From: Liu Yi L <yi.l.liu@intel.com>
To: qemu-devel@nongnu.org, mst@redhat.com, pbonzini@redhat.com,
alex.williamson@redhat.com, peterx@redhat.com
Cc: eric.auger@redhat.com, david@gibson.dropbear.id.au,
tianyu.lan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com,
jun.j.tian@intel.com, yi.y.sun@intel.com, kvm@vger.kernel.org,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Yi Sun <yi.y.sun@linux.intel.com>
Subject: [RFC v1 05/18] vfio/pci: add pasid alloc/free implementation
Date: Fri, 5 Jul 2019 19:01:38 +0800 [thread overview]
Message-ID: <1562324511-2910-6-git-send-email-yi.l.liu@intel.com> (raw)
In-Reply-To: <1562324511-2910-1-git-send-email-yi.l.liu@intel.com>
This patch adds vfio implementation PCIPASIDOps.alloc_pasid/free_pasid().
These two functions are used to propagate guest pasid allocation and
free requests to host via vfio container ioctl.
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Yi Sun <yi.y.sun@linux.intel.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
---
hw/vfio/pci.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index ce3fe96..ab184ad 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2690,6 +2690,65 @@ static void vfio_unregister_req_notifier(VFIOPCIDevice *vdev)
vdev->req_enabled = false;
}
+static int vfio_pci_device_request_pasid_alloc(PCIBus *bus,
+ int32_t devfn,
+ uint32_t min_pasid,
+ uint32_t max_pasid)
+{
+ PCIDevice *pdev = bus->devices[devfn];
+ VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev);
+ VFIOContainer *container = vdev->vbasedev.group->container;
+ struct vfio_iommu_type1_pasid_request req;
+ unsigned long argsz;
+ int pasid;
+
+ argsz = sizeof(req);
+ req.argsz = argsz;
+ req.flag = VFIO_IOMMU_PASID_ALLOC;
+ req.min_pasid = min_pasid;
+ req.max_pasid = max_pasid;
+
+ rcu_read_lock();
+ pasid = ioctl(container->fd, VFIO_IOMMU_PASID_REQUEST, &req);
+ if (pasid < 0) {
+ error_report("vfio_pci_device_request_pasid_alloc:"
+ " request failed, contanier: %p", container);
+ }
+ rcu_read_unlock();
+ return pasid;
+}
+
+static int vfio_pci_device_request_pasid_free(PCIBus *bus,
+ int32_t devfn,
+ uint32_t pasid)
+{
+ PCIDevice *pdev = bus->devices[devfn];
+ VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev);
+ VFIOContainer *container = vdev->vbasedev.group->container;
+ struct vfio_iommu_type1_pasid_request req;
+ unsigned long argsz;
+ int ret = 0;
+
+ argsz = sizeof(req);
+ req.argsz = argsz;
+ req.flag = VFIO_IOMMU_PASID_FREE;
+ req.pasid = pasid;
+
+ rcu_read_lock();
+ ret = ioctl(container->fd, VFIO_IOMMU_PASID_REQUEST, &req);
+ if (ret != 0) {
+ error_report("vfio_pci_device_request_pasid_free:"
+ " request failed, contanier: %p", container);
+ }
+ rcu_read_unlock();
+ return ret;
+}
+
+static PCIPASIDOps vfio_pci_pasid_ops = {
+ .alloc_pasid = vfio_pci_device_request_pasid_alloc,
+ .free_pasid = vfio_pci_device_request_pasid_free,
+};
+
static void vfio_realize(PCIDevice *pdev, Error **errp)
{
VFIOPCIDevice *vdev = PCI_VFIO(pdev);
@@ -2991,6 +3050,8 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
vfio_register_req_notifier(vdev);
vfio_setup_resetfn_quirk(vdev);
+ pci_setup_pasid_ops(pdev, &vfio_pci_pasid_ops);
