dma/pl330: Add event debugging printfs

These are helpful to anyone trying to debug event sequencing.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: e82a0ad804db3de4f46839e55a9d287735ef870d.1393372019.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/hw/dma/pl330.c b/hw/dma/pl330.c
index 8046a6f..303f8b8 100644 (file)
--- a/hw/dma/pl330.c
+++ b/hw/dma/pl330.c
@@ -873,6 +873,7 @@ static void pl330_dmasev(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
         DB_PRINT("event interrupt raised %" PRId8 "\n", ev_id);
         qemu_irq_raise(ch->parent->irq[ev_id]);
     }
+    DB_PRINT("event raised %" PRId8 "\n", ev_id);
     ch->parent->ev_status |= (1 << ev_id);
 }
 
@@ -975,6 +976,7 @@ static void pl330_dmawfe(PL330Chan *ch, uint8_t opcode,
             }
         }
         ch->parent->ev_status &= ~(1 << ev_id);
+        DB_PRINT("event lowered %" PRIx8 "\n", ev_id);
     } else {
         ch->stall = 1;
     }