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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>
This commit is contained in:
Matt Carlson 2010-12-06 08:28:53 +00:00 committed by David S. Miller
parent a6b68dab16
commit a386b9011a
2 changed files with 33 additions and 12 deletions
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25
drivers/net/tg3.c
View File

@ -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 |
TG3_CPMU_EEEMD_LPI_IN_TX |
TG3_CPMU_EEEMD_LPI_IN_RX |
TG3_CPMU_EEEMD_EEE_ENABLE);
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;
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)

20
drivers/net/tg3.h
View File

@ -1094,13 +1094,19 @@
/* 0x3664 --> 0x36b0 unused */
#define TG3_CPMU_EEE_MODE 0x000036b0
#define TG3_CPMU_EEEMD_ERLY_L1_XIT_DET 0x00000008
#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_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
#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