From adba9e23b4066f1d741a2076fc6ad18b6c0cea44 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 8 Nov 2005 10:33:40 -0800 Subject: [PATCH] [PATCH] skge: clear PCI PHY COMA mode on boot When skge is booted up, the PHY may be stuck in power down state by the previous OS. So we may need to turn it on. Signed-off-by: Stephen Hemminger Signed-off-by: Jeff Garzik --- drivers/net/skge.c | 10 ++++++++++ drivers/net/skge.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/drivers/net/skge.c b/drivers/net/skge.c index 572f121b1f4..fe806dbc191 100644 --- a/drivers/net/skge.c +++ b/drivers/net/skge.c @@ -2893,6 +2893,7 @@ static const char *skge_board_name(const struct skge_hw *hw) */ static int skge_reset(struct skge_hw *hw) { + u32 reg; u16 ctst; u8 t8, mac_cfg, pmd_type, phy_type; int i; @@ -2971,6 +2972,7 @@ static int skge_reset(struct skge_hw *hw) /* switch power to VCC (WA for VAUX problem) */ skge_write8(hw, B0_POWER_CTRL, PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON); + /* avoid boards with stuck Hardware error bits */ if ((skge_read32(hw, B0_ISRC) & IS_HW_ERR) && (skge_read32(hw, B0_HWE_ISRC) & IS_IRQ_SENSOR)) { @@ -2978,6 +2980,14 @@ static int skge_reset(struct skge_hw *hw) hw->intr_mask &= ~IS_HW_ERR; } + /* Clear PHY COMA */ + skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); + pci_read_config_dword(hw->pdev, PCI_DEV_REG1, ®); + reg &= ~PCI_PHY_COMA; + pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg); + skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); + + for (i = 0; i < hw->ports; i++) { skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET); skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR); diff --git a/drivers/net/skge.h b/drivers/net/skge.h index 72c175b87a5..ee123c15f54 100644 --- a/drivers/net/skge.h +++ b/drivers/net/skge.h @@ -6,6 +6,8 @@ /* PCI config registers */ #define PCI_DEV_REG1 0x40 +#define PCI_PHY_COMA 0x8000000 +#define PCI_VIO 0x2000000 #define PCI_DEV_REG2 0x44 #define PCI_REV_DESC 0x4 -- 2.32.0.93.g670b81a890