dma: add api to validate dma region

Signed-off-by: Swapnil Ingle <swapnil.ingle@nutanix.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/dma.h b/lib/dma.h
index 8eb6210..1713bc5 100644
--- a/lib/dma.h
+++ b/lib/dma.h
@@ -245,6 +245,10 @@ dma_unmap_addr(dma_controller_t *dma,
     dma_unmap_sg(dma, &sg, &iov, 1);
 }
 
+bool
+dma_controller_region_valid(dma_controller_t *dma, dma_addr_t dma_addr,
+                            size_t size);
+
 #endif /* DMA_DMA_H */
 
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