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185f812c41
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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
437 lines
14 KiB
C
437 lines
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 Marvell International Ltd.
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*
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* Helper functions to abstract SFP and QSFP connectors
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*/
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#ifndef __CVMX_HELPER_SFP_H__
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#define __CVMX_HELPER_SFP_H__
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/**
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* Maximum size for the SFP EEPROM. Currently only 96 bytes are used.
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*/
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#define CVMX_SFP_MAX_EEPROM_SIZE 0x100
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/**
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* Default address of sfp EEPROM
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*/
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#define CVMX_SFP_DEFAULT_I2C_ADDR 0x50
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/**
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* Default address of SFP diagnostics chip
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*/
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#define CVMX_SFP_DEFAULT_DIAG_I2C_ADDR 0x51
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struct cvmx_fdt_sfp_info;
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struct cvmx_fdt_gpio_info;
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/**
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* Connector type for module, usually we only see SFP and QSFPP
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*/
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enum cvmx_phy_sfp_conn_type {
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CVMX_SFP_CONN_GBIC = 0x01, /** GBIC */
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CVMX_SFP_CONN_SFP = 0x03, /** SFP/SFP+/SFP28 */
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CVMX_SFP_CONN_QSFP = 0x0C, /** 1G QSFP (obsolete) */
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CVMX_SFP_CONN_QSFPP = 0x0D, /** QSFP+ or later */
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CVMX_SFP_CONN_QSFP28 = 0x11, /** QSFP28 (100Gbps) */
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CVMX_SFP_CONN_MICRO_QSFP = 0x17, /** Micro QSFP */
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CVMX_SFP_CONN_QSFP_DD = 0x18, /** QSFP-DD Double Density 8X */
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CVMX_SFP_CONN_SFP_DD = 0x1A, /** SFP-DD Double Density 2X */
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};
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/**
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* module type plugged into a SFP/SFP+/QSFP+ port
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*/
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enum cvmx_phy_sfp_mod_type {
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CVMX_SFP_MOD_UNKNOWN = 0, /** Unknown or unspecified */
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/** Fiber optic module (LC connector) */
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CVMX_SFP_MOD_OPTICAL_LC = 0x7,
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/** Multiple optical */
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CVMX_SFP_MOD_MULTIPLE_OPTICAL = 0x9,
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/** Fiber optic module (pigtail, no connector) */
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CVMX_SFP_MOD_OPTICAL_PIGTAIL = 0xB,
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CVMX_SFP_MOD_COPPER_PIGTAIL = 0x21, /** copper module */
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CVMX_SFP_MOD_RJ45 = 0x22, /** RJ45 (i.e. 10GBase-T) */
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/** No separable connector (SFP28/copper) */
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CVMX_SFP_MOD_NO_SEP_CONN = 0x23,
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/** MXC 2X16 */
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CVMX_SFP_MOD_MXC_2X16 = 0x24,
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/** CS optical connector */
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CVMX_SFP_MOD_CS_OPTICAL = 0x25,
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/** Mini CS optical connector */
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CVMX_SFP_MOD_MINI_CS_OPTICAL = 0x26,
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/** Unknown/other module type */
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CVMX_SFP_MOD_OTHER
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};
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/** Peak rate supported by SFP cable */
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enum cvmx_phy_sfp_rate {
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CVMX_SFP_RATE_UNKNOWN, /** Unknown rate */
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CVMX_SFP_RATE_1G, /** 1Gbps */
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CVMX_SFP_RATE_10G, /** 10Gbps */
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CVMX_SFP_RATE_25G, /** 25Gbps */
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CVMX_SFP_RATE_40G, /** 40Gbps */
