Hello,
I''m trying to reverse-engineer a PCI sound card driver.
The card is assigned to a Xen HVM guest (Windows) using PCI passthrough, the
driver is installed and works. I had to compile Xen 4.2.3 from source as PCI
passthrough is broken in 4.1.4-3+deb7u1 present in Debian Wheezy.
Now I need to capture/log/dump/trace PIO and/or MMIO accesses that the driver
does to the assigned device.
Found tools/qemu-xen-traditional/hw/pass-through.c file that seems to be
responsible for pass-through but I''m unable to figure out if this is
even
possible at all.
Or should I use qemu-kvm instead? It was possible some time ago:
http://www.coreboot.org/Reverse_Engineering_PCI_Drivers
but it''s outdated and that code is not present in qemu anymore.
--
Ondrej Zary
