This allows a single PCI daemon to run on the whole system, prevents
multiple drivers from claiming the same PCI device and makes it possible
for userspace to enumerate all available PCI devices. In the future this
will enable an lspci tool, possibly PCIe hot plugging and more.
Co-Authored-By: 4lDO2 <4lDO2@protonmail.com>
While for now this for now only includes helpers for the current limited
display interface which is relatively simple to implement manually, in
the future we will likely need a more complex interface with gpu drivers
that would be hard to get right without a common crate proving the
interface.
This unifies the driver interface handling between graphics drivers and
makes it easier to change all graphics drivers in lockstep when adding
new features.
The daemon responsible for the boot log must never ever block to avoid
deadlocks, but doing so while still accepting keyboard input is
non-trivial. This commit splits the boot log out from fbcond into a
separate daemon to make this a lot easier to implement. This will also
allow making fbcond blocking again, which will simplify some things.
This will in the future allow switching between graphical mode and text
mode virtual terminals while keeping alternative graphics drivers like
virtio-gpud enabled at all times rather than having to reset back to VGA
mode every time.
Sidenote: instead of STALLing because the driver didn't configure the
endpoints properly, regular transfers now work. Thus, QEMU was able to
recognize that it received a Bulk-Only Transport CBW. Yay!
Additionally, to make life easier when debugging, usbctl was added; now
it can get endpoint statuses which were previously non-accessible from
shell scripts, after the transition to the new ctl+data endpoint
interface.
bjorn3