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CVMX_SFP_RATE_100G /** 100Gbps */
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};
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/**
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* Cable compliance specification
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* See table 4-4 from SFF-8024 for the extended specification compliance codes
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*/
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enum cvmx_phy_sfp_cable_ext_compliance {
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CVMX_SFP_CABLE_UNSPEC = 0,
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CVMX_SFP_CABLE_100G_25GAUI_C2M_AOC_HIGH_BER = 0x01, /** Active optical cable */
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CVMX_SFP_CABLE_100G_SR4_25G_SR = 0x2,
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CVMX_SFP_CABLE_100G_LR4_25G_LR = 0x3,
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CVMX_SFP_CABLE_100G_ER4_25G_ER = 0x4,
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CVMX_SFP_CABLE_100G_SR10 = 0x5,
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CVMX_SFP_CABLE_100G_CWDM4_MSA = 0x6,
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CVMX_SFP_CABLE_100G_PSM4 = 0x7,
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CVMX_SFP_CABLE_100G_25GAUI_C2M_ACC_HIGH_BER = 0x8,
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CVMX_SFP_CABLE_100G_CWDM4 = 0x9,
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CVMX_SFP_CABLE_100G_CR4_25G_CR_CA_L = 0xB,
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CVMX_SFP_CABLE_25G_CR_CA_S = 0xC,
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CVMX_SFP_CABLE_25G_CR_CA_N = 0xD,
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CVMX_SFP_CABLE_40G_ER4 = 0x10,
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CVMX_SFP_CABLE_4X10G_SR = 0x11,
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CVMX_SFP_CABLE_40G_PSM4 = 0x12,
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CVMX_SFP_CABLE_G959_1_P1I1_2D1 = 0x13,
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CVMX_SFP_CABLE_G959_1_P1S1_2D2 = 0x14,
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CVMX_SFP_CABLE_G959_1_P1L1_2D2 = 0x15,
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CVMX_SFP_CABLE_10GBASE_T = 0x16,
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CVMX_SFP_CABLE_100G_CLR4 = 0x17,
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CVMX_SFP_CABLE_100G_25GAUI_C2M_AOC_LOW_BER = 0x18,
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CVMX_SFP_CABLE_100G_25GAUI_C2M_ACC_LOW_BER = 0x19,
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CVMX_SFP_CABLE_100G_2_LAMBDA_DWDM = 0x1a,
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CVMX_SFP_CABLE_100G_1550NM_WDM = 0x1b,
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CVMX_SFP_CABLE_10GBASE_T_SR = 0x1c,
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CVMX_SFP_CABLE_5GBASE_T = 0x1d,
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CVMX_SFP_CABLE_2_5GBASE_T = 0x1e,
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CVMX_SFP_CABLE_40G_SWDM4 = 0x1f,
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CVMX_SFP_CABLE_100G_SWDM4 = 0x20,
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CVMX_SFP_CABLE_100G_PAM4_BIDI = 0x21,
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CVMX_SFP_CABLE_100G_4WDM_10_FEC_HOST = 0x22,
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CVMX_SFP_CABLE_100G_4WDM_20_FEC_HOST = 0x23,
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CVMX_SFP_CABLE_100G_4WDM_40_FEC_HOST = 0x24,
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CVMX_SFP_CABLE_100GBASE_DR_CAUI4_NO_FEC = 0x25,
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CVMX_SFP_CABLE_100G_FR_CAUI4_NO_FEC = 0x26,
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CVMX_SFP_CABLE_100G_LR_CAUI4_NO_FEC = 0x27,
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CVMX_SFP_CABLE_ACTIVE_COPPER_50_100_200GAUI_LOW_BER = 0x30,
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CVMX_SFP_CABLE_ACTIVE_OPTICAL_50_100_200GAUI_LOW_BER = 0x31,
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CVMX_SFP_CABLE_ACTIVE_COPPER_50_100_200GAUI_HI_BER = 0x32,
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CVMX_SFP_CABLE_ACTIVE_OPTICAL_50_100_200GAUI_HI_BER = 0x33,
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CVMX_SFP_CABLE_50_100_200G_CR = 0x40,
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CVMX_SFP_CABLE_50_100_200G_SR = 0x41,
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CVMX_SFP_CABLE_50GBASE_FR_200GBASE_DR4 = 0x42,
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CVMX_SFP_CABLE_200GBASE_FR4 = 0x43,
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CVMX_SFP_CABLE_200G_1550NM_PSM4 = 0x44,
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CVMX_SFP_CABLE_50GBASE_LR = 0x45,
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CVMX_SFP_CABLE_200GBASE_LR4 = 0x46,
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CVMX_SFP_CABLE_64GFC_EA = 0x50,
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CVMX_SFP_CABLE_64GFC_SW = 0x51,
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CVMX_SFP_CABLE_64GFC_LW = 0x52,
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CVMX_SFP_CABLE_128GFC_EA = 0x53,
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CVMX_SFP_CABLE_128GFC_SW = 0x54,
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CVMX_SFP_CABLE_128GFC_LW = 0x55,
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};
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/** Optical modes module is compliant with */
