genode

History

Stefan Kalkowski 2380fc442f ahci: avoid to reinstantiate backend driver Instead of fixing the missing dynamic facilities of the AHCI driver backends for x86 and Exynos5, just avoid to create/destroy the backend for every new connection, but always use one and the same object. The AHCI drivers need to be re-written anyway, see issue #1352 for instance, we can make it more robust for the dynamic case then. Fixes #786 Fixes #1133		2015-01-12 14:24:55 +01:00
..
exynos5	Fix handling of cache attribute with RAM	2014-11-28 12:02:38 +01:00
include	ahci: ignore spurious interrupts	2014-10-10 13:02:31 +02:00
x86	ahci: throw exception if device can not be found	2014-06-26 12:03:28 +02:00
empty.cc	Move repositories to 'repos/' subdirectory	2014-05-14 16:08:00 +02:00
main.cc	ahci: avoid to reinstantiate backend driver	2015-01-12 14:24:55 +01:00
README	Move repositories to 'repos/' subdirectory	2014-05-14 16:08:00 +02:00
target.mk	Move repositories to 'repos/' subdirectory	2014-05-14 16:08:00 +02:00

README

This directory contains an implementation of a simple AHCI driver.

Behavior
--------

The server implements Genode's new block-driver API ('os/include/block'), thus
exposing the block-session interface as front-end. AHCI depends on Genode's PCI
driver as well as the timer server. For a usage example see: 'os/run/ahci.run'.

Limitations and known issues
----------------------------

Currently, the server scans the PCI bus at startup and retrieves the first available
AHCI controller, scans the controller ports and uses the first non-ATAPI port
where a device is present.

On real hardware and on kernels taking advantage of I/O APICs (namely NOVA and
Fiasco.OC) we still lack support for ACPI parsing and thus for interrupts,
leading to a non-working driver.