diff options
| author | Matt Carlson <mcarlson@broadcom.com> | 2009-11-02 14:25:06 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-02 23:39:02 -0800 |
| commit | 52cdf8526fe24f11d300b75458ddee017f3f4c88 (patch) | |
| tree | bbee325ec108529b37633738a69f7830bac876f8 /drivers/net | |
| parent | 3f0e3ad72393db9c2932a2ca86cc1a49294bbc63 (diff) | |
| download | linux-52cdf8526fe24f11d300b75458ddee017f3f4c88.tar.bz2 | |
tg3: Prevent a PCIe tx glitch
This patch prevents a PCIe tx glitch by allowing the transmitter to go
to a low power state.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/tg3.c | 24 | ||||
| -rw-r--r-- | drivers/net/tg3.h | 26 |
2 files changed, 49 insertions, 1 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 1c53250e4007..53a193e0d45c 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -6589,6 +6589,30 @@ static int tg3_chip_reset(struct tg3 *tp) tg3_mdio_start(tp); + if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780) { + u8 phy_addr; + + phy_addr = tp->phy_addr; + tp->phy_addr = TG3_PHY_PCIE_ADDR; + + tg3_writephy(tp, TG3_PCIEPHY_BLOCK_ADDR, + TG3_PCIEPHY_TXB_BLK << TG3_PCIEPHY_BLOCK_SHIFT); + val = TG3_PCIEPHY_TX0CTRL1_TXOCM | TG3_PCIEPHY_TX0CTRL1_RDCTL | + TG3_PCIEPHY_TX0CTRL1_TXCMV | TG3_PCIEPHY_TX0CTRL1_TKSEL | + TG3_PCIEPHY_TX0CTRL1_NB_EN; + tg3_writephy(tp, TG3_PCIEPHY_TX0CTRL1, val); + udelay(10); + + tg3_writephy(tp, TG3_PCIEPHY_BLOCK_ADDR, + TG3_PCIEPHY_XGXS_BLK1 << TG3_PCIEPHY_BLOCK_SHIFT); + val = TG3_PCIEPHY_PWRMGMT4_LOWPWR_EN | + TG3_PCIEPHY_PWRMGMT4_L1PLLPD_EN; + tg3_writephy(tp, TG3_PCIEPHY_PWRMGMT4, val); + udelay(10); + + tp->phy_addr = phy_addr; + } + if ((tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) && tp->pci_chip_rev_id != CHIPREV_ID_5750_A0 && GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785 && diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 40501cb3b359..530c36b23e80 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -1953,10 +1953,34 @@ #define NIC_SRAM_MBUF_POOL_BASE5705 0x00010000 #define NIC_SRAM_MBUF_POOL_SIZE5705 0x0000e000 + /* Currently this is fixed. */ +#define TG3_PHY_PCIE_ADDR 0x00 #define TG3_PHY_MII_ADDR 0x01 -/* Tigon3 specific PHY MII registers. */ + +/*** Tigon3 specific PHY PCIE registers. ***/ + +#define TG3_PCIEPHY_BLOCK_ADDR 0x1f +#define TG3_PCIEPHY_XGXS_BLK1 0x0801 +#define TG3_PCIEPHY_TXB_BLK 0x0861 +#define TG3_PCIEPHY_BLOCK_SHIFT 4 + +/* TG3_PCIEPHY_TXB_BLK */ +#define TG3_PCIEPHY_TX0CTRL1 0x15 +#define TG3_PCIEPHY_TX0CTRL1_TXOCM 0x0003 +#define TG3_PCIEPHY_TX0CTRL1_RDCTL 0x0008 +#define TG3_PCIEPHY_TX0CTRL1_TXCMV 0x0030 +#define TG3_PCIEPHY_TX0CTRL1_TKSEL 0x0040 +#define TG3_PCIEPHY_TX0CTRL1_NB_EN 0x0400 + +/* TG3_PCIEPHY_XGXS_BLK1 */ +#define TG3_PCIEPHY_PWRMGMT4 0x1a +#define TG3_PCIEPHY_PWRMGMT4_L1PLLPD_EN 0x0038 +#define TG3_PCIEPHY_PWRMGMT4_LOWPWR_EN 0x4000 + + +/*** Tigon3 specific PHY MII registers. ***/ #define TG3_BMCR_SPEED1000 0x0040 #define MII_TG3_CTRL 0x09 /* 1000-baseT control register */ |