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tg3: Fix 57780 asic rev PCIe link receiver errors

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This patch fixes some PCIe link receiver errors by decreasing the internal
electrical idle timeout.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@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 2009-08-25 10:06:01 +00:00 committed by David S. Miller
parent c46b59b241
commit 521e6b90dd
2 changed files with 16 additions and 2 deletions
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5
drivers/net/tg3.c
View File

@ -6719,6 +6719,11 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
val |= PCIE_PWR_MGMT_EXT_ASPM_TMR_EN |
PCIE_PWR_MGMT_L1_THRESH_4MS;
tw32(PCIE_PWR_MGMT_THRESH, val);
val = tr32(TG3_PCIE_EIDLE_DELAY) & ~TG3_PCIE_EIDLE_DELAY_MASK;
tw32(TG3_PCIE_EIDLE_DELAY, val | TG3_PCIE_EIDLE_DELAY_13_CLKS);
tw32(TG3_CORR_ERR_STAT, TG3_CORR_ERR_STAT_CLEAR);
}
/* This works around an issue with Athlon chipsets on

13
drivers/net/tg3.h
View File

@ -214,9 +214,11 @@
#define DUAL_MAC_CTRL_ID 0x00000004
#define TG3PCI_PRODID_ASICREV 0x000000bc
#define PROD_ID_ASIC_REV_MASK 0x0fffffff
/* 0xc0 --> 0x100 unused */
/* 0xc0 --> 0x110 unused */
/* 0x100 --> 0x200 unused */
#define TG3_CORR_ERR_STAT 0x00000110
#define TG3_CORR_ERR_STAT_CLEAR 0xffffffff
/* 0x114 --> 0x200 unused */
/* Mailbox registers */
#define MAILBOX_INTERRUPT_0 0x00000200 /* 64-bit */
@ -1696,11 +1698,18 @@
#define PCIE_TRANSACTION_CFG 0x00007c04
#define PCIE_TRANS_CFG_1SHOT_MSI 0x20000000
#define PCIE_TRANS_CFG_LOM 0x00000020
/* 0x7c08 --> 0x7d28 unused */
#define PCIE_PWR_MGMT_THRESH 0x00007d28
#define PCIE_PWR_MGMT_L1_THRESH_MSK 0x0000ff00
#define PCIE_PWR_MGMT_L1_THRESH_4MS 0x0000ff00
#define PCIE_PWR_MGMT_EXT_ASPM_TMR_EN 0x01000000
/* 0x7d2c --> 0x7e70 unused */
#define TG3_PCIE_EIDLE_DELAY 0x00007e70
#define TG3_PCIE_EIDLE_DELAY_MASK 0x0000001f
#define TG3_PCIE_EIDLE_DELAY_13_CLKS 0x0000000c
/* 0x7e74 --> 0x8000 unused */
/* OTP bit definitions */