diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2021-07-11 11:24:13 +0000 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2021-07-11 11:24:13 +0000 |
| commit | f58d99aa7a97ba5f79af89f38b78d5924d4e35a2 (patch) | |
| tree | 42aeb9f910f45bee8073edf3fa118e28cced6af4 /sys/src/9/pc64 | |
| parent | c3589ef3cf33189d342a3ab638b558fd9249b220 (diff) | |
virtio: add non-legacy virtio 1.0 drivers for disk and ethernet
The new interface uses pci capability structures to locate the
registers in a rather fine granular way making it more complicated
as they can be located anywhere in any pci bar at any offset.
As far as i can see, qemu (6.0.50) never uses i/o bars in
non-legacy mode, so only mmio is implemented for now.
The previous virtio drivers implemented the legacy interface only
which uses i/o ports for all register accesses. This is still
the preferred method (and also qemu default) as it is easier to
emulate and most likely faster.
However, some vps providers like vultr force the legacy interface
to disabled with qemu -device option "disable-legacy=on" resulting
on a system without a disk and ethernet.
Diffstat (limited to 'sys/src/9/pc64')
| -rw-r--r-- | sys/src/9/pc64/pc64 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/src/9/pc64/pc64 b/sys/src/9/pc64/pc64 index 3250e9a45..1c9fbd172 100644 --- a/sys/src/9/pc64/pc64 +++ b/sys/src/9/pc64/pc64 @@ -78,6 +78,7 @@ link etherwpi pci wifi etherrt2860 pci wifi ethervirtio pci + ethervirtio10 pci ethermedium # pcmciamodem netdevmedium @@ -105,6 +106,7 @@ misc sdiahci pci sdscsi led # sdodin pci sdscsi led sdvirtio pci sdscsi + sdvirtio10 pci sdscsi sdmmc pci pmmc sdnvme pci sdloop |