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path: root/src/mem/protocol
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2012-03-06build scripts: Made minor modifications to reduce build overhead time.Marc Orr
1. --implicit-cache behavior is default. 2. makeEnv in src/SConscript is conditionally called. 3. decider set to MD5-timestamp 4. NO_HTML build option changed to SLICC_HTML (defaults to False)
2012-02-10MESI: Add queues for stalled requestsNilay Vaish
This patch adds support for stalling the requests queued up at different controllers for the MESI CMP directory protocol. Earlier the controllers would recycle the requests using some fixed latency. This results in younger requests getting serviced first at times, and can result in starvation. Instead all the requests that need a particular block to be in a stable state are moved to a separate queue, where they wait till that block returns to a stable state and then they are processed.
2012-01-23O3, Ruby: Forward invalidations from Ruby to O3 CPUNilay Vaish
This patch implements the functionality for forwarding invalidations and replacements from the L1 cache of the Ruby memory system to the O3 CPU. The implementation adds a list of ports to RubyPort. Whenever a replacement or an invalidation is performed, the L1 cache forwards this to all the ports, which is the LSQ in case of the O3 CPU.
2012-01-17Ruby: Change the access permissions for MOESI hammerAndreas Hansson
This patch changes the access permission for the WB_E_W state from Busy to Read_Write to avoid having issues in follow-on patches with functional accesses going through Ruby. This change was made after consultation with all involved parties and is more of a work-around than a fix.
2012-01-10MOESI Hammer: Remove a couple of bugsNilay Vaish
A couple of bugs were observed while building checkpointing support in Ruby. This patch changes transitions to remove those errors.
2012-01-05MESI Coherence Protocol: Fix L2 miss statisticsNilay Vaish
This patch removes calls to uu_ProfileMiss from transitions where the request is satisfied by the L2 cache controller. --HG-- extra : rebase_source : e59fe7c6cd5795c0019cf178dd3b062d73cc2ff5
2011-12-31SLICC: Use pointers for directory entriesNilay Vaish
SLICC uses pointers for cache and TBE entries but not for directory entries. This patch changes the protocols, SLICC and Ruby memory system so that even directory entries are referenced using pointers. --HG-- extra : rebase_source : abeb4ac78033d003153751f216fd1948251fcfad
2011-12-01MOESI_hammer: fixed L2 to L1 infinite stalls and deadlockBrad Beckmann
--HG-- extra : rebase_source : 90f217f28e195a8cee5d64b25c913b452d818676
2011-11-22Remove standard_1level_CMP-protocol.sm include statement from NetworkTushar Krishna
--HG-- extra : rebase_source : 51a2dd4bb643e3dc5b0218a6190cf5c1989f9691
2011-11-04MESI Protocol: Add functions for profiling missesNilay Vaish
2011-11-03Protocol: Remove standard one and two level filesNilay Vaish
2011-11-03Ruby: Remove some unused typedefsNilay Vaish
This patch removes some of the unused typedefs. It also moves some of the typedefs from Global.hh to TypeDefines.hh. The patch also eliminates the file NodeID.hh.
2011-10-28Ruby: Reorganize mapping of componentsNilay Vaish
In RubySlicc_ComponentMapping.hh, certain '#define's have been used for mapping MachineType to GenericMachineType. These '#define's are being eliminated and the code will now be generated by SLICC instead. Also are being eliminated some of the unused functions from RubySlicc_ComponentMapping.sm.
2011-09-01Functional Accesses: Update states to support Broadcast/Snooping protocols.Lisa Hsu
In the current implementation of Functional Accesses, it's very hard to implement broadcast or snooping protocols where the memory has no idea if it has exclusive access to a cache block or not. Without this knowledge, making sure the RW vs. RO permissions are right are next to impossible. So we add a new state called Backing_Store to enable the conveyance that this is the backup storage for a block, so that it can be written if it is the only possibly RW block in the system, or written even if there is another RW block in the system, without causing problems. Also, a small change to actually set the m_name field for each Controller so that debugging can be easier. Now you can access a controller's name just by controller->getName().
2011-08-08BuildEnv: Eliminate RUBY as build environment variableNilay Vaish
This patch replaces RUBY with PROTOCOL in all the SConscript files as the environment variable that decides whether or not certain components of the simulator are compiled.
