diff options
Diffstat (limited to 'src/cpu/testers/traffic_gen/traffic_gen.hh')
| -rw-r--r-- | src/cpu/testers/traffic_gen/traffic_gen.hh | 399 |
1 files changed, 4 insertions, 395 deletions
diff --git a/src/cpu/testers/traffic_gen/traffic_gen.hh b/src/cpu/testers/traffic_gen/traffic_gen.hh index fa08f4461..6793e24b6 100644 --- a/src/cpu/testers/traffic_gen/traffic_gen.hh +++ b/src/cpu/testers/traffic_gen/traffic_gen.hh @@ -38,14 +38,14 @@ * Andreas Hansson * Sascha Bischoff */ -#ifndef __MEM_TRAFFIC_GEN_HH__ -#define __MEM_TRAFFIC_GEN_HH__ +#ifndef __CPU_TRAFFIC_GEN_TRAFFIC_GEN_HH__ +#define __CPU_TRAFFIC_GEN_TRAFFIC_GEN_HH__ #include "base/hashmap.hh" +#include "cpu/testers/traffic_gen/generators.hh" #include "mem/mem_object.hh" #include "mem/qport.hh" #include "params/TrafficGen.hh" -#include "proto/protoio.hh" /** * The traffic generator is a master module that generates stimuli for @@ -159,397 +159,6 @@ class TrafficGen : public MemObject double p; }; - /** Base class for all generator states */ - class BaseGen - { - - protected: - - /** Port used to send requests */ - QueuedMasterPort& port; - - /** The MasterID used for generating requests */ - const MasterID masterID; - - /** - * Create a new request and associated packet and schedule - * it to be sent in the current tick. - * - * @param addr Physical address to use - * @param size Size of the request - * @param cmd Memory command to send - */ - void send(Addr addr, unsigned size, const MemCmd& cmd); - - public: - - /** Time to spend in this state */ - const Tick duration; - - /** - * Create a base generator. - * - * @param _port port used to send requests - * @param master_id MasterID set on each request - * @param _duration duration of this state before transitioning - */ - BaseGen(QueuedMasterPort& _port, MasterID master_id, - Tick _duration); - - virtual ~BaseGen() { } - - /** - * Get the name, useful for DPRINTFs. - * - * @return the port name - */ - std::string name() const { return port.name(); } - - /** - * Enter this generator state. - */ - virtual void enter() = 0; - - /** - * Execute this generator state. - */ - virtual void execute() = 0; - - /** - * Exit this generator state. By default do nothing. - */ - virtual void exit() { }; - - /** - * Determine the next execute tick. MaxTick means that - * there will not be any further event in the current - * activation cycle of the state. - * - * @return next tick when the state should be executed - */ - virtual Tick nextExecuteTick() = 0; - - }; - - /** - * The idle generator does nothing. - */ - class IdleGen : public BaseGen - { - - public: - - IdleGen(QueuedMasterPort& _port, MasterID master_id, - Tick _duration) - : BaseGen(_port, master_id, _duration) - { } - - void enter() { } - - void execute() { } - - Tick nextExecuteTick() { return MaxTick; } - }; - - /** - * The linear generator generates sequential requests from a - * start to an end address, with a fixed block size. A - * fraction of the requests are reads, as determined by the - * read percent. There is an optional data limit for when to - * stop generating new requests. - */ - class LinearGen : public BaseGen - { - - public: - - /** - * Create a linear address sequence generator. Set - * min_period == max_period for a fixed inter-transaction - * time. - * - * @param _port port used to send requests - * @param master_id MasterID set on each request - * @param _duration duration of this state before transitioning - * @param start_addr Start address - * @param end_addr End address - * @param _blocksize Size used for transactions injected - * @param min_period Lower limit of random inter-transaction time - * @param max_period Upper limit of random inter-transaction time - * @param read_percent Percent of transactions that are reads - * @param data_limit Upper limit on how much data to read/write - */ - LinearGen(QueuedMasterPort& _port, MasterID master_id, - Tick _duration, Addr start_addr, Addr end_addr, - Addr _blocksize, Tick min_period, Tick max_period, - uint8_t read_percent, Addr data_limit) - : BaseGen(_port, master_id, _duration), - startAddr(start_addr), endAddr(end_addr), - blocksize(_blocksize), minPeriod(min_period), - maxPeriod(max_period), readPercent(read_percent), - dataLimit(data_limit) - { } - - void enter(); - - void execute(); - - Tick nextExecuteTick(); - - private: - - /** Start of address range */ - const Addr startAddr; - - /** End of address range */ - const Addr endAddr; - - /** Blocksize and address increment */ - const Addr blocksize; - - /** Request generation period */ - const Tick minPeriod; - const Tick maxPeriod; - - /** - * Percent of generated transactions that should be reads - */ - const uint8_t readPercent; - - /** Maximum amount of data to manipulate */ - const Addr dataLimit; - - /** Address of next request */ - Addr nextAddr; - - /** - * Counter to determine the amount of data - * manipulated. Used to determine if we should continue - * generating requests. - */ - Addr dataManipulated; - }; - - /** - * The random generator is similar to the linear one, but does - * not generate sequential addresses. Instead it randomly - * picks an address in the range, aligned to the