From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lu Baolu Subject: [RFC PATCH 07/10] iommu/vt-d: Add set_bus iommu ops Date: Sun, 22 Jul 2018 14:09:30 +0800 Message-ID: <1532239773-15325-8-git-send-email-baolu.lu@linux.intel.com> References: <1532239773-15325-1-git-send-email-baolu.lu@linux.intel.com> Return-path: In-Reply-To: <1532239773-15325-1-git-send-email-baolu.lu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Joerg Roedel , David Woodhouse , Alex Williamson , Kirti Wankhede Cc: ashok.raj@intel.com, sanjay.k.kumar@intel.com, jacob.jun.pan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, peterx@redhat.com, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lu Baolu , Jacob Pan List-Id: iommu@lists.linux-foundation.org This specifies the Intel IOMMU specific set_bus operation. Cc: Ashok Raj Cc: Jacob Pan Cc: Kevin Tian Cc: Liu Yi L Signed-off-by: Sanjay Kumar Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index b6e9ea8..de36292 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5346,6 +5346,23 @@ static struct iommu_group *intel_iommu_device_group(struct device *dev) return ERR_PTR(-EINVAL); } +static int intel_iommu_set_bus(struct bus_type *bus, struct iommu_device *idev) +{ + struct intel_iommu *iommu; + + iommu = container_of(idev, struct intel_iommu, iommu); + if (strcmp(bus->name, "mdev")) + return -EINVAL; + + if (!sm_supported(iommu)) + return -ENODEV; + + bus_set_iommu(bus, &intel_iommu_ops); + bus_register_notifier(bus, &device_nb); + + return 0; +} + #ifdef CONFIG_INTEL_IOMMU_SVM int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct intel_svm_dev *sdev) { @@ -5440,6 +5457,7 @@ const struct iommu_ops intel_iommu_ops = { .remove_device = intel_iommu_remove_device, .get_resv_regions = intel_iommu_get_resv_regions, .put_resv_regions = intel_iommu_put_resv_regions, + .set_bus = intel_iommu_set_bus, .device_group = intel_iommu_device_group, .pgsize_bitmap = INTEL_IOMMU_PGSIZES, }; -- 2.7.4