gem5::memory::DRAMSim2Wrapper Class Reference

Wrapper class to avoid having DRAMSim2 names like ClockDomain etc clashing with the normal gem5 world. More...

#include <dramsim2_wrapper.hh>

Public Member Functions
	DRAMSim2Wrapper (const std::string &config_file, const std::string &system_file, const std::string &working_dir, const std::string &trace_file, unsigned int memory_size_mb, bool enable_debug)
	Create an instance of the DRAMSim2 multi-channel memory controller using a specific config and system description.
	~DRAMSim2Wrapper ()
void	printStats ()
	Print the stats gathered in DRAMsim2.
void	setCallbacks (DRAMSim::TransactionCompleteCB *read_callback, DRAMSim::TransactionCompleteCB *write_callback)
	Set the callbacks to use for read and write completion.
bool	canAccept () const
	Determine if the controller can accept a new packet or not.
void	enqueue (bool is_write, uint64_t addr)
	Enqueue a packet.
double	clockPeriod () const
	Get the internal clock period used by DRAMSim2, specified in ns.
unsigned int	queueSize () const
	Get the transaction queue size used by DRAMSim2.
unsigned int	burstSize () const
	Get the burst size in bytes used by DRAMSim2.
void	tick ()
	Progress the memory controller one cycle.

Private Member Functions
template<typename T >
T	extractConfig (const std::string &field_name, const std::string &file_name) const

Private Attributes
DRAMSim::MultiChannelMemorySystem *	dramsim
double	_clockPeriod
unsigned int	_queueSize
unsigned int	_burstSize

Detailed Description

Wrapper class to avoid having DRAMSim2 names like ClockDomain etc clashing with the normal gem5 world.

Many of the DRAMSim2 headers do not make use of namespaces, and quite a few also open up std. The only thing that needs to be exposed externally are the callbacks. This wrapper effectively avoids clashes by not including any of the conventional gem5 headers (e.g. Packet or SimObject).

Definition at line 73 of file dramsim2_wrapper.hh.

Constructor & Destructor Documentation

DRAMSim2Wrapper()

gem5::memory::DRAMSim2Wrapper::DRAMSim2Wrapper	(	const std::string &	config_file,
		const std::string &	system_file,
		const std::string &	working_dir,
		const std::string &	trace_file,
		unsigned int	memory_size_mb,
		bool	enable_debug )

Create an instance of the DRAMSim2 multi-channel memory controller using a specific config and system description.

Parameters

config_file	Memory config file
system_file	Controller config file
working_dir	Path pre-pended to config files
trace_file	Output trace file
memory_size_mb	Total memory size in MByte
enable_debug	Enable debug output

Definition at line 61 of file dramsim2_wrapper.cc.

References _burstSize, _clockPeriod, _queueSize, dramsim, extractConfig(), fatal, and SHOW_SIM_OUTPUT.

~DRAMSim2Wrapper()

gem5::memory::DRAMSim2Wrapper::~DRAMSim2Wrapper

(

)

Definition at line 110 of file dramsim2_wrapper.cc.

References dramsim.

Member Function Documentation

burstSize()

unsigned int gem5::memory::DRAMSim2Wrapper::burstSize

(

)

const

Get the burst size in bytes used by DRAMSim2.

Returns

The burst size in bytes (data width * burst length)

Definition at line 186 of file dramsim2_wrapper.cc.

References _burstSize.

Referenced by gem5::memory::DRAMSim2::init().

canAccept()

bool gem5::memory::DRAMSim2Wrapper::canAccept

(

)

const

Determine if the controller can accept a new packet or not.

Returns

true if the controller can accept transactions

Definition at line 161 of file dramsim2_wrapper.cc.

References dramsim.

Referenced by gem5::memory::DRAMSim2::recvTimingReq().

clockPeriod()

double gem5::memory::DRAMSim2Wrapper::clockPeriod

(

)

const

Get the internal clock period used by DRAMSim2, specified in ns.

Returns

The clock period of the DRAM interface in ns

Definition at line 174 of file dramsim2_wrapper.cc.

References _clockPeriod.

Referenced by gem5::memory::DRAMSim2::readComplete(), gem5::memory::DRAMSim2::tick(), and gem5::memory::DRAMSim2::writeComplete().

enqueue()

void gem5::memory::DRAMSim2Wrapper::enqueue	(	bool	is_write,
		uint64_t	addr )

Enqueue a packet.

This assumes that canAccept has returned true.

Parameters

pkt	Packet to turn into a DRAMSim2 transaction

Definition at line 167 of file dramsim2_wrapper.cc.

References gem5::X86ISA::addr, and dramsim.

Referenced by gem5::memory::DRAMSim2::recvTimingReq().

extractConfig()

template<typename T >

T gem5::memory::DRAMSim2Wrapper::extractConfig ( const std::string & field_name, const std::string & file_name ) const

private

Definition at line 117 of file dramsim2_wrapper.cc.

References fatal, and gem5::ArmISA::iss.

Referenced by DRAMSim2Wrapper().

printStats()

void gem5::memory::DRAMSim2Wrapper::printStats

(

)

Print the stats gathered in DRAMsim2.

Definition at line 147 of file dramsim2_wrapper.cc.

References dramsim.

queueSize()

unsigned int gem5::memory::DRAMSim2Wrapper::queueSize

(

)

const

Get the transaction queue size used by DRAMSim2.

Returns

The queue size counted in number of transactions

Definition at line 180 of file dramsim2_wrapper.cc.

References _queueSize.

Referenced by gem5::memory::DRAMSim2::recvTimingReq(), and gem5::memory::DRAMSim2::tick().

setCallbacks()

void gem5::memory::DRAMSim2Wrapper::setCallbacks	(	DRAMSim::TransactionCompleteCB *	read_callback,
		DRAMSim::TransactionCompleteCB *	write_callback )

Set the callbacks to use for read and write completion.

Parameters

read_callback	Callback used for read completions
write_callback	Callback used for write completions

Definition at line 153 of file dramsim2_wrapper.cc.

References dramsim.

tick()

void gem5::memory::DRAMSim2Wrapper::tick

(

)

Progress the memory controller one cycle.

Definition at line 192 of file dramsim2_wrapper.cc.

References dramsim.

Referenced by gem5::memory::DRAMSim2::tick().

Member Data Documentation

_burstSize

unsigned int gem5::memory::DRAMSim2Wrapper::_burstSize

private

Definition at line 84 of file dramsim2_wrapper.hh.

Referenced by burstSize(), and DRAMSim2Wrapper().

_clockPeriod

double gem5::memory::DRAMSim2Wrapper::_clockPeriod

private

Definition at line 80 of file dramsim2_wrapper.hh.

Referenced by clockPeriod(), and DRAMSim2Wrapper().

_queueSize

unsigned int gem5::memory::DRAMSim2Wrapper::_queueSize

private

Definition at line 82 of file dramsim2_wrapper.hh.

Referenced by DRAMSim2Wrapper(), and queueSize().

dramsim

DRAMSim::MultiChannelMemorySystem* gem5::memory::DRAMSim2Wrapper::dramsim

private

Definition at line 78 of file dramsim2_wrapper.hh.

Referenced by canAccept(), DRAMSim2Wrapper(), enqueue(), printStats(), setCallbacks(), tick(), and ~DRAMSim2Wrapper().

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The documentation for this class was generated from the following files:

• mem/dramsim2_wrapper.hh
• mem/dramsim2_wrapper.cc