mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
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pci: vfio_user: Merge duplicate 'impl VfioUserPciDevice' block
Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen
Bo Chen
parent
589dc77354
commit
0d7328da01
@ -116,6 +116,146 @@ impl VfioUserPciDevice {
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common,
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})
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}
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pub fn map_mmio_regions<F>(
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&mut self,
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vm: &Arc<dyn hypervisor::Vm>,
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mem_slot: F,
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) -> Result<(), VfioUserPciDeviceError>
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where
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F: Fn() -> u32,
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{
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for mmio_region in &mut self.common.mmio_regions {
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let region_flags = self
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.client
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.lock()
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.unwrap()
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.region(mmio_region.index)
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.unwrap()
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.flags;
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let file_offset = self
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.client
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.lock()
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.unwrap()
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.region(mmio_region.index)
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.unwrap()
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.file_offset
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.clone();
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if region_flags & VFIO_REGION_INFO_FLAG_MMAP != 0 {
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let mut prot = 0;
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if region_flags & VFIO_REGION_INFO_FLAG_READ != 0 {
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prot |= libc::PROT_READ;
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}
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if region_flags & VFIO_REGION_INFO_FLAG_WRITE != 0 {
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prot |= libc::PROT_WRITE;
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}
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let host_addr = unsafe {
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libc::mmap(
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null_mut(),
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mmio_region.length as usize,
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prot,
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libc::MAP_SHARED,
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file_offset.as_ref().unwrap().file().as_raw_fd(),
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file_offset.as_ref().unwrap().start() as libc::off_t,
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)
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};
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if host_addr == libc::MAP_FAILED {
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error!(
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"Could not mmap regions, error:{}",
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std::io::Error::last_os_error()
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);
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continue;
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}
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let slot = mem_slot();
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let mem_region = vm.make_user_memory_region(
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slot,
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mmio_region.start.0,
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mmio_region.length as u64,
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host_addr as u64,
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false,
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false,
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);
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vm.create_user_memory_region(mem_region)
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.map_err(VfioUserPciDeviceError::MapRegionGuest)?;
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mmio_region.mem_slot = Some(slot);
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mmio_region.host_addr = Some(host_addr as u64);
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mmio_region.mmap_size = Some(mmio_region.length as usize);
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}
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}
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Ok(())
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}
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pub fn unmap_mmio_regions(&mut self) {
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for mmio_region in self.common.mmio_regions.iter() {
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if let (Some(host_addr), Some(mmap_size), Some(mem_slot)) = (
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mmio_region.host_addr,
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mmio_region.mmap_size,
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mmio_region.mem_slot,
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) {
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// Remove region
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let r = self.vm.make_user_memory_region(
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mem_slot,
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mmio_region.start.raw_value(),
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mmap_size as u64,
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host_addr as u64,
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false,
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false,
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);
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if let Err(e) = self.vm.remove_user_memory_region(r) {
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error!("Could not remove the userspace memory region: {}", e);
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}
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let ret = unsafe { libc::munmap(host_addr as *mut libc::c_void, mmap_size) };
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if ret != 0 {
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error!(
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"Could not unmap region {}, error:{}",
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mmio_region.index,
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std::io::Error::last_os_error()
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);
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}
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}
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}
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}
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pub fn dma_map(
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&mut self,
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region: &GuestRegionMmap<AtomicBitmap>,
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) -> Result<(), VfioUserPciDeviceError> {
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let (fd, offset) = match region.file_offset() {
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Some(_file_offset) => (_file_offset.file().as_raw_fd(), _file_offset.start()),
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None => return Ok(()),
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};
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self.client
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.lock()
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.unwrap()
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.dma_map(
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offset,
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region.start_addr().raw_value(),
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region.len() as u64,
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fd,
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)
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.map_err(VfioUserPciDeviceError::DmaMap)
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}
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pub fn dma_unmap(
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&mut self,
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region: &GuestRegionMmap<AtomicBitmap>,
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) -> Result<(), VfioUserPciDeviceError> {
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self.client
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.lock()
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.unwrap()
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.dma_unmap(region.start_addr().raw_value(), region.len() as u64)
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.map_err(VfioUserPciDeviceError::DmaUnmap)
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}
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}
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impl BusDevice for VfioUserPciDevice {
