SRP v0 bridge between Rogue memory transactions and stream frames. More...

#include <SrpV0.h>

Inheritance diagram for rogue::protocols::srp::SrpV0:

Public Member Functions
	SrpV0 ()
	Constructs an SRP v0 interface instance.

	~SrpV0 ()
	Destroys the SRP v0 interface instance.

void	doTransaction (std::shared_ptr< rogue::interfaces::memory::Transaction > tran)
	Processes a memory transaction and emits SRP v0 request frame(s).

void	acceptFrame (std::shared_ptr< rogue::interfaces::stream::Frame > frame)
	Accepts an incoming SRP v0 response frame.

Public Member Functions inherited from rogue::interfaces::stream::Master
	Master ()
	Constructs a stream master.

virtual	~Master ()
	Destroys the stream master.

uint32_t	slaveCount ()
	Returns the number of attached slaves.

void	addSlave (std::shared_ptr< rogue::interfaces::stream::Slave > slave)
	Attaches a downstream slave.

std::shared_ptr< rogue::interfaces::stream::Frame >	reqFrame (uint32_t size, bool zeroCopyEn)
	Requests allocation of a new frame from the primary slave.

void	sendFrame (std::shared_ptr< rogue::interfaces::stream::Frame > frame)
	Sends a frame to all attached slaves.

bool	ensureSingleBuffer (std::shared_ptr< rogue::interfaces::stream::Frame > &frame, bool reqEn)
	Ensures a frame is represented by a single buffer.

virtual void	stop ()
	Stops frame generation and shuts down associated threads.

void	equalsPy (boost::python::object p)
	Supports `==` operator usage from Python.

boost::python::object	rshiftPy (boost::python::object p)
	Supports `>>` operator usage from Python.

void	operator== (std::shared_ptr< rogue::interfaces::stream::Slave > &other)
	Supports `==` operator usage in C++.

std::shared_ptr< rogue::interfaces::stream::Slave > &	operator>> (std::shared_ptr< rogue::interfaces::stream::Slave > &other)
	Connects this master to a slave via stream chaining operator.

Public Member Functions inherited from rogue::EnableSharedFromThis< rogue::interfaces::stream::Master >
std::shared_ptr< rogue::interfaces::stream::Master >	shared_from_this ()
	Returns a `shared_ptr<T>` for this instance.

Public Member Functions inherited from rogue::EnableSharedFromThisBase
virtual	~EnableSharedFromThisBase ()
	Virtual destructor for polymorphic base usage.

Public Member Functions inherited from rogue::interfaces::stream::Slave
	Slave ()
	Constructs a stream slave.

virtual	~Slave ()
	Destroys the stream slave.

virtual void	stop ()
	Shuts down threads associated with this object.

void	setDebug (uint32_t debug, std::string name)
	Sets debug message verbosity and logger name.

uint64_t	getFrameCount ()
	Returns frame counter.

uint64_t	getByteCount ()
	Returns byte counter.

bool	ensureSingleBuffer (std::shared_ptr< rogue::interfaces::stream::Frame > &frame, bool reqEn)
	Ensures frame is backed by a single buffer.

std::shared_ptr< rogue::interfaces::stream::Frame >	reqLocalFrame (uint32_t size, bool zeroCopyEn)
	Services a local frame allocation request through this object's pool interface.

boost::python::object	lshiftPy (boost::python::object p)
	Supports `<<` operator usage from Python.

std::shared_ptr< rogue::interfaces::stream::Master > &	operator<< (std::shared_ptr< rogue::interfaces::stream::Master > &other)
	Connects this slave to a master via stream chaining operator.

Public Member Functions inherited from rogue::interfaces::stream::Pool
	Pool ()
	Constructs a pool with default allocation behavior enabled.

virtual	~Pool ()
	Destroys the pool and releases any cached buffer storage.

uint32_t	getAllocBytes ()
	Returns total currently allocated bytes.

uint32_t	getAllocCount ()
	Returns total currently allocated buffer count.

virtual std::shared_ptr< rogue::interfaces::stream::Frame >	acceptReq (uint32_t size, bool zeroCopyEn)
	Services a frame allocation request from a master.

virtual void	retBuffer (uint8_t *data, uint32_t meta, uint32_t size)
	Returns buffer data to the allocator.

void	setFixedSize (uint32_t size)
	Sets fixed-size mode.

uint32_t	getFixedSize ()
	Returns fixed-size allocation setting.

void	setPoolSize (uint32_t size)
	Sets buffer pool size.

uint32_t	getPoolSize ()
	Returns configured maximum number of cached pool entries.

