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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include "pci.h"
#include "pcilib.h"
#include "error.h"
#include "tools.h"
#include "nwl.h"
#include "nwl_defines.h"
int dma_nwl_start_loopback(nwl_dma_t *ctx, pcilib_dma_direction_t direction, size_t packet_size) {
uint32_t val;
// Re-initializing always
val = packet_size;
nwl_write_register(val, ctx, ctx->base_addr, PKT_SIZE_ADDRESS);
switch (direction) {
case PCILIB_DMA_BIDIRECTIONAL:
val = LOOPBACK;
break;
case PCILIB_DMA_TO_DEVICE:
return -1;
case PCILIB_DMA_FROM_DEVICE:
val = PKTGENR;
break;
}
nwl_write_register(val, ctx, ctx->base_addr, TX_CONFIG_ADDRESS);
nwl_write_register(val, ctx, ctx->base_addr, RX_CONFIG_ADDRESS);
ctx->loopback_started = 1;
return 0;
}
int dma_nwl_stop_loopback(nwl_dma_t *ctx) {
uint32_t val = 0;
if (ctx->loopback_started) {
nwl_write_register(val, ctx, ctx->base_addr, TX_CONFIG_ADDRESS);
nwl_write_register(val, ctx, ctx->base_addr, RX_CONFIG_ADDRESS);
ctx->loopback_started = 0;
}
return 0;
}
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