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enum cvmx_phy_sfp_10g_eth_compliance {
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CVMX_SFP_CABLE_10GBASE_ER = 0x80, /** 10G ER */
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CVMX_SFP_CABLE_10GBASE_LRM = 0x40, /** 10G LRM */
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CVMX_SFP_CABLE_10GBASE_LR = 0x20, /** 10G LR */
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CVMX_SFP_CABLE_10GBASE_SR = 0x10 /** 10G SR */
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};
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/** Diagnostic ASIC compatibility */
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enum cvmx_phy_sfp_sff_8472_diag_rev {
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CVMX_SFP_SFF_8472_NO_DIAG = 0x00,
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CVMX_SFP_SFF_8472_REV_9_3 = 0x01,
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CVMX_SFP_SFF_8472_REV_9_5 = 0x02,
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CVMX_SFP_SFF_8472_REV_10_2 = 0x03,
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CVMX_SFP_SFF_8472_REV_10_4 = 0x04,
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CVMX_SFP_SFF_8472_REV_11_0 = 0x05,
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CVMX_SFP_SFF_8472_REV_11_3 = 0x06,
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CVMX_SFP_SFF_8472_REV_11_4 = 0x07,
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CVMX_SFP_SFF_8472_REV_12_0 = 0x08,
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CVMX_SFP_SFF_8472_REV_UNALLOCATED = 0xff
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};
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/**
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* Data structure describing the current SFP or QSFP EEPROM
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*/
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struct cvmx_sfp_mod_info {
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enum cvmx_phy_sfp_conn_type conn_type; /** Connector type */
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enum cvmx_phy_sfp_mod_type mod_type; /** Module type */
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enum cvmx_phy_sfp_rate rate; /** Rate of module */
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/** 10G Ethernet Compliance codes (logical OR) */
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enum cvmx_phy_sfp_10g_eth_compliance eth_comp;
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/** Extended Cable compliance */
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enum cvmx_phy_sfp_cable_ext_compliance cable_comp;
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u8 vendor_name[17]; /** Module vendor name */
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u8 vendor_oui[3]; /** vendor OUI */
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u8 vendor_pn[17]; /** Vendor part number */
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u8 vendor_rev[5]; /** Vendor revision */
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u8 vendor_sn[17]; /** Vendor serial number */
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u8 date_code[9]; /** Date code */
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bool valid; /** True if module is valid */
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bool active_cable; /** False for passive copper */
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bool copper_cable; /** True if cable is copper */
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/** True if module is limiting (i.e. not passive copper) */
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bool limiting;
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/** Maximum length of copper cable in meters */
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int max_copper_cable_len;
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/** Max single mode cable length in meters */
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int max_single_mode_cable_length;
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/** Max 50um OM2 cable length */
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int max_50um_om2_cable_length;
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/** Max 62.5um OM1 cable length */
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int max_62_5um_om1_cable_length;
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/** Max 50um OM4 cable length */
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int max_50um_om4_cable_length;
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/** Max 50um OM3 cable length */
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int max_50um_om3_cable_length;
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/** Minimum bitrate in Mbps */
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int bitrate_min;
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/** Maximum bitrate in Mbps */
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int bitrate_max;
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/**
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* Set to true if forward error correction is required,
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* for example, a 25GBase-CR CA-S cable.
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*
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* FEC should only be disabled at 25G with CA-N cables. FEC is required
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* with 5M and longer cables.
