diff options
| author | Emil Tantilov <emil.s.tantilov@intel.com> | 2013-08-17 03:11:14 +0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2013-08-29 14:36:55 +0400 |
| commit | 9a84fea2ecdcdcd61d6efce77cb1152cd500219e (patch) | |
| tree | 41a4ec4a9e3cdc7fc1c40b5b49ccc3c861989ac0 /drivers/net/ethernet/intel/ixgbe | |
| parent | 987e1d56b3157592d73f7f6170decada716fc415 (diff) | |
| download | linux-9a84fea2ecdcdcd61d6efce77cb1152cd500219e.tar.xz | |
ixgbe: add support for older QSFP active DA cables
This patch adds support for QSFP active direct attach (DA) cables which
pre-date SFF-8436 v3.6.
Signed-off-by: Emil Tantilov <emil.s.tantilov@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')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c | 55 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h | 5 |
2 files changed, 50 insertions, 10 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c index e89b34eae4db..e4c676006be9 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c @@ -1175,6 +1175,10 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw) u8 comp_codes_10g = 0; u8 oui_bytes[3] = {0, 0, 0}; u16 enforce_sfp = 0; + u8 connector = 0; + u8 cable_length = 0; + u8 device_tech = 0; + bool active_cable = false; if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber_qsfp) { hw->phy.sfp_type = ixgbe_sfp_type_not_present; @@ -1217,12 +1221,6 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw) hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core0; else hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core1; - } else if (comp_codes_10g & IXGBE_SFF_QSFP_DA_ACTIVE_CABLE) { - hw->phy.type = ixgbe_phy_qsfp_active_unknown; - if (hw->bus.lan_id == 0) - hw->phy.sfp_type = ixgbe_sfp_type_da_act_lmt_core0; - else - hw->phy.sfp_type = ixgbe_sfp_type_da_act_lmt_core1; } else if (comp_codes_10g & (IXGBE_SFF_10GBASESR_CAPABLE | IXGBE_SFF_10GBASELR_CAPABLE)) { if (hw->bus.lan_id == 0) @@ -1230,10 +1228,47 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw) else hw->phy.sfp_type = ixgbe_sfp_type_srlr_core1; } else { - /* unsupported module type */ - hw->phy.type = ixgbe_phy_sfp_unsupported; - status = IXGBE_ERR_SFP_NOT_SUPPORTED; - goto out; + if (comp_codes_10g & IXGBE_SFF_QSFP_DA_ACTIVE_CABLE) + active_cable = true; + + if (!active_cable) { + /* check for active DA cables that pre-date + * SFF-8436 v3.6 + */ + hw->phy.ops.read_i2c_eeprom(hw, + IXGBE_SFF_QSFP_CONNECTOR, + &connector); + + hw->phy.ops.read_i2c_eeprom(hw, + IXGBE_SFF_QSFP_CABLE_LENGTH, + &cable_length); + + hw->phy.ops.read_i2c_eeprom(hw, + IXGBE_SFF_QSFP_DEVICE_TECH, + &device_tech); + + if ((connector == + IXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE) && + (cable_length > 0) && + ((device_tech >> 4) == + IXGBE_SFF_QSFP_TRANSMITER_850NM_VCSEL)) + active_cable = true; + } + + if (active_cable) { + hw->phy.type = ixgbe_phy_qsfp_active_unknown; + if (hw->bus.lan_id == 0) + hw->phy.sfp_type = + ixgbe_sfp_type_da_act_lmt_core0; + else + hw->phy.sfp_type = + ixgbe_sfp_type_da_act_lmt_core1; + } else { + /* unsupported module type */ + hw->phy.type = ixgbe_phy_sfp_unsupported; + status = IXGBE_ERR_SFP_NOT_SUPPORTED; + goto out; + } } if (hw->phy.sfp_type != stored_sfp_type) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h index 138dadd7cf33..24af12e3719e 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h @@ -50,8 +50,11 @@ #define IXGBE_SFF_QSFP_VENDOR_OUI_BYTE0 0xA5 #define IXGBE_SFF_QSFP_VENDOR_OUI_BYTE1 0xA6 #define IXGBE_SFF_QSFP_VENDOR_OUI_BYTE2 0xA7 +#define IXGBE_SFF_QSFP_CONNECTOR 0x82 #define IXGBE_SFF_QSFP_10GBE_COMP 0x83 #define IXGBE_SFF_QSFP_1GBE_COMP 0x86 +#define IXGBE_SFF_QSFP_CABLE_LENGTH 0x92 +#define IXGBE_SFF_QSFP_DEVICE_TECH 0x93 /* Bitmasks */ #define IXGBE_SFF_DA_PASSIVE_CABLE 0x4 @@ -68,6 +71,8 @@ #define IXGBE_SFF_ADDRESSING_MODE 0x4 #define IXGBE_SFF_QSFP_DA_ACTIVE_CABLE 0x1 #define IXGBE_SFF_QSFP_DA_PASSIVE_CABLE 0x8 +#define IXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE 0x23 +#define IXGBE_SFF_QSFP_TRANSMITER_850NM_VCSEL 0x0 #define IXGBE_I2C_EEPROM_READ_MASK 0x100 #define IXGBE_I2C_EEPROM_STATUS_MASK 0x3 #define IXGBE_I2C_EEPROM_STATUS_NO_OPERATION 0x0 |