diff options
Diffstat (limited to 'dma/nwl_loopback.c')
| -rw-r--r-- | dma/nwl_loopback.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/dma/nwl_loopback.c b/dma/nwl_loopback.c index 3c2c124..de17962 100644 --- a/dma/nwl_loopback.c +++ b/dma/nwl_loopback.c @@ -16,7 +16,8 @@ int dma_nwl_start_loopback(nwl_dma_t *ctx, pcilib_dma_direction_t direction, size_t packet_size) { uint32_t val; - // Re-initializing always + ctx->loopback_started = 1; + dma_nwl_stop_loopback(ctx); val = packet_size; nwl_write_register(val, ctx, ctx->base_addr, PKT_SIZE_ADDRESS); @@ -24,17 +25,16 @@ int dma_nwl_start_loopback(nwl_dma_t *ctx, pcilib_dma_direction_t direction, si switch (direction) { case PCILIB_DMA_BIDIRECTIONAL: val = LOOPBACK; + nwl_write_register(val, ctx, ctx->base_addr, TX_CONFIG_ADDRESS); break; case PCILIB_DMA_TO_DEVICE: return -1; case PCILIB_DMA_FROM_DEVICE: val = PKTGENR; + nwl_write_register(val, ctx, ctx->base_addr, RX_CONFIG_ADDRESS); 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; @@ -42,6 +42,8 @@ int dma_nwl_start_loopback(nwl_dma_t *ctx, pcilib_dma_direction_t direction, si int dma_nwl_stop_loopback(nwl_dma_t *ctx) { uint32_t val = 0; + + if (!ctx->loopback_started) return 0; /* Stop in any case, otherwise we can have problems in benchmark due to engine initialized in previous run, and benchmark is only actual usage. |