2011-08-03Ruby: Remove files and includes not in useNilay Vaish
2011-08-02Scons: Drop RUBY as compile time option.Nilay Vaish
This patch drops RUBY as a compile time option. Instead the PROTOCOL option is used to figure out whether or not to build Ruby. If the specified protocol is 'None', then Ruby is not compiled.
2011-07-06ruby: added generic dma machineBrad Beckmann
2011-07-06MOESI_hammer: Fixed uniprocessor DMA bugBrad Beckmann
2011-07-05slicc: add a protocol statement and an include statementNathan Binkert
All protocols must specify their name The include statement allows any file to include another file.
2011-07-05slicc: cleanup slicc code and make it less verboseNathan Binkert
2011-07-03Network_test: Conform it with functional access changes in RubyNilay Vaish
Addition of functional access support to Ruby necessitated some changes to the way coherence protocols are written. I had forgotten to update the Network_test protocol. This patch makes those updates.
2011-06-30Ruby: Add support for functional accessesBrad Beckmann ext:(%2C%20Nilay%20Vaish%20%3Cnilay%40cs.wisc.edu%3E)
This patch rpovides functional access support in Ruby. Currently only the M5Port of RubyPort supports functional accesses. The support for functional through the PioPort will be added as a separate patch.
2011-06-08Ruby: Correctly set access permissions for directory entriesNilay Vaish
The access permissions for the directory entries are not being set correctly. This is because pointers are not used for handling directory entries. function. get and set functions for access permissions have been added to the Controller state machine. The changePermission() function provided by the AbstractEntry and AbstractCacheEntry classes has been exposed to SLICC code once again. The set_permission() functionality has been removed. NOTE: Each protocol will have to define these get and set functions in order to compile successfully.
2011-05-20slicc: added vnet_type to MI_exampleTushar Krishna
Forgot to add this to MI_example in my previous patch.
2011-05-18slicc: added vnet_type field to identify response vnets from othersTushar Krishna
Identifying response vnets versus other vnets will allow garnet to determine which vnets will carry data packets, and which will carry ctrl packets, and use appropriate buffer sizes (since data packets are larger than ctrl packets). This in turn allows the orion power model to accurately estimate buffer power.
2011-04-28network: convert links & switches to first class C++ SimObjectsBrad Beckmann
This patch converts links and switches from second class simobjects that were virtually ignored by the networks (both simple and Garnet) to first class simobjects that directly correspond to c++ ojbects manipulated by the topology and network classes. This is especially true for Garnet, where the links and switches directly correspond to specific C++ objects. By making this change, many aspects of the Topology class were simplified. --HG-- rename : src/mem/ruby/network/Network.cc => src/mem/ruby/network/BasicLink.cc rename : src/mem/ruby/network/Network.hh => src/mem/ruby/network/BasicLink.hh rename : src/mem/ruby/network/Network.cc => src/mem/ruby/network/garnet/fixed-pipeline/GarnetLink_d.cc rename : src/mem/ruby/network/Network.hh => src/mem/ruby/network/garnet/fixed-pipeline/GarnetLink_d.hh rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/fixed-pipeline/GarnetLink_d.py rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/fixed-pipeline/GarnetRouter_d.py rename : src/mem/ruby/network/Network.cc => src/mem/ruby/network/garnet/flexible-pipeline/GarnetLink.cc rename : src/mem/ruby/network/Network.hh => src/mem/ruby/network/garnet/flexible-pipeline/GarnetLink.hh rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/flexible-pipeline/GarnetLink.py rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/flexible-pipeline/GarnetRouter.py
2011-04-01hammer: fixed dma uniproc errorBrad Beckmann
Fixed an error reguarding DMA for uninprocessor systems. Basically removed an overly agressive optimization that lead to inconsistent state between the cache and the directory.
2011-03-31CacheMemory: add allocateVoid() that is == allocate() but no return value.Lisa Hsu
This function duplicates the functionality of allocate() exactly, except that it does not return a return value. In protocols where you just want to allocate a block but do not want that block to be your implicitly passed cache_entry, use this function. Otherwise, SLICC will complain if you do not consume the pointer returned by allocate(), and if you do a dummy assignment Entry foo := cache.allocate(address), the C++ compiler will complain of an unused variable. This is kind of a hack to get around those issues, but suggestions welcome.
