102343d0bSLoGin use crate::driver::base::device::device_number::DeviceNumber;
2*2eab6dd7S曾俊 use crate::filesystem;
340314b30SXiaoye Zheng use crate::filesystem::devfs::DevFS;
440314b30SXiaoye Zheng use crate::filesystem::vfs::{
540314b30SXiaoye Zheng core::generate_inode_id,
640314b30SXiaoye Zheng file::{File, FileMode},
702343d0bSLoGin FilePrivateData, FileSystem, FileType, IndexNode, Metadata,
840314b30SXiaoye Zheng };
9dfe53cf0SGnoCiYeH use crate::libs::spinlock::SpinLockGuard;
1040314b30SXiaoye Zheng use crate::mm::VirtAddr;
1140314b30SXiaoye Zheng use crate::process::ProcessManager;
1240314b30SXiaoye Zheng use crate::syscall::user_access::copy_from_user;
1340314b30SXiaoye Zheng use crate::virt::kvm::host_mem::KvmUserspaceMemoryRegion;
1440314b30SXiaoye Zheng use crate::virt::kvm::update_vm;
1540314b30SXiaoye Zheng use crate::virt::kvm::vcpu_dev::LockedVcpuInode;
1640314b30SXiaoye Zheng use crate::virt::kvm::vm;
176fc066acSJomo use crate::{arch::KVMArch, libs::spinlock::SpinLock, time::PosixTimeSpec};
1840314b30SXiaoye Zheng use alloc::{
1940314b30SXiaoye Zheng string::String,
2040314b30SXiaoye Zheng sync::{Arc, Weak},
2140314b30SXiaoye Zheng vec::Vec,
2240314b30SXiaoye Zheng };
23*2eab6dd7S曾俊 use log::debug;
2491e9d4abSLoGin use system_error::SystemError;
2540314b30SXiaoye Zheng
2640314b30SXiaoye Zheng // pub const KVM_API_VERSION:u32 = 12;
2740314b30SXiaoye Zheng // pub const GUEST_STACK_SIZE:usize = 1024;
2840314b30SXiaoye Zheng // pub const HOST_STACK_SIZE:usize = 0x1000 * 6;
2940314b30SXiaoye Zheng
3040314b30SXiaoye Zheng /*
3140314b30SXiaoye Zheng * ioctls for /dev/vm fds:
3240314b30SXiaoye Zheng */
3340314b30SXiaoye Zheng pub const KVM_CREATE_VCPU: u32 = 0x00;
3440314b30SXiaoye Zheng pub const KVM_SET_USER_MEMORY_REGION: u32 = 0x01;
3540314b30SXiaoye Zheng pub const KVM_GET_DIRTY_LOG: u32 = 0x02;
3640314b30SXiaoye Zheng pub const KVM_IRQFD: u32 = 0x03;
3740314b30SXiaoye Zheng pub const KVM_IOEVENTFD: u32 = 0x04;
3840314b30SXiaoye Zheng pub const KVM_IRQ_LINE_STATUS: u32 = 0x05;
3940314b30SXiaoye Zheng
4040314b30SXiaoye Zheng // #[derive(Debug)]
4140314b30SXiaoye Zheng // pub struct InodeInfo {
4240314b30SXiaoye Zheng // kvm: Arc<Hypervisor>,
4340314b30SXiaoye Zheng // }
4440314b30SXiaoye Zheng
4540314b30SXiaoye Zheng #[derive(Debug)]
4640314b30SXiaoye Zheng pub struct VmInode {
4740314b30SXiaoye Zheng /// uuid 暂时不知道有什么用(x
4840314b30SXiaoye Zheng // uuid: Uuid,
4940314b30SXiaoye Zheng /// 指向自身的弱引用
5040314b30SXiaoye Zheng self_ref: Weak<LockedVmInode>,
5140314b30SXiaoye Zheng /// 指向inode所在的文件系统对象的指针
5240314b30SXiaoye Zheng fs: Weak<DevFS>,
5340314b30SXiaoye Zheng /// INode 元数据
5440314b30SXiaoye Zheng metadata: Metadata,
5540314b30SXiaoye Zheng // fdata: InodeInfo,
5640314b30SXiaoye Zheng }
5740314b30SXiaoye Zheng
5840314b30SXiaoye Zheng #[derive(Debug)]
5940314b30SXiaoye Zheng pub struct LockedVmInode(SpinLock<VmInode>);
6040314b30SXiaoye Zheng
6140314b30SXiaoye Zheng impl LockedVmInode {
new() -> Arc<Self>6240314b30SXiaoye Zheng pub fn new() -> Arc<Self> {
