diff mbox

[net,v1,2/4] net: cadence_gem: Add Tx descriptor fetch printf

Message ID 6dbfa0d540f76d049381004d5ccda99dbffa4cbe.1399449874.git.peter.crosthwaite@xilinx.com
State New
Headers show

Commit Message

Peter Crosthwaite May 7, 2014, 9:16 a.m. UTC 
Add a debug printf for TX descriptor fetching. This helpful to anyone
needing to debug TX ring buffer traversal. Its also now consistent with
the RX code which has a similar printf.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
---

 hw/net/cadence_gem.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index 1c36e48..f999886 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -886,6 +886,8 @@  static void gem_transmit(GemState *s)
 
     /* read current descriptor */
     packet_desc_addr = s->tx_desc_addr;
+
+    DB_PRINT("read descriptor 0x%x\n", (unsigned)packet_desc_addr);
     cpu_physical_memory_read(packet_desc_addr,
                              (uint8_t *)&desc[0], sizeof(desc));
     /* Handle all descriptors owned by hardware */
@@ -968,6 +970,7 @@  static void gem_transmit(GemState *s)
         } else {
             packet_desc_addr += 8;
         }
+        DB_PRINT("read descriptor 0x%x\n", (unsigned)packet_desc_addr);
         cpu_physical_memory_read(packet_desc_addr,
                                  (uint8_t *)&desc[0], sizeof(desc));
     }