 2016 02:50:40 -0500 X-IBM-Helo: d23dlp01.au.ibm.com X-IBM-MailFrom: xyjxie@linux.vnet.ibm.com X-IBM-RcptTo: kvm@vger.kernel.org;linux-doc@vger.kernel.org;linux-kernel@vger.kernel.org;linux-pci@vger.kernel.org From: Yongji Xie To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org Cc: bhelgaas@google.com, corbet@lwn.net, aik@ozlabs.ru, alex.williamson@redhat.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, warrier@linux.vnet.ibm.com, zhong@linux.vnet.ibm.com, nikunj@linux.vnet.ibm.com, Yongji Xie Subject: [RFC PATCH v4 7/7] powerpc/powernv/pci-ioda: Add IOMMU_CAP_INTR_REMAP for IODA host bridge Date: Mon, 7 Mar 2016 15:48:38 +0800 Message-Id: <1457336918-3893-8-git-send-email-xyjxie@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1457336918-3893-1-git-send-email-xyjxie@linux.vnet.ibm.com> References: <1457336918-3893-1-git-send-email-xyjxie@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16030707-1618-0000-0000-0000273CDD0B Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1246 Lines: 45 This patch adds IOMMU_CAP_INTR_REMAP for IODA host bridge so that we can mmap MSI-X table in vfio driver. Signed-off-by: Yongji Xie --- arch/powerpc/platforms/powernv/pci-ioda.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index f90dc04..f01b9ab 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1955,6 +1955,20 @@ static struct iommu_table_ops pnv_ioda2_iommu_ops = { .free = pnv_ioda2_table_free, }; +static bool pnv_ioda_iommu_capable(enum iommu_cap cap) +{ + switch (cap) { + case IOMMU_CAP_INTR_REMAP: + return true; + default: + return false; + } +} + +static struct iommu_ops pnv_ioda_iommu_ops = { + .capable = pnv_ioda_iommu_capable, +}; + static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe, unsigned int base, unsigned int segs) @@ -3078,6 +3092,9 @@ static void pnv_pci_ioda_fixup(void) /* Link NPU IODA tables to their PCI devices. */ pnv_npu_ioda_fixup(); + + /* Add IOMMU_CAP_INTR_REMAP */ + bus_set_iommu(&pci_bus_type, &pnv_ioda_iommu_ops); } /* -- 1.7.9.5