diff options
| author | Michael Chan <mchan@broadcom.com> | 2012-03-04 18:48:13 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-05 05:39:31 +0400 |
| commit | c441b456767357322dbc14b55bdc7da0051d0d98 (patch) | |
| tree | d45342e5023639107919d97d67cac3c7ad4ccea5 | |
| parent | 2556cd8603cd1f39205aaf61f054a76133359ae6 (diff) | |
| download | linux-c441b456767357322dbc14b55bdc7da0051d0d98.tar.xz | |
tg3: Fix jumbo loopback test on 5719
Loopback on 9K packet fails because the chip has a DMA limit of 4K. The
loopback test logic uses a single BD for simplicity. Fix it by reducing
the jumbo packet size to the DMA limit.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/broadcom/tg3.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 76f33d5c7272..4b3243b2bdf1 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -11727,6 +11727,10 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, bool tso_loopback) } else { num_pkts = 1; data_off = ETH_HLEN; + + if (tg3_flag(tp, USE_JUMBO_BDFLAG) && + tx_len > VLAN_ETH_FRAME_LEN) + base_flags |= TXD_FLAG_JMB_PKT; } for (i = data_off; i < tx_len; i++) @@ -11857,6 +11861,10 @@ static int tg3_test_loopback(struct tg3 *tp, u64 *data, bool do_extlpbk) { int err = -EIO; u32 eee_cap; + u32 jmb_pkt_sz = 9000; + + if (tp->dma_limit) + jmb_pkt_sz = tp->dma_limit - ETH_HLEN; eee_cap = tp->phy_flags & TG3_PHYFLG_EEE_CAP; tp->phy_flags &= ~TG3_PHYFLG_EEE_CAP; @@ -11900,7 +11908,7 @@ static int tg3_test_loopback(struct tg3 *tp, u64 *data, bool do_extlpbk) data[0] |= TG3_STD_LOOPBACK_FAILED; if (tg3_flag(tp, JUMBO_RING_ENABLE) && - tg3_run_loopback(tp, 9000 + ETH_HLEN, false)) + tg3_run_loopback(tp, jmb_pkt_sz + ETH_HLEN, false)) data[0] |= TG3_JMB_LOOPBACK_FAILED; tg3_mac_loopback(tp, false); @@ -11925,7 +11933,7 @@ static int tg3_test_loopback(struct tg3 *tp, u64 *data, bool do_extlpbk) tg3_run_loopback(tp, ETH_FRAME_LEN, true)) data[1] |= TG3_TSO_LOOPBACK_FAILED; if (tg3_flag(tp, JUMBO_RING_ENABLE) && - tg3_run_loopback(tp, 9000 + ETH_HLEN, false)) + tg3_run_loopback(tp, jmb_pkt_sz + ETH_HLEN, false)) data[1] |= TG3_JMB_LOOPBACK_FAILED; if (do_extlpbk) { @@ -11943,7 +11951,7 @@ static int tg3_test_loopback(struct tg3 *tp, u64 *data, bool do_extlpbk) tg3_run_loopback(tp, ETH_FRAME_LEN, true)) data[2] |= TG3_TSO_LOOPBACK_FAILED; if (tg3_flag(tp, JUMBO_RING_ENABLE) && - tg3_run_loopback(tp, 9000 + ETH_HLEN, false)) + tg3_run_loopback(tp, jmb_pkt_sz + ETH_HLEN, false)) data[2] |= TG3_JMB_LOOPBACK_FAILED; } |