6340314b30SXiaoye Zheng let inode = VmInode {
6440314b30SXiaoye Zheng self_ref: Weak::default(),
6540314b30SXiaoye Zheng fs: Weak::default(),
6640314b30SXiaoye Zheng metadata: Metadata {
6740314b30SXiaoye Zheng dev_id: 1,
6840314b30SXiaoye Zheng inode_id: generate_inode_id(),
6940314b30SXiaoye Zheng size: 0,
7040314b30SXiaoye Zheng blk_size: 0,
7140314b30SXiaoye Zheng blocks: 0,
726fc066acSJomo atime: PosixTimeSpec::default(),
736fc066acSJomo mtime: PosixTimeSpec::default(),
746fc066acSJomo ctime: PosixTimeSpec::default(),
7540314b30SXiaoye Zheng file_type: FileType::KvmDevice, // 文件夹,block设备,char设备
7640314b30SXiaoye Zheng mode: filesystem::vfs::syscall::ModeType::S_IALLUGO,
7740314b30SXiaoye Zheng nlinks: 1,
7840314b30SXiaoye Zheng uid: 0,
7940314b30SXiaoye Zheng gid: 0,
8002343d0bSLoGin raw_dev: DeviceNumber::default(), // 这里用来作为device number
8140314b30SXiaoye Zheng },
8240314b30SXiaoye Zheng // fdata: InodeInfo {
8340314b30SXiaoye Zheng // kvm: kvm,
8440314b30SXiaoye Zheng // },
8540314b30SXiaoye Zheng };
8640314b30SXiaoye Zheng
8740314b30SXiaoye Zheng let result = Arc::new(LockedVmInode(SpinLock::new(inode)));
8840314b30SXiaoye Zheng result.0.lock().self_ref = Arc::downgrade(&result);
8940314b30SXiaoye Zheng
9040314b30SXiaoye Zheng return result;
9140314b30SXiaoye Zheng }
9240314b30SXiaoye Zheng }
9340314b30SXiaoye Zheng
9440314b30SXiaoye Zheng impl IndexNode for LockedVmInode {
as_any_ref(&self) -> &dyn core::any::Any9540314b30SXiaoye Zheng fn as_any_ref(&self) -> &dyn core::any::Any {
9640314b30SXiaoye Zheng self
9740314b30SXiaoye Zheng }
9840314b30SXiaoye Zheng
open( &self, _data: SpinLockGuard<FilePrivateData>, _mode: &FileMode, ) -> Result<(), SystemError>99dfe53cf0SGnoCiYeH fn open(
100dfe53cf0SGnoCiYeH &self,
101dfe53cf0SGnoCiYeH _data: SpinLockGuard<FilePrivateData>,
102dfe53cf0SGnoCiYeH _mode: &FileMode,
103dfe53cf0SGnoCiYeH ) -> Result<(), SystemError> {
104*2eab6dd7S曾俊 debug!("file private data:{:?}", _data);
10540314b30SXiaoye Zheng return Ok(());
10640314b30SXiaoye Zheng }
10740314b30SXiaoye Zheng
close(&self, _data: SpinLockGuard<FilePrivateData>) -> Result<(), SystemError>108dfe53cf0SGnoCiYeH fn close(&self, _data: SpinLockGuard<FilePrivateData>) -> Result<(), SystemError> {
10940314b30SXiaoye Zheng return Ok(());
11040314b30SXiaoye Zheng }
11140314b30SXiaoye Zheng
metadata(&self) -> Result<Metadata, SystemError>11240314b30SXiaoye Zheng fn metadata(&self) -> Result<Metadata, SystemError> {
11340314b30SXiaoye Zheng return Ok(self.0.lock().metadata.clone());
11440314b30SXiaoye Zheng }
11540314b30SXiaoye Zheng
fs(&self) -> Arc<dyn FileSystem>11640314b30SXiaoye Zheng fn fs(&self) -> Arc<dyn FileSystem> {
11740314b30SXiaoye Zheng return self.0.lock().fs.upgrade().unwrap();
11840314b30SXiaoye Zheng }
11940314b30SXiaoye Zheng
list(&self) -> Result<Vec<String>, SystemError>12040314b30SXiaoye Zheng fn list(&self) -> Result<Vec<String>, SystemError> {
1211074eb34SSamuel Dai Err(SystemError::ENOSYS)
