tg3: Relax EEE thresholds

The hardware defaults to fairly aggressive EEE thresholds.  While there
appear to be no ill effects, this patch relaxes them, just as a
precaution.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.c

@@ -7819,11 +7819,26 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 		tw32_f(TG3_CPMU_EEE_CTRL,
 		       TG3_CPMU_EEE_CTRL_EXIT_20_1_US);
 
-		tw32_f(TG3_CPMU_EEE_MODE,
-		       TG3_CPMU_EEEMD_ERLY_L1_XIT_DET |
+		val = TG3_CPMU_EEEMD_ERLY_L1_XIT_DET |
 		      TG3_CPMU_EEEMD_LPI_IN_TX |
 		      TG3_CPMU_EEEMD_LPI_IN_RX |
-		       TG3_CPMU_EEEMD_EEE_ENABLE);
+		      TG3_CPMU_EEEMD_EEE_ENABLE;
+
+		if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5717)
+			val |= TG3_CPMU_EEEMD_SND_IDX_DET_EN;
+
+		if (tp->tg3_flags3 & TG3_FLG3_ENABLE_APE)
+			val |= TG3_CPMU_EEEMD_APE_TX_DET_EN;
+
+		tw32_f(TG3_CPMU_EEE_MODE, val);
+
+		tw32_f(TG3_CPMU_EEE_DBTMR1,
+		       TG3_CPMU_DBTMR1_PCIEXIT_2047US |
+		       TG3_CPMU_DBTMR1_LNKIDLE_2047US);
+
+		tw32_f(TG3_CPMU_EEE_DBTMR2,
+		       TG3_CPMU_DBTMR1_APE_TX_2047US |
+		       TG3_CPMU_DBTMR2_TXIDXEQ_2047US);
 	}
 
 	if (reset_phy)

drivers/net/tg3.h

@@ -1094,13 +1094,19 @@
 /* 0x3664 --> 0x36b0 unused */
 
 #define TG3_CPMU_EEE_MODE		0x000036b0
+#define  TG3_CPMU_EEEMD_APE_TX_DET_EN	 0x00000004
 #define  TG3_CPMU_EEEMD_ERLY_L1_XIT_DET	 0x00000008
+#define  TG3_CPMU_EEEMD_SND_IDX_DET_EN	 0x00000040
 #define  TG3_CPMU_EEEMD_LPI_ENABLE	 0x00000080
 #define  TG3_CPMU_EEEMD_LPI_IN_TX	 0x00000100
 #define  TG3_CPMU_EEEMD_LPI_IN_RX	 0x00000200
 #define  TG3_CPMU_EEEMD_EEE_ENABLE	 0x00100000
-/* 0x36b4 --> 0x36b8 unused */
-
+#define TG3_CPMU_EEE_DBTMR1		0x000036b4
+#define  TG3_CPMU_DBTMR1_PCIEXIT_2047US	 0x07ff0000
+#define  TG3_CPMU_DBTMR1_LNKIDLE_2047US	 0x000070ff
+#define TG3_CPMU_EEE_DBTMR2		0x000036b8
+#define  TG3_CPMU_DBTMR1_APE_TX_2047US	 0x07ff0000
+#define  TG3_CPMU_DBTMR2_TXIDXEQ_2047US	 0x000070ff
 #define TG3_CPMU_EEE_LNKIDL_CTRL	0x000036bc
 #define  TG3_CPMU_EEE_LNKIDL_PCIE_NL0	 0x01000000
 #define  TG3_CPMU_EEE_LNKIDL_UART_IDL	 0x00000004