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ixgbe: Change Direct Attach Twinax cable detection for SFP+ NICs 

The SFF specification for Direct Attach cable detection has now been
ratified.  Previously, DA cable detect was looking at the Twinaxial bit in
byte 9 of the SFP+ EEPROM.  The spec now defines active and passive DA
cables in byte 8 of the SFP+ EEPROM.  This patch changes the cable
detection for both 82598 and 82599 SFP+ adapters to conform to the new
spec.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter P Waskiewicz Jr 2009-05-19 09:18:51 +00:00 committed by David S. Miller
parent aa5aec8885
commit 537d58a00a
2 changed files with 11 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/net/ixgbe/ixgbe_phy.c
View File

@ -527,7 +527,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
u8 comp_codes_1g = 0;
u8 comp_codes_10g = 0;
u8 oui_bytes[3] = {0, 0, 0};
u8 transmission_media = 0;
u8 cable_tech = 0;
u16 enforce_sfp = 0;
status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER,
@ -543,8 +543,8 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
&comp_codes_1g);
hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_10GBE_COMP_CODES,
&comp_codes_10g);
hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_TRANSMISSION_MEDIA,
&transmission_media);
hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_CABLE_TECHNOLOGY,
&cable_tech);
/* ID Module
* =========
@ -557,7 +557,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
* 6 SFP_SR/LR_CORE1 - 82599-specific
*/
if (hw->mac.type == ixgbe_mac_82598EB) {
if (transmission_media & IXGBE_SFF_TWIN_AX_CAPABLE)
if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
hw->phy.sfp_type = ixgbe_sfp_type_da_cu;
else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
hw->phy.sfp_type = ixgbe_sfp_type_sr;
@ -566,7 +566,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
else
hw->phy.sfp_type = ixgbe_sfp_type_unknown;
} else if (hw->mac.type == ixgbe_mac_82599EB) {
if (transmission_media & IXGBE_SFF_TWIN_AX_CAPABLE)
if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
if (hw->bus.lan_id == 0)
hw->phy.sfp_type =
ixgbe_sfp_type_da_cu_core0;
@ -621,8 +621,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
switch (vendor_oui) {
case IXGBE_SFF_VENDOR_OUI_TYCO:
if (transmission_media &
IXGBE_SFF_TWIN_AX_CAPABLE)
if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
hw->phy.type = ixgbe_phy_tw_tyco;
break;
case IXGBE_SFF_VENDOR_OUI_FTL:
@ -635,8 +634,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
hw->phy.type = ixgbe_phy_sfp_intel;
break;
default:
if (transmission_media &
IXGBE_SFF_TWIN_AX_CAPABLE)
if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
hw->phy.type = ixgbe_phy_tw_unknown;
else
hw->phy.type = ixgbe_phy_sfp_unknown;
@ -644,8 +642,8 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
}
}
/* All DA cables are supported */
if (transmission_media & IXGBE_SFF_TWIN_AX_CAPABLE) {
/* All passive DA cables are supported */
if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) {
status = 0;
goto out;
}

4
drivers/net/ixgbe/ixgbe_phy.h
View File

@ -39,10 +39,10 @@
#define IXGBE_SFF_VENDOR_OUI_BYTE2 0x27
#define IXGBE_SFF_1GBE_COMP_CODES 0x6
#define IXGBE_SFF_10GBE_COMP_CODES 0x3
#define IXGBE_SFF_TRANSMISSION_MEDIA 0x9
#define IXGBE_SFF_CABLE_TECHNOLOGY 0x8
/* Bitmasks */
#define IXGBE_SFF_TWIN_AX_CAPABLE 0x80
#define IXGBE_SFF_DA_PASSIVE_CABLE 0x4
#define IXGBE_SFF_1GBASESX_CAPABLE 0x1
#define IXGBE_SFF_1GBASELX_CAPABLE 0x2
#define IXGBE_SFF_10GBASESR_CAPABLE 0x10