diff options
| -rw-r--r-- | hw/ppc/Makefile.objs | 3 | ||||
| -rw-r--r-- | hw/ppc/spapr_pci_vfio.c | 102 | ||||
| -rw-r--r-- | include/hw/pci-host/spapr.h | 11 |
3 files changed, 116 insertions, 0 deletions
diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs index ea747f0..edd44d0 100644 --- a/hw/ppc/Makefile.objs +++ b/hw/ppc/Makefile.objs @@ -4,6 +4,9 @@ obj-y += ppc.o ppc_booke.o obj-$(CONFIG_PSERIES) += spapr.o spapr_vio.o spapr_events.o obj-$(CONFIG_PSERIES) += spapr_hcall.o spapr_iommu.o spapr_rtas.o obj-$(CONFIG_PSERIES) += spapr_pci.o +ifeq ($(CONFIG_PCI)$(CONFIG_PSERIES)$(CONFIG_LINUX), yyy) +obj-y += spapr_pci_vfio.o +endif # PowerPC 4xx boards obj-y += ppc405_boards.o ppc4xx_devs.o ppc405_uc.o ppc440_bamboo.o obj-y += ppc4xx_pci.o 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) diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h index 0934518..6808e96 100644 --- a/include/hw/pci-host/spapr.h +++ b/include/hw/pci-host/spapr.h @@ -30,10 +30,14 @@ #define SPAPR_MSIX_MAX_DEVS 32 #define TYPE_SPAPR_PCI_HOST_BRIDGE "spapr-pci-host-bridge" +#define TYPE_SPAPR_PCI_VFIO_HOST_BRIDGE "spapr-pci-vfio-host-bridge" #define SPAPR_PCI_HOST_BRIDGE(obj) \ OBJECT_CHECK(sPAPRPHBState, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE) +#define SPAPR_PCI_VFIO_HOST_BRIDGE(obj) \ + OBJECT_CHECK(sPAPRPHBVFIOState, (obj), TYPE_SPAPR_PCI_VFIO_HOST_BRIDGE) + #define SPAPR_PCI_HOST_BRIDGE_CLASS(klass) \ OBJECT_CLASS_CHECK(sPAPRPHBClass, (klass), TYPE_SPAPR_PCI_HOST_BRIDGE) #define SPAPR_PCI_HOST_BRIDGE_GET_CLASS(obj) \ @@ -41,6 +45,7 @@ typedef struct sPAPRPHBClass sPAPRPHBClass; typedef struct sPAPRPHBState sPAPRPHBState; +typedef struct sPAPRPHBVFIOState sPAPRPHBVFIOState; struct sPAPRPHBClass { PCIHostBridgeClass parent_class; @@ -76,6 +81,12 @@ struct sPAPRPHBState { QLIST_ENTRY(sPAPRPHBState) list; }; +struct sPAPRPHBVFIOState { + sPAPRPHBState phb; + + int32_t iommugroupid; +}; + #define SPAPR_PCI_BASE_BUID 0x800000020000000ULL #define SPAPR_PCI_WINDOW_BASE 0x10000000000ULL |
