sark_isr.c File Reference

Interrupt handlers for SARK. More...

#include <sark.h>

Functions
void	timer2_int (void)
	Interrupt handler for the timer which is handling timers.
void	timer2_int_han (void)
	Interrupt handler for timer 2. Delegates to timer2_int()
void	sark_fiq_han (void)
	Interrupt handler for messages from SCAMP. (FIQ)
void	txpkt_int_han (void)
	SpiNNaker packet may be transmitted interrupt handler.
static void	user_null (void)
	Dump handler for user-requested interrupts.
static void	user_irq (void)
	Interrupt handler for user-requested interrupts.
static void	user_fiq (void)
	FIQ handler for user-requested interrupts.
static void	user_queue (void)
	Queue handler for user-requested interrupts.
static void	sdp_null (void)
	Dump handler for SDP reception interrupts.
static void	sdp_irq (void)
	Interrupt handler for SDP reception interrupts.
static void	sdp_fiq (void)
	FIQ handler for SDP reception interrupts.
static void	sdp_queue (void)
	Queue handler for SDP reception interrupts.
static void	rxpkt_null (void)
	Dump handler for SpiNNaker packet reception interrupts.
static void	rxpkt_irq (void)
	Interrupt handler for SpiNNaker packet reception interrupts.
static void	rxpkt_fiq (void)
	FIQ handler for SpiNNaker packet reception interrupts.
static void	rxpkt_queue (void)
	Queue handler for SpiNNaker packet reception interrupts.
static void	timer_null (void)
	Dump handler for timer 1 interrupts.
static void	timer_irq (void)
	Interrupt handler for timer 1 interrupts.
static void	timer_fiq (void)
	FIQ handler for timer 1 interrupts.
static void	timer_queue (void)
	Queue handler for timer 1 interrupts.
static void	sig_null (void)
	Dump handler for signals.
static void	sig_irq (void)
	Interrupt handler for signals.
static void	sig_fiq (void)
	FIQ handler for signals.
static void	sig_queue (void)
	Queue handler for signals.

Variables
const int_handler	fiq_events []
	FIQ interrupt handlers, indexed by event_type_e.
const int_handler	irq_events []
	Standard interrupt handlers, indexed by event_type_e.
const int_handler	queue_events []
	Event queuers, indexed by event_type_e.
const int_handler	null_events []
	Null interrupt handlers, indexed by event_type_e.

Detailed Description

Interrupt handlers for SARK.

Copyright

© The University of Manchester - 2009-2019

Author

Steve Temple, APT Group, School of Computer Science

In general, for the classes of interrupt with in this code, the options for handling are:

1. to dump the interrupt (clear the hardware but otherwise do nothing
2. to process the interrupt as a fast interrupt, using the FIQ (a very limited number of event types can use this at a time)
3. to process the interrupt immediately as a standard interrupt.
4. to clear the hardware rapidly and enqueue a user-level callback for handling the results at a later point.

Function Documentation

sark_fiq_han()

void sark_fiq_han

(

void

)

Interrupt handler for messages from SCAMP. (FIQ)

Just throws the packet away.

txpkt_int_han()

void txpkt_int_han

(

void

)

SpiNNaker packet may be transmitted interrupt handler.

Sends the next packet on the event_data_t::pkt_queue. Disables itself if no packet is waiting.

Variable Documentation

fiq_events

const int_handler fiq_events[]

Initial value:

= {
    timer_fiq,
    rxpkt_fiq,
    sdp_fiq,
    user_fiq,
    sig_fiq
}

FIQ interrupt handlers, indexed by event_type_e.

irq_events

const int_handler irq_events[]

Initial value:

= {
    timer_irq,
    rxpkt_irq,
    sdp_irq,
    user_irq,
    sig_irq
}

Standard interrupt handlers, indexed by event_type_e.

queue_events

const int_handler queue_events[]

Initial value:

= {
    timer_queue,
    rxpkt_queue,
    sdp_queue,
    user_queue,
    sig_queue
}

Event queuers, indexed by event_type_e.

null_events

const int_handler null_events[]

Initial value:

= {
    timer_null,
    rxpkt_null,
    sdp_null,
    user_null,
    sig_null
}

Null interrupt handlers, indexed by event_type_e.