diff options
| -rw-r--r-- | MAINTAINERS | 2 | ||||
| -rw-r--r-- | backends/host_iommu_device.c | 33 | ||||
| -rw-r--r-- | backends/meson.build | 1 | ||||
| -rw-r--r-- | include/sysemu/host_iommu_device.h | 53 |
4 files changed, 89 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index f144b5af44..19f67dc5d2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2198,6 +2198,8 @@ M: Zhenzhong Duan <zhenzhong.duan@intel.com> S: Supported F: backends/iommufd.c F: include/sysemu/iommufd.h +F: backends/host_iommu_device.c +F: include/sysemu/host_iommu_device.h F: include/qemu/chardev_open.h F: util/chardev_open.c F: docs/devel/vfio-iommufd.rst diff --git a/backends/host_iommu_device.c b/backends/host_iommu_device.c new file mode 100644 index 0000000000..8f2dda1beb --- /dev/null +++ b/backends/host_iommu_device.c @@ -0,0 +1,33 @@ +/* + * Host IOMMU device abstract + * + * Copyright (C) 2024 Intel Corporation. + * + * Authors: Zhenzhong Duan <zhenzhong.duan@intel.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "sysemu/host_iommu_device.h" + +OBJECT_DEFINE_ABSTRACT_TYPE(HostIOMMUDevice, + host_iommu_device, + HOST_IOMMU_DEVICE, + OBJECT) + +static void host_iommu_device_class_init(ObjectClass *oc, void *data) +{ +} + +static void host_iommu_device_init(Object *obj) +{ +} + +static void host_iommu_device_finalize(Object *obj) +{ + HostIOMMUDevice *hiod = HOST_IOMMU_DEVICE(obj); + + g_free(hiod->name); +} diff --git a/backends/meson.build b/backends/meson.build index 8b2b111497..106312f0c8 100644 --- a/backends/meson.build +++ b/backends/meson.build @@ -16,6 +16,7 @@ if host_os != 'windows' endif if host_os == 'linux' system_ss.add(files('hostmem-memfd.c')) + system_ss.add(files('host_iommu_device.c')) endif if keyutils.found() system_ss.add(keyutils, files('cryptodev-lkcf.c')) diff --git a/include/sysemu/host_iommu_device.h b/include/sysemu/host_iommu_device.h new file mode 100644 index 0000000000..db47a16189 --- /dev/null +++ b/include/sysemu/host_iommu_device.h @@ -0,0 +1,53 @@ +/* + * Host IOMMU device abstract declaration + * + * Copyright (C) 2024 Intel Corporation. + * + * Authors: Zhenzhong Duan <zhenzhong.duan@intel.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#ifndef HOST_IOMMU_DEVICE_H +#define HOST_IOMMU_DEVICE_H + +#include "qom/object.h" +#include "qapi/error.h" + +#define TYPE_HOST_IOMMU_DEVICE "host-iommu-device" +OBJECT_DECLARE_TYPE(HostIOMMUDevice, HostIOMMUDeviceClass, HOST_IOMMU_DEVICE) + +struct HostIOMMUDevice { + Object parent_obj; + + char *name; +}; + +/** + * struct HostIOMMUDeviceClass - The base class for all host IOMMU devices. + * + * Different types of host devices (e.g., VFIO or VDPA device) or devices + * with different backend (e.g., VFIO legacy container or IOMMUFD backend) + * will have different implementations of the HostIOMMUDeviceClass. + */ +struct HostIOMMUDeviceClass { + ObjectClass parent_class; + + /** + * @realize: initialize host IOMMU device instance further. + * + * Mandatory callback. + * + * @hiod: pointer to a host IOMMU device instance. + * + * @opaque: pointer to agent device of this host IOMMU device, + * e.g., VFIO base device or VDPA device. + * + * @errp: pass an Error out when realize fails. + * + * Returns: true on success, false on failure. + */ + bool (*realize)(HostIOMMUDevice *hiod, void *opaque, Error **errp); +}; +#endif |