102343d0bSLoGin use crate::driver::base::device::device_number::DeviceNumber; 240314b30SXiaoye Zheng use crate::filesystem::devfs::{DevFS, DeviceINode}; 340314b30SXiaoye Zheng use crate::filesystem::vfs::{ 440314b30SXiaoye Zheng core::generate_inode_id, 540314b30SXiaoye Zheng file::{File, FileMode}, 602343d0bSLoGin FilePrivateData, FileSystem, FileType, IndexNode, Metadata, 740314b30SXiaoye Zheng }; 840314b30SXiaoye Zheng use crate::process::ProcessManager; 991e9d4abSLoGin use crate::{arch::KVMArch, libs::spinlock::SpinLock, time::TimeSpec}; 1040314b30SXiaoye Zheng use crate::{filesystem, kdebug}; 1140314b30SXiaoye Zheng // use crate::virt::kvm::{host_stack}; 1240314b30SXiaoye Zheng use super::push_vm; 1340314b30SXiaoye Zheng use crate::virt::kvm::vm_dev::LockedVmInode; 1440314b30SXiaoye Zheng use alloc::{ 1540314b30SXiaoye Zheng string::String, 1640314b30SXiaoye Zheng sync::{Arc, Weak}, 1740314b30SXiaoye Zheng vec::Vec, 1840314b30SXiaoye Zheng }; 1991e9d4abSLoGin use system_error::SystemError; 2040314b30SXiaoye Zheng 2140314b30SXiaoye Zheng pub const KVM_API_VERSION: u32 = 12; 2240314b30SXiaoye Zheng 2340314b30SXiaoye Zheng // use crate::virt::kvm::kvm_dev_ioctl_create_vm; 2440314b30SXiaoye Zheng /* 2540314b30SXiaoye Zheng * ioctls for /dev/kvm fds: 2640314b30SXiaoye Zheng */ 2740314b30SXiaoye Zheng pub const KVM_GET_API_VERSION: u32 = 0x00; 2840314b30SXiaoye Zheng pub const KVM_CREATE_VM: u32 = 0x01; 2940314b30SXiaoye Zheng pub const KVM_CHECK_EXTENSION: u32 = 0x03; 3040314b30SXiaoye Zheng pub const KVM_GET_VCPU_MMAP_SIZE: u32 = 0x04; // Get size for mmap(vcpu_fd) in bytes 3140314b30SXiaoye Zheng pub const KVM_TRACE_ENABLE: u32 = 0x05; 3240314b30SXiaoye Zheng pub const KVM_TRACE_PAUSE: u32 = 0x06; 3340314b30SXiaoye Zheng pub const KVM_TRACE_DISABLE: u32 = 0x07; 3440314b30SXiaoye Zheng 3540314b30SXiaoye Zheng #[derive(Debug)] 3640314b30SXiaoye Zheng pub struct KvmInode { 3740314b30SXiaoye Zheng /// uuid 暂时不知道有什么用(x 3840314b30SXiaoye Zheng // uuid: Uuid, 3940314b30SXiaoye Zheng /// 指向自身的弱引用 4040314b30SXiaoye Zheng self_ref: Weak<LockedKvmInode>, 4140314b30SXiaoye Zheng /// 指向inode所在的文件系统对象的指针 4240314b30SXiaoye Zheng fs: Weak<DevFS>, 4340314b30SXiaoye Zheng /// INode 元数据 4440314b30SXiaoye Zheng metadata: Metadata, 4540314b30SXiaoye Zheng } 4640314b30SXiaoye Zheng 4740314b30SXiaoye Zheng #[derive(Debug)] 4840314b30SXiaoye Zheng pub struct LockedKvmInode(SpinLock<KvmInode>); 4940314b30SXiaoye Zheng 5040314b30SXiaoye Zheng impl LockedKvmInode { 5140314b30SXiaoye Zheng pub fn new() -> Arc<Self> { 5240314b30SXiaoye Zheng let inode = KvmInode { 5340314b30SXiaoye Zheng self_ref: Weak::default(), 5440314b30SXiaoye Zheng fs: Weak::default(), 5540314b30SXiaoye Zheng metadata: Metadata { 5640314b30SXiaoye Zheng dev_id: 1, 5740314b30SXiaoye Zheng inode_id: generate_inode_id(), 5840314b30SXiaoye Zheng size: 0, 5940314b30SXiaoye Zheng blk_size: 0, 6040314b30SXiaoye Zheng blocks: 0, 6140314b30SXiaoye Zheng atime: TimeSpec::default(), 6240314b30SXiaoye