Public Member Functions inherited from rogue::EnableSharedFromThis< rogue::interfaces::stream::Pool >
std::shared_ptr< rogue::interfaces::stream::Pool >	shared_from_this ()
	Returns a `shared_ptr<T>` for this instance.

Public Member Functions inherited from rogue::EnableSharedFromThis< rogue::interfaces::stream::Slave >
std::shared_ptr< rogue::interfaces::stream::Slave >	shared_from_this ()
	Returns a `shared_ptr<T>` for this instance.

Public Member Functions inherited from rogue::interfaces::memory::Slave
	Slave (uint32_t min, uint32_t max)
	Constructs a memory slave.

virtual	~Slave ()
	Destroys the memory slave instance.

virtual void	stop ()
	Stops the memory slave interface.

void	addTransaction (std::shared_ptr< rogue::interfaces::memory::Transaction > transaction)
	Adds a transaction to the internal tracking map.

std::shared_ptr< rogue::interfaces::memory::Transaction >	getTransaction (uint32_t index)
	Gets a transaction from the internal tracking map.

uint32_t	min ()
	Returns configured minimum transaction size.

uint32_t	max ()
	Returns configured maximum transaction size.

uint32_t	id ()
	Returns unique slave ID.

void	setName (std::string name)
	Sets slave name.

std::string	name ()
	Returns slave name.

virtual uint32_t	doSlaveId ()
	Services `SlaveId` request from a master.

virtual std::string	doSlaveName ()
	Services `SlaveName` request from a master.

virtual uint32_t	doMinAccess ()
	Services `getMinAccess` request from an attached master.

virtual uint32_t	doMaxAccess ()
	Services `getMaxAccess` request from an attached master.

virtual uint64_t	doAddress ()
	Services `getAddress` request from an attached master.

void	lshiftPy (boost::python::object p)
	Supports `<<` operator usage from Python.

std::shared_ptr< rogue::interfaces::memory::Master > &	operator<< (std::shared_ptr< rogue::interfaces::memory::Master > &other)
	Connects this slave to a master via chaining operator.

Public Member Functions inherited from rogue::EnableSharedFromThis< rogue::interfaces::memory::Slave >
std::shared_ptr< rogue::interfaces::memory::Slave >	shared_from_this ()
	Returns a `shared_ptr<T>` for this instance.

Static Public Member Functions
static std::shared_ptr< rogue::protocols::srp::SrpV0 >	create ()
	Creates an SRP v0 interface instance.

static void	setup_python ()
	Registers Python bindings for this class.

Static Public Member Functions inherited from rogue::interfaces::stream::Master
static std::shared_ptr< rogue::interfaces::stream::Master >	create ()
	Creates a stream master.

static void	setup_python ()
	Registers this type with Python bindings.

Static Public Member Functions inherited from rogue::interfaces::stream::Slave
static std::shared_ptr< rogue::interfaces::stream::Slave >	create ()
	Creates a new stream slave.

static void	setup_python ()
	Registers this type with Python bindings.

Static Public Member Functions inherited from rogue::interfaces::stream::Pool
static void	setup_python ()
	Registers this type with Python bindings.

Static Public Member Functions inherited from rogue::interfaces::memory::Slave
static std::shared_ptr< rogue::interfaces::memory::Slave >	create (uint32_t min, uint32_t max)
	Creates a memory slave.

static void	setup_python ()
	Registers this type with Python bindings.

Additional Inherited Members
Protected Member Functions inherited from rogue::interfaces::stream::Pool
std::shared_ptr< rogue::interfaces::stream::Buffer >	allocBuffer (uint32_t size, uint32_t *total)
	Allocate a buffer passed size.

std::shared_ptr< rogue::interfaces::stream::Buffer >	createBuffer (void *data, uint32_t meta, uint32_t size, uint32_t alloc)
	Creates a Buffer with a pre-allocated data block.

void	decCounter (uint32_t alloc)
	Decrements allocation counter.

Detailed Description

SRP v0 bridge between Rogue memory transactions and stream frames.

SrpV0 sits between the memory interface (memory::Slave) and stream transport (stream::Master/stream::Slave). It serializes memory read/write transactions into SRP v0 request frames and decodes incoming SRP responses to complete transactions.

