1 files changed, 42 insertions, 4 deletions

diff --git a/dma.c b/dma.c
index 0619a45..3cba0da 100644
--- a/dma.c
+++ b/dma.c
@@ -55,9 +55,47 @@ int pcilib_set_dma_engine_description(pcilib_t *ctx, pcilib_dma_engine_t engine,
 }
 
 int pcilib_start_dma(pcilib_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags) {
+    int err; 
+
+    const pcilib_dma_info_t *info =  pcilib_get_dma_info(ctx);
+    if (!info) {
+	pcilib_error("DMA is not supported by the device");
+	return PCILIB_ERROR_NOTSUPPORTED;
+    }
+
+    if (!ctx->model_info.dma_api) {
+	pcilib_error("DMA Engine is not configured in the current model");
+	return PCILIB_ERROR_NOTAVAILABLE;
+    }
+    
+    if (!ctx->model_info.dma_api->start_dma) {
+	//pcilib_error("The IRQs are not supported by configured DMA engine");
+	return 0;
+    }
+    
+    return ctx->model_info.dma_api->start_dma(ctx->dma_ctx, dma, flags);
 }
 
 int pcilib_stop_dma(pcilib_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags) {
+    int err; 
+
+    const pcilib_dma_info_t *info =  pcilib_get_dma_info(ctx);
+    if (!info) {
+	pcilib_error("DMA is not supported by the device");
+	return PCILIB_ERROR_NOTSUPPORTED;
+    }
+
+    if (!ctx->model_info.dma_api) {
+	pcilib_error("DMA Engine is not configured in the current model");
+	return PCILIB_ERROR_NOTAVAILABLE;
+    }
+    
+    if (!ctx->model_info.dma_api->stop_dma) {
+	//pcilib_error("The IRQs are not supported by configured DMA engine");
+	return 0;
+    }
+    
+    return ctx->model_info.dma_api->stop_dma(ctx->dma_ctx, dma, flags);
 }
 
 int pcilib_enable_irq(pcilib_t *ctx, pcilib_irq_type_t irq_type, pcilib_dma_flags_t flags) {
@@ -75,8 +113,8 @@ int pcilib_enable_irq(pcilib_t *ctx, pcilib_irq_type_t irq_type, pcilib_dma_flag
     }
     
     if (!ctx->model_info.dma_api->enable_irq) {
-	pcilib_error("The IRQs are not supported by configured DMA engine");
-	return PCILIB_ERROR_NOTSUPPORTED;
+	//pcilib_error("The IRQs are not supported by configured DMA engine");
+	return 0;
     }
     
     return ctx->model_info.dma_api->enable_irq(ctx->dma_ctx, irq_type, flags);
@@ -97,8 +135,8 @@ int pcilib_disable_irq(pcilib_t *ctx, pcilib_dma_flags_t flags) {
     }
     
     if (!ctx->model_info.dma_api->disable_irq) {
-	pcilib_error("The IRQs are not supported by configured DMA engine");
-	return PCILIB_ERROR_NOTSUPPORTED;
+	//pcilib_error("The IRQs are not supported by configured DMA engine");
+	return 0;
     }
     
     return ctx->model_info.dma_api->disable_irq(ctx->dma_ctx, flags);