Allocate non-coherent DMA pages in stream mode

slaclab · Jun 5, 2024 · b10e607 · b10e607
1 parent ff0e137
commit b10e607
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/common/driver/dma_buffer.c b/common/driver/dma_buffer.c
@@ -48,7 +48,7 @@ size_t dmaAllocBuffers ( struct DmaDevice *dev, struct DmaBufferList *list,
    uint32_t x;
    uint32_t sl;
    uint32_t sli;
-
+   dma_addr_t dmaHandle = {0};
    struct DmaBuffer * buff;
 
    // Determine number of sub-lists
@@ -106,12 +106,12 @@ size_t dmaAllocBuffers ( struct DmaDevice *dev, struct DmaBufferList *list,
 
       // Streaming buffer type, standard kernel memory
       else if ( list->dev->cfgMode & BUFF_STREAM ) {
-         buff->buffAddr = dma_alloc_coherent(list->dev->device, list->dev->cfgSize, &buff->buffHandle, GFP_KERNEL);
+         dev_info(dev->device, "dmaAllocBuffers: BUFF_STREAM\n");
 
-         // Check for mapping error
-         if (buff->buffAddr == NULL) {
-            dev_err(dev->device,"dmaAllocBuffers: dma_alloc_coherent failed\n");
-         }
+         buff->buffAddr = dma_alloc_pages(list->dev->device, list->dev->cfgSize, &dmaHandle, direction, GFP_KERNEL);
+
+         if (buff->buffAddr == NULL)
+            dev_err(dev->device, "dmaAllocBuffers: dma_alloc_pages failed\n");
       }
 
       // ACP type with permanent handle mapping, dma capable kernel memory