cadence_gem: Add debug msgs for rx desc movement

Add some helpful messages that show the rx descriptor pointer moving as packets
are rxed.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1ef2eb34dade64d589a69a2bcfd5aaddb7d50164.1360901435.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/hw/cadence_gem.c b/hw/cadence_gem.c
index 61f1801273b5996692cbeab93d0e1988f166b613..de7d15ab76767c1ca0ad23c13af26715202a5ec9 100644 (file)
--- a/hw/cadence_gem.c
+++ b/hw/cadence_gem.c
@@ -724,7 +724,9 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
     s->rx_desc_addr = last_desc_addr;
     if (rx_desc_get_wrap(desc)) {
         s->rx_desc_addr = s->regs[GEM_RXQBASE];
+        DB_PRINT("wrapping RX descriptor list\n");
     } else {
+        DB_PRINT("incrementing RX descriptor list\n");
         s->rx_desc_addr += 8;
     }