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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().
2011-08-29SLICC: Pass arguments by referenceNilay Vaish
Arguments to functions were being passed by value. This patch changes SLICC so that arguments are passed by reference.
2011-07-27SLICC: Put functions of a controller in its .cc fileNilay Vaish
Currently, functions associated with a controller go into separate files. This patch puts all the functions in the controller's .cc file. This should hopefully take away some time from compilation.
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
2011-07-05grammar: better encapsulation of a grammar and parsingNathan Binkert
This makes it possible to use the grammar multiple times and use the multiple instances concurrently. This makes implementing an include statement as part of a grammar possible.
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.
2011-06-03SLICC: Remove machine name as prefix to functionsNilay Vaish
Currently, the machine name is appended before any of the functions defined with in the sm files. This is not necessary and it also means that these functions cannot be used outside the sm files. This patch does away with the prefixes. Note that the generated C++ files in which the code for these functions is present are still named such that the machine name is the prefix.
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.
2011-05-02ruby: dbg: use system ticks instead of cyclesKorey Sewell
2011-04-20fix some build problems from prior changesetsNathan Binkert
2011-04-15trace: reimplement the DTRACE function so it doesn't use a vectorNathan Binkert
At the same time, rename the trace flags to debug flags since they have broader usage than simply tracing. This means that --trace-flags is now --debug-flags and --trace-help is now --debug-help
2011-04-15includes: sort all includesNathan Binkert
2011-03-31Ruby: Simplify SLICC and Entry/TBE handling.Lisa Hsu
Before this changeset, all local variables of type Entry and TBE were considered to be pointers, but an immediate use of said variables would not be automatically deferenced in SLICC-generated code. Instead, deferences occurred when such variables were passed to functions, and were automatically dereferenced in the bodies of the functions (e.g. the implicitly passed cache_entry). This is a more general way to do it, which leaves in place the assumption that parameters to functions and local variables of type AbstractCacheEntry and TBE are always pointers, but instead of dereferencing to access member variables on a contextual basis, the dereferencing automatically occurs on a type basis at the moment a member is being accessed. So, now, things you can do that you couldn't before include: Entry foo := getCacheEntry(address); cache_entry.DataBlk := foo.DataBlk; or cache_entry.DataBlk := getCacheEntry(address).DataBlk; or even cache_entry.DataBlk := static_cast(Entry, pointer, cache.lookup(address)).DataBlk;
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: enable multiple sequencers in one controller.Lisa Hsu
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.
2011-03-31Ruby: Bug in SLICC forgot semicolon at end of code.Lisa Hsu
2011-03-20SLICC: Remove WakeUp* import calls from ast/__init__.pyNilay Vaish
I had recently committed a patch that removed the WakeUp*.py files from the slicc/ast directory. I had forgotten to remove the import calls for these files from slicc/ast/__init__.py. This resulted in error while running regressions on zizzer. This patch does the needful.
2011-03-19slicc: improved invalid transition messageBrad 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.
2011-02-23ruby: 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: extend dprintfs for RubyGenerated TraceFlagKorey Sewell
"executing" isnt a very descriptive debug message and in going through the output you get multiple messages that say "executing" but nothing to help you parse through the code/execution. So instead, at least print out the name of the action that is taking place in these functions.
2011-02-06ruby: support to stallAndWait the mandatory queueBrad Beckmann
By stalling and waiting the mandatory queue instead of recycling it, one can ensure that no incoming messages are starved when the mandatory queue puts signficant of pressure on the L1 cache controller (i.e. the ruby memtester). --HG-- rename : src/mem/slicc/ast/WakeUpDependentsStatementAST.py => src/mem/slicc/ast/WakeUpAllDependentsStatementAST.py
2011-01-17Change interface between coherence protocols and CacheMemoryNilay Vaish
The purpose of this patch is to change the way CacheMemory interfaces with coherence protocols. Currently, whenever a cache controller (defined in the protocol under consideration) needs to carry out any operation on a cache block, it looks up the tag hash map and figures out whether or not the block exists in the cache. In case it does exist, the operation is carried out (which requires another lookup). As observed through profiling of different protocols, multiple such lookups take place for a given cache block. It was noted that the tag lookup takes anything from 10% to 20% of the simulation time. In order to reduce this time, this patch is being posted. I have to acknowledge that the many of the thoughts that went in to this patch belong to Brad. Changes to CacheMemory, TBETable and AbstractCacheEntry classes: 1. The lookup function belonging to CacheMemory class now returns a pointer to a cache block entry, instead of a reference. The pointer is NULL in case the block being looked up is not present in the cache. Similar change has been carried out in the lookup function of the TBETable class. 2. Function for setting and getting access permission of a cache block have been moved from CacheMemory class to AbstractCacheEntry class. 3. The allocate function in CacheMemory class now returns pointer to the allocated cache entry. Changes to SLICC: 1. Each action now has implicit variables - cache_entry and tbe. cache_entry, if != NULL, must point to the cache entry for the address on which the action is being carried out. Similarly, tbe should also point to the transaction buffer entry of the address on which the action is being carried out. 2. If a cache entry or a transaction buffer entry is passed on as an argument to a function, it is presumed that a pointer is being passed on. 3. The cache entry and the tbe pointers received __implicitly__ by the actions, are passed __explicitly__ to the trigger function. 4. While performing an action, set/unset_cache_entry, set/unset_tbe are to be used for setting / unsetting cache entry and tbe pointers respectively. 5. is_valid() and is_invalid() has been made available for testing whether a given pointer 'is not NULL' and 'is NULL' respectively. 6. Local variables are now available, but they are assumed to be pointers always. 7. It is now possible for an object of the derieved class to make calls to a function defined in the interface. 8. An OOD token has been introduced in SLICC. It is same as the NULL token used in C/C++. If you are wondering, OOD stands for Out Of Domain. 9. static_cast can now taken an optional parameter that asks for casting the given variable to a pointer of the given type. 10. Functions can be annotated with 'return_by_pointer=yes' to return a pointer. 11. StateMachine has two new variables, EntryType and TBEType. EntryType is set to the type which inherits from 'AbstractCacheEntry'. There can only be one such type in the machine. TBEType is set to the type for which 'TBE' is used as the name. All the protocols have been modified to conform with the new interface.
