The specific part of PCI BAR reprogramming that happens for a virtio PCI
device is the update of the ioeventfds addresses KVM should listen to.
This should not be triggered for every BAR reprogramming associated with
the virtio device since a virtio PCI device might have multiple BARs.
The update of the ioeventfds addresses should only happen when the BAR
related to those addresses is being moved.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The PciDevice trait is supposed to describe only functions related to
PCI. The specific method ioeventfds() has nothing to do with PCI, but
instead would be more specific to virtio transport devices.
This commit removes the ioeventfds() method from the PciDevice trait,
adding some convenient helper as_any() to retrieve the Any trait from
the structure behing the PciDevice trait. This is the only way to keep
calling into ioeventfds() function from VirtioPciDevice, so that we can
still properly reprogram the PCI BAR.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Storing a strong reference to the AddressManager behind the
DeviceRelocation trait results in a cyclic reference count.
Use a weak reference to break that dependency.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on the value being written to the BAR, the implementation can
now detect if the BAR is being moved to another address. If that is the
case, it invokes move_bar() function from the DeviceRelocation trait.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to trigger the PCI BAR reprogramming from PciConfigIo and
PciConfigMmmio, we need the PciBus to have a hold onto the trait
implementation of DeviceRelocation.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By implementing the DeviceRelocation trait for the AddressManager
structure, we now have a way to let the PCI BAR reprogramming happen.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on the type of BAR, we can now provide the correct address related
to a BAR index provided by the caller.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to reuse the SystemAllocator later at runtime, it is moved into
the new structure AddressManager. The goal is to have a hold onto the
SystemAllocator and both IO and MMIO buses so that we can use them
later.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
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 new trait will allow the VMM to implement the mechanism following a
BAR modification regarding its location in the guest address space.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
After some of the build changes there was no longer a release artifact
left to be used for the release builds.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
To avoid a clash with to_bytes() for the unsigned integer types that is
coming in a future release.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This was verified by comparing the ASL from disassembling the DSDT
before and after. All the individual AML components themselves are also
unit tested.
Fixes: #352
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The generic version does not work in this case as it the size of the the
&[u8] is not the size of the slice's contents but how much memory the
slice object itself takes up.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add support for Word/DWord/QWord address spaces for I/O, memory and
buses. Using sensible defaults for infrequently set flags.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add support for generating resource templates (a kind of buffer) along
with generating Memory32Fixed to go into it.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Packages are a way of grouping values together and as such they require
an explicit length which is a variable length encoding calculated with
create_pkg_length().
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add support for the numerical types. By using type aliases the
generation can be very ergonomic as From<T> is implemented.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Root ("\"), single, dual and multi-part names are supported. "^" is not
supported (not widely used.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
cargo audit audits Cargo.lock for crates with security vulnerabvilities
reported by the RustSec Advisory Database.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
