69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
/*
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* \brief Core-local RM session
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* \author Norman Feske
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* \date 2009-10-02
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*/
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/*
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* Copyright (C) 2009-2013 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 <core_rm_session.h>
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#include <platform.h>
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#include <map_local.h>
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using namespace Genode;
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Rm_session::Local_addr
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Core_rm_session::attach(Dataspace_capability ds_cap, size_t size,
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off_t offset, bool use_local_addr,
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Rm_session::Local_addr local_addr,
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bool executable)
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{
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using namespace Codezero;
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Object_pool<Dataspace_component>::Guard ds(_ds_ep->lookup_and_lock(ds_cap));
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if (!ds)
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throw Invalid_dataspace();
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if (size == 0)
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size = ds->size();
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size_t page_rounded_size = (size + get_page_size() - 1) & get_page_mask();
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size_t num_pages = page_rounded_size >> get_page_size_log2();
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if (use_local_addr) {
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PERR("Parameter 'use_local_addr' not supported within core");
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return 0;
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}
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if (offset) {
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PERR("Parameter 'offset' not supported within core");
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return 0;
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}
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/* allocate range in core's virtual address space */
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void *virt_addr;
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if (!platform()->region_alloc()->alloc(page_rounded_size, &virt_addr)) {
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PERR("Could not allocate virtual address range in core of size %zd\n",
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page_rounded_size);
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return false;
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}
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if (!map_local(ds->phys_addr(), (addr_t)virt_addr, num_pages)) {
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PERR("core-local memory mapping failed virt=%lx, phys=%lx\n",
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(addr_t)virt_addr, ds->phys_addr());
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return 0;
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}
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return virt_addr;
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}
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