274c63e367
This adds support for usb interrupt transfers to the OHCI driver. Basically this enables support for HID keyboard devices. For each interrupt transfer endpoint, two queues of transfer descriptors (TDs) are maintained: the first with initialized TDs is linked to the periodic schedule of the host controller (HC), the second holds processed TDs which will be polled by the usb class driver. The HC moves processed TDs from its schedule to a done queue. We periodically fetch all TDs from the done queue, to put them on the queue associated with the endpoint, where they can be polled from. Fully processed TDs (i.e. which have gone throuch all of this) will be reinitialized and put on the first queue again. Change-Id: Iaab72c04087b36c9f0f6e539e31b47060c190015 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1128 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins) |
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| libpayload | ||