witness::UioDevice Class Reference

#include <uio_device.h>

Public Member Functions
	UioDevice (const UioIdentity &identity)
	~UioDevice ()
	UioDevice (const UioDevice &)=delete
UioDevice &	operator= (const UioDevice &)=delete
std::uint64_t	time () const
ProtocolReply	read (std::uint8_t address)
ProtocolReply	write (std::uint8_t address, std::uint32_t data, std::uint8_t strobes)
void	advance (std::uint64_t nanoseconds)
bool	wait_interrupt (std::uint64_t nanoseconds)
std::uint32_t	last_interrupt_count () const

Detailed Description

Exclusive cooperative ownership of one generic platform UIO aperture.

Definition at line 28 of file uio_device.h.

Constructor & Destructor Documentation

UioDevice()

witness::UioDevice::UioDevice ( const UioIdentity & identity )

explicit

Verify sysfs, generic driver and character-device identity before mapping.

~UioDevice()

witness::UioDevice::~UioDevice

(

)

Release ownership without resetting an active hardware run.

Member Function Documentation

advance()

void witness::UioDevice::advance

(

std::uint64_t

nanoseconds

)

Sleep for a requested duration while physical fabric continues running.

last_interrupt_count()

std::uint32_t witness::UioDevice::last_interrupt_count ( ) const

inline

Last actual cumulative UIO interrupt counter, separate from RTL generation.

Definition at line 60 of file uio_device.h.

read()

ProtocolReply witness::UioDevice::read

(

std::uint8_t

address

)

Perform exactly one ordered aligned little-endian volatile 32-bit load.

time()

std::uint64_t witness::UioDevice::time

(

)

const

Absolute CLOCK_MONOTONIC nanoseconds; never fabric capture ticks.

wait_interrupt()

bool witness::UioDevice::wait_interrupt

(

std::uint64_t

nanoseconds

)

Re-enable generic IRQ, wait with nanosecond timeout and read its 4-byte count.

write()

ProtocolReply witness::UioDevice::write	(	std::uint8_t	address,
		std::uint32_t	data,
		std::uint8_t	strobes )

Full-word ordered store; refuse partial strobes before any MMIO access.

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

• runtime/linux/uio_device.h