12240314b30SXiaoye Zheng }
12340314b30SXiaoye Zheng
set_metadata(&self, metadata: &Metadata) -> Result<(), SystemError>12440314b30SXiaoye Zheng fn set_metadata(&self, metadata: &Metadata) -> Result<(), SystemError> {
12540314b30SXiaoye Zheng let mut inode = self.0.lock();
12640314b30SXiaoye Zheng inode.metadata.atime = metadata.atime;
12740314b30SXiaoye Zheng inode.metadata.mtime = metadata.mtime;
12840314b30SXiaoye Zheng inode.metadata.ctime = metadata.ctime;
12940314b30SXiaoye Zheng inode.metadata.mode = metadata.mode;
13040314b30SXiaoye Zheng inode.metadata.uid = metadata.uid;
13140314b30SXiaoye Zheng inode.metadata.gid = metadata.gid;
13240314b30SXiaoye Zheng
13340314b30SXiaoye Zheng return Ok(());
13440314b30SXiaoye Zheng }
13540314b30SXiaoye Zheng
13640314b30SXiaoye Zheng /// @brief io control接口
13740314b30SXiaoye Zheng ///
13840314b30SXiaoye Zheng /// @param cmd 命令
13940314b30SXiaoye Zheng /// @param data 数据
14040314b30SXiaoye Zheng ///
14140314b30SXiaoye Zheng /// @return 成功:Ok()
14240314b30SXiaoye Zheng /// 失败:Err(错误码)
ioctl( &self, cmd: u32, data: usize, _private_data: &FilePrivateData, ) -> Result<usize, SystemError>14352da9a59SGnoCiYeH fn ioctl(
14452da9a59SGnoCiYeH &self,
14552da9a59SGnoCiYeH cmd: u32,
14652da9a59SGnoCiYeH data: usize,
14752da9a59SGnoCiYeH _private_data: &FilePrivateData,
14852da9a59SGnoCiYeH ) -> Result<usize, SystemError> {
14940314b30SXiaoye Zheng match cmd {
15040314b30SXiaoye Zheng 0xdeadbeef => {
151*2eab6dd7S曾俊 debug!("kvm_vm ioctl");
15240314b30SXiaoye Zheng Ok(0)
15340314b30SXiaoye Zheng }
15440314b30SXiaoye Zheng KVM_CREATE_VCPU => {
155*2eab6dd7S曾俊 debug!("kvm_vcpu ioctl KVM_CREATE_VCPU");
15640314b30SXiaoye Zheng kvm_vm_ioctl_create_vcpu(data as u32)
15740314b30SXiaoye Zheng }
15840314b30SXiaoye Zheng KVM_SET_USER_MEMORY_REGION => {
159*2eab6dd7S曾俊 debug!("kvm_vcpu ioctl KVM_SET_USER_MEMORY_REGION data={:x}", data);
16040314b30SXiaoye Zheng let mut kvm_userspace_mem = KvmUserspaceMemoryRegion::default(); // = unsafe { (data as *const KvmUserspaceMemoryRegion).as_ref().unwrap() };
16140314b30SXiaoye Zheng unsafe {
16240314b30SXiaoye Zheng copy_from_user(
16340314b30SXiaoye Zheng core::slice::from_raw_parts_mut(
16440314b30SXiaoye Zheng (&mut kvm_userspace_mem as *mut _) as *mut u8,
16540314b30SXiaoye Zheng core::mem::size_of::<KvmUserspaceMemoryRegion>(),
16640314b30SXiaoye Zheng ),
16740314b30SXiaoye Zheng VirtAddr::new(data),
16840314b30SXiaoye Zheng )?;
16940314b30SXiaoye Zheng }
170*2eab6dd7S曾俊 debug!(
17140314b30SXiaoye Zheng "slot={}, flag={}, memory_size={:x}, guest_phys_addr={}, userspace_addr={}",
17240314b30SXiaoye Zheng kvm_userspace_mem.slot,
17340314b30SXiaoye Zheng kvm_userspace_mem.flags,
17440314b30SXiaoye Zheng kvm_userspace_mem.memory_size,
17540314b30SXiaoye Zheng kvm_userspace_mem.guest_phys_addr, // starting at physical address guest_phys_addr (from the guest’s perspective)
17640314b30SXiaoye Zheng kvm_userspace_mem.userspace_addr // using memory at linear address userspace_addr (from the host’s perspective)
