62b1c55399
This patch integrates the functionality of the former CAP session into the PD session and unifies the approch of supplementing the generic PD session with kernel-specific functionality. The latter is achieved by the new 'Native_pd' interface. The kernel-specific interface can be obtained via the Pd_session::native_pd accessor function. The kernel-specific interfaces are named Nova_native_pd, Foc_native_pd, and Linux_native_pd. The latter change allowed for to deduplication of the pd_session_component code among the various base platforms. To retain API compatibility, we keep the 'Cap_session' and 'Cap_connection' around. But those classes have become mere wrappers around the PD session interface. Issue #1841
124 lines
2.8 KiB
C++
124 lines
2.8 KiB
C++
/*
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* \brief Pager implementations that are specific for the HW-core
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* \author Martin Stein
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* \date 2012-03-29
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*/
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/*
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* Copyright (C) 2012-2013 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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/* Genode includes */
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#include <base/printf.h>
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/* core includes*/
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#include <pager.h>
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#include <platform_thread.h>
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#include <platform_pd.h>
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using namespace Genode;
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/*************
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** Mapping **
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*************/
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Mapping::Mapping(addr_t const va, addr_t const pa,
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Cache_attribute const c, bool const io,
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unsigned const sl2, bool const w)
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:
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virt_address(va), phys_address(pa), cacheable(c),
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io_mem(io), size_log2(sl2), writable(w)
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{ }
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Mapping::Mapping()
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:
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virt_address(0), phys_address(0), cacheable(CACHED),
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io_mem(0), size_log2(0), writable(0)
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{ }
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void Mapping::prepare_map_operation() { }
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/***************
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** Ipc_pager **
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***************/
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addr_t Ipc_pager::fault_ip() const { return _fault.ip; }
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addr_t Ipc_pager::fault_addr() const { return _fault.addr; }
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bool Ipc_pager::is_write_fault() const { return _fault.writes; }
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void Ipc_pager::set_reply_mapping(Mapping m) { _mapping = m; }
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/******************
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** Pager_object **
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******************/
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Thread_capability Pager_object::thread_cap() const { return _thread_cap; }
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void Pager_object::thread_cap(Thread_capability const & c) { _thread_cap = c; }
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void Pager_object::wake_up()
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{
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using Object = Kernel_object<Kernel::Signal_context>;
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Kernel::ack_signal(Object::_cap.dst());
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}
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void Pager_object::start_paging(Kernel::Signal_receiver * receiver)
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{
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using Object = Kernel_object<Kernel::Signal_context>;
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using Entry = Object_pool<Pager_object>::Entry;
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create(receiver, (unsigned long)this);
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Entry::cap(Object::_cap);
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}
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void Pager_object::exception_handler(Signal_context_capability) { }
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void Pager_object::unresolved_page_fault_occurred()
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{
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Platform_thread * const pt = (Platform_thread *)badge();
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if (pt && pt->pd())
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PERR("%s -> %s: unresolved pagefault at ip=%lx sp=%lx fault address=%lx",
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pt->pd()->label(), pt->label(), pt->kernel_object()->ip,
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pt->kernel_object()->sp, pt->kernel_object()->fault_addr());
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}
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Pager_object::Pager_object(unsigned const badge, Affinity::Location)
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: Object_pool<Pager_object>::Entry(Kernel_object<Kernel::Signal_context>::_cap),
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_badge(badge)
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{ }
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/**********************
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** Pager_entrypoint **
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**********************/
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void Pager_entrypoint::dissolve(Pager_object * const o)
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{
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remove(o);
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}
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Pager_entrypoint::Pager_entrypoint(Rpc_cap_factory &)
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: Thread<PAGER_EP_STACK_SIZE>("pager_ep"),
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Kernel_object<Kernel::Signal_receiver>(true)
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{ start(); }
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Pager_capability Pager_entrypoint::manage(Pager_object * const o)
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{
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o->start_paging(kernel_object());
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insert(o);
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return reinterpret_cap_cast<Pager_object>(o->cap());
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}
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