2011-03-31Ruby: Add new object called WireBuffer to mimic a Wire.Lisa Hsu
This is a substitute for MessageBuffers between controllers where you don't want messages to actually go through the Network, because requests/responses can always get reordered wrt to one another (even if you turn off Randomization and turn on Ordered) because you are, after all, going through a network with contention. For systems where you model multiple controllers that are very tightly coupled and do not actually go through a network, it is a pain to have to write a coherence protocol to account for mixed up request/response orderings despite the fact that it's completely unrealistic. This is *not* meant as a substitute for real MessageBuffers when messages do in fact go over a network.
2011-03-31Ruby: pass Packet->Req->contextId() to Ruby.Lisa Hsu
It is useful for Ruby to understand from whence request packets came. This has all request packets going into Ruby pass the contextId value, if it exists. This supplants the old libruby proc_id value passed around in all the Messages, so I've also removed the unused unsigned proc_id; member generated by SLICC for all Message types.
2011-03-28This patch supports cache flushing in MOESI_hammerSomayeh Sardashti
2011-03-22Ruby: Remove CacheMsg class from SLICCNilay Vaish
The goal of the patch is to do away with the CacheMsg class currently in use in coherence protocols. In place of CacheMsg, the RubyRequest class will used. This class is already present in slicc_interface/RubyRequest.hh. In fact, objects of class CacheMsg are generated by copying values from a RubyRequest object.
2011-03-21This patch adds the network tester for simple and garnet networks.Tushar Krishna
The tester code is in testers/networktest. The tester can be invoked by configs/example/ruby_network_test.py. A dummy coherence protocol called Network_test is also addded for network-only simulations and testing. The protocol takes in messages from the tester and just pushes them into the network in the appropriate vnet, without storing any state.
2011-03-19Ruby: Convert CacheRequestType to RubyRequestTypeNilay Vaish
This patch converts CacheRequestType to RubyRequestType so that both the protocol dependent and independent code makes use of the same request type.
2011-03-19Ruby: Convert AccessModeType to RubyAccessModeNilay Vaish
This patch converts AccessModeType to RubyAccessMode so that both the protocol dependent and independent code uses the same access mode.
2011-03-19MOESI_hammer: minor fixes to full-bit dirBrad Beckmann
2011-03-19MOESI_hammer: fixed dma bug with shared dataBrad Beckmann
2011-03-19MOESI_CMP_directory: significant dma bug fixesBrad Beckmann
2011-03-18SLICC: Remove external_type for structuresNilay Vaish
In SLICC, in order to define a type a data type for which it should not generate any code, the keyword external_type is used. For those data types for which code should be generated, the keyword structure is used. This patch eliminates the use of keyword external_type for defining structures. structure key word can now have an optional attribute external, which would be used for figuring out whether or not to generate the code for this structure. Also, now structures can have functions as well data members in them.
2011-03-18SLICC: Remove the keyword wake_up_dependentsNilay Vaish
In order to add stall and wait facility for protocols, a keyword wake_up_dependents was introduced. This patch removes the keyword, instead this functionality is now implemented as function call.
2011-03-18SLICC: Remove the keyword wake_up_all_dependentsNilay Vaish
In order to add stall and wait facility for protocols, a keyword wake_up_all_dependents was introduced. This patch removes the keyword, instead this functionality is now implemented as function call.
2011-03-17Ruby: expose a simple mod function in slicc interface.Lisa Hsu
2011-03-03SCons: Clean up some inconsistent capitalization in scons options.Gabe Black
2011-02-23ruby: automate permission settingBrad Beckmann
This patch integrates permissions with cache and memory states, and then automates the setting of permissions within the generated code. No longer does one need to manually set the permissions within the setState funciton. This patch will faciliate easier functional access support by always correctly setting permissions for both cache and memory states. --HG-- rename : src/mem/slicc/ast/EnumDeclAST.py => src/mem/slicc/ast/StateDeclAST.py rename : src/mem/slicc/ast/TypeFieldEnumAST.py => src/mem/slicc/ast/TypeFieldStateAST.py
2011-02-23MOESI_hammer: cache probe address clean upBrad Beckmann
2011-02-23ruby: cleaned up access permission enumBrad Beckmann
2011-02-23ruby: removed unsupported protocol filesBrad Beckmann
2011-02-22m5: merged in hammer fixBrad Beckmann
2011-02-19Ruby: Machine Type missing in MOESI CMP directory protocolNilay Vaish
In certain actions of the L1 cache controller, while creating an outgoing message, the machine type was not being set. This results in a segmentation fault when trace is collected. Joseph Pusudesris provided his patch for fixing this issue.