From: Zhenzhong Duan <zhenzhong.duan@intel.com>
To: qemu-devel@nongnu.org
Cc: alex.williamson@redhat.com, clg@redhat.com,
eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com,
jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com,
joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com,
kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com,
Zhenzhong Duan <zhenzhong.duan@intel.com>,
Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Subject: [PATCH v5 09/19] vfio/iommufd: Implement HostIOMMUDeviceClass::realize() handler
Date: Wed, 8 May 2024 17:03:44 +0800 [thread overview]
Message-ID: <20240508090354.1815561-10-zhenzhong.duan@intel.com> (raw)
In-Reply-To: <20240508090354.1815561-1-zhenzhong.duan@intel.com>
It calls iommufd_backend_get_device_info() to get host IOMMU
related information and translate it into HostIOMMUDeviceCaps
for query with .get_cap().
Introduce macro VTD_MGAW_FROM_CAP to get MGAW which equals to
(aw_bits - 1).
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
include/hw/i386/intel_iommu.h | 1 +
hw/vfio/iommufd.c | 37 +++++++++++++++++++++++++++++++++++
2 files changed, 38 insertions(+)
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
index 7fa0a695c8..7d694b0813 100644
--- a/include/hw/i386/intel_iommu.h
+++ b/include/hw/i386/intel_iommu.h
@@ -47,6 +47,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(IntelIOMMUState, INTEL_IOMMU_DEVICE)
#define VTD_HOST_AW_48BIT 48
#define VTD_HOST_ADDRESS_WIDTH VTD_HOST_AW_39BIT
#define VTD_HAW_MASK(aw) ((1ULL << (aw)) - 1)
+#define VTD_MGAW_FROM_CAP(cap) ((cap >> 16) & 0x3fULL)
#define DMAR_REPORT_F_INTR (1)
diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index e4a507d55c..9d2e95e20e 100644
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -25,6 +25,7 @@
#include "qemu/cutils.h"
#include "qemu/chardev_open.h"
#include "pci.h"
+#include "hw/i386/intel_iommu_internal.h"
static int iommufd_cdev_map(const VFIOContainerBase *bcontainer, hwaddr iova,
ram_addr_t size, void *vaddr, bool readonly)
@@ -619,6 +620,41 @@ static void vfio_iommu_iommufd_class_init(ObjectClass *klass, void *data)
vioc->pci_hot_reset = iommufd_cdev_pci_hot_reset;
};
+static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque,
+ Error **errp)
+{
+ VFIODevice *vdev = opaque;
+ HostIOMMUDeviceCaps *caps = &hiod->caps;
+ enum iommu_hw_info_type type;
+ union {
+ struct iommu_hw_info_vtd vtd;
+ } data;
+
+ if (!iommufd_backend_get_device_info(vdev->iommufd, vdev->devid,
+ &type, &data, sizeof(data), errp)) {
+ return false;
+ }
+
+ caps->type = type;
+
+ switch (type) {
+ case IOMMU_HW_INFO_TYPE_INTEL_VTD:
+ caps->aw_bits = VTD_MGAW_FROM_CAP(data.vtd.cap_reg) + 1;
+ break;
+ case IOMMU_HW_INFO_TYPE_NONE:
+ break;
+ }
+
+ return true;
+}
+
+static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
+{
+ HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
+
+ hiodc->realize = hiod_iommufd_vfio_realize;
+};
+
static const TypeInfo types[] = {
{
.name = TYPE_VFIO_IOMMU_IOMMUFD,
@@ -627,6 +663,7 @@ static const TypeInfo types[] = {
}, {
.name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO,
.parent = TYPE_HOST_IOMMU_DEVICE_IOMMUFD,
+ .class_init = hiod_iommufd_vfio_class_init,
}
};
--
2.34.1
next prev parent reply other threads:[~2024-05-08 9:10 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 9:03 [PATCH v5 00/19] Add a host IOMMU device abstraction to check with vIOMMU Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 01/19] backends: Introduce HostIOMMUDevice abstract Zhenzhong Duan
2024-05-13 9:29 ` Cédric Le Goater
2024-05-13 10:28 ` Duan, Zhenzhong
2024-05-27 13:15 ` Cédric Le Goater
2024-05-08 9:03 ` [PATCH v5 02/19] vfio/container: Introduce TYPE_HOST_IOMMU_DEVICE_LEGACY_VFIO device Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 03/19] backends/iommufd: Introduce abstract TYPE_HOST_IOMMU_DEVICE_IOMMUFD device Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 04/19] vfio/iommufd: Introduce TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO device Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 05/19] backends/host_iommu_device: Introduce HostIOMMUDeviceCaps Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 06/19] range: Introduce range_get_last_bit() Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 07/19] vfio/container: Implement HostIOMMUDeviceClass::realize() handler Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 08/19] backends/iommufd: Introduce helper function iommufd_backend_get_device_info() Zhenzhong Duan
2024-05-08 9:03 ` Zhenzhong Duan [this message]
2024-05-08 9:03 ` [PATCH v5 10/19] vfio/container: Implement HostIOMMUDeviceClass::get_cap() handler Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 11/19] backends/iommufd: " Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 12/19] vfio: Introduce VFIOIOMMUClass::hiod_typename attribute Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 13/19] vfio: Create host IOMMU device instance Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 14/19] hw/pci: Introduce helper function pci_device_get_iommu_bus_devfn() Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 15/19] hw/pci: Introduce pci_device_[set|unset]_iommu_device() Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 16/19] vfio/pci: Pass HostIOMMUDevice to vIOMMU Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 17/19] intel_iommu: Extract out vtd_cap_init() to initialize cap/ecap Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 18/19] intel_iommu: Implement [set|unset]_iommu_device() callbacks Zhenzhong Duan
2024-05-08 9:03 ` [PATCH v5 19/19] intel_iommu: Check compatibility with host IOMMU capabilities Zhenzhong Duan
2024-05-27 13:18 ` Cédric Le Goater
2024-05-28 3:00 ` Duan, Zhenzhong
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