incorporate array offset into descriptors

Array offset was ignored when filling out descriptors but was used properly when checking for alignment. See Xilinx#1392
sebastianpetersFAU · Oct 18, 2022 · 098292a · 098292a
1 parent a056b84
commit 098292a
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/pynq/lib/dma.py b/pynq/lib/dma.py
@@ -410,9 +410,9 @@ def transfer(self, array, start=0, nbytes=0, cyclic=False):
             remain -= d_len
 
             # Buffer address (64-bit)
-            self._descr[i, 2] = (array.physical_address + (i * blk_size)) & 0xFFFFFFFF
+            self._descr[i, 2] = (array.physical_address + start + (i * blk_size)) & 0xFFFFFFFF
             self._descr[i, 3] = (
-                (array.physical_address + (i * blk_size)) >> 32
+                (array.physical_address + start + (i * blk_size)) >> 32
             ) & 0xFFFFFFFF
 
             # First block