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@ -330,148 +470,6 @@ impl PciDevice for VfioUserPciDevice {
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}
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}
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impl VfioUserPciDevice {
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pub fn map_mmio_regions<F>(
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&mut self,
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vm: &Arc<dyn hypervisor::Vm>,
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mem_slot: F,
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) -> Result<(), VfioUserPciDeviceError>
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where
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F: Fn() -> u32,
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{
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for mmio_region in &mut self.common.mmio_regions {
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let region_flags = self
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.client
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.lock()
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.unwrap()
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.region(mmio_region.index)
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.unwrap()
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.flags;
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let file_offset = self
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.client
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.lock()
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.unwrap()
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.region(mmio_region.index)
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.unwrap()
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.file_offset
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.clone();
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if region_flags & VFIO_REGION_INFO_FLAG_MMAP != 0 {
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let mut prot = 0;
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if region_flags & VFIO_REGION_INFO_FLAG_READ != 0 {
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prot |= libc::PROT_READ;
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}
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if region_flags & VFIO_REGION_INFO_FLAG_WRITE != 0 {
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prot |= libc::PROT_WRITE;
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}
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let host_addr = unsafe {
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libc::mmap(
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null_mut(),
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mmio_region.length as usize,
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prot,
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libc::MAP_SHARED,
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file_offset.as_ref().unwrap().file().as_raw_fd(),
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file_offset.as_ref().unwrap().start() as libc::off_t,
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)
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};
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if host_addr == libc::MAP_FAILED {
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error!(
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"Could not mmap regions, error:{}",
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std::io::Error::last_os_error()
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);
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continue;
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}
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let slot = mem_slot();
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let mem_region = vm.make_user_memory_region(
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slot,
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mmio_region.start.0,
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mmio_region.length as u64,
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host_addr as u64,
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false,
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false,
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);
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vm.create_user_memory_region(mem_region)
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.map_err(VfioUserPciDeviceError::MapRegionGuest)?;
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mmio_region.mem_slot = Some(slot);
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mmio_region.host_addr = Some(host_addr as u64);
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mmio_region.mmap_size = Some(mmio_region.length as usize);
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}
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}
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Ok(())
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}
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pub fn unmap_mmio_regions(&mut self) {
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for mmio_region in self.common.mmio_regions.iter() {
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if let (Some(host_addr), Some(mmap_size), Some(mem_slot)) = (
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mmio_region.host_addr,
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mmio_region.mmap_size,
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mmio_region.mem_slot,
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) {
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// Remove region
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let r = self.vm.make_user_memory_region(
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mem_slot,
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mmio_region.start.raw_value(),
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mmap_size as u64,
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host_addr as u64,
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false,
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false,
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);
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if let Err(e) = self.vm.remove_user_memory_region(r) {
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error!("Could not remove the userspace memory region: {}", e);
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}
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let ret = unsafe { libc::munmap(host_addr as *mut libc::c_void, mmap_size) };
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if ret != 0 {
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error!(
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"Could not unmap region {}, error:{}",
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mmio_region.index,
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std::io::Error::last_os_error()
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);
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}
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}
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}
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}
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pub fn dma_map(
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&mut self,
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region: &GuestRegionMmap<AtomicBitmap>,
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) -> Result<(), VfioUserPciDeviceError> {
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let (fd, offset) = match region.file_offset() {
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Some(_file_offset) => (_file_offset.file().as_raw_fd(), _file_offset.start()),
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None => return Ok(()),
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};
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self.client
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.lock()
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.unwrap()
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.dma_map(
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offset,
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region.start_addr().raw_value(),
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region.len() as u64,
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fd,
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)
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.map_err(VfioUserPciDeviceError::DmaMap)
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}
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pub fn dma_unmap(
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&mut self,
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region: &GuestRegionMmap<AtomicBitmap>,
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) -> Result<(), VfioUserPciDeviceError> {
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self.client
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.lock()
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.unwrap()
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.dma_unmap(region.start_addr().raw_value(), region.len() as u64)
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.map_err(VfioUserPciDeviceError::DmaUnmap)
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}
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}
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impl Drop for VfioUserPciDevice {
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fn drop(&mut self) {
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self.unmap_mmio_regions();
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