1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ 2 /* 3 * Copyright(c) 2015, 2016 Intel Corporation. 4 */ 5 /* QSFP support common definitions, for hfi driver */ 6 7 #define QSFP_DEV 0xA0 8 #define QSFP_PWR_LAG_MSEC 2000 9 #define QSFP_MODPRS_LAG_MSEC 20 10 /* 128 byte pages, per SFF 8636 rev 2.4 */ 11 #define QSFP_MAX_NUM_PAGES 5 12 13 /* 14 * Below are masks for QSFP pins. Pins are the same for HFI0 and HFI1. 15 * _N means asserted low 16 */ 17 #define QSFP_HFI0_I2CCLK BIT(0) 18 #define QSFP_HFI0_I2CDAT BIT(1) 19 #define QSFP_HFI0_RESET_N BIT(2) 20 #define QSFP_HFI0_INT_N BIT(3) 21 #define QSFP_HFI0_MODPRST_N BIT(4) 22 23 /* QSFP is paged at 256 bytes */ 24 #define QSFP_PAGESIZE 256 25 /* Reads/writes cannot cross 128 byte boundaries */ 26 #define QSFP_RW_BOUNDARY 128 27 28 /* number of bytes in i2c offset for QSFP devices */ 29 #define __QSFP_OFFSET_SIZE 1 /* num address bytes */ 30 #define QSFP_OFFSET_SIZE (__QSFP_OFFSET_SIZE << 8) /* shifted value */ 31 32 /* Defined fields that Intel requires of qualified cables */ 33 /* Byte 0 is Identifier, not checked */ 34 /* Byte 1 is reserved "status MSB" */ 35 #define QSFP_MONITOR_VAL_START 22 36 #define QSFP_MONITOR_VAL_END 81 37 #define QSFP_MONITOR_RANGE (QSFP_MONITOR_VAL_END - QSFP_MONITOR_VAL_START + 1) 38 #define QSFP_TX_CTRL_BYTE_OFFS 86 39 #define QSFP_PWR_CTRL_BYTE_OFFS 93 40 #define QSFP_CDR_CTRL_BYTE_OFFS 98 41 42 #define QSFP_PAGE_SELECT_BYTE_OFFS 127 43 /* Byte 128 is Identifier: must be 0x0c for QSFP, or 0x0d for QSFP+ */ 44 #define QSFP_MOD_ID_OFFS 128 45 /* 46 * Byte 129 is "Extended Identifier". 47 * For bits [7:6]: 0:1.5W, 1:2.0W, 2:2.5W, 3:3.5W 48 * For bits [1:0]: 0:Unused, 1:4W, 2:4.5W, 3:5W 49 */ 50 #define QSFP_MOD_PWR_OFFS 129 51 /* Byte 130 is Connector type. Not Intel req'd */ 52 /* Bytes 131..138 are Transceiver types, bit maps for various tech, none IB */ 53 /* Byte 139 is encoding. code 0x01 is 8b10b. Not Intel req'd */ 54 /* byte 140 is nominal bit-rate, in units of 100Mbits/sec */ 55 #define QSFP_NOM_BIT_RATE_100_OFFS 140 56 /* Byte 141 is Extended Rate Select. Not Intel req'd */ 57 /* Bytes 142..145 are lengths for various fiber types. Not Intel req'd */ 58 /* Byte 146 is length for Copper. Units of 1 meter */ 59 #define QSFP_MOD_LEN_OFFS 146 60 /* 61 * Byte 147 is Device technology. D0..3 not Intel req'd 62 * D4..7 select from 15 choices, translated by table: 63 */ 64 #define QSFP_MOD_TECH_OFFS 147 65 extern const char *const hfi1_qsfp_devtech[16]; 66 /* Active Equalization includes fiber, copper full EQ, and copper near Eq */ 67 #define QSFP_IS_ACTIVE(tech) ((0xA2FF >> ((tech) >> 4)) & 1) 68 /* Active Equalization includes fiber, copper full EQ, and copper far Eq */ 69 #define QSFP_IS_ACTIVE_FAR(tech) ((0x32FF >> ((tech) >> 4)) & 1) 70 /* Attenuation should be valid for copper other than full/near Eq */ 71 #define QSFP_HAS_ATTEN(tech) ((0x4D00 >> ((tech) >> 4)) & 1) 72 /* Length is only valid if technology is "copper" */ 73 #define QSFP_IS_CU(tech) ((0xED00 >> ((tech) >> 4)) & 1) 74 #define QSFP_TECH_1490 9 75 76 #define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \ 77 oui[2]) 78 #define QSFP_OUI_AMPHENOL 0x415048 79 #define QSFP_OUI_FINISAR 0x009065 80 #define QSFP_OUI_GORE 0x002177 81 82 /* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */ 83 #define QSFP_VEND_OFFS 148 84 #define QSFP_VEND_LEN 16 85 /* Byte 164 is IB Extended transceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */ 86 #define QSFP_IBXCV_OFFS 164 87 /* Bytes 165..167 are Vendor OUI number */ 88 #define QSFP_VOUI_OFFS 165 89 #define QSFP_VOUI_LEN 3 90 /* Bytes 168..183 are Vendor Part Number, string */ 91 #define QSFP_PN_OFFS 168 92 #define QSFP_PN_LEN 16 93 /* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */ 94 #define QSFP_REV_OFFS 184 95 #define QSFP_REV_LEN 2 96 /* 97 * Bytes 186,187 are Wavelength, if Optical. Not Intel