+
return;
out_teardown:
--
2.7.4
next prev parent reply other threads:[~2019-07-06 11:19 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-05 11:01 [RFC v1 00/18] intel_iommu: expose Shared Virtual Addressing to VM Liu Yi L
2019-07-05 11:01 ` [RFC v1 01/18] linux-headers: import iommu.h from kernel Liu Yi L
2019-07-05 11:01 ` [RFC v1 02/18] linux-headers: import vfio.h " Liu Yi L
2019-07-09 1:58 ` Peter Xu
2019-07-09 8:37 ` Auger Eric
2019-07-10 12:31 ` Liu, Yi L
2019-07-10 12:29 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 03/18] hw/pci: introduce PCIPASIDOps to PCIDevice Liu Yi L
2019-07-09 2:12 ` Peter Xu
2019-07-09 10:41 ` Auger Eric
2019-07-10 11:08 ` Liu, Yi L
2019-07-11 3:51 ` david
2019-07-11 7:13 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 04/18] intel_iommu: add "sm_model" option Liu Yi L
2019-07-09 2:15 ` Peter Xu
2019-07-10 12:14 ` Liu, Yi L
2019-07-11 1:03 ` Peter Xu
2019-07-11 6:25 ` Liu, Yi L
2019-07-05 11:01 ` Liu Yi L [this message]
2019-07-09 2:23 ` [RFC v1 05/18] vfio/pci: add pasid alloc/free implementation Peter Xu
2019-07-10 12:16 ` Liu, Yi L
2019-07-15 2:55 ` David Gibson
2019-07-16 10:25 ` Liu, Yi L
2019-07-17 3:06 ` David Gibson
2019-07-22 7:02 ` Liu, Yi L
2019-07-23 3:57 ` David Gibson
2019-07-24 4:57 ` Liu, Yi L
2019-07-24 9:33 ` Auger Eric
2019-07-25 3:40 ` David Gibson
2019-07-26 5:18 ` Liu, Yi L
2019-08-02 7:36 ` Auger Eric
2019-07-05 11:01 ` [RFC v1 06/18] intel_iommu: support virtual command emulation and pasid request Liu Yi L
2019-07-09 3:19 ` Peter Xu
2019-07-10 11:51 ` Liu, Yi L
2019-07-11 1:13 ` Peter Xu
2019-07-11 6:59 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 07/18] hw/pci: add pci_device_bind/unbind_gpasid Liu Yi L
2019-07-09 8:37 ` Auger Eric
2019-07-10 12:18 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 08/18] vfio/pci: add vfio bind/unbind_gpasid implementation Liu Yi L
2019-07-09 8:37 ` Auger Eric
2019-07-10 12:30 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 09/18] intel_iommu: process pasid cache invalidation Liu Yi L
2019-07-09 4:47 ` Peter Xu
2019-07-11 6:22 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 10/18] intel_iommu: tag VTDAddressSpace instance with PASID Liu Yi L
2019-07-09 6:12 ` Peter Xu
2019-07-11 7:24 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 11/18] intel_iommu: create VTDAddressSpace per BDF+PASID Liu Yi L
2019-07-09 6:39 ` Peter Xu
2019-07-11 8:13 ` Liu, Yi L
2019-07-05 11:01 ` [RFC v1 12/18] intel_iommu: bind/unbind guest page table to host Liu Yi L
2019-07-05 11:01 ` [RFC v1 13/18] intel_iommu: flush pasid cache after a DSI context cache flush Liu Yi L
2019-07-05 11:01 ` [RFC v1 14/18] hw/pci: add flush_pasid_iotlb() in PCIPASIDOps Liu Yi L
2019-07-05 11:01 ` [RFC v1 15/18] vfio/pci: adds support for PASID-based iotlb flush Liu Yi L
2019-07-05 11:01 ` [RFC v1 16/18] intel_iommu: add PASID-based iotlb invalidation support Liu Yi L
2019-07-05 11:01 ` [RFC v1 17/18] intel_iommu: propagate PASID-based iotlb flush to host Liu Yi L
2019-07-05 11:01 ` [RFC v1 18/18] intel_iommu: do not passdown pasid bind for PASID #0 Liu Yi L
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