Don't emulate anything yet. Just check if the user would like to pass an
Intel GPU to the guest.
Reviewed by: jhb, markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D40038
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
Intel GPUs have two special memory regions. They are called Graphics
Stolen Memory and OpRegion. bhyve has to emulate both of them. In order
to keep track of those special regions, add generic mmio ranges to the
passthru emulation.
Reviewed by: markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D40036
The GVT-d emulation requires access to this selector to read from the
device.
Reviewed by: markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D40035
Most register of the PCI header are either constant values or require
emulation anyway. The command and status register are the only exception which
require hardware access. So, we're adding an emulation handler for all
other register.
As this emulation handler will be reused by some future features like
GPU passthrough, we directly export it.
Reviewed by: markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D33010
GPU passthrough requires a special handling of some PCI config register.
Therefore, we need a flexible approach for implementing it. Adding an
array of handler meets this condition.
Start by using the default handler for all accesses to the PCI config
space. In upcoming commits, we can start to split the default handler
into several handler for each register that requires emulation.
Reviewed by: markj
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D39291
Export functions for reading and writing the pci config space from passthru
device to be used by other devices.
This is required for lpc devices to set their vendor/device ids to their
physical values.
Otherwise, GPU passthrough for integrated Intel GPUs won't work properly.
Differential Revision: https://reviews.freebsd.org/D33769
Reviewed by: markj
Sponsored by: Beckhoff Automation GmbH & Co. KG
MFC after: 1 month
