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pci: Extend PciDevice trait with move_bar() function

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In order to support PCI BAR reprogramming, the PciDevice trait defines a
new method move_bar() dedicated for taking appropriate action when a BAR
is moved to a different guest address.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2019-10-28 08:47:35 -07:00 committed by Samuel Ortiz
parent 3e37f59933
commit c865f93c9b
1 changed files with 2 additions and 0 deletions
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2
pci/src/device.rs
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@ -90,6 +90,8 @@ pub trait PciDevice: BusDevice {
/// * `addr` - The guest address inside the BAR.
/// * `data` - The data to write.
fn write_bar(&mut self, _base: u64, _offset: u64, _data: &[u8]) {}
/// Relocates the BAR to a different address in guest address space.
fn move_bar(&mut self, _old_base: u64, _new_base: u64) {}
}
/// This trait defines a set of functions which can be triggered whenever a