83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2017, Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "runtime/helpers/aligned_memory.h"
|
|
#include "runtime/memory_manager/address_mapper.h"
|
|
|
|
#include <inttypes.h>
|
|
#include <iostream>
|
|
|
|
namespace OCLRT {
|
|
|
|
AddressMapper::AddressMapper() : nextPage(1) {
|
|
}
|
|
AddressMapper::~AddressMapper() {
|
|
for (auto &m : mapping)
|
|
delete m;
|
|
}
|
|
uint32_t AddressMapper::map(void *vm, size_t size) {
|
|
void *aligned = alignDown(vm, MemoryConstants::pageSize);
|
|
size_t alignedSize = alignSizeWholePage(vm, size);
|
|
|
|
auto it = mapping.begin();
|
|
for (; it != mapping.end(); it++) {
|
|
if ((*it)->vm == aligned) {
|
|
if ((*it)->size == alignedSize) {
|
|
return (*it)->ggtt;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (it != mapping.end()) {
|
|
delete *it;
|
|
mapping.erase(it);
|
|
}
|
|
uint32_t numPages = static_cast<uint32_t>(alignedSize / MemoryConstants::pageSize);
|
|
auto tmp = nextPage.fetch_add(numPages);
|
|
|
|
MapInfo *m = new MapInfo;
|
|
m->vm = aligned;
|
|
m->size = alignedSize;
|
|
m->ggtt = static_cast<uint32_t>(tmp * MemoryConstants::pageSize);
|
|
|
|
mapping.push_back(m);
|
|
|
|
return m->ggtt;
|
|
}
|
|
|
|
void AddressMapper::unmap(void *vm) {
|
|
void *aligned = alignDown(vm, MemoryConstants::pageSize);
|
|
|
|
auto it = mapping.begin();
|
|
for (; it != mapping.end(); it++) {
|
|
if ((*it)->vm == aligned) {
|
|
break;
|
|
}
|
|
}
|
|
if (it != mapping.end()) {
|
|
delete *it;
|
|
mapping.erase(it);
|
|
}
|
|
}
|
|
}
|