205 lines · c
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 0xA08#define QSFP_PWR_LAG_MSEC 20009#define QSFP_MODPRS_LAG_MSEC 2010/* 128 byte pages, per SFF 8636 rev 2.4 */11#define QSFP_MAX_NUM_PAGES 512 13/*14 * Below are masks for QSFP pins. Pins are the same for HFI0 and HFI1.15 * _N means asserted low16 */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 25625/* Reads/writes cannot cross 128 byte boundaries */26#define QSFP_RW_BOUNDARY 12827 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 2236#define QSFP_MONITOR_VAL_END 8137#define QSFP_MONITOR_RANGE (QSFP_MONITOR_VAL_END - QSFP_MONITOR_VAL_START + 1)38#define QSFP_TX_CTRL_BYTE_OFFS 8639#define QSFP_PWR_CTRL_BYTE_OFFS 9340#define QSFP_CDR_CTRL_BYTE_OFFS 9841 42#define QSFP_PAGE_SELECT_BYTE_OFFS 12743/* Byte 128 is Identifier: must be 0x0c for QSFP, or 0x0d for QSFP+ */44#define QSFP_MOD_ID_OFFS 12845/*46 * Byte 129 is "Extended Identifier".47 * For bits [7:6]: 0:1.5W, 1:2.0W, 2:2.5W, 3:3.5W48 * For bits [1:0]: 0:Unused, 1:4W, 2:4.5W, 3:5W49 */50#define QSFP_MOD_PWR_OFFS 12951/* 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 14056/* 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 14660/*61 * Byte 147 is Device technology. D0..3 not Intel req'd62 * D4..7 select from 15 choices, translated by table:63 */64#define QSFP_MOD_TECH_OFFS 14765extern 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 975 76#define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \77 oui[2])78#define QSFP_OUI_AMPHENOL 0x41504879#define QSFP_OUI_FINISAR 0x00906580#define QSFP_OUI_GORE 0x00217781 82/* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */83#define QSFP_VEND_OFFS 14884#define QSFP_VEND_LEN 1685/* Byte 164 is IB Extended transceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */86#define QSFP_IBXCV_OFFS 16487/* Bytes 165..167 are Vendor OUI number */88#define QSFP_VOUI_OFFS 16589#define QSFP_VOUI_LEN 390/* Bytes 168..183 are Vendor Part Number, string */91#define QSFP_PN_OFFS 16892#define QSFP_PN_LEN 1693/* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */94#define QSFP_REV_OFFS 18495#define QSFP_REV_LEN 296/*97 * Bytes 186,187 are Wavelength, if Optical. Not Intel req'd98 * 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 186102#define QSFP_ATTEN_LEN 2103/*104 * Bytes 188,189 are Wavelength tolerance, if optical105 * If copper, they are attenuation in dB:106 * Byte 188 is at 12.5 Gb/s, Byte 189 at 25 Gb/s107 */108#define QSFP_CU_ATTEN_7G_OFFS 188109#define QSFP_CU_ATTEN_12G_OFFS 189110/* 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 191113#define QSFP_EQ_INFO_OFFS 193114#define QSFP_CDR_INFO_OFFS 194115/* Bytes 196..211 are Serial Number, String */116#define QSFP_SN_OFFS 196117#define QSFP_SN_LEN 16118/* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */119#define QSFP_DATE_OFFS 212120#define QSFP_DATE_LEN 6121/* Bytes 218,219 are optional lot-code, string */122#define QSFP_LOT_OFFS 218123#define QSFP_LOT_LEN 2124/* 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 222127/* Byte 223 is LSB of sum of bytes 192..222 */128#define QSFP_CC_EXT_OFFS 223129 130/*131 * Interrupt flag masks132 */133#define QSFP_DATA_NOT_READY 0x01134 135#define QSFP_HIGH_TEMP_ALARM 0x80136#define QSFP_LOW_TEMP_ALARM 0x40137#define QSFP_HIGH_TEMP_WARNING 0x20138#define QSFP_LOW_TEMP_WARNING 0x10139 140#define QSFP_HIGH_VCC_ALARM 0x80141#define QSFP_LOW_VCC_ALARM 0x40142#define QSFP_HIGH_VCC_WARNING 0x20143#define QSFP_LOW_VCC_WARNING 0x10144 145#define QSFP_HIGH_POWER_ALARM 0x88146#define QSFP_LOW_POWER_ALARM 0x44147#define QSFP_HIGH_POWER_WARNING 0x22148#define QSFP_LOW_POWER_WARNING 0x11149 150#define QSFP_HIGH_BIAS_ALARM 0x88151#define QSFP_LOW_BIAS_ALARM 0x44152#define QSFP_HIGH_BIAS_WARNING 0x22153#define QSFP_LOW_BIAS_WARNING 0x11154 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 structs163 * 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 */169struct 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 183int refresh_qsfp_cache(struct hfi1_pportdata *ppd,184 struct qsfp_data *cp);185int get_qsfp_power_class(u8 power_byte);186int qsfp_mod_present(struct hfi1_pportdata *ppd);187int get_cable_info(struct hfi1_devdata *dd, u32 port_num, u32 addr,188 u32 len, u8 *data);189 190int i2c_write(struct hfi1_pportdata *ppd, u32 target, int i2c_addr,191 int offset, void *bp, int len);192int i2c_read(struct hfi1_pportdata *ppd, u32 target, int i2c_addr,193 int offset, void *bp, int len);194int qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,195 int len);196int qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,197 int len);198int one_qsfp_write(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,199 int len);200int one_qsfp_read(struct hfi1_pportdata *ppd, u32 target, int addr, void *bp,201 int len);202struct hfi1_asic_data;203int set_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad);204void clean_up_i2c(struct hfi1_devdata *dd, struct hfi1_asic_data *ad);205