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[TG3]: Add loopback test

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The test will loopback one packet in MAC loopback mode and verify the
packet data.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2005-05-29 14:58:59 -07:00 committed by David S. Miller
parent 7942e1dbd7
commit c76949a682
1 changed files with 115 additions and 0 deletions
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115
drivers/net/tg3.c
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@ -7576,6 +7576,117 @@ static int tg3_test_memory(struct tg3 *tp)
return err;
}
static int tg3_test_loopback(struct tg3 *tp)
{
u32 mac_mode, send_idx, rx_start_idx, rx_idx, tx_idx, opaque_key;
u32 desc_idx;
struct sk_buff *skb, *rx_skb;
u8 *tx_data;
dma_addr_t map;
int num_pkts, tx_len, rx_len, i, err;
struct tg3_rx_buffer_desc *desc;
if (!netif_running(tp->dev))
return -ENODEV;
err = -EIO;
tg3_abort_hw(tp, 1);
/* Clearing this flag to keep interrupts disabled */
tp->tg3_flags &= ~TG3_FLAG_INIT_COMPLETE;
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);
memcpy(tx_data, tp->dev->dev_addr, 6);
memset(tx_data + 6, 0x0, 8);
tw32(MAC_RX_MTU_SIZE, tx_len + 4);
for (i = 14; i < tx_len; i++)
tx_data[i] = (u8) (i & 0xff);
map = pci_map_single(tp->pdev, skb->data, tx_len, PCI_DMA_TODEVICE);
tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
HOSTCC_MODE_NOW);
udelay(10);
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);
send_idx++;
num_pkts++;
tw32_tx_mbox(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW, send_idx);
tr32(MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW);
udelay(10);
for (i = 0; i < 10; i++) {
tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
HOSTCC_MODE_NOW);
udelay(10);
tx_idx = tp->hw_status->idx[0].tx_consumer;
rx_idx = tp->hw_status->idx[0].rx_producer;
if ((tx_idx == send_idx) &&
(rx_idx == (rx_start_idx + num_pkts)))
break;
}
pci_unmap_single(tp->pdev, map, tx_len, PCI_DMA_TODEVICE);
dev_kfree_skb(skb);
if (tx_idx != send_idx)
goto out;
if (rx_idx != rx_start_idx + num_pkts)
goto out;
desc = &tp->rx_rcb[rx_start_idx];
desc_idx = desc->opaque & RXD_OPAQUE_INDEX_MASK;
opaque_key = desc->opaque & RXD_OPAQUE_RING_MASK;
if (opaque_key != RXD_OPAQUE_RING_STD)
goto out;
if ((desc->err_vlan & RXD_ERR_MASK) != 0 &&
(desc->err_vlan != RXD_ERR_ODD_NIBBLE_RCVD_MII))
goto out;
rx_len = ((desc->idx_len & RXD_LEN_MASK) >> RXD_LEN_SHIFT) - 4;
if (rx_len != tx_len)
goto out;
rx_skb = tp->rx_std_buffers[desc_idx].skb;
map = pci_unmap_addr(&tp->rx_std_buffers[desc_idx], mapping);
pci_dma_sync_single_for_cpu(tp->pdev, map, rx_len, PCI_DMA_FROMDEVICE);
for (i = 14; i < tx_len; i++) {
if (*(rx_skb->data + i) != (u8) (i & 0xff))
goto out;
}
err = 0;
/* tg3_free_rings will unmap and free the rx_skb */
out:
return err;
}
static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
u64 *data)
{
@ -7613,6 +7724,10 @@ 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) {
etest->flags |= ETH_TEST_FL_FAILED;
data[4] = 1;
}
tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
if (netif_running(dev)) {