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| author |   patrick <patrick@openbsd.org> | 2017-02-25 17:04:19 +0000 |
|---|---|---|
| committer | patrick <patrick@openbsd.org> | 2017-02-25 17:04:19 +0000 |
| commit | c17c7ba4ca6380bb28e99ac868ba8791799e1c61 (patch) | |
| tree | 2cca245ea9d9942ecb3c1534f334bb3803197bbc /lib | |
| parent | MSI interrupts are established in a different way as well. Instead of (diff) | |
| download | wireguard-openbsd-c17c7ba4ca6380bb28e99ac868ba8791799e1c61.tar.xz wireguard-openbsd-c17c7ba4ca6380bb28e99ac868ba8791799e1c61.zip | |
Implement ampintcmsi(4) in ampintc(4) to support MSI. The GICv2M is an
extension to the GIC controller, which is represented as subnode in the
device tree. There can be multiple GICv2Ms, so it makes sense to attach
those to ampintc(4) as some kind of simplebus. The GICv2M is simply an
interrupt generator that can be used by PCIe devices to ring the door
bell. There is no need for further configuration, we only need to find
out which SPIs we are allowed to use for MSI and to register an edge
triggered interrupt on a (randomly) allocated SPI.
ok kettenis@
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions