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| author | Bernhard Beschow <shentey@gmail.com> | 2024-01-14 13:39:11 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-02-14 06:09:32 -0500 |
| commit | 35a6380b4ed27f8355330b1fb0918b20c728d30e (patch) | |
| tree | 99be38aee5cb18cc25614f478a1520cfea9e564f /hw/virtio/vhost-user-input-pci.c | |
| parent | 79a7f53065abea95b33e2212dcfb58e1de4be479 (diff) | |
| download | qemu-35a6380b4ed27f8355330b1fb0918b20c728d30e.zip qemu-35a6380b4ed27f8355330b1fb0918b20c728d30e.tar.gz qemu-35a6380b4ed27f8355330b1fb0918b20c728d30e.tar.bz2 | |
hw/isa/vt82c686: Implement relocation and toggling of SuperI/O functions
The VIA south bridges are able to relocate and toggle (enable or disable) their
SuperI/O functions. So far this is hardcoded such that all functions are always
enabled and are located at fixed addresses.
Some PC BIOSes seem to probe for I/O occupancy before activating such a function
and issue an error in case of a conflict. Since the functions are currently
enabled on reset, conflicts are always detected. Prevent that by implementing
relocation and toggling of the SuperI/O functions.
Note that all SuperI/O functions are now deactivated upon reset (except for
VT82C686B's serial ports where Fuloong 2e's rescue-yl seems to expect them to be
enabled by default). Rely on firmware to configure the functions accordingly.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <20240114123911.4877-12-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio/vhost-user-input-pci.c')
0 files changed, 0 insertions, 0 deletions