[TG3]: Add phy workaround
Add some PHY workaround code to reduce jitter on some PHYs.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index a28accb..a307340 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1030,6 +1030,12 @@
tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x14e2);
tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0400);
}
+ else if (tp->tg3_flags2 & TG3_FLG2_PHY_JITTER_BUG) {
+ tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);
+ tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000a);
+ tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x010b);
+ tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0400);
+ }
/* Set Extended packet length bit (bit 14) on all chips that */
/* support jumbo frames */
if ((tp->phy_id & PHY_ID_MASK) == PHY_ID_BCM5401) {
@@ -10360,10 +10366,13 @@
if (tp->pci_chip_rev_id == CHIPREV_ID_5704_A0)
tp->tg3_flags2 |= TG3_FLG2_PHY_5704_A0_BUG;
- if ((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) &&
- (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5755) &&
- (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5787))
- tp->tg3_flags2 |= TG3_FLG2_PHY_BER_BUG;
+ if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS) {
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
+ GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787)
+ tp->tg3_flags2 |= TG3_FLG2_PHY_JITTER_BUG;
+ else
+ tp->tg3_flags2 |= TG3_FLG2_PHY_BER_BUG;
+ }
tp->coalesce_mode = 0;
if (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5700_AX &&
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 8c8b987..0e29b88 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2215,6 +2215,7 @@
#define TG3_FLG2_HW_TSO_2 0x08000000
#define TG3_FLG2_HW_TSO (TG3_FLG2_HW_TSO_1 | TG3_FLG2_HW_TSO_2)
#define TG3_FLG2_1SHOT_MSI 0x10000000
+#define TG3_FLG2_PHY_JITTER_BUG 0x20000000
u32 split_mode_max_reqs;
#define SPLIT_MODE_5704_MAX_REQ 3