dragonball: introduce vfio support

vfio mod collects lots of information related to the vfio operations, including VfioMsi and VfioMsix capability & state,
vfio interrupt info, pci region infor and vfio pci device info & state.

fixes: #8722

Signed-off-by: Gerry Liu <gerry@linux.alibaba.com>
Signed-off-by: Zizheng Bian <zizheng.bian@linux.alibaba.com>
Signed-off-by: Shifang Feng <fengshifang@linux.alibaba.com>
Signed-off-by: Yang Su <yang.su@linux.alibaba.com>
Signed-off-by: Zha Bin <zhabin@linux.alibaba.com>
Signed-off-by: Xin Lin <jingshan@linux.alibaba.com>
Signed-off-by: Chao Wu <chaowu@linux.alibaba.com>

src/dragonball/src/dbs_pci/Cargo.toml

@@ -11,14 +11,21 @@ keywords = ["dragonball", "secure-sandbox", "devices", "pci"]
 readme = "README.md"
 
 [dependencies]
+anyhow = "1"
+log = "0.4.14"
+thiserror = "1"
+dbs-allocator = { path = "../dbs_allocator" }
 dbs-device = { path = "../dbs_device" }
 dbs-interrupt = { path = "../dbs_interrupt", features = ["kvm-irq", "kvm-legacy-irq", "kvm-msi-irq"] }
-dbs-allocator = { path = "../dbs_allocator" }
-log = "0.4.14"
 downcast-rs = "1.2.0"
 byteorder = "1.4.3"
-thiserror = "1"
 vm-memory = "0.10.0"
+kvm-ioctls = "0.12.0"
+kvm-bindings = "0.6.0"
+vfio-ioctls = "0.1.0"
+vfio-bindings = "0.3.0"
+libc = "0.2.39"
 
 [dev-dependencies]
+dbs-arch = { path = "../dbs_arch" }
 kvm-ioctls = "0.12.0"

src/dragonball/src/dbs_pci/README.md

@@ -18,4 +18,10 @@ There are several components in `dbs-pci` crate building together to emulate PCI
 
 6. `msi` mod: struct to maintain information for PCI Message Signalled Interrupt Capability. It will be initialized when parsing PCI configuration space and used when getting interrupt capabilities.
 
-7. `msix` mod: struct to maintain information for PCI Message Signalled Interrupt Extended Capability. It will be initialized when parsing PCI configuration space and used when getting interrupt capabilities.
+7. `msix` mod: struct to maintain information for PCI Message Signalled Interrupt Extended Capability. It will be initialized when parsing PCI configuration space and used when getting interrupt capabilities.
+
+8. `vfio` mod: vfio mod collects lots of information related to the vfio operations.
+    a. vfio `msi` and `msix` capability and state
+    b. vfio interrupt information 
+    c. pci region information
+    d. vfio pci device information and state

src/dragonball/src/dbs_pci/src/lib.rs

@@ -48,7 +48,11 @@ mod root_device;
 pub use root_device::PciRootDevice;
 
 mod msi;
+pub use msi::{MsiCap, MsiState};
 mod msix;
+pub use msix::{MsixCap, MsixState, MSIX_TABLE_ENTRY_SIZE};
+
+mod vfio;
 
 /// Error codes related to PCI root/bus/device operations.
 #[derive(Debug, thiserror::Error)]