17740314b30SXiaoye Zheng );
17840314b30SXiaoye Zheng
17940314b30SXiaoye Zheng let mut current_vm = vm(0).unwrap();
18040314b30SXiaoye Zheng current_vm.set_user_memory_region(&kvm_userspace_mem)?;
18140314b30SXiaoye Zheng update_vm(0, current_vm);
18240314b30SXiaoye Zheng Ok(0)
18340314b30SXiaoye Zheng }
18440314b30SXiaoye Zheng KVM_GET_DIRTY_LOG | KVM_IRQFD | KVM_IOEVENTFD | KVM_IRQ_LINE_STATUS => {
1851074eb34SSamuel Dai Err(SystemError::ENOSYS)
18640314b30SXiaoye Zheng }
18740314b30SXiaoye Zheng _ => {
188*2eab6dd7S曾俊 debug!("kvm_vm ioctl");
18940314b30SXiaoye Zheng Ok(usize::MAX)
19040314b30SXiaoye Zheng }
19140314b30SXiaoye Zheng }
19240314b30SXiaoye Zheng }
19340314b30SXiaoye 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
read_at( &self, _offset: usize, _len: usize, _buf: &mut [u8], _data: SpinLockGuard<FilePrivateData>, ) -> Result<usize, SystemError>19440314b30SXiaoye Zheng fn read_at(
19540314b30SXiaoye Zheng &self,
19640314b30SXiaoye Zheng _offset: usize,
19740314b30SXiaoye Zheng _len: usize,
19840314b30SXiaoye Zheng _buf: &mut [u8],
199dfe53cf0SGnoCiYeH _data: SpinLockGuard<FilePrivateData>,
20040314b30SXiaoye Zheng ) -> Result<usize, SystemError> {
2011074eb34SSamuel Dai Err(SystemError::ENOSYS)
20240314b30SXiaoye Zheng }
20340314b30SXiaoye Zheng
20440314b30SXiaoye 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
write_at( &self, _offset: usize, _len: usize, _buf: &[u8], _data: SpinLockGuard<FilePrivateData>, ) -> Result<usize, SystemError>20540314b30SXiaoye Zheng fn write_at(
20640314b30SXiaoye Zheng &self,
20740314b30SXiaoye Zheng _offset: usize,
20840314b30SXiaoye Zheng _len: usize,
20940314b30SXiaoye Zheng _buf: &[u8],
210dfe53cf0SGnoCiYeH _data: SpinLockGuard<FilePrivateData>,
21140314b30SXiaoye Zheng ) -> Result<usize, SystemError> {
2121074eb34SSamuel Dai Err(SystemError::ENOSYS)
21340314b30SXiaoye Zheng }
21440314b30SXiaoye Zheng }
21540314b30SXiaoye Zheng
kvm_vm_ioctl_create_vcpu(id: u32) -> Result<usize, SystemError>21640314b30SXiaoye Zheng fn kvm_vm_ioctl_create_vcpu(id: u32) -> Result<usize, SystemError> {
21740314b30SXiaoye Zheng let vcpu = KVMArch::kvm_arch_vcpu_create(id).unwrap();
21840314b30SXiaoye Zheng KVMArch::kvm_arch_vcpu_setup(vcpu.as_ref())?;
21940314b30SXiaoye Zheng
22040314b30SXiaoye Zheng let mut current_vm = vm(0).unwrap();
22140314b30SXiaoye Zheng current_vm.vcpu.push(vcpu);
22240314b30SXiaoye Zheng current_vm.nr_vcpus += 1;
22340314b30SXiaoye Zheng update_vm(0, current_vm);
22440314b30SXiaoye Zheng
22540314b30SXiaoye Zheng let vcpu_inode = LockedVcpuInode::new();
22640314b30SXiaoye Zheng let file: File = File::new(vcpu_inode, FileMode::O_RDWR)?;
22740314b30SXiaoye Zheng let r = ProcessManager::current_pcb()
22840314b30SXiaoye Zheng .fd_table()
22940314b30SXiaoye Zheng .write()
23040314b30SXiaoye Zheng .alloc_fd(file, None)
23140314b30SXiaoye Zheng .map(|fd| fd as usize);
23240314b30SXiaoye Zheng return r;
23340314b30SXiaoye Zheng }
234