IRQ acknowledgement support in the engine API

1 files changed, 22 insertions, 2 deletions

diff --git a/dma.c b/dma.c
index 7ae56f7..1bab0f9 100644
--- a/dma.c
+++ b/dma.c
@@ -114,7 +114,6 @@ 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 0;
     }
 
@@ -136,13 +135,34 @@ 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 0;
     }
     
     return ctx->model_info.dma_api->disable_irq(ctx->dma_ctx, flags);
 }
 
+int pcilib_acknowledge_irq(pcilib_t *ctx, pcilib_irq_type_t irq_type, pcilib_irq_source_t irq_source) {
+    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->acknowledge_irq) {
+	return 0;
+    }
+
+    return ctx->model_info.dma_api->acknowledge_irq(ctx->dma_ctx, irq_type, irq_source);
+}
+
+
 
 typedef struct {
     size_t size;