Stefan Kalkowski
Norman Feske
parent
231d92f88a
commit
8fb8cf1c8b
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/*
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* \brief Regulator-session component
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR__COMPONENT_H_
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#define _INCLUDE__REGULATOR__COMPONENT_H_
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#include <root/component.h>
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#include <regulator_session/rpc_object.h>
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#include <regulator/driver.h>
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namespace Regulator {
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class Session_component;
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class Root;
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}
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class Regulator::Session_component : public Regulator::Session_rpc_object
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{
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private:
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Driver_factory &_driver_factory;
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Driver &_driver;
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public:
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/**
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* Constructor
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*/
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Session_component(Regulator_id regulator_id,
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Driver_factory &driver_factory)
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: Session_rpc_object(regulator_id),
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_driver_factory(driver_factory),
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_driver(_driver_factory.create(regulator_id)) { }
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/**
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* Destructor
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*/
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~Session_component() { _driver_factory.destroy(_driver); }
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/***********************************
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** Regulator session interface **
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***********************************/
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void set_level(unsigned long level) { _driver.set_level(_id, level); }
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unsigned long level() { return _driver.level(_id); }
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void set_state(bool enable) { _driver.set_state(_id, enable); }
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bool state() { return _driver.state(_id); }
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};
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class Regulator::Root :
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public Genode::Root_component<Regulator::Session_component>
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{
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private:
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Driver_factory &_driver_factory;
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Genode::Rpc_entrypoint &_ep;
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protected:
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Session_component *_create_session(const char *args)
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{
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using namespace Genode;
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char reg_name[64];
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Arg_string::find_arg(args, "regulator").string(reg_name,
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sizeof(reg_name), 0);
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size_t ram_quota =
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Arg_string::find_arg(args, "ram_quota").ulong_value(0);
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/* delete ram quota by the memory needed for the session */
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size_t session_size = max((size_t)4096,
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sizeof(Session_component));
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if (ram_quota < session_size)
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throw Root::Quota_exceeded();
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if (!strlen(reg_name))
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throw Root::Invalid_args();
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return new (md_alloc())
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Session_component(regulator_id_by_name(reg_name),
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_driver_factory);
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}
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public:
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Root(Genode::Rpc_entrypoint *session_ep,
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Genode::Allocator *md_alloc,
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Driver_factory &driver_factory)
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: Genode::Root_component<Regulator::Session_component>(session_ep,
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md_alloc),
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_driver_factory(driver_factory), _ep(*session_ep) { }
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};
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#endif /* _INCLUDE__REGULATOR__COMPONENT_H_ */
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/*
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* \brief Regulator-driver interface
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR__DRIVER_H_
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#define _INCLUDE__REGULATOR__DRIVER_H_
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#include <regulator/consts.h>
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namespace Regulator {
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/**
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* Interface to be implemented by the device-specific driver code
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*/
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struct Driver
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{
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virtual void set_level(Regulator_id id, unsigned long level) = 0;
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virtual unsigned long level(Regulator_id id) = 0;
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virtual void set_state(Regulator_id id, bool enable) = 0;
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virtual bool state(Regulator_id id) = 0;
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};
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/**
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* Interface for constructing the driver object
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*/
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struct Driver_factory
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{
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/**
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* Construct new driver
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*/
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virtual Driver &create(Regulator_id regulator) = 0;
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/**
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* Destroy driver
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*/
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virtual void destroy(Driver &driver) = 0;
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};
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}
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#endif /* _REGULATOR__DRIVER_H_ */
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/*
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* \brief Regulator session capability type
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR_SESSION__CAPABILITY_H_
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#define _INCLUDE__REGULATOR_SESSION__CAPABILITY_H_
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#include <base/capability.h>
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#include <regulator_session/regulator_session.h>
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namespace Regulator { typedef Genode::Capability<Session> Session_capability; }
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#endif /* _INCLUDE__REGULATOR_SESSION__CAPABILITY_H_ */
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/*