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*/
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bool fec_required;
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/** True if RX output is linear */
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bool linear_rx_output;
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/** Power level, can be 1, 2 or 3 */
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int power_level;
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/** False if conventional cooling is used, true for active cooling */
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bool cooled_laser;
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/** True if internal retimer or clock and data recovery circuit */
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bool internal_cdr;
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/** True if LoS is implemented */
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bool los_implemented;
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/** True if LoS is inverted from the standard */
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bool los_inverted;
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/** True if TX_FAULT is implemented */
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bool tx_fault_implemented;
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/** True if TX_DISABLE is implemented */
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bool tx_disable_implemented;
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/** True if RATE_SELECT is implemented */
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bool rate_select_implemented;
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/** True if tuneable transmitter technology is used */
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bool tuneable_transmitter;
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/** True if receiver decision threshold is implemented */
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bool rx_decision_threshold_implemented;
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/** True if diagnostic monitoring present */
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bool diag_monitoring;
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/** True if diagnostic address 0x7f is used for selecting the page */
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bool diag_paging;
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/** Diagnostic feature revision */
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enum cvmx_phy_sfp_sff_8472_diag_rev diag_rev;
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/** True if an address change sequence is required for diagnostics */
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bool diag_addr_change_required;
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/** True if RX power is averaged, false if OMA */
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bool diag_rx_power_averaged;
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/** True if diagnostics are externally calibrated */
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bool diag_externally_calibrated;
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/** True if diagnostics are internally calibrated */
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bool diag_internally_calibrated;
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/** True of soft rate select control implemented per SFF-8431 */
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bool diag_soft_rate_select_control;
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/** True if application select control implemented per SFF-8079 */
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bool diag_app_select_control;
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/** True if soft RATE_SELECT control and moonitoring implemented */
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bool diag_soft_rate_select_implemented;
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/** True if soft RX_LOS monitoring implemented */
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bool diag_soft_rx_los_implemented;
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/** True if soft TX_FAULT monitoring implemented */
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bool diag_soft_tx_fault_implemented;
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/** True if soft TX_DISABLE control and monitoring implemented */
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bool diag_soft_tx_disable_implemented;
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/** True if alarm/warning flags implemented */
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bool diag_alarm_warning_flags_implemented;
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};
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/**
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* Reads the SFP EEPROM using the i2c bus
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*
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* @param[out] buffer Buffer to store SFP EEPROM data in
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* The buffer should be SFP_MAX_EEPROM_SIZE bytes.
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* @param i2c_bus i2c bus number to read from for SFP port
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* @param i2c_addr i2c address to use, 0 for default
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*
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* Return: -1 if invalid bus or i2c read error, 0 for success
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*/
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int cvmx_phy_sfp_read_i2c_eeprom(u8 *buffer, int i2c_bus, int i2c_addr);
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/**
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* Reads the SFP/SFP+/QSFP EEPROM and outputs the type of module or cable
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* plugged in
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*
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* @param[out] sfp_info Info about SFP module
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* @param[in] buffer SFP EEPROM buffer to parse
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*
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* Return: 0 on success, -1 if error reading EEPROM or if EEPROM corrupt
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*/
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int cvmx_phy_sfp_parse_eeprom(struct cvmx_sfp_mod_info *sfp_info, const u8 *buffer);
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/**
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* Prints out information about a SFP/QSFP device
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*
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* @param[in] sfp_info data structure to print
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*/
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void cvmx_phy_sfp_print_info(const struct cvmx_sfp_mod_info *sfp_info);
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/**
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* Reads and parses SFP/QSFP EEPROM
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*
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* @param sfp sfp handle to read
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*
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* Return: 0 for success, -1 on error.
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*/
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int cvmx_sfp_read_i2c_eeprom(struct cvmx_fdt_sfp_info *sfp);
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/**
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* Returns the information about a SFP/QSFP device
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*
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* @param sfp sfp handle
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*
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* Return: sfp_info Pointer sfp mod info data structure
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*/
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const struct cvmx_sfp_mod_info *cvmx_phy_get_sfp_mod_info(const struct cvmx_fdt_sfp_info *sfp);
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/**
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* Function called to check and return the status of the mod_abs pin or
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* mod_pres pin for QSFPs.
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*
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* @param sfp Handle to SFP information.
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* @param data User-defined data passed to the function
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*
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* Return: 0 if absent, 1 if present, -1 on error
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*/
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int cvmx_sfp_check_mod_abs(struct cvmx_fdt_sfp_info *sfp, void *data);
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/**
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* Registers a function to be called to check mod_abs/mod_pres for a SFP/QSFP
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* slot.
