diff options
Diffstat (limited to 'src/mem/cache/tags')
| -rw-r--r-- | src/mem/cache/tags/SConscript | 1 | ||||
| -rw-r--r-- | src/mem/cache/tags/sector_blk.cc | 131 | ||||
| -rw-r--r-- | src/mem/cache/tags/sector_blk.hh | 178 | ||||
| -rw-r--r-- | src/mem/cache/tags/sector_tags.hh | 2 |
4 files changed, 311 insertions, 1 deletions
diff --git a/src/mem/cache/tags/SConscript b/src/mem/cache/tags/SConscript index 136abac2c..c654bf2eb 100644 --- a/src/mem/cache/tags/SConscript +++ b/src/mem/cache/tags/SConscript @@ -35,4 +35,5 @@ SimObject('Tags.py') Source('base.cc') Source('base_set_assoc.cc') Source('fa_lru.cc') +Source('sector_blk.cc') Source('sector_tags.cc') diff --git a/src/mem/cache/tags/sector_blk.cc b/src/mem/cache/tags/sector_blk.cc new file mode 100644 index 000000000..de9153639 --- /dev/null +++ b/src/mem/cache/tags/sector_blk.cc @@ -0,0 +1,131 @@ +/** + * Copyright (c) 2018 Inria + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Daniel Carvalho + */ + +/** @file + * Implementation of a simple sector block class. Each sector consists of a + * sequence of cache blocks that may or may not be present in the cache. + */ + +#include "mem/cache/tags/sector_blk.hh" + +#include <cassert> + +#include "base/cprintf.hh" +#include "base/logging.hh" + +void +SectorSubBlk::setSectorBlock(SectorBlk* sector_blk) +{ + assert(sector_blk != nullptr); + _sectorBlk = sector_blk; +} + +const SectorBlk* +SectorSubBlk::getSectorBlock() const +{ + return _sectorBlk; +} + +void +SectorSubBlk::setSectorOffset(const int sector_offset) +{ + _sectorOffset = sector_offset; +} + +int +SectorSubBlk::getSectorOffset() const +{ + return _sectorOffset; +} + +Addr +SectorSubBlk::getTag() const +{ + return _sectorBlk->getTag(); +} + +void +SectorSubBlk::insert(const Addr tag, const bool is_secure, + const int src_master_ID, const uint32_t task_ID) +{ + // Make sure it is not overwriting another sector + panic_if((_sectorBlk && _sectorBlk->isValid()) && + ((_sectorBlk->getTag() != tag) || + (_sectorBlk->isSecure() != is_secure)), + "Overwriting valid sector!"); + + CacheBlk::insert(tag, is_secure, src_master_ID, task_ID); + + // Set sector tag + _sectorBlk->setTag(tag); +} + +std::string +SectorSubBlk::print() const +{ + return csprintf("%s sector offset: %#x", CacheBlk::print(), + getSectorOffset()); +} + +bool +SectorBlk::isValid() const +{ + // If any of the blocks in the sector is valid, so is the sector + for (const auto& blk : blks) { + if (blk->isValid()) { + return true; + } + } + return false; +} + +bool +SectorBlk::isSecure() const +{ + // If any of the valid blocks in the sector is secure, so is the sector + for (const auto& blk : blks) { + if (blk->isValid()) { + return blk->isSecure(); + } + } + return false; +} + +void +SectorBlk::setTag(const Addr tag) +{ + _tag = tag; +} + +Addr +SectorBlk::getTag() const +{ + return _tag; +} diff --git a/src/mem/cache/tags/sector_blk.hh b/src/mem/cache/tags/sector_blk.hh new file mode 100644 index 000000000..d252a610f --- /dev/null +++ b/src/mem/cache/tags/sector_blk.hh @@ -0,0 +1,178 @@ +/** + * Copyright (c) 2018 Inria + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Daniel Carvalho + */ + +/** @file + * Definition of a simple sector block class. Each sector consists of a + * sequence of cache blocks that may or may not be present in the cache. + */ + +#ifndef __MEM_CACHE_TAGS_SECTOR_BLK_HH__ +#define __MEM_CACHE_TAGS_SECTOR_BLK_HH__ + +#include <vector> + +#include "mem/cache/cache_blk.hh" +#include "mem/cache/replacement_policies/base.hh" + +class SectorBlk; + +/** + * A sector is composed of sub-blocks, and each sub-block has