89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
/*
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* \brief Pager support for Fiasco
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* \author Christian Helmuth
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* \date 2006-06-14
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*/
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/*
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* Copyright (C) 2006-2017 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 Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <base/log.h>
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/* core includes */
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#include <ipc_pager.h>
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#include <pager.h>
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/* base-internal includes */
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#include <base/internal/native_thread.h>
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#include <base/internal/capability_space_tpl.h>
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namespace Fiasco {
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#include <l4/sys/ipc.h>
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#include <l4/sys/syscalls.h>
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}
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using namespace Genode;
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using namespace Fiasco;
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/***************
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** Ipc_pager **
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***************/
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void Ipc_pager::wait_for_fault()
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{
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l4_msgdope_t result;
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do {
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l4_ipc_wait(&_last,
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L4_IPC_SHORT_MSG, &_pf_addr, &_pf_ip,
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L4_IPC_NEVER, &result);
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if (L4_IPC_IS_ERROR(result))
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error(__func__, ": IPC error ", Hex(L4_IPC_ERROR(result)));
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} while (L4_IPC_IS_ERROR(result));
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}
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void Ipc_pager::reply_and_wait_for_fault()
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{
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l4_msgdope_t result;
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l4_ipc_reply_and_wait(_last,
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L4_IPC_SHORT_FPAGE, _reply_mapping.dst_addr(),
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_reply_mapping.fpage().fpage, &_last,
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L4_IPC_SHORT_MSG, &_pf_addr, &_pf_ip,
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L4_IPC_SEND_TIMEOUT_0, &result);
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if (L4_IPC_IS_ERROR(result)) {
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error(__func__, ": IPC error ", Hex(L4_IPC_ERROR(result)));
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/* ignore all errors and wait for next proper message */
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wait_for_fault();
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}
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}
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void Ipc_pager::acknowledge_wakeup()
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{
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/* answer wakeup call from one of core's region-manager sessions */
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l4_msgdope_t result;
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l4_ipc_send(_last, L4_IPC_SHORT_MSG, 0, 0, L4_IPC_SEND_TIMEOUT_0, &result);
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}
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/**********************
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** Pager Entrypoint **
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**********************/
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Untyped_capability Pager_entrypoint::_pager_object_cap(unsigned long badge)
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{
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return Capability_space::import(native_thread().l4id, Rpc_obj_key(badge));
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}
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