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authorMatt Carlson <mcarlson@broadcom.com>2007-07-11 19:48:29 -0700
committerDavid S. Miller <davem@davemloft.net>2007-07-11 19:48:29 -0700
commit9ef8ca99749784644602535691f8cf201ee2a225 (patch)
tree7836b055d04f88203b8cf563272696d6fe972e95 /drivers
parente8f3f6cad7e423253090887bc4afe7bc844162da (diff)
[TG3]: Enable auto MDI.
This patch adds automatic MDI crossover support when autonegotiation is turned off. Automatic MDI crossover allows link to be established without the use of a crossover cable. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/tg3.c56
-rw-r--r--drivers/net/tg3.h8
2 files changed, 49 insertions, 15 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 1df129aa329..4f59e5c10c4 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -721,6 +721,44 @@ static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
return ret;
}
+static void tg3_phy_toggle_automdix(struct tg3 *tp, int enable)
+{
+ u32 phy;
+
+ if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) ||
+ (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES))
+ return;
+
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
+ u32 ephy;
+
+ if (!tg3_readphy(tp, MII_TG3_EPHY_TEST, &ephy)) {
+ tg3_writephy(tp, MII_TG3_EPHY_TEST,
+ ephy | MII_TG3_EPHY_SHADOW_EN);
+ if (!tg3_readphy(tp, MII_TG3_EPHYTST_MISCCTRL, &phy)) {
+ if (enable)
+ phy |= MII_TG3_EPHYTST_MISCCTRL_MDIX;
+ else
+ phy &= ~MII_TG3_EPHYTST_MISCCTRL_MDIX;
+ tg3_writephy(tp, MII_TG3_EPHYTST_MISCCTRL, phy);
+ }
+ tg3_writephy(tp, MII_TG3_EPHY_TEST, ephy);
+ }
+ } else {
+ phy = MII_TG3_AUXCTL_MISC_RDSEL_MISC |
+ MII_TG3_AUXCTL_SHDWSEL_MISC;
+ if (!tg3_writephy(tp, MII_TG3_AUX_CTRL, phy) &&
+ !tg3_readphy(tp, MII_TG3_AUX_CTRL, &phy)) {
+ if (enable)
+ phy |= MII_TG3_AUXCTL_MISC_FORCE_AMDIX;
+ else
+ phy &= ~MII_TG3_AUXCTL_MISC_FORCE_AMDIX;
+ phy |= MII_TG3_AUXCTL_MISC_WREN;
+ tg3_writephy(tp, MII_TG3_AUX_CTRL, phy);
+ }
+ }
+}
+
static void tg3_phy_set_wirespeed(struct tg3 *tp)
{
u32 val;
@@ -1045,23 +1083,11 @@ out:
}
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
- u32 phy_reg;
-
/* adjust output voltage */
tg3_writephy(tp, MII_TG3_EPHY_PTEST, 0x12);
-
- if (!tg3_readphy(tp, MII_TG3_EPHY_TEST, &phy_reg)) {
- u32 phy_reg2;
-
- tg3_writephy(tp, MII_TG3_EPHY_TEST,
- phy_reg | MII_TG3_EPHY_SHADOW_EN);
- /* Enable auto-MDIX */
- if (!tg3_readphy(tp, 0x10, &phy_reg2))
- tg3_writephy(tp, 0x10, phy_reg2 | 0x4000);
- tg3_writephy(tp, MII_TG3_EPHY_TEST, phy_reg);
- }
}
+ tg3_phy_toggle_automdix(tp, 1);
tg3_phy_set_wirespeed(tp);
return 0;
}
@@ -8847,14 +8873,14 @@ static int tg3_run_loopback(struct tg3 *tp, int loopback_mode)
phytest | MII_TG3_EPHY_SHADOW_EN);
if (!tg3_readphy(tp, 0x1b, &phy))
tg3_writephy(tp, 0x1b, phy & ~0x20);
- if (!tg3_readphy(tp, 0x10, &phy))
- tg3_writephy(tp, 0x10, phy & ~0x4000);
tg3_writephy(tp, MII_TG3_EPHY_TEST, phytest);
}
val = BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED100;
} else
val = BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
+ tg3_phy_toggle_automdix(tp, 0);
+
tg3_writephy(tp, MII_BMCR, val);
udelay(40);
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index bd9f4f428e5..e1b9381d3b4 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -1642,6 +1642,11 @@
#define MII_TG3_AUX_CTRL 0x18 /* auxilliary control register */
+#define MII_TG3_AUXCTL_MISC_WREN 0x8000
+#define MII_TG3_AUXCTL_MISC_FORCE_AMDIX 0x0200
+#define MII_TG3_AUXCTL_MISC_RDSEL_MISC 0x7000
+#define MII_TG3_AUXCTL_SHDWSEL_MISC 0x0007
+
#define MII_TG3_AUX_STAT 0x19 /* auxilliary status register */
#define MII_TG3_AUX_STAT_LPASS 0x0004
#define MII_TG3_AUX_STAT_SPDMASK 0x0700
@@ -1667,6 +1672,9 @@
#define MII_TG3_EPHY_TEST 0x1f /* 5906 PHY register */
#define MII_TG3_EPHY_SHADOW_EN 0x80
+#define MII_TG3_EPHYTST_MISCCTRL 0x10 /* 5906 EPHY misc ctrl shadow register */
+#define MII_TG3_EPHYTST_MISCCTRL_MDIX 0x4000
+
#define MII_TG3_TEST1 0x1e
#define MII_TG3_TEST1_TRIM_EN 0x0010
#define MII_TG3_TEST1_CRC_EN 0x8000