From 8ca783ab78e3fa518885c4fef93d0972e450a4de Mon Sep 17 00:00:00 2001 From: Don Skidmore Date: Tue, 26 May 2009 20:40:47 -0700 Subject: [PATCH] ixgbe: fix 82598 SFP initialization after driver load. If we loaded the driver with out a SFP module plugged in it would leave it in a state that make it later unable to link when a module was plugged in. This patch corrects that by: ixgbe_probe() - moving the check for IXGBE_ERR_SFP_NOT_PRESENT from after get_invariants() to after reset_hw() as now reset_hw() is where this condition will be indentified. ixgbe_reset_hw_82598() - Enable this function to now return IXGBE_ERR_SFP_NOT_PRESENT. ixgbe_identify_sfp_module_generic() - This where the lack of SFP module is detected. Modifications are added to allow a different return value for modules that just haven't been plugged in yet. Other functions were updated to allow correct logging. Signed-off-by: Don Skidmore Signed-off-by: Peter P Waskiewicz Jr Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ixgbe/ixgbe_82598.c | 12 ++++++++++-- drivers/net/ixgbe/ixgbe_main.c | 33 +++++++++++++++++---------------- drivers/net/ixgbe/ixgbe_phy.c | 13 ++++++++++++- 3 files changed, 39 insertions(+), 19 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c index afc9fe3f1eda..88e8350aa786 100644 --- a/drivers/net/ixgbe/ixgbe_82598.c +++ b/drivers/net/ixgbe/ixgbe_82598.c @@ -698,6 +698,7 @@ static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw, static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw) { s32 status = 0; + s32 phy_status = 0; u32 ctrl; u32 gheccr; u32 i; @@ -745,13 +746,17 @@ static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw) /* PHY ops must be identified and initialized prior to reset */ /* Init PHY and function pointers, perform SFP setup */ - status = hw->phy.ops.init(hw); - if (status == IXGBE_ERR_SFP_NOT_SUPPORTED) + phy_status = hw->phy.ops.init(hw); + if (phy_status == IXGBE_ERR_SFP_NOT_SUPPORTED) goto reset_hw_out; + else if (phy_status == IXGBE_ERR_SFP_NOT_PRESENT) + goto no_phy_reset; + hw->phy.ops.reset(hw); } +no_phy_reset: /* * Prevent the PCI-E bus from from hanging by disabling PCI-E master * access and verify no pending requests before reset @@ -811,6 +816,9 @@ static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw) hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr); reset_hw_out: + if (phy_status) + status = phy_status; + return status; } diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index e52798c4816b..f9223acae30b 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2599,7 +2599,10 @@ int ixgbe_up(struct ixgbe_adapter *adapter) void ixgbe_reset(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; - if (hw->mac.ops.init_hw(hw)) + int err; + + err = hw->mac.ops.init_hw(hw); + if (err && (err != IXGBE_ERR_SFP_NOT_PRESENT)) dev_err(&adapter->pdev->dev, "Hardware Error\n"); /* reprogram the RAR[0] in case user changed it. */ @@ -5167,20 +5170,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, INIT_WORK(&adapter->sfp_config_module_task, ixgbe_sfp_config_module_task); - err = ii->get_invariants(hw); - if (err == IXGBE_ERR_SFP_NOT_PRESENT) { - /* start a kernel thread to watch for a module to arrive */ - set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); - mod_timer(&adapter->sfp_timer, - round_jiffies(jiffies + (2 * HZ))); - err = 0; - } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { - DPRINTK(PROBE, ERR, "failed to load because an " - "unsupported SFP+ module type was detected.\n"); - goto err_hw_init; - } else if (err) { - goto err_hw_init; - } + ii->get_invariants(hw); /* setup the private structure */ err = ixgbe_sw_init(adapter); @@ -5200,7 +5190,18 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, /* reset_hw fills in the perm_addr as well */ err = hw->mac.ops.reset_hw(hw); - if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { + if (err == IXGBE_ERR_SFP_NOT_PRESENT && + hw->mac.type == ixgbe_mac_82598EB) { + /* + * Start a kernel thread to watch for a module to arrive. + * Only do this for 82598, since 82599 will generate + * interrupts on module arrival. + */ + set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); + mod_timer(&adapter->sfp_timer, + round_jiffies(jiffies + (2 * HZ))); + err = 0; + } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { dev_err(&adapter->pdev->dev, "failed to load because an " "unsupported SFP+ module type was detected.\n"); goto err_sw_init; diff --git a/drivers/net/ixgbe/ixgbe_phy.c b/drivers/net/ixgbe/ixgbe_phy.c index 8210b49aeff4..e43d6248d7d4 100644 --- a/drivers/net/ixgbe/ixgbe_phy.c +++ b/drivers/net/ixgbe/ixgbe_phy.c @@ -530,11 +530,22 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw) u8 cable_tech = 0; u16 enforce_sfp = 0; + if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber) { + hw->phy.sfp_type = ixgbe_sfp_type_not_present; + status = IXGBE_ERR_SFP_NOT_PRESENT; + goto out; + } + status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER, &identifier); - if (status == IXGBE_ERR_SFP_NOT_PRESENT) { + if (status == IXGBE_ERR_SFP_NOT_PRESENT || status == IXGBE_ERR_I2C) { + status = IXGBE_ERR_SFP_NOT_PRESENT; hw->phy.sfp_type = ixgbe_sfp_type_not_present; + if (hw->phy.type != ixgbe_phy_nl) { + hw->phy.id = 0; + hw->phy.type = ixgbe_phy_unknown; + } goto out; } -- 2.20.1