2011-01-10ruby: get rid of ruby's Debug.hhNathan Binkert
Get rid of the Debug class Get rid of ASSERT and use assert Use DPRINTFR for ProtocolTrace
2010-12-22This patch removes the WARN_* and ERROR_* from src/mem/ruby/common/Debug.hh ↵Nilay Vaish
file. These statements have been replaced with warn(), panic() and fatal() defined in src/base/misc.hh
2010-12-08ruby: remove Ruby asserts for m5.fastBrad Beckmann
This diff is for changing the way ASSERT is handled in Ruby. m5.fast compiles out the assert statements by using the macro NDEBUG. Ruby uses the macro RUBY_NO_ASSERT to do so. This macro has been removed and NDEBUG has been put in its place.
2010-12-01ruby: Converted old ruby debug calls to M5 debug callsNilay Vaish
This patch developed by Nilay Vaish converts all the old GEMS-style ruby debug calls to the appropriate M5 debug calls.
2010-09-09code_formatter: make it easier to insert whitespaceNathan Binkert
a newline by just doing "code()". indent() and dedent() now take a "count" parameter to indent/dedent multiple levels.
2010-08-20ruby: Stall and wait input messages instead of recyclingBrad Beckmann
This patch allows messages to be stalled in their input buffers and wait until a corresponding address changes state. In order to make this work, all in_ports must be ranked in order of dependence and those in_ports that may unblock an address, must wake up the stalled messages. Alot of this complexity is handled in slicc and the specification files simply annotate the in_ports. --HG-- rename : src/mem/slicc/ast/CheckAllocateStatementAST.py => src/mem/slicc/ast/StallAndWaitStatementAST.py rename : src/mem/slicc/ast/CheckAllocateStatementAST.py => src/mem/slicc/ast/WakeUpDependentsStatementAST.py
2010-08-20ruby: Recycle latency fix for hammerBrad Beckmann
Patch allows each individual message buffer to have different recycle latencies and allows the overall recycle latency to be specified at the cmd line. The patch also adds profiling info to make sure no one processor's requests are recycled too much.
2010-08-20slicc: Consolidated the protocol stats printingBrad Beckmann
Created a separate ProfileDumper that consolidates the generated stats for each controller of a certain type.
2010-06-10ruby: get rid of Vector and use STLNathan Binkert
add a couple of helper functions to base for deleteing all pointers in a container and outputting containers to a stream
2010-06-10ruby: get rid of RefCnt and Allocator stuff use base/refcnt.hhNathan Binkert
This was somewhat tricky because the RefCnt API was somewhat odd. The biggest confusion was that the the RefCnt object's constructor that took a TYPE& cloned the object. I created an explicit virtual clone() function for things that took advantage of this version of the constructor. I was conservative and used clone() when I was in doubt of whether or not it was necessary. I still think that there are probably too many instances of clone(), but hopefully not too many. I converted several instances of const MsgPtr & to a simple MsgPtr. If the function wants to avoid the overhead of creating another reference, then it should just use a regular pointer instead of a ref counting ptr. There were a couple of instances where refcounted objects were created on the stack. This seems pretty dangerous since if you ever accidentally make a reference to that object with a ref counting pointer, bad things are bound to happen.
2010-04-02ruby: get rid of gems_common/util.hh and .cc and use stuff in src/baseNathan Binkert
2010-04-02ruby: get "using namespace" out of headersNathan Binkert
In addition to obvious changes, this required a slight change to the slicc grammar to allow types with :: in them. Otherwise slicc barfs on std::string which we need for the headers that slicc generates.
2010-03-21ruby: Ruby support for sparse memoryBrad Beckmann
The patch includes direct support for the MI example protocol.
2010-03-12slicc: Change the code generation so that the generated code is easier to readNathan Binkert
2010-03-10ruby: get rid of std-includes.hhNathan Binkert
Do not use "using namespace std;" in headers Include header files as needed
2010-03-10slicc: have a central mechanism for creating a code_formatter.Nathan Binkert
This makes it easier to add global variables like protocol
2010-02-10ruby: Fixed slicc to initialize the m_is_blocking flagBrad Beckmann
2010-01-29ruby: Allows boolean and string defaults for StateMachine parametersBrad Beckmann
2010-01-29ruby: Added Cache and MemCntrl profiler callsBrad Beckmann
2010-01-29ruby: Converted MOESI_hammer dma cntrl to new config systemBrad Beckmann
2010-01-29ruby: Ruby changes required to use the python config systemBrad Beckmann
This patch includes the necessary changes to connect ruby objects using the python configuration system. Mainly it consists of removing unnecessary ruby object pointers and connecting the necessary object pointers using the generated param objects. This patch includes the slicc changes necessary to connect generated ruby objects together using the python configuraiton system.