genode

History

Stefan Kalkowski 50d73e7890 block_session: extend interface with sync() call To support components, which implement the block session's server side rpc object, and which doesn't write data to their device backend immediately, an additional synchronization call is needed. Thereby, clients like for instance a file system can tell these components, when a synchronization is required. Ref #113		2013-11-25 12:12:31 +01:00
..
exynos5	arndale: centralize spec of interrupt names	2013-11-14 19:56:39 +01:00
include	block_session: extend interface with sync() call	2013-11-25 12:12:31 +01:00
x86_32	ahci_drv: separate PCI specifics from the rest	2013-05-22 18:32:05 +02:00
empty.cc	ahci_drv: separate PCI specifics from the rest	2013-05-22 18:32:05 +02:00
main.cc	ahci_drv: separate PCI specifics from the rest	2013-05-22 18:32:05 +02:00
README	Imported Genode release 11.11	2011-12-22 16:19:25 +01:00
target.mk	ahci_drv: separate PCI specifics from the rest	2013-05-22 18:32:05 +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.