62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* \brief Core-local memory mapping
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* \author Norman Feske
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* \date 2015-05-01
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*/
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/*
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* Copyright (C) 2015-2017 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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#ifndef _CORE__INCLUDE__MAP_LOCAL_H_
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#define _CORE__INCLUDE__MAP_LOCAL_H_
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/* core includes */
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#include <util.h>
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#include <platform.h>
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namespace Genode {
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/**
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* Map physical pages to core-local virtual address range
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*
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* \param from_phys physical source address
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* \param to_virt core-local destination address
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* \param num_pages number of pages to map
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* \param platform pointer to platform object (to avoid deadlocks during
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* early Platform() construction caused by nested calls
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* of platform_specific())
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*
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* \return true on success
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*/
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inline bool map_local(addr_t from_phys, addr_t to_virt, size_t num_pages,
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Platform * platform = nullptr)
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{
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enum { DONT_FLUSH = false };
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try {
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platform = platform ? platform : platform_specific();
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platform->core_vm_space().map(from_phys, to_virt, num_pages,
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DONT_FLUSH);
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} catch (Page_table_registry::Mapping_cache_full) {
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return false;
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}
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return true;
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}
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/**
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* Flush memory mappings from core-local virtual address range
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*/
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inline bool unmap_local(addr_t virt_addr, size_t num_pages)
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{
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platform_specific()->core_vm_space().unmap(virt_addr, num_pages);
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return true;
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}
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}
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#endif /* _CORE__INCLUDE__MAP_LOCAL_H_ */
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