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pci: vfio: Extend Vfio trait to handle region read/write

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This allows the config code to be implemented in terms of that
primitive.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2021-07-06 16:06:57 +00:00 committed by Sebastien Boeuf
parent dc35dac306
commit 60d054519e
1 changed files with 14 additions and 8 deletions
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22
pci/src/vfio.rs
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@ -269,11 +269,19 @@ pub(crate) trait Vfio {
self.write_config(offset, &data)
}
fn read_config(&self, _offset: u32, _data: &mut [u8]) {
fn read_config(&self, offset: u32, data: &mut [u8]) {
self.region_read(VFIO_PCI_CONFIG_REGION_INDEX, offset.into(), data.as_mut());
}
fn write_config(&self, offset: u32, data: &[u8]) {
self.region_write(VFIO_PCI_CONFIG_REGION_INDEX, offset.into(), data)
}
fn region_read(&self, _index: u32, _offset: u64, _data: &mut [u8]) {
unimplemented!()
}
fn write_config(&self, _offset: u32, _data: &[u8]) {
fn region_write(&self, _index: u32, _offset: u64, _data: &[u8]) {
unimplemented!()
}
}
@ -289,14 +297,12 @@ impl VfioDeviceWrapper {
}
impl Vfio for VfioDeviceWrapper {
fn read_config(&self, offset: u32, data: &mut [u8]) {
self.device
.region_read(VFIO_PCI_CONFIG_REGION_INDEX, data.as_mut(), offset.into());
fn region_read(&self, index: u32, offset: u64, data: &mut [u8]) {
self.device.region_read(index, data, offset)
}
fn write_config(&self, offset: u32, data: &[u8]) {
self.device
.region_write(VFIO_PCI_CONFIG_REGION_INDEX, &data, offset.into())
fn region_write(&self, index: u32, offset: u64, data: &[u8]) {
self.device.region_write(index, data, offset)
}
}