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*
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* @param sfp Handle to SFP data structure
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* @param check_mod_abs Function to be called or NULL to remove
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* @param mod_abs_data User-defined data to be passed to check_mod_abs
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*
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* Return: 0 for success
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*/
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int cvmx_sfp_register_check_mod_abs(struct cvmx_fdt_sfp_info *sfp,
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int (*check_mod_abs)(struct cvmx_fdt_sfp_info *sfp, void *data),
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void *mod_abs_data);
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/**
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* Registers a function to be called whenever the mod_abs/mod_pres signal
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* changes.
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*
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* @param sfp Handle to SFP data structure
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* @param mod_abs_changed Function called whenever mod_abs is changed
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* or NULL to remove.
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* @param mod_abs_changed_data User-defined data passed to
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* mod_abs_changed
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*
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* Return: 0 for success
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*/
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int cvmx_sfp_register_mod_abs_changed(struct cvmx_fdt_sfp_info *sfp,
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int (*mod_abs_changed)(struct cvmx_fdt_sfp_info *sfp, int val,
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void *data),
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void *mod_abs_changed_data);
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/**
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* Function called to check and return the status of the tx_fault pin
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*
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* @param sfp Handle to SFP information.
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* @param data User-defined data passed to the function
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*
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* Return: 0 if signal present, 1 if signal absent, -1 on error
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*/
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int cvmx_sfp_check_tx_fault(struct cvmx_fdt_sfp_info *sfp, void *data);
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/**
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* Function called to check and return the status of the rx_los pin
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*
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* @param sfp Handle to SFP information.
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* @param data User-defined data passed to the function
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*
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* Return: 0 if signal present, 1 if signal absent, -1 on error
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*/
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int cvmx_sfp_check_rx_los(struct cvmx_fdt_sfp_info *sfp, void *data);
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/**
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* Registers a function to be called whenever rx_los changes
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*
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* @param sfp Handle to SFP data structure
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* @param rx_los_changed Function to be called when rx_los changes
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* or NULL to remove the function
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* @param rx_los_changed_data User-defined data passed to
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* rx_los_changed
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*
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* Return: 0 for success
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*/
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int cvmx_sfp_register_rx_los_changed(struct cvmx_fdt_sfp_info *sfp,
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int (*rx_los_changed)(struct cvmx_fdt_sfp_info *sfp, int val,
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void *data),
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void *rx_los_changed_data);
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/**
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* Parses the device tree for SFP and QSFP slots
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*
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* @param fdt_addr Address of flat device-tree
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*
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* Return: 0 for success, -1 on error
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*/
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int cvmx_sfp_parse_device_tree(const void *fdt_addr);
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/**
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* Given an IPD port number find the corresponding SFP or QSFP slot
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*
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* @param ipd_port IPD port number to search for
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*
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* Return: pointer to SFP data structure or NULL if not found
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*/
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struct cvmx_fdt_sfp_info *cvmx_sfp_find_slot_by_port(int ipd_port);
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/**
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* Given a fdt node offset find the corresponding SFP or QSFP slot
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*
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* @param of_offset flat device tree node offset
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*
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* Return: pointer to SFP data structure or NULL if not found
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*/
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struct cvmx_fdt_sfp_info *cvmx_sfp_find_slot_by_fdt_node(int of_offset);
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/**
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* Reads the EEPROMs of all SFP modules.
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*
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* Return: 0 for success
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*/
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int cvmx_sfp_read_all_modules(void);
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/**
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* Validates if the module is correct for the specified port
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*
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* @param[in] sfp SFP port to check
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* @param mode interface mode
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*
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* Return: true if module is valid, false if invalid
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* NOTE: This will also toggle the error LED, if present
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*/
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bool cvmx_sfp_validate_module(struct cvmx_fdt_sfp_info *sfp, int mode);
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/**
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* Prints information about the SFP module
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*
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* @param[in] sfp sfp data structure
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*/
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void cvmx_sfp_print_info(const struct cvmx_fdt_sfp_info *sfp);
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#endif /* __CVMX_HELPER_SFP_H__ */
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