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authorStephen Hemminger <shemminger@linux-foundation.org>2007-11-05 15:52:10 -0800
committerJeff Garzik <jeff@garzik.org>2007-11-10 04:25:08 -0500
commitaf043aa54fd45774e61979d1748616c2a67f0da8 (patch)
treeee4df2ee14195776b537f4509e3049c0ae729661 /drivers
parentsky2: status ring race fix (diff)
downloadlinux-dev-af043aa54fd45774e61979d1748616c2a67f0da8.tar.xz
linux-dev-af043aa54fd45774e61979d1748616c2a67f0da8.zip
sky2: longer PHY delay
Increse phy delay and handle I/O errors. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/sky2.c35
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 706884ae8fcd..eaab3d87dcf3 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -156,7 +156,7 @@ static const char *yukon2_name[] = {
static void sky2_set_multicast(struct net_device *dev);
-/* Access to external PHY */
+/* Access to PHY via serial interconnect */
static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
{
int i;
@@ -166,13 +166,22 @@ static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
for (i = 0; i < PHY_RETRIES; i++) {
- if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
+ u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
+ if (ctrl == 0xffff)
+ goto io_error;
+
+ if (!(ctrl & GM_SMI_CT_BUSY))
return 0;
- udelay(1);
+
+ udelay(10);
}
- printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
+ dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
return -ETIMEDOUT;
+
+io_error:
+ dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
+ return -EIO;
}
static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
@@ -183,23 +192,29 @@ static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
| GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
for (i = 0; i < PHY_RETRIES; i++) {
- if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
+ u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
+ if (ctrl == 0xffff)
+ goto io_error;
+
+ if (ctrl & GM_SMI_CT_RD_VAL) {
*val = gma_read16(hw, port, GM_SMI_DATA);
return 0;
}
- udelay(1);
+ udelay(10);
}
+ dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
return -ETIMEDOUT;
+io_error:
+ dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
+ return -EIO;
}
-static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
+static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
{
u16 v;
-
- if (__gm_phy_read(hw, port, reg, &v) != 0)
- printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
+ __gm_phy_read(hw, port, reg, &v);
return v;
}