information + * regarding its sector and a pointer to its sector tag. + */ +class SectorSubBlk : public CacheBlk +{ + private: + /** + * Sector block associated to this block. + */ + SectorBlk* _sectorBlk; + + /** + * The offset of this sub-block in the sector. + */ + int _sectorOffset; + + public: + SectorSubBlk() : CacheBlk(), _sectorBlk(nullptr), _sectorOffset(0) {} + SectorSubBlk(const SectorSubBlk&) = delete; + SectorSubBlk& operator=(const SectorSubBlk&) = delete; + ~SectorSubBlk() {}; + + /** + * Set sector block associated to this block. + * + * @param sector_blk The sector block pointer. + */ + void setSectorBlock(SectorBlk* sector_blk); + + /** + * Get sector block associated to this block. + * + * @return The sector block pointer. + */ + const SectorBlk* getSectorBlock() const; + + /** + * Set offset of this sub-block within the sector. + * + * @param sector_offset The block's offset. + */ + void setSectorOffset(const int sector_offset); + + /** + * Get offset of this sub-block within the sector. + * + * @return sector_offset The block's offset. + */ + int getSectorOffset() const; + + /** + * Get tag associated to this block. + * + * @return The tag value. + */ + Addr getTag() const; + + /** + * Set member variables when a block insertion occurs. Resets reference + * count to 1 (the insertion counts as a reference), and touch block if + * it hadn't been touched previously. Sets the insertion tick to the + * current tick. Does not make block valid. + * + * @param tag Block address tag. + * @param is_secure Whether the block is in secure space or not. + * @param src_master_ID The source requestor ID. + * @param task_ID The new task ID. + */ + void insert(const Addr tag, const bool is_secure, const int src_master_ID, + const uint32_t task_ID) override; + + /** + * Pretty-print sector offset and other CacheBlk information. + * + * @return string with basic state information + */ + std::string print() const override; +}; + +/** + * A Basic Sector block. + * Contains the tag and a list of blocks associated to this sector. + */ +class SectorBlk : public ReplaceableEntry +{ + private: + /** + * Sector tag value. A sector's tag is the tag of all its sub-blocks. + */ + Addr _tag; + + public: + SectorBlk() : ReplaceableEntry(), _tag(MaxAddr) {} + SectorBlk(const SectorBlk&) = delete; + SectorBlk& operator=(const SectorBlk&) = delete; + ~SectorBlk() {}; + + /** List of blocks associated to this sector. */ + std::vector<SectorSubBlk*> blks; + + /** + * Checks that a sector block is valid. + * + * @return True if any of the blocks in the sector is valid. + */ + bool isValid() const; + + /** + * Checks that a sector block is secure. A single secure block suffices + * to imply that the whole sector is secure, as the insertion proccess + * asserts that different secure spaces can't coexist in the same sector. + * + * @return True if any of the blocks in the sector is secure. + */ + bool isSecure() const; + + /** + * Set tag associated to this block. + * + * @param The tag value. + */ + void setTag(const Addr tag); + + /** + * Get tag associated to this block. + * + * @return The tag value. + */ + Addr getTag() const; +}; + +#endif //__MEM_CACHE_TAGS_SECTOR_BLK_HH__ diff --git a/src/mem/cache/tags/sector_tags.hh b/src/mem/cache/tags/sector_tags.hh index 518ab28a9..40df7829d 100644 --- a/src/mem/cache/tags/sector_tags.hh +++ b/src/mem/cache/tags/sector_tags.hh @@ -39,8 +39,8 @@ #include <string> #include <vector> -#include "mem/cache/sector_blk.hh" #include "mem/cache/tags/base.hh" +#include "mem/cache/tags/sector_blk.hh" #include "params/SectorTags.hh" class BaseCache; |