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tg3: Fix 57765 B0 data corruption 

The PCIe max FTS limit is too aggressive on these chips.  This patch
loosens the limit a little to eliminate data corruption issues.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson 2011-05-19 12:12:46 +00:00 committed by David S. Miller
parent 432aa7ed75
commit 1ff30a59f6
2 changed files with 20 additions and 0 deletions
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16
drivers/net/tg3.c
View File

@ -7990,6 +7990,22 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
tw32(GRC_MODE, grc_mode);
}
if (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_57765_AX) {
u32 grc_mode = tr32(GRC_MODE);
/* Access the lower 1K of DL PCIE block registers. */
val = grc_mode & ~GRC_MODE_PCIE_PORT_MASK;
tw32(GRC_MODE, val | GRC_MODE_PCIE_DL_SEL);
val = tr32(TG3_PCIE_TLDLPL_PORT +
TG3_PCIE_DL_LO_FTSMAX);
val &= ~TG3_PCIE_DL_LO_FTSMAX_MSK;
tw32(TG3_PCIE_TLDLPL_PORT + TG3_PCIE_DL_LO_FTSMAX,
val | TG3_PCIE_DL_LO_FTSMAX_VAL);
tw32(GRC_MODE, grc_mode);
}
val = tr32(TG3_CPMU_LSPD_10MB_CLK);
val &= ~CPMU_LSPD_10MB_MACCLK_MASK;
val |= CPMU_LSPD_10MB_MACCLK_6_25;

4
drivers/net/tg3.h
View File

@ -180,6 +180,7 @@
#define CHIPREV_5750_BX 0x41
#define CHIPREV_5784_AX 0x57840
#define CHIPREV_5761_AX 0x57610
#define CHIPREV_57765_AX 0x577650
#define GET_METAL_REV(CHIP_REV_ID) ((CHIP_REV_ID) & 0xff)
#define METAL_REV_A0 0x00
#define METAL_REV_A1 0x01
@ -1951,6 +1952,9 @@
/* Alternate PCIE definitions */
#define TG3_PCIE_TLDLPL_PORT 0x00007c00
#define TG3_PCIE_DL_LO_FTSMAX 0x0000000c
#define TG3_PCIE_DL_LO_FTSMAX_MSK 0x000000ff
#define TG3_PCIE_DL_LO_FTSMAX_VAL 0x0000002c
#define TG3_PCIE_PL_LO_PHYCTL1 0x00000004
#define TG3_PCIE_PL_LO_PHYCTL1_L1PLLPD_EN 0x00001000
#define TG3_PCIE_PL_LO_PHYCTL5 0x00000014