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| author |   Mark Rustad <mark.d.rustad@intel.com> | 2015-08-08 16:18:22 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-09-23 22:27:18 -0700 |
| commit | 56f6ed1ce13b0cb85ae9537f839df7c4ba1f5369 (patch) | |
| tree | f87cefd29192e9527b45353d119c6f6cf0da4877 /drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c | |
| parent | ixgbe: Clear I2C destination location (diff) | |
| download | linux-dev-56f6ed1ce13b0cb85ae9537f839df7c4ba1f5369.tar.xz linux-dev-56f6ed1ce13b0cb85ae9537f839df7c4ba1f5369.zip | |
ixgbe: Allow reduced delays during SFP detection
Reduce the number of retries during PHY detection. This reduces
pauses when no SFP is present. Once an SFP is detected, the normal
retry count will be used.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c index 88ade175185a..7a7ee9d84ac8 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c @@ -1731,6 +1731,21 @@ s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, } /** + * ixgbe_is_sfp_probe - Returns true if SFP is being detected + * @hw: pointer to hardware structure + * @offset: eeprom offset to be read + * @addr: I2C address to be read + */ +static bool ixgbe_is_sfp_probe(struct ixgbe_hw *hw, u8 offset, u8 addr) +{ + if (addr == IXGBE_I2C_EEPROM_DEV_ADDR && + offset == IXGBE_SFF_IDENTIFIER && + hw->phy.sfp_type == ixgbe_sfp_type_not_present) + return true; + return false; +} + +/** * ixgbe_read_i2c_byte_generic_int - Reads 8 bit word over I2C * @hw: pointer to hardware structure * @byte_offset: byte offset to read @@ -1749,6 +1764,9 @@ static s32 ixgbe_read_i2c_byte_generic_int(struct ixgbe_hw *hw, u8 byte_offset, u32 swfw_mask = hw->phy.phy_semaphore_mask; bool nack = true; + if (ixgbe_is_sfp_probe(hw, byte_offset, dev_addr)) + max_retry = IXGBE_SFP_DETECT_RETRIES; + *data = 0; do { |