Test DMA reset value

ddrio.c

@@ -7,6 +7,7 @@
 #include <unistd.h>
 #include <getopt.h>
 #include <time.h>
+#include <assert.h>
 #include <pcilib.h>
 #include <pcilib/bar.h>
 #include <pcilib/kmem.h>
@@ -148,13 +149,21 @@ elapsed_seconds (struct timespec *start, struct timespec *end)
     return (end->tv_sec + end->tv_nsec / 1000000000.0) - (start->tv_sec + start->tv_nsec / 1000000000.0);
 }
 
-
 static void
-reset_ddr_data (pcilib_t *pci, volatile void *bar, Options *opts)
+reset_dma (pcilib_t *pci, volatile void *bar)
 {
-    /* reset DMA */
+    uint32_t value;
+
     WR32_sleep (HF_REG_BASE, HF_BASE_RESET);
     WR32_sleep (HF_REG_BASE, 0);
+    value = RD32 (HF_REG_BASE);
+    assert (value == 0x14021700 || value == 0x14031700);
+}
+
+static void
+reset_ddr_data (pcilib_t *pci, volatile void *bar, Options *opts)
+{
+    reset_dma (pci, bar);
 
     /* reset DDR and FIFOs */
     WR32_sleep (HF_REG_CONTROL,