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[TG3]: Add PHY loopback test 

Improve ethtool loopback self test by adding PHY loopback to the
existing MAC loopback test.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2005-09-05 17:53:06 -07:00 committed by David S. Miller
parent 4009a93d8e
commit 9f40dead25
1 changed files with 53 additions and 20 deletions
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73
drivers/net/tg3.c
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@ -7935,9 +7935,12 @@ static int tg3_test_memory(struct tg3 *tp)
return err;
}
static int tg3_test_loopback(struct tg3 *tp)
#define TG3_MAC_LOOPBACK 0
#define TG3_PHY_LOOPBACK 1
static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
{
u32 mac_mode, send_idx, rx_start_idx, rx_idx, tx_idx, opaque_key;
u32 mac_mode, rx_start_idx, rx_idx, tx_idx, opaque_key;
u32 desc_idx;
struct sk_buff *skb, *rx_skb;
u8 *tx_data;
@ -7945,18 +7948,26 @@ static int tg3_test_loopback(struct tg3 *tp)
int num_pkts, tx_len, rx_len, i, err;
struct tg3_rx_buffer_desc *desc;
if (!netif_running(tp->dev))
return -ENODEV;
if (loopback_mode == TG3_MAC_LOOPBACK) {
mac_mode = (tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK) |
MAC_MODE_PORT_INT_LPBACK | MAC_MODE_LINK_POLARITY |
MAC_MODE_PORT_MODE_GMII;
tw32(MAC_MODE, mac_mode);
} else if (loopback_mode == TG3_PHY_LOOPBACK) {
mac_mode = (tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK) |
MAC_MODE_LINK_POLARITY | MAC_MODE_PORT_MODE_GMII;
if ((tp->phy_id & PHY_ID_MASK) == PHY_ID_BCM5401)
mac_mode &= ~MAC_MODE_LINK_POLARITY;
tw32(MAC_MODE, mac_mode);
tg3_writephy(tp, MII_BMCR, BMCR_LOOPBACK | BMCR_FULLDPLX |
BMCR_SPEED1000);
}
else
return -EINVAL;
err = -EIO;
tg3_reset_hw(tp);
mac_mode = (tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK) |
MAC_MODE_PORT_INT_LPBACK | MAC_MODE_LINK_POLARITY |
MAC_MODE_PORT_MODE_GMII;
tw32(MAC_MODE, mac_mode);
tx_len = 1514;
skb = dev_alloc_skb(tx_len);
tx_data = skb_put(skb, tx_len);
@ -7977,15 +7988,15 @@ static int tg3_test_loopback(struct tg3 *tp)
rx_start_idx = tp->hw_status->idx[0].rx_producer;
send_idx = 0;
num_pkts = 0;
tg3_set_txd(tp, send_idx, map, tx_len, 0, 1);
tg3_set_txd(tp, tp->tx_prod, map, tx_len, 0, 1);
send_idx++;
tp->tx_prod++;
num_pkts++;
tw32_tx_mbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW, send_idx);
tw32_tx_mbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW,
tp->tx_prod);
tr32_mailbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW);
udelay(10);
@ -7998,7 +8009,7 @@ static int tg3_test_loopback(struct tg3 *tp)
tx_idx = tp->hw_status->idx[0].tx_consumer;
rx_idx = tp->hw_status->idx[0].rx_producer;
if ((tx_idx == send_idx) &&
if ((tx_idx == tp->tx_prod) &&
(rx_idx == (rx_start_idx + num_pkts)))
break;
}
@ -8006,7 +8017,7 @@ static int tg3_test_loopback(struct tg3 *tp)
pci_unmap_single(tp->pdev, map, tx_len, PCI_DMA_TODEVICE);
dev_kfree_skb(skb);
if (tx_idx != send_idx)
if (tx_idx != tp->tx_prod)
goto out;
if (rx_idx != rx_start_idx + num_pkts)
@ -8042,6 +8053,30 @@ out:
return err;
}
#define TG3_MAC_LOOPBACK_FAILED 1
#define TG3_PHY_LOOPBACK_FAILED 2
#define TG3_LOOPBACK_FAILED (TG3_MAC_LOOPBACK_FAILED | \
TG3_PHY_LOOPBACK_FAILED)
static int tg3_test_loopback(struct tg3 *tp)
{
int err = 0;
if (!netif_running(tp->dev))
return TG3_LOOPBACK_FAILED;
tg3_reset_hw(tp);
if (tg3_run_loopback(tp, TG3_MAC_LOOPBACK))
err |= TG3_MAC_LOOPBACK_FAILED;
if (!(tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)) {
if (tg3_run_loopback(tp, TG3_PHY_LOOPBACK))
err |= TG3_PHY_LOOPBACK_FAILED;
}
return err;
}
static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
u64 *data)
{
@ -8082,10 +8117,8 @@ static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
etest->flags |= ETH_TEST_FL_FAILED;
data[3] = 1;
}
if (tg3_test_loopback(tp) != 0) {
if ((data[4] = tg3_test_loopback(tp)) != 0)
etest->flags |= ETH_TEST_FL_FAILED;
data[4] = 1;
}
tg3_full_unlock(tp);