req'd 98 * If copper, they are attenuation in dB: 99 * Byte 186 is at 2.5Gb/sec (SDR), Byte 187 at 5.0Gb/sec (DDR) 100 */ 101 #define QSFP_ATTEN_OFFS 186 102 #define QSFP_ATTEN_LEN 2 103 /* 104 * Bytes 188,189 are Wavelength tolerance, if optical 105 * If copper, they are attenuation in dB: 106 * Byte 188 is at 12.5 Gb/s, Byte 189 at 25 Gb/s 107 */ 108 #define QSFP_CU_ATTEN_7G_OFFS 188 109 #define QSFP_CU_ATTEN_12G_OFFS 189 110 /* Byte 190 is Max Case Temp. Not Intel req'd */ 111 /* Byte 191 is LSB of sum of bytes 128..190. Not Intel req'd */ 112 #define QSFP_CC_OFFS 191 113 #define QSFP_EQ_INFO_OFFS 193 114 #define QSFP_CDR_INFO_OFFS 194 115 /* Bytes 196..211 are Serial Number, String */ 116 #define QSFP_SN_OFFS 196 117 #define QSFP_SN_LEN 16 118 /* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */ 119 #define QSFP_DATE_OFFS 212 120 #define QSFP_DATE_LEN 6 121 /* Bytes 218,219 are optional lot-code, string */ 122 #define QSFP_LOT_OFFS 218 123 #define QSFP_LOT_LEN 2 124 /* Bytes 220, 221 indicate monitoring options, Not Intel req'd */ 125 /* Byte 222 indicates nominal bitrate in units of 250Mbits/sec */ 126 #define QSFP_NOM_BIT_RATE_250_OFFS 222 127 /* Byte 223 is LSB of sum of bytes 192..222 */ 128 #define QSFP_CC_EXT_OFFS 223 129 130 /* 131 * Interrupt flag masks 132 */ 133 #define QSFP_DATA_NOT_READY 0x01 134 135 #define QSFP_HIGH_TEMP_ALARM 0x80 136 #define QSFP_LOW_TEMP_ALARM 0x40 137 #define QSFP_HIGH_TEMP_WARNING 0x20 138 #define QSFP_LOW_TEMP_WARNING 0x10 139 140 #define QSFP_HIGH_VCC_ALARM 0x80 141 #define QSFP_LOW_VCC_ALARM 0x40 142 #define QSFP_HIGH_VCC_WARNING 0x20 143 #define QSFP_LOW_VCC_WARNING 0x10 144 145 #define QSFP_HIGH_POWER_ALARM 0x88 146 #define QSFP_LOW_POWER_ALARM 0x44 147 #define QSFP_HIGH_POWER_WARNING 0x22 148 #define QSFP_LOW_POWER_WARNING 0x11 149 150 #define QSFP_HIGH_BIAS_ALARM 0x88 151 #define QSFP_LOW_BIAS_ALARM 0x44 152 #define QSFP_HIGH_BIAS_WARNING 0x22 153 #define QSFP_LOW_BIAS_WARNING 0x11 154 155 #define QSFP_ATTEN_SDR(attenarray) (attenarray[0]) 156 #define QSFP_ATTEN_DDR(attenarray) (attenarray[1]) 157 158 /* 159 * struct qsfp_data encapsulates state of QSFP device for one port. 160 * it will be part of port-specific data if a board supports QSFP. 161 * 162 * Since multiple board-types use QSFP, and their pport_data structs 163 * differ (in the chip-specific section), we need a pointer to its head. 164 * 165 * Avoiding premature optimization, we will have one work_struct per port, 166 * and let the qsfp_lock arbitrate access to common resources. 167 * 168 */ 169 struct qsfp_data { 170 /* Helps to find our way */ 171 struct hfi1_pportdata *ppd; 172 struct work_struct qsfp_work; 173 u8 cache[QSFP_MAX_NUM_PAGES * 128]; 174 /* protect qsfp data */ 175 spinlock_t qsfp_lock; 176 u8 check_interrupt_flags; 177 u8 reset_needed; 178 u8 limiting_active; 179 u8 cache_valid; 180 u8 cache_refresh_required; 181 }; 182 183 int refresh_qsfp_cache(struct hfi1_pportdata *ppd, 184 struct qsfp_data *cp); 185 int get_qsfp_power_class(u8 power_byte); 186 int qsfp_mod_present(struct hfi1_pportdata *ppd); 187 int get_cable_info(struct hfi1_devdata *dd, u32 port_num, u32 addr, 188 u32 len, u8 *data); 189 190 int i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, 191 int offset, void *bp, int len); 192 int i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr, 193 int offset, void *bp, int len); 194 int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp, 195 int len); 196 int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp, 197 int len); 198 int one_qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp, 199 int len); 200 int one_qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp, 201 int len); 202 struct hfi1_asic_data; 203 int set_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad); 204 void clean_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad); 205