2014-04-28 21:31:57 +02:00
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/*
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* \brief hw-specific implementation of core-local RM session
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* \author Norman Feske
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* \author Stefan Kalkowski
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* \date 2014-02-26
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*
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* Taken from OKL4-specific imlementation
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*/
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/*
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* Copyright (C) 2014 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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/* core includes */
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#include <platform.h>
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2016-04-15 15:19:22 +02:00
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#include <core_region_map.h>
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2014-04-28 21:31:57 +02:00
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#include <map_local.h>
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#include <util.h>
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#include <base/heap.h>
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using namespace Genode;
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2016-04-15 15:19:22 +02:00
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Region_map::Local_addr
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Core_region_map::attach(Dataspace_capability ds_cap, size_t size,
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2014-04-28 21:31:57 +02:00
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off_t offset, bool use_local_addr,
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2016-04-15 15:19:22 +02:00
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Region_map::Local_addr, bool executable)
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2014-04-28 21:31:57 +02:00
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{
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2015-08-10 13:34:16 +02:00
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auto lambda = [&] (Dataspace_component *ds) -> Local_addr {
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if (!ds)
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throw Invalid_dataspace();
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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if (size == 0)
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size = ds->size();
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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size_t page_rounded_size = (size + get_page_size() - 1) & get_page_mask();
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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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 nullptr;
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}
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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if (offset) {
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PERR("Parameter 'offset' not supported within core");
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return nullptr;
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}
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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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_aligned(page_rounded_size,
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&virt_addr,
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2016-05-11 18:21:47 +02:00
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get_page_size_log2()).ok()) {
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2015-08-10 13:34:16 +02:00
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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 nullptr;
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}
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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/* map the dataspace's physical pages to corresponding virtual addresses */
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unsigned num_pages = page_rounded_size >> get_page_size_log2();
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Page_flags const flags = Page_flags::apply_mapping(ds->writable(),
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ds->cacheability(),
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2016-05-11 18:21:47 +02:00
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ds->io_mem());
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2015-08-10 13:34:16 +02:00
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if (!map_local(ds->phys_addr(), (addr_t)virt_addr, num_pages, flags))
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return nullptr;
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2014-04-28 21:31:57 +02:00
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2015-08-10 13:34:16 +02:00
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return virt_addr;
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};
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2016-04-20 21:12:57 +02:00
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return _ep.apply(ds_cap, lambda);
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2014-04-28 21:31:57 +02:00
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}
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2016-04-20 21:12:57 +02:00
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void Core_region_map::detach(Local_addr) { }
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