1 files changed, 102 insertions, 0 deletions
diff --git a/hw/ppc/spapr_pci_vfio.c b/hw/ppc/spapr_pci_vfio.c
new file mode 100644
index 0000000..d3bddf2
--- /dev/null
+++ b/hw/ppc/spapr_pci_vfio.c
@@ -0,0 +1,102 @@
+/*
+ * QEMU sPAPR PCI host for VFIO
+ *
+ * Copyright (c) 2011-2014 Alexey Kardashevskiy, IBM Corporation.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License,
+ *  or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw/ppc/spapr.h"
+#include "hw/pci-host/spapr.h"
+#include "linux/vfio.h"
+#include "hw/misc/vfio.h"
+
+static Property spapr_phb_vfio_properties[] = {
+    DEFINE_PROP_INT32("iommu", sPAPRPHBVFIOState, iommugroupid, -1),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void spapr_phb_vfio_finish_realize(sPAPRPHBState *sphb, Error **errp)
+{
+    sPAPRPHBVFIOState *svphb = SPAPR_PCI_VFIO_HOST_BRIDGE(sphb);
+    struct vfio_iommu_spapr_tce_info info = { .argsz = sizeof(info) };
+    int ret;
+    sPAPRTCETable *tcet;
+    uint32_t liobn = svphb->phb.dma_liobn;
+
+    if (svphb->iommugroupid == -1) {
+        error_setg(errp, "Wrong IOMMU group ID %d", svphb->iommugroupid);
+        return;
+    }
+
+    ret = vfio_container_ioctl(&svphb->phb.iommu_as, svphb->iommugroupid,
+                               VFIO_CHECK_EXTENSION,
+                               (void *) VFIO_SPAPR_TCE_IOMMU);
+    if (ret != 1) {
+        error_setg_errno(errp, -ret,
+                         "spapr-vfio: SPAPR extension is not supported");
+        return;
+    }
+
+    ret = vfio_container_ioctl(&svphb->phb.iommu_as, svphb->iommugroupid,
+                               VFIO_IOMMU_SPAPR_TCE_GET_INFO, &info);
+    if (ret) {
+        error_setg_errno(errp, -ret,
+                         "spapr-vfio: get info from container failed");
+        return;
+    }
+
+    tcet = spapr_tce_new_table(DEVICE(sphb), liobn, info.dma32_window_start,
+                               SPAPR_TCE_PAGE_SHIFT,
+                               info.dma32_window_size >> SPAPR_TCE_PAGE_SHIFT,
+                               true);
+    if (!tcet) {
+        error_setg(errp, "spapr-vfio: failed to create VFIO TCE table");
+        return;
+    }
+
+    /* Register default 32bit DMA window */
+    memory_region_add_subregion(&sphb->iommu_root, tcet->bus_offset,
+                                spapr_tce_get_iommu(tcet));
+}
+
+static void spapr_phb_vfio_reset(DeviceState *qdev)
+{
+    /* Do nothing */
+}
+
+static void spapr_phb_vfio_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    sPAPRPHBClass *spc = SPAPR_PCI_HOST_BRIDGE_CLASS(klass);
+
+    dc->props = spapr_phb_vfio_properties;
+    dc->reset = spapr_phb_vfio_reset;
+    spc->finish_realize = spapr_phb_vfio_finish_realize;
+}
+
+static const TypeInfo spapr_phb_vfio_info = {
+    .name          = TYPE_SPAPR_PCI_VFIO_HOST_BRIDGE,
+    .parent        = TYPE_SPAPR_PCI_HOST_BRIDGE,
+    .instance_size = sizeof(sPAPRPHBVFIOState),
+    .class_init    = spapr_phb_vfio_class_init,
+    .class_size    = sizeof(sPAPRPHBClass),
+};
+
+static void spapr_pci_vfio_register_types(void)
+{
+    type_register_static(&spapr_phb_vfio_info);
+}
+
+type_init(spapr_pci_vfio_register_types)