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The new 'dde_linux' repository will host device drivers ported from the Linux kernel. In contrast to the original 'linux_drivers' repository, 'dde_linux' does not contain any 3rd-party source code. To download the Linux kernel source code and extract the drivers, execute the 'make prepare' rule of the top-level Makefile. The initial version of the 'dde_linux' repository comes with an USB driver. The porting methodology follows the path of the Intel GEM port. Instead of attempting to provide a generic Linux environment that works across drivers, each driver comes with a specially tailored DDE. The DDE consists of Genode-specific implementations of Linux API functions as declared in 'lx_emul.h'. Most of these functions are dummies that must merely be provided to resolve dependencies at the linking stage. They are called by unused code-paths. As of now, the USB driver support UHCI, EHCI on the x86_32 platform. I exposes USB HID devices and USB storage devices via Genode's input-session and block-session respectively. The USB driver is accompanied with two run scripts 'run/usb_hid.run' and 'run/usb_storage.run'.
55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
/*
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* \brief Server-side block session interface
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* \author Stefan Kalkowski
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* \date 2010-07-06
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*/
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/*
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* Copyright (C) 2010-2012 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__BLOCK_SESSION__SERVER_H_
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#define _INCLUDE__BLOCK_SESSION__SERVER_H_
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#include <block_session/block_session.h>
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#include <packet_stream_tx/rpc_object.h>
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#include <base/rpc_server.h>
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namespace Block {
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class Session_rpc_object : public Genode::Rpc_object<Session, Session_rpc_object>
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{
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protected:
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Packet_stream_tx::Rpc_object<Tx> _tx;
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public:
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/**
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* Constructor
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*
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* \param tx_ds dataspace used as communication buffer
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* for the tx packet stream
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* \param ep entry point used for packet-stream channel
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*/
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Session_rpc_object(Genode::Dataspace_capability tx_ds,
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Genode::Rpc_entrypoint &ep)
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: _tx(tx_ds, ep) { }
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/**
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* Return capability to packet-stream channel
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*
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* This function is called by the client via an RPC call at session
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* construction time.
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*/
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Genode::Capability<Tx> _tx_cap() { return _tx.cap(); }
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Tx::Sink *tx_sink() { return _tx.sink(); }
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};
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}
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#endif /* _INCLUDE__BLOCK_SESSION__SERVER_H_ */
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