Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933785AbcJLNeP (ORCPT ); Wed, 12 Oct 2016 09:34:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47550 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933756AbcJLNdf (ORCPT ); Wed, 12 Oct 2016 09:33:35 -0400 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, christoffer.dall@linaro.org, marc.zyngier@arm.com, robin.murphy@arm.com, alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net, linux-arm-kernel@lists.infradead.org Cc: kvm@vger.kernel.org, drjones@redhat.com, linux-kernel@vger.kernel.org, Bharat.Bhushan@freescale.com, pranav.sawargaonkar@gmail.com, p.fedin@samsung.com, iommu@lists.linux-foundation.org, Jean-Philippe.Brucker@arm.com, yehuday@marvell.com, Manish.Jaggi@caviumnetworks.com Subject: [PATCH v14 09/16] vfio: Introduce a vfio_dma type field Date: Wed, 12 Oct 2016 13:22:17 +0000 Message-Id: <1476278544-3397-10-git-send-email-eric.auger@redhat.com> In-Reply-To: <1476278544-3397-1-git-send-email-eric.auger@redhat.com> References: <1476278544-3397-1-git-send-email-eric.auger@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Wed, 12 Oct 2016 13:23:15 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1735 Lines: 55 We introduce a vfio_dma type since we will need to discriminate different types of dma slots: - VFIO_IOVA_USER: IOVA region used to map user vaddr - VFIO_IOVA_RESERVED_MSI: IOVA region reserved to map MSI doorbells Signed-off-by: Eric Auger Acked-by: Alex Williamson --- v9 -> v10: - renamed VFIO_IOVA_RESERVED into VFIO_IOVA_RESERVED_MSI - explicitly set type to VFIO_IOVA_USER on dma_map v6 -> v7: - add VFIO_IOVA_ANY - do not introduce yet any VFIO_IOVA_RESERVED handling --- drivers/vfio/vfio_iommu_type1.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 2ba1942..a9f8b93 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -53,6 +53,12 @@ module_param_named(disable_hugepages, MODULE_PARM_DESC(disable_hugepages, "Disable VFIO IOMMU support for IOMMU hugepages."); +enum vfio_iova_type { + VFIO_IOVA_USER = 0, /* standard IOVA used to map user vaddr */ + VFIO_IOVA_RESERVED_MSI, /* reserved to map MSI doorbells */ + VFIO_IOVA_ANY, /* matches any IOVA type */ +}; + struct vfio_iommu { struct list_head domain_list; struct mutex lock; @@ -75,6 +81,7 @@ struct vfio_dma { unsigned long vaddr; /* Process virtual addr */ size_t size; /* Map size (bytes) */ int prot; /* IOMMU_READ/WRITE */ + enum vfio_iova_type type; /* type of IOVA */ }; struct vfio_group { @@ -607,6 +614,7 @@ static int vfio_dma_do_map(struct vfio_iommu *iommu, dma->iova = iova; dma->vaddr = vaddr; dma->prot = prot; + dma->type = VFIO_IOVA_USER; /* Insert zero-sized and grow as we map chunks of it */ vfio_link_dma(iommu, dma); -- 1.9.1