litex/vpi/main.c

122 lines
2.1 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <vpi_user.h>
#include "ipc.h"
struct migensim_softc {
struct ipc_softc *ipc;
int has_go;
};
static int h_go(void *user)
{
struct migensim_softc *sc = (struct migensim_softc *)user;
printf("GO\n");
sc->has_go = 1;
return 1;
}
static int h_write(char *name, int nchunks, const unsigned char *chunks, void *user)
{
int i;
printf("WRITE: %s / nchunks: %d / ", name, nchunks);
for(i=0;i<nchunks;i++)
printf("%02hhx", chunks[i]);
printf("\n");
return 1;
}
static int h_read(char *name, void *user)
{
printf("READ: %s\n", name);
return 1;
}
static int process_until_go(struct migensim_softc *sc)
{
sc->has_go = 0;
while(!sc->has_go) {
if(!ipc_receive(sc->ipc))
return 0;
}
return 1;
}
static int connect_calltf(char *user)
{
struct migensim_softc *sc = (struct migensim_softc *)user;
vpiHandle sys;
vpiHandle argv;
vpiHandle item;
s_vpi_value value;
sys = vpi_handle(vpiSysTfCall, 0);
argv = vpi_iterate(vpiArgument, sys);
item = vpi_scan(argv);
value.format = vpiStringVal;
vpi_get_value(item, &value);
sc->ipc = ipc_connect(value.value.str, h_go, h_write, h_read, sc);
if(sc->ipc == NULL) {
perror("ipc_connect");
vpi_control(vpiFinish, 1);
return 0;
}
if(!process_until_go(sc)) {
vpi_control(vpiFinish, 1);
return 0;
}
return 0;
}
static int tick_calltf(char *user)
{
struct migensim_softc *sc = (struct migensim_softc *)user;
if(!ipc_tick(sc->ipc)) {
perror("ipc_tick");
vpi_control(vpiFinish, 1);
return 0;
}
if(!process_until_go(sc)) {
vpi_control(vpiFinish, 1);
return 0;
}
return 0;
}
static struct migensim_softc sc;
static void simple_register(const char *tfname, PLI_INT32 (*calltf)(PLI_BYTE8*))
{
s_vpi_systf_data tf_data;
tf_data.type = vpiSysTask;
tf_data.tfname = tfname;
tf_data.calltf = calltf;
tf_data.compiletf = NULL;
tf_data.sizetf = 0;
tf_data.user_data = (void *)&sc;
vpi_register_systf(&tf_data);
}
static void migensim_register()
{
simple_register("$migensim_connect", connect_calltf);
simple_register("$migensim_tick", tick_calltf);
}
void (*vlog_startup_routines[])() = {
migensim_register,
0
};