diff options
| author | Peter Crosthwaite <peter.crosthwaite@xilinx.com> | 2013-12-03 22:01:28 -0800 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-12-10 13:28:50 +0000 |
| commit | 3ae5725f86a82751cccf6bc075e5ebfb327ac283 (patch) | |
| tree | c6df9bbaf58a2543937f3722d346fdc4ea2c86fc /hw/net/cadence_gem.c | |
| parent | e2314fda62c42c89f91dcf104ed3702170a90308 (diff) | |
net/cadence_gem: Improve can_receive debug printfery
Currently this just floods indicating that can_receive has been called
by the net framework. Instead, save the result of the most recent
can_receive callback as state and only print a message if the result
changes (indicating some sort of actual state change in GEM). Make said
debug message more meaningful as well.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 2eb74ca6a5756aea242d9f525961db95d6cfcf2c.1386136219.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/net/cadence_gem.c')
| -rw-r--r-- | hw/net/cadence_gem.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index f2c734ef2b..f6e38cacfc 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -380,6 +380,8 @@ typedef struct GemState { uint32_t rx_desc_addr; uint32_t tx_desc_addr; + uint8_t can_rx_state; /* Debug only */ + unsigned rx_desc[2]; bool sar_active[4]; @@ -452,13 +454,19 @@ static int gem_can_receive(NetClientState *nc) s = qemu_get_nic_opaque(nc); - DB_PRINT("\n"); - /* Do nothing if receive is not enabled. */ if (!(s->regs[GEM_NWCTRL] & GEM_NWCTRL_RXENA)) { + if (s->can_rx_state != 1) { + s->can_rx_state = 1; + DB_PRINT("can't receive - no enable\n"); + } return 0; } + if (s->can_rx_state != 0) { + s->can_rx_state = 0; + DB_PRINT("can receive 0x%x\n", s->rx_desc_addr); + } return 1; } |