| 1 | /* |
| 2 | * Nitro Enclave Vsock Bus |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | |
| 7 | #ifndef HW_NITRO_VSOCK_BUS_H |
| 8 | #define HW_NITRO_VSOCK_BUS_H |
| 9 | |
| 10 | #include "hw/core/qdev.h" |
| 11 | #include "hw/core/sysbus.h" |
| 12 | #include "qom/object.h" |
| 13 | |
| 14 | #define TYPE_NITRO_VSOCK_BUS "nitro-vsock-bus" |
| 15 | OBJECT_DECLARE_SIMPLE_TYPE(NitroVsockBus, NITRO_VSOCK_BUS) |
| 16 | |
| 17 | #define TYPE_NITRO_VSOCK_BRIDGE "nitro-vsock-bridge" |
| 18 | OBJECT_DECLARE_SIMPLE_TYPE(NitroVsockBridge, NITRO_VSOCK_BRIDGE) |
| 19 | |
| 20 | #define TYPE_NITRO_VSOCK_DEVICE "nitro-vsock-device" |
| 21 | OBJECT_DECLARE_TYPE(NitroVsockDevice, NitroVsockDeviceClass, |
| 22 | NITRO_VSOCK_DEVICE) |
| 23 | |
| 24 | struct NitroVsockBus { |
| 25 | BusState parent_obj; |
| 26 | }; |
| 27 | |
| 28 | struct NitroVsockBridge { |
| 29 | SysBusDevice parent_obj; |
| 30 | |
| 31 | NitroVsockBus bus; |
| 32 | uint32_t enclave_cid; |
| 33 | }; |
| 34 | |
| 35 | struct NitroVsockDevice { |
| 36 | DeviceState parent_obj; |
| 37 | }; |
| 38 | |
| 39 | struct NitroVsockDeviceClass { |
| 40 | DeviceClass parent_class; |
| 41 | |
| 42 | /* |
| 43 | * Called after the enclave has been started and the CID is known. |
| 44 | * Devices use this to establish vsock connections to the enclave. |
| 45 | */ |
| 46 | void (*enclave_started)(NitroVsockDevice *dev, uint32_t enclave_cid, |
| 47 | Error **errp); |
| 48 | }; |
| 49 | |
| 50 | /* |
| 51 | * Machine helper to create the Nitro vsock bridge sysbus device. |
| 52 | */ |
| 53 | NitroVsockBridge *nitro_vsock_bridge_create(void); |
| 54 | |
| 55 | /* |
| 56 | * Find the Nitro vsock bridge on the sysbus. |
| 57 | */ |
| 58 | static inline NitroVsockBridge *nitro_vsock_bridge_find(void) |
| 59 | { |
| 60 | return NITRO_VSOCK_BRIDGE( |
| 61 | object_resolve_path_type("", TYPE_NITRO_VSOCK_BRIDGE, NULL)); |
| 62 | } |
| 63 | |
| 64 | /* |
| 65 | * Notify the bridge that the enclave has started. Dispatches |
| 66 | * enclave_started() to all devices on the bus. |
| 67 | */ |
| 68 | void nitro_vsock_bridge_start_enclave(NitroVsockBridge *bridge, |
| 69 | uint32_t enclave_cid, Error **errp); |
| 70 | |
| 71 | #endif /* HW_NITRO_VSOCK_BUS_H */ |