witness::AmpUioDevice Class Reference

#include <amp_uio_device.h>

Public Member Functions
	AmpUioDevice (const UioIdentity &identity, const AmpUioMap &fabric, const AmpUioMap &mailbox)
	~AmpUioDevice ()
	AmpUioDevice (const AmpUioDevice &)=delete
AmpUioDevice &	operator= (const AmpUioDevice &)=delete
std::uint64_t	time () const
void	advance (std::uint64_t nanoseconds)
ProtocolReply	read (std::uint8_t address)
ProtocolReply	write (std::uint8_t address, std::uint32_t value, std::uint8_t strobes)
std::uint32_t	read_memory32 (std::uint64_t address)
void	write_memory32 (std::uint64_t address, std::uint32_t value)

Detailed Description

One exclusive IRQ-free UIO owner for fabric configuration/drain and the reserved mailbox.

Definition at line 29 of file amp_uio_device.h.

Constructor & Destructor Documentation

AmpUioDevice()

witness::AmpUioDevice::AmpUioDevice	(	const UioIdentity &	identity,
		const AmpUioMap &	fabric,
		const AmpUioMap &	mailbox )

Verify original named map extents and absence of a Linux-owned controller IRQ.

~AmpUioDevice()

witness::AmpUioDevice::~AmpUioDevice

(

)

Release mappings and the advisory lock without acknowledging firmware or its IRQ.

Member Function Documentation

advance()

void witness::AmpUioDevice::advance

(

std::uint64_t

nanoseconds

)

Sleep while the independently running dedicated controller retains interrupt ownership.

read()

ProtocolReply witness::AmpUioDevice::read

(

std::uint8_t

address

)

Read a real full little-endian fabric register word.

read_memory32()

std::uint32_t witness::AmpUioDevice::read_memory32

(

std::uint64_t

address

)

Read a firmware-owned slot using ordered aligned mapped-memory loads.

time()

std::uint64_t witness::AmpUioDevice::time

(

)

const

Observe monotonic host nanoseconds for bounded polling, never fabric timing.

write()

ProtocolReply witness::AmpUioDevice::write	(	std::uint8_t	address,
		std::uint32_t	value,
		std::uint8_t	strobes )

Permit only host configuration, START and FIFO drain; refuse controller writes.

write_memory32()

void witness::AmpUioDevice::write_memory32	(	std::uint64_t	address,
		std::uint32_t	value )

Write only the consumer cursor or logger readiness/final acknowledgement.

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

• runtime/linux/amp_uio_device.h