Zheng mtime: TimeSpec::default(), 6340314b30SXiaoye Zheng ctime: TimeSpec::default(), 6440314b30SXiaoye Zheng file_type: FileType::KvmDevice, // 文件夹,block设备,char设备 6540314b30SXiaoye Zheng mode: filesystem::vfs::syscall::ModeType::S_IALLUGO, 6640314b30SXiaoye Zheng nlinks: 1, 6740314b30SXiaoye Zheng uid: 0, 6840314b30SXiaoye Zheng gid: 0, 6902343d0bSLoGin raw_dev: DeviceNumber::default(), // 这里用来作为device number 7040314b30SXiaoye Zheng }, 7140314b30SXiaoye Zheng }; 7240314b30SXiaoye Zheng 7340314b30SXiaoye Zheng let result = Arc::new(LockedKvmInode(SpinLock::new(inode))); 7440314b30SXiaoye Zheng result.0.lock().self_ref = Arc::downgrade(&result); 7540314b30SXiaoye Zheng 7640314b30SXiaoye Zheng return result; 7740314b30SXiaoye Zheng } 7840314b30SXiaoye Zheng } 7940314b30SXiaoye Zheng 8040314b30SXiaoye Zheng impl DeviceINode for LockedKvmInode { 8140314b30SXiaoye Zheng fn set_fs(&self, fs: Weak<DevFS>) { 8240314b30SXiaoye Zheng self.0.lock().fs = fs; 8340314b30SXiaoye Zheng } 8440314b30SXiaoye Zheng } 8540314b30SXiaoye Zheng 8640314b30SXiaoye Zheng impl IndexNode for LockedKvmInode { 8740314b30SXiaoye Zheng fn as_any_ref(&self) -> &dyn core::any::Any { 8840314b30SXiaoye Zheng self 8940314b30SXiaoye Zheng } 9040314b30SXiaoye Zheng 9140314b30SXiaoye Zheng fn open(&self, _data: &mut FilePrivateData, _mode: &FileMode) -> Result<(), SystemError> { 9240314b30SXiaoye Zheng kdebug!("file private data:{:?}", _data); 9340314b30SXiaoye Zheng return Ok(()); 9440314b30SXiaoye Zheng } 9540314b30SXiaoye Zheng 9640314b30SXiaoye Zheng fn close(&self, _data: &mut FilePrivateData) -> Result<(), SystemError> { 9740314b30SXiaoye Zheng return Ok(()); 9840314b30SXiaoye Zheng } 9940314b30SXiaoye Zheng 10040314b30SXiaoye Zheng fn metadata(&self) -> Result<Metadata, SystemError> { 10140314b30SXiaoye Zheng return Ok(self.0.lock().metadata.clone()); 10240314b30SXiaoye Zheng } 10340314b30SXiaoye Zheng 10440314b30SXiaoye Zheng fn fs(&self) -> Arc<dyn FileSystem> { 10540314b30SXiaoye Zheng return self.0.lock().fs.upgrade().unwrap(); 10640314b30SXiaoye Zheng } 10740314b30SXiaoye Zheng 10840314b30SXiaoye Zheng fn list(&self) -> Result<Vec<String>, SystemError> { 10940314b30SXiaoye Zheng Err(SystemError::EOPNOTSUPP_OR_ENOTSUP) 11040314b30SXiaoye Zheng } 11140314b30SXiaoye Zheng 11240314b30SXiaoye Zheng fn set_metadata(&self, metadata: &Metadata) -> Result<(), SystemError> { 11340314b30SXiaoye Zheng let mut inode = self.0.lock(); 11440314b30SXiaoye Zheng inode.metadata.atime = metadata.atime; 11540314b30SXiaoye Zheng inode.metadata.mtime = metadata.mtime; 11640314b30SXiaoye Zheng inode.metadata.ctime = metadata.ctime; 11740314b30SXiaoye Zheng inode.metadata.mode = metadata.mode; 11840314b30SXiaoye Zheng inode.metadata.uid = metadata.uid; 11940314b30SXiaoye Zheng inode.metadata.gid = metadata.gid; 12040314b30SXiaoye Zheng 12140314b30SXiaoye Zheng return Ok(()); 12240314b30SXiaoye Zheng } 12340314b30SXiaoye Zheng 12440314b30SXiaoye Zheng /// @brief io control接口 12540314b30SXiaoye