Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b0cd2f9016f75eb8a9fdc45d32f9b41fb16d48c9
Commit: b0cd2f9016f75eb8a9fdc45d32f9b41fb16d48c9
Parent: 8304b633c5e8c9ba34d3cc7f24f52434d3a3b93b
Author: Olof Johansson <[EMAIL PROTECTED]>
AuthorDate: Wed Nov 28 20:58:25 2007 -0600
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 15:04:27 2008 -0800
pasemi_mac: Don't enable RX/TX without a link (if possible)
pasemi_mac: Don't enable RX/TX without a link (if possible)
Don't enable RX/TX of packets until we have a link, since there's a chance
we'll just get RX frame errors, etc.
The case where we don't have a PHY we can't do much about: Just enable
it and deal with errors as they come in.
Signed-off-by: Olof Johansson <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/net/pasemi_mac.c | 41 +++++++++++++++++++++++++++++++++--------
1 files changed, 33 insertions(+), 8 deletions(-)
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index 7345a81..bb88a41 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -874,6 +874,24 @@ static irqreturn_t pasemi_mac_tx_intr(int irq, void *data)
return IRQ_HANDLED;
}
+static void pasemi_mac_intf_disable(struct pasemi_mac *mac)
+{
+ unsigned int flags;
+
+ flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
+ flags &= ~PAS_MAC_CFG_PCFG_PE;
+ write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags);
+}
+
+static void pasemi_mac_intf_enable(struct pasemi_mac *mac)
+{
+ unsigned int flags;
+
+ flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
+ flags |= PAS_MAC_CFG_PCFG_PE;
+ write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags);
+}
+
static void pasemi_adjust_link(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
@@ -889,11 +907,14 @@ static void pasemi_adjust_link(struct net_device *dev)
printk(KERN_INFO "%s: Link is down.\n", dev->name);
netif_carrier_off(dev);
+ pasemi_mac_intf_disable(mac);
mac->link = 0;
return;
- } else
+ } else {
+ pasemi_mac_intf_enable(mac);
netif_carrier_on(dev);
+ }
flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
new_flags = flags & ~(PAS_MAC_CFG_PCFG_HD | PAS_MAC_CFG_PCFG_SPD_M |
@@ -1052,8 +1073,7 @@ static int pasemi_mac_open(struct net_device *dev)
pasemi_mac_restart_rx_intr(mac);
pasemi_mac_restart_tx_intr(mac);
- flags = PAS_MAC_CFG_PCFG_S1 | PAS_MAC_CFG_PCFG_PE |
- PAS_MAC_CFG_PCFG_PR | PAS_MAC_CFG_PCFG_CE;
+ flags = PAS_MAC_CFG_PCFG_S1 | PAS_MAC_CFG_PCFG_PR | PAS_MAC_CFG_PCFG_CE;
if (mac->type == MAC_TYPE_GMAC)
flags |= PAS_MAC_CFG_PCFG_TSR_1G | PAS_MAC_CFG_PCFG_SPD_1G;
@@ -1064,11 +1084,16 @@ static int pasemi_mac_open(struct net_device *dev)
write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags);
ret = pasemi_mac_phy_init(dev);
- /* Warn for missing PHY on SGMII (1Gig) ports.
- */
- if (ret && mac->type == MAC_TYPE_GMAC) {
- dev_warn(&mac->pdev->dev, "PHY init failed: %d.\n", ret);
- dev_warn(&mac->pdev->dev, "Defaulting to 1Gbit full duplex\n");
+ if (ret) {
+ /* Since we won't get link notification, just enable RX */
+ pasemi_mac_intf_enable(mac);
+ if (mac->type == MAC_TYPE_GMAC) {
+ /* Warn for missing PHY on SGMII (1Gig) ports */
+ dev_warn(&mac->pdev->dev,
+ "PHY init failed: %d.\n", ret);
+ dev_warn(&mac->pdev->dev,
+ "Defaulting to 1Gbit full duplex\n");
+ }
}
netif_start_queue(dev);
-
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