block size. - */ - class RandomGen : public BaseGen - { - - public: - - /** - * Create a random address sequence generator. Set - * min_period == max_period for a fixed inter-transaction - * time. - * - * @param _port port used to send requests - * @param master_id MasterID set on each request - * @param _duration duration of this state before transitioning - * @param start_addr Start address - * @param end_addr End address - * @param _blocksize Size used for transactions injected - * @param min_period Lower limit of random inter-transaction time - * @param max_period Upper limit of random inter-transaction time - * @param read_percent Percent of transactions that are reads - * @param data_limit Upper limit on how much data to read/write - */ - RandomGen(QueuedMasterPort& _port, MasterID master_id, - Tick _duration, Addr start_addr, Addr end_addr, - Addr _blocksize, Tick min_period, Tick max_period, - uint8_t read_percent, Addr data_limit) - : BaseGen(_port, master_id, _duration), - startAddr(start_addr), endAddr(end_addr), - blocksize(_blocksize), minPeriod(min_period), - maxPeriod(max_period), readPercent(read_percent), - dataLimit(data_limit) - { } - - void enter(); - - void execute(); - - Tick nextExecuteTick(); - - private: - - /** Start of address range */ - const Addr startAddr; - - /** End of address range */ - const Addr endAddr; - - /** Block size */ - const Addr blocksize; - - /** Request generation period */ - const Tick minPeriod; - const Tick maxPeriod; - - /** - * Percent of generated transactions that should be reads - */ - const uint8_t readPercent; - - /** Maximum amount of data to manipulate */ - const Addr dataLimit; - - /** - * Counter to determine the amount of data - * manipulated. Used to determine if we should continue - * generating requests. - */ - Addr dataManipulated; - }; - - /** - * The trace replay generator reads a trace file and plays - * back the transactions. The trace is offset with respect to - * the time when the state was entered. - */ - class TraceGen : public BaseGen - { - - private: - - /** - * This struct stores a line in the trace file. - */ - struct TraceElement { - - /** Specifies if the request is to be a read or a write */ - MemCmd cmd; - - /** The address for the request */ - Addr addr; - - /** The size of the access for the request */ - Addr blocksize; - - /** The time at which the request should be sent */ - Tick tick; - - /** - * Check validity of this element. - * - * @return if this element is valid - */ - bool isValid() const { - return cmd != MemCmd::InvalidCmd; - } - - /** - * Make this element invalid. - */ - void clear() { - cmd = MemCmd::InvalidCmd; - } - }; - - /** - * The InputStream encapsulates a trace file and the - * internal buffers and populates TraceElements based on - * the input. - */ - class InputStream - { - - private: - - /// Input file stream for the protobuf trace - ProtoInputStream trace; - - public: - - /** - * Create a trace input stream for a given file name. - * - * @param filename Path to the file to read from - */ - InputStream(const std::string& filename); - - /** - * Reset the stream such that it can be played once - * again. - */ - void reset(); - - /** - * Attempt to read a trace element from the stream, - * and also notify the caller if the end of the file - * was reached. - * - * @param element Trace element to populate - * @return True if an element could be read successfully - */ - bool read(TraceElement& element); - }; - - public: - - /** - * Create a trace generator. - * - * @param _port port used to send requests - * @param master_id MasterID set on each request - * @param _duration duration of this state before transitioning - * @param trace_file File to read the transactions from - * @param addr_offset Positive offset to add to trace address - */ - TraceGen(QueuedMasterPort& _port, MasterID master_id, - Tick _duration, const std::string& trace_file, - Addr addr_offset) - : BaseGen(_port, master_id, _duration), - trace(trace_file), - addrOffset(addr_offset), - traceComplete(false) - { - } - - void enter(); - - void execute(); - - void exit(); - - /** - * Read a line of the trace file. Returns the raw tick - * when the next request should be generated. If the end - * of the file has been reached, it returns MaxTick to - * indicate that there will be no more requests. - */ - Tick nextExecuteTick(); - - private: - - /** Input stream used for reading the input trace file */ - InputStream trace; - - /** Store the current and next element in the trace */ - TraceElement currElement; - TraceElement nextElement; - - /** - * Stores the time when the state was entered. This is to add an - * offset to the times stored in the trace file. - */ - Tick tickOffset; - - /** - * Offset for memory requests. Used to shift the trace - * away from the CPU address space. - */ - Addr addrOffset; - - /** - * Set to true when the trace replay for one instance of - * state is complete. - */ - bool traceComplete; - }; - /** Pointer to owner of request handler */ TrafficGen& owner; @@ -625,4 +234,4 @@ class TrafficGen : public MemObject }; -#endif //__MEM_TRAFFIC_GEN_HH__ +#endif //__CPU_TRAFFIC_GEN_TRAFFIC_GEN_HH__ |