Zheng /// 12640314b30SXiaoye Zheng /// @param cmd 命令 12740314b30SXiaoye Zheng /// @param data 数据 12840314b30SXiaoye Zheng /// 12940314b30SXiaoye Zheng /// @return 成功:Ok() 13040314b30SXiaoye Zheng /// 失败:Err(错误码) 131*52da9a59SGnoCiYeH fn ioctl( 132*52da9a59SGnoCiYeH &self, 133*52da9a59SGnoCiYeH cmd: u32, 134*52da9a59SGnoCiYeH data: usize, 135*52da9a59SGnoCiYeH _private_data: &FilePrivateData, 136*52da9a59SGnoCiYeH ) -> Result<usize, SystemError> { 13740314b30SXiaoye Zheng match cmd { 13840314b30SXiaoye Zheng 0xdeadbeef => { 13940314b30SXiaoye Zheng kdebug!("kvm ioctl"); 14040314b30SXiaoye Zheng Ok(0) 14140314b30SXiaoye Zheng } 14240314b30SXiaoye Zheng KVM_GET_API_VERSION => Ok(KVM_API_VERSION as usize), 14340314b30SXiaoye Zheng KVM_CREATE_VM => { 14440314b30SXiaoye Zheng kdebug!("kvm KVM_CREATE_VM"); 14540314b30SXiaoye Zheng kvm_dev_ioctl_create_vm(data) 14640314b30SXiaoye Zheng } 14740314b30SXiaoye Zheng KVM_CHECK_EXTENSION 14840314b30SXiaoye Zheng | KVM_GET_VCPU_MMAP_SIZE 14940314b30SXiaoye Zheng | KVM_TRACE_ENABLE 15040314b30SXiaoye Zheng | KVM_TRACE_PAUSE 15140314b30SXiaoye Zheng | KVM_TRACE_DISABLE => Err(SystemError::EOPNOTSUPP_OR_ENOTSUP), 15240314b30SXiaoye Zheng _ => KVMArch::kvm_arch_dev_ioctl(cmd, data), 15340314b30SXiaoye Zheng } 15440314b30SXiaoye Zheng } 15540314b30SXiaoye Zheng /// 读设备 - 应该调用设备的函数读写,而不是通过文件系统读写 15640314b30SXiaoye Zheng fn read_at( 15740314b30SXiaoye Zheng &self, 15840314b30SXiaoye Zheng _offset: usize, 15940314b30SXiaoye Zheng _len: usize, 16040314b30SXiaoye Zheng _buf: &mut [u8], 16140314b30SXiaoye Zheng _data: &mut FilePrivateData, 16240314b30SXiaoye Zheng ) -> Result<usize, SystemError> { 16340314b30SXiaoye Zheng Err(SystemError::EOPNOTSUPP_OR_ENOTSUP) 16440314b30SXiaoye Zheng } 16540314b30SXiaoye Zheng 16640314b30SXiaoye Zheng /// 写设备 - 应该调用设备的函数读写,而不是通过文件系统读写 16740314b30SXiaoye Zheng fn write_at( 16840314b30SXiaoye Zheng &self, 16940314b30SXiaoye Zheng _offset: usize, 17040314b30SXiaoye Zheng _len: usize, 17140314b30SXiaoye Zheng _buf: &[u8], 17240314b30SXiaoye Zheng _data: &mut FilePrivateData, 17340314b30SXiaoye Zheng ) -> Result<usize, SystemError> { 17440314b30SXiaoye Zheng Err(SystemError::EOPNOTSUPP_OR_ENOTSUP) 17540314b30SXiaoye Zheng } 17640314b30SXiaoye Zheng } 17740314b30SXiaoye Zheng 17840314b30SXiaoye Zheng #[no_mangle] 17940314b30SXiaoye Zheng pub fn kvm_dev_ioctl_create_vm(_vmtype: usize) -> Result<usize, SystemError> { 18040314b30SXiaoye Zheng push_vm(0).expect("need a valid vm!"); 18140314b30SXiaoye Zheng 18240314b30SXiaoye Zheng // 创建vm文件,返回文件描述符 18340314b30SXiaoye Zheng let vm_inode = LockedVmInode::new(); 18440314b30SXiaoye Zheng let file: File = File::new(vm_inode, FileMode::O_RDWR)?; 18540314b30SXiaoye Zheng let r = ProcessManager::current_pcb() 18640314b30SXiaoye Zheng .fd_table() 18740314b30SXiaoye Zheng .write() 18840314b30SXiaoye Zheng .alloc_fd(file, None) 18940314b30SXiaoye Zheng .map(|fd| fd as usize); 19040314b30SXiaoye Zheng return r; 19140314b30SXiaoye Zheng } 192