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authorStephen Hemminger <shemminger@osdl.org>2006-02-10 15:58:59 -0800
committerJeff Garzik <jgarzik@pobox.com>2006-02-17 16:16:21 -0500
commit6f4c56b2ae10b680be518cc99f5308fc59236db2 (patch)
treee9e64b3392a99fc6f4abd72428176f8100805af5 /drivers
parent564f9abb34c936e5d0c7682129042dad14dbbb95 (diff)
[PATCH] sky2: speed setting fix
Users report problems w/ auto-negotiation disabled and the link set to 100/Half or 10/Half. Problems range from poor performance to no link at all. The current sky2 code does not set things properly on link up if autonegotiation is disabled. Plus it does not contemplate a 10Mbit setting at all. This patch corrects that. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/sky2.c31
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index cae2edf23004..bfeba5b9cd7a 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -520,10 +520,16 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
switch (sky2->speed) {
case SPEED_1000:
+ reg &= ~GM_GPCR_SPEED_100;
reg |= GM_GPCR_SPEED_1000;
- /* fallthru */
+ break;
case SPEED_100:
+ reg &= ~GM_GPCR_SPEED_1000;
reg |= GM_GPCR_SPEED_100;
+ break;
+ case SPEED_10:
+ reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
+ break;
}
if (sky2->duplex == DUPLEX_FULL)
@@ -1446,6 +1452,29 @@ static void sky2_link_up(struct sky2_port *sky2)
sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
reg = gma_read16(hw, port, GM_GP_CTRL);
+ if (sky2->autoneg == AUTONEG_DISABLE) {
+ reg |= GM_GPCR_AU_ALL_DIS;
+
+ /* Is write/read necessary? Copied from sky2_mac_init */
+ gma_write16(hw, port, GM_GP_CTRL, reg);
+ gma_read16(hw, port, GM_GP_CTRL);
+
+ switch (sky2->speed) {
+ case SPEED_1000:
+ reg &= ~GM_GPCR_SPEED_100;
+ reg |= GM_GPCR_SPEED_1000;
+ break;
+ case SPEED_100:
+ reg &= ~GM_GPCR_SPEED_1000;
+ reg |= GM_GPCR_SPEED_100;
+ break;
+ case SPEED_10:
+ reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
+ break;
+ }
+ } else
+ reg &= ~GM_GPCR_AU_ALL_DIS;
+
if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
reg |= GM_GPCR_DUP_FULL;