PageRenderTime 25ms CodeModel.GetById 21ms app.highlight 2ms RepoModel.GetById 1ms app.codeStats 0ms

/drivers/infiniband/hw/qib/qib_qsfp.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 186 lines | 74 code | 10 blank | 102 comment | 0 complexity | 8ce9af3f3ea4935a601f1db2ee5d3993 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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
 79extern 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/* Active Equalization includes fiber, copper full EQ, and copper far Eq */
 83#define QSFP_IS_ACTIVE_FAR(tech) ((0x32FF >> ((tech) >> 4)) & 1)
 84/* Attenuation should be valid for copper other than full/near Eq */
 85#define QSFP_HAS_ATTEN(tech) ((0x4D00 >> ((tech) >> 4)) & 1)
 86/* Length is only valid if technology is "copper" */
 87#define QSFP_IS_CU(tech) ((0xED00 >> ((tech) >> 4)) & 1)
 88#define QSFP_TECH_1490 9
 89
 90#define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \
 91			oui[2])
 92#define QSFP_OUI_AMPHENOL 0x415048
 93#define QSFP_OUI_FINISAR  0x009065
 94#define QSFP_OUI_GORE     0x002177
 95
 96/* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */
 97#define QSFP_VEND_OFFS 148
 98#define QSFP_VEND_LEN 16
 99/* Byte 164 is IB Extended tranceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */
100#define QSFP_IBXCV_OFFS 164
101/* Bytes 165..167 are Vendor OUI number */
102#define QSFP_VOUI_OFFS 165
103#define QSFP_VOUI_LEN 3
104/* Bytes 168..183 are Vendor Part Number, string */
105#define QSFP_PN_OFFS 168
106#define QSFP_PN_LEN 16
107/* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */
108#define QSFP_REV_OFFS 184
109#define QSFP_REV_LEN 2
110/*
111 * Bytes 186,187 are Wavelength, if Optical. Not Qlogic req'd
112 *  If copper, they are attenuation in dB:
113 * Byte 186 is at 2.5Gb/sec (SDR), Byte 187 at 5.0Gb/sec (DDR)
114 */
115#define QSFP_ATTEN_OFFS 186
116#define QSFP_ATTEN_LEN 2
117/* Bytes 188,189 are Wavelength tolerance, not QLogic req'd */
118/* Byte 190 is Max Case Temp. Not QLogic req'd */
119/* Byte 191 is LSB of sum of bytes 128..190. Not QLogic req'd */
120#define QSFP_CC_OFFS 191
121/* Bytes 192..195 are Options implemented in qsfp. Not Qlogic req'd */
122/* Bytes 196..211 are Serial Number, String */
123#define QSFP_SN_OFFS 196
124#define QSFP_SN_LEN 16
125/* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */
126#define QSFP_DATE_OFFS 212
127#define QSFP_DATE_LEN 6
128/* Bytes 218,219 are optional lot-code, string */
129#define QSFP_LOT_OFFS 218
130#define QSFP_LOT_LEN 2
131/* Bytes 220, 221 indicate monitoring options, Not QLogic req'd */
132/* Byte 223 is LSB of sum of bytes 192..222 */
133#define QSFP_CC_EXT_OFFS 223
134
135/*
136 * struct qib_qsfp_data encapsulates state of QSFP device for one port.
137 * it will be part of port-chip-specific data if a board supports QSFP.
138 *
139 * Since multiple board-types use QSFP, and their pport_data structs
140 * differ (in the chip-specific section), we need a pointer to its head.
141 *
142 * Avoiding premature optimization, we will have one work_struct per port,
143 * and let the (increasingly inaccurately named) eep_lock arbitrate
144 * access to common resources.
145 *
146 */
147
148/*
149 * Hold the parts of the onboard EEPROM that we care about, so we aren't
150 * coonstantly bit-boffing
151 */
152struct qib_qsfp_cache {
153	u8 id;	/* must be 0x0C or 0x0D; 0 indicates invalid EEPROM read */
154	u8 pwr; /* in D6,7 */
155	u8 len;	/* in meters, Cu only */
156	u8 tech;
157	char vendor[QSFP_VEND_LEN];
158	u8 xt_xcv; /* Ext. tranceiver codes, 4 lsbs are IB speed supported */
159	u8 oui[QSFP_VOUI_LEN];
160	u8 partnum[QSFP_PN_LEN];
161	u8 rev[QSFP_REV_LEN];
162	u8 atten[QSFP_ATTEN_LEN];
163	u8 cks1;	/* Checksum of bytes 128..190 */
164	u8 serial[QSFP_SN_LEN];
165	u8 date[QSFP_DATE_LEN];
166	u8 lot[QSFP_LOT_LEN];
167	u8 cks2;	/* Checsum of bytes 192..222 */
168};
169
170#define QSFP_PWR(pbyte) (((pbyte) >> 6) & 3)
171#define QSFP_ATTEN_SDR(attenarray) (attenarray[0])
172#define QSFP_ATTEN_DDR(attenarray) (attenarray[1])
173
174struct qib_qsfp_data {
175	/* Helps to find our way */
176	struct qib_pportdata *ppd;
177	struct work_struct work;
178	struct qib_qsfp_cache cache;
179	u64 t_insert;
180};
181
182extern int qib_refresh_qsfp_cache(struct qib_pportdata *ppd,
183				  struct qib_qsfp_cache *cp);
184extern void qib_qsfp_init(struct qib_qsfp_data *qd,
185			  void (*fevent)(struct work_struct *));
186extern void qib_qsfp_deinit(struct qib_qsfp_data *qd);