packet.c File Reference

This module implements function relative to programming the DMNI to send and receibe a packet. It is a abstraction from the NoC to the software components. This module is used by both manager and slave kernel. More...

#include "packet.h"
#include "../include/plasma.h"

Include dependency graph for packet.c:

Functions
ServiceHeader *	get_service_header_slot ()
void	init_service_header_slots ()
void	DMNI_read_data (unsigned int initial_address, unsigned int dmni_msg_size)
void	DMNI_send_data (unsigned int initial_address, unsigned int dmni_msg_size)
void	send_packet (ServiceHeader *p, unsigned int initial_address, unsigned int dmni_msg_size)
void	read_packet (ServiceHeader *p)

Variables
ServiceHeaderSlot	sh_slot1
ServiceHeaderSlot	sh_slot2
	Slots to prevent memory writing while is sending a packet.
unsigned int	global_inst = 0
	Global CPU instructions counter.

Detailed Description

This module implements function relative to programming the DMNI to send and receibe a packet. It is a abstraction from the NoC to the software components. This module is used by both manager and slave kernel.

HEMPS VERSION - 8.0 - support for RT applications

Distribution: June 2016

Created by: Marcelo Ruaro - contact: marce.nosp@m.lo.r.nosp@m.uaro@.nosp@m.acad.nosp@m..pucr.nosp@m.s.br

Research group: GAPH-PUCRS - contact: ferna.nosp@m.ndo..nosp@m.morae.nosp@m.s@pu.nosp@m.crs.b.nosp@m.r

Function Documentation

void DMNI_read_data	(	unsigned int	initial_address,
		unsigned int	dmni_msg_size
	)

Function that abstracts the DMNI programming for read data from NoC and copy to memory

Parameters

initial_address	Initial memory address to copy the received data
dmni_msg_size	Data size, is represented in memory word of 32 bits

void DMNI_send_data	(	unsigned int	initial_address,
		unsigned int	dmni_msg_size
	)

Function that abstracts the DMNI programming for send data from memory to NoC

Parameters

initial_address	Initial memory address that will be transmitted to NoC
dmni_msg_size	Data size, is represented in memory word of 32 bits

ServiceHeader* get_service_header_slot

(

)

Searches for a free ServiceHeaderSlot (sh_slot1 or sh_slot2) pointer. A free slot is the one which is not being used by DMNI. This function prevents that a given memory space be changed while its is not completely transmitted by DMNI.

Returns

A pointer to a free ServiceHeadeSlot

void init_service_header_slots

(

)

Initializes the service slots

void read_packet

(

ServiceHeader *

p

)

Function that abstracts the process to read a generic packet from NoC by programming the DMNI

Parameters

p	Packet pointer

void send_packet	(	ServiceHeader *	p,
		unsigned int	initial_address,
		unsigned int	dmni_msg_size
	)

Function that abstracts the process to send a generic packet to NoC by programming the DMNI

Parameters

p	Packet pointer
initial_address	Initial memory address of the packet payload (payload, not service header)

Returns

dmni_msg_size Packet payload size represented in memory words of 32 bits