From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp02.au.ibm.com (e23smtp02.au.ibm.com [202.81.31.144]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id E529B1A048B for ; Mon, 7 Mar 2016 18:50:39 +1100 (AEDT) Received: from localhost by e23smtp02.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 7 Mar 2016 17:50:38 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id DA2843578056 for ; Mon, 7 Mar 2016 18:50:34 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u277oPmI59834490 for ; Mon, 7 Mar 2016 18:50:34 +1100 Received: from d23av02.au.ibm.com (localhost [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u277o0T5024207 for ; Mon, 7 Mar 2016 18:50:01 +1100 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> 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> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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