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dmfe: Fix link detection 

Add link detection

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Valerie Henson <val_henson@linux.intel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Maxim Levitsky 2007-03-06 02:41:53 -08:00 committed by Jeff Garzik
parent 4dc68f3de5
commit cfa51b9dbf
1 changed files with 39 additions and 17 deletions
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56
drivers/net/tulip/dmfe.c
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@ -248,7 +248,6 @@ struct dmfe_board_info {
u8 media_mode; /* user specify media mode */
u8 op_mode; /* real work media mode */
u8 phy_addr;
u8 link_failed; /* Ever link failed */
u8 wait_reset; /* Hardware failed, need to reset */
u8 dm910x_chk_mode; /* Operating mode check */
u8 first_in_callback; /* Flag to record state */
@ -447,6 +446,7 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
dev->poll_controller = &poll_dmfe;
#endif
dev->ethtool_ops = &netdev_ethtool_ops;
netif_carrier_off(dev);
spin_lock_init(&db->lock);
pci_read_config_dword(pdev, 0x50, &pci_pmr);
@ -541,7 +541,6 @@ static int dmfe_open(struct DEVICE *dev)
db->tx_packet_cnt = 0;
db->tx_queue_cnt = 0;
db->rx_avail_cnt = 0;
db->link_failed = 1;
db->wait_reset = 0;
db->first_in_callback = 0;
@ -1082,6 +1081,7 @@ static void netdev_get_drvinfo(struct net_device *dev,
static const struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
.get_link = ethtool_op_get_link,
};
/*
@ -1097,6 +1097,8 @@ static void dmfe_timer(unsigned long data)
struct dmfe_board_info *db = netdev_priv(dev);
unsigned long flags;
int link_ok, link_ok_phy;
DMFE_DBUG(0, "dmfe_timer()", 0);
spin_lock_irqsave(&db->lock, flags);
@ -1168,15 +1170,35 @@ static void dmfe_timer(unsigned long data)
(db->chip_revision == 0x02000010)) ) {
/* DM9102A Chip */
if (tmp_cr12 & 2)
tmp_cr12 = 0x0; /* Link failed */
link_ok = 0;
else
tmp_cr12 = 0x3; /* Link OK */
link_ok = 1;
}
else
/*0x43 is used instead of 0x3 because bit 6 should represent
link status of external PHY */
link_ok = (tmp_cr12 & 0x43) ? 1 : 0;
if ( !(tmp_cr12 & 0x3) && !db->link_failed ) {
/* If chip reports that link is failed it could be because external
PHY link status pin is not conected correctly to chip
To be sure ask PHY too.
*/
/* need a dummy read because of PHY's register latch*/
phy_read (db->ioaddr, db->phy_addr, 1, db->chip_id);
link_ok_phy = (phy_read (db->ioaddr,
db->phy_addr, 1, db->chip_id) & 0x4) ? 1 : 0;
if (link_ok_phy != link_ok) {
DMFE_DBUG (0, "PHY and chip report different link status", 0);
link_ok = link_ok | link_ok_phy;
}
if ( !link_ok && netif_carrier_ok(dev)) {
/* Link Failed */
DMFE_DBUG(0, "Link Failed", tmp_cr12);
db->link_failed = 1;
netif_carrier_off(dev);
/* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
/* AUTO or force 1M Homerun/Longrun don't need */
@ -1191,19 +1213,19 @@ static void dmfe_timer(unsigned long data)
db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
update_cr6(db->cr6_data, db->ioaddr);
}
} else
if ((tmp_cr12 & 0x3) && db->link_failed) {
DMFE_DBUG(0, "Link link OK", tmp_cr12);
db->link_failed = 0;
} else if (!netif_carrier_ok(dev)) {
/* Auto Sense Speed */
if ( (db->media_mode & DMFE_AUTO) &&
dmfe_sense_speed(db) )
db->link_failed = 1;
dmfe_process_mode(db);
/* SHOW_MEDIA_TYPE(db->op_mode); */
DMFE_DBUG(0, "Link link OK", tmp_cr12);
/* Auto Sense Speed */
if ( !(db->media_mode & DMFE_AUTO) || !dmfe_sense_speed(db)) {
netif_carrier_on(dev);
SHOW_MEDIA_TYPE(db->op_mode);
}
dmfe_process_mode(db);
}
/* HPNA remote command check */
if (db->HPNA_command & 0xf00) {
db->HPNA_timer--;
@ -1248,7 +1270,7 @@ static void dmfe_dynamic_reset(struct DEVICE *dev)
db->tx_packet_cnt = 0;
db->tx_queue_cnt = 0;
db->rx_avail_cnt = 0;
db->link_failed = 1;
netif_carrier_off(dev);
db->wait_reset = 0;
/* Re-initilize DM910X board */