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* \brief Client-side regulator session interface
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR_SESSION__CLIENT_H_
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#define _INCLUDE__REGULATOR_SESSION__CLIENT_H_
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#include <base/rpc_client.h>
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#include <regulator_session/capability.h>
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namespace Regulator {
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class Session_client : public Genode::Rpc_client<Session>
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{
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public:
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/**
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* Constructor
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*
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* \param session session capability
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*/
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Session_client(Session_capability session)
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: Genode::Rpc_client<Session>(session) { }
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/*********************************
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** Regulator session interface **
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*********************************/
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void set_level(unsigned long level) { call<Rpc_set_level>(level); }
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unsigned long level() { return call<Rpc_level>(); }
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void set_state(bool enable) { call<Rpc_set_state>(enable); }
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bool state() { return call<Rpc_state>(); }
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};
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}
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#endif /* _INCLUDE__REGULATOR_SESSION__CLIENT_H_ */
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/*
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* \brief Connection to regulator service
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR_SESSION__CONNECTION_H_
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#define _INCLUDE__REGULATOR_SESSION__CONNECTION_H_
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#include <regulator_session/client.h>
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#include <regulator/consts.h>
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#include <base/connection.h>
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namespace Regulator {
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struct Connection : Genode::Connection<Session>, Session_client
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{
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/**
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* Constructor
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*
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* \param regulator identifier for the specific regulator
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* \param label string identifier of the client
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*/
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Connection(Regulator_id regulator, const char * label = "")
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: Genode::Connection<Session>(
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session("ram_quota=8K, regulator=\"%s\", label=\"%s\"",
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regulator_name_by_id(regulator), label)),
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Session_client(cap()) { }
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};
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}
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#endif /* _INCLUDE__REGULATOR_SESSION__CONNECTION_H_ */
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/*
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* \brief Abstract regulator session interface.
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR_SESSION__REGULATOR_SESSION_H_
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#define _INCLUDE__REGULATOR_SESSION__REGULATOR_SESSION_H_
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#include <session/session.h>
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namespace Regulator {
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struct Session : public Genode::Session
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{
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static const char *service_name() { return "Regulator"; }
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virtual ~Session() { }
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/**
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* Set regulator specific level
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*/
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virtual void set_level(unsigned long level) = 0;
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/**
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* Returns current regulator level
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*/
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virtual unsigned long level() = 0;
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/**
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* Enable/disable regulator
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*/
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virtual void set_state(bool enable) = 0;
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/**
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* Returns whether regulator is enabled or not
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*/
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virtual bool state() = 0;
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/*******************
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** RPC interface **
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*******************/
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GENODE_RPC(Rpc_set_level, void, set_level, unsigned long);
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GENODE_RPC(Rpc_level, unsigned long, level);
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GENODE_RPC(Rpc_set_state, void, set_state, bool);
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GENODE_RPC(Rpc_state, bool, state);
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GENODE_RPC_INTERFACE(Rpc_set_level, Rpc_level, Rpc_set_state, Rpc_state);
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};
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}
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#endif /* _INCLUDE__REGULATOR_SESSION__REGULATOR_SESSION_H_ */
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/*
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* \brief Server-side block regulator interface
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* \author Stefan Kalkowski
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* \date 2013-06-13
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*/
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/*
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* Copyright (C) 2013 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__REGULATOR_SESSION__SERVER_H_
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#define _INCLUDE__REGULATOR_SESSION__SERVER_H_
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#include <base/rpc_server.h>
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#include <regulator/consts.h>
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#include <regulator_session/regulator_session.h>
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namespace Regulator {
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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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Regulator_id _id; /* regulator identifier */
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public:
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/**
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* Constructor
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*
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* \param id identifies the specific regulator
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*/
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Session_rpc_object(Regulator_id id) : _id(id) { }
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};
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}
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#endif /* _INCLUDE__REGULATOR_SESSION__SERVER_H_ */
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