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Date: Wed, 28 Feb 2024 16:41:30 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
kuba@...nel.org,
pabeni@...hat.com,
edumazet@...gle.com,
netdev@...r.kernel.org
Cc: Ernesto Castellotti <ernesto@...tellotti.net>,
anthony.l.nguyen@...el.com,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
Sunitha Mekala <sunithax.d.mekala@...el.com>
Subject: [PATCH net-next 2/4] ixgbe: Add 1000BASE-BX support
From: Ernesto Castellotti <ernesto@...tellotti.net>
Added support for 1000BASE-BX, i.e. Gigabit Ethernet over single strand
of single-mode fiber.
The initialization of a 1000BASE-BX SFP is the same as 1000BASE-SX/LX
with the only difference that the Bit Rate Nominal Value must be
checked to make sure it is a Gigabit Ethernet transceiver, as described
by the SFF-8472 specification.
This was tested with the FS.com SFP-GE-BX 1310/1490nm 10km transceiver:
$ ethtool -m eth4
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x07 (LC)
Transceiver codes : 0x00 0x00 0x00 0x40 0x00 0x00 0x00 0x00 0x00
Transceiver type : Ethernet: BASE-BX10
Encoding : 0x01 (8B/10B)
BR, Nominal : 1300MBd
Rate identifier : 0x00 (unspecified)
Length (SMF,km) : 10km
Length (SMF) : 10000m
Length (50um) : 0m
Length (62.5um) : 0m
Length (Copper) : 0m
Length (OM3) : 0m
Laser wavelength : 1310nm
Vendor name : FS
Vendor OUI : 64:9d:99
Vendor PN : SFP-GE-BX
Vendor rev :
Option values : 0x20 0x0a
Option : RX_LOS implemented
Option : TX_FAULT implemented
Option : Power level 3 requirement
BR margin, max : 0%
BR margin, min : 0%
Vendor SN : S2202359108
Date code : 220307
Optical diagnostics support : Yes
Laser bias current : 17.650 mA
Laser output power : 0.2132 mW / -6.71 dBm
Receiver signal average optical power : 0.2740 mW / -5.62 dBm
Module temperature : 47.30 degrees C / 117.13 degrees F
Module voltage : 3.2576 V
Alarm/warning flags implemented : Yes
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Module voltage high warning : Off
Module voltage low warning : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Laser bias current high alarm threshold : 110.000 mA
Laser bias current low alarm threshold : 1.000 mA
Laser bias current high warning threshold : 100.000 mA
Laser bias current low warning threshold : 1.000 mA
Laser output power high alarm threshold : 0.7079 mW / -1.50 dBm
Laser output power low alarm threshold : 0.0891 mW / -10.50 dBm
Laser output power high warning threshold : 0.6310 mW / -2.00 dBm
Laser output power low warning threshold : 0.1000 mW / -10.00 dBm
Module temperature high alarm threshold : 90.00 degrees C / 194.00 degrees F
Module temperature low alarm threshold : -45.00 degrees C / -49.00 degrees F
Module temperature high warning threshold : 85.00 degrees C / 185.00 degrees F
Module temperature low warning threshold : -40.00 degrees C / -40.00 degrees F
Module voltage high alarm threshold : 3.7950 V
Module voltage low alarm threshold : 2.8050 V
Module voltage high warning threshold : 3.4650 V
Module voltage low warning threshold : 3.1350 V
Laser rx power high alarm threshold : 0.7079 mW / -1.50 dBm
Laser rx power low alarm threshold : 0.0028 mW / -25.53 dBm
Laser rx power high warning threshold : 0.6310 mW / -2.00 dBm
Laser rx power low warning threshold : 0.0032 mW / -24.95 dBm
Signed-off-by: Ernesto Castellotti <ernesto@...tellotti.net>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c | 32 +++++++++++++++++---
1 file changed, 28 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index 75e9453331ed..07eaa3c3f4d3 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -1532,6 +1532,7 @@ int ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
struct ixgbe_adapter *adapter = hw->back;
u8 oui_bytes[3] = {0, 0, 0};
+ u8 bitrate_nominal = 0;
u8 comp_codes_10g = 0;
u8 comp_codes_1g = 0;
u16 enforce_sfp = 0;
@@ -1576,7 +1577,12 @@ int ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
status = hw->phy.ops.read_i2c_eeprom(hw,
IXGBE_SFF_CABLE_TECHNOLOGY,
&cable_tech);
+ if (status)
+ goto err_read_i2c_eeprom;
+ status = hw->phy.ops.read_i2c_eeprom(hw,
+ IXGBE_SFF_BITRATE_NOMINAL,
+ &bitrate_nominal);
if (status)
goto err_read_i2c_eeprom;
@@ -1659,6 +1665,18 @@ int ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
else
hw->phy.sfp_type =
ixgbe_sfp_type_1g_lx_core1;
+ /* Support only Ethernet 1000BASE-BX10, checking the Bit Rate
+ * Nominal Value as per SFF-8472 by convention 1.25 Gb/s should
+ * be rounded up to 0Dh (13 in units of 100 MBd) for 1000BASE-BX
+ */
+ } else if ((comp_codes_1g & IXGBE_SFF_BASEBX10_CAPABLE) &&
+ (bitrate_nominal == 0xD)) {
+ if (hw->bus.lan_id == 0)
+ hw->phy.sfp_type =
+ ixgbe_sfp_type_1g_bx_core0;
+ else
+ hw->phy.sfp_type =
+ ixgbe_sfp_type_1g_bx_core1;
} else {
hw->phy.sfp_type = ixgbe_sfp_type_unknown;
}
@@ -1747,7 +1765,9 @@ int ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
- hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1)) {
+ hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1 ||
+ hw->phy.sfp_type == ixgbe_sfp_type_1g_bx_core0 ||
+ hw->phy.sfp_type == ixgbe_sfp_type_1g_bx_core1)) {
hw->phy.type = ixgbe_phy_sfp_unsupported;
return -EOPNOTSUPP;
}
@@ -1763,7 +1783,9 @@ int ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
- hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1)) {
+ hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1 ||
+ hw->phy.sfp_type == ixgbe_sfp_type_1g_bx_core0 ||
+ hw->phy.sfp_type == ixgbe_sfp_type_1g_bx_core1)) {
/* Make sure we're a supported PHY type */
if (hw->phy.type == ixgbe_phy_sfp_intel)
return 0;
@@ -1999,12 +2021,14 @@ int ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
if (sfp_type == ixgbe_sfp_type_da_act_lmt_core0 ||
sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
- sfp_type == ixgbe_sfp_type_1g_sx_core0)
+ sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
+ sfp_type == ixgbe_sfp_type_1g_bx_core0)
sfp_type = ixgbe_sfp_type_srlr_core0;
else if (sfp_type == ixgbe_sfp_type_da_act_lmt_core1 ||
sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
- sfp_type == ixgbe_sfp_type_1g_sx_core1)
+ sfp_type == ixgbe_sfp_type_1g_sx_core1 ||
+ sfp_type == ixgbe_sfp_type_1g_bx_core1)
sfp_type = ixgbe_sfp_type_srlr_core1;
/* Read offset to PHY init contents */
--
2.41.0
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