1 /* 2 * Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved. 3 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 /* QSFP support common definitions, for ib_qib driver */ 34 35 #define QSFP_DEV 0xA0 36 #define QSFP_PWR_LAG_MSEC 2000 37 38 /* 39 * Below are masks for various QSFP signals, for Port 1. 40 * Port2 equivalents are shifted by QSFP_GPIO_PORT2_SHIFT. 41 * _N means asserted low 42 */ 43 #define QSFP_GPIO_MOD_SEL_N (4) 44 #define QSFP_GPIO_MOD_PRS_N (8) 45 #define QSFP_GPIO_INT_N (0x10) 46 #define QSFP_GPIO_MOD_RST_N (0x20) 47 #define QSFP_GPIO_LP_MODE (0x40) 48 #define QSFP_GPIO_PORT2_SHIFT 5 49 50 #define QSFP_PAGESIZE 128 51 /* Defined fields that QLogic requires of qualified cables */ 52 /* Byte 0 is Identifier, not checked */ 53 /* Byte 1 is reserved "status MSB" */ 54 /* Byte 2 is "status LSB" We only care that D2 "Flat Mem" is set. */ 55 /* 56 * Rest of first 128 not used, although 127 is reserved for page select 57 * if module is not "Flat memory". 58 */ 59 /* Byte 128 is Identifier: must be 0x0c for QSFP, or 0x0d for QSFP+ */ 60 #define QSFP_MOD_ID_OFFS 128 61 /* 62 * Byte 129 is "Extended Identifier". We only care about D7,D6: Power class 63 * 0:1.5W, 1:2.0W, 2:2.5W, 3:3.5W 64 */ 65 #define QSFP_MOD_PWR_OFFS 129 66 /* Byte 130 is Connector type. Not QLogic req'd */ 67 /* Bytes 131..138 are Transceiver types, bit maps for various tech, none IB */ 68 /* Byte 139 is encoding. code 0x01 is 8b10b. Not QLogic req'd */ 69 /* byte 140 is nominal bit-rate, in units of 100Mbits/sec Not QLogic req'd */ 70 /* Byte 141 is Extended Rate Select. Not QLogic req'd */ 71 /* Bytes 142..145 are lengths for various fiber types. Not QLogic req'd */ 72 /* Byte 146 is length for Copper. Units of 1 meter */ 73 #define QSFP_MOD_LEN_OFFS 146 74 /* 75 * Byte 147 is Device technology. D0..3 not Qlogc req'd 76 * D4..7 select from 15 choices, translated by table: 77 */ 78 #define QSFP_MOD_TECH_OFFS 147 79 extern const char *const qib_qsfp_devtech[16]; 80 /* Active Equalization includes fiber, copper full EQ, and copper near Eq */ 81 #define QSFP_IS_ACTIVE(tech) ((0xA2FF >> ((tech) >> 4)) & 1) 82 /* Attenuation should be valid for copper other than full/near Eq */ 83 #define QSFP_HAS_ATTEN(tech) ((0x4D00 >> ((tech) >> 4)) & 1) 84 /* Length is only valid if technology is "copper" */ 85 #define QSFP_IS_CU(tech) ((0xED00 >> ((tech) >> 4)) & 1) 86 #define QSFP_TECH_1490 9 87 88 #define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \ 89 oui[2]) 90 #define QSFP_OUI_AMPHENOL 0x415048 91 #define QSFP_OUI_FINISAR 0x009065 92 #define QSFP_OUI_GORE 0x002177 93 94 /* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */ 95 #define QSFP_VEND_OFFS 148 96 #define QSFP_VEND_LEN 16 97 /* Byte 164 is IB Extended tranceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */ 98 #define QSFP_IBXCV_OFFS 164 99 /* Bytes 165..167 are Vendor OUI number */ 100 #define QSFP_VOUI_OFFS 165 101 #define QSFP_VOUI_LEN 3 102 /* Bytes 168..183 are Vendor Part Number, string */ 103 #define