SRP frames are stream transactions carried over a physical/link transport (for example DMA, TCP, or other Rogue stream backends) before arriving at an FPGA or ASIC endpoint that implements the SRP protocol for register access.

Implementation behavior:

doTransaction() serializes each memory request into one SRPv0 frame and transmits it immediately.
Non-posted transactions are registered in the base memory::Slave in-flight transaction map (addTransaction()), keyed by transaction ID.
Multiple requests may be transmitted before any responses arrive, so multiple transactions can be in flight concurrently.
acceptFrame() extracts the response ID and resolves it with getTransaction(id), so responses are matched by ID and may arrive out of order without violating correctness.

Threading/locking model:

In-flight map access is protected by the memory::Slave mutex.
Per-transaction payload/state access is protected by TransactionLock.
doTransaction() and acceptFrame() can be called from different runtime contexts provided by the connected stream transport stack.

Missing, late, or invalid responses:

Software wait timeout is enforced by the initiating memory::Master transaction timeout (Master::setTimeout() in microseconds).
If no valid response arrives before timeout, the waiting side completes with a timeout error.
If a late response arrives after timeout, it is treated as expired and ignored.
If a response has unknown ID, malformed header/size, or hardware error status in tail bits, the response is rejected. Hardware-status errors complete the transaction with error immediately; malformed/unknown responses typically leave the original transaction pending until software timeout.

The class is typically connected in a bidirectional stream path where outgoing requests are emitted through the stream::Master side and incoming frames are received through acceptFrame().

Protocol reference: https://confluence.slac.stanford.edu/x/aRmVD

Definition at line 84 of file SrpV0.h.

Constructor & Destructor Documentation

◆ SrpV0()

rogue::protocols::srp::SrpV0::SrpV0 ( )

Constructs an SRP v0 interface instance.

Creator with version constant.

This constructor is a low-level C++ allocation path. Prefer create() when shared ownership or Python exposure is required.

Definition at line 66 of file SrpV0.cpp.

◆ ~SrpV0()

rogue::protocols::srp::SrpV0::~SrpV0 ( )

Destroys the SRP v0 interface instance.

Deconstructor.

Definition at line 71 of file SrpV0.cpp.

Member Function Documentation

◆ acceptFrame()

void rogue::protocols::srp::SrpV0::acceptFrame ( std::shared_ptr< rogue::interfaces::stream::Frame > frame )

virtual

Accepts an incoming SRP v0 response frame.

Accept a frame from master.

Decodes the frame, matches it to the corresponding outstanding transaction, and updates completion/error state.

Parameters

frame Received SRP stream frame.

Reimplemented from rogue::interfaces::stream::Slave.

Definition at line 175 of file SrpV0.cpp.

◆ create()

rogue::protocols::srp::SrpV0Ptr rogue::protocols::srp::SrpV0::create ( )

static

Creates an SRP v0 interface instance.

Class creation.

This static factory is the preferred construction path when the object is shared across Rogue graph connections or exposed to Python. It returns std::shared_ptr ownership compatible with Rogue pointer typedefs.

Returns: Shared pointer to the created SrpV0.

Company : SLAC National Accelerator Laboratory

Description :

SRP protocol bridge, Version 0

This file is part of the rogue software platform. It is subject to the license terms in the LICENSE.txt file found in the top-level directory of this distribution and at: https://confluence.slac.stanford.edu/display/ppareg/LICENSE.html. No part of the rogue software platform, including this file, may be copied, modified, propagated, or distributed except according to the terms

contained in the LICENSE.txt file.

Definition at line 50 of file SrpV0.cpp.

◆ doTransaction()

void rogue::protocols::srp::SrpV0::doTransaction ( std::shared_ptr< rogue::interfaces::memory::Transaction > tran )

virtual

Processes a memory transaction and emits SRP v0 request frame(s).

Post a transaction.

Called by upstream memory masters. The transaction metadata and data payload are encoded into SRP v0 format and forwarded downstream through the stream master connection.

Parameters

tran	Transaction to execute over SRP.

Reimplemented from rogue::interfaces::memory::Slave.

Definition at line 103 of file SrpV0.cpp.

◆ setup_python()

void rogue::protocols::srp::SrpV0::setup_python ( )

static

Registers Python bindings for this class.

Setup class in python.

Definition at line 56 of file SrpV0.cpp.

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

/home/runner/work/rogue/rogue/include/rogue/protocols/srp/SrpV0.h
/home/runner/work/rogue/rogue/src/rogue/protocols/srp/SrpV0.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members