QSFP_PN_OFFS 168 104 #define QSFP_PN_LEN 16 105 /* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */ 106 #define QSFP_REV_OFFS 184 107 #define QSFP_REV_LEN 2 108 /* 109 * Bytes 186,187 are Wavelength, if Optical. Not Qlogic req'd 110 * If copper, they are attenuation in dB: 111 * Byte 186 is at 2.5Gb/sec (SDR), Byte 187 at 5.0Gb/sec (DDR) 112 */ 113 #define QSFP_ATTEN_OFFS 186 114 #define QSFP_ATTEN_LEN 2 115 /* Bytes 188,189 are Wavelength tolerance, not QLogic req'd */ 116 /* Byte 190 is Max Case Temp. Not QLogic req'd */ 117 /* Byte 191 is LSB of sum of bytes 128..190. Not QLogic req'd */ 118 #define QSFP_CC_OFFS 191 119 /* Bytes 192..195 are Options implemented in qsfp. Not Qlogic req'd */ 120 /* Bytes 196..211 are Serial Number, String */ 121 #define QSFP_SN_OFFS 196 122 #define QSFP_SN_LEN 16 123 /* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */ 124 #define QSFP_DATE_OFFS 212 125 #define QSFP_DATE_LEN 6 126 /* Bytes 218,219 are optional lot-code, string */ 127 #define QSFP_LOT_OFFS 218 128 #define QSFP_LOT_LEN 2 129 /* Bytes 220, 221 indicate monitoring options, Not QLogic req'd */ 130 /* Byte 223 is LSB of sum of bytes 192..222 */ 131 #define QSFP_CC_EXT_OFFS 223 132 133 /* 134 * struct qib_qsfp_data encapsulates state of QSFP device for one port. 135 * it will be part of port-chip-specific data if a board supports QSFP. 136 * 137 * Since multiple board-types use QSFP, and their pport_data structs 138 * differ (in the chip-specific section), we need a pointer to its head. 139 * 140 * Avoiding premature optimization, we will have one work_struct per port, 141 * and let the (increasingly inaccurately named) eep_lock arbitrate 142 * access to common resources. 143 * 144 */ 145 146 /* 147 * Hold the parts of the onboard EEPROM that we care about, so we aren't 148 * coonstantly bit-boffing 149 */ 150 struct qib_qsfp_cache { 151 u8 id; /* must be 0x0C or 0x0D; 0 indicates invalid EEPROM read */ 152 u8 pwr; /* in D6,7 */ 153 u8 len; /* in meters, Cu only */ 154 u8 tech; 155 char vendor[QSFP_VEND_LEN]; 156 u8 xt_xcv; /* Ext. tranceiver codes, 4 lsbs are IB speed supported */ 157 u8 oui[QSFP_VOUI_LEN]; 158 u8 partnum[QSFP_PN_LEN]; 159 u8 rev[QSFP_REV_LEN]; 160 u8 atten[QSFP_ATTEN_LEN]; 161 u8 cks1; /* Checksum of bytes 128..190 */ 162 u8 serial[QSFP_SN_LEN]; 163 u8 date[QSFP_DATE_LEN]; 164 u8 lot[QSFP_LOT_LEN]; 165 u8 cks2; /* Checsum of bytes 192..222 */ 166 }; 167 168 #define QSFP_PWR(pbyte) (((pbyte) >> 6) & 3) 169 #define QSFP_ATTEN_SDR(attenarray) (attenarray[0]) 170 #define QSFP_ATTEN_DDR(attenarray) (attenarray[1]) 171 172 struct qib_qsfp_data { 173 /* Helps to find our way */ 174 struct qib_pportdata *ppd; 175 struct work_struct work; 176 struct qib_qsfp_cache cache; 177 u64 t_insert; 178 }; 179 180 extern int qib_refresh_qsfp_cache(struct qib_pportdata *ppd, 181 struct qib_qsfp_cache *cp); 182 extern void qib_qsfp_init(struct qib_qsfp_data *qd, 183 void (*fevent)(struct work_struct *)); 184 extern void qib_qsfp_deinit(struct qib_qsfp_data *qd); 185